/* * The first dword of any GPU instruction is the "instruction header." Bits * 31:29 identify the general type of the command and determine how exact * opcodes and sub-opcodes will be encoded in the remaining bits.
*/ #define XE_INSTR_CMD_TYPE GENMASK(31, 29) #define XE_INSTR_MI REG_FIELD_PREP(XE_INSTR_CMD_TYPE, 0x0) #define XE_INSTR_GSC REG_FIELD_PREP(XE_INSTR_CMD_TYPE, 0x2) #define XE_INSTR_VIDEOPIPE REG_FIELD_PREP(XE_INSTR_CMD_TYPE, 0x3) #define XE_INSTR_GFXPIPE REG_FIELD_PREP(XE_INSTR_CMD_TYPE, 0x3) #define XE_INSTR_GFX_STATE REG_FIELD_PREP(XE_INSTR_CMD_TYPE, 0x4)
/* * Most (but not all) instructions have a "length" field in the instruction * header. The value expected is the total number of dwords for the * instruction, minus two. * * Some instructions have length fields longer or shorter than 8 bits, but * those are rare. This definition can be used for the common case where * the length field is from 7:0.
*/ #define XE_INSTR_LEN_MASK GENMASK(7, 0) #define XE_INSTR_NUM_DW(x) REG_FIELD_PREP(XE_INSTR_LEN_MASK, (x) - 2)
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