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| author |   Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-28 14:59:07 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-28 14:59:07 -0700 |
| commit | adb2705a89e8b41abcf29c0ed86f4ce93ab36734 (patch) | |
| tree | 01d772570d58cce24b61874e711fd9f51e2729e7 /include/asm-ia64/pci.h | |
| parent | [PATCH] Tweak idle thread setup semantics (diff) | |
| parent | Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 (diff) | |
| download | linux-dev-adb2705a89e8b41abcf29c0ed86f4ce93ab36734.tar.xz linux-dev-adb2705a89e8b41abcf29c0ed86f4ce93ab36734.zip | |
Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6
Diffstat (limited to 'include/asm-ia64/pci.h')
| -rw-r--r-- | include/asm-ia64/pci.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/asm-ia64/pci.h b/include/asm-ia64/pci.h index a8314ee4e7d2..0c4c5d801d3f 100644 --- a/include/asm-ia64/pci.h +++ b/include/asm-ia64/pci.h @@ -82,6 +82,25 @@ extern int pcibios_prep_mwi (struct pci_dev *); #define sg_dma_len(sg) ((sg)->dma_length) #define sg_dma_address(sg) ((sg)->dma_address) +#ifdef CONFIG_PCI +static inline void pci_dma_burst_advice(struct pci_dev *pdev, + enum pci_dma_burst_strategy *strat, + unsigned long *strategy_parameter) +{ + unsigned long cacheline_size; + u8 byte; + + pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte); + if (byte == 0) + cacheline_size = 1024; + else + cacheline_size = (int) byte * 4; + + *strat = PCI_DMA_BURST_MULTIPLE; + *strategy_parameter = cacheline_size; +} +#endif + #define HAVE_PCI_MMAP extern int pci_mmap_page_range (struct pci_dev *dev, struct vm_area_struct *vma, enum pci_mmap_state mmap_state, int write_combine); |