diff options
Diffstat (limited to 'drivers/ide/pci/piix.c')
| -rw-r--r-- | drivers/ide/pci/piix.c | 480 |
1 files changed, 0 insertions, 480 deletions
diff --git a/drivers/ide/pci/piix.c b/drivers/ide/pci/piix.c deleted file mode 100644 index d63f9fdca76..00000000000 --- a/drivers/ide/pci/piix.c +++ /dev/null @@ -1,480 +0,0 @@ -/* - * Copyright (C) 1998-1999 Andrzej Krzysztofowicz, Author and Maintainer - * Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org> - * Copyright (C) 2003 Red Hat Inc <alan@redhat.com> - * Copyright (C) 2006-2007 MontaVista Software, Inc. <source@mvista.com> - * - * May be copied or modified under the terms of the GNU General Public License - * - * Documentation: - * - * Publically available from Intel web site. Errata documentation - * is also publically available. As an aide to anyone hacking on this - * driver the list of errata that are relevant is below.going back to - * PIIX4. Older device documentation is now a bit tricky to find. - * - * Errata of note: - * - * Unfixable - * PIIX4 errata #9 - Only on ultra obscure hw - * ICH3 errata #13 - Not observed to affect real hw - * by Intel - * - * Things we must deal with - * PIIX4 errata #10 - BM IDE hang with non UDMA - * (must stop/start dma to recover) - * 440MX errata #15 - As PIIX4 errata #10 - * PIIX4 errata #15 - Must not read control registers - * during a PIO transfer - * 440MX errata #13 - As PIIX4 errata #15 - * ICH2 errata #21 - DMA mode 0 doesn't work right - * ICH0/1 errata #55 - As ICH2 errata #21 - * ICH2 spec c #9 - Extra operations needed to handle - * drive hotswap [NOT YET SUPPORTED] - * ICH2 spec c #20 - IDE PRD must not cross a 64K boundary - * and must be dword aligned - * ICH2 spec c #24 - UDMA mode 4,5 t85/86 should be 6ns not 3.3 - * - * Should have been BIOS fixed: - * 450NX: errata #19 - DMA hangs on old 450NX - * 450NX: errata #20 - DMA hangs on old 450NX - * 450NX: errata #25 - Corruption with DMA on old 450NX - * ICH3 errata #15 - IDE deadlock under high load - * (BIOS must set dev 31 fn 0 bit 23) - * ICH3 errata #18 - Don't use native mode - */ - -#include <linux/types.h> -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/pci.h> -#include <linux/ide.h> -#include <linux/init.h> - -#include <asm/io.h> - -#define DRV_NAME "piix" - -static int no_piix_dma; - -/** - * piix_set_pio_mode - set host controller for PIO mode - * @drive: drive - * @pio: PIO mode number - * - * Set the interface PIO mode based upon the settings done by AMI BIOS. - */ - -static void piix_set_pio_mode(ide_drive_t *drive, const u8 pio) -{ - ide_hwif_t *hwif = HWIF(drive); - struct pci_dev *dev = to_pci_dev(hwif->dev); - int is_slave = drive->dn & 1; - int master_port = hwif->channel ? 0x42 : 0x40; - int slave_port = 0x44; - unsigned long flags; - u16 master_data; - u8 slave_data; - static DEFINE_SPINLOCK(tune_lock); - int control = 0; - - /* ISP RTC */ - static const u8 timings[][2]= { - { 0, 0 }, - { 0, 0 }, - { 1, 0 }, - { 2, 1 }, - { 2, 3 }, }; - - /* - * Master vs slave is synchronized above us but the slave register is - * shared by the two hwifs so the corner case of two slave timeouts in - * parallel must be locked. - */ - spin_lock_irqsave(&tune_lock, flags); - pci_read_config_word(dev, master_port, &master_data); - - if (pio > 1) - control |= 1; /* Programmable timing on */ - if (drive->media == ide_disk) - control |= 4; /* Prefetch, post write */ - if (pio > 2) - control |= 2; /* IORDY */ - if (is_slave) { - master_data |= 0x4000; - master_data &= ~0x0070; - if (pio > 1) { - /* Set PPE, IE and TIME */ - master_data |= control << 4; - } - pci_read_config_byte(dev, slave_port, &slave_data); - slave_data &= hwif->channel ? 