![Bill Pemberton](/assets/img/avatar_default.png)
CONFIG_HOTPLUG is going away as an option so __devexit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Peter Korsgaard <jacmet@sunsite.dk> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Acked-by: Felipe Balbi <balbi@ti.com> Cc: Li Yang <leoli@freescale.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Wan ZongShun <mcuos.com@gmail.com> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2751 lines
63 KiB
C
2751 lines
63 KiB
C
/*
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* driver/usb/gadget/fsl_qe_udc.c
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*
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* Copyright (c) 2006-2008 Freescale Semiconductor, Inc. All rights reserved.
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*
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* Xie Xiaobo <X.Xie@freescale.com>
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* Li Yang <leoli@freescale.com>
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* Based on bareboard code from Shlomi Gridish.
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*
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* Description:
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* Freescle QE/CPM USB Pheripheral Controller Driver
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* The controller can be found on MPC8360, MPC8272, and etc.
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* MPC8360 Rev 1.1 may need QE mircocode update
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#undef USB_TRACE
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/ioport.h>
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/err.h>
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#include <linux/slab.h>
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#include <linux/list.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <linux/moduleparam.h>
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#include <linux/of_address.h>
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#include <linux/of_platform.h>
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#include <linux/dma-mapping.h>
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#include <linux/usb/ch9.h>
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#include <linux/usb/gadget.h>
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#include <linux/usb/otg.h>
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#include <asm/qe.h>
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#include <asm/cpm.h>
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#include <asm/dma.h>
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#include <asm/reg.h>
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#include "fsl_qe_udc.h"
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#define DRIVER_DESC "Freescale QE/CPM USB Device Controller driver"
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#define DRIVER_AUTHOR "Xie XiaoBo"
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#define DRIVER_VERSION "1.0"
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#define DMA_ADDR_INVALID (~(dma_addr_t)0)
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static const char driver_name[] = "fsl_qe_udc";
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static const char driver_desc[] = DRIVER_DESC;
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/*ep name is important in gadget, it should obey the convention of ep_match()*/
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static const char *const ep_name[] = {
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"ep0-control", /* everyone has ep0 */
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/* 3 configurable endpoints */
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"ep1",
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"ep2",
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"ep3",
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};
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static struct usb_endpoint_descriptor qe_ep0_desc = {
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.bLength = USB_DT_ENDPOINT_SIZE,
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.bDescriptorType = USB_DT_ENDPOINT,
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.bEndpointAddress = 0,
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.bmAttributes = USB_ENDPOINT_XFER_CONTROL,
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.wMaxPacketSize = USB_MAX_CTRL_PAYLOAD,
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};
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/********************************************************************
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* Internal Used Function Start
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********************************************************************/
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/*-----------------------------------------------------------------
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* done() - retire a request; caller blocked irqs
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*--------------------------------------------------------------*/
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static void done(struct qe_ep *ep, struct qe_req *req, int status)
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{
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struct qe_udc *udc = ep->udc;
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unsigned char stopped = ep->stopped;
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/* the req->queue pointer is used by ep_queue() func, in which
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* the request will be added into a udc_ep->queue 'd tail
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* so here the req will be dropped from the ep->queue
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*/
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list_del_init(&req->queue);
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/* req.status should be set as -EINPROGRESS in ep_queue() */
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if (req->req.status == -EINPROGRESS)
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req->req.status = status;
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else
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status = req->req.status;
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if (req->mapped) {
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dma_unmap_single(udc->gadget.dev.parent,
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req->req.dma, req->req.length,
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ep_is_in(ep)
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? DMA_TO_DEVICE
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: DMA_FROM_DEVICE);
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req->req.dma = DMA_ADDR_INVALID;
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req->mapped = 0;
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} else
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dma_sync_single_for_cpu(udc->gadget.dev.parent,
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req->req.dma, req->req.length,
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ep_is_in(ep)
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? DMA_TO_DEVICE
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: DMA_FROM_DEVICE);
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if (status && (status != -ESHUTDOWN))
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dev_vdbg(udc->dev, "complete %s req %p stat %d len %u/%u\n",
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ep->ep.name, &req->req, status,
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req->req.actual, req->req.length);
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/* don't modify queue heads during completion callback */
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ep->stopped = 1;
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spin_unlock(&udc->lock);
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/* this complete() should a func implemented by gadget layer,
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* eg fsg->bulk_in_complete() */
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if (req->req.complete)
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req->req.complete(&ep->ep, &req->req);
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spin_lock(&udc->lock);
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ep->stopped = stopped;
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}
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/*-----------------------------------------------------------------
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* nuke(): delete all requests related to this ep
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*--------------------------------------------------------------*/
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static void nuke(struct qe_ep *ep, int status)
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{
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/* Whether this eq has request linked */
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while (!list_empty(&ep->queue)) {
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struct qe_req *req = NULL;
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req = list_entry(ep->queue.next, struct qe_req, queue);
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done(ep, req, status);
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}
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}
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/*---------------------------------------------------------------------------*
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* USB and Endpoint manipulate process, include parameter and register *
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*---------------------------------------------------------------------------*/
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/* @value: 1--set stall 0--clean stall */
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static int qe_eprx_stall_change(struct qe_ep *ep, int value)
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{
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u16 tem_usep;
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u8 epnum = ep->epnum;
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struct qe_udc *udc = ep->udc;
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tem_usep = in_be16(&udc->usb_regs->usb_usep[epnum]);
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tem_usep = tem_usep & ~USB_RHS_MASK;
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if (value == 1)
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tem_usep |= USB_RHS_STALL;
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else if (ep->dir == USB_DIR_IN)
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tem_usep |= USB_RHS_IGNORE_OUT;
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out_be16(&udc->usb_regs->usb_usep[epnum], tem_usep);
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return 0;
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}
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static int qe_eptx_stall_change(struct qe_ep *ep, int value)
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{
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u16 tem_usep;
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u8 epnum = ep->epnum;
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struct qe_udc *udc = ep->udc;
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tem_usep = in_be16(&udc->usb_regs->usb_usep[epnum]);
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tem_usep = tem_usep & ~USB_THS_MASK;
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if (value == 1)
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tem_usep |= USB_THS_STALL;
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else if (ep->dir == USB_DIR_OUT)
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tem_usep |= USB_THS_IGNORE_IN;
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out_be16(&udc->usb_regs->usb_usep[epnum], tem_usep);
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return 0;
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}
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static int qe_ep0_stall(struct qe_udc *udc)
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{
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qe_eptx_stall_change(&udc->eps[0], 1);
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qe_eprx_stall_change(&udc->eps[0], 1);
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udc->ep0_state = WAIT_FOR_SETUP;
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udc->ep0_dir = 0;
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return 0;
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}
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static int qe_eprx_nack(struct qe_ep *ep)
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{
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u8 epnum = ep->epnum;
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struct qe_udc *udc = ep->udc;
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if (ep->state == EP_STATE_IDLE) {
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/* Set the ep's nack */
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clrsetbits_be16(&udc->usb_regs->usb_usep[epnum],
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USB_RHS_MASK, USB_RHS_NACK);
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/* Mask Rx and Busy interrupts */
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clrbits16(&udc->usb_regs->usb_usbmr,
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(USB_E_RXB_MASK | USB_E_BSY_MASK));
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ep->state = EP_STATE_NACK;
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}
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return 0;
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}
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static int qe_eprx_normal(struct qe_ep *ep)
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{
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struct qe_udc *udc = ep->udc;
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if (ep->state == EP_STATE_NACK) {
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clrsetbits_be16(&udc->usb_regs->usb_usep[ep->epnum],
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USB_RTHS_MASK, USB_THS_IGNORE_IN);
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/* Unmask RX interrupts */
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out_be16(&udc->usb_regs->usb_usber,
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USB_E_BSY_MASK | USB_E_RXB_MASK);
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setbits16(&udc->usb_regs->usb_usbmr,
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(USB_E_RXB_MASK | USB_E_BSY_MASK));
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ep->state = EP_STATE_IDLE;
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ep->has_data = 0;
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}
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return 0;
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}
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static int qe_ep_cmd_stoptx(struct qe_ep *ep)
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{
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if (ep->udc->soc_type == PORT_CPM)
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cpm_command(CPM_USB_STOP_TX | (ep->epnum << CPM_USB_EP_SHIFT),
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CPM_USB_STOP_TX_OPCODE);
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else
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qe_issue_cmd(QE_USB_STOP_TX, QE_CR_SUBBLOCK_USB,
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ep->epnum, 0);
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return 0;
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}
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static int qe_ep_cmd_restarttx(struct qe_ep *ep)
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{
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if (ep->udc->soc_type == PORT_CPM)
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cpm_command(CPM_USB_RESTART_TX | (ep->epnum <<
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CPM_USB_EP_SHIFT), CPM_USB_RESTART_TX_OPCODE);
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else
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qe_issue_cmd(QE_USB_RESTART_TX, QE_CR_SUBBLOCK_USB,
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ep->epnum, 0);
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return 0;
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}
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static int qe_ep_flushtxfifo(struct qe_ep *ep)
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{
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struct qe_udc *udc = ep->udc;
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int i;
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i = (int)ep->epnum;
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qe_ep_cmd_stoptx(ep);
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out_8(&udc->usb_regs->usb_uscom,
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USB_CMD_FLUSH_FIFO | (USB_CMD_EP_MASK & (ep->epnum)));
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out_be16(&udc->ep_param[i]->tbptr, in_be16(&udc->ep_param[i]->tbase));
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out_be32(&udc->ep_param[i]->tstate, 0);
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out_be16(&udc->ep_param[i]->tbcnt, 0);
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ep->c_txbd = ep->txbase;
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ep->n_txbd = ep->txbase;
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qe_ep_cmd_restarttx(ep);
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return 0;
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}
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static int qe_ep_filltxfifo(struct qe_ep *ep)
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{
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struct qe_udc *udc = ep->udc;
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out_8(&udc->usb_regs->usb_uscom,
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USB_CMD_STR_FIFO | (USB_CMD_EP_MASK & (ep->epnum)));
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return 0;
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}
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static int qe_epbds_reset(struct qe_udc *udc, int pipe_num)
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{
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struct qe_ep *ep;
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u32 bdring_len;
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struct qe_bd __iomem *bd;
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int i;
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ep = &udc->eps[pipe_num];
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if (ep->dir == USB_DIR_OUT)
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bdring_len = USB_BDRING_LEN_RX;
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else
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bdring_len = USB_BDRING_LEN;
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bd = ep->rxbase;
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for (i = 0; i < (bdring_len - 1); i++) {
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out_be32((u32 __iomem *)bd, R_E | R_I);
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bd++;
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}
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out_be32((u32 __iomem *)bd, R_E | R_I | R_W);
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bd = ep->txbase;
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for (i = 0; i < USB_BDRING_LEN_TX - 1; i++) {
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out_be32(&bd->buf, 0);
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out_be32((u32 __iomem *)bd, 0);
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bd++;
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}
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out_be32((u32 __iomem *)bd, T_W);
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return 0;
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}
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static int qe_ep_reset(struct qe_udc *udc, int pipe_num)
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{
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struct qe_ep *ep;
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u16 tmpusep;
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ep = &udc->eps[pipe_num];
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tmpusep = in_be16(&udc->usb_regs->usb_usep[pipe_num]);
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tmpusep &= ~USB_RTHS_MASK;
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switch (ep->dir) {
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case USB_DIR_BOTH:
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qe_ep_flushtxfifo(ep);
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break;
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case USB_DIR_OUT:
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tmpusep |= USB_THS_IGNORE_IN;
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break;
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case USB_DIR_IN:
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qe_ep_flushtxfifo(ep);
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tmpusep |= USB_RHS_IGNORE_OUT;
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break;
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default:
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break;
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}
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out_be16(&udc->usb_regs->usb_usep[pipe_num], tmpusep);
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qe_epbds_reset(udc, pipe_num);
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return 0;
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}
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static int qe_ep_toggledata01(struct qe_ep *ep)
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{
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ep->data01 ^= 0x1;
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return 0;
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}
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static int qe_ep_bd_init(struct qe_udc *udc, unsigned char pipe_num)
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{
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struct qe_ep *ep = &udc->eps[pipe_num];
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unsigned long tmp_addr = 0;
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struct usb_ep_para __iomem *epparam;
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int i;
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struct qe_bd __iomem *bd;
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int bdring_len;
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if (ep->dir == USB_DIR_OUT)
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bdring_len = USB_BDRING_LEN_RX;
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else
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bdring_len = USB_BDRING_LEN;
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epparam = udc->ep_param[pipe_num];
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/* alloc multi-ram for BD rings and set the ep parameters */
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tmp_addr = cpm_muram_alloc(sizeof(struct qe_bd) * (bdring_len +
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USB_BDRING_LEN_TX), QE_ALIGNMENT_OF_BD);
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if (IS_ERR_VALUE(tmp_addr))
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return -ENOMEM;
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out_be16(&epparam->rbase, (u16)tmp_addr);
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out_be16(&epparam->tbase, (u16)(tmp_addr +
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(sizeof(struct qe_bd) * bdring_len)));
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out_be16(&epparam->rbptr, in_be16(&epparam->rbase));
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out_be16(&epparam->tbptr, in_be16(&epparam->tbase));
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ep->rxbase = cpm_muram_addr(tmp_addr);
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ep->txbase = cpm_muram_addr(tmp_addr + (sizeof(struct qe_bd)
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* bdring_len));
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ep->n_rxbd = ep->rxbase;
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ep->e_rxbd = ep->rxbase;
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ep->n_txbd = ep->txbase;
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ep->c_txbd = ep->txbase;
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ep->data01 = 0; /* data0 */
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/* Init TX and RX bds */
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bd = ep->rxbase;
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for (i = 0; i < bdring_len - 1; i++) {
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out_be32(&bd->buf, 0);
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out_be32((u32 __iomem *)bd, 0);
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bd++;
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}
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out_be32(&bd->buf, 0);
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out_be32((u32 __iomem *)bd, R_W);
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bd = ep->txbase;
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for (i = 0; i < USB_BDRING_LEN_TX - 1; i++) {
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out_be32(&bd->buf, 0);
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out_be32((u32 __iomem *)bd, 0);
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bd++;
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}
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out_be32(&bd->buf, 0);
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out_be32((u32 __iomem *)bd, T_W);
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return 0;
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}
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static int qe_ep_rxbd_update(struct qe_ep *ep)
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{
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unsigned int size;
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int i;
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unsigned int tmp;
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struct qe_bd __iomem *bd;
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unsigned int bdring_len;
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if (ep->rxbase == NULL)
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return -EINVAL;
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bd = ep->rxbase;
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ep->rxframe = kmalloc(sizeof(*ep->rxframe), GFP_ATOMIC);
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if (ep->rxframe == NULL) {
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dev_err(ep->udc->dev, "malloc rxframe failed\n");
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return -ENOMEM;
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}
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qe_frame_init(ep->rxframe);
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if (ep->dir == USB_DIR_OUT)
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bdring_len = USB_BDRING_LEN_RX;
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else
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bdring_len = USB_BDRING_LEN;
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size = (ep->ep.maxpacket + USB_CRC_SIZE + 2) * (bdring_len + 1);
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ep->rxbuffer = kzalloc(size, GFP_ATOMIC);
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if (ep->rxbuffer == NULL) {
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dev_err(ep->udc->dev, "malloc rxbuffer failed,size=%d\n",
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size);
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kfree(ep->rxframe);
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return -ENOMEM;
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}
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ep->rxbuf_d = virt_to_phys((void *)ep->rxbuffer);
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if (ep->rxbuf_d == DMA_ADDR_INVALID) {
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ep->rxbuf_d = dma_map_single(ep->udc->gadget.dev.parent,
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ep->rxbuffer,
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size,
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DMA_FROM_DEVICE);
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ep->rxbufmap = 1;
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} else {
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dma_sync_single_for_device(ep->udc->gadget.dev.parent,
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ep->rxbuf_d, size,
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DMA_FROM_DEVICE);
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ep->rxbufmap = 0;
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}
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size = ep->ep.maxpacket + USB_CRC_SIZE + 2;
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tmp = ep->rxbuf_d;
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tmp = (u32)(((tmp >> 2) << 2) + 4);
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for (i = 0; i < bdring_len - 1; i++) {
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out_be32(&bd->buf, tmp);
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out_be32((u32 __iomem *)bd, (R_E | R_I));
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tmp = tmp + size;
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bd++;
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}
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out_be32(&bd->buf, tmp);
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out_be32((u32 __iomem *)bd, (R_E | R_I | R_W));
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|
return 0;
|
|
}
|
|
|
|
static int qe_ep_register_init(struct qe_udc *udc, unsigned char pipe_num)
|
|
{
|
|
struct qe_ep *ep = &udc->eps[pipe_num];
|
|
struct usb_ep_para __iomem *epparam;
|
|
u16 usep, logepnum;
|
|
u16 tmp;
|
|
u8 rtfcr = 0;
|
|
|
|
epparam = udc->ep_param[pipe_num];
|
|
|
|
usep = 0;
|
|
logepnum = (ep->ep.desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
|
|
usep |= (logepnum << USB_EPNUM_SHIFT);
|
|
|
|
switch (ep->ep.desc->bmAttributes & 0x03) {
|
|
case USB_ENDPOINT_XFER_BULK:
|
|
usep |= USB_TRANS_BULK;
|
|
break;
|
|
case USB_ENDPOINT_XFER_ISOC:
|
|
usep |= USB_TRANS_ISO;
|
|
break;
|
|
case USB_ENDPOINT_XFER_INT:
|
|
usep |= USB_TRANS_INT;
|
|
break;
|
|
default:
|
|
usep |= USB_TRANS_CTR;
|
|
break;
|
|
}
|
|
|
|
switch (ep->dir) {
|
|
case USB_DIR_OUT:
|
|
usep |= USB_THS_IGNORE_IN;
|
|
break;
|
|
case USB_DIR_IN:
|
|
usep |= USB_RHS_IGNORE_OUT;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
out_be16(&udc->usb_regs->usb_usep[pipe_num], usep);
|
|
|
|
rtfcr = 0x30;
|
|
out_8(&epparam->rbmr, rtfcr);
|
|
out_8(&epparam->tbmr, rtfcr);
|
|
|
|
tmp = (u16)(ep->ep.maxpacket + USB_CRC_SIZE);
|
|
/* MRBLR must be divisble by 4 */
|
|
tmp = (u16)(((tmp >> 2) << 2) + 4);
|
|
out_be16(&epparam->mrblr, tmp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qe_ep_init(struct qe_udc *udc,
|
|
unsigned char pipe_num,
|
|
const struct usb_endpoint_descriptor *desc)
|
|
{
|
|
struct qe_ep *ep = &udc->eps[pipe_num];
|
|
unsigned long flags;
|
|
int reval = 0;
|
|
u16 max = 0;
|
|
|
|
max = usb_endpoint_maxp(desc);
|
|
|
|
/* check the max package size validate for this endpoint */
|
|
/* Refer to USB2.0 spec table 9-13,
|
|
*/
|
|
if (pipe_num != 0) {
|
|
switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
|
|
case USB_ENDPOINT_XFER_BULK:
|
|
if (strstr(ep->ep.name, "-iso")
|
|
|| strstr(ep->ep.name, "-int"))
|
|
goto en_done;
|
|
switch (udc->gadget.speed) {
|
|
case USB_SPEED_HIGH:
|
|
if ((max == 128) || (max == 256) || (max == 512))
|
|
break;
|
|
default:
|
|
switch (max) {
|
|
case 4:
|
|
case 8:
|
|
case 16:
|
|
case 32:
|
|
case 64:
|
|
break;
|
|
default:
|
|
case USB_SPEED_LOW:
|
|
goto en_done;
|
|
}
|
|
}
|
|
break;
|
|
case USB_ENDPOINT_XFER_INT:
|
|
if (strstr(ep->ep.name, "-iso")) /* bulk is ok */
|
|
goto en_done;
|
|
switch (udc->gadget.speed) {
|
|
case USB_SPEED_HIGH:
|
|
if (max <= 1024)
|
|
break;
|
|
case USB_SPEED_FULL:
|
|
if (max <= 64)
|
|
break;
|
|
default:
|
|
if (max <= 8)
|
|
break;
|
|
goto en_done;
|
|
}
|
|
break;
|
|
case USB_ENDPOINT_XFER_ISOC:
|
|
if (strstr(ep->ep.name, "-bulk")
|
|
|| strstr(ep->ep.name, "-int"))
|
|
goto en_done;
|
|
switch (udc->gadget.speed) {
|
|
case USB_SPEED_HIGH:
|
|
if (max <= 1024)
|
|
break;
|
|
case USB_SPEED_FULL:
|
|
if (max <= 1023)
|
|
break;
|
|
default:
|
|
goto en_done;
|
|
}
|
|
break;
|
|
case USB_ENDPOINT_XFER_CONTROL:
|
|
if (strstr(ep->ep.name, "-iso")
|
|
|| strstr(ep->ep.name, "-int"))
|
|
goto en_done;
|
|
switch (udc->gadget.speed) {
|
|
case USB_SPEED_HIGH:
|
|
case USB_SPEED_FULL:
|
|
switch (max) {
|
|
case 1:
|
|
case 2:
|
|
case 4:
|
|
case 8:
|
|
case 16:
|
|
case 32:
|
|
case 64:
|
|
break;
|
|
default:
|
|
goto en_done;
|
|
}
|
|
case USB_SPEED_LOW:
|
|
switch (max) {
|
|
case 1:
|
|
case 2:
|
|
case 4:
|
|
case 8:
|
|
break;
|
|
default:
|
|
goto en_done;
|
|
}
|
|
default:
|
|
goto en_done;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
goto en_done;
|
|
}
|
|
} /* if ep0*/
|
|
|
|
spin_lock_irqsave(&udc->lock, flags);
|
|
|
|
/* initialize ep structure */
|
|
ep->ep.maxpacket = max;
|
|
ep->tm = (u8)(desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK);
|
|
ep->ep.desc = desc;
|
|
ep->stopped = 0;
|
|
ep->init = 1;
|
|
|
|
if (pipe_num == 0) {
|
|
ep->dir = USB_DIR_BOTH;
|
|
udc->ep0_dir = USB_DIR_OUT;
|
|
udc->ep0_state = WAIT_FOR_SETUP;
|
|
} else {
|
|
switch (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) {
|
|
case USB_DIR_OUT:
|
|
ep->dir = USB_DIR_OUT;
|
|
break;
|
|
case USB_DIR_IN:
|
|
ep->dir = USB_DIR_IN;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* hardware special operation */
|
|
qe_ep_bd_init(udc, pipe_num);
|
|
if ((ep->tm == USBP_TM_CTL) || (ep->dir == USB_DIR_OUT)) {
|
|
reval = qe_ep_rxbd_update(ep);
|
|
if (reval)
|
|
goto en_done1;
|
|
}
|
|
|
|
if ((ep->tm == USBP_TM_CTL) || (ep->dir == USB_DIR_IN)) {
|
|
ep->txframe = kmalloc(sizeof(*ep->txframe), GFP_ATOMIC);
|
|
if (ep->txframe == NULL) {
|
|
dev_err(udc->dev, "malloc txframe failed\n");
|
|
goto en_done2;
|
|
}
|
|
qe_frame_init(ep->txframe);
|
|
}
|
|
|
|
qe_ep_register_init(udc, pipe_num);
|
|
|
|
/* Now HW will be NAKing transfers to that EP,
|
|
* until a buffer is queued to it. */
|
|
spin_unlock_irqrestore(&udc->lock, flags);
|
|
|
|
return 0;
|
|
en_done2:
|
|
kfree(ep->rxbuffer);
|
|
kfree(ep->rxframe);
|
|
en_done1:
|
|
spin_unlock_irqrestore(&udc->lock, flags);
|
|
en_done:
|
|
dev_err(udc->dev, "failed to initialize %s\n", ep->ep.name);
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline void qe_usb_enable(struct qe_udc *udc)
|
|
{
|
|
setbits8(&udc->usb_regs->usb_usmod, USB_MODE_EN);
|
|
}
|
|
|
|
static inline void qe_usb_disable(struct qe_udc *udc)
|
|
{
|
|
clrbits8(&udc->usb_regs->usb_usmod, USB_MODE_EN);
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------*
|
|
* USB and EP basic manipulate function end *
|
|
*----------------------------------------------------------------------------*/
|
|
|
|
|
|
/******************************************************************************
|
|
UDC transmit and receive process
|
|
******************************************************************************/
|
|
static void recycle_one_rxbd(struct qe_ep *ep)
|
|
{
|
|
u32 bdstatus;
|
|
|
|
bdstatus = in_be32((u32 __iomem *)ep->e_rxbd);
|
|
bdstatus = R_I | R_E | (bdstatus & R_W);
|
|
out_be32((u32 __iomem *)ep->e_rxbd, bdstatus);
|
|
|
|
if (bdstatus & R_W)
|
|
ep->e_rxbd = ep->rxbase;
|
|
else
|
|
ep->e_rxbd++;
|
|
}
|
|
|
|
static void recycle_rxbds(struct qe_ep *ep, unsigned char stopatnext)
|
|
{
|
|
u32 bdstatus;
|
|
struct qe_bd __iomem *bd, *nextbd;
|
|
unsigned char stop = 0;
|
|
|
|
nextbd = ep->n_rxbd;
|
|
bd = ep->e_rxbd;
|
|
bdstatus = in_be32((u32 __iomem *)bd);
|
|
|
|
while (!(bdstatus & R_E) && !(bdstatus & BD_LENGTH_MASK) && !stop) {
|
|
bdstatus = R_E | R_I | (bdstatus & R_W);
|
|
out_be32((u32 __iomem *)bd, bdstatus);
|
|
|
|
if (bdstatus & R_W)
|
|
bd = ep->rxbase;
|
|
else
|
|
bd++;
|
|
|
|
bdstatus = in_be32((u32 __iomem *)bd);
|
|
if (stopatnext && (bd == nextbd))
|
|
stop = 1;
|
|
}
|
|
|
|
ep->e_rxbd = bd;
|
|
}
|
|
|
|
static void ep_recycle_rxbds(struct qe_ep *ep)
|
|
{
|
|
struct qe_bd __iomem *bd = ep->n_rxbd;
|
|
u32 bdstatus;
|
|
u8 epnum = ep->epnum;
|
|
struct qe_udc *udc = ep->udc;
|
|
|
|
bdstatus = in_be32((u32 __iomem *)bd);
|
|
if (!(bdstatus & R_E) && !(bdstatus & BD_LENGTH_MASK)) {
|
|
bd = ep->rxbase +
|
|
((in_be16(&udc->ep_param[epnum]->rbptr) -
|
|
in_be16(&udc->ep_param[epnum]->rbase))
|
|
>> 3);
|
|
bdstatus = in_be32((u32 __iomem *)bd);
|
|
|
|
if (bdstatus & R_W)
|
|
bd = ep->rxbase;
|
|
else
|
|
bd++;
|
|
|
|
ep->e_rxbd = bd;
|
|
recycle_rxbds(ep, 0);
|
|
ep->e_rxbd = ep->n_rxbd;
|
|
} else
|
|
recycle_rxbds(ep, 1);
|
|
|
|
if (in_be16(&udc->usb_regs->usb_usber) & USB_E_BSY_MASK)
|
|
out_be16(&udc->usb_regs->usb_usber, USB_E_BSY_MASK);
|
|
|
|
if (ep->has_data <= 0 && (!list_empty(&ep->queue)))
|
|
qe_eprx_normal(ep);
|
|
|
|
ep->localnack = 0;
|
|
}
|
|
|
|
static void setup_received_handle(struct qe_udc *udc,
