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 * http://www.ryston.cz/petr/vlb/qd6500.html
30 * http://www.ryston.cz/petr/vlb/qd6580.html
32 * QDI65x0 probe code based on drivers/ide/legacy/qd65xx.c
33 * Rewritten from the work of Colten Edwards <pje120@cs.usask.ca> by
34 * Samuel Thibault <samuel.thibault@ens-lyon.org>
36 * Unsupported but docs exist:
37 * Appian/Adaptec AIC25VL01/Cirrus Logic PD7220
39 * This driver handles legacy (that is "ISA/VLB side") IDE ports found
40 * on PC class systems. There are three hybrid devices that are exceptions
41 * The Cyrix 5510/5520 where a pre SFF ATA device is on the bridge and
42 * the MPIIX where the tuning is PCI side but the IDE is "ISA side".
44 * Specific support is included for the ht6560a/ht6560b/opti82c611a/
45 * opti82c465mv/promise 20230c/20630/qdi65x0/winbond83759A
47 * Support for the Winbond 83759A when operating in advanced mode.
48 * Multichip mode is not currently supported.
50 * Use the autospeed and pio_mask options with:
51 * Appian ADI/2 aka CLPD7220 or AIC25VL01.
52 * Use the jumpers, autospeed and set pio_mask to the mode on the jumpers with
53 * Goldstar GM82C711, PIC-1288A-125, UMC 82C871F, Winbond W83759,
54 * Winbond W83759A, Promise PDC20230-B
56 * For now use autospeed and pio_mask as above with the W83759A. This may
61 #include <linux/async.h>
62 #include <linux/kernel.h>
63 #include <linux/module.h>
64 #include <linux/pci.h>
65 #include <linux/init.h>
66 #include <linux/blkdev.h>
67 #include <linux/delay.h>
68 #include <scsi/scsi_host.h>
69 #include <linux/ata.h>
70 #include <linux/libata.h>
71 #include <linux/platform_device.h>
73 #define DRV_NAME "pata_legacy"
74 #define DRV_VERSION "0.6.5"
79 module_param(all, int, 0444);
80 MODULE_PARM_DESC(all, "Grab all legacy port devices, even if PCI(0=off, 1=on)");
92 QDI6580DP = 9, /* Dual channel mode is different */
103 enum controller type;
104 struct platform_device *platform_dev;
107 struct legacy_probe {
112 enum controller type;
113 unsigned long private;
116 struct legacy_controller {
118 struct ata_port_operations *ops;
119 unsigned int pio_mask;
122 int (*setup)(struct platform_device *, struct legacy_probe *probe,
123 struct legacy_data *data);
126 static int legacy_port[NR_HOST] = { 0x1f0, 0x170, 0x1e8, 0x168, 0x1e0, 0x160 };
128 static struct legacy_probe probe_list[NR_HOST];
129 static struct legacy_data legacy_data[NR_HOST];
130 static struct ata_host *legacy_host[NR_HOST];
131 static int nr_legacy_host;
134 static int probe_all; /* Set to check all ISA port ranges */
135 static int ht6560a; /* HT 6560A on primary 1, second 2, both 3 */
136 static int ht6560b; /* HT 6560A on primary 1, second 2, both 3 */
137 static int opti82c611a; /* Opti82c611A on primary 1, sec 2, both 3 */
138 static int opti82c46x; /* Opti 82c465MV present(pri/sec autodetect) */
139 static int autospeed; /* Chip present which snoops speed changes */
140 static int pio_mask = ATA_PIO4; /* PIO range for autospeed devices */
141 static int iordy_mask = 0xFFFFFFFF; /* Use iordy if available */
143 /* Set to probe QDI controllers */
144 #ifdef CONFIG_PATA_QDI_MODULE
150 #ifdef CONFIG_PATA_WINBOND_VLB_MODULE
151 static int winbond = 1; /* Set to probe Winbond controllers,
152 give I/O port if non standard */
154 static int winbond; /* Set to probe Winbond controllers,
155 give I/O port if non standard */
159 * legacy_probe_add - Add interface to probe list
160 * @port: Controller port
162 * @type: Controller type
163 * @private: Controller specific info
165 * Add an entry into the probe list for ATA controllers. This is used
166 * to add the default ISA slots and then to build up the table
167 * further according to other ISA/VLB/Weird device scans
169 * An I/O port list is used to keep ordering stable and sane, as we
170 * don't have any good way to talk about ordering otherwise
173 static int legacy_probe_add(unsigned long port, unsigned int irq,
174 enum controller type, unsigned long private)
176 struct legacy_probe *lp = &probe_list[0];
178 struct legacy_probe *free = NULL;
180 for (i = 0; i < NR_HOST; i++) {
181 if (lp->port == 0 && free == NULL)
183 /* Matching port, or the correct slot for ordering */
184 if (lp->port == port || legacy_port[i] == port) {
191 printk(KERN_ERR "pata_legacy: Too many interfaces.\n");
194 /* Fill in the entry for later probing */
198 free->private = private;
204 * legacy_set_mode - mode setting
206 * @unused: Device that failed when error is returned
208 * Use a non standard set_mode function. We don't want to be tuned.
