C++ (Cpp) octeon_cop2_restore Beispiele

Beispiel #1

Datei: octeon-crypto.c Projekt: garyvan/openwrt-1.6

/**
 * Disable access to Octeon's COP2 crypto hardware in the kernel.
 * This must be called after an octeon_crypto_enable() before any
 * context switch or return to userspace.
 *
 * @param state  COP2 state to restore
 * @param flags  Return value from octeon_crypto_enable()
 */
void octeon_crypto_disable(struct octeon_cop2_state *state,
			   unsigned long crypto_flags)
{
	unsigned long flags;

	local_irq_save(flags);
	if (crypto_flags & ST0_CU2)
		octeon_cop2_restore(state);
	else
		write_c0_status(read_c0_status() & ~ST0_CU2);
	local_irq_restore(flags);
}

Beispiel #2

Datei: cpu.c Projekt: CSCLOG/beaglebone

static int cnmips_cu2_call(struct notifier_block *nfb, unsigned long action,
	void *data)
{
	unsigned long flags;
	unsigned int status;

	switch (action) {
	case CU2_EXCEPTION:
		prefetch(&current->thread.cp2);
		local_irq_save(flags);
		KSTK_STATUS(current) |= ST0_CU2;
		status = read_c0_status();
		write_c0_status(status | ST0_CU2);
		octeon_cop2_restore(&(current->thread.cp2));
		write_c0_status(status & ~ST0_CU2);
		local_irq_restore(flags);

		return NOTIFY_BAD;	/* Don't call default notifier */
	}

	return NOTIFY_OK;		/* Let default notifier send signals */
}