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timerfd: Allow timers to be cancelled when clock was set
[linux-2.6/linux-mips.git] / drivers / ata / sata_qstor.c
blobc5603265fa58120ae74613bf4bf29666293acfd1
1 /*
2 * sata_qstor.c - Pacific Digital Corporation QStor SATA
3 *
4 * Maintained by: Mark Lord <mlord@pobox.com>
5 *
6 * Copyright 2005 Pacific Digital Corporation.
7 * (OSL/GPL code release authorized by Jalil Fadavi).
8 *
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2, or (at your option)
13 * any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; see the file COPYING. If not, write to
22 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
23 *
24 *
25 * libata documentation is available via 'make {ps|pdf}docs',
26 * as Documentation/DocBook/libata.*
27 *
28 */
29
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/gfp.h>
33 #include <linux/pci.h>
34 #include <linux/init.h>
35 #include <linux/blkdev.h>
36 #include <linux/delay.h>
37 #include <linux/interrupt.h>
38 #include <linux/device.h>
39 #include <scsi/scsi_host.h>
40 #include <linux/libata.h>
41
42 #define DRV_NAME "sata_qstor"
43 #define DRV_VERSION "0.09"
44
45 enum {
46 QS_MMIO_BAR = 4,
47
48 QS_PORTS = 4,
49 QS_MAX_PRD = LIBATA_MAX_PRD,
50 QS_CPB_ORDER = 6,
51 QS_CPB_BYTES = (1 << QS_CPB_ORDER),
52 QS_PRD_BYTES = QS_MAX_PRD * 16,
53 QS_PKT_BYTES = QS_CPB_BYTES + QS_PRD_BYTES,
54
55 /* global register offsets */
56 QS_HCF_CNFG3 = 0x0003, /* host configuration offset */
57 QS_HID_HPHY = 0x0004, /* host physical interface info */
58 QS_HCT_CTRL = 0x00e4, /* global interrupt mask offset */
59 QS_HST_SFF = 0x0100, /* host status fifo offset */
60 QS_HVS_SERD3 = 0x0393, /* PHY enable offset */
61
62 /* global control bits */
63 QS_HPHY_64BIT = (1 << 1), /* 64-bit bus detected */
64 QS_CNFG3_GSRST = 0x01, /* global chip reset */
65 QS_SERD3_PHY_ENA = 0xf0, /* PHY detection ENAble*/
66
67 /* per-channel register offsets */
68 QS_CCF_CPBA = 0x0710, /* chan CPB base address */
69 QS_CCF_CSEP = 0x0718, /* chan CPB separation factor */
70 QS_CFC_HUFT = 0x0800, /* host upstream fifo threshold */
71 QS_CFC_HDFT = 0x0804, /* host downstream fifo threshold */
72 QS_CFC_DUFT = 0x0808, /* dev upstream fifo threshold */
73 QS_CFC_DDFT = 0x080c, /* dev downstream fifo threshold */
74 QS_CCT_CTR0 = 0x0900, /* chan control-0 offset */
75 QS_CCT_CTR1 = 0x0901, /* chan control-1 offset */
76 QS_CCT_CFF = 0x0a00, /* chan command fifo offset */
77
78 /* channel control bits */
79 QS_CTR0_REG = (1 << 1), /* register mode (vs. pkt mode) */
80 QS_CTR0_CLER = (1 << 2), /* clear channel errors */
81 QS_CTR1_RDEV = (1 << 1), /* sata phy/comms reset */
82 QS_CTR1_RCHN = (1 << 4), /* reset channel logic */
83 QS_CCF_RUN_PKT = 0x107, /* RUN a new dma PKT */
84
85 /* pkt sub-field headers */
86 QS_HCB_HDR = 0x01, /* Host Control Block header */
87 QS_DCB_HDR = 0x02, /* Device Control Block header */
88
89 /* pkt HCB flag bits */
90 QS_HF_DIRO = (1 << 0), /* data DIRection Out */
91 QS_HF_DAT = (1 << 3), /* DATa pkt */
92 QS_HF_IEN = (1 << 4), /* Interrupt ENable */
93 QS_HF_VLD = (1 << 5), /* VaLiD pkt */
94
95 /* pkt DCB flag bits */
96 QS_DF_PORD = (1 << 2), /* Pio OR Dma */
97 QS_DF_ELBA = (1 << 3), /* Extended LBA (lba48) */
98
99 /* PCI device IDs */
100 board_2068_idx = 0, /* QStor 4-port SATA/RAID */
101 };
102
103 enum {
104 QS_DMA_BOUNDARY = ~0UL
105 };
106
107 typedef enum { qs_state_mmio, qs_state_pkt } qs_state_t;
108
109 struct qs_port_priv {
110 u8 *pkt;
111 dma_addr_t pkt_dma;
112 qs_state_t state;
113 };
114
115 static int qs_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
116 static int qs_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
117 static int qs_ata_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
118 static int qs_port_start(struct ata_port *ap);
119 static void qs_host_stop(struct ata_host *host);
120 static void qs_qc_prep(struct ata_queued_cmd *qc);
121 static unsigned int qs_qc_issue(struct ata_queued_cmd *qc);
122 static int qs_check_atapi_dma(struct ata_queued_cmd *qc);
123 static void qs_freeze(struct ata_port *ap);
124 static void qs_thaw(struct ata_port *ap);
125 static int qs_prereset(struct ata_link *link, unsigned long deadline);
126 static void qs_error_handler(struct ata_port *ap);
127
128 static struct scsi_host_template qs_ata_sht = {
129 ATA_BASE_SHT(DRV_NAME),
130 .sg_tablesize = QS_MAX_PRD,
131 .dma_boundary = QS_DMA_BOUNDARY,
132 };
133
134 static struct ata_port_operations qs_ata_ops = {
135 .inherits = &ata_sff_port_ops,
136
137 .check_atapi_dma = qs_check_atapi_dma,
138 .qc_prep = qs_qc_prep,
139 .qc_issue = qs_qc_issue,
140
141 .freeze = qs_freeze,
142 .thaw = qs_thaw,
143 .prereset = qs_prereset,
144 .softreset = ATA_OP_NULL,
145 .error_handler = qs_error_handler,
146 .lost_interrupt = ATA_OP_NULL,
147
148 .scr_read = qs_scr_read,
149 .scr_write = qs_scr_write,
150
151 .port_start = qs_port_start,
152 .host_stop = qs_host_stop,
153 };
154
155 static const struct ata_port_info qs_port_info[] = {
156 /* board_2068_idx */
157 {
158 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_POLLING,
159 .pio_mask = ATA_PIO4_ONLY,
160 .udma_mask = ATA_UDMA6,
161 .port_ops = &qs_ata_ops,
162 },
163 };
164
165 static const struct pci_device_id qs_ata_pci_tbl[] = {
166 { PCI_VDEVICE(PDC, 0x2068), board_2068_idx },
167
168 { } /* terminate list */
169 };
170
171 static struct pci_driver qs_ata_pci_driver = {
172 .name = DRV_NAME,
173 .id_table = qs_ata_pci_tbl,
174 .probe = qs_ata_init_one,
175 .remove = ata_pci_remove_one,
176 };
177
178 static void __iomem *qs_mmio_base(struct ata_host *host)
179 {
180 return host->iomap[QS_MMIO_BAR];
181 }
182
183 static int qs_check_atapi_dma(struct ata_queued_cmd *qc)
184 {
185 return 1; /* ATAPI DMA not supported */
186 }
187
188 static inline void qs_enter_reg_mode(struct ata_port *ap)
189 {
190 u8 __iomem *chan = qs_mmio_base(ap->host) + (ap->port_no * 0x4000);
191 struct qs_port_priv *pp = ap->private_data;
192
193 pp->state = qs_state_mmio;
194 writeb(QS_CTR0_REG, chan + QS_CCT_CTR0);
195 readb(chan + QS_CCT_CTR0); /* flush */
196 }
197
198 static inline void qs_reset_channel_logic(struct ata_port *ap)
199 {
