2 * pata_artop.c - ARTOP ATA controller driver
4 * (C) 2006 Red Hat <alan@redhat.com>
5 * (C) 2007 Bartlomiej Zolnierkiewicz
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>
15 * 850 serialization once the core supports it
16 * Investigate no_dsc on 850R
20 #include <linux/kernel.h>
21 #include <linux/module.h>
22 #include <linux/pci.h>
23 #include <linux/init.h>
24 #include <linux/blkdev.h>
25 #include <linux/delay.h>
26 #include <linux/device.h>
27 #include <scsi/scsi_host.h>
28 #include <linux/libata.h>
29 #include <linux/ata.h>
31 #define DRV_NAME "pata_artop"
32 #define DRV_VERSION "0.4.4"
35 * The ARTOP has 33 Mhz and "over clocked" timing tables. Until we
36 * get PCI bus speed functionality we leave this as 0. Its a variable
37 * for when we get the functionality and also for folks wanting to
43 static int artop6210_pre_reset(struct ata_link *link, unsigned long deadline)
45 struct ata_port *ap = link->ap;
46 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
47 const struct pci_bits artop_enable_bits[] = {
48 { 0x4AU, 1U, 0x02UL, 0x02UL }, /* port 0 */
49 { 0x4AU, 1U, 0x04UL, 0x04UL }, /* port 1 */
52 if (!pci_test_config_bits(pdev, &artop_enable_bits[ap->port_no]))
55 return ata_std_prereset(link, deadline);
59 * artop6210_error_handler - Probe specified port on PATA host controller
63 * None (inherited from caller).
66 static void artop6210_error_handler(struct ata_port *ap)
68 ata_bmdma_drive_eh(ap, artop6210_pre_reset,
69 ata_std_softreset, NULL,
74 * artop6260_pre_reset - check for 40/80 pin
76 * @deadline: deadline jiffies for the operation
78 * The ARTOP hardware reports the cable detect bits in register 0x49.
79 * Nothing complicated needed here.
82 static int artop6260_pre_reset(struct ata_link *link, unsigned long deadline)
84 static const struct pci_bits artop_enable_bits[] = {
85 { 0x4AU, 1U, 0x02UL, 0x02UL }, /* port 0 */
86 { 0x4AU, 1U, 0x04UL, 0x04UL }, /* port 1 */
89 struct ata_port *ap = link->ap;
90 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
92 /* Odd numbered device ids are the units with enable bits (the -R cards) */
93 if (pdev->device % 1 && !pci_test_config_bits(pdev, &artop_enable_bits[ap->port_no]))
96 return ata_std_prereset(link, deadline);
100 * artop6260_cable_detect - identify cable type
103 * Identify the cable type for the ARTOP interface in question
106 static int artop6260_cable_detect(struct ata_port *ap)
108 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
110 pci_read_config_byte(pdev, 0x49, &tmp);
111 if (tmp & (1 << ap->port_no))
112 return ATA_CBL_PATA40;
113 return ATA_CBL_PATA80;
117 * artop6260_error_handler - Probe specified port on PATA host controller
121 * None (inherited from caller).
124 static void artop6260_error_handler(struct ata_port *ap)
126 ata_bmdma_drive_eh(ap, artop6260_pre_reset,
127 ata_std_softreset, NULL,
132 * artop6210_load_piomode - Load a set of PATA PIO timings
133 * @ap: Port whose timings we are configuring
137 * Set PIO mode for device, in host controller PCI config space. This
138 * is used both to set PIO timings in PIO mode and also to set the
139 * matching PIO clocking for UDMA, as well as the MWDMA timings.
142 * None (inherited from caller).
145 static void artop6210_load_piomode(struct ata_port *ap, struct ata_device *adev, unsigned int pio)
147 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
148 int dn = adev->devno + 2 * ap->port_no;
149 const u16 timing[2][5] = {
150 { 0x0000, 0x000A, 0x0008, 0x0303, 0x0301 },
151 { 0x0700, 0x070A, 0x0708, 0x0403, 0x0401 }
154 /* Load the PIO timing active/recovery bits */
155 pci_write_config_word(pdev, 0x40 + 2 * dn, timing[clock][pio]);
159 * artop6210_set_piomode - Initialize host controller PATA PIO timings
160 * @ap: Port whose timings we are configuring
161 * @adev: Device we are configuring
163 * Set PIO mode for device, in host controller PCI config space. For
164 * ARTOP we must also clear the UDMA bits if we are not doing UDMA. In
165 * the event UDMA is used the later call to set_dmamode will set the
169 * None (inherited from caller).
