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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/usb/host/r8a66597-hcd.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/usb/host/r8a66597-hcd.c')
-rw-r--r--drivers/usb/host/r8a66597-hcd.c2521
1 files changed, 2521 insertions, 0 deletions
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
new file mode 100644
index 000000000..abb88dd40
--- /dev/null
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -0,0 +1,2521 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * R8A66597 HCD (Host Controller Driver)
+ *
+ * Copyright (C) 2006-2007 Renesas Solutions Corp.
+ * Portions Copyright (C) 2004 Psion Teklogix (for NetBook PRO)
+ * Portions Copyright (C) 2004-2005 David Brownell
+ * Portions Copyright (C) 1999 Roman Weissgaerber
+ *
+ * Author : Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/timer.h>
+#include <linux/delay.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/mm.h>
+#include <linux/irq.h>
+#include <linux/slab.h>
+#include <asm/cacheflush.h>
+
+#include "r8a66597.h"
+
+MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Yoshihiro Shimoda");
+MODULE_ALIAS("platform:r8a66597_hcd");
+
+#define DRIVER_VERSION "2009-05-26"
+
+static const char hcd_name[] = "r8a66597_hcd";
+
+static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
+static int r8a66597_get_frame(struct usb_hcd *hcd);
+
+/* this function must be called with interrupt disabled */
+static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
+ unsigned long reg)
+{
+ u16 tmp;
+
+ tmp = r8a66597_read(r8a66597, INTENB0);
+ r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
+ r8a66597_bset(r8a66597, 1 << pipenum, reg);
+ r8a66597_write(r8a66597, tmp, INTENB0);
+}
+
+/* this function must be called with interrupt disabled */
+static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
+ unsigned long reg)
+{
+ u16 tmp;
+
+ tmp = r8a66597_read(r8a66597, INTENB0);
+ r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
+ r8a66597_bclr(r8a66597, 1 << pipenum, reg);
+ r8a66597_write(r8a66597, tmp, INTENB0);
+}
+
+static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
+ u16 usbspd, u8 upphub, u8 hubport, int port)
+{
+ u16 val;
+ unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
+
+ val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
+ r8a66597_write(r8a66597, val, devadd_reg);
+}
+
+static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
+{
+ u16 tmp;
+ int i = 0;
+
+ if (r8a66597->pdata->on_chip) {
+ clk_prepare_enable(r8a66597->clk);
+ do {
+ r8a66597_write(r8a66597, SCKE, SYSCFG0);
+ tmp = r8a66597_read(r8a66597, SYSCFG0);
+ if (i++ > 1000) {
+ printk(KERN_ERR "r8a66597: reg access fail.\n");
+ return -ENXIO;
+ }
+ } while ((tmp & SCKE) != SCKE);
+ r8a66597_write(r8a66597, 0x04, 0x02);
+ } else {
+ do {
+ r8a66597_write(r8a66597, USBE, SYSCFG0);
+ tmp = r8a66597_read(r8a66597, SYSCFG0);
+ if (i++ > 1000) {
+ printk(KERN_ERR "r8a66597: reg access fail.\n");
+ return -ENXIO;
+ }
+ } while ((tmp & USBE) != USBE);
+ r8a66597_bclr(r8a66597, USBE, SYSCFG0);
+ r8a66597_mdfy(r8a66597, get_xtal_from_pdata(r8a66597->pdata),
+ XTAL, SYSCFG0);
+
+ i = 0;
+ r8a66597_bset(r8a66597, XCKE, SYSCFG0);
+ do {
+ msleep(1);
+ tmp = r8a66597_read(r8a66597, SYSCFG0);
+ if (i++ > 500) {
+ printk(KERN_ERR "r8a66597: reg access fail.\n");
+ return -ENXIO;
+ }
+ } while ((tmp & SCKE) != SCKE);
+ }
+
+ return 0;
+}
+
+static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
+{
+ r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
+ udelay(1);
+
+ if (r8a66597->pdata->on_chip) {
+ clk_disable_unprepare(r8a66597->clk);
+ } else {
+ r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
+ r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
+ r8a66597_bclr(r8a66597, USBE, SYSCFG0);
+ }
+}
+
+static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port)
+{
+ u16 val;
+
+ val = port ? DRPD : DCFM | DRPD;
+ r8a66597_bset(r8a66597, val, get_syscfg_reg(port));
+ r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
+
+ r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port));
+ r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port));
+ r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
+}
+
+static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
+{
+ u16 val, tmp;
+
+ r8a66597_write(r8a66597, 0, get_intenb_reg(port));
+ r8a66597_write(r8a66597, 0, get_intsts_reg(port));
+
+ r8a66597_port_power(r8a66597, port, 0);
+
+ do {
+ tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
+ udelay(640);
+ } while (tmp == EDGESTS);
+
+ val = port ? DRPD : DCFM | DRPD;
+ r8a66597_bclr(r8a66597, val, get_syscfg_reg(port));
+ r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
+}
+
+static int enable_controller(struct r8a66597 *r8a66597)
+{
+ int ret, port;
+ u16 vif = r8a66597->pdata->vif ? LDRV : 0;
+ u16 irq_sense = r8a66597->irq_sense_low ? INTL : 0;
+ u16 endian = r8a66597->pdata->endian ? BIGEND : 0;
+
+ ret = r8a66597_clock_enable(r8a66597);
+ if (ret < 0)
+ return ret;
+
+ r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
+ r8a66597_bset(r8a66597, USBE, SYSCFG0);
+
+ r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
+ r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG);
+ r8a66597_bset(r8a66597, BRDY0, BRDYENB);
+ r8a66597_bset(r8a66597, BEMP0, BEMPENB);
+
+ r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
+ r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
+ r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
+ r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
+
+ r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1);
+
+ for (port = 0; port < r8a66597->max_root_hub; port++)
+ r8a66597_enable_port(r8a66597, port);
+
+ return 0;
+}
+
+static void disable_controller(struct r8a66597 *r8a66597)
+{
+ int port;
+
+ /* disable interrupts */
+ r8a66597_write(r8a66597, 0, INTENB0);
+ r8a66597_write(r8a66597, 0, INTENB1);
+ r8a66597_write(r8a66597, 0, BRDYENB);
+ r8a66597_write(r8a66597, 0, BEMPENB);
+ r8a66597_write(r8a66597, 0, NRDYENB);
+
+ /* clear status */
+ r8a66597_write(r8a66597, 0, BRDYSTS);
+ r8a66597_write(r8a66597, 0, NRDYSTS);
+ r8a66597_write(r8a66597, 0, BEMPSTS);
+
+ for (port = 0; port < r8a66597->max_root_hub; port++)
+ r8a66597_disable_port(r8a66597, port);
+
+ r8a66597_clock_disable(r8a66597);
+}
+
+static int get_parent_r8a66597_address(struct r8a66597 *r8a66597,
+ struct usb_device *udev)
+{
+ struct r8a66597_device *dev;
+
+ if (udev->parent && udev->parent->devnum != 1)
+ udev = udev->parent;
+
+ dev = dev_get_drvdata(&udev->dev);
+ if (dev)
+ return dev->address;
+ else
+ return 0;
+}
+
+static int is_child_device(char *devpath)
+{
+ return (devpath[2] ? 1 : 0);
+}
+
+static int is_hub_limit(char *devpath)
+{
+ return ((strlen(devpath) >= 4) ? 1 : 0);
+}
+
+static void get_port_number(struct r8a66597 *r8a66597,
+ char *devpath, u16 *root_port, u16 *hub_port)
+{
+ if (root_port) {
+ *root_port = (devpath[0] & 0x0F) - 1;
+ if (*root_port >= r8a66597->max_root_hub)
+ printk(KERN_ERR "r8a66597: Illegal root port number.\n");
+ }
+ if (hub_port)
+ *hub_port = devpath[2] & 0x0F;
+}
+
+static u16 get_r8a66597_usb_speed(enum usb_device_speed speed)
+{
+ u16 usbspd = 0;
+
+ switch (speed) {
+ case USB_SPEED_LOW:
+ usbspd = LSMODE;
+ break;
+ case USB_SPEED_FULL:
+ usbspd = FSMODE;
+ break;
+ case USB_SPEED_HIGH:
+ usbspd = HSMODE;
+ break;
+ default:
+ printk(KERN_ERR "r8a66597: unknown speed\n");
+ break;
+ }
+
+ return usbspd;
+}
+
+static void set_child_connect_map(struct r8a66597 *r8a66597, int address)
+{
+ int idx;
+
+ idx = address / 32;
+ r8a66597->child_connect_map[idx] |= 1 << (address % 32);
+}
+
+static void put_child_connect_map(struct r8a66597 *r8a66597, int address)
+{
+ int idx;
+
+ idx = address / 32;
+ r8a66597->child_connect_map[idx] &= ~(1 << (address % 32));
+}
+
+static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch)
+{
+ u16 pipenum = pipe->info.pipenum;
+ const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO};
+ const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL};
