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-rw-r--r--arch/parisc/kernel/pa7300lc.c51
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/parisc/kernel/pa7300lc.c b/arch/parisc/kernel/pa7300lc.c
new file mode 100644
index 000000000..0d770ac83
--- /dev/null
+++ b/arch/parisc/kernel/pa7300lc.c
@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * linux/arch/parisc/kernel/pa7300lc.c
+ * - PA7300LC-specific functions
+ *
+ * Copyright (C) 2000 Philipp Rumpf */
+
+#include <linux/sched.h>
+#include <linux/sched/debug.h>
+#include <linux/smp.h>
+#include <linux/kernel.h>
+#include <asm/io.h>
+#include <asm/ptrace.h>
+#include <asm/machdep.h>
+
+/* CPU register indices */
+
+#define MIOC_STATUS 0xf040
+#define MIOC_CONTROL 0xf080
+#define MDERRADD 0xf0e0
+#define DMAERR 0xf0e8
+#define DIOERR 0xf0ec
+#define HIDMAMEM 0xf0f4
+
+/* this returns the HPA of the CPU it was called on */
+static u32 cpu_hpa(void)
+{
+ return 0xfffb0000;
+}
+
+static void pa7300lc_lpmc(int code, struct pt_regs *regs)
+{
+ u32 hpa;
+ printk(KERN_WARNING "LPMC on CPU %d\n", smp_processor_id());
+
+ show_regs(regs);
+
+ hpa = cpu_hpa();
+ printk(KERN_WARNING
+ "MIOC_CONTROL %08x\n" "MIOC_STATUS %08x\n"
+ "MDERRADD %08x\n" "DMAERR %08x\n"
+ "DIOERR %08x\n" "HIDMAMEM %08x\n",
+ gsc_readl(hpa+MIOC_CONTROL), gsc_readl(hpa+MIOC_STATUS),
+ gsc_readl(hpa+MDERRADD), gsc_readl(hpa+DMAERR),
+ gsc_readl(hpa+DIOERR), gsc_readl(hpa+HIDMAMEM));
+}
+
+void pa7300lc_init(void)
+{
+ cpu_lpmc = pa7300lc_lpmc;
+}