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/*
* Copyright 2020 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_v4_0.h"
#include "amdgpu_ras.h"
#include "hdp/hdp_4_0_offset.h"
#include "hdp/hdp_4_0_sh_mask.h"
#include <uapi/linux/kfd_ioctl.h>
/* for Vega20 register name change */
#define mmHDP_MEM_POWER_CTRL 0x00d4
#define HDP_MEM_POWER_CTRL__IPH_MEM_POWER_CTRL_EN_MASK 0x00000001L
#define HDP_MEM_POWER_CTRL__IPH_MEM_POWER_LS_EN_MASK 0x00000002L
#define HDP_MEM_POWER_CTRL__RC_MEM_POWER_CTRL_EN_MASK 0x00010000L
#define HDP_MEM_POWER_CTRL__RC_MEM_POWER_LS_EN_MASK 0x00020000L
#define mmHDP_MEM_POWER_CTRL_BASE_IDX 0
static void hdp_v4_0_flush_hdp(struct amdgpu_device *adev,
struct amdgpu_ring *ring)
{
if (!ring || !ring->funcs->emit_wreg)
WREG32_NO_KIQ((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_v4_0_invalidate_hdp(struct amdgpu_device *adev,
struct amdgpu_ring *ring)
{
if (amdgpu_ip_version(adev, HDP_HWIP, 0) == IP_VERSION(4, 4, 0) ||
amdgpu_ip_version(adev, HDP_HWIP, 0) == IP_VERSION(4, 4, 2))
return;
if (!ring || !ring->funcs->emit_wreg)
WREG32_SOC15_NO_KIQ(HDP, 0, mmHDP_READ_CACHE_INVALIDATE, 1);
else
amdgpu_ring_emit_wreg(ring, SOC15_REG_OFFSET(
HDP, 0, mmHDP_READ_CACHE_INVALIDATE), 1);
}
static void hdp_v4_0_query_ras_error_count(struct amdgpu_device *adev,
void *ras_error_status)
{
struct ras_err_data *err_data = (struct ras_err_data *)ras_error_status;
err_data->ue_count = 0;
err_data->ce_count = 0;
if (!amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__HDP))
return;
/* HDP SRAM errors are uncorrectable ones (i.e. fatal errors) */
err_data->ue_count += RREG32_SOC15(HDP, 0, mmHDP_EDC_CNT);
};
static void hdp_v4_0_reset_ras_error_count(struct amdgpu_device *adev)
{
if (!amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__HDP))
return;
if (amdgpu_ip_version(adev, HDP_HWIP, 0) >= IP_VERSION(4, 4, 0))
WREG32_SOC15(HDP, 0, mmHDP_EDC_CNT, 0);
else
/*read back hdp ras counter to reset it to 0 */
RREG32_SOC15(HDP, 0, mmHDP_EDC_CNT);
}
static void hdp_v4_0_update_clock_gating(struct amdgpu_device *adev,
bool enable)
{
uint32_t def, data;
if (amdgpu_ip_version(adev, HDP_HWIP, 0) == IP_VERSION(4, 0, 0) ||
amdgpu_ip_version(adev, HDP_HWIP, 0) == IP_VERSION(4, 0, 1) ||
amdgpu_ip_version(adev, HDP_HWIP, 0) == IP_VERSION(4, 1, 1) ||
amdgpu_ip_version(adev, HDP_HWIP, 0) == IP_VERSION(4, 1, 0)) {
def = data = RREG32(SOC15_REG_OFFSET(HDP, 0, mmHDP_MEM_POWER_LS));
