Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 1 | /* |
Alan Cox | c343a83 | 2007-05-25 20:39:30 +0100 | [diff] [blame] | 2 | * pata_it821x.c - IT821x PATA for new ATA layer |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 3 | * (C) 2005 Red Hat Inc |
Alan Cox | ab77163 | 2008-10-27 15:09:10 +0000 | [diff] [blame] | 4 | * Alan Cox <alan@lxorguk.ukuu.org.uk> |
Bartlomiej Zolnierkiewicz | 374abf2 | 2007-06-11 11:40:07 +0200 | [diff] [blame] | 5 | * (C) 2007 Bartlomiej Zolnierkiewicz |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 6 | * |
| 7 | * based upon |
| 8 | * |
| 9 | * it821x.c |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 10 | * |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 11 | * linux/drivers/ide/pci/it821x.c Version 0.09 December 2004 |
| 12 | * |
Alan Cox | ab77163 | 2008-10-27 15:09:10 +0000 | [diff] [blame] | 13 | * Copyright (C) 2004 Red Hat |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 14 | * |
| 15 | * May be copied or modified under the terms of the GNU General Public License |
| 16 | * Based in part on the ITE vendor provided SCSI driver. |
| 17 | * |
| 18 | * Documentation available from |
| 19 | * http://www.ite.com.tw/pc/IT8212F_V04.pdf |
| 20 | * Some other documents are NDA. |
| 21 | * |
| 22 | * The ITE8212 isn't exactly a standard IDE controller. It has two |
| 23 | * modes. In pass through mode then it is an IDE controller. In its smart |
| 24 | * mode its actually quite a capable hardware raid controller disguised |
| 25 | * as an IDE controller. Smart mode only understands DMA read/write and |
| 26 | * identify, none of the fancier commands apply. The IT8211 is identical |
| 27 | * in other respects but lacks the raid mode. |
| 28 | * |
| 29 | * Errata: |
| 30 | * o Rev 0x10 also requires master/slave hold the same DMA timings and |
| 31 | * cannot do ATAPI MWDMA. |
| 32 | * o The identify data for raid volumes lacks CHS info (technically ok) |
| 33 | * but also fails to set the LBA28 and other bits. We fix these in |
| 34 | * the IDE probe quirk code. |
| 35 | * o If you write LBA48 sized I/O's (ie > 256 sector) in smart mode |
| 36 | * raid then the controller firmware dies |
| 37 | * o Smart mode without RAID doesn't clear all the necessary identify |
| 38 | * bits to reduce the command set to the one used |
| 39 | * |
| 40 | * This has a few impacts on the driver |
| 41 | * - In pass through mode we do all the work you would expect |
| 42 | * - In smart mode the clocking set up is done by the controller generally |
| 43 | * but we must watch the other limits and filter. |
| 44 | * - There are a few extra vendor commands that actually talk to the |
| 45 | * controller but only work PIO with no IRQ. |
| 46 | * |
| 47 | * Vendor areas of the identify block in smart mode are used for the |
| 48 | * timing and policy set up. Each HDD in raid mode also has a serial |
| 49 | * block on the disk. The hardware extra commands are get/set chip status, |
| 50 | * rebuild, get rebuild status. |
| 51 | * |
| 52 | * In Linux the driver supports pass through mode as if the device was |
| 53 | * just another IDE controller. If the smart mode is running then |
| 54 | * volumes are managed by the controller firmware and each IDE "disk" |
| 55 | * is a raid volume. Even more cute - the controller can do automated |
| 56 | * hotplug and rebuild. |
| 57 | * |
| 58 | * The pass through controller itself is a little demented. It has a |
| 59 | * flaw that it has a single set of PIO/MWDMA timings per channel so |
| 60 | * non UDMA devices restrict each others performance. It also has a |
| 61 | * single clock source per channel so mixed UDMA100/133 performance |
| 62 | * isn't perfect and we have to pick a clock. Thankfully none of this |
| 63 | * matters in smart mode. ATAPI DMA is not currently supported. |
| 64 | * |
| 65 | * It seems the smart mode is a win for RAID1/RAID10 but otherwise not. |
| 66 | * |
| 67 | * TODO |
| 68 | * - ATAPI and other speed filtering |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 69 | * - RAID configuration ioctls |
| 70 | */ |
| 71 | |
| 72 | #include <linux/kernel.h> |
| 73 | #include <linux/module.h> |
| 74 | #include <linux/pci.h> |
| 75 | #include <linux/init.h> |
| 76 | #include <linux/blkdev.h> |
| 77 | #include <linux/delay.h> |
| 78 | #include <scsi/scsi_host.h> |
| 79 | #include <linux/libata.h> |
| 80 | |
| 81 | |
| 82 | #define DRV_NAME "pata_it821x" |
Alan Cox | 4a99d95 | 2009-01-11 19:51:08 +0000 | [diff] [blame] | 83 | #define DRV_VERSION "0.4.2" |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 84 | |
| 85 | struct it821x_dev |
| 86 | { |
| 87 | unsigned int smart:1, /* Are we in smart raid mode */ |
| 88 | timing10:1; /* Rev 0x10 */ |
| 89 | u8 clock_mode; /* 0, ATA_50 or ATA_66 */ |
| 90 | u8 want[2][2]; /* Mode/Pri log for master slave */ |
| 91 | /* We need these for switching the clock when DMA goes on/off |
| 92 | The high byte is the 66Mhz timing */ |
| 93 | u16 pio[2]; /* Cached PIO values */ |
| 94 | u16 mwdma[2]; /* Cached MWDMA values */ |
| 95 | u16 udma[2]; /* Cached UDMA values (per drive) */ |
| 96 | u16 last_device; /* Master or slave loaded ? */ |
| 97 | }; |
| 98 | |
| 99 | #define ATA_66 0 |
| 100 | #define ATA_50 1 |
| 101 | #define ATA_ANY 2 |
| 102 | |
| 103 | #define UDMA_OFF 0 |
| 104 | #define MWDMA_OFF 0 |
| 105 | |
| 106 | /* |
| 107 | * We allow users to force the card into non raid mode without |
Robert P. J. Day | 3a4fa0a | 2007-10-19 23:10:43 +0200 | [diff] [blame] | 108 | * flashing the alternative BIOS. This is also necessary right now |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 109 | * for embedded platforms that cannot run a PC BIOS but are using this |
| 110 | * device. |
| 111 | */ |
| 112 | |
| 113 | static int it8212_noraid; |
| 114 | |
| 115 | /** |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 116 | * it821x_program - program the PIO/MWDMA registers |
| 117 | * @ap: ATA port |
