/*
* Copyright 2023 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.
*
*/
#include "amdgpu.h"
#include "amdgpu_atombios.h"
#include "hdp_v7_0.h"
#include "hdp/hdp_7_0_0_offset.h"
#include "hdp/hdp_7_0_0_sh_mask.h"
#include <uapi/linux/kfd_ioctl.h>
static void hdp_v7_0_flush_hdp(struct amdgpu_device *adev,
struct amdgpu_ring *ring)
{
if (!ring || !ring->funcs->emit_wreg)
WREG32((adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2, 0);
else
amdgpu_ring_emit_wreg(ring, (adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2, 0);
}
static void hdp_v7_0_update_clock_gating(struct amdgpu_device *adev,
bool enable)
{
uint32_t hdp_clk_cntl, hdp_clk_cntl1;
uint32_t hdp_mem_pwr_cntl;
if (!(adev->cg_flags & (AMD_CG_SUPPORT_HDP_LS |
AMD_CG_SUPPORT_HDP_DS |
AMD_CG_SUPPORT_HDP_SD)))
return;
hdp_clk_cntl = hdp_clk_cntl1 = RREG32_SOC15(HDP, 0,regHDP_CLK_CNTL);
hdp_mem_pwr_cntl = RREG32_SOC15(HDP, 0, regHDP_MEM_POWER_CTRL);
/* Before doing clock/power mode switch,
* forced on IPH & RC clock */
hdp_clk_cntl = REG_SET_FIELD(hdp_clk_cntl, HDP_CLK_CNTL,
RC_MEM_CLK_SOFT_OVERRIDE, 1);
WREG32_SOC15(HDP, 0, regHDP_CLK_CNTL, hdp_clk_cntl);
/* disable clock and power gating before any changing */
hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
ATOMIC_MEM_POWER_CTRL_EN, 0);
hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
ATOMIC_MEM_POWER_LS_EN, 0);
hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
ATOMIC_MEM_POWER_DS_EN, 0);
hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
ATOMIC_MEM_POWER_SD_EN, 0);
hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
RC_MEM_POWER_CTRL_EN, 0);
hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
RC_MEM_POWER_LS_EN, 0);
hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
RC_MEM_POWER_DS_EN, 0);
hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
RC_MEM_POWER_SD_EN, 0);
WREG32_SOC15(HDP, 0, regHDP_MEM_POWER_CTRL, hdp_mem_pwr_cntl);
/* Already disabled above. The actions below are for "enabled" only */
if (enable) {
/* only one clock gating mode (LS/DS/SD) can be enabled */
if (adev->cg_flags & AMD_CG_SUPPORT_HDP_SD) {
hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl,
HDP_MEM_POWER_CTRL,
ATOMIC_MEM_POWER_SD_EN, 1);
hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl,
HDP_MEM_POWER_CTRL,
RC_MEM_POWER_SD_EN, 1);
} else if (adev->cg_flags & AMD_CG_SUPPORT_HDP_LS) {
hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl,
HDP_MEM_POWER_CTRL,
ATOMIC_MEM_POWER_LS_EN, 1);
hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl,
HDP_MEM_POWER_CTRL,
RC_MEM_POWER_LS_EN, 1);
} else if (adev->cg_flags & AMD_CG_SUPPORT_HDP_DS) {
hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl,
HDP_MEM_POWER_CTRL,
ATOMIC_MEM_POWER_DS_EN, 1);
hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl,
HDP_MEM_POWER_CTRL,
RC_MEM_POWER_DS_EN, 1);
}
/* confirmed that IPH_MEM_POWER_CTRL_EN and RC_MEM_POWER_CTRL_EN have to
* be set for SRAM LS/DS/SD */
if (adev->cg_flags & (AMD_CG_SUPPORT_HDP_LS | AMD_CG_SUPPORT_HDP_DS |
AMD_CG_SUPPORT_HDP_SD)) {
hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
ATOMIC_MEM_POWER_CTRL_EN, 1);
hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
RC_MEM_POWER_CTRL_EN, 1);
WREG32_SOC15(HDP, 0, regHDP_MEM_POWER_CTRL, hdp_mem_pwr_cntl);
}
}
/* disable IPH & RC clock override after clock/power mode changing */
hdp_clk_cntl = REG_SET_FIELD(hdp_clk_cntl, HDP_CLK_CNTL,
RC_MEM_CLK_SOFT_OVERRIDE, 0);
WREG32_SOC15(HDP, 0, regHDP_CLK_CNTL, hdp_clk_cntl);
}
static void hdp_v7_0_get_clockgating_state(struct amdgpu_device *adev,
u64 *flags)
{
uint32_t tmp;
/* AMD_CG_SUPPORT_HDP_LS/DS/SD */
tmp = RREG32_SOC15(HDP, 0, regHDP_MEM_POWER_CTRL);
if (tmp & HDP_MEM_POWER_CTRL__ATOMIC_MEM_POWER_LS_EN_MASK)
*flags |= AMD_CG_SUPPORT_HDP_LS;
else if (tmp & HDP_MEM_POWER_CTRL__ATOMIC_MEM_POWER_DS_EN_MASK)
*flags |= AMD_CG_SUPPORT_HDP_DS;
else if (tmp & HDP_MEM_POWER_CTRL__ATOMIC_MEM_POWER_SD_EN_MASK)
*flags |= AMD_CG_SUPPORT_HDP_SD;
}
const struct amdgpu_hdp_funcs hdp_v7_0_funcs = {
.flush_hdp = hdp_v7_0_flush_hdp,
.update_clock_gating = hdp_v7_0_update_clock_gating,
.get_clock_gating_state = hdp_v7_0_get_clockgating_state,
};
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