1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * pata-legacy.c - Legacy port PATA/SATA controller driver.
4 * Copyright 2005/2006 Red Hat, all rights reserved.
6 * An ATA driver for the legacy ATA ports.
9 * Opti 82C465/82C611 support: Data sheets at opti-inc.com
11 * Promise 20230/20620:
12 * http://www.ryston.cz/petr/vlb/pdc20230b.html
13 * http://www.ryston.cz/petr/vlb/pdc20230c.html
14 * http://www.ryston.cz/petr/vlb/pdc20630.html
16 * http://www.ryston.cz/petr/vlb/qd6500.html
17 * http://www.ryston.cz/petr/vlb/qd6580.html
19 * QDI65x0 probe code based on drivers/ide/legacy/qd65xx.c
20 * Rewritten from the work of Colten Edwards <pje120@cs.usask.ca> by
21 * Samuel Thibault <samuel.thibault@ens-lyon.org>
23 * Unsupported but docs exist:
24 * Appian/Adaptec AIC25VL01/Cirrus Logic PD7220
26 * This driver handles legacy (that is "ISA/VLB side") IDE ports found
27 * on PC class systems. There are three hybrid devices that are exceptions
28 * The Cyrix 5510/5520 where a pre SFF ATA device is on the bridge and
29 * the MPIIX where the tuning is PCI side but the IDE is "ISA side".
31 * Specific support is included for the ht6560a/ht6560b/opti82c611a/
32 * opti82c465mv/promise 20230c/20630/qdi65x0/winbond83759A
34 * Support for the Winbond 83759A when operating in advanced mode.
35 * Multichip mode is not currently supported.
37 * Use the autospeed and pio_mask options with:
38 * Appian ADI/2 aka CLPD7220 or AIC25VL01.
39 * Use the jumpers, autospeed and set pio_mask to the mode on the jumpers with
40 * Goldstar GM82C711, PIC-1288A-125, UMC 82C871F, Winbond W83759,
41 * Winbond W83759A, Promise PDC20230-B
43 * For now use autospeed and pio_mask as above with the W83759A. This may
47 #include <linux/async.h>
48 #include <linux/kernel.h>
49 #include <linux/module.h>
50 #include <linux/pci.h>
51 #include <linux/init.h>
52 #include <linux/blkdev.h>
53 #include <linux/delay.h>
54 #include <scsi/scsi_host.h>
55 #include <linux/ata.h>
56 #include <linux/libata.h>
57 #include <linux/platform_device.h>
59 #define DRV_NAME "pata_legacy"
60 #define DRV_VERSION "0.6.5"
65 module_param(all, int, 0444);
67 "Set to probe unclaimed pri/sec ISA port ranges even if PCI");
70 module_param(probe_all, int, 0);
71 MODULE_PARM_DESC(probe_all,
72 "Set to probe tertiary+ ISA port ranges even if PCI");
74 static int probe_mask = ~0;
75 module_param(probe_mask, int, 0);
76 MODULE_PARM_DESC(probe_mask, "Probe mask for legacy ISA PATA ports");
79 module_param(autospeed, int, 0);
80 MODULE_PARM_DESC(autospeed, "Chip present that snoops speed changes");
82 static int pio_mask = ATA_PIO4;
83 module_param(pio_mask, int, 0);
84 MODULE_PARM_DESC(pio_mask, "PIO range for autospeed devices");
86 static int iordy_mask = 0xFFFFFFFF;
87 module_param(iordy_mask, int, 0);
88 MODULE_PARM_DESC(iordy_mask, "Use IORDY if available");
91 module_param(ht6560a, int, 0);
92 MODULE_PARM_DESC(ht6560a, "HT 6560A on primary 1, second 2, both 3");
95 module_param(ht6560b, int, 0);
96 MODULE_PARM_DESC(ht6560b, "HT 6560B on primary 1, secondary 2, both 3");
98 static int opti82c611a;
99 module_param(opti82c611a, int, 0);
100 MODULE_PARM_DESC(opti82c611a,
101 "Opti 82c611A on primary 1, secondary 2, both 3");
103 static int opti82c46x;
104 module_param(opti82c46x, int, 0);
105 MODULE_PARM_DESC(opti82c46x,
106 "Opti 82c465MV on primary 1, secondary 2, both 3");
108 #ifdef CONFIG_PATA_QDI_MODULE
113 module_param(qdi, int, 0);
114 MODULE_PARM_DESC(qdi, "Set to probe QDI controllers");
116 #ifdef CONFIG_PATA_WINBOND_VLB_MODULE
117 static int winbond = 1;
121 module_param(winbond, int, 0);
122 MODULE_PARM_DESC(winbond,