172 static void artop6210_set_piomode(struct ata_port *ap, struct ata_device *adev)
174 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
175 int dn = adev->devno + 2 * ap->port_no;
178 artop6210_load_piomode(ap, adev, adev->pio_mode - XFER_PIO_0);
180 /* Clear the UDMA mode bits (set_dmamode will redo this if needed) */
181 pci_read_config_byte(pdev, 0x54, &ultra);
182 ultra &= ~(3 << (2 * dn));
183 pci_write_config_byte(pdev, 0x54, ultra);
187 * artop6260_load_piomode - Initialize host controller PATA PIO timings
188 * @ap: Port whose timings we are configuring
189 * @adev: Device we are configuring
192 * Set PIO mode for device, in host controller PCI config space. The
193 * ARTOP6260 and relatives store the timing data differently.
196 * None (inherited from caller).
199 static void artop6260_load_piomode (struct ata_port *ap, struct ata_device *adev, unsigned int pio)
201 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
202 int dn = adev->devno + 2 * ap->port_no;
203 const u8 timing[2][5] = {
204 { 0x00, 0x0A, 0x08, 0x33, 0x31 },
205 { 0x70, 0x7A, 0x78, 0x43, 0x41 }
208 /* Load the PIO timing active/recovery bits */
209 pci_write_config_byte(pdev, 0x40 + dn, timing[clock][pio]);
213 * artop6260_set_piomode - Initialize host controller PATA PIO timings
214 * @ap: Port whose timings we are configuring
215 * @adev: Device we are configuring
217 * Set PIO mode for device, in host controller PCI config space. For
218 * ARTOP we must also clear the UDMA bits if we are not doing UDMA. In
219 * the event UDMA is used the later call to set_dmamode will set the
223 * None (inherited from caller).
226 static void artop6260_set_piomode(struct ata_port *ap, struct ata_device *adev)
228 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
231 artop6260_load_piomode(ap, adev, adev->pio_mode - XFER_PIO_0);
233 /* Clear the UDMA mode bits (set_dmamode will redo this if needed) */
234 pci_read_config_byte(pdev, 0x44 + ap->port_no, &ultra);
235 ultra &= ~(7 << (4 * adev->devno)); /* One nibble per drive */
236 pci_write_config_byte(pdev, 0x44 + ap->port_no, ultra);
240 * artop6210_set_dmamode - Initialize host controller PATA PIO timings
241 * @ap: Port whose timings we are configuring
242 * @adev: Device whose timings we are configuring
244 * Set DMA mode for device, in host controller PCI config space.
247 * None (inherited from caller).
250 static void artop6210_set_dmamode (struct ata_port *ap, struct ata_device *adev)
253 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
254 int dn = adev->devno + 2 * ap->port_no;
257 if (adev->dma_mode == XFER_MW_DMA_0)
262 /* Load the PIO timing active/recovery bits */
263 artop6210_load_piomode(ap, adev, pio);
265 pci_read_config_byte(pdev, 0x54, &ultra);
266 ultra &= ~(3 << (2 * dn));
268 /* Add ultra DMA bits if in UDMA mode */
269 if (adev->dma_mode >= XFER_UDMA_0) {
270 u8 mode = (adev->dma_mode - XFER_UDMA_0) + 1 - clock;
273 ultra |= (mode << (2 * dn));
275 pci_write_config_byte(pdev, 0x54, ultra);
279 * artop6260_set_dmamode - Initialize host controller PATA PIO timings
280 * @ap: Port whose timings we are configuring
281 * @adev: Device we are configuring
283 * Set DMA mode for device, in host controller PCI config space. The
284 * ARTOP6260 and relatives store the timing data differently.
287 * None (inherited from caller).
