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path: root/arch/sh/drivers/pci/pci.c
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Diffstat (limited to 'arch/sh/drivers/pci/pci.c')
-rw-r--r--arch/sh/drivers/pci/pci.c48
1 files changed, 9 insertions, 39 deletions
diff --git a/arch/sh/drivers/pci/pci.c b/arch/sh/drivers/pci/pci.c
index 953af13..a09c77d 100644
--- a/arch/sh/drivers/pci/pci.c
+++ b/arch/sh/drivers/pci/pci.c
@@ -19,6 +19,7 @@
#include <linux/dma-debug.h>
#include <linux/io.h>
#include <linux/mutex.h>
+#include <linux/spinlock.h>
unsigned long PCIBIOS_MIN_IO = 0x0000;
unsigned long PCIBIOS_MIN_MEM = 0;
@@ -56,6 +57,11 @@ static void __devinit pcibios_scanbus(struct pci_channel *hose)
}
}
+/*
+ * This interrupt-safe spinlock protects all accesses to PCI
+ * configuration space.
+ */
+DEFINE_RAW_SPINLOCK(pci_config_lock);
static DEFINE_MUTEX(pci_scan_mutex);
int __devinit register_pci_controller(struct pci_channel *hose)
@@ -139,8 +145,6 @@ static void pcibios_fixup_device_resources(struct pci_dev *dev,
for (i = 0; i < PCI_NUM_RESOURCES; i++) {
if (!dev->resource[i].start)
continue;
- if (dev->resource[i].flags & IORESOURCE_PCI_FIXED)
- continue;
if (dev->resource[i].flags & IORESOURCE_IO)
offset = hose->io_offset;
else if (dev->resource[i].flags & IORESOURCE_MEM)
@@ -235,40 +239,7 @@ void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
int pcibios_enable_device(struct pci_dev *dev, int mask)
{
- u16 cmd, old_cmd;
- int idx;
- struct resource *r;
-
- pci_read_config_word(dev, PCI_COMMAND, &cmd);
- old_cmd = cmd;
- for (idx=0; idx < PCI_NUM_RESOURCES; idx++) {
- /* Only set up the requested stuff */
- if (!(mask & (1<<idx)))
- continue;
-
- r = &dev->resource[idx];
- if (!(r->flags & (IORESOURCE_IO | IORESOURCE_MEM)))
- continue;
- if ((idx == PCI_ROM_RESOURCE) &&
- (!(r->flags & IORESOURCE_ROM_ENABLE)))
- continue;
- if (!r->start && r->end) {
- printk(KERN_ERR "PCI: Device %s not available "
- "because of resource collisions\n",
- pci_name(dev));
- return -EINVAL;
- }
- if (r->flags & IORESOURCE_IO)
- cmd |= PCI_COMMAND_IO;
- if (r->flags & IORESOURCE_MEM)
- cmd |= PCI_COMMAND_MEMORY;
- }
- if (cmd != old_cmd) {
- printk("PCI: Enabling device %s (%04x -> %04x)\n",
- pci_name(dev), old_cmd, cmd);
- pci_write_config_word(dev, PCI_COMMAND, cmd);
- }
- return 0;
+ return pci_enable_resources(dev, mask);
}
/*
@@ -297,7 +268,7 @@ void __init pcibios_update_irq(struct pci_dev *dev, int irq)
pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
}
-char * __devinit pcibios_setup(char *str)
+char * __devinit __weak pcibios_setup(char *str)
{
return str;
}
@@ -411,14 +382,13 @@ static void __iomem *ioport_map_pci(struct pci_dev *dev,
struct pci_channel *chan = dev->sysdata;
if (unlikely(!chan->io_map_base)) {
- chan->io_map_base = generic_io_base;
+ chan->io_map_base = sh_io_port_base;
if (pci_domains_supported)
panic("To avoid data corruption io_map_base MUST be "
"set with multiple PCI domains.");
}
-
return (void __iomem *)(chan->io_map_base + port);
}