2 * R8A66597 HCD (Host Controller Driver)
4 * Copyright (C) 2006-2007 Renesas Solutions Corp.
5 * Portions Copyright (C) 2004 Psion Teklogix (for NetBook PRO)
6 * Portions Copyright (C) 2004-2005 David Brownell
7 * Portions Copyright (C) 1999 Roman Weissgaerber
9 * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; version 2 of the License.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
26 #include <linux/module.h>
27 #include <linux/kernel.h>
28 #include <linux/sched.h>
29 #include <linux/smp_lock.h>
30 #include <linux/errno.h>
31 #include <linux/init.h>
32 #include <linux/timer.h>
33 #include <linux/delay.h>
34 #include <linux/list.h>
35 #include <linux/interrupt.h>
36 #include <linux/usb.h>
37 #include <linux/platform_device.h>
39 #include <linux/irq.h>
41 #include "../core/hcd.h"
44 MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver");
45 MODULE_LICENSE("GPL");
46 MODULE_AUTHOR("Yoshihiro Shimoda");
47 MODULE_ALIAS("platform:r8a66597_hcd");
49 #define DRIVER_VERSION "10 Apr 2008"
51 static const char hcd_name[] = "r8a66597_hcd";
53 /* module parameters */
54 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
55 static unsigned short clock = XTAL12;
56 module_param(clock, ushort, 0644);
57 MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0 "
61 static unsigned short vif = LDRV;
62 module_param(vif, ushort, 0644);
63 MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0(default=32768)");
65 static unsigned short endian;
66 module_param(endian, ushort, 0644);
67 MODULE_PARM_DESC(endian, "data endian: big=256, little=0 (default=0)");
69 static unsigned short irq_sense = 0xff;
70 module_param(irq_sense, ushort, 0644);
71 MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0 "
74 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
75 static int r8a66597_get_frame(struct usb_hcd *hcd);
77 /* this function must be called with interrupt disabled */
78 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
83 tmp = r8a66597_read(r8a66597, INTENB0);
84 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
85 r8a66597_bset(r8a66597, 1 << pipenum, reg);
86 r8a66597_write(r8a66597, tmp, INTENB0);
89 /* this function must be called with interrupt disabled */
90 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
95 tmp = r8a66597_read(r8a66597, INTENB0);
96 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
97 r8a66597_bclr(r8a66597, 1 << pipenum, reg);
98 r8a66597_write(r8a66597, tmp, INTENB0);
101 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
102 u16 usbspd, u8 upphub, u8 hubport, int port)
105 unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
107 val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
108 r8a66597_write(r8a66597, val, devadd_reg);
111 static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
116 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
118 r8a66597_write(r8a66597, SCKE, SYSCFG0);
119 tmp = r8a66597_read(r8a66597, SYSCFG0);
121 err("register access fail.");
124 } while ((tmp & SCKE) != SCKE);
125 r8a66597_write(r8a66597, 0x04, 0x02);
128 r8a66597_write(r8a66597, USBE, SYSCFG0);
129 tmp = r8a66597_read(r8a66597, SYSCFG0);
131 err("register access fail.");
134 } while ((tmp & USBE) != USBE);
135 r8a66597_bclr(r8a66597, USBE, SYSCFG0);
136 r8a66597_mdfy(r8a66597, clock, XTAL, SYSCFG0);
139 r8a66597_bset(r8a66597, XCKE, SYSCFG0);
142 tmp = r8a66597_read(r8a66597, SYSCFG0);
144 err("register access fail.");
147 } while ((tmp & SCKE) != SCKE);
148 #endif /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
153 static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
155 r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
157 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
158 r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
159 r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
160 r8a66597_bclr(r8a66597, USBE, SYSCFG0);
164 static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port)
168 val = port ? DRPD : DCFM | DRPD;
169 r8a66597_bset(r8a66597, val, get_syscfg_reg(port));
170 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
172 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port));
173 r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port));
174 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
177 static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
181 r8a66597_write(r8a66597, 0, get_intenb_reg(port));
182 r8a66597_write(r8a66597, 0, get_intsts_reg(port));
184 r8a66597_port_power(r8a66597, port, 0);
187 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
189 } while (tmp == EDGESTS);
191 val = port ? DRPD : DCFM | DRPD;
192 r8a66597_bclr(r8a66597, val, get_syscfg_reg(port));
193 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
196 static int enable_controller(struct r8a66597 *r8a66597)
200 ret = r8a66597_clock_enable(r8a66597);
204 r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
205 r8a66597_bset(r8a66597, USBE, SYSCFG0);
207 r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
208 r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG);
209 r8a66597_bset(r8a66597, BRDY0, BRDYENB);
210 r8a66597_bset(r8a66597, BEMP0, BEMPENB);
212 r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
213 r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
214 r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
215 r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
217 r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1);
219 for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
220 r8a66597_enable_port(r8a66597, port);
225 static void disable_controller(struct r8a66597 *r8a66597)
229 r8a66597_write(r8a66597, 0, INTENB0);
230 r8a66597_write(r8a66597, 0, INTSTS0);
232 for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
233 r8a66597_disable_port(r8a66597, port);
235 r8a66597_clock_disable(r8a66597);
238 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597,
239 struct usb_device *udev)
241 struct r8a66597_device *dev;
243 if (udev->parent && udev->parent->devnum != 1)
246 dev = dev_get_drvdata(&udev->dev);
253 static int is_child_device(char *devpath)
255 return (devpath[2] ? 1 : 0);
258 static int is_hub_limit(char *devpath)
260 return ((strlen(devpath) >= 4) ? 1 : 0);
263 static void get_port_number(char *devpath, u16 *root_port, u16 *hub_port)
266 *root_port = (devpath[0] & 0x0F) - 1;
267 if (*root_port >= R8A66597_MAX_ROOT_HUB)
268 err("illegal root port number");
271 *hub_port = devpath[2] & 0x0F;
274 static u16 get_r8a66597_usb_speed(enum usb_device_speed speed)
289 err("unknown speed");
296 static void set_child_connect_map(struct r8a66597 *r8a66597, int address)
