/* * linux/drivers/ide/pci/alim15x3.c Version 0.17 2003/01/02 * * Copyright (C) 1998-2000 Michel Aubry, Maintainer * Copyright (C) 1998-2000 Andrzej Krzysztofowicz, Maintainer * Copyright (C) 1999-2000 CJ, cjtsai@ali.com.tw, Maintainer * * Copyright (C) 1998-2000 Andre Hedrick (andre@linux-ide.org) * May be copied or modified under the terms of the GNU General Public License * Copyright (C) 2002 Alan Cox * ALi (now ULi M5228) support by Clear Zhang * * (U)DMA capable version of ali 1533/1543(C), 1535(D) * ********************************************************************** * 9/7/99 --Parts from the above author are included and need to be * converted into standard interface, once I finish the thought. * * Recent changes * Don't use LBA48 mode on ALi <= 0xC4 * Don't poke 0x79 with a non ALi northbridge * Don't flip undefined bits on newer chipsets (fix Fujitsu laptop hang) * Allow UDMA6 on revisions > 0xC4 * * Documentation * Chipset documentation available under NDA only * */ #include #include #include #include #include #include #include #include #include #include #define DISPLAY_ALI_TIMINGS /* * ALi devices are not plug in. Otherwise these static values would * need to go. They ought to go away anyway */ static u8 m5229_revision; static u8 chip_is_1543c_e; static struct pci_dev *isa_dev; #if defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_PROC_FS) #include #include static u8 ali_proc = 0; static struct pci_dev *bmide_dev; static char *fifo[4] = { "FIFO Off", "FIFO On ", "DMA mode", "PIO mode" }; static char *udmaT[8] = { "1.5T", " 2T", "2.5T", " 3T", "3.5T", " 4T", " 6T", " 8T" }; static char *channel_status[8] = { "OK ", "busy ", "DRQ ", "DRQ busy ", "error ", "error busy ", "error DRQ ", "error DRQ busy" }; /** * ali_get_info - generate proc file for ALi IDE * @buffer: buffer to fill * @addr: address of user start in buffer * @offset: offset into 'file' * @count: buffer count * * Walks the Ali devices and outputs summary data on the tuning and * anything else that will help with debugging */ static int ali_get_info (char *buffer, char **addr, off_t offset, int count) { unsigned long bibma; u8 reg53h, reg5xh, reg5yh, reg5xh1, reg5yh1, c0, c1, rev, tmp; char *q, *p = buffer; /* fetch rev. */ pci_read_config_byte(bmide_dev, 0x08, &rev); if (rev >= 0xc1) /* M1543C or newer */ udmaT[7] = " ???"; else fifo[3] = " ??? "; /* first fetch bibma: */ bibma = pci_resource_start(bmide_dev, 4); /* * at that point bibma+0x2 et bibma+0xa are byte * registers to investigate: */ c0 = inb(bibma + 0x02); c1 = inb(bibma + 0x0a); p += sprintf(p, "\n Ali M15x3 Chipset.\n"); p += sprintf(p, " ------------------\n"); pci_read_config_byte(bmide_dev, 0x78, ®53h); p += sprintf(p, "PCI Clock: %d.