diff options
Diffstat (limited to 'target/linux/xburst/files-2.6.32/drivers/usb')
| -rw-r--r-- | target/linux/xburst/files-2.6.32/drivers/usb/gadget/jz4740_udc.c | 2440 | ||||
| -rw-r--r-- | target/linux/xburst/files-2.6.32/drivers/usb/gadget/jz4740_udc.h | 99 |
2 files changed, 0 insertions, 2539 deletions
diff --git a/target/linux/xburst/files-2.6.32/drivers/usb/gadget/jz4740_udc.c b/target/linux/xburst/files-2.6.32/drivers/usb/gadget/jz4740_udc.c deleted file mode 100644 index 8c58494b91..0000000000 --- a/target/linux/xburst/files-2.6.32/drivers/usb/gadget/jz4740_udc.c +++ /dev/null @@ -1,2440 +0,0 @@ -/* - * linux/drivers/usb/gadget/jz4740_udc.c - * - * Ingenic JZ4740 on-chip high speed USB device controller - * - * Copyright (C) 2006 - 2008 Ingenic Semiconductor Inc. - * Author: <jlwei@ingenic.cn> - * - * 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. - */ - -/* - * This device has ep0, two bulk-in/interrupt-in endpoints, and one bulk-out endpoint. - * - * - Endpoint numbering is fixed: ep0, ep1in-int, ep2in-bulk, ep1out-bulk. - * - DMA works with bulk-in (channel 1) and bulk-out (channel 2) endpoints. - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/delay.h> -#include <linux/ioport.h> -#include <linux/slab.h> -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/list.h> -#include <linux/interrupt.h> -#include <linux/proc_fs.h> -#include <linux/usb.h> -#include <linux/usb/gadget.h> -#include <linux/clk.h> - -#include <asm/byteorder.h> -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/system.h> -#include <asm/mach-jz4740/jz4740.h> -#include <asm/mach-jz4740/clock.h> - -#include "jz4740_udc.h" - -#define JZ_REG_UDC_FADDR 0x00 /* Function Address 8-bit */ -#define JZ_REG_UDC_POWER 0x01 /* Power Managemetn 8-bit */ -#define JZ_REG_UDC_INTRIN 0x02 /* Interrupt IN 16-bit */ -#define JZ_REG_UDC_INTROUT 0x04 /* Interrupt OUT 16-bit */ -#define JZ_REG_UDC_INTRINE 0x06 /* Intr IN enable 16-bit */ -#define JZ_REG_UDC_INTROUTE 0x08 /* Intr OUT enable 16-bit */ -#define JZ_REG_UDC_INTRUSB 0x0a /* Interrupt USB 8-bit */ - #define JZ_REG_UDC_INTRUSBE 0x0b /* Interrupt USB Enable 8-bit */ -#define JZ_REG_UDC_FRAME 0x0c /* Frame number 16-bit */ -#define JZ_REG_UDC_INDEX 0x0e /* Index register 8-bit */ -#define JZ_REG_UDC_TESTMODE 0x0f /* USB test mode 8-bit */ - -#define JZ_REG_UDC_CSR0 0x12 /* EP0 CSR 8-bit */ -#define JZ_REG_UDC_INMAXP 0x10 /* EP1-2 IN Max Pkt Size 16-bit */ -#define JZ_REG_UDC_INCSR 0x12 /* EP1-2 IN CSR LSB 8/16bit */ -#define JZ_REG_UDC_INCSRH 0x13 /* EP1-2 IN CSR MSB 8-bit */ -#define JZ_REG_UDC_OUTMAXP 0x14 /* EP1 OUT Max Pkt Size 16-bit */ -#define JZ_REG_UDC_OUTCSR 0x16 /* EP1 OUT CSR LSB 8/16bit */ -#define JZ_REG_UDC_OUTCSRH 0x17 /* EP1 OUT CSR MSB 8-bit */ -#define JZ_REG_UDC_OUTCOUNT 0x18 /* bytes in EP0/1 OUT FIFO 16-bit */ - -#define JZ_REG_UDC_EP_FIFO(x) (4 * (x) + 0x20) - -#define JZ_REG_UDC_EPINFO 0x78 /* Endpoint information */ -#define JZ_REG_UDC_RAMINFO 0x79 /* RAM information */ - -#define JZ_REG_UDC_INTR 0x200 /* DMA pending interrupts */ -#define JZ_REG_UDC_CNTL1 0x204 /* DMA channel 1 control */ -#define JZ_REG_UDC_ADDR1 0x208 /* DMA channel 1 AHB memory addr */ -#define JZ_REG_UDC_COUNT1 0x20c /* DMA channel 1 byte count */ -#define JZ_REG_UDC_CNTL2 0x214 /* DMA channel 2 control */ -#define JZ_REG_UDC_ADDR2 0x218 /* DMA channel 2 AHB memory addr */ -#define JZ_REG_UDC_COUNT2 0x21c /* DMA channel 2 byte count */ - -/* Power register bit masks */ -#define USB_POWER_SUSPENDM 0x01 -#define USB_POWER_RESUME 0x04 -#define USB_POWER_HSMODE 0x10 -#define USB_POWER_HSENAB 0x20 -#define USB_POWER_SOFTCONN 0x40 - -/* Interrupt register bit masks */ -#define USB_INTR_SUSPEND 0x01 -#define USB_INTR_RESUME 0x02 -#define USB_INTR_RESET 0x04 - -#define USB_INTR_EP0 0x0001 -#define USB_INTR_INEP1 0x0002 -#define USB_INTR_INEP2 0x0004 -#define USB_INTR_OUTEP1 0x0002 - -/* CSR0 bit masks */ -#define USB_CSR0_OUTPKTRDY 0x01 -#define USB_CSR0_INPKTRDY 0x02 -#define USB_CSR0_SENTSTALL 0x04 -#define USB_CSR0_DATAEND 0x08 -#define USB_CSR0_SETUPEND 0x10 -#define USB_CSR0_SENDSTALL 0x20 -#define USB_CSR0_SVDOUTPKTRDY 0x40 -#define USB_CSR0_SVDSETUPEND 0x80 - -/* Endpoint CSR register bits */ -#define USB_INCSRH_AUTOSET 0x80 -#define USB_INCSRH_ISO 0x40 -#define USB_INCSRH_MODE 0x20 -#define USB_INCSRH_DMAREQENAB 0x10 -#define USB_INCSRH_DMAREQMODE 0x04 -#define USB_INCSR_CDT 0x40 -#define USB_INCSR_SENTSTALL 0x20 -#define USB_INCSR_SENDSTALL 0x10 -#define USB_INCSR_FF 0x08 -#define USB_INCSR_UNDERRUN 0x04 -#define USB_INCSR_FFNOTEMPT 0x02 -#define USB_INCSR_INPKTRDY 0x01 -#define USB_OUTCSRH_AUTOCLR 0x80 -#define USB_OUTCSRH_ISO 0x40 -#define USB_OUTCSRH_DMAREQENAB 0x20 -#define USB_OUTCSRH_DNYT 0x10 -#define USB_OUTCSRH_DMAREQMODE 0x08 -#define USB_OUTCSR_CDT 0x80 -#define USB_OUTCSR_SENTSTALL 0x40 -#define USB_OUTCSR_SENDSTALL 0x20 -#define USB_OUTCSR_FF 0x10 -#define USB_OUTCSR_DATAERR 0x08 -#define USB_OUTCSR_OVERRUN 0x04 -#define USB_OUTCSR_FFFULL 0x02 -#define USB_OUTCSR_OUTPKTRDY 0x01 - -/* Testmode register bits */ -#define USB_TEST_SE0NAK 0x01 -#define USB_TEST_J 0x02 -#define USB_TEST_K 0x04 -#define USB_TEST_PACKET 0x08 - -/* DMA control bits */ -#define USB_CNTL_ENA 0x01 -#define USB_CNTL_DIR_IN 0x02 -#define USB_CNTL_MODE_1 0x04 -#define USB_CNTL_INTR_EN 0x08 -#define USB_CNTL_EP(n) ((n) << 4) -#define USB_CNTL_BURST_0 (0 << 9) -#define USB_CNTL_BURST_4 (1 << 9) -#define USB_CNTL_BURST_8 (2 << 9) -#define USB_CNTL_BURST_16 (3 << 9) - - -#ifndef DEBUG -# define DEBUG(fmt,args...) do {} while(0) -#endif -#ifndef DEBUG_EP0 -# define NO_STATES -# define DEBUG_EP0(fmt,args...) do {} while(0) -#endif -#ifndef DEBUG_SETUP -# define DEBUG_SETUP(fmt,args...) do {} while(0) -#endif - -static unsigned int use_dma = 0; /* 1: use DMA, 0: use PIO */ - -module_param(use_dma, int, 0); -MODULE_PARM_DESC(use_dma, "DMA mode enable flag"); - -struct jz4740_udc *the_controller; - -/* - * Local declarations. - */ -static void jz4740_ep0_kick(struct jz4740_udc *dev, struct jz4740_ep *ep); -static void jz4740_handle_ep0(struct jz4740_udc *dev, uint32_t intr); - -static void done(struct jz4740_ep *ep, struct jz4740_request *req, - int status); -static void pio_irq_enable(struct jz4740_ep *ep); -static void pio_irq_disable(struct jz4740_ep *ep); -static void stop_activity(struct jz4740_udc *dev, - struct usb_gadget_driver *driver); -static void nuke(struct jz4740_ep *ep, int status); -static void flush(struct jz4740_ep *ep); -static void udc_set_address(struct jz4740_udc *dev, unsigned char address); - -/*-------------------------------------------------------------------------*/ - -/* inline functions of register read/write/set/clear */ - -static inline uint8_t usb_readb(struct jz4740_udc *udc, size_t reg) -{ - return readb(udc->base + reg); -} - -static inline uint16_t usb_readw(struct jz4740_udc *udc, size_t reg) -{ - return readw(udc->base + reg); -} - -static inline uint32_t usb_readl(struct jz4740_udc *udc, size_t reg) -{ - return readl(udc->base + reg); -} - -static inline void usb_writeb(struct jz4740_udc *udc, size_t reg, uint8_t val) -{ - writeb(val, udc->base + reg); -} - -static inline void usb_writew(struct jz4740_udc *udc, size_t reg, uint16_t val) -{ - writew(val, udc->base + reg); -} - -static inline void usb_writel(struct jz4740_udc *udc, size_t reg, uint32_t val) -{ - writel(val, udc->base + reg); -} - -static inline void usb_setb(struct jz4740_udc *udc, size_t reg, uint8_t mask) -{ - usb_writeb(udc, reg, usb_readb(udc, reg) | mask); -} - -static inline void usb_setw(struct jz4740_udc *udc, size_t reg, uint8_t mask) -{ - usb_writew(udc, reg, usb_readw(udc, reg) | mask); -} - -static inline void usb_setl(struct jz4740_udc *udc, size_t reg, uint32_t mask) -{ - usb_writel(udc, reg, usb_readl(udc, reg) | mask); -} - -static inline void usb_clearb(struct jz4740_udc *udc, size_t reg, uint8_t mask) -{ - usb_writeb(udc, reg, usb_readb(udc, reg) & ~mask); -} - -static inline void usb_clearw(struct jz4740_udc *udc, size_t reg, uint16_t mask) -{ - usb_writew(udc, reg, usb_readw(udc, reg) & ~mask); -} - -static inline void usb_clearl(struct jz4740_udc *udc, size_t reg, uint32_t mask) -{ - usb_writel(udc, reg, usb_readl(udc, reg) & ~mask); -} - -/*-------------------------------------------------------------------------*/ - -static inline void jz_udc_set_index(struct jz4740_udc *udc, uint8_t index) -{ - usb_writeb(udc, JZ_REG_UDC_INDEX, index); -} - -static inline void jz_udc_select_ep(struct jz4740_ep *ep) -{ - jz_udc_set_index(ep->dev, ep_index(ep)); -} - -static inline int write_packet(struct jz4740_ep *ep, - struct jz4740_request *req, int max) -{ - uint8_t *buf; - int length, nlong, nbyte; - DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__); - - buf = req->req.buf + req->req.actual; - prefetch(buf); - - length = req->req.length - req->req.actual; - length = min(length, max); - req->req.actual += length; - - DEBUG("Write %d (max %d), fifo %x\n", length, max, ep->fifo); - - nlong = length >> 2; - nbyte = length & 0x3; - while (nlong--) { - usb_writel(ep->dev, ep->fifo, *((uint32_t *)buf)); - buf += 4; - } - while (nbyte--) { - usb_writeb(ep->dev, ep->fifo, *buf++); - } - - return length; -} - -static inline int read_packet(struct jz4740_ep *ep, - struct jz4740_request *req, int count) -{ - uint8_t *buf; - int length, nlong, nbyte; - DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__); - - buf = req->req.buf + req->req.actual; - prefetchw(buf); - - length = req->req.length - req->req.actual; - length = min(length, count); - req->req.actual += length; - - DEBUG("Read %d, fifo %x\n", length, ep->fifo); - - nlong = length >> 2; - nbyte = length & 0x3; - while (nlong--) { - *((uint32_t *)buf) = usb_readl(ep->dev, ep->fifo); - buf += 4; - } - while (nbyte--) { - *buf++ = usb_readb(ep->dev, ep->fifo); - } - - return length; -} - -/*-------------------------------------------------------------------------*/ - -/* - * udc_disable - disable USB device controller - */ -static void udc_disable(struct jz4740_udc *dev) -{ - DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__); - - udc_set_address(dev, 0); - - /* Disable interrupts */ - usb_writew(dev, JZ_REG_UDC_INTRINE, 0); - usb_writew(dev, JZ_REG_UDC_INTROUTE, 0); - usb_writeb(dev, JZ_REG_UDC_INTRUSBE, 0); - - /* Disable DMA */ - usb_writel(dev, JZ_REG_UDC_CNTL1, 0); - usb_writel(dev, JZ_REG_UDC_CNTL2, 0); - - /* Disconnect from usb */ - usb_clearb(dev, JZ_REG_UDC_POWER, USB_POWER_SOFTCONN); - - /* Disable the USB PHY */ - clk_disable(dev->clk); - - dev->ep0state = WAIT_FOR_SETUP; - dev->gadget.speed = USB_SPEED_UNKNOWN; - - return; -} - -/* - * udc_reinit - initialize software state - */ -static void udc_reinit(struct jz4740_udc *dev) -{ - int i; - DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__); - - /* device/ep0 records init */ - INIT_LIST_HEAD(&dev->gadget.ep_list); - INIT_LIST_HEAD(&dev->gadget.ep0->ep_list); - dev->ep0state = WAIT_FOR_SETUP; - - for (i = 0; i < UDC_MAX_ENDPOINTS; i++) { - struct jz4740_ep *ep = &dev->ep[i]; - - if (i != 0) - list_add_tail(&ep->ep.ep_list, &dev->gadget.ep_list); - - INIT_LIST_HEAD(&ep->queue); - ep->desc = 0; - ep->stopped = 0; - ep->pio_irqs = 0; - } -} - -/* until it's enabled, this UDC should be completely invisible - * to any USB host. - */ -static void udc_enable(struct jz4740_udc *dev) -{ - int i; - DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__); - - /* UDC state is incorrect - Added by River */ - if (dev->state != UDC_STATE_ENABLE) { - return; - } - - dev->gadget.speed = USB_SPEED_UNKNOWN; - - /* Flush FIFO for each */ - for (i = 0; i < UDC_MAX_ENDPOINTS; i++) { - struct jz4740_ep *ep = &dev->ep[i]; - - jz_udc_set_index(dev, ep_index(ep)); - flush(ep); - } - - /* Set this bit to allow the UDC entering low-power mode when - * there are no actions on the USB bus. - * UDC still works during this bit was set. - */ - jz4740_clock_udc_enable_auto_suspend(); - - /* Enable the USB PHY */ - clk_enable(dev->clk); - - /* Disable interrupts */ -/* usb_writew(dev, JZ_REG_UDC_INTRINE, 0); - usb_writew(dev, JZ_REG_UDC_INTROUTE, 0); - usb_writeb(dev, JZ_REG_UDC_INTRUSBE, 0);*/ - - /* Enable interrupts */ - usb_setw(dev, JZ_REG_UDC_INTRINE, USB_INTR_EP0); - usb_setb(dev, JZ_REG_UDC_INTRUSBE, USB_INTR_RESET); - /* Don't enable rest of the interrupts */ - /* usb_setw(dev, JZ_REG_UDC_INTRINE, USB_INTR_INEP1 | USB_INTR_INEP2); - usb_setw(dev, JZ_REG_UDC_INTROUTE, USB_INTR_OUTEP1); */ - - /* Enable SUSPEND */ - /* usb_setb(dev, JZ_REG_UDC_POWER, USB_POWER_SUSPENDM); */ - - /* Enable HS Mode */ - usb_setb(dev, JZ_REG_UDC_POWER, USB_POWER_HSENAB); - - /* Let host detect UDC: - * Software must write a 1 to the PMR:USB_POWER_SOFTCONN bit to turn this - * transistor on and pull the USBDP pin HIGH. - */ - usb_setb(dev, JZ_REG_UDC_POWER, USB_POWER_SOFTCONN); - - return; -} - -/*-------------------------------------------------------------------------*/ - -/* keeping it simple: - * - one bus driver, initted first; - * - one function driver, initted second - */ - -/* - * Register entry point for the peripheral controller driver. - */ - -int usb_gadget_register_driver(struct usb_gadget_driver *driver) -{ - struct jz4740_udc *dev = the_controller; - int retval; - - if (!driver || !driver->bind) { - return -EINVAL; - } - - if (!dev) { - return -ENODEV; - } - - if (dev->driver) { - return -EBUSY; - } - - /* hook up the driver */ - dev->driver = driver; - dev->gadget.dev.driver = &driver->driver; - - retval = driver->bind(&dev->gadget); - if (retval) { - DEBUG("%s: bind to driver %s --> error %d\n", dev->gadget.name, - driver->driver.name, retval); - dev->driver = 0; - return retval; - } - - /* then enable host detection and ep0; and we're ready - * for set_configuration as well as eventual disconnect. - */ - udc_enable(dev); - - DEBUG("%s: registered gadget driver '%s'\n", dev->gadget.name, - driver->driver.name); - - return 0; -} - -EXPORT_SYMBOL(usb_gadget_register_driver); - -static void stop_activity(struct jz4740_udc *dev, - struct usb_gadget_driver *driver) -{ - int i; - - DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__); - - /* don't disconnect drivers more than once */ - if (dev->gadget.speed == USB_SPEED_UNKNOWN) - driver = 0; - dev->gadget.speed = USB_SPEED_UNKNOWN; - - /* prevent new request submissions, kill any outstanding requests */ - for (i = 0; i < UDC_MAX_ENDPOINTS; i++) { - struct jz4740_ep *ep = &dev->ep[i]; - - ep->stopped = 1; - - jz_udc_set_index(dev, ep_index(ep)); - nuke(ep, -ESHUTDOWN); - } - - /* report disconnect; the driver is already quiesced */ - if (driver) { - spin_unlock(&dev->lock); - driver->disconnect(&dev->gadget); - spin_lock(&dev->lock); - } - - /* re-init driver-visible data structures */ - udc_reinit(dev); -} - - -/* - * Unregister entry point for the peripheral controller driver. - */ -int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) -{ - struct jz4740_udc *dev = the_controller; - unsigned long flags; - DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__); - - if (!dev) - return -ENODEV; - if (!driver || driver != dev->driver) - return -EINVAL; - if (!driver->unbind) - return -EBUSY; - - spin_lock_irqsave(&dev->lock, flags); - dev->driver = 0; - stop_activity(dev, driver); - spin_unlock_irqrestore(&dev->lock, flags); - - driver->unbind(&dev->gadget); - - udc_disable(dev); - - DEBUG("unregistered driver '%s'\n", driver->driver.name); - - return 0; -} - -EXPORT_SYMBOL(usb_gadget_unregister_driver); - -/*-------------------------------------------------------------------------*/ - -/* - * Starting DMA using mode 1 - */ -static void kick_dma(struct jz4740_ep *ep, struct jz4740_request *req) -{ - struct jz4740_udc *dev = ep->dev; - uint32_t count = req->req.length; - uint32_t physaddr = virt_to_phys((void *)req->req.buf); - - DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__); - - jz_udc_select_ep(ep); - - if (ep_is_in(ep)) { /* Bulk-IN transfer using DMA channel 1 */ - ep->reg_addr = JZ_REG_UDC_ADDR1; - - dma_cache_wback_inv((unsigned long)req->req.buf, count); - - pio_irq_enable(ep); - - usb_writeb(dev, JZ_REG_UDC_INCSRH, - USB_INCSRH_DMAREQENAB | USB_INCSRH_AUTOSET | USB_INCSRH_DMAREQMODE); - - usb_writel(dev, JZ_REG_UDC_ADDR1, physaddr); - usb_writel(dev, JZ_REG_UDC_COUNT1, count); - usb_writel(dev, JZ_REG_UDC_CNTL1, USB_CNTL_ENA | USB_CNTL_DIR_IN | USB_CNTL_MODE_1 | - USB_CNTL_INTR_EN | USB_CNTL_BURST_16 | USB_CNTL_EP(ep_index(ep))); - } - else { /* Bulk-OUT transfer using DMA channel 2 */ - ep->reg_addr = JZ_REG_UDC_ADDR2; - - dma_cache_wback_inv((unsigned long)req->req.buf, count); - - pio_irq_enable(ep); - - usb_setb(dev, JZ_REG_UDC_OUTCSRH, - USB_OUTCSRH_DMAREQENAB | USB_OUTCSRH_AUTOCLR | USB_OUTCSRH_DMAREQMODE); - - usb_writel(dev, JZ_REG_UDC_ADDR2, physaddr); - usb_writel(dev, JZ_REG_UDC_COUNT2, count); - usb_writel(dev, JZ_REG_UDC_CNTL2, USB_CNTL_ENA | USB_CNTL_MODE_1 | - USB_CNTL_INTR_EN | USB_CNTL_BURST_16 | USB_CNTL_EP(ep_index(ep))); - } -} - -/*-------------------------------------------------------------------------*/ - -/** Write request to FIFO (max write == maxp size) - * Return: 0 = still running, 1 = completed, negative = errno - * NOTE: INDEX register must be set for EP - */ -static int write_fifo(struct jz4740_ep *ep, struct jz4740_request *req) -{ - struct jz4740_udc *dev = ep->dev; - uint32_t max, csr; - uint32_t physaddr = virt_to_phys((void *)req->req.buf); - - DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__); - max = le16_to_cpu(ep->desc->wMaxPacketSize); - - if (use_dma) { - uint32_t dma_count; - - /* DMA interrupt generated due to the last packet loaded into the FIFO */ - - dma_count = usb_readl(dev, ep->reg_addr) - physaddr; - req->req.actual += dma_count; - - if (dma_count % max) { - /* If the last packet is less than MAXP, set INPKTRDY manually */ - usb_setb(dev, ep->csr, USB_INCSR_INPKTRDY); - } - - done(ep, req, 0); - if (list_empty(&ep->queue)) { - pio_irq_disable(ep); - return 1; - } - else { - /* advance the request queue */ - req = list_entry(ep->queue.next, struct jz4740_request, queue); - kick_dma(ep, req); - return 0; - } - } - - /* - * PIO mode handling starts here ... - */ - - csr = usb_readb(dev, ep->csr); - - if (!(csr & USB_INCSR_FFNOTEMPT)) { - unsigned count; - int is_last, is_short; - - count = write_packet(ep, req, max); - usb_setb(dev, ep->csr, USB_INCSR_INPKTRDY); - - /* last packet is usually short (or a zlp) */ - if (unlikely(count != max)) - is_last = is_short = 1; - else { - if (likely(req->req.length != req->req.actual) - || req->req.zero) - is_last = 0; - else - is_last = 1; - /* interrupt/iso maxpacket may not fill the fifo */ - is_short = unlikely(max < ep_maxpacket(ep)); - } - - DEBUG("%s: wrote %s %d bytes%s%s %d left %p\n", __FUNCTION__, - ep->ep.name, count, - is_last ? "/L" : "", is_short ? "/S" : "", - req->req.length - req->req.actual, req); - - /* requests complete when all IN data is in the FIFO */ - if (is_last) { - done(ep, req, 0); - if (list_empty(&ep->queue)) { - pio_irq_disable(ep); - } - return 1; - } - } else { - DEBUG("Hmm.. %d ep FIFO is not empty!\n", ep_index(ep)); - } - - return 0; -} - -/** Read to request from FIFO (max read == bytes in fifo) - * Return: 0 = still running, 1 = completed, negative = errno - * NOTE: INDEX register must be set for EP - */ -static int read_fifo(struct jz4740_ep *ep, struct jz4740_request *req) -{ - struct jz4740_udc *dev = ep->dev; - uint32_t csr; - unsigned count, is_short; - uint32_t physaddr = virt_to_phys((void *)req->req.buf); - - if (use_dma) { - uint32_t dma_count; - - /* DMA interrupt generated due to a packet less than MAXP loaded into the FIFO */ - - dma_count = usb_readl(dev, ep->reg_addr) - physaddr; - req->req.actual += dma_count; - - /* Disable interrupt and DMA */ - pio_irq_disable(ep); - usb_writel(dev, JZ_REG_UDC_CNTL2, 0); - - /* Read all bytes from this packet */ - count = usb_readw(dev, JZ_REG_UDC_OUTCOUNT); - count = read_packet(ep, req, count); - - if (count) { - /* If the last packet is greater than zero, clear OUTPKTRDY manually */ - usb_clearb(dev, ep->csr, USB_OUTCSR_OUTPKTRDY); - } - done(ep, req, 0); - - if (!list_empty(&ep->queue)) { - /* advance the request queue */ - req = list_entry(ep->queue.next, struct jz4740_request, queue); - kick_dma(ep, req); - } - - return 1; - } - - /* - * PIO mode handling starts here ... - */ - - /* make sure there's a packet in the FIFO. */ - csr = usb_readb(dev, ep->csr); - if (!(csr & USB_OUTCSR_OUTPKTRDY)) { - DEBUG("%s: Packet NOT ready!\n", __FUNCTION__); - return -EINVAL; - } - - /* read all bytes from this packet */ - count = usb_readw(dev, JZ_REG_UDC_OUTCOUNT); - - is_short = (count < ep->ep.maxpacket); - - count = read_packet(ep, req, count); - - DEBUG("read %s %02x, %d bytes%s req %p %d/%d\n", - ep->ep.name, csr, count, - is_short ? "/S" : "", req, req->req.actual, req->req.length); - - /* Clear OutPktRdy */ - usb_clearb(dev, ep->csr, USB_OUTCSR_OUTPKTRDY); - - /* completion */ - if (is_short || req->req.actual == req->req.length) { - done(ep, req, 0); - - if (list_empty(&ep->queue)) - pio_irq_disable(ep); - return 1; - } - - /* finished that packet. the next one may be waiting... */ - return 0; -} - -/* - * done - retire a request; caller blocked irqs - * INDEX register is preserved to keep same - */ -static void done(struct jz4740_ep *ep, struct jz4740_request *req, int status) -{ - unsigned int stopped = ep->stopped; - unsigned long flags; - uint32_t index; - - DEBUG("%s, %p\n", __FUNCTION__, ep); - list_del_init(&req->queue); - - if (likely(req->req.status == -EINPROGRESS)) - req->req.status = status; - else - status = req->req.status; - - if (status && status != -ESHUTDOWN) - DEBUG("complete %s req %p stat %d len %u/%u\n", - ep->ep.name, &req->req, status, - req->req.actual, req->req.length); - - /* don't modify queue heads during completion callback */ - ep->stopped = 1; - /* Read current index (completion may modify it) */ - spin_lock_irqsave(&ep->dev->lock, flags); - index = usb_readb(ep->dev, JZ_REG_UDC_INDEX); - - req->req.complete(&ep->ep, &req->req); - - /* Restore index */ - jz_udc_set_index(ep->dev, index); - spin_unlock_irqrestore(&ep->dev->lock, flags); - ep->stopped = stopped; -} - -/** Enable EP interrupt */ -static void pio_irq_enable(struct jz4740_ep *ep) -{ - uint8_t index = ep_index(ep); - struct jz4740_udc *dev = ep->dev; - DEBUG("%s: EP%d %s\n", __FUNCTION__, ep_index(ep), ep_is_in(ep) ? "IN": "OUT"); - - if (ep_is_in(ep)) { - switch (index) { - case 1: - case 2: - usb_setw(dev, JZ_REG_UDC_INTRINE, BIT(index)); - dev->in_mask |= BIT(index); - break; - default: - DEBUG("Unknown endpoint: %d\n", index); - break; - } - } - else { - switch (index) { - case 1: - usb_setw(dev, JZ_REG_UDC_INTROUTE, BIT(index)); - dev->out_mask |= BIT(index); - break; - default: - DEBUG("Unknown endpoint: %d\n", index); - break; - } - } -} - -/** Disable EP interrupt */ -static void pio_irq_disable(struct jz4740_ep *ep) -{ - uint8_t index = ep_index(ep); - struct jz4740_udc *dev = ep->dev; - - DEBUG("%s: EP%d %s\n", __FUNCTION__, ep_index(ep), ep_is_in(ep) ? "IN": "OUT"); - - if (ep_is_in(ep)) { - switch (ep_index(ep)) { - case 1: - case 2: - usb_clearw(ep->dev, JZ_REG_UDC_INTRINE, BIT(index)); - dev->in_mask &= ~BIT(index); - break; - default: - DEBUG("Unknown endpoint: %d\n", index); - break; - } - } - else { - switch (ep_index(ep)) { - case 1: - usb_clearw(ep->dev, JZ_REG_UDC_INTROUTE, BIT(index)); - dev->out_mask &= ~BIT(index); - break; - default: - DEBUG("Unknown endpoint: %d\n", index); - break; - } - } -} - -/* - * nuke - dequeue ALL requests - */ -static void nuke(struct jz4740_ep *ep, int status) -{ - struct jz4740_request *req; - - DEBUG("%s, %p\n", __FUNCTION__, ep); - - /* Flush