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
17 #include <linux/delay.h>
19 #include <linux/scatterlist.h>
23 #define usbhsf_get_cfifo(p) (&((p)->fifo_info.cfifo))
24 #define usbhsf_get_d0fifo(p) (&((p)->fifo_info.d0fifo))
25 #define usbhsf_get_d1fifo(p) (&((p)->fifo_info.d1fifo))
27 #define usbhsf_fifo_is_busy(f) ((f)->pipe) /* see usbhs_pipe_select_fifo */
32 void usbhs_pkt_init(struct usbhs_pkt *pkt)
34 pkt->dma = DMA_ADDR_INVALID;
35 INIT_LIST_HEAD(&pkt->node);
39 * packet control function
41 static int usbhsf_null_handle(struct usbhs_pkt *pkt, int *is_done)
43 struct usbhs_priv *priv = usbhs_pipe_to_priv(pkt->pipe);
44 struct device *dev = usbhs_priv_to_dev(priv);
46 dev_err(dev, "null handler\n");
51 static struct usbhs_pkt_handle usbhsf_null_handler = {
52 .prepare = usbhsf_null_handle,
53 .try_run = usbhsf_null_handle,
56 void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt,
57 void (*done)(struct usbhs_priv *priv,
58 struct usbhs_pkt *pkt),
59 void *buf, int len, int zero)
61 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
62 struct device *dev = usbhs_priv_to_dev(priv);
65 /******************** spin lock ********************/
66 usbhs_lock(priv, flags);
69 dev_err(dev, "no done function\n");
74 dev_err(dev, "no handler function\n");
75 pipe->handler = &usbhsf_null_handler;
78 list_del_init(&pkt->node);
79 list_add_tail(&pkt->node, &pipe->list);
82 * each pkt must hold own handler.
83 * because handler might be changed by its situation.
84 * dma handler -> pio handler.
88 pkt->handler = pipe->handler;
94 usbhs_unlock(priv, flags);
95 /******************** spin unlock ******************/
98 static void __usbhsf_pkt_del(struct usbhs_pkt *pkt)
100 list_del_init(&pkt->node);
103 static struct usbhs_pkt *__usbhsf_pkt_get(struct usbhs_pipe *pipe)
105 if (list_empty(&pipe->list))
108 return list_entry(pipe->list.next, struct usbhs_pkt, node);
111 struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt)
113 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
116 /******************** spin lock ********************/
117 usbhs_lock(priv, flags);
120 pkt = __usbhsf_pkt_get(pipe);
123 __usbhsf_pkt_del(pkt);
125 usbhs_unlock(priv, flags);
126 /******************** spin unlock ******************/
137 static int usbhsf_pkt_handler(struct usbhs_pipe *pipe, int type)
139 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
140 struct usbhs_pkt *pkt;
141 struct device *dev = usbhs_priv_to_dev(priv);
142 int (*func)(struct usbhs_pkt *pkt, int *is_done);
147 /******************** spin lock ********************/
148 usbhs_lock(priv, flags);
150 pkt = __usbhsf_pkt_get(pipe);
152 goto __usbhs_pkt_handler_end;
155 case USBHSF_PKT_PREPARE:
156 func = pkt->handler->prepare;
158 case USBHSF_PKT_TRY_RUN:
159 func = pkt->handler->try_run;
161 case USBHSF_PKT_DMA_DONE:
162 func = pkt->handler->dma_done;
165 dev_err(dev, "unknown pkt hander\n");
166 goto __usbhs_pkt_handler_end;
169 ret = func(pkt, &is_done);
172 __usbhsf_pkt_del(pkt);
174 __usbhs_pkt_handler_end:
175 usbhs_unlock(priv, flags);
176 /******************** spin unlock ******************/
179 pkt->done(priv, pkt);
180 usbhs_pkt_start(pipe);
186 void usbhs_pkt_start(struct usbhs_pipe *pipe)
188 usbhsf_pkt_handler(pipe, USBHSF_PKT_PREPARE);
192 * irq enable/disable function
194 #define usbhsf_irq_empty_ctrl(p, e) usbhsf_irq_callback_ctrl(p, bempsts, e)
195 #define usbhsf_irq_ready_ctrl(p, e) usbhsf_irq_callback_ctrl(p, brdysts, e)
196 #define usbhsf_irq_callback_ctrl(pipe, status, enable) \
198 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); \
199 struct usbhs_mod *mod = usbhs_mod_get_current(priv); \
200 u16 status = (1 << usbhs_pipe_number(pipe)); \
204 mod->irq_##status |= status; \
206 mod->irq_##status &= ~status; \
207 usbhs_irq_callback_update(priv, mod); \
210 static void usbhsf_tx_irq_ctrl(struct usbhs_pipe *pipe, int enable)
213 * And DCP pipe can NOT use "ready interrupt" for "send"
214 * it should use "empty" interrupt.
