diff -drupN a/arch/arm/mach-sunxi/irq-gic-common-sun8iw6.c b/arch/arm/mach-sunxi/irq-gic-common-sun8iw6.c --- a/arch/arm/mach-sunxi/irq-gic-common-sun8iw6.c 1970-01-01 03:00:00.000000000 +0300 +++ b/arch/arm/mach-sunxi/irq-gic-common-sun8iw6.c 2022-06-12 05:28:14.000000000 +0300 @@ -0,0 +1,126 @@ +/* + * Copyright (C) 2002 ARM Limited, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include +#include +#include +#include + +#include "irq-gic-common.h" + +extern u32 cpu_gic_readl(void __iomem *reg); +extern void cpu_gic_writel(u32 val, void __iomem *reg); + +void gic_enable_quirks(u32 iidr, const struct gic_quirk *quirks, + void *data) +{ + for (; quirks->desc; quirks++) { + if (quirks->iidr != (quirks->mask & iidr)) + continue; + quirks->init(data); + pr_info("GIC: enabling workaround for %s\n", quirks->desc); + } +} + +int gic_configure_irq(unsigned int irq, unsigned int type, + void __iomem *base, void (*sync_access)(void)) +{ + u32 confmask = 0x2 << ((irq % 16) * 2); + u32 confoff = (irq / 16) * 4; + u32 val, oldval; + int ret = 0; + + /* + * Read current configuration register, and insert the config + * for "irq", depending on "type". + */ + val = oldval = cpu_gic_readl(base + GIC_DIST_CONFIG + confoff); + if (type & IRQ_TYPE_LEVEL_MASK) + val &= ~confmask; + else if (type & IRQ_TYPE_EDGE_BOTH) + val |= confmask; + + /* + * Write back the new configuration, and possibly re-enable + * the interrupt. If we tried to write a new configuration and failed, + * return an error. + */ + cpu_gic_writel(val, base + GIC_DIST_CONFIG + confoff); + if (cpu_gic_readl(base + GIC_DIST_CONFIG + confoff) != val && val != oldval) + ret = -EINVAL; + + if (sync_access) + sync_access(); + + return ret; +} + +void __init gic_dist_config(void __iomem *base, int gic_irqs, + void (*sync_access)(void)) +{ + unsigned int i; + + /* + * Set all global interrupts to be level triggered, active low. + */ + for (i = 32; i < gic_irqs; i += 16) + cpu_gic_writel(GICD_INT_ACTLOW_LVLTRIG, + base + GIC_DIST_CONFIG + i / 4); + + /* + * Set priority on all global interrupts. + */ + for (i = 32; i < gic_irqs; i += 4) + cpu_gic_writel(GICD_INT_DEF_PRI_X4, base + GIC_DIST_PRI + i); + + /* + * Deactivate and disable all SPIs. Leave the PPI and SGIs + * alone as they are in the redistributor registers on GICv3. + */ + for (i = 32; i < gic_irqs; i += 32) { + cpu_gic_writel(GICD_INT_EN_CLR_X32, + base + GIC_DIST_ACTIVE_CLEAR + i / 8); + cpu_gic_writel(GICD_INT_EN_CLR_X32, + base + GIC_DIST_ENABLE_CLEAR + i / 8); + } + + if (sync_access) + sync_access(); +} + +void gic_cpu_config(void __iomem *base, void (*sync_access)(void)) +{ + int i; + + /* + * Deal with the banked PPI and SGI interrupts - disable all + * PPI interrupts, ensure all SGI interrupts are enabled. + * Make sure everything is deactivated. + */ + cpu_gic_writel(GICD_INT_EN_CLR_X32, base + GIC_DIST_ACTIVE_CLEAR); + cpu_gic_writel(GICD_INT_EN_CLR_PPI, base + GIC_DIST_ENABLE_CLEAR); + cpu_gic_writel(GICD_INT_EN_SET_SGI, base + GIC_DIST_ENABLE_SET); + + /* + * Set priority on PPI and SGI interrupts + */ + for (i = 0; i < 32; i += 4) + cpu_gic_writel(GICD_INT_DEF_PRI_X4, + base + GIC_DIST_PRI + i * 4 / 4); + + if (sync_access) + sync_access(); +}