Here, the freq_counter is set to track the count of number of
frequencies enumerated and capped by GP10B_MAX_SUPPORTED_FREQS.
There is an early terminating condition when new_rate equals max_rate.
The line following this is set to
WARN_ON(freq_counter == GP10B_MAX_SUPPORTED_FREQS);
This line is probably incorrect and contradicts the above loop as in
there is definite probability of freq_counter equaling
GP10B_MAX_SUPPORTED_FREQS. Probably the original intention might have
been to catch an off-by-1 error where freq_counter equals
GP10B_MAX_SUPPORTED_FREQS + 1.
Even then instead of printing a warning message, a better idea is to
handle the possible bug in the code itself.
Bug 3407276
Change-Id: I7f2a9d5c41be62227d08045e959e16c4228fbff4
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2623380
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GVS: Gerrit_Virtual_Submit
Allocator (bitmap, buddy, page) debugfs files are not cleaned up when
the allocators are destroyed. This leads to warning logs from nvgpu
like below:
[21073.493000] debugfs: File 'gk20a_as_17' in directory 'allocators' already present!
[21073.493026] debugfs: File 'gk20a_as_17-sys' in directory 'allocators' already present!
Remove the per-allocator debugfs node when destroying an allocator in
runtime.
While at this, add missing nvgpu_allocator locking to the function
nvgpu_bitmap_alloc_destroy. And create nop functions for the
functions nvgpu_init_alloc_debug and nvgpu_fini_alloc_debug
when CONFIG_DEBUG_FS is not defined to avoid adding the
CONFIG checks at multiple places.
Move gk20a_debug_deinit to the end of gk20a_free_cb called in nvgpu_put
as that tears down all debugfs entries. Allocator destroy happens as
part of nvgpu_put call and it can lead to invalid debugfs dentry
access if gk20a_debug_deinit is called before it.
Bug 3481097
Change-Id: I8a66bcf6ade7e5707f9207c78a54d12d7bd94c02
Signed-off-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2648012
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To support nvmap as OOT module in kstable it implemented the APIs
nvmap_dma_alloc_attrs and nvmap_dma_free_attrs to replace usage
of kernel dma_alloc_attrs and dma_free_attrs. nvmap APIs have
special handling for VPR carveout.
Use those exported APIs in nvgpu when CONFIG_NVGPU_NVMAP_NEXT is
defined. This config will be defined only for kstable builds.
JIRA LS-458
Bug 200754700
Change-Id: I717aa579d29ee10c006b044f6b0fafbedc57dba8
Signed-off-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2647951
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GVS: Gerrit_Virtual_Submit
VPR functionality is split up as static VPR and VPR resize. Static VPR
is supported on all kernels. VPR resize is enabled only on 4.9 kernel.
Enable CONFIG_NVGPU_VPR unconditionally in Linux Makefile. Compile
VPR resize related functionality in nvgpu under the check for
Linux kernel version using new define NVGPU_VPR_RESIZE_SUPPORTED.
JIRA LS-458
Bug 200754700
Change-Id: Ib92f7f1b95afc6c69fbdf33354459c147337350c
Signed-off-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2647619
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Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
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GVS: Gerrit_Virtual_Submit
This patch performs the following improvements for VAB:
1) It avoids an infinite loop when collecting VAB information.
Previously, nvgpu incorrectly assumed that the valid bit would
be eventually set for the checker when polling. It may not be set
if a VAB-related fault has occurred.
2) It handles the VAB_ERROR mmu fault which may be caused for various
reasons: invalid vab buffer address, tracking in protected mode,
etc. The recovery sequence is to set the vab buffer size to 0 and
then to the original size. This clears the VAB_ERROR bit. After
reseting, the old register values are again set in the recovery
code sequence.
3) Use correct number of VAB buffers. There's only one VAB buffer on
ga10b, not two.
4) Simplify logic.
