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c82ee6d3 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
669a5db4 JG |
2 | /* |
3 | * pata-legacy.c - Legacy port PATA/SATA controller driver. | |
ab771630 | 4 | * Copyright 2005/2006 Red Hat, all rights reserved. |
669a5db4 | 5 | * |
669a5db4 JG |
6 | * An ATA driver for the legacy ATA ports. |
7 | * | |
8 | * Data Sources: | |
9 | * Opti 82C465/82C611 support: Data sheets at opti-inc.com | |
10 | * HT6560 series: | |
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 | |
9c7e0d22 BZ |
15 | * QDI65x0: |
16 | * http://www.ryston.cz/petr/vlb/qd6500.html | |
17 | * http://www.ryston.cz/petr/vlb/qd6580.html | |
18 | * | |
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> | |
669a5db4 JG |
22 | * |
23 | * Unsupported but docs exist: | |
24 | * Appian/Adaptec AIC25VL01/Cirrus Logic PD7220 | |
669a5db4 JG |
25 | * |
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". | |
30 | * | |
31 | * Specific support is included for the ht6560a/ht6560b/opti82c611a/ | |
9c7e0d22 | 32 | * opti82c465mv/promise 20230c/20630/qdi65x0/winbond83759A |
669a5db4 | 33 | * |
6d981b9a BZ |
34 | * Support for the Winbond 83759A when operating in advanced mode. |
35 | * Multichip mode is not currently supported. | |
36 | * | |
669a5db4 JG |
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 | |
42 | * | |
43 | * For now use autospeed and pio_mask as above with the W83759A. This may | |
44 | * change. | |
669a5db4 JG |
45 | */ |
46 | ||
45bc955b | 47 | #include <linux/async.h> |
669a5db4 JG |
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> | |
58 | ||
59 | #define DRV_NAME "pata_legacy" | |
b8325487 | 60 | #define DRV_VERSION "0.6.5" |
669a5db4 JG |
61 | |
62 | #define NR_HOST 6 | |
63 | ||
defc9cd8 AC |
64 | static int all; |
65 | module_param(all, int, 0444); | |
426e2c6a MR |
66 | MODULE_PARM_DESC(all, |
67 | "Set to probe unclaimed pri/sec ISA port ranges even if PCI"); | |
68 | ||
69 | static int probe_all; | |
70 | module_param(probe_all, int, 0); | |
71 | MODULE_PARM_DESC(probe_all, | |
72 | "Set to probe tertiary+ ISA port ranges even if PCI"); | |
73 | ||
7d33004d MR |
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"); | |
77 | ||
426e2c6a MR |
78 | static int autospeed; |
79 | module_param(autospeed, int, 0); | |
80 | MODULE_PARM_DESC(autospeed, "Chip present that snoops speed changes"); | |
81 | ||
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"); | |
85 | ||
86 | static int iordy_mask = 0xFFFFFFFF; | |
87 | module_param(iordy_mask, int, 0); | |
88 | MODULE_PARM_DESC(iordy_mask, "Use IORDY if available"); | |
89 | ||
90 | static int ht6560a; | |
91 | module_param(ht6560a, int, 0); | |
92 | MODULE_PARM_DESC(ht6560a, "HT 6560A on primary 1, second 2, both 3"); | |
93 | ||
94 | static int ht6560b; | |
95 | module_param(ht6560b, int, 0); | |
96 | MODULE_PARM_DESC(ht6560b, "HT 6560B on primary 1, secondary 2, both 3"); | |
97 | ||
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"); | |
102 | ||
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"); | |
107 | ||
108 | #ifdef CONFIG_PATA_QDI_MODULE | |
109 | static int qdi = 1; | |
110 | #else | |
111 | static int qdi; | |
112 | #endif | |
113 | module_param(qdi, int, 0); | |
114 | MODULE_PARM_DESC(qdi, "Set to probe QDI controllers"); | |
115 | ||
116 | #ifdef CONFIG_PATA_WINBOND_VLB_MODULE | |
117 | static int winbond = 1; | |
118 | #else | |
119 | static int winbond; | |
120 | #endif | |
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"); | |
125 | ||
669a5db4 | 126 | |
defc9cd8 AC |
127 | enum controller { |
128 | BIOS = 0, | |
129 | SNOOP = 1, | |
130 | PDC20230 = 2, | |
131 | HT6560A = 3, | |
132 | HT6560B = 4, | |
133 | OPTI611A = 5, | |
134 | OPTI46X = 6, | |
135 | QDI6500 = 7, | |
136 | QDI6580 = 8, | |
137 | QDI6580DP = 9, /* Dual channel mode is different */ | |
b8325487 | 138 | W83759A = 10, |
defc9cd8 AC |
139 | |
140 | UNKNOWN = -1 | |
141 | }; | |
142 | ||
8c7e8f94 BZ |
143 | struct legacy_data { |
144 | unsigned long timing; | |
145 | u8 clock[2]; | |
146 | u8 last; | |
147 | int fast; | |
148 | enum controller type; | |
149 | struct platform_device *platform_dev; | |
150 | }; | |
defc9cd8 AC |
151 | |
152 | struct legacy_probe { | |
153 | unsigned char *name; | |
154 | unsigned long port; | |
155 | unsigned int irq; | |
156 | unsigned int slot; | |
157 | enum controller type; | |
158 | unsigned long private; | |
159 | }; | |
160 | ||
161 | struct legacy_controller { | |
162 | const char *name; | |
163 | struct ata_port_operations *ops; | |
164 | unsigned int pio_mask; | |
165 | unsigned int flags; | |
e3cf95dd | 166 | unsigned int pflags; |
b8325487 AC |
167 | int (*setup)(struct platform_device *, struct legacy_probe *probe, |
168 | struct legacy_data *data); | |
defc9cd8 AC |
169 | }; |
170 | ||
171 | static int legacy_port[NR_HOST] = { 0x1f0, 0x170, 0x1e8, 0x168, 0x1e0, 0x160 }; | |
172 | ||
173 | static struct legacy_probe probe_list[NR_HOST]; | |
669a5db4 JG |
174 | static struct legacy_data legacy_data[NR_HOST]; |
175 | static struct ata_host *legacy_host[NR_HOST]; | |
176 | static int nr_legacy_host; | |
177 | ||
178 | ||
defc9cd8 AC |
179 | /** |
180 | * legacy_probe_add - Add interface to probe list | |
181 | * @port: Controller port | |
182 | * @irq: IRQ number | |
