patch-2.4.0-test3 linux/drivers/acpi/common/cminit.c

• Lines: 363
• Date: Wed Jul 5 11:23:12 2000
• Orig file: v2.4.0-test2/linux/drivers/acpi/common/cminit.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.0-test2/linux/drivers/acpi/common/cminit.c linux/drivers/acpi/common/cminit.c
@@ -0,0 +1,362 @@
+
+/******************************************************************************
+ *
+ * Module Name: cminit - Common ACPI subsystem initialization
+ *
+ *****************************************************************************/
+
+/*
+ *  Copyright (C) 2000 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 "hardware.h"
+#include "namesp.h"
+#include "events.h"
+#include "parser.h"
+#include "dispatch.h"
+
+#define _COMPONENT          MISCELLANEOUS
+	 MODULE_NAME         ("cminit");
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    Acpi_cm_facp_register_error
+ *
+ * PARAMETERS:  *Register_name          - Pointer to string identifying register
+ *              Value                   - Actual register contents value
+ *              Acpi_test_spec_section  - TDS section containing assertion
+ *              Acpi_assertion          - Assertion number being tested
+ *
+ * RETURN:      none
+ *
+ * DESCRIPTION: Display failure message and link failure to TDS assertion
+ *
+ ******************************************************************************/
+
+void
+acpi_cm_facp_register_error (
+	char                    *register_name,
+	u32                     value)
+{
+
+	REPORT_ERROR ("Invalid FACP register value");
+
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    Acpi_cm_hardware_initialize
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Initialize and validate various ACPI registers
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+acpi_cm_hardware_initialize (void)
+{
+	ACPI_STATUS             status = AE_OK;
+	s32                     index;
+
+
+	/* Are we running on the actual hardware */
+
+	if (!acpi_gbl_acpi_hardware_present) {
+		/* No, just return */
+
+		return (AE_OK);
+	}
+
+	/* We must have the ACPI tables by the time we get here */
+
+	if (!acpi_gbl_FACP) {
+		acpi_gbl_restore_acpi_chipset = FALSE;
+
+		return (AE_NO_ACPI_TABLES);
+	}
+
+	/* Must support *some* mode! */
+/*
+	if (!(System_flags & SYS_MODES_MASK)) {
+		Restore_acpi_chipset = FALSE;
+
+		return (AE_ERROR);
+	}
+
+*/
+
+
+	switch (acpi_gbl_system_flags & SYS_MODES_MASK)
+	{
+		/* Identify current ACPI/legacy mode   */
+
+	case (SYS_MODE_ACPI):
+
+		acpi_gbl_original_mode = SYS_MODE_ACPI;
+		break;
+
+
+	case (SYS_MODE_LEGACY):
+
+		acpi_gbl_original_mode = SYS_MODE_LEGACY;
+		break;
+
+
+	case (SYS_MODE_ACPI | SYS_MODE_LEGACY):
+
+		if (acpi_hw_get_mode () == SYS_MODE_ACPI) {
+			acpi_gbl_original_mode = SYS_MODE_ACPI;
+		}
+		else {
+			acpi_gbl_original_mode = SYS_MODE_LEGACY;
+		}
+
+		break;
+	}
+
+
+	if (acpi_gbl_system_flags & SYS_MODE_ACPI) {
+		/* Target system supports ACPI mode */
+
+		/*
+		 * The purpose of this block of code is to save the initial state
+		 * of the ACPI event enable registers. An exit function will be
+		 * registered which will restore this state when the application
+		 * exits. The exit function will also clear all of the ACPI event
+		 * status bits prior to restoring the original mode.
+		 *
+		 * The location of the PM1a_evt_blk enable registers is defined as the
+		 * base of PM1a_evt_blk + PM1a_evt_blk_length / 2. Since the spec further
+		 * fully defines the PM1a_evt_blk to be a total of 4 bytes, the offset
+		 * for the enable registers is always 2 from the base. It is hard
+		 * coded here. If this changes in the spec, this code will need to
+		 * be modified. The PM1b_evt_blk behaves as expected.
