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authorRod Whitby <rod@whitby.id.au>2008-03-20 12:34:04 +0000
committerRod Whitby <rod@whitby.id.au>2008-03-20 12:34:04 +0000
commit2b5f3d64a358aaf3d26642c718f44a428cfdf2fa (patch)
tree0cec6468d7512ce3aac9dc991bfb22fc5a51fd4a /target/linux/ixp4xx
parent1c5ab37c006453d6290381d9a93d98573b90908b (diff)
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ixp4xx: Update npe driver patch
SVN-Revision: 10633
Diffstat (limited to 'target/linux/ixp4xx')
-rw-r--r--target/linux/ixp4xx/patches-2.6.24/200-npe_driver.patch2610
1 files changed, 1336 insertions, 1274 deletions
diff --git a/target/linux/ixp4xx/patches-2.6.24/200-npe_driver.patch b/target/linux/ixp4xx/patches-2.6.24/200-npe_driver.patch
index 8be7af7..5ec0b99 100644
--- a/target/linux/ixp4xx/patches-2.6.24/200-npe_driver.patch
+++ b/target/linux/ixp4xx/patches-2.6.24/200-npe_driver.patch
@@ -1,1124 +1,3 @@
-diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
-index 4de432e..c4c810b 100644
---- a/arch/arm/kernel/setup.c
-+++ b/arch/arm/kernel/setup.c
-@@ -61,6 +61,7 @@ extern int root_mountflags;
- extern void _stext, _text, _etext, __data_start, _edata, _end;
-
- unsigned int processor_id;
-+EXPORT_SYMBOL(processor_id);
- unsigned int __machine_arch_type;
- EXPORT_SYMBOL(__machine_arch_type);
-
-diff --git a/arch/arm/mach-ixp4xx/Kconfig b/arch/arm/mach-ixp4xx/Kconfig
-index 61b2dfc..e774447 100644
---- a/arch/arm/mach-ixp4xx/Kconfig
-+++ b/arch/arm/mach-ixp4xx/Kconfig
-@@ -189,6 +189,20 @@ config IXP4XX_INDIRECT_PCI
- need to use the indirect method instead. If you don't know
- what you need, leave this option unselected.
-
-+config IXP4XX_QMGR
-+ tristate "IXP4xx Queue Manager support"
-+ help
-+ This driver supports IXP4xx built-in hardware queue manager
-+ and is automatically selected by Ethernet and HSS drivers.
-+
-+config IXP4XX_NPE
-+ tristate "IXP4xx Network Processor Engine support"
-+ select HOTPLUG
-+ select FW_LOADER
-+ help
-+ This driver supports IXP4xx built-in network coprocessors
-+ and is automatically selected by Ethernet and HSS drivers.
-+
- endmenu
-
- endif
-diff --git a/arch/arm/mach-ixp4xx/Makefile b/arch/arm/mach-ixp4xx/Makefile
-index 77e00ad..4bb97e1 100644
---- a/arch/arm/mach-ixp4xx/Makefile
-+++ b/arch/arm/mach-ixp4xx/Makefile
-@@ -30,3 +30,5 @@ obj-$(CONFIG_MACH_GATEWAY7001) += gateway7001-setup.o
- obj-$(CONFIG_MACH_WG302V2) += wg302v2-setup.o
-
- obj-$(CONFIG_PCI) += $(obj-pci-$(CONFIG_PCI)) common-pci.o
-+obj-$(CONFIG_IXP4XX_QMGR) += ixp4xx_qmgr.o
-+obj-$(CONFIG_IXP4XX_NPE) += ixp4xx_npe.o
-diff --git a/arch/arm/mach-ixp4xx/ixdp425-setup.c b/arch/arm/mach-ixp4xx/ixdp425-setup.c
-index d5008d8..10b41c6 100644
---- a/arch/arm/mach-ixp4xx/ixdp425-setup.c
-+++ b/arch/arm/mach-ixp4xx/ixdp425-setup.c
-@@ -177,6 +177,31 @@ static struct platform_device ixdp425_uart = {
- .resource = ixdp425_uart_resources
- };
-
-+/* Built-in 10/100 Ethernet MAC interfaces */
-+static struct eth_plat_info ixdp425_plat_eth[] = {
-+ {
-+ .phy = 0,
-+ .rxq = 3,
-+ .txreadyq = 20,
-+ }, {
-+ .phy = 1,
-+ .rxq = 4,
-+ .txreadyq = 21,
-+ }
-+};
-+
-+static struct platform_device ixdp425_eth[] = {
-+ {
-+ .name = "ixp4xx_eth",
-+ .id = IXP4XX_ETH_NPEB,
-+ .dev.platform_data = ixdp425_plat_eth,
-+ }, {
-+ .name = "ixp4xx_eth",
-+ .id = IXP4XX_ETH_NPEC,
-+ .dev.platform_data = ixdp425_plat_eth + 1,
-+ }
-+};
-+
- static struct platform_device *ixdp425_devices[] __initdata = {
- &ixdp425_i2c_controller,
- &ixdp425_flash,
-@@ -184,7 +209,9 @@ static struct platform_device *ixdp425_devices[] __initdata = {
- defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
- &ixdp425_flash_nand,
- #endif
-- &ixdp425_uart
-+ &ixdp425_uart,
-+ &ixdp425_eth[0],
-+ &ixdp425_eth[1],
- };
-
- static void __init ixdp425_init(void)
-diff --git a/arch/arm/mach-ixp4xx/ixp4xx_npe.c b/arch/arm/mach-ixp4xx/ixp4xx_npe.c
-new file mode 100644
-index 0000000..83c137e
---- /dev/null
-+++ b/arch/arm/mach-ixp4xx/ixp4xx_npe.c
-@@ -0,0 +1,741 @@
-+/*
-+ * Intel IXP4xx Network Processor Engine driver for Linux
-+ *
-+ * Copyright (C) 2007 Krzysztof Halasa <khc@pm.waw.pl>
-+ *
-+ * This program is free software; you can redistribute it and/or modify it
-+ * under the terms of version 2 of the GNU General Public License
-+ * as published by the Free Software Foundation.
-+ *
-+ * The code is based on publicly available information:
-+ * - Intel IXP4xx Developer's Manual and other e-papers
-+ * - Intel IXP400 Access Library Software (BSD license)
-+ * - previous works by Christian Hohnstaedt <chohnstaedt@innominate.com>
-+ * Thanks, Christian.
-+ */
-+
-+#include <linux/delay.h>
-+#include <linux/dma-mapping.h>
-+#include <linux/firmware.h>
-+#include <linux/io.h>
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/slab.h>
-+#include <asm/arch/npe.h>
-+
-+#define DEBUG_MSG 0
-+#define DEBUG_FW 0
-+
-+#define NPE_COUNT 3
-+#define MAX_RETRIES 1000 /* microseconds */
-+#define NPE_42X_DATA_SIZE 0x800 /* in dwords */
-+#define NPE_46X_DATA_SIZE 0x1000
-+#define NPE_A_42X_INSTR_SIZE 0x1000
-+#define NPE_B_AND_C_42X_INSTR_SIZE 0x800
-+#define NPE_46X_INSTR_SIZE 0x1000
-+#define REGS_SIZE 0x1000
-+
-+#define NPE_PHYS_REG 32
-+
-+#define FW_MAGIC 0xFEEDF00D
-+#define FW_BLOCK_TYPE_INSTR 0x0
-+#define FW_BLOCK_TYPE_DATA 0x1
-+#define FW_BLOCK_TYPE_EOF 0xF
-+
-+/* NPE exec status (read) and command (write) */
-+#define CMD_NPE_STEP 0x01
-+#define CMD_NPE_START 0x02
-+#define CMD_NPE_STOP 0x03
-+#define CMD_NPE_CLR_PIPE 0x04
-+#define CMD_CLR_PROFILE_CNT 0x0C
-+#define CMD_RD_INS_MEM 0x10 /* instruction memory */
-+#define CMD_WR_INS_MEM 0x11
-+#define CMD_RD_DATA_MEM 0x12 /* data memory */
-+#define CMD_WR_DATA_MEM 0x13
-+#define CMD_RD_ECS_REG 0x14 /* exec access register */
-+#define CMD_WR_ECS_REG 0x15
-+
-+#define STAT_RUN 0x80000000
-+#define STAT_STOP 0x40000000
-+#define STAT_CLEAR 0x20000000
-+#define STAT_ECS_K 0x00800000 /* pipeline clean */
-+
-+#define NPE_STEVT 0x1B
-+#define NPE_STARTPC 0x1C
-+#define NPE_REGMAP 0x1E
-+#define NPE_CINDEX 0x1F
-+
-+#define INSTR_WR_REG_SHORT 0x0000C000
-+#define INSTR_WR_REG_BYTE 0x00004000
-+#define INSTR_RD_FIFO 0x0F888220
-+#define INSTR_RESET_MBOX 0x0FAC8210
-+
-+#define ECS_BG_CTXT_REG_0 0x00 /* Background Executing Context */
-+#define ECS_BG_CTXT_REG_1 0x01 /* Stack level */
-+#define ECS_BG_CTXT_REG_2 0x02
-+#define ECS_PRI_1_CTXT_REG_0 0x04 /* Priority 1 Executing Context */
-+#define ECS_PRI_1_CTXT_REG_1 0x05 /* Stack level */
-+#define ECS_PRI_1_CTXT_REG_2 0x06
-+#define ECS_PRI_2_CTXT_REG_0 0x08 /* Priority 2 Executing Context */
-+#define ECS_PRI_2_CTXT_REG_1 0x09 /* Stack level */
-+#define ECS_PRI_2_CTXT_REG_2 0x0A
-+#define ECS_DBG_CTXT_REG_0 0x0C /* Debug Executing Context */
-+#define ECS_DBG_CTXT_REG_1 0x0D /* Stack level */
-+#define ECS_DBG_CTXT_REG_2 0x0E
-+#define ECS_INSTRUCT_REG 0x11 /* NPE Instruction Register */
-+
-+#define ECS_REG_0_ACTIVE 0x80000000 /* all levels */
-+#define ECS_REG_0_NEXTPC_MASK 0x1FFF0000 /* BG/PRI1/PRI2 levels */
-+#define ECS_REG_0_LDUR_BITS 8
-+#define ECS_REG_0_LDUR_MASK 0x00000700 /* all levels */
-+#define ECS_REG_1_CCTXT_BITS 16
-+#define ECS_REG_1_CCTXT_MASK 0x000F0000 /* all levels */
-+#define ECS_REG_1_SELCTXT_BITS 0
-+#define ECS_REG_1_SELCTXT_MASK 0x0000000F /* all levels */
-+#define ECS_DBG_REG_2_IF 0x00100000 /* debug level */
-+#define ECS_DBG_REG_2_IE 0x00080000 /* debug level */
-+
-+/* NPE watchpoint_fifo register bit */
-+#define WFIFO_VALID 0x80000000
-+
-+/* NPE messaging_status register bit definitions */
-+#define MSGSTAT_OFNE 0x00010000 /* OutFifoNotEmpty */
-+#define MSGSTAT_IFNF 0x00020000 /* InFifoNotFull */
-+#define MSGSTAT_OFNF 0x00040000 /* OutFifoNotFull */
-+#define MSGSTAT_IFNE 0x00080000 /* InFifoNotEmpty */
-+#define MSGSTAT_MBINT 0x00100000 /* Mailbox interrupt */
-+#define MSGSTAT_IFINT 0x00200000 /* InFifo interrupt */
-+#define MSGSTAT_OFINT 0x00400000 /* OutFifo interrupt */
-+#define MSGSTAT_WFINT 0x00800000 /* WatchFifo interrupt */
-+
-+/* NPE messaging_control register bit definitions */
-+#define MSGCTL_OUT_FIFO 0x00010000 /* enable output FIFO */
-+#define MSGCTL_IN_FIFO 0x00020000 /* enable input FIFO */
-+#define MSGCTL_OUT_FIFO_WRITE 0x01000000 /* enable FIFO + WRITE */
-+#define MSGCTL_IN_FIFO_WRITE 0x02000000
-+
-+/* NPE mailbox_status value for reset */
-+#define RESET_MBOX_STAT 0x0000F0F0
-+
-+const char *npe_names[] = { "NPE-A", "NPE-B", "NPE-C" };
-+
-+#define print_npe(pri, npe, fmt, ...) \
-+ printk(pri "%s: " fmt, npe_name(npe), ## __VA_ARGS__)
-+
-+#if DEBUG_MSG
-+#define debug_msg(npe, fmt, ...) \
-+ print_npe(KERN_DEBUG, npe, fmt, ## __VA_ARGS__)
-+#else
-+#define debug_msg(npe, fmt, ...)
-+#endif
-+
-+static struct {
-+ u32 reg, val;
-+} ecs_reset[] = {
-+ { ECS_BG_CTXT_REG_0, 0xA0000000 },
-+ { ECS_BG_CTXT_REG_1, 0x01000000 },
-+ { ECS_BG_CTXT_REG_2, 0x00008000 },
-+ { ECS_PRI_1_CTXT_REG_0, 0x20000080 },
-+ { ECS_PRI_1_CTXT_REG_1, 0x01000000 },
-+ { ECS_PRI_1_CTXT_REG_2, 0x00008000 },
-+ { ECS_PRI_2_CTXT_REG_0, 0x20000080 },
-+ { ECS_PRI_2_CTXT_REG_1, 0x01000000 },
-+ { ECS_PRI_2_CTXT_REG_2, 0x00008000 },
-+ { ECS_DBG_CTXT_REG_0, 0x20000000 },
-+ { ECS_DBG_CTXT_REG_1, 0x00000000 },
-+ { ECS_DBG_CTXT_REG_2, 0x001E0000 },
-+ { ECS_INSTRUCT_REG, 0x1003C00F },
-+};
-+
-+static struct npe npe_tab[NPE_COUNT] = {
-+ {
-+ .id = 0,
-+ .regs = (struct npe_regs __iomem *)IXP4XX_NPEA_BASE_VIRT,
-+ .regs_phys = IXP4XX_NPEA_BASE_PHYS,
-+ }, {
-+ .id = 1,
-+ .regs = (struct npe_regs __iomem *)IXP4XX_NPEB_BASE_VIRT,
-+ .regs_phys = IXP4XX_NPEB_BASE_PHYS,
-+ }, {
-+ .id = 2,
-+ .regs = (struct npe_regs __iomem *)IXP4XX_NPEC_BASE_VIRT,
-+ .regs_phys = IXP4XX_NPEC_BASE_PHYS,
-+ }
-+};
-+
-+int npe_running(struct npe *npe)
-+{
-+ return (__raw_readl(&npe->regs->exec_status_cmd) & STAT_RUN) != 0;
-+}
-+
-+static void npe_cmd_write(struct npe *npe, u32 addr, int cmd, u32 data)
-+{
-+ __raw_writel(data, &npe->regs->exec_data);
-+ __raw_writel(addr, &npe->regs->exec_addr);
-+ __raw_writel(cmd, &npe->regs->exec_status_cmd);
-+}
-+
-+static u32 npe_cmd_read(struct npe *npe, u32 addr, int cmd)
-+{
-+ __raw_writel(addr, &npe->regs->exec_addr);
-+ __raw_writel(cmd, &npe->regs->exec_status_cmd);
-+ /* Iintroduce extra read cycles after issuing read command to NPE
-+ so that we read the register after the NPE has updated it.
-+ This is to overcome race condition between XScale and NPE */
-+ __raw_readl(&npe->regs->exec_data);
-+ __raw_readl(&npe->regs->exec_data);
-+ return __raw_readl(&npe->regs->exec_data);
-+}
-+
-+static void npe_clear_active(struct npe *npe, u32 reg)
-+{
-+ u32 val = npe_cmd_read(npe, reg, CMD_RD_ECS_REG);
-+ npe_cmd_write(npe, reg, CMD_WR_ECS_REG, val & ~ECS_REG_0_ACTIVE);
-+}
-+
-+static void npe_start(struct npe *npe)
-+{
-+ /* ensure only Background Context Stack Level is active */
-+ npe_clear_active(npe, ECS_PRI_1_CTXT_REG_0);
-+ npe_clear_active(npe, ECS_PRI_2_CTXT_REG_0);
-+ npe_clear_active(npe, ECS_DBG_CTXT_REG_0);
-+
-+ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd);
-+ __raw_writel(CMD_NPE_START, &npe->regs->exec_status_cmd);
-+}
-+
-+static void npe_stop(struct npe *npe)
-+{
-+ __raw_writel(CMD_NPE_STOP, &npe->regs->exec_status_cmd);
-+ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd); /*FIXME?*/
-+}
-+
-+static int __must_check npe_debug_instr(struct npe *npe, u32 instr, u32 ctx,
-+ u32 ldur)
-+{
-+ u32 wc;
-+ int i;
-+
-+ /* set the Active bit, and the LDUR, in the debug level */
-+ npe_cmd_write(npe, ECS_DBG_CTXT_REG_0, CMD_WR_ECS_REG,
-+ ECS_REG_0_ACTIVE | (ldur << ECS_REG_0_LDUR_BITS));
-+
-+ /* set CCTXT at ECS DEBUG L3 to specify in which context to execute
-+ the instruction, and set SELCTXT at ECS DEBUG Level to specify
-+ which context store to access.
-+ Debug ECS Level Reg 1 has form 0x000n000n, where n = context number
-+ */
-+ npe_cmd_write(npe, ECS_DBG_CTXT_REG_1, CMD_WR_ECS_REG,
-+ (ctx << ECS_REG_1_CCTXT_BITS) |
-+ (ctx << ECS_REG_1_SELCTXT_BITS));
-+
-+ /* clear the pipeline */
-+ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd);
-+
-+ /* load NPE instruction into the instruction register */
-+ npe_cmd_write(npe, ECS_INSTRUCT_REG, CMD_WR_ECS_REG, instr);
-+
-+ /* we need this value later to wait for completion of NPE execution
-+ step */
-+ wc = __raw_readl(&npe->regs->watch_count);
-+
-+ /* issue a Step One command via the Execution Control register */
-+ __raw_writel(CMD_NPE_STEP, &npe->regs->exec_status_cmd);
-+
-+ /* Watch Count register increments when NPE completes an instruction */
-+ for (i = 0; i < MAX_RETRIES; i++) {
-+ if (wc != __raw_readl(&npe->regs->watch_count))
-+ return 0;
-+ udelay(1);
-+ }
-+
-+ print_npe(KERN_ERR, npe, "reset: npe_debug_instr(): timeout\n");
-+ return -ETIMEDOUT;
-+}
-+
-+static int __must_check npe_logical_reg_write8(struct npe *npe, u32 addr,
-+ u8 val, u32 ctx)
-+{
-+ /* here we build the NPE assembler instruction: mov8 d0, #0 */
-+ u32 instr = INSTR_WR_REG_BYTE | /* OpCode */
-+ addr << 9 | /* base Operand */
-+ (val & 0x1F) << 4 | /* lower 5 bits to immediate data */
-+ (val & ~0x1F) << (18 - 5);/* higher 3 bits to CoProc instr. */
-+ return npe_debug_instr(npe, instr, ctx, 1); /* execute it */
-+}
-+
-+static int __must_check npe_logical_reg_write16(struct npe *npe, u32 addr,
-+ u16 val, u32 ctx)
-+{
-+ /* here we build the NPE assembler instruction: mov16 d0, #0 */
-+ u32 instr = INSTR_WR_REG_SHORT | /* OpCode */
-+ addr << 9 | /* base Operand */
-+ (val & 0x1F) << 4 | /* lower 5 bits to immediate data */
-+ (val & ~0x1F) << (18 - 5);/* higher 11 bits to CoProc instr. */
-+ return npe_debug_instr(npe, instr, ctx, 1); /* execute it */
-+}
-+
-+static int __must_check npe_logical_reg_write32(struct npe *npe, u32 addr,
-+ u32 val, u32 ctx)
-+{
-+ /* write in 16 bit steps first the high and then the low value */
-+ if (npe_logical_reg_write16(npe, addr, val >> 16, ctx))
-+ return -ETIMEDOUT;
-+ return npe_logical_reg_write16(npe, addr + 2, val & 0xFFFF, ctx);
-+}
-+
-+static int npe_reset(struct npe *npe)
-+{
-+ u32 val, ctl, exec_count, ctx_reg2;
-+ int i;
-+
-+ ctl = (__raw_readl(&npe->regs->messaging_control) | 0x3F000000) &
-+ 0x3F3FFFFF;
-+
-+ /* disable parity interrupt */
-+ __raw_writel(ctl & 0x3F00FFFF, &npe->regs->messaging_control);
-+
-+ /* pre exec - debug instruction */
-+ /* turn off the halt bit by clearing Execution Count register. */
-+ exec_count = __raw_readl(&npe->regs->exec_count);
-+ __raw_writel(0, &npe->regs->exec_count);
-+ /* ensure that IF and IE are on (temporarily), so that we don't end up
-+ stepping forever */
-+ ctx_reg2 = npe_cmd_read(npe, ECS_DBG_CTXT_REG_2, CMD_RD_ECS_REG);
-+ npe_cmd_write(npe, ECS_DBG_CTXT_REG_2, CMD_WR_ECS_REG, ctx_reg2 |
-+ ECS_DBG_REG_2_IF | ECS_DBG_REG_2_IE);
-+
-+ /* clear the FIFOs */
-+ while (__raw_readl(&npe->regs->watchpoint_fifo) & WFIFO_VALID)
-+ ;
-+ while (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_OFNE)
-+ /* read from the outFIFO until empty */
-+ print_npe(KERN_DEBUG, npe, "npe_reset: read FIFO = 0x%X\n",
-+ __raw_readl(&npe->regs->in_out_fifo));
-+
-+ while (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNE)
-+ /* step execution of the NPE intruction to read inFIFO using
-+ the Debug Executing Context stack */
-+ if (npe_debug_instr(npe, INSTR_RD_FIFO, 0, 0))
-+ return -ETIMEDOUT;
-+
-+ /* reset the mailbox reg from the XScale side */
-+ __raw_writel(RESET_MBOX_STAT, &npe->regs->mailbox_status);
-+ /* from NPE side */
-+ if (npe_debug_instr(npe, INSTR_RESET_MBOX, 0, 0))
-+ return -ETIMEDOUT;
-+
-+ /* Reset the physical registers in the NPE register file */
-+ for (val = 0; val < NPE_PHYS_REG; val++) {
-+ if (npe_logical_reg_write16(npe, NPE_REGMAP, val >> 1, 0))
-+ return -ETIMEDOUT;
-+ /* address is either 0 or 4 */
-+ if (npe_logical_reg_write32(npe, (val & 1) * 4, 0, 0))
-+ return -ETIMEDOUT;
-+ }
-+
-+ /* Reset the context store = each context's Context Store registers */
-+
-+ /* Context 0 has no STARTPC. Instead, this value is used to set NextPC
-+ for Background ECS, to set where NPE starts executing code */
-+ val = npe_cmd_read(npe, ECS_BG_CTXT_REG_0, CMD_RD_ECS_REG);
-+ val &= ~ECS_REG_0_NEXTPC_MASK;
-+ val |= (0 /* NextPC */ << 16) & ECS_REG_0_NEXTPC_MASK;
-+ npe_cmd_write(npe, ECS_BG_CTXT_REG_0, CMD_WR_ECS_REG, val);
-+
-+ for (i = 0; i < 16; i++) {
-+ if (i) { /* Context 0 has no STEVT nor STARTPC */
-+ /* STEVT = off, 0x80 */
-+ if (npe_logical_reg_write8(npe, NPE_STEVT, 0x80, i))
-+ return -ETIMEDOUT;
-+ if (npe_logical_reg_write16(npe, NPE_STARTPC, 0, i))
-+ return -ETIMEDOUT;
-+ }
-+ /* REGMAP = d0->p0, d8->p2, d16->p4 */
-+ if (npe_logical_reg_write16(npe, NPE_REGMAP, 0x820, i))
-+ return -ETIMEDOUT;
-+ if (npe_logical_reg_write8(npe, NPE_CINDEX, 0, i))
-+ return -ETIMEDOUT;
-+ }
-+
-+ /* post exec */
-+ /* clear active bit in debug level */
-+ npe_cmd_write(npe, ECS_DBG_CTXT_REG_0, CMD_WR_ECS_REG, 0);
-+ /* clear the pipeline */
-+ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd);
-+ /* restore previous values */
-+ __raw_writel(exec_count, &npe->regs->exec_count);
-+ npe_cmd_write(npe, ECS_DBG_CTXT_REG_2, CMD_WR_ECS_REG, ctx_reg2);
-+
-+ /* write reset values to Execution Context Stack registers */
-+ for (val = 0; val < ARRAY_SIZE(ecs_reset); val++)
-+ npe_cmd_write(npe, ecs_reset[val].reg, CMD_WR_ECS_REG,
-+ ecs_reset[val].val);
-+
-+ /* clear the profile counter */
-+ __raw_writel(CMD_CLR_PROFILE_CNT, &npe->regs->exec_status_cmd);
-+
-+ __raw_writel(0, &npe->regs->exec_count);
-+ __raw_writel(0, &npe->regs->action_points[0]);
-+ __raw_writel(0, &npe->regs->action_points[1]);
-+ __raw_writel(0, &npe->regs->action_points[2]);
-+ __raw_writel(0, &npe->regs->action_points[3]);
-+ __raw_writel(0, &npe->regs->watch_count);
-+
-+ val = ixp4xx_read_feature_bits();
-+ /* reset the NPE */
-+ ixp4xx_write_feature_bits(val &
-+ ~(IXP4XX_FEATURE_RESET_NPEA << npe->id));
-+ for (i = 0; i < MAX_RETRIES; i++) {
-+ if (!(ixp4xx_read_feature_bits() &
-+ (IXP4XX_FEATURE_RESET_NPEA << npe->id)))
-+ break; /* reset completed */
-+ udelay(1);
-+ }
-+ if (i == MAX_RETRIES)
-+ return -ETIMEDOUT;
-+
-+ /* deassert reset */
-+ ixp4xx_write_feature_bits(val |
-+ (IXP4XX_FEATURE_RESET_NPEA << npe->id));
-+ for (i = 0; i < MAX_RETRIES; i++) {
-+ if (ixp4xx_read_feature_bits() &
-+ (IXP4XX_FEATURE_RESET_NPEA << npe->id))
-+ break; /* NPE is back alive */
-+ udelay(1);
-+ }
-+ if (i == MAX_RETRIES)
-+ return -ETIMEDOUT;
-+
-+ npe_stop(npe);
-+
-+ /* restore NPE configuration bus Control Register - parity settings */
-+ __raw_writel(ctl, &npe->regs->messaging_control);
-+ return 0;
-+}
-+
-+
-+int npe_send_message(struct npe *npe, const void *msg, const char *what)
-+{
-+ const u32 *send = msg;
-+ int cycles = 0;
-+
-+ debug_msg(npe, "Trying to send message %s [%08X:%08X]\n",
-+ what, send[0], send[1]);
-+
-+ if (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNE) {
-+ debug_msg(npe, "NPE input FIFO not empty\n");
-+ return -EIO;
-+ }
-+
-+ __raw_writel(send[0], &npe->regs->in_out_fifo);
-+
-+ if (!(__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNF)) {
-+ debug_msg(npe, "NPE input FIFO full\n");
-+ return -EIO;
-+ }
-+
-+ __raw_writel(send[1], &npe->regs->in_out_fifo);
-+
-+ while ((cycles < MAX_RETRIES) &&
-+ (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNE)) {
-+ udelay(1);
-+ cycles++;
-+ }
-+
-+ if (cycles == MAX_RETRIES) {
-+ debug_msg(npe, "Timeout sending message\n");
-+ return -ETIMEDOUT;
-+ }
-+
-+ debug_msg(npe, "Sending a message took %i cycles\n", cycles);
-+ return 0;
-+}
-+
-+int npe_recv_message(struct npe *npe, void *msg, const char *what)
-+{
-+ u32 *recv = msg;
-+ int cycles = 0, cnt = 0;
-+
-+ debug_msg(npe, "Trying to receive message %s\n", what);
-+
-+ while (cycles < MAX_RETRIES) {
-+ if (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_OFNE) {
-+ recv[cnt++] = __raw_readl(&npe->regs->in_out_fifo);
-+ if (cnt == 2)
-+ break;
-+ } else {
-+ udelay(1);
-+ cycles++;
-+ }
-+ }
-+
-+ switch(cnt) {
-+ case 1:
-+ debug_msg(npe, "Received [%08X]\n", recv[0]);
-+ break;
-+ case 2:
-+ debug_msg(npe, "Received [%08X:%08X]\n", recv[0], recv[1]);
-+ break;
-+ }
-+
-+ if (cycles == MAX_RETRIES) {
-+ debug_msg(npe, "Timeout waiting for message\n");
-+ return -ETIMEDOUT;
-+ }
-+
-+ debug_msg(npe, "Receiving a message took %i cycles\n", cycles);
-+ return 0;
-+}
-+
-+int npe_send_recv_message(struct npe *npe, void *msg, const char *what)
-+{
-+ int result;
-+ u32 *send = msg, recv[2];
-+
-+ if ((result = npe_send_message(npe, msg, what)) != 0)
-+ return result;
-+ if ((result = npe_recv_message(npe, recv, what)) != 0)
-+ return result;
-+
-+ if ((recv[0] != send[0]) || (recv[1] != send[1])) {
-+ debug_msg(npe, "Message %s: unexpected message received\n",
-+ what);
-+ return -EIO;
-+ }
-+ return 0;
-+}
-+
-+
-+int npe_load_firmware(struct npe *npe, const char *name, struct device *dev)
-+{
-+ const struct firmware *fw_entry;
-+
-+ struct dl_block {
-+ u32 type;
-+ u32 offset;
-+ } *blk;
-+
-+ struct dl_image {
-+ u32 magic;
-+ u32 id;
-+ u32 size;
-+ union {
-+ u32 data[0];
-+ struct dl_block blocks[0];
-+ };
-+ } *image;
-+
-+ struct dl_codeblock {
-+ u32 npe_addr;
-+ u32 size;
-+ u32 data[0];
-+ } *cb;
-+
-+ int i, j, err, data_size, instr_size, blocks, table_end;
-+ u32 cmd;
-+
-+ if ((err = request_firmware(&fw_entry, name, dev)) != 0)
-+ return err;
-+
-+ err = -EINVAL;
-+ if (fw_entry->size < sizeof(struct dl_image)) {
-+ print_npe(KERN_ERR, npe, "incomplete firmware file\n");
-+ goto err;
-+ }
-+ image = (struct dl_image*)fw_entry->data;
-+
-+#if DEBUG_FW
-+ print_npe(KERN_DEBUG, npe, "firmware: %08X %08X %08X (0x%X bytes)\n",
-+ image->magic, image->id, image->size, image->size * 4);
-+#endif
-+
-+ if (image->magic == swab32(FW_MAGIC)) { /* swapped file */
-+ image->id = swab32(image->id);
-+ image->size = swab32(image->size);
-+ } else if (image->magic != FW_MAGIC) {
-+ print_npe(KERN_ERR, npe, "bad firmware file magic: 0x%X\n",
-+ image->magic);
-+ goto err;
-+ }
-+ if ((image->size * 4 + sizeof(struct dl_image)) != fw_entry->size) {
-+ print_npe(KERN_ERR, npe,
-+ "inconsistent size of firmware file\n");
-+ goto err;
-+ }
-+ if (((image->id >> 24) & 0xF /* NPE ID */) != npe->id) {
-+ print_npe(KERN_ERR, npe, "firmware file NPE ID mismatch\n");
-+ goto err;
-+ }
-+ if (image->magic == swab32(FW_MAGIC))
-+ for (i = 0; i < image->size; i++)
-+ image->data[i] = swab32(image->data[i]);
-+
-+ if (!cpu_is_ixp46x() && ((image->id >> 28) & 0xF /* device ID */)) {
-+ print_npe(KERN_INFO, npe, "IXP46x firmware ignored on "
-+ "IXP42x\n");
-+ goto err;
-+ }
-+
-+ if (npe_running(npe)) {
-+ print_npe(KERN_INFO, npe, "unable to load firmware, NPE is "
-+ "already running\n");
-+ err = -EBUSY;
-+ goto err;
-+ }
-+#if 0
-+ npe_stop(npe);
-+ npe_reset(npe);
-+#endif
-+
-+ print_npe(KERN_INFO, npe, "firmware functionality 0x%X, "
-+ "revision 0x%X:%X\n", (image->id >> 16) & 0xFF,
-+ (image->id >> 8) & 0xFF, image->id & 0xFF);
-+
-+ if (!cpu_is_ixp46x()) {
-+ if (!npe->id)
-+ instr_size = NPE_A_42X_INSTR_SIZE;
-+ else
-+ instr_size = NPE_B_AND_C_42X_INSTR_SIZE;
-+ data_size = NPE_42X_DATA_SIZE;
-+ } else {
-+ instr_size = NPE_46X_INSTR_SIZE;
-+ data_size = NPE_46X_DATA_SIZE;
-+ }
-+
-+ for (blocks = 0; blocks * sizeof(struct dl_block) / 4 < image->size;
-+ blocks++)
-+ if (image->blocks[blocks].type == FW_BLOCK_TYPE_EOF)
-+ break;
-+ if (blocks * sizeof(struct dl_block) / 4 >= image->size) {
-+ print_npe(KERN_INFO, npe, "firmware EOF block marker not "
-+ "found\n");
-+ goto err;
-+ }
-+
-+#if DEBUG_FW
-+ print_npe(KERN_DEBUG, npe, "%i firmware blocks found\n", blocks);
-+#endif
-+
-+ table_end = blocks * sizeof(struct dl_block) / 4 + 1 /* EOF marker */;
-+ for (i = 0, blk = image->blocks; i < blocks; i++, blk++) {
-+ if (blk->offset > image->size - sizeof(struct dl_codeblock) / 4
-+ || blk->offset < table_end) {
-+ print_npe(KERN_INFO, npe, "invalid offset 0x%X of "
-+ "firmware block #%i\n", blk->offset, i);
-+ goto err;
-+ }
-+
-+ cb = (struct dl_codeblock*)&image->data[blk->offset];
-+ if (blk->type == FW_BLOCK_TYPE_INSTR) {
-+ if (cb->npe_addr + cb->size > instr_size)
-+ goto too_big;
-+ cmd = CMD_WR_INS_MEM;
-+ } else if (blk->type == FW_BLOCK_TYPE_DATA) {
-+ if (cb->npe_addr + cb->size > data_size)
-+ goto too_big;
-+ cmd = CMD_WR_DATA_MEM;
-+ } else {
-+ print_npe(KERN_INFO, npe, "invalid firmware block #%i "
-+ "type 0x%X\n", i, blk->type);
-+ goto err;
-+ }
-+ if (blk->offset + sizeof(*cb) / 4 + cb->size > image->size) {
-+ print_npe(KERN_INFO, npe, "firmware block #%i doesn't "
-+ "fit in firmware image: type %c, start 0x%X,"
-+ " length 0x%X\n", i,
-+ blk->type == FW_BLOCK_TYPE_INSTR ? 'I' : 'D',
-+ cb->npe_addr, cb->size);
-+ goto err;
-+ }
-+
-+ for (j = 0; j < cb->size; j++)
-+ npe_cmd_write(npe, cb->npe_addr + j, cmd, cb->data[j]);
-+ }
-+
-+ npe_start(npe);
-+ if (!npe_running(npe))
-+ print_npe(KERN_ERR, npe, "unable to start\n");
-+ release_firmware(fw_entry);
-+ return 0;
-+
-+too_big:
-+ print_npe(KERN_INFO, npe, "firmware block #%i doesn't fit in NPE "
-+ "memory: type %c, start 0x%X, length 0x%X\n", i,
-+ blk->type == FW_BLOCK_TYPE_INSTR ? 'I' : 'D',
-+ cb->npe_addr, cb->size);
-+err:
-+ release_firmware(fw_entry);
-+ return err;
-+}
-+
-+
-+struct npe *npe_request(int id)
-+{
-+ if (id < NPE_COUNT)
-+ if (npe_tab[id].valid)
-+ if (try_module_get(THIS_MODULE))
-+ return &npe_tab[id];
-+ return NULL;
-+}
-+
-+void npe_release(struct npe *npe)
-+{
-+ module_put(THIS_MODULE);
-+}
-+
-+
-+static int __init npe_init_module(void)
-+{
-+
-+ int i, found = 0;
-+
-+ for (i = 0; i < NPE_COUNT; i++) {
-+ struct npe *npe = &npe_tab[i];
-+ if (!(ixp4xx_read_feature_bits() &
-+ (IXP4XX_FEATURE_RESET_NPEA << i)))
-+ continue; /* NPE already disabled or not present */
-+ if (!(npe->mem_res = request_mem_region(npe->regs_phys,
-+ REGS_SIZE,
-+ npe_name(npe)))) {
-+ print_npe(KERN_ERR, npe,
-+ "failed to request memory region\n");
-+ continue;
-+ }
-+
-+ if (npe_reset(npe))
-+ continue;
-+ npe->valid = 1;
-+ found++;
-+ }
-+
-+ if (!found)
-+ return -ENOSYS;
-+ return 0;
-+}
-+
-+static void __exit npe_cleanup_module(void)
-+{
-+ int i;
-+
-+ for (i = 0; i < NPE_COUNT; i++)
-+ if (npe_tab[i].mem_res) {
-+ npe_reset(&npe_tab[i]);
-+ release_resource(npe_tab[i].mem_res);
-+ }
-+}
-+
-+module_init(npe_init_module);
-+module_exit(npe_cleanup_module);
-+
-+MODULE_AUTHOR("Krzysztof Halasa");
-+MODULE_LICENSE("GPL v2");
-+
-+EXPORT_SYMBOL(npe_names);
-+EXPORT_SYMBOL(npe_running);
-+EXPORT_SYMBOL(npe_request);
-+EXPORT_SYMBOL(npe_release);
-+EXPORT_SYMBOL(npe_load_firmware);
-+EXPORT_SYMBOL(npe_send_message);
-+EXPORT_SYMBOL(npe_recv_message);
-+EXPORT_SYMBOL(npe_send_recv_message);
-diff --git a/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c b/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c
-new file mode 100644
-index 0000000..e833013
---- /dev/null
-+++ b/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c
-@@ -0,0 +1,274 @@
-+/*
-+ * Intel IXP4xx Queue Manager driver for Linux
-+ *
-+ * Copyright (C) 2007 Krzysztof Halasa <khc@pm.waw.pl>
-+ *
-+ * This program is free software; you can redistribute it and/or modify it
-+ * under the terms of version 2 of the GNU General Public License
-+ * as published by the Free Software Foundation.
-+ */
-+
-+#include <linux/ioport.h>
-+#include <linux/interrupt.h>
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <asm/arch/qmgr.h>
-+
-+#define DEBUG 0
-+
-+struct qmgr_regs __iomem *qmgr_regs;
-+static struct resource *mem_res;
-+static spinlock_t qmgr_lock;
-+static u32 used_sram_bitmap[4]; /* 128 16-dword pages */
-+static void (*irq_handlers[HALF_QUEUES])(void *pdev);
-+static void *irq_pdevs[HALF_QUEUES];
-+
-+void qmgr_set_irq(unsigned int queue, int src,
-+ void (*handler)(void *pdev), void *pdev)
-+{
-+ u32 __iomem *reg = &qmgr_regs->irqsrc[queue / 8]; /* 8 queues / u32 */
-+ int bit = (queue % 8) * 4; /* 3 bits + 1 reserved bit per queue */
-+ unsigned long flags;
-+
-+ src &= 7;
-+ spin_lock_irqsave(&qmgr_lock, flags);
-+ __raw_writel((__raw_readl(reg) & ~(7 << bit)) | (src << bit), reg);
-+ irq_handlers[queue] = handler;
-+ irq_pdevs[queue] = pdev;
-+ spin_unlock_irqrestore(&qmgr_lock, flags);
-+}
-+
-+
-+static irqreturn_t qmgr_irq1(int irq, void *pdev)
-+{
-+ int i;
-+ u32 val = __raw_readl(&qmgr_regs->irqstat[0]);
-+ __raw_writel(val, &qmgr_regs->irqstat[0]); /* ACK */
-+
-+ for (i = 0; i < HALF_QUEUES; i++)
-+ if (val & (1 << i))
-+ irq_handlers[i](irq_pdevs[i]);
-+
-+ return val ? IRQ_HANDLED : 0;
-+}
-+
-+
-+void qmgr_enable_irq(unsigned int queue)
-+{
-+ unsigned long flags;
-+
-+ spin_lock_irqsave(&qmgr_lock, flags);
-+ __raw_writel(__raw_readl(&qmgr_regs->irqen[0]) | (1 << queue),
-+ &qmgr_regs->irqen[0]);
-+ spin_unlock_irqrestore(&qmgr_lock, flags);
-+}
-+
-+void qmgr_disable_irq(unsigned int queue)
-+{
-+ unsigned long flags;
-+
-+ spin_lock_irqsave(&qmgr_lock, flags);
-+ __raw_writel(__raw_readl(&qmgr_regs->irqen[0]) & ~(1 << queue),
-+ &qmgr_regs->irqen[0]);
-+ spin_unlock_irqrestore(&qmgr_lock, flags);
-+}
-+
-+static inline void shift_mask(u32 *mask)
-+{
-+ mask[3] = mask[3] << 1 | mask[2] >> 31;
-+ mask[2] = mask[2] << 1 | mask[1] >> 31;
-+ mask[1] = mask[1] << 1 | mask[0] >> 31;
-+ mask[0] <<= 1;
-+}
-+
-+int qmgr_request_queue(unsigned int queue, unsigned int len /* dwords */,
-+ unsigned int nearly_empty_watermark,
-+ unsigned int nearly_full_watermark)
-+{
-+ u32 cfg, addr = 0, mask[4]; /* in 16-dwords */
-+ int err;
-+
-+ if (queue >= HALF_QUEUES)
-+ return -ERANGE;
-+
-+ if ((nearly_empty_watermark | nearly_full_watermark) & ~7)
-+ return -EINVAL;
-+
-+ switch (len) {
-+ case 16:
-+ cfg = 0 << 24;
-+ mask[0] = 0x1;
-+ break;
-+ case 32:
-+ cfg = 1 << 24;
-+ mask[0] = 0x3;
-+ break;
-+ case 64:
-+ cfg = 2 << 24;
-+ mask[0] = 0xF;
-+ break;
-+ case 128:
-+ cfg = 3 << 24;
-+ mask[0] = 0xFF;
-+ break;
-+ default:
-+ return -EINVAL;
-+ }
-+
-+ cfg |= nearly_empty_watermark << 26;
-+ cfg |= nearly_full_watermark << 29;