| 118 | * @adev: Device to program |
| 119 | * @timing: Timing value (66Mhz in top 8bits, 50 in the low 8) |
| 120 | * |
| 121 | * Program the PIO/MWDMA timing for this channel according to the |
| 122 | * current clock. These share the same register so are managed by |
| 123 | * the DMA start/stop sequence as with the old driver. |
| 124 | */ |
| 125 | |
| 126 | static void it821x_program(struct ata_port *ap, struct ata_device *adev, u16 timing) |
| 127 | { |
| 128 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); |
| 129 | struct it821x_dev *itdev = ap->private_data; |
| 130 | int channel = ap->port_no; |
| 131 | u8 conf; |
| 132 | |
| 133 | /* Program PIO/MWDMA timing bits */ |
| 134 | if (itdev->clock_mode == ATA_66) |
| 135 | conf = timing >> 8; |
| 136 | else |
| 137 | conf = timing & 0xFF; |
| 138 | pci_write_config_byte(pdev, 0x54 + 4 * channel, conf); |
| 139 | } |
| 140 | |
| 141 | |
| 142 | /** |
| 143 | * it821x_program_udma - program the UDMA registers |
| 144 | * @ap: ATA port |
| 145 | * @adev: ATA device to update |
| 146 | * @timing: Timing bits. Top 8 are for 66Mhz bottom for 50Mhz |
| 147 | * |
| 148 | * Program the UDMA timing for this drive according to the |
| 149 | * current clock. Handles the dual clocks and also knows about |
| 150 | * the errata on the 0x10 revision. The UDMA errata is partly handled |
| 151 | * here and partly in start_dma. |
| 152 | */ |
| 153 | |
| 154 | static void it821x_program_udma(struct ata_port *ap, struct ata_device *adev, u16 timing) |
| 155 | { |
| 156 | struct it821x_dev *itdev = ap->private_data; |
| 157 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); |
| 158 | int channel = ap->port_no; |
| 159 | int unit = adev->devno; |
| 160 | u8 conf; |
| 161 | |
| 162 | /* Program UDMA timing bits */ |
| 163 | if (itdev->clock_mode == ATA_66) |
| 164 | conf = timing >> 8; |
| 165 | else |
| 166 | conf = timing & 0xFF; |
| 167 | if (itdev->timing10 == 0) |
| 168 | pci_write_config_byte(pdev, 0x56 + 4 * channel + unit, conf); |
| 169 | else { |
| 170 | /* Early revision must be programmed for both together */ |
| 171 | pci_write_config_byte(pdev, 0x56 + 4 * channel, conf); |
| 172 | pci_write_config_byte(pdev, 0x56 + 4 * channel + 1, conf); |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | /** |
| 177 | * it821x_clock_strategy |
| 178 | * @ap: ATA interface |
| 179 | * @adev: ATA device being updated |
| 180 | * |
| 181 | * Select between the 50 and 66Mhz base clocks to get the best |
| 182 | * results for this interface. |
| 183 | */ |
| 184 | |
| 185 | static void it821x_clock_strategy(struct ata_port *ap, struct ata_device *adev) |
| 186 | { |
| 187 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); |
| 188 | struct it821x_dev *itdev = ap->private_data; |
| 189 | u8 unit = adev->devno; |
| 190 | struct ata_device *pair = ata_dev_pair(adev); |
| 191 | |
| 192 | int clock, altclock; |
| 193 | u8 v; |
| 194 | int sel = 0; |
| 195 | |
| 196 | /* Look for the most wanted clocking */ |
| 197 | if (itdev->want[0][0] > itdev->want[1][0]) { |
| 198 | clock = itdev->want[0][1]; |
| 199 | altclock = itdev->want[1][1]; |
| 200 | } else { |
| 201 | clock = itdev->want[1][1]; |
| 202 | altclock = itdev->want[0][1]; |
| 203 | } |
| 204 | |
| 205 | /* Master doesn't care does the slave ? */ |
| 206 | if (clock == ATA_ANY) |
| 207 | clock = altclock; |
| 208 | |
| 209 | /* Nobody cares - keep the same clock */ |
| 210 | if (clock == ATA_ANY) |
| 211 | return; |
| 212 | /* No change */ |
| 213 | if (clock == itdev->clock_mode) |
| 214 | return; |
| 215 | |
| 216 | /* Load this into the controller */ |
| 217 | if (clock == ATA_66) |
| 218 | itdev->clock_mode = ATA_66; |
| 219 | else { |
| 220 | itdev->clock_mode = ATA_50; |
| 221 | sel = 1; |
| 222 | } |
| 223 | pci_read_config_byte(pdev, 0x50, &v); |
| 224 | v &= ~(1 << (1 + ap->port_no)); |
| 225 | v |= sel << (1 + ap->port_no); |
| 226 | pci_write_config_byte(pdev, 0x50, v); |
| 227 | |
| 228 | /* |
| 229 | * Reprogram the UDMA/PIO of the pair drive for the switch |
| 230 | * MWDMA will be dealt with by the dma switcher |
| 231 | */ |
| 232 | if (pair && itdev->udma[1-unit] != UDMA_OFF) { |
| 233 | it821x_program_udma(ap, pair, itdev->udma[1-unit]); |
| 234 | it821x_program(ap, pair, itdev->pio[1-unit]); |
| 235 | } |
| 236 | /* |
| 237 | * Reprogram the UDMA/PIO of our drive for the switch. |
| 238 | * MWDMA will be dealt with by the dma switcher |
| 239 | */ |
| 240 | if (itdev->udma[unit] != UDMA_OFF) { |
| 241 | it821x_program_udma(ap, adev, itdev->udma[unit]); |
| 242 | it821x_program(ap, adev, itdev->pio[unit]); |
| 243 | } |
| 244 | } |
| 245 | |
| 246 | /** |
| 247 | * it821x_passthru_set_piomode - set PIO mode data |
| 248 | * @ap: ATA interface |
| 249 | * @adev: ATA device |
| 250 | * |
| 251 | * Configure for PIO mode. This is complicated as the register is |
| 252 | * shared by PIO and MWDMA and for both channels. |
| 253 | */ |
| 254 | |
| 255 | static void it821x_passthru_set_piomode(struct ata_port *ap, struct ata_device *adev) |
| 256 | { |
| 257 | /* Spec says 89 ref driver uses 88 */ |
| 258 | static const u16 pio[] = { 0xAA88, 0xA382, 0xA181, 0x3332, 0x3121 }; |
| 259 | static const u8 pio_want[] = { ATA_66, ATA_66, ATA_66, ATA_66, ATA_ANY }; |
| 260 | |
| 261 | struct it821x_dev *itdev = ap->private_data; |
| 262 | int unit = adev->devno; |
| 263 | int mode_wanted = adev->pio_mode - XFER_PIO_0; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 264 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 265 | /* We prefer 66Mhz clock for PIO 0-3, don't care for PIO4 */ |
| 266 | itdev->want[unit][1] = pio_want[mode_wanted]; |
| 267 | itdev->want[unit][0] = 1; /* PIO is lowest priority */ |
| 268 | itdev->pio[unit] = pio[mode_wanted]; |
| 269 | it821x_clock_strategy(ap, adev); |
| 270 | it821x_program(ap, adev, itdev->pio[unit]); |
| 271 | } |
| 272 | |
| 273 | /** |
| 274 | * it821x_passthru_set_dmamode - set initial DMA mode data |
