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 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);
323 outb(inb(0x1F2) | 0x01, 0x1F2);
329 static unsigned int pdc_data_xfer_vlb(struct ata_queued_cmd *qc,
330 unsigned char *buf, unsigned int buflen, int rw)
332 struct ata_device *dev = qc->dev;
333 struct ata_port *ap = dev->link->ap;
334 int slop = buflen & 3;
336 /* 32bit I/O capable *and* we need to write a whole number of dwords */
337 if (ata_id_has_dword_io(dev->id) && (slop == 0 || slop == 3)
338 && (ap->pflags & ATA_PFLAG_PIO32)) {
341 local_irq_save(flags);
343 /* Perform the 32bit I/O synchronization sequence */
344 ioread8(ap->ioaddr.nsect_addr);
345 ioread8(ap->ioaddr.nsect_addr);
346 ioread8(ap->ioaddr.nsect_addr);
350 ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
352 iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
354 if (unlikely(slop)) {
358 pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr));
359 memcpy(buf + buflen - slop, &pad, slop);
361 memcpy(&pad, buf + buflen - slop, slop);
362 iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr);
366 local_irq_restore(flags);
368 buflen = ata_sff_data_xfer32(qc, buf, buflen, rw);
373 static struct ata_port_operations pdc20230_port_ops = {
374 .inherits = &legacy_base_port_ops,
375 .set_piomode = pdc20230_set_piomode,
376 .sff_data_xfer = pdc_data_xfer_vlb,
380 * Holtek 6560A support
382 * This controller supports PIO0 to PIO2 (no IORDY even though higher
383 * timings can be loaded).
386 static void ht6560a_set_piomode(struct ata_port *ap, struct ata_device *adev)
391 /* Get the timing data in cycles. For now play safe at 50Mhz */
392 ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
394 active = clamp_val(t.active, 2, 15);
395 recover = clamp_val(t.recover, 4, 15);
402 iowrite8(recover << 4 | active, ap->ioaddr.device_addr);
403 ioread8(ap->ioaddr.status_addr);
406 static struct ata_port_operations ht6560a_port_ops = {
407 .inherits = &legacy_base_port_ops,
408 .set_piomode = ht6560a_set_piomode,
412 * Holtek 6560B support
414 * This controller supports PIO0 to PIO4. We honour the BIOS/jumper FIFO
415 * setting unless we see an ATAPI device in which case we force it off.
417 * FIXME: need to implement 2nd channel support.
420 static void ht6560b_set_piomode(struct ata_port *ap, struct ata_device *adev)
425 /* Get the timing data in cycles. For now play safe at 50Mhz */
426 ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
428 active = clamp_val(t.active, 2, 15);
429 recover = clamp_val(t.recover, 2, 16) & 0x0F;
436 iowrite8(recover << 4 | active, ap->ioaddr.device_addr);
438 if (adev->class != ATA_DEV_ATA) {
439 u8 rconf = inb(0x3E6);
445 ioread8(ap->ioaddr.status_addr);
448 static struct ata_port_operations ht6560b_port_ops = {
449 .inherits = &legacy_base_port_ops,
450 .set_piomode = ht6560b_set_piomode,
454 * Opti core chipset helpers
458 * opti_syscfg - read OPTI chipset configuration
459 * @reg: Configuration register to read
461 * Returns the value of an OPTI system board configuration register.
464 static u8 opti_syscfg(u8 reg)
469 /* Uniprocessor chipset and must force cycles adjancent */
470 local_irq_save(flags);
473 local_irq_restore(flags);
480 * This controller supports PIO0 to PIO3.
