RE: [PATCH 5.15 100/262] drm/amd/display: move FPU associated DSC code to DML folder

From: Deucher, Alexander
Date: Mon Mar 07 2022 - 12:21:34 EST

[Public]

> -----Original Message-----
> From: Deucher, Alexander
> Sent: Monday, March 7, 2022 12:19 PM
> To: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>; linux-
> kernel@xxxxxxxxxxxxxxx
> Cc: stable@xxxxxxxxxxxxxxx; Koenig, Christian <Christian.Koenig@xxxxxxx>;
> Wu, Hersen <hersenxs.wu@xxxxxxx>; Anson Jacob
> <Anson.Jacob@xxxxxxx>; Wentland, Harry <Harry.Wentland@xxxxxxx>;
> Siqueira, Rodrigo <Rodrigo.Siqueira@xxxxxxx>; Gutierrez, Agustin
> <Agustin.Gutierrez@xxxxxxx>; Wheeler, Daniel
> <Daniel.Wheeler@xxxxxxx>; Zhuo, Qingqing (Lillian)
> <Qingqing.Zhuo@xxxxxxx>; Sasha Levin <sashal@xxxxxxxxxx>
> Subject: RE: [PATCH 5.15 100/262] drm/amd/display: move FPU associated
> DSC code to DML folder
>
> [Public]
>
> > -----Original Message-----
> > From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> > Sent: Monday, March 7, 2022 4:17 AM
> > To: linux-kernel@xxxxxxxxxxxxxxx
> > Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>;
> > stable@xxxxxxxxxxxxxxx; Koenig, Christian <Christian.Koenig@xxxxxxx>;
> > Wu, Hersen <hersenxs.wu@xxxxxxx>; Anson Jacob
> <Anson.Jacob@xxxxxxx>;
> > Wentland, Harry <Harry.Wentland@xxxxxxx>; Siqueira, Rodrigo
> > <Rodrigo.Siqueira@xxxxxxx>; Gutierrez, Agustin
> > <Agustin.Gutierrez@xxxxxxx>; Wheeler, Daniel
> <Daniel.Wheeler@xxxxxxx>;
> > Zhuo, Qingqing (Lillian) <Qingqing.Zhuo@xxxxxxx>; Deucher, Alexander
> > <Alexander.Deucher@xxxxxxx>; Sasha Levin <sashal@xxxxxxxxxx>
> > Subject: [PATCH 5.15 100/262] drm/amd/display: move FPU associated DSC
> > code to DML folder
> >
> > From: Qingqing Zhuo <qingqing.zhuo@xxxxxxx>
> >
> > [ Upstream commit d738db6883df3e3c513f9e777c842262693f951b ]
> >
> > [Why & How]
> > As part of the FPU isolation work documented in
> >
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpatc
> >
> hwork.freedesktop.org%2Fseries%2F93042%2F&amp;data=04%7C01%7Calex
> >
> ander.deucher%40amd.com%7Cf4f4d5bfb9f74edfb8b108da001e6d8f%7C3dd
> >
> 8961fe4884e608e11a82d994e183d%7C0%7C0%7C637822427968538535%7CUn
> >
> known%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6
> >
> Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=2Mm24%2FPkRkih%2BToJ
> > oBGx2wpeth0Z0Rv3dG77D06fHbw%3D&amp;reserved=0, isolate code that
> uses
> > FPU in DSC to DML, where all FPU code should locate.
> >
> > This change does not refactor any functions but move code around.
> >
>
> This is not a really bug fix, just general reworking of the FP code. I don't
> know that this is stable material.

Same goes for all of the other patches related to this rework as noted in the URL in the commit message.

Alex

>
> Alex
>
>
> > Cc: Christian König <christian.koenig@xxxxxxx>
> > Cc: Hersen Wu <hersenxs.wu@xxxxxxx>
> > Cc: Anson Jacob <Anson.Jacob@xxxxxxx>
> > Cc: Harry Wentland <harry.wentland@xxxxxxx>
> > Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>
> > Acked-by: Agustin Gutierrez <agustin.gutierrez@xxxxxxx>
> > Tested-by: Anson Jacob <Anson.Jacob@xxxxxxx>
> > Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
> > Signed-off-by: Qingqing Zhuo <qingqing.zhuo@xxxxxxx>
> > Acked-by: Christian König <christian.koenig@xxxxxxx>
> > Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
> > Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
> > ---
> > drivers/gpu/drm/amd/display/dc/dml/Makefile | 3 +
> > .../amd/display/dc/{ => dml}/dsc/qp_tables.h | 0
> > .../drm/amd/display/dc/dml/dsc/rc_calc_fpu.c | 291
> > ++++++++++++++++++ .../drm/amd/display/dc/dml/dsc/rc_calc_fpu.h |
> > ++++++++++++++++++ 94
> > ++++++
> > drivers/gpu/drm/amd/display/dc/dsc/Makefile | 29 --
> > drivers/gpu/drm/amd/display/dc/dsc/rc_calc.c | 259 ----------------
> > drivers/gpu/drm/amd/display/dc/dsc/rc_calc.h | 50 +--
> > .../gpu/drm/amd/display/dc/dsc/rc_calc_dpi.c | 1 -
> > 8 files changed, 389 insertions(+), 338 deletions(-) rename
> > drivers/gpu/drm/amd/display/dc/{ => dml}/dsc/qp_tables.h (100%)
> > create mode 100644
> > drivers/gpu/drm/amd/display/dc/dml/dsc/rc_calc_fpu.c
> > create mode 100644
> > drivers/gpu/drm/amd/display/dc/dml/dsc/rc_calc_fpu.h
> >
> > diff --git a/drivers/gpu/drm/amd/display/dc/dml/Makefile
> > b/drivers/gpu/drm/amd/display/dc/dml/Makefile
> > index 56055df2e8d2e..9009b92490f34 100644
> > --- a/drivers/gpu/drm/amd/display/dc/dml/Makefile
> > +++ b/drivers/gpu/drm/amd/display/dc/dml/Makefile
> > @@ -70,6 +70,7 @@
> > CFLAGS_$(AMDDALPATH)/dc/dml/dcn30/display_mode_vba_30.o :=
> > $(dml_ccflags) $(fram
> > CFLAGS_$(AMDDALPATH)/dc/dml/dcn30/display_rq_dlg_calc_30.o :=
> > $(dml_ccflags)
> > CFLAGS_$(AMDDALPATH)/dc/dml/dcn31/display_mode_vba_31.o :=
> > $(dml_ccflags) $(frame_warn_flag)
> > CFLAGS_$(AMDDALPATH)/dc/dml/dcn31/display_rq_dlg_calc_31.o :=
> > $(dml_ccflags)
> > +CFLAGS_$(AMDDALPATH)/dc/dml/dsc/rc_calc_fpu.o := $(dml_ccflags)
> > CFLAGS_$(AMDDALPATH)/dc/dml/display_mode_lib.o := $(dml_ccflags)
> > CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml/display_mode_vba.o :=
> > $(dml_rcflags)
> CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml/dcn2x/dcn2x.o
> > := $(dml_rcflags) @@ -84,6 +85,7 @@
> >
> CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml/dcn30/display_rq_dlg_calc_30.
