48c3c10726
* Add struct ide_host which keeps pointers to host's ports. * Add ide_host_alloc[_all]() and ide_host_remove() helpers. * Pass 'struct ide_host *host' instead of 'u8 *idx' to ide_device_add[_all]() and rename it to ide_host_register[_all](). * Convert host drivers and core code to use struct ide_host. * Remove no longer needed ide_find_port(). * Make ide_find_port_slot() static. * Unexport ide_unregister(). v2: * Add missing 'struct ide_host *host' to macide.c. v3: * Fix build problem in pmac.c (s/ide_alloc_host/ide_host_alloc/) (Noticed by Stephen Rothwell). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
69 lines
1.6 KiB
C
69 lines
1.6 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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struct ide_host *host;
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unsigned long base = 0x1f0, ctl = 0x3f6;
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hw_regs_t hw, *hws[] = { &hw, &hw, NULL, NULL };
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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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host = ide_host_alloc(&ide_4drives_port_info, hws);
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if (host)
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ide_host_register(host, &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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