483 static void opti82c611a_set_piomode(struct ata_port *ap,
484 struct ata_device *adev)
486 u8 active, recover, setup;
488 struct ata_device *pair = ata_dev_pair(adev);
490 int khz[4] = { 50000, 40000, 33000, 25000 };
493 /* Enter configuration mode */
494 ioread16(ap->ioaddr.error_addr);
495 ioread16(ap->ioaddr.error_addr);
496 iowrite8(3, ap->ioaddr.nsect_addr);
498 /* Read VLB clock strapping */
499 clock = 1000000000 / khz[ioread8(ap->ioaddr.lbah_addr) & 0x03];
501 /* Get the timing data in cycles */
502 ata_timing_compute(adev, adev->pio_mode, &t, clock, 1000);
504 /* Setup timing is shared */
506 struct ata_timing tp;
507 ata_timing_compute(pair, pair->pio_mode, &tp, clock, 1000);
509 ata_timing_merge(&t, &tp, &t, ATA_TIMING_SETUP);
512 active = clamp_val(t.active, 2, 17) - 2;
513 recover = clamp_val(t.recover, 1, 16) - 1;
514 setup = clamp_val(t.setup, 1, 4) - 1;
516 /* Select the right timing bank for write timing */
517 rc = ioread8(ap->ioaddr.lbal_addr);
519 rc |= (adev->devno << 7);
520 iowrite8(rc, ap->ioaddr.lbal_addr);
522 /* Write the timings */
523 iowrite8(active << 4 | recover, ap->ioaddr.error_addr);
525 /* Select the right bank for read timings, also
526 load the shared timings for address */
527 rc = ioread8(ap->ioaddr.device_addr);
529 rc |= adev->devno; /* Index select */
530 rc |= (setup << 4) | 0x04;
531 iowrite8(rc, ap->ioaddr.device_addr);
533 /* Load the read timings */
534 iowrite8(active << 4 | recover, ap->ioaddr.data_addr);
536 /* Ensure the timing register mode is right */
537 rc = ioread8(ap->ioaddr.lbal_addr);
540 iowrite8(rc, ap->ioaddr.lbal_addr);
542 /* Exit command mode */
543 iowrite8(0x83, ap->ioaddr.nsect_addr);
547 static struct ata_port_operations opti82c611a_port_ops = {
548 .inherits = &legacy_base_port_ops,
549 .set_piomode = opti82c611a_set_piomode,
555 * This controller supports PIO0 to PIO3. Unlike the 611A the MVB
556 * version is dual channel but doesn't have a lot of unique registers.
559 static void opti82c46x_set_piomode(struct ata_port *ap, struct ata_device *adev)
561 u8 active, recover, setup;
563 struct ata_device *pair = ata_dev_pair(adev);
565 int khz[4] = { 50000, 40000, 33000, 25000 };
570 sysclk = (opti_syscfg(0xAC) & 0xC0) >> 6; /* BIOS set */
572 /* Enter configuration mode */
573 ioread16(ap->ioaddr.error_addr);
574 ioread16(ap->ioaddr.error_addr);
575 iowrite8(3, ap->ioaddr.nsect_addr);
577 /* Read VLB clock strapping */
578 clock = 1000000000 / khz[sysclk];
580 /* Get the timing data in cycles */
581 ata_timing_compute(adev, adev->pio_mode, &t, clock, 1000);
583 /* Setup timing is shared */
585 struct ata_timing tp;
586 ata_timing_compute(pair, pair->pio_mode, &tp, clock, 1000);
588 ata_timing_merge(&t, &tp, &t, ATA_TIMING_SETUP);
591 active = clamp_val(t.active, 2, 17) - 2;
592 recover = clamp_val(t.recover, 1, 16) - 1;
593 setup = clamp_val(t.setup, 1, 4) - 1;
595 /* Select the right timing bank for write timing */
596 rc = ioread8(ap->ioaddr.lbal_addr);
598 rc |= (adev->devno << 7);
599 iowrite8(rc, ap->ioaddr.lbal_addr);
601 /* Write the timings */
602 iowrite8(active << 4 | recover, ap->ioaddr.error_addr);
604 /* Select the right bank for read timings, also
605 load the shared timings for address */
606 rc = ioread8(ap->ioaddr.device_addr);
608 rc |= adev->devno; /* Index select */
609 rc |= (setup << 4) | 0x04;
610 iowrite8(rc, ap->ioaddr.device_addr);
612 /* Load the read timings */
613 iowrite8(active << 4 | recover, ap->ioaddr.data_addr);
615 /* Ensure the timing register mode is right */
616 rc = ioread8(ap->ioaddr.lbal_addr);
619 iowrite8(rc, ap->ioaddr.lbal_addr);
621 /* Exit command mode */
622 iowrite8(0x83, ap->ioaddr.nsect_addr);
624 /* We need to know this for quad device on the MVB */
625 ap->host->private_data = ap;
629 * opti82c46x_qc_issue - command issue
630 * @qc: command pending
632 * Called when the libata layer is about to issue a command. We wrap
633 * this interface so that we can load the correct ATA timings. The
634 * MVB has a single set of timing registers and these are shared
635 * across channels. As there are two registers we really ought to
636 * track the last two used values as a sort of register window. For
637 * now we just reload on a channel switch. On the single channel
638 * setup this condition never fires so we do nothing extra.