|
|
struct usb_ctrlrequest *setup);
|
|
static int qe_ep_rxframe_handle(struct qe_ep *ep);
|
|
static void ep0_req_complete(struct qe_udc *udc, struct qe_req *req);
|
|
/* when BD PID is setup, handle the packet */
|
|
static int ep0_setup_handle(struct qe_udc *udc)
|
|
{
|
|
struct qe_ep *ep = &udc->eps[0];
|
|
struct qe_frame *pframe;
|
|
unsigned int fsize;
|
|
u8 *cp;
|
|
|
|
pframe = ep->rxframe;
|
|
if ((frame_get_info(pframe) & PID_SETUP)
|
|
&& (udc->ep0_state == WAIT_FOR_SETUP)) {
|
|
fsize = frame_get_length(pframe);
|
|
if (unlikely(fsize != 8))
|
|
return -EINVAL;
|
|
cp = (u8 *)&udc->local_setup_buff;
|
|
memcpy(cp, pframe->data, fsize);
|
|
ep->data01 = 1;
|
|
|
|
/* handle the usb command base on the usb_ctrlrequest */
|
|
setup_received_handle(udc, &udc->local_setup_buff);
|
|
return 0;
|
|
}
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int qe_ep0_rx(struct qe_udc *udc)
|
|
{
|
|
struct qe_ep *ep = &udc->eps[0];
|
|
struct qe_frame *pframe;
|
|
struct qe_bd __iomem *bd;
|
|
u32 bdstatus, length;
|
|
u32 vaddr;
|
|
|
|
pframe = ep->rxframe;
|
|
|
|
if (ep->dir == USB_DIR_IN) {
|
|
dev_err(udc->dev, "ep0 not a control endpoint\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
bd = ep->n_rxbd;
|
|
bdstatus = in_be32((u32 __iomem *)bd);
|
|
length = bdstatus & BD_LENGTH_MASK;
|
|
|
|
while (!(bdstatus & R_E) && length) {
|
|
if ((bdstatus & R_F) && (bdstatus & R_L)
|
|
&& !(bdstatus & R_ERROR)) {
|
|
if (length == USB_CRC_SIZE) {
|
|
udc->ep0_state = WAIT_FOR_SETUP;
|
|
dev_vdbg(udc->dev,
|
|
"receive a ZLP in status phase\n");
|
|
} else {
|
|
qe_frame_clean(pframe);
|
|
vaddr = (u32)phys_to_virt(in_be32(&bd->buf));
|
|
frame_set_data(pframe, (u8 *)vaddr);
|
|
frame_set_length(pframe,
|
|
(length - USB_CRC_SIZE));
|
|
frame_set_status(pframe, FRAME_OK);
|
|
switch (bdstatus & R_PID) {
|
|
case R_PID_SETUP:
|
|
frame_set_info(pframe, PID_SETUP);
|
|
break;
|
|
case R_PID_DATA1:
|
|
frame_set_info(pframe, PID_DATA1);
|
|
break;
|
|
default:
|
|
frame_set_info(pframe, PID_DATA0);
|
|
break;
|
|
}
|
|
|
|
if ((bdstatus & R_PID) == R_PID_SETUP)
|
|
ep0_setup_handle(udc);
|
|
else
|
|
qe_ep_rxframe_handle(ep);
|
|
}
|
|
} else {
|
|
dev_err(udc->dev, "The receive frame with error!\n");
|
|
}
|
|
|
|
/* note: don't clear the rxbd's buffer address */
|
|
recycle_one_rxbd(ep);
|
|
|
|
/* Get next BD */
|
|
if (bdstatus & R_W)
|
|
bd = ep->rxbase;
|
|
else
|
|
bd++;
|
|
|
|
bdstatus = in_be32((u32 __iomem *)bd);
|
|
length = bdstatus & BD_LENGTH_MASK;
|
|
|
|
}
|
|
|
|
ep->n_rxbd = bd;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qe_ep_rxframe_handle(struct qe_ep *ep)
|
|
{
|
|
struct qe_frame *pframe;
|
|
u8 framepid = 0;
|
|
unsigned int fsize;
|
|
u8 *cp;
|
|
struct qe_req *req;
|
|
|
|
pframe = ep->rxframe;
|
|
|
|
if (frame_get_info(pframe) & PID_DATA1)
|
|
framepid = 0x1;
|
|
|
|
if (framepid != ep->data01) {
|
|
dev_err(ep->udc->dev, "the data01 error!\n");
|
|
return -EIO;
|
|
}
|
|
|
|
fsize = frame_get_length(pframe);
|
|
if (list_empty(&ep->queue)) {
|
|
dev_err(ep->udc->dev, "the %s have no requeue!\n", ep->name);
|
|
} else {
|
|
req = list_entry(ep->queue.next, struct qe_req, queue);
|
|
|
|
cp = (u8 *)(req->req.buf) + req->req.actual;
|
|
if (cp) {
|
|
memcpy(cp, pframe->data, fsize);
|
|
req->req.actual += fsize;
|
|
if ((fsize < ep->ep.maxpacket) ||
|
|
(req->req.actual >= req->req.length)) {
|
|
if (ep->epnum == 0)
|
|
ep0_req_complete(ep->udc, req);
|
|
else
|
|
done(ep, req, 0);
|
|
if (list_empty(&ep->queue) && ep->epnum != 0)
|
|
qe_eprx_nack(ep);
|
|
}
|
|
}
|
|
}
|
|
|
|
qe_ep_toggledata01(ep);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void ep_rx_tasklet(unsigned long data)
|
|
{
|
|
struct qe_udc *udc = (struct qe_udc *)data;
|
|
struct qe_ep *ep;
|
|
struct qe_frame *pframe;
|
|
struct qe_bd __iomem *bd;
|
|
unsigned long flags;
|
|
u32 bdstatus, length;
|
|
u32 vaddr, i;
|
|
|
|
spin_lock_irqsave(&udc->lock, flags);
|
|
|
|
for (i = 1; i < USB_MAX_ENDPOINTS; i++) {
|
|
ep = &udc->eps[i];
|
|
|
|
if (ep->dir == USB_DIR_IN || ep->enable_tasklet == 0) {
|
|
dev_dbg(udc->dev,
|
|
"This is a transmit ep or disable tasklet!\n");
|
|
continue;
|
|
}
|
|
|
|
pframe = ep->rxframe;
|
|
bd = ep->n_rxbd;
|
|
bdstatus = in_be32((u32 __iomem *)bd);
|
|
length = bdstatus & BD_LENGTH_MASK;
|
|
|
|
while (!(bdstatus & R_E) && length) {
|
|
if (list_empty(&ep->queue)) {
|
|
qe_eprx_nack(ep);
|
|
dev_dbg(udc->dev,
|
|
"The rxep have noreq %d\n",
|
|
ep->has_data);
|
|
break;
|
|
}
|
|
|
|
if ((bdstatus & R_F) && (bdstatus & R_L)
|
|
&& !(bdstatus & R_ERROR)) {
|
|
qe_frame_clean(pframe);
|
|
vaddr = (u32)phys_to_virt(in_be32(&bd->buf));
|
|
frame_set_data(pframe, (u8 *)vaddr);
|
|
frame_set_length(pframe,
|
|
(length - USB_CRC_SIZE));
|
|
frame_set_status(pframe, FRAME_OK);
|
|
switch (bdstatus & R_PID) {
|
|
case R_PID_DATA1:
|
|
frame_set_info(pframe, PID_DATA1);
|
|
break;
|
|
case R_PID_SETUP:
|
|
frame_set_info(pframe, PID_SETUP);
|
|
break;
|
|
default:
|
|
frame_set_info(pframe, PID_DATA0);
|
|
break;
|
|
}
|
|
/* handle the rx frame */
|
|
qe_ep_rxframe_handle(ep);
|
|
} else {
|
|
dev_err(udc->dev,
|
|
"error in received frame\n");
|
|
}
|
|
/* note: don't clear the rxbd's buffer address */
|
|
/*clear the length */
|
|
out_be32((u32 __iomem *)bd, bdstatus & BD_STATUS_MASK);
|
|
ep->has_data--;
|
|
if (!(ep->localnack))
|
|
recycle_one_rxbd(ep);
|
|
|
|
/* Get next BD */
|
|
if (bdstatus & R_W)
|
|
bd = ep->rxbase;
|
|
else
|
|
bd++;
|
|
|
|
bdstatus = in_be32((u32 __iomem *)bd);
|
|
length = bdstatus & BD_LENGTH_MASK;
|
|
}
|
|
|
|
ep->n_rxbd = bd;
|
|
|
|
if (ep->localnack)
|
|
ep_recycle_rxbds(ep);
|
|
|
|
ep->enable_tasklet = 0;
|
|
} /* for i=1 */
|
|
|
|
spin_unlock_irqrestore(&udc->lock, flags);
|
|
}
|
|
|
|
static int qe_ep_rx(struct qe_ep *ep)
|
|
{
|
|
struct qe_udc *udc;
|
|
struct qe_frame *pframe;
|
|
struct qe_bd __iomem *bd;
|
|
u16 swoffs, ucoffs, emptybds;
|
|
|
|
udc = ep->udc;
|
|
pframe = ep->rxframe;
|
|
|
|
if (ep->dir == USB_DIR_IN) {
|
|
dev_err(udc->dev, "transmit ep in rx function\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
bd = ep->n_rxbd;
|
|
|
|
swoffs = (u16)(bd - ep->rxbase);
|
|
ucoffs = (u16)((in_be16(&udc->ep_param[ep->epnum]->rbptr) -
|
|
in_be16(&udc->ep_param[ep->epnum]->rbase)) >> 3);
|
|
if (swoffs < ucoffs)
|
|
emptybds = USB_BDRING_LEN_RX - ucoffs + swoffs;
|
|
else
|
|
emptybds = swoffs - ucoffs;
|
|
|
|
if (emptybds < MIN_EMPTY_BDS) {
|
|
qe_eprx_nack(ep);
|
|
ep->localnack = 1;
|
|
dev_vdbg(udc->dev, "%d empty bds, send NACK\n", emptybds);
|
|
}
|
|
ep->has_data = USB_BDRING_LEN_RX - emptybds;
|
|
|
|
if (list_empty(&ep->queue)) {
|
|
qe_eprx_nack(ep);
|
|
dev_vdbg(udc->dev, "The rxep have no req queued with %d BDs\n",
|
|
ep->has_data);
|
|
return 0;
|
|
}
|
|
|
|
tasklet_schedule(&udc->rx_tasklet);
|
|
ep->enable_tasklet = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* send data from a frame, no matter what tx_req */
|
|
static int qe_ep_tx(struct qe_ep *ep, struct qe_frame *frame)
|
|
{
|
|
struct qe_udc *udc = ep->udc;
|
|
struct qe_bd __iomem *bd;
|
|
u16 saveusbmr;
|
|
u32 bdstatus, pidmask;
|
|
u32 paddr;
|
|
|
|
if (ep->dir == USB_DIR_OUT) {
|
|
dev_err(udc->dev, "receive ep passed to tx function\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Disable the Tx interrupt */
|
|
saveusbmr = in_be16(&udc->usb_regs->usb_usbmr);
|
|
out_be16(&udc->usb_regs->usb_usbmr,
|
|
saveusbmr & ~(USB_E_TXB_MASK | USB_E_TXE_MASK));
|
|
|
|
bd = ep->n_txbd;
|
|
bdstatus = in_be32((u32 __iomem *)bd);
|
|
|
|
if (!(bdstatus & (T_R | BD_LENGTH_MASK))) {
|
|
if (frame_get_length(frame) == 0) {
|
|
frame_set_data(frame, udc->nullbuf);
|
|
frame_set_length(frame, 2);
|
|
frame->info |= (ZLP | NO_CRC);
|
|
dev_vdbg(udc->dev, "the frame size = 0\n");
|
|
}
|
|
paddr = virt_to_phys((void *)frame->data);
|
|
out_be32(&bd->buf, paddr);
|
|
bdstatus = (bdstatus&T_W);
|
|
if (!(frame_get_info(frame) & NO_CRC))
|
|
bdstatus |= T_R | T_I | T_L | T_TC
|
|
| frame_get_length(frame);
|
|
else
|
|
bdstatus |= T_R | T_I | T_L | frame_get_length(frame);
|
|
|
|
/* if the packet is a ZLP in status phase */
|
|
if ((ep->epnum == 0) && (udc->ep0_state == DATA_STATE_NEED_ZLP))
|
|
ep->data01 = 0x1;
|
|
|
|
if (ep->data01) {
|
|
pidmask = T_PID_DATA1;
|
|
frame->info |= PID_DATA1;
|
|
} else {
|
|
pidmask = T_PID_DATA0;
|
|
frame->info |= PID_DATA0;
|
|
}
|
|
bdstatus |= T_CNF;
|
|
bdstatus |= pidmask;
|
|
out_be32((u32 __iomem *)bd, bdstatus);
|
|
qe_ep_filltxfifo(ep);
|
|
|
|
/* enable the TX interrupt */
|
|
out_be16(&udc->usb_regs->usb_usbmr, saveusbmr);
|
|
|
|
qe_ep_toggledata01(ep);
|
|
if (bdstatus & T_W)
|
|
ep->n_txbd = ep->txbase;
|
|
else
|
|
ep->n_txbd++;
|
|
|
|
return 0;
|
|
} else {
|
|
out_be16(&udc->usb_regs->usb_usbmr, saveusbmr);
|
|
dev_vdbg(udc->dev, "The tx bd is not ready!\n");
|
|
return -EBUSY;
|
|
}
|
|
}
|
|
|
|
/* when a bd was transmitted, the function can
|
|
* handle the tx_req, not include ep0 */
|
|
static int txcomplete(struct qe_ep *ep, unsigned char restart)
|
|
{
|
|
if (ep->tx_req != NULL) {
|
|
struct qe_req *req = ep->tx_req;
|
|
unsigned zlp = 0, last_len = 0;
|
|
|
|
last_len = min_t(unsigned, req->req.length - ep->sent,
|
|
ep->ep.maxpacket);
|
|
|
|
if (!restart) {
|
|
int asent = ep->last;
|
|
ep->sent += asent;
|
|
ep->last -= asent;
|
|
} else {
|
|
ep->last = 0;
|
|
}
|
|
|
|
/* zlp needed when req->re.zero is set */
|
|
if (req->req.zero) {
|
|
if (last_len == 0 ||
|
|
(req->req.length % ep->ep.maxpacket) != 0)
|
|
zlp = 0;
|
|
else
|
|
zlp = 1;
|
|
} else
|
|
zlp = 0;
|
|
|
|
/* a request already were transmitted completely */
|
|
if (((ep->tx_req->req.length - ep->sent) <= 0) && !zlp) {
|
|
done(ep, ep->tx_req, 0);
|
|
ep->tx_req = NULL;
|
|
ep->last = 0;
|
|
ep->sent = 0;
|
|
}
|
|
}
|
|
|
|
/* we should gain a new tx_req fot this endpoint */
|
|
if (ep->tx_req == NULL) {
|
|
if (!list_empty(&ep->queue)) {
|
|
ep->tx_req = list_entry(ep->queue.next, struct qe_req,
|
|
queue);
|
|
ep->last = 0;
|
|
ep->sent = 0;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* give a frame and a tx_req, send some data */
|
|
static int qe_usb_senddata(struct qe_ep *ep, struct qe_frame *frame)
|
|
{
|
|
unsigned int size;
|
|
u8 *buf;
|
|
|
|
qe_frame_clean(frame);
|
|
size = min_t(u32, (ep->tx_req->req.length - ep->sent),
|
|
ep->ep.maxpacket);
|
|
buf = (u8 *)ep->tx_req->req.buf + ep->sent;
|
|
if (buf && size) {
|
|
ep->last = size;
|
|
ep->tx_req->req.actual += size;
|
|
frame_set_data(frame, buf);
|
|
frame_set_length(frame, size);
|
|
frame_set_status(frame, FRAME_OK);
|
|
frame_set_info(frame, 0);
|
|
return qe_ep_tx(ep, frame);
|
|
}
|
|
return -EIO;
|
|
}
|
|
|
|
/* give a frame struct,send a ZLP */
|
|
static int sendnulldata(struct qe_ep *ep, struct qe_frame *frame, uint infor)
|
|
{
|
|
struct qe_udc *udc = ep->udc;
|
|
|
|
if (frame == NULL)
|
|
return -ENODEV;
|
|
|
|
qe_frame_clean(frame);
|
|
frame_set_data(frame, (u8 *)udc->nullbuf);
|
|
frame_set_length(frame, 2);
|
|
frame_set_status(frame, FRAME_OK);
|
|
frame_set_info(frame, (ZLP | NO_CRC | infor));
|
|
|
|
return qe_ep_tx(ep, frame);
|
|
}
|
|
|
|
static int frame_create_tx(struct qe_ep *ep, struct qe_frame *frame)
|
|
{
|
|
struct qe_req *req = ep->tx_req;
|
|
int reval;
|
|
|
|
if (req == NULL)
|
|
return -ENODEV;
|
|
|
|
if ((req->req.length - ep->sent) > 0)
|
|
reval = qe_usb_senddata(ep, frame);
|
|
else
|
|
reval = sendnulldata(ep, frame, 0);
|
|
|
|
return reval;
|
|
}
|
|
|
|
/* if direction is DIR_IN, the status is Device->Host
|
|
* if direction is DIR_OUT, the status transaction is Device<-Host
|
|
* in status phase, udc create a request and gain status */
|
|
static int ep0_prime_status(struct qe_udc *udc, int direction)
|
|
{
|
|
|
|
struct qe_ep *ep = &udc->eps[0];
|
|
|
|
if (direction == USB_DIR_IN) {
|
|
udc->ep0_state = DATA_STATE_NEED_ZLP;
|
|
udc->ep0_dir = USB_DIR_IN;
|
|
sendnulldata(ep, ep->txframe, SETUP_STATUS | NO_REQ);
|
|
} else {
|
|
udc->ep0_dir = USB_DIR_OUT;
|
|
udc->ep0_state = WAIT_FOR_OUT_STATUS;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* a request complete in ep0, whether gadget request or udc request */
|
|
static void ep0_req_complete(struct qe_udc *udc, struct qe_req *req)
|
|
{
|
|
struct qe_ep *ep = &udc->eps[0];
|
|
/* because usb and ep's status already been set in ch9setaddress() */
|
|
|
|
switch (udc->ep0_state) {
|
|
case DATA_STATE_XMIT:
|
|
done(ep, req, 0);
|
|
/* receive status phase */
|
|
if (ep0_prime_status(udc, USB_DIR_OUT))
|
|
qe_ep0_stall(udc);
|
|
break;
|
|
|
|
case DATA_STATE_NEED_ZLP:
|
|
done(ep, req, 0);
|
|
udc->ep0_state = WAIT_FOR_SETUP;
|
|
break;
|
|
|
|
case DATA_STATE_RECV:
|
|
done(ep, req, 0);
|
|
/* send status phase */
|
|
if (ep0_prime_status(udc, USB_DIR_IN))
|
|
qe_ep0_stall(udc);
|
|
break;
|
|
|
|
case WAIT_FOR_OUT_STATUS:
|
|
done(ep, req, 0);
|
|
udc->ep0_state = WAIT_FOR_SETUP;
|
|
break;
|
|
|
|
case WAIT_FOR_SETUP:
|
|
dev_vdbg(udc->dev, "Unexpected interrupt\n");
|
|
break;
