diff options
Diffstat (limited to 'package/kernel/lantiq/ltq-hcd/src/ifxhcd_queue.c')
| -rw-r--r-- | package/kernel/lantiq/ltq-hcd/src/ifxhcd_queue.c | 485 |
1 files changed, 485 insertions, 0 deletions
diff --git a/package/kernel/lantiq/ltq-hcd/src/ifxhcd_queue.c b/package/kernel/lantiq/ltq-hcd/src/ifxhcd_queue.c new file mode 100644 index 0000000..a30fcd0 --- /dev/null +++ b/package/kernel/lantiq/ltq-hcd/src/ifxhcd_queue.c @@ -0,0 +1,485 @@ +/***************************************************************************** + ** FILE NAME : ifxhcd_queue.c + ** PROJECT : IFX USB sub-system V3 + ** MODULES : IFX USB sub-system Host and Device driver + ** SRC VERSION : 3.2 + ** DATE : 1/Jan/2011 + ** AUTHOR : Chen, Howard + ** DESCRIPTION : This file contains the functions to manage Queue Heads and Queue + ** Transfer Descriptors. + ** FUNCTIONS : + ** COMPILER : gcc + ** REFERENCE : Synopsys DWC-OTG Driver 2.7 + ** COPYRIGHT : Copyright (c) 2010 + ** LANTIQ DEUTSCHLAND GMBH, + ** Am Campeon 3, 85579 Neubiberg, Germany + ** + ** This program is free software; you can redistribute it and/or modify + ** it under the terms of the GNU General Public License as published by + ** the Free Software Foundation; either version 2 of the License, or + ** (at your option) any later version. + ** + ** Version Control Section ** + ** $Author$ + ** $Date$ + ** $Revisions$ + ** $Log$ Revision history + *****************************************************************************/ + +/* + * This file contains code fragments from Synopsys HS OTG Linux Software Driver. + * For this code the following notice is applicable: + * + * ========================================================================== + * + * Synopsys HS OTG Linux Software Driver and documentation (hereinafter, + * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless + * otherwise expressly agreed to in writing between Synopsys and you. + * + * The Software IS NOT an item of Licensed Software or Licensed Product under + * any End User Software License Agreement or Agreement for Licensed Product + * with Synopsys or any supplement thereto. You are permitted to use and + * redistribute this Software in source and binary forms, with or without + * modification, provided that redistributions of source code must retain this + * notice. You may not view, use, disclose, copy or distribute this file or + * any information contained herein except pursuant to this license grant from + * Synopsys. If you do not agree with this notice, including the disclaimer + * below, then you are not authorized to use the Software. + * + * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * ========================================================================== */ + +/*! + \file ifxhcd_queue.c + \ingroup IFXUSB_DRIVER_V3 + \brief This file contains the functions to manage Queue Heads and Queue + Transfer Descriptors. +*/ +#include <linux/version.h> +#include "ifxusb_version.h" + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/init.h> +#include <linux/device.h> +#include <linux/errno.h> +#include <linux/list.h> +#include <linux/interrupt.h> +#include <linux/string.h> + +#include "ifxusb_plat.h" +#include "ifxusb_regs.h" +#include "ifxusb_cif.h" +#include "ifxhcd.h" + +#ifdef __EPQD_DESTROY_TIMEOUT__ + #define epqh_self_destroy_timeout 300 + static void eqph_destroy_func(unsigned long _ptr) + { + ifxhcd_epqh_t *epqh=(ifxhcd_epqh_t *)_ptr; + if(epqh) + { + if(epqh->sysep) + { + epqh->sysep->hcpriv=NULL; + } + ifxhcd_epqh_free (epqh); + } + } +#endif + +/*! + \brief This function allocates and initializes a EPQH. + + \param _ifxhcd The HCD state structure for the USB Host controller. + \param[in] _urb Holds the information about the device/endpoint that we need + to initialize the EPQH. + + \return Returns pointer to the newly allocated EPQH, or NULL on error. + */ +static ifxhcd_epqh_t *ifxhcd_epqh_create (ifxhcd_hcd_t *_ifxhcd, struct urb *_urb) +{ + ifxhcd_epqh_t *epqh; + + hprt0_data_t hprt0; + struct usb_host_endpoint *sysep = ifxhcd_urb_to_endpoint(_urb); + + /* Allocate memory */ +// epqh=(ifxhcd_epqh_t *) kmalloc (sizeof(ifxhcd_epqh_t), GFP_KERNEL); + epqh=(ifxhcd_epqh_t *) kmalloc (sizeof(ifxhcd_epqh_t), GFP_ATOMIC); + + if(epqh == NULL) + return NULL; + + memset (epqh, 0, sizeof (ifxhcd_epqh_t)); + + epqh->sysep=sysep; + + epqh->devno=_urb->dev->devnum; + + epqh->ifxhcd=_ifxhcd; + epqh->phase=EPQH_IDLE; + + /* Initialize EPQH */ + switch (usb_pipetype(_urb->pipe)) + { + case PIPE_CONTROL : epqh->ep_type = IFXUSB_EP_TYPE_CTRL; break; + case PIPE_BULK : epqh->ep_type = IFXUSB_EP_TYPE_BULK; break; + case PIPE_ISOCHRONOUS: epqh->ep_type = IFXUSB_EP_TYPE_ISOC; break; + case PIPE_INTERRUPT : epqh->ep_type = IFXUSB_EP_TYPE_INTR; break; + } + + usb_settoggle(_urb->dev, usb_pipeendpoint (_urb->pipe), !usb_pipein(_urb->pipe), IFXUSB_HC_PID_DATA0); + epqh->mps = usb_maxpacket(_urb->dev, _urb->pipe, !(usb_pipein(_urb->pipe))); + + INIT_LIST_HEAD(&epqh->urbd_list); + #ifdef __STRICT_ORDER__ + INIT_LIST_HEAD(&epqh->release_list); + #endif + INIT_LIST_HEAD(&epqh->ql); + INIT_LIST_HEAD(&epqh->ql_all); + INIT_URBD_LIST(epqh); + + epqh->hc = NULL; + + /* FS/LS Enpoint on HS Hub + * NOT virtual root hub */ + epqh->need_split = 0; + hprt0.d32 = ifxusb_read_hprt0 (&_ifxhcd->core_if); + if (hprt0.b.prtspd == IFXUSB_HPRT0_PRTSPD_HIGH_SPEED && + ((_urb->dev->speed == USB_SPEED_LOW) || + (_urb->dev->speed == USB_SPEED_FULL)) && + (_urb->dev->tt) && (_urb->dev->tt->hub) && (_urb->dev->tt->hub->devnum != 1)) + { + IFX_DEBUGPL(DBG_HCD, "QH init: EP %d: TT found at hub addr %d, for port %d\n", + usb_pipeendpoint(_urb->pipe), _urb->dev->tt->hub->devnum, + _urb->dev->ttport); + epqh->need_split = 1; + } + + if (epqh->ep_type == IFXUSB_EP_TYPE_INTR || + epqh->ep_type == IFXUSB_EP_TYPE_ISOC) + { + /* Compute scheduling parameters once and save them. */ + epqh->interval = _urb->interval; + if(epqh->need_split) + epqh->interval *= 8; + } + + #ifdef __EN_ISOC__ + if (epqh->ep_type == IFXUSB_EP_TYPE_ISOC) + _ifxhcd->isoc_ep_count++; + #endif + + epqh->period_counter=0; + + #ifdef __EPQD_DESTROY_TIMEOUT__ + /* Start a timer for this transfer. */ + init_timer(&epqh->destroy_timer); + epqh->destroy_timer.function = eqph_destroy_func; + epqh->destroy_timer.data = (unsigned long)(epqh); + #endif + + #ifdef __DEBUG__ + IFX_DEBUGPL(DBG_HCD , "IFXUSB HCD EPQH Initialized\n"); + IFX_DEBUGPL(DBG_HCDV, "IFXUSB HCD EPQH - epqh = %p\n", epqh); + IFX_DEBUGPL(DBG_HCDV, "IFXUSB HCD EPQH - Device Address = %d EP %d, %s\n", + _urb->dev->devnum, + usb_pipeendpoint(_urb->pipe), + usb_pipein(_urb->pipe) == USB_DIR_IN ? "IN" : "OUT"); + IFX_DEBUGPL(DBG_HCDV, "IFXUSB HCD EPQH - Speed = %s\n", + ({ char *speed; switch (_urb->dev->speed) { + case USB_SPEED_LOW: speed = "low" ; break; + case USB_SPEED_FULL: speed = "full"; break; + case USB_SPEED_HIGH: speed = "high"; break; + default: speed = "?"; break; + }; speed;})); + IFX_DEBUGPL(DBG_HCDV, "IFXUSB HCD EPQH - Type = %s\n", + ({ + char *type; switch (epqh->ep_type) + { + case IFXUSB_EP_TYPE_ISOC: type = "isochronous"; break; + case IFXUSB_EP_TYPE_INTR: type = "interrupt" ; break; + case IFXUSB_EP_TYPE_CTRL: type = "control" ; break; + case IFXUSB_EP_TYPE_BULK: type = "bulk" ; break; + default: type = "?"; break; + }; + type; + })); + if (epqh->ep_type == IFXUSB_EP_TYPE_INTR) + IFX_DEBUGPL(DBG_HCDV, "IFXUSB HCD EPQH - interval = %d\n", epqh->interval); + #endif + + LOCK_EPQH_LIST_ALL(_ifxhcd); + list_add_tail(&epqh->ql_all, &_ifxhcd->epqh_list_all); + UNLOCK_EPQH_LIST_ALL(_ifxhcd); + + LOCK_EPQH_LIST(_ifxhcd); + switch (epqh->ep_type) + { + case IFXUSB_EP_TYPE_CTRL: + case IFXUSB_EP_TYPE_BULK: + + list_add_tail(&epqh->ql, &_ifxhcd->epqh_list_np); + break; + case IFXUSB_EP_TYPE_INTR: + list_add_tail(&epqh->ql, &_ifxhcd->epqh_list_intr); + break; + #ifdef __EN_ISOC__ + case IFXUSB_EP_TYPE_ISOC: + list_add_tail(&epqh->ql, &_ifxhcd->epqh_list_isoc); + + break; + #endif + } + UNLOCK_EPQH_LIST(_ifxhcd); + return epqh; +} + + + + + + +/*! + \brief Free the EPQH. EPQH should already be removed from a list. + URBD list should already be empty if called from URB Dequeue. + + \param[in] _epqh The EPQH to free. + */ +void ifxhcd_epqh_free (ifxhcd_epqh_t *_epqh) +{ + unsigned long flags; + if(!_epqh) + return; + + if(_epqh->sysep) _epqh->sysep->hcpriv=NULL; + _epqh->sysep=NULL; + + local_irq_save (flags); + if (!list_empty(&_epqh->urbd_list)) + IFX_WARN("%s() invalid epqh state\n",__func__); + else + { + LOCK_EPQH_LIST_ALL(_epqh->ifxhcd); + if (!list_empty(&_epqh->ql_all)) + list_del_init (&_epqh->ql_all); + UNLOCK_EPQH_LIST_ALL(_epqh->ifxhcd); + + LOCK_EPQH_LIST(_epqh->ifxhcd); + if (!list_empty(&_epqh->ql)) + list_del_init (&_epqh->ql); + UNLOCK_EPQH_LIST(_epqh->ifxhcd); + + #ifdef __EPQD_DESTROY_TIMEOUT__ + del_timer(&_epqh->destroy_timer); + #endif + kfree (_epqh); + } + local_irq_restore (flags); +} + + +void ifxhcd_epqh_idle(ifxhcd_epqh_t *_epqh) +{ + unsigned long flags; + local_irq_save(flags); + LOCK_URBD_LIST(_epqh); + if (list_empty(&_epqh->urbd_list)) + { + if(_epqh->ep_type == IFXUSB_EP_TYPE_ISOC || _epqh->ep_type == IFXUSB_EP_TYPE_INTR) + _epqh->phase=EPQH_STDBY; + else + { + _epqh->phase=EPQH_IDLE; + #ifdef __EPQD_DESTROY_TIMEOUT__ + del_timer(&_epqh->destroy_timer); + _epqh->destroy_timer.expires = jiffies + (HZ*epqh_self_destroy_timeout); + add_timer(&_epqh->destroy_timer ); + #endif + } + } + else + { + _epqh->phase=EPQH_READY; + #ifdef __EPQD_DESTROY_TIMEOUT__ + del_timer(&_epqh->destroy_timer); + #endif + } + UNLOCK_URBD_LIST(_epqh); + local_irq_restore(flags); +} + + +void ifxhcd_epqh_idle_periodic(ifxhcd_epqh_t *_epqh) +{ + unsigned long flags; + if(_epqh->ep_type != IFXUSB_EP_TYPE_ISOC && _epqh->ep_type != IFXUSB_EP_TYPE_INTR && _epqh->phase!