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-rw-r--r--drivers/soc/qcom/Kconfig2
-rw-r--r--drivers/soc/qcom/Makefile1
-rw-r--r--drivers/soc/qcom/memshare/Kconfig9
-rw-r--r--drivers/soc/qcom/memshare/Makefile1
-rw-r--r--drivers/soc/qcom/memshare/heap_mem_ext_v01.c472
-rw-r--r--drivers/soc/qcom/memshare/heap_mem_ext_v01.h356
-rw-r--r--drivers/soc/qcom/memshare/msm_memshare.c847
-rw-r--r--drivers/soc/qcom/memshare/msm_memshare.h57
8 files changed, 1745 insertions, 0 deletions
diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig
index 64ceb0511bdb..613f0ade8fe8 100644
--- a/drivers/soc/qcom/Kconfig
+++ b/drivers/soc/qcom/Kconfig
@@ -390,3 +390,5 @@ config MSM_EVENT_TIMER
need to be monitored by the PM. The enables the PM code to monitor
events that require the core to be awake and ready to handle the
event.
+
+source "drivers/soc/qcom/memshare/Kconfig"
diff --git a/drivers/soc/qcom/Makefile b/drivers/soc/qcom/Makefile
index a710a5d76421..bf67d9fa3621 100644
--- a/drivers/soc/qcom/Makefile
+++ b/drivers/soc/qcom/Makefile
@@ -19,6 +19,7 @@ obj-$(CONFIG_MSM_IPC_ROUTER_HSIC_XPRT) += ipc_router_hsic_xprt.o
obj-$(CONFIG_MSM_IPC_ROUTER_MHI_XPRT) += ipc_router_mhi_xprt.o
obj-$(CONFIG_MSM_IPC_ROUTER_GLINK_XPRT) += ipc_router_glink_xprt.o
+obj-$(CONFIG_MEM_SHARE_QMI_SERVICE) += memshare/
obj-$(CONFIG_MSM_PIL_SSR_GENERIC) += subsys-pil-tz.o
obj-$(CONFIG_MSM_PIL_MSS_QDSP6V5) += pil-q6v5.o pil-msa.o pil-q6v5-mss.o
obj-$(CONFIG_MSM_PIL) += peripheral-loader.o
diff --git a/drivers/soc/qcom/memshare/Kconfig b/drivers/soc/qcom/memshare/Kconfig
new file mode 100644
index 000000000000..7eb1415b350b
--- /dev/null
+++ b/drivers/soc/qcom/memshare/Kconfig
@@ -0,0 +1,9 @@
+config MEM_SHARE_QMI_SERVICE
+ depends on MSM_QMI_INTERFACE
+ bool "Shared Heap for external processors"
+ help
+ Memory Share Kernel Qualcomm Messaging Interface Service
+ receives requests from Modem Processor Sub System
+ for heap alloc/free from Application Processor
+ Sub System and send a response back to client with
+ proper handle/address.
diff --git a/drivers/soc/qcom/memshare/Makefile b/drivers/soc/qcom/memshare/Makefile
new file mode 100644
index 000000000000..cf49fbcfdb21
--- /dev/null
+++ b/drivers/soc/qcom/memshare/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_MEM_SHARE_QMI_SERVICE) := heap_mem_ext_v01.o msm_memshare.o \ No newline at end of file
diff --git a/drivers/soc/qcom/memshare/heap_mem_ext_v01.c b/drivers/soc/qcom/memshare/heap_mem_ext_v01.c
new file mode 100644
index 000000000000..717c4d80d999
--- /dev/null
+++ b/drivers/soc/qcom/memshare/heap_mem_ext_v01.c
@@ -0,0 +1,472 @@
+/* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/qmi_encdec.h>
+#include <soc/qcom/msm_qmi_interface.h>
+#include "heap_mem_ext_v01.h"
+
+struct elem_info mem_alloc_req_msg_data_v01_ei[] = {
+ {
+ .data_type = QMI_UNSIGNED_4_BYTE,
+ .elem_len = 1,
+ .elem_size = sizeof(uint32_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x01,
+ .offset = offsetof(struct mem_alloc_req_msg_v01,
+ num_bytes),
+ },
+ {
+ .data_type = QMI_OPT_FLAG,
+ .elem_len = 1,
+ .elem_size = sizeof(uint8_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x10,
+ .offset = offsetof(struct mem_alloc_req_msg_v01,
+ block_alignment_valid),
+ },
+ {
+ .data_type = QMI_UNSIGNED_4_BYTE,
+ .elem_len = 1,
+ .elem_size = sizeof(uint32_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x10,
+ .offset = offsetof(struct mem_alloc_req_msg_v01,
+ block_alignment),
+ },
+ {
+ .data_type = QMI_EOTI,
+ .is_array = NO_ARRAY,
+ .tlv_type = QMI_COMMON_TLV_TYPE,
+ },
+};
+
+struct elem_info mem_alloc_resp_msg_data_v01_ei[] = {
+ {
+ .data_type = QMI_SIGNED_2_BYTE_ENUM,
+ .elem_len = 1,
+ .elem_size = sizeof(uint16_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x01,
+ .offset = offsetof(struct mem_alloc_resp_msg_v01,
+ resp),
+ },
+ {
+ .data_type = QMI_OPT_FLAG,
+ .elem_len = 1,
+ .elem_size = sizeof(uint8_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x10,
+ .offset = offsetof(struct mem_alloc_resp_msg_v01,
+ handle_valid),
+ },
+ {
+ .data_type = QMI_UNSIGNED_8_BYTE,
+ .elem_len = 1,
+ .elem_size = sizeof(uint64_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x10,
+ .offset = offsetof(struct mem_alloc_resp_msg_v01,
+ handle),
+ },
+ {
+ .data_type = QMI_OPT_FLAG,
+ .elem_len = 1,
+ .elem_size = sizeof(uint8_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x11,
+ .offset = offsetof(struct mem_alloc_resp_msg_v01,
+ num_bytes_valid),
+ },
+ {
+ .data_type = QMI_UNSIGNED_4_BYTE,
+ .elem_len = 1,
+ .elem_size = sizeof(uint32_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x11,
+ .offset = offsetof(struct mem_alloc_resp_msg_v01,
+ num_bytes),
+ },
+ {
+ .data_type = QMI_EOTI,
+ .is_array = NO_ARRAY,
+ .tlv_type = QMI_COMMON_TLV_TYPE,
+ },
+};
+
+struct elem_info mem_free_req_msg_data_v01_ei[] = {
+ {
+ .data_type = QMI_UNSIGNED_8_BYTE,
+ .elem_len = 1,
+ .elem_size = sizeof(uint64_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x01,
+ .offset = offsetof(struct mem_free_req_msg_v01,
+ handle),
+ },
+ {
+ .data_type = QMI_EOTI,
+ .is_array = NO_ARRAY,
+ .tlv_type = QMI_COMMON_TLV_TYPE,
+ },
+};
+
+struct elem_info mem_free_resp_msg_data_v01_ei[] = {
+ {
+ .data_type = QMI_SIGNED_2_BYTE_ENUM,
+ .elem_len = 1,
+ .elem_size = sizeof(uint16_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x01,
+ .offset = offsetof(struct mem_free_resp_msg_v01,
+ resp),
+ },
+ {
+ .data_type = QMI_EOTI,
+ .is_array = NO_ARRAY,
+ .tlv_type = QMI_COMMON_TLV_TYPE,
+ },
+};
+
+struct elem_info dhms_mem_alloc_addr_info_type_v01_ei[] = {
+ {
+ .data_type = QMI_UNSIGNED_8_BYTE,
+ .elem_len = 1,
+ .elem_size = sizeof(uint64_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = QMI_COMMON_TLV_TYPE,
+ .offset = offsetof(struct
+ dhms_mem_alloc_addr_info_type_v01,
+ phy_addr),
+ },
+ {
+ .data_type = QMI_UNSIGNED_4_BYTE,
+ .elem_len = 1,
+ .elem_size = sizeof(uint32_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = QMI_COMMON_TLV_TYPE,
+ .offset = offsetof(struct
+ dhms_mem_alloc_addr_info_type_v01,
+ num_bytes),
+ },
+ {
+ .data_type = QMI_EOTI,
+ .is_array = NO_ARRAY,
+ .tlv_type = QMI_COMMON_TLV_TYPE,
+ },
+};
+
+struct elem_info mem_alloc_generic_req_msg_data_v01_ei[] = {
+ {
+ .data_type = QMI_UNSIGNED_4_BYTE,
+ .elem_len = 1,
+ .elem_size = sizeof(uint32_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x01,
+ .offset = offsetof(struct mem_alloc_generic_req_msg_v01,
+ num_bytes),
+ },
+ {
+ .data_type = QMI_UNSIGNED_4_BYTE,
+ .elem_len = 1,
+ .elem_size = sizeof(uint32_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x02,
+ .offset = offsetof(struct mem_alloc_generic_req_msg_v01,
+ client_id),
+ },
+ {
+ .data_type = QMI_UNSIGNED_4_BYTE,
+ .elem_len = 1,
+ .elem_size = sizeof(uint32_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x03,
+ .offset = offsetof(struct mem_alloc_generic_req_msg_v01,
+ proc_id),
+ },
+ {
+ .data_type = QMI_UNSIGNED_4_BYTE,
+ .elem_len = 1,
+ .elem_size = sizeof(uint32_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x04,
+ .offset = offsetof(struct mem_alloc_generic_req_msg_v01,
+ sequence_id),
+ },
+ {
+ .data_type = QMI_OPT_FLAG,
+ .elem_len = 1,
+ .elem_size = sizeof(uint8_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x10,
+ .offset = offsetof(struct mem_alloc_generic_req_msg_v01,
+ alloc_contiguous_valid),
+ },
+ {
+ .data_type = QMI_UNSIGNED_1_BYTE,
+ .elem_len = 1,
+ .elem_size = sizeof(uint8_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x10,
+ .offset = offsetof(struct mem_alloc_generic_req_msg_v01,
+ alloc_contiguous),
+ },
+ {
+ .data_type = QMI_OPT_FLAG,
+ .elem_len = 1,
+ .elem_size = sizeof(uint8_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x11,
+ .offset = offsetof(struct mem_alloc_generic_req_msg_v01,
+ block_alignment_valid),
+ },
+ {
+ .data_type = QMI_UNSIGNED_4_BYTE,
+ .elem_len = 1,
+ .elem_size = sizeof(uint32_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x11,
+ .offset = offsetof(struct mem_alloc_generic_req_msg_v01,
+ block_alignment),
+ },
+ {
+ .data_type = QMI_EOTI,
+ .is_array = NO_ARRAY,
+ .tlv_type = QMI_COMMON_TLV_TYPE,
+ },
+};
+
+struct elem_info mem_alloc_generic_resp_msg_data_v01_ei[] = {
+ {
+ .data_type = QMI_STRUCT,
+ .elem_len = 1,
+ .elem_size = sizeof(struct qmi_response_type_v01),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x02,
+ .offset = offsetof(struct
+ mem_alloc_generic_resp_msg_v01,
+ resp),
+ .ei_array = get_qmi_response_type_v01_ei(),
+ },
+ {
+ .data_type = QMI_OPT_FLAG,
+ .elem_len = 1,
+ .elem_size = sizeof(uint8_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x10,
+ .offset = offsetof(struct
+ mem_alloc_generic_resp_msg_v01,
+ sequence_id_valid),
+ },
+ {
+ .data_type = QMI_UNSIGNED_4_BYTE,
+ .elem_len = 1,
+ .elem_size = sizeof(uint32_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x10,
+ .offset = offsetof(struct
+ mem_alloc_generic_resp_msg_v01,
+ sequence_id),
+ },
+ {
+ .data_type = QMI_OPT_FLAG,
+ .elem_len = 1,
+ .elem_size = sizeof(uint8_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x11,
+ .offset = offsetof(struct
+ mem_alloc_generic_resp_msg_v01,
+ dhms_mem_alloc_addr_info_valid),
+ },
+ {
+ .data_type = QMI_DATA_LEN,
+ .elem_len = 1,
+ .elem_size = sizeof(uint8_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x11,
+ .offset = offsetof(struct
+ mem_alloc_generic_resp_msg_v01,
+ dhms_mem_alloc_addr_info_len),
+ },
+ {
+ .data_type = QMI_STRUCT,
+ .elem_len = MAX_ARR_CNT_V01,
+ .elem_size = sizeof(struct
+ dhms_mem_alloc_addr_info_type_v01),
+ .is_array = VAR_LEN_ARRAY,
+ .tlv_type = 0x11,
+ .offset = offsetof(struct
+ mem_alloc_generic_resp_msg_v01,
+ dhms_mem_alloc_addr_info),
+ .ei_array = dhms_mem_alloc_addr_info_type_v01_ei,
+ },
+ {
+ .data_type = QMI_EOTI,
+ .is_array = NO_ARRAY,
+ .tlv_type = QMI_COMMON_TLV_TYPE,
+ },
+};
+
+struct elem_info mem_free_generic_req_msg_data_v01_ei[] = {
+ {
+ .data_type = QMI_DATA_LEN,
+ .elem_len = 1,
+ .elem_size = sizeof(uint8_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x01,
+ .offset = offsetof(struct mem_free_generic_req_msg_v01,
+ dhms_mem_alloc_addr_info_len),
+ },
+ {
+ .data_type = QMI_STRUCT,
+ .elem_len = MAX_ARR_CNT_V01,
+ .elem_size = sizeof(struct
+ dhms_mem_alloc_addr_info_type_v01),
+ .is_array = VAR_LEN_ARRAY,
+ .tlv_type = 0x01,
+ .offset = offsetof(struct mem_free_generic_req_msg_v01,
+ dhms_mem_alloc_addr_info),
+ .ei_array = dhms_mem_alloc_addr_info_type_v01_ei,
+ },
+ {
+ .data_type = QMI_OPT_FLAG,
+ .elem_len = 1,
+ .elem_size = sizeof(uint8_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x10,
+ .offset = offsetof(struct mem_free_generic_req_msg_v01,
+ client_id_valid),
+ },
+ {
+ .data_type = QMI_UNSIGNED_4_BYTE,
+ .elem_len = 1,
+ .elem_size = sizeof(uint32_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x10,
+ .offset = offsetof(struct mem_free_generic_req_msg_v01,
+ client_id),
+ },
+ {
+ .data_type = QMI_OPT_FLAG,
+ .elem_len = 1,
+ .elem_size = sizeof(uint8_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x11,
+ .offset = offsetof(struct mem_free_generic_req_msg_v01,
+ proc_id_valid),
+ },
+ {
+ .data_type = QMI_UNSIGNED_4_BYTE,
+ .elem_len = 1,
+ .elem_size = sizeof(uint32_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x11,
+ .offset = offsetof(struct mem_free_generic_req_msg_v01,
+ proc_id),
+ },
+ {
+ .data_type = QMI_EOTI,
+ .is_array = NO_ARRAY,
+ .tlv_type = QMI_COMMON_TLV_TYPE,
+ },
+};
+
+struct elem_info mem_free_generic_resp_msg_data_v01_ei[] = {
+ {
+ .data_type = QMI_STRUCT,
+ .elem_len = 1,
+ .elem_size = sizeof(struct qmi_response_type_v01),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x02,
+ .offset = offsetof(struct
+ mem_free_generic_resp_msg_v01,
