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 "0.4.1"
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 printk(KERN_INFO
"ata%u: port disabled. ignoring.\n", ap
->id
);
55 ap
->cbl
= ATA_CBL_PATA40
;
56 return ata_std_prereset(ap
);
60 * artop6210_error_handler - Probe specified port on PATA host controller
64 * None (inherited from caller).
67 static void artop6210_error_handler(struct ata_port
*ap
)
69 ata_bmdma_drive_eh(ap
, artop6210_pre_reset
,
70 ata_std_softreset
, NULL
,
75 * artop6260_pre_reset - check for 40/80 pin
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_port
*ap
)
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 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
])) {
95 printk(KERN_INFO
"ata%u: port disabled. ignoring.\n", ap
->id
);
98 pci_read_config_byte(pdev
, 0x49, &tmp
);
99 if (tmp
& (1 >> ap
->port_no
))
100 ap
->cbl
= ATA_CBL_PATA40
;
102 ap
->cbl
= ATA_CBL_PATA80
;
103 return ata_std_prereset(ap
);
107 * artop6260_error_handler - Probe specified port on PATA host controller
111 * None (inherited from caller).
114 static void artop6260_error_handler(struct ata_port
*ap
)
116 ata_bmdma_drive_eh(ap
, artop6260_pre_reset
,
117 ata_std_softreset
, NULL
,
122 * artop6210_load_piomode - Load a set of PATA PIO timings
123 * @ap: Port whose timings we are configuring
127 * Set PIO mode for device, in host controller PCI config space. This
128 * is used both to set PIO timings in PIO mode and also to set the
129 * matching PIO clocking for UDMA, as well as the MWDMA timings.
132 * None (inherited from caller).
135 static void artop6210_load_piomode(struct ata_port
*ap
, struct ata_device
*adev
, unsigned int pio
)
137 struct pci_dev
*pdev
= to_pci_dev(ap
->host
->dev
);
138 int dn
= adev
->devno
+ 2 * ap
->port_no
;
139 const u16 timing
[2][5] = {
140 { 0x0000, 0x000A, 0x0008, 0x0303, 0x0301 },
141 { 0x0700, 0x070A, 0x0708, 0x0403, 0x0401 }
144 /* Load the PIO timing active/recovery bits */
145 pci_write_config_word(pdev
, 0x40 + 2 * dn
, timing
[clock
][pio
]);
149 * artop6210_set_piomode - Initialize host controller PATA PIO timings
150 * @ap: Port whose timings we are configuring
151 * @adev: Device we are configuring
153 * Set PIO mode for device, in host controller PCI config space. For
154 * ARTOP we must also clear the UDMA bits if we are not doing UDMA. In
155 * the event UDMA is used the later call to set_dmamode will set the
159 * None (inherited from caller).
162 static void artop6210_set_piomode(struct ata_port
*ap
, struct ata_device
*adev
)
164 struct pci_dev
*pdev
= to_pci_dev(ap
->host
->dev
);
165 int dn
= adev
->devno
+ 2 * ap
->port_no
;
168 artop6210_load_piomode(ap
, adev
, adev
->pio_mode
- XFER_PIO_0
);
170 /* Clear the UDMA mode bits (set_dmamode will redo this if needed) */
171 pci_read_config_byte(pdev
, 0x54, &ultra
);
172 ultra
&= ~(3 << (2 * dn
));
173 pci_write_config_byte(pdev
, 0x54, ultra
);
177 * artop6260_load_piomode - Initialize host controller PATA PIO timings
178 * @ap: Port whose timings we are configuring
179 * @adev: Device we are configuring
182 * Set PIO mode for device, in host controller PCI config space. The
183 * ARTOP6260 and relatives store the timing data differently.
186 * None (inherited from caller).
