Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/drivers/ide/pci/sl82c105.c |
| 3 | * |
| 4 | * SL82C105/Winbond 553 IDE driver |
| 5 | * |
| 6 | * Maintainer unknown. |
| 7 | * |
| 8 | * Drive tuning added from Rebel.com's kernel sources |
| 9 | * -- Russell King (15/11/98) linux@arm.linux.org.uk |
| 10 | * |
| 11 | * Merge in Russell's HW workarounds, fix various problems |
| 12 | * with the timing registers setup. |
| 13 | * -- Benjamin Herrenschmidt (01/11/03) benh@kernel.crashing.org |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame^] | 14 | * |
| 15 | * Copyright (C) 2006-2007 MontaVista Software, Inc. <source@mvista.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | */ |
| 17 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include <linux/types.h> |
| 19 | #include <linux/module.h> |
| 20 | #include <linux/kernel.h> |
| 21 | #include <linux/timer.h> |
| 22 | #include <linux/mm.h> |
| 23 | #include <linux/ioport.h> |
| 24 | #include <linux/interrupt.h> |
| 25 | #include <linux/blkdev.h> |
| 26 | #include <linux/hdreg.h> |
| 27 | #include <linux/pci.h> |
| 28 | #include <linux/ide.h> |
| 29 | |
| 30 | #include <asm/io.h> |
| 31 | #include <asm/dma.h> |
| 32 | |
| 33 | #undef DEBUG |
| 34 | |
| 35 | #ifdef DEBUG |
| 36 | #define DBG(arg) printk arg |
| 37 | #else |
| 38 | #define DBG(fmt,...) |
| 39 | #endif |
| 40 | /* |
| 41 | * SL82C105 PCI config register 0x40 bits. |
| 42 | */ |
| 43 | #define CTRL_IDE_IRQB (1 << 30) |
| 44 | #define CTRL_IDE_IRQA (1 << 28) |
| 45 | #define CTRL_LEGIRQ (1 << 11) |
| 46 | #define CTRL_P1F16 (1 << 5) |
| 47 | #define CTRL_P1EN (1 << 4) |
| 48 | #define CTRL_P0F16 (1 << 1) |
| 49 | #define CTRL_P0EN (1 << 0) |
| 50 | |
| 51 | /* |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame^] | 52 | * Convert a PIO mode and cycle time to the required on/off times |
| 53 | * for the interface. This has protection against runaway timings. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | */ |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame^] | 55 | static unsigned int get_pio_timings(ide_pio_data_t *p) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | { |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame^] | 57 | unsigned int cmd_on, cmd_off; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame^] | 59 | cmd_on = (ide_pio_timings[p->pio_mode].active_time + 29) / 30; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | cmd_off = (p->cycle_time - 30 * cmd_on + 29) / 30; |
| 61 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | if (cmd_on == 0) |
| 63 | cmd_on = 1; |
| 64 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | if (cmd_off == 0) |
| 66 | cmd_off = 1; |
| 67 | |
| 68 | return (cmd_on - 1) << 8 | (cmd_off - 1) | (p->use_iordy ? 0x40 : 0x00); |
| 69 | } |
| 70 | |
| 71 | /* |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame^] | 72 | * Configure the chipset for PIO mode. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | */ |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame^] | 74 | static u8 sl82c105_tune_pio(ide_drive_t *drive, u8 pio) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | { |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame^] | 76 | struct pci_dev *dev = HWIF(drive)->pci_dev; |
| 77 | int reg = 0x44 + drive->dn * 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | ide_pio_data_t p; |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame^] | 79 | u16 drv_ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame^] | 81 | DBG(("sl82c105_tune_pio(drive:%s, pio:%u)\n", drive->name, pio)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | |
| 83 | pio = ide_get_best_pio_mode(drive, pio, 5, &p); |
| 84 | |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame^] | 85 | drive->drive_data = drv_ctrl = get_pio_timings(&p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame^] | 87 | if (!drive->using_dma) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | /* |
| 89 | * If we are actually using MW DMA, then we can not |
| 90 | * reprogram the interface drive control register. |
| 91 | */ |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame^] | 92 | pci_write_config_word(dev, reg, drv_ctrl); |
| 93 | pci_read_config_word (dev, reg, &drv_ctrl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | } |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame^] | 95 | |
| 96 | printk(KERN_DEBUG "%s: selected %s (%dns) (%04X)\n", drive->name, |
| 97 | ide_xfer_verbose(pio + XFER_PIO_0), p.cycle_time, drv_ctrl); |
| 98 | |
| 99 | return pio; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | } |
| 101 | |
| 102 | /* |
| 103 | * Configure the drive and the chipset for DMA |
| 104 | */ |
| 105 | static int config_for_dma (ide_drive_t *drive) |
| 106 | { |
| 107 | ide_hwif_t *hwif = HWIF(drive); |
| 108 | struct pci_dev *dev = hwif->pci_dev; |
| 109 | unsigned int reg; |
| 110 | |
| 111 | DBG(("config_for_dma(drive:%s)\n", drive->name)); |
| 112 | |
| 113 | reg = (hwif->channel ? 0x4c : 0x44) + (drive->select.b.unit ? 4 : 0); |
| 114 | |
| 115 | if (ide_config_drive_speed(drive, XFER_MW_DMA_2) != 0) |
| 116 | return 1; |
| 117 | |
| 118 | pci_write_config_word(dev, reg, 0x0240); |
| 119 | |
| 120 | return 0; |
| 121 | } |
| 122 | |
| 123 | /* |
| 124 | * Check to see if the drive and |
| 125 | * chipset is capable of DMA mode |
| 126 | */ |
| 127 | |
| 128 | static int sl82c105_check_drive (ide_drive_t *drive) |
| 129 | { |
| 130 | ide_hwif_t *hwif = HWIF(drive); |
| 131 | |
| 132 | DBG(("sl82c105_check_drive(drive:%s)\n", drive->name)); |
| 133 | |
| 134 | do { |
| 135 | struct hd_driveid *id = drive->id; |
| 136 | |
| 137 | if (!drive->autodma) |
| 138 | break; |
| 139 | |
| 140 | if (!id || !(id->capability & 1)) |
| 141 | break; |
| 142 | |
| 143 | /* Consult the list of known "bad" drives */ |
| 144 | if (__ide_dma_bad_drive(drive)) |
| 145 | break; |
| 146 | |
| 147 | if (id->field_valid & 2) { |
| 148 | if ((id->dma_mword & hwif->mwdma_mask) || |
| 149 | (id->dma_1word & hwif->swdma_mask)) |
Bartlomiej Zolnierkiewicz | 3608b5d | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 150 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | } |
| 152 | |
Sergei Shtylyov | ea266ba | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 153 | if (__ide_dma_good_drive(drive) && id->eide_dma_time < 150) |
Bartlomiej Zolnierkiewicz | 3608b5d | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 154 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | } while (0); |
| 156 | |
Bartlomiej Zolnierkiewicz | 3608b5d | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 157 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | } |
| 159 | |
| 160 | /* |
| 161 | * The SL82C105 holds off all IDE interrupts while in DMA mode until |
| 162 | * all DMA activity is completed. Sometimes this causes problems (eg, |
| 163 | * when the drive wants to report an error condition). |
| 164 | * |