+ const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR};
+
+ if (dma_ch > R8A66597_PIPE_NO_DMA) /* dma fifo not use? */
+ dma_ch = R8A66597_PIPE_NO_DMA;
+
+ pipe->fifoaddr = fifoaddr[dma_ch];
+ pipe->fifosel = fifosel[dma_ch];
+ pipe->fifoctr = fifoctr[dma_ch];
+
+ if (pipenum == 0)
+ pipe->pipectr = DCPCTR;
+ else
+ pipe->pipectr = get_pipectr_addr(pipenum);
+
+ if (check_bulk_or_isoc(pipenum)) {
+ pipe->pipetre = get_pipetre_addr(pipenum);
+ pipe->pipetrn = get_pipetrn_addr(pipenum);
+ } else {
+ pipe->pipetre = 0;
+ pipe->pipetrn = 0;
+ }
+}
+
+static struct r8a66597_device *
+get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb)
+{
+ if (usb_pipedevice(urb->pipe) == 0)
+ return &r8a66597->device0;
+
+ return dev_get_drvdata(&urb->dev->dev);
+}
+
+static int make_r8a66597_device(struct r8a66597 *r8a66597,
+ struct urb *urb, u8 addr)
+{
+ struct r8a66597_device *dev;
+ int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */
+
+ dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC);
+ if (dev == NULL)
+ return -ENOMEM;
+
+ dev_set_drvdata(&urb->dev->dev, dev);
+ dev->udev = urb->dev;
+ dev->address = addr;
+ dev->usb_address = usb_address;
+ dev->state = USB_STATE_ADDRESS;
+ dev->ep_in_toggle = 0;
+ dev->ep_out_toggle = 0;
+ INIT_LIST_HEAD(&dev->device_list);
+ list_add_tail(&dev->device_list, &r8a66597->child_device);
+
+ get_port_number(r8a66597, urb->dev->devpath,
+ &dev->root_port, &dev->hub_port);
+ if (!is_child_device(urb->dev->devpath))
+ r8a66597->root_hub[dev->root_port].dev = dev;
+
+ set_devadd_reg(r8a66597, dev->address,
+ get_r8a66597_usb_speed(urb->dev->speed),
+ get_parent_r8a66597_address(r8a66597, urb->dev),
+ dev->hub_port, dev->root_port);
+
+ return 0;
+}
+
+/* this function must be called with interrupt disabled */
+static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb)
+{
+ u8 addr; /* R8A66597's address */
+ struct r8a66597_device *dev;
+
+ if (is_hub_limit(urb->dev->devpath)) {
+ dev_err(&urb->dev->dev, "External hub limit reached.\n");
+ return 0;
+ }
+
+ dev = get_urb_to_r8a66597_dev(r8a66597, urb);
+ if (dev && dev->state >= USB_STATE_ADDRESS)
+ return dev->address;
+
+ for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) {
+ if (r8a66597->address_map & (1 << addr))
+ continue;
+
+ dev_dbg(&urb->dev->dev, "alloc_address: r8a66597_addr=%d\n", addr);
+ r8a66597->address_map |= 1 << addr;
+
+ if (make_r8a66597_device(r8a66597, urb, addr) < 0)
+ return 0;
+
+ return addr;
+ }
+
+ dev_err(&urb->dev->dev,
+ "cannot communicate with a USB device more than 10.(%x)\n",
+ r8a66597->address_map);
+
+ return 0;
+}
+
+/* this function must be called with interrupt disabled */
+static void free_usb_address(struct r8a66597 *r8a66597,
+ struct r8a66597_device *dev, int reset)
+{
+ int port;
+
+ if (!dev)
+ return;
+
+ dev_dbg(&dev->udev->dev, "free_addr: addr=%d\n", dev->address);
+
+ dev->state = USB_STATE_DEFAULT;
+ r8a66597->address_map &= ~(1 << dev->address);
+ dev->address = 0;
+ /*
+ * Only when resetting USB, it is necessary to erase drvdata. When
+ * a usb device with usb hub is disconnect, "dev->udev" is already
+ * freed on usb_desconnect(). So we cannot access the data.
+ */
+ if (reset)
+ dev_set_drvdata(&dev->udev->dev, NULL);
+ list_del(&dev->device_list);
+ kfree(dev);
+
+ for (port = 0; port < r8a66597->max_root_hub; port++) {
+ if (r8a66597->root_hub[port].dev == dev) {
+ r8a66597->root_hub[port].dev = NULL;
+ break;
+ }
+ }
+}
+
+static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
+ u16 mask, u16 loop)
+{
+ u16 tmp;
+ int i = 0;
+
+ do {
+ tmp = r8a66597_read(r8a66597, reg);
+ if (i++ > 1000000) {
+ printk(KERN_ERR "r8a66597: register%lx, loop %x "
+ "is timeout\n", reg, loop);
+ break;
+ }
+ ndelay(1);
+ } while ((tmp & mask) != loop);
+}
+
+/* this function must be called with interrupt disabled */
+static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
+{
+ u16 tmp;
+
+ tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
+ if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */
+ r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
+ r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr);
+}
+
+/* this function must be called with interrupt disabled */
+static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
+{
+ u16 tmp;
+
+ tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
+ if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */
+ r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr);
+ r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
+ r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0);
+}
+
+/* this function must be called with interrupt disabled */
+static void clear_all_buffer(struct r8a66597 *r8a66597,
+ struct r8a66597_pipe *pipe)
+{
+ if (!pipe || pipe->info.pipenum == 0)
+ return;
+
+ pipe_stop(r8a66597, pipe);
+ r8a66597_bset(r8a66597, ACLRM, pipe->pipectr);
+ r8a66597_read(r8a66597, pipe->pipectr);
+ r8a66597_read(r8a66597, pipe->pipectr);
+ r8a66597_read(r8a66597, pipe->pipectr);
+ r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr);
+}
+
+/* this function must be called with interrupt disabled */
+static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597,
+ struct r8a66597_pipe *pipe, int toggle)
+{
+ if (toggle)
+ r8a66597_bset(r8a66597, SQSET, pipe->pipectr);
+ else
+ r8a66597_bset(r8a66597, SQCLR, pipe->pipectr);
+}
+
+static inline unsigned short mbw_value(struct r8a66597 *r8a66597)
+{
+ if (r8a66597->pdata->on_chip)
+ return MBW_32;
+ else
+ return MBW_16;
+}
+
+/* this function must be called with interrupt disabled */
+static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum)
+{
+ unsigned short mbw = mbw_value(r8a66597);
+
+ r8a66597_mdfy(r8a66597, mbw | pipenum, mbw | CURPIPE, CFIFOSEL);
+ r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
+}
+
+/* this function must be called with interrupt disabled */
+static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597,
+ struct r8a66597_pipe *pipe)
+{
+ unsigned short mbw = mbw_value(r8a66597);
+
+ cfifo_change(r8a66597, 0);
+ r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D0FIFOSEL);
+ r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D1FIFOSEL);
+
+ r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum, mbw | CURPIPE,
+ pipe->fifosel);
+ r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum);
+}
+
+static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep)
+{
+ struct r8a66597_pipe *pipe = hep->hcpriv;
+
+ if (usb_pipeendpoint(urb->pipe) == 0)
+ return 0;
+ else
+ return pipe->info.pipenum;
+}
+
+static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb)
+{
+ struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
+
+ return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address;
+}
+
+static unsigned short *get_toggle_pointer(struct r8a66597_device *dev,
+ int urb_pipe)
+{
+ if (!dev)
+ return NULL;
+
+ return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle;
+}
+
+/* this function must be called with interrupt disabled */
+static void pipe_toggle_set(struct r8a66597 *r8a66597,
+ struct r8a66597_pipe *pipe,
+ struct urb *urb, int set)
+{
+ struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
+ unsigned char endpoint = usb_pipeendpoint(urb->pipe);
+ unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
+
+ if (!toggle)
+ return;
+
+ if (set)
+ *toggle |= 1 << endpoint;
+ else
+ *toggle &= ~(1 << endpoint);
+}
+
+/* this function must be called with interrupt disabled */
+static void pipe_toggle_save(struct r8a66597 *r8a66597,
+ struct r8a66597_pipe *pipe,
+ struct urb *urb)
+{
+ if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON)
+ pipe_toggle_set(r8a66597, pipe, urb, 1);
+ else
+ pipe_toggle_set(r8a66597, pipe, urb, 0);
+}
+
+/* this function must be called with interrupt disabled */
+static void pipe_toggle_restore(struct r8a66597 *r8a66597,
+ struct r8a66597_pipe *pipe,
+ struct urb *urb)
+{
+ struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
+ unsigned char endpoint = usb_pipeendpoint(urb->pipe);
+ unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
+
+ if (!toggle)
+ return;
+
