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
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)) {
357 pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr));
358 memcpy(buf + buflen - slop, &pad, slop);
360 memcpy(&pad, buf + buflen - slop, slop);
361 iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr);
365 local_irq_restore(flags);
367 buflen = ata_sff_data_xfer32(qc, buf, buflen, rw);
372 static struct ata_port_operations pdc20230_port_ops = {
373 .inherits = &legacy_base_port_ops,
374 .set_piomode = pdc20230_set_piomode,
375 .sff_data_xfer = pdc_data_xfer_vlb,
379 * Holtek 6560A support
381 * This controller supports PIO0 to PIO2 (no IORDY even though higher
382 * timings can be loaded).
385 static void ht6560a_set_piomode(struct ata_port *ap, struct ata_device *adev)
390 /* Get the timing data in cycles. For now play safe at 50Mhz */
391 ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
393 active = clamp_val(t.active, 2, 15);
394 recover = clamp_val(t.recover, 4, 15);
401 iowrite8(recover << 4 | active, ap->ioaddr.device_addr);
402 ioread8(ap->ioaddr.status_addr);
405 static struct ata_port_operations ht6560a_port_ops = {
406 .inherits = &legacy_base_port_ops,
407 .set_piomode = ht6560a_set_piomode,
411 * Holtek 6560B support
413 * This controller supports PIO0 to PIO4. We honour the BIOS/jumper FIFO
414 * setting unless we see an ATAPI device in which case we force it off.
416 * FIXME: need to implement 2nd channel support.
419 static void ht6560b_set_piomode(struct ata_port *ap, struct ata_device *adev)
424 /* Get the timing data in cycles. For now play safe at 50Mhz */
425 ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
427 active = clamp_val(t.active, 2, 15);
428 recover = clamp_val(t.recover, 2, 16) & 0x0F;
435 iowrite8(recover << 4 | active, ap->ioaddr.device_addr);
437 if (adev->class != ATA_DEV_ATA) {
438 u8 rconf = inb(0x3E6);
444 ioread8(ap->ioaddr.status_addr);
447 static struct ata_port_operations ht6560b_port_ops = {
448 .inherits = &legacy_base_port_ops,
449 .set_piomode = ht6560b_set_piomode,
453 * Opti core chipset helpers
457 * opti_syscfg - read OPTI chipset configuration
458 * @reg: Configuration register to read
460 * Returns the value of an OPTI system board configuration register.
463 static u8 opti_syscfg(u8 reg)
468 /* Uniprocessor chipset and must force cycles adjancent */
469 local_irq_save(flags);
472 local_irq_restore(flags);
479 * This controller supports PIO0 to PIO3.
482 static void opti82c611a_set_piomode(struct ata_port *ap,
483 struct ata_device *adev)
485 u8 active, recover, setup;
487 struct ata_device *pair = ata_dev_pair(adev);
489 int khz[4] = { 50000, 40000, 33000, 25000 };
492 /* Enter configuration mode */
493 ioread16(ap->ioaddr.error_addr);
494 ioread16(ap->ioaddr.error_addr);
495 iowrite8(3, ap->ioaddr.nsect_addr);
497 /* Read VLB clock strapping */
498 clock = 1000000000 / khz[ioread8(ap->ioaddr.lbah_addr) & 0x03];
500 /* Get the timing data in cycles */
501 ata_timing_compute(adev, adev->pio_mode, &t, clock, 1000);
503 /* Setup timing is shared */
505 struct ata_timing tp;
506 ata_timing_compute(pair, pair->pio_mode, &tp, clock, 1000);
508 ata_timing_merge(&t, &tp, &t, ATA_TIMING_SETUP);
511 active = clamp_val(t.active, 2, 17) - 2;
512 recover = clamp_val(t.recover, 1, 16) - 1;
513 setup = clamp_val(t.setup, 1, 4) - 1;
515 /* Select the right timing bank for write timing */
