Commit | Line | Data |
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669a5db4 JG |
1 | /* |
2 | * pata_artop.c - ARTOP ATA controller driver | |
3 | * | |
ab771630 | 4 | * (C) 2006 Red Hat |
be456b77 | 5 | * (C) 2007 Bartlomiej Zolnierkiewicz |
669a5db4 JG |
6 | * |
7 | * Based in part on drivers/ide/pci/aec62xx.c | |
8 | * Copyright (C) 1999-2002 Andre Hedrick <andre@linux-ide.org> | |
9 | * 865/865R fixes for Macintosh card version from a patch to the old | |
10 | * driver by Thibaut VARENE <varenet@parisc-linux.org> | |
11 | * When setting the PCI latency we must set 0x80 or higher for burst | |
12 | * performance Alessandro Zummo <alessandro.zummo@towertech.it> | |
13 | * | |
14 | * TODO | |
669a5db4 JG |
15 | * Investigate no_dsc on 850R |
16 | * Clock detect | |
17 | */ | |
18 | ||
19 | #include <linux/kernel.h> | |
20 | #include <linux/module.h> | |
21 | #include <linux/pci.h> | |
22 | #include <linux/init.h> | |
23 | #include <linux/blkdev.h> | |
24 | #include <linux/delay.h> | |
25 | #include <linux/device.h> | |
26 | #include <scsi/scsi_host.h> | |
27 | #include <linux/libata.h> | |
28 | #include <linux/ata.h> | |
29 | ||
30 | #define DRV_NAME "pata_artop" | |
140d6fed | 31 | #define DRV_VERSION "0.4.5" |
669a5db4 JG |
32 | |
33 | /* | |
34 | * The ARTOP has 33 Mhz and "over clocked" timing tables. Until we | |
35 | * get PCI bus speed functionality we leave this as 0. Its a variable | |
36 | * for when we get the functionality and also for folks wanting to | |
37 | * test stuff. | |
38 | */ | |
39 | ||
40 | static int clock = 0; | |
41 | ||
cc0680a5 | 42 | static int artop6210_pre_reset(struct ata_link *link, unsigned long deadline) |
669a5db4 | 43 | { |
cc0680a5 | 44 | struct ata_port *ap = link->ap; |
669a5db4 JG |
45 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); |
46 | const struct pci_bits artop_enable_bits[] = { | |
47 | { 0x4AU, 1U, 0x02UL, 0x02UL }, /* port 0 */ | |
48 | { 0x4AU, 1U, 0x04UL, 0x04UL }, /* port 1 */ | |
49 | }; | |
50 | ||
c961922b AC |
51 | if (!pci_test_config_bits(pdev, &artop_enable_bits[ap->port_no])) |
52 | return -ENOENT; | |
d4b2bab4 | 53 | |
9363c382 | 54 | return ata_sff_prereset(link, deadline); |
669a5db4 JG |
55 | } |
56 | ||
669a5db4 JG |
57 | /** |
58 | * artop6260_pre_reset - check for 40/80 pin | |
cc0680a5 | 59 | * @link: link |
d4b2bab4 | 60 | * @deadline: deadline jiffies for the operation |
669a5db4 JG |
61 | * |
62 | * The ARTOP hardware reports the cable detect bits in register 0x49. | |
63 | * Nothing complicated needed here. | |
64 | */ | |
65 | ||
cc0680a5 | 66 | static int artop6260_pre_reset(struct ata_link *link, unsigned long deadline) |
669a5db4 JG |
67 | { |
68 | static const struct pci_bits artop_enable_bits[] = { | |
69 | { 0x4AU, 1U, 0x02UL, 0x02UL }, /* port 0 */ | |
70 | { 0x4AU, 1U, 0x04UL, 0x04UL }, /* port 1 */ | |
71 | }; | |
72 | ||
cc0680a5 | 73 | struct ata_port *ap = link->ap; |
669a5db4 | 74 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); |
669a5db4 JG |
75 | |
76 | /* Odd numbered device ids are the units with enable bits (the -R cards) */ | |
c961922b AC |
77 | if (pdev->device % 1 && !pci_test_config_bits(pdev, &artop_enable_bits[ap->port_no])) |
78 | return -ENOENT; | |
27c78b37 | 79 | |
9363c382 | 80 | return ata_sff_prereset(link, deadline); |
a73984a0 | 81 | } |
c961922b | 82 | |
a73984a0 JG |
83 | /** |
84 | * artop6260_cable_detect - identify cable type | |
85 | * @ap: Port | |
86 | * | |
c343a839 | 87 | * Identify the cable type for the ARTOP interface in question |
