r600g: drop compiler stuff and switch over dumb tgsi assembler

Writing a compiler is time consuming and error prone in
order to allow r600g to further progress in the meantime
i wrote a simple tgsi assembler, it does stupid thing but
i would rather keep the code simple than having people
trying to optimize code it does.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>

1 files changed, 385 insertions, 0 deletions

diff --git a/src/gallium/drivers/r600/r600_asm.c b/src/gallium/drivers/r600/r600_asm.c
new file mode 100644
index 0000000000..6e48703a57
--- /dev/null
+++ b/src/gallium/drivers/r600/r600_asm.c
@@ -0,0 +1,385 @@
+/*
+ * Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "r600_asm.h"
+#include "r600_context.h"
+#include "util/u_memory.h"
+#include "r600_sq.h"
+#include <stdio.h>
+#include <errno.h>
+
+int r700_bc_alu_build(struct r600_bc *bc, struct r600_bc_alu *alu, unsigned id);
+
+static struct r600_bc_cf *r600_bc_cf(void)
+{
+	struct r600_bc_cf *cf = CALLOC_STRUCT(r600_bc_cf);
+
+	if (cf == NULL)
+		return NULL;
+	LIST_INITHEAD(&cf->list);
+	LIST_INITHEAD(&cf->alu);
+	LIST_INITHEAD(&cf->vtx);
+	return cf;
+}
+
+static struct r600_bc_alu *r600_bc_alu(void)
+{
+	struct r600_bc_alu *alu = CALLOC_STRUCT(r600_bc_alu);
+
+	if (alu == NULL)
+		return NULL;
+	LIST_INITHEAD(&alu->list);
+	return alu;
+}
+
+static struct r600_bc_vtx *r600_bc_vtx(void)
+{
+	struct r600_bc_vtx *vtx = CALLOC_STRUCT(r600_bc_vtx);
+
+	if (vtx == NULL)
+		return NULL;
+	LIST_INITHEAD(&vtx->list);
+	return vtx;
+}
+
+int r600_bc_init(struct r600_bc *bc, enum radeon_family family)
+{
+	LIST_INITHEAD(&bc->cf);
+	bc->family = family;
+	return 0;
+}
+
+static int r600_bc_add_cf(struct r600_bc *bc)
+{
+	struct r600_bc_cf *cf = r600_bc_cf();
+
+	if (cf == NULL)
+		return -ENOMEM;
+	LIST_ADDTAIL(&cf->list, &bc->cf);
+	if (bc->cf_last)
+		cf->id = bc->cf_last->id + 2;
+	bc->cf_last = cf;
+	bc->ncf++;
+	bc->ndw += 2;
+	return 0;
+}
+
+int r600_bc_add_output(struct r600_bc *bc, const struct r600_bc_output *output)
+{
+	int r;
+
+	r = r600_bc_add_cf(bc);
+	if (r)
+		return r;
+	bc->cf_last->inst = output->inst;
+	memcpy(&bc->cf_last->output, output, sizeof(struct r600_bc_output));
+	return 0;
+}
+
+int r600_bc_add_alu(struct r600_bc *bc, const struct r600_bc_alu *alu)
+{
+	struct r600_bc_alu *nalu = r600_bc_alu();
+	struct r600_bc_alu *lalu;
+	int i, r;
+
+	if (nalu == NULL)
+		return -ENOMEM;
+	memcpy(nalu, alu, sizeof(struct r600_bc_alu));
+	nalu->nliteral = 0;
+
+	/* cf can contains only alu or only vtx or only tex */
+	if (bc->cf_last == NULL || bc->cf_last->inst != (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU << 3)) {
+		r = r600_bc_add_cf(bc);
+		if (r) {
+			free(nalu);
+			return r;
+		}
+		bc->cf_last->inst = V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU << 3;
+	}
+	/* number of gpr == the last gpr used in any alu */
+	for (i = 0; i < 3; i++) {
+		if (alu->src[i].sel >= bc->ngpr && alu->src[i].sel < 128) {
+			bc->ngpr = alu->src[i].sel + 1;
+		}
+		/* compute how many literal are needed
+		 * either 2 or 4 literals
+		 */
+		if (alu->src[i].sel == 253) {
+			if (((alu->src[i].chan + 2) & 0x6) > nalu->nliteral) {
+				nalu->nliteral = (alu->src[i].chan + 2) & 0x6;
+			}
+		}
+	}
+	if (!LIST_IS_EMPTY(&bc->cf_last->alu)) {
+		lalu = LIST_ENTRY(struct r600_bc_alu, bc->cf_last->alu.prev, list);
+		if (!lalu->last && lalu->nliteral > nalu->nliteral) {
+			nalu->nliteral = lalu->nliteral;
+		}
+	}
+	if (alu->dst.sel >= bc->ngpr) {
+		bc->ngpr = alu->dst.sel + 1;
+	}
+	LIST_ADDTAIL(&nalu->list, &bc->cf_last->alu);
+	/* each alu use 2 dwords */
+	bc->cf_last->ndw += 2;
+	bc->ndw += 2;
+	return 0;
+}
+
+int r600_bc_add_literal(struct r600_bc *bc, const u32 *value)
+{
+	struct r600_bc_alu *alu;
+
+	if (bc->cf_last == NULL ||
+		bc->cf_last->inst != (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU << 3) ||
+		LIST_IS_EMPTY(&bc->cf_last->alu)) {
+		R600_ERR("last CF is not ALU (%p)\n", bc->cf_last);
+		return -EINVAL;
+	}
+	alu = LIST_ENTRY(struct r600_bc_alu, bc->cf_last->alu.prev, list);
+	if (!alu->last || !alu->nliteral) {
+		return 0;
+	}
+	memcpy(alu->value, value, 4 * 4);
+	bc->cf_last->ndw += alu->nliteral;
+	bc->ndw += alu->nliteral;
+	return 0;
+}
+
+int r600_bc_add_vtx(struct r600_bc *bc, const struct r600_bc_vtx *vtx)
+{
+	struct r600_bc_vtx *nvtx = r600_bc_vtx();
+	int r;
+
+	if (nvtx == NULL)
+		return -ENOMEM;
+	memcpy(nvtx, vtx, sizeof(struct r600_bc_vtx));
+
+	/* cf can contains only alu or only vtx or only tex */
+	if (bc->cf_last == NULL ||
+		(bc->cf_last->inst != V_SQ_CF_WORD1_SQ_CF_INST_VTX &&
+		 bc->cf_last->inst != V_SQ_CF_WORD1_SQ_CF_INST_VTX_TC)) {
+		r = r600_bc_add_cf(bc);
+		if (r) {
+			free(nvtx);
+			return r;
+		}
+		bc->cf_last->inst = V_SQ_CF_WORD1_SQ_CF_INST_VTX;
+	}
+	LIST_ADDTAIL(&nvtx->list, &bc->cf_last->vtx);
+	/* each fetch use 6 dwords */
+	bc->cf_last->ndw += 4;
+	bc->ndw += 4;
+	return 0;
+}
+
+int r600_bc_vtx_build(struct r600_bc *bc, struct r600_bc_vtx *vtx, unsigned id)
+{
+	bc->bytecode[id++] = S_SQ_VTX_WORD0_BUFFER_ID(vtx->buffer_id) |
+				S_SQ_VTX_WORD0_SRC_GPR(vtx->src_gpr) |
+				S_SQ_VTX_WORD0_SRC_SEL_X(vtx->src_sel_x) |
+				S_SQ_VTX_WORD0_MEGA_FETCH_COUNT(vtx->mega_fetch_count);
+	bc->bytecode[id++] = S_SQ_VTX_WORD1_DST_SEL_X(vtx->dst_sel_x) |
+				S_SQ_VTX_WORD1_DST_SEL_Y(vtx->dst_sel_y) |
+				S_SQ_VTX_WORD1_DST_SEL_Z(vtx->dst_sel_z) |
+				S_SQ_VTX_WORD1_DST_SEL_W(vtx->dst_sel_w) |
+				S_SQ_VTX_WORD1_USE_CONST_FIELDS(1) |
+				S_SQ_VTX_WORD1_GPR_DST_GPR(vtx->dst_gpr);
+	bc->bytecode[id++] = S_SQ_VTX_WORD2_MEGA_FETCH(1);
+	bc->bytecode[id++] = 0;
+	return 0;
+}
+
