diff options
Diffstat (limited to 'target')
18 files changed, 0 insertions, 7685 deletions
diff --git a/target/linux/etrax/config-2.6.25 b/target/linux/etrax/config-2.6.25 deleted file mode 100644 index 5a71d7d..0000000 --- a/target/linux/etrax/config-2.6.25 +++ /dev/null @@ -1,176 +0,0 @@ -# CONFIG_ARCH_HAS_ILOG2_U32 is not set -# CONFIG_ARCH_HAS_ILOG2_U64 is not set -CONFIG_BASE_SMALL=0 -CONFIG_BITREVERSE=y -CONFIG_BLK_DEV_SD=y -CONFIG_BOUNCE=y -# CONFIG_BRIDGE is not set -CONFIG_CLASSIC_RCU=y -CONFIG_CRIS=y -# CONFIG_CRIS_MACH_ARTPEC3 is not set -# CONFIG_ETRAX100LX is not set -CONFIG_ETRAX100LX_V2=y -# CONFIG_ETRAXFS is not set -CONFIG_ETRAX_ARCH_V10=y -# CONFIG_ETRAX_ARCH_V32 is not set -CONFIG_ETRAX_AXISFLASHMAP=y -CONFIG_ETRAX_CMDLINE="root=/dev/mtdblock1 rootfstype=squashfs,jffs2 noinitrd console=ttyS0,115200" -# CONFIG_ETRAX_CSP0_LEDS is not set -# CONFIG_ETRAX_DEBUG_PORT0 is not set -# CONFIG_ETRAX_DEBUG_PORT1 is not set -# CONFIG_ETRAX_DEBUG_PORT2 is not set -# CONFIG_ETRAX_DEBUG_PORT3 is not set -CONFIG_ETRAX_DEBUG_PORT_NULL=y -CONFIG_ETRAX_DEF_R_BUS_CONFIG=0x4 -CONFIG_ETRAX_DEF_R_PORT_PA_DATA=0xf0 -CONFIG_ETRAX_DEF_R_PORT_PA_DIR=0x1c -CONFIG_ETRAX_DEF_R_PORT_PB_CONFIG=0x00 -CONFIG_ETRAX_DEF_R_PORT_PB_DATA=0x03 -CONFIG_ETRAX_DEF_R_PORT_PB_DIR=0xce -CONFIG_ETRAX_DEF_R_SDRAM_CONFIG=0x09603737 -CONFIG_ETRAX_DEF_R_SDRAM_TIMING=0x80008002 -CONFIG_ETRAX_DEF_R_WAITSTATES=0x95f8 -CONFIG_ETRAX_DRAM_SIZE=32 -CONFIG_ETRAX_DRAM_VIRTUAL_BASE=c0000000 -CONFIG_ETRAX_ETHERNET=y -CONFIG_ETRAX_FAST_TIMER=y -CONFIG_ETRAX_FLASH1_SIZE=0 -CONFIG_ETRAX_FLASH_BUSWIDTH=2 -CONFIG_ETRAX_GPIO=y -# CONFIG_ETRAX_I2C is not set -# CONFIG_ETRAX_I2C_GVC is not set -# CONFIG_ETRAX_KMALLOCED_MODULES is not set -CONFIG_ETRAX_LED1G=2 -CONFIG_ETRAX_LED1R=2 -CONFIG_ETRAX_LED2G=3 -CONFIG_ETRAX_LED2R=3 -CONFIG_ETRAX_LED3G=2 -CONFIG_ETRAX_LED3R=2 -CONFIG_ETRAX_NANDFLASH_BUSWIDTH=1 -CONFIG_ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY=y -# CONFIG_ETRAX_NETWORK_LED_ON_WHEN_LINK is not set -# CONFIG_ETRAX_NO_LEDS is not set -CONFIG_ETRAX_PA_BUTTON_BITMASK=02 -CONFIG_ETRAX_PA_CHANGEABLE_BITS=0xFF -CONFIG_ETRAX_PA_CHANGEABLE_DIR=0xFF -CONFIG_ETRAX_PA_LEDS=y -CONFIG_ETRAX_PB_CHANGEABLE_BITS=0xFF -CONFIG_ETRAX_PB_CHANGEABLE_DIR=0xFF -# CONFIG_ETRAX_PB_LEDS is not set -CONFIG_ETRAX_PTABLE_SECTOR=0 -CONFIG_ETRAX_RESCUE_SER0=y -# CONFIG_ETRAX_RESCUE_SER1 is not set -# CONFIG_ETRAX_RESCUE_SER2 is not set -# CONFIG_ETRAX_RESCUE_SER3 is not set -# CONFIG_ETRAX_RS485 is not set -CONFIG_ETRAX_SDRAM=y -CONFIG_ETRAX_SER0_CD_ON_PA_BIT=-1 -CONFIG_ETRAX_SER0_CD_ON_PB_BIT=-1 -CONFIG_ETRAX_SER0_DSR_ON_PA_BIT=-1 -CONFIG_ETRAX_SER0_DSR_ON_PB_BIT=-1 -CONFIG_ETRAX_SER0_DTR_ON_PA_BIT=-1 -CONFIG_ETRAX_SER0_DTR_ON_PB_BIT=-1 -# CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED is not set -CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_ON_NONE=y -# CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_ON_PA is not set -# CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_ON_PB is not set -CONFIG_ETRAX_SER0_RI_ON_PA_BIT=-1 -CONFIG_ETRAX_SER0_RI_ON_PB_BIT=-1 -CONFIG_ETRAX_SER2_CD_ON_PA_BIT=-1 -CONFIG_ETRAX_SER2_CD_ON_PB_BIT=-1 -CONFIG_ETRAX_SER2_DSR_ON_PA_BIT=-1 -CONFIG_ETRAX_SER2_DSR_ON_PB_BIT=-1 -CONFIG_ETRAX_SER2_DTR_ON_PA_BIT=-1 -CONFIG_ETRAX_SER2_DTR_ON_PB_BIT=-1 -# CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED is not set -CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_ON_NONE=y -# CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_ON_PA is not set -# CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_ON_PB is not set -CONFIG_ETRAX_SER2_RI_ON_PA_BIT=-1 -CONFIG_ETRAX_SER2_RI_ON_PB_BIT=-1 -CONFIG_ETRAX_SER3_CD_ON_PA_BIT=-1 -CONFIG_ETRAX_SER3_CD_ON_PB_BIT=-1 -CONFIG_ETRAX_SER3_DSR_ON_PA_BIT=-1 -CONFIG_ETRAX_SER3_DSR_ON_PB_BIT=-1 -CONFIG_ETRAX_SER3_DTR_ON_PA_BIT=-1 -CONFIG_ETRAX_SER3_DTR_ON_PB_BIT=-1 -# CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED is not set -CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_ON_NONE=y -# CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_ON_PA is not set -# CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_ON_PB is not set -CONFIG_ETRAX_SER3_RI_ON_PA_BIT=-1 -CONFIG_ETRAX_SER3_RI_ON_PB_BIT=-1 -CONFIG_ETRAX_SERIAL=y -# CONFIG_ETRAX_SERIAL_FAST_TIMER is not set -# CONFIG_ETRAX_SERIAL_FLUSH_DMA_FAST is not set -CONFIG_ETRAX_SERIAL_PORT0=y -# CONFIG_ETRAX_SERIAL_PORT0_DMA0_OUT is not set -# CONFIG_ETRAX_SERIAL_PORT0_DMA1_IN is not set -# CONFIG_ETRAX_SERIAL_PORT0_DMA6_OUT is not set -# CONFIG_ETRAX_SERIAL_PORT0_DMA7_IN is not set -CONFIG_ETRAX_SERIAL_PORT0_NO_DMA_IN=y -CONFIG_ETRAX_SERIAL_PORT0_NO_DMA_OUT=y -# CONFIG_ETRAX_SERIAL_PORT1 is not set -CONFIG_ETRAX_SERIAL_PORT2=y -CONFIG_ETRAX_SERIAL_PORT2_DMA2_OUT=y -CONFIG_ETRAX_SERIAL_PORT2_DMA3_IN=y -# CONFIG_ETRAX_SERIAL_PORT2_DMA6_OUT is not set -# CONFIG_ETRAX_SERIAL_PORT2_DMA7_IN is not set -# CONFIG_ETRAX_SERIAL_PORT2_NO_DMA_IN is not set -# CONFIG_ETRAX_SERIAL_PORT2_NO_DMA_OUT is not set -CONFIG_ETRAX_SERIAL_PORT3=y -# CONFIG_ETRAX_SERIAL_PORT3_DMA2_OUT is not set -# CONFIG_ETRAX_SERIAL_PORT3_DMA3_IN is not set -CONFIG_ETRAX_SERIAL_PORT3_DMA4_OUT=y -CONFIG_ETRAX_SERIAL_PORT3_DMA5_IN=y -# CONFIG_ETRAX_SERIAL_PORT3_DMA8_OUT is not set -# CONFIG_ETRAX_SERIAL_PORT3_DMA9_IN is not set -# CONFIG_ETRAX_SERIAL_PORT3_NO_DMA_IN is not set -# CONFIG_ETRAX_SERIAL_PORT3_NO_DMA_OUT is not set -CONFIG_ETRAX_SERIAL_RX_TIMEOUT_TICKS=1 -# CONFIG_ETRAX_SOFT_SHUTDOWN is not set -# CONFIG_ETRAX_SYNCHRONOUS_SERIAL is not set -CONFIG_ETRAX_USB_HOST=y -CONFIG_ETRAX_USB_HOST_PORT1=y -CONFIG_ETRAX_USB_HOST_PORT2=y -# CONFIG_ETRAX_VCS_SIM is not set -# CONFIG_ETRAX_WATCHDOG is not set -CONFIG_EXT2_FS=y -CONFIG_FORCE_MAX_ZONEORDER=6 -CONFIG_GENERIC_FIND_NEXT_BIT=y -CONFIG_GENERIC_IOMAP=y -# CONFIG_GEN_RTC is not set -# CONFIG_HAMRADIO is not set -CONFIG_HAS_DMA=y -CONFIG_HAS_IOMEM=y -CONFIG_HAVE_IDE=y -# CONFIG_HAVE_KPROBES is not set -# CONFIG_HAVE_KRETPROBES is not set -# CONFIG_HAVE_OPROFILE is not set -# CONFIG_HW_RANDOM is not set -# CONFIG_I2C is not set -# CONFIG_IDE is not set -CONFIG_INITRAMFS_SOURCE="" -CONFIG_MTDRAM_ABS_POS=0x0 -CONFIG_MTDRAM_ERASE_SIZE=128 -CONFIG_MTDRAM_TOTAL_SIZE=0 -# CONFIG_MTD_CFI_INTELEXT is not set -CONFIG_MTD_CONCAT=y -CONFIG_MTD_MTDRAM=y -# CONFIG_NETDEV_1000 is not set -CONFIG_NO_IOPORT=y -# CONFIG_OOM_REBOOT is not set -# CONFIG_RTC is not set -CONFIG_SCSI=y -# CONFIG_SCSI_LOWLEVEL_PCMCIA is not set -# CONFIG_SERIAL_8250 is not set -CONFIG_SLABINFO=y -# CONFIG_SVINTO_SIM is not set -# CONFIG_SYSTEM_PROFILER is not set -CONFIG_UID16=y -CONFIG_USB=y -# CONFIG_USB_ARCH_HAS_EHCI is not set -# CONFIG_USB_ARCH_HAS_HCD is not set -# CONFIG_USB_ARCH_HAS_OHCI is not set -# CONFIG_VLAN_8021Q is not set -# CONFIG_WLAN_80211 is not set diff --git a/target/linux/etrax/files-2.6.25/arch/cris/arch-v10/drivers/etraxi2c.h b/target/linux/etrax/files-2.6.25/arch/cris/arch-v10/drivers/etraxi2c.h deleted file mode 100644 index 9d5c9bf..0000000 --- a/target/linux/etrax/files-2.6.25/arch/cris/arch-v10/drivers/etraxi2c.h +++ /dev/null @@ -1,49 +0,0 @@ -#ifndef _LINUX_ETRAXI2C_H -#define _LINUX_ETRAXI2C_H - -/* etraxi2c _IOC_TYPE, bits 8 to 15 in ioctl cmd */ - -#define ETRAXI2C_IOCTYPE 44 - -/* supported ioctl _IOC_NR's */ - -/* in write operations, the argument contains both i2c - * slave, register and value. - */ - -#define I2C_WRITEARG(slave, reg, value) (((slave) << 16) | ((reg) << 8) | (value)) -#define I2C_READARG(slave, reg) (((slave) << 16) | ((reg) << 8)) - -#define I2C_ARGSLAVE(arg) ((arg) >> 16) -#define I2C_ARGREG(arg) (((arg) >> 8) & 0xff) -#define I2C_ARGVALUE(arg) ((arg) & 0xff) - -#define I2C_WRITEREG 0x1 /* write to an I2C register */ -#define I2C_READREG 0x2 /* read from an I2C register */ - -/* -EXAMPLE usage: - - i2c_arg = I2C_WRITEARG(STA013_WRITE_ADDR, reg, val); - ioctl(fd, _IO(ETRAXI2C_IOCTYPE, I2C_WRITEREG), i2c_arg); - - i2c_arg = I2C_READARG(STA013_READ_ADDR, reg); - val = ioctl(fd, _IO(ETRAXI2C_IOCTYPE, I2C_READREG), i2c_arg); - -*/ - -/* Extended part */ -#define I2C_READ 0x4 /* reads from I2C device */ -#define I2C_WRITE 0x3 /* writes to I2C device */ -#define I2C_WRITEREAD 0x5 /* writes to I2C device where to start reading */ - -typedef struct _I2C_DATA -{ - unsigned char slave; /* I2C address (8-bit representation) of slave device */ - unsigned char wbuf[256]; /* Write buffer (length = 256 bytes) */ - unsigned int wlen; /* Number of bytes to write from wbuf[] */ - unsigned char rbuf[256]; /* Read buffer (length = 256 bytes) */ - unsigned int rlen; /* Number of bytes to read into rbuf[] */ -} I2C_DATA; - -#endif diff --git a/target/linux/etrax/files-2.6.25/arch/cris/arch-v10/drivers/i2c_errno.h b/target/linux/etrax/files-2.6.25/arch/cris/arch-v10/drivers/i2c_errno.h deleted file mode 100644 index ddd99b0..0000000 --- a/target/linux/etrax/files-2.6.25/arch/cris/arch-v10/drivers/i2c_errno.h +++ /dev/null @@ -1,20 +0,0 @@ -#ifndef _I2C_ERRNO_H -#define _I2C_ERRNO_H - -#define EI2CNOERRORS 0 /* All fine */ -#define EI2CBUSNFREE 1 /* I2C bus not free */ -#define EI2CWADDRESS 2 /* Address write failed */ -#define EI2CRADDRESS 3 /* Address read failed */ -#define EI2CSENDDATA 4 /* Sending data failed */ -#define EI2CRECVDATA 5 /* Receiving data failed */ -#define EI2CSTRTCOND 6 /* Start condition failed */ -#define EI2CRSTACOND 7 /* Repeated start condition failed */ -#define EI2CSTOPCOND 8 /* Stop condition failed */ -#define EI2CNOSNDBYT 9 /* Number of send bytes is 0, while there's a send buffer defined */ -#define EI2CNOSNDBUF 10 /* No send buffer defined, while number of send bytes is not 0 */ -#define EI2CNORCVBYT 11 /* Number of receive bytes is 0, while there's a receive buffer defined */ -#define EI2CNORCVBUF 12 /* No receive buffer defined, while number of receive bytes is not 0 */ -#define EI2CNOACKNLD 13 /* No acknowledge received from slave */ -#define EI2CNOMNUMBR 14 /* No MAJOR number received from kernel while registering the device */ - -#endif /* _I2C_ERRNO_H */ diff --git a/target/linux/etrax/files-2.6.25/arch/cris/arch-v10/drivers/i2c_gvc.c b/target/linux/etrax/files-2.6.25/arch/cris/arch-v10/drivers/i2c_gvc.c deleted file mode 100644 index 6429401..0000000 --- a/target/linux/etrax/files-2.6.25/arch/cris/arch-v10/drivers/i2c_gvc.c +++ /dev/null @@ -1,1315 +0,0 @@ -/*!*************************************************************************** -*! -*! FILE NAME : i2c.c -*! -*! -*! --------------------------------------------------------------------------- -*! -*! ( C ) Copyright 1999-2002 Axis Communications AB, LUND, SWEDEN -*! -*!***************************************************************************/ - -#define DYNAMIC_MAJOR_I2CDEV_NUMBER_ALLOC -//#undef DYNAMIC_MAJOR_I2CDEV_NUMBER_ALLOC - -/******************** INCLUDE FILES SECTION ****************************/ - -#include <linux/module.h> -#include <linux/fs.h> - -/**GVC**/ -#ifdef DYNAMIC_MAJOR_I2CDEV_NUMBER_ALLOC -#include <linux/types.h> /* for dev_t */ -#include <linux/cdev.h> /* for struct cdev */ -#endif -/**END GVC**/ - -#include "etraxi2c.h" - -/**GVC**/ -#include "i2c_errno.h" -/**END GVC**/ - -#include <asm/io.h> -#include <asm/delay.h> -#include <asm/arch/io_interface_mux.h> -#include <asm/uaccess.h> - -#include "i2c_gvc.h" - -MODULE_DESCRIPTION( "I2C Device Driver - 1.1" ); - -/*!********************************************************************* - *!History I2C driver Geert Vancompernolle - *!--------------------------------------- - *! - *! - v1.0: - *! First official version. - *! - *! - v1.1: - *! Changes to remove unwanted spikes at ACK/NACK time. - *! - *!*********************************************************************/ - -MODULE_LICENSE( "GPL" ); - -/****************** MACRO's **********************/ - -#define D( x ) - -/**GVC**/ -#ifndef DYNAMIC_MAJOR_I2CDEV_NUMBER_ALLOC -/**END GVC**/ -#define I2C_MAJOR 123 /* LOCAL/EXPERIMENTAL */ -/**GVC**/ -#endif -/**END GVC**/ - -/**GVC**/ -#define WAITONEUS 1 -/* Following are abbreviations taken from Philips I2C standard */ -/* Values are representing time in us and are rounded to next whole number, if relevant */ -#define THDSTA 4 /* Hold delay time for (repeated) START condition */ -#define TLOW 5 /* LOW period of the SCL clock */ -#define THDDAT 1 /* Hold delay time for DATA: value of 0 is allowed but 1 taken to be sure */ -#define TSUDAT 1 /* Set-up time for DATA */ -#define THIGH 4 /* HIGH period of the SCL clock */ -#define TSUSTA 5 /* Set-up time for a repeated START condition */ -#define TSUSTO 4 /* Set-up time for STOP condition */ -#define TBUF 5 /* Bus-free time between STOP and START condition */ - -#define MAXBUSFREERETRIES 5 -#define MAXRETRIES 3 -#define WRITEADDRESS_MASK ( 0xFE ) -#define READADDRESS_MASK ( 0x01 ) -/**END GVC**/ - -#define SCL_HIGH 1 -#define SCL_LOW 0 -#define SDA_HIGH 1 -#define SDA_LOW 0 - -#ifdef CONFIG_ETRAX_I2C_USES_PB_NOT_PB_I2C -/* Use PB and not PB_I2C */ -#ifndef CONFIG_ETRAX_I2C_DATA_PORT -#define CONFIG_ETRAX_I2C_DATA_PORT 0 -#endif -#ifndef CONFIG_ETRAX_I2C_CLK_PORT -#define CONFIG_ETRAX_I2C_CLK_PORT 1 -#endif - -#define SDABIT CONFIG_ETRAX_I2C_DATA_PORT -#define SCLBIT CONFIG_ETRAX_I2C_CLK_PORT -#define i2c_enable() -#define i2c_disable() - -/* enable or disable output-enable, to select output or input on the i2c bus */ -#define i2c_sda_dir_out() \ - REG_SHADOW_SET( R_PORT_PB_DIR, port_pb_dir_shadow, SDABIT, 1 ) -#define i2c_sda_dir_in() \ - REG_SHADOW_SET( R_PORT_PB_DIR, port_pb_dir_shadow, SDABIT, 0 ) - -/* control the i2c clock and data signals */ -#define i2c_set_scl( x ) \ - REG_SHADOW_SET( R_PORT_PB_DATA, port_pb_data_shadow, SCLBIT, x ) -#define i2c_set_sda( x ) \ - REG_SHADOW_SET( R_PORT_PB_DATA, port_pb_data_shadow, SDABIT, x ) - -/* read status of SDA bit from the i2c interface */ -#define i2c_sda_is_high() ( ( ( *R_PORT_PB_READ & ( 1 << SDABIT ) ) ) >> SDABIT ) - -/**GVC**/ -/* read status of SCL bit from the i2c interface */ -#define i2c_scl_is_high() ( ( ( *R_PORT_PB_READ & ( 1 << SCLBIT ) ) ) >> SCLBIT ) -/**END GVC**/ - -#else -/* enable or disable the i2c interface */ -#define i2c_enable() *R_PORT_PB_I2C = ( port_pb_i2c_shadow |= IO_MASK( R_PORT_PB_I2C, i2c_en ) ) -#define i2c_disable() *R_PORT_PB_I2C = ( port_pb_i2c_shadow &= ~IO_MASK( R_PORT_PB_I2C, i2c_en ) ) - -/* enable or disable output-enable, to select output or input on the i2c bus */ -#define i2c_sda_dir_out() \ - *R_PORT_PB_I2C = ( port_pb_i2c_shadow &= ~IO_MASK( R_PORT_PB_I2C, i2c_oe_ ) ); \ - REG_SHADOW_SET( R_PORT_PB_DIR, port_pb_dir_shadow, 0, 1 ); -#define i2c_sda_dir_in() \ - *R_PORT_PB_I2C = ( port_pb_i2c_shadow |= IO_MASK( R_PORT_PB_I2C, i2c_oe_ ) ); \ - REG_SHADOW_SET( R_PORT_PB_DIR, port_pb_dir_shadow, 0, 0 ); - -/* control the i2c clock and data signals */ -#define i2c_set_scl( x ) \ - *R_PORT_PB_I2C = ( port_pb_i2c_shadow = ( port_pb_i2c_shadow & \ - ~IO_MASK( R_PORT_PB_I2C, i2c_set_scl ) ) | IO_FIELD( R_PORT_PB_I2C, i2c_set_scl, ( x ) ) ); \ - REG_SHADOW_SET( R_PORT_PB_DATA, port_pb_data_shadow, 1, x ); - -#define i2c_set_sda( x ) \ - *R_PORT_PB_I2C = ( port_pb_i2c_shadow = ( port_pb_i2c_shadow & \ - ~IO_MASK( R_PORT_PB_I2C, i2c_d ) ) | IO_FIELD( R_PORT_PB_I2C, i2c_d, ( x ) ) ); \ - REG_SHADOW_SET( R_PORT_PB_DATA, port_pb_data_shadow, 0, x ); - -/* read a bit from the i2c interface */ -#define i2c_sda_is_high() ( *R_PORT_PB_READ & 0x1 ) -#endif - -/* use the kernels delay routine */ -#define i2c_delay( usecs ) udelay( usecs ) - - -/****************** TYPEDEF's **********************/ - - -/****************** STATIC (file scope) VARIABLES **********************/ -static DEFINE_SPINLOCK( i2c_lock ); /* Protect directions etc */ -/**GVC**/ -#ifdef DYNAMIC_MAJOR_I2CDEV_NUMBER_ALLOC -static const char i2c_name[] = "i2cgvc"; -#else -static const char i2c_name[] = "i2c"; -#endif -/**END GVC**/ - - -/****************** PROTOTYPING SECTION *************************/ -static int i2c_open( struct inode *inode, struct file *filp ); -static int i2c_release( struct inode *inode, struct file *filp ); -/**GVC**/ -static int i2c_command( unsigned char slave - , unsigned char* wbuf - , unsigned char wlen - , unsigned char* rbuf - , unsigned char rlen - ); -static int i2c_bus_free_check( unsigned char maxretries ); -static void i2c_finalise( const char* text, unsigned long irqflags ); -/**END GVC**/ - - -/************************************************************************/ -/****************** AUXILIARIES *************************/ -/************************************************************************/ - -/*#--------------------------------------------------------------------------- - *# - *# FUNCTION NAME: i2c_open - *# - *# DESCRIPTION : opens an I2C device - *# - *# PARAMETERS : *inode: reference to inode - *# *filp : reference to file pointer - *# - *#--------------------------------------------------------------------------- - */ -static int i2c_open( struct inode *inode, struct file *filp ) -{ - return 0; -} /* i2c_open */ - - -/*#--------------------------------------------------------------------------- - *# - *# FUNCTION NAME: i2c_release - *# - *# DESCRIPTION : Releases the I2C device - *# - *# PARAMETERS : *inode: reference to inode - *# *filp : reference to file pointer - *# - *#--------------------------------------------------------------------------- - */ -static int i2c_release( struct inode *inode, struct file *filp ) -{ - return 0; -} /* i2c_release */ - - -/*#--------------------------------------------------------------------------- - *# - *# FUNCTION NAME: i2c_ioctl - *# - *# DESCRIPTION : Main device API: ioctl's to write/read - *# to/from i2c registers - *# - *# PARAMETERS : *inode: reference to inode - *# *filp : reference to file pointer - *# cmd : command to be executed during the ioctl call - *# arg : pointer to a structure with the data??? - *# - *# RETURN : result of the ioctl call - *# - *#--------------------------------------------------------------------------- - */ -static int i2c_ioctl( struct inode *inode - , struct file *file - , unsigned int cmd - , unsigned long arg - ) -{ - /* the acme ioctls */ - I2C_DATA i2cdata; - int RetVal = EI2CNOERRORS; - - if ( _IOC_TYPE( cmd ) != ETRAXI2C_IOCTYPE ) - { - return ( -EINVAL ); - } - - switch ( _IOC_NR( cmd ) ) - { - case I2C_WRITEREG: - /* write to an i2c slave */ - RetVal = i2c_writereg( I2C_ARGSLAVE( arg ) - , I2C_ARGREG( arg ) - , I2C_ARGVALUE( arg ) - ); - break; - - case I2C_READREG: - RetVal = i2c_readreg( I2C_ARGSLAVE( arg ), I2C_ARGREG( arg ) ); - break; - -/**GVC**/ - /* New functions added by GVC */ - case I2C_READ: - copy_from_user( (char*)&i2cdata, (char*)arg, sizeof( I2C_DATA ) ); - { - int RetryCntr = MAXRETRIES; - - do - { - RetVal = i2c_command( i2cdata.slave - , NULL - , 0 - , i2cdata.rbuf - , i2cdata.rlen - ); - } while ( ( EI2CNOERRORS != RetVal ) - &&( --RetryCntr ) - ); - } - copy_to_user( (char*)arg, (char*)&i2cdata, sizeof( I2C_DATA ) ); - break; - - case I2C_WRITE: - copy_from_user( (char*)&i2cdata, (char*)arg, sizeof( I2C_DATA ) ); - { - int RetryCntr = MAXRETRIES; - - do - { - RetVal = i2c_command( i2cdata.slave - , i2cdata.wbuf - , i2cdata.wlen - , NULL - , 0 - ); - } while ( ( EI2CNOERRORS != RetVal ) - &&( --RetryCntr ) - ); - } - break; - - case I2C_WRITEREAD: - copy_from_user( (char*)&i2cdata, (char*)arg, sizeof( I2C_DATA ) ); - { - int RetryCntr = MAXRETRIES; - - do - { - RetVal = i2c_command( i2cdata.slave - , i2cdata.wbuf - , i2cdata.wlen - , i2cdata.rbuf - , i2cdata.rlen - ); - } while ( ( EI2CNOERRORS != RetVal ) - &&( --RetryCntr ) - ); - } - copy_to_user( (char*)arg, (char*)&i2cdata, sizeof( I2C_DATA ) ); - break; -/**END GVC**/ - - default: - RetVal = -EINVAL; - } - - return ( -RetVal ); -} /* i2c_ioctl */ - - -/*#--------------------------------------------------------------------------- - *# - *# FUNCTION NAME: i2c_command - *# - *# DESCRIPTION : general routine to read/write bytes from an I2C device - *# - *# 'i2c_command()' sends wlen bytes to the I2c bus and receives - *# rlen bytes from the I2c bus. - *# The data to be send must be placed in wbuf[ 0 ] upto wbuf[ wlen - 1 ). - *# The data to be received is assembled in rbuf[ 0 ] upto rbuf[ rlen - 1 ]. - *# - *# If no data is to be sent or received, put appropriate buffer parameter - *# to "NULL" and appropriate length parameter to "0". - *# - *# PARAMETERS : slave = slave address of the I2C device - *# wbuf = address of first element of write buffer (wbuf) - *# wlen = number of bytes to be written to slave - *# rbuf = address of first element of read buffer (rbuf) - *# rlen = number of bytes to be read from slave - *# - *# RETURN : - *# EI2CNOERRORS: I2C communication went fine - *# EI2CBUSNFREE: I2C bus is not free - *# EI2CWADDRESS: I2C write address failed - *# EI2CRADDRESS: I2C read address failed - *# EI2CSENDDATA: I2C send data failed - *# EI2CRECVDATA: I2C receive data failed - *# EI2CSTRTCOND: I2C start condition failed - *# EI2CRSTACOND: I2C repeated start condition failed - *# EI2CSTOPCOND: I2C stop condition failed - *# EI2CNOSNDBYT: I2C no bytes to be sent - *# EI2CNOSNDBUF: I2C no send buffer defined - *# EI2CNORCVBYT: I2C no bytes to be received - *# EI2CNORCVBUF: I2C no receive buffer defined - *# EI2CNOACKNLD: I2C no acknowledge received - *# - *# REMARK : - *# First, the send part is completed. - *# In the send routine, there is no stop generated. This is because maybe - *# a repeated start condition must be generated. - *# This happens when we want to receive some data from the I2c bus. If not, - *# at the end of the general I2c loop the stopcondition is generated. - *# If, on the contrary, there are a number of bytes to be received, a new - *# startcondition is generated in the 'if' part of the main I2c routine, - *# which controls the receiving part. - *# Only when the receiving of data is finished, a final stopcondition is - *# generated. - *# - *#--------------------------------------------------------------------------- - */ -static int i2c_command( unsigned char slave - , unsigned char* wbuf - , unsigned char wlen - , unsigned char* rbuf - , unsigned char rlen - ) -{ - /* Check arguments and report error if relevant... */ - if ( ( wlen > 0 ) && ( wbuf == NULL ) ) - { - printk( KERN_DEBUG "I2C: EI2CNOSNDBUF\n" ); - return ( EI2CNOSNDBUF ); - } - else if ( ( wlen == 0 ) && ( wbuf != NULL ) ) - { - printk( KERN_DEBUG "I2C: EI2CNOSNDBYT\n" ); - return ( EI2CNOSNDBYT ); - } - else if ( ( rlen > 0 ) && ( rbuf == NULL ) ) - { - printk( KERN_DEBUG "I2C: EI2CNORCVBUF\n" ); - return ( EI2CNORCVBUF ); - } - else if ( ( rlen == 0 ) && ( rbuf != NULL ) ) - { - printk( KERN_DEBUG "I2C: EI2CNORCVBYT\n" ); - return ( EI2CNORCVBYT ); - } - else if ( EI2CBUSNFREE == i2c_bus_free_check( MAXBUSFREERETRIES ) ) - { - /* There's no need to try more, since we weren't even - * able to start the I2C communication. - * So, no IRQ flags are stored yet, no changes to any other - * stuff like START, STOP, SENDBYTES... - * Result, simply write down the error and return the correct error code. - */ - printk( KERN_DEBUG "I2C: EI2CBUSNFREE\n" ); - return ( EI2CBUSNFREE ); - } - else - { - /* Finally... We made it... */ - unsigned long irqflags = 0; - - /* we don't like to be interrupted */ - local_irq_save( irqflags ); - - /* Check if there are bytes to be send, - * or if you immediately want to receive data. - */ - if ( 0 < wlen ) - { - /* start I2C communication */ - if ( EI2CNOERRORS != i2c_start() ) - { - return ( i2c_finalise( "I2C: EI2CSTRTCOND\n", irqflags ) - , EI2CSTRTCOND - ); - } - - /* send slave address: xxxxxxx0B (last bit must be zero) */ - if ( EI2CNOERRORS != i2c_outbyte( slave & WRITEADDRESS_MASK ) ) - { - return ( i2c_finalise( "I2C: EI2CWADDRESS\n", irqflags ) - , EI2CWADDRESS - ); - } - - while ( wlen-- ) - { - /* send register data */ - if ( EI2CNOERRORS != i2c_outbyte( *wbuf ) ) - { - return ( i2c_finalise( "I2C: EI2CSENDDATA\n", irqflags ) - , EI2CSENDDATA - ); - } - - wbuf++; - }; - - i2c_delay( TLOW ); - } - - /* - * Receiving data from I2c_bus - * If there are bytes to be received, a new start condition is - * generated => Repeated Startcondition. - * A final stopcondition is generated at the end of the main I2c - * routine. - */ - if ( 0 < rlen ) - { - /* - * Generate start condition if wlen == 0 - * or repeated start condition if wlen != 0... - */ - if ( EI2CNOERRORS != i2c_start() ) - { - return ( i2c_finalise( ( ( 0 < wlen ) - ? "I2C: EI2CRSTACOND\n" - : "I2C: EI2CSTRTCOND\n" - ) - , irqflags - ) - , ( ( 0 < wlen ) ? EI2CRSTACOND : EI2CSTRTCOND ) - ); - } - - /* Send ReadAddress: xxxxxxx1B (last bit must be one) */ - if ( EI2CNOERRORS != i2c_outbyte( slave | READADDRESS_MASK ) ) - { - return ( i2c_finalise( "I2C: EI2CRADDRESS\n", irqflags ) - , EI2CRADDRESS - ); - } - - while ( rlen-- ) - { - /* fetch register */ - *rbuf = i2c_inbyte(); - rbuf++; - - /* last received byte needs to be NACK-ed instead of ACK-ed */ - if ( rlen ) - { - i2c_sendack(); - } - else - { - i2c_sendnack(); - } - }; - } - - /* Generate final stop condition */ - if ( EI2CNOERRORS != i2c_stop() ) - { - return ( i2c_finalise( "I2C: EI2CSTOPCOND\n", irqflags ) - , EI2CSTOPCOND - ); - } - - /* enable interrupt again */ - local_irq_restore( irqflags ); - } - - return ( EI2CNOERRORS ); -} /* i2c_command */ - - -/*#--------------------------------------------------------------------------- - *# - *# FUNCTION NAME: i2c_bus_free_check - *# - *# DESCRIPTION : checks if the I2C bus is free before starting - *# an I2C communication - *# - *# PARAMETERS : maxretries, the number of times we will try to release - *# the I2C bus - *# - *# RETURN : I2cStatus_I2cBusNotFreeError in case the bus is not free, - *# I2cStatus_I2cNoError otherwise - *# - *#--------------------------------------------------------------------------- - */ -static int i2c_bus_free_check( unsigned char maxretries ) -{ - i2c_sda_dir_in(); /* Release SDA line */ - i2c_set_scl( SCL_HIGH ); /* put SCL line high */ - - i2c_delay( WAITONEUS ); - - while ( ( !i2c_sda_is_high() || !i2c_scl_is_high() ) - &&( maxretries-- ) - ) - { - /* Try to release I2C bus by generating STOP conditions */ - i2c_stop(); - } - - if ( 0 == maxretries ) - { - printk( KERN_DEBUG "I2C: EI2CBUSNFREE\n" ); - return ( EI2CBUSNFREE ); - } - else - { - return ( EI2CNOERRORS ); - } -} /* i2c_bus_free_check */ - - -static void i2c_finalise( const char* errortxt - , unsigned long irqflags - ) -{ - printk( KERN_DEBUG "%s", errortxt ); - local_irq_restore( irqflags ); - /* The least we can do when things go terribly wrong, - * is to try to release the bus. - * If this fails, well, then I don't know - * what I can do more for the moment... - */ - (void)i2c_bus_free_check( MAXBUSFREERETRIES ); -} /* i2c_finalise */ - - -static struct file_operations i2c_fops = -{ - .owner = THIS_MODULE -, .ioctl = i2c_ioctl -, .open = i2c_open -, .release = i2c_release -}; - - -/***********************************************************************/ -/************* EXTERNAL FUNCTION DEFINITION SECTION ********************/ -/***********************************************************************/ - -/*#--------------------------------------------------------------------------- - *# - *# FUNCTION NAME: i2c_init - *# - *# DESCRIPTION : initialises the I2C device driver - *# - *# PARAMETERS : - *# - *#--------------------------------------------------------------------------- - */ -int __init i2c_init( void ) -{ - static int res = 0; - static int first = 1; - - if ( !first ) - { - return res; - } - - first = 0; - - /* Setup and enable the Port B I2C interface */ - -#ifndef CONFIG_ETRAX_I2C_USES_PB_NOT_PB_I2C - /* here, we're using the dedicated I2C pins of FoxBoard */ - if ( ( res = cris_request_io_interface( if_i2c, "I2C" ) ) ) - { - printk( KERN_CRIT "i2c_init: Failed to get IO interface\n" ); - return res; - } - - *R_PORT_PB_I2C = port_pb_i2c_shadow |= - IO_STATE( R_PORT_PB_I2C, i2c_en, on ) | - IO_FIELD( R_PORT_PB_I2C, i2c_d, 1 ) | - IO_FIELD( R_PORT_PB_I2C, i2c_set_scl, 1 ) | - IO_STATE( R_PORT_PB_I2C, i2c_oe_, enable ); - - port_pb_dir_shadow &= ~IO_MASK( R_PORT_PB_DIR, dir0 ); - port_pb_dir_shadow &= ~IO_MASK( R_PORT_PB_DIR, dir1 ); - - *R_PORT_PB_DIR = ( port_pb_dir_shadow |= - IO_STATE( R_PORT_PB_DIR, dir0, input ) | - IO_STATE( R_PORT_PB_DIR, dir1, output ) ); -#else - /* If everything goes fine, res = 0, meaning "if" fails => - * will do the "else" too and as such initialise the clock port... - * Clever trick! - */ - if ( ( res = cris_io_interface_allocate_pins( if_i2c - , 'b' - , CONFIG_ETRAX_I2C_DATA_PORT - , CONFIG_ETRAX_I2C_DATA_PORT - ) - ) - ) - { - printk( KERN_WARNING "i2c_init: Failed to get IO pin for I2C data port\n" ); - return ( res ); - } - /* Same here...*/ - else if ( ( res = cris_io_interface_allocate_pins( if_i2c - , 'b' - , CONFIG_ETRAX_I2C_CLK_PORT - , CONFIG_ETRAX_I2C_CLK_PORT - ) - ) - ) - { - cris_io_interface_free_pins( if_i2c - , 'b' - , CONFIG_ETRAX_I2C_DATA_PORT - , CONFIG_ETRAX_I2C_DATA_PORT - ); - printk( KERN_WARNING "i2c_init: Failed to get IO pin for I2C clk port\n" ); - } -#endif - - return ( res ); -} /* i2c_init */ - - -/*#--------------------------------------------------------------------------- - *# - *# FUNCTION NAME: i2c_register - *# - *# DESCRIPTION : this registers the i2c driver as a character device - *# - *# PARAMETERS : - *# - *#--------------------------------------------------------------------------- - */ -static int __init i2c_register( void ) -{ - int res; -/**GVC**/ -#ifdef DYNAMIC_MAJOR_I2CDEV_NUMBER_ALLOC - dev_t devt; - struct cdev *my_i2cdev = NULL; -#endif -/**END GVC**/ - - res = i2c_init(); - - if ( res < 0 ) - { - return res; - } - -/**GVC**/ -#ifdef DYNAMIC_MAJOR_I2CDEV_NUMBER_ALLOC - res = alloc_chrdev_region( &devt, 0, 1, i2c_name ); - - if ( res < 0 ) - { - printk( KERN_DEBUG "I2C: EI2CNOMNUMBR\n" ); - return ( res ); - } - - my_i2cdev = cdev_alloc(); - my_i2cdev->ops = &i2c_fops; - my_i2cdev->owner = THIS_MODULE; - - /* make device "alive" */ - res = cdev_add( my_i2cdev, devt, 1 ); - - if ( res < 0 ) - { - printk( KERN_DEBUG "I2C: EI2CDADDFAIL\n" ); - return ( res ); - } -#else -/**END GVC**/ - res = register_chrdev( I2C_MAJOR, i2c_name, &i2c_fops ); - - if ( res < 0 ) - { - printk( KERN_ERR "i2c: couldn't get a major number.