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1da177e4 LT |
1 | /* |
2 | * sata_promise.c - Promise SATA | |
3 | * | |
4 | * Maintained by: Jeff Garzik <jgarzik@pobox.com> | |
5595ddf9 | 5 | * Mikael Pettersson <mikpe@it.uu.se> |
1da177e4 LT |
6 | * Please ALWAYS copy linux-ide@vger.kernel.org |
7 | * on emails. | |
8 | * | |
9 | * Copyright 2003-2004 Red Hat, Inc. | |
10 | * | |
1da177e4 | 11 | * |
af36d7f0 JG |
12 | * This program is free software; you can redistribute it and/or modify |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2, or (at your option) | |
15 | * any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; see the file COPYING. If not, write to | |
24 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
25 | * | |
26 | * | |
27 | * libata documentation is available via 'make {ps|pdf}docs', | |
28 | * as Documentation/DocBook/libata.* | |
29 | * | |
30 | * Hardware information only available under NDA. | |
1da177e4 LT |
31 | * |
32 | */ | |
33 | ||
34 | #include <linux/kernel.h> | |
35 | #include <linux/module.h> | |
36 | #include <linux/pci.h> | |
37 | #include <linux/init.h> | |
38 | #include <linux/blkdev.h> | |
39 | #include <linux/delay.h> | |
40 | #include <linux/interrupt.h> | |
a9524a76 | 41 | #include <linux/device.h> |
95006188 | 42 | #include <scsi/scsi.h> |
1da177e4 | 43 | #include <scsi/scsi_host.h> |
193515d5 | 44 | #include <scsi/scsi_cmnd.h> |
1da177e4 | 45 | #include <linux/libata.h> |
1da177e4 LT |
46 | #include "sata_promise.h" |
47 | ||
48 | #define DRV_NAME "sata_promise" | |
c07a9c49 | 49 | #define DRV_VERSION "2.12" |
1da177e4 LT |
50 | |
51 | enum { | |
eca25dca | 52 | PDC_MAX_PORTS = 4, |
0d5ff566 | 53 | PDC_MMIO_BAR = 3, |
b9ccd4a9 | 54 | PDC_MAX_PRD = LIBATA_MAX_PRD - 1, /* -1 for ASIC PRD bug workaround */ |
0d5ff566 | 55 | |
821d22cd MP |
56 | /* host register offsets (from host->iomap[PDC_MMIO_BAR]) */ |
57 | PDC_INT_SEQMASK = 0x40, /* Mask of asserted SEQ INTs */ | |
58 | PDC_FLASH_CTL = 0x44, /* Flash control register */ | |
59 | PDC_SATA_PLUG_CSR = 0x6C, /* SATA Plug control/status reg */ | |
60 | PDC2_SATA_PLUG_CSR = 0x60, /* SATAII Plug control/status reg */ | |
61 | PDC_TBG_MODE = 0x41C, /* TBG mode (not SATAII) */ | |
62 | PDC_SLEW_CTL = 0x470, /* slew rate control reg (not SATAII) */ | |
63 | ||
64 | /* per-port ATA register offsets (from ap->ioaddr.cmd_addr) */ | |
95006188 MP |
65 | PDC_FEATURE = 0x04, /* Feature/Error reg (per port) */ |
66 | PDC_SECTOR_COUNT = 0x08, /* Sector count reg (per port) */ | |
67 | PDC_SECTOR_NUMBER = 0x0C, /* Sector number reg (per port) */ | |
68 | PDC_CYLINDER_LOW = 0x10, /* Cylinder low reg (per port) */ | |
69 | PDC_CYLINDER_HIGH = 0x14, /* Cylinder high reg (per port) */ | |
70 | PDC_DEVICE = 0x18, /* Device/Head reg (per port) */ | |
71 | PDC_COMMAND = 0x1C, /* Command/status reg (per port) */ | |
73fd456b | 72 | PDC_ALTSTATUS = 0x38, /* Alternate-status/device-control reg (per port) */ |
1da177e4 | 73 | PDC_PKT_SUBMIT = 0x40, /* Command packet pointer addr */ |
1da177e4 LT |
74 | PDC_GLOBAL_CTL = 0x48, /* Global control/status (per port) */ |
75 | PDC_CTLSTAT = 0x60, /* IDE control and status (per port) */ | |
821d22cd MP |
76 | |
77 | /* per-port SATA register offsets (from ap->ioaddr.scr_addr) */ | |
78 | PDC_PHYMODE4 = 0x14, | |
1da177e4 | 79 | |
176efb05 MP |
80 | /* PDC_GLOBAL_CTL bit definitions */ |
81 | PDC_PH_ERR = (1 << 8), /* PCI error while loading packet */ | |
82 | PDC_SH_ERR = (1 << 9), /* PCI error while loading S/G table */ | |
83 | PDC_DH_ERR = (1 << 10), /* PCI error while loading data */ | |
84 | PDC2_HTO_ERR = (1 << 12), /* host bus timeout */ | |
85 | PDC2_ATA_HBA_ERR = (1 << 13), /* error during SATA DATA FIS transmission */ | |
86 | PDC2_ATA_DMA_CNT_ERR = (1 << 14), /* DMA DATA FIS size differs from S/G count */ | |
87 | PDC_OVERRUN_ERR = (1 << 19), /* S/G byte count larger than HD requires */ | |
88 | PDC_UNDERRUN_ERR = (1 << 20), /* S/G byte count less than HD requires */ | |
89 | PDC_DRIVE_ERR = (1 << 21), /* drive error */ | |
90 | PDC_PCI_SYS_ERR = (1 << 22), /* PCI system error */ | |
91 | PDC1_PCI_PARITY_ERR = (1 << 23), /* PCI parity error (from SATA150 driver) */ | |
92 | PDC1_ERR_MASK = PDC1_PCI_PARITY_ERR, | |
5796d1c4 JG |
93 | PDC2_ERR_MASK = PDC2_HTO_ERR | PDC2_ATA_HBA_ERR | |
94 | PDC2_ATA_DMA_CNT_ERR, | |
95 | PDC_ERR_MASK = PDC_PH_ERR | PDC_SH_ERR | PDC_DH_ERR | | |
96 | PDC_OVERRUN_ERR | PDC_UNDERRUN_ERR | | |
97 | PDC_DRIVE_ERR | PDC_PCI_SYS_ERR | | |
98 | PDC1_ERR_MASK | PDC2_ERR_MASK, | |
1da177e4 LT |
99 | |
100 | board_2037x = 0, /* FastTrak S150 TX2plus */ | |
eca25dca TH |
101 | board_2037x_pata = 1, /* FastTrak S150 TX2plus PATA port */ |
102 | board_20319 = 2, /* FastTrak S150 TX4 */ | |
103 | board_20619 = 3, /* FastTrak TX4000 */ | |
104 | board_2057x = 4, /* SATAII150 Tx2plus */ | |
d0e58031 | 105 | board_2057x_pata = 5, /* SATAII150 Tx2plus PATA port */ |
eca25dca | 106 | board_40518 = 6, /* SATAII150 Tx4 */ |
1da177e4 | 107 | |
6340f019 | 108 | PDC_HAS_PATA = (1 << 1), /* PDC20375/20575 has PATA */ |
1da177e4 | 109 | |
95006188 MP |
110 | /* Sequence counter control registers bit definitions */ |
111 | PDC_SEQCNTRL_INT_MASK = (1 << 5), /* Sequence Interrupt Mask */ | |
112 | ||
113 | /* Feature register values */ | |
114 | PDC_FEATURE_ATAPI_PIO = 0x00, /* ATAPI data xfer by PIO */ | |
115 | PDC_FEATURE_ATAPI_DMA = 0x01, /* ATAPI data xfer by DMA */ | |
116 | ||
117 | /* Device/Head register values */ | |
118 | PDC_DEVICE_SATA = 0xE0, /* Device/Head value for SATA devices */ | |
119 | ||
25b93d81 MP |
120 | /* PDC_CTLSTAT bit definitions */ |
121 | PDC_DMA_ENABLE = (1 << 7), | |
122 | PDC_IRQ_DISABLE = (1 << 10), | |
