Added sandbox alarms API.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@15634 27425a3e-05d8-49a3-a47f-9c15f0e5edd8

demos/STM32/RT-STM32G474RE-NUCLEO64-SB_HOST_DYNAMIC/cfg/sbconf.h

@@ -45,6 +45,13 @@
 #define SB_CFG_ENABLE_VRQ                   TRUE
 #endif
 
+/**
+ * @brief   Virtual IRQ to be used for alarm.
+ */
+#if !defined(SB_CFG_ALARM_VRQ) || defined(__DOXYGEN__)
+#define SB_CFG_ALARM_VRQ                    0
+#endif
+
 /**
  * @brief   Enables Posix API in sandboxes using VFS.
  */

demos/STM32/RT-STM32G474RE-NUCLEO64-SB_HOST_STATIC/cfg/sbconf.h

@@ -45,6 +45,13 @@
 #define SB_CFG_ENABLE_VRQ                   TRUE
 #endif
 
+/**
+ * @brief   Virtual IRQ to be used for alarm.
+ */
+#if !defined(SB_CFG_ALARM_VRQ) || defined(__DOXYGEN__)
+#define SB_CFG_ALARM_VRQ                    0
+#endif
+
 /**
  * @brief   Enables Posix API in sandboxes using VFS.
  */

demos/STM32/RT-STM32L4R9-DISCOVERY-RAM_SB_HOST_DYNAMIC/cfg/sbconf.h

@@ -45,6 +45,13 @@
 #define SB_CFG_ENABLE_VRQ                   TRUE
 #endif
 
+/**
+ * @brief   Virtual IRQ to be used for alarm.
+ */
+#if !defined(SB_CFG_ALARM_VRQ) || defined(__DOXYGEN__)
+#define SB_CFG_ALARM_VRQ                    0
+#endif
+
 /**
  * @brief   Enables Posix API in sandboxes using VFS.
  */

demos/STM32/RT-STM32L4R9-DISCOVERY-SB_HOST_STATIC/cfg/sbconf.h

@@ -45,6 +45,13 @@
 #define SB_CFG_ENABLE_VRQ                   TRUE
 #endif
 
+/**
+ * @brief   Virtual IRQ to be used for alarm.
+ */
+#if !defined(SB_CFG_ALARM_VRQ) || defined(__DOXYGEN__)
+#define SB_CFG_ALARM_VRQ                    0
+#endif
+
 /**
  * @brief   Enables Posix API in sandboxes using VFS.
  */

os/sb/common/sbsysc.h

@@ -49,6 +49,8 @@
 #define SB_SYSC_EVENT_WAIT_ALL  10
 #define SB_SYSC_EVENT_BROADCAST 11
 #define SB_SYSC_LOADELF         12
+#define SB_SYSC_VRQ_SET_ALARM   245
+#define SB_SYSC_VRQ_RESET_ALARM 246
 #define SB_SYSC_VRQ_WAIT        247
 #define SB_SYSC_VRQ_SETWT       248
 #define SB_SYSC_VRQ_CLRWT       249

os/sb/host/sb.h

@@ -100,6 +100,10 @@
 #error "SB_CFG_ENABLE_VRQ not defined in sbconf.h"
 #endif
 
+#if !defined(SB_CFG_ALARM_VRQ) || defined(__DOXYGEN__)
+#error "SB_CFG_ALARM_VRQ not defined in sbconf.h"
+#endif
+
 #if !defined(SB_CFG_ENABLE_VFS) || defined(__DOXYGEN__)
 #error "SB_CFG_ENABLE_VFS not defined in sbconf.h"
 #endif
@@ -152,6 +156,10 @@
 #error "SB_CFG_NUM_REGIONS not matching PORT_SWITCHED_REGIONS_NUMBER"
 #endif
 
