2 * pata-legacy.c - Legacy port PATA/SATA controller driver.
3 * Copyright 2005/2006 Red Hat, 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
32 * This driver handles legacy (that is "ISA/VLB side") IDE ports found
33 * on PC class systems. There are three hybrid devices that are exceptions
34 * The Cyrix 5510/5520 where a pre SFF ATA device is on the bridge and
35 * the MPIIX where the tuning is PCI side but the IDE is "ISA side".
37 * Specific support is included for the ht6560a/ht6560b/opti82c611a/
38 * opti82c465mv/promise 20230c/20630/winbond83759A
40 * Use the autospeed and pio_mask options with:
41 * Appian ADI/2 aka CLPD7220 or AIC25VL01.
42 * Use the jumpers, autospeed and set pio_mask to the mode on the jumpers with
43 * Goldstar GM82C711, PIC-1288A-125, UMC 82C871F, Winbond W83759,
44 * Winbond W83759A, Promise PDC20230-B
46 * For now use autospeed and pio_mask as above with the W83759A. This may
51 #include <linux/kernel.h>
52 #include <linux/module.h>
53 #include <linux/pci.h>
54 #include <linux/init.h>
55 #include <linux/blkdev.h>
56 #include <linux/delay.h>
57 #include <scsi/scsi_host.h>
58 #include <linux/ata.h>
59 #include <linux/libata.h>
60 #include <linux/platform_device.h>
62 #define DRV_NAME "pata_legacy"
63 #define DRV_VERSION "0.6.5"
68 module_param(all, int, 0444);
69 MODULE_PARM_DESC(all, "Grab all legacy port devices, even if PCI(0=off, 1=on)");
76 struct platform_device *platform_dev;
90 QDI6580DP = 9, /* Dual channel mode is different */
102 enum controller type;
103 unsigned long private;
106 struct legacy_controller {
108 struct ata_port_operations *ops;
109 unsigned int pio_mask;
112 int (*setup)(struct platform_device *, struct legacy_probe *probe,
113 struct legacy_data *data);
116 static int legacy_port[NR_HOST] = { 0x1f0, 0x170, 0x1e8, 0x168, 0x1e0, 0x160 };
118 static struct legacy_probe probe_list[NR_HOST];
119 static struct legacy_data legacy_data[NR_HOST];
120 static struct ata_host *legacy_host[NR_HOST];
121 static int nr_legacy_host;
124 static int probe_all; /* Set to check all ISA port ranges */
125 static int ht6560a; /* HT 6560A on primary 1, second 2, both 3 */
126 static int ht6560b; /* HT 6560A on primary 1, second 2, both 3 */
127 static int opti82c611a; /* Opti82c611A on primary 1, sec 2, both 3 */
128 static int opti82c46x; /* Opti 82c465MV present(pri/sec autodetect) */
129 static int qdi; /* Set to probe QDI controllers */
130 static int winbond; /* Set to probe Winbond controllers,
131 give I/O port if non standard */
132 static int autospeed; /* Chip present which snoops speed changes */
133 static int pio_mask = ATA_PIO4; /* PIO range for autospeed devices */
134 static int iordy_mask = 0xFFFFFFFF; /* Use iordy if available */
137 * legacy_probe_add - Add interface to probe list
138 * @port: Controller port
140 * @type: Controller type
141 * @private: Controller specific info
143 * Add an entry into the probe list for ATA controllers. This is used
144 * to add the default ISA slots and then to build up the table
145 * further according to other ISA/VLB/Weird device scans
147 * An I/O port list is used to keep ordering stable and sane, as we
148 * don't have any good way to talk about ordering otherwise
151 static int legacy_probe_add(unsigned long port, unsigned int irq,
152 enum controller type, unsigned long private)
154 struct legacy_probe *lp = &probe_list[0];
156 struct legacy_probe *free = NULL;
158 for (i = 0; i < NR_HOST; i++) {
159 if (lp->port == 0 && free == NULL)
161 /* Matching port, or the correct slot for ordering */
162 if (lp->port == port || legacy_port[i] == port) {
169 printk(KERN_ERR "pata_legacy: Too many interfaces.\n");
172 /* Fill in the entry for later probing */
176 free->private = private;
182 * legacy_set_mode - mode setting
184 * @unused: Device that failed when error is returned
186 * Use a non standard set_mode function. We don't want to be tuned.
188 * The BIOS configured everything. Our job is not to fiddle. Just use
189 * whatever PIO the hardware is using and leave it at that. When we
190 * get some kind of nice user driven API for control then we can
191 * expand on this as per hdparm in the base kernel.
