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Commit b504882d authored by Li Yang's avatar Li Yang Committed by Greg Kroah-Hartman
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USB: add Freescale high-speed USB SOC device controller driver 

Freescale high-speed USB SOC can be found on some Freescale processors
among different architectures.  It supports both host and device functions.
This driver adds its device support for Linux USB Gadget layer.
It is tested on MPC8349 and MPC8313, but should work on other platforms
with minor tweaks.  The driver passed USBCV 1.3 compliance tests.  Note
that this driver doesn't yet include OTG support.
Signed-off-by: default avatarLi Yang <leoli@freescale.com>
Signed-off-by: default avatarJiang Bo <tanya.jiang@freescale.com>
Signed-off-by: default avatarBruce Schmid <duck@freescale.com>
Signed-off-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 33f73e56
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drivers/usb/gadget/Kconfig
View file @ b504882d
......@@ -68,6 +68,27 @@ choice
Many controller drivers are platform-specific; these
often need board-specific hooks.
config USB_GADGET_FSL_USB2
boolean "Freescale Highspeed USB DR Peripheral Controller"
depends on MPC834x || PPC_MPC831x
select USB_GADGET_DUALSPEED
help
Some of Freescale PowerPC processors have a High Speed
Dual-Role(DR) USB controller, which supports device mode.
The number of programmable endpoints is different through
SOC revisions.
Say "y" to link the driver statically, or "m" to build a
dynamically linked module called "fsl_usb2_udc" and force
all gadget drivers to also be dynamically linked.
config USB_FSL_USB2
tristate
depends on USB_GADGET_FSL_USB2
default USB_GADGET
select USB_GADGET_SELECTED
config USB_GADGET_NET2280
boolean "NetChip 228x"
depends on PCI
......
drivers/usb/gadget/Makefile
View file @ b504882d
......@@ -8,6 +8,7 @@ obj-$(CONFIG_USB_GOKU) += goku_udc.o
obj-$(CONFIG_USB_OMAP) += omap_udc.o
obj-$(CONFIG_USB_LH7A40X) += lh7a40x_udc.o
obj-$(CONFIG_USB_AT91) += at91_udc.o
obj-$(CONFIG_USB_FSL_USB2) += fsl_usb2_udc.o
#
# USB gadget drivers
......
drivers/usb/gadget/fsl_usb2_udc.c 0 → 100644
View file @ b504882d
/*
* 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");
drivers/usb/gadget/fsl_usb2_udc.h 0 → 100644
View file @ b504882d
/*
* 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
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