From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- arch/mips/loongson2ef/fuloong-2e/Makefile | 6 +++ arch/mips/loongson2ef/fuloong-2e/dma.c | 12 ++++++ arch/mips/loongson2ef/fuloong-2e/irq.c | 65 +++++++++++++++++++++++++++++++ arch/mips/loongson2ef/fuloong-2e/reset.c | 19 +++++++++ 4 files changed, 102 insertions(+) create mode 100644 arch/mips/loongson2ef/fuloong-2e/Makefile create mode 100644 arch/mips/loongson2ef/fuloong-2e/dma.c create mode 100644 arch/mips/loongson2ef/fuloong-2e/irq.c create mode 100644 arch/mips/loongson2ef/fuloong-2e/reset.c (limited to 'arch/mips/loongson2ef/fuloong-2e') diff --git a/arch/mips/loongson2ef/fuloong-2e/Makefile b/arch/mips/loongson2ef/fuloong-2e/Makefile new file mode 100644 index 0000000000..bb58edb3be --- /dev/null +++ b/arch/mips/loongson2ef/fuloong-2e/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# Makefile for Lemote Fuloong2e mini-PC board. +# + +obj-y += irq.o reset.o dma.o diff --git a/arch/mips/loongson2ef/fuloong-2e/dma.c b/arch/mips/loongson2ef/fuloong-2e/dma.c new file mode 100644 index 0000000000..cea167d8ab --- /dev/null +++ b/arch/mips/loongson2ef/fuloong-2e/dma.c @@ -0,0 +1,12 @@ +// SPDX-License-Identifier: GPL-2.0 +#include + +dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr) +{ + return paddr | 0x80000000; +} + +phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dma_addr) +{ + return dma_addr & 0x7fffffff; +} diff --git a/arch/mips/loongson2ef/fuloong-2e/irq.c b/arch/mips/loongson2ef/fuloong-2e/irq.c new file mode 100644 index 0000000000..b1c9d4ee03 --- /dev/null +++ b/arch/mips/loongson2ef/fuloong-2e/irq.c @@ -0,0 +1,65 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2007 Lemote Inc. & Institute of Computing Technology + * Author: Fuxin Zhang, zhangfx@lemote.com + */ +#include + +#include +#include + +#include + +static void i8259_irqdispatch(void) +{ + int irq; + + irq = i8259_irq(); + if (irq >= 0) + do_IRQ(irq); + else + spurious_interrupt(); +} + +asmlinkage void mach_irq_dispatch(unsigned int pending) +{ + if (pending & CAUSEF_IP7) + do_IRQ(MIPS_CPU_IRQ_BASE + 7); + else if (pending & CAUSEF_IP6) /* perf counter loverflow */ + return; + else if (pending & CAUSEF_IP5) + i8259_irqdispatch(); + else if (pending & CAUSEF_IP2) + bonito_irqdispatch(); + else + spurious_interrupt(); +} + +void __init mach_init_irq(void) +{ + int irq; + + /* init all controller + * 0-15 ------> i8259 interrupt + * 16-23 ------> mips cpu interrupt + * 32-63 ------> bonito irq + */ + + /* most bonito irq should be level triggered */ + LOONGSON_INTEDGE = LOONGSON_ICU_SYSTEMERR | LOONGSON_ICU_MASTERERR | + LOONGSON_ICU_RETRYERR | LOONGSON_ICU_MBOXES; + + /* Sets the first-level interrupt dispatcher. */ + mips_cpu_irq_init(); + init_i8259_irqs(); + bonito_irq_init(); + + /* bonito irq at IP2 */ + irq = MIPS_CPU_IRQ_BASE + 2; + if (request_irq(irq, no_action, IRQF_NO_THREAD, "cascade", NULL)) + pr_err("Failed to request irq %d (cascade)\n", irq); + /* 8259 irq at IP5 */ + irq = MIPS_CPU_IRQ_BASE + 5; + if (request_irq(irq, no_action, IRQF_NO_THREAD, "cascade", NULL)) + pr_err("Failed to request irq %d (cascade)\n", irq); +} diff --git a/arch/mips/loongson2ef/fuloong-2e/reset.c b/arch/mips/loongson2ef/fuloong-2e/reset.c new file mode 100644 index 0000000000..8273de1cf4 --- /dev/null +++ b/arch/mips/loongson2ef/fuloong-2e/reset.c @@ -0,0 +1,19 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* Board-specific reboot/shutdown routines + * Copyright (c) 2009 Philippe Vachon + * + * Copyright (C) 2009 Lemote Inc. + * Author: Wu Zhangjin, wuzhangjin@gmail.com + */ + +#include + +void mach_prepare_reboot(void) +{ + LOONGSON_GENCFG &= ~(1 << 2); + LOONGSON_GENCFG |= (1 << 2); +} + +void mach_prepare_shutdown(void) +{ +} -- cgit v1.2.3