First stab at a driver for the onboard Fast-Wide SCSI on the 735 and 755.

Only partly tested; works fine if there are no devices on the SCSI bus.

1 files changed, 162 insertions, 0 deletions

diff --git a/sys/arch/hppa/gsc/siop_gsc.c b/sys/arch/hppa/gsc/siop_gsc.c
new file mode 100644
index 00000000000..3c54c8bbba5
--- /dev/null
+++ b/sys/arch/hppa/gsc/siop_gsc.c
@@ -0,0 +1,162 @@
+/*	$OpenBSD: siop_gsc.c,v 1.4 2007/08/23 21:01:22 kettenis Exp $	*/
+
+/*
+ * Copyright (c) 2007 Mark Kettenis
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/param.h>
+#include <sys/device.h>
+#include <sys/systm.h>
+
+#include <machine/autoconf.h>
+#include <machine/bus.h>
+#include <machine/iomod.h>
+
+#include <scsi/scsi_all.h>
+#include <scsi/scsiconf.h>
+
+#include <dev/ic/siopreg.h>
+#include <dev/ic/siopvar_common.h>
+#include <dev/ic/siopvar.h>
+
+#include <hppa/dev/cpudevs.h>
+#include <hppa/gsc/gscbusvar.h>
+
+#define	SIOP_GSC_RESET	0x0000
+#define	SIOP_GSC_OFFSET	0x0100
+
+int siop_gsc_match(struct device *, void *, void *);
+void siop_gsc_attach(struct device *, struct device *, void *);
+int siop_gsc_intr(void *);
+void siop_gsc_reset(struct siop_common_softc *);
+
+u_int8_t siop_gsc_r1(void *, bus_space_handle_t, bus_size_t);
+u_int16_t siop_gsc_r2(void *, bus_space_handle_t, bus_size_t);
+void siop_gsc_w1(void *, bus_space_handle_t, bus_size_t, u_int8_t);
+void siop_gsc_w2(void *, bus_space_handle_t, bus_size_t, u_int16_t);
+
+struct siop_gsc_softc {
+	struct siop_softc sc_siop;
+	bus_space_tag_t sc_iot;
+	bus_space_handle_t sc_ioh;
+	struct hppa_bus_space_tag sc_bustag;
+};
+
+struct cfattach siop_gsc_ca = {
+	sizeof(struct siop_gsc_softc), siop_gsc_match, siop_gsc_attach
+};
+
+int
+siop_gsc_match(struct device *parent, void *match, void *aux)
+{
+	struct gsc_attach_args *ga = aux;
+
+	if (ga->ga_type.iodc_type != HPPA_TYPE_FIO ||
+	    ga->ga_type.iodc_sv_model != HPPA_FIO_FWSCSI)
+		return 0;
+
+	return 1;
+}
+
+void
+siop_gsc_attach(struct device *parent, struct device *self, void *aux)
+{
+	struct siop_gsc_softc *sc = (struct siop_gsc_softc *)self;
+	struct gsc_attach_args *ga = aux;
+
+	sc->sc_iot = ga->ga_iot;
+	if (bus_space_map(sc->sc_iot, ga->ga_hpa,
+	    IOMOD_HPASIZE, 0, &sc->sc_ioh)) {
+		printf(": cannot map io space\n");
+		return;
+	}
+
+	sc->sc_bustag = *sc->sc_iot;
+	sc->sc_bustag.hbt_r1 = siop_gsc_r1;
+	sc->sc_bustag.hbt_r2 = siop_gsc_r2;
+	sc->sc_bustag.hbt_w1 = siop_gsc_w1;
+	sc->sc_bustag.hbt_w2 = siop_gsc_w2;
+
+	sc->sc_siop.sc_c.features = SF_CHIP_PF | SF_CHIP_BE | SF_BUS_WIDE;
+	sc->sc_siop.sc_c.maxburst = 4;
+	sc->sc_siop.sc_c.maxoff = 8;
+	sc->sc_siop.sc_c.clock_div = 3;
+	sc->sc_siop.sc_c.clock_period = 250;
+	sc->sc_siop.sc_c.ram_size = 0;
+
+	sc->sc_siop.sc_c.sc_reset = siop_gsc_reset;
+	sc->sc_siop.sc_c.sc_dmat = ga->ga_dmatag;
+
+	sc->sc_siop.sc_c.sc_rt = &sc->sc_bustag;
+	bus_space_subregion(sc->sc_iot, sc->sc_ioh, SIOP_GSC_OFFSET,
+	    IOMOD_HPASIZE - SIOP_GSC_OFFSET, &sc->sc_siop.sc_c.sc_rh);
+
+	/*
+	 * Reset the SCSI subsystem.
+	 */
+	bus_space_write_1(sc->sc_iot, sc->sc_ioh, SIOP_GSC_RESET, 0);
+	DELAY(1000);
+	siop_gsc_reset(&sc->sc_siop.sc_c);
+
+	gsc_intr_establish((struct gsc_softc *)parent, ga->ga_irq,
+	    IPL_BIO, siop_intr, sc, sc->sc_siop.sc_c.sc_dev.dv_xname);
+
+	printf(": NCR53C720 rev %d\n", bus_space_read_1(sc->sc_siop.sc_c.sc_rt,
+	    sc->sc_siop.sc_c.sc_rh, SIOP_CTEST3) >> 4);
+
+	siop_attach(&sc->sc_siop);
+}
+
+void
+siop_gsc_reset(struct siop_common_softc *sc)
+{
+	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_DCNTL, DCNTL_EA);
+	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST0, CTEST0_EHP);
+	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST4, CTEST4_MUX);
+
+	bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STIME0,
+	    (0xc << STIME0_SEL_SHIFT));
+}
+
+u_int8_t
+siop_gsc_r1(void *v, bus_space_handle_t h, bus_size_t o)
+{
+	return *(volatile u_int8_t *)(h + (o ^ 3));
+}
+
+u_int16_t
+siop_gsc_r2(void *v, bus_space_handle_t h, bus_size_t o)
+{
+	if (o == SIOP_SIST0) {
+		u_int16_t reg;
+
+		reg = siop_gsc_r1(v, h, SIOP_SIST0);
+		reg |= siop_gsc_r1(v, h, SIOP_SIST1) << 8;
+		return reg;
+	}
+	return *(volatile u_int16_t *)(h + (o ^ 2));
+}
+
+void
+siop_gsc_w1(void *v, bus_space_handle_t h, bus_size_t o, u_int8_t vv)
+{
+	*(volatile u_int8_t *)(h + (o ^ 3)) = vv;
+}
+
+void
+siop_gsc_w2(void *v, bus_space_handle_t h, bus_size_t o, u_int16_t vv)
+{
+	*(volatile u_int16_t *)(h + (o ^ 2)) = vv;
+}