From 5e0aa49ec61e888d50727a7e80e87626f745c119 Mon Sep 17 00:00:00 2001 From: Alexander Shishkin Date: Fri, 11 May 2012 17:25:56 +0300 Subject: [PATCH] usb: chipidea: use generic map/unmap routines We're one of the remaining drivers to map/unmap requests by hand. Switch to using generic gadget routines for that instead. Signed-off-by: Alexander Shishkin Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/ci.h | 1 - drivers/usb/chipidea/udc.c | 42 +++++++++----------------------------- drivers/usb/chipidea/udc.h | 2 -- 3 files changed, 10 insertions(+), 35 deletions(-) diff --git a/drivers/usb/chipidea/ci.h b/drivers/usb/chipidea/ci.h index c605acc5568a..8a6872aae79f 100644 --- a/drivers/usb/chipidea/ci.h +++ b/drivers/usb/chipidea/ci.h @@ -21,7 +21,6 @@ /****************************************************************************** * DEFINE *****************************************************************************/ -#define DMA_ADDR_INVALID (~(dma_addr_t)0) #define CI13XXX_PAGE_SIZE 4096ul /* page size for TD's */ #define ENDPT_MAX 32 diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index fb0a91158006..09458d81f300 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -404,36 +404,23 @@ static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq) return -EALREADY; mReq->req.status = -EALREADY; - if (length && mReq->req.dma == DMA_ADDR_INVALID) { - mReq->req.dma = \ - dma_map_single(mEp->device, mReq->req.buf, - length, mEp->dir ? DMA_TO_DEVICE : - DMA_FROM_DEVICE); - if (mReq->req.dma == 0) - return -ENOMEM; - - mReq->map = 1; - } if (mReq->req.zero && length && (length % mEp->ep.maxpacket == 0)) { mReq->zptr = dma_pool_alloc(mEp->td_pool, GFP_ATOMIC, &mReq->zdma); - if (mReq->zptr == NULL) { - if (mReq->map) { - dma_unmap_single(mEp->device, mReq->req.dma, - length, mEp->dir ? DMA_TO_DEVICE : - DMA_FROM_DEVICE); - mReq->req.dma = DMA_ADDR_INVALID; - mReq->map = 0; - } + if (mReq->zptr == NULL) return -ENOMEM; - } + memset(mReq->zptr, 0, sizeof(*mReq->zptr)); mReq->zptr->next = TD_TERMINATE; mReq->zptr->token = TD_STATUS_ACTIVE; if (!mReq->req.no_interrupt) mReq->zptr->token |= TD_IOC; } + ret = usb_gadget_map_request(&udc->gadget, &mReq->req, mEp->dir); + if (ret) + return ret; + /* * TD configuration * TODO - handle requests which spawns into several TDs @@ -514,12 +501,7 @@ static int _hardware_dequeue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq) mReq->req.status = 0; - if (mReq->map) { - dma_unmap_single(mEp->device, mReq->req.dma, mReq->req.length, - mEp->dir ? DMA_TO_DEVICE : DMA_FROM_DEVICE); - mReq->req.dma = DMA_ADDR_INVALID; - mReq->map = 0; - } + usb_gadget_unmap_request(&mEp->udc->gadget, &mReq->req, mEp->dir); mReq->req.status = mReq->ptr->token & TD_STATUS; if ((TD_STATUS_HALTED & mReq->req.status) != 0) @@ -1121,7 +1103,6 @@ static struct usb_request *ep_alloc_request(struct usb_ep *ep, gfp_t gfp_flags) mReq = kzalloc(sizeof(struct ci13xxx_req), gfp_flags); if (mReq != NULL) { INIT_LIST_HEAD(&mReq->queue); - mReq->req.dma = DMA_ADDR_INVALID; mReq->ptr = dma_pool_alloc(mEp->td_pool, gfp_flags, &mReq->dma); @@ -1253,12 +1234,9 @@ static int ep_dequeue(struct usb_ep *ep, struct usb_request *req) /* pop request */ list_del_init(&mReq->queue); - if (mReq->map) { - dma_unmap_single(mEp->device, mReq->req.dma, mReq->req.length, - mEp->dir ? DMA_TO_DEVICE : DMA_FROM_DEVICE); - mReq->req.dma = DMA_ADDR_INVALID; - mReq->map = 0; - } + + usb_gadget_unmap_request(&mEp->udc->gadget, req, mEp->dir); + req->status = -ECONNRESET; if (mReq->req.complete != NULL) { diff --git a/drivers/usb/chipidea/udc.h b/drivers/usb/chipidea/udc.h index e839a2b3b837..4ff2384d7ca8 100644 --- a/drivers/usb/chipidea/udc.h +++ b/drivers/usb/chipidea/udc.h @@ -62,7 +62,6 @@ struct ci13xxx_qh { /** * struct ci13xxx_req - usb request representation * @req: request structure for gadget drivers - * @map: is the request mapped * @queue: link to QH list * @ptr: transfer descriptor for this request * @dma: dma address for the transfer descriptor @@ -71,7 +70,6 @@ struct ci13xxx_qh { */ struct ci13xxx_req { struct usb_request req; - unsigned map; struct list_head queue; struct ci13xxx_td *ptr; dma_addr_t dma; -- 2.34.1