Cross Reference: /src/sys/dev/ic/sunscpal.c

Lines Matching defs:phase
56  * Gordon Ross integrated the message phase code, added lots of
125 #define ACT_CONTINUE	0x00	/* No flags: expect another phase */
195 /* This one is used when waiting for a phase change. (X100uS.) */
416 /* Ask the target for a MSG_OUT phase. */
431 sunscpal_pio_out(struct sunscpal_softc *sc, int phase, int count, uint8_t *data)
446 		    phase)
451 			SUNSCPAL_BYTE_WRITE(sc, phase, *data++);
453 			SUNSCPAL_BYTE_WRITE(sc, phase, 0);
464 sunscpal_pio_in(struct sunscpal_softc *sc, int phase, int count, uint8_t *data)
478 		/* A phase change is not valid until AFTER REQ rises! */
480 		    phase)
485 			*data++ = SUNSCPAL_BYTE_READ(sc, phase);
487 			(void)SUNSCPAL_BYTE_READ(sc, phase);
1087 	 * Device reset is special (only uses MSG_OUT phase).
1088 	 * Normal commands start in MSG_OUT phase where we will
1089 	 * send and IDENDIFY message, and then expect CMD phase.
1126 	 * at the beginning of COMMAND phase.
1130 	 * the SCSI bus into any DATA phase.
1252  * Functions to handle each info. transfer phase:
1285  * The SCSI bus is already in the MSGI phase and there is a message byte
1289  * will expect to see another REQ (and possibly phase change).
1296 	int n, phase;
1308 	/* This is a new MESSAGE IN phase.  Clean up our state. */
1318 	 * message, we have to assert ATN during the message transfer phase
1324 		 * First, check BSY, REQ, phase...
1337 		phase = SUNSCPAL_BUS_PHASE(SUNSCPAL_READ_2(sc, sunscpal_icr));
1338 		if (phase != SUNSCPAL_PHASE_MSG_IN) {
1346 		/* Still in MESSAGE IN phase, and REQ is asserted. */
1485  * having changed phase in between it really asks for a
1507 	 * the target (the bus will never enter this MSG_OUT phase).
1513 	printf("%s: bus is in MSG_OUT phase?\n", __func__);
1518  * Handle command phase.
1528 	/* XXX: Do this using DMA, and get a phase change intr? */
1555 sunscpal_data_xfer(struct sunscpal_softc *sc, int phase)
1563 	 * When aborting a command, disallow any data phase.
1566 		printf("%s: aborting, bus phase=%s (reset)\n",
1567 		    device_xname(sc->sc_dev), phase_names[(phase >> 8) & 7]);
1571 	/* Validate expected phase (data_in or data_out) */
1574 	if (phase != expected_phase) {
1575 		printf("%s: data phase error\n", device_xname(sc->sc_dev));
1582 		if (phase == SUNSCPAL_PHASE_DATA_IN)
1583 			sunscpal_pio_in(sc, phase, 4096, NULL);
1585 			sunscpal_pio_out(sc, phase, 4096, NULL);
1586 		/* Make sure that caused a phase change. */
1588 		    phase) {
1605 		 * (Acknowledge the phase change there, not here.)
1618 	if (phase == SUNSCPAL_PHASE_DATA_OUT) {
1619 		len = sunscpal_pio_out(sc, phase,
1622 		len = sunscpal_pio_in(sc, phase,
1657  * This is the big state machine that follows SCSI phase changes.
1670 	int act_flags, phase, timo;
1704 	 * Wait for REQ before reading the phase.
1719 			printf("%s: no REQ for next phase, abort\n",
1728 	phase = SUNSCPAL_BUS_PHASE(SUNSCPAL_READ_2(sc, sunscpal_icr));
1729 	SUNSCPAL_TRACE("machine: phase=%s\n",
1730 	    (long)phase_names[(phase >> 8) & 7]);
1734 	 * so any phase is good.
1737 	switch (phase) {
1741 		act_flags = sunscpal_data_xfer(sc, phase);
1761 		printf("%s: Unexpected phase 0x%x\n", __func__, phase);
1767 	sc->sc_prevphase = phase;
2214  * This function is called during the SELECT phase that
2215  * precedes a COMMAND phase, in case we need to setup the
2216  * DMA engine before the bus enters a DATA phase.
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