183 | * @type: Controller type | |
184 | * @private: Controller specific info | |
185 | * | |
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 | |
189 | * | |
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 | |
192 | */ | |
193 | ||
194 | static int legacy_probe_add(unsigned long port, unsigned int irq, | |
195 | enum controller type, unsigned long private) | |
196 | { | |
197 | struct legacy_probe *lp = &probe_list[0]; | |
198 | int i; | |
199 | struct legacy_probe *free = NULL; | |
200 | ||
201 | for (i = 0; i < NR_HOST; i++) { | |
202 | if (lp->port == 0 && free == NULL) | |
203 | free = lp; | |
204 | /* Matching port, or the correct slot for ordering */ | |
205 | if (lp->port == port || legacy_port[i] == port) { | |
7d33004d MR |
206 | if (!(probe_mask & 1 << i)) |
207 | return -1; | |
defc9cd8 AC |
208 | free = lp; |
209 | break; | |
210 | } | |
211 | lp++; | |
212 | } | |
213 | if (free == NULL) { | |
214 | printk(KERN_ERR "pata_legacy: Too many interfaces.\n"); | |
215 | return -1; | |
216 | } | |
217 | /* Fill in the entry for later probing */ | |
218 | free->port = port; | |
219 | free->irq = irq; | |
220 | free->type = type; | |
221 | free->private = private; | |
222 | return 0; | |
223 | } | |
224 | ||
225 | ||
669a5db4 JG |
226 | /** |
227 | * legacy_set_mode - mode setting | |
0260731f | 228 | * @link: IDE link |
b229a7b0 | 229 | * @unused: Device that failed when error is returned |
669a5db4 JG |
230 | * |
231 | * Use a non standard set_mode function. We don't want to be tuned. | |
232 | * | |
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. | |
237 | */ | |
238 | ||
0260731f | 239 | static int legacy_set_mode(struct ata_link *link, struct ata_device **unused) |
669a5db4 | 240 | { |
f58229f8 | 241 | struct ata_device *dev; |
669a5db4 | 242 | |
1eca4365 | 243 | ata_for_each_dev(dev, link, ENABLED) { |
a9a79dfe | 244 | ata_dev_info(dev, "configured for PIO\n"); |
1eca4365 TH |
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; | |
669a5db4 | 249 | } |
b229a7b0 | 250 | return 0; |
669a5db4 JG |
251 | } |
252 | ||
253 | static struct scsi_host_template legacy_sht = { | |
68d1d07b | 254 | ATA_PIO_SHT(DRV_NAME), |
669a5db4 JG |
255 | }; |
256 | ||
029cfd6b TH |
257 | static const struct ata_port_operations legacy_base_port_ops = { |
258 | .inherits = &ata_sff_port_ops, | |
259 | .cable_detect = ata_cable_40wire, | |
260 | }; | |
261 | ||
669a5db4 JG |
262 | /* |
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 | |
267 | * pio_mask as well. | |
268 | */ | |
269 | ||
270 | static struct ata_port_operations simple_port_ops = { | |
029cfd6b | 271 | .inherits = &legacy_base_port_ops, |
23ebda2f | 272 | .sff_data_xfer = ata_sff_data_xfer32, |
669a5db4 JG |
273 | }; |
274 | ||
275 | static struct ata_port_operations legacy_port_ops = { | |
029cfd6b | 276 | .inherits = &legacy_base_port_ops, |
23ebda2f | 277 | .sff_data_xfer = ata_sff_data_xfer32, |
029cfd6b | 278 | .set_mode = legacy_set_mode, |
669a5db4 JG |
279 | }; |
280 | ||
281 | /* | |
282 | * Promise 20230C and 20620 support | |
283 | * | |
defc9cd8 AC |
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 | |
287 | * and not supported. | |
669a5db4 JG |
288 | */ |
289 | ||
290 | static void pdc20230_set_piomode(struct ata_port *ap, struct ata_device *adev) | |
291 | { | |
292 | int tries = 5; | |
293 | int pio = adev->pio_mode - XFER_PIO_0; | |
294 | u8 rt; | |
295 | unsigned long flags; | |
85cd7251 | 296 | |
669a5db4 | 297 | /* Safe as UP only. Force I/Os to occur together */ |
85cd7251 | 298 | |
669a5db4 | 299 | local_irq_save(flags); |
85cd7251 | 300 | |
669a5db4 | 301 | /* Unlock the control interface */ |
defc9cd8 | 302 | do { |
669a5db4 JG |
303 | inb(0x1F5); |
304 | outb(inb(0x1F2) | 0x80, 0x1F2); | |
305 | inb(0x1F2); | |
306 | inb(0x3F6); | |
307 | inb(0x3F6); | |
308 | inb(0x1F2); | |
309 | inb(0x1F2); | |
310 | } | |
defc9cd8 | 311 | while ((inb(0x1F2) & 0x80) && --tries); |
669a5db4 JG |
312 | |
313 | local_irq_restore(flags); | |
85cd7251 | 314 | |
669a5db4 JG |
315 | outb(inb(0x1F4) & 0x07, 0x1F4); |
316 | ||
317 | rt = inb(0x1F3); | |
318 | rt &= 0x07 << (3 * adev->devno); | |
319 | if (pio) | |
320 | rt |= (1 + 3 * pio) << (3 * adev->devno); | |
321 | ||
322 | udelay(100); | |
323 | outb(inb(0x1F2) | 0x01, 0x1F2); | |
324 | udelay(100); | |
325 | inb(0x1F5); | |
326 | ||
327 | } | |
328 | ||
989e0aac | 329 | static unsigned int pdc_data_xfer_vlb(struct ata_queued_cmd *qc, |
defc9cd8 | 330 | unsigned char *buf, unsigned int buflen, int rw) |
669a5db4 | 331 | { |
989e0aac | 332 | struct ata_device *dev = qc->dev; |
16e6aeca | 333 | struct ata_port *ap = dev->link->ap; |
989e0aac | 334 | int slop = buflen & 3; |
16e6aeca | 335 | |
c55af1f5 | 336 | /* 32bit I/O capable *and* we need to write a whole number of dwords */ |
e3cf95dd AC |
337 | if (ata_id_has_dword_io(dev->id) && (slop == 0 || slop == 3) |
338 | && (ap->pflags & ATA_PFLAG_PIO32)) { | |
55dba312 TH |
339 | unsigned long flags; |
340 | ||
669a5db4 JG |
341 | local_irq_save(flags); |
342 | ||
343 | /* Perform the 32bit I/O synchronization sequence */ | |
0d5ff566 TH |
344 | ioread8(ap->ioaddr.nsect_addr); |
345 | ioread8(ap->ioaddr.nsect_addr); | |
346 | ioread8(ap->ioaddr.nsect_addr); | |
669a5db4 JG |
347 | |
348 | /* Now the data */ | |
55dba312 | 349 | if (rw == READ) |
0d5ff566 | 350 | ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); |
55dba312 TH |
351 | else |
352 | iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); | |
669a5db4 JG |
353 | |
354 | if (unlikely(slop)) { | |
01392347 DC |
355 | __le32 pad = 0; |
356 | ||
55dba312 | 357 | if (rw == READ) { |
b50e56d8 | 358 | pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr)); |
669a5db4 | 359 | memcpy(buf + buflen - slop, &pad, slop); |
55dba312 TH |
360 | } else { |
361 | memcpy(&pad, buf + buflen - slop, slop); | |
362 | iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr); | |
669a5db4 | 363 | } |
55dba312 | 364 | buflen += 4 - slop; |
669a5db4 JG |
365 | } |
366 | local_irq_restore(flags); | |
55dba312 | 367 | } else |
23ebda2f | 368 | buflen = ata_sff_data_xfer32(qc, buf, buflen, rw); |
55dba312 TH |
369 | |
370 | return buflen; | |
669a5db4 JG |
371 | } |
372 | ||
373 | static struct ata_port_operations pdc20230_port_ops = { | |
029cfd6b | 374 | .inherits = &legacy_base_port_ops, |
669a5db4 | 375 | .set_piomode = pdc20230_set_piomode, |
5682ed33 | 376 | .sff_data_xfer = pdc_data_xfer_vlb, |
669a5db4 JG |
377 | }; |
378 | ||
379 | /* | |
380 | * Holtek 6560A support | |
381 | * | |
defc9cd8 AC |
382 | * This controller supports PIO0 to PIO2 (no IORDY even though higher |
383 | * timings can be loaded). | |
669a5db4 JG |
384 | */ |
385 | ||
386 | static void ht6560a_set_piomode(struct ata_port *ap, struct ata_device *adev) | |
387 | { | |
388 | u8 active, recover; | |
389 | struct ata_timing t; | |
390 | ||
391 | /* Get the timing data in cycles. For now play safe at 50Mhz */ | |
392 | ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000); | |
393 | ||
07633b5d HH |
394 | active = clamp_val(t.active, 2, 15); |
395 | recover = clamp_val(t.recover, 4, 15); | |
669a5db4 JG |
396 | |
397 | inb(0x3E6); | |
398 | inb(0x3E6); | |
399 | inb(0x3E6); | |
400 | inb(0x3E6); | |
401 | ||
0d5ff566 TH |
402 | iowrite8(recover << 4 | active, ap->ioaddr.device_addr); |
403 | ioread8(ap->ioaddr.status_addr); | |
669a5db4 JG |
404 | } |
405 | ||
406 | static struct ata_port_operations ht6560a_port_ops = { | |
029cfd6b | 407 | .inherits = &legacy_base_port_ops, |
669a5db4 | 408 | .set_piomode = ht6560a_set_piomode, |
669a5db4 JG |
409 | }; |
410 | ||
411 | /* | |
412 | * Holtek 6560B support | |
413 | * | |
defc9cd8 AC |
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. | |
669a5db4 JG |
416 | * |
417 | * FIXME: need to implement 2nd channel support. | |
418 | */ | |
419 | ||
420 | static void ht6560b_set_piomode(struct ata_port *ap, struct ata_device *adev) | |
421 | { | |
422 | u8 active, recover; | |
423 | struct ata_timing t; | |
424 | ||
425 | /* Get the timing data in cycles. For now play safe at 50Mhz */ | |
426 | ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000); | |
427 | ||
07633b5d | 428 | active = clamp_val(t.active, 2, 15); |
97163873 | 429 | recover = clamp_val(t.recover, 2, 16) & 0x0F; |
669a5db4 JG |
430 | |
431 | inb(0x3E6); | |
432 | inb(0x3E6); | |
433 | inb(0x3E6); | |
434 | inb(0x3E6); | |
435 | ||
0d5ff566 | 436 | iowrite8(recover << 4 | active, ap->ioaddr.device_addr); |
669a5db4 JG |
437 | |
438 | if (adev->class != ATA_DEV_ATA) { | |
439 | u8 rconf = inb(0x3E6); | |
440 | if (rconf & 0x24) { | |
defc9cd8 | 441 | rconf &= ~0x24; |
669a5db4 JG |
442 | outb(rconf, 0x3E6); |
443 | } | |
444 | } | |
0d5ff566 | 445 | ioread8(ap->ioaddr.status_addr); |
669a5db4 JG |
446 | } |
447 | ||
448 | static struct ata_port_operations ht6560b_port_ops = { | |
029cfd6b | 449 | .inherits = &legacy_base_port_ops, |
669a5db4 | 450 | .set_piomode = ht6560b_set_piomode, |
669a5db4 JG |
451 | }; |
452 | ||
453 | /* | |
454 | * Opti core chipset helpers | |
455 | */ | |
85cd7251 | 456 | |
669a5db4 JG |
457 | /** |
458 | * opti_syscfg - read OPTI chipset configuration | |
459 | * @reg: Configuration register to read | |
460 | * | |
461 | * Returns the value of an OPTI system board configuration register. | |
462 | */ | |
463 | ||
464 | static u8 opti_syscfg(u8 reg) | |
465 | { | |
466 | unsigned long flags; | |
467 | u8 r; | |
85cd7251 | 468 | |
669a5db4 JG |
469 | /* Uniprocessor chipset and must force cycles adjancent */ |
470 | local_irq_save(flags); | |
471 | outb(reg, 0x22); | |
472 | r = inb(0x24); | |
473 | local_irq_restore(flags); | |
474 | return r; | |
475 | } | |
476 | ||
477 | /* | |
478 | * Opti 82C611A | |
479 | * | |
480 | * This controller supports PIO0 to PIO3. | |
481 | */ | |
482 | ||
defc9cd8 AC |
483 | static void opti82c611a_set_piomode(struct ata_port *ap, |
484 | struct ata_device *adev) | |
669a5db4 JG |
485 | { |
486 | u8 active, recover, setup; | |
487 | struct ata_timing t; | |
488 | struct ata_device *pair = ata_dev_pair(adev); | |
489 | int clock; | |
490 | int khz[4] = { 50000, 40000, 33000, 25000 }; | |
491 | u8 rc; | |
492 | ||
493 | /* Enter configuration mode */ | |
0d5ff566 TH |
494 | ioread16(ap->ioaddr.error_addr); |
495 | ioread16(ap->ioaddr.error_addr); | |
496 | iowrite8(3, ap->ioaddr.nsect_addr); | |
669a5db4 JG |
497 | |
498 | /* Read VLB clock strapping */ | |
0d5ff566 | 499 | clock = 1000000000 / khz[ioread8(ap->ioaddr.lbah_addr) & 0x03]; |
669a5db4 JG |
500 | |
501 | /* Get the timing data in cycles */ | |
502 | ata_timing_compute(adev, adev->pio_mode, &t, clock, 1000); | |
