diff options
Diffstat (limited to 'hw/acpi')
| -rw-r--r-- | hw/acpi/ich9.c | 23 | ||||
| -rw-r--r-- | hw/acpi/ich9_timer.c | 93 | ||||
| -rw-r--r-- | hw/acpi/meson.build | 2 |
3 files changed, 117 insertions, 1 deletions
diff --git a/hw/acpi/ich9.c b/hw/acpi/ich9.c index 02d8546bd3..c15e5b8281 100644 --- a/hw/acpi/ich9.c +++ b/hw/acpi/ich9.c @@ -35,6 +35,7 @@ #include "sysemu/runstate.h" #include "hw/acpi/acpi.h" #include "hw/acpi/ich9_tco.h" +#include "hw/acpi/ich9_timer.h" #include "hw/southbridge/ich9.h" #include "hw/mem/pc-dimm.h" @@ -108,6 +109,18 @@ static void ich9_smi_writel(void *opaque, hwaddr addr, uint64_t val, } pm->smi_en &= ~pm->smi_en_wmask; pm->smi_en |= (val & pm->smi_en_wmask); + if (pm->swsmi_timer_enabled) { + ich9_pm_update_swsmi_timer(pm, pm->smi_en & + ICH9_PMIO_SMI_EN_SWSMI_EN); + } + if (pm->periodic_timer_enabled) { + ich9_pm_update_periodic_timer(pm, pm->smi_en & + ICH9_PMIO_SMI_EN_PERIODIC_EN); + } + break; + case 4: + pm->smi_sts &= ~pm->smi_sts_wmask; + pm->smi_sts |= (val & pm->smi_sts_wmask); break; } } @@ -286,6 +299,8 @@ static void pm_powerdown_req(Notifier *n, void *opaque) void ich9_pm_init(PCIDevice *lpc_pci, ICH9LPCPMRegs *pm, qemu_irq sci_irq) { + pm->smi_sts_wmask = 0; + memory_region_init(&pm->io, OBJECT(lpc_pci), "ich9-pm", ICH9_PMIO_SIZE); memory_region_set_enabled(&pm->io, false); memory_region_add_subregion(pci_address_space_io(lpc_pci), @@ -305,6 +320,14 @@ void ich9_pm_init(PCIDevice *lpc_pci, ICH9LPCPMRegs *pm, qemu_irq sci_irq) "acpi-smi", 8); memory_region_add_subregion(&pm->io, ICH9_PMIO_SMI_EN, &pm->io_smi); + if (pm->swsmi_timer_enabled) { + ich9_pm_swsmi_timer_init(pm); + } + + if (pm->periodic_timer_enabled) { + ich9_pm_periodic_timer_init(pm); + } + if (pm->enable_tco) { acpi_pm_tco_init(&pm->tco_regs, &pm->io); } diff --git a/hw/acpi/ich9_timer.c b/hw/acpi/ich9_timer.c new file mode 100644 index 0000000000..5b1c910156 --- /dev/null +++ b/hw/acpi/ich9_timer.c @@ -0,0 +1,93 @@ +/* + * QEMU ICH9 Timer emulation + * + * Copyright (c) 2024 Dominic Prinz <git@dprinz.de> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "hw/core/cpu.h" +#include "hw/pci/pci.h" +#include "hw/southbridge/ich9.h" +#include "qemu/timer.h" + +#include "hw/acpi/ich9_timer.h" + +void ich9_pm_update_swsmi_timer(ICH9LPCPMRegs *pm, bool enable) +{ + uint16_t swsmi_rate_sel; + int64_t expire_time; + ICH9LPCState *lpc; + + if (enable) { + lpc = container_of(pm, ICH9LPCState, pm); + swsmi_rate_sel = + (pci_get_word(lpc->d.config + ICH9_LPC_GEN_PMCON_3) & 0xc0) >> 6; + + if (swsmi_rate_sel == 0) { + expire_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + 1500000LL; + } else { + expire_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + + 8 * (1 << swsmi_rate_sel) * 1000000LL; + } + + timer_mod(pm->swsmi_timer, expire_time); + } else { + timer_del(pm->swsmi_timer); + } +} + +static void ich9_pm_swsmi_timer_expired(void *opaque) +{ + ICH9LPCPMRegs *pm = opaque; + + pm->smi_sts |= ICH9_PMIO_SMI_STS_SWSMI_STS; + ich9_generate_smi(); + + ich9_pm_update_swsmi_timer(pm, pm->smi_en & ICH9_PMIO_SMI_EN_SWSMI_EN); +} + +void ich9_pm_swsmi_timer_init(ICH9LPCPMRegs *pm) +{ + pm->smi_sts_wmask |= ICH9_PMIO_SMI_STS_SWSMI_STS; + pm->swsmi_timer = + timer_new_ns(QEMU_CLOCK_VIRTUAL, ich9_pm_swsmi_timer_expired, pm); +} + +void ich9_pm_update_periodic_timer(ICH9LPCPMRegs *pm, bool enable) +{ + uint16_t per_smi_sel; + int64_t expire_time; + ICH9LPCState *lpc; + + if (enable) { + lpc = container_of(pm, ICH9LPCState, pm); + per_smi_sel = pci_get_word(lpc->d.config + ICH9_LPC_GEN_PMCON_1) & 3; + expire_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + + 8 * (1 << (3 - per_smi_sel)) * NANOSECONDS_PER_SECOND; + + timer_mod(pm->periodic_timer, expire_time); + } else { + timer_del(pm->periodic_timer); + } +} + +static void ich9_pm_periodic_timer_expired(void *opaque) +{ + ICH9LPCPMRegs *pm = opaque; + + pm->smi_sts = ICH9_PMIO_SMI_STS_PERIODIC_STS; + ich9_generate_smi(); + + ich9_pm_update_periodic_timer(pm, + pm->smi_en & ICH9_PMIO_SMI_EN_PERIODIC_EN); +} + +void ich9_pm_periodic_timer_init(ICH9LPCPMRegs *pm) +{ + pm->smi_sts_wmask |= ICH9_PMIO_SMI_STS_PERIODIC_STS; + pm->periodic_timer = + timer_new_ns(QEMU_CLOCK_VIRTUAL, ich9_pm_periodic_timer_expired, pm); +} diff --git a/hw/acpi/meson.build b/hw/acpi/meson.build index fa5c07db90..7f8ccc9b7a 100644 --- a/hw/acpi/meson.build +++ b/hw/acpi/meson.build @@ -24,7 +24,7 @@ acpi_ss.add(when: 'CONFIG_ACPI_PCI_BRIDGE', if_true: files('pci-bridge.c')) acpi_ss.add(when: 'CONFIG_ACPI_PCIHP', if_true: files('pcihp.c')) acpi_ss.add(when: 'CONFIG_ACPI_PCIHP', if_false: files('acpi-pci-hotplug-stub.c')) acpi_ss.add(when: 'CONFIG_ACPI_VIOT', if_true: files('viot.c')) -acpi_ss.add(when: 'CONFIG_ACPI_ICH9', if_true: files('ich9.c', 'ich9_tco.c')) +acpi_ss.add(when: 'CONFIG_ACPI_ICH9', if_true: files('ich9.c', 'ich9_tco.c', 'ich9_timer.c')) acpi_ss.add(when: 'CONFIG_ACPI_ERST', if_true: files('erst.c')) acpi_ss.add(when: 'CONFIG_IPMI', if_true: files('ipmi.c'), if_false: files('ipmi-stub.c')) acpi_ss.add(when: 'CONFIG_PC', if_false: files('acpi-x86-stub.c')) |