189 static void artop6260_load_piomode (struct ata_port
*ap
, struct ata_device
*adev
, unsigned int pio
)
191 struct pci_dev
*pdev
= to_pci_dev(ap
->host
->dev
);
192 int dn
= adev
->devno
+ 2 * ap
->port_no
;
193 const u8 timing
[2][5] = {
194 { 0x00, 0x0A, 0x08, 0x33, 0x31 },
195 { 0x70, 0x7A, 0x78, 0x43, 0x41 }
198 /* Load the PIO timing active/recovery bits */
199 pci_write_config_byte(pdev
, 0x40 + dn
, timing
[clock
][pio
]);
203 * artop6260_set_piomode - Initialize host controller PATA PIO timings
204 * @ap: Port whose timings we are configuring
205 * @adev: Device we are configuring
207 * Set PIO mode for device, in host controller PCI config space. For
208 * ARTOP we must also clear the UDMA bits if we are not doing UDMA. In
209 * the event UDMA is used the later call to set_dmamode will set the
213 * None (inherited from caller).
216 static void artop6260_set_piomode(struct ata_port
*ap
, struct ata_device
*adev
)
218 struct pci_dev
*pdev
= to_pci_dev(ap
->host
->dev
);
221 artop6260_load_piomode(ap
, adev
, adev
->pio_mode
- XFER_PIO_0
);
223 /* Clear the UDMA mode bits (set_dmamode will redo this if needed) */
224 pci_read_config_byte(pdev
, 0x44 + ap
->port_no
, &ultra
);
225 ultra
&= ~(7 << (4 * adev
->devno
)); /* One nibble per drive */
226 pci_write_config_byte(pdev
, 0x44 + ap
->port_no
, ultra
);
230 * artop6210_set_dmamode - Initialize host controller PATA PIO timings
231 * @ap: Port whose timings we are configuring
234 * Set DMA mode for device, in host controller PCI config space.
237 * None (inherited from caller).
240 static void artop6210_set_dmamode (struct ata_port
*ap
, struct ata_device
*adev
)
243 struct pci_dev
*pdev
= to_pci_dev(ap
->host
->dev
);
244 int dn
= adev
->devno
+ 2 * ap
->port_no
;
247 if (adev
->dma_mode
== XFER_MW_DMA_0
)
252 /* Load the PIO timing active/recovery bits */
253 artop6210_load_piomode(ap
, adev
, pio
);
255 pci_read_config_byte(pdev
, 0x54, &ultra
);
256 ultra
&= ~(3 << (2 * dn
));
258 /* Add ultra DMA bits if in UDMA mode */
259 if (adev
->dma_mode
>= XFER_UDMA_0
) {
260 u8 mode
= (adev
->dma_mode
- XFER_UDMA_0
) + 1 - clock
;
263 ultra
|= (mode
<< (2 * dn
));
265 pci_write_config_byte(pdev
, 0x54, ultra
);
269 * artop6260_set_dmamode - Initialize host controller PATA PIO timings
270 * @ap: Port whose timings we are configuring
271 * @adev: Device we are configuring
273 * Set DMA mode for device, in host controller PCI config space. The
274 * ARTOP6260 and relatives store the timing data differently.
277 * None (inherited from caller).
280 static void artop6260_set_dmamode (struct ata_port
*ap
, struct ata_device
*adev
)
282 unsigned int pio
= adev
->pio_mode
- XFER_PIO_0
;
283 struct pci_dev
*pdev
= to_pci_dev(ap
->host
->dev
);
286 if (adev
->dma_mode
== XFER_MW_DMA_0
)
291 /* Load the PIO timing active/recovery bits */
292 artop6260_load_piomode(ap
, adev
, pio
);
294 /* Add ultra DMA bits if in UDMA mode */
295 pci_read_config_byte(pdev
, 0x44 + ap
->port_no
, &ultra
);
296 ultra
&= ~(7 << (4 * adev
->devno
)); /* One nibble per drive */
297 if (adev
