[PATCH v2 18/20] DSPBRIDGE: Remove main DPC wrapper for IO and MMUfault

Omar Ramirez Luna
2009-11-30T21:49:03Z

Remove DeferredProcedure which is used as a wrapper to call
either IO or MMUfault DPCs. This also removes a custom typedef.

Signed-off-by: Omar Ramirez Luna <omar.ramirez@ti.com>
---
arch/arm/plat-omap/include/dspbridge/dpc.h | 23 ------------
arch/arm/plat-omap/include/dspbridge/io_sm.h | 2 +-
drivers/dsp/bridge/services/dpc.c | 36 ------------------
drivers/dsp/bridge/wmd/io_sm.c | 50 ++++++++++++++++---------
drivers/dsp/bridge/wmd/mmu_fault.c | 2 +-
drivers/dsp/bridge/wmd/mmu_fault.h | 2 +-
drivers/dsp/bridge/wmd/ue_deh.c | 5 +--
7 files changed, 36 insertions(+), 84 deletions(-)

diff --git a/arch/arm/plat-omap/include/dspbridge/dpc.h b/arch/arm/plat-omap/include/dspbridge/dpc.h
index 0c60342..b22140f 100644
--- a/arch/arm/plat-omap/include/dspbridge/dpc.h
+++ b/arch/arm/plat-omap/include/dspbridge/dpc.h
@@ -19,30 +19,10 @@
#ifndef DPC_
#define DPC_

-/*
- * ======== DPC_PROC ========
- * Purpose:
- * Deferred processing routine. Typically scheduled from an ISR to
- * complete I/O processing.
- * Parameters:
- * pRefData: Ptr to user data: passed in via ISR_ScheduleDPC.
- * Returns:
- * Requires:
- * The DPC should not block, or otherwise acquire resources.
- * Interrupts to the processor are enabled.
- * DPC_PROC executes in a critical section.
- * Ensures:
- * This DPC will not be reenterred on the same thread.
- * However, the DPC may take hardware interrupts during execution.
- * Interrupts to the processor are enabled.
- */
- typedef void(*DPC_PROC) (void *pRefData);
-
/* The DPC object, passed to our priority event callback routine: */
struct DPC_OBJECT {
u32 dwSignature; /* Used for object validation. */
void *pRefData; /* Argument for client's DPC. */
- DPC_PROC pfnDPC; /* Client's DPC. */
u32 numRequested; /* Number of requested DPC's. */
u32 numScheduled; /* Number of executed DPC's. */
struct tasklet_struct dpc_tasklet;
@@ -81,7 +61,4 @@ struct DPC_OBJECT {
*/
extern bool DPC_Init(void);

-/* ----------------------------------- Function Prototypes */
- void DPC_DeferredProcedure(IN unsigned long pDeferredContext);
-
#endif /* DPC_ */
diff --git a/arch/arm/plat-omap/include/dspbridge/io_sm.h b/arch/arm/plat-omap/include/dspbridge/io_sm.h
index 77f9e25..67e3834 100644
--- a/arch/arm/plat-omap/include/dspbridge/io_sm.h
+++ b/arch/arm/plat-omap/include/dspbridge/io_sm.h
@@ -77,7 +77,7 @@
* Ensures:
* Non-preemptible (but interruptible).
*/
- extern void IO_DPC(IN OUT void *pRefData);
+ extern void IO_DPC(IN OUT unsigned long pRefData);

/*
* ======== IO_ISR ========
diff --git a/drivers/dsp/bridge/services/dpc.c b/drivers/dsp/bridge/services/dpc.c
index 10bd792..bbb2d47 100644
--- a/drivers/dsp/bridge/services/dpc.c
+++ b/drivers/dsp/bridge/services/dpc.c
@@ -66,39 +66,3 @@ bool DPC_Init(void)
return true;
}