\n" ); - return res; - } -/**GVC**/ -#endif -/**END GVC**/ - - printk( KERN_INFO "I2C driver v2.2, (c) 1999-2004 Axis Communications AB\n" ); - -/**GVC**/ - printk( KERN_INFO " ==> Improvements done by Geert Vancompernolle - December 2006\n" ); - -#ifdef DYNAMIC_MAJOR_I2CDEV_NUMBER_ALLOC - printk( KERN_INFO "I2C Major: %d / I2C Name: %s\n", MAJOR( devt ), i2c_name ); -#else -/**END GVC**/ - printk( KERN_INFO "I2C Major: %d / I2C Name: %s\n", I2C_MAJOR, i2c_name ); -/**GVC**/ -#endif -/**END GVC**/ - - return ( 0 ); -} /* i2c_register */ - - -/*#--------------------------------------------------------------------------- - *# - *# FUNCTION NAME: i2c_start - *# - *# DESCRIPTION : generate i2c start condition - *# - *# PARAMETERS : none - *# - *# RETURN : EI2CNOERRORS if OK, EI2CSTRTCOND otherwise - *# - *#--------------------------------------------------------------------------- - */ -int i2c_start( void ) -{ - /* Set SCL=1, SDA=1 */ - i2c_sda_dir_out(); - i2c_set_sda( SDA_HIGH ); - i2c_delay( WAITONEUS ); - i2c_set_scl( SCL_HIGH ); - i2c_delay( WAITONEUS ); - - /* Set SCL=1, SDA=0 */ - i2c_set_sda( SDA_LOW ); - i2c_delay( THDSTA ); - - /* Set SCL=0, SDA=0 */ - i2c_set_scl( SCL_LOW ); - /* We can take 1 us less than defined in spec (5 us), since the next action - * will be to set the dataline high or low and this action is 1 us - * before the clock is put high, so that makes our 5 us. - */ - i2c_delay( TLOW - WAITONEUS ); - - if ( i2c_sda_is_high() || i2c_scl_is_high() ) - { - printk( KERN_DEBUG "I2C: EI2CSTRTCOND\n" ); - return ( EI2CSTRTCOND ); - } - - return ( EI2CNOERRORS ); -} /* i2c_start */ - - -/*#--------------------------------------------------------------------------- - *# - *# FUNCTION NAME: i2c_stop - *# - *# DESCRIPTION : generate i2c stop condition - *# - *# PARAMETERS : none - *# - *# RETURN : none - *# - *#--------------------------------------------------------------------------- - */ -int i2c_stop( void ) -{ - i2c_sda_dir_out(); - - /* Set SCL=0, SDA=0 */ - /* Don't change order, otherwise you might generate a start condition! */ - i2c_set_scl( SCL_LOW ); - i2c_delay( WAITONEUS ); - i2c_set_sda( SDA_LOW ); - i2c_delay( WAITONEUS ); - - /* Set SCL=1, SDA=0 */ - i2c_set_scl( SCL_HIGH ); - i2c_delay( TSUSTO ); - - /* Set SCL=1, SDA=1 */ - i2c_set_sda( SDA_HIGH ); - i2c_delay( TBUF ); - - i2c_sda_dir_in(); - - if ( !i2c_sda_is_high() || !i2c_scl_is_high() ) - { - printk( KERN_DEBUG "I2C: EI2CSTOPCOND\n" ); - return ( EI2CSTOPCOND ); - } - - return ( EI2CNOERRORS ); -} /* i2c_stop */ - - -/*#--------------------------------------------------------------------------- - *# - *# FUNCTION NAME: i2c_outbyte - *# - *# DESCRIPTION : write a byte to the i2c interface - *# - *# PARAMETERS : x: byte to be sent on the I2C bus - *# - *# RETURN : none - *# - *#--------------------------------------------------------------------------- - */ -int i2c_outbyte( unsigned char x ) -{ - int i; - - i2c_sda_dir_out(); - - for ( i = 0; i < 8; i++ ) - { - if ( x & 0x80 ) - { - i2c_set_sda( SDA_HIGH ); - } - else - { - i2c_set_sda( SDA_LOW ); - } - - i2c_delay( TSUDAT ); - i2c_set_scl( SCL_HIGH ); - i2c_delay( THIGH ); - i2c_set_scl( SCL_LOW ); - i2c_delay( TSUDAT ); - i2c_set_sda( SDA_LOW ); - /* There should be only 5 us between falling edge and new rising - * edge of clock pulse. - * Since we spend already 1 us since clock edge was low, there are - * only ( TLOW - TSUDAT ) us left. - * Next to this, since the data line will be set up 1 us before the - * clock line is set up, we can reduce the delay with another us. - */ - i2c_delay( TLOW - TSUDAT - WAITONEUS ); - x <<= 1; - } - - /* enable input */ - i2c_sda_dir_in(); - - if ( !i2c_getack() ) - { - printk( KERN_DEBUG "I2C: EI2CNOACKNLD\n" ); - return( EI2CNOACKNLD ); - } - - return ( EI2CNOERRORS ); -} /* i2c_outbyte */ - - -/*#--------------------------------------------------------------------------- - *# - *# FUNCTION NAME: i2c_inbyte - *# - *# DESCRIPTION : read a byte from the i2c interface - *# - *# PARAMETERS : none - *# - *# RETURN : returns the byte read from the I2C device - *# - *#--------------------------------------------------------------------------- - */ -unsigned char i2c_inbyte( void ) -{ - unsigned char aBitByte = 0; - unsigned char Mask = 0x80; /* !!! ATTENTION: do NOT use 'char', otherwise shifting is wrong!!! */ - /* Must be UNSIGNED, not SIGNED! */ - - - /* Switch off I2C to get bit */ - i2c_disable(); - i2c_sda_dir_in(); - - while ( Mask != 0 ) - { - i2c_set_scl( SCL_HIGH ); - i2c_delay( THIGH ); - - if ( i2c_sda_is_high() ) - { - aBitByte |= Mask; - } - - i2c_set_scl( SCL_LOW ); - - Mask >>= 1; - - i2c_delay( TLOW ); - } - - /* - * we leave the clock low, getbyte is usually followed - * by sendack/nack, they assume the clock to be low - */ - return ( aBitByte ); -} /* i2c_inbyte */ - - -/*#--------------------------------------------------------------------------- - *# - *# FUNCTION NAME: i2c_getack - *# - *# DESCRIPTION : checks if ack was received from ic2 - *# - *# PARAMETERS : none - *# - *# RETURN : returns the ack state of the I2C device - *# - *#--------------------------------------------------------------------------- - */ -int i2c_getack( void ) -{ - int ack = 1; - - /* generate ACK clock pulse */ - i2c_set_scl( SCL_HIGH ); - - /* switch off I2C */ - i2c_disable(); - - /* now wait for ack */ - i2c_delay( THIGH ); - /* check for ack: if SDA is high, then NACK, else ACK */ - if ( i2c_sda_is_high() ) - { - ack = 0; - } - else - { - ack = 1; - } - - /* end clock pulse */ - i2c_enable(); - i2c_set_scl( SCL_LOW ); - i2c_sda_dir_out(); - i2c_set_sda( SDA_LOW ); - - /* Since we "lost" already THDDAT time, we can subtract it here... */ - i2c_delay( TLOW - THDDAT ); - - return ( ack ); -} /* i2c_getack */ - - -/*#--------------------------------------------------------------------------- - *# - *# FUNCTION NAME: i2c_sendack - *# - *# DESCRIPTION : sends ACK on received data - *# - *# PARAMETERS : none - *# - *# RETURN : none - *# - *#--------------------------------------------------------------------------- - */ -void i2c_sendack( void ) -{ - /* enable output */ - /* Clock has been set to TLOW already at end of i2c_inbyte() - * and i2c_outbyte(), so no need to do it again. - */ - i2c_sda_dir_out(); - /* set ack pulse low */ - i2c_set_sda( SDA_LOW ); - /* generate clock pulse */ - i2c_delay( TSUDAT ); - i2c_set_scl( SCL_HIGH ); - i2c_delay( THIGH ); - i2c_set_scl( SCL_LOW ); - i2c_delay( THDDAT ); - /* reset data out */ - i2c_set_sda( SDA_HIGH ); - /* Subtract time spend already when waited to put SDA high */ - i2c_delay( TLOW - THDDAT ); - - /* release the SDA line */ - i2c_sda_dir_in(); -} /* i2c_sendack */ - - -/*#--------------------------------------------------------------------------- - *# - *# FUNCTION NAME: i2c_sendnack - *# - *# DESCRIPTION : sends NACK on received data - *# - *# PARAMETERS : none - *# - *# RETURN : none - *# - *#--------------------------------------------------------------------------- - */ -void i2c_sendnack( void ) -{ - /* make sure the SDA line is set high prior to activation of the output. - * this way, you avoid an unnecessary peak to ground when a NACK has to - * be created. - */ - /* set data high */ - i2c_set_sda( SDA_HIGH ); - /* enable output */ - i2c_sda_dir_out(); - - /* generate clock pulse */ - i2c_delay( TSUDAT ); - i2c_set_scl( SCL_HIGH ); - i2c_delay( THIGH ); - i2c_set_scl( SCL_LOW ); - i2c_delay( TSUDAT ); - i2c_set_sda( SDA_LOW ); - i2c_delay( TLOW - TSUDAT ); - - /* There's no need to change the direction of SDA to "in" again, - * since a NACK is always followed by a stop condition. - * A STOP condition will put the direction of SDA back to "out" - * resulting in a useless SDA "dip" on the line... - */ - /* i2c_sda_dir_in(); */ -} /* i2c_sendnack */ - - -/*#--------------------------------------------------------------------------- - *# - *# FUNCTION NAME: i2c_writereg - *# - *# DESCRIPTION : writes a value to a register of an I2C device - *# - *# PARAMETERS : theSlave = slave address of the I2C device - *# theReg = register of the I2C device that needs to be written - *# theValue = value to be written to the register - *# - *# RETURN : returns OR-ed result of the write action: - *# 0 = Ok - *# 1 = Slave_NoAck - *# 2 = Reg_NoAck - *# 4 = Val_NoAck - *# - *#--------------------------------------------------------------------------- - */ -int i2c_writereg( unsigned char theSlave - , unsigned char theReg - , unsigned char theValue - ) -{ - int error, cntr = 3; - unsigned long flags; - - spin_lock( &i2c_lock ); - - do - { - error = 0; - /* we don't like to be interrupted */ - local_irq_save( flags ); - - i2c_start(); - /* send slave address */ - if ( EI2CNOACKNLD == i2c_outbyte( theSlave & 0xfe ) ) - { - error = 1; - } - - /* now select register */ - if ( EI2CNOACKNLD == i2c_outbyte( theReg ) ) - { - error |= 2; - } - - /* send register register data */ - if ( EI2CNOACKNLD == i2c_outbyte( theValue ) ) - { - error |= 4; - } - - /* end byte stream */ - i2c_stop(); - /* enable interrupt again */ - local_irq_restore( flags ); - - } while ( error && cntr-- ); - - i2c_delay( TLOW ); - - spin_unlock( &i2c_lock ); - - return ( -error ); -} /* i2c_writereg */ - - -/*#--------------------------------------------------------------------------- - *# - *# FUNCTION NAME: i2c_readreg - *# - *# DESCRIPTION : reads the value from a certain register of an I2C device. - *# Function first writes the register that it wants to read - *# later on. - *# - *# PARAMETERS : theSlave = slave address of the I2C device - *# theReg = register of the I2C device that needs to be written - *# - *# RETURN : returns OR-ed result of the write action: - *# 0 = Ok - *# 1 = Slave_NoAck - *# 2 = Reg_NoAck - *# 4 = Val_NoAck - *# - *#--------------------------------------------------------------------------- - */ -unsigned char i2c_readreg( unsigned char theSlave - , unsigned char theReg - ) -{ - unsigned char b = 0; - int error, cntr = 3; - unsigned long flags; - - spin_lock( &i2c_lock ); - - do - { - error = 0; - - /* we don't like to be interrupted */ - local_irq_save( flags ); - - /* generate start condition */ - i2c_start(); - - /* send slave address */ - if ( EI2CNOACKNLD == i2c_outbyte( theSlave & 0xfe ) ) - { - error = 1; - } - - /* now select register */ - i2c_sda_dir_out(); - - if ( EI2CNOACKNLD == i2c_outbyte( theReg ) ) - { - error |= 2; - } - - /* repeat start condition */ - i2c_delay( TLOW ); - i2c_start(); - - /* send slave address */ - if ( EI2CNOACKNLD == i2c_outbyte( theSlave | 0x01 ) ) - { - error |= 1; - } - - /* fetch register */ - b = i2c_inbyte(); - /* - * last received byte needs to be nacked - * instead of acked - */ - i2c_sendnack(); - - /* end sequence */ - i2c_stop(); - - /* enable interrupt again */ - local_irq_restore( flags ); - - } while ( error && cntr-- ); - - spin_unlock( &i2c_lock ); - - return ( b ); -} /* i2c_readreg */ - - -/*#--------------------------------------------------------------------------- - *# - *# FUNCTION NAME: i2c_read - *# - *# DESCRIPTION : - *# - *# PARAMETERS : - *# - *# RETURN : - *# - *#--------------------------------------------------------------------------- - */ -int i2c_read( unsigned char slave, unsigned char* rbuf, unsigned char rlen ) -{ - return ( i2c_command( slave, NULL, 0, rbuf, rlen ) ); -} /* i2c_read */ - - -/*#--------------------------------------------------------------------------- - *# - *# FUNCTION NAME: i2c_write - *# - *# DESCRIPTION : - *# - *# PARAMETERS : - *# - *# RETURN : - *# - *#--------------------------------------------------------------------------- - */ -int i2c_write( unsigned char slave, unsigned char* wbuf, unsigned char wlen ) -{ - return ( i2c_command( slave, wbuf, wlen, NULL, 0 ) ); -} /* i2c_write */ - - -/*#--------------------------------------------------------------------------- - *# - *# FUNCTION NAME: i2c_writeread - *# - *# DESCRIPTION : - *# - *# PARAMETERS : - *# - *# RETURN : - *# - *#--------------------------------------------------------------------------- - */ -int i2c_writeread( unsigned char slave - , unsigned char* wbuf - , unsigned char wlen - , unsigned char* rbuf - , unsigned char rlen - ) -{ - return ( i2c_command( slave, wbuf, wlen, rbuf, rlen ) ); -} /* i2c_writeread */ - - -/*#--------------------------------------------------------------------------- - *# - *# FUNCTION NAME: module_init - *# - *# DESCRIPTION : this makes sure that i2c_register is called during boot - *# - *# PARAMETERS : - *# - *#--------------------------------------------------------------------------- - */ -module_init( i2c_register ); - -/****************** END OF FILE i2c.c ********************************/ diff --git a/target/linux/etrax/files-2.6.25/arch/cris/arch-v10/drivers/i2c_gvc.h b/target/linux/etrax/files-2.6.25/arch/cris/arch-v10/drivers/i2c_gvc.h deleted file mode 100644 index cac2d46..0000000 --- a/target/linux/etrax/files-2.6.25/arch/cris/arch-v10/drivers/i2c_gvc.h +++ /dev/null @@ -1,30 +0,0 @@ -#ifndef _I2C_H -#define _I2C_H - -int i2c_init(void); - -/* High level I2C actions */ -int i2c_writereg(unsigned char theSlave, unsigned char theReg, unsigned char theValue); -unsigned char i2c_readreg(unsigned char theSlave, unsigned char theReg); - -/* Low level I2C */ -int i2c_start(void); -int i2c_stop(void); -int i2c_outbyte(unsigned char x); -unsigned char i2c_inbyte(void); -int i2c_getack(void); -void i2c_sendack(void); -void i2c_sendnack(void); - -/**GVC**/ -/* New low level I2C functions */ -int i2c_read( unsigned char slave, unsigned char* rbuf, unsigned char rlen ); -int i2c_write( unsigned char slave, unsigned char* wbuf, unsigned char wlen ); -int i2c_writeread( unsigned char slave - , unsigned char* wbuf - , unsigned char wlen - , unsigned char* rbuf - , unsigned char rlen - ); -/**END GVC**/ -#endif /* _I2C_H */ diff --git a/target/linux/etrax/files-2.6.25/drivers/usb/host/hc-cris-dbg.h b/target/linux/etrax/files-2.6.25/drivers/usb/host/hc-cris-dbg.h deleted file mode 100644 index f53f558..0000000 --- a/target/linux/etrax/files-2.6.25/drivers/usb/host/hc-cris-dbg.h +++ /dev/null @@ -1,141 +0,0 @@ - -/* macros for debug output */ - -#define hcd_dbg(hcd, fmt, args...) \ - dev_info(hcd->self.controller, fmt, ## args) -#define hcd_err(hcd, fmt, args...) \ - dev_err(hcd->self.controller, fmt, ## args) -#define hcd_info(hcd, fmt, args...) \ - dev_info(hcd->self.controller, fmt, ## args) -#define hcd_warn(hcd, fmt, args...) \ - dev_warn(hcd->self.controller, fmt, ## args) - -/* -#define devdrv_dbg(fmt, args...) \ - printk(KERN_INFO "usb_devdrv dbg: ");printk(fmt, ## args) -*/ -#define devdrv_dbg(fmt, args...) {} - -#define devdrv_err(fmt, args...) \ - printk(KERN_ERR "usb_devdrv error: ");printk(fmt, ## args) -#define devdrv_info(fmt, args...) \ - printk(KERN_INFO "usb_devdrv: ");printk(fmt, ## args) - -#define irq_dbg(fmt, args...) \ - printk(KERN_INFO "crisv10_irq dbg: ");printk(fmt, ## args) -#define irq_err(fmt, args...) \ - printk(KERN_ERR "crisv10_irq error: ");printk(fmt, ## args) -#define irq_warn(fmt, args...) \ - printk(KERN_INFO "crisv10_irq warn: ");printk(fmt, ## args) -#define irq_info(fmt, args...) \ - printk(KERN_INFO "crisv10_hcd: ");printk(fmt, ## args) - -/* -#define rh_dbg(fmt, args...) \ - printk(KERN_DEBUG "crisv10_rh dbg: ");printk(fmt, ## args) -*/ -#define rh_dbg(fmt, args...) {} - -#define rh_err(fmt, args...) \ - printk(KERN_ERR "crisv10_rh error: ");printk(fmt, ## args) -#define rh_warn(fmt, args...) \ - printk(KERN_INFO "crisv10_rh warning: ");printk(fmt, ## args) -#define rh_info(fmt, args...) \ - printk(KERN_INFO "crisv10_rh: ");printk(fmt, ## args) - -/* -#define tc_dbg(fmt, args...) \ - printk(KERN_INFO "crisv10_tc dbg: ");printk(fmt, ## args) -*/ -#define tc_dbg(fmt, args...) {while(0){}} - -#define tc_err(fmt, args...) \ - printk(KERN_ERR "crisv10_tc error: ");printk(fmt, ## args) -/* -#define tc_warn(fmt, args...) \ - printk(KERN_INFO "crisv10_tc warning: ");printk(fmt, ## args) -*/ -#define tc_warn(fmt, args...) {while(0){}} - -#define tc_info(fmt, args...) \ - printk(KERN_INFO "crisv10_tc: ");printk(fmt, ## args) - - -/* Debug print-outs for various traffic types */ - -#define intr_warn(fmt, args...) \ - printk(KERN_INFO "crisv10_intr warning: ");printk(fmt, ## args) -/* -#define intr_dbg(fmt, args...) \ - printk(KERN_DEBUG "crisv10_intr dbg: ");printk(fmt, ## args) -*/ -#define intr_dbg(fmt, args...) {while(0){}} - - -#define isoc_err(fmt, args...) \ - printk(KERN_ERR "crisv10_isoc error: ");printk(fmt, ## args) -/* -#define isoc_warn(fmt, args...) \ - printk(KERN_INFO "crisv10_isoc warning: ");printk(fmt, ## args) -*/ -#define isoc_warn(fmt, args...) {while(0){}} - -/* -#define isoc_dbg(fmt, args...) \ - printk(KERN_INFO "crisv10_isoc dbg: ");printk(fmt, ## args) -*/ -#define isoc_dbg(fmt, args...) {while(0){}} - -/* -#define timer_warn(fmt, args...) \ - printk(KERN_INFO "crisv10_timer warning: ");printk(fmt, ## args) -*/ -#define timer_warn(fmt, args...) {while(0){}} - -/* -#define timer_dbg(fmt, args...) \ - printk(KERN_INFO "crisv10_timer dbg: ");printk(fmt, ## args) -*/ -#define timer_dbg(fmt, args...) {while(0){}} - - -/* Debug printouts for events related to late finishing of URBs */ -/* -#define late_dbg(fmt, args...) \ - printk(KERN_INFO "crisv10_late dbg: ");printk(fmt, ## args) -*/ -#define late_dbg(fmt, args...) {while(0){}} - -#define late_warn(fmt, args...) \ - printk(KERN_INFO "crisv10_late warning: ");printk(fmt, ## args) -/* -#define errno_dbg(fmt, args...) \ - printk(KERN_INFO "crisv10_errno dbg: ");printk(fmt, ## args) -*/ -#define errno_dbg(fmt, args...) {while(0){}} - - -#define dma_dbg(fmt, args...) \ - printk(KERN_INFO "crisv10_dma dbg: ");printk(fmt, ## args) -#define dma_err(fmt, args...) \ - printk(KERN_ERR "crisv10_dma error: ");printk(fmt, ## args) -#define dma_warn(fmt, args...) \ - printk(KERN_INFO "crisv10_dma warning: ");printk(fmt, ## args) -#define dma_info(fmt, args...) \ - printk(KERN_INFO "crisv10_dma: ");printk(fmt, ## args) - - - -#define str_dir(pipe) \ - (usb_pipeout(pipe) ? "out" : "in") -#define str_type(pipe) \ - ({ \ - char *s = "?"; \ - switch (usb_pipetype(pipe)) { \ - case PIPE_ISOCHRONOUS: s = "iso"; break; \ - case PIPE_INTERRUPT: s = "intr"; break; \ - case PIPE_CONTROL: s = "ctrl"; break; \ - case PIPE_BULK: s = "bulk"; break; \ - }; \ - s; \ - }) diff --git a/target/linux/etrax/files-2.6.25/drivers/usb/host/hc-crisv10.c b/target/linux/etrax/files-2.6.25/drivers/usb/host/hc-crisv10.c deleted file mode 100644 index 146f689..0000000 --- a/target/linux/etrax/files-2.6.25/drivers/usb/host/hc-crisv10.c +++ /dev/null @@ -1,4985 +0,0 @@ -/* - * - * ETRAX 100LX USB Host Controller Driver - * - * Copyright (C) 2005 - 2008 Axis Communications AB - * - * Author: Konrad Eriksson <konrad.eriksson@axis.se> - * - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/moduleparam.h> -#include <linux/spinlock.h> -#include <linux/usb.h> -#include <linux/platform_device.h> - -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/arch/dma.h> -#include <asm/arch/io_interface_mux.h> - -#include "../core/hcd.h" -#include "../core/hub.h" -#include "hc-crisv10.h" -#include "hc-cris-dbg.h" - - -/***************************************************************************/ -/***************************************************************************/ -/* Host Controller settings */ -/***************************************************************************/ -/***************************************************************************/ - -#define VERSION "1.00-openwrt_diff" -#define COPYRIGHT "(c) 2005, 2006 Axis Communications AB" -#define DESCRIPTION "ETRAX 100LX USB Host Controller" - -#define ETRAX_USB_HC_IRQ USB_HC_IRQ_NBR -#define ETRAX_USB_RX_IRQ USB_DMA_RX_IRQ_NBR -#define ETRAX_USB_TX_IRQ USB_DMA_TX_IRQ_NBR - -/* Number of physical ports in Etrax 100LX */ -#define USB_ROOT_HUB_PORTS 2 - -const char hc_name[] = "hc-crisv10"; -const char product_desc[] = DESCRIPTION; - -/* The number of epids is, among other things, used for pre-allocating - ctrl, bulk and isoc EP descriptors (one for each epid). - Assumed to be > 1 when initiating the DMA lists. */ -#define NBR_OF_EPIDS 32 - -/* Support interrupt traffic intervals up to 128 ms. */ -#define MAX_INTR_INTERVAL 128 - -/* If periodic traffic (intr or isoc) is to be used, then one entry in the EP - table must be "invalid". By this we mean that we shouldn't care about epid - attentions for this epid, or at least handle them differently from epid - attentions for "valid" epids. This define determines which one to use - (don't change it). */ -#define INVALID_EPID 31 -/* A special epid for the bulk dummys. */ -#define DUMMY_EPID 30 - -/* Module settings */ - -MODULE_DESCRIPTION(DESCRIPTION); -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Konrad Eriksson <konrad.eriksson@axis.se>"); - - -/* Module parameters */ - -/* 0 = No ports enabled - 1 = Only port 1 enabled (on board ethernet on devboard) - 2 = Only port 2 enabled (external connector on devboard) - 3 = Both ports enabled -*/ -static unsigned int ports = 3; -module_param(ports, uint, S_IRUGO); -MODULE_PARM_DESC(ports, "Bitmask indicating USB ports to use"); - - -/***************************************************************************/ -/***************************************************************************/ -/* Shared global variables for this module */ -/***************************************************************************/ -/***************************************************************************/ - -/* EP descriptor lists for non period transfers. Must be 32-bit aligned. */ -static volatile struct USB_EP_Desc TxBulkEPList[NBR_OF_EPIDS] __attribute__ ((aligned (4))); - -static volatile struct USB_EP_Desc TxCtrlEPList[NBR_OF_EPIDS] __attribute__ ((aligned (4))); - -/* EP descriptor lists for period transfers. Must be 32-bit aligned. */ -static volatile struct USB_EP_Desc TxIntrEPList[MAX_INTR_INTERVAL] __attribute__ ((aligned (4))); -static volatile struct USB_SB_Desc TxIntrSB_zout __attribute__ ((aligned (4))); - -static volatile struct USB_EP_Desc TxIsocEPList[NBR_OF_EPIDS] __attribute__ ((aligned (4))); -static volatile struct USB_SB_Desc TxIsocSB_zout __attribute__ ((aligned (4))); - -static volatile struct USB_SB_Desc TxIsocSBList[NBR_OF_EPIDS] __attribute__ ((aligned (4))); - -/* After each enabled bulk EP IN we put two disabled EP descriptors with the eol flag set, - causing the DMA to stop the DMA channel. The first of these two has the intr flag set, which - gives us a dma8_sub0_descr interrupt. When we receive this, we advance the DMA one step in the - EP list and then restart the bulk channel, thus forcing a switch between bulk EP descriptors - in each frame. */ -static volatile struct USB_EP_Desc TxBulkDummyEPList[NBR_OF_EPIDS][2] __attribute__ ((aligned (4))); - -/* List of URB pointers, where each points to the active URB for a epid. - For Bulk, Ctrl and Intr this means which URB that currently is added to - DMA lists (Isoc URBs are all directly added to DMA lists). As soon as - URB has completed is the queue examined and the first URB in queue is - removed and moved to the activeUrbList while its state change to STARTED and - its transfer(s) gets added to DMA list (exception Isoc where URBs enter - state STARTED directly and added transfers added to DMA lists). */ -static struct urb *activeUrbList[NBR_OF_EPIDS]; - -/* Additional software state info for each epid */ -static struct etrax_epid epid_state[NBR_OF_EPIDS]; - -/* Timer handles for bulk traffic timer used to avoid DMA bug where DMA stops - even if there is new data waiting to be processed */ -static struct timer_list bulk_start_timer = TIMER_INITIALIZER(NULL, 0, 0); -static struct timer_list bulk_eot_timer = TIMER_INITIALIZER(NULL, 0, 0); - -/* We want the start timer to expire before the eot timer, because the former - might start traffic, thus making it unnecessary for the latter to time - out. */ -#define BULK_START_TIMER_INTERVAL (HZ/50) /* 20 ms */ -#define BULK_EOT_TIMER_INTERVAL (HZ/16) /* 60 ms */ - -/* Delay before a URB completion happen when it's scheduled to be delayed */ -#define LATER_TIMER_DELAY (HZ/50) /* 20 ms */ - -/* Simplifying macros for checking software state info of a epid */ -/* ----------------------------------------------------------------------- */ -#define epid_inuse(epid) epid_state[epid].inuse -#define epid_out_traffic(epid) epid_state[epid].out_traffic -#define epid_isoc(epid) (epid_state[epid].type == PIPE_ISOCHRONOUS ? 1 : 0) -#define epid_intr(epid) (epid_state[epid].type == PIPE_INTERRUPT ? 1 : 0) - - -/***************************************************************************/ -/***************************************************************************/ -/* DEBUG FUNCTIONS */ -/***************************************************************************/ -/***************************************************************************/ -/* Note that these functions are always available in their "__" variants, - for use in error situations. The "__" missing variants are controlled by - the USB_DEBUG_DESC/USB_DEBUG_URB macros. */ -static void __dump_urb(struct urb* purb) -{ - struct crisv10_urb_priv *urb_priv = purb->hcpriv; - int urb_num = -1; - if(urb_priv) { - urb_num = urb_priv->urb_num; - } - printk("\nURB:0x%x[%d]\n", (unsigned int)purb, urb_num); - printk("dev :0x%08lx\n", (unsigned long)purb->dev); - printk("pipe :0x%08x\n", purb->pipe); - printk("status :%d\n", purb->status); - printk("transfer_flags :0x%08x\n", purb->transfer_flags); - printk("transfer_buffer :0x%08lx\n", (unsigned long)purb->transfer_buffer); - printk("transfer_buffer_length:%d\n", purb->transfer_buffer_length); - printk("actual_length :%d\n", purb->actual_length); - printk("setup_packet :0x%08lx\n", (unsigned long)purb->setup_packet); - printk("start_frame :%d\n", purb->start_frame); - printk("number_of_packets :%d\n", purb->number_of_packets); - printk("interval :%d\n", purb->interval); - printk("error_count :%d\n", purb->error_count); - printk("context :0x%08lx\n", (unsigned long)purb->context); - printk("complete :0x%08lx\n\n", (unsigned long)purb->complete); -} - -static void __dump_in_desc(volatile struct USB_IN_Desc *in) -{ - printk("\nUSB_IN_Desc at 0x%08lx\n", (unsigned long)in); - printk(" sw_len : 0x%04x (%d)\n", in->sw_len, in->sw_len); - printk(" command : 0x%04x\n", in->command); - printk(" next : 0x%08lx\n", in->next); - printk(" buf : 0x%08lx\n", in->buf); - printk(" hw_len : 0x%04x (%d)\n", in->hw_len, in->hw_len); - printk(" status : 0x%04x\n\n", in->status); -} - -static void __dump_sb_desc(volatile struct USB_SB_Desc *sb) -{ - char tt = (sb->command & 0x30) >> 4; - char *tt_string; - - switch (tt) { - case 0: - tt_string = "zout"; - break; - case 1: - tt_string = "in"; - break; - case 2: - tt_string = "out"; - break; - case 3: - tt_string = "setup"; - break; - default: - tt_string = "unknown (weird)"; - } - - printk(" USB_SB_Desc at 0x%08lx ", (unsigned long)sb); - printk(" command:0x%04x (", sb->command); - printk("rem:%d ", (sb->command & 0x3f00) >> 8); - printk("full:%d ", (sb->command & 0x40) >> 6); - printk("tt:%d(%s) ", tt, tt_string); - printk("intr:%d ", (sb->command & 0x8) >> 3); - printk("eot:%d ", (sb->command & 0x2) >> 1); - printk("eol:%d)", sb->command & 0x1); - printk(" sw_len:0x%04x(%d)", sb->sw_len, sb->sw_len); - printk(" next:0x%08lx", sb->next); - printk(" buf:0x%08lx\n", sb->buf); -} - - -static void __dump_ep_desc(volatile struct USB_EP_Desc *ep) -{ - printk("USB_EP_Desc at 0x%08lx ", (unsigned long)ep); - printk(" command:0x%04x (", ep->command); - printk("ep_id:%d ", (ep->command & 0x1f00) >> 8); - printk("enable:%d ", (ep->command & 0x10) >> 4); - printk("intr:%d ", (ep->command & 0x8) >> 3); - printk("eof:%d ", (ep->command & 0x2) >> 1); - printk("eol:%d)", ep->command & 0x1); - printk(" hw_len:0x%04x(%d)", ep->hw_len, ep->hw_len); - printk(" next:0x%08lx", ep->next); - printk(" sub:0x%08lx\n", ep->sub); -} - -static inline void __dump_ep_list(int pipe_type) -{ - volatile struct USB_EP_Desc *ep; - volatile struct USB_EP_Desc *first_ep; - volatile struct USB_SB_Desc *sb; - - switch (pipe_type) - { - case PIPE_BULK: - first_ep = &TxBulkEPList[0]; - break; - case PIPE_CONTROL: - first_ep = &TxCtrlEPList[0]; - break; - case PIPE_INTERRUPT: - first_ep = &TxIntrEPList[0]; - break; - case PIPE_ISOCHRONOUS: - first_ep = &TxIsocEPList[0]; - break; - default: - warn("Cannot dump unknown traffic type"); - return; - } - ep = first_ep; - - printk("\n\nDumping EP list...