0x0f : 0xf0; - slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) << - (hwif->channel ? 4 : 0); - } else { - master_data &= ~0x3307; - if (pio > 1) { - /* enable PPE, IE and TIME */ - master_data |= control; - } - master_data |= (timings[pio][0] << 12) | (timings[pio][1] << 8); - } - pci_write_config_word(dev, master_port, master_data); - if (is_slave) - pci_write_config_byte(dev, slave_port, slave_data); - spin_unlock_irqrestore(&tune_lock, flags); -} - -/** - * piix_set_dma_mode - set host controller for DMA mode - * @drive: drive - * @speed: DMA mode - * - * Set a PIIX host controller to the desired DMA mode. This involves - * programming the right timing data into the PCI configuration space. - */ - -static void piix_set_dma_mode(ide_drive_t *drive, const u8 speed) -{ - ide_hwif_t *hwif = HWIF(drive); - struct pci_dev *dev = to_pci_dev(hwif->dev); - u8 maslave = hwif->channel ? 0x42 : 0x40; - int a_speed = 3 << (drive->dn * 4); - int u_flag = 1 << drive->dn; - int v_flag = 0x01 << drive->dn; - int w_flag = 0x10 << drive->dn; - int u_speed = 0; - int sitre; - u16 reg4042, reg4a; - u8 reg48, reg54, reg55; - - pci_read_config_word(dev, maslave, ®4042); - sitre = (reg4042 & 0x4000) ? 1 : 0; - pci_read_config_byte(dev, 0x48, ®48); - pci_read_config_word(dev, 0x4a, ®4a); - pci_read_config_byte(dev, 0x54, ®54); - pci_read_config_byte(dev, 0x55, ®55); - - if (speed >= XFER_UDMA_0) { - u8 udma = speed - XFER_UDMA_0; - - u_speed = min_t(u8, 2 - (udma & 1), udma) << (drive->dn * 4); - - if (!(reg48 & u_flag)) - pci_write_config_byte(dev, 0x48, reg48 | u_flag); - if (speed == XFER_UDMA_5) { - pci_write_config_byte(dev, 0x55, (u8) reg55|w_flag); - } else { - pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag); - } - if ((reg4a & a_speed) != u_speed) - pci_write_config_word(dev, 0x4a, (reg4a & ~a_speed) | u_speed); - if (speed > XFER_UDMA_2) { - if (!(reg54 & v_flag)) - pci_write_config_byte(dev, 0x54, reg54 | v_flag); - } else - pci_write_config_byte(dev, 0x54, reg54 & ~v_flag); - } else { - const u8 mwdma_to_pio[] = { 0, 3, 4 }; - u8 pio; - - if (reg48 & u_flag) - pci_write_config_byte(dev, 0x48, reg48 & ~u_flag); - if (reg4a & a_speed) - pci_write_config_word(dev, 0x4a, reg4a & ~a_speed); - if (reg54 & v_flag) - pci_write_config_byte(dev, 0x54, reg54 & ~v_flag); - if (reg55 & w_flag) - pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag); - - if (speed >= XFER_MW_DMA_0) - pio = mwdma_to_pio[speed - XFER_MW_DMA_0]; - else - pio = 2; /* only SWDMA2 is allowed */ - - piix_set_pio_mode(drive, pio); - } -} - -/** - * init_chipset_ich - set up the ICH chipset - * @dev: PCI device to set up - * - * Initialize the PCI device as required. For the ICH this turns - * out to be nice and simple. - */ - -static unsigned int init_chipset_ich(struct pci_dev *dev) -{ - u32 extra = 0; - - pci_read_config_dword(dev, 0x54, &extra); - pci_write_config_dword(dev, 0x54, extra | 0x400); - - return 0; -} - -/** - * ich_clear_irq - clear BMDMA status - * @drive: IDE drive - * - * ICHx contollers set DMA INTR no matter DMA or PIO. - * BMDMA status might need to be cleared even for - * PIO interrupts to prevent spurious/lost IRQ. - */ -static void ich_clear_irq(ide_drive_t *drive) -{ - ide_hwif_t *hwif = HWIF(drive); - u8 dma_stat; - - /* - * ide_dma_end() needs BMDMA status for error checking. - * So, skip clearing BMDMA status here and leave it - * to ide_dma_end() if this is DMA interrupt. - */ - if (drive->waiting_for_dma || hwif->dma_base == 0) - return; - - /* clear the INTR & ERROR bits */ - dma_stat = inb(hwif->dma_base + ATA_DMA_STATUS); - /* Should we force the bit as well ? */ - outb(dma_stat, hwif->dma_base + ATA_DMA_STATUS); -} - -struct ich_laptop { - u16 device; - u16 subvendor; - u16 subdevice; -}; - -/* - * List