--- /dev/null
+/*
+ * Copyright (C) 2004-2007 Freescale Semicondutor, Inc. All rights reserved.
+ *
+ * Author: Li Yang <leoli@freescale.com>
+ * Jiang Bo <tanya.jiang@freescale.com>
+ *
+ * Description:
+ * Freescale high-speed USB SOC DR module device controller driver.
+ * This can be found on MPC8349E/MPC8313E cpus.
+ * The driver is previously named as mpc_udc. Based on bare board
+ * code from Dave Liu and Shlomi Gridish.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#undef VERBOSE
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/ioport.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/timer.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/proc_fs.h>
+#include <linux/mm.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb_gadget.h>
+#include <linux/usb/otg.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/fsl_devices.h>
+#include <linux/dmapool.h>
+
+#include <asm/byteorder.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+#include <asm/unaligned.h>
+#include <asm/dma.h>
+#include <asm/cacheflush.h>
+
+#include "fsl_usb2_udc.h"
+
+#define DRIVER_DESC "Freescale High-Speed USB SOC Device Controller driver"
+#define DRIVER_AUTHOR "Li Yang/Jiang Bo"
+#define DRIVER_VERSION "Apr 20, 2007"
+
+#define DMA_ADDR_INVALID (~(dma_addr_t)0)
+
+static const char driver_name[] = "fsl-usb2-udc";
+static const char driver_desc[] = DRIVER_DESC;
+
+volatile static struct usb_dr_device *dr_regs = NULL;
+volatile static struct usb_sys_interface *usb_sys_regs = NULL;
+
+/* it is initialized in probe() */
+static struct fsl_udc *udc_controller = NULL;
+
+static const struct usb_endpoint_descriptor
+fsl_ep0_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = 0,
+ .bmAttributes = USB_ENDPOINT_XFER_CONTROL,
+ .wMaxPacketSize = USB_MAX_CTRL_PAYLOAD,
+};
+
+static int fsl_udc_suspend(struct platform_device *pdev, pm_message_t state);
+static int fsl_udc_resume(struct platform_device *pdev);
+static void fsl_ep_fifo_flush(struct usb_ep *_ep);
+
+#ifdef CONFIG_PPC32
+#define fsl_readl(addr) in_le32(addr)
+#define fsl_writel(addr, val32) out_le32(val32, addr)
+#else
+#define fsl_readl(addr) readl(addr)
+#define fsl_writel(addr, val32) writel(addr, val32)
+#endif
+
+/********************************************************************
+ * Internal Used Function
+********************************************************************/
+/*-----------------------------------------------------------------
+ * done() - retire a request; caller blocked irqs
+ * @status : request status to be set, only works when
+ * request is still in progress.
+ *--------------------------------------------------------------*/
+static void done(struct fsl_ep *ep, struct fsl_req *req, int status)
+{
+ struct fsl_udc *udc = NULL;
+ unsigned char stopped = ep->stopped;
+ struct ep_td_struct *curr_td, *next_td;
+ int j;
+
+ udc = (struct fsl_udc *)ep->udc;
+ /* Removed the req from fsl_ep->queue */
+ list_del_init(&req->queue);
+
+ /* req.status should be set as -EINPROGRESS in ep_queue() */
+ if (req->req.status == -EINPROGRESS)
+ req->req.status = status;
+ else
+ status = req->req.status;
+
+ /* Free dtd for the request */
+ next_td = req->head;
+ for (j = 0; j < req->dtd_count; j++) {
+ curr_td = next_td;
+ if (j != req->dtd_count - 1) {
+ next_td = curr_td->next_td_virt;
+ }
+ dma_pool_free(udc->td_pool, curr_td, curr_td->td_dma);
+ }
+
+ if (req->mapped) {
+ dma_unmap_single(ep->udc->gadget.dev.parent,
+ req->req.dma, req->req.length,
+ ep_is_in(ep)
+ ? DMA_TO_DEVICE
+ : DMA_FROM_DEVICE);
+ req->req.dma = DMA_ADDR_INVALID;
+ req->mapped = 0;
+ } else
+ dma_sync_single_for_cpu(ep->udc->gadget.dev.parent,
+ req->req.dma, req->req.length,
+ ep_is_in(ep)
+ ? DMA_TO_DEVICE
+ : DMA_FROM_DEVICE);
+
+ if (status && (status != -ESHUTDOWN))
+ VDBG("complete %s req %p stat %d len %u/%u",
+ ep->ep.name, &req->req, status,
+ req->req.actual, req->req.length);
+
+ ep->stopped = 1;
+
+ spin_unlock(&ep->udc->lock);
+ /* complete() is from gadget layer,
+ * eg fsg->bulk_in_complete() */
+ if (req->req.complete)
+ req->req.complete(&ep->ep, &req->req);
+
+ spin_lock(&ep->udc->lock);
+ ep->stopped = stopped;
+}
+
+/*-----------------------------------------------------------------
+ * nuke(): delete all requests related to this ep
+ * called with spinlock held
+ *--------------------------------------------------------------*/
+static void nuke(struct fsl_ep *ep, int status)
+{
+ ep->stopped = 1;
+
+ /* Flush fifo */
+ fsl_ep_fifo_flush(&ep->ep);
+
+ /* Whether this eq has request linked */
+ while (!list_empty(&ep->queue)) {
+ struct fsl_req *req = NULL;
+
+ req = list_entry(ep->queue.next, struct fsl_req, queue);
+ done(ep, req, status);
+ }
+}
+
+/*------------------------------------------------------------------
+ Internal Hardware related function
+ ------------------------------------------------------------------*/
+
+static int dr_controller_setup(struct fsl_udc *udc)
+{
+ unsigned int tmp = 0, portctrl = 0, ctrl = 0;
+ unsigned long timeout;
+#define FSL_UDC_RESET_TIMEOUT 1000
+
+ /* before here, make sure dr_regs has been initialized */
+ if (!udc)
+ return -EINVAL;
+
+ /* Stop and reset the usb controller */
+ tmp = fsl_readl(&dr_regs->usbcmd);
+ tmp &= ~USB_CMD_RUN_STOP;
+ fsl_writel(tmp, &dr_regs->usbcmd);
+
+ tmp = fsl_readl(&dr_regs->usbcmd);
+ tmp |= USB_CMD_CTRL_RESET;
+ fsl_writel(tmp, &dr_regs->usbcmd);
+
+ /* Wait for reset to complete */
+ timeout = jiffies + FSL_UDC_RESET_TIMEOUT;
+ while (fsl_readl(&dr_regs->usbcmd) & USB_CMD_CTRL_RESET) {
+ if (time_after(jiffies, timeout)) {
+ ERR("udc reset timeout! \n");
+ return -ETIMEDOUT;
+ }
+ cpu_relax();
+ }
+
+ /* Set the controller as device mode */
+ tmp = fsl_readl(&dr_regs->usbmode);
+ tmp |= USB_MODE_CTRL_MODE_DEVICE;
+ /* Disable Setup Lockout */
+ tmp |= USB_MODE_SETUP_LOCK_OFF;
+ fsl_writel(tmp, &dr_regs->usbmode);
+
+ /* Clear the setup status */
+ fsl_writel(0, &dr_regs->usbsts);
+
+ tmp = udc->ep_qh_dma;
+ tmp &= USB_EP_LIST_ADDRESS_MASK;
+ fsl_writel(tmp, &dr_regs->endpointlistaddr);
+
+ VDBG("vir[qh_base] is %p phy[qh_base] is 0x%8x reg is 0x%8x",
+ (int)udc->ep_qh, (int)tmp,
+ fsl_readl(&dr_regs->endpointlistaddr));
+
+ /* Config PHY interface */
+ portctrl = fsl_readl(&dr_regs->portsc1);
+ portctrl &= ~PORTSCX_PHY_TYPE_SEL;
+ switch (udc->phy_mode) {
+ case FSL_USB2_PHY_ULPI:
+ portctrl |= PORTSCX_PTS_ULPI;
+ break;
+ case FSL_USB2_PHY_UTMI:
+ case FSL_USB2_PHY_UTMI_WIDE:
+ portctrl |= PORTSCX_PTS_UTMI;
+ break;
+ case FSL_USB2_PHY_SERIAL:
+ portctrl |= PORTSCX_PTS_FSLS;
+ break;
+ default:
+ return -EINVAL;
+ }
+ fsl_writel(portctrl, &dr_regs->portsc1);
+
+ /* Config control enable i/o output, cpu endian register */
+ ctrl = __raw_readl(&usb_sys_regs->control);
+ ctrl |= USB_CTRL_IOENB;
+ __raw_writel(ctrl, &usb_sys_regs->control);
+
+#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE)
+ /* Turn on cache snooping hardware, since some PowerPC platforms
+ * wholly rely on hardware to deal with cache coherent. */
+
+ /* Setup Snooping for all the 4GB space */
+ tmp = SNOOP_SIZE_2GB; /* starts from 0x0, size 2G */
+ __raw_writel(tmp, &usb_sys_regs->snoop1);
+ tmp |= 0x80000000; /* starts from 0x8000000, size 2G */
+ __raw_writel(tmp, &usb_sys_regs->snoop2);
+#endif
+
+ return 0;
+}
+
+/* Enable DR irq and set controller to run state */
+static void dr_controller_run(struct fsl_udc *udc)
+{
+ u32 temp;
+
+ /* Enable DR irq reg */
+ temp = USB_INTR_INT_EN | USB_INTR_ERR_INT_EN
+ | USB_INTR_PTC_DETECT_EN | USB_INTR_RESET_EN
+ | USB_INTR_DEVICE_SUSPEND | USB_INTR_SYS_ERR_EN;
+
+ fsl_writel(temp, &dr_regs->usbintr);
+
+ /* Clear stopped bit */
+ udc->stopped = 0;
+
+ /* Set the controller as device mode */
+ temp = fsl_readl(&dr_regs->usbmode);
+ temp |= USB_MODE_CTRL_MODE_DEVICE;
+ fsl_writel(temp, &dr_regs->usbmode);
+
+ /* Set controller to Run */
+ temp = fsl_readl(&dr_regs->usbcmd);
+ temp |= USB_CMD_RUN_STOP;
+ fsl_writel(temp, &dr_regs->usbcmd);
+
+ return;
+}
+
+static void dr_controller_stop(struct fsl_udc *udc)
+{
+ unsigned int tmp;
+
+ /* disable all INTR */
+ fsl_writel(0, &dr_regs->usbintr);
+
+ /* Set stopped bit for isr */
+ udc->stopped = 1;
+
+ /* disable IO output */
+/* usb_sys_regs->control = 0; */
+
+ /* set controller to Stop */
+ tmp = fsl_readl(&dr_regs->usbcmd);
+ tmp &= ~USB_CMD_RUN_STOP;
+ fsl_writel(tmp, &dr_regs->usbcmd);
+
+ return;
+}
+
+void dr_ep_setup(unsigned char ep_num, unsigned char dir, unsigned char ep_type)
+{
+ unsigned int tmp_epctrl = 0;
+
+ tmp_epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
+ if (dir) {
+ if (ep_num)
+ tmp_epctrl |= EPCTRL_TX_DATA_TOGGLE_RST;
+ tmp_epctrl |= EPCTRL_TX_ENABLE;
+ tmp_epctrl |= ((unsigned int)(ep_type)
+ << EPCTRL_TX_EP_TYPE_SHIFT);
+ } else {
+ if (ep_num)
+ tmp_epctrl |= EPCTRL_RX_DATA_TOGGLE_RST;
+ tmp_epctrl |= EPCTRL_RX_ENABLE;
+ tmp_epctrl |= ((unsigned int)(ep_type)
+ << EPCTRL_RX_EP_TYPE_SHIFT);
+ }
+
+ fsl_writel(tmp_epctrl, &dr_regs->endptctrl[ep_num]);
+}
+
+static void
+dr_ep_change_stall(unsigned char ep_num, unsigned char dir, int value)
+{
+ u32 tmp_epctrl = 0;
+
+ tmp_epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
+
+ if (value) {
+ /* set the stall bit */
+ if (dir)
+ tmp_epctrl |= EPCTRL_TX_EP_STALL;
+ else
+ tmp_epctrl |= EPCTRL_RX_EP_STALL;
+ } else {
+ /* clear the stall bit and reset data toggle */
+ if (dir) {
+ tmp_epctrl &= ~EPCTRL_TX_EP_STALL;
+ tmp_epctrl |= EPCTRL_TX_DATA_TOGGLE_RST;
+ } else {
+ tmp_epctrl &= ~EPCTRL_RX_EP_STALL;
+ tmp_epctrl |= EPCTRL_RX_DATA_TOGGLE_RST;
+ }
+ }
+ fsl_writel(tmp_epctrl, &dr_regs->endptctrl[ep_num]);
+}
+
+/* Get stall status of a specific ep
+ Return: 0: not stalled; 1:stalled */
+static int dr_ep_get_stall(unsigned char ep_num, unsigned char dir)
+{
+ u32 epctrl;
+
+ epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
+ if (dir)
+ return (epctrl & EPCTRL_TX_EP_STALL) ? 1 : 0;
+ else
+ return (epctrl & EPCTRL_RX_EP_STALL) ? 1 : 0;
+}
+
+/********************************************************************
+ Internal Structure Build up functions
+********************************************************************/
+
+/*------------------------------------------------------------------
+* struct_ep_qh_setup(): set the Endpoint Capabilites field of QH
+ * @zlt: Zero Length Termination Select (1: disable; 0: enable)
+ * @mult: Mult field
+ ------------------------------------------------------------------*/
+static void struct_ep_qh_setup(struct fsl_udc *udc, unsigned char ep_num,
+ unsigned char dir, unsigned char ep_type,
+ unsigned int max_pkt_len,
+ unsigned int zlt, unsigned char mult)
+{
+ struct ep_queue_head *p_QH = &udc->ep_qh[2 * ep_num + dir];
+ unsigned int tmp = 0;
+
+ /* set the Endpoint Capabilites in QH */
+ switch (ep_type) {
+ case USB_ENDPOINT_XFER_CONTROL:
+ /* Interrupt On Setup (IOS). for control ep */
+ tmp = (max_pkt_len << EP_QUEUE_HEAD_MAX_PKT_LEN_POS)
+ | EP_QUEUE_HEAD_IOS;
+ break;
+ case USB_ENDPOINT_XFER_ISOC:
+ tmp = (max_pkt_len << EP_QUEUE_HEAD_MAX_PKT_LEN_POS)
+ | (mult << EP_QUEUE_HEAD_MULT_POS);
+ break;
+ case USB_ENDPOINT_XFER_BULK:
+ case USB_ENDPOINT_XFER_INT:
+ tmp = max_pkt_len << EP_QUEUE_HEAD_MAX_PKT_LEN_POS;
+ break;
+ default:
+ VDBG("error ep type is %d", ep_type);
+ return;
+ }
+ if (zlt)
+ tmp |= EP_QUEUE_HEAD_ZLT_SEL;
+ p_QH->max_pkt_length = cpu_to_le32(tmp);
+
+ return;
+}
+
+/* Setup qh structure and ep register for ep0. */
+static void ep0_setup(struct fsl_udc *udc)
+{
+ /* the intialization of an ep includes: fields in QH, Regs,
+ * fsl_ep struct */
+ struct_ep_qh_setup(udc, 0, USB_RECV, USB_ENDPOINT_XFER_CONTROL,
+ USB_MAX_CTRL_PAYLOAD, 0, 0);
+ struct_ep_qh_setup(udc, 0, USB_SEND, USB_ENDPOINT_XFER_CONTROL,
+ USB_MAX_CTRL_PAYLOAD, 0, 0);
+ dr_ep_setup(0, USB_RECV, USB_ENDPOINT_XFER_CONTROL);
+ dr_ep_setup(0, USB_SEND, USB_ENDPOINT_XFER_CONTROL);
+
+ return;
+
+}
+
+/***********************************************************************
+ Endpoint Management Functions
+***********************************************************************/
+
+/*-------------------------------------------------------------------------
+ * when configurations are set, or when interface settings change
+ * for example the do_set_interface() in gadget layer,
+ * the driver will enable or disable the relevant endpoints
+ * ep0 doesn't use this routine. It is always enabled.
