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[src/trunk]: src/sys/dev/sbus frontend driver for the 16 port serial card by ...
details: https://anonhg.NetBSD.org/src/rev/51abbb16b547
branches: trunk
changeset: 515710:51abbb16b547
user: mrg <mrg%NetBSD.org@localhost>
date: Wed Oct 03 04:28:41 2001 +0000
description:
frontend driver for the 16 port serial card by aurora technologies. this
doesn't quite work yet -- interrupt acknowledgement is hosed (and thus the
device keeps interrupting). uses the newly commited cd18xx backend.
diffstat:
sys/dev/sbus/files.sbus | 8 +-
sys/dev/sbus/sio16.c | 316 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 323 insertions(+), 1 deletions(-)
diffs (truncated from 342 to 300 lines):
diff -r e4347014a4d4 -r 51abbb16b547 sys/dev/sbus/files.sbus
--- a/sys/dev/sbus/files.sbus Wed Oct 03 04:25:29 2001 +0000
+++ b/sys/dev/sbus/files.sbus Wed Oct 03 04:28:41 2001 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: files.sbus,v 1.16 2000/12/08 17:29:12 martin Exp $
+# $NetBSD: files.sbus,v 1.17 2001/10/03 04:28:41 mrg Exp $
#
# Config file and device description for machine-independent SBUS code.
# Included by ports that need it.
@@ -79,6 +79,12 @@
attach mbpp at magma
file dev/sbus/magma.c magma | mtty | mbpp needs-flag
+device siosixteen { channel = -1 }
+attach siosixteen at sbus
+device clcd: tty, cd18xx
+attach clcd at siosixteen
+file dev/sbus/sio16.c siosixteen | clcd needs-flag
+
# STP4020 SBus to PCMCIA bridge (`nell' to her friends)
device nell: pcmciabus
attach nell at sbus
diff -r e4347014a4d4 -r 51abbb16b547 sys/dev/sbus/sio16.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/dev/sbus/sio16.c Wed Oct 03 04:28:41 2001 +0000
@@ -0,0 +1,316 @@
+/* $NetBSD: sio16.c,v 1.1 2001/10/03 04:28:42 mrg Exp $ */
+
+/*
+ * Copyright (c) 1998, 2001 Matthew R. Green
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * aurora technologies nova16 driver. this board is an sbus card with
+ * an external 16 port serial box. there are two cirrus logic cd180
+ * 8 port serial chips used in the implementation.
+ *
+ * thanks go to Oliver Aldulea <oli%morcov.bv.ro@localhost> for writing the
+ * linux driver of this that helped clear up a couple of issues.
+ */
+
+#include <sys/param.h>
+#include <sys/conf.h>
+#include <sys/device.h>
+#include <sys/systm.h>
+
+#include <machine/autoconf.h>
+#include <machine/conf.h>
+
+#include <dev/ic/cd18xxvar.h>
+#include <dev/ic/cd18xxreg.h>
+
+#include "ioconf.h"
+#include "locators.h"
+
+/* 1600se configuration register bits */
+#define SIO16_CONFIGREG_ENABLE_IO 8
+#define SIO16_CONFIGREG_ENABLE_IRQ 4
+
+/* 1600se interrupt ackknowledge register bytes */
+#define SIO16_MINT_ACK 1 /* modem interrupt acknowledge */
+#define SIO16_TINT_ACK 2 /* tx interrupt acknowledge */
+#define SIO16_RINT_ACK 3 /* rx interrupt acknowledge */
+
+/*
+ * device cfattach and cfdriver definitions, plus the routine we pass
+ * to the cd18xx code or interrupt acknowledgement.
+ */
+static int sio16_match __P((struct device *, struct cfdata *, void *));
+static void sio16_attach __P((struct device *, struct device *, void *));
+static u_char sio16_ackfunc(void *, int who);
+
+/*
+ * define the sio16 per-device softc.
+ */
+struct sio16_softc {
+ struct device sc_dev; /* must be first */
+ struct sbusdev sc_sd; /* for sbus drivers */
+
+ /* sbus information */
+ bus_space_tag_t sc_tag; /* bus tag for below */
+ bus_space_handle_t sc_configreg; /* configuration register */
+ bus_space_handle_t sc_reg[2]; /* cd180 register sets */
+ bus_space_handle_t sc_ack; /* interrupt acknowledgement */
+#define SIO16_1600SE 0x00000001
+
+ u_int sc_clk;
+
+ /* cd180 information */
+ int sc_ncd180;
+
+};
+
+struct cfattach siosixteen_ca = {
+ sizeof(struct sio16_softc), sio16_match, sio16_attach
+};
+
+struct sio16_attach_args {
+ bus_space_tag_t cd_tag;
+ bus_space_handle_t cd_handle;
+ u_char (*cd_ackfunc)(void *, int);
+ void *cd_ackfunc_arg;
+ u_int cd_osc;
+};
+
+/*
+ * device match routine: is there an sio16 present?
+ *
+ * note that we can not put "sio16" in the cfdriver, as this is an
+ * illegal name, so we have to hard code it here.
+ */
+#define SIO16_ROM_NAME "sio16"
+int
+sio16_match(parent, cf, aux)
+ struct device *parent;
+ struct cfdata *cf;
+ void *aux;
+{
+ struct sbus_attach_args *sa = aux;
+
+ /* does the prom think i'm an sio16? */
+ if (strcmp(SIO16_ROM_NAME, sa->sa_name) != 0)
+ return (0);
+
+ return (1);
+}
+
+/*
+ * device attach routine: go attach all sub devices.
