Le 09/01/2020 à 13:59, Filip Bozuta a écrit :
> This patch implements functionalities of following ioctls:
>
> RTC_WKALM_SET, RTC_WKALM_GET - Getting/Setting wakeup alarm
>
> Some RTCs support a more powerful alarm interface, using these
> ioctls to read or write the RTC's alarm time (respectively)
> with this structure:
>
> struct rtc_wkalrm {
> unsigned char enabled;
> unsigned char pending;
> struct rtc_time time;
> };
>
> The enabled flag is used to enable or disable the alarm
> interrupt, or to read its current status; when using these
> calls, RTC_AIE_ON and RTC_AIE_OFF are not used. The pending
> flag is used by RTC_WKALM_RD to report a pending interrupt
> (so it's mostly useless on Linux, except when talking to the
> RTC managed by EFI firmware). The time field is as used with
> RTC_ALM_READ and RTC_ALM_SET except that the tm_mday, tm_mon,
> and tm_year fields are also valid. A pointer to this structure
> should be passed as the third ioctl's argument.
>
> Implementation notes:
>
> All ioctls in this patch have a pointer to a structure
> rtc_wkalrm as their third argument. That is the reason why
> corresponding definition is added in linux-user/syscall_types.h.
> Since all elements of this structure are either of type
> 'unsigned char' or 'struct rtc_time' (that was covered in one
> of previous patches), the rest of the implementation is
> straightforward.
>
> Signed-off-by: Filip Bozuta <filip.boz...@rt-rk.com>
> ---
> linux-user/ioctls.h | 2 ++
> linux-user/syscall_defs.h | 2 ++
> linux-user/syscall_types.h | 5 +++++
> 3 files changed, 9 insertions(+)
>
> diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h
> index accbdee..b09396e 100644
> --- a/linux-user/ioctls.h
> +++ b/linux-user/ioctls.h
> @@ -85,6 +85,8 @@
> IOCTL(RTC_IRQP_SET, IOC_W, TYPE_ULONG)
> IOCTL(RTC_EPOCH_READ, IOC_R, MK_PTR(TYPE_ULONG))
> IOCTL(RTC_EPOCH_SET, IOC_W, TYPE_ULONG)
> + IOCTL(RTC_WKALM_RD, IOC_R, MK_PTR(MK_STRUCT(STRUCT_rtc_wkalrm)))
> + IOCTL(RTC_WKALM_SET, IOC_W, MK_PTR(MK_STRUCT(STRUCT_rtc_wkalrm)))
>
> IOCTL(BLKROSET, IOC_W, MK_PTR(TYPE_INT))
> IOCTL(BLKROGET, IOC_R, MK_PTR(TYPE_INT))
> diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
> index bbfa935..37504a2 100644
> --- a/linux-user/syscall_defs.h
> +++ b/linux-user/syscall_defs.h
> @@ -780,6 +780,8 @@ struct target_pollfd {
> #define TARGET_RTC_IRQP_SET TARGET_IOW('p', 0x0c, abi_ulong)
> #define TARGET_RTC_EPOCH_READ TARGET_IOR('p', 0x0d, abi_ulong)
> #define TARGET_RTC_EPOCH_SET TARGET_IOW('p', 0x0e, abi_ulong)
> +#define TARGET_RTC_WKALM_RD TARGET_IOR('p', 0x10, struct rtc_wkalrm)
> +#define TARGET_RTC_WKALM_SET TARGET_IOW('p', 0x0f, struct rtc_wkalrm)
>
> #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_SH4) ||
> \
> defined(TARGET_XTENSA)
> diff --git a/linux-user/syscall_types.h b/linux-user/syscall_types.h
> index a35072a..820bc8e 100644
> --- a/linux-user/syscall_types.h
> +++ b/linux-user/syscall_types.h
> @@ -266,6 +266,11 @@ STRUCT(rtc_time,
> TYPE_INT, /* tm_yday */
> TYPE_INT) /* tm_isdst */
>
> +STRUCT(rtc_wkalrm,
> + TYPE_CHAR, /* enabled */
> + TYPE_CHAR, /* pending */
> + MK_STRUCT(STRUCT_rtc_time)) /* time */
> +
> STRUCT(blkpg_ioctl_arg,
> TYPE_INT, /* op */
> TYPE_INT, /* flags */
>
Reviewed-by: Laurent Vivier <laur...@vivier.eu>