+-------------------------------------------------------------------------*/
+static int fsl_ep_enable(struct usb_ep *_ep,
+ const struct usb_endpoint_descriptor *desc)
+{
+ struct fsl_udc *udc = NULL;
+ struct fsl_ep *ep = NULL;
+ unsigned short max = 0;
+ unsigned char mult = 0, zlt;
+ int retval = -EINVAL;
+ unsigned long flags = 0;
+
+ ep = container_of(_ep, struct fsl_ep, ep);
+
+ /* catch various bogus parameters */
+ if (!_ep || !desc || ep->desc
+ || (desc->bDescriptorType != USB_DT_ENDPOINT))
+ return -EINVAL;
+
+ udc = ep->udc;
+
+ if (!udc->driver || (udc->gadget.speed == USB_SPEED_UNKNOWN))
+ return -ESHUTDOWN;
+
+ max = le16_to_cpu(desc->wMaxPacketSize);
+
+ /* Disable automatic zlp generation. Driver is reponsible to indicate
+ * explicitly through req->req.zero. This is needed to enable multi-td
+ * request. */
+ zlt = 1;
+
+ /* Assume the max packet size from gadget is always correct */
+ switch (desc->bmAttributes & 0x03) {
+ case USB_ENDPOINT_XFER_CONTROL:
+ case USB_ENDPOINT_XFER_BULK:
+ case USB_ENDPOINT_XFER_INT:
+ /* mult = 0. Execute N Transactions as demonstrated by
+ * the USB variable length packet protocol where N is
+ * computed using the Maximum Packet Length (dQH) and
+ * the Total Bytes field (dTD) */
+ mult = 0;
+ break;
+ case USB_ENDPOINT_XFER_ISOC:
+ /* Calculate transactions needed for high bandwidth iso */
+ mult = (unsigned char)(1 + ((max >> 11) & 0x03));
+ max = max & 0x8ff; /* bit 0~10 */
+ /* 3 transactions at most */
+ if (mult > 3)
+ goto en_done;
+ break;
+ default:
+ goto en_done;
+ }
+
+ spin_lock_irqsave(&udc->lock, flags);
+ ep->ep.maxpacket = max;
+ ep->desc = desc;
+ ep->stopped = 0;
+
+ /* Controller related setup */
+ /* Init EPx Queue Head (Ep Capabilites field in QH
+ * according to max, zlt, mult) */
+ struct_ep_qh_setup(udc, (unsigned char) ep_index(ep),
+ (unsigned char) ((desc->bEndpointAddress & USB_DIR_IN)
+ ? USB_SEND : USB_RECV),
+ (unsigned char) (desc->bmAttributes
+ & USB_ENDPOINT_XFERTYPE_MASK),
+ max, zlt, mult);
+
+ /* Init endpoint ctrl register */
+ dr_ep_setup((unsigned char) ep_index(ep),
+ (unsigned char) ((desc->bEndpointAddress & USB_DIR_IN)
+ ? USB_SEND : USB_RECV),
+ (unsigned char) (desc->bmAttributes
+ & USB_ENDPOINT_XFERTYPE_MASK));
+
+ spin_unlock_irqrestore(&udc->lock, flags);
+ retval = 0;
+
+ VDBG("enabled %s (ep%d%s) maxpacket %d",ep->ep.name,
+ ep->desc->bEndpointAddress & 0x0f,
+ (desc->bEndpointAddress & USB_DIR_IN)
+ ? "in" : "out", max);
+en_done:
+ return retval;
+}
+
+/*---------------------------------------------------------------------
+ * @ep : the ep being unconfigured. May not be ep0
+ * Any pending and uncomplete req will complete with status (-ESHUTDOWN)
+*---------------------------------------------------------------------*/
+static int fsl_ep_disable(struct usb_ep *_ep)
+{
+ struct fsl_udc *udc = NULL;
+ struct fsl_ep *ep = NULL;
+ unsigned long flags = 0;
+ u32 epctrl;
+ int ep_num;
+
+ ep = container_of(_ep, struct fsl_ep, ep);
+ if (!_ep || !ep->desc) {
+ VDBG("%s not enabled", _ep ? ep->ep.name : NULL);
+ return -EINVAL;
+ }
+
+ /* disable ep on controller */
+ ep_num = ep_index(ep);
+ epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
+ if (ep_is_in(ep))
+ epctrl &= ~EPCTRL_TX_ENABLE;
+ else
+ epctrl &= ~EPCTRL_RX_ENABLE;
+ fsl_writel(epctrl, &dr_regs->endptctrl[ep_num]);
+
+ udc = (struct fsl_udc *)ep->udc;
+ spin_lock_irqsave(&udc->lock, flags);
+
+ /* nuke all pending requests (does flush) */
+ nuke(ep, -ESHUTDOWN);
+
+ ep->desc = 0;
+ ep->stopped = 1;
+ spin_unlock_irqrestore(&udc->lock, flags);
+
+ VDBG("disabled %s OK", _ep->name);
+ return 0;
+}
+
+/*---------------------------------------------------------------------
+ * allocate a request object used by this endpoint
+ * the main operation is to insert the req->queue to the eq->queue
+ * Returns the request, or null if one could not be allocated
+*---------------------------------------------------------------------*/
+static struct usb_request *
+fsl_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags)
+{
+ struct fsl_req *req = NULL;
+
+ 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 fsl_free_request(struct usb_ep *_ep, struct usb_request *_req)
+{
+ struct fsl_req *req = NULL;
+
+ req = container_of(_req, struct fsl_req, req);
+
+ if (_req)
+ kfree(req);
+}
+
+/*------------------------------------------------------------------
+ * Allocate an I/O buffer
+*---------------------------------------------------------------------*/
+static void *fsl_alloc_buffer(struct usb_ep *_ep, unsigned bytes,
+ dma_addr_t *dma, gfp_t gfp_flags)
+{
+ struct fsl_ep *ep;
+
+ if (!_ep)
+ return NULL;
+
+ ep = container_of(_ep, struct fsl_ep, ep);
+
+ return dma_alloc_coherent(ep->udc->gadget.dev.parent,
+ bytes, dma, gfp_flags);
+}
+
+/*------------------------------------------------------------------
+ * frees an i/o buffer
+*---------------------------------------------------------------------*/
+static void fsl_free_buffer(struct usb_ep *_ep, void *buf,
+ dma_addr_t dma, unsigned bytes)
+{
+ struct fsl_ep *ep;
+
+ if (!_ep)
+ return NULL;
+
+ ep = container_of(_ep, struct fsl_ep, ep);
+
+ dma_free_coherent(ep->udc->gadget.dev.parent, bytes, buf, dma);
+}
+
+/*-------------------------------------------------------------------------*/
+static int fsl_queue_td(struct fsl_ep *ep, struct fsl_req *req)
+{
+ int i = ep_index(ep) * 2 + ep_is_in(ep);
+ u32 temp, bitmask, tmp_stat;
+ struct ep_queue_head *dQH = &ep->udc->ep_qh[i];
+
+ /* VDBG("QH addr Register 0x%8x", dr_regs->endpointlistaddr);
+ VDBG("ep_qh[%d] addr is 0x%8x", i, (u32)&(ep->udc->ep_qh[i])); */
+
+ bitmask = ep_is_in(ep)
+ ? (1 << (ep_index(ep) + 16))
+ : (1 << (ep_index(ep)));
+
+ /* check if the pipe is empty */
+ if (!(list_empty(&ep->queue))) {
+ /* Add td to the end */
+ struct fsl_req *lastreq;
+ lastreq = list_entry(ep->queue.prev, struct fsl_req, queue);
+ lastreq->tail->next_td_ptr =
+ cpu_to_le32(req->head->td_dma & DTD_ADDR_MASK);
+ /* Read prime bit, if 1 goto done */
+ if (fsl_readl(&dr_regs->endpointprime) & bitmask)
+ goto out;
+
+ do {
+ /* Set ATDTW bit in USBCMD */
+ temp = fsl_readl(&dr_regs->usbcmd);
+ fsl_writel(temp | USB_CMD_ATDTW, &dr_regs->usbcmd);
+
+ /* Read correct status bit */
+ tmp_stat = fsl_readl(&dr_regs->endptstatus) & bitmask;
+
+ } while (!(fsl_readl(&dr_regs->usbcmd) & USB_CMD_ATDTW));
+
+ /* Write ATDTW bit to 0 */
+ temp = fsl_readl(&dr_regs->usbcmd);
+ fsl_writel(temp & ~USB_CMD_ATDTW, &dr_regs->usbcmd);
+
+ if (tmp_stat)
+ goto out;
+ }
+
+ /* Write dQH next pointer and terminate bit to 0 */
+ temp = req->head->td_dma & EP_QUEUE_HEAD_NEXT_POINTER_MASK;
+ dQH->next_dtd_ptr = cpu_to_le32(temp);
+
+ /* Clear active and halt bit */
+ temp = cpu_to_le32(~(EP_QUEUE_HEAD_STATUS_ACTIVE
+ | EP_QUEUE_HEAD_STATUS_HALT));
+ dQH->size_ioc_int_sts &= temp;
+
+ /* Prime endpoint by writing 1 to ENDPTPRIME */
+ temp = ep_is_in(ep)
+ ? (1 << (ep_index(ep) + 16))
+ : (1 << (ep_index(ep)));
+ fsl_writel(temp, &dr_regs->endpointprime);
+out:
+ return 0;
+}
+
+/* Fill in the dTD structure
+ * @req: request that the transfer belongs to
+ * @length: return actually data length of the dTD
+ * @dma: return dma address of the dTD
+ * @is_last: return flag if it is the last dTD of the request
+ * return: pointer to the built dTD */
+static struct ep_td_struct *fsl_build_dtd(struct fsl_req *req, unsigned *length,
+ dma_addr_t *dma, int *is_last)
+{
+ u32 swap_temp;
+ struct ep_td_struct *dtd;
+
+ /* how big will this transfer be? */
+ *length = min(req->req.length - req->req.actual,
+ (unsigned)EP_MAX_LENGTH_TRANSFER);
+
+ dtd = dma_pool_alloc(udc_controller->td_pool, GFP_KERNEL, dma);
+ if (dtd == NULL)
+ return dtd;
+
+ dtd->td_dma = *dma;
+ /* Clear reserved field */
+ swap_temp = cpu_to_le32(dtd->size_ioc_sts);
+ swap_temp &= ~DTD_RESERVED_FIELDS;
+ dtd->size_ioc_sts = cpu_to_le32(swap_temp);
+
+ /* Init all of buffer page pointers */
+ swap_temp = (u32) (req->req.dma + req->req.actual);
+ dtd->buff_ptr0 = cpu_to_le32(swap_temp);
+ dtd->buff_ptr1 = cpu_to_le32(swap_temp + 0x1000);
+ dtd->buff_ptr2 = cpu_to_le32(swap_temp + 0x2000);
+ dtd->buff_ptr3 = cpu_to_le32(swap_temp + 0x3000);
+ dtd->buff_ptr4 = cpu_to_le32(swap_temp + 0x4000);
+
+ req->req.actual += *length;
+
+ /* zlp is needed if req->req.zero is set */
+ if (req->req.zero) {
+ if (*length == 0 || (*length % req->ep->ep.maxpacket) != 0)
+ *is_last = 1;
+ else
+ *is_last = 0;
+ } else if (req->req.length == req->req.actual)
+ *is_last = 1;
+ else
+ *is_last = 0;
+
+ if ((*is_last) == 0)
+ VDBG("multi-dtd request!\n");
+ /* Fill in the transfer size; set active bit */
+ swap_temp = ((*length << DTD_LENGTH_BIT_POS) | DTD_STATUS_ACTIVE);
+
+ /* Enable interrupt for the last dtd of a request */
+ if (*is_last && !req->req.no_interrupt)
+ swap_temp |= DTD_IOC;
+
+ dtd->size_ioc_sts = cpu_to_le32(swap_temp);
+
+ mb();
+
+ VDBG("length = %d address= 0x%x", *length, (int)*dma);
+
+ return dtd;
+}
+
+/* Generate dtd chain for a request */
+static int fsl_req_to_dtd(struct fsl_req *req)
+{
+ unsigned count;
+ int is_last;
+ int is_first =1;
+ struct ep_td_struct *last_dtd = NULL, *dtd;
+ dma_addr_t dma;
+
+ do {
+ dtd = fsl_build_dtd(req, &count, &dma, &is_last);
+ if (dtd == NULL)
+ return -ENOMEM;
+
+ if (is_first) {
+ is_first = 0;
+ req->head = dtd;
+ } else {
+ last_dtd->next_td_ptr = cpu_to_le32(dma);
+ last_dtd->next_td_virt = dtd;
+ }
+ last_dtd = dtd;
+
+ req->dtd_count++;
+ } while (!is_last);
+
+ dtd->next_td_ptr = cpu_to_le32(DTD_NEXT_TERMINATE);
+
+ req->tail = dtd;
+
+ return 0;
+}
+
+/* queues (submits) an I/O request to an endpoint */
+static int
+fsl_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
+{
+ struct fsl_ep *ep = container_of(_ep, struct fsl_ep, ep);
+ struct fsl_req *req = container_of(_req, struct fsl_req, req);
+ struct fsl_udc *udc;
+ unsigned long flags;
+ int is_iso = 0;
+
+ /* catch various bogus parameters */
+ if (!_req || !req->req.complete || !req->req.buf
+ || !list_empty(&req->queue)) {
+ VDBG("%s, bad params\n", __FUNCTION__);
+ return -EINVAL;
+ }
+ if (!_ep || (!ep->desc && ep_index(ep))) {
+ VDBG("%s, bad ep\n", __FUNCTION__);
+ return -EINVAL;
+ }
+ if (ep->desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) {
+ if (req->req.length > ep->ep.maxpacket)
+ return -EMSGSIZE;
+ is_iso = 1;
+ }
+
+ udc = ep->udc;
+ 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;
+ req->dtd_count = 0;
+
+ spin_lock_irqsave(&udc->lock, flags);
+
+ /* build dtds and push them to device queue */
+ if (!fsl_req_to_dtd(req)) {
+ fsl_queue_td(ep, req);
+ } else {
+ spin_unlock_irqrestore(&udc->lock, flags);
+ return -ENOMEM;
+ }
+
+ /* Update ep0 state */
+ if ((ep_index(ep) == 0))
+ udc->ep0_state = DATA_STATE_XMIT;
+
+ /* irq handler advances the queue */
+ if (req != NULL)
+ list_add_tail(&req->queue, &ep->queue);
+ spin_unlock_irqrestore(&udc->lock, flags);
+
+ return 0;
+}
+
+/* dequeues (cancels, unlinks) an I/O request from an endpoint */
+static int fsl_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
+{
+ struct fsl_ep *ep = container_of(_ep, struct fsl_ep, ep);
+ struct fsl_req *req;
+ unsigned long flags;
+ int ep_num, stopped, ret = 0;
+ u32 epctrl;
+
+ if (!_ep || !_req)
+ return -EINVAL;
+
+ spin_lock_irqsave(&ep->udc->lock, flags);
+ stopped = ep->stopped;
+
+ /* Stop the ep before we deal with the queue */
+ ep->stopped = 1;
+ ep_num = ep_index(ep);
+ epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
+ if (ep_is_in(ep))
+ epctrl &= ~EPCTRL_TX_ENABLE;
+ else
+ epctrl &= ~EPCTRL_RX_ENABLE;