\n\n"); - - do { - __dump_ep_desc(ep); - /* Cannot phys_to_virt on 0 as it turns into 80000000, which is != 0. */ - sb = ep->sub ? phys_to_virt(ep->sub) : 0; - while (sb) { - __dump_sb_desc(sb); - sb = sb->next ? phys_to_virt(sb->next) : 0; - } - ep = (volatile struct USB_EP_Desc *)(phys_to_virt(ep->next)); - - } while (ep != first_ep); -} - -static inline void __dump_ept_data(int epid) -{ - unsigned long flags; - __u32 r_usb_ept_data; - - if (epid < 0 || epid > 31) { - printk("Cannot dump ept data for invalid epid %d\n", epid); - return; - } - - local_irq_save(flags); - *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid); - nop(); - r_usb_ept_data = *R_USB_EPT_DATA; - local_irq_restore(flags); - - printk(" R_USB_EPT_DATA = 0x%x for epid %d :\n", r_usb_ept_data, epid); - if (r_usb_ept_data == 0) { - /* No need for more detailed printing. */ - return; - } - printk(" valid : %d\n", (r_usb_ept_data & 0x80000000) >> 31); - printk(" hold : %d\n", (r_usb_ept_data & 0x40000000) >> 30); - printk(" error_count_in : %d\n", (r_usb_ept_data & 0x30000000) >> 28); - printk(" t_in : %d\n", (r_usb_ept_data & 0x08000000) >> 27); - printk(" low_speed : %d\n", (r_usb_ept_data & 0x04000000) >> 26); - printk(" port : %d\n", (r_usb_ept_data & 0x03000000) >> 24); - printk(" error_code : %d\n", (r_usb_ept_data & 0x00c00000) >> 22); - printk(" t_out : %d\n", (r_usb_ept_data & 0x00200000) >> 21); - printk(" error_count_out : %d\n", (r_usb_ept_data & 0x00180000) >> 19); - printk(" max_len : %d\n", (r_usb_ept_data & 0x0003f800) >> 11); - printk(" ep : %d\n", (r_usb_ept_data & 0x00000780) >> 7); - printk(" dev : %d\n", (r_usb_ept_data & 0x0000003f)); -} - -static inline void __dump_ept_data_iso(int epid) -{ - unsigned long flags; - __u32 ept_data; - - if (epid < 0 || epid > 31) { - printk("Cannot dump ept data for invalid epid %d\n", epid); - return; - } - - local_irq_save(flags); - *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid); - nop(); - ept_data = *R_USB_EPT_DATA_ISO; - local_irq_restore(flags); - - printk(" R_USB_EPT_DATA = 0x%x for epid %d :\n", ept_data, epid); - if (ept_data == 0) { - /* No need for more detailed printing. */ - return; - } - printk(" valid : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, valid, - ept_data)); - printk(" port : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, port, - ept_data)); - printk(" error_code : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, error_code, - ept_data)); - printk(" max_len : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, max_len, - ept_data)); - printk(" ep : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, ep, - ept_data)); - printk(" dev : %d\n", IO_EXTRACT(R_USB_EPT_DATA_ISO, dev, - ept_data)); -} - -static inline void __dump_ept_data_list(void) -{ - int i; - - printk("Dumping the whole R_USB_EPT_DATA list\n"); - - for (i = 0; i < 32; i++) { - __dump_ept_data(i); - } -} - -static void debug_epid(int epid) { - int i; - - if(epid_isoc(epid)) { - __dump_ept_data_iso(epid); - } else { - __dump_ept_data(epid); - } - - printk("Bulk:\n"); - for(i = 0; i < 32; i++) { - if(IO_EXTRACT(USB_EP_command, epid, TxBulkEPList[i].command) == - epid) { - printk("%d: ", i); __dump_ep_desc(&(TxBulkEPList[i])); - } - } - - printk("Ctrl:\n"); - for(i = 0; i < 32; i++) { - if(IO_EXTRACT(USB_EP_command, epid, TxCtrlEPList[i].command) == - epid) { - printk("%d: ", i); __dump_ep_desc(&(TxCtrlEPList[i])); - } - } - - printk("Intr:\n"); - for(i = 0; i < MAX_INTR_INTERVAL; i++) { - if(IO_EXTRACT(USB_EP_command, epid, TxIntrEPList[i].command) == - epid) { - printk("%d: ", i); __dump_ep_desc(&(TxIntrEPList[i])); - } - } - - printk("Isoc:\n"); - for(i = 0; i < 32; i++) { - if(IO_EXTRACT(USB_EP_command, epid, TxIsocEPList[i].command) == - epid) { - printk("%d: ", i); __dump_ep_desc(&(TxIsocEPList[i])); - } - } - - __dump_ept_data_list(); - __dump_ep_list(PIPE_INTERRUPT); - printk("\n\n"); -} - - - -char* hcd_status_to_str(__u8 bUsbStatus) { - static char hcd_status_str[128]; - hcd_status_str[0] = '\0'; - if(bUsbStatus & IO_STATE(R_USB_STATUS, ourun, yes)) { - strcat(hcd_status_str, "ourun "); - } - if(bUsbStatus & IO_STATE(R_USB_STATUS, perror, yes)) { - strcat(hcd_status_str, "perror "); - } - if(bUsbStatus & IO_STATE(R_USB_STATUS, device_mode, yes)) { - strcat(hcd_status_str, "device_mode "); - } - if(bUsbStatus & IO_STATE(R_USB_STATUS, host_mode, yes)) { - strcat(hcd_status_str, "host_mode "); - } - if(bUsbStatus & IO_STATE(R_USB_STATUS, started, yes)) { - strcat(hcd_status_str, "started "); - } - if(bUsbStatus & IO_STATE(R_USB_STATUS, running, yes)) { - strcat(hcd_status_str, "running "); - } - return hcd_status_str; -} - - -char* sblist_to_str(struct USB_SB_Desc* sb_desc) { - static char sblist_to_str_buff[128]; - char tmp[32], tmp2[32]; - sblist_to_str_buff[0] = '\0'; - while(sb_desc != NULL) { - switch(IO_EXTRACT(USB_SB_command, tt, sb_desc->command)) { - case 0: sprintf(tmp, "zout"); break; - case 1: sprintf(tmp, "in"); break; - case 2: sprintf(tmp, "out"); break; - case 3: sprintf(tmp, "setup"); break; - } - sprintf(tmp2, "(%s %d)", tmp, sb_desc->sw_len); - strcat(sblist_to_str_buff, tmp2); - if(sb_desc->next != 0) { - sb_desc = phys_to_virt(sb_desc->next); - } else { - sb_desc = NULL; - } - } - return sblist_to_str_buff; -} - -char* port_status_to_str(__u16 wPortStatus) { - static char port_status_str[128]; - port_status_str[0] = '\0'; - if(wPortStatus & IO_STATE(R_USB_RH_PORT_STATUS_1, connected, yes)) { - strcat(port_status_str, "connected "); - } - if(wPortStatus & IO_STATE(R_USB_RH_PORT_STATUS_1, enabled, yes)) { - strcat(port_status_str, "enabled "); - } - if(wPortStatus & IO_STATE(R_USB_RH_PORT_STATUS_1, suspended, yes)) { - strcat(port_status_str, "suspended "); - } - if(wPortStatus & IO_STATE(R_USB_RH_PORT_STATUS_1, reset, yes)) { - strcat(port_status_str, "reset "); - } - if(wPortStatus & IO_STATE(R_USB_RH_PORT_STATUS_1, speed, full)) { - strcat(port_status_str, "full-speed "); - } else { - strcat(port_status_str, "low-speed "); - } - return port_status_str; -} - - -char* endpoint_to_str(struct usb_endpoint_descriptor *ed) { - static char endpoint_to_str_buff[128]; - char tmp[32]; - int epnum = ed->bEndpointAddress & 0x0F; - int dir = ed->bEndpointAddress & 0x80; - int type = ed->bmAttributes & 0x03; - endpoint_to_str_buff[0] = '\0'; - sprintf(endpoint_to_str_buff, "ep:%d ", epnum); - switch(type) { - case 0: - sprintf(tmp, " ctrl"); - break; - case 1: - sprintf(tmp, " isoc"); - break; - case 2: - sprintf(tmp, " bulk"); - break; - case 3: - sprintf(tmp, " intr"); - break; - } - strcat(endpoint_to_str_buff, tmp); - if(dir) { - sprintf(tmp, " in"); - } else { - sprintf(tmp, " out"); - } - strcat(endpoint_to_str_buff, tmp); - - return endpoint_to_str_buff; -} - -/* Debug helper functions for Transfer Controller */ -char* pipe_to_str(unsigned int pipe) { - static char pipe_to_str_buff[128]; - char tmp[64]; - sprintf(pipe_to_str_buff, "dir:%s", str_dir(pipe)); - sprintf(tmp, " type:%s", str_type(pipe)); - strcat(pipe_to_str_buff, tmp); - - sprintf(tmp, " dev:%d", usb_pipedevice(pipe)); - strcat(pipe_to_str_buff, tmp); - sprintf(tmp, " ep:%d", usb_pipeendpoint(pipe)); - strcat(pipe_to_str_buff, tmp); - return pipe_to_str_buff; -} - - -#define USB_DEBUG_DESC 1 - -#ifdef USB_DEBUG_DESC -#define dump_in_desc(x) __dump_in_desc(x) -#define dump_sb_desc(...) __dump_sb_desc(...) -#define dump_ep_desc(x) __dump_ep_desc(x) -#define dump_ept_data(x) __dump_ept_data(x) -#else -#define dump_in_desc(...) do {} while (0) -#define dump_sb_desc(...) do {} while (0) -#define dump_ep_desc(...) do {} while (0) -#endif - - -/* Uncomment this to enable massive function call trace - #define USB_DEBUG_TRACE */ - -#ifdef USB_DEBUG_TRACE -#define DBFENTER (printk(": Entering: %s\n", __FUNCTION__)) -#define DBFEXIT (printk(": Exiting: %s\n", __FUNCTION__)) -#else -#define DBFENTER do {} while (0) -#define DBFEXIT do {} while (0) -#endif - -#define CHECK_ALIGN(x) if (((__u32)(x)) & 0x00000003) \ -{panic("Alignment check (DWORD) failed at %s:%s:%d\n", __FILE__, __FUNCTION__, __LINE__);} - -/* Most helpful debugging aid */ -#define ASSERT(expr) ((void) ((expr) ? 0 : (err("assert failed at: %s %d",__FUNCTION__, __LINE__)))) - - -/***************************************************************************/ -/***************************************************************************/ -/* Forward declarations */ -/***************************************************************************/ -/***************************************************************************/ -void crisv10_hcd_epid_attn_irq(struct crisv10_irq_reg *reg); -void crisv10_hcd_port_status_irq(struct crisv10_irq_reg *reg); -void crisv10_hcd_ctl_status_irq(struct crisv10_irq_reg *reg); -void crisv10_hcd_isoc_eof_irq(struct crisv10_irq_reg *reg); - -void rh_port_status_change(__u16[]); -int rh_clear_port_feature(__u8, __u16); -int rh_set_port_feature(__u8, __u16); -static void rh_disable_port(unsigned int port); - -static void check_finished_bulk_tx_epids(struct usb_hcd *hcd, - int timer); - -static int tc_setup_epid(struct usb_host_endpoint *ep, struct urb *urb, - int mem_flags); -static void tc_free_epid(struct usb_host_endpoint *ep); -static int tc_allocate_epid(void); -static void tc_finish_urb(struct usb_hcd *hcd, struct urb *urb, int status); -static void tc_finish_urb_later(struct usb_hcd *hcd, struct urb *urb, - int status); - -static int urb_priv_create(struct usb_hcd *hcd, struct urb *urb, int epid, - int mem_flags); -static void urb_priv_free(struct usb_hcd *hcd, struct urb *urb); - -static int crisv10_usb_check_bandwidth(struct usb_device *dev,struct urb *urb); -static void crisv10_usb_claim_bandwidth( - struct usb_device *dev, struct urb *urb, int bustime, int isoc); -static void crisv10_usb_release_bandwidth( - struct usb_hcd *hcd, int isoc, int bandwidth); - -static inline struct urb *urb_list_first(int epid); -static inline void urb_list_add(struct urb *urb, int epid, - int mem_flags); -static inline urb_entry_t *urb_list_entry(struct urb *urb, int epid); -static inline void urb_list_del(struct urb *urb, int epid); -static inline void urb_list_move_last(struct urb *urb, int epid); -static inline struct urb *urb_list_next(struct urb *urb, int epid); - -int create_sb_for_urb(struct urb *urb, int mem_flags); -int init_intr_urb(struct urb *urb, int mem_flags); - -static inline void etrax_epid_set(__u8 index, __u32 data); -static inline void etrax_epid_clear_error(__u8 index); -static inline void etrax_epid_set_toggle(__u8 index, __u8 dirout, - __u8 toggle); -static inline __u8 etrax_epid_get_toggle(__u8 index, __u8 dirout); -static inline __u32 etrax_epid_get(__u8 index); - -/* We're accessing the same register position in Etrax so - when we do full access the internal difference doesn't matter */ -#define etrax_epid_iso_set(index, data) etrax_epid_set(index, data) -#define etrax_epid_iso_get(index) etrax_epid_get(index) - - -static void tc_dma_process_isoc_urb(struct urb *urb); -static void tc_dma_process_queue(int epid); -static void tc_dma_unlink_intr_urb(struct urb *urb); -static irqreturn_t tc_dma_tx_interrupt(int irq, void *vhc); -static irqreturn_t tc_dma_rx_interrupt(int irq, void *vhc); - -static void tc_bulk_start_timer_func(unsigned long dummy); -static void tc_bulk_eot_timer_func(unsigned long dummy); - - -/*************************************************************/ -/*************************************************************/ -/* Host Controler Driver block */ -/*************************************************************/ -/*************************************************************/ - -/* HCD operations */ -static irqreturn_t crisv10_hcd_top_irq(int irq, void*); -static int crisv10_hcd_reset(struct usb_hcd *); -static int crisv10_hcd_start(struct usb_hcd *); -static void crisv10_hcd_stop(struct usb_hcd *); -#ifdef CONFIG_PM -static int crisv10_hcd_suspend(struct device *, u32, u32); -static int crisv10_hcd_resume(struct device *, u32); -#endif /* CONFIG_PM */ -static int crisv10_hcd_get_frame(struct usb_hcd *); - -static int tc_urb_enqueue(struct usb_hcd *, struct urb *, gfp_t mem_flags); -static int tc_urb_dequeue(struct usb_hcd *, struct urb *, int); -static void tc_endpoint_disable(struct usb_hcd *, struct usb_host_endpoint *ep); - -static int rh_status_data_request(struct usb_hcd *, char *); -static int rh_control_request(struct usb_hcd *, u16, u16, u16, char*, u16); - -#ifdef CONFIG_PM -static int crisv10_hcd_hub_suspend(struct usb_hcd *); -static int crisv10_hcd_hub_resume(struct usb_hcd *); -#endif /* CONFIG_PM */ -#ifdef CONFIG_USB_OTG -static int crisv10_hcd_start_port_reset(struct usb_hcd *, unsigned); -#endif /* CONFIG_USB_OTG */ - -/* host controller driver interface */ -static const struct hc_driver crisv10_hc_driver = - { - .description = hc_name, - .product_desc = product_desc, - .hcd_priv_size = sizeof(struct crisv10_hcd), - - /* Attaching IRQ handler manualy in probe() */ - /* .irq = crisv10_hcd_irq, */ - - .flags = HCD_USB11, - - /* called to init HCD and root hub */ - .reset = crisv10_hcd_reset, - .start = crisv10_hcd_start, - - /* cleanly make HCD stop writing memory and doing I/O */ - .stop = crisv10_hcd_stop, - - /* return current frame number */ - .get_frame_number = crisv10_hcd_get_frame, - - - /* Manage i/o requests via the Transfer Controller */ - .urb_enqueue = tc_urb_enqueue, - .urb_dequeue = tc_urb_dequeue, - - /* hw synch, freeing endpoint resources that urb_dequeue can't */ - .endpoint_disable = tc_endpoint_disable, - - - /* Root Hub support */ - .hub_status_data = rh_status_data_request, - .hub_control = rh_control_request, -#ifdef CONFIG_PM - .hub_suspend = rh_suspend_request, - .hub_resume = rh_resume_request, -#endif /* CONFIG_PM */ -#ifdef CONFIG_USB_OTG - .start_port_reset = crisv10_hcd_start_port_reset, -#endif /* CONFIG_USB_OTG */ - }; - - -/* - * conversion between pointers to a hcd and the corresponding - * crisv10_hcd - */ - -static inline struct crisv10_hcd *hcd_to_crisv10_hcd(struct usb_hcd *hcd) -{ - return (struct crisv10_hcd *) hcd->hcd_priv; -} - -static inline struct usb_hcd *crisv10_hcd_to_hcd(struct crisv10_hcd *hcd) -{ - return container_of((void *) hcd, struct usb_hcd, hcd_priv); -} - -/* check if specified port is in use */ -static inline int port_in_use(unsigned int port) -{ - return ports & (1 << port); -} - -/* number of ports in use */ -static inline unsigned int num_ports(void) -{ - unsigned int i, num = 0; - for (i = 0; i < USB_ROOT_HUB_PORTS; i++) - if (port_in_use(i)) - num++; - return num; -} - -/* map hub port number to the port number used internally by the HC */ -static inline unsigned int map_port(unsigned int port) -{ - unsigned int i, num = 0; - for (i = 0; i < USB_ROOT_HUB_PORTS; i++) - if (port_in_use(i)) - if (++num == port) - return i; - return -1; -} - -/* size of descriptors in slab cache */ -#ifndef MAX -#define MAX(x, y) ((x) > (y) ? (x) : (y)) -#endif - - -/******************************************************************/ -/* Hardware Interrupt functions */ -/******************************************************************/ - -/* Fast interrupt handler for HC */ -static irqreturn_t crisv10_hcd_top_irq(int irq, void *vcd) -{ - struct usb_hcd *hcd = vcd; - struct crisv10_irq_reg reg; - __u32 irq_mask; - unsigned long flags; - - DBFENTER; - - ASSERT(hcd != NULL); - reg.hcd = hcd; - - /* Turn of other interrupts while handling these sensitive cases */ - local_irq_save(flags); - - /* Read out which interrupts that are flaged */ - irq_mask = *R_USB_IRQ_MASK_READ; - reg.r_usb_irq_mask_read = irq_mask; - - /* Reading R_USB_STATUS clears the ctl_status interrupt. Note that - R_USB_STATUS must be read before R_USB_EPID_ATTN since reading the latter - clears the ourun and perror fields of R_USB_STATUS. */ - reg.r_usb_status = *R_USB_STATUS; - - /* Reading R_USB_EPID_ATTN clears the iso_eof, bulk_eot and epid_attn - interrupts. */ - reg.r_usb_epid_attn = *R_USB_EPID_ATTN; - - /* Reading R_USB_RH_PORT_STATUS_1 and R_USB_RH_PORT_STATUS_2 clears the - port_status interrupt. */ - reg.r_usb_rh_port_status_1 = *R_USB_RH_PORT_STATUS_1; - reg.r_usb_rh_port_status_2 = *R_USB_RH_PORT_STATUS_2; - - /* Reading R_USB_FM_NUMBER clears the sof interrupt. */ - /* Note: the lower 11 bits contain the actual frame number, sent with each - sof. */ - reg.r_usb_fm_number = *R_USB_FM_NUMBER; - - /* Interrupts are handled in order of priority. */ - if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, port_status)) { - crisv10_hcd_port_status_irq(®); - } - if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, epid_attn)) { - crisv10_hcd_epid_attn_irq(®); - } - if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, ctl_status)) { - crisv10_hcd_ctl_status_irq(®); - } - if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, iso_eof)) { - crisv10_hcd_isoc_eof_irq(®); - } - if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, bulk_eot)) { - /* Update/restart the bulk start timer since obviously the channel is - running. */ - mod_timer(&bulk_start_timer, jiffies + BULK_START_TIMER_INTERVAL); - /* Update/restart the bulk eot timer since we just received an bulk eot - interrupt. */ - mod_timer(&bulk_eot_timer, jiffies + BULK_EOT_TIMER_INTERVAL); - - /* Check for finished bulk transfers on epids */ - check_finished_bulk_tx_epids(hcd, 0); - } - local_irq_restore(flags); - - DBFEXIT; - return IRQ_HANDLED; -} - - -void crisv10_hcd_epid_attn_irq(struct crisv10_irq_reg *reg) { - struct usb_hcd *hcd = reg->hcd; - struct crisv10_urb_priv *urb_priv; - int epid; - DBFENTER; - - for (epid = 0; epid < NBR_OF_EPIDS; epid++) { - if (test_bit(epid, (void *)®->r_usb_epid_attn)) { - struct urb *urb; - __u32 ept_data; - int error_code; - - if (epid == DUMMY_EPID || epid == INVALID_EPID) { - /* We definitely don't care about these ones. Besides, they are - always disabled, so any possible disabling caused by the - epid attention interrupt is irrelevant. */ - warn("Got epid_attn for INVALID_EPID or DUMMY_EPID (%d).", epid); - continue; - } - - if(!epid_inuse(epid)) { - irq_err("Epid attention on epid:%d that isn't in use\n", epid); - printk("R_USB_STATUS: 0x%x\n", reg->r_usb_status); - debug_epid(epid); - continue; - } - - /* Note that although there are separate R_USB_EPT_DATA and - R_USB_EPT_DATA_ISO registers, they are located at the same address and - are of the same size. In other words, this read should be ok for isoc - also. */ - ept_data = etrax_epid_get(epid); - error_code = IO_EXTRACT(R_USB_EPT_DATA, error_code, ept_data); - - /* Get the active URB for this epid. We blatantly assume - that only this URB could have caused the epid attention. */ - urb = activeUrbList[epid]; - if (urb == NULL) { - irq_err("Attention on epid:%d error:%d with no active URB.\n", - epid, error_code); - printk("R_USB_STATUS: 0x%x\n", reg->r_usb_status); - debug_epid(epid); - continue; - } - - urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; - ASSERT(urb_priv); - - /* Using IO_STATE_VALUE on R_USB_EPT_DATA should be ok for isoc also. */ - if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code, no_error)) { - - /* Isoc traffic doesn't have error_count_in/error_count_out. */ - if ((usb_pipetype(urb->pipe) != PIPE_ISOCHRONOUS) && - (IO_EXTRACT(R_USB_EPT_DATA, error_count_in, ept_data) == 3 || - IO_EXTRACT(R_USB_EPT_DATA, error_count_out, ept_data) == 3)) { - /* Check if URB allready is marked for late-finish, we can get - several 3rd error for Intr traffic when a device is unplugged */ - if(urb_priv->later_data == NULL) { - /* 3rd error. */ - irq_warn("3rd error for epid:%d (%s %s) URB:0x%x[%d]\n", epid, - str_dir(urb->pipe), str_type(urb->pipe), - (unsigned int)urb, urb_priv->urb_num); - - tc_finish_urb_later(hcd, urb, -EPROTO); - } - - } else if (reg->r_usb_status & IO_MASK(R_USB_STATUS, perror)) { - irq_warn("Perror for epid:%d\n", epid); - printk("FM_NUMBER: %d\n", reg->r_usb_fm_number & 0x7ff); - printk("R_USB_STATUS: 0x%x\n", reg->r_usb_status); - __dump_urb(urb); - debug_epid(epid); - - if (!(ept_data & IO_MASK(R_USB_EPT_DATA, valid))) { - /* invalid ep_id */ - panic("Perror because of invalid epid." - " Deconfigured too early?"); - } else { - /* past eof1, near eof, zout transfer, setup transfer */ - /* Dump the urb and the relevant EP descriptor. */ - panic("Something wrong with DMA descriptor contents." - " Too much traffic inserted?"); - } - } else if (reg->r_usb_status & IO_MASK(R_USB_STATUS, ourun)) { - /* buffer ourun */ - printk("FM_NUMBER: %d\n", reg->r_usb_fm_number & 0x7ff); - printk("R_USB_STATUS: 0x%x\n", reg->r_usb_status); - __dump_urb(urb); - debug_epid(epid); - - panic("Buffer overrun/underrun for epid:%d. DMA too busy?", epid); - } else { - irq_warn("Attention on epid:%d (%s %s) with no error code\n", epid, - str_dir(urb->pipe), str_type(urb->pipe)); - printk("R_USB_STATUS: 0x%x\n", reg->r_usb_status); - __dump_urb(urb); - debug_epid(epid); - } - - } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code, - stall)) { - /* Not really a protocol error, just says that the endpoint gave - a stall response. Note that error_code cannot be stall for isoc. */ - if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) { - panic("Isoc traffic cannot stall"); - } - - tc_dbg("Stall for epid:%d (%s %s) URB:0x%x\n", epid, - str_dir(urb->pipe), str_type(urb->pipe), (unsigned int)urb); - tc_finish_urb(hcd, urb, -EPIPE); - - } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code, - bus_error)) { - /* Two devices responded to a transaction request. Must be resolved - by software. FIXME: Reset ports? */ - panic("Bus error for epid %d." - " Two devices responded to transaction request\n", - epid); - - } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code, - buffer_error)) { - /* DMA overrun or underrun. */ - irq_warn("Buffer overrun/underrun for epid:%d (%s %s)\n", epid, - str_dir(urb->pipe), str_type(urb->pipe)); - - /* It seems that error_code = buffer_error in - R_USB_EPT_DATA/R_USB_EPT_DATA_ISO and ourun = yes in R_USB_STATUS - are the same error. */ - tc_finish_urb(hcd, urb, -EPROTO); - } else { - irq_warn("Unknown attention on epid:%d (%s %s)\n", epid, - str_dir(urb->pipe), str_type(urb->pipe)); - dump_ept_data(epid); - } - } - } - DBFEXIT; -} - -void crisv10_hcd_port_status_irq(struct crisv10_irq_reg *reg) -{ - __u16 port_reg[USB_ROOT_HUB_PORTS]; - DBFENTER; - port_reg[0] = reg->r_usb_rh_port_status_1; - port_reg[1] = reg->r_usb_rh_port_status_2; - rh_port_status_change(port_reg); - DBFEXIT; -} - -void crisv10_hcd_isoc_eof_irq(struct crisv10_irq_reg *reg) -{ - int epid; - struct urb *urb; - struct crisv10_urb_priv *urb_priv; - - DBFENTER; - - for (epid = 0; epid < NBR_OF_EPIDS - 1; epid++) { - - /* Only check epids that are in use, is valid and has SB list */ - if (!epid_inuse(epid) || epid == INVALID_EPID || - TxIsocEPList[epid].sub == 0 || epid == DUMMY_EPID) { - /* Nothing here to see. */ - continue; - } - ASSERT(epid_isoc(epid)); - - /* Get the active URB for this epid (if any). */ - urb = activeUrbList[epid]; - if (urb == 0) { - isoc_warn("Ignoring NULL urb for epid:%d\n", epid); - continue; - } - if(!epid_out_traffic(epid)) { - /* Sanity check. */ - ASSERT(usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS); - - urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; - ASSERT(urb_priv); - - if (urb_priv->urb_state == NOT_STARTED) { - /* If ASAP is not set and urb->start_frame is the current frame, - start the transfer. */ - if (!(urb->transfer_flags & URB_ISO_ASAP) && - (urb->start_frame == (*R_USB_FM_NUMBER & 0x7ff))) { - /* EP should not be enabled if we're waiting for start_frame */ - ASSERT((TxIsocEPList[epid].command & - IO_STATE(USB_EP_command, enable, yes)) == 0); - - isoc_warn("Enabling isoc IN EP descr for epid %d\n", epid); - TxIsocEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes); - - /* This urb is now active. */ - urb_priv->urb_state = STARTED; - continue; - } - } - } - } - - DBFEXIT; -} - -void crisv10_hcd_ctl_status_irq(struct crisv10_irq_reg *reg) -{ - struct crisv10_hcd* crisv10_hcd = hcd_to_crisv10_hcd(reg->hcd); - - DBFENTER; - ASSERT(crisv10_hcd); - -/* irq_dbg("ctr_status_irq, controller status: %s\n", - hcd_status_to_str(reg->r_usb_status));*/ - - /* FIXME: What should we do if we get ourun or perror? Dump the EP and SB - list for the corresponding epid? */ - if (reg->r_usb_status & IO_MASK(R_USB_STATUS, ourun)) { - panic("USB controller got ourun."); - } - if (reg->r_usb_status & IO_MASK(R_USB_STATUS, perror)) { - - /* Before, etrax_usb_do_intr_recover was called on this epid if it was - an interrupt pipe. I don't see how re-enabling all EP descriptors - will help if there was a programming error. */ - panic("USB controller got perror."); - } - - /* Keep track of USB Controller, if it's running or not */ - if(reg->r_usb_status & IO_STATE(R_USB_STATUS, running, yes)) { - crisv10_hcd->running = 1; - } else { - crisv10_hcd->running = 0; - } - - if (reg->r_usb_status & IO_MASK(R_USB_STATUS, device_mode)) { - /* We should never operate in device mode. */ - panic("USB controller in device mode."); - } - - /* Set the flag to avoid getting "Unlink after no-IRQ? Controller is probably - using the wrong IRQ" from hcd_unlink_urb() in drivers/usb/core/hcd.c */ - set_bit(HCD_FLAG_SAW_IRQ, ®->hcd->flags); - - DBFEXIT; -} - - -/******************************************************************/ -/* Host Controller interface functions */ -/******************************************************************/ - -static inline void crisv10_ready_wait(void) { - volatile int timeout = 10000; - /* Check the busy bit of USB controller in Etrax */ - while((*R_USB_COMMAND & IO_MASK(R_USB_COMMAND, busy)) && - (timeout-- > 0)); - if(timeout == 0) { - warn("Timeout while waiting for USB controller to be idle\n"); - } -} - -/* reset host controller */ -static int crisv10_hcd_reset(struct usb_hcd *hcd) -{ - DBFENTER; - hcd_dbg(hcd, "reset\n"); - - - /* Reset the USB interface. */ - /* - *R_USB_COMMAND = - IO_STATE(R_USB_COMMAND, port_sel, nop) | - IO_STATE(R_USB_COMMAND, port_cmd, reset) | - IO_STATE(R_USB_COMMAND, ctrl_cmd, reset); - nop(); - */ - DBFEXIT; - return 0; -} - -/* start host controller */ -static int crisv10_hcd_start(struct usb_hcd *hcd) -{ - DBFENTER; - hcd_dbg(hcd, "start\n"); - - crisv10_ready_wait(); - - /* Start processing of USB traffic. */ - *R_USB_COMMAND = - IO_STATE(R_USB_COMMAND, port_sel, nop) | - IO_STATE(R_USB_COMMAND, port_cmd, reset) | - IO_STATE(R_USB_COMMAND, ctrl_cmd, host_run); - - nop(); - - hcd->state = HC_STATE_RUNNING; - - DBFEXIT; - return 0; -} - -/* stop host controller */ -static void crisv10_hcd_stop(struct usb_hcd *hcd) -{ - DBFENTER; - hcd_dbg(hcd, "stop\n"); - crisv10_hcd_reset(hcd); - DBFEXIT; -} - -/* return the current frame number */ -static int crisv10_hcd_get_frame(struct usb_hcd *hcd) -{ - DBFENTER; - DBFEXIT; - return (*R_USB_FM_NUMBER & 0x7ff); -} - -#ifdef CONFIG_USB_OTG - -static int crisv10_hcd_start_port_reset(struct usb_hcd *hcd, unsigned port) -{ - return 0; /* no-op for now */ -} - -#endif /* CONFIG_USB_OTG */ - - -/******************************************************************/ -/* Root Hub functions */ -/******************************************************************/ - -/* root hub status */ -static const struct usb_hub_status rh_hub_status = - { - .wHubStatus = 0, - .wHubChange = 0, - }; - -/* root hub descriptor */ -static const u8 rh_hub_descr[] = - { - 0x09, /* bDescLength */ - 0x29, /* bDescriptorType */ - USB_ROOT_HUB_PORTS, /* bNbrPorts */ - 0x00, /* wHubCharacteristics */ - 0x00, - 0x01, /* bPwrOn2pwrGood */ - 0x00, /* bHubContrCurrent */ - 0x00, /* DeviceRemovable */ - 0xff /* PortPwrCtrlMask */ - }; - -/* Actual holder of root hub status*/ -struct crisv10_rh rh; - -/* Initialize root hub data structures (called from dvdrv_hcd_probe()) */ -int rh_init(void) { - int i; - /* Reset port status flags */ - for (i = 0; i < USB_ROOT_HUB_PORTS; i++) { - rh.wPortChange[i] = 0; - rh.wPortStatusPrev[i] = 0; - } - return 0; -} - -#define RH_FEAT_MASK ((1<<USB_PORT_FEAT_CONNECTION)|\ - (1<<USB_PORT_FEAT_ENABLE)|\ - (1<<USB_PORT_FEAT_SUSPEND)|\ - (1<<USB_PORT_FEAT_RESET)) - -/* Handle port status change interrupt (called from bottom part interrupt) */ -void rh_port_status_change(__u16 port_reg[]) { - int i; - __u16 wChange; - - for(i = 0; i < USB_ROOT_HUB_PORTS; i++) { - /* Xor out changes since last read, masked for important flags */ - wChange = (port_reg[i] & RH_FEAT_MASK) ^ rh.wPortStatusPrev[i]; - /* Or changes together with (if any) saved changes */ - rh.wPortChange[i] |= wChange; - /* Save new status */ - rh.wPortStatusPrev[i] = port_reg[i]; - - if(wChange) { - rh_dbg("Interrupt port_status change port%d: %s Current-status:%s\n", i+1, - port_status_to_str(wChange), - port_status_to_str(port_reg[i])); - } - } -} - -/* Construct port status change bitmap for the root hub */ -static int rh_status_data_request(struct usb_hcd *hcd, char *buf) -{ - struct crisv10_hcd* crisv10_hcd = hcd_to_crisv10_hcd(hcd); - unsigned int i; - - DBFENTER; - /* - * corresponds to hub status change EP (USB 2.0 spec section 11.13.4) - * return bitmap indicating ports with status change - */ - *buf = 0; - spin_lock(&crisv10_hcd->lock); - for (i = 1; i <= crisv10_hcd->num_ports; i++) { - if (rh.wPortChange[map_port(i)]) { - *buf |= (1 << i); - rh_dbg("rh_status_data_request, change on port %d: %s Current Status: %s\n", i, - port_status_to_str(rh.wPortChange[map_port(i)]), - port_status_to_str(rh.wPortStatusPrev[map_port(i)])); - } - } - spin_unlock(&crisv10_hcd->lock); - DBFEXIT; - return *buf == 0 ? 