soc: qcom: Add snapshot of memory dump driver

This is a snapshot of the memory dump driver as of msm-5.15
commit <908a517b050d> ("Merge "sched/walt: remove duplicate
definitions of rt_task_arrival_time"").

Change-Id: If6fd016ee13340ec90cdd6f34bbc87293f5a39ee
Signed-off-by: Huang Yiwei <quic_hyiwei@quicinc.com>

drivers/soc/qcom/Kconfig

@@ -187,6 +187,14 @@ config QCOM_SMD_RPM
 	  Say M here if you want to include support for the Qualcomm RPM as a
 	  module. This will build a module called "qcom-smd-rpm".
 
+config QCOM_MEMORY_DUMP_V2
+	tristate "QCOM Memory Dump V2 Support"
+	help
+	  This enables memory dump feature. It allows various client
+	  subsystems to register respective dump regions. At the time
+	  of deadlocks or cpu hangs these dump regions are captured to
+	  give a snapshot of the system at the time of the crash.
+
 config QCOM_SMEM_STATE
 	bool
 

drivers/soc/qcom/Makefile

@@ -26,6 +26,7 @@ obj-$(CONFIG_QCOM_WCNSS_CTRL) += wcnss_ctrl.o
 obj-$(CONFIG_QCOM_MSM_IPCC) += qcom_ipcc.o
 obj-$(CONFIG_QCOM_APR) += apr.o
 obj-$(CONFIG_QCOM_LLCC) += llcc-qcom.o
+obj-$(CONFIG_QCOM_MEMORY_DUMP_V2) += memory_dump_v2.o
 obj-$(CONFIG_QCOM_RPMHPD) += rpmhpd.o
 obj-$(CONFIG_QCOM_RPMPD) += rpmpd.o
 obj-$(CONFIG_QCOM_KRYO_L2_ACCESSORS) +=	kryo-l2-accessors.o

include/soc/qcom/memory_dump.h

@@ -0,0 +1,135 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2012, 2014-2017, 2019-2021, The Linux Foundation. All rights reserved.
+ */
+
+#ifndef __MSM_MEMORY_DUMP_H
+#define __MSM_MEMORY_DUMP_H
+
+#include <linux/errno.h>
+#include <linux/types.h>
+
+enum dump_client_type {
+	MSM_CPU_CTXT = 0,
+	MSM_L1_CACHE,
+	MSM_L2_CACHE,
+	MSM_OCMEM,
+	MSM_TMC_ETFETB,
+	MSM_ETM0_REG,
+	MSM_ETM1_REG,
+	MSM_ETM2_REG,
+	MSM_ETM3_REG,
+	MSM_TMC0_REG, /* TMC_ETR */
+	MSM_TMC1_REG, /* TMC_ETF */
+	MSM_LOG_BUF,
+	MSM_LOG_BUF_FIRST_IDX,
+	MAX_NUM_CLIENTS,
+};
+
+struct msm_client_dump {
+	enum dump_client_type id;
+	unsigned long start_addr;
+	unsigned long end_addr;
+};
+
+#ifdef CONFIG_QCOM_MEMORY_DUMP
+extern int msm_dump_tbl_register(struct msm_client_dump *client_entry);
+#else
+static inline int msm_dump_tbl_register(struct msm_client_dump *entry)
+{
+	return -EIO;
+}
+#endif
+
+
+#if IS_ENABLED(CONFIG_QCOM_MEMORY_DUMP_V2)
+extern uint32_t msm_dump_table_version(void);
+#else
+static inline uint32_t msm_dump_table_version(void)
+{
+	return 0;
+}
+#endif
+
+#define MSM_DUMP_MAKE_VERSION(ma, mi)	((ma << 20) | mi)
+#define MSM_DUMP_MAJOR(val)		(val >> 20)
+#define MSM_DUMP_MINOR(val)		(val & 0xFFFFF)
+
+
+#define MAX_NUM_ENTRIES		0x150
+
+enum msm_dump_data_ids {
+	MSM_DUMP_DATA_CPU_CTX = 0x00,
+	MSM_DUMP_DATA_L1_INST_CACHE = 0x60,
+	MSM_DUMP_DATA_L1_DATA_CACHE = 0x80,
+	MSM_DUMP_DATA_ETM_REG = 0xA0,
+	MSM_DUMP_DATA_L2_CACHE = 0xC0,
+	MSM_DUMP_DATA_L3_CACHE = 0xD0,
+	MSM_DUMP_DATA_OCMEM = 0xE0,
+	MSM_DUMP_DATA_CNSS_WLAN = 0xE1,
+	MSM_DUMP_DATA_WIGIG = 0xE2,
+	MSM_DUMP_DATA_PMIC = 0xE4,
+	MSM_DUMP_DATA_DBGUI_REG = 0xE5,
+	MSM_DUMP_DATA_DCC_REG = 0xE6,
+	MSM_DUMP_DATA_DCC_SRAM = 0xE7,
+	MSM_DUMP_DATA_MISC = 0xE8,
+	MSM_DUMP_DATA_VSENSE = 0xE9,
+	MSM_DUMP_DATA_RPM = 0xEA,
+	MSM_DUMP_DATA_SCANDUMP = 0xEB,
+	MSM_DUMP_DATA_RPMH = 0xEC,
+	MSM_DUMP_DATA_TMC_ETF = 0xF0,
+	MSM_DUMP_DATA_TMC_ETF_SWAO = 0xF1,
+	MSM_DUMP_DATA_TMC_REG = 0x100,
+	MSM_DUMP_DATA_TMC_ETF_SWAO_REG = 0x102,
+	MSM_DUMP_DATA_LOG_BUF = 0x110,
+	MSM_DUMP_DATA_LOG_BUF_FIRST_IDX = 0x111,
+	MSM_DUMP_DATA_SCANDUMP_PER_CPU = 0x130,
+	MSM_DUMP_DATA_LLCC_PER_INSTANCE = 0x140,
+	MSM_DUMP_DATA_MAX = MAX_NUM_ENTRIES,
+};
+
+enum msm_dump_table_ids {
+	MSM_DUMP_TABLE_APPS,
+	MSM_DUMP_TABLE_MAX = MAX_NUM_ENTRIES,
+};
+
+enum msm_dump_type {
+	MSM_DUMP_TYPE_DATA,
+	MSM_DUMP_TYPE_TABLE,
+};
+
+struct msm_dump_data {
+	uint32_t version;
+	uint32_t magic;
+	char name[32];
+	uint64_t addr;
+	uint64_t len;
+	uint32_t reserved;
+};
+
+struct msm_dump_entry {
+	uint32_t id;
+	char name[32];
+	uint32_t type;
+	uint64_t addr;
+};
+
+#if IS_ENABLED(CONFIG_QCOM_MEMORY_DUMP_V2)
+extern int msm_dump_data_register(enum msm_dump_table_ids id,
+				  struct msm_dump_entry *entry);
+extern int msm_dump_data_register_nominidump(enum msm_dump_table_ids id,
+				  struct msm_dump_entry *entry);
+#else
+static inline int msm_dump_data_register(enum msm_dump_table_ids id,
+					 struct msm_dump_entry *entry)
+{
+	return -EINVAL;
+}
+static inline int msm_dump_data_register_nominidump(enum msm_dump_table_ids id,
+					 struct msm_dump_entry *entry)
+{
+	return -EINVAL;
+}
+#endif
+
+#endif