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