216 * "Operation" - "Interrupt Function" - "BRDY Interrupt"
218 * on the other hand, normal pipe can use "ready interrupt" for "send"
219 * even though it is single/double buffer
221 if (usbhs_pipe_is_dcp(pipe))
222 usbhsf_irq_empty_ctrl(pipe, enable);
224 usbhsf_irq_ready_ctrl(pipe, enable);
227 static void usbhsf_rx_irq_ctrl(struct usbhs_pipe *pipe, int enable)
229 usbhsf_irq_ready_ctrl(pipe, enable);
235 static void usbhsf_send_terminator(struct usbhs_pipe *pipe,
236 struct usbhs_fifo *fifo)
238 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
240 usbhs_bset(priv, fifo->ctr, BVAL, BVAL);
243 static int usbhsf_fifo_barrier(struct usbhs_priv *priv,
244 struct usbhs_fifo *fifo)
249 /* The FIFO port is accessible */
250 if (usbhs_read(priv, fifo->ctr) & FRDY)
259 static void usbhsf_fifo_clear(struct usbhs_pipe *pipe,
260 struct usbhs_fifo *fifo)
262 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
264 if (!usbhs_pipe_is_dcp(pipe))
265 usbhsf_fifo_barrier(priv, fifo);
267 usbhs_write(priv, fifo->ctr, BCLR);
270 static int usbhsf_fifo_rcv_len(struct usbhs_priv *priv,
271 struct usbhs_fifo *fifo)
273 return usbhs_read(priv, fifo->ctr) & DTLN_MASK;
276 static void usbhsf_fifo_unselect(struct usbhs_pipe *pipe,
277 struct usbhs_fifo *fifo)
279 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
281 usbhs_pipe_select_fifo(pipe, NULL);
282 usbhs_write(priv, fifo->sel, 0);
285 static int usbhsf_fifo_select(struct usbhs_pipe *pipe,
286 struct usbhs_fifo *fifo,
289 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
290 struct device *dev = usbhs_priv_to_dev(priv);
292 u16 mask = ((1 << 5) | 0xF); /* mask of ISEL | CURPIPE */
293 u16 base = usbhs_pipe_number(pipe); /* CURPIPE */
295 if (usbhs_pipe_is_busy(pipe) ||
296 usbhsf_fifo_is_busy(fifo))
299 if (usbhs_pipe_is_dcp(pipe)) {
300 base |= (1 == write) << 5; /* ISEL */
302 if (usbhs_mod_is_host(priv))
303 usbhs_dcp_dir_for_host(pipe, write);
306 /* "base" will be used below */
307 usbhs_write(priv, fifo->sel, base | MBW_32);
309 /* check ISEL and CURPIPE value */
311 if (base == (mask & usbhs_read(priv, fifo->sel))) {
312 usbhs_pipe_select_fifo(pipe, fifo);
318 dev_err(dev, "fifo select error\n");
326 static int usbhsf_pio_try_push(struct usbhs_pkt *pkt, int *is_done)
328 struct usbhs_pipe *pipe = pkt->pipe;
329 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
330 struct device *dev = usbhs_priv_to_dev(priv);
331 struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); /* CFIFO */
332 void __iomem *addr = priv->base + fifo->port;
334 int maxp = usbhs_pipe_get_maxpacket(pipe);
339 ret = usbhsf_fifo_select(pipe, fifo, 1);
343 ret = usbhs_pipe_is_accessible(pipe);
345 /* inaccessible pipe is not an error */
347 goto usbhs_fifo_write_busy;
350 ret = usbhsf_fifo_barrier(priv, fifo);
352 goto usbhs_fifo_write_busy;
354 buf = pkt->buf + pkt->actual;
