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author | Dave Airlie <airlied@redhat.com> | 2017-12-19 14:37:24 +0300 |
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committer | Dave Airlie <airlied@redhat.com> | 2017-12-19 14:37:24 +0300 |
commit | 6b7dcb536e3535444c39286333f10d06d2f44fb5 (patch) | |
tree | 6a4c1e30e5900626e506d46b100d21a2fcd59003 /include/linux/intel-pti.h | |
parent | a942b3c2cddc4378482a427845d15c78eb50f4d4 (diff) | |
parent | 1291a0d5049dbc06baaaf66a9ff3f53db493b19b (diff) | |
download | linux-6b7dcb536e3535444c39286333f10d06d2f44fb5.tar.xz |
BackMerge tag 'v4.15-rc4' into drm-next
Linux 4.15-rc4
Daniel requested it to fix some messy conflicts.
Diffstat (limited to 'include/linux/intel-pti.h')
-rw-r--r-- | include/linux/intel-pti.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/include/linux/intel-pti.h b/include/linux/intel-pti.h new file mode 100644 index 000000000000..2710d72de3c9 --- /dev/null +++ b/include/linux/intel-pti.h @@ -0,0 +1,43 @@ +/* + * 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 PTI (Parallel Trace Interface) driver directs trace data routed from + * various parts in the system out through the Intel Penwell PTI port and + * 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. + * + * 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 LINUX_INTEL_PTI_H_ +#define LINUX_INTEL_PTI_H_ + +/* offset for last dword of any PTI message. Part of MIPI P1149.7 */ +#define PTI_LASTDWORD_DTS 0x30 + +/* basic structure used as a write address to the PTI HW */ +struct pti_masterchannel { + u8 master; + u8 channel; +}; + +/* the following functions are defined in misc/pti.c */ +void pti_writedata(struct pti_masterchannel *mc, u8 *buf, int count); +struct pti_masterchannel *pti_request_masterchannel(u8 type, + const char *thread_name); +void pti_release_masterchannel(struct pti_masterchannel *mc); + +#endif /* LINUX_INTEL_PTI_H_ */ |