2 * linux/arch/alpha/kernel/pci-noop.c
4 * Stub PCI interfaces for Jensen-specific kernels.
8 #include <linux/init.h>
9 #include <linux/bootmem.h>
10 #include <linux/errno.h>
11 #include <linux/sched.h>
17 * The PCI controller list.
20 struct pci_controller *hose_head, **hose_tail = &hose_head;
21 struct pci_controller *pci_isa_hose;
24 struct pci_controller * __init
25 alloc_pci_controller(void)
27 struct pci_controller *hose;
29 hose = alloc_bootmem(sizeof(*hose));
32 hose_tail = &hose->next;
37 struct resource * __init
42 res = alloc_bootmem(sizeof(*res));
48 sys_pciconfig_iobase(long which, unsigned long bus, unsigned long dfn)
50 struct pci_controller *hose;
52 /* from hose or from bus.devfn */
53 if (which & IOBASE_FROM_HOSE) {
54 for (hose = hose_head; hose; hose = hose->next)
55 if (hose->index == bus)
60 /* Special hook for ISA access. */
61 if (bus == 0 && dfn == 0)
67 switch (which & ~IOBASE_FROM_HOSE) {
70 case IOBASE_SPARSE_MEM:
71 return hose->sparse_mem_base;
72 case IOBASE_DENSE_MEM:
73 return hose->dense_mem_base;
74 case IOBASE_SPARSE_IO:
75 return hose->sparse_io_base;
77 return hose->dense_io_base;
79 return hose->bus->number;
86 sys_pciconfig_read(unsigned long bus, unsigned long dfn,
87 unsigned long off, unsigned long len, void *buf)
89 if (!capable(CAP_SYS_ADMIN))
96 sys_pciconfig_write(unsigned long bus, unsigned long dfn,
97 unsigned long off, unsigned long len, void *buf)
99 if (!capable(CAP_SYS_ADMIN))
104 /* stubs for the routines in pci_iommu.c */
106 pci_alloc_consistent(struct pci_dev *pdev, size_t size, dma_addr_t *dma_addrp)
111 pci_free_consistent(struct pci_dev *pdev, size_t size, void *cpu_addr,
116 pci_map_single(struct pci_dev *pdev, void *cpu_addr, size_t size,
119 return (dma_addr_t) 0;
122 pci_unmap_single(struct pci_dev *pdev, dma_addr_t dma_addr, size_t size,
127 pci_map_sg(struct pci_dev *pdev, struct scatterlist *sg, int nents,
133 pci_unmap_sg(struct pci_dev *pdev, struct scatterlist *sg, int nents,
138 pci_dma_supported(struct pci_dev *hwdev, dma_addr_t mask)