diff options
Diffstat (limited to 'drivers/ide/pci/hpt34x.c')
| -rw-r--r-- | drivers/ide/pci/hpt34x.c | 278 |
1 files changed, 278 insertions, 0 deletions
diff --git a/drivers/ide/pci/hpt34x.c b/drivers/ide/pci/hpt34x.c new file mode 100644 index 000000000000..bbde46279984 --- /dev/null +++ b/drivers/ide/pci/hpt34x.c @@ -0,0 +1,278 @@ +/* + * linux/drivers/ide/pci/hpt34x.c Version 0.40 Sept 10, 2002 + * + * Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org> + * May be copied or modified under the terms of the GNU General Public License + * + * + * 00:12.0 Unknown mass storage controller: + * Triones Technologies, Inc. + * Unknown device 0003 (rev 01) + * + * hde: UDMA 2 (0x0000 0x0002) (0x0000 0x0010) + * hdf: UDMA 2 (0x0002 0x0012) (0x0010 0x0030) + * hde: DMA 2 (0x0000 0x0002) (0x0000 0x0010) + * hdf: DMA 2 (0x0002 0x0012) (0x0010 0x0030) + * hdg: DMA 1 (0x0012 0x0052) (0x0030 0x0070) + * hdh: DMA 1 (0x0052 0x0252) (0x0070 0x00f0) + * + * ide-pci.c reference + * + * Since there are two cards that report almost identically, + * the only discernable difference is the values reported in pcicmd. + * Booting-BIOS card or HPT363 :: pcicmd == 0x07 + * Non-bootable card or HPT343 :: pcicmd == 0x05 + */ + +#include <linux/config.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/timer.h> +#include <linux/mm.h> +#include <linux/ioport.h> +#include <linux/blkdev.h> +#include <linux/hdreg.h> +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/init.h> +#include <linux/ide.h> + +#include <asm/io.h> +#include <asm/irq.h> + +#define HPT343_DEBUG_DRIVE_INFO 0 + +static u8 hpt34x_ratemask (ide_drive_t *drive) +{ + return 1; +} + +static void hpt34x_clear_chipset (ide_drive_t *drive) +{ + struct pci_dev *dev = HWIF(drive)->pci_dev; + u32 reg1 = 0, tmp1 = 0, reg2 = 0, tmp2 = 0; + + pci_read_config_dword(dev, 0x44, ®1); + pci_read_config_dword(dev, 0x48, ®2); + tmp1 = ((0x00 << (3*drive->dn)) | (reg1 & ~(7 << (3*drive->dn)))); + tmp2 = (reg2 & ~(0x11 << drive->dn)); + pci_write_config_dword(dev, 0x44, tmp1); + pci_write_config_dword(dev, 0x48, tmp2); +} + +static int hpt34x_tune_chipset (ide_drive_t *drive, u8 xferspeed) +{ + struct pci_dev *dev = HWIF(drive)->pci_dev; + u8 speed = ide_rate_filter(hpt34x_ratemask(drive), xferspeed); + u32 reg1= 0, tmp1 = 0, reg2 = 0, tmp2 = 0; + u8 hi_speed, lo_speed; + + hi_speed = speed >> 4; + lo_speed = speed & 0x0f; + + if (hi_speed & 7) { + hi_speed = (hi_speed & 4) ? 0x01 : 0x10; + } else { + lo_speed <<= 5; + lo_speed >>= 5; + } + + pci_read_config_dword(dev, 0x44, ®1); + pci_read_config_dword(dev, 0x48, ®2); + tmp1 = ((lo_speed << (3*drive->dn)) | (reg1 & ~(7 << (3*drive->dn)))); + tmp2 = ((hi_speed << drive->dn) | reg2); + pci_write_config_dword(dev, 0x44, tmp1); + pci_write_config_dword(dev, 0x48, tmp2); + +#if HPT343_DEBUG_DRIVE_INFO + printk("%s: %s drive%d (0x%04x 0x%04x) (0x%04x 0x%04x)" \ + " (0x%02x 0x%02x)\n", + drive->name, ide_xfer_verbose(speed), + drive->dn, reg1, tmp1, reg2, tmp2, + hi_speed, lo_speed); +#endif /* HPT343_DEBUG_DRIVE_INFO */ + + return(ide_config_drive_speed(drive, speed)); +} + +static void hpt34x_tune_drive (ide_drive_t *drive, u8 pio) +{ + pio = ide_get_best_pio_mode(drive, pio, 5, NULL); + hpt34x_clear_chipset(drive); + (void) hpt34x_tune_chipset(drive, (XFER_PIO_0 + pio)); +} + +/* + * This allows the configuration of ide_pci chipset registers + * for cards that learn about the drive's UDMA, DMA, PIO capabilities + * after the drive is reported by the OS. Initially for designed for + * HPT343 UDMA chipset by HighPoint|Triones Technologies, Inc. + */ + +static int config_chipset_for_dma (ide_drive_t *drive) +{ + u8 speed = ide_dma_speed(drive, hpt34x_ratemask(drive)); + + if (!