\n", reg53h); pci_read_config_byte(bmide_dev, 0x53, ®53h); p += sprintf(p, "CD_ROM FIFO:%s, CD_ROM DMA:%s\n", (reg53h & 0x02) ? "Yes" : "No ", (reg53h & 0x01) ? "Yes" : "No " ); pci_read_config_byte(bmide_dev, 0x74, ®53h); p += sprintf(p, "FIFO Status: contains %d Words, runs%s%s\n\n", (reg53h & 0x3f), (reg53h & 0x40) ? " OVERWR" : "", (reg53h & 0x80) ? " OVERRD." : "." ); p += sprintf(p, "-------------------primary channel" "-------------------secondary channel" "---------\n\n"); pci_read_config_byte(bmide_dev, 0x09, ®53h); p += sprintf(p, "channel status: %s" " %s\n", (reg53h & 0x20) ? "On " : "Off", (reg53h & 0x10) ? "On " : "Off" ); p += sprintf(p, "both channels togth: %s" " %s\n", (c0&0x80) ? "No " : "Yes", (c1&0x80) ? "No " : "Yes" ); pci_read_config_byte(bmide_dev, 0x76, ®53h); p += sprintf(p, "Channel state: %s %s\n", channel_status[reg53h & 0x07], channel_status[(reg53h & 0x70) >> 4] ); pci_read_config_byte(bmide_dev, 0x58, ®5xh); pci_read_config_byte(bmide_dev, 0x5c, ®5yh); p += sprintf(p, "Add. Setup Timing: %dT" " %dT\n", (reg5xh & 0x07) ? (reg5xh & 0x07) : 8, (reg5yh & 0x07) ? (reg5yh & 0x07) : 8 ); pci_read_config_byte(bmide_dev, 0x59, ®5xh); pci_read_config_byte(bmide_dev, 0x5d, ®5yh); p += sprintf(p, "Command Act. Count: %dT" " %dT\n" "Command Rec. Count: %dT" " %dT\n\n", (reg5xh & 0x70) ? ((reg5xh & 0x70) >> 4) : 8, (reg5yh & 0x70) ? ((reg5yh & 0x70) >> 4) : 8, (reg5xh & 0x0f) ? (reg5xh & 0x0f) : 16, (reg5yh & 0x0f) ? (reg5yh & 0x0f) : 16 ); p += sprintf(p, "----------------drive0-----------drive1" "------------drive0-----------drive1------\n\n"); p += sprintf(p, "DMA enabled: %s %s" " %s %s\n", (c0&0x20) ? "Yes" : "No ", (c0&0x40) ? "Yes" : "No ", (c1&0x20) ? "Yes" : "No ", (c1&0x40) ? "Yes" : "No " ); pci_read_config_byte(bmide_dev, 0x54, ®5xh); pci_read_config_byte(bmide_dev, 0x55, ®5yh); q = "FIFO threshold: %2d Words %2d Words" " %2d Words %2d Words\n"; if (rev < 0xc1) { if ((rev == 0x20) && (pci_read_config_byte(bmide_dev, 0x4f, &tmp), (tmp &= 0x20))) { p += sprintf(p, q, 8, 8, 8, 8); } else { p += sprintf(p, q, (reg5xh & 0x03) + 12, ((reg5xh & 0x30)>>4) + 12, (reg5yh & 0x03) + 12, ((reg5yh & 0x30)>>4) + 12 ); } } else { int t1 = (tmp = (reg5xh & 0x03)) ? (tmp << 3) : 4; int t2 = (tmp = ((reg5xh & 0x30)>>4)) ? (tmp << 3) : 4; int t3 = (tmp = (reg5yh & 0x03)) ? (tmp << 3) : 4; int t4 = (tmp = ((reg5yh & 0x30)>>4)) ? (tmp << 3) : 4; p += sprintf(p, q, t1, t2, t3, t4); } #if 0 p += sprintf(p, "FIFO threshold: %2d Words %2d Words" " %2d Words %2d Words\n", (reg5xh & 0x03) + 12, ((reg5xh & 0x30)>>4) + 12, (reg5yh & 0x03) + 12, ((reg5yh & 0x30)>>4) + 12 ); #endif p += sprintf(p, "FIFO mode: %s %s %s %s\n", fifo[((reg5xh & 0x0c) >> 2)], fifo[((reg5xh & 0xc0) >> 6)], fifo[((reg5yh & 0x0c) >> 2)], fifo[((reg5yh & 0xc0) >> 6)] ); pci_read_config_byte(bmide_dev, 0x5a, ®5xh); pci_read_config_byte(bmide_dev, 0x5b, ®5xh1); pci_read_config_byte(bmide_dev, 0x5e, ®5yh); pci_read_config_byte(bmide_dev, 0x5f, ®5yh1); p += sprintf(p,/* "------------------drive0-----------drive1" "------------drive0-----------drive1------\n")*/ "Dt RW act. Cnt %2dT %2dT" " %2dT %2dT\n" "Dt RW rec. Cnt %2dT %2dT" " %2dT %2dT\n\n", (reg5xh & 0x70) ? ((reg5xh & 0x70) >> 4) : 8, (reg5xh1 & 0x70) ? ((reg5xh1 & 0x70) >> 4) : 8, (reg5yh & 0x70) ? ((reg5yh & 0x70) >> 4) : 8, (reg5yh1 & 0x70) ? ((reg5yh1 & 0x70) >> 4) : 8, (reg5xh & 0x0f) ? (reg5xh & 0x0f) : 16, (reg5xh1 & 0x0f) ? (reg5xh1 & 0x0f) : 16, (reg5yh & 0x0f) ? (reg5yh & 0x0f) : 16, (reg5yh1 & 0x0f) ? (reg5yh1 & 0x0f) : 16 ); p += sprintf(p, "-----------------------------------UDMA Timings" "--------------------------------\n\n"); pci_read_config_byte(bmide_dev, 