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drivers/ata/pata_ali.c
17.5 KB
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/* * pata_ali.c - ALI 15x3 PATA for new ATA layer * (C) 2005 Red Hat Inc |
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* * based in part upon * 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 <alan@redhat.com> * ALi (now ULi M5228) support by Clear Zhang <Clear.Zhang@ali.com.tw> * * Documentation * Chipset documentation available under NDA only * * TODO/CHECK * Cannot have ATAPI on both master & slave for rev < c2 (???) but |
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* otherwise should do atapi DMA (For now for old we do PIO only for * ATAPI) * Review Sunblade workaround. |
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*/ #include <linux/kernel.h> #include <linux/module.h> #include <linux/pci.h> #include <linux/init.h> #include <linux/blkdev.h> #include <linux/delay.h> #include <scsi/scsi_host.h> #include <linux/libata.h> #include <linux/dmi.h> #define DRV_NAME "pata_ali" |
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#define DRV_VERSION "0.7.8" |
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static int ali_atapi_dma = 0; |
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module_param_named(atapi_dma, ali_atapi_dma, int, 0644); MODULE_PARM_DESC(atapi_dma, "Enable ATAPI DMA (0=disable, 1=enable)"); |
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static struct pci_dev *ali_isa_bridge; |
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/* * Cable special cases */ |
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static const struct dmi_system_id cable_dmi_table[] = { |
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{ .ident = "HP Pavilion N5430", .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), |
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DMI_MATCH(DMI_BOARD_VERSION, "OmniBook N32N-736"), |
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}, }, |
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{ |
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.ident = "Toshiba Satellite S1800-814", |
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.matches = { DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), DMI_MATCH(DMI_PRODUCT_NAME, "S1800-814"), }, }, |
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{ } }; static int ali_cable_override(struct pci_dev *pdev) { /* Fujitsu P2000 */ if (pdev->subsystem_vendor == 0x10CF && pdev->subsystem_device == 0x10AF) return 1; |
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/* Mitac 8317 (Winbook-A) and relatives */ |
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if (pdev->subsystem_vendor == 0x1071 && pdev->subsystem_device == 0x8317) |
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return 1; |
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/* Systems by DMI */ if (dmi_check_system(cable_dmi_table)) return 1; return 0; } /** * ali_c2_cable_detect - cable detection * @ap: ATA port * * Perform cable detection for C2 and later revisions */ static int ali_c2_cable_detect(struct ata_port *ap) { struct pci_dev *pdev = to_pci_dev(ap->host->dev); u8 ata66; /* Certain laptops use short but suitable cables and don't implement the detect logic */ if (ali_cable_override(pdev)) |
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return ATA_CBL_PATA40_SHORT; |
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/* Host view cable detect 0x4A bit 0 primary bit 1 secondary Bit set for 40 pin */ pci_read_config_byte(pdev, 0x4A, &ata66); if (ata66 & (1 << ap->port_no)) return ATA_CBL_PATA40; else return ATA_CBL_PATA80; } /** |
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* ali_20_filter - filter for earlier ALI DMA * @ap: ALi ATA port * @adev: attached device * * Ensure that we do not do DMA on CD devices. We may be able to * fix that later on. Also ensure we do not do UDMA on WDC drives */ |
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static unsigned long ali_20_filter(struct ata_device *adev, unsigned long mask) |
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{ |
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char model_num[ATA_ID_PROD_LEN + 1]; |
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/* No DMA on anything but a disk for now */ if (adev->class != ATA_DEV_ATA) mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA); |
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ata_id_c_string(adev->id, model_num, ATA_ID_PROD, sizeof(model_num)); |
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if (strstr(model_num, "WDC")) return mask &= ~ATA_MASK_UDMA; |
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return mask; |
