diff options
Diffstat (limited to 'drivers/ide/it8172.c')
| -rw-r--r-- | drivers/ide/it8172.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/drivers/ide/it8172.c b/drivers/ide/it8172.c deleted file mode 100644 index b6f674ab4fb7..000000000000 --- a/drivers/ide/it8172.c +++ /dev/null @@ -1,165 +0,0 @@ -/* - * - * BRIEF MODULE DESCRIPTION - * IT8172 IDE controller support - * - * Copyright (C) 2000 MontaVista Software Inc. - * Copyright (C) 2008 Shane McDonald - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/ioport.h> -#include <linux/pci.h> -#include <linux/ide.h> -#include <linux/init.h> - -#define DRV_NAME "IT8172" - -static void it8172_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive) -{ - struct pci_dev *dev = to_pci_dev(hwif->dev); - u16 drive_enables; - u32 drive_timing; - const u8 pio = drive->pio_mode - XFER_PIO_0; - - /* - * The highest value of DIOR/DIOW pulse width and recovery time - * that can be set in the IT8172 is 8 PCI clock cycles. As a result, - * it cannot be configured for PIO mode 0. This table sets these - * parameters to the maximum supported by the IT8172. - */ - static const u8 timings[] = { 0x3f, 0x3c, 0x1b, 0x12, 0x0a }; - - pci_read_config_word(dev, 0x40, &drive_enables); - pci_read_config_dword(dev, 0x44, &drive_timing); - - /* - * Enable port 0x44. The IT8172 spec is confused; it calls - * this register the "Slave IDE Timing Register", but in fact, - * it controls timing for both master and slave drives. - */ - drive_enables |= 0x4000; - - drive_enables &= drive->dn ? 0xc006 : 0xc060; - if (drive->media == ide_disk) - /* enable prefetch */ - drive_enables |= 0x0004 << (drive->dn * 4); - if (ide_pio_need_iordy(drive, pio)) - /* enable IORDY sample-point */ - drive_enables |= 0x0002 << (drive->dn * 4); - - drive_timing &= drive->dn ? 0x00003f00 : 0x000fc000; - drive_timing |= timings[pio] << (drive->dn * 6 + 8); - - pci_write_config_word(dev, 0x40, drive_enables); - pci_write_config_dword(dev, 0x44, drive_timing); -} - -static void it8172_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive) -{ - struct pci_dev *dev = to_pci_dev(hwif->dev); - int a_speed = 3 << (drive->dn * 4); - int u_flag = 1 << drive->dn; - int u_speed = 0; - u8 reg48, reg4a; - const u8 speed = drive->dma_mode; - - pci_read_config_byte(dev, 0x48, ®48); - pci_read_config_byte(dev, 0x4a, ®4a); - - if (speed >= XFER_UDMA_0) { - u8 udma = speed - XFER_UDMA_0; - u_speed = udma << (drive->dn * 4); - - pci_write_config_byte(dev, 0x48, reg48 | u_flag); - reg4a &= ~a_speed; - pci_write_config_byte(dev, 0x4a, reg4a | u_speed); - } else { - const u8 mwdma_to_pio[] = { 0, 3, 4 }; - - pci_write_config_byte(dev, 0x48, reg48 & ~u_flag); - pci_write_config_byte(dev, 0x4a, reg4a & ~a_speed); - - drive->pio_mode = - mwdma_to_pio[speed - XFER_MW_DMA_0] + XFER_PIO_0; - - it8172_set_pio_mode(hwif, drive); - } -} - - -static const struct ide_port_ops it8172_port_ops = { - .set_pio_mode = it8172_set_pio_mode, - .set_dma_mode = it8172_set_dma_mode, -}; - -static const struct ide_port_info it8172_port_info = { - .name = DRV_NAME, - .port_ops = &it8172_port_ops, - .enablebits = { {0x41, 0x80, 0x80}, {0x00, 0x00, 0x00} }, - .host_flags = IDE_HFLAG_SINGLE, - .pio_mask = ATA_PIO4 & ~ATA_PIO0, - .mwdma_mask = ATA_MWDMA2, - .udma_mask = ATA_UDMA2, -}; - -static int it8172_init_one(struct pci_dev *dev, const struct pci_device_id *id) -{ - if ((dev->class >> 8) != PCI_CLASS_STORAGE_IDE) - return -ENODEV; /* IT8172 is more than an IDE controller */ - return ide_pci_init_one(dev, &it8172_port_info, NULL); -} - -static struct pci_device_id it8172_pci_tbl[] = { - { PCI_VDEVICE(ITE, PCI_DEVICE_ID_ITE_8172), 0 }, - { 0, }, -}; -MODULE_DEVICE_TABLE(pci, it8172_pci_tbl); - -static struct pci_driver it8172_pci_driver = { - .name = "IT8172_IDE", - .id_table = it8172_pci_tbl, - .probe = it8172_init_one, - .remove = ide_pci_remove, - .suspend = ide_pci_suspend, - .resume = ide_pci_resume, -}; - -static int __init it8172_ide_init(void) -{ - return ide_pci_register_driver(&it8172_pci_driver); -} - -static void __exit it8172_ide_exit(void) -{ - pci_unregister_driver(&it8172_pci_driver); -} - -module_init(it8172_ide_init); -module_exit(it8172_ide_exit); - -MODULE_AUTHOR("Steve Longerbeam"); -MODULE_DESCRIPTION("PCI driver module for ITE 8172 IDE"); -MODULE_LICENSE("GPL"); |