fd05e72009
* endianness annotations * endianness fixes * missing get_unaligned/put_unaligned It's pretty much all over the place, changes to different files are independent. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Serial-parts-Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2347 lines
58 KiB
C
2347 lines
58 KiB
C
/*
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* R8A66597 HCD (Host Controller Driver)
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*
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* Copyright (C) 2006-2007 Renesas Solutions Corp.
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* Portions Copyright (C) 2004 Psion Teklogix (for NetBook PRO)
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* Portions Copyright (C) 2004-2005 David Brownell
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* Portions Copyright (C) 1999 Roman Weissgaerber
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*
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* Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/smp_lock.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/timer.h>
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#include <linux/delay.h>
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#include <linux/list.h>
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#include <linux/interrupt.h>
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#include <linux/usb.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include <linux/irq.h>
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#include "../core/hcd.h"
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#include "r8a66597.h"
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MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver");
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Yoshihiro Shimoda");
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MODULE_ALIAS("platform:r8a66597_hcd");
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#define DRIVER_VERSION "10 Apr 2008"
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static const char hcd_name[] = "r8a66597_hcd";
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/* module parameters */
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#if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
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static unsigned short clock = XTAL12;
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module_param(clock, ushort, 0644);
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MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0 "
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"(default=0)");
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#endif
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static unsigned short vif = LDRV;
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module_param(vif, ushort, 0644);
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MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0(default=32768)");
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static unsigned short endian;
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module_param(endian, ushort, 0644);
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MODULE_PARM_DESC(endian, "data endian: big=256, little=0 (default=0)");
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static unsigned short irq_sense = INTL;
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module_param(irq_sense, ushort, 0644);
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MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0 "
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"(default=32)");
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static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
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static int r8a66597_get_frame(struct usb_hcd *hcd);
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/* this function must be called with interrupt disabled */
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static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
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unsigned long reg)
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{
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u16 tmp;
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tmp = r8a66597_read(r8a66597, INTENB0);
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r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
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r8a66597_bset(r8a66597, 1 << pipenum, reg);
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r8a66597_write(r8a66597, tmp, INTENB0);
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}
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/* this function must be called with interrupt disabled */
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static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
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unsigned long reg)
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{
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u16 tmp;
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tmp = r8a66597_read(r8a66597, INTENB0);
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r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
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r8a66597_bclr(r8a66597, 1 << pipenum, reg);
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r8a66597_write(r8a66597, tmp, INTENB0);
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}
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static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
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u16 usbspd, u8 upphub, u8 hubport, int port)
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{
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u16 val;
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unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
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val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
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r8a66597_write(r8a66597, val, devadd_reg);
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}
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static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
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{
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u16 tmp;
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int i = 0;
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#if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
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do {
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r8a66597_write(r8a66597, SCKE, SYSCFG0);
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tmp = r8a66597_read(r8a66597, SYSCFG0);
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if (i++ > 1000) {