+ r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint));
+}
+
+/* this function must be called with interrupt disabled */
+static void pipe_buffer_setting(struct r8a66597 *r8a66597,
+ struct r8a66597_pipe_info *info)
+{
+ u16 val = 0;
+
+ if (info->pipenum == 0)
+ return;
+
+ r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
+ r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
+ r8a66597_write(r8a66597, info->pipenum, PIPESEL);
+ if (!info->dir_in)
+ val |= R8A66597_DIR;
+ if (info->type == R8A66597_BULK && info->dir_in)
+ val |= R8A66597_DBLB | R8A66597_SHTNAK;
+ val |= info->type | info->epnum;
+ r8a66597_write(r8a66597, val, PIPECFG);
+
+ r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum),
+ PIPEBUF);
+ r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket,
+ PIPEMAXP);
+ r8a66597_write(r8a66597, info->interval, PIPEPERI);
+}
+
+/* this function must be called with interrupt disabled */
+static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td)
+{
+ struct r8a66597_pipe_info *info;
+ struct urb *urb = td->urb;
+
+ if (td->pipenum > 0) {
+ info = &td->pipe->info;
+ cfifo_change(r8a66597, 0);
+ pipe_buffer_setting(r8a66597, info);
+
+ if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
+ usb_pipeout(urb->pipe)) &&
+ !usb_pipecontrol(urb->pipe)) {
+ r8a66597_pipe_toggle(r8a66597, td->pipe, 0);
+ pipe_toggle_set(r8a66597, td->pipe, urb, 0);
+ clear_all_buffer(r8a66597, td->pipe);
+ usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
+ usb_pipeout(urb->pipe), 1);
+ }
+ pipe_toggle_restore(r8a66597, td->pipe, urb);
+ }
+}
+
+/* this function must be called with interrupt disabled */
+static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
+ struct usb_endpoint_descriptor *ep)
+{
+ u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
+
+ memset(array, 0, sizeof(array));
+ switch (usb_endpoint_type(ep)) {
+ case USB_ENDPOINT_XFER_BULK:
+ if (usb_endpoint_dir_in(ep))
+ array[i++] = 4;
+ else {
+ array[i++] = 3;
+ array[i++] = 5;
+ }
+ break;
+ case USB_ENDPOINT_XFER_INT:
+ if (usb_endpoint_dir_in(ep)) {
+ array[i++] = 6;
+ array[i++] = 7;
+ array[i++] = 8;
+ } else
+ array[i++] = 9;
+ break;
+ case USB_ENDPOINT_XFER_ISOC:
+ if (usb_endpoint_dir_in(ep))
+ array[i++] = 2;
+ else
+ array[i++] = 1;
+ break;
+ default:
+ printk(KERN_ERR "r8a66597: Illegal type\n");
+ return 0;
+ }
+
+ i = 1;
+ min = array[0];
+ while (array[i] != 0) {
+ if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]])
+ min = array[i];
+ i++;
+ }
+
+ return min;
+}
+
+static u16 get_r8a66597_type(__u8 type)
+{
+ u16 r8a66597_type;
+
+ switch (type) {
+ case USB_ENDPOINT_XFER_BULK:
+ r8a66597_type = R8A66597_BULK;
+ break;
+ case USB_ENDPOINT_XFER_INT:
+ r8a66597_type = R8A66597_INT;
+ break;
+ case USB_ENDPOINT_XFER_ISOC:
+ r8a66597_type = R8A66597_ISO;
+ break;
+ default:
+ printk(KERN_ERR "r8a66597: Illegal type\n");
+ r8a66597_type = 0x0000;
+ break;
+ }
+
+ return r8a66597_type;
+}
+
+static u16 get_bufnum(u16 pipenum)
+{
+ u16 bufnum = 0;
+
+ if (pipenum == 0)
+ bufnum = 0;
+ else if (check_bulk_or_isoc(pipenum))
+ bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2;
+ else if (check_interrupt(pipenum))
+ bufnum = 4 + (pipenum - 6);
+ else
+ printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum);
+
+ return bufnum;
+}
+
+static u16 get_buf_bsize(u16 pipenum)
+{
+ u16 buf_bsize = 0;
+
+ if (pipenum == 0)
+ buf_bsize = 3;
+ else if (check_bulk_or_isoc(pipenum))
+ buf_bsize = R8A66597_BUF_BSIZE - 1;
+ else if (check_interrupt(pipenum))
+ buf_bsize = 0;
+ else
+ printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum);
+
+ return buf_bsize;
+}
+
+/* this function must be called with interrupt disabled */
+static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597,
+ struct r8a66597_device *dev,
+ struct r8a66597_pipe *pipe,
+ struct urb *urb)
+{
+ int i;
+ struct r8a66597_pipe_info *info = &pipe->info;
+ unsigned short mbw = mbw_value(r8a66597);
+
+ /* pipe dma is only for external controlles */
+ if (r8a66597->pdata->on_chip)
+ return;
+
+ if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) {
+ for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) {
+ if ((r8a66597->dma_map & (1 << i)) != 0)
+ continue;
+
+ dev_info(&dev->udev->dev,
+ "address %d, EndpointAddress 0x%02x use "
+ "DMA FIFO\n", usb_pipedevice(urb->pipe),
+ info->dir_in ?
+ USB_ENDPOINT_DIR_MASK + info->epnum
+ : info->epnum);
+
+ r8a66597->dma_map |= 1 << i;
+ dev->dma_map |= 1 << i;
+ set_pipe_reg_addr(pipe, i);
+
+ cfifo_change(r8a66597, 0);
+ r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum,
+ mbw | CURPIPE, pipe->fifosel);
+
+ r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE,
+ pipe->info.pipenum);
+ r8a66597_bset(r8a66597, BCLR, pipe->fifoctr);
+ break;
+ }
+ }
+}
+
+/* this function must be called with interrupt disabled */
+static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb,
+ struct usb_host_endpoint *hep,
+ struct r8a66597_pipe_info *info)
+{
+ struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
+ struct r8a66597_pipe *pipe = hep->hcpriv;
+
+ dev_dbg(&dev->udev->dev, "enable_pipe:\n");
+
+ pipe->info = *info;
+ set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA);
+ r8a66597->pipe_cnt[pipe->info.pipenum]++;
+ dev->pipe_cnt[pipe->info.pipenum]++;
+
+ enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb);
+}
+
+static void r8a66597_urb_done(struct r8a66597 *r8a66597, struct urb *urb,
+ int status)
+__releases(r8a66597->lock)
+__acquires(r8a66597->lock)
+{
+ if (usb_pipein(urb->pipe) && usb_pipetype(urb->pipe) != PIPE_CONTROL) {
+ void *ptr;
+
+ for (ptr = urb->transfer_buffer;
+ ptr < urb->transfer_buffer + urb->transfer_buffer_length;
+ ptr += PAGE_SIZE)
+ flush_dcache_page(virt_to_page(ptr));
+ }
+
+ usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
+ spin_unlock(&r8a66597->lock);
+ usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb, status);
+ spin_lock(&r8a66597->lock);
+}
+
+/* this function must be called with interrupt disabled */
+static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
+{
+ struct r8a66597_td *td, *next;
+ struct urb *urb;
+ struct list_head *list = &r8a66597->pipe_queue[pipenum];
+
+ if (list_empty(list))
+ return;
+
+ list_for_each_entry_safe(td, next, list, queue) {
+ if (td->address != address)
+ continue;
+
+ urb = td->urb;
+ list_del(&td->queue);
+ kfree(td);
+
+ if (urb)
+ r8a66597_urb_done(r8a66597, urb, -ENODEV);
+
+ break;
+ }
+}
+
+/* this function must be called with interrupt disabled */
+static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597,
+ struct r8a66597_device *dev)
+{
+ int check_ep0 = 0;
+ u16 pipenum;
+
+ if (!dev)
+ return;
+
+ for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
+ if (!dev->pipe_cnt[pipenum])
+ continue;
+
+ if (!check_ep0) {
+ check_ep0 = 1;
+ force_dequeue(r8a66597, 0, dev->address);
+ }
+
+ r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum];
+ dev->pipe_cnt[pipenum] = 0;
+ force_dequeue(r8a66597, pipenum, dev->address);
+ }
+
+ dev_dbg(&dev->udev->dev, "disable_pipe\n");
+
+ r8a66597->dma_map &= ~(dev->dma_map);
+ dev->dma_map = 0;
+}
+
+static u16 get_interval(struct urb *urb, __u8 interval)
+{
+ u16 time = 1;
+ int i;
+
+ if (urb->dev->speed == USB_SPEED_HIGH) {
+ if (interval > IITV)
+ time = IITV;
+ else
+ time = interval ? interval - 1 : 0;
+ } else {
+ if (interval > 128) {
+ time = IITV;
+ } else {
+ /* calculate the nearest value for PIPEPERI */
+ for (i = 0; i < 7; i++) {
+ if ((1 << i) < interval &&
+ (1 << (i + 1) > interval))
+ time = 1 << i;
+ }
+ }
+ }
+
+ return time;
+}
+
+static unsigned long get_timer_interval(struct urb *urb, __u8 interval)
+{
+ __u8 i;
+ unsigned long time = 1;
+
+ if (usb_pipeisoc(urb->pipe))
+ return 0;
+
+ if (get_r8a66597_usb_speed(urb->dev->speed) == HSMODE) {
+ for (i = 0; i < (interval - 1); i++)
+ time *= 2;
+ time = time * 125 / 1000; /* uSOF -> msec */
+ } else {
+ time = interval;
+ }
+
+ return time;
+}
+
+/* this function must be called with interrupt disabled */
+static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
+ struct usb_host_endpoint *hep,