-+ len /= 16; /* in 16-dwords: 1, 2, 4 or 8 */
-+ mask[1] = mask[2] = mask[3] = 0;
-+
-+ if (!try_module_get(THIS_MODULE))
-+ return -ENODEV;
-+
-+ spin_lock_irq(&qmgr_lock);
-+ if (__raw_readl(&qmgr_regs->sram[queue])) {
-+ err = -EBUSY;
-+ goto err;
-+ }
-+
-+ while (1) {
-+ if (!(used_sram_bitmap[0] & mask[0]) &&
-+ !(used_sram_bitmap[1] & mask[1]) &&
-+ !(used_sram_bitmap[2] & mask[2]) &&
-+ !(used_sram_bitmap[3] & mask[3]))
-+ break; /* found free space */
-+
-+ addr++;
-+ shift_mask(mask);
-+ if (addr + len > ARRAY_SIZE(qmgr_regs->sram)) {
-+ printk(KERN_ERR "qmgr: no free SRAM space for"
-+ " queue %i\n", queue);
-+ err = -ENOMEM;
-+ goto err;
-+ }
-+ }
-+
-+ used_sram_bitmap[0] |= mask[0];
-+ used_sram_bitmap[1] |= mask[1];
-+ used_sram_bitmap[2] |= mask[2];
-+ used_sram_bitmap[3] |= mask[3];
-+ __raw_writel(cfg | (addr << 14), &qmgr_regs->sram[queue]);
-+ spin_unlock_irq(&qmgr_lock);
-+
-+#if DEBUG
-+ printk(KERN_DEBUG "qmgr: requested queue %i, addr = 0x%02X\n",
-+ queue, addr);
-+#endif
-+ return 0;
-+
-+err:
-+ spin_unlock_irq(&qmgr_lock);
-+ module_put(THIS_MODULE);
-+ return err;
-+}
-+
-+void qmgr_release_queue(unsigned int queue)
-+{
-+ u32 cfg, addr, mask[4];
-+
-+ BUG_ON(queue >= HALF_QUEUES); /* not in valid range */
-+
-+ spin_lock_irq(&qmgr_lock);
-+ cfg = __raw_readl(&qmgr_regs->sram[queue]);
-+ addr = (cfg >> 14) & 0xFF;
-+
-+ BUG_ON(!addr); /* not requested */
-+
-+ switch ((cfg >> 24) & 3) {
-+ case 0: mask[0] = 0x1; break;
-+ case 1: mask[0] = 0x3; break;
-+ case 2: mask[0] = 0xF; break;
-+ case 3: mask[0] = 0xFF; break;
-+ }
-+
-+ while (addr--)
-+ shift_mask(mask);
-+
-+ __raw_writel(0, &qmgr_regs->sram[queue]);
-+
-+ used_sram_bitmap[0] &= ~mask[0];
-+ used_sram_bitmap[1] &= ~mask[1];
-+ used_sram_bitmap[2] &= ~mask[2];
-+ used_sram_bitmap[3] &= ~mask[3];
-+ irq_handlers[queue] = NULL; /* catch IRQ bugs */
-+ spin_unlock_irq(&qmgr_lock);
-+
-+ module_put(THIS_MODULE);
-+#if DEBUG
-+ printk(KERN_DEBUG "qmgr: released queue %i\n", queue);
-+#endif
-+}
-+
-+static int qmgr_init(void)
-+{
-+ int i, err;
-+ mem_res = request_mem_region(IXP4XX_QMGR_BASE_PHYS,
-+ IXP4XX_QMGR_REGION_SIZE,
-+ "IXP4xx Queue Manager");
-+ if (mem_res == NULL)
-+ return -EBUSY;
-+
-+ qmgr_regs = ioremap(IXP4XX_QMGR_BASE_PHYS, IXP4XX_QMGR_REGION_SIZE);
-+ if (qmgr_regs == NULL) {
-+ err = -ENOMEM;
-+ goto error_map;
-+ }
-+
-+ /* reset qmgr registers */
-+ for (i = 0; i < 4; i++) {
-+ __raw_writel(0x33333333, &qmgr_regs->stat1[i]);
-+ __raw_writel(0, &qmgr_regs->irqsrc[i]);
-+ }
-+ for (i = 0; i < 2; i++) {
-+ __raw_writel(0, &qmgr_regs->stat2[i]);
-+ __raw_writel(0xFFFFFFFF, &qmgr_regs->irqstat[i]); /* clear */
-+ __raw_writel(0, &qmgr_regs->irqen[i]);
-+ }
-+
-+ for (i = 0; i < QUEUES; i++)
-+ __raw_writel(0, &qmgr_regs->sram[i]);
-+
-+ err = request_irq(IRQ_IXP4XX_QM1, qmgr_irq1, 0,
-+ "IXP4xx Queue Manager", NULL);
-+ if (err) {
-+ printk(KERN_ERR "qmgr: failed to request IRQ%i\n",
-+ IRQ_IXP4XX_QM1);
-+ goto error_irq;
-+ }
-+
-+ used_sram_bitmap[0] = 0xF; /* 4 first pages reserved for config */
-+ spin_lock_init(&qmgr_lock);
-+
-+ printk(KERN_INFO "IXP4xx Queue Manager initialized.\n");
-+ return 0;
-+
-+error_irq:
-+ iounmap(qmgr_regs);
-+error_map:
-+ release_mem_region(IXP4XX_QMGR_BASE_PHYS, IXP4XX_QMGR_REGION_SIZE);
-+ return err;
-+}
-+
-+static void qmgr_remove(void)
-+{
-+ free_irq(IRQ_IXP4XX_QM1, NULL);
-+ synchronize_irq(IRQ_IXP4XX_QM1);
-+ iounmap(qmgr_regs);
-+ release_mem_region(IXP4XX_QMGR_BASE_PHYS, IXP4XX_QMGR_REGION_SIZE);
-+}
-+
-+module_init(qmgr_init);
-+module_exit(qmgr_remove);
-+
-+MODULE_LICENSE("GPL v2");
-+MODULE_AUTHOR("Krzysztof Halasa");
-+
-+EXPORT_SYMBOL(qmgr_regs);
-+EXPORT_SYMBOL(qmgr_set_irq);
-+EXPORT_SYMBOL(qmgr_enable_irq);
-+EXPORT_SYMBOL(qmgr_disable_irq);
-+EXPORT_SYMBOL(qmgr_request_queue);
-+EXPORT_SYMBOL(qmgr_release_queue);
diff --git a/drivers/net/arm/Kconfig b/drivers/net/arm/Kconfig
index f9cc2b6..9274d3f 100644
--- a/drivers/net/arm/Kconfig
@@ -1148,10 +27,10 @@ index a4c8682..7c812ac 100644
+obj-$(CONFIG_IXP4XX_ETH) += ixp4xx_eth.o
diff --git a/drivers/net/arm/ixp4xx_eth.c b/drivers/net/arm/ixp4xx_eth.c
new file mode 100644
-index 0000000..2c23f50
+index 0000000..98131a7
--- /dev/null
+++ b/drivers/net/arm/ixp4xx_eth.c
-@@ -0,0 +1,1259 @@
+@@ -0,0 +1,1261 @@
+/*
+ * Intel IXP4xx Ethernet driver for Linux
+ *
@@ -1220,6 +99,8 @@ index 0000000..2c23f50
+#define RXFREE_QUEUE(port_id) (NPE_ID(port_id) + 26)
+#define TXDONE_QUEUE 31
+
++#define ETH_NAPI_WEIGHT 16
++
+/* TX Control Registers */
+#define TX_CNTRL0_TX_EN 0x01
+#define TX_CNTRL0_HALFDUPLEX 0x02
@@ -1315,6 +196,7 @@ index 0000000..2c23f50
+ struct eth_regs __iomem *regs;
+ struct npe *npe;
+ struct net_device *netdev;
++ struct napi_struct napi;
+ struct net_device_stats stat;
+ struct mii_if_info mii;
+ struct delayed_work mdio_thread;
@@ -1649,20 +531,21 @@ index 0000000..2c23f50
+ printk(KERN_DEBUG "%s: eth_rx_irq\n", dev->name);
+#endif
+ qmgr_disable_irq(port->plat->rxq);
-+ netif_rx_schedule(dev);
++ netif_rx_schedule(dev, &port->napi);
+}
+
-+static int eth_poll(struct net_device *dev, int *budget)
++static int eth_poll(struct napi_struct *napi, int budget)
+{
-+ struct port *port = netdev_priv(dev);
++ struct port *port = container_of(napi, struct port, napi);
++ struct net_device *dev = port->netdev;
+ unsigned int rxq = port->plat->rxq, rxfreeq = RXFREE_QUEUE(port->id);
-+ int quota = dev->quota, received = 0;
++ int received = 0;
+
+#if DEBUG_RX
+ printk(KERN_DEBUG "%s: eth_poll\n", dev->name);
+#endif
+
-+ while (quota) {
++ while (received < budget) {
+ struct sk_buff *skb;
+ struct desc *desc;
+ int n;
@@ -1672,17 +555,15 @@ index 0000000..2c23f50
+#endif
+
+ if ((n = queue_get_desc(rxq, port, 0)) < 0) {
-+ dev->quota -= received; /* No packet received */
-+ *budget -= received;
-+ received = 0;
++ received = 0; /* No packet received */
+#if DEBUG_RX
+ printk(KERN_DEBUG "%s: eth_poll netif_rx_complete\n",
+ dev->name);
+#endif
-+ netif_rx_complete(dev);
++ netif_rx_complete(dev, &port->napi);
+ qmgr_enable_irq(rxq);
+ if (!qmgr_stat_empty(rxq) &&
-+ netif_rx_reschedule(dev, 0)) {
++ netif_rx_reschedule(dev, &port->napi)) {
+#if DEBUG_RX
+ printk(KERN_DEBUG "%s: eth_poll"
+ " netif_rx_reschedule successed\n",
@@ -1752,15 +633,13 @@ index 0000000..2c23f50
+ desc->buf_len = MAX_MRU;
+ desc->pkt_len = 0;
+ queue_put_desc(rxfreeq, rx_desc_phys(port, n), desc);
-+ quota--;
+ received++;
+ }
-+ dev->quota -= received;
-+ *budget -= received;
++
+#if DEBUG_RX
+ printk(KERN_DEBUG "eth_poll(): end, not all work done\n");
+#endif
-+ return 1; /* not all work done */
++ return received; /* not all work done */
+}
+
+
@@ -2163,6 +1042,8 @@ index 0000000..2c23f50
+ __raw_writel(0, &port->regs->rx_control[1]);
+ __raw_writel(DEFAULT_RX_CNTRL0, &port->regs->rx_control[0]);
+
++ napi_enable(&port->napi); /* check location of this call */
++
+ phy_check_media(port, 1);
+ eth_set_mcast_list(dev);
+ netif_start_queue(dev);
@@ -2176,7 +1057,7 @@ index 0000000..2c23f50
+ qmgr_enable_irq(TXDONE_QUEUE);
+ }
+ ports_open++;
-+ netif_rx_schedule(dev); /* we may already have RX data, enables IRQ */
++ netif_rx_schedule(dev, &port->napi); /* we may already have RX data, enables IRQ */
+ return 0;
+}
+
@@ -2263,6 +1144,7 @@ index 0000000..2c23f50
+ if (!ports_open)
+ qmgr_disable_irq(TXDONE_QUEUE);
+ cancel_rearming_delayed_work(&port->mdio_thread);
++ napi_disable(&port->napi);
+ destroy_queues(port);
+ release_queues(port);
+ return 0;
@@ -2279,7 +1161,6 @@ index 0000000..2c23f50
+ if (!(dev = alloc_etherdev(sizeof(struct port))))
+ return -ENOMEM;
+
-+ SET_MODULE_OWNER(dev);
+ SET_NETDEV_DEV(dev, &pdev->dev);
+ port = netdev_priv(dev);
+ port->netdev = dev;
@@ -2305,14 +1186,14 @@ index 0000000..2c23f50
+
+ dev->open = eth_open;
+ dev->hard_start_xmit = eth_xmit;
-+ dev->poll = eth_poll;
+ dev->stop = eth_close;
+ dev->get_stats = eth_stats;
+ dev->do_ioctl = eth_ioctl;
+ dev->set_multicast_list = eth_set_mcast_list;
-+ dev->weight = 16;
+ dev->tx_queue_len = 100;
+
++ netif_napi_add(dev, &port->napi, eth_poll, ETH_NAPI_WEIGHT);
++
+ if (!(port->npe = npe_request(NPE_ID(port->id)))) {
+ err = -EIO;
+ goto err_free;
@@ -3719,51 +2600,22 @@ index 0000000..c4cdace
+MODULE_LICENSE("GPL v2");
+module_init(hss_init_module);
+module_exit(hss_cleanup_module);
-diff --git a/include/asm-arm/arch-ixp4xx/cpu.h b/include/asm-arm/arch-ixp4xx/cpu.h
-index d2523b3..2fa3d6b 100644
---- a/include/asm-arm/arch-ixp4xx/cpu.h
-+++ b/include/asm-arm/arch-ixp4xx/cpu.h
-@@ -28,4 +28,19 @@ extern unsigned int processor_id;
- #define cpu_is_ixp46x() ((processor_id & IXP4XX_PROCESSOR_ID_MASK) == \
- IXP465_PROCESSOR_ID_VALUE)
-
-+static inline u32 ixp4xx_read_feature_bits(void)
-+{
-+ unsigned int val = ~*IXP4XX_EXP_CFG2;
-+ val &= ~IXP4XX_FEATURE_RESERVED;
-+ if (!cpu_is_ixp46x())
-+ val &= ~IXP4XX_FEATURE_IXP46X_ONLY;
-+
-+ return val;
-+}
-+
-+static inline void ixp4xx_write_feature_bits(u32 value)
-+{
-+ *IXP4XX_EXP_CFG2 = ~value;
-+}
-+
- #endif /* _ASM_ARCH_CPU_H */
-diff --git a/include/asm-arm/arch-ixp4xx/hardware.h b/include/asm-arm/arch-ixp4xx/hardware.h
-index 297ceda..73e8dc3 100644
---- a/include/asm-arm/arch-ixp4xx/hardware.h
-+++ b/include/asm-arm/arch-ixp4xx/hardware.h
-@@ -27,13 +27,13 @@
-
- #define pcibios_assign_all_busses() 1
-
-+/* Register locations and bits */
-+#include "ixp4xx-regs.h"
-+
- #ifndef __ASSEMBLER__
- #include <asm/arch/cpu.h>
- #endif
-
--/* Register locations and bits */
--#include "ixp4xx-regs.h"
--
- /* Platform helper functions and definitions */
- #include "platform.h"
-
+From: Krzysztof Halasa <khc@pm.waw.pl>
+Subject: Adds functions to read and write IXP4xx "feature" bits
+
+Adds functions to read and write IXP4xx "feature" (aka "fuse")
+bits, containing information about available/enabled CPU features.
