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]))
52 return ata_std_prereset(ap);
56 * artop6210_error_handler - Probe specified port on PATA host controller
60 * None (inherited from caller).
63 static void artop6210_error_handler(struct ata_port *ap)
65 ata_bmdma_drive_eh(ap, artop6210_pre_reset,
66 ata_std_softreset, NULL,
71 * artop6260_pre_reset - check for 40/80 pin
74 * The ARTOP hardware reports the cable detect bits in register 0x49.
75 * Nothing complicated needed here.
78 static int artop6260_pre_reset(struct ata_port *ap)
80 static const struct pci_bits artop_enable_bits[] = {
81 { 0x4AU, 1U, 0x02UL, 0x02UL }, /* port 0 */
82 { 0x4AU, 1U, 0x04UL, 0x04UL }, /* port 1 */
85 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
87 /* Odd numbered device ids are the units with enable bits (the -R cards) */
88 if (pdev->device % 1 && !pci_test_config_bits(pdev, &artop_enable_bits[ap->port_no]))
90 return ata_std_prereset(ap);
94 * artop6260_cable_detect - identify cable type
97 * Identify the cable type for the ARTOp interface in question
100 static int artop6260_cable_detect(struct ata_port *ap)
102 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
104 pci_read_config_byte(pdev, 0x49, &tmp);
105 if (tmp & (1 << ap->port_no))
106 return ATA_CBL_PATA40;
107 return ATA_CBL_PATA80;
111 * artop6260_error_handler - Probe specified port on PATA host controller
115 * None (inherited from caller).
118 static void artop6260_error_handler(struct ata_port *ap)
120 ata_bmdma_drive_eh(ap, artop6260_pre_reset,
121 ata_std_softreset, NULL,
126 * artop6210_load_piomode - Load a set of PATA PIO timings
127 * @ap: Port whose timings we are configuring
131 * Set PIO mode for device, in host controller PCI config space. This
132 * is used both to set PIO timings in PIO mode and also to set the
133 * matching PIO clocking for UDMA, as well as the MWDMA timings.
136 * None (inherited from caller).
139 static void artop6210_load_piomode(struct ata_port *ap, struct ata_device *adev, unsigned int pio)
141 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
142 int dn = adev->devno + 2 * ap->port_no;
143 const u16 timing[2][5] = {
144 { 0x0000, 0x000A, 0x0008, 0x0303, 0x0301 },
145 { 0x0700, 0x070A, 0x0708, 0x0403, 0x0401 }
148 /* Load the PIO timing active/recovery bits */
149 pci_write_config_word(pdev, 0x40 + 2 * dn, timing[clock][pio]);
153 * artop6210_set_piomode - Initialize host controller PATA PIO timings
154 * @ap: Port whose timings we are configuring
155 * @adev: Device we are configuring
157 * Set PIO mode for device, in host controller PCI config space. For
158 * ARTOP we must also clear the UDMA bits if we are not doing UDMA. In
159 * the event UDMA is used the later call to set_dmamode will set the
163 * None (inherited from caller).
166 static void artop6210_set_piomode(struct ata_port *ap, struct ata_device *adev)
168 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
169 int dn = adev->devno + 2 * ap->port_no;
172 artop6210_load_piomode(ap, adev, adev->pio_mode - XFER_PIO_0);
174 /* Clear the UDMA mode bits (set_dmamode will redo this if needed) */
175 pci_read_config_byte(pdev, 0x54, &ultra);
176 ultra &= ~(3 << (2 * dn));
177 pci_write_config_byte(pdev, 0x54, ultra);
181 * artop6260_load_piomode - Initialize host controller PATA PIO timings
182 * @ap: Port whose timings we are configuring
183 * @adev: Device we are configuring
186 * Set PIO mode for device, in host controller PCI config space. The
187 * ARTOP6260 and relatives store the timing data differently.
190 * None (inherited from caller).
193 static void artop6260_load_piomode (struct ata_port *ap, struct ata_device *adev, unsigned int pio)
195 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
196 int dn = adev->devno + 2 * ap->port_no;
197 const u8 timing[2][5] = {
198 { 0x00, 0x0A, 0x08, 0x33, 0x31 },
199 { 0x70, 0x7A, 0x78, 0x43, 0x41 }
202 /* Load the PIO timing active/recovery bits */
203 pci_write_config_byte(pdev, 0x40 + dn, timing[clock][pio]);
207 * artop6260_set_piomode - Initialize host controller PATA PIO timings
208 * @ap: Port whose timings we are configuring
209 * @adev: Device we are configuring
211 * Set PIO mode for device, in host controller PCI config space. For
212 * ARTOP we must also clear the UDMA bits if we are not doing UDMA. In
213 * the event UDMA is used the later call to set_dmamode will set the
217 * None (inherited from caller).
