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25#include <linux/module.h>
26#include <linux/moduleparam.h>
27#include <linux/init.h>
28#include <linux/ioport.h>
29#include <linux/platform_device.h>
30#include <linux/interrupt.h>
31#include <linux/dma-mapping.h>
32#include <linux/delay.h>
33#include <linux/pnp.h>
34#include <linux/highmem.h>
35#include <linux/mmc/host.h>
36#include <linux/scatterlist.h>
37#include <linux/slab.h>
38
39#include <asm/io.h>
40#include <asm/dma.h>
41
42#include "wbsd.h"
43
44#define DRIVER_NAME "wbsd"
45
46#define DBG(x...) \
47 pr_debug(DRIVER_NAME ": " x)
48#define DBGF(f, x...) \
49 pr_debug(DRIVER_NAME " [%s()]: " f, __func__ , ##x)
50
51
52
53
54
55#ifdef CONFIG_PNP
56
57static const struct pnp_device_id pnp_dev_table[] = {
58 { "WEC0517", 0 },
59 { "WEC0518", 0 },
60 { "", 0 },
61};
62
63MODULE_DEVICE_TABLE(pnp, pnp_dev_table);
64
65#endif
66
67static const int config_ports[] = { 0x2E, 0x4E };
68static const int unlock_codes[] = { 0x83, 0x87 };
69
70static const int valid_ids[] = {
71 0x7112,
72};
73
74#ifdef CONFIG_PNP
75static unsigned int param_nopnp = 0;
76#else
77static const unsigned int param_nopnp = 1;
78#endif
79static unsigned int param_io = 0x248;
80static unsigned int param_irq = 6;
81static int param_dma = 2;
82
83
84
85
86
87static inline void wbsd_unlock_config(struct wbsd_host *host)
88{
89 BUG_ON(host->config == 0);
90
91 outb(host->unlock_code, host->config);
92 outb(host->unlock_code, host->config);
93}
94
95static inline void wbsd_lock_config(struct wbsd_host *host)
96{
97 BUG_ON(host->config == 0);
98
99 outb(LOCK_CODE, host->config);
100}
101
102static inline void wbsd_write_config(struct wbsd_host *host, u8 reg, u8 value)
103{
104 BUG_ON(host->config == 0);
105
106 outb(reg, host->config);
107 outb(value, host->config + 1);
108}
109
110static inline u8 wbsd_read_config(struct wbsd_host *host, u8 reg)
111{
112 BUG_ON(host->config == 0);
113
114 outb(reg, host->config);
115 return inb(host->config + 1);
116}
117
118static inline void wbsd_write_index(struct wbsd_host *host, u8 index, u8 value)
119{
120 outb(index, host->base + WBSD_IDXR);
121 outb(value, host->base + WBSD_DATAR);
122}
123
124static inline u8 wbsd_read_index(struct wbsd_host *host, u8 index)
125{
126 outb(index, host->base + WBSD_IDXR);
127 return inb(host->base + WBSD_DATAR);
128}
129
130
131
132
133
134static void wbsd_init_device(struct wbsd_host *host)
135{
136 u8 setup, ier;
137
138
139
140
141 setup = wbsd_read_index(host, WBSD_IDX_SETUP);
142 setup |= WBSD_FIFO_RESET | WBSD_SOFT_RESET;
143 wbsd_write_index(host, WBSD_IDX_SETUP, setup);
144
145
146
147
148 setup &= ~WBSD_DAT3_H;
149 wbsd_write_index(host, WBSD_IDX_SETUP, setup);
150 host->flags &= ~WBSD_FIGNORE_DETECT;
151
152
153
154
155 host->clk = wbsd_read_index(host, WBSD_IDX_CLK);
156
157
158
159
160 outb(WBSD_POWER_N, host->base + WBSD_CSR);
161
162
163
164
165 wbsd_write_index(host, WBSD_IDX_TAAC, 0x7F);
166
167
168
169
170 if (inb(host->base + WBSD_CSR) & WBSD_CARDPRESENT)
171 host->flags |= WBSD_FCARD_PRESENT;
172 else
173 host->flags &= ~WBSD_FCARD_PRESENT;
174
175
176
177
178 ier = 0;
179 ier |= WBSD_EINT_CARD;
180 ier |= WBSD_EINT_FIFO_THRE;
181 ier |= WBSD_EINT_CRC;
182 ier |= WBSD_EINT_TIMEOUT;
183 ier |= WBSD_EINT_TC;
184
185 outb(ier, host->base + WBSD_EIR);
186
187
188
189
190 inb(host->base + WBSD_ISR);
191}
192
193static void wbsd_reset(struct wbsd_host *host)
194{
195 u8 setup;
196
197 pr_err("%s: Resetting chip\n", mmc_hostname(host->mmc));
198
199
200
201
202 setup = wbsd_read_index(host, WBSD_IDX_SETUP);
203 setup |= WBSD_SOFT_RESET;
204 wbsd_write_index(host, WBSD_IDX_SETUP, setup);
205}
206
207static void wbsd_request_end(struct wbsd_host *host, struct mmc_request *mrq)
208{
209 unsigned long dmaflags;
210
211 if (host->dma >= 0) {
212
213
214
215 dmaflags = claim_dma_lock();
216 disable_dma(host->dma);
217 clear_dma_ff(host->dma);
218 release_dma_lock(dmaflags);
219
220
221
222
223 wbsd_write_index(host, WBSD_IDX_DMA, 0);
224 }
225
226 host->mrq = NULL;
227
228
229
230
231 spin_unlock(&host->lock);
232 mmc_request_done(host->mmc, mrq);
233 spin_lock(&host->lock);
234}
235
236
237
238
239
240static inline void wbsd_init_sg(struct wbsd_host *host, struct mmc_data *data)
241{
242
243
244
245 host->cur_sg = data->sg;
246 host->num_sg = data->sg_len;
247
248 host->offset = 0;
249 host->remain = host->cur_sg->length;
250}
251
252static inline int wbsd_next_sg(struct wbsd_host *host)
253{
254
255
256
257 host->cur_sg++;
258 host->num_sg--;
259
260
261
262
263 if (host->num_sg > 0) {
264 host->offset = 0;