194 static int legacy_set_mode(struct ata_link *link, struct ata_device **unused)
196 struct ata_device *dev;
198 ata_for_each_dev(dev, link, ENABLED) {
199 ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
200 dev->pio_mode = XFER_PIO_0;
201 dev->xfer_mode = XFER_PIO_0;
202 dev->xfer_shift = ATA_SHIFT_PIO;
203 dev->flags |= ATA_DFLAG_PIO;
208 static struct scsi_host_template legacy_sht = {
209 ATA_PIO_SHT(DRV_NAME),
212 static const struct ata_port_operations legacy_base_port_ops = {
213 .inherits = &ata_sff_port_ops,
214 .cable_detect = ata_cable_40wire,
218 * These ops are used if the user indicates the hardware
219 * snoops the commands to decide on the mode and handles the
220 * mode selection "magically" itself. Several legacy controllers
221 * do this. The mode range can be set if it is not 0x1F by setting
225 static struct ata_port_operations simple_port_ops = {
226 .inherits = &legacy_base_port_ops,
227 .sff_data_xfer = ata_sff_data_xfer_noirq,
230 static struct ata_port_operations legacy_port_ops = {
231 .inherits = &legacy_base_port_ops,
232 .sff_data_xfer = ata_sff_data_xfer_noirq,
233 .set_mode = legacy_set_mode,
237 * Promise 20230C and 20620 support
239 * This controller supports PIO0 to PIO2. We set PIO timings
240 * conservatively to allow for 50MHz Vesa Local Bus. The 20620 DMA
241 * support is weird being DMA to controller and PIO'd to the host
245 static void pdc20230_set_piomode(struct ata_port *ap, struct ata_device *adev)
248 int pio = adev->pio_mode - XFER_PIO_0;
252 /* Safe as UP only. Force I/Os to occur together */
254 local_irq_save(flags);
256 /* Unlock the control interface */
259 outb(inb(0x1F2) | 0x80, 0x1F2);
266 while ((inb(0x1F2) & 0x80) && --tries);
268 local_irq_restore(flags);
270 outb(inb(0x1F4) & 0x07, 0x1F4);
273 rt &= 0x07 << (3 * adev->devno);
275 rt |= (1 + 3 * pio) << (3 * adev->devno);
278 outb(inb(0x1F2) | 0x01, 0x1F2);
284 static unsigned int pdc_data_xfer_vlb(struct ata_device *dev,
285 unsigned char *buf, unsigned int buflen, int rw)
287 int slop = buflen & 3;
288 struct ata_port *ap = dev->link->ap;
290 /* 32bit I/O capable *and* we need to write a whole number of dwords */
291 if (ata_id_has_dword_io(dev->id) && (slop == 0 || slop == 3)
292 && (ap->pflags & ATA_PFLAG_PIO32)) {
295 local_irq_save(flags);
297 /* Perform the 32bit I/O synchronization sequence */
298 ioread8(ap->ioaddr.nsect_addr);
299 ioread8(ap->ioaddr.nsect_addr);
300 ioread8(ap->ioaddr.nsect_addr);
304 ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
306 iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
308 if (unlikely(slop)) {
311 pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr));
312 memcpy(buf + buflen - slop, &pad, slop);
314 memcpy(&pad, buf + buflen - slop, slop);
315 iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr);
319 local_irq_restore(flags);
321 buflen = ata_sff_data_xfer_noirq(dev, buf, buflen, rw);
326 static struct ata_port_operations pdc20230_port_ops = {
327 .inherits = &legacy_base_port_ops,
328 .set_piomode = pdc20230_set_piomode,
329 .sff_data_xfer = pdc_data_xfer_vlb,
333 * Holtek 6560A support
335 * This controller supports PIO0 to PIO2 (no IORDY even though higher
336 * timings can be loaded).
