4 * Copyright (C) 2011 Renesas Solutions Corp.
5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 #include <linux/list.h>
19 #include <linux/module.h>
20 #include <linux/platform_device.h>
21 #include <linux/slab.h>
22 #include <linux/usb.h>
23 #include <linux/usb/hcd.h>
27 *** HARDWARE LIMITATION ***
29 * 1) renesas_usbhs has a limited number of controllable devices.
30 * it can control only 9 devices in generally.
31 * see DEVADDn / DCPMAXP / PIPEMAXP.
33 * 2) renesas_usbhs pipe number is limited.
34 * the pipe will be re-used for each devices.
35 * so, software should control DATA0/1 sequence of each devices.
43 * | udev 0 | --> it is used when set address
46 * +--------+ pipes are reused for each uep.
47 * | udev 1 |-+- [uep 0 (dcp) ] --+ pipe will be switched when
48 * +--------+ | | target device was changed
49 * +- [uep 1 (bulk)] --|---+ +--------------+
50 * | +--------------> | pipe0 (dcp) |
51 * +- [uep 2 (bulk)] --|---|---+ +--------------+
52 * | | | | pipe1 (isoc) |
53 * +--------+ | | | +--------------+
54 * | udev 2 |-+- [uep 0 (dcp) ] --+ +-- |------> | pipe2 (bulk) |
55 * +--------+ | | | | +--------------+
56 * +- [uep 1 (int) ] --|-+ | +------> | pipe3 (bulk) |
57 * | | | | +--------------+
58 * +--------+ | +-|---|------> | pipe4 (int) |
59 * | udev 3 |-+- [uep 0 (dcp) ] --+ | | +--------------+
60 * +--------+ | | | | .... |
61 * +- [uep 1 (bulk)] ------+ | | .... |
63 * +- [uep 2 (bulk)]-----------+
70 struct usbhsh_pipe_info
{
71 unsigned int usr_cnt
; /* see usbhsh_endpoint_alloc() */
74 struct usbhsh_request
{
77 struct list_head ureq_link
; /* see hpriv :: ureq_link_xxx */
80 struct usbhsh_device
{
81 struct usb_device
*usbv
;
82 struct list_head ep_list_head
; /* list of usbhsh_ep */
86 struct usbhs_pipe
*pipe
;
87 struct usbhsh_device
*udev
; /* attached udev */
88 struct list_head ep_list
; /* list to usbhsh_device */
93 #define USBHSH_DEVICE_MAX 10 /* see DEVADDn / DCPMAXP / PIPEMAXP */
94 #define USBHSH_PORT_MAX 7 /* see DEVADDn :: HUBPORT */
97 struct usbhs_pipe
*dcp
;
99 struct usbhsh_device udev
[USBHSH_DEVICE_MAX
];
101 struct usbhsh_pipe_info
*pipe_info
;
104 u32 port_stat
; /* USB_PORT_STAT_xxx */
106 struct completion setup_ack_done
;
108 /* see usbhsh_req_alloc/free */
109 struct list_head ureq_link_active
;
110 struct list_head ureq_link_free
;
114 static const char usbhsh_hcd_name
[] = "renesas_usbhs host";
119 #define usbhsh_priv_to_hpriv(priv) \
120 container_of(usbhs_mod_get(priv, USBHS_HOST), struct usbhsh_hpriv, mod)
122 #define __usbhsh_for_each_hpipe(start, pos, h, i) \
123 for (i = start, pos = (h)->hpipe + i; \
124 i < (h)->hpipe_size; \
125 i++, pos = (h)->hpipe + i)
127 #define usbhsh_for_each_hpipe(pos, hpriv, i) \
128 __usbhsh_for_each_hpipe(1, pos, hpriv, i)
130 #define usbhsh_for_each_hpipe_with_dcp(pos, hpriv, i) \
131 __usbhsh_for_each_hpipe(0, pos, hpriv, i)
133 #define __usbhsh_for_each_udev(start, pos, h, i) \
134 for (i = start, pos = (h)->udev + i; \
135 i < USBHSH_DEVICE_MAX; \
136 i++, pos = (h)->udev + i)
138 #define usbhsh_for_each_udev(pos, hpriv, i) \
139 __usbhsh_for_each_udev(1, pos, hpriv, i)
141 #define usbhsh_for_each_udev_with_dev0(pos, hpriv, i) \
142 __usbhsh_for_each_udev(0, pos, hpriv, i)
144 #define usbhsh_hcd_to_hpriv(h) (struct usbhsh_hpriv *)((h)->hcd_priv)
145 #define usbhsh_hcd_to_dev(h) ((h)->self.controller)
147 #define usbhsh_hpriv_to_priv(h) ((h)->mod.priv)
148 #define usbhsh_hpriv_to_dcp(h) ((h)->dcp)
149 #define usbhsh_hpriv_to_hcd(h) \