| 275 | * @ap: ATA interface |
| 276 | * @adev: ATA device |
| 277 | * |
| 278 | * Set up the DMA modes. The actions taken depend heavily on the mode |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 279 | * to use. If UDMA is used as is hopefully the usual case then the |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 280 | * timing register is private and we need only consider the clock. If |
| 281 | * we are using MWDMA then we have to manage the setting ourself as |
| 282 | * we switch devices and mode. |
| 283 | */ |
| 284 | |
| 285 | static void it821x_passthru_set_dmamode(struct ata_port *ap, struct ata_device *adev) |
| 286 | { |
| 287 | static const u16 dma[] = { 0x8866, 0x3222, 0x3121 }; |
| 288 | static const u8 mwdma_want[] = { ATA_ANY, ATA_66, ATA_ANY }; |
| 289 | static const u16 udma[] = { 0x4433, 0x4231, 0x3121, 0x2121, 0x1111, 0x2211, 0x1111 }; |
| 290 | static const u8 udma_want[] = { ATA_ANY, ATA_50, ATA_ANY, ATA_66, ATA_66, ATA_50, ATA_66 }; |
| 291 | |
| 292 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); |
| 293 | struct it821x_dev *itdev = ap->private_data; |
| 294 | int channel = ap->port_no; |
| 295 | int unit = adev->devno; |
| 296 | u8 conf; |
| 297 | |
| 298 | if (adev->dma_mode >= XFER_UDMA_0) { |
| 299 | int mode_wanted = adev->dma_mode - XFER_UDMA_0; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 300 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 301 | itdev->want[unit][1] = udma_want[mode_wanted]; |
| 302 | itdev->want[unit][0] = 3; /* UDMA is high priority */ |
| 303 | itdev->mwdma[unit] = MWDMA_OFF; |
| 304 | itdev->udma[unit] = udma[mode_wanted]; |
| 305 | if (mode_wanted >= 5) |
| 306 | itdev->udma[unit] |= 0x8080; /* UDMA 5/6 select on */ |
| 307 | |
| 308 | /* UDMA on. Again revision 0x10 must do the pair */ |
| 309 | pci_read_config_byte(pdev, 0x50, &conf); |
| 310 | if (itdev->timing10) |
| 311 | conf &= channel ? 0x9F: 0xE7; |
| 312 | else |
| 313 | conf &= ~ (1 << (3 + 2 * channel + unit)); |
| 314 | pci_write_config_byte(pdev, 0x50, conf); |
| 315 | it821x_clock_strategy(ap, adev); |
| 316 | it821x_program_udma(ap, adev, itdev->udma[unit]); |
| 317 | } else { |
| 318 | int mode_wanted = adev->dma_mode - XFER_MW_DMA_0; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 319 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 320 | itdev->want[unit][1] = mwdma_want[mode_wanted]; |
| 321 | itdev->want[unit][0] = 2; /* MWDMA is low priority */ |
| 322 | itdev->mwdma[unit] = dma[mode_wanted]; |
| 323 | itdev->udma[unit] = UDMA_OFF; |
| 324 | |
| 325 | /* UDMA bits off - Revision 0x10 do them in pairs */ |
| 326 | pci_read_config_byte(pdev, 0x50, &conf); |
| 327 | if (itdev->timing10) |
| 328 | conf |= channel ? 0x60: 0x18; |
| 329 | else |
| 330 | conf |= 1 << (3 + 2 * channel + unit); |
| 331 | pci_write_config_byte(pdev, 0x50, conf); |
| 332 | it821x_clock_strategy(ap, adev); |
| 333 | } |
| 334 | } |
| 335 | |
| 336 | /** |
| 337 | * it821x_passthru_dma_start - DMA start callback |
| 338 | * @qc: Command in progress |
| 339 | * |
| 340 | * Usually drivers set the DMA timing at the point the set_dmamode call |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 341 | * is made. IT821x however requires we load new timings on the |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 342 | * transitions in some cases. |
| 343 | */ |
| 344 | |
| 345 | static void it821x_passthru_bmdma_start(struct ata_queued_cmd *qc) |
| 346 | { |
| 347 | struct ata_port *ap = qc->ap; |
| 348 | struct ata_device *adev = qc->dev; |
| 349 | struct it821x_dev *itdev = ap->private_data; |
| 350 | int unit = adev->devno; |
| 351 | |
| 352 | if (itdev->mwdma[unit] != MWDMA_OFF) |
| 353 | it821x_program(ap, adev, itdev->mwdma[unit]); |
| 354 | else if (itdev->udma[unit] != UDMA_OFF && itdev->timing10) |
| 355 | it821x_program_udma(ap, adev, itdev->udma[unit]); |
| 356 | ata_bmdma_start(qc); |
| 357 | } |
| 358 | |
| 359 | /** |
| 360 | * it821x_passthru_dma_stop - DMA stop callback |
| 361 | * @qc: ATA command |
| 362 | * |
| 363 | * We loaded new timings in dma_start, as a result we need to restore |
| 364 | * the PIO timings in dma_stop so that the next command issue gets the |
| 365 | * right clock values. |
| 366 | */ |
| 367 | |
| 368 | static void it821x_passthru_bmdma_stop(struct ata_queued_cmd *qc) |
| 369 | { |
| 370 | struct ata_port *ap = qc->ap; |
| 371 | struct ata_device *adev = qc->dev; |
| 372 | struct it821x_dev *itdev = ap->private_data; |
| 373 | int unit = adev->devno; |
| 374 | |
| 375 | ata_bmdma_stop(qc); |
| 376 | if (itdev->mwdma[unit] != MWDMA_OFF) |
| 377 | it821x_program(ap, adev, itdev->pio[unit]); |
| 378 | } |
| 379 | |
| 380 | |
| 381 | /** |
| 382 | * it821x_passthru_dev_select - Select master/slave |
| 383 | * @ap: ATA port |
| 384 | * @device: Device number (not pointer) |
| 385 | * |
Robert P. J. Day | 3a4fa0a | 2007-10-19 23:10:43 +0200 | [diff] [blame] | 386 | * Device selection hook. If necessary perform clock switching |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 387 | */ |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 388 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 389 | static void it821x_passthru_dev_select(struct ata_port *ap, |
| 390 | unsigned int device) |
| 391 | { |
| 392 | struct it821x_dev *itdev = ap->private_data; |
| 393 | if (itdev && device != itdev->last_device) { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 394 | struct ata_device *adev = &ap->link.device[device]; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 395 | it821x_program(ap, adev, itdev->pio[adev->devno]); |
| 396 | itdev->last_device = device; |
| 397 | } |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 398 | ata_sff_dev_select(ap, device); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 399 | } |
| 400 | |
