X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Facpi%2Ftables%2Ftbxface.c;h=5ba9303293ad968c4366ca49c4044291cd4bf10c;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=c92e7150865172fd1e42d851902c5a0dd94abe26;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git diff --git a/drivers/acpi/tables/tbxface.c b/drivers/acpi/tables/tbxface.c index c92e71508..5ba930329 100644 --- a/drivers/acpi/tables/tbxface.c +++ b/drivers/acpi/tables/tbxface.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2004, R. Byron Moore + * Copyright (C) 2000 - 2006, R. Byron Moore * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -42,15 +42,12 @@ * POSSIBILITY OF SUCH DAMAGES. */ - #include #include #include - #define _COMPONENT ACPI_TABLES - ACPI_MODULE_NAME ("tbxface") - +ACPI_MODULE_NAME("tbxface") /******************************************************************************* * @@ -64,24 +61,19 @@ * provided RSDT * ******************************************************************************/ - -acpi_status -acpi_load_tables (void) +acpi_status acpi_load_tables(void) { - struct acpi_pointer rsdp_address; - acpi_status status; - - - ACPI_FUNCTION_TRACE ("acpi_load_tables"); + struct acpi_pointer rsdp_address; + acpi_status status; + ACPI_FUNCTION_TRACE(acpi_load_tables); /* Get the RSDP */ - status = acpi_os_get_root_pointer (ACPI_LOGICAL_ADDRESSING, - &rsdp_address); - if (ACPI_FAILURE (status)) { - ACPI_REPORT_ERROR (("acpi_load_tables: Could not get RSDP, %s\n", - acpi_format_exception (status))); + status = acpi_os_get_root_pointer(ACPI_LOGICAL_ADDRESSING, + &rsdp_address); + if (ACPI_FAILURE(status)) { + ACPI_EXCEPTION((AE_INFO, status, "Could not get the RSDP")); goto error_exit; } @@ -89,53 +81,47 @@ acpi_load_tables (void) acpi_gbl_table_flags = rsdp_address.pointer_type; - status = acpi_tb_verify_rsdp (&rsdp_address); - if (ACPI_FAILURE (status)) { - ACPI_REPORT_ERROR (("acpi_load_tables: RSDP Failed validation: %s\n", - acpi_format_exception (status))); + status = acpi_tb_verify_rsdp(&rsdp_address); + if (ACPI_FAILURE(status)) { + ACPI_EXCEPTION((AE_INFO, status, "During RSDP validation")); goto error_exit; } /* Get the RSDT via the RSDP */ - status = acpi_tb_get_table_rsdt (); - if (ACPI_FAILURE (status)) { - ACPI_REPORT_ERROR (("acpi_load_tables: Could not load RSDT: %s\n", - acpi_format_exception (status))); + status = acpi_tb_get_table_rsdt(); + if (ACPI_FAILURE(status)) { + ACPI_EXCEPTION((AE_INFO, status, "Could not load RSDT")); goto error_exit; } /* Now get the tables needed by this subsystem (FADT, DSDT, etc.) */ - status = acpi_tb_get_required_tables (); - if (ACPI_FAILURE (status)) { - ACPI_REPORT_ERROR (("acpi_load_tables: Error getting required tables (DSDT/FADT/FACS): %s\n", - acpi_format_exception (status))); + status = acpi_tb_get_required_tables(); + if (ACPI_FAILURE(status)) { + ACPI_EXCEPTION((AE_INFO, status, + "Could not get all required tables (DSDT/FADT/FACS)")); goto error_exit; } - ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI Tables successfully acquired\n")); - + ACPI_DEBUG_PRINT((ACPI_DB_INIT, "ACPI Tables successfully acquired\n")); /* Load the namespace from the tables */ - status = acpi_ns_load_namespace (); - if (ACPI_FAILURE (status)) { - ACPI_REPORT_ERROR (("acpi_load_tables: Could not load namespace: %s\n", - acpi_format_exception (status))); + status = acpi_ns_load_namespace(); + if (ACPI_FAILURE(status)) { + ACPI_EXCEPTION((AE_INFO, status, "Could not load namespace")); goto error_exit; } - return_ACPI_STATUS (AE_OK); - - -error_exit: - ACPI_REPORT_ERROR (("acpi_load_tables: Could not load tables: %s\n", - acpi_format_exception (status))); + return_ACPI_STATUS(AE_OK); - return_ACPI_STATUS (status); + error_exit: + ACPI_EXCEPTION((AE_INFO, status, "Could not load tables")); + return_ACPI_STATUS(status); } +ACPI_EXPORT_SYMBOL(acpi_load_tables) /******************************************************************************* * @@ -147,128 +133,192 @@ error_exit: * RETURN: Status * * DESCRIPTION: This function is called to load a table from the caller's - * buffer. The buffer must contain an entire ACPI Table including - * a valid header. The header fields will be verified, and if it + * buffer. The buffer must contain an entire ACPI Table