[ACPI] merge acpi-2.6.12 branch into latest Linux 2.6.13-rc...

[firefly-linux-kernel-4.4.55.git] / include / asm-alpha / pci.h

diff --git a/include/asm-alpha/pci.h b/include/asm-alpha/pci.h
index 7109860f98ec04737276d81637c740df1d155c76..28957697e59c5e426a3f969575ec374da251f29c 100644 (file)
--- a/include/asm-alpha/pci.h
+++ b/include/asm-alpha/pci.h
@@ -223,6 +223,25 @@ pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, dma64_addr_t dma_addr,
        /* Nothing to do. */
 }
 
+#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_BOUNDARY;
+       *strategy_parameter = cacheline_size;
+}
+#endif
+
 /* TODO: integrate with include/asm-generic/pci.h ? */
 static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
 {