Skip to content
体验新版
项目
组织
正在加载...
登录
切换导航
打开侧边栏
berryhaxby
注释鸿蒙内核源码
提交
d011b438
注释鸿蒙内核源码
项目概览
berryhaxby
/
注释鸿蒙内核源码
与 Fork 源项目一致
Fork自
鸿蒙内核源码分析 / 注释鸿蒙内核源码
通知
1
Star
0
Fork
0
代码
文件
提交
分支
Tags
贡献者
分支图
Diff
Issue
0
列表
看板
标记
里程碑
合并请求
0
Wiki
0
Wiki
分析
仓库
DevOps
项目成员
Pages
注释鸿蒙内核源码
项目概览
项目概览
详情
发布
仓库
仓库
文件
提交
分支
标签
贡献者
分支图
比较
Issue
0
Issue
0
列表
看板
标记
里程碑
合并请求
0
合并请求
0
Pages
分析
分析
仓库分析
DevOps
Wiki
0
Wiki
成员
成员
收起侧边栏
关闭侧边栏
动态
分支图
创建新Issue
提交
Issue看板
体验新版 GitCode,发现更多精彩内容 >>
提交
d011b438
编写于
2月 23, 2021
作者:
鸿蒙内核源码分析
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
硬中断代码注释
百万汉字注解 + 百篇博客分析 -> 挖透鸿蒙内核源码
上级
a77332bb
变更
12
展开全部
隐藏空白更改
内联
并排
Showing
12 changed file
with
834 addition
and
834 deletion
+834
-834
arch/arm/arm/src/los_dispatch.S
arch/arm/arm/src/los_dispatch.S
+7
-7
arch/arm/arm/src/los_hwi.c
arch/arm/arm/src/los_hwi.c
+17
-17
arch/arm/include/los_hwi.h
arch/arm/include/los_hwi.h
+12
-12
kernel/base/core/los_process.c
kernel/base/core/los_process.c
+1
-1
kernel/base/core/los_tick.c
kernel/base/core/los_tick.c
+1
-1
kernel/base/ipc/los_futex.c
kernel/base/ipc/los_futex.c
+1
-1
kernel/extended/cpup/los_cpup.c
kernel/extended/cpup/los_cpup.c
+557
-557
platform/hw/arm/interrupt/gic/gic_v2.c
platform/hw/arm/interrupt/gic/gic_v2.c
+7
-7
platform/hw/arm/interrupt/gic/gic_v3.c
platform/hw/arm/interrupt/gic/gic_v3.c
+13
-13
platform/hw/include/gic_common.h
platform/hw/include/gic_common.h
+1
-1
platform/uart/dw-3.0.8a/uart.c
platform/uart/dw-3.0.8a/uart.c
+215
-215
zzz/git/push.sh
zzz/git/push.sh
+2
-2
未找到文件。
arch/arm/arm/src/los_dispatch.S
浏览文件 @
d011b438
...
...
@@ -254,30 +254,30 @@ OsKernelTaskLoad: @内核任务的加载
ADD
SP
,
SP
,
#
4
@
sp
=
SP
+
4
LDMFD
SP
!,
{
LR
,
PC
}^
@
返回地址赋给
pc
指针
OsIrqHandler
:
OsIrqHandler
:
@中断处理
SUB
LR
,
LR
,
#
4
/
*
push
r0
-
r3
to
irq
stack
*/
STMFD
SP
,
{
R0
-
R3
}
SUB
R0
,
SP
,
#(
4
*
4
)
MRS
R1
,
SPSR
MRS
R1
,
SPSR
@
获取程序状态控制寄存器
MOV
R2
,
LR
/
*
disable
irq
,
switch
to
svc
mode
*/
CPSID
i
,
#
0x13
CPSID
i
,
#
0x13
@
禁止中断
,
切换到
SVC
模式
/
*
push
spsr
and
pc
in
svc
stack
*/
STMFD
SP
!,
{
R1
,
R2
}
STMFD
SP
,
{
LR
}
AND
R3
,
R1
,
#
CPSR_MASK_MODE
CMP
R3
,
#
CPSR_USER_MODE
BNE
OsIrqFromKernel
AND
R3
,
R1
,
#
CPSR_MASK_MODE
CMP
R3
,
#
CPSR_USER_MODE
@
中断是否发生在用户模式
BNE
OsIrqFromKernel
@
中断不发生在用户模式下则跳转到
OsIrqFromKernel
/
*
push
user
sp
,
lr
in
svc
stack
*/
STMFD
SP
,
{
R13
,
R14
}^
OsIrqFromKernel
:
OsIrqFromKernel
:
@从内核发起中断
/
*
from
svc
not
need
save
sp
and
lr
*/
SUB
SP
,
SP
,
#(
2
*
4
)
...
...
arch/arm/arm/src/los_hwi.c
浏览文件 @
d011b438
...
...
