platform/msm_shared/smem.h

/*
 * Copyright (c) 2009, Google Inc.
 * All rights reserved.
 *
 * Copyright (c) 2009-2018, The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef __PLATFORM_MSM_SHARED_SMEM_H
#define __PLATFORM_MSM_SHARED_SMEM_H

#include <sys/types.h>
#include <platform.h>
#include <malloc.h>
#include <string.h>

#define SMEM_V7_SMEM_MAX_PMIC_DEVICES   1
#define SMEM_V8_SMEM_MAX_PMIC_DEVICES   3
#define SMEM_V11_SMEM_MAX_PMIC_DEVICES  4 // this is the max that device tree currently supports
#define SMEM_MAX_PMIC_DEVICES           SMEM_V11_SMEM_MAX_PMIC_DEVICES

#define SMEM_RAM_PTABLE_VERSION_OFFSET  8

#define RAM_PART_NAME_LENGTH            16
#define RAM_NUM_PART_ENTRIES            32

#define _SMEM_RAM_PTABLE_MAGIC_1        0x9DA5E0A8
#define _SMEM_RAM_PTABLE_MAGIC_2        0xAF9EC4E2

#define SMEM_TARGET_INFO_IDENTIFIER     0x49494953

#define SMEM_NUM_SMD_STREAM_CHANNELS        64

enum smem_ram_ptable_version
{
	SMEM_RAM_PTABLE_VERSION_0,
	SMEM_RAM_PTABLE_VERSION_1,
	SMEM_RAM_PTABLE_VERSION_2,
};

struct smem_proc_comm {
	unsigned command;
	unsigned status;
	unsigned data1;
	unsigned data2;
};

struct smem_heap_info {
	unsigned initialized;
	unsigned free_offset;
	unsigned heap_remaining;
	unsigned reserved;
};

struct smem_alloc_info {
	unsigned allocated;
	unsigned offset;
	unsigned size;
	unsigned base_ext;
};

struct smem_board_info_v2 {
	unsigned format;
	unsigned msm_id;
	unsigned msm_version;
	char build_id[32];
	unsigned raw_msm_id;
	unsigned raw_msm_version;
};

struct smem_addr_info
{
	uint32_t identifier; /* Shared memory magic number */
	uint32_t size; /* Shared memory Size */
	uint32_t phy_addr; /* Shared memory Addr */
};

typedef enum
{
   PMIC_IS_PM6610,
   PMIC_IS_PM6620,
   PMIC_IS_PM6640,
   PMIC_IS_PM6650,
   PMIC_IS_PM7500,
   PMIC_IS_PANORAMIX,
   PMIC_IS_PM6652,
   PMIC_IS_PM6653,
   PMIC_IS_PM6658,
   PMIC_IS_EPIC,
   PMIC_IS_HAN,
   PMIC_IS_KIP,
   PMIC_IS_WOOKIE,
   PMIC_IS_PM8058,
   PMIC_IS_PM8028,
   PMIC_IS_PM8901,
   PMIC_IS_PM8027 ,
   PMIC_IS_ISL_9519,
   PMIC_IS_PM8921,
   PMIC_IS_PM8018,
   PMIC_IS_PM8015,
   PMIC_IS_PM8014,
   PMIC_IS_PM8821,
   PMIC_IS_PM8038,
   PMIC_IS_PM8922,
   PMIC_IS_PM8917,
   PMIC_IS_INVALID = 0x7fffffff,
} pm_model_type_afly;

typedef enum
{
	PMIC_IS_UNKNOWN   = 0,
	PMIC_IS_PM8941    = 1,
	PMIC_IS_PM8841    = 2,
	PMIC_IS_PM8019    = 3,
	PMIC_IS_PM8026    = 4,
	PMIC_IS_PM8110    = 5,
	PMIC_IS_PM8916    = 11,
	PMIC_IS_PM8909    = 13,
	PMIC_IS_PMI8950   = 17,
	PMIC_IS_PMI8994   = 10,
	PMIC_IS_PMI8996   = 19,
	PMIC_IS_PM660     = 27,
	PMIC_IS_PMI632    = 37,
} pm_model_type_bfly;

