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
,
361 struct usbhs_priv
*priv
= usbhsh_hpriv_to_priv(hpriv
);
362 struct usb_hcd
*hcd
= usbhsh_hpriv_to_hcd(hpriv
);
363 struct usbhsh_ep
*uep
;
364 struct usbhsh_pipe_info
*info
;
365 struct usbhs_pipe
*pipe
, *best_pipe
;
366 struct device
*dev
= usbhsh_hcd_to_dev(hcd
);
367 struct usb_endpoint_descriptor
*desc
= &ep
->desc
;
369 unsigned int min_usr
;
371 dir_in_req
= !!dir_in_req
;
373 uep
= kzalloc(sizeof(struct usbhsh_ep
), mem_flags
);
375 dev_err(dev
, "usbhsh_ep alloc fail\n");
379 if (usb_endpoint_xfer_control(desc
)) {
380 best_pipe
= usbhsh_hpriv_to_dcp(hpriv
);
381 goto usbhsh_endpoint_alloc_find_pipe
;
385 * find best pipe for endpoint
387 * HARDWARE LIMITATION
389 type
= usb_endpoint_type(desc
);
392 usbhs_for_each_pipe(pipe
, priv
, i
) {
393 if (!usbhs_pipe_type_is(pipe
, type
))
396 dir_in
= !!usbhs_pipe_is_dir_in(pipe
);
397 if (0 != (dir_in
- dir_in_req
))
400 info
= usbhsh_pipe_info(pipe
);
402 if (min_usr
> info
->usr_cnt
) {
403 min_usr
= info
->usr_cnt
;
408 if (unlikely(!best_pipe
)) {
409 dev_err(dev
, "couldn't find best pipe\n");
413 usbhsh_endpoint_alloc_find_pipe
:
417 uep
->pipe
= best_pipe
;
418 uep
->maxp
= usb_endpoint_maxp(desc
);
419 usbhsh_uep_to_udev(uep
) = udev
;
420 usbhsh_ep_to_uep(ep
) = uep
;
423 * update pipe user count
425 info
= usbhsh_pipe_info(best_pipe
);
428 /* init this endpoint, and attach it to udev */
429 INIT_LIST_HEAD(&uep
->ep_list
);
430 list_add_tail(&uep
->ep_list
, &udev
->ep_list_head
);
433 * usbhs_pipe_config_update() should be called after
434 * usbhs_device_config()
438 usbhs_pipe_sequence_data0(uep
->pipe
);
439 usbhs_pipe_config_update(uep
->pipe
,
440 usbhsh_device_number(hpriv
, udev
),
441 usb_endpoint_num(desc
),
444 dev_dbg(dev
, "%s [%d-%s](%p)\n", __func__
,
445 usbhsh_device_number(hpriv
, udev
),
446 usbhs_pipe_name(uep
->pipe
), uep
);
451 void usbhsh_endpoint_free(struct usbhsh_hpriv
*hpriv
,
452 struct usb_host_endpoint
*ep
)
454 struct usbhs_priv
*priv
= usbhsh_hpriv_to_priv(hpriv
);
455 struct device
*dev
= usbhs_priv_to_dev(priv
);
456 struct usbhsh_ep
*uep
= usbhsh_ep_to_uep(ep
);
457 struct usbhsh_pipe_info
*info
;
462 dev_dbg(dev
, "%s [%d-%s](%p)\n", __func__
,
463 usbhsh_device_number(hpriv
, usbhsh_uep_to_udev(uep
)),
464 usbhs_pipe_name(uep
->pipe
), uep
);
466 info
= usbhsh_pipe_info(uep
->pipe
);
469 /* remove this endpoint from udev */
470 list_del_init(&uep
->ep_list
);
472 usbhsh_uep_to_udev(uep
) = NULL
;
473 usbhsh_ep_to_uep(ep
) = NULL
;
481 static void usbhsh_queue_done(struct usbhs_priv
*priv
, struct usbhs_pkt
*pkt
)
483 struct usbhsh_request
*ureq
= usbhsh_pkt_to_req(pkt
);
484 struct usbhsh_hpriv
*hpriv
= usbhsh_priv_to_hpriv(priv
);
485 struct usb_hcd
*hcd
= usbhsh_hpriv_to_hcd(hpriv
);
486 struct urb
*urb
= ureq
->urb
;
487 struct device
*dev
= usbhs_priv_to_dev(priv
