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drm/amd/display: Restore rptr/wptr for DMCUB as workaround

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[ Upstream commit 8f3589bb6fcea397775398cba4fbcc46829a60ed ]

[Why]
States may be desync after resume.

[How]
Sync sw state with hw state.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: JinZe.Xu <JinZe.Xu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Stable-dep-of: 1ffa8602e39b ("drm/amd/display: Guard against invalid RPTR/WPTR being set")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
JinZe.Xu 2023-04-10 23:23:37 +08:00 • committed by Greg Kroah-Hartman
parent 4ec4508db9
commit 395a63ca1a
8 changed files with 52 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

14
drivers/gpu/drm/amd/display/dmub/dmub_srv.h
View file

@ -332,6 +332,8 @@ struct dmub_srv_hw_funcs {
void (*setup_mailbox)(struct dmub_srv *dmub,
const struct dmub_region *inbox1);
uint32_t (*get_inbox1_wptr)(struct dmub_srv *dmub);
uint32_t (*get_inbox1_rptr)(struct dmub_srv *dmub);
void (*set_inbox1_wptr)(struct dmub_srv *dmub, uint32_t wptr_offset);
@ -590,6 +592,18 @@ enum dmub_status dmub_srv_hw_init(struct dmub_srv *dmub,
*/
enum dmub_status dmub_srv_hw_reset(struct dmub_srv *dmub);
/**
* dmub_srv_sync_inbox1() - sync sw state with hw state
* @dmub: the dmub service
*
* Sync sw state with hw state when resume from S0i3
*
* Return:
* DMUB_STATUS_OK - success
* DMUB_STATUS_INVALID - unspecified error
*/
enum dmub_status dmub_srv_sync_inbox1(struct dmub_srv *dmub);
/**
* dmub_srv_cmd_queue() - queues a command to the DMUB
* @dmub: the dmub service

5
drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c
View file

@ -282,6 +282,11 @@ void dmub_dcn20_setup_mailbox(struct dmub_srv *dmub,
REG_WRITE(DMCUB_INBOX1_SIZE, inbox1->top - inbox1->base);
}
uint32_t dmub_dcn20_get_inbox1_wptr(struct dmub_srv *dmub)
{
return REG_READ(DMCUB_INBOX1_WPTR);
}
uint32_t dmub_dcn20_get_inbox1_rptr(struct dmub_srv *dmub)
{
return REG_READ(DMCUB_INBOX1_RPTR);

2
drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.h
View file

@ -202,6 +202,8 @@ void dmub_dcn20_setup_windows(struct dmub_srv *dmub,
void dmub_dcn20_setup_mailbox(struct dmub_srv *dmub,
const struct dmub_region *inbox1);
uint32_t dmub_dcn20_get_inbox1_wptr(struct dmub_srv *dmub);
uint32_t dmub_dcn20_get_inbox1_rptr(struct dmub_srv *dmub);
void dmub_dcn20_set_inbox1_wptr(struct dmub_srv *dmub, uint32_t wptr_offset);

5
drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c
View file

@ -242,6 +242,11 @@ void dmub_dcn31_setup_mailbox(struct dmub_srv *dmub,
REG_WRITE(DMCUB_INBOX1_SIZE, inbox1->top - inbox1->base);
}
uint32_t dmub_dcn31_get_inbox1_wptr(struct dmub_srv *dmub)
{
return REG_READ(DMCUB_INBOX1_WPTR);
}
uint32_t dmub_dcn31_get_inbox1_rptr(struct dmub_srv *dmub)
{
return REG_READ(DMCUB_INBOX1_RPTR);

2
drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.h
View file

@ -204,6 +204,8 @@ void dmub_dcn31_setup_windows(struct dmub_srv *dmub,
void dmub_dcn31_setup_mailbox(struct dmub_srv *dmub,
const struct dmub_region *inbox1);
uint32_t dmub_dcn31_get_inbox1_wptr(struct dmub_srv *dmub);
uint32_t dmub_dcn31_get_inbox1_rptr(struct dmub_srv *dmub);
void dmub_dcn31_set_inbox1_wptr(struct dmub_srv *dmub, uint32_t wptr_offset);

