From: Ramesh Gupta <grgupta@xxxxxx>
Date: Wed, 14 Jan 2009 17:39:20 +0530
Subject: [PATCH] DSPBRIDGE Wakeup IVA before accessing IVA MMU Registers
Wakeup IVA before accessing IVA MMU Registers
Signed-off-by: Ramesh Gupta G <grgupta@xxxxxx>
---
drivers/dsp/bridge/wmd/tiomap3430.c | 21 +++++++++++++++++++--
1 files changed, 19 insertions(+), 2 deletions(-)
diff --git a/drivers/dsp/bridge/wmd/tiomap3430.c b/drivers/dsp/bridge/wmd/tiomap3430.c
index c05383e..d838169 100644
--- a/drivers/dsp/bridge/wmd/tiomap3430.c
+++ b/drivers/dsp/bridge/wmd/tiomap3430.c
@@ -1289,6 +1290,7 @@ static DSP_STATUS WMD_BRD_MemMap(struct WMD_DEV_CONTEXT *hDevContext,
struct HW_MMUMapAttrs_t hwAttrs;
u32 numOfActualTabEntries = 0;
u32 temp = 0;
+ struct CFG_HOSTRES resources;
u32 *pPhysAddrPageTbl = NULL;
struct vm_area_struct *vma;
struct mm_struct *mm = current->mm;
@@ -1296,6 +1298,10 @@ static DSP_STATUS WMD_BRD_MemMap(struct WMD_DEV_CONTEXT *hDevContext,
DBG_Trace(DBG_ENTER, "> WMD_BRD_MemMap hDevContext %x, pa %x, va %x, "
"size %x, ulMapAttr %x\n", hDevContext, ulMpuAddr, ulVirtAddr,
ulNumBytes, ulMapAttr);
+ status = CFG_GetHostResources(
+ (struct CFG_DEVNODE *)DRV_GetFirstDevExtension(),
+ &resources);
+
if (ulNumBytes == 0)
return DSP_EINVALIDARG;
@@ -1423,7 +1429,16 @@ func_cont:
* This is called from here instead from PteUpdate to avoid unnecessary
* repetition while mapping non-contiguous physical regions of a virtual
* region */
- HW_MMU_TLBFlushAll(pDevContext->dwDSPMmuBase);
+ HW_PWRST_IVA2RegGet(resources.dwPrmBase, &temp);
+ if ((temp & HW_PWR_STATE_ON) == HW_PWR_STATE_OFF) {
+ /* IVA domain is not in ON state*/
+ DBG_Trace(DBG_LEVEL7, "temp value is 0x%x\n", temp);
+ CLK_Enable(SERVICESCLK_iva2_ck);
+ WakeDSP(pDevContext, NULL);
+ HW_MMU_TLBFlushAll(pDevContext->dwDSPMmuBase);
+ CLK_Disable(SERVICESCLK_iva2_ck);
+ } else
+ HW_MMU_TLBFlushAll(pDevContext->dwDSPMmuBase);
DBG_Trace(DBG_ENTER, "< WMD_BRD_MemMap status %x\n", status);
return status;
}
@@ -1564,6 +1579,7 @@ static DSP_STATUS WMD_BRD_MemUnMap(struct WMD_DEV_CONTEXT *hDevContext,
/* It is better to flush the TLB here, so that any stale old entries
* get flushed */
EXIT_LOOP:
+ IO_InterruptDSP2(pDevContext, MBX_PM_DSPWAKEUP);
HW_MMU_TLBFlushAll(pDevContext->dwDSPMmuBase);
DBG_Trace(DBG_LEVEL1, "WMD_BRD_MemUnMap vaCurr %x, pteAddrL1 %x "
"pteAddrL2 %x\n", vaCurr, pteAddrL1, pteAddrL2);
@@ -2048,6 +2064,7 @@ func_cont:
* repetition while mapping non-contiguous physical regions of a virtual
* region */
/* Waking up DSP before calling TLB Flush */
+ IO_InterruptDSP2(pDevContext, MBX_PM_DSPWAKEUP);
HW_MMU_TLBFlushAll(pDevContext->dwDSPMmuBase);
DBG_Trace(DBG_LEVEL7, "< WMD_BRD_MemMap at end status %x\n", status);
return status;
--
1.5.3.2
--
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