a73984a0 | 88 | */ |
a617c09f | 89 | |
a73984a0 JG |
90 | static int artop6260_cable_detect(struct ata_port *ap) |
91 | { | |
92 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
93 | u8 tmp; | |
669a5db4 | 94 | pci_read_config_byte(pdev, 0x49, &tmp); |
3f9dd27a | 95 | if (tmp & (1 << ap->port_no)) |
a73984a0 JG |
96 | return ATA_CBL_PATA40; |
97 | return ATA_CBL_PATA80; | |
669a5db4 JG |
98 | } |
99 | ||
669a5db4 JG |
100 | /** |
101 | * artop6210_load_piomode - Load a set of PATA PIO timings | |
102 | * @ap: Port whose timings we are configuring | |
103 | * @adev: Device | |
104 | * @pio: PIO mode | |
105 | * | |
106 | * Set PIO mode for device, in host controller PCI config space. This | |
107 | * is used both to set PIO timings in PIO mode and also to set the | |
108 | * matching PIO clocking for UDMA, as well as the MWDMA timings. | |
109 | * | |
110 | * LOCKING: | |
111 | * None (inherited from caller). | |
112 | */ | |
113 | ||
114 | static void artop6210_load_piomode(struct ata_port *ap, struct ata_device *adev, unsigned int pio) | |
115 | { | |
116 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
117 | int dn = adev->devno + 2 * ap->port_no; | |
118 | const u16 timing[2][5] = { | |
119 | { 0x0000, 0x000A, 0x0008, 0x0303, 0x0301 }, | |
120 | { 0x0700, 0x070A, 0x0708, 0x0403, 0x0401 } | |
121 | ||
122 | }; | |
123 | /* Load the PIO timing active/recovery bits */ | |
124 | pci_write_config_word(pdev, 0x40 + 2 * dn, timing[clock][pio]); | |
125 | } | |
126 | ||
127 | /** | |
128 | * artop6210_set_piomode - Initialize host controller PATA PIO timings | |
129 | * @ap: Port whose timings we are configuring | |
130 | * @adev: Device we are configuring | |
131 | * | |
132 | * Set PIO mode for device, in host controller PCI config space. For | |
133 | * ARTOP we must also clear the UDMA bits if we are not doing UDMA. In | |
134 | * the event UDMA is used the later call to set_dmamode will set the | |
135 | * bits as required. | |
136 | * | |
137 | * LOCKING: | |
138 | * None (inherited from caller). | |
139 | */ | |
140 | ||
141 | static void artop6210_set_piomode(struct ata_port *ap, struct ata_device *adev) | |
142 | { | |
143 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
144 | int dn = adev->devno + 2 * ap->port_no; | |
145 | u8 ultra; | |
146 | ||
147 | artop6210_load_piomode(ap, adev, adev->pio_mode - XFER_PIO_0); | |
148 | ||
149 | /* Clear the UDMA mode bits (set_dmamode will redo this if needed) */ | |
150 | pci_read_config_byte(pdev, 0x54, &ultra); | |
151 | ultra &= ~(3 << (2 * dn)); | |
152 | pci_write_config_byte(pdev, 0x54, ultra); | |
153 | } | |
154 | ||
155 | /** | |
156 | * artop6260_load_piomode - Initialize host controller PATA PIO timings | |
157 | * @ap: Port whose timings we are configuring | |
158 | * @adev: Device we are configuring | |
159 | * @pio: PIO mode | |
160 | * | |
161 | * Set PIO mode for device, in host controller PCI config space. The | |
162 | * ARTOP6260 and relatives store the timing data differently. | |
163 | * | |
164 | * LOCKING: | |
165 | * None (inherited from caller). | |
166 | */ | |
167 | ||
168 | static void artop6260_load_piomode (struct ata_port *ap, struct ata_device *adev, unsigned int pio) | |
169 | { | |
170 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
171 | int dn = adev->devno + 2 * ap->port_no; | |
172 | const u8 timing[2][5] = { | |
173 | { 0x00, 0x0A, 0x08, 0x33, 0x31 }, | |
174 | { 0x70, 0x7A, 0x78, 0x43, 0x41 } | |
175 | ||
176 | }; | |
