1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * CCI cache coherent interconnect support
4 *
5 * Copyright (C) 2013 ARM Ltd.
6 */
7
8 #ifndef __LINUX_ARM_CCI_H
9 #define __LINUX_ARM_CCI_H
10
11 #include <linux/errno.h>
12 #include <linux/types.h>
13
14 #include <asm/arm-cci.h>
15
16 struct device_node;
17
18 #ifdef CONFIG_ARM_CCI
19 extern bool cci_probed(void);
20 #else
21 static inline bool cci_probed(void) { return false; }
22 #endif
23
24 #ifdef CONFIG_ARM_CCI400_PORT_CTRL
25 extern int cci_ace_get_port(struct device_node *dn);
26 extern int cci_disable_port_by_cpu(u64 mpidr);
27 extern int __cci_control_port_by_device(struct device_node *dn, bool enable);
28 extern int __cci_control_port_by_index(u32 port, bool enable);
29 #else
30 static inline int cci_ace_get_port(struct device_node *dn)
31 {
32 return -ENODEV;
33 }
34 static inline int cci_disable_port_by_cpu(u64 mpidr) { return -ENODEV; }
35 static inline int __cci_control_port_by_device(struct device_node *dn,
36 bool enable)
37 {
38 return -ENODEV;
39 }
40 static inline int __cci_control_port_by_index(u32 port, bool enable)
41 {
42 return -ENODEV;
43 }
44 #endif
45
46 void cci_enable_port_for_self(void);
47
48 #define cci_disable_port_by_device(dev) \
49 __cci_control_port_by_device(dev, false)
50 #define cci_enable_port_by_device(dev) \
51 __cci_control_port_by_device(dev, true)
52 #define cci_disable_port_by_index(dev) \
53 __cci_control_port_by_index(dev, false)
54 #define cci_enable_port_by_index(dev) \
55 __cci_control_port_by_index(dev, true)
56
57 #endif
58
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