|
|
|
|
default:
|
|
qe_ep0_stall(udc);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int ep0_txcomplete(struct qe_ep *ep, unsigned char restart)
|
|
{
|
|
struct qe_req *tx_req = NULL;
|
|
struct qe_frame *frame = ep->txframe;
|
|
|
|
if ((frame_get_info(frame) & (ZLP | NO_REQ)) == (ZLP | NO_REQ)) {
|
|
if (!restart)
|
|
ep->udc->ep0_state = WAIT_FOR_SETUP;
|
|
else
|
|
sendnulldata(ep, ep->txframe, SETUP_STATUS | NO_REQ);
|
|
return 0;
|
|
}
|
|
|
|
tx_req = ep->tx_req;
|
|
if (tx_req != NULL) {
|
|
if (!restart) {
|
|
int asent = ep->last;
|
|
ep->sent += asent;
|
|
ep->last -= asent;
|
|
} else {
|
|
ep->last = 0;
|
|
}
|
|
|
|
/* a request already were transmitted completely */
|
|
if ((ep->tx_req->req.length - ep->sent) <= 0) {
|
|
ep->tx_req->req.actual = (unsigned int)ep->sent;
|
|
ep0_req_complete(ep->udc, ep->tx_req);
|
|
ep->tx_req = NULL;
|
|
ep->last = 0;
|
|
ep->sent = 0;
|
|
}
|
|
} else {
|
|
dev_vdbg(ep->udc->dev, "the ep0_controller have no req\n");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ep0_txframe_handle(struct qe_ep *ep)
|
|
{
|
|
/* if have error, transmit again */
|
|
if (frame_get_status(ep->txframe) & FRAME_ERROR) {
|
|
qe_ep_flushtxfifo(ep);
|
|
dev_vdbg(ep->udc->dev, "The EP0 transmit data have error!\n");
|
|
if (frame_get_info(ep->txframe) & PID_DATA0)
|
|
ep->data01 = 0;
|
|
else
|
|
ep->data01 = 1;
|
|
|
|
ep0_txcomplete(ep, 1);
|
|
} else
|
|
ep0_txcomplete(ep, 0);
|
|
|
|
frame_create_tx(ep, ep->txframe);
|
|
return 0;
|
|
}
|
|
|
|
static int qe_ep0_txconf(struct qe_ep *ep)
|
|
{
|
|
struct qe_bd __iomem *bd;
|
|
struct qe_frame *pframe;
|
|
u32 bdstatus;
|
|
|
|
bd = ep->c_txbd;
|
|
bdstatus = in_be32((u32 __iomem *)bd);
|
|
while (!(bdstatus & T_R) && (bdstatus & ~T_W)) {
|
|
pframe = ep->txframe;
|
|
|
|
/* clear and recycle the BD */
|
|
out_be32((u32 __iomem *)bd, bdstatus & T_W);
|
|
out_be32(&bd->buf, 0);
|
|
if (bdstatus & T_W)
|
|
ep->c_txbd = ep->txbase;
|
|
else
|
|
ep->c_txbd++;
|
|
|
|
if (ep->c_txbd == ep->n_txbd) {
|
|
if (bdstatus & DEVICE_T_ERROR) {
|
|
frame_set_status(pframe, FRAME_ERROR);
|
|
if (bdstatus & T_TO)
|
|
pframe->status |= TX_ER_TIMEOUT;
|
|
if (bdstatus & T_UN)
|
|
pframe->status |= TX_ER_UNDERUN;
|
|
}
|
|
ep0_txframe_handle(ep);
|
|
}
|
|
|
|
bd = ep->c_txbd;
|
|
bdstatus = in_be32((u32 __iomem *)bd);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ep_txframe_handle(struct qe_ep *ep)
|
|
{
|
|
if (frame_get_status(ep->txframe) & FRAME_ERROR) {
|
|
qe_ep_flushtxfifo(ep);
|
|
dev_vdbg(ep->udc->dev, "The EP0 transmit data have error!\n");
|
|
if (frame_get_info(ep->txframe) & PID_DATA0)
|
|
ep->data01 = 0;
|
|
else
|
|
ep->data01 = 1;
|
|
|
|
txcomplete(ep, 1);
|
|
} else
|
|
txcomplete(ep, 0);
|
|
|
|
frame_create_tx(ep, ep->txframe); /* send the data */
|
|
return 0;
|
|
}
|
|
|
|
/* confirm the already trainsmited bd */
|
|
static int qe_ep_txconf(struct qe_ep *ep)
|
|
{
|
|
struct qe_bd __iomem *bd;
|
|
struct qe_frame *pframe = NULL;
|
|
u32 bdstatus;
|
|
unsigned char breakonrxinterrupt = 0;
|
|
|
|
bd = ep->c_txbd;
|
|
bdstatus = in_be32((u32 __iomem *)bd);
|
|
while (!(bdstatus & T_R) && (bdstatus & ~T_W)) {
|
|
pframe = ep->txframe;
|
|
if (bdstatus & DEVICE_T_ERROR) {
|
|
frame_set_status(pframe, FRAME_ERROR);
|
|
if (bdstatus & T_TO)
|
|
pframe->status |= TX_ER_TIMEOUT;
|
|
if (bdstatus & T_UN)
|
|
pframe->status |= TX_ER_UNDERUN;
|
|
}
|
|
|
|
/* clear and recycle the BD */
|
|
out_be32((u32 __iomem *)bd, bdstatus & T_W);
|
|
out_be32(&bd->buf, 0);
|
|
if (bdstatus & T_W)
|
|
ep->c_txbd = ep->txbase;
|
|
else
|
|
ep->c_txbd++;
|
|
|
|
/* handle the tx frame */
|
|
ep_txframe_handle(ep);
|
|
bd = ep->c_txbd;
|
|
bdstatus = in_be32((u32 __iomem *)bd);
|
|
}
|
|
if (breakonrxinterrupt)
|
|
return -EIO;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/* Add a request in queue, and try to transmit a packet */
|
|
static int ep_req_send(struct qe_ep *ep, struct qe_req *req)
|
|
{
|
|
int reval = 0;
|
|
|
|
if (ep->tx_req == NULL) {
|
|
ep->sent = 0;
|
|
ep->last = 0;
|
|
txcomplete(ep, 0); /* can gain a new tx_req */
|
|
reval = frame_create_tx(ep, ep->txframe);
|
|
}
|
|
return reval;
|
|
}
|
|
|
|
/* Maybe this is a good ideal */
|
|
static int ep_req_rx(struct qe_ep *ep, struct qe_req *req)
|
|
{
|
|
struct qe_udc *udc = ep->udc;
|
|
struct qe_frame *pframe = NULL;
|
|
struct qe_bd __iomem *bd;
|
|
u32 bdstatus, length;
|
|
u32 vaddr, fsize;
|
|
u8 *cp;
|
|
u8 finish_req = 0;
|
|
u8 framepid;
|
|
|
|
if (list_empty(&ep->queue)) {
|
|
dev_vdbg(udc->dev, "the req already finish!\n");
|
|
return 0;
|
|
}
|
|
pframe = ep->rxframe;
|
|
|
|
bd = ep->n_rxbd;
|
|
bdstatus = in_be32((u32 __iomem *)bd);
|
|
length = bdstatus & BD_LENGTH_MASK;
|
|
|
|
while (!(bdstatus & R_E) && length) {
|
|
if (finish_req)
|
|
break;
|
|
if ((bdstatus & R_F) && (bdstatus & R_L)
|
|
&& !(bdstatus & R_ERROR)) {
|
|
qe_frame_clean(pframe);
|
|
vaddr = (u32)phys_to_virt(in_be32(&bd->buf));
|
|
frame_set_data(pframe, (u8 *)vaddr);
|
|
frame_set_length(pframe, (length - USB_CRC_SIZE));
|
|
frame_set_status(pframe, FRAME_OK);
|
|
switch (bdstatus & R_PID) {
|
|
case R_PID_DATA1:
|
|
frame_set_info(pframe, PID_DATA1); break;
|
|
default:
|
|
frame_set_info(pframe, PID_DATA0); break;
|
|
}
|
|
/* handle the rx frame */
|
|
|
|
if (frame_get_info(pframe) & PID_DATA1)
|
|
framepid = 0x1;
|
|
else
|
|
framepid = 0;
|
|
|
|
if (framepid != ep->data01) {
|
|
dev_vdbg(udc->dev, "the data01 error!\n");
|
|
} else {
|
|
fsize = frame_get_length(pframe);
|
|
|
|
cp = (u8 *)(req->req.buf) + req->req.actual;
|
|
if (cp) {
|
|
memcpy(cp, pframe->data, fsize);
|
|
req->req.actual += fsize;
|
|
if ((fsize < ep->ep.maxpacket)
|
|
|| (req->req.actual >=
|
|
req->req.length)) {
|
|
finish_req = 1;
|
|
done(ep, req, 0);
|
|
if (list_empty(&ep->queue))
|
|
qe_eprx_nack(ep);
|
|
}
|
|
}
|
|
qe_ep_toggledata01(ep);
|
|
}
|
|
} else {
|
|
dev_err(udc->dev, "The receive frame with error!\n");
|
|
}
|
|
|
|
/* note: don't clear the rxbd's buffer address *
|
|
* only Clear the length */
|
|
out_be32((u32 __iomem *)bd, (bdstatus & BD_STATUS_MASK));
|
|
ep->has_data--;
|
|
|
|
/* Get next BD */
|
|
if (bdstatus & R_W)
|
|
bd = ep->rxbase;
|
|
else
|
|
bd++;
|
|
|
|
bdstatus = in_be32((u32 __iomem *)bd);
|
|
length = bdstatus & BD_LENGTH_MASK;
|
|
}
|
|
|
|
ep->n_rxbd = bd;
|
|
ep_recycle_rxbds(ep);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* only add the request in queue */
|
|
static int ep_req_receive(struct qe_ep *ep, struct qe_req *req)
|
|
{
|
|
if (ep->state == EP_STATE_NACK) {
|
|
if (ep->has_data <= 0) {
|
|
/* Enable rx and unmask rx interrupt */
|
|
qe_eprx_normal(ep);
|
|
} else {
|
|
/* Copy the exist BD data */
|
|
ep_req_rx(ep, req);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/********************************************************************
|
|
Internal Used Function End
|
|
********************************************************************/
|
|
|
|
/*-----------------------------------------------------------------------
|
|
Endpoint Management Functions For Gadget
|
|
-----------------------------------------------------------------------*/
|
|
static int qe_ep_enable(struct usb_ep *_ep,
|
|
const struct usb_endpoint_descriptor *desc)
|
|
{
|
|
struct qe_udc *udc;
|
|
struct qe_ep *ep;
|
|
int retval = 0;
|
|
unsigned char epnum;
|
|
|
|
ep = container_of(_ep, struct qe_ep, ep);
|
|
|
|
/* catch various bogus parameters */
|
|
if (!_ep || !desc || _ep->name == ep_name[0] ||
|
|
(desc->bDescriptorType != USB_DT_ENDPOINT))
|
|
return -EINVAL;
|
|
|
|
udc = ep->udc;
|
|
if (!udc->driver || (udc->gadget.speed == USB_SPEED_UNKNOWN))
|
|
return -ESHUTDOWN;
|
|
|
|
epnum = (u8)desc->bEndpointAddress & 0xF;
|
|
|
|
retval = qe_ep_init(udc, epnum, desc);
|
|
if (retval != 0) {
|
|
cpm_muram_free(cpm_muram_offset(ep->rxbase));
|
|
dev_dbg(udc->dev, "enable ep%d failed\n", ep->epnum);
|
|
return -EINVAL;
|
|
}
|
|
dev_dbg(udc->dev, "enable ep%d successful\n", ep->epnum);
|
|
return 0;
|
|
}
|
|
|
|
static int qe_ep_disable(struct usb_ep *_ep)
|
|
{
|
|
struct qe_udc *udc;
|
|
struct qe_ep *ep;
|
|
unsigned long flags;
|
|
unsigned int size;
|
|
|
|
ep = container_of(_ep, struct qe_ep, ep);
|
|
udc = ep->udc;
|
|
|
|
if (!_ep || !ep->ep.desc) {
|
|
dev_dbg(udc->dev, "%s not enabled\n", _ep ? ep->ep.name : NULL);
|
|
return -EINVAL;
|
|
}
|
|
|
|
spin_lock_irqsave(&udc->lock, flags);
|
|
/* Nuke all pending requests (does flush) */
|
|
nuke(ep, -ESHUTDOWN);
|
|
ep->ep.desc = NULL;
|
|
ep->stopped = 1;
|
|
ep->tx_req = NULL;
|
|
qe_ep_reset(udc, ep->epnum);
|
|
spin_unlock_irqrestore(&udc->lock, flags);
|
|
|
|
cpm_muram_free(cpm_muram_offset(ep->rxbase));
|
|
|
|
if (ep->dir == USB_DIR_OUT)
|
|
size = (ep->ep.maxpacket + USB_CRC_SIZE + 2) *
|
|
(USB_BDRING_LEN_RX + 1);
|
|
else
|
|
size = (ep->ep.maxpacket + USB_CRC_SIZE + 2) *
|
|
(USB_BDRING_LEN + 1);
|
|
|
|
if (ep->dir != USB_DIR_IN) {
|
|
kfree(ep->rxframe);
|
|
if (ep->rxbufmap) {
|
|
dma_unmap_single(udc->gadget.dev.parent,
|
|
ep->rxbuf_d, size,
|
|
DMA_FROM_DEVICE);
|
|
ep->rxbuf_d = DMA_ADDR_INVALID;
|
|
} else {
|
|
dma_sync_single_for_cpu(
|
|
udc->gadget.dev.parent,
|
|
ep->rxbuf_d, size,
|
|
DMA_FROM_DEVICE);
|
|
}
|
|
kfree(ep->rxbuffer);
|
|
}
|
|
|
|
if (ep->dir != USB_DIR_OUT)
|
|
kfree(ep->txframe);
|
|
|
|
dev_dbg(udc->dev, "disabled %s OK\n", _ep->name);
|
|
return 0;
|
|
}
|
|
|
|
static struct usb_request *qe_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags)
|
|
{
|
|
struct qe_req *req;
|
|
|
|
req = kzalloc(sizeof(*req), gfp_flags);
|
|
if (!req)
|
|
return NULL;
|
|
|
|
req->req.dma = DMA_ADDR_INVALID;
|
|
|
|
INIT_LIST_HEAD(&req->queue);
|
|
|
|
return &req->req;
|
|
}
|
|
|
|
static void qe_free_request(struct usb_ep *_ep, struct usb_request *_req)
|
|
{
|
|
struct qe_req *req;
|
|
|
|
req = container_of(_req, struct qe_req, req);
|
|
|
|
if (_req)
|
|
kfree(req);
|
|
}
|
|
|
|
static int __qe_ep_queue(struct usb_ep *_ep, struct usb_request *_req)
|
|
{
|
|
struct qe_ep *ep = container_of(_ep, struct qe_ep, ep);
|
|
struct qe_req *req = container_of(_req, struct qe_req, req);
|
|
struct qe_udc *udc;
|
|
int reval;
|
|
|
|
udc = ep->udc;
|
|
/* catch various bogus parameters */
|
|
if (!_req || !req->req.complete || !req->req.buf
|
|
|| !list_empty(&req->queue)) {
|
|
dev_dbg(udc->dev, "bad params\n");
|
|
return -EINVAL;
|
|
}
|
|
if (!_ep || (!ep->ep.desc && ep_index(ep))) {
|
|
dev_dbg(udc->dev, "bad ep\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN)
|
|
return -ESHUTDOWN;
|
|
|
|
req->ep = ep;
|
|
|
|
/* map virtual address to hardware */
|
|
if (req->req.dma == DMA_ADDR_INVALID) {
|
|
req->req.dma = dma_map_single(ep->udc->gadget.dev.parent,
|
|
req->req.buf,
|
|
req->req.length,
|
|
ep_is_in(ep)
|
|
? DMA_TO_DEVICE :
|
|
DMA_FROM_DEVICE);
|
|
req->mapped = 1;
|
|
} else {
|
|
dma_sync_single_for_device(ep->udc->gadget.dev.parent,
|
|
req->req.dma, req->req.length,
|
|
ep_is_in(ep)
|
|
? DMA_TO_DEVICE :
|
|
DMA_FROM_DEVICE);
|
|
req->mapped = 0;
|
|
}
|
|
|
|
req->req.status = -EINPROGRESS;
|
|
req->req.actual = 0;
|
|
|
|
list_add_tail(&req->queue, &ep->queue);
|
|
dev_vdbg(udc->dev, "gadget have request in %s! %d\n",
|
|
ep->name, req->req.length);
|
|
|
|
/* push the request to device */
|
|
if (ep_is_in(ep))
|
|
reval = ep_req_send(ep, req);
|
|
|
|
/* EP0 */
|
|
if (ep_index(ep) == 0 && req->req.length > 0) {
|
|
if (ep_is_in(ep))
|
|
udc->ep0_state = DATA_STATE_XMIT;
|
|
else
|
|
udc->ep0_state = DATA_STATE_RECV;
|
|
}
|
|
|
|
if (ep->dir == USB_DIR_OUT)
|
|
reval = ep_req_receive(ep, req);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* queues (submits) an I/O request to an endpoint */
|
|
static int qe_ep_queue(struct usb_ep *_ep, struct usb_request *_req,
|
|
gfp_t gfp_flags)
|
|
{
|
|
struct qe_ep *ep = container_of(_ep, struct qe_ep, ep);
|
|
struct qe_udc *udc = ep->udc;
|
|
unsigned long flags;
|
|
int ret;
|
|
|
|
spin_lock_irqsave(&udc->lock, flags);
|
|
ret = __qe_ep_queue(_ep, _req);
|
|
spin_unlock_irqrestore(&udc->lock, flags);
|
|
return ret;
|
|
}
|
|
|
|
/* dequeues (cancels, unlinks) an I/O request from an endpoint */
|
|
static int qe_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
|
|
{
|
|
struct qe_ep *ep = container_of(_ep, struct qe_ep, ep);
|
|
struct qe_req *req;
|
|
unsigned long flags;
|
|
|
|
if (!_ep || !_req)
|
|
return -EINVAL;
|
|
|
|
spin_lock_irqsave(&ep->udc->lock, flags);
|
|
|
|
/* make sure it's actually queued on this endpoint */
|
|
list_for_each_entry(req, &ep->queue, queue) {
|
|
if (&req->req == _req)
|
|
break;
|
|
}
|
|
|
|
if (&req->req != _req) {
|
|
spin_unlock_irqrestore(&ep->udc->lock, flags);
|
|
return -EINVAL;
|
|
}
|
|
|
|
done(ep, req, -ECONNRESET);
|
|
|
|
spin_unlock_irqrestore(&ep->udc->lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------
|
|
* modify the endpoint halt feature
|
|
* @ep: the non-isochronous endpoint being stalled
|
|
* @value: 1--set halt 0--clear halt
|
|
* Returns zero, or a negative error code.