503 | ||
504 | /* Setup timing is shared */ | |
505 | if (pair) { | |
506 | struct ata_timing tp; | |
507 | ata_timing_compute(pair, pair->pio_mode, &tp, clock, 1000); | |
508 | ||
509 | ata_timing_merge(&t, &tp, &t, ATA_TIMING_SETUP); | |
510 | } | |
511 | ||
07633b5d HH |
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; | |
669a5db4 JG |
515 | |
516 | /* Select the right timing bank for write timing */ | |
0d5ff566 | 517 | rc = ioread8(ap->ioaddr.lbal_addr); |
669a5db4 JG |
518 | rc &= 0x7F; |
519 | rc |= (adev->devno << 7); | |
0d5ff566 | 520 | iowrite8(rc, ap->ioaddr.lbal_addr); |
669a5db4 JG |
521 | |
522 | /* Write the timings */ | |
0d5ff566 | 523 | iowrite8(active << 4 | recover, ap->ioaddr.error_addr); |
669a5db4 JG |
524 | |
525 | /* Select the right bank for read timings, also | |
526 | load the shared timings for address */ | |
0d5ff566 | 527 | rc = ioread8(ap->ioaddr.device_addr); |
669a5db4 JG |
528 | rc &= 0xC0; |
529 | rc |= adev->devno; /* Index select */ | |
530 | rc |= (setup << 4) | 0x04; | |
0d5ff566 | 531 | iowrite8(rc, ap->ioaddr.device_addr); |
669a5db4 JG |
532 | |
533 | /* Load the read timings */ | |
0d5ff566 | 534 | iowrite8(active << 4 | recover, ap->ioaddr.data_addr); |
669a5db4 JG |
535 | |
536 | /* Ensure the timing register mode is right */ | |
0d5ff566 | 537 | rc = ioread8(ap->ioaddr.lbal_addr); |
669a5db4 JG |
538 | rc &= 0x73; |
539 | rc |= 0x84; | |
0d5ff566 | 540 | iowrite8(rc, ap->ioaddr.lbal_addr); |
669a5db4 JG |
541 | |
542 | /* Exit command mode */ | |
0d5ff566 | 543 | iowrite8(0x83, ap->ioaddr.nsect_addr); |
669a5db4 JG |
544 | } |
545 | ||
546 | ||
547 | static struct ata_port_operations opti82c611a_port_ops = { | |
029cfd6b | 548 | .inherits = &legacy_base_port_ops, |
669a5db4 | 549 | .set_piomode = opti82c611a_set_piomode, |
669a5db4 JG |
550 | }; |
551 | ||
552 | /* | |
553 | * Opti 82C465MV | |
554 | * | |
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. | |
557 | */ | |
558 | ||
559 | static void opti82c46x_set_piomode(struct ata_port *ap, struct ata_device *adev) | |
560 | { | |
561 | u8 active, recover, setup; | |
562 | struct ata_timing t; | |
563 | struct ata_device *pair = ata_dev_pair(adev); | |
564 | int clock; | |
565 | int khz[4] = { 50000, 40000, 33000, 25000 }; | |
566 | u8 rc; | |
567 | u8 sysclk; | |
568 | ||
569 | /* Get the clock */ | |
e0044c98 | 570 | sysclk = (opti_syscfg(0xAC) & 0xC0) >> 6; /* BIOS set */ |
669a5db4 JG |
571 | |
572 | /* Enter configuration mode */ | |
0d5ff566 TH |
573 | ioread16(ap->ioaddr.error_addr); |
574 | ioread16(ap->ioaddr.error_addr); | |
575 | iowrite8(3, ap->ioaddr.nsect_addr); | |
669a5db4 JG |
576 | |
577 | /* Read VLB clock strapping */ | |
578 | clock = 1000000000 / khz[sysclk]; | |
579 | ||
580 | /* Get the timing data in cycles */ | |
581 | ata_timing_compute(adev, adev->pio_mode, &t, clock, 1000); | |
582 | ||
583 | /* Setup timing is shared */ | |
584 | if (pair) { | |
585 | struct ata_timing tp; | |
586 | ata_timing_compute(pair, pair->pio_mode, &tp, clock, 1000); | |
587 | ||
588 | ata_timing_merge(&t, &tp, &t, ATA_TIMING_SETUP); | |
589 | } | |
590 | ||
07633b5d HH |
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; | |
669a5db4 JG |
594 | |
595 | /* Select the right timing bank for write timing */ | |
0d5ff566 | 596 | rc = ioread8(ap->ioaddr.lbal_addr); |
669a5db4 JG |
597 | rc &= 0x7F; |
598 | rc |= (adev->devno << 7); | |
0d5ff566 | 599 | iowrite8(rc, ap->ioaddr.lbal_addr); |
669a5db4 JG |
600 | |
601 | /* Write the timings */ | |
0d5ff566 | 602 | iowrite8(active << 4 | recover, ap->ioaddr.error_addr); |
669a5db4 JG |
603 | |
604 | /* Select the right bank for read timings, also | |
605 | load the shared timings for address */ | |
0d5ff566 | 606 | rc = ioread8(ap->ioaddr.device_addr); |
669a5db4 JG |
607 | rc &= 0xC0; |
608 | rc |= adev->devno; /* Index select */ | |
609 | rc |= (setup << 4) | 0x04; | |
0d5ff566 | 610 | iowrite8(rc, ap->ioaddr.device_addr); |
669a5db4 JG |
611 | |
612 | /* Load the read timings */ | |
0d5ff566 | 613 | iowrite8(active << 4 | recover, ap->ioaddr.data_addr); |
669a5db4 JG |
614 | |
615 | /* Ensure the timing register mode is right */ | |
0d5ff566 | 616 | rc = ioread8(ap->ioaddr.lbal_addr); |
669a5db4 JG |
617 | rc &= 0x73; |
618 | rc |= 0x84; | |
0d5ff566 | 619 | iowrite8(rc, ap->ioaddr.lbal_addr); |
669a5db4 JG |
620 | |
621 | /* Exit command mode */ | |
0d5ff566 | 622 | iowrite8(0x83, ap->ioaddr.nsect_addr); |
669a5db4 JG |
623 | |
624 | /* We need to know this for quad device on the MVB */ | |
625 | ap->host->private_data = ap; | |
626 | } | |
627 | ||
628 | /** | |
145f74fa | 629 | * opti82c46x_qc_issue - command issue |
669a5db4 JG |
630 | * @qc: command pending |
631 | * | |
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. | |
639 | * | |
640 | * FIXME: dual channel needs ->serialize support | |
641 | */ | |
642 | ||
9363c382 | 643 | static unsigned int opti82c46x_qc_issue(struct ata_queued_cmd *qc) |
669a5db4 JG |
644 | { |
645 | struct ata_port *ap = qc->ap; | |
646 | struct ata_device *adev = qc->dev; | |
647 | ||
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); | |
653 | ||
9363c382 | 654 | return ata_sff_qc_issue(qc); |
669a5db4 JG |
655 | } |
656 | ||
657 | static struct ata_port_operations opti82c46x_port_ops = { | |
029cfd6b | 658 | .inherits = &legacy_base_port_ops, |
669a5db4 | 659 | .set_piomode = opti82c46x_set_piomode, |
9363c382 | 660 | .qc_issue = opti82c46x_qc_issue, |
669a5db4 JG |
661 | }; |
662 | ||
669a5db4 | 663 | /** |
8c7e8f94 | 664 | * qdi65x0_set_piomode - PIO setup for QDI65x0 |
defc9cd8 AC |
665 | * @ap: Port |
666 | * @adev: Device | |
669a5db4 | 667 | * |
8c7e8f94 BZ |
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. | |
671 | * | |
defc9cd8 | 672 | * In dual channel mode the 6580 has one clock per channel and we have |
9363c382 | 673 | * to software clockswitch in qc_issue. |
669a5db4 JG |
674 | */ |
675 | ||
8c7e8f94 | 676 | static void qdi65x0_set_piomode(struct ata_port *ap, struct ata_device *adev) |
669a5db4 | 677 | { |
defc9cd8 | 678 | struct ata_timing t; |
cb616dd5 | 679 | struct legacy_data *ld_qdi = ap->host->private_data; |
defc9cd8 AC |
680 | int active, recovery; |
681 | u8 timing; | |
669a5db4 | 682 | |
defc9cd8 AC |
683 | /* Get the timing data in cycles */ |
684 | ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000); | |
685 | ||
cb616dd5 | 686 | if (ld_qdi->fast) { |
07633b5d HH |
687 | active = 8 - clamp_val(t.active, 1, 8); |
688 | recovery = 18 - clamp_val(t.recover, 3, 18); | |
defc9cd8 | 689 | } else { |
07633b5d HH |
690 | active = 9 - clamp_val(t.active, 2, 9); |
691 | recovery = 15 - clamp_val(t.recover, 0, 15); | |
defc9cd8 AC |
692 | } |
693 | timing = (recovery << 4) | active | 0x08; | |
cb616dd5 | 694 | ld_qdi->clock[adev->devno] = timing; |
669a5db4 | 695 | |
8c7e8f94 BZ |
696 | if (ld_qdi->type == QDI6580) |
697 | outb(timing, ld_qdi->timing + 2 * adev->devno); | |
698 | else | |
699 | outb(timing, ld_qdi->timing + 2 * ap->port_no); | |
defc9cd8 | 700 | |
defc9cd8 | 701 | /* Clear the FIFO */ |
8c7e8f94 | 702 | if (ld_qdi->type != QDI6500 && adev->class != ATA_DEV_ATA) |
6809e730 | 703 | outb(0x5F, (ld_qdi->timing & 0xFFF0) + 3); |
defc9cd8 AC |
704 | } |
705 | ||
706 | /** | |
9363c382 | 707 | * qdi_qc_issue - command issue |
defc9cd8 AC |
708 | * @qc: command pending |
709 | * | |
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. | |
712 | */ | |
713 | ||
9363c382 | 714 | static unsigned int qdi_qc_issue(struct ata_queued_cmd *qc) |
defc9cd8 AC |
715 | { |
716 | struct ata_port *ap = qc->ap; | |
717 | struct ata_device *adev = qc->dev; | |
cb616dd5 | 718 | struct legacy_data *ld_qdi = ap->host->private_data; |
defc9cd8 | 719 | |
cb616dd5 | 720 | if (ld_qdi->clock[adev->devno] != ld_qdi->last) { |
defc9cd8 | 721 | if (adev->pio_mode) { |
cb616dd5 HH |
722 | ld_qdi->last = ld_qdi->clock[adev->devno]; |
723 | outb(ld_qdi->clock[adev->devno], ld_qdi->timing + | |
defc9cd8 AC |
724 | 2 * ap->port_no); |
725 | } | |
669a5db4 | 726 | } |
9363c382 | 727 | return ata_sff_qc_issue(qc); |
defc9cd8 | 728 | } |
669a5db4 | 729 | |
989e0aac BZ |
730 | static unsigned int vlb32_data_xfer(struct ata_queued_cmd *qc, |
731 | unsigned char *buf, | |
732 | unsigned int buflen, int rw) | |
defc9cd8 | 733 | { |
989e0aac | 734 | struct ata_device *adev = qc->dev; |
defc9cd8 AC |
735 | struct ata_port *ap = adev->link->ap; |
736 | int slop = buflen & 3; | |
669a5db4 | 737 | |
e3cf95dd AC |
738 | if (ata_id_has_dword_io(adev->id) && (slop == 0 || slop == 3) |
739 | && (ap->pflags & ATA_PFLAG_PIO32)) { | |
defc9cd8 AC |
740 | if (rw == WRITE) |
741 | iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); | |
742 | else | |
743 | ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); | |
669a5db4 | 744 | |
defc9cd8 | 745 | if (unlikely(slop)) { |
01392347 DC |
746 | __le32 pad = 0; |
747 | ||
defc9cd8 AC |
748 | if (rw == WRITE) { |
749 | memcpy(&pad, buf + buflen - slop, slop); | |
6ad67403 | 750 | iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr); |
defc9cd8 | 751 | } else { |
6ad67403 | 752 | pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr)); |
defc9cd8 AC |
753 | memcpy(buf + buflen - slop, &pad, slop); |
754 | } | |
755 | } | |
756 | return (buflen + 3) & ~3; | |
757 | } else | |
989e0aac | 758 | return ata_sff_data_xfer(qc, buf, buflen, rw); |
defc9cd8 AC |
759 | } |
760 | ||
b8325487 AC |
761 | static int qdi_port(struct platform_device *dev, |
762 | struct legacy_probe *lp, struct legacy_data *ld) | |
763 | { | |
764 | if (devm_request_region(&dev->dev, lp->private, 4, "qdi") == NULL) | |
765 | return -EBUSY; | |
766 | ld->timing = lp->private; | |
767 | return 0; | |
768 | } | |
769 | ||
defc9cd8 | 770 | static struct ata_port_operations qdi6500_port_ops = { |
029cfd6b | 771 | .inherits = &legacy_base_port_ops, |
8c7e8f94 | 772 | .set_piomode = qdi65x0_set_piomode, |
9363c382 | 773 | .qc_issue = qdi_qc_issue, |
5682ed33 | 774 | .sff_data_xfer = vlb32_data_xfer, |
defc9cd8 AC |
775 | }; |
776 | ||
777 | static struct ata_port_operations qdi6580_port_ops = { | |
029cfd6b | 778 | .inherits = &legacy_base_port_ops, |
8c7e8f94 | 779 | .set_piomode = qdi65x0_set_piomode, |
5682ed33 | 780 | .sff_data_xfer = vlb32_data_xfer, |
defc9cd8 AC |
781 | }; |
782 | ||
783 | static struct ata_port_operations qdi6580dp_port_ops = { | |
029cfd6b | 784 | .inherits = &legacy_base_port_ops, |
8c7e8f94 | 785 | .set_piomode = qdi65x0_set_piomode, |
43c7d17e | 786 | .qc_issue = qdi_qc_issue, |
5682ed33 | 787 | .sff_data_xfer = vlb32_data_xfer, |
defc9cd8 AC |
788 | }; |
789 | ||
b8325487 AC |