+ struct usb_endpoint_descriptor *ep)
+{
+ struct r8a66597_pipe_info info;
+
+ info.pipenum = get_empty_pipenum(r8a66597, ep);
+ info.address = get_urb_to_r8a66597_addr(r8a66597, urb);
+ info.epnum = usb_endpoint_num(ep);
+ info.maxpacket = usb_endpoint_maxp(ep);
+ info.type = get_r8a66597_type(usb_endpoint_type(ep));
+ info.bufnum = get_bufnum(info.pipenum);
+ info.buf_bsize = get_buf_bsize(info.pipenum);
+ if (info.type == R8A66597_BULK) {
+ info.interval = 0;
+ info.timer_interval = 0;
+ } else {
+ info.interval = get_interval(urb, ep->bInterval);
+ info.timer_interval = get_timer_interval(urb, ep->bInterval);
+ }
+ if (usb_endpoint_dir_in(ep))
+ info.dir_in = 1;
+ else
+ info.dir_in = 0;
+
+ enable_r8a66597_pipe(r8a66597, urb, hep, &info);
+}
+
+static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
+{
+ struct r8a66597_device *dev;
+
+ dev = get_urb_to_r8a66597_dev(r8a66597, urb);
+ dev->state = USB_STATE_CONFIGURED;
+}
+
+static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb,
+ u16 pipenum)
+{
+ if (pipenum == 0 && usb_pipeout(urb->pipe))
+ enable_irq_empty(r8a66597, pipenum);
+ else
+ enable_irq_ready(r8a66597, pipenum);
+
+ if (!usb_pipeisoc(urb->pipe))
+ enable_irq_nrdy(r8a66597, pipenum);
+}
+
+static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
+{
+ disable_irq_ready(r8a66597, pipenum);
+ disable_irq_nrdy(r8a66597, pipenum);
+}
+
+static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597)
+{
+ mod_timer(&r8a66597->rh_timer,
+ jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME));
+}
+
+static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port,
+ int connect)
+{
+ struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
+
+ rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
+ rh->scount = R8A66597_MAX_SAMPLING;
+ if (connect)
+ rh->port |= USB_PORT_STAT_CONNECTION;
+ else
+ rh->port &= ~USB_PORT_STAT_CONNECTION;
+ rh->port |= USB_PORT_STAT_C_CONNECTION << 16;
+
+ r8a66597_root_hub_start_polling(r8a66597);
+}
+
+/* this function must be called with interrupt disabled */
+static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port,
+ u16 syssts)
+__releases(r8a66597->lock)
+__acquires(r8a66597->lock)
+{
+ if (syssts == SE0) {
+ r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
+ r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
+ } else {
+ if (syssts == FS_JSTS)
+ r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
+ else if (syssts == LS_JSTS)
+ r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
+
+ r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port));
+ r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
+
+ if (r8a66597->bus_suspended)
+ usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
+ }
+
+ spin_unlock(&r8a66597->lock);
+ usb_hcd_poll_rh_status(r8a66597_to_hcd(r8a66597));
+ spin_lock(&r8a66597->lock);
+}
+
+/* this function must be called with interrupt disabled */
+static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port)
+{
+ u16 speed = get_rh_usb_speed(r8a66597, port);
+ struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
+
+ rh->port &= ~(USB_PORT_STAT_HIGH_SPEED | USB_PORT_STAT_LOW_SPEED);
+ if (speed == HSMODE)
+ rh->port |= USB_PORT_STAT_HIGH_SPEED;
+ else if (speed == LSMODE)
+ rh->port |= USB_PORT_STAT_LOW_SPEED;
+
+ rh->port &= ~USB_PORT_STAT_RESET;
+ rh->port |= USB_PORT_STAT_ENABLE;
+}
+
+/* this function must be called with interrupt disabled */
+static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port)
+{
+ struct r8a66597_device *dev = r8a66597->root_hub[port].dev;
+
+ disable_r8a66597_pipe_all(r8a66597, dev);
+ free_usb_address(r8a66597, dev, 0);
+
+ start_root_hub_sampling(r8a66597, port, 0);
+}
+
+/* this function must be called with interrupt disabled */
+static void prepare_setup_packet(struct r8a66597 *r8a66597,
+ struct r8a66597_td *td)
+{
+ int i;
+ __le16 *p = (__le16 *)td->urb->setup_packet;
+ unsigned long setup_addr = USBREQ;
+
+ r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
+ DCPMAXP);
+ r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
+
+ for (i = 0; i < 4; i++) {
+ r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr);
+ setup_addr += 2;
+ }
+ r8a66597_write(r8a66597, SUREQ, DCPCTR);
+}
+
+/* this function must be called with interrupt disabled */
+static void prepare_packet_read(struct r8a66597 *r8a66597,
+ struct r8a66597_td *td)
+{
+ struct urb *urb = td->urb;
+
+ if (usb_pipecontrol(urb->pipe)) {
+ r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
+ r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
+ r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
+ if (urb->actual_length == 0) {
+ r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
+ r8a66597_write(r8a66597, BCLR, CFIFOCTR);
+ }
+ pipe_irq_disable(r8a66597, td->pipenum);
+ pipe_start(r8a66597, td->pipe);
+ pipe_irq_enable(r8a66597, urb, td->pipenum);
+ } else {
+ if (urb->actual_length == 0) {
+ pipe_irq_disable(r8a66597, td->pipenum);
+ pipe_setting(r8a66597, td);
+ pipe_stop(r8a66597, td->pipe);
+ r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
+
+ if (td->pipe->pipetre) {
+ r8a66597_write(r8a66597, TRCLR,
+ td->pipe->pipetre);
+ r8a66597_write(r8a66597,
+ DIV_ROUND_UP
+ (urb->transfer_buffer_length,
+ td->maxpacket),
+ td->pipe->pipetrn);
+ r8a66597_bset(r8a66597, TRENB,
+ td->pipe->pipetre);
+ }
+
+ pipe_start(r8a66597, td->pipe);
+ pipe_irq_enable(r8a66597, urb, td->pipenum);
+ }
+ }
+}
+
+/* this function must be called with interrupt disabled */
+static void prepare_packet_write(struct r8a66597 *r8a66597,
+ struct r8a66597_td *td)
+{
+ u16 tmp;
+ struct urb *urb = td->urb;
+
+ if (usb_pipecontrol(urb->pipe)) {
+ pipe_stop(r8a66597, td->pipe);
+ r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
+ r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
+ r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
+ if (urb->actual_length == 0) {
+ r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
+ r8a66597_write(r8a66597, BCLR, CFIFOCTR);
+ }
+ } else {
+ if (urb->actual_length == 0)
+ pipe_setting(r8a66597, td);
+ if (td->pipe->pipetre)
+ r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
+ }
+ r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
+
+ fifo_change_from_pipe(r8a66597, td->pipe);
+ tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
+ if (unlikely((tmp & FRDY) == 0))
+ pipe_irq_enable(r8a66597, urb, td->pipenum);
+ else
+ packet_write(r8a66597, td->pipenum);
+ pipe_start(r8a66597, td->pipe);
+}
+
+/* this function must be called with interrupt disabled */
+static void prepare_status_packet(struct r8a66597 *r8a66597,
+ struct r8a66597_td *td)
+{
+ struct urb *urb = td->urb;
+
+ r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
+ pipe_stop(r8a66597, td->pipe);
+
+ if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
+ r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
+ r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
+ r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
+ r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
+ r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR);
+ enable_irq_empty(r8a66597, 0);
+ } else {
+ r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
+ r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
+ r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
+ r8a66597_write(r8a66597, BCLR, CFIFOCTR);
+ enable_irq_ready(r8a66597, 0);
+ }
+ enable_irq_nrdy(r8a66597, 0);
+ pipe_start(r8a66597, td->pipe);
+}
+
+static int is_set_address(unsigned char *setup_packet)
+{
+ if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) &&
+ setup_packet[1] == USB_REQ_SET_ADDRESS)
+ return 1;
+ else
+ return 0;
+}
+
+/* this function must be called with interrupt disabled */
+static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
+{
+ BUG_ON(!td);
+
+ switch (td->type) {
+ case USB_PID_SETUP:
+ if (is_set_address(td->urb->setup_packet)) {
+ td->set_address = 1;
+ td->urb->setup_packet[2] = alloc_usb_address(r8a66597,
+ td->urb);
+ if (td->urb->setup_packet[2] == 0)
+ return -EPIPE;
+ }
+ prepare_setup_packet(r8a66597, td);
