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[src/trunk]: src/sys/arch/sparc64/dev experimental code to talk to the PMU fo...
details: https://anonhg.NetBSD.org/src/rev/426b57f80143
branches: trunk
changeset: 836336:426b57f80143
user: macallan <macallan%NetBSD.org@localhost>
date: Fri Oct 12 21:44:32 2018 +0000
description:
experimental code to talk to the PMU found in Tadpole Viper laptops
diffstat:
sys/arch/sparc64/dev/tadpmu.c | 261 +++++++++++++++++++++++++++++++++++++++
sys/arch/sparc64/dev/tadpmureg.h | 85 ++++++++++++
sys/arch/sparc64/dev/tadpmuvar.h | 36 +++++
3 files changed, 382 insertions(+), 0 deletions(-)
diffs (truncated from 396 to 300 lines):
diff -r 2d14deb07259 -r 426b57f80143 sys/arch/sparc64/dev/tadpmu.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/sparc64/dev/tadpmu.c Fri Oct 12 21:44:32 2018 +0000
@@ -0,0 +1,261 @@
+/*/* $NetBSD: tadpmu.c,v 1.1 2018/10/12 21:44:32 macallan Exp $ */
+
+/*-
+ * Copyright (c) 2018 Michael Lorenz <macallan%netbsd.org@localhost>
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``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 FOUNDATION OR CONTRIBUTORS
+ * 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.
+ */
+
+/* a driver for the PMU found in Tadpole Wiper and possibly SPARCle laptops */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/device.h>
+#include <sys/malloc.h>
+#include <sys/bus.h>
+#include <sys/intr.h>
+
+#include <dev/sysmon/sysmonvar.h>
+
+#include <sparc64/dev/tadpmureg.h>
+#include <sparc64/dev/tadpmuvar.h>
+
+static bus_space_tag_t tadpmu_iot;
+static bus_space_handle_t tadpmu_hcmd;
+static bus_space_handle_t tadpmu_hdata;
+static struct sysmon_envsys *tadpmu_sme;
+static envsys_data_t tadpmu_sensors[5];
+
+static inline void
+tadpmu_cmd(uint8_t d)
+{
+ bus_space_write_1(tadpmu_iot, tadpmu_hcmd, 0, d);
+}
+
+static inline void
+tadpmu_wdata(uint8_t d)
+{
+ bus_space_write_1(tadpmu_iot, tadpmu_hdata, 0, d);
+}
+
+static inline uint8_t
+tadpmu_status(void)
+{
+ return bus_space_read_1(tadpmu_iot, tadpmu_hcmd, 0);
+}
+
+static inline uint8_t
+tadpmu_data(void)
+{
+ return bus_space_read_1(tadpmu_iot, tadpmu_hdata, 0);
+}
+
+static void
+tadpmu_flush(void)
+{
+ volatile uint8_t junk, d;
+ int bail = 0;
+
+ d = tadpmu_status();
+ while (d & STATUS_HAVE_DATA) {
+ junk = tadpmu_data();
+ __USE(junk);
+ delay(10);
+ bail++;
+ if (bail > 100) {
+ printf("%s: timeout waiting for data out to clear %2x\n",
+ __func__, d);
+ break;
+ }
+ d = tadpmu_status();
+ }
+ bail = 0;
+ d = tadpmu_status();
+ while (d & STATUS_SEND_DATA) {
+ bus_space_write_1(tadpmu_iot, tadpmu_hdata, 0, 0);
+ delay(10);
+ bail++;
+ if (bail > 100) {
+ printf("%s: timeout waiting for data in to clear %02x\n",
+ __func__, d);
+ break;
+ }
+ d = tadpmu_status();
+ }
+}
+
+static void
+tadpmu_send_cmd(uint8_t cmd)
+{
+ int bail = 0;
+ uint8_t d;
+
+ tadpmu_cmd(cmd);
+
+ d = tadpmu_status();
+ while ((d & STATUS_CMD_IN_PROGRESS) == 0) {
+ delay(10);
+ bail++;
+ if (bail > 100) {
+ printf("%s: timeout waiting for command to start\n",
+ __func__);
+ break;
+ }
+ d = tadpmu_status();
+ }
+}
+
+static uint8_t
+tadpmu_recv(void)
+{
+ int bail = 0;
+ uint8_t d;
+
+ d = tadpmu_status();
+ while ((d & STATUS_HAVE_DATA) == 0) {
+ delay(10);
+ bail++;
+ if (bail > 1000) {
+ printf("%s: timeout waiting for data %02x\n", __func__, d);
+ break;
+ }
+ d = tadpmu_status();
+ }
+ return bus_space_read_1(tadpmu_iot, tadpmu_hdata, 0);
+}
+
+static void
+tadpmu_send(uint8_t v)