210 * The BIOS configured everything. Our job is not to fiddle. Just use
211 * whatever PIO the hardware is using and leave it at that. When we
212 * get some kind of nice user driven API for control then we can
213 * expand on this as per hdparm in the base kernel.
216 static int legacy_set_mode(struct ata_link *link, struct ata_device **unused)
218 struct ata_device *dev;
220 ata_for_each_dev(dev, link, ENABLED) {
221 ata_dev_info(dev, "configured for PIO\n");
222 dev->pio_mode = XFER_PIO_0;
223 dev->xfer_mode = XFER_PIO_0;
224 dev->xfer_shift = ATA_SHIFT_PIO;
225 dev->flags |= ATA_DFLAG_PIO;
230 static struct scsi_host_template legacy_sht = {
231 ATA_PIO_SHT(DRV_NAME),
234 static const struct ata_port_operations legacy_base_port_ops = {
235 .inherits = &ata_sff_port_ops,
236 .cable_detect = ata_cable_40wire,
240 * These ops are used if the user indicates the hardware
241 * snoops the commands to decide on the mode and handles the
242 * mode selection "magically" itself. Several legacy controllers
243 * do this. The mode range can be set if it is not 0x1F by setting
247 static struct ata_port_operations simple_port_ops = {
248 .inherits = &legacy_base_port_ops,
249 .sff_data_xfer = ata_sff_data_xfer_noirq,
252 static struct ata_port_operations legacy_port_ops = {
253 .inherits = &legacy_base_port_ops,
254 .sff_data_xfer = ata_sff_data_xfer_noirq,
255 .set_mode = legacy_set_mode,
259 * Promise 20230C and 20620 support
261 * This controller supports PIO0 to PIO2. We set PIO timings
262 * conservatively to allow for 50MHz Vesa Local Bus. The 20620 DMA
263 * support is weird being DMA to controller and PIO'd to the host
267 static void pdc20230_set_piomode(struct ata_port *ap, struct ata_device *adev)
270 int pio = adev->pio_mode - XFER_PIO_0;
274 /* Safe as UP only. Force I/Os to occur together */
276 local_irq_save(flags);
278 /* Unlock the control interface */
281 outb(inb(0x1F2) | 0x80, 0x1F2);
288 while ((inb(0x1F2) & 0x80) && --tries);
290 local_irq_restore(flags);
292 outb(inb(0x1F4) & 0x07, 0x1F4);
295 rt &= 0x07 << (3 * adev->devno);
297 rt |= (1 + 3 * pio) << (3 * adev->devno);
300 outb(inb(0x1F2) | 0x01, 0x1F2);
306 static unsigned int pdc_data_xfer_vlb(struct ata_device *dev,
307 unsigned char *buf, unsigned int buflen, int rw)
309 int slop = buflen & 3;
310 struct ata_port *ap = dev->link->ap;
312 /* 32bit I/O capable *and* we need to write a whole number of dwords */
313 if (ata_id_has_dword_io(dev->id) && (slop == 0 || slop == 3)
314 && (ap->pflags & ATA_PFLAG_PIO32)) {
317 local_irq_save(flags);
319 /* Perform the 32bit I/O synchronization sequence */
320 ioread8(ap->ioaddr.nsect_addr);
321 ioread8(ap->ioaddr.nsect_addr);
322 ioread8(ap->ioaddr.nsect_addr);
326 ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
328 iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
330 if (unlikely(slop)) {
333 pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr));
334 memcpy(buf + buflen - slop, &pad, slop);
336 memcpy(&pad, buf + buflen - slop, slop);
337 iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr);
341 local_irq_restore(flags);
343 buflen = ata_sff_data_xfer_noirq(dev, buf, buflen, rw);
348 static struct ata_port_operations pdc20230_port_ops = {
349 .inherits = &legacy_base_port_ops,
350 .set_piomode = pdc20230_set_piomode,
351 .sff_data_xfer = pdc_data_xfer_vlb,
355 * Holtek 6560A support
357 * This controller supports PIO0 to PIO2 (no IORDY even though higher
358 * timings can be loaded).
