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> |
Bartlomiej Zolnierkiewicz | 6ae8b1e | 2008-01-26 20:12:58 +0100 | [diff] [blame] | 16 | * Copyright (C) 2007 Bartlomiej Zolnierkiewicz |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | */ |
| 18 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | #include <linux/types.h> |
| 20 | #include <linux/module.h> |
| 21 | #include <linux/kernel.h> |
| 22 | #include <linux/timer.h> |
| 23 | #include <linux/mm.h> |
| 24 | #include <linux/ioport.h> |
| 25 | #include <linux/interrupt.h> |
| 26 | #include <linux/blkdev.h> |
| 27 | #include <linux/hdreg.h> |
| 28 | #include <linux/pci.h> |
| 29 | #include <linux/ide.h> |
| 30 | |
| 31 | #include <asm/io.h> |
| 32 | #include <asm/dma.h> |
| 33 | |
| 34 | #undef DEBUG |
| 35 | |
| 36 | #ifdef DEBUG |
| 37 | #define DBG(arg) printk arg |
| 38 | #else |
| 39 | #define DBG(fmt,...) |
| 40 | #endif |
| 41 | /* |
| 42 | * SL82C105 PCI config register 0x40 bits. |
| 43 | */ |
| 44 | #define CTRL_IDE_IRQB (1 << 30) |
| 45 | #define CTRL_IDE_IRQA (1 << 28) |
| 46 | #define CTRL_LEGIRQ (1 << 11) |
| 47 | #define CTRL_P1F16 (1 << 5) |
| 48 | #define CTRL_P1EN (1 << 4) |
| 49 | #define CTRL_P0F16 (1 << 1) |
| 50 | #define CTRL_P0EN (1 << 0) |
| 51 | |
| 52 | /* |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame] | 53 | * Convert a PIO mode and cycle time to the required on/off times |
| 54 | * for the interface. This has protection against runaway timings. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | */ |
Bartlomiej Zolnierkiewicz | 7dd0008 | 2007-07-20 01:11:56 +0200 | [diff] [blame] | 56 | static unsigned int get_pio_timings(ide_drive_t *drive, u8 pio) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | { |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame] | 58 | unsigned int cmd_on, cmd_off; |
Bartlomiej Zolnierkiewicz | 2229833 | 2007-07-20 01:11:55 +0200 | [diff] [blame] | 59 | u8 iordy = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | |
Bartlomiej Zolnierkiewicz | 7dd0008 | 2007-07-20 01:11:56 +0200 | [diff] [blame] | 61 | cmd_on = (ide_pio_timings[pio].active_time + 29) / 30; |
| 62 | cmd_off = (ide_pio_cycle_time(drive, pio) - 30 * cmd_on + 29) / 30; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | if (cmd_on == 0) |
| 65 | cmd_on = 1; |
| 66 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | if (cmd_off == 0) |
| 68 | cmd_off = 1; |
| 69 | |
Bartlomiej Zolnierkiewicz | 7dd0008 | 2007-07-20 01:11:56 +0200 | [diff] [blame] | 70 | if (pio > 2 || ide_dev_has_iordy(drive->id)) |
Bartlomiej Zolnierkiewicz | 2229833 | 2007-07-20 01:11:55 +0200 | [diff] [blame] | 71 | iordy = 0x40; |
| 72 | |
| 73 | return (cmd_on - 1) << 8 | (cmd_off - 1) | iordy; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | } |
| 75 | |
| 76 | /* |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame] | 77 | * Configure the chipset for PIO mode. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | */ |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 79 | static void sl82c105_set_pio_mode(ide_drive_t *drive, const u8 pio) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | { |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame^] | 81 | struct pci_dev *dev = to_pci_dev(drive->hwif->dev); |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame] | 82 | int reg = 0x44 + drive->dn * 4; |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame] | 83 | u16 drv_ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | |
Bartlomiej Zolnierkiewicz | 7dd0008 | 2007-07-20 01:11:56 +0200 | [diff] [blame] | 85 | drv_ctrl = get_pio_timings(drive, pio); |
Sergei Shtylyov | 46cedc9 | 2007-05-16 00:51:44 +0200 | [diff] [blame] | 86 | |
| 87 | /* |
| 88 | * Store the PIO timings so that we can restore them |
| 89 | * in case DMA will be turned off... |
| 90 | */ |
| 91 | drive->drive_data &= 0xffff0000; |
| 92 | drive->drive_data |= drv_ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | |
Bartlomiej Zolnierkiewicz | 6ae8b1e | 2008-01-26 20:12:58 +0100 | [diff] [blame] | 94 | pci_write_config_word(dev, reg, drv_ctrl); |
| 95 | pci_read_config_word (dev, reg, &drv_ctrl); |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame] | 96 | |
| 97 | printk(KERN_DEBUG "%s: selected %s (%dns) (%04X)\n", drive->name, |
Bartlomiej Zolnierkiewicz | 7dd0008 | 2007-07-20 01:11:56 +0200 | [diff] [blame] | 98 | ide_xfer_verbose(pio + XFER_PIO_0), |
| 99 | ide_pio_cycle_time(drive, pio), drv_ctrl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | } |
| 101 | |
| 102 | /* |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 103 | * Configure the chipset for DMA mode. |
Sergei Shtylyov | 46cedc9 | 2007-05-16 00:51:44 +0200 | [diff] [blame] | 104 | */ |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 105 | static void sl82c105_set_dma_mode(ide_drive_t *drive, const u8 speed) |
Sergei Shtylyov | 46cedc9 | 2007-05-16 00:51:44 +0200 | [diff] [blame] | 106 | { |
| 107 | static u16 mwdma_timings[] = {0x0707, 0x0201, 0x0200}; |
| 108 | u16 drv_ctrl; |
| 109 | |
| 110 | DBG(("sl82c105_tune_chipset(drive:%s, speed:%s)\n", |
| 111 | drive->name, ide_xfer_verbose(speed))); |
| 112 | |
Bartlomiej Zolnierkiewicz | 4db90a1 | 2008-01-25 22:17:18 +0100 | [diff] [blame] | 113 | drv_ctrl = mwdma_timings[speed - XFER_MW_DMA_0]; |
Sergei Shtylyov | 46cedc9 | 2007-05-16 00:51:44 +0200 | [diff] [blame] | 114 | |
Bartlomiej Zolnierkiewicz | 4db90a1 | 2008-01-25 22:17:18 +0100 | [diff] [blame] | 115 | /* |
| 116 | * Store the DMA timings so that we can actually program |
| 117 | * them when DMA will be turned on... |
| 118 | */ |
| 119 | drive->drive_data &= 0x0000ffff; |
| 120 | drive->drive_data |= (unsigned long)drv_ctrl << 16; |
Sergei Shtylyov | 46cedc9 | 2007-05-16 00:51:44 +0200 | [diff] [blame] | 121 | } |
| 122 | |
| 123 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | * The SL82C105 holds off all IDE interrupts while in DMA mode until |
| 125 | * all DMA activity is completed. Sometimes this causes problems (eg, |
| 126 | * when the drive wants to report an error condition). |
| 127 | * |
| 128 | * 0x7e is a "chip testing" register. Bit 2 resets the DMA controller |
| 129 | * state machine. We need to kick this to work around various bugs. |
| 130 | */ |
| 131 | static inline void sl82c105_reset_host(struct pci_dev *dev) |
| 132 | { |
| 133 | u16 val; |
| 134 | |
| 135 | pci_read_config_word(dev, 0x7e, &val); |
| 136 | pci_write_config_word(dev, 0x7e, val | (1 << 2)); |
| 137 | pci_write_config_word(dev, 0x7e, val & ~(1 << 2)); |
| 138 | } |
| 139 | |
| 140 | /* |
| 141 | * If we get an IRQ timeout, it might be that the DMA state machine |
| 142 | * got confused. Fix from Todd Inglett. Details from Winbond. |
| 143 | * |
| 144 | * This function is called when the IDE timer expires, the drive |
| 145 | * indicates that it is READY, and we were waiting for DMA to complete. |
| 146 | */ |
Sergei Shtylyov | 841d2a9 | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 147 | static void sl82c105_dma_lost_irq(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | { |
Sergei Shtylyov | 688a87d | 2007-05-05 22:03:49 +0200 | [diff] [blame] | 149 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame^] | 150 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
Sergei Shtylyov | 688a87d | 2007-05-05 22:03:49 +0200 | [diff] [blame] | 151 | u32 val, mask = hwif->channel ? CTRL_IDE_IRQB : CTRL_IDE_IRQA; |
| 152 | u8 dma_cmd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | |
Sergei Shtylyov | 688a87d | 2007-05-05 22:03:49 +0200 | [diff] [blame] | 154 | printk("sl82c105: lost IRQ, resetting host\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | |
| 156 | /* |
| 157 | * Check the raw interrupt from the drive. |
| 158 | */ |
| 159 | pci_read_config_dword(dev, 0x40, &val); |
| 160 | if (val & mask) |
| 161 | printk("sl82c105: drive was requesting IRQ, but host lost it\n"); |