150 container_of((void *)h, struct usb_hcd, hcd_priv)
152 #define usbhsh_ep_to_uep(u) ((u)->hcpriv)
153 #define usbhsh_uep_to_pipe(u) ((u)->pipe)
154 #define usbhsh_uep_to_udev(u) ((u)->udev)
155 #define usbhsh_urb_to_ureq(u) ((u)->hcpriv)
156 #define usbhsh_urb_to_usbv(u) ((u)->dev)
158 #define usbhsh_usbv_to_udev(d) dev_get_drvdata(&(d)->dev)
160 #define usbhsh_udev_to_usbv(h) ((h)->usbv)
162 #define usbhsh_pipe_info(p) ((p)->mod_private)
164 #define usbhsh_device_number(h, d) ((int)((d) - (h)->udev))
165 #define usbhsh_device_nth(h, d) ((h)->udev + d)
166 #define usbhsh_device0(h) usbhsh_device_nth(h, 0)
168 #define usbhsh_port_stat_init(h) ((h)->port_stat = 0)
169 #define usbhsh_port_stat_set(h, s) ((h)->port_stat |= (s))
170 #define usbhsh_port_stat_clear(h, s) ((h)->port_stat &= ~(s))
171 #define usbhsh_port_stat_get(h) ((h)->port_stat)
173 #define usbhsh_pkt_to_req(p) \
174 container_of((void *)p, struct usbhsh_request, pkt)
179 static void usbhsh_req_list_init(struct usbhsh_hpriv
*hpriv
)
181 INIT_LIST_HEAD(&hpriv
->ureq_link_active
);
182 INIT_LIST_HEAD(&hpriv
->ureq_link_free
);
185 static void usbhsh_req_list_quit(struct usbhsh_hpriv
*hpriv
)
187 struct usb_hcd
*hcd
= usbhsh_hpriv_to_hcd(hpriv
);
188 struct device
*dev
= usbhsh_hcd_to_dev(hcd
);
189 struct usbhsh_request
*ureq
, *next
;
191 /* kfree all active ureq */
192 list_for_each_entry_safe(ureq
, next
,
193 &hpriv
->ureq_link_active
,
195 dev_err(dev
, "active ureq (%p) is force freed\n", ureq
);
199 /* kfree all free ureq */
200 list_for_each_entry_safe(ureq
, next
, &hpriv
->ureq_link_free
, ureq_link
)
204 static struct usbhsh_request
*usbhsh_req_alloc(struct usbhsh_hpriv
*hpriv
,
208 struct usbhsh_request
*ureq
;
209 struct usbhs_priv
*priv
= usbhsh_hpriv_to_priv(hpriv
);
210 struct device
*dev
= usbhs_priv_to_dev(priv
);
212 if (list_empty(&hpriv
->ureq_link_free
)) {
214 * create new one if there is no free ureq
216 ureq
= kzalloc(sizeof(struct usbhsh_request
), mem_flags
);
218 INIT_LIST_HEAD(&ureq
->ureq_link
);
221 * reuse "free" ureq if exist
223 ureq
= list_entry(hpriv
->ureq_link_free
.next
,
224 struct usbhsh_request
,
227 list_del_init(&ureq
->ureq_link
);
231 dev_err(dev
, "ureq alloc fail\n");
235 usbhs_pkt_init(&ureq
->pkt
);
238 * push it to "active" list
240 list_add_tail(&ureq
->ureq_link
, &hpriv
->ureq_link_active
);
246 static void usbhsh_req_free(struct usbhsh_hpriv
*hpriv
,
247 struct usbhsh_request
*ureq
)
249 struct usbhs_pkt
*pkt
= &ureq
->pkt
;
254 * removed from "active" list,
255 * and push it to "free" list
258 list_del_init(&ureq
->ureq_link
);
259 list_add_tail(&ureq
->ureq_link
, &hpriv
->ureq_link_free
);
266 static int usbhsh_device_has_endpoint(struct usbhsh_device
*udev
)
268 return !list_empty(&udev
->ep_list_head
);
271 static struct usbhsh_device
*usbhsh_device_alloc(struct usbhsh_hpriv
*hpriv
,
274 struct usbhsh_device
*udev
= NULL
;
275 struct usb_hcd
*hcd
= usbhsh_hpriv_to_hcd(hpriv
);
276 struct device
*dev
= usbhsh_hcd_to_dev(hcd
);
277 struct usb_device
*usbv
= usbhsh_urb_to_usbv(urb
);
278 struct usbhs_priv
*priv
= usbhsh_hpriv_to_priv(hpriv
);
284 if (0 == usb_pipedevice(urb
->pipe
)) {
285 udev
= usbhsh_device0(hpriv
);
286 goto usbhsh_device_find
;
292 usbhsh_for_each_udev(udev
, hpriv
, i
) {
293 if (usbhsh_udev_to_usbv(udev
))
295 goto usbhsh_device_find
;
298 dev_err(dev
, "no free usbhsh_device\n");
303 if (usbhsh_device_has_endpoint(udev
))
304 dev_warn(dev
, "udev have old endpoint\n");
306 /* uep will be attached */
307 INIT_LIST_HEAD(&udev
->ep_list_head
