120 lines
3.9 KiB
C
120 lines
3.9 KiB
C
/*
|
|
* include/asm-v850/pci.h -- PCI support
|
|
*
|
|
* Copyright (C) 2001,02,05 NEC Corporation
|
|
* Copyright (C) 2001,02,05 Miles Bader <miles@gnu.org>
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General
|
|
* Public License. See the file COPYING in the main directory of this
|
|
* archive for more details.
|
|
*
|
|
* Written by Miles Bader <miles@gnu.org>
|
|
*/
|
|
|
|
#ifndef __V850_PCI_H__
|
|
#define __V850_PCI_H__
|
|
|
|
/* Get any platform-dependent definitions. */
|
|
#include <asm/machdep.h>
|
|
|
|
#define pcibios_scan_all_fns(a, b) 0
|
|
|
|
/* Generic declarations. */
|
|
|
|
struct scatterlist;
|
|
|
|
extern void pcibios_set_master (struct pci_dev *dev);
|
|
|
|
/* `Grant' to PDEV the memory block at CPU_ADDR, for doing DMA. The
|
|
32-bit PCI bus mastering address to use is returned. the device owns
|
|
this memory until either pci_unmap_single or pci_dma_sync_single_for_cpu is
|
|
performed. */
|
|
extern dma_addr_t
|
|
pci_map_single (struct pci_dev *pdev, void *cpu_addr, size_t size, int dir);
|
|
|
|
/* Return to the CPU the PCI DMA memory block previously `granted' to
|
|
PDEV, at DMA_ADDR. */
|
|
extern void
|
|
pci_unmap_single (struct pci_dev *pdev, dma_addr_t dma_addr, size_t size,
|
|
int dir);
|
|
|
|
/* 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, you must first
|
|
perform a pci_dma_sync_for_device, and then the device again owns
|
|
the buffer. */
|
|
extern void
|
|
pci_dma_sync_single_for_cpu (struct pci_dev *dev, dma_addr_t dma_addr,
|
|
size_t size, int dir);
|
|
|
|
extern void
|
|
pci_dma_sync_single_for_device (struct pci_dev *dev, dma_addr_t dma_addr,
|
|
size_t size, int dir);
|
|
|
|
|
|
/* Do multiple DMA mappings at once. */
|
|
extern int
|
|
pci_map_sg (struct pci_dev *pdev, struct scatterlist *sg, int sg_len, int dir);
|
|
|
|
/* Unmap multiple DMA mappings at once. */
|
|
extern void
|
|
pci_unmap_sg (struct pci_dev *pdev, struct scatterlist *sg, int sg_len,
|
|
int dir);
|
|
|
|
/* SG-list versions of pci_dma_sync functions. */
|
|
extern void
|
|
pci_dma_sync_sg_for_cpu (struct pci_dev *dev,
|
|
struct scatterlist *sg, int sg_len,
|
|
int dir);
|
|
extern void
|
|
pci_dma_sync_sg_for_device (struct pci_dev *dev,
|
|
struct scatterlist *sg, int sg_len,
|
|
int dir);
|
|
|
|
#define pci_map_page(dev, page, offs, size, dir) \
|
|
pci_map_single(dev, (page_address(page) + (offs)), size, dir)
|
|
#define pci_unmap_page(dev,addr,sz,dir) \
|
|
pci_unmap_single(dev, addr, sz, dir)
|
|
|
|
/* Test for pci_map_single or pci_map_page having generated an error. */
|
|
static inline int
|
|
pci_dma_mapping_error (dma_addr_t dma_addr)
|
|
{
|
|
return dma_addr == 0;
|
|
}
|
|
|
|
/* Allocate and map kernel buffer using consistent mode DMA for PCI
|
|
device. Returns non-NULL cpu-view pointer to the buffer if
|
|
successful and sets *DMA_ADDR to the pci side dma address as well,
|
|
else DMA_ADDR is undefined. */
|
|
extern void *
|
|
pci_alloc_consistent (struct pci_dev *pdev, size_t size, dma_addr_t *dma_addr);
|
|
|
|
/* Free and unmap a consistent DMA buffer. CPU_ADDR and DMA_ADDR must
|
|
be values that were returned from pci_alloc_consistent. SIZE must be
|
|
the same as what as passed into pci_alloc_consistent. References to
|
|
the memory and mappings assosciated with CPU_ADDR or DMA_ADDR past
|
|
this call are illegal. */
|
|
extern void
|
|
pci_free_consistent (struct pci_dev *pdev, size_t size, void *cpu_addr,
|
|
dma_addr_t dma_addr);
|
|
|
|
#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
|
|
|
|
extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
|
|
extern void pci_iounmap (struct pci_dev *dev, void __iomem *addr);
|
|
|
|
#endif /* __V850_PCI_H__ */
|