| 165 | * 0x7e is a "chip testing" register. Bit 2 resets the DMA controller |
| 166 | * state machine. We need to kick this to work around various bugs. |
| 167 | */ |
| 168 | static inline void sl82c105_reset_host(struct pci_dev *dev) |
| 169 | { |
| 170 | u16 val; |
| 171 | |
| 172 | pci_read_config_word(dev, 0x7e, &val); |
| 173 | pci_write_config_word(dev, 0x7e, val | (1 << 2)); |
| 174 | pci_write_config_word(dev, 0x7e, val & ~(1 << 2)); |
| 175 | } |
| 176 | |
| 177 | /* |
| 178 | * If we get an IRQ timeout, it might be that the DMA state machine |
| 179 | * got confused. Fix from Todd Inglett. Details from Winbond. |
| 180 | * |
| 181 | * This function is called when the IDE timer expires, the drive |
| 182 | * indicates that it is READY, and we were waiting for DMA to complete. |
| 183 | */ |
| 184 | static int sl82c105_ide_dma_lost_irq(ide_drive_t *drive) |
| 185 | { |
| 186 | ide_hwif_t *hwif = HWIF(drive); |
| 187 | struct pci_dev *dev = hwif->pci_dev; |
| 188 | u32 val, mask = hwif->channel ? CTRL_IDE_IRQB : CTRL_IDE_IRQA; |
| 189 | unsigned long dma_base = hwif->dma_base; |
| 190 | |
| 191 | printk("sl82c105: lost IRQ: resetting host\n"); |
| 192 | |
| 193 | /* |
| 194 | * Check the raw interrupt from the drive. |
| 195 | */ |
| 196 | pci_read_config_dword(dev, 0x40, &val); |
| 197 | if (val & mask) |
| 198 | printk("sl82c105: drive was requesting IRQ, but host lost it\n"); |
| 199 | |
| 200 | /* |
| 201 | * Was DMA enabled? If so, disable it - we're resetting the |
| 202 | * host. The IDE layer will be handling the drive for us. |
| 203 | */ |
Bartlomiej Zolnierkiewicz | 0ecdca2 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 204 | val = inb(dma_base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | if (val & 1) { |
| 206 | outb(val & ~1, dma_base); |
| 207 | printk("sl82c105: DMA was enabled\n"); |
| 208 | } |
| 209 | |
| 210 | sl82c105_reset_host(dev); |
| 211 | |
| 212 | /* ide_dmaproc would return 1, so we do as well */ |
| 213 | return 1; |
| 214 | } |
| 215 | |
| 216 | /* |
| 217 | * ATAPI devices can cause the SL82C105 DMA state machine to go gaga. |
| 218 | * Winbond recommend that the DMA state machine is reset prior to |
| 219 | * setting the bus master DMA enable bit. |
| 220 | * |
| 221 | * The generic IDE core will have disabled the BMEN bit before this |
| 222 | * function is called. |
| 223 | */ |
| 224 | static void sl82c105_ide_dma_start(ide_drive_t *drive) |
| 225 | { |
| 226 | ide_hwif_t *hwif = HWIF(drive); |
| 227 | struct pci_dev *dev = hwif->pci_dev; |
| 228 | |
| 229 | sl82c105_reset_host(dev); |
| 230 | ide_dma_start(drive); |
| 231 | } |
| 232 | |
| 233 | static int sl82c105_ide_dma_timeout(ide_drive_t *drive) |
| 234 | { |
| 235 | ide_hwif_t *hwif = HWIF(drive); |
| 236 | struct pci_dev *dev = hwif->pci_dev; |
| 237 | |
| 238 | DBG(("sl82c105_ide_dma_timeout(drive:%s)\n", drive->name)); |
| 239 | |
| 240 | sl82c105_reset_host(dev); |
| 241 | return __ide_dma_timeout(drive); |
| 242 | } |
| 243 | |
| 244 | static int sl82c105_ide_dma_on (ide_drive_t *drive) |
| 245 | { |
| 246 | DBG(("sl82c105_ide_dma_on(drive:%s)\n", drive->name)); |
| 247 | |
Sergei Shtylyov | ea266ba | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 248 | if (config_for_dma(drive)) |
| 249 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | printk(KERN_INFO "%s: DMA enabled\n", drive->name); |
| 251 | return __ide_dma_on(drive); |
| 252 | } |
