blob: 1fb2d2e544fe018a39c097be519b5294b188b4ec (
plain)
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
114
|
/*
* stm.h
*
* Copyright (C) Intel 2011
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License 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.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* The STM (Sytem Trace Macro) Unit driver configure trace output
* to the Intel Tangier PTI port and DWC3 USB xHCI controller
* out of the mobile device for analysis with a debugging tool
* (Lauterbach, Fido). This is part of a solution for the MIPI P1149.7,
* compact JTAG, standard and USB Debug-Class
*
* This header file will allow other parts of the OS to use the
* interface to write out it's contents for debugging a mobile system.
*/
#ifndef _STM_H
#define _STM_H
#include <linux/pci.h>
/* STM_CTRL register bitmap */
/**
* struct stm_ctrl - STM control block
* @usb_debug_en : STM needs to redirece the trace packet to the USB3
* @pti_io_idle_threshold : threshold for disabling the IO clock.
* @pkt_transfer_size : asserts the *buff_avail signal after it has
* 1 or 2 KB of data in buffer
* @dis_dcu7_use : disables the useage of DCU7 instead of PTI_Disable
* @en_sw_ms : enables software master usage
* @mst_id_en : enables the PTI unit to suppress sending the Master Command
* @d64_cmd_en : PTI unit to use the D64 commands
* @pti_out_mode_sel
* 0 = PTI 4-bits legacy end user
* 1 = PTI 4-bits NiDnT
* 2 = PTI 16-bits
* 3 = PTI 12-bits
* 4 = PTI 8-bits
* @pti_out_en : PTI output enable muxselects that propagate
* to the FLIS to be enabled
* @lossy_mode_enable : Output Agent will continue to accept writes,
* even if the queuese are full. The data will be dropped and the
* dropped packet indicator will be incremented
* @time_stamp_enable : Enable time stamping the final packet in trace record.
*/
struct stm_ctrl {
union {
struct {
u32 time_stamp_enable:1;
u32 lossy_mode_enable:1;
u32 pti_out_en:1;
u32 reserved:1;
u32 pti_out_mode_sel:4;
u32 d64_cmd_en:1;
u32 mst_id_en:1;
u32 en_sw_ms:1;
u32 dis_dcu7_use:1;
u32 pkt_transfer_size:1;
u32 pti_io_idle_threshold:5;
u32 usb_debug_en:1;
u32 reserved31_19:13;
};
u32 reg_word;
};
} __packed;
/**
* struct stm_usb3_ctrl - STM buffer USB3 hardware EBC
* @region_closure_threshold : This is the threshold for closing
* the 1KB region in the debug trace buffer. STM will wait for the
* configured time as specified in this field and then closes the region.
* The unit of this field is in 64 us. Eg when this field value is set
* to 0xffff, then it indicates 2 ms
* @empty_packets_threshold : When STM does not have data to send,
* it can send empty packets to keep the USB3 alive. This is useful
* in case of ISOC traffic, because in this mode the wake up latency
* is high. STM will send the configured number of empty packets as
* specified in this field.
*/
struct stm_usb3_ctrl {
union {
struct {
u32 region_closure_threshold:15;
u32 empty_packets_threshold:6;
u32 reserved31_21:11;
};
u32 reg_word;
};
} __packed;
struct stm_dev {
unsigned long stm_addr;
unsigned long stm_reg_base;
unsigned long stm_trb_base;
void __iomem *stm_ioaddr;
void __iomem *trb_ioaddr;
struct stm_ctrl stm_ctrl_hwreg;
struct stm_usb3_ctrl stm_usb3_hwreg;
};
int stm_dev_init(struct pci_dev *pdev, struct stm_dev *dev_stm);
void stm_dev_clean(struct pci_dev *pdev, struct stm_dev *dev_stm);
#endif /* _STM_H */
|