265 host->remain = host->cur_sg->length;
266 }
267
268 return host->num_sg;
269}
270
271static inline char *wbsd_sg_to_buffer(struct wbsd_host *host)
272{
273 return sg_virt(host->cur_sg);
274}
275
276static inline void wbsd_sg_to_dma(struct wbsd_host *host, struct mmc_data *data)
277{
278 unsigned int len, i;
279 struct scatterlist *sg;
280 char *dmabuf = host->dma_buffer;
281 char *sgbuf;
282
283 sg = data->sg;
284 len = data->sg_len;
285
286 for (i = 0; i < len; i++) {
287 sgbuf = sg_virt(&sg[i]);
288 memcpy(dmabuf, sgbuf, sg[i].length);
289 dmabuf += sg[i].length;
290 }
291}
292
293static inline void wbsd_dma_to_sg(struct wbsd_host *host, struct mmc_data *data)
294{
295 unsigned int len, i;
296 struct scatterlist *sg;
297 char *dmabuf = host->dma_buffer;
298 char *sgbuf;
299
300 sg = data->sg;
301 len = data->sg_len;
302
303 for (i = 0; i < len; i++) {
304 sgbuf = sg_virt(&sg[i]);
305 memcpy(sgbuf, dmabuf, sg[i].length);
306 dmabuf += sg[i].length;
307 }
308}
309
310
311
312
313
314static inline void wbsd_get_short_reply(struct wbsd_host *host,
315 struct mmc_command *cmd)
316{
317
318
319
320 if (wbsd_read_index(host, WBSD_IDX_RSPLEN) != WBSD_RSP_SHORT) {
321 cmd->error = -EILSEQ;
322 return;
323 }
324
325 cmd->resp[0] = wbsd_read_index(host, WBSD_IDX_RESP12) << 24;
326 cmd->resp[0] |= wbsd_read_index(host, WBSD_IDX_RESP13) << 16;
327 cmd->resp[0] |= wbsd_read_index(host, WBSD_IDX_RESP14) << 8;
328 cmd->resp[0] |= wbsd_read_index(host, WBSD_IDX_RESP15) << 0;
329 cmd->resp[1] = wbsd_read_index(host, WBSD_IDX_RESP16) << 24;
330}
331
332static inline void wbsd_get_long_reply(struct wbsd_host *host,
333 struct mmc_command *cmd)
334{
335 int i;
336
337
338
339
340 if (wbsd_read_index(host, WBSD_IDX_RSPLEN) != WBSD_RSP_LONG) {
341 cmd->error = -EILSEQ;
342 return;
343 }
344
345 for (i = 0; i < 4; i++) {
346 cmd->resp[i] =
347 wbsd_read_index(host, WBSD_IDX_RESP1 + i * 4) << 24;
348 cmd->resp[i] |=
349 wbsd_read_index(host, WBSD_IDX_RESP2 + i * 4) << 16;
350 cmd->resp[i] |=
351 wbsd_read_index(host, WBSD_IDX_RESP3 + i * 4) << 8;
352 cmd->resp[i] |=
353 wbsd_read_index(host, WBSD_IDX_RESP4 + i * 4) << 0;
354 }
355}
356
357static void wbsd_send_command(struct wbsd_host *host, struct mmc_command *cmd)
358{
359 int i;
360 u8 status, isr;
361
362
363
364
365
366
367 host->isr = 0;
368
369
370
371
372 outb(cmd->opcode, host->base + WBSD_CMDR);
373 for (i = 3; i >= 0; i--)
374 outb((cmd->arg >> (i * 8)) & 0xff, host->base + WBSD_CMDR);
375
376 cmd->error = 0;
377
378
379
380
381 do {
382 status = wbsd_read_index(host, WBSD_IDX_STATUS);
383 } while (status & WBSD_CARDTRAFFIC);
384
385
386
387
388 if (cmd->flags & MMC_RSP_PRESENT) {
389
390
391
392 isr = host->isr;
393
394
395 if (isr & WBSD_INT_CARD)
396 cmd->error = -ENOMEDIUM;
397
398 else if (isr & WBSD_INT_TIMEOUT)
399 cmd->error = -ETIMEDOUT;
400
401 else if ((cmd->flags & MMC_RSP_CRC) && (isr & WBSD_INT_CRC))
402 cmd->error = -EILSEQ;
403
404 else {
405 if (cmd->flags & MMC_RSP_136)
406 wbsd_get_long_reply(host, cmd);
407 else
408 wbsd_get_short_reply(host, cmd);
409 }
410 }
411}
412
413
414
415
416
417static void wbsd_empty_fifo(struct wbsd_host *host)
418{
419 struct mmc_data *data = host->mrq->cmd->data;
420 char *buffer;
421 int i, fsr, fifo;
422
423
424
425
426 if (host->num_sg == 0)
427 return;
428
429 buffer = wbsd_sg_to_buffer(host) + host->offset;
430
431
432
433
434
435 while (!((fsr = inb(host->base + WBSD_FSR)) & WBSD_FIFO_EMPTY)) {
436
437
438
439
440 if (fsr & WBSD_FIFO_FULL)
441 fifo = 16;
442 else if (fsr & WBSD_FIFO_FUTHRE)
443 fifo = 8;
444 else
445 fifo = 1;
446
447 for (i = 0; i < fifo; i++) {
448 *buffer = inb(host->base + WBSD_DFR);
449 buffer++;
450 host->offset++;
451 host->remain--;
452
453 data->bytes_xfered++;
454
455
456
457
458 if (host->remain == 0) {
459
460
461
462 if (!wbsd_next_sg(host))
463 return;
464
465 buffer = wbsd_sg_to_buffer(host);
466 }
467 }
468 }
469
470
471
472
473
474
475 if ((data->blocks * data->blksz - data->bytes_xfered) < 16)
476 tasklet_schedule(&host->fifo_tasklet);
477}
478
479static void wbsd_fill_fifo(struct wbsd_host *host)
480{
481 struct mmc_data *data = host->mrq->cmd->data;
482 char *buffer;
483 int i, fsr, fifo;
484
485
486
487
488
489 if (host->num_sg == 0)
490 return;
491
492 buffer = wbsd_sg_to_buffer(host) + host->offset;
493
494
495
496
497
498 while (!((fsr = inb(host->base + WBSD_FSR)) & WBSD_FIFO_FULL)) {
499
500
501
502
503 if (fsr & WBSD_FIFO_EMPTY)
504 fifo = 0;
505 else if (fsr & WBSD_FIFO_EMTHRE)
506 fifo = 8;
507 else
508 fifo = 15;
509
510 for (i = 16; i > fifo; i--) {
511 outb(*buffer, host->base + WBSD_DFR);