790 | static DEFINE_SPINLOCK(winbond_lock); |
791 | ||
792 | static void winbond_writecfg(unsigned long port, u8 reg, u8 val) | |
793 | { | |
794 | unsigned long flags; | |
795 | spin_lock_irqsave(&winbond_lock, flags); | |
796 | outb(reg, port + 0x01); | |
797 | outb(val, port + 0x02); | |
798 | spin_unlock_irqrestore(&winbond_lock, flags); | |
799 | } | |
800 | ||
801 | static u8 winbond_readcfg(unsigned long port, u8 reg) | |
802 | { | |
803 | u8 val; | |
804 | ||
805 | unsigned long flags; | |
806 | spin_lock_irqsave(&winbond_lock, flags); | |
807 | outb(reg, port + 0x01); | |
808 | val = inb(port + 0x02); | |
809 | spin_unlock_irqrestore(&winbond_lock, flags); | |
810 | ||
811 | return val; | |
812 | } | |
813 | ||
814 | static void winbond_set_piomode(struct ata_port *ap, struct ata_device *adev) | |
815 | { | |
816 | struct ata_timing t; | |
cb616dd5 | 817 | struct legacy_data *ld_winbond = ap->host->private_data; |
b8325487 AC |
818 | int active, recovery; |
819 | u8 reg; | |
820 | int timing = 0x88 + (ap->port_no * 4) + (adev->devno * 2); | |
821 | ||
cb616dd5 | 822 | reg = winbond_readcfg(ld_winbond->timing, 0x81); |
b8325487 AC |
823 | |
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); | |
827 | else | |
828 | ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000); | |
829 | ||
07633b5d HH |
830 | active = (clamp_val(t.active, 3, 17) - 1) & 0x0F; |
831 | recovery = (clamp_val(t.recover, 1, 15) + 1) & 0x0F; | |
b8325487 | 832 | timing = (active << 4) | recovery; |
cb616dd5 | 833 | winbond_writecfg(ld_winbond->timing, timing, reg); |
b8325487 AC |
834 | |
835 | /* Load the setup timing */ | |
836 | ||
837 | reg = 0x35; | |
838 | if (adev->class != ATA_DEV_ATA) | |
839 | reg |= 0x08; /* FIFO off */ | |
840 | if (!ata_pio_need_iordy(adev)) | |
841 | reg |= 0x02; /* IORDY off */ | |
07633b5d | 842 | reg |= (clamp_val(t.setup, 0, 3) << 6); |
cb616dd5 | 843 | winbond_writecfg(ld_winbond->timing, timing + 1, reg); |
b8325487 AC |
844 | } |
845 | ||
846 | static int winbond_port(struct platform_device *dev, | |
847 | struct legacy_probe *lp, struct legacy_data *ld) | |
848 | { | |
849 | if (devm_request_region(&dev->dev, lp->private, 4, "winbond") == NULL) | |
850 | return -EBUSY; | |
851 | ld->timing = lp->private; | |
852 | return 0; | |
853 | } | |
854 | ||
855 | static struct ata_port_operations winbond_port_ops = { | |
029cfd6b | 856 | .inherits = &legacy_base_port_ops, |
b8325487 | 857 | .set_piomode = winbond_set_piomode, |
5682ed33 | 858 | .sff_data_xfer = vlb32_data_xfer, |
b8325487 AC |
859 | }; |
860 | ||
defc9cd8 | 861 | static struct legacy_controller controllers[] = { |
b2f104bb | 862 | {"BIOS", &legacy_port_ops, ATA_PIO4, |
e3cf95dd | 863 | ATA_FLAG_NO_IORDY, 0, NULL }, |
b2f104bb | 864 | {"Snooping", &simple_port_ops, ATA_PIO4, |
e3cf95dd | 865 | 0, 0, NULL }, |
b2f104bb | 866 | {"PDC20230", &pdc20230_port_ops, ATA_PIO2, |
e3cf95dd | 867 | ATA_FLAG_NO_IORDY, |
16e6aeca | 868 | ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, NULL }, |
b2f104bb | 869 | {"HT6560A", &ht6560a_port_ops, ATA_PIO2, |
e3cf95dd | 870 | ATA_FLAG_NO_IORDY, 0, NULL }, |
b2f104bb | 871 | {"HT6560B", &ht6560b_port_ops, ATA_PIO4, |
e3cf95dd | 872 | ATA_FLAG_NO_IORDY, 0, NULL }, |
b2f104bb | 873 | {"OPTI82C611A", &opti82c611a_port_ops, ATA_PIO3, |
e3cf95dd | 874 | 0, 0, NULL }, |
b2f104bb | 875 | {"OPTI82C46X", &opti82c46x_port_ops, ATA_PIO3, |
e3cf95dd | 876 | 0, 0, NULL }, |
b2f104bb | 877 | {"QDI6500", &qdi6500_port_ops, ATA_PIO2, |
e3cf95dd | 878 | ATA_FLAG_NO_IORDY, |
16e6aeca | 879 | ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, qdi_port }, |
b2f104bb | 880 | {"QDI6580", &qdi6580_port_ops, ATA_PIO4, |
16e6aeca | 881 | 0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, qdi_port }, |
b2f104bb | 882 | {"QDI6580DP", &qdi6580dp_port_ops, ATA_PIO4, |
16e6aeca | 883 | 0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, qdi_port }, |
b2f104bb | 884 | {"W83759A", &winbond_port_ops, ATA_PIO4, |
16e6aeca | 885 | 0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE, |
e3cf95dd | 886 | winbond_port } |
defc9cd8 AC |
887 | }; |
888 | ||
889 | /** | |
890 | * probe_chip_type - Discover controller | |
891 | * @probe: Probe entry to check | |
892 | * | |
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. | |
895 | */ | |
896 | ||
b8325487 | 897 | static __init int probe_chip_type(struct legacy_probe *probe) |
defc9cd8 AC |
898 | { |
899 | int mask = 1 << probe->slot; | |
900 | ||
b8325487 AC |
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); | |
911 | ||
912 | reg = winbond_readcfg(winbond, 0x81); | |
913 | ||
914 | if (reg & mask) | |
915 | return W83759A; | |
916 | } | |
defc9cd8 AC |
917 | if (probe->port == 0x1F0) { |
918 | unsigned long flags; | |
919 | local_irq_save(flags); | |
669a5db4 | 920 | /* Probes */ |
669a5db4 | 921 | outb(inb(0x1F2) | 0x80, 0x1F2); |
defc9cd8 | 922 | inb(0x1F5); |
669a5db4 JG |
923 | inb(0x1F2); |
924 | inb(0x3F6); | |
925 | inb(0x3F6); | |
926 | inb(0x1F2); | |
927 | inb(0x1F2); | |
928 | ||
929 | if ((inb(0x1F2) & 0x80) == 0) { | |
930 | /* PDC20230c or 20630 ? */ | |
defc9cd8 AC |
931 | printk(KERN_INFO "PDC20230-C/20630 VLB ATA controller" |
932 | " detected.\n"); | |
669a5db4 JG |
933 | udelay(100); |
934 | inb(0x1F5); | |
defc9cd8 AC |
935 | local_irq_restore(flags); |