of laptops that use short cables rather than 80 wire - */ - -static const struct ich_laptop ich_laptop[] = { - /* devid, subvendor, subdev */ - { 0x27DF, 0x1025, 0x0102 }, /* ICH7 on Acer 5602aWLMi */ - { 0x27DF, 0x0005, 0x0280 }, /* ICH7 on Acer 5602WLMi */ - { 0x27DF, 0x1025, 0x0110 }, /* ICH7 on Acer 3682WLMi */ - { 0x27DF, 0x1043, 0x1267 }, /* ICH7 on Asus W5F */ - { 0x27DF, 0x103C, 0x30A1 }, /* ICH7 on HP Compaq nc2400 */ - { 0x27DF, 0x1071, 0xD221 }, /* ICH7 on Hercules EC-900 */ - { 0x24CA, 0x1025, 0x0061 }, /* ICH4 on Acer Aspire 2023WLMi */ - { 0x2653, 0x1043, 0x82D8 }, /* ICH6M on Asus Eee 701 */ - /* end marker */ - { 0, } -}; - -static u8 piix_cable_detect(ide_hwif_t *hwif) -{ - struct pci_dev *pdev = to_pci_dev(hwif->dev); - const struct ich_laptop *lap = &ich_laptop[0]; - u8 reg54h = 0, mask = hwif->channel ? 0xc0 : 0x30; - - /* check for specials */ - while (lap->device) { - if (lap->device == pdev->device && - lap->subvendor == pdev->subsystem_vendor && - lap->subdevice == pdev->subsystem_device) { - return ATA_CBL_PATA40_SHORT; - } - lap++; - } - - pci_read_config_byte(pdev, 0x54, ®54h); - - return (reg54h & mask) ? ATA_CBL_PATA80 : ATA_CBL_PATA40; -} - -/** - * init_hwif_piix - fill in the hwif for the PIIX - * @hwif: IDE interface - * - * Set up the ide_hwif_t for the PIIX interface according to the - * capabilities of the hardware. - */ - -static void __devinit init_hwif_piix(ide_hwif_t *hwif) -{ - if (!hwif->dma_base) - return; - - if (no_piix_dma) - hwif->ultra_mask = hwif->mwdma_mask = hwif->swdma_mask = 0; -} - -static const struct ide_port_ops piix_port_ops = { - .set_pio_mode = piix_set_pio_mode, - .set_dma_mode = piix_set_dma_mode, - .cable_detect = piix_cable_detect, -}; - -static const struct ide_port_ops ich_port_ops = { - .set_pio_mode = piix_set_pio_mode, - .set_dma_mode = piix_set_dma_mode, - .clear_irq = ich_clear_irq, - .cable_detect = piix_cable_detect, -}; - -#ifndef CONFIG_IA64 - #define IDE_HFLAGS_PIIX IDE_HFLAG_LEGACY_IRQS -#else - #define IDE_HFLAGS_PIIX 0 -#endif - -#define DECLARE_PIIX_DEV(udma) \ - { \ - .name = DRV_NAME, \ - .init_hwif = init_hwif_piix, \ - .enablebits = {{0x41,0x80,0x80}, {0x43,0x80,0x80}}, \ - .port_ops = &piix_port_ops, \ - .host_flags = IDE_HFLAGS_PIIX, \ - .pio_mask = ATA_PIO4, \ - .swdma_mask = ATA_SWDMA2_ONLY, \ - .mwdma_mask = ATA_MWDMA12_ONLY, \ - .udma_mask = udma, \ - } - -#define DECLARE_ICH_DEV(udma) \ - { \ - .name = DRV_NAME, \ - .init_chipset = init_chipset_ich, \ - .init_hwif = init_hwif_piix, \ - .enablebits = {{0x41,0x80,0x80}, {0x43,0x80,0x80}}, \ - .port_ops = &ich_port_ops, \ - .host_flags = IDE_HFLAGS_PIIX, \ - .pio_mask = ATA_PIO4, \ - .swdma_mask = ATA_SWDMA2_ONLY, \ - .mwdma_mask = ATA_MWDMA12_ONLY, \ - .udma_mask = udma, \ - } - -static const struct ide_port_info piix_pci_info[] __devinitdata = { - /* 0: MPIIX */ - { /* - * MPIIX actually has only a single IDE channel mapped to - * the primary or secondary ports depending on the value - * of the bit 14 of the IDETIM register at offset 0x6c - */ - .name = DRV_NAME, - .enablebits = {{0x6d,0xc0,0x80}, {0x6d,0xc0,0xc0}}, - .host_flags = IDE_HFLAG_ISA_PORTS | IDE_HFLAG_NO_DMA | - IDE_HFLAGS_PIIX, - .pio_mask = ATA_PIO4, - /* This is a painful system best to let it self tune for now */ - }, - /* 1: PIIXa/PIIXb/PIIX3 */ - DECLARE_PIIX_DEV(0x00), /* no udma */ - /* 2: PIIX4 */ - DECLARE_PIIX_DEV(ATA_UDMA2), - /* 3: ICH0 */ - DECLARE_ICH_DEV(ATA_UDMA2), - /* 4: ICH */ - DECLARE_ICH_DEV(ATA_UDMA4), - /* 5: PIIX4 */ - DECLARE_PIIX_DEV(ATA_UDMA4), - /* 6: ICH[2-7]/ICH[2-3]M/C-ICH/ICH5-SATA/ESB2/ICH8M */ - DECLARE_ICH_DEV(ATA_UDMA5), -}; - -/** - * piix_init_one - called when a PIIX is found - * @dev: the piix device - * @id: the matching pci id - * - * Called when the PCI registration layer (or the IDE initialization) - * finds a device matching our IDE device tables. - */ - -static int __devinit piix_init_one(struct pci_dev *dev, const struct pci_device_id *id) -{ - return ide_pci_init_one(dev, &piix_pci_info[id->driver_data], NULL); -} - -/** - * piix_check_450nx - Check for problem 450NX setup - * - * Check for the present of 450NX errata #19 and errata #25. If - * they are found, disable use of DMA IDE - */ - -static void __devinit piix_check_450nx(void) -{ - struct pci_dev *pdev = NULL; - u16 cfg; - while((pdev=pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, pdev))!=NULL) - { - /* Look for 450NX PXB. Check for problem configurations - A PCI quirk checks bit 6 already */ - pci_read_config_word(pdev, 0x41, &cfg); - /* Only on the original revision: IDE DMA can hang */ - if (pdev->revision == 0x00) - no_piix_dma = 1; - /* On all revisions below 5 PXB bus lock must be disabled for IDE */ - else if (cfg & (1<<14) && pdev->revision < 5) - no_piix_dma = 2; - } - if(no_piix_dma) - printk(KERN_WARNING DRV_NAME ": 450NX errata present, disabling IDE DMA.\n"); - if(no_piix_dma == 2) - printk(KERN_WARNING DRV_NAME ": A BIOS update may resolve this.\n"); -} - -static const struct pci_device_id piix_pci_tbl[] = { - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82371FB_0), 1 }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82371FB_1), 1 }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82371MX), 0 }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82371SB_1), 1 }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82371AB), 2 }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801AB_1), 3 }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82443MX_1), 2 }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801AA_1), 4 }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82372FB_1), 5 }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82451NX), 2 }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801BA_9), 6 }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801BA_8), 6 }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801CA_10), 6 }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801CA_11), 6 }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801DB_11), 6 }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801EB_11), 6 }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801E_11), 6 }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801DB_10), 6 }, -#ifdef CONFIG_BLK_DEV_IDE_SATA - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801EB_1), 6 }, -#endif - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_ESB_2), 6 }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_ICH6_19), 6 }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_ICH7_21), 6 }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801DB_1), 6 }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_ESB2_18), 6 }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_ICH8_6), 6 }, - { 0, }, -}; -MODULE_DEVICE_TABLE(pci, piix_pci_tbl); - -static struct pci_driver piix_pci_driver = { - .name = "PIIX_IDE", - .id_table = piix_pci_tbl, - .probe = piix_init_one, - .remove = ide_pci_remove, - .suspend = ide_pci_suspend, - .resume = ide_pci_resume, -}; - -static int __init piix_ide_init(void) -{ - piix_check_450nx(); - return ide_pci_register_driver(&piix_pci_driver); -} - -static void __exit piix_ide_exit(void) -{ - pci_unregister_driver(&piix_pci_driver); -} - -module_init(piix_ide_init); -module_exit(piix_ide_exit); - -MODULE_AUTHOR("Andre Hedrick, Andrzej Krzysztofowicz"); -MODULE_DESCRIPTION("PCI driver module for Intel PIIX IDE"); -MODULE_LICENSE("GPL"); |