?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
[PATCH] Clean up the old digi support and rescue it
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / sata_promise.c
blob538ad727bd2eb897c32cad017dcad8e11701d6bf
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 "scsi.h"
42 #include <scsi/scsi_host.h>
43 #include <linux/libata.h>
44 #include <asm/io.h>
45 #include "sata_promise.h"
46
47 #define DRV_NAME "sata_promise"
48 #define DRV_VERSION "1.02"
49
50
51 enum {
52 PDC_PKT_SUBMIT = 0x40, /* Command packet pointer addr */
53 PDC_INT_SEQMASK = 0x40, /* Mask of asserted SEQ INTs */
54 PDC_TBG_MODE = 0x41, /* TBG mode */
55 PDC_FLASH_CTL = 0x44, /* Flash control register */
56 PDC_PCI_CTL = 0x48, /* PCI control and status register */
57 PDC_GLOBAL_CTL = 0x48, /* Global control/status (per port) */
58 PDC_CTLSTAT = 0x60, /* IDE control and status (per port) */
59 PDC_SATA_PLUG_CSR = 0x6C, /* SATA Plug control/status reg */
60 PDC_SLEW_CTL = 0x470, /* slew rate control reg */
61
62 PDC_ERR_MASK = (1<<19) | (1<<20) | (1<<21) | (1<<22) |
63 (1<<8) | (1<<9) | (1<<10),
64
65 board_2037x = 0, /* FastTrak S150 TX2plus */
66 board_20319 = 1, /* FastTrak S150 TX4 */
67 board_20619 = 2, /* FastTrak TX4000 */
68
69 PDC_HAS_PATA = (1 << 1), /* PDC20375 has PATA */
70
71 PDC_RESET = (1 << 11), /* HDMA reset */
72 };
73
74
75 struct pdc_port_priv {
76 u8 *pkt;
77 dma_addr_t pkt_dma;
78 };
79
80 static u32 pdc_sata_scr_read (struct ata_port *ap, unsigned int sc_reg);
81 static void pdc_sata_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
82 static int pdc_ata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
83 static irqreturn_t pdc_interrupt (int irq, void *dev_instance, struct pt_regs *regs);
84 static void pdc_eng_timeout(struct ata_port *ap);
85 static int pdc_port_start(struct ata_port *ap);
86 static void pdc_port_stop(struct ata_port *ap);
87 static void pdc_pata_phy_reset(struct ata_port *ap);
88 static void pdc_sata_phy_reset(struct ata_port *ap);
89 static void pdc_qc_prep(struct ata_queued_cmd *qc);
90 static void pdc_tf_load_mmio(struct ata_port *ap, struct ata_taskfile *tf);
91 static void pdc_exec_command_mmio(struct ata_port *ap, struct ata_taskfile *tf);
92 static void pdc_irq_clear(struct ata_port *ap);
93 static int pdc_qc_issue_prot(struct ata_queued_cmd *qc);
94
95
96 static Scsi_Host_Template pdc_ata_sht = {
97 .module = THIS_MODULE,
98 .name = DRV_NAME,
99 .ioctl = ata_scsi_ioctl,
100 .queuecommand = ata_scsi_queuecmd,
101 .eh_strategy_handler = ata_scsi_error,
102 .can_queue = ATA_DEF_QUEUE,
103 .this_id = ATA_SHT_THIS_ID,
104 .sg_tablesize = LIBATA_MAX_PRD,
105 .max_sectors = ATA_MAX_SECTORS,
106 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
107 .emulated = ATA_SHT_EMULATED,
108 .use_clustering = ATA_SHT_USE_CLUSTERING,
109 .proc_name = DRV_NAME,
110 .dma_boundary = ATA_DMA_BOUNDARY,
111 .slave_configure = ata_scsi_slave_config,
112 .bios_param = ata_std_bios_param,
113 .ordered_flush = 1,
114 };
115
116 static struct ata_port_operations pdc_sata_ops = {
117 .port_disable = ata_port_disable,
118 .tf_load = pdc_tf_load_mmio,
119 .tf_read = ata_tf_read,
120 .check_status = ata_check_status,
121 .exec_command = pdc_exec_command_mmio,
122 .dev_select = ata_std_dev_select,
123
124 .phy_reset = pdc_sata_phy_reset,
125
126 .qc_prep = pdc_qc_prep,
127 .qc_issue = pdc_qc_issue_prot,
128 .eng_timeout = pdc_eng_timeout,
129 .irq_handler = pdc_interrupt,