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} /** * ali_fifo_control - FIFO manager * @ap: ALi channel to control * @adev: device for FIFO control * @on: 0 for off 1 for on * * Enable or disable the FIFO on a given device. Because of the way the * ALi FIFO works it provides a boost on ATA disk but can be confused by * ATAPI and we must therefore manage it. */ static void ali_fifo_control(struct ata_port *ap, struct ata_device *adev, int on) { struct pci_dev *pdev = to_pci_dev(ap->host->dev); int pio_fifo = 0x54 + ap->port_no; u8 fifo; int shift = 4 * adev->devno; /* ATA - FIFO on set nibble to 0x05, ATAPI - FIFO off, set nibble to 0x00. Not all the docs agree but the behaviour we now use is the one stated in the BIOS Programming Guide */ |
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pci_read_config_byte(pdev, pio_fifo, &fifo); fifo &= ~(0x0F << shift); |
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fifo |= (on << shift); |
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pci_write_config_byte(pdev, pio_fifo, fifo); } /** * ali_program_modes - load mode registers * @ap: ALi channel to load * @adev: Device the timing is for |
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* @t: timing data |
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* @ultra: UDMA timing or zero for off * * Loads the timing registers for cmd/data and disable UDMA if * ultra is zero. If ultra is set then load and enable the UDMA * timing but do not touch the command/data timing. */ static void ali_program_modes(struct ata_port *ap, struct ata_device *adev, struct ata_timing *t, u8 ultra) { struct pci_dev *pdev = to_pci_dev(ap->host->dev); int cas = 0x58 + 4 * ap->port_no; /* Command timing */ int cbt = 0x59 + 4 * ap->port_no; /* Command timing */ int drwt = 0x5A + 4 * ap->port_no + adev->devno; /* R/W timing */ int udmat = 0x56 + ap->port_no; /* UDMA timing */ int shift = 4 * adev->devno; u8 udma; if (t != NULL) { |
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t->setup = clamp_val(t->setup, 1, 8) & 7; t->act8b = clamp_val(t->act8b, 1, 8) & 7; t->rec8b = clamp_val(t->rec8b, 1, 16) & 15; t->active = clamp_val(t->active, 1, 8) & 7; t->recover = clamp_val(t->recover, 1, 16) & 15; |
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pci_write_config_byte(pdev, cas, t->setup); pci_write_config_byte(pdev, cbt, (t->act8b << 4) | t->rec8b); pci_write_config_byte(pdev, drwt, (t->active << 4) | t->recover); } /* Set up the UDMA enable */ pci_read_config_byte(pdev, udmat, &udma); udma &= ~(0x0F << shift); udma |= ultra << shift; pci_write_config_byte(pdev, udmat, udma); } /** * ali_set_piomode - set initial PIO mode data * @ap: ATA interface * @adev: ATA device * |
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* Program the ALi registers for PIO mode. |
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*/ static void ali_set_piomode(struct ata_port *ap, struct ata_device *adev) { struct ata_device *pair = ata_dev_pair(adev); struct ata_timing t; unsigned long T = 1000000000 / 33333; /* PCI clock based */ ata_timing_compute(adev, adev->pio_mode, &t, T, 1); if (pair) { struct ata_timing p; ata_timing_compute(pair, pair->pio_mode, &p, T, 1); ata_timing_merge(&p, &t, &t, ATA_TIMING_SETUP|ATA_TIMING_8BIT); if (pair->dma_mode) { ata_timing_compute(pair, pair->dma_mode, &p, T, 1); ata_timing_merge(&p, &t, &t, ATA_TIMING_SETUP|ATA_TIMING_8BIT); } } /* PIO FIFO is only permitted on ATA disk */ if (adev->class != ATA_DEV_ATA) ali_fifo_control(ap, adev, 0x00); ali_program_modes(ap, adev, &t, 0); if (adev->class == ATA_DEV_ATA) ali_fifo_control(ap, adev, 0x05); } /** * ali_set_dmamode - set initial DMA mode data * @ap: ATA interface * @adev: ATA device * |
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* Program the ALi registers for DMA mode. |
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*/ static void ali_set_dmamode(struct ata_port *ap, struct ata_device *adev) { static u8 udma_timing[7] = { 0xC, 0xB, 0xA, 0x9, 0x8, 0xF, 0xD }; struct ata_device *pair = ata_dev_pair(adev); struct ata_timing t; unsigned long T = 1000000000 / 33333; /* PCI clock based */ struct pci_dev *pdev = to_pci_dev(ap->host->dev); if (adev->class == ATA_DEV_ATA) ali_fifo_control(ap, adev, 0x08); if (adev->dma_mode >= XFER_UDMA_0) { ali_program_modes(ap, adev, NULL, udma_timing[adev->dma_mode - XFER_UDMA_0]); if (adev->dma_mode >= XFER_UDMA_3) { u8 reg4b; pci_read_config_byte(pdev, 0x4B, ®4b); reg4b |= 1; pci_write_config_byte(pdev, 0x4B, reg4b); } } else { ata_timing_compute(adev, adev->dma_mode, &t, T, 1); if (pair) { struct ata_timing p; ata_timing_compute(pair, pair->pio_mode, &p, T, 1); ata_timing_merge(&p, &t, &t, ATA_TIMING_SETUP|ATA_TIMING_8BIT); if (pair->dma_mode) { ata_timing_compute(pair, pair->dma_mode, &p, T, 1); ata_timing_merge(&p, &t, &t, ATA_TIMING_SETUP|ATA_TIMING_8BIT); } } ali_program_modes(ap, adev, &t, 0); } } /** |
