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r600g: avoid GPU doing constant preload from random address

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Previous command stream might have set any of the constant buffer
and the previous address might no longer be valid thus GPU might
preload constant from random invalid address and possibly triggering
lockup.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
This commit is contained in:
Jerome Glisse 2012-09-07 15:00:20 -04:00
parent 9ccaa24f84
commit 841c1b5f54
2 changed files with 40 additions and 0 deletions
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20
src/gallium/drivers/r600/evergreen_state.c
View file

@ -2602,6 +2602,26 @@ void evergreen_init_common_regs(struct r600_command_buffer *cb,
r600_store_context_reg(cb, R_028848_SQ_PGM_RESOURCES_2_PS, S_028848_SINGLE_ROUND(V_SQ_ROUND_NEAREST_EVEN));
r600_store_context_reg(cb, R_028864_SQ_PGM_RESOURCES_2_VS, S_028864_SINGLE_ROUND(V_SQ_ROUND_NEAREST_EVEN));
/* to avoid GPU doing any preloading of constant from random address */
r600_store_context_reg_seq(cb, R_028140_ALU_CONST_BUFFER_SIZE_PS_0, 8);
r600_store_value(cb, 0); /* R_028140_ALU_CONST_BUFFER_SIZE_PS_0 */
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_context_reg_seq(cb, R_028180_ALU_CONST_BUFFER_SIZE_VS_0, 8);
r600_store_value(cb, 0); /* R_028180_ALU_CONST_BUFFER_SIZE_VS_0 */
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_context_reg(cb, R_028354_SX_SURFACE_SYNC, S_028354_SURFACE_SYNC_MASK(0xf));
return;

20
src/gallium/drivers/r600/r600_state.c
View file

@ -2381,6 +2381,26 @@ void r600_init_atom_start_cs(struct r600_context *rctx)
r600_store_value(cb, 0); /* R_0288C4_SQ_REDUC_RING_ITEMSIZE */
r600_store_value(cb, 0); /* R_0288C8_SQ_GS_VERT_ITEMSIZE */
/* to avoid GPU doing any preloading of constant from random address */
r600_store_context_reg_seq(cb, R_028140_ALU_CONST_BUFFER_SIZE_PS_0, 8);
r600_store_value(cb, 0); /* R_028140_ALU_CONST_BUFFER_SIZE_PS_0 */
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_context_reg_seq(cb, R_028180_ALU_CONST_BUFFER_SIZE_VS_0, 8);
r600_store_value(cb, 0); /* R_028180_ALU_CONST_BUFFER_SIZE_VS_0 */
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_value(cb, 0);
r600_store_context_reg_seq(cb, R_028A10_VGT_OUTPUT_PATH_CNTL, 13);
r600_store_value(cb, 0); /* R_028A10_VGT_OUTPUT_PATH_CNTL */
r600_store_value(cb, 0); /* R_028A14_VGT_HOS_CNTL */