if (enable && (adev->cg_flags & AMD_CG_SUPPORT_HDP_LS))
data |= HDP_MEM_POWER_LS__LS_ENABLE_MASK;
else
data &= ~HDP_MEM_POWER_LS__LS_ENABLE_MASK;
if (def != data)
WREG32(SOC15_REG_OFFSET(HDP, 0, mmHDP_MEM_POWER_LS), data);
} else {
def = data = RREG32(SOC15_REG_OFFSET(HDP, 0, mmHDP_MEM_POWER_CTRL));
if (enable && (adev->cg_flags & AMD_CG_SUPPORT_HDP_LS))
data |= HDP_MEM_POWER_CTRL__IPH_MEM_POWER_CTRL_EN_MASK |
HDP_MEM_POWER_CTRL__IPH_MEM_POWER_LS_EN_MASK |
HDP_MEM_POWER_CTRL__RC_MEM_POWER_CTRL_EN_MASK |
HDP_MEM_POWER_CTRL__RC_MEM_POWER_LS_EN_MASK;
else
data &= ~(HDP_MEM_POWER_CTRL__IPH_MEM_POWER_CTRL_EN_MASK |
HDP_MEM_POWER_CTRL__IPH_MEM_POWER_LS_EN_MASK |
HDP_MEM_POWER_CTRL__RC_MEM_POWER_CTRL_EN_MASK |
HDP_MEM_POWER_CTRL__RC_MEM_POWER_LS_EN_MASK);
if (def != data)
WREG32(SOC15_REG_OFFSET(HDP, 0, mmHDP_MEM_POWER_CTRL), data);
}
}
static void hdp_v4_0_get_clockgating_state(struct amdgpu_device *adev,
u64 *flags)
{
int data;
if (amdgpu_ip_version(adev, HDP_HWIP, 0) == IP_VERSION(4, 4, 2)) {
/* Default enabled */
*flags |= AMD_CG_SUPPORT_HDP_MGCG;
return;
}
/* AMD_CG_SUPPORT_HDP_LS */
data = RREG32(SOC15_REG_OFFSET(HDP, 0, mmHDP_MEM_POWER_LS));
if (data & HDP_MEM_POWER_LS__LS_ENABLE_MASK)
*flags |= AMD_CG_SUPPORT_HDP_LS;
}
static void hdp_v4_0_init_registers(struct amdgpu_device *adev)
{
switch (amdgpu_ip_version(adev, HDP_HWIP, 0)) {
case IP_VERSION(4, 2, 1):
WREG32_FIELD15(HDP, 0, HDP_MMHUB_CNTL, HDP_MMHUB_GCC, 1);
break;
default:
break;
}
/* Do not program registers if VF */
if (amdgpu_sriov_vf(adev))
return;
WREG32_FIELD15(HDP, 0, HDP_MISC_CNTL, FLUSH_INVALIDATE_CACHE, 1);
if (amdgpu_ip_version(adev, HDP_HWIP, 0) == IP_VERSION(4, 4, 0))
WREG32_FIELD15(HDP, 0, HDP_MISC_CNTL, READ_BUFFER_WATERMARK, 2);
WREG32_SOC15(HDP, 0, mmHDP_NONSURFACE_BASE, (adev->gmc.vram_start >> 8));
WREG32_SOC15(HDP, 0, mmHDP_NONSURFACE_BASE_HI, (adev->gmc.vram_start >> 40));
}
struct amdgpu_ras_block_hw_ops hdp_v4_0_ras_hw_ops = {
.query_ras_error_count = hdp_v4_0_query_ras_error_count,
.reset_ras_error_count = hdp_v4_0_reset_ras_error_count,
};
struct amdgpu_hdp_ras hdp_v4_0_ras = {
.ras_block = {
.hw_ops = &hdp_v4_0_ras_hw_ops,
},
};
const struct amdgpu_hdp_funcs hdp_v4_0_funcs = {
.flush_hdp = hdp_v4_0_flush_hdp,
.invalidate_hdp = hdp_v4_0_invalidate_hdp,
.update_clock_gating = hdp_v4_0_update_clock_gating,
.get_clock_gating_state = hdp_v4_0_get_clockgating_state,
.init_registers = hdp_v4_0_init_registers,
};
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