drm/amdgpu: Add umc v12_0 ras functions

Add umc v12_0 ras error querying.

Signed-off-by: Candice Li <candice.li@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 256 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/umc_v12_0.c b/drivers/gpu/drm/amd/amdgpu/umc_v12_0.c
new file mode 100644
index 000000000000..ac52889601e7
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/umc_v12_0.c
@@ -0,0 +1,256 @@
+/*
+ * 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 "umc_v12_0.h"
+#include "amdgpu_ras.h"
+#include "amdgpu_umc.h"
+#include "amdgpu.h"
+#include "umc/umc_12_0_0_offset.h"
+#include "umc/umc_12_0_0_sh_mask.h"
+
+static inline uint64_t get_umc_v12_0_reg_offset(struct amdgpu_device *adev,
+					    uint32_t node_inst,
+					    uint32_t umc_inst,
+					    uint32_t ch_inst)
+{
+	uint32_t index = umc_inst * adev->umc.channel_inst_num + ch_inst;
+	uint64_t cross_node_offset = (node_inst == 0) ? 0 : UMC_V12_0_CROSS_NODE_OFFSET;
+
+	umc_inst = index / 4;
+	ch_inst = index % 4;
+
+	return adev->umc.channel_offs * ch_inst + UMC_V12_0_INST_DIST * umc_inst +
+		UMC_V12_0_NODE_DIST * node_inst + cross_node_offset;
+}
+
+static int umc_v12_0_reset_error_count_per_channel(struct amdgpu_device *adev,
+					uint32_t node_inst, uint32_t umc_inst,
+					uint32_t ch_inst, void *data)
+{
+	uint64_t odecc_err_cnt_addr;
+	uint64_t umc_reg_offset =
+		get_umc_v12_0_reg_offset(adev, node_inst, umc_inst, ch_inst);
+
+	odecc_err_cnt_addr =
+		SOC15_REG_OFFSET(UMC, 0, regUMCCH0_OdEccErrCnt);
+
+	/* clear error count */
+	WREG32_PCIE_EXT((odecc_err_cnt_addr + umc_reg_offset) * 4,
+			UMC_V12_0_CE_CNT_INIT);
+
+	return 0;
+}
+
+static void umc_v12_0_reset_error_count(struct amdgpu_device *adev)
+{
+	amdgpu_umc_loop_channels(adev,
+		umc_v12_0_reset_error_count_per_channel, NULL);
+}
+
+static void umc_v12_0_query_correctable_error_count(struct amdgpu_device *adev,
+						   uint64_t umc_reg_offset,
+						   unsigned long *error_count)
+{
+	uint64_t mc_umc_status;
+	uint64_t mc_umc_status_addr;
+
+	mc_umc_status_addr =
+		SOC15_REG_OFFSET(UMC, 0, regMCA_UMC_UMC0_MCUMC_STATUST0);
+
+	/* Rely on MCUMC_STATUS for correctable error counter
+	 * MCUMC_STATUS is a 64 bit register
+	 */
+	mc_umc_status =
+		RREG64_PCIE_EXT((mc_umc_status_addr + umc_reg_offset) * 4);
+
+	if (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1 &&
+	    REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, CECC) == 1)
+		*error_count += 1;
+}
+
+static void umc_v12_0_query_uncorrectable_error_count(struct amdgpu_device *adev,
+						      uint64_t umc_reg_offset,
+						      unsigned long *error_count)
+{
+	uint64_t mc_umc_status;
+	uint64_t mc_umc_status_addr;
+
+	mc_umc_status_addr =
+		SOC15_REG_OFFSET(UMC, 0, regMCA_UMC_UMC0_MCUMC_STATUST0);
+
+	/* Check the MCUMC_STATUS. */
+	mc_umc_status =
+		RREG64_PCIE_EXT((mc_umc_status_addr + umc_reg_offset) * 4);
+
+	if ((REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1) &&
+	    (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Deferred) == 1 ||
+	    REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UECC) == 1 ||
+	    REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, PCC) == 1 ||
+	    REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UC) == 1 ||
+	    REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, TCC) == 1))
+		*error_count += 1;
+}
+
+static int umc_v12_0_query_error_count(struct amdgpu_device *adev,
+					uint32_t node_inst, uint32_t umc_inst,
+					uint32_t ch_inst, void *data)
+{
+	struct ras_err_data *err_data = (struct ras_err_data *)data;
+	uint64_t umc_reg_offset =
+		get_umc_v12_0_reg_offset(adev, node_inst, umc_inst, ch_inst);
+
+	umc_v12_0_query_correctable_error_count(adev,
+					umc_reg_offset,
+					&(err_data->ce_count));
+	umc_v12_0_query_uncorrectable_error_count(adev,
+					umc_reg_offset,
+					&(err_data->ue_count));