struct smem_board_info_v3 {
	unsigned format;
	unsigned msm_id;
	unsigned msm_version;
	char build_id[32];
	unsigned raw_msm_id;
	unsigned raw_msm_version;
	unsigned hw_platform;
};

struct smem_board_info_v4 {
	struct smem_board_info_v3 board_info_v3;
	unsigned platform_version;
	unsigned buffer_align;	//Need for 8 bytes alignment while reading from shared memory.
};

struct smem_board_info_v5 {
	struct smem_board_info_v3 board_info_v3;
	unsigned platform_version;
	unsigned fused_chip;
};

struct smem_board_info_v6 {
	struct smem_board_info_v3 board_info_v3;
	unsigned platform_version;
	unsigned fused_chip;
	unsigned platform_subtype;
	unsigned buffer_align;	//Need for 8 bytes alignment while reading from shared memory.
};

struct smem_board_info_v7 {
	struct smem_board_info_v3 board_info_v3;
	unsigned platform_version;
	unsigned fused_chip;
	unsigned platform_subtype;
	unsigned pmic_type;
	unsigned pmic_version;
	unsigned buffer_align;	//Need for 8 bytes alignment while reading from shared memory.
};

struct smem_pmic_info {
	unsigned pmic_type;
	unsigned pmic_version;
};

struct smem_board_info_v8 {
	struct smem_board_info_v3 board_info_v3;
	unsigned platform_version;
	unsigned fused_chip;
	unsigned platform_subtype;
	struct smem_pmic_info pmic_info[SMEM_V8_SMEM_MAX_PMIC_DEVICES];
};

struct smem_board_info_v9 {
	struct smem_board_info_v3 board_info_v3;
	unsigned platform_version;
	unsigned fused_chip;
	unsigned platform_subtype;
	struct smem_pmic_info pmic_info[SMEM_V8_SMEM_MAX_PMIC_DEVICES];
	uint32_t foundry_id; /* Used as foundry_id only for v9  */
};

struct smem_board_info_v10 {
	struct smem_board_info_v3 board_info_v3;
	unsigned platform_version;
	unsigned fused_chip;
	unsigned platform_subtype;
	struct smem_pmic_info pmic_info[SMEM_V8_SMEM_MAX_PMIC_DEVICES];
	uint32_t foundry_id; /* Used as foundry_id only for v9  */
	uint32_t chip_serial; /* Used as serial number for v10 */
};

struct smem_board_info_v11 {
	struct smem_board_info_v3 board_info_v3;
	unsigned platform_version;
	unsigned fused_chip;
	unsigned platform_subtype;
	struct smem_pmic_info pmic_info[SMEM_V8_SMEM_MAX_PMIC_DEVICES]; // Depreciated
	uint32_t foundry_id; /* Used as foundry_id only for v9  */
	uint32_t chip_serial; /* Used as serial number for v10 */
	uint32_t num_pmics; /* Number of pmics in array */
	uint32_t pmic_array_offset; /* Offset from base of structure to array of pmic info types */
};

typedef struct {
	unsigned key_len;
	unsigned iv_len;
	unsigned char key[32];
	unsigned char iv[32];
} boot_symmetric_key_info;

typedef struct {
	unsigned int update_status;
	unsigned int bl_error_code;
} boot_ssd_status;

#if PLATFORM_MSM7X30

typedef struct {
	boot_symmetric_key_info key_info;
	uint32_t boot_flags;
	uint32_t boot_key_press[5];
	uint32_t time_tick;
	boot_ssd_status status;
	uint8_t buff_align[4];
} boot_info_for_apps;

#elif PLATFORM_MSM7K

typedef struct {
	uint32_t apps_img_start_addr;
	uint32_t boot_flags;
	boot_ssd_status status;
} boot_info_for_apps;

#elif PLATFORM_MSM7X27A

typedef struct {
	uint32_t apps_img_start_addr;
	uint32_t boot_flags;
	boot_ssd_status status;
	boot_symmetric_key_info key_info;
	uint16_t boot_key_press[10];
	uint32_t timetick;
	uint8_t PAD[28];
} boot_info_for_apps;

#else

/* Dummy structure to keep it for other targets */
typedef struct {
	uint32_t boot_flags;
	boot_ssd_status status;
} boot_info_for_apps;

