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Diffstat (limited to 'src/broadcom/compiler/nir_to_vir.c')
-rw-r--r--src/broadcom/compiler/nir_to_vir.c205
1 files changed, 120 insertions, 85 deletions
diff --git a/src/broadcom/compiler/nir_to_vir.c b/src/broadcom/compiler/nir_to_vir.c
index 3857f96a9bd..92252b03218 100644
--- a/src/broadcom/compiler/nir_to_vir.c
+++ b/src/broadcom/compiler/nir_to_vir.c
@@ -229,19 +229,19 @@ ntq_emit_tmu_general(struct v3d_compile *c, nir_intrinsic_instr *instr,
if (!dynamic_src)
const_offset = nir_src_as_uint(instr->src[offset_src]);
- struct qreg offset;
+ struct qreg base_offset;
if (instr->intrinsic == nir_intrinsic_load_uniform) {
const_offset += nir_intrinsic_base(instr);
- offset = vir_uniform(c, QUNIFORM_UBO_ADDR,
- v3d_unit_data_create(0, const_offset));
+ base_offset = vir_uniform(c, QUNIFORM_UBO_ADDR,
+ v3d_unit_data_create(0, const_offset));
const_offset = 0;
} else if (instr->intrinsic == nir_intrinsic_load_ubo) {
uint32_t index = nir_src_as_uint(instr->src[0]) + 1;
/* Note that QUNIFORM_UBO_ADDR takes a UBO index shifted up by
* 1 (0 is gallium's constant buffer 0).
*/
- offset = vir_uniform(c, QUNIFORM_UBO_ADDR,
- v3d_unit_data_create(index, const_offset));
+ base_offset = vir_uniform(c, QUNIFORM_UBO_ADDR,
+ v3d_unit_data_create(index, const_offset));
const_offset = 0;
} else if (is_shared_or_scratch) {
/* Shared and scratch variables have no buffer index, and all
@@ -250,109 +250,144 @@ ntq_emit_tmu_general(struct v3d_compile *c, nir_intrinsic_instr *instr,
*/
if (instr->intrinsic == nir_intrinsic_load_scratch ||
instr->intrinsic == nir_intrinsic_store_scratch) {
- offset = c->spill_base;
+ base_offset = c->spill_base;
} else {
- offset = c->cs_shared_offset;
+ base_offset = c->cs_shared_offset;
const_offset += nir_intrinsic_base(instr);
}
} else {
- offset = vir_uniform(c, QUNIFORM_SSBO_OFFSET,
- nir_src_as_uint(instr->src[is_store ?
- 1 : 0]));
+ base_offset = vir_uniform(c, QUNIFORM_SSBO_OFFSET,
+ nir_src_as_uint(instr->src[is_store ?
+ 1 : 0]));
}
- int tmu_writes = 1; /* address */
- if (is_store) {
- for (int i = 0; i < instr->num_components; i++) {
- vir_MOV_dest(c,
- vir_reg(QFILE_MAGIC, V3D_QPU_WADDR_TMUD),
- ntq_get_src(c, instr->src[0], i));
- tmu_writes++;
- }
- } else if (!is_load && !atomic_add_replaced) {
- vir_MOV_dest(c,
- vir_reg(QFILE_MAGIC, V3D_QPU_WADDR_TMUD),
- ntq_get_src(c, instr->src[1 + has_index], 0));
- tmu_writes++;
- if (tmu_op == V3D_TMU_OP_WRITE_CMPXCHG_READ_FLUSH) {
+ unsigned writemask = is_store ? nir_intrinsic_write_mask(instr) : 0;
+ uint32_t base_const_offset = const_offset;
+ int first_component = -1;
+ int last_component = -1;
+ do {
+ int tmu_writes = 1; /* address */
+
+ if (is_store) {
+ /* Find the first set of consecutive components that
+ * are enabled in the writemask and emit the TMUD
+ * instructions for them.
+ */
+ first_component = ffs(writemask) - 1;
+ last_component = first_component;
+ while (writemask & BITFIELD_BIT(last_component + 1))
+ last_component++;
+
+ assert(first_component >= 0 &&
+ first_component <= last_component &&
+ last_component < instr->num_components);
+
+ struct qreg tmud = vir_reg(QFILE_MAGIC,
+ V3D_QPU_WADDR_TMUD);
+ for (int i = first_component; i <= last_component; i++) {
+ struct qreg data =
+ ntq_get_src(c, instr->src[0], i);
+ vir_MOV_dest(c, tmud, data);
+ tmu_writes++;
+ }
+
+ /* Update the offset for the TMU write based on the
+ * the first component we are writing.
+ */
+ const_offset = base_const_offset + first_component * 4;
+
+ /* Clear these components from the writemask */
+ uint32_t written_mask =
+ BITFIELD_RANGE(first_component, tmu_writes - 1);
+ writemask &= ~written_mask;
+ } else if (!is_load && !atomic_add_replaced) {
vir_MOV_dest(c,
vir_reg(QFILE_MAGIC, V3D_QPU_WADDR_TMUD),
- ntq_get_src(c, instr->src[2 + has_index],
- 0));
+ ntq_get_src(c, instr->src[1 + has_index], 0));
tmu_writes++;
+ if (tmu_op == V3D_TMU_OP_WRITE_CMPXCHG_READ_FLUSH) {
+ vir_MOV_dest(c,
+ vir_reg(QFILE_MAGIC, V3D_QPU_WADDR_TMUD),
+ ntq_get_src(c, instr->src[2 + has_index],
+ 0));
+ tmu_writes++;
+ }
}
- }
-
- /* Make sure we won't exceed the 16-entry TMU fifo if each thread is
- * storing at the same time.
- */
- while (tmu_writes > 16 / c->threads)
- c->threads /= 2;
- /* The spec says that for atomics, the TYPE field is ignored, but that
- * doesn't seem to be the case for CMPXCHG. Just use the number of
- * tmud writes we did to decide the type (or choose "32bit" for atomic
- * reads, which has been fine).
- */
- int num_components;
- if (tmu_op == V3D_TMU_OP_WRITE_CMPXCHG_READ_FLUSH)
- num_components = 2;
- else
- num_components = instr->num_components;
-
- uint32_t config = (0xffffff00 |
- tmu_op << 3|
- GENERAL_TMU_LOOKUP_PER_PIXEL);
- if (num_components == 1) {
- config |= GENERAL_TMU_LOOKUP_TYPE_32BIT_UI;
- } else {
- config |= GENERAL_TMU_LOOKUP_TYPE_VEC2 + num_components - 2;
- }
+ /* Make sure we won't exceed the 16-entry TMU fifo if each thread is
+ * storing at the same time.
+ */
+ while (tmu_writes > 16 / c->threads)
+ c->threads /= 2;
- if (vir_in_nonuniform_control_flow(c)) {
- vir_set_pf(vir_MOV_dest(c, vir_nop_reg(), c->execute),
- V3D_QPU_PF_PUSHZ);
- }
+ /* The spec says that for atomics, the TYPE field is ignored, but that
+ * doesn't seem to be the case for CMPXCHG. Just use the number of
+ * tmud writes we did to decide the type (or choose "32bit" for atomic
+ * reads, which has been fine).
+ */
+ uint32_t num_components;
+ if (is_load || atomic_add_replaced) {
+ num_components = instr->num_components;
+ } else {
+ assert(tmu_writes > 1);
+ num_components = tmu_writes - 1;
+ }
- struct qreg tmua;
- if (config == ~0)
- tmua = vir_reg(QFILE_MAGIC, V3D_QPU_WADDR_TMUA);
- else
- tmua = vir_reg(QFILE_MAGIC, V3D_QPU_WADDR_TMUAU);
+ uint32_t config = (0xffffff00 |
+ tmu_op << 3|
+ GENERAL_TMU_LOOKUP_PER_PIXEL);
+ if (num_components == 1) {
+ config |= GENERAL_TMU_LOOKUP_TYPE_32BIT_UI;
+ } else {
+ config |= GENERAL_TMU_LOOKUP_TYPE_VEC2 + num_components - 2;
+ }
- struct qinst *tmu;
- if (dynamic_src) {
- if (const_offset != 0) {
- offset = vir_ADD(c, offset,
- vir_uniform_ui(c, const_offset));
+ if (vir_in_nonuniform_control_flow(c)) {
+ vir_set_pf(vir_MOV_dest(c, vir_nop_reg(), c->execute),
+ V3D_QPU_PF_PUSHZ);
}
- tmu = vir_ADD_dest(c, tmua, offset,
- ntq_get_src(c, instr->src[offset_src], 0));
- } else {
- if (const_offset != 0) {
+
+ struct qreg tmua;
+ if (config == ~0)
+ tmua = vir_reg(QFILE_MAGIC, V3D_QPU_WADDR_TMUA);
+ else
+ tmua = vir_reg(QFILE_MAGIC, V3D_QPU_WADDR_TMUAU);
+
+ struct qinst *tmu;
+ if (dynamic_src) {
+ struct qreg offset = base_offset;
+ if (const_offset != 0) {
+ offset = vir_ADD(c, offset,
+ vir_uniform_ui(c, const_offset));
+ }
tmu = vir_ADD_dest(c, tmua, offset,
- vir_uniform_ui(c, const_offset));
+ ntq_get_src(c, instr->src[offset_src], 0));
} else {
- tmu = vir_MOV_dest(c, tmua, offset);
+ if (const_offset != 0) {
+ tmu = vir_ADD_dest(c, tmua, base_offset,
+ vir_uniform_ui(c, const_offset));
+ } else {
+ tmu = vir_MOV_dest(c, tmua, base_offset);
+ }
}
- }
- if (config != ~0) {
- tmu->uniform = vir_get_uniform_index(c, QUNIFORM_CONSTANT,
- config);
- }
+ if (config != ~0) {
+ tmu->uniform = vir_get_uniform_index(c, QUNIFORM_CONSTANT,
+ config);
+ }
- if (vir_in_nonuniform_control_flow(c))
- vir_set_cond(tmu, V3D_QPU_COND_IFA);
+ if (vir_in_nonuniform_control_flow(c))
+ vir_set_cond(tmu, V3D_QPU_COND_IFA);
- vir_emit_thrsw(c);
+ vir_emit_thrsw(c);
- /* Read the result, or wait for the TMU op to complete. */
- for (int i = 0; i < nir_intrinsic_dest_components(instr); i++)
- ntq_store_dest(c, &instr->dest, i, vir_MOV(c, vir_LDTMU(c)));
+ /* Read the result, or wait for the TMU op to complete. */
+ for (int i = 0; i < nir_intrinsic_dest_components(instr); i++)
+ ntq_store_dest(c, &instr->dest, i, vir_MOV(c, vir_LDTMU(c)));
- if (nir_intrinsic_dest_components(instr) == 0)
- vir_TMUWT(c);
+ if (nir_intrinsic_dest_components(instr) == 0)
+ vir_TMUWT(c);
+ } while (is_store && writemask != 0);
}
static struct qreg *
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 10:25:11 +0000