+ fsl_writel(epctrl, &dr_regs->endptctrl[ep_num]);
+
+ /* 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) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /* The request is in progress, or completed but not dequeued */
+ if (ep->queue.next == &req->queue) {
+ _req->status = -ECONNRESET;
+ fsl_ep_fifo_flush(_ep); /* flush current transfer */
+
+ /* The request isn't the last request in this ep queue */
+ if (req->queue.next != &ep->queue) {
+ struct ep_queue_head *qh;
+ struct fsl_req *next_req;
+
+ qh = ep->qh;
+ next_req = list_entry(req->queue.next, struct fsl_req,
+ queue);
+
+ /* Point the QH to the first TD of next request */
+ fsl_writel((u32) next_req->head, &qh->curr_dtd_ptr);
+ }
+
+ /* The request hasn't been processed, patch up the TD chain */
+ } else {
+ struct fsl_req *prev_req;
+
+ prev_req = list_entry(req->queue.prev, struct fsl_req, queue);
+ fsl_writel(fsl_readl(&req->tail->next_td_ptr),
+ &prev_req->tail->next_td_ptr);
+
+ }
+
+ done(ep, req, -ECONNRESET);
+
+ /* Enable EP */
+out: epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
+ if (ep_is_in(ep))
+ epctrl |= EPCTRL_TX_ENABLE;
+ else
+ epctrl |= EPCTRL_RX_ENABLE;
+ fsl_writel(epctrl, &dr_regs->endptctrl[ep_num]);
+ ep->stopped = stopped;
+
+ spin_unlock_irqrestore(&ep->udc->lock, flags);
+ return ret;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/*-----------------------------------------------------------------
+ * 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 fsl_ep_set_halt(struct usb_ep *_ep, int value)
+{
+ struct fsl_ep *ep = NULL;
+ unsigned long flags = 0;
+ int status = -EOPNOTSUPP; /* operation not supported */
+ unsigned char ep_dir = 0, ep_num = 0;
+ struct fsl_udc *udc = NULL;
+
+ ep = container_of(_ep, struct fsl_ep, ep);
+ udc = ep->udc;
+ if (!_ep || !ep->desc) {
+ status = -EINVAL;
+ goto out;
+ }
+
+ if (ep->desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) {
+ status = -EOPNOTSUPP;
+ goto out;
+ }
+
+ /* 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;
+ ep_dir = ep_is_in(ep) ? USB_SEND : USB_RECV;
+ ep_num = (unsigned char)(ep_index(ep));
+ spin_lock_irqsave(&ep->udc->lock, flags);
+ dr_ep_change_stall(ep_num, ep_dir, value);
+ spin_unlock_irqrestore(&ep->udc->lock, flags);
+
+ if (ep_index(ep) == 0) {
+ udc->ep0_state = WAIT_FOR_SETUP;
+ udc->ep0_dir = 0;
+ }
+out:
+ VDBG(" %s %s halt stat %d", ep->ep.name,
+ value ? "set" : "clear", status);
+
+ return status;
+}
+
+static void fsl_ep_fifo_flush(struct usb_ep *_ep)
+{
+ struct fsl_ep *ep;
+ int ep_num, ep_dir;
+ u32 bits;
+ unsigned long timeout;
+#define FSL_UDC_FLUSH_TIMEOUT 1000
+
+ if (!_ep) {
+ return;
+ } else {
+ ep = container_of(_ep, struct fsl_ep, ep);
+ if (!ep->desc)
+ return;
+ }
+ ep_num = ep_index(ep);
+ ep_dir = ep_is_in(ep) ? USB_SEND : USB_RECV;
+
+ if (ep_num == 0)
+ bits = (1 << 16) | 1;
+ else if (ep_dir == USB_SEND)
+ bits = 1 << (16 + ep_num);
+ else
+ bits = 1 << ep_num;
+
+ timeout = jiffies + FSL_UDC_FLUSH_TIMEOUT;
+ do {
+ fsl_writel(bits, &dr_regs->endptflush);
+
+ /* Wait until flush complete */
+ while (fsl_readl(&dr_regs->endptflush)) {
+ if (time_after(jiffies, timeout)) {
+ ERR("ep flush timeout\n");
+ return;
+ }
+ cpu_relax();
+ }
+ /* See if we need to flush again */
+ } while (fsl_readl(&dr_regs->endptstatus) & bits);
+}
+
+static struct usb_ep_ops fsl_ep_ops = {
+ .enable = fsl_ep_enable,
+ .disable = fsl_ep_disable,
+
+ .alloc_request = fsl_alloc_request,
+ .free_request = fsl_free_request,
+
+ .alloc_buffer = fsl_alloc_buffer,
+ .free_buffer = fsl_free_buffer,
+
+ .queue = fsl_ep_queue,
+ .dequeue = fsl_ep_dequeue,
+
+ .set_halt = fsl_ep_set_halt,
+ .fifo_flush = fsl_ep_fifo_flush, /* flush fifo */
+};
+
+/*-------------------------------------------------------------------------
+ Gadget Driver Layer Operations
+-------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------
+ * Get the current frame number (from DR frame_index Reg )
+ *----------------------------------------------------------------------*/
+static int fsl_get_frame(struct usb_gadget *gadget)
+{
+ return (int)(fsl_readl(&dr_regs->frindex) & USB_FRINDEX_MASKS);
+}
+
+/*-----------------------------------------------------------------------
+ * Tries to wake up the host connected to this gadget
+ -----------------------------------------------------------------------*/
+static int fsl_wakeup(struct usb_gadget *gadget)
+{
+ struct fsl_udc *udc = container_of(gadget, struct fsl_udc, gadget);
+ u32 portsc;
+
+ /* Remote wakeup feature not enabled by host */
+ if (!udc->remote_wakeup)
+ return -ENOTSUPP;
+
+ portsc = fsl_readl(&dr_regs->portsc1);
+ /* not suspended? */
+ if (!(portsc & PORTSCX_PORT_SUSPEND))
+ return 0;
+ /* trigger force resume */
+ portsc |= PORTSCX_PORT_FORCE_RESUME;
+ fsl_writel(portsc, &dr_regs->portsc1);
+ return 0;
+}
+
+static int can_pullup(struct fsl_udc *udc)
+{
+ return udc->driver && udc->softconnect && udc->vbus_active;
+}
+
+/* Notify controller that VBUS is powered, Called by whatever
+ detects VBUS sessions */
+static int fsl_vbus_session(struct usb_gadget *gadget, int is_active)
+{
+ struct fsl_udc *udc;
+ unsigned long flags;
+
+ udc = container_of(gadget, struct fsl_udc, gadget);
+ spin_lock_irqsave(&udc->lock, flags);
+ VDBG("VBUS %s\n", is_active ? "on" : "off");
+ udc->vbus_active = (is_active != 0);
+ if (can_pullup(udc))
+ fsl_writel((fsl_readl(&dr_regs->usbcmd) | USB_CMD_RUN_STOP),
+ &dr_regs->usbcmd);
+ else
+ fsl_writel((fsl_readl(&dr_regs->usbcmd) & ~USB_CMD_RUN_STOP),
+ &dr_regs->usbcmd);
+ spin_unlock_irqrestore(&udc->lock, flags);
+ return 0;
+}
+
+/* constrain controller's VBUS power usage
+ * This call is used by gadget drivers during SET_CONFIGURATION calls,
+ * reporting how much power the device may consume. For example, this
+ * could affect how quickly batteries are recharged.
+ *
+ * Returns zero on success, else negative errno.
+ */
+static int fsl_vbus_draw(struct usb_gadget *gadget, unsigned mA)
+{
+#ifdef CONFIG_USB_OTG
+ struct fsl_udc *udc;
+
+ udc = container_of(gadget, struct fsl_udc, gadget);
+
+ if (udc->transceiver)
+ return otg_set_power(udc->transceiver, mA);
+#endif
+ return -ENOTSUPP;
+}
+
+/* Change Data+ pullup status
+ * this func is used by usb_gadget_connect/disconnet
+ */
+static int fsl_pullup(struct usb_gadget *gadget, int is_on)
+{
+ struct fsl_udc *udc;
+
+ udc = container_of(gadget, struct fsl_udc, gadget);
+ udc->softconnect = (is_on != 0);
+ if (can_pullup(udc))
+ fsl_writel((fsl_readl(&dr_regs->usbcmd) | USB_CMD_RUN_STOP),
+ &dr_regs->usbcmd);
+ else
+ fsl_writel((fsl_readl(&dr_regs->usbcmd) & ~USB_CMD_RUN_STOP),
+ &dr_regs->usbcmd);
+
+ return 0;
+}
+
+/* defined in usb_gadget.h */
+static struct usb_gadget_ops fsl_gadget_ops = {
+ .get_frame = fsl_get_frame,
+ .wakeup = fsl_wakeup,
+/* .set_selfpowered = fsl_set_selfpowered, */ /* Always selfpowered */
+ .vbus_session = fsl_vbus_session,
+ .vbus_draw = fsl_vbus_draw,
+ .pullup = fsl_pullup,
+};
+
+/* Set protocol stall on ep0, protocol stall will automatically be cleared
+ on new transaction */
+static void ep0stall(struct fsl_udc *udc)
+{
+ u32 tmp;
+
+ /* must set tx and rx to stall at the same time */
+ tmp = fsl_readl(&dr_regs->endptctrl[0]);
+ tmp |= EPCTRL_TX_EP_STALL | EPCTRL_RX_EP_STALL;
+ fsl_writel(tmp, &dr_regs->endptctrl[0]);
+ udc->ep0_state = WAIT_FOR_SETUP;
+ udc->ep0_dir = 0;
+}
+
+/* Prime a status phase for ep0 */
+static int ep0_prime_status(struct fsl_udc *udc, int direction)
+{
+ struct fsl_req *req = udc->status_req;
+ struct fsl_ep *ep;
+ int status = 0;
+
+ if (direction == EP_DIR_IN)
+ udc->ep0_dir = USB_DIR_IN;
+ else
+ udc->ep0_dir = USB_DIR_OUT;
+
+ ep = &udc->eps[0];
+ udc->ep0_state = WAIT_FOR_OUT_STATUS;
+
+ req->ep = ep;
+ req->req.length = 0;
+ req->req.status = -EINPROGRESS;
+ req->req.actual = 0;
+ req->req.complete = NULL;
+ req->dtd_count = 0;
+
+ if (fsl_req_to_dtd(req) == 0)
+ status = fsl_queue_td(ep, req);
+ else
+ return -ENOMEM;
+
+ if (status)
+ ERR("Can't queue ep0 status request \n");
+ list_add_tail(&req->queue, &ep->queue);
+
+ return status;
+}
+
+static inline int udc_reset_ep_queue(struct fsl_udc *udc, u8 pipe)
+{
+ struct fsl_ep *ep = get_ep_by_pipe(udc, pipe);
+
+ if (!ep->name)
+ return 0;
+
+ nuke(ep, -ESHUTDOWN);
+
+ return 0;
+}
+
+/*
+ * ch9 Set address
+ */
+static void ch9setaddress(struct fsl_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 */
+ if (ep0_prime_status(udc, EP_DIR_IN))
+ ep0stall(udc);
+}
+
+/*
+ * ch9 Get status
+ */
+static void ch9getstatus(struct fsl_udc *udc, u8 request_type, u16 value,
+ u16 index, u16 length)
+{
+ u16 tmp = 0; /* Status, cpu endian */
+
+ struct fsl_req *req;
+ struct fsl_ep *ep;
+ int status = 0;
+
+ ep = &udc->eps[0];
+
+ if ((request_type & USB_RECIP_MASK) == USB_RECIP_DEVICE) {
+ /* Get device status */
+ tmp = 1 << USB_DEVICE_SELF_POWERED;
+ tmp |= udc->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP;
+ } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_INTERFACE) {
+ /* Get interface status */
+ /* We don't have interface information in udc driver */
+ tmp = 0;
+ } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_ENDPOINT) {
+ /* Get endpoint status */
+ struct fsl_ep *target_ep;
+
+ target_ep = get_ep_by_pipe(udc, get_pipe_by_windex(index));
+
+ /* stall if endpoint doesn't exist */
+ if (!target_ep->desc)
+ goto stall;
+ tmp = dr_ep_get_stall(ep_index(target_ep), ep_is_in(target_ep))
+ << USB_ENDPOINT_HALT;
+ }
+
+ udc->ep0_dir = USB_DIR_IN;
+ /* Borrow the per device status_req */
+ req = udc->status_req;
+ /* Fill in the reqest structure */
+ *((u16 *) req->req.buf) = cpu_to_le16(tmp);
+ req->ep = ep;
+ req->req.length = 2;
+ req->req.status = -EINPROGRESS;
+ req->req.actual = 0;
+ req->req.complete = NULL;
+ req->dtd_count = 0;
+
+ /* prime the data phase */
+ if ((fsl_req_to_dtd(req) == 0))
+ status = fsl_queue_td(ep, req);
+ else /* no mem */
+ goto stall;
+
+ if (status) {
+ ERR("Can't respond to getstatus request \n");
+ goto stall;
+ }
+ list_add_tail(&req->queue, &ep->queue);
+ udc->ep0_state = DATA_STATE_XMIT;
+ return;
+stall:
+ ep0stall(udc);
+}
+
+static void setup_received_irq(struct fsl_udc *udc,
+ struct usb_ctrlrequest *setup)
+{
+ u16 wValue = le16_to_cpu(setup->wValue);
+ u16 wIndex = le16_to_cpu(setup->wIndex);
+ u16 wLength = le16_to_cpu(setup->wLength);
+
+ udc_reset_ep_queue(udc, 0);
+
+ switch (setup->bRequest) {
+ /* Request that need Data+Status phase from udc */
+ case USB_REQ_GET_STATUS:
+ if ((setup->bRequestType & (USB_DIR_IN | USB_TYPE_STANDARD))
+ != (USB_DIR_IN | USB_TYPE_STANDARD))
+ break;
+ ch9getstatus(udc, setup->bRequestType, wValue, wIndex, wLength);
+ break;
+
+ /* Requests that need Status phase from udc */
+ case USB_REQ_SET_ADDRESS:
+ if (setup->bRequestType != (USB_DIR_OUT | USB_TYPE_STANDARD
+ | USB_RECIP_DEVICE))
+ break;
+ ch9setaddress(udc, wValue, wIndex, wLength);
+ break;
+
+ /* Handled by udc, no data, status by udc */
+ case USB_REQ_CLEAR_FEATURE:
+ case USB_REQ_SET_FEATURE:
+ { /* status transaction */
+ int rc = -EOPNOTSUPP;
+
+ if ((setup->bRequestType & USB_RECIP_MASK)
+ == USB_RECIP_ENDPOINT) {
+ int pipe = get_pipe_by_windex(wIndex);
+ struct fsl_ep *ep;
+
+ if (wValue != 0 || wLength != 0 || pipe > udc->max_ep)
+ break;
+ ep = get_ep_by_pipe(udc, pipe);
+
+ spin_unlock(&udc->lock);
+ rc = fsl_ep_set_halt(&ep->ep,
+ (setup->bRequest == USB_REQ_SET_FEATURE)
+ ? 1 : 0);
+ spin_lock(&udc->lock);
+
+ } else if ((setup->bRequestType & USB_RECIP_MASK)
+ == USB_RECIP_DEVICE) {
+ /* Note: The driver has not include OTG support yet.
