Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 1 | /* |
| 2 | * linux/drivers/ide/mips/au1xxx-ide.c version 01.30.00 Aug. 02 2005 |
| 3 | * |
| 4 | * BRIEF MODULE DESCRIPTION |
| 5 | * AMD Alchemy Au1xxx IDE interface routines over the Static Bus |
| 6 | * |
| 7 | * Copyright (c) 2003-2005 AMD, Personal Connectivity Solutions |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify it under |
| 10 | * the terms of the GNU General Public License as published by the Free Software |
| 11 | * Foundation; either version 2 of the License, or (at your option) any later |
| 12 | * version. |
| 13 | * |
| 14 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| 15 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR |
| 17 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 18 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 19 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 20 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 21 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 22 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 23 | * POSSIBILITY OF SUCH DAMAGE. |
| 24 | * |
| 25 | * You should have received a copy of the GNU General Public License along with |
| 26 | * this program; if not, write to the Free Software Foundation, Inc., |
| 27 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 28 | * |
| 29 | * Note: for more information, please refer "AMD Alchemy Au1200/Au1550 IDE |
| 30 | * Interface and Linux Device Driver" Application Note. |
| 31 | */ |
| 32 | #undef REALLY_SLOW_IO /* most systems can safely undef this */ |
| 33 | |
| 34 | #include <linux/config.h> /* for CONFIG_BLK_DEV_IDEPCI */ |
| 35 | #include <linux/types.h> |
| 36 | #include <linux/module.h> |
| 37 | #include <linux/kernel.h> |
| 38 | #include <linux/delay.h> |
| 39 | #include <linux/timer.h> |
| 40 | #include <linux/mm.h> |
| 41 | #include <linux/ioport.h> |
| 42 | #include <linux/hdreg.h> |
| 43 | #include <linux/init.h> |
| 44 | #include <linux/ide.h> |
| 45 | #include <linux/sysdev.h> |
| 46 | |
| 47 | #include <linux/dma-mapping.h> |
| 48 | |
| 49 | #include <asm/io.h> |
| 50 | #include <asm/mach-au1x00/au1xxx.h> |
| 51 | #include <asm/mach-au1x00/au1xxx_dbdma.h> |
| 52 | |
| 53 | #if CONFIG_PM |
| 54 | #include <asm/mach-au1x00/au1xxx_pm.h> |
| 55 | #endif |
| 56 | |
| 57 | #include <asm/mach-au1x00/au1xxx_ide.h> |
| 58 | |
| 59 | #define DRV_NAME "au1200-ide" |
| 60 | #define DRV_VERSION "1.0" |
| 61 | #define DRV_AUTHOR "AMD PCS / Pete Popov <ppopov@embeddedalley.com>" |
| 62 | #define DRV_DESC "Au1200 IDE" |
| 63 | |
| 64 | static _auide_hwif auide_hwif; |
| 65 | static spinlock_t ide_tune_drive_spin_lock = SPIN_LOCK_UNLOCKED; |
| 66 | static spinlock_t ide_tune_chipset_spin_lock = SPIN_LOCK_UNLOCKED; |
| 67 | static int dbdma_init_done = 0; |
| 68 | |
| 69 | /* |
| 70 | * local I/O functions |
| 71 | */ |
| 72 | u8 auide_inb(unsigned long port) |
| 73 | { |
| 74 | return (au_readb(port)); |
| 75 | } |
| 76 | |
| 77 | u16 auide_inw(unsigned long port) |
| 78 | { |
| 79 | return (au_readw(port)); |
| 80 | } |
| 81 | |
| 82 | u32 auide_inl(unsigned long port) |
| 83 | { |
| 84 | return (au_readl(port)); |
| 85 | } |
| 86 | |
| 87 | void auide_insw(unsigned long port, void *addr, u32 count) |
| 88 | { |
| 89 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA) |
| 90 | |
| 91 | _auide_hwif *ahwif = &auide_hwif; |
| 92 | chan_tab_t *ctp; |
| 93 | au1x_ddma_desc_t *dp; |
| 94 | |
| 95 | if(!put_dest_flags(ahwif->rx_chan, (void*)addr, count << 1, |
| 96 | DDMA_FLAGS_NOIE)) { |
| 97 | printk(KERN_ERR "%s failed %d\n", __FUNCTION__, __LINE__); |
| 98 | return; |
| 99 | } |
| 100 | ctp = *((chan_tab_t **)ahwif->rx_chan); |
| 101 | dp = ctp->cur_ptr; |
| 102 | while (dp->dscr_cmd0 & DSCR_CMD0_V) |
| 103 | ; |
| 104 | ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp); |
| 105 | #else |
| 106 | while (count--) |
| 107 | { |
| 108 | *(u16 *)addr = au_readw(port); |
| 109 | addr +=2 ; |
| 110 | } |
| 111 | #endif |
| 112 | } |
| 113 | |
| 114 | void auide_insl(unsigned long port, void *addr, u32 count) |
| 115 | { |
| 116 | while (count--) |
| 117 | { |
| 118 | *(u32 *)addr = au_readl(port); |
| 119 | /* NOTE: For IDE interfaces over PCMCIA, |
| 120 | * 32-bit access does not work |
| 121 | */ |
| 122 | addr += 4; |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | void auide_outb(u8 addr, unsigned long port) |
| 127 | { |
| 128 | return (au_writeb(addr, port)); |
| 129 | } |
| 130 | |
| 131 | void auide_outbsync(ide_drive_t *drive, u8 addr, unsigned long port) |
| 132 | { |
| 133 | return (au_writeb(addr, port)); |
| 134 | } |
| 135 | |
| 136 | void auide_outw(u16 addr, unsigned long port) |
| 137 | { |
| 138 | return (au_writew(addr, port)); |
| 139 | } |
| 140 | |
| 141 | void auide_outl(u32 addr, unsigned long port) |
| 142 | { |
| 143 | return (au_writel(addr, port)); |
| 144 | } |
| 145 | |
| 146 | void auide_outsw(unsigned long port, void *addr, u32 count) |
| 147 | { |
| 148 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA) |
| 149 | _auide_hwif *ahwif = &auide_hwif; |
| 150 | chan_tab_t *ctp; |
| 151 | au1x_ddma_desc_t *dp; |
| 152 | |
| 153 | if(!put_source_flags(ahwif->tx_chan, (void*)addr, |