200 u8 __iomem *chan = qs_mmio_base(ap->host) + (ap->port_no * 0x4000);
201
202 writeb(QS_CTR1_RCHN, chan + QS_CCT_CTR1);
203 readb(chan + QS_CCT_CTR0); /* flush */
204 qs_enter_reg_mode(ap);
205 }
206
207 static void qs_freeze(struct ata_port *ap)
208 {
209 u8 __iomem *mmio_base = qs_mmio_base(ap->host);
210
211 writeb(0, mmio_base + QS_HCT_CTRL); /* disable host interrupts */
212 qs_enter_reg_mode(ap);
213 }
214
215 static void qs_thaw(struct ata_port *ap)
216 {
217 u8 __iomem *mmio_base = qs_mmio_base(ap->host);
218
219 qs_enter_reg_mode(ap);
220 writeb(1, mmio_base + QS_HCT_CTRL); /* enable host interrupts */
221 }
222
223 static int qs_prereset(struct ata_link *link, unsigned long deadline)
224 {
225 struct ata_port *ap = link->ap;
226
227 qs_reset_channel_logic(ap);
228 return ata_sff_prereset(link, deadline);
229 }
230
231 static int qs_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
232 {
233 if (sc_reg > SCR_CONTROL)
234 return -EINVAL;
235 *val = readl(link->ap->ioaddr.scr_addr + (sc_reg * 8));
236 return 0;
237 }
238
239 static void qs_error_handler(struct ata_port *ap)
240 {
241 qs_enter_reg_mode(ap);
242 ata_sff_error_handler(ap);
243 }
244
245 static int qs_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
246 {
247 if (sc_reg > SCR_CONTROL)
248 return -EINVAL;
249 writel(val, link->ap->ioaddr.scr_addr + (sc_reg * 8));
250 return 0;
251 }
252
253 static unsigned int qs_fill_sg(struct ata_queued_cmd *qc)
254 {
255 struct scatterlist *sg;
256 struct ata_port *ap = qc->ap;
257 struct qs_port_priv *pp = ap->private_data;
258 u8 *prd = pp->pkt + QS_CPB_BYTES;
259 unsigned int si;
260
261 for_each_sg(qc->sg, sg, qc->n_elem, si) {
262 u64 addr;
263 u32 len;
264
265 addr = sg_dma_address(sg);
266 *(__le64 *)prd = cpu_to_le64(addr);
267 prd += sizeof(u64);
268
269 len = sg_dma_len(sg);
270 *(__le32 *)prd = cpu_to_le32(len);
271 prd += sizeof(u64);
272
273 VPRINTK("PRD[%u] = (0x%llX, 0x%X)\n", si,
274 (unsigned long long)addr, len);
275 }
276
277 return si;
278 }
279
280 static void qs_qc_prep(struct ata_queued_cmd *qc)
281 {
282 struct qs_port_priv *pp = qc->ap->private_data;
283 u8 dflags = QS_DF_PORD, *buf = pp->pkt;
284 u8 hflags = QS_HF_DAT | QS_HF_IEN | QS_HF_VLD;
285 u64 addr;
286 unsigned int nelem;
287
288 VPRINTK("ENTER\n");
289
290 qs_enter_reg_mode(qc->ap);
291 if (qc->tf.protocol != ATA_PROT_DMA)
292 return;
293
294 nelem = qs_fill_sg(qc);
295
296 if ((qc->tf.flags & ATA_TFLAG_WRITE))
297 hflags |= QS_HF_DIRO;
298 if ((qc->tf.flags & ATA_TFLAG_LBA48))
299 dflags |= QS_DF_ELBA;
300
301 /* host control block (HCB) */
302 buf[ 0] = QS_HCB_HDR;
303 buf[ 1] = hflags;
304 *(__le32 *)(&buf[ 4]) = cpu_to_le32(qc->nbytes);
305 *(__le32 *)(&buf[ 8]) = cpu_to_le32(nelem);
306 addr = ((u64)pp->pkt_dma) + QS_CPB_BYTES;
307 *(__le64 *)(&buf[16]) = cpu_to_le64(addr);
308
309 /* device control block (DCB) */
310 buf[24] = QS_DCB_HDR;
311 buf[28] = dflags;
312
313 /* frame information structure (FIS) */
314 ata_tf_to_fis(&qc->tf, 0, 1, &buf[32]);
315 }
316
317 static inline void qs_packet_start(struct ata_queued_cmd *qc)