512 buffer++;
513 host->offset++;
514 host->remain--;
515
516 data->bytes_xfered++;
517
518
519
520
521 if (host->remain == 0) {
522
523
524
525 if (!wbsd_next_sg(host))
526 return;
527
528 buffer = wbsd_sg_to_buffer(host);
529 }
530 }
531 }
532
533
534
535
536
537
538 tasklet_schedule(&host->fifo_tasklet);
539}
540
541static void wbsd_prepare_data(struct wbsd_host *host, struct mmc_data *data)
542{
543 u16 blksize;
544 u8 setup;
545 unsigned long dmaflags;
546 unsigned int size;
547
548
549
550
551 size = data->blocks * data->blksz;
552
553
554
555
556
557 if (data->timeout_ns > 127000000)
558 wbsd_write_index(host, WBSD_IDX_TAAC, 127);
559 else {
560 wbsd_write_index(host, WBSD_IDX_TAAC,
561 data->timeout_ns / 1000000);
562 }
563
564 if (data->timeout_clks > 255)
565 wbsd_write_index(host, WBSD_IDX_NSAC, 255);
566 else
567 wbsd_write_index(host, WBSD_IDX_NSAC, data->timeout_clks);
568
569
570
571
572
573
574
575
576
577 if (host->bus_width == MMC_BUS_WIDTH_1) {
578 blksize = data->blksz + 2;
579
580 wbsd_write_index(host, WBSD_IDX_PBSMSB, (blksize >> 4) & 0xF0);
581 wbsd_write_index(host, WBSD_IDX_PBSLSB, blksize & 0xFF);
582 } else if (host->bus_width == MMC_BUS_WIDTH_4) {
583 blksize = data->blksz + 2 * 4;
584
585 wbsd_write_index(host, WBSD_IDX_PBSMSB,
586 ((blksize >> 4) & 0xF0) | WBSD_DATA_WIDTH);
587 wbsd_write_index(host, WBSD_IDX_PBSLSB, blksize & 0xFF);
588 } else {
589 data->error = -EINVAL;
590 return;
591 }
592
593
594
595
596
597
598 setup = wbsd_read_index(host, WBSD_IDX_SETUP);
599 setup |= WBSD_FIFO_RESET;
600 wbsd_write_index(host, WBSD_IDX_SETUP, setup);
601
602
603
604
605 if (host->dma >= 0) {
606
607
608
609 BUG_ON(size > 0x10000);
610 if (size > 0x10000) {
611 data->error = -EINVAL;
612 return;
613 }
614
615
616
617
618
619 if (data->flags & MMC_DATA_WRITE)
620 wbsd_sg_to_dma(host, data);
621
622
623
624
625 dmaflags = claim_dma_lock();
626 disable_dma(host->dma);
627 clear_dma_ff(host->dma);
628 if (data->flags & MMC_DATA_READ)
629 set_dma_mode(host->dma, DMA_MODE_READ & ~0x40);
630 else
631 set_dma_mode(host->dma, DMA_MODE_WRITE & ~0x40);
632 set_dma_addr(host->dma, host->dma_addr);
633 set_dma_count(host->dma, size);
634
635 enable_dma(host->dma);
636 release_dma_lock(dmaflags);
637
638
639
640
641 wbsd_write_index(host, WBSD_IDX_DMA, WBSD_DMA_ENABLE);
642 } else {
643
644
645
646
647 host->firsterr = 1;
648
649
650
651
652 wbsd_init_sg(host, data);
653
654
655
656
657 wbsd_write_index(host, WBSD_IDX_DMA, 0);
658
659
660
661
662
663 if (data->flags & MMC_DATA_READ) {
664 wbsd_write_index(host, WBSD_IDX_FIFOEN,
665 WBSD_FIFOEN_FULL | 8);
666 } else {
667 wbsd_write_index(host, WBSD_IDX_FIFOEN,
668 WBSD_FIFOEN_EMPTY | 8);
669 wbsd_fill_fifo(host);
670 }
671 }
672
673 data->error = 0;
674}
675
676static void wbsd_finish_data(struct wbsd_host *host, struct mmc_data *data)
677{
678 unsigned long dmaflags;
679 int count;
680 u8 status;
681
682 WARN_ON(host->mrq == NULL);
683
684
685
686
687 if (data->stop)
688 wbsd_send_command(host, data->stop);
689
690
691
692
693
694 do {
695 status = wbsd_read_index(host, WBSD_IDX_STATUS);
696 } while (status & (WBSD_BLOCK_READ | WBSD_BLOCK_WRITE));
697
698
699
700
701 if (host->dma >= 0) {
702
703
704
705 wbsd_write_index(host, WBSD_IDX_DMA, 0);
706
707
708
709
710 dmaflags = claim_dma_lock();
711 disable_dma(host->dma);
712 clear_dma_ff(host->dma);
713 count = get_dma_residue(host->dma);
714 release_dma_lock(dmaflags);
715
716 data->bytes_xfered = host->mrq->data->blocks *
717 host->mrq->data->blksz - count;
718 data->bytes_xfered -= data->bytes_xfered % data->blksz;
719
720
721
722
723 if (count) {
724 pr_err("%s: Incomplete DMA transfer. "
725 "%d bytes left.\n",
726 mmc_hostname(host->mmc), count);
727
728 if (!data->error)
729 data->error = -EIO;
730 } else {
731
732
733
734
735 if (data->flags & MMC_DATA_READ)
736 wbsd_dma_to_sg(host, data);
737 }
738
739 if (data->error) {
740 if (data->bytes_xfered)
741 data->bytes_xfered -= data->blksz;
742 }
743 }
744
745 wbsd_request_end(host, host->mrq);
746}
747
748
749
750
751
752
753
754static void wbsd_request(struct mmc_host *mmc, struct mmc_request *mrq)
755{
756 struct wbsd_host *host = mmc_priv(mmc);
757 struct mmc_command *cmd;
758
759
760
761
762 spin_lock_bh(&host->lock);
763
764 BUG_ON(host->mrq != NULL);
765
766 cmd = mrq->cmd;
767
768 host->mrq = mrq;
769
770
771
772
773 if (!(host->flags & WBSD_FCARD_PRESENT)) {
774 cmd->error = -ENOMEDIUM;
775 goto done;
776 }
777
778 if (cmd->data) {
779
780
781
782
783
784
785 switch (cmd->opcode) {
786 case 11:
787 case 17:
788 case 18:
789 case 20:
790 case 24:
