Example #1
0
/*
 * Get the child iWMMXt state.
 */
static int ptrace_getwmmxregs(struct task_struct *tsk, void __user *ufp)
{
	struct thread_info *thread = task_thread_info(tsk);

	if (!test_ti_thread_flag(thread, TIF_USING_IWMMXT))
		return -ENODATA;
	iwmmxt_task_disable(thread);  /* force it to ram */
	return copy_to_user(ufp, &thread->fpstate.iwmmxt, IWMMXT_SIZE)
		? -EFAULT : 0;
}
Example #2
0
File: pm.c Project: ForayJones/iods
int pxa_pm_enter(suspend_state_t state)
{
	unsigned long sleep_save_checksum = 0, checksum = 0;
	int i;

#ifdef CONFIG_IWMMXT
	/* force any iWMMXt context to ram **/
	if (elf_hwcap & HWCAP_IWMMXT)
		iwmmxt_task_disable(NULL);
#endif

	/* skip registers saving for standby */
	if (state != PM_SUSPEND_STANDBY) {
		pxa_cpu_pm_fns->save(sleep_save);
		/* before sleeping, calculate and save a checksum */
		for (i = 0; i < pxa_cpu_pm_fns->save_size - 1; i++)
			sleep_save_checksum += sleep_save[i];
	}

	/* Clear sleep reset status */
	RCSR = RCSR_SMR;

	/* *** go zzz *** */
	pxa_cpu_pm_fns->enter(state);
	cpu_init();

	if (state != PM_SUSPEND_STANDBY) {
		/* after sleeping, validate the checksum */
		for (i = 0; i < pxa_cpu_pm_fns->save_size - 1; i++)
			checksum += sleep_save[i];

		/* if invalid, display message and wait for a hardware reset */
		if (checksum != sleep_save_checksum) {
#ifdef CONFIG_ARCH_LUBBOCK
			LUB_HEXLED = 0xbadbadc5;
#endif
			while (1)
				pxa_cpu_pm_fns->enter(state);
		}
		pxa_cpu_pm_fns->restore(sleep_save);
	}

	pr_debug("*** made it back from resume\n");

	return 0;
}
Example #3
0
int pxa_pm_enter(suspend_state_t state)
{
	unsigned long sleep_save_checksum = 0, checksum = 0;
	int i;

#ifdef CONFIG_IWMMXT
	
	if (elf_hwcap & HWCAP_IWMMXT)
		iwmmxt_task_disable(NULL);
#endif

	
	if (state != PM_SUSPEND_STANDBY && pxa_cpu_pm_fns->save) {
		pxa_cpu_pm_fns->save(sleep_save);
		
		for (i = 0; i < pxa_cpu_pm_fns->save_count - 1; i++)
			sleep_save_checksum += sleep_save[i];
	}

	
	pxa_cpu_pm_fns->enter(state);

	if (state != PM_SUSPEND_STANDBY && pxa_cpu_pm_fns->restore) {
		
		for (i = 0; i < pxa_cpu_pm_fns->save_count - 1; i++)
			checksum += sleep_save[i];

		
		if (checksum != sleep_save_checksum) {

			lubbock_set_hexled(0xbadbadc5);

			while (1)
				pxa_cpu_pm_fns->enter(state);
		}
		pxa_cpu_pm_fns->restore(sleep_save);
	}

	pr_debug("*** made it back from resume\n");

	return 0;
}
Example #4
0
int pxa_pm_enter(suspend_state_t state)
{
	unsigned long sleep_save[SLEEP_SAVE_SIZE];
	unsigned long checksum = 0;
	struct timespec delta, rtc;
	int i;
	extern void pxa_cpu_pm_enter(suspend_state_t state);

#ifdef CONFIG_IWMMXT
	/* force any iWMMXt context to ram **/
	iwmmxt_task_disable(NULL);
#endif

	/* preserve current time */
	rtc.tv_sec = RCNR;
	rtc.tv_nsec = 0;
	save_time_delta(&delta, &rtc);

	SAVE(GPLR0); SAVE(GPLR1); SAVE(GPLR2);
	SAVE(GPDR0); SAVE(GPDR1); SAVE(GPDR2);
	SAVE(GRER0); SAVE(GRER1); SAVE(GRER2);
	SAVE(GFER0); SAVE(GFER1); SAVE(GFER2);
	SAVE(PGSR0); SAVE(PGSR1); SAVE(PGSR2);

	SAVE(GAFR0_L); SAVE(GAFR0_U);
	SAVE(GAFR1_L); SAVE(GAFR1_U);
	SAVE(GAFR2_L); SAVE(GAFR2_U);

#ifdef CONFIG_PXA27x
	SAVE(MDREFR);
	SAVE(GPLR3); SAVE(GPDR3); SAVE(GRER3); SAVE(GFER3); SAVE(PGSR3);
	SAVE(GAFR3_L); SAVE(GAFR3_U);
	SAVE(PWER); SAVE(PCFR); SAVE(PRER);
	SAVE(PFER); SAVE(PKWR);
#endif

	SAVE(ICMR);
	ICMR = 0;

	SAVE(CKEN);
	SAVE(PSTR);

	/* Note: wake up source are set up in each machine specific files */

	/* clear GPIO transition detect  bits */
	GEDR0 = GEDR0; GEDR1 = GEDR1; GEDR2 = GEDR2;
#ifdef CONFIG_PXA27x
	GEDR3 = GEDR3;
#endif

	/* Clear sleep reset status */
	RCSR = RCSR_SMR;

	/* before sleeping, calculate and save a checksum */
	for (i = 0; i < SLEEP_SAVE_SIZE - 1; i++)
		checksum += sleep_save[i];
	sleep_save[SLEEP_SAVE_CKSUM] = checksum;

	/* *** go zzz *** */
	pxa_cpu_pm_enter(state);

	cpu_init();

	/* after sleeping, validate the checksum */
	checksum = 0;
	for (i = 0; i < SLEEP_SAVE_SIZE - 1; i++)
		checksum += sleep_save[i];

	/* if invalid, display message and wait for a hardware reset */
	if (checksum != sleep_save[SLEEP_SAVE_CKSUM]) {
#ifdef CONFIG_ARCH_LUBBOCK
		LUB_HEXLED = 0xbadbadc5;
#endif
		while (1)
			pxa_cpu_pm_enter(state);
	}

	/* ensure not to come back here if it wasn't intended */
	PSPR = 0;

	/* restore registers */
	RESTORE_GPLEVEL(0); RESTORE_GPLEVEL(1); RESTORE_GPLEVEL(2);
	RESTORE(GPDR0); RESTORE(GPDR1); RESTORE(GPDR2);
	RESTORE(GAFR0_L); RESTORE(GAFR0_U);
	RESTORE(GAFR1_L); RESTORE(GAFR1_U);
	RESTORE(GAFR2_L); RESTORE(GAFR2_U);
	RESTORE(GRER0); RESTORE(GRER1); RESTORE(GRER2);
	RESTORE(GFER0); RESTORE(GFER1); RESTORE(GFER2);
	RESTORE(PGSR0); RESTORE(PGSR1); RESTORE(PGSR2);

#ifdef CONFIG_PXA27x
	RESTORE(MDREFR);
	RESTORE_GPLEVEL(3); RESTORE(GPDR3);
	RESTORE(GAFR3_L); RESTORE(GAFR3_U);
	RESTORE(GRER3); RESTORE(GFER3); RESTORE(PGSR3);
	RESTORE(PWER); RESTORE(PCFR); RESTORE(PRER);
	RESTORE(PFER); RESTORE(PKWR);
#endif

	PSSR = PSSR_RDH | PSSR_PH;

	RESTORE(CKEN);

	ICLR = 0;
	ICCR = 1;
	RESTORE(ICMR);

	RESTORE(PSTR);

	/* restore current time */
	rtc.tv_sec = RCNR;
	restore_time_delta(&delta, &rtc);

#ifdef DEBUG
	printk(KERN_DEBUG "*** made it back from resume\n");
#endif

	return 0;
}