patch-2.4.1 linux/drivers/acpi/hardware/hwsleep.c

• Lines: 190
• Date: Mon Jan 29 10:15:58 2001
• Orig file: v2.4.0/linux/drivers/acpi/hardware/hwsleep.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.0/linux/drivers/acpi/hardware/hwsleep.c linux/drivers/acpi/hardware/hwsleep.c
@@ -0,0 +1,189 @@
+
+/******************************************************************************
+ *
+ * Name: hwsleep.c - ACPI Hardware Sleep/Wake Interface
+ *              $Revision: 5 $
+ *
+ *****************************************************************************/
+
+/*
+ *  Copyright (C) 2000, 2001 R. Byron Moore
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "acpi.h"
+#include "acnamesp.h"
+#include "achware.h"
+
+#define _COMPONENT          HARDWARE
+	 MODULE_NAME         ("hwsleep")
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    Acpi_set_firmware_waking_vector
+ *
+ * PARAMETERS:  Physical_address    - Physical address of ACPI real mode
+ *                                    entry point.
+ *
+ * RETURN:      AE_OK or AE_ERROR
+ *
+ * DESCRIPTION: Access function for d_firmware_waking_vector field in FACS
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+acpi_set_firmware_waking_vector (
+	ACPI_PHYSICAL_ADDRESS physical_address)
+{
+
+
+	/* Make sure that we have an FACS */
+
+	if (!acpi_gbl_FACS) {
+		return (AE_NO_ACPI_TABLES);
+	}
+
+	/* Set the vector */
+
+	if (acpi_gbl_FACS->vector_width == 32) {
+		* (u32 *) acpi_gbl_FACS->firmware_waking_vector = (u32) physical_address;
+	}
+	else {
+		*acpi_gbl_FACS->firmware_waking_vector = physical_address;
+	}
+
+	return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    Acpi_get_firmware_waking_vector
+ *
+ * PARAMETERS:  *Physical_address   - Output buffer where contents of
+ *                                    the Firmware_waking_vector field of
+ *                                    the FACS will be stored.
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Access function for d_firmware_waking_vector field in FACS
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+acpi_get_firmware_waking_vector (
+	ACPI_PHYSICAL_ADDRESS *physical_address)
+{
+
+
+	if (!physical_address) {
+		return (AE_BAD_PARAMETER);
+	}
+
+	/* Make sure that we have an FACS */
+
+	if (!acpi_gbl_FACS) {
+		return (AE_NO_ACPI_TABLES);
+	}
+
+	/* Get the vector */
+
+	if (acpi_gbl_FACS->vector_width == 32) {
+		*physical_address = * (u32 *) acpi_gbl_FACS->firmware_waking_vector;
+	}
+	else {
+		*physical_address = *acpi_gbl_FACS->firmware_waking_vector;
+	}
+
+	return (AE_OK);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION:    Acpi_enter_sleep_state
+ *
+ * PARAMETERS:  Sleep_state         - Which sleep state to enter
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Enter a system sleep state (see ACPI 2.0 spec p 231)
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+acpi_enter_sleep_state (
+	u8 sleep_state)
+{
+	ACPI_STATUS status;
+	ACPI_OBJECT_LIST arg_list;
+	ACPI_OBJECT arg;
+	u8 type_a;
+	u8 type_b;
+	u16 PM1_acontrol;
+	u16 PM1_bcontrol;
+
+	/*
+	 * _PSW methods could be run here to enable wake-on keyboard, LAN, etc.
+	 */
+
+	status = acpi_hw_obtain_sleep_type_register_data(sleep_state, &type_a, &type_b);
+
+	if (!ACPI_SUCCESS(status)) {
+		return status;
+	}
+
+	/* run the _PTS and _GTS methods */
+	MEMSET(&arg_list, 0, sizeof(arg_list));
+	arg_list.count = 1;
+	arg_list.pointer = &arg;
+
+	MEMSET(&arg, 0, sizeof(arg));
+	arg.type = ACPI_TYPE_INTEGER;
+	arg.integer.value = sleep_state;
+
+	acpi_evaluate_object(NULL, "\\_PTS", &arg_list, NULL);
+	acpi_evaluate_object(NULL, "\\_GTS", &arg_list, NULL);
+
+	/* clear wake status */
+	acpi_hw_register_bit_access(ACPI_WRITE, ACPI_MTX_LOCK, WAK_STS, 1);
+
+	PM1_acontrol = (u16) acpi_hw_register_read(ACPI_MTX_LOCK, PM1_CONTROL);
+
+	/* mask off SLP_EN and SLP_TYP fields */
+	PM1_acontrol &= 0xC3FF;
+
+	/* mask in SLP_EN */
+	PM1_acontrol |= (1 << acpi_hw_get_bit_shift (SLP_EN_MASK));
+
+	PM1_bcontrol = PM1_acontrol;
+
+	/* mask in SLP_TYP */
+	PM1_acontrol |= (type_a << acpi_hw_get_bit_shift (SLP_TYPE_X_MASK));
+	PM1_bcontrol |= (type_b << acpi_hw_get_bit_shift (SLP_TYPE_X_MASK));
+
+	/* the old version was disabling interrupts. let's try it without
+	 * and see how that works
+	 */
+	/*disable();*/
+
+	acpi_hw_register_write(ACPI_MTX_LOCK, PM1_a_CONTROL, PM1_acontrol);
+	acpi_hw_register_write(ACPI_MTX_LOCK, PM1_b_CONTROL, PM1_bcontrol);
+
+	/*enable();*/
+
+	return (AE_OK);
+}