> > o := $(dml_rcfla
> >
> CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml/dcn31/display_mode_vba_31.o
> > := $(dml_rcflags)
> >
> CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml/dcn31/display_rq_dlg_calc_31.
> > o := $(dml_rcflags)
> > CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml/display_mode_lib.o :=
> > $(dml_rcflags)
> > +CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml/dsc/rc_calc_fpu.o :=
> > $(dml_rcflags)
> > endif
> > CFLAGS_$(AMDDALPATH)/dc/dml/dml1_display_rq_dlg_calc.o :=
> > $(dml_ccflags)
> CFLAGS_$(AMDDALPATH)/dc/dml/display_rq_dlg_helpers.o
> > := $(dml_ccflags) @@ -99,6 +101,7 @@ DML +=
> > dcn20/display_rq_dlg_calc_20v2.o dcn20/display_mode_vba_20v2.o DML
> > += dcn21/display_rq_dlg_calc_21.o dcn21/display_mode_vba_21.o DML
> +=
> > dcn30/display_mode_vba_30.o dcn30/display_rq_dlg_calc_30.o DML +=
> > dcn31/display_mode_vba_31.o dcn31/display_rq_dlg_calc_31.o
> > +DML += dsc/rc_calc_fpu.o
> > endif
> >
> > AMD_DAL_DML = $(addprefix $(AMDDALPATH)/dc/dml/,$(DML)) diff --git
> > a/drivers/gpu/drm/amd/display/dc/dsc/qp_tables.h
> > b/drivers/gpu/drm/amd/display/dc/dml/dsc/qp_tables.h
> > similarity index 100%
> > rename from drivers/gpu/drm/amd/display/dc/dsc/qp_tables.h
> > rename to drivers/gpu/drm/amd/display/dc/dml/dsc/qp_tables.h
> > diff --git a/drivers/gpu/drm/amd/display/dc/dml/dsc/rc_calc_fpu.c
> > b/drivers/gpu/drm/amd/display/dc/dml/dsc/rc_calc_fpu.c
> > new file mode 100644
> > index 0000000000000..3ee858f311d12
> > --- /dev/null
> > +++ b/drivers/gpu/drm/amd/display/dc/dml/dsc/rc_calc_fpu.c
> > @@ -0,0 +1,291 @@
> > +/*
> > + * Copyright 2021 Advanced Micro Devices, Inc.
> > + *
> > + * Permission is hereby granted, free of charge, to any person
> > +obtaining a
> > + * copy of this software and associated documentation files (the
> > +"Software"),
> > + * to deal in the Software without restriction, including without
> > +limitation
> > + * the rights to use, copy, modify, merge, publish, distribute,
> > +sublicense,
> > + * and/or sell copies of the Software, and to permit persons to whom
> > +the
> > + * Software is furnished to do so, subject to the following conditions:
> > + *
> > + * The above copyright notice and this permission notice shall be
> > +included in
> > + * all copies or substantial portions of the Software.
> > + *
> > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
> KIND,
> > +EXPRESS OR
> > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
> > +MERCHANTABILITY,
> > + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
> NO
> > EVENT
> > +SHALL
> > + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM,
> > +DAMAGES OR
> > + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
> > +OTHERWISE,
> > + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
> > THE USE
> > +OR
> > + * OTHER DEALINGS IN THE SOFTWARE.
> > + *
> > + * Authors: AMD
> > + *
> > + */
> > +
> > +#include "rc_calc_fpu.h"
> > +
> > +#include "qp_tables.h"
> > +#include "amdgpu_dm/dc_fpu.h"
> > +
> > +#define table_hash(mode, bpc, max_min) ((mode << 16) | (bpc << 8) |
> > +max_min)
> > +
> > +#define MODE_SELECT(val444, val422, val420) \
> > + (cm == CM_444 || cm == CM_RGB) ? (val444) : (cm == CM_422 ?
> > (val422) :
> > +(val420))
> > +
> > +
> > +#define TABLE_CASE(mode, bpc, max) case (table_hash(mode,
> > BPC_##bpc, max)): \
> > + table = qp_table_##mode##_##bpc##bpc_##max; \
> > + table_size =
> >
> sizeof(qp_table_##mode##_##bpc##bpc_##max)/sizeof(*qp_table_##mo
> > de##_##bpc##bpc_##max); \
> > + break
> > +
> > +static int median3(int a, int b, int c) {
> > + if (a > b)
> > + swap(a, b);
> > + if (b > c)
> > + swap(b, c);
> > + if (a > b)
> > + swap(b, c);
> > +
> > + return b;
> > +}
> > +
> > +static double dsc_roundf(double num)
> > +{
> > + if (num < 0.0)
> > + num = num - 0.5;
> > + else
> > + num = num + 0.5;
> > +
> > + return (int)(num);
> > +}
> > +
> > +static double dsc_ceil(double num)
> > +{
> > + double retval = (int)num;
> > +
> > + if (retval != num && num > 0)
> > + retval = num + 1;
> > +
> > + return (int)retval;
> > +}
> > +
> > +static void get_qp_set(qp_set qps, enum colour_mode cm, enum
> > bits_per_comp bpc,
> > + enum max_min max_min, float bpp) {
> > + int mode = MODE_SELECT(444, 422, 420);
> > + int sel = table_hash(mode, bpc, max_min);
> > + int table_size = 0;
> > + int index;
> > + const struct qp_entry *table = 0L;
> > +
> > + // alias enum
> > + enum { min = DAL_MM_MIN, max = DAL_MM_MAX };
> > + switch (sel) {
> > + TABLE_CASE(444, 8, max);
> > + TABLE_CASE(444, 8, min);
> > + TABLE_CASE(444, 10, max);
> > + TABLE_CASE(444, 10, min);
> > + TABLE_CASE(444, 12, max);
> > + TABLE_CASE(444, 12, min);
> > + TABLE_CASE(422, 8, max);
> > + TABLE_CASE(422, 8, min);
> > + TABLE_CASE(422, 10, max);
> > + TABLE_CASE(422, 10, min);
> > + TABLE_CASE(422, 12, max);
> > + TABLE_CASE(422, 12, min);
> > + TABLE_CASE(420, 8, max);
> > + TABLE_CASE(420, 8, min);
> > + TABLE_CASE(420, 10, max);
> > + TABLE_CASE(420, 10, min);
> > + TABLE_CASE(420, 12, max);
> > + TABLE_CASE(420, 12, min);
> > + }
> > +
> > + if (table == 0)
> > + return;
> > +
> > + index = (bpp - table[0].bpp) * 2;
> > +
> > + /* requested size is bigger than the table */
> > + if (index >= table_size) {
