Merge tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linuxgrafted

Pull I3C updates from Alexandre Belloni:
 "A new driver this cycle, for the AMD AXI I3C controller.

  There are also new features such as IBI wakeup support, SETAASA device
  discovery and ACPI support for the the DAA methods, meaning we can now
  communicate with the SPD devices on DDR5 modules.

  New driver:
   - AMD AXI I3C master controller

  Subsystem:
   - I3C Common Command Code (CCC) handling improvements, especially
     around GET CCCs
   - SETAASA device discovery support
   - ACPI support for all existing DAA methods like SETDASA, SETNEWDA as
     well as I2C devices on I3C bus
   - IBI-based wakeup support

  Drivers:
   - dw: SETAASA support
   - mipi-i3c-hci: advertise IBI wakeup capability, AMD_PT I3C
     controller support, PIO queue management support for HCI v1.2
   - renesas: improve suspend to RAM support, add runtime PM support"

* tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (70 commits)
  i3c: dw: reduce do_daa time if there's no client
  i3c: mipi-i3c-hci: Add support for AMD_PT I3C controller
  i3c: mipi-i3c-hci: Add PIO queue management support for HCI v1.2
  i3c: mipi-i3c-hci: Fix missing STAT_IBI_STATUS_THLD in PIO mode
  i3c: dw: rename "pclk" to "apb" to match dt-binding
  i3c: dw: make struct dw_i3c_cmd smaller
  i3c: dw: use COMMAND_PORT_TRANSFER_ARG instead of hardcoding
  i3c: renesas: Don't register devices when ENTDAA times out
  i3c: master: dw-i3c-master: fix OD timing for first broadcast
  i3c: mipi-i3c-hci: Advertise IBI wakeup capability
  i3c: mipi-i3c-hci: Factor out i3c_hci_sysdev()
  i3c: mipi-i3c-hci-pci: Propagate I3C wakeup requirements to PCI
  i3c: master: Reject IBI requests from non-IBI-capable devices
  i3c: master: Add helper to query bus wakeup requirements
  i3c: master: Report wakeup events for IBIs
  i3c: master: Support IBI-based wakeup capability
  i3c: master: Fix potential UAF in i3c_device_match()
  i3c: master: Fix potential UAF in i3c_device_uevent()
  i3c: Make dev->desc locking assumptions explicit
  i3c: master: Fix use-after-free of master->this
  ...