130 .irq_clear = pdc_irq_clear,
131
132 .scr_read = pdc_sata_scr_read,
133 .scr_write = pdc_sata_scr_write,
134 .port_start = pdc_port_start,
135 .port_stop = pdc_port_stop,
136 .host_stop = ata_pci_host_stop,
137 };
138
139 static struct ata_port_operations pdc_pata_ops = {
140 .port_disable = ata_port_disable,
141 .tf_load = pdc_tf_load_mmio,
142 .tf_read = ata_tf_read,
143 .check_status = ata_check_status,
144 .exec_command = pdc_exec_command_mmio,
145 .dev_select = ata_std_dev_select,
146
147 .phy_reset = pdc_pata_phy_reset,
148
149 .qc_prep = pdc_qc_prep,
150 .qc_issue = pdc_qc_issue_prot,
151 .eng_timeout = pdc_eng_timeout,
152 .irq_handler = pdc_interrupt,
153 .irq_clear = pdc_irq_clear,
154
155 .port_start = pdc_port_start,
156 .port_stop = pdc_port_stop,
157 .host_stop = ata_pci_host_stop,
158 };
159
160 static struct ata_port_info pdc_port_info[] = {
161 /* board_2037x */
162 {
163 .sht = &pdc_ata_sht,
164 .host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
165 ATA_FLAG_SRST | ATA_FLAG_MMIO,
166 .pio_mask = 0x1f, /* pio0-4 */
167 .mwdma_mask = 0x07, /* mwdma0-2 */
168 .udma_mask = 0x7f, /* udma0-6 ; FIXME */
169 .port_ops = &pdc_sata_ops,
170 },
171
172 /* board_20319 */
173 {
174 .sht = &pdc_ata_sht,
175 .host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
176 ATA_FLAG_SRST | ATA_FLAG_MMIO,
177 .pio_mask = 0x1f, /* pio0-4 */
178 .mwdma_mask = 0x07, /* mwdma0-2 */
179 .udma_mask = 0x7f, /* udma0-6 ; FIXME */
180 .port_ops = &pdc_sata_ops,
181 },
182
183 /* board_20619 */
184 {
185 .sht = &pdc_ata_sht,
186 .host_flags = ATA_FLAG_NO_LEGACY | ATA_FLAG_SRST |
187 ATA_FLAG_MMIO | ATA_FLAG_SLAVE_POSS,
188 .pio_mask = 0x1f, /* pio0-4 */
189 .mwdma_mask = 0x07, /* mwdma0-2 */
190 .udma_mask = 0x7f, /* udma0-6 ; FIXME */
191 .port_ops = &pdc_pata_ops,
192 },
193 };
194
195 static struct pci_device_id pdc_ata_pci_tbl[] = {
196 { PCI_VENDOR_ID_PROMISE, 0x3371, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
197 board_2037x },
198 { PCI_VENDOR_ID_PROMISE, 0x3571, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
199 board_2037x },
200 { PCI_VENDOR_ID_PROMISE, 0x3373, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
201 board_2037x },
202 { PCI_VENDOR_ID_PROMISE, 0x3375, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
203 board_2037x },
204 { PCI_VENDOR_ID_PROMISE, 0x3376, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
205 board_2037x },
206 { PCI_VENDOR_ID_PROMISE, 0x3574, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
207 board_2037x },
208 { PCI_VENDOR_ID_PROMISE, 0x3d75, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
209 board_2037x },
210
211 { PCI_VENDOR_ID_PROMISE, 0x3318, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
212 board_20319 },
213 { PCI_VENDOR_ID_PROMISE, 0x3319, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
214 board_20319 },
215 { PCI_VENDOR_ID_PROMISE, 0x3519, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
216 board_20319 },
217 { PCI_VENDOR_ID_PROMISE, 0x3d17, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
218 board_20319 },
219 { PCI_VENDOR_ID_PROMISE, 0x3d18, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
220 board_20319 },
221
222 { PCI_VENDOR_ID_PROMISE, 0x6629, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
223 board_20619 },
224
225 { } /* terminate list */
226 };
227
228
229 static struct pci_driver pdc_ata_pci_driver = {
230 .name = DRV_NAME,