+ break;
+ case USB_PID_IN:
+ prepare_packet_read(r8a66597, td);
+ break;
+ case USB_PID_OUT:
+ prepare_packet_write(r8a66597, td);
+ break;
+ case USB_PID_ACK:
+ prepare_status_packet(r8a66597, td);
+ break;
+ default:
+ printk(KERN_ERR "r8a66597: invalid type.\n");
+ break;
+ }
+
+ return 0;
+}
+
+static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb)
+{
+ if (usb_pipeisoc(urb->pipe)) {
+ if (urb->number_of_packets == td->iso_cnt)
+ return 1;
+ }
+
+ /* control or bulk or interrupt */
+ if ((urb->transfer_buffer_length <= urb->actual_length) ||
+ (td->short_packet) || (td->zero_packet))
+ return 1;
+
+ return 0;
+}
+
+/* this function must be called with interrupt disabled */
+static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
+{
+ unsigned long time;
+
+ BUG_ON(!td);
+
+ if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) &&
+ !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) {
+ r8a66597->timeout_map |= 1 << td->pipenum;
+ switch (usb_pipetype(td->urb->pipe)) {
+ case PIPE_INTERRUPT:
+ case PIPE_ISOCHRONOUS:
+ time = 30;
+ break;
+ default:
+ time = 50;
+ break;
+ }
+
+ mod_timer(&r8a66597->timers[td->pipenum].td,
+ jiffies + msecs_to_jiffies(time));
+ }
+}
+
+/* this function must be called with interrupt disabled */
+static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
+ u16 pipenum, struct urb *urb, int status)
+__releases(r8a66597->lock) __acquires(r8a66597->lock)
+{
+ int restart = 0;
+ struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
+
+ r8a66597->timeout_map &= ~(1 << pipenum);
+
+ if (likely(td)) {
+ if (td->set_address && (status != 0 || urb->unlinked))
+ r8a66597->address_map &= ~(1 << urb->setup_packet[2]);
+
+ pipe_toggle_save(r8a66597, td->pipe, urb);
+ list_del(&td->queue);
+ kfree(td);
+ }
+
+ if (!list_empty(&r8a66597->pipe_queue[pipenum]))
+ restart = 1;
+
+ if (likely(urb)) {
+ if (usb_pipeisoc(urb->pipe))
+ urb->start_frame = r8a66597_get_frame(hcd);
+
+ r8a66597_urb_done(r8a66597, urb, status);
+ }
+
+ if (restart) {
+ td = r8a66597_get_td(r8a66597, pipenum);
+ if (unlikely(!td))
+ return;
+
+ start_transfer(r8a66597, td);
+ set_td_timer(r8a66597, td);
+ }
+}
+
+static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
+{
+ u16 tmp;
+ int rcv_len, bufsize, urb_len, size;
+ u16 *buf;
+ struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
+ struct urb *urb;
+ int finish = 0;
+ int status = 0;
+
+ if (unlikely(!td))
+ return;
+ urb = td->urb;
+
+ fifo_change_from_pipe(r8a66597, td->pipe);
+ tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
+ if (unlikely((tmp & FRDY) == 0)) {
+ pipe_stop(r8a66597, td->pipe);
+ pipe_irq_disable(r8a66597, pipenum);
+ printk(KERN_ERR "r8a66597: in fifo not ready (%d)\n", pipenum);
+ finish_request(r8a66597, td, pipenum, td->urb, -EPIPE);
+ return;
+ }
+
+ /* prepare parameters */
+ rcv_len = tmp & DTLN;
+ if (usb_pipeisoc(urb->pipe)) {
+ buf = (u16 *)(urb->transfer_buffer +
+ urb->iso_frame_desc[td->iso_cnt].offset);
+ urb_len = urb->iso_frame_desc[td->iso_cnt].length;
+ } else {
+ buf = (void *)urb->transfer_buffer + urb->actual_length;
+ urb_len = urb->transfer_buffer_length - urb->actual_length;
+ }
+ bufsize = min(urb_len, (int) td->maxpacket);
+ if (rcv_len <= bufsize) {
+ size = rcv_len;
+ } else {
+ size = bufsize;
+ status = -EOVERFLOW;
+ finish = 1;
+ }
+
+ /* update parameters */
+ urb->actual_length += size;
+ if (rcv_len == 0)
+ td->zero_packet = 1;
+ if (rcv_len < bufsize) {
+ td->short_packet = 1;
+ }
+ if (usb_pipeisoc(urb->pipe)) {
+ urb->iso_frame_desc[td->iso_cnt].actual_length = size;
+ urb->iso_frame_desc[td->iso_cnt].status = status;
+ td->iso_cnt++;
+ finish = 0;
+ }
+
+ /* check transfer finish */
+ if (finish || check_transfer_finish(td, urb)) {
+ pipe_stop(r8a66597, td->pipe);
+ pipe_irq_disable(r8a66597, pipenum);
+ finish = 1;
+ }
+
+ /* read fifo */
+ if (urb->transfer_buffer) {
+ if (size == 0)
+ r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr);
+ else
+ r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr,
+ buf, size);
+ }
+
+ if (finish && pipenum != 0)
+ finish_request(r8a66597, td, pipenum, urb, status);
+}
+
+static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
+{
+ u16 tmp;
+ int bufsize, size;
+ u16 *buf;
+ struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
+ struct urb *urb;
+
+ if (unlikely(!td))
+ return;
+ urb = td->urb;
+
+ fifo_change_from_pipe(r8a66597, td->pipe);
+ tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
+ if (unlikely((tmp & FRDY) == 0)) {
+ pipe_stop(r8a66597, td->pipe);
+ pipe_irq_disable(r8a66597, pipenum);
+ printk(KERN_ERR "r8a66597: out fifo not ready (%d)\n", pipenum);
+ finish_request(r8a66597, td, pipenum, urb, -EPIPE);
+ return;
+ }
+
+ /* prepare parameters */
+ bufsize = td->maxpacket;
+ if (usb_pipeisoc(urb->pipe)) {
+ buf = (u16 *)(urb->transfer_buffer +
+ urb->iso_frame_desc[td->iso_cnt].offset);
+ size = min(bufsize,
+ (int)urb->iso_frame_desc[td->iso_cnt].length);
+ } else {
+ buf = (u16 *)(urb->transfer_buffer + urb->actual_length);
+ size = min_t(u32, bufsize,
+ urb->transfer_buffer_length - urb->actual_length);
+ }
+
+ /* write fifo */
+ if (pipenum > 0)
+ r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
+ if (urb->transfer_buffer) {
+ r8a66597_write_fifo(r8a66597, td->pipe, buf, size);
+ if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
+ r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr);
+ }
+
+ /* update parameters */
+ urb->actual_length += size;
+ if (usb_pipeisoc(urb->pipe)) {
+ urb->iso_frame_desc[td->iso_cnt].actual_length = size;
+ urb->iso_frame_desc[td->iso_cnt].status = 0;
+ td->iso_cnt++;
+ }
+
+ /* check transfer finish */
+ if (check_transfer_finish(td, urb)) {
+ disable_irq_ready(r8a66597, pipenum);
+ enable_irq_empty(r8a66597, pipenum);
+ if (!usb_pipeisoc(urb->pipe))
+ enable_irq_nrdy(r8a66597, pipenum);
+ } else
+ pipe_irq_enable(r8a66597, urb, pipenum);
+}
+
+
+static void check_next_phase(struct r8a66597 *r8a66597, int status)
+{
+ struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0);
+ struct urb *urb;
+ u8 finish = 0;
+
+ if (unlikely(!td))
+ return;
+ urb = td->urb;
+
+ switch (td->type) {
+ case USB_PID_IN:
+ case USB_PID_OUT:
+ if (check_transfer_finish(td, urb))
+ td->type = USB_PID_ACK;
+ break;
+ case USB_PID_SETUP:
+ if (urb->transfer_buffer_length == urb->actual_length)
+ td->type = USB_PID_ACK;
+ else if (usb_pipeout(urb->pipe))
+ td->type = USB_PID_OUT;
+ else
+ td->type = USB_PID_IN;
+ break;
+ case USB_PID_ACK:
+ finish = 1;
+ break;
+ }
+
+ if (finish || status != 0 || urb->unlinked)
+ finish_request(r8a66597, td, 0, urb, status);
+ else
+ start_transfer(r8a66597, td);
+}
+
+static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
+{
+ struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
+
+ if (td) {
+ u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID;
+
+ if (pid == PID_NAK)
+ return -ECONNRESET;
+ else
+ return -EPIPE;
+ }
+ return 0;
+}
+
+static void irq_pipe_ready(struct r8a66597 *r8a66597)
+{
+ u16 check;
+ u16 pipenum;
+ u16 mask;
+ struct r8a66597_td *td;
+
+ mask = r8a66597_read(r8a66597, BRDYSTS)
+ & r8a66597_read(r8a66597, BRDYENB);
+ r8a66597_write(r8a66597, ~mask, BRDYSTS);
+ if (mask & BRDY0) {
+ td = r8a66597_get_td(r8a66597, 0);
+ if (td && td->type == USB_PID_IN)
+ packet_read(r8a66597, 0);
+ else
+ pipe_irq_disable(r8a66597, 0);
+ check_next_phase(r8a66597, 0);
+ }
+
+ for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
+ check = 1 << pipenum;
+ if (mask & check) {
+ td = r8a66597_get_td(r8a66597, pipenum);
+ if (unlikely(!td))
+ continue;
+
+ if (td->type == USB_PID_IN)
+ packet_read(r8a66597, pipenum);
+ else if (td->type == USB_PID_OUT)
+ packet_write(r8a66597, pipenum);
+ }
+ }
+}
+
+static void irq_pipe_empty(struct r8a66597 *r8a66597)
+{
+ u16 tmp;
+ u16 check;
+ u16 pipenum;
+ u16 mask;
+ struct r8a66597_td *td;
+
+ mask = r8a66597_read(r8a66597, BEMPSTS)
+ & r8a66597_read(r8a66597, BEMPENB);
+ r8a66597_write(r8a66597, ~mask, BEMPSTS);
+ if (mask & BEMP0) {
+ cfifo_change(r8a66597, 0);
+ td = r8a66597_get_td(r8a66597, 0);