791 case 25:
792 case 26:
793 case 27:
794 case 30:
795 case 42:
796 case 56:
797 break;
798
799
800
801 case 51:
802 break;
803
804 default:
805 pr_warn("%s: Data command %d is not supported by this controller\n",
806 mmc_hostname(host->mmc), cmd->opcode);
807 cmd->error = -EINVAL;
808
809 goto done;
810 }
811 }
812
813
814
815
816 if (cmd->data) {
817 wbsd_prepare_data(host, cmd->data);
818
819 if (cmd->data->error)
820 goto done;
821 }
822
823 wbsd_send_command(host, cmd);
824
825
826
827
828
829
830 if (cmd->data && !cmd->error) {
831
832
833
834 if (host->dma == -1)
835 tasklet_schedule(&host->fifo_tasklet);
836
837 spin_unlock_bh(&host->lock);
838
839 return;
840 }
841
842done:
843 wbsd_request_end(host, mrq);
844
845 spin_unlock_bh(&host->lock);
846}
847
848static void wbsd_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
849{
850 struct wbsd_host *host = mmc_priv(mmc);
851 u8 clk, setup, pwr;
852
853 spin_lock_bh(&host->lock);
854
855
856
857
858
859 if (ios->power_mode == MMC_POWER_OFF)
860 wbsd_init_device(host);
861
862 if (ios->clock >= 24000000)
863 clk = WBSD_CLK_24M;
864 else if (ios->clock >= 16000000)
865 clk = WBSD_CLK_16M;
866 else if (ios->clock >= 12000000)
867 clk = WBSD_CLK_12M;
868 else
869 clk = WBSD_CLK_375K;
870
871
872
873
874
875 if (clk != host->clk) {
876 wbsd_write_index(host, WBSD_IDX_CLK, clk);
877 host->clk = clk;
878 }
879
880
881
882
883 if (ios->power_mode != MMC_POWER_OFF) {
884 pwr = inb(host->base + WBSD_CSR);
885 pwr &= ~WBSD_POWER_N;
886 outb(pwr, host->base + WBSD_CSR);
887 }
888
889
890
891
892
893
894 setup = wbsd_read_index(host, WBSD_IDX_SETUP);
895 if (ios->chip_select == MMC_CS_HIGH) {
896 BUG_ON(ios->bus_width != MMC_BUS_WIDTH_1);
897 setup |= WBSD_DAT3_H;
898 host->flags |= WBSD_FIGNORE_DETECT;
899 } else {
900 if (setup & WBSD_DAT3_H) {
901 setup &= ~WBSD_DAT3_H;
902
903
904
905
906
907 mod_timer(&host->ignore_timer, jiffies + HZ / 100);
908 }
909 }
910 wbsd_write_index(host, WBSD_IDX_SETUP, setup);
911
912
913
914
915
916 host->bus_width = ios->bus_width;
917
918 spin_unlock_bh(&host->lock);
919}
920
921static int wbsd_get_ro(struct mmc_host *mmc)
922{
923 struct wbsd_host *host = mmc_priv(mmc);
924 u8 csr;
925
926 spin_lock_bh(&host->lock);
927
928 csr = inb(host->base + WBSD_CSR);
929 csr |= WBSD_MSLED;
930 outb(csr, host->base + WBSD_CSR);
931
932 mdelay(1);
933
934 csr = inb(host->base + WBSD_CSR);
935 csr &= ~WBSD_MSLED;
936 outb(csr, host->base + WBSD_CSR);
937
938 spin_unlock_bh(&host->lock);
939
940 return !!(csr & WBSD_WRPT);
941}
942
943static const struct mmc_host_ops wbsd_ops = {
944 .request = wbsd_request,
945 .set_ios = wbsd_set_ios,
946 .get_ro = wbsd_get_ro,
947};
948
949
950
951
952
953
954
955
956
957
958
959static void wbsd_reset_ignore(struct timer_list *t)
960{
961 struct wbsd_host *host = from_timer(host, t, ignore_timer);
962
963 BUG_ON(host == NULL);
964
965 DBG("Resetting card detection ignore\n");
966
967 spin_lock_bh(&host->lock);
968
969 host->flags &= ~WBSD_FIGNORE_DETECT;
970
971
972
973
974
975 tasklet_schedule(&host->card_tasklet);
976
977 spin_unlock_bh(&host->lock);
978}
979
980
981
982
983
984static inline struct mmc_data *wbsd_get_data(struct wbsd_host *host)
985{
986 WARN_ON(!host->mrq);
987 if (!host->mrq)
988 return NULL;
989
990 WARN_ON(!host->mrq->cmd);
991 if (!host->mrq->cmd)
992 return NULL;
993
994 WARN_ON(!host->mrq->cmd->data);
995 if (!host->mrq->cmd->data)
996 return NULL;
997
998 return host->mrq->cmd->data;
999}
1000
1001static void wbsd_tasklet_card(unsigned long param)
1002{
1003 struct wbsd_host *host = (struct wbsd_host *)param;
1004 u8 csr;
1005 int delay = -1;
1006
1007 spin_lock(&host->lock);
1008
1009 if (host->flags & WBSD_FIGNORE_DETECT) {
1010 spin_unlock(&host->lock);
1011 return;
1012 }
1013
1014 csr = inb(host->base + WBSD_CSR);
1015 WARN_ON(csr == 0xff);
1016
1017 if (csr & WBSD_CARDPRESENT) {
1018 if (!(host->flags & WBSD_FCARD_PRESENT)) {
1019 DBG("Card inserted\n");
1020 host->flags |= WBSD_FCARD_PRESENT;
1021
1022 delay = 500;
1023 }
1024 } else if (host->flags & WBSD_FCARD_PRESENT) {
1025 DBG("Card removed\n");
1026 host->flags &= ~WBSD_FCARD_PRESENT;
1027
1028 if (host->mrq) {
1029 pr_err("%s: Card removed during transfer!\n",
1030 mmc_hostname(host->mmc));
1031 wbsd_reset(host);
1032
1033 host->mrq->cmd->error = -ENOMEDIUM;
1034 tasklet_schedule(&host->finish_tasklet);
1035 }
1036
1037 delay = 0;
1038 }
1039
1040
1041
1042
1043
1044 spin_unlock(&host->lock);
1045
1046 if (delay != -1)
1047 mmc_detect_change(host->mmc, msecs_to_jiffies(delay));
1048}
1049
1050static void wbsd_tasklet_fifo(unsigned long param)
