| Message ID | 20230228-topic-venus-v2-6-d95d14949c79@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | Venus QoL / maintainability fixes | expand |
On 5/6/2023 12:54 AM, Konrad Dybcio wrote: > > > On 5.05.2023 15:00, Vikash Garodia wrote: >> >> On 5/5/2023 6:27 PM, Vikash Garodia wrote: >>> >>> On 5/4/2023 1:31 PM, Konrad Dybcio wrote: >>>> Leave a clue about where the seemingly magic values come from, as it >>>> is not obvious and requires some digging downstream.. >> Rephrase the commit text. > Please be more specific, do you want me to use the > explanations you gave in the previous reply? Something which describes the patch like - Add comments to describe the arguments of the qcom_scm_mem_protect_video_var TZ call. The TZ call programs the video hardware with CP and non-CP VARs, and the comments describes these VARs. > Konrad >>>> Reviewed-by: Dikshita Agarwal <quic_dikshita@quicinc.com> >>>> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> >>> Reviewed-by: Vikash Garodia <quic_vgarodia@quicinc.com> >>>> --- >>>> drivers/media/platform/qcom/venus/firmware.c | 7 +++++++ >>>> 1 file changed, 7 insertions(+) >>>> >>>> diff --git a/drivers/media/platform/qcom/venus/firmware.c b/drivers/media/platform/qcom/venus/firmware.c >>>> index cfb11c551167..a4cd919e1dbe 100644 >>>> --- a/drivers/media/platform/qcom/venus/firmware.c >>>> +++ b/drivers/media/platform/qcom/venus/firmware.c >>>> @@ -241,6 +241,13 @@ int venus_boot(struct venus_core *core) >>>> return ret; >>>> if (core->use_tz && res->cp_size) { >>>> + /* >>>> + * Clues for porting using downstream data: >>>> + * cp_start = 0 >>>> + * cp_size = venus_ns/virtual-addr-pool[0] (yes, addr not size) >>> >>> The field is the start address of ns context bank. Since the cp_start is 0, the start address for (next) non-secure context bank >>> >>> is interpreted as size of the (previous) content protection region. >>> >>>> + * cp_nonpixel_start = venus_sec_non_pixel/virtual-addr-pool[0] >>>> + * cp_nonpixel_size = venus_sec_non_pixel/virtual-addr-pool[1] >>>> + */ >>>> ret = qcom_scm_mem_protect_video_var(res->cp_start, >>>> res->cp_size, >>>> res->cp_nonpixel_start, >>>>
diff --git a/drivers/media/platform/qcom/venus/firmware.c b/drivers/media/platform/qcom/venus/firmware.c index cfb11c551167..a4cd919e1dbe 100644 --- a/drivers/media/platform/qcom/venus/firmware.c +++ b/drivers/media/platform/qcom/venus/firmware.c @@ -241,6 +241,13 @@ int venus_boot(struct venus_core *core) return ret; if (core->use_tz && res->cp_size) { + /* + * Clues for porting using downstream data: + * cp_start = 0 + * cp_size = venus_ns/virtual-addr-pool[0] (yes, addr not size) + * cp_nonpixel_start = venus_sec_non_pixel/virtual-addr-pool[0] + * cp_nonpixel_size = venus_sec_non_pixel/virtual-addr-pool[1] + */ ret = qcom_scm_mem_protect_video_var(res->cp_start, res->cp_size, res->cp_nonpixel_start,