@@ -161,7 +161,7 @@ VOID OsInterrupt(UINT32 intNum)//中断实际处理函数
*
intCnt
=
*
intCnt
+
1
;
#ifdef LOSCFG_CPUP_INCLUDE_IRQ //开启查询系统CPU的占用率的中断
OsCpupIrqStart
();
OsCpupIrqStart
();
//开始统计本次中断处理还是时间
#endif
#ifdef LOSCFG_KERNEL_TICKLESS
...
...
@@ -191,10 +191,10 @@ VOID OsInterrupt(UINT32 intNum)//中断实际处理函数
*
intCnt
=
*
intCnt
-
1
;
//@note_why 这里没看明白为什么要 -1
#ifdef LOSCFG_CPUP_INCLUDE_IRQ //开启查询系统CPU的占用率的中断
OsCpupIrqEnd
(
intNum
);
OsCpupIrqEnd
(
intNum
);
//结束统计本次中断处理还是时间
#endif
}
//
copy
硬中断参数
//
申请内核空间拷贝
硬中断参数
STATIC
HWI_ARG_T
OsHwiCpIrqParam
(
const
HwiIrqParam
*
irqParam
)
{
HwiIrqParam
*
paramByAlloc
=
NULL
;
...
...
@@ -236,7 +236,7 @@ STATIC UINT32 OsHwiCreateNoShared(HWI_HANDLE_T hwiNum, HWI_MODE_T hwiMode,
if
(
g_hwiForm
[
hwiNum
].
pfnHook
==
NULL
)
{
g_hwiForm
[
hwiNum
].
pfnHook
=
hwiHandler
;
//记录上回调函数
retParam
=
OsHwiCpIrqParam
(
irqParam
);
//
参数copy一份出来记录
retParam
=
OsHwiCpIrqParam
(
irqParam
);
//
获取中断处理函数的参数
if
(
retParam
==
LOS_NOK
)
{
HWI_UNLOCK
(
intSave
);
return
OS_ERRNO_HWI_NO_MEMORY
;
...
...
@@ -307,7 +307,7 @@ STATIC UINT32 OsHwiDelShared(HWI_HANDLE_T hwiNum, const HwiIrqParam *irqParam)
HWI_UNLOCK
(
intSave
);
return
LOS_OK
;
}
//创建一个共享硬件中断
//创建一个共享硬件中断
,共享中断就是一个中断能触发多个响应函数
STATIC
UINT32
OsHwiCreateShared
(
HWI_HANDLE_T
hwiNum
,
HWI_MODE_T
hwiMode
,
HWI_PROC_FUNC
hwiHandler
,
const
HwiIrqParam
*
irqParam
)
{
...
...
@@ -321,39 +321,39 @@ STATIC UINT32 OsHwiCreateShared(HWI_HANDLE_T hwiNum, HWI_MODE_T hwiMode,
return
OS_ERRNO_HWI_SHARED_ERROR
;
}
HWI_LOCK
(
intSave
);
HWI_LOCK
(
intSave
);
//中断自旋锁
hwiForm
=
&
g_hwiForm
[
hwiNum
];
hwiForm
=
&
g_hwiForm
[
hwiNum
];
//获取中断处理项
if
((
hwiForm
->
pstNext
!=
NULL
)
&&
((
modeResult
==
0
)
||
(
!
(
hwiForm
->
uwParam
&
IRQF_SHARED
))))
{
HWI_UNLOCK
(
intSave
);
return
OS_ERRNO_HWI_SHARED_ERROR
;
}
while
(
hwiForm
->
pstNext
!=
NULL
)
{
hwiForm
=
hwiForm
->
pstNext
;
hwiParam
=
(
HwiIrqParam
*
)(
hwiForm
->
uwParam
);
if
(
hwiParam
->
pDevId
==
irqParam
->
pDevId
)
{
while
(
hwiForm
->
pstNext
!=
NULL
)
{
//pstNext指向 共享中断的各处理函数节点,此处一直撸到最后一个
hwiForm
=
hwiForm
->
pstNext
;
//找下一个中断
hwiParam
=
(
HwiIrqParam
*
)(
hwiForm
->
uwParam
);
//获取中断参数,用于检测该设备ID是否已经有中断处理函数
if
(
hwiParam
->
pDevId
==
irqParam
->
pDevId
)
{
//设备ID一致时,说明设备对应的中断处理函数已经存在了.
