From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54261) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Ys1kb-0005uO-DN for qemu-devel@nongnu.org; Tue, 12 May 2015 00:25:02 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Ys1kX-0006xo-CS for qemu-devel@nongnu.org; Tue, 12 May 2015 00:25:01 -0400 Received: from mail-pd0-f169.google.com ([209.85.192.169]:34956) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Ys1kX-0006xj-6q for qemu-devel@nongnu.org; Tue, 12 May 2015 00:24:57 -0400 Received: by pdbqd1 with SMTP id qd1so166864139pdb.2 for ; Mon, 11 May 2015 21:24:56 -0700 (PDT) From: shannon.zhao@linaro.org Date: Tue, 12 May 2015 12:24:15 +0800 Message-Id: <1431404656-7180-7-git-send-email-shannon.zhao@linaro.org> In-Reply-To: <1431404656-7180-1-git-send-email-shannon.zhao@linaro.org> References: <1431404656-7180-1-git-send-email-shannon.zhao@linaro.org> Subject: [Qemu-devel] [PATCH 6/7] hw/arm/virt: Add QEMU powerdown notifier and hook it to GPIO Pin 3 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org, peter.maydell@linaro.org, imammedo@redhat.com, mst@redhat.com, pbonzini@redhat.com, wei@redhat.com, arnd@arndb.de, christoffer.dall@linaro.org Cc: hangaohuai@huawei.com, peter.huangpeng@huawei.com, zhaoshenglong@huawei.com From: Shannon Zhao Currently mach-virt model doesn't support powerdown request. Guest VM doesn't react to system_powerdown from monitor console (or QMP) because there is no communication mechanism for such requests. This patch registers GPIO Pin 3 with powerdown notification. So guest VM can receive notification when such powerdown request is triggered. Signed-off-by: Wei Huang Signed-off-by: Shannon Zhao Signed-off-by: Shannon Zhao --- hw/arm/virt.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 3511903..354b020 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -432,6 +432,18 @@ static void create_rtc(const VirtBoardInfo *vbi, qemu_irq *pic) g_free(nodename); } +static DeviceState *pl061_dev; +static void virt_powerdown_req(Notifier *n, void *opaque) +{ + /* use gpio Pin 3 for power button event */ + qemu_set_irq(qdev_get_gpio_in(pl061_dev, 3), 0); + qemu_set_irq(qdev_get_gpio_in(pl061_dev, 3), 1); +} + +static Notifier virt_system_powerdown_notifier = { + .notify = virt_powerdown_req +}; + static void create_gpio(const VirtBoardInfo *vbi, qemu_irq *pic) { char *nodename; @@ -440,7 +452,7 @@ static void create_gpio(const VirtBoardInfo *vbi, qemu_irq *pic) int irq = vbi->irqmap[VIRT_GPIO]; const char compat[] = "arm,pl061"; - sysbus_create_simple("pl061", base, pic[irq]); + pl061_dev = sysbus_create_simple("pl061", base, pic[irq]); nodename = g_strdup_printf("/pl061@%" PRIx64, base); qemu_fdt_add_subnode(vbi->fdt, nodename); @@ -455,6 +467,9 @@ static void create_gpio(const VirtBoardInfo *vbi, qemu_irq *pic) qemu_fdt_setprop_cell(vbi->fdt, nodename, "clocks", vbi->clock_phandle); qemu_fdt_setprop_string(vbi->fdt, nodename, "clock-names", "apb_pclk"); + /* connect powerdown request */ + qemu_register_powerdown_notifier(&virt_system_powerdown_notifier); + g_free(nodename); } -- 2.1.0