1da177e4 | 123 | PDC_RESET = (1 << 11), /* HDMA reset */ |
50630195 | 124 | |
25b93d81 | 125 | PDC_COMMON_FLAGS = ATA_FLAG_NO_LEGACY | |
95006188 | 126 | ATA_FLAG_MMIO | |
3d0a59c0 | 127 | ATA_FLAG_PIO_POLLING, |
b2d1eee1 | 128 | |
eca25dca TH |
129 | /* ap->flags bits */ |
130 | PDC_FLAG_GEN_II = (1 << 24), | |
131 | PDC_FLAG_SATA_PATA = (1 << 25), /* supports SATA + PATA */ | |
132 | PDC_FLAG_4_PORTS = (1 << 26), /* 4 ports */ | |
1da177e4 LT |
133 | }; |
134 | ||
1da177e4 LT |
135 | struct pdc_port_priv { |
136 | u8 *pkt; | |
137 | dma_addr_t pkt_dma; | |
138 | }; | |
139 | ||
da3dbb17 TH |
140 | static int pdc_sata_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val); |
141 | static int pdc_sata_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val); | |
1da177e4 | 142 | static int pdc_ata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent); |
eca25dca TH |
143 | static int pdc_common_port_start(struct ata_port *ap); |
144 | static int pdc_sata_port_start(struct ata_port *ap); | |
1da177e4 | 145 | static void pdc_qc_prep(struct ata_queued_cmd *qc); |
057ace5e JG |
146 | static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf); |
147 | static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf); | |
95006188 | 148 | static int pdc_check_atapi_dma(struct ata_queued_cmd *qc); |
724114a5 | 149 | static int pdc_old_sata_check_atapi_dma(struct ata_queued_cmd *qc); |
1da177e4 | 150 | static void pdc_irq_clear(struct ata_port *ap); |
9363c382 | 151 | static unsigned int pdc_qc_issue(struct ata_queued_cmd *qc); |
25b93d81 | 152 | static void pdc_freeze(struct ata_port *ap); |
c07a9c49 | 153 | static void pdc_sata_freeze(struct ata_port *ap); |
25b93d81 | 154 | static void pdc_thaw(struct ata_port *ap); |
c07a9c49 | 155 | static void pdc_sata_thaw(struct ata_port *ap); |
a1efdaba | 156 | static void pdc_error_handler(struct ata_port *ap); |
25b93d81 | 157 | static void pdc_post_internal_cmd(struct ata_queued_cmd *qc); |
724114a5 MP |
158 | static int pdc_pata_cable_detect(struct ata_port *ap); |
159 | static int pdc_sata_cable_detect(struct ata_port *ap); | |
374b1873 | 160 | |
193515d5 | 161 | static struct scsi_host_template pdc_ata_sht = { |
68d1d07b | 162 | ATA_BASE_SHT(DRV_NAME), |
b9ccd4a9 | 163 | .sg_tablesize = PDC_MAX_PRD, |
1da177e4 | 164 | .dma_boundary = ATA_DMA_BOUNDARY, |
1da177e4 LT |
165 | }; |
166 | ||
029cfd6b TH |
167 | static const struct ata_port_operations pdc_common_ops = { |
168 | .inherits = &ata_sff_port_ops, | |
169 | ||
5682ed33 TH |
170 | .sff_tf_load = pdc_tf_load_mmio, |
171 | .sff_exec_command = pdc_exec_command_mmio, | |
95006188 | 172 | .check_atapi_dma = pdc_check_atapi_dma, |
95006188 | 173 | .qc_prep = pdc_qc_prep, |
9363c382 | 174 | .qc_issue = pdc_qc_issue, |
5682ed33 | 175 | .sff_irq_clear = pdc_irq_clear, |
95006188 | 176 | |
029cfd6b | 177 | .post_internal_cmd = pdc_post_internal_cmd, |
a1efdaba | 178 | .error_handler = pdc_error_handler, |
95006188 MP |
179 | }; |
180 | ||
029cfd6b TH |
181 | static struct ata_port_operations pdc_sata_ops = { |
182 | .inherits = &pdc_common_ops, | |
183 | .cable_detect = pdc_sata_cable_detect, | |
c07a9c49 MP |
184 | .freeze = pdc_sata_freeze, |
185 | .thaw = pdc_sata_thaw, | |
1da177e4 LT |
186 | .scr_read = pdc_sata_scr_read, |
187 | .scr_write = pdc_sata_scr_write, | |
eca25dca | 188 | .port_start = pdc_sata_port_start, |
1da177e4 LT |
189 | }; |
190 | ||
029cfd6b TH |
191 | /* First-generation chips need a more restrictive ->check_atapi_dma op */ |
192 | static struct ata_port_operations pdc_old_sata_ops = { | |
193 | .inherits = &pdc_sata_ops, | |
194 | .check_atapi_dma = pdc_old_sata_check_atapi_dma, | |
195 | }; | |
2cba582a | 196 | |
029cfd6b TH |
197 | static struct ata_port_operations pdc_pata_ops = { |
198 | .inherits = &pdc_common_ops, | |
199 | .cable_detect = pdc_pata_cable_detect, | |
5387373b MP |
200 | .freeze = pdc_freeze, |
201 | .thaw = pdc_thaw, | |
eca25dca | 202 | .port_start = pdc_common_port_start, |
2cba582a JG |
203 | }; |
204 | ||
98ac62de | 205 | static const struct ata_port_info pdc_port_info[] = { |
5595ddf9 | 206 | [board_2037x] = |
1da177e4 | 207 | { |
eca25dca TH |
208 | .flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA | |
209 | PDC_FLAG_SATA_PATA, | |
1da177e4 LT |
210 | .pio_mask = 0x1f, /* pio0-4 */ |
211 | .mwdma_mask = 0x07, /* mwdma0-2 */ | |
469248ab | 212 | .udma_mask = ATA_UDMA6, |
95006188 | 213 | .port_ops = &pdc_old_sata_ops, |
1da177e4 LT |
214 | }, |
215 | ||
5595ddf9 | 216 | [board_2037x_pata] = |
eca25dca TH |
217 | { |
218 | .flags = PDC_COMMON_FLAGS | ATA_FLAG_SLAVE_POSS, | |
219 | .pio_mask = 0x1f, /* pio0-4 */ | |
220 | .mwdma_mask = 0x07, /* mwdma0-2 */ | |
469248ab | 221 | .udma_mask = ATA_UDMA6, |
eca25dca TH |
222 | .port_ops = &pdc_pata_ops, |
223 | }, | |
224 | ||
5595ddf9 | 225 | [board_20319] = |
1da177e4 | 226 | { |
eca25dca TH |
227 | .flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA | |
228 | PDC_FLAG_4_PORTS, | |
1da177e4 LT |
229 | .pio_mask = 0x1f, /* pio0-4 */ |
230 | .mwdma_mask = 0x07, /* mwdma0-2 */ | |
469248ab | 231 | .udma_mask = ATA_UDMA6, |
95006188 | 232 | .port_ops = &pdc_old_sata_ops, |
1da177e4 | 233 | }, |
f497ba73 | 234 | |
5595ddf9 | 235 | [board_20619] = |
f497ba73 | 236 | { |
eca25dca TH |
237 | .flags = PDC_COMMON_FLAGS | ATA_FLAG_SLAVE_POSS | |
238 | PDC_FLAG_4_PORTS, | |
f497ba73 TL |
239 | .pio_mask = 0x1f, /* pio0-4 */ |
240 | .mwdma_mask = 0x07, /* mwdma0-2 */ | |
469248ab | 241 | .udma_mask = ATA_UDMA6, |
2cba582a | 242 | .port_ops = &pdc_pata_ops, |
f497ba73 | 243 | }, |
5a46fe89 | 244 | |
5595ddf9 | 245 | [board_2057x] = |
6340f019 | 246 | { |
eca25dca TH |
