| #ifndef __PPC64_PCI_H |
| #define __PPC64_PCI_H |
| #ifdef __KERNEL__ |
| |
| /* |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| */ |
| |
| #include <linux/types.h> |
| #include <linux/slab.h> |
| #include <linux/string.h> |
| #include <linux/dma-mapping.h> |
| #include <asm/machdep.h> |
| #include <asm/scatterlist.h> |
| #include <asm/io.h> |
| #include <asm/prom.h> |
| |
| #define PCIBIOS_MIN_IO 0x1000 |
| #define PCIBIOS_MIN_MEM 0x10000000 |
| |
| struct pci_dev; |
| |
| #ifdef CONFIG_PPC_ISERIES |
| #define pcibios_scan_all_fns(a, b) 0 |
| #else |
| extern int pcibios_scan_all_fns(struct pci_bus *bus, int devfn); |
| #endif |
| |
| 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) |
| { |
| /* We don't do dynamic PCI IRQ allocation */ |
| } |
| |
| #define HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ |
| static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel) |
| { |
| if (ppc_md.pci_get_legacy_ide_irq) |
| return ppc_md.pci_get_legacy_ide_irq(dev, channel); |
| return channel ? 15 : 14; |
| } |
| |
| #define HAVE_ARCH_PCI_MWI 1 |
| static inline int pcibios_prep_mwi(struct pci_dev *dev) |
| { |
| /* |
| * We would like to avoid touching the cacheline size or MWI bit |
| * but we cant do that with the current pcibios_prep_mwi |
| * interface. pSeries firmware sets the cacheline size (which is not |
| * the cpu cacheline size in all cases) and hardware treats MWI |
| * the same as memory write. So we dont touch the cacheline size |
| * here and allow the generic code to set the MWI bit. |
| */ |
| return 0; |
| } |
| |
| extern unsigned int pcibios_assign_all_busses(void); |
| |
| /* |
| * PCI DMA operations are abstracted for G5 vs. i/pSeries |
| */ |
| struct pci_dma_ops { |
| void * (*pci_alloc_consistent)(struct pci_dev *hwdev, size_t size, |
| dma_addr_t *dma_handle); |
| void (*pci_free_consistent)(struct pci_dev *hwdev, size_t size, |
| void *vaddr, dma_addr_t dma_handle); |
| |
| dma_addr_t (*pci_map_single)(struct pci_dev *hwdev, void *ptr, |
| size_t size, enum dma_data_direction direction); |
| void (*pci_unmap_single)(struct pci_dev *hwdev, dma_addr_t dma_addr, |
| size_t size, enum dma_data_direction direction); |
| int (*pci_map_sg)(struct pci_dev *hwdev, struct scatterlist *sg, |
| int nents, enum dma_data_direction direction); |
| void (*pci_unmap_sg)(struct pci_dev *hwdev, struct scatterlist *sg, |
| int nents, enum dma_data_direction direction); |
| int (*pci_dma_supported)(struct pci_dev *hwdev, u64 mask); |
| int (*pci_dac_dma_supported)(struct pci_dev *hwdev, u64 mask); |
| }; |
| |
| extern struct pci_dma_ops pci_dma_ops; |
| |
| static inline void *pci_alloc_consistent(struct pci_dev *hwdev, size_t size, |
| dma_addr_t *dma_handle) |
| { |
| return pci_dma_ops.pci_alloc_consistent(hwdev, size, dma_handle); |
| } |
| |
| static inline void pci_free_consistent(struct pci_dev *hwdev, size_t size, |
| void *vaddr, dma_addr_t dma_handle) |
| { |
| pci_dma_ops.pci_free_consistent(hwdev, size, vaddr, dma_handle); |
| } |
| |
| static inline dma_addr_t pci_map_single(struct pci_dev *hwdev, void *ptr, |
| size_t size, int direction) |
| { |
| return pci_dma_ops.pci_map_single(hwdev, ptr, size, |
| (enum dma_data_direction)direction); |
| } |
| |
| static inline void pci_unmap_single(struct pci_dev *hwdev, dma_addr_t dma_addr, |
| size_t size, int direction) |
| { |
| pci_dma_ops.pci_unmap_single(hwdev, dma_addr, size, |
| (enum dma_data_direction)direction); |
| } |
| |
| static inline int pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg, |
| int nents, int direction) |
| { |
| return pci_dma_ops.pci_map_sg(hwdev, sg, nents, |
| (enum dma_data_direction)direction); |
| } |
| |
| static inline void pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sg, |
| int nents, int direction) |
| { |
| pci_dma_ops.pci_unmap_sg(hwdev, sg, nents, |
| (enum dma_data_direction)direction); |
| } |
| |
| static inline void pci_dma_sync_single_for_cpu(struct pci_dev *hwdev, |
| dma_addr_t dma_handle, |
| size_t size, int direction) |
| { |
| BUG_ON(direction == PCI_DMA_NONE); |
| /* nothing to do */ |
| } |
| |
| static inline void pci_dma_sync_single_for_device(struct pci_dev *hwdev, |
| dma_addr_t dma_handle, |
| size_t size, int direction) |
| { |
| BUG_ON(direction == PCI_DMA_NONE); |
| /* nothing to do */ |
| } |
| |
| static inline void pci_dma_sync_sg_for_cpu(struct pci_dev *hwdev, |
| struct scatterlist *sg, |
| int nelems, int direction) |
| { |
| BUG_ON(direction == PCI_DMA_NONE); |
| /* nothing to do */ |
| } |
| |
| static inline void pci_dma_sync_sg_for_device(struct pci_dev *hwdev, |
| struct scatterlist *sg, |
| int nelems, int direction) |
| { |
| BUG_ON(direction == PCI_DMA_NONE); |
| /* nothing to do */ |
| } |
| |
| /* Return whether the given PCI device DMA address mask can |
| * be supported properly. For example, if your device can |
| * only drive the low 24-bits during PCI bus mastering, then |
| * you would pass 0x00ffffff as the mask to this function. |
| * We default to supporting only 32 bits DMA unless we have |
| * an explicit override of this function in pci_dma_ops for |
| * the platform |
| */ |
| static inline int pci_dma_supported(struct pci_dev *hwdev, u64 mask) |
| { |
| if (pci_dma_ops.pci_dma_supported) |
| return pci_dma_ops.pci_dma_supported(hwdev, mask); |
| return (mask < 0x100000000ull); |
| } |
| |
| /* For DAC DMA, we currently don't support it by default, but |
| * we let the platform override this |
| */ |
| static inline int pci_dac_dma_supported(struct pci_dev *hwdev,u64 mask) |
| { |
| if (pci_dma_ops.pci_dac_dma_supported) |
| return pci_dma_ops.pci_dac_dma_supported(hwdev, mask); |
| return 0; |
| } |
| |
| static inline int pci_dma_mapping_error(dma_addr_t dma_addr) |
| { |
| return dma_mapping_error(dma_addr); |
| } |
| |
| extern int pci_domain_nr(struct pci_bus *bus); |
| |
| /* Set the name of the bus as it appears in /proc/bus/pci */ |
| extern int pci_name_bus(char *name, struct pci_bus *bus); |
| |
| struct vm_area_struct; |
| /* Map a range of PCI memory or I/O space for a device into user space */ |
| int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma, |
| enum pci_mmap_state mmap_state, int write_combine); |
| |
| /* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */ |
| #define HAVE_PCI_MMAP 1 |
| |
| #define pci_map_page(dev, page, off, size, dir) \ |
| pci_map_single(dev, (page_address(page) + (off)), size, dir) |
| #define pci_unmap_page(dev,addr,sz,dir) pci_unmap_single(dev,addr,sz,dir) |
| |
| /* 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)) |
| |
| /* The PCI address space does 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) |
| |
| extern void |
| pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, |
| struct resource *res); |
| |
| extern int |
| unmap_bus_range(struct pci_bus *bus); |
| |
| extern int |
| remap_bus_range(struct pci_bus *bus); |
| |
| extern void |
| pcibios_fixup_device_resources(struct pci_dev *dev, struct pci_bus *bus); |
| |
| extern struct pci_controller *init_phb_dynamic(struct device_node *dn); |
| |
| extern int pci_read_irq_line(struct pci_dev *dev); |
| |
| extern void pcibios_add_platform_entries(struct pci_dev *dev); |
| |
| #endif /* __KERNEL__ */ |
| |
| #endif /* __PPC64_PCI_H */ |