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[mirror_ubuntu-artful-kernel.git] / drivers / ata / sata_promise.c
1 /*
2 * sata_promise.c - Promise SATA
3 *
4 * Maintained by: Jeff Garzik <jgarzik@pobox.com>
5 * Please ALWAYS copy linux-ide@vger.kernel.org
6 * on emails.
7 *
8 * Copyright 2003-2004 Red Hat, Inc.
9 *
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2, or (at your option)
14 * any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; see the file COPYING. If not, write to
23 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
24 *
25 *
26 * libata documentation is available via 'make {ps|pdf}docs',
27 * as Documentation/DocBook/libata.*
28 *
29 * Hardware information only available under NDA.
30 *
31 */
32
33 #include <linux/kernel.h>
34 #include <linux/module.h>
35 #include <linux/pci.h>
36 #include <linux/init.h>
37 #include <linux/blkdev.h>
38 #include <linux/delay.h>
39 #include <linux/interrupt.h>
40 #include <linux/sched.h>
41 #include <linux/device.h>
42 #include <scsi/scsi_host.h>
43 #include <scsi/scsi_cmnd.h>
44 #include <linux/libata.h>
45 #include <asm/io.h>
46 #include "sata_promise.h"
47
48 #define DRV_NAME "sata_promise"
49 #define DRV_VERSION "1.04"
50
51
52 enum {
53 PDC_PKT_SUBMIT = 0x40, /* Command packet pointer addr */
54 PDC_INT_SEQMASK = 0x40, /* Mask of asserted SEQ INTs */
55 PDC_TBG_MODE = 0x41, /* TBG mode */
56 PDC_FLASH_CTL = 0x44, /* Flash control register */
57 PDC_PCI_CTL = 0x48, /* PCI control and status register */
58 PDC_GLOBAL_CTL = 0x48, /* Global control/status (per port) */
59 PDC_CTLSTAT = 0x60, /* IDE control and status (per port) */
60 PDC_SATA_PLUG_CSR = 0x6C, /* SATA Plug control/status reg */
61 PDC2_SATA_PLUG_CSR = 0x60, /* SATAII Plug control/status reg */
62 PDC_SLEW_CTL = 0x470, /* slew rate control reg */
63
64 PDC_ERR_MASK = (1<<19) | (1<<20) | (1<<21) | (1<<22) |
65 (1<<8) | (1<<9) | (1<<10),
66
67 board_2037x = 0, /* FastTrak S150 TX2plus */
68 board_20319 = 1, /* FastTrak S150 TX4 */
69 board_20619 = 2, /* FastTrak TX4000 */
70 board_20771 = 3, /* FastTrak TX2300 */
71 board_2057x = 4, /* SATAII150 Tx2plus */
72 board_40518 = 5, /* SATAII150 Tx4 */
73
74 PDC_HAS_PATA = (1 << 1), /* PDC20375/20575 has PATA */
75
76 PDC_RESET = (1 << 11), /* HDMA reset */
77
78 PDC_COMMON_FLAGS = ATA_FLAG_NO_LEGACY | ATA_FLAG_SRST |
79 ATA_FLAG_MMIO | ATA_FLAG_NO_ATAPI |
80 ATA_FLAG_PIO_POLLING,
81 };
82
83
84 struct pdc_port_priv {
85 u8 *pkt;
86 dma_addr_t pkt_dma;
87 };
88
89 struct pdc_host_priv {
90 int hotplug_offset;
91 };
92
93 static u32 pdc_sata_scr_read (struct ata_port *ap, unsigned int sc_reg);
94 static void pdc_sata_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
95 static int pdc_ata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
96 static irqreturn_t pdc_interrupt (int irq, void *dev_instance, struct pt_regs *regs);
97 static void pdc_eng_timeout(struct ata_port *ap);
98 static int pdc_port_start(struct ata_port *ap);
99 static void pdc_port_stop(struct ata_port *ap);
100 static void pdc_pata_phy_reset(struct ata_port *ap);
101 static void pdc_sata_phy_reset(struct ata_port *ap);
102 static void pdc_qc_prep(struct ata_queued_cmd *qc);
103 static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
104 static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
