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knfsd: Validate filehandle type in fsid_source
[linux-2.6/mini2440.git] / drivers / ata / pdc_adma.c
blob5c79271401afc29ecb216ab46b6c46b7b82ff1a5
1 /*
2 * pdc_adma.c - Pacific Digital Corporation ADMA
3 *
4 * Maintained by: Mark Lord <mlord@pobox.com>
5 *
6 * Copyright 2005 Mark Lord
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2, or (at your option)
11 * any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; see the file COPYING. If not, write to
20 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
21 *
22 *
23 * libata documentation is available via 'make {ps|pdf}docs',
24 * as Documentation/DocBook/libata.*
25 *
26 *
27 * Supports ATA disks in single-packet ADMA mode.
28 * Uses PIO for everything else.
29 *
30 * TODO: Use ADMA transfers for ATAPI devices, when possible.
31 * This requires careful attention to a number of quirks of the chip.
32 *
33 */
34
35 #include <linux/kernel.h>
36 #include <linux/module.h>
37 #include <linux/pci.h>
38 #include <linux/init.h>
39 #include <linux/blkdev.h>
40 #include <linux/delay.h>
41 #include <linux/interrupt.h>
42 #include <linux/device.h>
43 #include <scsi/scsi_host.h>
44 #include <linux/libata.h>
45
46 #define DRV_NAME "pdc_adma"
47 #define DRV_VERSION "1.0"
48
49 /* macro to calculate base address for ATA regs */
50 #define ADMA_ATA_REGS(base,port_no) ((base) + ((port_no) * 0x40))
51
52 /* macro to calculate base address for ADMA regs */
53 #define ADMA_REGS(base,port_no) ((base) + 0x80 + ((port_no) * 0x20))
54
55 /* macro to obtain addresses from ata_port */
56 #define ADMA_PORT_REGS(ap) \
57 ADMA_REGS((ap)->host->iomap[ADMA_MMIO_BAR], ap->port_no)
58
59 enum {
60 ADMA_MMIO_BAR = 4,
61
62 ADMA_PORTS = 2,
63 ADMA_CPB_BYTES = 40,
64 ADMA_PRD_BYTES = LIBATA_MAX_PRD * 16,
65 ADMA_PKT_BYTES = ADMA_CPB_BYTES + ADMA_PRD_BYTES,
66
67 ADMA_DMA_BOUNDARY = 0xffffffff,
68
69 /* global register offsets */
70 ADMA_MODE_LOCK = 0x00c7,
71
72 /* per-channel register offsets */
73 ADMA_CONTROL = 0x0000, /* ADMA control */
74 ADMA_STATUS = 0x0002, /* ADMA status */
75 ADMA_CPB_COUNT = 0x0004, /* CPB count */
76 ADMA_CPB_CURRENT = 0x000c, /* current CPB address */
77 ADMA_CPB_NEXT = 0x000c, /* next CPB address */
78 ADMA_CPB_LOOKUP = 0x0010, /* CPB lookup table */
79 ADMA_FIFO_IN = 0x0014, /* input FIFO threshold */
80 ADMA_FIFO_OUT = 0x0016, /* output FIFO threshold */
81
82 /* ADMA_CONTROL register bits */
83 aNIEN = (1 << 8), /* irq mask: 1==masked */
84 aGO = (1 << 7), /* packet trigger ("Go!") */
85 aRSTADM = (1 << 5), /* ADMA logic reset */
86 aPIOMD4 = 0x0003, /* PIO mode 4 */
87
88 /* ADMA_STATUS register bits */
89 aPSD = (1 << 6),
90 aUIRQ = (1 << 4),
91 aPERR = (1 << 0),
92
93 /* CPB bits */
94 cDONE = (1 << 0),
95 cVLD = (1 << 0),
96 cDAT = (1 << 2),
97 cIEN = (1 << 3),
98
99 /* PRD bits */
100 pORD = (1 << 4),
101 pDIRO = (1 << 5),
102 pEND = (1 << 7),
103
104 /* ATA register flags */
105 rIGN = (1 << 5),
106 rEND = (1 << 7),
107
108 /* ATA register addresses */
109 ADMA_REGS_CONTROL = 0x0e,
110 ADMA_REGS_SECTOR_COUNT = 0x12,
111 ADMA_REGS_LBA_LOW = 0x13,