HWI_UNLOCK
(
intSave
);
return
OS_ERRNO_HWI_ALREADY_CREATED
;
}
}
hwiFormNode
=
(
HwiHandleForm
*
)
LOS_MemAlloc
(
m_aucSysMem0
,
sizeof
(
HwiHandleForm
));
hwiFormNode
=
(
HwiHandleForm
*
)
LOS_MemAlloc
(
m_aucSysMem0
,
sizeof
(
HwiHandleForm
));
//创建一个中断处理节点
if
(
hwiFormNode
==
NULL
)
{
HWI_UNLOCK
(
intSave
);
return
OS_ERRNO_HWI_NO_MEMORY
;
}
hwiFormNode
->
uwParam
=
OsHwiCpIrqParam
(
irqParam
);
hwiFormNode
->
uwParam
=
OsHwiCpIrqParam
(
irqParam
);
//获取中断处理函数的参数
if
(
hwiFormNode
->
uwParam
==
LOS_NOK
)
{
HWI_UNLOCK
(
intSave
);
(
VOID
)
LOS_MemFree
(
m_aucSysMem0
,
hwiFormNode
);
return
OS_ERRNO_HWI_NO_MEMORY
;
}
hwiFormNode
->
pfnHook
=
hwiHandler
;
hwiFormNode
->
pstNext
=
(
struct
tagHwiHandleForm
*
)
NULL
;
hwiForm
->
pstNext
=
hwiFormNode
;
hwiFormNode
->
pfnHook
=
hwiHandler
;
//绑定中断处理函数
hwiFormNode
->
pstNext
=
(
struct
tagHwiHandleForm
*
)
NULL
;
//指定下一个中断为NULL,用于后续遍历找到最后一个中断项(见于以上 while (hwiForm->pstNext != NULL)处)
hwiForm
->
pstNext
=
hwiFormNode
;
//共享中断
if
((
irqParam
!=
NULL
)
&&
(
irqParam
->
pName
!=
NULL
))
{
g_hwiFormName
[
hwiNum
]
=
(
CHAR
*
)
irqParam
->
pName
;
...
...
@@ -373,7 +373,7 @@ LITE_OS_SEC_TEXT_INIT VOID OsHwiInit(VOID)//硬件中断初始化
{
UINT32
hwiNum
;
for
(
hwiNum
=
0
;
hwiNum
<
OS_HWI_MAX_NUM
;
hwiNum
++
)
{
for
(
hwiNum
=
0
;
hwiNum
<
OS_HWI_MAX_NUM
;
hwiNum
++
)
{
//初始化中断向量表,默认128个中断
g_hwiForm
[
hwiNum
].
pfnHook
=
NULL
;
g_hwiForm
[
hwiNum
].
uwParam
=
0
;
g_hwiForm
[
hwiNum
].
pstNext
=
NULL
;
...
...
arch/arm/include/los_hwi.h
浏览文件 @
d011b438
...
...
@@ -105,7 +105,7 @@ extern size_t g_intCount[];
* Value: 0x02000901
*
* Solution: Pass in a valid non-null hardware interrupt handling function.
*/
*/
//创建中断时,传入的中断处理程序指针为空
#define OS_ERRNO_HWI_PROC_FUNC_NULL LOS_ERRNO_OS_ERROR(LOS_MOD_HWI, 0x01)
/**
...
...
@@ -115,7 +115,7 @@ extern size_t g_intCount[];
* Value: 0x02000902
*
* Solution: Increase the configured maximum number of supported hardware interrupts.
*/
*/
//无可用中断资源
#define OS_ERRNO_HWI_CB_UNAVAILABLE LOS_ERRNO_OS_ERROR(LOS_MOD_HWI, 0x02)
/**
...
...
@@ -125,7 +125,7 @@ extern size_t g_intCount[];
* Value: 0x02000903
*
* Solution: Expand the configured memory.
*/
*/
//创建中断时,出现内存不足的情况
#define OS_ERRNO_HWI_NO_MEMORY LOS_ERRNO_OS_ERROR(LOS_MOD_HWI, 0x03)
/**
...
...
@@ -135,7 +135,7 @@ extern size_t g_intCount[];
* Value: 0x02000904
*
* Solution: Check whether the interrupt specified by the passed-in interrupt number has already been created.
*/
*/
//创建中断时,发现要注册的中断号已经创建
#define OS_ERRNO_HWI_ALREADY_CREATED LOS_ERRNO_OS_ERROR(LOS_MOD_HWI, 0x04)
/**
...
...
@@ -145,7 +145,7 @@ extern size_t g_intCount[];
* Value: 0x02000905
*
* Solution: Ensure that the interrupt priority is valid.
*/
*/
//创建中断时,传入的中断优先级无效
#define OS_ERRNO_HWI_PRIO_INVALID LOS_ERRNO_OS_ERROR(LOS_MOD_HWI, 0x05)
/**
...
...
@@ -156,7 +156,7 @@ extern size_t g_intCount[];
*
* Solution: The interrupt creation mode can be only set to OS_HWI_MODE_COMM or OS_HWI_MODE_FAST of
* which the value can be 0 or 1.
*/
*/
//中断模式无效
#define OS_ERRNO_HWI_MODE_INVALID LOS_ERRNO_OS_ERROR(LOS_MOD_HWI, 0x06)
/**
...
...
@@ -166,7 +166,7 @@ extern size_t g_intCount[];
* Value: 0x02000907
*
* Solution: Check whether the interrupt specified by the passed-in interrupt number has already been created.
*/
*/
//创建硬中断时,发现要注册的中断号,已经创建为快速中断
#define OS_ERRNO_HWI_FASTMODE_ALREADY_CREATED LOS_ERRNO_OS_ERROR(LOS_MOD_HWI, 0x07)
/**
...
...
@@ -176,7 +176,7 @@ extern size_t g_intCount[];
* Value: 0x02000908
*
* * Solution: Do not call the API during an interrupt.
