blob: 72e41c9f969b3241c1c64622f3b232fdbf0ea642 [file] [log] [blame]
Jeff Garzik669a5db2006-08-29 18:12:40 -04001/*
Jeff Garzika0fcdc02007-03-09 07:24:15 -05002 * pata_serverworks.c - Serverworks PATA for new ATA layer
Jeff Garzik669a5db2006-08-29 18:12:40 -04003 * (C) 2005 Red Hat Inc
Jeff Garzik669a5db2006-08-29 18:12:40 -04004 *
5 * based upon
6 *
7 * serverworks.c
Jeff Garzik85cd7252006-08-31 00:03:49 -04008 *
Jeff Garzik669a5db2006-08-29 18:12:40 -04009 * Copyright (C) 1998-2000 Michel Aubry
10 * Copyright (C) 1998-2000 Andrzej Krzysztofowicz
11 * Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org>
12 * Portions copyright (c) 2001 Sun Microsystems
13 *
14 *
15 * RCC/ServerWorks IDE driver for Linux
16 *
17 * OSB4: `Open South Bridge' IDE Interface (fn 1)
18 * supports UDMA mode 2 (33 MB/s)
19 *
20 * CSB5: `Champion South Bridge' IDE Interface (fn 1)
21 * all revisions support UDMA mode 4 (66 MB/s)
22 * revision A2.0 and up support UDMA mode 5 (100 MB/s)
23 *
24 * *** The CSB5 does not provide ANY register ***
25 * *** to detect 80-conductor cable presence. ***
26 *
27 * CSB6: `Champion South Bridge' IDE Interface (optional: third channel)
28 *
29 * Documentation:
30 * Available under NDA only. Errata info very hard to get.
31 */
32
33#include <linux/kernel.h>
34#include <linux/module.h>
35#include <linux/pci.h>
36#include <linux/init.h>
37#include <linux/blkdev.h>
38#include <linux/delay.h>
39#include <scsi/scsi_host.h>
40#include <linux/libata.h>
41
42#define DRV_NAME "pata_serverworks"
Alan Cox0f069782008-01-19 15:52:56 +000043#define DRV_VERSION "0.4.3"
Jeff Garzik669a5db2006-08-29 18:12:40 -040044
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) */
47
48/* Seagate Barracuda ATA IV Family drives in UDMA mode 5
49 * can overrun their FIFOs when used with the CSB5 */
50
51static const char *csb_bad_ata100[] = {
52 "ST320011A",
53 "ST340016A",
54 "ST360021A",
55 "ST380021A",
56 NULL
57};
58
59/**
60 * dell_cable - Dell serverworks cable detection
61 * @ap: ATA port to do cable detect
62 *
63 * Dell hide the 40/80 pin select for their interfaces in the top two
Jeff Garzik85cd7252006-08-31 00:03:49 -040064 * bits of the subsystem ID.
Jeff Garzik669a5db2006-08-29 18:12:40 -040065 */
Jeff Garzik85cd7252006-08-31 00:03:49 -040066
Jeff Garzik669a5db2006-08-29 18:12:40 -040067static int dell_cable(struct ata_port *ap) {
68 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
Jeff Garzik85cd7252006-08-31 00:03:49 -040069
Jeff Garzik669a5db2006-08-29 18:12:40 -040070 if (pdev->subsystem_device & (1 << (ap->port_no + 14)))
71 return ATA_CBL_PATA80;
72 return ATA_CBL_PATA40;
73}
74
75/**
76 * sun_cable - Sun Cobalt 'Alpine' cable detection
77 * @ap: ATA port to do cable select
78 *
79 * Cobalt CSB5 IDE hides the 40/80pin in the top two bits of the
80 * subsystem ID the same as dell. We could use one function but we may
81 * need to extend the Dell one in future
82 */
Jeff Garzik85cd7252006-08-31 00:03:49 -040083
Jeff Garzik669a5db2006-08-29 18:12:40 -040084static int sun_cable(struct ata_port *ap) {
85 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
Jeff Garzik85cd7252006-08-31 00:03:49 -040086
Jeff Garzik669a5db2006-08-29 18:12:40 -040087 if (pdev->subsystem_device & (1 << (ap->port_no + 14)))
88 return ATA_CBL_PATA80;
89 return ATA_CBL_PATA40;
90}
91
92/**
93 * osb4_cable - OSB4 cable detect
94 * @ap: ATA port to check
95 *
96 * The OSB4 isn't UDMA66 capable so this is easy
97 */
98
99static int osb4_cable(struct ata_port *ap) {
100 return ATA_CBL_PATA40;
101}
102
103/**
Alan Cox0f069782008-01-19 15:52:56 +0000104 * csb_cable - CSB5/6 cable detect
Jeff Garzik669a5db2006-08-29 18:12:40 -0400105 * @ap: ATA port to check
106 *
107 * Serverworks default arrangement is to use the drive side detection
108 * only.