(speed)) + return 0; + + hpt34x_clear_chipset(drive); + (void) hpt34x_tune_chipset(drive, speed); + return ide_dma_enable(drive); +} + +static int hpt34x_config_drive_xfer_rate (ide_drive_t *drive) +{ + ide_hwif_t *hwif = HWIF(drive); + struct hd_driveid *id = drive->id; + + drive->init_speed = 0; + + if (id && (id->capability & 1) && drive->autodma) { + + if (ide_use_dma(drive)) { + if (config_chipset_for_dma(drive)) +#ifndef CONFIG_HPT34X_AUTODMA + return hwif->ide_dma_off_quietly(drive); +#else + return hwif->ide_dma_on(drive); +#endif + } + + goto fast_ata_pio; + + } else if ((id->capability & 8) || (id->field_valid & 2)) { +fast_ata_pio: + hpt34x_tune_drive(drive, 255); + return hwif->ide_dma_off_quietly(drive); + } + /* IORDY not supported */ + return 0; +} + +/* + * If the BIOS does not set the IO base addaress to XX00, 343 will fail. + */ +#define HPT34X_PCI_INIT_REG 0x80 + +static unsigned int __devinit init_chipset_hpt34x(struct pci_dev *dev, const char *name) +{ + int i = 0; + unsigned long hpt34xIoBase = pci_resource_start(dev, 4); + unsigned long hpt_addr[4] = { 0x20, 0x34, 0x28, 0x3c }; + unsigned long hpt_addr_len[4] = { 7, 3, 7, 3 }; + u16 cmd; + unsigned long flags; + + local_irq_save(flags); + + pci_write_config_byte(dev, HPT34X_PCI_INIT_REG, 0x00); + pci_read_config_word(dev, PCI_COMMAND, &cmd); + + if (cmd & PCI_COMMAND_MEMORY) { + if (pci_resource_start(dev, PCI_ROM_RESOURCE)) { + pci_write_config_byte(dev, PCI_ROM_ADDRESS, + dev->resource[PCI_ROM_RESOURCE].start | PCI_ROM_ADDRESS_ENABLE); + printk(KERN_INFO "HPT345: ROM enabled at 0x%08lx\n", + dev->resource[PCI_ROM_RESOURCE].start); + } + pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0xF0); + } else { + pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x20); + } + + /* + * Since 20-23 can be assigned and are R/W, we correct them. + */ + pci_write_config_word(dev, PCI_COMMAND, cmd & ~PCI_COMMAND_IO); + for(i=0; i<4; i++) { + dev->resource[i].start = (hpt34xIoBase + hpt_addr[i]); + dev->resource[i].end = dev->resource[i].start + hpt_addr_len[i]; + dev->resource[i].flags = IORESOURCE_IO; + pci_write_config_dword(dev, + (PCI_BASE_ADDRESS_0 + (i * 4)), + dev->resource[i].start); + } + pci_write_config_word(dev, PCI_COMMAND, cmd); + + local_irq_restore(flags); + + return dev->irq; +} + +static void __devinit init_hwif_hpt34x(ide_hwif_t *hwif) +{ + u16 pcicmd = 0; + + hwif->autodma = 0; + + hwif->tuneproc = &hpt34x_tune_drive; + hwif->speedproc = &hpt34x_tune_chipset; + hwif->no_dsc = 1; + hwif->drives[0].autotune = 1; + hwif->drives[1].autotune = 1; + + pci_read_config_word(hwif->pci_dev, PCI_COMMAND, &pcicmd); + + if (!hwif->dma_base) + return; + + hwif->ultra_mask = 0x07; + hwif->mwdma_mask = 0x07; + hwif->swdma_mask = 0x07; + + hwif->ide_dma_check = &hpt34x_config_drive_xfer_rate; + if (!noautodma) + hwif->autodma = (pcicmd & PCI_COMMAND_MEMORY) ? 1 : 0; + hwif->drives[0].autodma = hwif->autodma; + hwif->drives[1].autodma = hwif->autodma; +} + +static ide_pci_device_t hpt34x_chipset __devinitdata = { + .name = "HPT34X", + .init_chipset = init_chipset_hpt34x, + .init_hwif = init_hwif_hpt34x, + .channels = 2, + .autodma = NOAUTODMA, + .bootable = NEVER_BOARD, + .extra = 16 +}; + +static int __devinit hpt34x_init_one(struct pci_dev *dev, const struct pci_device_id *id) +{ + ide_pci_device_t *d = &hpt34x_chipset; + static char *chipset_names[] = {"HPT343", "HPT345"}; + u16 pcicmd = 0; + + pci_read_config_word(dev, PCI_COMMAND, &pcicmd); + + d->name = chipset_names[(pcicmd & PCI_COMMAND_MEMORY) ? 1 : 0]; + d->bootable = (pcicmd & PCI_COMMAND_MEMORY) ? OFF_BOARD : NEVER_BOARD; + + return ide_setup_pci_device(dev, d); +} + +static struct pci_device_id hpt34x_pci_tbl[] = { + { PCI_VENDOR_ID_TTI, PCI_DEVICE_ID_TTI_HPT343, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, + { 0, }, +}; +MODULE_DEVICE_TABLE(pci, hpt34x_pci_tbl); + +static struct pci_driver driver = { + .name = "HPT34x_IDE", + .id_table = hpt34x_pci_tbl, + .probe = hpt34x_init_one, +}; + +static int hpt34x_ide_init(void) +{ + return ide_pci_register_driver(&driver); +} + +module_init(hpt34x_ide_init); + +MODULE_AUTHOR("Andre Hedrick"); +MODULE_DESCRIPTION("PCI driver module for Highpoint 34x IDE"); +MODULE_LICENSE("GPL"); |