+int r600_bc_alu_build(struct r600_bc *bc, struct r600_bc_alu *alu, unsigned id)
+{
+	unsigned i;
+
+	/* don't replace gpr by pv or ps for destination register */
+	if (alu->is_op3) {
+		bc->bytecode[id++] = S_SQ_ALU_WORD0_SRC0_SEL(alu->src[0].sel) |
+					S_SQ_ALU_WORD0_SRC0_CHAN(alu->src[0].chan) |
+					S_SQ_ALU_WORD0_SRC1_SEL(alu->src[1].sel) |
+					S_SQ_ALU_WORD0_SRC1_CHAN(alu->src[1].chan) |
+					S_SQ_ALU_WORD0_LAST(alu->last);
+		bc->bytecode[id++] = S_SQ_ALU_WORD1_DST_GPR(alu->dst.sel) |
+					S_SQ_ALU_WORD1_DST_CHAN(alu->dst.chan) |
+					S_SQ_ALU_WORD1_OP3_SRC2_SEL(alu->src[2].sel) |
+					S_SQ_ALU_WORD1_OP3_SRC2_CHAN(alu->src[2].chan) |
+					S_SQ_ALU_WORD1_OP3_SRC2_NEG(alu->src[2].neg) |
+					S_SQ_ALU_WORD1_OP3_ALU_INST(alu->inst) |
+					S_SQ_ALU_WORD1_BANK_SWIZZLE(0);
+	} else {
+		bc->bytecode[id++] = S_SQ_ALU_WORD0_SRC0_SEL(alu->src[0].sel) |
+					S_SQ_ALU_WORD0_SRC0_CHAN(alu->src[0].chan) |
+					S_SQ_ALU_WORD0_SRC0_NEG(alu->src[0].neg) |
+					S_SQ_ALU_WORD0_SRC1_SEL(alu->src[1].sel) |
+					S_SQ_ALU_WORD0_SRC1_CHAN(alu->src[1].chan) |
+					S_SQ_ALU_WORD0_SRC1_NEG(alu->src[1].neg) |
+					S_SQ_ALU_WORD0_LAST(alu->last);
+		bc->bytecode[id++] = S_SQ_ALU_WORD1_DST_GPR(alu->dst.sel) |
+					S_SQ_ALU_WORD1_DST_CHAN(alu->dst.chan) |
+					S_SQ_ALU_WORD1_OP2_SRC0_ABS(alu->src[0].abs) |
+					S_SQ_ALU_WORD1_OP2_SRC1_ABS(alu->src[1].abs) |
+					S_SQ_ALU_WORD1_OP2_WRITE_MASK(alu->dst.write) |
+					S_SQ_ALU_WORD1_OP2_ALU_INST(alu->inst) |
+					S_SQ_ALU_WORD1_BANK_SWIZZLE(0);
+	}
+	if (alu->last) {
+		for (i = 0; i < alu->nliteral; i++) {
+			bc->bytecode[id++] = alu->value[i];
+		}
+	}
+	return 0;
+}
+
+int r600_bc_cf_build(struct r600_bc *bc, struct r600_bc_cf *cf)
+{
+	unsigned id = cf->id;
+
+	switch (cf->inst) {
+	case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU << 3):
+		bc->bytecode[id++] = S_SQ_CF_ALU_WORD0_ADDR(cf->addr >> 1);
+		bc->bytecode[id++] = S_SQ_CF_ALU_WORD1_CF_INST(cf->inst >> 3) |
+					S_SQ_CF_ALU_WORD1_BARRIER(1) |
+					S_SQ_CF_ALU_WORD1_COUNT((cf->ndw / 2) - 1);
+		break;
+	case V_SQ_CF_WORD1_SQ_CF_INST_VTX:
+	case V_SQ_CF_WORD1_SQ_CF_INST_VTX_TC:
+		bc->bytecode[id++] = S_SQ_CF_WORD0_ADDR(cf->addr >> 1);
+		bc->bytecode[id++] = S_SQ_CF_WORD1_CF_INST(cf->inst) |
+					S_SQ_CF_WORD1_BARRIER(1) |
+					S_SQ_CF_WORD1_COUNT((cf->ndw / 4) - 1);
+		break;
+	case V_SQ_CF_ALLOC_EXPORT_WORD1_SQ_CF_INST_EXPORT:
+	case V_SQ_CF_ALLOC_EXPORT_WORD1_SQ_CF_INST_EXPORT_DONE:
+		bc->bytecode[id++] = S_SQ_CF_ALLOC_EXPORT_WORD0_RW_GPR(cf->output.gpr) |
+			S_SQ_CF_ALLOC_EXPORT_WORD0_ELEM_SIZE(cf->output.elem_size) |
+			S_SQ_CF_ALLOC_EXPORT_WORD0_ARRAY_BASE(cf->output.array_base) |
+			S_SQ_CF_ALLOC_EXPORT_WORD0_TYPE(cf->output.type);
+		bc->bytecode[id++] = S_SQ_CF_ALLOC_EXPORT_WORD1_SWIZ_SEL_X(cf->output.swizzle_x) |
+			S_SQ_CF_ALLOC_EXPORT_WORD1_SWIZ_SEL_Y(cf->output.swizzle_y) |