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err("register access fail.");
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return -ENXIO;
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}
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} while ((tmp & SCKE) != SCKE);
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r8a66597_write(r8a66597, 0x04, 0x02);
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#else
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do {
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r8a66597_write(r8a66597, USBE, SYSCFG0);
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tmp = r8a66597_read(r8a66597, SYSCFG0);
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if (i++ > 1000) {
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err("register access fail.");
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return -ENXIO;
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}
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} while ((tmp & USBE) != USBE);
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r8a66597_bclr(r8a66597, USBE, SYSCFG0);
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r8a66597_mdfy(r8a66597, clock, XTAL, SYSCFG0);
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i = 0;
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r8a66597_bset(r8a66597, XCKE, SYSCFG0);
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do {
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msleep(1);
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tmp = r8a66597_read(r8a66597, SYSCFG0);
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if (i++ > 500) {
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err("register access fail.");
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return -ENXIO;
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}
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} while ((tmp & SCKE) != SCKE);
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#endif /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
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return 0;
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}
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static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
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{
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r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
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udelay(1);
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#if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
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r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
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r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
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r8a66597_bclr(r8a66597, USBE, SYSCFG0);
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#endif
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}
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static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port)
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{
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u16 val;
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val = port ? DRPD : DCFM | DRPD;
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r8a66597_bset(r8a66597, val, get_syscfg_reg(port));
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r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
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r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port));
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r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port));
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r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
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}
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static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
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{
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u16 val, tmp;
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r8a66597_write(r8a66597, 0, get_intenb_reg(port));
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r8a66597_write(r8a66597, 0, get_intsts_reg(port));
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r8a66597_port_power(r8a66597, port, 0);
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do {
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tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
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udelay(640);
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} while (tmp == EDGESTS);
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val = port ? DRPD : DCFM | DRPD;
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r8a66597_bclr(r8a66597, val, get_syscfg_reg(port));
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r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
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}
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static int enable_controller(struct r8a66597 *r8a66597)
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{
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int ret, port;
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ret = r8a66597_clock_enable(r8a66597);
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if (ret < 0)
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return ret;
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r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
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r8a66597_bset(r8a66597, USBE, SYSCFG0);
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r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
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r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG);
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r8a66597_bset(r8a66597, BRDY0, BRDYENB);
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r8a66597_bset(r8a66597, BEMP0, BEMPENB);
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r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
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r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
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r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
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r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
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r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1);
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for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
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r8a66597_enable_port(r8a66597, port);
