blob: 2cd30761ca1f3f471fac39c6cc913ba02ac24684 [file] [log] [blame]
Jeff Garzik669a5db2006-08-29 18:12:40 -04001/*
2 * pata_artop.c - ARTOP ATA controller driver
3 *
4 * (C) 2006 Red Hat <alan@redhat.com>
5 *
6 * Based in part on drivers/ide/pci/aec62xx.c
7 * Copyright (C) 1999-2002 Andre Hedrick <andre@linux-ide.org>
8 * 865/865R fixes for Macintosh card version from a patch to the old
9 * driver by Thibaut VARENE <varenet@parisc-linux.org>
10 * When setting the PCI latency we must set 0x80 or higher for burst
11 * performance Alessandro Zummo <alessandro.zummo@towertech.it>
12 *
13 * TODO
14 * 850 serialization once the core supports it
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"
Alan Coxc9619222006-09-26 17:53:38 +010031#define DRV_VERSION "0.4.2"
Jeff Garzik669a5db2006-08-29 18:12:40 -040032
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
40static int clock = 0;
41
42static int artop6210_pre_reset(struct ata_port *ap)
43{
44 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
45 const struct pci_bits artop_enable_bits[] = {
46 { 0x4AU, 1U, 0x02UL, 0x02UL }, /* port 0 */
47 { 0x4AU, 1U, 0x04UL, 0x04UL }, /* port 1 */
48 };
49
Alan Coxc9619222006-09-26 17:53:38 +010050 if (!pci_test_config_bits(pdev, &artop_enable_bits[ap->port_no]))
51 return -ENOENT;
52
Jeff Garzik669a5db2006-08-29 18:12:40 -040053 ap->cbl = ATA_CBL_PATA40;
54 return ata_std_prereset(ap);
55}
56
57/**
58 * artop6210_error_handler - Probe specified port on PATA host controller
59 * @ap: Port to probe
60 *
61 * LOCKING:
62 * None (inherited from caller).
63 */
64
65static void artop6210_error_handler(struct ata_port *ap)
66{
67 ata_bmdma_drive_eh(ap, artop6210_pre_reset,
68 ata_std_softreset, NULL,
69 ata_std_postreset);
70}
71
72/**
73 * artop6260_pre_reset - check for 40/80 pin
74 * @ap: Port
75 *
76 * The ARTOP hardware reports the cable detect bits in register 0x49.
77 * Nothing complicated needed here.
78 */
79
80static int artop6260_pre_reset(struct ata_port *ap)
81{
82 static const struct pci_bits artop_enable_bits[] = {
83 { 0x4AU, 1U, 0x02UL, 0x02UL }, /* port 0 */
84 { 0x4AU, 1U, 0x04UL, 0x04UL }, /* port 1 */
85 };
86
87 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
88 u8 tmp;
89
90 /* Odd numbered device ids are the units with enable bits (the -R cards) */
Alan Coxc9619222006-09-26 17:53:38 +010091 if (pdev->device % 1 && !pci_test_config_bits(pdev, &artop_enable_bits[ap->port_no]))
92 return -ENOENT;
93
Jeff Garzik669a5db2006-08-29 18:12:40 -040094 pci_read_config_byte(pdev, 0x49, &tmp);
Alexey Dobriyan3f9dd272006-11-10 22:52:46 +030095 if (tmp & (1 << ap->port_no))
Jeff Garzik669a5db2006-08-29 18:12:40 -040096 ap->cbl = ATA_CBL_PATA40;
97 else
98 ap->cbl = ATA_CBL_PATA80;
99 return ata_std_prereset(ap);
100}
101
102/**
103 * artop6260_error_handler - Probe specified port on PATA host controller
104 * @ap: Port to probe
105 *
106 * LOCKING:
107 * None (inherited from caller).
