diff options
Diffstat (limited to 'drivers/ata/pata_via.c')
-rw-r--r-- | drivers/ata/pata_via.c | 136 |
1 files changed, 96 insertions, 40 deletions
diff --git a/drivers/ata/pata_via.c b/drivers/ata/pata_via.c index 1b2ff133b163..cc09d47fb927 100644 --- a/drivers/ata/pata_via.c +++ b/drivers/ata/pata_via.c @@ -23,6 +23,7 @@ * VIA VT8233c - UDMA100 * VIA VT8235 - UDMA133 * VIA VT8237 - UDMA133 + * VIA VT8251 - UDMA133 * * Most registers remain compatible across chips. Others start reserved * and acquire sensible semantics if set to 1 (eg cable detect). A few @@ -60,7 +61,7 @@ #include <linux/libata.h> #define DRV_NAME "pata_via" -#define DRV_VERSION "0.1.13" +#define DRV_VERSION "0.2.0" /* * The following comes directly from Vojtech Pavlik's ide/pci/via82cxxx @@ -94,6 +95,7 @@ static const struct via_isa_bridge { u8 rev_max; u16 flags; } via_isa_bridges[] = { + { "vt8251", PCI_DEVICE_ID_VIA_8251, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, { "cx700", PCI_DEVICE_ID_VIA_CX700, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, { "vt6410", PCI_DEVICE_ID_VIA_6410, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST | VIA_NO_ENABLES}, { "vt8237a", PCI_DEVICE_ID_VIA_8237A, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, @@ -155,11 +157,8 @@ static int via_pre_reset(struct ata_port *ap) struct pci_dev *pdev = to_pci_dev(ap->host->dev); - if (!pci_test_config_bits(pdev, &via_enable_bits[ap->port_no])) { - ata_port_disable(ap); - printk(KERN_INFO "ata%u: port disabled. ignoring.\n", ap->id); - return 0; - } + if (!pci_test_config_bits(pdev, &via_enable_bits[ap->port_no])) + return -ENOENT; } if ((config->flags & VIA_UDMA) >= VIA_UDMA_66) @@ -291,14 +290,16 @@ static struct scsi_host_template via_sht = { .can_queue = ATA_DEF_QUEUE, .this_id = ATA_SHT_THIS_ID, .sg_tablesize = LIBATA_MAX_PRD, - .max_sectors = ATA_MAX_SECTORS, .cmd_per_lun = ATA_SHT_CMD_PER_LUN, .emulated = ATA_SHT_EMULATED, .use_clustering = ATA_SHT_USE_CLUSTERING, .proc_name = DRV_NAME, .dma_boundary = ATA_DMA_BOUNDARY, .slave_configure = ata_scsi_slave_config, + .slave_destroy = ata_scsi_slave_destroy, .bios_param = ata_std_bios_param, + .resume = ata_scsi_device_resume, + .suspend = ata_scsi_device_suspend, }; static struct ata_port_operations via_port_ops = { @@ -325,7 +326,7 @@ static struct ata_port_operations via_port_ops = { .qc_prep = ata_qc_prep, .qc_issue = ata_qc_issue_prot, - .eng_timeout = ata_eng_timeout, + .data_xfer = ata_pio_data_xfer, .irq_handler = ata_interrupt, @@ -360,7 +361,7 @@ static struct ata_port_operations via_port_ops_noirq = { .qc_prep = ata_qc_prep, .qc_issue = ata_qc_issue_prot, - .eng_timeout = ata_eng_timeout, + .data_xfer = ata_pio_data_xfer_noirq, .irq_handler = ata_interrupt, @@ -372,8 +373,42 @@ static struct ata_port_operations via_port_ops_noirq = { }; /** + * via_config_fifo - set up the FIFO + * @pdev: PCI device + * @flags: configuration flags + * + * Set the FIFO properties for this device if neccessary. Used both on + * set up and on and the resume path + */ + +static void via_config_fifo(struct pci_dev *pdev, unsigned int flags) +{ + u8 enable; + + /* 0x40 low bits indicate enabled channels */ + pci_read_config_byte(pdev, 0x40 , &enable); + enable &= 3; + + if (flags & VIA_SET_FIFO) { + u8 fifo_setting[4] = {0x00, 0x60, 0x00, 0x20}; + u8 fifo; + + pci_read_config_byte(pdev, 0x43, &fifo); + + /* Clear PREQ# until DDACK# for errata */ + if (flags & VIA_BAD_PREQ) + fifo &= 0x7F; + else + fifo &= 0x9f; + /* Turn on FIFO for enabled channels */ + fifo |= fifo_setting[enable]; + pci_write_config_byte(pdev, 0x43, fifo); + } +} + +/** * via_init_one - discovery callback - * @pdev: PCI device ID + * @pdev: PCI device * @id: PCI table info * * A VIA IDE interface has been discovered. Figure out what revision @@ -385,7 +420,7 @@ static int via_init_one(struct pci_dev *pdev, const struct pci_device_id *id) /* Early VIA without UDMA support */ static struct ata_port_info via_mwdma_info = { .sht = &via_sht, - .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST, + .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SETXFER_POLLING, .pio_mask = 0x1f, .mwdma_mask = 0x07, .port_ops = &via_port_ops @@ -393,7 +428,7 @@ static int via_init_one(struct pci_dev *pdev, const struct pci_device_id *id) /* Ditto with IRQ masking required */ static struct ata_port_info via_mwdma_info_borked = { .sht = &via_sht, - .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST, + .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SETXFER_POLLING, .pio_mask = 0x1f, .mwdma_mask = 0x07, .port_ops = &via_port_ops_noirq, @@ -401,7 +436,7 @@ static int via_init_one(struct pci_dev *pdev, const struct pci_device_id *id) /* VIA UDMA 33 devices (and borked 66) */ static struct ata_port_info via_udma33_info = { .sht = &via_sht, - .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST, + .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SETXFER_POLLING, .pio_mask = 0x1f, .mwdma_mask = 0x07, .udma_mask = 0x7, @@ -410,7 +445,7 @@ static int via_init_one(struct pci_dev *pdev, const struct pci_device_id *id) /* VIA UDMA 66 devices */ static struct ata_port_info via_udma66_info = { .sht = &via_sht, - .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST, + .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SETXFER_POLLING, .pio_mask = 0x1f, .mwdma_mask = 0x07, .udma_mask = 0x1f, @@ -419,7 +454,7 @@ static int via_init_one(struct pci_dev *pdev, const struct pci_device_id *id) /* VIA UDMA 100 devices */ static struct ata_port_info via_udma100_info = { .sht = &via_sht, - .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST, + .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SETXFER_POLLING, .pio_mask = 0x1f, .mwdma_mask = 0x07, .udma_mask = 0x3f, @@ -428,7 +463,7 @@ static int via_init_one(struct pci_dev *pdev, const struct pci_device_id *id) /* UDMA133 with bad AST (All current 133) */ static struct ata_port_info via_udma133_info = { .sht = &via_sht, - .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST, + .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SETXFER_POLLING, .pio_mask = 0x1f, .mwdma_mask = 0x07, .udma_mask = 0x7f, /* FIXME: should check north bridge */ @@ -473,21 +508,8 @@ static int via_init_one(struct pci_dev *pdev, const struct pci_device_id *id) } /* Initialise the FIFO for the enabled channels. */ - if (config->flags & VIA_SET_FIFO) { - u8 fifo_setting[4] = {0x00, 0x60, 0x00, 0x20}; - u8 fifo; - - pci_read_config_byte(pdev, 0x43, &fifo); - - /* Clear PREQ# until DDACK# for errata */ - if (config->flags & VIA_BAD_PREQ) - fifo &= 0x7F; - else - fifo &= 0x9f; - /* Turn on FIFO for enabled channels */ - fifo |= fifo_setting[enable]; - pci_write_config_byte(pdev, 0x43, fifo); - } + via_config_fifo(pdev, config->flags); + /* Clock set up */ switch(config->flags & VIA_UDMA) { case VIA_UDMA_NONE: @@ -531,19 +553,55 @@ static int via_init_one(struct pci_dev *pdev, const struct pci_device_id *id) return ata_pci_init_one(pdev, port_info, 2); } +/** + * via_reinit_one - reinit after resume + * @pdev; PCI device + * + * Called when the VIA PATA device is resumed. We must then + * reconfigure the fifo and other setup we may have altered. In + * addition the kernel needs to have the resume methods on PCI + * quirk supported. + */ + +static int via_reinit_one(struct pci_dev *pdev) +{ + u32 timing; + struct ata_host *host = dev_get_drvdata(&pdev->dev); + const struct via_isa_bridge *config = host->private_data; + + via_config_fifo(pdev, config->flags); + + if ((config->flags & VIA_UDMA) == VIA_UDMA_66) { + /* The 66 MHz devices require we enable the clock */ + pci_read_config_dword(pdev, 0x50, &timing); + timing |= 0x80008; + pci_write_config_dword(pdev, 0x50, timing); + } + if (config->flags & VIA_BAD_CLK66) { + /* Disable the 66MHz clock on problem devices */ + pci_read_config_dword(pdev, 0x50, &timing); + timing &= ~0x80008; + pci_write_config_dword(pdev, 0x50, timing); + } + return ata_pci_device_resume(pdev); +} + static const struct pci_device_id via[] = { - { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576_1), }, - { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_1), }, - { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_6410), }, - { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_SATA_EIDE), }, - { 0, }, + { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C576_1), }, + { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C586_1), }, + { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_6410), }, + { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_SATA_EIDE), }, + + { }, }; static struct pci_driver via_pci_driver = { - .name = DRV_NAME, + .name = DRV_NAME, .id_table = via, .probe = via_init_one, - .remove = ata_pci_remove_one + .remove = ata_pci_remove_one, + .suspend = ata_pci_device_suspend, + .resume = via_reinit_one, }; static int __init via_init(void) @@ -551,13 +609,11 @@ static int __init via_init(void) return pci_register_driver(&via_pci_driver); } - static void __exit via_exit(void) { pci_unregister_driver(&via_pci_driver); } - MODULE_AUTHOR("Alan Cox"); MODULE_DESCRIPTION("low-level driver for VIA PATA"); MODULE_LICENSE("GPL"); |