97e7abc5e0
flowctrl_write_cpu_csr uses the cpu halt offsets and vice versa. This patch
fixes this bug.
Reported-by: Dan Willemsen <dwillemsen@nvidia.com>
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
[swarren: This problem was introduced in v3.4-rc1, in commit 26fe681 "ARM:
tegra: functions to access the flowcontroller", when this file was first
added]
Signed-off-by: Stephen Warren <swarren@nvidia.com>
63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
/*
|
|
* arch/arm/mach-tegra/flowctrl.c
|
|
*
|
|
* functions and macros to control the flowcontroller
|
|
*
|
|
* Copyright (c) 2010-2012, NVIDIA Corporation. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions 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 <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/io.h>
|
|
|
|
#include <mach/iomap.h>
|
|
|
|
#include "flowctrl.h"
|
|
|
|
u8 flowctrl_offset_halt_cpu[] = {
|
|
FLOW_CTRL_HALT_CPU0_EVENTS,
|
|
FLOW_CTRL_HALT_CPU1_EVENTS,
|
|
FLOW_CTRL_HALT_CPU1_EVENTS + 8,
|
|
FLOW_CTRL_HALT_CPU1_EVENTS + 16,
|
|
};
|
|
|
|
u8 flowctrl_offset_cpu_csr[] = {
|
|
FLOW_CTRL_CPU0_CSR,
|
|
FLOW_CTRL_CPU1_CSR,
|
|
FLOW_CTRL_CPU1_CSR + 8,
|
|
FLOW_CTRL_CPU1_CSR + 16,
|
|
};
|
|
|
|
static void flowctrl_update(u8 offset, u32 value)
|
|
{
|
|
void __iomem *addr = IO_ADDRESS(TEGRA_FLOW_CTRL_BASE) + offset;
|
|
|
|
writel(value, addr);
|
|
|
|
/* ensure the update has reached the flow controller */
|
|
wmb();
|
|
readl_relaxed(addr);
|
|
}
|
|
|
|
void flowctrl_write_cpu_csr(unsigned int cpuid, u32 value)
|
|
{
|
|
return flowctrl_update(flowctrl_offset_cpu_csr[cpuid], value);
|
|
}
|
|
|
|
void flowctrl_write_cpu_halt(unsigned int cpuid, u32 value)
|
|
{
|
|
return flowctrl_update(flowctrl_offset_halt_cpu[cpuid], value);
|
|
}
|