Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751749Ab0L1FYv (ORCPT ); Tue, 28 Dec 2010 00:24:51 -0500 Received: from sm-d311v.smileserver.ne.jp ([203.211.202.206]:43293 "EHLO sm-d311v.smileserver.ne.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750837Ab0L1FYu (ORCPT ); Tue, 28 Dec 2010 00:24:50 -0500 Message-ID: <4D197433.2000800@dsn.okisemi.com> Date: Tue, 28 Dec 2010 14:22:59 +0900 From: Toshiharu Okada User-Agent: Mozilla/5.0 (X11; U; Linux i686; ja; rv:1.9.1.9) Gecko/20100317 Thunderbird/3.0.4 MIME-Version: 1.0 To: linux-usb , Greg Kroah-Hartman CC: LKML , "Wang, Qi" , "Wang, Yong Y" , Andrew , Intel OTC , "Ewe, Kok Howg" Subject: [PATCH] usb: pch_udc: Fixed issue which does not work with g_serial Content-Type: text/plain; charset=ISO-2022-JP Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 10864 Lines: 308 This patch fixes an issue which does not work with g_serial gadget. Signed-off-by: Toshiharu Okada --- drivers/usb/gadget/pch_udc.c | 117 ++++++++++++++++++++++++------------------ 1 files changed, 67 insertions(+), 50 deletions(-) diff --git a/drivers/usb/gadget/pch_udc.c b/drivers/usb/gadget/pch_udc.c index 0c8dd81..dfe927b 100644 --- a/drivers/usb/gadget/pch_udc.c +++ b/drivers/usb/gadget/pch_udc.c @@ -198,10 +198,10 @@ #define PCH_UDC_BRLEN 0x0F /* Burst length */ #define PCH_UDC_THLEN 0x1F /* Threshold length */ /* Value of EP Buffer Size */ -#define UDC_EP0IN_BUFF_SIZE 64 -#define UDC_EPIN_BUFF_SIZE 512 -#define UDC_EP0OUT_BUFF_SIZE 64 -#define UDC_EPOUT_BUFF_SIZE 512 +#define UDC_EP0IN_BUFF_SIZE 16 +#define UDC_EPIN_BUFF_SIZE 256 +#define UDC_EP0OUT_BUFF_SIZE 16 +#define UDC_EPOUT_BUFF_SIZE 256 /* Value of EP maximum packet size */ #define UDC_EP0IN_MAX_PKT_SIZE 64 #define UDC_EP0OUT_MAX_PKT_SIZE 64 @@ -351,7 +351,7 @@ struct pch_udc_dev { struct pci_pool *data_requests; struct pci_pool *stp_requests; dma_addr_t dma_addr; - unsigned long ep0out_buf[64]; + void *ep0out_buf; struct usb_ctrlrequest setup_data; unsigned long phys_addr; void __iomem *base_addr; @@ -1219,11 +1219,11 @@ static void complete_req(struct pch_udc_ep *ep, struct pch_udc_request *req, dev = ep->dev; if (req->dma_mapped) { if (ep->in) - pci_unmap_single(dev->pdev, req->req.dma, - req->req.length, PCI_DMA_TODEVICE); + dma_unmap_single(&dev->pdev->dev, req->req.dma, + req->req.length, DMA_TO_DEVICE); else - pci_unmap_single(dev->pdev, req->req.dma, - req->req.length, PCI_DMA_FROMDEVICE); + dma_unmap_single(&dev->pdev->dev, req->req.dma, + req->req.length, DMA_FROM_DEVICE); req->dma_mapped = 0; req->req.dma = DMA_ADDR_INVALID; } @@ -1414,7 +1414,6 @@ static void pch_udc_start_rxrequest(struct pch_udc_ep *ep, pch_udc_clear_dma(ep->dev, DMA_DIR_RX); td_data = req->td_data; - ep->td_data = req->td_data; /* Set the status bits for all descriptors */ while (1) { td_data->status = (td_data->status & ~PCH_UDC_BUFF_STS) | @@ -1613,15 +1612,19 @@ static int pch_udc_pcd_queue(struct usb_ep *usbep, struct usb_request *usbreq, if (usbreq->length && ((usbreq->dma == DMA_ADDR_INVALID) || !usbreq->dma)) { if (ep->in) - usbreq->dma = pci_map_single(dev->pdev, usbreq->buf, - usbreq->length, PCI_DMA_TODEVICE); + usbreq->dma = dma_map_single(&dev->pdev->dev, + usbreq->buf, + usbreq->length, + DMA_TO_DEVICE); else - usbreq->dma = pci_map_single(dev->pdev, usbreq->buf, - usbreq->length, PCI_DMA_FROMDEVICE); + usbreq->dma = dma_map_single(&dev->pdev->dev, + usbreq->buf, + usbreq->length, + DMA_FROM_DEVICE); req->dma_mapped = 1; } if (usbreq->length > 0) { - retval = prepare_dma(ep, req, gfp); + retval = prepare_dma(ep, req, GFP_ATOMIC); if (retval) goto probe_end; } @@ -1646,7 +1649,6 @@ static int pch_udc_pcd_queue(struct usb_ep *usbep, struct usb_request *usbreq, pch_udc_wait_ep_stall(ep); pch_udc_ep_clear_nak(ep); pch_udc_enable_ep_interrupts(ep->dev, (1 << ep->num)); - pch_udc_set_dma(dev, DMA_DIR_TX); } } /* Now add this request to the ep's pending requests */ @@ -1926,6 +1928,7 @@ static void pch_udc_complete_receiver(struct pch_udc_ep *ep) PCH_UDC_BS_DMA_DONE) return; pch_udc_clear_dma(ep->dev, DMA_DIR_RX); + pch_udc_ep_set_ddptr(ep, 0); if ((req->td_data_last->status & PCH_UDC_RXTX_STS) != PCH_UDC_RTS_SUCC) { dev_err(&dev->pdev->dev, "Invalid RXTX status (0x%08x) " @@ -1963,7 +1966,7 @@ static void pch_udc_svc_data_in(struct pch_udc_dev *dev, int ep_num) u32 epsts; struct pch_udc_ep *ep; - ep = &dev->ep[2*ep_num]; + ep = &dev->ep[UDC_EPIN_IDX(ep_num)]; epsts = ep->epsts; ep->epsts = 0; @@ -2008,7 +2011,7 @@ static void pch_udc_svc_data_out(struct pch_udc_dev *dev, int ep_num) struct pch_udc_ep *ep; struct pch_udc_request *req = NULL; - ep = &dev->ep[2*ep_num + 1]; + ep = &dev->ep[UDC_EPOUT_IDX(ep_num)]; epsts = ep->epsts; ep->epsts = 0; @@ -2025,10 +2028,11 @@ static void pch_udc_svc_data_out(struct pch_udc_dev *dev, int ep_num) } if (epsts & UDC_EPSTS_HE) return; - if (epsts & UDC_EPSTS_RSS) + if (epsts & UDC_EPSTS_RSS) { pch_udc_ep_set_stall(ep); pch_udc_enable_ep_interrupts(ep->dev, PCH_UDC_EPINT(ep->in, ep->num)); + } if (epsts & UDC_EPSTS_RCS) { if (!dev->prot_stall) { pch_udc_ep_clear_stall(ep); @@ -2060,8 +2064,10 @@ static void pch_udc_svc_control_in(struct pch_udc_dev *dev) { u32 epsts; struct pch_udc_ep *ep; + struct pch_udc_ep *ep_out; ep = &dev->ep[UDC_EP0IN_IDX]; + ep_out = &dev->ep[UDC_EP0OUT_IDX]; epsts = ep->epsts; ep->epsts = 0; @@ -2073,8 +2079,16 @@ static void pch_udc_svc_control_in(struct