516 rc = ioread8(ap->ioaddr.lbal_addr);
518 rc |= (adev->devno << 7);
519 iowrite8(rc, ap->ioaddr.lbal_addr);
521 /* Write the timings */
522 iowrite8(active << 4 | recover, ap->ioaddr.error_addr);
524 /* Select the right bank for read timings, also
525 load the shared timings for address */
526 rc = ioread8(ap->ioaddr.device_addr);
528 rc |= adev->devno; /* Index select */
529 rc |= (setup << 4) | 0x04;
530 iowrite8(rc, ap->ioaddr.device_addr);
532 /* Load the read timings */
533 iowrite8(active << 4 | recover, ap->ioaddr.data_addr);
535 /* Ensure the timing register mode is right */
536 rc = ioread8(ap->ioaddr.lbal_addr);
539 iowrite8(rc, ap->ioaddr.lbal_addr);
541 /* Exit command mode */
542 iowrite8(0x83, ap->ioaddr.nsect_addr);
546 static struct ata_port_operations opti82c611a_port_ops = {
547 .inherits = &legacy_base_port_ops,
548 .set_piomode = opti82c611a_set_piomode,
554 * This controller supports PIO0 to PIO3. Unlike the 611A the MVB
555 * version is dual channel but doesn't have a lot of unique registers.
558 static void opti82c46x_set_piomode(struct ata_port *ap, struct ata_device *adev)
560 u8 active, recover, setup;
562 struct ata_device *pair = ata_dev_pair(adev);
564 int khz[4] = { 50000, 40000, 33000, 25000 };
569 sysclk = (opti_syscfg(0xAC) & 0xC0) >> 6; /* BIOS set */
571 /* Enter configuration mode */
572 ioread16(ap->ioaddr.error_addr);
573 ioread16(ap->ioaddr.error_addr);
574 iowrite8(3, ap->ioaddr.nsect_addr);
576 /* Read VLB clock strapping */
577 clock = 1000000000 / khz[sysclk];
579 /* Get the timing data in cycles */
580 ata_timing_compute(adev, adev->pio_mode, &t, clock, 1000);
582 /* Setup timing is shared */
584 struct ata_timing tp;
585 ata_timing_compute(pair, pair->pio_mode, &tp, clock, 1000);
587 ata_timing_merge(&t, &tp, &t, ATA_TIMING_SETUP);
590 active = clamp_val(t.active, 2, 17) - 2;
591 recover = clamp_val(t.recover, 1, 16) - 1;
592 setup = clamp_val(t.setup, 1, 4) - 1;
594 /* Select the right timing bank for write timing */
595 rc = ioread8(ap->ioaddr.lbal_addr);
597 rc |= (adev->devno << 7);
598 iowrite8(rc, ap->ioaddr.lbal_addr);
600 /* Write the timings */
601 iowrite8(active << 4 | recover, ap->ioaddr.error_addr);
603 /* Select the right bank for read timings, also
604 load the shared timings for address */
605 rc = ioread8(ap->ioaddr.device_addr);
607 rc |= adev->devno; /* Index select */
608 rc |= (setup << 4) | 0x04;
609 iowrite8(rc, ap->ioaddr.device_addr);
611 /* Load the read timings */
612 iowrite8(active << 4 | recover, ap->ioaddr.data_addr);
614 /* Ensure the timing register mode is right */
615 rc = ioread8(ap->ioaddr.lbal_addr);
618 iowrite8(rc, ap->ioaddr.lbal_addr);
620 /* Exit command mode */
621 iowrite8(0x83, ap->ioaddr.nsect_addr);
623 /* We need to know this for quad device on the MVB */
624 ap->host->private_data = ap;
628 * opti82c46x_qc_issue - command issue
629 * @qc: command pending
631 * Called when the libata layer is about to issue a command. We wrap
632 * this interface so that we can load the correct ATA timings. The
633 * MVB has a single set of timing registers and these are shared
634 * across channels. As there are two registers we really ought to
635 * track the last two used values as a sort of register window. For
636 * now we just reload on a channel switch. On the single channel
637 * setup this condition never fires so we do nothing extra.
