/*
* Free Buffer Supply Queue Data Structures
*
* Arguments:
* fup pointer to device unit structure
*
* Returns:
* none
*/
void
fore_buf_free(Fore_unit *fup)
{
Buf_handle *bhp;
KBuffer *m;
/*
* Free any previously supplied and not returned buffers
*/
if (fup->fu_flags & CUF_INITED) {
/*
* Run through Strategy 1 Small queue
*/
while ((bhp = Q_HEAD(fup->fu_buf1s_bq, Buf_handle)) != NULL) {
caddr_t cp;
/*
* Back off to buffer
*/
m = (KBuffer *)((caddr_t)bhp - BUF1_SM_HOFF);
/*
* Dequeue handle and free buffer
*/
DEQUEUE(bhp, Buf_handle, bh_qelem, fup->fu_buf1s_bq);
KB_DATASTART(m, cp, caddr_t);
DMA_FREE_ADDR(cp, bhp->bh_dma, BUF1_SM_SIZE, 0);
KB_FREEALL(m);
}
/*
* Run through Strategy 1 Large queue
*/
while ((bhp = Q_HEAD(fup->fu_buf1l_bq, Buf_handle)) != NULL) {
caddr_t cp;
/*
* Back off to buffer
*/
m = (KBuffer *)((caddr_t)bhp - BUF1_LG_HOFF);
/*
* Dequeue handle and free buffer
*/
DEQUEUE(bhp, Buf_handle, bh_qelem, fup->fu_buf1l_bq);
KB_DATASTART(m, cp, caddr_t);
DMA_FREE_ADDR(cp, bhp->bh_dma, BUF1_LG_SIZE, 0);
KB_FREEALL(m);
}
}
/*
* Free the status words
*/
if (fup->fu_buf1s_stat) {
if (fup->fu_buf1s_statd) {
DMA_FREE_ADDR(fup->fu_buf1s_stat, fup->fu_buf1s_statd,
sizeof(Q_status) *
(BUF1_SM_QUELEN + BUF1_LG_QUELEN),
ATM_DEV_NONCACHE);
}
atm_dev_free((volatile void *)fup->fu_buf1s_stat);
fup->fu_buf1s_stat = NULL;
fup->fu_buf1s_statd = NULL;
fup->fu_buf1l_stat = NULL;
fup->fu_buf1l_statd = NULL;
}
/*
* Free the transmit descriptors
*/
if (fup->fu_buf1s_desc) {
if (fup->fu_buf1s_descd) {
DMA_FREE_ADDR(fup->fu_buf1s_desc, fup->fu_buf1s_descd,
sizeof(Buf_descr) *
((BUF1_SM_QUELEN * BUF1_SM_ENTSIZE) +
(BUF1_LG_QUELEN * BUF1_LG_ENTSIZE)),
0);
}
atm_dev_free(fup->fu_buf1s_desc);
fup->fu_buf1s_desc = NULL;
fup->fu_buf1s_descd = NULL;
fup->fu_buf1l_desc = NULL;
fup->fu_buf1l_descd = NULL;
}
return;
}
/*
* Halt driver processing
*
* This will be called just prior to unloading the module from memory.
* Everything we've setup since we've been loaded must be undone here.
*
* Arguments:
* none
*
* Returns:
* 0 shutdown was successful
* errno shutdown failed - reason indicated
*
*/
static int
fore_stop()
{
int err = 0;
int s = splimp();
int i;
/*
* Stop the watchdog timer
*/
(void) atm_untimeout(&fore_timer);
/*
* Clean up each device (if any)
*/
for ( i = 0; i < fore_nunits; i++ ) {
Fore_unit *fup = fore_units[i];
if (fup == NULL)
continue;
/*
* Deregister device from kernel services
*/
if (err = atm_physif_deregister((Cmn_unit *)fup)) {
(void) splx(s);
return (err);
}
/*
* Unattach the device from the system
*/
fore_unattach(fup);
/*
* Free any Fore-specific device resources
*/
fore_interface_free(fup);
/*
* Free the unit structure
*/
atm_dev_free(fup);
fore_units[i] = NULL;
}
fore_nunits = 0;
/*
* Now free our global resources
*/
/*
* Release our storage pools
*/
atm_release_pool(&fore_vcc_pool);
atm_release_pool(&fore_nif_pool);
/*
* Release all DMA mappings
*/
DMA_RELEASE();
fore_inited = 0;
(void) splx(s);
return (0);
}