123 "Set to probe Winbond controllers, "
124 "give I/O port if non standard");
137 QDI6580DP = 9, /* Dual channel mode is different */
144 unsigned long timing;
148 enum controller type;
149 struct platform_device *platform_dev;
152 struct legacy_probe {
157 enum controller type;
158 unsigned long private;
161 struct legacy_controller {
163 struct ata_port_operations *ops;
164 unsigned int pio_mask;
167 int (*setup)(struct platform_device *, struct legacy_probe *probe,
168 struct legacy_data *data);
171 static int legacy_port[NR_HOST] = { 0x1f0, 0x170, 0x1e8, 0x168, 0x1e0, 0x160 };
173 static struct legacy_probe probe_list[NR_HOST];
174 static struct legacy_data legacy_data[NR_HOST];
175 static struct ata_host *legacy_host[NR_HOST];
176 static int nr_legacy_host;
180 * legacy_probe_add - Add interface to probe list
181 * @port: Controller port
183 * @type: Controller type
184 * @private: Controller specific info
186 * Add an entry into the probe list for ATA controllers. This is used
187 * to add the default ISA slots and then to build up the table
188 * further according to other ISA/VLB/Weird device scans
190 * An I/O port list is used to keep ordering stable and sane, as we
191 * don't have any good way to talk about ordering otherwise
194 static int legacy_probe_add(unsigned long port, unsigned int irq,
195 enum controller type, unsigned long private)
197 struct legacy_probe *lp = &probe_list[0];
199 struct legacy_probe *free = NULL;
201 for (i = 0; i < NR_HOST; i++) {
202 if (lp->port == 0 && free == NULL)
204 /* Matching port, or the correct slot for ordering */
205 if (lp->port == port || legacy_port[i] == port) {
206 if (!(probe_mask & 1 << i))
214 printk(KERN_ERR "pata_legacy: Too many interfaces.\n");
217 /* Fill in the entry for later probing */
221 free->private = private;
227 * legacy_set_mode - mode setting
229 * @unused: Device that failed when error is returned
231 * Use a non standard set_mode function. We don't want to be tuned.
233 * The BIOS configured everything. Our job is not to fiddle. Just use
234 * whatever PIO the hardware is using and leave it at that. When we
235 * get some kind of nice user driven API for control then we can
236 * expand on this as per hdparm in the base kernel.
239 static int legacy_set_mode(struct ata_link *link, struct ata_device **unused)
241 struct ata_device *dev;
243 ata_for_each_dev(dev, link, ENABLED) {
244 ata_dev_info(dev, "configured for PIO\n");
245 dev->pio_mode = XFER_PIO_0;
246 dev->xfer_mode = XFER_PIO_0;
247 dev->xfer_shift = ATA_SHIFT_PIO;
248 dev->flags |= ATA_DFLAG_PIO;
253 static const struct scsi_host_template legacy_sht = {
254 ATA_PIO_SHT(DRV_NAME),
257 static const struct ata_port_operations legacy_base_port_ops = {
258 .inherits = &ata_sff_port_ops,
259 .cable_detect = ata_cable_40wire,
263 * These ops are used if the user indicates the hardware
264 * snoops the commands to decide on the mode and handles the
265 * mode selection "magically" itself. Several legacy controllers
266 * do this. The mode range can be set if it is not 0x1F by setting
270 static struct ata_port_operations simple_port_ops = {
271 .inherits = &legacy_base_port_ops,
272 .sff_data_xfer = ata_sff_data_xfer32,
275 static struct ata_port_operations legacy_port_ops = {
276 .inherits = &legacy_base_port_ops,
277 .sff_data_xfer = ata_sff_data_xfer32,
278 .set_mode = legacy_set_mode,
282 * Promise 20230C and 20620 support
284 * This controller supports PIO0 to PIO2. We set PIO timings
285 * conservatively to allow for 50MHz Vesa Local Bus. The 20620 DMA
286 * support is weird being DMA to controller and PIO'd to the host
