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
100 * Use a non standard set_mode function. We don't want to be tuned.
102 * The BIOS configured everything. Our job is not to fiddle. Just use
103 * whatever PIO the hardware is using and leave it at that. When we
104 * get some kind of nice user driven API for control then we can
105 * expand on this as per hdparm in the base kernel.
108 static void legacy_set_mode(struct ata_port *ap)
112 for (i = 0; i < ATA_MAX_DEVICES; i++) {
113 struct ata_device *dev = &ap->device[i];
114 if (ata_dev_enabled(dev)) {
115 dev->pio_mode = XFER_PIO_0;
116 dev->xfer_mode = XFER_PIO_0;
117 dev->xfer_shift = ATA_SHIFT_PIO;
118 dev->flags |= ATA_DFLAG_PIO;
123 static struct scsi_host_template legacy_sht = {
124 .module = THIS_MODULE,
126 .ioctl = ata_scsi_ioctl,
127 .queuecommand = ata_scsi_queuecmd,
128 .can_queue = ATA_DEF_QUEUE,
129 .this_id = ATA_SHT_THIS_ID,
130 .sg_tablesize = LIBATA_MAX_PRD,
131 .max_sectors = ATA_MAX_SECTORS,
132 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
133 .emulated = ATA_SHT_EMULATED,
134 .use_clustering = ATA_SHT_USE_CLUSTERING,
135 .proc_name = DRV_NAME,
136 .dma_boundary = ATA_DMA_BOUNDARY,
137 .slave_configure = ata_scsi_slave_config,
138 .slave_destroy = ata_scsi_slave_destroy,
139 .bios_param = ata_std_bios_param,
143 * These ops are used if the user indicates the hardware
144 * snoops the commands to decide on the mode and handles the
145 * mode selection "magically" itself. Several legacy controllers
146 * do this. The mode range can be set if it is not 0x1F by setting
150 static struct ata_port_operations simple_port_ops = {
151 .port_disable = ata_port_disable,
152 .tf_load = ata_tf_load,
153 .tf_read = ata_tf_read,
154 .check_status = ata_check_status,
155 .exec_command = ata_exec_command,
156 .dev_select = ata_std_dev_select,
158 .freeze = ata_bmdma_freeze,
159 .thaw = ata_bmdma_thaw,
160 .error_handler = ata_bmdma_error_handler,
161 .post_internal_cmd = ata_bmdma_post_internal_cmd,
163 .qc_prep = ata_qc_prep,
164 .qc_issue = ata_qc_issue_prot,
166 .data_xfer = ata_pio_data_xfer_noirq,
168 .irq_handler = ata_interrupt,
169 .irq_clear = ata_bmdma_irq_clear,
171 .port_start = ata_port_start,
172 .port_stop = ata_port_stop,
173 .host_stop = ata_host_stop
176 static struct ata_port_operations legacy_port_ops = {
177 .set_mode = legacy_set_mode,
179 .port_disable = ata_port_disable,
180 .tf_load = ata_tf_load,
181 .tf_read = ata_tf_read,
182 .check_status = ata_check_status,
183 .exec_command = ata_exec_command,
184 .dev_select = ata_std_dev_select,
186 .error_handler = ata_bmdma_error_handler,
188 .qc_prep = ata_qc_prep,
189 .qc_issue = ata_qc_issue_prot,
191 .data_xfer = ata_pio_data_xfer_noirq,
193 .irq_handler = ata_interrupt,
194 .irq_clear = ata_bmdma_irq_clear,
196 .port_start = ata_port_start,
197 .port_stop = ata_port_stop,
198 .host_stop = ata_host_stop
202 * Promise 20230C and 20620 support
204 * This controller supports PIO0 to PIO2. We set PIO timings conservatively to
205 * allow for 50MHz Vesa Local Bus. The 20620 DMA support is weird being DMA to
206 * controller and PIO'd to the host and not supported.