231 .id_table = pdc_ata_pci_tbl,
232 .probe = pdc_ata_init_one,
233 .remove = ata_pci_remove_one,
234 };
235
236
237 static int pdc_port_start(struct ata_port *ap)
238 {
239 struct device *dev = ap->host_set->dev;
240 struct pdc_port_priv *pp;
241 int rc;
242
243 rc = ata_port_start(ap);
244 if (rc)
245 return rc;
246
247 pp = kmalloc(sizeof(*pp), GFP_KERNEL);
248 if (!pp) {
249 rc = -ENOMEM;
250 goto err_out;
251 }
252 memset(pp, 0, sizeof(*pp));
253
254 pp->pkt = dma_alloc_coherent(dev, 128, &pp->pkt_dma, GFP_KERNEL);
255 if (!pp->pkt) {
256 rc = -ENOMEM;
257 goto err_out_kfree;
258 }
259
260 ap->private_data = pp;
261
262 return 0;
263
264 err_out_kfree:
265 kfree(pp);
266 err_out:
267 ata_port_stop(ap);
268 return rc;
269 }
270
271
272 static void pdc_port_stop(struct ata_port *ap)
273 {
274 struct device *dev = ap->host_set->dev;
275 struct pdc_port_priv *pp = ap->private_data;
276
277 ap->private_data = NULL;
278 dma_free_coherent(dev, 128, pp->pkt, pp->pkt_dma);
279 kfree(pp);
280 ata_port_stop(ap);
281 }
282
283
284 static void pdc_reset_port(struct ata_port *ap)
285 {
286 void __iomem *mmio = (void __iomem *) ap->ioaddr.cmd_addr + PDC_CTLSTAT;
287 unsigned int i;
288 u32 tmp;
289
290 for (i = 11; i > 0; i--) {
291 tmp = readl(mmio);
292 if (tmp & PDC_RESET)
293 break;
294
295 udelay(100);
296
297 tmp |= PDC_RESET;
298 writel(tmp, mmio);
299 }
300
301 tmp &= ~PDC_RESET;
302 writel(tmp, mmio);
303 readl(mmio); /* flush */
304 }
305
306 static void pdc_sata_phy_reset(struct ata_port *ap)
307 {
308 pdc_reset_port(ap);
309 sata_phy_reset(ap);
310 }
311
312 static void pdc_pata_phy_reset(struct ata_port *ap)
313 {
314 /* FIXME: add cable detect. Don't assume 40-pin cable */
315 ap->cbl = ATA_CBL_PATA40;
316 ap->udma_mask &= ATA_UDMA_MASK_40C;
317
318 pdc_reset_port(ap);
319 ata_port_probe(ap);
320 ata_bus_reset(ap);
321 }
322
323 static u32 pdc_sata_scr_read (struct ata_port *ap, unsigned int sc_reg)
324 {
325 if (sc_reg > SCR_CONTROL)
326 return 0xffffffffU;
327 return readl((void *) ap->ioaddr.scr_addr + (sc_reg * 4));
328 }
329
330
331 static void pdc_sata_scr_write (struct ata_port *ap, unsigned int sc_reg,
332 u32 val)
333 {
334 if (sc_reg > SCR_CONTROL)
335 return;
336 writel(val, (void *) ap->ioaddr.scr_addr + (sc_reg * 4));
337 }
338
339 static void pdc_qc_prep(struct ata_queued_cmd *qc)
340 {
341 struct pdc_port_priv *pp = qc->ap->private_data;
342 unsigned int i;
343
344 VPRINTK("ENTER\n");
345
346 switch (qc->tf.protocol) {
347 case ATA_PROT_DMA:
348 ata_qc_prep(qc);
349 /* fall through */
350
351 case ATA_PROT_NODATA:
352 i = pdc_pkt_header(&qc->tf, qc->ap->prd_dma,
353 qc->dev->devno, pp->pkt);
354
355 if (qc->tf.flags & ATA_TFLAG_LBA48)
356 i = pdc_prep_lba48(&qc->tf, pp->pkt, i);
357 else
358 i = pdc_prep_lba28(&qc->tf, pp->pkt, i);
359
360 pdc_pkt_footer(&qc->tf, pp->pkt, i);
361 break;
362
363 default:
364 break;
365 }
366 }
367
368 static void pdc_eng_timeout(struct ata_port *ap)
369 {
370 struct ata_host_set *host_set = ap->host_set;
371 u8 drv_stat;
372 struct ata_queued_cmd *qc;
373 unsigned long flags;
374
375 DPRINTK("ENTER\n");
376
377 spin_lock_irqsave(&host_set->lock, flags);
378
379 qc = ata_qc_from_tag(ap, ap->active_tag);
380 if (!qc) {
381 printk(KERN_ERR "ata%u: BUG: timeout without command\n",
382 ap->id);
383 goto out;
384 }
385
386 /* hack alert! We cannot use the supplied completion
387 * function from inside the ->eh_strategy_handler() thread.