301 r8a66597->child_connect_map[idx] |= 1 << (address % 32);
304 static void put_child_connect_map(struct r8a66597 *r8a66597, int address)
309 r8a66597->child_connect_map[idx] &= ~(1 << (address % 32));
312 static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch)
314 u16 pipenum = pipe->info.pipenum;
315 const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO};
316 const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL};
317 const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR};
319 if (dma_ch > R8A66597_PIPE_NO_DMA) /* dma fifo not use? */
320 dma_ch = R8A66597_PIPE_NO_DMA;
322 pipe->fifoaddr = fifoaddr[dma_ch];
323 pipe->fifosel = fifosel[dma_ch];
324 pipe->fifoctr = fifoctr[dma_ch];
327 pipe->pipectr = DCPCTR;
329 pipe->pipectr = get_pipectr_addr(pipenum);
331 if (check_bulk_or_isoc(pipenum)) {
332 pipe->pipetre = get_pipetre_addr(pipenum);
333 pipe->pipetrn = get_pipetrn_addr(pipenum);
340 static struct r8a66597_device *
341 get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb)
343 if (usb_pipedevice(urb->pipe) == 0)
344 return &r8a66597->device0;
346 return dev_get_drvdata(&urb->dev->dev);
349 static int make_r8a66597_device(struct r8a66597 *r8a66597,
350 struct urb *urb, u8 addr)
352 struct r8a66597_device *dev;
353 int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */
355 dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC);
359 dev_set_drvdata(&urb->dev->dev, dev);
360 dev->udev = urb->dev;
362 dev->usb_address = usb_address;
363 dev->state = USB_STATE_ADDRESS;
364 dev->ep_in_toggle = 0;
365 dev->ep_out_toggle = 0;
366 INIT_LIST_HEAD(&dev->device_list);
367 list_add_tail(&dev->device_list, &r8a66597->child_device);
369 get_port_number(urb->dev->devpath, &dev->root_port, &dev->hub_port);
370 if (!is_child_device(urb->dev->devpath))
371 r8a66597->root_hub[dev->root_port].dev = dev;
373 set_devadd_reg(r8a66597, dev->address,
374 get_r8a66597_usb_speed(urb->dev->speed),
375 get_parent_r8a66597_address(r8a66597, urb->dev),
376 dev->hub_port, dev->root_port);
381 /* this function must be called with interrupt disabled */
382 static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb)
384 u8 addr; /* R8A66597's address */
385 struct r8a66597_device *dev;
387 if (is_hub_limit(urb->dev->devpath)) {
388 err("Externel hub limit reached.");
392 dev = get_urb_to_r8a66597_dev(r8a66597, urb);
393 if (dev && dev->state >= USB_STATE_ADDRESS)
396 for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) {
397 if (r8a66597->address_map & (1 << addr))
400 dbg("alloc_address: r8a66597_addr=%d", addr);
401 r8a66597->address_map |= 1 << addr;
403 if (make_r8a66597_device(r8a66597, urb, addr) < 0)
409 err("cannot communicate with a USB device more than 10.(%x)",
410 r8a66597->address_map);
415 /* this function must be called with interrupt disabled */
416 static void free_usb_address(struct r8a66597 *r8a66597,
417 struct r8a66597_device *dev)
424 dbg("free_addr: addr=%d", dev->address);
426 dev->state = USB_STATE_DEFAULT;
427 r8a66597->address_map &= ~(1 << dev->address);
429 dev_set_drvdata(&dev->udev->dev, NULL);
430 list_del(&dev->device_list);
433 for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
434 if (r8a66597->root_hub[port].dev == dev) {
435 r8a66597->root_hub[port].dev = NULL;
441 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
448 tmp = r8a66597_read(r8a66597, reg);
450 err("register%lx, loop %x is timeout", reg, loop);
454 } while ((tmp & mask) != loop);
457 /* this function must be called with interrupt disabled */
458 static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
462 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
463 if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */
464 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
465 r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr);
468 /* this function must be called with interrupt disabled */
469 static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
473 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
474 if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */
475 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr);
476 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
477 r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0);
480 /* this function must be called with interrupt disabled */
481 static void clear_all_buffer(struct r8a66597 *r8a66597,
482 struct r8a66597_pipe *pipe)
486 if (!pipe || pipe->info.pipenum == 0)
489 pipe_stop(r8a66597, pipe);
490 r8a66597_bset(r8a66597, ACLRM, pipe->pipectr);
491 tmp = r8a66597_read(r8a66597, pipe->pipectr);
492 tmp = r8a66597_read(r8a66597, pipe->pipectr);
493 tmp = r8a66597_read(r8a66597, pipe->pipectr);
494 r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr);
497 /* this function must be called with interrupt disabled */
498 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597,
499 struct r8a66597_pipe *pipe, int toggle)
502 r8a66597_bset(r8a66597, SQSET, pipe->pipectr);
504 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr);
507 /* this function must be called with interrupt disabled */
508 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum)
510 r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL);
511 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
514 /* this function must be called with interrupt disabled */
515 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597,
516 struct r8a66597_pipe *pipe)
518 cfifo_change(r8a66597, 0);
519 r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D0FIFOSEL);
520 r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D1FIFOSEL);
522 r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum, MBW | CURPIPE,
524 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum);
527 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep)
529 struct r8a66597_pipe *pipe = hep->hcpriv;
531 if (usb_pipeendpoint(urb->pipe) == 0)
534 return pipe->info.pipenum;
537 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb)
539 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
541 return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address;
544 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev,
550 return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle;
553 /* this function must be called with interrupt disabled */
554 static void pipe_toggle_set(struct r8a66597 *r8a66597,
555 struct r8a66597_pipe *pipe,
556 struct urb *urb, int set)
558 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
559 unsigned char endpoint = usb_pipeendpoint(urb->pipe);
560 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
566 *toggle |= 1 << endpoint;
568 *toggle &= ~(1 << endpoint);