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* ali_warn_atapi_dma - Warn about ATAPI DMA disablement * @adev: Device * * Whine about ATAPI DMA disablement if @adev is an ATAPI device. * Can be used as ->dev_config. */ static void ali_warn_atapi_dma(struct ata_device *adev) { struct ata_eh_context *ehc = &adev->link->eh_context; int print_info = ehc->i.flags & ATA_EHI_PRINTINFO; if (print_info && adev->class == ATA_DEV_ATAPI && !ali_atapi_dma) { |
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ata_dev_warn(adev, "WARNING: ATAPI DMA disabled for reliability issues. It can be enabled "); ata_dev_warn(adev, "WARNING: via pata_ali.atapi_dma modparam or corresponding sysfs node. "); |
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} } /** |
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* ali_lock_sectors - Keep older devices to 255 sector mode |
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* @adev: Device * * Called during the bus probe for each device that is found. We use * this call to lock the sector count of the device to 255 or less on * older ALi controllers. If we didn't do this then large I/O's would * require LBA48 commands which the older ALi requires are issued by * slower PIO methods */ |
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static void ali_lock_sectors(struct ata_device *adev) |
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{ adev->max_sectors = 255; |
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ali_warn_atapi_dma(adev); |
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} |
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/** * ali_check_atapi_dma - DMA check for most ALi controllers * @adev: Device * * Called to decide whether commands should be sent by DMA or PIO */ |
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static int ali_check_atapi_dma(struct ata_queued_cmd *qc) { |
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if (!ali_atapi_dma) { /* FIXME: pata_ali can't do ATAPI DMA reliably but the * IDE alim15x3 driver can. I tried lots of things * but couldn't find what the actual difference was. * If you got an idea, please write it to * linux-ide@vger.kernel.org and cc htejun@gmail.com. * * Disable ATAPI DMA for now. */ return -EOPNOTSUPP; } |
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/* If its not a media command, its not worth it */ |
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if (atapi_cmd_type(qc->cdb[0]) == ATAPI_MISC) |
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return -EOPNOTSUPP; return 0; } |
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static void ali_c2_c3_postreset(struct ata_link *link, unsigned int *classes) { u8 r; int port_bit = 4 << link->ap->port_no; /* If our bridge is an ALI 1533 then do the extra work */ |
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if (ali_isa_bridge) { |
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/* Tristate and re-enable the bus signals */ |
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pci_read_config_byte(ali_isa_bridge, 0x58, &r); |
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r &= ~port_bit; |
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pci_write_config_byte(ali_isa_bridge, 0x58, r); |
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r |= port_bit; |
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pci_write_config_byte(ali_isa_bridge, 0x58, r); |
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} ata_sff_postreset(link, classes); } |
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static struct scsi_host_template ali_sht = { |
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ATA_BMDMA_SHT(DRV_NAME), |
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}; /* * Port operations for PIO only ALi */ static struct ata_port_operations ali_early_port_ops = { |
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.inherits = &ata_sff_port_ops, |
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.cable_detect = ata_cable_40wire, |
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.set_piomode = ali_set_piomode, |
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.sff_data_xfer = ata_sff_data_xfer32, |
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}; |
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static const struct ata_port_operations ali_dma_base_ops = { |
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.inherits = &ata_bmdma32_port_ops, |
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.set_piomode = ali_set_piomode, .set_dmamode = ali_set_dmamode, |