+ * This will be set when OTG support is added */
+ if (!udc->gadget.is_otg)
+ break;
+ else if (setup->bRequest == USB_DEVICE_B_HNP_ENABLE)
+ udc->gadget.b_hnp_enable = 1;
+ else if (setup->bRequest == USB_DEVICE_A_HNP_SUPPORT)
+ udc->gadget.a_hnp_support = 1;
+ else if (setup->bRequest ==
+ USB_DEVICE_A_ALT_HNP_SUPPORT)
+ udc->gadget.a_alt_hnp_support = 1;
+ rc = 0;
+ }
+ if (rc == 0) {
+ if (ep0_prime_status(udc, EP_DIR_IN))
+ ep0stall(udc);
+ }
+ break;
+ }
+ /* Requests handled by gadget */
+ default:
+ if (wLength) {
+ /* Data phase from gadget, status phase from udc */
+ udc->ep0_dir = (setup->bRequestType & USB_DIR_IN)
+ ? USB_DIR_IN : USB_DIR_OUT;
+ spin_unlock(&udc->lock);
+ if (udc->driver->setup(&udc->gadget,
+ &udc->local_setup_buff) < 0)
+ ep0stall(udc);
+ spin_lock(&udc->lock);
+ udc->ep0_state = (setup->bRequestType & USB_DIR_IN)
+ ? DATA_STATE_XMIT : DATA_STATE_RECV;
+
+ } 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)
+ ep0stall(udc);
+ spin_lock(&udc->lock);
+ udc->ep0_state = WAIT_FOR_OUT_STATUS;
+ }
+ break;
+ }
+}
+
+/* Process request for Data or Status phase of ep0
+ * prime status phase if needed */
+static void ep0_req_complete(struct fsl_udc *udc, struct fsl_ep *ep0,
+ struct fsl_req *req)
+{
+ if (udc->usb_state == USB_STATE_ADDRESS) {
+ /* Set the new address */
+ u32 new_address = (u32) udc->device_address;
+ fsl_writel(new_address << USB_DEVICE_ADDRESS_BIT_POS,
+ &dr_regs->deviceaddr);
+ }
+
+ done(ep0, req, 0);
+
+ switch (udc->ep0_state) {
+ case DATA_STATE_XMIT:
+ /* receive status phase */
+ if (ep0_prime_status(udc, EP_DIR_OUT))
+ ep0stall(udc);
+ break;
+ case DATA_STATE_RECV:
+ /* send status phase */
+ if (ep0_prime_status(udc, EP_DIR_IN))
+ ep0stall(udc);
+ break;
+ case WAIT_FOR_OUT_STATUS:
+ udc->ep0_state = WAIT_FOR_SETUP;
+ break;
+ case WAIT_FOR_SETUP:
+ ERR("Unexpect ep0 packets \n");
+ break;
+ default:
+ ep0stall(udc);
+ break;
+ }
+}
+
+/* Tripwire mechanism to ensure a setup packet payload is extracted without
+ * being corrupted by another incoming setup packet */
+static void tripwire_handler(struct fsl_udc *udc, u8 ep_num, u8 *buffer_ptr)
+{
+ u32 temp;
+ struct ep_queue_head *qh;
+
+ qh = &udc->ep_qh[ep_num * 2 + EP_DIR_OUT];
+
+ /* Clear bit in ENDPTSETUPSTAT */
+ temp = fsl_readl(&dr_regs->endptsetupstat);
+ fsl_writel(temp | (1 << ep_num), &dr_regs->endptsetupstat);
+
+ /* while a hazard exists when setup package arrives */
+ do {
+ /* Set Setup Tripwire */
+ temp = fsl_readl(&dr_regs->usbcmd);
+ fsl_writel(temp | USB_CMD_SUTW, &dr_regs->usbcmd);
+
+ /* Copy the setup packet to local buffer */
+ memcpy(buffer_ptr, (u8 *) qh->setup_buffer, 8);
+ } while (!(fsl_readl(&dr_regs->usbcmd) & USB_CMD_SUTW));
+
+ /* Clear Setup Tripwire */
+ temp = fsl_readl(&dr_regs->usbcmd);
+ fsl_writel(temp & ~USB_CMD_SUTW, &dr_regs->usbcmd);
+}
+
+/* process-ep_req(): free the completed Tds for this req */
+static int process_ep_req(struct fsl_udc *udc, int pipe,
+ struct fsl_req *curr_req)
+{
+ struct ep_td_struct *curr_td;
+ int td_complete, actual, remaining_length, j, tmp;
+ int status = 0;
+ int errors = 0;
+ struct ep_queue_head *curr_qh = &udc->ep_qh[pipe];
+ int direction = pipe % 2;
+
+ curr_td = curr_req->head;
+ td_complete = 0;
+ actual = curr_req->req.length;
+
+ for (j = 0; j < curr_req->dtd_count; j++) {
+ remaining_length = (le32_to_cpu(curr_td->size_ioc_sts)
+ & DTD_PACKET_SIZE)
+ >> DTD_LENGTH_BIT_POS;
+ actual -= remaining_length;
+
+ if ((errors = le32_to_cpu(curr_td->size_ioc_sts) &
+ DTD_ERROR_MASK)) {
+ if (errors & DTD_STATUS_HALTED) {
+ ERR("dTD error %08x QH=%d\n", errors, pipe);
+ /* Clear the errors and Halt condition */
+ tmp = le32_to_cpu(curr_qh->size_ioc_int_sts);
+ tmp &= ~errors;
+ curr_qh->size_ioc_int_sts = cpu_to_le32(tmp);
+ status = -EPIPE;
+ /* FIXME: continue with next queued TD? */
+
+ break;
+ }
+ if (errors & DTD_STATUS_DATA_BUFF_ERR) {
+ VDBG("Transfer overflow");
+ status = -EPROTO;
+ break;
+ } else if (errors & DTD_STATUS_TRANSACTION_ERR) {
+ VDBG("ISO error");
+ status = -EILSEQ;
+ break;
+ } else
+ ERR("Unknown error has occured (0x%x)!\r\n",
+ errors);
+
+ } else if (le32_to_cpu(curr_td->size_ioc_sts)
+ & DTD_STATUS_ACTIVE) {
+ VDBG("Request not complete");
+ status = REQ_UNCOMPLETE;
+ return status;
+ } else if (remaining_length) {
+ if (direction) {
+ VDBG("Transmit dTD remaining length not zero");
+ status = -EPROTO;
+ break;
+ } else {
+ td_complete++;
+ break;
+ }
+ } else {
+ td_complete++;
+ VDBG("dTD transmitted successful ");
+ }
+
+ if (j != curr_req->dtd_count - 1)
+ curr_td = (struct ep_td_struct *)curr_td->next_td_virt;
+ }
+
+ if (status)
+ return status;
+
+ curr_req->req.actual = actual;
+
+ return 0;
+}
+
+/* Process a DTD completion interrupt */
+static void dtd_complete_irq(struct fsl_udc *udc)
+{
+ u32 bit_pos;
+ int i, ep_num, direction, bit_mask, status;
+ struct fsl_ep *curr_ep;
+ struct fsl_req *curr_req, *temp_req;
+
+ /* Clear the bits in the register */
+ bit_pos = fsl_readl(&dr_regs->endptcomplete);
+ fsl_writel(bit_pos, &dr_regs->endptcomplete);
+
+ if (!bit_pos)
+ return;
+
+ for (i = 0; i < udc->max_ep * 2; i++) {
+ ep_num = i >> 1;
+ direction = i % 2;
+
+ bit_mask = 1 << (ep_num + 16 * direction);
+
+ if (!(bit_pos & bit_mask))
+ continue;
+
+ curr_ep = get_ep_by_pipe(udc, i);
+
+ /* If the ep is configured */
+ if (curr_ep->name == NULL) {
+ WARN("Invalid EP?");
+ continue;
+ }
+
+ /* process the req queue until an uncomplete request */
+ list_for_each_entry_safe(curr_req, temp_req, &curr_ep->queue,
+ queue) {
+ status = process_ep_req(udc, i, curr_req);
+
+ VDBG("status of process_ep_req= %d, ep = %d",
+ status, ep_num);
+ if (status == REQ_UNCOMPLETE)
+ break;
+ /* write back status to req */
+ curr_req->req.status = status;
+
+ if (ep_num == 0) {
+ ep0_req_complete(udc, curr_ep, curr_req);
+ break;
+ } else
+ done(curr_ep, curr_req, status);
+ }
+ }
+}
+
+/* Process a port change interrupt */
+static void port_change_irq(struct fsl_udc *udc)
+{
+ u32 speed;
+
+ if (udc->bus_reset)
+ udc->bus_reset = 0;
+
+ /* Bus resetting is finished */
+ if (!(fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_RESET)) {
+ /* Get the speed */
+ speed = (fsl_readl(&dr_regs->portsc1)
+ & PORTSCX_PORT_SPEED_MASK);
+ switch (speed) {
+ case PORTSCX_PORT_SPEED_HIGH:
+ udc->gadget.speed = USB_SPEED_HIGH;
+ break;
+ case PORTSCX_PORT_SPEED_FULL:
+ udc->gadget.speed = USB_SPEED_FULL;
+ break;
+ case PORTSCX_PORT_SPEED_LOW:
+ udc->gadget.speed = USB_SPEED_LOW;
+ break;
+ default:
+ udc->gadget.speed = USB_SPEED_UNKNOWN;
+ break;
+ }
+ }
+
+ /* Update USB state */
+ if (!udc->resume_state)
+ udc->usb_state = USB_STATE_DEFAULT;
+}
+
+/* Process suspend interrupt */
+static void suspend_irq(struct fsl_udc *udc)
+{
+ udc->resume_state = udc->usb_state;
+ udc->usb_state = USB_STATE_SUSPENDED;
+
+ /* report suspend to the driver, serial.c does not support this */
+ if (udc->driver->suspend)
+ udc->driver->suspend(&udc->gadget);
+}
+
+static void bus_resume(struct fsl_udc *udc)
+{
+ udc->usb_state = udc->resume_state;
+ udc->resume_state = 0;
+
+ /* report resume to the driver, serial.c does not support this */
+ if (udc->driver->resume)
+ udc->driver->resume(&udc->gadget);
+}
+
+/* Clear up all ep queues */
+static int reset_queues(struct fsl_udc *udc)
+{
+ u8 pipe;
+
+ for (pipe = 0; pipe < udc->max_pipes; pipe++)
+ udc_reset_ep_queue(udc, pipe);
+
+ /* report disconnect; the driver is already quiesced */
+ udc->driver->disconnect(&udc->gadget);
+
+ return 0;
+}
+
+/* Process reset interrupt */
+static void reset_irq(struct fsl_udc *udc)
+{
+ u32 temp;
+ unsigned long timeout;
+
+ /* Clear the device address */
+ temp = fsl_readl(&dr_regs->deviceaddr);
+ fsl_writel(temp & ~USB_DEVICE_ADDRESS_MASK, &dr_regs->deviceaddr);
+
+ udc->device_address = 0;
+
+ /* Clear usb state */
+ udc->resume_state = 0;
+ udc->ep0_dir = 0;
+ udc->ep0_state = WAIT_FOR_SETUP;
+ udc->remote_wakeup = 0; /* default to 0 on reset */
+ udc->gadget.b_hnp_enable = 0;
+ udc->gadget.a_hnp_support = 0;
+ udc->gadget.a_alt_hnp_support = 0;
+
+ /* Clear all the setup token semaphores */
+ temp = fsl_readl(&dr_regs->endptsetupstat);
+ fsl_writel(temp, &dr_regs->endptsetupstat);
+
+ /* Clear all the endpoint complete status bits */
+ temp = fsl_readl(&dr_regs->endptcomplete);
+ fsl_writel(temp, &dr_regs->endptcomplete);
+
+ timeout = jiffies + 100;
+ while (fsl_readl(&dr_regs->endpointprime)) {
+ /* Wait until all endptprime bits cleared */
+ if (time_after(jiffies, timeout)) {
+ ERR("Timeout for reset\n");
+ break;
+ }
+ cpu_relax();
+ }
+
+ /* Write 1s to the flush register */
+ fsl_writel(0xffffffff, &dr_regs->endptflush);
+
+ if (fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_RESET) {
+ VDBG("Bus reset");
+ /* Bus is reseting */
+ udc->bus_reset = 1;
+ /* Reset all the queues, include XD, dTD, EP queue
+ * head and TR Queue */
+ reset_queues(udc);
+ udc->usb_state = USB_STATE_DEFAULT;
+ } else {
+ VDBG("Controller reset");
+ /* initialize usb hw reg except for regs for EP, not