*/
*/
//接口在中断中调用
#define OS_ERRNO_HWI_INTERR LOS_ERRNO_OS_ERROR(LOS_MOD_HWI, 0x08)
/**
...
...
@@ -187,7 +187,7 @@ extern size_t g_intCount[];
*
* * Solution: Check the input params hwiMode and irqParam of LOS_HwiCreate or
* LOS_HwiDelete whether adapt the current hwi.
*/
*/
//中断共享出现错误
#define OS_ERRNO_HWI_SHARED_ERROR LOS_ERRNO_OS_ERROR(LOS_MOD_HWI, 0x09)
/**
...
...
@@ -197,7 +197,7 @@ extern size_t g_intCount[];
* Value: 0x0200090a
*
* * Solution: Check the interrupt Arg, Arg should not be NULL and pDevId should not be NULL.
*/
*/
//注册中断入参有误
#define OS_ERRNO_HWI_ARG_INVALID LOS_ERRNO_OS_ERROR(LOS_MOD_HWI, 0x0a)
/**
...
...
@@ -207,7 +207,7 @@ extern size_t g_intCount[];
* Value: 0x0200090b
*
* * Solution: Check the hwi number or devid, make sure the hwi number or devid need to delete.
*/
*/
//中断共享情况下,删除中断时,中断号对应的链表中,无法匹配到相应的设备ID
#define OS_ERRNO_HWI_HWINUM_UNCREATE LOS_ERRNO_OS_ERROR(LOS_MOD_HWI, 0x0b)
/**
...
...
@@ -252,7 +252,7 @@ typedef VOID (*HWI_PROC_FUNC)(VOID);
typedef
struct
tagHwiHandleForm
{
HWI_PROC_FUNC
pfnHook
;
//中断处理函数
HWI_ARG_T
uwParam
;
//中断处理函数参数
struct
tagHwiHandleForm
*
pstNext
;
//节点,指向下一个中断
struct
tagHwiHandleForm
*
pstNext
;
//节点,指向下一个中断
,用于共享中断的情况
}
HwiHandleForm
;
typedef
struct
tagIrqParam
{
//中断参数
...
...
kernel/base/core/los_process.c
浏览文件 @
d011b438
...
...
@@ -878,7 +878,7 @@ STATIC UINT32 OsProcessCreateInit(LosProcessCB *processCB, UINT32 flags, const C
#endif
#ifdef LOSCFG_KERNEL_CPUP //CPU性能统计开关,默认是打开的
OsCpupSet
(
processCB
->
processID
);
OsCpupSet
(
processCB
->
processID
);
//初始化进程性能统计
#endif
return
LOS_OK
;
...
...
kernel/base/core/los_tick.c
浏览文件 @
d011b438
...
...
@@ -61,7 +61,7 @@ LITE_OS_SEC_TEXT VOID OsTickHandler(VOID)
{
UINT32
intSave
;
TICK_LOCK
(
intSave
);
TICK_LOCK
(
intSave
);
//tick自旋锁
g_tickCount
[
ArchCurrCpuid
()]
++
;
// 累加当前CPU核tick数
TICK_UNLOCK
(
intSave
);
...
...
kernel/base/ipc/los_futex.c
浏览文件 @
d011b438
...
...
@@ -43,7 +43,7 @@
extern
"C"
{
#endif
#endif
/* __cplusplus */
// Futex 是Fast Userspace muTexes的缩写 就是快速用户空间互斥体 ,注解简称它
会
快锁
// Futex 是Fast Userspace muTexes的缩写 就是快速用户空间互斥体 ,注解简称它
为
快锁
#define OS_FUTEX_FROM_FUTEXLIST(ptr) LOS_DL_LIST_ENTRY(ptr, FutexNode, futexList) //从 futexList 位置拿节点FutexNode
#define OS_FUTEX_FROM_QUEUELIST(ptr) LOS_DL_LIST_ENTRY(ptr, FutexNode, queueList) //从 queueList 位置拿节点FutexNode//
#define OS_FUTEX_KEY_BASE USER_ASPACE_BASE
...
...
kernel/extended/cpup/los_cpup.c
浏览文件 @
d011b438
此差异已折叠。
点击以展开。
platform/hw/arm/interrupt/gic/gic_v2.c
浏览文件 @
d011b438
...
...
@@ -37,7 +37,7 @@ STATIC_ASSERT(OS_USER_HWI_MAX <= 1020, "hwi max is too large!");
#ifdef LOSCFG_PLATFORM_BSP_GIC_V2
STATIC
UINT32
g_curIrqNum
=
0
;
STATIC
UINT32
g_curIrqNum
=
0
;
//记录当前中断号
#if (LOSCFG_KERNEL_SMP == YES)
/*
...
...
@@ -53,12 +53,12 @@ STATIC VOID GicWriteSgi(UINT32 vector, UINT32 cpuMask, UINT32 filter)
GIC_REG_32
(
GICD_SGIR
)
=
val
;
}
//向指定核发送核间中断
VOID
HalIrqSendIpi
(
UINT32
target
,
UINT32
ipi
)
{
GicWriteSgi
(
ipi
,
target
,
0
);
}
//设置中断的亲和性,即设置中断在固定核响应(该函数仅在SMP模式下支持)
VOID
HalIrqSetAffinity
(
UINT32
vector
,
UINT32
cpuMask
)
{
UINT32
offset
=
vector
/
4
;
...