0 : 1; -} - -/* Handle a control request for the root hub (called from hcd_driver) */ -static int rh_control_request(struct usb_hcd *hcd, - u16 typeReq, - u16 wValue, - u16 wIndex, - char *buf, - u16 wLength) { - - struct crisv10_hcd *crisv10_hcd = hcd_to_crisv10_hcd(hcd); - int retval = 0; - int len; - DBFENTER; - - switch (typeReq) { - case GetHubDescriptor: - rh_dbg("GetHubDescriptor\n"); - len = min_t(unsigned int, sizeof rh_hub_descr, wLength); - memcpy(buf, rh_hub_descr, len); - buf[2] = crisv10_hcd->num_ports; - break; - case GetHubStatus: - rh_dbg("GetHubStatus\n"); - len = min_t(unsigned int, sizeof rh_hub_status, wLength); - memcpy(buf, &rh_hub_status, len); - break; - case GetPortStatus: - if (!wIndex || wIndex > crisv10_hcd->num_ports) - goto error; - rh_dbg("GetportStatus, port:%d change:%s status:%s\n", wIndex, - port_status_to_str(rh.wPortChange[map_port(wIndex)]), - port_status_to_str(rh.wPortStatusPrev[map_port(wIndex)])); - *(u16 *) buf = cpu_to_le16(rh.wPortStatusPrev[map_port(wIndex)]); - *(u16 *) (buf + 2) = cpu_to_le16(rh.wPortChange[map_port(wIndex)]); - break; - case SetHubFeature: - rh_dbg("SetHubFeature\n"); - case ClearHubFeature: - rh_dbg("ClearHubFeature\n"); - switch (wValue) { - case C_HUB_OVER_CURRENT: - case C_HUB_LOCAL_POWER: - rh_warn("Not implemented hub request:%d \n", typeReq); - /* not implemented */ - break; - default: - goto error; - } - break; - case SetPortFeature: - if (!wIndex || wIndex > crisv10_hcd->num_ports) - goto error; - if(rh_set_port_feature(map_port(wIndex), wValue)) - goto error; - break; - case ClearPortFeature: - if (!wIndex || wIndex > crisv10_hcd->num_ports) - goto error; - if(rh_clear_port_feature(map_port(wIndex), wValue)) - goto error; - break; - default: - rh_warn("Unknown hub request: %d\n", typeReq); - error: - retval = -EPIPE; - } - DBFEXIT; - return retval; -} - -int rh_set_port_feature(__u8 bPort, __u16 wFeature) { - __u8 bUsbCommand = 0; - __u8 reset_cnt; - switch(wFeature) { - case USB_PORT_FEAT_RESET: - rh_dbg("SetPortFeature: reset\n"); - - if (rh.wPortStatusPrev[bPort] & - IO_STATE(R_USB_RH_PORT_STATUS_1, enabled, yes)) - { - __u8 restart_controller = 0; - - if ( (rh.wPortStatusPrev[0] & - IO_STATE(R_USB_RH_PORT_STATUS_1, enabled, yes)) && - (rh.wPortStatusPrev[1] & - IO_STATE(R_USB_RH_PORT_STATUS_2, enabled, yes)) ) - { - /* Both ports is enabled. The USB controller will not change state. */ - restart_controller = 0; - } - else - { - /* Only ports is enabled. The USB controller will change state and - must be restarted. */ - restart_controller = 1; - } - /* - In ETRAX 100LX it's not possible to reset an enabled root hub port. - The workaround is to disable and enable the port before resetting it. - Disabling the port can, if both ports are disabled at once, cause the - USB controller to change state to HOST_MODE state. - The USB controller state transition causes a lot of unwanted - interrupts that must be avoided. - Disabling the USB controller status and port status interrupts before - disabling/resetting the port stops these interrupts. - - These actions are performed: - 1. Disable USB controller status and port status interrupts. - 2. Disable the port - 3. Wait for the port to be disabled. - 4. Enable the port. - 5. Wait for the port to be enabled. - 6. Reset the port. - 7. Wait for for the reset to end. - 8. Wait for the USB controller entering started state. - 9. Order the USB controller to running state. - 10. Wait for the USB controller reaching running state. - 11. Clear all interrupts generated during the disable/enable/reset - procedure. - 12. Enable the USB controller status and port status interrupts. - */ - - /* 1. Disable USB controller status and USB port status interrupts. */ - *R_USB_IRQ_MASK_CLR = IO_STATE(R_USB_IRQ_MASK_CLR, ctl_status, clr); - __asm__ __volatile__ (" nop"); - *R_USB_IRQ_MASK_CLR = IO_STATE(R_USB_IRQ_MASK_CLR, port_status, clr); - __asm__ __volatile__ (" nop"); - - { - - /* Since an root hub port reset shall be 50 ms and the ETRAX 100LX - root hub port reset is 10 ms we must perform 5 port resets to - achieve a proper root hub port reset. */ - for (reset_cnt = 0; reset_cnt < 5; reset_cnt ++) - { - rh_dbg("Disable Port %d\n", bPort + 1); - - /* 2. Disable the port*/ - if (bPort == 0) - { - *R_USB_PORT1_DISABLE = IO_STATE(R_USB_PORT1_DISABLE, disable, yes); - } - else - { - *R_USB_PORT2_DISABLE = IO_STATE(R_USB_PORT2_DISABLE, disable, yes); - } - - /* 3. Wait for the port to be disabled. */ - while ( (bPort == 0) ? - *R_USB_RH_PORT_STATUS_1 & - IO_STATE(R_USB_RH_PORT_STATUS_1, enabled, yes) : - *R_USB_RH_PORT_STATUS_2 & - IO_STATE(R_USB_RH_PORT_STATUS_2, enabled, yes) ) {} - - rh_dbg("Port %d is disabled. Enable it!\n", bPort + 1); - - /* 4. Enable the port. */ - if (bPort == 0) - { - *R_USB_PORT1_DISABLE = IO_STATE(R_USB_PORT1_DISABLE, disable, no); - } - else - { - *R_USB_PORT2_DISABLE = IO_STATE(R_USB_PORT2_DISABLE, disable, no); - } - - /* 5. Wait for the port to be enabled again. */ - while (!( (bPort == 0) ? - *R_USB_RH_PORT_STATUS_1 & - IO_STATE(R_USB_RH_PORT_STATUS_1, connected, yes) : - *R_USB_RH_PORT_STATUS_2 & - IO_STATE(R_USB_RH_PORT_STATUS_2, connected, yes) ) ) {} - - rh_dbg("Port %d is enabled.\n", bPort + 1); - - /* 6. Reset the port */ - crisv10_ready_wait(); - *R_USB_COMMAND = - ( (bPort == 0) ? - IO_STATE(R_USB_COMMAND, port_sel, port1): - IO_STATE(R_USB_COMMAND, port_sel, port2) ) | - IO_STATE(R_USB_COMMAND, port_cmd, reset) | - IO_STATE(R_USB_COMMAND, busy, no) | - IO_STATE(R_USB_COMMAND, ctrl_cmd, nop); - rh_dbg("Port %d is resetting.\n", bPort + 1); - - /* 7. The USB specification says that we should wait for at least - 10ms for device recover */ - udelay(10500); /* 10,5ms blocking wait */ - - crisv10_ready_wait(); - } - } - - - /* Check if the USB controller needs to be restarted. */ - if (restart_controller) - { - /* 8. Wait for the USB controller entering started state. */ - while (!(*R_USB_STATUS & IO_STATE(R_USB_STATUS, started, yes))) {} - - /* 9. Order the USB controller to running state. */ - crisv10_ready_wait(); - *R_USB_COMMAND = - IO_STATE(R_USB_COMMAND, port_sel, nop) | - IO_STATE(R_USB_COMMAND, port_cmd, reset) | - IO_STATE(R_USB_COMMAND, busy, no) | - IO_STATE(R_USB_COMMAND, ctrl_cmd, host_run); - - /* 10. Wait for the USB controller reaching running state. */ - while (!(*R_USB_STATUS & IO_STATE(R_USB_STATUS, running, yes))) {} - } - - /* 11. Clear any controller or port satus interrupts before enabling - the interrupts. */ - { - u16 dummy; - - /* Clear the port status interrupt of the reset port. */ - if (bPort == 0) - { - rh_dbg("Clearing port 1 interrupts\n"); - dummy = *R_USB_RH_PORT_STATUS_1; - } - else - { - rh_dbg("Clearing port 2 interrupts\n"); - dummy = *R_USB_RH_PORT_STATUS_2; - } - - if (restart_controller) - { - /* The USB controller is restarted. Clear all interupts. */ - rh_dbg("Clearing all interrupts\n"); - dummy = *R_USB_STATUS; - dummy = *R_USB_RH_PORT_STATUS_1; - dummy = *R_USB_RH_PORT_STATUS_2; - } - } - - /* 12. Enable USB controller status and USB port status interrupts. */ - *R_USB_IRQ_MASK_SET = IO_STATE(R_USB_IRQ_MASK_SET, ctl_status, set); - __asm__ __volatile__ (" nop"); - *R_USB_IRQ_MASK_SET = IO_STATE(R_USB_IRQ_MASK_SET, port_status, set); - __asm__ __volatile__ (" nop"); - - } - else - { - - bUsbCommand |= IO_STATE(R_USB_COMMAND, port_cmd, reset); - /* Select which port via the port_sel field */ - bUsbCommand |= IO_FIELD(R_USB_COMMAND, port_sel, bPort+1); - - /* Make sure the controller isn't busy. */ - crisv10_ready_wait(); - /* Send out the actual command to the USB controller */ - *R_USB_COMMAND = bUsbCommand; - - /* Wait a while for controller to first become started after port reset */ - udelay(12000); /* 12ms blocking wait */ - - /* Make sure the controller isn't busy. */ - crisv10_ready_wait(); - - /* If all enabled ports were disabled the host controller goes down into - started mode, so we need to bring it back into the running state. - (This is safe even if it's already in the running state.) */ - *R_USB_COMMAND = - IO_STATE(R_USB_COMMAND, port_sel, nop) | - IO_STATE(R_USB_COMMAND, port_cmd, reset) | - IO_STATE(R_USB_COMMAND, ctrl_cmd, host_run); - } - - break; - case USB_PORT_FEAT_SUSPEND: - rh_dbg("SetPortFeature: suspend\n"); - bUsbCommand |= IO_STATE(R_USB_COMMAND, port_cmd, suspend); - goto set; - break; - case USB_PORT_FEAT_POWER: - rh_dbg("SetPortFeature: power\n"); - break; - case USB_PORT_FEAT_C_CONNECTION: - rh_dbg("SetPortFeature: c_connection\n"); - break; - case USB_PORT_FEAT_C_RESET: - rh_dbg("SetPortFeature: c_reset\n"); - break; - case USB_PORT_FEAT_C_OVER_CURRENT: - rh_dbg("SetPortFeature: c_over_current\n"); - break; - - set: - /* Select which port via the port_sel field */ - bUsbCommand |= IO_FIELD(R_USB_COMMAND, port_sel, bPort+1); - - /* Make sure the controller isn't busy. */ - crisv10_ready_wait(); - /* Send out the actual command to the USB controller */ - *R_USB_COMMAND = bUsbCommand; - break; - default: - rh_dbg("SetPortFeature: unknown feature\n"); - return -1; - } - return 0; -} - -int rh_clear_port_feature(__u8 bPort, __u16 wFeature) { - switch(wFeature) { - case USB_PORT_FEAT_ENABLE: - rh_dbg("ClearPortFeature: enable\n"); - rh_disable_port(bPort); - break; - case USB_PORT_FEAT_SUSPEND: - rh_dbg("ClearPortFeature: suspend\n"); - break; - case USB_PORT_FEAT_POWER: - rh_dbg("ClearPortFeature: power\n"); - break; - - case USB_PORT_FEAT_C_ENABLE: - rh_dbg("ClearPortFeature: c_enable\n"); - goto clear; - case USB_PORT_FEAT_C_SUSPEND: - rh_dbg("ClearPortFeature: c_suspend\n"); - goto clear; - case USB_PORT_FEAT_C_CONNECTION: - rh_dbg("ClearPortFeature: c_connection\n"); - goto clear; - case USB_PORT_FEAT_C_OVER_CURRENT: - rh_dbg("ClearPortFeature: c_over_current\n"); - goto clear; - case USB_PORT_FEAT_C_RESET: - rh_dbg("ClearPortFeature: c_reset\n"); - goto clear; - clear: - rh.wPortChange[bPort] &= ~(1 << (wFeature - 16)); - break; - default: - rh_dbg("ClearPortFeature: unknown feature\n"); - return -1; - } - return 0; -} - - -#ifdef CONFIG_PM -/* Handle a suspend request for the root hub (called from hcd_driver) */ -static int rh_suspend_request(struct usb_hcd *hcd) -{ - return 0; /* no-op for now */ -} - -/* Handle a resume request for the root hub (called from hcd_driver) */ -static int rh_resume_request(struct usb_hcd *hcd) -{ - return 0; /* no-op for now */ -} -#endif /* CONFIG_PM */ - - - -/* Wrapper function for workaround port disable registers in USB controller */ -static void rh_disable_port(unsigned int port) { - volatile int timeout = 10000; - volatile char* usb_portx_disable; - switch(port) { - case 0: - usb_portx_disable = R_USB_PORT1_DISABLE; - break; - case 1: - usb_portx_disable = R_USB_PORT2_DISABLE; - break; - default: - /* Invalid port index */ - return; - } - /* Set disable flag in special register */ - *usb_portx_disable = IO_STATE(R_USB_PORT1_DISABLE, disable, yes); - /* Wait until not enabled anymore */ - while((rh.wPortStatusPrev[port] & - IO_STATE(R_USB_RH_PORT_STATUS_1, enabled, yes)) && - (timeout-- > 0)); - if(timeout == 0) { - warn("Timeout while waiting for port %d to become disabled\n", port); - } - /* clear disable flag in special register */ - *usb_portx_disable = IO_STATE(R_USB_PORT1_DISABLE, disable, no); - rh_info("Physical port %d disabled\n", port+1); -} - - -/******************************************************************/ -/* Transfer Controller (TC) functions */ -/******************************************************************/ - -/* FIXME: Should RX_BUF_SIZE be a config option, or maybe we should adjust it - dynamically? - To adjust it dynamically we would have to get an interrupt when we reach - the end of the rx descriptor list, or when we get close to the end, and - then allocate more descriptors. */ -#define NBR_OF_RX_DESC 512 -#define RX_DESC_BUF_SIZE 1024 -#define RX_BUF_SIZE (NBR_OF_RX_DESC * RX_DESC_BUF_SIZE) - - -/* Local variables for Transfer Controller */ -/* --------------------------------------- */ - -/* This is a circular (double-linked) list of the active urbs for each epid. - The head is never removed, and new urbs are linked onto the list as - urb_entry_t elements. Don't reference urb_list directly; use the wrapper - functions instead (which includes spin_locks) */ -static struct list_head urb_list[NBR_OF_EPIDS]; - -/* Read about the need and usage of this lock in submit_ctrl_urb. */ -/* Lock for URB lists for each EPID */ -static spinlock_t urb_list_lock; - -/* Lock for EPID array register (R_USB_EPT_x) in Etrax */ -static spinlock_t etrax_epid_lock; - -/* Lock for dma8 sub0 handling */ -static spinlock_t etrax_dma8_sub0_lock; - -/* DMA IN cache bug. Align the DMA IN buffers to 32 bytes, i.e. a cache line. - Since RX_DESC_BUF_SIZE is 1024 is a multiple of 32, all rx buffers will be - cache aligned. */ -static volatile unsigned char RxBuf[RX_BUF_SIZE] __attribute__ ((aligned (32))); -static volatile struct USB_IN_Desc RxDescList[NBR_OF_RX_DESC] __attribute__ ((aligned (4))); - -/* Pointers into RxDescList. */ -static volatile struct USB_IN_Desc *myNextRxDesc; -static volatile struct USB_IN_Desc *myLastRxDesc; - -/* A zout transfer makes a memory access at the address of its buf pointer, - which means that setting this buf pointer to 0 will cause an access to the - flash. In addition to this, setting sw_len to 0 results in a 16/32 bytes - (depending on DMA burst size) transfer. - Instead, we set it to 1, and point it to this buffer. */ -static int zout_buffer[4] __attribute__ ((aligned (4))); - -/* Cache for allocating new EP and SB descriptors. */ -static struct kmem_cache *usb_desc_cache; - -/* Cache for the data allocated in the isoc descr top half. */ -static struct kmem_cache *isoc_compl_cache; - -/* Cache for the data allocated when delayed finishing of URBs */ -static struct kmem_cache *later_data_cache; - - -/* Counter to keep track of how many Isoc EP we have sat up. Used to enable - and disable iso_eof interrupt. We only need these interrupts when we have - Isoc data endpoints (consumes CPU cycles). - FIXME: This could be more fine granular, so this interrupt is only enabled - when we have a In Isoc URB not URB_ISO_ASAP flaged queued. */ -static int isoc_epid_counter; - -/* Protecting wrapper functions for R_USB_EPT_x */ -/* -------------------------------------------- */ -static inline void etrax_epid_set(__u8 index, __u32 data) { - unsigned long flags; - spin_lock_irqsave(&etrax_epid_lock, flags); - *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, index); - nop(); - *R_USB_EPT_DATA = data; - spin_unlock_irqrestore(&etrax_epid_lock, flags); -} - -static inline void etrax_epid_clear_error(__u8 index) { - unsigned long flags; - spin_lock_irqsave(&etrax_epid_lock, flags); - *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, index); - nop(); - *R_USB_EPT_DATA &= - ~(IO_MASK(R_USB_EPT_DATA, error_count_in) | - IO_MASK(R_USB_EPT_DATA, error_count_out) | - IO_MASK(R_USB_EPT_DATA, error_code)); - spin_unlock_irqrestore(&etrax_epid_lock, flags); -} - -static inline void etrax_epid_set_toggle(__u8 index, __u8 dirout, - __u8 toggle) { - unsigned long flags; - spin_lock_irqsave(&etrax_epid_lock, flags); - *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, index); - nop(); - if(dirout) { - *R_USB_EPT_DATA &= ~IO_MASK(R_USB_EPT_DATA, t_out); - *R_USB_EPT_DATA |= IO_FIELD(R_USB_EPT_DATA, t_out, toggle); - } else { - *R_USB_EPT_DATA &= ~IO_MASK(R_USB_EPT_DATA, t_in); - *R_USB_EPT_DATA |= IO_FIELD(R_USB_EPT_DATA, t_in, toggle); - } - spin_unlock_irqrestore(&etrax_epid_lock, flags); -} - -static inline __u8 etrax_epid_get_toggle(__u8 index, __u8 dirout) { - unsigned long flags; - __u8 toggle; - spin_lock_irqsave(&etrax_epid_lock, flags); - *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, index); - nop(); - if (dirout) { - toggle = IO_EXTRACT(R_USB_EPT_DATA, t_out, *R_USB_EPT_DATA); - } else { - toggle = IO_EXTRACT(R_USB_EPT_DATA, t_in, *R_USB_EPT_DATA); - } - spin_unlock_irqrestore(&etrax_epid_lock, flags); - return toggle; -} - - -static inline __u32 etrax_epid_get(__u8 index) { - unsigned long flags; - __u32 data; - spin_lock_irqsave(&etrax_epid_lock, flags); - *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, index); - nop(); - data = *R_USB_EPT_DATA; - spin_unlock_irqrestore(&etrax_epid_lock, flags); - return data; -} - - - - -/* Main functions for Transfer Controller */ -/* -------------------------------------- */ - -/* Init structs, memories and lists used by Transfer Controller */ -int tc_init(struct usb_hcd *hcd) { - int i; - /* Clear software state info for all epids */ - memset(epid_state, 0, sizeof(struct etrax_epid) * NBR_OF_EPIDS); - - /* Set Invalid and Dummy as being in use and disabled */ - epid_state[INVALID_EPID].inuse = 1; - epid_state[DUMMY_EPID].inuse = 1; - epid_state[INVALID_EPID].disabled = 1; - epid_state[DUMMY_EPID].disabled = 1; - - /* Clear counter for how many Isoc epids we have sat up */ - isoc_epid_counter = 0; - - /* Initialize the urb list by initiating a head for each list. - Also reset list hodling active URB for each epid */ - for (i = 0; i < NBR_OF_EPIDS; i++) { - INIT_LIST_HEAD(&urb_list[i]); - activeUrbList[i] = NULL; - } - - /* Init lock for URB lists */ - spin_lock_init(&urb_list_lock); - /* Init lock for Etrax R_USB_EPT register */ - spin_lock_init(&etrax_epid_lock); - /* Init lock for Etrax dma8 sub0 handling */ - spin_lock_init(&etrax_dma8_sub0_lock); - - /* We use kmem_cache_* to make sure that all DMA desc. are dword aligned */ - - /* Note that we specify sizeof(struct USB_EP_Desc) as the size, but also - allocate SB descriptors from this cache. This is ok since - sizeof(struct USB_EP_Desc) == sizeof(struct USB_SB_Desc). */ - usb_desc_cache = kmem_cache_create("usb_desc_cache", - sizeof(struct USB_EP_Desc), 0, - SLAB_HWCACHE_ALIGN, 0); - if(usb_desc_cache == NULL) { - return -ENOMEM; - } - - /* Create slab cache for speedy allocation of memory for isoc bottom-half - interrupt handling */ - isoc_compl_cache = - kmem_cache_create("isoc_compl_cache", - sizeof(struct crisv10_isoc_complete_data), - 0, SLAB_HWCACHE_ALIGN, 0); - if(isoc_compl_cache == NULL) { - return -ENOMEM; - } - - /* Create slab cache for speedy allocation of memory for later URB finish - struct */ - later_data_cache = - kmem_cache_create("later_data_cache", - sizeof(struct urb_later_data), - 0, SLAB_HWCACHE_ALIGN, 0); - if(later_data_cache == NULL) { - return -ENOMEM; - } - - - /* Initiate the bulk start timer. */ - init_timer(&bulk_start_timer); - bulk_start_timer.expires = jiffies + BULK_START_TIMER_INTERVAL; - bulk_start_timer.function = tc_bulk_start_timer_func; - add_timer(&bulk_start_timer); - - - /* Initiate the bulk eot timer. */ - init_timer(&bulk_eot_timer); - bulk_eot_timer.expires = jiffies + BULK_EOT_TIMER_INTERVAL; - bulk_eot_timer.function = tc_bulk_eot_timer_func; - bulk_eot_timer.data = (unsigned long)hcd; - add_timer(&bulk_eot_timer); - - return 0; -} - -/* Uninitialize all resources used by Transfer Controller */ -void tc_destroy(void) { - - /* Destroy all slab cache */ - kmem_cache_destroy(usb_desc_cache); - kmem_cache_destroy(isoc_compl_cache); - kmem_cache_destroy(later_data_cache); - - /* Remove timers */ - del_timer(&bulk_start_timer); - del_timer(&bulk_eot_timer); -} - -static void restart_dma8_sub0(void) { - unsigned long flags; - spin_lock_irqsave(&etrax_dma8_sub0_lock, flags); - /* Verify that the dma is not running */ - if ((*R_DMA_CH8_SUB0_CMD & IO_MASK(R_DMA_CH8_SUB0_CMD, cmd)) == 0) { - struct USB_EP_Desc *ep = (struct USB_EP_Desc *)phys_to_virt(*R_DMA_CH8_SUB0_EP); - while (DUMMY_EPID == IO_EXTRACT(USB_EP_command, epid, ep->command)) { - ep = (struct USB_EP_Desc *)phys_to_virt(ep->next); - } - /* Advance the DMA to the next EP descriptor that is not a DUMMY_EPID. */ - *R_DMA_CH8_SUB0_EP = virt_to_phys(ep); - /* Restart the DMA */ - *R_DMA_CH8_SUB0_CMD = IO_STATE(R_DMA_CH8_SUB0_CMD, cmd, start); - } - spin_unlock_irqrestore(&etrax_dma8_sub0_lock, flags); -} - -/* queue an URB with the transfer controller (called from hcd_driver) */ -static int tc_urb_enqueue(struct usb_hcd *hcd, - struct urb *urb, - gfp_t mem_flags) { - int epid; - int retval; - int bustime = 0; - int maxpacket; - unsigned long flags; - struct crisv10_urb_priv *urb_priv; - struct crisv10_hcd* crisv10_hcd = hcd_to_crisv10_hcd(hcd); - DBFENTER; - - if(!(crisv10_hcd->running)) { - /* The USB Controller is not running, probably because no device is - attached. No idea to enqueue URBs then */ - tc_warn("Rejected enqueueing of URB:0x%x because no dev attached\n", - (unsigned int)urb); - return -ENOENT; - } - - maxpacket = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)); - /* Special case check for In Isoc transfers. Specification states that each - In Isoc transfer consists of one packet and therefore it should fit into - the transfer-buffer of an URB. - We do the check here to be sure (an invalid scenario can be produced with - parameters to the usbtest suite) */ - if(usb_pipeisoc(urb->pipe) && usb_pipein(urb->pipe) && - (urb->transfer_buffer_length < maxpacket)) { - tc_err("Submit In Isoc URB with buffer length:%d to pipe with maxpacketlen: %d\n", urb->transfer_buffer_length, maxpacket); - return -EMSGSIZE; - } - - /* Check if there is a epid for URBs destination, if not this function - set up one. */ - epid = tc_setup_epid(urb->ep, urb, mem_flags); - if (epid < 0) { - tc_err("Failed setup epid:%d for URB:0x%x\n", epid, (unsigned int)urb); - DBFEXIT; - return -ENOMEM; - } - - if(urb == activeUrbList[epid]) { - tc_err("Resubmition of allready active URB:0x%x\n", (unsigned int)urb); - return -ENXIO; - } - - if(urb_list_entry(urb, epid)) { - tc_err("Resubmition of allready queued URB:0x%x\n", (unsigned int)urb); - return -ENXIO; - } - - /* If we actively have flaged endpoint as disabled then refuse submition */ - if(epid_state[epid].disabled) { - return -ENOENT; - } - - /* Allocate and init HC-private data for URB */ - if(urb_priv_create(hcd, urb, epid, mem_flags) != 0) { - DBFEXIT; - return -ENOMEM; - } - urb_priv = urb->hcpriv; - - /* Check if there is enough bandwidth for periodic transfer */ - if(usb_pipeint(urb->pipe) || usb_pipeisoc(urb->pipe)) { - /* only check (and later claim) if not already claimed */ - if (urb_priv->bandwidth == 0) { - bustime = crisv10_usb_check_bandwidth(urb->dev, urb); - if (bustime < 0) { - tc_err("Not enough periodic bandwidth\n"); - urb_priv_free(hcd, urb); - DBFEXIT; - return -ENOSPC; - } - } - } - - tc_dbg("Enqueue URB:0x%x[%d] epid:%d (%s) bufflen:%d\n", - (unsigned int)urb, urb_priv->urb_num, epid, - pipe_to_str(urb->pipe), urb->transfer_buffer_length); - - /* Create and link SBs required for this URB */ - retval = create_sb_for_urb(urb, mem_flags); - if(retval != 0) { - tc_err("Failed to create SBs for URB:0x%x[%d]\n", (unsigned int)urb, - urb_priv->urb_num); - urb_priv_free(hcd, urb); - DBFEXIT; - return retval; - } - - /* Init intr EP pool if this URB is a INTR transfer. This pool is later - used when inserting EPs in the TxIntrEPList. We do the alloc here - so we can't run out of memory later */ - if(usb_pipeint(urb->pipe)) { - retval = init_intr_urb(urb, mem_flags); - if(retval != 0) { - tc_warn("Failed to init Intr URB\n"); - urb_priv_free(hcd, urb); - DBFEXIT; - return retval; - } - } - - /* Disable other access when inserting USB */ - local_irq_save(flags); - - /* Claim bandwidth, if needed */ - if(bustime) { - crisv10_usb_claim_bandwidth(urb->dev, - urb, - bustime, - (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS)); - } - - /* Add URB to EP queue */ - urb_list_add(urb, epid, mem_flags); - - if(usb_pipeisoc(urb->pipe)) { - /* Special processing of Isoc URBs. */ - tc_dma_process_isoc_urb(urb); - } else { - /* Process EP queue for rest of the URB types (Bulk, Ctrl, Intr) */ - tc_dma_process_queue(epid); - } - - local_irq_restore(flags); - - DBFEXIT; - return 0; -} - -/* remove an URB from the transfer controller queues (called from hcd_driver)*/ -static int tc_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) { - struct crisv10_urb_priv *urb_priv; - unsigned long flags; - int epid; - - DBFENTER; - /* Disable interrupts here since a descriptor interrupt for the isoc epid - will modify the sb list. This could possibly be done more granular, but - urb_dequeue should not be used frequently anyway. - */ - local_irq_save(flags); - - urb->status = status; - urb_priv = urb->hcpriv; - - if (!urb_priv) { - /* This happens if a device driver calls unlink on an urb that - was never submitted (lazy driver) or if the urb was completed - while dequeue was being called. */ - tc_warn("Dequeing of not enqueued URB:0x%x\n", (unsigned int)urb); - local_irq_restore(flags); - return 0; - } - epid = urb_priv->epid; - - tc_warn("Dequeing %s URB:0x%x[%d] (%s %s epid:%d) status:%d %s\n", - (urb == activeUrbList[epid]) ? "active" : "queued", - (unsigned int)urb, urb_priv->urb_num, str_dir(urb->pipe), - str_type(urb->pipe), epid, urb->status, - (urb_priv->later_data) ? "later-sched" : ""); - - /* For Bulk, Ctrl and Intr are only one URB active at a time. So any URB - that isn't active can be dequeued by just removing it from the queue */ - if(usb_pipebulk(urb->pipe) || usb_pipecontrol(urb->pipe) || - usb_pipeint(urb->pipe)) { - - /* Check if URB haven't gone further than the queue */ - if(urb != activeUrbList[epid]) { - ASSERT(urb_priv->later_data == NULL); - tc_warn("Dequeing URB:0x%x[%d] (%s %s epid:%d) from queue" - " (not active)\n", (unsigned int)urb, urb_priv->urb_num, - str_dir(urb->pipe), str_type(urb->pipe), epid); - - /* Finish the URB with error status from USB core */ - tc_finish_urb(hcd, urb, urb->status); - local_irq_restore(flags); - return 0; - } - } - - /* Set URB status to Unlink for handling when interrupt comes. */ - urb_priv->urb_state = UNLINK; - - /* Differentiate dequeing of Bulk and Ctrl from Isoc and Intr */ - switch(usb_pipetype(urb->pipe)) { - case PIPE_BULK: - /* Check if EP still is enabled */ - if (TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) { - /* The EP was enabled, disable it. */ - TxBulkEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); - } - /* Kicking dummy list out of the party. */ - TxBulkEPList[epid].next = virt_to_phys(&TxBulkEPList[(epid + 1) % NBR_OF_EPIDS]); - break; - case PIPE_CONTROL: - /* Check if EP still is enabled */ - if (TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable)) { - /* The EP was enabled, disable it. */ - TxCtrlEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); - } - break; - case PIPE_ISOCHRONOUS: - /* Disabling, busy-wait and unlinking of Isoc SBs will be done in - finish_isoc_urb(). Because there might the case when URB is dequeued - but there are other valid URBs waiting */ - - /* Check if In Isoc EP still is enabled */ - if (TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable)) { - /* The EP was enabled, disable it. */ - TxIsocEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); - } - break; - case PIPE_INTERRUPT: - /* Special care is taken for interrupt URBs. EPs are unlinked in - tc_finish_urb */ - break; - default: - break; - } - - /* Asynchronous unlink, finish the URB later from scheduled or other - event (data finished, error) */ - tc_finish_urb_later(hcd, urb, urb->status); - - local_irq_restore(flags); - DBFEXIT; - return 0; -} - - -static void tc_sync_finish_epid(struct usb_hcd *hcd, int epid) { - volatile int timeout = 10000; - struct urb* urb; - struct crisv10_urb_priv* urb_priv; - unsigned long flags; - - volatile struct USB_EP_Desc *first_ep; /* First EP in the list. */ - volatile struct USB_EP_Desc *curr_ep; /* Current EP, the iterator. */ - volatile struct USB_EP_Desc *next_ep; /* The EP after current. */ - - int type = epid_state[epid].type; - - /* Setting this flag will cause enqueue() to return -ENOENT for new - submitions on this endpoint and finish_urb() wont process queue further */ - epid_state[epid].disabled = 1; - - switch(type) { - case PIPE_BULK: - /* Check if EP still is enabled */ - if (TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) { - /* The EP was enabled, disable it. */ - TxBulkEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); - tc_warn("sync_finish: Disabling EP for epid:%d\n", epid); - - /* Do busy-wait until DMA not using this EP descriptor anymore */ - while((*R_DMA_CH8_SUB0_EP == - virt_to_phys(&TxBulkEPList[epid])) && - (timeout-- > 0)); - if(timeout == 0) { - warn("Timeout while waiting for DMA-TX-Bulk to leave EP for" - " epid:%d\n", epid); - } - } - break; - - case PIPE_CONTROL: - /* Check if EP still is enabled */ - if (TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable)) { - /* The EP was enabled, disable it. */ - TxCtrlEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); - tc_warn("sync_finish: Disabling EP for epid:%d\n", epid); - - /* Do busy-wait until DMA not using this EP descriptor anymore */ - while((*R_DMA_CH8_SUB1_EP == - virt_to_phys(&TxCtrlEPList[epid])) && - (timeout-- > 0)); - if(timeout == 0) { - warn("Timeout while waiting for DMA-TX-Ctrl to leave EP for" - " epid:%d\n", epid); - } - } - break; - - case PIPE_INTERRUPT: - local_irq_save(flags); - /* Disable all Intr EPs belonging to epid */ - first_ep = &TxIntrEPList[0]; - curr_ep = first_ep; - do { - next_ep = (struct USB_EP_Desc *)phys_to_virt(curr_ep->next); - if (IO_EXTRACT(USB_EP_command, epid, next_ep->command) == epid) { - /* Disable EP */ - next_ep->command &= ~IO_MASK(USB_EP_command, enable); - } - curr_ep = phys_to_virt(curr_ep->next); - } while (curr_ep != first_ep); - - local_irq_restore(flags); - break; - - case PIPE_ISOCHRONOUS: - /* Check if EP still is enabled */ - if (TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable)) { - tc_warn("sync_finish: Disabling Isoc EP for epid:%d\n", epid); - /* The EP was enabled, disable it. */ - TxIsocEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); - - while((*R_DMA_CH8_SUB3_EP == virt_to_phys(&TxIsocEPList[epid])) && - (timeout-- > 0)); - if(timeout == 0) { - warn("Timeout while waiting for DMA-TX-Isoc to leave EP for" - " epid:%d\n", epid); - } - } - break; - } - - local_irq_save(flags); - - /* Finish if there is active URB for this endpoint */ - if(activeUrbList[epid] != NULL) { - urb = activeUrbList[epid]; - urb_priv = urb->hcpriv; - ASSERT(urb_priv); - tc_warn("Sync finish %s URB:0x%x[%d] (%s %s epid:%d) status:%d %s\n", - (urb == activeUrbList[epid]) ? "active" : "queued", - (unsigned int)urb, urb_priv->urb_num, str_dir(urb->pipe), - str_type(urb->pipe), epid, urb->status, - (urb_priv->later_data) ? "later-sched" : ""); - - tc_finish_urb(hcd, activeUrbList[epid], -ENOENT); - ASSERT(activeUrbList[epid] == NULL); - } - - /* Finish any queued URBs for this endpoint. There won't be any resubmitions - because epid_disabled causes enqueue() to fail for this endpoint */ - while((urb = urb_list_first(epid)) != NULL) { - urb_priv = urb->hcpriv; - ASSERT(urb_priv); - - tc_warn("Sync finish %s URB:0x%x[%d] (%s %s epid:%d) status:%d %s\n", - (urb == activeUrbList[epid]) ? "active" : "queued", - (unsigned int)urb, urb_priv->urb_num, str_dir(urb->pipe), - str_type(urb->pipe), epid, urb->status, - (urb_priv->later_data) ? "later-sched" : ""); - - tc_finish_urb(hcd, urb, -ENOENT); - } - epid_state[epid].disabled = 0; - local_irq_restore(flags); -} - -/* free resources associated with an endpoint (called from hcd_driver) */ -static void tc_endpoint_disable(struct usb_hcd *hcd, - struct usb_host_endpoint *ep) { - DBFENTER; - /* Only free epid if it has been allocated. We get two