From: Chunming Zhou <[email protected]> sdma is powered down by default in vbios, need to power up in driver init. Power it down again on driver tear down.
Signed-off-by: Chunming Zhou <[email protected]> Reviewed-by: Hawking Zhang <[email protected]> Signed-off-by: Alex Deucher <[email protected]> --- drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c b/drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c index 6b6b755..6c931ba 100644 --- a/drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c +++ b/drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c @@ -243,6 +243,26 @@ static int rv_verify_smc_interface(struct pp_smumgr *smumgr) return 0; } +/* sdma is disabled by default in vbios, need to re-enable in driver */ +static int rv_smc_enable_sdma(struct pp_smumgr *smumgr) +{ + PP_ASSERT_WITH_CODE(!rv_send_msg_to_smc(smumgr, + PPSMC_MSG_PowerUpSdma), + "Attempt to power up sdma Failed!", + return -EINVAL); + + return 0; +} + +static int rv_smc_disable_sdma(struct pp_smumgr *smumgr) +{ + PP_ASSERT_WITH_CODE(!rv_send_msg_to_smc(smumgr, + PPSMC_MSG_PowerDownSdma), + "Attempt to power down sdma Failed!", + return -EINVAL); + + return 0; +} static int rv_smu_fini(struct pp_smumgr *smumgr) { @@ -250,6 +270,7 @@ static int rv_smu_fini(struct pp_smumgr *smumgr) (struct rv_smumgr *)(smumgr->backend); if (priv) { + rv_smc_disable_sdma(smumgr); cgs_free_gpu_mem(smumgr->device, priv->smu_tables.entry[WMTABLE].handle); cgs_free_gpu_mem(smumgr->device, @@ -265,6 +286,8 @@ static int rv_start_smu(struct pp_smumgr *smumgr) { if (rv_verify_smc_interface(smumgr)) return -EINVAL; + if (rv_smc_enable_sdma(smumgr)) + return -EINVAL; return 0; } -- 2.5.5 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