361 static void ht6560a_set_piomode(struct ata_port *ap, struct ata_device *adev)
366 /* Get the timing data in cycles. For now play safe at 50Mhz */
367 ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
369 active = clamp_val(t.active, 2, 15);
370 recover = clamp_val(t.recover, 4, 15);
377 iowrite8(recover << 4 | active, ap->ioaddr.device_addr);
378 ioread8(ap->ioaddr.status_addr);
381 static struct ata_port_operations ht6560a_port_ops = {
382 .inherits = &legacy_base_port_ops,
383 .set_piomode = ht6560a_set_piomode,
387 * Holtek 6560B support
389 * This controller supports PIO0 to PIO4. We honour the BIOS/jumper FIFO
390 * setting unless we see an ATAPI device in which case we force it off.
392 * FIXME: need to implement 2nd channel support.
395 static void ht6560b_set_piomode(struct ata_port *ap, struct ata_device *adev)
400 /* Get the timing data in cycles. For now play safe at 50Mhz */
401 ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
403 active = clamp_val(t.active, 2, 15);
404 recover = clamp_val(t.recover, 2, 16) & 0x0F;
411 iowrite8(recover << 4 | active, ap->ioaddr.device_addr);
413 if (adev->class != ATA_DEV_ATA) {
414 u8 rconf = inb(0x3E6);
420 ioread8(ap->ioaddr.status_addr);
423 static struct ata_port_operations ht6560b_port_ops = {
424 .inherits = &legacy_base_port_ops,
425 .set_piomode = ht6560b_set_piomode,
429 * Opti core chipset helpers
433 * opti_syscfg - read OPTI chipset configuration
434 * @reg: Configuration register to read
436 * Returns the value of an OPTI system board configuration register.
439 static u8 opti_syscfg(u8 reg)
444 /* Uniprocessor chipset and must force cycles adjancent */
445 local_irq_save(flags);
448 local_irq_restore(flags);
455 * This controller supports PIO0 to PIO3.
458 static void opti82c611a_set_piomode(struct ata_port *ap,
459 struct ata_device *adev)
461 u8 active, recover, setup;
463 struct ata_device *pair = ata_dev_pair(adev);
465 int khz[4] = { 50000, 40000, 33000, 25000 };
468 /* Enter configuration mode */
469 ioread16(ap->ioaddr.error_addr);
470 ioread16(ap->ioaddr.error_addr);
471 iowrite8(3, ap->ioaddr.nsect_addr);
473 /* Read VLB clock strapping */
474 clock = 1000000000 / khz[ioread8(ap->ioaddr.lbah_addr) & 0x03];
476 /* Get the timing data in cycles */
477 ata_timing_compute(adev, adev->pio_mode, &t, clock, 1000);
479 /* Setup timing is shared */
481 struct ata_timing tp;
482 ata_timing_compute(pair, pair->pio_mode, &tp, clock, 1000);
484 ata_timing_merge(&t, &tp, &t, ATA_TIMING_SETUP);
487 active = clamp_val(t.active, 2, 17) - 2;
488 recover = clamp_val(t.recover, 1, 16) - 1;
489 setup = clamp_val(t.setup, 1, 4) - 1;
491 /* Select the right timing bank for write timing */
492 rc = ioread8(ap->ioaddr.lbal_addr);
494 rc |= (adev->devno << 7);
495 iowrite8(rc, ap->ioaddr.lbal_addr);
497 /* Write the timings */
498 iowrite8(active << 4 | recover, ap->ioaddr.error_addr);
500 /* Select the right bank for read timings, also
501 load the shared timings for address */
502 rc = ioread8(ap->ioaddr.device_addr);
504 rc |= adev->devno; /* Index select */
505 rc |= (setup << 4) | 0x04;
506 iowrite8(rc, ap->ioaddr.device_addr);
508 /* Load the read timings */
509 iowrite8(active << 4 | recover, ap->ioaddr.data_addr);
511 /* Ensure the timing register mode is right */
512 rc = ioread8(ap->ioaddr.lbal_addr);
515 iowrite8(rc, ap->ioaddr.lbal_addr);
517 /* Exit command mode */
518 iowrite8(0x83, ap->ioaddr.nsect_addr);
522 static struct ata_port_operations opti82c611a_port_ops = {
523 .inherits = &legacy_base_port_ops,
524 .set_piomode = opti82c611a_set_piomode,
530 * This controller supports PIO0 to PIO3. Unlike the 611A the MVB
531 * version is dual channel but doesn't have a lot of unique registers.
