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 */
--
2.7.4