| 162 | |
| 163 | /* |
| 164 | * Was DMA enabled? If so, disable it - we're resetting the |
| 165 | * host. The IDE layer will be handling the drive for us. |
| 166 | */ |
Sergei Shtylyov | 688a87d | 2007-05-05 22:03:49 +0200 | [diff] [blame] | 167 | dma_cmd = inb(hwif->dma_command); |
| 168 | if (dma_cmd & 1) { |
| 169 | outb(dma_cmd & ~1, hwif->dma_command); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | printk("sl82c105: DMA was enabled\n"); |
| 171 | } |
| 172 | |
| 173 | sl82c105_reset_host(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | } |
| 175 | |
| 176 | /* |
| 177 | * ATAPI devices can cause the SL82C105 DMA state machine to go gaga. |
| 178 | * Winbond recommend that the DMA state machine is reset prior to |
| 179 | * setting the bus master DMA enable bit. |
| 180 | * |
| 181 | * The generic IDE core will have disabled the BMEN bit before this |
| 182 | * function is called. |
| 183 | */ |
Sergei Shtylyov | 688a87d | 2007-05-05 22:03:49 +0200 | [diff] [blame] | 184 | static void sl82c105_dma_start(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | { |
Sergei Shtylyov | 688a87d | 2007-05-05 22:03:49 +0200 | [diff] [blame] | 186 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame^] | 187 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
Bartlomiej Zolnierkiewicz | 6ae8b1e | 2008-01-26 20:12:58 +0100 | [diff] [blame] | 188 | int reg = 0x44 + drive->dn * 4; |
| 189 | |
| 190 | DBG(("%s(drive:%s)\n", __FUNCTION__, drive->name)); |
| 191 | |
| 192 | pci_write_config_word(dev, reg, drive->drive_data >> 16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | |
| 194 | sl82c105_reset_host(dev); |
| 195 | ide_dma_start(drive); |
| 196 | } |
| 197 | |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 198 | static void sl82c105_dma_timeout(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | { |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame^] | 200 | struct pci_dev *dev = to_pci_dev(drive->hwif->dev); |
| 201 | |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 202 | DBG(("sl82c105_dma_timeout(drive:%s)\n", drive->name)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame^] | 204 | sl82c105_reset_host(dev); |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 205 | ide_dma_timeout(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | } |
| 207 | |
Bartlomiej Zolnierkiewicz | 6ae8b1e | 2008-01-26 20:12:58 +0100 | [diff] [blame] | 208 | static int sl82c105_dma_end(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | { |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame^] | 210 | struct pci_dev *dev = to_pci_dev(drive->hwif->dev); |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame] | 211 | int reg = 0x44 + drive->dn * 4; |
Bartlomiej Zolnierkiewicz | 6ae8b1e | 2008-01-26 20:12:58 +0100 | [diff] [blame] | 212 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | |
Bartlomiej Zolnierkiewicz | 6ae8b1e | 2008-01-26 20:12:58 +0100 | [diff] [blame] | 214 | DBG(("%s(drive:%s)\n", __FUNCTION__, drive->name)); |
| 215 | |
| 216 | ret = __ide_dma_end(drive); |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 217 | |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame] | 218 | pci_write_config_word(dev, reg, drive->drive_data); |
| 219 | |
Bartlomiej Zolnierkiewicz | 6ae8b1e | 2008-01-26 20:12:58 +0100 | [diff] [blame] | 220 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | } |
| 222 | |
| 223 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | * ATA reset will clear the 16 bits mode in the control |
Bartlomiej Zolnierkiewicz | 0859055 | 2008-01-26 20:12:59 +0100 | [diff] [blame] | 225 | * register, we need to reprogram it |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | */ |
| 227 | static void sl82c105_resetproc(ide_drive_t *drive) |
| 228 | { |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame^] | 229 | struct pci_dev *dev = to_pci_dev(drive->hwif->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | u32 val; |