290 static void pdc20230_set_piomode(struct ata_port *ap, struct ata_device *adev)
293 int pio = adev->pio_mode - XFER_PIO_0;
297 /* Safe as UP only. Force I/Os to occur together */
299 local_irq_save(flags);
301 /* Unlock the control interface */
304 outb(inb(0x1F2) | 0x80, 0x1F2);
311 while ((inb(0x1F2) & 0x80) && --tries);
313 local_irq_restore(flags);
315 outb(inb(0x1F4) & 0x07, 0x1F4);
318 rt &= ~(0x07 << (3 * !adev->devno));
320 rt |= (1 + 3 * pio) << (3 * !adev->devno);
324 outb(inb(0x1F2) | 0x01, 0x1F2);
330 static unsigned int pdc_data_xfer_vlb(struct ata_queued_cmd *qc,
331 unsigned char *buf, unsigned int buflen, int rw)
333 struct ata_device *dev = qc->dev;
334 struct ata_port *ap = dev->link->ap;
335 int slop = buflen & 3;
337 /* 32bit I/O capable *and* we need to write a whole number of dwords */
338 if (ata_id_has_dword_io(dev->id) && (slop == 0 || slop == 3)
339 && (ap->pflags & ATA_PFLAG_PIO32)) {
342 local_irq_save(flags);
344 /* Perform the 32bit I/O synchronization sequence */
345 ioread8(ap->ioaddr.nsect_addr);
346 ioread8(ap->ioaddr.nsect_addr);
347 ioread8(ap->ioaddr.nsect_addr);
351 ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
353 iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
355 if (unlikely(slop)) {
359 pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr));
360 memcpy(buf + buflen - slop, &pad, slop);
362 memcpy(&pad, buf + buflen - slop, slop);
363 iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr);
367 local_irq_restore(flags);
369 buflen = ata_sff_data_xfer32(qc, buf, buflen, rw);
374 static struct ata_port_operations pdc20230_port_ops = {
375 .inherits = &legacy_base_port_ops,
376 .set_piomode = pdc20230_set_piomode,
377 .sff_data_xfer = pdc_data_xfer_vlb,
381 * Holtek 6560A support
383 * This controller supports PIO0 to PIO2 (no IORDY even though higher
384 * timings can be loaded).
387 static void ht6560a_set_piomode(struct ata_port *ap, struct ata_device *adev)
392 /* Get the timing data in cycles. For now play safe at 50Mhz */
393 ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
395 active = clamp_val(t.active, 2, 15);
396 recover = clamp_val(t.recover, 4, 15);
403 iowrite8(recover << 4 | active, ap->ioaddr.device_addr);
404 ioread8(ap->ioaddr.status_addr);
407 static struct ata_port_operations ht6560a_port_ops = {
408 .inherits = &legacy_base_port_ops,
409 .set_piomode = ht6560a_set_piomode,
413 * Holtek 6560B support
415 * This controller supports PIO0 to PIO4. We honour the BIOS/jumper FIFO
416 * setting unless we see an ATAPI device in which case we force it off.
418 * FIXME: need to implement 2nd channel support.
421 static void ht6560b_set_piomode(struct ata_port *ap, struct ata_device *adev)
426 /* Get the timing data in cycles. For now play safe at 50Mhz */
427 ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
429 active = clamp_val(t.active, 2, 15);
430 recover = clamp_val(t.recover, 2, 16) & 0x0F;
437 iowrite8(recover << 4 | active, ap->ioaddr.device_addr);
439 if (adev->class != ATA_DEV_ATA) {
440 u8 rconf = inb(0x3E6);
446 ioread8(ap->ioaddr.status_addr);
449 static struct ata_port_operations ht6560b_port_ops = {
450 .inherits = &legacy_base_port_ops,
451 .set_piomode = ht6560b_set_piomode,
455 * Opti core chipset helpers
459 * opti_syscfg - read OPTI chipset configuration
460 * @reg: Configuration register to read
462 * Returns the value of an OPTI system board configuration register.
465 static u8 opti_syscfg(u8 reg)
470 /* Uniprocessor chipset and must force cycles adjancent */
471 local_irq_save(flags);
474 local_irq_restore(flags);
481 * This controller supports PIO0 to PIO3.