109 */
110
111static int csb_cable(struct ata_port *ap) {
Alan Cox0f069782008-01-19 15:52:56 +0000112 return ATA_CBL_PATA_UNK;
Jeff Garzik669a5db2006-08-29 18:12:40 -0400113}
114
115struct sv_cable_table {
116 int device;
117 int subvendor;
118 int (*cable_detect)(struct ata_port *ap);
119};
120
121/*
122 * Note that we don't copy the old serverworks code because the old
123 * code contains obvious mistakes
124 */
Jeff Garzik85cd7252006-08-31 00:03:49 -0400125
Jeff Garzik669a5db2006-08-29 18:12:40 -0400126static struct sv_cable_table cable_detect[] = {
127 { PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, PCI_VENDOR_ID_DELL, dell_cable },
128 { PCI_DEVICE_ID_SERVERWORKS_CSB6IDE, PCI_VENDOR_ID_DELL, dell_cable },
129 { PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, PCI_VENDOR_ID_SUN, sun_cable },
Alan Cox68d0d7a2006-09-26 22:24:31 +0100130 { PCI_DEVICE_ID_SERVERWORKS_OSB4IDE, PCI_ANY_ID, osb4_cable },
Jeff Garzik669a5db2006-08-29 18:12:40 -0400131 { PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, PCI_ANY_ID, csb_cable },
132 { PCI_DEVICE_ID_SERVERWORKS_CSB6IDE, PCI_ANY_ID, csb_cable },
133 { PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2, PCI_ANY_ID, csb_cable },
134 { PCI_DEVICE_ID_SERVERWORKS_HT1000IDE, PCI_ANY_ID, csb_cable },
135 { }
136};
137
138/**
Jeff Garzika0fcdc02007-03-09 07:24:15 -0500139 * serverworks_cable_detect - cable detection
Jeff Garzik669a5db2006-08-29 18:12:40 -0400140 * @ap: ATA port
Tejun Heod4b2bab2007-02-02 16:50:52 +0900141 * @deadline: deadline jiffies for the operation
Jeff Garzik669a5db2006-08-29 18:12:40 -0400142 *
Jeff Garzik85cd7252006-08-31 00:03:49 -0400143 * Perform cable detection according to the device and subvendor
Jeff Garzik669a5db2006-08-29 18:12:40 -0400144 * identifications
145 */
Jeff Garzik85cd7252006-08-31 00:03:49 -0400146
Tejun Heod4b2bab2007-02-02 16:50:52 +0900147static int serverworks_cable_detect(struct ata_port *ap)
148{
Jeff Garzik669a5db2006-08-29 18:12:40 -0400149 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
150 struct sv_cable_table *cb = cable_detect;
151
152 while(cb->device) {
Jeff Garzik85cd7252006-08-31 00:03:49 -0400153 if (cb->device == pdev->device &&
Jeff Garzik669a5db2006-08-29 18:12:40 -0400154 (cb->subvendor == pdev->subsystem_vendor ||
155 cb->subvendor == PCI_ANY_ID)) {
Jeff Garzika0fcdc02007-03-09 07:24:15 -0500156 return cb->cable_detect(ap);
Jeff Garzik669a5db2006-08-29 18:12:40 -0400157 }
158 cb++;
159 }
160
161 BUG();
162 return -1; /* kill compiler warning */
163}
164
Jeff Garzik669a5db2006-08-29 18:12:40 -0400165/**
166 * serverworks_is_csb - Check for CSB or OSB
167 * @pdev: PCI device to check
168 *
169 * Returns true if the device being checked is known to be a CSB
170 * series device.
