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authorRui Paulo <rpaulo@FreeBSD.org>2009-06-23 13:17:25 +0000
committerRui Paulo <rpaulo@FreeBSD.org>2009-06-23 13:17:25 +0000
commitdf849145b5f98e0d2667cf7775fc1cab7c001640 (patch)
tree1859c73618d343cfb5dfa40db40b0adee88bcf1e /sys/dev/acpi_support/acpi_hp.c
parenta877d0cffadc573b60fbf1dffc47b0047afdc97a (diff)
downloadsrc-df849145b5f98e0d2667cf7775fc1cab7c001640.tar.gz
src-df849145b5f98e0d2667cf7775fc1cab7c001640.zip
* Driver for ACPI WMI (Windows Management Instrumentation)
* Driver for ACPI HP extra functionations, which required ACPI WMI driver. Submitted by: Michael <freebsdusb at bindone.de> Approved by: re MFC after: 2 weeks
Notes
Notes: svn path=/head/; revision=194701
Diffstat (limited to 'sys/dev/acpi_support/acpi_hp.c')
-rw-r--r--sys/dev/acpi_support/acpi_hp.c1183
1 files changed, 1183 insertions, 0 deletions
diff --git a/sys/dev/acpi_support/acpi_hp.c b/sys/dev/acpi_support/acpi_hp.c
new file mode 100644
index 000000000000..66d30e82a74e
--- /dev/null
+++ b/sys/dev/acpi_support/acpi_hp.c
@@ -0,0 +1,1183 @@
+/*-
+ * Copyright (c) 2009 Michael Gmelin <freebsd@grem.de>
+ * 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 AUTHOR 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 AUTHOR 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+/*
+ * Driver for extra ACPI-controlled features found on HP laptops
+ * that use a WMI enabled BIOS (e.g. HP Compaq 8510p and 6510p).
+ * Allows to control and read status of integrated hardware and read
+ * BIOS settings through CMI.
+ * Inspired by the hp-wmi driver, which implements a subset of these
+ * features (hotkeys) on Linux.
+ *
+ * HP CMI whitepaper:
+ * http://h20331.www2.hp.com/Hpsub/downloads/cmi_whitepaper.pdf
+ * wmi-hp for Linux:
+ * http://www.kernel.org
+ * WMI and ACPI:
+ * http://www.microsoft.com/whdc/system/pnppwr/wmi/wmi-acpi.mspx
+ */
+
+#include "opt_acpi.h"
+#include <sys/param.h>
+#include <sys/conf.h>
+#include <sys/uio.h>
+#include <sys/proc.h>
+#include <sys/kernel.h>
+#include <sys/bus.h>
+#include <sys/sbuf.h>
+#include <sys/module.h>
+#include <sys/sysctl.h>
+
+#include <contrib/dev/acpica/include/acpi.h>
+#include <contrib/dev/acpica/include/accommon.h>
+#include <dev/acpica/acpivar.h>
+#include "acpi_wmi_if.h"
+
+#define _COMPONENT ACPI_OEM
+ACPI_MODULE_NAME("HP")
+
+#define ACPI_HP_WMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C"
+#define ACPI_HP_WMI_BIOS_GUID "5FB7F034-2C63-45E9-BE91-3D44E2C707E4"
+#define ACPI_HP_WMI_CMI_GUID "2D114B49-2DFB-4130-B8FE-4A3C09E75133"
+
+#define ACPI_HP_WMI_DISPLAY_COMMAND 0x1
+#define ACPI_HP_WMI_HDDTEMP_COMMAND 0x2
+#define ACPI_HP_WMI_ALS_COMMAND 0x3
+#define ACPI_HP_WMI_DOCK_COMMAND 0x4
+#define ACPI_HP_WMI_WIRELESS_COMMAND 0x5
+
+#define ACPI_HP_METHOD_WLAN_ENABLED 1
+#define ACPI_HP_METHOD_WLAN_RADIO 2
+#define ACPI_HP_METHOD_WLAN_ON_AIR 3
+#define ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON 4
+#define ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF 5
+#define ACPI_HP_METHOD_BLUETOOTH_ENABLED 6
+#define ACPI_HP_METHOD_BLUETOOTH_RADIO 7
+#define ACPI_HP_METHOD_BLUETOOTH_ON_AIR 8
+#define ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON 9
+#define ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF 10
+#define ACPI_HP_METHOD_WWAN_ENABLED 11
+#define ACPI_HP_METHOD_WWAN_RADIO 12
+#define ACPI_HP_METHOD_WWAN_ON_AIR 13
+#define ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON 14
+#define ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF 15
+#define ACPI_HP_METHOD_ALS 16
+#define ACPI_HP_METHOD_DISPLAY 17
+#define ACPI_HP_METHOD_HDDTEMP 18
+#define ACPI_HP_METHOD_DOCK 19
+#define ACPI_HP_METHOD_CMI_DETAIL 20
+
+#define HP_MASK_WWAN_ON_AIR 0x1000000
+#define HP_MASK_BLUETOOTH_ON_AIR 0x10000
+#define HP_MASK_WLAN_ON_AIR 0x100
+#define HP_MASK_WWAN_RADIO 0x8000000
+#define HP_MASK_BLUETOOTH_RADIO 0x80000
+#define HP_MASK_WLAN_RADIO 0x800
+#define HP_MASK_WWAN_ENABLED 0x2000000
+#define HP_MASK_BLUETOOTH_ENABLED 0x20000
+#define HP_MASK_WLAN_ENABLED 0x200
+
+#define ACPI_HP_CMI_DETAIL_PATHS 0x01
+#define ACPI_HP_CMI_DETAIL_ENUMS 0x02
+#define ACPI_HP_CMI_DETAIL_FLAGS 0x04
+
+struct acpi_hp_inst_seq_pair {
+ UINT32 sequence; /* sequence number as suggested by cmi bios */
+ UINT8 instance; /* object instance on guid */
+};
+
+struct acpi_hp_softc {
+ device_t dev;
+ ACPI_HANDLE handle;