+ * touch usbintr reg */
+ dr_controller_setup(udc);
+
+ /* Reset all internal used Queues */
+ reset_queues(udc);
+
+ ep0_setup(udc);
+
+ /* Enable DR IRQ reg, Set Run bit, change udc state */
+ dr_controller_run(udc);
+ udc->usb_state = USB_STATE_ATTACHED;
+ }
+}
+
+/*
+ * USB device controller interrupt handler
+ */
+static irqreturn_t fsl_udc_irq(int irq, void *_udc)
+{
+ struct fsl_udc *udc = _udc;
+ u32 irq_src;
+ irqreturn_t status = IRQ_NONE;
+ unsigned long flags;
+
+ /* Disable ISR for OTG host mode */
+ if (udc->stopped)
+ return IRQ_NONE;
+ spin_lock_irqsave(&udc->lock, flags);
+ irq_src = fsl_readl(&dr_regs->usbsts) & fsl_readl(&dr_regs->usbintr);
+ /* Clear notification bits */
+ fsl_writel(irq_src, &dr_regs->usbsts);
+
+ /* VDBG("irq_src [0x%8x]", irq_src); */
+
+ /* Need to resume? */
+ if (udc->usb_state == USB_STATE_SUSPENDED)
+ if ((fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_SUSPEND) == 0)
+ bus_resume(udc);
+
+ /* USB Interrupt */
+ if (irq_src & USB_STS_INT) {
+ VDBG("Packet int");
+ /* Setup package, we only support ep0 as control ep */
+ if (fsl_readl(&dr_regs->endptsetupstat) & EP_SETUP_STATUS_EP0) {
+ tripwire_handler(udc, 0,
+ (u8 *) (&udc->local_setup_buff));
+ setup_received_irq(udc, &udc->local_setup_buff);
+ status = IRQ_HANDLED;
+ }
+
+ /* completion of dtd */
+ if (fsl_readl(&dr_regs->endptcomplete)) {
+ dtd_complete_irq(udc);
+ status = IRQ_HANDLED;
+ }
+ }
+
+ /* SOF (for ISO transfer) */
+ if (irq_src & USB_STS_SOF) {
+ status = IRQ_HANDLED;
+ }
+
+ /* Port Change */
+ if (irq_src & USB_STS_PORT_CHANGE) {
+ port_change_irq(udc);
+ status = IRQ_HANDLED;
+ }
+
+ /* Reset Received */
+ if (irq_src & USB_STS_RESET) {
+ reset_irq(udc);
+ status = IRQ_HANDLED;
+ }
+
+ /* Sleep Enable (Suspend) */
+ if (irq_src & USB_STS_SUSPEND) {
+ suspend_irq(udc);
+ status = IRQ_HANDLED;
+ }
+
+ if (irq_src & (USB_STS_ERR | USB_STS_SYS_ERR)) {
+ VDBG("Error IRQ %x ", irq_src);
+ }
+
+ spin_unlock_irqrestore(&udc->lock, flags);
+ return status;
+}
+
+/*----------------------------------------------------------------*
+ * Hook to gadget drivers
+ * Called by initialization code of gadget drivers
+*----------------------------------------------------------------*/
+int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+{
+ int retval = -ENODEV;
+ unsigned long flags = 0;
+
+ if (!udc_controller)
+ return -ENODEV;
+
+ if (!driver || (driver->speed != USB_SPEED_FULL
+ && driver->speed != USB_SPEED_HIGH)
+ || !driver->bind || !driver->disconnect
+ || !driver->setup)
+ return -EINVAL;
+
+ if (udc_controller->driver)
+ return -EBUSY;
+
+ /* lock is needed but whether should use this lock or another */
+ spin_lock_irqsave(&udc_controller->lock, flags);
+
+ driver->driver.bus = 0;
+ /* hook up the driver */
+ udc_controller->driver = driver;
+ udc_controller->gadget.dev.driver = &driver->driver;
+ spin_unlock_irqrestore(&udc_controller->lock, flags);
+
+ /* bind udc driver to gadget driver */
+ retval = driver->bind(&udc_controller->gadget);
+ if (retval) {
+ VDBG("bind to %s --> %d", driver->driver.name, retval);
+ udc_controller->gadget.dev.driver = 0;
+ udc_controller->driver = 0;
+ goto out;
+ }
+
+ /* Enable DR IRQ reg and Set usbcmd reg Run bit */
+ dr_controller_run(udc_controller);
+ udc_controller->usb_state = USB_STATE_ATTACHED;
+ udc_controller->ep0_state = WAIT_FOR_SETUP;
+ udc_controller->ep0_dir = 0;
+ printk(KERN_INFO "%s: bind to driver %s \n",
+ udc_controller->gadget.name, driver->driver.name);
+
+out:
+ if (retval)
+ printk("retval %d \n", retval);
+ return retval;
+}
+EXPORT_SYMBOL(usb_gadget_register_driver);
+
+/* Disconnect from gadget driver */
+int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+{
+ struct fsl_ep *loop_ep;
+ unsigned long flags;
+
+ if (!udc_controller)
+ return -ENODEV;
+
+ if (!driver || driver != udc_controller->driver || !driver->unbind)
+ return -EINVAL;
+
+#ifdef CONFIG_USB_OTG
+ if (udc_controller->transceiver)
+ (void)otg_set_peripheral(udc_controller->transceiver, 0);
+#endif
+
+ /* stop DR, disable intr */
+ dr_controller_stop(udc_controller);
+
+ /* in fact, no needed */
+ udc_controller->usb_state = USB_STATE_ATTACHED;
+ udc_controller->ep0_state = WAIT_FOR_SETUP;
+ udc_controller->ep0_dir = 0;
+
+ /* stand operation */
+ spin_lock_irqsave(&udc_controller->lock, flags);
+ udc_controller->gadget.speed = USB_SPEED_UNKNOWN;
+ nuke(&udc_controller->eps[0], -ESHUTDOWN);
+ list_for_each_entry(loop_ep, &udc_controller->gadget.ep_list,
+ ep.ep_list)
+ nuke(loop_ep, -ESHUTDOWN);
+ spin_unlock_irqrestore(&udc_controller->lock, flags);
+
+ /* unbind gadget and unhook driver. */
+ driver->unbind(&udc_controller->gadget);
+ udc_controller->gadget.dev.driver = 0;
+ udc_controller->driver = 0;
+
+ printk("unregistered gadget driver '%s'\r\n", driver->driver.name);
+ return 0;
+}
+EXPORT_SYMBOL(usb_gadget_unregister_driver);
+
+/*-------------------------------------------------------------------------
+ PROC File System Support
+-------------------------------------------------------------------------*/
+#ifdef CONFIG_USB_GADGET_DEBUG_FILES
+
+#include <linux/seq_file.h>
+
+static const char proc_filename[] = "driver/fsl_usb2_udc";
+
+static int fsl_proc_read(char *page, char **start, off_t off, int count,
+ int *eof, void *_dev)
+{
+ char *buf = page;
+ char *next = buf;
+ unsigned size = count;
+ unsigned long flags;
+ int t, i;
+ u32 tmp_reg;
+ struct fsl_ep *ep = NULL;
+ struct fsl_req *req;
+
+ struct fsl_udc *udc = udc_controller;
+ if (off != 0)
+ return 0;
+
+ spin_lock_irqsave(&udc->lock, flags);
+
+ /* ------basic driver infomation ---- */
+ t = scnprintf(next, size,
+ DRIVER_DESC "\n"
+ "%s version: %s\n"
+ "Gadget driver: %s\n\n",
+ driver_name, DRIVER_VERSION,
+ udc->driver ? udc->driver->driver.name : "(none)");
+ size -= t;
+ next += t;
+
+ /* ------ DR Registers ----- */
+ tmp_reg = fsl_readl(&dr_regs->usbcmd);
+ t = scnprintf(next, size,
+ "USBCMD reg:\n"
+ "SetupTW: %d\n"
+ "Run/Stop: %s\n\n",
+ (tmp_reg & USB_CMD_SUTW) ? 1 : 0,
+ (tmp_reg & USB_CMD_RUN_STOP) ? "Run" : "Stop");
+ size -= t;
+ next += t;
+
+ tmp_reg = fsl_readl(&dr_regs->usbsts);
+ t = scnprintf(next, size,
+ "USB Status Reg:\n"
+ "Dr Suspend: %d" "Reset Received: %d" "System Error: %s"
+ "USB Error Interrupt: %s\n\n",
+ (tmp_reg & USB_STS_SUSPEND) ? 1 : 0,
+ (tmp_reg & USB_STS_RESET) ? 1 : 0,
+ (tmp_reg & USB_STS_SYS_ERR) ? "Err" : "Normal",
+ (tmp_reg & USB_STS_ERR) ? "Err detected" : "No err");
+ size -= t;
+ next += t;
+
+ tmp_reg = fsl_readl(&dr_regs->usbintr);
+ t = scnprintf(next, size,
+ "USB Intrrupt Enable Reg:\n"
+ "Sleep Enable: %d" "SOF Received Enable: %d"
+ "Reset Enable: %d\n"
+ "System Error Enable: %d"
+ "Port Change Dectected Enable: %d\n"
+ "USB Error Intr Enable: %d" "USB Intr Enable: %d\n\n",
+ (tmp_reg & USB_INTR_DEVICE_SUSPEND) ? 1 : 0,
+ (tmp_reg & USB_INTR_SOF_EN) ? 1 : 0,
+ (tmp_reg & USB_INTR_RESET_EN) ? 1 : 0,
+ (tmp_reg & USB_INTR_SYS_ERR_EN) ? 1 : 0,
+ (tmp_reg & USB_INTR_PTC_DETECT_EN) ? 1 : 0,
+ (tmp_reg & USB_INTR_ERR_INT_EN) ? 1 : 0,
+ (tmp_reg & USB_INTR_INT_EN) ? 1 : 0);
+ size -= t;
+ next += t;
+
+ tmp_reg = fsl_readl(&dr_regs->frindex);
+ t = scnprintf(next, size,
+ "USB Frame Index Reg:" "Frame Number is 0x%x\n\n",
+ (tmp_reg & USB_FRINDEX_MASKS));
+ size -= t;
+ next += t;
+
+ tmp_reg = fsl_readl(&dr_regs->deviceaddr);
+ t = scnprintf(next, size,
+ "USB Device Address Reg:" "Device Addr is 0x%x\n\n",
+ (tmp_reg & USB_DEVICE_ADDRESS_MASK));
+ size -= t;
+ next += t;
+
+ tmp_reg = fsl_readl(&dr_regs->endpointlistaddr);
+ t = scnprintf(next, size,
+ "USB Endpoint List Address Reg:"
+ "Device Addr is 0x%x\n\n",
+ (tmp_reg & USB_EP_LIST_ADDRESS_MASK));
+ size -= t;
+ next += t;
+
+ tmp_reg = fsl_readl(&dr_regs->portsc1);
+ t = scnprintf(next, size,
+ "USB Port Status&Control Reg:\n"
+ "Port Transceiver Type : %s" "Port Speed: %s \n"
+ "PHY Low Power Suspend: %s" "Port Reset: %s"
+ "Port Suspend Mode: %s \n" "Over-current Change: %s"
+ "Port Enable/Disable Change: %s\n"
+ "Port Enabled/Disabled: %s"
+ "Current Connect Status: %s\n\n", ( {
+ char *s;
+ switch (tmp_reg & PORTSCX_PTS_FSLS) {
+ case PORTSCX_PTS_UTMI:
+ s = "UTMI"; break;
+ case PORTSCX_PTS_ULPI:
+ s = "ULPI "; break;
+ case PORTSCX_PTS_FSLS:
+ s = "FS/LS Serial"; break;
+ default:
+ s = "None"; break;
+ }
+ s;} ), ( {
+ char *s;
+ switch (tmp_reg & PORTSCX_PORT_SPEED_UNDEF) {
+ case PORTSCX_PORT_SPEED_FULL:
+ s = "Full Speed"; break;
+ case PORTSCX_PORT_SPEED_LOW:
+ s = "Low Speed"; break;
+ case PORTSCX_PORT_SPEED_HIGH:
+ s = "High Speed"; break;
+ default:
+ s = "Undefined"; break;
+ }
+ s;
+ } ),
+ (tmp_reg & PORTSCX_PHY_LOW_POWER_SPD) ?
+ "Normal PHY mode" : "Low power mode",
+ (tmp_reg & PORTSCX_PORT_RESET) ? "In Reset" :
+ "Not in Reset",
+ (tmp_reg & PORTSCX_PORT_SUSPEND) ? "In " : "Not in",
+ (tmp_reg & PORTSCX_OVER_CURRENT_CHG) ? "Dected" :
+ "No",
+ (tmp_reg & PORTSCX_PORT_EN_DIS_CHANGE) ? "Disable" :
+ "Not change",
+ (tmp_reg & PORTSCX_PORT_ENABLE) ? "Enable" :
+ "Not correct",
+ (tmp_reg & PORTSCX_CURRENT_CONNECT_STATUS) ?
