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authorHidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>2009-04-20 05:54:59 +0400
committerJesse Barnes <jbarnes@virtuousgeek.org>2009-06-11 23:04:06 +0400
commit67b5db6502ddd27d65dea43bf036abbd82d0dfc9 (patch)
treec48ed504f52682b88f91e82a50586013410edd7f /include/linux/pci_regs.h
parent64f039d3d7f574943165b1afb72ee25caa1a9a91 (diff)
downloadlinux-67b5db6502ddd27d65dea43bf036abbd82d0dfc9.tar.xz
PCI MSI: Define PCI_MSI_MASK_32/64
Impact: cleanup, improve readability Define PCI_MSI_MASK_32/64 for 32/64bit devices, instead of using implicit offset (-4), "PCI_MSI_MASK_BIT - 4" and "PCI_MSI_MASK_BIT". Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Reviewed-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'include/linux/pci_regs.h')
-rw-r--r--include/linux/pci_regs.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/pci_regs.h b/include/linux/pci_regs.h
index dcba7668e0cd..83b02f5a25b2 100644
--- a/include/linux/pci_regs.h
+++ b/include/linux/pci_regs.h
@@ -295,8 +295,9 @@
#define PCI_MSI_ADDRESS_LO 4 /* Lower 32 bits */
#define PCI_MSI_ADDRESS_HI 8 /* Upper 32 bits (if PCI_MSI_FLAGS_64BIT set) */
#define PCI_MSI_DATA_32 8 /* 16 bits of data for 32-bit devices */
+#define PCI_MSI_MASK_32 12 /* Mask bits register for 32-bit devices */
#define PCI_MSI_DATA_64 12 /* 16 bits of data for 64-bit devices */
-#define PCI_MSI_MASK_BIT 16 /* Mask bits register */
+#define PCI_MSI_MASK_64 16 /* Mask bits register for 64-bit devices */
/* MSI-X registers (these are at offset PCI_MSIX_FLAGS) */
#define PCI_MSIX_FLAGS 2