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1 /*
2  * Copyright 2012 Advanced Micro Devices, Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * on the rights to use, copy, modify, merge, publish, distribute, sub
8  * license, and/or sell copies of the Software, and to permit persons to whom
9  * the Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice (including the next
12  * paragraph) shall be included in all copies or substantial portions of the
13  * Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
22  */
23 
24 #include "radeon/r600_cs.h"
25 #include "util/u_memory.h"
26 #include "si_pipe.h"
27 #include "sid.h"
28 
si_pm4_cmd_begin(struct si_pm4_state * state,unsigned opcode)29 void si_pm4_cmd_begin(struct si_pm4_state *state, unsigned opcode)
30 {
31 	state->last_opcode = opcode;
32 	state->last_pm4 = state->ndw++;
33 }
34 
si_pm4_cmd_add(struct si_pm4_state * state,uint32_t dw)35 void si_pm4_cmd_add(struct si_pm4_state *state, uint32_t dw)
36 {
37 	state->pm4[state->ndw++] = dw;
38 }
39 
si_pm4_cmd_end(struct si_pm4_state * state,bool predicate)40 void si_pm4_cmd_end(struct si_pm4_state *state, bool predicate)
41 {
42 	unsigned count;
43 	count = state->ndw - state->last_pm4 - 2;
44 	state->pm4[state->last_pm4] =
45 		PKT3(state->last_opcode, count, predicate);
46 
47 	assert(state->ndw <= SI_PM4_MAX_DW);
48 }
49 
si_pm4_set_reg(struct si_pm4_state * state,unsigned reg,uint32_t val)50 void si_pm4_set_reg(struct si_pm4_state *state, unsigned reg, uint32_t val)
51 {
52 	unsigned opcode;
53 
54 	if (reg >= SI_CONFIG_REG_OFFSET && reg < SI_CONFIG_REG_END) {
55 		opcode = PKT3_SET_CONFIG_REG;
56 		reg -= SI_CONFIG_REG_OFFSET;
57 
58 	} else if (reg >= SI_SH_REG_OFFSET && reg < SI_SH_REG_END) {
59 		opcode = PKT3_SET_SH_REG;
60 		reg -= SI_SH_REG_OFFSET;
61 
62 	} else if (reg >= SI_CONTEXT_REG_OFFSET && reg < SI_CONTEXT_REG_END) {
63 		opcode = PKT3_SET_CONTEXT_REG;
64 		reg -= SI_CONTEXT_REG_OFFSET;
65 
66 	} else if (reg >= CIK_UCONFIG_REG_OFFSET && reg < CIK_UCONFIG_REG_END) {
67 		opcode = PKT3_SET_UCONFIG_REG;
68 		reg -= CIK_UCONFIG_REG_OFFSET;
69 
70 	} else {
71 		R600_ERR("Invalid register offset %08x!\n", reg);
72 		return;
73 	}
74 
75 	reg >>= 2;
76 
77 	if (opcode != state->last_opcode || reg != (state->last_reg + 1)) {
78 		si_pm4_cmd_begin(state, opcode);
79 		si_pm4_cmd_add(state, reg);
80 	}
81 
82 	state->last_reg = reg;
83 	si_pm4_cmd_add(state, val);
84 	si_pm4_cmd_end(state, false);
85 }
86 
si_pm4_add_bo(struct si_pm4_state * state,struct r600_resource * bo,enum radeon_bo_usage usage,enum radeon_bo_priority priority)87 void si_pm4_add_bo(struct si_pm4_state *state,
88                    struct r600_resource *bo,
89                    enum radeon_bo_usage usage,
90 		   enum radeon_bo_priority priority)
91 {
92 	unsigned idx = state->nbo++;
93 	assert(idx < SI_PM4_MAX_BO);
94 
95 	r600_resource_reference(&state->bo[idx], bo);
96 	state->bo_usage[idx] = usage;
97 	state->bo_priority[idx] = priority;
98 }
99 
si_pm4_clear_state(struct si_pm4_state * state)100 void si_pm4_clear_state(struct si_pm4_state *state)