209 static void pdc20230_set_piomode(struct ata_port *ap, struct ata_device *adev)
212 int pio = adev->pio_mode - XFER_PIO_0;
216 /* Safe as UP only. Force I/Os to occur together */
218 local_irq_save(flags);
220 /* Unlock the control interface */
224 outb(inb(0x1F2) | 0x80, 0x1F2);
231 while((inb(0x1F2) & 0x80) && --tries);
233 local_irq_restore(flags);
235 outb(inb(0x1F4) & 0x07, 0x1F4);
238 rt &= 0x07 << (3 * adev->devno);
240 rt |= (1 + 3 * pio) << (3 * adev->devno);
243 outb(inb(0x1F2) | 0x01, 0x1F2);
249 static void pdc_data_xfer_vlb(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int write_data)
251 struct ata_port *ap = adev->ap;
252 int slop = buflen & 3;
255 if (ata_id_has_dword_io(adev->id)) {
256 local_irq_save(flags);
258 /* Perform the 32bit I/O synchronization sequence */
259 inb(ap->ioaddr.nsect_addr);
260 inb(ap->ioaddr.nsect_addr);
261 inb(ap->ioaddr.nsect_addr);
266 outsl(ap->ioaddr.data_addr, buf, buflen >> 2);
268 insl(ap->ioaddr.data_addr, buf, buflen >> 2);
270 if (unlikely(slop)) {
273 memcpy(&pad, buf + buflen - slop, slop);
274 outl(le32_to_cpu(pad), ap->ioaddr.data_addr);
276 pad = cpu_to_le16(inl(ap->ioaddr.data_addr));
277 memcpy(buf + buflen - slop, &pad, slop);
280 local_irq_restore(flags);
283 ata_pio_data_xfer_noirq(adev, buf, buflen, write_data);
286 static struct ata_port_operations pdc20230_port_ops = {
287 .set_piomode = pdc20230_set_piomode,
289 .port_disable = ata_port_disable,
290 .tf_load = ata_tf_load,
291 .tf_read = ata_tf_read,
292 .check_status = ata_check_status,
293 .exec_command = ata_exec_command,
294 .dev_select = ata_std_dev_select,
296 .error_handler = ata_bmdma_error_handler,
298 .qc_prep = ata_qc_prep,
299 .qc_issue = ata_qc_issue_prot,
301 .data_xfer = pdc_data_xfer_vlb,
303 .irq_handler = ata_interrupt,
304 .irq_clear = ata_bmdma_irq_clear,
306 .port_start = ata_port_start,
307 .port_stop = ata_port_stop,
308 .host_stop = ata_host_stop
312 * Holtek 6560A support
314 * This controller supports PIO0 to PIO2 (no IORDY even though higher timings
318 static void ht6560a_set_piomode(struct ata_port *ap, struct ata_device *adev)
323 /* Get the timing data in cycles. For now play safe at 50Mhz */
324 ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
326 active = FIT(t.active, 2, 15);
327 recover = FIT(t.recover, 4, 15);
334 outb(recover << 4 | active, ap->ioaddr.device_addr);
335 inb(ap->ioaddr.status_addr);
338 static struct ata_port_operations ht6560a_port_ops = {
339 .set_piomode = ht6560a_set_piomode,
341 .port_disable = ata_port_disable,
342 .tf_load = ata_tf_load,
343 .tf_read = ata_tf_read,
344 .check_status = ata_check_status,
345 .exec_command = ata_exec_command,
346 .dev_select = ata_std_dev_select,
348 .error_handler = ata_bmdma_error_handler,
350 .qc_prep = ata_qc_prep,
351 .qc_issue = ata_qc_issue_prot,
353 .data_xfer = ata_pio_data_xfer, /* Check vlb/noirq */
355 .irq_handler = ata_interrupt,
356 .irq_clear = ata_bmdma_irq_clear,
358 .port_start = ata_port_start,
359 .port_stop = ata_port_stop,
360 .host_stop = ata_host_stop
364 * Holtek 6560B support
366 * This controller supports PIO0 to PIO4. We honour the BIOS/jumper FIFO setting
367 * unless we see an ATAPI device in which case we force it off.
369 * FIXME: need to implement 2nd channel support.