1051{
1052 struct wbsd_host *host = (struct wbsd_host *)param;
1053 struct mmc_data *data;
1054
1055 spin_lock(&host->lock);
1056
1057 if (!host->mrq)
1058 goto end;
1059
1060 data = wbsd_get_data(host);
1061 if (!data)
1062 goto end;
1063
1064 if (data->flags & MMC_DATA_WRITE)
1065 wbsd_fill_fifo(host);
1066 else
1067 wbsd_empty_fifo(host);
1068
1069
1070
1071
1072 if (host->num_sg == 0) {
1073 wbsd_write_index(host, WBSD_IDX_FIFOEN, 0);
1074 tasklet_schedule(&host->finish_tasklet);
1075 }
1076
1077end:
1078 spin_unlock(&host->lock);
1079}
1080
1081static void wbsd_tasklet_crc(unsigned long param)
1082{
1083 struct wbsd_host *host = (struct wbsd_host *)param;
1084 struct mmc_data *data;
1085
1086 spin_lock(&host->lock);
1087
1088 if (!host->mrq)
1089 goto end;
1090
1091 data = wbsd_get_data(host);
1092 if (!data)
1093 goto end;
1094
1095 DBGF("CRC error\n");
1096
1097 data->error = -EILSEQ;
1098
1099 tasklet_schedule(&host->finish_tasklet);
1100
1101end:
1102 spin_unlock(&host->lock);
1103}
1104
1105static void wbsd_tasklet_timeout(unsigned long param)
1106{
1107 struct wbsd_host *host = (struct wbsd_host *)param;
1108 struct mmc_data *data;
1109
1110 spin_lock(&host->lock);
1111
1112 if (!host->mrq)
1113 goto end;
1114
1115 data = wbsd_get_data(host);
1116 if (!data)
1117 goto end;
1118
1119 DBGF("Timeout\n");
1120
1121 data->error = -ETIMEDOUT;
1122
1123 tasklet_schedule(&host->finish_tasklet);
1124
1125end:
1126 spin_unlock(&host->lock);
1127}
1128
1129static void wbsd_tasklet_finish(unsigned long param)
1130{
1131 struct wbsd_host *host = (struct wbsd_host *)param;
1132 struct mmc_data *data;
1133
1134 spin_lock(&host->lock);
1135
1136 WARN_ON(!host->mrq);
1137 if (!host->mrq)
1138 goto end;
1139
1140 data = wbsd_get_data(host);
1141 if (!data)
1142 goto end;
1143
1144 wbsd_finish_data(host, data);
1145
1146end:
1147 spin_unlock(&host->lock);
1148}
1149
1150
1151
1152
1153
1154static irqreturn_t wbsd_irq(int irq, void *dev_id)
1155{
1156 struct wbsd_host *host = dev_id;
1157 int isr;
1158
1159 isr = inb(host->base + WBSD_ISR);
1160
1161
1162
1163
1164 if (isr == 0xff || isr == 0x00)
1165 return IRQ_NONE;
1166
1167 host->isr |= isr;
1168
1169
1170
1171
1172 if (isr & WBSD_INT_CARD)
1173 tasklet_schedule(&host->card_tasklet);
1174 if (isr & WBSD_INT_FIFO_THRE)
1175 tasklet_schedule(&host->fifo_tasklet);
1176 if (isr & WBSD_INT_CRC)
1177 tasklet_hi_schedule(&host->crc_tasklet);
1178 if (isr & WBSD_INT_TIMEOUT)
1179 tasklet_hi_schedule(&host->timeout_tasklet);
1180 if (isr & WBSD_INT_TC)
1181 tasklet_schedule(&host->finish_tasklet);
1182
1183 return IRQ_HANDLED;
1184}
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196static int wbsd_alloc_mmc(struct device *dev)
1197{
1198 struct mmc_host *mmc;
1199 struct wbsd_host *host;
1200
1201
1202
1203
1204 mmc = mmc_alloc_host(sizeof(struct wbsd_host), dev);
1205 if (!mmc)
1206 return -ENOMEM;
1207
1208 host = mmc_priv(mmc);
1209 host->mmc = mmc;
1210
1211 host->dma = -1;
1212
1213
1214
1215
1216 mmc->ops = &wbsd_ops;
1217 mmc->f_min = 375000;
1218 mmc->f_max = 24000000;
1219 mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
1220 mmc->caps = MMC_CAP_4_BIT_DATA;
1221
1222 spin_lock_init(&host->lock);
1223
1224
1225
1226
1227 timer_setup(&host->ignore_timer, wbsd_reset_ignore, 0);
1228
1229
1230
1231
1232
1233 mmc->max_segs = 128;
1234
1235
1236
1237
1238 mmc->max_req_size = 65536;
1239
1240
1241
1242
1243
1244 mmc->max_seg_size = mmc->max_req_size;
1245
1246
1247
1248
1249
1250 mmc->max_blk_size = 4087;
1251
1252
1253
1254
1255
1256 mmc->max_blk_count = mmc->max_req_size;
1257
1258 dev_set_drvdata(dev, mmc);
1259
1260 return 0;
1261}
1262
1263static void wbsd_free_mmc(struct device *dev)
1264{
1265 struct mmc_host *mmc;
1266 struct wbsd_host *host;
1267
1268 mmc = dev_get_drvdata(dev);
1269 if (!mmc)
1270 return;
1271
1272 host = mmc_priv(mmc);
1273 BUG_ON(host == NULL);
1274
1275 del_timer_sync(&host->ignore_timer);
1276
1277 mmc_free_host(mmc);
1278
1279 dev_set_drvdata(dev, NULL);
1280}
1281
1282
1283
1284
1285
1286static int wbsd_scan(struct wbsd_host *host)
1287{
1288 int i, j, k;
1289 int id;
1290
1291
1292
1293
1294
1295 for (i = 0; i < ARRAY_SIZE(config_ports); i++) {
1296 if (!request_region(config_ports[i], 2, DRIVER_NAME))
1297 continue;
1298
1299 for (j = 0; j < ARRAY_SIZE(unlock_codes); j++) {
1300 id = 0xFFFF;
1301
1302 host->config = config_ports[i];
1303 host->unlock_code = unlock_codes[j];
1304
1305 wbsd_unlock_config(host);
1306
1307 outb(WBSD_CONF_ID_HI, config_ports[i]);
1308 id = inb(config_ports[i] + 1) << 8;
1309
