From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5478EC433EF for ; Mon, 27 Jun 2022 11:51:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238478AbiF0LvR (ORCPT ); Mon, 27 Jun 2022 07:51:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50092 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238277AbiF0LsM (ORCPT ); Mon, 27 Jun 2022 07:48:12 -0400 Received: from loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 4A023F587 for ; Mon, 27 Jun 2022 04:40:13 -0700 (PDT) Received: from localhost.localdomain.localdomain (unknown [10.2.5.46]) by mail.loongson.cn (Coremail) with SMTP id AQAAf9Dx39kNl7liP_FfAA--.6156S14; Mon, 27 Jun 2022 19:40:05 +0800 (CST) From: Jianmin Lv To: Thomas Gleixner , Marc Zyngier Cc: linux-kernel@vger.kernel.org, Hanjun Guo , Lorenzo Pieralisi , Jiaxun Yang , Huacai Chen Subject: [PATCH V13 12/13] irqchip / ACPI: Introduce ACPI_IRQ_MODEL_LPIC for LoongArch Date: Mon, 27 Jun 2022 19:39:56 +0800 Message-Id: <1656329997-20524-13-git-send-email-lvjianmin@loongson.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1656329997-20524-1-git-send-email-lvjianmin@loongson.cn> References: <1656329997-20524-1-git-send-email-lvjianmin@loongson.cn> X-CM-TRANSID: AQAAf9Dx39kNl7liP_FfAA--.6156S14 X-Coremail-Antispam: 1UD129KBjvJXoWxuF17tr4DCF4kJw43tFyftFb_yoW5Wr48pF WDuF15Ar48t3y7W3sxCa1Dury3uFyrKrW2qayfG3ZrCw1DGrykWF1kXF9FvFZ8A3y5W3W7 CF1DXFs0g3WUZwUanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUv01xkIjI8I6I8E6xAIw20EY4v20xvaj40_Wr0E3s1l1IIY67AE w4v_Jr0_Jr4l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxSw2x7M28EF7xvwVC0I7IYx2 IY67AKxVW5JVW7JwA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxVW8Jr0_Cr1UM28EF7xvwVC2 z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E14v26rxl6s0DM2AIxVAIcxkEcV Aq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xIIjxv20xvE14v26r1j 6r18McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64 vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7MxkIecxEwVCm-wCF04k20xvY0x0EwIxGrwCF 04k20xvE74AGY7Cv6cx26ryrJr1UJwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F4 0E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_JF0_Jw1l IxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVW8JVW5JwCI42IY6xIIjxv20xvEc7CjxV AFwI0_Cr0_Gr1UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxVW8 JVWxJwCI42IY6I8E87Iv6xkF7I0E14v26r4UJVWxJrUvcSsGvfC2KfnxnUUI43ZEXa7VUb XdbUUUUUU== X-CM-SenderInfo: 5oymxthqpl0qxorr0wxvrqhubq/ Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org For LoongArch, ACPI_IRQ_MODEL_LPIC is introduced, and then the callback acpi_get_gsi_domain_id is implemented. The acpi_get_gsi_domain_id callback returns related fwnode handle of irqdomain for different GSI range. Signed-off-by: Jianmin Lv --- drivers/acpi/bus.c | 3 +++ drivers/irqchip/irq-loongarch-cpu.c | 37 +++++++++++++++++++++++++++++++++++++ include/linux/acpi.h | 1 + 3 files changed, 41 insertions(+) diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 86fa61a..63fbf00 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -1145,6 +1145,9 @@ static int __init acpi_bus_init_irq(void) case ACPI_IRQ_MODEL_PLATFORM: message = "platform specific model"; break; + case ACPI_IRQ_MODEL_LPIC: + message = "LPIC"; + break; default: pr_info("Unknown interrupt routing model\n"); return -ENODEV; diff --git a/drivers/irqchip/irq-loongarch-cpu.c b/drivers/irqchip/irq-loongarch-cpu.c index f2dfbcb..eee21c9 100644 --- a/drivers/irqchip/irq-loongarch-cpu.c +++ b/drivers/irqchip/irq-loongarch-cpu.c @@ -15,6 +15,41 @@ static struct irq_domain *irq_domain; +static int lpic_gsi_to_irq(u32 gsi) +{ + /* Only pch irqdomain transferring is required for LoongArch. */ + if (gsi >= GSI_MIN_PCH_IRQ && gsi <= GSI_MAX_PCH_IRQ) + return acpi_register_gsi(NULL, gsi, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_HIGH); + return -1; +} + +struct fwnode_handle *lpic_get_gsi_domain_id(u32 gsi) +{ + int id; + struct fwnode_handle *domain_handle = NULL; + + switch (gsi) { + case GSI_MIN_CPU_IRQ ... GSI_MAX_CPU_IRQ: + if (liointc_handle) + domain_handle = liointc_handle; + break; + + case GSI_MIN_LPC_IRQ ... GSI_MAX_LPC_IRQ: + if (pch_lpc_handle) + domain_handle = pch_lpc_handle; + break; + + case GSI_MIN_PCH_IRQ ... GSI_MAX_PCH_IRQ: + id = find_pch_pic(gsi); + if (id >= 0 && pch_pic_handle[id]) + domain_handle = pch_pic_handle[id]; + + break; + } + + return domain_handle; +} + static void mask_loongarch_irq(struct irq_data *d) { clear_csr_ecfg(ECFGF(d->hwirq)); @@ -87,6 +122,8 @@ struct irq_domain * __init loongarch_cpu_irq_init(void) panic("Failed to add irqdomain for LoongArch CPU"); set_handle_irq(&handle_cpu_irq); + acpi_set_irq_model(ACPI_IRQ_MODEL_LPIC, lpic_get_gsi_domain_id); + acpi_set_gsi_to_irq_fallback(lpic_gsi_to_irq); return irq_domain; } diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 71d3719..1bec0a3 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -105,6 +105,7 @@ enum acpi_irq_model_id { ACPI_IRQ_MODEL_IOSAPIC, ACPI_IRQ_MODEL_PLATFORM, ACPI_IRQ_MODEL_GIC, + ACPI_IRQ_MODEL_LPIC, ACPI_IRQ_MODEL_COUNT }; -- 1.8.3.1