);
310 * usbhsh_usbv_to_udev()
311 * usbhsh_udev_to_usbv()
314 dev_set_drvdata(&usbv
->dev
, udev
);
317 /* set device config */
318 usbhs_set_device_speed(priv
,
319 usbhsh_device_number(hpriv
, udev
),
320 usbhsh_device_number(hpriv
, udev
),
321 0, /* FIXME no parent */
324 dev_dbg(dev
, "%s [%d](%p)\n", __func__
,
325 usbhsh_device_number(hpriv
, udev
), udev
);
330 static void usbhsh_device_free(struct usbhsh_hpriv
*hpriv
,
331 struct usbhsh_device
*udev
)
333 struct usb_hcd
*hcd
= usbhsh_hpriv_to_hcd(hpriv
);
334 struct device
*dev
= usbhsh_hcd_to_dev(hcd
);
335 struct usb_device
*usbv
= usbhsh_udev_to_usbv(udev
);
337 dev_dbg(dev
, "%s [%d](%p)\n", __func__
,
338 usbhsh_device_number(hpriv
, udev
), udev
);
340 if (usbhsh_device_has_endpoint(udev
))
341 dev_warn(dev
, "udev still have endpoint\n");
344 * usbhsh_usbv_to_udev()
345 * usbhsh_udev_to_usbv()
348 dev_set_drvdata(&usbv
->dev
, NULL
);
355 struct usbhsh_ep
*usbhsh_endpoint_alloc(struct usbhsh_hpriv
*hpriv
,
356 struct usbhsh_device
*udev
,
357 struct usb_host_endpoint
*ep
,
360 struct usbhs_priv
*priv
= usbhsh_hpriv_to_priv(hpriv
);
361 struct usb_hcd
*hcd
= usbhsh_hpriv_to_hcd(hpriv
);
362 struct usbhsh_ep
*uep
;
363 struct usbhsh_pipe_info
*info
;
364 struct usbhs_pipe
*pipe
, *best_pipe
;
365 struct device
*dev
= usbhsh_hcd_to_dev(hcd
);
366 struct usb_endpoint_descriptor
*desc
= &ep
->desc
;
368 unsigned int min_usr
;
370 uep
= kzalloc(sizeof(struct usbhsh_ep
), mem_flags
);
372 dev_err(dev
, "usbhsh_ep alloc fail\n");
375 type
= usb_endpoint_type(desc
);
378 * find best pipe for endpoint
380 * HARDWARE LIMITATION
384 usbhs_for_each_pipe_with_dcp(pipe
, priv
, i
) {
385 if (!usbhs_pipe_type_is(pipe
, type
))
388 info
= usbhsh_pipe_info(pipe
);
390 if (min_usr
> info
->usr_cnt
) {
391 min_usr
= info
->usr_cnt
;
396 if (unlikely(!best_pipe
)) {
397 dev_err(dev
, "couldn't find best pipe\n");
405 uep
->pipe
= best_pipe
;
406 uep
->maxp
= usb_endpoint_maxp(desc
);
407 usbhsh_uep_to_udev(uep
) = udev
;
408 usbhsh_ep_to_uep(ep
) = uep
;
411 * update pipe user count
413 info
= usbhsh_pipe_info(best_pipe
);
416 /* init this endpoint, and attach it to udev */
417 INIT_LIST_HEAD(&uep
->ep_list
);
418 list_add_tail(&uep
->ep_list
, &udev
->ep_list_head
);
421 * usbhs_pipe_config_update() should be called after
422 * usbhs_device_config()
426 usbhs_pipe_config_update(uep
->pipe
,
427 usbhsh_device_number(hpriv
, udev
),
428 usb_endpoint_num(desc
),
431 dev_dbg(dev
, "%s [%d-%s](%p)\n", __func__
,
432 usbhsh_device_number(hpriv
, udev
),
433 usbhs_pipe_name(pipe
), uep
);
438 void usbhsh_endpoint_free(struct usbhsh_hpriv
*hpriv
,
439 struct usb_host_endpoint
*ep
)
441 struct usbhs_priv
*priv
= usbhsh_hpriv_to_priv(hpriv
);
442 struct device
*dev
= usbhs_priv_to_dev(priv
);
443 struct usbhsh_ep
*uep
= usbhsh_ep_to_uep(ep
);
444 struct usbhsh_pipe_info
*info
;
449 dev_dbg(dev
, "%s [%d-%s](%p)\n", __func__
,
450 usbhsh_device_number(hpriv
, usbhsh_uep_to_udev(uep
)),
451 usbhs_pipe_name(uep
->pipe
), uep
);
453 info
= usbhsh_pipe_info(uep
->pipe
);
456 /* remove this endpoint from udev */
457 list_del_init(&uep
->ep_list
);
459 usbhsh_uep_to_udev(uep
) = NULL
;
460 usbhsh_ep_to_uep(ep
) = NULL
;
468 static void usbhsh_queue_done(struct usbhs_priv
*priv
, struct usbhs_pkt
*pkt
)
470 struct usbhsh_request
*ureq
= usbhsh_pkt_to_req(pkt
);
471 struct usbhsh_hpriv
*hpriv
= usbhsh_priv_to_hpriv(priv
);
472 struct usb_hcd
*hcd
= usbhsh_hpriv_to_hcd(hpriv
);
473 struct urb
*urb
= ureq
->urb
;
474 struct device