108 */
109
110static void artop6260_error_handler(struct ata_port *ap)
111{
112 ata_bmdma_drive_eh(ap, artop6260_pre_reset,
113 ata_std_softreset, NULL,
114 ata_std_postreset);
115}
116
117/**
118 * artop6210_load_piomode - Load a set of PATA PIO timings
119 * @ap: Port whose timings we are configuring
120 * @adev: Device
121 * @pio: PIO mode
122 *
123 * Set PIO mode for device, in host controller PCI config space. This
124 * is used both to set PIO timings in PIO mode and also to set the
125 * matching PIO clocking for UDMA, as well as the MWDMA timings.
126 *
127 * LOCKING:
128 * None (inherited from caller).
129 */
130
131static void artop6210_load_piomode(struct ata_port *ap, struct ata_device *adev, unsigned int pio)
132{
133 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
134 int dn = adev->devno + 2 * ap->port_no;
135 const u16 timing[2][5] = {
136 { 0x0000, 0x000A, 0x0008, 0x0303, 0x0301 },
137 { 0x0700, 0x070A, 0x0708, 0x0403, 0x0401 }
138
139 };
140 /* Load the PIO timing active/recovery bits */
141 pci_write_config_word(pdev, 0x40 + 2 * dn, timing[clock][pio]);
142}
143
144/**
145 * artop6210_set_piomode - Initialize host controller PATA PIO timings
146 * @ap: Port whose timings we are configuring
147 * @adev: Device we are configuring
148 *
149 * Set PIO mode for device, in host controller PCI config space. For
150 * ARTOP we must also clear the UDMA bits if we are not doing UDMA. In
151 * the event UDMA is used the later call to set_dmamode will set the
152 * bits as required.
153 *
154 * LOCKING:
155 * None (inherited from caller).
156 */
157
158static void artop6210_set_piomode(struct ata_port *ap, struct ata_device *adev)
159{
160 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
161 int dn = adev->devno + 2 * ap->port_no;
162 u8 ultra;
163
164 artop6210_load_piomode(ap, adev, adev->pio_mode - XFER_PIO_0);
165
166 /* Clear the UDMA mode bits (set_dmamode will redo this if needed) */
167 pci_read_config_byte(pdev, 0x54, &ultra);
168 ultra &= ~(3 << (2 * dn));
169 pci_write_config_byte(pdev, 0x54, ultra);
170}
171
172/**
173 * artop6260_load_piomode - Initialize host controller PATA PIO timings
174 * @ap: Port whose timings we are configuring
175 * @adev: Device we are configuring
176 * @pio: PIO mode
177 *
178 * Set PIO mode for device, in host controller PCI config space. The
179 * ARTOP6260 and relatives store the timing data differently.
180 *
181 * LOCKING:
182 * None (inherited from caller).
183 */
184
185static void artop6260_load_piomode (struct ata_port *ap, struct ata_device *adev, unsigned int pio)
186{
187 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
188 int dn = adev->devno + 2 * ap->port_no;
189 const u8 timing[2][5] = {
190 { 0x00, 0x0A, 0x08, 0x33, 0x31 },
191 { 0x70, 0x7A, 0x78, 0x43, 0x41 }
192
193 };
194 /* Load the PIO timing active/recovery bits */
195 pci_write_config_byte(pdev, 0x40 + dn, timing[clock][pio]);
196}
197
198/**
199 * artop6260_set_piomode - Initialize host controller PATA PIO timings
200 * @ap: Port whose timings we are configuring
201 * @adev: Device we are configuring
202 *
203 * Set PIO mode for device, in host controller PCI config space. For
204 * ARTOP we must also clear the UDMA bits if we are not doing UDMA. In
205 * the event UDMA is used the later call to set_dmamode will set the
206 * bits as required.
207 *
208 * LOCKING:
209 * None (inherited from caller).
210 */
211
212static void artop6260_set_piomode(struct ata_port *ap, struct ata_device *adev)
213{
214 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
215 u8 ultra;
216
217 artop6260_load_piomode(ap, adev, adev->pio_mode - XFER_PIO_0);
218
219 /* Clear the UDMA mode bits (set_dmamode will redo this if needed) */
220 pci_read_config_byte(pdev, 0x44 + ap->port_no, &ultra);
221 ultra &= ~(7 << (4 * adev->devno)); /* One nibble per drive */
222 pci_write_config_byte(pdev, 0x44 + ap->port_no, ultra);
223}
224
225/**
226 * artop6210_set_dmamode - Initialize host controller PATA PIO timings
227 * @ap: Port whose timings we are configuring
228 * @adev: um
229 *
230 * Set DMA mode for device, in host controller PCI config space.