355 len = pkt->length - pkt->actual;
356 len = min(len, maxp);
358 is_short = total_len < maxp;
365 if (len >= 4 && !((unsigned long)buf & 0x03)) {
366 iowrite32_rep(addr, buf, len / 4);
368 buf += total_len - len;
371 /* the rest operation */
372 for (i = 0; i < len; i++)
373 iowrite8(buf[i], addr + (0x03 - (i & 0x03)));
378 pkt->actual += total_len;
380 if (pkt->actual < pkt->length)
381 *is_done = 0; /* there are remainder data */
383 *is_done = 1; /* short packet */
385 *is_done = !pkt->zero; /* send zero packet ? */
391 usbhsf_send_terminator(pipe, fifo);
393 usbhsf_tx_irq_ctrl(pipe, !*is_done);
394 usbhs_pipe_enable(pipe);
396 dev_dbg(dev, " send %d (%d/ %d/ %d/ %d)\n",
397 usbhs_pipe_number(pipe),
398 pkt->length, pkt->actual, *is_done, pkt->zero);
404 if (usbhs_pipe_is_dcp(pipe))
405 usbhs_dcp_control_transfer_done(pipe);
408 usbhsf_fifo_unselect(pipe, fifo);
412 usbhs_fifo_write_busy:
413 usbhsf_fifo_unselect(pipe, fifo);
419 usbhsf_tx_irq_ctrl(pipe, 1);
424 struct usbhs_pkt_handle usbhs_fifo_pio_push_handler = {
425 .prepare = usbhsf_pio_try_push,
426 .try_run = usbhsf_pio_try_push,
432 static int usbhsf_prepare_pop(struct usbhs_pkt *pkt, int *is_done)
434 struct usbhs_pipe *pipe = pkt->pipe;
436 if (usbhs_pipe_is_busy(pipe))
440 * pipe enable to prepare packet receive
443 usbhs_pipe_enable(pipe);
444 usbhsf_rx_irq_ctrl(pipe, 1);
449 static int usbhsf_pio_try_pop(struct usbhs_pkt *pkt, int *is_done)
451 struct usbhs_pipe *pipe = pkt->pipe;
452 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
453 struct device *dev = usbhs_priv_to_dev(priv);
454 struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); /* CFIFO */
455 void __iomem *addr = priv->base + fifo->port;
458 int maxp = usbhs_pipe_get_maxpacket(pipe);
463 ret = usbhsf_fifo_select(pipe, fifo, 0);
467 ret = usbhsf_fifo_barrier(priv, fifo);
469 goto usbhs_fifo_read_busy;
471 rcv_len = usbhsf_fifo_rcv_len(priv, fifo);
473 buf = pkt->buf + pkt->actual;
474 len = pkt->length - pkt->actual;
475 len = min(len, rcv_len);
479 * Buffer clear if Zero-Length packet
482 * "Operation" - "FIFO Buffer Memory" - "FIFO Port Function"
485 usbhsf_fifo_clear(pipe, fifo);
486 goto usbhs_fifo_read_end;
494 if (len >= 4 && !((unsigned long)buf & 0x03)) {
495 ioread32_rep(addr, buf, len / 4);
497 buf += total_len - len;
500 /* the rest operation */
501 for (i = 0; i < len; i++) {
503 data = ioread32(addr);
505 buf[i] = (data >> ((i & 0x03) * 8)) & 0xff;
508 pkt->actual += total_len;
511 if ((pkt->actual == pkt->length) || /* receive all data */
512 (total_len < maxp)) { /* short packet */
514 usbhsf_rx_irq_ctrl(pipe, 0);
515 usbhs_pipe_disable(pipe);
518 dev_dbg(dev, " recv %d (%d/ %d/ %d/ %d)\n",
519 usbhs_pipe_number(pipe),
520 pkt->length, pkt->actual, *is_done, pkt->zero);
522 usbhs_fifo_read_busy:
523 usbhsf_fifo_unselect(pipe, fifo);
528 struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler = {
529 .prepare = usbhsf_prepare_pop,
530 .try_run = usbhsf_pio_try_pop,
534 * DCP ctrol statge handler
536 static int usbhsf_ctrl_stage_end(struct usbhs_pkt *pkt, int *is_done)
538 usbhs_dcp_control_transfer_done(pkt->pipe);
545 struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler = {
546 .prepare = usbhsf_ctrl_stage_end,
547 .try_run = usbhsf_ctrl_stage_end,
553 static struct dma_chan *usbhsf_dma_chan_get(struct usbhs_fifo *fifo,
554 struct usbhs_pkt *pkt)
556 if (&usbhs_fifo_dma_push_handler == pkt->handler)
557 return fifo->tx_chan;
559 if (&usbhs_fifo_dma_pop_handler == pkt->handler)
560 return fifo->rx_chan;
565 static struct usbhs_fifo *usbhsf_get_dma_fifo(struct usbhs_priv *priv,
566 struct usbhs_pkt *pkt)
568 struct usbhs_fifo *fifo;
571 fifo = usbhsf_get_d0fifo(priv);
572 if (usbhsf_dma_chan_get(fifo, pkt) &&
573 !usbhsf_fifo_is_busy(fifo))
577 fifo = usbhsf_get_d1fifo(priv);
578 if (usbhsf_dma_chan_get(fifo, pkt) &&
579 !usbhsf_fifo_is_busy(fifo))
585 #define usbhsf_dma_start(p, f) __usbhsf_dma_ctrl(p, f, DREQE)
586 #define usbhsf_dma_stop(p, f) __usbhsf_dma_ctrl(p, f, 0)
587 static void __usbhsf_dma_ctrl(struct usbhs_pipe *pipe,
588 struct usbhs_fifo *fifo,
591 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
593 usbhs_bset(priv, fifo->sel, DREQE, dreqe);
596 #define usbhsf_dma_map(p) __usbhsf_dma_map_ctrl(p, 1)
597 #define usbhsf_dma_unmap(p) __usbhsf_dma_map_ctrl(p, 0)
598 static int __usbhsf_dma_map_ctrl(struct usbhs_pkt *pkt, int map)
600 struct usbhs_pipe *pipe = pkt->pipe;
601 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
602 struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
604 return info->dma_map_ctrl(pkt, map);
607 static void usbhsf_dma_complete(void *arg);
608 static void usbhsf_dma_prepare_tasklet(unsigned long data)
610 struct usbhs_pkt *pkt = (struct usbhs_pkt *)data;
611 struct usbhs_pipe *pipe = pkt->pipe;
612 struct usbhs_fifo *fifo = usbhs_pipe_to_fifo(pipe);
613 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
614 struct scatterlist sg;
615 struct dma_async_tx_descriptor *desc;
616 struct dma_chan *chan = usbhsf_dma_chan_get(fifo, pkt);
617 struct device *dev = usbhs_priv_to_dev(priv);
618 enum dma_data_direction dir;
621 dir = usbhs_pipe_is_dir_in(pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
623 sg_init_table(&sg, 1);
624 sg_set_page(&sg, virt_to_page(pkt->dma),
625 pkt->length, offset_in_page(pkt->dma));
626 sg_dma_address(&sg) = pkt->dma + pkt->actual;
627 sg_dma_len(&sg) = pkt->trans;
629 desc = chan->device->device_prep_slave_sg(chan, &sg, 1, dir,
635 desc->callback = usbhsf_dma_complete;
636 desc->callback_param = pipe;
638 cookie = desc->tx_submit(desc);
640 dev_err(dev, "Failed to submit dma descriptor\n");
644 dev_dbg(dev, " %s %d (%d/ %d)\n",
645 fifo->name, usbhs_pipe_number(pipe), pkt->length, pkt->zero);