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}; /* * Port operations for DMA capable ALi without cable * detect */ static struct ata_port_operations ali_20_port_ops = { |
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.inherits = &ali_dma_base_ops, .cable_detect = ata_cable_40wire, |
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.mode_filter = ali_20_filter, |
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.check_atapi_dma = ali_check_atapi_dma, |
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.dev_config = ali_lock_sectors, |
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}; /* * Port operations for DMA capable ALi with cable detect */ static struct ata_port_operations ali_c2_port_ops = { |
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.inherits = &ali_dma_base_ops, |
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.check_atapi_dma = ali_check_atapi_dma, |
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.cable_detect = ali_c2_cable_detect, |
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.dev_config = ali_lock_sectors, |
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.postreset = ali_c2_c3_postreset, }; /* * Port operations for DMA capable ALi with cable detect */ static struct ata_port_operations ali_c4_port_ops = { .inherits = &ali_dma_base_ops, .check_atapi_dma = ali_check_atapi_dma, .cable_detect = ali_c2_cable_detect, .dev_config = ali_lock_sectors, |
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}; /* * Port operations for DMA capable ALi with cable detect and LBA48 */ static struct ata_port_operations ali_c5_port_ops = { |
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.inherits = &ali_dma_base_ops, |
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.check_atapi_dma = ali_check_atapi_dma, |
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.dev_config = ali_warn_atapi_dma, |
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.cable_detect = ali_c2_cable_detect, |
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}; |
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/** * ali_init_chipset - chip setup function * @pdev: PCI device of ATA controller * * Perform the setup on the device that must be done both at boot * and at resume time. */ |
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static void ali_init_chipset(struct pci_dev *pdev) { |
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u8 tmp; |
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struct pci_dev *north; |
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/* * The chipset revision selects the driver operations and * mode data. */ |
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if (pdev->revision <= 0x20) { pci_read_config_byte(pdev, 0x53, &tmp); tmp |= 0x03; pci_write_config_byte(pdev, 0x53, tmp); } else { pci_read_config_byte(pdev, 0x4a, &tmp); pci_write_config_byte(pdev, 0x4a, tmp | 0x20); |
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pci_read_config_byte(pdev, 0x4B, &tmp); |
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if (pdev->revision < 0xC2) /* 1543-E/F, 1543C-C, 1543C-D, 1543C-E */ /* Clear CD-ROM DMA write bit */ tmp &= 0x7F; /* Cable and UDMA */ |
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if (pdev->revision >= 0xc2) tmp |= 0x01; pci_write_config_byte(pdev, 0x4B, tmp | 0x08); |
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/* * CD_ROM DMA on (0x53 bit 0). Enable this even if we want * to use PIO. 0x53 bit 1 (rev 20 only) - enable FIFO control * via 0x54/55. */ pci_read_config_byte(pdev, 0x53, &tmp); |
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if (pdev->revision >= 0xc7) |
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tmp |= 0x03; else tmp |= 0x01; /* CD_ROM enable for DMA */ pci_write_config_byte(pdev, 0x53, tmp); } |
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north = pci_get_bus_and_slot(0, PCI_DEVFN(0,0)); |
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if (north && north->vendor == PCI_VENDOR_ID_AL && ali_isa_bridge) { |
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/* Configure the ALi bridge logic. For non ALi rely on BIOS. Set the south bridge enable bit */ |
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pci_read_config_byte(ali_isa_bridge, 0x79, &tmp); |
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if (pdev->revision == 0xC2) |
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pci_write_config_byte(ali_isa_bridge, 0x79, tmp | 0x04); |
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else if (pdev->revision > 0xC2 && pdev->revision < 0xC5) |
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pci_write_config_byte(ali_isa_bridge, 0x79, tmp | 0x02); |