| 154 | count << 1, DDMA_FLAGS_NOIE)) { |
| 155 | printk(KERN_ERR "%s failed %d\n", __FUNCTION__, __LINE__); |
| 156 | return; |
| 157 | } |
| 158 | ctp = *((chan_tab_t **)ahwif->tx_chan); |
| 159 | dp = ctp->cur_ptr; |
| 160 | while (dp->dscr_cmd0 & DSCR_CMD0_V) |
| 161 | ; |
| 162 | ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp); |
| 163 | #else |
| 164 | while (count--) |
| 165 | { |
| 166 | au_writew(*(u16 *)addr, port); |
| 167 | addr += 2; |
| 168 | } |
| 169 | #endif |
| 170 | } |
| 171 | |
| 172 | void auide_outsl(unsigned long port, void *addr, u32 count) |
| 173 | { |
| 174 | while (count--) |
| 175 | { |
| 176 | au_writel(*(u32 *)addr, port); |
| 177 | /* NOTE: For IDE interfaces over PCMCIA, |
| 178 | * 32-bit access does not work |
| 179 | */ |
| 180 | addr += 4; |
| 181 | } |
| 182 | } |
| 183 | |
| 184 | static void auide_tune_drive(ide_drive_t *drive, byte pio) |
| 185 | { |
| 186 | int mem_sttime; |
| 187 | int mem_stcfg; |
| 188 | unsigned long flags; |
| 189 | u8 speed; |
| 190 | |
| 191 | /* get the best pio mode for the drive */ |
| 192 | pio = ide_get_best_pio_mode(drive, pio, 4, NULL); |
| 193 | |
| 194 | printk("%s: setting Au1XXX IDE to PIO mode%d\n", |
| 195 | drive->name, pio); |
| 196 | |
| 197 | spin_lock_irqsave(&ide_tune_drive_spin_lock, flags); |
| 198 | |
| 199 | mem_sttime = 0; |
| 200 | mem_stcfg = au_readl(MEM_STCFG2); |
| 201 | |
| 202 | /* set pio mode! */ |
| 203 | switch(pio) { |
| 204 | case 0: |
| 205 | /* set timing parameters for RCS2# */ |
| 206 | mem_sttime = SBC_IDE_PIO0_TWCS |
| 207 | | SBC_IDE_PIO0_TCSH |
| 208 | | SBC_IDE_PIO0_TCSOFF |
| 209 | | SBC_IDE_PIO0_TWP |
| 210 | | SBC_IDE_PIO0_TCSW |
| 211 | | SBC_IDE_PIO0_TPM |
| 212 | | SBC_IDE_PIO0_TA; |
| 213 | /* set configuration for RCS2# */ |
| 214 | mem_stcfg |= TS_MASK; |
| 215 | mem_stcfg &= ~TCSOE_MASK; |
| 216 | mem_stcfg &= ~TOECS_MASK; |
| 217 | mem_stcfg |= SBC_IDE_PIO0_TCSOE | SBC_IDE_PIO0_TOECS; |
| 218 | |
| 219 | au_writel(mem_sttime,MEM_STTIME2); |
| 220 | au_writel(mem_stcfg,MEM_STCFG2); |
| 221 | break; |
| 222 | |
| 223 | case 1: |
| 224 | /* set timing parameters for RCS2# */ |
| 225 | mem_sttime = SBC_IDE_PIO1_TWCS |
| 226 | | SBC_IDE_PIO1_TCSH |
| 227 | | SBC_IDE_PIO1_TCSOFF |
| 228 | | SBC_IDE_PIO1_TWP |
| 229 | | SBC_IDE_PIO1_TCSW |
| 230 | | SBC_IDE_PIO1_TPM |
| 231 | | SBC_IDE_PIO1_TA; |
| 232 | /* set configuration for RCS2# */ |
| 233 | mem_stcfg |= TS_MASK; |
| 234 | mem_stcfg &= ~TCSOE_MASK; |
| 235 | mem_stcfg &= ~TOECS_MASK; |
| 236 | mem_stcfg |= SBC_IDE_PIO1_TCSOE | SBC_IDE_PIO1_TOECS; |
| 237 | break; |
| 238 | |
| 239 | case 2: |
| 240 | /* set timing parameters for RCS2# */ |
| 241 | mem_sttime = SBC_IDE_PIO2_TWCS |
| 242 | | SBC_IDE_PIO2_TCSH |
| 243 | | SBC_IDE_PIO2_TCSOFF |
| 244 | | SBC_IDE_PIO2_TWP |
| 245 | | SBC_IDE_PIO2_TCSW |
| 246 | | SBC_IDE_PIO2_TPM |
| 247 | | SBC_IDE_PIO2_TA; |
| 248 | /* set configuration for RCS2# */ |
| 249 | mem_stcfg &= ~TS_MASK; |
| 250 | mem_stcfg &= ~TCSOE_MASK; |
| 251 | mem_stcfg &= ~TOECS_MASK; |
| 252 | mem_stcfg |= SBC_IDE_PIO2_TCSOE | SBC_IDE_PIO2_TOECS; |
| 253 | break; |
| 254 | |
| 255 | case 3: |
| 256 | /* set timing parameters for RCS2# */ |
| 257 | mem_sttime = SBC_IDE_PIO3_TWCS |
| 258 | | SBC_IDE_PIO3_TCSH |
| 259 | | SBC_IDE_PIO3_TCSOFF |
| 260 | | SBC_IDE_PIO3_TWP |
| 261 | | SBC_IDE_PIO3_TCSW |
| 262 | | SBC_IDE_PIO3_TPM |
| 263 | | SBC_IDE_PIO3_TA; |
| 264 | /* set configuration for RCS2# */ |
| 265 | mem_stcfg |= TS_MASK; |
| 266 | mem_stcfg &= ~TS_MASK; |
| 267 | mem_stcfg &= ~TCSOE_MASK; |
| 268 | mem_stcfg &= ~TOECS_MASK; |
| 269 | mem_stcfg |= SBC_IDE_PIO3_TCSOE | SBC_IDE_PIO3_TOECS; |
| 270 | |
| 271 | break; |
| 272 | |
| 273 | case 4: |
| 274 | /* set timing parameters for RCS2# */ |
| 275 | mem_sttime = SBC_IDE_PIO4_TWCS |
| 276 | | SBC_IDE_PIO4_TCSH |
| 277 | | SBC_IDE_PIO4_TCSOFF |
| 278 | | SBC_IDE_PIO4_TWP |
| 279 | | SBC_IDE_PIO4_TCSW |
| 280 | | SBC_IDE_PIO4_TPM |
| 281 | | SBC_IDE_PIO4_TA; |
| 282 | /* set configuration for RCS2# */ |
| 283 | mem_stcfg &= ~TS_MASK; |
| 284 | mem_stcfg &= ~TCSOE_MASK; |
| 285 | mem_stcfg &= ~TOECS_MASK; |
| 286 | mem_stcfg |= SBC_IDE_PIO4_TCSOE | SBC_IDE_PIO4_TOECS; |
| 287 | break; |
| 288 | } |
| 289 | |
| 290 | au_writel(mem_sttime,MEM_STTIME2); |
| 291 | au_writel(mem_stcfg,MEM_STCFG2); |
| 292 | |
| 293 | spin_unlock_irqrestore(&ide_tune_drive_spin_lock, flags); |
| 294 | |
| 295 | speed = pio + XFER_PIO_0; |
| 296 | ide_config_drive_speed(drive, speed); |
| 297 | } |
| 298 | |
| 299 | static int auide_tune_chipset (ide_drive_t *drive, u8 speed) |
| 300 | { |
| 301 | u8 mode = 0; |
| 302 | int mem_sttime; |
| 303 | int mem_stcfg; |
| 304 | unsigned long flags; |
| 305 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
| 306 | struct hd_driveid *id = drive->id; |
| 307 | |
| 308 | /* |
| 309 | * Now see what the current drive is capable of, |
| 310 | * selecting UDMA only if the mate said it was ok. |
| 311 | */ |
| 312 | if (id && (id->capability & 1) && drive->autodma && |
| 313 | !__ide_dma_bad_drive(drive)) { |
| 314 | if (!mode && (id->field_valid & 2) && (id->dma_mword & 7)) { |
| 315 | if (id->dma_mword & 4) |
| 316 | mode = XFER_MW_DMA_2; |
