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
, unsigned long deadline
)
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 return ata_std_prereset(ap
, deadline
);
57 * artop6210_error_handler - Probe specified port on PATA host controller
61 * None (inherited from caller).
64 static void artop6210_error_handler(struct ata_port
*ap
)
66 ata_bmdma_drive_eh(ap
, artop6210_pre_reset
,
67 ata_std_softreset
, NULL
,
72 * artop6260_pre_reset - check for 40/80 pin
74 * @deadline: deadline jiffies for the operation
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
, unsigned long deadline
)
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
);
89 /* Odd numbered device ids are the units with enable bits (the -R cards) */
90 if (pdev
->device
% 1 && !pci_test_config_bits(pdev
, &artop_enable_bits
[ap
->port_no
]))
92 return ata_std_prereset(ap
);
96 * artop6260_cable_detect - identify cable type
99 * Identify the cable type for the ARTOp interface in question
102 static int artop6260_cable_detect(struct ata_port
*ap
)
104 struct pci_dev
*pdev
= to_pci_dev(ap
->host
->dev
);
106 pci_read_config_byte(pdev
, 0x49, &tmp
);
107 if (tmp
& (1 << ap
->port_no
))
108 return ATA_CBL_PATA40
;
109 return ATA_CBL_PATA80
;
113 * artop6260_error_handler - Probe specified port on PATA host controller
117 * None (inherited from caller).
120 static void artop6260_error_handler(struct ata_port
*ap
)
122 ata_bmdma_drive_eh(ap
, artop6260_pre_reset
,
123 ata_std_softreset
, NULL
,
128 * artop6210_load_piomode - Load a set of PATA PIO timings
129 * @ap: Port whose timings we are configuring
133 * Set PIO mode for device, in host controller PCI config space. This
134 * is used both to set PIO timings in PIO mode and also to set the
135 * matching PIO clocking for UDMA, as well as the MWDMA timings.
138 * None (inherited from caller).
141 static void artop6210_load_piomode(struct ata_port
*ap
, struct ata_device
*adev
, unsigned int pio
)
143 struct pci_dev
*pdev
= to_pci_dev(ap
->host
->dev
);
144 int dn
= adev
->devno
+ 2 * ap
->port_no
;
145 const u16 timing
[2][5] = {
146 { 0x0000, 0x000A, 0x0008, 0x0303, 0x0301 },
147 { 0x0700, 0x070A, 0x0708, 0x0403, 0x0401 }
150 /* Load the PIO timing active/recovery bits */
151 pci_write_config_word(pdev
, 0x40 + 2 * dn
, timing
[clock
][pio
]);
155 * artop6210_set_piomode - Initialize host controller PATA PIO timings
156 * @ap: Port whose timings we are configuring
157 * @adev: Device we are configuring
159 * Set PIO mode for device, in host controller PCI config space. For
160 * ARTOP we must also clear the UDMA bits if we are not doing UDMA. In
161 * the event UDMA is used the later call to set_dmamode will set the
165 * None (inherited from caller).
168 static void artop6210_set_piomode(struct ata_port
*ap
, struct ata_device
*adev
)
170 struct pci_dev
*pdev
= to_pci_dev(ap
->host
->dev
);
171 int dn
= adev
->devno
+ 2 * ap
->port_no
;
174 artop6210_load_piomode(ap
, adev
, adev
->pio_mode
- XFER_PIO_0
);
176 /* Clear the UDMA mode bits (set_dmamode will redo this if needed) */
177 pci_read_config_byte(pdev
, 0x54, &ultra
);
178 ultra
&= ~(3 << (2 * dn
));
179 pci_write_config_byte(pdev
, 0x54, ultra
);
183 * artop6260_load_piomode - Initialize host controller PATA PIO timings
184 * @ap: Port whose timings we are configuring
185 * @adev: Device we are configuring
188 * Set PIO mode for device, in host controller PCI config space. The
189 * ARTOP6260 and relatives store the timing data differently.
192 * None (inherited from caller).
