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hyperv/hn: Use hyperv busdma(9) helper.

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MFC after:	1 week
Sponsored by:	Microsoft OSTC
Differential Revision:	https://reviews.freebsd.org/D6444
This commit is contained in:
sephe 2016-05-23 06:52:42 +00:00
parent 86f0ce9eec
commit 584c5b9bae
1 changed files with 2 additions and 13 deletions
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15
sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
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@ -113,6 +113,7 @@ __FBSDID("$FreeBSD$");
#include <machine/in_cksum.h>
#include <dev/hyperv/include/hyperv.h>
#include <dev/hyperv/include/hyperv_busdma.h>
#include "hv_net_vsc.h"
#include "hv_rndis.h"
#include "hv_rndis_filter.h"
@ -2170,18 +2171,6 @@ hn_check_iplen(const struct mbuf *m, int hoff)
return ip->ip_p;
}
static void
hn_dma_map_paddr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
{
bus_addr_t *paddr = arg;
if (error)
return;
KASSERT(nseg == 1, ("too many segments %d!", nseg));
*paddr = segs->ds_addr;
}
static void
hn_create_rx_data(struct hn_softc *sc, int ring_cnt)
{
@ -2472,7 +2461,7 @@ hn_create_tx_ring(struct hn_softc *sc, int id)
error = bus_dmamap_load(txr->hn_tx_rndis_dtag,
txd->rndis_msg_dmap,
txd->rndis_msg, HN_RNDIS_MSG_LEN,
hn_dma_map_paddr, &txd->rndis_msg_paddr,
hyperv_dma_map_paddr, &txd->rndis_msg_paddr,
BUS_DMA_NOWAIT);
if (error) {
device_printf(sc->hn_dev,