diff options
| author | Dave Airlie <airlied@redhat.com> | 2019-04-03 11:36:52 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2019-04-03 13:26:11 +1000 |
| commit | 457109829f4ee4107e8c7108237afba21fabbb5e (patch) | |
| tree | b2494fb72af2f0d4572362dcf30fb532a846ef7d /drivers/gpu/drm/amd/display/modules/freesync/freesync.c | |
| parent | b4e4538a0ab5079ae5dc401970e11f0ff2ba13a7 (diff) | |
| parent | 7a65bdc6903d4cae56855eceabfd8f879a3b8f6e (diff) | |
Merge branch 'drm-next-5.2' of git://people.freedesktop.org/~agd5f/linux into drm-next
amdgpu:
- Switch to HMM for userptr (reverted until HMM fixes land)
- New experimental SMU 11 replacement for powerplay for vega20 (not enabled by default)
- Initial RAS support for vega20
- BACO support for vega12
- BACO fixes for vega20
- Rework IH handling for page fault and retry interrupts
- Cleanly split CPU and GPU paths for GPUVM updates
- Powerplay fixes
- XGMI fixes
- Rework how DC interacts with atomic for planes
- Clean up and simplify DC/Powerplay interfaces
- Misc cleanups and bug fixes
amdkfd:
- Switch to HMM for userptr (reverted until HMM fixes land)
- Add initial RAS support
- MQD fixes
ttm:
- Unify DRM_FILE_PAGE_OFFSET handling
- Account for kernel allocations in kernel zone only
- Misc cleanups
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190402170820.22197-1-alexander.deucher@amd.com
Diffstat (limited to 'drivers/gpu/drm/amd/display/modules/freesync/freesync.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/freesync/freesync.c | 168 |
1 files changed, 133 insertions, 35 deletions
diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c index bfd27f10879e..3d867e34f8b3 100644 --- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c +++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c @@ -37,6 +37,8 @@ #define RENDER_TIMES_MAX_COUNT 10 /* Threshold to exit BTR (to avoid frequent enter-exits at the lower limit) */ #define BTR_EXIT_MARGIN 2000 +/* Threshold to change BTR multiplier (to avoid frequent changes) */ +#define BTR_DRIFT_MARGIN 2000 /*Threshold to exit fixed refresh rate*/ #define FIXED_REFRESH_EXIT_MARGIN_IN_HZ 4 /* Number of consecutive frames to check before entering/exiting fixed refresh*/ @@ -48,6 +50,93 @@ struct core_freesync { struct dc *dc; }; +void setFieldWithMask(unsigned char *dest, unsigned int mask, unsigned int value) +{ + unsigned int shift = 0; + + if (!mask || !dest) + return; + + while (!((mask >> shift) & 1)) + shift++; + + //reset + *dest = *dest & ~mask; + //set + //dont let value span past mask + value = value & (mask >> shift); + //insert value + *dest = *dest | (value << shift); +} + +// VTEM Byte Offset +#define VRR_VTEM_PB0 0 +#define VRR_VTEM_PB1 1 +#define VRR_VTEM_PB2 2 +#define VRR_VTEM_PB3 3 +#define VRR_VTEM_PB4 4 +#define VRR_VTEM_PB5 5 +#define VRR_VTEM_PB6 6 + +#define VRR_VTEM_MD0 7 +#define VRR_VTEM_MD1 8 +#define VRR_VTEM_MD2 9 +#define VRR_VTEM_MD3 10 + + +// VTEM Byte Masks +//PB0 +#define MASK__VRR_VTEM_PB0__RESERVED0 0x01 +#define MASK__VRR_VTEM_PB0__SYNC 0x02 +#define MASK__VRR_VTEM_PB0__VFR 0x04 +#define MASK__VRR_VTEM_PB0__AFR 0x08 +#define MASK__VRR_VTEM_PB0__DS_TYPE 0x30 + //0: Periodic pseudo-static