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return 0;
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}
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static void disable_controller(struct r8a66597 *r8a66597)
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{
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int port;
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r8a66597_write(r8a66597, 0, INTENB0);
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r8a66597_write(r8a66597, 0, INTSTS0);
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for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
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r8a66597_disable_port(r8a66597, port);
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r8a66597_clock_disable(r8a66597);
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}
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static int get_parent_r8a66597_address(struct r8a66597 *r8a66597,
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struct usb_device *udev)
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{
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struct r8a66597_device *dev;
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if (udev->parent && udev->parent->devnum != 1)
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udev = udev->parent;
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dev = dev_get_drvdata(&udev->dev);
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if (dev)
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return dev->address;
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else
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return 0;
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}
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static int is_child_device(char *devpath)
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{
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return (devpath[2] ? 1 : 0);
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}
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static int is_hub_limit(char *devpath)
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{
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return ((strlen(devpath) >= 4) ? 1 : 0);
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}
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static void get_port_number(char *devpath, u16 *root_port, u16 *hub_port)
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{
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if (root_port) {
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*root_port = (devpath[0] & 0x0F) - 1;
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if (*root_port >= R8A66597_MAX_ROOT_HUB)
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err("illegal root port number");
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}
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if (hub_port)
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*hub_port = devpath[2] & 0x0F;
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}
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static u16 get_r8a66597_usb_speed(enum usb_device_speed speed)
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{
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u16 usbspd = 0;
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switch (speed) {
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case USB_SPEED_LOW:
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usbspd = LSMODE;
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break;
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case USB_SPEED_FULL:
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usbspd = FSMODE;
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break;
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case USB_SPEED_HIGH:
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usbspd = HSMODE;
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break;
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default:
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err("unknown speed");
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break;
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}
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return usbspd;
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}
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static void set_child_connect_map(struct r8a66597 *r8a66597, int address)
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{
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int idx;
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idx = address / 32;
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r8a66597->child_connect_map[idx] |= 1 << (address % 32);
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}
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static void put_child_connect_map(struct r8a66597 *r8a66597, int address)
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{
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int idx;
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idx = address / 32;
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r8a66597->child_connect_map[idx] &= ~(1 << (address % 32));
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}
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static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch)
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{
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u16 pipenum = pipe->info.pipenum;
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unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO};
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unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL};
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unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR};
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if (dma_ch > R8A66597_PIPE_NO_DMA) /* dma fifo not use? */
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dma_ch = R8A66597_PIPE_NO_DMA;
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pipe->fifoaddr = fifoaddr[dma_ch];
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pipe->fifosel = fifosel[dma_ch];
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pipe->fifoctr = fifoctr[dma_ch];
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if (pipenum == 0)
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pipe->pipectr = DCPCTR;
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else
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pipe->pipectr = get_pipectr_addr(pipenum);
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if (check_bulk_or_isoc(pipenum)) {
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pipe->pipetre = get_pipetre_addr(pipenum);
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pipe->pipetrn = get_pipetrn_addr(pipenum);