endpoint_disable - requests for ctrl endpoints so ignore the second one */ - if(ep->hcpriv != NULL) { - struct crisv10_ep_priv *ep_priv = ep->hcpriv; - int epid = ep_priv->epid; - tc_warn("endpoint_disable ep:0x%x ep-priv:0x%x (%s) (epid:%d freed)\n", - (unsigned int)ep, (unsigned int)ep->hcpriv, - endpoint_to_str(&(ep->desc)), epid); - - tc_sync_finish_epid(hcd, epid); - - ASSERT(activeUrbList[epid] == NULL); - ASSERT(list_empty(&urb_list[epid])); - - tc_free_epid(ep); - } else { - tc_dbg("endpoint_disable ep:0x%x ep-priv:0x%x (%s)\n", (unsigned int)ep, - (unsigned int)ep->hcpriv, endpoint_to_str(&(ep->desc))); - } - DBFEXIT; -} - -static void tc_finish_urb_later_proc(struct work_struct* work) { - unsigned long flags; - struct urb_later_data* uld; - - local_irq_save(flags); - uld = container_of(work, struct urb_later_data, dws.work); - if(uld->urb == NULL) { - late_dbg("Later finish of URB = NULL (allready finished)\n"); - } else { - struct crisv10_urb_priv* urb_priv = uld->urb->hcpriv; - ASSERT(urb_priv); - if(urb_priv->urb_num == uld->urb_num) { - late_dbg("Later finish of URB:0x%x[%d]\n", (unsigned int)(uld->urb), - urb_priv->urb_num); - if(uld->status != uld->urb->status) { - errno_dbg("Later-finish URB with status:%d, later-status:%d\n", - uld->urb->status, uld->status); - } - if(uld != urb_priv->later_data) { - panic("Scheduled uld not same as URBs uld\n"); - } - tc_finish_urb(uld->hcd, uld->urb, uld->status); - } else { - late_warn("Ignoring later finish of URB:0x%x[%d]" - ", urb_num doesn't match current URB:0x%x[%d]", - (unsigned int)(uld->urb), uld->urb_num, - (unsigned int)(uld->urb), urb_priv->urb_num); - } - } - local_irq_restore(flags); - kmem_cache_free(later_data_cache, uld); -} - -static void tc_finish_urb_later(struct usb_hcd *hcd, struct urb *urb, - int status) { - struct crisv10_urb_priv *urb_priv = urb->hcpriv; - struct urb_later_data* uld; - - ASSERT(urb_priv); - - if(urb_priv->later_data != NULL) { - /* Later-finish allready scheduled for this URB, just update status to - return when finishing later */ - errno_dbg("Later-finish schedule change URB status:%d with new" - " status:%d\n", urb_priv->later_data->status, status); - - urb_priv->later_data->status = status; - return; - } - - uld = kmem_cache_alloc(later_data_cache, GFP_ATOMIC); - ASSERT(uld); - - uld->hcd = hcd; - uld->urb = urb; - uld->urb_num = urb_priv->urb_num; - uld->status = status; - - INIT_DELAYED_WORK(&uld->dws, tc_finish_urb_later_proc); - urb_priv->later_data = uld; - - /* Schedule the finishing of the URB to happen later */ - schedule_delayed_work(&uld->dws, LATER_TIMER_DELAY); -} - -static void tc_finish_isoc_urb(struct usb_hcd *hcd, struct urb *urb, - int status); - -static void tc_finish_urb(struct usb_hcd *hcd, struct urb *urb, int status) { - struct crisv10_hcd* crisv10_hcd = hcd_to_crisv10_hcd(hcd); - struct crisv10_urb_priv *urb_priv = urb->hcpriv; - int epid; - char toggle; - int urb_num; - - DBFENTER; - ASSERT(urb_priv != NULL); - epid = urb_priv->epid; - urb_num = urb_priv->urb_num; - - if(urb != activeUrbList[epid]) { - if(urb_list_entry(urb, epid)) { - /* Remove this URB from the list. Only happens when URB are finished - before having been processed (dequeing) */ - urb_list_del(urb, epid); - } else { - tc_warn("Finishing of URB:0x%x[%d] neither active or in queue for" - " epid:%d\n", (unsigned int)urb, urb_num, epid); - } - } - - /* Cancel any pending later-finish of this URB */ - if(urb_priv->later_data) { - urb_priv->later_data->urb = NULL; - } - - /* For an IN pipe, we always set the actual length, regardless of whether - there was an error or not (which means the device driver can use the data - if it wants to). */ - if(usb_pipein(urb->pipe)) { - urb->actual_length = urb_priv->rx_offset; - } else { - /* Set actual_length for OUT urbs also; the USB mass storage driver seems - to want that. */ - if (status == 0 && urb->status == -EINPROGRESS) { - urb->actual_length = urb->transfer_buffer_length; - } else { - /* We wouldn't know of any partial writes if there was an error. */ - urb->actual_length = 0; - } - } - - - /* URB status mangling */ - if(urb->status == -EINPROGRESS) { - /* The USB core hasn't changed the status, let's set our finish status */ - urb->status = status; - - if ((status == 0) && (urb->transfer_flags & URB_SHORT_NOT_OK) && - usb_pipein(urb->pipe) && - (urb->actual_length != urb->transfer_buffer_length)) { - /* URB_SHORT_NOT_OK means that short reads (shorter than the endpoint's - max length) is to be treated as an error. */ - errno_dbg("Finishing URB:0x%x[%d] with SHORT_NOT_OK flag and short" - " data:%d\n", (unsigned int)urb, urb_num, - urb->actual_length); - urb->status = -EREMOTEIO; - } - - if(urb_priv->urb_state == UNLINK) { - /* URB has been requested to be unlinked asynchronously */ - urb->status = -ECONNRESET; - errno_dbg("Fixing unlink status of URB:0x%x[%d] to:%d\n", - (unsigned int)urb, urb_num, urb->status); - } - } else { - /* The USB Core wants to signal some error via the URB, pass it through */ - } - - /* use completely different finish function for Isoc URBs */ - if(usb_pipeisoc(urb->pipe)) { - tc_finish_isoc_urb(hcd, urb, status); - return; - } - - /* Do special unlinking of EPs for Intr traffic */ - if(usb_pipeint(urb->pipe)) { - tc_dma_unlink_intr_urb(urb); - } - - /* Release allocated bandwidth for periodic transfers */ - if(usb_pipeint(urb->pipe) || usb_pipeisoc(urb->pipe)) - crisv10_usb_release_bandwidth(hcd, - usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS, - urb_priv->bandwidth); - - /* This URB is active on EP */ - if(urb == activeUrbList[epid]) { - /* We need to fiddle with the toggle bits because the hardware doesn't do - it for us. */ - toggle = etrax_epid_get_toggle(epid, usb_pipeout(urb->pipe)); - usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), - usb_pipeout(urb->pipe), toggle); - - /* Checks for Ctrl and Bulk EPs */ - switch(usb_pipetype(urb->pipe)) { - case PIPE_BULK: - /* Check so Bulk EP realy is disabled before finishing active URB */ - ASSERT((TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) == - IO_STATE(USB_EP_command, enable, no)); - /* Disable sub-pointer for EP to avoid next tx_interrupt() to - process Bulk EP. */ - TxBulkEPList[epid].sub = 0; - /* No need to wait for the DMA before changing the next pointer. - The modulo NBR_OF_EPIDS isn't actually necessary, since we will never use - the last one (INVALID_EPID) for actual traffic. */ - TxBulkEPList[epid].next = - virt_to_phys(&TxBulkEPList[(epid + 1) % NBR_OF_EPIDS]); - break; - case PIPE_CONTROL: - /* Check so Ctrl EP realy is disabled before finishing active URB */ - ASSERT((TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable)) == - IO_STATE(USB_EP_command, enable, no)); - /* Disable sub-pointer for EP to avoid next tx_interrupt() to - process Ctrl EP. */ - TxCtrlEPList[epid].sub = 0; - break; - } - } - - /* Free HC-private URB data*/ - urb_priv_free(hcd, urb); - - if(urb->status) { - errno_dbg("finish_urb (URB:0x%x[%d] %s %s) (data:%d) status:%d\n", - (unsigned int)urb, urb_num, str_dir(urb->pipe), - str_type(urb->pipe), urb->actual_length, urb->status); - } else { - tc_dbg("finish_urb (URB:0x%x[%d] %s %s) (data:%d) status:%d\n", - (unsigned int)urb, urb_num, str_dir(urb->pipe), - str_type(urb->pipe), urb->actual_length, urb->status); - } - - /* If we just finished an active URB, clear active pointer. */ - if (urb == activeUrbList[epid]) { - /* Make URB not active on EP anymore */ - activeUrbList[epid] = NULL; - - if(urb->status == 0) { - /* URB finished sucessfully, process queue to see if there are any more - URBs waiting before we call completion function.*/ - if(crisv10_hcd->running) { - /* Only process queue if USB controller is running */ - tc_dma_process_queue(epid); - } else { - tc_warn("No processing of queue for epid:%d, USB Controller not" - " running\n", epid); - } - } - } - - /* Hand the URB from HCD to its USB device driver, using its completion - functions */ - usb_hcd_giveback_urb (hcd, urb, status); - - /* Check the queue once more if the URB returned with error, because we - didn't do it before the completion function because the specification - states that the queue should not restart until all it's unlinked - URBs have been fully retired, with the completion functions run */ - if(crisv10_hcd->running) { - /* Only process queue if USB controller is running */ - tc_dma_process_queue(epid); - } else { - tc_warn("No processing of queue for epid:%d, USB Controller not running\n", - epid); - } - - DBFEXIT; -} - -static void tc_finish_isoc_urb(struct usb_hcd *hcd, struct urb *urb, - int status) { - struct crisv10_urb_priv *urb_priv = urb->hcpriv; - int epid, i; - volatile int timeout = 10000; - int bandwidth = 0; - - ASSERT(urb_priv); - epid = urb_priv->epid; - - ASSERT(usb_pipeisoc(urb->pipe)); - - /* Set that all isoc packets have status and length set before - completing the urb. */ - for (i = urb_priv->isoc_packet_counter; i < urb->number_of_packets; i++){ - urb->iso_frame_desc[i].actual_length = 0; - urb->iso_frame_desc[i].status = -EPROTO; - } - - /* Check if the URB is currently active (done or error) */ - if(urb == activeUrbList[epid]) { - /* Check if there are another In Isoc URB queued for this epid */ - if (!list_empty(&urb_list[epid])&& !epid_state[epid].disabled) { - /* Move it from queue to active and mark it started so Isoc transfers - won't be interrupted. - All Isoc URBs data transfers are already added to DMA lists so we - don't have to insert anything in DMA lists here. */ - activeUrbList[epid] = urb_list_first(epid); - ((struct crisv10_urb_priv *)(activeUrbList[epid]->hcpriv))->urb_state = - STARTED; - urb_list_del(activeUrbList[epid], epid); - - if(urb->status) { - errno_dbg("finish_isoc_urb (URB:0x%x[%d] %s %s) (%d of %d packets)" - " status:%d, new waiting URB:0x%x[%d]\n", - (unsigned int)urb, urb_priv->urb_num, str_dir(urb->pipe), - str_type(urb->pipe), urb_priv->isoc_packet_counter, - urb->number_of_packets, urb->status, - (unsigned int)activeUrbList[epid], - ((struct crisv10_urb_priv *)(activeUrbList[epid]->hcpriv))->urb_num); - } - - } else { /* No other URB queued for this epid */ - if(urb->status) { - errno_dbg("finish_isoc_urb (URB:0x%x[%d] %s %s) (%d of %d packets)" - " status:%d, no new URB waiting\n", - (unsigned int)urb, urb_priv->urb_num, str_dir(urb->pipe), - str_type(urb->pipe), urb_priv->isoc_packet_counter, - urb->number_of_packets, urb->status); - } - - /* Check if EP is still enabled, then shut it down. */ - if (TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable)) { - isoc_dbg("Isoc EP enabled for epid:%d, disabling it\n", epid); - - /* Should only occur for In Isoc EPs where SB isn't consumed. */ - ASSERT(usb_pipein(urb->pipe)); - - /* Disable it and wait for it to stop */ - TxIsocEPList[epid].command &= ~IO_MASK(USB_EP_command, enable); - - /* Ah, the luxury of busy-wait. */ - while((*R_DMA_CH8_SUB3_EP == virt_to_phys(&TxIsocEPList[epid])) && - (timeout-- > 0)); - if(timeout == 0) { - warn("Timeout while waiting for DMA-TX-Isoc to leave EP for epid:%d\n", epid); - } - } - - /* Unlink SB to say that epid is finished. */ - TxIsocEPList[epid].sub = 0; - TxIsocEPList[epid].hw_len = 0; - - /* No URB active for EP anymore */ - activeUrbList[epid] = NULL; - } - } else { /* Finishing of not active URB (queued up with SBs thought) */ - isoc_warn("finish_isoc_urb (URB:0x%x %s) (%d of %d packets) status:%d," - " SB queued but not active\n", - (unsigned int)urb, str_dir(urb->pipe), - urb_priv->isoc_packet_counter, urb->number_of_packets, - urb->status); - if(usb_pipeout(urb->pipe)) { - /* Finishing of not yet active Out Isoc URB needs unlinking of SBs. */ - struct USB_SB_Desc *iter_sb, *prev_sb, *next_sb; - - iter_sb = TxIsocEPList[epid].sub ? - phys_to_virt(TxIsocEPList[epid].sub) : 0; - prev_sb = 0; - - /* SB that is linked before this URBs first SB */ - while (iter_sb && (iter_sb != urb_priv->first_sb)) { - prev_sb = iter_sb; - iter_sb = iter_sb->next ? phys_to_virt(iter_sb->next) : 0; - } - - if (iter_sb == 0) { - /* Unlink of the URB currently being transmitted. */ - prev_sb = 0; - iter_sb = TxIsocEPList[epid].sub ? phys_to_virt(TxIsocEPList[epid].sub) : 0; - } - - while (iter_sb && (iter_sb != urb_priv->last_sb)) { - iter_sb = iter_sb->next ? phys_to_virt(iter_sb->next) : 0; - } - - if (iter_sb) { - next_sb = iter_sb->next ? phys_to_virt(iter_sb->next) : 0; - } else { - /* This should only happen if the DMA has completed - processing the SB list for this EP while interrupts - are disabled. */ - isoc_dbg("Isoc urb not found, already sent?\n"); - next_sb = 0; - } - if (prev_sb) { - prev_sb->next = next_sb ? virt_to_phys(next_sb) : 0; - } else { - TxIsocEPList[epid].sub = next_sb ? virt_to_phys(next_sb) : 0; - } - } - } - - /* Free HC-private URB data*/ - bandwidth = urb_priv->bandwidth; - urb_priv_free(hcd, urb); - - crisv10_usb_release_bandwidth(hcd, usb_pipeisoc(urb->pipe), bandwidth); - - /* Hand the URB from HCD to its USB device driver, using its completion - functions */ - usb_hcd_giveback_urb (hcd, urb, status); -} - -static __u32 urb_num = 0; - -/* allocate and initialize URB private data */ -static int urb_priv_create(struct usb_hcd *hcd, struct urb *urb, int epid, - int mem_flags) { - struct crisv10_urb_priv *urb_priv; - - urb_priv = kmalloc(sizeof *urb_priv, mem_flags); - if (!urb_priv) - return -ENOMEM; - memset(urb_priv, 0, sizeof *urb_priv); - - urb_priv->epid = epid; - urb_priv->urb_state = NOT_STARTED; - - urb->hcpriv = urb_priv; - /* Assign URB a sequence number, and increment counter */ - urb_priv->urb_num = urb_num; - urb_num++; - urb_priv->bandwidth = 0; - return 0; -} - -/* free URB private data */ -static void urb_priv_free(struct usb_hcd *hcd, struct urb *urb) { - int i; - struct crisv10_urb_priv *urb_priv = urb->hcpriv; - ASSERT(urb_priv != 0); - - /* Check it has any SBs linked that needs to be freed*/ - if(urb_priv->first_sb != NULL) { - struct USB_SB_Desc *next_sb, *first_sb, *last_sb; - int i = 0; - first_sb = urb_priv->first_sb; - last_sb = urb_priv->last_sb; - ASSERT(last_sb); - while(first_sb != last_sb) { - next_sb = (struct USB_SB_Desc *)phys_to_virt(first_sb->next); - kmem_cache_free(usb_desc_cache, first_sb); - first_sb = next_sb; - i++; - } - kmem_cache_free(usb_desc_cache, last_sb); - i++; - } - - /* Check if it has any EPs in its Intr pool that also needs to be freed */ - if(urb_priv->intr_ep_pool_length > 0) { - for(i = 0; i < urb_priv->intr_ep_pool_length; i++) { - kfree(urb_priv->intr_ep_pool[i]); - } - /* - tc_dbg("Freed %d EPs from URB:0x%x EP pool\n", - urb_priv->intr_ep_pool_length, (unsigned int)urb); - */ - } - - kfree(urb_priv); - urb->hcpriv = NULL; -} - -static int ep_priv_create(struct usb_host_endpoint *ep, int mem_flags) { - struct crisv10_ep_priv *ep_priv; - - ep_priv = kmalloc(sizeof *ep_priv, mem_flags); - if (!ep_priv) - return -ENOMEM; - memset(ep_priv, 0, sizeof *ep_priv); - - ep->hcpriv = ep_priv; - return 0; -} - -static void ep_priv_free(struct usb_host_endpoint *ep) { - struct crisv10_ep_priv *ep_priv = ep->hcpriv; - ASSERT(ep_priv); - kfree(ep_priv); - ep->hcpriv = NULL; -} - -/* - * usb_check_bandwidth(): - * - * old_alloc is from host_controller->bandwidth_allocated in microseconds; - * bustime is from calc_bus_time(), but converted to microseconds. - * - * returns <bustime in us> if successful, - * or -ENOSPC if bandwidth request fails. - * - * FIXME: - * This initial implementation does not use Endpoint.bInterval - * in managing bandwidth allocation. - * It probably needs to be expanded to use Endpoint.bInterval. - * This can be done as a later enhancement (correction). - * - * This will also probably require some kind of - * frame allocation tracking...meaning, for example, - * that if multiple drivers request interrupts every 10 USB frames, - * they don't all have to be allocated at - * frame numbers N, N+10, N+20, etc. Some of them could be at - * N+11, N+21, N+31, etc., and others at - * N+12, N+22, N+32, etc. - * - * Similarly for isochronous transfers... - * - * Individual HCDs can schedule more directly ... this logic - * is not correct for high speed transfers. - */ -static int crisv10_usb_check_bandwidth( - struct usb_device *dev, - struct urb *urb) -{ - unsigned int pipe = urb->pipe; - long bustime; - int is_in = usb_pipein (pipe); - int is_iso = usb_pipeisoc (pipe); - int old_alloc = dev->bus->bandwidth_allocated; - int new_alloc; - - bustime = NS_TO_US (usb_calc_bus_time (dev->speed, is_in, is_iso, - usb_maxpacket (dev, pipe, !is_in))); - if (is_iso) - bustime /= urb->number_of_packets; - - new_alloc = old_alloc + (int) bustime; - if (new_alloc > FRAME_TIME_MAX_USECS_ALLOC) { - dev_dbg (&dev->dev, "usb_check_bandwidth FAILED: %d + %ld = %d usec\n", - old_alloc, bustime, new_alloc); - bustime = -ENOSPC; /* report error */ - } - - return bustime; -} - -/** - * usb_claim_bandwidth - records bandwidth for a periodic transfer - * @dev: source/target of request - * @urb: request (urb->dev == dev) - * @bustime: bandwidth consumed, in (average) microseconds per frame - * @isoc: true iff the request is isochronous - * - * HCDs are expected not to overcommit periodic bandwidth, and to record such - * reservations whenever endpoints are added to the periodic schedule. - * - * FIXME averaging per-frame is suboptimal. Better to sum over the HCD's - * entire periodic schedule ... 32 frames for OHCI, 1024 for UHCI, settable - * for EHCI (256/512/1024 frames, default 1024) and have the bus expose how - * large its periodic schedule is. - */ -static void crisv10_usb_claim_bandwidth( - struct usb_device *dev, - struct urb *urb, int bustime, int isoc) -{ - dev->bus->bandwidth_allocated += bustime; - if (isoc) - dev->bus->bandwidth_isoc_reqs++; - else - dev->bus->bandwidth_int_reqs++; - struct crisv10_urb_priv *urb_priv; - urb_priv = urb->hcpriv; - urb_priv->bandwidth = bustime; -} - -/** - * usb_release_bandwidth - reverses effect of usb_claim_bandwidth() - * @hcd: host controller - * @isoc: true iff the request is isochronous - * @bandwidth: bandwidth returned - * - * This records that previously allocated bandwidth has been released. - * Bandwidth is released when endpoints are removed from the host controller's - * periodic schedule. - */ -static void crisv10_usb_release_bandwidth( - struct usb_hcd *hcd, - int isoc, - int bandwidth) -{ - hcd_to_bus(hcd)->bandwidth_allocated -= bandwidth; - if (isoc) - hcd_to_bus(hcd)->bandwidth_isoc_reqs--; - else - hcd_to_bus(hcd)->bandwidth_int_reqs--; -} - - -/* EPID handling functions, managing EP-list in Etrax through wrappers */ -/* ------------------------------------------------------------------- */ - -/* Sets up a new EPID for an endpoint or returns existing if found */ -static int tc_setup_epid(struct usb_host_endpoint *ep, struct urb *urb, - int mem_flags) { - int epid; - char devnum, endpoint, out_traffic, slow; - int maxlen; - __u32 epid_data; - struct crisv10_ep_priv *ep_priv = ep->hcpriv; - - DBFENTER; - - /* Check if a valid epid already is setup for this endpoint */ - if(ep_priv != NULL) { - return ep_priv->epid; - } - - /* We must find and initiate a new epid for this urb. */ - epid = tc_allocate_epid(); - - if (epid == -1) { - /* Failed to allocate a new epid. */ - DBFEXIT; - return epid; - } - - /* We now have a new epid to use. Claim it. */ - epid_state[epid].inuse = 1; - - /* Init private data for new endpoint */ - if(ep_priv_create(ep, mem_flags) != 0) { - return -ENOMEM; - } - ep_priv = ep->hcpriv; - ep_priv->epid = epid; - - devnum = usb_pipedevice(urb->pipe); - endpoint = usb_pipeendpoint(urb->pipe); - slow = (urb->dev->speed == USB_SPEED_LOW); - maxlen = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)); - - if (usb_pipetype(urb->pipe) == PIPE_CONTROL) { - /* We want both IN and OUT control traffic to be put on the same - EP/SB list. */ - out_traffic = 1; - } else { - out_traffic = usb_pipeout(urb->pipe); - } - - if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) { - epid_data = IO_STATE(R_USB_EPT_DATA_ISO, valid, yes) | - /* FIXME: Change any to the actual port? */ - IO_STATE(R_USB_EPT_DATA_ISO, port, any) | - IO_FIELD(R_USB_EPT_DATA_ISO, max_len, maxlen) | - IO_FIELD(R_USB_EPT_DATA_ISO, ep, endpoint) | - IO_FIELD(R_USB_EPT_DATA_ISO, dev, devnum); - etrax_epid_iso_set(epid, epid_data); - } else { - epid_data = IO_STATE(R_USB_EPT_DATA, valid, yes) | - IO_FIELD(R_USB_EPT_DATA, low_speed, slow) | - /* FIXME: Change any to the actual port? */ - IO_STATE(R_USB_EPT_DATA, port, any) | - IO_FIELD(R_USB_EPT_DATA, max_len, maxlen) | - IO_FIELD(R_USB_EPT_DATA, ep, endpoint) | - IO_FIELD(R_USB_EPT_DATA, dev, devnum); - etrax_epid_set(epid, epid_data); - } - - epid_state[epid].out_traffic = out_traffic; - epid_state[epid].type = usb_pipetype(urb->pipe); - - tc_warn("Setting up ep:0x%x epid:%d (addr:%d endp:%d max_len:%d %s %s %s)\n", - (unsigned int)ep, epid, devnum, endpoint, maxlen, - str_type(urb->pipe), out_traffic ? "out" : "in", - slow ? "low" : "full"); - - /* Enable Isoc eof interrupt if we set up the first Isoc epid */ - if(usb_pipeisoc(urb->pipe)) { - isoc_epid_counter++; - if(isoc_epid_counter == 1) { - isoc_warn("Enabled Isoc eof interrupt\n"); - *R_USB_IRQ_MASK_SET = IO_STATE(R_USB_IRQ_MASK_SET, iso_eof, set); - } - } - - DBFEXIT; - return epid; -} - -static void tc_free_epid(struct usb_host_endpoint *ep) { - unsigned long flags; - struct crisv10_ep_priv *ep_priv = ep->hcpriv; - int epid; - volatile int timeout = 10000; - - DBFENTER; - - if (ep_priv == NULL) { - tc_warn("Trying to free unused epid on ep:0x%x\n", (unsigned int)ep); - DBFEXIT; - return; - } - - epid = ep_priv->epid; - - /* Disable Isoc eof interrupt if we free the last Isoc epid */ - if(epid_isoc(epid)) { - ASSERT(isoc_epid_counter > 0); - isoc_epid_counter--; - if(isoc_epid_counter == 0) { - *R_USB_IRQ_MASK_CLR = IO_STATE(R_USB_IRQ_MASK_CLR, iso_eof, clr); - isoc_warn("Disabled Isoc eof interrupt\n"); - } - } - - /* Take lock manualy instead of in epid_x_x wrappers, - because we need to be polling here */ - spin_lock_irqsave(&etrax_epid_lock, flags); - - *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid); - nop(); - while((*R_USB_EPT_DATA & IO_MASK(R_USB_EPT_DATA, hold)) && - (timeout-- > 0)); - if(timeout == 0) { - warn("Timeout while waiting for epid:%d to drop hold\n", epid); - } - /* This will, among other things, set the valid field to 0. */ - *R_USB_EPT_DATA = 0; - spin_unlock_irqrestore(&etrax_epid_lock, flags); - - /* Free resource in software state info list */ - epid_state[epid].inuse = 0; - - /* Free private endpoint data */ - ep_priv_free(ep); - - DBFEXIT; -} - -static int tc_allocate_epid(void) { - int i; - DBFENTER; - for (i = 0; i < NBR_OF_EPIDS; i++) { - if (!epid_inuse(i)) { - DBFEXIT; - return i; - } - } - - tc_warn("Found no free epids\n"); - DBFEXIT; - return -1; -} - - -/* Wrappers around the list functions (include/linux/list.h). */ -/* ---------------------------------------------------------- */ -static inline int __urb_list_empty(int epid) { - int retval; - retval = list_empty(&urb_list[epid]); - return retval; -} - -/* Returns first urb for this epid, or NULL if list is empty. */ -static inline struct urb *urb_list_first(int epid) { - unsigned long flags; - struct urb *first_urb = 0; - spin_lock_irqsave(&urb_list_lock, flags); - if (!__urb_list_empty(epid)) { - /* Get the first urb (i.e. head->next). */ - urb_entry_t *urb_entry = list_entry((&urb_list[epid])->next, urb_entry_t, list); - first_urb = urb_entry->urb; - } - spin_unlock_irqrestore(&urb_list_lock, flags); - return first_urb; -} - -/* Adds an urb_entry last in the list for this epid. */ -static inline void urb_list_add(struct urb *urb, int epid, int mem_flags) { - unsigned long flags; - urb_entry_t *urb_entry = (urb_entry_t *)kmalloc(sizeof(urb_entry_t), mem_flags); - ASSERT(urb_entry); - - urb_entry->urb = urb; - spin_lock_irqsave(&urb_list_lock, flags); - list_add_tail(&urb_entry->list, &urb_list[epid]); - spin_unlock_irqrestore(&urb_list_lock, flags); -} - -/* Search through the list for an element that contains this urb. (The list - is expected to be short and the one we are about to delete will often be - the first in the list.) - Should be protected by spin_locks in calling function */ -static inline urb_entry_t *__urb_list_entry(struct urb *urb, int epid) { - struct list_head *entry; - struct list_head *tmp; - urb_entry_t *urb_entry; - - list_for_each_safe(entry, tmp, &urb_list[epid]) { - urb_entry = list_entry(entry, urb_entry_t, list); - ASSERT(urb_entry); - ASSERT(urb_entry->urb); - - if (urb_entry->urb == urb) { - return urb_entry; - } - } - return 0; -} - -/* Same function as above but for global use. Protects list by spinlock */ -static inline urb_entry_t *urb_list_entry(struct urb *urb, int epid) { - unsigned long flags; - urb_entry_t *urb_entry; - spin_lock_irqsave(&urb_list_lock, flags); - urb_entry = __urb_list_entry(urb, epid); - spin_unlock_irqrestore(&urb_list_lock, flags); - return (urb_entry); -} - -/* Delete an urb from the list. */ -static inline void urb_list_del(struct urb *urb, int epid) { - unsigned long flags; - urb_entry_t *urb_entry; - - /* Delete entry and free. */ - spin_lock_irqsave(&urb_list_lock, flags); - urb_entry = __urb_list_entry(urb, epid); - ASSERT(urb_entry); - - list_del(&urb_entry->list); - spin_unlock_irqrestore(&urb_list_lock, flags); - kfree(urb_entry); -} - -/* Move an urb to the end of the list. */ -static inline void urb_list_move_last(struct urb *urb, int epid) { - unsigned long flags; - urb_entry_t *urb_entry; - - spin_lock_irqsave(&urb_list_lock, flags); - urb_entry = __urb_list_entry(urb, epid); - ASSERT(urb_entry); - - list_del(&urb_entry->list); - list_add_tail(&urb_entry->list, &urb_list[epid]); - spin_unlock_irqrestore(&urb_list_lock, flags); -} - -/* Get the next urb in the list. */ -static inline struct urb *urb_list_next(struct urb *urb, int epid) { - unsigned long flags; - urb_entry_t *urb_entry; - - spin_lock_irqsave(&urb_list_lock, flags); - urb_entry = __urb_list_entry(urb, epid); - ASSERT(urb_entry); - - if (urb_entry->list.next != &urb_list[epid]) { - struct list_head *elem = urb_entry->list.next; - urb_entry = list_entry(elem, urb_entry_t, list); - spin_unlock_irqrestore(&urb_list_lock, flags); - return urb_entry->urb; - } else { - spin_unlock_irqrestore(&urb_list_lock, flags); - return NULL; - } -} - -struct USB_EP_Desc* create_ep(int epid, struct USB_SB_Desc* sb_desc, - int mem_flags) { - struct USB_EP_Desc *ep_desc; - ep_desc = (struct USB_EP_Desc *) kmem_cache_alloc(usb_desc_cache, mem_flags); - if(ep_desc == NULL) - return NULL; - memset(ep_desc, 0, sizeof(struct USB_EP_Desc)); - - ep_desc->hw_len = 0; - ep_desc->command = (IO_FIELD(USB_EP_command, epid, epid) | - IO_STATE(USB_EP_command, enable, yes)); - if(sb_desc == NULL) { - ep_desc->sub = 0; - } else { - ep_desc->sub = virt_to_phys(sb_desc); - } - return ep_desc; -} - -#define TT_ZOUT 0 -#define TT_IN 1 -#define TT_OUT 2 -#define TT_SETUP 3 - -#define CMD_EOL IO_STATE(USB_SB_command, eol, yes) -#define CMD_INTR IO_STATE(USB_SB_command, intr, yes) -#define CMD_FULL IO_STATE(USB_SB_command, full, yes) - -/* Allocation and setup of a generic SB. Used to create SETUP, OUT and ZOUT - SBs. Also used by create_sb_in() to avoid same allocation procedure at two - places */ -struct USB_SB_Desc* create_sb(struct USB_SB_Desc* sb_prev, int tt, void* data, - int datalen, int mem_flags) { - struct USB_SB_Desc *sb_desc; - sb_desc = (struct USB_SB_Desc*)kmem_cache_alloc(usb_desc_cache, mem_flags); - if(sb_desc == NULL) - return NULL; - memset(sb_desc, 0, sizeof(struct USB_SB_Desc)); - - sb_desc->command = IO_FIELD(USB_SB_command, tt, tt) | - IO_STATE(USB_SB_command, eot, yes); - - sb_desc->sw_len = datalen; - if(data != NULL) { - sb_desc->buf = virt_to_phys(data); - } else { - sb_desc->buf = 0; - } - if(sb_prev != NULL) { - sb_prev->next = virt_to_phys(sb_desc); - } - return sb_desc; -} - -/* Creates a copy of an existing SB by allocation space for it and copy - settings */ -struct USB_SB_Desc* create_sb_copy(struct USB_SB_Desc* sb_orig, int mem_flags) { - struct USB_SB_Desc *sb_desc; - sb_desc = (struct USB_SB_Desc*)kmem_cache_alloc(usb_desc_cache, mem_flags); - if(sb_desc == NULL) - return NULL; - - memcpy(sb_desc, sb_orig, sizeof(struct USB_SB_Desc)); - return sb_desc; -} - -/* A specific create_sb function for creation of in SBs. This is due to - that datalen in In SBs shows how many packets we are expecting. It also - sets up the rem field to show if how many bytes we expect in last packet - if it's not a full one */ -struct USB_SB_Desc* create_sb_in(struct USB_SB_Desc* sb_prev, int datalen, - int maxlen, int mem_flags) { - struct USB_SB_Desc *sb_desc; - sb_desc = create_sb(sb_prev, TT_IN, NULL, - datalen ? (datalen - 1) / maxlen + 1 : 0, mem_flags); - if(sb_desc == NULL) - return NULL; - sb_desc->command |= IO_FIELD(USB_SB_command, rem, datalen % maxlen); - return sb_desc; -} - -void set_sb_cmds(struct USB_SB_Desc *sb_desc, __u16 flags) { - sb_desc->command |= flags; -} - -int create_sb_for_urb(struct urb *urb, int mem_flags) { - int is_out = !usb_pipein(urb->pipe); - int type = usb_pipetype(urb->pipe); - int maxlen = usb_maxpacket(urb->dev, urb->pipe, is_out); - int buf_len = urb->transfer_buffer_length; - void *buf = buf_len > 0 ? urb->transfer_buffer : NULL; - struct USB_SB_Desc *sb_desc = NULL; - - struct crisv10_urb_priv *urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; - ASSERT(urb_priv != NULL); - - switch(type) { - case PIPE_CONTROL: - /* Setup stage */ - sb_desc = create_sb(NULL, TT_SETUP, urb->setup_packet, 8, mem_flags); - if(sb_desc == NULL) - return -ENOMEM; - set_sb_cmds(sb_desc, CMD_FULL); - - /* Attach first SB to URB */ - urb_priv->first_sb = sb_desc; - - if (is_out) { /* Out Control URB */ - /* If this Control OUT transfer has an optional data stage we add - an OUT token before the mandatory IN (status) token */ - if ((buf_len > 0) && buf) { - sb_desc = create_sb(sb_desc, TT_OUT, buf, buf_len, mem_flags); - if(sb_desc == NULL) - return -ENOMEM; - set_sb_cmds(sb_desc, CMD_FULL); - } - - /* Status stage */ - /* The data length has to be exactly 1. This is due to a requirement - of the USB specification that a host must be prepared to receive - data in the status phase */ - sb_desc = create_sb(sb_desc, TT_IN, NULL, 1, mem_flags); - if(sb_desc == NULL) - return -ENOMEM; - } else { /* In control URB */ - /* Data stage */ - sb_desc = create_sb_in(sb_desc, buf_len, maxlen, mem_flags); - if(sb_desc == NULL) - return -ENOMEM; - - /* Status stage */ - /* Read comment at zout_buffer declaration for an explanation to this. */ - sb_desc = create_sb(sb_desc, TT_ZOUT, &zout_buffer[0], 1, mem_flags); - if(sb_desc == NULL) - return -ENOMEM; - /* Set descriptor interrupt flag for in URBs so we can finish URB after - zout-packet has been sent */ - set_sb_cmds(sb_desc, CMD_INTR | CMD_FULL); - } - /* Set end-of-list flag in last SB */ - set_sb_cmds(sb_desc, CMD_EOL); - /* Attach last SB to URB */ - urb_priv->last_sb = sb_desc; - break; - - case PIPE_BULK: - if (is_out) { /* Out Bulk URB */ - sb_desc = create_sb(NULL, TT_OUT, buf, buf_len, mem_flags); - if(sb_desc == NULL) - return -ENOMEM; - /* The full field is set to yes, even if we don't actually check that - this is a full-length transfer (i.e., that transfer_buffer_length % - maxlen = 0). - Setting full prevents the USB controller from sending an empty packet - in that case. However, if URB_ZERO_PACKET was set we want that. */ - if (!