cc153331fad75b6e8faf8aaed9d4af5168d244ae
[linux-3.10.git] / arch / arm / mach-tegra / flowctrl.h
1 /*
2  * arch/arm/mach-tegra/flowctrl.h
3  *
4  * functions and macros to control the flowcontroller
5  *
6  * Copyright (c) 2010-2012, NVIDIA Corporation. All rights reserved.
7  *
8  * This program is free software; you can redistribute it and/or modify it
9  * under the terms and conditions of the GNU General Public License,
10  * version 2, as published by the Free Software Foundation.
11  *
12  * This program is distributed in the hope that it will be useful, but WITHOUT
13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
15  * more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
19  */
20
21 #ifndef __MACH_TEGRA_FLOWCTRL_H
22 #define __MACH_TEGRA_FLOWCTRL_H
23
24 #define FLOW_CTRL_HALT_CPU0_EVENTS      0x0
25 #define   FLOW_CTRL_WAITEVENT           (2 << 29)
26 #define   FLOW_CTRL_WAIT_FOR_INTERRUPT  (4 << 29)
27 #define   FLOW_CTRL_JTAG_RESUME         (1 << 28)
28 #define   FLOW_CTRL_HALT_CPU_IRQ        (1 << 10)
29 #define   FLOW_CTRL_HALT_CPU_FIQ        (1 << 8)
30 #define FLOW_CTRL_CPU0_CSR              0x8
31 #define   FLOW_CTRL_CSR_INTR_FLAG       (1 << 15)
32 #define   FLOW_CTRL_CSR_EVENT_FLAG      (1 << 14)
33 #define   FLOW_CTRL_CSR_IMMEDIATE_WAKE  (1 << 3)
34 #define   FLOW_CTRL_CSR_SWITCH_CLUSTER  (1 << 2)
35 #define   FLOW_CTRL_CSR_ENABLE          (1 << 0)
36 #define FLOW_CTRL_HALT_CPU1_EVENTS      0x14
37 #define FLOW_CTRL_CPU1_CSR              0x18
38
39 #ifdef CONFIG_ARCH_TEGRA_2x_SOC
40 #define FLOW_CTRL_CSR_WFE_CPU0          (1 << 4)
41 #define FLOW_CTRL_CSR_WFE_BITMAP        (3 << 4)
42 #define FLOW_CTRL_CSR_WFI_BITMAP        0
43 #else
44 #define FLOW_CTRL_CSR_WFE_BITMAP        (0xF << 4)
45 #define FLOW_CTRL_CSR_WFI_CPU0          (1 << 8)
46 #define FLOW_CTRL_CSR_WFI_BITMAP        (0xF << 8)
47 #endif
48
49 #ifndef __ASSEMBLY__
50 u32 flowctrl_read_cpu_csr(unsigned int cpuid);
51 void flowctrl_write_cpu_csr(unsigned int cpuid, u32 value);
52 u32 flowctrl_read_cpu_halt(unsigned int cpuid);
53 void flowctrl_write_cpu_halt(unsigned int cpuid, u32 value);
54 #endif
55
56 #endif