534 static void opti82c46x_set_piomode(struct ata_port *ap, struct ata_device *adev)
536 u8 active, recover, setup;
538 struct ata_device *pair = ata_dev_pair(adev);
540 int khz[4] = { 50000, 40000, 33000, 25000 };
545 sysclk = (opti_syscfg(0xAC) & 0xC0) >> 6; /* BIOS set */
547 /* Enter configuration mode */
548 ioread16(ap->ioaddr.error_addr);
549 ioread16(ap->ioaddr.error_addr);
550 iowrite8(3, ap->ioaddr.nsect_addr);
552 /* Read VLB clock strapping */
553 clock = 1000000000 / khz[sysclk];
555 /* Get the timing data in cycles */
556 ata_timing_compute(adev, adev->pio_mode, &t, clock, 1000);
558 /* Setup timing is shared */
560 struct ata_timing tp;
561 ata_timing_compute(pair, pair->pio_mode, &tp, clock, 1000);
563 ata_timing_merge(&t, &tp, &t, ATA_TIMING_SETUP);
566 active = clamp_val(t.active, 2, 17) - 2;
567 recover = clamp_val(t.recover, 1, 16) - 1;
568 setup = clamp_val(t.setup, 1, 4) - 1;
570 /* Select the right timing bank for write timing */
571 rc = ioread8(ap->ioaddr.lbal_addr);
573 rc |= (adev->devno << 7);
574 iowrite8(rc, ap->ioaddr.lbal_addr);
576 /* Write the timings */
577 iowrite8(active << 4 | recover, ap->ioaddr.error_addr);
579 /* Select the right bank for read timings, also
580 load the shared timings for address */
581 rc = ioread8(ap->ioaddr.device_addr);
583 rc |= adev->devno; /* Index select */
584 rc |= (setup << 4) | 0x04;
585 iowrite8(rc, ap->ioaddr.device_addr);
587 /* Load the read timings */
588 iowrite8(active << 4 | recover, ap->ioaddr.data_addr);
590 /* Ensure the timing register mode is right */
591 rc = ioread8(ap->ioaddr.lbal_addr);
594 iowrite8(rc, ap->ioaddr.lbal_addr);
596 /* Exit command mode */
597 iowrite8(0x83, ap->ioaddr.nsect_addr);
599 /* We need to know this for quad device on the MVB */
600 ap->host->private_data = ap;
604 * opt82c465mv_qc_issue - command issue
605 * @qc: command pending
607 * Called when the libata layer is about to issue a command. We wrap
608 * this interface so that we can load the correct ATA timings. The
609 * MVB has a single set of timing registers and these are shared
610 * across channels. As there are two registers we really ought to
611 * track the last two used values as a sort of register window. For
612 * now we just reload on a channel switch. On the single channel
613 * setup this condition never fires so we do nothing extra.
615 * FIXME: dual channel needs ->serialize support
618 static unsigned int opti82c46x_qc_issue(struct ata_queued_cmd *qc)
620 struct ata_port *ap = qc->ap;
621 struct ata_device *adev = qc->dev;
623 /* If timings are set and for the wrong channel (2nd test is
624 due to a libata shortcoming and will eventually go I hope) */
625 if (ap->host->private_data != ap->host
626 && ap->host->private_data != NULL)
627 opti82c46x_set_piomode(ap, adev);
629 return ata_sff_qc_issue(qc);
632 static struct ata_port_operations opti82c46x_port_ops = {
633 .inherits = &legacy_base_port_ops,
634 .set_piomode = opti82c46x_set_piomode,
635 .qc_issue = opti82c46x_qc_issue,
639 * qdi65x0_set_piomode - PIO setup for QDI65x0
643 * In single channel mode the 6580 has one clock per device and we can
644 * avoid the requirement to clock switch. We also have to load the timing
645 * into the right clock according to whether we are master or slave.
647 * In dual channel mode the 6580 has one clock per channel and we have
648 * to software clockswitch in qc_issue.
