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-rw-r--r--drivers/scsi/Makefile2
-rw-r--r--drivers/scsi/libata-bmdma.c703
-rw-r--r--drivers/scsi/libata-core.c693
3 files changed, 724 insertions, 674 deletions
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index 320e765fa0cd..15dc2e00e1b2 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -163,7 +163,7 @@ ncr53c8xx-flags-$(CONFIG_SCSI_ZALON) \
163CFLAGS_ncr53c8xx.o := $(ncr53c8xx-flags-y) $(ncr53c8xx-flags-m) 163CFLAGS_ncr53c8xx.o := $(ncr53c8xx-flags-y) $(ncr53c8xx-flags-m)
164zalon7xx-objs := zalon.o ncr53c8xx.o 164zalon7xx-objs := zalon.o ncr53c8xx.o
165NCR_Q720_mod-objs := NCR_Q720.o ncr53c8xx.o 165NCR_Q720_mod-objs := NCR_Q720.o ncr53c8xx.o
166libata-objs := libata-core.o libata-scsi.o 166libata-objs := libata-core.o libata-scsi.o libata-bmdma.o
167oktagon_esp_mod-objs := oktagon_esp.o oktagon_io.o 167oktagon_esp_mod-objs := oktagon_esp.o oktagon_io.o
168 168
169# Files generated that shall be removed upon make clean 169# Files generated that shall be removed upon make clean
diff --git a/drivers/scsi/libata-bmdma.c b/drivers/scsi/libata-bmdma.c
new file mode 100644
index 000000000000..a93336adcd23
--- /dev/null
+++ b/drivers/scsi/libata-bmdma.c
@@ -0,0 +1,703 @@
1/*
2 * libata-bmdma.c - helper library for PCI IDE BMDMA
3 *
4 * Maintained by: Jeff Garzik <jgarzik@pobox.com>
5 * Please ALWAYS copy linux-ide@vger.kernel.org
6 * on emails.
7 *
8 * Copyright 2003-2006 Red Hat, Inc. All rights reserved.
9 * Copyright 2003-2006 Jeff Garzik
10 *
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2, or (at your option)
15 * any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; see the file COPYING. If not, write to
24 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
25 *
26 *
27 * libata documentation is available via 'make {ps|pdf}docs',
28 * as Documentation/DocBook/libata.*
29 *
30 * Hardware documentation available from http://www.t13.org/ and
31 * http://www.sata-io.org/
32 *
33 */
34
35#include <linux/config.h>
36#include <linux/kernel.h>
37#include <linux/pci.h>
38#include <linux/libata.h>
39
40#include "libata.h"
41
42/**
43 * ata_tf_load_pio - send taskfile registers to host controller
44 * @ap: Port to which output is sent
45 * @tf: ATA taskfile register set
46 *
47 * Outputs ATA taskfile to standard ATA host controller.
48 *
49 * LOCKING:
50 * Inherited from caller.
51 */
52
53static void ata_tf_load_pio(struct ata_port *ap, const struct ata_taskfile *tf)
54{
55 struct ata_ioports *ioaddr = &ap->ioaddr;
56 unsigned int is_addr = tf->flags & ATA_TFLAG_ISADDR;
57
58 if (tf->ctl != ap->last_ctl) {
59 outb(tf->ctl, ioaddr->ctl_addr);
60 ap->last_ctl = tf->ctl;
61 ata_wait_idle(ap);
62 }
63
64 if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) {
65 outb(tf->hob_feature, ioaddr->feature_addr);
66 outb(tf->hob_nsect, ioaddr->nsect_addr);
67 outb(tf->hob_lbal, ioaddr->lbal_addr);
68 outb(tf->hob_lbam, ioaddr->lbam_addr);
69 outb(tf->hob_lbah, ioaddr->lbah_addr);
70 VPRINTK("hob: feat 0x%X nsect 0x%X, lba 0x%X 0x%X 0x%X\n",
71 tf->hob_feature,
72 tf->hob_nsect,
73 tf->hob_lbal,
74 tf->hob_lbam,
75 tf->hob_lbah);
76 }
77
78 if (is_addr) {
79 outb(tf->feature, ioaddr->feature_addr);
80 outb(tf->nsect, ioaddr->nsect_addr);
81 outb(tf->lbal, ioaddr->lbal_addr);
82 outb(tf->lbam, ioaddr->lbam_addr);
83 outb(tf->lbah, ioaddr->lbah_addr);
84 VPRINTK("feat 0x%X nsect 0x%X lba 0x%X 0x%X 0x%X\n",
85 tf->feature,
86 tf->nsect,
87 tf->lbal,
88 tf->lbam,
89 tf->lbah);
90 }
91
92 if (tf->flags & ATA_TFLAG_DEVICE) {
93 outb(tf->device, ioaddr->device_addr);
94 VPRINTK("device 0x%X\n", tf->device);
95 }
96
97 ata_wait_idle(ap);
98}
99
100/**
101 * ata_tf_load_mmio - send taskfile registers to host controller
102 * @ap: Port to which output is sent
103 * @tf: ATA taskfile register set
104 *
105 * Outputs ATA taskfile to standard ATA host controller using MMIO.
106 *
107 * LOCKING:
108 * Inherited from caller.
109 */
110
111static void ata_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
112{
113 struct ata_ioports *ioaddr = &ap->ioaddr;
114 unsigned int is_addr = tf->flags & ATA_TFLAG_ISADDR;
115
116 if (tf->ctl != ap->last_ctl) {
117 writeb(tf->ctl, (void __iomem *) ap->ioaddr.ctl_addr);
118 ap->last_ctl = tf->ctl;
119 ata_wait_idle(ap);
120 }
121
122 if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) {
123 writeb(tf->hob_feature, (void __iomem *) ioaddr->feature_addr);
124 writeb(tf->hob_nsect, (void __iomem *) ioaddr->nsect_addr);
125 writeb(tf->hob_lbal, (void __iomem *) ioaddr->lbal_addr);
126 writeb(tf->hob_lbam, (void __iomem *) ioaddr->lbam_addr);
127 writeb(tf->hob_lbah, (void __iomem *) ioaddr->lbah_addr);
128 VPRINTK("hob: feat 0x%X nsect 0x%X, lba 0x%X 0x%X 0x%X\n",
129 tf->hob_feature,
130 tf->hob_nsect,
131 tf->hob_lbal,
132 tf->hob_lbam,
133 tf->hob_lbah);
134 }
135
136 if (is_addr) {
137 writeb(tf->feature, (void __iomem *) ioaddr->feature_addr);
138 writeb(tf->nsect, (void __iomem *) ioaddr->nsect_addr);
139 writeb(tf->lbal, (void __iomem *) ioaddr->lbal_addr);
140 writeb(tf->lbam, (void __iomem *) ioaddr->lbam_addr);
141 writeb(tf->lbah, (void __iomem *) ioaddr->lbah_addr);
142 VPRINTK("feat 0x%X nsect 0x%X lba 0x%X 0x%X 0x%X\n",
143 tf->feature,
144 tf->nsect,
145 tf->lbal,
146 tf->lbam,
147 tf->lbah);
148 }
149
150 if (tf->flags & ATA_TFLAG_DEVICE) {
151 writeb(tf->device, (void __iomem *) ioaddr->device_addr);
152 VPRINTK("device 0x%X\n", tf->device);
153 }
154
155 ata_wait_idle(ap);
156}
157
158
159/**
160 * ata_tf_load - send taskfile registers to host controller
161 * @ap: Port to which output is sent
162 * @tf: ATA taskfile register set
163 *
164 * Outputs ATA taskfile to standard ATA host controller using MMIO
165 * or PIO as indicated by the ATA_FLAG_MMIO flag.
