Commit | Line | Data |
---|---|---|
669a5db4 JG |
1 | /* |
2 | * pata_pdc202xx_old.c - Promise PDC202xx PATA for new ATA layer | |
3 | * (C) 2005 Red Hat Inc | |
ab771630 | 4 | * Alan Cox <alan@lxorguk.ukuu.org.uk> |
a75032e8 | 5 | * (C) 2007,2009,2010 Bartlomiej Zolnierkiewicz |
669a5db4 JG |
6 | * |
7 | * Based in part on linux/drivers/ide/pci/pdc202xx_old.c | |
8 | * | |
9 | * First cut with LBA48/ATAPI | |
10 | * | |
11 | * TODO: | |
06b74dd2 | 12 | * Channel interlock/reset on both required ? |
669a5db4 | 13 | */ |
85cd7251 | 14 | |
669a5db4 JG |
15 | #include <linux/kernel.h> |
16 | #include <linux/module.h> | |
17 | #include <linux/pci.h> | |
18 | #include <linux/init.h> | |
19 | #include <linux/blkdev.h> | |
20 | #include <linux/delay.h> | |
21 | #include <scsi/scsi_host.h> | |
22 | #include <linux/libata.h> | |
23 | ||
24 | #define DRV_NAME "pata_pdc202xx_old" | |
06b74dd2 | 25 | #define DRV_VERSION "0.4.3" |
669a5db4 | 26 | |
a0fcdc02 | 27 | static int pdc2026x_cable_detect(struct ata_port *ap) |
669a5db4 JG |
28 | { |
29 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
30 | u16 cis; | |
85cd7251 | 31 | |
669a5db4 JG |
32 | pci_read_config_word(pdev, 0x50, &cis); |
33 | if (cis & (1 << (10 + ap->port_no))) | |
a0ac38f1 AC |
34 | return ATA_CBL_PATA40; |
35 | return ATA_CBL_PATA80; | |
669a5db4 JG |
36 | } |
37 | ||
750e519d | 38 | static void pdc202xx_exec_command(struct ata_port *ap, |
a75032e8 BZ |
39 | const struct ata_taskfile *tf) |
40 | { | |
41 | DPRINTK("ata%u: cmd 0x%X\n", ap->print_id, tf->command); | |
42 | ||
43 | iowrite8(tf->command, ap->ioaddr.command_addr); | |
44 | ndelay(400); | |
45 | } | |
46 | ||
669a5db4 | 47 | /** |
ada406c8 | 48 | * pdc202xx_configure_piomode - set chip PIO timing |
669a5db4 JG |
49 | * @ap: ATA interface |
50 | * @adev: ATA device | |
51 | * @pio: PIO mode | |
52 | * | |
53 | * Called to do the PIO mode setup. Our timing registers are shared | |
54 | * so a configure_dmamode call will undo any work we do here and vice | |
55 | * versa | |
56 | */ | |
85cd7251 | 57 | |
ada406c8 | 58 | static void pdc202xx_configure_piomode(struct ata_port *ap, struct ata_device *adev, int pio) |
669a5db4 JG |
59 | { |
60 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
63ed7101 | 61 | int port = 0x60 + 8 * ap->port_no + 4 * adev->devno; |
669a5db4 JG |
62 | static u16 pio_timing[5] = { |
63 | 0x0913, 0x050C , 0x0308, 0x0206, 0x0104 | |
64 | }; | |
65 | u8 r_ap, r_bp; | |
66 | ||
67 | pci_read_config_byte(pdev, port, &r_ap); | |
68 | pci_read_config_byte(pdev, port + 1, &r_bp); | |
69 | r_ap &= ~0x3F; /* Preserve ERRDY_EN, SYNC_IN */ | |
63ed7101 | 70 | r_bp &= ~0x1F; |
669a5db4 JG |
71 | r_ap |= (pio_timing[pio] >> 8); |
72 | r_bp |= (pio_timing[pio] & 0xFF); | |
85cd7251 | 73 | |
669a5db4 JG |
74 | if (ata_pio_need_iordy(adev)) |
75 | r_ap |= 0x20; /* IORDY enable */ | |
76 | if (adev->class == ATA_DEV_ATA) | |
77 | r_ap |= 0x10; /* FIFO enable */ | |
78 | pci_write_config_byte(pdev, port, r_ap); | |
