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;
111 int (*setup)(struct platform_device *, struct legacy_probe *probe,
112 struct legacy_data *data);
115 static int legacy_port[NR_HOST] = { 0x1f0, 0x170, 0x1e8, 0x168, 0x1e0, 0x160 };
117 static struct legacy_probe probe_list[NR_HOST];
118 static struct legacy_data legacy_data[NR_HOST];
119 static struct ata_host *legacy_host[NR_HOST];
120 static int nr_legacy_host;
123 static int probe_all; /* Set to check all ISA port ranges */
124 static int ht6560a; /* HT 6560A on primary 1, second 2, both 3 */
125 static int ht6560b; /* HT 6560A on primary 1, second 2, both 3 */
126 static int opti82c611a; /* Opti82c611A on primary 1, sec 2, both 3 */
127 static int opti82c46x; /* Opti 82c465MV present(pri/sec autodetect) */
128 static int qdi; /* Set to probe QDI controllers */
129 static int winbond; /* Set to probe Winbond controllers,
130 give I/O port if non standard */
131 static int autospeed; /* Chip present which snoops speed changes */
132 static int pio_mask = 0x1F; /* PIO range for autospeed devices */
133 static int iordy_mask = 0xFFFFFFFF; /* Use iordy if available */
136 * legacy_probe_add - Add interface to probe list
137 * @port: Controller port
139 * @type: Controller type
140 * @private: Controller specific info
142 * Add an entry into the probe list for ATA controllers. This is used
143 * to add the default ISA slots and then to build up the table
144 * further according to other ISA/VLB/Weird device scans
146 * An I/O port list is used to keep ordering stable and sane, as we
147 * don't have any good way to talk about ordering otherwise
150 static int legacy_probe_add(unsigned long port, unsigned int irq,
151 enum controller type, unsigned long private)
153 struct legacy_probe *lp = &probe_list[0];
155 struct legacy_probe *free = NULL;
157 for (i = 0; i < NR_HOST; i++) {
158 if (lp->port == 0 && free == NULL)
160 /* Matching port, or the correct slot for ordering */
161 if (lp->port == port || legacy_port[i] == port) {
168 printk(KERN_ERR "pata_legacy: Too many interfaces.\n");
171 /* Fill in the entry for later probing */
175 free->private = private;
181 * legacy_set_mode - mode setting
183 * @unused: Device that failed when error is returned
185 * Use a non standard set_mode function. We don't want to be tuned.
187 * The BIOS configured everything. Our job is not to fiddle. Just use
188 * whatever PIO the hardware is using and leave it at that. When we
189 * get some kind of nice user driven API for control then we can
190 * expand on this as per hdparm in the base kernel.
193 static int legacy_set_mode(struct ata_link *link, struct ata_device **unused)
195 struct ata_device *dev;
197 ata_for_each_dev(dev, link, ENABLED) {
198 ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
199 dev->pio_mode = XFER_PIO_0;
200 dev->xfer_mode = XFER_PIO_0;
201 dev->xfer_shift = ATA_SHIFT_PIO;
202 dev->flags |= ATA_DFLAG_PIO;
207 static struct scsi_host_template legacy_sht = {
208 ATA_PIO_SHT(DRV_NAME),
211 static const struct ata_port_operations legacy_base_port_ops = {
212 .inherits = &ata_sff_port_ops,
213 .cable_detect = ata_cable_40wire,
217 * These ops are used if the user indicates the hardware
218 * snoops the commands to decide on the mode and handles the
219 * mode selection "magically" itself. Several legacy controllers
220 * do this. The mode range can be set if it is not 0x1F by setting
224 static struct ata_port_operations simple_port_ops = {
225 .inherits = &legacy_base_port_ops,
226 .sff_data_xfer = ata_sff_data_xfer_noirq,
229 static struct ata_port_operations legacy_port_ops = {
230 .inherits = &legacy_base_port_ops,
231 .sff_data_xfer = ata_sff_data_xfer_noirq,