571 /* this function must be called with interrupt disabled */
572 static void pipe_toggle_save(struct r8a66597 *r8a66597,
573 struct r8a66597_pipe *pipe,
576 if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON)
577 pipe_toggle_set(r8a66597, pipe, urb, 1);
579 pipe_toggle_set(r8a66597, pipe, urb, 0);
582 /* this function must be called with interrupt disabled */
583 static void pipe_toggle_restore(struct r8a66597 *r8a66597,
584 struct r8a66597_pipe *pipe,
587 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
588 unsigned char endpoint = usb_pipeendpoint(urb->pipe);
589 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
594 r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint));
597 /* this function must be called with interrupt disabled */
598 static void pipe_buffer_setting(struct r8a66597 *r8a66597,
599 struct r8a66597_pipe_info *info)
603 if (info->pipenum == 0)
606 r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
607 r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
608 r8a66597_write(r8a66597, info->pipenum, PIPESEL);
611 if (info->type == R8A66597_BULK && info->dir_in)
612 val |= R8A66597_DBLB | R8A66597_SHTNAK;
613 val |= info->type | info->epnum;
614 r8a66597_write(r8a66597, val, PIPECFG);
616 r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum),
618 r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket,
620 r8a66597_write(r8a66597, info->interval, PIPEPERI);
623 /* this function must be called with interrupt disabled */
624 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td)
626 struct r8a66597_pipe_info *info;
627 struct urb *urb = td->urb;
629 if (td->pipenum > 0) {
630 info = &td->pipe->info;
631 cfifo_change(r8a66597, 0);
632 pipe_buffer_setting(r8a66597, info);
634 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
635 usb_pipeout(urb->pipe)) &&
636 !usb_pipecontrol(urb->pipe)) {
637 r8a66597_pipe_toggle(r8a66597, td->pipe, 0);
638 pipe_toggle_set(r8a66597, td->pipe, urb, 0);
639 clear_all_buffer(r8a66597, td->pipe);
640 usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
641 usb_pipeout(urb->pipe), 1);
643 pipe_toggle_restore(r8a66597, td->pipe, urb);
647 /* this function must be called with interrupt disabled */
648 static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
649 struct usb_endpoint_descriptor *ep)
651 u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
653 memset(array, 0, sizeof(array));
654 switch (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
655 case USB_ENDPOINT_XFER_BULK:
656 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
663 case USB_ENDPOINT_XFER_INT:
664 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) {
671 case USB_ENDPOINT_XFER_ISOC:
672 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
684 while (array[i] != 0) {
685 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]])
693 static u16 get_r8a66597_type(__u8 type)
698 case USB_ENDPOINT_XFER_BULK:
699 r8a66597_type = R8A66597_BULK;
701 case USB_ENDPOINT_XFER_INT:
702 r8a66597_type = R8A66597_INT;
704 case USB_ENDPOINT_XFER_ISOC:
705 r8a66597_type = R8A66597_ISO;
709 r8a66597_type = 0x0000;
713 return r8a66597_type;
716 static u16 get_bufnum(u16 pipenum)
722 else if (check_bulk_or_isoc(pipenum))
723 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2;
724 else if (check_interrupt(pipenum))
725 bufnum = 4 + (pipenum - 6);
727 err("Illegal pipenum (%d)", pipenum);
732 static u16 get_buf_bsize(u16 pipenum)
738 else if (check_bulk_or_isoc(pipenum))
739 buf_bsize = R8A66597_BUF_BSIZE - 1;
740 else if (check_interrupt(pipenum))
743 err("Illegal pipenum (%d)", pipenum);
748 /* this function must be called with interrupt disabled */
749 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597,
750 struct r8a66597_device *dev,
751 struct r8a66597_pipe *pipe,
754 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
756 struct r8a66597_pipe_info *info = &pipe->info;
758 if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) {
759 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) {
760 if ((r8a66597->dma_map & (1 << i)) != 0)
763 dev_info(&dev->udev->dev,
764 "address %d, EndpointAddress 0x%02x use "
765 "DMA FIFO\n", usb_pipedevice(urb->pipe),
767 USB_ENDPOINT_DIR_MASK + info->epnum
770 r8a66597->dma_map |= 1 << i;
771 dev->dma_map |= 1 << i;
772 set_pipe_reg_addr(pipe, i);
774 cfifo_change(r8a66597, 0);
775 r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum,
776 MBW | CURPIPE, pipe->fifosel);
778 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE,
780 r8a66597_bset(r8a66597, BCLR, pipe->fifoctr);
784 #endif /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
787 /* this function must be called with interrupt disabled */
788 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb,
789 struct usb_host_endpoint *hep,
790 struct r8a66597_pipe_info *info)
792 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
793 struct r8a66597_pipe *pipe = hep->hcpriv;
798 set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA);
799 r8a66597->pipe_cnt[pipe->info.pipenum]++;
800 dev->pipe_cnt[pipe->info.pipenum]++;
802 enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb);
805 /* this function must be called with interrupt disabled */
806 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
808 struct r8a66597_td *td, *next;
810 struct list_head *list = &r8a66597->pipe_queue[pipenum];
812 if (list_empty(list))
815 list_for_each_entry_safe(td, next, list, queue) {
818 if (td->address != address)
822 list_del(&td->queue);
826 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597),
829 spin_unlock(&r8a66597->lock);
830 usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb,
832 spin_lock(&r8a66597->lock);
838 /* this function must be called with interrupt disabled */
839 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597,
840 struct r8a66597_device *dev)
848 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
849 if (!dev->pipe_cnt[pipenum])
854 force_dequeue(r8a66597, 0, dev->address);
857 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum];
858 dev->pipe_cnt[pipenum] = 0;
859 force_dequeue(r8a66597, pipenum, dev->address);
864 r8a66597->dma_map &= ~(dev->dma_map);
868 static u16 get_interval(struct urb *urb, __u8 interval)
873 if (urb->dev->speed == USB_SPEED_HIGH) {
877 time = interval ? interval - 1 : 0;
879 if (interval > 128) {
882 /* calculate the nearest value for PIPEPERI */
883 for (i = 0; i < 7; i++) {
884 if ((1 << i) < interval &&
885 (1 << (i + 1) > interval))
894 static unsigned long get_timer_interval(struct urb *urb, __u8 interval)
897 unsigned long time = 1;
899 if (usb_pipeisoc(urb->pipe))
902 if (get_r8a66597_usb_speed(urb->dev->speed) == HSMODE) {
903 for (i = 0; i < (interval - 1); i++)
905 time = time * 125 / 1000; /* uSOF -> msec */
913 /* this function must be called with interrupt disabled */
914 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
915 struct usb_host_endpoint *hep,
916 struct usb_endpoint_descriptor *ep)
918 struct r8a66597_pipe_info info;
920 info.pipenum = get_empty_pipenum(r8a66597, ep);
921 info.address = get_urb_to_r8a66597_addr(r8a66597, urb);
922 info.epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
923 info.maxpacket = le16_to_cpu(ep->wMaxPacketSize);
924 info.type = get_r8a66597_type(ep->bmAttributes
925 & USB_ENDPOINT_XFERTYPE_MASK);
926 info.bufnum = get_bufnum(info.pipenum);
927 info.buf_bsize = get_buf_bsize(info.pipenum);
928 if (info.type == R8A66597_BULK) {
930 info.timer_interval = 0;
932 info.interval = get_interval(urb, ep->bInterval);
933 info.timer_interval = get_timer_interval(urb, ep->bInterval);
935 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
940 enable_r8a66597_pipe(r8a66597, urb, hep, &info);
943 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
945 struct r8a66597_device *dev;
947 dev = get_urb_to_r8a66597_dev(r8a66597, urb);
948 dev->state = USB_STATE_CONFIGURED;
951 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb,
954 if (pipenum == 0 && usb_pipeout(urb->pipe))
955 enable_irq_empty(r8a66597, pipenum);
957 enable_irq_ready(r8a66597, pipenum);
959 if (!usb_pipeisoc(urb->pipe))
960 enable_irq_nrdy(r8a66597, pipenum);
963 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
965 disable_irq_ready(r8a66597, pipenum);
966 disable_irq_nrdy(r8a66597, pipenum);
969 static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597)
971 mod_timer(&r8a66597->rh_timer,
972 jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME));
975 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port,
978 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
980 rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
981 rh->scount = R8A66597_MAX_SAMPLING;
983 rh->port |= 1 << USB_PORT_FEAT_CONNECTION;
985 rh->port &= ~(1 << USB_PORT_FEAT_CONNECTION);
986 rh->port |= 1 << USB_PORT_FEAT_C_CONNECTION;
988 r8a66597_root_hub_start_polling(r8a66597);
991 /* this function must be called with interrupt disabled */
992 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port,
996 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
997 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
1001 if (syssts == FS_JSTS)
1002 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
1003 else if (syssts == LS_JSTS)
1004 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
1006 r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port));
1007 r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
1010 /* this function must be called with interrupt disabled */
1011 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port)
1013 u16 speed = get_rh_usb_speed(r8a66597, port);
1014 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1016 if (speed == HSMODE)
1017 rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED);
1018 else if (speed == LSMODE)
1019 rh->port |= (1 << USB_PORT_FEAT_LOWSPEED);
1021 rh->port &= ~(1 << USB_PORT_FEAT_RESET);
1022 rh->port |= 1 << USB_PORT_FEAT_ENABLE;
1025 /* this function must be called with interrupt disabled */
1026 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port)
1028 struct r8a66597_device *dev = r8a66597->root_hub[port].dev;
1030 disable_r8a66597_pipe_all(r8a66597, dev);
1031 free_usb_address(r8a66597, dev);
1033 start_root_hub_sampling(r8a66597, port, 0);
1036 /* this function must be called with interrupt disabled */
1037 static void prepare_setup_packet(struct r8a66597 *r8a66597,
1038 struct r8a66597_td *td)
1041 __le16 *p = (__le16 *)td->urb->setup_packet;
1042 unsigned long setup_addr = USBREQ;
1044 r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
1046 r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
1048 for (i = 0; i < 4; i++) {
1049 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr);
1052 r8a66597_write(r8a66597, SUREQ, DCPCTR);
1055 /* this function must be called with interrupt disabled */
1056 static void prepare_packet_read(struct r8a66597 *r8a66597,
1057 struct r8a66597_td *td)
1059 struct urb *urb = td->urb;
1061 if (usb_pipecontrol(urb->pipe)) {
1062 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1063 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1064 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1065 if (urb->actual_length == 0) {
1066 r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1067 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1069 pipe_irq_disable(r8a66597, td->pipenum);
1070 pipe_start(r8a66597, td->pipe);
1071 pipe_irq_enable(r8a66597, urb, td->pipenum);
1073 if (urb->actual_length == 0) {
1074 pipe_irq_disable(r8a66597, td->pipenum);
1075 pipe_setting(r8a66597, td);
1076 pipe_stop(r8a66597, td->pipe);
1077 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1079 if (td->pipe->pipetre) {
1080 r8a66597_write(r8a66597, TRCLR,
1082 r8a66597_write(r8a66597,
1084 (urb->transfer_buffer_length,
1087 r8a66597_bset(r8a66597, TRENB,
1091 pipe_start(r8a66597, td->pipe);
1092 pipe_irq_enable(r8a66597, urb, td->pipenum);
1097 /* this function must be called with interrupt disabled */
1098 static void prepare_packet_write(struct r8a66597 *r8a66597,
1099 struct r8a66597_td *td)
1102 struct urb *urb = td->urb;
1104 if (usb_pipecontrol(urb->pipe)) {
1105 pipe_stop(r8a66597, td->pipe);
1106 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1107 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1108 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1109 if (urb->actual_length == 0) {
1110 r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1111 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1114 if (urb->actual_length == 0)
1115 pipe_setting(r8a66597, td);
1116 if (td->pipe->pipetre)
1117 r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
1119 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1121 fifo_change_from_pipe(r8a66597, td->pipe);
1122 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1123 if (unlikely((tmp & FRDY) == 0))
1124 pipe_irq_enable(r8a66597, urb, td->pipenum);
1126 packet_write(r8a66597, td->pipenum);
1127 pipe_start(r8a66597, td->pipe);
1130 /* this function must be called with interrupt disabled */
1131 static void prepare_status_packet(struct r8a66597 *r8a66597,
1132 struct r8a66597_td *td)
1134 struct urb *urb = td->urb;
1136 r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1137 pipe_stop(r8a66597, td->pipe);
1139 if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