0x56, ®5xh); pci_read_config_byte(bmide_dev, 0x57, ®5yh); p += sprintf(p, "UDMA: %s %s" " %s %s\n" "UDMA timings: %s %s" " %s %s\n\n", (reg5xh & 0x08) ? "OK" : "No", (reg5xh & 0x80) ? "OK" : "No", (reg5yh & 0x08) ? "OK" : "No", (reg5yh & 0x80) ? "OK" : "No", udmaT[(reg5xh & 0x07)], udmaT[(reg5xh & 0x70) >> 4], udmaT[reg5yh & 0x07], udmaT[(reg5yh & 0x70) >> 4] ); return p-buffer; /* => must be less than 4k! */ } #endif /* defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_PROC_FS) */ /** * ali15x3_tune_drive - set up a drive * @drive: drive to tune * @pio: unused * * Select the best PIO timing for the drive in question. Then * program the controller for this drive set up */ static void ali15x3_tune_drive (ide_drive_t *drive, u8 pio) { ide_pio_data_t d; ide_hwif_t *hwif = HWIF(drive); struct pci_dev *dev = hwif->pci_dev; int s_time, a_time, c_time; u8 s_clc, a_clc, r_clc; unsigned long flags; int bus_speed = system_bus_clock(); int port = hwif->channel ? 0x5c : 0x58; int portFIFO = hwif->channel ? 0x55 : 0x54; u8 cd_dma_fifo = 0; int unit = drive->select.b.unit & 1; pio = ide_get_best_pio_mode(drive, pio, 5, &d); s_time = ide_pio_timings[pio].setup_time; a_time = ide_pio_timings[pio].active_time; if ((s_clc = (s_time * bus_speed + 999) / 1000) >= 8) s_clc = 0; if ((a_clc = (a_time * bus_speed + 999) / 1000) >= 8) a_clc = 0; c_time = ide_pio_timings[pio].cycle_time; #if 0 if ((r_clc = ((c_time - s_time - a_time) * bus_speed + 999) / 1000) >= 16) r_clc = 0; #endif if (!(r_clc = (c_time * bus_speed + 999) / 1000 - a_clc - s_clc)) { r_clc = 1; } else { if (r_clc >= 16) r_clc = 0; } local_irq_save(flags); /* * PIO mode => ATA FIFO on, ATAPI FIFO off */ pci_read_config_byte(dev, portFIFO, &cd_dma_fifo); if (drive->media==ide_disk) { if (unit) { pci_write_config_byte(dev, portFIFO, (cd_dma_fifo & 0x0F) | 0x50); } else { pci_write_config_byte(dev, portFIFO, (cd_dma_fifo & 0xF0) | 0x05); } } else { if (unit) { pci_write_config_byte(dev, portFIFO, cd_dma_fifo & 0x0F); } else { pci_write_config_byte(dev, portFIFO, cd_dma_fifo & 0xF0); } } pci_write_config_byte(dev, port, s_clc); pci_write_config_byte(dev, port+drive->select.b.unit+2, (a_clc << 4) | r_clc); local_irq_restore(flags); /* * setup active rec * { 70, 165, 365 }, PIO Mode 0 * { 50, 125, 208 }, PIO Mode 1 * { 30, 100, 110 }, PIO Mode 2 * { 30, 80, 70 }, PIO Mode 3 with IORDY * { 25, 70, 25 }, PIO Mode 4 with IORDY ns * { 20, 50, 30 } PIO Mode 5 with IORDY (nonstandard) */ } /** * ali15x3_can_ultra - check for ultra DMA support * @drive: drive to do the check * * Check the drive and controller revisions. Return 0 if UDMA is * not available, or 1 if UDMA can be used. The actual rules for * the ALi are * No UDMA on revisions <= 0x20 * Disk only for revisions < 0xC2 * Not WDC drives for revisions < 0xC2 * * FIXME: WDC ifdef needs to die */ static u8 ali15x3_can_ultra (ide_drive_t *drive) { #ifndef CONFIG_WDC_ALI15X3 struct hd_driveid *id = drive->id; #endif /* CONFIG_WDC_ALI15X3 */ if (m5229_revision <= 0x20) { return 0; } else if ((m5229_revision < 0xC2) && #ifndef CONFIG_WDC_ALI15X3 ((chip_is_1543c_e && strstr(id->model, "WDC ")) || (drive->media!