231 *
232 * LOCKING:
233 * None (inherited from caller).
234 */
235
236static void artop6210_set_dmamode (struct ata_port *ap, struct ata_device *adev)
237{
238 unsigned int pio;
239 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
240 int dn = adev->devno + 2 * ap->port_no;
241 u8 ultra;
242
243 if (adev->dma_mode == XFER_MW_DMA_0)
244 pio = 1;
245 else
246 pio = 4;
247
248 /* Load the PIO timing active/recovery bits */
249 artop6210_load_piomode(ap, adev, pio);
250
251 pci_read_config_byte(pdev, 0x54, &ultra);
252 ultra &= ~(3 << (2 * dn));
253
254 /* Add ultra DMA bits if in UDMA mode */
255 if (adev->dma_mode >= XFER_UDMA_0) {
256 u8 mode = (adev->dma_mode - XFER_UDMA_0) + 1 - clock;
257 if (mode == 0)
258 mode = 1;
259 ultra |= (mode << (2 * dn));
260 }
261 pci_write_config_byte(pdev, 0x54, ultra);
262}
263
264/**
265 * artop6260_set_dmamode - Initialize host controller PATA PIO timings
266 * @ap: Port whose timings we are configuring
267 * @adev: Device we are configuring
268 *
269 * Set DMA mode for device, in host controller PCI config space. The
270 * ARTOP6260 and relatives store the timing data differently.
271 *
272 * LOCKING:
273 * None (inherited from caller).
274 */
275
276static void artop6260_set_dmamode (struct ata_port *ap, struct ata_device *adev)
277{
278 unsigned int pio = adev->pio_mode - XFER_PIO_0;
279 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
280 u8 ultra;
281
282 if (adev->dma_mode == XFER_MW_DMA_0)
283 pio = 1;
284 else
285 pio = 4;
286
287 /* Load the PIO timing active/recovery bits */
288 artop6260_load_piomode(ap, adev, pio);
289
290 /* Add ultra DMA bits if in UDMA mode */
291 pci_read_config_byte(pdev, 0x44 + ap->port_no, &ultra);
292 ultra &= ~(7 << (4 * adev->devno)); /* One nibble per drive */
293 if (adev->dma_mode >= XFER_UDMA_0) {
294 u8 mode = adev->dma_mode - XFER_UDMA_0 + 1 - clock;
295 if (mode == 0)
296 mode = 1;
297 ultra |= (mode << (4 * adev->devno));
298 }
299 pci_write_config_byte(pdev, 0x44 + ap->port_no, ultra);
300}
301
302static struct scsi_host_template artop_sht = {
303 .module = THIS_MODULE,
304 .name = DRV_NAME,
305 .ioctl = ata_scsi_ioctl,
306 .queuecommand = ata_scsi_queuecmd,
307 .can_queue = ATA_DEF_QUEUE,
308 .this_id = ATA_SHT_THIS_ID,
309 .sg_tablesize = LIBATA_MAX_PRD,
310 .max_sectors = ATA_MAX_SECTORS,
311 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
312 .emulated = ATA_SHT_EMULATED,
313 .use_clustering = ATA_SHT_USE_CLUSTERING,
314 .proc_name = DRV_NAME,
315 .dma_boundary = ATA_DMA_BOUNDARY,
316 .slave_configure = ata_scsi_slave_config,
