From 22a02f3e344d6bc47e3e30949a36d00a9eae84a9 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Thu, 4 Jan 2018 15:35:28 -0800 Subject: [PATCH] broadcom/vc5: Use the new LDVPM/STVPM opcodes on V3D 4.1. Now, instead of a magic write register for VPM stores we have an instruction to do them (which means no packing of other ALU ops into it), with the ability to reorder the VPM stores due to the offset being baked into the instruction. VPM loads also gain the ability to be reordered by packing the row into the A argument. They also no longer write to the r3 accumulator, and instead must be stored to a physical register. --- src/broadcom/compiler/nir_to_vir.c | 82 ++++++++++++++++++--------- src/broadcom/compiler/qpu_schedule.c | 6 +- src/broadcom/compiler/v3d_compiler.h | 9 +-- src/broadcom/compiler/vir.c | 7 +-- src/broadcom/compiler/vir_register_allocate.c | 22 +++++++ src/broadcom/qpu/qpu_instr.c | 61 ++++++++++++++++++-- src/broadcom/qpu/qpu_instr.h | 10 +++- src/broadcom/qpu/qpu_pack.c | 47 ++++++++++++++- src/broadcom/qpu/tests/qpu_disasm.c | 4 ++ 9 files changed, 197 insertions(+), 51 deletions(-) diff --git a/src/broadcom/compiler/nir_to_vir.c b/src/broadcom/compiler/nir_to_vir.c index 208ee1b..87ce06a 100644 --- a/src/broadcom/compiler/nir_to_vir.c +++ b/src/broadcom/compiler/nir_to_vir.c @@ -29,6 +29,7 @@ #include "util/hash_table.h" #include "compiler/nir/nir.h" #include "compiler/nir/nir_builder.h" +#include "common/v3d_device_info.h" #include "v3d_compiler.h" /* We don't do any address packing. */ @@ -1224,7 +1225,21 @@ emit_frag_end(struct v3d_compile *c) } static void -emit_scaled_viewport_write(struct v3d_compile *c, struct qreg rcp_w) +vir_VPM_WRITE(struct v3d_compile *c, struct qreg val, uint32_t *vpm_index) +{ + if (c->devinfo->ver >= 40) { + vir_STVPMV(c, vir_uniform_ui(c, *vpm_index), val); + *vpm_index = *vpm_index + 1; + } else { + vir_MOV_dest(c, vir_reg(QFILE_MAGIC, V3D_QPU_WADDR_VPM), val); + } + + c->num_vpm_writes++; +} + +static void +emit_scaled_viewport_write(struct v3d_compile *c, struct qreg rcp_w, + uint32_t *vpm_index) { for (int i = 0; i < 2; i++) { struct qreg coord = c->outputs[c->output_position_index + i]; @@ -1232,34 +1247,32 @@ emit_scaled_viewport_write(struct v3d_compile *c, struct qreg rcp_w) vir_uniform(c, QUNIFORM_VIEWPORT_X_SCALE + i, 0)); coord = vir_FMUL(c, coord, rcp_w); - vir_FTOIN_dest(c, vir_reg(QFILE_MAGIC, V3D_QPU_WADDR_VPM), - coord); + vir_VPM_WRITE(c, vir_FTOIN(c, coord), vpm_index); } } static void -emit_zs_write(struct v3d_compile *c, struct qreg rcp_w) +emit_zs_write(struct v3d_compile *c, struct qreg rcp_w, uint32_t *vpm_index) { struct qreg zscale = vir_uniform(c, QUNIFORM_VIEWPORT_Z_SCALE, 