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
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_CORESIGHT_STM_H_
#define __LINUX_CORESIGHT_STM_H_
#include <asm/local.h>
#include <linux/stm.h>
#include <linux/bitmap.h>
#include <uapi/linux/coresight-stm.h>
#define BYTES_PER_CHANNEL 256
enum stm_pkt_type {
STM_PKT_TYPE_DATA = 0x98,
STM_PKT_TYPE_FLAG = 0xE8,
STM_PKT_TYPE_TRIG = 0xF8,
};
#define stm_channel_off(type, opts) (type & ~opts)
#define stm_channel_addr(drvdata, ch) (drvdata->chs.base + \
(ch * BYTES_PER_CHANNEL))
#define stm_log_inv(entity_id, proto_id, data, size) \
stm_trace(STM_FLAG_NONE, entity_id, proto_id, data, size)
#define stm_log_inv_ts(entity_id, proto_id, data, size) \
stm_trace(STM_FLAG_TIMESTAMPED, entity_id, proto_id, \
data, size)
#define stm_log_gtd(entity_id, proto_id, data, size) \
stm_trace(STM_FLAG_GUARANTEED, entity_id, proto_id, \
data, size)
#define stm_log_gtd_ts(entity_id, proto_id, data, size) \
stm_trace(STM_FLAG_GUARANTEED | STM_OPTION_TIMESTAMPED, \
entity_id, proto_id, data, size)
#define stm_log(entity_id, data, size) \
stm_log_inv_ts(entity_id, 0, data, size)
/**
* struct channel_space - central management entity for extended ports
* @base: memory mapped base address where channels start.
* @phys: physical base address of channel region.
* @guaraneed: is the channel delivery guaranteed.
* @bitmap: channel info for OST packet
*/
struct channel_space {
void __iomem *base;
phys_addr_t phys;
unsigned long *guaranteed;
unsigned long *bitmap;
};
/**
* struct stm_drvdata - specifics associated to an STM component
* @base: memory mapped base address for this component.
* @dev: the device entity associated to this component.
* @atclk: optional clock for the core parts of the STM.
* @csdev: component vitals needed by the framework.
* @spinlock: only one at a time pls.
* @chs: the channels accociated to this STM.
* @entities currently configured OST entities.
* @stm: structure associated to the generic STM interface.
* @mode: this tracer's mode, i.e sysFS, or disabled.
* @traceid: value of the current ID for this component.
* @write_bytes: Maximus bytes this STM can write at a time.
* @stmsper: settings for register STMSPER.
* @stmspscr: settings for register STMSPSCR.
* @numsp: the total number of stimulus port support by this STM.
* @stmheer: settings for register STMHEER.
* @stmheter: settings for register STMHETER.
* @stmhebsr: settings for register STMHEBSR.
* @ch_alloc_fail_count: Number of ch allocation failures over time.
*/
struct stm_drvdata {
void __iomem *base;
struct device *dev;
struct clk *atclk;
struct coresight_device *csdev;
spinlock_t spinlock;
struct channel_space chs;
bool enable;
struct channel_space debug_status_chs;
bool master_enable;
DECLARE_BITMAP(entities, OST_ENTITY_MAX);
struct stm_data stm;
local_t mode;
u8 traceid;
u32 write_bytes;
u32 stmsper;
u32 stmspscr;
u32 numsp;
u32 stmheer;
u32 stmheter;
u32 stmhebsr;
u32 ch_alloc_fail_count;
};
#ifdef CONFIG_CORESIGHT_STM
extern int stm_trace(uint32_t flags, uint8_t entity_id, uint8_t proto_id,
const void *data, uint32_t size);
void stm_send(void *addr, const void *data, u32 size, u8 write_bytes);
#else
static inline int stm_trace(uint32_t flags, uint8_t entity_id,
uint8_t proto_id, const void *data, uint32_t size)
{
return 0;
}
static inline void stm_send(void *addr, const void *data, u32 size,
u8 write_bytes) {}
#endif
#endif
|