+ resp),
+ .ei_array = get_qmi_response_type_v01_ei(),
+ },
+ {
+ .data_type = QMI_EOTI,
+ .is_array = NO_ARRAY,
+ .tlv_type = QMI_COMMON_TLV_TYPE,
+ },
+};
+
+struct elem_info mem_query_size_req_msg_data_v01_ei[] = {
+ {
+ .data_type = QMI_UNSIGNED_4_BYTE,
+ .elem_len = 1,
+ .elem_size = sizeof(uint32_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x01,
+ .offset = offsetof(struct mem_query_size_req_msg_v01,
+ client_id),
+ },
+ {
+ .data_type = QMI_OPT_FLAG,
+ .elem_len = 1,
+ .elem_size = sizeof(uint8_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x10,
+ .offset = offsetof(struct mem_query_size_req_msg_v01,
+ proc_id_valid),
+ },
+ {
+ .data_type = QMI_UNSIGNED_4_BYTE,
+ .elem_len = 1,
+ .elem_size = sizeof(uint32_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x10,
+ .offset = offsetof(struct mem_query_size_req_msg_v01,
+ proc_id),
+ },
+ {
+ .data_type = QMI_EOTI,
+ .is_array = NO_ARRAY,
+ .tlv_type = QMI_COMMON_TLV_TYPE,
+ },
+};
+
+struct elem_info mem_query_size_resp_msg_data_v01_ei[] = {
+ {
+ .data_type = QMI_STRUCT,
+ .elem_len = 1,
+ .elem_size = sizeof(struct qmi_response_type_v01),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x02,
+ .offset = offsetof(struct
+ mem_query_size_rsp_msg_v01,
+ resp),
+ .ei_array = get_qmi_response_type_v01_ei(),
+ },
+ {
+ .data_type = QMI_OPT_FLAG,
+ .elem_len = 1,
+ .elem_size = sizeof(uint8_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x10,
+ .offset = offsetof(struct mem_query_size_rsp_msg_v01,
+ size_valid),
+ },
+ {
+ .data_type = QMI_UNSIGNED_4_BYTE,
+ .elem_len = 1,
+ .elem_size = sizeof(uint32_t),
+ .is_array = NO_ARRAY,
+ .tlv_type = 0x10,
+ .offset = offsetof(struct mem_query_size_rsp_msg_v01,
+ size),
+ },
+ {
+ .data_type = QMI_EOTI,
+ .is_array = NO_ARRAY,
+ .tlv_type = QMI_COMMON_TLV_TYPE,
+ },
+};
diff --git a/drivers/soc/qcom/memshare/heap_mem_ext_v01.h b/drivers/soc/qcom/memshare/heap_mem_ext_v01.h
new file mode 100644
index 000000000000..b64ad1004aa2
--- /dev/null
+++ b/drivers/soc/qcom/memshare/heap_mem_ext_v01.h
@@ -0,0 +1,356 @@
+/* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef HEAP_MEM_EXT_SERVICE_01_H
+#define HEAP_MEM_EXT_SERVICE_01_H
+
+#include <soc/qcom/msm_qmi_interface.h>
+
+#define MEM_ALLOC_REQ_MAX_MSG_LEN_V01 255
+#define MEM_FREE_REQ_MAX_MSG_LEN_V01 255
+#define MAX_ARR_CNT_V01 64
+
+struct dhms_mem_alloc_addr_info_type_v01 {
+ uint64_t phy_addr;
+ uint32_t num_bytes;
+};
+
+enum dhms_mem_proc_id_v01 {
+ /* To force a 32 bit signed enum. Do not change or use */
+ DHMS_MEM_PROC_ID_MIN_ENUM_VAL_V01 = -2147483647,
+ /* Request from MPSS processor */
+ DHMS_MEM_PROC_MPSS_V01 = 0,
+ /* Request from ADSP processor */
+ DHMS_MEM_PROC_ADSP_V01 = 1,
+ /* Request from WCNSS processor */
+ DHMS_MEM_PROC_WCNSS_V01 = 2,
+ /* To force a 32 bit signed enum. Do not change or use */
+ DHMS_MEM_PROC_ID_MAX_ENUM_VAL_V01 = 2147483647
+};
+
+enum dhms_mem_client_id_v01 {
+ /*To force a 32 bit signed enum. Do not change or use*/
+ DHMS_MEM_CLIENT_ID_MIN_ENUM_VAL_V01 = -2147483647,
+ /* Request from GPS Client */
+ DHMS_MEM_CLIENT_GPS_V01 = 0,
+ /* Invalid Client */
+ DHMS_MEM_CLIENT_INVALID = 1000,
+ /* To force a 32 bit signed enum. Do not change or use */
+ DHMS_MEM_CLIENT_ID_MAX_ENUM_VAL_V01 = 2147483647
+};
+
+enum dhms_mem_block_align_enum_v01 {
+ /* To force a 32 bit signed enum. Do not change or use
+ */
+ DHMS_MEM_BLOCK_ALIGN_ENUM_MIN_ENUM_VAL_V01 = -2147483647,
+ /* Align allocated memory by 2 bytes */
+ DHMS_MEM_BLOCK_ALIGN_2_V01 = 0,
+ /* Align allocated memory by 4 bytes */
+ DHMS_MEM_BLOCK_ALIGN_4_V01 = 1,
+ /**< Align allocated memory by 8 bytes */
+ DHMS_MEM_BLOCK_ALIGN_8_V01 = 2,
+ /**< Align allocated memory by 16 bytes */
+ DHMS_MEM_BLOCK_ALIGN_16_V01 = 3,
+ /**< Align allocated memory by 32 bytes */
+ DHMS_MEM_BLOCK_ALIGN_32_V01 = 4,
+ /**< Align allocated memory by 64 bytes */
+ DHMS_MEM_BLOCK_ALIGN_64_V01 = 5,
+ /**< Align allocated memory by 128 bytes */
+ DHMS_MEM_BLOCK_ALIGN_128_V01 = 6,
+ /**< Align allocated memory by 256 bytes */
+ DHMS_MEM_BLOCK_ALIGN_256_V01 = 7,
+ /**< Align allocated memory by 512 bytes */
+ DHMS_MEM_BLOCK_ALIGN_512_V01 = 8,
+ /**< Align allocated memory by 1024 bytes */
+ DHMS_MEM_BLOCK_ALIGN_1K_V01 = 9,
+ /**< Align allocated memory by 2048 bytes */
+ DHMS_MEM_BLOCK_ALIGN_2K_V01 = 10,
+ /**< Align allocated memory by 4096 bytes */
+ DHMS_MEM_BLOCK_ALIGN_4K_V01 = 11,
+ DHMS_MEM_BLOCK_ALIGN_ENUM_MAX_ENUM_VAL_V01 = 2147483647
+ /* To force a 32 bit signed enum. Do not change or use
+ */
+};
+
+/* Request Message; This command is used for getting
+ * the multiple physically contiguous
+ * memory blocks from the server memory subsystem
+ */
+struct mem_alloc_req_msg_v01 {
+
+ /* Mandatory */
+ /*requested size*/
+ uint32_t num_bytes;
+
+ /* Optional */
+ /* Must be set to true if block_alignment
+ * is being passed
+ */
+ uint8_t block_alignment_valid;
+ /* The block alignment for the memory block to be allocated
+ */
+ enum dhms_mem_block_align_enum_v01 block_alignment;
+}; /* Message */
+
+/* Response Message; This command is used for getting
+ * the multiple physically contiguous memory blocks
+ * from the server memory subsystem
+ */
+struct mem_alloc_resp_msg_v01 {
+
+ /* Mandatory */
+ /* Result Code */
+ /* The result of the requested memory operation
+ */
+ enum qmi_result_type_v01 resp;
+ /* Optional */
+ /* Memory Block Handle
+ */
+ /* Must be set to true if handle is being passed
+ */
+ uint8_t handle_valid;
+ /* The physical address of the memory allocated on the HLOS
+ */
+ uint64_t handle;
+ /* Optional */
+ /* Memory block size */
+ /* Must be set to true if num_bytes is being passed
+ */
+ uint8_t num_bytes_valid;
+ /* The number of bytes actually allocated for the request.
+ * This value can be smaller than the size requested in
+ * QMI_DHMS_MEM_ALLOC_REQ_MSG.