+ device_t wmi_dev;
+ int has_notify; /* notification GUID found */
+ int has_cmi; /* CMI GUID found */
+ int cmi_detail; /* CMI detail level
+ (set by sysctl) */
+ int wlan_enable_if_radio_on; /* set by sysctl */
+ int wlan_disable_if_radio_off; /* set by sysctl */
+ int bluetooth_enable_if_radio_on; /* set by sysctl */
+ int bluetooth_disable_if_radio_off; /* set by sysctl */
+ int wwan_enable_if_radio_on; /* set by sysctl */
+ int wwan_disable_if_radio_off; /* set by sysctl */
+ int was_wlan_on_air; /* last known WLAN
+ on air status */
+ int was_bluetooth_on_air; /* last known BT
+ on air status */
+ int was_wwan_on_air; /* last known WWAN
+ on air status */
+ struct sysctl_ctx_list *sysctl_ctx;
+ struct sysctl_oid *sysctl_tree;
+ struct cdev *hpcmi_dev_t; /* hpcmi device handle */
+ struct sbuf hpcmi_sbuf; /* /dev/hpcmi output sbuf */
+ pid_t hpcmi_open_pid; /* pid operating on
+ /dev/hpcmi */
+ int hpcmi_bufptr; /* current pointer position
+ in /dev/hpcmi output buffer
+ */
+ int cmi_order_size; /* size of cmi_order list */
+ struct acpi_hp_inst_seq_pair cmi_order[128]; /* list of CMI
+ instances ordered by BIOS suggested sequence */
+};
+
+static struct {
+ char *name;
+ int method;
+ char *description;
+ int access;
+} acpi_hp_sysctls[] = {
+ {
+ .name = "wlan_enabled",
+ .method = ACPI_HP_METHOD_WLAN_ENABLED,
+ .description = "Enable/Disable WLAN (WiFi)",
+ .access = CTLTYPE_INT | CTLFLAG_RW
+ },
+ {
+ .name = "wlan_radio",
+ .method = ACPI_HP_METHOD_WLAN_RADIO,
+ .description = "WLAN radio status",
+ .access = CTLTYPE_INT | CTLFLAG_RD
+ },
+ {
+ .name = "wlan_on_air",
+ .method = ACPI_HP_METHOD_WLAN_ON_AIR,
+ .description = "WLAN radio ready to use (enabled and radio)",
+ .access = CTLTYPE_INT | CTLFLAG_RD
+ },
+ {
+ .name = "wlan_enable_if_radio_on",
+ .method = ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON,
+ .description = "Enable WLAN if radio is turned on",
+ .access = CTLTYPE_INT | CTLFLAG_RW
+ },
+ {
+ .name = "wlan_disable_if_radio_off",
+ .method = ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF,
+ .description = "Disable WLAN if radio is turned off",
+ .access = CTLTYPE_INT | CTLFLAG_RW
+ },
+ {
+ .name = "bt_enabled",
+ .method = ACPI_HP_METHOD_BLUETOOTH_ENABLED,
+ .description = "Enable/Disable Bluetooth",
+ .access = CTLTYPE_INT | CTLFLAG_RW
+ },
+ {
+ .name = "bt_radio",
+ .method = ACPI_HP_METHOD_BLUETOOTH_RADIO,
+ .description = "Bluetooth radio status",
+ .access = CTLTYPE_INT | CTLFLAG_RD
+ },
+ {
+ .name = "bt_on_air",
+ .method = ACPI_HP_METHOD_BLUETOOTH_ON_AIR,
+ .description = "Bluetooth radio ready to use"
+ " (enabled and radio)",
+ .access = CTLTYPE_INT | CTLFLAG_RD
+ },
+ {
+ .name = "bt_enable_if_radio_on",
+ .method = ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON,
+ .description = "Enable bluetooth if radio is turned on",
+ .access = CTLTYPE_INT | CTLFLAG_RW
+ },
+ {
+ .name = "bt_disable_if_radio_off",
+ .method = ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF,
+ .description = "Disable bluetooth if radio is turned off",
+ .access = CTLTYPE_INT | CTLFLAG_RW
+ },
+ {
+ .name = "wwan_enabled",
+ .method = ACPI_HP_METHOD_WWAN_ENABLED,
+ .description = "Enable/Disable WWAN (UMTS)",
+ .access = CTLTYPE_INT | CTLFLAG_RW
+ },
+ {
+ .name = "wwan_radio",
+ .method = ACPI_HP_METHOD_WWAN_RADIO,
+ .description = "WWAN radio status",
+ .access = CTLTYPE_INT | CTLFLAG_RD
+ },
+ {
+ .name = "wwan_on_air",
+ .method = ACPI_HP_METHOD_WWAN_ON_AIR,
+ .description = "WWAN radio ready to use (enabled and radio)",
+ .access = CTLTYPE_INT | CTLFLAG_RD
+ },
+ {
+ .name = "wwan_enable_if_radio_on",
+ .method = ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON,
+ .description = "Enable WWAN if radio is turned on",
+ .access = CTLTYPE_INT | CTLFLAG_RW
+ },
+ {
+ .name = "wwan_disable_if_radio_off",
+ .method = ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF,
+ .description = "Disable WWAN if radio is turned off",
+ .access = CTLTYPE_INT | CTLFLAG_RW
+ },
+ {
+ .name = "als_enabled",
+ .method = ACPI_HP_METHOD_ALS,
+ .description = "Enable/Disable ALS (Ambient light sensor)",
+ .access = CTLTYPE_INT | CTLFLAG_RW
+ },
+ {
+ .name = "display",
+ .method = ACPI_HP_METHOD_DISPLAY,
+ .description = "Display status",
+ .access = CTLTYPE_INT | CTLFLAG_RD
+ },
+ {
+ .name = "hdd_temperature",
+ .method = ACPI_HP_METHOD_HDDTEMP,