0); struct qreg zoffset = vir_uniform(c, QUNIFORM_VIEWPORT_Z_OFFSET, 0); - vir_FADD_dest(c, vir_reg(QFILE_MAGIC, V3D_QPU_WADDR_VPM), - vir_FMUL(c, vir_FMUL(c, - c->outputs[c->output_position_index + 2], - zscale), - rcp_w), - zoffset); + struct qreg z = c->outputs[c->output_position_index + 2]; + z = vir_FMUL(c, z, zscale); + z = vir_FMUL(c, z, rcp_w); + z = vir_FADD(c, z, zoffset); + vir_VPM_WRITE(c, z, vpm_index); } static void -emit_rcp_wc_write(struct v3d_compile *c, struct qreg rcp_w) +emit_rcp_wc_write(struct v3d_compile *c, struct qreg rcp_w, uint32_t *vpm_index) { - vir_VPM_WRITE(c, rcp_w); + vir_VPM_WRITE(c, rcp_w, vpm_index); } static void -emit_point_size_write(struct v3d_compile *c) +emit_point_size_write(struct v3d_compile *c, uint32_t *vpm_index) { struct qreg point_size; @@ -1273,12 +1286,15 @@ emit_point_size_write(struct v3d_compile *c) */ point_size = vir_FMAX(c, point_size, vir_uniform_f(c, .125)); - vir_VPM_WRITE(c, point_size); + vir_VPM_WRITE(c, point_size, vpm_index); } static void emit_vpm_write_setup(struct v3d_compile *c) { + if (c->devinfo->ver >= 40) + return; + uint32_t packed; struct V3D33_VPM_GENERIC_BLOCK_WRITE_SETUP unpacked = { V3D33_VPM_GENERIC_BLOCK_WRITE_SETUP_header, @@ -1300,6 +1316,7 @@ emit_vpm_write_setup(struct v3d_compile *c) static void emit_vert_end(struct v3d_compile *c) { + uint32_t vpm_index = 0; struct qreg rcp_w = vir_SFU(c, V3D_QPU_WADDR_RECIP, c->outputs[c->output_position_index + 3]); @@ -1307,21 +1324,22 @@ emit_vert_end(struct v3d_compile *c) if (c->vs_key->is_coord) { for (int i = 0; i < 4; i++) - vir_VPM_WRITE(c, c->outputs[c->output_position_index + i]); - emit_scaled_viewport_write(c, rcp_w); + vir_VPM_WRITE(c, c->outputs[c->output_position_index + i], + &vpm_index); + emit_scaled_viewport_write(c, rcp_w, &vpm_index); if (c->vs_key->per_vertex_point_size) { - emit_point_size_write(c); + emit_point_size_write(c, &vpm_index); /* emit_rcp_wc_write(c, rcp_w); */ } /* XXX: Z-only rendering */ if (0) - emit_zs_write(c, rcp_w); + emit_zs_write(c, rcp_w, &vpm_index); } else { - emit_scaled_viewport_write(c, rcp_w); - emit_zs_write(c, rcp_w); - emit_rcp_wc_write(c, rcp_w); + emit_scaled_viewport_write(c, rcp_w, &vpm_index); + emit_zs_write(c, rcp_w, &vpm_index); + emit_rcp_wc_write(c, rcp_w, &vpm_index); if (c->vs_key->per_vertex_point_size) - emit_point_size_write(c); + emit_point_size_write(c, &vpm_index); } for (int i = 0; i < c->vs_key->num_fs_inputs; i++) { @@ -1332,7 +1350,8 @@ emit_vert_end(struct v3d_compile *c) struct v3d_varying_slot output = c->output_slots[j]; if (!memcmp(&input, &output, sizeof(input))) { - vir_VPM_WRITE(c, c->outputs[j]); + vir_VPM_WRITE(c, c->outputs[j], + &vpm_index); break; } } @@ -1340,7 +1359,8 @@ emit_vert_end(struct v3d_compile *c) * this FS input. */ if (j == c->num_outputs) - vir_VPM_WRITE(c, vir_uniform_f(c, 0.0)); + vir_VPM_WRITE(c, vir_uniform_f(c, 0.0), + &vpm_index); } } @@ -1384,6 +1404,12 @@ ntq_emit_vpm_read(struct v3d_compile *c, { struct qreg vpm = vir_reg(QFILE_VPM, vpm_index); + if (c->devinfo->ver >= 40 ) { + return vir_LDVPMV_IN(c, + vir_uniform_ui(c, + (*num_components_queued)++)); + } + if (*num_components_queued != 0) { (*num_components_queued)--; c->num_inputs++; @@ -1501,8 +1527,12 @@ ntq_setup_inputs(struct v3d_compile *c) } if (c->s->info.stage == MESA_SHADER_VERTEX) { - assert(vpm_components_queued == 0); - assert(num_components == 0); + if (c->devinfo->ver >= 40) { + assert(vpm_components_queued == num_components); + } else { + assert(vpm_components_queued == 0); + assert(num_components == 0); + } } } diff --git a/src/broadcom/compiler/qpu_schedule.c b/src/broadcom/compiler/qpu_schedule.c index 7fe4620..cab117b 100644 --- a/src/broadcom/compiler/qpu_schedule.c +++ b/src/broadcom/compiler/qpu_schedule.c @@ -594,6 +594,9 @@ qpu_magic_waddr_is_periph(enum v3d_qpu_waddr waddr) static bool qpu_accesses_peripheral(const struct v3d_qpu_instr *inst) { + if (v3d_qpu_uses_vpm(inst)) + return true; + if (inst->type == V3D_QPU_INSTR_TYPE_ALU) { if (inst->alu.add.op != V3D_QPU_A_NOP && inst->alu.add.magic_write && @@ -601,9 +604,6 @@ qpu_accesses_peripheral(const struct v3d_qpu_instr *inst) return true; } - if (inst->alu.add.op == V3D_QPU_A_VPMSETUP) - return true; - if (inst->alu.mul.op != V3D_QPU_M_NOP && inst->alu.mul.magic_write && qpu_magic_waddr_is_periph(inst->alu.mul.waddr)) { diff --git a/src/broadcom/compiler/v3d_compiler.h b/src/broadcom/compiler/v3d_compiler.h index 4ced588..0a6638b 100644 --- a/src/broadcom/compiler/v3d_compiler.h +++ b/src/broadcom/compiler/v3d_compiler.h @@ -791,6 +791,7 @@ VIR_A_ALU2(OR) VIR_A_ALU2(XOR) VIR_A_ALU2(VADD) VIR_A_ALU2(VSUB) +VIR_A_ALU2(STVPMV) VIR_A_ALU1(NOT) VIR_A_ALU1(NEG) VIR_A_ALU1(FLAPUSH) @@ -800,6 +801,8 @@ VIR_A_ALU1(SETMSF) VIR_A_ALU1(SETREVF) VIR_A_ALU1(TIDX) VIR_A_ALU1(EIDX) +VIR_A_ALU1(LDVPMV_IN) +VIR_A_ALU1(LDVPMV_OUT) VIR_A_ALU0(FXCD) VIR_A_ALU0(XCD) @@ -854,12 +857,6 @@ vir_SEL(struct v3d_compile *c, enum v3d_qpu_cond cond, return t; } -static inline void -vir_VPM_WRITE(struct v3d_compile *c, struct qreg val) -{ - vir_MOV_dest(c, vir_reg(QFILE_MAGIC, V3D_QPU_WADDR_VPM), val); -} - static inline struct qinst * vir_NOP(struct v3d_compile *c) { diff --git a/src/broadcom/compiler/vir.c b/src/broadcom/compiler/vir.c index c129bb0..80d11aa 100644 --- a/src/broadcom/compiler/vir.c +++ b/src/broadcom/compiler/vir.c @@ -92,6 +92,9 @@ vir_has_side_effects(struct v3d_compile *c, struct qinst *inst) case V3D_QPU_A_SETREVF: case V3D_QPU_A_SETMSF: case V3D_QPU_A_VPMSETUP: + case V3D_QPU_A_STVPMV: + case V3D_QPU_A_STVPMD: + case V3D_QPU_A_STVPMP: return true; default: break; @@ -412,10 +415,6 @@ static void vir_emit(struct v3d_compile *c, struct qinst *inst) { list_addtail(&inst->link, &c->cur_block->instructions); - - if (inst->dst.file == QFILE_MAGIC && - inst->dst.index == V3D_QPU_WADDR_VPM) - c->num_vpm_writes++; } /* Updates inst to write to a new temporary, emits it, and notes the def. */ diff --git a/src/broadcom/compiler/vir_register_allocate.c b/src/broadcom/compiler/vir_register_allocate.c index f39f0c2..0889937 100644 --- a/src/broadcom/compiler/vir_register_allocate.c +++ b/src/broadcom/compiler/vir_register_allocate.c @@ -160,6 +160,28 @@ v3d_register_allocate(struct v3d_compile *c) } } + if (inst->qpu.type == V3D_QPU_INSTR_TYPE_ALU) { + switch (inst->qpu.alu.add.op) { + case V3D_QPU_A_LDVPMV_IN: + case V3D_QPU_A_LDVPMV_OUT: + case V3D_QPU_A_LDVPMD_IN: + case V3D_QPU_A_LDVPMD_OUT: + case V3D_QPU_A_LDVPMP: + case V3D_QPU_A_LDVPMG_IN: + case V3D_QPU_A_LDVPMG_OUT: + /* LDVPMs only store to temps (the MA flag + * decides whether the LDVPM is in or out) + */ + assert(inst->dst.file == QFILE_TEMP); + class_bits[temp_to_node[inst->dst.index]] &= + CLASS_BIT_PHYS; + break; + + default: + break; + } + } + if (inst->src[0].file == QFILE_REG) { switch (inst->src[0].index) { case 0: diff --git a/src/broadcom/qpu/qpu_instr.c b/src/broadcom/qpu/qpu_instr.c index 682fee7..85d6cf7 100644 --- a/src/broadcom/qpu/qpu_instr.c +++ b/src/broadcom/qpu/qpu_instr.c @@ -113,10 +113,13 @@ v3d_qpu_add_op_name(enum v3d_qpu_add_op op) [V3D_QPU_A_TMUWT] = "tmuwt", [V3D_QPU_A_VPMSETUP] = "vpmsetup", [V3D_QPU_A_VPMWT] = "vpmwt", - [V3D_QPU_A_LDVPMV] = "ldvpmv", - [V3D_QPU_A_LDVPMD] = "ldvpmd", + [V3D_QPU_A_LDVPMV_IN] = "ldvpmv_in", + [V3D_QPU_A_LDVPMV_OUT] = "ldvpmv_out", + [V3D_QPU_A_LDVPMD_IN] = "ldvpmd_in", + [V3D_QPU_A_LDVPMD_OUT] = "ldvpmd_out", [V3D_QPU_A_LDVPMP] = "ldvpmp", - [V3D_QPU_A_LDVPMG] = "ldvpmg", + [V3D_QPU_A_LDVPMG_IN] = "ldvpmg_in", + [V3D_QPU_A_LDVPMG_OUT] = "ldvpmg_out", [V3D_QPU_A_FCMP] = "fcmp", [V3D_QPU_A_VFMAX] = "vfmax", [V3D_QPU_A_FROUND] = "fround", @@ -376,10 +379,13 @@ static const uint8_t add_op_args[] = { [V3D_QPU_A_VPMSETUP] = D | A, - [V3D_QPU_A_LDVPMV] = D | A, - [V3D_QPU_A_LDVPMD] = D | A, + [V3D_QPU_A_LDVPMV_IN] = D | A, + [V3D_QPU_A_LDVPMV_OUT] = D | A, + [V3D_QPU_A_LDVPMD_IN] = D | A, + [V3D_QPU_A_LDVPMD_OUT] = D | A, [V3D_QPU_A_LDVPMP] = D | A, - [V3D_QPU_A_LDVPMG] = D | A | B, + [V3D_QPU_A_LDVPMG_IN] = D | A | B, + [V3D_QPU_A_LDVPMG_OUT] = D | A | B, /* FIXME: MOVABSNEG */ @@ -516,6 +522,49 @@ v3d_qpu_magic_waddr_is_tsy(enum v3d_qpu_waddr waddr) waddr == V3D_QPU_WADDR_SYNCU); } +static bool +v3d_qpu_add_op_uses_vpm(enum v3d_qpu_add_op op) +{ + switch (op) { + case V3D_QPU_A_VPMSETUP: + case V3D_QPU_A_VPMWT: + case V3D_QPU_A_LDVPMV_IN: + case V3D_QPU_A_LDVPMV_OUT: + case V3D_QPU_A_LDVPMD_IN: + case V3D_QPU_A_LDVPMD_OUT: + case V3D_QPU_A_LDVPMP: + case V3D_QPU_A_LDVPMG_IN: + case V3D_QPU_A_LDVPMG_OUT: + case V3D_QPU_A_STVPMV: + case V3D_QPU_A_STVPMD: + case V3D_QPU_A_STVPMP: + return true; + default: + return false; + } +} + +bool +v3d_qpu_uses_vpm(const struct v3d_qpu_instr *inst) +{ + if (inst->type == V3D_QPU_INSTR_TYPE_ALU) { + if (v3d_qpu_add_op_uses_vpm(inst->alu.add.op)) + return true; + + if (inst->alu.add.magic_write && + v3d_qpu_magic_waddr_is_vpm(inst->alu.add.waddr)) { + return true; + } + + if (inst->alu.mul.magic_write && + v3d_qpu_magic_waddr_is_vpm(inst->alu.mul.waddr)) { + return true; + } + } + + return false; +} + bool v3d_qpu_writes_r3(const struct v3d_device_info *devinfo, const struct v3d_qpu_instr *inst) diff --git a/src/broadcom/qpu/qpu_instr.h b/src/broadcom/qpu/qpu_instr.h index 468fe89f..0bd79ca 100644 --- a/src/broadcom/qpu/qpu_instr.h +++ b/src/broadcom/qpu/qpu_instr.h @@ -173,10 +173,13 @@ enum v3d_qpu_add_op { V3D_QPU_A_TMUWT, V3D_QPU_A_VPMSETUP, V3D_QPU_A_VPMWT, - V3D_QPU_A_LDVPMV, - V3D_QPU_A_LDVPMD, + V3D_QPU_A_LDVPMV_IN, + V3D_QPU_A_LDVPMV_OUT, + V3D_QPU_A_LDVPMD_IN, + V3D_QPU_A_LDVPMD_OUT, V3D_QPU_A_LDVPMP, - V3D_QPU_A_LDVPMG, + V3D_QPU_A_LDVPMG_IN, + V3D_QPU_A_LDVPMG_OUT, V3D_QPU_A_FCMP, V3D_QPU_A_VFMAX, V3D_QPU_A_FROUND, @@ -425,6 +428,7 @@ bool v3d_qpu_writes_r4(const struct v3d_device_info *devinfo, bool v3d_qpu_writes_r5(const struct v3d_device_info *devinfo, const struct v3d_qpu_instr *instr) ATTRIBUTE_CONST; bool v3d_qpu_uses_mux(const struct v3d_qpu_instr *inst, enum v3d_qpu_mux mux); +bool v3d_qpu_uses_vpm(const struct v3d_qpu_instr *inst); bool v3d_qpu_sig_writes_address(const struct v3d_device_info *devinfo, const struct v3d_qpu_sig *sig) ATTRIBUTE_CONST; diff --git a/src/broadcom/qpu/qpu_pack.c b/src/broadcom/qpu/qpu_pack.c index 161e24f..ffabc9a 100644 --- a/src/broadcom/qpu/qpu_pack.c +++ b/src/broadcom/qpu/qpu_pack.c @@ -515,7 +515,11 @@ static const struct opcode_desc add_ops[] = { { 187, 187, 1 << 2, 1 << 5, V3D_QPU_A_TMUWT }, { 187, 187, 1 << 2, 1 << 6, V3D_QPU_A_VPMWT }, - { 187, 187, 1 << 3, ANYMUX, V3D_QPU_A_VPMSETUP }, + { 187, 187, 1 << 3, ANYMUX, V3D_QPU_A_VPMSETUP, 33 }, + { 188, 188, 1 << 0, ANYMUX, V3D_QPU_A_LDVPMV_IN, 40 }, + { 188, 188, 1 << 1, ANYMUX, V3D_QPU_A_LDVPMD_IN, 40 }, + { 188, 188, 1 << 