c97c6aca75
* Add 'hw_regs_t **hws' argument to ide_device_add[_all]() and convert
host drivers + ide_legacy_init_one() + ide_setup_pci_device[s]() to use
it instead of calling ide_init_port_hw() directly.
[ However if host has > 1 port we must still set hwif->chipset to hint
consecutive ide_find_port() call that the previous slot is occupied. ]
* Unexport ide_init_port_hw().
v2:
* Use defines instead of hard-coded values in buddha.c, gayle.c and q40ide.c.
(Suggested by Geert Uytterhoeven)
* Better patch description.
v3:
* Fix build problem in ide-cs.c. (Noticed by Stephen Rothwell)
There should be no functional changes caused by this patch.
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
129 lines
2.8 KiB
C
129 lines
2.8 KiB
C
/*
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* Atari Falcon IDE Driver
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*
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* Created 12 Jul 1997 by Geert Uytterhoeven
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive for
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* more details.
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/mm.h>
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#include <linux/interrupt.h>
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#include <linux/blkdev.h>
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#include <linux/hdreg.h>
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#include <linux/ide.h>
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#include <linux/init.h>
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#include <asm/setup.h>
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#include <asm/atarihw.h>
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#include <asm/atariints.h>
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#include <asm/atari_stdma.h>
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#define DRV_NAME "falconide"
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/*
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* Base of the IDE interface
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*/
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#define ATA_HD_BASE 0xfff00000
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/*
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* Offsets from the above base
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*/
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#define ATA_HD_CONTROL 0x39
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/*
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* falconide_intr_lock is used to obtain access to the IDE interrupt,
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* which is shared between several drivers.
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*/
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int falconide_intr_lock;
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EXPORT_SYMBOL(falconide_intr_lock);
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static void falconide_input_data(ide_drive_t *drive, struct request *rq,
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void *buf, unsigned int len)
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{
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unsigned long data_addr = drive->hwif->io_ports.data_addr;
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if (drive->media == ide_disk && rq && rq->cmd_type == REQ_TYPE_FS)
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return insw(data_addr, buf, (len + 1) / 2);
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insw_swapw(data_addr, buf, (len + 1) / 2);
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}
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static void falconide_output_data(ide_drive_t *drive, struct request *rq,
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void *buf, unsigned int len)
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{
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unsigned long data_addr = drive->hwif->io_ports.data_addr;
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if (drive->media == ide_disk && rq && rq->cmd_type == REQ_TYPE_FS)
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return outsw(data_addr, buf, (len + 1) / 2);
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outsw_swapw(data_addr, buf, (len + 1) / 2);
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}
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static void __init falconide_setup_ports(hw_regs_t *hw)
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{
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int i;
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memset(hw, 0, sizeof(*hw));
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hw->io_ports.data_addr = ATA_HD_BASE;
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for (i = 1; i < 8; i++)
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hw->io_ports_array[i] = ATA_HD_BASE + 1 + i * 4;
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hw->io_ports.ctl_addr = ATA_HD_BASE + ATA_HD_CONTROL;
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hw->irq = IRQ_MFP_IDE;
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hw->ack_intr = NULL;
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hw->chipset = ide_generic;
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}
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/*
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* Probe for a Falcon IDE interface
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*/
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static int __init falconide_init(void)
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{
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ide_hwif_t *hwif;
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hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
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if (!MACH_IS_ATARI || !ATARIHW_PRESENT(IDE))
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return 0;
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printk(KERN_INFO "ide: Falcon IDE controller\n");
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if (!request_mem_region(ATA_HD_BASE, 0x40, DRV_NAME)) {
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printk(KERN_ERR "%s: resources busy\n", DRV_NAME);
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return -EBUSY;
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}
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falconide_setup_ports(&hw);
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hwif = ide_find_port();
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if (hwif) {
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u8 index = hwif->index;
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u8 idx[4] = { index, 0xff, 0xff, 0xff };
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/* Atari has a byte-swapped IDE interface */
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hwif->input_data = falconide_input_data;
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hwif->output_data = falconide_output_data;
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ide_get_lock(NULL, NULL);
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ide_device_add(idx, NULL, hws);
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ide_release_lock();
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}
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return 0;
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}
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module_init(falconide_init);
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MODULE_LICENSE("GPL");
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