diff options
Diffstat (limited to 'drivers/ide/pci/cs5520.c')
| -rw-r--r-- | drivers/ide/pci/cs5520.c | 195 |
1 files changed, 0 insertions, 195 deletions
diff --git a/drivers/ide/pci/cs5520.c b/drivers/ide/pci/cs5520.c deleted file mode 100644 index 1c163e4ef03..00000000000 --- a/drivers/ide/pci/cs5520.c +++ /dev/null @@ -1,195 +0,0 @@ -/* - * IDE tuning and bus mastering support for the CS5510/CS5520 - * chipsets - * - * The CS5510/CS5520 are slightly unusual devices. Unlike the - * typical IDE controllers they do bus mastering with the drive in - * PIO mode and smarter silicon. - * - * The practical upshot of this is that we must always tune the - * drive for the right PIO mode. We must also ignore all the blacklists - * and the drive bus mastering DMA information. - * - * *** This driver is strictly experimental *** - * - * (c) Copyright Red Hat Inc 2002 - * - * 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, or (at your option) any - * later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * For the avoidance of doubt the "preferred form" of this code is one which - * is in an open non patent encumbered format. Where cryptographic key signing - * forms part of the process of creating an executable the information - * including keys needed to generate an equivalently functional executable - * are deemed to be part of the source code. - * - */ - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/hdreg.h> -#include <linux/init.h> -#include <linux/pci.h> -#include <linux/ide.h> -#include <linux/dma-mapping.h> - -struct pio_clocks -{ - int address; - int assert; - int recovery; -}; - -static struct pio_clocks cs5520_pio_clocks[]={ - {3, 6, 11}, - {2, 5, 6}, - {1, 4, 3}, - {1, 3, 2}, - {1, 2, 1} -}; - -static void cs5520_set_pio_mode(ide_drive_t *drive, const u8 pio) -{ - ide_hwif_t *hwif = HWIF(drive); - struct pci_dev *pdev = to_pci_dev(hwif->dev); - int controller = drive->dn > 1 ? 1 : 0; - - /* FIXME: if DMA = 1 do we need to set the DMA bit here ? */ - - /* 8bit CAT/CRT - 8bit command timing for channel */ - pci_write_config_byte(pdev, 0x62 + controller, - (cs5520_pio_clocks[pio].recovery << 4) | - (cs5520_pio_clocks[pio].assert)); - - /* 0x64 - 16bit Primary, 0x68 - 16bit Secondary */ - - /* FIXME: should these use address ? */ - /* Data read timing */ - pci_write_config_byte(pdev, 0x64 + 4*controller + (drive->dn&1), - (cs5520_pio_clocks[pio].recovery << 4) | - (cs5520_pio_clocks[pio].assert)); - /* Write command timing */ - pci_write_config_byte(pdev, 0x66 + 4*controller + (drive->dn&1), - (cs5520_pio_clocks[pio].recovery << 4) | - (cs5520_pio_clocks[pio].assert)); -} - -static void cs5520_set_dma_mode(ide_drive_t *drive, const u8 speed) -{ - printk(KERN_ERR "cs55x0: bad ide timing.\n"); - - cs5520_set_pio_mode(drive, 0); -} - -/* - * We wrap the DMA activate to set the vdma flag. This is needed - * so that the IDE DMA layer issues PIO not DMA commands over the - * DMA channel - * - * ATAPI is harder so disable it for now using IDE_HFLAG_NO_ATAPI_DMA - */ - -static void cs5520_dma_host_set(ide_drive_t *drive, int on) -{ - drive->vdma = on; - ide_dma_host_set(drive, on); -} - -static void __devinit init_hwif_cs5520(ide_hwif_t *hwif) -{ - hwif->set_pio_mode = &cs5520_set_pio_mode; - hwif->set_dma_mode = &cs5520_set_dma_mode; - - if (hwif->dma_base == 0) - return; - - hwif->dma_host_set = &cs5520_dma_host_set; -} - -#define DECLARE_CS_DEV(name_str) \ - { \ - .name = name_str, \ - .init_hwif = init_hwif_cs5520, \ - .host_flags = IDE_HFLAG_ISA_PORTS | \ - IDE_HFLAG_CS5520 | \ - IDE_HFLAG_VDMA | \ - IDE_HFLAG_NO_ATAPI_DMA | \ - IDE_HFLAG_ABUSE_SET_DMA_MODE |\ - IDE_HFLAG_BOOTABLE, \ - .pio_mask = ATA_PIO4, \ - } - -static const struct ide_port_info cyrix_chipsets[] __devinitdata = { - /* 0 */ DECLARE_CS_DEV("Cyrix 5510"), - /* 1 */ DECLARE_CS_DEV("Cyrix 5520") -}; - -/* - * The 5510/5520 are a bit weird. They don't quite set up the way - * the PCI helper layer expects so we must do much of the set up - * work longhand. - */ - -static int __devinit cs5520_init_one(struct pci_dev *dev, const struct pci_device_id *id) -{ - const struct ide_port_info *d = &cyrix_chipsets[id->driver_data]; - u8 idx[4] = { 0xff, 0xff, 0xff, 0xff }; - - ide_setup_pci_noise(dev, d); - - /* We must not grab the entire device, it has 'ISA' space in its - * BARS too and we will freak out other bits of the kernel - */ - if (pci_enable_device_io(dev)) { - printk(KERN_WARNING "%s: Unable to enable 55x0.\n", d->name); - return -ENODEV; - } - pci_set_master(dev); - if (pci_set_dma_mask(dev, DMA_32BIT_MASK)) { - printk(KERN_WARNING "cs5520: No suitable DMA available.\n"); - return -ENODEV; - } - - /* - * Now the chipset is configured we can let the core - * do all the device setup for us - */ - - ide_pci_setup_ports(dev, d, 14, &idx[0]); - - ide_device_add(idx, d); - - return 0; -} - -static const struct pci_device_id cs5520_pci_tbl[] = { - { PCI_VDEVICE(CYRIX, PCI_DEVICE_ID_CYRIX_5510), 0 }, - { PCI_VDEVICE(CYRIX, PCI_DEVICE_ID_CYRIX_5520), 1 }, - { 0, }, -}; -MODULE_DEVICE_TABLE(pci, cs5520_pci_tbl); - -static struct pci_driver driver = { - .name = "Cyrix_IDE", - .id_table = cs5520_pci_tbl, - .probe = cs5520_init_one, -}; - -static int __init cs5520_ide_init(void) -{ - return ide_pci_register_driver(&driver); -} - -module_init(cs5520_ide_init); - -MODULE_AUTHOR("Alan Cox"); -MODULE_DESCRIPTION("PCI driver module for Cyrix 5510/5520 IDE"); -MODULE_LICENSE("GPL"); |