No functional changes.
Signed-off-by: Felipe Contreras <felipe.contre...@gmail.com>
---
drivers/staging/tidspbridge/core/mmu_fault.c | 102 +++++++++-----------------
1 files changed, 34 insertions(+), 68 deletions(-)
diff --git a/drivers/staging/tidspbridge/core/mmu_fault.c
b/drivers/staging/tidspbridge/core/mmu_fault.c
index 5c0124f..42fe23f 100644
--- a/drivers/staging/tidspbridge/core/mmu_fault.c
+++ b/drivers/staging/tidspbridge/core/mmu_fault.c
@@ -40,11 +40,8 @@
#include "_tiomap.h"
#include "mmu_fault.h"
-static u32 dmmu_event_mask;
u32 fault_addr;
-static bool mmu_check_if_fault(struct bridge_dev_context *dev_context);
-
/*
* ======== mmu_fault_dpc ========
* Deferred procedure call to handle DSP MMU fault.
@@ -53,9 +50,10 @@ void mmu_fault_dpc(IN unsigned long pRefData)
{
struct deh_mgr *hdeh_mgr = (struct deh_mgr *)pRefData;
- if (hdeh_mgr)
- bridge_deh_notify(hdeh_mgr, DSP_MMUFAULT, 0L);
+ if (!hdeh_mgr)
+ return;
+ bridge_deh_notify(hdeh_mgr, DSP_MMUFAULT, 0L);
}
/*
@@ -64,76 +62,44 @@ void mmu_fault_dpc(IN unsigned long pRefData)
*/
irqreturn_t mmu_fault_isr(int irq, IN void *pRefData)
{
- struct deh_mgr *deh_mgr_obj = (struct deh_mgr *)pRefData;
- struct bridge_dev_context *dev_context;
+ struct deh_mgr *deh_mgr_obj = pRefData;
struct cfg_hostres *resources;
+ u32 dmmu_event_mask;
- DBC_REQUIRE(irq == INT_DSP_MMU_IRQ);
- DBC_REQUIRE(deh_mgr_obj);
-
- if (deh_mgr_obj) {
-
- dev_context =
- (struct bridge_dev_context *)deh_mgr_obj->hbridge_context;
-
- resources = dev_context->resources;
+ if (!deh_mgr_obj)
+ return IRQ_HANDLED;
- if (!resources) {
- dev_dbg(bridge, "%s: Failed to get Host Resources\n",
+ resources = deh_mgr_obj->hbridge_context->resources;
+ if (!resources) {
+ dev_dbg(bridge, "%s: Failed to get Host Resources\n",
__func__);
- return IRQ_HANDLED;
- }
- if (mmu_check_if_fault(dev_context)) {
- printk(KERN_INFO "***** DSPMMU FAULT ***** IRQStatus "
- "0x%x\n", dmmu_event_mask);
- printk(KERN_INFO "***** DSPMMU FAULT ***** fault_addr "
- "0x%x\n", fault_addr);
- /*
- * Schedule a DPC directly. In the future, it may be
- * necessary to check if DSP MMU fault is intended for
- * Bridge.
- */
- tasklet_schedule(&deh_mgr_obj->dpc_tasklet);
-
- /* Reset err_info structure before use. */
- deh_mgr_obj->err_info.dw_err_mask = DSP_MMUFAULT;
- deh_mgr_obj->err_info.dw_val1 = fault_addr >> 16;
- deh_mgr_obj->err_info.dw_val2 = fault_addr & 0xFFFF;
- deh_mgr_obj->err_info.dw_val3 = 0L;
- /* Disable the MMU events, else once we clear it will
- * start to raise INTs again */
- hw_mmu_event_disable(resources->dw_dmmu_base,
- HW_MMU_TRANSLATION_FAULT);
- } else {
- hw_mmu_event_disable(resources->dw_dmmu_base,
- HW_MMU_ALL_INTERRUPTS);
- }
+ return IRQ_HANDLED;
}
- return IRQ_HANDLED;
-}
-/*
- * ======== mmu_check_if_fault ========
- * Check to see if MMU Fault is valid TLB miss from DSP
- * Note: This function is called from an ISR
- */
-static bool mmu_check_if_fault(struct bridge_dev_context *dev_context)
-{
-
- bool ret = false;
- hw_status hw_status_obj;
- struct cfg_hostres *resources = dev_context->resources;
-
- if (!resources) {
- dev_dbg(bridge, "%s: Failed to get Host Resources in\n",
- __func__);
- return ret;
- }
- hw_status_obj =
- hw_mmu_event_status(resources->dw_dmmu_base, &dmmu_event_mask);
+ hw_mmu_event_status(resources->dw_dmmu_base, &dmmu_event_mask);
if (dmmu_event_mask == HW_MMU_TRANSLATION_FAULT) {
hw_mmu_fault_addr_read(resources->dw_dmmu_base, &fault_addr);
- ret = true;
+ dev_info(bridge, "%s: status=0x%x, fault_addr=0x%x\n", __func__,
+ dmmu_event_mask, fault_addr);
+ /*
+ * Schedule a DPC directly. In the future, it may be
+ * necessary to check if DSP MMU fault is intended for
+ * Bridge.
+ */
+ tasklet_schedule(&deh_mgr_obj->dpc_tasklet);
+
+ /* Reset err_info structure before use. */
+ deh_mgr_obj->err_info.dw_err_mask = DSP_MMUFAULT;
+ deh_mgr_obj->err_info.dw_val1 = fault_addr >> 16;
+ deh_mgr_obj->err_info.dw_val2 = fault_addr & 0xFFFF;
+ deh_mgr_obj->err_info.dw_val3 = 0L;
+ /* Disable the MMU events, else once we clear it will
+ * start to raise INTs again */
+ hw_mmu_event_disable(resources->dw_dmmu_base,
+ HW_MMU_TRANSLATION_FAULT);
+ } else {
+ hw_mmu_event_disable(resources->dw_dmmu_base,
+ HW_MMU_ALL_INTERRUPTS);
}
- return ret;
+ return IRQ_HANDLED;
}
--
1.7.1
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