/* * 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 <Clear.Zhang@ali.com.tw> * Copyright (C) 2007 MontaVista Software, Inc. <source@mvista.com> * Copyright (C) 2007 Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> * * (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 <linux/module.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/pci.h> #include <linux/ide.h> #include <linux/init.h> #include <linux/dmi.h> #include <asm/io.h> #define DRV_NAME "alim15x3" /* * Allow UDMA on M1543C-E chipset for WDC disks that ignore CRC checking * (this is DANGEROUS and could result in data corruption). */ static int wdc_udma; module_param(wdc_udma, bool, 0); MODULE_PARM_DESC(wdc_udma, "allow UDMA on M1543C-E chipset for WDC disks (DANGEROUS)"); /* * 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; /** * ali_set_pio_mode - set host controller for PIO mode * @drive: drive * @pio: PIO mode number * * Program the controller for the given PIO mode. */ static void ali_set_pio_mode(ide_drive_t *drive, const u8 pio) { ide_hwif_t *hwif = drive->hwif; struct pci_dev *dev = to_pci_dev(hwif->dev); struct ide_timing *t = ide_timing_find_mode(XFER_PIO_0 + pio); int s_time = t->setup, a_time = t->active, c_time = t->cycle; u8 s_clc, a_clc, r_clc; unsigned long flags; int bus_speed = ide_pci_clk ? ide_pci_clk : 33; int port = hwif->channel ? 0x5c : 0x58; int portFIFO = hwif->channel ? 0x55 : 0x54; u8 cd_dma_fifo = 0, unit = drive->dn & 1; 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; 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 + unit + 2, (a_clc << 4) | r_clc); local_irq_restore(flags); } /** * ali_udma_filter - compute UDMA mask * @drive: IDE device * * Return available UDMA modes. * * The actual rules for the ALi are: * No UDMA on revisions <= 0x20 * Disk only for revisions < 0xC2 * Not WDC drives on M1543C-E (?) */ static u8 ali_udma_filter(ide_drive_t *drive) { if (m5229_revision > 0x20 && m5229_revision < 0xC2) { if (drive->media != ide_disk) return 0; if (wdc_udma == 0 && chip_is_1543c_e && strstr((char *)&drive->id[ATA_ID_PROD], "WDC ")) return 0; } return drive->hwif->ultra_mask; } /** * ali_set_dma_mode - set host controller for DMA mode * @drive: drive * @speed: DMA mode * * Configure the hardware for the desired IDE transfer mode. */ static void ali_set_dma_mode(ide_drive_t *drive, const u8 speed) { ide_hwif_t *hwif = drive->hwif; struct pci_dev *dev = to_pci_dev(hwif->dev); u8 speed1 = speed; u8 unit = drive->dn & 1; 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); /* * FIXME: Oh, my... DMA timings are never set. */ } 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); } } } /** * ali_dma_check - DMA check * @drive: target device * @cmd: command * * Returns 1 if the DMA cannot be performed, zero on success. */ static int ali_dma_check(ide_drive_t *drive, struct ide_cmd *cmd) { if (m5229_revision < 0xC2 && drive->media != ide_disk) { if (cmd->tf_flags & IDE_TFLAG_WRITE) return 1; /* try PIO instead of DMA */ } return 0; } /** * init_chipset_ali15x3 - Initialise an ALi IDE controller * @dev: PCI device * * This function initializes the ALI IDE controller and where * appropriate also sets up the 1533 southbridge. */ static int init_chipset_ali15x3(struct pci_dev *dev) { unsigned long flags; u8 tmpbyte; struct pci_dev *north = pci_get_slot(dev->bus, PCI_DEVFN(0,0)); m5229_revision = dev->revision; isa_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL); 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); /* * check m1533, 0x5e, bit 1~4 == 1001 => & 00011110 = 00010010 */ if (m5229_revision >= 0x20 && isa_dev) { pci_read_config_byte(isa_dev, 0x5e, &tmpbyte); chip_is_1543c_e = ((tmpbyte & 0x1e) == 0x12) ? 1: 0; } goto out; } /* * 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) goto out; 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); } } out: /* * 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. */ if (m5229_revision >= 0x20) { pci_read_config_byte(dev, 0x53, &tmpbyte); if (m5229_revision <= 0x20) tmpbyte = (tmpbyte & (~0x02)) | 0x01; else if (m5229_revision == 0xc7 || m5229_revision == 0xc8) tmpbyte |= 0x03; else tmpbyte |= 0x01; pci_write_config_byte(dev, 0x53, tmpbyte); } pci_dev_put(north); pci_dev_put(isa_dev); local_irq_restore(flags); return 0; } /* * Cable special cases */ static const struct dmi_system_id cable_dmi_table[] = { { .ident = "HP Pavilion N5430", .