1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Functions and macros to control the flowcontroller
4 *
5 * Copyright (c) 2010-2012, NVIDIA Corporation. All rights reserved.
6 */
7
8 #ifndef __SOC_TEGRA_FLOWCTRL_H__
9 #define __SOC_TEGRA_FLOWCTRL_H__
10
11 #define FLOW_CTRL_HALT_CPU0_EVENTS 0x0
12 #define FLOW_CTRL_WAITEVENT (2 << 29)
13 #define FLOW_CTRL_WAIT_FOR_INTERRUPT (4 << 29)
14 #define FLOW_CTRL_JTAG_RESUME (1 << 28)
15 #define FLOW_CTRL_SCLK_RESUME (1 << 27)
16 #define FLOW_CTRL_HALT_CPU_IRQ (1 << 10)
17 #define FLOW_CTRL_HALT_CPU_FIQ (1 << 8)
18 #define FLOW_CTRL_HALT_LIC_IRQ (1 << 11)
19 #define FLOW_CTRL_HALT_LIC_FIQ (1 << 10)
20 #define FLOW_CTRL_HALT_GIC_IRQ (1 << 9)
21 #define FLOW_CTRL_HALT_GIC_FIQ (1 << 8)
22 #define FLOW_CTRL_CPU0_CSR 0x8
23 #define FLOW_CTRL_CSR_INTR_FLAG (1 << 15)
24 #define FLOW_CTRL_CSR_EVENT_FLAG (1 << 14)
25 #define FLOW_CTRL_CSR_ENABLE_EXT_CRAIL (1 << 13)
26 #define FLOW_CTRL_CSR_ENABLE_EXT_NCPU (1 << 12)
27 #define FLOW_CTRL_CSR_ENABLE_EXT_MASK ( \
28 FLOW_CTRL_CSR_ENABLE_EXT_NCPU | \
29 FLOW_CTRL_CSR_ENABLE_EXT_CRAIL)
30 #define FLOW_CTRL_CSR_ENABLE (1 << 0)
31 #define FLOW_CTRL_HALT_CPU1_EVENTS 0x14
32 #define FLOW_CTRL_CPU1_CSR 0x18
33
34 #define TEGRA20_FLOW_CTRL_CSR_WFE_CPU0 (1 << 4)
35 #define TEGRA20_FLOW_CTRL_CSR_WFE_BITMAP (3 << 4)
36 #define TEGRA20_FLOW_CTRL_CSR_WFI_BITMAP 0
37
38 #define TEGRA30_FLOW_CTRL_CSR_WFI_CPU0 (1 << 8)
39 #define TEGRA30_FLOW_CTRL_CSR_WFE_BITMAP (0xF << 4)
40 #define TEGRA30_FLOW_CTRL_CSR_WFI_BITMAP (0xF << 8)
41
42 #ifndef __ASSEMBLY__
43 #ifdef CONFIG_SOC_TEGRA_FLOWCTRL
44 u32 flowctrl_read_cpu_csr(unsigned int cpuid);
45 void flowctrl_write_cpu_csr(unsigned int cpuid, u32 value);
46 void flowctrl_write_cpu_halt(unsigned int cpuid, u32 value);
47
48 void flowctrl_cpu_suspend_enter(unsigned int cpuid);
49 void flowctrl_cpu_suspend_exit(unsigned int cpuid);
50 #else
51 static inline u32 flowctrl_read_cpu_csr(unsigned int cpuid)
52 {
53 return 0;
54 }
55
56 static inline void flowctrl_write_cpu_csr(unsigned int cpuid, u32 value)
57 {
58 }
59
60 static inline void flowctrl_write_cpu_halt(unsigned int cpuid, u32 value) {}
61
62 static inline void flowctrl_cpu_suspend_enter(unsigned int cpuid)
63 {
64 }
65
66 static inline void flowctrl_cpu_suspend_exit(unsigned int cpuid)
67 {
68 }
69 #endif /* CONFIG_SOC_TEGRA_FLOWCTRL */
70 #endif /* __ASSEMBLY */
71 #endif /* __SOC_TEGRA_FLOWCTRL_H__ */
72
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