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>

Wang Sheng-Hui committed 10 years ago

Commit cc103851 parent 10013543 files · +8 −5Browse files

Unified · Split

3 files

drivers/pci/pci.h +0 −3
drivers/vfio/pci/vfio_pci_config.c +0 −2
include/uapi/linux/pci_regs.h +8 −0

drivers/pci/pci.h+0−3

@@ -1,9 +1,6 @@
1	1	#ifndef DRIVERS_PCI_H
2	2	#define DRIVERS_PCI_H
3	3
4		−#define PCI_CFG_SPACE_SIZE 256
5		−#define PCI_CFG_SPACE_EXP_SIZE 4096
6		−
7	4	#define PCI_FIND_CAP_TTL 48
8	5
9	6	extern const unsigned char pcie_link_speed[];

drivers/vfio/pci/vfio_pci_config.c+0−2

@@ -31,8 +31,6 @@ · 30 unmodified lines
31	31
32	32	#include "vfio_pci_private.h"
33	33
34		−#define PCI_CFG_SPACE_SIZE 256
35		−
36	34	/* Fake capability ID for standard config space */
37	35	#define PCI_CAP_ID_BASIC 0
38	36

include/uapi/linux/pci_regs.h+8−0

@@ -22,6 +22,14 @@ · 21 unmodified lines
22	22	#ifndef LINUX_PCI_REGS_H
23	23	#define LINUX_PCI_REGS_H
24	24
	25	+/*
	26	+ * Conventional PCI and PCI-X Mode 1 devices have 256 bytes of
	27	+ * configuration space. PCI-X Mode 2 and PCIe devices have 4096 bytes of
	28	+ * configuration space.
	29	+ */
	30	+#define PCI_CFG_SPACE_SIZE 256
	31	+#define PCI_CFG_SPACE_EXP_SIZE 4096
	32	+
25	33	/*
26	34	* Under PCI, each device has 256 bytes of configuration address space,
27	35	* of which the first 64 bytes are standardized as follows: