X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Fide%2Fide-generic.c;h=54d7c4685d23aa5e62ce606e7b994a57bb54b08a;hb=aab9796f5580a988c46c130a727cdc398a05317b;hp=9ebec08eefd92258e66c88602c965a953ded4114;hpb=d684b21f89b96af3adc06877f29fd9f5214b23c8;p=safe%2Fjmp%2Flinux-2.6

diff --git a/drivers/ide/ide-generic.c b/drivers/ide/ide-generic.c
index 9ebec08..54d7c46 100644
--- a/drivers/ide/ide-generic.c
+++ b/drivers/ide/ide-generic.c
@@ -1,7 +1,7 @@
 /*
  * generic/default IDE host driver
  *
- * Copyright (C) 2004 Bartlomiej Zolnierkiewicz
+ * Copyright (C) 2004, 2008-2009 Bartlomiej Zolnierkiewicz
  * This code was split off from ide.c.  See it for original copyrights.
  *
  * May be copied or modified under the terms of the GNU General Public License.
@@ -11,24 +11,137 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/ide.h>
+#include <linux/pci_ids.h>
 
-static int __init ide_generic_init(void)
+/* FIXME: convert arm and m32r to use ide_platform host driver */
+#ifdef CONFIG_ARM
+#include <asm/irq.h>
+#endif
+#ifdef CONFIG_M32R
+#include <asm/m32r.h>
+#endif
+
+#define DRV_NAME	"ide_generic"
+
+static int probe_mask;
+module_param(probe_mask, int, 0);
+MODULE_PARM_DESC(probe_mask, "probe mask for legacy ISA IDE ports");
+
+static const struct ide_port_info ide_generic_port_info = {
+	.host_flags		= IDE_HFLAG_NO_DMA,
+	.chipset		= ide_generic,
+};
+
+#ifdef CONFIG_ARM
+static const u16 legacy_bases[] = { 0x1f0 };
+static const int legacy_irqs[]  = { IRQ_HARDDISK };
+#elif defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_MAPPI2) || \
+      defined(CONFIG_PLAT_OPSPUT)
+static const u16 legacy_bases[] = { 0x1f0 };
+static const int legacy_irqs[]  = { PLD_IRQ_CFIREQ };
+#elif defined(CONFIG_PLAT_MAPPI3)
+static const u16 legacy_bases[] = { 0x1f0, 0x170 };
+static const int legacy_irqs[]  = { PLD_IRQ_CFIREQ, PLD_IRQ_IDEIREQ };
+#elif defined(CONFIG_ALPHA)
+static const u16 legacy_bases[] = { 0x1f0, 0x170, 0x1e8, 0x168 };
+static const int legacy_irqs[]  = { 14, 15, 11, 10 };
+#else
+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)
 {
-	u8 idx[MAX_HWIFS];
-	int i;
+#ifdef CONFIG_PCI
+	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;
 
-	for (i = 0; i < MAX_HWIFS; i++) {
-		ide_hwif_t *hwif = &ide_hwifs[i];
+		/* 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;
 
-		if (hwif->io_ports[IDE_DATA_OFFSET] && !hwif->present)
-			idx[i] = i;
-		else
-			idx[i] = 0xff;
+		/* 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;
+			}
+		}
 	}
+#endif
+}
 
-	ide_device_add_all(idx, NULL);
+static int __init ide_generic_init(void)
+{
+	struct ide_hw hw, *hws[] = { &hw };
+	unsigned long io_addr;
+	int i, rc = 0, primary = 0, secondary = 0;
+
+	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;
+
+		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];
+
+		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 "
+						"not free.\n",
+						DRV_NAME, io_addr, io_addr + 7);
+				rc = -EBUSY;
+				continue;
+			}
+
+			if (!request_region(io_addr + 0x206, 1, DRV_NAME)) {
+				printk(KERN_ERR "%s: I/O resource 0x%lX "
+						"not free.\n",
+						DRV_NAME, io_addr + 0x206);
+				release_region(io_addr, 8);
+				rc = -EBUSY;
+				continue;
+			}
+
+			memset(&hw, 0, sizeof(hw));
+			ide_std_init_ports(&hw, io_addr, io_addr + 0x206);
+#ifdef CONFIG_IA64
+			hw.irq = isa_irq_to_vector(legacy_irqs[i]);
+#else
+			hw.irq = legacy_irqs[i];
+#endif
+			rc = ide_host_add(&ide_generic_port_info, hws, 1, NULL);
+			if (rc) {
+				release_region(io_addr + 0x206, 1);
+				release_region(io_addr, 8);
+			}
+		}
+	}
 
-	return 0;
+	return rc;
 }
 
 module_init(ide_generic_init);