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-rw-r--r--drivers/acpi/table.c264
1 files changed, 24 insertions, 240 deletions
diff --git a/drivers/acpi/table.c b/drivers/acpi/table.c
index 5123b94ff..8379b4204 100644
--- a/drivers/acpi/table.c
+++ b/drivers/acpi/table.c
@@ -1,5 +1,5 @@
/*
- * tables.c - ACPI tables, chipset, and errata handling
+ * table.c - ACPI tables, chipset, and errata handling
*
* Copyright (C) 2000 Andrew Henroid
*
@@ -27,250 +27,39 @@
#include "driver.h"
#define _COMPONENT OS_DEPENDENT
- MODULE_NAME ("tables")
+ MODULE_NAME ("table")
-struct acpi_facp acpi_facp;
-
-#define ACPI_DUMMY_CHECKSUM 9
-#define ACPI_DUMMY_PBLK 51
-
-static u8 acpi_dummy_dsdt[] =
-{
- 0x44, 0x53, 0x44, 0x54, // "DSDT"
- 0x38, 0x00, 0x00, 0x00, // length
- 0x01, // revision
- 0x00, // checksum
- 0x4c, 0x49, 0x4e, 0x55, 0x58, 0x00, // "LINUX"
- 0x44, 0x55, 0x4d, 0x4d, 0x59, 0x00, 0x00, 0x00, // "DUMMY"
- 0x01, 0x00, 0x00, 0x00, // OEM rev
- 0x4c, 0x4e, 0x55, 0x58, // "LNUX"
- 0x01, 0x00, 0x00, 0x00, // creator rev
- 0x10, // Scope
- 0x13, // PkgLength
- 0x5c, 0x5f, 0x50, 0x52, 0x5f, // \_PR_
- 0x5b, 0x83, // Processor
- 0x0b, // PkgLength
- 0x43, 0x50, 0x55, 0x30, // CPU0
- 0x00, // ID
- 0x00, 0x00, 0x00, 0x00, // PBLK
- 0x06 // PBLK size
-};
-
-/*
- * Calculate and set ACPI table checksum
- */
-static void
-acpi_set_checksum(u8 *table, int size)
-{
- int i, sum = 0;
- for (i = 0; i < size; i++)
- sum += (int) table[i];
- sum = (0x100 - ((sum - table[ACPI_DUMMY_CHECKSUM]) & 0xff));
- table[ACPI_DUMMY_CHECKSUM] = sum;
-}
-
-/*
- * Init PIIX4 device, create a fake FACP
- */
-static int
-acpi_init_piix4(struct pci_dev *dev)
-{
- u32 base, pblk;
- u16 cmd;
- u8 pmregmisc;
-
- pci_read_config_word(dev, PCI_COMMAND, &cmd);
- if (!(cmd & PCI_COMMAND_IO))
- return -ENODEV;
-
- pci_read_config_byte(dev, ACPI_PIIX4_PMREGMISC, &pmregmisc);
- if (!(pmregmisc & ACPI_PIIX4_PMIOSE))
- return -ENODEV;
-
- base = pci_resource_start (dev, PCI_BRIDGE_RESOURCES);
- if (!base)
- return -ENODEV;
-
- printk(KERN_INFO "ACPI: found \"%s\" at 0x%04x\n", dev->name, base);
-
- memset(&acpi_facp, 0, sizeof(acpi_facp));
- acpi_facp.hdr.signature = ACPI_FACP_SIG;
- acpi_facp.hdr.length = sizeof(acpi_facp);
- acpi_facp.int_model = ACPI_PIIX4_INT_MODEL;
- acpi_facp.sci_int = ACPI_PIIX4_SCI_INT;
- acpi_facp.smi_cmd = ACPI_PIIX4_SMI_CMD;
- acpi_facp.acpi_enable = ACPI_PIIX4_ACPI_ENABLE;
- acpi_facp.acpi_disable = ACPI_PIIX4_ACPI_DISABLE;
- acpi_facp.s4bios_req = ACPI_PIIX4_S4BIOS_REQ;
- acpi_facp.pm1a_evt = base + ACPI_PIIX4_PM1_EVT;
- acpi_facp.pm1a_cnt = base + ACPI_PIIX4_PM1_CNT;
- acpi_facp.pm2_cnt = ACPI_PIIX4_PM2_CNT;
- acpi_facp.pm_tmr = base + ACPI_PIIX4_PM_TMR;
- acpi_facp.gpe0 = base + ACPI_PIIX4_GPE0;
- acpi_facp.pm1_evt_len = ACPI_PIIX4_PM1_EVT_LEN;
- acpi_facp.pm1_cnt_len = ACPI_PIIX4_PM1_CNT_LEN;
- acpi_facp.pm2_cnt_len = ACPI_PIIX4_PM2_CNT_LEN;