| 401 | /** |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 402 | * it821x_smart_qc_issue - wrap qc issue prot |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 403 | * @qc: command |
| 404 | * |
| 405 | * Wrap the command issue sequence for the IT821x. We need to |
| 406 | * perform out own device selection timing loads before the |
| 407 | * usual happenings kick off |
| 408 | */ |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 409 | |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 410 | static unsigned int it821x_smart_qc_issue(struct ata_queued_cmd *qc) |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 411 | { |
| 412 | switch(qc->tf.command) |
| 413 | { |
| 414 | /* Commands the firmware supports */ |
| 415 | case ATA_CMD_READ: |
| 416 | case ATA_CMD_READ_EXT: |
| 417 | case ATA_CMD_WRITE: |
| 418 | case ATA_CMD_WRITE_EXT: |
| 419 | case ATA_CMD_PIO_READ: |
| 420 | case ATA_CMD_PIO_READ_EXT: |
| 421 | case ATA_CMD_PIO_WRITE: |
| 422 | case ATA_CMD_PIO_WRITE_EXT: |
| 423 | case ATA_CMD_READ_MULTI: |
| 424 | case ATA_CMD_READ_MULTI_EXT: |
| 425 | case ATA_CMD_WRITE_MULTI: |
| 426 | case ATA_CMD_WRITE_MULTI_EXT: |
| 427 | case ATA_CMD_ID_ATA: |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 428 | case ATA_CMD_INIT_DEV_PARAMS: |
| 429 | case 0xFC: /* Internal 'report rebuild state' */ |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 430 | /* Arguably should just no-op this one */ |
| 431 | case ATA_CMD_SET_FEATURES: |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 432 | return ata_sff_qc_issue(qc); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 433 | } |
| 434 | printk(KERN_DEBUG "it821x: can't process command 0x%02X\n", qc->tf.command); |
Alan Cox | c5038fc | 2007-10-25 14:21:16 +0100 | [diff] [blame] | 435 | return AC_ERR_DEV; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 436 | } |
| 437 | |
| 438 | /** |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 439 | * it821x_passthru_qc_issue - wrap qc issue prot |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 440 | * @qc: command |
| 441 | * |
| 442 | * Wrap the command issue sequence for the IT821x. We need to |
| 443 | * perform out own device selection timing loads before the |
| 444 | * usual happenings kick off |
| 445 | */ |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 446 | |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 447 | static unsigned int it821x_passthru_qc_issue(struct ata_queued_cmd *qc) |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 448 | { |
| 449 | it821x_passthru_dev_select(qc->ap, qc->dev->devno); |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 450 | return ata_sff_qc_issue(qc); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 451 | } |
| 452 | |
| 453 | /** |
| 454 | * it821x_smart_set_mode - mode setting |
Tejun Heo | 0260731 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 455 | * @link: interface to set up |
Alan | b229a7b | 2007-01-24 11:47:07 +0000 | [diff] [blame] | 456 | * @unused: device that failed (error only) |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 457 | * |
| 458 | * Use a non standard set_mode function. We don't want to be tuned. |
| 459 | * The BIOS configured everything. Our job is not to fiddle. We |
| 460 | * read the dma enabled bits from the PCI configuration of the device |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 461 | * and respect them. |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 462 | */ |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 463 | |
Tejun Heo | 0260731 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 464 | static int it821x_smart_set_mode(struct ata_link *link, struct ata_device **unused) |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 465 | { |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 466 | struct ata_device *dev; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 467 | |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 468 | ata_for_each_dev(dev, link, ENABLED) { |
| 469 | /* We don't really care */ |
| 470 | dev->pio_mode = XFER_PIO_0; |
| 471 | dev->dma_mode = XFER_MW_DMA_0; |
| 472 | /* We do need the right mode information for DMA or PIO |
| 473 | and this comes from the current configuration flags */ |
| 474 | if (ata_id_has_dma(dev->id)) { |
| 475 | ata_dev_printk(dev, KERN_INFO, "configured for DMA\n"); |
| 476 | dev->xfer_mode = XFER_MW_DMA_0; |
| 477 | dev->xfer_shift = ATA_SHIFT_MWDMA; |
| 478 | dev->flags &= ~ATA_DFLAG_PIO; |
| 479 | } else { |
| 480 | ata_dev_printk(dev, KERN_INFO, "configured for PIO\n"); |
| 481 | dev->xfer_mode = XFER_PIO_0; |
| 482 | dev->xfer_shift = ATA_SHIFT_PIO; |
| 483 | dev->flags |= ATA_DFLAG_PIO; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 484 | } |
| 485 | } |
Alan | b229a7b | 2007-01-24 11:47:07 +0000 | [diff] [blame] | 486 | return 0; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 487 | } |
| 488 | |
| 489 | /** |
| 490 | * it821x_dev_config - Called each device identify |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 491 | * @adev: Device that has just been identified |
| 492 | * |
| 493 | * Perform the initial setup needed for each device that is chip |
| 494 | * special. In our case we need to lock the sector count to avoid |
| 495 | * blowing the brains out of the firmware with large LBA48 requests |
| 496 | * |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 497 | */ |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 498 | |
Alan | cd0d3bb | 2007-03-02 00:56:15 +0000 | [diff] [blame] | 499 | static void it821x_dev_config(struct ata_device *adev) |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 500 | { |
Tejun Heo | 8bfa79f | 2007-01-02 20:19:40 +0900 | [diff] [blame] | 501 | unsigned char model_num[ATA_ID_PROD_LEN + 1]; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 502 | |
Tejun Heo | 8bfa79f | 2007-01-02 20:19:40 +0900 | [diff] [blame] | 503 | ata_id_c_string(adev->id, model_num, ATA_ID_PROD, sizeof(model_num)); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 504 | |