+ */
+void
+sio16_attach(parent, self, aux)
+ struct device *parent, *self;
+ void *aux;
+{
+ struct sbus_attach_args *sa = aux;
+ struct sio16_softc *sc = (struct sio16_softc *)self;
+ bus_space_handle_t h;
+ char *mode, *model;
+ int i;
+
+ if (sa->sa_nreg != 4)
+ panic("sio16_attach: got %d registers intead of 4\n",
+ sa->sa_nreg);
+
+ /* copy our bus tag, we will need it */
+ sc->sc_tag = sa->sa_bustag;
+
+ /*
+ * sio16 has 4 register mappings. a single byte configuration
+ * register, 2 128 byte regions for the cd180 registers, and
+ * a 4 byte region for interrupt acknowledgement.
+ */
+ if (sbus_bus_map(sa->sa_bustag,
+ sa->sa_reg[0].sbr_slot,
+ sa->sa_reg[0].sbr_offset,
+ sa->sa_reg[0].sbr_size,
+ BUS_SPACE_MAP_LINEAR, 0, &h) != 0) {
+ printf("%s at sbus: can not map registers 0\n",
+ self->dv_xname);
+ return;
+ }
+ sc->sc_configreg = h;
+ if (sbus_bus_map(sa->sa_bustag,
+ sa->sa_reg[1].sbr_slot,
+ sa->sa_reg[1].sbr_offset,
+ sa->sa_reg[1].sbr_size,
+ BUS_SPACE_MAP_LINEAR, 0, &h) != 0) {
+ printf("%s at sbus: can not map registers 1\n",
+ self->dv_xname);
+ return;
+ }
+ sc->sc_reg[0] = h;
+ if (sbus_bus_map(sa->sa_bustag,
+ sa->sa_reg[2].sbr_slot,
+ sa->sa_reg[2].sbr_offset,
+ sa->sa_reg[2].sbr_size,
+ BUS_SPACE_MAP_LINEAR, 0, &h) != 0) {
+ printf("%s at sbus: can not map registers 2\n",
+ self->dv_xname);
+ return;
+ }
+ sc->sc_reg[1] = h;
+ if (sbus_bus_map(sa->sa_bustag,
+ sa->sa_reg[3].sbr_slot,
+ sa->sa_reg[3].sbr_offset,
+ sa->sa_reg[3].sbr_size,
+ BUS_SPACE_MAP_LINEAR, 0, &h) != 0) {
+ printf("%s at sbus: can not map registers 3\n",
+ self->dv_xname);
+ return;
+ }
+ sc->sc_ack = h;
+
+ mode = PROM_getpropstring(sa->sa_node, "mode");
+ if (mode)
+ printf(", %s mode", mode);
+
+ /* get the clock frequency */
+ sc->sc_clk = PROM_getpropint(sa->sa_node, "clk", 24000);
+
+ model = PROM_getpropstring(sa->sa_node, "model");
+ if (model == 0) {
+ printf(", no model property, bailing\n");
+ return;
+ }
+
+ /* are we an 1600se? */
+ if (strcmp(model, "1600se") == 0) {
+ printf(", 16 channels");
+ sc->sc_ncd180 = 2;
+ } else {
+ printf(", don't know model %s, bailing\n", model);
+ return;
+ }
+
+ /* set up our sbus connections */
+ sbus_establish(&sc->sc_sd, &sc->sc_dev);
+
+ /* establish interrupt channel */
+ (void)bus_intr_establish(sa->sa_bustag, sa->sa_pri, IPL_TTY, 0,
+ cd18xx_hardintr, sc);
+
+ /* reset the board, and turn on interrupts and I/O */
+ bus_space_write_1(sa->sa_bustag, sc->sc_configreg, 0, 0);
+ delay(100);
+ bus_space_write_1(sa->sa_bustag, sc->sc_configreg, 0,
+ SIO16_CONFIGREG_ENABLE_IO | SIO16_CONFIGREG_ENABLE_IRQ |
+ (((sa->sa_pri) & 0x0f) >> 2));
+ delay(10000);
+
+ printf("\n");
+
+ /* finally, configure the clcd's underneath */
+ for (i = 0; i < sc->sc_ncd180; i++) {
+ struct sio16_attach_args cd;
+
+ cd.cd_tag = sa->sa_bustag;
+ cd.cd_osc = sc->sc_clk * 100;
+ cd.cd_handle = (bus_space_handle_t)sc->sc_reg[i];
+ cd.cd_ackfunc = sio16_ackfunc;
+ cd.cd_ackfunc_arg = sc;
+ (void)config_found(self, (void *)&cd, NULL);
+ }
+}
+
+/*
+ * note that the addresses used in this function match those assigned
+ * in clcd_attach() below, or the various service match routines.
+ */
+u_char
+sio16_ackfunc(v, who)
+ void *v;
+ int who;
+{
+ struct sio16_softc *sc = v;
+ bus_size_t addr;
+
+ switch (who) {
+ case CD18xx_INTRACK_RxINT:
+ case CD18xx_INTRACK_REINT:
+ addr = SIO16_RINT_ACK;
+ break;
+ case CD18xx_INTRACK_TxINT:
+ addr = SIO16_TINT_ACK;
+ break;
+ case CD18xx_INTRACK_MxINT:
+ addr = SIO16_MINT_ACK;
+ break;
+ default:
+ panic("%s: sio16_ackfunc: unknown ackfunc %d",
+ sc->sc_dev.dv_xname, who);
+ }
+ return (bus_space_read_1(sc->sc_tag, sc->sc_ack, addr));
+}
+
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