+++ /dev/null
-/*****************************************************************************
- ** 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;
-}
-
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