647 usbhsf_dma_start(pipe, fifo);
648 dma_async_issue_pending(chan);
654 static int usbhsf_dma_prepare_push(struct usbhs_pkt *pkt, int *is_done)
656 struct usbhs_pipe *pipe = pkt->pipe;
657 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
658 struct usbhs_fifo *fifo;
659 int len = pkt->length - pkt->actual;
662 if (usbhs_pipe_is_busy(pipe))
665 /* use PIO if packet is less than pio_dma_border or pipe is DCP */
666 if ((len < usbhs_get_dparam(priv, pio_dma_border)) ||
667 usbhs_pipe_is_dcp(pipe))
668 goto usbhsf_pio_prepare_push;
670 if (len % 4) /* 32bit alignment */
671 goto usbhsf_pio_prepare_push;
673 if (((u32)pkt->buf + pkt->actual) & 0x7) /* 8byte alignment */
674 goto usbhsf_pio_prepare_push;
676 /* get enable DMA fifo */
677 fifo = usbhsf_get_dma_fifo(priv, pkt);
679 goto usbhsf_pio_prepare_push;
681 if (usbhsf_dma_map(pkt) < 0)
682 goto usbhsf_pio_prepare_push;
684 ret = usbhsf_fifo_select(pipe, fifo, 0);
686 goto usbhsf_pio_prepare_push_unmap;
690 tasklet_init(&fifo->tasklet,
691 usbhsf_dma_prepare_tasklet,
694 tasklet_schedule(&fifo->tasklet);
698 usbhsf_pio_prepare_push_unmap:
699 usbhsf_dma_unmap(pkt);
700 usbhsf_pio_prepare_push:
702 * change handler to PIO
704 pkt->handler = &usbhs_fifo_pio_push_handler;
706 return pkt->handler->prepare(pkt, is_done);
709 static int usbhsf_dma_push_done(struct usbhs_pkt *pkt, int *is_done)
711 struct usbhs_pipe *pipe = pkt->pipe;
713 pkt->actual = pkt->trans;
715 *is_done = !pkt->zero; /* send zero packet ? */
717 usbhsf_dma_stop(pipe, pipe->fifo);
718 usbhsf_dma_unmap(pkt);
719 usbhsf_fifo_unselect(pipe, pipe->fifo);
724 struct usbhs_pkt_handle usbhs_fifo_dma_push_handler = {
725 .prepare = usbhsf_dma_prepare_push,
726 .dma_done = usbhsf_dma_push_done,
732 static int usbhsf_dma_try_pop(struct usbhs_pkt *pkt, int *is_done)
734 struct usbhs_pipe *pipe = pkt->pipe;
735 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
736 struct usbhs_fifo *fifo;
739 if (usbhs_pipe_is_busy(pipe))
742 if (usbhs_pipe_is_dcp(pipe))
743 goto usbhsf_pio_prepare_pop;
745 /* get enable DMA fifo */
746 fifo = usbhsf_get_dma_fifo(priv, pkt);
748 goto usbhsf_pio_prepare_pop;
750 if (((u32)pkt->buf + pkt->actual) & 0x7) /* 8byte alignment */
751 goto usbhsf_pio_prepare_pop;
753 ret = usbhsf_fifo_select(pipe, fifo, 0);
755 goto usbhsf_pio_prepare_pop;
757 /* use PIO if packet is less than pio_dma_border */
758 len = usbhsf_fifo_rcv_len(priv, fifo);
759 len = min(pkt->length - pkt->actual, len);
760 if (len % 4) /* 32bit alignment */
761 goto usbhsf_pio_prepare_pop_unselect;
763 if (len < usbhs_get_dparam(priv, pio_dma_border))
764 goto usbhsf_pio_prepare_pop_unselect;
766 ret = usbhsf_fifo_barrier(priv, fifo);
768 goto usbhsf_pio_prepare_pop_unselect;
770 if (usbhsf_dma_map(pkt) < 0)
771 goto usbhsf_pio_prepare_pop_unselect;
776 * usbhs_fifo_dma_pop_handler :: prepare
777 * enabled irq to come here.