> > + dm_error("ERROR: Requested rc_calc to find a bpp entry that
> > exceeds the table size\n");
> > + return;
> > + }
> > +
> > + memcpy(qps, table[index].qps, sizeof(qp_set)); }
> > +
> > +static void get_ofs_set(qp_set ofs, enum colour_mode mode, float bpp) {
> > + int *p = ofs;
> > +
> > + if (mode == CM_444 || mode == CM_RGB) {
> > + *p++ = (bpp <= 6) ? (0) : ((((bpp >= 8) && (bpp <= 12))) ? (2)
> > : ((bpp >= 15) ? (10) : ((((bpp > 6) && (bpp < 8))) ? (0 +
> > dsc_roundf((bpp - 6) *
> > (2 / 2.0))) : (2 + dsc_roundf((bpp - 12) * (8 / 3.0))))));
> > + *p++ = (bpp <= 6) ? (-2) : ((((bpp >= 8) && (bpp <= 12))) ? (0)
> > : ((bpp >= 15) ? (8) : ((((bpp > 6) && (bpp < 8))) ? (-2 +
> > dsc_roundf((bpp - 6) *
> > (2 / 2.0))) : (0 + dsc_roundf((bpp - 12) * (8 / 3.0))))));
> > + *p++ = (bpp <= 6) ? (-2) : ((((bpp >= 8) && (bpp <= 12))) ? (0)
> > : ((bpp >= 15) ? (6) : ((((bpp > 6) && (bpp < 8))) ? (-2 +
> > dsc_roundf((bpp - 6) *
> > (2 / 2.0))) : (0 + dsc_roundf((bpp - 12) * (6 / 3.0))))));
> > + *p++ = (bpp <= 6) ? (-4) : ((((bpp >= 8) && (bpp <= 12))) ? (-
> > 2) : ((bpp >= 15) ? (4) : ((((bpp > 6) && (bpp < 8))) ? (-4 +
> > dsc_roundf((bpp -
> > 6) * (2 / 2.0))) : (-2 + dsc_roundf((bpp - 12) * (6 / 3.0))))));
> > + *p++ = (bpp <= 6) ? (-6) : ((((bpp >= 8) && (bpp <= 12))) ? (-
> > 4) : ((bpp >= 15) ? (2) : ((((bpp > 6) && (bpp < 8))) ? (-6 +
> > dsc_roundf((bpp -
> > 6) * (2 / 2.0))) : (-4 + dsc_roundf((bpp - 12) * (6 / 3.0))))));
> > + *p++ = (bpp <= 12) ? (-6) : ((bpp >= 15) ? (0) : (-6 +
> > dsc_roundf((bpp - 12) * (6 / 3.0))));
> > + *p++ = (bpp <= 12) ? (-8) : ((bpp >= 15) ? (-2) : (-8 +
> > dsc_roundf((bpp - 12) * (6 / 3.0))));
> > + *p++ = (bpp <= 12) ? (-8) : ((bpp >= 15) ? (-4) : (-8 +
> > dsc_roundf((bpp - 12) * (4 / 3.0))));
> > + *p++ = (bpp <= 12) ? (-8) : ((bpp >= 15) ? (-6) : (-8 +
> > dsc_roundf((bpp - 12) * (2 / 3.0))));
> > + *p++ = (bpp <= 12) ? (-10) : ((bpp >= 15) ? (-8) : (-10 +
> > dsc_roundf((bpp - 12) * (2 / 3.0))));
> > + *p++ = -10;
> > + *p++ = (bpp <= 6) ? (-12) : ((bpp >= 8) ? (-10) : (-12 +
> > dsc_roundf((bpp - 6) * (2 / 2.0))));
> > + *p++ = -12;
> > + *p++ = -12;
> > + *p++ = -12;
> > + } else if (mode == CM_422) {
> > + *p++ = (bpp <= 8) ? (2) : ((bpp >= 10) ? (10) : (2 +
> > dsc_roundf((bpp - 8) * (8 / 2.0))));
> > + *p++ = (bpp <= 8) ? (0) : ((bpp >= 10) ? (8) : (0 +
> > dsc_roundf((bpp - 8) * (8 / 2.0))));
> > + *p++ = (bpp <= 8) ? (0) : ((bpp >= 10) ? (6) : (0 +
> > dsc_roundf((bpp - 8) * (6 / 2.0))));
> > + *p++ = (bpp <= 8) ? (-2) : ((bpp >= 10) ? (4) : (-2 +
> > dsc_roundf((bpp - 8) * (6 / 2.0))));
> > + *p++ = (bpp <= 8) ? (-4) : ((bpp >= 10) ? (2) : (-4 +
> > dsc_roundf((bpp - 8) * (6 / 2.0))));
> > + *p++ = (bpp <= 8) ? (-6) : ((bpp >= 10) ? (0) : (-6 +
> > dsc_roundf((bpp - 8) * (6 / 2.0))));
> > + *p++ = (bpp <= 8) ? (-8) : ((bpp >= 10) ? (-2) : (-8 +
> > dsc_roundf((bpp - 8) * (6 / 2.0))));
> > + *p++ = (bpp <= 8) ? (-8) : ((bpp >= 10) ? (-4) : (-8 +
> > dsc_roundf((bpp - 8) * (4 / 2.0))));
> > + *p++ = (bpp <= 8) ? (-8) : ((bpp >= 10) ? (-6) : (-8 +
> > dsc_roundf((bpp - 8) * (2 / 2.0))));
> > + *p++ = (bpp <= 8) ? (-10) : ((bpp >= 10) ? (-8) : (-10 +
> > dsc_roundf((bpp - 8) * (2 / 2.0))));
> > + *p++ = -10;
> > + *p++ = (bpp <= 6) ? (-12) : ((bpp >= 7) ? (-10) : (-12 +
> > dsc_roundf((bpp - 6) * (2.0 / 1))));
> > + *p++ = -12;
> > + *p++ = -12;
> > + *p++ = -12;
> > + } else {
> > + *p++ = (bpp <= 6) ? (2) : ((bpp >= 8) ? (10) : (2 +
> > dsc_roundf((bpp - 6) * (8 / 2.0))));
> > + *p++ = (bpp <= 6) ? (0) : ((bpp >= 8) ? (8) : (0 +
> > dsc_roundf((bpp - 6) * (8 / 2.0))));
> > + *p++ = (bpp <= 6) ? (0) : ((bpp >= 8) ? (6) : (0 +
> > dsc_roundf((bpp - 6) * (6 / 2.0))));
> > + *p++ = (bpp <= 6) ? (-2) : ((bpp >= 8) ? (4) : (-2 +
> > dsc_roundf((bpp - 6) * (6 / 2.0))));
> > + *p++ = (bpp <= 6) ? (-4) : ((bpp >= 8) ? (2) : (-4 +
> > dsc_roundf((bpp - 6) * (6 / 2.0))));
> > + *p++ = (bpp <= 6) ? (-6) : ((bpp >= 8) ? (0) : (-6 +
> > dsc_roundf((bpp - 6) * (6 / 2.0))));
> > + *p++ = (bpp <= 6) ? (-8) : ((bpp >= 8) ? (-2) : (-8 +
> > dsc_roundf((bpp - 6) * (6 / 2.0))));
> > + *p++ = (bpp <= 6) ? (-8) : ((bpp >= 8) ? (-4) : (-8 +
> > dsc_roundf((bpp - 6) * (4 / 2.0))));
> > + *p++ = (bpp <= 6) ? (-8) : ((bpp >= 8) ? (-6) : (-8 +
> > dsc_roundf((bpp - 6) * (2 / 2.0))));
> > + *p++ = (bpp <= 6) ? (-10) : ((bpp >= 8) ? (-8) : (-10 +
> > dsc_roundf((bpp - 6) * (2 / 2.0))));
> > + *p++ = -10;
> > + *p++ = (bpp <= 4) ? (-12) : ((bpp >= 5) ? (-10) : (-12 +
> > dsc_roundf((bpp - 4) * (2 / 1.0))));
> > + *p++ = -12;
> > + *p++ = -12;
> > + *p++ = -12;
> > + }
> > +}
> > +
> > +void _do_calc_rc_params(struct rc_params *rc,
> > + enum colour_mode cm,
> > + enum bits_per_comp bpc,
> > + u16 drm_bpp,
> > + bool is_navite_422_or_420,
> > + int slice_width,
> > + int slice_height,
> > + int minor_version)
> > +{
> > + float bpp;
> > + float bpp_group;
> > + float initial_xmit_delay_factor;
> > + int padding_pixels;
> > + int i;
> > +
> > + dc_assert_fp_enabled();
> > +
> > + bpp = ((float)drm_bpp / 16.0);
> > + /* in native_422 or native_420 modes, the bits_per_pixel is double
> > the
> > + * target bpp (the latter is what calc_rc_params expects)
> > + */
> > + if (is_navite_422_or_420)
> > + bpp /= 2.0;
> > +
> > + rc->rc_quant_incr_limit0 = ((bpc == BPC_8) ? 11 : (bpc == BPC_10 ?