(urb->transfer_flags & URB_ZERO_PACKET)) { - set_sb_cmds(sb_desc, CMD_FULL); - } - } else { /* In Bulk URB */ - sb_desc = create_sb_in(NULL, buf_len, maxlen, mem_flags); - if(sb_desc == NULL) - return -ENOMEM; - } - /* Set end-of-list flag for last SB */ - set_sb_cmds(sb_desc, CMD_EOL); - - /* Attach SB to URB */ - urb_priv->first_sb = sb_desc; - urb_priv->last_sb = sb_desc; - break; - - case PIPE_INTERRUPT: - if(is_out) { /* Out Intr URB */ - sb_desc = create_sb(NULL, TT_OUT, buf, buf_len, mem_flags); - if(sb_desc == NULL) - return -ENOMEM; - - /* The full field is set to yes, even if we don't actually check that - this is a full-length transfer (i.e., that transfer_buffer_length % - maxlen = 0). - Setting full prevents the USB controller from sending an empty packet - in that case. However, if URB_ZERO_PACKET was set we want that. */ - if (!(urb->transfer_flags & URB_ZERO_PACKET)) { - set_sb_cmds(sb_desc, CMD_FULL); - } - /* Only generate TX interrupt if it's a Out URB*/ - set_sb_cmds(sb_desc, CMD_INTR); - - } else { /* In Intr URB */ - sb_desc = create_sb_in(NULL, buf_len, maxlen, mem_flags); - if(sb_desc == NULL) - return -ENOMEM; - } - /* Set end-of-list flag for last SB */ - set_sb_cmds(sb_desc, CMD_EOL); - - /* Attach SB to URB */ - urb_priv->first_sb = sb_desc; - urb_priv->last_sb = sb_desc; - - break; - case PIPE_ISOCHRONOUS: - if(is_out) { /* Out Isoc URB */ - int i; - if(urb->number_of_packets == 0) { - tc_err("Can't create SBs for Isoc URB with zero packets\n"); - return -EPIPE; - } - /* Create one SB descriptor for each packet and link them together. */ - for(i = 0; i < urb->number_of_packets; i++) { - if (urb->iso_frame_desc[i].length > 0) { - - sb_desc = create_sb(sb_desc, TT_OUT, urb->transfer_buffer + - urb->iso_frame_desc[i].offset, - urb->iso_frame_desc[i].length, mem_flags); - if(sb_desc == NULL) - return -ENOMEM; - - /* Check if it's a full length packet */ - if (urb->iso_frame_desc[i].length == - usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe))) { - set_sb_cmds(sb_desc, CMD_FULL); - } - - } else { /* zero length packet */ - sb_desc = create_sb(sb_desc, TT_ZOUT, &zout_buffer[0], 1, mem_flags); - if(sb_desc == NULL) - return -ENOMEM; - set_sb_cmds(sb_desc, CMD_FULL); - } - /* Attach first SB descriptor to URB */ - if (i == 0) { - urb_priv->first_sb = sb_desc; - } - } - /* Set interrupt and end-of-list flags in last SB */ - set_sb_cmds(sb_desc, CMD_INTR | CMD_EOL); - /* Attach last SB descriptor to URB */ - urb_priv->last_sb = sb_desc; - tc_dbg("Created %d out SBs for Isoc URB:0x%x\n", - urb->number_of_packets, (unsigned int)urb); - } else { /* In Isoc URB */ - /* Actual number of packets is not relevant for periodic in traffic as - long as it is more than zero. Set to 1 always. */ - sb_desc = create_sb(sb_desc, TT_IN, NULL, 1, mem_flags); - if(sb_desc == NULL) - return -ENOMEM; - /* Set end-of-list flags for SB */ - set_sb_cmds(sb_desc, CMD_EOL); - - /* Attach SB to URB */ - urb_priv->first_sb = sb_desc; - urb_priv->last_sb = sb_desc; - } - break; - default: - tc_err("Unknown pipe-type\n"); - return -EPIPE; - break; - } - return 0; -} - -int init_intr_urb(struct urb *urb, int mem_flags) { - struct crisv10_urb_priv *urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; - struct USB_EP_Desc* ep_desc; - int interval; - int i; - int ep_count; - - ASSERT(urb_priv != NULL); - ASSERT(usb_pipeint(urb->pipe)); - /* We can't support interval longer than amount of eof descriptors in - TxIntrEPList */ - if(urb->interval > MAX_INTR_INTERVAL) { - tc_err("Interrupt interval %dms too big (max: %dms)\n", urb->interval, - MAX_INTR_INTERVAL); - return -EINVAL; - } - - /* We assume that the SB descriptors already have been setup */ - ASSERT(urb_priv->first_sb != NULL); - - /* Round of the interval to 2^n, it is obvious that this code favours - smaller numbers, but that is actually a good thing */ - /* FIXME: The "rounding error" for larger intervals will be quite - large. For in traffic this shouldn't be a problem since it will only - mean that we "poll" more often. */ - interval = urb->interval; - for (i = 0; interval; i++) { - interval = interval >> 1; - } - urb_priv->interval = 1 << (i - 1); - - /* We can only have max interval for Out Interrupt due to that we can only - handle one linked in EP for a certain epid in the Intr descr array at the - time. The USB Controller in the Etrax 100LX continues to process Intr EPs - so we have no way of knowing which one that caused the actual transfer if - we have several linked in. */ - if(usb_pipeout(urb->pipe)) { - urb_priv->interval = MAX_INTR_INTERVAL; - } - - /* Calculate amount of EPs needed */ - ep_count = MAX_INTR_INTERVAL / urb_priv->interval; - - for(i = 0; i < ep_count; i++) { - ep_desc = create_ep(urb_priv->epid, urb_priv->first_sb, mem_flags); - if(ep_desc == NULL) { - /* Free any descriptors that we may have allocated before failure */ - while(i > 0) { - i--; - kfree(urb_priv->intr_ep_pool[i]); - } - return -ENOMEM; - } - urb_priv->intr_ep_pool[i] = ep_desc; - } - urb_priv->intr_ep_pool_length = ep_count; - return 0; -} - -/* DMA RX/TX functions */ -/* ----------------------- */ - -static void tc_dma_init_rx_list(void) { - int i; - - /* Setup descriptor list except last one */ - for (i = 0; i < (NBR_OF_RX_DESC - 1); i++) { - RxDescList[i].sw_len = RX_DESC_BUF_SIZE; - RxDescList[i].command = 0; - RxDescList[i].next = virt_to_phys(&RxDescList[i + 1]); - RxDescList[i].buf = virt_to_phys(RxBuf + (i * RX_DESC_BUF_SIZE)); - RxDescList[i].hw_len = 0; - RxDescList[i].status = 0; - - /* DMA IN cache bug. (struct etrax_dma_descr has the same layout as - USB_IN_Desc for the relevant fields.) */ - prepare_rx_descriptor((struct etrax_dma_descr*)&RxDescList[i]); - - } - /* Special handling of last descriptor */ - RxDescList[i].sw_len = RX_DESC_BUF_SIZE; - RxDescList[i].command = IO_STATE(USB_IN_command, eol, yes); - RxDescList[i].next = virt_to_phys(&RxDescList[0]); - RxDescList[i].buf = virt_to_phys(RxBuf + (i * RX_DESC_BUF_SIZE)); - RxDescList[i].hw_len = 0; - RxDescList[i].status = 0; - - /* Setup list pointers that show progress in list */ - myNextRxDesc = &RxDescList[0]; - myLastRxDesc = &RxDescList[NBR_OF_RX_DESC - 1]; - - flush_etrax_cache(); - /* Point DMA to first descriptor in list and start it */ - *R_DMA_CH9_FIRST = virt_to_phys(myNextRxDesc); - *R_DMA_CH9_CMD = IO_STATE(R_DMA_CH9_CMD, cmd, start); -} - - -static void tc_dma_init_tx_bulk_list(void) { - int i; - volatile struct USB_EP_Desc *epDescr; - - for (i = 0; i < (NBR_OF_EPIDS - 1); i++) { - epDescr = &(TxBulkEPList[i]); - CHECK_ALIGN(epDescr); - epDescr->hw_len = 0; - epDescr->command = IO_FIELD(USB_EP_command, epid, i); - epDescr->sub = 0; - epDescr->next = virt_to_phys(&TxBulkEPList[i + 1]); - - /* Initiate two EPs, disabled and with the eol flag set. No need for any - preserved epid. */ - - /* The first one has the intr flag set so we get an interrupt when the DMA - channel is about to become disabled. */ - CHECK_ALIGN(&TxBulkDummyEPList[i][0]); - TxBulkDummyEPList[i][0].hw_len = 0; - TxBulkDummyEPList[i][0].command = (IO_FIELD(USB_EP_command, epid, DUMMY_EPID) | - IO_STATE(USB_EP_command, eol, yes) | - IO_STATE(USB_EP_command, intr, yes)); - TxBulkDummyEPList[i][0].sub = 0; - TxBulkDummyEPList[i][0].next = virt_to_phys(&TxBulkDummyEPList[i][1]); - - /* The second one. */ - CHECK_ALIGN(&TxBulkDummyEPList[i][1]); - TxBulkDummyEPList[i][1].hw_len = 0; - TxBulkDummyEPList[i][1].command = (IO_FIELD(USB_EP_command, epid, DUMMY_EPID) | - IO_STATE(USB_EP_command, eol, yes)); - TxBulkDummyEPList[i][1].sub = 0; - /* The last dummy's next pointer is the same as the current EP's next pointer. */ - TxBulkDummyEPList[i][1].next = virt_to_phys(&TxBulkEPList[i + 1]); - } - - /* Special handling of last descr in list, make list circular */ - epDescr = &TxBulkEPList[i]; - CHECK_ALIGN(epDescr); - epDescr->hw_len = 0; - epDescr->command = IO_STATE(USB_EP_command, eol, yes) | - IO_FIELD(USB_EP_command, epid, i); - epDescr->sub = 0; - epDescr->next = virt_to_phys(&TxBulkEPList[0]); - - /* Init DMA sub-channel pointers to last item in each list */ - *R_DMA_CH8_SUB0_EP = virt_to_phys(&TxBulkEPList[i]); - /* No point in starting the bulk channel yet. - *R_DMA_CH8_SUB0_CMD = IO_STATE(R_DMA_CH8_SUB0_CMD, cmd, start); */ -} - -static void tc_dma_init_tx_ctrl_list(void) { - int i; - volatile struct USB_EP_Desc *epDescr; - - for (i = 0; i < (NBR_OF_EPIDS - 1); i++) { - epDescr = &(TxCtrlEPList[i]); - CHECK_ALIGN(epDescr); - epDescr->hw_len = 0; - epDescr->command = IO_FIELD(USB_EP_command, epid, i); - epDescr->sub = 0; - epDescr->next = virt_to_phys(&TxCtrlEPList[i + 1]); - } - /* Special handling of last descr in list, make list circular */ - epDescr = &TxCtrlEPList[i]; - CHECK_ALIGN(epDescr); - epDescr->hw_len = 0; - epDescr->command = IO_STATE(USB_EP_command, eol, yes) | - IO_FIELD(USB_EP_command, epid, i); - epDescr->sub = 0; - epDescr->next = virt_to_phys(&TxCtrlEPList[0]); - - /* Init DMA sub-channel pointers to last item in each list */ - *R_DMA_CH8_SUB1_EP = virt_to_phys(&TxCtrlEPList[i]); - /* No point in starting the ctrl channel yet. - *R_DMA_CH8_SUB1_CMD = IO_STATE(R_DMA_CH8_SUB0_CMD, cmd, start); */ -} - - -static void tc_dma_init_tx_intr_list(void) { - int i; - - TxIntrSB_zout.sw_len = 1; - TxIntrSB_zout.next = 0; - TxIntrSB_zout.buf = virt_to_phys(&zout_buffer[0]); - TxIntrSB_zout.command = (IO_FIELD(USB_SB_command, rem, 0) | - IO_STATE(USB_SB_command, tt, zout) | - IO_STATE(USB_SB_command, full, yes) | - IO_STATE(USB_SB_command, eot, yes) | - IO_STATE(USB_SB_command, eol, yes)); - - for (i = 0; i < (MAX_INTR_INTERVAL - 1); i++) { - CHECK_ALIGN(&TxIntrEPList[i]); - TxIntrEPList[i].hw_len = 0; - TxIntrEPList[i].command = - (IO_STATE(USB_EP_command, eof, yes) | - IO_STATE(USB_EP_command, enable, yes) | - IO_FIELD(USB_EP_command, epid, INVALID_EPID)); - TxIntrEPList[i].sub = virt_to_phys(&TxIntrSB_zout); - TxIntrEPList[i].next = virt_to_phys(&TxIntrEPList[i + 1]); - } - - /* Special handling of last descr in list, make list circular */ - CHECK_ALIGN(&TxIntrEPList[i]); - TxIntrEPList[i].hw_len = 0; - TxIntrEPList[i].command = - (IO_STATE(USB_EP_command, eof, yes) | - IO_STATE(USB_EP_command, eol, yes) | - IO_STATE(USB_EP_command, enable, yes) | - IO_FIELD(USB_EP_command, epid, INVALID_EPID)); - TxIntrEPList[i].sub = virt_to_phys(&TxIntrSB_zout); - TxIntrEPList[i].next = virt_to_phys(&TxIntrEPList[0]); - - intr_dbg("Initiated Intr EP descriptor list\n"); - - - /* Connect DMA 8 sub-channel 2 to first in list */ - *R_DMA_CH8_SUB2_EP = virt_to_phys(&TxIntrEPList[0]); -} - -static void tc_dma_init_tx_isoc_list(void) { - int i; - - DBFENTER; - - /* Read comment at zout_buffer declaration for an explanation to this. */ - TxIsocSB_zout.sw_len = 1; - TxIsocSB_zout.next = 0; - TxIsocSB_zout.buf = virt_to_phys(&zout_buffer[0]); - TxIsocSB_zout.command = (IO_FIELD(USB_SB_command, rem, 0) | - IO_STATE(USB_SB_command, tt, zout) | - IO_STATE(USB_SB_command, full, yes) | - IO_STATE(USB_SB_command, eot, yes) | - IO_STATE(USB_SB_command, eol, yes)); - - /* The last isochronous EP descriptor is a dummy. */ - for (i = 0; i < (NBR_OF_EPIDS - 1); i++) { - CHECK_ALIGN(&TxIsocEPList[i]); - TxIsocEPList[i].hw_len = 0; - TxIsocEPList[i].command = IO_FIELD(USB_EP_command, epid, i); - TxIsocEPList[i].sub = 0; - TxIsocEPList[i].next = virt_to_phys(&TxIsocEPList[i + 1]); - } - - CHECK_ALIGN(&TxIsocEPList[i]); - TxIsocEPList[i].hw_len = 0; - - /* Must enable the last EP descr to get eof interrupt. */ - TxIsocEPList[i].command = (IO_STATE(USB_EP_command, enable, yes) | - IO_STATE(USB_EP_command, eof, yes) | - IO_STATE(USB_EP_command, eol, yes) | - IO_FIELD(USB_EP_command, epid, INVALID_EPID)); - TxIsocEPList[i].sub = virt_to_phys(&TxIsocSB_zout); - TxIsocEPList[i].next = virt_to_phys(&TxIsocEPList[0]); - - *R_DMA_CH8_SUB3_EP = virt_to_phys(&TxIsocEPList[0]); - *R_DMA_CH8_SUB3_CMD = IO_STATE(R_DMA_CH8_SUB3_CMD, cmd, start); -} - -static int tc_dma_init(struct usb_hcd *hcd) { - tc_dma_init_rx_list(); - tc_dma_init_tx_bulk_list(); - tc_dma_init_tx_ctrl_list(); - tc_dma_init_tx_intr_list(); - tc_dma_init_tx_isoc_list(); - - if (cris_request_dma(USB_TX_DMA_NBR, - "ETRAX 100LX built-in USB (Tx)", - DMA_VERBOSE_ON_ERROR, - dma_usb)) { - err("Could not allocate DMA ch 8 for USB"); - return -EBUSY; - } - - if (cris_request_dma(USB_RX_DMA_NBR, - "ETRAX 100LX built-in USB (Rx)", - DMA_VERBOSE_ON_ERROR, - dma_usb)) { - err("Could not allocate DMA ch 9 for USB"); - return -EBUSY; - } - - *R_IRQ_MASK2_SET = - /* Note that these interrupts are not used. */ - IO_STATE(R_IRQ_MASK2_SET, dma8_sub0_descr, set) | - /* Sub channel 1 (ctrl) descr. interrupts are used. */ - IO_STATE(R_IRQ_MASK2_SET, dma8_sub1_descr, set) | - IO_STATE(R_IRQ_MASK2_SET, dma8_sub2_descr, set) | - /* Sub channel 3 (isoc) descr. interrupts are used. */ - IO_STATE(R_IRQ_MASK2_SET, dma8_sub3_descr, set); - - /* Note that the dma9_descr interrupt is not used. */ - *R_IRQ_MASK2_SET = - IO_STATE(R_IRQ_MASK2_SET, dma9_eop, set) | - IO_STATE(R_IRQ_MASK2_SET, dma9_descr, set); - - if (request_irq(ETRAX_USB_RX_IRQ, tc_dma_rx_interrupt, 0, - "ETRAX 100LX built-in USB (Rx)", hcd)) { - err("Could not allocate IRQ %d for USB", ETRAX_USB_RX_IRQ); - return -EBUSY; - } - - if (request_irq(ETRAX_USB_TX_IRQ, tc_dma_tx_interrupt, 0, - "ETRAX 100LX built-in USB (Tx)", hcd)) { - err("Could not allocate IRQ %d for USB", ETRAX_USB_TX_IRQ); - return -EBUSY; - } - - return 0; -} - -static void tc_dma_destroy(void) { - free_irq(ETRAX_USB_RX_IRQ, NULL); - free_irq(ETRAX_USB_TX_IRQ, NULL); - - cris_free_dma(USB_TX_DMA_NBR, "ETRAX 100LX built-in USB (Tx)"); - cris_free_dma(USB_RX_DMA_NBR, "ETRAX 100LX built-in USB (Rx)"); - -} - -static void tc_dma_link_intr_urb(struct urb *urb); - -/* Handle processing of Bulk, Ctrl and Intr queues */ -static void tc_dma_process_queue(int epid) { - struct urb *urb; - struct crisv10_urb_priv *urb_priv; - unsigned long flags; - char toggle; - - if(epid_state[epid].disabled) { - /* Don't process any URBs on a disabled endpoint */ - return; - } - - /* Do not disturb us while fiddling with EPs and epids */ - local_irq_save(flags); - - /* For bulk, Ctrl and Intr can we only have one URB active at a time for - a specific EP. */ - if(activeUrbList[epid] != NULL) { - /* An URB is already active on EP, skip checking queue */ - local_irq_restore(flags); - return; - } - - urb = urb_list_first(epid); - if(urb == NULL) { - /* No URB waiting in EP queue. Nothing do to */ - local_irq_restore(flags); - return; - } - - urb_priv = urb->hcpriv; - ASSERT(urb_priv != NULL); - ASSERT(urb_priv->urb_state == NOT_STARTED); - ASSERT(!usb_pipeisoc(urb->pipe)); - - /* Remove this URB from the queue and move it to active */ - activeUrbList[epid] = urb; - urb_list_del(urb, epid); - - urb_priv->urb_state = STARTED; - - /* Reset error counters (regardless of which direction this traffic is). */ - etrax_epid_clear_error(epid); - - /* Special handling of Intr EP lists */ - if(usb_pipeint(urb->pipe)) { - tc_dma_link_intr_urb(urb); - local_irq_restore(flags); - return; - } - - /* Software must preset the toggle bits for Bulk and Ctrl */ - if(usb_pipecontrol(urb->pipe)) { - /* Toggle bits are initialized only during setup transaction in a - CTRL transfer */ - etrax_epid_set_toggle(epid, 0, 0); - etrax_epid_set_toggle(epid, 1, 0); - } else { - toggle = usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe), - usb_pipeout(urb->pipe)); - etrax_epid_set_toggle(epid, usb_pipeout(urb->pipe), toggle); - } - - tc_dbg("Added SBs from (URB:0x%x %s %s) to epid %d: %s\n", - (unsigned int)urb, str_dir(urb->pipe), str_type(urb->pipe), epid, - sblist_to_str(urb_priv->first_sb)); - - /* We start the DMA sub channel without checking if it's running or not, - because: - 1) If it's already running, issuing the start command is a nop. - 2) We avoid a test-and-set race condition. */ - switch(usb_pipetype(urb->pipe)) { - case PIPE_BULK: - /* Assert that the EP descriptor is disabled. */ - ASSERT(!(TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable))); - - /* Set up and enable the EP descriptor. */ - TxBulkEPList[epid].sub = virt_to_phys(urb_priv->first_sb); - TxBulkEPList[epid].hw_len = 0; - TxBulkEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes); - - /* Check if the dummy list is already with us (if several urbs were queued). */ - if (usb_pipein(urb->pipe) && (TxBulkEPList[epid].next != virt_to_phys(&TxBulkDummyEPList[epid][0]))) { - tc_dbg("Inviting dummy list to the party for urb 0x%lx, epid %d", - (unsigned long)urb, epid); - - /* We don't need to check if the DMA is at this EP or not before changing the - next pointer, since we will do it in one 32-bit write (EP descriptors are - 32-bit aligned). */ - TxBulkEPList[epid].next = virt_to_phys(&TxBulkDummyEPList[epid][0]); - } - - restart_dma8_sub0(); - - /* Update/restart the bulk start timer since we just started the channel.*/ - mod_timer(&bulk_start_timer, jiffies + BULK_START_TIMER_INTERVAL); - /* Update/restart the bulk eot timer since we just inserted traffic. */ - mod_timer(&bulk_eot_timer, jiffies + BULK_EOT_TIMER_INTERVAL); - break; - case PIPE_CONTROL: - /* Assert that the EP descriptor is disabled. */ - ASSERT(!(TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable))); - - /* Set up and enable the EP descriptor. */ - TxCtrlEPList[epid].sub = virt_to_phys(urb_priv->first_sb); - TxCtrlEPList[epid].hw_len = 0; - TxCtrlEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes); - - *R_DMA_CH8_SUB1_CMD = IO_STATE(R_DMA_CH8_SUB1_CMD, cmd, start); - break; - } - local_irq_restore(flags); -} - -static void tc_dma_link_intr_urb(struct urb *urb) { - struct crisv10_urb_priv *urb_priv = urb->hcpriv; - volatile struct USB_EP_Desc *tmp_ep; - struct USB_EP_Desc *ep_desc; - int i = 0, epid; - int pool_idx = 0; - - ASSERT(urb_priv != NULL); - epid = urb_priv->epid; - ASSERT(urb_priv->interval > 0); - ASSERT(urb_priv->intr_ep_pool_length > 0); - - tmp_ep = &TxIntrEPList[0]; - - /* Only insert one EP descriptor in list for Out Intr URBs. - We can only handle Out Intr with interval of 128ms because - it's not possible to insert several Out Intr EPs because they - are not consumed by the DMA. */ - if(usb_pipeout(urb->pipe)) { - ep_desc = urb_priv->intr_ep_pool[0]; - ASSERT(ep_desc); - ep_desc->next = tmp_ep->next; - tmp_ep->next = virt_to_phys(ep_desc); - i++; - } else { - /* Loop through Intr EP descriptor list and insert EP for URB at - specified interval */ - do { - /* Each EP descriptor with eof flag sat signals a new frame */ - if (tmp_ep->command & IO_MASK(USB_EP_command, eof)) { - /* Insert a EP from URBs EP pool at correct interval */ - if ((i % urb_priv->interval) == 0) { - ep_desc = urb_priv->intr_ep_pool[pool_idx]; - ASSERT(ep_desc); - ep_desc->next = tmp_ep->next; - tmp_ep->next = virt_to_phys(ep_desc); - pool_idx++; - ASSERT(pool_idx <= urb_priv->intr_ep_pool_length); - } - i++; - } - tmp_ep = (struct USB_EP_Desc *)phys_to_virt(tmp_ep->next); - } while(tmp_ep != &TxIntrEPList[0]); - } - - intr_dbg("Added SBs to intr epid %d: %s interval:%d (%d EP)\n", epid, - sblist_to_str(urb_priv->first_sb), urb_priv->interval, pool_idx); - - /* We start the DMA sub channel without checking if it's running or not, - because: - 1) If it's already running, issuing the start command is a nop. - 2) We avoid a test-and-set race condition. */ - *R_DMA_CH8_SUB2_CMD = IO_STATE(R_DMA_CH8_SUB2_CMD, cmd, start); -} - -static void tc_dma_process_isoc_urb(struct urb *urb) { - unsigned long flags; - struct crisv10_urb_priv *urb_priv = urb->hcpriv; - int epid; - - /* Do not disturb us while fiddling with EPs and epids */ - local_irq_save(flags); - - ASSERT(urb_priv); - ASSERT(urb_priv->first_sb); - epid = urb_priv->epid; - - if(activeUrbList[epid] == NULL) { - /* EP is idle, so make this URB active */ - activeUrbList[epid] = urb; - urb_list_del(urb, epid); - ASSERT(TxIsocEPList[epid].sub == 0); - ASSERT(!(TxIsocEPList[epid].command & - IO_STATE(USB_EP_command, enable, yes))); - - /* Differentiate between In and Out Isoc. Because In SBs are not consumed*/ - if(usb_pipein(urb->pipe)) { - /* Each EP for In Isoc will have only one SB descriptor, setup when - submitting the first active urb. We do it here by copying from URBs - pre-allocated SB. */ - memcpy((void *)&(TxIsocSBList[epid]), urb_priv->first_sb, - sizeof(TxIsocSBList[epid])); - TxIsocEPList[epid].hw_len = 0; - TxIsocEPList[epid].sub = virt_to_phys(&(TxIsocSBList[epid])); - } else { - /* For Out Isoc we attach the pre-allocated list of SBs for the URB */ - TxIsocEPList[epid].hw_len = 0; - TxIsocEPList[epid].sub = virt_to_phys(urb_priv->first_sb); - - isoc_dbg("Attached first URB:0x%x[%d] to epid:%d first_sb:0x%x" - " last_sb::0x%x\n", - (unsigned int)urb, urb_priv->urb_num, epid, - (unsigned int)(urb_priv->first_sb), - (unsigned int)(urb_priv->last_sb)); - } - - if (urb->transfer_flags & URB_ISO_ASAP) { - /* The isoc transfer should be started as soon as possible. The - start_frame field is a return value if URB_ISO_ASAP was set. Comparing - R_USB_FM_NUMBER with a USB Chief trace shows that the first isoc IN - token is sent 2 frames later. I'm not sure how this affects usage of - the start_frame field by the device driver, or how it affects things - when USB_ISO_ASAP is not set, so therefore there's no compensation for - the 2 frame "lag" here. */ - urb->start_frame = (*R_USB_FM_NUMBER & 0x7ff); - TxIsocEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes); - urb_priv->urb_state = STARTED; - isoc_dbg("URB_ISO_ASAP set, urb->start_frame set to %d\n", - urb->start_frame); - } else { - /* Not started yet. */ - urb_priv->urb_state = NOT_STARTED; - isoc_warn("urb_priv->urb_state set to NOT_STARTED for URB:0x%x\n", - (unsigned int)urb); - } - - } else { - /* An URB is already active on the EP. Leave URB in queue and let - finish_isoc_urb process it after current active URB */ - ASSERT(TxIsocEPList[epid].sub != 0); - - if(usb_pipein(urb->pipe)) { - /* Because there already is a active In URB on this epid we do nothing - and the finish_isoc_urb() function will handle switching to next URB*/ - - } else { /* For Out Isoc, insert new URBs traffic last in SB-list. */ - struct USB_SB_Desc *temp_sb_desc; - - /* Set state STARTED to all Out Isoc URBs added to SB list because we - don't know how many of them that are finished before descr interrupt*/ - urb_priv->urb_state = STARTED; - - /* Find end of current SB list by looking for SB with eol flag sat */ - temp_sb_desc = phys_to_virt(TxIsocEPList[epid].sub); - while ((temp_sb_desc->command & IO_MASK(USB_SB_command, eol)) != - IO_STATE(USB_SB_command, eol, yes)) { - ASSERT(temp_sb_desc->next); - temp_sb_desc = phys_to_virt(temp_sb_desc->next); - } - - isoc_dbg("Appended URB:0x%x[%d] (first:0x%x last:0x%x) to epid:%d" - " sub:0x%x eol:0x%x\n", - (unsigned int)urb, urb_priv->urb_num, - (unsigned int)(urb_priv->first_sb), - (unsigned int)(urb_priv->last_sb), epid, - (unsigned int)phys_to_virt(TxIsocEPList[epid].sub), - (unsigned int)temp_sb_desc); - - /* Next pointer must be set before eol is removed. */ - temp_sb_desc->next = virt_to_phys(urb_priv->first_sb); - /* Clear the previous end of list flag since there is a new in the - added SB descriptor list. */ - temp_sb_desc->command &= ~IO_MASK(USB_SB_command, eol); - - if (!(TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable))) { - __u32 epid_data; - /* 8.8.5 in Designer's Reference says we should check for and correct - any errors in the EP here. That should not be necessary if - epid_attn is handled correctly, so we assume all is ok. */ - epid_data = etrax_epid_iso_get(epid); - if (IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data) != - IO_STATE_VALUE(R_USB_EPT_DATA, error_code, no_error)) { - isoc_err("Disabled Isoc EP with error:%d on epid:%d when appending" - " URB:0x%x[%d]\n", - IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data), epid, - (unsigned int)urb, urb_priv->urb_num); - } - - /* The SB list was exhausted. */ - if (virt_to_phys(urb_priv->last_sb) != TxIsocEPList[epid].sub) { - /* The new sublist did not get processed before the EP was - disabled. Setup the EP again. */ - - if(virt_to_phys(temp_sb_desc) == TxIsocEPList[epid].sub) { - isoc_dbg("EP for epid:%d stoped at SB:0x%x before newly inserted" - ", restarting from this URBs SB:0x%x\n", - epid, (unsigned int)temp_sb_desc, - (unsigned int)(urb_priv->first_sb)); - TxIsocEPList[epid].hw_len = 0; - TxIsocEPList[epid].sub = virt_to_phys(urb_priv->first_sb); - urb->start_frame = (*R_USB_FM_NUMBER & 0x7ff); - /* Enable the EP again so data gets processed this time */ - TxIsocEPList[epid].command |= - IO_STATE(USB_EP_command, enable, yes); - - } else { - /* The EP has been disabled but not at end this URB (god knows - where). This should generate an epid_attn so we should not be - here */ - isoc_warn("EP was disabled on sb:0x%x before SB list for" - " URB:0x%x[%d] got processed\n", - (unsigned int)phys_to_virt(TxIsocEPList[epid].sub), - (unsigned int)urb, urb_priv->urb_num); - } - } else { - /* This might happend if we are slow on this function and isn't - an error. */ - isoc_dbg("EP was disabled and finished with SBs from appended" - " URB:0x%x[%d]\n", (unsigned int)urb, urb_priv->urb_num); - } - } - } - } - - /* Start the DMA sub channel */ - *R_DMA_CH8_SUB3_CMD = IO_STATE(R_DMA_CH8_SUB3_CMD, cmd, start); - - local_irq_restore(flags); -} - -static void tc_dma_unlink_intr_urb(struct urb *urb) { - struct crisv10_urb_priv *urb_priv = urb->hcpriv; - volatile struct USB_EP_Desc *first_ep; /* First EP in the list. */ - volatile struct USB_EP_Desc *curr_ep; /* Current EP, the iterator. */ - volatile struct USB_EP_Desc *next_ep; /* The EP after current. */ - volatile struct USB_EP_Desc *unlink_ep; /* The one we should remove from - the list. */ - int count = 0; - volatile int timeout = 10000; - int epid; - - /* Read 8.8.4 in Designer's Reference, "Removing an EP Descriptor from the - List". */ - ASSERT(urb_priv); - ASSERT(urb_priv->intr_ep_pool_length > 0); - epid = urb_priv->epid; - - /* First disable all Intr EPs belonging to epid for this URB */ - first_ep = &TxIntrEPList[0]; - curr_ep = first_ep; - do { - next_ep = (struct USB_EP_Desc *)phys_to_virt(curr_ep->next); - if (IO_EXTRACT(USB_EP_command, epid, next_ep->command) == epid) { - /* Disable EP */ - next_ep->command &= ~IO_MASK(USB_EP_command, enable); - } - curr_ep = phys_to_virt(curr_ep->next); - } while (curr_ep != first_ep); - - - /* Now unlink all EPs belonging to this epid from Descr list */ - first_ep = &TxIntrEPList[0]; - curr_ep = first_ep; - do { - next_ep = (struct USB_EP_Desc *)phys_to_virt(curr_ep->next); - if (IO_EXTRACT(USB_EP_command, epid, next_ep->command) == epid) { - /* This is the one we should unlink. */ - unlink_ep = next_ep; - - /* Actually unlink the EP from the DMA list. */ - curr_ep->next = unlink_ep->next; - - /* Wait until the DMA is no longer at this descriptor. */ - while((*R_DMA_CH8_SUB2_EP == virt_to_phys(unlink_ep)) && - (timeout-- > 0)); - if(timeout == 0) { - warn("Timeout while waiting for DMA-TX-Intr to leave unlink EP\n"); - } - - count++; - } - curr_ep = phys_to_virt(curr_ep->next); - } while (curr_ep != first_ep); - - if(count != urb_priv->intr_ep_pool_length) { - intr_warn("Unlinked %d of %d Intr EPs for URB:0x%x[%d]\n", count, - urb_priv->intr_ep_pool_length, (unsigned int)urb, - urb_priv->urb_num); - } else { - intr_dbg("Unlinked %d of %d interrupt EPs for URB:0x%x\n", count, - urb_priv->intr_ep_pool_length, (unsigned int)urb); - } -} - -static void check_finished_bulk_tx_epids(struct usb_hcd *hcd, - int timer) { - unsigned long flags; - int epid; - struct urb *urb; - struct crisv10_urb_priv * urb_priv; - __u32 epid_data; - - /* Protect TxEPList */ - local_irq_save(flags); - - for (epid = 0; epid < NBR_OF_EPIDS; epid++) { - /* A finished EP descriptor is disabled and has a valid sub pointer */ - if (!(TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) && - (TxBulkEPList[epid].sub != 0)) { - - /* Get the active URB for this epid */ - urb = activeUrbList[epid]; - /* Sanity checks */ - ASSERT(urb); - urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; - ASSERT(urb_priv); - - /* Only handle finished out Bulk EPs here, - and let RX interrupt take care of the rest */ - if(!epid_out_traffic(epid)) { - continue; - } - - if(timer) { - tc_warn("Found finished %s Bulk epid:%d URB:0x%x[%d] from timeout\n", - epid_out_traffic(epid) ? "Out" : "In", epid, (unsigned int)urb, - urb_priv->urb_num); - } else { - tc_dbg("Found finished %s Bulk epid:%d URB:0x%x[%d] from interrupt\n", - epid_out_traffic(epid) ? "Out" : "In", epid, (unsigned int)urb, - urb_priv->urb_num); - } - - if(urb_priv->urb_state == UNLINK) { - /* This Bulk URB is requested to be unlinked, that means that the EP - has been disabled and we might not have sent all data */ - tc_finish_urb(hcd, urb, urb->status); - continue; - } - - ASSERT(urb_priv->urb_state == STARTED); - if (phys_to_virt(TxBulkEPList[epid].sub) != urb_priv->last_sb) { - tc_err("Endpoint got disabled before reaching last sb\n"); - } - - epid_data = etrax_epid_get(epid); - if (IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data) == - IO_STATE_VALUE(R_USB_EPT_DATA, error_code, no_error)) { - /* This means that the endpoint has no error, is disabled - and had inserted traffic, i.e. transfer successfully completed. */ - tc_finish_urb(hcd, urb, 0); - } else { - /* Shouldn't happen. We expect errors to be caught by epid - attention. */ - tc_err("Found disabled bulk EP desc (epid:%d error:%d)\n", - epid, IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data)); - } - } else { - tc_dbg("Ignoring In Bulk epid:%d, let RX interrupt handle it\n", epid); - } - } - - local_irq_restore(flags); -} - -static void check_finished_ctrl_tx_epids(struct usb_hcd *hcd) { - unsigned long flags; - int epid; - struct urb *urb; - struct crisv10_urb_priv * urb_priv; - __u32 epid_data; - - /* Protect TxEPList */ - local_irq_save(flags); - - for (epid = 0; epid < NBR_OF_EPIDS; epid++) { - if(epid == DUMMY_EPID) - continue; - - /* A finished EP descriptor is disabled and has a valid sub pointer */ - if (!(TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable)) && - (TxCtrlEPList[epid].sub != 0)) { - - /* Get the active URB for this epid */ - urb = activeUrbList[epid]; - - if(urb == NULL) { - tc_warn("Found finished Ctrl epid:%d with no active URB\n", epid); - continue; - } - - /* Sanity checks */ - ASSERT(usb_pipein(urb->pipe)); - urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; - ASSERT(urb_priv); - if (phys_to_virt(TxCtrlEPList[epid].sub) != urb_priv->last_sb) { - tc_err("Endpoint got disabled before reaching last sb\n"); - } - - epid_data = etrax_epid_get(epid); - if (IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data) == - IO_STATE_VALUE(R_USB_EPT_DATA, error_code, no_error)) { - /* This means that the endpoint has no error, is disabled - and had inserted traffic, i.e. transfer successfully completed. */ - - /* Check if RX-interrupt for In Ctrl has been processed before - finishing the URB */ - if(urb_priv->ctrl_rx_done) { - tc_dbg("Finishing In Ctrl URB:0x%x[%d] in tx_interrupt\n", - (unsigned int)urb, urb_priv->urb_num); - tc_finish_urb(hcd, urb, 0); - } else { - /* If we get zout descriptor interrupt before RX was done for a - In Ctrl transfer, then we flag that and it will be finished - in the RX-Interrupt */ - urb_priv->ctrl_zout_done = 1; - tc_dbg("Got zout descr interrupt before RX interrupt\n"); - } - } else { - /* Shouldn't happen. We expect errors to be caught by epid - attention. */ - tc_err("Found disabled Ctrl EP desc (epid:%d URB:0x%x[%d]) error_code:%d\n", epid, (unsigned int)urb, urb_priv->urb_num, IO_EXTRACT(R_USB_EPT_DATA, error_code, epid_data)); - __dump_ep_desc(&(TxCtrlEPList[epid])); - __dump_ept_data(epid); - } - } - } - local_irq_restore(flags); -} - -/* This function goes through all epids that are setup for Out Isoc transfers - and marks (isoc_out_done) all queued URBs that the DMA has finished - transfer for. - No URB completetion is done here to make interrupt routine return quickly. - URBs are completed later with help of complete_isoc_bottom_half() that - becomes schedules when this functions is finished. */ -static void check_finished_isoc_tx_epids(void) { - unsigned long flags; - int epid; - struct urb *urb; - struct crisv10_urb_priv * urb_priv; - struct USB_SB_Desc* sb_desc; - int epid_done; - - /* Protect TxIsocEPList */ - local_irq_save(flags); - - for (epid = 0; epid < NBR_OF_EPIDS; epid++) { - if (TxIsocEPList[epid].sub == 0 || epid == INVALID_EPID || - !epid_out_traffic(epid)) { - /* Nothing here to see. */ - continue; - } - ASSERT(epid_inuse(epid)); - ASSERT(epid_isoc(epid)); - - sb_desc = phys_to_virt(TxIsocEPList[epid].sub); - /* Find the last descriptor of the currently active URB for this ep. - This is the first descriptor in the sub list marked for a descriptor - interrupt. */ - while (sb_desc && !IO_EXTRACT(USB_SB_command, intr, sb_desc->command)) { - sb_desc = sb_desc->next ? phys_to_virt(sb_desc->next) : 0; - } - ASSERT(sb_desc); - - isoc_dbg("Descr IRQ checking epid:%d sub:0x%x intr:0x%x\n", - epid, (unsigned int)phys_to_virt(TxIsocEPList[epid].sub), - (unsigned int)sb_desc); - - urb = activeUrbList[epid]; - if(urb == NULL) { - isoc_err("Isoc Descr irq on epid:%d with no active URB\n", epid); - continue; - } - - epid_done = 0; - while(urb && !epid_done) { - /* Sanity check. */ - ASSERT(usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS); - ASSERT(usb_pipeout(urb->pipe)); - - urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; - ASSERT(urb_priv); - ASSERT(urb_priv->urb_state == STARTED || - urb_priv->urb_state == UNLINK); - - if (sb_desc != urb_priv->last_sb) { - /* This urb has been sent. */ - urb_priv->isoc_out_done = 1; - - } else { /* Found URB that has last_sb as the interrupt reason */ - - /* Check if EP has been disabled, meaning that all transfers are done*/ - if(!(TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable))) { - ASSERT((sb_desc->command & IO_MASK(USB_SB_command, eol)) == - IO_STATE(USB_SB_command, eol, yes)); - ASSERT(sb_desc->next == 0); - urb_priv->isoc_out_done = 1; - } else { - isoc_dbg("Skipping URB:0x%x[%d] because EP not disabled yet\n", - (unsigned int)urb, urb_priv->urb_num); - } - /* Stop looking any further in queue */ - epid_done = 1; - } - - if (!epid_done) { - if(urb == activeUrbList[epid]) { - urb = urb_list_first(epid); - } else { - urb = urb_list_next(urb, epid); - } - } - } /* END: while(urb && !epid_done) */ - } - - local_irq_restore(flags); -} - - -/* This is where the Out Isoc URBs are realy completed. This function is - scheduled from tc_dma_tx_interrupt() when one or more Out Isoc transfers - are done. This functions completes all URBs earlier marked with - isoc_out_done by fast interrupt routine check_finished_isoc_tx_epids() */ - -static void complete_isoc_bottom_half(struct work_struct* work) { - struct crisv10_isoc_complete_data *comp_data; - struct usb_iso_packet_descriptor *packet; - struct crisv10_urb_priv * urb_priv; - unsigned long flags; - struct urb* urb; - int epid_done; - int epid; - int i; - - comp_data = container_of(work, struct crisv10_isoc_complete_data, usb_bh); - - local_irq_save(flags); - - for (epid = 0; epid < NBR_OF_EPIDS - 1; epid++) { - if(!epid_inuse(epid) || !epid_isoc(epid) || !epid_out_traffic(epid) || epid == DUMMY_EPID) { - /* Only check valid Out Isoc epids */ - continue; - } - - isoc_dbg("Isoc bottom-half checking epid:%d, sub:0x%x\n", epid, - (unsigned int)phys_to_virt(TxIsocEPList[epid].sub)); - - /* The descriptor interrupt handler has marked all transmitted Out Isoc - URBs with isoc_out_done. Now we traverse all epids and for all that - have out Isoc traffic we traverse its URB list and complete the - transmitted URBs. */ - epid_done = 0; - while (!epid_done) { - - /* Get the active urb (if any) */ - urb = activeUrbList[epid]; - if (urb == 0) { - isoc_dbg("No active URB on epid:%d anymore\n", epid); - epid_done = 1; - continue; - } - - /* Sanity check. */ - ASSERT(usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS); - ASSERT(usb_pipeout(urb->pipe)); - - urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; - ASSERT(urb_priv); - - if (!(urb_priv->isoc_out_done)) { - /* We have reached URB that isn't flaged done yet, stop traversing. */ - isoc_dbg("Stoped traversing Out Isoc URBs on epid:%d" - " before not yet flaged URB:0x%x[%d]\n", - epid, (unsigned int)urb, urb_priv->urb_num); - epid_done = 1; - continue; - } - - /* This urb has been sent. */ - isoc_dbg("Found URB:0x%x[%d] that is flaged isoc_out_done\n", - (unsigned int)urb, urb_priv->urb_num); - - /* Set ok on transfered packets for this URB and finish it */ - for (i = 0; i < urb->number_of_packets; i++) { - packet = &urb->iso_frame_desc[i]; - packet->status = 0; - packet->actual_length = packet->length; - } - urb_priv->isoc_packet_counter = urb->number_of_packets; - tc_finish_urb(comp_data->hcd, urb, 0); - - } /* END: while(!epid_done) */ - } /* END: for(epid...) */ - - local_irq_restore(flags); - kmem_cache_free(isoc_compl_cache, comp_data); -} - - -static void check_finished_intr_tx_epids(struct usb_hcd *hcd) { - unsigned long flags; - int epid; - struct urb *urb; - struct crisv10_urb_priv * urb_priv; - volatile struct USB_EP_Desc *curr_ep; /* Current EP, the iterator. */ - volatile struct USB_EP_Desc *next_ep; /* The EP after current. */ - - /* Protect TxintrEPList */ - local_irq_save(flags); - - for (epid = 0; epid < NBR_OF_EPIDS; epid++) { - if(!epid_inuse(epid) || !epid_intr(epid) || !epid_out_traffic(epid)) { - /* Nothing to see on this epid. Only check valid Out Intr epids */ - continue; - } - - urb = activeUrbList[epid]; - if(urb == 0) { - intr_warn("Found Out Intr epid:%d with no active URB\n", epid); - continue; - } - - /* Sanity check. */ - ASSERT(usb_pipetype(urb->pipe) == PIPE_INTERRUPT); - ASSERT(usb_pipeout(urb->pipe)); - - urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; - ASSERT(urb_priv); - - /* Go through EPs between first and second sof-EP. It's here Out Intr EPs - are inserted.*/ - curr_ep = &TxIntrEPList[0]; - do { - next_ep = (struct USB_EP_Desc *)phys_to_virt(curr_ep->next); - if(next_ep == urb_priv->intr_ep_pool[0]) { - /* We found the Out Intr EP for this epid */ - - /* Disable it so it doesn't get processed again */ - next_ep->command &= ~IO_MASK(USB_EP_command, enable); - - /* Finish the active Out Intr URB with status OK */ - tc_finish_urb(hcd, urb, 0); - } - curr_ep = phys_to_virt(curr_ep->next); - } while (curr_ep != &TxIntrEPList[1]); - - } - local_irq_restore(flags); -} - -/* Interrupt handler for DMA8/IRQ24 with subchannels (called from hardware intr) */ -static irqreturn_t tc_dma_tx_interrupt(int irq, void *vhc) { - struct usb_hcd *hcd = (struct usb_hcd*)vhc; - ASSERT(hcd); - - if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub0_descr)) { - /* Clear this interrupt */ - *R_DMA_CH8_SUB0_CLR_INTR = IO_STATE(R_DMA_CH8_SUB0_CLR_INTR, clr_descr, do); - restart_dma8_sub0(); - } - - if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub1_descr)) { - /* Clear this interrupt */ - *R_DMA_CH8_SUB1_CLR_INTR = IO_STATE(R_DMA_CH8_SUB1_CLR_INTR, clr_descr, do); - check_finished_ctrl_tx_epids(hcd); - } - - if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub2_descr)) { - /* Clear this interrupt */ - *R_DMA_CH8_SUB2_CLR_INTR = IO_STATE(R_DMA_CH8_SUB2_CLR_INTR, clr_descr, do); - check_finished_intr_tx_epids(hcd); - } - - if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub3_descr)) { - struct crisv10_isoc_complete_data* comp_data; - - /* Flag done Out Isoc for later completion */ - check_finished_isoc_tx_epids(); - - /* Clear this interrupt */ - *R_DMA_CH8_SUB3_CLR_INTR = IO_STATE(R_DMA_CH8_SUB3_CLR_INTR, clr_descr, do); - /* Schedule bottom half of Out Isoc completion function. This function - finishes the URBs marked with isoc_out_done */ - comp_data = (struct crisv10_isoc_complete_data*) - kmem_cache_alloc(isoc_compl_cache, GFP_ATOMIC); - ASSERT(comp_data != NULL); - comp_data ->hcd = hcd; - - INIT_WORK(&comp_data->usb_bh, complete_isoc_bottom_half); - schedule_work(&comp_data->usb_bh); - } - - return IRQ_HANDLED; -} - -/* Interrupt handler for DMA9/IRQ25 (called from hardware intr) */ -static irqreturn_t tc_dma_rx_interrupt(int irq, void *vhc) { - unsigned long flags; - struct urb *urb; - struct usb_hcd *hcd = (struct usb_hcd*)vhc; - struct crisv10_urb_priv *urb_priv; - int epid = 0; - int real_error; - - ASSERT(hcd); - - /* Clear this interrupt. */ - *R_DMA_CH9_CLR_INTR = IO_STATE(R_DMA_CH9_CLR_INTR, clr_eop, do); - - /* Custom clear interrupt for this interrupt */ - /* The reason we cli here is that we call the driver's callback functions. */ - local_irq_save(flags); - - /* Note that this while loop assumes that all packets span only - one rx descriptor. */ - while(myNextRxDesc->status & IO_MASK(USB_IN_status, eop)) { - epid = IO_EXTRACT(USB_IN_status, epid, myNextRxDesc->status); - /* Get the active URB for this epid */ - urb = activeUrbList[epid]; - - ASSERT(epid_inuse(epid)); - if (!urb) { - dma_err("No urb for epid %d in rx interrupt\n", epid); - goto skip_out; - } - - /* Check if any errors on epid */ - real_error = 0; - if (myNextRxDesc->status & IO_MASK(USB_IN_status, error)) { - __u32 r_usb_ept_data; - - if (usb_pipeisoc(urb->pipe)) { - r_usb_ept_data = etrax_epid_iso_get(epid); - if((r_usb_ept_data & IO_MASK(R_USB_EPT_DATA_ISO, valid)) && - (IO_EXTRACT(R_USB_EPT_DATA_ISO, error_code, r_usb_ept_data) == 0) && - (myNextRxDesc->status & IO_MASK(USB_IN_status, nodata))) { - /* Not an error, just a failure to receive an expected iso - in packet in this frame. This is not documented - in the designers reference. Continue processing. - */ - } else real_error = 1; - } else real_error = 1; - } - - if(real_error) { - dma_err("Error in RX descr on epid:%d for URB 0x%x", - epid, (unsigned int)urb); - dump_ept_data(epid); - dump_in_desc(myNextRxDesc); - goto skip_out; - } - - urb_priv = (struct crisv10_urb_priv *)urb->hcpriv; - ASSERT(urb_priv); - ASSERT(urb_priv->urb_state == STARTED || - urb_priv->urb_state == UNLINK); - - if ((usb_pipetype(urb->pipe) == PIPE_BULK) || - (usb_pipetype(urb->pipe) == PIPE_CONTROL) || - (usb_pipetype(urb->pipe) == PIPE_INTERRUPT)) { - - /* We get nodata for empty data transactions, and the rx descriptor's - hw_len field is not valid in that case. No data to copy in other - words. */ - if (myNextRxDesc->status & IO_MASK(USB_IN_status, nodata)) { - /* No data to copy */ - } else { - /* - dma_dbg("Processing RX for URB:0x%x epid:%d (data:%d ofs:%d)\n", - (unsigned int)urb, epid, myNextRxDesc->hw_len, - urb_priv->rx_offset); - */ - /* Only copy data if URB isn't flaged to be unlinked*/ - if(urb_priv->urb_state != UNLINK) { - /* Make sure the data fits in the buffer. */ - if(urb_priv->rx_offset + myNextRxDesc->hw_len - <= urb->transfer_buffer_length) { - - /* Copy the data to URBs buffer */ - memcpy(urb->transfer_buffer + urb_priv->rx_offset, - phys_to_virt(myNextRxDesc->buf), myNextRxDesc->hw_len); - urb_priv->rx_offset += myNextRxDesc->hw_len; - } else { - /* Signal overflow when returning URB */ - urb->status = -EOVERFLOW; - tc_finish_urb_later(hcd, urb, urb->status); - } - } - } - - /* Check if it was the last packet in the transfer */ - if (myNextRxDesc->status & IO_MASK(USB_IN_status, eot)) { - /* Special handling for In Ctrl URBs. */ - if(usb_pipecontrol(urb->pipe) && usb_pipein(urb->pipe) && - !(urb_priv->ctrl_zout_done)) { - /* Flag that RX part of Ctrl transfer is done. Because zout descr - interrupt hasn't happend yet will the URB be finished in the - TX-Interrupt. */ - urb_priv->ctrl_rx_done = 1; - tc_dbg("Not finishing In Ctrl URB:0x%x from rx_interrupt, waiting" - " for zout\n", (unsigned int)urb); - } else { - tc_finish_urb(hcd, urb, 0); - } - } - } else { /* ISOC RX */ - /* - isoc_dbg("Processing RX for epid:%d (URB:0x%x) ISOC pipe\n", - epid, (unsigned int)urb); - */ - - struct usb_iso_packet_descriptor *packet; - - if (urb_priv->urb_state == UNLINK) { - isoc_warn("Ignoring Isoc Rx data for urb being unlinked.\n"); - goto skip_out; - } else if (urb_priv->urb_state == NOT_STARTED) { - isoc_err("What? Got Rx data for Isoc urb that isn't started?\n"); - goto skip_out; - } - - packet = &urb->iso_frame_desc[urb_priv->isoc_packet_counter]; - ASSERT(packet); - packet->status = 0; - - if (myNextRxDesc->status & IO_MASK(USB_IN_status, nodata)) { - /* We get nodata for empty data transactions, and the rx descriptor's - hw_len field is not valid in that case. We copy 0 bytes however to - stay in synch. */ - packet->actual_length = 0; - } else { - packet->actual_length = myNextRxDesc->hw_len; - /* Make sure the data fits in the buffer. */ - ASSERT(packet->actual_length <= packet->length); - memcpy(urb->transfer_buffer + packet->offset, - phys_to_virt(myNextRxDesc->buf), packet->actual_length); - if(packet->actual_length > 0) - isoc_dbg("Copied %d bytes, packet %d for URB:0x%x[%d]\n", - packet->actual_length, urb_priv->isoc_packet_counter, - (unsigned int)urb, urb_priv->urb_num); - } - - /* Increment the packet counter. */ - urb_priv->isoc_packet_counter++; - - /* Note that we don't care about the eot field in the rx descriptor's - status. It will always be set for isoc traffic. */ - if (urb->number_of_packets == urb_priv->isoc_packet_counter) { - /* Complete the urb with status OK. */ - tc_finish_urb(hcd, urb, 0); - } - } - - skip_out: - myNextRxDesc->status = 0; - myNextRxDesc->command |= IO_MASK(USB_IN_command, eol); - myLastRxDesc->command &= ~IO_MASK(USB_IN_command, eol); - myLastRxDesc = myNextRxDesc; - myNextRxDesc = phys_to_virt(myNextRxDesc->next); - flush_etrax_cache(); - *R_DMA_CH9_CMD = IO_STATE(R_DMA_CH9_CMD, cmd, restart); - } - - local_irq_restore(flags); - - return IRQ_HANDLED; -} - -static void tc_bulk_start_timer_func(unsigned long dummy) { - /* We might enable an EP descriptor behind the current DMA position when - it's about to decide that there are no more bulk traffic and it should - stop the bulk channel. - Therefore we periodically check if the bulk channel is stopped and there - is an enabled bulk EP descriptor, in which case we start the bulk - channel. */ - - if (!(*R_DMA_CH8_SUB0_CMD & IO_MASK(R_DMA_CH8_SUB0_CMD, cmd))) { - int epid; - - timer_dbg("bulk_start_timer: Bulk DMA channel not running.\n"); - - for (epid = 0; epid < NBR_OF_EPIDS; epid++) { - if (TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) { - timer_warn("Found enabled EP for epid %d, starting bulk channel.\n", - epid); - restart_dma8_sub0(); - - /* Restart the bulk eot timer since we just started the bulk channel.*/ - mod_timer(&bulk_eot_timer, jiffies + BULK_EOT_TIMER_INTERVAL); - - /* No need to search any further. */ - break; - } - } - } else { - timer_dbg("bulk_start_timer: Bulk DMA channel running.\n"); - } -} - -static void tc_bulk_eot_timer_func(unsigned long dummy) { - struct usb_hcd *hcd = (struct usb_hcd*)dummy; - ASSERT(hcd); - /* Because of a race condition in the top half, we might miss a bulk eot. - This timer "simulates" a bulk eot if we don't get one for a while, - hopefully correcting the situation. */ - timer_dbg("bulk_eot_timer timed out.\n"); - check_finished_bulk_tx_epids(hcd, 1); -} - - -/*************************************************************/ -/*************************************************************/ -/* Device driver block */ -/*************************************************************/ -/*************************************************************/ - -/* Forward declarations for device driver functions */ -static int devdrv_hcd_probe(struct device *); -static int devdrv_hcd_remove(struct device *); -#ifdef CONFIG_PM -static int devdrv_hcd_suspend(struct device *, u32, u32); -static int devdrv_hcd_resume(struct device *, u32); -#endif /* CONFIG_PM */ - -/* the device */ -static struct platform_device *devdrv_hc_platform_device; - -/* device driver interface */ -static struct device_driver devdrv_hc_device_driver = { - .name = (char *) hc_name, - .bus = &platform_bus_type, - - .probe = devdrv_hcd_probe, - .remove = devdrv_hcd_remove, - -#ifdef CONFIG_PM - .suspend = devdrv_hcd_suspend, - .resume = devdrv_hcd_resume, -#endif /* CONFIG_PM */ -}; - -/* initialize the host controller and driver */ -static int __init_or_module devdrv_hcd_probe(struct device *dev) -{ - struct usb_hcd *hcd; - struct crisv10_hcd *crisv10_hcd; - int retval; - - /* Check DMA burst length */ - if(IO_EXTRACT(R_BUS_CONFIG, dma_burst, *R_BUS_CONFIG) != - IO_STATE(R_BUS_CONFIG, dma_burst, burst32)) { - devdrv_err("Invalid DMA burst length in Etrax 100LX," - " needs to be 32\n"); - return -EPERM; - } - - hcd = usb_create_hcd(&crisv10_hc_driver, dev, dev->bus_id); - if (!hcd) - return -ENOMEM; - - crisv10_hcd = hcd_to_crisv10_hcd(hcd); - spin_lock_init(&crisv10_hcd->lock); - crisv10_hcd->num_ports = num_ports(); - crisv10_hcd->running = 0; - - dev_set_drvdata(dev, crisv10_hcd); - - devdrv_dbg("ETRAX USB IRQs HC:%d RX:%d TX:%d\n", ETRAX_USB_HC_IRQ, - ETRAX_USB_RX_IRQ, ETRAX_USB_TX_IRQ); - - /* Print out chip version read from registers */ - int rev_maj = *R_USB_REVISION & IO_MASK(R_USB_REVISION, major); - int rev_min = *R_USB_REVISION & IO_MASK(R_USB_REVISION, minor); - if(rev_min == 0) { - devdrv_info("Etrax 100LX USB Revision %d v1,2\n", rev_maj); - } else { - devdrv_info("Etrax 100LX USB Revision %d v%d\n", rev_maj, rev_min); - } - - devdrv_info("Bulk timer interval, start:%d eot:%d\n", - BULK_START_TIMER_INTERVAL, - BULK_EOT_TIMER_INTERVAL); - - - /* Init root hub data structures */ - if(rh_init()) { - devdrv_err("Failed init data for Root Hub\n"); - retval = -ENOMEM; - } - - if(port_in_use(0)) { - if (cris_request_io_interface(if_usb_1, "ETRAX100LX USB-HCD")) { - printk(KERN_CRIT "usb-host: request IO interface usb1 failed"); - retval = -EBUSY; - goto out; - } - devdrv_info("Claimed interface for USB physical port 1\n"); - } - if(port_in_use(1)) { - if (cris_request_io_interface(if_usb_2, "ETRAX100LX USB-HCD")) { - /* Free first interface if second failed to be claimed */ - if(port_in_use(0)) { - cris_free_io_interface(if_usb_1); - } - printk(KERN_CRIT "usb-host: request IO interface usb2 failed"); - retval = -EBUSY; - goto out; - } - devdrv_info("Claimed interface for USB physical port 2\n"); - } - - /* Init transfer controller structs and locks */ - if((retval = tc_init(hcd)) != 0) { - goto out; - } - - /* Attach interrupt functions for DMA and init DMA controller */ - if((retval = tc_dma_init(hcd)) != 0) { - goto out; - } - - /* Attach the top IRQ handler for USB controller interrupts */ - if (request_irq(ETRAX_USB_HC_IRQ, crisv10_hcd_top_irq, 0, - "ETRAX 100LX built-in USB (HC)", hcd)) { - err("Could not allocate IRQ %d for USB", ETRAX_USB_HC_IRQ); - retval = -EBUSY; - goto out; - } - - /* iso_eof is only enabled when isoc traffic is running. */ - *R_USB_IRQ_MASK_SET = - /* IO_STATE(R_USB_IRQ_MASK_SET, iso_eof, set) | */ - IO_STATE(R_USB_IRQ_MASK_SET, bulk_eot, set) | - IO_STATE(R_USB_IRQ_MASK_SET, epid_attn, set) | - IO_STATE(R_USB_IRQ_MASK_SET, port_status, set) | - IO_STATE(R_USB_IRQ_MASK_SET, ctl_status, set); - - - crisv10_ready_wait(); - /* Reset the USB interface. */ - *R_USB_COMMAND = - IO_STATE(R_USB_COMMAND, port_sel, nop) | - IO_STATE(R_USB_COMMAND, port_cmd, reset) | - IO_STATE(R_USB_COMMAND, ctrl_cmd, reset); - - /* Designer's Reference, p. 8 - 10 says we should Initate R_USB_FM_PSTART to - 0x2A30 (10800), to guarantee that control traffic gets 10% of the - bandwidth, and periodic transfer may allocate the rest (90%). - This doesn't work though. - The value 11960 is chosen to be just after the SOF token, with a couple - of bit times extra for possible bit stuffing. */ - *R_USB_FM_PSTART = IO_FIELD(R_USB_FM_PSTART, value, 11960); - - crisv10_ready_wait(); - /* Configure the USB interface as a host controller. */ - *R_USB_COMMAND = - IO_STATE(R_USB_COMMAND, port_sel, nop) | - IO_STATE(R_USB_COMMAND, port_cmd, reset) | - IO_STATE(R_USB_COMMAND, ctrl_cmd, host_config); - - - /* Check so controller not busy before enabling ports */ - crisv10_ready_wait(); - - /* Enable selected USB ports */ - if(port_in_use(0)) { - *R_USB_PORT1_DISABLE = IO_STATE(R_USB_PORT1_DISABLE, disable, no); - } else { - *R_USB_PORT1_DISABLE = IO_STATE(R_USB_PORT1_DISABLE, disable, yes); - } - if(port_in_use(1)) { - *R_USB_PORT2_DISABLE = IO_STATE(R_USB_PORT2_DISABLE, disable, no); - } else { - *R_USB_PORT2_DISABLE = IO_STATE(R_USB_PORT2_DISABLE, disable, yes); - } - - crisv10_ready_wait(); - /* Start processing of USB traffic. */ - *R_USB_COMMAND = - IO_STATE(R_USB_COMMAND, port_sel, nop) | - IO_STATE(R_USB_COMMAND, port_cmd, reset) | - IO_STATE(R_USB_COMMAND, ctrl_cmd, host_run); - - /* Do not continue probing initialization before USB interface is done */ - crisv10_ready_wait(); - - /* Register our Host Controller to USB Core - * Finish the remaining parts of generic HCD initialization: allocate the - * buffers of consistent memory, register the bus - * and call the driver's reset() and start() routines. */ - retval = usb_add_hcd(hcd, ETRAX_USB_HC_IRQ, IRQF_DISABLED); - if (retval != 0) { - devdrv_err("Failed registering HCD driver\n"); - goto out; - } - - return 0; - - out: - devdrv_hcd_remove(dev); - return retval; -} - - -/* cleanup after the host controller and driver */ -static int __init_or_module devdrv_hcd_remove(struct device *dev) -{ - struct crisv10_hcd *crisv10_hcd = dev_get_drvdata(dev); - struct usb_hcd *hcd; - - if (!crisv10_hcd) - return 0; - hcd = crisv10_hcd_to_hcd(crisv10_hcd); - - - /* Stop USB Controller in Etrax 100LX */ - crisv10_hcd_reset(hcd); - - usb_remove_hcd(hcd); - devdrv_dbg("Removed HCD from USB Core\n"); - - /* Free USB Controller IRQ */ - free_irq(ETRAX_USB_HC_IRQ, NULL); - - /* Free resources */ - tc_dma_destroy(); - tc_destroy(); - - - if(port_in_use(0)) { - cris_free_io_interface(if_usb_1); - } - if(port_in_use(1)) { - cris_free_io_interface(if_usb_2); - } - - devdrv_dbg("Freed all claimed resources\n"); - - return 0; -} - - -#ifdef CONFIG_PM - -static int devdrv_hcd_suspend(struct usb_hcd *hcd, u32 state, u32 level) -{ - return 0; /* no-op for now */ -} - -static int devdrv_hcd_resume(struct usb_hcd *hcd, u32 level) -{ - return 0; /* no-op for now */ -} - -#endif /* CONFIG_PM */ - - -/*************************************************************/ -/*************************************************************/ -/* Module block */ -/*************************************************************/ -/*************************************************************/ - -/* register driver */ -static int __init module_hcd_init(void) -{ - - if (usb_disabled()) - return -ENODEV; - - /* Here we select enabled ports by following defines created from - menuconfig */ -#ifndef CONFIG_ETRAX_USB_HOST_PORT1 - ports &= ~(1<<0); -#endif -#ifndef CONFIG_ETRAX_USB_HOST_PORT2 - ports &= ~(1<<1); -#endif - - printk(KERN_INFO "%s version "VERSION" "COPYRIGHT"\n", product_desc); - - devdrv_hc_platform_device = - platform_device_register_simple((char *) hc_name, 0, NULL, 0); - - if (IS_ERR(devdrv_hc_platform_device)) - return PTR_ERR(devdrv_hc_platform_device); - return driver_register(&devdrv_hc_device_driver); - /* - * Note that we do not set the DMA mask for the device, - * i.e. we pretend that we will use PIO, since no specific - * allocation routines are needed for DMA buffers. This will - * cause the HCD buffer allocation routines to fall back to - * kmalloc(). - */ -} - -/* unregister driver */ -static void __exit module_hcd_exit(void) -{ - driver_unregister(&devdrv_hc_device_driver); -} - - -/* Module hooks */ -module_init(module_hcd_init); -module_exit(module_hcd_exit); diff --git a/target/linux/etrax/files-2.6.25/drivers/usb/host/hc-crisv10.h b/target/linux/etrax/files-2.6.25/drivers/usb/host/hc-crisv10.h deleted file mode 100644 index 58a0b62..0000000 --- a/target/linux/etrax/files-2.6.25/drivers/usb/host/hc-crisv10.h +++ /dev/null @@ -1,333 +0,0 @@ -#ifndef __LINUX_ETRAX_USB_H -#define __LINUX_ETRAX_USB_H - -#include <linux/types.h> -#include <linux/list.h> - -struct USB_IN_Desc { - volatile __u16 sw_len; - volatile __u16 command; - volatile unsigned long next; - volatile unsigned long buf; - volatile __u16 hw_len; - volatile __u16 status; -}; - -struct USB_SB_Desc { - volatile __u16 sw_len; - volatile __u16 command; - volatile unsigned long next; - volatile unsigned long buf; -}; - -struct USB_EP_Desc { - volatile __u16 hw_len; - volatile __u16 command; - volatile unsigned long sub; - volatile unsigned long next; -}; - - -/* Root Hub port status struct */ -struct crisv10_rh { - volatile __u16 wPortChange[2]; - volatile __u16 wPortStatusPrev[2]; -}; - -/* HCD description */ -struct crisv10_hcd { - spinlock_t lock; - __u8 num_ports; - __u8 running; -}; - - -/* Endpoint HC private data description */ -struct crisv10_ep_priv { - int epid; -}; - -/* Additional software state info for a USB Controller epid */ -struct etrax_epid { - __u8 inuse; /* !0 = setup in Etrax and used for a endpoint */ - __u8 disabled; /* !0 = Temporarly disabled to avoid resubmission */ - __u8 type; /* Setup as: PIPE_BULK, PIPE_CONTROL ... */ - __u8 out_traffic; /* !0 = This epid is for out traffic */ -}; - -/* Struct to hold information of scheduled later URB completion */ -struct urb_later_data { - struct delayed_work dws; - struct usb_hcd *hcd; - struct urb *urb; - int urb_num; - int status; -}; - - -typedef enum { - STARTED, - NOT_STARTED, - UNLINK, -} crisv10_urb_state_t; - - -struct crisv10_urb_priv { - /* Sequence number for this URB. Every new submited URB gets this from - a incrementing counter. Used when a URB is scheduled for later finish to - be sure that the intended URB hasn't already been completed (device - drivers has a tendency to reuse URBs once they are completed, causing us - to not be able to single old ones out only based on the URB pointer.) */ - __u32 urb_num; - - /* The first_sb field is used for freeing all SB descriptors belonging - to an urb. The corresponding ep descriptor's sub pointer cannot be - used for this since the DMA advances the sub pointer as it processes - the sb list. */ - struct USB_SB_Desc *first_sb; - - /* The last_sb field referes to the last SB descriptor that belongs to - this urb. This is important to know so we can free the SB descriptors - that ranges between first_sb and last_sb. */ - struct USB_SB_Desc *last_sb; - - /* The rx_offset