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;
53 /* from hose or from bus.devfn */
54 if (which & IOBASE_FROM_HOSE) {
55 for (hose = hose_head; hose; hose = hose->next)
56 if (hose->index == bus)
61 /* Special hook for ISA access. */
62 if (bus == 0 && dfn == 0)
68 switch (which & ~IOBASE_FROM_HOSE) {
71 case IOBASE_SPARSE_MEM:
72 return hose->sparse_mem_base;
73 case IOBASE_DENSE_MEM:
74 return hose->dense_mem_base;
75 case IOBASE_SPARSE_IO:
76 return hose->sparse_io_base;
78 return hose->dense_io_base;
80 return hose->bus->number;
87 sys_pciconfig_read(unsigned long bus, unsigned long dfn,
88 unsigned long off, unsigned long len, void *buf)
90 if (!capable(CAP_SYS_ADMIN))
97 sys_pciconfig_write(unsigned long bus, unsigned long dfn,
98 unsigned long off, unsigned long len, void *buf)
100 if (!capable(CAP_SYS_ADMIN))
105 /* stubs for the routines in pci_iommu.c */
107 pci_alloc_consistent(struct pci_dev *pdev, size_t size, dma_addr_t *dma_addrp)
112 pci_free_consistent(struct pci_dev *pdev, size_t size, void *cpu_addr,
117 pci_map_single(struct pci_dev *pdev, void *cpu_addr, size_t size,
120 return (dma_addr_t)0;
123 pci_unmap_single(struct pci_dev *pdev, dma_addr_t dma_addr, size_t size,
128 pci_map_sg(struct pci_dev *pdev, struct scatterlist *sg, int nents,
134 pci_unmap_sg(struct pci_dev *pdev, struct scatterlist *sg, int nents,
139 pci_dma_supported(struct pci_dev *hwdev, dma_addr_t mask)