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[PULL 16/17] linux-user: Add support for getting/setting RTC PLL correct
From: |
Laurent Vivier |
Subject: |
[PULL 16/17] linux-user: Add support for getting/setting RTC PLL correction using ioctls |
Date: |
Thu, 23 Jan 2020 09:22:26 +0100 |
From: Filip Bozuta <address@hidden>
This patch implements functionalities of following ioctls:
RTC_PLL_GET - Getting PLL correction
Read the PLL correction for RTCs that support PLL. The PLL correction
is returned in the following structure:
struct rtc_pll_info {
int pll_ctrl; /* placeholder for fancier control */
int pll_value; /* get/set correction value */
int pll_max; /* max +ve (faster) adjustment value */
int pll_min; /* max -ve (slower) adjustment value */
int pll_posmult; /* factor for +ve correction */
int pll_negmult; /* factor for -ve correction */
long pll_clock; /* base PLL frequency */
};
A pointer to this structure should be passed as the third
ioctl's argument.
RTC_PLL_SET - Setting PLL correction
Sets the PLL correction for RTCs that support PLL. The PLL correction
that is set is specified by the rtc_pll_info structure pointed to by
the third ioctl's' argument.
Implementation notes:
All ioctls in this patch have a pointer to a structure rtc_pll_info
as their third argument. All elements of this structure are of
type 'int', except the last one that is of type 'long'. That is
the reason why a separate target structure (target_rtc_pll_info)
is defined in linux-user/syscall_defs. The rest of the
implementation is straightforward.
Reviewed-by: Laurent Vivier <address@hidden>
Signed-off-by: Filip Bozuta <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Laurent Vivier <address@hidden>
---
linux-user/ioctls.h | 2 ++
linux-user/syscall_defs.h | 14 ++++++++++++++
linux-user/syscall_types.h | 9 +++++++++
3 files changed, 25 insertions(+)
diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h
index e4c1fbf52b1b..789764d11314 100644
--- a/linux-user/ioctls.h
+++ b/linux-user/ioctls.h
@@ -87,6 +87,8 @@
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(RTC_PLL_GET, IOC_R, MK_PTR(MK_STRUCT(STRUCT_rtc_pll_info)))
+ IOCTL(RTC_PLL_SET, IOC_W, MK_PTR(MK_STRUCT(STRUCT_rtc_pll_info)))
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 c33432a374e5..9f7aad49c683 100644
--- a/linux-user/syscall_defs.h
+++ b/linux-user/syscall_defs.h
@@ -763,6 +763,16 @@ struct target_pollfd {
#define TARGET_KDSETLED 0x4B32 /* set led state [lights, not flags] */
#define TARGET_KDSIGACCEPT 0x4B4E
+struct target_rtc_pll_info {
+ int pll_ctrl;
+ int pll_value;
+ int pll_max;
+ int pll_min;
+ int pll_posmult;
+ int pll_negmult;
+ abi_long pll_clock;
+};
+
/* real time clock ioctls */
#define TARGET_RTC_AIE_ON TARGET_IO('p', 0x01)
#define TARGET_RTC_AIE_OFF TARGET_IO('p', 0x02)
@@ -782,6 +792,10 @@ struct target_pollfd {
#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)
+#define TARGET_RTC_PLL_GET TARGET_IOR('p', 0x11,
\
+ struct target_rtc_pll_info)
+#define TARGET_RTC_PLL_SET TARGET_IOW('p', 0x12,
\
+ struct target_rtc_pll_info)
#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 3efa9536ccfa..5ba4155047ba 100644
--- a/linux-user/syscall_types.h
+++ b/linux-user/syscall_types.h
@@ -271,6 +271,15 @@ STRUCT(rtc_wkalrm,
TYPE_CHAR, /* pending */
MK_STRUCT(STRUCT_rtc_time)) /* time */
+STRUCT(rtc_pll_info,
+ TYPE_INT, /* pll_ctrl */
+ TYPE_INT, /* pll_value */
+ TYPE_INT, /* pll_max */
+ TYPE_INT, /* pll_min */
+ TYPE_INT, /* pll_posmult */
+ TYPE_INT, /* pll_negmult */
+ TYPE_LONG) /* pll_clock */
+
STRUCT(blkpg_ioctl_arg,
TYPE_INT, /* op */
TYPE_INT, /* flags */
--
2.24.1
- [PULL 10/17] linux-user: Add support for KCOV_INIT_TRACE ioctl, (continued)
- [PULL 10/17] linux-user: Add support for KCOV_INIT_TRACE ioctl, Laurent Vivier, 2020/01/23
- [PULL 06/17] linux-user: Add support for FD<SETEMSGTRESH|SETMAXERRS|GETMAXERRS> ioctls, Laurent Vivier, 2020/01/23
- [PULL 07/17] linux-user: Add support for FDFMT<BEG|TRK|END> ioctls, Laurent Vivier, 2020/01/23
- [PULL 03/17] linux-user: Add support for FS_IOC_<GET|SET>VERSION ioctls, Laurent Vivier, 2020/01/23
- [PULL 02/17] linux-user: Reserve space for brk, Laurent Vivier, 2020/01/23
- [PULL 14/17] linux-user: Add support for getting/setting RTC periodic interrupt and epoch using ioctls, Laurent Vivier, 2020/01/23
- [PULL 17/17] linux-user: Add support for read/clear RTC voltage low detector using ioctls, Laurent Vivier, 2020/01/23
- [PULL 11/17] linux-user: Add support for TYPE_LONG and TYPE_ULONG in do_ioctl(), Laurent Vivier, 2020/01/23
- [PULL 15/17] linux-user: Add support for getting/setting RTC wakeup alarm using ioctls, Laurent Vivier, 2020/01/23
- [PULL 12/17] linux-user: Add support for enabling/disabling RTC features using ioctls, Laurent Vivier, 2020/01/23
- [PULL 16/17] linux-user: Add support for getting/setting RTC PLL correction using ioctls,
Laurent Vivier <=
- [PULL 13/17] linux-user: Add support for getting/setting RTC time and alarm using ioctls, Laurent Vivier, 2020/01/23
- Re: [PULL 00/17] Linux user for 5.0 patches, Peter Maydell, 2020/01/23