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575e3348cb
I'm not sure if this is going to fly, weak symbols work on the compilers I'm using, but whether they work for all of the affected architectures I can't say. I've cc'ed as many arch maintainers/lists as I could find. But assuming they do, we can use a weak empty definition of pcibios_add_platform_entries() to avoid having an empty definition on every arch. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
120 lines
3.9 KiB
C
120 lines
3.9 KiB
C
/*
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* include/asm-v850/pci.h -- PCI support
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*
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* Copyright (C) 2001,02,05 NEC Corporation
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* Copyright (C) 2001,02,05 Miles Bader <miles@gnu.org>
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*
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* This file is subject to the terms and conditions of the GNU General
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* Public License. See the file COPYING in the main directory of this
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* archive for more details.
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*
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* Written by Miles Bader <miles@gnu.org>
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*/
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#ifndef __V850_PCI_H__
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#define __V850_PCI_H__
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/* Get any platform-dependent definitions. */
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#include <asm/machdep.h>
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#define pcibios_scan_all_fns(a, b) 0
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/* Generic declarations. */
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struct scatterlist;
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extern void pcibios_set_master (struct pci_dev *dev);
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/* `Grant' to PDEV the memory block at CPU_ADDR, for doing DMA. The
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32-bit PCI bus mastering address to use is returned. the device owns
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this memory until either pci_unmap_single or pci_dma_sync_single_for_cpu is
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performed. */
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extern dma_addr_t
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pci_map_single (struct pci_dev *pdev, void *cpu_addr, size_t size, int dir);
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/* Return to the CPU the PCI DMA memory block previously `granted' to
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PDEV, at DMA_ADDR. */
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extern void
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pci_unmap_single (struct pci_dev *pdev, dma_addr_t dma_addr, size_t size,
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int dir);
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/* Make physical memory consistent for a single streaming mode DMA
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translation after a transfer.
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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 next
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point you give the PCI dma address back to the card, you must first
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perform a pci_dma_sync_for_device, and then the device again owns
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the buffer. */
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extern void
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pci_dma_sync_single_for_cpu (struct pci_dev *dev, dma_addr_t dma_addr,
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size_t size, int dir);
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extern void
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pci_dma_sync_single_for_device (struct pci_dev *dev, dma_addr_t dma_addr,
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size_t size, int dir);
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/* Do multiple DMA mappings at once. */
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extern int
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pci_map_sg (struct pci_dev *pdev, struct scatterlist *sg, int sg_len, int dir);
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/* Unmap multiple DMA mappings at once. */
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extern void
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pci_unmap_sg (struct pci_dev *pdev, struct scatterlist *sg, int sg_len,
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int dir);
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/* SG-list versions of pci_dma_sync functions. */
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extern void
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pci_dma_sync_sg_for_cpu (struct pci_dev *dev,
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struct scatterlist *sg, int sg_len,
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int dir);
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extern void
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pci_dma_sync_sg_for_device (struct pci_dev *dev,
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struct scatterlist *sg, int sg_len,
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int dir);
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#define pci_map_page(dev, page, offs, size, dir) \
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pci_map_single(dev, (page_address(page) + (offs)), size, dir)
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#define pci_unmap_page(dev,addr,sz,dir) \
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pci_unmap_single(dev, addr, sz, dir)
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/* Test for pci_map_single or pci_map_page having generated an error. */
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static inline int
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pci_dma_mapping_error (dma_addr_t dma_addr)
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{
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return dma_addr == 0;
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}
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/* Allocate and map kernel buffer using consistent mode DMA for PCI
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device. Returns non-NULL cpu-view pointer to the buffer if
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successful and sets *DMA_ADDR to the pci side dma address as well,
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else DMA_ADDR is undefined. */
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extern void *
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pci_alloc_consistent (struct pci_dev *pdev, size_t size, dma_addr_t *dma_addr);
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/* Free and unmap a consistent DMA buffer. CPU_ADDR and DMA_ADDR must
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be values that were returned from pci_alloc_consistent. SIZE must be
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the same as what as passed into pci_alloc_consistent. References to
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the memory and mappings assosciated with CPU_ADDR or DMA_ADDR past
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this call are illegal. */
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extern void
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pci_free_consistent (struct pci_dev *pdev, size_t size, void *cpu_addr,
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dma_addr_t dma_addr);
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#ifdef CONFIG_PCI
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static inline void pci_dma_burst_advice(struct pci_dev *pdev,
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enum pci_dma_burst_strategy *strat,
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unsigned long *strategy_parameter)
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{
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*strat = PCI_DMA_BURST_INFINITY;
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*strategy_parameter = ~0UL;
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}
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#endif
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extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
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extern void pci_iounmap (struct pci_dev *dev, void __iomem *addr);
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#endif /* __V850_PCI_H__ */
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