651 static void qdi65x0_set_piomode(struct ata_port *ap, struct ata_device *adev)
654 struct legacy_data *ld_qdi = ap->host->private_data;
655 int active, recovery;
658 /* Get the timing data in cycles */
659 ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
662 active = 8 - clamp_val(t.active, 1, 8);
663 recovery = 18 - clamp_val(t.recover, 3, 18);
665 active = 9 - clamp_val(t.active, 2, 9);
666 recovery = 15 - clamp_val(t.recover, 0, 15);
668 timing = (recovery << 4) | active | 0x08;
669 ld_qdi->clock[adev->devno] = timing;
671 if (ld_qdi->type == QDI6580)
672 outb(timing, ld_qdi->timing + 2 * adev->devno);
674 outb(timing, ld_qdi->timing + 2 * ap->port_no);
677 if (ld_qdi->type != QDI6500 && adev->class != ATA_DEV_ATA)
678 outb(0x5F, (ld_qdi->timing & 0xFFF0) + 3);
682 * qdi_qc_issue - command issue
683 * @qc: command pending
685 * Called when the libata layer is about to issue a command. We wrap
686 * this interface so that we can load the correct ATA timings.
689 static unsigned int qdi_qc_issue(struct ata_queued_cmd *qc)
691 struct ata_port *ap = qc->ap;
692 struct ata_device *adev = qc->dev;
693 struct legacy_data *ld_qdi = ap->host->private_data;
695 if (ld_qdi->clock[adev->devno] != ld_qdi->last) {
696 if (adev->pio_mode) {
697 ld_qdi->last = ld_qdi->clock[adev->devno];
698 outb(ld_qdi->clock[adev->devno], ld_qdi->timing +
702 return ata_sff_qc_issue(qc);
705 static unsigned int vlb32_data_xfer(struct ata_device *adev, unsigned char *buf,
706 unsigned int buflen, int rw)
708 struct ata_port *ap = adev->link->ap;
709 int slop = buflen & 3;
711 if (ata_id_has_dword_io(adev->id) && (slop == 0 || slop == 3)
712 && (ap->pflags & ATA_PFLAG_PIO32)) {
714 iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
716 ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
718 if (unlikely(slop)) {
721 memcpy(&pad, buf + buflen - slop, slop);
722 iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr);
724 pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr));
725 memcpy(buf + buflen - slop, &pad, slop);
728 return (buflen + 3) & ~3;
730 return ata_sff_data_xfer(adev, buf, buflen, rw);
733 static int qdi_port(struct platform_device *dev,
734 struct legacy_probe *lp, struct legacy_data *ld)
736 if (devm_request_region(&dev->dev, lp->private, 4, "qdi") == NULL)
738 ld->timing = lp->private;
742 static struct ata_port_operations qdi6500_port_ops = {
743 .inherits = &legacy_base_port_ops,
744 .set_piomode = qdi65x0_set_piomode,
745 .qc_issue = qdi_qc_issue,
746 .sff_data_xfer = vlb32_data_xfer,
749 static struct ata_port_operations qdi6580_port_ops = {
750 .inherits = &legacy_base_port_ops,
751 .set_piomode = qdi65x0_set_piomode,
752 .sff_data_xfer = vlb32_data_xfer,
755 static struct ata_port_operations qdi6580dp_port_ops = {
756 .inherits = &legacy_base_port_ops,
757 .set_piomode = qdi65x0_set_piomode,
758 .qc_issue = qdi_qc_issue,
759 .sff_data_xfer = vlb32_data_xfer,
762 static DEFINE_SPINLOCK(winbond_lock);
764 static void winbond_writecfg(unsigned long port, u8 reg, u8 val)
767 spin_lock_irqsave(&winbond_lock, flags);
768 outb(reg, port + 0x01);
769 outb(val, port + 0x02);
770 spin_unlock_irqrestore(&winbond_lock, flags);
773 static u8 winbond_readcfg(unsigned long port, u8 reg)
778 spin_lock_irqsave(&winbond_lock, flags);
779 outb(reg, port + 0x01);
780 val = inb(port + 0x02);
781 spin_unlock_irqrestore(&winbond_lock, flags);
786 static void winbond_set_piomode(struct ata_port *ap, struct ata_device *adev)
789 struct legacy_data *ld_winbond = ap->host->private_data;
790 int active, recovery;
792 int timing = 0x88 + (ap->port_no * 4) + (adev->devno * 2);