640 * FIXME: dual channel needs ->serialize support
643 static unsigned int opti82c46x_qc_issue(struct ata_queued_cmd *qc)
645 struct ata_port *ap = qc->ap;
646 struct ata_device *adev = qc->dev;
648 /* If timings are set and for the wrong channel (2nd test is
649 due to a libata shortcoming and will eventually go I hope) */
650 if (ap->host->private_data != ap->host
651 && ap->host->private_data != NULL)
652 opti82c46x_set_piomode(ap, adev);
654 return ata_sff_qc_issue(qc);
657 static struct ata_port_operations opti82c46x_port_ops = {
658 .inherits = &legacy_base_port_ops,
659 .set_piomode = opti82c46x_set_piomode,
660 .qc_issue = opti82c46x_qc_issue,
664 * qdi65x0_set_piomode - PIO setup for QDI65x0
668 * In single channel mode the 6580 has one clock per device and we can
669 * avoid the requirement to clock switch. We also have to load the timing
670 * into the right clock according to whether we are master or slave.
672 * In dual channel mode the 6580 has one clock per channel and we have
673 * to software clockswitch in qc_issue.
676 static void qdi65x0_set_piomode(struct ata_port *ap, struct ata_device *adev)
679 struct legacy_data *ld_qdi = ap->host->private_data;
680 int active, recovery;
683 /* Get the timing data in cycles */
684 ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
687 active = 8 - clamp_val(t.active, 1, 8);
688 recovery = 18 - clamp_val(t.recover, 3, 18);
690 active = 9 - clamp_val(t.active, 2, 9);
691 recovery = 15 - clamp_val(t.recover, 0, 15);
693 timing = (recovery << 4) | active | 0x08;
694 ld_qdi->clock[adev->devno] = timing;
696 if (ld_qdi->type == QDI6580)
697 outb(timing, ld_qdi->timing + 2 * adev->devno);
699 outb(timing, ld_qdi->timing + 2 * ap->port_no);
702 if (ld_qdi->type != QDI6500 && adev->class != ATA_DEV_ATA)
703 outb(0x5F, (ld_qdi->timing & 0xFFF0) + 3);
707 * qdi_qc_issue - command issue
708 * @qc: command pending
710 * Called when the libata layer is about to issue a command. We wrap
711 * this interface so that we can load the correct ATA timings.