> > +15
> > : 19)) - ((minor_version == 1 && cm == CM_444) ? 1 : 0);
> > + rc->rc_quant_incr_limit1 = ((bpc == BPC_8) ? 11 : (bpc == BPC_10 ?
> > +15
> > +: 19)) - ((minor_version == 1 && cm == CM_444) ? 1 : 0);
> > +
> > + bpp_group = MODE_SELECT(bpp, bpp * 2.0, bpp * 2.0);
> > +
> > + switch (cm) {
> > + case CM_420:
> > + rc->initial_fullness_offset = (bpp >= 6) ? (2048) : ((bpp <= 4)
> > ? (6144) : ((((bpp > 4) && (bpp <= 5))) ? (6144 - dsc_roundf((bpp -
> > 4) *
> > (512))) : (5632 - dsc_roundf((bpp - 5) * (3584)))));
> > + rc->first_line_bpg_offset = median3(0, (12 + (int) (0.09 *
> > min(34, slice_height - 8))), (int)((3 * bpc * 3) - (3 * bpp_group)));
> > + rc->second_line_bpg_offset = median3(0, 12, (int)((3 * bpc *
> > 3) - (3 * bpp_group)));
> > + break;
> > + case CM_422:
> > + rc->initial_fullness_offset = (bpp >= 8) ? (2048) : ((bpp <= 7)
> > ? (5632) : (5632 - dsc_roundf((bpp - 7) * (3584))));
> > + rc->first_line_bpg_offset = median3(0, (12 + (int) (0.09 *
> > min(34, slice_height - 8))), (int)((3 * bpc * 4) - (3 * bpp_group)));
> > + rc->second_line_bpg_offset = 0;
> > + break;
> > + case CM_444:
> > + case CM_RGB:
> > + rc->initial_fullness_offset = (bpp >= 12) ? (2048) : ((bpp <= 8)
> > ? (6144) : ((((bpp > 8) && (bpp <= 10))) ? (6144 - dsc_roundf((bpp -
> > 8) * (512 /
> > 2))) : (5632 - dsc_roundf((bpp - 10) * (3584 / 2)))));
> > + rc->first_line_bpg_offset = median3(0, (12 + (int) (0.09 *
> > min(34, slice_height - 8))), (int)(((3 * bpc + (cm == CM_444 ? 0 : 2))
> > * 3) - (3 * bpp_group)));
> > + rc->second_line_bpg_offset = 0;
> > + break;
> > + }
> > +
> > + initial_xmit_delay_factor = (cm == CM_444 || cm == CM_RGB) ? 1.0 :
> > 2.0;
> > + rc->initial_xmit_delay =
> > +dsc_roundf(8192.0/2.0/bpp/initial_xmit_delay_factor);
> > +
> > + if (cm == CM_422 || cm == CM_420)
> > + slice_width /= 2;
> > +
> > + padding_pixels = ((slice_width % 3) != 0) ? (3 - (slice_width % 3))
> > +*
> > (rc->initial_xmit_delay / slice_width) : 0;
> > + if (3 * bpp_group >= (((rc->initial_xmit_delay + 2) / 3) * (3 + (cm
> > +==
> > CM_422)))) {
> > + if ((rc->initial_xmit_delay + padding_pixels) % 3 == 1)
> > + rc->initial_xmit_delay++;
> > + }
> > +
> > + rc->flatness_min_qp = ((bpc == BPC_8) ? (3) : ((bpc == BPC_10) ?
> > (7) : (11))) - ((minor_version == 1 && cm == CM_444) ? 1 : 0);
> > + rc->flatness_max_qp = ((bpc == BPC_8) ? (12) : ((bpc == BPC_10) ?
> > (16) : (20))) - ((minor_version == 1 && cm == CM_444) ? 1 : 0);
> > + rc->flatness_det_thresh = 2 << (bpc - 8);
> > +
> > + get_qp_set(rc->qp_min, cm, bpc, DAL_MM_MIN, bpp);
> > + get_qp_set(rc->qp_max, cm, bpc, DAL_MM_MAX, bpp);
> > + if (cm == CM_444 && minor_version == 1) {
> > + for (i = 0; i < QP_SET_SIZE; ++i) {
> > + rc->qp_min[i] = rc->qp_min[i] > 0 ? rc->qp_min[i] - 1 :
> > 0;
> > + rc->qp_max[i] = rc->qp_max[i] > 0 ? rc->qp_max[i] -
> > 1 : 0;
> > + }
> > + }
> > + get_ofs_set(rc->ofs, cm, bpp);
> > +
> > + /* fixed parameters */
> > + rc->rc_model_size = 8192;
> > + rc->rc_edge_factor = 6;
> > + rc->rc_tgt_offset_hi = 3;
> > + rc->rc_tgt_offset_lo = 3;
> > +
> > + rc->rc_buf_thresh[0] = 896;
> > + rc->rc_buf_thresh[1] = 1792;
> > + rc->rc_buf_thresh[2] = 2688;
> > + rc->rc_buf_thresh[3] = 3584;
> > + rc->rc_buf_thresh[4] = 4480;
> > + rc->rc_buf_thresh[5] = 5376;
> > + rc->rc_buf_thresh[6] = 6272;
> > + rc->rc_buf_thresh[7] = 6720;
> > + rc->rc_buf_thresh[8] = 7168;
> > + rc->rc_buf_thresh[9] = 7616;
> > + rc->rc_buf_thresh[10] = 7744;
> > + rc->rc_buf_thresh[11] = 7872;
> > + rc->rc_buf_thresh[12] = 8000;
> > + rc->rc_buf_thresh[13] = 8064;
> > +}
> > +
> > +u32 _do_bytes_per_pixel_calc(int slice_width,
> > + u16 drm_bpp,
> > + bool is_navite_422_or_420)
> > +{
> > + float bpp;
> > + u32 bytes_per_pixel;
> > + double d_bytes_per_pixel;
> > +
> > + dc_assert_fp_enabled();
> > +
> > + bpp = ((float)drm_bpp / 16.0);
> > + d_bytes_per_pixel = dsc_ceil(bpp * slice_width / 8.0) / slice_width;
> > + // TODO: Make sure the formula for calculating this is precise (ceiling
> > + // vs. floor, and at what point they should be applied)
> > + if (is_navite_422_or_420)
> > + d_bytes_per_pixel /= 2;
> > +
> > + bytes_per_pixel = (u32)dsc_ceil(d_bytes_per_pixel * 0x10000000);
> > +
> > + return bytes_per_pixel;
> > +}
> > diff --git a/drivers/gpu/drm/amd/display/dc/dml/dsc/rc_calc_fpu.h
> > b/drivers/gpu/drm/amd/display/dc/dml/dsc/rc_calc_fpu.h
> > new file mode 100644
> > index 0000000000000..b93b95409fbe2
> > --- /dev/null
> > +++ b/drivers/gpu/drm/amd/display/dc/dml/dsc/rc_calc_fpu.h
> > @@ -0,0 +1,94 @@
> > +/*
> > + * Copyright 2021 Advanced Micro Devices, Inc.