79 | pci_write_config_byte(pdev, port + 1, r_bp); | |
80 | } | |
81 | ||
82 | /** | |
ada406c8 | 83 | * pdc202xx_set_piomode - set initial PIO mode data |
669a5db4 JG |
84 | * @ap: ATA interface |
85 | * @adev: ATA device | |
86 | * | |
87 | * Called to do the PIO mode setup. Our timing registers are shared | |
88 | * but we want to set the PIO timing by default. | |
89 | */ | |
85cd7251 | 90 | |
ada406c8 | 91 | static void pdc202xx_set_piomode(struct ata_port *ap, struct ata_device *adev) |
669a5db4 | 92 | { |
ada406c8 | 93 | pdc202xx_configure_piomode(ap, adev, adev->pio_mode - XFER_PIO_0); |
669a5db4 JG |
94 | } |
95 | ||
96 | /** | |
ada406c8 | 97 | * pdc202xx_configure_dmamode - set DMA mode in chip |
669a5db4 JG |
98 | * @ap: ATA interface |
99 | * @adev: ATA device | |
100 | * | |
101 | * Load DMA cycle times into the chip ready for a DMA transfer | |
102 | * to occur. | |
103 | */ | |
85cd7251 | 104 | |
ada406c8 | 105 | static void pdc202xx_set_dmamode(struct ata_port *ap, struct ata_device *adev) |
669a5db4 JG |
106 | { |
107 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
63ed7101 | 108 | int port = 0x60 + 8 * ap->port_no + 4 * adev->devno; |
669a5db4 JG |
109 | static u8 udma_timing[6][2] = { |
110 | { 0x60, 0x03 }, /* 33 Mhz Clock */ | |
111 | { 0x40, 0x02 }, | |
112 | { 0x20, 0x01 }, | |
113 | { 0x40, 0x02 }, /* 66 Mhz Clock */ | |
114 | { 0x20, 0x01 }, | |
85cd7251 | 115 | { 0x20, 0x01 } |
669a5db4 | 116 | }; |
63ed7101 | 117 | static u8 mdma_timing[3][2] = { |
63ed7101 | 118 | { 0xe0, 0x0f }, |
06b74dd2 AC |
119 | { 0x60, 0x04 }, |
120 | { 0x60, 0x03 }, | |
63ed7101 | 121 | }; |
669a5db4 | 122 | u8 r_bp, r_cp; |
85cd7251 | 123 | |
669a5db4 JG |
124 | pci_read_config_byte(pdev, port + 1, &r_bp); |
125 | pci_read_config_byte(pdev, port + 2, &r_cp); | |
85cd7251 | 126 | |
63ed7101 | 127 | r_bp &= ~0xE0; |
669a5db4 | 128 | r_cp &= ~0x0F; |
85cd7251 | 129 | |
669a5db4 JG |
130 | if (adev->dma_mode >= XFER_UDMA_0) { |
131 | int speed = adev->dma_mode - XFER_UDMA_0; | |
132 | r_bp |= udma_timing[speed][0]; | |
133 | r_cp |= udma_timing[speed][1]; | |
85cd7251 | 134 | |
669a5db4 JG |
135 | } else { |
136 | int speed = adev->dma_mode - XFER_MW_DMA_0; | |
63ed7101 BZ |
137 | r_bp |= mdma_timing[speed][0]; |
138 | r_cp |= mdma_timing[speed][1]; | |
669a5db4 JG |
139 | } |
140 | pci_write_config_byte(pdev, port + 1, r_bp); | |
141 | pci_write_config_byte(pdev, port + 2, r_cp); | |
85cd7251 | 142 | |
669a5db4 JG |
143 | } |
144 | ||
145 | /** | |
146 | * pdc2026x_bmdma_start - DMA engine begin | |
147 | * @qc: ATA command | |
148 | * | |
149 | * In UDMA3 or higher we have to clock switch for the duration of the | |
150 | * DMA transfer sequence. | |
06b74dd2 AC |
151 | * |
152 | * Note: The host lock held by the libata layer protects | |
153 | * us from two channels both trying to set DMA bits at once | |
669a5db4 | 154 | */ |
85cd7251 | 155 | |
669a5db4 JG |
156 | static void pdc2026x_bmdma_start(struct ata_queued_cmd *qc) |
