From: Jun Lei Date: Tue, 23 Oct 2018 16:12:50 +0000 (-0400) Subject: drm/amd/display: make underflow status clear explicit X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=eb6b29d62841ec38665840af4c443fbef85bf2ec;p=openwrt%2Fstaging%2Fblogic.git drm/amd/display: make underflow status clear explicit [why] HUBP underflow is never cleared, which causes underflow in one test to fail another test, violating the independence requirements [how] Rather than make clearing implicit, we explicitly clear underflow status in DTN. Signed-off-by: Jun Lei Reviewed-by: Tony Cheng Acked-by: Bhawanpreet Lakha Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubp.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubp.c index 74132a1f3046..6127fd30899b 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubp.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubp.c @@ -99,6 +99,14 @@ static unsigned int hubp1_get_underflow_status(struct hubp *hubp) return hubp_underflow; } + +void hubp1_clear_underflow(struct hubp *hubp) +{ + struct dcn10_hubp *hubp1 = TO_DCN10_HUBP(hubp); + + REG_UPDATE(DCHUBP_CNTL, HUBP_UNDERFLOW_CLEAR, 1); +} + static void hubp1_set_hubp_blank_en(struct hubp *hubp, bool blank) { struct dcn10_hubp *hubp1 = TO_DCN10_HUBP(hubp); @@ -1190,6 +1198,7 @@ static const struct hubp_funcs dcn10_hubp_funcs = { .hubp_clk_cntl = hubp1_clk_cntl, .hubp_vtg_sel = hubp1_vtg_sel, .hubp_read_state = hubp1_read_state, + .hubp_clear_underflow = hubp1_clear_underflow, .hubp_disable_control = hubp1_disable_control, .hubp_get_underflow_status = hubp1_get_underflow_status, diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubp.h b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubp.h index 4890273b632b..62d4232e7796 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubp.h +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubp.h @@ -251,6 +251,7 @@ HUBP_SF(HUBP0_DCHUBP_CNTL, HUBP_BLANK_EN, mask_sh),\ HUBP_SF(HUBP0_DCHUBP_CNTL, HUBP_TTU_DISABLE, mask_sh),\ HUBP_SF(HUBP0_DCHUBP_CNTL, HUBP_UNDERFLOW_STATUS, mask_sh),\ + HUBP_SF(HUBP0_DCHUBP_CNTL, HUBP_UNDERFLOW_CLEAR, mask_sh),\ HUBP_SF(HUBP0_DCHUBP_CNTL, HUBP_NO_OUTSTANDING_REQ, mask_sh),\ HUBP_SF(HUBP0_DCHUBP_CNTL, HUBP_VTG_SEL, mask_sh),\ HUBP_SF(HUBP0_DCHUBP_CNTL, HUBP_DISABLE, mask_sh),\ @@ -435,6 +436,7 @@ type HUBP_NO_OUTSTANDING_REQ;\ type HUBP_VTG_SEL;\ type HUBP_UNDERFLOW_STATUS;\ + type HUBP_UNDERFLOW_CLEAR;\ type NUM_PIPES;\ type NUM_BANKS;\ type PIPE_INTERLEAVE;\ @@ -739,6 +741,7 @@ void dcn10_hubp_construct( const struct dcn_mi_mask *hubp_mask); void hubp1_read_state(struct hubp *hubp); +void hubp1_clear_underflow(struct hubp *hubp); enum cursor_pitch hubp1_get_cursor_pitch(unsigned int pitch); diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c index 6b8a4da4f3c8..a59b89b27583 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c @@ -2710,6 +2710,7 @@ static const struct hw_sequencer_funcs dcn10_funcs = { .set_avmute = dce110_set_avmute, .log_hw_state = dcn10_log_hw_state, .get_hw_state = dcn10_get_hw_state, + .clear_status_bits = dcn10_clear_status_bits, .wait_for_mpcc_disconnect = dcn10_wait_for_mpcc_disconnect, .edp_backlight_control = hwss_edp_backlight_control, .edp_power_control = hwss_edp_power_control, diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.h b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.h index 5e5610c9e600..91bb77b468dd 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.h +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.h @@ -51,6 +51,8 @@ void dcn10_get_hw_state( char *pBuf, unsigned int bufSize, unsigned int mask); +void dcn10_clear_status_bits(struct dc *dc, unsigned int mask); + bool is_lower_pipe_tree_visible(struct pipe_ctx *pipe_ctx); bool is_upper_pipe_tree_visible(struct pipe_ctx *pipe_ctx); diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer_debug.