Logo Search packages:      
Sourcecode: linux version File versions  Download package

hpt34x.c

/*
 * 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/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 void hpt34x_set_mode(ide_drive_t *drive, const u8 speed)
{
      struct pci_dev *dev     = HWIF(drive)->pci_dev;
      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, &reg1);
      pci_read_config_dword(dev, 0x48, &reg2);
      tmp1 = ((lo_speed << (3*drive->dn)) | (reg1 & ~(7 << (3*drive->dn))));
      tmp2 = ((hi_speed << drive->dn) | (reg2 & ~(0x11 << drive->dn)));
      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 */
}

static void hpt34x_set_pio_mode(ide_drive_t *drive, const u8 pio)
{
      hpt34x_set_mode(drive, XFER_PIO_0 + pio);
}

/*
 * 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)
            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)
{
      hwif->set_pio_mode = &hpt34x_set_pio_mode;
      hwif->set_dma_mode = &hpt34x_set_mode;
}

static const struct ide_port_info hpt34x_chipsets[] __devinitdata = {
      { /* 0 */
            .name       = "HPT343",
            .init_chipset     = init_chipset_hpt34x,
            .init_hwif  = init_hwif_hpt34x,
            .extra            = 16,
            .host_flags = IDE_HFLAG_NO_ATAPI_DMA |
                          IDE_HFLAG_NO_AUTODMA,
            .pio_mask   = ATA_PIO5,
      },
      { /* 1 */
            .name       = "HPT345",
            .init_chipset     = init_chipset_hpt34x,
            .init_hwif  = init_hwif_hpt34x,
            .extra            = 16,
            .host_flags = IDE_HFLAG_NO_ATAPI_DMA |
                          IDE_HFLAG_NO_AUTODMA |
                          IDE_HFLAG_OFF_BOARD,
            .pio_mask   = ATA_PIO5,
#ifdef CONFIG_HPT34X_AUTODMA
            .swdma_mask = ATA_SWDMA2,
            .mwdma_mask = ATA_MWDMA2,
            .udma_mask  = ATA_UDMA2,
#endif
      }
};

static int __devinit hpt34x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
      const struct ide_port_info *d;
      u16 pcicmd = 0;

      pci_read_config_word(dev, PCI_COMMAND, &pcicmd);

      d = &hpt34x_chipsets[(pcicmd & PCI_COMMAND_MEMORY) ? 1 : 0];

      return ide_setup_pci_device(dev, d);
}

static const struct pci_device_id hpt34x_pci_tbl[] = {
      { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT343), 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 __init 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");

Generated by  Doxygen 1.6.0   Back to index