166 * Writes the control, feature, nsect, lbal, lbam, and lbah registers.
167 * Optionally (ATA_TFLAG_LBA48) writes hob_feature, hob_nsect,
168 * hob_lbal, hob_lbam, and hob_lbah.
169 *
170 * This function waits for idle (!BUSY and !DRQ) after writing
171 * registers. If the control register has a new value, this
172 * function also waits for idle after writing control and before
173 * writing the remaining registers.
174 *
175 * May be used as the tf_load() entry in ata_port_operations.
176 *
177 * LOCKING:
178 * Inherited from caller.
179 */
180void ata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
181{
182 if (ap->flags & ATA_FLAG_MMIO)
183 ata_tf_load_mmio(ap, tf);
184 else
185 ata_tf_load_pio(ap, tf);
186}
187
188/**
189 * ata_exec_command_pio - issue ATA command to host controller
190 * @ap: port to which command is being issued
191 * @tf: ATA taskfile register set
192 *
193 * Issues PIO write to ATA command register, with proper
194 * synchronization with interrupt handler / other threads.
195 *
196 * LOCKING:
197 * spin_lock_irqsave(host_set lock)
198 */
199
200static void ata_exec_command_pio(struct ata_port *ap, const struct ata_taskfile *tf)
201{
202 DPRINTK("ata%u: cmd 0x%X\n", ap->id, tf->command);
203
204 outb(tf->command, ap->ioaddr.command_addr);
205 ata_pause(ap);
206}
207
208
209/**
210 * ata_exec_command_mmio - issue ATA command to host controller
211 * @ap: port to which command is being issued
212 * @tf: ATA taskfile register set
213 *
214 * Issues MMIO write to ATA command register, with proper
215 * synchronization with interrupt handler / other threads.
216 *
217 * LOCKING:
218 * spin_lock_irqsave(host_set lock)
219 */
220
221static void ata_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
222{
223 DPRINTK("ata%u: cmd 0x%X\n", ap->id, tf->command);
224
225 writeb(tf->command, (void __iomem *) ap->ioaddr.command_addr);
226 ata_pause(ap);
227}
228
229
230/**
231 * ata_exec_command - issue ATA command to host controller
232 * @ap: port to which command is being issued
233 * @tf: ATA taskfile register set
234 *
235 * Issues PIO/MMIO write to ATA command register, with proper
236 * synchronization with interrupt handler / other threads.
237 *
238 * LOCKING:
239 * spin_lock_irqsave(host_set lock)
240 */
241void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf)
242{
243 if (ap->flags & ATA_FLAG_MMIO)
244 ata_exec_command_mmio(ap, tf);
245 else
246 ata_exec_command_pio(ap, tf);
247}
248
249/**
250 * ata_tf_read_pio - input device's ATA taskfile shadow registers
251 * @ap: Port from which input is read
252 * @tf: ATA taskfile register set for storing input
253 *
254 * Reads ATA taskfile registers for currently-selected device
255 * into @tf.
256 *
257 * LOCKING:
258 * Inherited from caller.
259 */
260
261static void ata_tf_read_pio(struct ata_port *ap, struct ata_taskfile *tf)
262{
263 struct ata_ioports *ioaddr = &ap->ioaddr;
264
265 tf->command = ata_check_status(ap);
266 tf->feature = inb(ioaddr->error_addr);
267 tf->nsect = inb(ioaddr->nsect_addr);
268 tf->lbal = inb(ioaddr->lbal_addr);
269 tf->lbam = inb(ioaddr->lbam_addr);
270 tf->lbah = inb(ioaddr->lbah_addr);
271 tf->device = inb(ioaddr->device_addr);
272
273 if (tf->flags & ATA_TFLAG_LBA48) {
274 outb(tf->ctl | ATA_HOB, ioaddr->ctl_addr);
275 tf->hob_feature = inb(ioaddr->error_addr);
276 tf->hob_nsect = inb(ioaddr->nsect_addr);
277 tf->hob_lbal = inb(ioaddr->lbal_addr);
278 tf->hob_lbam = inb(ioaddr->lbam_addr);
279 tf->hob_lbah = inb(ioaddr->lbah_addr);
280 }
281}
282
283/**
284 * ata_tf_read_mmio - input device's ATA taskfile shadow registers
285 * @ap: Port from which input is read
286 * @tf: ATA taskfile register set for storing input
287 *
288 * Reads ATA taskfile registers for currently-selected device
289 * into @tf via MMIO.
290 *
291 * LOCKING:
292 * Inherited from caller.
293 */
294
295static void ata_tf_read_mmio(struct ata_port *ap, struct ata_taskfile *tf)
296{
297 struct ata_ioports *ioaddr = &ap->ioaddr;
298
299 tf->command = ata_check_status(ap);
300 tf->feature = readb((void __iomem *)ioaddr->error_addr);
301 tf->nsect = readb((void __iomem *)ioaddr->nsect_addr);
302 tf->lbal = readb((void __iomem *)ioaddr->lbal_addr);
303 tf->lbam = readb((void __iomem *)ioaddr->lbam_addr);
304 tf->lbah = readb((void __iomem *)ioaddr->lbah_addr);
305 tf->device = readb((void __iomem *)ioaddr->device_addr);
306
307 if (tf->flags & ATA_TFLAG_LBA48) {
308 writeb(tf->ctl | ATA_HOB, (void __iomem *) ap->ioaddr.ctl_addr);
309 tf->hob_feature = readb((void __iomem *)ioaddr->error_addr);
310 tf->hob_nsect = readb((void __iomem *)ioaddr->nsect_addr);
311 tf->hob_lbal = readb((void __iomem *)ioaddr->lbal_addr);
312 tf->hob_lbam = readb((void __iomem *)ioaddr->lbam_addr);
313 tf->hob_lbah = readb((void __iomem *)ioaddr->lbah_addr);
314 }
315}
316
317
318/**
319 * ata_tf_read - input device's ATA taskfile shadow registers
320 * @ap: Port from which input is read
321 * @tf: ATA taskfile register set for storing input
322 *
323 * Reads ATA taskfile registers for currently-selected device
324 * into @tf.
