diff options
Diffstat (limited to 'drivers/ide/cy82c693.c')
| -rw-r--r-- | drivers/ide/cy82c693.c | 234 |
1 files changed, 0 insertions, 234 deletions
diff --git a/drivers/ide/cy82c693.c b/drivers/ide/cy82c693.c deleted file mode 100644 index bc01660ee8fd..000000000000 --- a/drivers/ide/cy82c693.c +++ /dev/null @@ -1,234 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (C) 1998-2000 Andreas S. Krebs (akrebs@altavista.net), Maintainer - * Copyright (C) 1998-2002 Andre Hedrick <andre@linux-ide.org>, Integrator - * Copyright (C) 2007-2011 Bartlomiej Zolnierkiewicz - * - * CYPRESS CY82C693 chipset IDE controller - * - * The CY82C693 chipset is used on Digital's PC-Alpha 164SX boards. - */ - -#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 "cy82c693" - -/* - * NOTE: the value for busmaster timeout is tricky and I got it by - * trial and error! By using a to low value will cause DMA timeouts - * and drop IDE performance, and by using a to high value will cause - * audio playback to scatter. - * If you know a better value or how to calc it, please let me know. - */ - -/* twice the value written in cy82c693ub datasheet */ -#define BUSMASTER_TIMEOUT 0x50 -/* - * the value above was tested on my machine and it seems to work okay - */ - -/* here are the offset definitions for the registers */ -#define CY82_IDE_CMDREG 0x04 -#define CY82_IDE_ADDRSETUP 0x48 -#define CY82_IDE_MASTER_IOR 0x4C -#define CY82_IDE_MASTER_IOW 0x4D -#define CY82_IDE_SLAVE_IOR 0x4E -#define CY82_IDE_SLAVE_IOW 0x4F -#define CY82_IDE_MASTER_8BIT 0x50 -#define CY82_IDE_SLAVE_8BIT 0x51 - -#define CY82_INDEX_PORT 0x22 -#define CY82_DATA_PORT 0x23 - -#define CY82_INDEX_CHANNEL0 0x30 -#define CY82_INDEX_CHANNEL1 0x31 -#define CY82_INDEX_TIMEOUT 0x32 - -/* - * set DMA mode a specific channel for CY82C693 - */ - -static void cy82c693_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive) -{ - const u8 mode = drive->dma_mode; - u8 single = (mode & 0x10) >> 4, index = 0, data = 0; - - index = hwif->channel ? CY82_INDEX_CHANNEL1 : CY82_INDEX_CHANNEL0; - - data = (mode & 3) | (single << 2); - - outb(index, CY82_INDEX_PORT); - outb(data, CY82_DATA_PORT); - - /* - * note: below we set the value for Bus Master IDE TimeOut Register - * I'm not absolutely sure what this does, but it solved my problem - * with IDE DMA and sound, so I now can play sound and work with - * my IDE driver at the same time :-) - * - * If you know the correct (best) value for this register please - * let me know - ASK - */ - - data = BUSMASTER_TIMEOUT; - outb(CY82_INDEX_TIMEOUT, CY82_INDEX_PORT); - outb(data, CY82_DATA_PORT); -} - -static void cy82c693_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive) -{ - struct pci_dev *dev = to_pci_dev(hwif->dev); - int bus_speed = ide_pci_clk ? ide_pci_clk : 33; - const unsigned long T = 1000000 / bus_speed; - unsigned int addrCtrl; - struct ide_timing t; - u8 time_16, time_8; - - /* select primary or secondary channel */ - if (drive->dn > 1) { /* drive is on the secondary channel */ - dev = pci_get_slot(dev->bus, dev->devfn+1); - if (!dev) { - printk(KERN_ERR "%s: tune_drive: " - "Cannot find secondary interface!