2 * pata-legacy.c - Legacy port PATA/SATA controller driver.
3 * Copyright 2005/2006 Red Hat <alan@redhat.com>, all rights reserved.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2, or (at your option)
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; see the file COPYING. If not, write to
17 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
19 * An ATA driver for the legacy ATA ports.
22 * Opti 82C465/82C611 support: Data sheets at opti-inc.com
24 * Promise 20230/20620:
25 * http://www.ryston.cz/petr/vlb/pdc20230b.html
26 * http://www.ryston.cz/petr/vlb/pdc20230c.html
27 * http://www.ryston.cz/petr/vlb/pdc20630.html
29 * Unsupported but docs exist:
30 * Appian/Adaptec AIC25VL01/Cirrus Logic PD7220
33 * This driver handles legacy (that is "ISA/VLB side") IDE ports found
34 * on PC class systems. There are three hybrid devices that are exceptions
35 * The Cyrix 5510/5520 where a pre SFF ATA device is on the bridge and
36 * the MPIIX where the tuning is PCI side but the IDE is "ISA side".
38 * Specific support is included for the ht6560a/ht6560b/opti82c611a/
39 * opti82c465mv/promise 20230c/20630
41 * Use the autospeed and pio_mask options with:
42 * Appian ADI/2 aka CLPD7220 or AIC25VL01.
43 * Use the jumpers, autospeed and set pio_mask to the mode on the jumpers with
44 * Goldstar GM82C711, PIC-1288A-125, UMC 82C871F, Winbond W83759,
45 * Winbond W83759A, Promise PDC20230-B
47 * For now use autospeed and pio_mask as above with the W83759A. This may
51 * Merge existing pata_qdi driver
55 #include <linux/kernel.h>
56 #include <linux/module.h>
57 #include <linux/pci.h>
58 #include <linux/init.h>
59 #include <linux/blkdev.h>
60 #include <linux/delay.h>
61 #include <scsi/scsi_host.h>
62 #include <linux/ata.h>
63 #include <linux/libata.h>
64 #include <linux/platform_device.h>
66 #define DRV_NAME "pata_legacy"
67 #define DRV_VERSION "0.5.3"
71 static int legacy_port[NR_HOST] = { 0x1f0, 0x170, 0x1e8, 0x168, 0x1e0, 0x160 };
72 static int legacy_irq[NR_HOST] = { 15, 14, 11, 10, 8, 12 };
79 struct platform_device *platform_dev;
83 static struct legacy_data legacy_data[NR_HOST];
84 static struct ata_host *legacy_host[NR_HOST];
85 static int nr_legacy_host;
88 static int probe_all; /* Set to check all ISA port ranges */
89 static int ht6560a; /* HT 6560A on primary 1, secondary 2, both 3 */
90 static int ht6560b; /* HT 6560A on primary 1, secondary 2, both 3 */
91 static int opti82c611a; /* Opti82c611A on primary 1, secondary 2, both 3 */
92 static int opti82c46x; /* Opti 82c465MV present (pri/sec autodetect) */
93 static int autospeed; /* Chip present which snoops speed changes */
94 static int pio_mask = 0x1F; /* PIO range for autospeed devices */
97 * legacy_set_mode - mode setting
99 * @unused: Device that failed when error is returned
101 * Use a non standard set_mode function. We don't want to be tuned.
103 * The BIOS configured everything. Our job is not to fiddle. Just use
104 * whatever PIO the hardware is using and leave it at that. When we
105 * get some kind of nice user driven API for control then we can
106 * expand on this as per hdparm in the base kernel.