1310 outb(WBSD_CONF_ID_LO, config_ports[i]);
1311 id |= inb(config_ports[i] + 1);
1312
1313 wbsd_lock_config(host);
1314
1315 for (k = 0; k < ARRAY_SIZE(valid_ids); k++) {
1316 if (id == valid_ids[k]) {
1317 host->chip_id = id;
1318
1319 return 0;
1320 }
1321 }
1322
1323 if (id != 0xFFFF) {
1324 DBG("Unknown hardware (id %x) found at %x\n",
1325 id, config_ports[i]);
1326 }
1327 }
1328
1329 release_region(config_ports[i], 2);
1330 }
1331
1332 host->config = 0;
1333 host->unlock_code = 0;
1334
1335 return -ENODEV;
1336}
1337
1338
1339
1340
1341
1342static int wbsd_request_region(struct wbsd_host *host, int base)
1343{
1344 if (base & 0x7)
1345 return -EINVAL;
1346
1347 if (!request_region(base, 8, DRIVER_NAME))
1348 return -EIO;
1349
1350 host->base = base;
1351
1352 return 0;
1353}
1354
1355static void wbsd_release_regions(struct wbsd_host *host)
1356{
1357 if (host->base)
1358 release_region(host->base, 8);
1359
1360 host->base = 0;
1361
1362 if (host->config)
1363 release_region(host->config, 2);
1364
1365 host->config = 0;
1366}
1367
1368
1369
1370
1371
1372static void wbsd_request_dma(struct wbsd_host *host, int dma)
1373{
1374 if (dma < 0)
1375 return;
1376
1377 if (request_dma(dma, DRIVER_NAME))
1378 goto err;
1379
1380
1381
1382
1383
1384 host->dma_buffer = kmalloc(WBSD_DMA_SIZE,
1385 GFP_NOIO | GFP_DMA | __GFP_RETRY_MAYFAIL | __GFP_NOWARN);
1386 if (!host->dma_buffer)
1387 goto free;
1388
1389
1390
1391
1392 host->dma_addr = dma_map_single(mmc_dev(host->mmc), host->dma_buffer,
1393 WBSD_DMA_SIZE, DMA_BIDIRECTIONAL);
1394 if (dma_mapping_error(mmc_dev(host->mmc), host->dma_addr))
1395 goto kfree;
1396
1397
1398
1399
1400 if ((host->dma_addr & 0xffff) != 0)
1401 goto unmap;
1402
1403
1404
1405 else if (host->dma_addr >= 0x1000000)
1406 goto unmap;
1407
1408 host->dma = dma;
1409
1410 return;
1411
1412unmap:
1413
1414
1415
1416 BUG_ON(1);
1417
1418 dma_unmap_single(mmc_dev(host->mmc), host->dma_addr,
1419 WBSD_DMA_SIZE, DMA_BIDIRECTIONAL);
1420 host->dma_addr = 0;
1421
1422kfree:
1423 kfree(host->dma_buffer);
1424 host->dma_buffer = NULL;
1425
1426free:
1427 free_dma(dma);
1428
1429err:
1430 pr_warn(DRIVER_NAME ": Unable to allocate DMA %d - falling back on FIFO\n",
1431 dma);
1432}
1433
1434static void wbsd_release_dma(struct wbsd_host *host)
1435{
1436
1437
1438
1439 if (host->dma_buffer) {
1440 dma_unmap_single(mmc_dev(host->mmc), host->dma_addr,
1441 WBSD_DMA_SIZE, DMA_BIDIRECTIONAL);
1442 kfree(host->dma_buffer);
1443 }
1444 if (host->dma >= 0)
1445 free_dma(host->dma);
1446
1447 host->dma = -1;
1448 host->dma_buffer = NULL;
1449 host->dma_addr = 0;
1450}
1451
1452
1453
1454
1455
1456static int wbsd_request_irq(struct wbsd_host *host, int irq)
1457{
1458 int ret;
1459
1460
1461
1462
1463 tasklet_init(&host->card_tasklet, wbsd_tasklet_card,
1464 (unsigned long)host);
1465 tasklet_init(&host->fifo_tasklet, wbsd_tasklet_fifo,
1466 (unsigned long)host);
1467 tasklet_init(&host->crc_tasklet, wbsd_tasklet_crc,
1468 (unsigned long)host);
1469 tasklet_init(&host->timeout_tasklet, wbsd_tasklet_timeout,
1470 (unsigned long)host);
1471 tasklet_init(&host->finish_tasklet, wbsd_tasklet_finish,
1472 (unsigned long)host);
1473
1474
1475
1476
1477 ret = request_irq(irq, wbsd_irq, IRQF_SHARED, DRIVER_NAME, host);
1478 if (ret)
1479 return ret;
1480
1481 host->irq = irq;
1482
1483 return 0;
1484}
1485
1486static void wbsd_release_irq(struct wbsd_host *host)
1487{
1488 if (!host->irq)
1489 return;
1490
1491 free_irq(host->irq, host);
1492
1493 host->irq = 0;
1494
1495 tasklet_kill(&host->card_tasklet);
1496 tasklet_kill(&host->fifo_tasklet);
1497 tasklet_kill(&host->crc_tasklet);
1498 tasklet_kill(&host->timeout_tasklet);
1499 tasklet_kill(&host->finish_tasklet);
1500}
1501
1502
1503
1504
1505
1506static int wbsd_request_resources(struct wbsd_host *host,
1507 int base, int irq, int dma)
1508{
1509 int ret;
1510
1511
1512
1513
1514 ret = wbsd_request_region(host, base);
1515 if (ret)
1516 return ret;
1517
1518
1519
1520
1521 ret = wbsd_request_irq(host, irq);
1522 if (ret)
1523 return ret;
1524
1525
1526
1527
1528 wbsd_request_dma(host, dma);
1529
1530 return 0;
1531}
1532
1533
1534
1535
1536
1537static void wbsd_release_resources(struct wbsd_host *host)
1538{
1539 wbsd_release_dma(host);
1540 wbsd_release_irq(host);
1541 wbsd_release_regions(host);
1542}
1543
1544
1545
1546
1547
1548static void wbsd_chip_config(struct wbsd_host *host)
1549{
1550 wbsd_unlock_config(host);
1551
1552
1553
1554
1555 wbsd_write_config(host, WBSD_CONF_SWRST, 1);
1556 wbsd_write_config(host, WBSD_CONF_SWRST, 0);
1557
1558
1559
1560
1561 wbsd_write_config(host, WBSD_CONF_DEVICE, DEVICE_SD);
