59 lines
1.3 KiB
C
59 lines
1.3 KiB
C
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#include <linux/kernel.h>
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#include <linux/ide.h>
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static void ide_legacy_init_one(hw_regs_t **hws, hw_regs_t *hw,
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u8 port_no, const struct ide_port_info *d,
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unsigned long config)
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{
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unsigned long base, ctl;
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int irq;
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if (port_no == 0) {
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base = 0x1f0;
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ctl = 0x3f6;
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irq = 14;
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} else {
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base = 0x170;
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ctl = 0x376;
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irq = 15;
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}
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if (!request_region(base, 8, d->name)) {
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printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
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d->name, base, base + 7);
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return;
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}
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if (!request_region(ctl, 1, d->name)) {
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printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
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d->name, ctl);
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release_region(base, 8);
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return;
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}
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ide_std_init_ports(hw, base, ctl);
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hw->irq = irq;
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hw->chipset = d->chipset;
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hw->config = config;
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hws[port_no] = hw;
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}
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int ide_legacy_device_add(const struct ide_port_info *d, unsigned long config)
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{
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hw_regs_t hw[2], *hws[] = { NULL, NULL, NULL, NULL };
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memset(&hw, 0, sizeof(hw));
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if ((d->host_flags & IDE_HFLAG_QD_2ND_PORT) == 0)
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ide_legacy_init_one(hws, &hw[0], 0, d, config);
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ide_legacy_init_one(hws, &hw[1], 1, d, config);
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if (hws[0] == NULL && hws[1] == NULL &&
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(d->host_flags & IDE_HFLAG_SINGLE))
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return -ENOENT;
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return ide_host_add(d, hws, NULL);
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}
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EXPORT_SYMBOL_GPL(ide_legacy_device_add);
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