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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>
82 lines
1.7 KiB
C
82 lines
1.7 KiB
C
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/ide.h>
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#define DRV_NAME "ide-4drives"
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static int probe_4drives;
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module_param_named(probe, probe_4drives, bool, 0);
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MODULE_PARM_DESC(probe, "probe for generic IDE chipset with 4 drives/port");
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static void ide_4drives_init_dev(ide_drive_t *drive)
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{
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if (drive->hwif->channel)
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drive->select.all ^= 0x20;
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}
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static const struct ide_port_ops ide_4drives_port_ops = {
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.init_dev = ide_4drives_init_dev,
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};
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static const struct ide_port_info ide_4drives_port_info = {
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.port_ops = &ide_4drives_port_ops,
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.host_flags = IDE_HFLAG_SERIALIZE | IDE_HFLAG_NO_DMA,
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};
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static int __init ide_4drives_init(void)
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{
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ide_hwif_t *hwif, *mate;
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unsigned long base = 0x1f0, ctl = 0x3f6;
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hw_regs_t hw, *hws[] = { NULL, NULL, NULL, NULL };
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u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
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if (probe_4drives == 0)
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return -ENODEV;
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if (!request_region(base, 8, DRV_NAME)) {
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printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
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DRV_NAME, base, base + 7);
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return -EBUSY;
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}
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if (!request_region(ctl, 1, DRV_NAME)) {
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printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
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DRV_NAME, ctl);
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release_region(base, 8);
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return -EBUSY;
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}
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memset(&hw, 0, sizeof(hw));
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ide_std_init_ports(&hw, base, ctl);
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hw.irq = 14;
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hw.chipset = ide_4drives;
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hwif = ide_find_port();
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if (hwif) {
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hwif->chipset = ide_4drives;
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hws[0] = &hw;
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idx[0] = hwif->index;
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}
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mate = ide_find_port();
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if (mate) {
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hws[1] = &hw;
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idx[1] = mate->index;
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}
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ide_device_add(idx, &ide_4drives_port_info, hws);
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return 0;
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}
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module_init(ide_4drives_init);
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MODULE_AUTHOR("Bartlomiej Zolnierkiewicz");
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MODULE_DESCRIPTION("generic IDE chipset with 4 drives/port support");
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MODULE_LICENSE("GPL");
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