From: Dikshita Agarwal <dikshita@xxxxxxxxxxxxxx>
Add support to dump video FW region during FW crash
using devcoredump helpers.
Signed-off-by: Dikshita Agarwal <dikshita@xxxxxxxxxxxxxx>
---
drivers/media/platform/qcom/venus/core.c | 30 ++++++++++++++++++++++++++++
drivers/media/platform/qcom/venus/core.h | 2 ++
drivers/media/platform/qcom/venus/firmware.c | 3 +++
3 files changed, 35 insertions(+)
diff --git a/drivers/media/platform/qcom/venus/core.c b/drivers/media/platform/qcom/venus/core.c
index 5102403..dd8d35a 100644
--- a/drivers/media/platform/qcom/venus/core.c
+++ b/drivers/media/platform/qcom/venus/core.c
@@ -7,8 +7,10 @@
#include <linux/interconnect.h>
#include <linux/ioctl.h>
#include <linux/delay.h>
+#include <linux/devcoredump.h>
#include <linux/list.h>
#include <linux/module.h>
+#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
@@ -22,6 +24,32 @@
#include "firmware.h"
#include "pm_helpers.h"
+static void subsystem_dump(struct venus_core *core)
+{
+ struct device *dev;
+ phys_addr_t mem_phys;
+ size_t mem_size;
+ void *mem_va;
+ void *data;
+
+ dev = core->dev;
+ mem_phys = core->fw.mem_phys;
+ mem_size = core->fw.mem_size;
+
+ mem_va = memremap(mem_phys, mem_size, MEMREMAP_WC);
+ if (!mem_va)
+ return;
+
+ data = vmalloc(mem_size);
+ if (!data)
+ goto err_unmap;
+
+ memcpy(data, mem_va, mem_size);
+ dev_coredumpv(dev, data, mem_size, GFP_KERNEL);
+err_unmap:
+ memunmap(mem_va);
+}
+
static void venus_event_notify(struct venus_core *core, u32 event)
{
struct venus_inst *inst;
@@ -67,6 +95,8 @@ static void venus_sys_error_handler(struct work_struct *work)
venus_shutdown(core);
+ subsystem_dump(core);
+
pm_runtime_put_sync(core->dev);
while (core->pmdomains[0] && pm_runtime_active(core->pmdomains[0]))
diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h
index 842a294..8122f23 100644
--- a/drivers/media/platform/qcom/venus/core.h
+++ b/drivers/media/platform/qcom/venus/core.h
@@ -171,6 +171,8 @@ struct venus_core {
struct device *dev;
struct iommu_domain *iommu_domain;
size_t mapped_mem_size;
+ phys_addr_t mem_phys;
+ size_t mem_size;
} fw;
struct mutex lock;
struct list_head instances;
diff --git a/drivers/media/platform/qcom/venus/firmware.c b/drivers/media/platform/qcom/venus/firmware.c
index 9a9c097..f3d91d23 100644
--- a/drivers/media/platform/qcom/venus/firmware.c
+++ b/drivers/media/platform/qcom/venus/firmware.c
@@ -201,6 +201,9 @@ int venus_boot(struct venus_core *core)
return -EINVAL;
}
+ core->fw.mem_size = mem_size;
+ core->fw.mem_phys = mem_phys;
+
if (core->use_tz)
ret = qcom_scm_pas_auth_and_reset(VENUS_PAS_ID);
else
--
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