+ if (td && td->type != USB_PID_OUT)
+ disable_irq_empty(r8a66597, 0);
+ check_next_phase(r8a66597, 0);
+ }
+
+ for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
+ check = 1 << pipenum;
+ if (mask & check) {
+ struct r8a66597_td *td;
+ td = r8a66597_get_td(r8a66597, pipenum);
+ if (unlikely(!td))
+ continue;
+
+ tmp = r8a66597_read(r8a66597, td->pipe->pipectr);
+ if ((tmp & INBUFM) == 0) {
+ disable_irq_empty(r8a66597, pipenum);
+ pipe_irq_disable(r8a66597, pipenum);
+ finish_request(r8a66597, td, pipenum, td->urb,
+ 0);
+ }
+ }
+ }
+}
+
+static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
+{
+ u16 check;
+ u16 pipenum;
+ u16 mask;
+ int status;
+
+ mask = r8a66597_read(r8a66597, NRDYSTS)
+ & r8a66597_read(r8a66597, NRDYENB);
+ r8a66597_write(r8a66597, ~mask, NRDYSTS);
+ if (mask & NRDY0) {
+ cfifo_change(r8a66597, 0);
+ status = get_urb_error(r8a66597, 0);
+ pipe_irq_disable(r8a66597, 0);
+ check_next_phase(r8a66597, status);
+ }
+
+ for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
+ check = 1 << pipenum;
+ if (mask & check) {
+ struct r8a66597_td *td;
+ td = r8a66597_get_td(r8a66597, pipenum);
+ if (unlikely(!td))
+ continue;
+
+ status = get_urb_error(r8a66597, pipenum);
+ pipe_irq_disable(r8a66597, pipenum);
+ pipe_stop(r8a66597, td->pipe);
+ finish_request(r8a66597, td, pipenum, td->urb, status);
+ }
+ }
+}
+
+static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
+{
+ struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
+ u16 intsts0, intsts1, intsts2;
+ u16 intenb0, intenb1, intenb2;
+ u16 mask0, mask1, mask2;
+ int status;
+
+ spin_lock(&r8a66597->lock);
+
+ intsts0 = r8a66597_read(r8a66597, INTSTS0);
+ intsts1 = r8a66597_read(r8a66597, INTSTS1);
+ intsts2 = r8a66597_read(r8a66597, INTSTS2);
+ intenb0 = r8a66597_read(r8a66597, INTENB0);
+ intenb1 = r8a66597_read(r8a66597, INTENB1);
+ intenb2 = r8a66597_read(r8a66597, INTENB2);
+
+ mask2 = intsts2 & intenb2;
+ mask1 = intsts1 & intenb1;
+ mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
+ if (mask2) {
+ if (mask2 & ATTCH) {
+ r8a66597_write(r8a66597, ~ATTCH, INTSTS2);
+ r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
+
+ /* start usb bus sampling */
+ start_root_hub_sampling(r8a66597, 1, 1);
+ }
+ if (mask2 & DTCH) {
+ r8a66597_write(r8a66597, ~DTCH, INTSTS2);
+ r8a66597_bclr(r8a66597, DTCHE, INTENB2);
+ r8a66597_usb_disconnect(r8a66597, 1);
+ }
+ if (mask2 & BCHG) {
+ r8a66597_write(r8a66597, ~BCHG, INTSTS2);
+ r8a66597_bclr(r8a66597, BCHGE, INTENB2);
+ usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
+ }
+ }
+
+ if (mask1) {
+ if (mask1 & ATTCH) {
+ r8a66597_write(r8a66597, ~ATTCH, INTSTS1);
+ r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
+
+ /* start usb bus sampling */
+ start_root_hub_sampling(r8a66597, 0, 1);
+ }
+ if (mask1 & DTCH) {
+ r8a66597_write(r8a66597, ~DTCH, INTSTS1);
+ r8a66597_bclr(r8a66597, DTCHE, INTENB1);
+ r8a66597_usb_disconnect(r8a66597, 0);
+ }
+ if (mask1 & BCHG) {
+ r8a66597_write(r8a66597, ~BCHG, INTSTS1);
+ r8a66597_bclr(r8a66597, BCHGE, INTENB1);
+ usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
+ }
+
+ if (mask1 & SIGN) {
+ r8a66597_write(r8a66597, ~SIGN, INTSTS1);
+ status = get_urb_error(r8a66597, 0);
+ check_next_phase(r8a66597, status);
+ }
+ if (mask1 & SACK) {
+ r8a66597_write(r8a66597, ~SACK, INTSTS1);
+ check_next_phase(r8a66597, 0);
+ }
+ }
+ if (mask0) {
+ if (mask0 & BRDY)
+ irq_pipe_ready(r8a66597);
+ if (mask0 & BEMP)
+ irq_pipe_empty(r8a66597);
+ if (mask0 & NRDY)
+ irq_pipe_nrdy(r8a66597);
+ }
+
+ spin_unlock(&r8a66597->lock);
+ return IRQ_HANDLED;
+}
+
+/* this function must be called with interrupt disabled */
+static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port)
+{
+ u16 tmp;
+ struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
+
+ if (rh->port & USB_PORT_STAT_RESET) {
+ unsigned long dvstctr_reg = get_dvstctr_reg(port);
+
+ tmp = r8a66597_read(r8a66597, dvstctr_reg);
+ if ((tmp & USBRST) == USBRST) {
+ r8a66597_mdfy(r8a66597, UACT, USBRST | UACT,
+ dvstctr_reg);
+ r8a66597_root_hub_start_polling(r8a66597);
+ } else
+ r8a66597_usb_connect(r8a66597, port);
+ }
+
+ if (!(rh->port & USB_PORT_STAT_CONNECTION)) {
+ r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
+ r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
+ }
+
+ if (rh->scount > 0) {
+ tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
+ if (tmp == rh->old_syssts) {
+ rh->scount--;
+ if (rh->scount == 0)
+ r8a66597_check_syssts(r8a66597, port, tmp);
+ else
+ r8a66597_root_hub_start_polling(r8a66597);
+ } else {
+ rh->scount = R8A66597_MAX_SAMPLING;
+ rh->old_syssts = tmp;
+ r8a66597_root_hub_start_polling(r8a66597);
+ }
+ }
+}
+
+static void r8a66597_interval_timer(struct timer_list *t)
+{
+ struct r8a66597_timers *timers = from_timer(timers, t, interval);
+ struct r8a66597 *r8a66597 = timers->r8a66597;
+ unsigned long flags;
+ u16 pipenum;
+ struct r8a66597_td *td;
+
+ spin_lock_irqsave(&r8a66597->lock, flags);
+
+ for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
+ if (!(r8a66597->interval_map & (1 << pipenum)))
+ continue;
+ if (timer_pending(&r8a66597->timers[pipenum].interval))
+ continue;
+
+ td = r8a66597_get_td(r8a66597, pipenum);
+ if (td)
+ start_transfer(r8a66597, td);
+ }
+
+ spin_unlock_irqrestore(&r8a66597->lock, flags);
+}
+
+static void r8a66597_td_timer(struct timer_list *t)
+{
+ struct r8a66597_timers *timers = from_timer(timers, t, td);
+ struct r8a66597 *r8a66597 = timers->r8a66597;
+ unsigned long flags;
+ u16 pipenum;
+ struct r8a66597_td *td, *new_td = NULL;
+ struct r8a66597_pipe *pipe;
+
+ spin_lock_irqsave(&r8a66597->lock, flags);
+ for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
+ if (!(r8a66597->timeout_map & (1 << pipenum)))
+ continue;
+ if (timer_pending(&r8a66597->timers[pipenum].td))
+ continue;
+
+ td = r8a66597_get_td(r8a66597, pipenum);
+ if (!td) {
+ r8a66597->timeout_map &= ~(1 << pipenum);
+ continue;
+ }
+
+ if (td->urb->actual_length) {
+ set_td_timer(r8a66597, td);
+ break;
+ }
+
+ pipe = td->pipe;
+ pipe_stop(r8a66597, pipe);
+
+ /* Select a different address or endpoint */
+ new_td = td;
+ do {
+ list_move_tail(&new_td->queue,
+ &r8a66597->pipe_queue[pipenum]);
+ new_td = r8a66597_get_td(r8a66597, pipenum);
+ if (!new_td) {
+ new_td = td;
+ break;
+ }
+ } while (td != new_td && td->address == new_td->address &&
+ td->pipe->info.epnum == new_td->pipe->info.epnum);
+
+ start_transfer(r8a66597, new_td);
+
+ if (td == new_td)
+ r8a66597->timeout_map &= ~(1 << pipenum);
+ else
+ set_td_timer(r8a66597, new_td);
+ break;
+ }
+ spin_unlock_irqrestore(&r8a66597->lock, flags);
+}
+
+static void r8a66597_timer(struct timer_list *t)
+{
+ struct r8a66597 *r8a66597 = from_timer(r8a66597, t, rh_timer);
+ unsigned long flags;
+ int port;
+
+ spin_lock_irqsave(&r8a66597->lock, flags);
+
+ for (port = 0; port < r8a66597->max_root_hub; port++)
+ r8a66597_root_hub_control(r8a66597, port);
+
+ spin_unlock_irqrestore(&r8a66597->lock, flags);
+}
+
+static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
+{
+ struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
+
+ if (dev && dev->address && dev->state != USB_STATE_CONFIGURED &&
+ (urb->dev->state == USB_STATE_CONFIGURED))
+ return 1;
+ else
+ return 0;
+}
+
+static int r8a66597_start(struct usb_hcd *hcd)
+{
+ struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
+
+ hcd->state = HC_STATE_RUNNING;
+ return enable_controller(r8a66597);
+}
+
+static void r8a66597_stop(struct usb_hcd *hcd)
+{
+ struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
+
+ disable_controller(r8a66597);
+}
+
+static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
+{
+ unsigned int usb_address = usb_pipedevice(urb->pipe);
+ u16 root_port, hub_port;
+
+ if (usb_address == 0) {
+ get_port_number(r8a66597, urb->dev->devpath,
+ &root_port, &hub_port);
+ set_devadd_reg(r8a66597, 0,
+ get_r8a66597_usb_speed(urb->dev->speed),
+ get_parent_r8a66597_address(r8a66597, urb->dev),
+ hub_port, root_port);
+ }
+}
+
+static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
+ struct urb *urb,
