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| author | adrian <adrian@FreeBSD.org> | 2012-07-27 10:41:54 +0000 |
|---|---|---|
| committer | adrian <adrian@FreeBSD.org> | 2012-07-27 10:41:54 +0000 |
| commit | 99b2311120477843dccf7372aac20a2f112f929a (patch) | |
| tree | 0935af903c4496b35497003dd742e4d1ac95defe /sys/dev/ath/if_ath_tx_edma.c | |
| parent | 4e7839007ab707452aab4262d6fee9846bb28767 (diff) | |
| download | FreeBSD-src-99b2311120477843dccf7372aac20a2f112f929a.zip FreeBSD-src-99b2311120477843dccf7372aac20a2f112f929a.tar.gz | |
Allocate a descriptor ring for EDMA TX completion status.
Configure the hardware with said ring physical address and size.
Diffstat (limited to 'sys/dev/ath/if_ath_tx_edma.c')
| -rw-r--r-- | sys/dev/ath/if_ath_tx_edma.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/sys/dev/ath/if_ath_tx_edma.c b/sys/dev/ath/if_ath_tx_edma.c index c5db404..c4dc384 100644 --- a/sys/dev/ath/if_ath_tx_edma.c +++ b/sys/dev/ath/if_ath_tx_edma.c @@ -119,17 +119,33 @@ __FBSDID("$FreeBSD$"); /* * some general macros - */ + */ #define INCR(_l, _sz) (_l) ++; (_l) &= ((_sz) - 1) #define DECR(_l, _sz) (_l) --; (_l) &= ((_sz) - 1) +/* + * XXX doesn't belong here, and should be tunable + */ +#define ATH_TXSTATUS_RING_SIZE 512 + MALLOC_DECLARE(M_ATHDEV); static int ath_edma_dma_txsetup(struct ath_softc *sc) { + int error; + + error = ath_descdma_alloc_desc(sc, &sc->sc_txsdma, + NULL, "txcomp", sc->sc_tx_statuslen, ATH_TXSTATUS_RING_SIZE); + if (error != 0) + return (error); + + ath_hal_setuptxstatusring(sc->sc_ah, + (void *) sc->sc_txsdma.dd_desc, + sc->sc_txsdma.dd_desc_paddr, + ATH_TXSTATUS_RING_SIZE); + - /* XXX placeholder */ return (0); } @@ -137,7 +153,7 @@ static int ath_edma_dma_txteardown(struct ath_softc *sc) { - /* XXX placeholder */ + ath_descdma_cleanup(sc, &sc->sc_txsdma, NULL); return (0); } |