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} |
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pci_dev_put(north); |
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ata_pci_bmdma_clear_simplex(pdev); |
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} |
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/** * ali_init_one - discovery callback * @pdev: PCI device ID * @id: PCI table info * * An ALi IDE interface has been discovered. Figure out what revision * and perform configuration work before handing it to the ATA layer */ static int ali_init_one(struct pci_dev *pdev, const struct pci_device_id *id) { |
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static const struct ata_port_info info_early = { |
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.flags = ATA_FLAG_SLAVE_POSS, |
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.pio_mask = ATA_PIO4, |
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.port_ops = &ali_early_port_ops }; /* Revision 0x20 added DMA */ |
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static const struct ata_port_info info_20 = { |
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.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48 | ATA_FLAG_IGN_SIMPLEX, |
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.pio_mask = ATA_PIO4, .mwdma_mask = ATA_MWDMA2, |
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.port_ops = &ali_20_port_ops }; /* Revision 0x20 with support logic added UDMA */ |
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static const struct ata_port_info info_20_udma = { |
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.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48 | ATA_FLAG_IGN_SIMPLEX, |
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.pio_mask = ATA_PIO4, .mwdma_mask = ATA_MWDMA2, .udma_mask = ATA_UDMA2, |
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.port_ops = &ali_20_port_ops }; /* Revision 0xC2 adds UDMA66 */ |
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static const struct ata_port_info info_c2 = { |
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.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48 | ATA_FLAG_IGN_SIMPLEX, |
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.pio_mask = ATA_PIO4, .mwdma_mask = ATA_MWDMA2, |
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.udma_mask = ATA_UDMA4, |
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.port_ops = &ali_c2_port_ops }; |
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/* Revision 0xC3 is UDMA66 for now */ |
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static const struct ata_port_info info_c3 = { |
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.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48 | ATA_FLAG_IGN_SIMPLEX, |
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.pio_mask = ATA_PIO4, .mwdma_mask = ATA_MWDMA2, |
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522 |
.udma_mask = ATA_UDMA4, |
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523 524 |
.port_ops = &ali_c2_port_ops }; |
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/* Revision 0xC4 is UDMA100 */ |
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static const struct ata_port_info info_c4 = { |
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.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48 | ATA_FLAG_IGN_SIMPLEX, |
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.pio_mask = ATA_PIO4, .mwdma_mask = ATA_MWDMA2, |
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531 |
.udma_mask = ATA_UDMA5, |
fc80902fd pata_ali: Fix and... |
532 |
.port_ops = &ali_c4_port_ops |
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}; /* Revision 0xC5 is UDMA133 with LBA48 DMA */ |
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static const struct ata_port_info info_c5 = { |
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.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_IGN_SIMPLEX, |
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537 538 |
.pio_mask = ATA_PIO4, .mwdma_mask = ATA_MWDMA2, |
bf6263a85 [libata] Use ATA_... |
539 |
.udma_mask = ATA_UDMA6, |
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540 541 |
.port_ops = &ali_c5_port_ops }; |
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const struct ata_port_info *ppi[] = { NULL, NULL }; |
44c10138f PCI: Change all d... |
543 |
u8 tmp; |
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int rc; rc = pcim_enable_device(pdev); if (rc) return rc; |
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|
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/* * The chipset revision selects the driver operations and * mode data. */ |
44c10138f PCI: Change all d... |