171 */
Jeff Garzik85cd7252006-08-31 00:03:49 -0400172
Jeff Garzik669a5db2006-08-29 18:12:40 -0400173static u8 serverworks_is_csb(struct pci_dev *pdev)
174{
175 switch (pdev->device) {
176 case PCI_DEVICE_ID_SERVERWORKS_CSB5IDE:
177 case PCI_DEVICE_ID_SERVERWORKS_CSB6IDE:
178 case PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2:
179 case PCI_DEVICE_ID_SERVERWORKS_HT1000IDE:
180 return 1;
181 default:
182 break;
183 }
184 return 0;
185}
186
187/**
188 * serverworks_osb4_filter - mode selection filter
Jeff Garzik669a5db2006-08-29 18:12:40 -0400189 * @adev: ATA device
Alan Coxa76b62c2007-03-09 09:34:07 -0500190 * @mask: Mask of proposed modes
Jeff Garzik669a5db2006-08-29 18:12:40 -0400191 *
192 * Filter the offered modes for the device to apply controller
193 * specific rules. OSB4 requires no UDMA for disks due to a FIFO
194 * bug we hit.
195 */
Jeff Garzik85cd7252006-08-31 00:03:49 -0400196
Alan Coxa76b62c2007-03-09 09:34:07 -0500197static unsigned long serverworks_osb4_filter(struct ata_device *adev, unsigned long mask)
Jeff Garzik669a5db2006-08-29 18:12:40 -0400198{
199 if (adev->class == ATA_DEV_ATA)
200 mask &= ~ATA_MASK_UDMA;
Tejun Heo9363c382008-04-07 22:47:16 +0900201 return ata_bmdma_mode_filter(adev, mask);
Jeff Garzik669a5db2006-08-29 18:12:40 -0400202}
203
204
205/**
206 * serverworks_csb_filter - mode selection filter
Jeff Garzik669a5db2006-08-29 18:12:40 -0400207 * @adev: ATA device
Alan Coxa76b62c2007-03-09 09:34:07 -0500208 * @mask: Mask of proposed modes
Jeff Garzik669a5db2006-08-29 18:12:40 -0400209 *
210 * Check the blacklist and disable UDMA5 if matched
211 */
212
Alan Coxa76b62c2007-03-09 09:34:07 -0500213static unsigned long serverworks_csb_filter(struct ata_device *adev, unsigned long mask)
Jeff Garzik669a5db2006-08-29 18:12:40 -0400214{
215 const char *p;
Tejun Heo8bfa79f2007-01-02 20:19:40 +0900216 char model_num[ATA_ID_PROD_LEN + 1];
217 int i;
Jeff Garzik669a5db2006-08-29 18:12:40 -0400218
Jeff Garzik85cd7252006-08-31 00:03:49 -0400219 /* Disk, UDMA */
Jeff Garzik669a5db2006-08-29 18:12:40 -0400220 if (adev->class != ATA_DEV_ATA)
Tejun Heo9363c382008-04-07 22:47:16 +0900221 return ata_bmdma_mode_filter(adev, mask);
Jeff Garzik669a5db2006-08-29 18:12:40 -0400222
223 /* Actually do need to check */
Tejun Heo8bfa79f2007-01-02 20:19:40 +0900224 ata_id_c_string(adev->id, model_num, ATA_ID_PROD, sizeof(model_num));
Jeff Garzik85cd7252006-08-31 00:03:49 -0400225
Tejun Heo8bfa79f2007-01-02 20:19:40 +0900226 for (i = 0; (p = csb_bad_ata100[i]) != NULL; i++) {
227 if (!strcmp(p, model_num))
Alan Cox6ddd6862008-02-26 13:35:54 -0800228 mask &= ~(0xE0 << ATA_SHIFT_UDMA);
Jeff Garzik669a5db2006-08-29 18:12:40 -0400229 }
Tejun Heo9363c382008-04-07 22:47:16 +0900230 return ata_bmdma_mode_filter(adev, mask);
Jeff Garzik669a5db2006-08-29 18:12:40 -0400231}
232
Jeff Garzik669a5db2006-08-29 18:12:40 -0400233/**
234 * serverworks_set_piomode - set initial PIO mode data
235 * @ap: ATA interface
236 * @adev: ATA device
237 *
238 * Program the OSB4/CSB5 timing registers for PIO. The PIO register
239 * load is done as a simple lookup.
