To finish OS unification of the submit path, move the
gk20a_submit_channel_gpfifo* functions to a file that's accessible also
outside Linux code.
Also change the prefix of the submit functions from gk20a_ to nvgpu_.
Jira NVGPU-705
Change-Id: I8ca355d1eb69771fb016c7a21fc7f102ca7967d7
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1760421
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
In gk20a_submit_channel_gpfifo the gpfifo entries can come from a kernel
buffer or from userspace. To simplify the logic in
gk20a_submit_append_gpfifo, extract out a function that copies the
entries directly from userspace to the gpu memory for performance, and
another function that copies from a kernel buffer to the gpu memory. The
latter is used for kernel submits and when the gpfifo pipe exists which
would mean that the gpfifo memory is in vidmem and is thus not directly
accessible with a kernel virtual pointer.
While this function is being changed a lot, also rename it to start with
nvgpu_ instead of gk20a_.
Additionally, simplify pushbuffer debug tracing by always using the
kernel memory for the prints. Tracing when the gpfifo memory has been
allocated in vidmem is no longer supported; sysmem is almost always used
in practice anyway.
Jira NVGPU-705
Change-Id: Icab843a379a75fb46054dee157a0a54ff9fbba59
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1730481
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
The biggest remaining Linuxism in the submit path is the
copy_from_user() calls for reading the gpfifo entries to the HW-visible
buffer. Abstract away the copy of one such segment starting at some
offset and keep the wraparound logic and vidmem proxy in the core submit
path.
Jira NVGPU-705
Change-Id: I0c6438045c695e5e3f5da4fbc0c92d2c6e7f32cb
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1730480
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
gk20a_submit_channel_gpfifo() supports reading the gpfifo entries from
either a kernel buffer or an userspace buffer in an ioctl. Add two
separate entry points: one for the ioctl and another for any other
kernel use. This shortens the function prototypes and simplifies and
clarifies the call sites slightly.
Jira NVGPU-705
Change-Id: If5141a459261a451f78cc50972f4c94d95ba44d1
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1730479
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Add an OS-abstracted API for printing the name of the current process
into a log message and convert the single occurrence of current->comm in
submit path power failure to use it.
Jira NVGPU-705
Change-Id: I1a509dcc5aecc3c89ce4582733888081b3e38f1f
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1749833
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