+ .description = "HDD temperature",
+ .access = CTLTYPE_INT | CTLFLAG_RD
+ },
+ {
+ .name = "is_docked",
+ .method = ACPI_HP_METHOD_DOCK,
+ .description = "Docking station status",
+ .access = CTLTYPE_INT | CTLFLAG_RD
+ },
+ {
+ .name = "cmi_detail",
+ .method = ACPI_HP_METHOD_CMI_DETAIL,
+ .description = "Details shown in CMI output "
+ "(cat /dev/hpcmi)",
+ .access = CTLTYPE_INT | CTLFLAG_RW
+ },
+
+ { NULL, 0, NULL, 0 }
+};
+
+ACPI_SERIAL_DECL(hp, "HP ACPI-WMI Mapping");
+
+static int acpi_hp_probe(device_t dev);
+static int acpi_hp_attach(device_t dev);
+static int acpi_hp_detach(device_t dev);
+
+static void acpi_hp_evaluate_auto_on_off(struct acpi_hp_softc* sc);
+static int acpi_hp_sysctl(SYSCTL_HANDLER_ARGS);
+static int acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method,
+ int arg, int oldarg);
+static int acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method);
+static int acpi_hp_exec_wmi_command(device_t wmi_dev, int command,
+ int is_write, int val);
+static void acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context);
+static int acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid,
+ UINT8 instance, char* outbuf, size_t outsize,
+ UINT32* sequence, int detail);
+static void acpi_hp_hex_decode(char* buffer);
+
+static d_open_t acpi_hp_hpcmi_open;
+static d_close_t acpi_hp_hpcmi_close;
+static d_read_t acpi_hp_hpcmi_read;
+
+/* handler /dev/hpcmi device */
+static struct cdevsw hpcmi_cdevsw = {
+ .d_version = D_VERSION,
+ .d_open = acpi_hp_hpcmi_open,
+ .d_close = acpi_hp_hpcmi_close,
+ .d_read = acpi_hp_hpcmi_read,
+ .d_name = "hpcmi",
+};
+
+static device_method_t acpi_hp_methods[] = {
+ DEVMETHOD(device_probe, acpi_hp_probe),
+ DEVMETHOD(device_attach, acpi_hp_attach),
+ DEVMETHOD(device_detach, acpi_hp_detach),
+ {0, 0}
+};
+
+static driver_t acpi_hp_driver = {
+ "acpi_hp",
+ acpi_hp_methods,
+ sizeof(struct acpi_hp_softc),
+};
+
+static devclass_t acpi_hp_devclass;
+
+DRIVER_MODULE(acpi_hp, acpi, acpi_hp_driver, acpi_hp_devclass,
+ 0, 0);
+MODULE_DEPEND(acpi_hp, acpi_wmi, 1, 1, 1);
+MODULE_DEPEND(acpi_hp, acpi, 1, 1, 1);
+
+static void
+acpi_hp_evaluate_auto_on_off(struct acpi_hp_softc *sc)
+{
+ int wireless;
+ int new_wlan_status;
+ int new_bluetooth_status;
+ int new_wwan_status;
+
+ wireless = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
+ new_wlan_status = -1;
+ new_bluetooth_status = -1;
+ new_wwan_status = -1;
+
+ device_printf(sc->wmi_dev, "Wireless status is %x\n", wireless);
+ if (sc->wlan_disable_if_radio_off && !(wireless & HP_MASK_WLAN_RADIO)
+ && (wireless & HP_MASK_WLAN_ENABLED)) {
+ acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x100);
+ new_wlan_status = 0;
+ }
+ else if (sc->wlan_enable_if_radio_on && (wireless & HP_MASK_WLAN_RADIO)
+ && !(wireless & HP_MASK_WLAN_ENABLED)) {
+ acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x101);
+ new_wlan_status = 1;
+ }
+ if (sc->bluetooth_disable_if_radio_off &&
+ !(wireless & HP_MASK_BLUETOOTH_RADIO) &&
+ (wireless & HP_MASK_BLUETOOTH_ENABLED)) {
+ acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x200);
+ new_bluetooth_status = 0;
+ }
+ else if (sc->bluetooth_enable_if_radio_on &&
+ (wireless & HP_MASK_BLUETOOTH_RADIO) &&
+ !(wireless & HP_MASK_BLUETOOTH_ENABLED)) {
+ acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x202);
+ new_bluetooth_status = 1;
+ }
+ if (sc->wwan_disable_if_radio_off &&
+ !(wireless & HP_MASK_WWAN_RADIO) &&
+ (wireless & HP_MASK_WWAN_ENABLED)) {
+ acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x400);
+ new_wwan_status = 0;
+ }
+ else if (sc->wwan_enable_if_radio_on &&
+ (wireless & HP_MASK_WWAN_RADIO) &&
+ !(wireless & HP_MASK_WWAN_ENABLED)) {
+ acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x404);
+ new_wwan_status = 1;
+ }
+
+ if (new_wlan_status == -1) {
+ new_wlan_status = (wireless & HP_MASK_WLAN_ON_AIR);
+ if ((new_wlan_status?1:0) != sc->was_wlan_on_air) {
+ sc->was_wlan_on_air = sc->was_wlan_on_air?0:1;
+ device_printf(sc->wmi_dev,
+ "WLAN on air changed to %i "
+ "(new_wlan_status is %i)\n",
+ sc->was_wlan_on_air, new_wlan_status);
+ acpi_UserNotify("HP", sc->handle,
+ 0xc0+sc->was_wlan_on_air);
+ }
+ }
+ if (new_bluetooth_status == -1) {
+ new_bluetooth_status = (wireless & HP_MASK_BLUETOOTH_ON_AIR);
+ if ((new_bluetooth_status?1:0) != sc->was_bluetooth_on_air) {
+ sc->was_bluetooth_on_air = sc->was_bluetooth_on_air?
