aboutsummaryrefslogtreecommitdiff
path: root/arch/ia64/include/asm/pci.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/ia64/include/asm/pci.h')
-rw-r--r--arch/ia64/include/asm/pci.h167
1 files changed, 167 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/pci.h b/arch/ia64/include/asm/pci.h
new file mode 100644
index 00000000000..0149097b736
--- /dev/null
+++ b/arch/ia64/include/asm/pci.h
@@ -0,0 +1,167 @@
+#ifndef _ASM_IA64_PCI_H
+#define _ASM_IA64_PCI_H
+
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/string.h>
+#include <linux/types.h>
+
+#include <asm/io.h>
+#include <asm/scatterlist.h>
+#include <asm/hw_irq.h>
+
+/*
+ * Can be used to override the logic in pci_scan_bus for skipping already-configured bus
+ * numbers - to be used for buggy BIOSes or architectures with incomplete PCI setup by the
+ * loader.
+ */
+#define pcibios_assign_all_busses() 0
+#define pcibios_scan_all_fns(a, b) 0
+
+#define PCIBIOS_MIN_IO 0x1000
+#define PCIBIOS_MIN_MEM 0x10000000
+
+void pcibios_config_init(void);
+
+struct pci_dev;
+
+/*
+ * PCI_DMA_BUS_IS_PHYS should be set to 1 if there is _necessarily_ a direct
+ * correspondence between device bus addresses and CPU physical addresses.
+ * Platforms with a hardware I/O MMU _must_ turn this off to suppress the
+ * bounce buffer handling code in the block and network device layers.
+ * Platforms with separate bus address spaces _must_ turn this off and provide
+ * a device DMA mapping implementation that takes care of the necessary
+ * address translation.
+ *
+ * For now, the ia64 platforms which may have separate/multiple bus address
+ * spaces all have I/O MMUs which support the merging of physically
+ * discontiguous buffers, so we can use that as the sole factor to determine
+ * the setting of PCI_DMA_BUS_IS_PHYS.
+ */
+extern unsigned long ia64_max_iommu_merge_mask;
+#define PCI_DMA_BUS_IS_PHYS (ia64_max_iommu_merge_mask == ~0UL)
+
+static inline void
+pcibios_set_master (struct pci_dev *dev)
+{
+ /* No special bus mastering setup handling */
+}
+
+static inline void
+pcibios_penalize_isa_irq (int irq, int active)
+{
+ /* We don't do dynamic PCI IRQ allocation */
+}
+
+#include <asm-generic/pci-dma-compat.h>
+
+/* pci_unmap_{single,page} is not a nop, thus... */
+#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
+ dma_addr_t ADDR_NAME;
+#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
+ __u32 LEN_NAME;
+#define pci_unmap_addr(PTR, ADDR_NAME) \
+ ((PTR)->ADDR_NAME)
+#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
+ (((PTR)->ADDR_NAME) = (VAL))
+#define pci_unmap_len(PTR, LEN_NAME) \
+ ((PTR)->LEN_NAME)
+#define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
+ (((PTR)->LEN_NAME) = (VAL))
+
+#ifdef CONFIG_PCI
+static inline void pci_dma_burst_advice(struct pci_dev *pdev,
+ enum pci_dma_burst_strategy *strat,
+ unsigned long *strategy_parameter)
+{
+ unsigned long cacheline_size;
+ u8 byte;
+
+ pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte);
+ if (byte == 0)
+ cacheline_size = 1024;
+ else
+ cacheline_size = (int) byte * 4;
+
+ *strat = PCI_DMA_BURST_MULTIPLE;
+ *strategy_parameter = cacheline_size;
+}
+#endif
+
+#define HAVE_PCI_MMAP
+extern int pci_mmap_page_range (struct pci_dev *dev, struct vm_area_struct *vma,
+ enum pci_mmap_state mmap_state, int write_combine);
+#define HAVE_PCI_LEGACY
+extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
+ struct vm_area_struct *vma);
+extern ssize_t pci_read_legacy_io(struct kobject *kobj,
+ struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count);
+extern ssize_t pci_write_legacy_io(struct kobject *kobj,
+ struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count);
+extern int pci_mmap_legacy_mem(struct kobject *kobj,
+ struct bin_attribute *attr,
+ struct vm_area_struct *vma);
+
+#define pci_get_legacy_mem platform_pci_get_legacy_mem
+#define pci_legacy_read platform_pci_legacy_read
+#define pci_legacy_write platform_pci_legacy_write
+
+struct pci_window {
+ struct resource resource;
+ u64 offset;
+};
+
+struct pci_controller {
+ void *acpi_handle;
+ void *iommu;
+ int segment;
+ int node; /* nearest node with memory or -1 for global allocation */
+
+ unsigned int windows;
+ struct pci_window *window;
+
+ void *platform_data;
+};
+
+#define PCI_CONTROLLER(busdev) ((struct pci_controller *) busdev->sysdata)
+#define pci_domain_nr(busdev) (PCI_CONTROLLER(busdev)->segment)
+
+extern struct pci_ops pci_root_ops;
+
+static inline int pci_proc_domain(struct pci_bus *bus)
+{
+ return (pci_domain_nr(bus) != 0);
+}
+
+extern void pcibios_resource_to_bus(struct pci_dev *dev,
+ struct pci_bus_region *region, struct resource *res);
+
+extern void pcibios_bus_to_resource(struct pci_dev *dev,
+ struct resource *res, struct pci_bus_region *region);
+
+static inline struct resource *
+pcibios_select_root(struct pci_dev *pdev, struct resource *res)
+{
+ struct resource *root = NULL;
+
+ if (res->flags & IORESOURCE_IO)
+ root = &ioport_resource;
+ if (res->flags & IORESOURCE_MEM)
+ root = &iomem_resource;
+
+ return root;
+}
+
+#define pcibios_scan_all_fns(a, b) 0
+
+#define HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
+static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
+{
+ return channel ? isa_irq_to_vector(15) : isa_irq_to_vector(14);
+}
+
+#endif /* _ASM_IA64_PCI_H */