484 static void opti82c611a_set_piomode(struct ata_port *ap,
485 struct ata_device *adev)
487 u8 active, recover, setup;
489 struct ata_device *pair = ata_dev_pair(adev);
491 int khz[4] = { 50000, 40000, 33000, 25000 };
494 /* Enter configuration mode */
495 ioread16(ap->ioaddr.error_addr);
496 ioread16(ap->ioaddr.error_addr);
497 iowrite8(3, ap->ioaddr.nsect_addr);
499 /* Read VLB clock strapping */
500 clock = 1000000000 / khz[ioread8(ap->ioaddr.lbah_addr) & 0x03];
502 /* Get the timing data in cycles */
503 ata_timing_compute(adev, adev->pio_mode, &t, clock, 1000);
505 /* Setup timing is shared */
507 struct ata_timing tp;
508 ata_timing_compute(pair, pair->pio_mode, &tp, clock, 1000);
510 ata_timing_merge(&t, &tp, &t, ATA_TIMING_SETUP);
513 active = clamp_val(t.active, 2, 17) - 2;
514 recover = clamp_val(t.recover, 1, 16) - 1;
515 setup = clamp_val(t.setup, 1, 4) - 1;
517 /* Select the right timing bank for write timing */
518 rc = ioread8(ap->ioaddr.lbal_addr);
520 rc |= (adev->devno << 7);
521 iowrite8(rc, ap->ioaddr.lbal_addr);
523 /* Write the timings */
524 iowrite8(active << 4 | recover, ap->ioaddr.error_addr);
526 /* Select the right bank for read timings, also
527 load the shared timings for address */
528 rc = ioread8(ap->ioaddr.device_addr);
530 rc |= adev->devno; /* Index select */
531 rc |= (setup << 4) | 0x04;
532 iowrite8(rc, ap->ioaddr.device_addr);
534 /* Load the read timings */
535 iowrite8(active << 4 | recover, ap->ioaddr.data_addr);
537 /* Ensure the timing register mode is right */
538 rc = ioread8(ap->ioaddr.lbal_addr);
541 iowrite8(rc, ap->ioaddr.lbal_addr);
543 /* Exit command mode */
544 iowrite8(0x83, ap->ioaddr.nsect_addr);
548 static struct ata_port_operations opti82c611a_port_ops = {
549 .inherits = &legacy_base_port_ops,
550 .set_piomode = opti82c611a_set_piomode,
556 * This controller supports PIO0 to PIO3. Unlike the 611A the MVB
557 * version is dual channel but doesn't have a lot of unique registers.
560 static void opti82c46x_set_piomode(struct ata_port *ap, struct ata_device *adev)
562 u8 active, recover, setup;
564 struct ata_device *pair = ata_dev_pair(adev);
566 int khz[4] = { 50000, 40000, 33000, 25000 };
571 sysclk = (opti_syscfg(0xAC) & 0xC0) >> 6; /* BIOS set */
573 /* Enter configuration mode */
574 ioread16(ap->ioaddr.error_addr);
575 ioread16(ap->ioaddr.error_addr);
576 iowrite8(3, ap->ioaddr.nsect_addr);
578 /* Read VLB clock strapping */
579 clock = 1000000000 / khz[sysclk];
581 /* Get the timing data in cycles */
582 ata_timing_compute(adev, adev->pio_mode, &t, clock, 1000);
584 /* Setup timing is shared */
586 struct ata_timing tp;
587 ata_timing_compute(pair, pair->pio_mode, &tp, clock, 1000);
589 ata_timing_merge(&t, &tp, &t, ATA_TIMING_SETUP);
592 active = clamp_val(t.active, 2, 17) - 2;
593 recover = clamp_val(t.recover, 1, 16) - 1;
594 setup = clamp_val(t.setup, 1, 4) - 1;
596 /* Select the right timing bank for write timing */
597 rc = ioread8(ap->ioaddr.lbal_addr);
599 rc |= (adev->devno << 7);
600 iowrite8(rc, ap->ioaddr.lbal_addr);
602 /* Write the timings */
603 iowrite8(active << 4 | recover, ap->ioaddr.error_addr);
605 /* Select the right bank for read timings, also
606 load the shared timings for address */
607 rc = ioread8(ap->ioaddr.device_addr);
609 rc |= adev->devno; /* Index select */
610 rc |= (setup << 4) | 0x04;
611 iowrite8(rc, ap->ioaddr.device_addr);
613 /* Load the read timings */
614 iowrite8(active << 4 | recover, ap->ioaddr.data_addr);
616 /* Ensure the timing register mode is right */
617 rc = ioread8(ap->ioaddr.lbal_addr);
620 iowrite8(rc, ap->ioaddr.lbal_addr);
622 /* Exit command mode */
623 iowrite8(0x83, ap->ioaddr.nsect_addr);
625 /* We need to know this for quad device on the MVB */
626 ap->host->private_data = ap;
630 * opti82c46x_qc_issue - command issue
631 * @qc: command pending
633 * Called when the libata layer is about to issue a command. We wrap
634 * this interface so that we can load the correct ATA timings. The
635 * MVB has a single set of timing registers and these are shared
636 * across channels. As there are two registers we really ought to
637 * track the last two used values as a sort of register window. For
638 * now we just reload on a channel switch. On the single channel
639 * setup this condition never fires so we do nothing extra.