714 static unsigned int qdi_qc_issue(struct ata_queued_cmd *qc)
716 struct ata_port *ap = qc->ap;
717 struct ata_device *adev = qc->dev;
718 struct legacy_data *ld_qdi = ap->host->private_data;
720 if (ld_qdi->clock[adev->devno] != ld_qdi->last) {
721 if (adev->pio_mode) {
722 ld_qdi->last = ld_qdi->clock[adev->devno];
723 outb(ld_qdi->clock[adev->devno], ld_qdi->timing +
727 return ata_sff_qc_issue(qc);
730 static unsigned int vlb32_data_xfer(struct ata_queued_cmd *qc,
732 unsigned int buflen, int rw)
734 struct ata_device *adev = qc->dev;
735 struct ata_port *ap = adev->link->ap;
736 int slop = buflen & 3;
738 if (ata_id_has_dword_io(adev->id) && (slop == 0 || slop == 3)
739 && (ap->pflags & ATA_PFLAG_PIO32)) {
741 iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
743 ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
745 if (unlikely(slop)) {
749 memcpy(&pad, buf + buflen - slop, slop);
750 iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr);
752 pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr));
753 memcpy(buf + buflen - slop, &pad, slop);
756 return (buflen + 3) & ~3;
758 return ata_sff_data_xfer(qc, buf, buflen, rw);
761 static int qdi_port(struct platform_device *dev,
762 struct legacy_probe *lp, struct legacy_data *ld)
764 if (devm_request_region(&dev->dev, lp->private, 4, "qdi") == NULL)
766 ld->timing = lp->private;
770 static struct ata_port_operations qdi6500_port_ops = {
771 .inherits = &legacy_base_port_ops,
772 .set_piomode = qdi65x0_set_piomode,
773 .qc_issue = qdi_qc_issue,
774 .sff_data_xfer = vlb32_data_xfer,
777 static struct ata_port_operations qdi6580_port_ops = {
778 .inherits = &legacy_base_port_ops,
779 .set_piomode = qdi65x0_set_piomode,
780 .sff_data_xfer = vlb32_data_xfer,
783 static struct ata_port_operations qdi6580dp_port_ops = {
784 .inherits = &legacy_base_port_ops,
785 .set_piomode = qdi65x0_set_piomode,
786 .qc_issue = qdi_qc_issue,
787 .sff_data_xfer = vlb32_data_xfer,
790 static DEFINE_SPINLOCK(winbond_lock);
792 static void winbond_writecfg(unsigned long port, u8 reg, u8 val)
795 spin_lock_irqsave(&winbond_lock, flags);
796 outb(reg, port + 0x01);
797 outb(val, port + 0x02);
798 spin_unlock_irqrestore(&winbond_lock, flags);
801 static u8 winbond_readcfg(unsigned long port, u8 reg)
806 spin_lock_irqsave(&winbond_lock, flags);
807 outb(reg, port + 0x01);
808 val = inb(port + 0x02);
809 spin_unlock_irqrestore(&winbond_lock, flags);
814 static void winbond_set_piomode(struct ata_port *ap, struct ata_device *adev)
817 struct legacy_data *ld_winbond = ap->host->private_data;
818 int active, recovery;
820 int timing = 0x88 + (ap->port_no * 4) + (adev->devno * 2);
822 reg = winbond_readcfg(ld_winbond->timing, 0x81);
824 /* Get the timing data in cycles */
825 if (reg & 0x40) /* Fast VLB bus, assume 50MHz */
826 ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
828 ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
830 active = (clamp_val(t.active, 3, 17) - 1) & 0x0F;
831 recovery = (clamp_val(t.recover, 1, 15) + 1) & 0x0F;
832 timing = (active << 4) | recovery;
833 winbond_writecfg(ld_winbond->timing, timing, reg);
835 /* Load the setup timing */
838 if (adev->class != ATA_DEV_ATA)
839 reg |= 0x08; /* FIFO off */
840 if (!ata_pio_need_iordy(adev))
841 reg |= 0x02; /* IORDY off */
842 reg |= (clamp_val(t.setup, 0, 3) << 6);
843 winbond_writecfg(ld_winbond->timing, timing + 1, reg);
846 static int winbond_port(struct platform_device *dev,
847 struct legacy_probe *lp, struct legacy_data *ld)
849 if (devm_request_region(&dev->dev, lp->private, 4, "winbond") == NULL)
851 ld->timing = lp->private;
855 static struct ata_port_operations winbond_port_ops = {
856 .inherits = &legacy_base_port_ops,
857 .set_piomode = winbond_set_piomode,
858 .sff_data_xfer = vlb32_data_xfer,
861 static struct legacy_controller controllers[] = {
862 {"BIOS", &legacy_port_ops, ATA_PIO4,
863 ATA_FLAG_NO_IORDY, 0, NULL },
864 {"Snooping", &simple_port_ops, ATA_PIO4,
866 {"PDC20230", &pdc20230_port_ops, ATA_PIO2,
868 ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, NULL },
869 {"HT6560A", &ht6560a_port_ops, ATA_PIO2,
870 ATA_FLAG_NO_IORDY, 0, NULL },
871 {"HT6560B", &ht6560b_port_ops, ATA_PIO4,
872 ATA_FLAG_NO_IORDY, 0, NULL },
873 {"OPTI82C611A", &opti82c611a_port_ops, ATA_PIO3,
875 {"OPTI82C46X", &opti82c46x_port_ops, ATA_PIO3,
877 {"QDI6500", &qdi6500_port_ops, ATA_PIO2,
879 ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, qdi_port },
880 {"QDI6580", &qdi6580_port_ops, ATA_PIO4,
881 0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, qdi_port },
882 {"QDI6580DP", &qdi6580dp_port_ops, ATA_PIO4,
883 0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, qdi_port },
884 {"W83759A", &winbond_port_ops, ATA_PIO4,
885 0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE,
890 * probe_chip_type - Discover controller
891 * @probe: Probe entry to check
893 * Probe an ATA port and identify the type of controller. We don't
894 * check if the controller appears to be driveless at this point.