+ 0:1;
+ device_printf(sc->wmi_dev, "BLUETOOTH on air changed"
+ " to %i (new_bluetooth_status is %i)\n",
+ sc->was_bluetooth_on_air, new_bluetooth_status);
+ acpi_UserNotify("HP", sc->handle,
+ 0xd0+sc->was_bluetooth_on_air);
+ }
+ }
+ if (new_wwan_status == -1) {
+ new_wwan_status = (wireless & HP_MASK_WWAN_ON_AIR);
+ if ((new_wwan_status?1:0) != sc->was_wwan_on_air) {
+ sc->was_wwan_on_air = sc->was_wwan_on_air?0:1;
+ device_printf(sc->wmi_dev, "WWAN on air changed to %i"
+ " (new_wwan_status is %i)\n",
+ sc->was_wwan_on_air, new_wwan_status);
+ acpi_UserNotify("HP", sc->handle,
+ 0xe0+sc->was_wwan_on_air);
+ }
+ }
+}
+
+static int
+acpi_hp_probe(device_t dev)
+{
+ if (acpi_disabled("hp") || device_get_unit(dev) != 0)
+ return (ENXIO);
+ device_set_desc(dev, "HP ACPI-WMI Mapping");
+
+ return (0);
+}
+
+static int
+acpi_hp_attach(device_t dev)
+{
+ struct acpi_hp_softc *sc;
+ struct acpi_softc *acpi_sc;
+ devclass_t wmi_devclass;
+ int arg;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
+
+ sc = device_get_softc(dev);
+ sc->dev = dev;
+ sc->handle = acpi_get_handle(dev);
+ sc->has_notify = 0;
+ sc->has_cmi = 0;
+ sc->bluetooth_enable_if_radio_on = 0;
+ sc->bluetooth_disable_if_radio_off = 0;
+ sc->wlan_enable_if_radio_on = 0;
+ sc->wlan_disable_if_radio_off = 0;
+ sc->wlan_enable_if_radio_on = 0;
+ sc->wlan_disable_if_radio_off = 0;
+ sc->was_wlan_on_air = 0;
+ sc->was_bluetooth_on_air = 0;
+ sc->was_wwan_on_air = 0;
+ sc->cmi_detail = 0;
+ sc->cmi_order_size = -1;
+ memset(sc->cmi_order, 0, sizeof(sc->cmi_order));
+ acpi_sc = acpi_device_get_parent_softc(dev);
+
+ if (!(wmi_devclass = devclass_find ("acpi_wmi"))) {
+ device_printf(dev, "Couldn't find acpi_wmi devclass\n");
+ return (EINVAL);
+ }
+ if (!(sc->wmi_dev = devclass_get_device(wmi_devclass, 0))) {
+ device_printf(dev, "Couldn't find acpi_wmi device\n");
+ return (EINVAL);
+ }
+ if (!ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev,
+ ACPI_HP_WMI_BIOS_GUID)) {
+ device_printf(dev,
+ "WMI device does not provide the HP BIOS GUID\n");
+ return (EINVAL);
+ }
+ if (ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev,
+ ACPI_HP_WMI_EVENT_GUID)) {
+ device_printf(dev,
+ "HP event GUID detected, installing event handler\n");
+ if (ACPI_WMI_INSTALL_EVENT_HANDLER(sc->wmi_dev,
+ ACPI_HP_WMI_EVENT_GUID, acpi_hp_notify, dev)) {
+ device_printf(dev,
+ "Could not install notification handler!\n");
+ }
+ else {
+ sc->has_notify = 1;
+ }
+ }
+ if (ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, ACPI_HP_WMI_CMI_GUID)) {
+ device_printf(dev, "HP CMI GUID detected\n");
+ sc->has_cmi = 1;
+ }
+
+ if (sc->has_cmi) {
+ sc->hpcmi_dev_t = make_dev(&hpcmi_cdevsw, 0, UID_ROOT,
+ GID_WHEEL, 0644, "hpcmi");
+ sc->hpcmi_dev_t->si_drv1 = sc;
+ sc->hpcmi_open_pid = 0;
+ sc->hpcmi_bufptr = -1;
+ }
+
+ ACPI_SERIAL_BEGIN(hp);
+
+ sc->sysctl_ctx = device_get_sysctl_ctx(dev);
+ sc->sysctl_tree = device_get_sysctl_tree(dev);
+ for (int i = 0; acpi_hp_sysctls[i].name != NULL; ++i) {
+ arg = 0;
+ if ((!sc->has_notify &&
+ (acpi_hp_sysctls[i].method ==
+ ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON ||
+ acpi_hp_sysctls[i].method ==
+ ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF ||
+ acpi_hp_sysctls[i].method ==
+ ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON ||
+ acpi_hp_sysctls[i].method ==
+ ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF ||
+ acpi_hp_sysctls[i].method ==
+ ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON ||
+ acpi_hp_sysctls[i].method ==
+ ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF)) ||
+ (arg = acpi_hp_sysctl_get(sc,
+ acpi_hp_sysctls[i].method)) < 0) {
+ continue;
+ }
+ if (acpi_hp_sysctls[i].method == ACPI_HP_METHOD_WLAN_ON_AIR) {
+ sc->was_wlan_on_air = arg;
+ }
+ else if (acpi_hp_sysctls[i].method ==
+ ACPI_HP_METHOD_BLUETOOTH_ON_AIR) {
+ sc->was_bluetooth_on_air = arg;
+ }
+ else if (acpi_hp_sysctls[i].method ==
+ ACPI_HP_METHOD_WWAN_ON_AIR) {
+ sc->was_wwan_on_air = arg;
+ }
+
+ SYSCTL_ADD_PROC(sc->sysctl_ctx,
+ SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
+ acpi_hp_sysctls[i].name, acpi_hp_sysctls[i].access,
+ sc, i, acpi_hp_sysctl, "I",
+ acpi_hp_sysctls[i].description);
+ }
+ ACPI_SERIAL_END(hp);
+
+ return (0);
+}
+
+static int
+acpi_hp_detach(device_t dev)
+{
+ int ret;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
+ struct acpi_hp_softc *sc = device_get_softc(dev);
+ if (sc->has_cmi && sc->hpcmi_open_pid != 0) {
+ ret = EBUSY;
+ }
+ else {
+ if (sc->has_notify) {
+ ACPI_WMI_REMOVE_EVENT_HANDLER(dev,
+ ACPI_HP_WMI_EVENT_GUID);
+ }
+ if (sc->hpcmi_bufptr != -1) {
+ sbuf_delete(&sc->hpcmi_sbuf);
+ sc->hpcmi_bufptr = -1;
+ }
+ sc->hpcmi_open_pid = 0;
+ destroy_dev(sc->hpcmi_dev_t);
+ ret = 0;
+ }
+
+ return (ret);
+}
+
+static int
+acpi_hp_sysctl(SYSCTL_HANDLER_ARGS)
+{
+ struct acpi_hp_softc *sc;
+ int arg;
+ int oldarg;
+ int error = 0;
+ int function;
+ int method;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ sc = (struct acpi_hp_softc *)oidp->oid_arg1;
+ function = oidp->oid_arg2;
+ method = acpi_hp_sysctls[function].method;
+
+ ACPI_SERIAL_BEGIN(hp);
+ arg = acpi_hp_sysctl_get(sc, method);
+ oldarg = arg;
+ error = sysctl_handle_int(oidp, &arg, 0, req);
+ if (!error && req->newptr != NULL) {
+ error = acpi_hp_sysctl_set(sc, method, arg, oldarg);
+ }
+ ACPI_SERIAL_END(hp);
+
+ return (error);
+}
+
+static int
+acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method)
+{
+ int val = 0;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+ ACPI_SERIAL_ASSERT(hp);
+
+ switch (method) {
+ case ACPI_HP_METHOD_WLAN_ENABLED:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
+ val = ((val & HP_MASK_WLAN_ENABLED) != 0);
+ break;
+ case ACPI_HP_METHOD_WLAN_RADIO:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
+ val = ((val & HP_MASK_WLAN_RADIO) != 0);
+ break;
+ case ACPI_HP_METHOD_WLAN_ON_AIR:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
+ val = ((val & HP_MASK_WLAN_ON_AIR) != 0);
+ break;
+ case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON:
+ val = sc->wlan_enable_if_radio_on;
+ break;
+ case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF:
+ val = sc->wlan_disable_if_radio_off;
+ break;
+ case ACPI_HP_METHOD_BLUETOOTH_ENABLED:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
+ val = ((val & HP_MASK_BLUETOOTH_ENABLED) != 0);
+ break;
+ case ACPI_HP_METHOD_BLUETOOTH_RADIO:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
+ val = ((val & HP_MASK_BLUETOOTH_RADIO) != 0);
+ break;
+ case ACPI_HP_METHOD_BLUETOOTH_ON_AIR:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
+ val = ((val & HP_MASK_BLUETOOTH_ON_AIR) != 0);
+ break;
+ case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON:
+ val = sc->bluetooth_enable_if_radio_on;
+ break;
+ case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF:
+ val = sc->bluetooth_disable_if_radio_off;
+ break;
+ case ACPI_HP_METHOD_WWAN_ENABLED:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
+ val = ((val & HP_MASK_WWAN_ENABLED) != 0);
+ break;
+ case ACPI_HP_METHOD_WWAN_RADIO:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
+ val = ((val & HP_MASK_WWAN_RADIO) != 0);
+ break;
+ case ACPI_HP_METHOD_WWAN_ON_AIR:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
+ val = ((val & HP_MASK_WWAN_ON_AIR) != 0);
+ break;
+ case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON:
+ val = sc->wwan_enable_if_radio_on;
+ break;
+ case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF:
+ val = sc->wwan_disable_if_radio_off;
+ break;
+ case ACPI_HP_METHOD_ALS:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_ALS_COMMAND, 0, 0);
+ break;
+ case ACPI_HP_METHOD_DISPLAY:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_DISPLAY_COMMAND, 0, 0);
+ break;
+ case ACPI_HP_METHOD_HDDTEMP:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_HDDTEMP_COMMAND, 0, 0);
