From patchwork Mon Jun 6 23:14:47 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Henderson X-Patchwork-Id: 1639693 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=XhzJ486j; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4LH8zH43Fjz9sFk for ; Tue, 7 Jun 2022 09:37:15 +1000 (AEST) Received: from localhost ([::1]:41440 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nyMHZ-0006Fh-Lu for incoming@patchwork.ozlabs.org; Mon, 06 Jun 2022 19:37:13 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35722) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nyLzV-0000Tj-Bz for qemu-devel@nongnu.org; Mon, 06 Jun 2022 19:18:33 -0400 Received: from mail-pl1-x62f.google.com ([2607:f8b0:4864:20::62f]:43757) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nyLzT-0004NX-Op for qemu-devel@nongnu.org; Mon, 06 Jun 2022 19:18:33 -0400 Received: by mail-pl1-x62f.google.com with SMTP id b5so13322889plx.10 for ; Mon, 06 Jun 2022 16:18:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=8VWxIbgIWtKhvuM65y86UvIUmUsFnOFX5fQVBZHjKso=; b=XhzJ486jm6M07wrYWYqFPyv3Rm1qhoV0l0c4XqG3OnHEVkd5pkv9VmMNaLgH0dVz0I mYs85rwGzsEiq6DzlDdNmurHzCUdtV/qoROTtrR9qfDSx7vhnJ53kF10b8LSpMBpfi+d MylgptyaBU5CxTgD52C/gG2DpMKcuJSudcTIBMyYXyC4i/Jmcaawu7KHjqNZlro0bffX vEz/oCpVpW6D42hnoQ/ZKZNaVi8MFuVfiazBmMt+T9i6MvU+2BiVysMdRZDO5ED2tTWf OQQB5lv48QpiDEw0HNYum1Ry2QNOxFOB2sRbrsUVvoTv7bqszMO86xG9xpAwos5hNzPJ ebcw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=8VWxIbgIWtKhvuM65y86UvIUmUsFnOFX5fQVBZHjKso=; b=Pba9ddV0MbHNw92WJg/7qQzo8Mz+HQcqBEhFW/AzO9eBctgEmx1rysRRL7IZjEj0bo qVzxo/eI+ruNWnlEQEGZlYUJiXwPaSoUw5yOWUJH0qcGG+8ZG+R6jBSB2QEsJq54Tr7a T43aQ+AG3EaidRPJiUGFCzvbEc524MrAwEFZSyszMmo8ywJ3bMnq0e3wX4mmfvwct28A bK4ug6Rcph0Euf7weH3/b1u+Lxx2tfTlvTZ9hRjN89l6pr2biNzgdFlmkUmkdtly0pQQ TeKKPBDqlRGKV7iJCL/ceRlG5uUa1PY78P7I+ktTZ4nT5TQ4l8q8WQbry/wVnBxLg1YF 3hLw== X-Gm-Message-State: AOAM532xD8LKkZ/hG9QbnyXOl0Yy+GjhCEoxLme6kJnV5YTVwmpGl7Dy jAbLMTRFIrKAFvSBMTqtoTfZZwmkXPh7tA== X-Google-Smtp-Source: ABdhPJzTTyNppuqP5ujv2cs0iuIfkKs+jzL7/xRQip8oZrHDNO2ilmju1xxbs5SFHDO+7L2ZcxNmyg== X-Received: by 2002:a17:903:120a:b0:15f:99f:95bc with SMTP id l10-20020a170903120a00b0015f099f95bcmr26252044plh.48.1654557510078; Mon, 06 Jun 2022 16:18:30 -0700 (PDT) Received: from stoup.. ([2602:ae:1547:e101:dd1c:9738:3e40:ffe0]) by smtp.gmail.com with ESMTPSA id z14-20020a17090a170e00b001df239bab14sm10667754pjd.46.2022.06.06.16.18.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 Jun 2022 16:18:29 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: =gaosong@loongson.cn, yangxiaojuan@loongson.cn, Song Gao Subject: [PULL 40/43] hw/loongarch: Add LoongArch virt power manager support. Date: Mon, 6 Jun 2022 16:14:47 -0700 Message-Id: <20220606231450.448443-41-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220606231450.448443-1-richard.henderson@linaro.org> References: <20220606231450.448443-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::62f; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62f.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Xiaojuan Yang This is a placeholder for missing ACPI, and will eventually be replaced. Signed-off-by: Xiaojuan Yang Signed-off-by: Song Gao Acked-by: Richard Henderson Message-Id: <20220606124333.2060567-41-yangxiaojuan@loongson.cn> Signed-off-by: Richard Henderson --- hw/loongarch/loongson3.c | 49 +++++++++++++++++++++++++++++++++++++++- 1 file changed, 48 insertions(+), 1 deletion(-) diff --git a/hw/loongarch/loongson3.c b/hw/loongarch/loongson3.c index 3c8fcb828c..bd20ebbb78 100644 --- a/hw/loongarch/loongson3.c +++ b/hw/loongarch/loongson3.c @@ -31,6 +31,48 @@ #include "target/loongarch/cpu.h" +#define PM_BASE 0x10080000 +#define PM_SIZE 0x100 +#define PM_CTRL 0x10 + +/* + * This is a placeholder for missing ACPI, + * and will eventually be replaced. + */ +static uint64_t loongarch_virt_pm_read(void *opaque, hwaddr addr, unsigned size) +{ + return 0; +} + +static void loongarch_virt_pm_write(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + if (addr != PM_CTRL) { + return; + } + + switch (val) { + case 0x00: + qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); + return; + case 0xff: + qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); + return; + default: + return; + } +} + +static const MemoryRegionOps loongarch_virt_pm_ops = { + .read = loongarch_virt_pm_read, + .write = loongarch_virt_pm_write, + .endianness = DEVICE_NATIVE_ENDIAN, + .valid = { + .min_access_size = 1, + .max_access_size = 1 + } +}; + static struct _loaderparams { uint64_t ram_size; const char *kernel_filename; @@ -67,7 +109,7 @@ static void loongarch_devices_init(DeviceState *pch_pic) SysBusDevice *d; PCIBus *pci_bus; MemoryRegion *ecam_alias, *ecam_reg, *pio_alias, *pio_reg; - MemoryRegion *mmio_alias, *mmio_reg; + MemoryRegion *mmio_alias, *mmio_reg, *pm_mem; int i; gpex_dev = qdev_new(TYPE_GPEX_HOST); @@ -132,6 +174,11 @@ static void loongarch_devices_init(DeviceState *pch_pic) sysbus_create_simple("ls7a_rtc", LS7A_RTC_REG_BASE, qdev_get_gpio_in(pch_pic, LS7A_RTC_IRQ - PCH_PIC_IRQ_OFFSET)); + + pm_mem = g_new(MemoryRegion, 1); + memory_region_init_io(pm_mem, NULL, &loongarch_virt_pm_ops, + NULL, "loongarch_virt_pm", PM_SIZE); + memory_region_add_subregion(get_system_memory(), PM_BASE, pm_mem); } static void loongarch_irq_init(LoongArchMachineState *lams)