372 static void ht6560b_set_piomode(struct ata_port *ap, struct ata_device *adev)
377 /* Get the timing data in cycles. For now play safe at 50Mhz */
378 ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
380 active = FIT(t.active, 2, 15);
381 recover = FIT(t.recover, 2, 16);
389 outb(recover << 4 | active, ap->ioaddr.device_addr);
391 if (adev->class != ATA_DEV_ATA) {
392 u8 rconf = inb(0x3E6);
398 inb(ap->ioaddr.status_addr);
401 static struct ata_port_operations ht6560b_port_ops = {
402 .set_piomode = ht6560b_set_piomode,
404 .port_disable = ata_port_disable,
405 .tf_load = ata_tf_load,
406 .tf_read = ata_tf_read,
407 .check_status = ata_check_status,
408 .exec_command = ata_exec_command,
409 .dev_select = ata_std_dev_select,
411 .error_handler = ata_bmdma_error_handler,
413 .qc_prep = ata_qc_prep,
414 .qc_issue = ata_qc_issue_prot,
416 .data_xfer = ata_pio_data_xfer, /* FIXME: Check 32bit and noirq */
418 .irq_handler = ata_interrupt,
419 .irq_clear = ata_bmdma_irq_clear,
421 .port_start = ata_port_start,
422 .port_stop = ata_port_stop,
423 .host_stop = ata_host_stop
427 * Opti core chipset helpers
431 * opti_syscfg - read OPTI chipset configuration
432 * @reg: Configuration register to read
434 * Returns the value of an OPTI system board configuration register.
437 static u8 opti_syscfg(u8 reg)
442 /* Uniprocessor chipset and must force cycles adjancent */
443 local_irq_save(flags);
446 local_irq_restore(flags);
453 * This controller supports PIO0 to PIO3.
456 static void opti82c611a_set_piomode(struct ata_port *ap, struct ata_device *adev)
458 u8 active, recover, setup;
460 struct ata_device *pair = ata_dev_pair(adev);
462 int khz[4] = { 50000, 40000, 33000, 25000 };
465 /* Enter configuration mode */
466 inw(ap->ioaddr.error_addr);
467 inw(ap->ioaddr.error_addr);
468 outb(3, ap->ioaddr.nsect_addr);
470 /* Read VLB clock strapping */
471 clock = 1000000000 / khz[inb(ap->ioaddr.lbah_addr) & 0x03];
473 /* Get the timing data in cycles */
474 ata_timing_compute(adev, adev->pio_mode, &t, clock, 1000);
476 /* Setup timing is shared */
478 struct ata_timing tp;
479 ata_timing_compute(pair, pair->pio_mode, &tp, clock, 1000);
481 ata_timing_merge(&t, &tp, &t, ATA_TIMING_SETUP);
484 active = FIT(t.active, 2, 17) - 2;
485 recover = FIT(t.recover, 1, 16) - 1;
486 setup = FIT(t.setup, 1, 4) - 1;
488 /* Select the right timing bank for write timing */
489 rc = inb(ap->ioaddr.lbal_addr);
491 rc |= (adev->devno << 7);
492 outb(rc, ap->ioaddr.lbal_addr);
494 /* Write the timings */
495 outb(active << 4 | recover, ap->ioaddr.error_addr);
497 /* Select the right bank for read timings, also
498 load the shared timings for address */
499 rc = inb(ap->ioaddr.device_addr);
501 rc |= adev->devno; /* Index select */
502 rc |= (setup << 4) | 0x04;
503 outb(rc, ap->ioaddr.device_addr);
505 /* Load the read timings */
506 outb(active << 4 | recover, ap->ioaddr.data_addr);
508 /* Ensure the timing register mode is right */
509 rc = inb (ap->ioaddr.lbal_addr);
512 outb(rc, ap->ioaddr.lbal_addr);
514 /* Exit command mode */
515 outb(0x83, ap->ioaddr.nsect_addr);
519 static struct ata_port_operations opti82c611a_port_ops = {
520 .set_piomode = opti82c611a_set_piomode,
522 .port_disable = ata_port_disable,
523 .tf_load = ata_tf_load,
524 .tf_read = ata_tf_read,
525 .check_status = ata_check_status,
526 .exec_command = ata_exec_command,
527 .dev_select = ata_std_dev_select,
529 .error_handler = ata_bmdma_error_handler,
531 .qc_prep = ata_qc_prep,
532 .qc_issue = ata_qc_issue_prot,
534 .data_xfer = ata_pio_data_xfer,
536 .irq_handler = ata_interrupt,
537 .irq_clear = ata_bmdma_irq_clear,
539 .port_start = ata_port_start,
540 .port_stop = ata_port_stop,
541 .host_stop = ata_host_stop
547 * This controller supports PIO0 to PIO3. Unlike the 611A the MVB
548 * version is dual channel but doesn't have a lot of unique registers.
