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authorWang Sheng-Hui <shhuiw@foxmail.com>2016-09-22 04:05:46 +0300
committerBjorn Helgaas <bhelgaas@google.com>2016-12-12 19:05:22 +0300
commitcc10385b6fde3e5d3a3edaabf10a4e211ee8fe72 (patch)
tree0065a8542ff2c67ce0ed1d52fc8d53e234d349cd /include/uapi/linux/pci_regs.h
parent1001354ca34179f3db924eb66672442a173147dc (diff)
downloadlinux-cc10385b6fde3e5d3a3edaabf10a4e211ee8fe72.tar.xz
PCI: Move config space size macros to pci_regs.h
Move PCI configuration space size macros (PCI_CFG_SPACE_SIZE and PCI_CFG_SPACE_EXP_SIZE) from drivers/pci/pci.h to include/uapi/linux/pci_regs.h so they can be used by more drivers and eliminate duplicate definitions. [bhelgaas: Expand comment to include PCI-X details] Signed-off-by: Wang Sheng-Hui <shhuiw@foxmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'include/uapi/linux/pci_regs.h')
-rw-r--r--include/uapi/linux/pci_regs.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
index e5a2e68b2236..174d1147081b 100644
--- a/include/uapi/linux/pci_regs.h
+++ b/include/uapi/linux/pci_regs.h
@@ -23,6 +23,14 @@
#define LINUX_PCI_REGS_H
/*
+ * Conventional PCI and PCI-X Mode 1 devices have 256 bytes of
+ * configuration space. PCI-X Mode 2 and PCIe devices have 4096 bytes of
+ * configuration space.
+ */
+#define PCI_CFG_SPACE_SIZE 256
+#define PCI_CFG_SPACE_EXP_SIZE 4096
+
+/*
* Under PCI, each device has 256 bytes of configuration address space,
* of which the first 64 bytes are standardized as follows:
*/