1140 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1141 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1142 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1143 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
1144 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR);
1145 enable_irq_empty(r8a66597, 0);
1147 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1148 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1149 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1150 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1151 enable_irq_ready(r8a66597, 0);
1153 enable_irq_nrdy(r8a66597, 0);
1154 pipe_start(r8a66597, td->pipe);
1157 static int is_set_address(unsigned char *setup_packet)
1159 if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) &&
1160 setup_packet[1] == USB_REQ_SET_ADDRESS)
1166 /* this function must be called with interrupt disabled */
1167 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1173 if (is_set_address(td->urb->setup_packet)) {
1174 td->set_address = 1;
1175 td->urb->setup_packet[2] = alloc_usb_address(r8a66597,
1177 if (td->urb->setup_packet[2] == 0)
1180 prepare_setup_packet(r8a66597, td);
1183 prepare_packet_read(r8a66597, td);
1186 prepare_packet_write(r8a66597, td);
1189 prepare_status_packet(r8a66597, td);
1192 err("invalid type.");
1199 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb)
1201 if (usb_pipeisoc(urb->pipe)) {
1202 if (urb->number_of_packets == td->iso_cnt)
1206 /* control or bulk or interrupt */
1207 if ((urb->transfer_buffer_length <= urb->actual_length) ||
1208 (td->short_packet) || (td->zero_packet))
1214 /* this function must be called with interrupt disabled */
1215 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1221 if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) &&
1222 !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) {
1223 r8a66597->timeout_map |= 1 << td->pipenum;
1224 switch (usb_pipetype(td->urb->pipe)) {
1225 case PIPE_INTERRUPT:
1226 case PIPE_ISOCHRONOUS:
1234 mod_timer(&r8a66597->td_timer[td->pipenum],
1235 jiffies + msecs_to_jiffies(time));
1239 /* this function must be called with interrupt disabled */
1240 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
1241 u16 pipenum, struct urb *urb, int status)
1242 __releases(r8a66597->lock) __acquires(r8a66597->lock)
1245 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
1247 r8a66597->timeout_map &= ~(1 << pipenum);
1250 if (td->set_address && (status != 0 || urb->unlinked))
1251 r8a66597->address_map &= ~(1 << urb->setup_packet[2]);
1253 pipe_toggle_save(r8a66597, td->pipe, urb);
1254 list_del(&td->queue);
1258 if (!list_empty(&r8a66597->pipe_queue[pipenum]))
1262 if (usb_pipeisoc(urb->pipe))
1263 urb->start_frame = r8a66597_get_frame(hcd);
1265 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
1266 spin_unlock(&r8a66597->lock);
1267 usb_hcd_giveback_urb(hcd, urb, status);
1268 spin_lock(&r8a66597->lock);
1272 td = r8a66597_get_td(r8a66597, pipenum);
1276 start_transfer(r8a66597, td);
1277 set_td_timer(r8a66597, td);
1281 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
1284 int rcv_len, bufsize, urb_len, size;
1286 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1295 fifo_change_from_pipe(r8a66597, td->pipe);
1296 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1297 if (unlikely((tmp & FRDY) == 0)) {
1298 pipe_stop(r8a66597, td->pipe);
1299 pipe_irq_disable(r8a66597, pipenum);
1300 err("in fifo not ready (%d)", pipenum);
1301 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE);
1305 /* prepare parameters */
1306 rcv_len = tmp & DTLN;
1307 if (usb_pipeisoc(urb->pipe)) {
1308 buf = (u16 *)(urb->transfer_buffer +
1309 urb->iso_frame_desc[td->iso_cnt].offset);
1310 urb_len = urb->iso_frame_desc[td->iso_cnt].length;
1312 buf = (void *)urb->transfer_buffer + urb->actual_length;
1313 urb_len = urb->transfer_buffer_length - urb->actual_length;
1315 bufsize = min(urb_len, (int) td->maxpacket);
1316 if (rcv_len <= bufsize) {
1320 status = -EOVERFLOW;
1324 /* update parameters */
1325 urb->actual_length += size;
1327 td->zero_packet = 1;
1328 if (rcv_len < bufsize) {
1329 td->short_packet = 1;
1331 if (usb_pipeisoc(urb->pipe)) {
1332 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1333 urb->iso_frame_desc[td->iso_cnt].status = status;
1338 /* check transfer finish */
1339 if (finish || check_transfer_finish(td, urb)) {
1340 pipe_stop(r8a66597, td->pipe);
1341 pipe_irq_disable(r8a66597, pipenum);
1346 if (urb->transfer_buffer) {
1348 r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr);
1350 r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr,
1354 if (finish && pipenum != 0)
1355 finish_request(r8a66597, td, pipenum, urb, status);
1358 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
1363 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1370 fifo_change_from_pipe(r8a66597, td->pipe);
1371 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1372 if (unlikely((tmp & FRDY) == 0)) {
1373 pipe_stop(r8a66597, td->pipe);
1374 pipe_irq_disable(r8a66597, pipenum);
1375 err("out write fifo not ready. (%d)", pipenum);
1376 finish_request(r8a66597, td, pipenum, urb, -EPIPE);
1380 /* prepare parameters */
1381 bufsize = td->maxpacket;
1382 if (usb_pipeisoc(urb->pipe)) {
1383 buf = (u16 *)(urb->transfer_buffer +
1384 urb->iso_frame_desc[td->iso_cnt].offset);
1386 (int)urb->iso_frame_desc[td->iso_cnt].length);
1388 buf = (u16 *)(urb->transfer_buffer + urb->actual_length);
1389 size = min((int)bufsize,
1390 urb->transfer_buffer_length - urb->actual_length);
1395 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
1396 if (urb->transfer_buffer) {
1397 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size);
1398 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
1399 r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr);
1402 /* update parameters */
1403 urb->actual_length += size;
1404 if (usb_pipeisoc(urb->pipe)) {
1405 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1406 urb->iso_frame_desc[td->iso_cnt].status = 0;
1410 /* check transfer finish */
1411 if (check_transfer_finish(td, urb)) {
1412 disable_irq_ready(r8a66597, pipenum);
1413 enable_irq_empty(r8a66597, pipenum);
1414 if (!usb_pipeisoc(urb->pipe))
1415 enable_irq_nrdy(r8a66597, pipenum);
1417 pipe_irq_enable(r8a66597, urb, pipenum);
1421 static void check_next_phase(struct r8a66597 *r8a66597, int status)
1423 struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0);
1434 if (check_transfer_finish(td, urb))
1435 td->type = USB_PID_ACK;
1438 if (urb->transfer_buffer_length == urb->actual_length)
1439 td->type = USB_PID_ACK;
1440 else if (usb_pipeout(urb->pipe))