*dev
= usbhs_priv_to_dev(priv
);
476 dev_dbg(dev
, "%s\n", __func__
);
479 dev_warn(dev
, "pkt doesn't have urb\n");
483 urb
->actual_length
= pkt
->actual
;
484 usbhsh_req_free(hpriv
, ureq
);
485 usbhsh_urb_to_ureq(urb
) = NULL
;
487 usb_hcd_unlink_urb_from_ep(hcd
, urb
);
488 usb_hcd_giveback_urb(hcd
, urb
, 0);
491 static int usbhsh_queue_push(struct usb_hcd
*hcd
,
492 struct usbhs_pipe
*pipe
,
495 struct usbhsh_request
*ureq
= usbhsh_urb_to_ureq(urb
);
496 struct usbhs_pkt
*pkt
= &ureq
->pkt
;
497 struct device
*dev
= usbhsh_hcd_to_dev(hcd
);
501 if (usb_pipeisoc(urb
->pipe
)) {
502 dev_err(dev
, "pipe iso is not supported now\n");
506 if (usb_pipein(urb
->pipe
))
507 pipe
->handler
= &usbhs_fifo_pio_pop_handler
;
509 pipe
->handler
= &usbhs_fifo_pio_push_handler
;
511 buf
= (void *)(urb
->transfer_buffer
+ urb
->actual_length
);
512 len
= urb
->transfer_buffer_length
- urb
->actual_length
;
514 dev_dbg(dev
, "%s\n", __func__
);
515 usbhs_pkt_push(pipe
, pkt
, usbhsh_queue_done
,
516 buf
, len
, (urb
->transfer_flags
& URB_ZERO_PACKET
));
517 usbhs_pkt_start(pipe
);
525 static int usbhsh_is_request_address(struct urb
*urb
)
527 struct usb_ctrlrequest
*cmd
;
529 cmd
= (struct usb_ctrlrequest
*)urb
->setup_packet
;
531 if ((DeviceOutRequest
== cmd
->bRequestType
<< 8) &&
532 (USB_REQ_SET_ADDRESS
== cmd
->bRequest
))
538 static void usbhsh_setup_stage_packet_push(struct usbhsh_hpriv
*hpriv
,
540 struct usbhs_pipe
*pipe
)
542 struct usbhs_priv
*priv
= usbhsh_hpriv_to_priv(hpriv
);
543 struct usb_ctrlrequest req
;
544 struct device
*dev
= usbhs_priv_to_dev(priv
);
547 * wait setup packet ACK
549 * usbhsh_irq_setup_ack()
550 * usbhsh_irq_setup_err()
552 init_completion(&hpriv
->setup_ack_done
);
554 /* copy original request */
555 memcpy(&req
, urb
->setup_packet
, sizeof(struct usb_ctrlrequest
));
558 * renesas_usbhs can not use original usb address.
559 * see HARDWARE LIMITATION.
560 * modify usb address here.
562 if (usbhsh_is_request_address(urb
)) {
565 dev_dbg(dev
, "create new address - %d\n", req
.wValue
);
569 usbhs_usbreq_set_val(priv
, &req
);
572 * wait setup packet ACK
574 wait_for_completion(&hpriv
->setup_ack_done
);
576 dev_dbg(dev
, "%s done\n", __func__
);
582 static void usbhsh_data_stage_packet_done(struct usbhs_priv
*priv
,
583 struct usbhs_pkt
*pkt
)
585 struct usbhsh_request
*ureq
= usbhsh_pkt_to_req(pkt
);
586 struct usbhsh_hpriv
*hpriv
= usbhsh_priv_to_hpriv(priv
);
587 struct urb
*urb
= ureq
->urb
;
589 /* this ureq was connected to urb when usbhsh_urb_enqueue() */
591 usbhsh_req_free(hpriv
, ureq
);
592 usbhsh_urb_to_ureq(urb
) = NULL
;
595 static void usbhsh_data_stage_packet_push(struct usbhsh_hpriv
*hpriv
,
597 struct usbhs_pipe
*pipe
)
599 struct usbhsh_request
*ureq
;
600 struct usbhs_pkt
*pkt
;
605 * data stage uses ureq which is connected to urb
606 * see usbhsh_urb_enqueue() :: alloc new request.
607 * it will be freed in usbhsh_data_stage_packet_done()
609 ureq
= usbhsh_urb_to_ureq(urb
);
612 if (usb_pipein(urb
->pipe
))
613 pipe
->handler
= &usbhs_dcp_data_stage_in_handler
;
615 pipe
->handler
= &usbhs_dcp_data_stage_out_handler
;
617 usbhs_pkt_push(pipe
, pkt
,
618 usbhsh_data_stage_packet_done
,
619 urb
->transfer_buffer
,
620 urb
->transfer_buffer_length
,
621 (urb
->transfer_flags
& URB_ZERO_PACKET
));
627 static void usbhsh_status_stage_packet_push(struct usbhsh_hpriv
*hpriv
,
629 struct usbhs_pipe
*pipe
)
631 struct usbhsh_request
*ureq
;
632 struct usbhs_pkt
*pkt
;
637 * status stage uses allocated ureq.