339 static void ht6560a_set_piomode(struct ata_port *ap, struct ata_device *adev)
344 /* Get the timing data in cycles. For now play safe at 50Mhz */
345 ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
347 active = clamp_val(t.active, 2, 15);
348 recover = clamp_val(t.recover, 4, 15);
355 iowrite8(recover << 4 | active, ap->ioaddr.device_addr);
356 ioread8(ap->ioaddr.status_addr);
359 static struct ata_port_operations ht6560a_port_ops = {
360 .inherits = &legacy_base_port_ops,
361 .set_piomode = ht6560a_set_piomode,
365 * Holtek 6560B support
367 * This controller supports PIO0 to PIO4. We honour the BIOS/jumper FIFO
368 * setting 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 = clamp_val(t.active, 2, 15);
382 recover = clamp_val(t.recover, 2, 16);
390 iowrite8(recover << 4 | active, ap->ioaddr.device_addr);
392 if (adev->class != ATA_DEV_ATA) {
393 u8 rconf = inb(0x3E6);
399 ioread8(ap->ioaddr.status_addr);
402 static struct ata_port_operations ht6560b_port_ops = {
403 .inherits = &legacy_base_port_ops,
404 .set_piomode = ht6560b_set_piomode,
408 * Opti core chipset helpers
412 * opti_syscfg - read OPTI chipset configuration
413 * @reg: Configuration register to read
415 * Returns the value of an OPTI system board configuration register.
418 static u8 opti_syscfg(u8 reg)
423 /* Uniprocessor chipset and must force cycles adjancent */
424 local_irq_save(flags);
427 local_irq_restore(flags);
434 * This controller supports PIO0 to PIO3.
437 static void opti82c611a_set_piomode(struct ata_port *ap,
438 struct ata_device *adev)
440 u8 active, recover, setup;
442 struct ata_device *pair = ata_dev_pair(adev);
444 int khz[4] = { 50000, 40000, 33000, 25000 };
447 /* Enter configuration mode */
448 ioread16(ap->ioaddr.error_addr);
449 ioread16(ap->ioaddr.error_addr);
450 iowrite8(3, ap->ioaddr.nsect_addr);
452 /* Read VLB clock strapping */
453 clock = 1000000000 / khz[ioread8(ap->ioaddr.lbah_addr) & 0x03];
455 /* Get the timing data in cycles */
456 ata_timing_compute(adev, adev->pio_mode, &t, clock, 1000);
458 /* Setup timing is shared */
460 struct ata_timing tp;
461 ata_timing_compute(pair, pair->pio_mode, &tp, clock, 1000);
463 ata_timing_merge(&t, &tp, &t, ATA_TIMING_SETUP);
466 active = clamp_val(t.active, 2, 17) - 2;
467 recover = clamp_val(t.recover, 1, 16) - 1;
468 setup = clamp_val(t.setup, 1, 4) - 1;
470 /* Select the right timing bank for write timing */
471 rc = ioread8(ap->ioaddr.lbal_addr);
473 rc |= (adev->devno << 7);
474 iowrite8(rc, ap->ioaddr.lbal_addr);
476 /* Write the timings */
477 iowrite8(active << 4 | recover, ap->ioaddr.error_addr);
479 /* Select the right bank for read timings, also
480 load the shared timings for address */
481 rc = ioread8(ap->ioaddr.device_addr);
483 rc |= adev->devno; /* Index select */
484 rc |= (setup << 4) | 0x04;
485 iowrite8(rc, ap->ioaddr.device_addr);
487 /* Load the read timings */
488 iowrite8(active << 4 | recover, ap->ioaddr.data_addr);
490 /* Ensure the timing register mode is right */
491 rc = ioread8(ap->ioaddr.lbal_addr);
494 iowrite8(rc, ap->ioaddr.lbal_addr);
496 /* Exit command mode */
497 iowrite8(0x83, ap->ioaddr.nsect_addr);
501 static struct ata_port_operations opti82c611a_port_ops = {
502 .inherits = &legacy_base_port_ops,
503 .set_piomode = opti82c611a_set_piomode,
509 * This controller supports PIO0 to PIO3. Unlike the 611A the MVB
510 * version is dual channel but doesn't have a lot of unique registers.
