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authorIngo Molnar <mingo@kernel.org>2017-12-05 14:14:47 +0100
committerIngo Molnar <mingo@kernel.org>2017-12-17 12:52:34 +0100
commit1784f9144b143a1e8b19fe94083b040aa559182b (patch)
tree8b186ccd2e3f1265bfb81c9260ef97753af49a97 /include/linux/intel-pti.h
parentLinux 4.14 (diff)
downloadlinux-dev-1784f9144b143a1e8b19fe94083b040aa559182b.tar.xz
linux-dev-1784f9144b143a1e8b19fe94083b040aa559182b.zip
drivers/misc/intel/pti: Rename the header file to free up the namespace
We'd like to use the 'PTI' acronym for 'Page Table Isolation' - free up the namespace by renaming the <linux/pti.h> driver header to <linux/intel-pti.h>. (Also standardize the header guard name while at it.) Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: J Freyensee <james_p_freyensee@linux.intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/intel-pti.h')
-rw-r--r--include/linux/intel-pti.h43
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_ */