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1da177e4 LT |
1 | /* |
2 | * sata_svw.c - ServerWorks / Apple K2 SATA | |
3 | * | |
4 | * Maintained by: Benjamin Herrenschmidt <benh@kernel.crashing.org> and | |
5 | * Jeff Garzik <jgarzik@pobox.com> | |
6 | * Please ALWAYS copy linux-ide@vger.kernel.org | |
7 | * on emails. | |
8 | * | |
9 | * Copyright 2003 Benjamin Herrenschmidt <benh@kernel.crashing.org> | |
10 | * | |
11 | * Bits from Jeff Garzik, Copyright RedHat, Inc. | |
12 | * | |
13 | * This driver probably works with non-Apple versions of the | |
14 | * Broadcom chipset... | |
15 | * | |
af36d7f0 JG |
16 | * |
17 | * This program is free software; you can redistribute it and/or modify | |
18 | * it under the terms of the GNU General Public License as published by | |
19 | * the Free Software Foundation; either version 2, or (at your option) | |
20 | * any later version. | |
21 | * | |
22 | * This program is distributed in the hope that it will be useful, | |
23 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
25 | * GNU General Public License for more details. | |
26 | * | |
27 | * You should have received a copy of the GNU General Public License | |
28 | * along with this program; see the file COPYING. If not, write to | |
29 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
30 | * | |
31 | * | |
32 | * libata documentation is available via 'make {ps|pdf}docs', | |
33 | * as Documentation/DocBook/libata.* | |
34 | * | |
35 | * Hardware documentation available under NDA. | |
1da177e4 LT |
36 | * |
37 | */ | |
38 | ||
1da177e4 LT |
39 | #include <linux/kernel.h> |
40 | #include <linux/module.h> | |
41 | #include <linux/pci.h> | |
1da177e4 LT |
42 | #include <linux/blkdev.h> |
43 | #include <linux/delay.h> | |
44 | #include <linux/interrupt.h> | |
a9524a76 | 45 | #include <linux/device.h> |
1da177e4 | 46 | #include <scsi/scsi_host.h> |
931506d3 AS |
47 | #include <scsi/scsi_cmnd.h> |
48 | #include <scsi/scsi.h> | |
1da177e4 | 49 | #include <linux/libata.h> |
d610f503 | 50 | #include <linux/of.h> |
1da177e4 LT |
51 | |
52 | #define DRV_NAME "sata_svw" | |
2a3103ce | 53 | #define DRV_VERSION "2.3" |
1da177e4 | 54 | |
55cca65e | 55 | enum { |
4447d351 TH |
56 | /* ap->flags bits */ |
57 | K2_FLAG_SATA_8_PORTS = (1 << 24), | |
58 | K2_FLAG_NO_ATAPI_DMA = (1 << 25), | |
931506d3 | 59 | K2_FLAG_BAR_POS_3 = (1 << 26), |
c10340ac | 60 | |
55cca65e JG |
61 | /* Taskfile registers offsets */ |
62 | K2_SATA_TF_CMD_OFFSET = 0x00, | |
63 | K2_SATA_TF_DATA_OFFSET = 0x00, | |
64 | K2_SATA_TF_ERROR_OFFSET = 0x04, | |
65 | K2_SATA_TF_NSECT_OFFSET = 0x08, | |
66 | K2_SATA_TF_LBAL_OFFSET = 0x0c, | |
67 | K2_SATA_TF_LBAM_OFFSET = 0x10, | |
68 | K2_SATA_TF_LBAH_OFFSET = 0x14, | |
69 | K2_SATA_TF_DEVICE_OFFSET = 0x18, | |
70 | K2_SATA_TF_CMDSTAT_OFFSET = 0x1c, | |
71 | K2_SATA_TF_CTL_OFFSET = 0x20, | |
1da177e4 | 72 | |
55cca65e JG |
73 | /* DMA base */ |
74 | K2_SATA_DMA_CMD_OFFSET = 0x30, | |
1da177e4 | 75 | |
55cca65e JG |
76 | /* SCRs base */ |
77 | K2_SATA_SCR_STATUS_OFFSET = 0x40, | |
78 | K2_SATA_SCR_ERROR_OFFSET = 0x44, | |