195 static void artop6260_load_piomode (struct ata_port
*ap
, struct ata_device
*adev
, unsigned int pio
)
197 struct pci_dev
*pdev
= to_pci_dev(ap
->host
->dev
);
198 int dn
= adev
->devno
+ 2 * ap
->port_no
;
199 const u8 timing
[2][5] = {
200 { 0x00, 0x0A, 0x08, 0x33, 0x31 },
201 { 0x70, 0x7A, 0x78, 0x43, 0x41 }
204 /* Load the PIO timing active/recovery bits */
205 pci_write_config_byte(pdev
, 0x40 + dn
, timing
[clock
][pio
]);
209 * artop6260_set_piomode - Initialize host controller PATA PIO timings
210 * @ap: Port whose timings we are configuring
211 * @adev: Device we are configuring
213 * Set PIO mode for device, in host controller PCI config space. For
214 * ARTOP we must also clear the UDMA bits if we are not doing UDMA. In
215 * the event UDMA is used the later call to set_dmamode will set the
219 * None (inherited from caller).
222 static void artop6260_set_piomode(struct ata_port
*ap
, struct ata_device
*adev
)
224 struct pci_dev
*pdev
= to_pci_dev(ap
->host
->dev
);
227 artop6260_load_piomode(ap
, adev
, adev
->pio_mode
- XFER_PIO_0
);
229 /* Clear the UDMA mode bits (set_dmamode will redo this if needed) */
230 pci_read_config_byte(pdev
, 0x44 + ap
->port_no
, &ultra
);
231 ultra
&= ~(7 << (4 * adev
->devno
)); /* One nibble per drive */
232 pci_write_config_byte(pdev
, 0x44 + ap
->port_no
, ultra
);
236 * artop6210_set_dmamode - Initialize host controller PATA PIO timings
237 * @ap: Port whose timings we are configuring
238 * @adev: Device whose timings we are configuring
240 * Set DMA mode for device, in host controller PCI config space.
243 * None (inherited from caller).
246 static void artop6210_set_dmamode (struct ata_port
*ap
, struct ata_device
*adev
)
249 struct pci_dev
*pdev
= to_pci_dev(ap
->host
->dev
);
250 int dn
= adev
->devno
+ 2 * ap
->port_no
;
253 if (adev
->dma_mode
== XFER_MW_DMA_0
)
258 /* Load the PIO timing active/recovery bits */
259 artop6210_load_piomode(ap
, adev
, pio
);
261 pci_read_config_byte(pdev
, 0x54, &ultra
);
262 ultra
&= ~(3 << (2 * dn
));
264 /* Add ultra DMA bits if in UDMA mode */
265 if (adev
->dma_mode
>= XFER_UDMA_0
) {
266 u8 mode
= (adev
->dma_mode
- XFER_UDMA_0
) + 1 - clock
;
269 ultra
|= (mode
<< (2 * dn
));
271 pci_write_config_byte(pdev
, 0x54, ultra
);
275 * artop6260_set_dmamode - Initialize host controller PATA PIO timings
276 * @ap: Port whose timings we are configuring
277 * @adev: Device we are configuring
279 * Set DMA mode for device, in host controller PCI config space. The
280 * ARTOP6260 and relatives store the timing data differently.
283 * None (inherited from caller).
