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If SMM is not supported, ACPI fixed hardware doesn't support legacy-mode. ACPI-only platform. Where SCI_EN in PM1_CNT register is always set. The bit tells OS legacy mode(SCI_EN cleared) or ACPI mode(SCI_EN set). With the next patch (setting fadt.smi_cmd = 0 when smm isn't enabled), guest Linux tries to switch to ACPI mode, finds smi_cmd = 0, and then fails to initialize acpi subsystem. This patch proactively fixes it. This patch changes guest ABI. To keep compatibility, use "smm-compat" introduced by earlier patch. If the property is true, disable new behavior. ACPI spec 4.8.10.1 PM1 Event Grouping PM1 Eanble Registers > For ACPI-only platforms (where SCI_EN is always set) Reviewed-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com> Message-Id: <500f62081626997e46f96377393d3662211763a8.1613615732.git.isaku.yamahata@intel.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
202 lines
6.2 KiB
C
202 lines
6.2 KiB
C
#ifndef QEMU_HW_ACPI_H
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#define QEMU_HW_ACPI_H
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/*
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* Copyright (c) 2009 Isaku Yamahata <yamahata at valinux co jp>
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* VA Linux Systems Japan K.K.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/notify.h"
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#include "exec/memory.h"
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#include "hw/acpi/acpi_dev_interface.h"
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/*
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* current device naming scheme supports up to 256 memory devices
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*/
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#define ACPI_MAX_RAM_SLOTS 256
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/* from linux include/acpi/actype.h */
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/* Default ACPI register widths */
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#define ACPI_GPE_REGISTER_WIDTH 8
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#define ACPI_PM1_REGISTER_WIDTH 16
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#define ACPI_PM2_REGISTER_WIDTH 8
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#define ACPI_PM_TIMER_WIDTH 32
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/* PC-style peripherals (also used by other machines). */
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#define ACPI_PM_PROP_S3_DISABLED "disable_s3"
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#define ACPI_PM_PROP_S4_DISABLED "disable_s4"
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#define ACPI_PM_PROP_S4_VAL "s4_val"
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#define ACPI_PM_PROP_SCI_INT "sci_int"
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#define ACPI_PM_PROP_ACPI_ENABLE_CMD "acpi_enable_cmd"
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#define ACPI_PM_PROP_ACPI_DISABLE_CMD "acpi_disable_cmd"
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#define ACPI_PM_PROP_PM_IO_BASE "pm_io_base"
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#define ACPI_PM_PROP_GPE0_BLK "gpe0_blk"
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#define ACPI_PM_PROP_GPE0_BLK_LEN "gpe0_blk_len"
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/* PM Timer ticks per second (HZ) */
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#define PM_TIMER_FREQUENCY 3579545
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/* ACPI fixed hardware registers */
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/* from linux/drivers/acpi/acpica/aclocal.h */
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/* Masks used to access the bit_registers */
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/* PM1x_STS */
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#define ACPI_BITMASK_TIMER_STATUS 0x0001
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#define ACPI_BITMASK_BUS_MASTER_STATUS 0x0010
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#define ACPI_BITMASK_GLOBAL_LOCK_STATUS 0x0020
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#define ACPI_BITMASK_POWER_BUTTON_STATUS 0x0100
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#define ACPI_BITMASK_SLEEP_BUTTON_STATUS 0x0200
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#define ACPI_BITMASK_RT_CLOCK_STATUS 0x0400
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#define ACPI_BITMASK_PCIEXP_WAKE_STATUS 0x4000 /* ACPI 3.0 */
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#define ACPI_BITMASK_WAKE_STATUS 0x8000
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#define ACPI_BITMASK_ALL_FIXED_STATUS (\
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ACPI_BITMASK_TIMER_STATUS | \
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ACPI_BITMASK_BUS_MASTER_STATUS | \
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ACPI_BITMASK_GLOBAL_LOCK_STATUS | \
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ACPI_BITMASK_POWER_BUTTON_STATUS | \
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ACPI_BITMASK_SLEEP_BUTTON_STATUS | \
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ACPI_BITMASK_RT_CLOCK_STATUS | \
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ACPI_BITMASK_WAKE_STATUS)
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/* PM1x_EN */
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#define ACPI_BITMASK_TIMER_ENABLE 0x0001
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#define ACPI_BITMASK_GLOBAL_LOCK_ENABLE 0x0020
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#define ACPI_BITMASK_POWER_BUTTON_ENABLE 0x0100
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#define ACPI_BITMASK_SLEEP_BUTTON_ENABLE 0x0200
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#define ACPI_BITMASK_RT_CLOCK_ENABLE 0x0400
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#define ACPI_BITMASK_PCIEXP_WAKE_DISABLE 0x4000 /* ACPI 3.0 */
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#define ACPI_BITMASK_PM1_COMMON_ENABLED ( \
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ACPI_BITMASK_RT_CLOCK_ENABLE | \
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ACPI_BITMASK_POWER_BUTTON_ENABLE | \
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ACPI_BITMASK_GLOBAL_LOCK_ENABLE | \
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ACPI_BITMASK_TIMER_ENABLE)
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/* PM1x_CNT */
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#define ACPI_BITMASK_SCI_ENABLE 0x0001
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#define ACPI_BITMASK_BUS_MASTER_RLD 0x0002
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#define ACPI_BITMASK_GLOBAL_LOCK_RELEASE 0x0004