641 * FIXME: dual channel needs ->serialize support
644 static unsigned int opti82c46x_qc_issue(struct ata_queued_cmd *qc)
646 struct ata_port *ap = qc->ap;
647 struct ata_device *adev = qc->dev;
649 /* If timings are set and for the wrong channel (2nd test is
650 due to a libata shortcoming and will eventually go I hope) */
651 if (ap->host->private_data != ap->host
652 && ap->host->private_data != NULL)
653 opti82c46x_set_piomode(ap, adev);
655 return ata_sff_qc_issue(qc);
658 static struct ata_port_operations opti82c46x_port_ops = {
659 .inherits = &legacy_base_port_ops,
660 .set_piomode = opti82c46x_set_piomode,
661 .qc_issue = opti82c46x_qc_issue,
665 * qdi65x0_set_piomode - PIO setup for QDI65x0
669 * In single channel mode the 6580 has one clock per device and we can
670 * avoid the requirement to clock switch. We also have to load the timing
671 * into the right clock according to whether we are master or slave.
673 * In dual channel mode the 6580 has one clock per channel and we have
674 * to software clockswitch in qc_issue.
677 static void qdi65x0_set_piomode(struct ata_port *ap, struct ata_device *adev)
680 struct legacy_data *ld_qdi = ap->host->private_data;
681 int active, recovery;
684 /* Get the timing data in cycles */
685 ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
688 active = 8 - clamp_val(t.active, 1, 8);
689 recovery = 18 - clamp_val(t.recover, 3, 18);
691 active = 9 - clamp_val(t.active, 2, 9);
692 recovery = 15 - clamp_val(t.recover, 0, 15);
694 timing = (recovery << 4) | active | 0x08;
695 ld_qdi->clock[adev->devno] = timing;
697 if (ld_qdi->type == QDI6580)
698 outb(timing, ld_qdi->timing + 2 * adev->devno);
700 outb(timing, ld_qdi->timing + 2 * ap->port_no);
703 if (ld_qdi->type != QDI6500 && adev->class != ATA_DEV_ATA)
704 outb(0x5F, (ld_qdi->timing & 0xFFF0) + 3);
708 * qdi_qc_issue - command issue
709 * @qc: command pending
711 * Called when the libata layer is about to issue a command. We wrap
712 * this interface so that we can load the correct ATA timings.
715 static unsigned int qdi_qc_issue(struct ata_queued_cmd *qc)
717 struct ata_port *ap = qc->ap;
718 struct ata_device *adev = qc->dev;
719 struct legacy_data *ld_qdi = ap->host->private_data;
721 if (ld_qdi->clock[adev->devno] != ld_qdi->last) {
722 if (adev->pio_mode) {
723 ld_qdi->last = ld_qdi->clock[adev->devno];
724 outb(ld_qdi->clock[adev->devno], ld_qdi->timing +
728 return ata_sff_qc_issue(qc);
731 static unsigned int vlb32_data_xfer(struct ata_queued_cmd *qc,
733 unsigned int buflen, int rw)
735 struct ata_device *adev = qc->dev;
736 struct ata_port *ap = adev->link->ap;
737 int slop = buflen & 3;
739 if (ata_id_has_dword_io(adev->id) && (slop == 0 || slop == 3)
740 && (ap->pflags & ATA_PFLAG_PIO32)) {
742 iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
744 ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
746 if (unlikely(slop)) {
750 memcpy(&pad, buf + buflen - slop, slop);
751 iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr);
753 pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr));
754 memcpy(buf + buflen - slop, &pad, slop);
757 return (buflen + 3) & ~3;
759 return ata_sff_data_xfer(qc, buf, buflen, rw);
762 static int qdi_port(struct platform_device *dev,
763 struct legacy_probe *lp, struct legacy_data *ld)
765 if (devm_request_region(&dev->dev, lp->private, 4, "qdi") == NULL)
767 ld->timing = lp->private;
771 static struct ata_port_operations qdi6500_port_ops = {
772 .inherits = &legacy_base_port_ops,
773 .set_piomode = qdi65x0_set_piomode,
774 .qc_issue = qdi_qc_issue,
775 .sff_data_xfer = vlb32_data_xfer,
778 static struct ata_port_operations qdi6580_port_ops = {
779 .inherits = &legacy_base_port_ops,
780 .set_piomode = qdi65x0_set_piomode,
781 .sff_data_xfer = vlb32_data_xfer,
784 static struct ata_port_operations qdi6580dp_port_ops = {
785 .inherits = &legacy_base_port_ops,
786 .set_piomode = qdi65x0_set_piomode,
787 .qc_issue = qdi_qc_issue,
788 .sff_data_xfer = vlb32_data_xfer,
791 static DEFINE_SPINLOCK(winbond_lock);
793 static void winbond_writecfg(unsigned long port, u8 reg, u8 val)
796 spin_lock_irqsave(&winbond_lock, flags);
797 outb(reg, port + 0x01);
798 outb(val, port + 0x02);
799 spin_unlock_irqrestore(&winbond_lock, flags);
802 static u8 winbond_readcfg(unsigned long port, u8 reg)
807 spin_lock_irqsave(&winbond_lock, flags);
808 outb(reg, port + 0x01);
809 val = inb(port + 0x02);
810 spin_unlock_irqrestore(&winbond_lock, flags);
815 static void winbond_set_piomode(struct ata_port *ap, struct ata_device *adev)
818 struct legacy_data *ld_winbond = ap->host->private_data;
819 int active, recovery;
821 int timing = 0x88 + (ap->port_no * 4) + (adev->devno * 2);
823 reg = winbond_readcfg(ld_winbond->timing, 0x81);
825 /* Get the timing data in cycles */
826 if (reg & 0x40) /* Fast VLB bus, assume 50MHz */
827 ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
829 ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
831 active = (clamp_val(t.active, 3, 17) - 1) & 0x0F;
832 recovery = (clamp_val(t.recover, 1, 15) + 1) & 0x0F;
833 timing = (active << 4) | recovery;
834 winbond_writecfg(ld_winbond->timing, timing, reg);
836 /* Load the setup timing */
839 if (adev->class != ATA_DEV_ATA)
840 reg |= 0x08; /* FIFO off */
841 if (!ata_pio_need_iordy(adev))
842 reg |= 0x02; /* IORDY off */
843 reg |= (clamp_val(t.setup, 0, 3) << 6);
844 winbond_writecfg(ld_winbond->timing, timing + 1, reg);
847 static int winbond_port(struct platform_device *dev,
848 struct legacy_probe *lp, struct legacy_data *ld)
850 if (devm_request_region(&dev->dev, lp->private, 4, "winbond") == NULL)
852 ld->timing = lp->private;
856 static struct ata_port_operations winbond_port_ops = {
857 .inherits = &legacy_base_port_ops,
858 .set_piomode = winbond_set_piomode,
859 .sff_data_xfer = vlb32_data_xfer,
862 static struct legacy_controller controllers[] = {
863 {"BIOS", &legacy_port_ops, ATA_PIO4,
864 ATA_FLAG_NO_IORDY, 0, NULL },
865 {"Snooping", &simple_port_ops, ATA_PIO4,
867 {"PDC20230", &pdc20230_port_ops, ATA_PIO2,
869 ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, NULL },
870 {"HT6560A", &ht6560a_port_ops, ATA_PIO2,
871 ATA_FLAG_NO_IORDY, 0, NULL },
872 {"HT6560B", &ht6560b_port_ops, ATA_PIO4,
873 ATA_FLAG_NO_IORDY, 0, NULL },
874 {"OPTI82C611A", &opti82c611a_port_ops, ATA_PIO3,
876 {"OPTI82C46X", &opti82c46x_port_ops, ATA_PIO3,
878 {"QDI6500", &qdi6500_port_ops, ATA_PIO2,
880 ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, qdi_port },
881 {"QDI6580", &qdi6580_port_ops, ATA_PIO4,
882 0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, qdi_port },
883 {"QDI6580DP", &qdi6580dp_port_ops, ATA_PIO4,
884 0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, qdi_port },
885 {"W83759A", &winbond_port_ops, ATA_PIO4,
886 0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE,
891 * probe_chip_type - Discover controller
892 * @probe: Probe entry to check
894 * Probe an ATA port and identify the type of controller. We don't
895 * check if the controller appears to be driveless at this point.
