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Wed, 26 Aug 2020 10:53:03 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-112-54.ams2.redhat.com [10.36.112.54]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1FAB17C667; Wed, 26 Aug 2020 10:52:55 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id 42AAA942; Wed, 26 Aug 2020 12:52:54 +0200 (CEST) From: Gerd Hoffmann To: qemu-devel@nongnu.org Subject: [PATCH v6 04/20] acpi: ged: add control regs Date: Wed, 26 Aug 2020 12:52:38 +0200 Message-Id: <20200826105254.28496-5-kraxel@redhat.com> In-Reply-To: <20200826105254.28496-1-kraxel@redhat.com> References: <20200826105254.28496-1-kraxel@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=kraxel@redhat.com X-Mimecast-Spam-Score: 0.001 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=207.211.31.81; envelope-from=kraxel@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/26 03:16:15 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.958, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Laurent Vivier , Peter Maydell , Thomas Huth , Eduardo Habkost , Sergio Lopez , "Michael S. Tsirkin" , Shannon Zhao , qemu-arm@nongnu.org, Gerd Hoffmann , Igor Mammedov , Paolo Bonzini , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Add control regs (sleep, reset) for hw-reduced acpi. Signed-off-by: Gerd Hoffmann Reviewed-by: Igor Mammedov --- include/hw/acpi/generic_event_device.h | 12 +++++++ hw/acpi/generic_event_device.c | 44 ++++++++++++++++++++++++++ 2 files changed, 56 insertions(+) diff --git a/include/hw/acpi/generic_event_device.h b/include/hw/acpi/generic_event_device.h index 90a9180db572..4533cddb486c 100644 --- a/include/hw/acpi/generic_event_device.h +++ b/include/hw/acpi/generic_event_device.h @@ -72,6 +72,17 @@ #define ACPI_GED_EVT_SEL_OFFSET 0x0 #define ACPI_GED_EVT_SEL_LEN 0x4 +#define ACPI_GED_REG_SLEEP_CTL 0x00 +#define ACPI_GED_REG_SLEEP_STS 0x01 +#define ACPI_GED_REG_RESET 0x02 +#define ACPI_GED_REG_COUNT 0x03 + +/* ACPI_GED_REG_RESET value for reset*/ +#define ACPI_GED_RESET_VALUE 0x42 + +/* ACPI_GED_REG_SLEEP_CTL.SLP_TYP value for S5 (aka poweroff) */ +#define ACPI_GED_SLP_TYP_S5 0x05 + #define GED_DEVICE "GED" #define AML_GED_EVT_REG "EREG" #define AML_GED_EVT_SEL "ESEL" @@ -87,6 +98,7 @@ typedef struct GEDState { MemoryRegion evt; + MemoryRegion regs; uint32_t sel; } GEDState; diff --git a/hw/acpi/generic_event_device.c b/hw/acpi/generic_event_device.c index b8abdefa1c77..491df80a5cc7 100644 --- a/hw/acpi/generic_event_device.c +++ b/hw/acpi/generic_event_device.c @@ -20,6 +20,7 @@ #include "hw/qdev-properties.h" #include "migration/vmstate.h" #include "qemu/error-report.h" +#include "sysemu/runstate.h" static const uint32_t ged_supported_events[] = { ACPI_GED_MEM_HOTPLUG_EVT, @@ -176,6 +177,45 @@ static const MemoryRegionOps ged_evt_ops = { }, }; +static uint64_t ged_regs_read(void *opaque, hwaddr addr, unsigned size) +{ + return 0; +} + +static void ged_regs_write(void *opaque, hwaddr addr, uint64_t data, + unsigned int size) +{ + bool slp_en; + int slp_typ; + + switch (addr) { + case ACPI_GED_REG_SLEEP_CTL: + slp_typ = (data >> 2) & 0x07; + slp_en = (data >> 5) & 0x01; + if (slp_en && slp_typ == 5) { + qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); + } + return; + case ACPI_GED_REG_SLEEP_STS: + return; + case ACPI_GED_REG_RESET: + if (data == ACPI_GED_RESET_VALUE) { + qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); + } + return; + } +} + +static const MemoryRegionOps ged_regs_ops = { + .read = ged_regs_read, + .write = ged_regs_write, + .endianness = DEVICE_LITTLE_ENDIAN, + .valid = { + .min_access_size = 1, + .max_access_size = 1, + }, +}; + static void acpi_ged_device_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { @@ -332,6 +372,10 @@ static void acpi_ged_initfn(Object *obj) sysbus_init_mmio(sbd, &s->container_memhp); acpi_memory_hotplug_init(&s->container_memhp, OBJECT(dev), &s->memhp_state, 0); + + memory_region_init_io(&ged_st->regs, obj, &ged_regs_ops, ged_st, + TYPE_ACPI_GED "-regs", ACPI_GED_REG_COUNT); + sysbus_init_mmio(sbd, &ged_st->regs); } static void acpi_ged_class_init(ObjectClass *class, void *data)