| 317 | else if (id->dma_mword & 2) |
| 318 | mode = XFER_MW_DMA_1; |
| 319 | else if (id->dma_mword & 1) |
| 320 | mode = XFER_MW_DMA_0; |
| 321 | } |
| 322 | } |
| 323 | #endif |
| 324 | |
| 325 | spin_lock_irqsave(&ide_tune_chipset_spin_lock, flags); |
| 326 | |
| 327 | mem_sttime = 0; |
| 328 | mem_stcfg = au_readl(MEM_STCFG2); |
| 329 | |
| 330 | switch(speed) { |
| 331 | case XFER_PIO_4: |
| 332 | case XFER_PIO_3: |
| 333 | case XFER_PIO_2: |
| 334 | case XFER_PIO_1: |
| 335 | case XFER_PIO_0: |
| 336 | auide_tune_drive(drive, (speed - XFER_PIO_0)); |
| 337 | break; |
| 338 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
| 339 | case XFER_MW_DMA_2: |
| 340 | /* set timing parameters for RCS2# */ |
| 341 | mem_sttime = SBC_IDE_MDMA2_TWCS |
| 342 | | SBC_IDE_MDMA2_TCSH |
| 343 | | SBC_IDE_MDMA2_TCSOFF |
| 344 | | SBC_IDE_MDMA2_TWP |
| 345 | | SBC_IDE_MDMA2_TCSW |
| 346 | | SBC_IDE_MDMA2_TPM |
| 347 | | SBC_IDE_MDMA2_TA; |
| 348 | /* set configuration for RCS2# */ |
| 349 | mem_stcfg &= ~TS_MASK; |
| 350 | mem_stcfg &= ~TCSOE_MASK; |
| 351 | mem_stcfg &= ~TOECS_MASK; |
| 352 | mem_stcfg |= SBC_IDE_MDMA2_TCSOE | SBC_IDE_MDMA2_TOECS; |
| 353 | |
| 354 | mode = XFER_MW_DMA_2; |
| 355 | break; |
| 356 | case XFER_MW_DMA_1: |
| 357 | /* set timing parameters for RCS2# */ |
| 358 | mem_sttime = SBC_IDE_MDMA1_TWCS |
| 359 | | SBC_IDE_MDMA1_TCSH |
| 360 | | SBC_IDE_MDMA1_TCSOFF |
| 361 | | SBC_IDE_MDMA1_TWP |
| 362 | | SBC_IDE_MDMA1_TCSW |
| 363 | | SBC_IDE_MDMA1_TPM |
| 364 | | SBC_IDE_MDMA1_TA; |
| 365 | /* set configuration for RCS2# */ |
| 366 | mem_stcfg &= ~TS_MASK; |
| 367 | mem_stcfg &= ~TCSOE_MASK; |
| 368 | mem_stcfg &= ~TOECS_MASK; |
| 369 | mem_stcfg |= SBC_IDE_MDMA1_TCSOE | SBC_IDE_MDMA1_TOECS; |
| 370 | |
| 371 | mode = XFER_MW_DMA_1; |
| 372 | break; |
| 373 | case XFER_MW_DMA_0: |
| 374 | /* set timing parameters for RCS2# */ |
| 375 | mem_sttime = SBC_IDE_MDMA0_TWCS |
| 376 | | SBC_IDE_MDMA0_TCSH |
| 377 | | SBC_IDE_MDMA0_TCSOFF |
| 378 | | SBC_IDE_MDMA0_TWP |
| 379 | | SBC_IDE_MDMA0_TCSW |
| 380 | | SBC_IDE_MDMA0_TPM |
| 381 | | SBC_IDE_MDMA0_TA; |
| 382 | /* set configuration for RCS2# */ |
| 383 | mem_stcfg |= TS_MASK; |
| 384 | mem_stcfg &= ~TCSOE_MASK; |
| 385 | mem_stcfg &= ~TOECS_MASK; |
| 386 | mem_stcfg |= SBC_IDE_MDMA0_TCSOE | SBC_IDE_MDMA0_TOECS; |
| 387 | |
| 388 | mode = XFER_MW_DMA_0; |
| 389 | break; |
| 390 | #endif |
| 391 | default: |
| 392 | return 1; |
| 393 | } |
| 394 | |
| 395 | /* |
| 396 | * Tell the drive to switch to the new mode; abort on failure. |
| 397 | */ |
| 398 | if (!mode || ide_config_drive_speed(drive, mode)) |
| 399 | { |
| 400 | return 1; /* failure */ |
| 401 | } |
| 402 | |
| 403 | |
| 404 | au_writel(mem_sttime,MEM_STTIME2); |
| 405 | au_writel(mem_stcfg,MEM_STCFG2); |
| 406 | |
| 407 | spin_unlock_irqrestore(&ide_tune_chipset_spin_lock, flags); |
| 408 | |
| 409 | return 0; |
| 410 | } |
| 411 | |
| 412 | /* |
| 413 | * Multi-Word DMA + DbDMA functions |
| 414 | */ |
| 415 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
| 416 | |
| 417 | static int in_drive_list(struct hd_driveid *id, |
| 418 | const struct drive_list_entry *drive_table) |
| 419 | { |
| 420 | for ( ; drive_table->id_model ; drive_table++){ |
| 421 | if ((!strcmp(drive_table->id_model, id->model)) && |
| 422 | ((strstr(drive_table->id_firmware, id->fw_rev)) || |
| 423 | (!strcmp(drive_table->id_firmware, "ALL"))) |
| 424 | ) |
| 425 | return 1; |
| 426 | } |
| 427 | return 0; |
| 428 | } |
| 429 | |
| 430 | static int auide_build_sglist(ide_drive_t *drive, struct request *rq) |
| 431 | { |
| 432 | ide_hwif_t *hwif = drive->hwif; |
| 433 | _auide_hwif *ahwif = (_auide_hwif*)hwif->hwif_data; |
| 434 | struct scatterlist *sg = hwif->sg_table; |
| 435 | |
| 436 | ide_map_sg(drive, rq); |
| 437 | |
| 438 | if (rq_data_dir(rq) == READ) |
| 439 | hwif->sg_dma_direction = DMA_FROM_DEVICE; |
| 440 | else |
| 441 | hwif->sg_dma_direction = DMA_TO_DEVICE; |
| 442 | |
| 443 | return dma_map_sg(ahwif->dev, sg, hwif->sg_nents, |
| 444 | hwif->sg_dma_direction); |
| 445 | } |
| 446 | |
| 447 | static int auide_build_dmatable(ide_drive_t *drive) |
| 448 | { |
| 449 | int i, iswrite, count = 0; |
| 450 | ide_hwif_t *hwif = HWIF(drive); |
| 451 | |
| 452 | struct request *rq = HWGROUP(drive)->rq; |
| 453 | |
| 454 | _auide_hwif *ahwif = (_auide_hwif*)hwif->hwif_data; |
| 455 | struct scatterlist *sg; |
| 456 | |
| 457 | iswrite = (rq_data_dir(rq) == WRITE); |
| 458 | /* Save for interrupt context */ |
| 459 | ahwif->drive = drive; |
| 460 | |
| 461 | /* Build sglist */ |
| 462 | hwif->sg_nents = i = auide_build_sglist(drive, rq); |
| 463 | |
| 464 | if (!i) |
| 465 | return 0; |
| 466 | |
| 467 | /* fill the descriptors */ |
| 468 | sg = hwif->sg_table; |
| 469 | while (i && sg_dma_len(sg)) { |
| 470 | u32 cur_addr; |
| 471 | u32 cur_len; |
| 472 | |
| 473 | cur_addr = sg_dma_address(sg); |
| 474 | cur_len = sg_dma_len(sg); |
| 475 | |
| 476 | while (cur_len) { |
| 477 | u32 flags = DDMA_FLAGS_NOIE; |
| 478 | unsigned int tc = (cur_len < 0xfe00)? cur_len: 0xfe00; |
| 479 | |
| 480 | if (++count >= PRD_ENTRIES) { |
| 481 | printk(KERN_WARNING "%s: DMA table too small\n", |