#endif

/* chip information */
enum {
	UNKNOWN = 0,
	MDM9200 = 57,
	MDM9600 = 58,
	MSM8260 = 70,
	MSM8660 = 71,
	APQ8060 = 86,
	MSM8960 = 87,
	MSM7225A = 88,
	MSM7625A = 89,
	MSM7227A = 90,
	MSM7627A = 91,
	ESM7227A = 92,
	ESM7225A = 96,
	ESM7627A = 97,
	MSM7225AA = 98,
	MSM7625AA = 99,
	ESM7225AA = 100,
	MSM7227AA = 101,
	MSM7627AA = 102,
	ESM7227AA = 103,
	APQ8064 = 109,
	MSM8930 = 116,
	MSM8630 = 117,
	MSM8230 = 118,
	APQ8030 = 119,
	MSM8627 = 120,
	MSM8227 = 121,
	MSM8660A = 122,
	MSM8260A = 123,
	APQ8060A = 124,
	MSM8974 = 126,
	MSM8225 = 127,
	MSM8625 = 129,
	MPQ8064 = 130,
	MSM7225AB = 131,
	MSM7625AB = 132,
	ESM7225AB = 133,
	MDM9625   = 134,
	MSM7125A  = 135,
	MSM7127A  = 136,
	MSM8125A  = 137,
	MSM8960AB = 138,
	APQ8060AB = 139,
	MSM8260AB = 140,
	MSM8660AB = 141,
	MSM8930AA = 142,
	MSM8630AA = 143,
	MSM8230AA = 144,
	MSM8626   = 145,
	MSM8610   = 147,
	MDM9225   = 149,
	MDM9225M  = 150,
	MDM9625M  = 152,
	APQ8064AB = 153, /* aka V2 PRIME */
	MSM8930AB = 154,
	MSM8630AB = 155,
	MSM8230AB = 156,
	APQ8030AB = 157,
	MSM8226   = 158,
	MSM8826   = 159,
	APQ8030AA = 160,
	MSM8110   = 161,
	MSM8210   = 162,
	MSM8810   = 163,
	MSM8212   = 164,
	MSM8612   = 165,
	MSM8812   = 166,
	MSM8125   = 167,
	MDM9310   = 171,
	APQ8064AA = 172, /* aka V2 SLOW_PRIME */
	APQ8084   = 178,
	MSM8130   = 179,
	MSM8130AA = 180,
	MSM8130AB = 181,
	MSM8627AA = 182,
	MSM8227AA = 183,
	APQ8074   = 184,
	MSM8274   = 185,
	MSM8674   = 186,
	MDM9635   = 187,
	FSM9900   = 188,
	FSM9905   = 189,
	FSM9955   = 190,
	FSM9950   = 191,
	FSM9915   = 192,
	FSM9910   = 193,
	MSM8974AC = 194,
	MSM8126   = 198,
	APQ8026   = 199,
	MSM8926   = 200,
	MSM8326   = 205,
	MSM8916   = 206,
	MSM8994   = 207,
	APQ8074AA  = 208,
	APQ8074AB  = 209,
	APQ8074AC  = 210,
	MSM8274AA  = 211,
	MSM8274AB  = 212,
	MSM8274AC  = 213,
	MSM8674AA  = 214,
	MSM8674AB  = 215,
	MSM8674AC  = 216,
	MSM8974AA  = 217,
	MSM8974AB  = 218,
	APQ8028  = 219,
	MSM8128  = 220,
	MSM8228  = 221,
	MSM8528  = 222,
	MSM8628  = 223,
	MSM8928  = 224,
	MSM8510  = 225,
	MSM8512  = 226,
	MSM8936  = 233,
	MDM9640  = 234,
	MSM8939  = 239,
	APQ8036  = 240,
	APQ8039  = 241,
	MSM8236  = 242,
	MSM8636  = 243,
	MSM8909  = 245,
	MSM8996  = 246,
	APQ8016  = 247,
	MSM8216  = 248,
	MSM8116  = 249,
	MSM8616  = 250,
	MSM8992  = 251,
	APQ8092  = 252,
	APQ8094  = 253,
	FSM9008  = 254,
	FSM9010  = 255,
	FSM9016  = 256,
	FSM9055  = 257,
	MSM8209  = 258,
	MSM8208  = 259,
	MDM9209  = 260,
	MDM9309  = 261,
	MDM9609  = 262,
	MSM8239  = 263,
	APQ8009  = 265,
	MSM8952  = 264,
	MSM8956  = 266,
	MSM8929  = 268,
	MSM8629  = 269,
	MSM8229  = 270,
	APQ8029  = 271,
	APQ8056  = 274,
	MSM8609  = 275,
	FSM9916  = 276,
	APQ8076  = 277,
	MSM8976  = 278,
	MDM9650  = 279,
	MDM9655  = 283,
	MDM9250  = 284,
	MDM9255  = 285,
	MDM9350  = 286,
	APQ8052  = 289,
	MDM9607 = 290,
	MDM8207  = 296,
	MDM9207  = 297,
	MDM9307  = 298,
	MDM9628  = 299,
	APQ8096  = 291,
	MSM8953  = 293,
	MSM8937 = 294,
	APQ8037 = 295,
	MSM8940 = 313,
	MSM8996L = 302,
	MSM8917  = 303,
	MSM8920  = 320,
	APQ8053 = 304,
	MSM8996SG = 305,
	APQ8017 = 307,
	MSM8217 = 308,
	MSM8617 = 309,
	MSM8996AU = 310,
	APQ8096AU = 311,
	APQ8096SG = 312,
	SDX201 = 314,
	SDX202 = 333,
	MSM8909W = 300,
	APQ8009W = 301,
	SDM450 = 338,
	MDM9206 = 322,
	SDA450 = 351,
	SDM632 = 349,
	SDA632 = 350,
	SDM429 = 354,
	SDM439 = 353,
	SDA429 = 364,
	SDA439 = 363,
	QM215 = 386
};