286 static void artop6260_set_dmamode (struct ata_port
*ap
, struct ata_device
*adev
)
288 unsigned int pio
= adev
->pio_mode
- XFER_PIO_0
;
289 struct pci_dev
*pdev
= to_pci_dev(ap
->host
->dev
);
292 if (adev
->dma_mode
== XFER_MW_DMA_0
)
297 /* Load the PIO timing active/recovery bits */
298 artop6260_load_piomode(ap
, adev
, pio
);
300 /* Add ultra DMA bits if in UDMA mode */
301 pci_read_config_byte(pdev
, 0x44 + ap
->port_no
, &ultra
);
302 ultra
&= ~(7 << (4 * adev
->devno
)); /* One nibble per drive */
303 if (adev
->dma_mode
>= XFER_UDMA_0
) {
304 u8 mode
= adev
->dma_mode
- XFER_UDMA_0
+ 1 - clock
;
307 ultra
|= (mode
<< (4 * adev
->devno
));
309 pci_write_config_byte(pdev
, 0x44 + ap
->port_no
, ultra
);
312 static struct scsi_host_template artop_sht
= {
313 .module
= THIS_MODULE
,
315 .ioctl
= ata_scsi_ioctl
,
316 .queuecommand
= ata_scsi_queuecmd
,
317 .can_queue
= ATA_DEF_QUEUE
,
318 .this_id
= ATA_SHT_THIS_ID
,
319 .sg_tablesize
= LIBATA_MAX_PRD
,
320 .cmd_per_lun
= ATA_SHT_CMD_PER_LUN
,
321 .emulated
= ATA_SHT_EMULATED
,
322 .use_clustering
= ATA_SHT_USE_CLUSTERING
,
323 .proc_name
= DRV_NAME
,
324 .dma_boundary
= ATA_DMA_BOUNDARY
,
325 .slave_configure
= ata_scsi_slave_config
,
326 .slave_destroy
= ata_scsi_slave_destroy
,
327 .bios_param
= ata_std_bios_param
,
330 static const struct ata_port_operations artop6210_ops
= {
331 .port_disable
= ata_port_disable
,
332 .set_piomode
= artop6210_set_piomode
,
333 .set_dmamode
= artop6210_set_dmamode
,
334 .mode_filter
= ata_pci_default_filter
,
336 .tf_load
= ata_tf_load
,
337 .tf_read
= ata_tf_read
,
338 .check_status
= ata_check_status
,
339 .exec_command
= ata_exec_command
,
340 .dev_select
= ata_std_dev_select
,
342 .freeze
= ata_bmdma_freeze
,
343 .thaw
= ata_bmdma_thaw
,
344 .error_handler
= artop6210_error_handler
,
345 .post_internal_cmd
= ata_bmdma_post_internal_cmd
,
346 .cable_detect
= ata_cable_40wire
,
348 .bmdma_setup
= ata_bmdma_setup
,
349 .bmdma_start
= ata_bmdma_start
,
350 .bmdma_stop
= ata_bmdma_stop
,
351 .bmdma_status
= ata_bmdma_status
,
352 .qc_prep
= ata_qc_prep
,
353 .qc_issue
= ata_qc_issue_prot
,
355 .data_xfer
= ata_data_xfer
,
357 .irq_handler
= ata_interrupt
,
358 .irq_clear
= ata_bmdma_irq_clear
,
359 .irq_on
= ata_irq_on
,
360 .irq_ack
= ata_irq_ack
,
362 .port_start
= ata_port_start
,
365 static const struct ata_port_operations artop6260_ops
= {
366 .port_disable
= ata_port_disable
,
367 .set_piomode
= artop6260_set_piomode
,
368 .set_dmamode
= artop6260_set_dmamode
,
370 .tf_load
= ata_tf_load
,
371 .tf_read
= ata_tf_read
,
372 .check_status
= ata_check_status
,
373 .exec_command
= ata_exec_command
,
374 .dev_select
= ata_std_dev_select
,
376 .freeze
= ata_bmdma_freeze
,
377 .thaw
= ata_bmdma_thaw
,
378 .error_handler
= artop6260_error_handler
,
379 .post_internal_cmd
= ata_bmdma_post_internal_cmd
,
380 .cable_detect
= artop6260_cable_detect
,
382 .bmdma_setup
= ata_bmdma_setup
,
383 .bmdma_start
= ata_bmdma_start
,
384 .bmdma_stop
= ata_bmdma_stop
,
385 .bmdma_status
= ata_bmdma_status
,
386 .qc_prep
= ata_qc_prep
,
387 .qc_issue
= ata_qc_issue_prot
,
388 .data_xfer
= ata_data_xfer
,
390 .irq_handler
= ata_interrupt
,
391 .irq_clear
= ata_bmdma_irq_clear
,
392 .irq_on
= ata_irq_on
,
393 .irq_ack
= ata_irq_ack
,
395 .port_start
= ata_port_start
,
400 * artop_init_one - Register ARTOP ATA PCI device with kernel services
401 * @pdev: PCI device to register
402 * @ent: Entry in artop_pci_tbl matching with @pdev
404 * Called from kernel PCI layer.
407 * Inherited from PCI layer (may sleep).
410 * Zero on success, or -ERRNO value.
