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PM: OMAP3: Removed a couple of unused variables from DVFS code
[linux-ginger.git] / drivers / ata / sata_qstor.c
blob326c0cfc29b34c366c146ea0c2a6c128d5f7f2f4
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/pci.h>
33 #include <linux/init.h>
34 #include <linux/blkdev.h>
35 #include <linux/delay.h>
36 #include <linux/interrupt.h>
37 #include <linux/device.h>
38 #include <scsi/scsi_host.h>
39 #include <linux/libata.h>
40
41 #define DRV_NAME "sata_qstor"
42 #define DRV_VERSION "0.09"
43
44 enum {
45 QS_MMIO_BAR = 4,
46
47 QS_PORTS = 4,
48 QS_MAX_PRD = LIBATA_MAX_PRD,
49 QS_CPB_ORDER = 6,
50 QS_CPB_BYTES = (1 << QS_CPB_ORDER),
51 QS_PRD_BYTES = QS_MAX_PRD * 16,
52 QS_PKT_BYTES = QS_CPB_BYTES + QS_PRD_BYTES,
53
54 /* global register offsets */
55 QS_HCF_CNFG3 = 0x0003, /* host configuration offset */
56 QS_HID_HPHY = 0x0004, /* host physical interface info */
57 QS_HCT_CTRL = 0x00e4, /* global interrupt mask offset */
58 QS_HST_SFF = 0x0100, /* host status fifo offset */
59 QS_HVS_SERD3 = 0x0393, /* PHY enable offset */
60
61 /* global control bits */
62 QS_HPHY_64BIT = (1 << 1), /* 64-bit bus detected */
63 QS_CNFG3_GSRST = 0x01, /* global chip reset */
64 QS_SERD3_PHY_ENA = 0xf0, /* PHY detection ENAble*/
65
66 /* per-channel register offsets */
67 QS_CCF_CPBA = 0x0710, /* chan CPB base address */
68 QS_CCF_CSEP = 0x0718, /* chan CPB separation factor */
69 QS_CFC_HUFT = 0x0800, /* host upstream fifo threshold */
70 QS_CFC_HDFT = 0x0804, /* host downstream fifo threshold */
71 QS_CFC_DUFT = 0x0808, /* dev upstream fifo threshold */
72 QS_CFC_DDFT = 0x080c, /* dev downstream fifo threshold */
73 QS_CCT_CTR0 = 0x0900, /* chan control-0 offset */
74 QS_CCT_CTR1 = 0x0901, /* chan control-1 offset */
75 QS_CCT_CFF = 0x0a00, /* chan command fifo offset */
76
77 /* channel control bits */
78 QS_CTR0_REG = (1 << 1), /* register mode (vs. pkt mode) */
79 QS_CTR0_CLER = (1 << 2), /* clear channel errors */
80 QS_CTR1_RDEV = (1 << 1), /* sata phy/comms reset */
81 QS_CTR1_RCHN = (1 << 4), /* reset channel logic */
82 QS_CCF_RUN_PKT = 0x107, /* RUN a new dma PKT */
83
84 /* pkt sub-field headers */
85 QS_HCB_HDR = 0x01, /* Host Control Block header */
86 QS_DCB_HDR = 0x02, /* Device Control Block header */
87
88 /* pkt HCB flag bits */
89 QS_HF_DIRO = (1 << 0), /* data DIRection Out */
90 QS_HF_DAT = (1 << 3), /* DATa pkt */
91 QS_HF_IEN = (1 << 4), /* Interrupt ENable */
92 QS_HF_VLD = (1 << 5), /* VaLiD pkt */
93
94 /* pkt DCB flag bits */
95 QS_DF_PORD = (1 << 2), /* Pio OR Dma */
96 QS_DF_ELBA = (1 << 3), /* Extended LBA (lba48) */
97
98 /* PCI device IDs */
99 board_2068_idx = 0, /* QStor 4-port SATA/RAID */
100 };
101
102 enum {
103 QS_DMA_BOUNDARY = ~0UL
104 };
105
106 typedef enum { qs_state_mmio, qs_state_pkt } qs_state_t;
107
108 struct qs_port_priv {
109 u8 *pkt;
110 dma_addr_t pkt_dma;
111 qs_state_t state;
112 };
113
114 static int qs_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
115 static int qs_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