- acpi_facp.pm_tm_len = ACPI_PIIX4_PM_TM_LEN;
- acpi_facp.gpe0_len = ACPI_PIIX4_GPE0_LEN;
- acpi_facp.p_lvl2_lat = (__u16) ACPI_INFINITE_LAT;
- acpi_facp.p_lvl3_lat = (__u16) ACPI_INFINITE_LAT;
-
- acpi_set_checksum((u8*) &acpi_facp, sizeof(acpi_facp));
- acpi_load_table((ACPI_TABLE_HEADER*) &acpi_facp);
-
- pblk = base + ACPI_PIIX4_P_BLK;
- memcpy(acpi_dummy_dsdt + ACPI_DUMMY_PBLK, &pblk, sizeof(pblk));
- acpi_set_checksum(acpi_dummy_dsdt, sizeof(acpi_dummy_dsdt));
- acpi_load_table((ACPI_TABLE_HEADER*) acpi_dummy_dsdt);
-
- return 0;
-}
+FADT_DESCRIPTOR acpi_fadt;
/*
- * Init VIA ACPI device and create a fake FACP
+ * Fetch the fadt information
*/
static int
-acpi_init_via(struct pci_dev *dev)
-{
- u32 base, pblk;
- u8 tmp, irq;
-
- pci_read_config_byte(dev, 0x41, &tmp);
- if (!(tmp & 0x80))
- return -ENODEV;
-
- base = pci_resource_start(dev, PCI_BRIDGE_RESOURCES);
- if (!base) {
- base = pci_resource_start(dev, PCI_BASE_ADDRESS_4);
- if (!base)
- return -ENODEV;
- }
-
- pci_read_config_byte(dev, 0x42, &irq);
-
- printk(KERN_INFO "ACPI: found \"%s\" at 0x%04x\n", dev->name, base);
-
- memset(&acpi_facp, 0, sizeof(acpi_facp));
- acpi_facp.hdr.signature = ACPI_FACP_SIG;
- acpi_facp.hdr.length = sizeof(acpi_facp);
- acpi_facp.int_model = ACPI_VIA_INT_MODEL;
- acpi_facp.sci_int = irq;
- acpi_facp.smi_cmd = base + ACPI_VIA_SMI_CMD;
- acpi_facp.acpi_enable = ACPI_VIA_ACPI_ENABLE;
- acpi_facp.acpi_disable = ACPI_VIA_ACPI_DISABLE;
- acpi_facp.pm1a_evt = base + ACPI_VIA_PM1_EVT;
- acpi_facp.pm1a_cnt = base + ACPI_VIA_PM1_CNT;
- acpi_facp.pm_tmr = base + ACPI_VIA_PM_TMR;
- acpi_facp.gpe0 = base + ACPI_VIA_GPE0;
-
- acpi_facp.pm1_evt_len = ACPI_VIA_PM1_EVT_LEN;
- acpi_facp.pm1_cnt_len = ACPI_VIA_PM1_CNT_LEN;
- acpi_facp.pm_tm_len = ACPI_VIA_PM_TM_LEN;
- acpi_facp.gpe0_len = ACPI_VIA_GPE0_LEN;
- acpi_facp.p_lvl2_lat = (__u16) ACPI_INFINITE_LAT;
- acpi_facp.p_lvl3_lat = (__u16) ACPI_INFINITE_LAT;
-
- acpi_facp.duty_offset = ACPI_VIA_DUTY_OFFSET;
- acpi_facp.duty_width = ACPI_VIA_DUTY_WIDTH;
-
- acpi_facp.day_alarm = ACPI_VIA_DAY_ALARM;
- acpi_facp.mon_alarm = ACPI_VIA_MON_ALARM;
- acpi_facp.century = ACPI_VIA_CENTURY;
-
- acpi_set_checksum((u8*) &acpi_facp, sizeof(acpi_facp));
- acpi_load_table((ACPI_TABLE_HEADER*) &acpi_facp);
-
- pblk = base + ACPI_VIA_P_BLK;
- memcpy(acpi_dummy_dsdt + ACPI_DUMMY_PBLK, &pblk, sizeof(pblk));
- acpi_set_checksum(acpi_dummy_dsdt, sizeof(acpi_dummy_dsdt));
- acpi_load_table((ACPI_TABLE_HEADER*) acpi_dummy_dsdt);
-
- return 0;
-}
-
-typedef enum
-{
- CH_UNKNOWN = 0,
- CH_INTEL_PIIX4,
- CH_VIA_586,
- CH_VIA_686A,
-} acpi_chip_t;
-
-/* indexed by value of each enum in acpi_chip_t */
-const static struct
-{
- int (*chip_init)(struct pci_dev *dev);
-} acpi_chip_info[] =
-{
- {NULL,},
- {acpi_init_piix4},
- {acpi_init_via},
- {acpi_init_via},
-};
-
-static struct pci_device_id acpi_pci_tbl[] =
-{
- {0x8086, 0x7113, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_INTEL_PIIX4},