794 reg = winbond_readcfg(ld_winbond->timing, 0x81);
796 /* Get the timing data in cycles */
797 if (reg & 0x40) /* Fast VLB bus, assume 50MHz */
798 ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
800 ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
802 active = (clamp_val(t.active, 3, 17) - 1) & 0x0F;
803 recovery = (clamp_val(t.recover, 1, 15) + 1) & 0x0F;
804 timing = (active << 4) | recovery;
805 winbond_writecfg(ld_winbond->timing, timing, reg);
807 /* Load the setup timing */
810 if (adev->class != ATA_DEV_ATA)
811 reg |= 0x08; /* FIFO off */
812 if (!ata_pio_need_iordy(adev))
813 reg |= 0x02; /* IORDY off */
814 reg |= (clamp_val(t.setup, 0, 3) << 6);
815 winbond_writecfg(ld_winbond->timing, timing + 1, reg);
818 static int winbond_port(struct platform_device *dev,
819 struct legacy_probe *lp, struct legacy_data *ld)
821 if (devm_request_region(&dev->dev, lp->private, 4, "winbond") == NULL)
823 ld->timing = lp->private;
827 static struct ata_port_operations winbond_port_ops = {
828 .inherits = &legacy_base_port_ops,
829 .set_piomode = winbond_set_piomode,
830 .sff_data_xfer = vlb32_data_xfer,
833 static struct legacy_controller controllers[] = {
834 {"BIOS", &legacy_port_ops, ATA_PIO4,
835 ATA_FLAG_NO_IORDY, 0, NULL },
836 {"Snooping", &simple_port_ops, ATA_PIO4,
838 {"PDC20230", &pdc20230_port_ops, ATA_PIO2,
840 ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, NULL },
841 {"HT6560A", &ht6560a_port_ops, ATA_PIO2,
842 ATA_FLAG_NO_IORDY, 0, NULL },
843 {"HT6560B", &ht6560b_port_ops, ATA_PIO4,
844 ATA_FLAG_NO_IORDY, 0, NULL },
845 {"OPTI82C611A", &opti82c611a_port_ops, ATA_PIO3,
847 {"OPTI82C46X", &opti82c46x_port_ops, ATA_PIO3,
849 {"QDI6500", &qdi6500_port_ops, ATA_PIO2,
851 ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, qdi_port },
852 {"QDI6580", &qdi6580_port_ops, ATA_PIO4,
853 0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, qdi_port },
854 {"QDI6580DP", &qdi6580dp_port_ops, ATA_PIO4,
855 0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, qdi_port },
856 {"W83759A", &winbond_port_ops, ATA_PIO4,
857 0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE,
862 * probe_chip_type - Discover controller
863 * @probe: Probe entry to check
865 * Probe an ATA port and identify the type of controller. We don't
866 * check if the controller appears to be driveless at this point.
869 static __init int probe_chip_type(struct legacy_probe *probe)
871 int mask = 1 << probe->slot;
873 if (winbond && (probe->port == 0x1F0 || probe->port == 0x170)) {
874 u8 reg = winbond_readcfg(winbond, 0x81);
875 reg |= 0x80; /* jumpered mode off */
876 winbond_writecfg(winbond, 0x81, reg);
877 reg = winbond_readcfg(winbond, 0x83);
878 reg |= 0xF0; /* local control */
879 winbond_writecfg(winbond, 0x83, reg);
880 reg = winbond_readcfg(winbond, 0x85);
881 reg |= 0xF0; /* programmable timing */
882 winbond_writecfg(winbond, 0x85, reg);
884 reg = winbond_readcfg(winbond, 0x81);
889 if (probe->port == 0x1F0) {
891 local_irq_save(flags);
893 outb(inb(0x1F2) | 0x80, 0x1F2);
901 if ((inb(0x1F2) & 0x80) == 0) {
902 /* PDC20230c or 20630 ? */
903 printk(KERN_INFO "PDC20230-C/20630 VLB ATA controller"
907 local_irq_restore(flags);
913 if (inb(0x1F2) == 0x00)
914 printk(KERN_INFO "PDC20230-B VLB ATA "
915 "controller detected.\n");
916 local_irq_restore(flags);
919 local_irq_restore(flags);
926 if (opti82c611a & mask)
928 if (opti82c46x & mask)
930 if (autospeed & mask)
937 * legacy_init_one - attach a legacy interface
940 * Register an ISA bus IDE interface. Such interfaces are PIO and we
941 * assume do not support IRQ sharing.