638 * it will be freed on usbhsh_queue_done()
640 ureq
= usbhsh_req_alloc(hpriv
, urb
, GFP_KERNEL
);
643 if (usb_pipein(urb
->pipe
))
644 pipe
->handler
= &usbhs_dcp_status_stage_in_handler
;
646 pipe
->handler
= &usbhs_dcp_status_stage_out_handler
;
648 usbhs_pkt_push(pipe
, pkt
,
651 urb
->transfer_buffer_length
,
655 static int usbhsh_dcp_queue_push(struct usb_hcd
*hcd
,
656 struct usbhsh_hpriv
*hpriv
,
657 struct usbhs_pipe
*pipe
,
660 struct device
*dev
= usbhsh_hcd_to_dev(hcd
);
662 dev_dbg(dev
, "%s\n", __func__
);
667 * usbhsh_send_setup_stage_packet() wait SACK/SIGN
669 usbhsh_setup_stage_packet_push(hpriv
, urb
, pipe
);
674 * It is pushed only when urb has buffer.
676 if (urb
->transfer_buffer_length
)
677 usbhsh_data_stage_packet_push(hpriv
, urb
, pipe
);
682 usbhsh_status_stage_packet_push(hpriv
, urb
, pipe
);
685 * start pushed packets
687 usbhs_pkt_start(pipe
);
695 static int usbhsh_dma_map_ctrl(struct usbhs_pkt
*pkt
, int map
)
703 static int usbhsh_host_start(struct usb_hcd
*hcd
)
708 static void usbhsh_host_stop(struct usb_hcd
*hcd
)
712 static int usbhsh_urb_enqueue(struct usb_hcd
*hcd
,
716 struct usbhsh_hpriv
*hpriv
= usbhsh_hcd_to_hpriv(hcd
);
717 struct usbhs_priv
*priv
= usbhsh_hpriv_to_priv(hpriv
);
718 struct device
*dev
= usbhs_priv_to_dev(priv
);
719 struct usb_device
*usbv
= usbhsh_urb_to_usbv(urb
);
720 struct usb_host_endpoint
*ep
= urb
->ep
;
721 struct usbhsh_request
*ureq
;
722 struct usbhsh_device
*udev
, *new_udev
= NULL
;
723 struct usbhs_pipe
*pipe
;
724 struct usbhsh_ep
*uep
;
728 dev_dbg(dev
, "%s (%s)\n",
729 __func__
, usb_pipein(urb
->pipe
) ? "in" : "out");
731 ret
= usb_hcd_link_urb_to_ep(hcd
, urb
);
733 goto usbhsh_urb_enqueue_error_not_linked
;
738 udev
= usbhsh_usbv_to_udev(usbv
);
740 new_udev
= usbhsh_device_alloc(hpriv
, urb
);
742 goto usbhsh_urb_enqueue_error_not_linked
;
750 uep
= usbhsh_ep_to_uep(ep
);
752 uep
= usbhsh_endpoint_alloc(hpriv
, udev
, ep
, mem_flags
);
754 goto usbhsh_urb_enqueue_error_free_device
;
756 pipe
= usbhsh_uep_to_pipe(uep
);
761 ureq
= usbhsh_req_alloc(hpriv
, urb
, mem_flags
);
762 if (unlikely(!ureq
)) {
764 goto usbhsh_urb_enqueue_error_free_endpoint
;
766 usbhsh_urb_to_ureq(urb
) = ureq
;
771 if (usb_pipecontrol(urb
->pipe
))
772 usbhsh_dcp_queue_push(hcd
, hpriv
, pipe
, urb
);
774 usbhsh_queue_push(hcd
, pipe
, urb
);
778 usbhsh_urb_enqueue_error_free_endpoint
:
779 usbhsh_endpoint_free(hpriv
, ep
);
780 usbhsh_urb_enqueue_error_free_device
:
782 usbhsh_device_free(hpriv
, new_udev
);
783 usbhsh_urb_enqueue_error_not_linked
:
785 dev_dbg(dev
, "%s error\n", __func__
);
790 static int usbhsh_urb_dequeue(struct usb_hcd
*hcd
, struct urb
*urb
, int status
)
792 struct usbhsh_hpriv
*hpriv
= usbhsh_hcd_to_hpriv(hcd
);
793 struct usbhsh_request
*ureq
= usbhsh_urb_to_ureq(urb
);
796 usbhsh_req_free(hpriv
, ureq
);
797 usbhsh_urb_to_ureq(urb
) = NULL
;
803 static void usbhsh_endpoint_disable(struct usb_hcd
*hcd
,
804 struct usb_host_endpoint
*ep
)
806 struct usbhsh_ep
*uep
= usbhsh_ep_to_uep(ep
);
807 struct usbhsh_device
*udev
;
808 struct usbhsh_hpriv
*hpriv
;
811 * this function might be called manytimes by same hcd/ep
812 * in-endpoitn == out-endpoint if ep == dcp.
817 udev
= usbhsh_uep_to_udev(uep
);
818 hpriv
= usbhsh_hcd_to_hpriv(hcd
);
820 usbhsh_endpoint_free(hpriv
, ep
);
824 * if there is no endpoint,
827 if (!usbhsh_device_has_endpoint(udev
))
828 usbhsh_device_free(hpriv
, udev
);
831 static int usbhsh_hub_status_data(struct usb_hcd
*hcd
, char *buf
)
833 struct usbhsh_hpriv
*hpriv
= usbhsh_hcd_to_hpriv(hcd
);
834 struct usbhs_priv
*priv
= usbhsh_hpriv_to_priv(hpriv
);
835 struct device
*dev
= usbhs_priv_to_dev(priv
);
836 int roothub_id
= 1; /* only 1 root hub */
839 * does port stat was changed ?