> > + *
> > + * Permission is hereby granted, free of charge, to any person
> > +obtaining a
> > + * copy of this software and associated documentation files (the
> > +"Software"),
> > + * to deal in the Software without restriction, including without
> > +limitation
> > + * the rights to use, copy, modify, merge, publish, distribute,
> > +sublicense,
> > + * and/or sell copies of the Software, and to permit persons to whom
> > +the
> > + * Software is furnished to do so, subject to the following conditions:
> > + *
> > + * The above copyright notice and this permission notice shall be
> > +included in
> > + * all copies or substantial portions of the Software.
> > + *
> > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
> KIND,
> > +EXPRESS OR
> > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
> > +MERCHANTABILITY,
> > + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
> NO
> > EVENT
> > +SHALL
> > + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM,
> > +DAMAGES OR
> > + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
> > +OTHERWISE,
> > + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
> > THE USE
> > +OR
> > + * OTHER DEALINGS IN THE SOFTWARE.
> > + *
> > + * Authors: AMD
> > + *
> > + */
> > +
> > +#ifndef __RC_CALC_FPU_H__
> > +#define __RC_CALC_FPU_H__
> > +
> > +#include "os_types.h"
> > +#include <drm/drm_dsc.h>
> > +
> > +#define QP_SET_SIZE 15
> > +
> > +typedef int qp_set[QP_SET_SIZE];
> > +
> > +struct rc_params {
> > + int rc_quant_incr_limit0;
> > + int rc_quant_incr_limit1;
> > + int initial_fullness_offset;
> > + int initial_xmit_delay;
> > + int first_line_bpg_offset;
> > + int second_line_bpg_offset;
> > + int flatness_min_qp;
> > + int flatness_max_qp;
> > + int flatness_det_thresh;
> > + qp_set qp_min;
> > + qp_set qp_max;
> > + qp_set ofs;
> > + int rc_model_size;
> > + int rc_edge_factor;
> > + int rc_tgt_offset_hi;
> > + int rc_tgt_offset_lo;
> > + int rc_buf_thresh[QP_SET_SIZE - 1];
> > +};
> > +
> > +enum colour_mode {
> > + CM_RGB, /* 444 RGB */
> > + CM_444, /* 444 YUV or simple 422 */
> > + CM_422, /* native 422 */
> > + CM_420 /* native 420 */
> > +};
> > +
> > +enum bits_per_comp {
> > + BPC_8 = 8,
> > + BPC_10 = 10,
> > + BPC_12 = 12
> > +};
> > +
> > +enum max_min {
> > + DAL_MM_MIN = 0,
> > + DAL_MM_MAX = 1
> > +};
> > +
> > +struct qp_entry {
> > + float bpp;
> > + const qp_set qps;
> > +};
> > +
> > +typedef struct qp_entry qp_table[];
> > +
> > +u32 _do_bytes_per_pixel_calc(int slice_width,
> > + u16 drm_bpp,
> > + bool is_navite_422_or_420);
> > +
> > +void _do_calc_rc_params(struct rc_params *rc,
> > + enum colour_mode cm,
> > + enum bits_per_comp bpc,
> > + u16 drm_bpp,
> > + bool is_navite_422_or_420,
> > + int slice_width,
> > + int slice_height,
> > + int minor_version);
> > +
> > +#endif
> > diff --git a/drivers/gpu/drm/amd/display/dc/dsc/Makefile
> > b/drivers/gpu/drm/amd/display/dc/dsc/Makefile
> > index 8d31eb75c6a6e..a2537229ee88b 100644
> > --- a/drivers/gpu/drm/amd/display/dc/dsc/Makefile
> > +++ b/drivers/gpu/drm/amd/display/dc/dsc/Makefile
> > @@ -1,35 +1,6 @@
> > # SPDX-License-Identifier: MIT
> > #
> > # Makefile for the 'dsc' sub-component of DAL.
> > -
> > -ifdef CONFIG_X86
> > -dsc_ccflags := -mhard-float -msse
> > -endif
> > -
> > -ifdef CONFIG_PPC64
> > -dsc_ccflags := -mhard-float -maltivec -endif
> > -
> > -ifdef CONFIG_CC_IS_GCC
> > -ifeq ($(call cc-ifversion, -lt, 0701, y), y) -IS_OLD_GCC = 1 -endif
> > -endif
> > -
> > -ifdef CONFIG_X86
> > -ifdef IS_OLD_GCC
> > -# Stack alignment mismatch, proceed with caution.
> > -# GCC < 7.1 cannot compile code using `double` and -mpreferred-stack-
> > boundary=3 -# (8B stack alignment).
> > -dsc_ccflags += -mpreferred-stack-boundary=4 -else -dsc_ccflags +=
> > -msse2 - endif -endif
> > -
> > -CFLAGS_$(AMDDALPATH)/dc/dsc/rc_calc.o := $(dsc_ccflags) -
> > CFLAGS_REMOVE_$(AMDDALPATH)/dc/dsc/rc_calc.o := $(dsc_rcflags)
> > -
> > DSC = dc_dsc.o rc_calc.o rc_calc_dpi.o
> >
> > AMD_DAL_DSC = $(addprefix $(AMDDALPATH)/dc/dsc/,$(DSC)) diff --git
> > a/drivers/gpu/drm/amd/display/dc/dsc/rc_calc.c
> > b/drivers/gpu/drm/amd/display/dc/dsc/rc_calc.c
> > index 7b294f637881a..b19d3aeb5962c 100644
> > --- a/drivers/gpu/drm/amd/display/dc/dsc/rc_calc.c
> > +++ b/drivers/gpu/drm/amd/display/dc/dsc/rc_calc.c
> > @@ -23,266 +23,7 @@
> > * Authors: AMD
> > *
> > */
> > -#include <drm/drm_dsc.h>
> > -
> > -#include "os_types.h"
> > #include "rc_calc.h"
> > -#include "qp_tables.h"
> > -
> > -#define table_hash(mode, bpc, max_min) ((mode << 16) | (bpc << 8) |
> > max_min)
> > -
> > -#define MODE_SELECT(val444, val422, val420) \
> > - (cm == CM_444 || cm == CM_RGB) ? (val444) : (cm == CM_422 ?