388 * libata is the only user of ->eh_strategy_handler() in
389 * any kernel, so the default scsi_done() assumes it is
390 * not being called from the SCSI EH.
391 */
392 qc->scsidone = scsi_finish_command;
393
394 switch (qc->tf.protocol) {
395 case ATA_PROT_DMA:
396 case ATA_PROT_NODATA:
397 printk(KERN_ERR "ata%u: command timeout\n", ap->id);
398 ata_qc_complete(qc, ata_wait_idle(ap) | ATA_ERR);
399 break;
400
401 default:
402 drv_stat = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
403
404 printk(KERN_ERR "ata%u: unknown timeout, cmd 0x%x stat 0x%x\n",
405 ap->id, qc->tf.command, drv_stat);
406
407 ata_qc_complete(qc, drv_stat);
408 break;
409 }
410
411 out:
412 spin_unlock_irqrestore(&host_set->lock, flags);
413 DPRINTK("EXIT\n");
414 }
415
416 static inline unsigned int pdc_host_intr( struct ata_port *ap,
417 struct ata_queued_cmd *qc)
418 {
419 u8 status;
420 unsigned int handled = 0, have_err = 0;
421 u32 tmp;
422 void __iomem *mmio = (void __iomem *) ap->ioaddr.cmd_addr + PDC_GLOBAL_CTL;
423
424 tmp = readl(mmio);
425 if (tmp & PDC_ERR_MASK) {
426 have_err = 1;
427 pdc_reset_port(ap);
428 }
429
430 switch (qc->tf.protocol) {
431 case ATA_PROT_DMA:
432 case ATA_PROT_NODATA:
433 status = ata_wait_idle(ap);
434 if (have_err)
435 status |= ATA_ERR;
436 ata_qc_complete(qc, status);
437 handled = 1;
438 break;
439
440 default:
441 ap->stats.idle_irq++;
442 break;
443 }
444
445 return handled;
446 }
447
448 static void pdc_irq_clear(struct ata_port *ap)
449 {
450 struct ata_host_set *host_set = ap->host_set;
451 void __iomem *mmio = host_set->mmio_base;
452
453 readl(mmio + PDC_INT_SEQMASK);
454 }
455
456 static irqreturn_t pdc_interrupt (int irq, void *dev_instance, struct pt_regs *regs)
457 {
458 struct ata_host_set *host_set = dev_instance;
459 struct ata_port *ap;
460 u32 mask = 0;
461 unsigned int i, tmp;
462 unsigned int handled = 0;
463 void __iomem *mmio_base;
464
465 VPRINTK("ENTER\n");
466
467 if (!host_set || !host_set->mmio_base) {
468 VPRINTK("QUICK EXIT\n");
469 return IRQ_NONE;
470 }
471
472 mmio_base = host_set->mmio_base;
473
474 /* reading should also clear interrupts */
475 mask = readl(mmio_base + PDC_INT_SEQMASK);
476
477 if (mask == 0xffffffff) {
478 VPRINTK("QUICK EXIT 2\n");
479 return IRQ_NONE;
480 }
481 mask &= 0xffff; /* only 16 tags possible */
482 if (!mask) {
483 VPRINTK("QUICK EXIT 3\n");
484 return IRQ_NONE;
485 }
486
487 spin_lock(&host_set->lock);
488
489 writel(mask, mmio_base + PDC_INT_SEQMASK);
490
491 for (i = 0; i < host_set->n_ports; i++) {
492 VPRINTK("port %u\n", i);
493 ap = host_set->ports[i];
494 tmp = mask & (1 << (i + 1));
495 if (tmp && ap &&
496 !(ap->flags & (ATA_FLAG_PORT_DISABLED | ATA_FLAG_NOINTR))) {
497 struct ata_queued_cmd *qc;
498
499 qc = ata_qc_from_tag(ap, ap->active_tag);
500 if (qc && (!(qc->tf.ctl & ATA_NIEN)))
501 handled += pdc_host_intr(ap, qc);
502 }
503 }
504
505 spin_unlock(&host_set->lock);
506
507 VPRINTK("EXIT\n");
508
509 return IRQ_RETVAL(handled);
510 }
511
512 static inline void pdc_packet_start(struct ata_queued_cmd *qc)
513 {
514 struct ata_port *ap = qc->ap;
515 struct pdc_port_priv *pp = ap->private_data;
516 unsigned int port_no = ap->port_no;
517 u8 seq = (u8) (port_no + 1);
518
519 VPRINTK("ENTER, ap %p\n", ap);
520
521 writel(0x00000001, ap->host_set->mmio_base + (seq * 4));
