* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
*/
+#define pr_fmt(fmt) "ACPI: " fmt
+
#include <linux/module.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include "internal.h"
-#define _COMPONENT ACPI_BUS_COMPONENT
-ACPI_MODULE_NAME("bus");
-
struct acpi_device *acpi_root;
struct proc_dir_entry *acpi_root_dir;
EXPORT_SYMBOL(acpi_root_dir);
#else
static int set_copy_dsdt(const struct dmi_system_id *id)
{
- printk(KERN_NOTICE "%s detected - "
- "force copy of DSDT to local memory\n", id->ident);
+ pr_notice("%s detected - force copy of DSDT to local memory\n", id->ident);
acpi_gbl_copy_dsdt_locally = 1;
return 0;
}
acpi_set_device_status(device, sta);
if (device->status.functional && !device->status.present) {
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]: "
- "functional but not present;\n",
- device->pnp.bus_id, (u32)sta));
+ pr_debug("Device [%s] status [%08x]: functional but not present\n",
+ device->pnp.bus_id, (u32)sta);
}
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]\n",
- device->pnp.bus_id, (u32)sta));
+ pr_debug("Device [%s] status [%08x]\n", device->pnp.bus_id, (u32)sta);
return 0;
}
EXPORT_SYMBOL(acpi_bus_get_status);
bool osc_pc_lpi_support_confirmed;
EXPORT_SYMBOL_GPL(osc_pc_lpi_support_confirmed);
+/*
+ * ACPI 6.4 Operating System Capabilities for USB.
+ */
+bool osc_sb_native_usb4_support_confirmed;
+EXPORT_SYMBOL_GPL(osc_sb_native_usb4_support_confirmed);
+
static u8 sb_uuid_str[] = "0811B06E-4A27-44F9-8D60-3CBBC22E7B48";
-static void acpi_bus_osc_support(void)
+static void acpi_bus_osc_negotiate_platform_control(void)
{
- u32 capbuf[2];
+ u32 capbuf[2], *capbuf_ret;
struct acpi_osc_context context = {
.uuid_str = sb_uuid_str,
.rev = 1,
if (IS_ENABLED(CONFIG_SCHED_MC_PRIO))
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPC_DIVERSE_HIGH_SUPPORT;
+ if (IS_ENABLED(CONFIG_USB4))
+ capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_NATIVE_USB4_SUPPORT;
+
if (!ghes_disable)
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT;
if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))
return;
- if (ACPI_SUCCESS(acpi_run_osc(handle, &context))) {
- u32 *capbuf_ret = context.ret.pointer;
- if (context.ret.length > OSC_SUPPORT_DWORD) {
- osc_sb_apei_support_acked =
- capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_APEI_SUPPORT;
- osc_pc_lpi_support_confirmed =
- capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_PCLPI_SUPPORT;
- }
+
+ if (ACPI_FAILURE(acpi_run_osc(handle, &context)))
+ return;
+
+ capbuf_ret = context.ret.pointer;
+ if (context.ret.length <= OSC_SUPPORT_DWORD) {
kfree(context.ret.pointer);
+ return;
+ }
+
+ /*
+ * Now run _OSC again with query flag clear and with the caps
+ * supported by both the OS and the platform.
+ */
+ capbuf[OSC_QUERY_DWORD] = 0;
+ capbuf[OSC_SUPPORT_DWORD] = capbuf_ret[OSC_SUPPORT_DWORD];
+ kfree(context.ret.pointer);
+
+ if (ACPI_FAILURE(acpi_run_osc(handle, &context)))
+ return;
+
+ capbuf_ret = context.ret.pointer;
+ if (context.ret.length > OSC_SUPPORT_DWORD) {
+ osc_sb_apei_support_acked =
+ capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_APEI_SUPPORT;
+ osc_pc_lpi_support_confirmed =
+ capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_PCLPI_SUPPORT;
+ osc_sb_native_usb4_support_confirmed =
+ capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_NATIVE_USB4_SUPPORT;
}
- /* do we need to check other returned cap? Sounds no */
+
+ kfree(context.ret.pointer);
+}
+
+/*
+ * Native control of USB4 capabilities. If any of the tunneling bits is
+ * set it means OS is in control and we use software based connection
+ * manager.
+ */
+u32 osc_sb_native_usb4_control;
+EXPORT_SYMBOL_GPL(osc_sb_native_usb4_control);
+
+static void acpi_bus_decode_usb_osc(const char *msg, u32 bits)
+{
+ printk(KERN_INFO PREFIX "%s USB3%c DisplayPort%c PCIe%c XDomain%c\n", msg,
+ (bits & OSC_USB_USB3_TUNNELING) ? '+' : '-',
+ (bits & OSC_USB_DP_TUNNELING) ? '+' : '-',
+ (bits & OSC_USB_PCIE_TUNNELING) ? '+' : '-',
+ (bits & OSC_USB_XDOMAIN) ? '+' : '-');
+}
+
+static u8 sb_usb_uuid_str[] = "23A0D13A-26AB-486C-9C5F-0FFA525A575A";
+static void acpi_bus_osc_negotiate_usb_control(void)
+{
+ u32 capbuf[3];
+ struct acpi_osc_context context = {
+ .uuid_str = sb_usb_uuid_str,
+ .rev = 1,
+ .cap.length = sizeof(capbuf),
+ .cap.pointer = capbuf,
+ };
+ acpi_handle handle;
+ acpi_status status;
+ u32 control;
+
+ if (!osc_sb_native_usb4_support_confirmed)
+ return;
+
+ if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))
+ return;
+
+ control = OSC_USB_USB3_TUNNELING | OSC_USB_DP_TUNNELING |
+ OSC_USB_PCIE_TUNNELING | OSC_USB_XDOMAIN;
+
+ capbuf[OSC_QUERY_DWORD] = 0;
+ capbuf[OSC_SUPPORT_DWORD] = 0;
+ capbuf[OSC_CONTROL_DWORD] = control;
+
+ status = acpi_run_osc(handle, &context);
+ if (ACPI_FAILURE(status))
+ return;
+
+ if (context.ret.length != sizeof(capbuf)) {
+ printk(KERN_INFO PREFIX "USB4 _OSC: returned invalid length buffer\n");
+ goto out_free;
+ }
+
+ osc_sb_native_usb4_control =
+ control & ((u32 *)context.ret.pointer)[OSC_CONTROL_DWORD];
+
+ acpi_bus_decode_usb_osc("USB4 _OSC: OS supports", control);
+ acpi_bus_decode_usb_osc("USB4 _OSC: OS controls",
+ osc_sb_native_usb4_control);
+
+out_free:
+ kfree(context.ret.pointer);
}
/* --------------------------------------------------------------------------
return ret;
acpi_dev->driver = acpi_drv;
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Driver [%s] successfully bound to device [%s]\n",
- acpi_drv->name, acpi_dev->pnp.bus_id));
+
+ pr_debug("Driver [%s] successfully bound to device [%s]\n",
+ acpi_drv->name, acpi_dev->pnp.bus_id);
if (acpi_drv->ops.notify) {
ret = acpi_device_install_notify_handler(acpi_dev);
}
}
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found driver [%s] for device [%s]\n",
- acpi_drv->name, acpi_dev->pnp.bus_id));
+ pr_debug("Found driver [%s] for device [%s]\n", acpi_drv->name,
+ acpi_dev->pnp.bus_id);
+
get_device(dev);
return 0;
}
message = "platform specific model";
break;
default:
- printk(KERN_WARNING PREFIX "Unknown interrupt routing model\n");
+ pr_info("Unknown interrupt routing model\n");
return -ENODEV;
}
- printk(KERN_INFO PREFIX "Using %s for interrupt routing\n", message);
+ pr_info("Using %s for interrupt routing\n", message);
status = acpi_execute_simple_method(NULL, "\\_PIC", acpi_irq_model);
if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) {
- ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PIC"));
+ pr_info("_PIC evaluation failed: %s\n", acpi_format_exception(status));
return -ENODEV;
}
if (acpi_disabled)
return;
- printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION);
+ pr_info("Core revision %08x\n", ACPI_CA_VERSION);
/* enable workarounds, unless strict ACPI spec. compliance */
if (!acpi_strict)
status = acpi_reallocate_root_table();
if (ACPI_FAILURE(status)) {
- printk(KERN_ERR PREFIX
- "Unable to reallocate ACPI tables\n");
+ pr_err("Unable to reallocate ACPI tables\n");
goto error0;
}
status = acpi_initialize_subsystem();
if (ACPI_FAILURE(status)) {
- printk(KERN_ERR PREFIX
- "Unable to initialize the ACPI Interpreter\n");
+ pr_err("Unable to initialize the ACPI Interpreter\n");
goto error0;
}
status = acpi_enable_subsystem(~ACPI_NO_ACPI_ENABLE);
if (ACPI_FAILURE(status)) {
- printk(KERN_ERR PREFIX "Unable to enable ACPI\n");
+ pr_err("Unable to enable ACPI\n");
disable_acpi();
} else {
/*
status = acpi_load_tables();
if (ACPI_FAILURE(status)) {
- printk(KERN_ERR PREFIX
- "Unable to load the System Description Tables\n");
+ pr_err("Unable to load the System Description Tables\n");
goto error1;
}
status = acpi_enable_subsystem(ACPI_NO_ACPI_ENABLE);
if (ACPI_FAILURE(status)) {
- printk(KERN_ERR PREFIX
- "Unable to start the ACPI Interpreter\n");
+ pr_err("Unable to start the ACPI Interpreter\n");
goto error1;
}
status = acpi_initialize_objects(ACPI_FULL_INITIALIZATION);
if (ACPI_FAILURE(status)) {
- printk(KERN_ERR PREFIX "Unable to initialize ACPI objects\n");
+ pr_err("Unable to initialize ACPI objects\n");
goto error1;
}
* _OSC method may exist in module level code,
* so it must be run after ACPI_FULL_INITIALIZATION
*/
- acpi_bus_osc_support();
+ acpi_bus_osc_negotiate_platform_control();
+ acpi_bus_osc_negotiate_usb_control();
/*
* _PDC control method may load dynamic SSDT tables,
*/
acpi_ec_dsdt_probe();
- printk(KERN_INFO PREFIX "Interpreter enabled\n");
+ pr_info("Interpreter enabled\n");
/* Initialize sleep structures */
acpi_sleep_init();
acpi_install_notify_handler(ACPI_ROOT_OBJECT, ACPI_SYSTEM_NOTIFY,
&acpi_bus_notify, NULL);
if (ACPI_FAILURE(status)) {
- printk(KERN_ERR PREFIX
- "Unable to register for device notifications\n");
+ pr_err("Unable to register for system notifications\n");
goto error1;
}
int result;
if (acpi_disabled) {
- printk(KERN_INFO PREFIX "Interpreter disabled.\n");
+ pr_info("Interpreter disabled.\n");
return -ENODEV;
}
acpi_kobj = kobject_create_and_add("acpi", firmware_kobj);
if (!acpi_kobj) {
- printk(KERN_WARNING "%s: kset create error\n", __func__);
+ pr_debug("%s: kset create error\n", __func__);
acpi_kobj = NULL;
}
projects / linux-2.6-microblaze.git / blobdiff