EM Data Set + //1: Periodic dynamic EM Data Set + //2: Unique EM Data Set + //3: Reserved +#define MASK__VRR_VTEM_PB0__END 0x40 +#define MASK__VRR_VTEM_PB0__NEW 0x80 + +//PB1 +#define MASK__VRR_VTEM_PB1__RESERVED1 0xFF + +//PB2 +#define MASK__VRR_VTEM_PB2__ORGANIZATION_ID 0xFF + //0: This is a Vendor Specific EM Data Set + //1: This EM Data Set is defined by This Specification (HDMI 2.1 r102.clean) + //2: This EM Data Set is defined by CTA-861-G + //3: This EM Data Set is defined by VESA +//PB3 +#define MASK__VRR_VTEM_PB3__DATA_SET_TAG_MSB 0xFF +//PB4 +#define MASK__VRR_VTEM_PB4__DATA_SET_TAG_LSB 0xFF +//PB5 +#define MASK__VRR_VTEM_PB5__DATA_SET_LENGTH_MSB 0xFF +//PB6 +#define MASK__VRR_VTEM_PB6__DATA_SET_LENGTH_LSB 0xFF + + + +//PB7-27 (20 bytes): +//PB7 = MD0 +#define MASK__VRR_VTEM_MD0__VRR_EN 0x01 +#define MASK__VRR_VTEM_MD0__M_CONST 0x02 +#define MASK__VRR_VTEM_MD0__RESERVED2 0x0C +#define MASK__VRR_VTEM_MD0__FVA_FACTOR_M1 0xF0 + +//MD1 +#define MASK__VRR_VTEM_MD1__BASE_VFRONT 0xFF + +//MD2 +#define MASK__VRR_VTEM_MD2__BASE_REFRESH_RATE_98 0x03 +#define MASK__VRR_VTEM_MD2__RB 0x04 +#define MASK__VRR_VTEM_MD2__RESERVED3 0xF8 + +//MD3 +#define MASK__VRR_VTEM_MD3__BASE_REFRESH_RATE_07 0xFF + + #define MOD_FREESYNC_TO_CORE(mod_freesync)\ container_of(mod_freesync, struct core_freesync, public) @@ -248,6 +337,7 @@ static void apply_below_the_range(struct core_freesync *core_freesync, unsigned int frames_to_insert = 0; unsigned int min_frame_duration_in_ns = 0; unsigned int max_render_time_in_us = in_out_vrr->max_duration_in_us; + unsigned int delta_from_mid_point_delta_in_us; min_frame_duration_in_ns = ((unsigned int) (div64_u64( (1000000000ULL * 1000000), @@ -318,10 +408,27 @@ static void apply_below_the_range(struct core_freesync *core_freesync, /* Choose number of frames to insert based on how close it * can get to the mid point of the variable range. */ - if (delta_from_mid_point_in_us_1 < delta_from_mid_point_in_us_2) + if (delta_from_mid_point_in_us_1 < delta_from_mid_point_in_us_2) { frames_to_insert = mid_point_frames_ceil; - else + delta_from_mid_point_delta_in_us = delta_from_mid_point_in_us_2 - + delta_from_mid_point_in_us_1; + } else { frames_to_insert = mid_point_frames_floor; + delta_from_mid_point_delta_in_us = delta_from_mid_point_in_us_1 - + delta_from_mid_point_in_us_2; + } + + /* Prefer current frame multiplier when BTR is enabled unless it drifts + * too far from the midpoint + */ + if (in_out_vrr->btr.frames_to_insert != 0 && + delta_from_mid_point_delta_in_us < BTR_DRIFT_MARGIN) { + if (((last_render_time_in_us / in_out_vrr->btr.frames_to_insert) < + in_out_vrr->max_duration_in_us) && + ((last_render_time_in_us / in_out_vrr->btr.frames_to_insert) > + in_out_vrr->min_duration_in_us)) + frames_to_insert = in_out_vrr->btr.frames_to_insert; + } /* Either we've calculated the number of frames to insert, * or we need to insert min duration frames @@ -469,16 +576,14 @@ static void build_vrr_infopacket_header_vtem(enum signal_type signal, // HB0, HB1, HB2 indicates PacketType VTEMPacket infopacket->hb0 = 0x7F; infopacket->hb1 = 0xC0; - infopacket->hb2 = 0x00; - /* HB3 Bit Fields - * Reserved :1 = 0 - * Sync :1 = 