157 | { | |
158 | struct ata_port *ap = qc->ap; | |
159 | struct ata_device *adev = qc->dev; | |
160 | struct ata_taskfile *tf = &qc->tf; | |
161 | int sel66 = ap->port_no ? 0x08: 0x02; | |
162 | ||
0d5ff566 TH |
163 | void __iomem *master = ap->host->ports[0]->ioaddr.bmdma_addr; |
164 | void __iomem *clock = master + 0x11; | |
165 | void __iomem *atapi_reg = master + 0x20 + (4 * ap->port_no); | |
85cd7251 | 166 | |
669a5db4 | 167 | u32 len; |
85cd7251 | 168 | |
669a5db4 | 169 | /* Check we keep host level locking here */ |
6ad58b24 | 170 | if (adev->dma_mode > XFER_UDMA_2) |
0d5ff566 | 171 | iowrite8(ioread8(clock) | sel66, clock); |
669a5db4 | 172 | else |
0d5ff566 | 173 | iowrite8(ioread8(clock) & ~sel66, clock); |
669a5db4 | 174 | |
85cd7251 | 175 | /* The DMA clocks may have been trashed by a reset. FIXME: make conditional |
669a5db4 | 176 | and move to qc_issue ? */ |
ada406c8 | 177 | pdc202xx_set_dmamode(ap, qc->dev); |
669a5db4 JG |
178 | |
179 | /* Cases the state machine will not complete correctly without help */ | |
0dc36888 | 180 | if ((tf->flags & ATA_TFLAG_LBA48) || tf->protocol == ATAPI_PROT_DMA) { |
5e518810 | 181 | len = qc->nbytes / 2; |
85cd7251 | 182 | |
669a5db4 JG |
183 | if (tf->flags & ATA_TFLAG_WRITE) |
184 | len |= 0x06000000; | |
185 | else | |
186 | len |= 0x05000000; | |
85cd7251 | 187 | |
0d5ff566 | 188 | iowrite32(len, atapi_reg); |
669a5db4 | 189 | } |
85cd7251 JG |
190 | |
191 | /* Activate DMA */ | |
669a5db4 JG |
192 | ata_bmdma_start(qc); |
193 | } | |
194 | ||
195 | /** | |
196 | * pdc2026x_bmdma_end - DMA engine stop | |
197 | * @qc: ATA command | |
198 | * | |
199 | * After a DMA completes we need to put the clock back to 33MHz for | |
200 | * PIO timings. | |
06b74dd2 AC |
201 | * |
202 | * Note: The host lock held by the libata layer protects | |
203 | * us from two channels both trying to set DMA bits at once | |
669a5db4 | 204 | */ |
85cd7251 | 205 | |
669a5db4 JG |
206 | static void pdc2026x_bmdma_stop(struct ata_queued_cmd *qc) |
207 | { | |
208 | struct ata_port *ap = qc->ap; | |
209 | struct ata_device *adev = qc->dev; | |
210 | struct ata_taskfile *tf = &qc->tf; | |
85cd7251 | 211 | |
669a5db4 JG |
212 | int sel66 = ap->port_no ? 0x08: 0x02; |
213 | /* The clock bits are in the same register for both channels */ | |
0d5ff566 TH |
214 | void __iomem *master = ap->host->ports[0]->ioaddr.bmdma_addr; |
215 | void __iomem *clock = master + 0x11; | |
216 | void __iomem *atapi_reg = master + 0x20 + (4 * ap->port_no); | |
85cd7251 | 217 | |
669a5db4 | 218 | /* Cases the state machine will not complete correctly */ |
0dc36888 | 219 | if (tf->protocol == ATAPI_PROT_DMA || (tf->flags & ATA_TFLAG_LBA48)) { |
0d5ff566 TH |
220 | iowrite32(0, atapi_reg); |
221 | iowrite8(ioread8(clock) & ~sel66, clock); | |
669a5db4 | 222 | } |
669a5db4 | 223 | /* Flip back to 33Mhz for PIO */ |
6ad58b24 | 224 | if (adev->dma_mode > XFER_UDMA_2) |
0d5ff566 | 225 | iowrite8(ioread8(clock) & ~sel66, clock); |
669a5db4 | 226 | ata_bmdma_stop(qc); |