enum platform {
	HW_PLATFORM_UNKNOWN = 0,
	HW_PLATFORM_SURF = 1,
	HW_PLATFORM_FFA = 2,
	HW_PLATFORM_FLUID = 3,
	HW_PLATFORM_SVLTE = 4,
	HW_PLATFORM_QT = 6,
	HW_PLATFORM_MTP_MDM = 7,
	HW_PLATFORM_MTP = 8,
	HW_PLATFORM_LIQUID = 9,
	HW_PLATFORM_DRAGON = 10,
	HW_PLATFORM_QRD = 11,
	HW_PLATFORM_IPC = 12,
	HW_PLATFORM_HRD = 13,
	HW_PLATFORM_DTV = 14,
	HW_PLATFORM_RUMI   = 15,
	HW_PLATFORM_VIRTIO = 16,
	HW_PLATFORM_BTS = 19,
	HW_PLATFORM_RCM = 21,
	HW_PLATFORM_DMA = 22,
	HW_PLATFORM_STP = 23,
	HW_PLATFORM_SBC = 24,
	HW_PLATFORM_ADP = 25,
	HW_PLATFORM_ATP = 33,
	HW_PLATFORM_32BITS = 0x7FFFFFFF,
};

enum platform_subtype {
	HW_PLATFORM_SUBTYPE_UNKNOWN = 0,
	HW_PLATFORM_SUBTYPE_MDM = 1,
	HW_PLATFORM_SUBTYPE_8974PRO_PM8084 = 1,
	HW_PLATFORM_SUBTYPE_CSFB = 1,
	HW_PLATFORM_SUBTYPE_SVLTE1 = 2,
	HW_PLATFORM_SUBTYPE_IOT = 2,
	HW_PLATFORM_SUBTYPE_SAP = 2,
	HW_PLATFORM_SUBTYPE_SAP_NOPMI = 3,
	HW_PLATFORM_SUBTYPE_SVLTE2A = 3,
	HW_PLATFORM_SUBTYPE_MTP_WEAR = 5,
	HW_PLATFORM_SUBTYPE_SGLTE = 6,
	HW_PLATFORM_SUBTYPE_DSDA = 7,
	HW_PLATFORM_SUBTYPE_DSDA2 = 8,
	HW_PLATFORM_SUBTYPE_SGLTE2 = 9,
	HW_PLATFORM_SUBTYPE_SWOC_TP_CIRC = 12,
	HW_PLATFORM_SUBTYPE_POLARIS = 64,
	HW_PLATFORM_SUBTYPE_SWOC_WEAR = 9,
	HW_PLATFORM_SUBTYPE_SWOC_NOWGR_CIRC = 13,
	HW_PLATFORM_SUBTYPE_8909_PM8916 = 2,
	HW_PLATFORM_SUBTYPE_8909_PM660 = 15,
	HW_PLATFORM_SUBTYPE_8909_COMPAL_ALPHA = 19,
	HW_PLATFORM_SUBTYPE_8909_PM660_V1 = 18,
	HW_PLATFORM_SUBTYPE_INTRINSIC_SOM = 20,
	HW_PLATFORM_SUBTYPE_32BITS = 0x7FFFFFFF
};