);
489 dev_dbg(dev
, "%s\n", __func__
);
492 dev_warn(dev
, "pkt doesn't have urb\n");
496 urb
->actual_length
= pkt
->actual
;
497 usbhsh_req_free(hpriv
, ureq
);
498 usbhsh_urb_to_ureq(urb
) = NULL
;
500 usb_hcd_unlink_urb_from_ep(hcd
, urb
);
501 usb_hcd_giveback_urb(hcd
, urb
, 0);
504 static int usbhsh_queue_push(struct usb_hcd
*hcd
,
505 struct usbhs_pipe
*pipe
,
508 struct usbhsh_request
*ureq
= usbhsh_urb_to_ureq(urb
);
509 struct usbhs_pkt
*pkt
= &ureq
->pkt
;
510 struct device
*dev
= usbhsh_hcd_to_dev(hcd
);
514 if (usb_pipeisoc(urb
->pipe
)) {
515 dev_err(dev
, "pipe iso is not supported now\n");
519 if (usb_pipein(urb
->pipe
))
520 pipe
->handler
= &usbhs_fifo_pio_pop_handler
;
522 pipe
->handler
= &usbhs_fifo_pio_push_handler
;
524 buf
= (void *)(urb
->transfer_buffer
+ urb
->actual_length
);
525 len
= urb
->transfer_buffer_length
- urb
->actual_length
;
527 dev_dbg(dev
, "%s\n", __func__
);
528 usbhs_pkt_push(pipe
, pkt
, usbhsh_queue_done
,
529 buf
, len
, (urb
->transfer_flags
& URB_ZERO_PACKET
));
530 usbhs_pkt_start(pipe
);
538 static int usbhsh_is_request_address(struct urb
*urb
)
540 struct usb_ctrlrequest
*cmd
;
542 cmd
= (struct usb_ctrlrequest
*)urb
->setup_packet
;
544 if ((DeviceOutRequest
== cmd
->bRequestType
<< 8) &&
545 (USB_REQ_SET_ADDRESS
== cmd
->bRequest
))
551 static void usbhsh_setup_stage_packet_push(struct usbhsh_hpriv
*hpriv
,
553 struct usbhs_pipe
*pipe
)
555 struct usbhs_priv
*priv
= usbhsh_hpriv_to_priv(hpriv
);
556 struct usb_ctrlrequest req
;
557 struct device
*dev
= usbhs_priv_to_dev(priv
);
560 * wait setup packet ACK
562 * usbhsh_irq_setup_ack()
563 * usbhsh_irq_setup_err()
565 init_completion(&hpriv
->setup_ack_done
);
567 /* copy original request */
568 memcpy(&req
, urb
->setup_packet
, sizeof(struct usb_ctrlrequest
));
571 * renesas_usbhs can not use original usb address.
572 * see HARDWARE LIMITATION.
573 * modify usb address here.
575 if (usbhsh_is_request_address(urb
)) {
578 dev_dbg(dev
, "create new address - %d\n", req
.wValue
);
582 usbhs_usbreq_set_val(priv
, &req
);
585 * wait setup packet ACK
587 wait_for_completion(&hpriv
->setup_ack_done
);
589 dev_dbg(dev
, "%s done\n", __func__
);
595 static void usbhsh_data_stage_packet_done(struct usbhs_priv
*priv
,
596 struct usbhs_pkt
*pkt
)
598 struct usbhsh_request
*ureq
= usbhsh_pkt_to_req(pkt
);
599 struct usbhsh_hpriv
*hpriv
= usbhsh_priv_to_hpriv(priv
);
600 struct urb
*urb
= ureq
->urb
;
602 /* this ureq was connected to urb when usbhsh_urb_enqueue() */
604 usbhsh_req_free(hpriv
, ureq
);
605 usbhsh_urb_to_ureq(urb
) = NULL
;
608 static void usbhsh_data_stage_packet_push(struct usbhsh_hpriv
*hpriv
,
610 struct usbhs_pipe
*pipe
)
612 struct usbhsh_request
*ureq
;
613 struct usbhs_pkt
*pkt
;
618 * data stage uses ureq which is connected to urb
619 * see usbhsh_urb_enqueue() :: alloc new request.
