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gpu/intel: add clock gating for kabylake

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issue #4254
This commit is contained in:
Alexander Boettcher 2021-08-12 13:51:33 +02:00 committed by Christian Helmuth
parent ee283c0d12
commit eab92f8d6f
2 changed files with 100 additions and 2 deletions
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11
repos/os/src/drivers/gpu/intel/main.cc
View File

@ -974,8 +974,7 @@ struct Igd::Device
_device_reset_and_init();
_mmio.dump();
_mmio.context_status_pointer_dump();
_clock_gating();
_mmio->dump();
_mmio->context_status_pointer_dump();
@ -1009,6 +1008,14 @@ struct Igd::Device
_timer.sigh(_watchdog_timeout_sigh);
}
void _clock_gating()
{
if (_info.platform == Device_info::Platform::KABYLAKE) {
_mmio->kbl_clock_gating();
} else
Genode::warning("no clock gating");
}
void _init_eu_total(uint8_t const max_slices,
uint8_t const max_subslices,
uint8_t const max_eus_per_subslice)

91
repos/os/src/drivers/gpu/intel/mmio.h
View File

@ -1350,6 +1350,97 @@ class Igd::Mmio : public Genode::Mmio
return result;
}
/******************
** clock gating **
******************/
/*
* gen9_init_clock_gating, lx 5.13
*/
struct CHICKEN_PAR1_1 : Register<0x42080, 32> {
struct SKL_DE_COMPRESSED_HASH_MODE : Bitfield<15, 1> {};
struct SKL_EDP_PSR_FIX_RDWRAP : Bitfield< 3, 1> {};
};
struct GEN8_CHICKEN_DCPR_1 : Register<0x46430, 32> {
struct MASK_WAKEMEM : Bitfield<13, 1> {};
};
struct DISP_ARB_CTL : Register<0x45000, 32> {
struct DISP_FBC_MEMORY_WAKE : Bitfield<31, 1> {};
struct DISP_FBC_WM_DIS : Bitfield<15, 1> {};
};
void gen9_clock_gating()
{
{
auto v = read<CHICKEN_PAR1_1>();
CHICKEN_PAR1_1::SKL_DE_COMPRESSED_HASH_MODE::set(v, 1);
write<CHICKEN_PAR1_1>(v);
}
{
auto v = read<CHICKEN_PAR1_1>();
CHICKEN_PAR1_1::SKL_EDP_PSR_FIX_RDWRAP::set(v, 1);
write<CHICKEN_PAR1_1>(v);
}
{
auto v = read<GEN8_CHICKEN_DCPR_1>();
GEN8_CHICKEN_DCPR_1::MASK_WAKEMEM::set(v, 1);
write<GEN8_CHICKEN_DCPR_1>(v);
}
{
auto v = read<DISP_ARB_CTL>();
DISP_ARB_CTL::DISP_FBC_MEMORY_WAKE::set(v, 1);
write<DISP_ARB_CTL>(v);
}
}
/*
* kbl_init_clock_gating, lx 5.13
*/
struct FBC_LLC_READ_CTRL : Register<0x09044, 32> {
struct FBC_LLC_FULLY_OPEN : Bitfield<30, 1> {};
};
struct ILK_DPFC_CHICKEN : Register<0x43224, 32> {
struct ILK_DPFC_NUKE_ON_ANY_MODIFICATION : Bitfield<23, 1> {};
};
void kbl_clock_gating()
{
gen9_clock_gating();
{
/* WAC6entrylatency:kbl */
auto v = read<FBC_LLC_READ_CTRL>();
FBC_LLC_READ_CTRL::FBC_LLC_FULLY_OPEN::set(v, 1);
write<FBC_LLC_READ_CTRL>(v);
}
/* WaDisableSDEUnitClockGating:kbl 0-STEP_B0 */
/* WaDisableGamClockGating:kbl 0-STEP_B0 */
{
/*
* WaFbcTurnOffFbcWatermark:kbl
* Display WA #0562: kbl
*/
auto v = read<DISP_ARB_CTL>();
DISP_ARB_CTL::DISP_FBC_WM_DIS::set(v, 1);
write<DISP_ARB_CTL>(v);
}
{
/*
* WaFbcNukeOnHostModify:kbl
* Display WA #0873: kbl
*/
auto v = read<ILK_DPFC_CHICKEN>();
ILK_DPFC_CHICKEN::ILK_DPFC_NUKE_ON_ANY_MODIFICATION::set(v, 1);
write<ILK_DPFC_CHICKEN>(v);
}
}
/*********************
** DEBUG interface **
*********************/