+ break;
+ case ACPI_HP_METHOD_DOCK:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_DOCK_COMMAND, 0, 0);
+ break;
+ case ACPI_HP_METHOD_CMI_DETAIL:
+ val = sc->cmi_detail;
+ break;
+ }
+
+ return (val);
+}
+
+static int
+acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method, int arg, int oldarg)
+{
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+ ACPI_SERIAL_ASSERT(hp);
+
+ if (method != ACPI_HP_METHOD_CMI_DETAIL)
+ arg = arg?1:0;
+
+ if (arg != oldarg) {
+ switch (method) {
+ case ACPI_HP_METHOD_WLAN_ENABLED:
+ return (acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 1,
+ arg?0x101:0x100));
+ case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON:
+ sc->wlan_enable_if_radio_on = arg;
+ acpi_hp_evaluate_auto_on_off(sc);
+ break;
+ case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF:
+ sc->wlan_disable_if_radio_off = arg;
+ acpi_hp_evaluate_auto_on_off(sc);
+ break;
+ case ACPI_HP_METHOD_BLUETOOTH_ENABLED:
+ return (acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 1,
+ arg?0x202:0x200));
+ case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON:
+ sc->bluetooth_enable_if_radio_on = arg;
+ acpi_hp_evaluate_auto_on_off(sc);
+ break;
+ case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF:
+ sc->bluetooth_disable_if_radio_off = arg?1:0;
+ acpi_hp_evaluate_auto_on_off(sc);
+ break;
+ case ACPI_HP_METHOD_WWAN_ENABLED:
+ return (acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 1,
+ arg?0x404:0x400));
+ case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON:
+ sc->wwan_enable_if_radio_on = arg?1:0;
+ acpi_hp_evaluate_auto_on_off(sc);
+ break;
+ case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF:
+ sc->wwan_disable_if_radio_off = arg?1:0;
+ acpi_hp_evaluate_auto_on_off(sc);
+ break;
+ case ACPI_HP_METHOD_ALS:
+ return (acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_ALS_COMMAND, 1,
+ arg?1:0));
+ case ACPI_HP_METHOD_CMI_DETAIL:
+ sc->cmi_detail = arg;
+ break;
+ }
+ }
+
+ return (0);
+}
+
+static __inline void
+acpi_hp_free_buffer(ACPI_BUFFER* buf) {
+ if (buf && buf->Pointer) {
+ AcpiOsFree(buf->Pointer);
+ }
+}
+
+static void
+acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context)
+{
+ device_t dev = context;
+ ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
+
+ struct acpi_hp_softc *sc = device_get_softc(dev);
+ ACPI_BUFFER response = { ACPI_ALLOCATE_BUFFER, NULL };
+ ACPI_OBJECT *obj;
+ ACPI_WMI_GET_EVENT_DATA(sc->wmi_dev, notify, &response);
+ obj = (ACPI_OBJECT*) response.Pointer;
+ if (obj && obj->Type == ACPI_TYPE_BUFFER && obj->Buffer.Length == 8) {
+ if (*((UINT8 *) obj->Buffer.Pointer) == 0x5) {
+ acpi_hp_evaluate_auto_on_off(sc);
+ }
+ }
+ acpi_hp_free_buffer(&response);
+}
+
+static int
+acpi_hp_exec_wmi_command(device_t wmi_dev, int command, int is_write, int val)
+{
+ UINT32 params[5] = { 0x55434553,
+ is_write?2:1,
+ command,
+ is_write?4:0,
+ val};
+ UINT32* result;
+ ACPI_OBJECT *obj;
+ ACPI_BUFFER in = { sizeof(params), &params };
+ ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL };
+ int retval;
+
+ if (ACPI_FAILURE(ACPI_WMI_EVALUATE_CALL(wmi_dev, ACPI_HP_WMI_BIOS_GUID,
+ 0, 0x3, &in, &out))) {
+ acpi_hp_free_buffer(&out);
+ return (-EINVAL);
+ }
+ obj = out.Pointer;
+ if (!obj || obj->Type != ACPI_TYPE_BUFFER) {
+ acpi_hp_free_buffer(&out);
+ return (-EINVAL);
+ }
+ result = (UINT32*) obj->Buffer.Pointer;
+ retval = result[2];
+ if (result[1] > 0) {
+ retval = result[1];
+ }
+ acpi_hp_free_buffer(&out);
+
+ return (retval);
+}
+
+static __inline char*
+acpi_hp_get_string_from_object(ACPI_OBJECT* obj, char* dst, size_t size) {
+ int length;
+ dst[0] = 0;
+ if (obj->Type == ACPI_TYPE_STRING) {
+ length = obj->String.Length+1;
+ if (length > size) {
+ length = size - 1;
+ }
+ strlcpy(dst, obj->String.Pointer, length);
+ acpi_hp_hex_decode(dst);
+ }
+
+ return (dst);
+}
+
+
+/*
+ * Read BIOS Setting block in instance "instance".
