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#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/semaphore.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/xlog.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#define MET_USER_EVENT_SUPPORT
//#include <linux/met_drv.h>
#include "mach/mt_reg_base.h"
#include "mach/emi_bwl.h"
#include "mach/sync_write.h"
void __iomem *DRAMC_BASE_ADDR = NULL;
extern void __iomem *EMI_BASE_ADDR;
DEFINE_SEMAPHORE(emi_bwl_sem);
static struct platform_driver mem_bw_ctrl = {
.driver = {
.name = "mem_bw_ctrl",
.owner = THIS_MODULE,
},
};
static struct platform_driver ddr_type = {
.driver = {
.name = "ddr_type",
.owner = THIS_MODULE,
},
};
/* define EMI bandwiwth limiter control table */
static struct emi_bwl_ctrl ctrl_tbl[NR_CON_SCE];
/* current concurrency scenario */
static int cur_con_sce = 0x0FFFFFFF;
#if defined(CONFIG_ARCH_MT6735)
/* define concurrency scenario strings */
static const char *con_sce_str[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) #con_sce,
#include "mach/con_sce_lpddr3_1600_D1.h"
#undef X_CON_SCE
};
/****************** For LPDDR2-1066******************/
static const unsigned int emi_arba_lpddr2_1066_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arba,
#include "mach/con_sce_lpddr2_1066_D1.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbb_lpddr2_1066_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbb,
#include "mach/con_sce_lpddr2_1066_D1.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbc_lpddr2_1066_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbc,
#include "mach/con_sce_lpddr2_1066_D1.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbd_lpddr2_1066_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbd,
#include "mach/con_sce_lpddr2_1066_D1.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbe_lpddr2_1066_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbe,
#include "mach/con_sce_lpddr2_1066_D1.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbf_lpddr2_1066_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbf,
#include "mach/con_sce_lpddr2_1066_D1.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbg2_lpddr2_1066_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbg2,
#include "mach/con_sce_lpddr2_1066_D1.h"
#undef X_CON_SCE
};
/****************** For LPDDR3-1600******************/
static const unsigned int emi_arba_lpddr3_1600_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arba,
#include "mach/con_sce_lpddr3_1600_D2.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbb_lpddr3_1600_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbb,
#include "mach/con_sce_lpddr3_1600_D2.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbc_lpddr3_1600_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbc,
#include "mach/con_sce_lpddr3_1600_D2.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbd_lpddr3_1600_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbd,
#include "mach/con_sce_lpddr3_1600_D2.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbe_lpddr3_1600_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbe,
#include "mach/con_sce_lpddr3_1600_D2.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbf_lpddr3_1600_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbf,
#include "mach/con_sce_lpddr3_1600_D2.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbg2_lpddr3_1600_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbg2,
#include "mach/con_sce_lpddr3_1600_D2.h"
#undef X_CON_SCE
};
#elif defined(CONFIG_ARCH_MT6735M)
/* define concurrency scenario strings */
static const char *con_sce_str[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) #con_sce,
#include "mach/con_sce_lpddr3_1600_D2.h"
#undef X_CON_SCE
};
/****************** For LPDDR2-1066******************/
static const unsigned int emi_arba_lpddr2_1066_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arba,
#include "mach/con_sce_lpddr2_1066_D2.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbb_lpddr2_1066_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbb,
#include "mach/con_sce_lpddr2_1066_D2.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbc_lpddr2_1066_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbc,
#include "mach/con_sce_lpddr2_1066_D2.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbd_lpddr2_1066_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbd,
#include "mach/con_sce_lpddr2_1066_D2.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbe_lpddr2_1066_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbe,
