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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/alpha/include/asm/pci.h
Initial import
Diffstat (limited to 'arch/alpha/include/asm/pci.h')
-rw-r--r--arch/alpha/include/asm/pci.h133
1 files changed, 133 insertions, 0 deletions
diff --git a/arch/alpha/include/asm/pci.h b/arch/alpha/include/asm/pci.h
new file mode 100644
index 000000000..f7f680f74
--- /dev/null
+++ b/arch/alpha/include/asm/pci.h
@@ -0,0 +1,133 @@
+#ifndef __ALPHA_PCI_H
+#define __ALPHA_PCI_H
+
+#ifdef __KERNEL__
+
+#include <linux/spinlock.h>
+#include <linux/dma-mapping.h>
+#include <asm/scatterlist.h>
+#include <asm/machvec.h>
+#include <asm-generic/pci-bridge.h>
+
+/*
+ * The following structure is used to manage multiple PCI busses.
+ */
+
+struct pci_dev;
+struct pci_bus;
+struct resource;
+struct pci_iommu_arena;
+struct page;
+
+/* A controller. Used to manage multiple PCI busses. */
+
+struct pci_controller {
+ struct pci_controller *next;
+ struct pci_bus *bus;
+ struct resource *io_space;
+ struct resource *mem_space;
+
+ /* The following are for reporting to userland. The invariant is
+ that if we report a BWX-capable dense memory, we do not report
+ a sparse memory at all, even if it exists. */
+ unsigned long sparse_mem_base;
+ unsigned long dense_mem_base;
+ unsigned long sparse_io_base;
+ unsigned long dense_io_base;
+
+ /* This one's for the kernel only. It's in KSEG somewhere. */
+ unsigned long config_space_base;
+
+ unsigned int index;
+ /* For compatibility with current (as of July 2003) pciutils
+ and XFree86. Eventually will be removed. */
+ unsigned int need_domain_info;
+
+ struct pci_iommu_arena *sg_pci;
+ struct pci_iommu_arena *sg_isa;
+
+ void *sysdata;
+};
+
+/* Override the logic in pci_scan_bus for skipping already-configured
+ bus numbers. */
+
+#define pcibios_assign_all_busses() 1
+
+#define PCIBIOS_MIN_IO alpha_mv.min_io_address
+#define PCIBIOS_MIN_MEM alpha_mv.min_mem_address
+
+extern void pcibios_set_master(struct pci_dev *dev);
+
+/* IOMMU controls. */
+
+/* The PCI address space does not equal the physical memory address space.
+ The networking and block device layers use this boolean for bounce buffer
+ decisions. */
+#define PCI_DMA_BUS_IS_PHYS 0
+
+#ifdef CONFIG_PCI
+
+/* implement the pci_ DMA API in terms of the generic device dma_ one */
+#include <asm-generic/pci-dma-compat.h>
+
+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_BOUNDARY;
+ *strategy_parameter = cacheline_size;
+}
+#endif
+
+/* TODO: integrate with include/asm-generic/pci.h ? */
+static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
+{
+ return channel ? 15 : 14;
+}
+
+#define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index
+
+static inline int pci_proc_domain(struct pci_bus *bus)
+{
+ struct pci_controller *hose = bus->sysdata;
+ return hose->need_domain_info;
+}
+
+#endif /* __KERNEL__ */
+
+/* Values for the `which' argument to sys_pciconfig_iobase. */
+#define IOBASE_HOSE 0
+#define IOBASE_SPARSE_MEM 1
+#define IOBASE_DENSE_MEM 2
+#define IOBASE_SPARSE_IO 3
+#define IOBASE_DENSE_IO 4
+#define IOBASE_ROOT_BUS 5
+#define IOBASE_FROM_HOSE 0x10000
+
+extern struct pci_dev *isa_bridge;
+
+extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val,
+ size_t count);
+extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val,
+ size_t count);
+extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
+ struct vm_area_struct *vma,
+ enum pci_mmap_state mmap_state);
+extern void pci_adjust_legacy_attr(struct pci_bus *bus,
+ enum pci_mmap_state mmap_type);
+#define HAVE_PCI_LEGACY 1
+
+extern int pci_create_resource_files(struct pci_dev *dev);
+extern void pci_remove_resource_files(struct pci_dev *dev);
+
+#endif /* __ALPHA_PCI_H */