109 static int legacy_set_mode(struct ata_port *ap, struct ata_device **unused)
113 for (i = 0; i < ATA_MAX_DEVICES; i++) {
114 struct ata_device *dev = &ap->device[i];
115 if (ata_dev_enabled(dev)) {
116 dev->pio_mode = XFER_PIO_0;
117 dev->xfer_mode = XFER_PIO_0;
118 dev->xfer_shift = ATA_SHIFT_PIO;
119 dev->flags |= ATA_DFLAG_PIO;
125 static struct scsi_host_template legacy_sht = {
126 .module = THIS_MODULE,
128 .ioctl = ata_scsi_ioctl,
129 .queuecommand = ata_scsi_queuecmd,
130 .can_queue = ATA_DEF_QUEUE,
131 .this_id = ATA_SHT_THIS_ID,
132 .sg_tablesize = LIBATA_MAX_PRD,
133 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
134 .emulated = ATA_SHT_EMULATED,
135 .use_clustering = ATA_SHT_USE_CLUSTERING,
136 .proc_name = DRV_NAME,
137 .dma_boundary = ATA_DMA_BOUNDARY,
138 .slave_configure = ata_scsi_slave_config,
139 .slave_destroy = ata_scsi_slave_destroy,
140 .bios_param = ata_std_bios_param,
144 * These ops are used if the user indicates the hardware
145 * snoops the commands to decide on the mode and handles the
146 * mode selection "magically" itself. Several legacy controllers
147 * do this. The mode range can be set if it is not 0x1F by setting
151 static struct ata_port_operations simple_port_ops = {
152 .port_disable = ata_port_disable,
153 .tf_load = ata_tf_load,
154 .tf_read = ata_tf_read,
155 .check_status = ata_check_status,
156 .exec_command = ata_exec_command,
157 .dev_select = ata_std_dev_select,
159 .freeze = ata_bmdma_freeze,
160 .thaw = ata_bmdma_thaw,
161 .error_handler = ata_bmdma_error_handler,
162 .post_internal_cmd = ata_bmdma_post_internal_cmd,
164 .qc_prep = ata_qc_prep,
165 .qc_issue = ata_qc_issue_prot,
167 .data_xfer = ata_pio_data_xfer_noirq,
169 .irq_handler = ata_interrupt,
170 .irq_clear = ata_bmdma_irq_clear,
172 .port_start = ata_port_start,
173 .port_stop = ata_port_stop,
174 .host_stop = ata_host_stop
177 static struct ata_port_operations legacy_port_ops = {
178 .set_mode = legacy_set_mode,
180 .port_disable = ata_port_disable,
181 .tf_load = ata_tf_load,
182 .tf_read = ata_tf_read,
183 .check_status = ata_check_status,
184 .exec_command = ata_exec_command,
185 .dev_select = ata_std_dev_select,
187 .error_handler = ata_bmdma_error_handler,
189 .qc_prep = ata_qc_prep,
190 .qc_issue = ata_qc_issue_prot,
192 .data_xfer = ata_pio_data_xfer_noirq,
194 .irq_handler = ata_interrupt,
195 .irq_clear = ata_bmdma_irq_clear,
197 .port_start = ata_port_start,
198 .port_stop = ata_port_stop,
199 .host_stop = ata_host_stop
203 * Promise 20230C and 20620 support
205 * This controller supports PIO0 to PIO2. We set PIO timings conservatively to
206 * allow for 50MHz Vesa Local Bus. The 20620 DMA support is weird being DMA to
207 * controller and PIO'd to the host and not supported.