840 * check USB_PORT_STAT_C_xxx << 16
842 if (usbhsh_port_stat_get(hpriv
) & 0xFFFF0000)
843 *buf
= (1 << roothub_id
);
847 dev_dbg(dev
, "%s (%02x)\n", __func__
, *buf
);
852 static int __usbhsh_hub_hub_feature(struct usbhsh_hpriv
*hpriv
,
853 u16 typeReq
, u16 wValue
,
854 u16 wIndex
, char *buf
, u16 wLength
)
856 struct usbhs_priv
*priv
= usbhsh_hpriv_to_priv(hpriv
);
857 struct device
*dev
= usbhs_priv_to_dev(priv
);
860 case C_HUB_OVER_CURRENT
:
861 case C_HUB_LOCAL_POWER
:
862 dev_dbg(dev
, "%s :: C_HUB_xx\n", __func__
);
869 static int __usbhsh_hub_port_feature(struct usbhsh_hpriv
*hpriv
,
870 u16 typeReq
, u16 wValue
,
871 u16 wIndex
, char *buf
, u16 wLength
)
873 struct usbhs_priv
*priv
= usbhsh_hpriv_to_priv(hpriv
);
874 struct device
*dev
= usbhs_priv_to_dev(priv
);
875 int enable
= (typeReq
== SetPortFeature
);
876 int speed
, i
, timeout
= 128;
877 int roothub_id
= 1; /* only 1 root hub */
880 if (wIndex
> roothub_id
|| wLength
!= 0)
885 case USB_PORT_FEAT_POWER
:
886 usbhs_vbus_ctrl(priv
, enable
);
887 dev_dbg(dev
, "%s :: USB_PORT_FEAT_POWER\n", __func__
);
890 case USB_PORT_FEAT_ENABLE
:
891 case USB_PORT_FEAT_SUSPEND
:
892 case USB_PORT_FEAT_C_ENABLE
:
893 case USB_PORT_FEAT_C_SUSPEND
:
894 case USB_PORT_FEAT_C_CONNECTION
:
895 case USB_PORT_FEAT_C_OVER_CURRENT
:
896 case USB_PORT_FEAT_C_RESET
:
897 dev_dbg(dev
, "%s :: USB_PORT_FEAT_xxx\n", __func__
);
900 case USB_PORT_FEAT_RESET
:
904 usbhsh_port_stat_clear(hpriv
,
905 USB_PORT_STAT_HIGH_SPEED
|
906 USB_PORT_STAT_LOW_SPEED
);
908 usbhs_bus_send_reset(priv
);
910 usbhs_bus_send_sof_enable(priv
);
912 for (i
= 0; i
< timeout
; i
++) {
913 switch (usbhs_bus_get_speed(priv
)) {
915 speed
= USB_PORT_STAT_LOW_SPEED
;
916 goto got_usb_bus_speed
;
918 speed
= USB_PORT_STAT_HIGH_SPEED
;
919 goto got_usb_bus_speed
;
922 goto got_usb_bus_speed
;
930 usbhsh_port_stat_set(hpriv
, speed
);
931 usbhsh_port_stat_set(hpriv
, USB_PORT_STAT_ENABLE
);
933 dev_dbg(dev
, "%s :: USB_PORT_FEAT_RESET (speed = %d)\n",
936 /* status change is not needed */
943 /* set/clear status */
945 usbhsh_port_stat_set(hpriv
, (1 << wValue
));
947 usbhsh_port_stat_clear(hpriv
, (1 << wValue
));
952 static int __usbhsh_hub_get_status(struct usbhsh_hpriv
*hpriv
,
953 u16 typeReq
, u16 wValue
,
954 u16 wIndex
, char *buf
, u16 wLength
)
956 struct usbhs_priv
*priv
= usbhsh_hpriv_to_priv(hpriv
);
957 struct usb_hub_descriptor
*desc
= (struct usb_hub_descriptor
*)buf
;
958 struct device
*dev
= usbhs_priv_to_dev(priv
);
959 int roothub_id
= 1; /* only 1 root hub */
963 dev_dbg(dev
, "%s :: GetHubStatus\n", __func__
);
969 if (wIndex
!= roothub_id
)
972 dev_dbg(dev
, "%s :: GetPortStatus\n", __func__
);
973 *(__le32
*)buf
= cpu_to_le32(usbhsh_port_stat_get(hpriv
));
976 case GetHubDescriptor
:
977 desc
->bDescriptorType
= 0x29;
978 desc
->bHubContrCurrent
= 0;
979 desc
->bNbrPorts
= roothub_id
;
980 desc
->bDescLength
= 9;
981 desc
->bPwrOn2PwrGood
= 0;
982 desc
->wHubCharacteristics
= cpu_to_le16(0x0011);
983 desc
->u
.hs
.DeviceRemovable
[0] = (roothub_id
<< 1);
984 desc
->u
.hs
.DeviceRemovable
[1] = ~0;
985 dev_dbg(dev
, "%s :: GetHubDescriptor\n", __func__
);
992 static int usbhsh_hub_control(struct usb_hcd
*hcd
, u16 typeReq
, u16 wValue
,
993 u16 wIndex
, char *buf
, u16 wLength
)
995 struct usbhsh_hpriv
*hpriv
= usbhsh_hcd_to_hpriv(hcd
);
996 struct usbhs_priv
*priv
= usbhsh_hpriv_to_priv(hpriv
);
997 struct device
*dev
= usbhs_priv_to_dev(priv
);
1003 case ClearHubFeature
:
1005 ret
= __usbhsh_hub_hub_feature(hpriv
, typeReq
,
1006 wValue
, wIndex
, buf
, wLength
);
1010 case SetPortFeature
:
1011 case ClearPortFeature
:
1012 ret
= __usbhsh_hub_port_feature(hpriv
, typeReq
,
1013 wValue
, wIndex
, buf
, wLength
);
1019 case GetHubDescriptor
:
1020 ret
= __usbhsh_hub_get_status(hpriv
, typeReq
,
1021 wValue
, wIndex
, buf
, wLength
);
1025 dev_dbg(dev
, "typeReq = %x, ret = %d, port_stat = %x\n",
1026 typeReq
, ret
, usbhsh_port_stat_get(hpriv
));
1031 static struct hc_driver usbhsh_driver
= {
1032 .description
= usbhsh_hcd_name
,
1033 .hcd_priv_size
= sizeof(struct usbhsh_hpriv
),
1036 * generic hardware linkage
1040 .start
= usbhsh_host_start
,
1041 .stop
= usbhsh_host_stop
,
1044 * managing i/o requests and associated device resources
1046 .urb_enqueue
= usbhsh_urb_enqueue
,
1047 .urb_dequeue
= usbhsh_urb_dequeue
,
1048 .endpoint_disable
= usbhsh_endpoint_disable
,
1053 .hub_status_data
= usbhsh_hub_status_data
,
1054 .hub_control
= usbhsh_hub_control
,
1058 * interrupt functions
1060 static int usbhsh_irq_attch(struct usbhs_priv
*priv
,
1061 struct usbhs_irq_state
*irq_state
)
1063 struct usbhsh_hpriv
*hpriv
= usbhsh_priv_to_hpriv(priv
);
1064 struct device
*dev
= usbhs_priv_to_dev(priv
);
1066 dev_dbg(dev
, "device attached\n");
1068 usbhsh_port_stat_set(hpriv
, USB_PORT_STAT_CONNECTION
);
1069 usbhsh_port_stat_set(hpriv
, USB_PORT_STAT_C_CONNECTION
<< 16);
1074 static int usbhsh_irq_dtch(struct usbhs_priv
*priv
,
1075 struct usbhs_irq_state
*irq_state
)
1077 struct usbhsh_hpriv
*hpriv
= usbhsh_priv_to_hpriv(priv
);
1078 struct device
*dev
= usbhs_priv_to_dev(priv
);
1080 dev_dbg(dev
, "device detached\n");
1082 usbhsh_port_stat_clear(hpriv
, USB_PORT_STAT_CONNECTION
);
1083 usbhsh_port_stat_set(hpriv
, USB_PORT_STAT_C_CONNECTION
<< 16);
1088 static int usbhsh_irq_setup_ack(struct usbhs_priv
*priv
,
1089 struct usbhs_irq_state
*irq_state
)
1091 struct usbhsh_hpriv
*hpriv
= usbhsh_priv_to_hpriv(priv
);
1092 struct device
*dev
= usbhs_priv_to_dev(priv
);
1094 dev_dbg(dev
, "setup packet OK\n");
1096 complete(&hpriv
->setup_ack_done
); /* see usbhsh_urb_enqueue() */
1101 static int usbhsh_irq_setup_err(struct usbhs_priv
*priv
,
1102 struct usbhs_irq_state
*irq_state
)
1104 struct usbhsh_hpriv
*hpriv
= usbhsh_priv_to_hpriv(priv
);
1105 struct device
*dev
= usbhs_priv_to_dev(priv
);
1107 dev_dbg(dev
, "setup packet Err\n");
1109 complete(&hpriv
->setup_ack_done
); /* see usbhsh_urb_enqueue() */
1117 static void usbhsh_pipe_init_for_host(struct usbhs_priv
*priv
)
1119 struct usbhsh_hpriv
*hpriv
= usbhsh_priv_to_hpriv(priv
);
1120 struct usbhsh_pipe_info
*pipe_info
= hpriv
->pipe_info
;
1121 struct usbhs_pipe
*pipe
;
1122 u32
*pipe_type
= usbhs_get_dparam(priv
, pipe_type
);
1123 int pipe_size
= usbhs_get_dparam(priv
, pipe_size
);
1124 int old_type
, dir_in
, i
;
1127 old_type
= USB_ENDPOINT_XFER_CONTROL
;
1128 for (i
= 0; i
< pipe_size
; i
++) {
1129 pipe_info
[i
].usr_cnt
= 0;
1132 * data "output" will be finished as soon as possible,
1133 * but there is no guaranty at data "input" case.
1135 * "input" needs "standby" pipe.
1136 * So, "input" direction pipe > "output" direction pipe
1139 * 1st USB_ENDPOINT_XFER_xxx will be output direction,
1140 * and the other will be input direction here.
1144 * USB_ENDPOINT_XFER_ISOC -> dir out
1145 * USB_ENDPOINT_XFER_ISOC -> dir in
1146 * USB_ENDPOINT_XFER_BULK -> dir out
1147 * USB_ENDPOINT_XFER_BULK -> dir in
1148 * USB_ENDPOINT_XFER_BULK -> dir in
1151 dir_in
= (pipe_type
[i
] == old_type
);
1152 old_type
= pipe_type
[i
];
1154 if (USB_ENDPOINT_XFER_CONTROL
== pipe_type
[i
]) {
1155 pipe
= usbhs_dcp_malloc(priv
);
1156 usbhsh_hpriv_to_dcp(hpriv
) = pipe
;
1158 pipe
= usbhs_pipe_malloc(priv
,
1163 pipe
->mod_private
= pipe_info
+ i
;
1167 static int usbhsh_start(struct usbhs_priv
*priv
)
1169 struct usbhsh_hpriv
*hpriv
= usbhsh_priv_to_hpriv(priv
);
1170 struct usb_hcd
*hcd
= usbhsh_hpriv_to_hcd(hpriv
);
1171 struct usbhs_mod
*mod
= usbhs_mod_get_current(priv
);
1172 struct device
*dev
= usbhs_priv_to_dev(priv
);
1176 ret
= usb_add_hcd(hcd
, 0, 0);
1181 * pipe initialize and enable DCP
1183 usbhs_pipe_init(priv
,
1184 usbhsh_dma_map_ctrl
);
1185 usbhs_fifo_init(priv
);
1186 usbhsh_pipe_init_for_host(priv
);
1189 * system config enble
1194 usbhs_sys_hispeed_ctrl(priv
, 1);
1195 usbhs_sys_host_ctrl(priv
, 1);
1196 usbhs_sys_usb_ctrl(priv
, 1);
1199 * enable irq callback
1201 mod
->irq_attch
= usbhsh_irq_attch
;
1202 mod
->irq_dtch
= usbhsh_irq_dtch
;
1203 mod
->irq_sack
= usbhsh_irq_setup_ack
;
1204 mod
->irq_sign
= usbhsh_irq_setup_err
;
1205 usbhs_irq_callback_update(priv
, mod
);
1207 dev_dbg(dev
, "start host\n");
1212 static int usbhsh_stop(struct usbhs_priv
*priv
)
1214 struct usbhsh_hpriv
*hpriv
= usbhsh_priv_to_hpriv(priv
);
1215 struct usb_hcd
*hcd
= usbhsh_hpriv_to_hcd(hpriv
);
1216 struct device
*dev
= usbhs_priv_to_dev(priv
);
1218 usb_remove_hcd(hcd
);
1221 usbhs_sys_hispeed_ctrl(priv
, 0);
1222 usbhs_sys_host_ctrl(priv
, 0);
1223 usbhs_sys_usb_ctrl(priv
, 0);
1225 dev_dbg(dev
, "quit host\n");
1230 int __devinit
usbhs_mod_host_probe(struct usbhs_priv
*priv
)
1232 struct usbhsh_hpriv
*hpriv
;
1233 struct usb_hcd
*hcd
;
1234 struct usbhsh_pipe_info
*pipe_info
;
1235 struct usbhsh_device
*udev
;
1236 struct device
*dev
= usbhs_priv_to_dev(priv
);
1237 int pipe_size
= usbhs_get_dparam(priv
, pipe_size
);
1240 /* initialize hcd */
1241 hcd
= usb_create_hcd(&usbhsh_driver
, dev
, usbhsh_hcd_name
);
1243 dev_err(dev
, "Failed to create hcd\n");
1247 pipe_info
= kzalloc(sizeof(*pipe_info
) * pipe_size
, GFP_KERNEL
);
1249 dev_err(dev
, "Could not allocate pipe_info\n");
1250 goto usbhs_mod_host_probe_err
;
1256 * There is no guarantee that it is possible to access usb module here.
1257 * Don't accesses to it.
1258 * The accesse will be enable after "usbhsh_start"
1261 hpriv
= usbhsh_hcd_to_hpriv(hcd
);
1266 usbhs_mod_register(priv
, &hpriv
->mod
, USBHS_HOST
);
1269 hpriv
->mod
.name
= "host";
1270 hpriv
->mod
.start
= usbhsh_start
;
1271 hpriv
->mod
.stop
= usbhsh_stop
;
1272 hpriv
->pipe_info
= pipe_info
;
1273 hpriv
->pipe_size
= pipe_size
;
1274 usbhsh_req_list_init(hpriv
);
1275 usbhsh_port_stat_init(hpriv
);
1277 /* init all device */
1278 usbhsh_for_each_udev_with_dev0(udev
, hpriv
, i
) {
1280 INIT_LIST_HEAD(&udev
->ep_list_head
);
1283 dev_info(dev
, "host probed\n");
1287 usbhs_mod_host_probe_err
:
1293 int __devexit
usbhs_mod_host_remove(struct usbhs_priv
*priv
)
1295 struct usbhsh_hpriv
*hpriv
= usbhsh_priv_to_hpriv(priv
);
1296 struct usb_hcd
*hcd
= usbhsh_hpriv_to_hcd(hpriv
);
1298 usbhsh_req_list_quit(hpriv
);