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| author | Wang Sheng-Hui <shhuiw@foxmail.com> | 2016-09-22 09:05:46 +0800 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2016-12-12 10:05:22 -0600 |
| commit | cc10385b6fde3e5d3a3edaabf10a4e211ee8fe72 (patch) | |
| tree | 0065a8542ff2c67ce0ed1d52fc8d53e234d349cd /include/uapi | |
| parent | 1001354ca34179f3db924eb66672442a173147dc (diff) | |
| download | linux-cc10385b6fde3e5d3a3edaabf10a4e211ee8fe72.tar.gz linux-cc10385b6fde3e5d3a3edaabf10a4e211ee8fe72.tar.bz2 linux-cc10385b6fde3e5d3a3edaabf10a4e211ee8fe72.zip | |
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')
| -rw-r--r-- | include/uapi/linux/pci_regs.h | 8 |
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: */ |