522 readl(ap->host_set->mmio_base + (seq * 4)); /* flush */
523
524 pp->pkt[2] = seq;
525 wmb(); /* flush PRD, pkt writes */
526 writel(pp->pkt_dma, (void *) ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
527 readl((void *) ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT); /* flush */
528 }
529
530 static int pdc_qc_issue_prot(struct ata_queued_cmd *qc)
531 {
532 switch (qc->tf.protocol) {
533 case ATA_PROT_DMA:
534 case ATA_PROT_NODATA:
535 pdc_packet_start(qc);
536 return 0;
537
538 case ATA_PROT_ATAPI_DMA:
539 BUG();
540 break;
541
542 default:
543 break;
544 }
545
546 return ata_qc_issue_prot(qc);
547 }
548
549 static void pdc_tf_load_mmio(struct ata_port *ap, struct ata_taskfile *tf)
550 {
551 WARN_ON (tf->protocol == ATA_PROT_DMA ||
552 tf->protocol == ATA_PROT_NODATA);
553 ata_tf_load(ap, tf);
554 }
555
556
557 static void pdc_exec_command_mmio(struct ata_port *ap, struct ata_taskfile *tf)
558 {
559 WARN_ON (tf->protocol == ATA_PROT_DMA ||
560 tf->protocol == ATA_PROT_NODATA);
561 ata_exec_command(ap, tf);
562 }
563
564
565 static void pdc_ata_setup_port(struct ata_ioports *port, unsigned long base)
566 {
567 port->cmd_addr = base;
568 port->data_addr = base;
569 port->feature_addr =
570 port->error_addr = base + 0x4;
571 port->nsect_addr = base + 0x8;
572 port->lbal_addr = base + 0xc;
573 port->lbam_addr = base + 0x10;
574 port->lbah_addr = base + 0x14;
575 port->device_addr = base + 0x18;
576 port->command_addr =
577 port->status_addr = base + 0x1c;
578 port->altstatus_addr =
579 port->ctl_addr = base + 0x38;
580 }
581
582
583 static void pdc_host_init(unsigned int chip_id, struct ata_probe_ent *pe)
584 {
585 void __iomem *mmio = pe->mmio_base;
586 u32 tmp;
587
588 /*
589 * Except for the hotplug stuff, this is voodoo from the
590 * Promise driver. Label this entire section
591 * "TODO: figure out why we do this"
592 */
593
594 /* change FIFO_SHD to 8 dwords, enable BMR_BURST */
595 tmp = readl(mmio + PDC_FLASH_CTL);
596 tmp |= 0x12000; /* bit 16 (fifo 8 dw) and 13 (bmr burst?) */
597 writel(tmp, mmio + PDC_FLASH_CTL);
598
599 /* clear plug/unplug flags for all ports */
600 tmp = readl(mmio + PDC_SATA_PLUG_CSR);
601 writel(tmp | 0xff, mmio + PDC_SATA_PLUG_CSR);
602
603 /* mask plug/unplug ints */
604 tmp = readl(mmio + PDC_SATA_PLUG_CSR);
605 writel(tmp | 0xff0000, mmio + PDC_SATA_PLUG_CSR);
606
607 /* reduce TBG clock to 133 Mhz. */
608 tmp = readl(mmio + PDC_TBG_MODE);
609 tmp &= ~0x30000; /* clear bit 17, 16*/
610 tmp |= 0x10000; /* set bit 17:16 = 0:1 */
611 writel(tmp, mmio + PDC_TBG_MODE);
612
613 readl(mmio + PDC_TBG_MODE); /* flush */
614 msleep(10);
615
616 /* adjust slew rate control register. */
617 tmp = readl(mmio + PDC_SLEW_CTL);
618 tmp &= 0xFFFFF03F; /* clear bit 11 ~ 6 */
619 tmp |= 0x00000900; /* set bit 11-9 = 100b , bit 8-6 = 100 */
620 writel(tmp, mmio + PDC_SLEW_CTL);
621 }
622
623 static int pdc_ata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
624 {
625 static int printed_version;
626 struct ata_probe_ent *probe_ent = NULL;
627 unsigned long base;
628 void __iomem *mmio_base;
629 unsigned int board_idx = (unsigned int) ent->driver_data;
630 int pci_dev_busy = 0;
631 int rc;
632
633 if (!printed_version++)
634 printk(KERN_DEBUG DRV_NAME " version " DRV_VERSION "\n");
635
636 /*