=ide_disk))) { #else /* CONFIG_WDC_ALI15X3 */ (drive->media!=ide_disk)) { #endif /* CONFIG_WDC_ALI15X3 */ return 0; } else { return 1; } } /** * ali15x3_ratemask - generate DMA mode list * @drive: drive to compute against * * Generate a list of the available DMA modes for the drive. * FIXME: this function contains lots of bogus masking we can dump * * Return the highest available mode (UDMA33, UDMA66, UDMA100,..) */ static u8 ali15x3_ratemask (ide_drive_t *drive) { u8 mode = 0, can_ultra = ali15x3_can_ultra(drive); if (m5229_revision > 0xC4 && can_ultra) { mode = 4; } else if (m5229_revision == 0xC4 && can_ultra) { mode = 3; } else if (m5229_revision >= 0xC2 && can_ultra) { mode = 2; } else if (can_ultra) { return 1; } else { return 0; } /* * If the drive sees no suitable cable then UDMA 33 * is the highest permitted mode */ if (!eighty_ninty_three(drive)) mode = min(mode, (u8)1); return mode; } /** * ali15x3_tune_chipset - set up chiset for new speed * @drive: drive to configure for * @xferspeed: desired speed * * Configure the hardware for the desired IDE transfer mode. * We also do the needed drive configuration through helpers */ static int ali15x3_tune_chipset (ide_drive_t *drive, u8 xferspeed) { ide_hwif_t *hwif = HWIF(drive); struct pci_dev *dev = hwif->pci_dev; u8 speed = ide_rate_filter(ali15x3_ratemask(drive), xferspeed); u8 speed1 = speed; u8 unit = (drive->select.b.unit & 0x01); u8 tmpbyte = 0x00; int m5229_udma = (hwif->channel) ? 0x57 : 0x56; if (speed == XFER_UDMA_6) speed1 = 0x47; if (speed < XFER_UDMA_0) { u8 ultra_enable = (unit) ? 0x7f : 0xf7; /* * clear "ultra enable" bit */ pci_read_config_byte(dev, m5229_udma, &tmpbyte); tmpbyte &= ultra_enable; pci_write_config_byte(dev, m5229_udma, tmpbyte); if (speed < XFER_SW_DMA_0) ali15x3_tune_drive(drive, speed); } else { pci_read_config_byte(dev, m5229_udma, &tmpbyte); tmpbyte &= (0x0f << ((1-unit) << 2)); /* * enable ultra dma and set timing */ tmpbyte |= ((0x08 | ((4-speed1)&0x07)) << (unit << 2)); pci_write_config_byte(dev, m5229_udma, tmpbyte); if (speed >= XFER_UDMA_3) { pci_read_config_byte(dev, 0x4b, &tmpbyte); tmpbyte |= 1; pci_write_config_byte(dev, 0x4b, tmpbyte); } } return (ide_config_drive_speed(drive, speed)); } /** * config_chipset_for_dma - set up DMA mode * @drive: drive to configure for * * Place a drive into DMA mode and tune the chipset for * the selected speed. * * Returns true if DMA mode can be used */ static int config_chipset_for_dma (ide_drive_t *drive) { u8 speed = ide_dma_speed(drive, ali15x3_ratemask(drive)); if (!(speed)) return 0; (void) ali15x3_tune_chipset(drive, speed); return ide_dma_enable(drive); } /** * ali15x3_config_drive_for_dma - configure for DMA * @drive: drive to configure * * Configure a drive for DMA operation. If DMA is not possible we * drop the drive into PIO mode instead. * * FIXME: exactly what are we trying to return here */ static int ali15x3_config_drive_for_dma(ide_drive_t *drive) { ide_hwif_t *hwif = HWIF(drive); struct hd_driveid *id = drive->id; if ((m5229_revision<=0x20) && (drive->media!