247 | .flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA | |
248 | PDC_FLAG_GEN_II | PDC_FLAG_SATA_PATA, | |
6340f019 LK |
249 | .pio_mask = 0x1f, /* pio0-4 */ |
250 | .mwdma_mask = 0x07, /* mwdma0-2 */ | |
469248ab | 251 | .udma_mask = ATA_UDMA6, |
6340f019 LK |
252 | .port_ops = &pdc_sata_ops, |
253 | }, | |
254 | ||
5595ddf9 | 255 | [board_2057x_pata] = |
eca25dca | 256 | { |
bb312235 | 257 | .flags = PDC_COMMON_FLAGS | ATA_FLAG_SLAVE_POSS | |
eca25dca TH |
258 | PDC_FLAG_GEN_II, |
259 | .pio_mask = 0x1f, /* pio0-4 */ | |
260 | .mwdma_mask = 0x07, /* mwdma0-2 */ | |
469248ab | 261 | .udma_mask = ATA_UDMA6, |
eca25dca TH |
262 | .port_ops = &pdc_pata_ops, |
263 | }, | |
264 | ||
5595ddf9 | 265 | [board_40518] = |
6340f019 | 266 | { |
eca25dca TH |
267 | .flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA | |
268 | PDC_FLAG_GEN_II | PDC_FLAG_4_PORTS, | |
6340f019 LK |
269 | .pio_mask = 0x1f, /* pio0-4 */ |
270 | .mwdma_mask = 0x07, /* mwdma0-2 */ | |
469248ab | 271 | .udma_mask = ATA_UDMA6, |
6340f019 LK |
272 | .port_ops = &pdc_sata_ops, |
273 | }, | |
1da177e4 LT |
274 | }; |
275 | ||
3b7d697d | 276 | static const struct pci_device_id pdc_ata_pci_tbl[] = { |
54bb3a94 | 277 | { PCI_VDEVICE(PROMISE, 0x3371), board_2037x }, |
54bb3a94 JG |
278 | { PCI_VDEVICE(PROMISE, 0x3373), board_2037x }, |
279 | { PCI_VDEVICE(PROMISE, 0x3375), board_2037x }, | |
280 | { PCI_VDEVICE(PROMISE, 0x3376), board_2037x }, | |
b2d1eee1 MP |
281 | { PCI_VDEVICE(PROMISE, 0x3570), board_2057x }, |
282 | { PCI_VDEVICE(PROMISE, 0x3571), board_2057x }, | |
54bb3a94 | 283 | { PCI_VDEVICE(PROMISE, 0x3574), board_2057x }, |
d324d462 | 284 | { PCI_VDEVICE(PROMISE, 0x3577), board_2057x }, |
b2d1eee1 | 285 | { PCI_VDEVICE(PROMISE, 0x3d73), board_2057x }, |
54bb3a94 | 286 | { PCI_VDEVICE(PROMISE, 0x3d75), board_2057x }, |
54bb3a94 JG |
287 | |
288 | { PCI_VDEVICE(PROMISE, 0x3318), board_20319 }, | |
289 | { PCI_VDEVICE(PROMISE, 0x3319), board_20319 }, | |
7f9992a2 MP |
290 | { PCI_VDEVICE(PROMISE, 0x3515), board_40518 }, |
291 | { PCI_VDEVICE(PROMISE, 0x3519), board_40518 }, | |
b2d1eee1 | 292 | { PCI_VDEVICE(PROMISE, 0x3d17), board_40518 }, |
54bb3a94 JG |
293 | { PCI_VDEVICE(PROMISE, 0x3d18), board_40518 }, |
294 | ||
295 | { PCI_VDEVICE(PROMISE, 0x6629), board_20619 }, | |
f497ba73 | 296 | |
1da177e4 LT |
297 | { } /* terminate list */ |
298 | }; | |
299 | ||
1da177e4 LT |
300 | static struct pci_driver pdc_ata_pci_driver = { |
301 | .name = DRV_NAME, | |
302 | .id_table = pdc_ata_pci_tbl, | |
303 | .probe = pdc_ata_init_one, | |
304 | .remove = ata_pci_remove_one, | |
305 | }; | |
306 | ||
724114a5 | 307 | static int pdc_common_port_start(struct ata_port *ap) |
1da177e4 | 308 | { |
cca3974e | 309 | struct device *dev = ap->host->dev; |
1da177e4 LT |
310 | struct pdc_port_priv *pp; |
311 | int rc; | |
312 | ||
313 | rc = ata_port_start(ap); | |
314 | if (rc) | |
315 | return rc; | |
316 | ||
24dc5f33 TH |
317 | pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL); |
318 | if (!pp) | |
319 | return -ENOMEM; | |
1da177e4 | 320 | |
24dc5f33 TH |
321 | pp->pkt = dmam_alloc_coherent(dev, 128, &pp->pkt_dma, GFP_KERNEL); |
322 | if (!pp->pkt) | |
323 | return -ENOMEM; | |
1da177e4 LT |
324 | |
325 | ap->private_data = pp; | |
326 | ||
724114a5 MP |
327 | return 0; |
328 | } | |
329 | ||
330 | static int pdc_sata_port_start(struct ata_port *ap) | |
331 | { | |
724114a5 MP |
332 | int rc; |
333 | ||
334 | rc = pdc_common_port_start(ap); | |
335 | if (rc) | |
336 | return rc; | |
337 | ||
599b7202 | 338 | /* fix up PHYMODE4 align timing */ |
eca25dca | 339 | if (ap->flags & PDC_FLAG_GEN_II) { |
821d22cd | 340 | void __iomem *sata_mmio = ap->ioaddr.scr_addr; |
599b7202 MP |
341 | unsigned int tmp; |
342 | ||
821d22cd | 343 | tmp = readl(sata_mmio + PDC_PHYMODE4); |
599b7202 | 344 | tmp = (tmp & ~3) | 1; /* set bits 1:0 = 0:1 */ |
821d22cd | 345 | writel(tmp, sata_mmio + PDC_PHYMODE4); |
599b7202 MP |
346 | } |
347 | ||
1da177e4 | 348 | return 0; |
1da177e4 LT |
349 | } |
350 | ||
1da177e4 LT |
351 | static void pdc_reset_port(struct ata_port *ap) |
352 | { | |
821d22cd | 353 | void __iomem *ata_ctlstat_mmio = ap->ioaddr.cmd_addr + PDC_CTLSTAT; |
1da177e4 LT |
354 | unsigned int i; |
355 | u32 tmp; | |
356 | ||
357 | for (i = 11; i > 0; i--) { | |
821d22cd | 358 | tmp = readl(ata_ctlstat_mmio); |
1da177e4 LT |
359 | if (tmp & PDC_RESET) |
360 | break; | |
361 | ||
362 | udelay(100); | |
363 | ||
364 | tmp |= PDC_RESET; | |
821d22cd | 365 | writel(tmp, ata_ctlstat_mmio); |
1da177e4 LT |
366 | } |
367 | ||
368 | tmp &= ~PDC_RESET; | |
821d22cd MP |
369 | writel(tmp, ata_ctlstat_mmio); |
370 | readl(ata_ctlstat_mmio); /* flush */ | |
1da177e4 LT |
371 | } |
372 | ||
724114a5 | 373 | static int pdc_pata_cable_detect(struct ata_port *ap) |
2cba582a | 374 | { |
d3fb4e8d | 375 | u8 tmp; |
821d22cd | 376 | void __iomem *ata_mmio = ap->ioaddr.cmd_addr; |
d3fb4e8d | 377 | |
821d22cd | 378 | tmp = readb(ata_mmio + PDC_CTLSTAT + 3); |
724114a5 MP |
379 | if (tmp & 0x01) |
380 | return ATA_CBL_PATA40; | |
381 | return ATA_CBL_PATA80; | |
382 | } | |
383 | ||
384 | static int pdc_sata_cable_detect(struct ata_port *ap) | |
385 | { | |
e2a9752a | 386 | return ATA_CBL_SATA; |
d3fb4e8d | 387 | } |
2cba582a | 388 | |
da3dbb17 | 389 | static int pdc_sata_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val) |
1da177e4 | 390 | { |
724114a5 | 391 | if (sc_reg > SCR_CONTROL) |
da3dbb17 TH |
392 | return -EINVAL; |
393 | *val = readl(ap->ioaddr.scr_addr + (sc_reg * 4)); | |
394 | return 0; | |
1da177e4 LT |
395 | } |
396 | ||
da3dbb17 | 397 | static int pdc_sata_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val) |
1da177e4 | 398 | { |