639 * FIXME: dual channel needs ->serialize support
642 static unsigned int opti82c46x_qc_issue(struct ata_queued_cmd *qc)
644 struct ata_port *ap = qc->ap;
645 struct ata_device *adev = qc->dev;
647 /* If timings are set and for the wrong channel (2nd test is
648 due to a libata shortcoming and will eventually go I hope) */
649 if (ap->host->private_data != ap->host
650 && ap->host->private_data != NULL)
651 opti82c46x_set_piomode(ap, adev);
653 return ata_sff_qc_issue(qc);
656 static struct ata_port_operations opti82c46x_port_ops = {
657 .inherits = &legacy_base_port_ops,
658 .set_piomode = opti82c46x_set_piomode,
659 .qc_issue = opti82c46x_qc_issue,
663 * qdi65x0_set_piomode - PIO setup for QDI65x0
667 * In single channel mode the 6580 has one clock per device and we can
668 * avoid the requirement to clock switch. We also have to load the timing
669 * into the right clock according to whether we are master or slave.
671 * In dual channel mode the 6580 has one clock per channel and we have
672 * to software clockswitch in qc_issue.
675 static void qdi65x0_set_piomode(struct ata_port *ap, struct ata_device *adev)
678 struct legacy_data *ld_qdi = ap->host->private_data;
679 int active, recovery;
682 /* Get the timing data in cycles */
683 ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
686 active = 8 - clamp_val(t.active, 1, 8);
687 recovery = 18 - clamp_val(t.recover, 3, 18);
689 active = 9 - clamp_val(t.active, 2, 9);
690 recovery = 15 - clamp_val(t.recover, 0, 15);
692 timing = (recovery << 4) | active | 0x08;
693 ld_qdi->clock[adev->devno] = timing;
695 if (ld_qdi->type == QDI6580)
696 outb(timing, ld_qdi->timing + 2 * adev->devno);
698 outb(timing, ld_qdi->timing + 2 * ap->port_no);
701 if (ld_qdi->type != QDI6500 && adev->class != ATA_DEV_ATA)
702 outb(0x5F, (ld_qdi->timing & 0xFFF0) + 3);
706 * qdi_qc_issue - command issue
707 * @qc: command pending
709 * Called when the libata layer is about to issue a command. We wrap
710 * this interface so that we can load the correct ATA timings.
713 static unsigned int qdi_qc_issue(struct ata_queued_cmd *qc)
715 struct ata_port *ap = qc->ap;
716 struct ata_device *adev = qc->dev;
717 struct legacy_data *ld_qdi = ap->host->private_data;
719 if (ld_qdi->clock[adev->devno] != ld_qdi->last) {
720 if (adev->pio_mode) {
721 ld_qdi->last = ld_qdi->clock[adev->devno];
722 outb(ld_qdi->clock[adev->devno], ld_qdi->timing +
726 return ata_sff_qc_issue(qc);
729 static unsigned int vlb32_data_xfer(struct ata_queued_cmd *qc,
731 unsigned int buflen, int rw)
733 struct ata_device *adev = qc->dev;
734 struct ata_port *ap = adev->link->ap;
735 int slop = buflen & 3;
737 if (ata_id_has_dword_io(adev->id) && (slop == 0 || slop == 3)
738 && (ap->pflags & ATA_PFLAG_PIO32)) {
740 iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
742 ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
744 if (unlikely(slop)) {
747 memcpy(&pad, buf + buflen - slop, slop);
748 iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr);
750 pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr));
751 memcpy(buf + buflen - slop, &pad, slop);
754 return (buflen + 3) & ~3;
756 return ata_sff_data_xfer(qc, buf, buflen, rw);
759 static int qdi_port(struct platform_device *dev,
760 struct legacy_probe *lp, struct legacy_data *ld)
762 if (devm_request_region(&dev->dev, lp->private, 4, "qdi") == NULL)
764 ld->timing = lp->private;
768 static struct ata_port_operations qdi6500_port_ops = {
769 .inherits = &legacy_base_port_ops,
770 .set_piomode = qdi65x0_set_piomode,
