/*
* generic/default IDE host driver
*
- * Copyright (C) 2004, 2008 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.
*/
-/*
- * For special cases new interfaces may be added using sysfs, i.e.
- *
- * echo -n "0x168:0x36e:10" > /sys/class/ide_generic/add
- *
- * will add an interface using I/O ports 0x168-0x16f/0x36e and IRQ 10.
- */
-
#include <linux/kernel.h>
#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 */
+/* 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 = 0x03;
+static int probe_mask;
module_param(probe_mask, int, 0);
MODULE_PARM_DESC(probe_mask, "probe mask for legacy ISA IDE ports");
-static ssize_t store_add(struct class *cls, const char *buf, size_t n)
-{
- unsigned int base, ctl;
- int irq, rc;
- hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
-
- if (sscanf(buf, "%x:%x:%d", &base, &ctl, &irq) != 3)
- return -EINVAL;
-
- memset(&hw, 0, sizeof(hw));
- ide_std_init_ports(&hw, base, ctl);
- hw.irq = irq;
- hw.chipset = ide_generic;
-
- rc = ide_host_add(NULL, hws, NULL);
- if (rc)
- return rc;
-
- return n;
-};
-
-static struct class_attribute ide_generic_class_attrs[] = {
- __ATTR(add, S_IWUSR, NULL, store_add),
- __ATTR_NULL
+static const struct ide_port_info ide_generic_port_info = {
+ .host_flags = IDE_HFLAG_NO_DMA,
+ .chipset = ide_generic,
};
-static void ide_generic_class_release(struct class *cls)
-{
- kfree(cls);
-}
-
-static int __init ide_generic_sysfs_init(void)
-{
- struct class *cls;
- int rc;
-
- cls = kzalloc(sizeof(*cls), GFP_KERNEL);
- if (!cls)
- return -ENOMEM;
-
- cls->name = DRV_NAME;
- cls->owner = THIS_MODULE;
- cls->class_release = ide_generic_class_release;
- cls->class_attrs = ide_generic_class_attrs;
-
- rc = class_register(cls);
- if (rc) {
- kfree(cls);
- return rc;
- }
-
- return 0;
-}
-
-#if defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_MAPPI2) \
- || defined(CONFIG_PLAT_OPSPUT)
+#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 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)
{
- hw_regs_t hw[MAX_HWIFS], *hws[MAX_HWIFS];
- struct ide_host *host;
+ struct ide_hw hw, *hws[] = { &hw };
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);
- memset(hws, 0, sizeof(hw_regs_t *) * MAX_HWIFS);
+ 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];
- 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 "
"not free.\n",
DRV_NAME, io_addr, io_addr + 7);
+ rc = -EBUSY;
continue;
}
"not free.\n",
DRV_NAME, io_addr + 0x206);
release_region(io_addr, 8);
+ rc = -EBUSY;
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;
-
- hws[i] = &hw[i];
+ rc = ide_host_add(&ide_generic_port_info, hws, 1, 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;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff