71db63acff
There is a number of x86 laptops that have some non-PCI IO ports in the 0x1000-0x1fff range, and it's quite hard to control the correct order of resource allocation between PCI and other subsystems controlling these ports. Especially with modular kernel. So just increase PCIBIOS_MIN_IO to 0x4000 to prevent any new PCI resource allocations in the problematic range (this limitation must apply _only_ to the root bus resources - see Linus' change in pci_bus_alloc_resource). As PCIBIOS_MIN_IO and PCIBIOS_MIN_CARDBUS_IO are the same now on i386 and x86-64, we can remove the latter. Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
119 lines
3.1 KiB
C
119 lines
3.1 KiB
C
#ifndef __i386_PCI_H
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#define __i386_PCI_H
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#include <linux/config.h>
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#ifdef __KERNEL__
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#include <linux/mm.h> /* for struct page */
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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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#ifdef CONFIG_PCI
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extern unsigned int pcibios_assign_all_busses(void);
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#else
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#define pcibios_assign_all_busses() 0
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#endif
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#define pcibios_scan_all_fns(a, b) 0
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extern unsigned long pci_mem_start;
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#define PCIBIOS_MIN_IO 0x4000
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#define PCIBIOS_MIN_MEM (pci_mem_start)
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void pcibios_config_init(void);
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struct pci_bus * pcibios_scan_root(int bus);
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void pcibios_set_master(struct pci_dev *dev);
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void pcibios_penalize_isa_irq(int irq, int active);
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struct irq_routing_table *pcibios_get_irq_routing_table(void);
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int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
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/* Dynamic DMA mapping stuff.
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* i386 has everything mapped statically.
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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
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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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/* pci_unmap_{page,single} is a nop 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_unmap_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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/* This is always fine. */
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#define pci_dac_dma_supported(pci_dev, mask) (1)
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static inline dma64_addr_t
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pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, unsigned long offset, int direction)
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{
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return ((dma64_addr_t) page_to_phys(page) +
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(dma64_addr_t) offset);
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}
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static inline struct page *
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pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr)
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{
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return pfn_to_page(dma_addr >> PAGE_SHIFT);
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}
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static inline unsigned long
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pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr)
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{
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return (dma_addr & ~PAGE_MASK);
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}
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static inline void
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pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
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{
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}
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static inline void
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pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
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{
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flush_write_buffers();
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}
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#define HAVE_PCI_MMAP
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extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
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enum pci_mmap_state mmap_state, int write_combine);
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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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#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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#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 stuff */
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#include <asm-generic/pci.h>
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#endif /* __i386_PCI_H */
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