325 *
326 * Reads nsect, lbal, lbam, lbah, and device. If ATA_TFLAG_LBA48
327 * is set, also reads the hob registers.
328 *
329 * May be used as the tf_read() entry in ata_port_operations.
330 *
331 * LOCKING:
332 * Inherited from caller.
333 */
334void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
335{
336 if (ap->flags & ATA_FLAG_MMIO)
337 ata_tf_read_mmio(ap, tf);
338 else
339 ata_tf_read_pio(ap, tf);
340}
341
342/**
343 * ata_check_status_pio - Read device status reg & clear interrupt
344 * @ap: port where the device is
345 *
346 * Reads ATA taskfile status register for currently-selected device
347 * and return its value. This also clears pending interrupts
348 * from this device
349 *
350 * LOCKING:
351 * Inherited from caller.
352 */
353static u8 ata_check_status_pio(struct ata_port *ap)
354{
355 return inb(ap->ioaddr.status_addr);
356}
357
358/**
359 * ata_check_status_mmio - Read device status reg & clear interrupt
360 * @ap: port where the device is
361 *
362 * Reads ATA taskfile status register for currently-selected device
363 * via MMIO and return its value. This also clears pending interrupts
364 * from this device
365 *
366 * LOCKING:
367 * Inherited from caller.
368 */
369static u8 ata_check_status_mmio(struct ata_port *ap)
370{
371 return readb((void __iomem *) ap->ioaddr.status_addr);
372}
373
374
375/**
376 * ata_check_status - Read device status reg & clear interrupt
377 * @ap: port where the device is
378 *
379 * Reads ATA taskfile status register for currently-selected device
380 * and return its value. This also clears pending interrupts
381 * from this device
382 *
383 * May be used as the check_status() entry in ata_port_operations.
384 *
385 * LOCKING:
386 * Inherited from caller.
387 */
388u8 ata_check_status(struct ata_port *ap)
389{
390 if (ap->flags & ATA_FLAG_MMIO)
391 return ata_check_status_mmio(ap);
392 return ata_check_status_pio(ap);
393}
394
395
396/**
397 * ata_altstatus - Read device alternate status reg
398 * @ap: port where the device is
399 *
400 * Reads ATA taskfile alternate status register for
401 * currently-selected device and return its value.
402 *
403 * Note: may NOT be used as the check_altstatus() entry in
404 * ata_port_operations.
405 *
406 * LOCKING:
407 * Inherited from caller.
408 */
409u8 ata_altstatus(struct ata_port *ap)
410{
411 if (ap->ops->check_altstatus)
412 return ap->ops->check_altstatus(ap);
413
414 if (ap->flags & ATA_FLAG_MMIO)
415 return readb((void __iomem *)ap->ioaddr.altstatus_addr);
416 return inb(ap->ioaddr.altstatus_addr);
417}
418
419#ifdef CONFIG_PCI
420static struct ata_probe_ent *
421ata_probe_ent_alloc(struct device *dev, const struct ata_port_info *port)
422{
423 struct ata_probe_ent *probe_ent;
424
425 probe_ent = kzalloc(sizeof(*probe_ent), GFP_KERNEL);
426 if (!probe_ent) {
427 printk(KERN_ERR DRV_NAME "(%s): out of memory\n",
428 kobject_name(&(dev->kobj)));
429 return NULL;
430 }
431
432 INIT_LIST_HEAD(&probe_ent->node);
433 probe_ent->dev = dev;
434
435 probe_ent->sht = port->sht;
436 probe_ent->host_flags = port->host_flags;
437 probe_ent->pio_mask = port->pio_mask;
438 probe_ent->mwdma_mask = port->mwdma_mask;
439 probe_ent->udma_mask = port->udma_mask;
440 probe_ent->port_ops = port->port_ops;
441
442 return probe_ent;
443}
444
445
446/**
447 * ata_pci_init_native_mode - Initialize native-mode driver
448 * @pdev: pci device to be initialized
449 * @port: array[2] of pointers to port info structures.
450 * @ports: bitmap of ports present
451 *
452 * Utility function which allocates and initializes an
453 * ata_probe_ent structure for a standard dual-port
454 * PIO-based IDE controller. The returned ata_probe_ent
455 * structure can be passed to ata_device_add(). The returned
456 * ata_probe_ent structure should then be freed with kfree().
457 *
458 * The caller need only pass the address of the primary port, the
459 * secondary will be deduced automatically. If the device has non
460 * standard secondary port mappings this function can be called twice,
461 * once for each interface.
462 */
463
464struct ata_probe_ent *
465ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port, int ports)
466{
467 struct ata_probe_ent *probe_ent =
468 ata_probe_ent_alloc(pci_dev_to_dev(pdev), port[0]);
469 int p = 0;
470
471 if (!probe_ent)
472 return NULL;
473
474 probe_ent->irq = pdev->irq;
475 probe_ent->irq_flags = SA_SHIRQ;
476 probe_ent->private_data = port[0]->private_data;
477
478 if (ports & ATA_PORT_PRIMARY) {
479 probe_ent->port[p].cmd_addr = pci_resource_start(pdev, 0);
480 probe_ent->port[p].altstatus_addr =
481 probe_ent->port[p].ctl_addr =
482 pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS;
483 probe_ent->port[p].bmdma_addr = pci_resource_start(pdev, 4);
484 ata_std_ports(&probe_ent->port[p]);
485 p++;
486 }
487
488 if (ports & ATA_PORT_SECONDARY) {
489 probe_ent->port[p].cmd_addr = pci_resource_start(pdev, 2);
490 probe_ent->port[p].altstatus_addr =
491 probe_ent->port[p].ctl_addr =
492 pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS;
493 probe_ent->port[p].bmdma_addr = pci_resource_start(pdev, 4) + 8;
494 ata_std_ports(&probe_ent->port[p]);
495 p++;
496 }
497
498 probe_ent->n_ports = p;
499 return probe_ent;
500}
501
502
503static struct ata_probe_ent *ata_pci_init_legacy_port(struct pci_dev *pdev,
504 struct ata_port_info *port, int port_num)
505{
506 struct ata_probe_ent *probe_ent;
507
508 probe_ent = ata_probe_ent_alloc(pci_dev_to_dev(pdev), port);
509 if (!probe_ent)
510 return NULL;
511
512 probe_ent->legacy_mode = 1;
513 probe_ent->n_ports = 1;
514 probe_ent->hard_port_no = port_num;
515 probe_ent->private_data = port->private_data;
516
517 switch(port_num)
518 {
519 case 0:
520 probe_ent->irq = 14;
521 probe_ent->port[0].cmd_addr = 0x1f0;
522 probe_ent->port[0].altstatus_addr =
523 probe_ent->port[0].ctl_addr = 0x3f6;
524 break;
525 case 1:
526 probe_ent->irq = 15;
527 probe_ent->port[0].cmd_addr = 0x170;
528 probe_ent->port[0].altstatus_addr =
529 probe_ent->port[0].ctl_addr = 0x376;
530 break;
531 }
532
533 probe_ent->port[0].bmdma_addr =
534 pci_resource_start(pdev, 4) + 8 * port_num;
535 ata_std_ports(&probe_ent->port[0]);
536
537 return probe_ent;
538}
539
540
541/**
542 * ata_pci_init_one - Initialize/register PCI IDE host controller
543 * @pdev: Controller to be initialized
544 * @port_info: Information from low-level host driver
545 * @n_ports: Number of ports attached to host controller
546 *
547 * This is a helper function which can be called from a driver's
548 * xxx_init_one() probe function if the hardware uses traditional
549 * IDE taskfile registers.