typedef enum {
	SMEM_SPINLOCK_ARRAY = 7,
	SMEM_AARM_PARTITION_TABLE = 9,
	SMEM_CHANNEL_ALLOC_TBL = 13,
	SMEM_SMD_BASE_ID = 14,

	SMEM_APPS_BOOT_MODE = 106,

	SMEM_BOARD_INFO_LOCATION = 137,

	SMEM_SMD_FIFO_BASE_ID = 338,

	SMEM_USABLE_RAM_PARTITION_TABLE = 402,

	SMEM_POWER_ON_STATUS_INFO = 403,

	SMEM_RLOCK_AREA = 404,

	SMEM_BOOT_INFO_FOR_APPS = 418,

	SMEM_FIRST_VALID_TYPE = SMEM_SPINLOCK_ARRAY,
	SMEM_LAST_VALID_TYPE = SMEM_BOOT_INFO_FOR_APPS,

	SMEM_MAX_SIZE = SMEM_BOOT_INFO_FOR_APPS + 1,
} smem_mem_type_t;

/* Note: buf MUST be 4byte aligned, and max_len MUST be a multiple of 4. */
unsigned smem_read_alloc_entry(smem_mem_type_t type, void *buf, int max_len);

/* SMEM RAM Partition */
enum {
	DEFAULT_ATTRB = ~0x0,
	READ_ONLY = 0x0,
	READWRITE,
};

enum {
	DEFAULT_CATEGORY = ~0x0,
	SMI = 0x0,
	EBI1,
	EBI2,
	QDSP6,
	IRAM,
	IMEM,
	EBI0_CS0,
	EBI0_CS1,
	EBI1_CS0,
	EBI1_CS1,
	SDRAM = 0xE,
};

enum {
	DEFAULT_DOMAIN = 0x0,
	APPS_DOMAIN,
	MODEM_DOMAIN,
	SHARED_DOMAIN,
};

enum {
	SYS_MEMORY = 1,		/* system memory */
	BOOT_REGION_MEMORY1,	/* boot loader memory 1 */
	BOOT_REGION_MEMORY2,	/* boot loader memory 2,reserved */
	APPSBL_MEMORY,		/* apps boot loader memory */
	APPS_MEMORY,		/* apps  usage memory */
};

struct smem {
	struct smem_proc_comm proc_comm[4];
	unsigned version_info[32];
	struct smem_heap_info heap_info;
	struct smem_alloc_info alloc_info[SMEM_MAX_SIZE];
};

struct smem_ram_ptn {
	char name[16];
	uint32_t start;
	uint32_t size;
	uint32_t attr;          /* RAM Partition attribute: READ_ONLY, READWRITE etc.*/
	uint32_t category;      /* RAM Partition category: EBI0, EBI1, IRAM, IMEM */
	uint32_t domain;        /* RAM Partition domain: APPS, MODEM, APPS & MODEM (SHARED) etc. */
	uint32_t type;          /* RAM Partition type: system, bootloader, appsboot, apps etc. */
	uint32_t num_partitions;/* Number of memory partitions */
	uint32_t reserved3;
	uint32_t reserved4;
	uint32_t reserved5;
} __attribute__ ((__packed__));

struct smem_ram_ptn_v1 {
	char name[RAM_PART_NAME_LENGTH];
	uint64_t start;
	uint64_t size;
	uint32_t attr;          /* RAM Partition attribute: READ_ONLY, READWRITE etc.*/
	uint32_t category;      /* RAM Partition category: EBI0, EBI1, IRAM, IMEM */
	uint32_t domain;        /* RAM Partition domain: APPS, MODEM, APPS & MODEM (SHARED) etc. */
	uint32_t type;          /* RAM Partition type: system, bootloader, appsboot, apps etc. */
	uint32_t num_partitions;/* Number of memory partitions */
	uint32_t reserved3;
	uint32_t reserved4;     /* Reserved for future use */
	uint32_t reserved5;     /* Reserved for future use */
} __attribute__ ((__packed__));