240 */
241static void serverworks_set_piomode(struct ata_port *ap, struct ata_device *adev)
242{
243 static const u8 pio_mode[] = { 0x5d, 0x47, 0x34, 0x22, 0x20 };
Alan Cox0f069782008-01-19 15:52:56 +0000244 int offset = 1 + 2 * ap->port_no - adev->devno;
Jeff Garzik669a5db2006-08-29 18:12:40 -0400245 int devbits = (2 * ap->port_no + adev->devno) * 4;
246 u16 csb5_pio;
247 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
248 int pio = adev->pio_mode - XFER_PIO_0;
249
250 pci_write_config_byte(pdev, 0x40 + offset, pio_mode[pio]);
Jeff Garzik85cd7252006-08-31 00:03:49 -0400251
Jeff Garzik669a5db2006-08-29 18:12:40 -0400252 /* The OSB4 just requires the timing but the CSB series want the
253 mode number as well */
254 if (serverworks_is_csb(pdev)) {
255 pci_read_config_word(pdev, 0x4A, &csb5_pio);
256 csb5_pio &= ~(0x0F << devbits);
257 pci_write_config_byte(pdev, 0x4A, csb5_pio | (pio << devbits));
258 }
259}
260
261/**
262 * serverworks_set_dmamode - set initial DMA mode data
263 * @ap: ATA interface
264 * @adev: ATA device
265 *
266 * Program the MWDMA/UDMA modes for the serverworks OSB4/CSB5
267 * chipset. The MWDMA mode values are pulled from a lookup table
268 * while the chipset uses mode number for UDMA.
269 */
270
271static void serverworks_set_dmamode(struct ata_port *ap, struct ata_device *adev)
272{
273 static const u8 dma_mode[] = { 0x77, 0x21, 0x20 };
274 int offset = 1 + 2 * ap->port_no - adev->devno;
Alan Cox36beb822007-11-05 15:04:40 +0000275 int devbits = 2 * ap->port_no + adev->devno;
Jeff Garzik669a5db2006-08-29 18:12:40 -0400276 u8 ultra;
277 u8 ultra_cfg;
278 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
279
280 pci_read_config_byte(pdev, 0x54, &ultra_cfg);
Alan Cox36beb822007-11-05 15:04:40 +0000281 pci_read_config_byte(pdev, 0x56 + ap->port_no, &ultra);
282 ultra &= ~(0x0F << (adev->devno * 4));
Jeff Garzik669a5db2006-08-29 18:12:40 -0400283
284 if (adev->dma_mode >= XFER_UDMA_0) {
285 pci_write_config_byte(pdev, 0x44 + offset, 0x20);
286
Jeff Garzik669a5db2006-08-29 18:12:40 -0400287 ultra |= (adev->dma_mode - XFER_UDMA_0)
Alan Cox36beb822007-11-05 15:04:40 +0000288 << (adev->devno * 4);
Jeff Garzik669a5db2006-08-29 18:12:40 -0400289 ultra_cfg |= (1 << devbits);
290 } else {
Jeff Garzik85cd7252006-08-31 00:03:49 -0400291 pci_write_config_byte(pdev, 0x44 + offset,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400292 dma_mode[adev->dma_mode - XFER_MW_DMA_0]);
293 ultra_cfg &= ~(1 << devbits);
294 }
Alan Cox36beb822007-11-05 15:04:40 +0000295 pci_write_config_byte(pdev, 0x56 + ap->port_no, ultra);
Jeff Garzik669a5db2006-08-29 18:12:40 -0400296 pci_write_config_byte(pdev, 0x54, ultra_cfg);
297}
298
299static struct scsi_host_template serverworks_sht = {
Tejun Heo68d1d072008-03-25 12:22:49 +0900300 ATA_BMDMA_SHT(DRV_NAME),
Jeff Garzik669a5db2006-08-29 18:12:40 -0400301};
302
303static struct ata_port_operations serverworks_osb4_port_ops = {
Tejun Heo029cfd62008-03-25 12:22:49 +0900304 .inherits = &ata_bmdma_port_ops,
305 .cable_detect = serverworks_cable_detect,
306 .mode_filter = serverworks_osb4_filter,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400307 .set_piomode = serverworks_set_piomode,
308 .set_dmamode = serverworks_set_dmamode,
Jeff Garzik85cd7252006-08-31 00:03:49 -0400309};