=ide_disk)) return hwif->ide_dma_off_quietly(drive); drive->init_speed = 0; if ((id != NULL) && ((id->capability & 1) != 0) && drive->autodma) { /* Consult the list of known "bad" drives */ if (__ide_dma_bad_drive(drive)) goto ata_pio; if ((id->field_valid & 4) && (m5229_revision >= 0xC2)) { if (id->dma_ultra & hwif->ultra_mask) { /* Force if Capable UltraDMA */ int dma = config_chipset_for_dma(drive); if ((id->field_valid & 2) && !dma) goto try_dma_modes; } } else if (id->field_valid & 2) { try_dma_modes: if ((id->dma_mword & hwif->mwdma_mask) || (id->dma_1word & hwif->swdma_mask)) { /* Force if Capable regular DMA modes */ if (!config_chipset_for_dma(drive)) goto no_dma_set; } } else if (__ide_dma_good_drive(drive) && (id->eide_dma_time < 150)) { /* Consult the list of known "good" drives */ if (!config_chipset_for_dma(drive)) goto no_dma_set; } else { goto ata_pio; } } else { ata_pio: hwif->tuneproc(drive, 255); no_dma_set: return hwif->ide_dma_off_quietly(drive); } return hwif->ide_dma_on(drive); } /** * ali15x3_dma_setup - begin a DMA phase * @drive: target device * * Returns 1 if the DMA cannot be performed, zero on success. */ static int ali15x3_dma_setup(ide_drive_t *drive) { if (m5229_revision < 0xC2 && drive->media != ide_disk) { if (rq_data_dir(drive->hwif->hwgroup->rq)) return 1; /* try PIO instead of DMA */ } return ide_dma_setup(drive); } /** * init_chipset_ali15x3 - Initialise an ALi IDE controller * @dev: PCI device * @name: Name of the controller * * This function initializes the ALI IDE controller and where * appropriate also sets up the 1533 southbridge. */ static unsigned int __devinit init_chipset_ali15x3 (struct pci_dev *dev, const char *name) { unsigned long flags; u8 tmpbyte; struct pci_dev *north = pci_find_slot(0, PCI_DEVFN(0,0)); pci_read_config_byte(dev, PCI_REVISION_ID, &m5229_revision); isa_dev = pci_find_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL); #if defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_PROC_FS) if (!ali_proc) { ali_proc = 1; bmide_dev = dev; ide_pci_create_host_proc("ali", ali_get_info); } #endif /* defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_PROC_FS) */ local_irq_save(flags); if (m5229_revision < 0xC2) { /* * revision 0x20 (1543-E, 1543-F) * revision 0xC0, 0xC1 (1543C-C, 1543C-D, 1543C-E) * clear CD-ROM DMA write bit, m5229, 0x4b, bit 7 */ pci_read_config_byte(dev, 0x4b, &tmpbyte); /* * clear bit 7 */ pci_write_config_byte(dev, 0x4b, tmpbyte & 0x7F); local_irq_restore(flags); return 0; } /* * 1543C-B?, 1535, 1535D, 1553 * Note 1: not all "motherboard" support this detection * Note 2: if no udma 66 device, the detection may "error". * but in this case, we will not set the device to * ultra 66, the detection result is not important */ /* * enable "Cable Detection", m5229, 0x4b, bit3 */ pci_read_config_byte(dev, 0x4b, &tmpbyte); pci_write_config_byte(dev, 0x4b, tmpbyte | 0x08); /* * We should only tune the 1533 enable if we are using an ALi * North bridge. We might have no north found on some zany * box without a device at 0:0.0. The ALi bridge will be at * 0:0.0 so if we didn't find one we know what is cooking. */ if (north && north->vendor != PCI_VENDOR_ID_AL) { local_irq_restore(flags); return 0; } if (m5229_revision < 0xC5 && isa_dev) { /* * set south-bridge's