550 *
551 * This function calls pci_enable_device(), reserves its register
552 * regions, sets the dma mask, enables bus master mode, and calls
553 * ata_device_add()
554 *
555 * LOCKING:
556 * Inherited from PCI layer (may sleep).
557 *
558 * RETURNS:
559 * Zero on success, negative on errno-based value on error.
560 */
561
562int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info,
563 unsigned int n_ports)
564{
565 struct ata_probe_ent *probe_ent = NULL, *probe_ent2 = NULL;
566 struct ata_port_info *port[2];
567 u8 tmp8, mask;
568 unsigned int legacy_mode = 0;
569 int disable_dev_on_err = 1;
570 int rc;
571
572 DPRINTK("ENTER\n");
573
574 port[0] = port_info[0];
575 if (n_ports > 1)
576 port[1] = port_info[1];
577 else
578 port[1] = port[0];
579
580 if ((port[0]->host_flags & ATA_FLAG_NO_LEGACY) == 0
581 && (pdev->class >> 8) == PCI_CLASS_STORAGE_IDE) {
582 /* TODO: What if one channel is in native mode ... */
583 pci_read_config_byte(pdev, PCI_CLASS_PROG, &tmp8);
584 mask = (1 << 2) | (1 << 0);
585 if ((tmp8 & mask) != mask)
586 legacy_mode = (1 << 3);
587 }
588
589 /* FIXME... */
590 if ((!legacy_mode) && (n_ports > 2)) {
591 printk(KERN_ERR "ata: BUG: native mode, n_ports > 2\n");
592 n_ports = 2;
593 /* For now */
594 }
595
596 /* FIXME: Really for ATA it isn't safe because the device may be
597 multi-purpose and we want to leave it alone if it was already
598 enabled. Secondly for shared use as Arjan says we want refcounting
599
600 Checking dev->is_enabled is insufficient as this is not set at
601 boot for the primary video which is BIOS enabled
602 */
603
604 rc = pci_enable_device(pdev);
605 if (rc)
606 return rc;
607
608 rc = pci_request_regions(pdev, DRV_NAME);
609 if (rc) {
610 disable_dev_on_err = 0;
611 goto err_out;
612 }
613
614 /* FIXME: Should use platform specific mappers for legacy port ranges */
615 if (legacy_mode) {
616 if (!request_region(0x1f0, 8, "libata")) {
617 struct resource *conflict, res;
618 res.start = 0x1f0;
619 res.end = 0x1f0 + 8 - 1;
620 conflict = ____request_resource(&ioport_resource, &res);
621 if (!strcmp(conflict->name, "libata"))
622 legacy_mode |= (1 << 0);
623 else {
624 disable_dev_on_err = 0;
625 printk(KERN_WARNING "ata: 0x1f0 IDE port busy\n");
626 }
627 } else
628 legacy_mode |= (1 << 0);
629
630 if (!request_region(0x170, 8, "libata")) {
631 struct resource *conflict, res;
632 res.start = 0x170;
633 res.end = 0x170 + 8 - 1;
634 conflict = ____request_resource(&ioport_resource, &res);
635 if (!strcmp(conflict->name, "libata"))
636 legacy_mode |= (1 << 1);
637 else {
638 disable_dev_on_err = 0;
639 printk(KERN_WARNING "ata: 0x170 IDE port busy\n");
640 }
641 } else
642 legacy_mode |= (1 << 1);
643 }
644
645 /* we have legacy mode, but all ports are unavailable */
646 if (legacy_mode == (1 << 3)) {
647 rc = -EBUSY;
648 goto err_out_regions;
649 }
650
651 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
652 if (rc)
653 goto err_out_regions;
654 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
655 if (rc)
656 goto err_out_regions;
657
658 if (legacy_mode) {
659 if (legacy_mode & (1 << 0))
660 probe_ent = ata_pci_init_legacy_port(pdev, port[0], 0);
661 if (legacy_mode & (1 << 1))
662 probe_ent2 = ata_pci_init_legacy_port(pdev, port[1], 1);
663 } else {
664 if (n_ports == 2)
665 probe_ent = ata_pci_init_native_mode(pdev, port, ATA_PORT_PRIMARY | ATA_PORT_SECONDARY);
666 else
667 probe_ent = ata_pci_init_native_mode(pdev, port, ATA_PORT_PRIMARY);
668 }
669 if (!probe_ent && !probe_ent2) {
670 rc = -ENOMEM;
671 goto err_out_regions;
672 }
673
674 pci_set_master(pdev);
675
676 /* FIXME: check ata_device_add return */
677 if (legacy_mode) {
678 if (legacy_mode & (1 << 0))
679 ata_device_add(probe_ent);
680 if (legacy_mode & (1 << 1))
681 ata_device_add(probe_ent2);
682 } else
683 ata_device_add(probe_ent);
684
685 kfree(probe_ent);
686 kfree(probe_ent2);
687
688 return 0;
689
690err_out_regions:
691 if (legacy_mode & (1 << 0))
692 release_region(0x1f0, 8);
693 if (legacy_mode & (1 << 1))
694 release_region(0x170, 8);
695 pci_release_regions(pdev);
696err_out:
697 if (disable_dev_on_err)
698 pci_disable_device(pdev);
699 return rc;
700}
701
702#endif /* CONFIG_PCI */
703
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 14cdbb336dd5..22db73932253 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -83,403 +83,6 @@ MODULE_DESCRIPTION("Library module for ATA devices");
83MODULE_LICENSE("GPL"); 83MODULE_LICENSE("GPL");
84MODULE_VERSION(DRV_VERSION); 84MODULE_VERSION(DRV_VERSION);
85 85
86/**
87 * ata_tf_load_pio - send taskfile registers to host controller
88 * @ap: Port to which output is sent
89 * @tf: ATA taskfile register set
90 *
91 * Outputs ATA taskfile to standard ATA host controller.
