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Diffstat (limited to 'drivers/acpi/tables/tbconvrt.c')
| -rw-r--r-- | drivers/acpi/tables/tbconvrt.c | 553 |
1 files changed, 553 insertions, 0 deletions
diff --git a/drivers/acpi/tables/tbconvrt.c b/drivers/acpi/tables/tbconvrt.c new file mode 100644 index 000000000..624926d27 --- /dev/null +++ b/drivers/acpi/tables/tbconvrt.c @@ -0,0 +1,553 @@ +/****************************************************************************** + * + * Module Name: tbconvrt - ACPI Table conversion utilities + * $Revision: 15 $ + * + *****************************************************************************/ + +/* + * 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 "achware.h" +#include "actables.h" +#include "actbl.h" + + +#define _COMPONENT TABLE_MANAGER + MODULE_NAME ("tbconvrt") + + +/* + * Build a GAS structure from earlier ACPI table entries (V1.0 and 0.71 extensions) + * + * 1) Address space + * 2) Length in bytes -- convert to length in bits + * 3) Bit offset is zero + * 4) Reserved field is zero + * 5) Expand address to 64 bits + */ +#define ASL_BUILD_GAS_FROM_ENTRY(a,b,c,d) {a.address_space_id = (u8) d;\ + a.register_bit_width = (u8) MUL_8 (b);\ + a.register_bit_offset = 0;\ + a.reserved = 0;\ + a.address = (UINT64) c;} + + +/* ACPI V1.0 entries -- address space is always I/O */ + +#define ASL_BUILD_GAS_FROM_V1_ENTRY(a,b,c) ASL_BUILD_GAS_FROM_ENTRY(a,b,c,ADDRESS_SPACE_SYSTEM_IO) + + +/******************************************************************************* + * + * FUNCTION: Acpi_tb_convert_to_xsdt + * + * PARAMETERS: + * + * RETURN: + * + * DESCRIPTION: + * + ******************************************************************************/ + +ACPI_STATUS +acpi_tb_convert_to_xsdt ( + ACPI_TABLE_DESC *table_info, + u32 *number_of_tables) +{ + u32 table_size; + u32 pointer_size; + u32 i; + XSDT_DESCRIPTOR *new_table; + + +#ifndef _IA64 + + if (acpi_gbl_RSDP->revision < 2) { + pointer_size = sizeof (u32); + } + + else +#endif + { + pointer_size = sizeof (UINT64); + } + + /* + * Determine the number of tables pointed to by the RSDT/XSDT. + * This is defined by the ACPI Specification to be the number of + * pointers contained within the RSDT/XSDT. The size of the pointers + * is architecture-dependent. + */ + + table_size = table_info->pointer->length; + *number_of_tables = (table_size - + sizeof (ACPI_TABLE_HEADER)) / pointer_size; + + /* Compute size of the converted XSDT */ + + table_size = (*number_of_tables * sizeof (UINT64)) + sizeof (ACPI_TABLE_HEADER); + + + /* Allocate an XSDT */ + + new_table = acpi_cm_callocate (table_size); + if (!new_table) { + return (AE_NO_MEMORY); + } + + /* Copy the header and set the length */ + + MEMCPY (new_table, table_info->pointer, sizeof (ACPI_TABLE_HEADER)); + new_table->header.length = table_size; + + /* Copy the table pointers */ + + for (i = 0; i < *number_of_tables; i++) { + if (acpi_gbl_RSDP->revision < 2) { +#ifdef _IA64 + new_table->table_offset_entry[i] = + ((RSDT_DESCRIPTOR_REV071 *) table_info->pointer)->table_offset_entry[i]; +#else + new_table->table_offset_entry[i] = + ((RSDT_DESCRIPTOR_REV1 *) table_info->pointer)->table_offset_entry[i]; +#endif + } + else { + new_table->table_offset_entry[i] = + ((XSDT_DESCRIPTOR *) table_info->pointer)->table_offset_entry[i]; + } + } + + + /* Delete the original table (either mapped or in a buffer) */ + + acpi_tb_delete_single_table (table_info); + + + /* Point the table descriptor to the new table */ + + table_info->pointer = (ACPI_TABLE_HEADER *) new_table; + table_info->base_pointer = (ACPI_TABLE_HEADER *) new_table; + table_info->length = table_size; + table_info->allocation = ACPI_MEM_ALLOCATED; + + return (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: Acpi_tb_convert_table_fadt + * + * PARAMETERS: + * + * RETURN: + * + * DESCRIPTION: + * Converts BIOS supplied 1.0 and 0.71 ACPI FADT to an intermediate + * ACPI 2.0 FADT. If the BIOS supplied a 2.0 FADT then it is simply + * copied to the intermediate FADT. The ACPI CA software uses this + * intermediate FADT. Thus a significant amount of special #ifdef + * type codeing is saved. This intermediate FADT will need to be + * freed at some point. + * + ******************************************************************************/ + +ACPI_STATUS +acpi_tb_convert_table_fadt (void) +{ + +#ifdef _IA64 + FADT_DESCRIPTOR_REV071 *FADT71; + u8 pm1_address_space; + u8 pm2_address_space; + u8 pm_timer_address_space; + u8 gpe0address_space; + u8 gpe1_address_space; +#else + FADT_DESCRIPTOR_REV1 *FADT1; +#endif + + FADT_DESCRIPTOR_REV2 *FADT2; + ACPI_TABLE_DESC *table_desc; + + + /* Acpi_gbl_FADT is valid */ + /* Allocate and zero the 2.0 buffer */ + + FADT2 = acpi_cm_callocate (sizeof (FADT_DESCRIPTOR_REV2)); + if (FADT2 == NULL) { + return (AE_NO_MEMORY); + } + + + /* The ACPI FADT revision number is FADT2_REVISION_ID=3 */ + /* So, if the current table revision is less than 3 it is type 1.0 or 0.71 */ + + if (acpi_gbl_FADT->header.revision >= FADT2_REVISION_ID) { + /* We have an ACPI 2.0 FADT but we must copy it to our local buffer */ + + *FADT2 = *((FADT_DESCRIPTOR_REV2*) acpi_gbl_FADT); + + } + + else { + +#ifdef _IA64 + /* + * For the 64-bit case only, a revision ID less than V2.0 means the + * tables are the 0.71 extensions + */ + + /* The BIOS stored FADT should agree with Revision 0.71 */ + + FADT71 = (FADT_DESCRIPTOR_REV071 *) acpi_gbl_FADT; + + /* Copy the table header*/ + + FADT2->header = FADT71->header; + + /* Copy the common fields */ + + FADT2->sci_int = FADT71->sci_int; + FADT2->acpi_enable = FADT71->acpi_enable; + FADT2->acpi_disable = FADT71->acpi_disable; + FADT2->S4_bios_req = FADT71->S4_bios_req; + FADT2->plvl2_lat = FADT71->plvl2_lat; + FADT2->plvl3_lat = FADT71->plvl3_lat; + FADT2->day_alrm = FADT71->day_alrm; + FADT2->mon_alrm = FADT71->mon_alrm; + FADT2->century = FADT71->century; + FADT2->gpe1_base = FADT71->gpe1_base; + + /* + * We still use the block length registers even though + * the GAS structure should obsolete them. This is because + * these registers are byte lengths versus the GAS which + * contains a bit width + */ + FADT2->pm1_evt_len = FADT71->pm1_evt_len; + FADT2->pm1_cnt_len = FADT71->pm1_cnt_len; + FADT2->pm2_cnt_len = FADT71->pm2_cnt_len; + FADT2->pm_tm_len = FADT71->pm_tm_len; + FADT2->gpe0blk_len = FADT71->gpe0blk_len; + FADT2->gpe1_blk_len = FADT71->gpe1_blk_len; + FADT2->gpe1_base = FADT71->gpe1_base; + + /* Copy the existing 0.71 flags to 2.0. The other bits are zero.