5
drivers/gpu/drm/amd/display/dmub/src/dmub_dcn32.c
View file

@ -266,6 +266,11 @@ void dmub_dcn32_setup_mailbox(struct dmub_srv *dmub,
REG_WRITE(DMCUB_INBOX1_SIZE, inbox1->top - inbox1->base);
}
uint32_t dmub_dcn32_get_inbox1_wptr(struct dmub_srv *dmub)
{
return REG_READ(DMCUB_INBOX1_WPTR);
}
uint32_t dmub_dcn32_get_inbox1_rptr(struct dmub_srv *dmub)
{
return REG_READ(DMCUB_INBOX1_RPTR);

2
drivers/gpu/drm/amd/display/dmub/src/dmub_dcn32.h
View file

@ -206,6 +206,8 @@ void dmub_dcn32_setup_windows(struct dmub_srv *dmub,
void dmub_dcn32_setup_mailbox(struct dmub_srv *dmub,
const struct dmub_region *inbox1);
uint32_t dmub_dcn32_get_inbox1_wptr(struct dmub_srv *dmub);
uint32_t dmub_dcn32_get_inbox1_rptr(struct dmub_srv *dmub);
void dmub_dcn32_set_inbox1_wptr(struct dmub_srv *dmub, uint32_t wptr_offset);

17
drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c
View file

@ -167,6 +167,7 @@ static bool dmub_srv_hw_setup(struct dmub_srv *dmub, enum dmub_asic asic)
funcs->backdoor_load = dmub_dcn20_backdoor_load;
funcs->setup_windows = dmub_dcn20_setup_windows;
funcs->setup_mailbox = dmub_dcn20_setup_mailbox;
funcs->get_inbox1_wptr = dmub_dcn20_get_inbox1_wptr;
funcs->get_inbox1_rptr = dmub_dcn20_get_inbox1_rptr;
funcs->set_inbox1_wptr = dmub_dcn20_set_inbox1_wptr;
funcs->is_supported = dmub_dcn20_is_supported;
@ -243,6 +244,7 @@ static bool dmub_srv_hw_setup(struct dmub_srv *dmub, enum dmub_asic asic)
funcs->backdoor_load = dmub_dcn31_backdoor_load;
funcs->setup_windows = dmub_dcn31_setup_windows;
funcs->setup_mailbox = dmub_dcn31_setup_mailbox;
funcs->get_inbox1_wptr = dmub_dcn31_get_inbox1_wptr;
funcs->get_inbox1_rptr = dmub_dcn31_get_inbox1_rptr;
funcs->set_inbox1_wptr = dmub_dcn31_set_inbox1_wptr;
funcs->setup_out_mailbox = dmub_dcn31_setup_out_mailbox;
@ -281,6 +283,7 @@ static bool dmub_srv_hw_setup(struct dmub_srv *dmub, enum dmub_asic asic)
funcs->backdoor_load_zfb_mode = dmub_dcn32_backdoor_load_zfb_mode;
funcs->setup_windows = dmub_dcn32_setup_windows;
funcs->setup_mailbox = dmub_dcn32_setup_mailbox;
funcs->get_inbox1_wptr = dmub_dcn32_get_inbox1_wptr;
funcs->get_inbox1_rptr = dmub_dcn32_get_inbox1_rptr;
funcs->set_inbox1_wptr = dmub_dcn32_set_inbox1_wptr;
funcs->setup_out_mailbox = dmub_dcn32_setup_out_mailbox;
@ -666,6 +669,20 @@ enum dmub_status dmub_srv_hw_init(struct dmub_srv *dmub,
return DMUB_STATUS_OK;
}
enum dmub_status dmub_srv_sync_inbox1(struct dmub_srv *dmub)
{
if (!dmub->sw_init)
return DMUB_STATUS_INVALID;
if (dmub->hw_funcs.get_inbox1_rptr && dmub->hw_funcs.get_inbox1_wptr) {
dmub->inbox1_rb.rptr = dmub->hw_funcs.get_inbox1_rptr(dmub);
dmub->inbox1_rb.wrpt = dmub->hw_funcs.get_inbox1_wptr(dmub);
dmub->inbox1_last_wptr = dmub->inbox1_rb.wrpt;
}
return DMUB_STATUS_OK;
}
enum dmub_status dmub_srv_hw_reset(struct dmub_srv *dmub)
{
if (!dmub->sw_init)