FIFO */ - flush(ep); - - /* called with irqs blocked */ - while (!list_empty(&ep->queue)) { - req = list_entry(ep->queue.next, struct jz4740_request, queue); - done(ep, req, status); - } - - /* Disable IRQ if EP is enabled (has descriptor) */ - if (ep->desc) - pio_irq_disable(ep); -} - -/** Flush EP FIFO - * NOTE: INDEX register must be set before this call - */ -static void flush(struct jz4740_ep *ep) -{ - DEBUG("%s: %s\n", __FUNCTION__, ep->ep.name); - - switch (ep->type) { - case ep_bulk_in: - case ep_interrupt: - usb_setb(ep->dev, ep->csr, USB_INCSR_FF); - break; - case ep_bulk_out: - usb_setb(ep->dev, ep->csr, USB_OUTCSR_FF); - break; - case ep_control: - break; - } -} - -/** - * jz4740_in_epn - handle IN interrupt - */ -static void jz4740_in_epn(struct jz4740_udc *dev, uint32_t ep_idx, uint32_t intr) -{ - uint32_t csr; - struct jz4740_ep *ep = &dev->ep[ep_idx + 1]; - struct jz4740_request *req; - DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__); - - jz_udc_set_index(dev, ep_index(ep)); - - csr = usb_readb(dev, ep->csr); - DEBUG("%s: %d, csr %x\n", __FUNCTION__, ep_idx, csr); - - if (csr & USB_INCSR_SENTSTALL) { - DEBUG("USB_INCSR_SENTSTALL\n"); - usb_clearb(dev, ep->csr, USB_INCSR_SENTSTALL); - return; - } - - if (!ep->desc) { - DEBUG("%s: NO EP DESC\n", __FUNCTION__); - return; - } - - if (list_empty(&ep->queue)) - req = 0; - else - req = list_entry(ep->queue.next, struct jz4740_request, queue); - - DEBUG("req: %p\n", req); - - if (!req) - return; - - write_fifo(ep, req); -} - -/* - * Bulk OUT (recv) - */ -static void jz4740_out_epn(struct jz4740_udc *dev, uint32_t ep_idx, uint32_t intr) -{ - struct jz4740_ep *ep = &dev->ep[ep_idx]; - struct jz4740_request *req; - - DEBUG("%s: %d\n", __FUNCTION__, ep_idx); - - jz_udc_set_index(dev, ep_index(ep)); - if (ep->desc) { - uint32_t csr; - - if (use_dma) { - /* DMA starts here ... */ - if (list_empty(&ep->queue)) - req = 0; - else - req = list_entry(ep->queue.next, struct jz4740_request, queue); - - if (req) - read_fifo(ep, req); - return; - } - - /* - * PIO mode starts here ... - */ - - while ((csr = usb_readb(dev, ep->csr)) & - (USB_OUTCSR_OUTPKTRDY | USB_OUTCSR_SENTSTALL)) { - DEBUG("%s: %x\n", __FUNCTION__, csr); - - if (csr & USB_OUTCSR_SENTSTALL) { - DEBUG("%s: stall sent, flush fifo\n", - __FUNCTION__); - /* usb_set(USB_OUT_CSR1_FIFO_FLUSH, ep->csr1); */ - flush(ep); - } else if (csr & USB_OUTCSR_OUTPKTRDY) { - if (list_empty(&ep->queue)) - req = 0; - else - req = - list_entry(ep->queue.next, - struct jz4740_request, - queue); - - if (!req) { - DEBUG("%s: NULL REQ %d\n", - __FUNCTION__, ep_idx); - break; - } else { - read_fifo(ep, req); - } - } - } - } else { - /* Throw packet away.. */ - DEBUG("%s: ep %p ep_indx %d No descriptor?!?\n", __FUNCTION__, ep, ep_idx); - flush(ep); - } -} - -/** Halt specific EP - * Return 0 if success - * NOTE: Sets INDEX register to EP ! - */ -static int jz4740_set_halt(struct usb_ep *_ep, int value) -{ - struct jz4740_udc *dev; - struct jz4740_ep *ep; - unsigned long flags; - - DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__); - - ep = container_of(_ep, struct jz4740_ep, ep); - if (unlikely(!_ep || (!ep->desc && ep->type != ep_control))) { - DEBUG("%s, bad ep\n", __FUNCTION__); - return -EINVAL; - } - - dev = ep->dev; - - spin_lock_irqsave(&dev->lock, flags); - - jz_udc_select_ep(ep); - - DEBUG("%s, ep %d, val %d\n", __FUNCTION__, ep_index(ep), value); - - if (ep_index(ep) == 0) { - /* EP0 */ - usb_setb(dev, JZ_REG_UDC_CSR0, USB_CSR0_SENDSTALL); - } else if (ep_is_in(ep)) { - uint32_t csr = usb_readb(dev, ep->csr); - if (value && ((csr & USB_INCSR_FFNOTEMPT) - || !list_empty(&ep->queue))) { - /* - * Attempts to halt IN endpoints will fail (returning -EAGAIN) - * if any transfer requests are still queued, or if the controller - * FIFO still holds bytes that the host hasnt collected. - */ - spin_unlock_irqrestore(&dev->lock, flags); - DEBUG - ("Attempt to halt IN endpoint failed (returning -EAGAIN) %d %d\n", - (csr & USB_INCSR_FFNOTEMPT), - !list_empty(&ep->queue)); - return -EAGAIN; - } - flush(ep); - if (value) { - usb_setb(dev, ep->csr, USB_INCSR_SENDSTALL); - } - else { - usb_clearb(dev, ep->csr, USB_INCSR_SENDSTALL); - usb_setb(dev, ep->csr, USB_INCSR_CDT); - } - } else { - - flush(ep); - if (value) { - usb_setb(dev, ep->csr, USB_OUTCSR_SENDSTALL); - } - else { - usb_clearb(dev, ep->csr, USB_OUTCSR_SENDSTALL); - usb_setb(dev, ep->csr, USB_OUTCSR_CDT); - } - } - - if (value) { - ep->stopped = 1; - } else { - ep->stopped = 0; - } - - spin_unlock_irqrestore(&dev->lock, flags); - - DEBUG("%s %s halted\n", _ep->name, value == 0 ? "NOT" : "IS"); - - return 0; -} - - -static int jz4740_ep_enable(struct usb_ep *_ep, - const struct usb_endpoint_descriptor *desc) -{ - struct jz4740_ep *ep; - struct jz4740_udc *dev; - unsigned long flags; - uint32_t max, csrh = 0; - - DEBUG("%s: trying to enable %s\n", __FUNCTION__, _ep->name); - - if (!_ep || !desc) - return -EINVAL; - - ep = container_of(_ep, struct jz4740_ep, ep); - if (ep->desc || ep->type == ep_control - || desc->bDescriptorType != USB_DT_ENDPOINT - || ep->bEndpointAddress != desc->bEndpointAddress) { - DEBUG("%s, bad ep or descriptor\n", __FUNCTION__); - return -EINVAL; - } - - /* xfer types must match, except that interrupt ~= bulk */ - if (ep->bmAttributes != desc->bmAttributes - && ep->bmAttributes != USB_ENDPOINT_XFER_BULK - && desc->bmAttributes != USB_ENDPOINT_XFER_INT) { - DEBUG("%s, %s type mismatch\n", __FUNCTION__, _ep->name); - return -EINVAL; - } - - dev = ep->dev; - if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) { - DEBUG("%s, bogus device state\n", __FUNCTION__); - return -ESHUTDOWN; - } - - max = le16_to_cpu(desc->wMaxPacketSize); - - spin_lock_irqsave(&ep->dev->lock, flags); - - /* Configure the endpoint */ - jz_udc_set_index(dev, desc->bEndpointAddress & 0x0F); - if (ep_is_in(ep)) { - usb_writew(dev, JZ_REG_UDC_INMAXP, max); - switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { - case USB_ENDPOINT_XFER_BULK: - case USB_ENDPOINT_XFER_INT: - csrh &= ~USB_INCSRH_ISO; - break; - case USB_ENDPOINT_XFER_ISOC: - csrh |= USB_INCSRH_ISO; - break; - } - usb_writeb(dev, JZ_REG_UDC_INCSRH, csrh); - } - else { - usb_writew(dev, JZ_REG_UDC_OUTMAXP, max); - switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { - case USB_ENDPOINT_XFER_BULK: - csrh &= ~USB_OUTCSRH_ISO; - break; - case USB_ENDPOINT_XFER_INT: - csrh &= ~USB_OUTCSRH_ISO; - csrh |= USB_OUTCSRH_DNYT; - break; - case USB_ENDPOINT_XFER_ISOC: - csrh |= USB_OUTCSRH_ISO; - break; - } - usb_writeb(dev, JZ_REG_UDC_OUTCSRH, csrh); - } - - - ep->stopped = 0; - ep->desc = desc; - ep->pio_irqs = 0; - ep->ep.maxpacket = max; - - spin_unlock_irqrestore(&ep->dev->lock, flags); - - /* Reset halt state (does flush) */ - jz4740_set_halt(_ep, 0); - - DEBUG("%s: enabled %s\n", __FUNCTION__, _ep->name); - - return 0; -} - -/** Disable EP - * NOTE: Sets INDEX register - */ -static int jz4740_ep_disable(struct usb_ep *_ep) -{ - struct jz4740_ep *ep; - unsigned long flags; - - DEBUG("%s, %p\n", __FUNCTION__, _ep); - - ep = container_of(_ep, struct jz4740_ep, ep); - if (!_ep || !ep->desc) { - DEBUG("%s, %s not enabled\n", __FUNCTION__, - _ep ? ep->ep.name : NULL); - return -EINVAL; - } - - spin_lock_irqsave(&ep->dev->lock, flags); - - jz_udc_select_ep(ep); - - /* Nuke all pending requests (does flush) */ - nuke(ep, -ESHUTDOWN); - - /* Disable ep IRQ */ - pio_irq_disable(ep); - - ep->desc = 0; - ep->stopped = 1; - - spin_unlock_irqrestore(&ep->dev->lock, flags); - - DEBUG("%s: disabled %s\n", __FUNCTION__, _ep->name); - return 0; -} - -static struct usb_request *jz4740_alloc_request(struct usb_ep *ep, gfp_t gfp_flags) -{ - struct jz4740_request *req; - - DEBUG("%s, %p\n", __FUNCTION__, ep); - - req = kzalloc(sizeof(*req), gfp_flags); - if (!req) - return 0; - - INIT_LIST_HEAD(&req->queue); - - return &req->req; -} - -static void jz4740_free_request(struct usb_ep *ep, struct usb_request *_req) -{ - struct jz4740_request *req; - - DEBUG("%s, %p\n", __FUNCTION__, ep); - - req = container_of(_req, struct jz4740_request, req); - WARN_ON(!list_empty(&req->queue)); - kfree(req); -} - -/*--------------------------------------------------------------------*/ - -/** Queue one request - * Kickstart transfer if needed - * NOTE: Sets INDEX register - */ -static int jz4740_queue(struct usb_ep *_ep, struct usb_request *_req, - gfp_t gfp_flags) -{ - struct jz4740_request *req; - struct jz4740_ep *ep; - struct jz4740_udc *dev; - unsigned long flags; - - DEBUG("%s, %p\n", __FUNCTION__, _ep); - - req = container_of(_req, struct jz4740_request, req); - if (unlikely - (!