+
+The uncompress.h included by boot/compressed/misc.c resides in
+a different space than rest of the kernel and thus can't use
+asm/hardware.h (including asm/arch/cpu.h - which, in turn, may use
+EXPORTed symbol "processor_id").
+
+Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl>
+--
+PATCH FOLLOWS
+KernelVersion: 2.6.23
+
diff --git a/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h b/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h
index 5d949d7..c704fe8 100644
--- a/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h
@@ -3816,93 +2668,125 @@ index 5d949d7..c704fe8 100644
+ IXP4XX_FEATURE_XSCALE_MAX_FREQ)
+
#endif
-diff --git a/include/asm-arm/arch-ixp4xx/npe.h b/include/asm-arm/arch-ixp4xx/npe.h
-new file mode 100644
-index 0000000..37d0511
---- /dev/null
-+++ b/include/asm-arm/arch-ixp4xx/npe.h
-@@ -0,0 +1,39 @@
-+#ifndef __IXP4XX_NPE_H
-+#define __IXP4XX_NPE_H
-+
-+#include <linux/kernel.h>
-+
-+extern const char *npe_names[];
-+
-+struct npe_regs {
-+ u32 exec_addr, exec_data, exec_status_cmd, exec_count;
-+ u32 action_points[4];
-+ u32 watchpoint_fifo, watch_count;
-+ u32 profile_count;
-+ u32 messaging_status, messaging_control;
-+ u32 mailbox_status, /*messaging_*/ in_out_fifo;
-+};
-+
-+struct npe {
-+ struct resource *mem_res;
-+ struct npe_regs __iomem *regs;
-+ u32 regs_phys;
-+ int id;
-+ int valid;
-+};
+diff --git a/include/asm-arm/arch-ixp4xx/cpu.h b/include/asm-arm/arch-ixp4xx/cpu.h
+index d2523b3..2fa3d6b 100644
+--- a/include/asm-arm/arch-ixp4xx/cpu.h
++++ b/include/asm-arm/arch-ixp4xx/cpu.h
+@@ -28,4 +28,19 @@ extern unsigned int processor_id;
+ #define cpu_is_ixp46x() ((processor_id & IXP4XX_PROCESSOR_ID_MASK) == \
+ IXP465_PROCESSOR_ID_VALUE)
+
++static inline u32 ixp4xx_read_feature_bits(void)
++{
++ unsigned int val = ~*IXP4XX_EXP_CFG2;
++ val &= ~IXP4XX_FEATURE_RESERVED;
++ if (!cpu_is_ixp46x())
++ val &= ~IXP4XX_FEATURE_IXP46X_ONLY;
+
++ return val;
++}
+
-+static inline const char *npe_name(struct npe *npe)
++static inline void ixp4xx_write_feature_bits(u32 value)
+{
-+ return npe_names[npe->id];
++ *IXP4XX_EXP_CFG2 = ~value;
+}
+
-+int npe_running(struct npe *npe);
-+int npe_send_message(struct npe *npe, const void *msg, const char *what);
-+int npe_recv_message(struct npe *npe, void *msg, const char *what);
-+int npe_send_recv_message(struct npe *npe, void *msg, const char *what);
-+int npe_load_firmware(struct npe *npe, const char *name, struct device *dev);
-+struct npe *npe_request(int id);
-+void npe_release(struct npe *npe);
-+
-+#endif /* __IXP4XX_NPE_H */
-diff --git a/include/asm-arm/arch-ixp4xx/platform.h b/include/asm-arm/arch-ixp4xx/platform.h
-index 2a44d3d..695b9c4 100644
---- a/include/asm-arm/arch-ixp4xx/platform.h
-+++ b/include/asm-arm/arch-ixp4xx/platform.h
-@@ -77,8 +77,7 @@ extern unsigned long ixp4xx_exp_bus_size;
+ #endif /* _ASM_ARCH_CPU_H */
+diff --git a/include/asm-arm/arch-ixp4xx/hardware.h b/include/asm-arm/arch-ixp4xx/hardware.h
+index 297ceda..73e8dc3 100644
+--- a/include/asm-arm/arch-ixp4xx/hardware.h
++++ b/include/asm-arm/arch-ixp4xx/hardware.h
+@@ -27,13 +27,13 @@
- /*
- * The IXP4xx chips do not have an I2C unit, so GPIO lines are just
-- * used to
-- * Used as platform_data to provide GPIO pin information to the ixp42x
-+ * used as platform_data to provide GPIO pin information to the ixp42x
- * I2C driver.
- */
- struct ixp4xx_i2c_pins {
-@@ -86,6 +85,27 @@ struct ixp4xx_i2c_pins {
- unsigned long scl_pin;
- };
+ #define pcibios_assign_all_busses() 1
-+#define IXP4XX_ETH_NPEA 0x00
-+#define IXP4XX_ETH_NPEB 0x10
-+#define IXP4XX_ETH_NPEC 0x20
++/* Register locations and bits */
++#include "ixp4xx-regs.h"
+
-+/* Information about built-in Ethernet MAC interfaces */
-+struct eth_plat_info {
-+ u8 phy; /* MII PHY ID, 0 - 31 */
-+ u8 rxq; /* configurable, currently 0 - 31 only */
-+ u8 txreadyq;
-+ u8 hwaddr[6];
-+};
+ #ifndef __ASSEMBLER__
+ #include <asm/arch/cpu.h>
+ #endif
+
+-/* Register locations and bits */
+-#include "ixp4xx-regs.h"
+-
+ /* Platform helper functions and definitions */
+ #include "platform.h"
+
+diff --git a/include/asm-arm/arch-ixp4xx/uncompress.h b/include/asm-arm/arch-ixp4xx/uncompress.h
+index f7a35b7..34ef48f 100644
+--- a/include/asm-arm/arch-ixp4xx/uncompress.h
++++ b/include/asm-arm/arch-ixp4xx/uncompress.h
+@@ -13,7 +13,7 @@
+ #ifndef _ARCH_UNCOMPRESS_H_
+ #define _ARCH_UNCOMPRESS_H_
+
+-#include <asm/hardware.h>
++#include "ixp4xx-regs.h"
+ #include <asm/mach-types.h>
+ #include <linux/serial_reg.h>
+
+diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
+index 4de432e..c4c810b 100644
+--- a/arch/arm/kernel/setup.c
++++ b/arch/arm/kernel/setup.c
+@@ -61,6 +61,7 @@ extern int root_mountflags;
+ extern void _stext, _text, _etext, __data_start, _edata, _end;
+
+ unsigned int processor_id;
++EXPORT_SYMBOL(processor_id);
+ unsigned int __machine_arch_type;
+ EXPORT_SYMBOL(__machine_arch_type);
+
+
+
+From: Krzysztof Halasa <khc@pm.waw.pl>
+Subject: Adds drivers for IXP4xx QMgr and NPE features
+
+This patch adds drivers for IXP4xx hardware Queue Manager and for
+Network Processor Engines. Requires patch #4712 (reading/writing
+CPU feature (aka fuse) bits).
+
+Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl>
+--
+PATCH FOLLOWS
+KernelVersion: 2.6.23
+
+diff --git a/arch/arm/mach-ixp4xx/Kconfig b/arch/arm/mach-ixp4xx/Kconfig
+index 61b2dfc..e774447 100644
+--- a/arch/arm/mach-ixp4xx/Kconfig
++++ b/arch/arm/mach-ixp4xx/Kconfig
+@@ -189,6 +189,20 @@ config IXP4XX_INDIRECT_PCI
+ need to use the indirect method instead. If you don't know
+ what you need, leave this option unselected.
+
++config IXP4XX_QMGR
++ tristate "IXP4xx Queue Manager support"
++ help
++ This driver supports IXP4xx built-in hardware queue manager
++ and is automatically selected by Ethernet and HSS drivers.
+
-+/* Information about built-in HSS (synchronous serial) interfaces */
-+struct hss_plat_info {
-+ int (*set_clock)(int port, unsigned int clock_type);
-+ int (*open)(int port, void *pdev,
-+ void (*set_carrier_cb)(void *pdev, int carrier));
-+ void (*close)(int port, void *pdev);
-+ u8 txreadyq;
-+};
++config IXP4XX_NPE
++ tristate "IXP4xx Network Processor Engine support"
++ select HOTPLUG
++ select FW_LOADER
++ help
++ This driver supports IXP4xx built-in network coprocessors
++ and is automatically selected by Ethernet and HSS drivers.
+
- /*
- * This structure provide a means for the board setup code
- * to give information to th pata_ixp4xx driver. It is
+ endmenu
+
+ endif
+diff --git a/arch/arm/mach-ixp4xx/Makefile b/arch/arm/mach-ixp4xx/Makefile
+index 77e00ad..4bb97e1 100644
+--- a/arch/arm/mach-ixp4xx/Makefile
++++ b/arch/arm/mach-ixp4xx/Makefile
+@@ -30,3 +30,5 @@ obj-$(CONFIG_MACH_GATEWAY7001) += gateway7001-setup.o
+ obj-$(CONFIG_MACH_WG302V2) += wg302v2-setup.o
+
+ obj-$(CONFIG_PCI) += $(obj-pci-$(CONFIG_PCI)) common-pci.o
++obj-$(CONFIG_IXP4XX_QMGR) += ixp4xx_qmgr.o
++obj-$(CONFIG_IXP4XX_NPE) += ixp4xx_npe.o
diff --git a/include/asm-arm/arch-ixp4xx/qmgr.h b/include/asm-arm/arch-ixp4xx/qmgr.h
new file mode 100644
index 0000000..1e52b95
@@ -4035,16 +2919,1194 @@ index 0000000..1e52b95
+}
+
+#endif
-diff --git a/include/asm-arm/arch-ixp4xx/uncompress.h b/include/asm-arm/arch-ixp4xx/uncompress.h
-index f7a35b7..34ef48f 100644
---- a/include/asm-arm/arch-ixp4xx/uncompress.h
-+++ b/include/asm-arm/arch-ixp4xx/uncompress.h
-@@ -13,7 +13,7 @@
- #ifndef _ARCH_UNCOMPRESS_H_
- #define _ARCH_UNCOMPRESS_H_
+diff --git a/include/asm-arm/arch-ixp4xx/npe.h b/include/asm-arm/arch-ixp4xx/npe.h
+new file mode 100644
+index 0000000..37d0511
+--- /dev/null
++++ b/include/asm-arm/arch-ixp4xx/npe.h
+@@ -0,0 +1,39 @@
++#ifndef __IXP4XX_NPE_H
++#define __IXP4XX_NPE_H
++
++#include <linux/kernel.h>
++
++extern const char *npe_names[];
++
++struct npe_regs {
++ u32 exec_addr, exec_data, exec_status_cmd, exec_count;
++ u32 action_points[4];
++ u32 watchpoint_fifo, watch_count;
++ u32 profile_count;
++ u32 messaging_status, messaging_control;
++ u32 mailbox_status, /*messaging_*/ in_out_fifo;
++};
++
++struct npe {
++ struct resource *mem_res;
++ struct npe_regs __iomem *regs;
++ u32 regs_phys;
++ int id;
++ int valid;
++};
++
++
++static inline const char *npe_name(struct npe *npe)
++{
++ return npe_names[npe->id];
++}
++
++int npe_running(struct npe *npe);
++int npe_send_message(struct npe *npe, const void *msg, const char *what);
++int npe_recv_message(struct npe *npe, void *msg, const char *what);
++int npe_send_recv_message(struct npe *npe, void *msg, const char *what);
++int npe_load_firmware(struct npe *npe, const char *name, struct device *dev);
++struct npe *npe_request(int id);
++void npe_release(struct npe *npe);
++
++#endif /* __IXP4XX_NPE_H */
+diff --git a/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c b/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c
+new file mode 100644
+index 0000000..e833013
+--- /dev/null
++++ b/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c
+@@ -0,0 +1,274 @@
++/*
++ * Intel IXP4xx Queue Manager driver for Linux
++ *
++ * Copyright (C) 2007 Krzysztof Halasa <khc@pm.waw.pl>
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of version 2 of the GNU General Public License
++ * as published by the Free Software Foundation.