+ "Attached" : "Not-Att");
+ size -= t;
+ next += t;
+
+ tmp_reg = fsl_readl(&dr_regs->usbmode);
+ t = scnprintf(next, size,
+ "USB Mode Reg:" "Controller Mode is : %s\n\n", ( {
+ char *s;
+ switch (tmp_reg & USB_MODE_CTRL_MODE_HOST) {
+ case USB_MODE_CTRL_MODE_IDLE:
+ s = "Idle"; break;
+ case USB_MODE_CTRL_MODE_DEVICE:
+ s = "Device Controller"; break;
+ case USB_MODE_CTRL_MODE_HOST:
+ s = "Host Controller"; break;
+ default:
+ s = "None"; break;
+ }
+ s;
+ } ));
+ size -= t;
+ next += t;
+
+ tmp_reg = fsl_readl(&dr_regs->endptsetupstat);
+ t = scnprintf(next, size,
+ "Endpoint Setup Status Reg:" "SETUP on ep 0x%x\n\n",
+ (tmp_reg & EP_SETUP_STATUS_MASK));
+ size -= t;
+ next += t;
+
+ for (i = 0; i < udc->max_ep / 2; i++) {
+ tmp_reg = fsl_readl(&dr_regs->endptctrl[i]);
+ t = scnprintf(next, size, "EP Ctrl Reg [0x%x]: = [0x%x]\n",
+ i, tmp_reg);
+ size -= t;
+ next += t;
+ }
+ tmp_reg = fsl_readl(&dr_regs->endpointprime);
+ t = scnprintf(next, size, "EP Prime Reg = [0x%x]\n", tmp_reg);
+ size -= t;
+ next += t;
+
+ tmp_reg = usb_sys_regs->snoop1;
+ t = scnprintf(next, size, "\nSnoop1 Reg : = [0x%x]\n\n", tmp_reg);
+ size -= t;
+ next += t;
+
+ tmp_reg = usb_sys_regs->control;
+ t = scnprintf(next, size, "General Control Reg : = [0x%x]\n\n",
+ tmp_reg);
+ size -= t;
+ next += t;
+
+ /* ------fsl_udc, fsl_ep, fsl_request structure information ----- */
+ ep = &udc->eps[0];
+ t = scnprintf(next, size, "For %s Maxpkt is 0x%x index is 0x%x\n",
+ ep->ep.name, ep_maxpacket(ep), ep_index(ep));
+ size -= t;
+ next += t;
+
+ if (list_empty(&ep->queue)) {
+ t = scnprintf(next, size, "its req queue is empty\n\n");
+ size -= t;
+ next += t;
+ } else {
+ list_for_each_entry(req, &ep->queue, queue) {
+ t = scnprintf(next, size,
+ "req %p actual 0x%x length 0x%x buf %p\n",
+ &req->req, req->req.actual,
+ req->req.length, req->req.buf);
+ size -= t;
+ next += t;
+ }
+ }
+ /* other gadget->eplist ep */
+ list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) {
+ if (ep->desc) {
+ t = scnprintf(next, size,
+ "\nFor %s Maxpkt is 0x%x "
+ "index is 0x%x\n",
+ ep->ep.name, ep_maxpacket(ep),
+ ep_index(ep));
+ size -= t;
+ next += t;
+
+ if (list_empty(&ep->queue)) {
+ t = scnprintf(next, size,
+ "its req queue is empty\n\n");
+ size -= t;
+ next += t;
+ } else {
+ list_for_each_entry(req, &ep->queue, queue) {
+ t = scnprintf(next, size,
+ "req %p actual 0x%x length"
+ "0x%x buf %p\n",
+ &req->req, req->req.actual,
+ req->req.length, req->req.buf);
+ size -= t;
+ next += t;
+ } /* end for each_entry of ep req */
+ } /* end for else */
+ } /* end for if(ep->queue) */
+ } /* end (ep->desc) */
+
+ spin_unlock_irqrestore(&udc->lock, flags);
+
+ *eof = 1;
+ return count - size;
+}
+
+#define create_proc_file() create_proc_read_entry(proc_filename, \
+ 0, NULL, fsl_proc_read, NULL)
+
+#define remove_proc_file() remove_proc_entry(proc_filename, NULL)
+
+#else /* !CONFIG_USB_GADGET_DEBUG_FILES */
+
+#define create_proc_file() do {} while (0)
+#define remove_proc_file() do {} while (0)
+
+#endif /* CONFIG_USB_GADGET_DEBUG_FILES */
+
+/*-------------------------------------------------------------------------*/
+
+/* Release udc structures */
+static void fsl_udc_release(struct device *dev)
+{
+ complete(udc_controller->done);
+ dma_free_coherent(dev, udc_controller->ep_qh_size,
+ udc_controller->ep_qh, udc_controller->ep_qh_dma);
+ kfree(udc_controller);
+}
+
+/******************************************************************
+ Internal structure setup functions
+*******************************************************************/
+/*------------------------------------------------------------------
+ * init resource for globle controller
+ * Return the udc handle on success or NULL on failure
+ ------------------------------------------------------------------*/
+static struct fsl_udc *__init struct_udc_setup(struct platform_device *pdev)
+{
+ struct fsl_udc *udc;
+ struct fsl_usb2_platform_data *pdata;
+ size_t size;
+
+ udc = kzalloc(sizeof(struct fsl_udc), GFP_KERNEL);
+ if (udc == NULL) {
+ ERR("malloc udc failed\n");
+ return NULL;
+ }
+
+ pdata = pdev->dev.platform_data;
+ udc->phy_mode = pdata->phy_mode;
+ /* max_ep_nr is bidirectional ep number, max_ep doubles the number */
+ udc->max_ep = pdata->max_ep_nr * 2;
+
+ udc->eps = kzalloc(sizeof(struct fsl_ep) * udc->max_ep, GFP_KERNEL);
+ if (!udc->eps) {
+ ERR("malloc fsl_ep failed\n");
+ goto cleanup;
+ }
+
+ /* initialized QHs, take care of alignment */
+ size = udc->max_ep * sizeof(struct ep_queue_head);
+ if (size < QH_ALIGNMENT)
+ size = QH_ALIGNMENT;
+ else if ((size % QH_ALIGNMENT) != 0) {
+ size += QH_ALIGNMENT + 1;
+ size &= ~(QH_ALIGNMENT - 1);
+ }
+ udc->ep_qh = dma_alloc_coherent(&pdev->dev, size,
+ &udc->ep_qh_dma, GFP_KERNEL);
+ if (!udc->ep_qh) {
+ ERR("malloc QHs for udc failed\n");
+ kfree(udc->eps);
+ goto cleanup;
+ }
+
+ udc->ep_qh_size = size;
+
+ /* Initialize ep0 status request structure */
+ /* FIXME: fsl_alloc_request() ignores ep argument */
+ udc->status_req = container_of(fsl_alloc_request(NULL, GFP_KERNEL),
+ struct fsl_req, req);
+ /* allocate a small amount of memory to get valid address */
+ udc->status_req->req.buf = kmalloc(8, GFP_KERNEL);
+ udc->status_req->req.dma = virt_to_phys(udc->status_req->req.buf);
+
+ udc->resume_state = USB_STATE_NOTATTACHED;
+ udc->usb_state = USB_STATE_POWERED;
+ udc->ep0_dir = 0;
+ udc->remote_wakeup = 0; /* default to 0 on reset */
+ spin_lock_init(&udc->lock);
+
+ return udc;
+
+cleanup:
+ kfree(udc);
+ return NULL;
+}
+
+/*----------------------------------------------------------------
+ * Setup the fsl_ep struct for eps
+ * Link fsl_ep->ep to gadget->ep_list
+ * ep0out is not used so do nothing here
+ * ep0in should be taken care
+ *--------------------------------------------------------------*/
+static int __init struct_ep_setup(struct fsl_udc *udc, unsigned char index,
+ char *name, int link)
+{
+ struct fsl_ep *ep = &udc->eps[index];
+
+ ep->udc = udc;
+ strcpy(ep->name, name);
+ ep->ep.name = ep->name;
+
+ ep->ep.ops = &fsl_ep_ops;
+ ep->stopped = 0;
+
+ /* for ep0: maxP defined in desc
+ * for other eps, maxP is set by epautoconfig() called by gadget layer
+ */
+ ep->ep.maxpacket = (unsigned short) ~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 (link)
+ list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list);
+ ep->gadget = &udc->gadget;
+ ep->qh = &udc->ep_qh[index];
+
+ return 0;
+}
+
+/* Driver probe function
+ * all intialize operations implemented here except enabling usb_intr reg
+ */
+static int __init fsl_udc_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ int ret = -ENODEV;
+ unsigned int i;
+
+ if (strcmp(pdev->name, driver_name)) {
+ VDBG("Wrong device\n");
+ return -ENODEV;
+ }
+
+ /* board setup should have been done in the platform code */
+
+ /* Initialize the udc structure including QH member and other member */
+ udc_controller = struct_udc_setup(pdev);
+ if (!udc_controller) {
+ VDBG("udc_controller is NULL \n");
+ return -ENOMEM;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENXIO;
+
+ if (!request_mem_region(res->start, res->end - res->start + 1,
+ driver_name)) {
+ ERR("request mem region for %s failed \n", pdev->name);
+ return -EBUSY;
+ }
+
+ dr_regs = ioremap(res->start, res->end - res->start + 1);
+ if (!dr_regs) {
+ ret = -ENOMEM;
+ goto err1;
+ }
+
+ usb_sys_regs = (struct usb_sys_interface *)
+ ((u32)dr_regs + USB_DR_SYS_OFFSET);
+
+ udc_controller->irq = platform_get_irq(pdev, 0);
+ if (!udc_controller->irq) {
+ ret = -ENODEV;
+ goto err2;
+ }
+
+ ret = request_irq(udc_controller->irq, fsl_udc_irq, SA_SHIRQ,
+ driver_name, udc_controller);
+ if (ret != 0) {
+ ERR("cannot request irq %d err %d \n",
+ udc_controller->irq, ret);
+ goto err2;
+ }
+
+ /* initialize usb hw reg except for regs for EP,
+ * leave usbintr reg untouched */
+ dr_controller_setup(udc_controller);
+
+ /* Setup gadget structure */
+ udc_controller->gadget.ops = &fsl_gadget_ops;
+ udc_controller->gadget.is_dualspeed = 1;
+ udc_controller->gadget.ep0 = &udc_controller->eps[0].ep;
+ INIT_LIST_HEAD(&udc_controller->gadget.ep_list);
+ udc_controller->gadget.speed = USB_SPEED_UNKNOWN;
+ udc_controller->gadget.name = driver_name;
+
+ /* Setup gadget.dev and register with kernel */
+ strcpy(udc_controller->gadget.dev.bus_id, "gadget");
+ udc_controller->gadget.dev.release = fsl_udc_release;
+ udc_controller->gadget.dev.parent = &pdev->dev;
+ ret = device_register(&udc_controller->gadget.dev);
+ if (ret < 0)
+ goto err3;
+
+ /* setup QH and epctrl for ep0 */
+ ep0_setup(udc_controller);
+
+ /* setup udc->eps[] for ep0 */
+ struct_ep_setup(udc_controller, 0, "ep0", 0);
+ /* for ep0: the desc defined here;
+ * for other eps, gadget layer called ep_enable with defined desc
+ */
+ udc_controller->eps[0].desc = &fsl_ep0_desc;
+ udc_controller->eps[0].ep.maxpacket = USB_MAX_CTRL_PAYLOAD;
+
+ /* setup the udc->eps[] for non-control endpoints and link
+ * to gadget.ep_list */
+ for (i = 1; i < (int)(udc_controller->max_ep / 2); i++) {
+ char name[14];
+
+ sprintf(name, "ep%dout", i);
+ struct_ep_setup(udc_controller, i * 2, name, 1);
+ sprintf(name, "ep%din", i);
+ struct_ep_setup(udc_controller, i * 2 + 1, name, 1);
+ }
+
+ /* use dma_pool for TD management */
+ udc_controller->td_pool = dma_pool_create("udc_td", &pdev->dev,
+ sizeof(struct ep_td_struct),
+ DTD_ALIGNMENT, UDC_DMA_BOUNDARY);
+ if (udc_controller->td_pool == NULL) {
+ ret = -ENOMEM;
+ goto err4;
+ }
+ create_proc_file();
+ return 0;
+
+err4:
+ device_unregister(&udc_controller->gadget.dev);
+err3:
+ free_irq(udc_controller->irq, udc_controller);
+err2:
+ iounmap(dr_regs);
+err1:
+ release_mem_region(res->start, res->end - res->start + 1);
+ return ret;
+}
+
+/* Driver removal function
+ * Free resources and finish pending transactions
+ */
+static int __exit fsl_udc_remove(struct platform_device *pdev)
+{
+ struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+ DECLARE_COMPLETION(done);
+
+ if (!udc_controller)
+ return -ENODEV;
+ udc_controller->done = &done;
+
+ /* DR has been stopped in usb_gadget_unregister_driver() */
+ remove_proc_file();
+
+ /* Free allocated memory */
+ kfree(udc_controller->status_req->req.buf);
+ kfree(udc_controller->status_req);
+ kfree(udc_controller->eps);
+
+ dma_pool_destroy(udc_controller->td_pool);
+ free_irq(udc_controller->irq, udc_controller);
+ iounmap(dr_regs);
+ release_mem_region(res->start, res->end - res->start + 1);
+
+ device_unregister(&udc_controller->gadget.dev);
+ /* free udc --wait for the release() finished */
+ wait_for_completion(&done);
+
+ return 0;
+}
+
+/*-----------------------------------------------------------------
+ * Modify Power management attributes
+ * Used by OTG statemachine to disable gadget temporarily
+ -----------------------------------------------------------------*/
+static int fsl_udc_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ dr_controller_stop(udc_controller);
+ return 0;
+}
+
+/*-----------------------------------------------------------------
+ * Invoked on USB resume. May be called in_interrupt.