| 505 | if (adev->max_sectors > 255) |
| 506 | adev->max_sectors = 255; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 507 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 508 | if (strstr(model_num, "Integrated Technology Express")) { |
| 509 | /* RAID mode */ |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 510 | ata_dev_printk(adev, KERN_INFO, "%sRAID%d volume", |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 511 | adev->id[147]?"Bootable ":"", |
| 512 | adev->id[129]); |
| 513 | if (adev->id[129] != 1) |
| 514 | printk("(%dK stripe)", adev->id[146]); |
| 515 | printk(".\n"); |
| 516 | } |
Alan Cox | c5038fc | 2007-10-25 14:21:16 +0100 | [diff] [blame] | 517 | /* This is a controller firmware triggered funny, don't |
| 518 | report the drive faulty! */ |
| 519 | adev->horkage &= ~ATA_HORKAGE_DIAGNOSTIC; |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 520 | /* No HPA in 'smart' mode */ |
| 521 | adev->horkage |= ATA_HORKAGE_BROKEN_HPA; |
Alan Cox | c5038fc | 2007-10-25 14:21:16 +0100 | [diff] [blame] | 522 | } |
| 523 | |
| 524 | /** |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 525 | * it821x_read_id - Hack identify data up |
| 526 | * @adev: device to read |
| 527 | * @tf: proposed taskfile |
| 528 | * @id: buffer for returned ident data |
Alan Cox | c5038fc | 2007-10-25 14:21:16 +0100 | [diff] [blame] | 529 | * |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 530 | * Query the devices on this firmware driven port and slightly |
Alan Cox | c5038fc | 2007-10-25 14:21:16 +0100 | [diff] [blame] | 531 | * mash the identify data to stop us and common tools trying to |
| 532 | * use features not firmware supported. The firmware itself does |
| 533 | * some masking (eg SMART) but not enough. |
Alan Cox | c5038fc | 2007-10-25 14:21:16 +0100 | [diff] [blame] | 534 | */ |
| 535 | |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 536 | static unsigned int it821x_read_id(struct ata_device *adev, |
| 537 | struct ata_taskfile *tf, u16 *id) |
Alan Cox | c5038fc | 2007-10-25 14:21:16 +0100 | [diff] [blame] | 538 | { |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 539 | unsigned int err_mask; |
| 540 | unsigned char model_num[ATA_ID_PROD_LEN + 1]; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 541 | |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 542 | err_mask = ata_do_dev_read_id(adev, tf, id); |
| 543 | if (err_mask) |
| 544 | return err_mask; |
| 545 | ata_id_c_string(id, model_num, ATA_ID_PROD, sizeof(model_num)); |
| 546 | |
| 547 | id[83] &= ~(1 << 12); /* Cache flush is firmware handled */ |
| 548 | id[83] &= ~(1 << 13); /* Ditto for LBA48 flushes */ |
| 549 | id[84] &= ~(1 << 6); /* No FUA */ |
| 550 | id[85] &= ~(1 << 10); /* No HPA */ |
| 551 | id[76] = 0; /* No NCQ/AN etc */ |
| 552 | |
| 553 | if (strstr(model_num, "Integrated Technology Express")) { |
| 554 | /* Set feature bits the firmware neglects */ |
| 555 | id[49] |= 0x0300; /* LBA, DMA */ |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 556 | id[83] &= 0x7FFF; |
Ondrej Zary | 054e5f6 | 2008-10-26 18:10:19 -0400 | [diff] [blame] | 557 | id[83] |= 0x4400; /* Word 83 is valid and LBA48 */ |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 558 | id[86] |= 0x0400; /* LBA48 on */ |
| 559 | id[ATA_ID_MAJOR_VER] |= 0x1F; |
| 560 | } |
| 561 | return err_mask; |
| 562 | } |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 563 | |
| 564 | /** |
| 565 | * it821x_check_atapi_dma - ATAPI DMA handler |
| 566 | * @qc: Command we are about to issue |
| 567 | * |
| 568 | * Decide if this ATAPI command can be issued by DMA on this |
| 569 | * controller. Return 0 if it can be. |
| 570 | */ |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 571 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 572 | static int it821x_check_atapi_dma(struct ata_queued_cmd *qc) |
| 573 | { |
| 574 | struct ata_port *ap = qc->ap; |
| 575 | struct it821x_dev *itdev = ap->private_data; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 576 | |
Jeff Norden | bce7d5e | 2007-09-04 11:07:20 -0500 | [diff] [blame] | 577 | /* Only use dma for transfers to/from the media. */ |
Tejun Heo | b63b133 | 2008-03-18 17:56:12 +0900 | [diff] [blame] | 578 | if (ata_qc_raw_nbytes(qc) < 2048) |
Jeff Norden | bce7d5e | 2007-09-04 11:07:20 -0500 | [diff] [blame] | 579 | return -EOPNOTSUPP; |
| 580 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 581 | /* No ATAPI DMA in smart mode */ |
| 582 | if (itdev->smart) |
| 583 | return -EOPNOTSUPP; |
| 584 | /* No ATAPI DMA on rev 10 */ |
| 585 | if (itdev->timing10) |
| 586 | return -EOPNOTSUPP; |
| 587 | /* Cool */ |
| 588 | return 0; |
| 589 | } |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 590 | |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 591 | /** |
| 592 | * it821x_display_disk - display disk setup |
| 593 | * @n: Device number |
| 594 | * @buf: Buffer block from firmware |
| 595 | * |
| 596 | * Produce a nice informative display of the device setup as provided |
| 597 | * by the firmware. |
| 598 | */ |
| 599 | |
| 600 | static void it821x_display_disk(int n, u8 *buf) |
| 601 | { |
| 602 | unsigned char id[41]; |
| 603 | int mode = 0; |
Jeff Garzik | 4ef2818 | 2008-08-22 02:33:23 -0400 | [diff] [blame] | 604 | char *mtype = ""; |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 605 | char mbuf[8]; |
| 606 | char *cbl = "(40 wire cable)"; |
| 607 | |
| 608 | static const char *types[5] = { |
| 609 | "RAID0", "RAID1" "RAID 0+1", "JBOD", "DISK" |
| 610 | }; |
| 611 | |
| 612 | if (buf[52] > 4) /* No Disk */ |
| 613 | return; |
| 614 | |
| 615 | ata_id_c_string((u16 *)buf, id, 0, 41); |
| 616 | |
| 617 | if (buf[51]) { |
| 618 | mode = ffs(buf[51]); |
| 619 | mtype = "UDMA"; |
| 620 | } else if (buf[49]) { |
| 621 | mode = ffs(buf[49]); |
| 622 | mtype = "MWDMA"; |
| 623 | } |
| 624 | |
| 625 | if (buf[76]) |
| 626 | cbl = ""; |
| 627 | |
| 628 | if (mode) |