...
@@ -67,7 +67,7 @@ VOID HalIrqSetAffinity(UINT32 vector, UINT32 cpuMask)
GIC_REG_8
(
GICD_ITARGETSR
(
offset
)
+
index
)
=
cpuMask
;
}
#endif
//获取当前中断号
UINT32
HalCurIrqGet
(
VOID
)
{
return
g_curIrqNum
;
...
...
@@ -90,7 +90,7 @@ VOID HalIrqUnmask(UINT32 vector)
GIC_REG_32
(
GICD_ISENABLER
(
vector
>>
5
))
=
1U
<<
(
vector
%
32
);
}
//挂起中断
VOID
HalIrqPending
(
UINT32
vector
)
{
if
((
vector
>
OS_USER_HWI_MAX
)
||
(
vector
<
OS_USER_HWI_MIN
))
{
...
...
@@ -155,7 +155,7 @@ VOID HalIrqInit(VOID)
VOID
HalIrqHandler
(
VOID
)
{
UINT32
iar
=
GIC_REG_32
(
GICC_IAR
);
UINT32
vector
=
iar
&
0x3FFU
;
UINT32
vector
=
iar
&
0x3FFU
;
//计算中断向量号
/*
* invalid irq number, mainly the spurious interrupts 0x3ff,
...
...
@@ -167,7 +167,7 @@ VOID HalIrqHandler(VOID)
}
g_curIrqNum
=
vector
;
OsInterrupt
(
vector
);
OsInterrupt
(
vector
);
//调用上层中断处理函数
/* use orignal iar to do the EOI */
GIC_REG_32
(
GICC_EOIR
)
=
iar
;
...
...
platform/hw/arm/interrupt/gic/gic_v3.c
浏览文件 @
d011b438
...
...
@@ -78,7 +78,7 @@ GICv3控制器由以下部分组成:
#ifdef LOSCFG_PLATFORM_BSP_GIC_V3
STATIC
UINT32
g_curIrqNum
=
0
;
STATIC
UINT32
g_curIrqNum
=
0
;
//记录当前中断号
STATIC
INLINE
UINT64
MpidrToAffinity
(
UINT64
mpidr
)
{
...
...
@@ -363,10 +363,10 @@ UINT32 HalIrqSetPrio(UINT32 vector, UINT8 priority)
VOID
HalIrqInitPercpu
(
VOID
)
{
INT32
idx
;
UINT32
cpu
=
ArchCurrCpuid
();
UINT32
cpu
=
ArchCurrCpuid
();
//获取当前CPU
/* GICR init */
GicrSetWaker
(
cpu
);
GicrSetWaker
(
cpu
);
//设置CPU为唤醒状态
GicrSetGroup
(
cpu
);
GicWaitForRwp
(
GICR_CTLR
(
cpu
));
...
...
@@ -387,8 +387,8 @@ VOID HalIrqInitPercpu(VOID)
#ifdef LOSCFG_KERNEL_SMP
/* unmask ipi interrupts */
HalIrqUnmask
(
LOS_MP_IPI_WAKEUP
);
HalIrqUnmask
(
LOS_MP_IPI_HALT
);
HalIrqUnmask
(
LOS_MP_IPI_WAKEUP
);
//恢复CPU唤醒信号
HalIrqUnmask
(
LOS_MP_IPI_HALT
);
//恢复CPU停止信号
#endif
}
//硬中断初始化
...
...
@@ -404,16 +404,16 @@ VOID HalIrqInit(VOID)
/* set externel interrupts to be level triggered, active low. */
for
(
i
=
32
;
i
<
OS_HWI_MAX_NUM
;
i
+=
16
)
{
//将外部中断设置为电平触发,低电平有效
GIC_REG_32
(
GICD_ICFGR
(
i
/
16
))
=
0
;
GIC_REG_32
(
GICD_ICFGR
(
i
/
16
))
=
0
;
//设置16个私有外设中断
}
//SPI是串行外设接口(Serial Peripheral Interface)的缩写
/* config distributer, mask and clear all spis, set group x */
for
(
i
=
32
;
i
<
OS_HWI_MAX_NUM
;
i
+=
32
)
{
GIC_REG_32
(
GICD_ICENABLER
(
i
/
32
))
=
0xffffffff
;
GIC_REG_32
(
GICD_ICPENDR
(
i
/
32
))
=
0xffffffff
;
GIC_REG_32
(
GICD_IGRPMODR
(
i
/
32
))
=
0
;
for
(
i
=
32
;
i
<
OS_HWI_MAX_NUM
;
i
+=
32
)
{
//配置分配器,屏蔽并清除所有SPI,设置组
GIC_REG_32
(
GICD_ICENABLER
(
i
/
32
))
=
0xffffffff
;
//屏蔽中断使能寄存器
GIC_REG_32
(
GICD_ICPENDR
(
i
/
32
))
=
0xffffffff
;
////屏蔽中断挂起寄存器
GIC_REG_32
(
GICD_IGRPMODR
(
i
/
32
))
=
0
;
//清除中断组模式寄存器
GicdSetGroup
(
i
);
GicdSetGroup
(
i
);
//设置中断组
}
/* set spi priority as default */
...