318 {
319 struct ata_port *ap = qc->ap;
320 u8 __iomem *chan = qs_mmio_base(ap->host) + (ap->port_no * 0x4000);
321
322 VPRINTK("ENTER, ap %p\n", ap);
323
324 writeb(QS_CTR0_CLER, chan + QS_CCT_CTR0);
325 wmb(); /* flush PRDs and pkt to memory */
326 writel(QS_CCF_RUN_PKT, chan + QS_CCT_CFF);
327 readl(chan + QS_CCT_CFF); /* flush */
328 }
329
330 static unsigned int qs_qc_issue(struct ata_queued_cmd *qc)
331 {
332 struct qs_port_priv *pp = qc->ap->private_data;
333
334 switch (qc->tf.protocol) {
335 case ATA_PROT_DMA:
336 pp->state = qs_state_pkt;
337 qs_packet_start(qc);
338 return 0;
339
340 case ATAPI_PROT_DMA:
341 BUG();
342 break;
343
344 default:
345 break;
346 }
347
348 pp->state = qs_state_mmio;
349 return ata_sff_qc_issue(qc);
350 }
351
352 static void qs_do_or_die(struct ata_queued_cmd *qc, u8 status)
353 {
354 qc->err_mask |= ac_err_mask(status);
355
356 if (!qc->err_mask) {
357 ata_qc_complete(qc);
358 } else {
359 struct ata_port *ap = qc->ap;
360 struct ata_eh_info *ehi = &ap->link.eh_info;
361
362 ata_ehi_clear_desc(ehi);
363 ata_ehi_push_desc(ehi, "status 0x%02X", status);
364
365 if (qc->err_mask == AC_ERR_DEV)
366 ata_port_abort(ap);
367 else
368 ata_port_freeze(ap);
369 }
370 }
371
372 static inline unsigned int qs_intr_pkt(struct ata_host *host)
373 {
374 unsigned int handled = 0;
375 u8 sFFE;
376 u8 __iomem *mmio_base = qs_mmio_base(host);
377
378 do {
379 u32 sff0 = readl(mmio_base + QS_HST_SFF);
380 u32 sff1 = readl(mmio_base + QS_HST_SFF + 4);
381 u8 sEVLD = (sff1 >> 30) & 0x01; /* valid flag */
382 sFFE = sff1 >> 31; /* empty flag */
383
384 if (sEVLD) {
385 u8 sDST = sff0 >> 16; /* dev status */
386 u8 sHST = sff1 & 0x3f; /* host status */
387 unsigned int port_no = (sff1 >> 8) & 0x03;
388 struct ata_port *ap = host->ports[port_no];
389 struct qs_port_priv *pp = ap->private_data;
390 struct ata_queued_cmd *qc;
391
392 DPRINTK("SFF=%08x%08x: sCHAN=%u sHST=%d sDST=%02x\n",
393 sff1, sff0, port_no, sHST, sDST);
394 handled = 1;
395 if (!pp || pp->state != qs_state_pkt)
396 continue;
397 qc = ata_qc_from_tag(ap, ap->link.active_tag);
398 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) {
399 switch (sHST) {
400 case 0: /* successful CPB */
401 case 3: /* device error */
402 qs_enter_reg_mode(qc->ap);
403 qs_do_or_die(qc, sDST);
404 break;
405 default:
406 break;
407 }
408 }
409 }
410 } while (!sFFE);
411 return handled;
412 }
413
414 static inline unsigned int qs_intr_mmio(struct ata_host *host)
415 {
416 unsigned int handled = 0, port_no;
417
418 for (port_no = 0; port_no < host->n_ports; ++port_no) {
419 struct ata_port *ap = host->ports[port_no];
420 struct qs_port_priv *pp = ap->private_data;
421 struct ata_queued_cmd *qc;
422
423 qc = ata_qc_from_tag(ap, ap->link.active_tag);
424 if (!qc) {
425 /*
426 * The qstor hardware generates spurious
427 * interrupts from time to time when switching
428 * in and out of packet mode. There's no
429 * obvious way to know if we're here now due
430 * to that, so just ack the irq and pretend we
431 * knew it was ours.. (ugh). This does not
432 * affect packet mode.