1441 td->type = USB_PID_OUT;
1443 td->type = USB_PID_IN;
1450 if (finish || status != 0 || urb->unlinked)
1451 finish_request(r8a66597, td, 0, urb, status);
1453 start_transfer(r8a66597, td);
1456 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
1458 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1461 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID;
1471 static void irq_pipe_ready(struct r8a66597 *r8a66597)
1476 struct r8a66597_td *td;
1478 mask = r8a66597_read(r8a66597, BRDYSTS)
1479 & r8a66597_read(r8a66597, BRDYENB);
1480 r8a66597_write(r8a66597, ~mask, BRDYSTS);
1482 td = r8a66597_get_td(r8a66597, 0);
1483 if (td && td->type == USB_PID_IN)
1484 packet_read(r8a66597, 0);
1486 pipe_irq_disable(r8a66597, 0);
1487 check_next_phase(r8a66597, 0);
1490 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1491 check = 1 << pipenum;
1493 td = r8a66597_get_td(r8a66597, pipenum);
1497 if (td->type == USB_PID_IN)
1498 packet_read(r8a66597, pipenum);
1499 else if (td->type == USB_PID_OUT)
1500 packet_write(r8a66597, pipenum);
1505 static void irq_pipe_empty(struct r8a66597 *r8a66597)
1511 struct r8a66597_td *td;
1513 mask = r8a66597_read(r8a66597, BEMPSTS)
1514 & r8a66597_read(r8a66597, BEMPENB);
1515 r8a66597_write(r8a66597, ~mask, BEMPSTS);
1517 cfifo_change(r8a66597, 0);
1518 td = r8a66597_get_td(r8a66597, 0);
1519 if (td && td->type != USB_PID_OUT)
1520 disable_irq_empty(r8a66597, 0);
1521 check_next_phase(r8a66597, 0);
1524 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1525 check = 1 << pipenum;
1527 struct r8a66597_td *td;
1528 td = r8a66597_get_td(r8a66597, pipenum);
1532 tmp = r8a66597_read(r8a66597, td->pipe->pipectr);
1533 if ((tmp & INBUFM) == 0) {
1534 disable_irq_empty(r8a66597, pipenum);
1535 pipe_irq_disable(r8a66597, pipenum);
1536 finish_request(r8a66597, td, pipenum, td->urb,
1543 static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
1550 mask = r8a66597_read(r8a66597, NRDYSTS)
1551 & r8a66597_read(r8a66597, NRDYENB);
1552 r8a66597_write(r8a66597, ~mask, NRDYSTS);
1554 cfifo_change(r8a66597, 0);
1555 status = get_urb_error(r8a66597, 0);
1556 pipe_irq_disable(r8a66597, 0);
1557 check_next_phase(r8a66597, status);
1560 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1561 check = 1 << pipenum;
1563 struct r8a66597_td *td;
1564 td = r8a66597_get_td(r8a66597, pipenum);
1568 status = get_urb_error(r8a66597, pipenum);
1569 pipe_irq_disable(r8a66597, pipenum);
1570 pipe_stop(r8a66597, td->pipe);
1571 finish_request(r8a66597, td, pipenum, td->urb, status);
1576 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
1578 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1579 u16 intsts0, intsts1, intsts2;
1580 u16 intenb0, intenb1, intenb2;
1581 u16 mask0, mask1, mask2;
1584 spin_lock(&r8a66597->lock);
1586 intsts0 = r8a66597_read(r8a66597, INTSTS0);
1587 intsts1 = r8a66597_read(r8a66597, INTSTS1);
1588 intsts2 = r8a66597_read(r8a66597, INTSTS2);
1589 intenb0 = r8a66597_read(r8a66597, INTENB0);
1590 intenb1 = r8a66597_read(r8a66597, INTENB1);
1591 intenb2 = r8a66597_read(r8a66597, INTENB2);
1593 mask2 = intsts2 & intenb2;
1594 mask1 = intsts1 & intenb1;
1595 mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
1597 if (mask2 & ATTCH) {
1598 r8a66597_write(r8a66597, ~ATTCH, INTSTS2);
1599 r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
1601 /* start usb bus sampling */
1602 start_root_hub_sampling(r8a66597, 1, 1);
1605 r8a66597_write(r8a66597, ~DTCH, INTSTS2);
1606 r8a66597_bclr(r8a66597, DTCHE, INTENB2);
1607 r8a66597_usb_disconnect(r8a66597, 1);
1612 if (mask1 & ATTCH) {
1613 r8a66597_write(r8a66597, ~ATTCH, INTSTS1);
1614 r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
1616 /* start usb bus sampling */
1617 start_root_hub_sampling(r8a66597, 0, 1);
1620 r8a66597_write(r8a66597, ~DTCH, INTSTS1);
1621 r8a66597_bclr(r8a66597, DTCHE, INTENB1);
1622 r8a66597_usb_disconnect(r8a66597, 0);
1625 r8a66597_write(r8a66597, ~SIGN, INTSTS1);
1626 status = get_urb_error(r8a66597, 0);
1627 check_next_phase(r8a66597, status);
1630 r8a66597_write(r8a66597, ~SACK, INTSTS1);
1631 check_next_phase(r8a66597, 0);
1636 irq_pipe_ready(r8a66597);
1638 irq_pipe_empty(r8a66597);
1640 irq_pipe_nrdy(r8a66597);
1643 spin_unlock(&r8a66597->lock);
1647 /* this function must be called with interrupt disabled */
1648 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port)
1651 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1653 if (rh->port & (1 << USB_PORT_FEAT_RESET)) {
1654 unsigned long dvstctr_reg = get_dvstctr_reg(port);
1656 tmp = r8a66597_read(r8a66597, dvstctr_reg);
1657 if ((tmp & USBRST) == USBRST) {
1658 r8a66597_mdfy(r8a66597, UACT, USBRST | UACT,
1660 r8a66597_root_hub_start_polling(r8a66597);
1662 r8a66597_usb_connect(r8a66597, port);
1665 if (!(rh->port & (1 << USB_PORT_FEAT_CONNECTION))) {
1666 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
1667 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
1670 if (rh->scount > 0) {
1671 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1672 if (tmp == rh->old_syssts) {
1674 if (rh->scount == 0)
1675 r8a66597_check_syssts(r8a66597, port, tmp);
1677 r8a66597_root_hub_start_polling(r8a66597);
1679 rh->scount = R8A66597_MAX_SAMPLING;
1680 rh->old_syssts = tmp;
1681 r8a66597_root_hub_start_polling(r8a66597);
1686 static void r8a66597_interval_timer(unsigned long _r8a66597)
1688 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1689 unsigned long flags;
1691 struct r8a66597_td *td;
1693 spin_lock_irqsave(&r8a66597->lock, flags);
1695 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1696 if (!(r8a66597->interval_map & (1 << pipenum)))
1698 if (timer_pending(&r8a66597->interval_timer[pipenum]))
1701 td = r8a66597_get_td(r8a66597, pipenum);
1703 start_transfer(r8a66597, td);
1706 spin_unlock_irqrestore(&r8a66597->lock, flags);
1709 static void r8a66597_td_timer(unsigned long _r8a66597)
1711 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1712 unsigned long flags;
1714 struct r8a66597_td *td, *new_td = NULL;
1715 struct r8a66597_pipe *pipe;
1717 spin_lock_irqsave(&r8a66597->lock, flags);
1718 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1719 if (!(r8a66597->timeout_map & (1 << pipenum)))
1721 if (timer_pending(&r8a66597->td_timer[pipenum]))
1724 td = r8a66597_get_td(r8a66597, pipenum);
1726 r8a66597->timeout_map &= ~(1 << pipenum);
1730 if (td->urb->actual_length) {
1731 set_td_timer(r8a66597, td);
1736 pipe_stop(r8a66597, pipe);
1740 list_move_tail(&new_td->queue,
1741 &r8a66597->pipe_queue[pipenum]);
1742 new_td = r8a66597_get_td(r8a66597, pipenum);
1747 } while (td != new_td && td->address == new_td->address);