+ */
+ uint32_t num_bytes;
+}; /* Message */
+
+/* Request Message; This command is used for releasing
+ * the multiple physically contiguous
+ * memory blocks to the server memory subsystem
+ */
+struct mem_free_req_msg_v01 {
+
+ /* Mandatory */
+ /* Physical address of memory to be freed
+ */
+ uint32_t handle;
+}; /* Message */
+
+/* Response Message; This command is used for releasing
+ * the multiple physically contiguous
+ * memory blocks to the server memory subsystem
+ */
+struct mem_free_resp_msg_v01 {
+
+ /* Mandatory */
+ /* Result of the requested memory operation, todo,
+ * need to check the async operation for free
+ */
+ enum qmi_result_type_v01 resp;
+}; /* Message */
+
+/* Request Message; This command is used for getting
+ * the multiple physically contiguous
+ * memory blocks from the server memory subsystem
+ */
+struct mem_alloc_generic_req_msg_v01 {
+
+ /* Mandatory */
+ /*requested size*/
+ uint32_t num_bytes;
+
+ /* Mandatory */
+ /* client id */
+ enum dhms_mem_client_id_v01 client_id;
+
+ /* Mandatory */
+ /* Peripheral Id*/
+ enum dhms_mem_proc_id_v01 proc_id;
+
+ /* Mandatory */
+ /* Sequence id */
+ uint32_t sequence_id;
+
+ /* Optional */
+ /* alloc_contiguous */
+ /* Must be set to true if alloc_contiguous is being passed */
+ uint8_t alloc_contiguous_valid;
+
+ /* Alloc_contiguous is used to identify that clients are requesting
+ * for contiguous or non contiguous memory, default is contiguous
+ * 0 = non contiguous else contiguous
+ */
+ uint8_t alloc_contiguous;
+
+ /* Optional */
+ /* Must be set to true if block_alignment
+ * is being passed
+ */
+ uint8_t block_alignment_valid;
+
+ /* The block alignment for the memory block to be allocated
+ */
+ enum dhms_mem_block_align_enum_v01 block_alignment;
+
+}; /* Message */
+
+/* Response Message; This command is used for getting
+ * the multiple physically contiguous memory blocks
+ * from the server memory subsystem
+ */
+struct mem_alloc_generic_resp_msg_v01 {
+
+ /* Mandatory */
+ /* Result Code */
+ /* The result of the requested memory operation
+ */
+ struct qmi_response_type_v01 resp;
+
+ /* Optional */
+ /* Sequence ID */
+ /* Must be set to true if sequence_id is being passed */
+ uint8_t sequence_id_valid;
+
+
+ /* Mandatory */
+ /* Sequence id */
+ uint32_t sequence_id;
+
+ /* Optional */
+ /* Memory Block Handle
+ */
+ /* Must be set to true if handle is being passed
+ */
+ uint8_t dhms_mem_alloc_addr_info_valid;
+
+ /* Optional */
+ /* Handle Size */
+ uint32_t dhms_mem_alloc_addr_info_len;
+
+ /* Optional */
+ /* The physical address of the memory allocated on the HLOS
+ */
+ struct dhms_mem_alloc_addr_info_type_v01
+ dhms_mem_alloc_addr_info[MAX_ARR_CNT_V01];
+
+}; /* Message */
+
+/* Request Message; This command is used for releasing
+ * the multiple physically contiguous
+ * memory blocks to the server memory subsystem
+ */
+struct mem_free_generic_req_msg_v01 {
+
+ /* Mandatory */
+ /* Must be set to # of elments in array*/
+ uint32_t dhms_mem_alloc_addr_info_len;
+
+ /* Mandatory */
+ /* Physical address and size of the memory allocated
+ * on the HLOS to be freed.
+ */
+ struct dhms_mem_alloc_addr_info_type_v01
+ dhms_mem_alloc_addr_info[MAX_ARR_CNT_V01];
+
+ /* Optional */
+ /* Client ID */
+ /* Must be set to true if client_id is being passed */
+ uint8_t client_id_valid;
+
+ /* Optional */
+ /* Client Id */
+ enum dhms_mem_client_id_v01 client_id;
+
+ /* Optional */
+ /* Proc ID */
+ /* Must be set to true if proc_id is being passed */
+ uint8_t proc_id_valid;
+
+ /* Optional */
+ /* Peripheral */
+ enum dhms_mem_proc_id_v01 proc_id;
+
+}; /* Message */
+
+/* Response Message; This command is used for releasing
+ * the multiple physically contiguous
+ * memory blocks to the server memory subsystem
+ */
+struct mem_free_generic_resp_msg_v01 {
+
+ /*
+ * Mandatory
+ * Result of the requested memory operation, todo,
+ * need to check the async operation for free
+ */
+ struct qmi_response_type_v01 resp;
+
+}; /* Message */
+
+struct mem_query_size_req_msg_v01 {
+
+ /* Mandatory */
+ enum dhms_mem_client_id_v01 client_id;
+
+ /*
+ * Optional
+ * Proc ID
+ * proc_id_valid must be set to true if proc_id is being passed
+ */
+ uint8_t proc_id_valid;
+
+ enum dhms_mem_proc_id_v01 proc_id;
+}; /* Message */
+
+struct mem_query_size_rsp_msg_v01 {
+
+ /*
+ * Mandatory
+ * Result Code
+ */
+ struct qmi_response_type_v01 resp;
+
+ /*
+ * Optional
+ * size_valid must be set to true if size is being passed
+ */
+ uint8_t size_valid;
+
+ uint32_t size;
+}; /* Message */
+
+
+extern struct elem_info mem_alloc_req_msg_data_v01_ei[];
+extern struct elem_info mem_alloc_resp_msg_data_v01_ei[];
+extern struct elem_info mem_free_req_msg_data_v01_ei[];
+extern struct elem_info mem_free_resp_msg_data_v01_ei[];
+extern struct elem_info mem_alloc_generic_req_msg_data_v01_ei[];
+extern struct elem_info mem_alloc_generic_resp_msg_data_v01_ei[];
+extern struct elem_info mem_free_generic_req_msg_data_v01_ei[];
+extern struct elem_info mem_free_generic_resp_msg_data_v01_ei[];
+extern struct elem_info mem_query_size_req_msg_data_v01_ei[];
+extern struct elem_info mem_query_size_resp_msg_data_v01_ei[];
+
+/*Service Message Definition*/
+#define MEM_ALLOC_REQ_MSG_V01 0x0020
+#define MEM_ALLOC_RESP_MSG_V01 0x0020
+#define MEM_FREE_REQ_MSG_V01 0x0021
+#define MEM_FREE_RESP_MSG_V01 0x0021
+#define MEM_ALLOC_GENERIC_REQ_MSG_V01 0x0022
+#define MEM_ALLOC_GENERIC_RESP_MSG_V01 0x0022
+#define MEM_FREE_GENERIC_REQ_MSG_V01 0x0023
+#define MEM_FREE_GENERIC_RESP_MSG_V01 0x0023
+#define MEM_QUERY_SIZE_REQ_MSG_V01 0x0024
+#define MEM_QUERY_SIZE_RESP_MSG_V01 0x0024
+
+#endif
diff --git a/drivers/soc/qcom/memshare/msm_memshare.c b/drivers/soc/qcom/memshare/msm_memshare.c
new file mode 100644
index 000000000000..50f3aeb0b4f0
--- /dev/null
+++ b/drivers/soc/qcom/memshare/msm_memshare.c
@@ -0,0 +1,847 @@
+/* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/dma-mapping.h>