| 253 | |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 254 | static void sl82c105_dma_off_quietly(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | { |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame^] | 256 | struct pci_dev *dev = HWIF(drive)->pci_dev; |
| 257 | int reg = 0x44 + drive->dn * 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 259 | DBG(("sl82c105_dma_off_quietly(drive:%s)\n", drive->name)); |
| 260 | |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame^] | 261 | pci_write_config_word(dev, reg, drive->drive_data); |
| 262 | |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 263 | ide_dma_off_quietly(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | } |
| 265 | |
| 266 | /* |
| 267 | * Ok, that is nasty, but we must make sure the DMA timings |
| 268 | * won't be used for a PIO access. The solution here is |
| 269 | * to make sure the 16 bits mode is diabled on the channel |
| 270 | * when DMA is enabled, thus causing the chip to use PIO0 |
| 271 | * timings for those operations. |
| 272 | */ |
| 273 | static void sl82c105_selectproc(ide_drive_t *drive) |
| 274 | { |
| 275 | ide_hwif_t *hwif = HWIF(drive); |
| 276 | struct pci_dev *dev = hwif->pci_dev; |
| 277 | u32 val, old, mask; |
| 278 | |
| 279 | //DBG(("sl82c105_selectproc(drive:%s)\n", drive->name)); |
| 280 | |
| 281 | mask = hwif->channel ? CTRL_P1F16 : CTRL_P0F16; |
Sergei Shtylyov | dd607d2 | 2006-12-08 02:40:01 -0800 | [diff] [blame] | 282 | old = val = (u32)pci_get_drvdata(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | if (drive->using_dma) |
| 284 | val &= ~mask; |
| 285 | else |
| 286 | val |= mask; |
| 287 | if (old != val) { |
| 288 | pci_write_config_dword(dev, 0x40, val); |
Sergei Shtylyov | dd607d2 | 2006-12-08 02:40:01 -0800 | [diff] [blame] | 289 | pci_set_drvdata(dev, (void *)val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | } |
| 291 | } |
| 292 | |
| 293 | /* |
| 294 | * ATA reset will clear the 16 bits mode in the control |
| 295 | * register, we need to update our cache |
| 296 | */ |
| 297 | static void sl82c105_resetproc(ide_drive_t *drive) |
| 298 | { |
Sergei Shtylyov | dd607d2 | 2006-12-08 02:40:01 -0800 | [diff] [blame] | 299 | struct pci_dev *dev = HWIF(drive)->pci_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | u32 val; |
| 301 | |
| 302 | DBG(("sl82c105_resetproc(drive:%s)\n", drive->name)); |
| 303 | |
| 304 | pci_read_config_dword(dev, 0x40, &val); |
Sergei Shtylyov | dd607d2 | 2006-12-08 02:40:01 -0800 | [diff] [blame] | 305 | pci_set_drvdata(dev, (void *)val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | } |
| 307 | |
| 308 | /* |
| 309 | * We only deal with PIO mode here - DMA mode 'using_dma' is not |
| 310 | * initialised at the point that this function is called. |
| 311 | */ |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame^] | 312 | static void sl82c105_tune_drive(ide_drive_t *drive, u8 pio) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | { |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame^] | 314 | DBG(("sl82c105_tune_drive(drive:%s, pio:%u)\n", drive->name, pio)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame^] | 316 | pio = sl82c105_tune_pio(drive, pio); |
| 317 | (void) ide_config_drive_speed(drive, XFER_PIO_0 + pio); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | } |
| 319 | |
| 320 | /* |
| 321 | * Return the revision of the Winbond bridge |
| 322 | * which this function is part of. |
| 323 | */ |
| 324 | static unsigned int sl82c105_bridge_revision(struct pci_dev *dev) |
| 325 | { |
| 326 | struct pci_dev *bridge; |
| 327 | u8 rev; |
| 328 | |
| 329 | /* |
| 330 | * The bridge should be part of the same device, but function 0. |
| 331 | */ |
| 332 | bridge = pci_find_slot(dev->bus->number, |
| 333 | PCI_DEVFN(PCI_SLOT(dev->devfn), 0)); |
| 334 | if (!bridge) |
| 335 | return -1; |
| 336 | |
| 337 | /* |
| 338 | * Make sure it is a Winbond 553 and is an ISA bridge. |
| 339 | */ |
| 340 | if (bridge->vendor != PCI_VENDOR_ID_WINBOND || |
| 341 | bridge->device != PCI_DEVICE_ID_WINBOND_83C553 || |
| 342 | bridge->class >> 8 != PCI_CLASS_BRIDGE_ISA) |
| 343 | return -1; |
| 344 | |
| 345 | /* |
| 346 | * We need to find function 0's revision, not function 1 |
| 347 | */ |
| 348 | pci_read_config_byte(bridge, PCI_REVISION_ID, &rev); |
| 349 | |
| 350 | return rev; |
| 351 | } |
| 352 | |
| 353 | /* |
| 354 | * Enable the PCI device |
| 355 | * |
| 356 | * --BenH: It's arch fixup code that should enable channels that |
| 357 | * have not been enabled by firmware. I decided we can still enable |
| 358 | * channel 0 here at least, but channel 1 has to be enabled by |
| 359 | * firmware or arch code. We still set both to 16 bits mode. |
| 360 | */ |
Herbert Xu | 34a6224 | 2005-07-03 16:36:56 +0200 | [diff] [blame] | 361 | static unsigned int __devinit init_chipset_sl82c105(struct pci_dev *dev, const char *msg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | { |
| 363 | u32 val; |
| 364 | |
| 365 | DBG(("init_chipset_sl82c105()\n")); |
| 366 | |
| 367 | pci_read_config_dword(dev, 0x40, &val); |
| 368 | val |= CTRL_P0EN | CTRL_P0F16 | CTRL_P1F16; |
| 369 | pci_write_config_dword(dev, 0x40, val); |
Sergei Shtylyov | dd607d2 | 2006-12-08 02:40:01 -0800 | [diff] [blame] | 370 | pci_set_drvdata(dev, (void *)val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | |
| 372 | return dev->irq; |
| 373 | } |
| 374 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | /* |
| 376 | * Initialise the chip |
| 377 | */ |
Herbert Xu | 34a6224 | 2005-07-03 16:36:56 +0200 | [diff] [blame] | 378 | static void __devinit init_hwif_sl82c105(ide_hwif_t *hwif) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | { |
Russell King | 9648f55 | 2005-11-12 16:57:29 +0000 | [diff] [blame] | 380 | unsigned int rev; |
Sergei Shtylyov | dd607d2 | 2006-12-08 02:40:01 -0800 | [diff] [blame] | 381 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | DBG(("init_hwif_sl82c105(hwif: ide%d)\n", hwif->index)); |
| 383 | |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame^] | 384 | hwif->tuneproc = &sl82c105_tune_drive; |
| 385 | hwif->selectproc = &sl82c105_selectproc; |
| 386 | hwif->resetproc = &sl82c105_resetproc; |
Sergei Shtylyov | dd607d2 | 2006-12-08 02:40:01 -0800 | [diff] [blame] | 387 | |
| 388 | /* |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame^] | 389 | * We support 32-bit I/O on this interface, and |
| 390 | * it doesn't have problems with interrupts. |
| 391 | */ |
| 392 | hwif->drives[0].io_32bit = hwif->drives[1].io_32bit = 1; |
| 393 | hwif->drives[0].unmask = hwif->drives[1].unmask = 1; |
| 394 | |
| 395 | /* |
Sergei Shtylyov | dd607d2 | 2006-12-08 02:40:01 -0800 | [diff] [blame] | 396 | * We always autotune PIO, this is done before DMA is checked, |
| 397 | * so there's no risk of accidentally disabling DMA |
| 398 | */ |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame^] | 399 | hwif->drives[0].autotune = hwif->drives[1].autotune = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | |
Russell King | 9648f55 | 2005-11-12 16:57:29 +0000 | [diff] [blame] | 401 | hwif->atapi_dma = 0; |
| 402 | hwif->mwdma_mask = 0; |
| 403 | hwif->swdma_mask = 0; |
| 404 | hwif->autodma = 0; |
| 405 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | if (!hwif->dma_base) |
| 407 | return; |
| 408 | |
Russell King | 9648f55 | 2005-11-12 16:57:29 +0000 | [diff] [blame] | 409 | rev = sl82c105_bridge_revision(hwif->pci_dev); |
| 410 | if (rev <= 5) { |
| 411 | /* |
| 412 | * Never ever EVER under any circumstances enable |
| 413 | * DMA when the bridge is this old. |
| 414 | */ |
| 415 | printk(" %s: Winbond 553 bridge revision %d, BM-DMA disabled\n", |
| 416 | hwif->name, rev); |
| 417 | } else { |
Russell King | 9648f55 | 2005-11-12 16:57:29 +0000 | [diff] [blame] | 418 | hwif->atapi_dma = 1; |
Sergei Shtylyov | ea266ba | 2007-02-17 02:40:22 +0100 | [diff] [blame] | 419 | hwif->mwdma_mask = 0x04; |
Russell King | 9648f55 | 2005-11-12 16:57:29 +0000 | [diff] [blame] | 420 | |
| 421 | hwif->ide_dma_check = &sl82c105_check_drive; |
| 422 | hwif->ide_dma_on = &sl82c105_ide_dma_on; |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 423 | hwif->dma_off_quietly = &sl82c105_dma_off_quietly; |
Russell King | 9648f55 | 2005-11-12 16:57:29 +0000 | [diff] [blame] | 424 | hwif->ide_dma_lostirq = &sl82c105_ide_dma_lost_irq; |
| 425 | hwif->dma_start = &sl82c105_ide_dma_start; |
| 426 | hwif->ide_dma_timeout = &sl82c105_ide_dma_timeout; |
| 427 | |
| 428 | if (!noautodma) |
| 429 | hwif->autodma = 1; |
| 430 | hwif->drives[0].autodma = hwif->autodma; |
| 431 | hwif->drives[1].autodma = hwif->autodma; |
Russell King | a151021 | 2005-11-12 17:45:45 +0000 | [diff] [blame] | 432 | |
| 433 | if (hwif->mate) |
| 434 | hwif->serialized = hwif->mate->serialized = 1; |
Russell King | 9648f55 | 2005-11-12 16:57:29 +0000 | [diff] [blame] | 435 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | } |
| 437 | |
| 438 | static ide_pci_device_t sl82c105_chipset __devinitdata = { |
| 439 | .name = "W82C105", |
| 440 | .init_chipset = init_chipset_sl82c105, |
| 441 | .init_hwif = init_hwif_sl82c105, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | .channels = 2, |
| 443 | .autodma = NOAUTODMA, |
| 444 | .enablebits = {{0x40,0x01,0x01}, {0x40,0x10,0x10}}, |
| 445 | .bootable = ON_BOARD, |
| 446 | }; |
| 447 | |
| 448 | static int __devinit sl82c105_init_one(struct pci_dev *dev, const struct pci_device_id *id) |
| 449 | { |
| 450 | return ide_setup_pci_device(dev, &sl82c105_chipset); |
| 451 | } |
| 452 | |
| 453 | static struct pci_device_id sl82c105_pci_tbl[] = { |
Alan Cox | f201f50 | 2006-06-28 04:27:02 -0700 | [diff] [blame] | 454 | { PCI_DEVICE(PCI_VENDOR_ID_WINBOND, PCI_DEVICE_ID_WINBOND_82C105), 0}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | { 0, }, |
| 456 | }; |
| 457 | MODULE_DEVICE_TABLE(pci, sl82c105_pci_tbl); |
| 458 | |
| 459 | static struct pci_driver driver = { |
| 460 | .name = "W82C105_IDE", |
| 461 | .id_table = sl82c105_pci_tbl, |
| 462 | .probe = sl82c105_init_one, |
| 463 | }; |
| 464 | |
Bartlomiej Zolnierkiewicz | 82ab1ee | 2007-01-27 13:46:56 +0100 | [diff] [blame] | 465 | static int __init sl82c105_ide_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | { |
| 467 | return ide_pci_register_driver(&driver); |
| 468 | } |
| 469 | |
| 470 | module_init(sl82c105_ide_init); |
| 471 | |
| 472 | MODULE_DESCRIPTION("PCI driver module for W82C105 IDE"); |
| 473 | MODULE_LICENSE("GPL"); |