+ * The block returned is ACPI_TYPE_PACKAGE which should contain the following
+ * elements:
+ * Index Meaning
+ * 0 Setting Name [string]
+ * 1 Value (comma separated, asterisk marks the current value) [string]
+ * 2 Path within the bios hierarchy [string]
+ * 3 IsReadOnly [int]
+ * 4 DisplayInUI [int]
+ * 5 RequiresPhysicalPresence [int]
+ * 6 Sequence for ordering within the bios settings (absolute) [int]
+ * 7 Length of prerequisites array [int]
+ * 8 Prerequisite1 [string]
+ * 9 Prerequisite2 [string]
+ * 10 Prerequisite3 [string]
+ * 11 Current value (in case of enum) [string] / Array length [int]
+ * 12 Enum length [int] / Array values
+ * 13ff Enum value at index x [string]
+ */
+static int
+acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid, UINT8 instance,
+ char* outbuf, size_t outsize, UINT32* sequence, int detail)
+{
+ ACPI_OBJECT *obj;
+ ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL };
+ int i;
+ int outlen;
+ int size = 255;
+ int has_enums = 0;
+ char string_buffer[size];
+ int enumbase;
+
+ outlen = 0;
+ outbuf[0] = 0;
+ if (ACPI_FAILURE(ACPI_WMI_GET_BLOCK(wmi_dev, guid, instance, &out))) {
+ acpi_hp_free_buffer(&out);
+ return (-EINVAL);
+ }
+ obj = out.Pointer;
+ if (!obj && obj->Type != ACPI_TYPE_PACKAGE) {
+ acpi_hp_free_buffer(&out);
+ return (-EINVAL);
+ }
+
+ /* check if this matches our expectations based on limited knowledge */
+ if (obj->Package.Count >= 13 &&
+ obj->Package.Elements[0].Type == ACPI_TYPE_STRING &&
+ obj->Package.Elements[1].Type == ACPI_TYPE_STRING &&
+ obj->Package.Elements[2].Type == ACPI_TYPE_STRING &&
+ obj->Package.Elements[3].Type == ACPI_TYPE_INTEGER &&
+ obj->Package.Elements[4].Type == ACPI_TYPE_INTEGER &&
+ obj->Package.Elements[5].Type == ACPI_TYPE_INTEGER &&
+ obj->Package.Elements[6].Type == ACPI_TYPE_INTEGER &&
+ obj->Package.Elements[7].Type == ACPI_TYPE_INTEGER &&
+ obj->Package.Elements[8].Type == ACPI_TYPE_STRING &&
+ obj->Package.Elements[9].Type == ACPI_TYPE_STRING &&
+ obj->Package.Elements[10].Type == ACPI_TYPE_STRING &&
+ ((obj->Package.Elements[11].Type == ACPI_TYPE_STRING &&
+ obj->Package.Elements[12].Type == ACPI_TYPE_INTEGER &&
+ obj->Package.Count >=
+ 13+obj->Package.Elements[12].Integer.Value) ||
+ (obj->Package.Elements[11].Type == ACPI_TYPE_INTEGER &&
+ obj->Package.Count >=
+ 12+obj->Package.Elements[11].Integer.Value))
+ ) {
+ enumbase = obj->Package.Elements[11].Type == ACPI_TYPE_STRING?
+ 12:11;
+ if (detail & ACPI_HP_CMI_DETAIL_PATHS) {
+ strlcat(outbuf, acpi_hp_get_string_from_object(
+ &obj->Package.Elements[2], string_buffer, size),
+ outsize);
+ outlen += 48;
+ while (strlen(outbuf) < outlen)
+ strlcat(outbuf, " ", outsize);
+ }
+ strlcat(outbuf, acpi_hp_get_string_from_object(
+ &obj->Package.Elements[0], string_buffer, size),
+ outsize);
+ outlen += 43;
+ while (strlen(outbuf) < outlen)
+ strlcat(outbuf, " ", outsize);
+ if (enumbase == 12)
+ strlcat(outbuf, acpi_hp_get_string_from_object(
+ &obj->Package.Elements[11],
+ string_buffer, size),
+ outsize);
+ outlen += 21;
+ while (strlen(outbuf) < outlen)
+ strlcat(outbuf, " ", outsize);
+ for (i = 0; i < strlen(outbuf); ++i)
+ if (outbuf[i] == '\\')
+ outbuf[i] = '/';
+ if (detail & ACPI_HP_CMI_DETAIL_ENUMS) {
+ for (i = enumbase+1; i < enumbase + 1 +
+ obj->Package.Elements[enumbase].Integer.Value;
+ ++i) {
+ acpi_hp_get_string_from_object(
+ &obj->Package.Elements[i], string_buffer,
+ size);
+ if (strlen(string_buffer) > 1 ||
+ (strlen(string_buffer) == 1 &&
+ string_buffer[0] != ' ')) {
+ if (has_enums)
+ strlcat(outbuf, "/", outsize);
+ else
+ strlcat(outbuf, " (", outsize);
+ strlcat(outbuf, string_buffer, outsize);
+ has_enums = 1;
+ }
+ }
+ }
+ if (has_enums)
+ strlcat(outbuf, ")", outsize);
+ if (detail & ACPI_HP_CMI_DETAIL_FLAGS) {
+ strlcat(outbuf, obj->Package.Elements[3].Integer.Value?
+ " [ReadOnly]":"", outsize);
+ strlcat(outbuf, obj->Package.Elements[4].Integer.Value?
+ "":" [NOUI]", outsize);
+ strlcat(outbuf, obj->Package.Elements[5].Integer.Value?
+ " [RPP]":"", outsize);
+ }
+ *sequence = (UINT32) obj->Package.Elements[6].Integer.Value;
+ }
+ acpi_hp_free_buffer(&out);
+
+ return (0);
+}
+
+
+
+/*
+ * Convert given two digit hex string (hexin) to an UINT8 referenced
+ * by byteout.
