[PATCH v6 3/5] PCI: Add Enhanced Allocation register entries
From: David Daney <hidden>
Date: 2015-10-20 23:05:03
Also in:
linux-pci, lkml
Subsystem:
pci subsystem, the rest · Maintainers:
Bjorn Helgaas, Linus Torvalds
From: "Sean O. Stalley" <redacted> Add registers defined in PCI-SIG's Enhanced allocation ECN. Signed-off-by: Sean O. Stalley <redacted> [david.daney@cavium.com: Added more definitions for PCI_EA_BEI_*] Signed-off-by: Signed-off-by: David Daney <redacted> --- include/uapi/linux/pci_regs.h | 44 ++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 43 insertions(+), 1 deletion(-)
diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
index 413417f..199ea45 100644
--- a/include/uapi/linux/pci_regs.h
+++ b/include/uapi/linux/pci_regs.h@@ -216,7 +216,8 @@ #define PCI_CAP_ID_MSIX 0x11 /* MSI-X */ #define PCI_CAP_ID_SATA 0x12 /* SATA Data/Index Conf. */ #define PCI_CAP_ID_AF 0x13 /* PCI Advanced Features */ -#define PCI_CAP_ID_MAX PCI_CAP_ID_AF +#define PCI_CAP_ID_EA 0x14 /* PCI Enhanced Allocation */ +#define PCI_CAP_ID_MAX PCI_CAP_ID_EA #define PCI_CAP_LIST_NEXT 1 /* Next capability in the list */ #define PCI_CAP_FLAGS 2 /* Capability defined flags (16 bits) */ #define PCI_CAP_SIZEOF 4
@@ -353,6 +354,47 @@ #define PCI_AF_STATUS_TP 0x01 #define PCI_CAP_AF_SIZEOF 6 /* size of AF registers */ +/* PCI Enhanced Allocation registers */ + +#define PCI_EA_NUM_ENT 2 /* Number of Capability Entries */ +#define PCI_EA_NUM_ENT_MASK 0x3f /* Num Entries Mask */ +#define PCI_EA_FIRST_ENT 4 /* First EA Entry in List */ +#define PCI_EA_FIRST_ENT_BRIDGE 8 /* First EA Entry for Bridges */ +#define PCI_EA_ES 0x7 /* Entry Size */ +#define PCI_EA_BEI(x) (((x) >> 4) & 0xf) /* BAR Equivalent Indicator */ +/* 0-5 map to BARs 0-5 respectively */ +#define PCI_EA_BEI_BAR0 0 +#define PCI_EA_BEI_BAR5 5 +#define PCI_EA_BEI_BRIDGE 6 /* Resource behind bridge */ +#define PCI_EA_BEI_ENI 7 /* Equivalent Not Indicated */ +#define PCI_EA_BEI_ROM 8 /* Expansion ROM */ +/* 9-14 map to VF BARs 0-5 respectively */ +#define PCI_EA_BEI_VF_BAR0 9 +#define PCI_EA_BEI_VF_BAR5 14 +#define PCI_EA_BEI_RESERVED 15 /* Reserved - Treat like ENI */ + +#define PCI_EA_PP(x) (((x) >> 8) & 0xff) /* Primary Properties */ +#define PCI_EA_SP(x) (((x) >> 16) & 0xff) /* Secondary Properties */ +#define PCI_EA_P_MEM 0x00 /* Non-Prefetch Memory */ +#define PCI_EA_P_MEM_PREFETCH 0x01 /* Prefetchable Memory */ +#define PCI_EA_P_IO 0x02 /* I/O Space */ +#define PCI_EA_P_VF_MEM_PREFETCH 0x03 /* VF Prefetchable Memory */ +#define PCI_EA_P_VF_MEM 0x04 /* VF Non-Prefetch Memory */ +#define PCI_EA_P_BRIDGE_MEM 0x05 /* Bridge Non-Prefetch Memory */ +#define PCI_EA_P_BRIDGE_MEM_PREFETCH 0x06 /* Bridge Prefetchable Memory */ +#define PCI_EA_P_BRIDGE_IO 0x07 /* Bridge I/O Space */ +/* 0x08-0xfc reserved */ +#define PCI_EA_P_MEM_RESERVED 0xfd /* Reserved Memory */ +#define PCI_EA_P_IO_RESERVED 0xfe /* Reserved I/O Space */ +#define PCI_EA_P_UNAVAILABLE 0xff /* Entry Unavailable */ +#define PCI_EA_WRITEABLE 0x40000000 /* Writable: 1 = RW, 0 = HwInit */ +#define PCI_EA_ENABLE 0x80000000 /* Enable for this entry */ +#define PCI_EA_BASE 4 /* Base Address Offset */ +#define PCI_EA_MAX_OFFSET 8 /* MaxOffset (resource length) */ +/* bit 0 is reserved */ +#define PCI_EA_IS_64 0x00000002 /* 64-bit field flag */ +#define PCI_EA_FIELD_MASK 0xfffffffc /* For Base & Max Offset */ + /* PCI-X registers (Type 0 (non-bridge) devices) */ #define PCI_X_CMD 2 /* Modes & Features */
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1.9.1