1749 start_transfer(r8a66597, new_td);
1752 r8a66597->timeout_map &= ~(1 << pipenum);
1754 set_td_timer(r8a66597, new_td);
1757 spin_unlock_irqrestore(&r8a66597->lock, flags);
1760 static void r8a66597_timer(unsigned long _r8a66597)
1762 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1763 unsigned long flags;
1765 spin_lock_irqsave(&r8a66597->lock, flags);
1767 r8a66597_root_hub_control(r8a66597, 0);
1768 r8a66597_root_hub_control(r8a66597, 1);
1770 spin_unlock_irqrestore(&r8a66597->lock, flags);
1773 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
1775 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
1777 if (dev && dev->address && dev->state != USB_STATE_CONFIGURED &&
1778 (urb->dev->state == USB_STATE_CONFIGURED))
1784 static int r8a66597_start(struct usb_hcd *hcd)
1786 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1788 hcd->state = HC_STATE_RUNNING;
1789 return enable_controller(r8a66597);
1792 static void r8a66597_stop(struct usb_hcd *hcd)
1794 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1796 disable_controller(r8a66597);
1799 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
1801 unsigned int usb_address = usb_pipedevice(urb->pipe);
1802 u16 root_port, hub_port;
1804 if (usb_address == 0) {
1805 get_port_number(urb->dev->devpath,
1806 &root_port, &hub_port);
1807 set_devadd_reg(r8a66597, 0,
1808 get_r8a66597_usb_speed(urb->dev->speed),
1809 get_parent_r8a66597_address(r8a66597, urb->dev),
1810 hub_port, root_port);
1814 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
1816 struct usb_host_endpoint *hep)
1818 struct r8a66597_td *td;
1821 td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC);
1825 pipenum = r8a66597_get_pipenum(urb, hep);
1826 td->pipenum = pipenum;
1827 td->pipe = hep->hcpriv;
1829 td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
1830 td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
1831 !usb_pipein(urb->pipe));
1832 if (usb_pipecontrol(urb->pipe))
1833 td->type = USB_PID_SETUP;
1834 else if (usb_pipein(urb->pipe))
1835 td->type = USB_PID_IN;
1837 td->type = USB_PID_OUT;
1838 INIT_LIST_HEAD(&td->queue);
1843 static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
1847 struct usb_host_endpoint *hep = urb->ep;
1848 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1849 struct r8a66597_td *td = NULL;
1850 int ret, request = 0;
1851 unsigned long flags;
1853 spin_lock_irqsave(&r8a66597->lock, flags);
1854 if (!get_urb_to_r8a66597_dev(r8a66597, urb)) {
1856 goto error_not_linked;
1859 ret = usb_hcd_link_urb_to_ep(hcd, urb);
1861 goto error_not_linked;
1864 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe),
1870 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA);
1871 if (usb_pipeendpoint(urb->pipe))
1872 init_pipe_info(r8a66597, urb, hep, &hep->desc);
1875 if (unlikely(check_pipe_config(r8a66597, urb)))
1876 init_pipe_config(r8a66597, urb);
1878 set_address_zero(r8a66597, urb);
1879 td = r8a66597_make_td(r8a66597, urb, hep);
1884 if (list_empty(&r8a66597->pipe_queue[td->pipenum]))
1886 list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]);
1890 if (td->pipe->info.timer_interval) {
1891 r8a66597->interval_map |= 1 << td->pipenum;
1892 mod_timer(&r8a66597->interval_timer[td->pipenum],
1893 jiffies + msecs_to_jiffies(
1894 td->pipe->info.timer_interval));
1896 ret = start_transfer(r8a66597, td);
1898 list_del(&td->queue);
1903 set_td_timer(r8a66597, td);
1907 usb_hcd_unlink_urb_from_ep(hcd, urb);
1909 spin_unlock_irqrestore(&r8a66597->lock, flags);
1913 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
1916 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1917 struct r8a66597_td *td;
1918 unsigned long flags;
1921 spin_lock_irqsave(&r8a66597->lock, flags);
1922 rc = usb_hcd_check_unlink_urb(hcd, urb, status);
1928 pipe_stop(r8a66597, td->pipe);
1929 pipe_irq_disable(r8a66597, td->pipenum);
1930 disable_irq_empty(r8a66597, td->pipenum);
1931 finish_request(r8a66597, td, td->pipenum, urb, status);
1934 spin_unlock_irqrestore(&r8a66597->lock, flags);
1938 static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
1939 struct usb_host_endpoint *hep)
1941 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1942 struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv;
1943 struct r8a66597_td *td;
1944 struct urb *urb = NULL;
1946 unsigned long flags;
1950 pipenum = pipe->info.pipenum;
1958 spin_lock_irqsave(&r8a66597->lock, flags);
1959 pipe_stop(r8a66597, pipe);
1960 pipe_irq_disable(r8a66597, pipenum);
1961 disable_irq_empty(r8a66597, pipenum);
1962 td = r8a66597_get_td(r8a66597, pipenum);
1965 finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN);
1968 spin_unlock_irqrestore(&r8a66597->lock, flags);
1971 static int r8a66597_get_frame(struct usb_hcd *hcd)
1973 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1974 return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
1977 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map)
1981 if (udev->state == USB_STATE_CONFIGURED &&
1982 udev->parent && udev->parent->devnum > 1 &&
1983 udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB)
1984 map[udev->devnum/32] |= (1 << (udev->devnum % 32));
1986 for (chix = 0; chix < udev->maxchild; chix++) {
1987 struct usb_device *childdev = udev->children[chix];
1990 collect_usb_address_map(childdev, map);
1994 /* this function must be called with interrupt disabled */
1995 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597,
1998 struct r8a66597_device *dev;
1999 struct list_head *list = &r8a66597->child_device;
2001 list_for_each_entry(dev, list, device_list) {
2004 if (dev->usb_address != addr)
2010 err("get_r8a66597_device fail.(%d)\n", addr);
2014 static void update_usb_address_map(struct r8a66597 *r8a66597,
2015 struct usb_device *root_hub,
2020 unsigned long flags;
2022 for (i = 0; i < 4; i++) {
2023 diff = r8a66597->child_connect_map[i] ^ map[i];
2027 for (j = 0; j < 32; j++) {
2028 if (!(diff & (1 << j)))
2032 if (map[i] & (1 << j))
2033 set_child_connect_map(r8a66597, addr);
2035 struct r8a66597_device *dev;
2037 spin_lock_irqsave(&r8a66597->lock, flags);
2038 dev = get_r8a66597_device(r8a66597, addr);
2039 disable_r8a66597_pipe_all(r8a66597, dev);
2040 free_usb_address(r8a66597, dev);
2041 put_child_connect_map(r8a66597, addr);
2042 spin_unlock_irqrestore(&r8a66597->lock, flags);
2048 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597,
2049 struct usb_hcd *hcd)
2051 struct usb_bus *bus;
2052 unsigned long now_map[4];
2054 memset(now_map, 0, sizeof(now_map));
2056 list_for_each_entry(bus, &usb_bus_list, bus_list) {
2060 if (bus->busnum != hcd->self.busnum)
2063 collect_usb_address_map(bus->root_hub, now_map);