...
@@ -424,7 +424,7 @@ VOID HalIrqInit(VOID)
GicWaitForRwp
(
GICD_CTLR
);
/* disable all interrupts. */
for
(
i
=
0
;
i
<
OS_HWI_MAX_NUM
;
i
+=
32
)
{
for
(
i
=
0
;
i
<
OS_HWI_MAX_NUM
;
i
+=
32
)
{
//让所有中断失效
GIC_REG_32
(
GICD_ICENABLER
(
i
/
32
))
=
0xffffffff
;
}
...
...
platform/hw/include/gic_common.h
浏览文件 @
d011b438
...
...
@@ -128,7 +128,7 @@ enum {
/*
* The preemption level is up to 128, and the maximum value corresponding to the interrupt priority is 254 [7:1].
* If the GIC_MAX_INTERRUPT_PREEMPTION_LEVEL is 0, the minimum priority is 0xff.
*/
*/
//中断优先级 最高中断优先级为 0 ,最低优先级为 255
#define MIN_INTERRUPT_PRIORITY ((UINT8)((GIC_MAX_INTERRUPT_PREEMPTION_LEVEL - 1) << PRIORITY_SHIFT))
#endif
platform/uart/dw-3.0.8a/uart.c
浏览文件 @
d011b438
/*
* Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
* Copyright (c) 2020, Huawei Device Co., Ltd. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "los_event.h"
#include "hisoc/uart.h"
EVENT_CB_S
g_uartEvent
;
#ifdef LOSCFG_PLATFORM_UART_WITHOUT_VFS
#ifdef LOSCFG_SHELL
#define UART_BUF 128
static
UINT8
g_uart_buf
[
UART_BUF
];
extern
void
shellCmdLineParse
(
CHAR
c
,
pf_OUTPUT
pf_put
);
#endif
#endif
UINT8
uart_getc
(
void
)
{
UINT8
ch
=
0
;
while
(
!
(
GET_UINT32
(
UART_REG_BASE
+
UART_USR
)
&
0x08
))
{
/*lint !e40*/
LOS_Msleep
(
100
);
}
/* receive one char */
READ_UINT8
(
ch
,
UART_REG_BASE
+
UART_DR
);
return
ch
;
}
#if defined(LOSCFG_COREDUMP) || defined(LOSCFG_LLTSER)
UINT8
uart_getc_interrupt
(
void
)
{
UINT8
ch
=
0
;
while
(
!
(
GET_UINT32
(
UART_REG_BASE
+
UART_USR
)
&
0x08
))
{
/*lint !e40*/
}
/* receive one char */
READ_UINT8
(
ch
,
UART_REG_BASE
+
UART_DR
);
return
ch
;
}
#endif
/* send */
char
uart_putc
(
char
c
)
{
/* Wait until THRE is empyt */
while
(
!
(
GET_UINT32
(
UART_REG_BASE
+
UART_USR
)
&
0x02
));
/*lint !e40*/
/* send one char */
WRITE_UINT8
(
c
,
UART_REG_BASE
+
UART_DR
);
return
c
;
}
unsigned
int
g_uart_fputc_en
__attribute__
((
section
(
".data"
)))
=
1
;
char
uart_fputc
(
char
c
,
void
*
f
)
{
if
(
g_uart_fputc_en
==
1
)
{
if
(
c
==
'\n'
)
{
uart_putc
(
'\r'
);
/*lint !e534*/
}
return
(
uart_putc
(
c
));
}
else
{
return
0
;
}
}
#ifdef LOSCFG_PLATFORM_UART_WITHOUT_VFS
#ifdef LOSCFG_SHELL
static
void
uart_notice_adapt
(
void
)
{
LOS_EventWrite
(
&
g_uartEvent
,
0x112
);
}
void
uart_get_raw
(
void
)
{
UINT8
ch
;
static
int
cnt_ii
=
0
;
if
(
cnt_ii
==
0
)
{
(
VOID
)
memset_s
(
g_uart_buf
,
UART_BUF
,
0
,
UART_BUF
);
}
ch
=
uart_getc
();
g_uart_buf
[
cnt_ii
]
=
ch
;
cnt_ii
++
;
switch
(
cnt_ii
)
{
case
1
:
// only one char
if
(
ch
!=
27
)
{
// un special
uart_notice_adapt
();
cnt_ii
=
0
;
}
break
;
case
2
:
if
(
ch
!=
91
)
{
uart_notice_adapt
();
cnt_ii
=
0
;
}
break
;
case
3
:
switch
(
ch
)
{
default:
case
'A'
:
case
'B'
:
case
'C'
:
case