92 *
93 * LOCKING:
94 * Inherited from caller.
95 */
96
97static void ata_tf_load_pio(struct ata_port *ap, const struct ata_taskfile *tf)
98{
99 struct ata_ioports *ioaddr = &ap->ioaddr;
100 unsigned int is_addr = tf->flags & ATA_TFLAG_ISADDR;
101
102 if (tf->ctl != ap->last_ctl) {
103 outb(tf->ctl, ioaddr->ctl_addr);
104 ap->last_ctl = tf->ctl;
105 ata_wait_idle(ap);
106 }
107
108 if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) {
109 outb(tf->hob_feature, ioaddr->feature_addr);
110 outb(tf->hob_nsect, ioaddr->nsect_addr);
111 outb(tf->hob_lbal, ioaddr->lbal_addr);
112 outb(tf->hob_lbam, ioaddr->lbam_addr);
113 outb(tf->hob_lbah, ioaddr->lbah_addr);
114 VPRINTK("hob: feat 0x%X nsect 0x%X, lba 0x%X 0x%X 0x%X\n",
115 tf->hob_feature,
116 tf->hob_nsect,
117 tf->hob_lbal,
118 tf->hob_lbam,
119 tf->hob_lbah);
120 }
121
122 if (is_addr) {
123 outb(tf->feature, ioaddr->feature_addr);
124 outb(tf->nsect, ioaddr->nsect_addr);
125 outb(tf->lbal, ioaddr->lbal_addr);
126 outb(tf->lbam, ioaddr->lbam_addr);
127 outb(tf->lbah, ioaddr->lbah_addr);
128 VPRINTK("feat 0x%X nsect 0x%X lba 0x%X 0x%X 0x%X\n",
129 tf->feature,
130 tf->nsect,
131 tf->lbal,
132 tf->lbam,
133 tf->lbah);
134 }
135
136 if (tf->flags & ATA_TFLAG_DEVICE) {
137 outb(tf->device, ioaddr->device_addr);
138 VPRINTK("device 0x%X\n", tf->device);
139 }
140
141 ata_wait_idle(ap);
142}
143
144/**
145 * ata_tf_load_mmio - send taskfile registers to host controller
146 * @ap: Port to which output is sent
147 * @tf: ATA taskfile register set
148 *
149 * Outputs ATA taskfile to standard ATA host controller using MMIO.
150 *
151 * LOCKING:
152 * Inherited from caller.
153 */
154
155static void ata_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
156{
157 struct ata_ioports *ioaddr = &ap->ioaddr;
158 unsigned int is_addr = tf->flags & ATA_TFLAG_ISADDR;
159
160 if (tf->ctl != ap->last_ctl) {
161 writeb(tf->ctl, (void __iomem *) ap->ioaddr.ctl_addr);
162 ap->last_ctl = tf->ctl;
163 ata_wait_idle(ap);
164 }
165
166 if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) {
167 writeb(tf->hob_feature, (void __iomem *) ioaddr->feature_addr);
168 writeb(tf->hob_nsect, (void __iomem *) ioaddr->nsect_addr);
169 writeb(tf->hob_lbal, (void __iomem *) ioaddr->lbal_addr);
170 writeb(tf->hob_lbam, (void __iomem *) ioaddr->lbam_addr);
171 writeb(tf->hob_lbah, (void __iomem *) ioaddr->lbah_addr);
172 VPRINTK("hob: feat 0x%X nsect 0x%X, lba 0x%X 0x%X 0x%X\n",
173 tf->hob_feature,
174 tf->hob_nsect,
175 tf->hob_lbal,
176 tf->hob_lbam,
177 tf->hob_lbah);
178 }
179
180 if (is_addr) {
181 writeb(tf->feature, (void __iomem *) ioaddr->feature_addr);
182 writeb(tf->nsect, (void __iomem *) ioaddr->nsect_addr);
183 writeb(tf->lbal, (void __iomem *) ioaddr->lbal_addr);
184 writeb(tf->lbam, (void __iomem *) ioaddr->lbam_addr);
185 writeb(tf->lbah, (void __iomem *) ioaddr->lbah_addr);
186 VPRINTK("feat 0x%X nsect 0x%X lba 0x%X 0x%X 0x%X\n",
187 tf->feature,
188 tf->nsect,
189 tf->lbal,
190 tf->lbam,
191 tf->lbah);
192 }
193
194 if (tf->flags & ATA_TFLAG_DEVICE) {
195 writeb(tf->device, (void __iomem *) ioaddr->device_addr);
196 VPRINTK("device 0x%X\n", tf->device);
197 }
198
199 ata_wait_idle(ap);
200}
201
202
203/**
204 * ata_tf_load - send taskfile registers to host controller
205 * @ap: Port to which output is sent
206 * @tf: ATA taskfile register set
207 *
208 * Outputs ATA taskfile to standard ATA host controller using MMIO
209 * or PIO as indicated by the ATA_FLAG_MMIO flag.
210 * Writes the control, feature, nsect, lbal, lbam, and lbah registers.
211 * Optionally (ATA_TFLAG_LBA48) writes hob_feature, hob_nsect,
212 * hob_lbal, hob_lbam, and hob_lbah.
213 *
214 * This function waits for idle (!BUSY and !DRQ) after writing
215 * registers. If the control register has a new value, this
216 * function also waits for idle after writing control and before
217 * writing the remaining registers.
218 *
219 * May be used as the tf_load() entry in ata_port_operations.
220 *
221 * LOCKING:
222 * Inherited from caller.
223 */
224void ata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
225{
226 if (ap->flags & ATA_FLAG_MMIO)
227 ata_tf_load_mmio(ap, tf);
228 else
229 ata_tf_load_pio(ap, tf);
230}
231
232/**
233 * ata_exec_command_pio - issue ATA command to host controller
234 * @ap: port to which command is being issued
235 * @tf: ATA taskfile register set
236 *
237 * Issues PIO write to ATA command register, with proper
238 * synchronization with interrupt handler / other threads.
239 *
240 * LOCKING:
241 * spin_lock_irqsave(host_set lock)
242 */
243
244static void ata_exec_command_pio(struct ata_port *ap, const struct ata_taskfile *tf)
245{
246 DPRINTK("ata%u: cmd 0x%X\n", ap->id, tf->command);
247
248 outb(tf->command, ap->ioaddr.command_addr);
249 ata_pause(ap);
250}
251
252
253/**
254 * ata_exec_command_mmio - issue ATA command to host controller
255 * @ap: port to which command is being issued
256 * @tf: ATA taskfile register set
257 *
258 * Issues MMIO write to ATA command register, with proper
259 * synchronization with interrupt handler / other threads.
