Merge tag 'parisc-for-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

Pull parisc updates from Helge Deller:
 "Minor enhancements and fixes, specifically:

   - report emulation and alignment faults via perf

   - add initial kernel-side support for perf_events

   - small initialization fixes in the parisc firmware layer

   - adjust TC* constants and avoid referencing termio structs to avoid
     userspace build errors"

* tag 'parisc-for-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Fix iodc and device path return values on old machines
  parisc: Firmware: Fix returned path for PDC_MODULE_FIND on older machines
  parisc: Add initial kernel-side perf_event support
  parisc: Report software alignment faults via perf
  parisc: Report emulation faults via perf
  parisc: don't reference obsolete termio struct for TC* constants
  parisc: Remove spurious if statement from raw_copy_from_user()

3 files changed, 74 insertions, 5 deletions

diff --git a/arch/parisc/include/asm/perf_event.h b/arch/parisc/include/asm/perf_event.h
index 1e0fd8ba6c03..8a2925029d15 100644
--- a/arch/parisc/include/asm/perf_event.h
+++ b/arch/parisc/include/asm/perf_event.h
@@ -1,6 +1,12 @@
 #ifndef __ASM_PARISC_PERF_EVENT_H
 #define __ASM_PARISC_PERF_EVENT_H
 
-/* Empty, just to avoid compiling error */
+#include <asm/psw.h>
+
+#define perf_arch_fetch_caller_regs(regs, __ip) { \
+	(regs)->gr[0] = KERNEL_PSW; \
+	(regs)->iaoq[0] = (__ip); \
+	asm volatile("copy %%sp, %0\n":"=r"((regs)->gr[30])); \
+}
 
 #endif /* __ASM_PARISC_PERF_EVENT_H */
diff --git a/arch/parisc/include/uapi/asm/ioctls.h b/arch/parisc/include/uapi/asm/ioctls.h
index 82d1148c6379..74b4027a4e80 100644
--- a/arch/parisc/include/uapi/asm/ioctls.h
+++ b/arch/parisc/include/uapi/asm/ioctls.h
@@ -10,10 +10,10 @@
 #define TCSETS		_IOW('T', 17, struct termios) /* TCSETATTR */
 #define TCSETSW		_IOW('T', 18, struct termios) /* TCSETATTRD */
 #define TCSETSF		_IOW('T', 19, struct termios) /* TCSETATTRF */
-#define TCGETA		_IOR('T', 1, struct termio)
-#define TCSETA		_IOW('T', 2, struct termio)
-#define TCSETAW		_IOW('T', 3, struct termio)
-#define TCSETAF		_IOW('T', 4, struct termio)
+#define TCGETA          0x40125401
+#define TCSETA          0x80125402
+#define TCSETAW         0x80125403
+#define TCSETAF         0x80125404
 #define TCSBRK		_IO('T', 5)
 #define TCXONC		_IO('T', 6)
 #define TCFLSH		_IO('T', 7)
diff --git a/arch/parisc/include/uapi/asm/perf_regs.h b/arch/parisc/include/uapi/asm/perf_regs.h
new file mode 100644
index 000000000000..1ae687bb3d3c
--- /dev/null
+++ b/arch/parisc/include/uapi/asm/perf_regs.h
@@ -0,0 +1,63 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _UAPI_ASM_PARISC_PERF_REGS_H
+#define _UAPI_ASM_PARISC_PERF_REGS_H
+
+/* see struct user_regs_struct */
+enum perf_event_parisc_regs {
+	PERF_REG_PARISC_R0,	/* PSW is in gr[0] */
+	PERF_REG_PARISC_R1,
+	PERF_REG_PARISC_R2,
+	PERF_REG_PARISC_R3,
+	PERF_REG_PARISC_R4,
+	PERF_REG_PARISC_R5,
+	PERF_REG_PARISC_R6,
+	PERF_REG_PARISC_R7,
+	PERF_REG_PARISC_R8,
+	PERF_REG_PARISC_R9,
+	PERF_REG_PARISC_R10,
+	PERF_REG_PARISC_R11,
+	PERF_REG_PARISC_R12,
+	PERF_REG_PARISC_R13,
+	PERF_REG_PARISC_R14,
+	PERF_REG_PARISC_R15,
+	PERF_REG_PARISC_R16,
+	PERF_REG_PARISC_R17,
+	PERF_REG_PARISC_R18,
+	PERF_REG_PARISC_R19,
+	PERF_REG_PARISC_R20,
+	PERF_REG_PARISC_R21,
+	PERF_REG_PARISC_R22,
+	PERF_REG_PARISC_R23,
+	PERF_REG_PARISC_R24,
+	PERF_REG_PARISC_R25,
+	PERF_REG_PARISC_R26,
+	PERF_REG_PARISC_R27,
+	PERF_REG_PARISC_R28,
+	PERF_REG_PARISC_R29,
+	PERF_REG_PARISC_R30,
+	PERF_REG_PARISC_R31,
+
+	PERF_REG_PARISC_SR0,
+	PERF_REG_PARISC_SR1,
+	PERF_REG_PARISC_SR2,
+	PERF_REG_PARISC_SR3,
+	PERF_REG_PARISC_SR4,
+	PERF_REG_PARISC_SR5,
+	PERF_REG_PARISC_SR6,
+	PERF_REG_PARISC_SR7,
+
+	PERF_REG_PARISC_IAOQ0,
+	PERF_REG_PARISC_IAOQ1,
+	PERF_REG_PARISC_IASQ0,
+	PERF_REG_PARISC_IASQ1,
+
+	PERF_REG_PARISC_SAR,	/* CR11 */
+	PERF_REG_PARISC_IIR,	/* CR19 */
+	PERF_REG_PARISC_ISR,	/* CR20 */
+	PERF_REG_PARISC_IOR,	/* CR21 */
+	PERF_REG_PARISC_IPSW,	/* CR22 */
+
+	PERF_REG_PARISC_MAX
+};
+
+#endif /* _UAPI_ASM_PARISC_PERF_REGS_H */