\n", - drive->name); - return; - } - } - - ide_timing_compute(drive, drive->pio_mode, &t, T, 1); - - time_16 = clamp_val(t.recover - 1, 0, 15) | - (clamp_val(t.active - 1, 0, 15) << 4); - time_8 = clamp_val(t.act8b - 1, 0, 15) | - (clamp_val(t.rec8b - 1, 0, 15) << 4); - - /* now let's write the clocks registers */ - if ((drive->dn & 1) == 0) { - /* - * set master drive - * address setup control register - * is 32 bit !!! - */ - pci_read_config_dword(dev, CY82_IDE_ADDRSETUP, &addrCtrl); - - addrCtrl &= (~0xF); - addrCtrl |= clamp_val(t.setup - 1, 0, 15); - pci_write_config_dword(dev, CY82_IDE_ADDRSETUP, addrCtrl); - - /* now let's set the remaining registers */ - pci_write_config_byte(dev, CY82_IDE_MASTER_IOR, time_16); - pci_write_config_byte(dev, CY82_IDE_MASTER_IOW, time_16); - pci_write_config_byte(dev, CY82_IDE_MASTER_8BIT, time_8); - } else { - /* - * set slave drive - * address setup control register - * is 32 bit !!! - */ - pci_read_config_dword(dev, CY82_IDE_ADDRSETUP, &addrCtrl); - - addrCtrl &= (~0xF0); - addrCtrl |= (clamp_val(t.setup - 1, 0, 15) << 4); - pci_write_config_dword(dev, CY82_IDE_ADDRSETUP, addrCtrl); - - /* now let's set the remaining registers */ - pci_write_config_byte(dev, CY82_IDE_SLAVE_IOR, time_16); - pci_write_config_byte(dev, CY82_IDE_SLAVE_IOW, time_16); - pci_write_config_byte(dev, CY82_IDE_SLAVE_8BIT, time_8); - } - if (drive->dn > 1) - pci_dev_put(dev); -} - -static void init_iops_cy82c693(ide_hwif_t *hwif) -{ - static ide_hwif_t *primary; - struct pci_dev *dev = to_pci_dev(hwif->dev); - - if (PCI_FUNC(dev->devfn) == 1) - primary = hwif; - else { - hwif->mate = primary; - hwif->channel = 1; - } -} - -static const struct ide_port_ops cy82c693_port_ops = { - .set_pio_mode = cy82c693_set_pio_mode, - .set_dma_mode = cy82c693_set_dma_mode, -}; - -static const struct ide_port_info cy82c693_chipset = { - .name = DRV_NAME, - .init_iops = init_iops_cy82c693, - .port_ops = &cy82c693_port_ops, - .host_flags = IDE_HFLAG_SINGLE, - .pio_mask = ATA_PIO4, - .swdma_mask = ATA_SWDMA2, - .mwdma_mask = ATA_MWDMA2, -}; - -static int cy82c693_init_one(struct pci_dev *dev, - const struct pci_device_id *id) -{ - struct pci_dev *dev2; - int ret = -ENODEV; - - /* CY82C693 is more than only a IDE controller. - Function 1 is primary IDE channel, function 2 - secondary. */ - if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && - PCI_FUNC(dev->devfn) == 1) { - dev2 = pci_get_slot(dev->bus, dev->devfn + 1); - ret = ide_pci_init_two(dev, dev2, &cy82c693_chipset, NULL); - if (ret) - pci_dev_put(dev2); - } - return ret; -} - -static void cy82c693_remove(struct pci_dev *dev) -{ - struct ide_host *host = pci_get_drvdata(dev); - struct pci_dev *dev2 = host->dev[1] ? to_pci_dev(host->dev[1]) : NULL; - - ide_pci_remove(dev); - pci_dev_put(dev2); -} - -static const struct pci_device_id cy82c693_pci_tbl[] = { - { PCI_VDEVICE(CONTAQ, PCI_DEVICE_ID_CONTAQ_82C693), 0 }, - { 0, }, -}; -MODULE_DEVICE_TABLE(pci, cy82c693_pci_tbl); - -static struct pci_driver cy82c693_pci_driver = { - .name = "Cypress_IDE", - .id_table = cy82c693_pci_tbl, - .probe = cy82c693_init_one, - .remove = cy82c693_remove, - .suspend = ide_pci_suspend, - .resume = ide_pci_resume, -}; - -static int __init cy82c693_ide_init(void) -{ - return ide_pci_register_driver(&cy82c693_pci_driver); -} - -static void __exit cy82c693_ide_exit(void) -{ - pci_unregister_driver(&cy82c693_pci_driver); -} - -module_init(cy82c693_ide_init); -module_exit(cy82c693_ide_exit); - -MODULE_AUTHOR("Andreas Krebs, Andre Hedrick, Bartlomiej Zolnierkiewicz"); -MODULE_DESCRIPTION("PCI driver module for the Cypress CY82C693 IDE"); -MODULE_LICENSE("GPL"); |