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switch over to per-txq dma tag to facilitate parallelism on TX

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MFC after: 3 days
This commit is contained in:
Kip Macy 2007-04-12 04:31:44 +00:00
parent dd782506d8
commit 98d6fba71d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=168646
1 changed files with 12 additions and 12 deletions
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24
sys/dev/cxgb/cxgb_sge.c
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@ -608,10 +608,10 @@ alloc_ring(adapter_t *sc, size_t nelem, size_t elem_size, size_t sw_size,
if (parent_entry_tag == NULL)
return (0);
if ((err = bus_dma_tag_create(parent_entry_tag, PAGE_SIZE, 0,
if ((err = bus_dma_tag_create(parent_entry_tag, 1, 0,
BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
NULL, NULL, PAGE_SIZE, 1,
PAGE_SIZE, BUS_DMA_ALLOCNOW,
NULL, NULL, TX_MAX_SIZE, TX_MAX_SEGS,
TX_MAX_SIZE, BUS_DMA_ALLOCNOW,
NULL, NULL, entry_tag)) != 0) {
device_printf(sc->dev, "Cannot allocate descriptor entry tag\n");
return (ENOMEM);
@ -833,19 +833,19 @@ calc_tx_descs(const struct mbuf *m, int nsegs)
return flits_to_desc(flits);
}
static __inline unsigned int
busdma_map_mbufs(struct mbuf **m, adapter_t *sc, struct tx_sw_desc *stx,
bus_dma_segment_t *segs, int *nsegs)
static unsigned int
busdma_map_mbufs(struct mbuf **m, struct sge_txq *txq,
struct tx_sw_desc *stx, bus_dma_segment_t *segs, int *nsegs)
{
struct mbuf *m0, *mtmp;
struct mbuf *m0;
int err, pktlen;
m0 = *m;
pktlen = m0->m_pkthdr.len;
err = bus_dmamap_load_mbuf_sg(sc->tx_dmat, stx->map, m0, segs, nsegs, 0);
err = bus_dmamap_load_mbuf_sg(txq->entry_tag, stx->map, m0, segs, nsegs, 0);
if (err) {
int n = 0;
mtmp = m0;
struct mbuf *mtmp = m0;
while(mtmp) {
n++;
mtmp = mtmp->m_next;
@ -865,7 +865,7 @@ busdma_map_mbufs(struct mbuf **m, adapter_t *sc, struct tx_sw_desc *stx,
return (ENOBUFS);
}
*m = m0;
err = bus_dmamap_load_mbuf_sg(sc->tx_dmat, stx->map, m0, segs, nsegs, 0);
err = bus_dmamap_load_mbuf_sg(txq->entry_tag, stx->map, m0, segs, nsegs, 0);
}
if (err == ENOMEM) {
@ -880,7 +880,7 @@ busdma_map_mbufs(struct mbuf **m, adapter_t *sc, struct tx_sw_desc *stx,
return (err);
}
bus_dmamap_sync(sc->tx_dmat, stx->map, BUS_DMASYNC_PREWRITE);
bus_dmamap_sync(txq->entry_tag, stx->map, BUS_DMASYNC_PREWRITE);
stx->flags |= TX_SW_DESC_MAPPED;
return (0);
@ -1071,7 +1071,7 @@ t3_encap(struct port_info *p, struct mbuf **m)
wrp = (struct work_request_hdr *)txd;
if ((err = busdma_map_mbufs(m, sc, stx, segs, &nsegs)) != 0) {
if ((err = busdma_map_mbufs(m, txq, stx, segs, &nsegs)) != 0) {
return (err);
}
m0 = *m;