xref: /openbmc/linux/drivers/hwtracing/intel_th/gth.h (revision 7e6f7d24)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Intel(R) Trace Hub Global Trace Hub (GTH) data structures
4  *
5  * Copyright (C) 2014-2015 Intel Corporation.
6  */
7 
8 #ifndef __INTEL_TH_GTH_H__
9 #define __INTEL_TH_GTH_H__
10 
11 /* Map output port parameter bits to symbolic names */
12 #define TH_OUTPUT_PARM(name)			\
13 	TH_OUTPUT_ ## name
14 
15 enum intel_th_output_parm {
16 	/* output port type */
17 	TH_OUTPUT_PARM(port),
18 	/* generate NULL packet */
19 	TH_OUTPUT_PARM(null),
20 	/* packet drop */
21 	TH_OUTPUT_PARM(drop),
22 	/* port in reset state */
23 	TH_OUTPUT_PARM(reset),
24 	/* flush out data */
25 	TH_OUTPUT_PARM(flush),
26 	/* mainenance packet frequency */
27 	TH_OUTPUT_PARM(smcfreq),
28 };
29 
30 /*
31  * Register offsets
32  */
33 enum {
34 	REG_GTH_GTHOPT0		= 0x00, /* Output ports 0..3 config */
35 	REG_GTH_GTHOPT1		= 0x04, /* Output ports 4..7 config */
36 	REG_GTH_SWDEST0		= 0x08, /* Switching destination masters 0..7 */
37 	REG_GTH_GSWTDEST	= 0x88, /* Global sw trace destination */
38 	REG_GTH_SMCR0		= 0x9c, /* STP mainenance for ports 0/1 */
39 	REG_GTH_SMCR1		= 0xa0, /* STP mainenance for ports 2/3 */
40 	REG_GTH_SMCR2		= 0xa4, /* STP mainenance for ports 4/5 */
41 	REG_GTH_SMCR3		= 0xa8, /* STP mainenance for ports 6/7 */
42 	REG_GTH_SCR		= 0xc8, /* Source control (storeEn override) */
43 	REG_GTH_STAT		= 0xd4, /* GTH status */
44 	REG_GTH_SCR2		= 0xd8, /* Source control (force storeEn off) */
45 	REG_GTH_DESTOVR		= 0xdc, /* Destination override */
46 	REG_GTH_SCRPD0		= 0xe0, /* ScratchPad[0] */
47 	REG_GTH_SCRPD1		= 0xe4, /* ScratchPad[1] */
48 	REG_GTH_SCRPD2		= 0xe8, /* ScratchPad[2] */
49 	REG_GTH_SCRPD3		= 0xec, /* ScratchPad[3] */
50 	REG_TSCU_TSUCTRL	= 0x2000, /* TSCU control register */
51 	REG_TSCU_TSCUSTAT	= 0x2004, /* TSCU status register */
52 };
53 
54 /* waiting for Pipeline Empty bit(s) to assert for GTH */
55 #define GTH_PLE_WAITLOOP_DEPTH	10000
56 
57 #define TSUCTRL_CTCRESYNC	BIT(0)
58 #define TSCUSTAT_CTCSYNCING	BIT(1)
59 
60 #endif /* __INTEL_TH_GTH_H__ */
61