771 .qc_issue = qdi_qc_issue,
772 .sff_data_xfer = vlb32_data_xfer,
775 static struct ata_port_operations qdi6580_port_ops = {
776 .inherits = &legacy_base_port_ops,
777 .set_piomode = qdi65x0_set_piomode,
778 .sff_data_xfer = vlb32_data_xfer,
781 static struct ata_port_operations qdi6580dp_port_ops = {
782 .inherits = &legacy_base_port_ops,
783 .set_piomode = qdi65x0_set_piomode,
784 .qc_issue = qdi_qc_issue,
785 .sff_data_xfer = vlb32_data_xfer,
788 static DEFINE_SPINLOCK(winbond_lock);
790 static void winbond_writecfg(unsigned long port, u8 reg, u8 val)
793 spin_lock_irqsave(&winbond_lock, flags);
794 outb(reg, port + 0x01);
795 outb(val, port + 0x02);
796 spin_unlock_irqrestore(&winbond_lock, flags);
799 static u8 winbond_readcfg(unsigned long port, u8 reg)
804 spin_lock_irqsave(&winbond_lock, flags);
805 outb(reg, port + 0x01);
806 val = inb(port + 0x02);
807 spin_unlock_irqrestore(&winbond_lock, flags);
812 static void winbond_set_piomode(struct ata_port *ap, struct ata_device *adev)
815 struct legacy_data *ld_winbond = ap->host->private_data;
816 int active, recovery;
818 int timing = 0x88 + (ap->port_no * 4) + (adev->devno * 2);
820 reg = winbond_readcfg(ld_winbond->timing, 0x81);
822 /* Get the timing data in cycles */
823 if (reg & 0x40) /* Fast VLB bus, assume 50MHz */
824 ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
826 ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
828 active = (clamp_val(t.active, 3, 17) - 1) & 0x0F;
829 recovery = (clamp_val(t.recover, 1, 15) + 1) & 0x0F;
830 timing = (active << 4) | recovery;
831 winbond_writecfg(ld_winbond->timing, timing, reg);
833 /* Load the setup timing */
836 if (adev->class != ATA_DEV_ATA)
837 reg |= 0x08; /* FIFO off */
838 if (!ata_pio_need_iordy(adev))
839 reg |= 0x02; /* IORDY off */
840 reg |= (clamp_val(t.setup, 0, 3) << 6);
841 winbond_writecfg(ld_winbond->timing, timing + 1, reg);
844 static int winbond_port(struct platform_device *dev,
845 struct legacy_probe *lp, struct legacy_data *ld)
847 if (devm_request_region(&dev->dev, lp->private, 4, "winbond") == NULL)
849 ld->timing = lp->private;
853 static struct ata_port_operations winbond_port_ops = {
854 .inherits = &legacy_base_port_ops,
855 .set_piomode = winbond_set_piomode,
856 .sff_data_xfer = vlb32_data_xfer,
859 static struct legacy_controller controllers[] = {
860 {"BIOS", &legacy_port_ops, ATA_PIO4,
861 ATA_FLAG_NO_IORDY, 0, NULL },
862 {"Snooping", &simple_port_ops, ATA_PIO4,
864 {"PDC20230", &pdc20230_port_ops, ATA_PIO2,
866 ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, NULL },
867 {"HT6560A", &ht6560a_port_ops, ATA_PIO2,
868 ATA_FLAG_NO_IORDY, 0, NULL },
869 {"HT6560B", &ht6560b_port_ops, ATA_PIO4,
870 ATA_FLAG_NO_IORDY, 0, NULL },
871 {"OPTI82C611A", &opti82c611a_port_ops, ATA_PIO3,
873 {"OPTI82C46X", &opti82c46x_port_ops, ATA_PIO3,
875 {"QDI6500", &qdi6500_port_ops, ATA_PIO2,
877 ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, qdi_port },
878 {"QDI6580", &qdi6580_port_ops, ATA_PIO4,
879 0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, qdi_port },
880 {"QDI6580DP", &qdi6580dp_port_ops, ATA_PIO4,
881 0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, qdi_port },
882 {"W83759A", &winbond_port_ops, ATA_PIO4,
883 0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE,
888 * probe_chip_type - Discover controller
889 * @probe: Probe entry to check
891 * Probe an ATA port and identify the type of controller. We don't
892 * check if the controller appears to be driveless at this point.