897 static __init int probe_chip_type(struct legacy_probe *probe)
899 int mask = 1 << probe->slot;
901 if (winbond && (probe->port == 0x1F0 || probe->port == 0x170)) {
902 u8 reg = winbond_readcfg(winbond, 0x81);
903 reg |= 0x80; /* jumpered mode off */
904 winbond_writecfg(winbond, 0x81, reg);
905 reg = winbond_readcfg(winbond, 0x83);
906 reg |= 0xF0; /* local control */
907 winbond_writecfg(winbond, 0x83, reg);
908 reg = winbond_readcfg(winbond, 0x85);
909 reg |= 0xF0; /* programmable timing */
910 winbond_writecfg(winbond, 0x85, reg);
912 reg = winbond_readcfg(winbond, 0x81);
917 if (probe->port == 0x1F0) {
919 local_irq_save(flags);
921 outb(inb(0x1F2) | 0x80, 0x1F2);
929 if ((inb(0x1F2) & 0x80) == 0) {
930 /* PDC20230c or 20630 ? */
931 printk(KERN_INFO "PDC20230-C/20630 VLB ATA controller"
935 local_irq_restore(flags);
941 if (inb(0x1F2) == 0x00)
942 printk(KERN_INFO "PDC20230-B VLB ATA "
943 "controller detected.\n");
944 local_irq_restore(flags);
953 if (opti82c611a & mask)
955 if (opti82c46x & mask)
957 if (autospeed & mask)
964 * legacy_init_one - attach a legacy interface
965 * @probe: probe record
967 * Register an ISA bus IDE interface. Such interfaces are PIO and we
968 * assume do not support IRQ sharing.
971 static __init int legacy_init_one(struct legacy_probe *probe)
973 struct legacy_controller *controller = &controllers[probe->type];
974 int pio_modes = controller->pio_mask;
975 unsigned long io = probe->port;
976 u32 mask = (1 << probe->slot);
977 struct ata_port_operations *ops = controller->ops;
978 struct legacy_data *ld = &legacy_data[probe->slot];
979 struct ata_host *host = NULL;
981 struct platform_device *pdev;
982 struct ata_device *dev;
983 void __iomem *io_addr, *ctrl_addr;
984 u32 iordy = (iordy_mask & mask) ? 0: ATA_FLAG_NO_IORDY;
987 iordy |= controller->flags;
989 pdev = platform_device_register_simple(DRV_NAME, probe->slot, NULL, 0);
991 return PTR_ERR(pdev);
994 if (devm_request_region(&pdev->dev, io, 8, "pata_legacy") == NULL ||
995 devm_request_region(&pdev->dev, io + 0x0206, 1,
996 "pata_legacy") == NULL)
1000 io_addr = devm_ioport_map(&pdev->dev, io, 8);
1001 ctrl_addr = devm_ioport_map(&pdev->dev, io + 0x0206, 1);
1002 if (!io_addr || !ctrl_addr)
1004 ld->type = probe->type;
1005 if (controller->setup)
1006 if (controller->setup(pdev, probe, ld) < 0)
1008 host = ata_host_alloc(&pdev->dev, 1);
1011 ap = host->ports[0];
1014 ap->pio_mask = pio_modes;
1015 ap->flags |= ATA_FLAG_SLAVE_POSS | iordy;
1016 ap->pflags |= controller->pflags;
1017 ap->ioaddr.cmd_addr = io_addr;
1018 ap->ioaddr.altstatus_addr = ctrl_addr;
1019 ap->ioaddr.ctl_addr = ctrl_addr;
1020 ata_sff_std_ports(&ap->ioaddr);
1021 ap->host->private_data = ld;
1023 ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", io, io + 0x0206);
1025 ret = ata_host_activate(host, probe->irq, ata_sff_interrupt, 0,
