Initial import

1 files changed, 149 insertions, 0 deletions

diff --git a/drivers/ide/ide-generic.c b/drivers/ide/ide-generic.c
new file mode 100644
index 000000000..54d7c4685
--- /dev/null
+++ b/drivers/ide/ide-generic.c
@@ -0,0 +1,149 @@
+/*
+ * generic/default IDE host driver
+ *
+ * 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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/ide.h>
+#include <linux/pci_ids.h>
+
+/* 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)
+{
+#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;
+
+		/* 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;
+			}
+		}
+	}
+#endif
+}
+
+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 rc;
+}
+
+module_init(ide_generic_init);
+
+MODULE_LICENSE("GPL");