220 static void artop6260_set_piomode(struct ata_port *ap, struct ata_device *adev)
222 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
225 artop6260_load_piomode(ap, adev, adev->pio_mode - XFER_PIO_0);
227 /* Clear the UDMA mode bits (set_dmamode will redo this if needed) */
228 pci_read_config_byte(pdev, 0x44 + ap->port_no, &ultra);
229 ultra &= ~(7 << (4 * adev->devno)); /* One nibble per drive */
230 pci_write_config_byte(pdev, 0x44 + ap->port_no, ultra);
234 * artop6210_set_dmamode - Initialize host controller PATA PIO timings
235 * @ap: Port whose timings we are configuring
236 * @adev: Device whose timings we are configuring
238 * Set DMA mode for device, in host controller PCI config space.
241 * None (inherited from caller).
244 static void artop6210_set_dmamode (struct ata_port *ap, struct ata_device *adev)
247 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
248 int dn = adev->devno + 2 * ap->port_no;
251 if (adev->dma_mode == XFER_MW_DMA_0)
256 /* Load the PIO timing active/recovery bits */
257 artop6210_load_piomode(ap, adev, pio);
259 pci_read_config_byte(pdev, 0x54, &ultra);
260 ultra &= ~(3 << (2 * dn));
262 /* Add ultra DMA bits if in UDMA mode */
263 if (adev->dma_mode >= XFER_UDMA_0) {
264 u8 mode = (adev->dma_mode - XFER_UDMA_0) + 1 - clock;
267 ultra |= (mode << (2 * dn));
269 pci_write_config_byte(pdev, 0x54, ultra);
273 * artop6260_set_dmamode - Initialize host controller PATA PIO timings
274 * @ap: Port whose timings we are configuring
275 * @adev: Device we are configuring
277 * Set DMA mode for device, in host controller PCI config space. The
278 * ARTOP6260 and relatives store the timing data differently.
281 * None (inherited from caller).
284 static void artop6260_set_dmamode (struct ata_port *ap, struct ata_device *adev)
286 unsigned int pio = adev->pio_mode - XFER_PIO_0;
287 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
290 if (adev->dma_mode == XFER_MW_DMA_0)
295 /* Load the PIO timing active/recovery bits */
296 artop6260_load_piomode(ap, adev, pio);
298 /* Add ultra DMA bits if in UDMA mode */
299 pci_read_config_byte(pdev, 0x44 + ap->port_no, &ultra);
300 ultra &= ~(7 << (4 * adev->devno)); /* One nibble per drive */
301 if (adev->dma_mode >= XFER_UDMA_0) {
302 u8 mode = adev->dma_mode - XFER_UDMA_0 + 1 - clock;
305 ultra |= (mode << (4 * adev->devno));
307 pci_write_config_byte(pdev, 0x44 + ap->port_no, ultra);
310 static struct scsi_host_template artop_sht = {
311 .module = THIS_MODULE,
313 .ioctl = ata_scsi_ioctl,
314 .queuecommand = ata_scsi_queuecmd,
315 .can_queue = ATA_DEF_QUEUE,
316 .this_id = ATA_SHT_THIS_ID,
317 .sg_tablesize = LIBATA_MAX_PRD,
318 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
319 .emulated = ATA_SHT_EMULATED,
320 .use_clustering = ATA_SHT_USE_CLUSTERING,
321 .proc_name = DRV_NAME,
322 .dma_boundary = ATA_DMA_BOUNDARY,
323 .slave_configure = ata_scsi_slave_config,
324 .slave_destroy = ata_scsi_slave_destroy,
325 .bios_param = ata_std_bios_param,
328 static const struct ata_port_operations artop6210_ops = {
329 .port_disable = ata_port_disable,
330 .set_piomode = artop6210_set_piomode,
331 .set_dmamode = artop6210_set_dmamode,
332 .mode_filter = ata_pci_default_filter,
334 .tf_load = ata_tf_load,
335 .tf_read = ata_tf_read,
336 .check_status = ata_check_status,
337 .exec_command = ata_exec_command,
338 .dev_select = ata_std_dev_select,
340 .freeze = ata_bmdma_freeze,
341 .thaw = ata_bmdma_thaw,
342 .error_handler = artop6210_error_handler,
343 .post_internal_cmd = ata_bmdma_post_internal_cmd,
344 .cable_detect = ata_cable_40wire,
346 .bmdma_setup = ata_bmdma_setup,
347 .bmdma_start = ata_bmdma_start,
348 .bmdma_stop = ata_bmdma_stop,
349 .bmdma_status = ata_bmdma_status,
350 .qc_prep = ata_qc_prep,
351 .qc_issue = ata_qc_issue_prot,
353 .data_xfer = ata_data_xfer,
355 .irq_handler = ata_interrupt,
