1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
/* Copyright (c) 2011-2012, 2016 The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only 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.
*/
#ifndef _CORESIGHT_PRIV_H
#define _CORESIGHT_PRIV_H
#include <linux/bitops.h>
#include <linux/io.h>
#include <linux/coresight.h>
/*
* Coresight management registers (0xf00-0xfcc)
* 0xfa0 - 0xfa4: Management registers in PFTv1.0
* Trace registers in PFTv1.1
*/
#define CORESIGHT_ITCTRL 0xf00
#define CORESIGHT_CLAIMSET 0xfa0
#define CORESIGHT_CLAIMCLR 0xfa4
#define CORESIGHT_LAR 0xfb0
#define CORESIGHT_LSR 0xfb4
#define CORESIGHT_AUTHSTATUS 0xfb8
#define CORESIGHT_DEVID 0xfc8
#define CORESIGHT_DEVTYPE 0xfcc
#define TIMEOUT_US 100
#define BM(lsb, msb) ((BIT(msb) - BIT(lsb)) + BIT(msb))
#define BMVAL(val, lsb, msb) ((val & GENMASK(msb, lsb)) >> lsb)
#define BVAL(val, n) ((val & BIT(n)) >> n)
static inline void CS_LOCK(void __iomem *addr)
{
do {
/* Wait for things to settle */
mb();
writel_relaxed(0x0, addr + CORESIGHT_LAR);
} while (0);
}
static inline void CS_UNLOCK(void __iomem *addr)
{
do {
writel_relaxed(CORESIGHT_UNLOCK, addr + CORESIGHT_LAR);
/* Make sure everyone has seen this */
mb();
} while (0);
}
static inline bool coresight_authstatus_enabled(void __iomem *addr)
{
int ret;
unsigned auth_val;
if (!addr)
return false;
auth_val = readl_relaxed(addr + CORESIGHT_AUTHSTATUS);
if ((0x2 == BMVAL(auth_val, 0, 1)) ||
(0x2 == BMVAL(auth_val, 2, 3)) ||
(0x2 == BMVAL(auth_val, 4, 5)) ||
(0x2 == BMVAL(auth_val, 6, 7)))
ret = false;
else
ret = true;
return ret;
}
#ifdef CONFIG_CORESIGHT_SOURCE_ETM3X
extern int etm_readl_cp14(u32 off, unsigned int *val);
extern int etm_writel_cp14(u32 off, u32 val);
#else
static inline int etm_readl_cp14(u32 off, unsigned int *val) { return 0; }
static inline int etm_writel_cp14(u32 off, u32 val) { return 0; }
#endif
#ifdef CONFIG_CORESIGHT_CSR
extern void msm_qdss_csr_enable_bam_to_usb(void);
extern void msm_qdss_csr_disable_bam_to_usb(void);
extern void msm_qdss_csr_disable_flush(void);
extern int coresight_csr_hwctrl_set(uint64_t addr, uint32_t val);
#else
static inline void msm_qdss_csr_enable_bam_to_usb(void) {}
static inline void msm_qdss_csr_disable_bam_to_usb(void) {}
static inline void msm_qdss_csr_disable_flush(void) {}
static inline int coresight_csr_hwctrl_set(uint64_t addr,
uint32_t val) { return -EINVAL; }
#endif
#endif
|