260 *
261 * LOCKING:
262 * spin_lock_irqsave(host_set lock)
263 */
264
265static void ata_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
266{
267 DPRINTK("ata%u: cmd 0x%X\n", ap->id, tf->command);
268
269 writeb(tf->command, (void __iomem *) ap->ioaddr.command_addr);
270 ata_pause(ap);
271}
272
273
274/**
275 * ata_exec_command - issue ATA command to host controller
276 * @ap: port to which command is being issued
277 * @tf: ATA taskfile register set
278 *
279 * Issues PIO/MMIO write to ATA command register, with proper
280 * synchronization with interrupt handler / other threads.
281 *
282 * LOCKING:
283 * spin_lock_irqsave(host_set lock)
284 */
285void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf)
286{
287 if (ap->flags & ATA_FLAG_MMIO)
288 ata_exec_command_mmio(ap, tf);
289 else
290 ata_exec_command_pio(ap, tf);
291}
292
293/**
294 * ata_tf_to_host - issue ATA taskfile to host controller
295 * @ap: port to which command is being issued
296 * @tf: ATA taskfile register set
297 *
298 * Issues ATA taskfile register set to ATA host controller,
299 * with proper synchronization with interrupt handler and
300 * other threads.
301 *
302 * LOCKING:
303 * spin_lock_irqsave(host_set lock)
304 */
305
306static inline void ata_tf_to_host(struct ata_port *ap,
307 const struct ata_taskfile *tf)
308{
309 ap->ops->tf_load(ap, tf);
310 ap->ops->exec_command(ap, tf);
311}
312
313/**
314 * ata_tf_read_pio - input device's ATA taskfile shadow registers
315 * @ap: Port from which input is read
316 * @tf: ATA taskfile register set for storing input
317 *
318 * Reads ATA taskfile registers for currently-selected device
319 * into @tf.
320 *
321 * LOCKING:
322 * Inherited from caller.
323 */
324
325static void ata_tf_read_pio(struct ata_port *ap, struct ata_taskfile *tf)
326{
327 struct ata_ioports *ioaddr = &ap->ioaddr;
328
329 tf->command = ata_check_status(ap);
330 tf->feature = inb(ioaddr->error_addr);
331 tf->nsect = inb(ioaddr->nsect_addr);
332 tf->lbal = inb(ioaddr->lbal_addr);
333 tf->lbam = inb(ioaddr->lbam_addr);
334 tf->lbah = inb(ioaddr->lbah_addr);
335 tf->device = inb(ioaddr->device_addr);
336
337 if (tf->flags & ATA_TFLAG_LBA48) {
338 outb(tf->ctl | ATA_HOB, ioaddr->ctl_addr);
339 tf->hob_feature = inb(ioaddr->error_addr);
340 tf->hob_nsect = inb(ioaddr->nsect_addr);
341 tf->hob_lbal = inb(ioaddr->lbal_addr);
342 tf->hob_lbam = inb(ioaddr->lbam_addr);
343 tf->hob_lbah = inb(ioaddr->lbah_addr);
344 }
345}
346
347/**
348 * ata_tf_read_mmio - input device's ATA taskfile shadow registers
349 * @ap: Port from which input is read
350 * @tf: ATA taskfile register set for storing input
351 *
352 * Reads ATA taskfile registers for currently-selected device
353 * into @tf via MMIO.
354 *
355 * LOCKING:
356 * Inherited from caller.
357 */
358
359static void ata_tf_read_mmio(struct ata_port *ap, struct ata_taskfile *tf)
360{
361 struct ata_ioports *ioaddr = &ap->ioaddr;
362
363 tf->command = ata_check_status(ap);
364 tf->feature = readb((void __iomem *)ioaddr->error_addr);
365 tf->nsect = readb((void __iomem *)ioaddr->nsect_addr);
366 tf->lbal = readb((void __iomem *)ioaddr->lbal_addr);
367 tf->lbam = readb((void __iomem *)ioaddr->lbam_addr);
368 tf->lbah = readb((void __iomem *)ioaddr->lbah_addr);
369 tf->device = readb((void __iomem *)ioaddr->device_addr);
370
371 if (tf->flags & ATA_TFLAG_LBA48) {
372 writeb(tf->ctl | ATA_HOB, (void __iomem *) ap->ioaddr.ctl_addr);
373 tf->hob_feature = readb((void __iomem *)ioaddr->error_addr);
374 tf->hob_nsect = readb((void __iomem *)ioaddr->nsect_addr);
375 tf->hob_lbal = readb((void __iomem *)ioaddr->lbal_addr);
376 tf->hob_lbam = readb((void __iomem *)ioaddr->lbam_addr);
377 tf->hob_lbah = readb((void __iomem *)ioaddr->lbah_addr);
378 }
379}
380
381
382/**
383 * ata_tf_read - input device's ATA taskfile shadow registers
384 * @ap: Port from which input is read
385 * @tf: ATA taskfile register set for storing input
386 *
387 * Reads ATA taskfile registers for currently-selected device
388 * into @tf.
389 *
390 * Reads nsect, lbal, lbam, lbah, and device. If ATA_TFLAG_LBA48
391 * is set, also reads the hob registers.
392 *
393 * May be used as the tf_read() entry in ata_port_operations.
394 *
395 * LOCKING:
396 * Inherited from caller.
397 */
398void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
399{
400 if (ap->flags & ATA_FLAG_MMIO)
401 ata_tf_read_mmio(ap, tf);
402 else
403 ata_tf_read_pio(ap, tf);
404}
405
406/**
407 * ata_check_status_pio - Read device status reg & clear interrupt
408 * @ap: port where the device is
409 *
410 * Reads ATA taskfile status register for currently-selected device
411 * and return its value. This also clears pending interrupts
412 * from this device
413 *
414 * LOCKING:
415 * Inherited from caller.
416 */
417static u8 ata_check_status_pio(struct ata_port *ap)
418{
419 return inb(ap->ioaddr.status_addr);
420}
421
422/**
423 * ata_check_status_mmio - Read device status reg & clear interrupt
424 * @ap: port where the device is
425 *
426 * Reads ATA taskfile status register for currently-selected device
427 * via MMIO and return its value. This also clears pending interrupts
428 * from this device
429 *
430 * LOCKING:
431 * Inherited from caller.
432 */
433static u8 ata_check_status_mmio(struct ata_port *ap)
434{
435 return readb((void __iomem *) ap->ioaddr.status_addr);
436}
437
438
439/**
440 * ata_check_status - Read device status reg & clear interrupt
441 * @ap: port where the device is
442 *
443 * Reads ATA taskfile status register for currently-selected device
444 * and return its value. This also clears pending interrupts
445 * from this device
446 *
447 * May be used as the check_status() entry in ata_port_operations.
448 *
449 * LOCKING:
450 * Inherited from caller.