*/ + + FADT2->wb_invd = FADT71->flush_cash; + FADT2->proc_c1 = FADT71->proc_c1; + FADT2->plvl2_up = FADT71->plvl2_up; + FADT2->pwr_button = FADT71->pwr_button; + FADT2->sleep_button = FADT71->sleep_button; + FADT2->fixed_rTC = FADT71->fixed_rTC; + FADT2->rtcs4 = FADT71->rtcs4; + FADT2->tmr_val_ext = FADT71->tmr_val_ext; + FADT2->dock_cap = FADT71->dock_cap; + + + /* We should not use these next two addresses */ + /* Since our buffer is pre-zeroed nothing to do for */ + /* the next three data items in the structure */ + /* FADT2->Firmware_ctrl = 0; */ + /* FADT2->Dsdt = 0; */ + + /* System Interrupt Model isn't used in ACPI 2.0*/ + /* FADT2->Reserved1 = 0; */ + + /* This field is set by the OEM to convey the preferred */ + /* power management profile to OSPM. It doesn't have any*/ + /* 0.71 equivalence. Since we don't know what kind of */ + /* 64-bit system this is, we will pick unspecified. */ + + FADT2->prefer_PM_profile = PM_UNSPECIFIED; + + + /* Port address of SMI command port */ + /* We shouldn't use this port because IA64 doesn't */ + /* have or use SMI. It has PMI. */ + + FADT2->smi_cmd = (u32)(FADT71->smi_cmd & 0xFFFFFFFF); + + + /* processor performance state control*/ + /* The value OSPM writes to the SMI_CMD register to assume */ + /* processor performance state control responsibility. */ + /* There isn't any equivalence in 0.71 */ + /* Again this should be meaningless for IA64 */ + /* FADT2->Pstate_cnt = 0; */ + + /* The 32-bit Power management and GPE registers are */ + /* not valid in IA-64 and we are not going to use them */ + /* so leaving them pre-zeroed. */ + + /* Support for the _CST object and C States change notification.*/ + /* This data item hasn't any 0.71 equivalence so leaving it zero.*/ + /* FADT2->Cst_cnt = 0; */ + + /* number of flush strides that need to be read */ + /* No 0.71 equivalence. Leave pre-zeroed. */ + /* FADT2->Flush_size = 0; */ + + /* Processor's memory cache line width, in bytes */ + /* No 0.71 equivalence. Leave pre-zeroed. */ + /* FADT2->Flush_stride = 0; */ + + /* Processor’s duty cycle index in processor's P_CNT reg*/ + /* No 0.71 equivalence. Leave pre-zeroed. */ + /* FADT2->Duty_offset = 0; */ + + /* Processor’s duty cycle value bit width in P_CNT register.*/ + /* No 0.71 equivalence. Leave pre-zeroed. */ + /* FADT2->Duty_width = 0; */ + + + /* Since there isn't any equivalence in 0.71 */ + /* and since Big_sur had to support legacy */ + + FADT2->iapc_boot_arch = BAF_LEGACY_DEVICES; + + /* Copy to ACPI 2.0 64-BIT Extended Addresses */ + + FADT2->Xfirmware_ctrl = FADT71->firmware_ctrl; + FADT2->Xdsdt = FADT71->dsdt; + + + /* Extract the address space IDs */ + + pm1_address_space = (u8)((FADT71->address_space & PM1_BLK_ADDRESS_SPACE) >> 