2 * pata_artop.c - ARTOP ATA controller driver
4 * (C) 2006 Red Hat <alan@redhat.com>
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>
14 * 850 serialization once the core supports it
15 * Investigate no_dsc on 850R
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>
30 #define DRV_NAME "pata_artop"
31 #define DRV_VERSION "0.4.2"
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
42 static int artop6210_pre_reset(struct ata_port *ap)
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 */
50 if (!pci_test_config_bits(pdev, &artop_enable_bits[ap->port_no]))
53 ap->cbl = ATA_CBL_PATA40;
54 return ata_std_prereset(ap);
58 * artop6210_error_handler - Probe specified port on PATA host controller
62 * None (inherited from caller).
65 static void artop6210_error_handler(struct ata_port *ap)
67 ata_bmdma_drive_eh(ap, artop6210_pre_reset,
68 ata_std_softreset, NULL,
73 * artop6260_pre_reset - check for 40/80 pin
76 * The ARTOP hardware reports the cable detect bits in register 0x49.
77 * Nothing complicated needed here.
80 static int artop6260_pre_reset(struct ata_port *ap)
82 static const struct pci_bits artop_enable_bits[] = {
83 { 0x4AU, 1U, 0x02UL, 0x02UL }, /* port 0 */
84 { 0x4AU, 1U, 0x04UL, 0x04UL }, /* port 1 */
87 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
90 /* Odd numbered device ids are the units with enable bits (the -R cards) */
91 if (pdev->device % 1 && !pci_test_config_bits(pdev, &artop_enable_bits[ap->port_no]))
94 pci_read_config_byte(pdev, 0x49, &tmp);
95 if (tmp & (1 << ap->port_no))
96 ap->cbl = ATA_CBL_PATA40;
98 ap->cbl = ATA_CBL_PATA80;
99 return ata_std_prereset(ap);
103 * artop6260_error_handler - Probe specified port on PATA host controller
107 * None (inherited from caller).
110 static void artop6260_error_handler(struct ata_port *ap)
112 ata_bmdma_drive_eh(ap, artop6260_pre_reset,
113 ata_std_softreset, NULL,
118 * artop6210_load_piomode - Load a set of PATA PIO timings
119 * @ap: Port whose timings we are configuring
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.
128 * None (inherited from caller).
131 static void artop6210_load_piomode(struct ata_port *ap, struct ata_device *adev, unsigned int pio)
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 }
140 /* Load the PIO timing active/recovery bits */
141 pci_write_config_word(pdev, 0x40 + 2 * dn, timing[clock][pio]);
145 * artop6210_set_piomode - Initialize host controller PATA PIO timings
146 * @ap: Port whose timings we are configuring
147 * @adev: Device we are configuring
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
155 * None (inherited from caller).
158 static void artop6210_set_piomode(struct ata_port *ap, struct ata_device *adev)
160 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
161 int dn = adev->devno + 2 * ap->port_no;
164 artop6210_load_piomode(ap, adev, adev->pio_mode - XFER_PIO_0);
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);
173 * artop6260_load_piomode - Initialize host controller PATA PIO timings
174 * @ap: Port whose timings we are configuring
175 * @adev: Device we are configuring
178 * Set PIO mode for device, in host controller PCI config space. The
179 * ARTOP6260 and relatives store the timing data differently.
182 * None (inherited from caller).
185 static void artop6260_load_piomode (struct ata_port *ap, struct ata_device *adev, unsigned int pio)
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 }
194 /* Load the PIO timing active/recovery bits */
195 pci_write_config_byte(pdev, 0x40 + dn, timing[clock][pio]);
199 * artop6260_set_piomode - Initialize host controller PATA PIO timings
200 * @ap: Port whose timings we are configuring
201 * @adev: Device we are configuring
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
209 * None (inherited from caller).
212 static void artop6260_set_piomode(struct ata_port *ap, struct ata_device *adev)
214 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
217 artop6260_load_piomode(ap, adev, adev->pio_mode - XFER_PIO_0);
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);
226 * artop6210_set_dmamode - Initialize host controller PATA PIO timings
227 * @ap: Port whose timings we are configuring
230 * Set DMA mode for device, in host controller PCI config space.