36906d9b | 227 | pdc202xx_set_piomode(ap, adev); |
669a5db4 JG |
228 | } |
229 | ||
230 | /** | |
231 | * pdc2026x_dev_config - device setup hook | |
669a5db4 JG |
232 | * @adev: newly found device |
233 | * | |
234 | * Perform chip specific early setup. We need to lock the transfer | |
235 | * sizes to 8bit to avoid making the state engine on the 2026x cards | |
236 | * barf. | |
237 | */ | |
85cd7251 | 238 | |
cd0d3bbc | 239 | static void pdc2026x_dev_config(struct ata_device *adev) |
669a5db4 JG |
240 | { |
241 | adev->max_sectors = 256; | |
242 | } | |
243 | ||
36906d9b AC |
244 | static int pdc2026x_port_start(struct ata_port *ap) |
245 | { | |
246 | void __iomem *bmdma = ap->ioaddr.bmdma_addr; | |
247 | if (bmdma) { | |
248 | /* Enable burst mode */ | |
249 | u8 burst = ioread8(bmdma + 0x1f); | |
250 | iowrite8(burst | 0x01, bmdma + 0x1f); | |
251 | } | |
c7087652 | 252 | return ata_bmdma_port_start(ap); |
36906d9b AC |
253 | } |
254 | ||
aa8f2371 AC |
255 | /** |
256 | * pdc2026x_check_atapi_dma - Check whether ATAPI DMA can be supported for this command | |
257 | * @qc: Metadata associated with taskfile to check | |
258 | * | |
259 | * Just say no - not supported on older Promise. | |
260 | * | |
261 | * LOCKING: | |
262 | * None (inherited from caller). | |
263 | * | |
264 | * RETURNS: 0 when ATAPI DMA can be used | |
265 | * 1 otherwise | |
266 | */ | |
267 | ||
268 | static int pdc2026x_check_atapi_dma(struct ata_queued_cmd *qc) | |
269 | { | |
270 | return 1; | |
271 | } | |
272 | ||
ada406c8 | 273 | static struct scsi_host_template pdc202xx_sht = { |
68d1d07b | 274 | ATA_BMDMA_SHT(DRV_NAME), |
669a5db4 JG |
275 | }; |
276 | ||
277 | static struct ata_port_operations pdc2024x_port_ops = { | |
029cfd6b TH |
278 | .inherits = &ata_bmdma_port_ops, |
279 | ||
280 | .cable_detect = ata_cable_40wire, | |
281 | .set_piomode = pdc202xx_set_piomode, | |
282 | .set_dmamode = pdc202xx_set_dmamode, | |
a75032e8 | 283 | |
750e519d | 284 | .sff_exec_command = pdc202xx_exec_command, |
85cd7251 | 285 | }; |
669a5db4 JG |
286 | |
287 | static struct ata_port_operations pdc2026x_port_ops = { | |
029cfd6b TH |
288 | .inherits = &pdc2024x_port_ops, |
289 | ||
290 | .check_atapi_dma = pdc2026x_check_atapi_dma, | |
291 | .bmdma_start = pdc2026x_bmdma_start, | |
292 | .bmdma_stop = pdc2026x_bmdma_stop, | |
293 | ||
294 | .cable_detect = pdc2026x_cable_detect, | |
295 | .dev_config = pdc2026x_dev_config, | |
296 | ||
297 | .port_start = pdc2026x_port_start, | |
750e519d BZ |
298 | |
299 | .sff_exec_command = pdc202xx_exec_command, | |
85cd7251 | 300 | }; |
669a5db4 | 301 | |
ada406c8 | 302 | static int pdc202xx_init_one(struct pci_dev *dev, const struct pci_device_id *id) |
669a5db4 | 303 | { |
1626aeb8 | 304 | static const struct ata_port_info info[3] = { |
669a5db4 | 305 | { |
1d2808fd | 306 | .flags = ATA_FLAG_SLAVE_POSS, |
14bdef98 EIB |
307 | .pio_mask = ATA_PIO4, |
308 | .mwdma_mask = ATA_MWDMA2, | |
669a5db4 JG |
309 | .udma_mask = ATA_UDMA2, |
