static int ca91cx42_lm_get()

in bridges/vme_ca91cx42.c [1361:1397]

• 29 lines of code
• 9 McCabe index (conditional complexity)

static int ca91cx42_lm_get(struct vme_lm_resource *lm,
	unsigned long long *lm_base, u32 *aspace, u32 *cycle)
{
	u32 lm_ctl, enabled = 0;
	struct ca91cx42_driver *bridge;

	bridge = lm->parent->driver_priv;

	mutex_lock(&lm->mtx);

	*lm_base = (unsigned long long)ioread32(bridge->base + LM_BS);
	lm_ctl = ioread32(bridge->base + LM_CTL);

	if (lm_ctl & CA91CX42_LM_CTL_EN)
		enabled = 1;

	if ((lm_ctl & CA91CX42_LM_CTL_AS_M) == CA91CX42_LM_CTL_AS_A16)
		*aspace = VME_A16;
	if ((lm_ctl & CA91CX42_LM_CTL_AS_M) == CA91CX42_LM_CTL_AS_A24)
		*aspace = VME_A24;
	if ((lm_ctl & CA91CX42_LM_CTL_AS_M) == CA91CX42_LM_CTL_AS_A32)
		*aspace = VME_A32;

	*cycle = 0;
	if (lm_ctl & CA91CX42_LM_CTL_SUPR)
		*cycle |= VME_SUPER;
	if (lm_ctl & CA91CX42_LM_CTL_NPRIV)
		*cycle |= VME_USER;
	if (lm_ctl & CA91CX42_LM_CTL_PGM)
		*cycle |= VME_PROG;
	if (lm_ctl & CA91CX42_LM_CTL_DATA)
		*cycle |= VME_DATA;

	mutex_unlock(&lm->mtx);

	return enabled;
}