Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756052AbbLQMCE (ORCPT ); Thu, 17 Dec 2015 07:02:04 -0500 Received: from szxga02-in.huawei.com ([119.145.14.65]:49245 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755924AbbLQMCA (ORCPT ); Thu, 17 Dec 2015 07:02:00 -0500 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 Content-Type: text/plain 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 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3049 Lines: 119 From: Ma Jun Add the interrupt controller chip operation functions of mbigen chip. Signed-off-by: Ma Jun --- 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) -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/