-/*
- * ======== DeferredProcedure ========
- * Purpose:
- * Main DPC routine. This is called by host OS DPC callback
- * mechanism with interrupts enabled.
- */
-void DPC_DeferredProcedure(IN unsigned long pDeferredContext)
-{
- struct DPC_OBJECT *pDPCObject = (struct DPC_OBJECT *)pDeferredContext;
- /* read numRequested in local variable */
- u32 requested;
- u32 serviced;
-
- DBC_Require(pDPCObject != NULL);
- requested = pDPCObject->numRequested;
- serviced = pDPCObject->numScheduled;
-
- GT_1trace(DPC_DebugMask, GT_ENTER, "> DPC_DeferredProcedure "
- "pDeferredContext=%x\n", pDeferredContext);
- /* Rollover taken care of using != instead of < */
- if (serviced != requested) {
- if (pDPCObject->pfnDPC != NULL) {
- /* Process pending DPC's: */
- do {
- /* Call client's DPC: */
- (*(pDPCObject->pfnDPC))(pDPCObject->pRefData);
- serviced++;
- } while (serviced != requested);
- }
- pDPCObject->numScheduled = requested;
- }
- GT_2trace(DPC_DebugMask, GT_ENTER,
- "< DPC_DeferredProcedure requested %d"
- " serviced %d\n", requested, serviced);
-}
-
diff --git a/drivers/dsp/bridge/wmd/io_sm.c b/drivers/dsp/bridge/wmd/io_sm.c
index d465763..177dbbc 100644
--- a/drivers/dsp/bridge/wmd/io_sm.c
+++ b/drivers/dsp/bridge/wmd/io_sm.c
@@ -255,10 +255,8 @@ DSP_STATUS WMD_IO_Create(OUT struct IO_MGR **phIOMgr,
IO_MGRSIGNATURE);
if (pIOMgr->hDPC) {
tasklet_init(&pIOMgr->hDPC->dpc_tasklet,
- DPC_DeferredProcedure, (u32)pIOMgr->hDPC);
+ IO_DPC, (u32)pIOMgr);
/* Fill out our DPC Object */
- pIOMgr->hDPC->pRefData = (void *)pIOMgr;
- pIOMgr->hDPC->pfnDPC = IO_DPC;
pIOMgr->hDPC->numRequested = 0;
pIOMgr->hDPC->numScheduled = 0;
#ifdef DEBUG
@@ -1010,12 +1008,14 @@ static void IO_DispatchPM(struct work_struct *work)
* out the dispatch of I/O as a non-preemptible event.It can only be
* pre-empted by an ISR.
*/
-void IO_DPC(IN OUT void *pRefData)
+void IO_DPC(IN OUT unsigned long pRefData)
{
struct IO_MGR *pIOMgr = (struct IO_MGR *)pRefData;
struct CHNL_MGR *pChnlMgr;
struct MSG_MGR *pMsgMgr;
struct DEH_MGR *hDehMgr;
+ u32 requested;
+ u32 serviced;