232 .set_mode = legacy_set_mode,
236 * Promise 20230C and 20620 support
238 * This controller supports PIO0 to PIO2. We set PIO timings
239 * conservatively to allow for 50MHz Vesa Local Bus. The 20620 DMA
240 * support is weird being DMA to controller and PIO'd to the host
244 static void pdc20230_set_piomode(struct ata_port *ap, struct ata_device *adev)
247 int pio = adev->pio_mode - XFER_PIO_0;
251 /* Safe as UP only. Force I/Os to occur together */
253 local_irq_save(flags);
255 /* Unlock the control interface */
258 outb(inb(0x1F2) | 0x80, 0x1F2);
265 while ((inb(0x1F2) & 0x80) && --tries);
267 local_irq_restore(flags);
269 outb(inb(0x1F4) & 0x07, 0x1F4);
272 rt &= 0x07 << (3 * adev->devno);
274 rt |= (1 + 3 * pio) << (3 * adev->devno);
277 outb(inb(0x1F2) | 0x01, 0x1F2);
283 static unsigned int pdc_data_xfer_vlb(struct ata_device *dev,
284 unsigned char *buf, unsigned int buflen, int rw)
286 if (ata_id_has_dword_io(dev->id)) {
287 struct ata_port *ap = dev->link->ap;
288 int slop = buflen & 3;
291 local_irq_save(flags);
293 /* Perform the 32bit I/O synchronization sequence */
294 ioread8(ap->ioaddr.nsect_addr);
295 ioread8(ap->ioaddr.nsect_addr);
296 ioread8(ap->ioaddr.nsect_addr);
300 ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
302 iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
304 if (unlikely(slop)) {
307 pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr));
308 memcpy(buf + buflen - slop, &pad, slop);
310 memcpy(&pad, buf + buflen - slop, slop);
311 iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr);
315 local_irq_restore(flags);
317 buflen = ata_sff_data_xfer_noirq(dev, buf, buflen, rw);
322 static struct ata_port_operations pdc20230_port_ops = {
323 .inherits = &legacy_base_port_ops,
324 .set_piomode = pdc20230_set_piomode,
325 .sff_data_xfer = pdc_data_xfer_vlb,
329 * Holtek 6560A support
331 * This controller supports PIO0 to PIO2 (no IORDY even though higher
332 * timings can be loaded).
335 static void ht6560a_set_piomode(struct ata_port *ap, struct ata_device *adev)
340 /* Get the timing data in cycles. For now play safe at 50Mhz */
341 ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
343 active = clamp_val(t.active, 2, 15);
344 recover = clamp_val(t.recover, 4, 15);
351 iowrite8(recover << 4 | active, ap->ioaddr.device_addr);
352 ioread8(ap->ioaddr.status_addr);
355 static struct ata_port_operations ht6560a_port_ops = {
356 .inherits = &legacy_base_port_ops,
357 .set_piomode = ht6560a_set_piomode,
361 * Holtek 6560B support
363 * This controller supports PIO0 to PIO4. We honour the BIOS/jumper FIFO
364 * setting unless we see an ATAPI device in which case we force it off.
366 * FIXME: need to implement 2nd channel support.
369 static void ht6560b_set_piomode(struct ata_port *ap, struct ata_device *adev)
374 /* Get the timing data in cycles. For now play safe at 50Mhz */
375 ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
377 active = clamp_val(t.active, 2, 15);
378 recover = clamp_val(t.recover, 2, 16);
386 iowrite8(recover << 4 | active, ap->ioaddr.device_addr);
388 if (adev->class != ATA_DEV_ATA) {
389 u8 rconf = inb(0x3E6);
395 ioread8(ap->ioaddr.status_addr);
398 static struct ata_port_operations ht6560b_port_ops = {
399 .inherits = &legacy_base_port_ops,
400 .set_piomode = ht6560b_set_piomode,
404 * Opti core chipset helpers
408 * opti_syscfg - read OPTI chipset configuration
409 * @reg: Configuration register to read
411 * Returns the value of an OPTI system board configuration register.
414 static u8 opti_syscfg(u8 reg)
419 /* Uniprocessor chipset and must force cycles adjancent */
420 local_irq_save(flags);
423 local_irq_restore(flags);
430 * This controller supports PIO0 to PIO3.
433 static void opti82c611a_set_piomode(struct ata_port *ap,
434 struct ata_device *adev)
436 u8 active, recover, setup;
438 struct ata_device *pair = ata_dev_pair(adev);
440 int khz[4] = { 50000, 40000, 33000, 25000 };
443 /* Enter configuration mode */
444 ioread16(ap->ioaddr.error_addr);
445 ioread16(ap->ioaddr.error_addr);
446 iowrite8(3, ap->ioaddr.nsect_addr);
448 /* Read VLB clock strapping */
449 clock = 1000000000 / khz[ioread8(ap->ioaddr.lbah_addr) & 0x03];
451 /* Get the timing data in cycles */
452 ata_timing_compute(adev, adev->pio_mode, &t, clock, 1000);
454 /* Setup timing is shared */
456 struct ata_timing tp;
457 ata_timing_compute(pair, pair->pio_mode, &tp, clock, 1000);
459 ata_timing_merge(&t, &tp, &t, ATA_TIMING_SETUP);
462 active = clamp_val(t.active, 2, 17) - 2;
463 recover = clamp_val(t.recover, 1, 16) - 1;
464 setup = clamp_val(t.setup, 1, 4) - 1;
466 /* Select the right timing bank for write timing */
467 rc = ioread8(ap->ioaddr.lbal_addr);
469 rc |= (adev->devno << 7);
470 iowrite8(rc, ap->ioaddr.lbal_addr);
472 /* Write the timings */
473 iowrite8(active << 4 | recover, ap->ioaddr.error_addr);
475 /* Select the right bank for read timings, also
476 load the shared timings for address */
477 rc = ioread8(ap->ioaddr.device_addr);
479 rc |= adev->devno; /* Index select */
480 rc |= (setup << 4) | 0x04;
481 iowrite8(rc, ap->ioaddr.device_addr);
483 /* Load the read timings */
484 iowrite8(active << 4 | recover, ap->ioaddr.data_addr);
486 /* Ensure the timing register mode is right */
487 rc = ioread8(ap->ioaddr.lbal_addr);
490 iowrite8(rc, ap->ioaddr.lbal_addr);
492 /* Exit command mode */
493 iowrite8(0x83, ap->ioaddr.nsect_addr);
497 static struct ata_port_operations opti82c611a_port_ops = {
498 .inherits = &legacy_base_port_ops,
499 .set_piomode = opti82c611a_set_piomode,
505 * This controller supports PIO0 to PIO3. Unlike the 611A the MVB
506 * version is dual channel but doesn't have a lot of unique registers.
509 static void opti82c46x_set_piomode(struct ata_port *ap, struct ata_device *adev)
511 u8 active, recover, setup;
513 struct ata_device *pair = ata_dev_pair(adev);
515 int khz[4] = { 50000, 40000, 33000, 25000 };
520 sysclk = opti_syscfg(0xAC) & 0xC0; /* BIOS set */
522 /* Enter configuration mode */
523 ioread16(ap->ioaddr.error_addr);
524 ioread16(ap->ioaddr.error_addr);
525 iowrite8(3, ap->ioaddr.nsect_addr);
527 /* Read VLB clock strapping */
528 clock = 1000000000 / khz[sysclk];
530 /* Get the timing data in cycles */
531 ata_timing_compute(adev, adev->pio_mode, &t, clock, 1000);
533 /* Setup timing is shared */
535 struct ata_timing tp;
536 ata_timing_compute(pair, pair->pio_mode, &tp, clock, 1000);
538 ata_timing_merge(&t, &tp, &t, ATA_TIMING_SETUP);
541 active = clamp_val(t.active, 2, 17) - 2;
542 recover = clamp_val(t.recover, 1, 16) - 1;
543 setup = clamp_val(t.setup, 1, 4) - 1;
545 /* Select the right timing bank for write timing */
546 rc = ioread8(ap->ioaddr.lbal_addr);
548 rc |= (adev->devno << 7);
549 iowrite8(rc, ap->ioaddr.lbal_addr);
551 /* Write the timings */
552 iowrite8(active << 4 | recover, ap->ioaddr.error_addr);
554 /* Select the right bank for read timings, also
555 load the shared timings for address */
556 rc = ioread8(ap->ioaddr.device_addr);
558 rc |= adev->devno; /* Index select */
559 rc |= (setup << 4) | 0x04;
560 iowrite8(rc, ap->ioaddr.device_addr);
562 /* Load the read timings */
563 iowrite8(active << 4 | recover, ap->ioaddr.data_addr);
565 /* Ensure the timing register mode is right */
566 rc = ioread8(ap->ioaddr.lbal_addr);
569 iowrite8(rc, ap->ioaddr.lbal_addr);
571 /* Exit command mode */
572 iowrite8(0x83, ap->ioaddr.nsect_addr);
574 /* We need to know this for quad device on the MVB */
575 ap->host->private_data = ap;
579 * opt82c465mv_qc_issue - command issue
580 * @qc: command pending
582 * Called when the libata layer is about to issue a command. We wrap
583 * this interface so that we can load the correct ATA timings. The
584 * MVB has a single set of timing registers and these are shared
585 * across channels. As there are two registers we really ought to
586 * track the last two used values as a sort of register window. For
587 * now we just reload on a channel switch. On the single channel
588 * setup this condition never fires so we do nothing extra.