1); + pm2_address_space = (u8)((FADT71->address_space & PM2_CNT_BLK_ADDRESS_SPACE) >> 2); + pm_timer_address_space = (u8)((FADT71->address_space & PM_TMR_BLK_ADDRESS_SPACE) >> 3); + gpe0address_space = (u8)((FADT71->address_space & GPE0_BLK_ADDRESS_SPACE) >> 4); + gpe1_address_space = (u8)((FADT71->address_space & GPE1_BLK_ADDRESS_SPACE) >> 5); + + /* + * Convert the 0.71 (non-GAS style) Block addresses to V2.0 GAS structures, + * in this order: + * + * PM 1_a Events + * PM 1_b Events + * PM 1_a Control + * PM 1_b Control + * PM 2 Control + * PM Timer Control + * GPE Block 0 + * GPE Block 1 + */ + + ASL_BUILD_GAS_FROM_ENTRY (FADT2->Xpm1a_evt_blk, FADT71->pm1_evt_len, FADT71->pm1a_evt_blk, pm1_address_space); + ASL_BUILD_GAS_FROM_ENTRY (FADT2->Xpm1b_evt_blk, FADT71->pm1_evt_len, FADT71->pm1b_evt_blk, pm1_address_space); + ASL_BUILD_GAS_FROM_ENTRY (FADT2->Xpm1a_cnt_blk, FADT71->pm1_cnt_len, FADT71->pm1a_cnt_blk, pm1_address_space); + ASL_BUILD_GAS_FROM_ENTRY (FADT2->Xpm1b_cnt_blk, FADT71->pm1_cnt_len, FADT71->pm1b_cnt_blk, pm1_address_space); + ASL_BUILD_GAS_FROM_ENTRY (FADT2->Xpm2_cnt_blk, FADT71->pm2_cnt_len, FADT71->pm2_cnt_blk, pm2_address_space); + ASL_BUILD_GAS_FROM_ENTRY (FADT2->Xpm_tmr_blk, FADT71->pm_tm_len, FADT71->pm_tmr_blk, pm_timer_address_space); + ASL_BUILD_GAS_FROM_ENTRY (FADT2->Xgpe0blk, FADT71->gpe0blk_len, FADT71->gpe0blk, gpe0address_space); + ASL_BUILD_GAS_FROM_ENTRY (FADT2->Xgpe1_blk, FADT71->gpe1_blk_len, FADT71->gpe1_blk, gpe1_address_space); + +#else + + /* ACPI 1.0 FACS */ + + + /* The BIOS stored FADT should agree with Revision 1.0 */ + + FADT1 = (FADT_DESCRIPTOR_REV1*) acpi_gbl_FADT; + + /* + * Copy the table header and the common part of the tables + * The 2.0 table is an extension of the 1.0 table, so the + * entire 1.0 table can be copied first, then expand some + * fields to 64 bits. + */ + + MEMCPY (FADT2, FADT1, sizeof (FADT_DESCRIPTOR_REV1)); + + + /* Convert table pointers to 64-bit fields */ + + FADT2->Xfirmware_ctrl = (UINT64) FADT1->firmware_ctrl; + FADT2->Xdsdt = (UINT64) FADT1->dsdt; + + /* System Interrupt Model isn't used in ACPI 2.0*/ + /* FADT2->Reserved1 = 0; */ + + /* This field is set by the OEM to convey the preferred */ + /* power management profile to OSPM. It doesn't have any*/ + /* 1.0 equivalence. Since we don't know what kind of */ + /* 32-bit system this is, we will pick unspecified. */ + + FADT2->prefer_PM_profile = PM_UNSPECIFIED; + + + /* Processor Performance State Control. This is the value */ + /* OSPM writes to the SMI_CMD register to assume processor */ + /* performance state control responsibility. There isn't */ + /* any equivalence in 1.0. So leave it zeroed. */ + + FADT2->pstate_cnt = 0; + + + /* Support for the _CST object and C States change notification.*/ + /* This data item hasn't any 1.0 equivalence so leaving it zero.