0 - * VFR :1 = 1 - * Ds_Type :2 = 0 - * End :1 = 0 - * New :1 = 0 - */ - infopacket->hb3 = 0x20; + infopacket->hb2 = 0x00; //sequence_index + + setFieldWithMask(&infopacket->sb[VRR_VTEM_PB0], MASK__VRR_VTEM_PB0__VFR, 1); + setFieldWithMask(&infopacket->sb[VRR_VTEM_PB2], MASK__VRR_VTEM_PB2__ORGANIZATION_ID, 1); + setFieldWithMask(&infopacket->sb[VRR_VTEM_PB3], MASK__VRR_VTEM_PB3__DATA_SET_TAG_MSB, 0); + setFieldWithMask(&infopacket->sb[VRR_VTEM_PB4], MASK__VRR_VTEM_PB4__DATA_SET_TAG_LSB, 1); + setFieldWithMask(&infopacket->sb[VRR_VTEM_PB5], MASK__VRR_VTEM_PB5__DATA_SET_LENGTH_MSB, 0); + setFieldWithMask(&infopacket->sb[VRR_VTEM_PB6], MASK__VRR_VTEM_PB6__DATA_SET_LENGTH_LSB, 4); } static void build_vrr_infopacket_header_v1(enum signal_type signal, @@ -583,45 +688,36 @@ static void build_vrr_vtem_infopacket_data(const struct dc_stream_state *stream, const struct mod_vrr_params *vrr, struct dc_info_packet *infopacket) { - /* dc_info_packet to VtemPacket Translation of Bit-fields, - * SB[6] - * unsigned char VRR_EN :1 - * unsigned char M_CONST :1 - * unsigned char Reserved2 :2 - * unsigned char FVA_Factor_M1 :4 - * SB[7] - * unsigned char Base_Vfront :8 - * SB[8] - * unsigned char Base_Refresh_Rate_98 :2 - * unsigned char RB :1 - * unsigned char Reserved3 :5 - * SB[9] - * unsigned char Base_RefreshRate_07 :8 - */ unsigned int fieldRateInHz; if (vrr->state == VRR_STATE_ACTIVE_VARIABLE || - vrr->state == VRR_STATE_ACTIVE_FIXED){ - infopacket->sb[6] |= 0x80; //VRR_EN Bit = 1 + vrr->state == VRR_STATE_ACTIVE_FIXED) { + setFieldWithMask(&infopacket->sb[VRR_VTEM_MD0], MASK__VRR_VTEM_MD0__VRR_EN, 1); } else { - infopacket->sb[6] &= 0x7F; //VRR_EN Bit = 0 + setFieldWithMask(&infopacket->sb[VRR_VTEM_MD0], MASK__VRR_VTEM_MD0__VRR_EN, 0); } if (!stream->timing.vic) { - infopacket->sb[7] = stream->timing.v_front_porch; + setFieldWithMask(&infopacket->sb[VRR_VTEM_MD1], MASK__VRR_VTEM_MD1__BASE_VFRONT, + stream->timing.v_front_porch); + /* TODO: In dal2, we check mode flags for a reduced blanking timing. * Need a way to relay that information to this function. * if("ReducedBlanking") * { - * infopacket->sb[8] |= 0x20; //Set 3rd bit to 1 + * setFieldWithMask(&infopacket->sb[VRR_VTEM_MD2], MASK__VRR_VTEM_MD2__RB, 1; * } */ + + //TODO: DAL2 does FixPoint and rounding. Here we might need to account for that fieldRateInHz = (stream->timing.pix_clk_100hz * 100)/ - (stream->timing.h_total * stream->timing.v_total); + (stream->timing.h_total * stream->timing.v_total); - infopacket->sb[8] |= ((fieldRateInHz & 0x300) >> 2); - infopacket->sb[9] |= fieldRateInHz & 0xFF; + setFieldWithMask(&infopacket->sb[VRR_VTEM_MD2], MASK__VRR_VTEM_MD2__BASE_REFRESH_RATE_98, + fieldRateInHz >> 8); + setFieldWithMask(&infopacket->sb[VRR_VTEM_MD3], MASK__VRR_VTEM_MD3__BASE_REFRESH_RATE_07, + fieldRateInHz); } infopacket->valid = true; @@ -745,6 +841,8 @@ static void build_vrr_infopacket_vtem(const struct dc_stream_state *stream, { //VTEM info packet for HdmiVrr + memset(infopacket, 0, sizeof(struct dc_info_packet)); + //VTEM Packet is structured differently build_vrr_infopacket_header_vtem(stream->signal, infopacket); build_vrr_vtem_infopacket_data(stream, vrr, infopacket); |