112 ADMA_REGS_LBA_MID = 0x14,
113 ADMA_REGS_LBA_HIGH = 0x15,
114 ADMA_REGS_DEVICE = 0x16,
115 ADMA_REGS_COMMAND = 0x17,
116
117 /* PCI device IDs */
118 board_1841_idx = 0, /* ADMA 2-port controller */
119 };
120
121 typedef enum { adma_state_idle, adma_state_pkt, adma_state_mmio } adma_state_t;
122
123 struct adma_port_priv {
124 u8 *pkt;
125 dma_addr_t pkt_dma;
126 adma_state_t state;
127 };
128
129 static int adma_ata_init_one (struct pci_dev *pdev,
130 const struct pci_device_id *ent);
131 static int adma_port_start(struct ata_port *ap);
132 static void adma_host_stop(struct ata_host *host);
133 static void adma_port_stop(struct ata_port *ap);
134 static void adma_phy_reset(struct ata_port *ap);
135 static void adma_qc_prep(struct ata_queued_cmd *qc);
136 static unsigned int adma_qc_issue(struct ata_queued_cmd *qc);
137 static int adma_check_atapi_dma(struct ata_queued_cmd *qc);
138 static void adma_bmdma_stop(struct ata_queued_cmd *qc);
139 static u8 adma_bmdma_status(struct ata_port *ap);
140 static void adma_irq_clear(struct ata_port *ap);
141 static void adma_eng_timeout(struct ata_port *ap);
142
143 static struct scsi_host_template adma_ata_sht = {
144 .module = THIS_MODULE,
145 .name = DRV_NAME,
146 .ioctl = ata_scsi_ioctl,
147 .queuecommand = ata_scsi_queuecmd,
148 .slave_configure = ata_scsi_slave_config,
149 .slave_destroy = ata_scsi_slave_destroy,
150 .bios_param = ata_std_bios_param,
151 .proc_name = DRV_NAME,
152 .can_queue = ATA_DEF_QUEUE,
153 .this_id = ATA_SHT_THIS_ID,
154 .sg_tablesize = LIBATA_MAX_PRD,
155 .dma_boundary = ADMA_DMA_BOUNDARY,
156 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
157 .use_clustering = ENABLE_CLUSTERING,
158 .emulated = ATA_SHT_EMULATED,
159 };
160
161 static const struct ata_port_operations adma_ata_ops = {
162 .port_disable = ata_port_disable,
163 .tf_load = ata_tf_load,
164 .tf_read = ata_tf_read,
165 .exec_command = ata_exec_command,
166 .check_status = ata_check_status,
167 .dev_select = ata_std_dev_select,
168 .phy_reset = adma_phy_reset,
169 .check_atapi_dma = adma_check_atapi_dma,
170 .data_xfer = ata_data_xfer,
171 .qc_prep = adma_qc_prep,
172 .qc_issue = adma_qc_issue,
173 .eng_timeout = adma_eng_timeout,
174 .irq_clear = adma_irq_clear,
175 .irq_on = ata_irq_on,
176 .irq_ack = ata_irq_ack,
177 .port_start = adma_port_start,
178 .port_stop = adma_port_stop,
179 .host_stop = adma_host_stop,
180 .bmdma_stop = adma_bmdma_stop,
181 .bmdma_status = adma_bmdma_status,
182 };
183
184 static struct ata_port_info adma_port_info[] = {
185 /* board_1841_idx */
186 {
187 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST |
188 ATA_FLAG_NO_LEGACY | ATA_FLAG_MMIO |
189 ATA_FLAG_PIO_POLLING,
190 .pio_mask = 0x10, /* pio4 */
191 .udma_mask = ATA_UDMA4,
192 .port_ops = &adma_ata_ops,
193 },
194 };
195
196 static const struct pci_device_id adma_ata_pci_tbl[] = {
197 { PCI_VDEVICE(PDC, 0x1841), board_1841_idx },
198
199 { } /* terminate list */
200 };
201
202 static struct pci_driver adma_ata_pci_driver = {
203 .name = DRV_NAME,
204 .id_table = adma_ata_pci_tbl,
205 .probe = adma_ata_init_one,
