From 6e378858df1df362d8db814666d0caa0703087a3 Mon Sep 17 00:00:00 2001 From: Eric Huang Date: Tue, 10 Nov 2015 10:50:25 -0500 Subject: [PATCH] drm/amd/amdgpu: add gfx clock gating support for Fiji. Reviewed-by: Alex Deucher Reviewed-by: Jammy Zhou Signed-off-by: Eric Huang --- drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 254 ++++++++++++++++++++++++++ 1 file changed, 254 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c index 6c063a4a2c38..13235d84e5a6 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c @@ -66,6 +66,27 @@ #define MACRO_TILE_ASPECT(x) ((x) << GB_MACROTILE_MODE0__MACRO_TILE_ASPECT__SHIFT) #define NUM_BANKS(x) ((x) << GB_MACROTILE_MODE0__NUM_BANKS__SHIFT) +#define RLC_CGTT_MGCG_OVERRIDE__CPF_MASK 0x00000001L +#define RLC_CGTT_MGCG_OVERRIDE__RLC_MASK 0x00000002L +#define RLC_CGTT_MGCG_OVERRIDE__MGCG_MASK 0x00000004L +#define RLC_CGTT_MGCG_OVERRIDE__CGCG_MASK 0x00000008L +#define RLC_CGTT_MGCG_OVERRIDE__CGLS_MASK 0x00000010L +#define RLC_CGTT_MGCG_OVERRIDE__GRBM_MASK 0x00000020L + +/* BPM SERDES CMD */ +#define SET_BPM_SERDES_CMD 1 +#define CLE_BPM_SERDES_CMD 0 + +/* BPM Register Address*/ +enum { + BPM_REG_CGLS_EN = 0, /* Enable/Disable CGLS */ + BPM_REG_CGLS_ON, /* ON/OFF CGLS: shall be controlled by RLC FW */ + BPM_REG_CGCG_OVERRIDE, /* Set/Clear CGCG Override */ + BPM_REG_MGCG_OVERRIDE, /* Set/Clear MGCG Override */ + BPM_REG_FGCG_OVERRIDE, /* Set/Clear FGCG Override */ + BPM_REG_FGCG_MAX +}; + MODULE_FIRMWARE("amdgpu/carrizo_ce.bin"); MODULE_FIRMWARE("amdgpu/carrizo_pfp.bin"); MODULE_FIRMWARE("amdgpu/carrizo_me.bin"); @@ -4301,9 +4322,242 @@ static int gfx_v8_0_set_powergating_state(void *handle, return 0; } +static void fiji_send_serdes_cmd(struct amdgpu_device *adev, + uint32_t reg_addr, uint32_t cmd) +{ + uint32_t data; + + gfx_v8_0_select_se_sh(adev, 0xffffffff, 0xffffffff); + + WREG32(mmRLC_SERDES_WR_CU_MASTER_MASK, 0xffffffff); + WREG32(mmRLC_SERDES_WR_NONCU_MASTER_MASK, 0xffffffff); + + data = RREG32(mmRLC_SERDES_WR_CTRL); + data &= ~(RLC_SERDES_WR_CTRL__WRITE_COMMAND_MASK | + RLC_SERDES_WR_CTRL__READ_COMMAND_MASK | + RLC_SERDES_WR_CTRL__P1_SELECT_MASK | + RLC_SERDES_WR_CTRL__P2_SELECT_MASK | + RLC_SERDES_WR_CTRL__RDDATA_RESET_MASK | + RLC_SERDES_WR_CTRL__POWER_DOWN_MASK | + RLC_SERDES_WR_CTRL__POWER_UP_MASK | + RLC_SERDES_WR_CTRL__SHORT_FORMAT_MASK | + RLC_SERDES_WR_CTRL__BPM_DATA_MASK | + RLC_SERDES_WR_CTRL__REG_ADDR_MASK | + RLC_SERDES_WR_CTRL__SRBM_OVERRIDE_MASK); + data |= (RLC_SERDES_WR_CTRL__RSVD_BPM_ADDR_MASK | + (cmd << RLC_SERDES_WR_CTRL__BPM_DATA__SHIFT) | + (reg_addr << RLC_SERDES_WR_CTRL__REG_ADDR__SHIFT) | + (0xff << RLC_SERDES_WR_CTRL__BPM_ADDR__SHIFT)); + + WREG32(mmRLC_SERDES_WR_CTRL, data); +} + +static void fiji_update_medium_grain_clock_gating(struct amdgpu_device *adev, + bool enable) +{ + uint32_t temp, data; + + /* It is disabled by HW by default */ + if (enable) { + /* 1 - RLC memory Light sleep */ + temp = data = RREG32(mmRLC_MEM_SLP_CNTL); + data |= RLC_MEM_SLP_CNTL__RLC_MEM_LS_EN_MASK; + if (temp != data) + WREG32(mmRLC_MEM_SLP_CNTL, data); + + /* 2 - CP memory Light sleep */ + temp = data = RREG32(mmCP_MEM_SLP_CNTL); + data |= CP_MEM_SLP_CNTL__CP_MEM_LS_EN_MASK; + if (temp != data) + WREG32(mmCP_MEM_SLP_CNTL, data); + + /* 3 - RLC_CGTT_MGCG_OVERRIDE */ + temp = data = RREG32(mmRLC_CGTT_MGCG_OVERRIDE); + data &= ~(RLC_CGTT_MGCG_OVERRIDE__CPF_MASK | + RLC_CGTT_MGCG_OVERRIDE__RLC_MASK | + RLC_CGTT_MGCG_OVERRIDE__MGCG_MASK | + RLC_CGTT_MGCG_OVERRIDE__GRBM_MASK); + + if (temp != data) + WREG32(mmRLC_CGTT_MGCG_OVERRIDE, data); + + /* 4 - wait for RLC_SERDES_CU_MASTER & RLC_SERDES_NONCU_MASTER idle */ + gfx_v8_0_wait_for_rlc_serdes(adev); + + /* 5 - clear mgcg override */ + fiji_send_serdes_cmd(adev, BPM_REG_MGCG_OVERRIDE, CLE_BPM_SERDES_CMD); + + /* 6 - Enable CGTS(Tree Shade) MGCG /MGLS */ + temp = data = RREG32(mmCGTS_SM_CTRL_REG); + data &= ~(CGTS_SM_CTRL_REG__SM_MODE_MASK); + data |= (0x2 << CGTS_SM_CTRL_REG__SM_MODE__SHIFT); + data |= CGTS_SM_CTRL_REG__SM_MODE_ENABLE_MASK; + data &= ~CGTS_SM_CTRL_REG__OVERRIDE_MASK; + data &= ~CGTS_SM_CTRL_REG__LS_OVERRIDE_MASK; + data |= CGTS_SM_CTRL_REG__ON_MONITOR_ADD_EN_MASK; + data |= (0x96 << CGTS_SM_CTRL_REG__ON_MONITOR_ADD__SHIFT); + if (temp != data) + WREG32(mmCGTS_SM_CTRL_REG, data); + udelay(50); + + /* 7 - wait for RLC_SERDES_CU_MASTER & RLC_SERDES_NONCU_MASTER idle */ + gfx_v8_0_wait_for_rlc_serdes(adev); + } else { + /* 1 - MGCG_OVERRIDE[0] for CP and MGCG_OVERRIDE[1] for RLC */ + temp = data = RREG32(mmRLC_CGTT_MGCG_OVERRIDE); + data |= (RLC_CGTT_MGCG_OVERRIDE__CPF_MASK | + RLC_CGTT_MGCG_OVERRIDE__RLC_MASK | + RLC_CGTT_MGCG_OVERRIDE__MGCG_MASK | + RLC_CGTT_MGCG_OVERRIDE__GRBM_MASK); + if (temp != data) + WREG32(mmRLC_CGTT_MGCG_OVERRIDE, data); + + /* 2 - disable MGLS in RLC */ + data = RREG32(mmRLC_MEM_SLP_CNTL); + if (data & RLC_MEM_SLP_CNTL__RLC_MEM_LS_EN_MASK) { + data &= ~RLC_MEM_SLP_CNTL__RLC_MEM_LS_EN_MASK; + WREG32(mmRLC_MEM_SLP_CNTL, data); + } + + /* 3 - disable MGLS in CP */ + data = RREG32(mmCP_MEM_SLP_CNTL); + if (data & CP_MEM_SLP_CNTL__CP_MEM_LS_EN_MASK) { + data &= ~CP_MEM_SLP_CNTL__CP_MEM_LS_EN_MASK; + WREG32(mmCP_MEM_SLP_CNTL, data); + } + + /* 4 - Disable CGTS(Tree Shade) MGCG and MGLS */ + temp = data = RREG32(mmCGTS_SM_CTRL_REG); + data |= (CGTS_SM_CTRL_REG__OVERRIDE_MASK | + CGTS_SM_CTRL_REG__LS_OVERRIDE_MASK); + if (temp != data) + WREG32(mmCGTS_SM_CTRL_REG, data); + + /* 5 - wait for RLC_SERDES_CU_MASTER & RLC_SERDES_NONCU_MASTER idle */ + gfx_v8_0_wait_for_rlc_serdes(adev); + + /* 6 - set mgcg override */ + fiji_send_serdes_cmd(adev, BPM_REG_MGCG_OVERRIDE, SET_BPM_SERDES_CMD); + + udelay(50); + + /* 7- wait for RLC_SERDES_CU_MASTER & RLC_SERDES_NONCU_MASTER idle */ + gfx_v8_0_wait_for_rlc_serdes(adev); + } +} + +static void fiji_update_coarse_grain_clock_gating(struct amdgpu_device *adev, + bool enable) +{ + uint32_t temp, temp1, data, data1; + + temp = data = RREG32(mmRLC_CGCG_CGLS_CTRL); + + if (enable) { + /* 1 enable cntx_empty_int_enable/cntx_busy_int_enable/ + * Cmp_busy/GFX_Idle interrupts + */ + gfx_v8_0_enable_gui_idle_interrupt(adev, true); + + temp1 = data1 = RREG32(mmRLC_CGTT_MGCG_OVERRIDE); + data1 &= ~RLC_CGTT_MGCG_OVERRIDE__CGCG_MASK; + if (temp1 != data1) + WREG32(mmRLC_CGTT_MGCG_OVERRIDE, data1); + + /* 2 wait for RLC_SERDES_CU_MASTER & RLC_SERDES_NONCU_MASTER idle */ + gfx_v8_0_wait_for_rlc_serdes(adev); + + /* 3 - clear cgcg override */ + fiji_send_serdes_cmd(adev, BPM_REG_CGCG_OVERRIDE, CLE_BPM_SERDES_CMD); + + /* wait for RLC_SERDES_CU_MASTER & RLC_SERDES_NONCU_MASTER idle */ + gfx_v8_0_wait_for_rlc_serdes(adev); + + /* 4 - write cmd to set CGLS */ + fiji_send_serdes_cmd(adev, BPM_REG_CGLS_EN, SET_BPM_SERDES_CMD); + + /* 5 - enable cgcg */ + data |= RLC_CGCG_CGLS_CTRL__CGCG_EN_MASK; + + /* enable cgls*/ + data |= RLC_CGCG_CGLS_CTRL__CGLS_EN_MASK; + + temp1 = data1 = RREG32(mmRLC_CGTT_MGCG_OVERRIDE); + data1 &= ~RLC_CGTT_MGCG_OVERRIDE__CGLS_MASK; + + if (temp1 != data1) + WREG32(mmRLC_CGTT_MGCG_OVERRIDE, data1); + + if (temp != data) + WREG32(mmRLC_CGCG_CGLS_CTRL, data); + } else { + /* disable cntx_empty_int_enable & GFX Idle interrupt */ + gfx_v8_0_enable_gui_idle_interrupt(adev, false); + + /* TEST CGCG */ + temp1 = data1 = RREG32(mmRLC_CGTT_MGCG_OVERRIDE); + data1 |= (RLC_CGTT_MGCG_OVERRIDE__CGCG_MASK | + RLC_CGTT_MGCG_OVERRIDE__CGLS_MASK); + if (temp1 != data1) + WREG32(mmRLC_CGTT_MGCG_OVERRIDE, data1); + + /* read gfx register to wake up cgcg */ + RREG32(mmCB_CGTT_SCLK_CTRL); + RREG32(mmCB_CGTT_SCLK_CTRL); + RREG32(mmCB_CGTT_SCLK_CTRL); + RREG32(mmCB_CGTT_SCLK_CTRL); + + /* wait for RLC_SERDES_CU_MASTER & RLC_SERDES_NONCU_MASTER idle */ + gfx_v8_0_wait_for_rlc_serdes(adev); + + /* write cmd to Set CGCG Overrride */ + fiji_send_serdes_cmd(adev, BPM_REG_CGCG_OVERRIDE, SET_BPM_SERDES_CMD); + + /* wait for RLC_SERDES_CU_MASTER & RLC_SERDES_NONCU_MASTER idle */ + gfx_v8_0_wait_for_rlc_serdes(adev); + + /* write cmd to Clear CGLS */ + fiji_send_serdes_cmd(adev, BPM_REG_CGLS_EN, CLE_BPM_SERDES_CMD); + + /* disable cgcg, cgls should be disabled too. */ + data &= ~(RLC_CGCG_CGLS_CTRL__CGCG_EN_MASK | + RLC_CGCG_CGLS_CTRL__CGLS_EN_MASK); + if (temp != data) + WREG32(mmRLC_CGCG_CGLS_CTRL, data); + } +} +static int fiji_update_gfx_clock_gating(struct amdgpu_device *adev, + bool enable) +{ + if (enable) { + /* CGCG/CGLS should be enabled after MGCG/MGLS/TS(CG/LS) + * === MGCG + MGLS + TS(CG/LS) === + */ + fiji_update_medium_grain_clock_gating(adev, enable); + fiji_update_coarse_grain_clock_gating(adev, enable); + } else { + /* CGCG/CGLS should be disabled before MGCG/MGLS/TS(CG/LS) + * === CGCG + CGLS === + */ + fiji_update_coarse_grain_clock_gating(adev, enable); + fiji_update_medium_grain_clock_gating(adev, enable); + } + return 0; +} + static int gfx_v8_0_set_clockgating_state(void *handle, enum amd_clockgating_state state) { + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + switch (adev->asic_type) { + case CHIP_FIJI: + fiji_update_gfx_clock_gating(adev, + state == AMD_CG_STATE_GATE ? true : false); + break; + default: + break; + } return 0; } -- 2.20.1