/*
* function to charge a given rq with buffers from a pool's free list
*
* dev - software handle to the device
* rq - pointer to the RQ to charge
* nbufs - numbers of buffers to be charged
*
* return number of rqe's charges.
*/
static inline int
oce_rq_charge(struct oce_rq *rq, uint32_t nbufs, boolean_t repost)
{
struct oce_nic_rqe *rqe;
oce_rq_bdesc_t *rqbd;
oce_rq_bdesc_t **shadow_rq;
int cnt;
int cur_index;
oce_ring_buffer_t *ring;
shadow_rq = rq->shadow_ring;
ring = rq->ring;
cur_index = ring->cidx;
for (cnt = 0; cnt < nbufs; cnt++) {
if (!repost) {
rqbd = oce_rqb_alloc(rq);
} else {
/* just repost the buffers from shadow ring */
rqbd = shadow_rq[cur_index];
cur_index = GET_Q_NEXT(cur_index, 1, ring->num_items);
}
/* fill the rqes */
rqe = RING_GET_PRODUCER_ITEM_VA(rq->ring,
struct oce_nic_rqe);
rqe->u0.s.frag_pa_lo = rqbd->frag_addr.dw.addr_lo;
rqe->u0.s.frag_pa_hi = rqbd->frag_addr.dw.addr_hi;
shadow_rq[rq->ring->pidx] = rqbd;
DW_SWAP(u32ptr(rqe), sizeof (struct oce_nic_rqe));
RING_PUT(rq->ring, 1);
}
return (cnt);
} /* oce_rq_charge */
static void
oce_fill_ring_descs(struct oce_wq *wq, oce_wqe_desc_t *wqed)
{
struct oce_nic_frag_wqe *wqe;
int i;
/* Copy the precreate WQE descs to the ring desc */
for (i = 0; i < wqed->wqe_cnt; i++) {
wqe = RING_GET_PRODUCER_ITEM_VA(wq->ring,
struct oce_nic_frag_wqe);
bcopy(&wqed->frag[i], wqe, NIC_WQE_SIZE);
RING_PUT(wq->ring, 1);
}
} /* oce_fill_ring_descs */