field is used in ctrl and bulk traffic to keep track - of the offset in the urb's transfer_buffer where incoming data should be - copied to. */ - __u32 rx_offset; - - /* Counter used in isochronous transfers to keep track of the - number of packets received/transmitted. */ - __u32 isoc_packet_counter; - - /* Flag that marks if this Isoc Out URB has finished it's transfer. Used - because several URBs can be finished before list is processed */ - __u8 isoc_out_done; - - /* This field is used to pass information about the urb's current state - between the various interrupt handlers (thus marked volatile). */ - volatile crisv10_urb_state_t urb_state; - - /* In Ctrl transfers consist of (at least) 3 packets: SETUP, IN and ZOUT. - When DMA8 sub-channel 2 has processed the SB list for this sequence we - get a interrupt. We also get a interrupt for In transfers and which - one of these interrupts that comes first depends of data size and device. - To be sure that we have got both interrupts before we complete the URB - we have these to flags that shows which part that has completed. - We can then check when we get one of the interrupts that if the other has - occured it's safe for us to complete the URB, otherwise we set appropriate - flag and do the completion when we get the other interrupt. */ - volatile unsigned char ctrl_zout_done; - volatile unsigned char ctrl_rx_done; - - /* Connection between the submitted urb and ETRAX epid number */ - __u8 epid; - - /* The rx_data_list field is used for periodic traffic, to hold - received data for later processing in the the complete_urb functions, - where the data us copied to the urb's transfer_buffer. Basically, we - use this intermediate storage because we don't know when it's safe to - reuse the transfer_buffer (FIXME?). */ - struct list_head rx_data_list; - - - /* The interval time rounded up to closest 2^N */ - int interval; - - /* Pool of EP descriptors needed if it's a INTR transfer. - Amount of EPs in pool correspons to how many INTR that should - be inserted in TxIntrEPList (max 128, defined by MAX_INTR_INTERVAL) */ - struct USB_EP_Desc* intr_ep_pool[128]; - - /* The mount of EPs allocated for this INTR URB */ - int intr_ep_pool_length; - - /* Pointer to info struct if URB is scheduled to be finished later */ - struct urb_later_data* later_data; - - /* Allocated bandwidth for isochronous and interrupt traffic */ - int bandwidth; -}; - - -/* This struct is for passing data from the top half to the bottom half irq - handlers */ -struct crisv10_irq_reg { - struct usb_hcd* hcd; - __u32 r_usb_epid_attn; - __u8 r_usb_status; - __u16 r_usb_rh_port_status_1; - __u16 r_usb_rh_port_status_2; - __u32 r_usb_irq_mask_read; - __u32 r_usb_fm_number; - struct work_struct usb_bh; -}; - - -/* This struct is for passing data from the isoc top half to the isoc bottom - half. */ -struct crisv10_isoc_complete_data { - struct usb_hcd *hcd; - struct urb *urb; - struct work_struct usb_bh; -}; - -/* Entry item for URB lists for each endpint */ -typedef struct urb_entry -{ - struct urb *urb; - struct list_head list; -} urb_entry_t; - -/* --------------------------------------------------------------------------- - Virtual Root HUB - ------------------------------------------------------------------------- */ -/* destination of request */ -#define RH_INTERFACE 0x01 -#define RH_ENDPOINT 0x02 -#define RH_OTHER 0x03 - -#define RH_CLASS 0x20 -#define RH_VENDOR 0x40 - -/* Requests: bRequest << 8 | bmRequestType */ -#define RH_GET_STATUS 0x0080 -#define RH_CLEAR_FEATURE 0x0100 -#define RH_SET_FEATURE 0x0300 -#define RH_SET_ADDRESS 0x0500 -#define RH_GET_DESCRIPTOR 0x0680 -#define RH_SET_DESCRIPTOR 0x0700 -#define RH_GET_CONFIGURATION 0x0880 -#define RH_SET_CONFIGURATION 0x0900 -#define RH_GET_STATE 0x0280 -#define RH_GET_INTERFACE 0x0A80 -#define RH_SET_INTERFACE 0x0B00 -#define RH_SYNC_FRAME 0x0C80 -/* Our Vendor Specific Request */ -#define RH_SET_EP 0x2000 - - -/* Hub port features */ -#define RH_PORT_CONNECTION 0x00 -#define RH_PORT_ENABLE 0x01 -#define RH_PORT_SUSPEND 0x02 -#define RH_PORT_OVER_CURRENT 0x03 -#define RH_PORT_RESET 0x04 -#define RH_PORT_POWER 0x08 -#define RH_PORT_LOW_SPEED 0x09 -#define RH_C_PORT_CONNECTION 0x10 -#define RH_C_PORT_ENABLE 0x11 -#define RH_C_PORT_SUSPEND 0x12 -#define RH_C_PORT_OVER_CURRENT 0x13 -#define RH_C_PORT_RESET 0x14 - -/* Hub features */ -#define RH_C_HUB_LOCAL_POWER 0x00 -#define RH_C_HUB_OVER_CURRENT 0x01 - -#define RH_DEVICE_REMOTE_WAKEUP 0x00 -#define RH_ENDPOINT_STALL 0x01 - -/* Our Vendor Specific feature */ -#define RH_REMOVE_EP 0x00 - - -#define RH_ACK 0x01 -#define RH_REQ_ERR -1 -#define RH_NACK 0x00 - -/* Field definitions for */ - -#define USB_IN_command__eol__BITNR 0 /* command macros */ -#define USB_IN_command__eol__WIDTH 1 -#define USB_IN_command__eol__no 0 -#define USB_IN_command__eol__yes 1 - -#define USB_IN_command__intr__BITNR 3 -#define USB_IN_command__intr__WIDTH 1 -#define USB_IN_command__intr__no 0 -#define USB_IN_command__intr__yes 1 - -#define USB_IN_status__eop__BITNR 1 /* status macros. */ -#define USB_IN_status__eop__WIDTH 1 -#define USB_IN_status__eop__no 0 -#define USB_IN_status__eop__yes 1 - -#define USB_IN_status__eot__BITNR 5 -#define USB_IN_status__eot__WIDTH 1 -#define USB_IN_status__eot__no 0 -#define USB_IN_status__eot__yes 1 - -#define USB_IN_status__error__BITNR 6 -#define USB_IN_status__error__WIDTH 1 -#define USB_IN_status__error__no 0 -#define USB_IN_status__error__yes 1 - -#define USB_IN_status__nodata__BITNR 7 -#define USB_IN_status__nodata__WIDTH 1 -#define USB_IN_status__nodata__no 0 -#define USB_IN_status__nodata__yes 1 - -#define USB_IN_status__epid__BITNR 8 -#define USB_IN_status__epid__WIDTH 5 - -#define USB_EP_command__eol__BITNR 0 -#define USB_EP_command__eol__WIDTH 1 -#define USB_EP_command__eol__no 0 -#define USB_EP_command__eol__yes 1 - -#define USB_EP_command__eof__BITNR 1 -#define USB_EP_command__eof__WIDTH 1 -#define USB_EP_command__eof__no 0 -#define USB_EP_command__eof__yes 1 - -#define USB_EP_command__intr__BITNR 3 -#define USB_EP_command__intr__WIDTH 1 -#define USB_EP_command__intr__no 0 -#define USB_EP_command__intr__yes 1 - -#define USB_EP_command__enable__BITNR 4 -#define USB_EP_command__enable__WIDTH 1 -#define USB_EP_command__enable__no 0 -#define USB_EP_command__enable__yes 1 - -#define USB_EP_command__hw_valid__BITNR 5 -#define USB_EP_command__hw_valid__WIDTH 1 -#define USB_EP_command__hw_valid__no 0 -#define USB_EP_command__hw_valid__yes 1 - -#define USB_EP_command__epid__BITNR 8 -#define USB_EP_command__epid__WIDTH 5 - -#define USB_SB_command__eol__BITNR 0 /* command macros. */ -#define USB_SB_command__eol__WIDTH 1 -#define USB_SB_command__eol__no 0 -#define USB_SB_command__eol__yes 1 - -#define USB_SB_command__eot__BITNR 1 -#define USB_SB_command__eot__WIDTH 1 -#define USB_SB_command__eot__no 0 -#define USB_SB_command__eot__yes 1 - -#define USB_SB_command__intr__BITNR 3 -#define USB_SB_command__intr__WIDTH 1 -#define USB_SB_command__intr__no 0 -#define USB_SB_command__intr__yes 1 - -#define USB_SB_command__tt__BITNR 4 -#define USB_SB_command__tt__WIDTH 2 -#define USB_SB_command__tt__zout 0 -#define USB_SB_command__tt__in 1 -#define USB_SB_command__tt__out 2 -#define USB_SB_command__tt__setup 3 - - -#define USB_SB_command__rem__BITNR 8 -#define USB_SB_command__rem__WIDTH 6 - -#define USB_SB_command__full__BITNR 6 -#define USB_SB_command__full__WIDTH 1 -#define USB_SB_command__full__no 0 -#define USB_SB_command__full__yes 1 - -#endif diff --git a/target/linux/etrax/patches-2.6.25/013-crisdriver-sysfs.patch b/target/linux/etrax/patches-2.6.25/013-crisdriver-sysfs.patch deleted file mode 100644 index c969468..0000000 --- a/target/linux/etrax/patches-2.6.25/013-crisdriver-sysfs.patch +++ /dev/null @@ -1,74 +0,0 @@ -Index: linux-2.6.25.16/arch/cris/arch-v10/drivers/ds1302.c -=================================================================== ---- linux-2.6.25.16.o/arch/cris/arch-v10/drivers/ds1302.c 2008-10-26 15:54:02.000000000 +0100 -+++ linux-2.6.25.16/arch/cris/arch-v10/drivers/ds1302.c 2008-10-26 15:59:37.000000000 +0100 -@@ -21,6 +21,7 @@ - #include <linux/delay.h> - #include <linux/bcd.h> - #include <linux/capability.h> -+#include <linux/device.h> - - #include <asm/uaccess.h> - #include <asm/system.h> -@@ -489,6 +490,10 @@ - return 0; - } - -+#ifdef CONFIG_SYSFS -+static struct class *rtc_class; -+#endif -+ - static int __init ds1302_register(void) - { - ds1302_init(); -@@ -497,6 +502,12 @@ - ds1302_name, RTC_MAJOR_NR); - return -1; - } -+ #ifdef CONFIG_SYSFS -+ rtc_class = class_create(THIS_MODULE, "rtc"); -+ class_device_create(rtc_class, NULL, MKDEV(RTC_MAJOR_NR, 0), -+ NULL, "rtc"); -+ #endif -+ - return 0; - - } -Index: linux-2.6.25.16/arch/cris/arch-v10/drivers/gpio.c -=================================================================== ---- linux-2.6.25.16.o/arch/cris/arch-v10/drivers/gpio.c 2008-10-26 15:56:28.000000000 +0100 -+++ linux-2.6.25.16/arch/cris/arch-v10/drivers/gpio.c 2008-10-26 15:57:41.000000000 +0100 -@@ -20,6 +20,7 @@ - #include <linux/poll.h> - #include <linux/init.h> - #include <linux/interrupt.h> -+#include <linux/device.h> - - #include <asm/etraxgpio.h> - #include <asm/arch/svinto.h> -@@ -768,6 +769,10 @@ - - /* main driver initialization routine, called from mem.c */ - -+#ifdef CONFIG_SYSFS -+static struct class *gpio_class; -+#endif -+ - static int __init gpio_init(void) - { - int res; -@@ -781,6 +786,13 @@ - return res; - } - -+#ifdef CONFIG_SYSFS -+ gpio_class = class_create(THIS_MODULE, "gpio"); -+ class_device_create(gpio_class, NULL, MKDEV(GPIO_MAJOR, 0), NULL, "gpioa"); -+ class_device_create(gpio_class, NULL, MKDEV(GPIO_MAJOR, 1), NULL, "gpiob"); -+ class_device_create(gpio_class, NULL, MKDEV(GPIO_MAJOR, 2), NULL, "leds"); -+ class_device_create(gpio_class, NULL, MKDEV(GPIO_MAJOR, 3), NULL, "gpiog"); -+#endif - /* Clear all leds */ - #if defined (CONFIG_ETRAX_CSP0_LEDS) || defined (CONFIG_ETRAX_PA_LEDS) || defined (CONFIG_ETRAX_PB_LEDS) - CRIS_LED_NETWORK_SET(0); - diff --git a/target/linux/etrax/patches-2.6.25/100-compile_fixes.patch b/target/linux/etrax/patches-2.6.25/100-compile_fixes.patch deleted file mode 100644 index 2a9fc65..0000000 --- a/target/linux/etrax/patches-2.6.25/100-compile_fixes.patch +++ /dev/null @@ -1,302 +0,0 @@ ---- a/arch/cris/Makefile -+++ b/arch/cris/Makefile -@@ -33,7 +33,7 @@ endif - - LD = $(CROSS_COMPILE)ld -mcrislinux - --OBJCOPYFLAGS := -O binary -R .note -R .comment -S -+OBJCOPYFLAGS := -O binary -R .bss -R .note -R .note.gnu.build-id -R .comment -S - - CPPFLAGS_vmlinux.lds = -DDRAM_VIRTUAL_BASE=0x$(CONFIG_ETRAX_DRAM_VIRTUAL_BASE) - ---- a/arch/cris/arch-v10/boot/Makefile -+++ b/arch/cris/arch-v10/boot/Makefile -@@ -2,9 +2,6 @@ - # arch/cris/arch-v10/boot/Makefile - # - --OBJCOPY = objcopy-cris --OBJCOPYFLAGS = -O binary --remove-section=.bss -- - subdir- := compressed rescue - targets := Image - -@@ -14,7 +11,6 @@ $(obj)/Image: vmlinux FORCE - - $(obj)/compressed/vmlinux: $(obj)/Image FORCE - $(Q)$(MAKE) $(build)=$(obj)/compressed $@ -- $(Q)$(MAKE) $(build)=$(obj)/rescue $(obj)/rescue/rescue.bin - - $(obj)/zImage: $(obj)/compressed/vmlinux - @cp $< $@ ---- a/arch/cris/arch-v10/boot/compressed/Makefile -+++ b/arch/cris/arch-v10/boot/compressed/Makefile -@@ -2,13 +2,9 @@ - # arch/cris/arch-v10/boot/compressed/Makefile - # - --CC = gcc-cris -melf $(LINUXINCLUDE) - ccflags-y += -O2 --LD = ld-cris - ldflags-y += -T $(obj)/decompress.ld - OBJECTS = $(obj)/head.o $(obj)/misc.o --OBJCOPY = objcopy-cris --OBJCOPYFLAGS = -O binary --remove-section=.bss - - quiet_cmd_image = BUILD $@ - cmd_image = cat $(obj)/decompress.bin $(obj)/piggy.gz > $@ -@@ -21,12 +17,6 @@ - $(obj)/decompress.bin: $(obj)/decompress.o FORCE - $(call if_changed,objcopy) - --$(obj)/head.o: $(obj)/head.S .config -- @$(CC) -D__ASSEMBLY__ -traditional -c $< -o $@ -- --$(obj)/misc.o: $(obj)/misc.c .config -- @$(CC) -D__KERNEL__ -c $< -o $@ -- - $(obj)/vmlinux: $(obj)/piggy.gz $(obj)/decompress.bin FORCE - $(call if_changed,image) - ---- a/arch/cris/arch-v10/boot/compressed/decompress.ld -+++ b/arch/cris/arch-v10/boot/compressed/decompress.ld -@@ -1,4 +1,4 @@ --OUTPUT_FORMAT(elf32-us-cris) -+OUTPUT_FORMAT(elf32-cris) - - MEMORY - { ---- a/arch/cris/arch-v10/boot/compressed/head.S -+++ b/arch/cris/arch-v10/boot/compressed/head.S -@@ -10,13 +10,14 @@ - - #define ASSEMBLER_MACROS_ONLY - #include <asm/arch/sv_addr_ag.h> -+#include <linux/autoconf.h> - - #define RAM_INIT_MAGIC 0x56902387 - #define COMMAND_LINE_MAGIC 0x87109563 - - ;; Exported symbols - -- .globl _input_data -+ .globl input_data - - - .text -@@ -26,7 +27,7 @@ - - ;; We need to initialze DRAM registers before we start using the DRAM - -- cmp.d RAM_INIT_MAGIC, r8 ; Already initialized? -+ cmp.d RAM_INIT_MAGIC, $r8 ; Already initialized? - beq dram_init_finished - nop - -@@ -36,91 +37,91 @@ dram_init_finished: - - ;; Initiate the PA and PB ports - -- move.b CONFIG_ETRAX_DEF_R_PORT_PA_DATA, r0 -- move.b r0, [R_PORT_PA_DATA] -+ move.b CONFIG_ETRAX_DEF_R_PORT_PA_DATA, $r0 -+ move.b $r0, [R_PORT_PA_DATA] - -- move.b CONFIG_ETRAX_DEF_R_PORT_PA_DIR, r0 -- move.b r0, [R_PORT_PA_DIR] -+ move.b CONFIG_ETRAX_DEF_R_PORT_PA_DIR, $r0 -+ move.b $r0, [R_PORT_PA_DIR] - -- move.b CONFIG_ETRAX_DEF_R_PORT_PB_DATA, r0 -- move.b r0, [R_PORT_PB_DATA] -+ move.b CONFIG_ETRAX_DEF_R_PORT_PB_DATA, $r0 -+ move.b $r0, [R_PORT_PB_DATA] - -- move.b CONFIG_ETRAX_DEF_R_PORT_PB_DIR, r0 -- move.b r0, [R_PORT_PB_DIR] -+ move.b CONFIG_ETRAX_DEF_R_PORT_PB_DIR, $r0 -+ move.b $r0, [R_PORT_PB_DIR] - - ;; Setup the stack to a suitably high address. - ;; We assume 8 MB is the minimum DRAM in an eLinux - ;; product and put the sp at the top for now. - -- move.d 0x40800000, sp -+ move.d 0x40800000, $sp - - ;; Figure out where the compressed piggyback image is - ;; in the flash (since we wont try to copy it to DRAM - ;; before unpacking). It is at _edata, but in flash. - ;; Use (_edata - basse) as offset to the current PC. - --basse: move.d pc, r5 -- and.d 0x7fffffff, r5 ; strip any non-cache bit -- subq 2, r5 ; compensate for the move.d pc instr -- move.d r5, r0 ; save for later - flash address of 'basse' -- add.d _edata, r5 -- sub.d basse, r5 ; r5 = flash address of '_edata' -+basse: move.d $pc, $r5 -+ and.d 0x7fffffff, $r5 ; strip any non-cache bit -+ subq 2, $r5 ; compensate for the move.d pc instr -+ move.d $r5, $r0 ; save for later - flash address of 'basse' -+ add.d _edata, $r5 -+ sub.d basse, $r5 ; r5 = flash address of '_edata' - - ;; Copy text+data to DRAM - -- move.d basse, r1 ; destination -- move.d _edata, r2 ; end destination --1: move.w [r0+], r3 -- move.w r3, [r1+] -- cmp.d r2, r1 -+ move.d basse, $r1 ; destination -+ move.d _edata, $r2 ; end destination -+1: move.w [$r0+], $r3 -+ move.w $r3, [$r1+] -+ cmp.d $r2, $r1 - bcs 1b - nop - -- move.d r5, [_input_data] ; for the decompressor -+ move.d $r5, [input_data] ; for the decompressor - - - ;; Clear the decompressors BSS (between _edata and _end) - -- moveq 0, r0 -- move.d _edata, r1 -- move.d _end, r2 --1: move.w r0, [r1+] -- cmp.d r2, r1 -+ moveq 0, $r0 -+ move.d _edata, $r1 -+ move.d _end, $r2 -+1: move.w $r0, [$r1+] -+ cmp.d $r2, $r1 - bcs 1b - nop - - ;; Save command line magic and address. -- move.d _cmd_line_magic, $r12 -+ move.d cmd_line_magic, $r12 - move.d $r10, [$r12] -- move.d _cmd_line_addr, $r12 -+ move.d cmd_line_addr, $r12 - move.d $r11, [$r12] - - ;; Do the decompression and save compressed size in _inptr - -- jsr _decompress_kernel -+ jsr decompress_kernel - - ;; Put start address of root partition in r9 so the kernel can use it - ;; when mounting from flash - -- move.d [_input_data], r9 ; flash address of compressed kernel -- add.d [_inptr], r9 ; size of compressed kernel -+ move.d [input_data], $r9 ; flash address of compressed kernel -+ add.d [inptr], $r9 ; size of compressed kernel - - ;; Restore command line magic and address. -- move.d _cmd_line_magic, $r10 -+ move.d cmd_line_magic, $r10 - move.d [$r10], $r10 -- move.d _cmd_line_addr, $r11 -+ move.d cmd_line_addr, $r11 - move.d [$r11], $r11 - - ;; Enter the decompressed kernel -- move.d RAM_INIT_MAGIC, r8 ; Tell kernel that DRAM is initialized -+ move.d RAM_INIT_MAGIC, $r8 ; Tell kernel that DRAM is initialized - jump 0x40004000 ; kernel is linked to this address - - .data - --_input_data: -+input_data: - .dword 0 ; used by the decompressor --_cmd_line_magic: -+cmd_line_magic: - .dword 0 --_cmd_line_addr: -+cmd_line_addr: - .dword 0 - #include "../../lib/hw_settings.S" ---- a/arch/cris/arch-v10/boot/compressed/misc.c -+++ b/arch/cris/arch-v10/boot/compressed/misc.c -@@ -5,7 +5,7 @@ - * adapted for Linux. - * - * malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994 -- * puts by Nick Holloway 1993, better puts by Martin Mares 1995 -+ * putstr by Nick Holloway 1993, better putstr by Martin Mares 1995 - * adaptation for Linux/CRIS Axis Communications AB, 1999 - * - */ -@@ -99,12 +99,12 @@ static void error(char *m); - static void gzip_mark(void **); - static void gzip_release(void **); - --static void puts(const char *); -+static void putstr(const char *); - - /* the "heap" is put directly after the BSS ends, at end */ - --extern int end; --static long free_mem_ptr = (long)&end; -+extern int _end; -+static long free_mem_ptr = (long)&_end; - - #include "../../../../../lib/inflate.c" - -@@ -139,7 +139,7 @@ static void gzip_release(void **ptr) - /* decompressor info and error messages to serial console */ - - static void --puts(const char *s) -+putstr(const char *s) - { - #ifndef CONFIG_ETRAX_DEBUG_PORT_NULL - while(*s) { -@@ -209,9 +209,9 @@ flush_window() - static void - error(char *x) - { -- puts("\n\n"); -- puts(x); -- puts("\n\n -- System halted\n"); -+ putstr("\n\n"); -+ putstr(x); -+ putstr("\n\n -- System halted\n"); - - while(1); /* Halt */ - } -@@ -257,14 +257,7 @@ decompress_kernel() - - makecrc(); - -- __asm__ volatile ("move vr,%0" : "=rm" (revision)); -- if (revision < 10) -- { -- puts("You need an ETRAX 100LX to run linux 2.6\n"); -- while(1); -- } -- -- puts("Uncompressing Linux...\n"); -+ putstr("Uncompressing Linux...\n"); - gunzip(); -- puts("Done. Now booting the kernel.\n"); -+ putstr("Done. Now booting the kernel.\n"); - } ---- a/arch/cris/arch-v10/mm/init.c -+++ b/arch/cris/arch-v10/mm/init.c -@@ -184,6 +184,9 @@ paging_init(void) - - free_area_init_node(0, &contig_page_data, zones_size, PAGE_OFFSET >> PAGE_SHIFT, 0); - } -+void free_initrd_mem(unsigned long start, unsigned long end) -+{ -+} - - /* Initialize remaps of some I/O-ports. It is important that this - * is called before any driver is initialized. diff --git a/target/linux/etrax/patches-2.6.25/101-cris-eth-driver.patch b/target/linux/etrax/patches-2.6.25/101-cris-eth-driver.patch deleted file mode 100644 index 8ffe073..0000000 --- a/target/linux/etrax/patches-2.6.25/101-cris-eth-driver.patch +++ /dev/null @@ -1,11 +0,0 @@ ---- a/drivers/net/cris/eth_v10.c -+++ b/drivers/net/cris/eth_v10.c -@@ -1707,7 +1707,7 @@ e100_set_network_leds(int active) - static void - e100_netpoll(struct net_device* netdev) - { -- e100rxtx_interrupt(NETWORK_DMA_TX_IRQ_NBR, netdev, NULL); -+ e100rxtx_interrupt(NETWORK_DMA_TX_IRQ_NBR, netdev); - } - #endif - diff --git a/target/linux/etrax/patches-2.6.25/102-missing_arch_include.patch b/target/linux/etrax/patches-2.6.25/102-missing_arch_include.patch deleted file mode 100644 index 8955712..0000000 --- a/target/linux/etrax/patches-2.6.25/102-missing_arch_include.patch +++ /dev/null @@ -1,11 +0,0 @@ ---- a/include/asm-cris/Kbuild -+++ b/include/asm-cris/Kbuild -@@ -1,7 +1,6 @@ - include include/asm-generic/Kbuild.asm - --header-$(CONFIG_ETRAX_ARCH_V10) += arch-v10/ --header-$(CONFIG_ETRAX_ARCH_V32) += arch-v32/ -+header-y += arch-v10/ arch-v32/ - - header-y += ethernet.h - header-y += rtc.h diff --git a/target/linux/etrax/patches-2.6.25/200-samsung_flash.patch b/target/linux/etrax/patches-2.6.25/200-samsung_flash.patch deleted file mode 100644 index 5353106..0000000 --- a/target/linux/etrax/patches-2.6.25/200-samsung_flash.patch +++ /dev/null @@ -1,13 +0,0 @@ ---- a/drivers/mtd/chips/cfi_cmdset_0002.c -+++ b/drivers/mtd/chips/cfi_cmdset_0002.c -@@ -297,8 +297,8 @@ struct mtd_info *cfi_cmdset_0002(struct - return NULL; - } - -- if (extp->MajorVersion != '1' || -- (extp->MinorVersion < '0' || extp->MinorVersion > '4')) { -+ if (extp->MajorVersion < '0' || extp->MajorVersion > '3' || -+ (extp->MinorVersion < '0' || extp->MinorVersion > '4')) { - if (cfi->mfr == MANUFACTURER_SAMSUNG && - (extp->MajorVersion == '3' && extp->MinorVersion == '3')) { - printk(KERN_NOTICE " Newer Samsung flash detected, " diff --git a/target/linux/etrax/patches-2.6.25/201-flashsize.patch b/target/linux/etrax/patches-2.6.25/201-flashsize.patch deleted file mode 100644 index 4c4fa81..0000000 --- a/target/linux/etrax/patches-2.6.25/201-flashsize.patch +++ /dev/null @@ -1,88 +0,0 @@ ---- a/arch/cris/arch-v10/lib/hw_settings.S -+++ b/arch/cris/arch-v10/lib/hw_settings.S -@@ -60,3 +60,5 @@ - .dword R_PORT_PB_SET - .dword PB_SET_VALUE - .dword 0 ; No more register values -+ .ascii "ACME_PART_MAGIC" -+ .dword 0xdeadc0de ---- a/arch/cris/arch-v10/drivers/axisflashmap.c -+++ b/arch/cris/arch-v10/drivers/axisflashmap.c -@@ -113,7 +113,7 @@ static struct map_info map_cse1 = { - - /* If no partition-table was found, we use this default-set. */ - #define MAX_PARTITIONS 7 --#define NUM_DEFAULT_PARTITIONS 3 -+#define NUM_DEFAULT_PARTITIONS 2 - - /* - * Default flash size is 2MB. CONFIG_ETRAX_PTABLE_SECTOR is most likely the -@@ -122,19 +122,14 @@ static struct map_info map_cse1 = { - */ - static struct mtd_partition axis_default_partitions[NUM_DEFAULT_PARTITIONS] = { - { -- .name = "boot firmware", -- .size = CONFIG_ETRAX_PTABLE_SECTOR, -- .offset = 0 -- }, -- { - .name = "kernel", -- .size = 0x200000 - (6 * CONFIG_ETRAX_PTABLE_SECTOR), -- .offset = CONFIG_ETRAX_PTABLE_SECTOR -+ .size = 0x00, -+ .offset = 0 - }, - { -- .name = "filesystem", -- .size = 5 * CONFIG_ETRAX_PTABLE_SECTOR, -- .offset = 0x200000 - (5 * CONFIG_ETRAX_PTABLE_SECTOR) -+ .name = "rootfs", -+ .size = 0x200000 , -+ .offset = 0x200000 - } - }; - -@@ -281,6 +276,11 @@ static int __init init_axis_flash(void) - struct partitiontable_entry *ptable; - int use_default_ptable = 1; /* Until proven otherwise. */ - const char pmsg[] = " /dev/flash%d at 0x%08x, size 0x%08x\n"; -+ unsigned int kernel_part_size = 0; -+ unsigned char *flash_mem = (unsigned char*)(FLASH_CACHED_ADDR); -+ unsigned int flash_scan_count = 0; -+ const char *part_magic = "ACME_PART_MAGIC"; -+ unsigned int magic_len = strlen(part_magic); - - if (!(mymtd = flash_probe())) { - /* There's no reason to use this module if no flash chip can -@@ -292,6 +292,31 @@ static int __init init_axis_flash(void) - mymtd->name, mymtd->size); - axisflash_mtd = mymtd; - } -+ /* scan flash to findout where out partition starts */ -+ -+ printk(KERN_INFO "Scanning flash for end of kernel magic\n"); -+ for(flash_scan_count = 0; flash_scan_count < 100000; flash_scan_count++){ -+ if(strncmp(&flash_mem[flash_scan_count], part_magic, magic_len - 1) == 0) -+ { -+ kernel_part_size = flash_mem[flash_scan_count + magic_len ]; -+ kernel_part_size <<= 8; -+ kernel_part_size += flash_mem[flash_scan_count + magic_len + 2]; -+ kernel_part_size <<= 8; -+ kernel_part_size += flash_mem[flash_scan_count + magic_len + 1]; -+ kernel_part_size <<= 8; -+ kernel_part_size += flash_mem[flash_scan_count + magic_len + 3]; -+ printk(KERN_INFO "Kernel ends at 0x%.08X\n", kernel_part_size); -+ flash_scan_count = 1100000; -+ } -+ } -+ -+ -+ if(kernel_part_size){ -+ kernel_part_size = (kernel_part_size & 0xffff0000); -+ axis_default_partitions[0].size = kernel_part_size; -+ axis_default_partitions[1].size = mymtd->size - axis_default_partitions[0].size; -+ axis_default_partitions[1].offset = axis_default_partitions[0].size; -+ } - - if (mymtd) { - mymtd->owner = THIS_MODULE; diff --git a/target/linux/etrax/patches-2.6.25/300-sysfs.patch b/target/linux/etrax/patches-2.6.25/300-sysfs.patch deleted file mode 100644 index a7bebe5..0000000 --- a/target/linux/etrax/patches-2.6.25/300-sysfs.patch +++ /dev/null @@ -1,43 +0,0 @@ ---- a/drivers/serial/crisv10.c -+++ b/drivers/serial/crisv10.c -@@ -27,6 +27,7 @@ static char *serial_version = "$Revision - #include <linux/kernel.h> - #include <linux/mutex.h> - #include <linux/bitops.h> -+#include <linux/device.h> - - #include <asm/io.h> - #include <asm/irq.h> -@@ -4384,6 +4385,7 @@ static const struct tty_operations rs_op - .tiocmset = rs_tiocmset - }; - -+static struct class *rs_class; - static int __init - rs_init(void) - { -@@ -4518,6 +4520,24 @@ rs_init(void) - #endif - #endif /* CONFIG_SVINTO_SIM */ - -+ rs_class = class_create(THIS_MODULE, "rs_tty"); -+#ifdef CONFIG_ETRAX_SERIAL_PORT0 -+ class_device_create(rs_class, NULL, -+ MKDEV(TTY_MAJOR, 64), NULL, "ttyS0"); -+#endif -+#ifdef CONFIG_ETRAX_SERIAL_PORT1 -+ class_device_create(rs_class, NULL, -+ MKDEV(TTY_MAJOR, 65), NULL, "ttyS1"); -+#endif -+#ifdef CONFIG_ETRAX_SERIAL_PORT2 -+ class_device_create(rs_class, NULL, -+ MKDEV(TTY_MAJOR, 66), NULL, "ttyS2"); -+#endif -+#ifdef CONFIG_ETRAX_SERIAL_PORT3 -+ class_device_create(rs_class, NULL, -+ MKDEV(TTY_MAJOR, 67), NULL, "ttyS3"); -+#endif -+ - return 0; - } - diff --git a/target/linux/etrax/patches-2.6.25/301-usb_support.patch b/target/linux/etrax/patches-2.6.25/301-usb_support.patch deleted file mode 100644 index a1c2830..0000000 --- a/target/linux/etrax/patches-2.6.25/301-usb_support.patch +++ /dev/null @@ -1,33 +0,0 @@ -diff -Naur linux-2.6.26/drivers/usb/host/Makefile os/linux-2.6-tag--devboard-R2_20-5/drivers/usb/host/Makefile ---- linux-2.6.26/drivers/usb/host/Makefile 2008-07-13 23:51:29.000000000 +0200 -+++ os/linux-2.6-tag--devboard-R2_20-5/drivers/usb/host/Makefile 2008-08-21 10:39:44.000000000 +0200 -@@ -16,6 +16,7 @@ - obj-$(CONFIG_USB_UHCI_HCD) += uhci-hcd.o - obj-$(CONFIG_USB_SL811_HCD) += sl811-hcd.o - obj-$(CONFIG_USB_SL811_CS) += sl811_cs.o -+obj-$(CONFIG_ETRAX_ARCH_V10) += hc-crisv10.o - obj-$(CONFIG_USB_U132_HCD) += u132-hcd.o - obj-$(CONFIG_USB_R8A66597_HCD) += r8a66597-hcd.o - obj-$(CONFIG_USB_ISP1760_HCD) += isp1760.o -diff -Naur linux-2.6.26/drivers/usb/Kconfig os/linux-2.6-tag--devboard-R2_20-5/drivers/usb/Kconfig ---- linux-2.6.26/drivers/usb/Kconfig 2008-07-13 23:51:29.000000000 +0200 -+++ os/linux-2.6-tag--devboard-R2_20-5/drivers/usb/Kconfig 2008-06-10 11:18:30.000000000 +0200 -@@ -21,6 +21,7 @@ - default y if USB_ARCH_HAS_EHCI - default y if PCMCIA && !M32R # sl811_cs - default y if ARM # SL-811 -+ default y if ETRAXFS - default y if SUPERH # r8a66597-hcd - default PCI - -diff -Naur linux-2.6.26/drivers/usb/Makefile os/linux-2.6-tag--devboard-R2_20-5/drivers/usb/Makefile ---- linux-2.6.26/drivers/usb/Makefile 2008-07-13 23:51:29.000000000 +0200 -+++ os/linux-2.6-tag--devboard-R2_20-5/drivers/usb/Makefile 2008-10-01 10:56:43.000000000 +0200 -@@ -16,6 +16,7 @@ - obj-$(CONFIG_USB_SL811_HCD) += host/ - obj-$(CONFIG_USB_U132_HCD) += host/ - obj-$(CONFIG_USB_R8A66597_HCD) += host/ -+obj-$(CONFIG_ETRAX_USB_HOST) += host/ - - obj-$(CONFIG_USB_C67X00_HCD) += c67x00/ - diff --git a/target/linux/etrax/patches-2.6.25/400-Kconfig_source.patch b/target/linux/etrax/patches-2.6.25/400-Kconfig_source.patch deleted file mode 100644 index 8f5b1a5..0000000 --- a/target/linux/etrax/patches-2.6.25/400-Kconfig_source.patch +++ /dev/null @@ -1,16 +0,0 @@ -Index: linux-2.6.25.20/arch/cris/Kconfig -=================================================================== ---- linux-2.6.25.20.orig/arch/cris/Kconfig 2008-11-10 19:50:34.000000000 +0100 -+++ linux-2.6.25.20/arch/cris/Kconfig 2009-01-30 13:03:46.000000000 +0100 -@@ -660,6 +660,10 @@ - - source "drivers/ide/Kconfig" - -+source "drivers/scsi/Kconfig" -+ -+source "drivers/media/Kconfig" -+ - source "drivers/net/Kconfig" - - source "drivers/i2c/Kconfig" - diff --git a/target/linux/etrax/patches-2.6.25/500-i2c_gvc.patch b/target/linux/etrax/patches-2.6.25/500-i2c_gvc.patch deleted file mode 100644 index 7eed8b2..0000000 --- a/target/linux/etrax/patches-2.6.25/500-i2c_gvc.patch +++ /dev/null @@ -1,45 +0,0 @@ -Index: linux-2.6.25.20/arch/cris/arch-v10/drivers/Kconfig -=================================================================== ---- linux-2.6.25.20.orig/arch/cris/arch-v10/drivers/Kconfig 2009-02-09 09:30:40.000000000 +0100 -+++ linux-2.6.25.20/arch/cris/arch-v10/drivers/Kconfig 2009-02-09 21:23:12.000000000 +0100 -@@ -450,11 +450,18 @@ - i2c_arg = I2C_READARG(STA013_READ_ADDR, reg); - val = ioctl(fd, _IO(ETRAXI2C_IOCTYPE, I2C_READREG), i2c_arg); - -+config ETRAX_I2C_GVC -+ bool "I2C GVC support" -+ depends on ETRAX_ARCH_V10 && !ETRAX_I2C -+ select ETRAX_I2C_USES_PB_NOT_PB_I2C -+ help -+ Enables an I2C driver with Geert Vancompernolle improvement. -+ - # this is true for most products since PB-I2C seems to be somewhat - # flawed.. - config ETRAX_I2C_USES_PB_NOT_PB_I2C - bool "I2C uses PB not PB-I2C" -- depends on ETRAX_I2C -+ depends on ETRAX_I2C || ETRAX_I2C_GVC - help - Select whether to use the special I2C mode in the PB I/O register or - not. This option needs to be selected in order to use some drivers -@@ -478,7 +485,7 @@ - - config ETRAX_I2C_EEPROM - bool "I2C EEPROM (non-volatile RAM) support" -- depends on ETRAX_I2C -+ depends on ETRAX_I2C || ETRAX_I2C_GVC - help - Enables I2C EEPROM (non-volatile RAM) on PB0 and PB1 using the I2C - driver. Select size option: Probed, 2k, 8k, 16k. -Index: linux-2.6.25.20/arch/cris/arch-v10/drivers/Makefile -=================================================================== ---- linux-2.6.25.20.orig/arch/cris/arch-v10/drivers/Makefile 2009-02-09 09:30:41.000000000 +0100 -+++ linux-2.6.25.20/arch/cris/arch-v10/drivers/Makefile 2009-02-09 09:35:39.000000000 +0100 -@@ -4,6 +4,7 @@ - - obj-$(CONFIG_ETRAX_AXISFLASHMAP) += axisflashmap.o - obj-$(CONFIG_ETRAX_I2C) += i2c.o -+obj-$(CONFIG_ETRAX_I2C_GVC) += i2c_gvc.o - obj-$(CONFIG_ETRAX_I2C_EEPROM) += eeprom.o - obj-$(CONFIG_ETRAX_GPIO) += gpio.o - obj-$(CONFIG_ETRAX_DS1302) += ds1302.o |