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-rw-r--r--drivers/ide/ide-generic.c102
1 files changed, 61 insertions, 41 deletions
diff --git a/drivers/ide/ide-generic.c b/drivers/ide/ide-generic.c
index 8fe8b5b9cf7..81a5282ce1e 100644
--- a/drivers/ide/ide-generic.c
+++ b/drivers/ide/ide-generic.c
@@ -19,6 +19,7 @@
#include <linux/init.h>
#include <linux/module.h>
#include <linux/ide.h>
+#include <linux/pci_ids.h>
/* FIXME: convert m32r to use ide_platform host driver */
#ifdef CONFIG_M32R
@@ -27,7 +28,7 @@
#define DRV_NAME "ide_generic"
-static int probe_mask = 0x03;
+static int probe_mask;
module_param(probe_mask, int, 0);
MODULE_PARM_DESC(probe_mask, "probe mask for legacy ISA IDE ports");
@@ -100,27 +101,64 @@ static const u16 legacy_bases[] = { 0x1f0, 0x170, 0x1e8, 0x168, 0x1e0, 0x160 };
static const int legacy_irqs[] = { 14, 15, 11, 10, 8, 12 };
#endif
+static void ide_generic_check_pci_legacy_iobases(int *primary, int *secondary)
+{
+ struct pci_dev *p = NULL;
+ u16 val;
+
+ for_each_pci_dev(p) {
+
+ if (pci_resource_start(p, 0) == 0x1f0)
+ *primary = 1;
+ if (pci_resource_start(p, 2) == 0x170)
+ *secondary = 1;
+
+ /* Cyrix CS55{1,2}0 pre SFF MWDMA ATA on the bridge */
+ if (p->vendor == PCI_VENDOR_ID_CYRIX &&
+ (p->device == PCI_DEVICE_ID_CYRIX_5510 ||
+ p->device == PCI_DEVICE_ID_CYRIX_5520))
+ *primary = *secondary = 1;
+
+ /* Intel MPIIX - PIO ATA on non PCI side of bridge */
+ if (p->vendor == PCI_VENDOR_ID_INTEL &&
+ p->device == PCI_DEVICE_ID_INTEL_82371MX) {
+
+ pci_read_config_word(p, 0x6C, &val);
+ if (val & 0x8000) {
+ /* ATA port enabled */
+ if (val & 0x4000)
+ *secondary = 1;
+ else
+ *primary = 1;
+ }
+ }
+ }
+}
+
static int __init ide_generic_init(void)
{
- hw_regs_t hw[MAX_HWIFS], *hws[MAX_HWIFS];
- struct ide_host *host;
+ hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
unsigned long io_addr;
- int i, rc;
+ int i, rc = 0, primary = 0, secondary = 0;
-#ifdef CONFIG_MIPS
- if (!ide_probe_legacy())
- return -ENODEV;
-#endif
- printk(KERN_INFO DRV_NAME ": please use \"probe_mask=0x3f\" module "
- "parameter for probing all legacy ISA IDE ports\n");
+ ide_generic_check_pci_legacy_iobases(&primary, &secondary);
+
+ if (!probe_mask) {
+ printk(KERN_INFO DRV_NAME ": please use \"probe_mask=0x3f\" "
+ "module parameter for probing all legacy ISA IDE ports\n");
+
+ if (primary == 0)
+ probe_mask |= 0x1;
- memset(hws, 0, sizeof(hw_regs_t *) * MAX_HWIFS);
+ if (secondary == 0)
+ probe_mask |= 0x2;
+ } else
+ printk(KERN_INFO DRV_NAME ": enforcing probing of I/O ports "
+ "upon user request\n");
for (i = 0; i < ARRAY_SIZE(legacy_bases); i++) {
io_addr = legacy_bases[i];
- hws[i] = NULL;
-
if ((probe_mask & (1 << i)) && io_addr) {
if (!request_region(io_addr, 8, DRV_NAME)) {
printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX "
@@ -137,45 +175,27 @@ static int __init ide_generic_init(void)
continue;
}
- memset(&hw[i], 0, sizeof(hw[i]));
- ide_std_init_ports(&hw[i], io_addr, io_addr + 0x206);
+ memset(&hw, 0, sizeof(hw));
+ ide_std_init_ports(&hw, io_addr, io_addr + 0x206);
#ifdef CONFIG_IA64
- hw[i].irq = isa_irq_to_vector(legacy_irqs[i]);
+ hw.irq = isa_irq_to_vector(legacy_irqs[i]);
#else
- hw[i].irq = legacy_irqs[i];
+ hw.irq = legacy_irqs[i];
#endif
- hw[i].chipset = ide_generic;
+ hw.chipset = ide_generic;
- hws[i] = &hw[i];
+ rc = ide_host_add(NULL, hws, NULL);
+ if (rc) {
+ release_region(io_addr + 0x206, 1);
+ release_region(io_addr, 8);
+ }
}
}
- host = ide_host_alloc_all(NULL, hws);
- if (host == NULL) {
- rc = -ENOMEM;
- goto err;
- }
-
- rc = ide_host_register(host, NULL, hws);
- if (rc)
- goto err_free;
-
if (ide_generic_sysfs_init())
printk(KERN_ERR DRV_NAME ": failed to create ide_generic "
"class\n");
- return 0;
-err_free:
- ide_host_free(host);
-err:
- for (i = 0; i < MAX_HWIFS; i++) {
- if (hws[i] == NULL)
- continue;
-
- io_addr = hws[i]->io_ports.data_addr;
- release_region(io_addr + 0x206, 1);
- release_region(io_addr, 8);
- }
return rc;
}