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} else {
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pipe->pipetre = 0;
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pipe->pipetrn = 0;
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}
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}
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static struct r8a66597_device *
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get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb)
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{
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if (usb_pipedevice(urb->pipe) == 0)
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return &r8a66597->device0;
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return dev_get_drvdata(&urb->dev->dev);
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}
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static int make_r8a66597_device(struct r8a66597 *r8a66597,
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struct urb *urb, u8 addr)
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{
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struct r8a66597_device *dev;
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int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */
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dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC);
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if (dev == NULL)
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return -ENOMEM;
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dev_set_drvdata(&urb->dev->dev, dev);
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dev->udev = urb->dev;
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dev->address = addr;
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dev->usb_address = usb_address;
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dev->state = USB_STATE_ADDRESS;
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dev->ep_in_toggle = 0;
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dev->ep_out_toggle = 0;
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INIT_LIST_HEAD(&dev->device_list);
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list_add_tail(&dev->device_list, &r8a66597->child_device);
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get_port_number(urb->dev->devpath, &dev->root_port, &dev->hub_port);
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if (!is_child_device(urb->dev->devpath))
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r8a66597->root_hub[dev->root_port].dev = dev;
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set_devadd_reg(r8a66597, dev->address,
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get_r8a66597_usb_speed(urb->dev->speed),
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get_parent_r8a66597_address(r8a66597, urb->dev),
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dev->hub_port, dev->root_port);
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return 0;
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}
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/* this function must be called with interrupt disabled */
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static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb)
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{
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u8 addr; /* R8A66597's address */
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struct r8a66597_device *dev;
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if (is_hub_limit(urb->dev->devpath)) {
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err("Externel hub limit reached.");
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return 0;
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}
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dev = get_urb_to_r8a66597_dev(r8a66597, urb);
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if (dev && dev->state >= USB_STATE_ADDRESS)
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return dev->address;
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for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) {
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if (r8a66597->address_map & (1 << addr))
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continue;
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dbg("alloc_address: r8a66597_addr=%d", addr);
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r8a66597->address_map |= 1 << addr;
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if (make_r8a66597_device(r8a66597, urb, addr) < 0)
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return 0;
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return addr;
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}
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err("cannot communicate with a USB device more than 10.(%x)",
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r8a66597->address_map);
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return 0;
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}
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/* this function must be called with interrupt disabled */
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static void free_usb_address(struct r8a66597 *r8a66597,
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struct r8a66597_device *dev)
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{
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int port;
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if (!dev)
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return;
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dbg("free_addr: addr=%d", dev->address);
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dev->state = USB_STATE_DEFAULT;
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r8a66597->address_map &= ~(1 << dev->address);
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dev->address = 0;
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dev_set_drvdata(&dev->udev->dev, NULL);
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list_del(&dev->device_list);
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kfree(dev);
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for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
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if (r8a66597->root_hub[port].dev == dev) {
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r8a66597->root_hub[port].dev = NULL;
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break;
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}
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}
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}
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static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
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u16 mask, u16 loop)