2, ANYMUX, V3D_QPU_A_LDVPMP, 40 }, + { 189, 189, ANYMUX, ANYMUX, V3D_QPU_A_LDVPMG_IN, 40 }, /* FIXME: MORE COMPLICATED */ /* { 190, 191, ANYMUX, ANYMUX, V3D_QPU_A_VFMOVABSNEGNAB }, */ @@ -823,7 +827,24 @@ v3d_qpu_add_unpack(const struct v3d_device_info *devinfo, uint64_t packed_inst, instr->alu.add.a = mux_a; instr->alu.add.b = mux_b; instr->alu.add.waddr = QPU_GET_FIELD(packed_inst, V3D_QPU_WADDR_A); - instr->alu.add.magic_write = packed_inst & VC5_QPU_MA; + + instr->alu.add.magic_write = false; + if (packed_inst & VC5_QPU_MA) { + switch (instr->alu.add.op) { + case V3D_QPU_A_LDVPMV_IN: + instr->alu.add.op = V3D_QPU_A_LDVPMV_OUT; + break; + case V3D_QPU_A_LDVPMD_IN: + instr->alu.add.op = V3D_QPU_A_LDVPMD_OUT; + break; + case V3D_QPU_A_LDVPMG_IN: + instr->alu.add.op = V3D_QPU_A_LDVPMG_OUT; + break; + default: + instr->alu.add.magic_write = true; + break; + } + } return true; } @@ -930,16 +951,36 @@ v3d_qpu_add_pack(const struct v3d_device_info *devinfo, if (nsrc < 1) mux_a = ffs(desc->mux_a_mask) - 1; + bool no_magic_write = false; + switch (instr->alu.add.op) { case V3D_QPU_A_STVPMV: waddr = 0; + no_magic_write = true; break; case V3D_QPU_A_STVPMD: waddr = 1; + no_magic_write = true; break; case V3D_QPU_A_STVPMP: waddr = 2; + no_magic_write = true; + break; + + case V3D_QPU_A_LDVPMV_IN: + case V3D_QPU_A_LDVPMD_IN: + case V3D_QPU_A_LDVPMP: + case V3D_QPU_A_LDVPMG_IN: + assert(!instr->alu.add.magic_write); break; + + case V3D_QPU_A_LDVPMV_OUT: + case V3D_QPU_A_LDVPMD_OUT: + case V3D_QPU_A_LDVPMG_OUT: + assert(!instr->alu.add.magic_write); + *packed_instr |= VC5_QPU_MA; + break; + default: break; } @@ -1065,7 +1106,7 @@ v3d_qpu_add_pack(const struct v3d_device_info *devinfo, *packed_instr |= QPU_SET_FIELD(mux_b, VC5_QPU_ADD_B); *packed_instr |= QPU_SET_FIELD(opcode, VC5_QPU_OP_ADD); *packed_instr |= QPU_SET_FIELD(waddr, V3D_QPU_WADDR_A); - if (instr->alu.add.magic_write) + if (instr->alu.add.magic_write && !no_magic_write) *packed_instr |= VC5_QPU_MA; return true; diff --git a/src/broadcom/qpu/tests/qpu_disasm.c b/src/broadcom/qpu/tests/qpu_disasm.c index 27dc184..8d77740 100644 --- a/src/broadcom/qpu/tests/qpu_disasm.c +++ b/src/broadcom/qpu/tests/qpu_disasm.c @@ -76,6 +76,10 @@ static const struct { { 41, 0xdb3048eb9d533780ull, "fmax rf43.l, r3.h, rf30; fmul rf35.h, r4, r2.l; ldunifarf.r1" }, { 41, 0x733620471e6ce700ull, "faddnf rf7.l, rf28.h, r1.l; fmul r1, r3.h, r3.abs; ldunifarf.rsqrt2" }, { 41, 0x9c094adef634b000ull, "ffloor.ifb rf30.l, r3; fmul.pushz rf43.l, r5, r1.h" }, + + /* v4.1 opcodes */ + { 41, 0x3de020c7bdfd200dull, "ldvpmg_in rf7, r2, r2; mov r3, 13" }, + { 41, 0x3de02040f8ff7201ull, "stvpmv 1, rf8 ; mov r1, 1" }, }; static void -- 2.7.4