724114a5 | 399 | if (sc_reg > SCR_CONTROL) |
da3dbb17 | 400 | return -EINVAL; |
0d5ff566 | 401 | writel(val, ap->ioaddr.scr_addr + (sc_reg * 4)); |
da3dbb17 | 402 | return 0; |
1da177e4 LT |
403 | } |
404 | ||
fba6edbd | 405 | static void pdc_atapi_pkt(struct ata_queued_cmd *qc) |
95006188 | 406 | { |
4113bb6b MP |
407 | struct ata_port *ap = qc->ap; |
408 | dma_addr_t sg_table = ap->prd_dma; | |
409 | unsigned int cdb_len = qc->dev->cdb_len; | |
410 | u8 *cdb = qc->cdb; | |
411 | struct pdc_port_priv *pp = ap->private_data; | |
412 | u8 *buf = pp->pkt; | |
826cd156 | 413 | __le32 *buf32 = (__le32 *) buf; |
46a67143 | 414 | unsigned int dev_sel, feature; |
95006188 MP |
415 | |
416 | /* set control bits (byte 0), zero delay seq id (byte 3), | |
417 | * and seq id (byte 2) | |
418 | */ | |
fba6edbd | 419 | switch (qc->tf.protocol) { |
0dc36888 | 420 | case ATAPI_PROT_DMA: |
fba6edbd MP |
421 | if (!(qc->tf.flags & ATA_TFLAG_WRITE)) |
422 | buf32[0] = cpu_to_le32(PDC_PKT_READ); | |
423 | else | |
424 | buf32[0] = 0; | |
425 | break; | |
0dc36888 | 426 | case ATAPI_PROT_NODATA: |
fba6edbd MP |
427 | buf32[0] = cpu_to_le32(PDC_PKT_NODATA); |
428 | break; | |
429 | default: | |
430 | BUG(); | |
431 | break; | |
432 | } | |
95006188 MP |
433 | buf32[1] = cpu_to_le32(sg_table); /* S/G table addr */ |
434 | buf32[2] = 0; /* no next-packet */ | |
435 | ||
4113bb6b | 436 | /* select drive */ |
46a67143 | 437 | if (sata_scr_valid(&ap->link)) |
4113bb6b | 438 | dev_sel = PDC_DEVICE_SATA; |
46a67143 TH |
439 | else |
440 | dev_sel = qc->tf.device; | |
441 | ||
4113bb6b MP |
442 | buf[12] = (1 << 5) | ATA_REG_DEVICE; |
443 | buf[13] = dev_sel; | |
444 | buf[14] = (1 << 5) | ATA_REG_DEVICE | PDC_PKT_CLEAR_BSY; | |
445 | buf[15] = dev_sel; /* once more, waiting for BSY to clear */ | |
446 | ||
447 | buf[16] = (1 << 5) | ATA_REG_NSECT; | |
46a67143 | 448 | buf[17] = qc->tf.nsect; |
4113bb6b | 449 | buf[18] = (1 << 5) | ATA_REG_LBAL; |
46a67143 | 450 | buf[19] = qc->tf.lbal; |
4113bb6b MP |
451 | |
452 | /* set feature and byte counter registers */ | |
0dc36888 | 453 | if (qc->tf.protocol != ATAPI_PROT_DMA) |
4113bb6b | 454 | feature = PDC_FEATURE_ATAPI_PIO; |
46a67143 | 455 | else |
4113bb6b | 456 | feature = PDC_FEATURE_ATAPI_DMA; |
46a67143 | 457 | |
4113bb6b MP |
458 | buf[20] = (1 << 5) | ATA_REG_FEATURE; |
459 | buf[21] = feature; | |
460 | buf[22] = (1 << 5) | ATA_REG_BYTEL; | |
46a67143 | 461 | buf[23] = qc->tf.lbam; |
4113bb6b | 462 | buf[24] = (1 << 5) | ATA_REG_BYTEH; |
46a67143 | 463 | buf[25] = qc->tf.lbah; |
4113bb6b MP |
464 | |
465 | /* send ATAPI packet command 0xA0 */ | |
466 | buf[26] = (1 << 5) | ATA_REG_CMD; | |
46a67143 | 467 | buf[27] = qc->tf.command; |
4113bb6b MP |
468 | |
469 | /* select drive and check DRQ */ | |
470 | buf[28] = (1 << 5) | ATA_REG_DEVICE | PDC_PKT_WAIT_DRDY; | |
471 | buf[29] = dev_sel; | |
472 | ||
95006188 MP |
473 | /* we can represent cdb lengths 2/4/6/8/10/12/14/16 */ |
474 | BUG_ON(cdb_len & ~0x1E); | |
475 | ||
4113bb6b MP |
476 | /* append the CDB as the final part */ |
477 | buf[30] = (((cdb_len >> 1) & 7) << 5) | ATA_REG_DATA | PDC_LAST_REG; | |
478 | memcpy(buf+31, cdb, cdb_len); | |
95006188 MP |
479 | } |
480 | ||
b9ccd4a9 MP |
481 | /** |
482 | * pdc_fill_sg - Fill PCI IDE PRD table | |
483 | * @qc: Metadata associated with taskfile to be transferred | |
484 | * | |
485 | * Fill PCI IDE PRD (scatter-gather) table with segments | |
486 | * associated with the current disk command. | |
487 | * Make sure hardware does not choke on it. | |
488 | * | |
489 | * LOCKING: | |
490 | * spin_lock_irqsave(host lock) | |
491 | * | |
492 | */ | |
493 | static void pdc_fill_sg(struct ata_queued_cmd *qc) | |
494 | { | |
495 | struct ata_port *ap = qc->ap; | |
496 | struct scatterlist *sg; | |
b9ccd4a9 | 497 | const u32 SG_COUNT_ASIC_BUG = 41*4; |
ff2aeb1e TH |
498 | unsigned int si, idx; |
499 | u32 len; | |
b9ccd4a9 MP |
500 | |
501 | if (!(qc->flags & ATA_QCFLAG_DMAMAP)) | |
502 | return; | |
503 | ||
b9ccd4a9 | 504 | idx = 0; |
ff2aeb1e | 505 | for_each_sg(qc->sg, sg, qc->n_elem, si) { |
b9ccd4a9 | 506 | u32 addr, offset; |
6903c0f7 | 507 | u32 sg_len; |
b9ccd4a9 MP |
508 | |
509 | /* determine if physical DMA addr spans 64K boundary. | |
510 | * Note h/w doesn't support 64-bit, so we unconditionally | |
511 | * truncate dma_addr_t to u32. | |
512 | */ | |
513 | addr = (u32) sg_dma_address(sg); | |
514 | sg_len = sg_dma_len(sg); | |
515 | ||
516 | while (sg_len) { | |
517 | offset = addr & 0xffff; | |
518 | len = sg_len; | |
519 | if ((offset + sg_len) > 0x10000) | |
520 | len = 0x10000 - offset; | |
521 | ||
522 | ap->prd[idx].addr = cpu_to_le32(addr); | |
523 | ap->prd[idx].flags_len = cpu_to_le32(len & 0xffff); | |
524 | VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx, addr, len); | |
525 | ||
526 | idx++; | |
527 | sg_len -= len; | |
528 | addr += len; | |
529 | } | |
530 | } | |
531 | ||
ff2aeb1e | 532 | len = le32_to_cpu(ap->prd[idx - 1].flags_len); |
b9ccd4a9 | 533 | |
ff2aeb1e TH |
534 | if (len > SG_COUNT_ASIC_BUG) { |
535 | u32 addr; | |
b9ccd4a9 | 536 | |
ff2aeb1e | 537 | VPRINTK("Splitting last PRD.\n"); |
b9ccd4a9 | 538 | |
ff2aeb1e TH |
539 | addr = le32_to_cpu(ap->prd[idx - 1].addr); |
540 | ap->prd[idx - 1].flags_len = cpu_to_le32(len - SG_COUNT_ASIC_BUG); | |
541 | VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx - 1, addr, SG_COUNT_ASIC_BUG); | |
b9ccd4a9 | 542 | |
ff2aeb1e TH |
543 | addr = addr + len - SG_COUNT_ASIC_BUG; |
544 | len = SG_COUNT_ASIC_BUG; | |
545 | ap->prd[idx].addr = cpu_to_le32(addr); | |
546 | ap->prd[idx].flags_len = cpu_to_le32(len); | |
547 | VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx, addr, len); | |