620 * it will be freed in usbhsh_data_stage_packet_done()
622 ureq
= usbhsh_urb_to_ureq(urb
);
625 if (usb_pipein(urb
->pipe
))
626 pipe
->handler
= &usbhs_dcp_data_stage_in_handler
;
628 pipe
->handler
= &usbhs_dcp_data_stage_out_handler
;
630 usbhs_pkt_push(pipe
, pkt
,
631 usbhsh_data_stage_packet_done
,
632 urb
->transfer_buffer
,
633 urb
->transfer_buffer_length
,
634 (urb
->transfer_flags
& URB_ZERO_PACKET
));
640 static void usbhsh_status_stage_packet_push(struct usbhsh_hpriv
*hpriv
,
642 struct usbhs_pipe
*pipe
)
644 struct usbhsh_request
*ureq
;
645 struct usbhs_pkt
*pkt
;
650 * status stage uses allocated ureq.
651 * it will be freed on usbhsh_queue_done()
653 ureq
= usbhsh_req_alloc(hpriv
, urb
, GFP_KERNEL
);
656 if (usb_pipein(urb
->pipe
))
657 pipe
->handler
= &usbhs_dcp_status_stage_in_handler
;
659 pipe
->handler
= &usbhs_dcp_status_stage_out_handler
;
661 usbhs_pkt_push(pipe
, pkt
,
664 urb
->transfer_buffer_length
,
668 static int usbhsh_dcp_queue_push(struct usb_hcd
*hcd
,
669 struct usbhsh_hpriv
*hpriv
,
670 struct usbhs_pipe
*pipe
,
673 struct device
*dev
= usbhsh_hcd_to_dev(hcd
);
675 dev_dbg(dev
, "%s\n", __func__
);
680 * usbhsh_send_setup_stage_packet() wait SACK/SIGN
682 usbhsh_setup_stage_packet_push(hpriv
, urb
, pipe
);
687 * It is pushed only when urb has buffer.
689 if (urb
->transfer_buffer_length
)
690 usbhsh_data_stage_packet_push(hpriv
, urb
, pipe
);
695 usbhsh_status_stage_packet_push(hpriv
, urb
, pipe
);
698 * start pushed packets
700 usbhs_pkt_start(pipe
);
708 static int usbhsh_dma_map_ctrl(struct usbhs_pkt
*pkt
, int map
)
716 static int usbhsh_host_start(struct usb_hcd
*hcd
)
721 static void usbhsh_host_stop(struct usb_hcd
*hcd
)
725 static int usbhsh_urb_enqueue(struct usb_hcd
*hcd
,
729 struct usbhsh_hpriv
*hpriv
= usbhsh_hcd_to_hpriv(hcd
);
730 struct usbhs_priv
*priv
= usbhsh_hpriv_to_priv(hpriv
);
731 struct device
*dev
= usbhs_priv_to_dev(priv
);
732 struct usb_device
*usbv
= usbhsh_urb_to_usbv(urb
);
733 struct usb_host_endpoint
*ep
= urb
->ep
;
734 struct usbhsh_request
*ureq
;
735 struct usbhsh_device
*udev
, *new_udev
= NULL
;
736 struct usbhs_pipe
*pipe
;
737 struct usbhsh_ep
*uep
;
738 int is_dir_in
= usb_pipein(urb
->pipe
);
742 dev_dbg(dev
, "%s (%s)\n", __func__
, is_dir_in
? "in" : "out");
744 ret
= usb_hcd_link_urb_to_ep(hcd
, urb
);
746 goto usbhsh_urb_enqueue_error_not_linked
;
751 udev
= usbhsh_usbv_to_udev(usbv
);
753 new_udev
= usbhsh_device_alloc(hpriv
, urb
);
755 goto usbhsh_urb_enqueue_error_not_linked
;
763 uep
= usbhsh_ep_to_uep(ep
);
765 uep
= usbhsh_endpoint_alloc(hpriv
, udev
, ep
,
766 is_dir_in
, mem_flags
);
768 goto usbhsh_urb_enqueue_error_free_device
;
770 pipe
= usbhsh_uep_to_pipe(uep
);
775 ureq