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{
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u16 tmp;
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int i = 0;
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do {
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tmp = r8a66597_read(r8a66597, reg);
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if (i++ > 1000000) {
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err("register%lx, loop %x is timeout", reg, loop);
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break;
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}
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ndelay(1);
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} while ((tmp & mask) != loop);
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}
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|
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/* this function must be called with interrupt disabled */
|
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static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
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{
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u16 tmp;
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|
|
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)
|
|
{
|
|
u16 tmp;
|
|
|
|
if (!pipe || pipe->info.pipenum == 0)
|
|
return;
|
|
|
|
pipe_stop(r8a66597, pipe);
|
|
r8a66597_bset(r8a66597, ACLRM, pipe->pipectr);
|
|
tmp = r8a66597_read(r8a66597, pipe->pipectr);
|
|
tmp = r8a66597_read(r8a66597, pipe->pipectr);
|
|
tmp = 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);
|
|
}
|
|
|
|
/* this function must be called with interrupt disabled */
|
|
static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum)
|
|
{
|
|
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)
|
|
{
|
|
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 (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
|
|
case USB_ENDPOINT_XFER_BULK:
|
|
if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
|
|
array[i++] = 4;
|
|
else {
|
|
array[i++] = 3;
|
|
array[i++] = 5;
|
|
}
|
|
break;
|
|
case USB_ENDPOINT_XFER_INT:
|
|
if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) {
|
|
array[i++] = 6;
|
|
array[i++] = 7;
|
|
array[i++] = 8;
|
|
} else
|
|
array[i++] = 9;
|
|
break;
|
|
case USB_ENDPOINT_XFER_ISOC:
|
|
if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
|
|
array[i++] = 2;
|
|
else
|
|
array[i++] = 1;
|
|
break;
|
|
default:
|
|
err("Illegal type");
|
|
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:
|
|
err("Illegal type");
|
|
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
|
|
err("Illegal pipenum (%d)", 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
|
|
err("Illegal pipenum (%d)", 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)
|
|
{
|
|
#if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
|
|
int i;
|
|
struct r8a66597_pipe_info *info = &pipe->info;
|
|
|
|
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;
|
|
|
|
info("address %d, EndpointAddress 0x%02x use DMA FIFO",
|
|
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;
|
|
}
|
|
}
|
|
#endif /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
|
|
}
|
|
|
|
/* 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;
|
|
|
|
dbg("enable_pipe:");
|
|
|
|
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);
|
|
}
|
|
|
|
/* 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)
|
|
continue;
|
|
if (td->address != address)
|
|
continue;
|
|
|
|
urb = td->urb;
|
|
list_del(&td->queue);
|
|
kfree(td);
|
|
|
|
if (urb) {
|
|
usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597),
|
|
urb);
|
|
|
|
spin_unlock(&r8a66597->lock);
|
|
usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb,
|
|
-ENODEV);
|
|
spin_lock(&r8a66597->lock);
|
|
}
|
|
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);
|
|
}
|
|
|
|
dbg("disable_pipe");
|
|
|
|
r8a66597->dma_map &= ~(dev->dma_map);
|
|
dev->dma_map = 0;
|
|
}
|
|
|
|
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 = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
|
|
info.maxpacket = le16_to_cpu(ep->wMaxPacketSize);
|
|
info.type = get_r8a66597_type(ep->bmAttributes
|
|
& USB_ENDPOINT_XFERTYPE_MASK);
|
|
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 {
|
|
if (ep->bInterval > IITV)
|
|
info.interval = IITV;
|
|
else
|
|
info.interval = ep->bInterval ? ep->bInterval - 1 : 0;
|
|
info.timer_interval = get_timer_interval(urb, ep->bInterval);
|
|
}
|
|
if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
|
|
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);
|
|
}
|
|
|
|
/* this function must be called with interrupt disabled */
|
|
static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port,
|
|
u16 syssts)
|
|
{
|
|
if (syssts == SE0) {
|
|
r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
|
|
return;
|
|
}
|
|
|
|
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));
|
|
}
|
|
|
|
/* 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];
|
|
|
|
if (speed == HSMODE)
|
|
rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED);
|
|
else if (speed == LSMODE)
|
|
rh->port |= (1 << USB_PORT_FEAT_LOWSPEED);
|
|
|
|
rh->port &= ~(1 << USB_PORT_FEAT_RESET);
|
|
rh->port |= 1 << USB_PORT_FEAT_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;
|
|
|
|
r8a66597->root_hub[port].port &= ~(1 << USB_PORT_FEAT_CONNECTION);
|
|
r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_C_CONNECTION);
|
|
|
|
disable_r8a66597_pipe_all(r8a66597, dev);
|
|
free_usb_address(r8a66597, dev);
|
|
|
|
r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
|
|
}
|
|
|
|
/* 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:
|
|
err("invalid type.");
|
|
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 = 300;
|
|
break;
|
|
}
|
|
|
|
mod_timer(&r8a66597->td_timer[td->pipenum],
|
|
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);
|
|
|
|
usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
|
|
spin_unlock(&r8a66597->lock);
|
|
usb_hcd_giveback_urb(hcd, urb, status);
|
|
spin_lock(&r8a66597->lock);
|
|
}
|
|
|
|
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);
|
|
err("in fifo not ready (%d)", 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);
|
|
err("out write fifo not ready. (%d)", 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((int)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->fifoaddr, 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 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)
|
|
{
|
|
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;
|
|
r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_CONNECTION)
|
|
| (1 << USB_PORT_FEAT_C_CONNECTION);
|
|
r8a66597_root_hub_start_polling(r8a66597);
|
|
}
|
|
|
|
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);
|
|
}
|
|
if (mask2 & DTCH) {
|
|
r8a66597_write(r8a66597, ~DTCH, INTSTS2);
|
|
r8a66597_bclr(r8a66597, DTCHE, INTENB2);
|
|
r8a66597_usb_disconnect(r8a66597, 1);
|
|
}
|
|
}
|
|