590 * FIXME: dual channel needs ->serialize support
593 static unsigned int opti82c46x_qc_issue(struct ata_queued_cmd *qc)
595 struct ata_port *ap = qc->ap;
596 struct ata_device *adev = qc->dev;
598 /* If timings are set and for the wrong channel (2nd test is
599 due to a libata shortcoming and will eventually go I hope) */
600 if (ap->host->private_data != ap->host
601 && ap->host->private_data != NULL)
602 opti82c46x_set_piomode(ap, adev);
604 return ata_sff_qc_issue(qc);
607 static struct ata_port_operations opti82c46x_port_ops = {
608 .inherits = &legacy_base_port_ops,
609 .set_piomode = opti82c46x_set_piomode,
610 .qc_issue = opti82c46x_qc_issue,
613 static void qdi6500_set_piomode(struct ata_port *ap, struct ata_device *adev)
616 struct legacy_data *ld_qdi = ap->host->private_data;
617 int active, recovery;
620 /* Get the timing data in cycles */
621 ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
624 active = 8 - clamp_val(t.active, 1, 8);
625 recovery = 18 - clamp_val(t.recover, 3, 18);
627 active = 9 - clamp_val(t.active, 2, 9);
628 recovery = 15 - clamp_val(t.recover, 0, 15);
630 timing = (recovery << 4) | active | 0x08;
632 ld_qdi->clock[adev->devno] = timing;
634 outb(timing, ld_qdi->timing);
638 * qdi6580dp_set_piomode - PIO setup for dual channel
642 * In dual channel mode the 6580 has one clock per channel and we have
643 * to software clockswitch in qc_issue.
646 static void qdi6580dp_set_piomode(struct ata_port *ap, struct ata_device *adev)
649 struct legacy_data *ld_qdi = ap->host->private_data;
650 int active, recovery;
653 /* Get the timing data in cycles */
654 ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
657 active = 8 - clamp_val(t.active, 1, 8);
658 recovery = 18 - clamp_val(t.recover, 3, 18);
660 active = 9 - clamp_val(t.active, 2, 9);
661 recovery = 15 - clamp_val(t.recover, 0, 15);
663 timing = (recovery << 4) | active | 0x08;
665 ld_qdi->clock[adev->devno] = timing;
667 outb(timing, ld_qdi->timing + 2 * ap->port_no);
669 if (adev->class != ATA_DEV_ATA)
670 outb(0x5F, ld_qdi->timing + 3);
674 * qdi6580_set_piomode - PIO setup for single channel
678 * In single channel mode the 6580 has one clock per device and we can
679 * avoid the requirement to clock switch. We also have to load the timing
680 * into the right clock according to whether we are master or slave.
683 static void qdi6580_set_piomode(struct ata_port *ap, struct ata_device *adev)
686 struct legacy_data *ld_qdi = ap->host->private_data;
687 int active, recovery;
690 /* Get the timing data in cycles */
691 ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
694 active = 8 - clamp_val(t.active, 1, 8);
695 recovery = 18 - clamp_val(t.recover, 3, 18);
697 active = 9 - clamp_val(t.active, 2, 9);
698 recovery = 15 - clamp_val(t.recover, 0, 15);
700 timing = (recovery << 4) | active | 0x08;
701 ld_qdi->clock[adev->devno] = timing;
702 outb(timing, ld_qdi->timing + 2 * adev->devno);
704 if (adev->class != ATA_DEV_ATA)
705 outb(0x5F, ld_qdi->timing + 3);
709 * qdi_qc_issue - command issue
710 * @qc: command pending
712 * Called when the libata layer is about to issue a command. We wrap
713 * this interface so that we can load the correct ATA timings.
