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-rw-r--r--sys/arch/i386/conf/files.i3867
-rw-r--r--sys/arch/i386/pci/gscpm.c179
-rw-r--r--sys/arch/i386/pci/gscpmreg.h51
3 files changed, 236 insertions, 1 deletions
diff --git a/sys/arch/i386/conf/files.i386 b/sys/arch/i386/conf/files.i386
index 2009ce890b3..0481c851ddb 100644
--- a/sys/arch/i386/conf/files.i386
+++ b/sys/arch/i386/conf/files.i386
@@ -1,4 +1,4 @@
-# $OpenBSD: files.i386,v 1.126 2004/07/14 05:34:14 tedu Exp $
+# $OpenBSD: files.i386,v 1.127 2004/09/15 20:28:53 grange Exp $
#
# new style config file for i386 architecture
#
@@ -123,6 +123,11 @@ device geodesc
attach geodesc at pci
file arch/i386/pci/geodesc.c geodesc
+# National Semiconductor Geode SC1100 SMI/ACPI module
+device gscpm
+attach gscpm at pci
+file arch/i386/pci/gscpm.c gscpm
+
# PCI-ISA bridge chipsets
device pcib: isabus
attach pcib at pci
diff --git a/sys/arch/i386/pci/gscpm.c b/sys/arch/i386/pci/gscpm.c
new file mode 100644
index 00000000000..4156dbfbc95
--- /dev/null
+++ b/sys/arch/i386/pci/gscpm.c
@@ -0,0 +1,179 @@
+/* $OpenBSD: gscpm.c,v 1.1 2004/09/15 20:28:53 grange Exp $ */
+/*
+ * Copyright (c) 2004 Alexander Yurchenko <grange@openbsd.org>
+ *
+ * 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.
+ */
+
+/*
+ * National Semiconductor Geode SC1100 SMI/ACPI module.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/kernel.h>
+#include <sys/sysctl.h>
+#ifdef __HAVE_TIMECOUNTER
+#include <sys/timetc.h>
+#endif
+
+#include <machine/bus.h>
+
+#include <dev/pci/pcidevs.h>
+#include <dev/pci/pcireg.h>
+#include <dev/pci/pcivar.h>
+
+#include <i386/pci/gscpmreg.h>
+
+struct gscpm_softc {
+ struct device sc_dev;
+
+ pci_chipset_tag_t sc_pc;
+ pcitag_t sc_tag;
+ bus_space_tag_t sc_iot;
+ bus_space_handle_t sc_acpi_ioh;
+};
+
+int gscpm_match(struct device *, void *, void *);
+void gscpm_attach(struct device *, struct device *, void *);
+
+int gscpm_setperf(int);
+
+#ifdef __HAVE_TIMECOUNTER
+u_int gscpm_get_timecount(struct timecounter *tc);
+
+struct timecounter gscpm_timecounter = {
+ gscpm_get_timecount, /* get_timecount */
+ 0, /* no poll_pps */
+ 0xffffff, /* counter_mask */
+ 14318180 / 4, /* frequency */
+ "Geode SC1100", /* name */
+ 1000 /* quality */
+};
+#endif /* __HAVE_TIMECOUNTER */
+
+struct cfattach gscpm_ca = {
+ sizeof (struct gscpm_softc),
+ gscpm_match,
+ gscpm_attach
+};
+
+struct cfdriver gscpm_cd = {
+ NULL, "gscpm", DV_DULL
+};
+
+#if 0
+static void *gscpm_cookie; /* XXX */
+#endif
+
+int
+gscpm_match(struct device *parent, void *match, void *aux)
+{
+ struct pci_attach_args *pa = aux;
+
+ if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_NS &&
+ PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_NS_SC1100_SMI)
+ return (1);
+
+ return (0);
+}
+
+void
+gscpm_attach(struct device *parent, struct device *self, void *aux)
+{
+ struct gscpm_softc *sc = (struct gscpm_softc *)self;
+ struct pci_attach_args *pa = aux;
+ pcireg_t csr, acpibase;
+
+ sc->sc_pc = pa->pa_pc;
+ sc->sc_tag = pa->pa_tag;
+ sc->sc_iot = pa->pa_iot;
+
+ /* Enable I/O space */