310 | .port_ops = &pdc2024x_port_ops | |
85cd7251 | 311 | }, |
669a5db4 | 312 | { |
1d2808fd | 313 | .flags = ATA_FLAG_SLAVE_POSS, |
14bdef98 EIB |
314 | .pio_mask = ATA_PIO4, |
315 | .mwdma_mask = ATA_MWDMA2, | |
669a5db4 JG |
316 | .udma_mask = ATA_UDMA4, |
317 | .port_ops = &pdc2026x_port_ops | |
318 | }, | |
319 | { | |
1d2808fd | 320 | .flags = ATA_FLAG_SLAVE_POSS, |
14bdef98 EIB |
321 | .pio_mask = ATA_PIO4, |
322 | .mwdma_mask = ATA_MWDMA2, | |
669a5db4 JG |
323 | .udma_mask = ATA_UDMA5, |
324 | .port_ops = &pdc2026x_port_ops | |
325 | } | |
85cd7251 | 326 | |
669a5db4 | 327 | }; |
1626aeb8 | 328 | const struct ata_port_info *ppi[] = { &info[id->driver_data], NULL }; |
85cd7251 | 329 | |
669a5db4 JG |
330 | if (dev->device == PCI_DEVICE_ID_PROMISE_20265) { |
331 | struct pci_dev *bridge = dev->bus->self; | |
332 | /* Don't grab anything behind a Promise I2O RAID */ | |
333 | if (bridge && bridge->vendor == PCI_VENDOR_ID_INTEL) { | |
b447916e | 334 | if (bridge->device == PCI_DEVICE_ID_INTEL_I960) |
669a5db4 | 335 | return -ENODEV; |
b447916e | 336 | if (bridge->device == PCI_DEVICE_ID_INTEL_I960RM) |
669a5db4 JG |
337 | return -ENODEV; |
338 | } | |
339 | } | |
1c5afdf7 | 340 | return ata_pci_bmdma_init_one(dev, ppi, &pdc202xx_sht, NULL, 0); |
669a5db4 JG |
341 | } |
342 | ||
ada406c8 | 343 | static const struct pci_device_id pdc202xx[] = { |
2d2744fc JG |
344 | { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20246), 0 }, |
345 | { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20262), 1 }, | |
346 | { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20263), 1 }, | |
347 | { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20265), 2 }, | |
348 | { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20267), 2 }, | |
349 | ||
350 | { }, | |
669a5db4 JG |
351 | }; |
352 | ||
ada406c8 | 353 | static struct pci_driver pdc202xx_pci_driver = { |
2d2744fc | 354 | .name = DRV_NAME, |
ada406c8 AC |
355 | .id_table = pdc202xx, |
356 | .probe = pdc202xx_init_one, | |
62d64ae0 | 357 | .remove = ata_pci_remove_one, |
438ac6d5 | 358 | #ifdef CONFIG_PM |
62d64ae0 A |
359 | .suspend = ata_pci_device_suspend, |
360 | .resume = ata_pci_device_resume, | |
438ac6d5 | 361 | #endif |
669a5db4 JG |
362 | }; |
363 | ||
ada406c8 | 364 | static int __init pdc202xx_init(void) |
669a5db4 | 365 | { |
ada406c8 | 366 | return pci_register_driver(&pdc202xx_pci_driver); |
669a5db4 JG |
367 | } |
368 | ||
ada406c8 | 369 | static void __exit pdc202xx_exit(void) |
669a5db4 | 370 | { |
ada406c8 | 371 | pci_unregister_driver(&pdc202xx_pci_driver); |
669a5db4 JG |
372 | } |
373 | ||
669a5db4 JG |
374 | MODULE_AUTHOR("Alan Cox"); |
375 | MODULE_DESCRIPTION("low-level driver for Promise 2024x and 20262-20267"); | |
376 | MODULE_LICENSE("GPL"); | |
ada406c8 | 377 | MODULE_DEVICE_TABLE(pci, pdc202xx); |
669a5db4 JG |
378 | MODULE_VERSION(DRV_VERSION); |
379 | ||
ada406c8 AC |
380 | module_init(pdc202xx_init); |
381 | module_exit(pdc202xx_exit); |