79 | K2_SATA_SCR_CONTROL_OFFSET = 0x48, | |
1da177e4 | 80 | |
55cca65e JG |
81 | /* Others */ |
82 | K2_SATA_SICR1_OFFSET = 0x80, | |
83 | K2_SATA_SICR2_OFFSET = 0x84, | |
84 | K2_SATA_SIM_OFFSET = 0x88, | |
1da177e4 | 85 | |
55cca65e JG |
86 | /* Port stride */ |
87 | K2_SATA_PORT_OFFSET = 0x100, | |
c10340ac | 88 | |
931506d3 AS |
89 | chip_svw4 = 0, |
90 | chip_svw8 = 1, | |
91 | chip_svw42 = 2, /* bar 3 */ | |
92 | chip_svw43 = 3, /* bar 5 */ | |
c10340ac JG |
93 | }; |
94 | ||
ac19bff2 JG |
95 | static u8 k2_stat_check_status(struct ata_port *ap); |
96 | ||
1da177e4 | 97 | |
c10340ac JG |
98 | static int k2_sata_check_atapi_dma(struct ata_queued_cmd *qc) |
99 | { | |
931506d3 AS |
100 | u8 cmnd = qc->scsicmd->cmnd[0]; |
101 | ||
c10340ac JG |
102 | if (qc->ap->flags & K2_FLAG_NO_ATAPI_DMA) |
103 | return -1; /* ATAPI DMA not supported */ | |
931506d3 AS |
104 | else { |
105 | switch (cmnd) { | |
106 | case READ_10: | |
107 | case READ_12: | |
108 | case READ_16: | |
109 | case WRITE_10: | |
110 | case WRITE_12: | |
111 | case WRITE_16: | |
112 | return 0; | |
113 | ||
114 | default: | |
115 | return -1; | |
116 | } | |
c10340ac | 117 | |
931506d3 | 118 | } |
c10340ac JG |
119 | } |
120 | ||
82ef04fb TH |
121 | static int k2_sata_scr_read(struct ata_link *link, |
122 | unsigned int sc_reg, u32 *val) | |
1da177e4 LT |
123 | { |
124 | if (sc_reg > SCR_CONTROL) | |
da3dbb17 | 125 | return -EINVAL; |
82ef04fb | 126 | *val = readl(link->ap->ioaddr.scr_addr + (sc_reg * 4)); |
da3dbb17 | 127 | return 0; |
1da177e4 LT |
128 | } |
129 | ||
130 | ||
82ef04fb TH |
131 | static int k2_sata_scr_write(struct ata_link *link, |
132 | unsigned int sc_reg, u32 val) | |
1da177e4 LT |
133 | { |
134 | if (sc_reg > SCR_CONTROL) | |
da3dbb17 | 135 | return -EINVAL; |
82ef04fb | 136 | writel(val, link->ap->ioaddr.scr_addr + (sc_reg * 4)); |
da3dbb17 | 137 | return 0; |
1da177e4 LT |
138 | } |
139 | ||
b03e66a6 DM |
140 | static int k2_sata_softreset(struct ata_link *link, |
141 | unsigned int *class, unsigned long deadline) | |
142 | { | |
143 | u8 dmactl; | |
144 | void __iomem *mmio = link->ap->ioaddr.bmdma_addr; | |
145 | ||
146 | dmactl = readb(mmio + ATA_DMA_CMD); | |
147 | ||
148 | /* Clear the start bit */ | |
149 | if (dmactl & ATA_DMA_START) { | |
150 | dmactl &= ~ATA_DMA_START; | |
151 | writeb(dmactl, mmio + ATA_DMA_CMD); | |
152 | } | |
153 | ||
154 | return ata_sff_softreset(link, class, deadline); | |
155 | } | |
156 | ||
157 | static int k2_sata_hardreset(struct ata_link *link, | |
158 | unsigned int *class, unsigned long deadline) | |
159 | { | |
160 | u8 dmactl; | |
161 | void __iomem *mmio = link->ap->ioaddr.bmdma_addr; | |
162 | ||
163 | dmactl = readb(mmio + ATA_DMA_CMD); | |
164 | ||
165 | /* Clear the start bit */ | |
166 | if (dmactl & ATA_DMA_START) { | |
167 | dmactl &= ~ATA_DMA_START; | |
168 | writeb(dmactl, mmio + ATA_DMA_CMD); | |
169 | } | |
170 | ||
171 | return sata_sff_hardreset(link, class, deadline); | |
172 | } | |
1da177e4 | 173 | |
057ace5e | 174 | static void k2_sata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf) |
1da177e4 LT |
175 | { |