= usbhsh_req_alloc(hpriv
, urb
, mem_flags
);
776 if (unlikely(!ureq
)) {
778 goto usbhsh_urb_enqueue_error_free_endpoint
;
780 usbhsh_urb_to_ureq(urb
) = ureq
;
785 if (usb_pipecontrol(urb
->pipe
))
786 usbhsh_dcp_queue_push(hcd
, hpriv
, pipe
, urb
);
788 usbhsh_queue_push(hcd
, pipe
, urb
);
792 usbhsh_urb_enqueue_error_free_endpoint
:
793 usbhsh_endpoint_free(hpriv
, ep
);
794 usbhsh_urb_enqueue_error_free_device
:
796 usbhsh_device_free(hpriv
, new_udev
);
797 usbhsh_urb_enqueue_error_not_linked
:
799 dev_dbg(dev
, "%s error\n", __func__
);
804 static int usbhsh_urb_dequeue(struct usb_hcd
*hcd
, struct urb
*urb
, int status
)
806 struct usbhsh_hpriv
*hpriv
= usbhsh_hcd_to_hpriv(hcd
);
807 struct usbhsh_request
*ureq
= usbhsh_urb_to_ureq(urb
);
810 usbhsh_req_free(hpriv
, ureq
);
811 usbhsh_urb_to_ureq(urb
) = NULL
;
817 static void usbhsh_endpoint_disable(struct usb_hcd
*hcd
,
818 struct usb_host_endpoint
*ep
)
820 struct usbhsh_ep
*uep
= usbhsh_ep_to_uep(ep
);
821 struct usbhsh_device
*udev
;
822 struct usbhsh_hpriv
*hpriv
;
825 * this function might be called manytimes by same hcd/ep
826 * in-endpoitn == out-endpoint if ep == dcp.
831 udev
= usbhsh_uep_to_udev(uep
);
832 hpriv
= usbhsh_hcd_to_hpriv(hcd
);
834 usbhsh_endpoint_free(hpriv
, ep
);
838 * if there is no endpoint,
841 if (!usbhsh_device_has_endpoint(udev
))
842 usbhsh_device_free(hpriv
, udev
);
845 static int usbhsh_hub_status_data(struct usb_hcd
*hcd
, char *buf
)
847 struct usbhsh_hpriv
*hpriv
= usbhsh_hcd_to_hpriv(hcd
);
848 struct usbhs_priv
*priv
= usbhsh_hpriv_to_priv(hpriv
);
849 struct device
*dev
= usbhs_priv_to_dev(priv
);
850 int roothub_id
= 1; /* only 1 root hub */
853 * does port stat was changed ?
854 * check USB_PORT_STAT_C_xxx << 16
856 if (usbhsh_port_stat_get(hpriv
) & 0xFFFF0000)
857 *buf
= (1 << roothub_id
);
861 dev_dbg(dev
, "%s (%02x)\n", __func__
, *buf
);
866 static int __usbhsh_hub_hub_feature(struct usbhsh_hpriv
*hpriv
,
867 u16 typeReq
, u16 wValue
,
868 u16 wIndex
, char *buf
, u16 wLength
)
870 struct usbhs_priv
*priv
= usbhsh_hpriv_to_priv(hpriv
);
871 struct device
*dev
= usbhs_priv_to_dev(priv
);
874 case C_HUB_OVER_CURRENT
:
875 case C_HUB_LOCAL_POWER
:
876 dev_dbg(dev
, "%s :: C_HUB_xx\n", __func__
);
883 static int __usbhsh_hub_port_feature(struct usbhsh_hpriv
*hpriv
,
884 u16 typeReq
, u16 wValue
,
885 u16 wIndex
, char *buf
, u16 wLength
)
887 struct usbhs_priv
*priv
= usbhsh_hpriv_to_priv(hpriv
);
888 struct device
*dev
= usbhs_priv_to_dev(priv
);
889 int enable
= (typeReq
== SetPortFeature
);
890 int speed
, i
, timeout
= 128;
891 int roothub_id
= 1; /* only 1 root hub */
894 if (wIndex
> roothub_id
|| wLength
!= 0)
899 case USB_PORT_FEAT_POWER
:
900 usbhs_vbus_ctrl(priv
, enable
);
901 dev_dbg(dev
, "%s :: USB_PORT_FEAT_POWER\n", __func__
);
904 case USB_PORT_FEAT_ENABLE
:
905 case USB_PORT_FEAT_SUSPEND
:
906 case USB_PORT_FEAT_C_ENABLE
:
907 case USB_PORT_FEAT_C_SUSPEND
:
908 case USB_PORT_FEAT_C_CONNECTION
:
909 case USB_PORT_FEAT_C_OVER_CURRENT
:
910 case USB_PORT_FEAT_C_RESET
:
911 dev_dbg(dev
, "%s :: USB_PORT_FEAT_xxx\n", __func__
);
914 case USB_PORT_FEAT_RESET
:
918 usbhsh_port_stat_clear(hpriv
,
919 USB_PORT_STAT_HIGH_SPEED
|
920 USB_PORT_STAT_LOW_SPEED
);
922 usbhs_bus_send_reset(priv
);
924 usbhs_bus_send_sof_enable(priv
);
926 for (i
= 0; i
< timeout
; i
++) {
927 switch (usbhs_bus_get_speed(priv
)) {
929 speed
= USB_PORT_STAT_LOW_SPEED
;
930 goto got_usb_bus_speed
;
932 speed
= USB_PORT_STAT_HIGH_SPEED
;
933 goto got_usb_bus_speed
;
936 goto got_usb_bus_speed
;
944 usbhsh_port_stat_set(hpriv
, speed
);
945 usbhsh_port_stat_set(hpriv
, USB_PORT_STAT_ENABLE
);
947 dev_dbg(dev
, "%s :: USB_PORT_FEAT_RESET (speed = %d)\n",
950 /* status change is not needed */
957 /* set/clear status */
959 usbhsh_port_stat_set(hpriv
, (1 << wValue
));
961 usbhsh_port_stat_clear(hpriv
, (1 << wValue
));
966 static int __usbhsh_hub_get_status(struct usbhsh_hpriv
*hpriv
,
967 u16 typeReq
, u16 wValue
,
968 u16 wIndex
, char *buf
, u16 wLength
)
970 struct usbhs_priv
*priv
= usbhsh_hpriv_to_priv(hpriv
);
971 struct usb_hub_descriptor
*desc
= (struct usb_hub_descriptor
*)buf
;
972 struct device
*dev
= usbhs_priv_to_dev(priv
);
973 int roothub_id
= 1; /* only 1 root hub */
977 dev_dbg(dev
, "%s :: GetHubStatus\n", __func__
);
983 if (wIndex
!= roothub_id
)
986 dev_dbg(dev
, "%s :: GetPortStatus\n", __func__
);
987 *(__le32
*)buf
= cpu_to_le32(usbhsh_port_stat_get(hpriv
));
990 case GetHubDescriptor
:
991 desc
->bDescriptorType
= 0x29;
992 desc
->bHubContrCurrent
= 0;
993 desc
->bNbrPorts
= roothub_id
;
994 desc
->bDescLength
= 9;
995 desc
->bPwrOn2PwrGood
= 0;
996 desc
->wHubCharacteristics
= cpu_to_le16(0x0011);
997 desc
->u
.hs
.DeviceRemovable
[0] = (roothub_id
<< 1);
998 desc
->u
.hs
.DeviceRemovable
[1] = ~0;
999 dev_dbg(dev
, "%s :: GetHubDescriptor\n", __func__
);
1006 static int usbhsh_hub_control(struct usb_hcd
*hcd
, u16 typeReq
, u16 wValue
,
1007 u16 wIndex
, char *buf
, u16 wLength
)
1009 struct usbhsh_hpriv
*hpriv
= usbhsh_hcd_to_hpriv(hcd
);
1010 struct usbhs_priv
*priv
= usbhsh_hpriv_to_priv(hpriv
);
1011 struct device
*dev
= usbhs_priv_to_dev(priv
);
1017 case ClearHubFeature
:
1019 ret
= __usbhsh_hub_hub_feature(hpriv
, typeReq
,
1020 wValue
, wIndex
, buf
, wLength
);
1024 case SetPortFeature
:
1025 case ClearPortFeature
:
1026 ret
= __usbhsh_hub_port_feature(hpriv
, typeReq
,
1027 wValue
, wIndex
, buf
, wLength
);
