All this code is just to print the stack, so make it clearer.
Signed-off-by: Felipe Contreras <[email protected]>
---
drivers/staging/tidspbridge/core/ue_deh.c | 65 ++++++++++++++++-------------
1 files changed, 36 insertions(+), 29 deletions(-)
diff --git a/drivers/staging/tidspbridge/core/ue_deh.c
b/drivers/staging/tidspbridge/core/ue_deh.c
index 793e982..1e506d7 100644
--- a/drivers/staging/tidspbridge/core/ue_deh.c
+++ b/drivers/staging/tidspbridge/core/ue_deh.c
@@ -140,9 +140,8 @@ int bridge_deh_register_notify(struct deh_mgr *deh_mgr, u32
event_mask,
return ntfy_unregister(deh_mgr->ntfy_obj, hnotification);
}
-void bridge_deh_notify(struct deh_mgr *deh_mgr, u32 ulEventMask, u32 dwErrInfo)
+static void mmu_fault_print_stack(struct bridge_dev_context *dev_context)
{
- struct bridge_dev_context *dev_context;
struct cfg_hostres *resources;
struct hw_mmu_map_attrs_t map_attrs = {
.endianism = HW_LITTLE_ENDIAN,
@@ -151,12 +150,45 @@ void bridge_deh_notify(struct deh_mgr *deh_mgr, u32
ulEventMask, u32 dwErrInfo)
};
void *dummy_va_addr;
+ resources = dev_context->resources;
+ dummy_va_addr = (void*)__get_free_page(GFP_ATOMIC);
+
+ /*
+ * Before acking the MMU fault, let's make sure MMU can only
+ * access entry #0. Then add a new entry so that the DSP OS
+ * can continue in order to dump the stack.
+ */
+ hw_mmu_twl_disable(resources->dw_dmmu_base);
+ hw_mmu_tlb_flush_all(resources->dw_dmmu_base);
+
+ hw_mmu_tlb_add(resources->dw_dmmu_base,
+ virt_to_phys(dummy_va_addr), fault_addr,
+ HW_PAGE_SIZE4KB, 1,
+ &map_attrs, HW_SET, HW_SET);
+
+ dsp_clk_enable(DSP_CLK_GPT8);
+
+ dsp_gpt_wait_overflow(DSP_CLK_GPT8, 0xfffffffe);
+
+ /* Clear MMU interrupt */
+ hw_mmu_event_ack(resources->dw_dmmu_base,
+ HW_MMU_TRANSLATION_FAULT);
+ dump_dsp_stack(dev_context);
+ dsp_clk_disable(DSP_CLK_GPT8);
+
+ hw_mmu_disable(resources->dw_dmmu_base);
+ free_page((unsigned long)dummy_va_addr);
+}
+
+void bridge_deh_notify(struct deh_mgr *deh_mgr, u32 ulEventMask, u32 dwErrInfo)
+{
+ struct bridge_dev_context *dev_context;
+
if (!deh_mgr)
return;
dev_info(bridge, "%s: device exception\n", __func__);
dev_context = deh_mgr->hbridge_context;
- resources = dev_context->resources;
switch (ulEventMask) {
case DSP_SYSERROR:
@@ -181,36 +213,11 @@ void bridge_deh_notify(struct deh_mgr *deh_mgr, u32
ulEventMask, u32 dwErrInfo)
(unsigned int) deh_mgr->err_info.dw_val1,
(unsigned int) deh_mgr->err_info.dw_val2,
(unsigned int) fault_addr);
- dummy_va_addr = (void*)__get_free_page(GFP_ATOMIC);
print_dsp_trace_buffer(dev_context);
dump_dl_modules(dev_context);
- /*
- * Before acking the MMU fault, let's make sure MMU can only
- * access entry #0. Then add a new entry so that the DSP OS
- * can continue in order to dump the stack.
- */
- hw_mmu_twl_disable(resources->dw_dmmu_base);
- hw_mmu_tlb_flush_all(resources->dw_dmmu_base);
-
- hw_mmu_tlb_add(resources->dw_dmmu_base,
- virt_to_phys(dummy_va_addr), fault_addr,
- HW_PAGE_SIZE4KB, 1,
- &map_attrs, HW_SET, HW_SET);
-
- dsp_clk_enable(DSP_CLK_GPT8);
-
- dsp_gpt_wait_overflow(DSP_CLK_GPT8, 0xfffffffe);
-
- /* Clear MMU interrupt */
- hw_mmu_event_ack(resources->dw_dmmu_base,
- HW_MMU_TRANSLATION_FAULT);
- dump_dsp_stack(dev_context);
- dsp_clk_disable(DSP_CLK_GPT8);
-
- hw_mmu_disable(resources->dw_dmmu_base);
- free_page((unsigned long)dummy_va_addr);
+ mmu_fault_print_stack(dev_context);
break;
#ifdef CONFIG_BRIDGE_NTFY_PWRERR
case DSP_PWRERROR:
--
1.7.1
--
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