upstream/linux-5.10/kernel/ramdump/ramdump_client_cap.c

/*******************************************************************************
* °æȨËùÓÐ (C)2016, ÖÐÐËͨѶ¹É·ÝÓÐÏÞ¹«Ë¾¡£
* 
* ÎļþÃû³Æ:     ramdump_client_cap.c
* Îļþ±êʶ:     ramdump_client_cap.c
* ÄÚÈÝÕªÒª:     ramdump cap¿Í»§¶ËÒì³£ËÀ»úÏÖ³¡Êý¾Ýµ¼³öʵÏÖ
* 
* ÐÞ¸ÄÈÕÆÚ        °æ±¾ºÅ      Ð޸ıê¼Ç        ÐÞ¸ÄÈË          ÐÞ¸ÄÄÚÈÝ
* ------------------------------------------------------------------------------
* 2019/10/10      V1.0        Create          00130574         ´´½¨
* 
*******************************************************************************/

/*******************************************************************************
*                                   Í·Îļþ                                     *
*******************************************************************************/
#include "ramdump.h"
#include "ramdump_arch.h"
#include <linux/module.h>
#include <linux/soc/zte/rpmsg.h>
#include "ram_config.h"

#ifdef __cplusplus
extern "C" {
#endif

/*******************************************************************************
*                                  ³£Á¿¶¨Òå                                    *
*******************************************************************************/

/*******************************************************************************
*                                   ºê¶¨Òå                                     *
*******************************************************************************/

/*******************************************************************************
*                                Êý¾ÝÀàÐͶ¨Òå                                  *
*******************************************************************************/

/*******************************************************************************
*                                º¯ÊýÉùÃ÷                                  *
*******************************************************************************/
extern void ramdump_register_callbacks(void);
extern unsigned char *ramdump_phy_to_vir(unsigned long phy, unsigned long size);
extern void ramdump_shared_mem_init(void);
extern void ramdump_data_transfer_to_device(void);
extern void ramdump_oss_data_trans_init(void);
extern unsigned char *ramdump_export_flag_base;
extern void zxic_reset_reason(int reason, const char *cpu, const char *app);

/*******************************************************************************
*                              ¾Ö²¿¾²Ì¬±äÁ¿¶¨Òå                                *
*******************************************************************************/
#define RAMDUMP_ON_DEFAULT_VAL  (1)

/*******************************************************************************
*                                È«¾Ö±äÁ¿¶¨Òå                                  *
*******************************************************************************/
/*
 * run time control dump or not, use ( echo "0" > ramdump_on ) to close ramdump
 */
int sysctl_ramdump_on_panic = RAMDUMP_ON_DEFAULT_VAL;
int ramdump_cap_init_flag = -1;
int ramdump_count = 0;
int ramdump_server_exp_core = RAMDUMP_FALSE;
#ifdef CONFIG_RAMDUMP_USER
unsigned int sysctl_ramdump_on_user = 1;
#endif
unsigned int ramdump_export_mode = 0xFF;
/* Cmm file content */
unsigned char *ramdump_cap_cmm_buf = NULL;
/* err log file */
unsigned char *ramdump_cap_error_log  = NULL;
unsigned int *cap_ddr_len_base        = NULL;
unsigned int   sysctl_ramdump_emmc_size = 0x0;
u64 sysctl_ramdump_emmc_start_addr = 0xFFFF;

static struct ctl_table cfg_ramdump_array[] = {
#ifdef CONFIG_RAMDUMP_USER
	{
		.procname	= "sysctl_ramdump_on_user",
		.data		= &sysctl_ramdump_on_user,
		.maxlen		= sizeof(sysctl_ramdump_on_user),
		.mode		= 0644,
		.proc_handler	= proc_dointvec_minmax,
		.extra1		= SYSCTL_ZERO,
		.extra2		= SYSCTL_ONE,
	},
#endif
	{
		  .procname   = "ramdump_start_addr",
		  .data 	  = &sysctl_ramdump_emmc_start_addr,
		  .maxlen	  = sizeof(u64),
		  .mode 	  = 0644,
		  .proc_handler  = proc_dointvec_minmax,
	  },
	  {
		  .procname   = "ramdump_emmc_size",
		  .data 	  = &sysctl_ramdump_emmc_size,
		  .maxlen	  = sizeof(u64),
		  .mode 	  = 0644,
		  .proc_handler  = proc_doulongvec_minmax,
	  },

    { }
};

static struct ctl_table sysctl_ramdump_table[] = {
    {
        .procname   = "ramdump_ap",
        .mode       = 0555,
        .child      = cfg_ramdump_array,
    },
    { }
};