| 482 | drive->name); |
| 483 | goto use_pio_instead; |
| 484 | } |
| 485 | |
| 486 | /* Lets enable intr for the last descriptor only */ |
| 487 | if (1==i) |
| 488 | flags = DDMA_FLAGS_IE; |
| 489 | else |
| 490 | flags = DDMA_FLAGS_NOIE; |
| 491 | |
| 492 | if (iswrite) { |
| 493 | if(!put_source_flags(ahwif->tx_chan, |
| 494 | (void*)(page_address(sg->page) |
| 495 | + sg->offset), |
| 496 | tc, flags)) { |
| 497 | printk(KERN_ERR "%s failed %d\n", |
| 498 | __FUNCTION__, __LINE__); |
| 499 | } |
| 500 | } else |
| 501 | { |
| 502 | if(!put_dest_flags(ahwif->rx_chan, |
| 503 | (void*)(page_address(sg->page) |
| 504 | + sg->offset), |
| 505 | tc, flags)) { |
| 506 | printk(KERN_ERR "%s failed %d\n", |
| 507 | __FUNCTION__, __LINE__); |
| 508 | } |
| 509 | } |
| 510 | |
| 511 | cur_addr += tc; |
| 512 | cur_len -= tc; |
| 513 | } |
| 514 | sg++; |
| 515 | i--; |
| 516 | } |
| 517 | |
| 518 | if (count) |
| 519 | return 1; |
| 520 | |
| 521 | use_pio_instead: |
| 522 | dma_unmap_sg(ahwif->dev, |
| 523 | hwif->sg_table, |
| 524 | hwif->sg_nents, |
| 525 | hwif->sg_dma_direction); |
| 526 | |
| 527 | return 0; /* revert to PIO for this request */ |
| 528 | } |
| 529 | |
| 530 | static int auide_dma_end(ide_drive_t *drive) |
| 531 | { |
| 532 | ide_hwif_t *hwif = HWIF(drive); |
| 533 | _auide_hwif *ahwif = (_auide_hwif*)hwif->hwif_data; |
| 534 | |
| 535 | if (hwif->sg_nents) { |
| 536 | dma_unmap_sg(ahwif->dev, hwif->sg_table, hwif->sg_nents, |
| 537 | hwif->sg_dma_direction); |
| 538 | hwif->sg_nents = 0; |
| 539 | } |
| 540 | |
| 541 | return 0; |
| 542 | } |
| 543 | |
| 544 | static void auide_dma_start(ide_drive_t *drive ) |
| 545 | { |
| 546 | // printk("%s\n", __FUNCTION__); |
| 547 | } |
| 548 | |
| 549 | ide_startstop_t auide_dma_intr(ide_drive_t *drive) |
| 550 | { |
| 551 | //printk("%s\n", __FUNCTION__); |
| 552 | |
| 553 | u8 stat = 0, dma_stat = 0; |
| 554 | |
| 555 | dma_stat = HWIF(drive)->ide_dma_end(drive); |
| 556 | stat = HWIF(drive)->INB(IDE_STATUS_REG); /* get drive status */ |
| 557 | if (OK_STAT(stat,DRIVE_READY,drive->bad_wstat|DRQ_STAT)) { |
| 558 | if (!dma_stat) { |
| 559 | struct request *rq = HWGROUP(drive)->rq; |
| 560 | |
| 561 | ide_end_request(drive, 1, rq->nr_sectors); |
| 562 | return ide_stopped; |
| 563 | } |
| 564 | printk(KERN_ERR "%s: dma_intr: bad DMA status (dma_stat=%x)\n", |
| 565 | drive->name, dma_stat); |
| 566 | } |
| 567 | return ide_error(drive, "dma_intr", stat); |
| 568 | } |
| 569 | |
| 570 | static void auide_dma_exec_cmd(ide_drive_t *drive, u8 command) |
| 571 | { |
| 572 | //printk("%s\n", __FUNCTION__); |
| 573 | |
| 574 | /* issue cmd to drive */ |
| 575 | ide_execute_command(drive, command, &auide_dma_intr, |
| 576 | (2*WAIT_CMD), NULL); |
| 577 | } |
| 578 | |
| 579 | static int auide_dma_setup(ide_drive_t *drive) |
| 580 | { |
| 581 | // printk("%s\n", __FUNCTION__); |
| 582 | |
| 583 | if (drive->media != ide_disk) |
| 584 | return 1; |
| 585 | |
| 586 | if (!auide_build_dmatable(drive)) |
| 587 | /* try PIO instead of DMA */ |
| 588 | return 1; |
| 589 | |
| 590 | drive->waiting_for_dma = 1; |
| 591 | |
| 592 | return 0; |
| 593 | } |
| 594 | |
| 595 | static int auide_dma_check(ide_drive_t *drive) |
| 596 | { |
| 597 | // printk("%s\n", __FUNCTION__); |
| 598 | |
| 599 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
| 600 | if( !dbdma_init_done ){ |
| 601 | auide_hwif.white_list = in_drive_list(drive->id, |
| 602 | dma_white_list); |
| 603 | auide_hwif.black_list = in_drive_list(drive->id, |
| 604 | dma_black_list); |
| 605 | auide_hwif.drive = drive; |
| 606 | auide_ddma_init(&auide_hwif); |
| 607 | dbdma_init_done = 1; |
| 608 | } |
| 609 | #endif |
| 610 | |
| 611 | /* Is the drive in our DMA black list? */ |
| 612 | if ( auide_hwif.black_list ) { |
| 613 | drive->using_dma = 0; |
| 614 | printk("%s found in dma_blacklist[]! Disabling DMA.\n", |
| 615 | drive->id->model); |
| 616 | } |
| 617 | else |
| 618 | drive->using_dma = 1; |
| 619 | |
| 620 | return HWIF(drive)->ide_dma_host_on(drive); |
| 621 | } |
| 622 | |
| 623 | static int auide_dma_test_irq(ide_drive_t *drive) |
| 624 | { |
| 625 | // printk("%s\n", __FUNCTION__); |
| 626 | |
| 627 | if (!drive->waiting_for_dma) |
| 628 | printk(KERN_WARNING "%s: ide_dma_test_irq \ |
| 629 | called while not waiting\n", drive->name); |
| 630 | |
| 631 | /* If dbdma didn't execute the STOP command yet, the |
| 632 | * active bit is still set |
| 633 | */ |
| 634 | drive->waiting_for_dma++; |
| 635 | if (drive->waiting_for_dma >= DMA_WAIT_TIMEOUT) { |
| 636 | printk(KERN_WARNING "%s: timeout waiting for ddma to \ |
| 637 | complete\n", drive->name); |
| 638 | return 1; |
| 639 | } |
| 640 | udelay(10); |
| 641 | return 0; |
| 642 | } |
| 643 | |
| 644 | static int auide_dma_host_on(ide_drive_t *drive) |
| 645 | { |
| 646 | // printk("%s\n", __FUNCTION__); |
| 647 | return 0; |
| 648 | } |
| 649 | |
| 650 | static int auide_dma_on(ide_drive_t *drive) |
| 651 | { |
| 652 | // printk("%s\n", __FUNCTION__); |
| 653 | drive->using_dma = 1; |
| 654 | return auide_dma_host_on(drive); |
| 655 | } |
| 656 | |
| 657 | |
| 658 | static int auide_dma_host_off(ide_drive_t *drive) |
| 659 | { |