+ struct usb_host_endpoint *hep)
+{
+ struct r8a66597_td *td;
+ u16 pipenum;
+
+ td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC);
+ if (td == NULL)
+ return NULL;
+
+ pipenum = r8a66597_get_pipenum(urb, hep);
+ td->pipenum = pipenum;
+ td->pipe = hep->hcpriv;
+ td->urb = urb;
+ td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
+ td->maxpacket = usb_maxpacket(urb->dev, urb->pipe);
+ if (usb_pipecontrol(urb->pipe))
+ td->type = USB_PID_SETUP;
+ else if (usb_pipein(urb->pipe))
+ td->type = USB_PID_IN;
+ else
+ td->type = USB_PID_OUT;
+ INIT_LIST_HEAD(&td->queue);
+
+ return td;
+}
+
+static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
+ struct urb *urb,
+ gfp_t mem_flags)
+{
+ struct usb_host_endpoint *hep = urb->ep;
+ struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
+ struct r8a66597_td *td = NULL;
+ int ret, request = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&r8a66597->lock, flags);
+ if (!get_urb_to_r8a66597_dev(r8a66597, urb)) {
+ ret = -ENODEV;
+ goto error_not_linked;
+ }
+
+ ret = usb_hcd_link_urb_to_ep(hcd, urb);
+ if (ret)
+ goto error_not_linked;
+
+ if (!hep->hcpriv) {
+ hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe),
+ GFP_ATOMIC);
+ if (!hep->hcpriv) {
+ ret = -ENOMEM;
+ goto error;
+ }
+ set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA);
+ if (usb_pipeendpoint(urb->pipe))
+ init_pipe_info(r8a66597, urb, hep, &hep->desc);
+ }
+
+ if (unlikely(check_pipe_config(r8a66597, urb)))
+ init_pipe_config(r8a66597, urb);
+
+ set_address_zero(r8a66597, urb);
+ td = r8a66597_make_td(r8a66597, urb, hep);
+ if (td == NULL) {
+ ret = -ENOMEM;
+ goto error;
+ }
+ if (list_empty(&r8a66597->pipe_queue[td->pipenum]))
+ request = 1;
+ list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]);
+ urb->hcpriv = td;
+
+ if (request) {
+ if (td->pipe->info.timer_interval) {
+ r8a66597->interval_map |= 1 << td->pipenum;
+ mod_timer(&r8a66597->timers[td->pipenum].interval,
+ jiffies + msecs_to_jiffies(
+ td->pipe->info.timer_interval));
+ } else {
+ ret = start_transfer(r8a66597, td);
+ if (ret < 0) {
+ list_del(&td->queue);
+ kfree(td);
+ }
+ }
+ } else
+ set_td_timer(r8a66597, td);
+
+error:
+ if (ret)
+ usb_hcd_unlink_urb_from_ep(hcd, urb);
+error_not_linked:
+ spin_unlock_irqrestore(&r8a66597->lock, flags);
+ return ret;
+}
+
+static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
+ int status)
+{
+ struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
+ struct r8a66597_td *td;
+ unsigned long flags;
+ int rc;
+
+ spin_lock_irqsave(&r8a66597->lock, flags);
+ rc = usb_hcd_check_unlink_urb(hcd, urb, status);
+ if (rc)
+ goto done;
+
+ if (urb->hcpriv) {
+ td = urb->hcpriv;
+ pipe_stop(r8a66597, td->pipe);
+ pipe_irq_disable(r8a66597, td->pipenum);
+ disable_irq_empty(r8a66597, td->pipenum);
+ finish_request(r8a66597, td, td->pipenum, urb, status);
+ }
+ done:
+ spin_unlock_irqrestore(&r8a66597->lock, flags);
+ return rc;
+}
+
+static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
+ struct usb_host_endpoint *hep)
+__acquires(r8a66597->lock)
+__releases(r8a66597->lock)
+{
+ struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
+ struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv;
+ struct r8a66597_td *td;
+ struct urb *urb = NULL;
+ u16 pipenum;
+ unsigned long flags;
+
+ if (pipe == NULL)
+ return;
+ pipenum = pipe->info.pipenum;
+
+ spin_lock_irqsave(&r8a66597->lock, flags);
+ if (pipenum == 0) {
+ kfree(hep->hcpriv);
+ hep->hcpriv = NULL;
+ spin_unlock_irqrestore(&r8a66597->lock, flags);
+ return;
+ }
+
+ pipe_stop(r8a66597, pipe);
+ pipe_irq_disable(r8a66597, pipenum);
+ disable_irq_empty(r8a66597, pipenum);
+ td = r8a66597_get_td(r8a66597, pipenum);
+ if (td)
+ urb = td->urb;
+ finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN);
+ kfree(hep->hcpriv);
+ hep->hcpriv = NULL;
+ spin_unlock_irqrestore(&r8a66597->lock, flags);
+}
+
+static int r8a66597_get_frame(struct usb_hcd *hcd)
+{
+ struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
+ return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
+}
+
+static void collect_usb_address_map(struct usb_device *udev, unsigned long *map)
+{
+ int chix;
+ struct usb_device *childdev;
+
+ if (udev->state == USB_STATE_CONFIGURED &&
+ udev->parent && udev->parent->devnum > 1 &&
+ udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB)
+ map[udev->devnum/32] |= (1 << (udev->devnum % 32));
+
+ usb_hub_for_each_child(udev, chix, childdev)
+ collect_usb_address_map(childdev, map);
+}
+
+/* this function must be called with interrupt disabled */
+static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597,
+ int addr)
+{
+ struct r8a66597_device *dev;
+ struct list_head *list = &r8a66597->child_device;
+
+ list_for_each_entry(dev, list, device_list) {
+ if (dev->usb_address != addr)
+ continue;
+
+ return dev;
+ }
+
+ printk(KERN_ERR "r8a66597: get_r8a66597_device fail.(%d)\n", addr);
+ return NULL;
+}
+
+static void update_usb_address_map(struct r8a66597 *r8a66597,
+ struct usb_device *root_hub,
+ unsigned long *map)
+{
+ int i, j, addr;
+ unsigned long diff;
+ unsigned long flags;
+
+ for (i = 0; i < 4; i++) {
+ diff = r8a66597->child_connect_map[i] ^ map[i];
+ if (!diff)
+ continue;
+
+ for (j = 0; j < 32; j++) {
+ if (!(diff & (1 << j)))
+ continue;
+
+ addr = i * 32 + j;
+ if (map[i] & (1 << j))
+ set_child_connect_map(r8a66597, addr);
+ else {
+ struct r8a66597_device *dev;
+
+ spin_lock_irqsave(&r8a66597->lock, flags);
+ dev = get_r8a66597_device(r8a66597, addr);
+ disable_r8a66597_pipe_all(r8a66597, dev);
+ free_usb_address(r8a66597, dev, 0);
+ put_child_connect_map(r8a66597, addr);
+ spin_unlock_irqrestore(&r8a66597->lock, flags);
+ }
+ }
+ }
+}
+
+static void r8a66597_check_detect_child(struct r8a66597 *r8a66597,
+ struct usb_hcd *hcd)
+{
+ struct usb_bus *bus;
+ unsigned long now_map[4];
+
+ memset(now_map, 0, sizeof(now_map));
+
+ mutex_lock(&usb_bus_idr_lock);
+ bus = idr_find(&usb_bus_idr, hcd->self.busnum);
+ if (bus && bus->root_hub) {
+ collect_usb_address_map(bus->root_hub, now_map);
+ update_usb_address_map(r8a66597, bus->root_hub, now_map);
+ }
+ mutex_unlock(&usb_bus_idr_lock);
+}
+
+static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf)
+{
+ struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
+ unsigned long flags;
+ int i;
+
+ r8a66597_check_detect_child(r8a66597, hcd);
+
+ spin_lock_irqsave(&r8a66597->lock, flags);
+
+ *buf = 0; /* initialize (no change) */
+
+ for (i = 0; i < r8a66597->max_root_hub; i++) {
+ if (r8a66597->root_hub[i].port & 0xffff0000)
+ *buf |= 1 << (i + 1);
+ }
+
+ spin_unlock_irqrestore(&r8a66597->lock, flags);
+
+ return (*buf != 0);
+}
+
+static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597,
+ struct usb_hub_descriptor *desc)
+{
+ desc->bDescriptorType = USB_DT_HUB;
+ desc->bHubContrCurrent = 0;
+ desc->bNbrPorts = r8a66597->max_root_hub;
+ desc->bDescLength = 9;
+ desc->bPwrOn2PwrGood = 0;
+ desc->wHubCharacteristics =
+ cpu_to_le16(HUB_CHAR_INDV_PORT_LPSM | HUB_CHAR_NO_OCPM);
+ desc->u.hs.DeviceRemovable[0] =
+ ((1 << r8a66597->max_root_hub) - 1) << 1;
+ desc->u.hs.DeviceRemovable[1] = ~0;
+}
+
+static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
+ u16 wIndex, char *buf, u16 wLength)
+{
+ struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
+ int ret;
+ int port = (wIndex & 0x00FF) - 1;
+ struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
+ unsigned long flags;
+
+ ret = 0;
+
+ spin_lock_irqsave(&r8a66597->lock, flags);
+ switch (typeReq) {
+ case ClearHubFeature:
+ case SetHubFeature:
+ switch (wValue) {
+ case C_HUB_OVER_CURRENT:
+ case C_HUB_LOCAL_POWER:
+ break;
+ default:
+ goto error;
+ }
+ break;
+ case ClearPortFeature:
+ if (wIndex > r8a66597->max_root_hub)
+ goto error;
+ if (wLength != 0)
+ goto error;
+
+ switch (wValue) {
+ case USB_PORT_FEAT_ENABLE:
+ rh->port &= ~USB_PORT_STAT_POWER;
+ break;
+ case USB_PORT_FEAT_SUSPEND:
+ break;
+ case USB_PORT_FEAT_POWER:
+ r8a66597_port_power(r8a66597, port, 0);
+ break;
+ case USB_PORT_FEAT_C_ENABLE:
+ case USB_PORT_FEAT_C_SUSPEND:
+ case USB_PORT_FEAT_C_CONNECTION:
+ case USB_PORT_FEAT_C_OVER_CURRENT:
+ case USB_PORT_FEAT_C_RESET:
+ break;
+ default:
+ goto error;
+ }
+ rh->port &= ~(1 << wValue);
+ break;
+ case GetHubDescriptor:
+ r8a66597_hub_descriptor(r8a66597,
+ (struct usb_hub_descriptor *)buf);
+ break;
+ case GetHubStatus:
+ *buf = 0x00;
+ break;
+ case GetPortStatus:
+ if (wIndex > r8a66597->max_root_hub)
+ goto error;
+ *(__le32 *)buf = cpu_to_le32(rh->port);
+ break;
+ case SetPortFeature:
+ if (wIndex > r8a66597->max_root_hub)
+ goto error;
+ if (wLength != 0)
+ goto error;
+
+ switch (wValue) {
+ case USB_PORT_FEAT_SUSPEND:
+ break;
+ case USB_PORT_FEAT_POWER:
+ r8a66597_port_power(r8a66597, port, 1);
+ rh->port |= USB_PORT_STAT_POWER;
+ break;
+ case USB_PORT_FEAT_RESET: {
+ struct r8a66597_device *dev = rh->dev;
+
+ rh->port |= USB_PORT_STAT_RESET;
+
+ disable_r8a66597_pipe_all(r8a66597, dev);
+ free_usb_address(r8a66597, dev, 1);
+
+ r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT,
+ get_dvstctr_reg(port));
+ mod_timer(&r8a66597->rh_timer,
+ jiffies + msecs_to_jiffies(50));
+ }
+ break;
+ default:
+ goto error;
+ }
+ rh->port |= 1 << wValue;
+ break;
+ default:
+error:
+ ret = -EPIPE;
+ break;
+ }
+
+ spin_unlock_irqrestore(&r8a66597->lock, flags);
+ return ret;
+}
+
+#if defined(CONFIG_PM)
+static int r8a66597_bus_suspend(struct usb_hcd *hcd)
+{
+ struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
+ int port;
+
+ dev_dbg(&r8a66597->device0.udev->dev, "%s\n", __func__);
+
+ for (port = 0; port < r8a66597->max_root_hub; port++) {
+ struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
+ unsigned long dvstctr_reg = get_dvstctr_reg(port);
+
+ if (!(rh->port & USB_PORT_STAT_ENABLE))
+ continue;
+
+ dev_dbg(&rh->dev->udev->dev, "suspend port = %d\n", port);
+ r8a66597_bclr(r8a66597, UACT, dvstctr_reg); /* suspend */
+ rh->port |= USB_PORT_STAT_SUSPEND;
+
+ if (rh->dev->udev->do_remote_wakeup) {
+ msleep(3); /* waiting last SOF */
+ r8a66597_bset(r8a66597, RWUPE, dvstctr_reg);
+ r8a66597_write(r8a66597, ~BCHG, get_intsts_reg(port));
+ r8a66597_bset(r8a66597, BCHGE, get_intenb_reg(port));
+ }
+ }
+
+ r8a66597->bus_suspended = 1;
+
+ return 0;
+}
+
+static int r8a66597_bus_resume(struct usb_hcd *hcd)
+{
+ struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
+ int port;
+
+ dev_dbg(&r8a66597->device0.udev->dev, "%s\n", __func__);
+
+ for (port = 0; port < r8a66597->max_root_hub; port++) {
+ struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
+ unsigned long dvstctr_reg = get_dvstctr_reg(port);
+
+ if (!(rh->port & USB_PORT_STAT_SUSPEND))
+ continue;
+
+ dev_dbg(&rh->dev->udev->dev, "resume port = %d\n", port);
+ rh->port &= ~USB_PORT_STAT_SUSPEND;
+ rh->port |= USB_PORT_STAT_C_SUSPEND << 16;
+ r8a66597_mdfy(r8a66597, RESUME, RESUME | UACT, dvstctr_reg);
+ msleep(USB_RESUME_TIMEOUT);
+ r8a66597_mdfy(r8a66597, UACT, RESUME | UACT, dvstctr_reg);
+ }
+
+ return 0;
+
+}
+#else
+#define r8a66597_bus_suspend NULL
+#define r8a66597_bus_resume NULL
+#endif
+
+static const struct hc_driver r8a66597_hc_driver = {
+ .description = hcd_name,
+ .hcd_priv_size = sizeof(struct r8a66597),
+ .irq = r8a66597_irq,
+
+ /*
+ * generic hardware linkage
+ */
+ .flags = HCD_USB2,
+
+ .start = r8a66597_start,
+ .stop = r8a66597_stop,
+
+ /*
+ * managing i/o requests and associated device resources
+ */
+ .urb_enqueue = r8a66597_urb_enqueue,
+ .urb_dequeue = r8a66597_urb_dequeue,
+ .endpoint_disable = r8a66597_endpoint_disable,
+
+ /*
+ * periodic schedule support
+ */
+ .get_frame_number = r8a66597_get_frame,
+
+ /*
+ * root hub support
+ */
+ .hub_status_data = r8a66597_hub_status_data,
+ .hub_control = r8a66597_hub_control,
+ .bus_suspend = r8a66597_bus_suspend,
+ .bus_resume = r8a66597_bus_resume,
+};
+
+#if defined(CONFIG_PM)
+static int r8a66597_suspend(struct device *dev)
+{
+ struct r8a66597 *r8a66597 = dev_get_drvdata(dev);
+ int port;
+
+ dev_dbg(dev, "%s\n", __func__);
+
+ disable_controller(r8a66597);
+
+ for (port = 0; port < r8a66597->max_root_hub; port++) {
+ struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
+
+ rh->port = 0x00000000;
+ }
+
+ return 0;
+}
+
+static int r8a66597_resume(struct device *dev)
+{
+ struct r8a66597 *r8a66597 = dev_get_drvdata(dev);
+ struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
+
+ dev_dbg(dev, "%s\n", __func__);
+
+ enable_controller(r8a66597);
+ usb_root_hub_lost_power(hcd->self.root_hub);
+
+ return 0;
+}
+
+static const struct dev_pm_ops r8a66597_dev_pm_ops = {
+ .suspend = r8a66597_suspend,
+ .resume = r8a66597_resume,
+ .poweroff = r8a66597_suspend,
+ .restore = r8a66597_resume,
+};
+
+#define R8A66597_DEV_PM_OPS (&r8a66597_dev_pm_ops)
+#else /* if defined(CONFIG_PM) */
+#define R8A66597_DEV_PM_OPS NULL
+#endif
+
+static int r8a66597_remove(struct platform_device *pdev)
+{
+ struct r8a66597 *r8a66597 = platform_get_drvdata(pdev);
+ struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
+
+ del_timer_sync(&r8a66597->rh_timer);
+ usb_remove_hcd(hcd);
+ iounmap(r8a66597->reg);
+ if (r8a66597->pdata->on_chip)
+ clk_put(r8a66597->clk);
+ usb_put_hcd(hcd);
+ return 0;
+}
+
+static int r8a66597_probe(struct platform_device *pdev)
+{
+ char clk_name[8];
+ struct resource *res = NULL, *ires;
+ int irq = -1;
+ void __iomem *reg = NULL;
+ struct usb_hcd *hcd = NULL;
+ struct r8a66597 *r8a66597;
+ int ret = 0;
+ int i;
+ unsigned long irq_trigger;
+
+ if (usb_disabled())
+ return -ENODEV;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ ret = -ENODEV;
+ dev_err(&pdev->dev, "platform_get_resource error.\n");
+ goto clean_up;
+ }
+
+ ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!ires) {
+ ret = -ENODEV;
+ dev_err(&pdev->dev,
+ "platform_get_resource IORESOURCE_IRQ error.\n");
+ goto clean_up;
+ }
+
+ irq = ires->start;
+ irq_trigger = ires->flags & IRQF_TRIGGER_MASK;
+
+ reg = ioremap(res->start, resource_size(res));
+ if (reg == NULL) {
+ ret = -ENOMEM;
+ dev_err(&pdev->dev, "ioremap error.\n");
+ goto clean_up;
+ }
+
+ if (pdev->dev.platform_data == NULL) {
+ dev_err(&pdev->dev, "no platform data\n");
+ ret = -ENODEV;
+ goto clean_up;
+ }
+
+ /* initialize hcd */
+ hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
+ if (!hcd) {
+ ret = -ENOMEM;
+ dev_err(&pdev->dev, "Failed to create hcd\n");
+ goto clean_up;
+ }
+ r8a66597 = hcd_to_r8a66597(hcd);
+ memset(r8a66597, 0, sizeof(struct r8a66597));
+ platform_set_drvdata(pdev, r8a66597);
+ r8a66597->pdata = dev_get_platdata(&pdev->dev);
+ r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW;
+
+ if (r8a66597->pdata->on_chip) {
+ snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id);
+ r8a66597->clk = clk_get(&pdev->dev, clk_name);
+ if (IS_ERR(r8a66597->clk)) {
+ dev_err(&pdev->dev, "cannot get clock \"%s\"\n",
+ clk_name);
+ ret = PTR_ERR(r8a66597->clk);
+ goto clean_up2;
+ }
+ r8a66597->max_root_hub = 1;
+ } else
+ r8a66597->max_root_hub = 2;
+
+ spin_lock_init(&r8a66597->lock);
+ timer_setup(&r8a66597->rh_timer, r8a66597_timer, 0);
+ r8a66597->reg = reg;
+
+ /* make sure no interrupts are pending */
+ ret = r8a66597_clock_enable(r8a66597);
+ if (ret < 0)
+ goto clean_up3;
+ disable_controller(r8a66597);
+
+ for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
+ INIT_LIST_HEAD(&r8a66597->pipe_queue[i]);
+ r8a66597->timers[i].r8a66597 = r8a66597;
+ timer_setup(&r8a66597->timers[i].td, r8a66597_td_timer, 0);
+ timer_setup(&r8a66597->timers[i].interval,
+ r8a66597_interval_timer, 0);
+ }
+ INIT_LIST_HEAD(&r8a66597->child_device);
+
+ hcd->rsrc_start = res->start;
+ hcd->has_tt = 1;
+
+ ret = usb_add_hcd(hcd, irq, irq_trigger);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to add hcd\n");
+ goto clean_up3;
+ }
+ device_wakeup_enable(hcd->self.controller);
+
+ return 0;
+
+clean_up3:
+ if (r8a66597->pdata->on_chip)
+ clk_put(r8a66597->clk);
+clean_up2:
+ usb_put_hcd(hcd);
+
+clean_up:
+ if (reg)
+ iounmap(reg);
+
+ return ret;
+}
+
+static struct platform_driver r8a66597_driver = {
+ .probe = r8a66597_probe,
+ .remove = r8a66597_remove,
+ .driver = {
+ .name = hcd_name,
+ .pm = R8A66597_DEV_PM_OPS,
+ },
+};
+
+module_platform_driver(r8a66597_driver);