936 | return PDC20230; | |
669a5db4 JG |
937 | } else { |
938 | outb(0x55, 0x1F2); | |
939 | inb(0x1F2); | |
940 | inb(0x1F2); | |
defc9cd8 AC |
941 | if (inb(0x1F2) == 0x00) |
942 | printk(KERN_INFO "PDC20230-B VLB ATA " | |
943 | "controller detected.\n"); | |
944 | local_irq_restore(flags); | |
945 | return BIOS; | |
669a5db4 | 946 | } |
669a5db4 JG |
947 | } |
948 | ||
defc9cd8 AC |
949 | if (ht6560a & mask) |
950 | return HT6560A; | |
951 | if (ht6560b & mask) | |
952 | return HT6560B; | |
953 | if (opti82c611a & mask) | |
954 | return OPTI611A; | |
955 | if (opti82c46x & mask) | |
956 | return OPTI46X; | |
957 | if (autospeed & mask) | |
958 | return SNOOP; | |
959 | return BIOS; | |
960 | } | |
961 | ||
962 | ||
963 | /** | |
964 | * legacy_init_one - attach a legacy interface | |
145f74fa | 965 | * @probe: probe record |
defc9cd8 AC |
966 | * |
967 | * Register an ISA bus IDE interface. Such interfaces are PIO and we | |
968 | * assume do not support IRQ sharing. | |
969 | */ | |
970 | ||
971 | static __init int legacy_init_one(struct legacy_probe *probe) | |
972 | { | |
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; | |
980 | struct ata_port *ap; | |
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; | |
985 | int ret; | |
986 | ||
987 | iordy |= controller->flags; | |
988 | ||
989 | pdev = platform_device_register_simple(DRV_NAME, probe->slot, NULL, 0); | |
990 | if (IS_ERR(pdev)) | |
991 | return PTR_ERR(pdev); | |
669a5db4 | 992 | |
defc9cd8 AC |
993 | ret = -EBUSY; |
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) | |
997 | goto fail; | |
f834e49f | 998 | |
5d728824 | 999 | ret = -ENOMEM; |
defc9cd8 AC |
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) | |
1003 | goto fail; | |
8c7e8f94 | 1004 | ld->type = probe->type; |
defc9cd8 | 1005 | if (controller->setup) |
b8325487 | 1006 | if (controller->setup(pdev, probe, ld) < 0) |
defc9cd8 | 1007 | goto fail; |
5d728824 TH |
1008 | host = ata_host_alloc(&pdev->dev, 1); |
1009 | if (!host) | |
1010 | goto fail; | |
1011 | ap = host->ports[0]; | |
1012 | ||
1013 | ap->ops = ops; | |
1014 | ap->pio_mask = pio_modes; | |
1015 | ap->flags |= ATA_FLAG_SLAVE_POSS | iordy; | |
e3cf95dd | 1016 | ap->pflags |= controller->pflags; |
5d728824 TH |
1017 | ap->ioaddr.cmd_addr = io_addr; |
1018 | ap->ioaddr.altstatus_addr = ctrl_addr; | |
1019 | ap->ioaddr.ctl_addr = ctrl_addr; | |
9363c382 | 1020 | ata_sff_std_ports(&ap->ioaddr); |
b8325487 | 1021 | ap->host->private_data = ld; |
5d728824 | 1022 | |
defc9cd8 | 1023 | ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", io, io + 0x0206); |
cbcdd875 | 1024 | |
9363c382 TH |
1025 | ret = ata_host_activate(host, probe->irq, ata_sff_interrupt, 0, |
1026 | &legacy_sht); | |
5d728824 | 1027 | if (ret) |
669a5db4 | 1028 | goto fail; |
45bc955b | 1029 | async_synchronize_full(); |
669a5db4 | 1030 | ld->platform_dev = pdev; |
669a5db4 | 1031 | |
defc9cd8 AC |
1032 | /* Nothing found means we drop the port as its probably not there */ |
1033 | ||
1034 | ret = -ENODEV; | |
1eca4365 | 1035 | ata_for_each_dev(dev, &ap->link, ALL) { |
defc9cd8 AC |
1036 | if (!ata_dev_absent(dev)) { |
1037 | legacy_host[probe->slot] = host; | |
1038 | ld->platform_dev = pdev; | |
1039 | return 0; | |
1040 | } | |
1041 | } | |
20cbf5f8 | 1042 | ata_host_detach(host); |
669a5db4 JG |
1043 | fail: |
1044 | platform_device_unregister(pdev); | |
669a5db4 JG |
1045 | return ret; |
1046 | } | |
1047 | ||
1048 | /** | |
1049 | * legacy_check_special_cases - ATA special cases | |
1050 | * @p: PCI device to check | |
145f74fa LJ |
1051 | * @primary: set this if we find an ATA master |
1052 | * @secondary: set this if we find an ATA secondary | |
669a5db4 | 1053 | * |
defc9cd8 AC |
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. | |
669a5db4 JG |
1059 | */ |
1060 | ||
b8325487 | 1061 | static void __init legacy_check_special_cases(struct pci_dev *p, int *primary, |
defc9cd8 | 1062 | int *secondary) |
669a5db4 JG |
1063 | { |
1064 | /* Cyrix CS5510 pre SFF MWDMA ATA on the bridge */ | |
1065 | if (p->vendor == 0x1078 && p->device == 0x0000) { | |
1066 | *primary = *secondary = 1; | |
1067 | return; | |
1068 | } | |
1069 | /* Cyrix CS5520 pre SFF MWDMA ATA on the bridge */ | |
1070 | if (p->vendor == 0x1078 && p->device == 0x0002) { | |
1071 | *primary = *secondary = 1; | |
1072 | return; | |
1073 | } | |
1074 | /* Intel MPIIX - PIO ATA on non PCI side of bridge */ | |
1075 | if (p->vendor == 0x8086 && p->device == 0x1234) { | |
1076 | u16 r; | |
1077 | pci_read_config_word(p, 0x6C, &r); | |
defc9cd8 AC |
1078 | if (r & 0x8000) { |
1079 | /* ATA port enabled */ | |
669a5db4 JG |
1080 | if (r & 0x4000) |
1081 | *secondary = 1; | |
1082 | else | |
1083 | *primary = 1; | |
1084 | } | |
1085 | return; | |
1086 | } | |
1087 | } | |
1088 | ||
defc9cd8 AC |
1089 | static __init void probe_opti_vlb(void) |
1090 | { | |
1091 | /* If an OPTI 82C46X is present find out where the channels are */ | |
1092 | static const char *optis[4] = { | |
1093 | "3/463MV", "5MV", | |
1094 | "5MVA", "5MVB" | |
1095 | }; | |
1096 | u8 chans = 1; | |
1097 | u8 ctrl = (opti_syscfg(0x30) & 0xC0) >> 6; | |
1098 | ||
1099 | opti82c46x = 3; /* Assume master and slave first */ | |
1100 | printk(KERN_INFO DRV_NAME ": Opti 82C46%s chipset support.\n", | |
1101 | optis[ctrl]); | |