637 * If this driver happens to only be useful on Apple's K2, then
638 * we should check that here as it has a normal Serverworks ID
639 */
640 rc = pci_enable_device(pdev);
641 if (rc)
642 return rc;
643
644 rc = pci_request_regions(pdev, DRV_NAME);
645 if (rc) {
646 pci_dev_busy = 1;
647 goto err_out;
648 }
649
650 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
651 if (rc)
652 goto err_out_regions;
653 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
654 if (rc)
655 goto err_out_regions;
656
657 probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
658 if (probe_ent == NULL) {
659 rc = -ENOMEM;
660 goto err_out_regions;
661 }
662
663 memset(probe_ent, 0, sizeof(*probe_ent));
664 probe_ent->dev = pci_dev_to_dev(pdev);
665 INIT_LIST_HEAD(&probe_ent->node);
666
667 mmio_base = pci_iomap(pdev, 3, 0);
668 if (mmio_base == NULL) {
669 rc = -ENOMEM;
670 goto err_out_free_ent;
671 }
672 base = (unsigned long) mmio_base;
673
674 probe_ent->sht = pdc_port_info[board_idx].sht;
675 probe_ent->host_flags = pdc_port_info[board_idx].host_flags;
676 probe_ent->pio_mask = pdc_port_info[board_idx].pio_mask;
677 probe_ent->mwdma_mask = pdc_port_info[board_idx].mwdma_mask;
678 probe_ent->udma_mask = pdc_port_info[board_idx].udma_mask;
679 probe_ent->port_ops = pdc_port_info[board_idx].port_ops;
680
681 probe_ent->irq = pdev->irq;
682 probe_ent->irq_flags = SA_SHIRQ;
683 probe_ent->mmio_base = mmio_base;
684
685 pdc_ata_setup_port(&probe_ent->port[0], base + 0x200);
686 pdc_ata_setup_port(&probe_ent->port[1], base + 0x280);
687
688 probe_ent->port[0].scr_addr = base + 0x400;
689 probe_ent->port[1].scr_addr = base + 0x500;
690
691 /* notice 4-port boards */
692 switch (board_idx) {
693 case board_20319:
694 probe_ent->n_ports = 4;
695
696 pdc_ata_setup_port(&probe_ent->port[2], base + 0x300);
697 pdc_ata_setup_port(&probe_ent->port[3], base + 0x380);
698
699 probe_ent->port[2].scr_addr = base + 0x600;
700 probe_ent->port[3].scr_addr = base + 0x700;
701 break;
702 case board_2037x:
703 probe_ent->n_ports = 2;
704 break;
705 case board_20619:
706 probe_ent->n_ports = 4;
707
708 pdc_ata_setup_port(&probe_ent->port[2], base + 0x300);
709 pdc_ata_setup_port(&probe_ent->port[3], base + 0x380);
710
711 probe_ent->port[2].scr_addr = base + 0x600;
712 probe_ent->port[3].scr_addr = base + 0x700;
713 break;
714 default:
715 BUG();
716 break;
717 }
718
719 pci_set_master(pdev);
720
721 /* initialize adapter */
722 pdc_host_init(board_idx, probe_ent);
723
724 /* FIXME: check ata_device_add return value */
725 ata_device_add(probe_ent);
726 kfree(probe_ent);
727
728 return 0;
729
730 err_out_free_ent:
731 kfree(probe_ent);
732 err_out_regions:
733 pci_release_regions(pdev);
734 err_out:
735 if (!pci_dev_busy)
736 pci_disable_device(pdev);
737 return rc;
738 }
739
740
741 static int __init pdc_ata_init(void)
742 {
743 return pci_module_init(&pdc_ata_pci_driver);
744 }
745
746
747 static void __exit pdc_ata_exit(void)
748 {
749 pci_unregister_driver(&pdc_ata_pci_driver);
750 }
751
752
753 MODULE_AUTHOR("Jeff Garzik");
754 MODULE_DESCRIPTION("Promise ATA TX2/TX4/TX4000 low-level driver");
755 MODULE_LICENSE("GPL");
756 MODULE_DEVICE_TABLE(pci, pdc_ata_pci_tbl);
757 MODULE_VERSION(DRV_VERSION);
758
759 module_init(pdc_ata_init);
760 module_exit(pdc_ata_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree