static void
chipdetach(struct bcm4xxx *ch)
{
ET_TRACE(("et%d: chipdetach\n", ch->etc->unit));
if (ch == NULL)
return;
#ifdef ETROBO
/* free robo state */
if (ch->etc->robo)
bcm_robo_detach(ch->etc->robo);
#endif /* ETROBO */
#ifdef ETADM
/* free ADMtek state */
if (ch->adm)
adm_detach(ch->adm);
#endif /* ETADM */
/* free dma state */
if (ch->di)
dma_detach(ch->di);
ch->di = NULL;
/* put the core back into reset */
if (ch->sih)
si_core_disable(ch->sih, 0);
/* free si handle */
si_detach(ch->sih);
ch->sih = NULL;
/* free vars */
if (ch->vars)
MFREE(ch->osh, ch->vars, ch->vars_size);
/* free chip private state */
MFREE(ch->osh, ch, sizeof(struct bcm4xxx));
}
void*
dma_attach(void *drv, void *dev, char *name, dmaregs_t *regs, uint ntxd, uint nrxd,
uint rxbufsize, uint nrxpost, uint rxoffset, uint ddoffset, uint dataoffset, uint *msg_level)
{
dma_info_t *di;
void *va;
ASSERT(ntxd <= MAXDD);
ASSERT(nrxd <= MAXDD);
/* allocate private info structure */
if ((di = MALLOC(sizeof (dma_info_t))) == NULL)
return (NULL);
bzero((char*)di, sizeof (dma_info_t));
/* set message level */
di->msg_level = msg_level ? msg_level : &dma_msg_level;
DMA_TRACE(("%s: dma_attach: drv 0x%x dev 0x%x regs 0x%x ntxd %d nrxd %d rxbufsize %d nrxpost %d rxoffset %d ddoffset 0x%x dataoffset 0x%x\n", name, (uint)drv, (uint)dev, (uint)regs, ntxd, nrxd, rxbufsize, nrxpost, rxoffset, ddoffset, dataoffset));
/* make a private copy of our callers name */
strncpy(di->name, name, MAXNAMEL);
di->name[MAXNAMEL-1] = '\0';
di->drv = drv;
di->dev = dev;
di->regs = regs;
/* allocate transmit descriptor ring */
if (ntxd) {
if ((va = DMA_ALLOC_CONSISTENT(dev, (DMAMAXRINGSZ + DMARINGALIGN), &di->txdpa)) == NULL)
goto fail;
di->txd = (dmadd_t*) ROUNDUP(va, DMARINGALIGN);
di->txdalign = ((uint)di->txd - (uint)va);
di->txdpa = (void*) ((uint)di->txdpa + di->txdalign);
ASSERT(ISALIGNED(di->txd, DMARINGALIGN));
}
/* allocate receive descriptor ring */
if (nrxd) {
if ((va = DMA_ALLOC_CONSISTENT(dev, (DMAMAXRINGSZ + DMARINGALIGN), &di->rxdpa)) == NULL)
goto fail;
di->rxd = (dmadd_t*) ROUNDUP(va, DMARINGALIGN);
di->rxdalign = ((uint)di->rxd - (uint)va);
di->rxdpa = (void*) ((uint)di->rxdpa + di->rxdalign);
ASSERT(ISALIGNED(di->rxd, DMARINGALIGN));
}
/* save tunables */
di->ntxd = ntxd;
di->nrxd = nrxd;
di->rxbufsize = rxbufsize;
di->nrxpost = nrxpost;
di->rxoffset = rxoffset;
di->ddoffset = ddoffset;
di->dataoffset = dataoffset;
return ((void*)di);
fail:
dma_detach((void*)di);
return (NULL);
}