116 static int qs_ata_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
117 static int qs_port_start(struct ata_port *ap);
118 static void qs_host_stop(struct ata_host *host);
119 static void qs_qc_prep(struct ata_queued_cmd *qc);
120 static unsigned int qs_qc_issue(struct ata_queued_cmd *qc);
121 static int qs_check_atapi_dma(struct ata_queued_cmd *qc);
122 static void qs_bmdma_stop(struct ata_queued_cmd *qc);
123 static u8 qs_bmdma_status(struct ata_port *ap);
124 static void qs_freeze(struct ata_port *ap);
125 static void qs_thaw(struct ata_port *ap);
126 static int qs_prereset(struct ata_link *link, unsigned long deadline);
127 static void qs_error_handler(struct ata_port *ap);
128
129 static struct scsi_host_template qs_ata_sht = {
130 ATA_BASE_SHT(DRV_NAME),
131 .sg_tablesize = QS_MAX_PRD,
132 .dma_boundary = QS_DMA_BOUNDARY,
133 };
134
135 static struct ata_port_operations qs_ata_ops = {
136 .inherits = &ata_sff_port_ops,
137
138 .check_atapi_dma = qs_check_atapi_dma,
139 .bmdma_stop = qs_bmdma_stop,
140 .bmdma_status = qs_bmdma_status,
141 .qc_prep = qs_qc_prep,
142 .qc_issue = qs_qc_issue,
143
144 .freeze = qs_freeze,
145 .thaw = qs_thaw,
146 .prereset = qs_prereset,
147 .softreset = ATA_OP_NULL,
148 .error_handler = qs_error_handler,
149 .post_internal_cmd = ATA_OP_NULL,
150 .lost_interrupt = ATA_OP_NULL,
151
152 .scr_read = qs_scr_read,
153 .scr_write = qs_scr_write,
154
155 .port_start = qs_port_start,
156 .host_stop = qs_host_stop,
157 };
158
159 static const struct ata_port_info qs_port_info[] = {
160 /* board_2068_idx */
161 {
162 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
163 ATA_FLAG_MMIO | ATA_FLAG_PIO_POLLING,
164 .pio_mask = ATA_PIO4_ONLY,
165 .udma_mask = ATA_UDMA6,
166 .port_ops = &qs_ata_ops,
167 },
168 };
169
170 static const struct pci_device_id qs_ata_pci_tbl[] = {
171 { PCI_VDEVICE(PDC, 0x2068), board_2068_idx },
172
173 { } /* terminate list */
174 };
175
176 static struct pci_driver qs_ata_pci_driver = {
177 .name = DRV_NAME,
178 .id_table = qs_ata_pci_tbl,
179 .probe = qs_ata_init_one,
180 .remove = ata_pci_remove_one,
181 };
182
183 static void __iomem *qs_mmio_base(struct ata_host *host)
184 {
185 return host->iomap[QS_MMIO_BAR];
186 }
187
188 static int qs_check_atapi_dma(struct ata_queued_cmd *qc)
189 {
190 return 1; /* ATAPI DMA not supported */
191 }
192
193 static void qs_bmdma_stop(struct ata_queued_cmd *qc)
194 {
195 /* nothing */
196 }
197
198 static u8 qs_bmdma_status(struct ata_port *ap)
199 {
200 return 0;
201 }
202
203 static inline void qs_enter_reg_mode(struct ata_port *ap)
204 {
205 u8 __iomem *chan = qs_mmio_base(ap->host) + (ap->port_no * 0x4000);
206 struct qs_port_priv *pp = ap->private_data;
207
208 pp->state = qs_state_mmio;
209 writeb(QS_CTR0_REG, chan + QS_CCT_CTR0);
210 readb(chan + QS_CCT_CTR0); /* flush */
211 }
212
213 static inline void qs_reset_channel_logic(struct ata_port *ap)
214 {
215 u8 __iomem *chan = qs_mmio_base(ap->host) + (ap->port_no * 0x4000);
216
217 writeb(QS_CTR1_RCHN, chan + QS_CCT_CTR1);
218 readb(chan + QS_CCT_CTR0); /* flush */
219 qs_enter_reg_mode(ap);
220 }
221
222 static void qs_freeze(struct ata_port *ap)
223 {
224 u8 __iomem *mmio_base = qs_mmio_base(ap->host);
225
226 writeb(0, mmio_base + QS_HCT_CTRL); /* disable host interrupts */
227 qs_enter_reg_mode(ap);
228 }
229
230 static void qs_thaw(struct ata_port *ap)
231 {
232 u8 __iomem *mmio_base = qs_mmio_base(ap->host);
233
234 qs_enter_reg_mode(ap);
235 writeb(1, mmio_base + QS_HCT_CTRL); /* enable host interrupts */
236 }
237
238 static int qs_prereset(struct ata_link *link, unsigned long deadline)
239 {
240 struct ata_port *ap = link->ap;
241
242 qs_reset_channel_logic(ap);
243 return ata_sff_prereset(link, deadline);
244 }
245
246 static int qs_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
247 {
248 if (sc_reg > SCR_CONTROL)
249 return -EINVAL;
250 *val = readl(link->ap->ioaddr.scr_addr + (sc_reg * 8));
251 return 0;
252 }
253
254 static void qs_error_handler(struct ata_port *ap)
255 {
256 qs_enter_reg_mode(ap);
257 ata_std_error_handler(ap);
258 }
259
260 static int qs_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
261 {
262 if (sc_reg > SCR_CONTROL)
263 return -EINVAL;
264 writel(val, link->ap->ioaddr.scr_addr + (sc_reg * 8));
265 return 0;
266 }
267
268 static unsigned int qs_fill_sg(struct ata_queued_cmd *qc)
269 {
270 struct scatterlist *sg;
271 struct ata_port *ap = qc->ap;
272 struct qs_port_priv *pp = ap->private_data;
273 u8 *prd = pp->pkt + QS_CPB_BYTES;
274 unsigned int si;
275
276 for_each_sg(qc->sg, sg, qc->n_elem, si) {
277 u64 addr;
278 u32 len;
279
280 addr = sg_dma_address(sg);
281 *(__le64 *)prd = cpu_to_le64(addr);
282 prd += sizeof(u64);
283
284 len = sg_dma_len(sg);
285 *(__le32 *)prd = cpu_to_le32(len);
286 prd += sizeof(u64);
287
288 VPRINTK("PRD[%u] = (0x%llX, 0x%X)\n", si,
289 (unsigned long long)addr, len);
290 }
291
292 return si;
293 }
294
295 static void qs_qc_prep(struct ata_queued_cmd *qc)
296 {
297 struct qs_port_priv *pp = qc->ap->private_data;
298 u8 dflags = QS_DF_PORD, *buf = pp->pkt;
299 u8 hflags = QS_HF_DAT | QS_HF_IEN | QS_HF_VLD;
300 u64 addr;
301 unsigned int nelem;
302
303 VPRINTK("ENTER\n");
304
305 qs_enter_reg_mode(qc->ap);
306 if (qc->tf.protocol != ATA_PROT_DMA) {
307 ata_sff_qc_prep(qc);
308 return;
309 }
310
311 nelem = qs_fill_sg(qc);
312
313 if ((qc->tf.flags & ATA_TFLAG_WRITE))
314 hflags |= QS_HF_DIRO;
315 if ((qc->tf.flags & ATA_TFLAG_LBA48))
316 dflags |= QS_DF_ELBA;
317
318 /* host control block (HCB) */
319 buf[ 0] = QS_HCB_HDR;
320 buf[ 1] = hflags;
321 *(__le32 *)(&buf[ 4]) = cpu_to_le32(qc->nbytes);
322 *(__le32 *)(&buf[ 8]) = cpu_to_le32(nelem);
323 addr = ((u64)pp->pkt_dma) + QS_CPB_BYTES;
324 *(__le64 *)(&buf[16]) = cpu_to_le64(addr);
325
326 /* device control block (DCB) */
327 buf[24] = QS_DCB_HDR;
328 buf[28] = dflags;
329
330 /* frame information structure (FIS) */
331 ata_tf_to_fis(&qc->tf, 0, 1, &buf[32]);
332 }
333
334 static inline void qs_packet_start(struct ata_queued_cmd *qc)
335 {
336 struct ata_port *ap = qc->ap;
337 u8 __iomem *chan = qs_mmio_base(ap->host) + (ap->port_no * 0x4000);
338
339 VPRINTK("ENTER, ap %p\n", ap);