| 660 | // printk("%s\n", __FUNCTION__); |
| 661 | return 0; |
| 662 | } |
| 663 | |
| 664 | static int auide_dma_off_quietly(ide_drive_t *drive) |
| 665 | { |
| 666 | // printk("%s\n", __FUNCTION__); |
| 667 | drive->using_dma = 0; |
| 668 | return auide_dma_host_off(drive); |
| 669 | } |
| 670 | |
| 671 | static int auide_dma_lostirq(ide_drive_t *drive) |
| 672 | { |
| 673 | // printk("%s\n", __FUNCTION__); |
| 674 | |
| 675 | printk(KERN_ERR "%s: IRQ lost\n", drive->name); |
| 676 | return 0; |
| 677 | } |
| 678 | |
| 679 | static void auide_ddma_tx_callback(int irq, void *param, struct pt_regs *regs) |
| 680 | { |
| 681 | // printk("%s\n", __FUNCTION__); |
| 682 | |
| 683 | _auide_hwif *ahwif = (_auide_hwif*)param; |
| 684 | ahwif->drive->waiting_for_dma = 0; |
| 685 | return; |
| 686 | } |
| 687 | |
| 688 | static void auide_ddma_rx_callback(int irq, void *param, struct pt_regs *regs) |
| 689 | { |
| 690 | // printk("%s\n", __FUNCTION__); |
| 691 | |
| 692 | _auide_hwif *ahwif = (_auide_hwif*)param; |
| 693 | ahwif->drive->waiting_for_dma = 0; |
| 694 | return; |
| 695 | } |
| 696 | |
| 697 | static int auide_dma_timeout(ide_drive_t *drive) |
| 698 | { |
| 699 | // printk("%s\n", __FUNCTION__); |
| 700 | |
| 701 | printk(KERN_ERR "%s: DMA timeout occurred: ", drive->name); |
| 702 | |
| 703 | if (HWIF(drive)->ide_dma_test_irq(drive)) |
| 704 | return 0; |
| 705 | |
| 706 | return HWIF(drive)->ide_dma_end(drive); |
| 707 | } |
| 708 | #endif /* end CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */ |
| 709 | |
| 710 | |
| 711 | static int auide_ddma_init( _auide_hwif *auide ) |
| 712 | { |
| 713 | // printk("%s\n", __FUNCTION__); |
| 714 | |
| 715 | dbdev_tab_t source_dev_tab; |
| 716 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA) |
| 717 | dbdev_tab_t target_dev_tab; |
| 718 | ide_hwif_t *hwif = auide->hwif; |
| 719 | char warning_output [2][80]; |
| 720 | int i; |
| 721 | #endif |
| 722 | |
| 723 | /* Add our custom device to DDMA device table */ |
| 724 | /* Create our new device entries in the table */ |
| 725 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA) |
| 726 | source_dev_tab.dev_id = AU1XXX_ATA_DDMA_REQ; |
| 727 | |
| 728 | if( auide->white_list || auide->black_list ){ |
| 729 | source_dev_tab.dev_tsize = 8; |
| 730 | source_dev_tab.dev_devwidth = 32; |
| 731 | source_dev_tab.dev_physaddr = (u32)AU1XXX_ATA_PHYS_ADDR; |
| 732 | source_dev_tab.dev_intlevel = 0; |
| 733 | source_dev_tab.dev_intpolarity = 0; |
| 734 | |
| 735 | /* init device table for target - static bus controller - */ |
| 736 | target_dev_tab.dev_id = DSCR_CMD0_ALWAYS; |
| 737 | target_dev_tab.dev_tsize = 8; |
| 738 | target_dev_tab.dev_devwidth = 32; |
| 739 | target_dev_tab.dev_physaddr = (u32)AU1XXX_ATA_PHYS_ADDR; |
| 740 | target_dev_tab.dev_intlevel = 0; |
| 741 | target_dev_tab.dev_intpolarity = 0; |
| 742 | target_dev_tab.dev_flags = DEV_FLAGS_ANYUSE; |
| 743 | } |
| 744 | else{ |
| 745 | source_dev_tab.dev_tsize = 1; |
| 746 | source_dev_tab.dev_devwidth = 16; |
| 747 | source_dev_tab.dev_physaddr = (u32)AU1XXX_ATA_PHYS_ADDR; |
| 748 | source_dev_tab.dev_intlevel = 0; |
| 749 | source_dev_tab.dev_intpolarity = 0; |
| 750 | |
| 751 | /* init device table for target - static bus controller - */ |
| 752 | target_dev_tab.dev_id = DSCR_CMD0_ALWAYS; |
| 753 | target_dev_tab.dev_tsize = 1; |
| 754 | target_dev_tab.dev_devwidth = 16; |
| 755 | target_dev_tab.dev_physaddr = (u32)AU1XXX_ATA_PHYS_ADDR; |
| 756 | target_dev_tab.dev_intlevel = 0; |
| 757 | target_dev_tab.dev_intpolarity = 0; |
| 758 | target_dev_tab.dev_flags = DEV_FLAGS_ANYUSE; |
| 759 | |
| 760 | sprintf(&warning_output[0][0], |
| 761 | "%s is not on ide driver white list.", |
| 762 | auide_hwif.drive->id->model); |
| 763 | for ( i=strlen(&warning_output[0][0]) ; i<76; i++ ){ |
| 764 | sprintf(&warning_output[0][i]," "); |
| 765 | } |
| 766 | |
| 767 | sprintf(&warning_output[1][0], |
| 768 | "To add %s please read 'Documentation/mips/AU1xxx_IDE.README'.", |
| 769 | auide_hwif.drive->id->model); |
| 770 | for ( i=strlen(&warning_output[1][0]) ; i<76; i++ ){ |
| 771 | sprintf(&warning_output[1][i]," "); |
| 772 | } |
| 773 | |
| 774 | printk("\n****************************************"); |
| 775 | printk("****************************************\n"); |
| 776 | printk("* %s *\n",&warning_output[0][0]); |
| 777 | printk("* Switch to safe MWDMA Mode! "); |
| 778 | printk(" *\n"); |
| 779 | printk("* %s *\n",&warning_output[1][0]); |
| 780 | printk("****************************************"); |
| 781 | printk("****************************************\n\n"); |
| 782 | } |
| 783 | #else |
| 784 | source_dev_tab.dev_id = DSCR_CMD0_ALWAYS; |
| 785 | source_dev_tab.dev_tsize = 8; |
| 786 | source_dev_tab.dev_devwidth = 32; |
| 787 | source_dev_tab.dev_physaddr = (u32)AU1XXX_ATA_PHYS_ADDR; |
| 788 | source_dev_tab.dev_intlevel = 0; |
| 789 | source_dev_tab.dev_intpolarity = 0; |
| 790 | #endif |
| 791 | |
| 792 | #if CONFIG_BLK_DEV_IDE_AU1XXX_BURSTABLE_ON |
| 793 | /* set flags for tx channel */ |
| 794 | source_dev_tab.dev_flags = DEV_FLAGS_OUT |
| 795 | | DEV_FLAGS_SYNC |
| 796 | | DEV_FLAGS_BURSTABLE; |
| 797 | auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
| 798 | /* set flags for rx channel */ |
| 799 | source_dev_tab.dev_flags = DEV_FLAGS_IN |
| 800 | | DEV_FLAGS_SYNC |
| 801 | | DEV_FLAGS_BURSTABLE; |
| 802 | auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
| 803 | #else |
| 804 | /* set flags for tx channel */ |
| 805 | source_dev_tab.dev_flags = DEV_FLAGS_OUT | DEV_FLAGS_SYNC; |
| 806 | auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
| 807 | /* set flags for rx channel */ |
| 808 | source_dev_tab.dev_flags = DEV_FLAGS_IN | DEV_FLAGS_SYNC; |
| 809 | auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
| 810 | #endif |
| 811 | |
| 812 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA) |
| 813 | |
| 814 | auide->target_dev_id = au1xxx_ddma_add_device(&target_dev_tab); |
| 815 | |
| 816 | /* Get a channel for TX */ |
| 817 | auide->tx_chan = au1xxx_dbdma_chan_alloc(auide->target_dev_id, |
| 818 | auide->tx_dev_id, |
| 819 | auide_ddma_tx_callback, |
| 820 | (void*)auide); |
| 821 | /* Get a channel for RX */ |
| 822 | auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id, |
| 823 | auide->target_dev_id, |
| 824 | auide_ddma_rx_callback, |
| 825 | (void*)auide); |
| 826 | #else /* CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA */ |
| 827 | /* |
| 828 | * Note: if call back is not enabled, update ctp->cur_ptr manually |
| 829 | */ |
| 830 | auide->tx_chan = au1xxx_dbdma_chan_alloc(DSCR_CMD0_ALWAYS, |
| 831 | auide->tx_dev_id, |
| 832 | NULL, |
| 833 | (void*)auide); |
| 834 | auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id, |
| 835 | DSCR_CMD0_ALWAYS, |
| 836 | NULL, |
| 837 | (void*)auide); |
| 838 | #endif |
| 839 | auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan, |
| 840 | NUM_DESCRIPTORS); |
| 841 | auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan, |
| 842 | NUM_DESCRIPTORS); |
| 843 | |
| 844 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA) |
| 845 | hwif->dmatable_cpu = dma_alloc_coherent(auide->dev, |
| 846 | PRD_ENTRIES * PRD_BYTES, /* 1 Page */ |
| 847 | &hwif->dmatable_dma, GFP_KERNEL); |
| 848 | |
| 849 | auide->sg_table = kmalloc(sizeof(struct scatterlist) * PRD_ENTRIES, |
| 850 | GFP_KERNEL|GFP_DMA); |
| 851 | if (auide->sg_table == NULL) { |
| 852 | return -ENOMEM; |
| 853 | } |
| 854 | #endif |
| 855 | au1xxx_dbdma_start( auide->tx_chan ); |
| 856 | au1xxx_dbdma_start( auide->rx_chan ); |
| 857 | return 0; |
| 858 | } |
| 859 | |
| 860 | static void auide_setup_ports(hw_regs_t *hw, _auide_hwif *ahwif) |
| 861 | { |
| 862 | int i; |
| 863 | #define ide_ioreg_t unsigned long |
| 864 | ide_ioreg_t *ata_regs = hw->io_ports; |
| 865 | |
| 866 | /* fixme */ |
| 867 | for (i = 0; i < IDE_CONTROL_OFFSET; i++) { |
| 868 | *ata_regs++ = (ide_ioreg_t) ahwif->regbase |
| 869 | + (ide_ioreg_t)(i << AU1XXX_ATA_REG_OFFSET); |
| 870 | } |
| 871 | |
| 872 | /* set the Alternative Status register */ |
| 873 | *ata_regs = (ide_ioreg_t) ahwif->regbase |
| 874 | + (ide_ioreg_t)(14 << AU1XXX_ATA_REG_OFFSET); |
| 875 | } |
| 876 | |
| 877 | static int au_ide_probe(struct device *dev) |
| 878 | { |
| 879 | struct platform_device *pdev = to_platform_device(dev); |
| 880 | _auide_hwif *ahwif = &auide_hwif; |
| 881 | ide_hwif_t *hwif; |
| 882 | struct resource *res; |
| 883 | int ret = 0; |
| 884 | |
| 885 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA) |
| 886 | char *mode = "MWDMA2"; |
| 887 | #elif defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA) |
| 888 | char *mode = "PIO+DDMA(offload)"; |
| 889 | #endif |
| 890 | |
| 891 | memset(&auide_hwif, 0, sizeof(_auide_hwif)); |
| 892 | auide_hwif.dev = 0; |
| 893 | |
| 894 | ahwif->dev = dev; |
| 895 | ahwif->irq = platform_get_irq(pdev, 0); |
| 896 | |
| 897 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 898 | |
| 899 | if (res == NULL) { |
| 900 | pr_debug("%s %d: no base address\n", DRV_NAME, pdev->id); |
| 901 | ret = -ENODEV; |
| 902 | goto out; |
| 903 | } |
| 904 | |
| 905 | if (!request_mem_region (res->start, res->end-res->start, pdev->name)) { |
| 906 | pr_debug("%s: request_mem_region failed\n", DRV_NAME); |
| 907 | ret = -EBUSY; |
| 908 | goto out; |
| 909 | } |
| 910 | |
| 911 | ahwif->regbase = (u32)ioremap(res->start, res->end-res->start); |
| 912 | if (ahwif->regbase == 0) { |
| 913 | ret = -ENOMEM; |
| 914 | goto out; |
| 915 | } |
| 916 | |
| 917 | hwif = &ide_hwifs[pdev->id]; |
| 918 | hw_regs_t *hw = &hwif->hw; |
| 919 | hwif->irq = hw->irq = ahwif->irq; |
| 920 | hwif->chipset = ide_au1xxx; |
| 921 | |
| 922 | auide_setup_ports(hw, ahwif); |
| 923 | memcpy(hwif->io_ports, hw->io_ports, sizeof(hwif->io_ports)); |
| 924 | |
| 925 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_SEQTS_PER_RQ |
| 926 | hwif->rqsize = CONFIG_BLK_DEV_IDE_AU1XXX_SEQTS_PER_RQ; |
| 927 | hwif->rqsize = ((hwif->rqsize > AU1XXX_ATA_RQSIZE) |
| 928 | || (hwif->rqsize < 32)) ? AU1XXX_ATA_RQSIZE : hwif->rqsize; |
| 929 | #else /* if kernel config is not set */ |
| 930 | hwif->rqsize = AU1XXX_ATA_RQSIZE; |
| 931 | #endif |
| 932 | |
| 933 | hwif->ultra_mask = 0x0; /* Disable Ultra DMA */ |
| 934 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
| 935 | hwif->mwdma_mask = 0x07; /* Multimode-2 DMA */ |
| 936 | hwif->swdma_mask = 0x07; |
| 937 | #else |
| 938 | hwif->mwdma_mask = 0x0; |
| 939 | hwif->swdma_mask = 0x0; |
| 940 | #endif |
| 941 | //hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET]; |
| 942 | hwif->noprobe = 0; |
| 943 | hwif->drives[0].unmask = 1; |
| 944 | hwif->drives[1].unmask = 1; |
| 945 | |
| 946 | /* hold should be on in all cases */ |
| 947 | hwif->hold = 1; |
| 948 | hwif->mmio = 2; |
| 949 | |
| 950 | /* set up local I/O function entry points */ |
| 951 | hwif->INB = auide_inb; |
| 952 | hwif->INW = auide_inw; |
| 953 | hwif->INL = auide_inl; |
| 954 | hwif->INSW = auide_insw; |
| 955 | hwif->INSL = auide_insl; |
| 956 | hwif->OUTB = auide_outb; |
| 957 | hwif->OUTBSYNC = auide_outbsync; |
| 958 | hwif->OUTW = auide_outw; |
| 959 | hwif->OUTL = auide_outl; |
| 960 | hwif->OUTSW = auide_outsw; |
| 961 | hwif->OUTSL = auide_outsl; |
| 962 | |
| 963 | hwif->tuneproc = &auide_tune_drive; |
| 964 | hwif->speedproc = &auide_tune_chipset; |
| 965 | |
| 966 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
| 967 | hwif->ide_dma_off_quietly = &auide_dma_off_quietly; |
| 968 | hwif->ide_dma_timeout = &auide_dma_timeout; |
| 969 | |
| 970 | hwif->ide_dma_check = &auide_dma_check; |
| 971 | hwif->dma_exec_cmd = &auide_dma_exec_cmd; |
| 972 | hwif->dma_start = &auide_dma_start; |
| 973 | hwif->ide_dma_end = &auide_dma_end; |
| 974 | hwif->dma_setup = &auide_dma_setup; |
| 975 | hwif->ide_dma_test_irq = &auide_dma_test_irq; |
| 976 | hwif->ide_dma_host_off = &auide_dma_host_off; |
| 977 | hwif->ide_dma_host_on = &auide_dma_host_on; |
| 978 | hwif->ide_dma_lostirq = &auide_dma_lostirq; |
| 979 | hwif->ide_dma_on = &auide_dma_on; |
| 980 | |
| 981 | hwif->autodma = 1; |
| 982 | hwif->drives[0].autodma = hwif->autodma; |
| 983 | hwif->drives[1].autodma = hwif->autodma; |
| 984 | hwif->atapi_dma = 1; |
| 985 | hwif->drives[0].using_dma = 1; |
| 986 | hwif->drives[1].using_dma = 1; |
| 987 | #else /* !CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */ |
| 988 | hwif->autodma = 0; |
| 989 | hwif->channel = 0; |
| 990 | hwif->hold = 1; |
| 991 | hwif->select_data = 0; /* no chipset-specific code */ |
| 992 | hwif->config_data = 0; /* no chipset-specific code */ |
| 993 | |
| 994 | hwif->drives[0].autodma = 0; |
| 995 | hwif->drives[0].drive_data = 0; /* no drive data */ |
| 996 | hwif->drives[0].using_dma = 0; |
| 997 | hwif->drives[0].waiting_for_dma = 0; |
| 998 | hwif->drives[0].autotune = 1; /* 1=autotune, 2=noautotune, 0=default */ |
| 999 | /* secondary hdd not supported */ |
| 1000 | hwif->drives[1].autodma = 0; |
| 1001 | |
| 1002 | hwif->drives[1].drive_data = 0; |
| 1003 | hwif->drives[1].using_dma = 0; |
| 1004 | hwif->drives[1].waiting_for_dma = 0; |
| 1005 | hwif->drives[1].autotune = 2; /* 1=autotune, 2=noautotune, 0=default */ |
| 1006 | #endif |
| 1007 | hwif->drives[0].io_32bit = 0; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */ |
| 1008 | hwif->drives[1].io_32bit = 0; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */ |
| 1009 | |
| 1010 | /*Register Driver with PM Framework*/ |
| 1011 | #ifdef CONFIG_PM |
| 1012 | auide_hwif.pm.lock = SPIN_LOCK_UNLOCKED; |
| 1013 | auide_hwif.pm.stopped = 0; |
| 1014 | |
| 1015 | auide_hwif.pm.dev = new_au1xxx_power_device( "ide", |
| 1016 | &au1200ide_pm_callback, |
| 1017 | NULL); |
| 1018 | if ( auide_hwif.pm.dev == NULL ) |
| 1019 | printk(KERN_INFO "Unable to create a power management \ |
| 1020 | device entry for the au1200-IDE.\n"); |
| 1021 | else |
| 1022 | printk(KERN_INFO "Power management device entry for the \ |
| 1023 | au1200-IDE loaded.\n"); |
| 1024 | #endif |
| 1025 | |
| 1026 | auide_hwif.hwif = hwif; |
| 1027 | hwif->hwif_data = &auide_hwif; |
| 1028 | |
| 1029 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA |
| 1030 | auide_ddma_init(&auide_hwif); |
| 1031 | dbdma_init_done = 1; |
| 1032 | #endif |
| 1033 | |
| 1034 | probe_hwif_init(hwif); |
| 1035 | dev_set_drvdata(dev, hwif); |
| 1036 | |
| 1037 | printk(KERN_INFO "Au1xxx IDE(builtin) configured for %s\n", mode ); |
| 1038 | |
| 1039 | out: |
| 1040 | return ret; |
| 1041 | } |
| 1042 | |
| 1043 | static int au_ide_remove(struct device *dev) |
| 1044 | { |
| 1045 | struct platform_device *pdev = to_platform_device(dev); |
| 1046 | struct resource *res; |
| 1047 | ide_hwif_t *hwif = dev_get_drvdata(dev); |
| 1048 | _auide_hwif *ahwif = &auide_hwif; |
| 1049 | |
| 1050 | ide_unregister(hwif - ide_hwifs); |
| 1051 | |
| 1052 | iounmap((void *)ahwif->regbase); |
| 1053 | |
| 1054 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1055 | release_mem_region(res->start, res->end - res->start); |
| 1056 | |
| 1057 | return 0; |
| 1058 | } |
| 1059 | |
| 1060 | static struct device_driver au1200_ide_driver = { |
| 1061 | .name = "au1200-ide", |
| 1062 | .bus = &platform_bus_type, |
| 1063 | .probe = au_ide_probe, |
| 1064 | .remove = au_ide_remove, |
| 1065 | }; |
| 1066 | |
| 1067 | static int __init au_ide_init(void) |
| 1068 | { |
| 1069 | return driver_register(&au1200_ide_driver); |
| 1070 | } |
| 1071 | |
| 1072 | static void __init au_ide_exit(void) |
| 1073 | { |
| 1074 | driver_unregister(&au1200_ide_driver); |
| 1075 | } |
| 1076 | |
| 1077 | #ifdef CONFIG_PM |