++ */
++
++#include <linux/ioport.h>
++#include <linux/interrupt.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <asm/arch/qmgr.h>
++
++#define DEBUG 0
++
++struct qmgr_regs __iomem *qmgr_regs;
++static struct resource *mem_res;
++static spinlock_t qmgr_lock;
++static u32 used_sram_bitmap[4]; /* 128 16-dword pages */
++static void (*irq_handlers[HALF_QUEUES])(void *pdev);
++static void *irq_pdevs[HALF_QUEUES];
++
++void qmgr_set_irq(unsigned int queue, int src,
++ void (*handler)(void *pdev), void *pdev)
++{
++ u32 __iomem *reg = &qmgr_regs->irqsrc[queue / 8]; /* 8 queues / u32 */
++ int bit = (queue % 8) * 4; /* 3 bits + 1 reserved bit per queue */
++ unsigned long flags;
++
++ src &= 7;
++ spin_lock_irqsave(&qmgr_lock, flags);
++ __raw_writel((__raw_readl(reg) & ~(7 << bit)) | (src << bit), reg);
++ irq_handlers[queue] = handler;
++ irq_pdevs[queue] = pdev;
++ spin_unlock_irqrestore(&qmgr_lock, flags);
++}
++
++
++static irqreturn_t qmgr_irq1(int irq, void *pdev)
++{
++ int i;
++ u32 val = __raw_readl(&qmgr_regs->irqstat[0]);
++ __raw_writel(val, &qmgr_regs->irqstat[0]); /* ACK */
++
++ for (i = 0; i < HALF_QUEUES; i++)
++ if (val & (1 << i))
++ irq_handlers[i](irq_pdevs[i]);
++
++ return val ? IRQ_HANDLED : 0;
++}
++
++
++void qmgr_enable_irq(unsigned int queue)
++{
++ unsigned long flags;
++
++ spin_lock_irqsave(&qmgr_lock, flags);
++ __raw_writel(__raw_readl(&qmgr_regs->irqen[0]) | (1 << queue),
++ &qmgr_regs->irqen[0]);
++ spin_unlock_irqrestore(&qmgr_lock, flags);
++}
++
++void qmgr_disable_irq(unsigned int queue)
++{
++ unsigned long flags;
++
++ spin_lock_irqsave(&qmgr_lock, flags);
++ __raw_writel(__raw_readl(&qmgr_regs->irqen[0]) & ~(1 << queue),
++ &qmgr_regs->irqen[0]);
++ spin_unlock_irqrestore(&qmgr_lock, flags);
++}
++
++static inline void shift_mask(u32 *mask)
++{
++ mask[3] = mask[3] << 1 | mask[2] >> 31;
++ mask[2] = mask[2] << 1 | mask[1] >> 31;
++ mask[1] = mask[1] << 1 | mask[0] >> 31;
++ mask[0] <<= 1;
++}
++
++int qmgr_request_queue(unsigned int queue, unsigned int len /* dwords */,
++ unsigned int nearly_empty_watermark,
++ unsigned int nearly_full_watermark)
++{
++ u32 cfg, addr = 0, mask[4]; /* in 16-dwords */
++ int err;
++
++ if (queue >= HALF_QUEUES)
++ return -ERANGE;
++
++ if ((nearly_empty_watermark | nearly_full_watermark) & ~7)
++ return -EINVAL;
++
++ switch (len) {
++ case 16:
++ cfg = 0 << 24;
++ mask[0] = 0x1;
++ break;
++ case 32:
++ cfg = 1 << 24;
++ mask[0] = 0x3;
++ break;
++ case 64:
++ cfg = 2 << 24;
++ mask[0] = 0xF;
++ break;
++ case 128:
++ cfg = 3 << 24;
++ mask[0] = 0xFF;
++ break;
++ default:
++ return -EINVAL;
++ }
++
++ cfg |= nearly_empty_watermark << 26;
++ cfg |= nearly_full_watermark << 29;
++ len /= 16; /* in 16-dwords: 1, 2, 4 or 8 */
++ mask[1] = mask[2] = mask[3] = 0;
++
++ if (!try_module_get(THIS_MODULE))
++ return -ENODEV;
++
++ spin_lock_irq(&qmgr_lock);
++ if (__raw_readl(&qmgr_regs->sram[queue])) {
++ err = -EBUSY;
++ goto err;
++ }
++
++ while (1) {
++ if (!(used_sram_bitmap[0] & mask[0]) &&
++ !(used_sram_bitmap[1] & mask[1]) &&
++ !(used_sram_bitmap[2] & mask[2]) &&
++ !(used_sram_bitmap[3] & mask[3]))
++ break; /* found free space */
++
++ addr++;
++ shift_mask(mask);
++ if (addr + len > ARRAY_SIZE(qmgr_regs->sram)) {
++ printk(KERN_ERR "qmgr: no free SRAM space for"
++ " queue %i\n", queue);
++ err = -ENOMEM;
++ goto err;
++ }
++ }
++
++ used_sram_bitmap[0] |= mask[0];
++ used_sram_bitmap[1] |= mask[1];
++ used_sram_bitmap[2] |= mask[2];
++ used_sram_bitmap[3] |= mask[3];
++ __raw_writel(cfg | (addr << 14), &qmgr_regs->sram[queue]);
++ spin_unlock_irq(&qmgr_lock);
++
++#if DEBUG
++ printk(KERN_DEBUG "qmgr: requested queue %i, addr = 0x%02X\n",
++ queue, addr);
++#endif
++ return 0;
++
++err:
++ spin_unlock_irq(&qmgr_lock);
++ module_put(THIS_MODULE);
++ return err;
++}
++
++void qmgr_release_queue(unsigned int queue)
++{
++ u32 cfg, addr, mask[4];
++
++ BUG_ON(queue >= HALF_QUEUES); /* not in valid range */
++
++ spin_lock_irq(&qmgr_lock);
++ cfg = __raw_readl(&qmgr_regs->sram[queue]);
++ addr = (cfg >> 14) & 0xFF;
++
++ BUG_ON(!addr); /* not requested */
++
++ switch ((cfg >> 24) & 3) {
++ case 0: mask[0] = 0x1; break;
++ case 1: mask[0] = 0x3; break;
++ case 2: mask[0] = 0xF; break;
++ case 3: mask[0] = 0xFF; break;
++ }
++
++ while (addr--)
++ shift_mask(mask);
++
++ __raw_writel(0, &qmgr_regs->sram[queue]);
++
++ used_sram_bitmap[0] &= ~mask[0];
++ used_sram_bitmap[1] &= ~mask[1];
++ used_sram_bitmap[2] &= ~mask[2];
++ used_sram_bitmap[3] &= ~mask[3];
++ irq_handlers[queue] = NULL; /* catch IRQ bugs */
++ spin_unlock_irq(&qmgr_lock);
++
++ module_put(THIS_MODULE);
++#if DEBUG
++ printk(KERN_DEBUG "qmgr: released queue %i\n", queue);
++#endif
++}
++
++static int qmgr_init(void)
++{
++ int i, err;
++ mem_res = request_mem_region(IXP4XX_QMGR_BASE_PHYS,
++ IXP4XX_QMGR_REGION_SIZE,
++ "IXP4xx Queue Manager");
++ if (mem_res == NULL)
++ return -EBUSY;
++
++ qmgr_regs = ioremap(IXP4XX_QMGR_BASE_PHYS, IXP4XX_QMGR_REGION_SIZE);
++ if (qmgr_regs == NULL) {
++ err = -ENOMEM;
++ goto error_map;
++ }
++
++ /* reset qmgr registers */
++ for (i = 0; i < 4; i++) {
++ __raw_writel(0x33333333, &qmgr_regs->stat1[i]);
++ __raw_writel(0, &qmgr_regs->irqsrc[i]);
++ }
++ for (i = 0; i < 2; i++) {
++ __raw_writel(0, &qmgr_regs->stat2[i]);
++ __raw_writel(0xFFFFFFFF, &qmgr_regs->irqstat[i]); /* clear */
++ __raw_writel(0, &qmgr_regs->irqen[i]);
++ }
++
++ for (i = 0; i < QUEUES; i++)
++ __raw_writel(0, &qmgr_regs->sram[i]);
++
++ err = request_irq(IRQ_IXP4XX_QM1, qmgr_irq1, 0,
++ "IXP4xx Queue Manager", NULL);
++ if (err) {
++ printk(KERN_ERR "qmgr: failed to request IRQ%i\n",
++ IRQ_IXP4XX_QM1);
++ goto error_irq;
++ }
++
++ used_sram_bitmap[0] = 0xF; /* 4 first pages reserved for config */
++ spin_lock_init(&qmgr_lock);
++
++ printk(KERN_INFO "IXP4xx Queue Manager initialized.\n");
++ return 0;
++
++error_irq:
++ iounmap(qmgr_regs);
++error_map:
++ release_mem_region(IXP4XX_QMGR_BASE_PHYS, IXP4XX_QMGR_REGION_SIZE);
++ return err;
++}
++
++static void qmgr_remove(void)
++{
++ free_irq(IRQ_IXP4XX_QM1, NULL);
++ synchronize_irq(IRQ_IXP4XX_QM1);
++ iounmap(qmgr_regs);
++ release_mem_region(IXP4XX_QMGR_BASE_PHYS, IXP4XX_QMGR_REGION_SIZE);
++}
++
++module_init(qmgr_init);
++module_exit(qmgr_remove);
++
++MODULE_LICENSE("GPL v2");
++MODULE_AUTHOR("Krzysztof Halasa");
++
++EXPORT_SYMBOL(qmgr_regs);
++EXPORT_SYMBOL(qmgr_set_irq);
++EXPORT_SYMBOL(qmgr_enable_irq);
++EXPORT_SYMBOL(qmgr_disable_irq);
++EXPORT_SYMBOL(qmgr_request_queue);
++EXPORT_SYMBOL(qmgr_release_queue);
+diff --git a/arch/arm/mach-ixp4xx/ixp4xx_npe.c b/arch/arm/mach-ixp4xx/ixp4xx_npe.c
+new file mode 100644
+index 0000000..83c137e
+--- /dev/null
++++ b/arch/arm/mach-ixp4xx/ixp4xx_npe.c
+@@ -0,0 +1,741 @@
++/*
++ * Intel IXP4xx Network Processor Engine driver for Linux
++ *
++ * Copyright (C) 2007 Krzysztof Halasa <khc@pm.waw.pl>
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of version 2 of the GNU General Public License
++ * as published by the Free Software Foundation.
++ *
++ * The code is based on publicly available information:
++ * - Intel IXP4xx Developer's Manual and other e-papers
++ * - Intel IXP400 Access Library Software (BSD license)
++ * - previous works by Christian Hohnstaedt <chohnstaedt@innominate.com>
++ * Thanks, Christian.
++ */
++
++#include <linux/delay.h>
++#include <linux/dma-mapping.h>
++#include <linux/firmware.h>
++#include <linux/io.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/slab.h>
++#include <asm/arch/npe.h>
++
++#define DEBUG_MSG 0
++#define DEBUG_FW 0
++
++#define NPE_COUNT 3
++#define MAX_RETRIES 1000 /* microseconds */
++#define NPE_42X_DATA_SIZE 0x800 /* in dwords */
++#define NPE_46X_DATA_SIZE 0x1000
++#define NPE_A_42X_INSTR_SIZE 0x1000
++#define NPE_B_AND_C_42X_INSTR_SIZE 0x800
++#define NPE_46X_INSTR_SIZE 0x1000
++#define REGS_SIZE 0x1000
++
++#define NPE_PHYS_REG 32
++
++#define FW_MAGIC 0xFEEDF00D
++#define FW_BLOCK_TYPE_INSTR 0x0
++#define FW_BLOCK_TYPE_DATA 0x1
++#define FW_BLOCK_TYPE_EOF 0xF
++
++/* NPE exec status (read) and command (write) */
++#define CMD_NPE_STEP 0x01
++#define CMD_NPE_START 0x02
++#define CMD_NPE_STOP 0x03
++#define CMD_NPE_CLR_PIPE 0x04
++#define CMD_CLR_PROFILE_CNT 0x0C
++#define CMD_RD_INS_MEM 0x10 /* instruction memory */
++#define CMD_WR_INS_MEM 0x11
++#define CMD_RD_DATA_MEM 0x12 /* data memory */
++#define CMD_WR_DATA_MEM 0x13
++#define CMD_RD_ECS_REG 0x14 /* exec access register */
++#define CMD_WR_ECS_REG 0x15
++
++#define STAT_RUN 0x80000000
++#define STAT_STOP 0x40000000
++#define STAT_CLEAR 0x20000000
++#define STAT_ECS_K 0x00800000 /* pipeline clean */
++
++#define NPE_STEVT 0x1B
++#define NPE_STARTPC 0x1C
++#define NPE_REGMAP 0x1E
++#define NPE_CINDEX 0x1F
++
++#define INSTR_WR_REG_SHORT 0x0000C000
++#define INSTR_WR_REG_BYTE 0x00004000
++#define INSTR_RD_FIFO 0x0F888220
++#define INSTR_RESET_MBOX 0x0FAC8210
++
++#define ECS_BG_CTXT_REG_0 0x00 /* Background Executing Context */
++#define ECS_BG_CTXT_REG_1 0x01 /* Stack level */
++#define ECS_BG_CTXT_REG_2 0x02
++#define ECS_PRI_1_CTXT_REG_0 0x04 /* Priority 1 Executing Context */
++#define ECS_PRI_1_CTXT_REG_1 0x05 /* Stack level */
++#define ECS_PRI_1_CTXT_REG_2 0x06
++#define ECS_PRI_2_CTXT_REG_0 0x08 /* Priority 2 Executing Context */
++#define ECS_PRI_2_CTXT_REG_1 0x09 /* Stack level */
++#define ECS_PRI_2_CTXT_REG_2 0x0A
++#define ECS_DBG_CTXT_REG_0 0x0C /* Debug Executing Context */
++#define ECS_DBG_CTXT_REG_1 0x0D /* Stack level */
++#define ECS_DBG_CTXT_REG_2 0x0E
++#define ECS_INSTRUCT_REG 0x11 /* NPE Instruction Register */
++
++#define ECS_REG_0_ACTIVE 0x80000000 /* all levels */
++#define ECS_REG_0_NEXTPC_MASK 0x1FFF0000 /* BG/PRI1/PRI2 levels */
++#define ECS_REG_0_LDUR_BITS 8
++#define ECS_REG_0_LDUR_MASK 0x00000700 /* all levels */
++#define ECS_REG_1_CCTXT_BITS 16
++#define ECS_REG_1_CCTXT_MASK 0x000F0000 /* all levels */
++#define ECS_REG_1_SELCTXT_BITS 0
++#define ECS_REG_1_SELCTXT_MASK 0x0000000F /* all levels */
++#define ECS_DBG_REG_2_IF 0x00100000 /* debug level */
++#define ECS_DBG_REG_2_IE 0x00080000 /* debug level */
++
++/* NPE watchpoint_fifo register bit */
++#define WFIFO_VALID 0x80000000
++
++/* NPE messaging_status register bit definitions */
++#define MSGSTAT_OFNE 0x00010000 /* OutFifoNotEmpty */
++#define MSGSTAT_IFNF 0x00020000 /* InFifoNotFull */
++#define MSGSTAT_OFNF 0x00040000 /* OutFifoNotFull */
++#define MSGSTAT_IFNE 0x00080000 /* InFifoNotEmpty */
++#define MSGSTAT_MBINT 0x00100000 /* Mailbox interrupt */
++#define MSGSTAT_IFINT 0x00200000 /* InFifo interrupt */
++#define MSGSTAT_OFINT 0x00400000 /* OutFifo interrupt */
++#define MSGSTAT_WFINT 0x00800000 /* WatchFifo interrupt */
++
++/* NPE messaging_control register bit definitions */
++#define MSGCTL_OUT_FIFO 0x00010000 /* enable output FIFO */
++#define MSGCTL_IN_FIFO 0x00020000 /* enable input FIFO */
++#define MSGCTL_OUT_FIFO_WRITE 0x01000000 /* enable FIFO + WRITE */
++#define MSGCTL_IN_FIFO_WRITE 0x02000000
++
++/* NPE mailbox_status value for reset */
++#define RESET_MBOX_STAT 0x0000F0F0
++
++const char *npe_names[] = { "NPE-A", "NPE-B", "NPE-C" };
++
++#define print_npe(pri, npe, fmt, ...) \
++ printk(pri "%s: " fmt, npe_name(npe), ## __VA_ARGS__)
++
++#if DEBUG_MSG
++#define debug_msg(npe, fmt, ...) \
++ print_npe(KERN_DEBUG, npe, fmt, ## __VA_ARGS__)
++#else
++#define debug_msg(npe, fmt, ...)