340
341 writeb(QS_CTR0_CLER, chan + QS_CCT_CTR0);
342 wmb(); /* flush PRDs and pkt to memory */
343 writel(QS_CCF_RUN_PKT, chan + QS_CCT_CFF);
344 readl(chan + QS_CCT_CFF); /* flush */
345 }
346
347 static unsigned int qs_qc_issue(struct ata_queued_cmd *qc)
348 {
349 struct qs_port_priv *pp = qc->ap->private_data;
350
351 switch (qc->tf.protocol) {
352 case ATA_PROT_DMA:
353 pp->state = qs_state_pkt;
354 qs_packet_start(qc);
355 return 0;
356
357 case ATAPI_PROT_DMA:
358 BUG();
359 break;
360
361 default:
362 break;
363 }
364
365 pp->state = qs_state_mmio;
366 return ata_sff_qc_issue(qc);
367 }
368
369 static void qs_do_or_die(struct ata_queued_cmd *qc, u8 status)
370 {
371 qc->err_mask |= ac_err_mask(status);
372
373 if (!qc->err_mask) {
374 ata_qc_complete(qc);
375 } else {
376 struct ata_port *ap = qc->ap;
377 struct ata_eh_info *ehi = &ap->link.eh_info;
378
379 ata_ehi_clear_desc(ehi);
380 ata_ehi_push_desc(ehi, "status 0x%02X", status);
381
382 if (qc->err_mask == AC_ERR_DEV)
383 ata_port_abort(ap);
384 else
385 ata_port_freeze(ap);
386 }
387 }
388
389 static inline unsigned int qs_intr_pkt(struct ata_host *host)
390 {
391 unsigned int handled = 0;
392 u8 sFFE;
393 u8 __iomem *mmio_base = qs_mmio_base(host);
394
395 do {
396 u32 sff0 = readl(mmio_base + QS_HST_SFF);
397 u32 sff1 = readl(mmio_base + QS_HST_SFF + 4);
398 u8 sEVLD = (sff1 >> 30) & 0x01; /* valid flag */
399 sFFE = sff1 >> 31; /* empty flag */
400
401 if (sEVLD) {
402 u8 sDST = sff0 >> 16; /* dev status */
403 u8 sHST = sff1 & 0x3f; /* host status */
404 unsigned int port_no = (sff1 >> 8) & 0x03;
405 struct ata_port *ap = host->ports[port_no];
406
407 DPRINTK("SFF=%08x%08x: sCHAN=%u sHST=%d sDST=%02x\n",
408 sff1, sff0, port_no, sHST, sDST);
409 handled = 1;
410 if (ap && !(ap->flags & ATA_FLAG_DISABLED)) {
411 struct ata_queued_cmd *qc;
412 struct qs_port_priv *pp = ap->private_data;
413 if (!pp || pp->state != qs_state_pkt)
414 continue;
415 qc = ata_qc_from_tag(ap, ap->link.active_tag);
416 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) {
417 switch (sHST) {
418 case 0: /* successful CPB */
419 case 3: /* device error */
420 qs_enter_reg_mode(qc->ap);
421 qs_do_or_die(qc, sDST);
422 break;
423 default:
424 break;
425 }
426 }
427 }
428 }
429 } while (!sFFE);
430 return handled;
431 }
432
433 static inline unsigned int qs_intr_mmio(struct ata_host *host)
434 {
435 unsigned int handled = 0, port_no;
436
437 for (port_no = 0; port_no < host->n_ports; ++port_no) {
438 struct ata_port *ap;
439 ap = host->ports[port_no];
440 if (ap &&
441 !(ap->flags & ATA_FLAG_DISABLED)) {
442 struct ata_queued_cmd *qc;
443 struct qs_port_priv *pp;
444 qc = ata_qc_from_tag(ap, ap->link.active_tag);
445 if (!qc || !(qc->flags & ATA_QCFLAG_ACTIVE)) {
446 /*
447 * The qstor hardware generates spurious
448 * interrupts from time to time when switching
449 * in and out of packet mode.
450 * There's no obvious way to know if we're
451 * here now due to that, so just ack the irq
452 * and pretend we knew it was ours.. (ugh).
453 * This does not affect packet mode.