+		 */
+
+		acpi_gbl_pm1_enable_register_save =
+			acpi_os_in16 ((acpi_gbl_FACP->pm1a_evt_blk + 2));
+		if (acpi_gbl_FACP->pm1b_evt_blk) {
+			acpi_gbl_pm1_enable_register_save |=
+				acpi_os_in16 ((acpi_gbl_FACP->pm1b_evt_blk + 2));
+		}
+
+
+		/*
+		 * The GPEs behave similarly, except that the length of the register
+		 * block is not fixed, so the buffer must be allocated with malloc
+		 */
+
+		if (acpi_gbl_FACP->gpe0blk && acpi_gbl_FACP->gpe0blk_len) {
+			/* GPE0 specified in FACP  */
+
+			acpi_gbl_gpe0enable_register_save =
+				acpi_cm_allocate (DIV_2 (acpi_gbl_FACP->gpe0blk_len));
+			if (!acpi_gbl_gpe0enable_register_save) {
+				return (AE_NO_MEMORY);
+			}
+
+			/* Save state of GPE0 enable bits */
+
+			for (index = 0; index < DIV_2 (acpi_gbl_FACP->gpe0blk_len); index++) {
+				acpi_gbl_gpe0enable_register_save[index] =
+					acpi_os_in8 (acpi_gbl_FACP->gpe0blk +
+					DIV_2 (acpi_gbl_FACP->gpe0blk_len));
+			}
+		}
+
+		else {
+			acpi_gbl_gpe0enable_register_save = NULL;
+		}
+
+		if (acpi_gbl_FACP->gpe1_blk && acpi_gbl_FACP->gpe1_blk_len) {
+			/* GPE1 defined */
+
+			acpi_gbl_gpe1_enable_register_save =
+				acpi_cm_allocate (DIV_2 (acpi_gbl_FACP->gpe1_blk_len));
+			if (!acpi_gbl_gpe1_enable_register_save) {
+				return (AE_NO_MEMORY);
+			}
+
+			/* save state of GPE1 enable bits */
+
+			for (index = 0; index < DIV_2 (acpi_gbl_FACP->gpe1_blk_len); index++) {
+				acpi_gbl_gpe1_enable_register_save[index] =
+					acpi_os_in8 (acpi_gbl_FACP->gpe1_blk +
+					DIV_2 (acpi_gbl_FACP->gpe1_blk_len));
+			}
+		}
+
+		else {
+			acpi_gbl_gpe1_enable_register_save = NULL;
+		}
+
+
+		/*
+		 * Verify Fixed ACPI Description Table fields,
+		 * but don't abort on any problems, just display error
+		 */
+
+		if (acpi_gbl_FACP->pm1_evt_len < 4) {
+			acpi_cm_facp_register_error ("PM1_EVT_LEN",
+					 (u32) acpi_gbl_FACP->pm1_evt_len);
+		}
+
+		if (!acpi_gbl_FACP->pm1_cnt_len) {
+			acpi_cm_facp_register_error ("PM1_CNT_LEN",
+					 (u32) acpi_gbl_FACP->pm1_cnt_len);
+		}
+
+		if (!acpi_gbl_FACP->pm1a_evt_blk) {
+			acpi_cm_facp_register_error ("PM1a_EVT_BLK", acpi_gbl_FACP->pm1a_evt_blk);
+		}
+
+		if (!acpi_gbl_FACP->pm1a_cnt_blk) {
+			acpi_cm_facp_register_error ("PM1a_CNT_BLK", acpi_gbl_FACP->pm1a_cnt_blk);
+		}
+
+		if (!acpi_gbl_FACP->pm_tmr_blk) {
+			acpi_cm_facp_register_error ("PM_TMR_BLK", acpi_gbl_FACP->pm_tmr_blk);
+		}
+
+		if (acpi_gbl_FACP->pm2_cnt_blk && !acpi_gbl_FACP->pm2_cnt_len) {
+			acpi_cm_facp_register_error ("PM2_CNT_LEN",
+					 (u32) acpi_gbl_FACP->pm2_cnt_len);
+		}
+
+		if (acpi_gbl_FACP->pm_tm_len < 4) {
+			acpi_cm_facp_register_error ("PM_TM_LEN",
+					 (u32) acpi_gbl_FACP->pm_tm_len);
+		}
+
+		/* length not multiple of 2    */
+		if (acpi_gbl_FACP->gpe0blk && (acpi_gbl_FACP->gpe0blk_len & 1)) {
+			acpi_cm_facp_register_error ("GPE0_BLK_LEN",
+					 (u32) acpi_gbl_FACP->gpe0blk_len);
+		}
+
+		/* length not multiple of 2    */
+		if (acpi_gbl_FACP->gpe1_blk && (acpi_gbl_FACP->gpe1_blk_len & 1)) {
+			acpi_cm_facp_register_error ("GPE1_BLK_LEN",
+					 (u32) acpi_gbl_FACP->gpe1_blk_len);
+		}
+	}
+
+
+	return (status);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    Acpi_cm_terminate
+ *
+ * PARAMETERS:  none
+ *
+ * RETURN:      none
+ *
+ * DESCRIPTION: free memory allocated for table storage.
+ *
+ ******************************************************************************/
+
+void
+acpi_cm_terminate (void)
+{
+
+
+	/* Free global tables, etc. */
+
+	if (acpi_gbl_gpe0enable_register_save) {
+		acpi_cm_free (acpi_gbl_gpe0enable_register_save);
+	}
+
+	if (acpi_gbl_gpe1_enable_register_save) {
+		acpi_cm_free (acpi_gbl_gpe1_enable_register_save);
+	}
+
+
+	return;
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    Acpi_cm_subsystem_shutdown
+ *
+ * PARAMETERS:  none
+ *
+ * RETURN:      none
+ *
+ * DESCRIPTION: Shutdown the various subsystems.  Don't delete the mutex
+ *              objects here -- because the AML debugger may be still running.
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+acpi_cm_subsystem_shutdown (void)
+{
+
+	/* Just exit if subsystem is already shutdown */
+
+	if (acpi_gbl_shutdown) {
+		return (AE_OK);
+	}
+
+	/* Subsystem appears active, go ahead and shut it down */
+
+	acpi_gbl_shutdown = TRUE;
+
+	/* Close the Namespace */
+
+	acpi_ns_terminate ();
+
+	/* Close the Acpi_event Handling */
+
+	acpi_ev_terminate ();
+
+	/* Close the globals */
+
+	acpi_cm_terminate ();
+
+	/* Flush the local cache(s) */
+
+	acpi_cm_delete_generic_state_cache ();
+	acpi_cm_delete_object_cache ();
+	acpi_ds_delete_walk_state_cache ();
+
+	/* Close the Parser */
+
+	/* TBD: [Restructure] Acpi_ps_terminate () */
+
+	acpi_ps_delete_parse_cache ();
+
+	/* Debug only - display leftover memory allocation, if any */
+
+	acpi_cm_dump_current_allocations (ACPI_UINT32_MAX, NULL);
+
+	BREAKPOINT3;
+
+	return (AE_OK);
+}
+
+