->dma_mode
>= XFER_UDMA_0
) {
298 u8 mode
= adev
->dma_mode
- XFER_UDMA_0
+ 1 - clock
;
301 ultra
|= (mode
<< (4 * adev
->devno
));
303 pci_write_config_byte(pdev
, 0x44 + ap
->port_no
, ultra
);
306 static struct scsi_host_template artop_sht
= {
307 .module
= THIS_MODULE
,
309 .ioctl
= ata_scsi_ioctl
,
310 .queuecommand
= ata_scsi_queuecmd
,
311 .can_queue
= ATA_DEF_QUEUE
,
312 .this_id
= ATA_SHT_THIS_ID
,
313 .sg_tablesize
= LIBATA_MAX_PRD
,
314 .max_sectors
= ATA_MAX_SECTORS
,
315 .cmd_per_lun
= ATA_SHT_CMD_PER_LUN
,
316 .emulated
= ATA_SHT_EMULATED
,
317 .use_clustering
= ATA_SHT_USE_CLUSTERING
,
318 .proc_name
= DRV_NAME
,
319 .dma_boundary
= ATA_DMA_BOUNDARY
,
320 .slave_configure
= ata_scsi_slave_config
,
321 .bios_param
= ata_std_bios_param
,
324 static const struct ata_port_operations artop6210_ops
= {
325 .port_disable
= ata_port_disable
,
326 .set_piomode
= artop6210_set_piomode
,
327 .set_dmamode
= artop6210_set_dmamode
,
328 .mode_filter
= ata_pci_default_filter
,
330 .tf_load
= ata_tf_load
,
331 .tf_read
= ata_tf_read
,
332 .check_status
= ata_check_status
,
333 .exec_command
= ata_exec_command
,
334 .dev_select
= ata_std_dev_select
,
336 .freeze
= ata_bmdma_freeze
,
337 .thaw
= ata_bmdma_thaw
,
338 .error_handler
= artop6210_error_handler
,
339 .post_internal_cmd
= ata_bmdma_post_internal_cmd
,
341 .bmdma_setup
= ata_bmdma_setup
,
342 .bmdma_start
= ata_bmdma_start
,
343 .bmdma_stop
= ata_bmdma_stop
,
344 .bmdma_status
= ata_bmdma_status
,
345 .qc_prep
= ata_qc_prep
,
346 .qc_issue
= ata_qc_issue_prot
,
347 .eng_timeout
= ata_eng_timeout
,
348 .data_xfer
= ata_pio_data_xfer
,
350 .irq_handler
= ata_interrupt
,
351 .irq_clear
= ata_bmdma_irq_clear
,
353 .port_start
= ata_port_start
,
354 .port_stop
= ata_port_stop
,
355 .host_stop
= ata_host_stop
,
358 static const struct ata_port_operations artop6260_ops
= {
359 .port_disable
= ata_port_disable
,
360 .set_piomode
= artop6260_set_piomode
,
361 .set_dmamode
= artop6260_set_dmamode
,
363 .tf_load
= ata_tf_load
,
364 .tf_read
= ata_tf_read
,
365 .check_status
= ata_check_status
,
366 .exec_command
= ata_exec_command
,
367 .dev_select
= ata_std_dev_select
,
369 .freeze
= ata_bmdma_freeze
,
370 .thaw
= ata_bmdma_thaw
,
371 .error_handler
= artop6260_error_handler
,
372 .post_internal_cmd
= ata_bmdma_post_internal_cmd
,
374 .bmdma_setup
= ata_bmdma_setup
,
375 .bmdma_start
= ata_bmdma_start
,
376 .bmdma_stop
= ata_bmdma_stop
,
377 .bmdma_status
= ata_bmdma_status
,
378 .qc_prep
= ata_qc_prep
,
379 .qc_issue
= ata_qc_issue_prot
,
380 .data_xfer
= ata_pio_data_xfer
,
382 .eng_timeout
= ata_eng_timeout
,
384 .irq_handler
= ata_interrupt
,
385 .irq_clear
= ata_bmdma_irq_clear
,
387 .port_start
= ata_port_start
,
388 .port_stop
= ata_port_stop
,
389 .host_stop
= ata_host_stop
,
394 * artop_init_one - Register ARTOP ATA PCI device with kernel services
395 * @pdev: PCI device to register
396 * @ent: Entry in artop_pci_tbl matching with @pdev
398 * Called from kernel PCI layer.
401 * Inherited from PCI layer (may sleep).
404 * Zero on success, or -ERRNO value.
