[PATCH] PCI: DMA bursting advice

[linux-2.6-omap-h63xx.git] / include / linux / pci.h

diff --git a/include/linux/pci.h b/include/linux/pci.h
index cfa1455848f4fd8169bc004229825fc8e2edeb3d..9ce4f1be093fb478f78decbb2e6cbc9df52a9261 100644 (file)
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -874,6 +874,15 @@ int pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max, int pass
 #define        pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle)
 #define        pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr)
 
+enum pci_dma_burst_strategy {
+       PCI_DMA_BURST_INFINITY, /* make bursts as large as possible,
+                                  strategy_parameter is N/A */
+       PCI_DMA_BURST_BOUNDARY, /* disconnect at every strategy_parameter
+                                  byte boundaries */
+       PCI_DMA_BURST_MULTIPLE, /* disconnect at some multiple of
+                                  strategy_parameter byte boundaries */
+};
+
 #if defined(CONFIG_ISA) || defined(CONFIG_EISA)
 extern struct pci_dev *isa_bridge;
 #endif