Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / ide / ide-legacy.c

diff --git a/kernel/drivers/ide/ide-legacy.c b/kernel/drivers/ide/ide-legacy.c
new file mode 100644 (file)
index 0000000..30fe363
--- /dev/null
+++ b/kernel/drivers/ide/ide-legacy.c
@@ -0,0 +1,58 @@
+#include <linux/kernel.h>
+#include <linux/export.h>
+#include <linux/ide.h>
+
+static void ide_legacy_init_one(struct ide_hw **hws, struct ide_hw *hw,
+                               u8 port_no, const struct ide_port_info *d,
+                               unsigned long config)
+{
+       unsigned long base, ctl;
+       int irq;
+
+       if (port_no == 0) {
+               base = 0x1f0;
+               ctl  = 0x3f6;
+               irq  = 14;
+       } else {
+               base = 0x170;
+               ctl  = 0x376;
+               irq  = 15;
+       }
+
+       if (!request_region(base, 8, d->name)) {
+               printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
+                               d->name, base, base + 7);
+               return;
+       }
+
+       if (!request_region(ctl, 1, d->name)) {
+               printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
+                               d->name, ctl);
+               release_region(base, 8);
+               return;
+       }
+
+       ide_std_init_ports(hw, base, ctl);
+       hw->irq = irq;
+       hw->config = config;
+
+       hws[port_no] = hw;
+}
+
+int ide_legacy_device_add(const struct ide_port_info *d, unsigned long config)
+{
+       struct ide_hw hw[2], *hws[] = { NULL, NULL };
+
+       memset(&hw, 0, sizeof(hw));
+
+       if ((d->host_flags & IDE_HFLAG_QD_2ND_PORT) == 0)
+               ide_legacy_init_one(hws, &hw[0], 0, d, config);
+       ide_legacy_init_one(hws, &hw[1], 1, d, config);
+
+       if (hws[0] == NULL && hws[1] == NULL &&
+           (d->host_flags & IDE_HFLAG_SINGLE))
+               return -ENOENT;
+
+       return ide_host_add(d, hws, 2, NULL);
+}
+EXPORT_SYMBOL_GPL(ide_legacy_device_add);