enable bit, m1533, 0x79 */ pci_read_config_byte(isa_dev, 0x79, &tmpbyte); if (m5229_revision == 0xC2) { /* * 1543C-B0 (m1533, 0x79, bit 2) */ pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x04); } else if (m5229_revision >= 0xC3) { /* * 1553/1535 (m1533, 0x79, bit 1) */ pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x02); } } local_irq_restore(flags); return 0; } /** * ata66_ali15x3 - check for UDMA 66 support * @hwif: IDE interface * * This checks if the controller and the cable are capable * of UDMA66 transfers. It doesn't check the drives. * But see note 2 below! * * FIXME: frobs bits that are not defined on newer ALi devicea */ static unsigned int __devinit ata66_ali15x3 (ide_hwif_t *hwif) { struct pci_dev *dev = hwif->pci_dev; unsigned int ata66 = 0; u8 cable_80_pin[2] = { 0, 0 }; unsigned long flags; u8 tmpbyte; local_irq_save(flags); if (m5229_revision >= 0xC2) { /* * Ultra66 cable detection (from Host View) * m5229, 0x4a, bit0: primary, bit1: secondary 80 pin */ pci_read_config_byte(dev, 0x4a, &tmpbyte); /* * 0x4a, bit0 is 0 => primary channel * has 80-pin (from host view) */ if (!(tmpbyte & 0x01)) cable_80_pin[0] = 1; /* * 0x4a, bit1 is 0 => secondary channel * has 80-pin (from host view) */ if (!(tmpbyte & 0x02)) cable_80_pin[1] = 1; /* * Allow ata66 if cable of current channel has 80 pins */ ata66 = (hwif->channel)?cable_80_pin[1]:cable_80_pin[0]; } else { /* * check m1533, 0x5e, bit 1~4 == 1001 => & 00011110 = 00010010 */ pci_read_config_byte(isa_dev, 0x5e, &tmpbyte); chip_is_1543c_e = ((tmpbyte & 0x1e) == 0x12) ? 1: 0; } /* * CD_ROM DMA on (m5229, 0x53, bit0) * Enable this bit even if we want to use PIO * PIO FIFO off (m5229, 0x53, bit1) * The hardware will use 0x54h and 0x55h to control PIO FIFO * (Not on later devices it seems) * * 0x53 changes meaning on later revs - we must no touch * bit 1 on them. Need to check if 0x20 is the right break */ pci_read_config_byte(dev, 0x53, &tmpbyte); if(m5229_revision <= 0x20) tmpbyte = (tmpbyte & (~0x02)) | 0x01; else tmpbyte |= 0x01; pci_write_config_byte(dev, 0x53, tmpbyte); local_irq_restore(flags); return(ata66); } /** * init_hwif_common_ali15x3 - Set up ALI IDE hardware * @hwif: IDE interface * * Initialize the IDE structure side of the ALi 15x3 driver. */ static void __devinit init_hwif_common_ali15x3 (ide_hwif_t *hwif) { hwif->autodma = 0; hwif->tuneproc = &ali15x3_tune_drive; hwif->speedproc = &ali15x3_tune_chipset; /* don't use LBA48 DMA on ALi devices before rev 0xC5 */ hwif->no_lba48_dma = (m5229_revision <= 0xC4) ? 1 : 0; if (!hwif->dma_base) { hwif->drives[0].autotune = 1; hwif->drives[1].autotune = 1; return; } hwif->atapi_dma = 1; if (m5229_revision > 0x20) hwif->ultra_mask = 0x7f; hwif->mwdma_mask = 0x07; hwif->swdma_mask = 0x07; if (m5229_revision >= 0x20) { /* * M1543C or newer for DMAing */ hwif->ide_dma_check = &ali15x3_config_drive_for_dma; hwif->dma_setup = &ali15x3_dma_setup; if (!noautodma) hwif->autodma = 1; if (!