206 .remove = ata_pci_remove_one,
207 };
208
209 static int adma_check_atapi_dma(struct ata_queued_cmd *qc)
210 {
211 return 1; /* ATAPI DMA not yet supported */
212 }
213
214 static void adma_bmdma_stop(struct ata_queued_cmd *qc)
215 {
216 /* nothing */
217 }
218
219 static u8 adma_bmdma_status(struct ata_port *ap)
220 {
221 return 0;
222 }
223
224 static void adma_irq_clear(struct ata_port *ap)
225 {
226 /* nothing */
227 }
228
229 static void adma_reset_engine(struct ata_port *ap)
230 {
231 void __iomem *chan = ADMA_PORT_REGS(ap);
232
233 /* reset ADMA to idle state */
234 writew(aPIOMD4 | aNIEN | aRSTADM, chan + ADMA_CONTROL);
235 udelay(2);
236 writew(aPIOMD4, chan + ADMA_CONTROL);
237 udelay(2);
238 }
239
240 static void adma_reinit_engine(struct ata_port *ap)
241 {
242 struct adma_port_priv *pp = ap->private_data;
243 void __iomem *chan = ADMA_PORT_REGS(ap);
244
245 /* mask/clear ATA interrupts */
246 writeb(ATA_NIEN, ap->ioaddr.ctl_addr);
247 ata_check_status(ap);
248
249 /* reset the ADMA engine */
250 adma_reset_engine(ap);
251
252 /* set in-FIFO threshold to 0x100 */
253 writew(0x100, chan + ADMA_FIFO_IN);
254
255 /* set CPB pointer */
256 writel((u32)pp->pkt_dma, chan + ADMA_CPB_NEXT);
257
258 /* set out-FIFO threshold to 0x100 */
259 writew(0x100, chan + ADMA_FIFO_OUT);
260
261 /* set CPB count */
262 writew(1, chan + ADMA_CPB_COUNT);
263
264 /* read/discard ADMA status */
265 readb(chan + ADMA_STATUS);
266 }
267
268 static inline void adma_enter_reg_mode(struct ata_port *ap)
269 {
270 void __iomem *chan = ADMA_PORT_REGS(ap);
271
272 writew(aPIOMD4, chan + ADMA_CONTROL);
273 readb(chan + ADMA_STATUS); /* flush */
274 }
275
276 static void adma_phy_reset(struct ata_port *ap)
277 {
278 struct adma_port_priv *pp = ap->private_data;
279
280 pp->state = adma_state_idle;
281 adma_reinit_engine(ap);
282 ata_port_probe(ap);
283 ata_bus_reset(ap);
284 }
285
286 static void adma_eng_timeout(struct ata_port *ap)
287 {
288 struct adma_port_priv *pp = ap->private_data;
289
290 if (pp->state != adma_state_idle) /* healthy paranoia */
291 pp->state = adma_state_mmio;
292 adma_reinit_engine(ap);
293 ata_eng_timeout(ap);
294 }
295
296 static int adma_fill_sg(struct ata_queued_cmd *qc)
297 {
298 struct scatterlist *sg;
299 struct ata_port *ap = qc->ap;
300 struct adma_port_priv *pp = ap->private_data;
301 u8 *buf = pp->pkt;
302 int i = (2 + buf[3]) * 8;
303 u8 pFLAGS = pORD | ((qc->tf.flags & ATA_TFLAG_WRITE) ? pDIRO : 0);
304
305 ata_for_each_sg(sg, qc) {
306 u32 addr;
307 u32 len;
308
309 addr = (u32)sg_dma_address(sg);
310 *(__le32 *)(buf + i) = cpu_to_le32(addr);
311 i += 4;
312
313 len = sg_dma_len(sg) >> 3;
314 *(__le32 *)(buf + i) = cpu_to_le32(len);
315 i += 4;
316
317 if (ata_sg_is_last(sg, qc))
318 pFLAGS |= pEND;
319 buf[i++] = pFLAGS;
320 buf[i++] = qc->dev->dma_mode & 0xf;
321 buf[i++] = 0; /* pPKLW */
322 buf[i++] = 0; /* reserved */
323
324 *(__le32 *)(buf + i)
325 = (pFLAGS & pEND) ? 0 : cpu_to_le32(pp->pkt_dma + i + 4);
326 i += 4;
327
328 VPRINTK("PRD[%u] = (0x%lX, 0x%X)\n", i/4,
329 (unsigned long)addr, len);
330 }
331 return i;
332 }
333