| 231 | |
| 232 | DBG(("sl82c105_resetproc(drive:%s)\n", drive->name)); |
| 233 | |
| 234 | pci_read_config_dword(dev, 0x40, &val); |
Bartlomiej Zolnierkiewicz | 0859055 | 2008-01-26 20:12:59 +0100 | [diff] [blame] | 235 | val |= (CTRL_P1F16 | CTRL_P0F16); |
| 236 | pci_write_config_dword(dev, 0x40, val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | |
| 239 | /* |
| 240 | * Return the revision of the Winbond bridge |
| 241 | * which this function is part of. |
| 242 | */ |
| 243 | static unsigned int sl82c105_bridge_revision(struct pci_dev *dev) |
| 244 | { |
| 245 | struct pci_dev *bridge; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | |
| 247 | /* |
| 248 | * The bridge should be part of the same device, but function 0. |
| 249 | */ |
Alan Cox | 640b31b | 2007-05-16 00:51:46 +0200 | [diff] [blame] | 250 | bridge = pci_get_bus_and_slot(dev->bus->number, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | PCI_DEVFN(PCI_SLOT(dev->devfn), 0)); |
| 252 | if (!bridge) |
| 253 | return -1; |
| 254 | |
| 255 | /* |
| 256 | * Make sure it is a Winbond 553 and is an ISA bridge. |
| 257 | */ |
| 258 | if (bridge->vendor != PCI_VENDOR_ID_WINBOND || |
| 259 | bridge->device != PCI_DEVICE_ID_WINBOND_83C553 || |
Alan Cox | 640b31b | 2007-05-16 00:51:46 +0200 | [diff] [blame] | 260 | bridge->class >> 8 != PCI_CLASS_BRIDGE_ISA) { |
| 261 | pci_dev_put(bridge); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | return -1; |
Alan Cox | 640b31b | 2007-05-16 00:51:46 +0200 | [diff] [blame] | 263 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | /* |
| 265 | * We need to find function 0's revision, not function 1 |
| 266 | */ |
Alan Cox | 640b31b | 2007-05-16 00:51:46 +0200 | [diff] [blame] | 267 | pci_dev_put(bridge); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | |
Auke Kok | 44c1013 | 2007-06-08 15:46:36 -0700 | [diff] [blame] | 269 | return bridge->revision; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | } |
| 271 | |
| 272 | /* |
| 273 | * Enable the PCI device |
| 274 | * |
| 275 | * --BenH: It's arch fixup code that should enable channels that |
| 276 | * have not been enabled by firmware. I decided we can still enable |
| 277 | * channel 0 here at least, but channel 1 has to be enabled by |
| 278 | * firmware or arch code. We still set both to 16 bits mode. |
| 279 | */ |
Herbert Xu | 34a6224 | 2005-07-03 16:36:56 +0200 | [diff] [blame] | 280 | 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] | 281 | { |
| 282 | u32 val; |
| 283 | |
| 284 | DBG(("init_chipset_sl82c105()\n")); |
| 285 | |
| 286 | pci_read_config_dword(dev, 0x40, &val); |
| 287 | val |= CTRL_P0EN | CTRL_P0F16 | CTRL_P1F16; |
| 288 | pci_write_config_dword(dev, 0x40, val); |
| 289 | |
| 290 | return dev->irq; |
| 291 | } |
| 292 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | /* |
Sergei Shtylyov | 688a87d | 2007-05-05 22:03:49 +0200 | [diff] [blame] | 294 | * Initialise IDE channel |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | */ |
Herbert Xu | 34a6224 | 2005-07-03 16:36:56 +0200 | [diff] [blame] | 296 | static void __devinit init_hwif_sl82c105(ide_hwif_t *hwif) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | { |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame^] | 298 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
Russell King | 9648f55 | 2005-11-12 16:57:29 +0000 | [diff] [blame] | 299 | unsigned int rev; |
Sergei Shtylyov | dd607d2 | 2006-12-08 02:40:01 -0800 | [diff] [blame] | 300 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | DBG(("init_hwif_sl82c105(hwif: ide%d)\n", hwif->index)); |
| 302 | |
Bartlomiej Zolnierkiewicz | 26bcb87 | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 303 | hwif->set_pio_mode = &sl82c105_set_pio_mode; |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 304 | hwif->set_dma_mode = &sl82c105_set_dma_mode; |