451 */
452u8 ata_check_status(struct ata_port *ap)
453{
454 if (ap->flags & ATA_FLAG_MMIO)
455 return ata_check_status_mmio(ap);
456 return ata_check_status_pio(ap);
457}
458
459
460/**
461 * ata_altstatus - Read device alternate status reg
462 * @ap: port where the device is
463 *
464 * Reads ATA taskfile alternate status register for
465 * currently-selected device and return its value.
466 *
467 * Note: may NOT be used as the check_altstatus() entry in
468 * ata_port_operations.
469 *
470 * LOCKING:
471 * Inherited from caller.
472 */
473u8 ata_altstatus(struct ata_port *ap)
474{
475 if (ap->ops->check_altstatus)
476 return ap->ops->check_altstatus(ap);
477
478 if (ap->flags & ATA_FLAG_MMIO)
479 return readb((void __iomem *)ap->ioaddr.altstatus_addr);
480 return inb(ap->ioaddr.altstatus_addr);
481}
482
483 86
484/** 87/**
485 * ata_tf_to_fis - Convert ATA taskfile to SATA FIS structure 88 * ata_tf_to_fis - Convert ATA taskfile to SATA FIS structure
@@ -2009,6 +1612,26 @@ err_out:
2009} 1612}
2010 1613
2011/** 1614/**
1615 * ata_tf_to_host - issue ATA taskfile to host controller
1616 * @ap: port to which command is being issued
1617 * @tf: ATA taskfile register set
1618 *
1619 * Issues ATA taskfile register set to ATA host controller,
1620 * with proper synchronization with interrupt handler and
1621 * other threads.
1622 *
1623 * LOCKING:
1624 * spin_lock_irqsave(host_set lock)
1625 */
1626
1627static inline void ata_tf_to_host(struct ata_port *ap,
1628 const struct ata_taskfile *tf)
1629{
1630 ap->ops->tf_load(ap, tf);
1631 ap->ops->exec_command(ap, tf);
1632}
1633
1634/**
2012 * ata_busy_sleep - sleep until BSY clears, or timeout 1635 * ata_busy_sleep - sleep until BSY clears, or timeout
2013 * @ap: port containing status register to be polled 1636 * @ap: port containing status register to be polled
2014 * @tmout_pat: impatience timeout 1637 * @tmout_pat: impatience timeout
@@ -5106,32 +4729,6 @@ void ata_std_ports(struct ata_ioports *ioaddr)
5106 ioaddr->command_addr = ioaddr->cmd_addr + ATA_REG_CMD; 4729 ioaddr->command_addr = ioaddr->cmd_addr + ATA_REG_CMD;
5107} 4730}
5108 4731
5109static struct ata_probe_ent *
5110ata_probe_ent_alloc(struct device *dev, const struct ata_port_info *port)
5111{
5112 struct ata_probe_ent *probe_ent;
5113
5114 probe_ent = kzalloc(sizeof(*probe_ent), GFP_KERNEL);
5115 if (!probe_ent) {
5116 printk(KERN_ERR DRV_NAME "(%s): out of memory\n",
5117 kobject_name(&(dev->kobj)));
5118 return NULL;
5119 }
5120
5121 INIT_LIST_HEAD(&probe_ent->node);
5122 probe_ent->dev = dev;
5123
5124 probe_ent->sht = port->sht;
5125 probe_ent->host_flags = port->host_flags;
5126 probe_ent->pio_mask = port->pio_mask;
5127 probe_ent->mwdma_mask = port->mwdma_mask;
5128 probe_ent->udma_mask = port->udma_mask;
5129 probe_ent->port_ops = port->port_ops;
5130
5131 return probe_ent;
5132}
5133
5134
5135 4732
5136#ifdef CONFIG_PCI 4733#ifdef CONFIG_PCI
5137 4734
@@ -5143,256 +4740,6 @@ void ata_pci_host_stop (struct ata_host_set *host_set)
5143} 4740}
5144 4741
5145/** 4742/**
5146 * ata_pci_init_native_mode - Initialize native-mode driver
5147 * @pdev: pci device to be initialized
5148 * @port: array[2] of pointers to port info structures.
5149 * @ports: bitmap of ports present
5150 *
5151 * Utility function which allocates and initializes an
5152 * ata_probe_ent structure for a standard dual-port
5153 * PIO-based IDE controller. The returned ata_probe_ent
5154 * structure can be passed to ata_device_add(). The returned
5155 * ata_probe_ent structure should then be freed with kfree().
5156 *
5157 * The caller need only pass the address of the primary port, the
5158 * secondary will be deduced automatically. If the device has non
5159 * standard secondary port mappings this function can be called twice,
5160 * once for each interface.
5161 */
5162
5163struct ata_probe_ent *
5164ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port, int ports)
5165{
5166 struct ata_probe_ent *probe_ent =
5167 ata_probe_ent_alloc(pci_dev_to_dev(pdev), port[0]);
5168 int p = 0;
5169
5170 if (!probe_ent)
5171 return NULL;
5172
5173 probe_ent->irq = pdev->irq;
5174 probe_ent->irq_flags = SA_SHIRQ;
5175 probe_ent->private_data = port[0]->private_data;
5176
5177 if (ports & ATA_PORT_PRIMARY) {
5178 probe_ent->port[p].cmd_addr = pci_resource_start(pdev, 0);
5179 probe_ent->port[p].altstatus_addr =
5180 probe_ent->port[p].ctl_addr =
5181 pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS;
5182 probe_ent->port[p].bmdma_addr = pci_resource_start(pdev, 4);
5183 ata_std_ports(&probe_ent->port[p]);
5184 p++;
5185 }
5186
5187 if (ports & ATA_PORT_SECONDARY) {
5188 probe_ent->port[p].cmd_addr = pci_resource_start(pdev, 2);
5189 probe_ent->port[p].altstatus_addr =
5190 probe_ent->port[p].ctl_addr =
5191 pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS;
5192 probe_ent->port[p].bmdma_addr = pci_resource_start(pdev, 4) + 8;
5193 ata_std_ports(&probe_ent->port[p]);
5194 p++;
5195 }
5196
5197 probe_ent->n_ports = p;
5198 return probe_ent;
5199}
5200
5201static struct ata_probe_ent *ata_pci_init_legacy_port(struct pci_dev *pdev, struct ata_port_info *port, int port_num)
5202{
5203 struct ata_probe_ent *probe_ent;
5204
5205 probe_ent = ata_probe_ent_alloc(pci_dev_to_dev(pdev), port);
5206 if (!probe_ent)
5207 return NULL;
5208
5209 probe_ent->legacy_mode = 1;
5210 probe_ent->n_ports = 1;
5211 probe_ent->hard_port_no = port_num;
5212 probe_ent->private_data = port->private_data;
5213
5214 switch(port_num)
5215 {
5216 case 0:
5217 probe_ent->irq = 14;
5218 probe_ent->port[0].cmd_addr = 0x1f0;
5219 probe_ent->port[0].altstatus_addr =
5220 probe_ent->port[0].ctl_addr = 0x3f6;
5221 break;
5222 case 1:
5223 probe_ent->irq = 15;
5224 probe_ent->port[0].cmd_addr = 0x170;
5225 probe_ent->port[0].altstatus_addr =
5226 probe_ent->port[0].ctl_addr = 0x376;
5227 break;
5228 }
5229 probe_ent->port[0].bmdma_addr = pci_resource_start(pdev, 4) + 8 * port_num;
5230 ata_std_ports(&probe_ent->port[0]);
5231 return probe_ent;
5232}
5233
5234/**
5235 * ata_pci_init_one - Initialize/register PCI IDE host controller
5236 * @pdev: Controller to be initialized
5237 * @port_info: Information from low-level host driver
5238 * @n_ports: Number of ports attached to host controller
5239 *
5240 * This is a helper function which can be called from a driver's
5241 * xxx_init_one() probe function if the hardware uses traditional
5242 * IDE taskfile registers.
