diff options
Diffstat (limited to 'arch/alpha/include/asm/pci.h')
| -rw-r--r-- | arch/alpha/include/asm/pci.h | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/arch/alpha/include/asm/pci.h b/arch/alpha/include/asm/pci.h new file mode 100644 index 00000000..28d0497f --- /dev/null +++ b/arch/alpha/include/asm/pci.h @@ -0,0 +1,143 @@ +#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> + +/* + * 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); + +extern inline void pcibios_penalize_isa_irq(int irq, int active) +{ + /* We don't do dynamic PCI IRQ allocation */ +} + +/* 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; +} + +extern void pcibios_resource_to_bus(struct pci_dev *, struct pci_bus_region *, + struct resource *); + +extern void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, + struct pci_bus_region *region); + +#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 */ |