C++ (Cpp) dbdma_st32 Beispiele

Beispiel #1

Datei: if_bm.c Projekt: alenichev/openbsd-kernel

void
bmac_init_dma(struct bmac_softc *sc)
{
	dbdma_command_t *cmd = sc->sc_rxcmd;
	int i;

	dbdma_reset(sc->sc_txdma);
	dbdma_reset(sc->sc_rxdma);

	bzero(sc->sc_txcmd, BMAC_TXBUFS * sizeof(dbdma_command_t));
	bzero(sc->sc_rxcmd, (BMAC_RXBUFS + 1) * sizeof(dbdma_command_t));

	for (i = 0; i < BMAC_RXBUFS; i++) {
		DBDMA_BUILD(cmd, DBDMA_CMD_IN_LAST, 0, BMAC_BUFLEN,
			sc->sc_rxbuf_pa + BMAC_BUFLEN * i,
			DBDMA_INT_ALWAYS, DBDMA_WAIT_NEVER, DBDMA_BRANCH_NEVER);
		cmd++;
	}
	DBDMA_BUILD(cmd, DBDMA_CMD_NOP, 0, 0, 0,
		DBDMA_INT_NEVER, DBDMA_WAIT_NEVER, DBDMA_BRANCH_ALWAYS);
	dbdma_st32(&cmd->d_cmddep, sc->sc_rxdbdma->d_paddr);

	sc->sc_rxlast = 0;

	dbdma_start(sc->sc_rxdma, sc->sc_rxdbdma);
}

Beispiel #2

Datei: if_mc.c Projekt: bradla/OpenBSD-Hammer2

void
mc_reset_rxdma(struct mc_softc *sc)
{
	dbdma_command_t *cmd = sc->sc_rxdmacmd;
	int i;
	u_int8_t maccc;

	/* Disable receiver, reset the DMA channels */
	maccc = NIC_GET(sc, MACE_MACCC);
	NIC_PUT(sc, MACE_MACCC, maccc & ~ENRCV);

	dbdma_reset(sc->sc_rxdma);

	bzero(sc->sc_rxdmacmd, 8 * sizeof(dbdma_command_t));
	for (i = 0; i < MC_RXDMABUFS; i++) {
		DBDMA_BUILD(cmd, DBDMA_CMD_IN_LAST, 0, MACE_BUFLEN,
		    sc->sc_rxbuf_pa + MACE_BUFLEN * i, DBDMA_INT_ALWAYS,
		    DBDMA_WAIT_NEVER, DBDMA_BRANCH_NEVER);
		cmd++;
	}

	DBDMA_BUILD(cmd, DBDMA_CMD_NOP, 0, 0, 0,
	    DBDMA_INT_NEVER, DBDMA_WAIT_NEVER, DBDMA_BRANCH_ALWAYS);
	dbdma_st32(&cmd->d_cmddep, sc->sc_rxdbdma->d_paddr);
	cmd++;

	sc->sc_tail = 0;

	dbdma_start(sc->sc_rxdma, sc->sc_rxdbdma);
	/* Reenable receiver, reenable DMA */
	NIC_PUT(sc, MACE_MACCC, maccc);
}