1 files changed, 205 insertions, 0 deletions

diff --git a/tools/include/nolibc/time.h b/tools/include/nolibc/time.h
new file mode 100644
index 000000000..9ba930710
--- /dev/null
+++ b/tools/include/nolibc/time.h
@@ -0,0 +1,205 @@
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+/*
+ * time function definitions for NOLIBC
+ * Copyright (C) 2017-2022 Willy Tarreau <w@1wt.eu>
+ */
+
+/* make sure to include all global symbols */
+#include "nolibc.h"
+
+#ifndef _NOLIBC_TIME_H
+#define _NOLIBC_TIME_H
+
+#include "std.h"
+#include "arch.h"
+#include "types.h"
+#include "sys.h"
+
+#include <linux/signal.h>
+#include <linux/time.h>
+
+#define __nolibc_assert_time64_type(t) \
+	__nolibc_static_assert(sizeof(t) == 8)
+
+#define __nolibc_assert_native_time64() \
+	__nolibc_assert_time64_type(__kernel_old_time_t)
+
+/*
+ * int clock_getres(clockid_t clockid, struct timespec *res);
+ * int clock_gettime(clockid_t clockid, struct timespec *tp);
+ * int clock_settime(clockid_t clockid, const struct timespec *tp);
+ * int clock_nanosleep(clockid_t clockid, int flags, const struct timespec *rqtp,
+ *                     struct timespec *rmtp)
+ */
+
+static __attribute__((unused))
+int _sys_clock_getres(clockid_t clockid, struct timespec *res)
+{
+#if defined(__NR_clock_getres_time64)
+	__nolibc_assert_time64_type(res->tv_sec);
+	return __nolibc_syscall2(__NR_clock_getres_time64, clockid, res);
+#else
+	__nolibc_assert_native_time64();
+	return __nolibc_syscall2(__NR_clock_getres, clockid, res);
+#endif
+}
+
+static __attribute__((unused))
+int clock_getres(clockid_t clockid, struct timespec *res)
+{
+	return __sysret(_sys_clock_getres(clockid, res));
+}
+
+static __attribute__((unused))
+int _sys_clock_gettime(clockid_t clockid, struct timespec *tp)
+{
+#if defined(__NR_clock_gettime64)
+	__nolibc_assert_time64_type(tp->tv_sec);
+	return __nolibc_syscall2(__NR_clock_gettime64, clockid, tp);
+#else
+	__nolibc_assert_native_time64();
+	return __nolibc_syscall2(__NR_clock_gettime, clockid, tp);
+#endif
+}
+
+static __attribute__((unused))
+int clock_gettime(clockid_t clockid, struct timespec *tp)
+{
+	return __sysret(_sys_clock_gettime(clockid, tp));
+}
+
+static __attribute__((unused))
+int _sys_clock_settime(clockid_t clockid, struct timespec *tp)
+{
+#if defined(__NR_clock_settime64)
+	__nolibc_assert_time64_type(tp->tv_sec);
+	return __nolibc_syscall2(__NR_clock_settime64, clockid, tp);
+#else
+	__nolibc_assert_native_time64();
+	return __nolibc_syscall2(__NR_clock_settime, clockid, tp);
+#endif
+}
+
+static __attribute__((unused))
+int clock_settime(clockid_t clockid, struct timespec *tp)
+{
+	return __sysret(_sys_clock_settime(clockid, tp));
+}
+
+static __attribute__((unused))
+int _sys_clock_nanosleep(clockid_t clockid, int flags, const struct timespec *rqtp,
+			 struct timespec *rmtp)
+{
+#if defined(__NR_clock_nanosleep_time64)
+	__nolibc_assert_time64_type(rqtp->tv_sec);
+	return __nolibc_syscall4(__NR_clock_nanosleep_time64, clockid, flags, rqtp, rmtp);
+#else
+	__nolibc_assert_native_time64();
+	return __nolibc_syscall4(__NR_clock_nanosleep, clockid, flags, rqtp, rmtp);
+#endif
+}
+
+static __attribute__((unused))
+int clock_nanosleep(clockid_t clockid, int flags, const struct timespec *rqtp,
+		    struct timespec *rmtp)
+{
+	/* Directly return a positive error number */
+	return -_sys_clock_nanosleep(clockid, flags, rqtp, rmtp);
+}
+
+static __inline__
+double difftime(time_t time1, time_t time2)
+{
+	return time1 - time2;
+}
+
+static __inline__
+int nanosleep(const struct timespec *rqtp, struct timespec *rmtp)
+{
+	return __sysret(_sys_clock_nanosleep(CLOCK_REALTIME, 0, rqtp, rmtp));
+}
+
+
+static __attribute__((unused))
+time_t time(time_t *tptr)
+{
+	struct timeval tv;
+
+	/* note, cannot fail here */
+	_sys_gettimeofday(&tv, NULL);
+
+	if (tptr)
+		*tptr = tv.tv_sec;
+	return tv.tv_sec;
+}
+
+
+/*
+ * int timer_create(clockid_t clockid, struct sigevent *evp, timer_t *timerid);
+ * int timer_gettime(timer_t timerid, struct itimerspec *curr_value);
+ * int timer_settime(timer_t timerid, int flags, const struct itimerspec *new_value, struct itimerspec *old_value);
+ */
+
+static __attribute__((unused))
+int _sys_timer_create(clockid_t clockid, struct sigevent *evp, timer_t *timerid)
+{
+	return __nolibc_syscall3(__NR_timer_create, clockid, evp, timerid);
+}
+
+static __attribute__((unused))
+int timer_create(clockid_t clockid, struct sigevent *evp, timer_t *timerid)
+{
+	return __sysret(_sys_timer_create(clockid, evp, timerid));
+}
+
+static __attribute__((unused))
+int _sys_timer_delete(timer_t timerid)
+{
+	return __nolibc_syscall1(__NR_timer_delete, timerid);
+}
+
+static __attribute__((unused))
+int timer_delete(timer_t timerid)
+{
+	return __sysret(_sys_timer_delete(timerid));
+}
+
+static __attribute__((unused))
+int _sys_timer_gettime(timer_t timerid, struct itimerspec *curr_value)
+{
+#if defined(__NR_timer_gettime64)
+	__nolibc_assert_time64_type(curr_value->it_value.tv_sec);
+	return __nolibc_syscall2(__NR_timer_gettime64, timerid, curr_value);
+#else
+	__nolibc_assert_native_time64();
+	return __nolibc_syscall2(__NR_timer_gettime, timerid, curr_value);
+#endif
+}
+
+static __attribute__((unused))
+int timer_gettime(timer_t timerid, struct itimerspec *curr_value)
+{
+	return __sysret(_sys_timer_gettime(timerid, curr_value));
+}
+
+static __attribute__((unused))
+int _sys_timer_settime(timer_t timerid, int flags,
+		       const struct itimerspec *new_value, struct itimerspec *old_value)
+{
+#if defined(__NR_timer_settime64)
+	__nolibc_assert_time64_type(new_value->it_value.tv_sec);
+	return __nolibc_syscall4(__NR_timer_settime64, timerid, flags, new_value, old_value);
+#else
+	__nolibc_assert_native_time64();
+	return __nolibc_syscall4(__NR_timer_settime, timerid, flags, new_value, old_value);
+#endif
+}
+
+static __attribute__((unused))
+int timer_settime(timer_t timerid, int flags,
+		  const struct itimerspec *new_value, struct itimerspec *old_value)
+{
+	return __sysret(_sys_timer_settime(timerid, flags, new_value, old_value));
+}
+
+#endif /* _NOLIBC_TIME_H */