554 |
if (pdev->revision < 0x20) { |
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555 |
ppi[0] = &info_early; |
44c10138f PCI: Change all d... |
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} else if (pdev->revision < 0xC2) { |
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ppi[0] = &info_20; |
44c10138f PCI: Change all d... |
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} else if (pdev->revision == 0xC2) { |
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ppi[0] = &info_c2; |
44c10138f PCI: Change all d... |
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} else if (pdev->revision == 0xC3) { |
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ppi[0] = &info_c3; |
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562 |
} else if (pdev->revision == 0xC4) { |
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563 |
ppi[0] = &info_c4; |
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} else |
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ppi[0] = &info_c5; |
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|
34d8dfb1e [PATCH] pata_ali:... |
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ali_init_chipset(pdev); |
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|
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if (ali_isa_bridge && pdev->revision >= 0x20 && pdev->revision < 0xC2) { |
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570 |
/* Are we paired with a UDMA capable chip */ |
bc42b24e6 drivers/ata/pata_... |
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pci_read_config_byte(ali_isa_bridge, 0x5E, &tmp); |
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572 |
if ((tmp & 0x1E) == 0x12) |
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ppi[0] = &info_20_udma; |
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} |
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|
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if (!ppi[0]->mwdma_mask && !ppi[0]->udma_mask) return ata_pci_sff_init_one(pdev, ppi, &ali_sht, NULL, 0); else return ata_pci_bmdma_init_one(pdev, ppi, &ali_sht, NULL, 0); |
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} |
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#ifdef CONFIG_PM |
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static int ali_reinit_one(struct pci_dev *pdev) { |
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struct ata_host *host = dev_get_drvdata(&pdev->dev); int rc; rc = ata_pci_device_do_resume(pdev); if (rc) return rc; |
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ali_init_chipset(pdev); |
f08048e94 libata: PCI devic... |
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ata_host_resume(host); return 0; |
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} |
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#endif |
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|
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static const struct pci_device_id ali[] = { { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5228), }, { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5229), }, { }, |
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}; static struct pci_driver ali_pci_driver = { .name = DRV_NAME, .id_table = ali, .probe = ali_init_one, |
34d8dfb1e [PATCH] pata_ali:... |
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.remove = ata_pci_remove_one, |
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#ifdef CONFIG_PM |
34d8dfb1e [PATCH] pata_ali:... |
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.suspend = ata_pci_device_suspend, .resume = ali_reinit_one, |
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#endif |
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}; static int __init ali_init(void) { |
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616 |
int ret; |
bc42b24e6 drivers/ata/pata_... |
617 |
ali_isa_bridge = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL); |
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ret = pci_register_driver(&ali_pci_driver); if (ret < 0) |
bc42b24e6 drivers/ata/pata_... |
621 |
pci_dev_put(ali_isa_bridge); |
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622 |
return ret; |
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} static void __exit ali_exit(void) { pci_unregister_driver(&ali_pci_driver); |
bc42b24e6 drivers/ata/pata_... |
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pci_dev_put(ali_isa_bridge); |
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} MODULE_AUTHOR("Alan Cox"); MODULE_DESCRIPTION("low-level driver for ALi PATA"); MODULE_LICENSE("GPL"); MODULE_DEVICE_TABLE(pci, ali); MODULE_VERSION(DRV_VERSION); module_init(ali_init); module_exit(ali_exit); |