944 static __init int legacy_init_one(struct legacy_probe *probe)
946 struct legacy_controller *controller = &controllers[probe->type];
947 int pio_modes = controller->pio_mask;
948 unsigned long io = probe->port;
949 u32 mask = (1 << probe->slot);
950 struct ata_port_operations *ops = controller->ops;
951 struct legacy_data *ld = &legacy_data[probe->slot];
952 struct ata_host *host = NULL;
954 struct platform_device *pdev;
955 struct ata_device *dev;
956 void __iomem *io_addr, *ctrl_addr;
957 u32 iordy = (iordy_mask & mask) ? 0: ATA_FLAG_NO_IORDY;
960 iordy |= controller->flags;
962 pdev = platform_device_register_simple(DRV_NAME, probe->slot, NULL, 0);
964 return PTR_ERR(pdev);
967 if (devm_request_region(&pdev->dev, io, 8, "pata_legacy") == NULL ||
968 devm_request_region(&pdev->dev, io + 0x0206, 1,
969 "pata_legacy") == NULL)
973 io_addr = devm_ioport_map(&pdev->dev, io, 8);
974 ctrl_addr = devm_ioport_map(&pdev->dev, io + 0x0206, 1);
975 if (!io_addr || !ctrl_addr)
977 ld->type = probe->type;
978 if (controller->setup)
979 if (controller->setup(pdev, probe, ld) < 0)
981 host = ata_host_alloc(&pdev->dev, 1);
987 ap->pio_mask = pio_modes;
988 ap->flags |= ATA_FLAG_SLAVE_POSS | iordy;
989 ap->pflags |= controller->pflags;
990 ap->ioaddr.cmd_addr = io_addr;
991 ap->ioaddr.altstatus_addr = ctrl_addr;
992 ap->ioaddr.ctl_addr = ctrl_addr;
993 ata_sff_std_ports(&ap->ioaddr);
994 ap->host->private_data = ld;
996 ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", io, io + 0x0206);
998 ret = ata_host_activate(host, probe->irq, ata_sff_interrupt, 0,
1002 async_synchronize_full();
1003 ld->platform_dev = pdev;
1005 /* Nothing found means we drop the port as its probably not there */
1008 ata_for_each_dev(dev, &ap->link, ALL) {
1009 if (!ata_dev_absent(dev)) {
1010 legacy_host[probe->slot] = host;
1011 ld->platform_dev = pdev;
1015 ata_host_detach(host);
1017 platform_device_unregister(pdev);
1022 * legacy_check_special_cases - ATA special cases
1023 * @p: PCI device to check
1024 * @master: set this if we find an ATA master
1025 * @master: set this if we find an ATA secondary
1027 * A small number of vendors implemented early PCI ATA interfaces
1028 * on bridge logic without the ATA interface being PCI visible.
1029 * Where we have a matching PCI driver we must skip the relevant
1030 * device here. If we don't know about it then the legacy driver
1031 * is the right driver anyway.
1034 static void __init legacy_check_special_cases(struct pci_dev *p, int *primary,
1037 /* Cyrix CS5510 pre SFF MWDMA ATA on the bridge */
1038 if (p->vendor == 0x1078 && p->device == 0x0000) {
1039 *primary = *secondary = 1;
1042 /* Cyrix CS5520 pre SFF MWDMA ATA on the bridge */
1043 if (p->vendor == 0x1078 && p->device == 0x0002) {
1044 *primary = *secondary = 1;
1047 /* Intel MPIIX - PIO ATA on non PCI side of bridge */
1048 if (p->vendor == 0x8086 && p->device == 0x1234) {
1050 pci_read_config_word(p, 0x6C, &r);
1052 /* ATA port enabled */
1062 static __init void probe_opti_vlb(void)
1064 /* If an OPTI 82C46X is present find out where the channels are */
1065 static const char *optis[4] = {
1070 u8 ctrl = (opti_syscfg(0x30) & 0xC0) >> 6;
1072 opti82c46x = 3; /* Assume master and slave first */
1073 printk(KERN_INFO DRV_NAME ": Opti 82C46%s chipset support.\n",
1076 chans = (opti_syscfg(0x3F) & 0x20) ? 2 : 1;
1077 ctrl = opti_syscfg(0xAC);
1078 /* Check enabled and this port is the 465MV port. On the
1079 MVB we may have two channels */
1082 legacy_probe_add(0x1F0, 14, OPTI46X, 0);
1083 legacy_probe_add(0x170, 15, OPTI46X, 0);
1086 legacy_probe_add(0x170, 15, OPTI46X, 0);
1088 legacy_probe_add(0x1F0, 14, OPTI46X, 0);
1090 legacy_probe_add(0x1F0, 14, OPTI46X, 0);
1093 static __init void qdi65_identify_port(u8 r, u8 res, unsigned long port)
1095 static const unsigned long ide_port[2] = { 0x170, 0x1F0 };