895 static __init int probe_chip_type(struct legacy_probe *probe)
897 int mask = 1 << probe->slot;
899 if (winbond && (probe->port == 0x1F0 || probe->port == 0x170)) {
900 u8 reg = winbond_readcfg(winbond, 0x81);
901 reg |= 0x80; /* jumpered mode off */
902 winbond_writecfg(winbond, 0x81, reg);
903 reg = winbond_readcfg(winbond, 0x83);
904 reg |= 0xF0; /* local control */
905 winbond_writecfg(winbond, 0x83, reg);
906 reg = winbond_readcfg(winbond, 0x85);
907 reg |= 0xF0; /* programmable timing */
908 winbond_writecfg(winbond, 0x85, reg);
910 reg = winbond_readcfg(winbond, 0x81);
915 if (probe->port == 0x1F0) {
917 local_irq_save(flags);
919 outb(inb(0x1F2) | 0x80, 0x1F2);
927 if ((inb(0x1F2) & 0x80) == 0) {
928 /* PDC20230c or 20630 ? */
929 printk(KERN_INFO "PDC20230-C/20630 VLB ATA controller"
933 local_irq_restore(flags);
939 if (inb(0x1F2) == 0x00)
940 printk(KERN_INFO "PDC20230-B VLB ATA "
941 "controller detected.\n");
942 local_irq_restore(flags);
951 if (opti82c611a & mask)
953 if (opti82c46x & mask)
955 if (autospeed & mask)
962 * legacy_init_one - attach a legacy interface
963 * @probe: probe record
965 * Register an ISA bus IDE interface. Such interfaces are PIO and we
966 * assume do not support IRQ sharing.
969 static __init int legacy_init_one(struct legacy_probe *probe)
971 struct legacy_controller *controller = &controllers[probe->type];
972 int pio_modes = controller->pio_mask;
973 unsigned long io = probe->port;
974 u32 mask = (1 << probe->slot);
975 struct ata_port_operations *ops = controller->ops;
976 struct legacy_data *ld = &legacy_data[probe->slot];
977 struct ata_host *host = NULL;
979 struct platform_device *pdev;
980 struct ata_device *dev;
981 void __iomem *io_addr, *ctrl_addr;
982 u32 iordy = (iordy_mask & mask) ? 0: ATA_FLAG_NO_IORDY;
985 iordy |= controller->flags;
987 pdev = platform_device_register_simple(DRV_NAME, probe->slot, NULL, 0);
989 return PTR_ERR(pdev);
992 if (devm_request_region(&pdev->dev, io, 8, "pata_legacy") == NULL ||
993 devm_request_region(&pdev->dev, io + 0x0206, 1,
994 "pata_legacy") == NULL)
998 io_addr = devm_ioport_map(&pdev->dev, io, 8);
999 ctrl_addr = devm_ioport_map(&pdev->dev, io + 0x0206, 1);
1000 if (!io_addr || !ctrl_addr)
1002 ld->type = probe->type;
1003 if (controller->setup)
1004 if (controller->setup(pdev, probe, ld) < 0)
1006 host = ata_host_alloc(&pdev->dev, 1);
1009 ap = host->ports[0];
1012 ap->pio_mask = pio_modes;
1013 ap->flags |= ATA_FLAG_SLAVE_POSS | iordy;
1014 ap->pflags |= controller->pflags;
1015 ap->ioaddr.cmd_addr = io_addr;
1016 ap->ioaddr.altstatus_addr = ctrl_addr;
1017 ap->ioaddr.ctl_addr = ctrl_addr;
1018 ata_sff_std_ports(&ap->ioaddr);
1019 ap->host->private_data = ld;
1021 ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", io, io + 0x0206);
1023 ret = ata_host_activate(host, probe->irq, ata_sff_interrupt, 0,