105 static void pdc_irq_clear(struct ata_port *ap);
106 static unsigned int pdc_qc_issue_prot(struct ata_queued_cmd *qc);
107 static void pdc_host_stop(struct ata_host *host);
108
109
110 static struct scsi_host_template pdc_ata_sht = {
111 .module = THIS_MODULE,
112 .name = DRV_NAME,
113 .ioctl = ata_scsi_ioctl,
114 .queuecommand = ata_scsi_queuecmd,
115 .can_queue = ATA_DEF_QUEUE,
116 .this_id = ATA_SHT_THIS_ID,
117 .sg_tablesize = LIBATA_MAX_PRD,
118 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
119 .emulated = ATA_SHT_EMULATED,
120 .use_clustering = ATA_SHT_USE_CLUSTERING,
121 .proc_name = DRV_NAME,
122 .dma_boundary = ATA_DMA_BOUNDARY,
123 .slave_configure = ata_scsi_slave_config,
124 .slave_destroy = ata_scsi_slave_destroy,
125 .bios_param = ata_std_bios_param,
126 };
127
128 static const struct ata_port_operations pdc_sata_ops = {
129 .port_disable = ata_port_disable,
130 .tf_load = pdc_tf_load_mmio,
131 .tf_read = ata_tf_read,
132 .check_status = ata_check_status,
133 .exec_command = pdc_exec_command_mmio,
134 .dev_select = ata_std_dev_select,
135
136 .phy_reset = pdc_sata_phy_reset,
137
138 .qc_prep = pdc_qc_prep,
139 .qc_issue = pdc_qc_issue_prot,
140 .eng_timeout = pdc_eng_timeout,
141 .data_xfer = ata_mmio_data_xfer,
142 .irq_handler = pdc_interrupt,
143 .irq_clear = pdc_irq_clear,
144
145 .scr_read = pdc_sata_scr_read,
146 .scr_write = pdc_sata_scr_write,
147 .port_start = pdc_port_start,
148 .port_stop = pdc_port_stop,
149 .host_stop = pdc_host_stop,
150 };
151
152 static const struct ata_port_operations pdc_pata_ops = {
153 .port_disable = ata_port_disable,
154 .tf_load = pdc_tf_load_mmio,
155 .tf_read = ata_tf_read,
156 .check_status = ata_check_status,
157 .exec_command = pdc_exec_command_mmio,
158 .dev_select = ata_std_dev_select,
159
160 .phy_reset = pdc_pata_phy_reset,
161
162 .qc_prep = pdc_qc_prep,
163 .qc_issue = pdc_qc_issue_prot,
164 .data_xfer = ata_mmio_data_xfer,
165 .eng_timeout = pdc_eng_timeout,
166 .irq_handler = pdc_interrupt,
167 .irq_clear = pdc_irq_clear,
168
169 .port_start = pdc_port_start,
170 .port_stop = pdc_port_stop,
171 .host_stop = pdc_host_stop,
172 };
173
174 static const struct ata_port_info pdc_port_info[] = {
175 /* board_2037x */
176 {
177 .sht = &pdc_ata_sht,
178 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA,
179 .pio_mask = 0x1f, /* pio0-4 */
180 .mwdma_mask = 0x07, /* mwdma0-2 */
181 .udma_mask = 0x7f, /* udma0-6 ; FIXME */
182 .port_ops = &pdc_sata_ops,
183 },
184
185 /* board_20319 */
186 {
187 .sht = &pdc_ata_sht,
188 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA,
189 .pio_mask = 0x1f, /* pio0-4 */
190 .mwdma_mask = 0x07, /* mwdma0-2 */
191 .udma_mask = 0x7f, /* udma0-6 ; FIXME */
192 .port_ops = &pdc_sata_ops,
193 },
194
195 /* board_20619 */
196 {
197 .sht = &pdc_ata_sht,
198 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SLAVE_POSS,
199 .pio_mask = 0x1f, /* pio0-4 */
200 .mwdma_mask = 0x07, /* mwdma0-2 */
201 .udma_mask = 0x7f, /* udma0-6 ; FIXME */
202 .port_ops = &pdc_pata_ops,
203 },
204
205 /* board_20771 */
206 {
207 .sht = &pdc_ata_sht,
208 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA,
209 .pio_mask = 0x1f, /* pio0-4 */
210 .mwdma_mask = 0x07, /* mwdma0-2 */
211 .udma_mask = 0x7f, /* udma0-6 ; FIXME */
212 .port_ops = &pdc_sata_ops,
213 },
214