/*******************************************************************************
*                                ¾Ö²¿º¯ÊýʵÏÖ                                  *
*******************************************************************************/
/*******************************************************************************
* ¹¦ÄÜÃèÊö:     ramdump_cap_icp_handle
* ²ÎÊý˵Ã÷:     
*   (´«Èë²ÎÊý)  buf: icp msg addr
*               len: icp msg len
*   (´«³ö²ÎÊý)  void
* ·µ »Ø Öµ:     void
* ÆäËü˵Ã÷:     This function is used for ramdump client icp msg handle, common entry
*******************************************************************************/
static void ramdump_cap_icp_handle(void *buf, unsigned int len)
{
	ramdump_msg_t *icp_msg = (ramdump_msg_t *)buf;

	ramdump_server_exp_core = RAMDUMP_TRUE;

	switch(icp_msg->msg_id)
	{
		case RAMDUMP_MSG_EXCEPT:
		{
			ramdump_panic("trans server received forced dump request from Ap server!\n");
			break;
		}

		default:
		{
			ramdump_panic("trans server received forced dump request from Ap server!\n");
			break;
		}
	}
}

/*******************************************************************************
* ¹¦ÄÜÃèÊö:    ramdump_oss_icp_create_channel
* ²ÎÊý˵Ã÷:     
*   (´«Èë²ÎÊý) actorID: icp send core id
               chID:    icp channel id
               size:    icp channel size
*   (´«³ö²ÎÊý) void 
* ·µ »Ø Öµ:    int: if msg send success 
* ÆäËü˵Ã÷:    
*******************************************************************************/
static int ramdump_cap_icp_create_channel(T_RpMsg_CoreID dstCoreID, T_RpMsg_ChID chID, unsigned int size)
{
	return rpmsgCreateChannel(dstCoreID, chID, size);
}

/*******************************************************************************
* ¹¦ÄÜÃèÊö:    ramdump_oss_icp_regcallback
* ²ÎÊý˵Ã÷:     
*   (´«Èë²ÎÊý) actorID: icp send core id
               chID:    icp channel id
               callback:icp callback fun
*   (´«³ö²ÎÊý) void 
* ·µ »Ø Öµ:    int: if msg send success 
* ÆäËü˵Ã÷:    
*******************************************************************************/
static int ramdump_cap_icp_regcallback (T_RpMsg_CoreID coreID, unsigned int chID, T_RpMsg_Callback callback)
{
	return rpmsgRegCallBack(coreID, chID, callback);
}

/*******************************************************************************
* ¹¦ÄÜÃèÊö:    ramdump_init_sysctl_table
* ²ÎÊý˵Ã÷:     
*   (´«Èë²ÎÊý) void
*   (´«³ö²ÎÊý) void 
* ·µ »Ø Öµ:    void 
* ÆäËü˵Ã÷:    ×¢²ásysctlÃüÁÓû§Ì¬Ê¹ÓÃsysctl¿ØÖÆramdump´æ´¢µØÖ·
*******************************************************************************/
void ramdump_init_sysctl_table(void)
{
	register_sysctl_table(sysctl_ramdump_table);
}

/*******************************************************************************
* ¹¦ÄÜÃèÊö:     ramdump_cap_icp_init
* ²ÎÊý˵Ã÷:     
*   (´«Èë²ÎÊý)  void
*   (´«³ö²ÎÊý)  void
* ·µ »Ø Öµ:     void
* ÆäËü˵Ã÷:     This function is used for ramdump client icp init
*******************************************************************************/
static int ramdump_cap_icp_init(void)
{
	int ret = 0;

	ret = ramdump_cap_icp_create_channel(
			RAMDUMP_SERVER_AP, 
			RAMDUMP_CHANNEL, 
			RAMDUMP_CHANNEL_SIZE);

	if (ret != RAMDUMP_SUCCESS)
	{
		return ret;
	}
	ret = ramdump_cap_icp_regcallback(
			RAMDUMP_SERVER_AP,
			RAMDUMP_CHANNEL, 
			ramdump_cap_icp_handle);

	if (ret != RAMDUMP_SUCCESS)
	{
		return ret;
	}
	return RAMDUMP_SUCCESS;
}

/*******************************************************************************
* ¹¦ÄÜÃèÊö:     ramdump_notify_server_panic
* ²ÎÊý˵Ã÷:     
*   (´«Èë²ÎÊý)  void
*   (´«³ö²ÎÊý)  void
* ·µ »Ø Öµ:     void
* ÆäËü˵Ã÷:     This function is used for cap notify ramdump server to panic
*******************************************************************************/
static int ramdump_notify_server_panic(void)
{
	int ret = 0;
	T_RpMsg_Msg rpMsg = {0};
	ramdump_msg_t ramdumpMsg = {0};
	