176 | struct ata_ioports *ioaddr = &ap->ioaddr; | |
177 | unsigned int is_addr = tf->flags & ATA_TFLAG_ISADDR; | |
178 | ||
179 | if (tf->ctl != ap->last_ctl) { | |
0d5ff566 | 180 | writeb(tf->ctl, ioaddr->ctl_addr); |
1da177e4 LT |
181 | ap->last_ctl = tf->ctl; |
182 | ata_wait_idle(ap); | |
183 | } | |
184 | if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) { | |
850a9d8a | 185 | writew(tf->feature | (((u16)tf->hob_feature) << 8), |
0d5ff566 | 186 | ioaddr->feature_addr); |
850a9d8a | 187 | writew(tf->nsect | (((u16)tf->hob_nsect) << 8), |
0d5ff566 | 188 | ioaddr->nsect_addr); |
850a9d8a | 189 | writew(tf->lbal | (((u16)tf->hob_lbal) << 8), |
0d5ff566 | 190 | ioaddr->lbal_addr); |
850a9d8a | 191 | writew(tf->lbam | (((u16)tf->hob_lbam) << 8), |
0d5ff566 | 192 | ioaddr->lbam_addr); |
850a9d8a | 193 | writew(tf->lbah | (((u16)tf->hob_lbah) << 8), |
0d5ff566 | 194 | ioaddr->lbah_addr); |
1da177e4 | 195 | } else if (is_addr) { |
0d5ff566 TH |
196 | writew(tf->feature, ioaddr->feature_addr); |
197 | writew(tf->nsect, ioaddr->nsect_addr); | |
198 | writew(tf->lbal, ioaddr->lbal_addr); | |
199 | writew(tf->lbam, ioaddr->lbam_addr); | |
200 | writew(tf->lbah, ioaddr->lbah_addr); | |
1da177e4 LT |
201 | } |
202 | ||
203 | if (tf->flags & ATA_TFLAG_DEVICE) | |
0d5ff566 | 204 | writeb(tf->device, ioaddr->device_addr); |
1da177e4 LT |
205 | |
206 | ata_wait_idle(ap); | |
207 | } | |
208 | ||
209 | ||
210 | static void k2_sata_tf_read(struct ata_port *ap, struct ata_taskfile *tf) | |
211 | { | |
212 | struct ata_ioports *ioaddr = &ap->ioaddr; | |
ac19bff2 | 213 | u16 nsect, lbal, lbam, lbah, feature; |
1da177e4 | 214 | |
ac19bff2 | 215 | tf->command = k2_stat_check_status(ap); |
0d5ff566 TH |
216 | tf->device = readw(ioaddr->device_addr); |
217 | feature = readw(ioaddr->error_addr); | |
218 | nsect = readw(ioaddr->nsect_addr); | |
219 | lbal = readw(ioaddr->lbal_addr); | |
220 | lbam = readw(ioaddr->lbam_addr); | |
221 | lbah = readw(ioaddr->lbah_addr); | |
ac19bff2 JG |
222 | |
223 | tf->feature = feature; | |
224 | tf->nsect = nsect; | |
225 | tf->lbal = lbal; | |
226 | tf->lbam = lbam; | |
227 | tf->lbah = lbah; | |
1da177e4 LT |
228 | |
229 | if (tf->flags & ATA_TFLAG_LBA48) { | |
ac19bff2 | 230 | tf->hob_feature = feature >> 8; |
1da177e4 LT |
231 | tf->hob_nsect = nsect >> 8; |
232 | tf->hob_lbal = lbal >> 8; | |
233 | tf->hob_lbam = lbam >> 8; | |
234 | tf->hob_lbah = lbah >> 8; | |
5796d1c4 | 235 | } |
1da177e4 LT |
236 | } |
237 | ||
238 | /** | |
239 | * k2_bmdma_setup_mmio - Set up PCI IDE BMDMA transaction (MMIO) | |
240 | * @qc: Info associated with this ATA transaction. | |
241 | * | |
242 | * LOCKING: | |
cca3974e | 243 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
244 | */ |
245 | ||
5796d1c4 | 246 | static void k2_bmdma_setup_mmio(struct ata_queued_cmd *qc) |
1da177e4 LT |
247 | { |
248 | struct ata_port *ap = qc->ap; | |
249 | unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE); | |
250 | u8 dmactl; | |
59f99880 JG |
251 | void __iomem *mmio = ap->ioaddr.bmdma_addr; |
252 | ||
1da177e4 LT |
253 | /* load PRD table addr. */ |