+#include <linux/mutex.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/notifier.h>
+#include <soc/qcom/subsystem_restart.h>
+#include <soc/qcom/subsystem_notif.h>
+#include <soc/qcom/msm_qmi_interface.h>
+#include <soc/qcom/scm.h>
+#include "msm_memshare.h"
+#include "heap_mem_ext_v01.h"
+
+/* Macros */
+#define MEMSHARE_DEV_NAME "memshare"
+#define MEMSHARE_CHILD_DEV_NAME "memshare_child"
+static DEFINE_DMA_ATTRS(attrs);
+
+static struct qmi_handle *mem_share_svc_handle;
+static void mem_share_svc_recv_msg(struct work_struct *work);
+static DECLARE_DELAYED_WORK(work_recv_msg, mem_share_svc_recv_msg);
+static struct workqueue_struct *mem_share_svc_workqueue;
+
+/* Memshare Driver Structure */
+struct memshare_driver {
+ struct device *dev;
+ struct mutex mem_share;
+ struct mutex mem_free;
+ struct work_struct memshare_init_work;
+};
+
+struct memshare_child {
+ struct device *dev;
+};
+
+static struct memshare_driver *memsh_drv;
+static struct memshare_child *memsh_child;
+static struct mem_blocks memblock[MAX_CLIENTS];
+static uint32_t num_clients;
+static struct msg_desc mem_share_svc_alloc_req_desc = {
+ .max_msg_len = MEM_ALLOC_REQ_MAX_MSG_LEN_V01,
+ .msg_id = MEM_ALLOC_REQ_MSG_V01,
+ .ei_array = mem_alloc_req_msg_data_v01_ei,
+};
+
+static struct msg_desc mem_share_svc_alloc_resp_desc = {
+ .max_msg_len = MEM_ALLOC_REQ_MAX_MSG_LEN_V01,
+ .msg_id = MEM_ALLOC_RESP_MSG_V01,
+ .ei_array = mem_alloc_resp_msg_data_v01_ei,
+};
+
+static struct msg_desc mem_share_svc_free_req_desc = {
+ .max_msg_len = MEM_FREE_REQ_MAX_MSG_LEN_V01,
+ .msg_id = MEM_FREE_REQ_MSG_V01,
+ .ei_array = mem_free_req_msg_data_v01_ei,
+};
+
+static struct msg_desc mem_share_svc_free_resp_desc = {
+ .max_msg_len = MEM_FREE_REQ_MAX_MSG_LEN_V01,
+ .msg_id = MEM_FREE_RESP_MSG_V01,
+ .ei_array = mem_free_resp_msg_data_v01_ei,
+};
+
+static struct msg_desc mem_share_svc_alloc_generic_req_desc = {
+ .max_msg_len = MEM_ALLOC_REQ_MAX_MSG_LEN_V01,
+ .msg_id = MEM_ALLOC_GENERIC_REQ_MSG_V01,
+ .ei_array = mem_alloc_generic_req_msg_data_v01_ei,
+};
+
+static struct msg_desc mem_share_svc_alloc_generic_resp_desc = {
+ .max_msg_len = MEM_ALLOC_REQ_MAX_MSG_LEN_V01,
+ .msg_id = MEM_ALLOC_GENERIC_RESP_MSG_V01,
+ .ei_array = mem_alloc_generic_resp_msg_data_v01_ei,
+};
+
+static struct msg_desc mem_share_svc_free_generic_req_desc = {
+ .max_msg_len = MEM_FREE_REQ_MAX_MSG_LEN_V01,
+ .msg_id = MEM_FREE_GENERIC_REQ_MSG_V01,
+ .ei_array = mem_free_generic_req_msg_data_v01_ei,
+};
+
+static struct msg_desc mem_share_svc_free_generic_resp_desc = {
+ .max_msg_len = MEM_FREE_REQ_MAX_MSG_LEN_V01,
+ .msg_id = MEM_FREE_GENERIC_RESP_MSG_V01,
+ .ei_array = mem_free_generic_resp_msg_data_v01_ei,
+};
+
+static struct msg_desc mem_share_svc_size_query_req_desc = {
+ .max_msg_len = MEM_FREE_REQ_MAX_MSG_LEN_V01,
+ .msg_id = MEM_QUERY_SIZE_REQ_MSG_V01,
+ .ei_array = mem_query_size_req_msg_data_v01_ei,
+};
+
+static struct msg_desc mem_share_svc_size_query_resp_desc = {
+ .max_msg_len = MEM_FREE_REQ_MAX_MSG_LEN_V01,
+ .msg_id = MEM_QUERY_SIZE_RESP_MSG_V01,
+ .ei_array = mem_query_size_resp_msg_data_v01_ei,
+};
+
+static int check_client(int client_id, int proc, int request)
+{
+ int i = 0;
+ int found = DHMS_MEM_CLIENT_INVALID;
+
+ for (i = 0; i < MAX_CLIENTS; i++) {
+ if (memblock[i].client_id == client_id &&
+ memblock[i].peripheral == proc) {
+ found = i;
+ break;
+ }
+ }
+ if ((found == DHMS_MEM_CLIENT_INVALID) && !request) {
+ pr_debug("No registered client, adding a new client\n");
+ /* Add a new client */
+ for (i = 0; i < MAX_CLIENTS; i++) {
+ if (memblock[i].client_id == DHMS_MEM_CLIENT_INVALID) {
+ memblock[i].client_id = client_id;
+ memblock[i].alloted = 0;
+ memblock[i].guarantee = 0;
+ memblock[i].peripheral = proc;
+ found = i;
+ break;
+ }
+ }
+ }
+
+ return found;
+}
+
+void free_client(int id)
+{
+
+ memblock[id].size = 0;
+ memblock[id].phy_addr = 0;
+ memblock[id].virtual_addr = 0;
+ memblock[id].alloted = 0;
+ memblock[id].client_id = DHMS_MEM_CLIENT_INVALID;
+ memblock[id].guarantee = 0;
+ memblock[id].peripheral = -1;
+ memblock[id].sequence_id = -1;
+ memblock[id].memory_type = MEMORY_CMA;
+
+}
+
+void free_mem_clients(int proc)
+{
+ int i;
+
+ pr_debug("memshare: freeing clients\n");
+
+ for (i = 0; i < MAX_CLIENTS; i++) {
+ if (memblock[i].peripheral == proc &&
+ !memblock[i].guarantee && memblock[i].alloted) {
+ pr_debug("Freeing memory for client id: %d\n",
+ memblock[i].client_id);
+ dma_free_attrs(memsh_drv->dev, memblock[i].size,
+ memblock[i].virtual_addr, memblock[i].phy_addr,
+ &attrs);
+ free_client(i);
+ }
+ }
+}
+
+void fill_alloc_response(struct mem_alloc_generic_resp_msg_v01 *resp,
+ int id, int *flag)
+{
+ resp->sequence_id_valid = 1;
+ resp->sequence_id = memblock[id].sequence_id;
+ resp->dhms_mem_alloc_addr_info_valid = 1;
+ resp->dhms_mem_alloc_addr_info_len = 1;
+ resp->dhms_mem_alloc_addr_info[0].phy_addr = memblock[id].phy_addr;
+ resp->dhms_mem_alloc_addr_info[0].num_bytes = memblock[id].size;
+ if (!*flag) {
+ resp->resp.result = QMI_RESULT_SUCCESS_V01;
+ resp->resp.error = QMI_ERR_NONE_V01;
+ } else {
+ resp->resp.result = QMI_RESULT_FAILURE_V01;
+ resp->resp.error = QMI_ERR_NO_MEMORY_V01;
+ }
+
+}
+
+void initialize_client(void)
+{
+ int i;
+
+ for (i = 0; i < MAX_CLIENTS; i++) {
+ memblock[i].alloted = 0;
+ memblock[i].size = 0;
+ memblock[i].guarantee = 0;
+ memblock[i].phy_addr = 0;
+ memblock[i].virtual_addr = 0;
+ memblock[i].client_id = DHMS_MEM_CLIENT_INVALID;
+ memblock[i].peripheral = -1;
+ memblock[i].sequence_id = -1;
+ memblock[i].memory_type = MEMORY_CMA;
+ }
+ dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs);
+}
+
+static int modem_notifier_cb(struct notifier_block *this, unsigned long code,
+ void *_cmd)
+{
+ pr_debug("memshare: Modem notification\n");
+
+ switch (code) {
+
+ case SUBSYS_AFTER_POWERUP:
+ pr_err("memshare: Modem Restart has happened\n");
+ free_mem_clients(DHMS_MEM_PROC_MPSS_V01);
+ break;
+
+ default:
+ pr_debug("Memshare: code: %lu\n", code);
+ break;
+ }
+