+{
+ int bail = 0;
+ uint8_t d;
+
+ d = tadpmu_status();
+ while ((d & STATUS_SEND_DATA) == 0) {
+ delay(10);
+ bail++;
+ if (bail > 1000) {
+ printf("%s: timeout waiting for PMU ready %02x\n", __func__, d);
+ break;
+ }
+ d = tadpmu_status();
+ }
+
+ tadpmu_wdata(v);
+
+ while ((d & STATUS_SEND_DATA) != 0) {
+ delay(10);
+ bail++;
+ if (bail > 1000) {
+ printf("%s: timeout waiting for accept data %02x\n", __func__, d);
+ break;
+ }
+ d = tadpmu_status();
+ }
+}
+
+static void
+tadpmu_sensors_refresh(struct sysmon_envsys *sme, envsys_data_t *edata)
+{
+ int res;
+ if (edata->private > 0) {
+ tadpmu_flush();
+ tadpmu_send_cmd(edata->private);
+ res = tadpmu_recv();
+ if (edata->units == ENVSYS_STEMP) {
+ edata->value_cur = res * 1000000 + 273150000;
+ } else {
+ edata->value_cur = res;
+ }
+ edata->state = ENVSYS_SVALID;
+ } else {
+ edata->state = ENVSYS_SINVALID;
+ }
+}
+
+int
+tadpmu_init(bus_space_tag_t t, bus_space_handle_t hcmd, bus_space_handle_t hdata)
+{
+ int ver;
+
+ tadpmu_iot = t;
+ tadpmu_hcmd = hcmd;
+ tadpmu_hdata = hdata;
+
+ tadpmu_flush();
+ delay(1000);
+
+ tadpmu_send_cmd(CMD_READ_VERSION);
+ ver = tadpmu_recv();
+ printf("Tadpole PMU Version 1.%d\n", ver);
+
+ tadpmu_send_cmd(CMD_SET_OPMODE);
+ tadpmu_send(0x75);
+
+ tadpmu_send_cmd(CMD_READ_SYSTEMP);
+ ver = tadpmu_recv();
+ printf("Temperature %d\n", ver);
+
+ tadpmu_send_cmd(CMD_READ_VBATT);
+ ver = tadpmu_recv();
+ printf("Battery voltage %d\n", ver);
+
+ tadpmu_send_cmd(CMD_READ_GENSTAT);
+ ver = tadpmu_recv();
+ printf("status %02x\n", ver);
+
+ tadpmu_sme = sysmon_envsys_create();
+ tadpmu_sme->sme_name = "tadpmu";
+ tadpmu_sme->sme_cookie = NULL;
+ tadpmu_sme->sme_refresh = tadpmu_sensors_refresh;
+
+ tadpmu_sensors[0].units = ENVSYS_STEMP;
+ tadpmu_sensors[0].private = CMD_READ_SYSTEMP;
+ strcpy(tadpmu_sensors[0].desc, "systemp");
+ sysmon_envsys_sensor_attach(tadpmu_sme, &tadpmu_sensors[0]);
+#ifdef TADPMU_DEBUG
+ tadpmu_sensors[1].units = ENVSYS_INTEGER;
+ tadpmu_sensors[1].private = 0x17;
+ strcpy(tadpmu_sensors[1].desc, "reg 17");
+ sysmon_envsys_sensor_attach(tadpmu_sme, &tadpmu_sensors[1]);
+ tadpmu_sensors[2].units = ENVSYS_INTEGER;
+ tadpmu_sensors[2].private = 0x18;
+ strcpy(tadpmu_sensors[2].desc, "reg 18");
+ sysmon_envsys_sensor_attach(tadpmu_sme, &tadpmu_sensors[2]);
+ tadpmu_sensors[3].units = ENVSYS_INTEGER;
+ tadpmu_sensors[3].private = CMD_READ_GENSTAT;
+ strcpy(tadpmu_sensors[3].desc, "genstat");
+ sysmon_envsys_sensor_attach(tadpmu_sme, &tadpmu_sensors[3]);
+#if 0
+ tadpmu_sensors[4].units = ENVSYS_INTEGER;
+ tadpmu_sensors[4].private = CMD_READ_VBATT;
+ strcpy(tadpmu_sensors[4].desc, "Vbatt");
+ sysmon_envsys_sensor_attach(tadpmu_sme, &tadpmu_sensors[4]);
+#endif
+#endif
+ sysmon_envsys_register(tadpmu_sme);
+
+ return 0;
+}
+
diff -r 2d14deb07259 -r 426b57f80143 sys/arch/sparc64/dev/tadpmureg.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/sparc64/dev/tadpmureg.h Fri Oct 12 21:44:32 2018 +0000
@@ -0,0 +1,85 @@
+/* $NetBSD: tadpmureg.h,v 1.1 2018/10/12 21:44:32 macallan Exp $ */
+
+/*-
+ * Copyright (c) 2018 Michael Lorenz <macallan%netbsd.org@localhost>
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``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 FOUNDATION OR CONTRIBUTORS
+ * 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.
+ */
+
+/* registers and commands for the PMU found in Tadpole Viper laptops */
+
+#ifndef TADPMUREG_H
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