C++ (Cpp) opal_slw_set_reg 예제들

예제 #1

파일: idle.c 프로젝트: Gentoo-zh/linux-cjktty

static void pnv_program_cpu_hotplug_lpcr(unsigned int cpu, u64 lpcr_val)
{
	u64 pir = get_hard_smp_processor_id(cpu);

	mtspr(SPRN_LPCR, lpcr_val);
	opal_slw_set_reg(pir, SPRN_LPCR, lpcr_val);
}

예제 #2

파일: idle.c 프로젝트: CCNITSilchar/linux

static void pnv_program_cpu_hotplug_lpcr(unsigned int cpu, u64 lpcr_val)
{
	u64 pir = get_hard_smp_processor_id(cpu);

	mtspr(SPRN_LPCR, lpcr_val);

	/*
	 * Program the LPCR via stop-api only if the deepest stop state
	 * can lose hypervisor context.
	 */
	if (supported_cpuidle_states & OPAL_PM_LOSE_FULL_CONTEXT)
		opal_slw_set_reg(pir, SPRN_LPCR, lpcr_val);
}

예제 #3

파일: idle.c 프로젝트: CCNITSilchar/linux

static int pnv_save_sprs_for_deep_states(void)
{
	int cpu;
	int rc;

	/*
	 * hid0, hid1, hid4, hid5, hmeer and lpcr values are symmetric across
	 * all cpus at boot. Get these reg values of current cpu and use the
	 * same across all cpus.
	 */
	uint64_t lpcr_val = mfspr(SPRN_LPCR);
	uint64_t hid0_val = mfspr(SPRN_HID0);
	uint64_t hid1_val = mfspr(SPRN_HID1);
	uint64_t hid4_val = mfspr(SPRN_HID4);
	uint64_t hid5_val = mfspr(SPRN_HID5);
	uint64_t hmeer_val = mfspr(SPRN_HMEER);
	uint64_t msr_val = MSR_IDLE;
	uint64_t psscr_val = pnv_deepest_stop_psscr_val;

	for_each_present_cpu(cpu) {
		uint64_t pir = get_hard_smp_processor_id(cpu);
		uint64_t hsprg0_val = (uint64_t)paca_ptrs[cpu];

		rc = opal_slw_set_reg(pir, SPRN_HSPRG0, hsprg0_val);
		if (rc != 0)
			return rc;

		rc = opal_slw_set_reg(pir, SPRN_LPCR, lpcr_val);
		if (rc != 0)
			return rc;

		if (cpu_has_feature(CPU_FTR_ARCH_300)) {
			rc = opal_slw_set_reg(pir, P9_STOP_SPR_MSR, msr_val);
			if (rc)
				return rc;

			rc = opal_slw_set_reg(pir,
					      P9_STOP_SPR_PSSCR, psscr_val);

			if (rc)
				return rc;
		}

		/* HIDs are per core registers */
		if (cpu_thread_in_core(cpu) == 0) {

			rc = opal_slw_set_reg(pir, SPRN_HMEER, hmeer_val);
			if (rc != 0)
				return rc;

			rc = opal_slw_set_reg(pir, SPRN_HID0, hid0_val);
			if (rc != 0)
				return rc;

			/* Only p8 needs to set extra HID regiters */
			if (!cpu_has_feature(CPU_FTR_ARCH_300)) {

				rc = opal_slw_set_reg(pir, SPRN_HID1, hid1_val);
				if (rc != 0)
					return rc;

				rc = opal_slw_set_reg(pir, SPRN_HID4, hid4_val);
				if (rc != 0)
					return rc;

				rc = opal_slw_set_reg(pir, SPRN_HID5, hid5_val);
				if (rc != 0)
					return rc;
			}
		}
	}

	return 0;
}

예제 #4

파일: setup.c 프로젝트: gmujica/ubuntu-fixes

int pnv_save_sprs_for_winkle(void)
{
	int cpu;
	int rc;

	/*
	 * hid0, hid1, hid4, hid5, hmeer and lpcr values are symmetric accross
	 * all cpus at boot. Get these reg values of current cpu and use the
	 * same accross all cpus.
	 */
	uint64_t lpcr_val = mfspr(SPRN_LPCR);
	uint64_t hid0_val = mfspr(SPRN_HID0);
	uint64_t hid1_val = mfspr(SPRN_HID1);
	uint64_t hid4_val = mfspr(SPRN_HID4);
	uint64_t hid5_val = mfspr(SPRN_HID5);
	uint64_t hmeer_val = mfspr(SPRN_HMEER);

	for_each_possible_cpu(cpu) {
		uint64_t pir = get_hard_smp_processor_id(cpu);
		uint64_t hsprg0_val = (uint64_t)&paca[cpu];

		/*
		 * HSPRG0 is used to store the cpu's pointer to paca. Hence last
		 * 3 bits are guaranteed to be 0. Program slw to restore HSPRG0
		 * with 63rd bit set, so that when a thread wakes up at 0x100 we
		 * can use this bit to distinguish between fastsleep and
		 * deep winkle.
		 */
		hsprg0_val |= 1;

		rc = opal_slw_set_reg(pir, SPRN_HSPRG0, hsprg0_val);
		if (rc != 0)
			return rc;

		rc = opal_slw_set_reg(pir, SPRN_LPCR, lpcr_val);
		if (rc != 0)
			return rc;

		/* HIDs are per core registers */
		if (cpu_thread_in_core(cpu) == 0) {

			rc = opal_slw_set_reg(pir, SPRN_HMEER, hmeer_val);
			if (rc != 0)
				return rc;

			rc = opal_slw_set_reg(pir, SPRN_HID0, hid0_val);
			if (rc != 0)
				return rc;

			rc = opal_slw_set_reg(pir, SPRN_HID1, hid1_val);
			if (rc != 0)
				return rc;

			rc = opal_slw_set_reg(pir, SPRN_HID4, hid4_val);
			if (rc != 0)
				return rc;

			rc = opal_slw_set_reg(pir, SPRN_HID5, hid5_val);
			if (rc != 0)
				return rc;
		}
	}

	return 0;
}