211 lines
5.9 KiB
C
211 lines
5.9 KiB
C
#ifndef __SPARC64_PCI_H
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#define __SPARC64_PCI_H
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#ifdef __KERNEL__
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#include <linux/dma-mapping.h>
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/* Can be used to override the logic in pci_scan_bus for skipping
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* already-configured bus numbers - to be used for buggy BIOSes
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* or architectures with incomplete PCI setup by the loader.
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*/
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#define pcibios_assign_all_busses() 0
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#define pcibios_scan_all_fns(a, b) 0
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#define PCIBIOS_MIN_IO 0UL
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#define PCIBIOS_MIN_MEM 0UL
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#define PCI_IRQ_NONE 0xffffffff
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#define PCI_CACHE_LINE_BYTES 64
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static inline void pcibios_set_master(struct pci_dev *dev)
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{
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/* No special bus mastering setup handling */
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}
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static inline void pcibios_penalize_isa_irq(int irq, int active)
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{
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/* We don't do dynamic PCI IRQ allocation */
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}
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/* The PCI address space does not equal the physical memory
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* address space. The networking and block device layers use
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* this boolean for bounce buffer decisions.
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*/
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#define PCI_DMA_BUS_IS_PHYS (0)
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static inline void *pci_alloc_consistent(struct pci_dev *pdev, size_t size,
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dma_addr_t *dma_handle)
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{
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return dma_alloc_coherent(&pdev->dev, size, dma_handle, GFP_ATOMIC);
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}
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static inline void pci_free_consistent(struct pci_dev *pdev, size_t size,
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void *vaddr, dma_addr_t dma_handle)
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{
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return dma_free_coherent(&pdev->dev, size, vaddr, dma_handle);
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}
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static inline dma_addr_t pci_map_single(struct pci_dev *pdev, void *ptr,
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size_t size, int direction)
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{
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return dma_map_single(&pdev->dev, ptr, size,
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(enum dma_data_direction) direction);
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}
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static inline void pci_unmap_single(struct pci_dev *pdev, dma_addr_t dma_addr,
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size_t size, int direction)
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{
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dma_unmap_single(&pdev->dev, dma_addr, size,
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(enum dma_data_direction) direction);
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}
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#define pci_map_page(dev, page, off, size, dir) \
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pci_map_single(dev, (page_address(page) + (off)), size, dir)
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#define pci_unmap_page(dev,addr,sz,dir) \
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pci_unmap_single(dev,addr,sz,dir)
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/* pci_unmap_{single,page} is not a nop, thus... */
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#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
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dma_addr_t ADDR_NAME;
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#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
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__u32 LEN_NAME;
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#define pci_unmap_addr(PTR, ADDR_NAME) \
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((PTR)->ADDR_NAME)
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#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
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(((PTR)->ADDR_NAME) = (VAL))
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#define pci_unmap_len(PTR, LEN_NAME) \
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((PTR)->LEN_NAME)
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#define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
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(((PTR)->LEN_NAME) = (VAL))
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static inline int pci_map_sg(struct pci_dev *pdev, struct scatterlist *sg,
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int nents, int direction)
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{
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return dma_map_sg(&pdev->dev, sg, nents,
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(enum dma_data_direction) direction);
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}
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static inline void pci_unmap_sg(struct pci_dev *pdev, struct scatterlist *sg,
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int nents, int direction)
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{
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dma_unmap_sg(&pdev->dev, sg, nents,
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(enum dma_data_direction) direction);
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}
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static inline void pci_dma_sync_single_for_cpu(struct pci_dev *pdev,
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dma_addr_t dma_handle,
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size_t size, int direction)
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{
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dma_sync_single_for_cpu(&pdev->dev, dma_handle, size,
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(enum dma_data_direction) direction);
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}
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static inline void pci_dma_sync_single_for_device(struct pci_dev *pdev,
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dma_addr_t dma_handle,
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size_t size, int direction)
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{
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/* No flushing needed to sync cpu writes to the device. */
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}
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static inline void pci_dma_sync_sg_for_cpu(struct pci_dev *pdev,
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struct scatterlist *sg,
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int nents, int direction)
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{
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dma_sync_sg_for_cpu(&pdev->dev, sg, nents,
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(enum dma_data_direction) direction);
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}
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static inline void pci_dma_sync_sg_for_device(struct pci_dev *pdev,
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struct scatterlist *sg,
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int nelems, int direction)
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{
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/* No flushing needed to sync cpu writes to the device. */
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}
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/* Return whether the given PCI device DMA address mask can
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* be supported properly. For example, if your device can
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* only drive the low 24-bits during PCI bus mastering, then
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* you would pass 0x00ffffff as the mask to this function.
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*/
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extern int pci_dma_supported(struct pci_dev *hwdev, u64 mask);
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/* PCI IOMMU mapping bypass support. */
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/* PCI 64-bit addressing works for all slots on all controller
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* types on sparc64. However, it requires that the device
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* can drive enough of the 64 bits.
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*/
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#define PCI64_REQUIRED_MASK (~(dma64_addr_t)0)
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#define PCI64_ADDR_BASE 0xfffc000000000000UL
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static inline int pci_dma_mapping_error(struct pci_dev *pdev,
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dma_addr_t dma_addr)
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{
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return dma_mapping_error(&pdev->dev, dma_addr);
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}
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#ifdef CONFIG_PCI
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static inline void pci_dma_burst_advice(struct pci_dev *pdev,
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enum pci_dma_burst_strategy *strat,
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unsigned long *strategy_parameter)
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{
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unsigned long cacheline_size;
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u8 byte;
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pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte);
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if (byte == 0)
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cacheline_size = 1024;
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else
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cacheline_size = (int) byte * 4;
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*strat = PCI_DMA_BURST_BOUNDARY;
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*strategy_parameter = cacheline_size;
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}
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#endif
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/* Return the index of the PCI controller for device PDEV. */
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extern int pci_domain_nr(struct pci_bus *bus);
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static inline int pci_proc_domain(struct pci_bus *bus)
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{
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return 1;
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}
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/* Platform support for /proc/bus/pci/X/Y mmap()s. */
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#define HAVE_PCI_MMAP
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#define HAVE_ARCH_PCI_GET_UNMAPPED_AREA
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#define get_pci_unmapped_area get_fb_unmapped_area
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extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
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enum pci_mmap_state mmap_state,
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int write_combine);
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extern void
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pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
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struct resource *res);
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extern void
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pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
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struct pci_bus_region *region);
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extern struct resource *pcibios_select_root(struct pci_dev *, struct resource *);
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static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
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{
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return PCI_IRQ_NONE;
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}
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struct device_node;
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extern struct device_node *pci_device_to_OF_node(struct pci_dev *pdev);
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#define HAVE_ARCH_PCI_RESOURCE_TO_USER
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extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
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const struct resource *rsrc,
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resource_size_t *start, resource_size_t *end);
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#endif /* __KERNEL__ */
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#endif /* __SPARC64_PCI_H */
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