1029 async_synchronize_full();
1030 ld->platform_dev = pdev;
1032 /* Nothing found means we drop the port as its probably not there */
1035 ata_for_each_dev(dev, &ap->link, ALL) {
1036 if (!ata_dev_absent(dev)) {
1037 legacy_host[probe->slot] = host;
1038 ld->platform_dev = pdev;
1042 ata_host_detach(host);
1044 platform_device_unregister(pdev);
1049 * legacy_check_special_cases - ATA special cases
1050 * @p: PCI device to check
1051 * @primary: set this if we find an ATA master
1052 * @secondary: set this if we find an ATA secondary
1054 * A small number of vendors implemented early PCI ATA interfaces
1055 * on bridge logic without the ATA interface being PCI visible.
1056 * Where we have a matching PCI driver we must skip the relevant
1057 * device here. If we don't know about it then the legacy driver
1058 * is the right driver anyway.
1061 static void __init legacy_check_special_cases(struct pci_dev *p, int *primary,
1064 /* Cyrix CS5510 pre SFF MWDMA ATA on the bridge */
1065 if (p->vendor == 0x1078 && p->device == 0x0000) {
1066 *primary = *secondary = 1;
1069 /* Cyrix CS5520 pre SFF MWDMA ATA on the bridge */
1070 if (p->vendor == 0x1078 && p->device == 0x0002) {
1071 *primary = *secondary = 1;
1074 /* Intel MPIIX - PIO ATA on non PCI side of bridge */
1075 if (p->vendor == 0x8086 && p->device == 0x1234) {
1077 pci_read_config_word(p, 0x6C, &r);
1079 /* ATA port enabled */
1089 static __init void probe_opti_vlb(void)
1091 /* If an OPTI 82C46X is present find out where the channels are */
1092 static const char *optis[4] = {
1097 u8 ctrl = (opti_syscfg(0x30) & 0xC0) >> 6;
1099 opti82c46x = 3; /* Assume master and slave first */
1100 printk(KERN_INFO DRV_NAME ": Opti 82C46%s chipset support.\n",
1103 chans = (opti_syscfg(0x3F) & 0x20) ? 2 : 1;
1104 ctrl = opti_syscfg(0xAC);
1105 /* Check enabled and this port is the 465MV port. On the
1106 MVB we may have two channels */
1109 legacy_probe_add(0x1F0, 14, OPTI46X, 0);
1110 legacy_probe_add(0x170, 15, OPTI46X, 0);
1113 legacy_probe_add(0x170, 15, OPTI46X, 0);
1115 legacy_probe_add(0x1F0, 14, OPTI46X, 0);
1117 legacy_probe_add(0x1F0, 14, OPTI46X, 0);
1120 static __init void qdi65_identify_port(u8 r, u8 res, unsigned long port)
1122 static const unsigned long ide_port[2] = { 0x170, 0x1F0 };
1123 /* Check card type */
1124 if ((r & 0xF0) == 0xC0) {
1125 /* QD6500: single channel */
1129 legacy_probe_add(ide_port[r & 0x01], 14 + (r & 0x01),
1132 if (((r & 0xF0) == 0xA0) || (r & 0xF0) == 0x50) {
1133 /* QD6580: dual channel */
1134 if (!request_region(port + 2 , 2, "pata_qdi")) {
1135 release_region(port, 2);
1138 res = inb(port + 3);
1139 /* Single channel mode ? */
1141 legacy_probe_add(ide_port[r & 0x01], 14 + (r & 0x01),
1143 else { /* Dual channel mode */
1144 legacy_probe_add(0x1F0, 14, QDI6580DP, port);
1145 /* port + 0x02, r & 0x04 */
