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[src/trunk]: src/sys/arch/sparc64 sun4v: add cbus driver - from OpenBSD
details: https://anonhg.NetBSD.org/src/rev/7f6d15abdbe8
branches: trunk
changeset: 346074:7f6d15abdbe8
user: palle <palle%NetBSD.org@localhost>
date: Wed Jun 22 20:12:59 2016 +0000
description:
sun4v: add cbus driver - from OpenBSD
diffstat:
sys/arch/sparc64/conf/GENERIC | 5 +-
sys/arch/sparc64/conf/files.sparc64 | 6 +-
sys/arch/sparc64/dev/cbus.c | 314 ++++++++++++++++++++++++++++++++++++
sys/arch/sparc64/dev/cbusvar.h | 42 ++++
sys/arch/sparc64/include/cpu.h | 4 +-
sys/arch/sparc64/include/mdesc.h | 9 +-
6 files changed, 375 insertions(+), 5 deletions(-)
diffs (truncated from 469 to 300 lines):
diff -r 6d6659137483 -r 7f6d15abdbe8 sys/arch/sparc64/conf/GENERIC
--- a/sys/arch/sparc64/conf/GENERIC Wed Jun 22 15:01:38 2016 +0000
+++ b/sys/arch/sparc64/conf/GENERIC Wed Jun 22 20:12:59 2016 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: GENERIC,v 1.190 2016/06/17 21:38:09 palle Exp $
+# $NetBSD: GENERIC,v 1.191 2016/06/22 20:12:59 palle Exp $
#
# GENERIC machine description file
#
@@ -22,7 +22,7 @@
options INCLUDE_CONFIG_FILE # embed config file in kernel binary
-#ident "GENERIC-$Revision: 1.190 $"
+#ident "GENERIC-$Revision: 1.191 $"
maxusers 64
@@ -248,6 +248,7 @@
# XXX 'puc's aren't really bridges, but there's no better place for them here
puc* at pci? dev ? function ? # PCI "universal" comm. cards
vbus0 at mainbus0
+cbus* at vbus?
#### Standard system devices -- all required for a given architecture
diff -r 6d6659137483 -r 7f6d15abdbe8 sys/arch/sparc64/conf/files.sparc64
--- a/sys/arch/sparc64/conf/files.sparc64 Wed Jun 22 15:01:38 2016 +0000
+++ b/sys/arch/sparc64/conf/files.sparc64 Wed Jun 22 20:12:59 2016 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: files.sparc64,v 1.150 2016/06/17 21:38:09 palle Exp $
+# $NetBSD: files.sparc64,v 1.151 2016/06/22 20:12:59 palle Exp $
# @(#)files.sparc64 8.1 (Berkeley) 7/19/93
# sparc64-specific configuration info
@@ -73,6 +73,10 @@
attach vbus at mainbus
file arch/sparc64/dev/vbus.c vbus
+device cbus {}
+attach cbus at vbus
+file arch/sparc64/dev/cbus.c cbus
+
device clock: mk48txx
attach clock at sbus with mkclock_sbus
attach clock at ebus with mkclock_ebus
diff -r 6d6659137483 -r 7f6d15abdbe8 sys/arch/sparc64/dev/cbus.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/sparc64/dev/cbus.c Wed Jun 22 20:12:59 2016 +0000
@@ -0,0 +1,314 @@
+/* $NetBSD: cbus.c,v 1.1 2016/06/22 20:13:51 palle Exp $ */
+/* $OpenBSD: cbus.c,v 1.15 2015/09/27 11:29:20 kettenis Exp $ */
+/*
+ * Copyright (c) 2008 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/malloc.h>
+#include <sys/systm.h>
+