| 1078 | int au1200ide_pm_callback( au1xxx_power_dev_t *dev,\ |
| 1079 | au1xxx_request_t request, void *data) { |
| 1080 | |
| 1081 | unsigned int d, err = 0; |
| 1082 | unsigned long flags; |
| 1083 | |
| 1084 | spin_lock_irqsave(auide_hwif.pm.lock, flags); |
| 1085 | |
| 1086 | switch (request){ |
| 1087 | case AU1XXX_PM_SLEEP: |
| 1088 | err = au1xxxide_pm_sleep(dev); |
| 1089 | break; |
| 1090 | case AU1XXX_PM_WAKEUP: |
| 1091 | d = *((unsigned int*)data); |
| 1092 | if ( d > 0 && d <= 99) { |
| 1093 | err = au1xxxide_pm_standby(dev); |
| 1094 | } |
| 1095 | else { |
| 1096 | err = au1xxxide_pm_resume(dev); |
| 1097 | } |
| 1098 | break; |
| 1099 | case AU1XXX_PM_GETSTATUS: |
| 1100 | err = au1xxxide_pm_getstatus(dev); |
| 1101 | break; |
| 1102 | case AU1XXX_PM_ACCESS: |
| 1103 | err = au1xxxide_pm_access(dev); |
| 1104 | break; |
| 1105 | case AU1XXX_PM_IDLE: |
| 1106 | err = au1xxxide_pm_idle(dev); |
| 1107 | break; |
| 1108 | case AU1XXX_PM_CLEANUP: |
| 1109 | err = au1xxxide_pm_cleanup(dev); |
| 1110 | break; |
| 1111 | default: |
| 1112 | err = -1; |
| 1113 | break; |
| 1114 | } |
| 1115 | |
| 1116 | spin_unlock_irqrestore(auide_hwif.pm.lock, flags); |
| 1117 | |
| 1118 | return err; |
| 1119 | } |
| 1120 | |
| 1121 | static int au1xxxide_pm_standby( au1xxx_power_dev_t *dev ) { |
| 1122 | return 0; |
| 1123 | } |
| 1124 | |
| 1125 | static int au1xxxide_pm_sleep( au1xxx_power_dev_t *dev ) { |
| 1126 | |
| 1127 | int retval; |
| 1128 | ide_hwif_t *hwif = auide_hwif.hwif; |
| 1129 | struct request rq; |
| 1130 | struct request_pm_state rqpm; |
| 1131 | ide_task_t args; |
| 1132 | |
| 1133 | if(auide_hwif.pm.stopped) |
| 1134 | return -1; |
| 1135 | |
| 1136 | /* |
| 1137 | * wait until hard disc is ready |
| 1138 | */ |
| 1139 | if ( wait_for_ready(&hwif->drives[0], 35000) ) { |
| 1140 | printk("Wait for drive sleep timeout!\n"); |
| 1141 | retval = -1; |
| 1142 | } |
| 1143 | |
| 1144 | /* |
| 1145 | * sequenz to tell the high level ide driver that pm is resuming |
| 1146 | */ |
| 1147 | memset(&rq, 0, sizeof(rq)); |
| 1148 | memset(&rqpm, 0, sizeof(rqpm)); |
| 1149 | memset(&args, 0, sizeof(args)); |
| 1150 | rq.flags = REQ_PM_SUSPEND; |
| 1151 | rq.special = &args; |
| 1152 | rq.pm = &rqpm; |
| 1153 | rqpm.pm_step = ide_pm_state_start_suspend; |
| 1154 | rqpm.pm_state = PMSG_SUSPEND; |
| 1155 | |
| 1156 | retval = ide_do_drive_cmd(&hwif->drives[0], &rq, ide_wait); |
| 1157 | |
| 1158 | if (wait_for_ready (&hwif->drives[0], 35000)) { |
| 1159 | printk("Wait for drive sleep timeout!\n"); |
| 1160 | retval = -1; |
| 1161 | } |
| 1162 | |
| 1163 | /* |
| 1164 | * stop dbdma channels |
| 1165 | */ |
| 1166 | au1xxx_dbdma_reset(auide_hwif.tx_chan); |
| 1167 | au1xxx_dbdma_reset(auide_hwif.rx_chan); |
| 1168 | |
| 1169 | auide_hwif.pm.stopped = 1; |
| 1170 | |
| 1171 | return retval; |
| 1172 | } |
| 1173 | |
| 1174 | static int au1xxxide_pm_resume( au1xxx_power_dev_t *dev ) { |
| 1175 | |
| 1176 | int retval; |
| 1177 | ide_hwif_t *hwif = auide_hwif.hwif; |
| 1178 | struct request rq; |
| 1179 | struct request_pm_state rqpm; |
| 1180 | ide_task_t args; |
| 1181 | |
| 1182 | if(!auide_hwif.pm.stopped) |
| 1183 | return -1; |
| 1184 | |
| 1185 | /* |
| 1186 | * start dbdma channels |
| 1187 | */ |
| 1188 | au1xxx_dbdma_start(auide_hwif.tx_chan); |
| 1189 | au1xxx_dbdma_start(auide_hwif.rx_chan); |
| 1190 | |
| 1191 | /* |
| 1192 | * wait until hard disc is ready |
| 1193 | */ |
| 1194 | if (wait_for_ready ( &hwif->drives[0], 35000)) { |
| 1195 | printk("Wait for drive wake up timeout!\n"); |
| 1196 | retval = -1; |
| 1197 | } |
| 1198 | |
| 1199 | /* |
| 1200 | * sequenz to tell the high level ide driver that pm is resuming |
| 1201 | */ |
| 1202 | memset(&rq, 0, sizeof(rq)); |
| 1203 | memset(&rqpm, 0, sizeof(rqpm)); |
| 1204 | memset(&args, 0, sizeof(args)); |
| 1205 | rq.flags = REQ_PM_RESUME; |
| 1206 | rq.special = &args; |
| 1207 | rq.pm = &rqpm; |
| 1208 | rqpm.pm_step = ide_pm_state_start_resume; |
| 1209 | rqpm.pm_state = PMSG_ON; |
| 1210 | |
| 1211 | retval = ide_do_drive_cmd(&hwif->drives[0], &rq, ide_head_wait); |
| 1212 | |
| 1213 | /* |
| 1214 | * wait for hard disc |
| 1215 | */ |
| 1216 | if ( wait_for_ready(&hwif->drives[0], 35000) ) { |
| 1217 | printk("Wait for drive wake up timeout!\n"); |
| 1218 | retval = -1; |
| 1219 | } |
| 1220 | |
| 1221 | auide_hwif.pm.stopped = 0; |
| 1222 | |
| 1223 | return retval; |
| 1224 | } |
| 1225 | |
| 1226 | static int au1xxxide_pm_getstatus( au1xxx_power_dev_t *dev ) { |
| 1227 | return dev->cur_state; |
| 1228 | } |
| 1229 | |
| 1230 | static int au1xxxide_pm_access( au1xxx_power_dev_t *dev ) { |
| 1231 | if (dev->cur_state != AWAKE_STATE) |
| 1232 | return 0; |
| 1233 | else |
| 1234 | return -1; |
| 1235 | } |
| 1236 | |
| 1237 | static int au1xxxide_pm_idle( au1xxx_power_dev_t *dev ) { |
| 1238 | return 0; |
| 1239 | } |
| 1240 | |
| 1241 | static int au1xxxide_pm_cleanup( au1xxx_power_dev_t *dev ) { |
| 1242 | return 0; |
| 1243 | } |
| 1244 | #endif /* CONFIG_PM */ |
| 1245 | |
| 1246 | MODULE_LICENSE("GPL"); |
| 1247 | MODULE_DESCRIPTION("AU1200 IDE driver"); |
| 1248 | |
| 1249 | module_init(au_ide_init); |
| 1250 | module_exit(au_ide_exit); |