diff options
| author |   dlg <dlg@openbsd.org> | 2007-08-15 07:03:23 +0000 |
|---|---|---|
| committer | dlg <dlg@openbsd.org> | 2007-08-15 07:03:23 +0000 |
| commit | 4546f24ffa3bf19fbae2c5e8928d11a66f42b26d (patch) | |
| tree | 6f5a4e86a2bbdc11bc375ce2e8c77b3349b50dc2 | |
| parent | when the interface is brought up allocate all the things that are needed (diff) | |
| download | wireguard-openbsd-4546f24ffa3bf19fbae2c5e8928d11a66f42b26d.tar.xz wireguard-openbsd-4546f24ffa3bf19fbae2c5e8928d11a66f42b26d.zip | |
sync all the bits for use by the hardware, and then point the chip at them.
the firmware is now ready to send and recv packets.
| -rw-r--r-- | sys/dev/pci/if_nxe.c | 39 |
1 files changed, 35 insertions, 4 deletions
diff --git a/sys/dev/pci/if_nxe.c b/sys/dev/pci/if_nxe.c index 5d1ebe54879..a7c6c13e638 100644 --- a/sys/dev/pci/if_nxe.c +++ b/sys/dev/pci/if_nxe.c @@ -1,4 +1,4 @@ -/* $OpenBSD: if_nxe.c,v 1.34 2007/08/15 06:45:15 dlg Exp $ */ +/* $OpenBSD: if_nxe.c,v 1.35 2007/08/15 07:03:23 dlg Exp $ */ /* * Copyright (c) 2007 David Gwynne <dlg@openbsd.org> @@ -1086,15 +1086,36 @@ nxe_up(struct nxe_softc *sc) ring->r_size = htole32(nr->nr_nentries); sc->sc_rx_rings[i] = nr; + nxe_ring_sync(sc, sc->sc_rx_rings[i], BUS_DMASYNC_PREWRITE); } + /* nothing can possibly go wrong now */ + nxe_ring_sync(sc, sc->sc_status_ring, BUS_DMASYNC_PREREAD); + nxe_ring_sync(sc, sc->sc_cmd_ring, BUS_DMASYNC_PREWRITE); + bus_dmamap_sync(sc->sc_dmat, NXE_DMA_MAP(sc->sc_ctx), + 0, NXE_DMA_LEN(sc->sc_ctx), + BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); + + nxe_crb_write(sc, NXE_1_SW_CONTEXT_ADDR_LO(sc->sc_function), + (u_int32_t)dva); + nxe_crb_write(sc, NXE_1_SW_CONTEXT_ADDR_HI(sc->sc_function), + (u_int32_t)(dva >> 32)); + nxe_crb_write(sc, NXE_1_SW_CONTEXT(sc->sc_port), + NXE_1_SW_CONTEXT_SIG(sc->sc_port)); + SET(ifp->if_flags, IFF_RUNNING); + CLR(ifp->if_flags, IFF_OACTIVE); + + /* enable interrupts */ return; free_rx_rings: - while (i > 0) - nxe_ring_free(sc, sc->sc_rx_rings[--i]); + while (i > 0) { + i--; + nxe_ring_sync(sc, sc->sc_rx_rings[i], BUS_DMASYNC_POSTWRITE); + nxe_ring_free(sc, sc->sc_rx_rings[i]); + } nxe_ring_free(sc, sc->sc_status_ring); free_cmd_ring: @@ -1145,8 +1166,18 @@ nxe_down(struct nxe_softc *sc) CLR(ifp->if_flags, IFF_RUNNING | IFF_OACTIVE | IFF_ALLMULTI); - for (i = 0; i < NXE_NRING; i++) + /* XXX turn the chip off */ + + bus_dmamap_sync(sc->sc_dmat, NXE_DMA_MAP(sc->sc_ctx), + 0, NXE_DMA_LEN(sc->sc_ctx), + BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); + nxe_ring_sync(sc, sc->sc_cmd_ring, BUS_DMASYNC_POSTWRITE); + nxe_ring_sync(sc, sc->sc_status_ring, BUS_DMASYNC_POSTREAD); + + for (i = 0; i < NXE_NRING; i++) { + nxe_ring_sync(sc, sc->sc_rx_rings[i], BUS_DMASYNC_POSTWRITE); nxe_ring_free(sc, sc->sc_rx_rings[i]); + } nxe_ring_free(sc, sc->sc_status_ring); nxe_ring_free(sc, sc->sc_cmd_ring); nxe_dmamem_free(sc, sc->sc_ctx); |