254 | mb(); /* make sure PRD table writes are visible to controller */ | |
f60d7011 | 255 | writel(ap->bmdma_prd_dma, mmio + ATA_DMA_TABLE_OFS); |
1da177e4 LT |
256 | |
257 | /* specify data direction, triple-check start bit is clear */ | |
258 | dmactl = readb(mmio + ATA_DMA_CMD); | |
259 | dmactl &= ~(ATA_DMA_WR | ATA_DMA_START); | |
260 | if (!rw) | |
261 | dmactl |= ATA_DMA_WR; | |
262 | writeb(dmactl, mmio + ATA_DMA_CMD); | |
263 | ||
264 | /* issue r/w command if this is not a ATA DMA command*/ | |
265 | if (qc->tf.protocol != ATA_PROT_DMA) | |
5682ed33 | 266 | ap->ops->sff_exec_command(ap, &qc->tf); |
1da177e4 LT |
267 | } |
268 | ||
269 | /** | |
270 | * k2_bmdma_start_mmio - Start a PCI IDE BMDMA transaction (MMIO) | |
271 | * @qc: Info associated with this ATA transaction. | |
272 | * | |
273 | * LOCKING: | |
cca3974e | 274 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
275 | */ |
276 | ||
5796d1c4 | 277 | static void k2_bmdma_start_mmio(struct ata_queued_cmd *qc) |
1da177e4 LT |
278 | { |
279 | struct ata_port *ap = qc->ap; | |
59f99880 | 280 | void __iomem *mmio = ap->ioaddr.bmdma_addr; |
1da177e4 LT |
281 | u8 dmactl; |
282 | ||
283 | /* start host DMA transaction */ | |
284 | dmactl = readb(mmio + ATA_DMA_CMD); | |
285 | writeb(dmactl | ATA_DMA_START, mmio + ATA_DMA_CMD); | |
ec6add99 PM |
286 | /* This works around possible data corruption. |
287 | ||
288 | On certain SATA controllers that can be seen when the r/w | |
289 | command is given to the controller before the host DMA is | |
290 | started. | |
291 | ||
292 | On a Read command, the controller would initiate the | |
293 | command to the drive even before it sees the DMA | |
294 | start. When there are very fast drives connected to the | |
295 | controller, or when the data request hits in the drive | |
296 | cache, there is the possibility that the drive returns a | |
297 | part or all of the requested data to the controller before | |
298 | the DMA start is issued. In this case, the controller | |
299 | would become confused as to what to do with the data. In | |
300 | the worst case when all the data is returned back to the | |
301 | controller, the controller could hang. In other cases it | |
302 | could return partial data returning in data | |
303 | corruption. This problem has been seen in PPC systems and | |
304 | can also appear on an system with very fast disks, where | |
305 | the SATA controller is sitting behind a number of bridges, | |
306 | and hence there is significant latency between the r/w | |
307 | command and the start command. */ | |
308 | /* issue r/w command if the access is to ATA */ | |
1da177e4 | 309 | if (qc->tf.protocol == ATA_PROT_DMA) |
5682ed33 | 310 | ap->ops->sff_exec_command(ap, &qc->tf); |
1da177e4 LT |
311 | } |
312 | ||
8a60a071 | 313 | |
1da177e4 LT |
314 | static u8 k2_stat_check_status(struct ata_port *ap) |
315 | { | |
5796d1c4 | 316 | return readl(ap->ioaddr.status_addr); |
1da177e4 LT |
317 | } |
318 | ||
3f025677 | 319 | static int k2_sata_show_info(struct seq_file *m, struct Scsi_Host *shost) |
1da177e4 LT |
320 | { |