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), DMI_MATCH(DMI_BOARD_VERSION, "OmniBook N32N-736"), }, }, { .ident = "Toshiba Satellite S1800-814", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), DMI_MATCH(DMI_PRODUCT_NAME, "S1800-814"), }, }, { } }; static int ali_cable_override(struct pci_dev *pdev) { /* Fujitsu P2000 */ if (pdev->subsystem_vendor == 0x10CF && pdev->subsystem_device == 0x10AF) return 1; /* Mitac 8317 (Winbook-A) and relatives */ if (pdev->subsystem_vendor == 0x1071 && pdev->subsystem_device == 0x8317) return 1; /* Systems by DMI */ if (dmi_check_system(cable_dmi_table)) return 1; return 0; } /** * ali_cable_detect - cable detection * @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 u8 ali_cable_detect(ide_hwif_t *hwif) { struct pci_dev *dev = to_pci_dev(hwif->dev); unsigned long flags; u8 cbl = ATA_CBL_PATA40, tmpbyte; local_irq_save(flags); if (m5229_revision >= 0xC2) { /* * m5229 80-pin cable detection (from Host View) * * 0x4a bit0 is 0 => primary channel has 80-pin * 0x4a bit1 is 0 => secondary channel has 80-pin * * Certain laptops use short but suitable cables * and don't implement the detect logic. */ if (ali_cable_override(dev)) cbl = ATA_CBL_PATA40_SHORT; else { pci_read_config_byte(dev, 0x4a, &tmpbyte); if ((tmpbyte & (1 << hwif->channel)) == 0) cbl = ATA_CBL_PATA80; } } local_irq_restore(flags); return cbl; } #if !defined(CONFIG_SPARC64) && !defined(CONFIG_PPC) /** * 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 and PowerPC systems. */ static void __devinit init_hwif_ali15x3 (ide_hwif_t *hwif) { struct pci_dev *dev = to_pci_dev(hwif->dev); 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 (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; } } #else #define init_hwif_ali15x3 NULL #endif /* !defined(CONFIG_SPARC64) && !defined(CONFIG_PPC) */ /** * init_dma_ali15x3 - set up DMA on ALi15x3 * @hwif: IDE interface * @d: IDE port info * * Set up the DMA functionality on the ALi 15x3. */ static int __devinit init_dma_ali15x3(ide_hwif_t *hwif, const struct ide_port_info *d) { struct pci_dev *dev = to_pci_dev(hwif->dev); unsigned long base = ide_pci_dma_base(hwif, d); if (base == 0) return -1; hwif->dma_base = base; if (ide_pci_check_simplex(hwif, d) < 0) return -1; if (ide_pci_set_master(dev, d->name) < 0) return -1; if (!hwif->channel) outb(inb(base + 2) & 0x60, base + 2); printk(KERN_INFO " %s: BM-DMA at 0x%04lx-0x%04lx\n", hwif->name, base, base + 7); if (ide_allocate_dma_engine(hwif)) return -1; return 0; } static const struct ide_port_ops ali_port_ops = { .set_pio_mode = ali_set_pio_mode, .set_dma_mode = ali_set_dma_mode, .udma_filter = ali_udma_filter, .cable_detect = ali_cable_detect, }; static const struct ide_dma_ops ali_dma_ops = { .dma_host_set = ide_dma_host_set, .dma_setup = ide_dma_setup, .dma_start = ide_dma_start, .dma_end = ide_dma_end, .dma_test_irq = ide_dma_test_irq, .dma_lost_irq = ide_dma_lost_irq, .dma_check = ali_dma_check, .dma_timer_expiry = ide_dma_sff_timer_expiry, .dma_sff_read_status = ide_dma_sff_read_status, }; static const struct ide_port_info ali15x3_chipset __devinitdata = { .name = DRV_NAME, .init_chipset = init_chipset_ali15x3, .init_hwif = init_hwif_ali15x3, .init_dma = init_dma_ali15x3, .port_ops = &ali_port_ops, .dma_ops = &sff_dma_ops, .pio_mask = ATA_PIO5, .swdma_mask = ATA_SWDMA2, .mwdma_mask = ATA_MWDMA2, }; /** * 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) { struct ide_port_info d = ali15x3_chipset; u8 rev = dev->revision, idx = id->driver_data; /* don't use LBA48 DMA on ALi devices before rev 0xC5 */ if (rev <= 0xC4) d.host_flags |= IDE_HFLAG_NO_LBA48_DMA; if (rev >= 0x20) { if (rev == 0x20) d.host_flags |= IDE_HFLAG_NO_ATAPI_DMA; if (rev < 0xC2) d.udma_mask = ATA_UDMA2; else if (rev == 0xC2 || rev == 0xC3) d.udma_mask = ATA_UDMA4; else if (rev == 0xC4) d.udma_mask = ATA_UDMA5; else d.udma_mask = ATA_UDMA6; d.dma_ops = &ali_dma_ops; } else { d.host_flags |= IDE_HFLAG_NO_DMA; d.mwdma_mask = d.swdma_mask = 0; } if (idx == 0) d.host_flags |= IDE_HFLAG_CLEAR_SIMPLEX; return ide_pci_init_one(dev, &d, NULL); } static const struct pci_device_id alim15x3_pci_tbl[] = { { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5229), 0 }, { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5228), 1 }, { 0, }, }; MODULE_DEVICE_TABLE(pci, alim15x3_pci_tbl); static struct pci_driver alim15x3_pci_driver = { .name = "ALI15x3_IDE", .id_table = alim15x3_pci_tbl, .probe = alim15x3_init_one, .remove = ide_pci_remove, .suspend = ide_pci_suspend, .resume = ide_pci_resume, }; static int __init ali15x3_ide_init(void) { return ide_pci_register_driver(&alim15x3_pci_driver); } static void __exit ali15x3_ide_exit(void) { pci_unregister_driver(&alim15x3_pci_driver); } module_init(ali15x3_ide_init); module_exit(ali15x3_ide_exit); MODULE_AUTHOR("Michael Aubry, Andrzej Krzysztofowicz, CJ, Andre Hedrick, Alan Cox"); MODULE_DESCRIPTION("PCI driver module for ALi 15x3 IDE"); MODULE_LICENSE("GPL");