2 * linux/drivers/ide/pci/serverworks.c Version 0.22 Jun 27 2007
4 * Copyright (C) 1998-2000 Michel Aubry
5 * Copyright (C) 1998-2000 Andrzej Krzysztofowicz
6 * Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org>
7 * Copyright (C) 2007 Bartlomiej Zolnierkiewicz
8 * Portions copyright (c) 2001 Sun Microsystems
11 * RCC/ServerWorks IDE driver for Linux
13 * OSB4: `Open South Bridge' IDE Interface (fn 1)
14 * supports UDMA mode 2 (33 MB/s)
16 * CSB5: `Champion South Bridge' IDE Interface (fn 1)
17 * all revisions support UDMA mode 4 (66 MB/s)
18 * revision A2.0 and up support UDMA mode 5 (100 MB/s)
20 * *** The CSB5 does not provide ANY register ***
21 * *** to detect 80-conductor cable presence. ***
23 * CSB6: `Champion South Bridge' IDE Interface (optional: third channel)
25 * HT1000: AKA BCM5785 - Hypertransport Southbridge for Opteron systems. IDE
26 * controller same as the CSB6. Single channel ATA100 only.
29 * Available under NDA only. Errata info very hard to get.
33 #include <linux/types.h>
34 #include <linux/module.h>
35 #include <linux/kernel.h>
36 #include <linux/ioport.h>
37 #include <linux/pci.h>
38 #include <linux/hdreg.h>
39 #include <linux/ide.h>
40 #include <linux/init.h>
41 #include <linux/delay.h>
45 #define SVWKS_CSB5_REVISION_NEW 0x92 /* min PCI_REVISION_ID for UDMA5 (A2.0) */
46 #define SVWKS_CSB6_REVISION 0xa0 /* min PCI_REVISION_ID for UDMA4 (A1.0) */
48 /* Seagate Barracuda ATA IV Family drives in UDMA mode 5
49 * can overrun their FIFOs when used with the CSB5 */
50 static const char *svwks_bad_ata100
[] = {
58 static struct pci_dev
*isa_dev
;
60 static int check_in_drive_lists (ide_drive_t
*drive
, const char **list
)
63 if (!strcmp(*list
++, drive
->id
->model
))
68 static u8
svwks_udma_filter(ide_drive_t
*drive
)
70 struct pci_dev
*dev
= HWIF(drive
)->pci_dev
;
73 if (dev
->device
== PCI_DEVICE_ID_SERVERWORKS_HT1000IDE
)
75 if (dev
->device
== PCI_DEVICE_ID_SERVERWORKS_OSB4IDE
) {
78 pci_read_config_dword(isa_dev
, 0x64, ®
);
81 * Don't enable UDMA on disk devices for the moment
83 if(drive
->media
== ide_disk
)
85 /* Check the OSB4 DMA33 enable bit */
86 return ((reg
& 0x00004000) == 0x00004000) ? 0x07 : 0;
87 } else if (dev
->revision
< SVWKS_CSB5_REVISION_NEW
) {
89 } else if (dev
->revision
>= SVWKS_CSB5_REVISION_NEW
) {
91 pci_read_config_byte(dev
, 0x5A, &btr
);
94 /* If someone decides to do UDMA133 on CSB5 the same
95 issue will bite so be inclusive */
96 if (mode
> 2 && check_in_drive_lists(drive
, svwks_bad_ata100
))
100 case 3: mask
= 0x3f; break;
101 case 2: mask
= 0x1f; break;
102 case 1: mask
= 0x07; break;
103 default: mask
= 0x00; break;
106 if (((dev
->device
== PCI_DEVICE_ID_SERVERWORKS_CSB6IDE
) ||
107 (dev
->device
== PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2
)) &&
108 (!(PCI_FUNC(dev
->devfn
) & 1)))
114 static u8
svwks_csb_check (struct pci_dev
*dev
)
116 switch (dev
->device
) {
117 case PCI_DEVICE_ID_SERVERWORKS_CSB5IDE
:
118 case PCI_DEVICE_ID_SERVERWORKS_CSB6IDE
:
119 case PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2
:
120 case PCI_DEVICE_ID_SERVERWORKS_HT1000IDE
:
128 static void svwks_set_pio_mode(ide_drive_t
*drive
, const u8 pio
)
130 static const u8 pio_modes
[] = { 0x5d, 0x47, 0x34, 0x22, 0x20 };
131 static const u8 drive_pci
[] = { 0x41, 0x40, 0x43, 0x42 };
133 struct pci_dev
*dev
= drive
->hwif
->pci_dev
;
135 pci_write_config_byte(dev
, drive_pci
[drive
->dn
], pio_modes
[pio
]);
137 if (svwks_csb_check(dev
)) {
140 pci_read_config_word(dev
, 0x4a, &csb_pio
);
142 csb_pio
&= ~(0x0f << (4 * drive
->dn
));
143 csb_pio
|= (pio
<< (4 * drive
->dn
));
145 pci_write_config_word(dev
, 0x4a, csb_pio
);
149 static void svwks_set_dma_mode(ide_drive_t
*drive
, const u8 speed
)
151 static const u8 udma_modes
[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05 };
152 static const u8 dma_modes
[] = { 0x77, 0x21, 0x20 };
153 static const u8 drive_pci2
[] = { 0x45, 0x44, 0x47, 0x46 };
155 ide_hwif_t
*hwif
= HWIF(drive
);
156 struct pci_dev
*dev
= hwif
->pci_dev
;
157 u8 unit
= (drive
->select
.b
.unit
& 0x01);
159 u8 ultra_enable
= 0, ultra_timing
= 0, dma_timing
= 0;
161 /* If we are about to put a disk into UDMA mode we screwed up.
162 Our code assumes we never _ever_ do this on an OSB4 */
164 if(dev
->device
== PCI_DEVICE_ID_SERVERWORKS_OSB4
&&
165 drive
->media
== ide_disk
&& speed
>= XFER_UDMA_0
)
168 pci_read_config_byte(dev
, (0x56|hwif
->channel
), &ultra_timing
);
169 pci_read_config_byte(dev
, 0x54, &ultra_enable
);
171 ultra_timing
&= ~(0x0F << (4*unit
));
172 ultra_enable
&= ~(0x01 << drive
->dn
);
178 dma_timing
|= dma_modes
[speed
- XFER_MW_DMA_0
];
187 dma_timing
|= dma_modes
[2];
188 ultra_timing
|= ((udma_modes
[speed
- XFER_UDMA_0
]) << (4*unit
));
189 ultra_enable
|= (0x01 << drive
->dn
);
194 pci_write_config_byte(dev
, drive_pci2
[drive
->dn
], dma_timing
);
195 pci_write_config_byte(dev
, (0x56|hwif
->channel
), ultra_timing
);
196 pci_write_config_byte(dev
, 0x54, ultra_enable
);
199 static int svwks_config_drive_xfer_rate (ide_drive_t
*drive
)
201 if (ide_tune_dma(drive
))
204 ide_set_max_pio(drive
);
209 static unsigned int __devinit
init_chipset_svwks (struct pci_dev
*dev
, const char *name
)
214 /* force Master Latency Timer value to 64 PCICLKs */
215 pci_write_config_byte(dev
, PCI_LATENCY_TIMER
, 0x40);
217 /* OSB4 : South Bridge and IDE */
218 if (dev
->device
== PCI_DEVICE_ID_SERVERWORKS_OSB4IDE
) {
219 isa_dev
= pci_get_device(PCI_VENDOR_ID_SERVERWORKS
,
220 PCI_DEVICE_ID_SERVERWORKS_OSB4
, NULL
);
222 pci_read_config_dword(isa_dev
, 0x64, ®
);
223 reg
&= ~0x00002000; /* disable 600ns interrupt mask */
224 if(!(reg
& 0x00004000))
225 printk(KERN_DEBUG
"%s: UDMA not BIOS enabled.\n", name
);
226 reg
|= 0x00004000; /* enable UDMA/33 support */
227 pci_write_config_dword(isa_dev
, 0x64, reg
);
231 /* setup CSB5/CSB6 : South Bridge and IDE option RAID */
232 else if ((dev
->device
== PCI_DEVICE_ID_SERVERWORKS_CSB5IDE
) ||
233 (dev
->device
== PCI_DEVICE_ID_SERVERWORKS_CSB6IDE
) ||
234 (dev
->device
== PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2
)) {
236 /* Third Channel Test */
237 if (!(PCI_FUNC(dev
->devfn
) & 1)) {
238 struct pci_dev
* findev
= NULL
;
240 findev
= pci_get_device(PCI_VENDOR_ID_SERVERWORKS
,
241 PCI_DEVICE_ID_SERVERWORKS_CSB5
, NULL
);
243 pci_read_config_dword(findev
, 0x4C, ®4c
);
244 reg4c
&= ~0x000007FF;
247 pci_write_config_dword(findev
, 0x4C, reg4c
);
250 outb_p(0x06, 0x0c00);
251 dev
->irq
= inb_p(0x0c01);
253 struct pci_dev
* findev
= NULL
;
256 findev
= pci_get_device(PCI_VENDOR_ID_SERVERWORKS
,
257 PCI_DEVICE_ID_SERVERWORKS_CSB6
, NULL
);
259 pci_read_config_byte(findev
, 0x41, ®41
);
261 pci_write_config_byte(findev
, 0x41, reg41
);
265 * This is a device pin issue on CSB6.
266 * Since there will be a future raid mode,
267 * early versions of the chipset require the
268 * interrupt pin to be set, and it is a compatibility
271 if ((dev
->class >> 8) == PCI_CLASS_STORAGE_IDE
)
274 // pci_read_config_dword(dev, 0x40, &pioreg)
275 // pci_write_config_dword(dev, 0x40, 0x99999999);
276 // pci_read_config_dword(dev, 0x44, &dmareg);
277 // pci_write_config_dword(dev, 0x44, 0xFFFFFFFF);
278 /* setup the UDMA Control register
280 * 1. clear bit 6 to enable DMA
281 * 2. enable DMA modes with bits 0-1
285 * 11 : udma2/udma4/udma5
287 pci_read_config_byte(dev
, 0x5A, &btr
);
289 if (!(PCI_FUNC(dev
->devfn
) & 1))
292 btr
|= (dev
->revision
>= SVWKS_CSB5_REVISION_NEW
) ? 0x3 : 0x2;
293 pci_write_config_byte(dev
, 0x5A, btr
);
295 /* Setup HT1000 SouthBridge Controller - Single Channel Only */
296 else if (dev
->device
== PCI_DEVICE_ID_SERVERWORKS_HT1000IDE
) {
297 pci_read_config_byte(dev
, 0x5A, &btr
);
300 pci_write_config_byte(dev
, 0x5A, btr
);
306 static u8 __devinit
ata66_svwks_svwks(ide_hwif_t
*hwif
)
308 return ATA_CBL_PATA80
;
311 /* On Dell PowerEdge servers with a CSB5/CSB6, the top two bits
312 * of the subsystem device ID indicate presence of an 80-pin cable.
313 * Bit 15 clear = secondary IDE channel does not have 80-pin cable.
314 * Bit 15 set = secondary IDE channel has 80-pin cable.
315 * Bit 14 clear = primary IDE channel does not have 80-pin cable.
316 * Bit 14 set = primary IDE channel has 80-pin cable.