215 /* board_2057x */
216 {
217 .sht = &pdc_ata_sht,
218 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA,
219 .pio_mask = 0x1f, /* pio0-4 */
220 .mwdma_mask = 0x07, /* mwdma0-2 */
221 .udma_mask = 0x7f, /* udma0-6 ; FIXME */
222 .port_ops = &pdc_sata_ops,
223 },
224
225 /* board_40518 */
226 {
227 .sht = &pdc_ata_sht,
228 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA,
229 .pio_mask = 0x1f, /* pio0-4 */
230 .mwdma_mask = 0x07, /* mwdma0-2 */
231 .udma_mask = 0x7f, /* udma0-6 ; FIXME */
232 .port_ops = &pdc_sata_ops,
233 },
234 };
235
236 static const struct pci_device_id pdc_ata_pci_tbl[] = {
237 { PCI_VENDOR_ID_PROMISE, 0x3371, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
238 board_2037x },
239 { PCI_VENDOR_ID_PROMISE, 0x3570, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
240 board_2037x },
241 { PCI_VENDOR_ID_PROMISE, 0x3571, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
242 board_2037x },
243 { PCI_VENDOR_ID_PROMISE, 0x3373, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
244 board_2037x },
245 { PCI_VENDOR_ID_PROMISE, 0x3375, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
246 board_2037x },
247 { PCI_VENDOR_ID_PROMISE, 0x3376, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
248 board_2037x },
249 { PCI_VENDOR_ID_PROMISE, 0x3574, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
250 board_2057x },
251 { PCI_VENDOR_ID_PROMISE, 0x3d75, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
252 board_2057x },
253 { PCI_VENDOR_ID_PROMISE, 0x3d73, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
254 board_2037x },
255
256 { PCI_VENDOR_ID_PROMISE, 0x3318, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
257 board_20319 },
258 { PCI_VENDOR_ID_PROMISE, 0x3319, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
259 board_20319 },
260 { PCI_VENDOR_ID_PROMISE, 0x3515, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
261 board_20319 },
262 { PCI_VENDOR_ID_PROMISE, 0x3519, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
263 board_20319 },
264 { PCI_VENDOR_ID_PROMISE, 0x3d17, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
265 board_20319 },
266 { PCI_VENDOR_ID_PROMISE, 0x3d18, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
267 board_40518 },
268
269 { PCI_VENDOR_ID_PROMISE, 0x6629, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
270 board_20619 },
271
272 /* TODO: remove all associated board_20771 code, as it completely
273 * duplicates board_2037x code, unless reason for separation can be
274 * divined.
275 */
276 #if 0
277 { PCI_VENDOR_ID_PROMISE, 0x3570, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
278 board_20771 },
279 #endif
280
281 { } /* terminate list */
282 };
283
284
285 static struct pci_driver pdc_ata_pci_driver = {
286 .name = DRV_NAME,
287 .id_table = pdc_ata_pci_tbl,
288 .probe = pdc_ata_init_one,
289 .remove = ata_pci_remove_one,
290 };
291
292
293 static int pdc_port_start(struct ata_port *ap)
294 {
295 struct device *dev = ap->host->dev;
296 struct pdc_port_priv *pp;
297 int rc;
298
299 rc = ata_port_start(ap);
300 if (rc)
301 return rc;
302
303 pp = kzalloc(sizeof(*pp), GFP_KERNEL);
304 if (!pp) {
305 rc = -ENOMEM;
306 goto err_out;
307 }
308
309 pp->pkt = dma_alloc_coherent(dev, 128, &pp->pkt_dma, GFP_KERNEL);
310 if (!pp->pkt) {
311 rc = -ENOMEM;