513 static void opti82c46x_set_piomode(struct ata_port *ap, struct ata_device *adev)
515 u8 active, recover, setup;
517 struct ata_device *pair = ata_dev_pair(adev);
519 int khz[4] = { 50000, 40000, 33000, 25000 };
524 sysclk = opti_syscfg(0xAC) & 0xC0; /* BIOS set */
526 /* Enter configuration mode */
527 ioread16(ap->ioaddr.error_addr);
528 ioread16(ap->ioaddr.error_addr);
529 iowrite8(3, ap->ioaddr.nsect_addr);
531 /* Read VLB clock strapping */
532 clock = 1000000000 / khz[sysclk];
534 /* Get the timing data in cycles */
535 ata_timing_compute(adev, adev->pio_mode, &t, clock, 1000);
537 /* Setup timing is shared */
539 struct ata_timing tp;
540 ata_timing_compute(pair, pair->pio_mode, &tp, clock, 1000);
542 ata_timing_merge(&t, &tp, &t, ATA_TIMING_SETUP);
545 active = clamp_val(t.active, 2, 17) - 2;
546 recover = clamp_val(t.recover, 1, 16) - 1;
547 setup = clamp_val(t.setup, 1, 4) - 1;
549 /* Select the right timing bank for write timing */
550 rc = ioread8(ap->ioaddr.lbal_addr);
552 rc |= (adev->devno << 7);
553 iowrite8(rc, ap->ioaddr.lbal_addr);
555 /* Write the timings */
556 iowrite8(active << 4 | recover, ap->ioaddr.error_addr);
558 /* Select the right bank for read timings, also
559 load the shared timings for address */
560 rc = ioread8(ap->ioaddr.device_addr);
562 rc |= adev->devno; /* Index select */
563 rc |= (setup << 4) | 0x04;
564 iowrite8(rc, ap->ioaddr.device_addr);
566 /* Load the read timings */
567 iowrite8(active << 4 | recover, ap->ioaddr.data_addr);
569 /* Ensure the timing register mode is right */
570 rc = ioread8(ap->ioaddr.lbal_addr);
573 iowrite8(rc, ap->ioaddr.lbal_addr);
575 /* Exit command mode */
576 iowrite8(0x83, ap->ioaddr.nsect_addr);
578 /* We need to know this for quad device on the MVB */
579 ap->host->private_data = ap;
583 * opt82c465mv_qc_issue - command issue
584 * @qc: command pending
586 * Called when the libata layer is about to issue a command. We wrap
587 * this interface so that we can load the correct ATA timings. The
588 * MVB has a single set of timing registers and these are shared
589 * across channels. As there are two registers we really ought to
590 * track the last two used values as a sort of register window. For
591 * now we just reload on a channel switch. On the single channel
592 * setup this condition never fires so we do nothing extra.
594 * FIXME: dual channel needs ->serialize support
597 static unsigned int opti82c46x_qc_issue(struct ata_queued_cmd *qc)
599 struct ata_port *ap = qc->ap;
600 struct ata_device *adev = qc->dev;
602 /* If timings are set and for the wrong channel (2nd test is
603 due to a libata shortcoming and will eventually go I hope) */
604 if (ap->host->private_data != ap->host
605 && ap->host->private_data != NULL)
606 opti82c46x_set_piomode(ap, adev);
608 return ata_sff_qc_issue(qc);
611 static struct ata_port_operations opti82c46x_port_ops = {
612 .inherits = &legacy_base_port_ops,
613 .set_piomode = opti82c46x_set_piomode,
614 .qc_issue = opti82c46x_qc_issue,
617 static void qdi6500_set_piomode(struct ata_port *ap, struct ata_device *adev)
620 struct legacy_data *ld_qdi = ap->host->private_data;
621 int active, recovery;
624 /* Get the timing data in cycles */
625 ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
628 active = 8 - clamp_val(t.active, 1, 8);
629 recovery = 18 - clamp_val(t.recover, 3, 18);
631 active = 9 - clamp_val(t.active, 2, 9);
632 recovery = 15 - clamp_val(t.recover, 0, 15);
634 timing = (recovery << 4) | active | 0x08;
636 ld_qdi->clock[adev->devno] = timing;
638 outb(timing, ld_qdi->timing);
642 * qdi6580dp_set_piomode - PIO setup for dual channel
646 * In dual channel mode the 6580 has one clock per channel and we have
647 * to software clockswitch in qc_issue.
650 static void qdi6580dp_set_piomode(struct ata_port *ap, struct ata_device *adev)
653 struct legacy_data *ld_qdi = ap->host->private_data;
654 int active, recovery;
657 /* Get the timing data in cycles */
658 ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
661 active = 8 - clamp_val(t.active, 1, 8);
662 recovery = 18 - clamp_val(t.recover, 3, 18);
664 active = 9 - clamp_val(t.active, 2, 9);
665 recovery = 15 - clamp_val(t.recover, 0, 15);
667 timing = (recovery << 4) | active | 0x08;
669 ld_qdi->clock[adev->devno] = timing;
671 outb(timing, ld_qdi->timing + 2 * ap->port_no);
673 if (adev->class != ATA_DEV_ATA)
674 outb(0x5F, ld_qdi->timing + 3);
678 * qdi6580_set_piomode - PIO setup for single channel
682 * In single channel mode the 6580 has one clock per device and we can
683 * avoid the requirement to clock switch. We also have to load the timing
684 * into the right clock according to whether we are master or slave.