b9ccd4a9 | 548 | |
ff2aeb1e | 549 | idx++; |
b9ccd4a9 | 550 | } |
ff2aeb1e TH |
551 | |
552 | ap->prd[idx - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT); | |
b9ccd4a9 MP |
553 | } |
554 | ||
1da177e4 LT |
555 | static void pdc_qc_prep(struct ata_queued_cmd *qc) |
556 | { | |
557 | struct pdc_port_priv *pp = qc->ap->private_data; | |
558 | unsigned int i; | |
559 | ||
560 | VPRINTK("ENTER\n"); | |
561 | ||
562 | switch (qc->tf.protocol) { | |
563 | case ATA_PROT_DMA: | |
b9ccd4a9 | 564 | pdc_fill_sg(qc); |
1da177e4 LT |
565 | /* fall through */ |
566 | ||
567 | case ATA_PROT_NODATA: | |
568 | i = pdc_pkt_header(&qc->tf, qc->ap->prd_dma, | |
569 | qc->dev->devno, pp->pkt); | |
570 | ||
571 | if (qc->tf.flags & ATA_TFLAG_LBA48) | |
572 | i = pdc_prep_lba48(&qc->tf, pp->pkt, i); | |
573 | else | |
574 | i = pdc_prep_lba28(&qc->tf, pp->pkt, i); | |
575 | ||
576 | pdc_pkt_footer(&qc->tf, pp->pkt, i); | |
577 | break; | |
578 | ||
0dc36888 | 579 | case ATAPI_PROT_PIO: |
b9ccd4a9 | 580 | pdc_fill_sg(qc); |
95006188 MP |
581 | break; |
582 | ||
0dc36888 | 583 | case ATAPI_PROT_DMA: |
b9ccd4a9 | 584 | pdc_fill_sg(qc); |
fba6edbd | 585 | /*FALLTHROUGH*/ |
0dc36888 | 586 | case ATAPI_PROT_NODATA: |
fba6edbd | 587 | pdc_atapi_pkt(qc); |
95006188 MP |
588 | break; |
589 | ||
1da177e4 LT |
590 | default: |
591 | break; | |
592 | } | |
593 | } | |
594 | ||
c07a9c49 MP |
595 | static int pdc_is_sataii_tx4(unsigned long flags) |
596 | { | |
597 | const unsigned long mask = PDC_FLAG_GEN_II | PDC_FLAG_4_PORTS; | |
598 | return (flags & mask) == mask; | |
599 | } | |
600 | ||
601 | static unsigned int pdc_port_no_to_ata_no(unsigned int port_no, | |
602 | int is_sataii_tx4) | |
603 | { | |
604 | static const unsigned char sataii_tx4_port_remap[4] = { 3, 1, 0, 2}; | |
605 | return is_sataii_tx4 ? sataii_tx4_port_remap[port_no] : port_no; | |
606 | } | |
607 | ||
608 | static unsigned int pdc_sata_nr_ports(const struct ata_port *ap) | |
609 | { | |
610 | return (ap->flags & PDC_FLAG_4_PORTS) ? 4 : 2; | |
611 | } | |
612 | ||
613 | static unsigned int pdc_sata_ata_port_to_ata_no(const struct ata_port *ap) | |
614 | { | |
615 | const struct ata_host *host = ap->host; | |
616 | unsigned int nr_ports = pdc_sata_nr_ports(ap); | |
617 | unsigned int i; | |
618 | ||
619 | for(i = 0; i < nr_ports && host->ports[i] != ap; ++i) | |
620 | ; | |
621 | BUG_ON(i >= nr_ports); | |
622 | return pdc_port_no_to_ata_no(i, pdc_is_sataii_tx4(ap->flags)); | |
623 | } | |
624 | ||
625 | static unsigned int pdc_sata_hotplug_offset(const struct ata_port *ap) | |
626 | { | |
627 | return (ap->flags & PDC_FLAG_GEN_II) ? PDC2_SATA_PLUG_CSR : PDC_SATA_PLUG_CSR; | |
628 | } | |
629 | ||
25b93d81 MP |
630 | static void pdc_freeze(struct ata_port *ap) |
631 | { | |
821d22cd | 632 | void __iomem *ata_mmio = ap->ioaddr.cmd_addr; |
25b93d81 MP |
633 | u32 tmp; |
634 | ||
821d22cd | 635 | tmp = readl(ata_mmio + PDC_CTLSTAT); |
25b93d81 MP |
636 | tmp |= PDC_IRQ_DISABLE; |
637 | tmp &= ~PDC_DMA_ENABLE; | |
821d22cd MP |
638 | writel(tmp, ata_mmio + PDC_CTLSTAT); |
639 | readl(ata_mmio + PDC_CTLSTAT); /* flush */ | |
25b93d81 MP |
640 | } |
641 | ||
c07a9c49 MP |
642 | static void pdc_sata_freeze(struct ata_port *ap) |
643 | { | |
644 | struct ata_host *host = ap->host; | |
645 | void __iomem *host_mmio = host->iomap[PDC_MMIO_BAR]; | |
646 | unsigned int hotplug_offset = pdc_sata_hotplug_offset(ap); | |
647 | unsigned int ata_no = pdc_sata_ata_port_to_ata_no(ap); | |
648 | u32 hotplug_status; | |
649 | ||
650 | /* Disable hotplug events on this port. | |
651 | * | |
652 | * Locking: | |
653 | * 1) hotplug register accesses must be serialised via host->lock | |
654 | * 2) ap->lock == &ap->host->lock | |
655 | * 3) ->freeze() and ->thaw() are called with ap->lock held | |
656 | */ | |
657 | hotplug_status = readl(host_mmio + hotplug_offset); | |
658 | hotplug_status |= 0x11 << (ata_no + 16); | |
659 | writel(hotplug_status, host_mmio + hotplug_offset); | |
660 | readl(host_mmio + hotplug_offset); /* flush */ | |
661 | ||
662 | pdc_freeze(ap); | |
663 | } | |
664 | ||
25b93d81 MP |
665 | static void pdc_thaw(struct ata_port *ap) |
666 | { | |
821d22cd | 667 | void __iomem *ata_mmio = ap->ioaddr.cmd_addr; |
25b93d81 MP |
668 | u32 tmp; |
669 | ||
670 | /* clear IRQ */ | |
821d22cd | 671 | readl(ata_mmio + PDC_COMMAND); |
25b93d81 MP |
672 | |
673 | /* turn IRQ back on */ | |
821d22cd | 674 | tmp = readl(ata_mmio + PDC_CTLSTAT); |
25b93d81 | 675 | tmp &= ~PDC_IRQ_DISABLE; |
821d22cd MP |
676 | writel(tmp, ata_mmio + PDC_CTLSTAT); |
677 | readl(ata_mmio + PDC_CTLSTAT); /* flush */ | |
25b93d81 MP |
678 | } |
679 | ||
c07a9c49 MP |
680 | static void pdc_sata_thaw(struct ata_port *ap) |
681 | { | |
682 | struct ata_host *host = ap->host; | |
683 | void __iomem *host_mmio = host->iomap[PDC_MMIO_BAR]; | |
684 | unsigned int hotplug_offset = pdc_sata_hotplug_offset(ap); | |
685 | unsigned int ata_no = pdc_sata_ata_port_to_ata_no(ap); | |
686 | u32 hotplug_status; | |
687 | ||
688 | pdc_thaw(ap); | |
689 | ||
690 | /* Enable hotplug events on this port. | |
691 | * Locking: see pdc_sata_freeze(). | |
692 | */ | |
693 | hotplug_status = readl(host_mmio + hotplug_offset); | |
694 | hotplug_status |= 0x11 << ata_no; | |
695 | hotplug_status &= ~(0x11 << (ata_no + 16)); | |
696 | writel(hotplug_status, host_mmio + hotplug_offset); | |
697 | readl(host_mmio + hotplug_offset); /* flush */ | |
698 | } | |
699 | ||
a1efdaba | 700 | static void pdc_error_handler(struct ata_port *ap) |
25b93d81 | 701 | { |
25b93d81 MP |
702 | if (!(ap->pflags & ATA_PFLAG_FROZEN)) |
703 | pdc_reset_port(ap); | |
704 | ||
a1efdaba | 705 | ata_std_error_handler(ap); |