++#endif
++
++static struct {
++ u32 reg, val;
++} ecs_reset[] = {
++ { ECS_BG_CTXT_REG_0, 0xA0000000 },
++ { ECS_BG_CTXT_REG_1, 0x01000000 },
++ { ECS_BG_CTXT_REG_2, 0x00008000 },
++ { ECS_PRI_1_CTXT_REG_0, 0x20000080 },
++ { ECS_PRI_1_CTXT_REG_1, 0x01000000 },
++ { ECS_PRI_1_CTXT_REG_2, 0x00008000 },
++ { ECS_PRI_2_CTXT_REG_0, 0x20000080 },
++ { ECS_PRI_2_CTXT_REG_1, 0x01000000 },
++ { ECS_PRI_2_CTXT_REG_2, 0x00008000 },
++ { ECS_DBG_CTXT_REG_0, 0x20000000 },
++ { ECS_DBG_CTXT_REG_1, 0x00000000 },
++ { ECS_DBG_CTXT_REG_2, 0x001E0000 },
++ { ECS_INSTRUCT_REG, 0x1003C00F },
++};
++
++static struct npe npe_tab[NPE_COUNT] = {
++ {
++ .id = 0,
++ .regs = (struct npe_regs __iomem *)IXP4XX_NPEA_BASE_VIRT,
++ .regs_phys = IXP4XX_NPEA_BASE_PHYS,
++ }, {
++ .id = 1,
++ .regs = (struct npe_regs __iomem *)IXP4XX_NPEB_BASE_VIRT,
++ .regs_phys = IXP4XX_NPEB_BASE_PHYS,
++ }, {
++ .id = 2,
++ .regs = (struct npe_regs __iomem *)IXP4XX_NPEC_BASE_VIRT,
++ .regs_phys = IXP4XX_NPEC_BASE_PHYS,
++ }
++};
++
++int npe_running(struct npe *npe)
++{
++ return (__raw_readl(&npe->regs->exec_status_cmd) & STAT_RUN) != 0;
++}
++
++static void npe_cmd_write(struct npe *npe, u32 addr, int cmd, u32 data)
++{
++ __raw_writel(data, &npe->regs->exec_data);
++ __raw_writel(addr, &npe->regs->exec_addr);
++ __raw_writel(cmd, &npe->regs->exec_status_cmd);
++}
++
++static u32 npe_cmd_read(struct npe *npe, u32 addr, int cmd)
++{
++ __raw_writel(addr, &npe->regs->exec_addr);
++ __raw_writel(cmd, &npe->regs->exec_status_cmd);
++ /* Iintroduce extra read cycles after issuing read command to NPE
++ so that we read the register after the NPE has updated it.
++ This is to overcome race condition between XScale and NPE */
++ __raw_readl(&npe->regs->exec_data);
++ __raw_readl(&npe->regs->exec_data);
++ return __raw_readl(&npe->regs->exec_data);
++}
++
++static void npe_clear_active(struct npe *npe, u32 reg)
++{
++ u32 val = npe_cmd_read(npe, reg, CMD_RD_ECS_REG);
++ npe_cmd_write(npe, reg, CMD_WR_ECS_REG, val & ~ECS_REG_0_ACTIVE);
++}
++
++static void npe_start(struct npe *npe)
++{
++ /* ensure only Background Context Stack Level is active */
++ npe_clear_active(npe, ECS_PRI_1_CTXT_REG_0);
++ npe_clear_active(npe, ECS_PRI_2_CTXT_REG_0);
++ npe_clear_active(npe, ECS_DBG_CTXT_REG_0);
++
++ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd);
++ __raw_writel(CMD_NPE_START, &npe->regs->exec_status_cmd);
++}
++
++static void npe_stop(struct npe *npe)
++{
++ __raw_writel(CMD_NPE_STOP, &npe->regs->exec_status_cmd);
++ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd); /*FIXME?*/
++}
++
++static int __must_check npe_debug_instr(struct npe *npe, u32 instr, u32 ctx,
++ u32 ldur)
++{
++ u32 wc;
++ int i;
++
++ /* set the Active bit, and the LDUR, in the debug level */
++ npe_cmd_write(npe, ECS_DBG_CTXT_REG_0, CMD_WR_ECS_REG,
++ ECS_REG_0_ACTIVE | (ldur << ECS_REG_0_LDUR_BITS));
++
++ /* set CCTXT at ECS DEBUG L3 to specify in which context to execute
++ the instruction, and set SELCTXT at ECS DEBUG Level to specify
++ which context store to access.
++ Debug ECS Level Reg 1 has form 0x000n000n, where n = context number
++ */
++ npe_cmd_write(npe, ECS_DBG_CTXT_REG_1, CMD_WR_ECS_REG,
++ (ctx << ECS_REG_1_CCTXT_BITS) |
++ (ctx << ECS_REG_1_SELCTXT_BITS));
++
++ /* clear the pipeline */
++ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd);
++
++ /* load NPE instruction into the instruction register */
++ npe_cmd_write(npe, ECS_INSTRUCT_REG, CMD_WR_ECS_REG, instr);
++
++ /* we need this value later to wait for completion of NPE execution
++ step */
++ wc = __raw_readl(&npe->regs->watch_count);
++
++ /* issue a Step One command via the Execution Control register */
++ __raw_writel(CMD_NPE_STEP, &npe->regs->exec_status_cmd);
++
++ /* Watch Count register increments when NPE completes an instruction */
++ for (i = 0; i < MAX_RETRIES; i++) {
++ if (wc != __raw_readl(&npe->regs->watch_count))
++ return 0;
++ udelay(1);
++ }
++
++ print_npe(KERN_ERR, npe, "reset: npe_debug_instr(): timeout\n");
++ return -ETIMEDOUT;
++}
++
++static int __must_check npe_logical_reg_write8(struct npe *npe, u32 addr,
++ u8 val, u32 ctx)
++{
++ /* here we build the NPE assembler instruction: mov8 d0, #0 */
++ u32 instr = INSTR_WR_REG_BYTE | /* OpCode */
++ addr << 9 | /* base Operand */
++ (val & 0x1F) << 4 | /* lower 5 bits to immediate data */
++ (val & ~0x1F) << (18 - 5);/* higher 3 bits to CoProc instr. */
++ return npe_debug_instr(npe, instr, ctx, 1); /* execute it */
++}
++
++static int __must_check npe_logical_reg_write16(struct npe *npe, u32 addr,
++ u16 val, u32 ctx)
++{
++ /* here we build the NPE assembler instruction: mov16 d0, #0 */
++ u32 instr = INSTR_WR_REG_SHORT | /* OpCode */
++ addr << 9 | /* base Operand */
++ (val & 0x1F) << 4 | /* lower 5 bits to immediate data */
++ (val & ~0x1F) << (18 - 5);/* higher 11 bits to CoProc instr. */
++ return npe_debug_instr(npe, instr, ctx, 1); /* execute it */
++}
++
++static int __must_check npe_logical_reg_write32(struct npe *npe, u32 addr,
++ u32 val, u32 ctx)
++{
++ /* write in 16 bit steps first the high and then the low value */
++ if (npe_logical_reg_write16(npe, addr, val >> 16, ctx))
++ return -ETIMEDOUT;
++ return npe_logical_reg_write16(npe, addr + 2, val & 0xFFFF, ctx);
++}
++
++static int npe_reset(struct npe *npe)
++{
++ u32 val, ctl, exec_count, ctx_reg2;
++ int i;
++
++ ctl = (__raw_readl(&npe->regs->messaging_control) | 0x3F000000) &
++ 0x3F3FFFFF;
++
++ /* disable parity interrupt */
++ __raw_writel(ctl & 0x3F00FFFF, &npe->regs->messaging_control);
++
++ /* pre exec - debug instruction */
++ /* turn off the halt bit by clearing Execution Count register. */
++ exec_count = __raw_readl(&npe->regs->exec_count);
++ __raw_writel(0, &npe->regs->exec_count);
++ /* ensure that IF and IE are on (temporarily), so that we don't end up
++ stepping forever */
++ ctx_reg2 = npe_cmd_read(npe, ECS_DBG_CTXT_REG_2, CMD_RD_ECS_REG);
++ npe_cmd_write(npe, ECS_DBG_CTXT_REG_2, CMD_WR_ECS_REG, ctx_reg2 |
++ ECS_DBG_REG_2_IF | ECS_DBG_REG_2_IE);
++
++ /* clear the FIFOs */
++ while (__raw_readl(&npe->regs->watchpoint_fifo) & WFIFO_VALID)
++ ;
++ while (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_OFNE)
++ /* read from the outFIFO until empty */
++ print_npe(KERN_DEBUG, npe, "npe_reset: read FIFO = 0x%X\n",
++ __raw_readl(&npe->regs->in_out_fifo));
++
++ while (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNE)
++ /* step execution of the NPE intruction to read inFIFO using
++ the Debug Executing Context stack */
++ if (npe_debug_instr(npe, INSTR_RD_FIFO, 0, 0))
++ return -ETIMEDOUT;
++
++ /* reset the mailbox reg from the XScale side */
++ __raw_writel(RESET_MBOX_STAT, &npe->regs->mailbox_status);
++ /* from NPE side */
++ if (npe_debug_instr(npe, INSTR_RESET_MBOX, 0, 0))
++ return -ETIMEDOUT;
++
++ /* Reset the physical registers in the NPE register file */
++ for (val = 0; val < NPE_PHYS_REG; val++) {
++ if (npe_logical_reg_write16(npe, NPE_REGMAP, val >> 1, 0))
++ return -ETIMEDOUT;
++ /* address is either 0 or 4 */
++ if (npe_logical_reg_write32(npe, (val & 1) * 4, 0, 0))
++ return -ETIMEDOUT;
++ }
++
++ /* Reset the context store = each context's Context Store registers */
++
++ /* Context 0 has no STARTPC. Instead, this value is used to set NextPC
++ for Background ECS, to set where NPE starts executing code */
++ val = npe_cmd_read(npe, ECS_BG_CTXT_REG_0, CMD_RD_ECS_REG);
++ val &= ~ECS_REG_0_NEXTPC_MASK;
++ val |= (0 /* NextPC */ << 16) & ECS_REG_0_NEXTPC_MASK;
++ npe_cmd_write(npe, ECS_BG_CTXT_REG_0, CMD_WR_ECS_REG, val);
++
++ for (i = 0; i < 16; i++) {
++ if (i) { /* Context 0 has no STEVT nor STARTPC */
++ /* STEVT = off, 0x80 */
++ if (npe_logical_reg_write8(npe, NPE_STEVT, 0x80, i))
++ return -ETIMEDOUT;
++ if (npe_logical_reg_write16(npe, NPE_STARTPC, 0, i))
++ return -ETIMEDOUT;
++ }
++ /* REGMAP = d0->p0, d8->p2, d16->p4 */
++ if (npe_logical_reg_write16(npe, NPE_REGMAP, 0x820, i))
++ return -ETIMEDOUT;
++ if (npe_logical_reg_write8(npe, NPE_CINDEX, 0, i))
++ return -ETIMEDOUT;
++ }
++
++ /* post exec */
++ /* clear active bit in debug level */
++ npe_cmd_write(npe, ECS_DBG_CTXT_REG_0, CMD_WR_ECS_REG, 0);
++ /* clear the pipeline */
++ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd);
++ /* restore previous values */
++ __raw_writel(exec_count, &npe->regs->exec_count);
++ npe_cmd_write(npe, ECS_DBG_CTXT_REG_2, CMD_WR_ECS_REG, ctx_reg2);
++
++ /* write reset values to Execution Context Stack registers */
++ for (val = 0; val < ARRAY_SIZE(ecs_reset); val++)
++ npe_cmd_write(npe, ecs_reset[val].reg, CMD_WR_ECS_REG,
++ ecs_reset[val].val);
++
++ /* clear the profile counter */
++ __raw_writel(CMD_CLR_PROFILE_CNT, &npe->regs->exec_status_cmd);
++
++ __raw_writel(0, &npe->regs->exec_count);
++ __raw_writel(0, &npe->regs->action_points[0]);
++ __raw_writel(0, &npe->regs->action_points[1]);
++ __raw_writel(0, &npe->regs->action_points[2]);
++ __raw_writel(0, &npe->regs->action_points[3]);
++ __raw_writel(0, &npe->regs->watch_count);
++
++ val = ixp4xx_read_feature_bits();
++ /* reset the NPE */
++ ixp4xx_write_feature_bits(val &
++ ~(IXP4XX_FEATURE_RESET_NPEA << npe->id));
++ for (i = 0; i < MAX_RETRIES; i++) {
++ if (!(ixp4xx_read_feature_bits() &
++ (IXP4XX_FEATURE_RESET_NPEA << npe->id)))
++ break; /* reset completed */
++ udelay(1);
++ }
++ if (i == MAX_RETRIES)
++ return -ETIMEDOUT;
++
++ /* deassert reset */
++ ixp4xx_write_feature_bits(val |
++ (IXP4XX_FEATURE_RESET_NPEA << npe->id));
++ for (i = 0; i < MAX_RETRIES; i++) {
++ if (ixp4xx_read_feature_bits() &
++ (IXP4XX_FEATURE_RESET_NPEA << npe->id))
++ break; /* NPE is back alive */
++ udelay(1);
++ }
++ if (i == MAX_RETRIES)
++ return -ETIMEDOUT;
++
++ npe_stop(npe);
++
++ /* restore NPE configuration bus Control Register - parity settings */
++ __raw_writel(ctl, &npe->regs->messaging_control);
++ return 0;
++}
++
++
++int npe_send_message(struct npe *npe, const void *msg, const char *what)
++{
++ const u32 *send = msg;
++ int cycles = 0;
++
++ debug_msg(npe, "Trying to send message %s [%08X:%08X]\n",
++ what, send[0], send[1]);
++
++ if (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNE) {
++ debug_msg(npe, "NPE input FIFO not empty\n");
++ return -EIO;
++ }
++
++ __raw_writel(send[0], &npe->regs->in_out_fifo);
++
++ if (!(__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNF)) {
++ debug_msg(npe, "NPE input FIFO full\n");
++ return -EIO;
++ }
++
++ __raw_writel(send[1], &npe->regs->in_out_fifo);
++
++ while ((cycles < MAX_RETRIES) &&
++ (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNE)) {
++ udelay(1);
++ cycles++;
++ }
++
++ if (cycles == MAX_RETRIES) {
++ debug_msg(npe, "Timeout sending message\n");