210 static void pdc20230_set_piomode(struct ata_port *ap, struct ata_device *adev)
213 int pio = adev->pio_mode - XFER_PIO_0;
217 /* Safe as UP only. Force I/Os to occur together */
219 local_irq_save(flags);
221 /* Unlock the control interface */
225 outb(inb(0x1F2) | 0x80, 0x1F2);
232 while((inb(0x1F2) & 0x80) && --tries);
234 local_irq_restore(flags);
236 outb(inb(0x1F4) & 0x07, 0x1F4);
239 rt &= 0x07 << (3 * adev->devno);
241 rt |= (1 + 3 * pio) << (3 * adev->devno);
244 outb(inb(0x1F2) | 0x01, 0x1F2);
250 static void pdc_data_xfer_vlb(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int write_data)
252 struct ata_port *ap = adev->ap;
253 int slop = buflen & 3;
256 if (ata_id_has_dword_io(adev->id)) {
257 local_irq_save(flags);
259 /* Perform the 32bit I/O synchronization sequence */
260 inb(ap->ioaddr.nsect_addr);
261 inb(ap->ioaddr.nsect_addr);
262 inb(ap->ioaddr.nsect_addr);
267 outsl(ap->ioaddr.data_addr, buf, buflen >> 2);
269 insl(ap->ioaddr.data_addr, buf, buflen >> 2);
271 if (unlikely(slop)) {
274 memcpy(&pad, buf + buflen - slop, slop);
275 outl(le32_to_cpu(pad), ap->ioaddr.data_addr);
277 pad = cpu_to_le16(inl(ap->ioaddr.data_addr));
278 memcpy(buf + buflen - slop, &pad, slop);
281 local_irq_restore(flags);
284 ata_pio_data_xfer_noirq(adev, buf, buflen, write_data);
287 static struct ata_port_operations pdc20230_port_ops = {
288 .set_piomode = pdc20230_set_piomode,
290 .port_disable = ata_port_disable,
291 .tf_load = ata_tf_load,
292 .tf_read = ata_tf_read,
293 .check_status = ata_check_status,
294 .exec_command = ata_exec_command,
295 .dev_select = ata_std_dev_select,
297 .error_handler = ata_bmdma_error_handler,
299 .qc_prep = ata_qc_prep,
300 .qc_issue = ata_qc_issue_prot,
302 .data_xfer = pdc_data_xfer_vlb,
304 .irq_handler = ata_interrupt,
305 .irq_clear = ata_bmdma_irq_clear,
307 .port_start = ata_port_start,
308 .port_stop = ata_port_stop,
309 .host_stop = ata_host_stop
313 * Holtek 6560A support
315 * This controller supports PIO0 to PIO2 (no IORDY even though higher timings
319 static void ht6560a_set_piomode(struct ata_port *ap, struct ata_device *adev)
324 /* Get the timing data in cycles. For now play safe at 50Mhz */
325 ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
327 active = FIT(t.active, 2, 15);
328 recover = FIT(t.recover, 4, 15);
335 outb(recover << 4 | active, ap->ioaddr.device_addr);
336 inb(ap->ioaddr.status_addr);
339 static struct ata_port_operations ht6560a_port_ops = {
340 .set_piomode = ht6560a_set_piomode,
342 .port_disable = ata_port_disable,
343 .tf_load = ata_tf_load,
344 .tf_read = ata_tf_read,
345 .check_status = ata_check_status,
346 .exec_command = ata_exec_command,
347 .dev_select = ata_std_dev_select,
349 .error_handler = ata_bmdma_error_handler,
351 .qc_prep = ata_qc_prep,
352 .qc_issue = ata_qc_issue_prot,
354 .data_xfer = ata_pio_data_xfer, /* Check vlb/noirq */
356 .irq_handler = ata_interrupt,
357 .irq_clear = ata_bmdma_irq_clear,
359 .port_start = ata_port_start,
360 .port_stop = ata_port_stop,
361 .host_stop = ata_host_stop
365 * Holtek 6560B support
367 * This controller supports PIO0 to PIO4. We honour the BIOS/jumper FIFO setting
368 * unless we see an ATAPI device in which case we force it off.
370 * FIXME: need to implement 2nd channel support.
