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iommu: msm: Add debug iova_to_phys in secure fault handler 

Now that we route all non-secure CB fault also to the secure
fault handler, we want it to print debug info of iova_to_phys
for non-secure context banks. Add that debug feature in
secure fault handler.

Change-Id: Ie5a56c47d9e73d758daaf3d023774c32ac98dfe3
Signed-off-by: Chintan Pandya <cpandya@codeaurora.org>
This commit is contained in:
Chintan Pandya 2015-03-27 15:32:57 +05:30
parent 10555bac13
commit d37962c71a
1 changed files with 21 additions and 0 deletions
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21
drivers/iommu/msm_iommu_sec.c
View File

@ -32,6 +32,7 @@
#include <asm/cacheflush.h>
#include <asm/sizes.h>
#include "msm_iommu_pagetable.h"
#include "msm_iommu_perfmon.h"
#include "msm_iommu_hw-v1.h"
#include "msm_iommu_priv.h"
@ -249,6 +250,25 @@ static int msm_iommu_reg_dump_to_regs(
return ret;
}
static void print_iova_to_phys(struct msm_iommu_ctx_drvdata *ctx_drvdata,
struct msm_iommu_context_reg ctx_regs[MAX_DUMP_REGS])
{
phys_addr_t pagetable_phys;
u64 faulty_iova = 0;
if (ctx_drvdata->attached_domain &&
!ctx_drvdata->secure_context) {
faulty_iova = COMBINE_DUMP_REG(
ctx_regs[DUMP_REG_FAR1].val,
ctx_regs[DUMP_REG_FAR0].val);
pagetable_phys = msm_iommu_iova_to_phys_soft(
ctx_drvdata->attached_domain,
faulty_iova);
pr_err("Page table in DDR shows PA = %lx\n",
(unsigned long) pagetable_phys);
}
}
irqreturn_t msm_iommu_secure_fault_handler_v2(int irq, void *dev_id)
{
struct platform_device *pdev = dev_id;
@ -329,6 +349,7 @@ irqreturn_t msm_iommu_secure_fault_handler_v2(int irq, void *dev_id)
ctx_drvdata->num);
pr_err("Interesting registers:\n");
print_ctx_regs(ctx_regs);
print_iova_to_phys(ctx_drvdata, ctx_regs);
}
} else {
ret = IRQ_NONE;