| 629 | snprintf(mbuf, 8, "%5s%d", mtype, mode - 1); |
| 630 | else |
| 631 | strcpy(mbuf, "PIO"); |
| 632 | if (buf[52] == 4) |
| 633 | printk(KERN_INFO "%d: %-6s %-8s %s %s\n", |
| 634 | n, mbuf, types[buf[52]], id, cbl); |
| 635 | else |
| 636 | printk(KERN_INFO "%d: %-6s %-8s Volume: %1d %s %s\n", |
| 637 | n, mbuf, types[buf[52]], buf[53], id, cbl); |
| 638 | if (buf[125] < 100) |
| 639 | printk(KERN_INFO "%d: Rebuilding: %d%%\n", n, buf[125]); |
| 640 | } |
| 641 | |
| 642 | /** |
| 643 | * it821x_firmware_command - issue firmware command |
| 644 | * @ap: IT821x port to interrogate |
| 645 | * @cmd: command |
| 646 | * @len: length |
| 647 | * |
| 648 | * Issue firmware commands expecting data back from the controller. We |
| 649 | * use this to issue commands that do not go via the normal paths. Other |
| 650 | * commands such as 0xFC can be issued normally. |
| 651 | */ |
| 652 | |
| 653 | static u8 *it821x_firmware_command(struct ata_port *ap, u8 cmd, int len) |
| 654 | { |
| 655 | u8 status; |
| 656 | int n = 0; |
| 657 | u16 *buf = kmalloc(len, GFP_KERNEL); |
| 658 | if (buf == NULL) { |
| 659 | printk(KERN_ERR "it821x_firmware_command: Out of memory\n"); |
| 660 | return NULL; |
| 661 | } |
| 662 | /* This isn't quite a normal ATA command as we are talking to the |
| 663 | firmware not the drives */ |
| 664 | ap->ctl |= ATA_NIEN; |
| 665 | iowrite8(ap->ctl, ap->ioaddr.ctl_addr); |
| 666 | ata_wait_idle(ap); |
| 667 | iowrite8(ATA_DEVICE_OBS, ap->ioaddr.device_addr); |
| 668 | iowrite8(cmd, ap->ioaddr.command_addr); |
| 669 | udelay(1); |
| 670 | /* This should be almost immediate but a little paranoia goes a long |
| 671 | way. */ |
| 672 | while(n++ < 10) { |
| 673 | status = ioread8(ap->ioaddr.status_addr); |
| 674 | if (status & ATA_ERR) { |
| 675 | kfree(buf); |
| 676 | printk(KERN_ERR "it821x_firmware_command: rejected\n"); |
| 677 | return NULL; |
| 678 | } |
| 679 | if (status & ATA_DRQ) { |
| 680 | ioread16_rep(ap->ioaddr.data_addr, buf, len/2); |
| 681 | return (u8 *)buf; |
| 682 | } |
| 683 | mdelay(1); |
| 684 | } |
| 685 | kfree(buf); |
| 686 | printk(KERN_ERR "it821x_firmware_command: timeout\n"); |
| 687 | return NULL; |
| 688 | } |
| 689 | |
| 690 | /** |
| 691 | * it821x_probe_firmware - firmware reporting/setup |
| 692 | * @ap: IT821x port being probed |
| 693 | * |
| 694 | * Probe the firmware of the controller by issuing firmware command |
| 695 | * 0xFA and analysing the returned data. |
| 696 | */ |
| 697 | |
| 698 | static void it821x_probe_firmware(struct ata_port *ap) |
| 699 | { |
| 700 | u8 *buf; |
| 701 | int i; |
| 702 | |
| 703 | /* This is a bit ugly as we can't just issue a task file to a device |
| 704 | as this is controller magic */ |
| 705 | |
| 706 | buf = it821x_firmware_command(ap, 0xFA, 512); |
| 707 | |
| 708 | if (buf != NULL) { |
| 709 | printk(KERN_INFO "pata_it821x: Firmware %02X/%02X/%02X%02X\n", |
| 710 | buf[505], |
| 711 | buf[506], |
| 712 | buf[507], |
| 713 | buf[508]); |
| 714 | for (i = 0; i < 4; i++) |
| 715 | it821x_display_disk(i, buf + 128 * i); |
| 716 | kfree(buf); |
| 717 | } |
| 718 | } |
| 719 | |
| 720 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 721 | |
| 722 | /** |
| 723 | * it821x_port_start - port setup |
| 724 | * @ap: ATA port being set up |
| 725 | * |
| 726 | * The it821x needs to maintain private data structures and also to |
| 727 | * use the standard PCI interface which lacks support for this |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 728 | * functionality. We instead set up the private data on the port |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 729 | * start hook, and tear it down on port stop |
| 730 | */ |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 731 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 732 | static int it821x_port_start(struct ata_port *ap) |
| 733 | { |
| 734 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); |
| 735 | struct it821x_dev *itdev; |
| 736 | u8 conf; |
| 737 | |
Alan Cox | 81ad183 | 2007-08-22 22:55:41 +0100 | [diff] [blame] | 738 | int ret = ata_sff_port_start(ap); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 739 | if (ret < 0) |
| 740 | return ret; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 741 | |
Tejun Heo | 24dc5f3 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 742 | itdev = devm_kzalloc(&pdev->dev, sizeof(struct it821x_dev), GFP_KERNEL); |
| 743 | if (itdev == NULL) |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 744 | return -ENOMEM; |
Tejun Heo | 24dc5f3 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 745 | ap->private_data = itdev; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 746 | |
| 747 | pci_read_config_byte(pdev, 0x50, &conf); |
| 748 | |
| 749 | if (conf & 1) { |
| 750 | itdev->smart = 1; |
| 751 | /* Long I/O's although allowed in LBA48 space cause the |
| 752 | onboard firmware to enter the twighlight zone */ |
| 753 | /* No ATAPI DMA in this mode either */ |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 754 | if (ap->port_no == 0) |
| 755 | it821x_probe_firmware(ap); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 756 | } |
| 757 | /* Pull the current clocks from 0x50 */ |
| 758 | if (conf & (1 << (1 + ap->port_no))) |
| 759 | itdev->clock_mode = ATA_50; |
| 760 | else |
| 761 | itdev->clock_mode = ATA_66; |
| 762 | |
| 763 | itdev->want[0][1] = ATA_ANY; |
| 764 | itdev->want[1][1] = ATA_ANY; |
| 765 | itdev->last_device = -1; |
| 766 | |
Alan Cox | 604de6e | 2007-08-23 20:18:55 +0100 | [diff] [blame] | 767 | if (pdev->revision == 0x10) { |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 768 | itdev->timing10 = 1; |
| 769 | /* Need to disable ATAPI DMA for this case */ |
| 770 | if (!itdev->smart) |
| 771 | printk(KERN_WARNING DRV_NAME": Revision 0x10, workarounds activated.\n"); |
| 772 | } |
| 773 | |
| 774 | return 0; |
| 775 | } |
| 776 | |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 777 | /** |