pch_udc_dev *dev) return; if (epsts & UDC_EPSTS_HE) return; - if ((epsts & UDC_EPSTS_TDC) && (!dev->stall)) + if ((epsts & UDC_EPSTS_TDC) && (!dev->stall)) { pch_udc_complete_transfer(ep); + pch_udc_clear_dma(dev, DMA_DIR_RX); + ep_out->td_data->status = (ep_out->td_data->status & + ~PCH_UDC_BUFF_STS) | + PCH_UDC_BS_HST_RDY; + pch_udc_ep_clear_nak(ep_out); + pch_udc_set_dma(dev, DMA_DIR_RX); + pch_udc_ep_set_rrdy(ep_out); + } /* On IN interrupt, provide data if we have any */ if ((epsts & UDC_EPSTS_IN) && !(epsts & UDC_EPSTS_TDC) && !(epsts & UDC_EPSTS_TXEMPTY)) @@ -2102,11 +2116,9 @@ static void pch_udc_svc_control_out(struct pch_udc_dev *dev) dev->stall = 0; dev->ep[UDC_EP0IN_IDX].halted = 0; dev->ep[UDC_EP0OUT_IDX].halted = 0; - /* In data not ready */ - pch_udc_ep_set_nak(&(dev->ep[UDC_EP0IN_IDX])); dev->setup_data = ep->td_stp->request; pch_udc_init_setup_buff(ep->td_stp); - pch_udc_clear_dma(dev, DMA_DIR_TX); + pch_udc_clear_dma(dev, DMA_DIR_RX); pch_udc_ep_fifo_flush(&(dev->ep[UDC_EP0IN_IDX]), dev->ep[UDC_EP0IN_IDX].in); if ((dev->setup_data.bRequestType & USB_DIR_IN)) @@ -2122,14 +2134,23 @@ static void pch_udc_svc_control_out(struct pch_udc_dev *dev) setup_supported = dev->driver->setup(&dev->gadget, &dev->setup_data); spin_lock(&dev->lock); + + if (dev->setup_data.bRequestType & USB_DIR_IN) { + ep->td_data->status = (ep->td_data->status & + ~PCH_UDC_BUFF_STS) | + PCH_UDC_BS_HST_RDY; + pch_udc_ep_set_ddptr(ep, ep->td_data_phys); + } /* ep0 in returns data on IN phase */ if (setup_supported >= 0 && setup_supported < UDC_EP0IN_MAX_PKT_SIZE) { pch_udc_ep_clear_nak(&(dev->ep[UDC_EP0IN_IDX])); /* Gadget would have queued a request when * we called the setup */ - pch_udc_set_dma(dev, DMA_DIR_RX); - pch_udc_ep_clear_nak(ep); + if (!(dev->setup_data.bRequestType & USB_DIR_IN)) { + pch_udc_set_dma(dev, DMA_DIR_RX); + pch_udc_ep_clear_nak(ep); + } } else if (setup_supported < 0) { /* if unsupported request, then stall */ pch_udc_ep_set_stall(&(dev->ep[UDC_EP0IN_IDX])); @@ -2142,22 +2163,13 @@ static void pch_udc_svc_control_out(struct pch_udc_dev *dev) } } else if ((((stat & UDC_EPSTS_OUT_MASK) >> UDC_EPSTS_OUT_SHIFT) == UDC_EPSTS_OUT_DATA) && !dev->stall) { - if (list_empty(&ep->queue)) { - dev_err(&dev->pdev->dev, "%s: No request\n", __func__); - ep->td_data->status = (ep->td_data->status & - ~PCH_UDC_BUFF_STS) | - PCH_UDC_BS_HST_RDY; - pch_udc_set_dma(dev, DMA_DIR_RX); - } else { - /* control write */ - /* next function will pickuo an clear the status */ + pch_udc_clear_dma(dev, DMA_DIR_RX); + pch_udc_ep_set_ddptr(ep, 0); + if (!list_empty(&ep->queue)) { ep->epsts = stat; - - pch_udc_svc_data_out(dev, 0); - /* re-program desc. pointer for