373 static void ht6560b_set_piomode(struct ata_port *ap, struct ata_device *adev)
378 /* Get the timing data in cycles. For now play safe at 50Mhz */
379 ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
381 active = FIT(t.active, 2, 15);
382 recover = FIT(t.recover, 2, 16);
390 outb(recover << 4 | active, ap->ioaddr.device_addr);
392 if (adev->class != ATA_DEV_ATA) {
393 u8 rconf = inb(0x3E6);
399 inb(ap->ioaddr.status_addr);
402 static struct ata_port_operations ht6560b_port_ops = {
403 .set_piomode = ht6560b_set_piomode,
405 .port_disable = ata_port_disable,
406 .tf_load = ata_tf_load,
407 .tf_read = ata_tf_read,
408 .check_status = ata_check_status,
409 .exec_command = ata_exec_command,
410 .dev_select = ata_std_dev_select,
412 .error_handler = ata_bmdma_error_handler,
414 .qc_prep = ata_qc_prep,
415 .qc_issue = ata_qc_issue_prot,
417 .data_xfer = ata_pio_data_xfer, /* FIXME: Check 32bit and noirq */
419 .irq_handler = ata_interrupt,
420 .irq_clear = ata_bmdma_irq_clear,
422 .port_start = ata_port_start,
423 .port_stop = ata_port_stop,
424 .host_stop = ata_host_stop
428 * Opti core chipset helpers
432 * opti_syscfg - read OPTI chipset configuration
433 * @reg: Configuration register to read
435 * Returns the value of an OPTI system board configuration register.
438 static u8 opti_syscfg(u8 reg)
443 /* Uniprocessor chipset and must force cycles adjancent */
444 local_irq_save(flags);
447 local_irq_restore(flags);
454 * This controller supports PIO0 to PIO3.
457 static void opti82c611a_set_piomode(struct ata_port *ap, struct ata_device *adev)
459 u8 active, recover, setup;
461 struct ata_device *pair = ata_dev_pair(adev);
463 int khz[4] = { 50000, 40000, 33000, 25000 };
466 /* Enter configuration mode */
467 inw(ap->ioaddr.error_addr);
468 inw(ap->ioaddr.error_addr);
469 outb(3, ap->ioaddr.nsect_addr);
471 /* Read VLB clock strapping */
472 clock = 1000000000 / khz[inb(ap->ioaddr.lbah_addr) & 0x03];
474 /* Get the timing data in cycles */
475 ata_timing_compute(adev, adev->pio_mode, &t, clock, 1000);
477 /* Setup timing is shared */
479 struct ata_timing tp;
480 ata_timing_compute(pair, pair->pio_mode, &tp, clock, 1000);
482 ata_timing_merge(&t, &tp, &t, ATA_TIMING_SETUP);
485 active = FIT(t.active, 2, 17) - 2;
486 recover = FIT(t.recover, 1, 16) - 1;
487 setup = FIT(t.setup, 1, 4) - 1;
489 /* Select the right timing bank for write timing */
490 rc = inb(ap->ioaddr.lbal_addr);
492 rc |= (adev->devno << 7);
493 outb(rc, ap->ioaddr.lbal_addr);
495 /* Write the timings */
496 outb(active << 4 | recover, ap->ioaddr.error_addr);
498 /* Select the right bank for read timings, also
499 load the shared timings for address */
500 rc = inb(ap->ioaddr.device_addr);
502 rc |= adev->devno; /* Index select */
503 rc |= (setup << 4) | 0x04;
504 outb(rc, ap->ioaddr.device_addr);
506 /* Load the read timings */
507 outb(active << 4 | recover, ap->ioaddr.data_addr);
509 /* Ensure the timing register mode is right */
510 rc = inb (ap->ioaddr.lbal_addr);
513 outb(rc, ap->ioaddr.lbal_addr);
515 /* Exit command mode */
516 outb(0x83, ap->ioaddr.nsect_addr);
520 static struct ata_port_operations opti82c611a_port_ops = {
521 .set_piomode = opti82c611a_set_piomode,
523 .port_disable = ata_port_disable,
524 .tf_load = ata_tf_load,
525 .tf_read = ata_tf_read,
526 .check_status = ata_check_status,
527 .exec_command = ata_exec_command,
528 .dev_select = ata_std_dev_select,
530 .error_handler = ata_bmdma_error_handler,
532 .qc_prep = ata_qc_prep,
533 .qc_issue = ata_qc_issue_prot,
535 .data_xfer = ata_pio_data_xfer,
537 .irq_handler = ata_interrupt,
538 .irq_clear = ata_bmdma_irq_clear,
540 .port_start = ata_port_start,
541 .port_stop = ata_port_stop,
542 .host_stop = ata_host_stop
548 * This controller supports PIO0 to PIO3. Unlike the 611A the MVB
549 * version is dual channel but doesn't have a lot of unique registers.