| 778 | * it821x_rdc_cable - Cable detect for RDC1010 |
| 779 | * @ap: port we are checking |
| 780 | * |
| 781 | * Return the RDC1010 cable type. Unlike the IT821x we know how to do |
| 782 | * this and can do host side cable detect |
| 783 | */ |
| 784 | |
| 785 | static int it821x_rdc_cable(struct ata_port *ap) |
| 786 | { |
| 787 | u16 r40; |
| 788 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); |
| 789 | |
| 790 | pci_read_config_word(pdev, 0x40, &r40); |
| 791 | if (r40 & (1 << (2 + ap->port_no))) |
| 792 | return ATA_CBL_PATA40; |
| 793 | return ATA_CBL_PATA80; |
| 794 | } |
| 795 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 796 | static struct scsi_host_template it821x_sht = { |
Tejun Heo | 68d1d07 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 797 | ATA_BMDMA_SHT(DRV_NAME), |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 798 | }; |
| 799 | |
| 800 | static struct ata_port_operations it821x_smart_port_ops = { |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 801 | .inherits = &ata_bmdma_port_ops, |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 802 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 803 | .check_atapi_dma= it821x_check_atapi_dma, |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 804 | .qc_issue = it821x_smart_qc_issue, |
Jeff Garzik | bda3028 | 2006-09-27 05:41:13 -0400 | [diff] [blame] | 805 | |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 806 | .cable_detect = ata_cable_80wire, |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 807 | .set_mode = it821x_smart_set_mode, |
| 808 | .dev_config = it821x_dev_config, |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 809 | .read_id = it821x_read_id, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 810 | |
| 811 | .port_start = it821x_port_start, |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 812 | }; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 813 | |
| 814 | static struct ata_port_operations it821x_passthru_port_ops = { |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 815 | .inherits = &ata_bmdma_port_ops, |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 816 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 817 | .check_atapi_dma= it821x_check_atapi_dma, |
Tejun Heo | 5682ed3 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 818 | .sff_dev_select = it821x_passthru_dev_select, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 819 | .bmdma_start = it821x_passthru_bmdma_start, |
| 820 | .bmdma_stop = it821x_passthru_bmdma_stop, |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 821 | .qc_issue = it821x_passthru_qc_issue, |
Jeff Garzik | bda3028 | 2006-09-27 05:41:13 -0400 | [diff] [blame] | 822 | |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 823 | .cable_detect = ata_cable_unknown, |
| 824 | .set_piomode = it821x_passthru_set_piomode, |
| 825 | .set_dmamode = it821x_passthru_set_dmamode, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 826 | |
| 827 | .port_start = it821x_port_start, |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 828 | }; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 829 | |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 830 | static struct ata_port_operations it821x_rdc_port_ops = { |
| 831 | .inherits = &ata_bmdma_port_ops, |
| 832 | |
| 833 | .check_atapi_dma= it821x_check_atapi_dma, |
| 834 | .sff_dev_select = it821x_passthru_dev_select, |
| 835 | .bmdma_start = it821x_passthru_bmdma_start, |
| 836 | .bmdma_stop = it821x_passthru_bmdma_stop, |
| 837 | .qc_issue = it821x_passthru_qc_issue, |
| 838 | |
| 839 | .cable_detect = it821x_rdc_cable, |
| 840 | .set_piomode = it821x_passthru_set_piomode, |
| 841 | .set_dmamode = it821x_passthru_set_dmamode, |
| 842 | |
| 843 | .port_start = it821x_port_start, |
| 844 | }; |
| 845 | |
Randy Dunlap | 112cc2b | 2007-06-25 10:42:22 -0700 | [diff] [blame] | 846 | static void it821x_disable_raid(struct pci_dev *pdev) |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 847 | { |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 848 | /* Neither the RDC nor the IT8211 */ |
| 849 | if (pdev->vendor != PCI_VENDOR_ID_ITE || |
| 850 | pdev->device != PCI_DEVICE_ID_ITE_8212) |
| 851 | return; |
| 852 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 853 | /* Reset local CPU, and set BIOS not ready */ |
| 854 | pci_write_config_byte(pdev, 0x5E, 0x01); |
| 855 | |
| 856 | /* Set to bypass mode, and reset PCI bus */ |
| 857 | pci_write_config_byte(pdev, 0x50, 0x00); |
| 858 | pci_write_config_word(pdev, PCI_COMMAND, |
| 859 | PCI_COMMAND_PARITY | PCI_COMMAND_IO | |
| 860 | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); |
| 861 | pci_write_config_word(pdev, 0x40, 0xA0F3); |
| 862 | |
| 863 | pci_write_config_dword(pdev,0x4C, 0x02040204); |
| 864 | pci_write_config_byte(pdev, 0x42, 0x36); |
| 865 | pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x20); |
| 866 | } |
| 867 | |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 868 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 869 | static int it821x_init_one(struct pci_dev *pdev, const struct pci_device_id *id) |
| 870 | { |
| 871 | u8 conf; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 872 | |
Tejun Heo | 1626aeb | 2007-05-04 12:43:58 +0200 | [diff] [blame] | 873 | static const struct ata_port_info info_smart = { |
Jeff Garzik | 1d2808f | 2007-05-28 06:59:48 -0400 | [diff] [blame] | 874 | .flags = ATA_FLAG_SLAVE_POSS, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 875 | .pio_mask = 0x1f, |
| 876 | .mwdma_mask = 0x07, |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 877 | .udma_mask = ATA_UDMA6, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 878 | .port_ops = &it821x_smart_port_ops |
| 879 | }; |
Tejun Heo | 1626aeb | 2007-05-04 12:43:58 +0200 | [diff] [blame] | 880 | static const struct ata_port_info info_passthru = { |
