C++ (Cpp) armV7_perf_mon_enable Exemples

Exemple #1

void cpu_start_restore(void)
{
    struct cpu_cluster *cc = (struct cpu_cluster *)__pa(&cpu_cluster);
    struct cpu *cp = (struct cpu *)__pa(&cpu);
    int *chip_ver = (int *)__pa(&e1_chip);

#if 0 //wschen 2011-08-12
    extern int armV7_perf_mon_is_overflow(unsigned int n);
    extern unsigned int armV7_perf_mon_get_cyc_cnt(void);
    extern void armV7_perf_mon_reset(void);
    extern void armV7_perf_mon_enable(unsigned int n);

    armV7_perf_mon_enable(0);
    armV7_perf_mon_reset();
    armV7_perf_mon_enable(1);
#endif

    if (*chip_ver) {
        volatile int i;

        for (i = 0; i < DELAY_COUNT; i++) {
            nop();
        }

        if (cc->power_state == STATUS_DORMANT) {
            reg_write(IO_VIRT_TO_PHYS(SC_PWR_CON0), 0xE125); /* SRAM wake up */
        } else {
            reg_write(IO_VIRT_TO_PHYS(SC_PWR_CON0), 0xC125); /* SRAM power up */
        }

        dsb();

        for (i = 0; i < DELAY_COUNT; i++) {
            nop();
        }

        if (cc->power_state == STATUS_DORMANT) {
            reg_write(IO_VIRT_TO_PHYS(SC_PWR_CON2), 0xE525); /* SRAM wake up */
        } else {
            reg_write(IO_VIRT_TO_PHYS(SC_PWR_CON2), 0xC525); /* SRAM power up */
        }

        dsb();

        for (i = 0; i < DELAY_COUNT; i++) {
            nop();
        }
    }

    platform_restore_context(cc, cp);
}

Exemple #2

/*
 * mt65xx_mon_disable: Disable hardware monitors.
 * Return 0.
 */
int mt65xx_mon_disable(void)
{
    // disable ARM performance monitors
    armV7_perf_mon_enable(0);

    // disable all L2C event counters
    mt65xx_reg_sync_writel(0, PL310_BASE + L2X0_EVENT_CNT_CTRL);

    BM_Pause();
    
    return 0;
}

Exemple #3

/*
 * mt65xx_mon_enable: Enable hardware monitors.
 * Return 0.
 */
int mt65xx_mon_enable(void)
{
    // reset all ARM monitor counters to 0
    armV7_perf_mon_reset();

    // enable ARM performance monitors
    armV7_perf_mon_enable(1);

    // reset and enable L2C event counters
    mt65xx_reg_sync_writel(7, PL310_BASE + L2X0_EVENT_CNT_CTRL);

    // stopping EMI monitors will reset all counters
    BM_Enable(0);

    // start EMI monitor counting
    BM_Enable(1);

    return 0;
}