407 static int artop_init_one (struct pci_dev
*pdev
, const struct pci_device_id
*id
)
409 static int printed_version
;
410 static struct ata_port_info info_6210
= {
412 .flags
= ATA_FLAG_SLAVE_POSS
| ATA_FLAG_SRST
,
413 .pio_mask
= 0x1f, /* pio0-4 */
414 .mwdma_mask
= 0x07, /* mwdma0-2 */
415 .udma_mask
= ATA_UDMA2
,
416 .port_ops
= &artop6210_ops
,
418 static struct ata_port_info info_626x
= {
420 .flags
= ATA_FLAG_SLAVE_POSS
| ATA_FLAG_SRST
,
421 .pio_mask
= 0x1f, /* pio0-4 */
422 .mwdma_mask
= 0x07, /* mwdma0-2 */
423 .udma_mask
= ATA_UDMA4
,
424 .port_ops
= &artop6260_ops
,
426 static struct ata_port_info info_626x_fast
= {
428 .flags
= ATA_FLAG_SLAVE_POSS
| ATA_FLAG_SRST
,
429 .pio_mask
= 0x1f, /* pio0-4 */
430 .mwdma_mask
= 0x07, /* mwdma0-2 */
431 .udma_mask
= ATA_UDMA5
,
432 .port_ops
= &artop6260_ops
,
434 struct ata_port_info
*port_info
[2];
435 struct ata_port_info
*info
;
438 if (!printed_version
++)
439 dev_printk(KERN_DEBUG
, &pdev
->dev
,
440 "version " DRV_VERSION
"\n");
442 if (id
->driver_data
== 0) { /* 6210 variant */
444 /* BIOS may have left us in UDMA, clear it before libata probe */
445 pci_write_config_byte(pdev
, 0x54, 0);
446 /* For the moment (also lacks dsc) */
447 printk(KERN_WARNING
"ARTOP 6210 requires serialize functionality not yet supported by libata.\n");
448 printk(KERN_WARNING
"Secondary ATA ports will not be activated.\n");
451 else if (id
->driver_data
== 1) /* 6260 */
453 else if (id
->driver_data
== 2) { /* 6260 or 6260 + fast */
454 unsigned long io
= pci_resource_start(pdev
, 4);
459 info
= &info_626x_fast
;
460 /* Mac systems come up with some registers not set as we
463 /* Clear reset & test bits */
464 pci_read_config_byte(pdev
, 0x49, ®
);
465 pci_write_config_byte(pdev
, 0x49, reg
& ~ 0x30);
467 /* PCI latency must be > 0x80 for burst mode, tweak it
470 pci_read_config_byte(pdev
, PCI_LATENCY_TIMER
, ®
);
472 pci_write_config_byte(pdev
, PCI_LATENCY_TIMER
, 0x90);
474 /* Enable IRQ output and burst mode */
475 pci_read_config_byte(pdev
, 0x4a, ®
);
476 pci_write_config_byte(pdev
, 0x4a, (reg
& ~0x01) | 0x80);
479 port_info
[0] = port_info
[1] = info
;
480 return ata_pci_init_one(pdev
, port_info
, ports
);
483 static const struct pci_device_id artop_pci_tbl
[] = {
484 { 0x1191, 0x0005, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0},
485 { 0x1191, 0x0006, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 1},
486 { 0x1191, 0x0007, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 1},
487 { 0x1191, 0x0008, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 2},
488 { 0x1191, 0x0009, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 2},
489 { } /* terminate list */
492 static struct pci_driver artop_pci_driver
= {
494 .id_table
= artop_pci_tbl
,
495 .probe
= artop_init_one
,
496 .remove
= ata_pci_remove_one
,
499 static int __init
artop_init(void)
501 return pci_register_driver(&artop_pci_driver
);
504 static void __exit
artop_exit(void)
506 pci_unregister_driver(&artop_pci_driver
);
510 module_init(artop_init
);
511 module_exit(artop_exit
);
513 MODULE_AUTHOR("Alan Cox");
514 MODULE_DESCRIPTION("SCSI low-level driver for ARTOP PATA");
515 MODULE_LICENSE("GPL");
516 MODULE_DEVICE_TABLE(pci
, artop_pci_tbl
);
517 MODULE_VERSION(DRV_VERSION
);