Tejun Heoafdfe892006-11-29 11:26:47 +0900317 .slave_destroy = ata_scsi_slave_destroy,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400318 .bios_param = ata_std_bios_param,
319};
320
321static const struct ata_port_operations artop6210_ops = {
322 .port_disable = ata_port_disable,
323 .set_piomode = artop6210_set_piomode,
324 .set_dmamode = artop6210_set_dmamode,
325 .mode_filter = ata_pci_default_filter,
326
327 .tf_load = ata_tf_load,
328 .tf_read = ata_tf_read,
329 .check_status = ata_check_status,
330 .exec_command = ata_exec_command,
331 .dev_select = ata_std_dev_select,
332
333 .freeze = ata_bmdma_freeze,
334 .thaw = ata_bmdma_thaw,
335 .error_handler = artop6210_error_handler,
336 .post_internal_cmd = ata_bmdma_post_internal_cmd,
337
338 .bmdma_setup = ata_bmdma_setup,
339 .bmdma_start = ata_bmdma_start,
340 .bmdma_stop = ata_bmdma_stop,
341 .bmdma_status = ata_bmdma_status,
342 .qc_prep = ata_qc_prep,
343 .qc_issue = ata_qc_issue_prot,
Jeff Garzikbda30282006-09-27 05:41:13 -0400344
Jeff Garzik669a5db2006-08-29 18:12:40 -0400345 .data_xfer = ata_pio_data_xfer,
346
347 .irq_handler = ata_interrupt,
348 .irq_clear = ata_bmdma_irq_clear,
349
350 .port_start = ata_port_start,
351 .port_stop = ata_port_stop,
352 .host_stop = ata_host_stop,
353};
354
355static const struct ata_port_operations artop6260_ops = {
356 .port_disable = ata_port_disable,
357 .set_piomode = artop6260_set_piomode,
358 .set_dmamode = artop6260_set_dmamode,
359
360 .tf_load = ata_tf_load,
361 .tf_read = ata_tf_read,
362 .check_status = ata_check_status,
363 .exec_command = ata_exec_command,
364 .dev_select = ata_std_dev_select,
365
366 .freeze = ata_bmdma_freeze,
367 .thaw = ata_bmdma_thaw,
368 .error_handler = artop6260_error_handler,
369 .post_internal_cmd = ata_bmdma_post_internal_cmd,
370
371 .bmdma_setup = ata_bmdma_setup,
372 .bmdma_start = ata_bmdma_start,
373 .bmdma_stop = ata_bmdma_stop,
374 .bmdma_status = ata_bmdma_status,
375 .qc_prep = ata_qc_prep,
376 .qc_issue = ata_qc_issue_prot,
377 .data_xfer = ata_pio_data_xfer,
378
Jeff Garzik669a5db2006-08-29 18:12:40 -0400379 .irq_handler = ata_interrupt,
380 .irq_clear = ata_bmdma_irq_clear,
381
382 .port_start = ata_port_start,
383 .port_stop = ata_port_stop,
384 .host_stop = ata_host_stop,
385};
386
387
388/**
389 * artop_init_one - Register ARTOP ATA PCI device with kernel services
390 * @pdev: PCI device to register
391 * @ent: Entry in artop_pci_tbl matching with @pdev
392 *
393 * Called from kernel PCI layer.
394 *
395 * LOCKING:
396 * Inherited from PCI layer (may sleep).
397 *
398 * RETURNS:
399 * Zero on success, or -ERRNO value.
