From patchwork Thu Dec 17 11:56:37 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "majun (F)" X-Patchwork-Id: 7872671 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id D4531BEEE5 for ; Thu, 17 Dec 2015 12:03:52 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 20753202B8 for ; Thu, 17 Dec 2015 12:03:48 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D28CB201C7 for ; Thu, 17 Dec 2015 12:03:43 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1a9XFu-0002bf-OB; Thu, 17 Dec 2015 12:01:58 +0000 Received: from szxga02-in.huawei.com ([119.145.14.65]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1a9XF1-0001AB-AZ for linux-arm-kernel@lists.infradead.org; Thu, 17 Dec 2015 12:01:08 +0000 Received: from 172.24.1.48 (EHLO szxeml428-hub.china.huawei.com) ([172.24.1.48]) by szxrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id CYF40258; Thu, 17 Dec 2015 19:56:57 +0800 (CST) Received: from localhost (10.177.235.245) by szxeml428-hub.china.huawei.com (10.82.67.183) with Microsoft SMTP Server id 14.3.235.1; Thu, 17 Dec 2015 19:56:47 +0800 From: MaJun To: , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v10 4/4] irqchip:implement the mbigen irq chip operation functions Date: Thu, 17 Dec 2015 19:56:37 +0800 Message-ID: <1450353397-47668-5-git-send-email-majun258@huawei.com> X-Mailer: git-send-email 1.9.5.msysgit.1 In-Reply-To: <1450353397-47668-1-git-send-email-majun258@huawei.com> References: <1450353397-47668-1-git-send-email-majun258@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.177.235.245] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020205.5672A30D.00B6, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-06-18 04:22:30, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 22a123b6ab0c3b6bb63bdc65bbf1ce48 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20151217_040103_943316_1B0174BB X-CRM114-Status: GOOD ( 14.29 ) X-Spam-Score: -4.2 (----) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Ma Jun Add the interrupt controller chip operation functions of mbigen chip. Signed-off-by: Ma Jun Reviewed-by: Marc Zyngier --- drivers/irqchip/irq-mbigen.c | 81 ++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 81 insertions(+), 0 deletions(-) diff --git a/drivers/irqchip/irq-mbigen.c b/drivers/irqchip/irq-mbigen.c index 98865b1..a6856f2 100644 --- a/drivers/irqchip/irq-mbigen.c +++ b/drivers/irqchip/irq-mbigen.c @@ -50,6 +50,20 @@ #define REG_MBIGEN_VEC_OFFSET 0x200 /** + * offset of clear register in mbigen node + * This register is used to clear the status + * of interrupt + */ +#define REG_MBIGEN_CLEAR_OFFSET 0xa000 + +/** + * offset of interrupt type register + * This register is used to configure interrupt + * trigger type + */ +#define REG_MBIGEN_TYPE_OFFSET 0x0 + +/** * struct mbigen_device - holds the information of mbigen device. * * @pdev: pointer to the platform device structure of mbigen chip. @@ -72,8 +86,75 @@ static inline unsigned int get_mbigen_vec_reg(irq_hw_number_t hwirq) + REG_MBIGEN_VEC_OFFSET; } +static inline void get_mbigen_type_reg(irq_hw_number_t hwirq, + u32 *mask, u32 *addr) +{ + unsigned int nid, irq_ofst, ofst; + + hwirq -= RESERVED_IRQ_PER_MBIGEN_CHIP; + nid = hwirq / IRQS_PER_MBIGEN_NODE + 1; + irq_ofst = hwirq % IRQS_PER_MBIGEN_NODE; + + *mask = 1 << (irq_ofst % 32); + ofst = irq_ofst / 32 * 4; + + *addr = ofst + nid * MBIGEN_NODE_OFFSET + + REG_MBIGEN_TYPE_OFFSET; +} + +static inline void get_mbigen_clear_reg(irq_hw_number_t hwirq, + u32 *mask, u32 *addr) +{ + unsigned int ofst; + + hwirq -= RESERVED_IRQ_PER_MBIGEN_CHIP; + ofst = hwirq / 32 * 4; + + *mask = 1 << (hwirq % 32); + *addr = ofst + REG_MBIGEN_CLEAR_OFFSET; +} + +static void mbigen_eoi_irq(struct irq_data *data) +{ + void __iomem *base = data->chip_data; + u32 mask, addr; + + get_mbigen_clear_reg(data->hwirq, &mask, &addr); + + writel_relaxed(mask, base + addr); + + irq_chip_eoi_parent(data); +} + +static int mbigen_set_type(struct irq_data *data, unsigned int type) +{ + void __iomem *base = data->chip_data; + u32 mask, addr, val; + + if (type != IRQ_TYPE_LEVEL_HIGH && type != IRQ_TYPE_EDGE_RISING) + return -EINVAL; + + get_mbigen_type_reg(data->hwirq, &mask, &addr); + + val = readl_relaxed(base + addr); + + if (type == IRQ_TYPE_LEVEL_HIGH) + val |= mask; + else + val &= ~mask; + + writel_relaxed(val, base + addr); + + return 0; +} + static struct irq_chip mbigen_irq_chip = { .name = "mbigen-v2", + .irq_mask = irq_chip_mask_parent, + .irq_unmask = irq_chip_unmask_parent, + .irq_eoi = mbigen_eoi_irq, + .irq_set_type = mbigen_set_type, + .irq_set_affinity = irq_chip_set_affinity_parent, }; static void mbigen_write_msg(struct msi_desc *desc, struct msi_msg *msg)