551 static void opti82c46x_set_piomode(struct ata_port *ap, struct ata_device *adev)
553 u8 active, recover, setup;
555 struct ata_device *pair = ata_dev_pair(adev);
557 int khz[4] = { 50000, 40000, 33000, 25000 };
562 sysclk = opti_syscfg(0xAC) & 0xC0; /* BIOS set */
564 /* Enter configuration mode */
565 inw(ap->ioaddr.error_addr);
566 inw(ap->ioaddr.error_addr);
567 outb(3, ap->ioaddr.nsect_addr);
569 /* Read VLB clock strapping */
570 clock = 1000000000 / khz[sysclk];
572 /* Get the timing data in cycles */
573 ata_timing_compute(adev, adev->pio_mode, &t, clock, 1000);
575 /* Setup timing is shared */
577 struct ata_timing tp;
578 ata_timing_compute(pair, pair->pio_mode, &tp, clock, 1000);
580 ata_timing_merge(&t, &tp, &t, ATA_TIMING_SETUP);
583 active = FIT(t.active, 2, 17) - 2;
584 recover = FIT(t.recover, 1, 16) - 1;
585 setup = FIT(t.setup, 1, 4) - 1;
587 /* Select the right timing bank for write timing */
588 rc = inb(ap->ioaddr.lbal_addr);
590 rc |= (adev->devno << 7);
591 outb(rc, ap->ioaddr.lbal_addr);
593 /* Write the timings */
594 outb(active << 4 | recover, ap->ioaddr.error_addr);
596 /* Select the right bank for read timings, also
597 load the shared timings for address */
598 rc = inb(ap->ioaddr.device_addr);
600 rc |= adev->devno; /* Index select */
601 rc |= (setup << 4) | 0x04;
602 outb(rc, ap->ioaddr.device_addr);
604 /* Load the read timings */
605 outb(active << 4 | recover, ap->ioaddr.data_addr);
607 /* Ensure the timing register mode is right */
608 rc = inb (ap->ioaddr.lbal_addr);
611 outb(rc, ap->ioaddr.lbal_addr);
613 /* Exit command mode */
614 outb(0x83, ap->ioaddr.nsect_addr);
616 /* We need to know this for quad device on the MVB */
617 ap->host->private_data = ap;
621 * opt82c465mv_qc_issue_prot - command issue
622 * @qc: command pending
624 * Called when the libata layer is about to issue a command. We wrap
625 * this interface so that we can load the correct ATA timings. The
626 * MVB has a single set of timing registers and these are shared
627 * across channels. As there are two registers we really ought to
628 * track the last two used values as a sort of register window. For
629 * now we just reload on a channel switch. On the single channel
630 * setup this condition never fires so we do nothing extra.