177 | /* Load the PIO timing active/recovery bits */ | |
178 | pci_write_config_byte(pdev, 0x40 + dn, timing[clock][pio]); | |
179 | } | |
180 | ||
181 | /** | |
182 | * artop6260_set_piomode - Initialize host controller PATA PIO timings | |
183 | * @ap: Port whose timings we are configuring | |
184 | * @adev: Device we are configuring | |
185 | * | |
186 | * Set PIO mode for device, in host controller PCI config space. For | |
187 | * ARTOP we must also clear the UDMA bits if we are not doing UDMA. In | |
188 | * the event UDMA is used the later call to set_dmamode will set the | |
189 | * bits as required. | |
190 | * | |
191 | * LOCKING: | |
192 | * None (inherited from caller). | |
193 | */ | |
194 | ||
195 | static void artop6260_set_piomode(struct ata_port *ap, struct ata_device *adev) | |
196 | { | |
197 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
198 | u8 ultra; | |
199 | ||
200 | artop6260_load_piomode(ap, adev, adev->pio_mode - XFER_PIO_0); | |
201 | ||
202 | /* Clear the UDMA mode bits (set_dmamode will redo this if needed) */ | |
203 | pci_read_config_byte(pdev, 0x44 + ap->port_no, &ultra); | |
204 | ultra &= ~(7 << (4 * adev->devno)); /* One nibble per drive */ | |
205 | pci_write_config_byte(pdev, 0x44 + ap->port_no, ultra); | |
206 | } | |
207 | ||
208 | /** | |
209 | * artop6210_set_dmamode - Initialize host controller PATA PIO timings | |
210 | * @ap: Port whose timings we are configuring | |
a73984a0 | 211 | * @adev: Device whose timings we are configuring |
669a5db4 JG |
212 | * |
213 | * Set DMA mode for device, in host controller PCI config space. | |
214 | * | |
215 | * LOCKING: | |
216 | * None (inherited from caller). | |
217 | */ | |
218 | ||
219 | static void artop6210_set_dmamode (struct ata_port *ap, struct ata_device *adev) | |
220 | { | |
221 | unsigned int pio; | |
222 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
223 | int dn = adev->devno + 2 * ap->port_no; | |
224 | u8 ultra; | |
225 | ||
226 | if (adev->dma_mode == XFER_MW_DMA_0) | |
227 | pio = 1; | |
228 | else | |
229 | pio = 4; | |
230 | ||
231 | /* Load the PIO timing active/recovery bits */ | |
232 | artop6210_load_piomode(ap, adev, pio); | |
233 | ||
234 | pci_read_config_byte(pdev, 0x54, &ultra); | |
235 | ultra &= ~(3 << (2 * dn)); | |
236 | ||
237 | /* Add ultra DMA bits if in UDMA mode */ | |
238 | if (adev->dma_mode >= XFER_UDMA_0) { | |
239 | u8 mode = (adev->dma_mode - XFER_UDMA_0) + 1 - clock; | |
240 | if (mode == 0) | |
241 | mode = 1; | |
242 | ultra |= (mode << (2 * dn)); | |
243 | } | |
244 | pci_write_config_byte(pdev, 0x54, ultra); | |
245 | } | |
246 | ||
247 | /** | |
248 | * artop6260_set_dmamode - Initialize host controller PATA PIO timings | |
249 | * @ap: Port whose timings we are configuring | |
250 | * @adev: Device we are configuring | |
251 | * | |
252 | * Set DMA mode for device, in host controller PCI config space. The | |
253 | * ARTOP6260 and relatives store the timing data differently. | |
254 | * | |
255 | * LOCKING: | |
256 | * None (inherited from caller). | |
257 | */ | |
258 | ||
259 | static void artop6260_set_dmamode (struct ata_port *ap, struct ata_device *adev) | |
260 | { | |
261 | unsigned int pio = adev->pio_mode - XFER_PIO_0; | |
262 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
263 | u8 ultra; | |
264 | ||
265 | if (adev->dma_mode == XFER_MW_DMA_0) | |
266 | pio = 1; | |
267 | else | |
268 | pio = 4; | |
269 | ||
270 | /* Load the PIO timing active/recovery bits */ | |
271 | artop6260_load_piomode(ap, adev, pio); | |
272 | ||