2064 update_usb_address_map(r8a66597, bus->root_hub, now_map);
2068 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf)
2070 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2071 unsigned long flags;
2074 r8a66597_check_detect_child(r8a66597, hcd);
2076 spin_lock_irqsave(&r8a66597->lock, flags);
2078 *buf = 0; /* initialize (no change) */
2080 for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++) {
2081 if (r8a66597->root_hub[i].port & 0xffff0000)
2082 *buf |= 1 << (i + 1);
2085 spin_unlock_irqrestore(&r8a66597->lock, flags);
2090 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597,
2091 struct usb_hub_descriptor *desc)
2093 desc->bDescriptorType = 0x29;
2094 desc->bHubContrCurrent = 0;
2095 desc->bNbrPorts = R8A66597_MAX_ROOT_HUB;
2096 desc->bDescLength = 9;
2097 desc->bPwrOn2PwrGood = 0;
2098 desc->wHubCharacteristics = cpu_to_le16(0x0011);
2099 desc->bitmap[0] = ((1 << R8A66597_MAX_ROOT_HUB) - 1) << 1;
2100 desc->bitmap[1] = ~0;
2103 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
2104 u16 wIndex, char *buf, u16 wLength)
2106 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2108 int port = (wIndex & 0x00FF) - 1;
2109 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2110 unsigned long flags;
2114 spin_lock_irqsave(&r8a66597->lock, flags);
2116 case ClearHubFeature:
2119 case C_HUB_OVER_CURRENT:
2120 case C_HUB_LOCAL_POWER:
2126 case ClearPortFeature:
2127 if (wIndex > R8A66597_MAX_ROOT_HUB)
2133 case USB_PORT_FEAT_ENABLE:
2134 rh->port &= (1 << USB_PORT_FEAT_POWER);
2136 case USB_PORT_FEAT_SUSPEND:
2138 case USB_PORT_FEAT_POWER:
2139 r8a66597_port_power(r8a66597, port, 0);
2141 case USB_PORT_FEAT_C_ENABLE:
2142 case USB_PORT_FEAT_C_SUSPEND:
2143 case USB_PORT_FEAT_C_CONNECTION:
2144 case USB_PORT_FEAT_C_OVER_CURRENT:
2145 case USB_PORT_FEAT_C_RESET:
2150 rh->port &= ~(1 << wValue);
2152 case GetHubDescriptor:
2153 r8a66597_hub_descriptor(r8a66597,
2154 (struct usb_hub_descriptor *)buf);
2160 if (wIndex > R8A66597_MAX_ROOT_HUB)
2162 *(__le32 *)buf = cpu_to_le32(rh->port);
2164 case SetPortFeature:
2165 if (wIndex > R8A66597_MAX_ROOT_HUB)
2171 case USB_PORT_FEAT_SUSPEND:
2173 case USB_PORT_FEAT_POWER:
2174 r8a66597_port_power(r8a66597, port, 1);
2175 rh->port |= (1 << USB_PORT_FEAT_POWER);
2177 case USB_PORT_FEAT_RESET: {
2178 struct r8a66597_device *dev = rh->dev;
2180 rh->port |= (1 << USB_PORT_FEAT_RESET);
2182 disable_r8a66597_pipe_all(r8a66597, dev);
2183 free_usb_address(r8a66597, dev);
2185 r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT,
2186 get_dvstctr_reg(port));
2187 mod_timer(&r8a66597->rh_timer,
2188 jiffies + msecs_to_jiffies(50));
2194 rh->port |= 1 << wValue;
2202 spin_unlock_irqrestore(&r8a66597->lock, flags);
2206 static struct hc_driver r8a66597_hc_driver = {
2207 .description = hcd_name,
2208 .hcd_priv_size = sizeof(struct r8a66597),
2209 .irq = r8a66597_irq,
2212 * generic hardware linkage
2216 .start = r8a66597_start,
2217 .stop = r8a66597_stop,
2220 * managing i/o requests and associated device resources
2222 .urb_enqueue = r8a66597_urb_enqueue,
2223 .urb_dequeue = r8a66597_urb_dequeue,
2224 .endpoint_disable = r8a66597_endpoint_disable,
2227 * periodic schedule support
2229 .get_frame_number = r8a66597_get_frame,
2234 .hub_status_data = r8a66597_hub_status_data,
2235 .hub_control = r8a66597_hub_control,
2238 #if defined(CONFIG_PM)
2239 static int r8a66597_suspend(struct platform_device *pdev, pm_message_t state)
2244 static int r8a66597_resume(struct platform_device *pdev)
2248 #else /* if defined(CONFIG_PM) */
2249 #define r8a66597_suspend NULL
2250 #define r8a66597_resume NULL
2253 static int __init_or_module r8a66597_remove(struct platform_device *pdev)
2255 struct r8a66597 *r8a66597 = dev_get_drvdata(&pdev->dev);
2256 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
2258 del_timer_sync(&r8a66597->rh_timer);
2259 usb_remove_hcd(hcd);
2260 iounmap((void *)r8a66597->reg);
2265 #define resource_len(r) (((r)->end - (r)->start) + 1)
2266 static int __init r8a66597_probe(struct platform_device *pdev)
2268 struct resource *res = NULL, *ires;
2270 void __iomem *reg = NULL;
2271 struct usb_hcd *hcd = NULL;
2272 struct r8a66597 *r8a66597;
2275 unsigned long irq_trigger;
2277 if (pdev->dev.dma_mask) {
2279 err("dma not support");
2283 res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
2287 err("platform_get_resource_byname error.");
2291 ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2294 err("platform_get_resource IORESOURCE_IRQ error.");
2299 irq_trigger = ires->flags & IRQF_TRIGGER_MASK;
2301 reg = ioremap(res->start, resource_len(res));
2304 err("ioremap error.");
2308 /* initialize hcd */
2309 hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
2312 err("Failed to create hcd");
2315 r8a66597 = hcd_to_r8a66597(hcd);
2316 memset(r8a66597, 0, sizeof(struct r8a66597));
2317 dev_set_drvdata(&pdev->dev, r8a66597);
2319 spin_lock_init(&r8a66597->lock);
2320 init_timer(&r8a66597->rh_timer);
2321 r8a66597->rh_timer.function = r8a66597_timer;
2322 r8a66597->rh_timer.data = (unsigned long)r8a66597;
2323 r8a66597->reg = (unsigned long)reg;
2325 for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
2326 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]);
2327 init_timer(&r8a66597->td_timer[i]);
2328 r8a66597->td_timer[i].function = r8a66597_td_timer;
2329 r8a66597->td_timer[i].data = (unsigned long)r8a66597;
2330 setup_timer(&r8a66597->interval_timer[i],
2331 r8a66597_interval_timer,
2332 (unsigned long)r8a66597);
2334 INIT_LIST_HEAD(&r8a66597->child_device);
2336 hcd->rsrc_start = res->start;
2338 /* irq_sense setting on cmdline takes precedence over resource
2339 * settings, so the introduction of irqflags in IRQ resourse
2340 * won't disturb existing setups */
2341 switch (irq_sense) {
2343 irq_trigger = IRQF_TRIGGER_LOW;
2346 irq_trigger = IRQF_TRIGGER_FALLING;
2350 irq_sense = (irq_trigger & IRQF_TRIGGER_LOW) ?
2354 irq_trigger = IRQF_TRIGGER_LOW;
2358 err("Unknown irq_sense value.");
2361 ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | irq_trigger);
2363 err("Failed to add hcd");
2376 static struct platform_driver r8a66597_driver = {
2377 .probe = r8a66597_probe,
2378 .remove = r8a66597_remove,
2379 .suspend = r8a66597_suspend,
2380 .resume = r8a66597_resume,
2382 .name = (char *) hcd_name,
2383 .owner = THIS_MODULE,
2387 static int __init r8a66597_init(void)
2392 printk(KERN_INFO KBUILD_MODNAME ": driver %s, %s\n", hcd_name,
2394 return platform_driver_register(&r8a66597_driver);
2396 module_init(r8a66597_init);
2398 static void __exit r8a66597_cleanup(void)
2400 platform_driver_unregister(&r8a66597_driver);
2402 module_exit(r8a66597_cleanup);