898 static __init int probe_chip_type(struct legacy_probe *probe)
900 int mask = 1 << probe->slot;
902 if (winbond && (probe->port == 0x1F0 || probe->port == 0x170)) {
903 u8 reg = winbond_readcfg(winbond, 0x81);
904 reg |= 0x80; /* jumpered mode off */
905 winbond_writecfg(winbond, 0x81, reg);
906 reg = winbond_readcfg(winbond, 0x83);
907 reg |= 0xF0; /* local control */
908 winbond_writecfg(winbond, 0x83, reg);
909 reg = winbond_readcfg(winbond, 0x85);
910 reg |= 0xF0; /* programmable timing */
911 winbond_writecfg(winbond, 0x85, reg);
913 reg = winbond_readcfg(winbond, 0x81);
918 if (probe->port == 0x1F0) {
920 local_irq_save(flags);
922 outb(inb(0x1F2) | 0x80, 0x1F2);
930 if ((inb(0x1F2) & 0x80) == 0) {
931 /* PDC20230c or 20630 ? */
932 printk(KERN_INFO "PDC20230-C/20630 VLB ATA controller"
936 local_irq_restore(flags);
942 if (inb(0x1F2) == 0x00)
943 printk(KERN_INFO "PDC20230-B VLB ATA "
944 "controller detected.\n");
945 local_irq_restore(flags);
954 if (opti82c611a & mask)
956 if (opti82c46x & mask)
958 if (autospeed & mask)
965 * legacy_init_one - attach a legacy interface
966 * @probe: probe record
968 * Register an ISA bus IDE interface. Such interfaces are PIO and we
969 * assume do not support IRQ sharing.
972 static __init int legacy_init_one(struct legacy_probe *probe)
974 struct legacy_controller *controller = &controllers[probe->type];
975 int pio_modes = controller->pio_mask;
976 unsigned long io = probe->port;
977 u32 mask = (1 << probe->slot);
978 struct ata_port_operations *ops = controller->ops;
979 struct legacy_data *ld = &legacy_data[probe->slot];
980 struct ata_host *host = NULL;
982 struct platform_device *pdev;
983 struct ata_device *dev;
984 void __iomem *io_addr, *ctrl_addr;
985 u32 iordy = (iordy_mask & mask) ? 0: ATA_FLAG_NO_IORDY;
988 iordy |= controller->flags;
990 pdev = platform_device_register_simple(DRV_NAME, probe->slot, NULL, 0);
992 return PTR_ERR(pdev);
995 if (devm_request_region(&pdev->dev, io, 8, "pata_legacy") == NULL ||
996 devm_request_region(&pdev->dev, io + 0x0206, 1,
997 "pata_legacy") == NULL)
1001 io_addr = devm_ioport_map(&pdev->dev, io, 8);
1002 ctrl_addr = devm_ioport_map(&pdev->dev, io + 0x0206, 1);
1003 if (!io_addr || !ctrl_addr)
1005 ld->type = probe->type;
1006 if (controller->setup)
1007 if (controller->setup(pdev, probe, ld) < 0)
1009 host = ata_host_alloc(&pdev->dev, 1);
1012 ap = host->ports[0];
1015 ap->pio_mask = pio_modes;
1016 ap->flags |= ATA_FLAG_SLAVE_POSS | iordy;
1017 ap->pflags |= controller->pflags;
1018 ap->ioaddr.cmd_addr = io_addr;
1019 ap->ioaddr.altstatus_addr = ctrl_addr;
1020 ap->ioaddr.ctl_addr = ctrl_addr;
1021 ata_sff_std_ports(&ap->ioaddr);
1022 ap->host->private_data = ld;
1024 ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", io, io + 0x0206);
1026 ret = ata_host_activate(host, probe->irq, ata_sff_interrupt, 0,
1030 async_synchronize_full();
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 * @primary: set this if we find an ATA master
1053 * @secondary: 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);
1290 MODULE_ALIAS("pata_qdi");
1291 MODULE_ALIAS("pata_winbond");
1293 module_init(legacy_init);
1294 module_exit(legacy_exit);