687 static void qdi6580_set_piomode(struct ata_port *ap, struct ata_device *adev)
690 struct legacy_data *ld_qdi = ap->host->private_data;
691 int active, recovery;
694 /* Get the timing data in cycles */
695 ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
698 active = 8 - clamp_val(t.active, 1, 8);
699 recovery = 18 - clamp_val(t.recover, 3, 18);
701 active = 9 - clamp_val(t.active, 2, 9);
702 recovery = 15 - clamp_val(t.recover, 0, 15);
704 timing = (recovery << 4) | active | 0x08;
705 ld_qdi->clock[adev->devno] = timing;
706 outb(timing, ld_qdi->timing + 2 * adev->devno);
708 if (adev->class != ATA_DEV_ATA)
709 outb(0x5F, ld_qdi->timing + 3);
713 * qdi_qc_issue - command issue
714 * @qc: command pending
716 * Called when the libata layer is about to issue a command. We wrap
717 * this interface so that we can load the correct ATA timings.
720 static unsigned int qdi_qc_issue(struct ata_queued_cmd *qc)
722 struct ata_port *ap = qc->ap;
723 struct ata_device *adev = qc->dev;
724 struct legacy_data *ld_qdi = ap->host->private_data;
726 if (ld_qdi->clock[adev->devno] != ld_qdi->last) {
727 if (adev->pio_mode) {
728 ld_qdi->last = ld_qdi->clock[adev->devno];
729 outb(ld_qdi->clock[adev->devno], ld_qdi->timing +
733 return ata_sff_qc_issue(qc);
736 static unsigned int vlb32_data_xfer(struct ata_device *adev, unsigned char *buf,
737 unsigned int buflen, int rw)
739 struct ata_port *ap = adev->link->ap;
740 int slop = buflen & 3;
742 if (ata_id_has_dword_io(adev->id) && (slop == 0 || slop == 3)
743 && (ap->pflags & ATA_PFLAG_PIO32)) {
745 iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
747 ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
749 if (unlikely(slop)) {
752 memcpy(&pad, buf + buflen - slop, slop);
753 iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr);
755 pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr));
756 memcpy(buf + buflen - slop, &pad, slop);
759 return (buflen + 3) & ~3;
761 return ata_sff_data_xfer(adev, buf, buflen, rw);
764 static int qdi_port(struct platform_device *dev,
765 struct legacy_probe *lp, struct legacy_data *ld)
767 if (devm_request_region(&dev->dev, lp->private, 4, "qdi") == NULL)
769 ld->timing = lp->private;
773 static struct ata_port_operations qdi6500_port_ops = {
774 .inherits = &legacy_base_port_ops,
775 .set_piomode = qdi6500_set_piomode,
776 .qc_issue = qdi_qc_issue,
777 .sff_data_xfer = vlb32_data_xfer,
780 static struct ata_port_operations qdi6580_port_ops = {
781 .inherits = &legacy_base_port_ops,
782 .set_piomode = qdi6580_set_piomode,
783 .sff_data_xfer = vlb32_data_xfer,
786 static struct ata_port_operations qdi6580dp_port_ops = {
787 .inherits = &legacy_base_port_ops,
788 .set_piomode = qdi6580dp_set_piomode,
789 .sff_data_xfer = vlb32_data_xfer,
792 static DEFINE_SPINLOCK(winbond_lock);
794 static void winbond_writecfg(unsigned long port, u8 reg, u8 val)
797 spin_lock_irqsave(&winbond_lock, flags);
798 outb(reg, port + 0x01);
799 outb(val, port + 0x02);
800 spin_unlock_irqrestore(&winbond_lock, flags);
803 static u8 winbond_readcfg(unsigned long port, u8 reg)
808 spin_lock_irqsave(&winbond_lock, flags);
809 outb(reg, port + 0x01);
810 val = inb(port + 0x02);
811 spin_unlock_irqrestore(&winbond_lock, flags);
816 static void winbond_set_piomode(struct ata_port *ap, struct ata_device *adev)
819 struct legacy_data *ld_winbond = ap->host->private_data;
820 int active, recovery;
822 int timing = 0x88 + (ap->port_no * 4) + (adev->devno * 2);
824 reg = winbond_readcfg(ld_winbond->timing, 0x81);