+ * Here we start the DR controller and enable the irq
+ *-----------------------------------------------------------------*/
+static int fsl_udc_resume(struct platform_device *pdev)
+{
+ /* Enable DR irq reg and set controller Run */
+ if (udc_controller->stopped) {
+ dr_controller_setup(udc_controller);
+ dr_controller_run(udc_controller);
+ }
+ udc_controller->usb_state = USB_STATE_ATTACHED;
+ udc_controller->ep0_state = WAIT_FOR_SETUP;
+ udc_controller->ep0_dir = 0;
+ return 0;
+}
+
+/*-------------------------------------------------------------------------
+ Register entry point for the peripheral controller driver
+--------------------------------------------------------------------------*/
+
+static struct platform_driver udc_driver = {
+ .remove = __exit_p(fsl_udc_remove),
+ /* these suspend and resume are not usb suspend and resume */
+ .suspend = fsl_udc_suspend,
+ .resume = fsl_udc_resume,
+ .driver = {
+ .name = (char *)driver_name,
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init udc_init(void)
+{
+ printk(KERN_INFO "%s (%s)\n", driver_desc, DRIVER_VERSION);
+ return platform_driver_probe(&udc_driver, fsl_udc_probe);
+}
+
+module_init(udc_init);
+
+static void __exit udc_exit(void)
+{
+ platform_driver_unregister(&udc_driver);
+ printk("%s unregistered \n", driver_desc);
+}
+
+module_exit(udc_exit);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * Freescale USB device/endpoint management registers
+ */
+#ifndef __FSL_USB2_UDC_H
+#define __FSL_USB2_UDC_H
+
+/* ### define USB registers here
+ */
+#define USB_MAX_CTRL_PAYLOAD 64
+#define USB_DR_SYS_OFFSET 0x400
+
+ /* USB DR device mode registers (Little Endian) */
+struct usb_dr_device {
+ /* Capability register */
+ u8 res1[256];
+ u16 caplength; /* Capability Register Length */
+ u16 hciversion; /* Host Controller Interface Version */
+ u32 hcsparams; /* Host Controller Structual Parameters */
+ u32 hccparams; /* Host Controller Capability Parameters */
+ u8 res2[20];
+ u32 dciversion; /* Device Controller Interface Version */
+ u32 dccparams; /* Device Controller Capability Parameters */
+ u8 res3[24];
+ /* Operation register */
+ u32 usbcmd; /* USB Command Register */
+ u32 usbsts; /* USB Status Register */
+ u32 usbintr; /* USB Interrupt Enable Register */
+ u32 frindex; /* Frame Index Register */
+ u8 res4[4];
+ u32 deviceaddr; /* Device Address */
+ u32 endpointlistaddr; /* Endpoint List Address Register */
+ u8 res5[4];
+ u32 burstsize; /* Master Interface Data Burst Size Register */
+ u32 txttfilltuning; /* Transmit FIFO Tuning Controls Register */
+ u8 res6[24];
+ u32 configflag; /* Configure Flag Register */
+ u32 portsc1; /* Port 1 Status and Control Register */
+ u8 res7[28];
+ u32 otgsc; /* On-The-Go Status and Control */
+ u32 usbmode; /* USB Mode Register */
+ u32 endptsetupstat; /* Endpoint Setup Status Register */
+ u32 endpointprime; /* Endpoint Initialization Register */
+ u32 endptflush; /* Endpoint Flush Register */
+ u32 endptstatus; /* Endpoint Status Register */
+ u32 endptcomplete; /* Endpoint Complete Register */
+ u32 endptctrl[6]; /* Endpoint Control Registers */
+};
+
+ /* USB DR host mode registers (Little Endian) */
+struct usb_dr_host {
+ /* Capability register */
+ u8 res1[256];
+ u16 caplength; /* Capability Register Length */
+ u16 hciversion; /* Host Controller Interface Version */
+ u32 hcsparams; /* Host Controller Structual Parameters */
+ u32 hccparams; /* Host Controller Capability Parameters */
+ u8 res2[20];
+ u32 dciversion; /* Device Controller Interface Version */
+ u32 dccparams; /* Device Controller Capability Parameters */
+ u8 res3[24];
+ /* Operation register */
+ u32 usbcmd; /* USB Command Register */
+ u32 usbsts; /* USB Status Register */
+ u32 usbintr; /* USB Interrupt Enable Register */
+ u32 frindex; /* Frame Index Register */
+ u8 res4[4];
+ u32 periodiclistbase; /* Periodic Frame List Base Address Register */
+ u32 asynclistaddr; /* Current Asynchronous List Address Register */
+ u8 res5[4];
+ u32 burstsize; /* Master Interface Data Burst Size Register */
+ u32 txttfilltuning; /* Transmit FIFO Tuning Controls Register */
+ u8 res6[24];
+ u32 configflag; /* Configure Flag Register */
+ u32 portsc1; /* Port 1 Status and Control Register */
+ u8 res7[28];
+ u32 otgsc; /* On-The-Go Status and Control */
+ u32 usbmode; /* USB Mode Register */
+ u32 endptsetupstat; /* Endpoint Setup Status Register */
+ u32 endpointprime; /* Endpoint Initialization Register */
+ u32 endptflush; /* Endpoint Flush Register */
+ u32 endptstatus; /* Endpoint Status Register */
+ u32 endptcomplete; /* Endpoint Complete Register */
+ u32 endptctrl[6]; /* Endpoint Control Registers */
+};
+
+ /* non-EHCI USB system interface registers (Big Endian) */
+struct usb_sys_interface {
+ u32 snoop1;
+ u32 snoop2;
+ u32 age_cnt_thresh; /* Age Count Threshold Register */
+ u32 pri_ctrl; /* Priority Control Register */
+ u32 si_ctrl; /* System Interface Control Register */
+ u8 res[236];
+ u32 control; /* General Purpose Control Register */
+};
+
+/* ep0 transfer state */
+#define WAIT_FOR_SETUP 0
+#define DATA_STATE_XMIT 1
+#define DATA_STATE_NEED_ZLP 2
+#define WAIT_FOR_OUT_STATUS 3
+#define DATA_STATE_RECV 4
+
+/* Frame Index Register Bit Masks */
+#define USB_FRINDEX_MASKS 0x3fff
+/* USB CMD Register Bit Masks */
+#define USB_CMD_RUN_STOP 0x00000001
+#define USB_CMD_CTRL_RESET 0x00000002
+#define USB_CMD_PERIODIC_SCHEDULE_EN 0x00000010
+#define USB_CMD_ASYNC_SCHEDULE_EN 0x00000020
+#define USB_CMD_INT_AA_DOORBELL 0x00000040
+#define USB_CMD_ASP 0x00000300
+#define USB_CMD_ASYNC_SCH_PARK_EN 0x00000800
+#define USB_CMD_SUTW 0x00002000
+#define USB_CMD_ATDTW 0x00004000
+#define USB_CMD_ITC 0x00FF0000
+
+/* bit 15,3,2 are frame list size */
+#define USB_CMD_FRAME_SIZE_1024 0x00000000
+#define USB_CMD_FRAME_SIZE_512 0x00000004
+#define USB_CMD_FRAME_SIZE_256 0x00000008
+#define USB_CMD_FRAME_SIZE_128 0x0000000C
+#define USB_CMD_FRAME_SIZE_64 0x00008000
+#define USB_CMD_FRAME_SIZE_32 0x00008004
+#define USB_CMD_FRAME_SIZE_16 0x00008008
+#define USB_CMD_FRAME_SIZE_8 0x0000800C
+
+/* bit 9-8 are async schedule park mode count */
+#define USB_CMD_ASP_00 0x00000000
+#define USB_CMD_ASP_01 0x00000100
+#define USB_CMD_ASP_10 0x00000200
+#define USB_CMD_ASP_11 0x00000300
+#define USB_CMD_ASP_BIT_POS 8
+
+/* bit 23-16 are interrupt threshold control */
+#define USB_CMD_ITC_NO_THRESHOLD 0x00000000
+#define USB_CMD_ITC_1_MICRO_FRM 0x00010000
+#define USB_CMD_ITC_2_MICRO_FRM 0x00020000
+#define USB_CMD_ITC_4_MICRO_FRM 0x00040000
+#define USB_CMD_ITC_8_MICRO_FRM 0x00080000
+#define USB_CMD_ITC_16_MICRO_FRM 0x00100000
+#define USB_CMD_ITC_32_MICRO_FRM 0x00200000
+#define USB_CMD_ITC_64_MICRO_FRM 0x00400000
+#define USB_CMD_ITC_BIT_POS 16
+
+/* USB STS Register Bit Masks */
+#define USB_STS_INT 0x00000001
+#define USB_STS_ERR 0x00000002
+#define USB_STS_PORT_CHANGE 0x00000004
+#define USB_STS_FRM_LST_ROLL 0x00000008
+#define USB_STS_SYS_ERR 0x00000010
+#define USB_STS_IAA 0x00000020
+#define USB_STS_RESET 0x00000040
+#define USB_STS_SOF 0x00000080
+#define USB_STS_SUSPEND 0x00000100
+#define USB_STS_HC_HALTED 0x00001000
+#define USB_STS_RCL 0x00002000
+#define USB_STS_PERIODIC_SCHEDULE 0x00004000
+#define USB_STS_ASYNC_SCHEDULE 0x00008000
+
+/* USB INTR Register Bit Masks */
+#define USB_INTR_INT_EN 0x00000001
+#define USB_INTR_ERR_INT_EN 0x00000002
+#define USB_INTR_PTC_DETECT_EN 0x00000004
+#define USB_INTR_FRM_LST_ROLL_EN 0x00000008
+#define USB_INTR_SYS_ERR_EN 0x00000010
+#define USB_INTR_ASYN_ADV_EN 0x00000020
+#define USB_INTR_RESET_EN 0x00000040
+#define USB_INTR_SOF_EN 0x00000080
+#define USB_INTR_DEVICE_SUSPEND 0x00000100
+
+/* Device Address bit masks */
+#define USB_DEVICE_ADDRESS_MASK 0xFE000000
+#define USB_DEVICE_ADDRESS_BIT_POS 25
+
+/* endpoint list address bit masks */
+#define USB_EP_LIST_ADDRESS_MASK 0xfffff800
+
+/* PORTSCX Register Bit Masks */
+#define PORTSCX_CURRENT_CONNECT_STATUS 0x00000001
+#define PORTSCX_CONNECT_STATUS_CHANGE 0x00000002
+#define PORTSCX_PORT_ENABLE 0x00000004
+#define PORTSCX_PORT_EN_DIS_CHANGE 0x00000008
+#define PORTSCX_OVER_CURRENT_ACT 0x00000010
+#define PORTSCX_OVER_CURRENT_CHG 0x00000020
+#define PORTSCX_PORT_FORCE_RESUME 0x00000040
+#define PORTSCX_PORT_SUSPEND 0x00000080
+#define PORTSCX_PORT_RESET 0x00000100
+#define PORTSCX_LINE_STATUS_BITS 0x00000C00
+#define PORTSCX_PORT_POWER 0x00001000
+#define PORTSCX_PORT_INDICTOR_CTRL 0x0000C000
+#define PORTSCX_PORT_TEST_CTRL 0x000F0000
+#define PORTSCX_WAKE_ON_CONNECT_EN 0x00100000
+#define PORTSCX_WAKE_ON_CONNECT_DIS 0x00200000
+#define PORTSCX_WAKE_ON_OVER_CURRENT 0x00400000
+#define PORTSCX_PHY_LOW_POWER_SPD 0x00800000
+#define PORTSCX_PORT_FORCE_FULL_SPEED 0x01000000
+#define PORTSCX_PORT_SPEED_MASK 0x0C000000
+#define PORTSCX_PORT_WIDTH 0x10000000
+#define PORTSCX_PHY_TYPE_SEL 0xC0000000
+
+/* bit 11-10 are line status */
+#define PORTSCX_LINE_STATUS_SE0 0x00000000
+#define PORTSCX_LINE_STATUS_JSTATE 0x00000400
+#define PORTSCX_LINE_STATUS_KSTATE 0x00000800
+#define PORTSCX_LINE_STATUS_UNDEF 0x00000C00
+#define PORTSCX_LINE_STATUS_BIT_POS 10
+
+/* bit 15-14 are port indicator control */
+#define PORTSCX_PIC_OFF 0x00000000
+#define PORTSCX_PIC_AMBER 0x00004000
+#define PORTSCX_PIC_GREEN 0x00008000
+#define PORTSCX_PIC_UNDEF 0x0000C000
+#define PORTSCX_PIC_BIT_POS 14
+
+/* bit 19-16 are port test control */
+#define PORTSCX_PTC_DISABLE 0x00000000
+#define PORTSCX_PTC_JSTATE 0x00010000
+#define PORTSCX_PTC_KSTATE 0x00020000
+#define PORTSCX_PTC_SEQNAK 0x00030000
+#define PORTSCX_PTC_PACKET 0x00040000
+#define PORTSCX_PTC_FORCE_EN 0x00050000
+#define PORTSCX_PTC_BIT_POS 16
+
+/* bit 27-26 are port speed */
+#define PORTSCX_PORT_SPEED_FULL 0x00000000
+#define PORTSCX_PORT_SPEED_LOW 0x04000000
+#define PORTSCX_PORT_SPEED_HIGH 0x08000000
+#define PORTSCX_PORT_SPEED_UNDEF 0x0C000000
+#define PORTSCX_SPEED_BIT_POS 26
+
+/* bit 28 is parallel transceiver width for UTMI interface */
+#define PORTSCX_PTW 0x10000000
+#define PORTSCX_PTW_8BIT 0x00000000
+#define PORTSCX_PTW_16BIT 0x10000000
+
+/* bit 31-30 are port transceiver select */
+#define PORTSCX_PTS_UTMI 0x00000000
+#define PORTSCX_PTS_ULPI 0x80000000
+#define PORTSCX_PTS_FSLS 0xC0000000
+#define PORTSCX_PTS_BIT_POS 30
+
+/* otgsc Register Bit Masks */
+#define OTGSC_CTRL_VUSB_DISCHARGE 0x00000001
+#define OTGSC_CTRL_VUSB_CHARGE 0x00000002
+#define OTGSC_CTRL_OTG_TERM 0x00000008
+#define OTGSC_CTRL_DATA_PULSING 0x00000010
+#define OTGSC_STS_USB_ID 0x00000100
+#define OTGSC_STS_A_VBUS_VALID 0x00000200
+#define OTGSC_STS_A_SESSION_VALID 0x00000400
+#define OTGSC_STS_B_SESSION_VALID 0x00000800
+#define OTGSC_STS_B_SESSION_END 0x00001000
+#define OTGSC_STS_1MS_TOGGLE 0x00002000
+#define OTGSC_STS_DATA_PULSING 0x00004000
+#define OTGSC_INTSTS_USB_ID 0x00010000
+#define OTGSC_INTSTS_A_VBUS_VALID 0x00020000
+#define OTGSC_INTSTS_A_SESSION_VALID 0x00040000
+#define OTGSC_INTSTS_B_SESSION_VALID 0x00080000
+#define OTGSC_INTSTS_B_SESSION_END 0x00100000
+#define OTGSC_INTSTS_1MS 0x00200000
+#define OTGSC_INTSTS_DATA_PULSING 0x00400000
+#define OTGSC_INTR_USB_ID 0x01000000
+#define OTGSC_INTR_A_VBUS_VALID 0x02000000
+#define OTGSC_INTR_A_SESSION_VALID 0x04000000
+#define OTGSC_INTR_B_SESSION_VALID 0x08000000
+#define OTGSC_INTR_B_SESSION_END 0x10000000
+#define OTGSC_INTR_1MS_TIMER 0x20000000
+#define OTGSC_INTR_DATA_PULSING 0x40000000
+
+/* USB MODE Register Bit Masks */
+#define USB_MODE_CTRL_MODE_IDLE 0x00000000
+#define USB_MODE_CTRL_MODE_DEVICE 0x00000002
+#define USB_MODE_CTRL_MODE_HOST 0x00000003
+#define USB_MODE_CTRL_MODE_RSV 0x00000001
+#define USB_MODE_SETUP_LOCK_OFF 0x00000008
+#define USB_MODE_STREAM_DISABLE 0x00000010
+/* Endpoint Flush Register */
+#define EPFLUSH_TX_OFFSET 0x00010000
+#define EPFLUSH_RX_OFFSET 0x00000000
+
+/* Endpoint Setup Status bit masks */
+#define EP_SETUP_STATUS_MASK 0x0000003F
+#define EP_SETUP_STATUS_EP0 0x00000001
+
+/* ENDPOINTCTRLx Register Bit Masks */
+#define EPCTRL_TX_ENABLE 0x00800000
+#define EPCTRL_TX_DATA_TOGGLE_RST 0x00400000 /* Not EP0 */
+#define EPCTRL_TX_DATA_TOGGLE_INH 0x00200000 /* Not EP0 */
+#define EPCTRL_TX_TYPE 0x000C0000
+#define EPCTRL_TX_DATA_SOURCE 0x00020000 /* Not EP0 */
+#define EPCTRL_TX_EP_STALL 0x00010000
+#define EPCTRL_RX_ENABLE 0x00000080
+#define EPCTRL_RX_DATA_TOGGLE_RST 0x00000040 /* Not EP0 */
+#define EPCTRL_RX_DATA_TOGGLE_INH 0x00000020 /* Not EP0 */
+#define EPCTRL_RX_TYPE 0x0000000C
+#define EPCTRL_RX_DATA_SINK 0x00000002 /* Not EP0 */
+#define EPCTRL_RX_EP_STALL 0x00000001
+
+/* bit 19-18 and 3-2 are endpoint type */
+#define EPCTRL_EP_TYPE_CONTROL 0
+#define EPCTRL_EP_TYPE_ISO 1
+#define EPCTRL_EP_TYPE_BULK 2
+#define EPCTRL_EP_TYPE_INTERRUPT 3
+#define EPCTRL_TX_EP_TYPE_SHIFT 18
+#define EPCTRL_RX_EP_TYPE_SHIFT 2
+
+/* SNOOPn Register Bit Masks */
+#define SNOOP_ADDRESS_MASK 0xFFFFF000
+#define SNOOP_SIZE_ZERO 0x00 /* snooping disable */
+#define SNOOP_SIZE_4KB 0x0B /* 4KB snoop size */
+#define SNOOP_SIZE_8KB 0x0C
+#define SNOOP_SIZE_16KB 0x0D
+#define SNOOP_SIZE_32KB 0x0E
+#define SNOOP_SIZE_64KB 0x0F
+#define SNOOP_SIZE_128KB 0x10
+#define SNOOP_SIZE_256KB 0x11
+#define SNOOP_SIZE_512KB 0x12
+#define SNOOP_SIZE_1MB 0x13
+#define SNOOP_SIZE_2MB 0x14
+#define SNOOP_SIZE_4MB 0x15
+#define SNOOP_SIZE_8MB 0x16
+#define SNOOP_SIZE_16MB 0x17
+#define SNOOP_SIZE_32MB 0x18
+#define SNOOP_SIZE_64MB 0x19
+#define SNOOP_SIZE_128MB 0x1A
+#define SNOOP_SIZE_256MB 0x1B
+#define SNOOP_SIZE_512MB 0x1C
+#define SNOOP_SIZE_1GB 0x1D
+#define SNOOP_SIZE_2GB 0x1E /* 2GB snoop size */
+
+/* pri_ctrl Register Bit Masks */
+#define PRI_CTRL_PRI_LVL1 0x0000000C
+#define PRI_CTRL_PRI_LVL0 0x00000003
+
+/* si_ctrl Register Bit Masks */
+#define SI_CTRL_ERR_DISABLE 0x00000010
+#define SI_CTRL_IDRC_DISABLE 0x00000008
+#define SI_CTRL_RD_SAFE_EN 0x00000004
+#define SI_CTRL_RD_PREFETCH_DISABLE 0x00000002
+#define SI_CTRL_RD_PREFEFETCH_VAL 0x00000001
+
+/* control Register Bit Masks */
+#define USB_CTRL_IOENB 0x00000004
+#define USB_CTRL_ULPI_INT0EN 0x00000001
+
+/* Endpoint Queue Head data struct
+ * Rem: all the variables of qh are LittleEndian Mode
+ * and NEXT_POINTER_MASK should operate on a LittleEndian, Phy Addr
+ */
+struct ep_queue_head {
+ u32 max_pkt_length; /* Mult(31-30) , Zlt(29) , Max Pkt len
+ and IOS(15) */
+ u32 curr_dtd_ptr; /* Current dTD Pointer(31-5) */
+ u32 next_dtd_ptr; /* Next dTD Pointer(31-5), T(0) */
+ u32 size_ioc_int_sts; /* Total bytes (30-16), IOC (15),
+ MultO(11-10), STS (7-0) */
+ u32 buff_ptr0; /* Buffer pointer Page 0 (31-12) */
+ u32 buff_ptr1; /* Buffer pointer Page 1 (31-12) */
+ u32 buff_ptr2; /* Buffer pointer Page 2 (31-12) */
+ u32 buff_ptr3; /* Buffer pointer Page 3 (31-12) */
+ u32 buff_ptr4; /* Buffer pointer Page 4 (31-12) */
+ u32 res1;
+ u8 setup_buffer[8]; /* Setup data 8 bytes */
+ u32 res2[4];
+};
+
+/* Endpoint Queue Head Bit Masks */
+#define EP_QUEUE_HEAD_MULT_POS 30
+#define EP_QUEUE_HEAD_ZLT_SEL 0x20000000
+#define EP_QUEUE_HEAD_MAX_PKT_LEN_POS 16
+#define EP_QUEUE_HEAD_MAX_PKT_LEN(ep_info) (((ep_info)>>16)&0x07ff)
+#define EP_QUEUE_HEAD_IOS 0x00008000
+#define EP_QUEUE_HEAD_NEXT_TERMINATE 0x00000001
+#define EP_QUEUE_HEAD_IOC 0x00008000
+#define EP_QUEUE_HEAD_MULTO 0x00000C00
+#define EP_QUEUE_HEAD_STATUS_HALT 0x00000040
+#define EP_QUEUE_HEAD_STATUS_ACTIVE 0x00000080
+#define EP_QUEUE_CURRENT_OFFSET_MASK 0x00000FFF
+#define EP_QUEUE_HEAD_NEXT_POINTER_MASK 0xFFFFFFE0
+#define EP_QUEUE_FRINDEX_MASK 0x000007FF
+#define EP_MAX_LENGTH_TRANSFER 0x4000
+
+/* Endpoint Transfer Descriptor data struct */
+/* Rem: all the variables of td are LittleEndian Mode */
+struct ep_td_struct {
+ u32 next_td_ptr; /* Next TD pointer(31-5), T(0) set
+ indicate invalid */
+ u32 size_ioc_sts; /* Total bytes (30-16), IOC (15),
+ MultO(11-10), STS (7-0) */
+ u32 buff_ptr0; /* Buffer pointer Page 0 */
+ u32 buff_ptr1; /* Buffer pointer Page 1 */
+ u32 buff_ptr2; /* Buffer pointer Page 2 */
+ u32 buff_ptr3; /* Buffer pointer Page 3 */
+ u32 buff_ptr4; /* Buffer pointer Page 4 */
+ u32 res;
+ /* 32 bytes */
+ dma_addr_t td_dma; /* dma address for this td */
+ /* virtual address of next td specified in next_td_ptr */
+ struct ep_td_struct *next_td_virt;
+};
+
+/* Endpoint Transfer Descriptor bit Masks */
+#define DTD_NEXT_TERMINATE 0x00000001
+#define DTD_IOC 0x00008000
+#define DTD_STATUS_ACTIVE 0x00000080
+#define DTD_STATUS_HALTED 0x00000040
+#define DTD_STATUS_DATA_BUFF_ERR 0x00000020
+#define DTD_STATUS_TRANSACTION_ERR 0x00000008
+#define DTD_RESERVED_FIELDS 0x80007300
+#define DTD_ADDR_MASK 0xFFFFFFE0
+#define DTD_PACKET_SIZE 0x7FFF0000
+#define DTD_LENGTH_BIT_POS 16
+#define DTD_ERROR_MASK (DTD_STATUS_HALTED | \
+ DTD_STATUS_DATA_BUFF_ERR | \
+ DTD_STATUS_TRANSACTION_ERR)
+/* Alignment requirements; must be a power of two */
+#define DTD_ALIGNMENT 0x20
+#define QH_ALIGNMENT 2048
+
+/* Controller dma boundary */
+#define UDC_DMA_BOUNDARY 0x1000
+
+/* -----------------------------------------------------------------------*/
+/* ##### enum data
+*/
+typedef enum {
+ e_ULPI,
+ e_UTMI_8BIT,
+ e_UTMI_16BIT,
+ e_SERIAL
+} e_PhyInterface;
+
+/*-------------------------------------------------------------------------*/
+
+/* ### driver private data
+ */
+struct fsl_req {
+ struct usb_request req;
+ struct list_head queue;
+ /* ep_queue() func will add
+ a request->queue into a udc_ep->queue 'd tail */
+ struct fsl_ep *ep;
+ unsigned mapped:1;
+
+ struct ep_td_struct *head, *tail; /* For dTD List
+ cpu endian Virtual addr */
+ unsigned int dtd_count;
+};
+
+#define REQ_UNCOMPLETE 1
+
+struct fsl_ep {
+ struct usb_ep ep;
+ struct list_head queue;
+ struct fsl_udc *udc;
+ struct ep_queue_head *qh;
+ const struct usb_endpoint_descriptor *desc;
+ struct usb_gadget *gadget;
+
+ char name[14];
+ unsigned stopped:1;
+};
+
+#define EP_DIR_IN 1
+#define EP_DIR_OUT 0
+
+struct fsl_udc {
+
+ struct usb_gadget gadget;
+ struct usb_gadget_driver *driver;
+ struct fsl_ep *eps;
+ unsigned int max_ep;
+ unsigned int irq;
+
+ struct usb_ctrlrequest local_setup_buff;
+ spinlock_t lock;
+ struct otg_transceiver *transceiver;
+ unsigned softconnect:1;
+ unsigned vbus_active:1;
+ unsigned stopped:1;
+ unsigned remote_wakeup:1;
+
+ struct ep_queue_head *ep_qh; /* Endpoints Queue-Head */
+ struct fsl_req *status_req; /* ep0 status request */
+ struct dma_pool *td_pool; /* dma pool for DTD */
+ enum fsl_usb2_phy_modes phy_mode;
+
+ size_t ep_qh_size; /* size after alignment adjustment*/
+ dma_addr_t ep_qh_dma; /* dma address of QH */
+
+ u32 max_pipes; /* Device max pipes */
+ u32 max_use_endpts; /* Max endpointes to be used */
+ u32 bus_reset; /* Device is bus reseting */
+ u32 resume_state; /* USB state to resume */
+ u32 usb_state; /* USB current state */
+ u32 usb_next_state; /* USB next state */
+ u32 ep0_state; /* Endpoint zero state */
+ u32 ep0_dir; /* Endpoint zero direction: can be
+ USB_DIR_IN or USB_DIR_OUT */
+ u32 usb_sof_count; /* SOF count */
+ u32 errors; /* USB ERRORs count */
+ u8 device_address; /* Device USB address */
+
+ struct completion *done; /* to make sure release() is done */
+};
+
+/*-------------------------------------------------------------------------*/
+
+#ifdef DEBUG
+#define DBG(fmt, args...) printk(KERN_DEBUG "[%s] " fmt "\n", \
+ __FUNCTION__, ## args)
+#else
+#define DBG(fmt, args...) do{}while(0)
+#endif
+
+#if 0
+static void dump_msg(const char *label, const u8 * buf, unsigned int length)
+{
+ unsigned int start, num, i;
+ char line[52], *p;
+
+ if (length >= 512)
+ return;
+ DBG("%s, length %u:\n", label, length);
+ start = 0;
+ while (length > 0) {
+ num = min(length, 16u);
+ p = line;
+ for (i = 0; i < num; ++i) {
+ if (i == 8)
+ *p++ = ' ';
+ sprintf(p, " %02x", buf[i]);
+ p += 3;
+ }
+ *p = 0;
+ printk(KERN_DEBUG "%6x: %s\n", start, line);
+ buf += num;
+ start += num;
+ length -= num;
+ }
+}
+#endif
+
+#ifdef VERBOSE
+#define VDBG DBG
+#else
+#define VDBG(stuff...) do{}while(0)
+#endif
+
+#define ERR(stuff...) printk(KERN_ERR "udc: " stuff)
+#define WARN(stuff...) printk(KERN_WARNING "udc: " stuff)
+#define INFO(stuff...) printk(KERN_INFO "udc: " stuff)
+
+/*-------------------------------------------------------------------------*/
+
+/* ### Add board specific defines here
+ */
+
+/*
+ * ### pipe direction macro from device view
+ */
+#define USB_RECV 0 /* OUT EP */
+#define USB_SEND 1 /* IN EP */
+
+/*
+ * ### internal used help routines.
+ */
+#define ep_index(EP) ((EP)->desc->bEndpointAddress&0xF)
+#define ep_maxpacket(EP) ((EP)->ep.maxpacket)
+#define ep_is_in(EP) ( (ep_index(EP) == 0) ? (EP->udc->ep0_dir == \
+ USB_DIR_IN ):((EP)->desc->bEndpointAddress \
+ & USB_DIR_IN)==USB_DIR_IN)
+#define get_ep_by_pipe(udc, pipe) ((pipe == 1)? &udc->eps[0]: \
+ &udc->eps[pipe])
+#define get_pipe_by_windex(windex) ((windex & USB_ENDPOINT_NUMBER_MASK) \
+ * 2 + ((windex & USB_DIR_IN) ? 1 : 0))
+#define get_pipe_by_ep(EP) (ep_index(EP) * 2 + ep_is_in(EP))
+
+#endif
projects / linux-2.6-microblaze.git / commitdiff