312 goto err_out_kfree;
313 }
314
315 ap->private_data = pp;
316
317 return 0;
318
319 err_out_kfree:
320 kfree(pp);
321 err_out:
322 ata_port_stop(ap);
323 return rc;
324 }
325
326
327 static void pdc_port_stop(struct ata_port *ap)
328 {
329 struct device *dev = ap->host->dev;
330 struct pdc_port_priv *pp = ap->private_data;
331
332 ap->private_data = NULL;
333 dma_free_coherent(dev, 128, pp->pkt, pp->pkt_dma);
334 kfree(pp);
335 ata_port_stop(ap);
336 }
337
338
339 static void pdc_host_stop(struct ata_host *host)
340 {
341 struct pdc_host_priv *hp = host->private_data;
342
343 ata_pci_host_stop(host);
344
345 kfree(hp);
346 }
347
348
349 static void pdc_reset_port(struct ata_port *ap)
350 {
351 void __iomem *mmio = (void __iomem *) ap->ioaddr.cmd_addr + PDC_CTLSTAT;
352 unsigned int i;
353 u32 tmp;
354
355 for (i = 11; i > 0; i--) {
356 tmp = readl(mmio);
357 if (tmp & PDC_RESET)
358 break;
359
360 udelay(100);
361
362 tmp |= PDC_RESET;
363 writel(tmp, mmio);
364 }
365
366 tmp &= ~PDC_RESET;
367 writel(tmp, mmio);
368 readl(mmio); /* flush */
369 }
370
371 static void pdc_sata_phy_reset(struct ata_port *ap)
372 {
373 pdc_reset_port(ap);
374 sata_phy_reset(ap);
375 }
376
377 static void pdc_pata_cbl_detect(struct ata_port *ap)
378 {
379 u8 tmp;
380 void __iomem *mmio = (void *) ap->ioaddr.cmd_addr + PDC_CTLSTAT + 0x03;
381
382 tmp = readb(mmio);
383
384 if (tmp & 0x01) {
385 ap->cbl = ATA_CBL_PATA40;
386 ap->udma_mask &= ATA_UDMA_MASK_40C;
387 } else
388 ap->cbl = ATA_CBL_PATA80;
389 }
390
391 static void pdc_pata_phy_reset(struct ata_port *ap)
392 {
393 pdc_pata_cbl_detect(ap);
394 pdc_reset_port(ap);
395 ata_port_probe(ap);
396 ata_bus_reset(ap);
397 }
398
399 static u32 pdc_sata_scr_read (struct ata_port *ap, unsigned int sc_reg)
400 {
401 if (sc_reg > SCR_CONTROL)
402 return 0xffffffffU;
403 return readl((void __iomem *) ap->ioaddr.scr_addr + (sc_reg * 4));
404 }
405
406
407 static void pdc_sata_scr_write (struct ata_port *ap, unsigned int sc_reg,
408 u32 val)
409 {
410 if (sc_reg > SCR_CONTROL)
411 return;
412 writel(val, (void __iomem *) ap->ioaddr.scr_addr + (sc_reg * 4));
413 }
414
415 static void pdc_qc_prep(struct ata_queued_cmd *qc)
416 {
417 struct pdc_port_priv *pp = qc->ap->private_data;
418 unsigned int i;
419
420 VPRINTK("ENTER\n");
421
422 switch (qc->tf.protocol) {
423 case ATA_PROT_DMA:
424 ata_qc_prep(qc);
425 /* fall through */
426
427 case ATA_PROT_NODATA:
428 i = pdc_pkt_header(&qc->tf, qc->ap->prd_dma,
429 qc->dev->devno, pp->pkt);
430
431 if (qc->tf.flags & ATA_TFLAG_LBA48)
432 i = pdc_prep_lba48(&qc->tf, pp->pkt, i);
433 else
434 i = pdc_prep_lba28(&qc->tf, pp->pkt, i);
435
436 pdc_pkt_footer(&qc->tf, pp->pkt, i);
437 break;
438
439 default:
440 break;
441 }
442 }
443
444 static void pdc_eng_timeout(struct ata_port *ap)
445 {
446 struct ata_host *host = ap->host;
447 u8 drv_stat;
448 struct ata_queued_cmd *qc;
449 unsigned long flags;
450
451 DPRINTK("ENTER\n");
452
453 spin_lock_irqsave(&host->lock, flags);
454
455 qc = ata_qc_from_tag(ap, ap->active_tag);
456
457 switch (qc->tf.protocol) {
458 case ATA_PROT_DMA:
459 case ATA_PROT_NODATA:
460 ata_port_printk(ap, KERN_ERR, "command timeout\n");
461 drv_stat = ata_wait_idle(ap);
462 qc->err_mask |= __ac_err_mask(drv_stat);
463 break;
464
465 default:
466 drv_stat = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
467
468 ata_port_printk(ap, KERN_ERR,
469 "unknown timeout, cmd 0x%x stat 0x%x\n",
470 qc->tf.command, drv_stat);
471
472 qc->err_mask |= ac_err_mask(drv_stat);
473 break;
474 }
475
476 spin_unlock_irqrestore(&host->lock, flags);
477 ata_eh_qc_complete(qc);
478 DPRINTK("EXIT\n");
479 }
480
481 static inline unsigned int pdc_host_intr( struct ata_port *ap,
482 struct ata_queued_cmd *qc)
483 {
484 unsigned int handled = 0;
485 u32 tmp;
486 void __iomem *mmio = (void __iomem *) ap->ioaddr.cmd_addr + PDC_GLOBAL_CTL;
487
488 tmp = readl(mmio);
489 if (tmp & PDC_ERR_MASK) {
490 qc->err_mask |= AC_ERR_DEV;
491 pdc_reset_port(ap);
492 }
493
494 switch (qc->tf.protocol) {
495 case ATA_PROT_DMA:
496 case ATA_PROT_NODATA:
497 qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
498 ata_qc_complete(qc);
499 handled = 1;
500 break;
501
502 default:
503 ap->stats.idle_irq++;
504 break;
505 }
506
507 return handled;
508 }
509
510 static void pdc_irq_clear(struct ata_port *ap)
511 {
512 struct ata_host *host = ap->host;
513 void __iomem *mmio = host->mmio_base;
514
515 readl(mmio + PDC_INT_SEQMASK);
516 }
517
518 static irqreturn_t pdc_interrupt (int irq, void *dev_instance, struct pt_regs *regs)
519 {
520 struct ata_host *host = dev_instance;
521 struct ata_port *ap;
522 u32 mask = 0;
523 unsigned int i, tmp;
524 unsigned int handled = 0;
525 void __iomem *mmio_base;
526
527 VPRINTK("ENTER\n");
528
529 if (!host || !host->mmio_base) {
530 VPRINTK("QUICK EXIT\n");
531 return IRQ_NONE;
532 }
533
534 mmio_base = host->mmio_base;
535
536 /* reading should also clear interrupts */
537 mask = readl(mmio_base + PDC_INT_SEQMASK);
538
539 if (mask == 0xffffffff) {
540 VPRINTK("QUICK EXIT 2\n");
541 return IRQ_NONE;
542 }
543
544 spin_lock(&host->lock);
545
546 mask &= 0xffff; /* only 16 tags possible */
547 if (!mask) {
548 VPRINTK("QUICK EXIT 3\n");
549 goto done_irq;
550 }
551
552 writel(mask, mmio_base + PDC_INT_SEQMASK);
553
554 for (i = 0; i < host->n_ports; i++) {
555 VPRINTK("port %u\n", i);
556 ap = host->ports[i];
557 tmp = mask & (1 << (i + 1));
558 if (tmp && ap &&
559 !(ap->flags & ATA_FLAG_DISABLED)) {
560 struct ata_queued_cmd *qc;
561
562 qc = ata_qc_from_tag(ap, ap->active_tag);
563 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
564 handled += pdc_host_intr(ap, qc);
565 }
566 }
567
568 VPRINTK("EXIT\n");
569
570 done_irq:
571 spin_unlock(&host->lock);
572 return IRQ_RETVAL(handled);
573 }
574
575 static inline void pdc_packet_start(struct ata_queued_cmd *qc)
576 {
577 struct ata_port *ap = qc->ap;
578 struct pdc_port_priv *pp = ap->private_data;
579 unsigned int port_no = ap->port_no;
580 u8 seq = (u8) (port_no + 1);
581
582 VPRINTK("ENTER, ap %p\n", ap);
583
584 writel(0x00000001, ap->host->mmio_base + (seq * 4));
585 readl(ap->host->mmio_base + (seq * 4)); /* flush */
586
587 pp->pkt[2] = seq;
588 wmb(); /* flush PRD, pkt writes */
589 writel(pp->pkt_dma, (void __iomem *) ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
590 readl((void __iomem *) ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT); /* flush */
591 }
592
593 static unsigned int pdc_qc_issue_prot(struct ata_queued_cmd *qc)
594 {
595 switch (qc->tf.protocol) {
596 case ATA_PROT_DMA:
597 case ATA_PROT_NODATA:
598 pdc_packet_start(qc);