716 static unsigned int qdi_qc_issue(struct ata_queued_cmd *qc)
718 struct ata_port *ap = qc->ap;
719 struct ata_device *adev = qc->dev;
720 struct legacy_data *ld_qdi = ap->host->private_data;
722 if (ld_qdi->clock[adev->devno] != ld_qdi->last) {
723 if (adev->pio_mode) {
724 ld_qdi->last = ld_qdi->clock[adev->devno];
725 outb(ld_qdi->clock[adev->devno], ld_qdi->timing +
729 return ata_sff_qc_issue(qc);
732 static unsigned int vlb32_data_xfer(struct ata_device *adev, unsigned char *buf,
733 unsigned int buflen, int rw)
735 struct ata_port *ap = adev->link->ap;
736 int slop = buflen & 3;
738 if (ata_id_has_dword_io(adev->id)) {
740 iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
742 ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
744 if (unlikely(slop)) {
747 memcpy(&pad, buf + buflen - slop, slop);
748 iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr);
750 pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr));
751 memcpy(buf + buflen - slop, &pad, slop);
754 return (buflen + 3) & ~3;
756 return ata_sff_data_xfer(adev, buf, buflen, rw);
759 static int qdi_port(struct platform_device *dev,
760 struct legacy_probe *lp, struct legacy_data *ld)
762 if (devm_request_region(&dev->dev, lp->private, 4, "qdi") == NULL)
764 ld->timing = lp->private;
768 static struct ata_port_operations qdi6500_port_ops = {
769 .inherits = &legacy_base_port_ops,
770 .set_piomode = qdi6500_set_piomode,
771 .qc_issue = qdi_qc_issue,
772 .sff_data_xfer = vlb32_data_xfer,
775 static struct ata_port_operations qdi6580_port_ops = {
776 .inherits = &legacy_base_port_ops,
777 .set_piomode = qdi6580_set_piomode,
778 .sff_data_xfer = vlb32_data_xfer,
781 static struct ata_port_operations qdi6580dp_port_ops = {
782 .inherits = &legacy_base_port_ops,
783 .set_piomode = qdi6580dp_set_piomode,
784 .sff_data_xfer = vlb32_data_xfer,
787 static DEFINE_SPINLOCK(winbond_lock);
789 static void winbond_writecfg(unsigned long port, u8 reg, u8 val)
792 spin_lock_irqsave(&winbond_lock, flags);
793 outb(reg, port + 0x01);
794 outb(val, port + 0x02);
795 spin_unlock_irqrestore(&winbond_lock, flags);
798 static u8 winbond_readcfg(unsigned long port, u8 reg)
803 spin_lock_irqsave(&winbond_lock, flags);
804 outb(reg, port + 0x01);
805 val = inb(port + 0x02);
806 spin_unlock_irqrestore(&winbond_lock, flags);
811 static void winbond_set_piomode(struct ata_port *ap, struct ata_device *adev)
814 struct legacy_data *ld_winbond = ap->host->private_data;
815 int active, recovery;
817 int timing = 0x88 + (ap->port_no * 4) + (adev->devno * 2);
819 reg = winbond_readcfg(ld_winbond->timing, 0x81);
821 /* Get the timing data in cycles */
822 if (reg & 0x40) /* Fast VLB bus, assume 50MHz */
823 ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
825 ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
827 active = (clamp_val(t.active, 3, 17) - 1) & 0x0F;
828 recovery = (clamp_val(t.recover, 1, 15) + 1) & 0x0F;