'D'
:
{
uart_notice_adapt
();
cnt_ii
=
0
;
}
break
;
case
51
:
case
49
:
case
52
:
break
;
}
break
;
case
4
:
{
uart_notice_adapt
();
cnt_ii
=
0
;
}
break
;
default:
{
uart_notice_adapt
();
cnt_ii
=
0
;
}
break
;
}
}
extern
void
dprintf
(
const
char
*
fmt
,
...);
static
void
uart_irqhandle
(
void
)
{
UINT8
ch
;
shellCmdLineParse
(
0
,
dprintf
);
}
int
uart_hwiCreate
(
void
)
{
UINT32
uwRet
=
0
;
if
(
uwRet
!=
LOS_HwiCreate
(
NUM_HAL_INTERRUPT_UART
,
0xa0
,
0
,
uart_irqhandle
,
0
))
{
return
uwRet
;
}
uart_interrupt_unmask
();
return
0
;
}
#endif
#endif
void
uart_init
()
{
unsigned
int
temp
;
unsigned
int
divider
;
unsigned
char
dividerH
,
dividerL
;
/* disable UART1 FIFO */
WRITE_UINT32
(
0
,
UART_REG_BASE
+
UART_FCR
);
/*lint !e40*/
/* reset and enable UART1 FIFO */
WRITE_UINT32
(
0x7
,
UART_REG_BASE
+
UART_FCR
);
/*lint !e40*/
/* disable UART1 interrupt */
WRITE_UINT32
(
0
,
UART_REG_BASE
+
UART_IER
);
/*lint !e40*/
/* enable DLL and DLH */
WRITE_UINT32
(
0x80
,
UART_REG_BASE
+
UART_LCR
);
/*lint !e40*/
/* Caculate devide */
temp
=
16
*
CONSOLE_UART_BAUDRATE
;
divider
=
CONFIG_UART_CLK_INPUT
/
temp
;
dividerH
=
((
divider
)
&
0xff00
)
>>
8
;
dividerL
=
((
divider
)
&
0x00ff
);
/* configure DLL and DLH */
WRITE_UINT32
(
dividerL
,
UART_REG_BASE
+
UART_DLL
);
/*lint !e40*/
WRITE_UINT32
(
dividerH
,
UART_REG_BASE
+
UART_DLH
);
/*lint !e40*/
/* disable DLL and DLH */
WRITE_UINT32
(
0x0
,
UART_REG_BASE
+
UART_LCR
);
/*lint !e40*/
/* 8bit data, 1bit stop,even parity */
WRITE_UINT32
(
0x1b
,
UART_REG_BASE
+
UART_LCR
);
/*lint !e40*/
/* enable UART1 */
WRITE_UINT32
(
0x1
,
UART_REG_BASE
+
UART_IER
);
/*lint !e40*/
(
VOID
)
LOS_EventInit
(
&
g_uartEvent
);
}
void
uart_interrupt_unmask
(
void
)
{
HalIrqUnmask
(
NUM_HAL_INTERRUPT_UART
);
}
/*
* Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
* Copyright (c) 2020, Huawei Device Co., Ltd. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "los_event.h"
#include "hisoc/uart.h"
EVENT_CB_S
g_uartEvent
;
#ifdef LOSCFG_PLATFORM_UART_WITHOUT_VFS
#ifdef LOSCFG_SHELL
#define UART_BUF 128
static
UINT8
g_uart_buf
[
UART_BUF
];
extern
void
shellCmdLineParse
(
CHAR
c
,
pf_OUTPUT
pf_put
);
#endif
#endif
UINT8
uart_getc
(
void
)
{
UINT8
ch
=
0
;
while
(
!
(
GET_UINT32
(
UART_REG_BASE
+
UART_USR
)
&
0x08
))
{
/*lint !e40*/
LOS_Msleep
(
100
);
}
/* receive one char */
READ_UINT8
(
ch
,
UART_REG_BASE
+
UART_DR
);
return
ch
;
}
#if defined(LOSCFG_COREDUMP) || defined(LOSCFG_LLTSER)
UINT8
uart_getc_interrupt
(
void
)
{
UINT8
ch
=
0
;
while
(
!
(
GET_UINT32
(
UART_REG_BASE
+
UART_USR
)
&
0x08
))
{
/*lint !e40*/
}
/* receive one char */
READ_UINT8
(
ch
,
UART_REG_BASE
+
UART_DR
);
return
ch
;
}
#endif
/* send */
char
uart_putc
(
char
c
)
{
/* Wait until THRE is empyt */
while
(
!