+ csr = pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_COMMAND_STATUS_REG);
+ pci_conf_write(sc->sc_pc, sc->sc_tag, PCI_COMMAND_STATUS_REG,
+ csr | PCI_COMMAND_IO_ENABLE);
+
+ /* Map ACPI registers */
+ acpibase = pci_conf_read(sc->sc_pc, sc->sc_tag, GSCPM_ACPIBASE);
+ if (bus_space_map(sc->sc_iot, PCI_MAPREG_IO_ADDR(acpibase),
+ GSCPM_ACPISIZE, 0, &sc->sc_acpi_ioh)) {
+ printf(": failed to map ACPI registers\n");
+ return;
+ }
+
+ printf("\n");
+
+#ifdef __HAVE_TIMECOUNTER
+ /* Hook into the kern_tc */
+ gscpm_timecounter.tc_priv = sc;
+ tc_init(&gscpm_timecounter);
+#endif /* __HAVE_TIMECOUNTER */
+
+/* XXX: disabled due to unresolved yet hardware errata */
+#if 0
+ /* Hook into the hw.setperf sysctl */
+ gscpm_cookie = sc;
+ cpu_setperf = gscpm_setperf;
+#endif
+
+}
+
+#ifdef __HAVE_TIMECOUNTER
+u_int
+gscpm_get_timecount(struct timecounter *tc)
+{
+ struct gscpm_softc *sc = tc->tc_priv;
+ u_int u1, u2, u3;
+
+ u2 = bus_space_read_4(sc->sc_iot, sc->sc_acpi_ioh, GSCPM_PM_TMR);
+ u3 = bus_space_read_4(sc->sc_iot, sc->sc_acpi_ioh, GSCPM_PM_TMR);
+ do {
+ u1 = u2;
+ u2 = u3;
+ u3 = bus_space_read_4(sc->sc_iot, sc->sc_acpi_ioh,
+ GSCPM_PM_TMR);
+ } while (u1 > u2 || u2 > u3);
+
+ return (u2);
+}
+#endif /* __HAVE_TIMECOUNTER */
+
+#if 0
+int
+gscpm_setperf(int level)
+{
+ struct gscpm_softc *sc = gscpm_cookie;
+ int i;
+ u_int32_t pctl;
+
+ pctl = bus_space_read_4(sc->sc_iot, sc->sc_acpi_ioh, GSCPM_P_CNT);
+
+ if (level == 100) {
+ /* 100 is a maximum perfomance, disable throttling */
+ pctl &= ~GSCPM_P_CNT_THTEN;
+ } else {
+ for (i = 0; i < GSCPM_THT_LEVELS; i++)
+ if (level >= gscpm_tht[i].level)
+ break;
+ pctl = (0xf0 | GSCPM_P_CNT_THTEN |
+ GSCPM_P_CNT_CLK(gscpm_tht[i].value));
+ }
+
+ /* Update processor control register */
+ bus_space_write_4(sc->sc_iot, sc->sc_acpi_ioh, GSCPM_P_CNT, pctl);
+
+ return (0);
+}
+#endif
diff --git a/sys/arch/i386/pci/gscpmreg.h b/sys/arch/i386/pci/gscpmreg.h
new file mode 100644
index 00000000000..4ee9b1a1b7d
--- /dev/null
+++ b/sys/arch/i386/pci/gscpmreg.h
@@ -0,0 +1,51 @@
+/* $OpenBSD: gscpmreg.h,v 1.1 2004/09/15 20:28:53 grange Exp $ */
+/*
+ * Copyright (c) 2004 Alexander Yurchenko <grange@openbsd.org>
+ *
+ * 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.
+ */
+
+#ifndef _DEV_PCI_GSCPMREG_H_
+#define _DEV_PCI_GSCPMREG_H_
+
+/*
+ * National Semiconductor Geode SC1100 SMI/ACPI module register definitions.
+ */
+
+/* PCI configuration space */
+#define GSCPM_ACPIBASE 0x40 /* ACPI I/O space base address */
+#define GSCPM_ACPISIZE 256 /* ACPI I/O space size */
+
+/* ACPI I/O space */
+#define GSCPM_P_CNT 0x00 /* processor control */
+#define GSCPM_P_CNT_CLK(val) ((val) & 0x7)
+#define GSCPM_P_CNT_THTEN (1 << 4) /* throttle enable */
+#define GSCPM_PM_TMR 0x1c /* PM timer */
+
+/* CPU throttling values */
+static const struct {
+ int level;
+ int value;
+} gscpm_tht[] = {
+ { 88, 1 },
+ { 75, 2 },
+ { 63, 3 },
+ { 50, 4 },
+ { 38, 5 },
+ { 25, 6 },
+ { 13, 7 }
+};
+
+#define GSCPM_THT_LEVELS (sizeof(gscpm_tht) / sizeof(gscpm_tht[0]))
+
+#endif /* !_DEV_PCI_GSCPMREG_H_ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-29 17:32:02 +0000