433 */
434 ata_sff_check_status(ap);
435 handled = 1;
436 continue;
437 }
438
439 if (!pp || pp->state != qs_state_mmio)
440 continue;
441 if (!(qc->tf.flags & ATA_TFLAG_POLLING))
442 handled |= ata_sff_port_intr(ap, qc);
443 }
444 return handled;
445 }
446
447 static irqreturn_t qs_intr(int irq, void *dev_instance)
448 {
449 struct ata_host *host = dev_instance;
450 unsigned int handled = 0;
451 unsigned long flags;
452
453 VPRINTK("ENTER\n");
454
455 spin_lock_irqsave(&host->lock, flags);
456 handled = qs_intr_pkt(host) | qs_intr_mmio(host);
457 spin_unlock_irqrestore(&host->lock, flags);
458
459 VPRINTK("EXIT\n");
460
461 return IRQ_RETVAL(handled);
462 }
463
464 static void qs_ata_setup_port(struct ata_ioports *port, void __iomem *base)
465 {
466 port->cmd_addr =
467 port->data_addr = base + 0x400;
468 port->error_addr =
469 port->feature_addr = base + 0x408; /* hob_feature = 0x409 */
470 port->nsect_addr = base + 0x410; /* hob_nsect = 0x411 */
471 port->lbal_addr = base + 0x418; /* hob_lbal = 0x419 */
472 port->lbam_addr = base + 0x420; /* hob_lbam = 0x421 */
473 port->lbah_addr = base + 0x428; /* hob_lbah = 0x429 */
474 port->device_addr = base + 0x430;
475 port->status_addr =
476 port->command_addr = base + 0x438;
477 port->altstatus_addr =
478 port->ctl_addr = base + 0x440;
479 port->scr_addr = base + 0xc00;
480 }
481
482 static int qs_port_start(struct ata_port *ap)
483 {
484 struct device *dev = ap->host->dev;
485 struct qs_port_priv *pp;
486 void __iomem *mmio_base = qs_mmio_base(ap->host);
487 void __iomem *chan = mmio_base + (ap->port_no * 0x4000);
488 u64 addr;
489
490 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
491 if (!pp)
492 return -ENOMEM;
493 pp->pkt = dmam_alloc_coherent(dev, QS_PKT_BYTES, &pp->pkt_dma,
494 GFP_KERNEL);
495 if (!pp->pkt)
496 return -ENOMEM;
497 memset(pp->pkt, 0, QS_PKT_BYTES);
498 ap->private_data = pp;
499
500 qs_enter_reg_mode(ap);
501 addr = (u64)pp->pkt_dma;
502 writel((u32) addr, chan + QS_CCF_CPBA);
503 writel((u32)(addr >> 32), chan + QS_CCF_CPBA + 4);
504 return 0;
505 }
506
507 static void qs_host_stop(struct ata_host *host)
508 {
509 void __iomem *mmio_base = qs_mmio_base(host);
510
511 writeb(0, mmio_base + QS_HCT_CTRL); /* disable host interrupts */
512 writeb(QS_CNFG3_GSRST, mmio_base + QS_HCF_CNFG3); /* global reset */
513 }
514
515 static void qs_host_init(struct ata_host *host, unsigned int chip_id)
516 {
517 void __iomem *mmio_base = host->iomap[QS_MMIO_BAR];
518 unsigned int port_no;
519
520 writeb(0, mmio_base + QS_HCT_CTRL); /* disable host interrupts */
521 writeb(QS_CNFG3_GSRST, mmio_base + QS_HCF_CNFG3); /* global reset */
522
523 /* reset each channel in turn */
524 for (port_no = 0; port_no < host->n_ports; ++port_no) {
525 u8 __iomem *chan = mmio_base + (port_no * 0x4000);
526 writeb(QS_CTR1_RDEV|QS_CTR1_RCHN, chan + QS_CCT_CTR1);
527 writeb(QS_CTR0_REG, chan + QS_CCT_CTR0);
528 readb(chan + QS_CCT_CTR0); /* flush */
529 }
530 writeb(QS_SERD3_PHY_ENA, mmio_base + QS_HVS_SERD3); /* enable phy */
531
532 for (port_no = 0; port_no < host->n_ports; ++port_no) {
533 u8 __iomem *chan = mmio_base + (port_no * 0x4000);
534 /* set FIFO depths to same settings as Windows driver */
535 writew(32, chan + QS_CFC_HUFT);
536 writew(32, chan + QS_CFC_HDFT);
537 writew(10, chan + QS_CFC_DUFT);
538 writew( 8, chan + QS_CFC_DDFT);
539 /* set CPB size in bytes, as a power of two */
540 writeb(QS_CPB_ORDER, chan + QS_CCF_CSEP);
541 }
542 writeb(1, mmio_base + QS_HCT_CTRL); /* enable host interrupts */
543 }
544
545 /*
546 * The QStor understands 64-bit buses, and uses 64-bit fields
547 * for DMA pointers regardless of bus width. We just have to
548 * make sure our DMA masks are set appropriately for whatever
549 * bridge lies between us and the QStor, and then the DMA mapping
550 * code will ensure we only ever "see" appropriate buffer addresses.
