From patchwork Fri Dec 9 03:33:09 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yinbo Zhu X-Patchwork-Id: 13069212 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 EB47FC4332F for ; Fri, 9 Dec 2022 04:09:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229564AbiLIEJH (ORCPT ); Thu, 8 Dec 2022 23:09:07 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44408 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229652AbiLIEJC (ORCPT ); Thu, 8 Dec 2022 23:09:02 -0500 Received: from loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 4C5D36ACCF; Thu, 8 Dec 2022 20:08:50 -0800 (PST) Received: from loongson.cn (unknown [10.180.13.64]) by gateway (Coremail) with SMTP id _____8Dx9vB_rJJjg1IEAA--.9934S3; Fri, 09 Dec 2022 11:33:19 +0800 (CST) Received: from localhost.localdomain (unknown [10.180.13.64]) by localhost.localdomain (Coremail) with SMTP id AQAAf8Dxd1d2rJJjbdsoAA--.16617S2; Fri, 09 Dec 2022 11:33:19 +0800 (CST) From: Yinbo Zhu To: Huacai Chen , Jiaxun Yang , Thomas Gleixner , Marc Zyngier , linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, Yinbo Zhu Cc: Jianmin Lv , Liu Peibao , wanghongliang@loongson.cn Subject: [PATCH v2] irqchip: loongson-liointc: add hierarchy irq support Date: Fri, 9 Dec 2022 11:33:09 +0800 Message-Id: <20221209033309.4374-1-zhuyinbo@loongson.cn> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-CM-TRANSID: AQAAf8Dxd1d2rJJjbdsoAA--.16617S2 X-CM-SenderInfo: 52kx5xhqerqz5rrqw2lrqou0/ X-Coremail-Antispam: 1Uk129KBjvJXoWxXFy3KrWrXr47Cw15JF4kCrg_yoWrJr1UpF 4Fy3sFqrWUJayUXr47Cw1kWa4ak3yftrZrtayfWF9rZ3WDGr95uFW8uF9F9r1YkryUGF1j vF4fWay8ua15AaDanT9S1TB71UUUUUDqnTZGkaVYY2UrUUUUj1kv1TuYvTs0mT0YCTnIWj qI5I8CrVACY4xI64kE6c02F40Ex7xfYxn0WfASr-VFAUDa7-sFnT9fnUUIcSsGvfJTRUUU b7xFc2x0x2IEx4CE42xK8VAvwI8IcIk0rVWrJVCq3wAFIxvE14AKwVWUGVWUXwA2ocxC64 kIII0Yj41l84x0c7CEw4AK67xGY2AK021l84ACjcxK6xIIjxv20xvE14v26r4j6ryUM28E F7xvwVC0I7IYx2IY6xkF7I0E14v26r4j6F4UM28EF7xvwVC2z280aVAFwI0_Gr1j6F4UJw A2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_Gr1j6F4UJwAS0I0E0xvYzxvE52x082IY62kv0487 Mc804VCY07AIYIkI8VC2zVCFFI0UMc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2 IY67AKxVWUXVWUAwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0 Y48IcxkI7VAKI48JMxAIw28IcxkI7VAKI48JMxAIw28IcVCjz48v1sIEY20_WwCFx2IqxV CFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r10 6r1rMI8E67AF67kF1VAFwI0_Jw0_GFylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxV WUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Jr0_Gr1lIxAIcVCF04k26cxKx2IYs7xG 6r1j6r1xMIIF0xvEx4A2jsIE14v26r1j6r4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr0_Gr 1UYxBIdaVFxhVjvjDU0xZFpf9x07U_uc_UUUUU= Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org When the irq of hierarchical interrupt chip was routed to liointc that asked liointc driver to support hierarchy irq and this patch was to add such support. Signed-off-by: Yinbo Zhu --- Change in v2: 1. Keep consistent approach for irq handle of dts and acpi. 2. Use a domain to cover all case. 3. Fixup the commit log. drivers/irqchip/Kconfig | 1 + drivers/irqchip/irq-loongson-liointc.c | 53 +++++++++++++++++--------- 2 files changed, 37 insertions(+), 17 deletions(-) diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig index d07568a2c539..97f589d681c6 100644 --- a/drivers/irqchip/Kconfig +++ b/drivers/irqchip/Kconfig @@ -593,6 +593,7 @@ config LOONGSON_LIOINTC default y select IRQ_DOMAIN select GENERIC_IRQ_CHIP + select IRQ_DOMAIN_HIERARCHY help Support for the Loongson Local I/O Interrupt Controller. diff --git a/drivers/irqchip/irq-loongson-liointc.c b/drivers/irqchip/irq-loongson-liointc.c index 85b754f7f4e6..e5670cc6123a 100644 --- a/drivers/irqchip/irq-loongson-liointc.c +++ b/drivers/irqchip/irq-loongson-liointc.c @@ -160,26 +160,48 @@ static u32 parent_int_map[LIOINTC_NUM_PARENT]; static const char *const parent_names[] = {"int0", "int1", "int2", "int3"}; static const char *const core_reg_names[] = {"isr0", "isr1", "isr2", "isr3"}; -static int liointc_domain_xlate(struct irq_domain *d, struct device_node *ctrlr, - const u32 *intspec, unsigned int intsize, - unsigned long *out_hwirq, unsigned int *out_type) +static int liointc_irq_domain_translate(struct irq_domain *d, + struct irq_fwspec *fwspec, unsigned long *out_hwirq, + unsigned int *out_type) { - if (WARN_ON(intsize < 1)) + if (WARN_ON(fwspec->param_count < 1)) return -EINVAL; - *out_hwirq = intspec[0] - GSI_MIN_CPU_IRQ; - if (intsize > 1) - *out_type = intspec[1] & IRQ_TYPE_SENSE_MASK; + if (!acpi_disabled) + *out_hwirq = fwspec->param[0] - GSI_MIN_CPU_IRQ; + else + *out_hwirq = fwspec->param[0]; + + if (fwspec->param_count > 1) + *out_type = fwspec->param[1] & IRQ_TYPE_SENSE_MASK; else *out_type = IRQ_TYPE_NONE; return 0; } -static const struct irq_domain_ops acpi_irq_gc_ops = { - .map = irq_map_generic_chip, - .unmap = irq_unmap_generic_chip, - .xlate = liointc_domain_xlate, +static int liointc_irq_domain_alloc(struct irq_domain *domain, + unsigned int virq, unsigned int nr_irqs, void *arg) +{ + int i, ret; + irq_hw_number_t hwirq; + unsigned int type = IRQ_TYPE_NONE; + struct irq_fwspec *fwspec = arg; + + ret = liointc_irq_domain_translate(domain, fwspec, &hwirq, &type); + if (ret) + return ret; + + for (i = 0; i < nr_irqs; i++) + irq_map_generic_chip(domain, virq + i, hwirq + i); + + return 0; +} + +static const struct irq_domain_ops irq_gc_ops = { + .translate = liointc_irq_domain_translate, + .alloc = liointc_irq_domain_alloc, + .free = irq_domain_free_irqs_top, }; static int liointc_init(phys_addr_t addr, unsigned long size, int revision, @@ -222,12 +244,9 @@ static int liointc_init(phys_addr_t addr, unsigned long size, int revision, } /* Setup IRQ domain */ - if (!acpi_disabled) - domain = irq_domain_create_linear(domain_handle, LIOINTC_CHIP_IRQ, - &acpi_irq_gc_ops, priv); - else - domain = irq_domain_create_linear(domain_handle, LIOINTC_CHIP_IRQ, - &irq_generic_chip_ops, priv); + domain = irq_domain_create_linear(domain_handle, LIOINTC_CHIP_IRQ, + &irq_gc_ops, priv); + if (!domain) { pr_err("loongson-liointc: cannot add IRQ domain\n"); goto out_iounmap;