273 | /* Add ultra DMA bits if in UDMA mode */ | |
274 | pci_read_config_byte(pdev, 0x44 + ap->port_no, &ultra); | |
275 | ultra &= ~(7 << (4 * adev->devno)); /* One nibble per drive */ | |
276 | if (adev->dma_mode >= XFER_UDMA_0) { | |
277 | u8 mode = adev->dma_mode - XFER_UDMA_0 + 1 - clock; | |
278 | if (mode == 0) | |
279 | mode = 1; | |
280 | ultra |= (mode << (4 * adev->devno)); | |
281 | } | |
282 | pci_write_config_byte(pdev, 0x44 + ap->port_no, ultra); | |
283 | } | |
284 | ||
140d6fed AC |
285 | /** |
286 | * artop_6210_qc_defer - implement serialization | |
287 | * @qc: command | |
288 | * | |
289 | * Issue commands per host on this chip. | |
290 | */ | |
291 | ||
292 | static int artop6210_qc_defer(struct ata_queued_cmd *qc) | |
293 | { | |
294 | struct ata_host *host = qc->ap->host; | |
295 | struct ata_port *alt = host->ports[1 ^ qc->ap->port_no]; | |
296 | int rc; | |
297 | ||
298 | /* First apply the usual rules */ | |
299 | rc = ata_std_qc_defer(qc); | |
300 | if (rc != 0) | |
301 | return rc; | |
302 | ||
303 | /* Now apply serialization rules. Only allow a command if the | |
304 | other channel state machine is idle */ | |
305 | if (alt && alt->qc_active) | |
306 | return ATA_DEFER_PORT; | |
307 | return 0; | |
308 | } | |
309 | ||
669a5db4 | 310 | static struct scsi_host_template artop_sht = { |
68d1d07b | 311 | ATA_BMDMA_SHT(DRV_NAME), |
669a5db4 JG |
312 | }; |
313 | ||
029cfd6b TH |
314 | static struct ata_port_operations artop6210_ops = { |
315 | .inherits = &ata_bmdma_port_ops, | |
316 | .cable_detect = ata_cable_40wire, | |
669a5db4 JG |
317 | .set_piomode = artop6210_set_piomode, |
318 | .set_dmamode = artop6210_set_dmamode, | |
a1efdaba | 319 | .prereset = artop6210_pre_reset, |
140d6fed | 320 | .qc_defer = artop6210_qc_defer, |
669a5db4 JG |
321 | }; |
322 | ||
029cfd6b TH |
323 | static struct ata_port_operations artop6260_ops = { |
324 | .inherits = &ata_bmdma_port_ops, | |
325 | .cable_detect = artop6260_cable_detect, | |
669a5db4 JG |
326 | .set_piomode = artop6260_set_piomode, |
327 | .set_dmamode = artop6260_set_dmamode, | |
a1efdaba | 328 | .prereset = artop6260_pre_reset, |
669a5db4 JG |
329 | }; |
330 | ||
331 | ||
332 | /** | |
333 | * artop_init_one - Register ARTOP ATA PCI device with kernel services | |
334 | * @pdev: PCI device to register | |
335 | * @ent: Entry in artop_pci_tbl matching with @pdev | |
336 | * | |
337 | * Called from kernel PCI layer. | |
338 | * | |
339 | * LOCKING: | |
340 | * Inherited from PCI layer (may sleep). | |
341 | * | |
342 | * RETURNS: | |
343 | * Zero on success, or -ERRNO value. | |
344 | */ | |
345 | ||
346 | static int artop_init_one (struct pci_dev *pdev, const struct pci_device_id *id) | |
347 | { | |
348 | static int printed_version; | |
1626aeb8 | 349 | static const struct ata_port_info info_6210 = { |
1d2808fd | 350 | .flags = ATA_FLAG_SLAVE_POSS, |
14bdef98 EIB |
351 | .pio_mask = ATA_PIO4, |
352 | .mwdma_mask = ATA_MWDMA2, | |
669a5db4 JG |
353 | .udma_mask = ATA_UDMA2, |
354 | .port_ops = &artop6210_ops, | |
355 | }; | |
1626aeb8 | 356 | static const struct ata_port_info info_626x = { |
1d2808fd | 357 | .flags = ATA_FLAG_SLAVE_POSS, |
14bdef98 EIB |
358 | .pio_mask = ATA_PIO4, |
359 | .mwdma_mask = ATA_MWDMA2, | |
669a5db4 JG |
360 | .udma_mask = ATA_UDMA4, |
361 | .port_ops = &artop6260_ops, | |
362 | }; | |
be456b77 | 363 | static const struct ata_port_info info_628x = { |
1d2808fd | 364 | .flags = ATA_FLAG_SLAVE_POSS, |
14bdef98 EIB |
365 | .pio_mask = ATA_PIO4, |