	ramdumpMsg.msg_id = RAMDUMP_MSG_EXCEPT;
	ramdumpMsg.cpu_id = CORE_AP;

	rpMsg.coreID = RAMDUMP_SERVER_AP;
	rpMsg.chID = RAMDUMP_CHANNEL;
	rpMsg.flag = RPMSG_WRITE_INT | RPMSG_WRITE_IRQLOCK;
	rpMsg.len = sizeof(ramdump_msg_t);
	rpMsg.buf = &ramdumpMsg;

	ret = rpmsgWrite(&rpMsg);
	return ret;
}

/*******************************************************************************
* ¹¦ÄÜÃèÊö:    ramdump_cap_store_ram_conf
* ²ÎÊý˵Ã÷:     
*   (´«Èë²ÎÊý) mem: addr
*   (´«³ö²ÎÊý) void 
* ·µ »Ø Öµ:    unsigend char*: changed addr
* ÆäËü˵Ã÷:    This function is used to store ram conf
*******************************************************************************/
static unsigned char *ramdump_cap_store_ram_conf(unsigned char *mem)
{
	mem += sprintf(
			mem, 
			"data.load.binary &ramdump_dir\\%s A:0x%x--A:0x%x /noclear\n",
			"cap_ddr.bin",
			(unsigned int)DDR_BASE_CAP_ADDR_PA, 
			(unsigned int)(DDR_BASE_CAP_ADDR_PA + *cap_ddr_len_base  - 1));
	mem += sprintf(
			mem, 
			"data.load.binary &ramdump_dir\\%s A:0x%x--A:0x%x /noclear\n",
			"cap.cmm",
			(unsigned int)RAMDUMP_CAP_CMM_BUF_ADDR, 
			(unsigned int)(RAMDUMP_CAP_CMM_BUF_ADDR + RAMDUMP_CAP_CMM_BUF_LEN_REAL - 1));
	mem += sprintf(
			mem, 
			"data.load.binary &ramdump_dir\\%s A:0x%x--A:0x%x /noclear\n",
			"cap_err_log.txt",
			(unsigned int)RAMDUMP_CAP_LOG_BUF_ADDR, 
			(unsigned int)(RAMDUMP_CAP_LOG_BUF_ADDR + RAMDUMP_CAP_LOG_BUF_LEN - 1));
	return mem;
}
/*******************************************************************************
* ¹¦ÄÜÃèÊö:    ramdump_cap_cmm_create
* ²ÎÊý˵Ã÷:     
*   (´«Èë²ÎÊý) void
*   (´«³ö²ÎÊý) void
* ·µ »Ø Öµ:    void
* ÆäËü˵Ã÷:    This function is used for server to generate cmm scripts
*******************************************************************************/
static void ramdump_cap_cmm_create(void)
{
	unsigned char *pcmm_buf = ramdump_cap_cmm_buf;

	memset(ramdump_cap_cmm_buf, 0, RAMDUMP_CAP_CMM_BUF_LEN_REAL);

	// store the cmm BEGIN
	pcmm_buf += sprintf(pcmm_buf, "ENTRY &ramdump_dir\n");

	// store procmodes regs
	pcmm_buf = ramdump_arch_store_modes_regs(pcmm_buf);

	// store ram config 
	pcmm_buf = ramdump_cap_store_ram_conf(pcmm_buf);

	// store memory map control regs
	pcmm_buf = ramdump_arch_store_mm_regs(pcmm_buf);

	// store end symbol
	pcmm_buf += sprintf(pcmm_buf, "ENDDO\n");

}

/*******************************************************************************
* ¹¦ÄÜÃèÊö:    ramdump_trans_cap_error_log_create
* ²ÎÊý˵Ã÷:     
*   (´«Èë²ÎÊý) void
*   (´«³ö²ÎÊý) void
* ·µ »Ø Öµ:    void
* ÆäËü˵Ã÷:    This function is used to create err log file
*******************************************************************************/
static void ramdump_cap_error_log_create(void)
{
	unsigned char *buf = ramdump_cap_error_log;

	memset(ramdump_cap_error_log, 0, RAMDUMP_CAP_LOG_BUF_LEN);
	buf +=	sprintf(buf, "dump at core%d,", smp_processor_id());
	if (current->mm != NULL)
		buf += sprintf(buf, "in user,task is: %s\n", current->comm);
	else
		buf += sprintf(buf, "in kernel,task is: %s\n", current->comm);