Bug 3374805
Bug 3465734
Bug 3473147
Change-Id: I716f460ef37cb848ddc56a64c6f83024c4bb9811
Signed-off-by: Martin Radev <mradev@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2621290
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- Make the domain scheduler timeslice type nanoseconds to future proof
the interface
- Return -ENOSYS from ioctls if the nvs code is not initialized
- Return the number of domains also when user supplied array is present
- Use domain id instead of name for TSG binding
- Improve documentation in the uapi headers
- Verify that reserved fields are zeroed
- Extend some internal logging
- Release the sched mutex on alloc error
- Add file mode checks in the nvs ioctls. The create and remove ioctls
require writable file permissions, while the query does not; this
allows filesystem based access control on domain management on the
single dev node.
Jira NVGPU-6788
Change-Id: I668eb5972a0ed1073e84a4ae30e3069bf0b59e16
Signed-off-by: Konsta Hölttä <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2639017
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GVS: Gerrit_Virtual_Submit
Move away from the prototype call in channel wdt worker and create a
separate worker thread for the domain scheduler. The details of runlist
domains are still encapsulated in the runlist code; the domain scheduler
controls when to switch domains. Switching happens based on domain
timeslices or when the current domain is deleted.
The worker thread is paused on railgate and spun back on poweron. The
scheduler data was also left dangling, so fix that by deinitializing all
nvs-related when gk20a_remove_support() is called. The runlist domains
already get freed as part of fifo removal.
Jira NVGPU-6427
Change-Id: I64f42498f8789448d9becdd209b7878ef0fdb124
Signed-off-by: Konsta Hölttä <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2632579
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The GSP stress test debug node only checks for gpu poweron and continues
to trigger the stress test if power is on. This results in a small
window where the GPU might get railgated, so call gk20a_busy() to hold a
power ref while loading or starting the stress test (which touches HW).
Change-Id: I2ced45472cd0602da36f1801e56b486097ece83d
Signed-off-by: Konsta Hölttä <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2635604
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: Dinesh T <dt@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
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GVS: Gerrit_Virtual_Submit
Add ioctls for creating, removing and querying scheduling domains and
interface with the "nvsched" entity that will be the core scheduler.
Include the scheduler in the Linux build.
The core scheduler code will ultimately hold data on and control what
gets scheduled, but this intermediate layer in nvgpu-rm needs a bit of
bookeeping to manage the userspace interface.
To keep changes isolated, this does not touch the internal runlist
domains yet. The core scheduler logic will eventually control the
runlist domains.
Jira NVGPU-6788
Change-Id: I7b4064edb6205acbac2d8c593dad019d517243ce
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Signed-off-by: Konsta Hölttä <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2463625
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tpc_pg_mask_read: function returns the value stored in the
tpc_pg_mask node. Since, it does not have the terminator it
returns garbage value after the mask value and gets troublesome
to parse in the userspace. Fix is to add '\n' at the end of the
mask value to be consistent with the earlier releases.
tpc_pg_mask_store: In this function there is a call to check if
gpu is powered on or not. In case when gpu is powered on, the return
value is just assigned to the 'err' variable which is never
returned to notify the application to follow the next steps. Thus,
need to return this value and inform the same to the userspace.
Bug 3445617
Change-Id: Ibb6fed88c83c751a5fb73181089274aa27c3f18b
Signed-off-by: Ninad Malwade <nmalwade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2630925
Reviewed-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
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GVS: Gerrit_Virtual_Submit
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User fence syncpt_id in the buffer compbits state was set to 0
on allocation through PREPARE_COMPRESSIBLE_READ ioctl or
MARK_COMPRESSIBLE_WRITE ioctl.
In case NVGPU_GPU_COMPBITS_GPU is requested through the ioctl
PREPARE_COMPRESSIBLE_READ, CDE conversion command is not
submitted and the output fence is cloned from the initial
state fence (with syncpt_id=0).
NvRmSyncWait on this fence from userspace lead to below error:
13e40000.host1x: nvhost_syncpt_wait_timeout: invalid syncpoint id 0
Initialize the buffer compbits state user fence syncpt_id to
NVGPU_INVALID_SYNCPT_ID with nvgpu_user_sync_init() so that
the userspace skips the NvRmSyncWait on that fence.
While at it, initialize other uninitialized members, valid_compbits
and zbc_color.
Bug 3360675
Change-Id: Ie2a584546e1ed37841cbdc3472b598794f911e6f
Signed-off-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2631235
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
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GVS: Gerrit_Virtual_Submit
SW Profiler's debugfs entry "enable" has both RW permissions set
however the corresponding read operation is set to NULL.
Similarly, the other entries i.e. "percentiles", "raw_entries" and
"basic_stats" only have a read operation defined and write is set to
NULL.
To enable correct permissions, set permission for "enable" to "W"
and set permissions for others as "R" only.
Bug 200747304
Change-Id: I296a0ff08a871f752988c9b0a671c080695d5eab
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2566322
(cherry picked from commit 8542dd388da536ee693610acd0bb3a679ff52881)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2628035
Tested-by: Jonathan Hunter <jonathanh@nvidia.com>
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GVS: Gerrit_Virtual_Submit
On production boards, there is requirement to disable GPU
profiler and debugger support. Add DT property 'support-gpu-tools'
which can be modified to enable/disable debugger/profiler support.
The default behavior is to enable the debugging features and set
'support-gpu-tools' to 1. This property is chosen to be u32 value
to be in sync with GPU vserser property by same name.
The debugger/profiler support is disabled by skipping the creation
of below nodes under /dev/nvgpu/:
1. ctxsw
2. dbg
3. prof
4. prof-dev
5. prof-ctx
Bug 200773450
JIRA NVGPU-7109
Change-Id: I86d72d17fa7f5492e117a4c1cd1144623e9b6132
Signed-off-by: Tejal Kudav <tkudav@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2592012
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
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GVS: Gerrit_Virtual_Submit
This patch adds two new debug nodes:
- cbc_status to retrieve cbc state information
- cbc_ctrl to flush and mmap cbc
These two nodes are to be used for purpose of testing
and debugging. One immediate goal is to use them for
verifying if CBC is programmed correctly via a user
space test.
Bug 3402817
Change-Id: I4046fb45ebfb48cb4644f88621429e1e323972c0
Signed-off-by: Martin Radev <mradev@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2620184
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
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GVS: Gerrit_Virtual_Submit
Make ga10b_init_nvlink_soc_credits OS agnostic by replacing OS
specific functions with corresponding nvgpu wrappers. This function is now
assigned to gops.mssnvlink.init_soc_credits HAL.
Introduce nvgpu wrapper, nvgpu_io_map/unmap to map/unmap specified
physical address range.
Jira NVGPU-6641
Change-Id: I337bc75b8ec36552fe471bf5e42f62c19f67ed4a
Signed-off-by: Antony Clince Alex <aalex@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2618237
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Earlier, buffer metadata support was made dependent on compression.
However that is not required.
Update the enabled flag NVGPU_SUPPORT_BUFFER_METADATA setup for
various hals. Enable it for all from linux characteristics init.
Update REGISTER_BUFFER and GET_BUFFER_INFO ioctls to seggregate
the compile/runtime compression functionality.
If compression is disabled, return error in case comptags are
required else don't fail the REGISTER_BUFFER ioctl.
Bug 200767700
Change-Id: I3850ccc879f180c97b830fb3d652c094b9d28a5b
Signed-off-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2614378
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Building NVGPU against the current upstream mainline kernel is failing
and errors such as the following are seen.
ERROR: modpost: module nvgpu uses symbol dma_buf_map_attachment from
namespace DMA_BUF, but does not import it.
ERROR: modpost: module nvgpu uses symbol dma_buf_detach from namespace
DMA_BUF, but does not import it.
ERROR: modpost: module nvgpu uses symbol dma_buf_vmap from namespace
DMA_BUF, but does not import it.