struct smem_ram_ptn_v2 {
	char name[RAM_PART_NAME_LENGTH];
	uint64_t start;
	uint64_t size;
	uint32_t attr;          /* RAM Partition attribute: READ_ONLY, READWRITE etc.*/
	uint32_t category;      /* RAM Partition category: EBI0, EBI1, IRAM, IMEM */
	uint32_t domain;        /* RAM Partition domain: APPS, MODEM, APPS & MODEM (SHARED) etc. */
	uint32_t type;          /* RAM Partition type: system, bootloader, appsboot, apps etc. */
	uint32_t num_partitions;/* Number of memory partitions */
	uint32_t hw_info;       /* hw information such as type and frequency */
	uint64_t reserved;      /* Reserved for future use */
	uint64_t available_length; /* Available partition length in RAM in bytes */
} __attribute__ ((__packed__));

struct smem_ram_ptable {
	unsigned magic[2];
	unsigned version;
	unsigned reserved1;
	unsigned len;
	struct smem_ram_ptn parts[32];
	unsigned buf;
} __attribute__ ((__packed__));

struct smem_ram_ptable_hdr
{
	uint32_t magic[2];
	uint32_t version;
	uint32_t reserved1;
	uint32_t len;
} __attribute__ ((__packed__));

struct smem_ram_ptable_v1 {
	struct smem_ram_ptable_hdr hdr;
	uint32_t reserved2;     /* Added for 8 bytes alignment of header */
	struct smem_ram_ptn_v1 parts[RAM_NUM_PART_ENTRIES];
} __attribute__ ((__packed__));

struct smem_ram_ptable_v2 {
	struct smem_ram_ptable_hdr hdr;
	uint32_t reserved2;     /* Added for 8 bytes alignment of header */
	struct smem_ram_ptn_v2 parts[RAM_NUM_PART_ENTRIES];
} __attribute__ ((__packed__));

/* Power on reason/status info */
#define PWR_ON_EVENT_RTC_ALARM 0x2
#define PWR_ON_EVENT_USB_CHG   0x20
#define PWR_ON_EVENT_WALL_CHG  0x40

#define SMEM_PTABLE_MAX_PARTS_V3  16
#define SMEM_PTABLE_MAX_PARTS_V4  32
#define SMEM_PTABLE_MAX_PARTS     SMEM_PTABLE_MAX_PARTS_V4

#define SMEM_PTABLE_HDR_LEN    (4*sizeof(unsigned))

struct smem_ptn {
	char name[16];
	unsigned start;
	unsigned size;
	unsigned attr;
} __attribute__ ((__packed__));


struct smem_ptable {
#define _SMEM_PTABLE_MAGIC_1 0x55ee73aa
#define _SMEM_PTABLE_MAGIC_2 0xe35ebddb
	unsigned magic[2];
	unsigned version;
	unsigned len;
	struct smem_ptn parts[SMEM_PTABLE_MAX_PARTS];
} __attribute__ ((__packed__));

typedef struct smem_ram_ptable_v2 ram_partition_table;
typedef struct smem_ram_ptn_v2 ram_partition;

unsigned smem_read_alloc_entry_offset(smem_mem_type_t type, void *buf, int len, int offset);
int smem_ram_ptable_init(struct smem_ram_ptable *smem_ram_ptable);
int smem_ram_ptable_init_v1(); /* Used on platforms that use ram ptable v1 */
void smem_get_ram_ptable_entry(ram_partition*, uint32_t entry);
uint32_t smem_get_ram_ptable_version(void);
uint32_t smem_get_ram_ptable_len(void);
void* smem_get_alloc_entry(smem_mem_type_t type, uint32_t* size);
uint32_t get_ddr_start();
uint64_t smem_get_ddr_size();
size_t smem_get_hw_platform_name(void *buf, uint32 buf_size);
#endif				/* __PLATFORM_MSM_SHARED_SMEM_H */