724114a5 MP |
706 | } |
707 | ||
25b93d81 MP |
708 | static void pdc_post_internal_cmd(struct ata_queued_cmd *qc) |
709 | { | |
710 | struct ata_port *ap = qc->ap; | |
711 | ||
25b93d81 | 712 | /* make DMA engine forget about the failed command */ |
a51d644a | 713 | if (qc->flags & ATA_QCFLAG_FAILED) |
25b93d81 MP |
714 | pdc_reset_port(ap); |
715 | } | |
716 | ||
176efb05 MP |
717 | static void pdc_error_intr(struct ata_port *ap, struct ata_queued_cmd *qc, |
718 | u32 port_status, u32 err_mask) | |
719 | { | |
9af5c9c9 | 720 | struct ata_eh_info *ehi = &ap->link.eh_info; |
176efb05 MP |
721 | unsigned int ac_err_mask = 0; |
722 | ||
723 | ata_ehi_clear_desc(ehi); | |
724 | ata_ehi_push_desc(ehi, "port_status 0x%08x", port_status); | |
725 | port_status &= err_mask; | |
726 | ||
727 | if (port_status & PDC_DRIVE_ERR) | |
728 | ac_err_mask |= AC_ERR_DEV; | |
729 | if (port_status & (PDC_OVERRUN_ERR | PDC_UNDERRUN_ERR)) | |
730 | ac_err_mask |= AC_ERR_HSM; | |
731 | if (port_status & (PDC2_ATA_HBA_ERR | PDC2_ATA_DMA_CNT_ERR)) | |
732 | ac_err_mask |= AC_ERR_ATA_BUS; | |
733 | if (port_status & (PDC_PH_ERR | PDC_SH_ERR | PDC_DH_ERR | PDC2_HTO_ERR | |
734 | | PDC_PCI_SYS_ERR | PDC1_PCI_PARITY_ERR)) | |
735 | ac_err_mask |= AC_ERR_HOST_BUS; | |
736 | ||
936fd732 | 737 | if (sata_scr_valid(&ap->link)) { |
da3dbb17 TH |
738 | u32 serror; |
739 | ||
740 | pdc_sata_scr_read(ap, SCR_ERROR, &serror); | |
741 | ehi->serror |= serror; | |
742 | } | |
ce2d3abc | 743 | |
176efb05 | 744 | qc->err_mask |= ac_err_mask; |
ce2d3abc MP |
745 | |
746 | pdc_reset_port(ap); | |
8ffcfd9d MP |
747 | |
748 | ata_port_abort(ap); | |
176efb05 MP |
749 | } |
750 | ||
d0e58031 MP |
751 | static inline unsigned int pdc_host_intr(struct ata_port *ap, |
752 | struct ata_queued_cmd *qc) | |
1da177e4 | 753 | { |
a22e2eb0 | 754 | unsigned int handled = 0; |
821d22cd | 755 | void __iomem *ata_mmio = ap->ioaddr.cmd_addr; |
176efb05 MP |
756 | u32 port_status, err_mask; |
757 | ||
758 | err_mask = PDC_ERR_MASK; | |
eca25dca | 759 | if (ap->flags & PDC_FLAG_GEN_II) |
176efb05 MP |
760 | err_mask &= ~PDC1_ERR_MASK; |
761 | else | |
762 | err_mask &= ~PDC2_ERR_MASK; | |
821d22cd | 763 | port_status = readl(ata_mmio + PDC_GLOBAL_CTL); |
176efb05 MP |
764 | if (unlikely(port_status & err_mask)) { |
765 | pdc_error_intr(ap, qc, port_status, err_mask); | |
766 | return 1; | |
1da177e4 LT |
767 | } |
768 | ||
769 | switch (qc->tf.protocol) { | |
770 | case ATA_PROT_DMA: | |
771 | case ATA_PROT_NODATA: | |
0dc36888 TH |
772 | case ATAPI_PROT_DMA: |
773 | case ATAPI_PROT_NODATA: | |
a22e2eb0 AL |
774 | qc->err_mask |= ac_err_mask(ata_wait_idle(ap)); |
775 | ata_qc_complete(qc); | |
1da177e4 LT |
776 | handled = 1; |
777 | break; | |
778 | ||
d0e58031 | 779 | default: |
ee500aab AL |
780 | ap->stats.idle_irq++; |
781 | break; | |
d0e58031 | 782 | } |
1da177e4 | 783 | |
ee500aab | 784 | return handled; |
1da177e4 LT |
785 | } |
786 | ||
787 | static void pdc_irq_clear(struct ata_port *ap) | |
788 | { | |
821d22cd | 789 | void __iomem *ata_mmio = ap->ioaddr.cmd_addr; |
1da177e4 | 790 | |
821d22cd | 791 | readl(ata_mmio + PDC_COMMAND); |
1da177e4 LT |
792 | } |
793 | ||
5796d1c4 | 794 | static irqreturn_t pdc_interrupt(int irq, void *dev_instance) |
1da177e4 | 795 | { |
cca3974e | 796 | struct ata_host *host = dev_instance; |
1da177e4 LT |
797 | struct ata_port *ap; |
798 | u32 mask = 0; | |
799 | unsigned int i, tmp; | |
800 | unsigned int handled = 0; | |
821d22cd | 801 | void __iomem *host_mmio; |
a77720ad MP |
802 | unsigned int hotplug_offset, ata_no; |
803 | u32 hotplug_status; | |
804 | int is_sataii_tx4; | |
1da177e4 LT |
805 | |
806 | VPRINTK("ENTER\n"); | |
807 | ||
0d5ff566 | 808 | if (!host || !host->iomap[PDC_MMIO_BAR]) { |
1da177e4 LT |
809 | VPRINTK("QUICK EXIT\n"); |
810 | return IRQ_NONE; | |
811 | } | |
812 | ||
821d22cd | 813 | host_mmio = host->iomap[PDC_MMIO_BAR]; |
1da177e4 | 814 | |
c07a9c49 MP |
815 | spin_lock(&host->lock); |
816 | ||
a77720ad MP |
817 | /* read and clear hotplug flags for all ports */ |
818 | if (host->ports[0]->flags & PDC_FLAG_GEN_II) | |
819 | hotplug_offset = PDC2_SATA_PLUG_CSR; | |
820 | else | |
821 | hotplug_offset = PDC_SATA_PLUG_CSR; | |
821d22cd | 822 | hotplug_status = readl(host_mmio + hotplug_offset); |
a77720ad | 823 | if (hotplug_status & 0xff) |
821d22cd | 824 | writel(hotplug_status | 0xff, host_mmio + hotplug_offset); |
a77720ad MP |
825 | hotplug_status &= 0xff; /* clear uninteresting bits */ |
826 | ||
1da177e4 | 827 | /* reading should also clear interrupts */ |
821d22cd | 828 | mask = readl(host_mmio + PDC_INT_SEQMASK); |
1da177e4 | 829 | |
a77720ad | 830 | if (mask == 0xffffffff && hotplug_status == 0) { |
1da177e4 | 831 | VPRINTK("QUICK EXIT 2\n"); |
c07a9c49 | 832 | goto done_irq; |
1da177e4 | 833 | } |
6340f019 | 834 | |
1da177e4 | 835 | mask &= 0xffff; /* only 16 tags possible */ |
a77720ad | 836 | if (mask == 0 && hotplug_status == 0) { |
1da177e4 | 837 | VPRINTK("QUICK EXIT 3\n"); |
6340f019 | 838 | goto done_irq; |
1da177e4 LT |
839 | } |
840 | ||
821d22cd | 841 | writel(mask, host_mmio + PDC_INT_SEQMASK); |
1da177e4 | 842 | |
a77720ad MP |
843 | is_sataii_tx4 = pdc_is_sataii_tx4(host->ports[0]->flags); |
844 | ||
cca3974e | 845 | for (i = 0; i < host->n_ports; i++) { |
1da177e4 | 846 | VPRINTK("port %u\n", i); |
cca3974e | 847 | ap = host->ports[i]; |
a77720ad MP |
848 | |
849 | /* check for a plug or unplug event */ | |
850 | ata_no = pdc_port_no_to_ata_no(i, is_sataii_tx4); | |
851 | tmp = hotplug_status & (0x11 << ata_no); | |
852 | if (tmp && ap && | |
853 | !(ap->flags & ATA_FLAG_DISABLED)) { | |
9af5c9c9 | 854 | struct ata_eh_info *ehi = &ap->link.eh_info; |