including + * a valid header. The header fields will be verified, and if it * is determined that the table is invalid, the call will fail. * ******************************************************************************/ - -acpi_status -acpi_load_table ( - struct acpi_table_header *table_ptr) +acpi_status acpi_load_table(struct acpi_table_header *table_ptr) { - acpi_status status; - struct acpi_table_desc table_info; - struct acpi_pointer address; - - - ACPI_FUNCTION_TRACE ("acpi_load_table"); + acpi_status status; + struct acpi_table_desc table_info; + struct acpi_pointer address; + ACPI_FUNCTION_TRACE(acpi_load_table); if (!table_ptr) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_PARAMETER); } /* Copy the table to a local buffer */ - address.pointer_type = ACPI_LOGICAL_POINTER | ACPI_LOGICAL_ADDRESSING; + address.pointer_type = ACPI_LOGICAL_POINTER | ACPI_LOGICAL_ADDRESSING; address.pointer.logical = table_ptr; - status = acpi_tb_get_table_body (&address, table_ptr, &table_info); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_tb_get_table_body(&address, table_ptr, &table_info); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + /* Check signature for a valid table type */ + + status = acpi_tb_recognize_table(&table_info, ACPI_TABLE_ALL); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } /* Install the new table into the local data structures */ - status = acpi_tb_install_table (&table_info); - if (ACPI_FAILURE (status)) { + status = acpi_tb_install_table(&table_info); + if (ACPI_FAILURE(status)) { + if (status == AE_ALREADY_EXISTS) { + + /* Table already exists, no error */ + + status = AE_OK; + } + /* Free table allocated by acpi_tb_get_table_body */ - acpi_tb_delete_single_table (&table_info); - return_ACPI_STATUS (status); + acpi_tb_delete_single_table(&table_info); + return_ACPI_STATUS(status); } /* Convert the table to common format if necessary */ switch (table_info.type) { - case ACPI_TABLE_FADT: + case ACPI_TABLE_ID_FADT: - status = acpi_tb_convert_table_fadt (); + status = acpi_tb_convert_table_fadt(); break; - case ACPI_TABLE_FACS: + case ACPI_TABLE_ID_FACS: - status = acpi_tb_build_common_facs (&table_info); + status = acpi_tb_build_common_facs(&table_info); break; default: /* Load table into namespace if it contains executable AML */ - status = acpi_ns_load_table (table_info.installed_desc, acpi_gbl_root_node); + status = + acpi_ns_load_table(table_info.installed_desc, + acpi_gbl_root_node); break; } - if (ACPI_FAILURE (status)) { + if (ACPI_FAILURE(status)) { + /* Uninstall table and free the buffer */ - (void) acpi_tb_uninstall_table (table_info.installed_desc); + (void)acpi_tb_uninstall_table(table_info.installed_desc); } - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } +ACPI_EXPORT_SYMBOL(acpi_load_table) /******************************************************************************* * - * FUNCTION: acpi_unload_table + * FUNCTION: acpi_unload_table_id * * PARAMETERS: table_type - Type of table to be unloaded + * id - Owner ID of the table to be removed. * * RETURN: Status * - * DESCRIPTION: This routine is used to force the unload of a table + * DESCRIPTION: This routine is used to force the unload of a table (by id) * ******************************************************************************/ - -acpi_status -acpi_unload_table ( - acpi_table_type table_type) +acpi_status acpi_unload_table_id(acpi_table_type table_type, acpi_owner_id id) { - struct acpi_table_desc *table_desc; + struct acpi_table_desc *table_desc; + acpi_status status; + ACPI_FUNCTION_TRACE(acpi_unload_table); - ACPI_FUNCTION_TRACE ("acpi_unload_table"); + /* Parameter validation */ + if (table_type > ACPI_TABLE_ID_MAX) + return_ACPI_STATUS(AE_BAD_PARAMETER); + /* Find table from the requested type list */ + table_desc = acpi_gbl_table_lists[table_type].next; + while (table_desc && table_desc->owner_id != id) + table_desc = table_desc->next; + + if (!table_desc) + return_ACPI_STATUS(AE_NOT_EXIST); + + /* + * Delete all namespace objects owned by this table. Note that these + * objects can appear anywhere in the namespace by virtue of the AML + * "Scope" operator. Thus, we need to track ownership by an ID, not + * simply a position within the hierarchy + */ + acpi_ns_delete_namespace_by_owner(table_desc->owner_id); + + status = acpi_ut_acquire_mutex(ACPI_MTX_TABLES); + if (ACPI_FAILURE(status)) + return_ACPI_STATUS(status); + + (void)acpi_tb_uninstall_table(table_desc); + + (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); + + return_ACPI_STATUS(AE_OK); +} + +ACPI_EXPORT_SYMBOL(acpi_unload_table_id) + +#ifdef ACPI_FUTURE_USAGE +/******************************************************************************* + * + * FUNCTION: acpi_unload_table + * + * PARAMETERS: table_type - Type of table to be unloaded + * + * RETURN: Status + * + * DESCRIPTION: This routine is used to force the unload of a table + * + ******************************************************************************/ +acpi_status acpi_unload_table(acpi_table_type table_type) +{ + struct acpi_table_desc *table_desc; + + ACPI_FUNCTION_TRACE(acpi_unload_table); /* Parameter validation */ - if (table_type > ACPI_TABLE_MAX) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + if (table_type > ACPI_TABLE_ID_MAX) { + return_ACPI_STATUS(AE_BAD_PARAMETER); } - /* Find all tables of the requested type */ table_desc = acpi_gbl_table_lists[table_type].next; + if (!table_desc) { + return_ACPI_STATUS(AE_NOT_EXIST); + } + while (table_desc) { /* - * Delete all namespace entries owned by this table. Note that these - * entries can appear anywhere in the namespace by virtue of the AML - * "Scope" operator. Thus, we need to track ownership by an ID, not + * Delete all namespace objects owned by this table. Note that these + * objects can appear anywhere in the namespace by virtue of the AML + * "Scope" operator. Thus, we need to track ownership by an ID, not * simply a position within the hierarchy */ - acpi_ns_delete_namespace_by_owner (table_desc->table_id); - + acpi_ns_delete_namespace_by_owner(table_desc->owner_id); table_desc = table_desc->next; } /* Delete (or unmap) all tables of this type */ - acpi_tb_delete_tables_by_type (table_type); - return_ACPI_STATUS (AE_OK); + acpi_tb_delete_tables_by_type(table_type); + return_ACPI_STATUS(AE_OK); } +ACPI_EXPORT_SYMBOL(acpi_unload_table) /******************************************************************************* * @@ -280,68 +330,62 @@ acpi_unload_table ( * see acpi_gbl_acpi_table_flag * out_table_header - pointer to the struct acpi_table_header if successful * - * DESCRIPTION: This function is called to get an ACPI table header. The caller + * DESCRIPTION: This function is called to get an ACPI table header. The caller * supplies an pointer to a data area sufficient to contain an ACPI * struct acpi_table_header structure. * * The header contains a length field that can be used to determine - * the size of the buffer needed to contain the entire table. This + * the size of the buffer needed to contain the entire table. This * function is not valid for the RSD PTR table since it does not * have a standard header and is fixed length. * ******************************************************************************/ - acpi_status -acpi_get_table_header ( - acpi_table_type table_type, - u32 instance, - struct acpi_table_header *out_table_header) +acpi_get_table_header(acpi_table_type table_type, + u32 instance, struct acpi_table_header *out_table_header) { - struct acpi_table_header *tbl_ptr; - acpi_status status; - + struct acpi_table_header *tbl_ptr; + acpi_status status; - ACPI_FUNCTION_TRACE ("acpi_get_table_header"); + ACPI_FUNCTION_TRACE(acpi_get_table_header); - - if ((instance == 0) || - (table_type == ACPI_TABLE_RSDP) || - (!out_table_header)) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + if ((instance == 0) || + (table_type == ACPI_TABLE_ID_RSDP) || (!out_table_header)) { + return_ACPI_STATUS(AE_BAD_PARAMETER); } /* Check the table type and instance */ - if ((table_type > ACPI_TABLE_MAX) || - (ACPI_IS_SINGLE_TABLE (acpi_gbl_table_data[table_type].flags) && - instance > 1)) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + if ((table_type > ACPI_TABLE_ID_MAX) || + (ACPI_IS_SINGLE_TABLE(acpi_gbl_table_data[table_type].flags) && + instance > 1)) { + return_ACPI_STATUS(AE_BAD_PARAMETER); } - /* Get a pointer to the entire table */ - status = acpi_tb_get_table_ptr (table_type, instance, &tbl_ptr); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_tb_get_table_ptr(table_type, instance, &tbl_ptr); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } - /* - * The function will return a NULL pointer if the table is not loaded - */ + /* The function will return a NULL pointer if the table is not loaded */ + if (tbl_ptr == NULL) { - return_ACPI_STATUS (AE_NOT_EXIST); + return_ACPI_STATUS(AE_NOT_EXIST); } - /* - * Copy the header to the caller's buffer - */ - ACPI_MEMCPY ((void *) out_table_header, (void *) tbl_ptr, - sizeof (struct acpi_table_header)); + /* Copy the header to the caller's buffer */ + + ACPI_MEMCPY(ACPI_CAST_PTR(void, out_table_header), + ACPI_CAST_PTR(void, tbl_ptr), + sizeof(struct acpi_table_header)); - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } +ACPI_EXPORT_SYMBOL(acpi_get_table_header) +#endif /* ACPI_FUTURE_USAGE */ /******************************************************************************* * @@ -356,55 +400,49 @@ acpi_get_table_header ( * * RETURN: Status * - * DESCRIPTION: This function is called to get an ACPI table. The caller + * DESCRIPTION: This function is called to get an ACPI table. The caller * supplies an out_buffer large enough to contain the entire ACPI - * table. The caller should call the acpi_get_table_header function - * first to determine the buffer size needed. Upon completion + * table. The caller should call the acpi_get_table_header function + * first to determine the buffer size needed. Upon completion * the out_buffer->Length field will indicate the number of bytes * copied into the out_buffer->buf_ptr buffer. This table will be * a complete table including the header. * ******************************************************************************/ - acpi_status -acpi_get_table ( - acpi_table_type table_type, - u32 instance, - struct acpi_buffer *ret_buffer) +acpi_get_table(acpi_table_type table_type, + u32 instance, struct acpi_buffer *ret_buffer) { - struct acpi_table_header *tbl_ptr; - acpi_status status; - acpi_size table_length; - - - ACPI_FUNCTION_TRACE ("acpi_get_table"); + struct acpi_table_header *tbl_ptr; + acpi_status status; + acpi_size table_length; + ACPI_FUNCTION_TRACE(acpi_get_table); /* Parameter validation */ if (instance == 0) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_PARAMETER); } - status = acpi_ut_validate_buffer (ret_buffer); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ut_validate_buffer(ret_buffer); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } /* Check the table type and instance */ - if ((table_type > ACPI_TABLE_MAX) || - (ACPI_IS_SINGLE_TABLE (acpi_gbl_table_data[table_type].flags) && - instance > 1)) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + if ((table_type > ACPI_TABLE_ID_MAX) || + (ACPI_IS_SINGLE_TABLE(acpi_gbl_table_data[table_type].flags) && + instance > 1)) { + return_ACPI_STATUS(AE_BAD_PARAMETER); } - /* Get a pointer to the entire table */ - status = acpi_tb_get_table_ptr (table_type, instance, &tbl_ptr); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_tb_get_table_ptr(table_type, instance, &tbl_ptr); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } /* @@ -412,32 +450,33 @@ acpi_get_table ( * table is not loaded. */ if (tbl_ptr == NULL) { - return_ACPI_STATUS (AE_NOT_EXIST); + return_ACPI_STATUS(AE_NOT_EXIST); } /* Get the table length */ - if (table_type == ACPI_TABLE_RSDP) { - /* - * RSD PTR is the only "table" without a header - */ - table_length = sizeof (struct rsdp_descriptor); - } - else { + if (table_type == ACPI_TABLE_ID_RSDP) { + + /* RSD PTR is the only "table" without a header */ + + table_length = sizeof(struct rsdp_descriptor); + } else { table_length = (acpi_size) tbl_ptr->length; } /* Validate/Allocate/Clear caller buffer */ - status = acpi_ut_initialize_buffer (ret_buffer, table_length); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ut_initialize_buffer(ret_buffer, table_length); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } /* Copy the table to the buffer */ - ACPI_MEMCPY ((void *) ret_buffer->pointer, (void *) tbl_ptr, table_length); - return_ACPI_STATUS (AE_OK); -} + ACPI_MEMCPY(ACPI_CAST_PTR(void, ret_buffer->pointer), + ACPI_CAST_PTR(void, tbl_ptr), table_length); + return_ACPI_STATUS(AE_OK); +} +ACPI_EXPORT_SYMBOL(acpi_get_table)