possible ZLPs */ - pch_udc_ep_set_ddptr(ep, ep->td_data_phys); - pch_udc_set_dma(dev, DMA_DIR_RX); + pch_udc_svc_data_out(dev, PCH_UDC_EP0); } + pch_udc_set_dma(dev, DMA_DIR_RX); } pch_udc_ep_set_rrdy(ep); } @@ -2174,7 +2186,7 @@ static void pch_udc_postsvc_epinters(struct pch_udc_dev *dev, int ep_num) struct pch_udc_ep *ep; struct pch_udc_request *req; - ep = &dev->ep[2*ep_num]; + ep = &dev->ep[UDC_EPIN_IDX(ep_num)]; if (!list_empty(&ep->queue)) { req = list_entry(ep->queue.next, struct pch_udc_request, queue); pch_udc_enable_ep_interrupts(ep->dev, @@ -2196,13 +2208,13 @@ static void pch_udc_read_all_epstatus(struct pch_udc_dev *dev, u32 ep_intr) for (i = 0; i < PCH_UDC_USED_EP_NUM; i++) { /* IN */ if (ep_intr & (0x1 << i)) { - ep = &dev->ep[2*i]; + ep = &dev->ep[UDC_EPIN_IDX(i)]; ep->epsts = pch_udc_read_ep_status(ep); pch_udc_clear_ep_status(ep, ep->epsts); } /* OUT */ if (ep_intr & (0x10000 << i)) { - ep = &dev->ep[2*i+1]; + ep = &dev->ep[UDC_EPOUT_IDX(i)]; ep->epsts = pch_udc_read_ep_status(ep); pch_udc_clear_ep_status(ep, ep->epsts); } @@ -2563,9 +2575,6 @@ static void pch_udc_pcd_reinit(struct pch_udc_dev *dev) dev->ep[UDC_EP0IN_IDX].ep.maxpacket = UDC_EP0IN_MAX_PKT_SIZE; dev->ep[UDC_EP0OUT_IDX].ep.maxpacket = UDC_EP0OUT_MAX_PKT_SIZE; - dev->dma_addr = pci_map_single(dev->pdev, dev->ep0out_buf, 256, - PCI_DMA_FROMDEVICE); - /* remove ep0 in and out from the list. They have own pointer */ list_del_init(&dev->ep[UDC_EP0IN_IDX].ep.ep_list); list_del_init(&dev->ep[UDC_EP0OUT_IDX].ep.ep_list); @@ -2637,6 +2646,13 @@ static int init_dma_pools(struct pch_udc_dev *dev) dev->ep[UDC_EP0IN_IDX].td_stp_phys = 0; dev->ep[UDC_EP0IN_IDX].td_data = NULL; dev->ep[UDC_EP0IN_IDX].td_data_phys = 0; + + dev->ep0out_buf = kzalloc(UDC_EP0OUT_BUFF_SIZE * 4, GFP_KERNEL); + if (!dev->ep0out_buf) + return -ENOMEM; + dev->dma_addr = dma_map_single(&dev->pdev->dev, dev->ep0out_buf, + UDC_EP0OUT_BUFF_SIZE * 4, + DMA_FROM_DEVICE); return 0; } @@ -2750,6 +2766,11 @@ static void pch_udc_remove(struct pci_dev *pdev) pci_pool_destroy(dev->stp_requests); } + if (dev->dma_addr) + dma_unmap_single(&dev->pdev->dev, dev->dma_addr, + UDC_EP0OUT_BUFF_SIZE * 4, DMA_FROM_DEVICE); + kfree(dev->ep0out_buf); + pch_udc_exit(dev); if (dev->irq_registered) @@ -2792,11 +2813,7 @@ static int pch_udc_resume(struct pci_dev *pdev) int ret; pci_set_power_state(pdev, PCI_D0); - ret = pci_restore_state(pdev); - if (ret) { - dev_err(&pdev->dev, "%s: pci_restore_state failed\n", __func__); - return ret; - } + pci_restore_state(pdev); ret = pci_enable_device(pdev); if (ret) { dev_err(&pdev->dev, "%s: pci_enable_device failed\n", __func__); -- 1.6.2.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/