829 timing = (active << 4) | recovery;
830 winbond_writecfg(ld_winbond->timing, timing, reg);
832 /* Load the setup timing */
835 if (adev->class != ATA_DEV_ATA)
836 reg |= 0x08; /* FIFO off */
837 if (!ata_pio_need_iordy(adev))
838 reg |= 0x02; /* IORDY off */
839 reg |= (clamp_val(t.setup, 0, 3) << 6);
840 winbond_writecfg(ld_winbond->timing, timing + 1, reg);
843 static int winbond_port(struct platform_device *dev,
844 struct legacy_probe *lp, struct legacy_data *ld)
846 if (devm_request_region(&dev->dev, lp->private, 4, "winbond") == NULL)
848 ld->timing = lp->private;
852 static struct ata_port_operations winbond_port_ops = {
853 .inherits = &legacy_base_port_ops,
854 .set_piomode = winbond_set_piomode,
855 .sff_data_xfer = vlb32_data_xfer,
858 static struct legacy_controller controllers[] = {
859 {"BIOS", &legacy_port_ops, 0x1F,
860 ATA_FLAG_NO_IORDY, NULL },
861 {"Snooping", &simple_port_ops, 0x1F,
863 {"PDC20230", &pdc20230_port_ops, 0x7,
864 ATA_FLAG_NO_IORDY, NULL },
865 {"HT6560A", &ht6560a_port_ops, 0x07,
866 ATA_FLAG_NO_IORDY, NULL },
867 {"HT6560B", &ht6560b_port_ops, 0x1F,
868 ATA_FLAG_NO_IORDY, NULL },
869 {"OPTI82C611A", &opti82c611a_port_ops, 0x0F,
871 {"OPTI82C46X", &opti82c46x_port_ops, 0x0F,
873 {"QDI6500", &qdi6500_port_ops, 0x07,
874 ATA_FLAG_NO_IORDY, qdi_port },
875 {"QDI6580", &qdi6580_port_ops, 0x1F,
877 {"QDI6580DP", &qdi6580dp_port_ops, 0x1F,
879 {"W83759A", &winbond_port_ops, 0x1F,
884 * probe_chip_type - Discover controller
885 * @probe: Probe entry to check
887 * Probe an ATA port and identify the type of controller. We don't
888 * check if the controller appears to be driveless at this point.
891 static __init int probe_chip_type(struct legacy_probe *probe)
893 int mask = 1 << probe->slot;
895 if (winbond && (probe->port == 0x1F0 || probe->port == 0x170)) {
896 u8 reg = winbond_readcfg(winbond, 0x81);
897 reg |= 0x80; /* jumpered mode off */
898 winbond_writecfg(winbond, 0x81, reg);
899 reg = winbond_readcfg(winbond, 0x83);
900 reg |= 0xF0; /* local control */
901 winbond_writecfg(winbond, 0x83, reg);
902 reg = winbond_readcfg(winbond, 0x85);
903 reg |= 0xF0; /* programmable timing */
904 winbond_writecfg(winbond, 0x85, reg);
906 reg = winbond_readcfg(winbond, 0x81);
911 if (probe->port == 0x1F0) {
913 local_irq_save(flags);
915 outb(inb(0x1F2) | 0x80, 0x1F2);
923 if ((inb(0x1F2) & 0x80) == 0) {
924 /* PDC20230c or 20630 ? */
925 printk(KERN_INFO "PDC20230-C/20630 VLB ATA controller"
929 local_irq_restore(flags);
935 if (inb(0x1F2) == 0x00)
936 printk(KERN_INFO "PDC20230-B VLB ATA "
937 "controller detected.\n");
938 local_irq_restore(flags);
941 local_irq_restore(flags);
948 if (opti82c611a & mask)
950 if (opti82c46x & mask)
952 if (autospeed & mask)
959 * legacy_init_one - attach a legacy interface
962 * Register an ISA bus IDE interface. Such interfaces are PIO and we
963 * assume do not support IRQ sharing.
