On 12/14/20 3:03 PM, Dikshita Agarwal wrote:
> Add support to dump video FW region during FW crash
> using devcoredump helpers.
>
> Major changes since v1:
> - update the name of function (Stephen)
> - store start address and size in resource structure during
> probe and reuse while dumping (Stephen, Stanimir)
The changes should go to ...
>
> Signed-off-by: Dikshita Agarwal <diksh...@codeaurora.org>
> Reviewed-by: Stephen Boyd <swb...@chromium.org>
> ---
... here
> drivers/media/platform/qcom/venus/core.c | 31
> ++++++++++++++++++++++++++++
> drivers/media/platform/qcom/venus/core.h | 2 ++
> drivers/media/platform/qcom/venus/firmware.c | 3 +++
> 3 files changed, 36 insertions(+)
>
> diff --git a/drivers/media/platform/qcom/venus/core.c
> b/drivers/media/platform/qcom/venus/core.c
> index bdd293f..2ddbd36 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>
drop this leftover.
> #include <linux/of_device.h>
> #include <linux/platform_device.h>
> #include <linux/slab.h>
> @@ -22,6 +24,33 @@
> #include "firmware.h"
> #include "pm_helpers.h"
>
> +static void venus_coredump(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) {
> + memunmap(mem_va);
> + return;
> + }
> +
> + memcpy(data, mem_va, mem_size);
> + memunmap(mem_va);
> + dev_coredumpv(dev, data, mem_size, GFP_KERNEL);
> +}
> +
> static void venus_event_notify(struct venus_core *core, u32 event)
> {
> struct venus_inst *inst;
> @@ -67,6 +96,8 @@ static void venus_sys_error_handler(struct work_struct
> *work)
>
> venus_shutdown(core);
>
> + venus_coredump(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 3a477fc..b37de95 100644
> --- a/drivers/media/platform/qcom/venus/core.h
> +++ b/drivers/media/platform/qcom/venus/core.h
> @@ -178,6 +178,8 @@ 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 d03e2dd..89defc2 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
>
With those fixes:
Reviewed-by: Stanimir Varbanov <stanimir.varba...@linaro.org>
--
regards,
Stan
