/*
* Actual allocator for DMAable memory.
*/
void *__sym_calloc_dma_unlocked(m_pool_ident_t dev_dmat, int size, char *name)
{
m_pool_p mp;
void *m = NULL;
mp = ___get_dma_pool(dev_dmat);
if (!mp)
mp = ___cre_dma_pool(dev_dmat);
if (mp)
m = __sym_calloc(mp, size, name);
#ifdef SYM_MEM_FREE_UNUSED
if (mp && !mp->nump)
___del_dma_pool(mp);
#endif
return m;
}
void __sym_mfree_dma(m_pool_ident_t dev_dmat, void *m, int size, char *name)
{
unsigned long flags;
m_pool_p mp;
spin_lock_irqsave(&sym53c8xx_lock, flags);
mp = ___get_dma_pool(dev_dmat);
if (!mp)
goto out;
__sym_mfree(mp, m, size, name);
#ifdef SYM_MEM_FREE_UNUSED
if (!mp->nump)
___del_dma_pool(mp);
#endif
out:
spin_unlock_irqrestore(&sym53c8xx_lock, flags);
}
/*
* Actual virtual to bus physical address translator
* for 32 bit addressable DMAable memory.
*/
dma_addr_t __vtobus(m_pool_ident_t dev_dmat, void *m)
{
unsigned long flags;
m_pool_p mp;
int hc = VTOB_HASH_CODE(m);
m_vtob_p vp = NULL;
void *a = (void *)((unsigned long)m & ~SYM_MEM_CLUSTER_MASK);
dma_addr_t b;
spin_lock_irqsave(&sym53c8xx_lock, flags);
mp = ___get_dma_pool(dev_dmat);
if (mp) {
vp = mp->vtob[hc];
while (vp && vp->vaddr != a)
vp = vp->next;
}
if (!vp)
panic("sym: VTOBUS FAILED!\n");
b = vp->baddr + (m - a);
spin_unlock_irqrestore(&sym53c8xx_lock, flags);
return b;
}
/*
* Actual allocator for DMAable memory.
*/
void *__sym_calloc_dma(m_pool_ident_t dev_dmat, int size, char *name)
{
unsigned long flags;
m_pool_p mp;
void *m = NULL;
spin_lock_irqsave(&sym53c8xx_lock, flags);
mp = ___get_dma_pool(dev_dmat);
if (!mp)
mp = ___cre_dma_pool(dev_dmat);
if (!mp)
goto out;
m = __sym_calloc(mp, size, name);
#ifdef SYM_MEM_FREE_UNUSED
if (!mp->nump)
___del_dma_pool(mp);
#endif
out:
spin_unlock_irqrestore(&sym53c8xx_lock, flags);
return m;
}