233 * None (inherited from caller).
236 static void artop6210_set_dmamode (struct ata_port *ap, struct ata_device *adev)
239 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
240 int dn = adev->devno + 2 * ap->port_no;
243 if (adev->dma_mode == XFER_MW_DMA_0)
248 /* Load the PIO timing active/recovery bits */
249 artop6210_load_piomode(ap, adev, pio);
251 pci_read_config_byte(pdev, 0x54, &ultra);
252 ultra &= ~(3 << (2 * dn));
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;
259 ultra |= (mode << (2 * dn));
261 pci_write_config_byte(pdev, 0x54, ultra);
265 * artop6260_set_dmamode - Initialize host controller PATA PIO timings
266 * @ap: Port whose timings we are configuring
267 * @adev: Device we are configuring
269 * Set DMA mode for device, in host controller PCI config space. The
270 * ARTOP6260 and relatives store the timing data differently.
273 * None (inherited from caller).
276 static void artop6260_set_dmamode (struct ata_port *ap, struct ata_device *adev)
278 unsigned int pio = adev->pio_mode - XFER_PIO_0;
279 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
282 if (adev->dma_mode == XFER_MW_DMA_0)
287 /* Load the PIO timing active/recovery bits */
288 artop6260_load_piomode(ap, adev, pio);
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;
297 ultra |= (mode << (4 * adev->devno));
299 pci_write_config_byte(pdev, 0x44 + ap->port_no, ultra);
302 static struct scsi_host_template artop_sht = {
303 .module = THIS_MODULE,
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 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
311 .emulated = ATA_SHT_EMULATED,
312 .use_clustering = ATA_SHT_USE_CLUSTERING,
313 .proc_name = DRV_NAME,
314 .dma_boundary = ATA_DMA_BOUNDARY,
315 .slave_configure = ata_scsi_slave_config,
316 .slave_destroy = ata_scsi_slave_destroy,
317 .bios_param = ata_std_bios_param,
320 static const struct ata_port_operations artop6210_ops = {
321 .port_disable = ata_port_disable,
322 .set_piomode = artop6210_set_piomode,
323 .set_dmamode = artop6210_set_dmamode,
324 .mode_filter = ata_pci_default_filter,
326 .tf_load = ata_tf_load,
327 .tf_read = ata_tf_read,
328 .check_status = ata_check_status,
329 .exec_command = ata_exec_command,
330 .dev_select = ata_std_dev_select,
332 .freeze = ata_bmdma_freeze,
333 .thaw = ata_bmdma_thaw,
334 .error_handler = artop6210_error_handler,
335 .post_internal_cmd = ata_bmdma_post_internal_cmd,
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_pio_data_xfer,
346 .irq_handler = ata_interrupt,
347 .irq_clear = ata_bmdma_irq_clear,
349 .port_start = ata_port_start,
350 .port_stop = ata_port_stop,
351 .host_stop = ata_host_stop,
354 static const struct ata_port_operations artop6260_ops = {
355 .port_disable = ata_port_disable,
356 .set_piomode = artop6260_set_piomode,
357 .set_dmamode = artop6260_set_dmamode,
359 .tf_load = ata_tf_load,
360 .tf_read = ata_tf_read,
361 .check_status = ata_check_status,
362 .exec_command = ata_exec_command,
363 .dev_select = ata_std_dev_select,
365 .freeze = ata_bmdma_freeze,
366 .thaw = ata_bmdma_thaw,
367 .error_handler = artop6260_error_handler,
368 .post_internal_cmd = ata_bmdma_post_internal_cmd,
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_pio_data_xfer,
378 .irq_handler = ata_interrupt,
379 .irq_clear = ata_bmdma_irq_clear,
381 .port_start = ata_port_start,
382 .port_stop = ata_port_stop,
383 .host_stop = ata_host_stop,
388 * artop_init_one - Register ARTOP ATA PCI device with kernel services
389 * @pdev: PCI device to register
390 * @ent: Entry in artop_pci_tbl matching with @pdev
392 * Called from kernel PCI layer.