552 static void opti82c46x_set_piomode(struct ata_port *ap, struct ata_device *adev)
554 u8 active, recover, setup;
556 struct ata_device *pair = ata_dev_pair(adev);
558 int khz[4] = { 50000, 40000, 33000, 25000 };
563 sysclk = opti_syscfg(0xAC) & 0xC0; /* BIOS set */
565 /* Enter configuration mode */
566 inw(ap->ioaddr.error_addr);
567 inw(ap->ioaddr.error_addr);
568 outb(3, ap->ioaddr.nsect_addr);
570 /* Read VLB clock strapping */
571 clock = 1000000000 / khz[sysclk];
573 /* Get the timing data in cycles */
574 ata_timing_compute(adev, adev->pio_mode, &t, clock, 1000);
576 /* Setup timing is shared */
578 struct ata_timing tp;
579 ata_timing_compute(pair, pair->pio_mode, &tp, clock, 1000);
581 ata_timing_merge(&t, &tp, &t, ATA_TIMING_SETUP);
584 active = FIT(t.active, 2, 17) - 2;
585 recover = FIT(t.recover, 1, 16) - 1;
586 setup = FIT(t.setup, 1, 4) - 1;
588 /* Select the right timing bank for write timing */
589 rc = inb(ap->ioaddr.lbal_addr);
591 rc |= (adev->devno << 7);
592 outb(rc, ap->ioaddr.lbal_addr);
594 /* Write the timings */
595 outb(active << 4 | recover, ap->ioaddr.error_addr);
597 /* Select the right bank for read timings, also
598 load the shared timings for address */
599 rc = inb(ap->ioaddr.device_addr);
601 rc |= adev->devno; /* Index select */
602 rc |= (setup << 4) | 0x04;
603 outb(rc, ap->ioaddr.device_addr);
605 /* Load the read timings */
606 outb(active << 4 | recover, ap->ioaddr.data_addr);
608 /* Ensure the timing register mode is right */
609 rc = inb (ap->ioaddr.lbal_addr);
612 outb(rc, ap->ioaddr.lbal_addr);
614 /* Exit command mode */
615 outb(0x83, ap->ioaddr.nsect_addr);
617 /* We need to know this for quad device on the MVB */
618 ap->host->private_data = ap;
622 * opt82c465mv_qc_issue_prot - command issue
623 * @qc: command pending
625 * Called when the libata layer is about to issue a command. We wrap
626 * this interface so that we can load the correct ATA timings. The
627 * MVB has a single set of timing registers and these are shared
628 * across channels. As there are two registers we really ought to
629 * track the last two used values as a sort of register window. For
630 * now we just reload on a channel switch. On the single channel
631 * setup this condition never fires so we do nothing extra.
633 * FIXME: dual channel needs ->serialize support
636 static unsigned int opti82c46x_qc_issue_prot(struct ata_queued_cmd *qc)
638 struct ata_port *ap = qc->ap;
639 struct ata_device *adev = qc->dev;
641 /* If timings are set and for the wrong channel (2nd test is
642 due to a libata shortcoming and will eventually go I hope) */
643 if (ap->host->private_data != ap->host
644 && ap->host->private_data != NULL)
645 opti82c46x_set_piomode(ap, adev);
647 return ata_qc_issue_prot(qc);
650 static struct ata_port_operations opti82c46x_port_ops = {
651 .set_piomode = opti82c46x_set_piomode,
653 .port_disable = ata_port_disable,
654 .tf_load = ata_tf_load,
655 .tf_read = ata_tf_read,
656 .check_status = ata_check_status,
657 .exec_command = ata_exec_command,
658 .dev_select = ata_std_dev_select,
660 .error_handler = ata_bmdma_error_handler,
662 .qc_prep = ata_qc_prep,
663 .qc_issue = opti82c46x_qc_issue_prot,
665 .data_xfer = ata_pio_data_xfer,
667 .irq_handler = ata_interrupt,
668 .irq_clear = ata_bmdma_irq_clear,
670 .port_start = ata_port_start,
671 .port_stop = ata_port_stop,
672 .host_stop = ata_host_stop
677 * legacy_init_one - attach a legacy interface
679 * @io: I/O port start
680 * @ctrl: control port
681 * @irq: interrupt line
683 * Register an ISA bus IDE interface. Such interfaces are PIO and we
684 * assume do not support IRQ sharing.
