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drm/amd/display: add pipe reassignment prevention code to dcn3

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Add code to gracefuly handle any pipe reassignment
occuring on dcn3 hardware. This should only happen when new
surfaces are used for an update rather than old ones updated.

Fixes: 69fc1f4b97 ("amd/drm/display: avoid dcn3 on flip opp change for slave pipes")
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Dmytro Laktyushkin 2020-09-28 17:59:38 -04:00 committed by Alex Deucher
parent 8ffff9b449
commit d3768874e5
1 changed files with 49 additions and 12 deletions
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61
drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c
View File

@ -1901,21 +1901,28 @@ static bool dcn30_split_stream_for_mpc_or_odm(
static struct pipe_ctx *dcn30_find_split_pipe(
struct dc *dc,
struct dc_state *context)
struct dc_state *context,
int old_index)
{
struct pipe_ctx *pipe = NULL;
int i;
for (i = dc->res_pool->pipe_count - 1; i >= 0; i--) {
if (dc->current_state->res_ctx.pipe_ctx[i].top_pipe == NULL
&& dc->current_state->res_ctx.pipe_ctx[i].prev_odm_pipe == NULL) {
if (context->res_ctx.pipe_ctx[i].stream == NULL) {
pipe = &context->res_ctx.pipe_ctx[i];
pipe->pipe_idx = i;
break;
if (old_index >= 0 && context->res_ctx.pipe_ctx[old_index].stream == NULL) {
pipe = &context->res_ctx.pipe_ctx[old_index];
pipe->pipe_idx = old_index;
}
if (!pipe)
for (i = dc->res_pool->pipe_count - 1; i >= 0; i--) {
if (dc->current_state->res_ctx.pipe_ctx[i].top_pipe == NULL
&& dc->current_state->res_ctx.pipe_ctx[i].prev_odm_pipe == NULL) {
if (context->res_ctx.pipe_ctx[i].stream == NULL) {
pipe = &context->res_ctx.pipe_ctx[i];
pipe->pipe_idx = i;
break;
}
}
}
}
/*
* May need to fix pipes getting tossed from 1 opp to another on flip
@ -2082,8 +2089,10 @@ static bool dcn30_internal_validate_bw(
for (i = 0, pipe_idx = -1; i < dc->res_pool->pipe_count; i++) {
struct pipe_ctx *pipe = &context->res_ctx.pipe_ctx[i];
struct pipe_ctx *old_pipe = &dc->current_state->res_ctx.pipe_ctx[i];
struct pipe_ctx *hsplit_pipe = NULL;
bool odm;
int old_index = -1;
if (!pipe->stream || newly_split[i])
continue;
@ -2095,7 +2104,20 @@ static bool dcn30_internal_validate_bw(
continue;
if (split[i]) {
hsplit_pipe = dcn30_find_split_pipe(dc, context);
if (odm) {
if (split[i] == 4 && old_pipe->next_odm_pipe->next_odm_pipe)
old_index = old_pipe->next_odm_pipe->next_odm_pipe->pipe_idx;
else if (old_pipe->next_odm_pipe)
old_index = old_pipe->next_odm_pipe->pipe_idx;
} else {
if (split[i] == 4 && old_pipe->bottom_pipe->bottom_pipe &&
old_pipe->bottom_pipe->bottom_pipe->plane_state == old_pipe->plane_state)
old_index = old_pipe->bottom_pipe->bottom_pipe->pipe_idx;
else if (old_pipe->bottom_pipe &&
old_pipe->bottom_pipe->plane_state == old_pipe->plane_state)
old_index = old_pipe->bottom_pipe->pipe_idx;
}
hsplit_pipe = dcn30_find_split_pipe(dc, context, old_index);
ASSERT(hsplit_pipe);
if (!hsplit_pipe)
goto validate_fail;
@ -2109,8 +2131,16 @@ static bool dcn30_internal_validate_bw(
repopulate_pipes = true;
}
if (split[i] == 4) {
struct pipe_ctx *pipe_4to1 = dcn30_find_split_pipe(dc, context);
struct pipe_ctx *pipe_4to1;
if (odm && old_pipe->next_odm_pipe)
old_index = old_pipe->next_odm_pipe->pipe_idx;
else if (!odm && old_pipe->bottom_pipe &&
old_pipe->bottom_pipe->plane_state == old_pipe->plane_state)
old_index = old_pipe->bottom_pipe->pipe_idx;
else
old_index = -1;
pipe_4to1 = dcn30_find_split_pipe(dc, context, old_index);
ASSERT(pipe_4to1);
if (!pipe_4to1)
goto validate_fail;
@ -2120,7 +2150,14 @@ static bool dcn30_internal_validate_bw(
goto validate_fail;
newly_split[pipe_4to1->pipe_idx] = true;
pipe_4to1 = dcn30_find_split_pipe(dc, context);
if (odm && old_pipe->next_odm_pipe->next_odm_pipe->next_odm_pipe)
old_index = old_pipe->next_odm_pipe->next_odm_pipe->next_odm_pipe->pipe_idx;
else if (!odm && old_pipe->bottom_pipe->bottom_pipe->bottom_pipe &&
old_pipe->bottom_pipe->bottom_pipe->bottom_pipe->plane_state == old_pipe->plane_state)
old_index = old_pipe->bottom_pipe->bottom_pipe->bottom_pipe->pipe_idx;
else
old_index = -1;
pipe_4to1 = dcn30_find_split_pipe(dc, context, old_index);
ASSERT(pipe_4to1);
if (!pipe_4to1)
goto validate_fail;