1096 /* Check card type */
1097 if ((r & 0xF0) == 0xC0) {
1098 /* QD6500: single channel */
1102 legacy_probe_add(ide_port[r & 0x01], 14 + (r & 0x01),
1105 if (((r & 0xF0) == 0xA0) || (r & 0xF0) == 0x50) {
1106 /* QD6580: dual channel */
1107 if (!request_region(port + 2 , 2, "pata_qdi")) {
1108 release_region(port, 2);
1111 res = inb(port + 3);
1112 /* Single channel mode ? */
1114 legacy_probe_add(ide_port[r & 0x01], 14 + (r & 0x01),
1116 else { /* Dual channel mode */
1117 legacy_probe_add(0x1F0, 14, QDI6580DP, port);
1118 /* port + 0x02, r & 0x04 */
1119 legacy_probe_add(0x170, 15, QDI6580DP, port + 2);
1121 release_region(port + 2, 2);
1125 static __init void probe_qdi_vlb(void)
1127 unsigned long flags;
1128 static const unsigned long qd_port[2] = { 0x30, 0xB0 };
1132 * Check each possible QD65xx base address
1135 for (i = 0; i < 2; i++) {
1136 unsigned long port = qd_port[i];
1140 if (request_region(port, 2, "pata_qdi")) {
1141 /* Check for a card */
1142 local_irq_save(flags);
1143 /* I have no h/w that needs this delay but it
1144 is present in the historic code */
1153 local_irq_restore(flags);
1157 release_region(port, 2);
1160 /* Passes the presence test */
1163 /* Check port agrees with port set */
1164 if ((r & 2) >> 1 == i)
1165 qdi65_identify_port(r, res, port);
1166 release_region(port, 2);
1172 * legacy_init - attach legacy interfaces
1174 * Attach legacy IDE interfaces by scanning the usual IRQ/port suspects.
1175 * Right now we do not scan the ide0 and ide1 address but should do so
1176 * for non PCI systems or systems with no PCI IDE legacy mode devices.
1177 * If you fix that note there are special cases to consider like VLB
1178 * drivers and CS5510/20.
1181 static __init int legacy_init(void)
1187 int pci_present = 0;
1188 struct legacy_probe *pl = &probe_list[0];
1191 struct pci_dev *p = NULL;
1193 for_each_pci_dev(p) {
1195 /* Check for any overlap of the system ATA mappings. Native
1196 mode controllers stuck on these addresses or some devices
1197 in 'raid' mode won't be found by the storage class test */
1198 for (r = 0; r < 6; r++) {
1199 if (pci_resource_start(p, r) == 0x1f0)
1201 if (pci_resource_start(p, r) == 0x170)
1204 /* Check for special cases */
1205 legacy_check_special_cases(p, &primary, &secondary);
1207 /* If PCI bus is present then don't probe for tertiary
1213 winbond = 0x130; /* Default port, alt is 1B0 */
1215 if (primary == 0 || all)
1216 legacy_probe_add(0x1F0, 14, UNKNOWN, 0);
1217 if (secondary == 0 || all)
1218 legacy_probe_add(0x170, 15, UNKNOWN, 0);
1220 if (probe_all || !pci_present) {
1221 /* ISA/VLB extra ports */
1222 legacy_probe_add(0x1E8, 11, UNKNOWN, 0);
1223 legacy_probe_add(0x168, 10, UNKNOWN, 0);
1224 legacy_probe_add(0x1E0, 8, UNKNOWN, 0);
1225 legacy_probe_add(0x160, 12, UNKNOWN, 0);
1233 for (i = 0; i < NR_HOST; i++, pl++) {
1236 if (pl->type == UNKNOWN)
1237 pl->type = probe_chip_type(pl);
1239 if (legacy_init_one(pl) == 0)
1247 static __exit void legacy_exit(void)
1251 for (i = 0; i < nr_legacy_host; i++) {
1252 struct legacy_data *ld = &legacy_data[i];
1253 ata_host_detach(legacy_host[i]);
1254 platform_device_unregister(ld->platform_dev);
1258 MODULE_AUTHOR("Alan Cox");
1259 MODULE_DESCRIPTION("low-level driver for legacy ATA");
1260 MODULE_LICENSE("GPL");
1261 MODULE_VERSION(DRV_VERSION);
1262 MODULE_ALIAS("pata_qdi");
1263 MODULE_ALIAS("pata_winbond");
1265 module_param(probe_all, int, 0);
1266 module_param(autospeed, int, 0);
1267 module_param(ht6560a, int, 0);
1268 module_param(ht6560b, int, 0);
1269 module_param(opti82c611a, int, 0);
1270 module_param(opti82c46x, int, 0);
1271 module_param(qdi, int, 0);
1272 module_param(winbond, int, 0);
1273 module_param(pio_mask, int, 0);
1274 module_param(iordy_mask, int, 0);
1276 module_init(legacy_init);
1277 module_exit(legacy_exit);