318 static u8 __devinit
ata66_svwks_dell(ide_hwif_t
*hwif
)
320 struct pci_dev
*dev
= hwif
->pci_dev
;
321 if (dev
->subsystem_vendor
== PCI_VENDOR_ID_DELL
&&
322 dev
->vendor
== PCI_VENDOR_ID_SERVERWORKS
&&
323 (dev
->device
== PCI_DEVICE_ID_SERVERWORKS_CSB5IDE
||
324 dev
->device
== PCI_DEVICE_ID_SERVERWORKS_CSB6IDE
))
325 return ((1 << (hwif
->channel
+ 14)) &
326 dev
->subsystem_device
) ? ATA_CBL_PATA80
: ATA_CBL_PATA40
;
327 return ATA_CBL_PATA40
;
330 /* Sun Cobalt Alpine hardware avoids the 80-pin cable
331 * detect issue by attaching the drives directly to the board.
332 * This check follows the Dell precedent (how scary is that?!)
334 * WARNING: this only works on Alpine hardware!
336 static u8 __devinit
ata66_svwks_cobalt(ide_hwif_t
*hwif
)
338 struct pci_dev
*dev
= hwif
->pci_dev
;
339 if (dev
->subsystem_vendor
== PCI_VENDOR_ID_SUN
&&
340 dev
->vendor
== PCI_VENDOR_ID_SERVERWORKS
&&
341 dev
->device
== PCI_DEVICE_ID_SERVERWORKS_CSB5IDE
)
342 return ((1 << (hwif
->channel
+ 14)) &
343 dev
->subsystem_device
) ? ATA_CBL_PATA80
: ATA_CBL_PATA40
;
344 return ATA_CBL_PATA40
;
347 static u8 __devinit
ata66_svwks(ide_hwif_t
*hwif
)
349 struct pci_dev
*dev
= hwif
->pci_dev
;
352 if (dev
->subsystem_vendor
== PCI_VENDOR_ID_SERVERWORKS
)
353 return ata66_svwks_svwks (hwif
);
356 if (dev
->subsystem_vendor
== PCI_VENDOR_ID_DELL
)
357 return ata66_svwks_dell (hwif
);
360 if (dev
->subsystem_vendor
== PCI_VENDOR_ID_SUN
)
361 return ata66_svwks_cobalt (hwif
);
363 /* Per Specified Design by OEM, and ASIC Architect */
364 if ((dev
->device
== PCI_DEVICE_ID_SERVERWORKS_CSB6IDE
) ||
365 (dev
->device
== PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2
))
366 return ATA_CBL_PATA80
;
368 return ATA_CBL_PATA40
;
371 static void __devinit
init_hwif_svwks (ide_hwif_t
*hwif
)
374 hwif
->irq
= hwif
->channel
? 15 : 14;
376 hwif
->set_pio_mode
= &svwks_set_pio_mode
;
377 hwif
->set_dma_mode
= &svwks_set_dma_mode
;
378 hwif
->udma_filter
= &svwks_udma_filter
;
382 if (hwif
->pci_dev
->device
!= PCI_DEVICE_ID_SERVERWORKS_OSB4IDE
)
383 hwif
->ultra_mask
= 0x3f;
385 hwif
->mwdma_mask
= 0x07;
389 hwif
->drives
[0].autotune
= 1;
390 hwif
->drives
[1].autotune
= 1;
395 hwif
->ide_dma_check
= &svwks_config_drive_xfer_rate
;
396 if (hwif
->pci_dev
->device
!= PCI_DEVICE_ID_SERVERWORKS_OSB4IDE
) {
397 if (hwif
->cbl
!= ATA_CBL_PATA40_SHORT
)
398 hwif
->cbl
= ata66_svwks(hwif
);
403 hwif
->drives
[0].autodma
= hwif
->drives
[1].autodma
= 1;
406 static int __devinit
init_setup_svwks (struct pci_dev
*dev
, ide_pci_device_t
*d
)
408 return ide_setup_pci_device(dev
, d
);
411 static int __devinit
init_setup_csb6 (struct pci_dev
*dev
, ide_pci_device_t
*d
)
413 if (!(PCI_FUNC(dev
->devfn
) & 1)) {
414 d
->bootable
= NEVER_BOARD
;
415 if (dev
->resource
[0].start
== 0x01f1)
416 d
->bootable
= ON_BOARD
;
419 if ((dev
->device
== PCI_DEVICE_ID_SERVERWORKS_CSB6IDE
||
420 dev
->device
== PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2
) &&
421 (!(PCI_FUNC(dev
->devfn
) & 1)))
422 d
->host_flags
|= IDE_HFLAG_SINGLE
;
424 d
->host_flags
&= ~IDE_HFLAG_SINGLE
;
426 return ide_setup_pci_device(dev
, d
);
429 static ide_pci_device_t serverworks_chipsets
[] __devinitdata
= {
431 .name
= "SvrWks OSB4",
432 .init_setup
= init_setup_svwks
,
433 .init_chipset
= init_chipset_svwks
,
434 .init_hwif
= init_hwif_svwks
,
436 .bootable
= ON_BOARD
,
437 .pio_mask
= ATA_PIO4
,
439 .name
= "SvrWks CSB5",
440 .init_setup
= init_setup_svwks
,
441 .init_chipset
= init_chipset_svwks
,
442 .init_hwif
= init_hwif_svwks
,
444 .bootable
= ON_BOARD
,
445 .pio_mask
= ATA_PIO4
,
447 .name
= "SvrWks CSB6",
448 .init_setup
= init_setup_csb6
,
449 .init_chipset
= init_chipset_svwks
,
450 .init_hwif
= init_hwif_svwks
,
452 .bootable
= ON_BOARD
,
453 .pio_mask
= ATA_PIO4
,
455 .name
= "SvrWks CSB6",
456 .init_setup
= init_setup_csb6
,
457 .init_chipset
= init_chipset_svwks
,
458 .init_hwif
= init_hwif_svwks
,
460 .bootable
= ON_BOARD
,
461 .host_flags
= IDE_HFLAG_SINGLE
,
462 .pio_mask
= ATA_PIO4
,
464 .name
= "SvrWks HT1000",
465 .init_setup
= init_setup_svwks
,
466 .init_chipset
= init_chipset_svwks
,
467 .init_hwif
= init_hwif_svwks
,
469 .bootable
= ON_BOARD
,
470 .host_flags
= IDE_HFLAG_SINGLE
,
471 .pio_mask
= ATA_PIO4
,
476 * svwks_init_one - called when a OSB/CSB is found
477 * @dev: the svwks device
478 * @id: the matching pci id
480 * Called when the PCI registration layer (or the IDE initialization)
481 * finds a device matching our IDE device tables.
484 static int __devinit
svwks_init_one(struct pci_dev
*dev
, const struct pci_device_id
*id
)
486 ide_pci_device_t
*d
= &serverworks_chipsets
[id
->driver_data
];
488 return d
->init_setup(dev
, d
);
491 static struct pci_device_id svwks_pci_tbl
[] = {
492 { PCI_VENDOR_ID_SERVERWORKS
, PCI_DEVICE_ID_SERVERWORKS_OSB4IDE
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0},
493 { PCI_VENDOR_ID_SERVERWORKS
, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 1},
494 { PCI_VENDOR_ID_SERVERWORKS
, PCI_DEVICE_ID_SERVERWORKS_CSB6IDE
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 2},
495 { PCI_VENDOR_ID_SERVERWORKS
, PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 3},
496 { PCI_VENDOR_ID_SERVERWORKS
, PCI_DEVICE_ID_SERVERWORKS_HT1000IDE
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 4},
499 MODULE_DEVICE_TABLE(pci
, svwks_pci_tbl
);
501 static struct pci_driver driver
= {
502 .name
= "Serverworks_IDE",
503 .id_table
= svwks_pci_tbl
,
504 .probe
= svwks_init_one
,
507 static int __init
svwks_ide_init(void)
509 return ide_pci_register_driver(&driver
);
512 module_init(svwks_ide_init
);
514 MODULE_AUTHOR("Michael Aubry. Andrzej Krzysztofowicz, Andre Hedrick");
515 MODULE_DESCRIPTION("PCI driver module for Serverworks OSB4/CSB5/CSB6 IDE");
516 MODULE_LICENSE("GPL");