826 /* Get the timing data in cycles */
827 if (reg & 0x40) /* Fast VLB bus, assume 50MHz */
828 ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
830 ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
832 active = (clamp_val(t.active, 3, 17) - 1) & 0x0F;
833 recovery = (clamp_val(t.recover, 1, 15) + 1) & 0x0F;
834 timing = (active << 4) | recovery;
835 winbond_writecfg(ld_winbond->timing, timing, reg);
837 /* Load the setup timing */
840 if (adev->class != ATA_DEV_ATA)
841 reg |= 0x08; /* FIFO off */
842 if (!ata_pio_need_iordy(adev))
843 reg |= 0x02; /* IORDY off */
844 reg |= (clamp_val(t.setup, 0, 3) << 6);
845 winbond_writecfg(ld_winbond->timing, timing + 1, reg);
848 static int winbond_port(struct platform_device *dev,
849 struct legacy_probe *lp, struct legacy_data *ld)
851 if (devm_request_region(&dev->dev, lp->private, 4, "winbond") == NULL)
853 ld->timing = lp->private;
857 static struct ata_port_operations winbond_port_ops = {
858 .inherits = &legacy_base_port_ops,
859 .set_piomode = winbond_set_piomode,
860 .sff_data_xfer = vlb32_data_xfer,
863 static struct legacy_controller controllers[] = {
864 {"BIOS", &legacy_port_ops, 0x1F,
865 ATA_FLAG_NO_IORDY, 0, NULL },
866 {"Snooping", &simple_port_ops, 0x1F,
868 {"PDC20230", &pdc20230_port_ops, 0x7,
870 ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, NULL },
871 {"HT6560A", &ht6560a_port_ops, 0x07,
872 ATA_FLAG_NO_IORDY, 0, NULL },
873 {"HT6560B", &ht6560b_port_ops, 0x1F,
874 ATA_FLAG_NO_IORDY, 0, NULL },
875 {"OPTI82C611A", &opti82c611a_port_ops, 0x0F,
877 {"OPTI82C46X", &opti82c46x_port_ops, 0x0F,
879 {"QDI6500", &qdi6500_port_ops, 0x07,
881 ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, qdi_port },
882 {"QDI6580", &qdi6580_port_ops, 0x1F,
883 0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, qdi_port },
884 {"QDI6580DP", &qdi6580dp_port_ops, 0x1F,
885 0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, qdi_port },
886 {"W83759A", &winbond_port_ops, 0x1F,
887 0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE,
892 * probe_chip_type - Discover controller
893 * @probe: Probe entry to check
895 * Probe an ATA port and identify the type of controller. We don't
896 * check if the controller appears to be driveless at this point.
899 static __init int probe_chip_type(struct legacy_probe *probe)
901 int mask = 1 << probe->slot;
903 if (winbond && (probe->port == 0x1F0 || probe->port == 0x170)) {
904 u8 reg = winbond_readcfg(winbond, 0x81);
905 reg |= 0x80; /* jumpered mode off */
906 winbond_writecfg(winbond, 0x81, reg);
907 reg = winbond_readcfg(winbond, 0x83);
908 reg |= 0xF0; /* local control */
909 winbond_writecfg(winbond, 0x83, reg);
910 reg = winbond_readcfg(winbond, 0x85);
911 reg |= 0xF0; /* programmable timing */
912 winbond_writecfg(winbond, 0x85, reg);
914 reg = winbond_readcfg(winbond, 0x81);
919 if (probe->port == 0x1F0) {
921 local_irq_save(flags);
923 outb(inb(0x1F2) | 0x80, 0x1F2);
931 if ((inb(0x1F2) & 0x80) == 0) {
932 /* PDC20230c or 20630 ? */
933 printk(KERN_INFO "PDC20230-C/20630 VLB ATA controller"
937 local_irq_restore(flags);
943 if (inb(0x1F2) == 0x00)
944 printk(KERN_INFO "PDC20230-B VLB ATA "
945 "controller detected.\n");
946 local_irq_restore(flags);
949 local_irq_restore(flags);
956 if (opti82c611a & mask)
958 if (opti82c46x & mask)
960 if (autospeed & mask)
967 * legacy_init_one - attach a legacy interface
970 * Register an ISA bus IDE interface. Such interfaces are PIO and we
971 * assume do not support IRQ sharing.
