On Mon, Dec 7, 2015 at 9:10 AM, <eocallag...@alterapraxis.com> wrote: > On 2015-12-07 19:00, Dave Airlie wrote: >> >> From: Dave Airlie <airl...@redhat.com> >> >> At last on ARUBA this is required to stop tessellation hanging >> in heaven. >> >> This removes one of the SIMDs from use by the HS/LS. >> >> Signed-off-by: Dave Airlie <airl...@redhat.com> >> --- >> src/gallium/drivers/r600/evergreen_state.c | 7 ++++++- >> 1 file changed, 6 insertions(+), 1 deletion(-) >> >> diff --git a/src/gallium/drivers/r600/evergreen_state.c >> b/src/gallium/drivers/r600/evergreen_state.c >> index 571ea86..d8a14e1 100644 >> --- a/src/gallium/drivers/r600/evergreen_state.c >> +++ b/src/gallium/drivers/r600/evergreen_state.c >> @@ -2424,7 +2424,7 @@ static void cayman_init_atom_start_cs(struct >> r600_context *rctx) >> struct r600_command_buffer *cb = &rctx->start_cs_cmd; >> int tmp, i; >> >> - r600_init_command_buffer(cb, 336); >> + r600_init_command_buffer(cb, 342); >> >> /* This must be first. */ >> r600_store_value(cb, PKT3(PKT3_CONTEXT_CONTROL, 1, 0)); >> @@ -2441,6 +2441,11 @@ static void cayman_init_atom_start_cs(struct >> r600_context *rctx) >> r600_store_config_reg(cb, R_009100_SPI_CONFIG_CNTL, 0); >> r600_store_config_reg(cb, R_00913C_SPI_CONFIG_CNTL_1, >> S_00913C_VTX_DONE_DELAY(4)); >> >> + r600_store_config_reg_seq(cb, R_008E20_SQ_STATIC_THREAD_MGMT1, 3); >> + r600_store_value(cb, 0xffffffff); >> + r600_store_value(cb, 0xffffffff); >> + r600_store_value(cb, 0xfffffffe); >> + >> r600_store_context_reg_seq(cb, R_028900_SQ_ESGS_RING_ITEMSIZE, 6); >> r600_store_value(cb, 0); /* R_028900_SQ_ESGS_RING_ITEMSIZE */ >> r600_store_value(cb, 0); /* R_028904_SQ_GSVS_RING_ITEMSIZE */ > > > Would be ideal to have a inline comment to make explicit this is addressing > a hw erratum but otherwise,
It's not an erratum, it's a hardware requirement by design. GCN has the same requirement. Marek _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