_req || !_req->complete || !_req->buf - || !list_empty(&req->queue))) { - DEBUG("%s, bad params\n", __FUNCTION__); - return -EINVAL; - } - - ep = container_of(_ep, struct jz4740_ep, ep); - if (unlikely(!_ep || (!ep->desc && ep->type != ep_control))) { - DEBUG("%s, bad ep\n", __FUNCTION__); - return -EINVAL; - } - - dev = ep->dev; - if (unlikely(!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)) { - DEBUG("%s, bogus device state %p\n", __FUNCTION__, dev->driver); - return -ESHUTDOWN; - } - - DEBUG("%s queue req %p, len %d buf %p\n", _ep->name, _req, _req->length, - _req->buf); - - spin_lock_irqsave(&dev->lock, flags); - - _req->status = -EINPROGRESS; - _req->actual = 0; - - /* kickstart this i/o queue? */ - DEBUG("Add to %d Q %d %d\n", ep_index(ep), list_empty(&ep->queue), - ep->stopped); - if (list_empty(&ep->queue) && likely(!ep->stopped)) { - uint32_t csr; - - if (unlikely(ep_index(ep) == 0)) { - /* EP0 */ - list_add_tail(&req->queue, &ep->queue); - jz4740_ep0_kick(dev, ep); - req = 0; - } else if (use_dma) { - /* DMA */ - kick_dma(ep, req); - } - /* PIO */ - else if (ep_is_in(ep)) { - /* EP1 & EP2 */ - jz_udc_set_index(dev, ep_index(ep)); - csr = usb_readb(dev, ep->csr); - pio_irq_enable(ep); - if (!(csr & USB_INCSR_FFNOTEMPT)) { - if (write_fifo(ep, req) == 1) - req = 0; - } - } else { - /* EP1 */ - jz_udc_set_index(dev, ep_index(ep)); - csr = usb_readb(dev, ep->csr); - pio_irq_enable(ep); - if (csr & USB_OUTCSR_OUTPKTRDY) { - if (read_fifo(ep, req) == 1) - req = 0; - } - } - } - - /* pio or dma irq handler advances the queue. */ - if (likely(req != 0)) - list_add_tail(&req->queue, &ep->queue); - - spin_unlock_irqrestore(&dev->lock, flags); - - return 0; -} - -/* dequeue JUST ONE request */ -static int jz4740_dequeue(struct usb_ep *_ep, struct usb_request *_req) -{ - struct jz4740_ep *ep; - struct jz4740_request *req; - unsigned long flags; - - DEBUG("%s, %p\n", __FUNCTION__, _ep); - - ep = container_of(_ep, struct jz4740_ep, ep); - if (!_ep || ep->type == ep_control) - return -EINVAL; - - spin_lock_irqsave(&ep->dev->lock, flags); - - /* make sure it's actually queued on this endpoint */ - list_for_each_entry(req, &ep->queue, queue) { - if (&req->req == _req) - break; - } - if (&req->req != _req) { - spin_unlock_irqrestore(&ep->dev->lock, flags); - return -EINVAL; - } - done(ep, req, -ECONNRESET); - - spin_unlock_irqrestore(&ep->dev->lock, flags); - return 0; -} - -/** Return bytes in EP FIFO - * NOTE: Sets INDEX register to EP - */ -static int jz4740_fifo_status(struct usb_ep *_ep) -{ - uint32_t csr; - int count = 0; - struct jz4740_ep *ep; - unsigned long flags; - - ep = container_of(_ep, struct jz4740_ep, ep); - if (!_ep) { - DEBUG("%s, bad ep\n", __FUNCTION__); - return -ENODEV; - } - - DEBUG("%s, %d\n", __FUNCTION__, ep_index(ep)); - - /* LPD can't report unclaimed bytes from IN fifos */ - if (ep_is_in(ep)) - return -EOPNOTSUPP; - - spin_lock_irqsave(&ep->dev->lock, flags); - jz_udc_set_index(ep->dev, ep_index(ep)); - - csr = usb_readb(ep->dev, ep->csr); - if (ep->dev->gadget.speed != USB_SPEED_UNKNOWN || - csr & 0x1) { - count = usb_readw(ep->dev, JZ_REG_UDC_OUTCOUNT); - } - - spin_unlock_irqrestore(&ep->dev->lock, flags); - - return count; -} - -/** Flush EP FIFO - * NOTE: Sets INDEX register to EP - */ -static void jz4740_fifo_flush(struct usb_ep *_ep) -{ - struct jz4740_ep *ep; - unsigned long flags; - - DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__); - - ep = container_of(_ep, struct jz4740_ep, ep); - if (unlikely(!_ep || (!ep->desc && ep->type == ep_control))) { - DEBUG("%s, bad ep\n", __FUNCTION__); - return; - } - - spin_lock_irqsave(&ep->dev->lock, flags); - - jz_udc_set_index(ep->dev, ep_index(ep)); - flush(ep); - - spin_unlock_irqrestore(&ep->dev->lock, flags); -} - -/****************************************************************/ -/* End Point 0 related functions */ -/****************************************************************/ - -/* return: 0 = still running, 1 = completed, negative = errno */ -static int write_fifo_ep0(struct jz4740_ep *ep, struct jz4740_request *req) -{ - uint32_t max; - unsigned count; - int is_last; - - DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__); - max = ep_maxpacket(ep); - - count = write_packet(ep, req, max); - - /* last packet is usually short (or a zlp) */ - if (unlikely(count != max)) - is_last = 1; - else { - if (likely(req->req.length != req->req.actual) || req->req.zero) - is_last = 0; - else - is_last = 1; - } - - DEBUG_EP0("%s: wrote %s %d bytes%s %d left %p\n", __FUNCTION__, - ep->ep.name, count, - is_last ? "/L" : "", req->req.length - req->req.actual, req); - - /* requests complete when all IN data is in the FIFO */ - if (is_last) { - done(ep, req, 0); - return 1; - } - - return 0; -} - -static inline int jz4740_fifo_read(struct jz4740_ep *ep, - unsigned char *cp, int max) -{ - int bytes; - int count = usb_readw(ep->dev, JZ_REG_UDC_OUTCOUNT); - - if (count > max) - count = max; - bytes = count; - while (count--) - *cp++ = usb_readb(ep->dev, ep->fifo); - - return bytes; -} - -static inline void jz4740_fifo_write(struct jz4740_ep *ep, - unsigned char *cp, int count) -{ - DEBUG("fifo_write: %d %d\n", ep_index(ep), count); - while (count--) - usb_writeb(ep->dev, ep->fifo, *cp++); -} - -static int read_fifo_ep0(struct jz4740_ep *ep, struct jz4740_request *req) -{ - struct jz4740_udc *dev = ep->dev; - uint32_t csr; - uint8_t *buf; - unsigned bufferspace, count, is_short; - - DEBUG_EP0("%s\n", __FUNCTION__); - - csr = usb_readb(dev, JZ_REG_UDC_CSR0); - if (!(csr & USB_CSR0_OUTPKTRDY)) - return 0; - - buf = req->req.buf + req->req.actual; - prefetchw(buf); - bufferspace = req->req.length - req->req.actual; - - /* read all bytes from this packet */ - if (likely(csr & USB_CSR0_OUTPKTRDY)) { - count = usb_readw(dev, JZ_REG_UDC_OUTCOUNT); - req->req.actual += min(count, bufferspace); - } else /* zlp */ - count = 0; - - is_short = (count < ep->ep.maxpacket); - DEBUG_EP0("read %s %02x, %d bytes%s req %p %d/%d\n", - ep->ep.name, csr, count, - is_short ? "/S" : "", req, req->req.actual, req->req.length); - - while (likely(count-- != 0)) { - uint8_t byte = (uint8_t)usb_readl(dev, ep->fifo); - - if (unlikely(bufferspace == 0)) { - /* this happens when the driver's buffer - * is smaller than what the host sent. - * discard the extra data. - */ - if (req->req.status != -EOVERFLOW) - DEBUG_EP0("%s overflow %d\n", ep->ep.name, - count); - req->req.status = -EOVERFLOW; - } else { - *buf++ = byte; - bufferspace--; - } - } - - /* completion */ - if (is_short || req->req.actual == req->req.length) { - done(ep, req, 0); - return 1; - } - - /* finished that packet. the next one may be waiting... */ - return 0; -} - -/** - * udc_set_address - set the USB address for this device - * @address: - * - * Called from control endpoint function after it decodes a set address setup packet. - */ -static void udc_set_address(struct jz4740_udc *dev, unsigned char address) -{ - DEBUG_EP0("%s: %d\n", __FUNCTION__, address); - - dev->usb_address = address; - usb_writeb(dev, JZ_REG_UDC_FADDR, address); -} - -/* - * DATA_STATE_RECV (USB_CSR0_OUTPKTRDY) - * - if error - * set USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND | USB_CSR0_SENDSTALL bits - * - else - * set USB_CSR0_SVDOUTPKTRDY bit - if last set USB_CSR0_DATAEND bit - */ -static void jz4740_ep0_out(struct jz4740_udc *dev, uint32_t csr, int kickstart) -{ - struct jz4740_request *req; - struct jz4740_ep *ep = &dev->ep[0]; - int ret; - - DEBUG_EP0("%s: %x\n", __FUNCTION__, csr); - - if (list_empty(&ep->queue)) - req = 0; - else - req = list_entry(ep->queue.next, struct jz4740_request, queue); - - if (req) { - if (req->req.length == 0) { - DEBUG_EP0("ZERO LENGTH OUT!