974 static __init int legacy_init_one(struct legacy_probe *probe)
976 struct legacy_controller *controller = &controllers[probe->type];
977 int pio_modes = controller->pio_mask;
978 unsigned long io = probe->port;
979 u32 mask = (1 << probe->slot);
980 struct ata_port_operations *ops = controller->ops;
981 struct legacy_data *ld = &legacy_data[probe->slot];
982 struct ata_host *host = NULL;
984 struct platform_device *pdev;
985 struct ata_device *dev;
986 void __iomem *io_addr, *ctrl_addr;
987 u32 iordy = (iordy_mask & mask) ? 0: ATA_FLAG_NO_IORDY;
990 iordy |= controller->flags;
992 pdev = platform_device_register_simple(DRV_NAME, probe->slot, NULL, 0);
994 return PTR_ERR(pdev);
997 if (devm_request_region(&pdev->dev, io, 8, "pata_legacy") == NULL ||
998 devm_request_region(&pdev->dev, io + 0x0206, 1,
999 "pata_legacy") == NULL)
1003 io_addr = devm_ioport_map(&pdev->dev, io, 8);
1004 ctrl_addr = devm_ioport_map(&pdev->dev, io + 0x0206, 1);
1005 if (!io_addr || !ctrl_addr)
1007 if (controller->setup)
1008 if (controller->setup(pdev, probe, ld) < 0)
1010 host = ata_host_alloc(&pdev->dev, 1);
1013 ap = host->ports[0];
1016 ap->pio_mask = pio_modes;
1017 ap->flags |= ATA_FLAG_SLAVE_POSS | iordy;
1018 ap->pflags |= controller->pflags;
1019 ap->ioaddr.cmd_addr = io_addr;
1020 ap->ioaddr.altstatus_addr = ctrl_addr;
1021 ap->ioaddr.ctl_addr = ctrl_addr;
1022 ata_sff_std_ports(&ap->ioaddr);
1023 ap->host->private_data = ld;
1025 ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", io, io + 0x0206);
1027 ret = ata_host_activate(host, probe->irq, ata_sff_interrupt, 0,
1031 ld->platform_dev = pdev;
1033 /* Nothing found means we drop the port as its probably not there */
1036 ata_for_each_dev(dev, &ap->link, ALL) {
1037 if (!ata_dev_absent(dev)) {
1038 legacy_host[probe->slot] = host;
1039 ld->platform_dev = pdev;
1043 ata_host_detach(host);
1045 platform_device_unregister(pdev);
1050 * legacy_check_special_cases - ATA special cases
1051 * @p: PCI device to check
1052 * @master: set this if we find an ATA master
1053 * @master: set this if we find an ATA secondary
1055 * A small number of vendors implemented early PCI ATA interfaces
1056 * on bridge logic without the ATA interface being PCI visible.
1057 * Where we have a matching PCI driver we must skip the relevant
1058 * device here. If we don't know about it then the legacy driver
1059 * is the right driver anyway.
1062 static void __init legacy_check_special_cases(struct pci_dev *p, int *primary,
1065 /* Cyrix CS5510 pre SFF MWDMA ATA on the bridge */
1066 if (p->vendor == 0x1078 && p->device == 0x0000) {
1067 *primary = *secondary = 1;
1070 /* Cyrix CS5520 pre SFF MWDMA ATA on the bridge */
1071 if (p->vendor == 0x1078 && p->device == 0x0002) {
1072 *primary = *secondary = 1;
1075 /* Intel MPIIX - PIO ATA on non PCI side of bridge */
1076 if (p->vendor == 0x8086 && p->device == 0x1234) {
1078 pci_read_config_word(p, 0x6C, &r);
1080 /* ATA port enabled */
1090 static __init void probe_opti_vlb(void)
1092 /* If an OPTI 82C46X is present find out where the channels are */
1093 static const char *optis[4] = {
1098 u8 ctrl = (opti_syscfg(0x30) & 0xC0) >> 6;
1100 opti82c46x = 3; /* Assume master and slave first */
1101 printk(KERN_INFO DRV_NAME ": Opti 82C46%s chipset support.\n",
1104 chans = (opti_syscfg(0x3F) & 0x20) ? 2 : 1;
1105 ctrl = opti_syscfg(0xAC);
1106 /* Check enabled and this port is the 465MV port. On the
1107 MVB we may have two channels */
1110 legacy_probe_add(0x1F0, 14, OPTI46X, 0);
1111 legacy_probe_add(0x170, 15, OPTI46X, 0);
1114 legacy_probe_add(0x170, 15, OPTI46X, 0);
1116 legacy_probe_add(0x1F0, 14, OPTI46X, 0);
1118 legacy_probe_add(0x1F0, 14, OPTI46X, 0);
1121 static __init void qdi65_identify_port(u8 r, u8 res, unsigned long port)
