From: Basheer Ahmed Muddebihal <basheer.ahmed.muddebihal@xxxxxxxxxxxxxxx> This patch adds the definitions for DFHv1 header and related register bitfields. Signed-off-by: Basheer Ahmed Muddebihal <basheer.ahmed.muddebihal@xxxxxxxxxxxxxxx> Signed-off-by: Matthew Gerlach <matthew.gerlach@xxxxxxxxxxxxxxx> --- include/linux/dfl.h | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git a/include/linux/dfl.h b/include/linux/dfl.h index b5accdcfa368..61bcf20c1bc8 100644 --- a/include/linux/dfl.h +++ b/include/linux/dfl.h @@ -23,6 +23,16 @@ #define GUID_H 0x10 #define NEXT_AFU 0x18 +/* + * DFHv1 Register Offset definitons + * In DHFv1, DFH + GUID + CSR_START + CSR_SIZE_GROUP + PARAM_HDR + PARAM_DATA + * as common header registers + */ +#define DFHv1_CSR_ADDR 0x18 /* CSR Register start address */ +#define DFHv1_CSR_SIZE_GRP 0x20 /* Size of Reg Block and Group/tag */ +#define DFHv1_PARAM_HDR 0x28 /* Optional First Param header */ +#define DFHv1_PARAM_DATA 0x8 /* Offset of Param data from Param header */ + #define DFH_SIZE 0x8 /* Device Feature Header Register Bitfield */ @@ -30,8 +40,35 @@ #define DFH_REVISION GENMASK_ULL(15, 12) /* Feature revision */ #define DFH_NEXT_HDR_OFST GENMASK_ULL(39, 16) /* Offset to next DFH */ #define DFH_EOL BIT_ULL(40) /* End of list */ +#define DFH_VERSION GENMASK_ULL(59, 52) /* DFH version */ #define DFH_TYPE GENMASK_ULL(63, 60) /* Feature type */ +/* + * CSR Rel Bit, 1'b0 = relative (offset from feature DFH start), + * 1'b1 = absolute (ARM or other non-PCIe use) + */ +#define DFHv1_CSR_ADDR_REL BIT_ULL(0) + +/* + * CSR Header Register Bit Definitions + */ +#define DFHv1_CSR_ADDR_MASK GENMASK_ULL(63, 1) /* 63:1 of CSR address */ + +/* + * CSR SIZE Goup Register Bit Definitions + */ +#define DFHv1_CSR_SIZE_GRP_INSTANCE_ID GENMASK_ULL(15, 0) /* Enumeration instantiated IP */ +#define DFHv1_CSR_SIZE_GRP_GROUPING_ID GENMASK_ULL(30, 16) /* Group Features/interfaces */ +#define DFHv1_CSR_SIZE_GRP_HAS_PARAMS BIT_ULL(31) /* Presence of Parameters */ +#define DFHv1_CSR_SIZE_GRP_SIZE GENMASK_ULL(63, 32) /* Size of CSR Block in bytes */ + +/* + * PARAM Header Register Bit Definitions + */ +#define DFHv1_PARAM_HDR_ID GENMASK_ULL(15, 0) /* Id of this Param */ +#define DFHv1_PARAM_HDR_VERSION GENMASK_ULL(31, 16) /* Version Param */ +#define DFHv1_PARAM_HDR_NEXT_OFFSET GENMASK_ULL(63, 32) /* Offset of next Param */ + /** * enum dfl_id_type - define the DFL FIU types */ -- 2.25.1
