summaryrefslogtreecommitdiffstats
path: root/arch/mips/mti-malta/malta-amon.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mips/mti-malta/malta-amon.c')
-rw-r--r--arch/mips/mti-malta/malta-amon.c88
1 files changed, 0 insertions, 88 deletions
diff --git a/arch/mips/mti-malta/malta-amon.c b/arch/mips/mti-malta/malta-amon.c
deleted file mode 100644
index 84ac523b0ce0..000000000000
--- a/arch/mips/mti-malta/malta-amon.c
+++ /dev/null
@@ -1,88 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2007 MIPS Technologies, Inc. All rights reserved.
- * Copyright (C) 2013 Imagination Technologies Ltd.
- *
- * Arbitrary Monitor Interface
- */
-#include <linux/kernel.h>
-#include <linux/smp.h>
-
-#include <asm/addrspace.h>
-#include <asm/mipsmtregs.h>
-#include <asm/mips-boards/launch.h>
-#include <asm/vpe.h>
-
-int amon_cpu_avail(int cpu)
-{
- struct cpulaunch *launch = (struct cpulaunch *)CKSEG0ADDR(CPULAUNCH);
-
- if (cpu < 0 || cpu >= NCPULAUNCH) {
- pr_debug("avail: cpu%d is out of range\n", cpu);
- return 0;
- }
-
- launch += cpu;
- if (!(launch->flags & LAUNCH_FREADY)) {
- pr_debug("avail: cpu%d is not ready\n", cpu);
- return 0;
- }
- if (launch->flags & (LAUNCH_FGO|LAUNCH_FGONE)) {
- pr_debug("avail: too late.. cpu%d is already gone\n", cpu);
- return 0;
- }
-
- return 1;
-}
-
-int amon_cpu_start(int cpu,
- unsigned long pc, unsigned long sp,
- unsigned long gp, unsigned long a0)
-{
- volatile struct cpulaunch *launch =
- (struct cpulaunch *)CKSEG0ADDR(CPULAUNCH);
-
- if (!amon_cpu_avail(cpu))
- return -1;
- if (cpu == smp_processor_id()) {
- pr_debug("launch: I am cpu%d!\n", cpu);
- return -1;
- }
- launch += cpu;
-
- pr_debug("launch: starting cpu%d\n", cpu);
-
- launch->pc = pc;
- launch->gp = gp;
- launch->sp = sp;
- launch->a0 = a0;
-
- smp_wmb(); /* Target must see parameters before go */
- launch->flags |= LAUNCH_FGO;
- smp_wmb(); /* Target must see go before we poll */
-
- while ((launch->flags & LAUNCH_FGONE) == 0)
- ;
- smp_rmb(); /* Target will be updating flags soon */
- pr_debug("launch: cpu%d gone!\n", cpu);
-
- return 0;
-}
-
-#ifdef CONFIG_MIPS_VPE_LOADER_CMP
-int vpe_run(struct vpe *v)
-{
- struct vpe_notifications *n;
-
- if (amon_cpu_start(aprp_cpu_index(), v->__start, 0, 0, 0) < 0)
- return -1;
-
- list_for_each_entry(n, &v->notify, list)
- n->start(VPE_MODULE_MINOR);
-
- return 0;
-}
-#endif