- {0x1106, 0x3040, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_VIA_586},
- {0x1106, 0x3057, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_VIA_686A},
- {0,} /* terminate list */
-};
-
-static int
-acpi_probe(struct pci_dev *dev, const struct pci_device_id *id)
-{
- return acpi_chip_info[id->driver_data].chip_init(dev);
-}
-
-static struct pci_driver acpi_driver =
-{
- name: "acpi",
- id_table: acpi_pci_tbl,
- probe: acpi_probe,
-};
-static int acpi_driver_registered = 0;
-
-/*
- * Locate a known ACPI chipset
- */
-static int
-acpi_find_chipset(void)
-{
- if (pci_register_driver(&acpi_driver) < 1)
- return -ENODEV;
- acpi_driver_registered = 1;
- return 0;
-}
-
-/*
- * Fetch the FACP information
- */
-static int
-acpi_fetch_facp(void)
+acpi_fetch_fadt(void)
{
ACPI_BUFFER buffer;
- memset(&acpi_facp, 0, sizeof(acpi_facp));
- buffer.pointer = &acpi_facp;
- buffer.length = sizeof(acpi_facp);
- if (!ACPI_SUCCESS(acpi_get_table(ACPI_TABLE_FACP, 1, &buffer))) {
- printk(KERN_ERR "ACPI: missing FACP\n");
+ memset(&acpi_fadt, 0, sizeof(acpi_fadt));
+ buffer.pointer = &acpi_fadt;
+ buffer.length = sizeof(acpi_fadt);
+ if (!ACPI_SUCCESS(acpi_get_table(ACPI_TABLE_FADT, 1, &buffer))) {
+ printk(KERN_ERR "ACPI: missing fadt\n");
return -ENODEV;
}
- if (acpi_facp.p_lvl2_lat
- && acpi_facp.p_lvl2_lat <= ACPI_MAX_P_LVL2_LAT) {
+ if (acpi_fadt.plvl2_lat
+ && acpi_fadt.plvl2_lat <= ACPI_MAX_P_LVL2_LAT) {
acpi_c2_exit_latency
- = ACPI_uS_TO_TMR_TICKS(acpi_facp.p_lvl2_lat);
+ = ACPI_MICROSEC_TO_TMR_TICKS(acpi_fadt.plvl2_lat);
acpi_c2_enter_latency
- = ACPI_uS_TO_TMR_TICKS(ACPI_TMR_HZ / 1000);
+ = ACPI_MICROSEC_TO_TMR_TICKS(ACPI_TMR_HZ / 1000);
}
- if (acpi_facp.p_lvl3_lat
- && acpi_facp.p_lvl3_lat <= ACPI_MAX_P_LVL3_LAT) {
+ if (acpi_fadt.plvl3_lat
+ && acpi_fadt.plvl3_lat <= ACPI_MAX_P_LVL3_LAT) {
acpi_c3_exit_latency
- = ACPI_uS_TO_TMR_TICKS(acpi_facp.p_lvl3_lat);
+ = ACPI_MICROSEC_TO_TMR_TICKS(acpi_fadt.plvl3_lat);
acpi_c3_enter_latency
- = ACPI_uS_TO_TMR_TICKS(acpi_facp.p_lvl3_lat * 5);
+ = ACPI_MICROSEC_TO_TMR_TICKS(acpi_fadt.plvl3_lat * 5);
}
return 0;
@@ -280,24 +69,19 @@ acpi_fetch_facp(void)
* Find and load ACPI tables
*/
int
-acpi_load_tables(void)
+acpi_find_and_load_tables(u64 rsdp)
{
- if (ACPI_SUCCESS(acpi_load_firmware_tables()))
+ if (ACPI_SUCCESS(acpi_load_tables(rsdp)))
{
- printk(KERN_INFO "ACPI: support found\n");
+ printk(KERN_INFO "ACPI: System description tables loaded\n");
}
- else if (acpi_find_chipset()) {
- acpi_terminate();
- return -1;
- }
-
- if (acpi_fetch_facp()) {
+ else {
+ printk(KERN_INFO "ACPI: System description table load failed\n");
acpi_terminate();
return -1;
}
- if (!ACPI_SUCCESS(acpi_load_namespace())) {
- printk(KERN_ERR "ACPI: namespace load failed\n");
+ if (acpi_fetch_fadt()) {
acpi_terminate();
return -1;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-20 08:39:59 +0000