366 | .mwdma_mask = ATA_MWDMA2, | |
669a5db4 JG |
367 | .udma_mask = ATA_UDMA5, |
368 | .port_ops = &artop6260_ops, | |
369 | }; | |
be456b77 | 370 | static const struct ata_port_info info_628x_fast = { |
be456b77 | 371 | .flags = ATA_FLAG_SLAVE_POSS, |
14bdef98 EIB |
372 | .pio_mask = ATA_PIO4, |
373 | .mwdma_mask = ATA_MWDMA2, | |
be456b77 BZ |
374 | .udma_mask = ATA_UDMA6, |
375 | .port_ops = &artop6260_ops, | |
376 | }; | |
1626aeb8 | 377 | const struct ata_port_info *ppi[] = { NULL, NULL }; |
f08048e9 | 378 | int rc; |
669a5db4 JG |
379 | |
380 | if (!printed_version++) | |
381 | dev_printk(KERN_DEBUG, &pdev->dev, | |
382 | "version " DRV_VERSION "\n"); | |
383 | ||
f08048e9 TH |
384 | rc = pcim_enable_device(pdev); |
385 | if (rc) | |
386 | return rc; | |
387 | ||
669a5db4 | 388 | if (id->driver_data == 0) { /* 6210 variant */ |
1626aeb8 | 389 | ppi[0] = &info_6210; |
669a5db4 JG |
390 | /* BIOS may have left us in UDMA, clear it before libata probe */ |
391 | pci_write_config_byte(pdev, 0x54, 0); | |
669a5db4 JG |
392 | } |
393 | else if (id->driver_data == 1) /* 6260 */ | |
1626aeb8 | 394 | ppi[0] = &info_626x; |
be456b77 | 395 | else if (id->driver_data == 2) { /* 6280 or 6280 + fast */ |
669a5db4 JG |
396 | unsigned long io = pci_resource_start(pdev, 4); |
397 | u8 reg; | |
398 | ||
be456b77 | 399 | ppi[0] = &info_628x; |
669a5db4 | 400 | if (inb(io) & 0x10) |
be456b77 | 401 | ppi[0] = &info_628x_fast; |
669a5db4 JG |
402 | /* Mac systems come up with some registers not set as we |
403 | will need them */ | |
404 | ||
405 | /* Clear reset & test bits */ | |
406 | pci_read_config_byte(pdev, 0x49, ®); | |
407 | pci_write_config_byte(pdev, 0x49, reg & ~ 0x30); | |
408 | ||
409 | /* PCI latency must be > 0x80 for burst mode, tweak it | |
410 | * if required. | |
411 | */ | |
412 | pci_read_config_byte(pdev, PCI_LATENCY_TIMER, ®); | |
413 | if (reg <= 0x80) | |
414 | pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x90); | |
415 | ||
416 | /* Enable IRQ output and burst mode */ | |
417 | pci_read_config_byte(pdev, 0x4a, ®); | |
418 | pci_write_config_byte(pdev, 0x4a, (reg & ~0x01) | 0x80); | |
419 | ||
420 | } | |
15a7c3bb | 421 | |
1626aeb8 | 422 | BUG_ON(ppi[0] == NULL); |
15a7c3bb | 423 | |
9363c382 | 424 | return ata_pci_sff_init_one(pdev, ppi, &artop_sht, NULL); |
669a5db4 JG |
425 | } |
426 | ||
427 | static const struct pci_device_id artop_pci_tbl[] = { | |
2d2744fc JG |
428 | { PCI_VDEVICE(ARTOP, 0x0005), 0 }, |
429 | { PCI_VDEVICE(ARTOP, 0x0006), 1 }, | |
430 | { PCI_VDEVICE(ARTOP, 0x0007), 1 }, | |
431 | { PCI_VDEVICE(ARTOP, 0x0008), 2 }, | |
432 | { PCI_VDEVICE(ARTOP, 0x0009), 2 }, | |
433 | ||
669a5db4 JG |
434 | { } /* terminate list */ |
435 | }; | |
436 | ||
437 | static struct pci_driver artop_pci_driver = { | |
438 | .name = DRV_NAME, | |
439 | .id_table = artop_pci_tbl, | |
440 | .probe = artop_init_one, | |
441 | .remove = ata_pci_remove_one, | |
442 | }; | |
443 | ||
444 | static int __init artop_init(void) | |
445 | { | |
446 | return pci_register_driver(&artop_pci_driver); | |
447 | } | |
448 | ||
449 | static void __exit artop_exit(void) | |
450 | { | |
451 | pci_unregister_driver(&artop_pci_driver); | |
452 | } | |
453 | ||
669a5db4 JG |
454 | module_init(artop_init); |
455 | module_exit(artop_exit); | |
456 | ||
457 | MODULE_AUTHOR("Alan Cox"); | |
458 | MODULE_DESCRIPTION("SCSI low-level driver for ARTOP PATA"); | |
459 | MODULE_LICENSE("GPL"); | |
460 | MODULE_DEVICE_TABLE(pci, artop_pci_tbl); | |
461 | MODULE_VERSION(DRV_VERSION); | |
462 |