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Diffstat (limited to 'include/asm-ppc64/pci.h')
-rw-r--r--include/asm-ppc64/pci.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/asm-ppc64/pci.h b/include/asm-ppc64/pci.h
index 411bf5dee39..20beb10c090 100644
--- a/include/asm-ppc64/pci.h
+++ b/include/asm-ppc64/pci.h
@@ -78,6 +78,23 @@ static inline int pci_dac_dma_supported(struct pci_dev *hwdev,u64 mask)
return 0;
}
+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;
+}
+
extern int pci_domain_nr(struct pci_bus *bus);
/* Decide whether to display the domain number in /proc */