diff options
Diffstat (limited to 'cpu/mpc824x/drivers/epic')
| -rw-r--r-- | cpu/mpc824x/drivers/epic/epic.h | 3 | ||||
| -rw-r--r-- | cpu/mpc824x/drivers/epic/epic1.c | 19 |
2 files changed, 15 insertions, 7 deletions
diff --git a/cpu/mpc824x/drivers/epic/epic.h b/cpu/mpc824x/drivers/epic/epic.h index 7751db2..17e4afb 100644 --- a/cpu/mpc824x/drivers/epic/epic.h +++ b/cpu/mpc824x/drivers/epic/epic.h @@ -108,6 +108,9 @@ #define EPIC_PROC_INT_ACK_REG (EPIC_EUMBBAR + 0x200a0)/* Int. acknowledge */ #define EPIC_PROC_EOI_REG (EPIC_EUMBBAR + 0x200b0)/* End of interrupt */ +#define EPIC_VEC_PRI_MASK 0x80000000 /* Mask Interrupt bit in IVPR */ +#define EPIC_VEC_PRI_DFLT_PRI 8 /* Interrupt Priority in IVPR */ + /* Error code */ #define OK 0 diff --git a/cpu/mpc824x/drivers/epic/epic1.c b/cpu/mpc824x/drivers/epic/epic1.c index 362e129..eb7ed40 100644 --- a/cpu/mpc824x/drivers/epic/epic1.c +++ b/cpu/mpc824x/drivers/epic/epic1.c @@ -70,6 +70,10 @@ void epicInit tmp = sysEUMBBARRead(EPIC_GLOBAL_REG); tmp |= 0xa0000000; /* Set the Global Conf. register */ sysEUMBBARWrite(EPIC_GLOBAL_REG, tmp); + /* + * Wait for EPIC to reset - CLH + */ + while( (sysEUMBBARRead(EPIC_GLOBAL_REG) & 0x80000000) == 1); sysEUMBBARWrite(EPIC_GLOBAL_REG, 0x20000000); tmp = sysEUMBBARRead(EPIC_INT_CONF_REG); /* Read interrupt conf. reg */ @@ -81,7 +85,8 @@ void epicInit sysEUMBBARWrite(EPIC_INT_CONF_REG, tmp); } - while (epicIntAck() != 0xff); /* Clear all pending interrupts */ + while (epicIntAck() != 0xff) /* Clear all pending interrupts */ + epicEOI(); } /**************************************************************************** @@ -92,18 +97,18 @@ void epicInit * * RETURNS: None */ -void epicIntEnable - ( - int intVec /* Interrupt Vector Number */ - ) - { +void epicIntEnable(int intVec) +{ ULONG tmp; ULONG srAddr; srAddr = SrcVecTable[intVec].srcAddr; /* Retrieve src Vec/Prio register */ tmp = sysEUMBBARRead(srAddr); - tmp &= 0x7fffffff; /* Clear the mask bit */ + tmp &= ~EPIC_VEC_PRI_MASK; /* Clear the mask bit */ + tmp |= (EPIC_VEC_PRI_DFLT_PRI << 16); /* Set priority to Default - CLH */ + tmp |= intVec; /* Set Vector number */ sysEUMBBARWrite(srAddr, tmp); + return; } |