=EPQH_STDBY) + return; + + local_irq_save(flags); + LOCK_URBD_LIST(_epqh); + if (!list_empty(&_epqh->urbd_list)) + IFX_WARN("%s() invalid epqh state(not empty)\n",__func__); + + _epqh->phase=EPQH_IDLE; + + #ifdef __EPQD_DESTROY_TIMEOUT__ + del_timer(&_epqh->destroy_timer); + _epqh->destroy_timer.expires = jiffies + (HZ*epqh_self_destroy_timeout); + add_timer(&_epqh->destroy_timer ); + #endif + + #ifdef __EN_ISOC__ + if (_epqh->ep_type == IFXUSB_EP_TYPE_ISOC) + _epqh->ifxhcd->isoc_ep_count--; + #endif + UNLOCK_URBD_LIST(_epqh); + local_irq_restore(flags); +} + + +ifxhcd_epqh_t *ifxhcd_urbd_create (ifxhcd_hcd_t *_ifxhcd,struct urb *_urb) +{ + ifxhcd_urbd_t *urbd; + struct usb_host_endpoint *sysep; + ifxhcd_epqh_t *epqh=NULL; + unsigned long flags; + + local_irq_save(flags); + + sysep = ifxhcd_urb_to_endpoint(_urb); + + LOCK_EPQH_LIST_ALL(_ifxhcd); + epqh = sysep_to_epqh(_ifxhcd, sysep); + + if (!epqh) + { + sysep->hcpriv = NULL; + epqh = ifxhcd_epqh_create (_ifxhcd, _urb); + } + UNLOCK_EPQH_LIST_ALL(_ifxhcd); + + if (!epqh) + { + IFX_ERROR("EPQH Error alloc\n"); + local_irq_restore (flags); + return (ifxhcd_epqh_t *)NULL; + } + if(epqh->phase==EPQH_DISABLING) + { + IFX_ERROR("EPQH Error alloc while disabling\n"); + local_irq_restore (flags); + return (ifxhcd_epqh_t *)NULL; + } + sysep->hcpriv = epqh; + + if(_urb->hcpriv) + { + IFX_WARN("%s() Previous urb->hcpriv exist %p\n",__func__,_urb->hcpriv); + #if 1 + local_irq_restore (flags); + return (ifxhcd_epqh_t *)NULL; + #else + urbd = _urb->hcpriv; + if(urbd->epqh!=epqh) + IFX_WARN("%s() Previous urb->hcpriv exist %p and epqh not the same %p %p\n",__func__,_urb->hcpriv,urbd->epqh,epqh); + #endif + } + else + { + urbd = (ifxhcd_urbd_t *) kmalloc (sizeof(ifxhcd_urbd_t), GFP_ATOMIC); + if (!urbd) + { + local_irq_restore (flags); + return (ifxhcd_epqh_t *)NULL; + } + memset (urbd, 0, sizeof (ifxhcd_urbd_t)); + INIT_LIST_HEAD(&urbd->ql); + } + + _urb->hcpriv = urbd; + urbd->urb = _urb; + urbd->epqh = epqh; + urbd->status= -EINPROGRESS; + + urbd->is_in=usb_pipein(_urb->pipe) ? 1 : 0; +#define URB_NO_SETUP_DMA_MAP 0 + #ifdef __EN_ISOC__ + if(epqh->ep_type == IFXUSB_EP_TYPE_ISOC) + { + if(_urb->transfer_flags && URB_NO_TRANSFER_DMA_MAP) + urbd->xfer_buff = (uint8_t *) (KSEG1ADDR((uint32_t *)_urb->transfer_dma)); + else + urbd->xfer_buff = (uint8_t *) _urb->transfer_buffer; + } + else + #endif + { + urbd->xfer_len=_urb->transfer_buffer_length; + if(urbd->xfer_len>0) + { + if(_urb->transfer_flags && URB_NO_TRANSFER_DMA_MAP) + urbd->xfer_buff = (uint8_t *) (KSEG1ADDR((uint32_t *)_urb->transfer_dma)); + else + urbd->xfer_buff = (uint8_t *) _urb->transfer_buffer; + } + } + + #if 1 // cache write-back, so DMA engine can get correct content. Precaution + if(urbd->xfer_len) + dma_cache_wback_inv((unsigned long)urbd->xfer_buff, urbd->xfer_len); + #endif + + if(epqh->ep_type == IFXUSB_EP_TYPE_CTRL) + { + if(_urb->transfer_flags && URB_NO_SETUP_DMA_MAP) + urbd->setup_buff = (uint8_t *) (KSEG1ADDR((uint32_t *)_urb->setup_dma)); + else + urbd->setup_buff = (uint8_t *) _urb->setup_packet; + #if 1 // cache write-back, so DMA engine can get correct content. Precaution + dma_cache_wback_inv((unsigned long)urbd->setup_buff, 16); + #endif + } + + LOCK_URBD_LIST(epqh); + if (!list_empty(&urbd->ql)) + list_del_init(&urbd->ql); + list_add_tail(&urbd->ql, &epqh->urbd_list); + epqh->urbd_count++; + UNLOCK_URBD_LIST(epqh); + + local_irq_restore (flags); + return epqh; +} + + + +ifxhcd_epqh_t * sysep_to_epqh(ifxhcd_hcd_t *_ifxhcd, struct usb_host_endpoint *_sysep) +{ + ifxhcd_epqh_t *epqh; + + LOCK_EPQH_LIST_ALL(_ifxhcd); + list_for_each_entry( epqh, &_ifxhcd->epqh_list_all, ql_all) + { + if(epqh->sysep==_sysep) + { + UNLOCK_EPQH_LIST_ALL(_ifxhcd); + return epqh; + } + } + UNLOCK_EPQH_LIST_ALL(_ifxhcd); + return NULL; +} + |