(
GET_UINT32
(
UART_REG_BASE
+
UART_USR
)
&
0x02
));
/*lint !e40*/
/* send one char */
WRITE_UINT8
(
c
,
UART_REG_BASE
+
UART_DR
);
return
c
;
}
unsigned
int
g_uart_fputc_en
__attribute__
((
section
(
".data"
)))
=
1
;
char
uart_fputc
(
char
c
,
void
*
f
)
{
if
(
g_uart_fputc_en
==
1
)
{
if
(
c
==
'\n'
)
{
uart_putc
(
'\r'
);
/*lint !e534*/
}
return
(
uart_putc
(
c
));
}
else
{
return
0
;
}
}
#ifdef LOSCFG_PLATFORM_UART_WITHOUT_VFS
#ifdef LOSCFG_SHELL
static
void
uart_notice_adapt
(
void
)
{
LOS_EventWrite
(
&
g_uartEvent
,
0x112
);
}
void
uart_get_raw
(
void
)
{
UINT8
ch
;
static
int
cnt_ii
=
0
;
if
(
cnt_ii
==
0
)
{
(
VOID
)
memset_s
(
g_uart_buf
,
UART_BUF
,
0
,
UART_BUF
);
}
ch
=
uart_getc
();
g_uart_buf
[
cnt_ii
]
=
ch
;
cnt_ii
++
;
switch
(
cnt_ii
)
{
case
1
:
// only one char
if
(
ch
!=
27
)
{
// un special
uart_notice_adapt
();
cnt_ii
=
0
;
}
break
;
case
2
:
if
(
ch
!=
91
)
{
uart_notice_adapt
();
cnt_ii
=
0
;
}
break
;
case
3
:
switch
(
ch
)
{
default:
case
'A'
:
case
'B'
:
case
'C'
:
case
'D'
:
{
uart_notice_adapt
();
cnt_ii
=
0
;
}
break
;
case
51
:
case
49
:
case
52
:
break
;
}
break
;
case
4
:
{
uart_notice_adapt
();
cnt_ii
=
0
;
}
break
;
default:
{
uart_notice_adapt
();
cnt_ii
=
0
;
}
break
;
}
}
extern
void
dprintf
(
const
char
*
fmt
,
...);
//串口硬中断处理函数
static
void
uart_irqhandle
(
void
)
{
UINT8
ch
;
shellCmdLineParse
(
0
,
dprintf
);
//shell解析输入的内容
}
//创建串口硬中断
int
uart_hwiCreate
(
void
)
{
UINT32
uwRet
=
0
;
if
(
uwRet
!=
LOS_HwiCreate
(
NUM_HAL_INTERRUPT_UART
,
0xa0
,
0
,
uart_irqhandle
,
0
))
{
return
uwRet
;
}
uart_interrupt_unmask
();
//取消中断屏蔽
return
0
;
}
#endif
#endif
void
uart_init
()
{
unsigned
int
temp
;
unsigned
int
divider
;
unsigned
char
dividerH
,
dividerL
;
/* disable UART1 FIFO */
WRITE_UINT32
(
0
,
UART_REG_BASE
+
UART_FCR
);
/*lint !e40*/
/* reset and enable UART1 FIFO */
WRITE_UINT32
(
0x7
,
UART_REG_BASE
+
UART_FCR
);
/*lint !e40*/
/* disable UART1 interrupt */
WRITE_UINT32
(
0
,
UART_REG_BASE
+
UART_IER
);
/*lint !e40*/
/* enable DLL and DLH */
WRITE_UINT32
(
0x80
,
UART_REG_BASE
+
UART_LCR
);
/*lint !e40*/
/* Caculate devide */
temp
=
16
*
CONSOLE_UART_BAUDRATE
;
divider
=
CONFIG_UART_CLK_INPUT
/
temp
;
dividerH
=
((
divider
)
&
0xff00
)
>>
8
;
dividerL
=
((
divider
)
&
0x00ff
);
/* configure DLL and DLH */
WRITE_UINT32
(
dividerL
,
UART_REG_BASE
+
UART_DLL
);
/*lint !e40*/
WRITE_UINT32
(
dividerH
,
UART_REG_BASE
+
UART_DLH
);
/*lint !e40*/
/* disable DLL and DLH */
WRITE_UINT32
(
0x0
,
UART_REG_BASE
+
UART_LCR
);
/*lint !e40*/
/* 8bit data, 1bit stop,even parity */
WRITE_UINT32
(
0x1b
,
UART_REG_BASE
+
UART_LCR
);
/*lint !e40*/
/* enable UART1 */
WRITE_UINT32
(
0x1
,
UART_REG_BASE
+
UART_IER
);
/*lint !e40*/
(
VOID
)
LOS_EventInit
(
&
g_uartEvent
);
//初始化串口事件
}
//取消串口中断屏蔽
void
uart_interrupt_unmask
(
void
)
{
HalIrqUnmask
(
NUM_HAL_INTERRUPT_UART
);
//参考见于 harmony\vendor\hisi\hi35xx\hi3516dv300\config\board\include\hisoc\uart.h
}
zzz/git/push.sh
浏览文件 @
d011b438
git add
-A
git commit
-m
'
鸿蒙内核源码分析(原子操作篇) | 是哪两条汇编指令在为原子操作保驾护航 ?
百万汉字注解 + 百篇博客分析 ->
读
透鸿蒙内核源码
git commit
-m
'
硬中断代码注释
百万汉字注解 + 百篇博客分析 ->
挖
透鸿蒙内核源码
'
git push origin master
...
...
编辑
预览
Markdown
is supported
0%
请重试
或
添加新附件
.
添加附件
取消
You are about to add
0
people
to the discussion. Proceed with caution.
先完成此消息的编辑!
取消
想要评论请
注册
或
登录