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer_debug.c index 64158900730f..211bb240a720 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer_debug.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer_debug.c @@ -454,12 +454,6 @@ static unsigned int dcn10_get_otg_states(struct dc *dc, char *pBuf, unsigned int remaining_buffer -= chars_printed; pBuf += chars_printed; - - // Clear underflow for debug purposes - // We want to keep underflow sticky bit on for the longevity tests outside of test environment. - // This function is called only from Windows or Diags test environment, hence it's safe to clear - // it from here without affecting the original intent. - tg->funcs->clear_optc_underflow(tg); } } @@ -484,6 +478,59 @@ static unsigned int dcn10_get_clock_states(struct dc *dc, char *pBuf, unsigned i return chars_printed; } +static void dcn10_clear_otpc_underflow(struct dc *dc) +{ + struct resource_pool *pool = dc->res_pool; + int i; + + for (i = 0; i < pool->timing_generator_count; i++) { + struct timing_generator *tg = pool->timing_generators[i]; + struct dcn_otg_state s = {0}; + + optc1_read_otg_state(DCN10TG_FROM_TG(tg), &s); + + if (s.otg_enabled & 1) + tg->funcs->clear_optc_underflow(tg); + } +} + +static void dcn10_clear_hubp_underflow(struct dc *dc) +{ + struct resource_pool *pool = dc->res_pool; + int i; + + for (i = 0; i < pool->pipe_count; i++) { + struct hubp *hubp = pool->hubps[i]; + struct dcn_hubp_state *s = &(TO_DCN10_HUBP(hubp)->state); + + hubp->funcs->hubp_read_state(hubp); + + if (!s->blank_en) + hubp->funcs->hubp_clear_underflow(hubp); + } +} + +void dcn10_clear_status_bits(struct dc *dc, unsigned int mask) +{ + /* + * Mask Format + * Bit 0 - 31: Status bit to clear + * + * Mask = 0x0 means clear all status bits + */ + const unsigned int DC_HW_STATE_MASK_HUBP_UNDERFLOW = 0x1; + const unsigned int DC_HW_STATE_MASK_OTPC_UNDERFLOW = 0x2; + + if (mask == 0x0) + mask = 0xFFFFFFFF; + + if (mask & DC_HW_STATE_MASK_HUBP_UNDERFLOW) + dcn10_clear_hubp_underflow(dc); + + if (mask & DC_HW_STATE_MASK_OTPC_UNDERFLOW) + dcn10_clear_otpc_underflow(dc); +} + void dcn10_get_hw_state(struct dc *dc, char *pBuf, unsigned int bufSize, unsigned int mask) { /* diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/hubp.h b/drivers/gpu/drm/amd/display/dc/inc/hw/hubp.h index 334c48cdafdc..8f4f40646b4d 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/hw/hubp.h +++ b/drivers/gpu/drm/amd/display/dc/inc/hw/hubp.h @@ -121,6 +121,7 @@ struct hubp_funcs { void (*hubp_clk_cntl)(struct hubp *hubp, bool enable); void (*hubp_vtg_sel)(struct hubp *hubp, uint32_t otg_inst); void (*hubp_read_state)(struct hubp *hubp); + void (*hubp_clear_underflow)(struct hubp *hubp); void (*hubp_disable_control)(struct hubp *hubp, bool disable_hubp); unsigned int (*hubp_get_underflow_status)(struct hubp *hubp); diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h index e9b702ce02dd..d6a85f48b6d1 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h +++ b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h @@ -200,6 +200,7 @@ struct hw_sequencer_funcs { void (*log_hw_state)(struct dc *dc, struct dc_log_buffer_ctx *log_ctx); void (*get_hw_state)(struct dc *dc, char *pBuf, unsigned int bufSize, unsigned int mask); + void (*clear_status_bits)(struct dc *dc, unsigned int mask); void (*wait_for_mpcc_disconnect)(struct dc *dc, struct resource_pool *res_pool,