5243 *
5244 * This function calls pci_enable_device(), reserves its register
5245 * regions, sets the dma mask, enables bus master mode, and calls
5246 * ata_device_add()
5247 *
5248 * LOCKING:
5249 * Inherited from PCI layer (may sleep).
5250 *
5251 * RETURNS:
5252 * Zero on success, negative on errno-based value on error.
5253 */
5254
5255int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info,
5256 unsigned int n_ports)
5257{
5258 struct ata_probe_ent *probe_ent = NULL, *probe_ent2 = NULL;
5259 struct ata_port_info *port[2];
5260 u8 tmp8, mask;
5261 unsigned int legacy_mode = 0;
5262 int disable_dev_on_err = 1;
5263 int rc;
5264
5265 DPRINTK("ENTER\n");
5266
5267 port[0] = port_info[0];
5268 if (n_ports > 1)
5269 port[1] = port_info[1];
5270 else
5271 port[1] = port[0];
5272
5273 if ((port[0]->host_flags & ATA_FLAG_NO_LEGACY) == 0
5274 && (pdev->class >> 8) == PCI_CLASS_STORAGE_IDE) {
5275 /* TODO: What if one channel is in native mode ... */
5276 pci_read_config_byte(pdev, PCI_CLASS_PROG, &tmp8);
5277 mask = (1 << 2) | (1 << 0);
5278 if ((tmp8 & mask) != mask)
5279 legacy_mode = (1 << 3);
5280 }
5281
5282 /* FIXME... */
5283 if ((!legacy_mode) && (n_ports > 2)) {
5284 printk(KERN_ERR "ata: BUG: native mode, n_ports > 2\n");
5285 n_ports = 2;
5286 /* For now */
5287 }
5288
5289 /* FIXME: Really for ATA it isn't safe because the device may be
5290 multi-purpose and we want to leave it alone if it was already
5291 enabled. Secondly for shared use as Arjan says we want refcounting
5292
5293 Checking dev->is_enabled is insufficient as this is not set at
5294 boot for the primary video which is BIOS enabled
5295 */
5296
5297 rc = pci_enable_device(pdev);
5298 if (rc)
5299 return rc;
5300
5301 rc = pci_request_regions(pdev, DRV_NAME);
5302 if (rc) {
5303 disable_dev_on_err = 0;
5304 goto err_out;
5305 }
5306
5307 /* FIXME: Should use platform specific mappers for legacy port ranges */
5308 if (legacy_mode) {
5309 if (!request_region(0x1f0, 8, "libata")) {
5310 struct resource *conflict, res;
5311 res.start = 0x1f0;
5312 res.end = 0x1f0 + 8 - 1;
5313 conflict = ____request_resource(&ioport_resource, &res);
5314 if (!strcmp(conflict->name, "libata"))
5315 legacy_mode |= (1 << 0);
5316 else {
5317 disable_dev_on_err = 0;
5318 printk(KERN_WARNING "ata: 0x1f0 IDE port busy\n");
5319 }
5320 } else
5321 legacy_mode |= (1 << 0);
5322
5323 if (!request_region(0x170, 8, "libata")) {
5324 struct resource *conflict, res;
5325 res.start = 0x170;
5326 res.end = 0x170 + 8 - 1;
5327 conflict = ____request_resource(&ioport_resource, &res);
5328 if (!strcmp(conflict->name, "libata"))
5329 legacy_mode |= (1 << 1);
5330 else {
5331 disable_dev_on_err = 0;
5332 printk(KERN_WARNING "ata: 0x170 IDE port busy\n");
5333 }
5334 } else
5335 legacy_mode |= (1 << 1);
5336 }
5337
5338 /* we have legacy mode, but all ports are unavailable */
5339 if (legacy_mode == (1 << 3)) {
5340 rc = -EBUSY;
5341 goto err_out_regions;
5342 }
5343
5344 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
5345 if (rc)
5346 goto err_out_regions;
5347 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
5348 if (rc)
5349 goto err_out_regions;
5350
5351 if (legacy_mode) {
5352 if (legacy_mode & (1 << 0))
5353 probe_ent = ata_pci_init_legacy_port(pdev, port[0], 0);
5354 if (legacy_mode & (1 << 1))
5355 probe_ent2 = ata_pci_init_legacy_port(pdev, port[1], 1);
5356 } else {
5357 if (n_ports == 2)
5358 probe_ent = ata_pci_init_native_mode(pdev, port, ATA_PORT_PRIMARY | ATA_PORT_SECONDARY);
5359 else
5360 probe_ent = ata_pci_init_native_mode(pdev, port, ATA_PORT_PRIMARY);
5361 }
5362 if (!probe_ent && !probe_ent2) {
5363 rc = -ENOMEM;
5364 goto err_out_regions;
5365 }
5366
5367 pci_set_master(pdev);
5368
5369 /* FIXME: check ata_device_add return */
5370 if (legacy_mode) {
5371 if (legacy_mode & (1 << 0))
5372 ata_device_add(probe_ent);
5373 if (legacy_mode & (1 << 1))
5374 ata_device_add(probe_ent2);
5375 } else
5376 ata_device_add(probe_ent);
5377
5378 kfree(probe_ent);
5379 kfree(probe_ent2);
5380
5381 return 0;
5382
5383err_out_regions:
5384 if (legacy_mode & (1 << 0))
5385 release_region(0x1f0, 8);
5386 if (legacy_mode & (1 << 1))
5387 release_region(0x170, 8);
5388 pci_release_regions(pdev);
5389err_out:
5390 if (disable_dev_on_err)
5391 pci_disable_device(pdev);
5392 return rc;
5393}
5394
5395/**
5396 * ata_pci_remove_one - PCI layer callback for device removal 4743 * ata_pci_remove_one - PCI layer callback for device removal
5397 * @pdev: PCI device that was removed 4744 * @pdev: PCI device that was removed
5398 * 4745 *
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-24 23:23:27 -0500