\n"); - usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND)); - dev->ep0state = WAIT_FOR_SETUP; - return; - } else if (kickstart) { - usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_SVDOUTPKTRDY)); - return; - } - ret = read_fifo_ep0(ep, req); - if (ret) { - /* Done! */ - DEBUG_EP0("%s: finished, waiting for status\n", - __FUNCTION__); - usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND)); - dev->ep0state = WAIT_FOR_SETUP; - } else { - /* Not done yet.. */ - DEBUG_EP0("%s: not finished\n", __FUNCTION__); - usb_setb(dev, JZ_REG_UDC_CSR0, USB_CSR0_SVDOUTPKTRDY); - } - } else { - DEBUG_EP0("NO REQ??!\n"); - } -} - -/* - * DATA_STATE_XMIT - */ -static int jz4740_ep0_in(struct jz4740_udc *dev, uint32_t csr) -{ - struct jz4740_request *req; - struct jz4740_ep *ep = &dev->ep[0]; - int ret, need_zlp = 0; - - DEBUG_EP0("%s: %x\n", __FUNCTION__, csr); - - if (list_empty(&ep->queue)) - req = 0; - else - req = list_entry(ep->queue.next, struct jz4740_request, queue); - - if (!req) { - DEBUG_EP0("%s: NULL REQ\n", __FUNCTION__); - return 0; - } - - if (req->req.length == 0) { - usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_INPKTRDY | USB_CSR0_DATAEND)); - dev->ep0state = WAIT_FOR_SETUP; - return 1; - } - - if (req->req.length - req->req.actual == EP0_MAXPACKETSIZE) { - /* Next write will end with the packet size, */ - /* so we need zero-length-packet */ - need_zlp = 1; - } - - ret = write_fifo_ep0(ep, req); - - if (ret == 1 && !need_zlp) { - /* Last packet */ - DEBUG_EP0("%s: finished, waiting for status\n", __FUNCTION__); - - usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_INPKTRDY | USB_CSR0_DATAEND)); - dev->ep0state = WAIT_FOR_SETUP; - } else { - DEBUG_EP0("%s: not finished\n", __FUNCTION__); - usb_setb(dev, JZ_REG_UDC_CSR0, USB_CSR0_INPKTRDY); - } - - if (need_zlp) { - DEBUG_EP0("%s: Need ZLP!\n", __FUNCTION__); - usb_setb(dev, JZ_REG_UDC_CSR0, USB_CSR0_INPKTRDY); - dev->ep0state = DATA_STATE_NEED_ZLP; - } - - return 1; -} - -static int jz4740_handle_get_status(struct jz4740_udc *dev, - struct usb_ctrlrequest *ctrl) -{ - struct jz4740_ep *ep0 = &dev->ep[0]; - struct jz4740_ep *qep; - int reqtype = (ctrl->bRequestType & USB_RECIP_MASK); - uint16_t val = 0; - - DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__); - - if (reqtype == USB_RECIP_INTERFACE) { - /* This is not supported. - * And according to the USB spec, this one does nothing.. - * Just return 0 - */ - DEBUG_SETUP("GET_STATUS: USB_RECIP_INTERFACE\n"); - } else if (reqtype == USB_RECIP_DEVICE) { - DEBUG_SETUP("GET_STATUS: USB_RECIP_DEVICE\n"); - val |= (1 << 0); /* Self powered */ - /*val |= (1<<1); *//* Remote wakeup */ - } else if (reqtype == USB_RECIP_ENDPOINT) { - int ep_num = (ctrl->wIndex & ~USB_DIR_IN); - - DEBUG_SETUP - ("GET_STATUS: USB_RECIP_ENDPOINT (%d), ctrl->wLength = %d\n", - ep_num, ctrl->wLength); - - if (ctrl->wLength > 2 || ep_num > 3) - return -EOPNOTSUPP; - - qep = &dev->ep[ep_num]; - if (ep_is_in(qep) != ((ctrl->wIndex & USB_DIR_IN) ? 1 : 0) - && ep_index(qep) != 0) { - return -EOPNOTSUPP; - } - - jz_udc_set_index(dev, ep_index(qep)); - - /* Return status on next IN token */ - switch (qep->type) { - case ep_control: - val = - (usb_readb(dev, qep->csr) & USB_CSR0_SENDSTALL) == - USB_CSR0_SENDSTALL; - break; - case ep_bulk_in: - case ep_interrupt: - val = - (usb_readb(dev, qep->csr) & USB_INCSR_SENDSTALL) == - USB_INCSR_SENDSTALL; - break; - case ep_bulk_out: - val = - (usb_readb(dev, qep->csr) & USB_OUTCSR_SENDSTALL) == - USB_OUTCSR_SENDSTALL; - break; - } - - /* Back to EP0 index */ - jz_udc_set_index(dev, 0); - - DEBUG_SETUP("GET_STATUS, ep: %d (%x), val = %d\n", ep_num, - ctrl->wIndex, val); - } else { - DEBUG_SETUP("Unknown REQ TYPE: %d\n", reqtype); - return -EOPNOTSUPP; - } - - /* Clear "out packet ready" */ - usb_setb(dev, JZ_REG_UDC_CSR0, USB_CSR0_SVDOUTPKTRDY); - /* Put status to FIFO */ - jz4740_fifo_write(ep0, (uint8_t *)&val, sizeof(val)); - /* Issue "In packet ready" */ - usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_INPKTRDY | USB_CSR0_DATAEND)); - - return 0; -} - -/* - * WAIT_FOR_SETUP (OUTPKTRDY) - * - read data packet from EP0 FIFO - * - decode command - * - if error - * set USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND | USB_CSR0_SENDSTALL bits - * - else - * set USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND bits - */ -static void jz4740_ep0_setup(struct jz4740_udc *dev, uint32_t csr) -{ - struct jz4740_ep *ep = &dev->ep[0]; - struct usb_ctrlrequest ctrl; - int i; - - DEBUG_SETUP("%s: %x\n", __FUNCTION__, csr); - - /* Nuke all previous transfers */ - nuke(ep, -EPROTO); - - /* read control req from fifo (8 bytes) */ - jz4740_fifo_read(ep, (unsigned char *)&ctrl, 8); - - DEBUG_SETUP("SETUP %02x.%02x v%04x i%04x l%04x\n", - ctrl.bRequestType, ctrl.bRequest, - ctrl.wValue, ctrl.wIndex, ctrl.wLength); - - /* Set direction of EP0 */ - if (likely(ctrl.bRequestType & USB_DIR_IN)) { - ep->bEndpointAddress |= USB_DIR_IN; - } else { - ep->bEndpointAddress &= ~USB_DIR_IN; - } - - /* Handle some SETUP packets ourselves */ - switch (ctrl.bRequest) { - case USB_REQ_SET_ADDRESS: - if (ctrl.bRequestType != (USB_TYPE_STANDARD | USB_RECIP_DEVICE)) - break; - - DEBUG_SETUP("USB_REQ_SET_ADDRESS (%d)\n", ctrl.wValue); - udc_set_address(dev, ctrl.wValue); - usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND)); - return; - - case USB_REQ_SET_CONFIGURATION: - if (ctrl.bRequestType != (USB_TYPE_STANDARD | USB_RECIP_DEVICE)) - break; - - DEBUG_SETUP("USB_REQ_SET_CONFIGURATION (%d)\n", ctrl.wValue); -/* usb_setb(JZ_REG_UDC_CSR0, (USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND));*/ - - /* Enable RESUME and SUSPEND interrupts */ - usb_setb(dev, JZ_REG_UDC_INTRUSBE, (USB_INTR_RESUME | USB_INTR_SUSPEND)); - break; - - case USB_REQ_SET_INTERFACE: - if (ctrl.bRequestType != (USB_TYPE_STANDARD | USB_RECIP_DEVICE)) - break; - - DEBUG_SETUP("USB_REQ_SET_INTERFACE (%d)\n", ctrl.wValue); -/* usb_setb(JZ_REG_UDC_CSR0, (USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND));*/ - break; - - case USB_REQ_GET_STATUS: - if (jz4740_handle_get_status(dev, &ctrl) == 0) - return; - - case USB_REQ_CLEAR_FEATURE: - case USB_REQ_SET_FEATURE: - if (ctrl.bRequestType == USB_RECIP_ENDPOINT) { - struct jz4740_ep *qep; - int ep_num = (ctrl.wIndex & 0x0f); - - /* Support only HALT feature */ - if (ctrl.wValue != 0 || ctrl.wLength != 0 - || ep_num > 3 || ep_num < 1) - break; - - qep = &dev->ep[ep_num]; - spin_unlock(&dev->lock); - if (ctrl.bRequest == USB_REQ_SET_FEATURE) { - DEBUG_SETUP("SET_FEATURE (%d)\n", - ep_num); - jz4740_set_halt(&qep->ep, 1); - } else { - DEBUG_SETUP("CLR_FEATURE (%d)\n", - ep_num); - jz4740_set_halt(&qep->ep, 0); - } - spin_lock(&dev->lock); - - jz_udc_set_index(dev, 0); - - /* Reply with a ZLP on next IN token */ - usb_setb(dev, JZ_REG_UDC_CSR0, - (USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND)); - return; - } - break; - - default: - break; - } - - /* gadget drivers see class/vendor specific requests, - * {SET,GET}_{INTERFACE,DESCRIPTOR,CONFIGURATION}, - * and more. - */ - if (dev->driver) { - /* device-2-host (IN) or no data setup command, process immediately */ - spin_unlock(&dev->lock); - - i = dev->driver->setup(&dev->gadget, &ctrl); - spin_lock(&dev->lock); - - if (unlikely(i < 0)) { - /* setup processing failed, force stall */ - DEBUG_SETUP - (" --> ERROR: gadget setup FAILED (stalling), setup returned %d\n", - i); - jz_udc_set_index(dev, 0); - usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND | USB_CSR0_SENDSTALL)); - - /* ep->stopped = 1; */ - dev->ep0state = WAIT_FOR_SETUP; - } - else { - DEBUG_SETUP("gadget driver setup ok (%d)\n", ctrl.wLength); -/* if (!ctrl.wLength) { - usb_setb(JZ_REG_UDC_CSR0, USB_CSR0_SVDOUTPKTRDY); - }*/ - } - } -} - -/* - * DATA_STATE_NEED_ZLP - */ -static void jz4740_ep0_in_zlp(struct jz4740_udc *dev, uint32_t csr) -{ - DEBUG_EP0("%s: %x\n", __FUNCTION__, csr); - - usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_INPKTRDY | USB_CSR0_DATAEND)); - dev->ep0state = WAIT_FOR_SETUP; -} - -/* - * handle ep0 interrupt - */ -static void jz4740_handle_ep0(struct jz4740_udc *dev, uint32_t intr) -{ - struct jz4740_ep *ep = &dev->ep[0]; - uint32_t csr; - - DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__); - /* Set index 0 */ - jz_udc_set_index(dev, 0); - csr = usb_readb(dev, JZ_REG_UDC_CSR0); - - DEBUG_EP0("%s: csr = %x state = \n", __FUNCTION__, csr);//, state_names[dev->ep0state]); - - /* - * if SENT_STALL is set - * - clear the SENT_STALL bit - */ - if (csr & USB_CSR0_SENTSTALL) { - DEBUG_EP0("%s: USB_CSR0_SENTSTALL is set: %x\n", __FUNCTION__, csr); - usb_clearb(dev, JZ_REG_UDC_CSR0, USB_CSR0_SENDSTALL | USB_CSR0_SENTSTALL); - nuke(ep, -ECONNABORTED); - dev->ep0state = WAIT_FOR_SETUP; - return; - } - - /* - * if a transfer is in progress && INPKTRDY and OUTPKTRDY are clear - * - fill EP0 FIFO - * - if last packet - * - set IN_PKT_RDY | DATA_END - * - else - * set IN_PKT_RDY - */ - if (!(csr & (USB_CSR0_INPKTRDY | USB_CSR0_OUTPKTRDY))) { - DEBUG_EP0("%s: INPKTRDY and OUTPKTRDY are clear\n", - __FUNCTION__); - - switch (dev->ep0state) { - case DATA_STATE_XMIT: - DEBUG_EP0("continue with DATA_STATE_XMIT\n"); - jz4740_ep0_in(dev, csr); - return; - case DATA_STATE_NEED_ZLP: - DEBUG_EP0("continue with DATA_STATE_NEED_ZLP\n"); - jz4740_ep0_in_zlp(dev, csr); - return; - default: - /* Stall? */ -// DEBUG_EP0("Odd state!! state = %s\n", -// state_names[dev->ep0state]); - dev->ep0state = WAIT_FOR_SETUP; - /* nuke(ep, 0); */ - /* usb_setb(ep->csr, USB_CSR0_SENDSTALL); */ -// break; - return; - } - } - - /* - * if SETUPEND is set - * - abort the last transfer - * - set SERVICED_SETUP_END_BIT - */ - if (csr & USB_CSR0_SETUPEND) { - DEBUG_EP0("%s: USB_CSR0_SETUPEND is set: %x\n", __FUNCTION__, csr); - - usb_setb(dev, JZ_REG_UDC_CSR0, USB_CSR0_SVDSETUPEND); - nuke(ep, 0); - dev->ep0state = WAIT_FOR_SETUP; - } - - /* - * if USB_CSR0_OUTPKTRDY is set - * - read data packet from EP0 FIFO - * - decode command - * - if error - * set SVDOUTPKTRDY | DATAEND | SENDSTALL bits - * - else - * set SVDOUTPKTRDY | DATAEND bits - */ - if (csr & USB_CSR0_OUTPKTRDY) { - - DEBUG_EP0("%s: EP0_OUT_PKT_RDY is set: %x\n", __FUNCTION__, - csr); - - switch (dev->ep0state) { - case WAIT_FOR_SETUP: - DEBUG_EP0("WAIT_FOR_SETUP\n"); - jz4740_ep0_setup(dev, csr); - break; - - case DATA_STATE_RECV: - DEBUG_EP0("DATA_STATE_RECV\n"); - jz4740_ep0_out(dev, csr, 0); - break; - - default: - /* send stall? */ - DEBUG_EP0("strange state!! 2. send stall? state = %d\n", - dev->ep0state); - break; - } - } -} - -static void jz4740_ep0_kick(struct jz4740_udc *dev, struct jz4740_ep *ep) -{ - uint32_t csr; - - jz_udc_set_index(dev, 0); - - DEBUG_EP0("%s: %x\n", __FUNCTION__, csr); - - /* Clear "out packet ready" */ - - if (ep_is_in(ep)) { - usb_setb(dev, JZ_REG_UDC_CSR0, USB_CSR0_SVDOUTPKTRDY); - csr = usb_readb(dev, JZ_REG_UDC_CSR0); - dev->ep0state = DATA_STATE_XMIT; - jz4740_ep0_in(dev, csr); - } else { - csr = usb_readb(dev, JZ_REG_UDC_CSR0); - dev->ep0state = DATA_STATE_RECV; - jz4740_ep0_out(dev, csr, 1); - } -} - -/** Handle USB RESET interrupt - */ -static void jz4740_reset_irq(struct jz4740_udc *dev) -{ - dev->gadget.speed = (usb_readb(dev, JZ_REG_UDC_POWER) & USB_POWER_HSMODE) ? - USB_SPEED_HIGH : USB_SPEED_FULL; - - DEBUG_SETUP("%s: address = %d, speed = %s\n", __FUNCTION__, dev->usb_address, - (dev->gadget.speed == USB_SPEED_HIGH) ? "HIGH":"FULL" ); -} - -/* - * jz4740 usb device interrupt handler. - */ -static irqreturn_t jz4740_udc_irq(int irq, void *_dev) -{ - struct jz4740_udc *dev = _dev; - uint8_t index; - - uint32_t intr_usb = usb_readb(dev, JZ_REG_UDC_INTRUSB) & 0x7; /* mask SOF */ - uint32_t intr_in = usb_readw(dev, JZ_REG_UDC_INTRIN); - uint32_t intr_out = usb_readw(dev, JZ_REG_UDC_INTROUT); - uint32_t intr_dma = usb_readb(dev, JZ_REG_UDC_INTR); - - if (!intr_usb && !intr_in && !intr_out && !intr_dma) - return IRQ_HANDLED; - - - DEBUG("intr_out=%x intr_in=%x intr_usb=%x\n", - intr_out, intr_in, intr_usb); - - spin_lock(&dev->lock); - index = usb_readb(dev, JZ_REG_UDC_INDEX); - - /* Check for resume from suspend mode */ - if ((intr_usb & USB_INTR_RESUME) && - (usb_readb(dev, JZ_REG_UDC_INTRUSBE) & USB_INTR_RESUME)) { - DEBUG("USB resume\n"); - dev->driver->resume(&dev->gadget); /* We have suspend(), so we must have resume() too. */ - } - - /* Check for system interrupts */ - if (intr_usb & USB_INTR_RESET) { - DEBUG("USB reset\n"); - jz4740_reset_irq(dev); - } - - /* Check for endpoint 0 interrupt */ - if (intr_in & USB_INTR_EP0) { - DEBUG("USB_INTR_EP0 (control)\n"); - jz4740_handle_ep0(dev, intr_in); - } - - /* Check for Bulk-IN DMA interrupt */ - if (intr_dma & 0x1) { - int ep_num; - struct jz4740_ep *ep; - ep_num = (usb_readl(dev, JZ_REG_UDC_CNTL1) >> 4) & 0xf; - ep = &dev->ep[ep_num + 1]; - jz_udc_set_index(dev, ep_num); - usb_setb(dev, ep->csr, USB_INCSR_INPKTRDY); -/* jz4740_in_epn(dev, ep_num, intr_in);*/ - } - - /* Check for Bulk-OUT DMA interrupt */ - if (intr_dma & 0x2) { - int ep_num; - ep_num = (usb_readl(dev, JZ_REG_UDC_CNTL2) >> 4) & 0xf; - jz4740_out_epn(dev, ep_num, intr_out); - } - - /* Check for each configured endpoint interrupt */ - if (intr_in & USB_INTR_INEP1) { - DEBUG("USB_INTR_INEP1\n"); - jz4740_in_epn(dev, 1, intr_in); - } - - if (intr_in & USB_INTR_INEP2) { - DEBUG("USB_INTR_INEP2\n"); - jz4740_in_epn(dev, 2, intr_in); - } - - if (intr_out & USB_INTR_OUTEP1) { - DEBUG("USB_INTR_OUTEP1\n"); - jz4740_out_epn(dev, 1, intr_out); - } - - /* Check for suspend mode */ - if ((intr_usb & USB_INTR_SUSPEND) && - (usb_readb(dev, JZ_REG_UDC_INTRUSBE) & USB_INTR_SUSPEND)) { - DEBUG("USB suspend\n"); - dev->driver->suspend(&dev->gadget); - /* Host unloaded from us, can do something, such as flushing - the NAND block cache etc. */ - } - - jz_udc_set_index(dev, index); - - spin_unlock(&dev->lock); - - return IRQ_HANDLED; -} - - - -/*-------------------------------------------------------------------------*/ - -/* Common functions - Added by River */ -static struct jz4740_udc udc_dev; - -static inline struct jz4740_udc *gadget_to_udc(struct usb_gadget *gadget) -{ - return container_of(gadget, struct jz4740_udc, gadget); -} -/* End added */ - -static int jz4740_udc_get_frame(struct usb_gadget *_gadget) -{ - DEBUG("%s, %p\n", __FUNCTION__, _gadget); - return usb_readw(gadget_to_udc(_gadget), JZ_REG_UDC_FRAME); -} - -static int jz4740_udc_wakeup(struct usb_gadget *_gadget) -{ - /* host may not have enabled remote wakeup */ - /*if ((UDCCS0 & UDCCS0_DRWF) == 0) - return -EHOSTUNREACH; - udc_set_mask_UDCCR(UDCCR_RSM); */ - return -ENOTSUPP; -} - -static int jz4740_udc_pullup(struct usb_gadget *_gadget, int on) -{ - struct jz4740_udc *udc = gadget_to_udc(_gadget); - unsigned long flags; - - local_irq_save(flags); - - if (on) { - udc->state = UDC_STATE_ENABLE; - udc_enable(udc); - } else { - udc->state = UDC_STATE_DISABLE; - udc_disable(udc); - } - - local_irq_restore(flags); - - return 0; -} - - -static const struct usb_gadget_ops jz4740_udc_ops = { - .get_frame = jz4740_udc_get_frame, - .wakeup = jz4740_udc_wakeup, - .pullup = jz4740_udc_pullup, - /* current versions must always be self-powered */ -}; - -static struct usb_ep_ops jz4740_ep_ops = { - .enable = jz4740_ep_enable, - .disable = jz4740_ep_disable, - - .alloc_request = jz4740_alloc_request, - .free_request = jz4740_free_request, - - .queue = jz4740_queue, - .dequeue = jz4740_dequeue, - - .set_halt = jz4740_set_halt, - .fifo_status = jz4740_fifo_status, - .fifo_flush = jz4740_fifo_flush, -}; - - -/*-------------------------------------------------------------------------*/ - -static struct jz4740_udc udc_dev = { - .usb_address = 0, - .gadget = { - .ops = &jz4740_udc_ops, - .ep0 = &udc_dev.ep[0].ep, - .name = "jz-udc", - .dev = { - .init_name = "gadget", - }, - }, - - /* control endpoint */ - .ep[0] = { - .ep = { - .name = "ep0", - .ops = &jz4740_ep_ops, - .maxpacket = EP0_MAXPACKETSIZE, - }, - .dev = &udc_dev, - - .bEndpointAddress = 0, - .bmAttributes = 0, - - .type = ep_control, - .fifo = JZ_REG_UDC_EP_FIFO(0), - .csr = JZ_REG_UDC_CSR0, - }, - - /* bulk out endpoint */ - .ep[1] = { - .ep = { - .name = "ep1out-bulk", - .ops = &jz4740_ep_ops, - .maxpacket = EPBULK_MAXPACKETSIZE, - }, - .dev = &udc_dev, - - .bEndpointAddress = 1, - .bmAttributes = USB_ENDPOINT_XFER_BULK, - - .type = ep_bulk_out, - .fifo = JZ_REG_UDC_EP_FIFO(1), - .csr = JZ_REG_UDC_OUTCSR, - }, - - /* bulk in endpoint */ - .ep[2] = { - .ep = { - .name = "ep1in-bulk", - .ops = &jz4740_ep_ops, - .maxpacket = EPBULK_MAXPACKETSIZE, - }, - .dev = &udc_dev, - - .bEndpointAddress = 1 | USB_DIR_IN, - .bmAttributes = USB_ENDPOINT_XFER_BULK, - - .type = ep_bulk_in, - .fifo = JZ_REG_UDC_EP_FIFO(1), - .csr = JZ_REG_UDC_INCSR, - }, - - /* interrupt in endpoint */ - .ep[3] = { - .ep = { - .name = "ep2in-int", - .ops = &jz4740_ep_ops, - .maxpacket = EPINTR_MAXPACKETSIZE, - }, - .dev = &udc_dev, - - .bEndpointAddress = 2 | USB_DIR_IN, - .bmAttributes = USB_ENDPOINT_XFER_INT, - - .type = ep_interrupt, - .fifo = JZ_REG_UDC_EP_FIFO(2), - .csr = JZ_REG_UDC_INCSR, - }, -}; - -static void gadget_release(struct device *_dev) -{ -} - - -static int jz4740_udc_probe(struct platform_device *pdev) -{ - struct jz4740_udc *dev = &udc_dev; - int ret; - - spin_lock_init(&dev->lock); - the_controller = dev; - - dev->dev = &pdev->dev; - dev_set_name(&dev->gadget.dev, "gadget"); - dev->gadget.dev.parent = &pdev->dev; - dev->gadget.dev.dma_mask = pdev->dev.dma_mask; - dev->gadget.dev.release = gadget_release; - - ret = device_register(&dev->gadget.dev); - if (ret) - return ret; - - dev->clk = clk_get(&pdev->dev, "udc"); - if (IS_ERR(dev->clk)) { - ret = PTR_ERR(dev->clk); - dev_err(&pdev->dev, "Failed to get udc clock: %d\n", ret); - goto err_device_unregister; - } - - platform_set_drvdata(pdev, dev); - - dev->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); - - if (!dev->mem) { - ret = -ENOENT; - dev_err(&pdev->dev, "Failed to get mmio memory resource\n"); - goto err_clk_put; - } - - dev->mem = request_mem_region(dev->mem->start, resource_size(dev->mem), pdev->name); - - if (!dev->mem) { - ret = -EBUSY; - dev_err(&pdev->dev, "Failed to request mmio memory region\n"); - goto err_device_unregister; - } - - dev->base = ioremap(dev->mem->start, resource_size(dev->mem)); - - if (!dev->base) { - ret = -EBUSY; - dev_err(&pdev->dev, "Failed to ioremap mmio memory\n"); - goto err_release_mem_region; - } - - dev->irq = platform_get_irq(pdev, 0); - - ret = request_irq(dev->irq, jz4740_udc_irq, IRQF_DISABLED, - pdev->name, dev); - if (ret) { - dev_err(&pdev->dev, "Failed to request irq: %d\n", ret); - goto err_iounmap; - } - - udc_disable(dev); - udc_reinit(dev); - - return 0; - -err_iounmap: - iounmap(dev->base); -err_release_mem_region: - release_mem_region(dev->mem->start, resource_size(dev->mem)); -err_clk_put: - clk_put(dev->clk); -err_device_unregister: - device_unregister(&dev->gadget.dev); - platform_set_drvdata(pdev, NULL); - - the_controller = 0; - - return ret; -} - -static int jz4740_udc_remove(struct platform_device *pdev) -{ - struct jz4740_udc *dev = platform_get_drvdata(pdev); - - if (dev->driver) - return -EBUSY; - - udc_disable(dev); - - free_irq(dev->irq, dev); - iounmap(dev->base); - release_mem_region(dev->mem->start, resource_size(dev->mem)); - clk_put(dev->clk); - - platform_set_drvdata(pdev, NULL); - device_unregister(&dev->gadget.dev); - the_controller = NULL; - - return 0; -} - -#ifdef CONFIG_PM - -static int jz4740_udc_suspend(struct device *dev) -{ - struct jz4740_udc *udc = dev_get_drvdata(dev); - - if (udc->state == UDC_STATE_ENABLE) - udc_disable(udc); - - return 0; -} - -static int jz4740_udc_resume(struct device *dev) -{ - struct jz4740_udc *udc = dev_get_drvdata(dev); - - if (udc->state == UDC_STATE_ENABLE) - udc_enable(udc); - - return 0; -} - -static struct dev_pm_ops jz4740_udc_pm_ops = { - .suspend = jz4740_udc_suspend, - .resume = jz4740_udc_resume, -}; - -#define JZ4740_UDC_PM_OPS (&jz4740_udc_pm_ops) - -#else - -#define JZ4740_UDC_PM_OPS NULL - -#endif - -static struct platform_driver udc_driver = { - .probe = jz4740_udc_probe, - .remove = jz4740_udc_remove, - .driver = { - .name = "jz-udc", - .owner = THIS_MODULE, - .pm = JZ4740_UDC_PM_OPS, - }, -}; - -/*-------------------------------------------------------------------------*/ - -static int __init udc_init (void) -{ - return platform_driver_register(&udc_driver); -} -module_init(udc_init); - -static void __exit udc_exit (void) -{ - platform_driver_unregister(&udc_driver); -} -module_exit(udc_exit); - -MODULE_DESCRIPTION("JZ4740 USB Device Controller"); -MODULE_AUTHOR("Wei Jianli <jlwei@ingenic.cn>"); -MODULE_LICENSE("GPL"); diff --git a/target/linux/xburst/files-2.6.32/drivers/usb/gadget/jz4740_udc.h b/target/linux/xburst/files-2.6.32/drivers/usb/gadget/jz4740_udc.h deleted file mode 100644 index ac1540f05f..0000000000 --- a/target/linux/xburst/files-2.6.32/drivers/usb/gadget/jz4740_udc.h +++ /dev/null @@ -1,99 +0,0 @@ -/* - * linux/drivers/usb/gadget/jz4740_udc.h - * - * Ingenic JZ4740 on-chip high speed USB device controller - * - * Copyright (C) 2006 Ingenic Semiconductor Inc. - * Author: <jlwei@ingenic.cn> - * - * 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. - */ - -#ifndef __USB_GADGET_JZ4740_H__ -#define __USB_GADGET_JZ4740_H__ - -/*-------------------------------------------------------------------------*/ - -// Max packet size -#define EP0_MAXPACKETSIZE 64 -#define EPBULK_MAXPACKETSIZE 512 -#define EPINTR_MAXPACKETSIZE 64 - -#define UDC_MAX_ENDPOINTS 4 - -/*-------------------------------------------------------------------------*/ - -typedef enum ep_type { - ep_control, ep_bulk_in, ep_bulk_out, ep_interrupt -} ep_type_t; - -struct jz4740_ep { - struct usb_ep ep; - struct jz4740_udc *dev; - - const struct usb_endpoint_descriptor *desc; - unsigned long pio_irqs; - - uint8_t stopped; - uint8_t bEndpointAddress; - uint8_t bmAttributes; - - ep_type_t type; - size_t fifo; - u32 csr; - - uint32_t reg_addr; - struct list_head queue; -}; - -struct jz4740_request { - struct usb_request req; - struct list_head queue; -}; - -enum ep0state { - WAIT_FOR_SETUP, /* between STATUS ack and SETUP report */ - DATA_STATE_XMIT, /* data tx stage */ - DATA_STATE_NEED_ZLP, /* data tx zlp stage */ - WAIT_FOR_OUT_STATUS, /* status stages */ - DATA_STATE_RECV, /* data rx stage */ -}; - -/* For function binding with UDC Disable - Added by River */ -typedef enum { - UDC_STATE_ENABLE = 0, - UDC_STATE_DISABLE, -}udc_state_t; - -struct jz4740_udc { - struct usb_gadget gadget; - struct usb_gadget_driver *driver; - struct device *dev; - spinlock_t lock; - - enum ep0state ep0state; - struct jz4740_ep ep[UDC_MAX_ENDPOINTS]; - - unsigned char usb_address; - - udc_state_t state; - - struct resource *mem; - void __iomem *base; - int irq; - uint32_t in_mask; - uint32_t out_mask; - - struct clk *clk; -}; - -extern struct jz4740_udc *the_controller; - -#define ep_is_in(EP) (((EP)->bEndpointAddress&USB_DIR_IN)==USB_DIR_IN) -#define ep_maxpacket(EP) ((EP)->ep.maxpacket) -#define ep_index(EP) ((EP)->bEndpointAddress&0xF) - -#endif /* __USB_GADGET_JZ4740_H__ */ |