+			S_SQ_CF_ALLOC_EXPORT_WORD1_SWIZ_SEL_Z(cf->output.swizzle_z) |
+			S_SQ_CF_ALLOC_EXPORT_WORD1_SWIZ_SEL_W(cf->output.swizzle_w) |
+			S_SQ_CF_ALLOC_EXPORT_WORD1_BARRIER(cf->output.barrier) |
+			S_SQ_CF_ALLOC_EXPORT_WORD1_CF_INST(cf->output.inst) |
+			S_SQ_CF_ALLOC_EXPORT_WORD1_END_OF_PROGRAM(cf->output.end_of_program);
+		break;
+	default:
+		R600_ERR("unsupported CF instruction (0x%X)\n", cf->inst);
+		return -EINVAL;
+	}
+	return 0;
+}
+
+int r600_bc_build(struct r600_bc *bc)
+{
+	struct r600_bc_cf *cf;
+	struct r600_bc_alu *alu;
+	struct r600_bc_vtx *vtx;
+	unsigned addr;
+	int r;
+
+
+	/* first path compute addr of each CF block */
+	/* addr start after all the CF instructions */
+	addr = bc->cf_last->id + 2;
+	LIST_FOR_EACH_ENTRY(cf, &bc->cf, list) {
+		switch (cf->inst) {
+		case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU << 3):
+			break;
+		case V_SQ_CF_WORD1_SQ_CF_INST_VTX:
+		case V_SQ_CF_WORD1_SQ_CF_INST_VTX_TC:
+			/* fetch node need to be 16 bytes aligned*/
+			addr += 3;
+			addr &= 0xFFFFFFFCUL;
+			break;
+		case V_SQ_CF_ALLOC_EXPORT_WORD1_SQ_CF_INST_EXPORT:
+		case V_SQ_CF_ALLOC_EXPORT_WORD1_SQ_CF_INST_EXPORT_DONE:
+			break;
+		default:
+			R600_ERR("unsupported CF instruction (0x%X)\n", cf->inst);
+			return -EINVAL;
+		}
+		cf->addr = addr;
+		addr += cf->ndw;
+		bc->ndw = cf->addr + cf->ndw;
+	}
+	free(bc->bytecode);
+	bc->bytecode = calloc(1, bc->ndw * 4);
+	if (bc->bytecode == NULL)
+		return -ENOMEM;
+	LIST_FOR_EACH_ENTRY(cf, &bc->cf, list) {
+		addr = cf->addr;
+		r = r600_bc_cf_build(bc, cf);
+		if (r)
+			return r;
+		switch (cf->inst) {
+		case (V_SQ_CF_ALU_WORD1_SQ_CF_INST_ALU << 3):
+			LIST_FOR_EACH_ENTRY(alu, &cf->alu, list) {
+				switch (bc->family) {
+				case CHIP_R600:
+				case CHIP_RV610:
+				case CHIP_RV630:
+				case CHIP_RV670:
+				case CHIP_RV620:
+				case CHIP_RV635:
+				case CHIP_RS780:
+				case CHIP_RS880:
+					r = r600_bc_alu_build(bc, alu, addr);
+					break;
+				case CHIP_RV770:
+				case CHIP_RV730:
+				case CHIP_RV710:
+				case CHIP_RV740:
+					r = r700_bc_alu_build(bc, alu, addr);
+					break;
+				default:
+					R600_ERR("unknown family %d\n", bc->family);
+					return -EINVAL;
+				}
+				if (r)
+					return r;
+				addr += 2;
+				if (alu->last) {
+					addr += alu->nliteral;
+				}
+			}
+			break;
+		case V_SQ_CF_WORD1_SQ_CF_INST_VTX:
+		case V_SQ_CF_WORD1_SQ_CF_INST_VTX_TC:
+			LIST_FOR_EACH_ENTRY(vtx, &cf->vtx, list) {
+				r = r600_bc_vtx_build(bc, vtx, addr);
+				if (r)
+					return r;
+				addr += 4;
+			}
+			break;
+		case V_SQ_CF_ALLOC_EXPORT_WORD1_SQ_CF_INST_EXPORT:
+		case V_SQ_CF_ALLOC_EXPORT_WORD1_SQ_CF_INST_EXPORT_DONE:
+			break;
+		default:
+			R600_ERR("unsupported CF instruction (0x%X)\n", cf->inst);
+			return -EINVAL;
+		}
+	}
+	return 0;
+}