1033 case GetHubDescriptor
:
1034 ret
= __usbhsh_hub_get_status(hpriv
, typeReq
,
1035 wValue
, wIndex
, buf
, wLength
);
1039 dev_dbg(dev
, "typeReq = %x, ret = %d, port_stat = %x\n",
1040 typeReq
, ret
, usbhsh_port_stat_get(hpriv
));
1045 static struct hc_driver usbhsh_driver
= {
1046 .description
= usbhsh_hcd_name
,
1047 .hcd_priv_size
= sizeof(struct usbhsh_hpriv
),
1050 * generic hardware linkage
1054 .start
= usbhsh_host_start
,
1055 .stop
= usbhsh_host_stop
,
1058 * managing i/o requests and associated device resources
1060 .urb_enqueue
= usbhsh_urb_enqueue
,
1061 .urb_dequeue
= usbhsh_urb_dequeue
,
1062 .endpoint_disable
= usbhsh_endpoint_disable
,
1067 .hub_status_data
= usbhsh_hub_status_data
,
1068 .hub_control
= usbhsh_hub_control
,
1072 * interrupt functions
1074 static int usbhsh_irq_attch(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 attached\n");
1082 usbhsh_port_stat_set(hpriv
, USB_PORT_STAT_CONNECTION
);
1083 usbhsh_port_stat_set(hpriv
, USB_PORT_STAT_C_CONNECTION
<< 16);
1088 static int usbhsh_irq_dtch(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
, "device detached\n");
1096 usbhsh_port_stat_clear(hpriv
, USB_PORT_STAT_CONNECTION
);
1097 usbhsh_port_stat_set(hpriv
, USB_PORT_STAT_C_CONNECTION
<< 16);
1102 static int usbhsh_irq_setup_ack(struct usbhs_priv
*priv
,
1103 struct usbhs_irq_state
*irq_state
)
1105 struct usbhsh_hpriv
*hpriv
= usbhsh_priv_to_hpriv(priv
);
1106 struct device
*dev
= usbhs_priv_to_dev(priv
);
1108 dev_dbg(dev
, "setup packet OK\n");
1110 complete(&hpriv
->setup_ack_done
); /* see usbhsh_urb_enqueue() */
1115 static int usbhsh_irq_setup_err(struct usbhs_priv
*priv
,
1116 struct usbhs_irq_state
*irq_state
)
1118 struct usbhsh_hpriv
*hpriv
= usbhsh_priv_to_hpriv(priv
);
1119 struct device
*dev
= usbhs_priv_to_dev(priv
);
1121 dev_dbg(dev
, "setup packet Err\n");
1123 complete(&hpriv
->setup_ack_done
); /* see usbhsh_urb_enqueue() */
1131 static void usbhsh_pipe_init_for_host(struct usbhs_priv
*priv
)
1133 struct usbhsh_hpriv
*hpriv
= usbhsh_priv_to_hpriv(priv
);
1134 struct usbhsh_pipe_info
*pipe_info
= hpriv
->pipe_info
;
1135 struct usbhs_pipe
*pipe
;
1136 u32
*pipe_type
= usbhs_get_dparam(priv
, pipe_type
);
1137 int pipe_size
= usbhs_get_dparam(priv
, pipe_size
);
1138 int old_type
, dir_in
, i
;
1141 old_type
= USB_ENDPOINT_XFER_CONTROL
;
1142 for (i
= 0; i
< pipe_size
; i
++) {
1143 pipe_info
[i
].usr_cnt
= 0;
1146 * data "output" will be finished as soon as possible,
1147 * but there is no guaranty at data "input" case.
1149 * "input" needs "standby" pipe.
1150 * So, "input" direction pipe > "output" direction pipe
1153 * 1st USB_ENDPOINT_XFER_xxx will be output direction,
1154 * and the other will be input direction here.
