static int tsi148_lm_get()

in bridges/vme_tsi148.c [1986:2030]

• 32 lines of code
• 10 McCabe index (conditional complexity)

static int tsi148_lm_get(struct vme_lm_resource *lm,
	unsigned long long *lm_base, u32 *aspace, u32 *cycle)
{
	u32 lm_base_high, lm_base_low, lm_ctl, enabled = 0;
	struct tsi148_driver *bridge;

	bridge = lm->parent->driver_priv;

	mutex_lock(&lm->mtx);

	lm_base_high = ioread32be(bridge->base + TSI148_LCSR_LMBAU);
	lm_base_low = ioread32be(bridge->base + TSI148_LCSR_LMBAL);
	lm_ctl = ioread32be(bridge->base + TSI148_LCSR_LMAT);

	reg_join(lm_base_high, lm_base_low, lm_base);

	if (lm_ctl & TSI148_LCSR_LMAT_EN)
		enabled = 1;

	if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A16)
		*aspace |= VME_A16;

	if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A24)
		*aspace |= VME_A24;

	if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A32)
		*aspace |= VME_A32;

	if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A64)
		*aspace |= VME_A64;


	if (lm_ctl & TSI148_LCSR_LMAT_SUPR)
		*cycle |= VME_SUPER;
	if (lm_ctl & TSI148_LCSR_LMAT_NPRIV)
		*cycle |= VME_USER;
	if (lm_ctl & TSI148_LCSR_LMAT_PGM)
		*cycle |= VME_PROG;
	if (lm_ctl & TSI148_LCSR_LMAT_DATA)
		*cycle |= VME_DATA;

	mutex_unlock(&lm->mtx);

	return enabled;
}