119 строки
3.5 KiB
C
119 строки
3.5 KiB
C
/* 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
|