1158 * USB_ENDPOINT_XFER_ISOC -> dir out
1159 * USB_ENDPOINT_XFER_ISOC -> dir in
1160 * USB_ENDPOINT_XFER_BULK -> dir out
1161 * USB_ENDPOINT_XFER_BULK -> dir in
1162 * USB_ENDPOINT_XFER_BULK -> dir in
1165 dir_in
= (pipe_type
[i
] == old_type
);
1166 old_type
= pipe_type
[i
];
1168 if (USB_ENDPOINT_XFER_CONTROL
== pipe_type
[i
]) {
1169 pipe
= usbhs_dcp_malloc(priv
);
1170 usbhsh_hpriv_to_dcp(hpriv
) = pipe
;
1172 pipe
= usbhs_pipe_malloc(priv
,
1177 pipe
->mod_private
= pipe_info
+ i
;
1181 static int usbhsh_start(struct usbhs_priv
*priv
)
1183 struct usbhsh_hpriv
*hpriv
= usbhsh_priv_to_hpriv(priv
);
1184 struct usb_hcd
*hcd
= usbhsh_hpriv_to_hcd(hpriv
);
1185 struct usbhs_mod
*mod
= usbhs_mod_get_current(priv
);
1186 struct device
*dev
= usbhs_priv_to_dev(priv
);
1190 ret
= usb_add_hcd(hcd
, 0, 0);
1195 * pipe initialize and enable DCP
1197 usbhs_pipe_init(priv
,
1198 usbhsh_dma_map_ctrl
);
1199 usbhs_fifo_init(priv
);
1200 usbhsh_pipe_init_for_host(priv
);
1203 * system config enble
1208 usbhs_sys_hispeed_ctrl(priv
, 1);
1209 usbhs_sys_host_ctrl(priv
, 1);
1210 usbhs_sys_usb_ctrl(priv
, 1);
1213 * enable irq callback
1215 mod
->irq_attch
= usbhsh_irq_attch
;
1216 mod
->irq_dtch
= usbhsh_irq_dtch
;
1217 mod
->irq_sack
= usbhsh_irq_setup_ack
;
1218 mod
->irq_sign
= usbhsh_irq_setup_err
;
1219 usbhs_irq_callback_update(priv
, mod
);
1221 dev_dbg(dev
, "start host\n");
1226 static int usbhsh_stop(struct usbhs_priv
*priv
)
1228 struct usbhsh_hpriv
*hpriv
= usbhsh_priv_to_hpriv(priv
);
1229 struct usb_hcd
*hcd
= usbhsh_hpriv_to_hcd(hpriv
);
1230 struct usbhs_mod
*mod
= usbhs_mod_get_current(priv
);
1231 struct device
*dev
= usbhs_priv_to_dev(priv
);
1234 * disable irq callback
1236 mod
->irq_attch
= NULL
;
1237 mod
->irq_dtch
= NULL
;
1238 mod
->irq_sack
= NULL
;
1239 mod
->irq_sign
= NULL
;
1240 usbhs_irq_callback_update(priv
, mod
);
1242 usb_remove_hcd(hcd
);
1245 usbhs_sys_hispeed_ctrl(priv
, 0);
1246 usbhs_sys_host_ctrl(priv
, 0);
1247 usbhs_sys_usb_ctrl(priv
, 0);
1249 dev_dbg(dev
, "quit host\n");
1254 int usbhs_mod_host_probe(struct usbhs_priv
*priv
)
1256 struct usbhsh_hpriv
*hpriv
;
1257 struct usb_hcd
*hcd
;
1258 struct usbhsh_pipe_info
*pipe_info
;
1259 struct usbhsh_device
*udev
;
1260 struct device
*dev
= usbhs_priv_to_dev(priv
);
1261 int pipe_size
= usbhs_get_dparam(priv
, pipe_size
);
1264 /* initialize hcd */
1265 hcd
= usb_create_hcd(&usbhsh_driver
, dev
, usbhsh_hcd_name
);
1267 dev_err(dev
, "Failed to create hcd\n");
1271 pipe_info
= kzalloc(sizeof(*pipe_info
) * pipe_size
, GFP_KERNEL
);
1273 dev_err(dev
, "Could not allocate pipe_info\n");
1274 goto usbhs_mod_host_probe_err
;
1280 * There is no guarantee that it is possible to access usb module here.
1281 * Don't accesses to it.
1282 * The accesse will be enable after "usbhsh_start"
1285 hpriv
= usbhsh_hcd_to_hpriv(hcd
);
1290 usbhs_mod_register(priv
, &hpriv
->mod
, USBHS_HOST
);
1293 hpriv
->mod
.name
= "host";
1294 hpriv
->mod
.start
= usbhsh_start
;
1295 hpriv
->mod
.stop
= usbhsh_stop
;
1296 hpriv
->pipe_info
= pipe_info
;
1297 hpriv
->pipe_size
= pipe_size
;
1298 usbhsh_req_list_init(hpriv
);
1299 usbhsh_port_stat_init(hpriv
);
1301 /* init all device */
1302 usbhsh_for_each_udev_with_dev0(udev
, hpriv
, i
) {
1304 INIT_LIST_HEAD(&udev
->ep_list_head
);
1307 dev_info(dev
, "host probed\n");
1311 usbhs_mod_host_probe_err
:
1317 int usbhs_mod_host_remove(struct usbhs_priv
*priv
)
1319 struct usbhsh_hpriv
*hpriv
= usbhsh_priv_to_hpriv(priv
);
1320 struct usb_hcd
*hcd
= usbhsh_hpriv_to_hcd(hpriv
);
1322 usbhsh_req_list_quit(hpriv
);