778 * but it is no longer needed for DMA. disable it.
780 usbhsf_rx_irq_ctrl(pipe, 0);
784 tasklet_init(&fifo->tasklet,
785 usbhsf_dma_prepare_tasklet,
788 tasklet_schedule(&fifo->tasklet);
792 usbhsf_pio_prepare_pop_unselect:
793 usbhsf_fifo_unselect(pipe, fifo);
794 usbhsf_pio_prepare_pop:
797 * change handler to PIO
799 pkt->handler = &usbhs_fifo_pio_pop_handler;
801 return pkt->handler->try_run(pkt, is_done);
804 static int usbhsf_dma_pop_done(struct usbhs_pkt *pkt, int *is_done)
806 struct usbhs_pipe *pipe = pkt->pipe;
807 int maxp = usbhs_pipe_get_maxpacket(pipe);
809 usbhsf_dma_stop(pipe, pipe->fifo);
810 usbhsf_dma_unmap(pkt);
811 usbhsf_fifo_unselect(pipe, pipe->fifo);
813 pkt->actual += pkt->trans;
815 if ((pkt->actual == pkt->length) || /* receive all data */
816 (pkt->trans < maxp)) { /* short packet */
820 usbhsf_prepare_pop(pkt, is_done);
826 struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler = {
827 .prepare = usbhsf_prepare_pop,
828 .try_run = usbhsf_dma_try_pop,
829 .dma_done = usbhsf_dma_pop_done
835 static bool usbhsf_dma_filter(struct dma_chan *chan, void *param)
837 struct sh_dmae_slave *slave = param;
842 * usbhs doesn't recognize id = 0 as valid DMA
844 if (0 == slave->slave_id)
847 chan->private = slave;
852 static void usbhsf_dma_quit(struct usbhs_priv *priv, struct usbhs_fifo *fifo)
855 dma_release_channel(fifo->tx_chan);
857 dma_release_channel(fifo->rx_chan);
859 fifo->tx_chan = NULL;
860 fifo->rx_chan = NULL;
863 static void usbhsf_dma_init(struct usbhs_priv *priv,
864 struct usbhs_fifo *fifo)
866 struct device *dev = usbhs_priv_to_dev(priv);
870 dma_cap_set(DMA_SLAVE, mask);
871 fifo->tx_chan = dma_request_channel(mask, usbhsf_dma_filter,
875 dma_cap_set(DMA_SLAVE, mask);
876 fifo->rx_chan = dma_request_channel(mask, usbhsf_dma_filter,
879 if (fifo->tx_chan || fifo->rx_chan)
880 dev_dbg(dev, "enable DMAEngine (%s%s%s)\n",
882 fifo->tx_chan ? "[TX]" : " ",
883 fifo->rx_chan ? "[RX]" : " ");
889 static int usbhsf_irq_empty(struct usbhs_priv *priv,
890 struct usbhs_irq_state *irq_state)
892 struct usbhs_pipe *pipe;
893 struct device *dev = usbhs_priv_to_dev(priv);
896 if (!irq_state->bempsts) {
897 dev_err(dev, "debug %s !!\n", __func__);
901 dev_dbg(dev, "irq empty [0x%04x]\n", irq_state->bempsts);
904 * search interrupted "pipe"
907 usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
908 if (!(irq_state->bempsts & (1 << i)))
911 ret = usbhsf_pkt_handler(pipe, USBHSF_PKT_TRY_RUN);
913 dev_err(dev, "irq_empty run_error %d : %d\n", i, ret);
919 static int usbhsf_irq_ready(struct usbhs_priv *priv,
920 struct usbhs_irq_state *irq_state)