334 static void adma_qc_prep(struct ata_queued_cmd *qc)
335 {
336 struct adma_port_priv *pp = qc->ap->private_data;
337 u8 *buf = pp->pkt;
338 u32 pkt_dma = (u32)pp->pkt_dma;
339 int i = 0;
340
341 VPRINTK("ENTER\n");
342
343 adma_enter_reg_mode(qc->ap);
344 if (qc->tf.protocol != ATA_PROT_DMA) {
345 ata_qc_prep(qc);
346 return;
347 }
348
349 buf[i++] = 0; /* Response flags */
350 buf[i++] = 0; /* reserved */
351 buf[i++] = cVLD | cDAT | cIEN;
352 i++; /* cLEN, gets filled in below */
353
354 *(__le32 *)(buf+i) = cpu_to_le32(pkt_dma); /* cNCPB */
355 i += 4; /* cNCPB */
356 i += 4; /* cPRD, gets filled in below */
357
358 buf[i++] = 0; /* reserved */
359 buf[i++] = 0; /* reserved */
360 buf[i++] = 0; /* reserved */
361 buf[i++] = 0; /* reserved */
362
363 /* ATA registers; must be a multiple of 4 */
364 buf[i++] = qc->tf.device;
365 buf[i++] = ADMA_REGS_DEVICE;
366 if ((qc->tf.flags & ATA_TFLAG_LBA48)) {
367 buf[i++] = qc->tf.hob_nsect;
368 buf[i++] = ADMA_REGS_SECTOR_COUNT;
369 buf[i++] = qc->tf.hob_lbal;
370 buf[i++] = ADMA_REGS_LBA_LOW;
371 buf[i++] = qc->tf.hob_lbam;
372 buf[i++] = ADMA_REGS_LBA_MID;
373 buf[i++] = qc->tf.hob_lbah;
374 buf[i++] = ADMA_REGS_LBA_HIGH;
375 }
376 buf[i++] = qc->tf.nsect;
377 buf[i++] = ADMA_REGS_SECTOR_COUNT;
378 buf[i++] = qc->tf.lbal;
379 buf[i++] = ADMA_REGS_LBA_LOW;
380 buf[i++] = qc->tf.lbam;
381 buf[i++] = ADMA_REGS_LBA_MID;
382 buf[i++] = qc->tf.lbah;
383 buf[i++] = ADMA_REGS_LBA_HIGH;
384 buf[i++] = 0;
385 buf[i++] = ADMA_REGS_CONTROL;
386 buf[i++] = rIGN;
387 buf[i++] = 0;
388 buf[i++] = qc->tf.command;
389 buf[i++] = ADMA_REGS_COMMAND | rEND;
390
391 buf[3] = (i >> 3) - 2; /* cLEN */
392 *(__le32 *)(buf+8) = cpu_to_le32(pkt_dma + i); /* cPRD */
393
394 i = adma_fill_sg(qc);
395 wmb(); /* flush PRDs and pkt to memory */
396 #if 0
397 /* dump out CPB + PRDs for debug */
398 {
399 int j, len = 0;
400 static char obuf[2048];
401 for (j = 0; j < i; ++j) {
402 len += sprintf(obuf+len, "%02x ", buf[j]);
403 if ((j & 7) == 7) {
404 printk("%s\n", obuf);
405 len = 0;
406 }
407 }
408 if (len)
409 printk("%s\n", obuf);
410 }
411 #endif
412 }
413
414 static inline void adma_packet_start(struct ata_queued_cmd *qc)
415 {
416 struct ata_port *ap = qc->ap;
417 void __iomem *chan = ADMA_PORT_REGS(ap);
418
419 VPRINTK("ENTER, ap %p\n", ap);
420
421 /* fire up the ADMA engine */
422 writew(aPIOMD4 | aGO, chan + ADMA_CONTROL);
423 }
424
425 static unsigned int adma_qc_issue(struct ata_queued_cmd *qc)
426 {
427 struct adma_port_priv *pp = qc->ap->private_data;
428
429 switch (qc->tf.protocol) {
430 case ATA_PROT_DMA:
431 pp->state = adma_state_pkt;
432 adma_packet_start(qc);
433 return 0;
434
435 case ATA_PROT_ATAPI_DMA:
436 BUG();
437 break;
438
439 default:
440 break;
441 }
442
443 pp->state = adma_state_mmio;
444 return ata_qc_issue_prot(qc);
445 }
446
447 static inline unsigned int adma_intr_pkt(struct ata_host *host)
448 {
449 unsigned int handled = 0, port_no;
450
451 for (port_no = 0; port_no < host->n_ports; ++port_no) {
452 struct ata_port *ap = host->ports[port_no];
453 struct adma_port_priv *pp;
454 struct ata_queued_cmd *qc;
455 void __iomem *chan = ADMA_PORT_REGS(ap);
456 u8 status = readb(chan + ADMA_STATUS);
457
458 if (status == 0)
459 continue;
460 handled = 1;
461 adma_enter_reg_mode(ap);
462 if (ap->flags & ATA_FLAG_DISABLED)
463 continue;
464 pp = ap->private_data;
465 if (!pp || pp->state != adma_state_pkt)
466 continue;
467 qc = ata_qc_from_tag(ap, ap->active_tag);
468 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) {
469 if ((status & (aPERR | aPSD | aUIRQ)))
470 qc->err_mask |= AC_ERR_OTHER;
471 else if (pp->pkt[0] != cDONE)
472 qc->err_mask |= AC_ERR_OTHER;
473
474 ata_qc_complete(qc);
475 }
476 }
477 return handled;
478 }
479
480 static inline unsigned int adma_intr_mmio(struct ata_host *host)
481 {
482 unsigned int handled = 0, port_no;
483
484 for (port_no = 0; port_no < host->n_ports; ++port_no) {
485 struct ata_port *ap;
486 ap = host->ports[port_no];
487 if (ap && (!(ap->flags & ATA_FLAG_DISABLED))) {
488 struct ata_queued_cmd *qc;
489 struct adma_port_priv *pp = ap->private_data;
490 if (!pp || pp->state != adma_state_mmio)
491 continue;
492 qc = ata_qc_from_tag(ap, ap->active_tag);
493 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) {
494
495 /* check main status, clearing INTRQ */
496 u8 status = ata_check_status(ap);
497 if ((status & ATA_BUSY))
498 continue;
499 DPRINTK("ata%u: protocol %d (dev_stat 0x%X)\n",
500 ap->print_id, qc->tf.protocol, status);
501
502 /* complete taskfile transaction */
503 pp->state = adma_state_idle;
504 qc->err_mask |= ac_err_mask(status);
505 ata_qc_complete(qc);
506 handled = 1;
507 }
508 }
509 }
510 return handled;
511 }
512
513 static irqreturn_t adma_intr(int irq, void *dev_instance)
514 {
515 struct ata_host *host = dev_instance;
516 unsigned int handled = 0;
517
518 VPRINTK("ENTER\n");
519
520 spin_lock(&host->lock);
521 handled = adma_intr_pkt(host) | adma_intr_mmio(host);
522 spin_unlock(&host->lock);
523
524 VPRINTK("EXIT\n");
525
526 return IRQ_RETVAL(handled);
527 }
528
529 static void adma_ata_setup_port(struct ata_ioports *port, void __iomem *base)
530 {
531 port->cmd_addr =
532 port->data_addr = base + 0x000;
533 port->error_addr =
534 port->feature_addr = base + 0x004;
535 port->nsect_addr = base + 0x008;
536 port->lbal_addr = base + 0x00c;
537 port->lbam_addr = base + 0x010;
538 port->lbah_addr = base + 0x014;
539 port->device_addr = base + 0x018;
540 port->status_addr =
541 port->command_addr = base + 0x01c;
542 port->altstatus_addr =
543 port->ctl_addr = base + 0x038;
544 }
545
546 static int adma_port_start(struct ata_port *ap)
547 {
548 struct device *dev = ap->host->dev;
549 struct adma_port_priv *pp;
550 int rc;
551
552 rc = ata_port_start(ap);
553 if (rc)
554 return rc;
555 adma_enter_reg_mode(ap);
556 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
557 if (!pp)
558 return -ENOMEM;
559 pp->pkt = dmam_alloc_coherent(dev, ADMA_PKT_BYTES, &pp->pkt_dma,
560 GFP_KERNEL);
561 if (!pp->pkt)
562 return -ENOMEM;
563 /* paranoia? */
564 if ((pp->pkt_dma & 7) != 0) {
565 printk("bad alignment for pp->pkt_dma: %08x\n",
566 (u32)pp->pkt_dma);
567 return -ENOMEM;
568 }
569 memset(pp->pkt, 0, ADMA_PKT_BYTES);