687 static __init int legacy_init_one(int port, unsigned long io, unsigned long ctrl, int irq)
689 struct legacy_data *ld = &legacy_data[nr_legacy_host];
690 struct ata_probe_ent ae;
691 struct platform_device *pdev;
693 struct ata_port_operations *ops = &legacy_port_ops;
694 int pio_modes = pio_mask;
695 u32 mask = (1 << port);
697 if (request_region(io, 8, "pata_legacy") == NULL)
699 if (request_region(ctrl, 1, "pata_legacy") == NULL)
702 pdev = platform_device_register_simple(DRV_NAME, nr_legacy_host, NULL, 0);
708 if (ht6560a & mask) {
709 ops = &ht6560a_port_ops;
712 if (ht6560b & mask) {
713 ops = &ht6560b_port_ops;
716 if (opti82c611a & mask) {
717 ops = &opti82c611a_port_ops;
720 if (opti82c46x & mask) {
721 ops = &opti82c46x_port_ops;
725 /* Probe for automatically detectable controllers */
727 if (io == 0x1F0 && ops == &legacy_port_ops) {
730 local_irq_save(flags);
734 outb(inb(0x1F2) | 0x80, 0x1F2);
741 if ((inb(0x1F2) & 0x80) == 0) {
742 /* PDC20230c or 20630 ? */
743 printk(KERN_INFO "PDC20230-C/20630 VLB ATA controller detected.\n");
745 ops = &pdc20230_port_ops;
752 if (inb(0x1F2) == 0x00) {
753 printk(KERN_INFO "PDC20230-B VLB ATA controller detected.\n");
756 local_irq_restore(flags);
760 /* Chip does mode setting by command snooping */
761 if (ops == &legacy_port_ops && (autospeed & mask))
762 ops = &simple_port_ops;
763 memset(&ae, 0, sizeof(struct ata_probe_ent));
764 INIT_LIST_HEAD(&ae.node);
767 ae.sht = &legacy_sht;
769 ae.pio_mask = pio_modes;
772 ae.port_flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST;
773 ae.port[0].cmd_addr = io;
774 ae.port[0].altstatus_addr = ctrl;
775 ae.port[0].ctl_addr = ctrl;
776 ata_std_ports(&ae.port[0]);
777 ae.private_data = ld;
779 ret = ata_device_add(&ae);
784 legacy_host[nr_legacy_host++] = dev_get_drvdata(&pdev->dev);
785 ld->platform_dev = pdev;
789 platform_device_unregister(pdev);
791 release_region(ctrl, 1);
793 release_region(io, 8);
798 * legacy_check_special_cases - ATA special cases
799 * @p: PCI device to check
800 * @master: set this if we find an ATA master
801 * @master: set this if we find an ATA secondary
803 * A small number of vendors implemented early PCI ATA interfaces on bridge logic
804 * without the ATA interface being PCI visible. Where we have a matching PCI driver
805 * we must skip the relevant device here. If we don't know about it then the legacy
806 * driver is the right driver anyway.
809 static void legacy_check_special_cases(struct pci_dev *p, int *primary, int *secondary)
811 /* Cyrix CS5510 pre SFF MWDMA ATA on the bridge */
812 if (p->vendor == 0x1078 && p->device == 0x0000) {
813 *primary = *secondary = 1;
816 /* Cyrix CS5520 pre SFF MWDMA ATA on the bridge */
817 if (p->vendor == 0x1078 && p->device == 0x0002) {
818 *primary = *secondary = 1;
821 /* Intel MPIIX - PIO ATA on non PCI side of bridge */
822 if (p->vendor == 0x8086 && p->device == 0x1234) {
824 pci_read_config_word(p, 0x6C, &r);
825 if (r & 0x8000) { /* ATA port enabled */
837 * legacy_init - attach legacy interfaces
839 * Attach legacy IDE interfaces by scanning the usual IRQ/port suspects.
840 * Right now we do not scan the ide0 and ide1 address but should do so
841 * for non PCI systems or systems with no PCI IDE legacy mode devices.
842 * If you fix that note there are special cases to consider like VLB
843 * drivers and CS5510/20.
846 static __init int legacy_init(void)
852 int last_port = NR_HOST;
854 struct pci_dev *p = NULL;
856 for_each_pci_dev(p) {
858 /* Check for any overlap of the system ATA mappings. Native mode controllers
859 stuck on these addresses or some devices in 'raid' mode won't be found by
860 the storage class test */
861 for (r = 0; r < 6; r++) {
862 if (pci_resource_start(p, r) == 0x1f0)
864 if (pci_resource_start(p, r) == 0x170)
867 /* Check for special cases */
868 legacy_check_special_cases(p, &primary, &secondary);
870 /* If PCI bus is present then don't probe for tertiary legacy ports */
875 /* If an OPTI 82C46X is present find out where the channels are */
877 static const char *optis[4] = {
882 u8 ctrl = (opti_syscfg(0x30) & 0xC0) >> 6;
884 opti82c46x = 3; /* Assume master and slave first */
885 printk(KERN_INFO DRV_NAME ": Opti 82C46%s chipset support.\n", optis[ctrl]);
887 chans = (opti_syscfg(0x3F) & 0x20) ? 2 : 1;
888 ctrl = opti_syscfg(0xAC);
889 /* Check enabled and this port is the 465MV port. On the
890 MVB we may have two channels */
893 opti82c46x = 2; /* Slave */
895 opti82c46x = 1; /* Master */
897 opti82c46x = 3; /* Master and Slave */
903 for (i = 0; i < last_port; i++) {
904 /* Skip primary if we have seen a PCI one */
905 if (i == 0 && primary == 1)
907 /* Skip secondary if we have seen a PCI one */
908 if (i == 1 && secondary == 1)
910 if (legacy_init_one(i, legacy_port[i],
911 legacy_port[i] + 0x0206,
920 static __exit void legacy_exit(void)
924 for (i = 0; i < nr_legacy_host; i++) {
925 struct legacy_data *ld = &legacy_data[i];
926 struct ata_port *ap =legacy_host[i]->ports[0];
927 unsigned long io = ap->ioaddr.cmd_addr;
928 unsigned long ctrl = ap->ioaddr.ctl_addr;
929 ata_host_remove(legacy_host[i]);
930 platform_device_unregister(ld->platform_dev);
932 release_region(ld->timing, 2);
933 release_region(io, 8);
934 release_region(ctrl, 1);
938 MODULE_AUTHOR("Alan Cox");
939 MODULE_DESCRIPTION("low-level driver for legacy ATA");
940 MODULE_LICENSE("GPL");
941 MODULE_VERSION(DRV_VERSION);
943 module_param(probe_all, int, 0);
944 module_param(autospeed, int, 0);
945 module_param(ht6560a, int, 0);
946 module_param(ht6560b, int, 0);
947 module_param(opti82c611a, int, 0);
948 module_param(opti82c46x, int, 0);
949 module_param(pio_mask, int, 0);
951 module_init(legacy_init);
952 module_exit(legacy_exit);