Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / xen / acpi.c

diff --git a/kernel/drivers/xen/acpi.c b/kernel/drivers/xen/acpi.c
new file mode 100644 (file)
index 0000000..90307c0
--- /dev/null
+++ b/kernel/drivers/xen/acpi.c
@@ -0,0 +1,77 @@
+/******************************************************************************
+ * acpi.c
+ * acpi file for domain 0 kernel
+ *
+ * Copyright (c) 2011 Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
+ * Copyright (c) 2011 Yu Ke ke.yu@intel.com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation; or, when distributed
+ * separately from the Linux kernel or incorporated into other
+ * software packages, subject to the following license:
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this source file (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy, modify,
+ * merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include <xen/acpi.h>
+#include <xen/interface/platform.h>
+#include <asm/xen/hypercall.h>
+#include <asm/xen/hypervisor.h>
+
+static int xen_acpi_notify_hypervisor_state(u8 sleep_state,
+                                           u32 val_a, u32 val_b,
+                                           bool extended)
+{
+       unsigned int bits = extended ? 8 : 16;
+
+       struct xen_platform_op op = {
+               .cmd = XENPF_enter_acpi_sleep,
+               .interface_version = XENPF_INTERFACE_VERSION,
+               .u.enter_acpi_sleep = {
+                       .val_a = (u16)val_a,
+                       .val_b = (u16)val_b,
+                       .sleep_state = sleep_state,
+                       .flags = extended ? XENPF_ACPI_SLEEP_EXTENDED : 0,
+               },
+       };
+
+       if (WARN((val_a & (~0 << bits)) || (val_b & (~0 << bits)),
+                "Using more than %u bits of sleep control values %#x/%#x!"
+                "Email xen-devel@lists.xen.org - Thank you.\n", \
+                bits, val_a, val_b))
+               return -1;
+
+       HYPERVISOR_dom0_op(&op);
+       return 1;
+}
+
+int xen_acpi_notify_hypervisor_sleep(u8 sleep_state,
+                                    u32 pm1a_cnt, u32 pm1b_cnt)
+{
+       return xen_acpi_notify_hypervisor_state(sleep_state, pm1a_cnt,
+                                               pm1b_cnt, false);
+}
+
+int xen_acpi_notify_hypervisor_extended_sleep(u8 sleep_state,
+                                    u32 val_a, u32 val_b)
+{
+       return xen_acpi_notify_hypervisor_state(sleep_state, val_a,
+                                               val_b, true);
+}