#include "mach/con_sce_lpddr2_1066_D2.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbf_lpddr2_1066_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbf,
#include "mach/con_sce_lpddr2_1066_D2.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbg2_lpddr2_1066_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbg2,
#include "mach/con_sce_lpddr2_1066_D2.h"
#undef X_CON_SCE
};
/****************** For LPDDR3-1600******************/
static const unsigned int emi_arba_lpddr3_1600_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arba,
#include "mach/con_sce_lpddr3_1600_D2.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbb_lpddr3_1600_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbb,
#include "mach/con_sce_lpddr3_1600_D2.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbc_lpddr3_1600_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbc,
#include "mach/con_sce_lpddr3_1600_D2.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbd_lpddr3_1600_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbd,
#include "mach/con_sce_lpddr3_1600_D2.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbe_lpddr3_1600_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbe,
#include "mach/con_sce_lpddr3_1600_D2.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbf_lpddr3_1600_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbf,
#include "mach/con_sce_lpddr3_1600_D2.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbg2_lpddr3_1600_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbg2,
#include "mach/con_sce_lpddr3_1600_D2.h"
#undef X_CON_SCE
};
#elif defined(CONFIG_ARCH_MT6753)
/* define concurrency scenario strings */
static const char *con_sce_str[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) #con_sce,
#include "mach/con_sce_lpddr3_1600_D3.h"
#undef X_CON_SCE
};
/****************** For LPDDR2-1066******************/
static const unsigned int emi_arba_lpddr2_1066_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arba,
#include "mach/con_sce_lpddr2_1066_D3.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbb_lpddr2_1066_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbb,
#include "mach/con_sce_lpddr2_1066_D3.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbc_lpddr2_1066_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbc,
#include "mach/con_sce_lpddr2_1066_D3.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbd_lpddr2_1066_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbd,
#include "mach/con_sce_lpddr2_1066_D3.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbe_lpddr2_1066_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbe,
#include "mach/con_sce_lpddr2_1066_D3.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbf_lpddr2_1066_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbf,
#include "mach/con_sce_lpddr2_1066_D3.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbg2_lpddr2_1066_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbg2,
#include "mach/con_sce_lpddr2_1066_D3.h"
#undef X_CON_SCE
};
/****************** For LPDDR3-1600******************/
static const unsigned int emi_arba_lpddr3_1600_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arba,
#include "mach/con_sce_lpddr3_1600_D3.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbb_lpddr3_1600_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbb,
#include "mach/con_sce_lpddr3_1600_D3.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbc_lpddr3_1600_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbc,
#include "mach/con_sce_lpddr3_1600_D3.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbd_lpddr3_1600_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbd,
#include "mach/con_sce_lpddr3_1600_D3.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbe_lpddr3_1600_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbe,
#include "mach/con_sce_lpddr3_1600_D3.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbf_lpddr3_1600_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbf,
#include "mach/con_sce_lpddr3_1600_D3.h"
#undef X_CON_SCE
};
static const unsigned int emi_arbg2_lpddr3_1600_val[] =
{
#define X_CON_SCE(con_sce, arba, arbb, arbc, arbd, arbe, arbf, arbg2) arbg2,
#include "mach/con_sce_lpddr3_1600_D3.h"
#undef X_CON_SCE
};
#endif
int get_dram_type(void)
{
unsigned int value = readl(IOMEM(DRAMC_BASE_ADDR + DRAMC_ACTIM1));
if((value >> 28) & 0x1)
return LPDDR3_1600;
else
return LPDDR2_1066;
}
/*
* mtk_mem_bw_ctrl: set EMI bandwidth limiter for memory bandwidth control
* @sce: concurrency scenario ID
* @op: either ENABLE_CON_SCE or DISABLE_CON_SCE
* Return 0 for success; return negative values for failure.
