X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fgallium%2Fdrivers%2Fvc4%2Fvc4_qpu_emit.c;h=6a10e1b68de393e902f74b1309edd5eff2e9a3b7;hb=1ffe77e7bb2486ea74cda077ed2a9622b758395c;hp=2055fa5d231c7f2341b2af411b97351b82415a38;hpb=f09ed63f4342846e361242233162799140674d5f;p=mesa.git diff --git a/src/gallium/drivers/vc4/vc4_qpu_emit.c b/src/gallium/drivers/vc4/vc4_qpu_emit.c index 2055fa5d231..6a10e1b68de 100644 --- a/src/gallium/drivers/vc4/vc4_qpu_emit.c +++ b/src/gallium/drivers/vc4/vc4_qpu_emit.c @@ -40,28 +40,35 @@ vc4_dump_program(struct vc4_compile *c) vc4_qpu_disasm(&c->qpu_insts[i], 1); fprintf(stderr, "\n"); } + fprintf(stderr, "\n"); } static void -queue(struct vc4_compile *c, uint64_t inst) +queue(struct qblock *block, uint64_t inst) { - struct queued_qpu_inst *q = rzalloc(c, struct queued_qpu_inst); + struct queued_qpu_inst *q = rzalloc(block, struct queued_qpu_inst); q->inst = inst; - list_addtail(&q->link, &c->qpu_inst_list); + list_addtail(&q->link, &block->qpu_inst_list); } static uint64_t * -last_inst(struct vc4_compile *c) +last_inst(struct qblock *block) { struct queued_qpu_inst *q = - (struct queued_qpu_inst *)c->qpu_inst_list.prev; + (struct queued_qpu_inst *)block->qpu_inst_list.prev; return &q->inst; } static void -set_last_cond_add(struct vc4_compile *c, uint32_t cond) +set_last_cond_add(struct qblock *block, uint32_t cond) { - *last_inst(c) = qpu_set_cond_add(*last_inst(c), cond); + *last_inst(block) = qpu_set_cond_add(*last_inst(block), cond); +} + +static void +set_last_cond_mul(struct qblock *block, uint32_t cond) +{ + *last_inst(block) = qpu_set_cond_mul(*last_inst(block), cond); } /** @@ -99,9 +106,10 @@ swap_file(struct qpu_reg *src) * instruction, instead. We reserve ra31/rb31 for this purpose. */ static void -fixup_raddr_conflict(struct vc4_compile *c, +fixup_raddr_conflict(struct qblock *block, struct qpu_reg dst, - struct qpu_reg *src0, struct qpu_reg *src1) + struct qpu_reg *src0, struct qpu_reg *src1, + struct qinst *inst, uint64_t *unpack) { uint32_t mux0 = src0->mux == QPU_MUX_SMALL_IMM ? QPU_MUX_B : src0->mux; uint32_t mux1 = src1->mux == QPU_MUX_SMALL_IMM ? QPU_MUX_B : src1->mux; @@ -117,60 +125,67 @@ fixup_raddr_conflict(struct vc4_compile *c, return; if (mux0 == QPU_MUX_A) { - queue(c, qpu_a_MOV(qpu_rb(31), *src0)); + /* Make sure we use the same type of MOV as the instruction, + * in case of unpacks. + */ + if (qir_is_float_input(inst)) + queue(block, qpu_a_FMAX(qpu_rb(31), *src0, *src0)); + else + queue(block, qpu_a_MOV(qpu_rb(31), *src0)); + + /* If we had an unpack on this A-file source, we need to put + * it into this MOV, not into the later move from regfile B. + */ + if (inst->src[0].pack) { + *last_inst(block) |= *unpack; + *unpack = 0; + } *src0 = qpu_rb(31); } else { - queue(c, qpu_a_MOV(qpu_ra(31), *src0)); + queue(block, qpu_a_MOV(qpu_ra(31), *src0)); *src0 = qpu_ra(31); } } -void -vc4_generate_code(struct vc4_context *vc4, struct vc4_compile *c) +static void +set_last_dst_pack(struct qblock *block, struct qinst *inst) { - struct qpu_reg *temp_registers = vc4_register_allocate(vc4, c); - bool discard = false; - uint32_t inputs_remaining = c->num_inputs; - uint32_t vpm_read_fifo_count = 0; - uint32_t vpm_read_offset = 0; - int last_vpm_read_index = -1; - /* Map from the QIR ops enum order to QPU unpack bits. */ - static const uint32_t unpack_map[] = { - QPU_UNPACK_8A, - QPU_UNPACK_8B, - QPU_UNPACK_8C, - QPU_UNPACK_8D, - QPU_UNPACK_16A_TO_F32, - QPU_UNPACK_16B_TO_F32, - }; - - list_inithead(&c->qpu_inst_list); + bool had_pm = *last_inst(block) & QPU_PM; + bool had_ws = *last_inst(block) & QPU_WS; + uint32_t unpack = QPU_GET_FIELD(*last_inst(block), QPU_UNPACK); - switch (c->stage) { - case QSTAGE_VERT: - case QSTAGE_COORD: - /* There's a 4-entry FIFO for VPMVCD reads, each of which can - * load up to 16 dwords (4 vec4s) per vertex. - */ - while (inputs_remaining) { - uint32_t num_entries = MIN2(inputs_remaining, 16); - queue(c, qpu_load_imm_ui(qpu_vrsetup(), - vpm_read_offset | - 0x00001a00 | - ((num_entries & 0xf) << 20))); - inputs_remaining -= num_entries; - vpm_read_offset += num_entries; - vpm_read_fifo_count++; - } - assert(vpm_read_fifo_count <= 4); + if (!inst->dst.pack) + return; - queue(c, qpu_load_imm_ui(qpu_vwsetup(), 0x00001a00)); - break; - case QSTAGE_FRAG: - break; + *last_inst(block) |= QPU_SET_FIELD(inst->dst.pack, QPU_PACK); + + if (qir_is_mul(inst)) { + assert(!unpack || had_pm); + *last_inst(block) |= QPU_PM; + } else { + assert(!unpack || !had_pm); + assert(!had_ws); /* dst must be a-file to pack. */ } +} - list_for_each_entry(struct qinst, qinst, &c->instructions, link) { +static void +handle_r4_qpu_write(struct qblock *block, struct qinst *qinst, + struct qpu_reg dst) +{ + if (dst.mux != QPU_MUX_R4) + queue(block, qpu_a_MOV(dst, qpu_r4())); + else if (qinst->sf) + queue(block, qpu_a_MOV(qpu_ra(QPU_W_NOP), qpu_r4())); +} + +static void +vc4_generate_code_block(struct vc4_compile *c, + struct qblock *block, + struct qpu_reg *temp_registers) +{ + int last_vpm_read_index = -1; + + qir_for_each_inst(qinst, block) { #if 0 fprintf(stderr, "translating qinst to qpu: "); qir_dump_inst(qinst); @@ -209,17 +224,34 @@ vc4_generate_code(struct vc4_context *vc4, struct vc4_compile *c) M(V8ADDS), M(V8SUBS), M(MUL24), + + /* If we replicate src[0] out to src[1], this works + * out the same as a MOV. + */ + [QOP_MOV] = { QPU_A_OR }, + [QOP_FMOV] = { QPU_A_FMAX }, + [QOP_MMOV] = { QPU_M_V8MIN }, }; + uint64_t unpack = 0; struct qpu_reg src[4]; for (int i = 0; i < qir_get_op_nsrc(qinst->op); i++) { int index = qinst->src[i].index; switch (qinst->src[i].file) { case QFILE_NULL: + case QFILE_LOAD_IMM: src[i] = qpu_rn(0); break; case QFILE_TEMP: src[i] = temp_registers[index]; + if (qinst->src[i].pack) { + assert(!unpack || + unpack == qinst->src[i].pack); + unpack = QPU_SET_FIELD(qinst->src[i].pack, + QPU_UNPACK); + if (src[i].mux == QPU_MUX_R4) + unpack |= QPU_PM; + } break; case QFILE_UNIF: src[i] = qpu_unif(); @@ -242,6 +274,22 @@ vc4_generate_code(struct vc4_context *vc4, struct vc4_compile *c) last_vpm_read_index = qinst->src[i].index; src[i] = qpu_ra(QPU_R_VPM); break; + + case QFILE_FRAG_X: + src[i] = qpu_ra(QPU_R_XY_PIXEL_COORD); + break; + case QFILE_FRAG_Y: + src[i] = qpu_rb(QPU_R_XY_PIXEL_COORD); + break; + case QFILE_FRAG_REV_FLAG: + src[i] = qpu_rb(QPU_R_MS_REV_FLAGS); + break; + + case QFILE_TLB_COLOR_WRITE: + case QFILE_TLB_COLOR_WRITE_MS: + case QFILE_TLB_Z_WRITE: + case QFILE_TLB_STENCIL_SETUP: + unreachable("bad qir src file"); } } @@ -256,111 +304,77 @@ vc4_generate_code(struct vc4_context *vc4, struct vc4_compile *c) case QFILE_VPM: dst = qpu_ra(QPU_W_VPM); break; - case QFILE_VARY: - case QFILE_UNIF: - case QFILE_SMALL_IMM: - assert(!"not reached"); - break; - } - switch (qinst->op) { - case QOP_MOV: - /* Skip emitting the MOV if it's a no-op. */ - if (qir_is_raw_mov(qinst) || - dst.mux != src[0].mux || dst.addr != src[0].addr) { - queue(c, qpu_a_MOV(dst, src[0])); - } + case QFILE_TLB_COLOR_WRITE: + dst = qpu_tlbc(); break; - case QOP_SEL_X_0_ZS: - case QOP_SEL_X_0_ZC: - case QOP_SEL_X_0_NS: - case QOP_SEL_X_0_NC: - queue(c, qpu_a_MOV(dst, src[0])); - set_last_cond_add(c, qinst->op - QOP_SEL_X_0_ZS + - QPU_COND_ZS); - - queue(c, qpu_a_XOR(dst, qpu_r0(), qpu_r0())); - set_last_cond_add(c, ((qinst->op - QOP_SEL_X_0_ZS) ^ - 1) + QPU_COND_ZS); + case QFILE_TLB_COLOR_WRITE_MS: + dst = qpu_tlbc_ms(); break; - case QOP_SEL_X_Y_ZS: - case QOP_SEL_X_Y_ZC: - case QOP_SEL_X_Y_NS: - case QOP_SEL_X_Y_NC: - queue(c, qpu_a_MOV(dst, src[0])); - set_last_cond_add(c, qinst->op - QOP_SEL_X_Y_ZS + - QPU_COND_ZS); + case QFILE_TLB_Z_WRITE: + dst = qpu_ra(QPU_W_TLB_Z); + break; - queue(c, qpu_a_MOV(dst, src[1])); - set_last_cond_add(c, ((qinst->op - QOP_SEL_X_Y_ZS) ^ - 1) + QPU_COND_ZS); + case QFILE_TLB_STENCIL_SETUP: + dst = qpu_ra(QPU_W_TLB_STENCIL_SETUP); + break; + case QFILE_VARY: + case QFILE_UNIF: + case QFILE_SMALL_IMM: + case QFILE_LOAD_IMM: + case QFILE_FRAG_X: + case QFILE_FRAG_Y: + case QFILE_FRAG_REV_FLAG: + assert(!"not reached"); break; + } + bool handled_qinst_cond = false; + + switch (qinst->op) { case QOP_RCP: case QOP_RSQ: case QOP_EXP2: case QOP_LOG2: switch (qinst->op) { case QOP_RCP: - queue(c, qpu_a_MOV(qpu_rb(QPU_W_SFU_RECIP), - src[0])); + queue(block, qpu_a_MOV(qpu_rb(QPU_W_SFU_RECIP), + src[0]) | unpack); break; case QOP_RSQ: - queue(c, qpu_a_MOV(qpu_rb(QPU_W_SFU_RECIPSQRT), - src[0])); + queue(block, qpu_a_MOV(qpu_rb(QPU_W_SFU_RECIPSQRT), + src[0]) | unpack); break; case QOP_EXP2: - queue(c, qpu_a_MOV(qpu_rb(QPU_W_SFU_EXP), - src[0])); + queue(block, qpu_a_MOV(qpu_rb(QPU_W_SFU_EXP), + src[0]) | unpack); break; case QOP_LOG2: - queue(c, qpu_a_MOV(qpu_rb(QPU_W_SFU_LOG), - src[0])); + queue(block, qpu_a_MOV(qpu_rb(QPU_W_SFU_LOG), + src[0]) | unpack); break; default: abort(); } - if (dst.mux != QPU_MUX_R4) - queue(c, qpu_a_MOV(dst, qpu_r4())); + handle_r4_qpu_write(block, qinst, dst); break; - case QOP_PACK_8888_F: - queue(c, qpu_m_MOV(dst, src[0])); - *last_inst(c) |= QPU_PM; - *last_inst(c) |= QPU_SET_FIELD(QPU_PACK_MUL_8888, - QPU_PACK); + case QOP_LOAD_IMM: + assert(qinst->src[0].file == QFILE_LOAD_IMM); + queue(block, qpu_load_imm_ui(dst, qinst->src[0].index)); break; - case QOP_PACK_8A_F: - case QOP_PACK_8B_F: - case QOP_PACK_8C_F: - case QOP_PACK_8D_F: - queue(c, - qpu_m_MOV(dst, src[0]) | - QPU_PM | - QPU_SET_FIELD(QPU_PACK_MUL_8A + - qinst->op - QOP_PACK_8A_F, - QPU_PACK)); - break; - - case QOP_FRAG_X: - queue(c, qpu_a_ITOF(dst, - qpu_ra(QPU_R_XY_PIXEL_COORD))); - break; - - case QOP_FRAG_Y: - queue(c, qpu_a_ITOF(dst, - qpu_rb(QPU_R_XY_PIXEL_COORD))); - break; - - case QOP_FRAG_REV_FLAG: - queue(c, qpu_a_ITOF(dst, - qpu_rb(QPU_R_MS_REV_FLAGS))); + case QOP_MS_MASK: + src[1] = qpu_ra(QPU_R_MS_REV_FLAGS); + fixup_raddr_conflict(block, dst, &src[0], &src[1], + qinst, &unpack); + queue(block, qpu_a_AND(qpu_ra(QPU_W_MS_FLAGS), + src[0], src[1]) | unpack); break; case QOP_FRAG_Z: @@ -370,126 +384,67 @@ vc4_generate_code(struct vc4_context *vc4, struct vc4_compile *c) */ break; - case QOP_TLB_DISCARD_SETUP: - discard = true; - queue(c, qpu_a_MOV(src[0], src[0])); - *last_inst(c) |= QPU_SF; - break; - - case QOP_TLB_STENCIL_SETUP: - queue(c, qpu_a_MOV(qpu_ra(QPU_W_TLB_STENCIL_SETUP), src[0])); - break; - - case QOP_TLB_Z_WRITE: - queue(c, qpu_a_MOV(qpu_ra(QPU_W_TLB_Z), src[0])); - if (discard) { - set_last_cond_add(c, QPU_COND_ZS); - } - break; - case QOP_TLB_COLOR_READ: - queue(c, qpu_NOP()); - *last_inst(c) = qpu_set_sig(*last_inst(c), - QPU_SIG_COLOR_LOAD); - - if (dst.mux != QPU_MUX_R4) - queue(c, qpu_a_MOV(dst, qpu_r4())); - break; - - case QOP_TLB_COLOR_WRITE: - queue(c, qpu_a_MOV(qpu_tlbc(), src[0])); - if (discard) { - set_last_cond_add(c, QPU_COND_ZS); - } + queue(block, qpu_NOP()); + *last_inst(block) = qpu_set_sig(*last_inst(block), + QPU_SIG_COLOR_LOAD); + handle_r4_qpu_write(block, qinst, dst); break; case QOP_VARY_ADD_C: - queue(c, qpu_a_FADD(dst, src[0], qpu_r5())); + queue(block, qpu_a_FADD(dst, src[0], qpu_r5()) | unpack); break; case QOP_TEX_S: case QOP_TEX_T: case QOP_TEX_R: case QOP_TEX_B: - queue(c, qpu_a_MOV(qpu_rb(QPU_W_TMU0_S + - (qinst->op - QOP_TEX_S)), - src[0])); + queue(block, qpu_a_MOV(qpu_rb(QPU_W_TMU0_S + + (qinst->op - QOP_TEX_S)), + src[0]) | unpack); break; case QOP_TEX_DIRECT: - fixup_raddr_conflict(c, dst, &src[0], &src[1]); - queue(c, qpu_a_ADD(qpu_rb(QPU_W_TMU0_S), src[0], src[1])); + fixup_raddr_conflict(block, dst, &src[0], &src[1], + qinst, &unpack); + queue(block, qpu_a_ADD(qpu_rb(QPU_W_TMU0_S), + src[0], src[1]) | unpack); break; case QOP_TEX_RESULT: - queue(c, qpu_NOP()); - *last_inst(c) = qpu_set_sig(*last_inst(c), - QPU_SIG_LOAD_TMU0); - if (dst.mux != QPU_MUX_R4) - queue(c, qpu_a_MOV(dst, qpu_r4())); + queue(block, qpu_NOP()); + *last_inst(block) = qpu_set_sig(*last_inst(block), + QPU_SIG_LOAD_TMU0); + handle_r4_qpu_write(block, qinst, dst); break; - case QOP_UNPACK_8A_F: - case QOP_UNPACK_8B_F: - case QOP_UNPACK_8C_F: - case QOP_UNPACK_8D_F: - case QOP_UNPACK_16A_F: - case QOP_UNPACK_16B_F: { - if (src[0].mux == QPU_MUX_R4) { - queue(c, qpu_a_MOV(dst, src[0])); - *last_inst(c) |= QPU_PM; - *last_inst(c) |= QPU_SET_FIELD(QPU_UNPACK_8A + - (qinst->op - - QOP_UNPACK_8A_F), - QPU_UNPACK); - } else { - assert(src[0].mux == QPU_MUX_A); - - /* Since we're setting the pack bits, if the - * destination is in A it would get re-packed. - */ - queue(c, qpu_a_FMAX((dst.mux == QPU_MUX_A ? - qpu_rb(31) : dst), - src[0], src[0])); - *last_inst(c) |= - QPU_SET_FIELD(unpack_map[qinst->op - - QOP_UNPACK_8A_F], - QPU_UNPACK); - - if (dst.mux == QPU_MUX_A) { - queue(c, qpu_a_MOV(dst, qpu_rb(31))); - } - } - } + case QOP_BRANCH: + /* The branch target will be updated at QPU scheduling + * time. + */ + queue(block, (qpu_branch(qinst->cond, 0) | + QPU_BRANCH_REL)); + handled_qinst_cond = true; break; - case QOP_UNPACK_8A_I: - case QOP_UNPACK_8B_I: - case QOP_UNPACK_8C_I: - case QOP_UNPACK_8D_I: - case QOP_UNPACK_16A_I: - case QOP_UNPACK_16B_I: { - assert(src[0].mux == QPU_MUX_A); + case QOP_UNIFORMS_RESET: + fixup_raddr_conflict(block, dst, &src[0], &src[1], + qinst, &unpack); - /* Since we're setting the pack bits, if the - * destination is in A it would get re-packed. - */ - queue(c, qpu_a_MOV((dst.mux == QPU_MUX_A ? - qpu_rb(31) : dst), src[0])); - *last_inst(c) |= QPU_SET_FIELD(unpack_map[qinst->op - - QOP_UNPACK_8A_I], - QPU_UNPACK); - - if (dst.mux == QPU_MUX_A) { - queue(c, qpu_a_MOV(dst, qpu_rb(31))); - } - } + queue(block, qpu_a_ADD(qpu_ra(QPU_W_UNIFORMS_ADDRESS), + src[0], src[1])); break; default: assert(qinst->op < ARRAY_SIZE(translate)); assert(translate[qinst->op].op != 0); /* NOPs */ + /* Skip emitting the MOV if it's a no-op. */ + if (qir_is_raw_mov(qinst) && + dst.mux == src[0].mux && dst.addr == src[0].addr) { + break; + } + /* If we have only one source, put it in the second * argument slot as well so that we don't take up * another raddr just to get unused data. @@ -497,38 +452,74 @@ vc4_generate_code(struct vc4_context *vc4, struct vc4_compile *c) if (qir_get_op_nsrc(qinst->op) == 1) src[1] = src[0]; - fixup_raddr_conflict(c, dst, &src[0], &src[1]); + fixup_raddr_conflict(block, dst, &src[0], &src[1], + qinst, &unpack); if (qir_is_mul(qinst)) { - queue(c, qpu_m_alu2(translate[qinst->op].op, - dst, - src[0], src[1])); - if (qinst->dst.pack) { - *last_inst(c) |= QPU_PM; - *last_inst(c) |= QPU_SET_FIELD(qinst->dst.pack, - QPU_PACK); - } + queue(block, qpu_m_alu2(translate[qinst->op].op, + dst, + src[0], src[1]) | unpack); + set_last_cond_mul(block, qinst->cond); } else { - queue(c, qpu_a_alu2(translate[qinst->op].op, - dst, - src[0], src[1])); - if (qinst->dst.pack) { - assert(dst.mux == QPU_MUX_A); - *last_inst(c) |= QPU_SET_FIELD(qinst->dst.pack, - QPU_PACK); - } + queue(block, qpu_a_alu2(translate[qinst->op].op, + dst, + src[0], src[1]) | unpack); + set_last_cond_add(block, qinst->cond); } + handled_qinst_cond = true; + set_last_dst_pack(block, qinst); break; } - if (qinst->sf) { - assert(!qir_is_multi_instruction(qinst)); - *last_inst(c) |= QPU_SF; + assert(qinst->cond == QPU_COND_ALWAYS || + handled_qinst_cond); + + if (qinst->sf) + *last_inst(block) |= QPU_SF; + } +} + +void +vc4_generate_code(struct vc4_context *vc4, struct vc4_compile *c) +{ + struct qpu_reg *temp_registers = vc4_register_allocate(vc4, c); + uint32_t inputs_remaining = c->num_inputs; + uint32_t vpm_read_fifo_count = 0; + uint32_t vpm_read_offset = 0; + struct qblock *start_block = list_first_entry(&c->blocks, + struct qblock, link); + + switch (c->stage) { + case QSTAGE_VERT: + case QSTAGE_COORD: + /* There's a 4-entry FIFO for VPMVCD reads, each of which can + * load up to 16 dwords (4 vec4s) per vertex. + */ + while (inputs_remaining) { + uint32_t num_entries = MIN2(inputs_remaining, 16); + queue(start_block, + qpu_load_imm_ui(qpu_vrsetup(), + vpm_read_offset | + 0x00001a00 | + ((num_entries & 0xf) << 20))); + inputs_remaining -= num_entries; + vpm_read_offset += num_entries; + vpm_read_fifo_count++; } + assert(vpm_read_fifo_count <= 4); + + queue(start_block, qpu_load_imm_ui(qpu_vwsetup(), 0x00001a00)); + break; + case QSTAGE_FRAG: + break; } - qpu_schedule_instructions(c); + qir_for_each_block(block, c) + vc4_generate_code_block(c, block, temp_registers); + + uint32_t cycles = qpu_schedule_instructions(c); + uint32_t inst_count_at_schedule_time = c->qpu_inst_count; /* thread end can't have VPM write or read */ if (QPU_GET_FIELD(c->qpu_insts[c->qpu_inst_count - 1], @@ -554,6 +545,14 @@ vc4_generate_code(struct vc4_context *vc4, struct vc4_compile *c) if (qpu_inst_is_tlb(c->qpu_insts[c->qpu_inst_count - 1])) qpu_serialize_one_inst(c, qpu_NOP()); + /* Make sure there's no existing signal set (like for a small + * immediate) + */ + if (QPU_GET_FIELD(c->qpu_insts[c->qpu_inst_count - 1], + QPU_SIG) != QPU_SIG_NONE) { + qpu_serialize_one_inst(c, qpu_NOP()); + } + c->qpu_insts[c->qpu_inst_count - 1] = qpu_set_sig(c->qpu_insts[c->qpu_inst_count - 1], QPU_SIG_PROG_END); @@ -571,6 +570,15 @@ vc4_generate_code(struct vc4_context *vc4, struct vc4_compile *c) break; } + cycles += c->qpu_inst_count - inst_count_at_schedule_time; + + if (vc4_debug & VC4_DEBUG_SHADERDB) { + fprintf(stderr, "SHADER-DB: %s prog %d/%d: %d estimated cycles\n", + qir_get_stage_name(c->stage), + c->program_id, c->variant_id, + cycles); + } + if (vc4_debug & VC4_DEBUG_QPU) vc4_dump_program(c);