1 /* 2 * linux/include/asm-xtensa/pci.h 3 * 4 * This file is subject to the terms and conditions of the GNU General Public 5 * License. See the file "COPYING" in the main directory of this archive 6 * for more details. 7 * 8 * Copyright (C) 2001 - 2005 Tensilica Inc. 9 */ 10 11 #ifndef _XTENSA_PCI_H 12 #define _XTENSA_PCI_H 13 14 #ifdef __KERNEL__ 15 16 /* Can be used to override the logic in pci_scan_bus for skipping 17 * already-configured bus numbers - to be used for buggy BIOSes 18 * or architectures with incomplete PCI setup by the loader 19 */ 20 21 #define pcibios_assign_all_busses() 0 22 23 extern struct pci_controller* pcibios_alloc_controller(void); 24 25 static inline void pcibios_set_master(struct pci_dev *dev) 26 { 27 /* No special bus mastering setup handling */ 28 } 29 30 static inline void pcibios_penalize_isa_irq(int irq) 31 { 32 /* We don't do dynamic PCI IRQ allocation */ 33 } 34 35 /* Assume some values. (We should revise them, if necessary) */ 36 37 #define PCIBIOS_MIN_IO 0x2000 38 #define PCIBIOS_MIN_MEM 0x10000000 39 40 /* Dynamic DMA mapping stuff. 41 * Xtensa has everything mapped statically like x86. 42 */ 43 44 #include <linux/types.h> 45 #include <linux/slab.h> 46 #include <asm/scatterlist.h> 47 #include <linux/string.h> 48 #include <asm/io.h> 49 50 struct pci_dev; 51 52 /* The PCI address space does equal the physical memory address space. 53 * The networking and block device layers use this boolean for bounce buffer 54 * decisions. 55 */ 56 57 #define PCI_DMA_BUS_IS_PHYS (1) 58 59 /* pci_unmap_{page,single} is a no-op, so */ 60 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) 61 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) 62 #define pci_unmap_addr(PTR, ADDR_NAME) (0) 63 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0) 64 #define pci_ubnmap_len(PTR, LEN_NAME) (0) 65 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0) 66 67 /* Map a range of PCI memory or I/O space for a device into user space */ 68 int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma, 69 enum pci_mmap_state mmap_state, int write_combine); 70 71 /* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */ 72 #define HAVE_PCI_MMAP 1 73 74 #endif /* __KERNEL__ */ 75 76 /* Implement the pci_ DMA API in terms of the generic device dma_ one */ 77 #include <asm-generic/pci-dma-compat.h> 78 79 /* Generic PCI */ 80 #include <asm-generic/pci.h> 81 82 #endif /* _XTENSA_PCI_H */ 83