321 | struct ata_port *ap; | |
322 | struct device_node *np; | |
3f025677 | 323 | int index; |
1da177e4 LT |
324 | |
325 | /* Find the ata_port */ | |
35bb94b1 | 326 | ap = ata_shost_to_port(shost); |
1da177e4 LT |
327 | if (ap == NULL) |
328 | return 0; | |
329 | ||
330 | /* Find the OF node for the PCI device proper */ | |
cca3974e | 331 | np = pci_device_to_OF_node(to_pci_dev(ap->host->dev)); |
1da177e4 LT |
332 | if (np == NULL) |
333 | return 0; | |
334 | ||
335 | /* Match it to a port node */ | |
cca3974e | 336 | index = (ap == ap->host->ports[0]) ? 0 : 1; |
1da177e4 | 337 | for (np = np->child; np != NULL; np = np->sibling) { |
40cd3a45 | 338 | const u32 *reg = of_get_property(np, "reg", NULL); |
1da177e4 LT |
339 | if (!reg) |
340 | continue; | |
3f025677 AV |
341 | if (index == *reg) { |
342 | seq_printf(m, "devspec: %s\n", np->full_name); | |
1da177e4 | 343 | break; |
3f025677 | 344 | } |
1da177e4 | 345 | } |
3f025677 | 346 | return 0; |
1da177e4 | 347 | } |
1da177e4 | 348 | |
193515d5 | 349 | static struct scsi_host_template k2_sata_sht = { |
68d1d07b | 350 | ATA_BMDMA_SHT(DRV_NAME), |
3f025677 | 351 | .show_info = k2_sata_show_info, |
1da177e4 LT |
352 | }; |
353 | ||
354 | ||
029cfd6b TH |
355 | static struct ata_port_operations k2_sata_ops = { |
356 | .inherits = &ata_bmdma_port_ops, | |
b03e66a6 DM |
357 | .softreset = k2_sata_softreset, |
358 | .hardreset = k2_sata_hardreset, | |
5682ed33 TH |
359 | .sff_tf_load = k2_sata_tf_load, |
360 | .sff_tf_read = k2_sata_tf_read, | |
361 | .sff_check_status = k2_stat_check_status, | |
c10340ac | 362 | .check_atapi_dma = k2_sata_check_atapi_dma, |
1da177e4 LT |
363 | .bmdma_setup = k2_bmdma_setup_mmio, |
364 | .bmdma_start = k2_bmdma_start_mmio, | |
1da177e4 LT |
365 | .scr_read = k2_sata_scr_read, |
366 | .scr_write = k2_sata_scr_write, | |
1da177e4 LT |
367 | }; |
368 | ||
4447d351 | 369 | static const struct ata_port_info k2_port_info[] = { |
931506d3 | 370 | /* chip_svw4 */ |
4447d351 | 371 | { |
9cbe056f | 372 | .flags = ATA_FLAG_SATA | K2_FLAG_NO_ATAPI_DMA, |
14bdef98 EIB |
373 | .pio_mask = ATA_PIO4, |
374 | .mwdma_mask = ATA_MWDMA2, | |
bf6263a8 | 375 | .udma_mask = ATA_UDMA6, |
4447d351 TH |
376 | .port_ops = &k2_sata_ops, |
377 | }, | |
931506d3 | 378 | /* chip_svw8 */ |
4447d351 | 379 | { |
9cbe056f SS |
380 | .flags = ATA_FLAG_SATA | K2_FLAG_NO_ATAPI_DMA | |
381 | K2_FLAG_SATA_8_PORTS, | |
14bdef98 EIB |
382 | .pio_mask = ATA_PIO4, |
383 | .mwdma_mask = ATA_MWDMA2, | |
bf6263a8 | 384 | .udma_mask = ATA_UDMA6, |
4447d351 TH |
385 | .port_ops = &k2_sata_ops, |
386 | }, | |
931506d3 AS |
387 | /* chip_svw42 */ |
388 | { | |
9cbe056f | 389 | .flags = ATA_FLAG_SATA | K2_FLAG_BAR_POS_3, |
14bdef98 EIB |
390 | .pio_mask = ATA_PIO4, |
391 | .mwdma_mask = ATA_MWDMA2, | |
931506d3 AS |
392 | .udma_mask = ATA_UDMA6, |
393 | .port_ops = &k2_sata_ops, | |
394 | }, | |
395 | /* chip_svw43 */ | |
396 | { | |
9cbe056f | 397 | .flags = ATA_FLAG_SATA, |
14bdef98 EIB |
398 | .pio_mask = ATA_PIO4, |
399 | .mwdma_mask = ATA_MWDMA2, | |
931506d3 AS |
400 | .udma_mask = ATA_UDMA6, |
401 | .port_ops = &k2_sata_ops, | |