413 static int artop_init_one (struct pci_dev
*pdev
, const struct pci_device_id
*id
)
415 static int printed_version
;
416 static struct ata_port_info info_6210
= {
418 .flags
= ATA_FLAG_SLAVE_POSS
| ATA_FLAG_SRST
,
419 .pio_mask
= 0x1f, /* pio0-4 */
420 .mwdma_mask
= 0x07, /* mwdma0-2 */
421 .udma_mask
= ATA_UDMA2
,
422 .port_ops
= &artop6210_ops
,
424 static struct ata_port_info info_626x
= {
426 .flags
= ATA_FLAG_SLAVE_POSS
| ATA_FLAG_SRST
,
427 .pio_mask
= 0x1f, /* pio0-4 */
428 .mwdma_mask
= 0x07, /* mwdma0-2 */
429 .udma_mask
= ATA_UDMA4
,
430 .port_ops
= &artop6260_ops
,
432 static struct ata_port_info info_626x_fast
= {
434 .flags
= ATA_FLAG_SLAVE_POSS
| ATA_FLAG_SRST
,
435 .pio_mask
= 0x1f, /* pio0-4 */
436 .mwdma_mask
= 0x07, /* mwdma0-2 */
437 .udma_mask
= ATA_UDMA5
,
438 .port_ops
= &artop6260_ops
,
440 struct ata_port_info
*port_info
[2];
441 struct ata_port_info
*info
= NULL
;
444 if (!printed_version
++)
445 dev_printk(KERN_DEBUG
, &pdev
->dev
,
446 "version " DRV_VERSION
"\n");
448 if (id
->driver_data
== 0) { /* 6210 variant */
450 /* BIOS may have left us in UDMA, clear it before libata probe */
451 pci_write_config_byte(pdev
, 0x54, 0);
452 /* For the moment (also lacks dsc) */
453 printk(KERN_WARNING
"ARTOP 6210 requires serialize functionality not yet supported by libata.\n");
454 printk(KERN_WARNING
"Secondary ATA ports will not be activated.\n");
457 else if (id
->driver_data
== 1) /* 6260 */
459 else if (id
->driver_data
== 2) { /* 6260 or 6260 + fast */
460 unsigned long io
= pci_resource_start(pdev
, 4);
465 info
= &info_626x_fast
;
466 /* Mac systems come up with some registers not set as we
469 /* Clear reset & test bits */
470 pci_read_config_byte(pdev
, 0x49, ®
);
471 pci_write_config_byte(pdev
, 0x49, reg
& ~ 0x30);
473 /* PCI latency must be > 0x80 for burst mode, tweak it
476 pci_read_config_byte(pdev
, PCI_LATENCY_TIMER
, ®
);
478 pci_write_config_byte(pdev
, PCI_LATENCY_TIMER
, 0x90);
480 /* Enable IRQ output and burst mode */
481 pci_read_config_byte(pdev
, 0x4a, ®
);
482 pci_write_config_byte(pdev
, 0x4a, (reg
& ~0x01) | 0x80);
486 BUG_ON(info
== NULL
);
488 port_info
[0] = port_info
[1] = info
;
489 return ata_pci_init_one(pdev
, port_info
, ports
);
492 static const struct pci_device_id artop_pci_tbl
[] = {
493 { PCI_VDEVICE(ARTOP
, 0x0005), 0 },
494 { PCI_VDEVICE(ARTOP
, 0x0006), 1 },
495 { PCI_VDEVICE(ARTOP
, 0x0007), 1 },
496 { PCI_VDEVICE(ARTOP
, 0x0008), 2 },
497 { PCI_VDEVICE(ARTOP
, 0x0009), 2 },
499 { } /* terminate list */
502 static struct pci_driver artop_pci_driver
= {
504 .id_table
= artop_pci_tbl
,
505 .probe
= artop_init_one
,
506 .remove
= ata_pci_remove_one
,
509 static int __init
artop_init(void)
511 return pci_register_driver(&artop_pci_driver
);
514 static void __exit
artop_exit(void)
516 pci_unregister_driver(&artop_pci_driver
);
519 module_init(artop_init
);
520 module_exit(artop_exit
);
522 MODULE_AUTHOR("Alan Cox");
523 MODULE_DESCRIPTION("SCSI low-level driver for ARTOP PATA");
524 MODULE_LICENSE("GPL");
525 MODULE_DEVICE_TABLE(pci
, artop_pci_tbl
);
526 MODULE_VERSION(DRV_VERSION
);