1027 async_synchronize_full();
1028 ld->platform_dev = pdev;
1030 /* Nothing found means we drop the port as its probably not there */
1033 ata_for_each_dev(dev, &ap->link, ALL) {
1034 if (!ata_dev_absent(dev)) {
1035 legacy_host[probe->slot] = host;
1036 ld->platform_dev = pdev;
1040 ata_host_detach(host);
1042 platform_device_unregister(pdev);
1047 * legacy_check_special_cases - ATA special cases
1048 * @p: PCI device to check
1049 * @primary: set this if we find an ATA master
1050 * @secondary: set this if we find an ATA secondary
1052 * A small number of vendors implemented early PCI ATA interfaces
1053 * on bridge logic without the ATA interface being PCI visible.
1054 * Where we have a matching PCI driver we must skip the relevant
1055 * device here. If we don't know about it then the legacy driver
1056 * is the right driver anyway.
1059 static void __init legacy_check_special_cases(struct pci_dev *p, int *primary,
1062 /* Cyrix CS5510 pre SFF MWDMA ATA on the bridge */
1063 if (p->vendor == 0x1078 && p->device == 0x0000) {
1064 *primary = *secondary = 1;
1067 /* Cyrix CS5520 pre SFF MWDMA ATA on the bridge */
1068 if (p->vendor == 0x1078 && p->device == 0x0002) {
1069 *primary = *secondary = 1;
1072 /* Intel MPIIX - PIO ATA on non PCI side of bridge */
1073 if (p->vendor == 0x8086 && p->device == 0x1234) {
1075 pci_read_config_word(p, 0x6C, &r);
1077 /* ATA port enabled */
1087 static __init void probe_opti_vlb(void)
1089 /* If an OPTI 82C46X is present find out where the channels are */
1090 static const char *optis[4] = {
1095 u8 ctrl = (opti_syscfg(0x30) & 0xC0) >> 6;
1097 opti82c46x = 3; /* Assume master and slave first */
1098 printk(KERN_INFO DRV_NAME ": Opti 82C46%s chipset support.\n",
1101 chans = (opti_syscfg(0x3F) & 0x20) ? 2 : 1;
1102 ctrl = opti_syscfg(0xAC);
1103 /* Check enabled and this port is the 465MV port. On the
1104 MVB we may have two channels */
1107 legacy_probe_add(0x1F0, 14, OPTI46X, 0);
1108 legacy_probe_add(0x170, 15, OPTI46X, 0);
1111 legacy_probe_add(0x170, 15, OPTI46X, 0);
1113 legacy_probe_add(0x1F0, 14, OPTI46X, 0);
1115 legacy_probe_add(0x1F0, 14, OPTI46X, 0);
1118 static __init void qdi65_identify_port(u8 r, u8 res, unsigned long port)
1120 static const unsigned long ide_port[2] = { 0x170, 0x1F0 };
1121 /* Check card type */
1122 if ((r & 0xF0) == 0xC0) {
1123 /* QD6500: single channel */
1127 legacy_probe_add(ide_port[r & 0x01], 14 + (r & 0x01),
1130 if (((r & 0xF0) == 0xA0) || (r & 0xF0) == 0x50) {
1131 /* QD6580: dual channel */
1132 if (!request_region(port + 2 , 2, "pata_qdi")) {
1133 release_region(port, 2);
1136 res = inb(port + 3);
1137 /* Single channel mode ? */
1139 legacy_probe_add(ide_port[r & 0x01], 14 + (r & 0x01),
1141 else { /* Dual channel mode */
1142 legacy_probe_add(0x1F0, 14, QDI6580DP, port);
1143 /* port + 0x02, r & 0x04 */