+#include <machine/autoconf.h>
+#include <machine/hypervisor.h>
+#include <machine/openfirm.h>
+#include <machine/mdesc.h>
+
+#include <sparc64/dev/cbusvar.h>
+#include <sparc64/dev/vbusvar.h>
+
+#include <sparc64/dev/iommureg.h>
+
+#ifdef DEBUG
+#define CBUSDB_AC 0x01
+#define CBUSDB_INTR 0x02
+int cbus_debug = 0x00|CBUSDB_INTR;
+#define DPRINTF(l, s) do { if (cbus_debug & l) printf s; } while (0)
+#else
+#define DPRINTF(l, s)
+#endif
+
+struct cbus_softc {
+ device_t sc_dv;
+ bus_space_tag_t sc_bustag;
+ bus_dma_tag_t sc_dmatag;
+
+ uint64_t sc_devhandle;
+
+ /* Machine description. */
+ int sc_idx;
+};
+
+int cbus_match(device_t, cfdata_t, void *);
+void cbus_attach(device_t, device_t, void *);
+int cbus_print(void *, const char *);
+
+CFATTACH_DECL_NEW(cbus, sizeof(struct cbus_softc),
+ cbus_match, cbus_attach, NULL, NULL);
+
+
+void *cbus_intr_establish(bus_space_tag_t, int, int,
+ int (*)(void *), void *, void (*)(void));
+void cbus_intr_ack(struct intrhand *);
+bus_space_tag_t cbus_alloc_bus_tag(struct cbus_softc *, bus_space_tag_t);
+
+int cbus_get_channel_endpoint(struct cbus_softc *,
+ struct cbus_attach_args *);
+
+int
+cbus_match(device_t parent, cfdata_t match, void *aux)
+{
+ struct vbus_attach_args *va = aux;
+
+ if (strcmp(va->va_name, "channel-devices") == 0)
+ return (1);
+
+ return (0);
+}
+
+void
+cbus_attach(device_t parent, device_t self, void *aux)
+{
+ struct cbus_softc *sc = device_private(self);
+ struct vbus_attach_args *va = aux;
+ int node;
+ int reg;
+
+ sc->sc_bustag = cbus_alloc_bus_tag(sc, va->va_bustag);
+ sc->sc_dmatag = va->va_dmatag;
+
+ if (OF_getprop(va->va_node, "reg", ®, sizeof(reg)) != sizeof(reg))
+ return;
+ sc->sc_devhandle = reg;
+
+ printf("\n");
+
+ sc->sc_idx = mdesc_find(va->va_name, va->va_reg[0]);
+ if (sc->sc_idx == -1) {
+ DPRINTF(CBUSDB_AC, ("cbus_attach() - no idx\n"));
+ return;
+ }
+
+ for (node = OF_child(va->va_node); node; node = OF_peer(node)) {
+ struct cbus_attach_args ca;
+ char buf[32];
+
+ bzero(&ca, sizeof(ca));
+ ca.ca_node = node;
+ if (OF_getprop(node, "name", buf, sizeof(buf)) <= 0)
+ continue;
+ DPRINTF(CBUSDB_AC, ("cbus_attach() - buf %s\n", buf));
+ ca.ca_name = buf;
+ ca.ca_bustag = sc->sc_bustag;
+ ca.ca_dmatag = sc->sc_dmatag;
+ prom_getprop(node, "reg", sizeof(*ca.ca_reg),
+ &ca.ca_nreg, (void **)&ca.ca_reg);
+ int rc = cbus_get_channel_endpoint(sc, &ca);
+ DPRINTF(CBUSDB_AC, ("cbus_attach() - cbus_get_channel_endpoint() %d\n", rc));
+ if ( rc != 0) {
+ continue;
+ }
+
+ config_found(self, &ca, cbus_print);
+
+ }
+}
+
+int
+cbus_print(void *aux, const char *name)
+{
+ struct cbus_attach_args *ca = aux;
+ DPRINTF(CBUSDB_AC, ("cbus_print() name %s\n", name));
+
+ if (name)