(hwif->udma_four)) hwif->udma_four = ata66_ali15x3(hwif); } hwif->drives[0].autodma = hwif->autodma; hwif->drives[1].autodma = hwif->autodma; } /** * init_hwif_ali15x3 - Initialize the ALI IDE x86 stuff * @hwif: interface to configure * * Obtain the IRQ tables for an ALi based IDE solution on the PC * class platforms. This part of the code isn't applicable to the * Sparc systems */ static void __devinit init_hwif_ali15x3 (ide_hwif_t *hwif) { u8 ideic, inmir; s8 irq_routing_table[] = { -1, 9, 3, 10, 4, 5, 7, 6, 1, 11, 0, 12, 0, 14, 0, 15 }; int irq = -1; if (hwif->pci_dev->device == PCI_DEVICE_ID_AL_M5229) hwif->irq = hwif->channel ? 15 : 14; if (isa_dev) { /* * read IDE interface control */ pci_read_config_byte(isa_dev, 0x58, &ideic); /* bit0, bit1 */ ideic = ideic & 0x03; /* get IRQ for IDE Controller */ if ((hwif->channel && ideic == 0x03) || (!hwif->channel && !ideic)) { /* * get SIRQ1 routing table */ pci_read_config_byte(isa_dev, 0x44, &inmir); inmir = inmir & 0x0f; irq = irq_routing_table[inmir]; } else if (hwif->channel && !(ideic & 0x01)) { /* * get SIRQ2 routing table */ pci_read_config_byte(isa_dev, 0x75, &inmir); inmir = inmir & 0x0f; irq = irq_routing_table[inmir]; } if(irq >= 0) hwif->irq = irq; } init_hwif_common_ali15x3(hwif); } /** * init_dma_ali15x3 - set up DMA on ALi15x3 * @hwif: IDE interface * @dmabase: DMA interface base PCI address * * Set up the DMA functionality on the ALi 15x3. For the ALi * controllers this is generic so we can let the generic code do * the actual work. */ static void __devinit init_dma_ali15x3 (ide_hwif_t *hwif, unsigned long dmabase) { if (m5229_revision < 0x20) return; if (!(hwif->channel)) hwif->OUTB(hwif->INB(dmabase+2) & 0x60, dmabase+2); ide_setup_dma(hwif, dmabase, 8); } static ide_pci_device_t ali15x3_chipset __devinitdata = { .name = "ALI15X3", .init_chipset = init_chipset_ali15x3, .init_hwif = init_hwif_ali15x3, .init_dma = init_dma_ali15x3, .channels = 2, .autodma = AUTODMA, .bootable = ON_BOARD, }; /** * alim15x3_init_one - set up an ALi15x3 IDE controller * @dev: PCI device to set up * * Perform the actual set up for an ALi15x3 that has been found by the * hot plug layer. */ static int __devinit alim15x3_init_one(struct pci_dev *dev, const struct pci_device_id *id) { static struct pci_device_id ati_rs100[] = { { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100) }, { }, }; ide_pci_device_t *d = &ali15x3_chipset; if (pci_dev_present(ati_rs100)) printk(KERN_WARNING "alim15x3: ATI Radeon IGP Northbridge is not yet fully tested.\n"); #if defined(CONFIG_SPARC64) d->init_hwif = init_hwif_common_ali15x3; #endif /* CONFIG_SPARC64 */ return ide_setup_pci_device(dev, d); } static struct pci_device_id alim15x3_pci_tbl[] = { { PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M5229, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, { PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M5228, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, { 0, }, }; MODULE_DEVICE_TABLE(pci, alim15x3_pci_tbl); static struct pci_driver driver = { .name = "ALI15x3_IDE", .id_table = alim15x3_pci_tbl, .probe = alim15x3_init_one, }; static int ali15x3_ide_init(void) { return ide_pci_register_driver(&driver); } module_init(ali15x3_ide_init); MODULE_AUTHOR("Michael Aubry, Andrzej Krzysztofowicz, CJ, Andre Hedrick, Alan Cox"); MODULE_DESCRIPTION("PCI driver module for ALi 15x3 IDE"); MODULE_LICENSE("GPL");