if (!MEM_IsValidHandle(pIOMgr, IO_MGRSIGNATURE))
goto func_end;
@@ -1025,24 +1025,38 @@ void IO_DPC(IN OUT void *pRefData)
if (!MEM_IsValidHandle(pChnlMgr, CHNL_MGRSIGNATURE))
goto func_end;
DBG_Trace(DBG_LEVEL7, "Entering IO_DPC(0x%x)\n", pRefData);
- /* Check value of interrupt register to ensure it is a valid error */
- if ((pIOMgr->wIntrVal > DEH_BASE) && (pIOMgr->wIntrVal < DEH_LIMIT)) {
- /* Notify DSP/BIOS exception */
- if (hDehMgr)
- WMD_DEH_Notify(hDehMgr, DSP_SYSERROR, pIOMgr->wIntrVal);
- }
- IO_DispatchChnl(pIOMgr, NULL, IO_SERVICE);
+
+ requested = pIOMgr->hDPC->numRequested;
+ serviced = pIOMgr->hDPC->numScheduled;
+
+ if (serviced == requested)
+ goto func_end;
+
+ /* Process pending DPC's */
+ do {
+ /* Check value of interrupt reg to ensure it's a valid error */
+ if ((pIOMgr->wIntrVal > DEH_BASE) &&
+ (pIOMgr->wIntrVal < DEH_LIMIT)) {
+ /* Notify DSP/BIOS exception */
+ if (hDehMgr)
+ WMD_DEH_Notify(hDehMgr, DSP_SYSERROR,
+ pIOMgr->wIntrVal);
+ }
+ IO_DispatchChnl(pIOMgr, NULL, IO_SERVICE);
#ifdef CHNL_MESSAGES
- if (MEM_IsValidHandle(pMsgMgr, MSGMGR_SIGNATURE))
- IO_DispatchMsg(pIOMgr, pMsgMgr);
+ if (MEM_IsValidHandle(pMsgMgr, MSGMGR_SIGNATURE))
+ IO_DispatchMsg(pIOMgr, pMsgMgr);
#endif
#ifndef DSP_TRACEBUF_DISABLED
- if (pIOMgr->wIntrVal & MBX_DBG_CLASS) {
- /* Notify DSP Trace message */
- if (pIOMgr->wIntrVal & MBX_DBG_SYSPRINTF)
- PrintDSPDebugTrace(pIOMgr);
- }
+ if (pIOMgr->wIntrVal & MBX_DBG_CLASS) {
+ /* Notify DSP Trace message */
+ if (pIOMgr->wIntrVal & MBX_DBG_SYSPRINTF)
+ PrintDSPDebugTrace(pIOMgr);
+ }
#endif
+ serviced++;
+ } while (serviced != requested);
+ pIOMgr->hDPC->numScheduled = requested;
func_end:
return;
}
diff --git a/drivers/dsp/bridge/wmd/mmu_fault.c b/drivers/dsp/bridge/wmd/mmu_fault.c
index 0e03cd1..b3f0719 100644
--- a/drivers/dsp/bridge/wmd/mmu_fault.c
+++ b/drivers/dsp/bridge/wmd/mmu_fault.c
@@ -54,7 +54,7 @@ static bool MMU_CheckIfFault(struct WMD_DEV_CONTEXT *pDevContext);
* ======== MMU_FaultDpc ========
* Deferred procedure call to handle DSP MMU fault.
*/
-void MMU_FaultDpc(IN void *pRefData)
+void MMU_FaultDpc(IN unsigned long pRefData)
{
struct DEH_MGR *hDehMgr = (struct DEH_MGR *)pRefData;
struct DEH_MGR *pDehMgr = (struct DEH_MGR *)hDehMgr;
diff --git a/drivers/dsp/bridge/wmd/mmu_fault.h b/drivers/dsp/bridge/wmd/mmu_fault.h
index bed466c..d3849b5 100644
--- a/drivers/dsp/bridge/wmd/mmu_fault.h
+++ b/drivers/dsp/bridge/wmd/mmu_fault.h
@@ -23,7 +23,7 @@
* ======== MMU_FaultDpc ========
* Deferred procedure call to handle DSP MMU fault.
*/
- void MMU_FaultDpc(IN void *pRefData);
+ void MMU_FaultDpc(IN unsigned long pRefData);

/*
* ======== MMU_FaultIsr ========
diff --git a/drivers/dsp/bridge/wmd/ue_deh.c b/drivers/dsp/bridge/wmd/ue_deh.c
index 12f73e7..4d0bcf2 100644
--- a/drivers/dsp/bridge/wmd/ue_deh.c
+++ b/drivers/dsp/bridge/wmd/ue_deh.c
@@ -95,11 +95,8 @@ DSP_STATUS WMD_DEH_Create(OUT struct DEH_MGR **phDehMgr,
SIGNATURE);
if (pDehMgr->hMmuFaultDpc) {
tasklet_init(&pDehMgr->hMmuFaultDpc->dpc_tasklet,
- DPC_DeferredProcedure,
- (u32)pDehMgr->hMmuFaultDpc);
+ MMU_FaultDpc, (u32)pDehMgr);
/* Fill out DPC Object */
- pDehMgr->hMmuFaultDpc->pRefData = (void *)pDehMgr;
- pDehMgr->hMmuFaultDpc->pfnDPC = MMU_FaultDpc;
pDehMgr->hMmuFaultDpc->numRequested = 0;
pDehMgr->hMmuFaultDpc->numScheduled = 0;
#ifdef DEBUG
--
1.6.2.4