> > (val422) : (val420))
> > -
> > -
> > -#define TABLE_CASE(mode, bpc, max) case (table_hash(mode,
> > BPC_##bpc, max)): \
> > - table = qp_table_##mode##_##bpc##bpc_##max; \
> > - table_size =
> >
> sizeof(qp_table_##mode##_##bpc##bpc_##max)/sizeof(*qp_table_##mo
> > de##_##bpc##bpc_##max); \
> > - break
> > -
> > -
> > -static void get_qp_set(qp_set qps, enum colour_mode cm, enum
> > bits_per_comp bpc,
> > - enum max_min max_min, float bpp)
> > -{
> > - int mode = MODE_SELECT(444, 422, 420);
> > - int sel = table_hash(mode, bpc, max_min);
> > - int table_size = 0;
> > - int index;
> > - const struct qp_entry *table = 0L;
> > -
> > - // alias enum
> > - enum { min = DAL_MM_MIN, max = DAL_MM_MAX };
> > - switch (sel) {
> > - TABLE_CASE(444, 8, max);
> > - TABLE_CASE(444, 8, min);
> > - TABLE_CASE(444, 10, max);
> > - TABLE_CASE(444, 10, min);
> > - TABLE_CASE(444, 12, max);
> > - TABLE_CASE(444, 12, min);
> > - TABLE_CASE(422, 8, max);
> > - TABLE_CASE(422, 8, min);
> > - TABLE_CASE(422, 10, max);
> > - TABLE_CASE(422, 10, min);
> > - TABLE_CASE(422, 12, max);
> > - TABLE_CASE(422, 12, min);
> > - TABLE_CASE(420, 8, max);
> > - TABLE_CASE(420, 8, min);
> > - TABLE_CASE(420, 10, max);
> > - TABLE_CASE(420, 10, min);
> > - TABLE_CASE(420, 12, max);
> > - TABLE_CASE(420, 12, min);
> > - }
> > -
> > - if (table == 0)
> > - return;
> > -
> > - index = (bpp - table[0].bpp) * 2;
> > -
> > - /* requested size is bigger than the table */
> > - if (index >= table_size) {
> > - dm_error("ERROR: Requested rc_calc to find a bpp entry that
> > exceeds the table size\n");
> > - return;
> > - }
> > -
> > - memcpy(qps, table[index].qps, sizeof(qp_set));
> > -}
> > -
> > -static double dsc_roundf(double num)
> > -{
> > - if (num < 0.0)
> > - num = num - 0.5;
> > - else
> > - num = num + 0.5;
> > -
> > - return (int)(num);
> > -}
> > -
> > -static double dsc_ceil(double num)
> > -{
> > - double retval = (int)num;
> > -
> > - if (retval != num && num > 0)
> > - retval = num + 1;
> > -
> > - return (int)retval;
> > -}
> > -
> > -static void get_ofs_set(qp_set ofs, enum colour_mode mode, float bpp) -
> {
> > - int *p = ofs;
> > -
> > - if (mode == CM_444 || mode == CM_RGB) {
> > - *p++ = (bpp <= 6) ? (0) : ((((bpp >= 8) && (bpp <= 12))) ? (2)
> > : ((bpp >= 15) ? (10) : ((((bpp > 6) && (bpp < 8))) ? (0 +
> > dsc_roundf((bpp - 6) *
> > (2 / 2.0))) : (2 + dsc_roundf((bpp - 12) * (8 / 3.0))))));
> > - *p++ = (bpp <= 6) ? (-2) : ((((bpp >= 8) && (bpp <= 12))) ? (0)
> > : ((bpp >= 15) ? (8) : ((((bpp > 6) && (bpp < 8))) ? (-2 +
> > dsc_roundf((bpp - 6) *
> > (2 / 2.0))) : (0 + dsc_roundf((bpp - 12) * (8 / 3.0))))));
> > - *p++ = (bpp <= 6) ? (-2) : ((((bpp >= 8) && (bpp <= 12))) ? (0)
> > : ((bpp >= 15) ? (6) : ((((bpp > 6) && (bpp < 8))) ? (-2 +
> > dsc_roundf((bpp - 6) *
> > (2 / 2.0))) : (0 + dsc_roundf((bpp - 12) * (6 / 3.0))))));
> > - *p++ = (bpp <= 6) ? (-4) : ((((bpp >= 8) && (bpp <= 12))) ? (-
> > 2) : ((bpp >= 15) ? (4) : ((((bpp > 6) && (bpp < 8))) ? (-4 +
> > dsc_roundf((bpp -
> > 6) * (2 / 2.0))) : (-2 + dsc_roundf((bpp - 12) * (6 / 3.0))))));
> > - *p++ = (bpp <= 6) ? (-6) : ((((bpp >= 8) && (bpp <= 12))) ? (-
> > 4) : ((bpp >= 15) ? (2) : ((((bpp > 6) && (bpp < 8))) ? (-6 +
> > dsc_roundf((bpp -
> > 6) * (2 / 2.0))) : (-4 + dsc_roundf((bpp - 12) * (6 / 3.0))))));
> > - *p++ = (bpp <= 12) ? (-6) : ((bpp >= 15) ? (0) : (-6 +
> > dsc_roundf((bpp - 12) * (6 / 3.0))));
> > - *p++ = (bpp <= 12) ? (-8) : ((bpp >= 15) ? (-2) : (-8 +
> > dsc_roundf((bpp - 12) * (6 / 3.0))));
> > - *p++ = (bpp <= 12) ? (-8) : ((bpp >= 15) ? (-4) : (-8 +
> > dsc_roundf((bpp - 12) * (4 / 3.0))));
> > - *p++ = (bpp <= 12) ? (-8) : ((bpp >= 15) ? (-6) : (-8 +
> > dsc_roundf((bpp - 12) * (2 / 3.0))));
> > - *p++ = (bpp <= 12) ? (-10) : ((bpp >= 15) ? (-8) : (-10 +
> > dsc_roundf((bpp - 12) * (2 / 3.0))));
> > - *p++ = -10;
> > - *p++ = (bpp <= 6) ? (-12) : ((bpp >= 8) ? (-10) : (-12 +
> > dsc_roundf((bpp - 6) * (2 / 2.0))));
> > - *p++ = -12;
> > - *p++ = -12;
> > - *p++ = -12;
> > - } else if (mode == CM_422) {
> > - *p++ = (bpp <= 8) ? (2) : ((bpp >= 10) ? (10) : (2 +
> > dsc_roundf((bpp - 8) * (8 / 2.0))));
> > - *p++ = (bpp <= 8) ? (0) : ((bpp >= 10) ? (8) : (0 +
> > dsc_roundf((bpp - 8) * (8 / 2.0))));
> > - *p++ = (bpp <= 8) ? (0) : ((bpp >= 10) ? (6) : (0 +
> > dsc_roundf((bpp - 8) * (6 / 2.0))));
> > - *p++ = (bpp <= 8) ? (-2) : ((bpp >= 10) ? (4) : (-2 +
> > dsc_roundf((bpp - 8) * (6 / 2.0))));
> > - *p++ = (bpp <= 8) ? (-4) : ((bpp >= 10) ? (2) : (-4 +
> > dsc_roundf((bpp - 8) * (6 / 2.0))));
> > - *p++ = (bpp <= 8) ? (-6) : ((bpp >= 10) ? (0) : (-6 +
> > dsc_roundf((bpp - 8) * (6 / 2.0))));
> > - *p++ = (bpp <= 8) ? (-8) : ((bpp >= 10) ? (-2) : (-8 +
> > dsc_roundf((bpp - 8) * (6 / 2.0))));