454 */
455 ata_sff_check_status(ap);
456 handled = 1;
457 continue;
458 }
459 pp = ap->private_data;
460 if (!pp || pp->state != qs_state_mmio)
461 continue;
462 if (!(qc->tf.flags & ATA_TFLAG_POLLING))
463 handled |= ata_sff_host_intr(ap, qc);
464 }
465 }
466 return handled;
467 }
468
469 static irqreturn_t qs_intr(int irq, void *dev_instance)
470 {
471 struct ata_host *host = dev_instance;
472 unsigned int handled = 0;
473 unsigned long flags;
474
475 VPRINTK("ENTER\n");
476
477 spin_lock_irqsave(&host->lock, flags);
478 handled = qs_intr_pkt(host) | qs_intr_mmio(host);
479 spin_unlock_irqrestore(&host->lock, flags);
480
481 VPRINTK("EXIT\n");
482
483 return IRQ_RETVAL(handled);
484 }
485
486 static void qs_ata_setup_port(struct ata_ioports *port, void __iomem *base)
487 {
488 port->cmd_addr =
489 port->data_addr = base + 0x400;
490 port->error_addr =
491 port->feature_addr = base + 0x408; /* hob_feature = 0x409 */
492 port->nsect_addr = base + 0x410; /* hob_nsect = 0x411 */
493 port->lbal_addr = base + 0x418; /* hob_lbal = 0x419 */
494 port->lbam_addr = base + 0x420; /* hob_lbam = 0x421 */
495 port->lbah_addr = base + 0x428; /* hob_lbah = 0x429 */
496 port->device_addr = base + 0x430;
497 port->status_addr =
498 port->command_addr = base + 0x438;
499 port->altstatus_addr =
500 port->ctl_addr = base + 0x440;
501 port->scr_addr = base + 0xc00;
502 }
503
504 static int qs_port_start(struct ata_port *ap)
505 {
506 struct device *dev = ap->host->dev;
507 struct qs_port_priv *pp;
508 void __iomem *mmio_base = qs_mmio_base(ap->host);
509 void __iomem *chan = mmio_base + (ap->port_no * 0x4000);
510 u64 addr;
511 int rc;
512
513 rc = ata_port_start(ap);
514 if (rc)
515 return rc;
516 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
517 if (!pp)
518 return -ENOMEM;
519 pp->pkt = dmam_alloc_coherent(dev, QS_PKT_BYTES, &pp->pkt_dma,
520 GFP_KERNEL);
521 if (!pp->pkt)
522 return -ENOMEM;
523 memset(pp->pkt, 0, QS_PKT_BYTES);
524 ap->private_data = pp;
525
526 qs_enter_reg_mode(ap);
527 addr = (u64)pp->pkt_dma;
528 writel((u32) addr, chan + QS_CCF_CPBA);
529 writel((u32)(addr >> 32), chan + QS_CCF_CPBA + 4);
530 return 0;
531 }
532
533 static void qs_host_stop(struct ata_host *host)
534 {
535 void __iomem *mmio_base = qs_mmio_base(host);
536
537 writeb(0, mmio_base + QS_HCT_CTRL); /* disable host interrupts */
538 writeb(QS_CNFG3_GSRST, mmio_base + QS_HCF_CNFG3); /* global reset */
539 }
540
541 static void qs_host_init(struct ata_host *host, unsigned int chip_id)
542 {
543 void __iomem *mmio_base = host->iomap[QS_MMIO_BAR];
544 unsigned int port_no;
545
546 writeb(0, mmio_base + QS_HCT_CTRL); /* disable host interrupts */
547 writeb(QS_CNFG3_GSRST, mmio_base + QS_HCF_CNFG3); /* global reset */
548
549 /* reset each channel in turn */
550 for (port_no = 0; port_no < host->n_ports; ++port_no) {
551 u8 __iomem *chan = mmio_base + (port_no * 0x4000);
552 writeb(QS_CTR1_RDEV|QS_CTR1_RCHN, chan + QS_CCT_CTR1);
553 writeb(QS_CTR0_REG, chan + QS_CCT_CTR0);
554 readb(chan + QS_CCT_CTR0); /* flush */
555 }
556 writeb(QS_SERD3_PHY_ENA, mmio_base + QS_HVS_SERD3); /* enable phy */
557
558 for (port_no = 0; port_no < host->n_ports; ++port_no) {
559 u8 __iomem *chan = mmio_base + (port_no * 0x4000);
560 /* set FIFO depths to same settings as Windows driver */
561 writew(32, chan + QS_CFC_HUFT);
562 writew(32, chan + QS_CFC_HDFT);
563 writew(10, chan + QS_CFC_DUFT);
564 writew( 8, chan + QS_CFC_DDFT);
565 /* set CPB size in bytes, as a power of two */
566 writeb(QS_CPB_ORDER, chan + QS_CCF_CSEP);
567 }
568 writeb(1, mmio_base + QS_HCT_CTRL); /* enable host interrupts */
569 }
570
571 /*
572 * The QStor understands 64-bit buses, and uses 64-bit fields
573 * for DMA pointers regardless of bus width. We just have to
574 * make sure our DMA masks are set appropriately for whatever
575 * bridge lies between us and the QStor, and then the DMA mapping
576 * code will ensure we only ever "see" appropriate buffer addresses.
