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 .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
,
317 .slave_destroy
= ata_scsi_slave_destroy
,
318 .bios_param
= ata_std_bios_param
,
321 static 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
,
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
,
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
,
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
,
345 .data_xfer
= ata_pio_data_xfer
,
347 .irq_handler
= ata_interrupt
,
348 .irq_clear
= ata_bmdma_irq_clear
,
350 .port_start
= ata_port_start
,
351 .port_stop
= ata_port_stop
,
352 .host_stop
= ata_host_stop
,
355 static 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
,
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
,
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
,
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
,
379 .irq_handler
= ata_interrupt
,
380 .irq_clear
= ata_bmdma_irq_clear
,
382 .port_start
= ata_port_start
,
383 .port_stop
= ata_port_stop
,
384 .host_stop
= ata_host_stop
,
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
393 * Called from kernel PCI layer.
396 * Inherited from PCI layer (may sleep).
399 * Zero on success, or -ERRNO value.
402 static int artop_init_one (struct pci_dev
*pdev
, const struct pci_device_id
*id
)
404 static int printed_version
;
405 static struct ata_port_info info_6210
= {
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
,
413 static struct ata_port_info info_626x
= {
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
,
421 static struct ata_port_info info_626x_fast
= {
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
,
429 struct ata_port_info
*port_info
[2];
430 struct ata_port_info
*info
= NULL
;
433 if (!printed_version
++)
434 dev_printk(KERN_DEBUG
, &pdev
->dev
,
435 "version " DRV_VERSION
"\n");
437 if (id
->driver_data
== 0) { /* 6210 variant */
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");
446 else if (id
->driver_data
== 1) /* 6260 */
448 else if (id
->driver_data
== 2) { /* 6260 or 6260 + fast */
449 unsigned long io
= pci_resource_start(pdev
, 4);
454 info
= &info_626x_fast
;
455 /* Mac systems come up with some registers not set as we
458 /* Clear reset & test bits */
459 pci_read_config_byte(pdev
, 0x49, ®
);
460 pci_write_config_byte(pdev
, 0x49, reg
& ~ 0x30);
462 /* PCI latency must be > 0x80 for burst mode, tweak it
465 pci_read_config_byte(pdev
, PCI_LATENCY_TIMER
, ®
);
467 pci_write_config_byte(pdev
, PCI_LATENCY_TIMER
, 0x90);
469 /* Enable IRQ output and burst mode */
470 pci_read_config_byte(pdev
, 0x4a, ®
);
471 pci_write_config_byte(pdev
, 0x4a, (reg
& ~0x01) | 0x80);
475 BUG_ON(info
== NULL
);
477 port_info
[0] = port_info
[1] = info
;
478 return ata_pci_init_one(pdev
, port_info
, ports
);
481 static const struct pci_device_id artop_pci_tbl
[] = {
482 { 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 },
488 { } /* terminate list */
491 static struct pci_driver artop_pci_driver
= {
493 .id_table
= artop_pci_tbl
,
494 .probe
= artop_init_one
,
495 .remove
= ata_pci_remove_one
,
498 static int __init
artop_init(void)
500 return pci_register_driver(&artop_pci_driver
);
503 static void __exit
artop_exit(void)
505 pci_unregister_driver(&artop_pci_driver
);
508 module_init(artop_init
);
509 module_exit(artop_exit
);
511 MODULE_AUTHOR("Alan Cox");
512 MODULE_DESCRIPTION("SCSI low-level driver for ARTOP PATA");
513 MODULE_LICENSE("GPL");
514 MODULE_DEVICE_TABLE(pci
, artop_pci_tbl
);
515 MODULE_VERSION(DRV_VERSION
);