400 */
401
402static int artop_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
403{
404 static int printed_version;
405 static struct ata_port_info info_6210 = {
406 .sht = &artop_sht,
407 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
408 .pio_mask = 0x1f, /* pio0-4 */
409 .mwdma_mask = 0x07, /* mwdma0-2 */
410 .udma_mask = ATA_UDMA2,
411 .port_ops = &artop6210_ops,
412 };
413 static struct ata_port_info info_626x = {
414 .sht = &artop_sht,
415 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
416 .pio_mask = 0x1f, /* pio0-4 */
417 .mwdma_mask = 0x07, /* mwdma0-2 */
418 .udma_mask = ATA_UDMA4,
419 .port_ops = &artop6260_ops,
420 };
421 static struct ata_port_info info_626x_fast = {
422 .sht = &artop_sht,
423 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
424 .pio_mask = 0x1f, /* pio0-4 */
425 .mwdma_mask = 0x07, /* mwdma0-2 */
426 .udma_mask = ATA_UDMA5,
427 .port_ops = &artop6260_ops,
428 };
429 struct ata_port_info *port_info[2];
Jeff Garzik15a7c3b2006-10-01 10:38:22 -0400430 struct ata_port_info *info = NULL;
Jeff Garzik669a5db2006-08-29 18:12:40 -0400431 int ports = 2;
432
433 if (!printed_version++)
434 dev_printk(KERN_DEBUG, &pdev->dev,
435 "version " DRV_VERSION "\n");
436
437 if (id->driver_data == 0) { /* 6210 variant */
438 info = &info_6210;
439 /* BIOS may have left us in UDMA, clear it before libata probe */
440 pci_write_config_byte(pdev, 0x54, 0);
441 /* For the moment (also lacks dsc) */
442 printk(KERN_WARNING "ARTOP 6210 requires serialize functionality not yet supported by libata.\n");
443 printk(KERN_WARNING "Secondary ATA ports will not be activated.\n");
444 ports = 1;
445 }
446 else if (id->driver_data == 1) /* 6260 */
447 info = &info_626x;
448 else if (id->driver_data == 2) { /* 6260 or 6260 + fast */
449 unsigned long io = pci_resource_start(pdev, 4);
450 u8 reg;
451
452 info = &info_626x;
453 if (inb(io) & 0x10)
454 info = &info_626x_fast;
455 /* Mac systems come up with some registers not set as we
456 will need them */
457
458 /* Clear reset & test bits */
459 pci_read_config_byte(pdev, 0x49, &reg);
460 pci_write_config_byte(pdev, 0x49, reg & ~ 0x30);
461
462 /* PCI latency must be > 0x80 for burst mode, tweak it
463 * if required.
464 */
465 pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &reg);
466 if (reg <= 0x80)
467 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x90);
468
469 /* Enable IRQ output and burst mode */
470 pci_read_config_byte(pdev, 0x4a, &reg);
471 pci_write_config_byte(pdev, 0x4a, (reg & ~0x01) | 0x80);
472
473 }
Jeff Garzik15a7c3b2006-10-01 10:38:22 -0400474
475 BUG_ON(info == NULL);
476
Jeff Garzik669a5db2006-08-29 18:12:40 -0400477 port_info[0] = port_info[1] = info;
478 return ata_pci_init_one(pdev, port_info, ports);
479}
480
481static const struct pci_device_id artop_pci_tbl[] = {
Jeff Garzik2d2744f2006-09-28 20:21:59 -0400482 { PCI_VDEVICE(ARTOP, 0x0005), 0 },
483 { PCI_VDEVICE(ARTOP, 0x0006), 1 },
484 { PCI_VDEVICE(ARTOP, 0x0007), 1 },
485 { PCI_VDEVICE(ARTOP, 0x0008), 2 },
486 { PCI_VDEVICE(ARTOP, 0x0009), 2 },
487
Jeff Garzik669a5db2006-08-29 18:12:40 -0400488 { } /* terminate list */
489};
490
491static struct pci_driver artop_pci_driver = {
492 .name = DRV_NAME,
493 .id_table = artop_pci_tbl,
494 .probe = artop_init_one,
495 .remove = ata_pci_remove_one,
496};
497
498static int __init artop_init(void)
499{
500 return pci_register_driver(&artop_pci_driver);
501}
502
503static void __exit artop_exit(void)
504{
505 pci_unregister_driver(&artop_pci_driver);
506}
507
Jeff Garzik669a5db2006-08-29 18:12:40 -0400508module_init(artop_init);
509module_exit(artop_exit);
510
511MODULE_AUTHOR("Alan Cox");
512MODULE_DESCRIPTION("SCSI low-level driver for ARTOP PATA");
513MODULE_LICENSE("GPL");
514MODULE_DEVICE_TABLE(pci, artop_pci_tbl);
515MODULE_VERSION(DRV_VERSION);
516