599 return 0;
600
601 case ATA_PROT_ATAPI_DMA:
602 BUG();
603 break;
604
605 default:
606 break;
607 }
608
609 return ata_qc_issue_prot(qc);
610 }
611
612 static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
613 {
614 WARN_ON (tf->protocol == ATA_PROT_DMA ||
615 tf->protocol == ATA_PROT_NODATA);
616 ata_tf_load(ap, tf);
617 }
618
619
620 static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
621 {
622 WARN_ON (tf->protocol == ATA_PROT_DMA ||
623 tf->protocol == ATA_PROT_NODATA);
624 ata_exec_command(ap, tf);
625 }
626
627
628 static void pdc_ata_setup_port(struct ata_ioports *port, unsigned long base)
629 {
630 port->cmd_addr = base;
631 port->data_addr = base;
632 port->feature_addr =
633 port->error_addr = base + 0x4;
634 port->nsect_addr = base + 0x8;
635 port->lbal_addr = base + 0xc;
636 port->lbam_addr = base + 0x10;
637 port->lbah_addr = base + 0x14;
638 port->device_addr = base + 0x18;
639 port->command_addr =
640 port->status_addr = base + 0x1c;
641 port->altstatus_addr =
642 port->ctl_addr = base + 0x38;
643 }
644
645
646 static void pdc_host_init(unsigned int chip_id, struct ata_probe_ent *pe)
647 {
648 void __iomem *mmio = pe->mmio_base;
649 struct pdc_host_priv *hp = pe->private_data;
650 int hotplug_offset = hp->hotplug_offset;
651 u32 tmp;
652
653 /*
654 * Except for the hotplug stuff, this is voodoo from the
655 * Promise driver. Label this entire section
656 * "TODO: figure out why we do this"
657 */
658
659 /* change FIFO_SHD to 8 dwords, enable BMR_BURST */
660 tmp = readl(mmio + PDC_FLASH_CTL);
661 tmp |= 0x12000; /* bit 16 (fifo 8 dw) and 13 (bmr burst?) */
662 writel(tmp, mmio + PDC_FLASH_CTL);
663
664 /* clear plug/unplug flags for all ports */
665 tmp = readl(mmio + hotplug_offset);
666 writel(tmp | 0xff, mmio + hotplug_offset);
667
668 /* mask plug/unplug ints */
669 tmp = readl(mmio + hotplug_offset);
670 writel(tmp | 0xff0000, mmio + hotplug_offset);
671
672 /* reduce TBG clock to 133 Mhz. */
673 tmp = readl(mmio + PDC_TBG_MODE);
674 tmp &= ~0x30000; /* clear bit 17, 16*/
675 tmp |= 0x10000; /* set bit 17:16 = 0:1 */
676 writel(tmp, mmio + PDC_TBG_MODE);
677
678 readl(mmio + PDC_TBG_MODE); /* flush */
679 msleep(10);
680
681 /* adjust slew rate control register. */
682 tmp = readl(mmio + PDC_SLEW_CTL);
683 tmp &= 0xFFFFF03F; /* clear bit 11 ~ 6 */
684 tmp |= 0x00000900; /* set bit 11-9 = 100b , bit 8-6 = 100 */
685 writel(tmp, mmio + PDC_SLEW_CTL);
686 }
687
688 static int pdc_ata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
689 {
690 static int printed_version;
691 struct ata_probe_ent *probe_ent = NULL;
692 struct pdc_host_priv *hp;
693 unsigned long base;
694 void __iomem *mmio_base;
695 unsigned int board_idx = (unsigned int) ent->driver_data;
696 int pci_dev_busy = 0;
697 int rc;
698
699 if (!printed_version++)
700 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
701
702 rc = pci_enable_device(pdev);
703 if (rc)
704 return rc;
705
706 rc = pci_request_regions(pdev, DRV_NAME);
707 if (rc) {
708 pci_dev_busy = 1;
709 goto err_out;
710 }
711
712 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
713 if (rc)
714 goto err_out_regions;
715 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
716 if (rc)
717 goto err_out_regions;
718
719 probe_ent = kzalloc(sizeof(*probe_ent), GFP_KERNEL);
720 if (probe_ent == NULL) {
721 rc = -ENOMEM;
722 goto err_out_regions;
723 }
724
725 probe_ent->dev = pci_dev_to_dev(pdev);
726 INIT_LIST_HEAD(&probe_ent->node);
727
728 mmio_base = pci_iomap(pdev, 3, 0);
729 if (mmio_base == NULL) {
730 rc = -ENOMEM;
731 goto err_out_free_ent;
732 }
733 base = (unsigned long) mmio_base;
734
735 hp = kzalloc(sizeof(*hp), GFP_KERNEL);
736 if (hp == NULL) {
737 rc = -ENOMEM;
738 goto err_out_free_ent;
739 }
740
741 /* Set default hotplug offset */
742 hp->hotplug_offset = PDC_SATA_PLUG_CSR;
743 probe_ent->private_data = hp;
744
745 probe_ent->sht = pdc_port_info[board_idx].sht;
746 probe_ent->port_flags = pdc_port_info[board_idx].flags;
747 probe_ent->pio_mask = pdc_port_info[board_idx].pio_mask;
748 probe_ent->mwdma_mask = pdc_port_info[board_idx].mwdma_mask;
749 probe_ent->udma_mask = pdc_port_info[board_idx].udma_mask;
750 probe_ent->port_ops = pdc_port_info[board_idx].port_ops;
751
752 probe_ent->irq = pdev->irq;
753 probe_ent->irq_flags = IRQF_SHARED;
754 probe_ent->mmio_base = mmio_base;
755
756 pdc_ata_setup_port(&probe_ent->port[0], base + 0x200);
757 pdc_ata_setup_port(&probe_ent->port[1], base + 0x280);
758
759 probe_ent->port[0].scr_addr = base + 0x400;
760 probe_ent->port[1].scr_addr = base + 0x500;
761
762 /* notice 4-port boards */
763 switch (board_idx) {
764 case board_40518:
765 /* Override hotplug offset for SATAII150 */
766 hp->hotplug_offset = PDC2_SATA_PLUG_CSR;
767 /* Fall through */
768 case board_20319:
769 probe_ent->n_ports = 4;
770
771 pdc_ata_setup_port(&probe_ent->port[2], base + 0x300);
772 pdc_ata_setup_port(&probe_ent->port[3], base + 0x380);
773
774 probe_ent->port[2].scr_addr = base + 0x600;
775 probe_ent->port[3].scr_addr = base + 0x700;
776 break;
777 case board_2057x:
778 /* Override hotplug offset for SATAII150 */
779 hp->hotplug_offset = PDC2_SATA_PLUG_CSR;
780 /* Fall through */
781 case board_2037x:
782 probe_ent->n_ports = 2;
783 break;
784 case board_20771:
785 probe_ent->n_ports = 2;
786 break;
787 case board_20619:
788 probe_ent->n_ports = 4;
789
790 pdc_ata_setup_port(&probe_ent->port[2], base + 0x300);
791 pdc_ata_setup_port(&probe_ent->port[3], base + 0x380);
792
793 probe_ent->port[2].scr_addr = base + 0x600;
794 probe_ent->port[3].scr_addr = base + 0x700;
795 break;
796 default:
797 BUG();
798 break;
799 }
800
801 pci_set_master(pdev);
802
803 /* initialize adapter */
804 pdc_host_init(board_idx, probe_ent);
805
806 /* FIXME: Need any other frees than hp? */
807 if (!ata_device_add(probe_ent))
808 kfree(hp);
809
810 kfree(probe_ent);
811
812 return 0;
813
814 err_out_free_ent:
815 kfree(probe_ent);
816 err_out_regions:
817 pci_release_regions(pdev);
818 err_out:
819 if (!pci_dev_busy)
820 pci_disable_device(pdev);
821 return rc;
822 }
823
824
825 static int __init pdc_ata_init(void)
826 {
827 return pci_register_driver(&pdc_ata_pci_driver);
828 }
829
830
831 static void __exit pdc_ata_exit(void)
832 {
833 pci_unregister_driver(&pdc_ata_pci_driver);
834 }
835
836
837 MODULE_AUTHOR("Jeff Garzik");
838 MODULE_DESCRIPTION("Promise ATA TX2/TX4/TX4000 low-level driver");
839 MODULE_LICENSE("GPL");
840 MODULE_DEVICE_TABLE(pci, pdc_ata_pci_tbl);
841 MODULE_VERSION(DRV_VERSION);
842
843 module_init(pdc_ata_init);
844 module_exit(pdc_ata_exit);
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