402 | }, | |
4447d351 TH |
403 | }; |
404 | ||
0d5ff566 | 405 | static void k2_sata_setup_port(struct ata_ioports *port, void __iomem *base) |
1da177e4 LT |
406 | { |
407 | port->cmd_addr = base + K2_SATA_TF_CMD_OFFSET; | |
408 | port->data_addr = base + K2_SATA_TF_DATA_OFFSET; | |
409 | port->feature_addr = | |
410 | port->error_addr = base + K2_SATA_TF_ERROR_OFFSET; | |
411 | port->nsect_addr = base + K2_SATA_TF_NSECT_OFFSET; | |
412 | port->lbal_addr = base + K2_SATA_TF_LBAL_OFFSET; | |
413 | port->lbam_addr = base + K2_SATA_TF_LBAM_OFFSET; | |
414 | port->lbah_addr = base + K2_SATA_TF_LBAH_OFFSET; | |
415 | port->device_addr = base + K2_SATA_TF_DEVICE_OFFSET; | |
416 | port->command_addr = | |
417 | port->status_addr = base + K2_SATA_TF_CMDSTAT_OFFSET; | |
418 | port->altstatus_addr = | |
419 | port->ctl_addr = base + K2_SATA_TF_CTL_OFFSET; | |
420 | port->bmdma_addr = base + K2_SATA_DMA_CMD_OFFSET; | |
421 | port->scr_addr = base + K2_SATA_SCR_STATUS_OFFSET; | |
422 | } | |
423 | ||
424 | ||
5796d1c4 | 425 | static int k2_sata_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) |
1da177e4 | 426 | { |
4447d351 TH |
427 | const struct ata_port_info *ppi[] = |
428 | { &k2_port_info[ent->driver_data], NULL }; | |
429 | struct ata_host *host; | |
ea6ba10b | 430 | void __iomem *mmio_base; |
931506d3 | 431 | int n_ports, i, rc, bar_pos; |
1da177e4 | 432 | |
06296a1e | 433 | ata_print_version_once(&pdev->dev, DRV_VERSION); |
1da177e4 | 434 | |
4447d351 TH |
435 | /* allocate host */ |
436 | n_ports = 4; | |
437 | if (ppi[0]->flags & K2_FLAG_SATA_8_PORTS) | |
438 | n_ports = 8; | |
439 | ||
440 | host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports); | |
441 | if (!host) | |
442 | return -ENOMEM; | |
443 | ||
931506d3 AS |
444 | bar_pos = 5; |
445 | if (ppi[0]->flags & K2_FLAG_BAR_POS_3) | |
446 | bar_pos = 3; | |
1da177e4 LT |
447 | /* |
448 | * If this driver happens to only be useful on Apple's K2, then | |
449 | * we should check that here as it has a normal Serverworks ID | |
450 | */ | |
24dc5f33 | 451 | rc = pcim_enable_device(pdev); |
1da177e4 LT |
452 | if (rc) |
453 | return rc; | |
4447d351 | 454 | |
1da177e4 LT |
455 | /* |
456 | * Check if we have resources mapped at all (second function may | |
457 | * have been disabled by firmware) | |
458 | */ | |
931506d3 AS |
459 | if (pci_resource_len(pdev, bar_pos) == 0) { |
460 | /* In IDE mode we need to pin the device to ensure that | |
461 | pcim_release does not clear the busmaster bit in config | |
462 | space, clearing causes busmaster DMA to fail on | |
463 | ports 3 & 4 */ | |
464 | pcim_pin_device(pdev); | |
1da177e4 | 465 | return -ENODEV; |
931506d3 | 466 | } |
1da177e4 | 467 | |
0d5ff566 | 468 | /* Request and iomap PCI regions */ |
931506d3 | 469 | rc = pcim_iomap_regions(pdev, 1 << bar_pos, DRV_NAME); |
0d5ff566 | 470 | if (rc == -EBUSY) |
24dc5f33 | 471 | pcim_pin_device(pdev); |
0d5ff566 | 472 | if (rc) |
24dc5f33 | 473 | return rc; |
4447d351 | 474 | host->iomap = pcim_iomap_table(pdev); |
931506d3 | 475 | mmio_base = host->iomap[bar_pos]; |
4447d351 TH |
