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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /arch/mips/loongson2ef/fuloong-2e
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/mips/loongson2ef/fuloong-2e')
-rw-r--r--arch/mips/loongson2ef/fuloong-2e/Makefile6
-rw-r--r--arch/mips/loongson2ef/fuloong-2e/dma.c12
-rw-r--r--arch/mips/loongson2ef/fuloong-2e/irq.c65
-rw-r--r--arch/mips/loongson2ef/fuloong-2e/reset.c19
4 files changed, 102 insertions, 0 deletions
diff --git a/arch/mips/loongson2ef/fuloong-2e/Makefile b/arch/mips/loongson2ef/fuloong-2e/Makefile
new file mode 100644
index 000000000..bb58edb3b
--- /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 000000000..cea167d8a
--- /dev/null
+++ b/arch/mips/loongson2ef/fuloong-2e/dma.c
@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/dma-direct.h>
+
+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 000000000..b1c9d4ee0
--- /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 <linux/interrupt.h>
+
+#include <asm/irq_cpu.h>
+#include <asm/i8259.h>
+
+#include <loongson.h>
+
+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 000000000..8273de1cf
--- /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 <philippe@cowpig.ca>
+ *
+ * Copyright (C) 2009 Lemote Inc.
+ * Author: Wu Zhangjin, wuzhangjin@gmail.com
+ */
+
+#include <loongson.h>
+
+void mach_prepare_reboot(void)
+{
+ LOONGSON_GENCFG &= ~(1 << 2);
+ LOONGSON_GENCFG |= (1 << 2);
+}
+
+void mach_prepare_shutdown(void)
+{
+}