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block nb = {
+ .notifier_call = modem_notifier_cb,
+};
+
+static int handle_alloc_req(void *req_h, void *req, void *conn_h)
+{
+ struct mem_alloc_req_msg_v01 *alloc_req;
+ struct mem_alloc_resp_msg_v01 alloc_resp;
+ int rc = 0;
+
+ alloc_req = (struct mem_alloc_req_msg_v01 *)req;
+ pr_debug("%s: Received Alloc Request\n", __func__);
+ pr_debug("%s: req->num_bytes = %d\n", __func__, alloc_req->num_bytes);
+ mutex_lock(&memsh_drv->mem_share);
+ if (!memblock[GPS].size) {
+ memset(&alloc_resp, 0, sizeof(struct mem_alloc_resp_msg_v01));
+ alloc_resp.resp = QMI_RESULT_FAILURE_V01;
+ rc = memshare_alloc(memsh_drv->dev, alloc_req->num_bytes,
+ &memblock[GPS]);
+ }
+ alloc_resp.num_bytes_valid = 1;
+ alloc_resp.num_bytes = alloc_req->num_bytes;
+ alloc_resp.handle_valid = 1;
+ alloc_resp.handle = memblock[GPS].phy_addr;
+ if (rc) {
+ alloc_resp.resp = QMI_RESULT_FAILURE_V01;
+ memblock[GPS].size = 0;
+ } else {
+ alloc_resp.resp = QMI_RESULT_SUCCESS_V01;
+ }
+
+ mutex_unlock(&memsh_drv->mem_share);
+
+ pr_debug("alloc_resp.num_bytes :%d, alloc_resp.handle :%lx, alloc_resp.mem_req_result :%lx\n",
+ alloc_resp.num_bytes,
+ (unsigned long int)alloc_resp.handle,
+ (unsigned long int)alloc_resp.resp);
+ rc = qmi_send_resp_from_cb(mem_share_svc_handle, conn_h, req_h,
+ &mem_share_svc_alloc_resp_desc, &alloc_resp,
+ sizeof(alloc_resp));
+ if (rc < 0)
+ pr_err("In %s, Error sending the alloc request: %d\n",
+ __func__, rc);
+
+ return rc;
+}
+
+static int handle_alloc_generic_req(void *req_h, void *req, void *conn_h)
+{
+ struct mem_alloc_generic_req_msg_v01 *alloc_req;
+ struct mem_alloc_generic_resp_msg_v01 *alloc_resp;
+ int rc, resp = 0;
+ int client_id;
+
+ alloc_req = (struct mem_alloc_generic_req_msg_v01 *)req;
+ pr_debug("alloc request client id: %d proc _id: %d\n",
+ alloc_req->client_id, alloc_req->proc_id);
+ mutex_lock(&memsh_drv->mem_share);
+ alloc_resp = kzalloc(sizeof(struct mem_alloc_generic_resp_msg_v01),
+ GFP_KERNEL);
+ if (!alloc_resp) {
+ mutex_unlock(&memsh_drv->mem_share);
+ return -ENOMEM;
+ }
+ alloc_resp->resp.result = QMI_RESULT_FAILURE_V01;
+ alloc_resp->resp.error = QMI_ERR_NO_MEMORY_V01;
+ client_id = check_client(alloc_req->client_id, alloc_req->proc_id,
+ CHECK);
+
+ if (client_id >= MAX_CLIENTS) {
+ pr_err("memshare: %s client not found, requested client: %d, proc_id: %d\n",
+ __func__, alloc_req->client_id,
+ alloc_req->proc_id);
+ return -EINVAL;
+ }
+
+ if (!memblock[client_id].alloted) {
+ rc = memshare_alloc(memsh_drv->dev, alloc_req->num_bytes,
+ &memblock[client_id]);
+ if (rc) {
+ pr_err("In %s,Unable to allocate memory for requested client\n",
+ __func__);
+ resp = 1;
+ }
+ if (!resp) {
+ memblock[client_id].alloted = 1;
+ memblock[client_id].size = alloc_req->num_bytes;
+ memblock[client_id].peripheral = alloc_req->proc_id;
+ }
+ }
+ memblock[client_id].sequence_id = alloc_req->sequence_id;
+
+ fill_alloc_response(alloc_resp, client_id, &resp);
+
+ mutex_unlock(&memsh_drv->mem_share);
+ pr_debug("alloc_resp.num_bytes :%d, alloc_resp.handle :%lx, alloc_resp.mem_req_result :%lx\n",
+ alloc_resp->dhms_mem_alloc_addr_info[0].num_bytes,
+ (unsigned long int)
+ alloc_resp->dhms_mem_alloc_addr_info[0].phy_addr,
+ (unsigned long int)alloc_resp->resp.result);
+ rc = qmi_send_resp_from_cb(mem_share_svc_handle, conn_h, req_h,
+ &mem_share_svc_alloc_generic_resp_desc, alloc_resp,
+ sizeof(alloc_resp));
+
+ if (rc < 0)
+ pr_err("In %s, Error sending the alloc request: %d\n",
+ __func__, rc);
+
+ return rc;
+}
+
+static int handle_free_req(void *req_h, void *req, void *conn_h)
+{
+ struct mem_free_req_msg_v01 *free_req;
+ struct mem_free_resp_msg_v01 free_resp;
+ int rc;
+
+ mutex_lock(&memsh_drv->mem_free);
+ if (!memblock[GPS].guarantee) {
+ free_req = (struct mem_free_req_msg_v01 *)req;
+ pr_debug("%s: Received Free Request\n", __func__);
+ memset(&free_resp, 0, sizeof(struct mem_free_resp_msg_v01));
+ pr_debug("In %s: pblk->virtual_addr :%lx, pblk->phy_addr: %lx\n,size: %d",
+ __func__,
+ (unsigned long int)memblock[GPS].virtual_addr,
+ (unsigned long int)free_req->handle,
+ memblock[GPS].size);
+ dma_free_coherent(memsh_drv->dev, memblock[GPS].size,
+ memblock[GPS].virtual_addr,
+ free_req->handle);
+ }
+ free_resp.resp = QMI_RESULT_SUCCESS_V01;
+ mutex_unlock(&memsh_drv->mem_free);
+ rc = qmi_send_resp_from_cb(mem_share_svc_handle, conn_h, req_h,
+ &mem_share_svc_free_resp_desc, &free_resp,
+ sizeof(free_resp));
+ if (rc < 0)
+ pr_err("In %s, Error sending the free request: %d\n",
+ __func__, rc);
+
+ return rc;
+}
+
+static int handle_free_generic_req(void *req_h, void *req, void *conn_h)
+{
+ struct mem_free_generic_req_msg_v01 *free_req;
+ struct mem_free_generic_resp_msg_v01 free_resp;
+ int rc;
+ int flag = 0;
+ uint32_t client_id;
+
+ free_req = (struct mem_free_generic_req_msg_v01 *)req;
+ pr_debug("%s: Received Free Request\n", __func__);
+ mutex_lock(&memsh_drv->mem_free);
+ memset(&free_resp, 0, sizeof(struct mem_free_generic_resp_msg_v01));
+ free_resp.resp.error = QMI_ERR_INTERNAL_V01;
+ free_resp.resp.result = QMI_RESULT_FAILURE_V01;
+ pr_debug("Client id: %d proc id: %d\n", free_req->client_id,
+ free_req->proc_id);
+ client_id = check_client(free_req->client_id, free_req->proc_id, FREE);
+ if (client_id == DHMS_MEM_CLIENT_INVALID) {
+ pr_err("In %s, Invalid client request to free memory\n",
+ __func__);
+ flag = 1;
+ } else if (!memblock[client_id].guarantee &&
+ memblock[client_id].alloted) {
+ pr_debug("In %s: pblk->virtual_addr :%lx, pblk->phy_addr: %lx\n,size: %d",
+ __func__,
+ (unsigned long int)
+ memblock[client_id].virtual_addr,
+ (unsigned long int)memblock[client_id].phy_addr,
+ memblock[client_id].size);
+ dma_free_attrs(memsh_drv->dev, memblock[client_id].size,
+ memblock[client_id].virtual_addr,
+ memblock[client_id].phy_addr,
+ &attrs);
+ free_client(client_id);
+ } else {
+ pr_err("In %s, Request came for a guaranteed client cannot free up the memory\n",
+ __func__);
+ }