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#define ACPI_BITMASK_SLEEP_TYPE 0x1C00
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#define ACPI_BITMASK_SLEEP_ENABLE 0x2000
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/* PM2_CNT */
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#define ACPI_BITMASK_ARB_DISABLE 0x0001
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/* structs */
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typedef struct ACPIPMTimer ACPIPMTimer;
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typedef struct ACPIPM1EVT ACPIPM1EVT;
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typedef struct ACPIPM1CNT ACPIPM1CNT;
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typedef struct ACPIGPE ACPIGPE;
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typedef struct ACPIREGS ACPIREGS;
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typedef void (*acpi_update_sci_fn)(ACPIREGS *ar);
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struct ACPIPMTimer {
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QEMUTimer *timer;
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MemoryRegion io;
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int64_t overflow_time;
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acpi_update_sci_fn update_sci;
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};
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struct ACPIPM1EVT {
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MemoryRegion io;
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uint16_t sts;
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uint16_t en;
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acpi_update_sci_fn update_sci;
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};
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struct ACPIPM1CNT {
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MemoryRegion io;
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uint16_t cnt;
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uint8_t s4_val;
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bool acpi_only;
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};
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struct ACPIGPE {
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uint8_t len;
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uint8_t *sts;
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uint8_t *en;
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};
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struct ACPIREGS {
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ACPIPMTimer tmr;
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ACPIGPE gpe;
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struct {
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ACPIPM1EVT evt;
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ACPIPM1CNT cnt;
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} pm1;
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Notifier wakeup;
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};
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/* PM_TMR */
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void acpi_pm_tmr_update(ACPIREGS *ar, bool enable);
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void acpi_pm_tmr_calc_overflow_time(ACPIREGS *ar);
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void acpi_pm_tmr_init(ACPIREGS *ar, acpi_update_sci_fn update_sci,
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MemoryRegion *parent);
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void acpi_pm_tmr_reset(ACPIREGS *ar);
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/* PM1a_EVT: piix and ich9 don't implement PM1b. */
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uint16_t acpi_pm1_evt_get_sts(ACPIREGS *ar);
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void acpi_pm1_evt_power_down(ACPIREGS *ar);
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void acpi_pm1_evt_reset(ACPIREGS *ar);
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void acpi_pm1_evt_init(ACPIREGS *ar, acpi_update_sci_fn update_sci,
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MemoryRegion *parent);
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/* PM1a_CNT: piix and ich9 don't implement PM1b CNT. */
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void acpi_pm1_cnt_init(ACPIREGS *ar, MemoryRegion *parent,
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bool disable_s3, bool disable_s4, uint8_t s4_val,
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bool acpi_only);
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void acpi_pm1_cnt_update(ACPIREGS *ar,
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bool sci_enable, bool sci_disable);
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void acpi_pm1_cnt_reset(ACPIREGS *ar);
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/* GPE0 */
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void acpi_gpe_init(ACPIREGS *ar, uint8_t len);
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void acpi_gpe_reset(ACPIREGS *ar);
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void acpi_gpe_ioport_writeb(ACPIREGS *ar, uint32_t addr, uint32_t val);
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uint32_t acpi_gpe_ioport_readb(ACPIREGS *ar, uint32_t addr);
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void acpi_send_gpe_event(ACPIREGS *ar, qemu_irq irq,
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AcpiEventStatusBits status);
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void acpi_update_sci(ACPIREGS *acpi_regs, qemu_irq irq);
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/* acpi.c */
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extern char unsigned *acpi_tables;
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extern size_t acpi_tables_len;
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uint8_t *acpi_table_first(void);
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uint8_t *acpi_table_next(uint8_t *current);
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unsigned acpi_table_len(void *current);
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void acpi_table_add(const QemuOpts *opts, Error **errp);
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typedef struct AcpiSlicOem AcpiSlicOem;
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struct AcpiSlicOem {
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char *id;
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char *table_id;
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};
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int acpi_get_slic_oem(AcpiSlicOem *oem);
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#endif /* QEMU_HW_ACPI_H */
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