476 | |
477 | /* different controllers have different number of ports - currently 4 or 8 */ | |
478 | /* All ports are on the same function. Multi-function device is no | |
479 | * longer available. This should not be seen in any system. */ | |
cbcdd875 TH |
480 | for (i = 0; i < host->n_ports; i++) { |
481 | struct ata_port *ap = host->ports[i]; | |
482 | unsigned int offset = i * K2_SATA_PORT_OFFSET; | |
483 | ||
484 | k2_sata_setup_port(&ap->ioaddr, mmio_base + offset); | |
485 | ||
486 | ata_port_pbar_desc(ap, 5, -1, "mmio"); | |
487 | ata_port_pbar_desc(ap, 5, offset, "port"); | |
488 | } | |
1da177e4 | 489 | |
c54c719b | 490 | rc = dma_set_mask(&pdev->dev, ATA_DMA_MASK); |
1da177e4 | 491 | if (rc) |
24dc5f33 | 492 | return rc; |
c54c719b | 493 | rc = dma_set_coherent_mask(&pdev->dev, ATA_DMA_MASK); |
1da177e4 | 494 | if (rc) |
24dc5f33 | 495 | return rc; |
1da177e4 | 496 | |
0d5ff566 TH |
497 | /* Clear a magic bit in SCR1 according to Darwin, those help |
498 | * some funky seagate drives (though so far, those were already | |
499 | * set by the firmware on the machines I had access to) | |
500 | */ | |
501 | writel(readl(mmio_base + K2_SATA_SICR1_OFFSET) & ~0x00040000, | |
502 | mmio_base + K2_SATA_SICR1_OFFSET); | |
503 | ||
504 | /* Clear SATA error & interrupts we don't use */ | |
505 | writel(0xffffffff, mmio_base + K2_SATA_SCR_ERROR_OFFSET); | |
506 | writel(0x0, mmio_base + K2_SATA_SIM_OFFSET); | |
1da177e4 LT |
507 | |
508 | pci_set_master(pdev); | |
c3b28894 | 509 | return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt, |
9363c382 | 510 | IRQF_SHARED, &k2_sata_sht); |
1da177e4 LT |
511 | } |
512 | ||
60bf09a3 NS |
513 | /* 0x240 is device ID for Apple K2 device |
514 | * 0x241 is device ID for Serverworks Frodo4 | |
515 | * 0x242 is device ID for Serverworks Frodo8 | |
516 | * 0x24a is device ID for BCM5785 (aka HT1000) HT southbridge integrated SATA | |
517 | * controller | |
518 | * */ | |
3b7d697d | 519 | static const struct pci_device_id k2_sata_pci_tbl[] = { |
931506d3 | 520 | { PCI_VDEVICE(SERVERWORKS, 0x0240), chip_svw4 }, |
aeb74914 JG |
521 | { PCI_VDEVICE(SERVERWORKS, 0x0241), chip_svw8 }, |
522 | { PCI_VDEVICE(SERVERWORKS, 0x0242), chip_svw4 }, | |
931506d3 AS |
523 | { PCI_VDEVICE(SERVERWORKS, 0x024a), chip_svw4 }, |
524 | { PCI_VDEVICE(SERVERWORKS, 0x024b), chip_svw4 }, | |
525 | { PCI_VDEVICE(SERVERWORKS, 0x0410), chip_svw42 }, | |
526 | { PCI_VDEVICE(SERVERWORKS, 0x0411), chip_svw43 }, | |
2d2744fc | 527 | |
1da177e4 LT |
528 | { } |
529 | }; | |
530 | ||
1da177e4 LT |
531 | static struct pci_driver k2_sata_pci_driver = { |
532 | .name = DRV_NAME, | |
533 | .id_table = k2_sata_pci_tbl, | |
534 | .probe = k2_sata_init_one, | |
535 | .remove = ata_pci_remove_one, | |
536 | }; | |
537 | ||
2fc75da0 | 538 | module_pci_driver(k2_sata_pci_driver); |
1da177e4 | 539 | |
1da177e4 LT |
540 | MODULE_AUTHOR("Benjamin Herrenschmidt"); |
541 | MODULE_DESCRIPTION("low-level driver for K2 SATA controller"); | |
542 | MODULE_LICENSE("GPL"); | |
543 | MODULE_DEVICE_TABLE(pci, k2_sata_pci_tbl); | |
544 | MODULE_VERSION(DRV_VERSION); |