632 * FIXME: dual channel needs ->serialize support
635 static unsigned int opti82c46x_qc_issue_prot(struct ata_queued_cmd *qc)
637 struct ata_port *ap = qc->ap;
638 struct ata_device *adev = qc->dev;
640 /* If timings are set and for the wrong channel (2nd test is
641 due to a libata shortcoming and will eventually go I hope) */
642 if (ap->host->private_data != ap->host
643 && ap->host->private_data != NULL)
644 opti82c46x_set_piomode(ap, adev);
646 return ata_qc_issue_prot(qc);
649 static struct ata_port_operations opti82c46x_port_ops = {
650 .set_piomode = opti82c46x_set_piomode,
652 .port_disable = ata_port_disable,
653 .tf_load = ata_tf_load,
654 .tf_read = ata_tf_read,
655 .check_status = ata_check_status,
656 .exec_command = ata_exec_command,
657 .dev_select = ata_std_dev_select,
659 .error_handler = ata_bmdma_error_handler,
661 .qc_prep = ata_qc_prep,
662 .qc_issue = opti82c46x_qc_issue_prot,
664 .data_xfer = ata_pio_data_xfer,
666 .irq_handler = ata_interrupt,
667 .irq_clear = ata_bmdma_irq_clear,
669 .port_start = ata_port_start,
670 .port_stop = ata_port_stop,
671 .host_stop = ata_host_stop
676 * legacy_init_one - attach a legacy interface
678 * @io: I/O port start
679 * @ctrl: control port
680 * @irq: interrupt line
682 * Register an ISA bus IDE interface. Such interfaces are PIO and we
683 * assume do not support IRQ sharing.
686 static __init int legacy_init_one(int port, unsigned long io, unsigned long ctrl, int irq)
688 struct legacy_data *ld = &legacy_data[nr_legacy_host];
689 struct ata_probe_ent ae;
690 struct platform_device *pdev;
692 struct ata_port_operations *ops = &legacy_port_ops;
693 int pio_modes = pio_mask;
694 u32 mask = (1 << port);
696 if (request_region(io, 8, "pata_legacy") == NULL)
698 if (request_region(ctrl, 1, "pata_legacy") == NULL)
701 pdev = platform_device_register_simple(DRV_NAME, nr_legacy_host, NULL, 0);
705 if (ht6560a & mask) {
706 ops = &ht6560a_port_ops;
709 if (ht6560b & mask) {
710 ops = &ht6560b_port_ops;
713 if (opti82c611a & mask) {
714 ops = &opti82c611a_port_ops;
717 if (opti82c46x & mask) {
718 ops = &opti82c46x_port_ops;
722 /* Probe for automatically detectable controllers */
724 if (io == 0x1F0 && ops == &legacy_port_ops) {
727 local_irq_save(flags);
731 outb(inb(0x1F2) | 0x80, 0x1F2);
738 if ((inb(0x1F2) & 0x80) == 0) {
739 /* PDC20230c or 20630 ? */
740 printk(KERN_INFO "PDC20230-C/20630 VLB ATA controller detected.\n");
742 ops = &pdc20230_port_ops;
749 if (inb(0x1F2) == 0x00) {
750 printk(KERN_INFO "PDC20230-B VLB ATA controller detected.\n");
753 local_irq_restore(flags);
757 /* Chip does mode setting by command snooping */
758 if (ops == &legacy_port_ops && (autospeed & mask))
759 ops = &simple_port_ops;
760 memset(&ae, 0, sizeof(struct ata_probe_ent));
761 INIT_LIST_HEAD(&ae.node);
764 ae.sht = &legacy_sht;
766 ae.pio_mask = pio_modes;
769 ae.port_flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST;
770 ae.port[0].cmd_addr = io;
771 ae.port[0].altstatus_addr = ctrl;
772 ae.port[0].ctl_addr = ctrl;
773 ata_std_ports(&ae.port[0]);
774 ae.private_data = ld;
776 ret = ata_device_add(&ae);
781 legacy_host[nr_legacy_host++] = dev_get_drvdata(&pdev->dev);
782 ld->platform_dev = pdev;
786 platform_device_unregister(pdev);
788 release_region(ctrl, 1);
790 release_region(io, 8);
795 * legacy_check_special_cases - ATA special cases
796 * @p: PCI device to check
797 * @master: set this if we find an ATA master
798 * @master: set this if we find an ATA secondary
800 * A small number of vendors implemented early PCI ATA interfaces on bridge logic
801 * without the ATA interface being PCI visible. Where we have a matching PCI driver
802 * we must skip the relevant device here. If we don't know about it then the legacy
803 * driver is the right driver anyway.
