9a8fd55899
The attached patches provides part 6 of an architecture implementation for the Tensilica Xtensa CPU series. Signed-off-by: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
89 lines
2.4 KiB
C
89 lines
2.4 KiB
C
/*
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* linux/include/asm-xtensa/pci.h
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2001 - 2005 Tensilica Inc.
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*/
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#ifndef _XTENSA_PCI_H
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#define _XTENSA_PCI_H
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#ifdef __KERNEL__
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/* Can be used to override the logic in pci_scan_bus for skipping
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* already-configured bus numbers - to be used for buggy BIOSes
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* or architectures with incomplete PCI setup by the loader
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*/
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#define pcibios_assign_all_busses() 0
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extern struct pci_controller* pcibios_alloc_controller(void);
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extern inline void pcibios_set_master(struct pci_dev *dev)
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{
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/* No special bus mastering setup handling */
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}
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extern inline void pcibios_penalize_isa_irq(int irq)
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{
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/* We don't do dynamic PCI IRQ allocation */
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}
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/* Assume some values. (We should revise them, if necessary) */
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#define PCIBIOS_MIN_IO 0x2000
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#define PCIBIOS_MIN_MEM 0x10000000
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/* Dynamic DMA mapping stuff.
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* Xtensa has everything mapped statically like x86.
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*/
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <asm/scatterlist.h>
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#include <linux/string.h>
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#include <asm/io.h>
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struct pci_dev;
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/* The PCI address space does equal the physical memory address space.
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* The networking and block device layers use this boolean for bounce buffer
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* decisions.
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*/
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#define PCI_DMA_BUS_IS_PHYS (1)
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/* pci_unmap_{page,single} is a no-op, so */
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#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
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#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
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#define pci_unmap_addr(PTR, ADDR_NAME) (0)
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#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
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#define pci_ubnmap_len(PTR, LEN_NAME) (0)
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#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
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/* We cannot access memory above 4GB */
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#define pci_dac_dma_supported(pci_dev, mask) (0)
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/* Map a range of PCI memory or I/O space for a device into user space */
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int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
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enum pci_mmap_state mmap_state, int write_combine);
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/* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
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#define HAVE_PCI_MMAP 1
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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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#endif /* __KERNEL__ */
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/* Implement the pci_ DMA API in terms of the generic device dma_ one */
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#include <asm-generic/pci-dma-compat.h>
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/* Generic PCI */
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#include <asm-generic/pci.h>
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#endif /* _XTENSA_PCI_H */
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