551 * If we're 32-bit limited somewhere, then our 64-bit fields will
552 * just end up with zeros in the upper 32-bits, without any special
553 * logic required outside of this routine (below).
554 */
555 static int qs_set_dma_masks(struct pci_dev *pdev, void __iomem *mmio_base)
556 {
557 u32 bus_info = readl(mmio_base + QS_HID_HPHY);
558 int rc, have_64bit_bus = (bus_info & QS_HPHY_64BIT);
559
560 if (have_64bit_bus &&
561 !pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
562 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
563 if (rc) {
564 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
565 if (rc) {
566 dev_printk(KERN_ERR, &pdev->dev,
567 "64-bit DMA enable failed\n");
568 return rc;
569 }
570 }
571 } else {
572 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
573 if (rc) {
574 dev_printk(KERN_ERR, &pdev->dev,
575 "32-bit DMA enable failed\n");
576 return rc;
577 }
578 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
579 if (rc) {
580 dev_printk(KERN_ERR, &pdev->dev,
581 "32-bit consistent DMA enable failed\n");
582 return rc;
583 }
584 }
585 return 0;
586 }
587
588 static int qs_ata_init_one(struct pci_dev *pdev,
589 const struct pci_device_id *ent)
590 {
591 static int printed_version;
592 unsigned int board_idx = (unsigned int) ent->driver_data;
593 const struct ata_port_info *ppi[] = { &qs_port_info[board_idx], NULL };
594 struct ata_host *host;
595 int rc, port_no;
596
597 if (!printed_version++)
598 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
599
600 /* alloc host */
601 host = ata_host_alloc_pinfo(&pdev->dev, ppi, QS_PORTS);
602 if (!host)
603 return -ENOMEM;
604
605 /* acquire resources and fill host */
606 rc = pcim_enable_device(pdev);
607 if (rc)
608 return rc;
609
610 if ((pci_resource_flags(pdev, QS_MMIO_BAR) & IORESOURCE_MEM) == 0)
611 return -ENODEV;
612
613 rc = pcim_iomap_regions(pdev, 1 << QS_MMIO_BAR, DRV_NAME);
614 if (rc)
615 return rc;
616 host->iomap = pcim_iomap_table(pdev);
617
618 rc = qs_set_dma_masks(pdev, host->iomap[QS_MMIO_BAR]);
619 if (rc)
620 return rc;
621
622 for (port_no = 0; port_no < host->n_ports; ++port_no) {
623 struct ata_port *ap = host->ports[port_no];
624 unsigned int offset = port_no * 0x4000;
625 void __iomem *chan = host->iomap[QS_MMIO_BAR] + offset;
626
627 qs_ata_setup_port(&ap->ioaddr, chan);
628
629 ata_port_pbar_desc(ap, QS_MMIO_BAR, -1, "mmio");
630 ata_port_pbar_desc(ap, QS_MMIO_BAR, offset, "port");
631 }
632
633 /* initialize adapter */
634 qs_host_init(host, board_idx);
635
636 pci_set_master(pdev);
637 return ata_host_activate(host, pdev->irq, qs_intr, IRQF_SHARED,
638 &qs_ata_sht);
639 }
640
641 static int __init qs_ata_init(void)
642 {
643 return pci_register_driver(&qs_ata_pci_driver);
644 }
645
646 static void __exit qs_ata_exit(void)
647 {
648 pci_unregister_driver(&qs_ata_pci_driver);
649 }
650
651 MODULE_AUTHOR("Mark Lord");
652 MODULE_DESCRIPTION("Pacific Digital Corporation QStor SATA low-level driver");
653 MODULE_LICENSE("GPL");
654 MODULE_DEVICE_TABLE(pci, qs_ata_pci_tbl);
655 MODULE_VERSION(DRV_VERSION);
656
657 module_init(qs_ata_init);
658 module_exit(qs_ata_exit);
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