|
|
*----------------------------------------------------------------*/
|
|
static int qe_ep_set_halt(struct usb_ep *_ep, int value)
|
|
{
|
|
struct qe_ep *ep;
|
|
unsigned long flags;
|
|
int status = -EOPNOTSUPP;
|
|
struct qe_udc *udc;
|
|
|
|
ep = container_of(_ep, struct qe_ep, ep);
|
|
if (!_ep || !ep->ep.desc) {
|
|
status = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
udc = ep->udc;
|
|
/* Attempt to halt IN ep will fail if any transfer requests
|
|
* are still queue */
|
|
if (value && ep_is_in(ep) && !list_empty(&ep->queue)) {
|
|
status = -EAGAIN;
|
|
goto out;
|
|
}
|
|
|
|
status = 0;
|
|
spin_lock_irqsave(&ep->udc->lock, flags);
|
|
qe_eptx_stall_change(ep, value);
|
|
qe_eprx_stall_change(ep, value);
|
|
spin_unlock_irqrestore(&ep->udc->lock, flags);
|
|
|
|
if (ep->epnum == 0) {
|
|
udc->ep0_state = WAIT_FOR_SETUP;
|
|
udc->ep0_dir = 0;
|
|
}
|
|
|
|
/* set data toggle to DATA0 on clear halt */
|
|
if (value == 0)
|
|
ep->data01 = 0;
|
|
out:
|
|
dev_vdbg(udc->dev, "%s %s halt stat %d\n", ep->ep.name,
|
|
value ? "set" : "clear", status);
|
|
|
|
return status;
|
|
}
|
|
|
|
static struct usb_ep_ops qe_ep_ops = {
|
|
.enable = qe_ep_enable,
|
|
.disable = qe_ep_disable,
|
|
|
|
.alloc_request = qe_alloc_request,
|
|
.free_request = qe_free_request,
|
|
|
|
.queue = qe_ep_queue,
|
|
.dequeue = qe_ep_dequeue,
|
|
|
|
.set_halt = qe_ep_set_halt,
|
|
};
|
|
|
|
/*------------------------------------------------------------------------
|
|
Gadget Driver Layer Operations
|
|
------------------------------------------------------------------------*/
|
|
|
|
/* Get the current frame number */
|
|
static int qe_get_frame(struct usb_gadget *gadget)
|
|
{
|
|
struct qe_udc *udc = container_of(gadget, struct qe_udc, gadget);
|
|
u16 tmp;
|
|
|
|
tmp = in_be16(&udc->usb_param->frame_n);
|
|
if (tmp & 0x8000)
|
|
tmp = tmp & 0x07ff;
|
|
else
|
|
tmp = -EINVAL;
|
|
|
|
return (int)tmp;
|
|
}
|
|
|
|
static int fsl_qe_start(struct usb_gadget *gadget,
|
|
struct usb_gadget_driver *driver);
|
|
static int fsl_qe_stop(struct usb_gadget *gadget,
|
|
struct usb_gadget_driver *driver);
|
|
|
|
/* defined in usb_gadget.h */
|
|
static struct usb_gadget_ops qe_gadget_ops = {
|
|
.get_frame = qe_get_frame,
|
|
.udc_start = fsl_qe_start,
|
|
.udc_stop = fsl_qe_stop,
|
|
};
|
|
|
|
/*-------------------------------------------------------------------------
|
|
USB ep0 Setup process in BUS Enumeration
|
|
-------------------------------------------------------------------------*/
|
|
static int udc_reset_ep_queue(struct qe_udc *udc, u8 pipe)
|
|
{
|
|
struct qe_ep *ep = &udc->eps[pipe];
|
|
|
|
nuke(ep, -ECONNRESET);
|
|
ep->tx_req = NULL;
|
|
return 0;
|
|
}
|
|
|
|
static int reset_queues(struct qe_udc *udc)
|
|
{
|
|
u8 pipe;
|
|
|
|
for (pipe = 0; pipe < USB_MAX_ENDPOINTS; pipe++)
|
|
udc_reset_ep_queue(udc, pipe);
|
|
|
|
/* report disconnect; the driver is already quiesced */
|
|
spin_unlock(&udc->lock);
|
|
udc->driver->disconnect(&udc->gadget);
|
|
spin_lock(&udc->lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void ch9setaddress(struct qe_udc *udc, u16 value, u16 index,
|
|
u16 length)
|
|
{
|
|
/* Save the new address to device struct */
|
|
udc->device_address = (u8) value;
|
|
/* Update usb state */
|
|
udc->usb_state = USB_STATE_ADDRESS;
|
|
|
|
/* Status phase , send a ZLP */
|
|
if (ep0_prime_status(udc, USB_DIR_IN))
|
|
qe_ep0_stall(udc);
|
|
}
|
|
|
|
static void ownercomplete(struct usb_ep *_ep, struct usb_request *_req)
|
|
{
|
|
struct qe_req *req = container_of(_req, struct qe_req, req);
|
|
|
|
req->req.buf = NULL;
|
|
kfree(req);
|
|
}
|
|
|
|
static void ch9getstatus(struct qe_udc *udc, u8 request_type, u16 value,
|
|
u16 index, u16 length)
|
|
{
|
|
u16 usb_status = 0;
|
|
struct qe_req *req;
|
|
struct qe_ep *ep;
|
|
int status = 0;
|
|
|
|
ep = &udc->eps[0];
|
|
if ((request_type & USB_RECIP_MASK) == USB_RECIP_DEVICE) {
|
|
/* Get device status */
|
|
usb_status = 1 << USB_DEVICE_SELF_POWERED;
|
|
} else if ((request_type & USB_RECIP_MASK) == USB_RECIP_INTERFACE) {
|
|
/* Get interface status */
|
|
/* We don't have interface information in udc driver */
|
|
usb_status = 0;
|
|
} else if ((request_type & USB_RECIP_MASK) == USB_RECIP_ENDPOINT) {
|
|
/* Get endpoint status */
|
|
int pipe = index & USB_ENDPOINT_NUMBER_MASK;
|
|
struct qe_ep *target_ep = &udc->eps[pipe];
|
|
u16 usep;
|
|
|
|
/* stall if endpoint doesn't exist */
|
|
if (!target_ep->ep.desc)
|
|
goto stall;
|
|
|
|
usep = in_be16(&udc->usb_regs->usb_usep[pipe]);
|
|
if (index & USB_DIR_IN) {
|
|
if (target_ep->dir != USB_DIR_IN)
|
|
goto stall;
|
|
if ((usep & USB_THS_MASK) == USB_THS_STALL)
|
|
usb_status = 1 << USB_ENDPOINT_HALT;
|
|
} else {
|
|
if (target_ep->dir != USB_DIR_OUT)
|
|
goto stall;
|
|
if ((usep & USB_RHS_MASK) == USB_RHS_STALL)
|
|
usb_status = 1 << USB_ENDPOINT_HALT;
|
|
}
|
|
}
|
|
|
|
req = container_of(qe_alloc_request(&ep->ep, GFP_KERNEL),
|
|
struct qe_req, req);
|
|
req->req.length = 2;
|
|
req->req.buf = udc->statusbuf;
|
|
*(u16 *)req->req.buf = cpu_to_le16(usb_status);
|
|
req->req.status = -EINPROGRESS;
|
|
req->req.actual = 0;
|
|
req->req.complete = ownercomplete;
|
|
|
|
udc->ep0_dir = USB_DIR_IN;
|
|
|
|
/* data phase */
|
|
status = __qe_ep_queue(&ep->ep, &req->req);
|
|
|
|
if (status == 0)
|
|
return;
|
|
stall:
|
|
dev_err(udc->dev, "Can't respond to getstatus request \n");
|
|
qe_ep0_stall(udc);
|
|
}
|
|
|
|
/* only handle the setup request, suppose the device in normal status */
|
|
static void setup_received_handle(struct qe_udc *udc,
|
|
struct usb_ctrlrequest *setup)
|
|
{
|
|
/* Fix Endian (udc->local_setup_buff is cpu Endian now)*/
|
|
u16 wValue = le16_to_cpu(setup->wValue);
|
|
u16 wIndex = le16_to_cpu(setup->wIndex);
|
|
u16 wLength = le16_to_cpu(setup->wLength);
|
|
|
|
/* clear the previous request in the ep0 */
|
|
udc_reset_ep_queue(udc, 0);
|
|
|
|
if (setup->bRequestType & USB_DIR_IN)
|
|
udc->ep0_dir = USB_DIR_IN;
|
|
else
|
|
udc->ep0_dir = USB_DIR_OUT;
|
|
|
|
switch (setup->bRequest) {
|
|
case USB_REQ_GET_STATUS:
|
|
/* Data+Status phase form udc */
|
|
if ((setup->bRequestType & (USB_DIR_IN | USB_TYPE_MASK))
|
|
!= (USB_DIR_IN | USB_TYPE_STANDARD))
|
|
break;
|
|
ch9getstatus(udc, setup->bRequestType, wValue, wIndex,
|
|
wLength);
|
|
return;
|
|
|
|
case USB_REQ_SET_ADDRESS:
|
|
/* Status phase from udc */
|
|
if (setup->bRequestType != (USB_DIR_OUT | USB_TYPE_STANDARD |
|
|
USB_RECIP_DEVICE))
|
|
break;
|
|
ch9setaddress(udc, wValue, wIndex, wLength);
|
|
return;
|
|
|
|
case USB_REQ_CLEAR_FEATURE:
|
|
case USB_REQ_SET_FEATURE:
|
|
/* Requests with no data phase, status phase from udc */
|
|
if ((setup->bRequestType & USB_TYPE_MASK)
|
|
!= USB_TYPE_STANDARD)
|
|
break;
|
|
|
|
if ((setup->bRequestType & USB_RECIP_MASK)
|
|
== USB_RECIP_ENDPOINT) {
|
|
int pipe = wIndex & USB_ENDPOINT_NUMBER_MASK;
|
|
struct qe_ep *ep;
|
|
|
|
if (wValue != 0 || wLength != 0
|
|
|| pipe > USB_MAX_ENDPOINTS)
|
|
break;
|
|
ep = &udc->eps[pipe];
|
|
|
|
spin_unlock(&udc->lock);
|
|
qe_ep_set_halt(&ep->ep,
|
|
(setup->bRequest == USB_REQ_SET_FEATURE)
|
|
? 1 : 0);
|
|
spin_lock(&udc->lock);
|
|
}
|
|
|
|
ep0_prime_status(udc, USB_DIR_IN);
|
|
|
|
return;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (wLength) {
|
|
/* Data phase from gadget, status phase from udc */
|
|
if (setup->bRequestType & USB_DIR_IN) {
|
|
udc->ep0_state = DATA_STATE_XMIT;
|
|
udc->ep0_dir = USB_DIR_IN;
|
|
} else {
|
|
udc->ep0_state = DATA_STATE_RECV;
|
|
udc->ep0_dir = USB_DIR_OUT;
|
|
}
|
|
spin_unlock(&udc->lock);
|
|
if (udc->driver->setup(&udc->gadget,
|
|
&udc->local_setup_buff) < 0)
|
|
qe_ep0_stall(udc);
|
|
spin_lock(&udc->lock);
|
|
} else {
|
|
/* No data phase, IN status from gadget */
|
|
udc->ep0_dir = USB_DIR_IN;
|
|
spin_unlock(&udc->lock);
|
|
if (udc->driver->setup(&udc->gadget,
|
|
&udc->local_setup_buff) < 0)
|
|
qe_ep0_stall(udc);
|
|
spin_lock(&udc->lock);
|
|
udc->ep0_state = DATA_STATE_NEED_ZLP;
|
|
}
|
|
}
|
|
|
|
/*-------------------------------------------------------------------------
|
|
USB Interrupt handlers
|
|
-------------------------------------------------------------------------*/
|
|
static void suspend_irq(struct qe_udc *udc)
|
|
{
|
|