966 static __init int legacy_init_one(struct legacy_probe *probe)
968 struct legacy_controller *controller = &controllers[probe->type];
969 int pio_modes = controller->pio_mask;
970 unsigned long io = probe->port;
971 u32 mask = (1 << probe->slot);
972 struct ata_port_operations *ops = controller->ops;
973 struct legacy_data *ld = &legacy_data[probe->slot];
974 struct ata_host *host = NULL;
976 struct platform_device *pdev;
977 struct ata_device *dev;
978 void __iomem *io_addr, *ctrl_addr;
979 u32 iordy = (iordy_mask & mask) ? 0: ATA_FLAG_NO_IORDY;
982 iordy |= controller->flags;
984 pdev = platform_device_register_simple(DRV_NAME, probe->slot, NULL, 0);
986 return PTR_ERR(pdev);
989 if (devm_request_region(&pdev->dev, io, 8, "pata_legacy") == NULL ||
990 devm_request_region(&pdev->dev, io + 0x0206, 1,
991 "pata_legacy") == NULL)
995 io_addr = devm_ioport_map(&pdev->dev, io, 8);
996 ctrl_addr = devm_ioport_map(&pdev->dev, io + 0x0206, 1);
997 if (!io_addr || !ctrl_addr)
999 if (controller->setup)
1000 if (controller->setup(pdev, probe, ld) < 0)
1002 host = ata_host_alloc(&pdev->dev, 1);
1005 ap = host->ports[0];
1008 ap->pio_mask = pio_modes;
1009 ap->flags |= ATA_FLAG_SLAVE_POSS | iordy;
1010 ap->ioaddr.cmd_addr = io_addr;
1011 ap->ioaddr.altstatus_addr = ctrl_addr;
1012 ap->ioaddr.ctl_addr = ctrl_addr;
1013 ata_sff_std_ports(&ap->ioaddr);
1014 ap->host->private_data = ld;
1016 ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", io, io + 0x0206);
1018 ret = ata_host_activate(host, probe->irq, ata_sff_interrupt, 0,
1022 ld->platform_dev = pdev;
1024 /* Nothing found means we drop the port as its probably not there */
1027 ata_for_each_dev(dev, &ap->link, ALL) {
1028 if (!ata_dev_absent(dev)) {
1029 legacy_host[probe->slot] = host;
1030 ld->platform_dev = pdev;
1035 platform_device_unregister(pdev);
1040 * legacy_check_special_cases - ATA special cases
1041 * @p: PCI device to check
1042 * @master: set this if we find an ATA master
1043 * @master: set this if we find an ATA secondary
1045 * A small number of vendors implemented early PCI ATA interfaces
1046 * on bridge logic without the ATA interface being PCI visible.
1047 * Where we have a matching PCI driver we must skip the relevant
1048 * device here. If we don't know about it then the legacy driver
1049 * is the right driver anyway.
1052 static void __init legacy_check_special_cases(struct pci_dev *p, int *primary,
1055 /* Cyrix CS5510 pre SFF MWDMA ATA on the bridge */
1056 if (p->vendor == 0x1078 && p->device == 0x0000) {
1057 *primary = *secondary = 1;
1060 /* Cyrix CS5520 pre SFF MWDMA ATA on the bridge */
1061 if (p->vendor == 0x1078 && p->device == 0x0002) {
1062 *primary = *secondary = 1;
1065 /* Intel MPIIX - PIO ATA on non PCI side of bridge */
1066 if (p->vendor == 0x8086 && p->device == 0x1234) {
1068 pci_read_config_word(p, 0x6C, &r);
1070 /* ATA port enabled */
1080 static __init void probe_opti_vlb(void)
1082 /* If an OPTI 82C46X is present find out where the channels are */
1083 static const char *optis[4] = {
1088 u8 ctrl = (opti_syscfg(0x30) & 0xC0) >> 6;
1090 opti82c46x = 3; /* Assume master and slave first */
1091 printk(KERN_INFO DRV_NAME ": Opti 82C46%s chipset support.\n",
1094 chans = (opti_syscfg(0x3F) & 0x20) ? 2 : 1;
1095 ctrl = opti_syscfg(0xAC);
1096 /* Check enabled and this port is the 465MV port. On the
1097 MVB we may have two channels */
1100 legacy_probe_add(0x1F0, 14, OPTI46X, 0);
1101 legacy_probe_add(0x170, 15, OPTI46X, 0);
1104 legacy_probe_add(0x170, 15, OPTI46X, 0);
1106 legacy_probe_add(0x1F0, 14, OPTI46X, 0);
1108 legacy_probe_add(0x1F0, 14, OPTI46X, 0);
1111 static __init void qdi65_identify_port(u8 r, u8 res, unsigned long port)
1113 static const unsigned long ide_port[2] = { 0x170, 0x1F0 };