> > - *p++ = (bpp <= 8) ? (-8) : ((bpp >= 10) ? (-4) : (-8 +
> > dsc_roundf((bpp - 8) * (4 / 2.0))));
> > - *p++ = (bpp <= 8) ? (-8) : ((bpp >= 10) ? (-6) : (-8 +
> > dsc_roundf((bpp - 8) * (2 / 2.0))));
> > - *p++ = (bpp <= 8) ? (-10) : ((bpp >= 10) ? (-8) : (-10 +
> > dsc_roundf((bpp - 8) * (2 / 2.0))));
> > - *p++ = -10;
> > - *p++ = (bpp <= 6) ? (-12) : ((bpp >= 7) ? (-10) : (-12 +
> > dsc_roundf((bpp - 6) * (2.0 / 1))));
> > - *p++ = -12;
> > - *p++ = -12;
> > - *p++ = -12;
> > - } else {
> > - *p++ = (bpp <= 6) ? (2) : ((bpp >= 8) ? (10) : (2 +
> > dsc_roundf((bpp - 6) * (8 / 2.0))));
> > - *p++ = (bpp <= 6) ? (0) : ((bpp >= 8) ? (8) : (0 +
> > dsc_roundf((bpp - 6) * (8 / 2.0))));
> > - *p++ = (bpp <= 6) ? (0) : ((bpp >= 8) ? (6) : (0 +
> > dsc_roundf((bpp - 6) * (6 / 2.0))));
> > - *p++ = (bpp <= 6) ? (-2) : ((bpp >= 8) ? (4) : (-2 +
> > dsc_roundf((bpp - 6) * (6 / 2.0))));
> > - *p++ = (bpp <= 6) ? (-4) : ((bpp >= 8) ? (2) : (-4 +
> > dsc_roundf((bpp - 6) * (6 / 2.0))));
> > - *p++ = (bpp <= 6) ? (-6) : ((bpp >= 8) ? (0) : (-6 +
> > dsc_roundf((bpp - 6) * (6 / 2.0))));
> > - *p++ = (bpp <= 6) ? (-8) : ((bpp >= 8) ? (-2) : (-8 +
> > dsc_roundf((bpp - 6) * (6 / 2.0))));
> > - *p++ = (bpp <= 6) ? (-8) : ((bpp >= 8) ? (-4) : (-8 +
> > dsc_roundf((bpp - 6) * (4 / 2.0))));
> > - *p++ = (bpp <= 6) ? (-8) : ((bpp >= 8) ? (-6) : (-8 +
> > dsc_roundf((bpp - 6) * (2 / 2.0))));
> > - *p++ = (bpp <= 6) ? (-10) : ((bpp >= 8) ? (-8) : (-10 +
> > dsc_roundf((bpp - 6) * (2 / 2.0))));
> > - *p++ = -10;
> > - *p++ = (bpp <= 4) ? (-12) : ((bpp >= 5) ? (-10) : (-12 +
> > dsc_roundf((bpp - 4) * (2 / 1.0))));
> > - *p++ = -12;
> > - *p++ = -12;
> > - *p++ = -12;
> > - }
> > -}
> > -
> > -static int median3(int a, int b, int c) -{
> > - if (a > b)
> > - swap(a, b);
> > - if (b > c)
> > - swap(b, c);
> > - if (a > b)
> > - swap(b, c);
> > -
> > - return b;
> > -}
> > -
> > -static void _do_calc_rc_params(struct rc_params *rc, enum colour_mode
> > cm,
> > - enum bits_per_comp bpc, u16 drm_bpp,
> > - bool is_navite_422_or_420,
> > - int slice_width, int slice_height,
> > - int minor_version)
> > -{
> > - float bpp;
> > - float bpp_group;
> > - float initial_xmit_delay_factor;
> > - int padding_pixels;
> > - int i;
> > -
> > - bpp = ((float)drm_bpp / 16.0);
> > - /* in native_422 or native_420 modes, the bits_per_pixel is double
> > the
> > - * target bpp (the latter is what calc_rc_params expects)
> > - */
> > - if (is_navite_422_or_420)
> > - bpp /= 2.0;
> > -
> > - rc->rc_quant_incr_limit0 = ((bpc == BPC_8) ? 11 : (bpc == BPC_10 ? 15
> > : 19)) - ((minor_version == 1 && cm == CM_444) ? 1 : 0);
> > - rc->rc_quant_incr_limit1 = ((bpc == BPC_8) ? 11 : (bpc == BPC_10 ? 15
> > : 19)) - ((minor_version == 1 && cm == CM_444) ? 1 : 0);
> > -
> > - bpp_group = MODE_SELECT(bpp, bpp * 2.0, bpp * 2.0);
> > -
> > - switch (cm) {
> > - case CM_420:
> > - rc->initial_fullness_offset = (bpp >= 6) ? (2048) : ((bpp <= 4)
> > ? (6144) : ((((bpp > 4) && (bpp <= 5))) ? (6144 - dsc_roundf((bpp -
> > 4) *
> > (512))) : (5632 - dsc_roundf((bpp - 5) * (3584)))));
> > - rc->first_line_bpg_offset = median3(0, (12 + (int) (0.09 *
> > min(34, slice_height - 8))), (int)((3 * bpc * 3) - (3 * bpp_group)));
> > - rc->second_line_bpg_offset = median3(0, 12, (int)((3 * bpc *
> > 3) - (3 * bpp_group)));
> > - break;
> > - case CM_422:
> > - rc->initial_fullness_offset = (bpp >= 8) ? (2048) : ((bpp <= 7)
> > ? (5632) : (5632 - dsc_roundf((bpp - 7) * (3584))));
> > - rc->first_line_bpg_offset = median3(0, (12 + (int) (0.09 *
> > min(34, slice_height - 8))), (int)((3 * bpc * 4) - (3 * bpp_group)));
> > - rc->second_line_bpg_offset = 0;
> > - break;
> > - case CM_444:
> > - case CM_RGB:
> > - rc->initial_fullness_offset = (bpp >= 12) ? (2048) : ((bpp <= 8)
> > ? (6144) : ((((bpp > 8) && (bpp <= 10))) ? (6144 - dsc_roundf((bpp -
> > 8) * (512 /
> > 2))) : (5632 - dsc_roundf((bpp - 10) * (3584 / 2)))));
> > - rc->first_line_bpg_offset = median3(0, (12 + (int) (0.09 *
> > min(34, slice_height - 8))), (int)(((3 * bpc + (cm == CM_444 ? 0 : 2))
> > * 3) - (3 * bpp_group)));
> > - rc->second_line_bpg_offset = 0;
> > - break;
> > - }
> > -
> > - initial_xmit_delay_factor = (cm == CM_444 || cm == CM_RGB) ? 1.0 :
> > 2.0;
> > - rc->initial_xmit_delay =
> > dsc_roundf(8192.0/2.0/bpp/initial_xmit_delay_factor);
> > -
> > - if (cm == CM_422 || cm == CM_420)
> > - slice_width /= 2;
> > -
> > - padding_pixels = ((slice_width % 3) != 0) ? (3 - (slice_width % 3)) *
> > (rc->initial_xmit_delay / slice_width) : 0;
> > - if (3 * bpp_group >= (((rc->initial_xmit_delay + 2) / 3) * (3 + (cm ==
> > CM_422)))) {
> > - if ((rc->initial_xmit_delay + padding_pixels) % 3 == 1)
> > - rc->initial_xmit_delay++;
> > - }
> > -
> > - rc->flatness_min_qp = ((bpc == BPC_8) ? (3) : ((bpc == BPC_10) ?