356 .irq_clear = ata_bmdma_irq_clear,
357 .irq_on = ata_irq_on,
358 .irq_ack = ata_irq_ack,
360 .port_start = ata_port_start,
363 static const struct ata_port_operations artop6260_ops = {
364 .port_disable = ata_port_disable,
365 .set_piomode = artop6260_set_piomode,
366 .set_dmamode = artop6260_set_dmamode,
368 .tf_load = ata_tf_load,
369 .tf_read = ata_tf_read,
370 .check_status = ata_check_status,
371 .exec_command = ata_exec_command,
372 .dev_select = ata_std_dev_select,
374 .freeze = ata_bmdma_freeze,
375 .thaw = ata_bmdma_thaw,
376 .error_handler = artop6260_error_handler,
377 .post_internal_cmd = ata_bmdma_post_internal_cmd,
378 .cable_detect = artop6260_cable_detect,
380 .bmdma_setup = ata_bmdma_setup,
381 .bmdma_start = ata_bmdma_start,
382 .bmdma_stop = ata_bmdma_stop,
383 .bmdma_status = ata_bmdma_status,
384 .qc_prep = ata_qc_prep,
385 .qc_issue = ata_qc_issue_prot,
386 .data_xfer = ata_data_xfer,
388 .irq_handler = ata_interrupt,
389 .irq_clear = ata_bmdma_irq_clear,
390 .irq_on = ata_irq_on,
391 .irq_ack = ata_irq_ack,
393 .port_start = ata_port_start,
398 * artop_init_one - Register ARTOP ATA PCI device with kernel services
399 * @pdev: PCI device to register
400 * @ent: Entry in artop_pci_tbl matching with @pdev
402 * Called from kernel PCI layer.
405 * Inherited from PCI layer (may sleep).
408 * Zero on success, or -ERRNO value.
411 static int artop_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
413 static int printed_version;
414 static struct ata_port_info info_6210 = {
416 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
417 .pio_mask = 0x1f, /* pio0-4 */
418 .mwdma_mask = 0x07, /* mwdma0-2 */
419 .udma_mask = ATA_UDMA2,
420 .port_ops = &artop6210_ops,
422 static struct ata_port_info info_626x = {
424 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
425 .pio_mask = 0x1f, /* pio0-4 */
426 .mwdma_mask = 0x07, /* mwdma0-2 */
427 .udma_mask = ATA_UDMA4,
428 .port_ops = &artop6260_ops,
430 static struct ata_port_info info_626x_fast = {
432 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
433 .pio_mask = 0x1f, /* pio0-4 */
434 .mwdma_mask = 0x07, /* mwdma0-2 */
435 .udma_mask = ATA_UDMA5,
436 .port_ops = &artop6260_ops,
438 struct ata_port_info *port_info[2];
439 struct ata_port_info *info = NULL;
442 if (!printed_version++)
443 dev_printk(KERN_DEBUG, &pdev->dev,
444 "version " DRV_VERSION "\n");
446 if (id->driver_data == 0) { /* 6210 variant */
448 /* BIOS may have left us in UDMA, clear it before libata probe */
449 pci_write_config_byte(pdev, 0x54, 0);
450 /* For the moment (also lacks dsc) */
451 printk(KERN_WARNING "ARTOP 6210 requires serialize functionality not yet supported by libata.\n");
452 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) { /* 6260 or 6260 + fast */
458 unsigned long io = pci_resource_start(pdev, 4);
463 info = &info_626x_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(info == NULL);
486 port_info[0] = port_info[1] = info;
487 return ata_pci_init_one(pdev, port_info, ports);
490 static const struct pci_device_id artop_pci_tbl[] = {
491 { PCI_VDEVICE(ARTOP, 0x0005), 0 },
492 { PCI_VDEVICE(ARTOP, 0x0006), 1 },
493 { PCI_VDEVICE(ARTOP, 0x0007), 1 },
494 { PCI_VDEVICE(ARTOP, 0x0008), 2 },
495 { PCI_VDEVICE(ARTOP, 0x0009), 2 },
497 { } /* terminate list */
500 static struct pci_driver artop_pci_driver = {
502 .id_table = artop_pci_tbl,
503 .probe = artop_init_one,
504 .remove = ata_pci_remove_one,
507 static int __init artop_init(void)
509 return pci_register_driver(&artop_pci_driver);
512 static void __exit artop_exit(void)
514 pci_unregister_driver(&artop_pci_driver);
517 module_init(artop_init);
518 module_exit(artop_exit);
520 MODULE_AUTHOR("Alan Cox");
521 MODULE_DESCRIPTION("SCSI low-level driver for ARTOP PATA");
522 MODULE_LICENSE("GPL");
523 MODULE_DEVICE_TABLE(pci, artop_pci_tbl);
524 MODULE_VERSION(DRV_VERSION);