++ return -ETIMEDOUT;
++ }
++
++ debug_msg(npe, "Sending a message took %i cycles\n", cycles);
++ return 0;
++}
++
++int npe_recv_message(struct npe *npe, void *msg, const char *what)
++{
++ u32 *recv = msg;
++ int cycles = 0, cnt = 0;
++
++ debug_msg(npe, "Trying to receive message %s\n", what);
++
++ while (cycles < MAX_RETRIES) {
++ if (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_OFNE) {
++ recv[cnt++] = __raw_readl(&npe->regs->in_out_fifo);
++ if (cnt == 2)
++ break;
++ } else {
++ udelay(1);
++ cycles++;
++ }
++ }
++
++ switch(cnt) {
++ case 1:
++ debug_msg(npe, "Received [%08X]\n", recv[0]);
++ break;
++ case 2:
++ debug_msg(npe, "Received [%08X:%08X]\n", recv[0], recv[1]);
++ break;
++ }
++
++ if (cycles == MAX_RETRIES) {
++ debug_msg(npe, "Timeout waiting for message\n");
++ return -ETIMEDOUT;
++ }
++
++ debug_msg(npe, "Receiving a message took %i cycles\n", cycles);
++ return 0;
++}
++
++int npe_send_recv_message(struct npe *npe, void *msg, const char *what)
++{
++ int result;
++ u32 *send = msg, recv[2];
++
++ if ((result = npe_send_message(npe, msg, what)) != 0)
++ return result;
++ if ((result = npe_recv_message(npe, recv, what)) != 0)
++ return result;
++
++ if ((recv[0] != send[0]) || (recv[1] != send[1])) {
++ debug_msg(npe, "Message %s: unexpected message received\n",
++ what);
++ return -EIO;
++ }
++ return 0;
++}
++
++
++int npe_load_firmware(struct npe *npe, const char *name, struct device *dev)
++{
++ const struct firmware *fw_entry;
++
++ struct dl_block {
++ u32 type;
++ u32 offset;
++ } *blk;
++
++ struct dl_image {
++ u32 magic;
++ u32 id;
++ u32 size;
++ union {
++ u32 data[0];
++ struct dl_block blocks[0];
++ };
++ } *image;
++
++ struct dl_codeblock {
++ u32 npe_addr;
++ u32 size;
++ u32 data[0];
++ } *cb;
++
++ int i, j, err, data_size, instr_size, blocks, table_end;
++ u32 cmd;
++
++ if ((err = request_firmware(&fw_entry, name, dev)) != 0)
++ return err;
++
++ err = -EINVAL;
++ if (fw_entry->size < sizeof(struct dl_image)) {
++ print_npe(KERN_ERR, npe, "incomplete firmware file\n");
++ goto err;
++ }
++ image = (struct dl_image*)fw_entry->data;
++
++#if DEBUG_FW
++ print_npe(KERN_DEBUG, npe, "firmware: %08X %08X %08X (0x%X bytes)\n",
++ image->magic, image->id, image->size, image->size * 4);
++#endif
++
++ if (image->magic == swab32(FW_MAGIC)) { /* swapped file */
++ image->id = swab32(image->id);
++ image->size = swab32(image->size);
++ } else if (image->magic != FW_MAGIC) {
++ print_npe(KERN_ERR, npe, "bad firmware file magic: 0x%X\n",
++ image->magic);
++ goto err;
++ }
++ if ((image->size * 4 + sizeof(struct dl_image)) != fw_entry->size) {
++ print_npe(KERN_ERR, npe,
++ "inconsistent size of firmware file\n");
++ goto err;
++ }
++ if (((image->id >> 24) & 0xF /* NPE ID */) != npe->id) {
++ print_npe(KERN_ERR, npe, "firmware file NPE ID mismatch\n");
++ goto err;
++ }
++ if (image->magic == swab32(FW_MAGIC))
++ for (i = 0; i < image->size; i++)
++ image->data[i] = swab32(image->data[i]);
++
++ if (!cpu_is_ixp46x() && ((image->id >> 28) & 0xF /* device ID */)) {
++ print_npe(KERN_INFO, npe, "IXP46x firmware ignored on "
++ "IXP42x\n");
++ goto err;
++ }
++
++ if (npe_running(npe)) {
++ print_npe(KERN_INFO, npe, "unable to load firmware, NPE is "
++ "already running\n");
++ err = -EBUSY;
++ goto err;
++ }
++#if 0
++ npe_stop(npe);
++ npe_reset(npe);
++#endif
++
++ print_npe(KERN_INFO, npe, "firmware functionality 0x%X, "
++ "revision 0x%X:%X\n", (image->id >> 16) & 0xFF,
++ (image->id >> 8) & 0xFF, image->id & 0xFF);
++
++ if (!cpu_is_ixp46x()) {
++ if (!npe->id)
++ instr_size = NPE_A_42X_INSTR_SIZE;
++ else
++ instr_size = NPE_B_AND_C_42X_INSTR_SIZE;
++ data_size = NPE_42X_DATA_SIZE;
++ } else {
++ instr_size = NPE_46X_INSTR_SIZE;
++ data_size = NPE_46X_DATA_SIZE;
++ }
++
++ for (blocks = 0; blocks * sizeof(struct dl_block) / 4 < image->size;
++ blocks++)
++ if (image->blocks[blocks].type == FW_BLOCK_TYPE_EOF)
++ break;
++ if (blocks * sizeof(struct dl_block) / 4 >= image->size) {
++ print_npe(KERN_INFO, npe, "firmware EOF block marker not "
++ "found\n");
++ goto err;
++ }
++
++#if DEBUG_FW
++ print_npe(KERN_DEBUG, npe, "%i firmware blocks found\n", blocks);
++#endif
++
++ table_end = blocks * sizeof(struct dl_block) / 4 + 1 /* EOF marker */;
++ for (i = 0, blk = image->blocks; i < blocks; i++, blk++) {
++ if (blk->offset > image->size - sizeof(struct dl_codeblock) / 4
++ || blk->offset < table_end) {
++ print_npe(KERN_INFO, npe, "invalid offset 0x%X of "
++ "firmware block #%i\n", blk->offset, i);
++ goto err;
++ }
++
++ cb = (struct dl_codeblock*)&image->data[blk->offset];
++ if (blk->type == FW_BLOCK_TYPE_INSTR) {
++ if (cb->npe_addr + cb->size > instr_size)
++ goto too_big;
++ cmd = CMD_WR_INS_MEM;
++ } else if (blk->type == FW_BLOCK_TYPE_DATA) {
++ if (cb->npe_addr + cb->size > data_size)
++ goto too_big;
++ cmd = CMD_WR_DATA_MEM;
++ } else {
++ print_npe(KERN_INFO, npe, "invalid firmware block #%i "
++ "type 0x%X\n", i, blk->type);
++ goto err;
++ }
++ if (blk->offset + sizeof(*cb) / 4 + cb->size > image->size) {
++ print_npe(KERN_INFO, npe, "firmware block #%i doesn't "
++ "fit in firmware image: type %c, start 0x%X,"
++ " length 0x%X\n", i,
++ blk->type == FW_BLOCK_TYPE_INSTR ? 'I' : 'D',
++ cb->npe_addr, cb->size);
++ goto err;
++ }
++
++ for (j = 0; j < cb->size; j++)
++ npe_cmd_write(npe, cb->npe_addr + j, cmd, cb->data[j]);
++ }
++
++ npe_start(npe);
++ if (!npe_running(npe))
++ print_npe(KERN_ERR, npe, "unable to start\n");
++ release_firmware(fw_entry);
++ return 0;
++
++too_big:
++ print_npe(KERN_INFO, npe, "firmware block #%i doesn't fit in NPE "
++ "memory: type %c, start 0x%X, length 0x%X\n", i,
++ blk->type == FW_BLOCK_TYPE_INSTR ? 'I' : 'D',
++ cb->npe_addr, cb->size);
++err:
++ release_firmware(fw_entry);
++ return err;
++}
++
++
++struct npe *npe_request(int id)
++{
++ if (id < NPE_COUNT)
++ if (npe_tab[id].valid)
++ if (try_module_get(THIS_MODULE))
++ return &npe_tab[id];
++ return NULL;
++}
++
++void npe_release(struct npe *npe)
++{
++ module_put(THIS_MODULE);
++}
++
++
++static int __init npe_init_module(void)
++{
++
++ int i, found = 0;
++
++ for (i = 0; i < NPE_COUNT; i++) {
++ struct npe *npe = &npe_tab[i];
++ if (!(ixp4xx_read_feature_bits() &
++ (IXP4XX_FEATURE_RESET_NPEA << i)))
++ continue; /* NPE already disabled or not present */
++ if (!(npe->mem_res = request_mem_region(npe->regs_phys,
++ REGS_SIZE,
++ npe_name(npe)))) {
++ print_npe(KERN_ERR, npe,
++ "failed to request memory region\n");
++ continue;
++ }
++
++ if (npe_reset(npe))
++ continue;
++ npe->valid = 1;
++ found++;
++ }
++
++ if (!found)
++ return -ENOSYS;
++ return 0;
++}
++
++static void __exit npe_cleanup_module(void)
++{
++ int i;
++
++ for (i = 0; i < NPE_COUNT; i++)
++ if (npe_tab[i].mem_res) {
++ npe_reset(&npe_tab[i]);
++ release_resource(npe_tab[i].mem_res);
++ }
++}
++
++module_init(npe_init_module);
++module_exit(npe_cleanup_module);
++
++MODULE_AUTHOR("Krzysztof Halasa");
++MODULE_LICENSE("GPL v2");
++
++EXPORT_SYMBOL(npe_names);
++EXPORT_SYMBOL(npe_running);
++EXPORT_SYMBOL(npe_request);
++EXPORT_SYMBOL(npe_release);
++EXPORT_SYMBOL(npe_load_firmware);
++EXPORT_SYMBOL(npe_send_message);
++EXPORT_SYMBOL(npe_recv_message);
++EXPORT_SYMBOL(npe_send_recv_message);
+
+
+From 35acb53f356e80efad803b9460986d9786dc9b96 Mon Sep 17 00:00:00 2001
+From: Krzysztof Halasa <khc@pm.waw.pl>
+Date: Tue, 29 Jan 2008 10:25:57 +1030
+Subject: Headers for IXP4xx built-in Ethernet and WAN drivers (Patch #4714)
+
+Adds platform structs and #defines required by drivers for
+IXP4xx built-in Ethernet and WAN (sync serial) ports.
+
+The actual drivers will reside in drivers/net/arm and
+drivers/net/wan and will be submitted separately.
+
+Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl>
+Signed-off-by: Rod Whitby <rod@whitby.id.au>
+
+PATCH FOLLOWS
+KernelVersion: 2.6.24-git5
+
+diff --git a/include/asm-arm/arch-ixp4xx/platform.h b/include/asm-arm/arch-ixp4xx/platform.h
+index 2ce28e3..a1f2b54 100644
+--- a/include/asm-arm/arch-ixp4xx/platform.h
++++ b/include/asm-arm/arch-ixp4xx/platform.h
+@@ -91,6 +91,27 @@ struct ixp4xx_pata_data {
--#include <asm/hardware.h>
-+#include "ixp4xx-regs.h"
- #include <asm/mach-types.h>
- #include <linux/serial_reg.h>
+ struct sys_timer;
+
++#define IXP4XX_ETH_NPEA 0x00
++#define IXP4XX_ETH_NPEB 0x10
++#define IXP4XX_ETH_NPEC 0x20
++
++/* Information about built-in Ethernet MAC interfaces */
++struct eth_plat_info {
++ u8 phy; /* MII PHY ID, 0 - 31 */
++ u8 rxq; /* configurable, currently 0 - 31 only */
++ u8 txreadyq;
++ u8 hwaddr[6];
++};
++
++/* Information about built-in HSS (synchronous serial) interfaces */
++struct hss_plat_info {
++ int (*set_clock)(int port, unsigned int clock_type);
++ int (*open)(int port, void *pdev,
++ void (*set_carrier_cb)(void *pdev, int carrier));
++ void (*close)(int port, void *pdev);
++ u8 txreadyq;
++};
++
+ /*
+ * Frequency of clock used for primary clocksource
+ */
+--
+1.5.2.5
+
+From 5a5be39c6411f2d6d8cead614f3f71af9fa4b4b4 Mon Sep 17 00:00:00 2001
+From: Krzysztof Halasa <khc@pm.waw.pl>
+Date: Fri, 1 Feb 2008 11:37:47 +1030
+Subject: Ethernet support for IXDP425 boards (Patch #4715)
+
+Adds IXDP425 platform support for two built-in 10/100 Ethernet ports.
+
+This patch will do nothing until the actual Ethernet driver is
+also included.
+
+Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl>
+--
+PATCH FOLLOWS
+KernelVersion: 2.6.23
+
+diff --git a/arch/arm/mach-ixp4xx/ixdp425-setup.c b/arch/arm/mach-ixp4xx/ixdp425-setup.c
+index e89070d..44584af 100644
+--- a/arch/arm/mach-ixp4xx/ixdp425-setup.c
++++ b/arch/arm/mach-ixp4xx/ixdp425-setup.c
+@@ -177,6 +177,31 @@ static struct platform_device ixdp425_uart = {
+ .resource = ixdp425_uart_resources
+ };
++/* Built-in 10/100 Ethernet MAC interfaces */
++static struct eth_plat_info ixdp425_plat_eth[] = {
++ {
++ .phy = 0,
++ .rxq = 3,
++ .txreadyq = 20,
++ }, {
++ .phy = 1,
++ .rxq = 4,
++ .txreadyq = 21,
++ }
++};
++
++static struct platform_device ixdp425_eth[] = {
++ {
++ .name = "ixp4xx_eth",
++ .id = IXP4XX_ETH_NPEB,
++ .dev.platform_data = ixdp425_plat_eth,
++ }, {
++ .name = "ixp4xx_eth",
++ .id = IXP4XX_ETH_NPEC,
++ .dev.platform_data = ixdp425_plat_eth + 1,
++ }
++};
++
+ static struct platform_device *ixdp425_devices[] __initdata = {
+ &ixdp425_i2c_gpio,
+ &ixdp425_flash,
+@@ -184,7 +209,9 @@ static struct platform_device *ixdp425_devices[] __initdata = {
+ defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
+ &ixdp425_flash_nand,
+ #endif
+- &ixdp425_uart
++ &ixdp425_uart,
++ &ixdp425_eth[0],
++ &ixdp425_eth[1],
+ };
+
+ static void __init ixdp425_init(void)
+--
+1.5.2.5
+