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Commit 5929b8a3 authored by Rafał Miłecki's avatar Rafał Miłecki Committed by Bjorn Helgaas
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PCI: Add defines for PCIe Max_Read_Request_Size 



There are a few drivers using magic numbers when operating with PCIe
capabilities and PCI_EXP_DEVCTL_READRQ.  Define known values to allow
cleaning their code a bit.

Signed-off-by: default avatarRafał Miłecki <zajec5@gmail.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
parent 94a90312

include/uapi/linux/pci_regs.h

+4 −0
Original line number Diff line number Diff line
@@ -451,6 +451,10 @@ 
#define  PCI_EXP_DEVCTL_AUX_PME	0x0400	/* Auxiliary Power PM Enable */

#define  PCI_EXP_DEVCTL_NOSNOOP_EN 0x0800  /* Enable No Snoop */

#define  PCI_EXP_DEVCTL_READRQ	0x7000	/* Max_Read_Request_Size */

#define  PCI_EXP_DEVCTL_READRQ_128B  0x0000 /* 128 Bytes */

#define  PCI_EXP_DEVCTL_READRQ_256B  0x1000 /* 256 Bytes */

#define  PCI_EXP_DEVCTL_READRQ_512B  0x2000 /* 512 Bytes */

#define  PCI_EXP_DEVCTL_READRQ_1024B 0x3000 /* 1024 Bytes */

#define  PCI_EXP_DEVCTL_BCR_FLR 0x8000  /* Bridge Configuration Retry / FLR */

#define PCI_EXP_DEVSTA		10	/* Device Status */

#define  PCI_EXP_DEVSTA_CED	0x0001	/* Correctable Error Detected */