Jeff Garzik669a5db2006-08-29 18:12:40 -0400310
311static struct ata_port_operations serverworks_csb_port_ops = {
Tejun Heo029cfd62008-03-25 12:22:49 +0900312 .inherits = &serverworks_osb4_port_ops,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400313 .mode_filter = serverworks_csb_filter,
Jeff Garzik85cd7252006-08-31 00:03:49 -0400314};
Jeff Garzik669a5db2006-08-29 18:12:40 -0400315
316static int serverworks_fixup_osb4(struct pci_dev *pdev)
317{
318 u32 reg;
319 struct pci_dev *isa_dev = pci_get_device(PCI_VENDOR_ID_SERVERWORKS,
320 PCI_DEVICE_ID_SERVERWORKS_OSB4, NULL);
321 if (isa_dev) {
322 pci_read_config_dword(isa_dev, 0x64, &reg);
323 reg &= ~0x00002000; /* disable 600ns interrupt mask */
324 if (!(reg & 0x00004000))
325 printk(KERN_DEBUG DRV_NAME ": UDMA not BIOS enabled.\n");
326 reg |= 0x00004000; /* enable UDMA/33 support */
327 pci_write_config_dword(isa_dev, 0x64, reg);
328 pci_dev_put(isa_dev);
329 return 0;
330 }
331 printk(KERN_WARNING "ata_serverworks: Unable to find bridge.\n");
332 return -ENODEV;
333}
334
335static int serverworks_fixup_csb(struct pci_dev *pdev)
336{
Jeff Garzik669a5db2006-08-29 18:12:40 -0400337 u8 btr;
Jeff Garzik85cd7252006-08-31 00:03:49 -0400338
Jeff Garzik669a5db2006-08-29 18:12:40 -0400339 /* Third Channel Test */
340 if (!(PCI_FUNC(pdev->devfn) & 1)) {
341 struct pci_dev * findev = NULL;
342 u32 reg4c = 0;
343 findev = pci_get_device(PCI_VENDOR_ID_SERVERWORKS,
344 PCI_DEVICE_ID_SERVERWORKS_CSB5, NULL);
345 if (findev) {
346 pci_read_config_dword(findev, 0x4C, &reg4c);
347 reg4c &= ~0x000007FF;
348 reg4c |= 0x00000040;
349 reg4c |= 0x00000020;
350 pci_write_config_dword(findev, 0x4C, reg4c);
351 pci_dev_put(findev);
352 }
353 } else {
354 struct pci_dev * findev = NULL;
355 u8 reg41 = 0;
356
357 findev = pci_get_device(PCI_VENDOR_ID_SERVERWORKS,
358 PCI_DEVICE_ID_SERVERWORKS_CSB6, NULL);
359 if (findev) {
360 pci_read_config_byte(findev, 0x41, &reg41);
361 reg41 &= ~0x40;
362 pci_write_config_byte(findev, 0x41, reg41);
363 pci_dev_put(findev);
364 }
365 }
366 /* setup the UDMA Control register
367 *
368 * 1. clear bit 6 to enable DMA
369 * 2. enable DMA modes with bits 0-1
370 * 00 : legacy
371 * 01 : udma2
372 * 10 : udma2/udma4
373 * 11 : udma2/udma4/udma5
374 */
375 pci_read_config_byte(pdev, 0x5A, &btr);
376 btr &= ~0x40;
377 if (!(PCI_FUNC(pdev->devfn) & 1))
378 btr |= 0x2;
379 else
Auke Kok44c10132007-06-08 15:46:36 -0700380 btr |= (pdev->revision >= SVWKS_CSB5_REVISION_NEW) ? 0x3 : 0x2;
Jeff Garzik669a5db2006-08-29 18:12:40 -0400381 pci_write_config_byte(pdev, 0x5A, btr);
Jeff Garzik85cd7252006-08-31 00:03:49 -0400382
Jeff Garzik669a5db2006-08-29 18:12:40 -0400383 return btr;
384}
385
386static void serverworks_fixup_ht1000(struct pci_dev *pdev)
387{
388 u8 btr;
389 /* Setup HT1000 SouthBridge Controller - Single Channel Only */
390 pci_read_config_byte(pdev, 0x5A, &btr);
391 btr &= ~0x40;
392 btr |= 0x3;
393 pci_write_config_byte(pdev, 0x5A, btr);
394}
395
396
397static int serverworks_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
398{
Tejun Heo1626aeb2007-05-04 12:43:58 +0200399 static const struct ata_port_info info[4] = {
Jeff Garzik669a5db2006-08-29 18:12:40 -0400400 { /* OSB4 */
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400401 .flags = ATA_FLAG_SLAVE_POSS,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400402 .pio_mask = 0x1f,
403 .mwdma_mask = 0x07,
404 .udma_mask = 0x07,
405 .port_ops = &serverworks_osb4_port_ops
406 }, { /* OSB4 no UDMA */
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400407 .flags = ATA_FLAG_SLAVE_POSS,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400408 .pio_mask = 0x1f,
409 .mwdma_mask = 0x07,
410 .udma_mask = 0x00,
411 .port_ops = &serverworks_osb4_port_ops
412 }, { /* CSB5 */
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400413 .flags = ATA_FLAG_SLAVE_POSS,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400414 .pio_mask = 0x1f,
415 .mwdma_mask = 0x07,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400416 .udma_mask = ATA_UDMA4,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400417 .port_ops = &serverworks_csb_port_ops
418 }, { /* CSB5 - later revisions*/
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400419 .flags = ATA_FLAG_SLAVE_POSS,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400420 .pio_mask = 0x1f,
421 .mwdma_mask = 0x07,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400422 .udma_mask = ATA_UDMA5,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400423 .port_ops = &serverworks_csb_port_ops
424 }
425 };
Tejun Heo1626aeb2007-05-04 12:43:58 +0200426 const struct ata_port_info *ppi[] = { &info[id->driver_data], NULL };
Tejun Heof08048e2008-03-25 12:22:47 +0900427 int rc;
428
429 rc = pcim_enable_device(pdev);
430 if (rc)
431 return rc;
Jeff Garzik85cd7252006-08-31 00:03:49 -0400432
Jeff Garzik669a5db2006-08-29 18:12:40 -0400433 /* Force master latency timer to 64 PCI clocks */
434 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x40);
435
436 /* OSB4 : South Bridge and IDE */
437 if (pdev->device == PCI_DEVICE_ID_SERVERWORKS_OSB4IDE) {
438 /* Select non UDMA capable OSB4 if we can't do fixups */
439 if ( serverworks_fixup_osb4(pdev) < 0)
Tejun Heo1626aeb2007-05-04 12:43:58 +0200440 ppi[0] = &info[1];
Jeff Garzik669a5db2006-08-29 18:12:40 -0400441 }
442 /* setup CSB5/CSB6 : South Bridge and IDE option RAID */
443 else if ((pdev->device == PCI_DEVICE_ID_SERVERWORKS_CSB5IDE) ||
444 (pdev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE) ||
445 (pdev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2)) {
Jeff Garzik85cd7252006-08-31 00:03:49 -0400446
Jeff Garzik669a5db2006-08-29 18:12:40 -0400447 /* If the returned btr is the newer revision then
448 select the right info block */
449 if (serverworks_fixup_csb(pdev) == 3)
Tejun Heo1626aeb2007-05-04 12:43:58 +0200450 ppi[0] = &info[3];
Jeff Garzik85cd7252006-08-31 00:03:49 -0400451
Jeff Garzik669a5db2006-08-29 18:12:40 -0400452 /* Is this the 3rd channel CSB6 IDE ? */
453 if (pdev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2)
Tejun Heo1626aeb2007-05-04 12:43:58 +0200454 ppi[1] = &ata_dummy_port_info;
Jeff Garzik669a5db2006-08-29 18:12:40 -0400455 }
456 /* setup HT1000E */
457 else if (pdev->device == PCI_DEVICE_ID_SERVERWORKS_HT1000IDE)
458 serverworks_fixup_ht1000(pdev);
Jeff Garzik85cd7252006-08-31 00:03:49 -0400459
Jeff Garzik669a5db2006-08-29 18:12:40 -0400460 if (pdev->device == PCI_DEVICE_ID_SERVERWORKS_CSB5IDE)
Tejun Heo9363c382008-04-07 22:47:16 +0900461 ata_pci_bmdma_clear_simplex(pdev);
Jeff Garzik85cd7252006-08-31 00:03:49 -0400462
Tejun Heo9363c382008-04-07 22:47:16 +0900463 return ata_pci_sff_init_one(pdev, ppi, &serverworks_sht, NULL);
Jeff Garzik669a5db2006-08-29 18:12:40 -0400464}
465
Tejun Heo438ac6d2007-03-02 17:31:26 +0900466#ifdef CONFIG_PM
Alan38e0d562006-11-27 16:16:35 +0000467static int serverworks_reinit_one(struct pci_dev *pdev)
468{
Tejun Heof08048e2008-03-25 12:22:47 +0900469 struct ata_host *host = dev_get_drvdata(&pdev->dev);
470 int rc;
471
472 rc = ata_pci_device_do_resume(pdev);
473 if (rc)
474 return rc;
475
Alan38e0d562006-11-27 16:16:35 +0000476 /* Force master latency timer to 64 PCI clocks */
477 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x40);
Jeff Garzikf20b16f2006-12-11 11:14:06 -0500478
Tejun Heof08048e2008-03-25 12:22:47 +0900479 switch (pdev->device) {
Alan38e0d562006-11-27 16:16:35 +0000480 case PCI_DEVICE_ID_SERVERWORKS_OSB4IDE:
481 serverworks_fixup_osb4(pdev);
482 break;
483 case PCI_DEVICE_ID_SERVERWORKS_CSB5IDE:
Tejun Heo9363c382008-04-07 22:47:16 +0900484 ata_pci_bmdma_clear_simplex(pdev);
Alan38e0d562006-11-27 16:16:35 +0000485 /* fall through */
486 case PCI_DEVICE_ID_SERVERWORKS_CSB6IDE:
487 case PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2:
488 serverworks_fixup_csb(pdev);
489 break;
490 case PCI_DEVICE_ID_SERVERWORKS_HT1000IDE:
491 serverworks_fixup_ht1000(pdev);
492 break;
493 }
Tejun Heof08048e2008-03-25 12:22:47 +0900494
495 ata_host_resume(host);
496 return 0;
Alan38e0d562006-11-27 16:16:35 +0000497}
Tejun Heo438ac6d2007-03-02 17:31:26 +0900498#endif
Alan38e0d562006-11-27 16:16:35 +0000499
Jeff Garzik2d2744f2006-09-28 20:21:59 -0400500static const struct pci_device_id serverworks[] = {
501 { PCI_VDEVICE(SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_OSB4IDE), 0},
502 { PCI_VDEVICE(SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE), 2},
503 { PCI_VDEVICE(SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB6IDE), 2},
504 { PCI_VDEVICE(SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2), 2},
505 { PCI_VDEVICE(SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000IDE), 2},
506
507 { },
Jeff Garzik669a5db2006-08-29 18:12:40 -0400508};
509
510static struct pci_driver serverworks_pci_driver = {
511 .name = DRV_NAME,
512 .id_table = serverworks,
513 .probe = serverworks_init_one,
Alan38e0d562006-11-27 16:16:35 +0000514 .remove = ata_pci_remove_one,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900515#ifdef CONFIG_PM
Alan38e0d562006-11-27 16:16:35 +0000516 .suspend = ata_pci_device_suspend,
517 .resume = serverworks_reinit_one,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900518#endif
Jeff Garzik669a5db2006-08-29 18:12:40 -0400519};
520
521static int __init serverworks_init(void)
522{
523 return pci_register_driver(&serverworks_pci_driver);
524}
525
Jeff Garzik669a5db2006-08-29 18:12:40 -0400526static void __exit serverworks_exit(void)
527{
528 pci_unregister_driver(&serverworks_pci_driver);
529}
530
Jeff Garzik669a5db2006-08-29 18:12:40 -0400531MODULE_AUTHOR("Alan Cox");
532MODULE_DESCRIPTION("low-level driver for Serverworks OSB4/CSB5/CSB6");
533MODULE_LICENSE("GPL");
534MODULE_DEVICE_TABLE(pci, serverworks);
535MODULE_VERSION(DRV_VERSION);
536
537module_init(serverworks_init);
538module_exit(serverworks_exit);