include/asm-mips/pci.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  */
   6 #ifndef _ASM_PCI_H
   7 #define _ASM_PCI_H
   8
   9 #include <linux/config.h>
  10 #include <linux/mm.h>
  11
  12 #ifdef __KERNEL__
  13
  14 /* Can be used to override the logic in pci_scan_bus for skipping
  15    already-configured bus numbers - to be used for buggy BIOSes
  16    or architectures with incomplete PCI setup by the loader */
  17
  18 extern unsigned int pcibios_assign_all_busses(void);
  19
  20 #define pcibios_scan_all_fns(a, b)      0
  21
  22 extern unsigned long PCIBIOS_MIN_IO;
  23 extern unsigned long PCIBIOS_MIN_MEM;
  24
  25 #define PCIBIOS_MIN_CARDBUS_IO  0x4000
  26
  27 extern void pcibios_set_master(struct pci_dev *dev);
  28
  29 static inline void pcibios_penalize_isa_irq(int irq)
  30 {
  31         /* We don't do dynamic PCI IRQ allocation */
  32 }
  33
  34 /*
  35  * Dynamic DMA mapping stuff.
  36  * MIPS has everything mapped statically.
  37  */
  38
  39 #include <linux/types.h>
  40 #include <linux/slab.h>
  41 #include <asm/scatterlist.h>
  42 #include <linux/string.h>
  43 #include <asm/io.h>
  44
  45 struct pci_dev;
  46
  47 /*
  48  * The PCI address space does equal the physical memory address space.  The
  49  * networking and block device layers use this boolean for bounce buffer
  50  * decisions.  This is set if any hose does not have an IOMMU.
  51  */
  52 extern unsigned int PCI_DMA_BUS_IS_PHYS;
  53
  54 #ifdef CONFIG_MAPPED_DMA_IO
  55
  56 /* pci_unmap_{single,page} is not a nop, thus... */
  57 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)       dma_addr_t ADDR_NAME;
  58 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)         __u32 LEN_NAME;
  59 #define pci_unmap_addr(PTR, ADDR_NAME)          ((PTR)->ADDR_NAME)
  60 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) (((PTR)->ADDR_NAME) = (VAL))
  61 #define pci_unmap_len(PTR, LEN_NAME)            ((PTR)->LEN_NAME)
  62 #define pci_unmap_len_set(PTR, LEN_NAME, VAL)   (((PTR)->LEN_NAME) = (VAL))
  63
  64 #else /* CONFIG_MAPPED_DMA_IO  */
  65
  66 /* pci_unmap_{page,single} is a nop so... */
  67 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
  68 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
  69 #define pci_unmap_addr(PTR, ADDR_NAME)          (0)
  70 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
  71 #define pci_unmap_len(PTR, LEN_NAME)            (0)
  72 #define pci_unmap_len_set(PTR, LEN_NAME, VAL)   do { } while (0)
  73
  74 #endif /* CONFIG_MAPPED_DMA_IO  */
  75
  76 /* This is always fine. */
  77 #define pci_dac_dma_supported(pci_dev, mask)    (1)
  78
  79 extern dma64_addr_t pci_dac_page_to_dma(struct pci_dev *pdev,
  80         struct page *page, unsigned long offset, int direction);
  81 extern struct page *pci_dac_dma_to_page(struct pci_dev *pdev,
  82         dma64_addr_t dma_addr);
  83 extern unsigned long pci_dac_dma_to_offset(struct pci_dev *pdev,
  84         dma64_addr_t dma_addr);
  85 extern void pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev,
  86         dma64_addr_t dma_addr, size_t len, int direction);
  87 extern void pci_dac_dma_sync_single_for_device(struct pci_dev *pdev,
  88         dma64_addr_t dma_addr, size_t len, int direction);
  89
  90 extern void pcibios_resource_to_bus(struct pci_dev *dev,
  91         struct pci_bus_region *region, struct resource *res);
  92
  93 #endif /* __KERNEL__ */
  94
  95 /* implement the pci_ DMA API in terms of the generic device dma_ one */
  96 #include <asm-generic/pci-dma-compat.h>
  97
  98 static inline void pcibios_add_platform_entries(struct pci_dev *dev)
  99 {
 100 }
 101
 102 #endif /* _ASM_PCI_H */