diff options
Diffstat (limited to 'arch/sh/drivers/pci/pci.c')
-rw-r--r-- | arch/sh/drivers/pci/pci.c | 48 |
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); } |