udc->resume_state = udc->usb_state;
|
|
udc->usb_state = USB_STATE_SUSPENDED;
|
|
|
|
/* report suspend to the driver ,serial.c not support this*/
|
|
if (udc->driver->suspend)
|
|
udc->driver->suspend(&udc->gadget);
|
|
}
|
|
|
|
static void resume_irq(struct qe_udc *udc)
|
|
{
|
|
udc->usb_state = udc->resume_state;
|
|
udc->resume_state = 0;
|
|
|
|
/* report resume to the driver , serial.c not support this*/
|
|
if (udc->driver->resume)
|
|
udc->driver->resume(&udc->gadget);
|
|
}
|
|
|
|
static void idle_irq(struct qe_udc *udc)
|
|
{
|
|
u8 usbs;
|
|
|
|
usbs = in_8(&udc->usb_regs->usb_usbs);
|
|
if (usbs & USB_IDLE_STATUS_MASK) {
|
|
if ((udc->usb_state) != USB_STATE_SUSPENDED)
|
|
suspend_irq(udc);
|
|
} else {
|
|
if (udc->usb_state == USB_STATE_SUSPENDED)
|
|
resume_irq(udc);
|
|
}
|
|
}
|
|
|
|
static int reset_irq(struct qe_udc *udc)
|
|
{
|
|
unsigned char i;
|
|
|
|
if (udc->usb_state == USB_STATE_DEFAULT)
|
|
return 0;
|
|
|
|
qe_usb_disable(udc);
|
|
out_8(&udc->usb_regs->usb_usadr, 0);
|
|
|
|
for (i = 0; i < USB_MAX_ENDPOINTS; i++) {
|
|
if (udc->eps[i].init)
|
|
qe_ep_reset(udc, i);
|
|
}
|
|
|
|
reset_queues(udc);
|
|
udc->usb_state = USB_STATE_DEFAULT;
|
|
udc->ep0_state = WAIT_FOR_SETUP;
|
|
udc->ep0_dir = USB_DIR_OUT;
|
|
qe_usb_enable(udc);
|
|
return 0;
|
|
}
|
|
|
|
static int bsy_irq(struct qe_udc *udc)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int txe_irq(struct qe_udc *udc)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/* ep0 tx interrupt also in here */
|
|
static int tx_irq(struct qe_udc *udc)
|
|
{
|
|
struct qe_ep *ep;
|
|
struct qe_bd __iomem *bd;
|
|
int i, res = 0;
|
|
|
|
if ((udc->usb_state == USB_STATE_ADDRESS)
|
|
&& (in_8(&udc->usb_regs->usb_usadr) == 0))
|
|
out_8(&udc->usb_regs->usb_usadr, udc->device_address);
|
|
|
|
for (i = (USB_MAX_ENDPOINTS-1); ((i >= 0) && (res == 0)); i--) {
|
|
ep = &udc->eps[i];
|
|
if (ep && ep->init && (ep->dir != USB_DIR_OUT)) {
|
|
bd = ep->c_txbd;
|
|
if (!(in_be32((u32 __iomem *)bd) & T_R)
|
|
&& (in_be32(&bd->buf))) {
|
|
/* confirm the transmitted bd */
|
|
if (ep->epnum == 0)
|
|
res = qe_ep0_txconf(ep);
|
|
else
|
|
res = qe_ep_txconf(ep);
|
|
}
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
|
|
/* setup packect's rx is handle in the function too */
|
|
static void rx_irq(struct qe_udc *udc)
|
|
{
|
|
struct qe_ep *ep;
|
|
struct qe_bd __iomem *bd;
|
|
int i;
|
|
|
|
for (i = 0; i < USB_MAX_ENDPOINTS; i++) {
|
|
ep = &udc->eps[i];
|
|
if (ep && ep->init && (ep->dir != USB_DIR_IN)) {
|
|
bd = ep->n_rxbd;
|
|
if (!(in_be32((u32 __iomem *)bd) & R_E)
|
|
&& (in_be32(&bd->buf))) {
|
|
if (ep->epnum == 0) {
|
|
qe_ep0_rx(udc);
|
|
} else {
|
|
/*non-setup package receive*/
|
|
qe_ep_rx(ep);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static irqreturn_t qe_udc_irq(int irq, void *_udc)
|
|
{
|
|
struct qe_udc *udc = (struct qe_udc *)_udc;
|
|
u16 irq_src;
|
|
irqreturn_t status = IRQ_NONE;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&udc->lock, flags);
|
|
|
|
irq_src = in_be16(&udc->usb_regs->usb_usber) &
|
|
in_be16(&udc->usb_regs->usb_usbmr);
|
|
/* Clear notification bits */
|
|
out_be16(&udc->usb_regs->usb_usber, irq_src);
|
|
/* USB Interrupt */
|
|
if (irq_src & USB_E_IDLE_MASK) {
|
|
idle_irq(udc);
|
|
irq_src &= ~USB_E_IDLE_MASK;
|
|
status = IRQ_HANDLED;
|
|
}
|
|
|
|
if (irq_src & USB_E_TXB_MASK) {
|
|
tx_irq(udc);
|
|
irq_src &= ~USB_E_TXB_MASK;
|
|
status = IRQ_HANDLED;
|
|
}
|
|
|
|
if (irq_src & USB_E_RXB_MASK) {
|
|
rx_irq(udc);
|
|
irq_src &= ~USB_E_RXB_MASK;
|
|
status = IRQ_HANDLED;
|
|
}
|
|
|
|
if (irq_src & USB_E_RESET_MASK) {
|
|
reset_irq(udc);
|
|
irq_src &= ~USB_E_RESET_MASK;
|
|
status = IRQ_HANDLED;
|
|
}
|
|
|
|
if (irq_src & USB_E_BSY_MASK) {
|
|
bsy_irq(udc);
|
|
irq_src &= ~USB_E_BSY_MASK;
|
|
status = IRQ_HANDLED;
|
|
}
|
|
|
|
if (irq_src & USB_E_TXE_MASK) {
|
|
txe_irq(udc);
|
|
irq_src &= ~USB_E_TXE_MASK;
|
|
status = IRQ_HANDLED;
|
|
}
|
|
|
|
spin_unlock_irqrestore(&udc->lock, flags);
|
|
|
|
return status;
|
|
}
|
|
|
|
/*-------------------------------------------------------------------------
|
|
Gadget driver probe and unregister.
|
|
--------------------------------------------------------------------------*/
|
|
static int fsl_qe_start(struct usb_gadget *gadget,
|
|
struct usb_gadget_driver *driver)
|
|
{
|
|
struct qe_udc *udc;
|
|
unsigned long flags;
|
|
|
|
udc = container_of(gadget, struct qe_udc, gadget);
|
|
/* lock is needed but whether should use this lock or another */
|
|
spin_lock_irqsave(&udc->lock, flags);
|
|
|
|
driver->driver.bus = NULL;
|
|
/* hook up the driver */
|
|
udc->driver = driver;
|
|
udc->gadget.dev.driver = &driver->driver;
|
|
udc->gadget.speed = driver->max_speed;
|
|
|
|
/* Enable IRQ reg and Set usbcmd reg EN bit */
|
|
qe_usb_enable(udc);
|
|
|
|
out_be16(&udc->usb_regs->usb_usber, 0xffff);
|
|
out_be16(&udc->usb_regs->usb_usbmr, USB_E_DEFAULT_DEVICE);
|
|
udc->usb_state = USB_STATE_ATTACHED;
|
|
udc->ep0_state = WAIT_FOR_SETUP;
|
|
udc->ep0_dir = USB_DIR_OUT;
|
|
spin_unlock_irqrestore(&udc->lock, flags);
|
|
|
|
dev_info(udc->dev, "%s bind to driver %s\n", udc->gadget.name,
|
|
driver->driver.name);
|
|
return 0;
|
|
}
|
|
|
|
static int fsl_qe_stop(struct usb_gadget *gadget,
|
|
struct usb_gadget_driver *driver)
|
|
{
|
|
struct qe_udc *udc;
|
|
struct qe_ep *loop_ep;
|
|
unsigned long flags;
|
|
|
|
udc = container_of(gadget, struct qe_udc, gadget);
|
|
/* stop usb controller, disable intr */
|
|
qe_usb_disable(udc);
|
|
|
|
/* in fact, no needed */
|
|
udc->usb_state = USB_STATE_ATTACHED;
|
|
udc->ep0_state = WAIT_FOR_SETUP;
|
|
udc->ep0_dir = 0;
|
|
|
|
/* stand operation */
|
|
spin_lock_irqsave(&udc->lock, flags);
|
|
udc->gadget.speed = USB_SPEED_UNKNOWN;
|
|
nuke(&udc->eps[0], -ESHUTDOWN);
|
|
list_for_each_entry(loop_ep, &udc->gadget.ep_list, ep.ep_list)
|
|
nuke(loop_ep, -ESHUTDOWN);
|
|
spin_unlock_irqrestore(&udc->lock, flags);
|
|
|
|
udc->gadget.dev.driver = NULL;
|
|
udc->driver = NULL;
|
|
|
|
dev_info(udc->dev, "unregistered gadget driver '%s'\r\n",
|
|
driver->driver.name);
|
|
return 0;
|
|
}
|
|
|
|
/* udc structure's alloc and setup, include ep-param alloc */
|
|
static struct qe_udc *qe_udc_config(struct platform_device *ofdev)
|
|
{
|
|
struct qe_udc *udc;
|
|
struct device_node *np = ofdev->dev.of_node;
|
|
unsigned int tmp_addr = 0;
|
|
struct usb_device_para __iomem *usbpram;
|
|
unsigned int i;
|
|
u64 size;
|
|
u32 offset;
|
|
|
|
udc = kzalloc(sizeof(*udc), GFP_KERNEL);
|
|
if (udc == NULL) {
|
|
dev_err(&ofdev->dev, "malloc udc failed\n");
|
|
goto cleanup;
|
|
}
|
|
|
|
udc->dev = &ofdev->dev;
|
|
|
|
/* get default address of usb parameter in MURAM from device tree */
|
|
offset = *of_get_address(np, 1, &size, NULL);
|
|
udc->usb_param = cpm_muram_addr(offset);
|
|
memset_io(udc->usb_param, 0, size);
|
|
|
|
usbpram = udc->usb_param;
|
|
out_be16(&usbpram->frame_n, 0);
|
|
out_be32(&usbpram->rstate, 0);
|
|
|
|
tmp_addr = cpm_muram_alloc((USB_MAX_ENDPOINTS *
|
|
sizeof(struct usb_ep_para)),
|
|
USB_EP_PARA_ALIGNMENT);
|
|
if (IS_ERR_VALUE(tmp_addr))
|
|
goto cleanup;
|
|
|
|
for (i = 0; i < USB_MAX_ENDPOINTS; i++) {
|
|
out_be16(&usbpram->epptr[i], (u16)tmp_addr);
|
|
udc->ep_param[i] = cpm_muram_addr(tmp_addr);
|
|
tmp_addr += 32;
|
|
}
|
|
|
|
memset_io(udc->ep_param[0], 0,
|
|
USB_MAX_ENDPOINTS * sizeof(struct usb_ep_para));
|
|
|
|
udc->resume_state = USB_STATE_NOTATTACHED;
|
|
udc->usb_state = USB_STATE_POWERED;
|
|
udc->ep0_dir = 0;
|
|
|
|
spin_lock_init(&udc->lock);
|
|
return udc;
|
|
|
|
cleanup:
|
|
kfree(udc);
|
|
return NULL;
|
|
}
|
|
|
|
/* USB Controller register init */
|
|
static int qe_udc_reg_init(struct qe_udc *udc)
|
|
{
|
|
struct usb_ctlr __iomem *qe_usbregs;
|
|
qe_usbregs = udc->usb_regs;
|
|
|
|
/* Spec says that we must enable the USB controller to change mode. */
|
|
out_8(&qe_usbregs->usb_usmod, 0x01);
|
|
/* Mode changed, now disable it, since muram isn't initialized yet. */
|
|
out_8(&qe_usbregs->usb_usmod, 0x00);
|
|
|
|
/* Initialize the rest. */
|
|
out_be16(&qe_usbregs->usb_usbmr, 0);
|
|
out_8(&qe_usbregs->usb_uscom, 0);
|
|
out_be16(&qe_usbregs->usb_usber, USBER_ALL_CLEAR);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qe_ep_config(struct qe_udc *udc, unsigned char pipe_num)
|
|
{
|
|
struct qe_ep *ep = &udc->eps[pipe_num];
|
|
|
|
ep->udc = udc;
|
|
strcpy(ep->name, ep_name[pipe_num]);
|
|
ep->ep.name = ep_name[pipe_num];
|
|
|
|
ep->ep.ops = &qe_ep_ops;
|
|
ep->stopped = 1;
|
|
ep->ep.maxpacket = (unsigned short) ~0;
|
|
ep->ep.desc = NULL;
|
|
ep->dir = 0xff;
|
|
ep->epnum = (u8)pipe_num;
|
|
ep->sent = 0;
|
|
ep->last = 0;
|
|
ep->init = 0;
|
|
ep->rxframe = NULL;
|
|
ep->txframe = NULL;
|
|
ep->tx_req = NULL;
|
|
ep->state = EP_STATE_IDLE;
|
|
ep->has_data = 0;
|
|
|
|
/* the queue lists any req for this ep */
|
|
INIT_LIST_HEAD(&ep->queue);
|
|
|
|
/* gagdet.ep_list used for ep_autoconfig so no ep0*/
|
|
if (pipe_num != 0)
|
|
list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list);
|
|
|
|
ep->gadget = &udc->gadget;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* UDC device Driver operation functions *
|
|
*----------------------------------------------------------------------*/
|
|
static void qe_udc_release(struct device *dev)
|
|
{
|
|
struct qe_udc *udc = container_of(dev, struct qe_udc, gadget.dev);
|
|
int i;
|
|
|
|
complete(udc->done);
|
|
cpm_muram_free(cpm_muram_offset(udc->ep_param[0]));
|
|
for (i = 0; i < USB_MAX_ENDPOINTS; i++)
|
|
udc->ep_param[i] = NULL;
|
|
|
|
kfree(udc);
|
|
}
|
|
|
|
/* Driver probe functions */
|
|
static const struct of_device_id qe_udc_match[];
|
|
static int qe_udc_probe(struct platform_device *ofdev)
|
|
{
|
|
struct qe_udc *udc;
|
|
const struct of_device_id *match;
|
|
struct device_node *np = ofdev->dev.of_node;
|
|
struct qe_ep *ep;
|
|
unsigned int ret = 0;
|
|
unsigned int i;
|
|
const void *prop;
|
|
|
|
match = of_match_device(qe_udc_match, &ofdev->dev);
|
|
if (!match)
|
|
return -EINVAL;
|
|
|
|
prop = of_get_property(np, "mode", NULL);
|
|
if (!prop || strcmp(prop, "peripheral"))
|
|
return -ENODEV;
|
|
|
|
/* Initialize the udc structure including QH member and other member */
|
|
udc = qe_udc_config(ofdev);
|
|
if (!udc) {
|
|
dev_err(&ofdev->dev, "failed to initialize\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
udc->soc_type = (unsigned long)match->data;
|
|
udc->usb_regs = of_iomap(np, 0);
|
|
if (!udc->usb_regs) {
|
|
ret = -ENOMEM;
|
|
goto err1;
|
|
}
|
|
|
|
/* initialize usb hw reg except for regs for EP,
|
|
* leave usbintr reg untouched*/
|
|
qe_udc_reg_init(udc);
|
|
|
|
/* here comes the stand operations for probe
|
|
* set the qe_udc->gadget.xxx */
|
|
udc->gadget.ops = &qe_gadget_ops;
|
|
|
|
/* gadget.ep0 is a pointer */
|
|
udc->gadget.ep0 = &udc->eps[0].ep;
|
|
|
|
INIT_LIST_HEAD(&udc->gadget.ep_list);
|
|
|
|
/* modify in register gadget process */
|
|
udc->gadget.speed = USB_SPEED_UNKNOWN;
|
|
|
|
/* name: Identifies the controller hardware type. */
|
|
udc->gadget.name = driver_name;
|
|
|
|
device_initialize(&udc->gadget.dev);
|
|
|
|
dev_set_name(&udc->gadget.dev, "gadget");
|
|
|
|
udc->gadget.dev.release = qe_udc_release;
|
|
udc->gadget.dev.parent = &ofdev->dev;
|
|
|
|
/* initialize qe_ep struct */
|
|
for (i = 0; i < USB_MAX_ENDPOINTS ; i++) {
|
|
/* because the ep type isn't decide here so
|
|
* qe_ep_init() should be called in ep_enable() */
|
|
|
|
/* setup the qe_ep struct and link ep.ep.list
|
|
* into gadget.ep_list */
|
|
qe_ep_config(udc, (unsigned char)i);
|
|
}
|
|
|
|
/* ep0 initialization in here */
|
|
ret = qe_ep_init(udc, 0, &qe_ep0_desc);
|
|
if (ret)
|
|
goto err2;
|
|
|
|
/* create a buf for ZLP send, need to remain zeroed */
|
|
udc->nullbuf = kzalloc(256, GFP_KERNEL);
|
|
if (udc->nullbuf == NULL) {
|
|
dev_err(udc->dev, "cannot alloc nullbuf\n");
|
|
ret = -ENOMEM;
|
|
goto err3;
|
|
}
|
|
|
|
/* buffer for data of get_status request */
|
|
udc->statusbuf = kzalloc(2, GFP_KERNEL);
|
|
if (udc->statusbuf == NULL) {
|
|
ret = -ENOMEM;
|
|
goto err4;
|
|
}
|
|
|
|
udc->nullp = virt_to_phys((void *)udc->nullbuf);
|
|
if (udc->nullp == DMA_ADDR_INVALID) {
|
|
udc->nullp = dma_map_single(
|
|
udc->gadget.dev.parent,
|
|
udc->nullbuf,
|
|
256,
|
|
DMA_TO_DEVICE);
|
|
udc->nullmap = 1;
|
|
} else {
|
|
dma_sync_single_for_device(udc->gadget.dev.parent,
|
|
udc->nullp, 256,
|
|
DMA_TO_DEVICE);
|
|
}
|
|
|
|
tasklet_init(&udc->rx_tasklet, ep_rx_tasklet,
|
|
(unsigned long)udc);
|
|
/* request irq and disable DR */
|
|
udc->usb_irq = irq_of_parse_and_map(np, 0);
|
|
if (!udc->usb_irq) {
|
|
ret = -EINVAL;
|
|
goto err_noirq;
|
|
}
|
|
|
|
ret = request_irq(udc->usb_irq, qe_udc_irq, 0,
|
|
driver_name, udc);
|
|
if (ret) {
|
|
dev_err(udc->dev, "cannot request irq %d err %d\n",
|
|
udc->usb_irq, ret);
|
|
goto err5;
|
|
}
|
|
|
|
ret = device_add(&udc->gadget.dev);
|
|
if (ret)
|
|
goto err6;
|
|
|
|
ret = usb_add_gadget_udc(&ofdev->dev, &udc->gadget);
|
|
if (ret)
|
|
goto err7;
|
|
|
|
dev_set_drvdata(&ofdev->dev, udc);
|
|
dev_info(udc->dev,
|
|
"%s USB controller initialized as device\n",
|
|
(udc->soc_type == PORT_QE) ? "QE" : "CPM");
|
|
return 0;
|
|
|
|
err7:
|
|
device_unregister(&udc->gadget.dev);
|
|
err6:
|
|
free_irq(udc->usb_irq, udc);
|
|
err5:
|
|
irq_dispose_mapping(udc->usb_irq);
|
|
err_noirq:
|
|
if (udc->nullmap) {
|
|
dma_unmap_single(udc->gadget.dev.parent,
|
|
udc->nullp, 256,
|
|
DMA_TO_DEVICE);
|
|
udc->nullp = DMA_ADDR_INVALID;
|
|
} else {
|
|
dma_sync_single_for_cpu(udc->gadget.dev.parent,
|
|
udc->nullp, 256,
|
|
DMA_TO_DEVICE);
|
|
}
|
|
kfree(udc->statusbuf);
|
|
err4:
|
|
kfree(udc->nullbuf);
|
|
err3:
|
|
ep = &udc->eps[0];
|
|
cpm_muram_free(cpm_muram_offset(ep->rxbase));
|
|
kfree(ep->rxframe);
|
|
kfree(ep->rxbuffer);
|
|
kfree(ep->txframe);
|
|
err2:
|
|
iounmap(udc->usb_regs);
|
|
err1:
|
|
kfree(udc);
|
|
return ret;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int qe_udc_suspend(struct platform_device *dev, pm_message_t state)
|
|
{
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
static int qe_udc_resume(struct platform_device *dev)
|
|
{
|
|
return -ENOTSUPP;
|
|
}
|
|
#endif
|
|
|
|
static int qe_udc_remove(struct platform_device *ofdev)
|
|
{
|
|
struct qe_udc *udc = dev_get_drvdata(&ofdev->dev);
|
|
struct qe_ep *ep;
|
|
unsigned int size;
|
|
DECLARE_COMPLETION(done);
|
|
|
|
usb_del_gadget_udc(&udc->gadget);
|
|
|
|
udc->done = &done;
|
|
tasklet_disable(&udc->rx_tasklet);
|
|
|
|
if (udc->nullmap) {
|
|
dma_unmap_single(udc->gadget.dev.parent,
|
|
udc->nullp, 256,
|
|
DMA_TO_DEVICE);
|
|
udc->nullp = DMA_ADDR_INVALID;
|
|
} else {
|
|
dma_sync_single_for_cpu(udc->gadget.dev.parent,
|
|
udc->nullp, 256,
|
|
DMA_TO_DEVICE);
|
|
}
|
|
kfree(udc->statusbuf);
|
|
kfree(udc->nullbuf);
|
|
|
|
ep = &udc->eps[0];
|
|
cpm_muram_free(cpm_muram_offset(ep->rxbase));
|
|
size = (ep->ep.maxpacket + USB_CRC_SIZE + 2) * (USB_BDRING_LEN + 1);
|
|
|
|
kfree(ep->rxframe);
|
|
if (ep->rxbufmap) {
|
|
dma_unmap_single(udc->gadget.dev.parent,
|
|
ep->rxbuf_d, size,
|
|
DMA_FROM_DEVICE);
|
|
ep->rxbuf_d = DMA_ADDR_INVALID;
|
|
} else {
|
|
dma_sync_single_for_cpu(udc->gadget.dev.parent,
|
|
ep->rxbuf_d, size,
|
|
DMA_FROM_DEVICE);
|
|
}
|
|
|
|
kfree(ep->rxbuffer);
|
|
kfree(ep->txframe);
|
|
|
|
free_irq(udc->usb_irq, udc);
|
|
irq_dispose_mapping(udc->usb_irq);
|
|
|
|
tasklet_kill(&udc->rx_tasklet);
|
|
|
|
iounmap(udc->usb_regs);
|
|
|
|
device_unregister(&udc->gadget.dev);
|
|
/* wait for release() of gadget.dev to free udc */
|
|
wait_for_completion(&done);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
static const struct of_device_id qe_udc_match[] = {
|
|
{
|
|
.compatible = "fsl,mpc8323-qe-usb",
|
|
.data = (void *)PORT_QE,
|
|
},
|
|
{
|
|
.compatible = "fsl,mpc8360-qe-usb",
|
|
.data = (void *)PORT_QE,
|
|
},
|
|
{
|
|
.compatible = "fsl,mpc8272-cpm-usb",
|
|
.data = (void *)PORT_CPM,
|
|
},
|
|
{},
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, qe_udc_match);
|
|
|
|
static struct platform_driver udc_driver = {
|
|
.driver = {
|
|
.name = (char *)driver_name,
|
|
.owner = THIS_MODULE,
|
|
.of_match_table = qe_udc_match,
|
|
},
|
|
.probe = qe_udc_probe,
|
|
.remove = qe_udc_remove,
|
|
#ifdef CONFIG_PM
|
|
.suspend = qe_udc_suspend,
|
|
.resume = qe_udc_resume,
|
|
#endif
|
|
};
|
|
|
|
module_platform_driver(udc_driver);
|
|
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_AUTHOR(DRIVER_AUTHOR);
|
|
MODULE_LICENSE("GPL");
|
|
|