Sergei Shtylyov | e93df70 | 2007-05-05 22:03:49 +0200 | [diff] [blame] | 305 | hwif->resetproc = &sl82c105_resetproc; |
Sergei Shtylyov | dd607d2 | 2006-12-08 02:40:01 -0800 | [diff] [blame] | 306 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | if (!hwif->dma_base) |
| 308 | return; |
| 309 | |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame^] | 310 | rev = sl82c105_bridge_revision(dev); |
Russell King | 9648f55 | 2005-11-12 16:57:29 +0000 | [diff] [blame] | 311 | if (rev <= 5) { |
| 312 | /* |
| 313 | * Never ever EVER under any circumstances enable |
| 314 | * DMA when the bridge is this old. |
| 315 | */ |
Sergei Shtylyov | 688a87d | 2007-05-05 22:03:49 +0200 | [diff] [blame] | 316 | printk(" %s: Winbond W83C553 bridge revision %d, " |
| 317 | "BM-DMA disabled\n", hwif->name, rev); |
| 318 | return; |
Russell King | 9648f55 | 2005-11-12 16:57:29 +0000 | [diff] [blame] | 319 | } |
Sergei Shtylyov | 688a87d | 2007-05-05 22:03:49 +0200 | [diff] [blame] | 320 | |
Bartlomiej Zolnierkiewicz | 5f8b6c3 | 2007-10-19 00:30:07 +0200 | [diff] [blame] | 321 | hwif->mwdma_mask = ATA_MWDMA2; |
Sergei Shtylyov | 688a87d | 2007-05-05 22:03:49 +0200 | [diff] [blame] | 322 | |
Sergei Shtylyov | 841d2a9 | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 323 | hwif->dma_lost_irq = &sl82c105_dma_lost_irq; |
Sergei Shtylyov | 688a87d | 2007-05-05 22:03:49 +0200 | [diff] [blame] | 324 | hwif->dma_start = &sl82c105_dma_start; |
Bartlomiej Zolnierkiewicz | 6ae8b1e | 2008-01-26 20:12:58 +0100 | [diff] [blame] | 325 | hwif->ide_dma_end = &sl82c105_dma_end; |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 326 | hwif->dma_timeout = &sl82c105_dma_timeout; |
Sergei Shtylyov | 688a87d | 2007-05-05 22:03:49 +0200 | [diff] [blame] | 327 | |
Sergei Shtylyov | 688a87d | 2007-05-05 22:03:49 +0200 | [diff] [blame] | 328 | if (hwif->mate) |
| 329 | hwif->serialized = hwif->mate->serialized = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | } |
| 331 | |
Bartlomiej Zolnierkiewicz | 8562043 | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 332 | static const struct ide_port_info sl82c105_chipset __devinitdata = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | .name = "W82C105", |
| 334 | .init_chipset = init_chipset_sl82c105, |
| 335 | .init_hwif = init_hwif_sl82c105, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | .enablebits = {{0x40,0x01,0x01}, {0x40,0x10,0x10}}, |
Bartlomiej Zolnierkiewicz | caea760 | 2007-10-20 00:32:30 +0200 | [diff] [blame] | 337 | .host_flags = IDE_HFLAG_IO_32BIT | |
| 338 | IDE_HFLAG_UNMASK_IRQS | |
| 339 | IDE_HFLAG_NO_AUTODMA | |
| 340 | IDE_HFLAG_BOOTABLE, |
Bartlomiej Zolnierkiewicz | 4099d14 | 2007-07-20 01:11:59 +0200 | [diff] [blame] | 341 | .pio_mask = ATA_PIO5, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | }; |
| 343 | |
| 344 | static int __devinit sl82c105_init_one(struct pci_dev *dev, const struct pci_device_id *id) |
| 345 | { |
| 346 | return ide_setup_pci_device(dev, &sl82c105_chipset); |
| 347 | } |
| 348 | |
Bartlomiej Zolnierkiewicz | 9cbcc5e | 2007-10-16 22:29:56 +0200 | [diff] [blame] | 349 | static const struct pci_device_id sl82c105_pci_tbl[] = { |
| 350 | { PCI_VDEVICE(WINBOND, PCI_DEVICE_ID_WINBOND_82C105), 0 }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | { 0, }, |
| 352 | }; |
| 353 | MODULE_DEVICE_TABLE(pci, sl82c105_pci_tbl); |
| 354 | |
| 355 | static struct pci_driver driver = { |
| 356 | .name = "W82C105_IDE", |
| 357 | .id_table = sl82c105_pci_tbl, |
| 358 | .probe = sl82c105_init_one, |
| 359 | }; |
| 360 | |
Bartlomiej Zolnierkiewicz | 82ab1ee | 2007-01-27 13:46:56 +0100 | [diff] [blame] | 361 | static int __init sl82c105_ide_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | { |
| 363 | return ide_pci_register_driver(&driver); |
| 364 | } |
| 365 | |
| 366 | module_init(sl82c105_ide_init); |
| 367 | |
| 368 | MODULE_DESCRIPTION("PCI driver module for W82C105 IDE"); |
| 369 | MODULE_LICENSE("GPL"); |