101 {
102 	for (int i = 0; i < state->nbo; ++i)
103 		r600_resource_reference(&state->bo[i], NULL);
104 	r600_resource_reference(&state->indirect_buffer, NULL);
105 	state->nbo = 0;
106 	state->ndw = 0;
107 }
108 
si_pm4_free_state(struct si_context * sctx,struct si_pm4_state * state,unsigned idx)109 void si_pm4_free_state(struct si_context *sctx,
110 		       struct si_pm4_state *state,
111 		       unsigned idx)
112 {
113 	if (!state)
114 		return;
115 
116 	if (idx != ~0 && sctx->emitted.array[idx] == state) {
117 		sctx->emitted.array[idx] = NULL;
118 	}
119 
120 	si_pm4_clear_state(state);
121 	FREE(state);
122 }
123 
si_pm4_emit(struct si_context * sctx,struct si_pm4_state * state)124 void si_pm4_emit(struct si_context *sctx, struct si_pm4_state *state)
125 {
126 	struct radeon_winsys_cs *cs = sctx->b.gfx.cs;
127 
128 	for (int i = 0; i < state->nbo; ++i) {
129 		radeon_add_to_buffer_list(&sctx->b, &sctx->b.gfx, state->bo[i],
130 				      state->bo_usage[i], state->bo_priority[i]);
131 	}
132 
133 	if (!state->indirect_buffer) {
134 		radeon_emit_array(cs, state->pm4, state->ndw);
135 	} else {
136 		struct r600_resource *ib = state->indirect_buffer;
137 
138 		radeon_add_to_buffer_list(&sctx->b, &sctx->b.gfx, ib,
139 					  RADEON_USAGE_READ,
140                                           RADEON_PRIO_IB2);
141 
142 		radeon_emit(cs, PKT3(PKT3_INDIRECT_BUFFER_CIK, 2, 0));
143 		radeon_emit(cs, ib->gpu_address);
144 		radeon_emit(cs, ib->gpu_address >> 32);
145 		radeon_emit(cs, (ib->b.b.width0 >> 2) & 0xfffff);
146 	}
147 }
148 
si_pm4_reset_emitted(struct si_context * sctx)149 void si_pm4_reset_emitted(struct si_context *sctx)
150 {
151 	memset(&sctx->emitted, 0, sizeof(sctx->emitted));
152 	sctx->dirty_states |= u_bit_consecutive(0, SI_NUM_STATES);
153 }
154 
si_pm4_upload_indirect_buffer(struct si_context * sctx,struct si_pm4_state * state)155 void si_pm4_upload_indirect_buffer(struct si_context *sctx,
156 				   struct si_pm4_state *state)
157 {
158 	struct pipe_screen *screen = sctx->b.b.screen;
159 	unsigned aligned_ndw = align(state->ndw, 8);
160 
161 	/* only supported on CIK and later */
162 	if (sctx->b.chip_class < CIK)
163 		return;
164 
165 	assert(state->ndw);
166 	assert(aligned_ndw <= SI_PM4_MAX_DW);
167 
168 	r600_resource_reference(&state->indirect_buffer, NULL);
169 	/* TODO: this hangs with 1024 or higher alignment on GFX9. */
170 	state->indirect_buffer = (struct r600_resource*)
171 		si_aligned_buffer_create(screen, 0,
172 					 PIPE_USAGE_DEFAULT, aligned_ndw * 4,
173 					 256);
174 	if (!state->indirect_buffer)
175 		return;
176 
177 	/* Pad the IB to 8 DWs to meet CP fetch alignment requirements. */
178 	if (sctx->screen->info.gfx_ib_pad_with_type2) {
179 		for (int i = state->ndw; i < aligned_ndw; i++)
180 			state->pm4[i] = 0x80000000; /* type2 nop packet */
181 	} else {
182 		for (int i = state->ndw; i < aligned_ndw; i++)
183 			state->pm4[i] = 0xffff1000; /* type3 nop packet */
184 	}
185 
186 	pipe_buffer_write(&sctx->b.b, &state->indirect_buffer->b.b,
187 			  0, aligned_ndw *4, state->pm4);
188 }
189