1146 legacy_probe_add(0x170, 15, QDI6580DP, port + 2);
1148 release_region(port + 2, 2);
1152 static __init void probe_qdi_vlb(void)
1154 unsigned long flags;
1155 static const unsigned long qd_port[2] = { 0x30, 0xB0 };
1159 * Check each possible QD65xx base address
1162 for (i = 0; i < 2; i++) {
1163 unsigned long port = qd_port[i];
1167 if (request_region(port, 2, "pata_qdi")) {
1168 /* Check for a card */
1169 local_irq_save(flags);
1170 /* I have no h/w that needs this delay but it
1171 is present in the historic code */
1180 local_irq_restore(flags);
1184 release_region(port, 2);
1187 /* Passes the presence test */
1190 /* Check port agrees with port set */
1191 if ((r & 2) >> 1 == i)
1192 qdi65_identify_port(r, res, port);
1193 release_region(port, 2);
1199 * legacy_init - attach legacy interfaces
1201 * Attach legacy IDE interfaces by scanning the usual IRQ/port suspects.
1202 * Right now we do not scan the ide0 and ide1 address but should do so
1203 * for non PCI systems or systems with no PCI IDE legacy mode devices.
1204 * If you fix that note there are special cases to consider like VLB
1205 * drivers and CS5510/20.
1208 static __init int legacy_init(void)
1214 int pci_present = 0;
1215 struct legacy_probe *pl = &probe_list[0];
1218 struct pci_dev *p = NULL;
1220 for_each_pci_dev(p) {
1222 /* Check for any overlap of the system ATA mappings. Native
1223 mode controllers stuck on these addresses or some devices
1224 in 'raid' mode won't be found by the storage class test */
1225 for (r = 0; r < 6; r++) {
1226 if (pci_resource_start(p, r) == 0x1f0)
1228 if (pci_resource_start(p, r) == 0x170)
1231 /* Check for special cases */
1232 legacy_check_special_cases(p, &primary, &secondary);
1234 /* If PCI bus is present then don't probe for tertiary
1240 winbond = 0x130; /* Default port, alt is 1B0 */
1242 if (primary == 0 || all)
1243 legacy_probe_add(0x1F0, 14, UNKNOWN, 0);
1244 if (secondary == 0 || all)
1245 legacy_probe_add(0x170, 15, UNKNOWN, 0);
1247 if (probe_all || !pci_present) {
1248 /* ISA/VLB extra ports */
1249 legacy_probe_add(0x1E8, 11, UNKNOWN, 0);
1250 legacy_probe_add(0x168, 10, UNKNOWN, 0);
1251 legacy_probe_add(0x1E0, 8, UNKNOWN, 0);
1252 legacy_probe_add(0x160, 12, UNKNOWN, 0);
1260 for (i = 0; i < NR_HOST; i++, pl++) {
1263 if (pl->type == UNKNOWN)
1264 pl->type = probe_chip_type(pl);
1266 if (legacy_init_one(pl) == 0)
1274 static __exit void legacy_exit(void)
1278 for (i = 0; i < nr_legacy_host; i++) {
1279 struct legacy_data *ld = &legacy_data[i];
1280 ata_host_detach(legacy_host[i]);
1281 platform_device_unregister(ld->platform_dev);
1285 MODULE_AUTHOR("Alan Cox");
1286 MODULE_DESCRIPTION("low-level driver for legacy ATA");
1287 MODULE_LICENSE("GPL");
1288 MODULE_VERSION(DRV_VERSION);
1289 MODULE_ALIAS("pata_qdi");
1290 MODULE_ALIAS("pata_winbond");
1292 module_init(legacy_init);
1293 module_exit(legacy_exit);