1114 /* Check card type */
1115 if ((r & 0xF0) == 0xC0) {
1116 /* QD6500: single channel */
1120 legacy_probe_add(ide_port[r & 0x01], 14 + (r & 0x01),
1123 if (((r & 0xF0) == 0xA0) || (r & 0xF0) == 0x50) {
1124 /* QD6580: dual channel */
1125 if (!request_region(port + 2 , 2, "pata_qdi")) {
1126 release_region(port, 2);
1129 res = inb(port + 3);
1130 /* Single channel mode ? */
1132 legacy_probe_add(ide_port[r & 0x01], 14 + (r & 0x01),
1134 else { /* Dual channel mode */
1135 legacy_probe_add(0x1F0, 14, QDI6580DP, port);
1136 /* port + 0x02, r & 0x04 */
1137 legacy_probe_add(0x170, 15, QDI6580DP, port + 2);
1139 release_region(port + 2, 2);
1143 static __init void probe_qdi_vlb(void)
1145 unsigned long flags;
1146 static const unsigned long qd_port[2] = { 0x30, 0xB0 };
1150 * Check each possible QD65xx base address
1153 for (i = 0; i < 2; i++) {
1154 unsigned long port = qd_port[i];
1158 if (request_region(port, 2, "pata_qdi")) {
1159 /* Check for a card */
1160 local_irq_save(flags);
1161 /* I have no h/w that needs this delay but it
1162 is present in the historic code */
1171 local_irq_restore(flags);
1175 release_region(port, 2);
1178 /* Passes the presence test */
1181 /* Check port agrees with port set */
1182 if ((r & 2) >> 1 == i)
1183 qdi65_identify_port(r, res, port);
1184 release_region(port, 2);
1190 * legacy_init - attach legacy interfaces
1192 * Attach legacy IDE interfaces by scanning the usual IRQ/port suspects.
1193 * Right now we do not scan the ide0 and ide1 address but should do so
1194 * for non PCI systems or systems with no PCI IDE legacy mode devices.
1195 * If you fix that note there are special cases to consider like VLB
1196 * drivers and CS5510/20.
1199 static __init int legacy_init(void)
1205 int pci_present = 0;
1206 struct legacy_probe *pl = &probe_list[0];
1209 struct pci_dev *p = NULL;
1211 for_each_pci_dev(p) {
1213 /* Check for any overlap of the system ATA mappings. Native
1214 mode controllers stuck on these addresses or some devices
1215 in 'raid' mode won't be found by the storage class test */
1216 for (r = 0; r < 6; r++) {
1217 if (pci_resource_start(p, r) == 0x1f0)
1219 if (pci_resource_start(p, r) == 0x170)
1222 /* Check for special cases */
1223 legacy_check_special_cases(p, &primary, &secondary);
1225 /* If PCI bus is present then don't probe for tertiary
1231 winbond = 0x130; /* Default port, alt is 1B0 */
1233 if (primary == 0 || all)
1234 legacy_probe_add(0x1F0, 14, UNKNOWN, 0);
1235 if (secondary == 0 || all)
1236 legacy_probe_add(0x170, 15, UNKNOWN, 0);
1238 if (probe_all || !pci_present) {
1239 /* ISA/VLB extra ports */
1240 legacy_probe_add(0x1E8, 11, UNKNOWN, 0);
1241 legacy_probe_add(0x168, 10, UNKNOWN, 0);
1242 legacy_probe_add(0x1E0, 8, UNKNOWN, 0);
1243 legacy_probe_add(0x160, 12, UNKNOWN, 0);
1251 for (i = 0; i < NR_HOST; i++, pl++) {
1254 if (pl->type == UNKNOWN)
1255 pl->type = probe_chip_type(pl);
1257 if (legacy_init_one(pl) == 0)
1265 static __exit void legacy_exit(void)
1269 for (i = 0; i < nr_legacy_host; i++) {
1270 struct legacy_data *ld = &legacy_data[i];
1271 ata_host_detach(legacy_host[i]);
1272 platform_device_unregister(ld->platform_dev);
1276 MODULE_AUTHOR("Alan Cox");
1277 MODULE_DESCRIPTION("low-level driver for legacy ATA");
1278 MODULE_LICENSE("GPL");
1279 MODULE_VERSION(DRV_VERSION);
1281 module_param(probe_all, int, 0);
1282 module_param(autospeed, int, 0);
1283 module_param(ht6560a, int, 0);
1284 module_param(ht6560b, int, 0);
1285 module_param(opti82c611a, int, 0);
1286 module_param(opti82c46x, int, 0);
1287 module_param(qdi, int, 0);
1288 module_param(pio_mask, int, 0);
1289 module_param(iordy_mask, int, 0);
1291 module_init(legacy_init);
1292 module_exit(legacy_exit);