| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) Intel 2011 |
| 4 | * |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 5 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 6 | * |
| 7 | * The PTI (Parallel Trace Interface) driver directs trace data routed from |
| 8 | * various parts in the system out through the Intel Penwell PTI port and |
| 9 | * out of the mobile device for analysis with a debugging tool |
| 10 | * (Lauterbach, Fido). This is part of a solution for the MIPI P1149.7, |
| 11 | * compact JTAG, standard. |
| 12 | * |
| 13 | * This header file will allow other parts of the OS to use the |
| 14 | * interface to write out it's contents for debugging a mobile system. |
| 15 | */ |
| 16 | |
| 17 | #ifndef LINUX_INTEL_PTI_H_ |
| 18 | #define LINUX_INTEL_PTI_H_ |
| 19 | |
| 20 | /* offset for last dword of any PTI message. Part of MIPI P1149.7 */ |
| 21 | #define PTI_LASTDWORD_DTS 0x30 |
| 22 | |
| 23 | /* basic structure used as a write address to the PTI HW */ |
| 24 | struct pti_masterchannel { |
| 25 | u8 master; |
| 26 | u8 channel; |
| 27 | }; |
| 28 | |
| 29 | /* the following functions are defined in misc/pti.c */ |
| 30 | void pti_writedata(struct pti_masterchannel *mc, u8 *buf, int count); |
| 31 | struct pti_masterchannel *pti_request_masterchannel(u8 type, |
| 32 | const char *thread_name); |
| 33 | void pti_release_masterchannel(struct pti_masterchannel *mc); |
| 34 | |
| 35 | #endif /* LINUX_INTEL_PTI_H_ */ |