*/ + + FADT2->cst_cnt = 0; + + + /* Since there isn't any equivalence in 1.0 and since it */ + /* is highly likely that a 1.0 system has legacy support. */ + + FADT2->iapc_boot_arch = BAF_LEGACY_DEVICES; + + + /* + * Convert the V1.0 Block addresses to V2.0 GAS structures + * in this order: + * + * PM 1_a Events + * PM 1_b Events + * PM 1_a Control + * PM 1_b Control + * PM 2 Control + * PM Timer Control + * GPE Block 0 + * GPE Block 1 + */ + + ASL_BUILD_GAS_FROM_V1_ENTRY (FADT2->Xpm1a_evt_blk, FADT1->pm1_evt_len, FADT1->pm1a_evt_blk); + ASL_BUILD_GAS_FROM_V1_ENTRY (FADT2->Xpm1b_evt_blk, FADT1->pm1_evt_len, FADT1->pm1b_evt_blk); + ASL_BUILD_GAS_FROM_V1_ENTRY (FADT2->Xpm1a_cnt_blk, FADT1->pm1_cnt_len, FADT1->pm1a_cnt_blk); + ASL_BUILD_GAS_FROM_V1_ENTRY (FADT2->Xpm1b_cnt_blk, FADT1->pm1_cnt_len, FADT1->pm1b_cnt_blk); + ASL_BUILD_GAS_FROM_V1_ENTRY (FADT2->Xpm2_cnt_blk, FADT1->pm2_cnt_len, FADT1->pm2_cnt_blk); + ASL_BUILD_GAS_FROM_V1_ENTRY (FADT2->Xpm_tmr_blk, FADT1->pm_tm_len, FADT1->pm_tmr_blk); + ASL_BUILD_GAS_FROM_V1_ENTRY (FADT2->Xgpe0blk, FADT1->gpe0blk_len, FADT1->gpe0blk); + ASL_BUILD_GAS_FROM_V1_ENTRY (FADT2->Xgpe1_blk, FADT1->gpe1_blk_len, FADT1->gpe1_blk); +#endif + } + + + /* + * Global FADT pointer will point to the common V2.0 FADT + */ + acpi_gbl_FADT = FADT2; + + + /* Free the original table */ + + table_desc = &acpi_gbl_acpi_tables[ACPI_TABLE_FADT]; + acpi_tb_delete_single_table (table_desc); + + + /* Install the new table */ + + table_desc->pointer = (ACPI_TABLE_HEADER *) acpi_gbl_FADT; + table_desc->base_pointer = acpi_gbl_FADT; + table_desc->allocation = ACPI_MEM_ALLOCATED; + table_desc->length = sizeof (FADT_DESCRIPTOR_REV2); + + + /* Dump the FADT Header */ + + /* Dump the entire FADT */ + + + return (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: Acpi_tb_convert_table_facs + * + * PARAMETERS: + * + * RETURN: + * + * DESCRIPTION: + * + ******************************************************************************/ + +ACPI_STATUS +acpi_tb_build_common_facs ( + ACPI_TABLE_DESC *table_info) +{ + ACPI_COMMON_FACS *common_facs; + +#ifdef _IA64 + FACS_DESCRIPTOR_REV071 *FACS71; +#else + FACS_DESCRIPTOR_REV1 *FACS1; +#endif + + FACS_DESCRIPTOR_REV2 *FACS2; + + + /* Allocate a common FACS */ + + common_facs = acpi_cm_callocate (sizeof (ACPI_COMMON_FACS)); + if (!common_facs) { + return (AE_NO_MEMORY); + } + + + /* Copy fields to the new FACS */ + + if (acpi_gbl_RSDP->revision < 2) { +#ifdef _IA64 + /* 0.71 FACS */ + + FACS71 = (FACS_DESCRIPTOR_REV071 *) acpi_gbl_FACS; + + common_facs->global_lock = (u32 *) &(FACS71->global_lock); + common_facs->firmware_waking_vector = &FACS71->firmware_waking_vector; + common_facs->vector_width = 64; +#else + /* ACPI 1.0 FACS */ + + FACS1 = (FACS_DESCRIPTOR_REV1 *) acpi_gbl_FACS; + + common_facs->global_lock = &(FACS1->global_lock); + common_facs->firmware_waking_vector = (UINT64 *) &FACS1->firmware_waking_vector; + common_facs->vector_width = 32; + +#endif + } + + else { + /* ACPI 2.0 FACS */ + + FACS2 = (FACS_DESCRIPTOR_REV2 *) acpi_gbl_FACS; + + common_facs->global_lock = &(FACS2->global_lock); + common_facs->firmware_waking_vector = &FACS2->Xfirmware_waking_vector; + common_facs->vector_width = 64; + } + + + /* Set the global FACS pointer to point to the common FACS */ + + + acpi_gbl_FACS = common_facs; + + return (AE_OK); +} + + |