/*ARGSUSED*/
int
gfxp_devmap_umem_setup(devmap_cookie_t dhc, dev_info_t *dip,
struct devmap_callback_ctl *callbackops, ddi_umem_cookie_t cookie,
offset_t off, size_t len, uint_t maxprot, uint_t flags,
ddi_device_acc_attr_t *accattrp)
{
uint_t l_flags = flags & ~IOMEM_DATA_MASK; /* clear cache attrs */
int e;
/*
* Set an appropriate attribute from devacc_attr_dataorder
* to keep compatibility. The cache attributes are igonred
* if specified.
*/
if (accattrp != NULL) {
if (accattrp->devacc_attr_dataorder == DDI_STRICTORDER_ACC) {
l_flags |= IOMEM_DATA_UNCACHED;
} else if (accattrp->devacc_attr_dataorder ==
DDI_MERGING_OK_ACC) {
l_flags |= IOMEM_DATA_UC_WR_COMBINE;
} else {
l_flags |= IOMEM_DATA_CACHED;
}
}
e = devmap_umem_setup(dhc, dip, callbackops, cookie, off, len, maxprot,
l_flags, accattrp);
return (e);
}
/*ARGSUSED*/
static int
xpvtap_devmap(dev_t dev, devmap_cookie_t dhp, offset_t off, size_t len,
size_t *maplen, uint_t model)
{
xpvtap_user_ring_t *usring;
xpvtap_state_t *state;
int instance;
int e;
instance = getminor(dev);
state = ddi_get_soft_state(xpvtap_statep, instance);
if (state == NULL) {
return (EBADF);
}
/* we should only get here if the offset was == 0 */
if (off != 0) {
return (EINVAL);
}
/* we should only be mapping in one page */
if (len != PAGESIZE) {
return (EINVAL);
}
/*
* we already allocated the user ring during driver attach, all we
* need to do is map it into the user app's VA.
*/
usring = &state->bt_user_ring;
e = devmap_umem_setup(dhp, state->bt_dip, NULL, usring->ur_cookie, 0,
PAGESIZE, PROT_ALL, DEVMAP_DEFAULTS, NULL);
if (e < 0) {
return (e);
}
/* return the size to compete the devmap */
*maplen = PAGESIZE;
return (0);
}