1102 | if (ctrl == 3) | |
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 */ | |
1107 | if (ctrl & 8) { | |
1108 | if (chans == 2) { | |
1109 | legacy_probe_add(0x1F0, 14, OPTI46X, 0); | |
1110 | legacy_probe_add(0x170, 15, OPTI46X, 0); | |
1111 | } | |
1112 | if (ctrl & 4) | |
1113 | legacy_probe_add(0x170, 15, OPTI46X, 0); | |
1114 | else | |
1115 | legacy_probe_add(0x1F0, 14, OPTI46X, 0); | |
1116 | } else | |
1117 | legacy_probe_add(0x1F0, 14, OPTI46X, 0); | |
1118 | } | |
1119 | ||
1120 | static __init void qdi65_identify_port(u8 r, u8 res, unsigned long port) | |
1121 | { | |
1122 | static const unsigned long ide_port[2] = { 0x170, 0x1F0 }; | |
1123 | /* Check card type */ | |
1124 | if ((r & 0xF0) == 0xC0) { | |
1125 | /* QD6500: single channel */ | |
b8325487 | 1126 | if (r & 8) |
defc9cd8 | 1127 | /* Disabled ? */ |
defc9cd8 | 1128 | return; |
defc9cd8 AC |
1129 | legacy_probe_add(ide_port[r & 0x01], 14 + (r & 0x01), |
1130 | QDI6500, port); | |
1131 | } | |
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); | |
1136 | return; | |
1137 | } | |
1138 | res = inb(port + 3); | |
1139 | /* Single channel mode ? */ | |
1140 | if (res & 1) | |
1141 | legacy_probe_add(ide_port[r & 0x01], 14 + (r & 0x01), | |
1142 | QDI6580, port); | |
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); | |
1147 | } | |
b8325487 | 1148 | release_region(port + 2, 2); |
defc9cd8 AC |
1149 | } |
1150 | } | |
1151 | ||
1152 | static __init void probe_qdi_vlb(void) | |
1153 | { | |
1154 | unsigned long flags; | |
1155 | static const unsigned long qd_port[2] = { 0x30, 0xB0 }; | |
1156 | int i; | |
1157 | ||
1158 | /* | |
1159 | * Check each possible QD65xx base address | |
1160 | */ | |
1161 | ||
1162 | for (i = 0; i < 2; i++) { | |
1163 | unsigned long port = qd_port[i]; | |
1164 | u8 r, res; | |
1165 | ||
1166 | ||
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 */ | |
1172 | r = inb(port); | |
1173 | udelay(1); | |
1174 | outb(0x19, port); | |
1175 | udelay(1); | |
1176 | res = inb(port); | |
1177 | udelay(1); | |
1178 | outb(r, port); | |
1179 | udelay(1); | |
1180 | local_irq_restore(flags); | |
1181 | ||
1182 | /* Fail */ | |
1183 | if (res == 0x19) { | |
1184 | release_region(port, 2); | |
1185 | continue; | |
1186 | } | |
1187 | /* Passes the presence test */ | |
1188 | r = inb(port + 1); | |
1189 | udelay(1); | |
1190 | /* Check port agrees with port set */ | |
b8325487 AC |
1191 | if ((r & 2) >> 1 == i) |
1192 | qdi65_identify_port(r, res, port); | |
1193 | release_region(port, 2); | |
defc9cd8 AC |
1194 | } |
1195 | } | |
1196 | } | |
669a5db4 JG |
1197 | |
1198 | /** | |
1199 | * legacy_init - attach legacy interfaces | |
1200 | * | |
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. | |
1206 | */ | |
1207 | ||
1208 | static __init int legacy_init(void) | |
1209 | { | |
1210 | int i; | |
1211 | int ct = 0; | |
1212 | int primary = 0; | |
1213 | int secondary = 0; | |
defc9cd8 AC |
1214 | int pci_present = 0; |
1215 | struct legacy_probe *pl = &probe_list[0]; | |
1216 | int slot = 0; | |
669a5db4 JG |
1217 | |
1218 | struct pci_dev *p = NULL; | |
1219 | ||
1220 | for_each_pci_dev(p) { | |
1221 | int r; | |
defc9cd8 AC |
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 */ | |
669a5db4 JG |
1225 | for (r = 0; r < 6; r++) { |
1226 | if (pci_resource_start(p, r) == 0x1f0) | |
1227 | primary = 1; | |
1228 | if (pci_resource_start(p, r) == 0x170) | |
1229 | secondary = 1; | |
1230 | } | |
1231 | /* Check for special cases */ | |
1232 | legacy_check_special_cases(p, &primary, &secondary); | |
1233 | ||
defc9cd8 AC |
1234 | /* If PCI bus is present then don't probe for tertiary |
1235 | legacy ports */ | |
1236 | pci_present = 1; | |
669a5db4 JG |
1237 | } |
1238 | ||
b8325487 AC |
1239 | if (winbond == 1) |
1240 | winbond = 0x130; /* Default port, alt is 1B0 */ | |
1241 | ||
defc9cd8 AC |
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); | |
1246 | ||
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); | |
669a5db4 JG |
1253 | } |
1254 | ||
defc9cd8 AC |
1255 | if (opti82c46x) |
1256 | probe_opti_vlb(); | |
1257 | if (qdi) | |
1258 | probe_qdi_vlb(); | |
1259 | ||
defc9cd8 AC |
1260 | for (i = 0; i < NR_HOST; i++, pl++) { |
1261 | if (pl->port == 0) | |
669a5db4 | 1262 | continue; |
defc9cd8 AC |
1263 | if (pl->type == UNKNOWN) |
1264 | pl->type = probe_chip_type(pl); | |
1265 | pl->slot = slot++; | |
1266 | if (legacy_init_one(pl) == 0) | |
669a5db4 JG |
1267 | ct++; |
1268 | } | |
1269 | if (ct != 0) | |
1270 | return 0; | |
1271 | return -ENODEV; | |
1272 | } | |
1273 | ||
1274 | static __exit void legacy_exit(void) | |
1275 | { | |
1276 | int i; | |
1277 | ||
1278 | for (i = 0; i < nr_legacy_host; i++) { | |
1279 | struct legacy_data *ld = &legacy_data[i]; | |
24dc5f33 | 1280 | ata_host_detach(legacy_host[i]); |
669a5db4 | 1281 | platform_device_unregister(ld->platform_dev); |
669a5db4 JG |
1282 | } |
1283 | } | |
1284 | ||
1285 | MODULE_AUTHOR("Alan Cox"); | |
1286 | MODULE_DESCRIPTION("low-level driver for legacy ATA"); | |
1287 | MODULE_LICENSE("GPL"); | |
1288 | MODULE_VERSION(DRV_VERSION); | |
0dcd0a76 | 1289 | MODULE_ALIAS("pata_qdi"); |
6d981b9a | 1290 | MODULE_ALIAS("pata_winbond"); |
669a5db4 | 1291 | |
669a5db4 JG |
1292 | module_init(legacy_init); |
1293 | module_exit(legacy_exit); |