From 8a5f450470b2413e8429dfd3a540fb6c7cc6e196 Mon Sep 17 00:00:00 2001 From: Laszlo Ersek Date: Wed, 17 Jun 2015 14:07:42 +0200 Subject: [PATCH 02/23] hw/acpi: move "etc/system-states" fw_cfg file from PIIX4 to core Message-id: <1434550063-12144-3-git-send-email-lersek@redhat.com> Patchwork-id: 66285 O-Subject: [RHEV-7.2 qemu-kvm-rhev 2/3] hw/acpi: move "etc/system-states" fw_cfg file from PIIX4 to core Bugzilla: 1204696 RH-Acked-by: Paolo Bonzini RH-Acked-by: Thomas Huth RH-Acked-by: Michael S. Tsirkin The acpi_pm1_cnt_init() core function is responsible for setting up the register block that will ultimately react to S3 and S4 requests (see acpi_pm1_cnt_write()). It makes sense to advertise this configuration to the guest firmware via an easy to parse fw_cfg file (ACPI is too complex for firmware to parse), and indeed PIIX4 does that. However, since acpi_pm1_cnt_init() is not specific to PIIX4, neither should be the fw_cfg file. This patch makes "etc/system-states" appear on all chipsets modified in the previous patch, not just PIIX4 (assuming they have fw_cfg at all). RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=1204696 Cc: Amit Shah Cc: "Michael S. Tsirkin" Cc: Paolo Bonzini Cc: Richard Henderson Cc: Eduardo Habkost Cc: Aurelien Jarno Cc: Leon Alrae Signed-off-by: Laszlo Ersek Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin Signed-off-by: Laszlo Ersek (cherry picked from commit e3845e7c47cc3eaf35305c9c0f9d55ca3840b49b) Signed-off-by: Miroslav Rezanina --- hw/acpi/core.c | 12 ++++++++++++ hw/acpi/piix4.c | 8 -------- 2 files changed, 12 insertions(+), 8 deletions(-) diff --git a/hw/acpi/core.c b/hw/acpi/core.c index c19be8f..f70377f 100644 --- a/hw/acpi/core.c +++ b/hw/acpi/core.c @@ -22,6 +22,7 @@ #include "hw/hw.h" #include "hw/i386/pc.h" #include "hw/acpi/acpi.h" +#include "hw/nvram/fw_cfg.h" #include "qemu/config-file.h" #include "qapi/opts-visitor.h" #include "qapi/dealloc-visitor.h" @@ -595,12 +596,23 @@ static const MemoryRegionOps acpi_pm_cnt_ops = { void acpi_pm1_cnt_init(ACPIREGS *ar, MemoryRegion *parent, bool disable_s3, bool disable_s4, uint8_t s4_val) { + FWCfgState *fw_cfg; + ar->pm1.cnt.s4_val = s4_val; ar->wakeup.notify = acpi_notify_wakeup; qemu_register_wakeup_notifier(&ar->wakeup); memory_region_init_io(&ar->pm1.cnt.io, memory_region_owner(parent), &acpi_pm_cnt_ops, ar, "acpi-cnt", 2); memory_region_add_subregion(parent, 4, &ar->pm1.cnt.io); + + fw_cfg = fw_cfg_find(); + if (fw_cfg) { + uint8_t suspend[6] = {128, 0, 0, 129, 128, 128}; + suspend[3] = 1 | ((!disable_s3) << 7); + suspend[4] = s4_val | ((!disable_s4) << 7); + + fw_cfg_add_file(fw_cfg, "etc/system-states", g_memdup(suspend, 6), 6); + } } void acpi_pm1_cnt_reset(ACPIREGS *ar) diff --git a/hw/acpi/piix4.c b/hw/acpi/piix4.c index 1fb32f5..a2df40d 100644 --- a/hw/acpi/piix4.c +++ b/hw/acpi/piix4.c @@ -525,14 +525,6 @@ I2CBus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base, qdev_init_nofail(dev); - if (fw_cfg) { - uint8_t suspend[6] = {128, 0, 0, 129, 128, 128}; - suspend[3] = 1 | ((!s->disable_s3) << 7); - suspend[4] = s->s4_val | ((!s->disable_s4) << 7); - - fw_cfg_add_file(fw_cfg, "etc/system-states", g_memdup(suspend, 6), 6); - } - return s->smb.smbus; } -- 1.8.3.1