/* pci.h: FR-V specific PCI declarations * * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * - Derived from include/asm-m68k/pci.h * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #ifndef ASM_PCI_H #define ASM_PCI_H #include <linux/mm.h> #include <asm/scatterlist.h> #include <asm-generic/pci-dma-compat.h> #include <asm-generic/pci.h> struct pci_dev; #define pcibios_assign_all_busses() 0 extern void pcibios_set_master(struct pci_dev *dev); extern void pcibios_penalize_isa_irq(int irq); #ifdef CONFIG_MMU extern void *consistent_alloc(gfp_t gfp, size_t size, dma_addr_t *dma_handle); extern void consistent_free(void *vaddr); extern void consistent_sync(void *vaddr, size_t size, int direction); extern void consistent_sync_page(struct page *page, unsigned long offset, size_t size, int direction); #endif extern void *pci_alloc_consistent(struct pci_dev *hwdev, size_t size, dma_addr_t *dma_handle); extern void pci_free_consistent(struct pci_dev *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle); /* Return the index of the PCI controller for device PDEV. */ #define pci_controller_num(PDEV) (0) /* The PCI address space does equal the physical memory * address space. The networking and block device layers use * this boolean for bounce buffer decisions. */ #define PCI_DMA_BUS_IS_PHYS (1) /* pci_unmap_{page,single} is a nop so... */ #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) #define pci_unmap_addr(PTR, ADDR_NAME) (0) #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0) #define pci_unmap_len(PTR, LEN_NAME) (0) #define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0) #ifdef CONFIG_PCI static inline void pci_dma_burst_advice(struct pci_dev *pdev, enum pci_dma_burst_strategy *strat, unsigned long *strategy_parameter) { *strat = PCI_DMA_BURST_INFINITY; *strategy_parameter = ~0UL; } #endif /* * These are pretty much arbitary with the CoMEM implementation. * We have the whole address space to ourselves. */ #define PCIBIOS_MIN_IO 0x100 #define PCIBIOS_MIN_MEM 0x00010000 /* Make physical memory consistent for a single * streaming mode DMA translation after a transfer. * * If you perform a pci_map_single() but wish to interrogate the * buffer using the cpu, yet do not wish to teardown the PCI dma * mapping, you must call this function before doing so. At the * next point you give the PCI dma address back to the card, the * device again owns the buffer. */ static inline void pci_dma_sync_single(struct pci_dev *hwdev, dma_addr_t dma_handle, size_t size, int direction) { if (direction == PCI_DMA_NONE) BUG(); frv_cache_wback_inv((unsigned long)bus_to_virt(dma_handle), (unsigned long)bus_to_virt(dma_handle) + size); } /* Make physical memory consistent for a set of streaming * mode DMA translations after a transfer. * * The same as pci_dma_sync_single but for a scatter-gather list, * same rules and usage. */ static inline void pci_dma_sync_sg(struct pci_dev *hwdev, struct scatterlist *sg, int nelems, int direction) { int i; if (direction == PCI_DMA_NONE) BUG(); for (i = 0; i < nelems; i++) frv_cache_wback_inv(sg_dma_address(&sg[i]), sg_dma_address(&sg[i])+sg_dma_len(&sg[i])); } #endif