806 static void legacy_check_special_cases(struct pci_dev *p, int *primary, int *secondary)
808 /* Cyrix CS5510 pre SFF MWDMA ATA on the bridge */
809 if (p->vendor == 0x1078 && p->device == 0x0000) {
810 *primary = *secondary = 1;
813 /* Cyrix CS5520 pre SFF MWDMA ATA on the bridge */
814 if (p->vendor == 0x1078 && p->device == 0x0002) {
815 *primary = *secondary = 1;
818 /* Intel MPIIX - PIO ATA on non PCI side of bridge */
819 if (p->vendor == 0x8086 && p->device == 0x1234) {
821 pci_read_config_word(p, 0x6C, &r);
822 if (r & 0x8000) { /* ATA port enabled */
834 * legacy_init - attach legacy interfaces
836 * Attach legacy IDE interfaces by scanning the usual IRQ/port suspects.
837 * Right now we do not scan the ide0 and ide1 address but should do so
838 * for non PCI systems or systems with no PCI IDE legacy mode devices.
839 * If you fix that note there are special cases to consider like VLB
840 * drivers and CS5510/20.
843 static __init int legacy_init(void)
849 int last_port = NR_HOST;
851 struct pci_dev *p = NULL;
853 for_each_pci_dev(p) {
855 /* Check for any overlap of the system ATA mappings. Native mode controllers
856 stuck on these addresses or some devices in 'raid' mode won't be found by
857 the storage class test */
858 for (r = 0; r < 6; r++) {
859 if (pci_resource_start(p, r) == 0x1f0)
861 if (pci_resource_start(p, r) == 0x170)
864 /* Check for special cases */
865 legacy_check_special_cases(p, &primary, &secondary);
867 /* If PCI bus is present then don't probe for tertiary legacy ports */
872 /* If an OPTI 82C46X is present find out where the channels are */
874 static const char *optis[4] = {
879 u8 ctrl = (opti_syscfg(0x30) & 0xC0) >> 6;
881 opti82c46x = 3; /* Assume master and slave first */
882 printk(KERN_INFO DRV_NAME ": Opti 82C46%s chipset support.\n", optis[ctrl]);
884 chans = (opti_syscfg(0x3F) & 0x20) ? 2 : 1;
885 ctrl = opti_syscfg(0xAC);
886 /* Check enabled and this port is the 465MV port. On the
887 MVB we may have two channels */
890 opti82c46x = 2; /* Slave */
892 opti82c46x = 1; /* Master */
894 opti82c46x = 3; /* Master and Slave */
900 for (i = 0; i < last_port; i++) {
901 /* Skip primary if we have seen a PCI one */
902 if (i == 0 && primary == 1)
904 /* Skip secondary if we have seen a PCI one */
905 if (i == 1 && secondary == 1)
907 if (legacy_init_one(i, legacy_port[i],
908 legacy_port[i] + 0x0206,
917 static __exit void legacy_exit(void)
921 for (i = 0; i < nr_legacy_host; i++) {
922 struct legacy_data *ld = &legacy_data[i];
923 struct ata_port *ap =legacy_host[i]->ports[0];
924 unsigned long io = ap->ioaddr.cmd_addr;
925 unsigned long ctrl = ap->ioaddr.ctl_addr;
926 ata_host_remove(legacy_host[i]);
927 platform_device_unregister(ld->platform_dev);
929 release_region(ld->timing, 2);
930 release_region(io, 8);
931 release_region(ctrl, 1);
935 MODULE_AUTHOR("Alan Cox");
936 MODULE_DESCRIPTION("low-level driver for legacy ATA");
937 MODULE_LICENSE("GPL");
938 MODULE_VERSION(DRV_VERSION);
940 module_param(probe_all, int, 0);
941 module_param(autospeed, int, 0);
942 module_param(ht6560a, int, 0);
943 module_param(ht6560b, int, 0);
944 module_param(opti82c611a, int, 0);
945 module_param(opti82c46x, int, 0);
946 module_param(pio_mask, int, 0);
948 module_init(legacy_init);
949 module_exit(legacy_exit);