+ printf("\"%s\" at %s", ca->ca_name, name);
+ if (ca->ca_id != -1)
+ printf(" chan 0x%llx", (long long unsigned int)ca->ca_id);
+ return (UNCONF);
+}
+
+int
+cbus_intr_setstate(bus_space_tag_t t, uint64_t devino, uint64_t state)
+{
+ struct cbus_softc *sc = t->cookie;
+ uint64_t devhandle = sc->sc_devhandle;
+ int err;
+
+ err = hv_vintr_setstate(devhandle, devino, state);
+ if (err != H_EOK)
+ return (-1);
+
+ return (0);
+}
+
+int
+cbus_intr_setenabled(bus_space_tag_t t, uint64_t devino, uint64_t enabled)
+{
+ struct cbus_softc *sc = t->cookie;
+ uint64_t devhandle = sc->sc_devhandle;
+ int err;
+
+ err = hv_vintr_setenabled(devhandle, devino, enabled);
+ if (err != H_EOK)
+ return (-1);
+
+ return (0);
+}
+
+void *
+cbus_intr_establish(bus_space_tag_t t, int ihandle, int level,
+ int (*handler)(void *), void *arg, void (*fastvec)(void) /* ignored */)
+{
+ struct cbus_softc *sc = t->cookie;
+ uint64_t devhandle = sc->sc_devhandle;
+ uint64_t devino = ihandle;
+ struct intrhand *ih;
+ int ino;
+ int err;
+
+ ino = INTINO(ihandle);
+
+ DPRINTF(CBUSDB_INTR, ("cbus_intr_establish(): ino 0x%x\n", ino));
+
+ ih = intrhand_alloc();
+
+ ih->ih_ivec = ihandle;
+ ih->ih_fun = handler;
+ ih->ih_arg = arg;
+ ih->ih_pil = level;
+ ih->ih_number = ino;
+ ih->ih_bus = t;
+
+ err = hv_vintr_setenabled(devhandle, devino, INTR_DISABLED);
+ if (err != H_EOK) {
+ printf("hv_vintr_setenabled: %d\n", err);
+ return (NULL);
+ }
+
+ err = hv_vintr_setcookie(devhandle, devino, (vaddr_t)ih);
+ if (err != H_EOK) {
+ printf("hv_vintr_setcookie: %d\n", err);
+ return (NULL);
+ }
+
+ ih->ih_ack = cbus_intr_ack;
+
+ err = hv_vintr_settarget(devhandle, devino, cpus->ci_cpuid);
+ if (err != H_EOK) {
+ printf("hv_vintr_settarget: %d\n", err);
+ return (NULL);
+ }
+
+ /* Clear pending interrupts. */
+ err = hv_vintr_setstate(devhandle, devino, INTR_IDLE);
+ if (err != H_EOK) {
+ printf("hv_vintr_setstate: %d\n", err);
+ return (NULL);
+ }
+
+ return (ih);
+}
+
+void
+cbus_intr_ack(struct intrhand *ih)
+{
+ DPRINTF(CBUSDB_INTR, ("cbus_intr_ack()\n"));
+ bus_space_tag_t t = ih->ih_bus;
+ struct cbus_softc *sc = t->cookie;
+ uint64_t devhandle = sc->sc_devhandle;
+ uint64_t devino = ih->ih_number;
+
+ hv_vintr_setstate(devhandle, devino, INTR_IDLE);
+}
+
+bus_space_tag_t
+cbus_alloc_bus_tag(struct cbus_softc *sc, bus_space_tag_t parent)
+{
+ struct sparc_bus_space_tag *bt;
+
+ bt = malloc(sizeof(*bt), M_DEVBUF, M_NOWAIT | M_ZERO);
+ if (bt == NULL)
+ panic("could not allocate cbus bus tag");
+
+ bt->cookie = sc;
+ bt->parent = parent;
+ bt->sparc_bus_map = parent->sparc_bus_map;
+ bt->sparc_intr_establish = cbus_intr_establish;
+
+ return (bt);
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