922 struct usbhs_pipe *pipe;
923 struct device *dev = usbhs_priv_to_dev(priv);
926 if (!irq_state->brdysts) {
927 dev_err(dev, "debug %s !!\n", __func__);
931 dev_dbg(dev, "irq ready [0x%04x]\n", irq_state->brdysts);
934 * search interrupted "pipe"
937 usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
938 if (!(irq_state->brdysts & (1 << i)))
941 ret = usbhsf_pkt_handler(pipe, USBHSF_PKT_TRY_RUN);
943 dev_err(dev, "irq_ready run_error %d : %d\n", i, ret);
949 static void usbhsf_dma_complete(void *arg)
951 struct usbhs_pipe *pipe = arg;
952 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
953 struct device *dev = usbhs_priv_to_dev(priv);
956 ret = usbhsf_pkt_handler(pipe, USBHSF_PKT_DMA_DONE);
958 dev_err(dev, "dma_complete run_error %d : %d\n",
959 usbhs_pipe_number(pipe), ret);
965 void usbhs_fifo_init(struct usbhs_priv *priv)
967 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
968 struct usbhs_fifo *cfifo = usbhsf_get_cfifo(priv);
969 struct usbhs_fifo *d0fifo = usbhsf_get_d0fifo(priv);
970 struct usbhs_fifo *d1fifo = usbhsf_get_d1fifo(priv);
972 mod->irq_empty = usbhsf_irq_empty;
973 mod->irq_ready = usbhsf_irq_ready;
974 mod->irq_bempsts = 0;
975 mod->irq_brdysts = 0;
978 cfifo->tx_chan = NULL;
979 cfifo->rx_chan = NULL;
982 d0fifo->tx_chan = NULL;
983 d0fifo->rx_chan = NULL;
986 d1fifo->tx_chan = NULL;
987 d1fifo->rx_chan = NULL;
989 usbhsf_dma_init(priv, usbhsf_get_d0fifo(priv));
990 usbhsf_dma_init(priv, usbhsf_get_d1fifo(priv));
993 void usbhs_fifo_quit(struct usbhs_priv *priv)
995 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
997 mod->irq_empty = NULL;
998 mod->irq_ready = NULL;
999 mod->irq_bempsts = 0;
1000 mod->irq_brdysts = 0;
1002 usbhsf_dma_quit(priv, usbhsf_get_d0fifo(priv));
1003 usbhsf_dma_quit(priv, usbhsf_get_d1fifo(priv));
1006 int usbhs_fifo_probe(struct usbhs_priv *priv)
1008 struct usbhs_fifo *fifo;
1011 fifo = usbhsf_get_cfifo(priv);
1012 fifo->name = "CFIFO";
1014 fifo->sel = CFIFOSEL;
1015 fifo->ctr = CFIFOCTR;
1018 fifo = usbhsf_get_d0fifo(priv);
1019 fifo->name = "D0FIFO";
1020 fifo->port = D0FIFO;
1021 fifo->sel = D0FIFOSEL;
1022 fifo->ctr = D0FIFOCTR;
1023 fifo->tx_slave.slave_id = usbhs_get_dparam(priv, d0_tx_id);
1024 fifo->rx_slave.slave_id = usbhs_get_dparam(priv, d0_rx_id);
1027 fifo = usbhsf_get_d1fifo(priv);
1028 fifo->name = "D1FIFO";
1029 fifo->port = D1FIFO;
1030 fifo->sel = D1FIFOSEL;
1031 fifo->ctr = D1FIFOCTR;
1032 fifo->tx_slave.slave_id = usbhs_get_dparam(priv, d1_tx_id);
1033 fifo->rx_slave.slave_id = usbhs_get_dparam(priv, d1_rx_id);
1038 void usbhs_fifo_remove(struct usbhs_priv *priv)