577 * If we're 32-bit limited somewhere, then our 64-bit fields will
578 * just end up with zeros in the upper 32-bits, without any special
579 * logic required outside of this routine (below).
580 */
581 static int qs_set_dma_masks(struct pci_dev *pdev, void __iomem *mmio_base)
582 {
583 u32 bus_info = readl(mmio_base + QS_HID_HPHY);
584 int rc, have_64bit_bus = (bus_info & QS_HPHY_64BIT);
585
586 if (have_64bit_bus &&
587 !pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
588 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
589 if (rc) {
590 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
591 if (rc) {
592 dev_printk(KERN_ERR, &pdev->dev,
593 "64-bit DMA enable failed\n");
594 return rc;
595 }
596 }
597 } else {
598 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
599 if (rc) {
600 dev_printk(KERN_ERR, &pdev->dev,
601 "32-bit DMA enable failed\n");
602 return rc;
603 }
604 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
605 if (rc) {
606 dev_printk(KERN_ERR, &pdev->dev,
607 "32-bit consistent DMA enable failed\n");
608 return rc;
609 }
610 }
611 return 0;
612 }
613
614 static int qs_ata_init_one(struct pci_dev *pdev,
615 const struct pci_device_id *ent)
616 {
617 static int printed_version;
618 unsigned int board_idx = (unsigned int) ent->driver_data;
619 const struct ata_port_info *ppi[] = { &qs_port_info[board_idx], NULL };
620 struct ata_host *host;
621 int rc, port_no;
622
623 if (!printed_version++)
624 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
625
626 /* alloc host */
627 host = ata_host_alloc_pinfo(&pdev->dev, ppi, QS_PORTS);
628 if (!host)
629 return -ENOMEM;
630
631 /* acquire resources and fill host */
632 rc = pcim_enable_device(pdev);
633 if (rc)
634 return rc;
635
636 if ((pci_resource_flags(pdev, QS_MMIO_BAR) & IORESOURCE_MEM) == 0)
637 return -ENODEV;
638
639 rc = pcim_iomap_regions(pdev, 1 << QS_MMIO_BAR, DRV_NAME);
640 if (rc)
641 return rc;
642 host->iomap = pcim_iomap_table(pdev);
643
644 rc = qs_set_dma_masks(pdev, host->iomap[QS_MMIO_BAR]);
645 if (rc)
646 return rc;
647
648 for (port_no = 0; port_no < host->n_ports; ++port_no) {
649 struct ata_port *ap = host->ports[port_no];
650 unsigned int offset = port_no * 0x4000;
651 void __iomem *chan = host->iomap[QS_MMIO_BAR] + offset;
652
653 qs_ata_setup_port(&ap->ioaddr, chan);
654
655 ata_port_pbar_desc(ap, QS_MMIO_BAR, -1, "mmio");
656 ata_port_pbar_desc(ap, QS_MMIO_BAR, offset, "port");
657 }
658
659 /* initialize adapter */
660 qs_host_init(host, board_idx);
661
662 pci_set_master(pdev);
663 return ata_host_activate(host, pdev->irq, qs_intr, IRQF_SHARED,
664 &qs_ata_sht);
665 }
666
667 static int __init qs_ata_init(void)
668 {
669 return pci_register_driver(&qs_ata_pci_driver);
670 }
671
672 static void __exit qs_ata_exit(void)
673 {
674 pci_unregister_driver(&qs_ata_pci_driver);
675 }
676
677 MODULE_AUTHOR("Mark Lord");
678 MODULE_DESCRIPTION("Pacific Digital Corporation QStor SATA low-level driver");
679 MODULE_LICENSE("GPL");
680 MODULE_DEVICE_TABLE(pci, qs_ata_pci_tbl);
681 MODULE_VERSION(DRV_VERSION);
682
683 module_init(qs_ata_init);
684 module_exit(qs_ata_exit);
Linux for Ginger Game Console