	if (ramdump_server_exp_core)
		buf += sprintf(buf, "recv dumpinfo from ap\n");
}

/*******************************************************************************
*                                È«¾Öº¯ÊýʵÏÖ                                  *
*******************************************************************************/
/*******************************************************************************
* ¹¦ÄÜÃèÊö:     ramdump_ram_conf_table_add
* ²ÎÊý˵Ã÷:     
*   (´«Èë²ÎÊý)  ram_name:    dump ram name
                ram_start:   dump ram start(virtual addr)
                ram_size:    dump ram size
                ram_virt:    dump ram virt addr
                ram_flag:    dump ram flag(copy/exter/callback)
                ram_extra:   dump ram extra access addr
*   (´«³ö²ÎÊý)  void
* ·µ »Ø Öµ:     void
* ÆäËü˵Ã÷:     This function is used to add dump ram conf into public table
*******************************************************************************/
void ramdump_ram_conf_table_add(
		char *ram_name, 
		unsigned long ram_phy, 
		unsigned long ram_size, 
		unsigned long ram_virt,
		unsigned long ram_flag,
		unsigned long ram_extra)
{
}
void ramdump_init_cmm_buf(void)
{
	/* Cmm file content */
	ramdump_cap_cmm_buf = ramdump_phy_to_vir((unsigned long)RAMDUMP_CAP_CMM_BUF_ADDR, RAMDUMP_CAP_CMM_BUF_LEN_REAL);
	/* err log file */
	ramdump_cap_error_log = ramdump_phy_to_vir((unsigned long)RAMDUMP_CAP_LOG_BUF_ADDR, RAMDUMP_CAP_LOG_BUF_LEN);
	cap_ddr_len_base = (unsigned int *)ramdump_phy_to_vir((unsigned long)IRAM_BASE_ADDR_BOOT_DDR, sizeof(unsigned long));
}

/*******************************************************************************
* ¹¦ÄÜÃèÊö:     ramdump_init
* ²ÎÊý˵Ã÷:     
*   (´«Èë²ÎÊý)  void
*   (´«³ö²ÎÊý)  void
* ·µ »Ø Öµ:     RAMDUMP_SUCCESS or RAMDUMP_FAILED
* ÆäËü˵Ã÷:     This function is used for ramdump init
*******************************************************************************/
int __init ramdump_init(void)
{
	int ret = 0;
	ramdump_printf("Ramdump cap init start!!!!!\n");

	if (ramdump_cap_init_flag == RAMDUMP_TRUE)
		return RAMDUMP_SUCCESS;
	ramdump_printf("Ramdump cap init rpmsg start!!!!!\n");
	ret = ramdump_cap_icp_init();
	if (ret != RAMDUMP_ICP_SUCCESS) 
		return ret;

	ramdump_register_callbacks();

	ramdump_init_cmm_buf();

	ramdump_init_sysctl_table();

	ramdump_shared_mem_init();
	ramdump_oss_data_trans_init();

	ramdump_printf("Ramdump cap init success!\n");
	ramdump_cap_init_flag = RAMDUMP_TRUE;

	return RAMDUMP_SUCCESS;
}

/*******************************************************************************
* ¹¦ÄÜÃèÊö:     ramdump_entry
* ²ÎÊý˵Ã÷:     
*   (´«Èë²ÎÊý)  void
*   (´«³ö²ÎÊý)  void
* ·µ »Ø Öµ:     void
* ÆäËü˵Ã÷:     This function is used for ramdump entry
*******************************************************************************/
void ramdump_entry (void)
{
	unsigned long flags;

	if (ramdump_server_exp_core == RAMDUMP_FALSE)
		zxic_reset_reason(1, "cap", current->comm); /* not ap ramdump and cap ramdump */
	if (sysctl_ramdump_on_panic == false)
		return;

	/*
	* we need lock the irq, this can`t be interrupt.
	*/
	ramdump_irq_lock(flags);

	if (!ramdump_cap_init_flag)
		while(true); /* endless circle */

	if (++ramdump_count > 1)
		while(true); /* endless circle */

	/*
	* save all regs first.
	*/
	ramdump_arch_save_all_regs();
	// generate error log 
	ramdump_cap_error_log_create();

	//Éú³Écmm½Å±¾µÄµ¼³öÅäÖÃ
	ramdump_cap_cmm_create();

	/* notify client ramdump */
	ramdump_notify_server_panic();

	ramdump_arch_clean_caches();
	ramdump_export_mode  = *(unsigned int *)ramdump_export_flag_base;

	if((ramdump_export_mode == RAMDUMP_MODE_EMMC)
		|| (ramdump_export_mode == RAMDUMP_MODE_SPINAND))
		ramdump_data_transfer_to_device();

	while(true)
		;
}

#ifdef __cplusplus
}
#endif