1144 legacy_probe_add(0x170, 15, QDI6580DP, port + 2);
1146 release_region(port + 2, 2);
1150 static __init void probe_qdi_vlb(void)
1152 unsigned long flags;
1153 static const unsigned long qd_port[2] = { 0x30, 0xB0 };
1157 * Check each possible QD65xx base address
1160 for (i = 0; i < 2; i++) {
1161 unsigned long port = qd_port[i];
1165 if (request_region(port, 2, "pata_qdi")) {
1166 /* Check for a card */
1167 local_irq_save(flags);
1168 /* I have no h/w that needs this delay but it
1169 is present in the historic code */
1178 local_irq_restore(flags);
1182 release_region(port, 2);
1185 /* Passes the presence test */
1188 /* Check port agrees with port set */
1189 if ((r & 2) >> 1 == i)
1190 qdi65_identify_port(r, res, port);
1191 release_region(port, 2);
1197 * legacy_init - attach legacy interfaces
1199 * Attach legacy IDE interfaces by scanning the usual IRQ/port suspects.
1200 * Right now we do not scan the ide0 and ide1 address but should do so
1201 * for non PCI systems or systems with no PCI IDE legacy mode devices.
1202 * If you fix that note there are special cases to consider like VLB
1203 * drivers and CS5510/20.
1206 static __init int legacy_init(void)
1212 int pci_present = 0;
1213 struct legacy_probe *pl = &probe_list[0];
1216 struct pci_dev *p = NULL;
1218 for_each_pci_dev(p) {
1220 /* Check for any overlap of the system ATA mappings. Native
1221 mode controllers stuck on these addresses or some devices
1222 in 'raid' mode won't be found by the storage class test */
1223 for (r = 0; r < 6; r++) {
1224 if (pci_resource_start(p, r) == 0x1f0)
1226 if (pci_resource_start(p, r) == 0x170)
1229 /* Check for special cases */
1230 legacy_check_special_cases(p, &primary, &secondary);
1232 /* If PCI bus is present then don't probe for tertiary
1238 winbond = 0x130; /* Default port, alt is 1B0 */
1240 if (primary == 0 || all)
1241 legacy_probe_add(0x1F0, 14, UNKNOWN, 0);
1242 if (secondary == 0 || all)
1243 legacy_probe_add(0x170, 15, UNKNOWN, 0);
1245 if (probe_all || !pci_present) {
1246 /* ISA/VLB extra ports */
1247 legacy_probe_add(0x1E8, 11, UNKNOWN, 0);
1248 legacy_probe_add(0x168, 10, UNKNOWN, 0);
1249 legacy_probe_add(0x1E0, 8, UNKNOWN, 0);
1250 legacy_probe_add(0x160, 12, UNKNOWN, 0);
1258 for (i = 0; i < NR_HOST; i++, pl++) {
1261 if (pl->type == UNKNOWN)
1262 pl->type = probe_chip_type(pl);
1264 if (legacy_init_one(pl) == 0)
1272 static __exit void legacy_exit(void)
1276 for (i = 0; i < nr_legacy_host; i++) {
1277 struct legacy_data *ld = &legacy_data[i];
1278 ata_host_detach(legacy_host[i]);
1279 platform_device_unregister(ld->platform_dev);
1283 MODULE_AUTHOR("Alan Cox");
1284 MODULE_DESCRIPTION("low-level driver for legacy ATA");
1285 MODULE_LICENSE("GPL");
1286 MODULE_VERSION(DRV_VERSION);
1287 MODULE_ALIAS("pata_qdi");
1288 MODULE_ALIAS("pata_winbond");
1290 module_init(legacy_init);
1291 module_exit(legacy_exit);