+
+ if (flag) {
+ free_resp.resp.result = QMI_RESULT_FAILURE_V01;
+ free_resp.resp.error = QMI_ERR_INVALID_ID_V01;
+ } else {
+ free_resp.resp.result = QMI_RESULT_SUCCESS_V01;
+ free_resp.resp.error = QMI_ERR_NONE_V01;
+ }
+
+ mutex_unlock(&memsh_drv->mem_free);
+ rc = qmi_send_resp_from_cb(mem_share_svc_handle, conn_h, req_h,
+ &mem_share_svc_free_generic_resp_desc, &free_resp,
+ sizeof(free_resp));
+
+ if (rc < 0)
+ pr_err("In %s, Error sending the free request: %d\n",
+ __func__, rc);
+
+ return rc;
+}
+
+static int handle_query_size_req(void *req_h, void *req, void *conn_h)
+{
+ int rc, client_id;
+ struct mem_query_size_req_msg_v01 *query_req;
+ struct mem_query_size_rsp_msg_v01 *query_resp;
+
+ query_req = (struct mem_query_size_req_msg_v01 *)req;
+ mutex_lock(&memsh_drv->mem_share);
+ query_resp = kzalloc(sizeof(struct mem_query_size_rsp_msg_v01),
+ GFP_KERNEL);
+ if (!query_resp) {
+ mutex_unlock(&memsh_drv->mem_share);
+ return -ENOMEM;
+ }
+ pr_debug("query request client id: %d proc _id: %d\n",
+ query_req->client_id, query_req->proc_id);
+ client_id = check_client(query_req->client_id, query_req->proc_id,
+ CHECK);
+
+ if (client_id >= MAX_CLIENTS) {
+ pr_err("memshare: %s client not found, requested client: %d, proc_id: %d\n",
+ __func__, query_req->client_id,
+ query_req->proc_id);
+ return -EINVAL;
+ }
+
+ if (memblock[client_id].size) {
+ query_resp->size_valid = 1;
+ query_resp->size = memblock[client_id].size;
+ } else {
+ query_resp->size_valid = 1;
+ query_resp->size = 0;
+ }
+ query_resp->resp.result = QMI_RESULT_SUCCESS_V01;
+ query_resp->resp.error = QMI_ERR_NONE_V01;
+ mutex_unlock(&memsh_drv->mem_share);
+
+ pr_debug("query_resp.size :%d, alloc_resp.mem_req_result :%lx\n",
+ query_resp->size,
+ (unsigned long int)query_resp->resp.result);
+ rc = qmi_send_resp_from_cb(mem_share_svc_handle, conn_h, req_h,
+ &mem_share_svc_size_query_resp_desc, query_resp,
+ sizeof(query_resp));
+
+ if (rc < 0)
+ pr_err("In %s, Error sending the query request: %d\n",
+ __func__, rc);
+
+ return rc;
+}
+
+static int mem_share_svc_connect_cb(struct qmi_handle *handle,
+ void *conn_h)
+{
+ if (mem_share_svc_handle != handle || !conn_h)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int mem_share_svc_disconnect_cb(struct qmi_handle *handle,
+ void *conn_h)
+{
+ if (mem_share_svc_handle != handle || !conn_h)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int mem_share_svc_req_desc_cb(unsigned int msg_id,
+ struct msg_desc **req_desc)
+{
+ int rc;
+
+ pr_debug("memshare: In %s\n", __func__);
+ switch (msg_id) {
+ case MEM_ALLOC_REQ_MSG_V01:
+ *req_desc = &mem_share_svc_alloc_req_desc;
+ rc = sizeof(struct mem_alloc_req_msg_v01);
+ break;
+
+ case MEM_FREE_REQ_MSG_V01:
+ *req_desc = &mem_share_svc_free_req_desc;
+ rc = sizeof(struct mem_free_req_msg_v01);
+ break;
+
+ case MEM_ALLOC_GENERIC_REQ_MSG_V01:
+ *req_desc = &mem_share_svc_alloc_generic_req_desc;
+ rc = sizeof(struct mem_alloc_generic_req_msg_v01);
+ break;
+
+ case MEM_FREE_GENERIC_REQ_MSG_V01:
+ *req_desc = &mem_share_svc_free_generic_req_desc;
+ rc = sizeof(struct mem_free_generic_req_msg_v01);
+ break;
+
+ case MEM_QUERY_SIZE_REQ_MSG_V01:
+ *req_desc = &mem_share_svc_size_query_req_desc;
+ rc = sizeof(struct mem_query_size_req_msg_v01);
+ break;
+
+ default:
+ rc = -ENOTSUPP;
+ break;
+ }
+ return rc;
+}
+
+static int mem_share_svc_req_cb(struct qmi_handle *handle, void *conn_h,
+ void *req_h, unsigned int msg_id, void *req)
+{
+ int rc;
+
+ pr_debug("memshare: In %s\n", __func__);
+ if (mem_share_svc_handle != handle || !conn_h)
+ return -EINVAL;
+
+ switch (msg_id) {
+ case MEM_ALLOC_REQ_MSG_V01:
+ rc = handle_alloc_req(req_h, req, conn_h);
+ break;
+
+ case MEM_FREE_REQ_MSG_V01:
+ rc = handle_free_req(req_h, req, conn_h);
+ break;
+
+ case MEM_ALLOC_GENERIC_REQ_MSG_V01:
+ rc = handle_alloc_generic_req(req_h, req, conn_h);
+ break;
+
+ case MEM_FREE_GENERIC_REQ_MSG_V01:
+ rc = handle_free_generic_req(req_h, req, conn_h);
+ break;
+
+ case MEM_QUERY_SIZE_REQ_MSG_V01:
+ rc = handle_query_size_req(req_h, req, conn_h);
+ break;
+
+ default:
+ rc = -ENOTSUPP;
+ break;
+ }
+ return rc;
+}
+
+static void mem_share_svc_recv_msg(struct work_struct *work)
+{
+ int rc;
+
+ pr_debug("memshare: In %s\n", __func__);
+ do {
+ pr_debug("%s: Notified about a Receive Event", __func__);
+ } while ((rc = qmi_recv_msg(mem_share_svc_handle)) == 0);
+
+ if (rc != -ENOMSG)
+ pr_err("%s: Error receiving message\n", __func__);
+}
+
+static void qmi_mem_share_svc_ntfy(struct qmi_handle *handle,
+ enum qmi_event_type event, void *priv)
+{
+ pr_debug("memshare: In %s\n", __func__);
+ switch (event) {
+ case QMI_RECV_MSG:
+ queue_delayed_work(mem_share_svc_workqueue,
+ &work_recv_msg, 0);
+ break;
+ default:
+ break;
+ }
+}
+
+static struct qmi_svc_ops_options mem_share_svc_ops_options = {
+ .version = 1,
+ .service_id = MEM_SHARE_SERVICE_SVC_ID,
+ .service_vers = MEM_SHARE_SERVICE_VERS,
+ .service_ins = MEM_SHARE_SERVICE_INS_ID,
+ .connect_cb = mem_share_svc_connect_cb,
+ .disconnect_cb = mem_share_svc_disconnect_cb,
+ .req_desc_cb = mem_share_svc_req_desc_cb,
+ .req_cb = mem_share_svc_req_cb,
+};
+
+int memshare_alloc(struct device *dev,
+ unsigned int block_size,
+ struct mem_blocks *pblk)
+{
+
+ int ret;
+
+ pr_debug("%s: memshare_alloc called", __func__);
+ if (!pblk) {
+ pr_err("%s: Failed to alloc\n", __func__);
+ return -ENOMEM;
+ }
+
+ pblk->virtual_addr = dma_alloc_attrs(dev, block_size,
+ &pblk->phy_addr, GFP_KERNEL,
+ &attrs);
+ if (pblk->virtual_addr == NULL) {
+ pr_err("allocation failed, %d\n", block_size);
+ ret = -ENOMEM;
+ return ret;
+ }
+ pr_debug("pblk->phy_addr :%lx, pblk->virtual_addr %lx\n",
+ (unsigned long int)pblk->phy_addr,
+ (unsigned long int)pblk->virtual_addr);
+ return 0;
+}
+
+static void memshare_init_worker(struct work_struct *work)
+{
+ int rc;
+
+ mem_share_svc_workqueue =
+ create_singlethread_workqueue("mem_share_svc");
+ if (!mem_share_svc_workqueue)
+ return;
+