Jeff Garzik | 1d2808f | 2007-05-28 06:59:48 -0400 | [diff] [blame] | 881 | .flags = ATA_FLAG_SLAVE_POSS, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 882 | .pio_mask = 0x1f, |
| 883 | .mwdma_mask = 0x07, |
Jeff Garzik | bf6263a | 2007-07-09 12:16:50 -0400 | [diff] [blame] | 884 | .udma_mask = ATA_UDMA6, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 885 | .port_ops = &it821x_passthru_port_ops |
| 886 | }; |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 887 | static const struct ata_port_info info_rdc = { |
| 888 | .flags = ATA_FLAG_SLAVE_POSS, |
| 889 | .pio_mask = 0x1f, |
| 890 | .mwdma_mask = 0x07, |
Alan Cox | 4a99d95 | 2009-01-11 19:51:08 +0000 | [diff] [blame] | 891 | .udma_mask = ATA_UDMA6, |
| 892 | .port_ops = &it821x_rdc_port_ops |
| 893 | }; |
| 894 | static const struct ata_port_info info_rdc_11 = { |
| 895 | .flags = ATA_FLAG_SLAVE_POSS, |
| 896 | .pio_mask = 0x1f, |
| 897 | .mwdma_mask = 0x07, |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 898 | /* No UDMA */ |
| 899 | .port_ops = &it821x_rdc_port_ops |
| 900 | }; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 901 | |
Tejun Heo | 1626aeb | 2007-05-04 12:43:58 +0200 | [diff] [blame] | 902 | const struct ata_port_info *ppi[] = { NULL, NULL }; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 903 | static char *mode[2] = { "pass through", "smart" }; |
Tejun Heo | f08048e | 2008-03-25 12:22:47 +0900 | [diff] [blame] | 904 | int rc; |
| 905 | |
| 906 | rc = pcim_enable_device(pdev); |
| 907 | if (rc) |
| 908 | return rc; |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 909 | |
| 910 | if (pdev->vendor == PCI_VENDOR_ID_RDC) { |
Alan Cox | 4a99d95 | 2009-01-11 19:51:08 +0000 | [diff] [blame] | 911 | /* Deal with Vortex86SX */ |
| 912 | if (pdev->revision == 0x11) |
| 913 | ppi[0] = &info_rdc_11; |
| 914 | else |
| 915 | ppi[0] = &info_rdc; |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 916 | } else { |
| 917 | /* Force the card into bypass mode if so requested */ |
| 918 | if (it8212_noraid) { |
| 919 | printk(KERN_INFO DRV_NAME ": forcing bypass mode.\n"); |
| 920 | it821x_disable_raid(pdev); |
| 921 | } |
| 922 | pci_read_config_byte(pdev, 0x50, &conf); |
| 923 | conf &= 1; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 924 | |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 925 | printk(KERN_INFO DRV_NAME": controller in %s mode.\n", |
| 926 | mode[conf]); |
| 927 | if (conf == 0) |
| 928 | ppi[0] = &info_passthru; |
| 929 | else |
| 930 | ppi[0] = &info_smart; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 931 | } |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 932 | return ata_pci_sff_init_one(pdev, ppi, &it821x_sht, NULL); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 933 | } |
| 934 | |
Tejun Heo | 438ac6d | 2007-03-02 17:31:26 +0900 | [diff] [blame] | 935 | #ifdef CONFIG_PM |
Alan | f535d53 | 2006-11-27 16:14:36 +0000 | [diff] [blame] | 936 | static int it821x_reinit_one(struct pci_dev *pdev) |
| 937 | { |
Tejun Heo | f08048e | 2008-03-25 12:22:47 +0900 | [diff] [blame] | 938 | struct ata_host *host = dev_get_drvdata(&pdev->dev); |
| 939 | int rc; |
| 940 | |
| 941 | rc = ata_pci_device_do_resume(pdev); |
| 942 | if (rc) |
| 943 | return rc; |
Alan | f535d53 | 2006-11-27 16:14:36 +0000 | [diff] [blame] | 944 | /* Resume - turn raid back off if need be */ |
| 945 | if (it8212_noraid) |
| 946 | it821x_disable_raid(pdev); |
Tejun Heo | f08048e | 2008-03-25 12:22:47 +0900 | [diff] [blame] | 947 | ata_host_resume(host); |
| 948 | return rc; |
Alan | f535d53 | 2006-11-27 16:14:36 +0000 | [diff] [blame] | 949 | } |
Tejun Heo | 438ac6d | 2007-03-02 17:31:26 +0900 | [diff] [blame] | 950 | #endif |
Alan | f535d53 | 2006-11-27 16:14:36 +0000 | [diff] [blame] | 951 | |
Jeff Garzik | 2d2744f | 2006-09-28 20:21:59 -0400 | [diff] [blame] | 952 | static const struct pci_device_id it821x[] = { |
| 953 | { PCI_VDEVICE(ITE, PCI_DEVICE_ID_ITE_8211), }, |
| 954 | { PCI_VDEVICE(ITE, PCI_DEVICE_ID_ITE_8212), }, |
Alan Cox | 963e497 | 2008-07-24 17:16:06 +0100 | [diff] [blame] | 955 | { PCI_VDEVICE(RDC, 0x1010), }, |
Jeff Garzik | 2d2744f | 2006-09-28 20:21:59 -0400 | [diff] [blame] | 956 | |
| 957 | { }, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 958 | }; |
| 959 | |
| 960 | static struct pci_driver it821x_pci_driver = { |
Jeff Garzik | 2d2744f | 2006-09-28 20:21:59 -0400 | [diff] [blame] | 961 | .name = DRV_NAME, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 962 | .id_table = it821x, |
| 963 | .probe = it821x_init_one, |
Alan | f535d53 | 2006-11-27 16:14:36 +0000 | [diff] [blame] | 964 | .remove = ata_pci_remove_one, |
Tejun Heo | 438ac6d | 2007-03-02 17:31:26 +0900 | [diff] [blame] | 965 | #ifdef CONFIG_PM |
Alan | f535d53 | 2006-11-27 16:14:36 +0000 | [diff] [blame] | 966 | .suspend = ata_pci_device_suspend, |
| 967 | .resume = it821x_reinit_one, |
Tejun Heo | 438ac6d | 2007-03-02 17:31:26 +0900 | [diff] [blame] | 968 | #endif |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 969 | }; |
| 970 | |
| 971 | static int __init it821x_init(void) |
| 972 | { |
| 973 | return pci_register_driver(&it821x_pci_driver); |
| 974 | } |
| 975 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 976 | static void __exit it821x_exit(void) |
| 977 | { |
| 978 | pci_unregister_driver(&it821x_pci_driver); |
| 979 | } |
| 980 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 981 | MODULE_AUTHOR("Alan Cox"); |
| 982 | MODULE_DESCRIPTION("low-level driver for the IT8211/IT8212 IDE RAID controller"); |
| 983 | MODULE_LICENSE("GPL"); |
| 984 | MODULE_DEVICE_TABLE(pci, it821x); |
| 985 | MODULE_VERSION(DRV_VERSION); |
| 986 | |
| 987 | |
| 988 | module_param_named(noraid, it8212_noraid, int, S_IRUGO); |
Stas Sergeev | 5fe675e | 2007-06-20 22:42:13 +0400 | [diff] [blame] | 989 | MODULE_PARM_DESC(noraid, "Force card into bypass mode"); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 990 | |
| 991 | module_init(it821x_init); |
| 992 | module_exit(it821x_exit); |