+#if (SB_CFG_ALARM_VRQ < 0) || (SB_CFG_ALARM_VRQ > 31)
+#error "invalid SB_CFG_ALARM_VRQ value"
+#endif
+
 /*===========================================================================*/
 /* Module data structures and types.                                         */
 /*===========================================================================*/
@@ -255,6 +263,10 @@ typedef struct {
    * @brief   Pointer to the image header.
    */
   const sb_header_t             *sbhp;
+  /**
+   * @brief   Virtual timer used for alarms.
+   */
+  virtual_timer_t               alarm_vt;
 #if (CH_CFG_USE_MESSAGES == TRUE) || defined(__DOXYGEN__)
   /**
    * @brief   Thread sending a message to the sandbox.

os/sb/host/sbapi.c

@@ -76,6 +76,8 @@ static void sb_api_loadelf(struct port_extctx *ectxp);
  * @{
  */
 #if (SB_CFG_ENABLE_VRQ == TRUE) || defined(__DOXYGEN__)
+#define SB_SVC245_HANDLER       sb_api_vrq_set_alarm
+#define SB_SVC246_HANDLER       sb_api_vrq_reset_alarm
 #define SB_SVC247_HANDLER       sb_api_vrq_wait
 #define SB_SVC248_HANDLER       sb_api_vrq_setwt
 #define SB_SVC249_HANDLER       sb_api_vrq_clrwt

os/sb/host/sbvrq.c

@@ -101,6 +101,14 @@ static void vrq_privileged_code(void) {
   }
 }
 
+static void delay_cb(virtual_timer_t *vtp, void *arg) {
+  sb_class_t *sbp = (sb_class_t *)arg;
+
+  (void)vtp;
+
+  sbVRQTriggerFromISR(sbp, 1U << SB_CFG_ALARM_VRQ);
+}
+
 /*===========================================================================*/
 /* Module exported functions.                                                */
 /*===========================================================================*/
@@ -235,6 +243,31 @@ void sbVRQTriggerFromISR(sb_class_t *sbp, sb_vrqmask_t vmask) {
   return;
 }
 
+void sb_api_vrq_set_alarm(struct port_extctx *ectxp) {
+  sb_class_t *sbp = (sb_class_t *)chThdGetSelfX()->ctx.syscall.p;
+  sysinterval_t interval = (sysinterval_t )ectxp->r0;
+  bool continuous = (bool)ectxp->r1;
+
+  if (continuous) {
+    chVTSetContinuous(&sbp->alarm_vt, interval, delay_cb, (void *)sbp);
+  }
+  else {
+    chVTSet(&sbp->alarm_vt, interval, delay_cb, (void *)sbp);
+  }
+
+  ectxp->r0 = CH_RET_SUCCESS;
+}
+
+void sb_api_vrq_reset_alarm(struct port_extctx *ectxp) {
+  sb_class_t *sbp = (sb_class_t *)chThdGetSelfX()->ctx.syscall.p;
+
+  (void)ectxp;
+
+  chVTReset(&sbp->alarm_vt);
+
+  ectxp->r0 = CH_RET_SUCCESS;
+}
+
 void sb_api_vrq_wait(struct port_extctx *ectxp) {
   sb_class_t *sbp = (sb_class_t *)chThdGetSelfX()->ctx.syscall.p;
   sb_vrqmask_t active_mask;
@@ -249,6 +282,8 @@ void sb_api_vrq_wait(struct port_extctx *ectxp) {
   }
 
   chSysUnlock();
+
+  ectxp->r0 = CH_RET_SUCCESS;
 }
 
 void sb_api_vrq_setwt(struct port_extctx *ectxp) {

os/sb/host/sbvrq.h

@@ -66,6 +66,8 @@ extern "C" {
 #endif
   void sbVRQTriggerS(sb_class_t *sbp, sb_vrqmask_t vmask);
   void sbVRQTriggerFromISR(sb_class_t *sbp, sb_vrqmask_t vmask);
+  void sb_api_vrq_set_alarm(struct port_extctx *ectxp);
+  void sb_api_vrq_reset_alarm(struct port_extctx *ectxp);
   void sb_api_vrq_wait(struct port_extctx *ectxp);
   void sb_api_vrq_setwt(struct port_extctx *ectxp);
   void sb_api_vrq_clrwt(struct port_extctx *ectxp);