395 * Inherited from PCI layer (may sleep).
398 * Zero on success, or -ERRNO value.
401 static int artop_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
403 static int printed_version;
404 static struct ata_port_info info_6210 = {
406 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
407 .pio_mask = 0x1f, /* pio0-4 */
408 .mwdma_mask = 0x07, /* mwdma0-2 */
409 .udma_mask = ATA_UDMA2,
410 .port_ops = &artop6210_ops,
412 static struct ata_port_info info_626x = {
414 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
415 .pio_mask = 0x1f, /* pio0-4 */
416 .mwdma_mask = 0x07, /* mwdma0-2 */
417 .udma_mask = ATA_UDMA4,
418 .port_ops = &artop6260_ops,
420 static struct ata_port_info info_626x_fast = {
422 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
423 .pio_mask = 0x1f, /* pio0-4 */
424 .mwdma_mask = 0x07, /* mwdma0-2 */
425 .udma_mask = ATA_UDMA5,
426 .port_ops = &artop6260_ops,
428 struct ata_port_info *port_info[2];
429 struct ata_port_info *info = NULL;
432 if (!printed_version++)
433 dev_printk(KERN_DEBUG, &pdev->dev,
434 "version " DRV_VERSION "\n");
436 if (id->driver_data == 0) { /* 6210 variant */
438 /* BIOS may have left us in UDMA, clear it before libata probe */
439 pci_write_config_byte(pdev, 0x54, 0);
440 /* For the moment (also lacks dsc) */
441 printk(KERN_WARNING "ARTOP 6210 requires serialize functionality not yet supported by libata.\n");
442 printk(KERN_WARNING "Secondary ATA ports will not be activated.\n");
445 else if (id->driver_data == 1) /* 6260 */
447 else if (id->driver_data == 2) { /* 6260 or 6260 + fast */
448 unsigned long io = pci_resource_start(pdev, 4);
453 info = &info_626x_fast;
454 /* Mac systems come up with some registers not set as we
457 /* Clear reset & test bits */
458 pci_read_config_byte(pdev, 0x49, ®);
459 pci_write_config_byte(pdev, 0x49, reg & ~ 0x30);
461 /* PCI latency must be > 0x80 for burst mode, tweak it
464 pci_read_config_byte(pdev, PCI_LATENCY_TIMER, ®);
466 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x90);
468 /* Enable IRQ output and burst mode */
469 pci_read_config_byte(pdev, 0x4a, ®);
470 pci_write_config_byte(pdev, 0x4a, (reg & ~0x01) | 0x80);
474 BUG_ON(info == NULL);
476 port_info[0] = port_info[1] = info;
477 return ata_pci_init_one(pdev, port_info, ports);
480 static const struct pci_device_id artop_pci_tbl[] = {
481 { PCI_VDEVICE(ARTOP, 0x0005), 0 },
482 { PCI_VDEVICE(ARTOP, 0x0006), 1 },
483 { PCI_VDEVICE(ARTOP, 0x0007), 1 },
484 { PCI_VDEVICE(ARTOP, 0x0008), 2 },
485 { PCI_VDEVICE(ARTOP, 0x0009), 2 },
487 { } /* terminate list */
490 static struct pci_driver artop_pci_driver = {
492 .id_table = artop_pci_tbl,
493 .probe = artop_init_one,
494 .remove = ata_pci_remove_one,
497 static int __init artop_init(void)
499 return pci_register_driver(&artop_pci_driver);
502 static void __exit artop_exit(void)
504 pci_unregister_driver(&artop_pci_driver);
507 module_init(artop_init);
508 module_exit(artop_exit);
510 MODULE_AUTHOR("Alan Cox");
511 MODULE_DESCRIPTION("SCSI low-level driver for ARTOP PATA");
512 MODULE_LICENSE("GPL");
513 MODULE_DEVICE_TABLE(pci, artop_pci_tbl);
514 MODULE_VERSION(DRV_VERSION);