+
+	return 0;
+}
+
+static void umc_v12_0_query_ras_error_count(struct amdgpu_device *adev,
+					   void *ras_error_status)
+{
+	amdgpu_umc_loop_channels(adev,
+		umc_v12_0_query_error_count, ras_error_status);
+
+	umc_v12_0_reset_error_count(adev);
+}
+
+static void umc_v12_0_convert_error_address(struct amdgpu_device *adev,
+					    struct ras_err_data *err_data, uint64_t err_addr,
+					    uint32_t ch_inst, uint32_t umc_inst,
+					    uint32_t node_inst)
+{
+
+}
+
+static int umc_v12_0_query_error_address(struct amdgpu_device *adev,
+					uint32_t node_inst, uint32_t umc_inst,
+					uint32_t ch_inst, void *data)
+{
+	uint64_t mc_umc_status_addr;
+	uint64_t mc_umc_status, err_addr;
+	uint64_t mc_umc_addrt0;
+	struct ras_err_data *err_data = (struct ras_err_data *)data;
+	uint64_t umc_reg_offset =
+		get_umc_v12_0_reg_offset(adev, node_inst, umc_inst, ch_inst);
+
+	mc_umc_status_addr =
+		SOC15_REG_OFFSET(UMC, 0, regMCA_UMC_UMC0_MCUMC_STATUST0);
+
+	mc_umc_status = RREG64_PCIE_EXT((mc_umc_status_addr + umc_reg_offset) * 4);
+
+	if (mc_umc_status == 0)
+		return 0;
+
+	if (!err_data->err_addr) {
+		/* clear umc status */
+		WREG64_PCIE_EXT((mc_umc_status_addr + umc_reg_offset) * 4, 0x0ULL);
+
+		return 0;
+	}
+
+	/* calculate error address if ue error is detected */
+	if (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1 &&
+	    REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, AddrV) == 1 &&
+	    REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UECC) == 1) {
+
+		mc_umc_addrt0 =
+			SOC15_REG_OFFSET(UMC, 0, regMCA_UMC_UMC0_MCUMC_ADDRT0);
+
+		err_addr = RREG64_PCIE_EXT((mc_umc_addrt0 + umc_reg_offset) * 4);
+
+		err_addr = REG_GET_FIELD(err_addr, MCA_UMC_UMC0_MCUMC_ADDRT0, ErrorAddr);
+
+		umc_v12_0_convert_error_address(adev, err_data, err_addr,
+					ch_inst, umc_inst, node_inst);
+	}
+
+	/* clear umc status */
+	WREG64_PCIE_EXT((mc_umc_status_addr + umc_reg_offset) * 4, 0x0ULL);
+
+	return 0;
+}
+
+static void umc_v12_0_query_ras_error_address(struct amdgpu_device *adev,
+					     void *ras_error_status)
+{
+	amdgpu_umc_loop_channels(adev,
+		umc_v12_0_query_error_address, ras_error_status);
+}
+
+static int umc_v12_0_err_cnt_init_per_channel(struct amdgpu_device *adev,
+					uint32_t node_inst, uint32_t umc_inst,
+					uint32_t ch_inst, void *data)
+{
+	uint32_t odecc_cnt_sel;
+	uint64_t odecc_cnt_sel_addr, odecc_err_cnt_addr;
+	uint64_t umc_reg_offset =
+		get_umc_v12_0_reg_offset(adev, node_inst, umc_inst, ch_inst);
+
+	odecc_cnt_sel_addr =
+		SOC15_REG_OFFSET(UMC, 0, regUMCCH0_OdEccCntSel);
+	odecc_err_cnt_addr =
+		SOC15_REG_OFFSET(UMC, 0, regUMCCH0_OdEccErrCnt);
+
+	odecc_cnt_sel = RREG32_PCIE_EXT((odecc_cnt_sel_addr + umc_reg_offset) * 4);
+
+	/* set ce error interrupt type to APIC based interrupt */
+	odecc_cnt_sel = REG_SET_FIELD(odecc_cnt_sel, UMCCH0_OdEccCntSel,
+					OdEccErrInt, 0x1);
+	WREG32_PCIE_EXT((odecc_cnt_sel_addr + umc_reg_offset) * 4, odecc_cnt_sel);
+
+	/* set error count to initial value */
+	WREG32_PCIE_EXT((odecc_err_cnt_addr + umc_reg_offset) * 4, UMC_V12_0_CE_CNT_INIT);
+
+	return 0;
+}
+
+static void umc_v12_0_err_cnt_init(struct amdgpu_device *adev)
+{
+	amdgpu_umc_loop_channels(adev,
+		umc_v12_0_err_cnt_init_per_channel, NULL);
+}
+
+static bool umc_v12_0_query_ras_poison_mode(struct amdgpu_device *adev)
+{
+	/*
+	 * Force return true, because regUMCCH0_EccCtrl
+	 * is not accessible from host side
+	 */
+	return true;
+}
+
+const struct amdgpu_ras_block_hw_ops umc_v12_0_ras_hw_ops = {
+	.query_ras_error_count = umc_v12_0_query_ras_error_count,
+	.query_ras_error_address = umc_v12_0_query_ras_error_address,
+};
+
+struct amdgpu_umc_ras umc_v12_0_ras = {
+	.ras_block = {
+		.hw_ops = &umc_v12_0_ras_hw_ops,
+	},
+	.err_cnt_init = umc_v12_0_err_cnt_init,
+	.query_ras_poison_mode = umc_v12_0_query_ras_poison_mode,
+};