+ mem_share_svc_handle = qmi_handle_create(qmi_mem_share_svc_ntfy, NULL);
+ if (!mem_share_svc_handle) {
+ pr_err("%s: Creating mem_share_svc qmi handle failed\n",
+ __func__);
+ destroy_workqueue(mem_share_svc_workqueue);
+ return;
+ }
+ rc = qmi_svc_register(mem_share_svc_handle, &mem_share_svc_ops_options);
+ if (rc < 0) {
+ pr_err("%s: Registering mem share svc failed %d\n",
+ __func__, rc);
+ qmi_handle_destroy(mem_share_svc_handle);
+ destroy_workqueue(mem_share_svc_workqueue);
+ return;
+ }
+ pr_debug("memshare: memshare_init successful\n");
+}
+
+static int memshare_child_probe(struct platform_device *pdev)
+{
+ int rc;
+ uint32_t size, client_id;
+ const char *name;
+ struct memshare_child *drv;
+
+ drv = devm_kzalloc(&pdev->dev, sizeof(struct memshare_child),
+ GFP_KERNEL);
+
+ if (!drv) {
+ pr_err("Unable to allocate memory to driver\n");
+ return -ENOMEM;
+ }
+
+ drv->dev = &pdev->dev;
+ memsh_child = drv;
+ platform_set_drvdata(pdev, memsh_child);
+
+ rc = of_property_read_u32(pdev->dev.of_node, "qcom,peripheral-size",
+ &size);
+ if (rc) {
+ pr_err("In %s, Error reading size of clients, rc: %d\n",
+ __func__, rc);
+ return rc;
+ }
+
+ rc = of_property_read_u32(pdev->dev.of_node, "qcom,client-id",
+ &client_id);
+ if (rc) {
+ pr_err("In %s, Error reading client id, rc: %d\n",
+ __func__, rc);
+ return rc;
+ }
+
+ memblock[num_clients].guarantee = of_property_read_bool(
+ pdev->dev.of_node,
+ "qcom,allocate-boot-time");
+
+ rc = of_property_read_string(pdev->dev.of_node, "label",
+ &name);
+ if (rc) {
+ pr_err("In %s, Error reading peripheral info for client, rc: %d\n",
+ __func__, rc);
+ return rc;
+ }
+
+ if (strcmp(name, "modem") == 0)
+ memblock[num_clients].peripheral = DHMS_MEM_PROC_MPSS_V01;
+ else if (strcmp(name, "adsp") == 0)
+ memblock[num_clients].peripheral = DHMS_MEM_PROC_ADSP_V01;
+ else if (strcmp(name, "wcnss") == 0)
+ memblock[num_clients].peripheral = DHMS_MEM_PROC_WCNSS_V01;
+
+ memblock[num_clients].size = size;
+ memblock[num_clients].client_id = client_id;
+
+ if (memblock[num_clients].guarantee) {
+ rc = memshare_alloc(memsh_child->dev,
+ memblock[num_clients].size,
+ &memblock[num_clients]);
+ if (rc) {
+ pr_err("In %s, Unable to allocate memory for guaranteed clients, rc: %d\n",
+ __func__, rc);
+ return rc;
+ }
+ memblock[num_clients].alloted = 1;
+ }
+
+ num_clients++;
+
+ return 0;
+}
+
+static int memshare_probe(struct platform_device *pdev)
+{
+ int rc;
+ struct memshare_driver *drv;
+
+ drv = devm_kzalloc(&pdev->dev, sizeof(struct memshare_driver),
+ GFP_KERNEL);
+
+ if (!drv) {
+ pr_err("Unable to allocate memory to driver\n");
+ return -ENOMEM;
+ }
+
+ /* Memory allocation has been done successfully */
+ mutex_init(&drv->mem_free);
+ mutex_init(&drv->mem_share);
+
+ INIT_WORK(&drv->memshare_init_work, memshare_init_worker);
+ schedule_work(&drv->memshare_init_work);
+
+ drv->dev = &pdev->dev;
+ memsh_drv = drv;
+ platform_set_drvdata(pdev, memsh_drv);
+ initialize_client();
+ num_clients = 0;
+
+ rc = of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
+
+ if (rc) {
+ pr_err("In %s, error populating the devices\n", __func__);
+ return rc;
+ }
+
+ subsys_notif_register_notifier("modem", &nb);
+ pr_info("In %s, Memshare probe success\n", __func__);
+
+ return 0;
+}
+
+static int memshare_remove(struct platform_device *pdev)
+{
+ if (!memsh_drv)
+ return 0;
+
+ qmi_svc_unregister(mem_share_svc_handle);
+ flush_workqueue(mem_share_svc_workqueue);
+ qmi_handle_destroy(mem_share_svc_handle);
+ destroy_workqueue(mem_share_svc_workqueue);
+
+ return 0;
+}
+
+static int memshare_child_remove(struct platform_device *pdev)
+{
+ if (!memsh_child)
+ return 0;
+
+ return 0;
+}
+
+static struct of_device_id memshare_match_table[] = {
+ {
+ .compatible = "qcom,memshare",
+ },
+ {}
+};
+
+static struct of_device_id memshare_match_table1[] = {
+ {
+ .compatible = "qcom,memshare-peripheral",
+ },
+ {}
+};
+
+
+static struct platform_driver memshare_pdriver = {
+ .probe = memshare_probe,
+ .remove = memshare_remove,
+ .driver = {
+ .name = MEMSHARE_DEV_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = memshare_match_table,
+ },
+};
+
+static struct platform_driver memshare_pchild = {
+ .probe = memshare_child_probe,
+ .remove = memshare_child_remove,
+ .driver = {
+ .name = MEMSHARE_CHILD_DEV_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = memshare_match_table1,
+ },
+};
+
+module_platform_driver(memshare_pdriver);
+module_platform_driver(memshare_pchild);
+
+MODULE_DESCRIPTION("Mem Share QMI Service Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/soc/qcom/memshare/msm_memshare.h b/drivers/soc/qcom/memshare/msm_memshare.h
new file mode 100644
index 000000000000..6ea44ac8d296
--- /dev/null
+++ b/drivers/soc/qcom/memshare/msm_memshare.h
@@ -0,0 +1,57 @@
+/* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef _LINUX_MEM_SHARE_H
+#define _LINUX_MEM_SHARE_H
+
+#define MEM_SHARE_SERVICE_SVC_ID 0x00000034
+#define MEM_SHARE_SERVICE_INS_ID 1
+#define MEM_SHARE_SERVICE_VERS 1
+
+#define MEMORY_CMA 1
+#define MEMORY_NON_CMA 0
+#define MAX_CLIENTS 10
+#define GPS 0
+#define CHECK 0
+#define FREE 1
+
+struct mem_blocks {
+ /* Client Id information */
+ uint32_t client_id;
+ /* Peripheral associated with client */
+ uint32_t peripheral;
+ /* Sequence Id */
+ uint32_t sequence_id;
+ /* CMA or Non-CMA region */
+ uint32_t memory_type;
+ /* Guaranteed Memory */
+ uint32_t guarantee;
+ /* Memory alloted or not */
+ uint32_t alloted;
+ /* Size required for client */
+ uint32_t size;
+ /* start address of the memory block reserved by server memory
+ * subsystem to client
+ */
+ phys_addr_t phy_addr;
+ /* Virtual address for the physical address allocated
+ */
+ void *virtual_addr;
+};
+
+int memshare_alloc(struct device *dev,
+ unsigned int block_size,
+ struct mem_blocks *pblk);
+void memshare_free(unsigned int block_size,
+ struct mem_blocks *pblk);
+#endif /* _LINUX_MEM_SHARE_H */
generated by cgit v1.2.3 (git 2.25.1) at 2026-04-27 13:04:12 +0000