|
|
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);
|
|
}
|
|
if (mask1 & DTCH) {
|
|
r8a66597_write(r8a66597, ~DTCH, INTSTS1);
|
|
r8a66597_bclr(r8a66597, DTCHE, INTENB1);
|
|
r8a66597_usb_disconnect(r8a66597, 0);
|
|
}
|
|
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 & (1 << USB_PORT_FEAT_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 & (1 << USB_PORT_FEAT_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(unsigned long _r8a66597)
|
|
{
|
|
struct r8a66597 *r8a66597 = (struct r8a66597 *)_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->interval_timer[pipenum]))
|
|
continue;
|
|
|
|
td = r8a66597_get_td(r8a66597, pipenum);
|
|
if (td)
|
|
start_transfer(r8a66597, td);
|
|
}
|
|
|
|
spin_unlock_irqrestore(&r8a66597->lock, flags);
|
|
}
|
|
|
|
static void r8a66597_td_timer(unsigned long _r8a66597)
|
|
{
|
|
struct r8a66597 *r8a66597 = (struct r8a66597 *)_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->td_timer[pipenum]))
|
|
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);
|
|
|
|
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);
|
|
|
|
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(unsigned long _r8a66597)
|
|
{
|
|
struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&r8a66597->lock, flags);
|
|
|
|
r8a66597_root_hub_control(r8a66597, 0);
|
|
r8a66597_root_hub_control(r8a66597, 1);
|
|
|
|
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(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,
|
|
!usb_pipein(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->interval_timer[td->pipenum],
|
|
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)
|
|
{
|
|
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;
|
|
|
|
if (pipenum == 0) {
|
|
kfree(hep->hcpriv);
|
|
hep->hcpriv = NULL;
|
|
return;
|
|
}
|
|
|
|
spin_lock_irqsave(&r8a66597->lock, flags);
|
|
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;
|
|
|
|
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));
|
|
|
|
for (chix = 0; chix < udev->maxchild; chix++) {
|
|
struct usb_device *childdev = udev->children[chix];
|
|
|
|
if (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)
|
|
continue;
|
|
if (dev->usb_address != addr)
|
|
continue;
|
|
|
|
return dev;
|
|
}
|
|
|
|
err("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);
|
|
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));
|
|
|
|
list_for_each_entry(bus, &usb_bus_list, bus_list) {
|
|
if (!bus->root_hub)
|
|
continue;
|
|
|
|
if (bus->busnum != hcd->self.busnum)
|
|
continue;
|
|
|
|
collect_usb_address_map(bus->root_hub, now_map);
|
|
update_usb_address_map(r8a66597, bus->root_hub, now_map);
|
|
}
|
|
}
|
|
|
|
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 = 0x29;
|
|
desc->bHubContrCurrent = 0;
|
|
desc->bNbrPorts = R8A66597_MAX_ROOT_HUB;
|
|
desc->bDescLength = 9;
|
|
desc->bPwrOn2PwrGood = 0;
|
|
desc->wHubCharacteristics = cpu_to_le16(0x0011);
|
|
desc->bitmap[0] = ((1 << R8A66597_MAX_ROOT_HUB) - 1) << 1;
|
|
desc->bitmap[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 &= (1 << USB_PORT_FEAT_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 |= (1 << USB_PORT_FEAT_POWER);
|
|
break;
|
|
case USB_PORT_FEAT_RESET: {
|
|
struct r8a66597_device *dev = rh->dev;
|
|
|
|
rh->port |= (1 << USB_PORT_FEAT_RESET);
|
|
|
|
disable_r8a66597_pipe_all(r8a66597, dev);
|
|
free_usb_address(r8a66597, dev);
|
|
|
|
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;
|
|
}
|
|
|
|
static 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,
|
|
};
|
|
|
|
#if defined(CONFIG_PM)
|
|
static int r8a66597_suspend(struct platform_device *pdev, pm_message_t state)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int r8a66597_resume(struct platform_device *pdev)
|
|
{
|
|
return 0;
|
|
}
|
|
#else /* if defined(CONFIG_PM) */
|
|
#define r8a66597_suspend NULL
|
|
#define r8a66597_resume NULL
|
|
#endif
|
|
|
|
static int __init_or_module r8a66597_remove(struct platform_device *pdev)
|
|
{
|
|
struct r8a66597 *r8a66597 = dev_get_drvdata(&pdev->dev);
|
|
struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
|
|
|
|
del_timer_sync(&r8a66597->rh_timer);
|
|
usb_remove_hcd(hcd);
|
|
iounmap((void *)r8a66597->reg);
|
|
usb_put_hcd(hcd);
|
|
return 0;
|
|
}
|
|
|
|
#define resource_len(r) (((r)->end - (r)->start) + 1)
|
|
static int __init r8a66597_probe(struct platform_device *pdev)
|
|
{
|
|
struct resource *res = NULL;
|
|
int irq = -1;
|
|
void __iomem *reg = NULL;
|
|
struct usb_hcd *hcd = NULL;
|
|
struct r8a66597 *r8a66597;
|
|
int ret = 0;
|
|
int i;
|
|
|
|
if (pdev->dev.dma_mask) {
|
|
ret = -EINVAL;
|
|
err("dma not support");
|
|
goto clean_up;
|
|
}
|
|
|
|
res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
|
|
(char *)hcd_name);
|
|
if (!res) {
|
|
ret = -ENODEV;
|
|
err("platform_get_resource_byname error.");
|
|
goto clean_up;
|
|
}
|
|
|
|
irq = platform_get_irq(pdev, 0);
|
|
if (irq < 0) {
|
|
ret = -ENODEV;
|
|
err("platform_get_irq error.");
|
|
goto clean_up;
|
|
}
|
|
|
|
reg = ioremap(res->start, resource_len(res));
|
|
if (reg == NULL) {
|
|
ret = -ENOMEM;
|
|
err("ioremap error.");
|
|
goto clean_up;
|
|
}
|
|
|
|
/* initialize hcd */
|
|
hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
|
|
if (!hcd) {
|
|
ret = -ENOMEM;
|
|
err("Failed to create hcd");
|
|
goto clean_up;
|
|
}
|
|
r8a66597 = hcd_to_r8a66597(hcd);
|
|
memset(r8a66597, 0, sizeof(struct r8a66597));
|
|
dev_set_drvdata(&pdev->dev, r8a66597);
|
|
|
|
spin_lock_init(&r8a66597->lock);
|
|
init_timer(&r8a66597->rh_timer);
|
|
r8a66597->rh_timer.function = r8a66597_timer;
|
|
r8a66597->rh_timer.data = (unsigned long)r8a66597;
|
|
r8a66597->reg = (unsigned long)reg;
|
|
|
|
for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
|
|
INIT_LIST_HEAD(&r8a66597->pipe_queue[i]);
|
|
init_timer(&r8a66597->td_timer[i]);
|
|
r8a66597->td_timer[i].function = r8a66597_td_timer;
|
|
r8a66597->td_timer[i].data = (unsigned long)r8a66597;
|
|
setup_timer(&r8a66597->interval_timer[i],
|
|
r8a66597_interval_timer,
|
|
(unsigned long)r8a66597);
|
|
}
|
|
INIT_LIST_HEAD(&r8a66597->child_device);
|
|
|
|
hcd->rsrc_start = res->start;
|
|
ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
|
|
if (ret != 0) {
|
|
err("Failed to add hcd");
|
|
goto clean_up;
|
|
}
|
|
|
|
return 0;
|
|
|
|
clean_up:
|
|
if (reg)
|
|
iounmap(reg);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct platform_driver r8a66597_driver = {
|
|
.probe = r8a66597_probe,
|
|
.remove = r8a66597_remove,
|
|
.suspend = r8a66597_suspend,
|
|
.resume = r8a66597_resume,
|
|
.driver = {
|
|
.name = (char *) hcd_name,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|
|
|
|
static int __init r8a66597_init(void)
|
|
{
|
|
if (usb_disabled())
|
|
return -ENODEV;
|
|
|
|
info("driver %s, %s", hcd_name, DRIVER_VERSION);
|
|
return platform_driver_register(&r8a66597_driver);
|
|
}
|
|
module_init(r8a66597_init);
|
|
|
|
static void __exit r8a66597_cleanup(void)
|
|
{
|
|
platform_driver_unregister(&r8a66597_driver);
|
|
}
|
|
module_exit(r8a66597_cleanup);
|
|
|