1123 static const unsigned long ide_port[2] = { 0x170, 0x1F0 };
1124 /* Check card type */
1125 if ((r & 0xF0) == 0xC0) {
1126 /* QD6500: single channel */
1130 legacy_probe_add(ide_port[r & 0x01], 14 + (r & 0x01),
1133 if (((r & 0xF0) == 0xA0) || (r & 0xF0) == 0x50) {
1134 /* QD6580: dual channel */
1135 if (!request_region(port + 2 , 2, "pata_qdi")) {
1136 release_region(port, 2);
1139 res = inb(port + 3);
1140 /* Single channel mode ? */
1142 legacy_probe_add(ide_port[r & 0x01], 14 + (r & 0x01),
1144 else { /* Dual channel mode */
1145 legacy_probe_add(0x1F0, 14, QDI6580DP, port);
1146 /* port + 0x02, r & 0x04 */
1147 legacy_probe_add(0x170, 15, QDI6580DP, port + 2);
1149 release_region(port + 2, 2);
1153 static __init void probe_qdi_vlb(void)
1155 unsigned long flags;
1156 static const unsigned long qd_port[2] = { 0x30, 0xB0 };
1160 * Check each possible QD65xx base address
1163 for (i = 0; i < 2; i++) {
1164 unsigned long port = qd_port[i];
1168 if (request_region(port, 2, "pata_qdi")) {
1169 /* Check for a card */
1170 local_irq_save(flags);
1171 /* I have no h/w that needs this delay but it
1172 is present in the historic code */
1181 local_irq_restore(flags);
1185 release_region(port, 2);
1188 /* Passes the presence test */
1191 /* Check port agrees with port set */
1192 if ((r & 2) >> 1 == i)
1193 qdi65_identify_port(r, res, port);
1194 release_region(port, 2);
1200 * legacy_init - attach legacy interfaces
1202 * Attach legacy IDE interfaces by scanning the usual IRQ/port suspects.
1203 * Right now we do not scan the ide0 and ide1 address but should do so
1204 * for non PCI systems or systems with no PCI IDE legacy mode devices.
1205 * If you fix that note there are special cases to consider like VLB
1206 * drivers and CS5510/20.
1209 static __init int legacy_init(void)
1215 int pci_present = 0;
1216 struct legacy_probe *pl = &probe_list[0];
1219 struct pci_dev *p = NULL;
1221 for_each_pci_dev(p) {
1223 /* Check for any overlap of the system ATA mappings. Native
1224 mode controllers stuck on these addresses or some devices
1225 in 'raid' mode won't be found by the storage class test */
1226 for (r = 0; r < 6; r++) {
1227 if (pci_resource_start(p, r) == 0x1f0)
1229 if (pci_resource_start(p, r) == 0x170)
1232 /* Check for special cases */
1233 legacy_check_special_cases(p, &primary, &secondary);
1235 /* If PCI bus is present then don't probe for tertiary
1241 winbond = 0x130; /* Default port, alt is 1B0 */
1243 if (primary == 0 || all)
1244 legacy_probe_add(0x1F0, 14, UNKNOWN, 0);
1245 if (secondary == 0 || all)
1246 legacy_probe_add(0x170, 15, UNKNOWN, 0);
1248 if (probe_all || !pci_present) {
1249 /* ISA/VLB extra ports */
1250 legacy_probe_add(0x1E8, 11, UNKNOWN, 0);
1251 legacy_probe_add(0x168, 10, UNKNOWN, 0);
1252 legacy_probe_add(0x1E0, 8, UNKNOWN, 0);
1253 legacy_probe_add(0x160, 12, UNKNOWN, 0);
1261 for (i = 0; i < NR_HOST; i++, pl++) {
1264 if (pl->type == UNKNOWN)
1265 pl->type = probe_chip_type(pl);
1267 if (legacy_init_one(pl) == 0)
1275 static __exit void legacy_exit(void)
1279 for (i = 0; i < nr_legacy_host; i++) {
1280 struct legacy_data *ld = &legacy_data[i];
1281 ata_host_detach(legacy_host[i]);
1282 platform_device_unregister(ld->platform_dev);
1286 MODULE_AUTHOR("Alan Cox");
1287 MODULE_DESCRIPTION("low-level driver for legacy ATA");
1288 MODULE_LICENSE("GPL");
1289 MODULE_VERSION(DRV_VERSION);
1291 module_param(probe_all, int, 0);
1292 module_param(autospeed, int, 0);
1293 module_param(ht6560a, int, 0);
1294 module_param(ht6560b, int, 0);
1295 module_param(opti82c611a, int, 0);
1296 module_param(opti82c46x, int, 0);
1297 module_param(qdi, int, 0);
1298 module_param(pio_mask, int, 0);
1299 module_param(iordy_mask, int, 0);
1301 module_init(legacy_init);
1302 module_exit(legacy_exit);