1562
1563
1564
1565
1566 wbsd_write_config(host, WBSD_CONF_PINS, WBSD_PINS_DETECT_GP11);
1567
1568
1569
1570
1571 wbsd_write_config(host, WBSD_CONF_PORT_HI, host->base >> 8);
1572 wbsd_write_config(host, WBSD_CONF_PORT_LO, host->base & 0xff);
1573
1574 wbsd_write_config(host, WBSD_CONF_IRQ, host->irq);
1575
1576 if (host->dma >= 0)
1577 wbsd_write_config(host, WBSD_CONF_DRQ, host->dma);
1578
1579
1580
1581
1582 wbsd_write_config(host, WBSD_CONF_ENABLE, 1);
1583 wbsd_write_config(host, WBSD_CONF_POWER, 0x20);
1584
1585 wbsd_lock_config(host);
1586}
1587
1588
1589
1590
1591
1592static int wbsd_chip_validate(struct wbsd_host *host)
1593{
1594 int base, irq, dma;
1595
1596 wbsd_unlock_config(host);
1597
1598
1599
1600
1601 wbsd_write_config(host, WBSD_CONF_DEVICE, DEVICE_SD);
1602
1603
1604
1605
1606 base = wbsd_read_config(host, WBSD_CONF_PORT_HI) << 8;
1607 base |= wbsd_read_config(host, WBSD_CONF_PORT_LO);
1608
1609 irq = wbsd_read_config(host, WBSD_CONF_IRQ);
1610
1611 dma = wbsd_read_config(host, WBSD_CONF_DRQ);
1612
1613 wbsd_lock_config(host);
1614
1615
1616
1617
1618 if (base != host->base)
1619 return 0;
1620 if (irq != host->irq)
1621 return 0;
1622 if ((dma != host->dma) && (host->dma != -1))
1623 return 0;
1624
1625 return 1;
1626}
1627
1628
1629
1630
1631
1632static void wbsd_chip_poweroff(struct wbsd_host *host)
1633{
1634 wbsd_unlock_config(host);
1635
1636 wbsd_write_config(host, WBSD_CONF_DEVICE, DEVICE_SD);
1637 wbsd_write_config(host, WBSD_CONF_ENABLE, 0);
1638
1639 wbsd_lock_config(host);
1640}
1641
1642
1643
1644
1645
1646
1647
1648static int wbsd_init(struct device *dev, int base, int irq, int dma,
1649 int pnp)
1650{
1651 struct wbsd_host *host = NULL;
1652 struct mmc_host *mmc = NULL;
1653 int ret;
1654
1655 ret = wbsd_alloc_mmc(dev);
1656 if (ret)
1657 return ret;
1658
1659 mmc = dev_get_drvdata(dev);
1660 host = mmc_priv(mmc);
1661
1662
1663
1664
1665 ret = wbsd_scan(host);
1666 if (ret) {
1667 if (pnp && (ret == -ENODEV)) {
1668 pr_warn(DRIVER_NAME ": Unable to confirm device presence - you may experience lock-ups\n");
1669 } else {
1670 wbsd_free_mmc(dev);
1671 return ret;
1672 }
1673 }
1674
1675
1676
1677
1678 ret = wbsd_request_resources(host, base, irq, dma);
1679 if (ret) {
1680 wbsd_release_resources(host);
1681 wbsd_free_mmc(dev);
1682 return ret;
1683 }
1684
1685
1686
1687
1688 if (pnp) {
1689 if ((host->config != 0) && !wbsd_chip_validate(host)) {
1690 pr_warn(DRIVER_NAME ": PnP active but chip not configured! You probably have a buggy BIOS. Configuring chip manually.\n");
1691 wbsd_chip_config(host);
1692 }
1693 } else
1694 wbsd_chip_config(host);
1695
1696
1697
1698
1699
1700#ifdef CONFIG_PM
1701 if (host->config) {
1702 wbsd_unlock_config(host);
1703 wbsd_write_config(host, WBSD_CONF_PME, 0xA0);
1704 wbsd_lock_config(host);
1705 }
1706#endif
1707
1708
1709
1710 mdelay(5);
1711
1712
1713
1714
1715 wbsd_init_device(host);
1716
1717 mmc_add_host(mmc);
1718
1719 pr_info("%s: W83L51xD", mmc_hostname(mmc));
1720 if (host->chip_id != 0)
1721 printk(" id %x", (int)host->chip_id);
1722 printk(" at 0x%x irq %d", (int)host->base, (int)host->irq);
1723 if (host->dma >= 0)
1724 printk(" dma %d", (int)host->dma);
1725 else
1726 printk(" FIFO");
1727 if (pnp)
1728 printk(" PnP");
1729 printk("\n");
1730
1731 return 0;
1732}
1733
1734static void wbsd_shutdown(struct device *dev, int pnp)
1735{
1736 struct mmc_host *mmc = dev_get_drvdata(dev);
1737 struct wbsd_host *host;
1738
1739 if (!mmc)
1740 return;
1741
1742 host = mmc_priv(mmc);
1743
1744 mmc_remove_host(mmc);
1745
1746
1747
1748
1749 if (!pnp)
1750 wbsd_chip_poweroff(host);
1751
1752 wbsd_release_resources(host);
1753
1754 wbsd_free_mmc(dev);
1755}
1756
1757
1758
1759
1760
1761static int wbsd_probe(struct platform_device *dev)
1762{
1763
1764 return wbsd_init(&dev->dev, param_io, param_irq, param_dma, 0);
1765}
1766
1767static int wbsd_remove(struct platform_device *dev)
1768{
1769 wbsd_shutdown(&dev->dev, 0);
1770
1771 return 0;
1772}
1773
1774
1775
1776
1777
1778#ifdef CONFIG_PNP
1779
1780static int
1781wbsd_pnp_probe(struct pnp_dev *pnpdev, const struct pnp_device_id *dev_id)
1782{
1783 int io, irq, dma;
1784
1785
1786
1787
1788 io = pnp_port_start(pnpdev, 0);
1789 irq = pnp_irq(pnpdev, 0);
1790 if (pnp_dma_valid(pnpdev, 0))
1791 dma = pnp_dma(pnpdev, 0);
1792 else
1793 dma = -1;
1794
1795 DBGF("PnP resources: port %3x irq %d dma %d\n", io, irq, dma);
1796
1797 return wbsd_init(&pnpdev->dev, io, irq, dma, 1);
1798}
1799
1800static void wbsd_pnp_remove(struct pnp_dev *dev)
1801{
1802 wbsd_shutdown(&dev->dev, 1);
1803}
1804
