diff options
Diffstat (limited to 'kernel/drivers/ide/aec62xx.c')
| -rw-r--r-- | kernel/drivers/ide/aec62xx.c | 330 |
1 files changed, 330 insertions, 0 deletions
diff --git a/kernel/drivers/ide/aec62xx.c b/kernel/drivers/ide/aec62xx.c new file mode 100644 index 000000000..c7eaf20af --- /dev/null +++ b/kernel/drivers/ide/aec62xx.c @@ -0,0 +1,330 @@ +/* + * Copyright (C) 1999-2002 Andre Hedrick <andre@linux-ide.org> + * Copyright (C) 2007 MontaVista Software, Inc. <source@mvista.com> + * + */ + +#include <linux/module.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/ide.h> +#include <linux/init.h> + +#include <asm/io.h> + +#define DRV_NAME "aec62xx" + +struct chipset_bus_clock_list_entry { + u8 xfer_speed; + u8 chipset_settings; + u8 ultra_settings; +}; + +static const struct chipset_bus_clock_list_entry aec6xxx_33_base [] = { + { XFER_UDMA_6, 0x31, 0x07 }, + { XFER_UDMA_5, 0x31, 0x06 }, + { XFER_UDMA_4, 0x31, 0x05 }, + { XFER_UDMA_3, 0x31, 0x04 }, + { XFER_UDMA_2, 0x31, 0x03 }, + { XFER_UDMA_1, 0x31, 0x02 }, + { XFER_UDMA_0, 0x31, 0x01 }, + + { XFER_MW_DMA_2, 0x31, 0x00 }, + { XFER_MW_DMA_1, 0x31, 0x00 }, + { XFER_MW_DMA_0, 0x0a, 0x00 }, + { XFER_PIO_4, 0x31, 0x00 }, + { XFER_PIO_3, 0x33, 0x00 }, + { XFER_PIO_2, 0x08, 0x00 }, + { XFER_PIO_1, 0x0a, 0x00 }, + { XFER_PIO_0, 0x00, 0x00 }, + { 0, 0x00, 0x00 } +}; + +static const struct chipset_bus_clock_list_entry aec6xxx_34_base [] = { + { XFER_UDMA_6, 0x41, 0x06 }, + { XFER_UDMA_5, 0x41, 0x05 }, + { XFER_UDMA_4, 0x41, 0x04 }, + { XFER_UDMA_3, 0x41, 0x03 }, + { XFER_UDMA_2, 0x41, 0x02 }, + { XFER_UDMA_1, 0x41, 0x01 }, + { XFER_UDMA_0, 0x41, 0x01 }, + + { XFER_MW_DMA_2, 0x41, 0x00 }, + { XFER_MW_DMA_1, 0x42, 0x00 }, + { XFER_MW_DMA_0, 0x7a, 0x00 }, + { XFER_PIO_4, 0x41, 0x00 }, + { XFER_PIO_3, 0x43, 0x00 }, + { XFER_PIO_2, 0x78, 0x00 }, + { XFER_PIO_1, 0x7a, 0x00 }, + { XFER_PIO_0, 0x70, 0x00 }, + { 0, 0x00, 0x00 } +}; + +/* + * TO DO: active tuning and correction of cards without a bios. + */ +static u8 pci_bus_clock_list (u8 speed, struct chipset_bus_clock_list_entry * chipset_table) +{ + for ( ; chipset_table->xfer_speed ; chipset_table++) + if (chipset_table->xfer_speed == speed) { + return chipset_table->chipset_settings; + } + return chipset_table->chipset_settings; +} + +static u8 pci_bus_clock_list_ultra (u8 speed, struct chipset_bus_clock_list_entry * chipset_table) +{ + for ( ; chipset_table->xfer_speed ; chipset_table++) + if (chipset_table->xfer_speed == speed) { + return chipset_table->ultra_settings; + } + return chipset_table->ultra_settings; +} + +static void aec6210_set_mode(ide_hwif_t *hwif, ide_drive_t *drive) +{ + struct pci_dev *dev = to_pci_dev(hwif->dev); + struct ide_host *host = pci_get_drvdata(dev); + struct chipset_bus_clock_list_entry *bus_clock = host->host_priv; + u16 d_conf = 0; + u8 ultra = 0, ultra_conf = 0; + u8 tmp0 = 0, tmp1 = 0, tmp2 = 0; + const u8 speed = drive->dma_mode; + unsigned long flags; + + local_irq_save(flags); + /* 0x40|(2*drive->dn): Active, 0x41|(2*drive->dn): Recovery */ + pci_read_config_word(dev, 0x40|(2*drive->dn), &d_conf); + tmp0 = pci_bus_clock_list(speed, bus_clock); + d_conf = ((tmp0 & 0xf0) << 4) | (tmp0 & 0xf); + pci_write_config_word(dev, 0x40|(2*drive->dn), d_conf); + + tmp1 = 0x00; + tmp2 = 0x00; + pci_read_config_byte(dev, 0x54, &ultra); + tmp1 = ((0x00 << (2*drive->dn)) | (ultra & ~(3 << (2*drive->dn)))); + ultra_conf = pci_bus_clock_list_ultra(speed, bus_clock); + tmp2 = ((ultra_conf << (2*drive->dn)) | (tmp1 & ~(3 << (2*drive->dn)))); + pci_write_config_byte(dev, 0x54, tmp2); + local_irq_restore(flags); +} + +static void aec6260_set_mode(ide_hwif_t *hwif, ide_drive_t *drive) +{ + struct pci_dev *dev = to_pci_dev(hwif->dev); + struct ide_host *host = pci_get_drvdata(dev); + struct chipset_bus_clock_list_entry *bus_clock = host->host_priv; + u8 unit = drive->dn & 1; + u8 tmp1 = 0, tmp2 = 0; + u8 ultra = 0, drive_conf = 0, ultra_conf = 0; + const u8 speed = drive->dma_mode; + unsigned long flags; + + local_irq_save(flags); + /* high 4-bits: Active, low 4-bits: Recovery */ + pci_read_config_byte(dev, 0x40|drive->dn, &drive_conf); + drive_conf = pci_bus_clock_list(speed, bus_clock); + pci_write_config_byte(dev, 0x40|drive->dn, drive_conf); + + pci_read_config_byte(dev, (0x44|hwif->channel), &ultra); + tmp1 = ((0x00 << (4*unit)) | (ultra & ~(7 << (4*unit)))); + ultra_conf = pci_bus_clock_list_ultra(speed, bus_clock); + tmp2 = ((ultra_conf << (4*unit)) | (tmp1 & ~(7 << (4*unit)))); + pci_write_config_byte(dev, (0x44|hwif->channel), tmp2); + local_irq_restore(flags); +} + +static void aec_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive) +{ + drive->dma_mode = drive->pio_mode; + hwif->port_ops->set_dma_mode(hwif, drive); +} + +static int init_chipset_aec62xx(struct pci_dev *dev) +{ + /* These are necessary to get AEC6280 Macintosh cards to work */ + if ((dev->device == PCI_DEVICE_ID_ARTOP_ATP865) || + (dev->device == PCI_DEVICE_ID_ARTOP_ATP865R)) { + u8 reg49h = 0, reg4ah = 0; + /* Clear reset and test bits. */ + pci_read_config_byte(dev, 0x49, ®49h); + pci_write_config_byte(dev, 0x49, reg49h & ~0x30); + /* Enable chip interrupt output. */ + pci_read_config_byte(dev, 0x4a, ®4ah); + pci_write_config_byte(dev, 0x4a, reg4ah & ~0x01); + /* Enable burst mode. */ + pci_read_config_byte(dev, 0x4a, ®4ah); + pci_write_config_byte(dev, 0x4a, reg4ah | 0x80); + } + + return 0; +} + +static u8 atp86x_cable_detect(ide_hwif_t *hwif) +{ + struct pci_dev *dev = to_pci_dev(hwif->dev); + u8 ata66 = 0, mask = hwif->channel ? 0x02 : 0x01; + + pci_read_config_byte(dev, 0x49, &ata66); + + return (ata66 & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80; +} + +static const struct ide_port_ops atp850_port_ops = { + .set_pio_mode = aec_set_pio_mode, + .set_dma_mode = aec6210_set_mode, +}; + +static const struct ide_port_ops atp86x_port_ops = { + .set_pio_mode = aec_set_pio_mode, + .set_dma_mode = aec6260_set_mode, + .cable_detect = atp86x_cable_detect, +}; + +static const struct ide_port_info aec62xx_chipsets[] = { + { /* 0: AEC6210 */ + .name = DRV_NAME, + .init_chipset = init_chipset_aec62xx, + .enablebits = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}}, + .port_ops = &atp850_port_ops, + .host_flags = IDE_HFLAG_SERIALIZE | + IDE_HFLAG_NO_ATAPI_DMA | + IDE_HFLAG_NO_DSC | + IDE_HFLAG_OFF_BOARD, + .pio_mask = ATA_PIO4, + .mwdma_mask = ATA_MWDMA2, + .udma_mask = ATA_UDMA2, + }, + { /* 1: AEC6260 */ + .name = DRV_NAME, + .init_chipset = init_chipset_aec62xx, + .port_ops = &atp86x_port_ops, + .host_flags = IDE_HFLAG_NO_ATAPI_DMA | IDE_HFLAG_NO_AUTODMA | + IDE_HFLAG_OFF_BOARD, + .pio_mask = ATA_PIO4, + .mwdma_mask = ATA_MWDMA2, + .udma_mask = ATA_UDMA4, + }, + { /* 2: AEC6260R */ + .name = DRV_NAME, + .init_chipset = init_chipset_aec62xx, + .enablebits = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}}, + .port_ops = &atp86x_port_ops, + .host_flags = IDE_HFLAG_NO_ATAPI_DMA | + IDE_HFLAG_NON_BOOTABLE, + .pio_mask = ATA_PIO4, + .mwdma_mask = ATA_MWDMA2, + .udma_mask = ATA_UDMA4, + }, + { /* 3: AEC6280 */ + .name = DRV_NAME, + .init_chipset = init_chipset_aec62xx, + .port_ops = &atp86x_port_ops, + .host_flags = IDE_HFLAG_NO_ATAPI_DMA | + IDE_HFLAG_OFF_BOARD, + .pio_mask = ATA_PIO4, + .mwdma_mask = ATA_MWDMA2, + .udma_mask = ATA_UDMA5, + }, + { /* 4: AEC6280R */ + .name = DRV_NAME, + .init_chipset = init_chipset_aec62xx, + .enablebits = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}}, + .port_ops = &atp86x_port_ops, + .host_flags = IDE_HFLAG_NO_ATAPI_DMA | + IDE_HFLAG_OFF_BOARD, + .pio_mask = ATA_PIO4, + .mwdma_mask = ATA_MWDMA2, + .udma_mask = ATA_UDMA5, + } +}; + +/** + * aec62xx_init_one - called when a AEC is found + * @dev: the aec62xx device + * @id: the matching pci id + * + * Called when the PCI registration layer (or the IDE initialization) + * finds a device matching our IDE device tables. + * + * NOTE: since we're going to modify the 'name' field for AEC-6[26]80[R] + * chips, pass a local copy of 'struct ide_port_info' down the call chain. + */ + +static int aec62xx_init_one(struct pci_dev *dev, const struct pci_device_id *id) +{ + const struct chipset_bus_clock_list_entry *bus_clock; + struct ide_port_info d; + u8 idx = id->driver_data; + int bus_speed = ide_pci_clk ? ide_pci_clk : 33; + int err; + + if (bus_speed <= 33) + bus_clock = aec6xxx_33_base; + else + bus_clock = aec6xxx_34_base; + + err = pci_enable_device(dev); + if (err) + return err; + + d = aec62xx_chipsets[idx]; + + if (idx == 3 || idx == 4) { + unsigned long dma_base = pci_resource_start(dev, 4); + + if (inb(dma_base + 2) & 0x10) { + printk(KERN_INFO DRV_NAME " %s: AEC6880%s card detected" + "\n", pci_name(dev), (idx == 4) ? "R" : ""); + d.udma_mask = ATA_UDMA6; + } + } + + err = ide_pci_init_one(dev, &d, (void *)bus_clock); + if (err) + pci_disable_device(dev); + + return err; +} + +static void aec62xx_remove(struct pci_dev *dev) +{ + ide_pci_remove(dev); + pci_disable_device(dev); +} + +static const struct pci_device_id aec62xx_pci_tbl[] = { + { PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP850UF), 0 }, + { PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP860), 1 }, + { PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP860R), 2 }, + { PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP865), 3 }, + { PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP865R), 4 }, + { 0, }, +}; +MODULE_DEVICE_TABLE(pci, aec62xx_pci_tbl); + +static struct pci_driver aec62xx_pci_driver = { + .name = "AEC62xx_IDE", + .id_table = aec62xx_pci_tbl, + .probe = aec62xx_init_one, + .remove = aec62xx_remove, + .suspend = ide_pci_suspend, + .resume = ide_pci_resume, +}; + +static int __init aec62xx_ide_init(void) +{ + return ide_pci_register_driver(&aec62xx_pci_driver); +} + +static void __exit aec62xx_ide_exit(void) +{ + pci_unregister_driver(&aec62xx_pci_driver); +} + +module_init(aec62xx_ide_init); +module_exit(aec62xx_ide_exit); + +MODULE_AUTHOR("Andre Hedrick"); +MODULE_DESCRIPTION("PCI driver module for ARTOP AEC62xx IDE"); +MODULE_LICENSE("GPL"); |