a77720ad MP |
855 | ata_ehi_clear_desc(ehi); |
856 | ata_ehi_hotplugged(ehi); | |
857 | ata_ehi_push_desc(ehi, "hotplug_status %#x", tmp); | |
858 | ata_port_freeze(ap); | |
859 | ++handled; | |
860 | continue; | |
861 | } | |
862 | ||
863 | /* check for a packet interrupt */ | |
1da177e4 | 864 | tmp = mask & (1 << (i + 1)); |
c1389503 | 865 | if (tmp && ap && |
029f5468 | 866 | !(ap->flags & ATA_FLAG_DISABLED)) { |
1da177e4 LT |
867 | struct ata_queued_cmd *qc; |
868 | ||
9af5c9c9 | 869 | qc = ata_qc_from_tag(ap, ap->link.active_tag); |
e50362ec | 870 | if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) |
1da177e4 LT |
871 | handled += pdc_host_intr(ap, qc); |
872 | } | |
873 | } | |
874 | ||
1da177e4 LT |
875 | VPRINTK("EXIT\n"); |
876 | ||
6340f019 | 877 | done_irq: |
cca3974e | 878 | spin_unlock(&host->lock); |
1da177e4 LT |
879 | return IRQ_RETVAL(handled); |
880 | } | |
881 | ||
882 | static inline void pdc_packet_start(struct ata_queued_cmd *qc) | |
883 | { | |
884 | struct ata_port *ap = qc->ap; | |
885 | struct pdc_port_priv *pp = ap->private_data; | |
821d22cd MP |
886 | void __iomem *host_mmio = ap->host->iomap[PDC_MMIO_BAR]; |
887 | void __iomem *ata_mmio = ap->ioaddr.cmd_addr; | |
1da177e4 LT |
888 | unsigned int port_no = ap->port_no; |
889 | u8 seq = (u8) (port_no + 1); | |
890 | ||
891 | VPRINTK("ENTER, ap %p\n", ap); | |
892 | ||
821d22cd MP |
893 | writel(0x00000001, host_mmio + (seq * 4)); |
894 | readl(host_mmio + (seq * 4)); /* flush */ | |
1da177e4 LT |
895 | |
896 | pp->pkt[2] = seq; | |
897 | wmb(); /* flush PRD, pkt writes */ | |
821d22cd MP |
898 | writel(pp->pkt_dma, ata_mmio + PDC_PKT_SUBMIT); |
899 | readl(ata_mmio + PDC_PKT_SUBMIT); /* flush */ | |
1da177e4 LT |
900 | } |
901 | ||
9363c382 | 902 | static unsigned int pdc_qc_issue(struct ata_queued_cmd *qc) |
1da177e4 LT |
903 | { |
904 | switch (qc->tf.protocol) { | |
0dc36888 | 905 | case ATAPI_PROT_NODATA: |
fba6edbd MP |
906 | if (qc->dev->flags & ATA_DFLAG_CDB_INTR) |
907 | break; | |
908 | /*FALLTHROUGH*/ | |
51b94d2a TH |
909 | case ATA_PROT_NODATA: |
910 | if (qc->tf.flags & ATA_TFLAG_POLLING) | |
911 | break; | |
912 | /*FALLTHROUGH*/ | |
0dc36888 | 913 | case ATAPI_PROT_DMA: |
1da177e4 | 914 | case ATA_PROT_DMA: |
1da177e4 LT |
915 | pdc_packet_start(qc); |
916 | return 0; | |
917 | ||
1da177e4 LT |
918 | default: |
919 | break; | |
920 | } | |
921 | ||
9363c382 | 922 | return ata_sff_qc_issue(qc); |
1da177e4 LT |
923 | } |
924 | ||
057ace5e | 925 | static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf) |
1da177e4 | 926 | { |
0dc36888 | 927 | WARN_ON(tf->protocol == ATA_PROT_DMA || tf->protocol == ATAPI_PROT_DMA); |
9363c382 | 928 | ata_sff_tf_load(ap, tf); |
1da177e4 LT |
929 | } |
930 | ||
5796d1c4 JG |
931 | static void pdc_exec_command_mmio(struct ata_port *ap, |
932 | const struct ata_taskfile *tf) | |
1da177e4 | 933 | { |
0dc36888 | 934 | WARN_ON(tf->protocol == ATA_PROT_DMA || tf->protocol == ATAPI_PROT_DMA); |
9363c382 | 935 | ata_sff_exec_command(ap, tf); |
1da177e4 LT |
936 | } |
937 | ||
95006188 MP |
938 | static int pdc_check_atapi_dma(struct ata_queued_cmd *qc) |
939 | { | |
940 | u8 *scsicmd = qc->scsicmd->cmnd; | |
941 | int pio = 1; /* atapi dma off by default */ | |
942 | ||
943 | /* Whitelist commands that may use DMA. */ | |
944 | switch (scsicmd[0]) { | |
945 | case WRITE_12: | |
946 | case WRITE_10: | |
947 | case WRITE_6: | |
948 | case READ_12: | |
949 | case READ_10: | |
950 | case READ_6: | |
951 | case 0xad: /* READ_DVD_STRUCTURE */ | |
952 | case 0xbe: /* READ_CD */ | |
953 | pio = 0; | |
954 | } | |
955 | /* -45150 (FFFF4FA2) to -1 (FFFFFFFF) shall use PIO mode */ | |
956 | if (scsicmd[0] == WRITE_10) { | |
5796d1c4 JG |
957 | unsigned int lba = |
958 | (scsicmd[2] << 24) | | |
959 | (scsicmd[3] << 16) | | |
960 | (scsicmd[4] << 8) | | |
961 | scsicmd[5]; | |
95006188 MP |
962 | if (lba >= 0xFFFF4FA2) |
963 | pio = 1; | |
964 | } | |
965 | return pio; | |
966 | } | |
967 | ||
724114a5 | 968 | static int pdc_old_sata_check_atapi_dma(struct ata_queued_cmd *qc) |
95006188 | 969 | { |
95006188 | 970 | /* First generation chips cannot use ATAPI DMA on SATA ports */ |
724114a5 | 971 | return 1; |
95006188 | 972 | } |
1da177e4 | 973 | |
eca25dca TH |
974 | static void pdc_ata_setup_port(struct ata_port *ap, |
975 | void __iomem *base, void __iomem *scr_addr) | |
1da177e4 | 976 | { |
eca25dca TH |
977 | ap->ioaddr.cmd_addr = base; |
978 | ap->ioaddr.data_addr = base; | |
979 | ap->ioaddr.feature_addr = | |
980 | ap->ioaddr.error_addr = base + 0x4; | |
981 | ap->ioaddr.nsect_addr = base + 0x8; | |
982 | ap->ioaddr.lbal_addr = base + 0xc; | |
983 | ap->ioaddr.lbam_addr = base + 0x10; | |
984 | ap->ioaddr.lbah_addr = base + 0x14; | |
985 | ap->ioaddr.device_addr = base + 0x18; | |
986 | ap->ioaddr.command_addr = | |
987 | ap->ioaddr.status_addr = base + 0x1c; | |
988 | ap->ioaddr.altstatus_addr = | |
989 | ap->ioaddr.ctl_addr = base + 0x38; | |
990 | ap->ioaddr.scr_addr = scr_addr; | |
1da177e4 LT |
991 | } |
992 | ||
eca25dca | 993 | static void pdc_host_init(struct ata_host *host) |
1da177e4 | 994 | { |
821d22cd | 995 | void __iomem *host_mmio = host->iomap[PDC_MMIO_BAR]; |
eca25dca | 996 | int is_gen2 = host->ports[0]->flags & PDC_FLAG_GEN_II; |
d324d462 | 997 | int hotplug_offset; |
1da177e4 LT |
998 | u32 tmp; |
999 | ||
eca25dca | 1000 | if (is_gen2) |
d324d462 MP |
1001 | hotplug_offset = PDC2_SATA_PLUG_CSR; |
1002 | else | |
1003 | hotplug_offset = PDC_SATA_PLUG_CSR; | |
1004 | ||
1da177e4 LT |
1005 | /* |
1006 | * Except for the hotplug stuff, this is voodoo from the | |
1007 | * Promise driver. Label this entire section | |