*/
int mtk_mem_bw_ctrl(int sce, int op)
{
int i, highest;
if (sce >= NR_CON_SCE) {
return -1;
}
if (op != ENABLE_CON_SCE && op != DISABLE_CON_SCE) {
return -1;
}
if (in_interrupt()) {
return -1;
}
down(&emi_bwl_sem);
if (op == ENABLE_CON_SCE) {
ctrl_tbl[sce].ref_cnt++;
}
else if (op == DISABLE_CON_SCE) {
if (ctrl_tbl[sce].ref_cnt != 0) {
ctrl_tbl[sce].ref_cnt--;
}
}
/* find the scenario with the highest priority */
highest = -1;
for (i = 0; i < NR_CON_SCE; i++) {
if (ctrl_tbl[i].ref_cnt != 0) {
highest = i;
break;
}
}
if (highest == -1) {
highest = CON_SCE_NORMAL;
}
/* set new EMI bandwidth limiter value */
if (highest != cur_con_sce) {
if(get_dram_type() == LPDDR3_1600) {
writel(emi_arba_lpddr3_1600_val[highest], EMI_ARBA);
writel(emi_arbb_lpddr3_1600_val[highest], EMI_ARBB);
writel(emi_arbc_lpddr3_1600_val[highest], EMI_ARBC);
writel(emi_arbd_lpddr3_1600_val[highest], EMI_ARBD);
writel(emi_arbe_lpddr3_1600_val[highest], EMI_ARBE);
writel(emi_arbf_lpddr3_1600_val[highest], EMI_ARBF);
mt_reg_sync_writel(emi_arbg2_lpddr3_1600_val[highest], EMI_ARBG_2ND);
} else if(get_dram_type() == LPDDR2_1066) {
writel(emi_arba_lpddr2_1066_val[highest], EMI_ARBA);
writel(emi_arbb_lpddr2_1066_val[highest], EMI_ARBB);
writel(emi_arbc_lpddr2_1066_val[highest], EMI_ARBC);
writel(emi_arbd_lpddr2_1066_val[highest], EMI_ARBD);
writel(emi_arbe_lpddr2_1066_val[highest], EMI_ARBE);
writel(emi_arbf_lpddr2_1066_val[highest], EMI_ARBF);
mt_reg_sync_writel(emi_arbg2_lpddr2_1066_val[highest], EMI_ARBG_2ND);
}
cur_con_sce = highest;
}
up(&emi_bwl_sem);
//met_show_bw_limiter();
return 0;
}
/*
* ddr_type_show: sysfs ddr_type file show function.
* @driver:
* @buf: the string of ddr type
* Return the number of read bytes.
*/
static ssize_t ddr_type_show(struct device_driver *driver, char *buf)
{
if(get_dram_type() == LPDDR3_1600) {
sprintf(buf, "LPDDR3_1600\n");
} else if(get_dram_type() == LPDDR2_1066) {
sprintf(buf, "LPDDR2_1066\n");
}
return strlen(buf);
}
/*
* ddr_type_store: sysfs ddr_type file store function.
* @driver:
* @buf:
* @count:
* Return the number of write bytes.
*/
static ssize_t ddr_type_store(struct device_driver *driver, const char *buf, size_t count)
{
/*do nothing*/
return count;
}
DRIVER_ATTR(ddr_type, 0644, ddr_type_show, ddr_type_store);
/*
* con_sce_show: sysfs con_sce file show function.
* @driver:
* @buf:
* Return the number of read bytes.
*/
static ssize_t con_sce_show(struct device_driver *driver, char *buf)
{
char *ptr = buf;
int i = 0;
if (cur_con_sce >= NR_CON_SCE) {
ptr += sprintf(ptr, "none\n");
} else {
ptr += sprintf(ptr, "current scenario: %s\n", con_sce_str[cur_con_sce]);
}
#if 1
ptr += sprintf(ptr, "%s\n", con_sce_str[cur_con_sce]);
ptr += sprintf(ptr, "EMI_ARBA = 0x%x \n", readl(IOMEM(EMI_ARBA)));
ptr += sprintf(ptr, "EMI_ARBB = 0x%x \n", readl(IOMEM(EMI_ARBB)));
ptr += sprintf(ptr, "EMI_ARBC = 0x%x \n", readl(IOMEM(EMI_ARBC)));
ptr += sprintf(ptr, "EMI_ARBD = 0x%x \n", readl(IOMEM(EMI_ARBD)));
ptr += sprintf(ptr, "EMI_ARBE = 0x%x \n", readl(IOMEM(EMI_ARBE)));
ptr += sprintf(ptr, "EMI_ARBF = 0x%x \n", readl(IOMEM(EMI_ARBF)));
ptr += sprintf(ptr, "EMI_ARBG = 0x%x \n", readl(IOMEM(EMI_ARBG_2ND)));
for (i = 0; i < NR_CON_SCE; i++){
ptr += sprintf(ptr, "%s = 0x%x \n", con_sce_str[i], ctrl_tbl[i].ref_cnt);
}
pr_notice("[EMI BWL] EMI_ARBA = 0x%x \n", readl(IOMEM(EMI_ARBA)));
pr_notice("[EMI BWL] EMI_ARBB = 0x%x \n", readl(IOMEM(EMI_ARBB)));
pr_notice("[EMI BWL] EMI_ARBC = 0x%x \n", readl(IOMEM(EMI_ARBC)));
pr_notice("[EMI BWL] EMI_ARBD = 0x%x \n", readl(IOMEM(EMI_ARBD)));
pr_notice("[EMI BWL] EMI_ARBE = 0x%x \n", readl(IOMEM(EMI_ARBE)));
pr_notice("[EMI BWL] EMI_ARBF = 0x%x \n", readl(IOMEM(EMI_ARBF)));
pr_notice("[EMI BWL] EMI_ARBG = 0x%x \n", readl(IOMEM(EMI_ARBG_2ND)));
#endif
return strlen(buf);
}
/*
* con_sce_store: sysfs con_sce file store function.
* @driver:
* @buf:
* @count:
* Return the number of write bytes.
*/
static ssize_t con_sce_store(struct device_driver *driver, const char *buf, size_t count)
{
int i;
for (i = 0; i < NR_CON_SCE; i++) {
if (!strncmp(buf, con_sce_str[i], strlen(con_sce_str[i]))) {
if (!strncmp(buf + strlen(con_sce_str[i]) + 1, EN_CON_SCE_STR, strlen(EN_CON_SCE_STR))) {
mtk_mem_bw_ctrl(i, ENABLE_CON_SCE);
printk("concurrency scenario %s ON\n", con_sce_str[i]);
break;
}
else if (!strncmp(buf + strlen(con_sce_str[i]) + 1, DIS_CON_SCE_STR, strlen(DIS_CON_SCE_STR))) {
mtk_mem_bw_ctrl(i, DISABLE_CON_SCE);
printk("concurrency scenario %s OFF\n", con_sce_str[i]);
break;
}
}
}
return count;
}
DRIVER_ATTR(concurrency_scenario, 0644, con_sce_show, con_sce_store);
/*
* emi_bwl_mod_init: module init function.
*/
static int __init emi_bwl_mod_init(void)
{
int ret;
struct device_node *node;
node = of_find_compatible_node(NULL, NULL, "mediatek,DRAMC0");
if(node) {
DRAMC_BASE_ADDR = of_iomap(node, 0);
printk("get DRAMC_BASE_ADDR @ %p\n", DRAMC_BASE_ADDR);
} else {
printk("can't find compatible node\n");
return -1;
}
ret = mtk_mem_bw_ctrl(CON_SCE_NORMAL, ENABLE_CON_SCE);
if (ret) {
xlog_printk(ANDROID_LOG_ERROR, "EMI/BWL", "fail to set EMI bandwidth limiter\n");
}
/* Register BW ctrl interface */
ret = platform_driver_register(&mem_bw_ctrl);
if (ret) {
xlog_printk(ANDROID_LOG_ERROR, "EMI/BWL", "fail to register EMI_BW_LIMITER driver\n");
}
ret = driver_create_file(&mem_bw_ctrl.driver, &driver_attr_concurrency_scenario);
if (ret) {
xlog_printk(ANDROID_LOG_ERROR, "EMI/BWL", "fail to create EMI_BW_LIMITER sysfs file\n");
}
/* Register DRAM type information interface */
ret = platform_driver_register(&ddr_type);
if (ret) {
xlog_printk(ANDROID_LOG_ERROR, "EMI/BWL", "fail to register DRAM_TYPE driver\n");
}
ret = driver_create_file(&ddr_type.driver, &driver_attr_ddr_type);
if (ret) {
xlog_printk(ANDROID_LOG_ERROR, "EMI/BWL", "fail to create DRAM_TYPE sysfs file\n");
}
return 0;
}
/*
* emi_bwl_mod_exit: module exit function.
*/
static void __exit emi_bwl_mod_exit(void)
{
}
//EXPORT_SYMBOL(get_dram_type);
late_initcall(emi_bwl_mod_init);
module_exit(emi_bwl_mod_exit);
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