290 static void artop6260_set_dmamode (struct ata_port *ap, struct ata_device *adev)
292 unsigned int pio = adev->pio_mode - XFER_PIO_0;
293 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
296 if (adev->dma_mode == XFER_MW_DMA_0)
301 /* Load the PIO timing active/recovery bits */
302 artop6260_load_piomode(ap, adev, pio);
304 /* Add ultra DMA bits if in UDMA mode */
305 pci_read_config_byte(pdev, 0x44 + ap->port_no, &ultra);
306 ultra &= ~(7 << (4 * adev->devno)); /* One nibble per drive */
307 if (adev->dma_mode >= XFER_UDMA_0) {
308 u8 mode = adev->dma_mode - XFER_UDMA_0 + 1 - clock;
311 ultra |= (mode << (4 * adev->devno));
313 pci_write_config_byte(pdev, 0x44 + ap->port_no, ultra);
316 static struct scsi_host_template artop_sht = {
317 ATA_BMDMA_SHT(DRV_NAME),
320 static const struct ata_port_operations artop6210_ops = {
321 .set_piomode = artop6210_set_piomode,
322 .set_dmamode = artop6210_set_dmamode,
323 .mode_filter = ata_pci_default_filter,
325 .tf_load = ata_tf_load,
326 .tf_read = ata_tf_read,
327 .check_status = ata_check_status,
328 .exec_command = ata_exec_command,
329 .dev_select = ata_std_dev_select,
331 .freeze = ata_bmdma_freeze,
332 .thaw = ata_bmdma_thaw,
333 .error_handler = artop6210_error_handler,
334 .post_internal_cmd = ata_bmdma_post_internal_cmd,
335 .cable_detect = ata_cable_40wire,
337 .bmdma_setup = ata_bmdma_setup,
338 .bmdma_start = ata_bmdma_start,
339 .bmdma_stop = ata_bmdma_stop,
340 .bmdma_status = ata_bmdma_status,
341 .qc_prep = ata_qc_prep,
342 .qc_issue = ata_qc_issue_prot,
344 .data_xfer = ata_data_xfer,
346 .irq_handler = ata_interrupt,
347 .irq_clear = ata_bmdma_irq_clear,
348 .irq_on = ata_irq_on,
350 .port_start = ata_sff_port_start,
353 static const struct ata_port_operations artop6260_ops = {
354 .set_piomode = artop6260_set_piomode,
355 .set_dmamode = artop6260_set_dmamode,
356 .mode_filter = ata_pci_default_filter,
358 .tf_load = ata_tf_load,
359 .tf_read = ata_tf_read,
360 .check_status = ata_check_status,
361 .exec_command = ata_exec_command,
362 .dev_select = ata_std_dev_select,
364 .freeze = ata_bmdma_freeze,
365 .thaw = ata_bmdma_thaw,
366 .error_handler = artop6260_error_handler,
367 .post_internal_cmd = ata_bmdma_post_internal_cmd,
368 .cable_detect = artop6260_cable_detect,
370 .bmdma_setup = ata_bmdma_setup,
371 .bmdma_start = ata_bmdma_start,
372 .bmdma_stop = ata_bmdma_stop,
373 .bmdma_status = ata_bmdma_status,
374 .qc_prep = ata_qc_prep,
375 .qc_issue = ata_qc_issue_prot,
376 .data_xfer = ata_data_xfer,
378 .irq_handler = ata_interrupt,
379 .irq_clear = ata_bmdma_irq_clear,
380 .irq_on = ata_irq_on,
382 .port_start = ata_sff_port_start,
387 * artop_init_one - Register ARTOP ATA PCI device with kernel services
388 * @pdev: PCI device to register
389 * @ent: Entry in artop_pci_tbl matching with @pdev
391 * Called from kernel PCI layer.
394 * Inherited from PCI layer (may sleep).
397 * Zero on success, or -ERRNO value.
400 static int artop_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
402 static int printed_version;
403 static const struct ata_port_info info_6210 = {
405 .flags = ATA_FLAG_SLAVE_POSS,
406 .pio_mask = 0x1f, /* pio0-4 */
407 .mwdma_mask = 0x07, /* mwdma0-2 */
408 .udma_mask = ATA_UDMA2,
409 .port_ops = &artop6210_ops,
411 static const struct ata_port_info info_626x = {
413 .flags = ATA_FLAG_SLAVE_POSS,
414 .pio_mask = 0x1f, /* pio0-4 */
415 .mwdma_mask = 0x07, /* mwdma0-2 */
416 .udma_mask = ATA_UDMA4,
417 .port_ops = &artop6260_ops,
419 static const struct ata_port_info info_628x = {
421 .flags = ATA_FLAG_SLAVE_POSS,
422 .pio_mask = 0x1f, /* pio0-4 */
423 .mwdma_mask = 0x07, /* mwdma0-2 */
424 .udma_mask = ATA_UDMA5,
425 .port_ops = &artop6260_ops,
427 static const struct ata_port_info info_628x_fast = {
429 .flags = ATA_FLAG_SLAVE_POSS,
430 .pio_mask = 0x1f, /* pio0-4 */
431 .mwdma_mask = 0x07, /* mwdma0-2 */
432 .udma_mask = ATA_UDMA6,
433 .port_ops = &artop6260_ops,
435 const struct ata_port_info *ppi[] = { NULL, NULL };
438 if (!printed_version++)
439 dev_printk(KERN_DEBUG, &pdev->dev,
440 "version " DRV_VERSION "\n");
442 rc = pcim_enable_device(pdev);
446 if (id->driver_data == 0) { /* 6210 variant */
448 ppi[1] = &ata_dummy_port_info;
449 /* BIOS may have left us in UDMA, clear it before libata probe */
450 pci_write_config_byte(pdev, 0x54, 0);
451 /* For the moment (also lacks dsc) */
452 printk(KERN_WARNING "ARTOP 6210 requires serialize functionality not yet supported by libata.\n");
453 printk(KERN_WARNING "Secondary ATA ports will not be activated.\n");
455 else if (id->driver_data == 1) /* 6260 */
457 else if (id->driver_data == 2) { /* 6280 or 6280 + fast */
458 unsigned long io = pci_resource_start(pdev, 4);
463 ppi[0] = &info_628x_fast;
464 /* Mac systems come up with some registers not set as we
467 /* Clear reset & test bits */
468 pci_read_config_byte(pdev, 0x49, ®);
469 pci_write_config_byte(pdev, 0x49, reg & ~ 0x30);
471 /* PCI latency must be > 0x80 for burst mode, tweak it
474 pci_read_config_byte(pdev, PCI_LATENCY_TIMER, ®);
476 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x90);
478 /* Enable IRQ output and burst mode */
479 pci_read_config_byte(pdev, 0x4a, ®);
480 pci_write_config_byte(pdev, 0x4a, (reg & ~0x01) | 0x80);
484 BUG_ON(ppi[0] == NULL);
486 return ata_pci_init_one(pdev, ppi);
489 static const struct pci_device_id artop_pci_tbl[] = {
490 { PCI_VDEVICE(ARTOP, 0x0005), 0 },
491 { PCI_VDEVICE(ARTOP, 0x0006), 1 },
492 { PCI_VDEVICE(ARTOP, 0x0007), 1 },
493 { PCI_VDEVICE(ARTOP, 0x0008), 2 },
494 { PCI_VDEVICE(ARTOP, 0x0009), 2 },
496 { } /* terminate list */
499 static struct pci_driver artop_pci_driver = {
501 .id_table = artop_pci_tbl,
502 .probe = artop_init_one,
503 .remove = ata_pci_remove_one,
506 static int __init artop_init(void)
508 return pci_register_driver(&artop_pci_driver);
511 static void __exit artop_exit(void)
513 pci_unregister_driver(&artop_pci_driver);
516 module_init(artop_init);
517 module_exit(artop_exit);
519 MODULE_AUTHOR("Alan Cox");
520 MODULE_DESCRIPTION("SCSI low-level driver for ARTOP PATA");
521 MODULE_LICENSE("GPL");
522 MODULE_DEVICE_TABLE(pci, artop_pci_tbl);
523 MODULE_VERSION(DRV_VERSION);