1008 | * "TODO: figure out why we do this" | |
1009 | */ | |
1010 | ||
b2d1eee1 | 1011 | /* enable BMR_BURST, maybe change FIFO_SHD to 8 dwords */ |
821d22cd | 1012 | tmp = readl(host_mmio + PDC_FLASH_CTL); |
b2d1eee1 | 1013 | tmp |= 0x02000; /* bit 13 (enable bmr burst) */ |
eca25dca | 1014 | if (!is_gen2) |
b2d1eee1 | 1015 | tmp |= 0x10000; /* bit 16 (fifo threshold at 8 dw) */ |
821d22cd | 1016 | writel(tmp, host_mmio + PDC_FLASH_CTL); |
1da177e4 LT |
1017 | |
1018 | /* clear plug/unplug flags for all ports */ | |
821d22cd MP |
1019 | tmp = readl(host_mmio + hotplug_offset); |
1020 | writel(tmp | 0xff, host_mmio + hotplug_offset); | |
1da177e4 | 1021 | |
a77720ad | 1022 | /* unmask plug/unplug ints */ |
821d22cd MP |
1023 | tmp = readl(host_mmio + hotplug_offset); |
1024 | writel(tmp & ~0xff0000, host_mmio + hotplug_offset); | |
1da177e4 | 1025 | |
b2d1eee1 | 1026 | /* don't initialise TBG or SLEW on 2nd generation chips */ |
eca25dca | 1027 | if (is_gen2) |
b2d1eee1 MP |
1028 | return; |
1029 | ||
1da177e4 | 1030 | /* reduce TBG clock to 133 Mhz. */ |
821d22cd | 1031 | tmp = readl(host_mmio + PDC_TBG_MODE); |
1da177e4 LT |
1032 | tmp &= ~0x30000; /* clear bit 17, 16*/ |
1033 | tmp |= 0x10000; /* set bit 17:16 = 0:1 */ | |
821d22cd | 1034 | writel(tmp, host_mmio + PDC_TBG_MODE); |
1da177e4 | 1035 | |
821d22cd | 1036 | readl(host_mmio + PDC_TBG_MODE); /* flush */ |
1da177e4 LT |
1037 | msleep(10); |
1038 | ||
1039 | /* adjust slew rate control register. */ | |
821d22cd | 1040 | tmp = readl(host_mmio + PDC_SLEW_CTL); |
1da177e4 LT |
1041 | tmp &= 0xFFFFF03F; /* clear bit 11 ~ 6 */ |
1042 | tmp |= 0x00000900; /* set bit 11-9 = 100b , bit 8-6 = 100 */ | |
821d22cd | 1043 | writel(tmp, host_mmio + PDC_SLEW_CTL); |
1da177e4 LT |
1044 | } |
1045 | ||
5796d1c4 JG |
1046 | static int pdc_ata_init_one(struct pci_dev *pdev, |
1047 | const struct pci_device_id *ent) | |
1da177e4 LT |
1048 | { |
1049 | static int printed_version; | |
eca25dca TH |
1050 | const struct ata_port_info *pi = &pdc_port_info[ent->driver_data]; |
1051 | const struct ata_port_info *ppi[PDC_MAX_PORTS]; | |
1052 | struct ata_host *host; | |
821d22cd | 1053 | void __iomem *host_mmio; |
eca25dca | 1054 | int n_ports, i, rc; |
5ac2fe57 | 1055 | int is_sataii_tx4; |
1da177e4 LT |
1056 | |
1057 | if (!printed_version++) | |
a9524a76 | 1058 | dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n"); |
1da177e4 | 1059 | |
eca25dca | 1060 | /* enable and acquire resources */ |
24dc5f33 | 1061 | rc = pcim_enable_device(pdev); |
1da177e4 LT |
1062 | if (rc) |
1063 | return rc; | |
1064 | ||
0d5ff566 TH |
1065 | rc = pcim_iomap_regions(pdev, 1 << PDC_MMIO_BAR, DRV_NAME); |
1066 | if (rc == -EBUSY) | |
24dc5f33 | 1067 | pcim_pin_device(pdev); |
0d5ff566 | 1068 | if (rc) |
24dc5f33 | 1069 | return rc; |
821d22cd | 1070 | host_mmio = pcim_iomap_table(pdev)[PDC_MMIO_BAR]; |
1da177e4 | 1071 | |
eca25dca TH |
1072 | /* determine port configuration and setup host */ |
1073 | n_ports = 2; | |
1074 | if (pi->flags & PDC_FLAG_4_PORTS) | |
1075 | n_ports = 4; | |
1076 | for (i = 0; i < n_ports; i++) | |
1077 | ppi[i] = pi; | |
1da177e4 | 1078 | |
eca25dca | 1079 | if (pi->flags & PDC_FLAG_SATA_PATA) { |
821d22cd | 1080 | u8 tmp = readb(host_mmio + PDC_FLASH_CTL + 1); |
d0e58031 | 1081 | if (!(tmp & 0x80)) |
eca25dca | 1082 | ppi[n_ports++] = pi + 1; |
eca25dca | 1083 | } |
1da177e4 | 1084 | |
eca25dca TH |
1085 | host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports); |
1086 | if (!host) { | |
1087 | dev_printk(KERN_ERR, &pdev->dev, "failed to allocate host\n"); | |
24dc5f33 | 1088 | return -ENOMEM; |
1da177e4 | 1089 | } |
eca25dca | 1090 | host->iomap = pcim_iomap_table(pdev); |
1da177e4 | 1091 | |
d0e58031 | 1092 | is_sataii_tx4 = pdc_is_sataii_tx4(pi->flags); |
5ac2fe57 | 1093 | for (i = 0; i < host->n_ports; i++) { |
cbcdd875 | 1094 | struct ata_port *ap = host->ports[i]; |
d0e58031 | 1095 | unsigned int ata_no = pdc_port_no_to_ata_no(i, is_sataii_tx4); |
821d22cd | 1096 | unsigned int ata_offset = 0x200 + ata_no * 0x80; |
cbcdd875 TH |
1097 | unsigned int scr_offset = 0x400 + ata_no * 0x100; |
1098 | ||
821d22cd | 1099 | pdc_ata_setup_port(ap, host_mmio + ata_offset, host_mmio + scr_offset); |
cbcdd875 TH |
1100 | |
1101 | ata_port_pbar_desc(ap, PDC_MMIO_BAR, -1, "mmio"); | |
821d22cd | 1102 | ata_port_pbar_desc(ap, PDC_MMIO_BAR, ata_offset, "ata"); |
5ac2fe57 | 1103 | } |
1da177e4 LT |
1104 | |
1105 | /* initialize adapter */ | |
eca25dca | 1106 | pdc_host_init(host); |
1da177e4 | 1107 | |
eca25dca TH |
1108 | rc = pci_set_dma_mask(pdev, ATA_DMA_MASK); |
1109 | if (rc) | |
1110 | return rc; | |
1111 | rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK); | |
1112 | if (rc) | |
1113 | return rc; | |
1da177e4 | 1114 | |
eca25dca TH |
1115 | /* start host, request IRQ and attach */ |
1116 | pci_set_master(pdev); | |
1117 | return ata_host_activate(host, pdev->irq, pdc_interrupt, IRQF_SHARED, | |
1118 | &pdc_ata_sht); | |
1da177e4 LT |
1119 | } |
1120 | ||
1da177e4 LT |
1121 | static int __init pdc_ata_init(void) |
1122 | { | |
b7887196 | 1123 | return pci_register_driver(&pdc_ata_pci_driver); |
1da177e4 LT |
1124 | } |
1125 | ||
1da177e4 LT |
1126 | static void __exit pdc_ata_exit(void) |
1127 | { | |
1128 | pci_unregister_driver(&pdc_ata_pci_driver); | |
1129 | } | |
1130 | ||
1da177e4 | 1131 | MODULE_AUTHOR("Jeff Garzik"); |
f497ba73 | 1132 | MODULE_DESCRIPTION("Promise ATA TX2/TX4/TX4000 low-level driver"); |
1da177e4 LT |
1133 | MODULE_LICENSE("GPL"); |
1134 | MODULE_DEVICE_TABLE(pci, pdc_ata_pci_tbl); | |
1135 | MODULE_VERSION(DRV_VERSION); | |
1136 | ||
1137 | module_init(pdc_ata_init); | |
1138 | module_exit(pdc_ata_exit); |