570 ap->private_data = pp;
571 adma_reinit_engine(ap);
572 return 0;
573 }
574
575 static void adma_port_stop(struct ata_port *ap)
576 {
577 adma_reset_engine(ap);
578 }
579
580 static void adma_host_stop(struct ata_host *host)
581 {
582 unsigned int port_no;
583
584 for (port_no = 0; port_no < ADMA_PORTS; ++port_no)
585 adma_reset_engine(host->ports[port_no]);
586 }
587
588 static void adma_host_init(struct ata_host *host, unsigned int chip_id)
589 {
590 unsigned int port_no;
591
592 /* enable/lock aGO operation */
593 writeb(7, host->iomap[ADMA_MMIO_BAR] + ADMA_MODE_LOCK);
594
595 /* reset the ADMA logic */
596 for (port_no = 0; port_no < ADMA_PORTS; ++port_no)
597 adma_reset_engine(host->ports[port_no]);
598 }
599
600 static int adma_set_dma_masks(struct pci_dev *pdev, void __iomem *mmio_base)
601 {
602 int rc;
603
604 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
605 if (rc) {
606 dev_printk(KERN_ERR, &pdev->dev,
607 "32-bit DMA enable failed\n");
608 return rc;
609 }
610 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
611 if (rc) {
612 dev_printk(KERN_ERR, &pdev->dev,
613 "32-bit consistent DMA enable failed\n");
614 return rc;
615 }
616 return 0;
617 }
618
619 static int adma_ata_init_one(struct pci_dev *pdev,
620 const struct pci_device_id *ent)
621 {
622 static int printed_version;
623 unsigned int board_idx = (unsigned int) ent->driver_data;
624 const struct ata_port_info *ppi[] = { &adma_port_info[board_idx], NULL };
625 struct ata_host *host;
626 void __iomem *mmio_base;
627 int rc, port_no;
628
629 if (!printed_version++)
630 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
631
632 /* alloc host */
633 host = ata_host_alloc_pinfo(&pdev->dev, ppi, ADMA_PORTS);
634 if (!host)
635 return -ENOMEM;
636
637 /* acquire resources and fill host */
638 rc = pcim_enable_device(pdev);
639 if (rc)
640 return rc;
641
642 if ((pci_resource_flags(pdev, 4) & IORESOURCE_MEM) == 0)
643 return -ENODEV;
644
645 rc = pcim_iomap_regions(pdev, 1 << ADMA_MMIO_BAR, DRV_NAME);
646 if (rc)
647 return rc;
648 host->iomap = pcim_iomap_table(pdev);
649 mmio_base = host->iomap[ADMA_MMIO_BAR];
650
651 rc = adma_set_dma_masks(pdev, mmio_base);
652 if (rc)
653 return rc;
654
655 for (port_no = 0; port_no < ADMA_PORTS; ++port_no)
656 adma_ata_setup_port(&host->ports[port_no]->ioaddr,
657 ADMA_ATA_REGS(mmio_base, port_no));
658
659 /* initialize adapter */
660 adma_host_init(host, board_idx);
661
662 pci_set_master(pdev);
663 return ata_host_activate(host, pdev->irq, adma_intr, IRQF_SHARED,
664 &adma_ata_sht);
665 }
666
667 static int __init adma_ata_init(void)
668 {
669 return pci_register_driver(&adma_ata_pci_driver);
670 }
671
672 static void __exit adma_ata_exit(void)
673 {
674 pci_unregister_driver(&adma_ata_pci_driver);
675 }
676
677 MODULE_AUTHOR("Mark Lord");
678 MODULE_DESCRIPTION("Pacific Digital Corporation ADMA low-level driver");
679 MODULE_LICENSE("GPL");
680 MODULE_DEVICE_TABLE(pci, adma_ata_pci_tbl);
681 MODULE_VERSION(DRV_VERSION);
682
683 module_init(adma_ata_init);
684 module_exit(adma_ata_exit);
Support for the Chinese Samsung S3C2440 based development boards