1805#endif
1806
1807
1808
1809
1810
1811#ifdef CONFIG_PM
1812
1813static int wbsd_platform_suspend(struct platform_device *dev,
1814 pm_message_t state)
1815{
1816 struct mmc_host *mmc = platform_get_drvdata(dev);
1817 struct wbsd_host *host;
1818
1819 if (mmc == NULL)
1820 return 0;
1821
1822 DBGF("Suspending...\n");
1823
1824 host = mmc_priv(mmc);
1825
1826 wbsd_chip_poweroff(host);
1827 return 0;
1828}
1829
1830static int wbsd_platform_resume(struct platform_device *dev)
1831{
1832 struct mmc_host *mmc = platform_get_drvdata(dev);
1833 struct wbsd_host *host;
1834
1835 if (mmc == NULL)
1836 return 0;
1837
1838 DBGF("Resuming...\n");
1839
1840 host = mmc_priv(mmc);
1841
1842 wbsd_chip_config(host);
1843
1844
1845
1846
1847 mdelay(5);
1848
1849 wbsd_init_device(host);
1850 return 0;
1851}
1852
1853#ifdef CONFIG_PNP
1854
1855static int wbsd_pnp_suspend(struct pnp_dev *pnp_dev, pm_message_t state)
1856{
1857 struct mmc_host *mmc = dev_get_drvdata(&pnp_dev->dev);
1858
1859 if (mmc == NULL)
1860 return 0;
1861
1862 DBGF("Suspending...\n");
1863 return 0;
1864}
1865
1866static int wbsd_pnp_resume(struct pnp_dev *pnp_dev)
1867{
1868 struct mmc_host *mmc = dev_get_drvdata(&pnp_dev->dev);
1869 struct wbsd_host *host;
1870
1871 if (mmc == NULL)
1872 return 0;
1873
1874 DBGF("Resuming...\n");
1875
1876 host = mmc_priv(mmc);
1877
1878
1879
1880
1881 if (host->config != 0) {
1882 if (!wbsd_chip_validate(host)) {
1883 pr_warn(DRIVER_NAME ": PnP active but chip not configured! You probably have a buggy BIOS. Configuring chip manually.\n");
1884 wbsd_chip_config(host);
1885 }
1886 }
1887
1888
1889
1890
1891 mdelay(5);
1892
1893 wbsd_init_device(host);
1894 return 0;
1895}
1896
1897#endif
1898
1899#else
1900
1901#define wbsd_platform_suspend NULL
1902#define wbsd_platform_resume NULL
1903
1904#define wbsd_pnp_suspend NULL
1905#define wbsd_pnp_resume NULL
1906
1907#endif
1908
1909static struct platform_device *wbsd_device;
1910
1911static struct platform_driver wbsd_driver = {
1912 .probe = wbsd_probe,
1913 .remove = wbsd_remove,
1914
1915 .suspend = wbsd_platform_suspend,
1916 .resume = wbsd_platform_resume,
1917 .driver = {
1918 .name = DRIVER_NAME,
1919 },
1920};
1921
1922#ifdef CONFIG_PNP
1923
1924static struct pnp_driver wbsd_pnp_driver = {
1925 .name = DRIVER_NAME,
1926 .id_table = pnp_dev_table,
1927 .probe = wbsd_pnp_probe,
1928 .remove = wbsd_pnp_remove,
1929
1930 .suspend = wbsd_pnp_suspend,
1931 .resume = wbsd_pnp_resume,
1932};
1933
1934#endif
1935
1936
1937
1938
1939
1940static int __init wbsd_drv_init(void)
1941{
1942 int result;
1943
1944 pr_info(DRIVER_NAME
1945 ": Winbond W83L51xD SD/MMC card interface driver\n");
1946 pr_info(DRIVER_NAME ": Copyright(c) Pierre Ossman\n");
1947
1948#ifdef CONFIG_PNP
1949
1950 if (!param_nopnp) {
1951 result = pnp_register_driver(&wbsd_pnp_driver);
1952 if (result < 0)
1953 return result;
1954 }
1955#endif
1956
1957 if (param_nopnp) {
1958 result = platform_driver_register(&wbsd_driver);
1959 if (result < 0)
1960 return result;
1961
1962 wbsd_device = platform_device_alloc(DRIVER_NAME, -1);
1963 if (!wbsd_device) {
1964 platform_driver_unregister(&wbsd_driver);
1965 return -ENOMEM;
1966 }
1967
1968 result = platform_device_add(wbsd_device);
1969 if (result) {
1970 platform_device_put(wbsd_device);
1971 platform_driver_unregister(&wbsd_driver);
1972 return result;
1973 }
1974 }
1975
1976 return 0;
1977}
1978
1979static void __exit wbsd_drv_exit(void)
1980{
1981#ifdef CONFIG_PNP
1982
1983 if (!param_nopnp)
1984 pnp_unregister_driver(&wbsd_pnp_driver);
1985
1986#endif
1987
1988 if (param_nopnp) {
1989 platform_device_unregister(wbsd_device);
1990
1991 platform_driver_unregister(&wbsd_driver);
1992 }
1993
1994 DBG("unloaded\n");
1995}
1996
1997module_init(wbsd_drv_init);
1998module_exit(wbsd_drv_exit);
1999#ifdef CONFIG_PNP
2000module_param_hw_named(nopnp, param_nopnp, uint, other, 0444);
2001#endif
2002module_param_hw_named(io, param_io, uint, ioport, 0444);
2003module_param_hw_named(irq, param_irq, uint, irq, 0444);
2004module_param_hw_named(dma, param_dma, int, dma, 0444);
2005
2006MODULE_LICENSE("GPL");
2007MODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>");
2008MODULE_DESCRIPTION("Winbond W83L51xD SD/MMC card interface driver");
2009
2010#ifdef CONFIG_PNP
2011MODULE_PARM_DESC(nopnp, "Scan for device instead of relying on PNP. (default 0)");
2012#endif
2013MODULE_PARM_DESC(io, "I/O base to allocate. Must be 8 byte aligned. (default 0x248)");
2014MODULE_PARM_DESC(irq, "IRQ to allocate. (default 6)");
2015MODULE_PARM_DESC(dma, "DMA channel to allocate. -1 for no DMA. (default 2)");
2016