> > (7) : (11))) - ((minor_version == 1 && cm == CM_444) ? 1 : 0);
> > - rc->flatness_max_qp = ((bpc == BPC_8) ? (12) : ((bpc == BPC_10) ?
> > (16) : (20))) - ((minor_version == 1 && cm == CM_444) ? 1 : 0);
> > - rc->flatness_det_thresh = 2 << (bpc - 8);
> > -
> > - get_qp_set(rc->qp_min, cm, bpc, DAL_MM_MIN, bpp);
> > - get_qp_set(rc->qp_max, cm, bpc, DAL_MM_MAX, bpp);
> > - if (cm == CM_444 && minor_version == 1) {
> > - for (i = 0; i < QP_SET_SIZE; ++i) {
> > - rc->qp_min[i] = rc->qp_min[i] > 0 ? rc->qp_min[i] - 1 :
> > 0;
> > - rc->qp_max[i] = rc->qp_max[i] > 0 ? rc->qp_max[i] -
> > 1 : 0;
> > - }
> > - }
> > - get_ofs_set(rc->ofs, cm, bpp);
> > -
> > - /* fixed parameters */
> > - rc->rc_model_size = 8192;
> > - rc->rc_edge_factor = 6;
> > - rc->rc_tgt_offset_hi = 3;
> > - rc->rc_tgt_offset_lo = 3;
> > -
> > - rc->rc_buf_thresh[0] = 896;
> > - rc->rc_buf_thresh[1] = 1792;
> > - rc->rc_buf_thresh[2] = 2688;
> > - rc->rc_buf_thresh[3] = 3584;
> > - rc->rc_buf_thresh[4] = 4480;
> > - rc->rc_buf_thresh[5] = 5376;
> > - rc->rc_buf_thresh[6] = 6272;
> > - rc->rc_buf_thresh[7] = 6720;
> > - rc->rc_buf_thresh[8] = 7168;
> > - rc->rc_buf_thresh[9] = 7616;
> > - rc->rc_buf_thresh[10] = 7744;
> > - rc->rc_buf_thresh[11] = 7872;
> > - rc->rc_buf_thresh[12] = 8000;
> > - rc->rc_buf_thresh[13] = 8064;
> > -}
> > -
> > -static u32 _do_bytes_per_pixel_calc(int slice_width, u16 drm_bpp,
> > - bool is_navite_422_or_420)
> > -{
> > - float bpp;
> > - u32 bytes_per_pixel;
> > - double d_bytes_per_pixel;
> > -
> > - bpp = ((float)drm_bpp / 16.0);
> > - d_bytes_per_pixel = dsc_ceil(bpp * slice_width / 8.0) / slice_width;
> > - // TODO: Make sure the formula for calculating this is precise (ceiling
> > - // vs. floor, and at what point they should be applied)
> > - if (is_navite_422_or_420)
> > - d_bytes_per_pixel /= 2;
> > -
> > - bytes_per_pixel = (u32)dsc_ceil(d_bytes_per_pixel * 0x10000000);
> > -
> > - return bytes_per_pixel;
> > -}
> >
> > /**
> > * calc_rc_params - reads the user's cmdline mode diff --git
> > a/drivers/gpu/drm/amd/display/dc/dsc/rc_calc.h
> > b/drivers/gpu/drm/amd/display/dc/dsc/rc_calc.h
> > index 262f06afcbf95..c2340e001b578 100644
> > --- a/drivers/gpu/drm/amd/display/dc/dsc/rc_calc.h
> > +++ b/drivers/gpu/drm/amd/display/dc/dsc/rc_calc.h
> > @@ -27,55 +27,7 @@
> > #ifndef __RC_CALC_H__
> > #define __RC_CALC_H__
> >
> > -
> > -#define QP_SET_SIZE 15
> > -
> > -typedef int qp_set[QP_SET_SIZE];
> > -
> > -struct rc_params {
> > - int rc_quant_incr_limit0;
> > - int rc_quant_incr_limit1;
> > - int initial_fullness_offset;
> > - int initial_xmit_delay;
> > - int first_line_bpg_offset;
> > - int second_line_bpg_offset;
> > - int flatness_min_qp;
> > - int flatness_max_qp;
> > - int flatness_det_thresh;
> > - qp_set qp_min;
> > - qp_set qp_max;
> > - qp_set ofs;
> > - int rc_model_size;
> > - int rc_edge_factor;
> > - int rc_tgt_offset_hi;
> > - int rc_tgt_offset_lo;
> > - int rc_buf_thresh[QP_SET_SIZE - 1];
> > -};
> > -
> > -enum colour_mode {
> > - CM_RGB, /* 444 RGB */
> > - CM_444, /* 444 YUV or simple 422 */
> > - CM_422, /* native 422 */
> > - CM_420 /* native 420 */
> > -};
> > -
> > -enum bits_per_comp {
> > - BPC_8 = 8,
> > - BPC_10 = 10,
> > - BPC_12 = 12
> > -};
> > -
> > -enum max_min {
> > - DAL_MM_MIN = 0,
> > - DAL_MM_MAX = 1
> > -};
> > -
> > -struct qp_entry {
> > - float bpp;
> > - const qp_set qps;
> > -};
> > -
> > -typedef struct qp_entry qp_table[];
> > +#include "dml/dsc/rc_calc_fpu.h"
> >
> > void calc_rc_params(struct rc_params *rc, const struct drm_dsc_config
> > *pps);
> > u32 calc_dsc_bytes_per_pixel(const struct drm_dsc_config *pps); diff
> > --git a/drivers/gpu/drm/amd/display/dc/dsc/rc_calc_dpi.c
> > b/drivers/gpu/drm/amd/display/dc/dsc/rc_calc_dpi.c
> > index ef830aded5b1c..1e19dd674e5a2 100644
> > --- a/drivers/gpu/drm/amd/display/dc/dsc/rc_calc_dpi.c
> > +++ b/drivers/gpu/drm/amd/display/dc/dsc/rc_calc_dpi.c
> > @@ -22,7 +22,6 @@
> > * Authors: AMD
> > *
> > */
> > -#include "os_types.h"
> > #include <drm/drm_dsc.h>
> > #include "dscc_types.h"
> > #include "rc_calc.h"
> > --
> > 2.34.1
> >
> >