+ * Return != 0 if the was a problem (invalid input)
+ */
+static __inline int acpi_hp_hex_to_int(const UINT8 *hexin, UINT8 *byteout)
+{
+ unsigned int hi;
+ unsigned int lo;
+
+ hi = hexin[0];
+ lo = hexin[1];
+ if ('0' <= hi && hi <= '9')
+ hi -= '0';
+ else if ('A' <= hi && hi <= 'F')
+ hi -= ('A' - 10);
+ else if ('a' <= hi && hi <= 'f')
+ hi -= ('a' - 10);
+ else
+ return (1);
+ if ('0' <= lo && lo <= '9')
+ lo -= '0';
+ else if ('A' <= lo && lo <= 'F')
+ lo -= ('A' - 10);
+ else if ('a' <= lo && lo <= 'f')
+ lo -= ('a' - 10);
+ else
+ return (1);
+ *byteout = (hi << 4) + lo;
+
+ return (0);
+}
+
+
+static void
+acpi_hp_hex_decode(char* buffer)
+{
+ int i;
+ int length = strlen(buffer);
+ UINT8 *uin;
+ UINT8 uout;
+
+ if (((int)length/2)*2 == length || length < 10) return;
+
+ for (i = 0; i<length; ++i) {
+ if (!((i+1)%3)) {
+ if (buffer[i] != ' ')
+ return;
+ }
+ else
+ if (!((buffer[i] >= '0' && buffer[i] <= '9') ||
+ (buffer[i] >= 'A' && buffer[i] <= 'F')))
+ return;
+ }
+
+ for (i = 0; i<length; i += 3) {
+ uin = &buffer[i];
+ uout = 0;
+ acpi_hp_hex_to_int(uin, &uout);
+ buffer[i/3] = (char) uout;
+ }
+ buffer[(length+1)/3] = 0;
+}
+
+
+/*
+ * open hpcmi device
+ */
+static int
+acpi_hp_hpcmi_open(struct cdev* dev, int flags, int mode, struct thread *td)
+{
+ struct acpi_hp_softc *sc;
+ int ret;
+
+ if (dev == NULL || dev->si_drv1 == NULL)
+ return (EBADF);
+ sc = dev->si_drv1;
+
+ ACPI_SERIAL_BEGIN(hp);
+ if (sc->hpcmi_open_pid != 0) {
+ ret = EBUSY;
+ }
+ else {
+ if (sbuf_new(&sc->hpcmi_sbuf, NULL, 4096, SBUF_AUTOEXTEND)
+ == NULL) {
+ ret = ENXIO;
+ } else {
+ sc->hpcmi_open_pid = td->td_proc->p_pid;
+ sc->hpcmi_bufptr = 0;
+ ret = 0;
+ }
+ }
+ ACPI_SERIAL_END(hp);
+
+ return (ret);
+}
+
+/*
+ * close hpcmi device
+ */
+static int
+acpi_hp_hpcmi_close(struct cdev* dev, int flags, int mode, struct thread *td)
+{
+ struct acpi_hp_softc *sc;
+ int ret;
+
+ if (dev == NULL || dev->si_drv1 == NULL)
+ return (EBADF);
+ sc = dev->si_drv1;
+
+ ACPI_SERIAL_BEGIN(hp);
+ if (sc->hpcmi_open_pid == 0) {
+ ret = EBADF;
+ }
+ else {
+ if (sc->hpcmi_bufptr != -1) {
+ sbuf_delete(&sc->hpcmi_sbuf);
+ sc->hpcmi_bufptr = -1;
+ }
+ sc->hpcmi_open_pid = 0;
+ ret = 0;
+ }
+ ACPI_SERIAL_END(hp);
+
+ return (ret);
+}
+
+/*
+ * Read from hpcmi bios information
+ */
+static int
+acpi_hp_hpcmi_read(struct cdev *dev, struct uio *buf, int flag)
+{
+ struct acpi_hp_softc *sc;
+ int pos, i, l, ret;
+ UINT8 instance;
+ UINT32 sequence;
+ int linesize = 1025;
+ char line[linesize];
+
+ if (dev == NULL || dev->si_drv1 == NULL)
+ return (EBADF);
+ sc = dev->si_drv1;
+
+ ACPI_SERIAL_BEGIN(hp);
+ if (sc->hpcmi_open_pid != buf->uio_td->td_proc->p_pid
+ || sc->hpcmi_bufptr == -1) {
+ ret = EBADF;
+ }
+ else {
+ if (!sbuf_done(&sc->hpcmi_sbuf)) {
+ if (sc->cmi_order_size < 0) {
+ sc->cmi_order_size = 0;
+ for (instance = 0; instance < 128;
+ ++instance) {
+ if (acpi_hp_get_cmi_block(sc->wmi_dev,
+ ACPI_HP_WMI_CMI_GUID, instance,
+ line, linesize, &sequence,
+ sc->cmi_detail)) {
+ instance = 128;
+ }
+ else {
+ pos = sc->cmi_order_size;
+ for (i=0;
+ i<sc->cmi_order_size && i<127;
+ ++i) {
+ if (sc->cmi_order[i].sequence > sequence) {
+ pos = i;
+ break;
+ }
+ }
+ for (i=sc->cmi_order_size;
+ i>pos;
+ --i) {
+ sc->cmi_order[i].sequence =
+ sc->cmi_order[i-1].sequence;
+ sc->cmi_order[i].instance =
+ sc->cmi_order[i-1].instance;
+ }
+ sc->cmi_order[pos].sequence =
+ sequence;
+ sc->cmi_order[pos].instance =
+ instance;
+ sc->cmi_order_size++;
+ }
+ }
+ }
+ for (i=0; i<sc->cmi_order_size; ++i) {
+ if (!acpi_hp_get_cmi_block(sc->wmi_dev,
+ ACPI_HP_WMI_CMI_GUID,
+ sc->cmi_order[i].instance, line, linesize,
+ &sequence, sc->cmi_detail)) {
+ sbuf_printf(&sc->hpcmi_sbuf, "%s\n", line);
+ }
+ }
+ sbuf_finish(&sc->hpcmi_sbuf);
+ }
+ if (sbuf_len(&sc->hpcmi_sbuf) <= 0) {
+ sbuf_delete(&sc->hpcmi_sbuf);
+ sc->hpcmi_bufptr = -1;
+ sc->hpcmi_open_pid = 0;
+ ret = ENOMEM;
+ } else {
+ l = min(buf->uio_resid, sbuf_len(&sc->hpcmi_sbuf) -
+ sc->hpcmi_bufptr);
+ ret = (l > 0)?uiomove(sbuf_data(&sc->hpcmi_sbuf) +
+ sc->hpcmi_bufptr, l, buf) : 0;
+ sc->hpcmi_bufptr += l;
+ }
+ }
+ ACPI_SERIAL_END(hp);
+
+ return (ret);
+}