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Code Issues Releases Activity

- Clean up the fxp_release() and fxp_detach() functions.

Browse Source 
- Be sure to teardown the interrupt first so that "kldunload if_fxp"
  doesn't panic the box.  It's now deadlocking rather than crashing,
  which isn't really better, but I'm unsure this is fxp(4)'s fault.
- Change a bus_dmamap_sync() call to also do a BUS_DMASYNC_PREREAD
  now that we can pass several operations.
This commit is contained in:
Maxime Henrion 2003-04-10 23:15:12 +00:00
parent 0da46d776b
commit b983c7b3ed
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=113349
1 changed files with 46 additions and 46 deletions
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92
sys/dev/fxp/if_fxp.c
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@ -804,33 +804,8 @@ fxp_release(struct fxp_softc *sc)
struct fxp_tx *txp;
int i;
for (i = 0; i < FXP_NRFABUFS; i++) {
rxp = &sc->fxp_desc.rx_list[i];
if (rxp->rx_mbuf != NULL) {
bus_dmamap_sync(sc->fxp_mtag, rxp->rx_map,
BUS_DMASYNC_POSTREAD);
bus_dmamap_unload(sc->fxp_mtag, rxp->rx_map);
m_freem(rxp->rx_mbuf);
}
bus_dmamap_destroy(sc->fxp_mtag, rxp->rx_map);
}
bus_dmamap_destroy(sc->fxp_mtag, sc->spare_map);
for (i = 0; i < FXP_NTXCB; i++) {
txp = &sc->fxp_desc.tx_list[i];
if (txp->tx_mbuf != NULL) {
bus_dmamap_sync(sc->fxp_mtag, txp->tx_map,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->fxp_mtag, txp->tx_map);
m_freem(txp->tx_mbuf);
}
bus_dmamap_destroy(sc->fxp_mtag, txp->tx_map);
}
bus_generic_detach(sc->dev);
if (sc->miibus)
device_delete_child(sc->dev, sc->miibus);
if (sc->ih)
bus_teardown_intr(sc->dev, sc->irq, sc->ih);
if (sc->fxp_desc.cbl_list) {
bus_dmamap_unload(sc->cbl_tag, sc->cbl_map);
bus_dmamem_free(sc->cbl_tag, sc->fxp_desc.cbl_list,
@ -844,16 +819,37 @@ fxp_release(struct fxp_softc *sc)
bus_dmamap_unload(sc->mcs_tag, sc->mcs_map);
bus_dmamem_free(sc->mcs_tag, sc->mcsp, sc->mcs_map);
}
if (sc->ih)
bus_teardown_intr(sc->dev, sc->irq, sc->ih);
if (sc->irq)
bus_release_resource(sc->dev, SYS_RES_IRQ, 0, sc->irq);
if (sc->mem)
bus_release_resource(sc->dev, sc->rtp, sc->rgd, sc->mem);
if (sc->fxp_mtag)
if (sc->fxp_mtag) {
for (i = 0; i < FXP_NRFABUFS; i++) {
rxp = &sc->fxp_desc.rx_list[i];
if (rxp->rx_mbuf != NULL) {
bus_dmamap_sync(sc->fxp_mtag, rxp->rx_map,
BUS_DMASYNC_POSTREAD);
bus_dmamap_unload(sc->fxp_mtag, rxp->rx_map);
m_freem(rxp->rx_mbuf);
}
bus_dmamap_destroy(sc->fxp_mtag, rxp->rx_map);
}
bus_dmamap_destroy(sc->fxp_mtag, sc->spare_map);
bus_dma_tag_destroy(sc->fxp_mtag);
if (sc->fxp_stag)
}
if (sc->fxp_stag) {
for (i = 0; i < FXP_NTXCB; i++) {
txp = &sc->fxp_desc.tx_list[i];
if (txp->tx_mbuf != NULL) {
bus_dmamap_sync(sc->fxp_mtag, txp->tx_map,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->fxp_mtag, txp->tx_map);
m_freem(txp->tx_mbuf);
}
bus_dmamap_destroy(sc->fxp_mtag, txp->tx_map);
}
bus_dma_tag_destroy(sc->fxp_stag);
}
if (sc->cbl_tag)
bus_dma_tag_destroy(sc->cbl_tag);
if (sc->mcs_tag)
@ -878,20 +874,23 @@ fxp_detach(device_t dev)
s = splimp();
/*
* Stop DMA and drop transmit queue.
*/
fxp_stop(sc);
/*
* Close down routes etc.
*/
ether_ifdetach(&sc->arpcom.ac_if);
/*
* Free all media structures.
*/
ifmedia_removeall(&sc->sc_media);
if (device_is_alive(dev)) {
/*
* Stop DMA and drop transmit queue.
*/
if (bus_child_present(dev))
fxp_stop(sc);
/*
* Close down routes etc.
*/
ether_ifdetach(&sc->arpcom.ac_if);
device_delete_child(dev, sc->miibus);
bus_generic_detach(dev);
/*
* Free all media structures.
*/
ifmedia_removeall(&sc->sc_media);
}
splx(s);
@ -2226,7 +2225,8 @@ fxp_add_rfabuf(struct fxp_softc *sc, struct fxp_rx *rxp)
rxp->rx_map = tmp_map;
rxp->rx_mbuf = m;
bus_dmamap_sync(sc->fxp_mtag, rxp->rx_map, BUS_DMASYNC_PREWRITE);
bus_dmamap_sync(sc->fxp_mtag, rxp->rx_map,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
/*
* If there are other buffers already on the list, attach this