Following upstream commit 16b0314aa746 ("dma-buf: move dma-buf symbols
into the DMA_BUF module namespace"), it is now necessary to import the
DMA_BUF module namespace into the NVGPU driver to fix this.
Change-Id: I901b74cea692a5e0d66a190d01fe74a55aaf4431
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2621641
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Reviewed-by: Sagar Kamble <skamble@nvidia.com>
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GVS: Gerrit_Virtual_Submit
Below error notifier message is not really warning/error as that
is user triggered reset and the notifier value set is already
consumed by userspace hence limit this message to INFO type.
nvgpu: 17000000.gp10b nvgpu_set_err_notifier_locked:142 [ERR] error notifier set to 43 for ch 460
Bug 3344409
Change-Id: Ia41cc85f30111ef72994f3ce8e5113e881c06b1b
Signed-off-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2620974
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GVS: Gerrit_Virtual_Submit
Move the active_channels and active_tsgs bitmaps from struct
nvgpu_runlist to struct nvgpu_runlist_domain. A TSG and its channels are
currently active as part of a runlist; in the future, a runlist may be
switched from multiple domains that each are a collection of TSGs.
The changes are still internal to the runlist code. Users of runlists
need no modifications.
Jira NVGPU-6425
Change-Id: I2d0e98e97f04b9716bc3f4890cf881735d0ab664
Signed-off-by: Konsta Hölttä <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2618387
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As part of the function gp10b_clk_get_freqs, the code walksthrough
the H/W frequency table and populates the gp10b_freq_table by picking
only GP10B_NUM_SUPPORTED_FREQS =
GP10B_MAX_SUPPORTED_FREQS/GP10B_FREQ_SELECT_STEP frequencies at max.
The access-out-of-bounds happen when sel_freq_count reaches
GP10B_NUM_SUPPORTED_FREQS and new_rate equals max_rate, resulting
in one additional update that is beyond the size of gp10b_freq_table
table.
Also, removed the warning as it will never be true.
Bug 3407276
Change-Id: Ic496ccdda1784130e7139bd93d068be58eb60a35
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2617850
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GVS: Gerrit_Virtual_Submit
nvgpu_timeout_init() returns an error code only when the flags parameter
is invalid. There are very few possible values for flags, so extract the
two most common cases - cpu clock based and a retry based timeout - to
functions that cannot fail and thus return nothing. Adjust all callers
to use those, simplfying error handling quite a bit.
Change-Id: I985fe7fa988ebbae25601d15cf57fd48eda0c677
Signed-off-by: Konsta Hölttä <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2613833
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The implementation already exists. This change
adds NVGPU_GR_ZBC_TYPE_STENCIL and plumbs through
the stencil value from NvRmGpuDeviceZbcAddStencil
through NVGPU_GPU_IOCTL_ZBC_SET_TABLE.
Adds cases for querying the stencil values,
enabling NvRmGpuDeviceZbcGetStencilTableEntry.
Bug 3403523
Bug 3395601
Change-Id: I42c9a2967d0433e0bb08343aabeff0fe465f231e
Signed-off-by: Pyarelal Knowles <pknowles@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2554963
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GPU HW expects physically contiguous addresses when clearing
the compression bit store in memory. Currently on hypervisor setup,
the DMA_ATTR_FORCE_CONTIGUOUS flag ensures contiguous IPA, but it
is not possible to ensure contiguous physical memory.Disable
compression on virtualized environments until physically contiguous
memory is feasible.
Buffer Metadata support is dependent on compression support.
Move the initialization of NVGPU_SUPPORT_BUFFER_METADATA flag to
common code where NVGPU_SUPPORT_COMPRESSION is initialized.
Bug 200780546
Change-Id: Id94bffc878e275a80948880f0475162d0bb4ddae
Signed-off-by: Tejal Kudav <tkudav@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2607830
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When error (negative value) with int type is returned from read/write
fops (gk20a_power_node_ops) is read as ssize_t value as expected in
userspace it will be seen as large non-negative number and will
suppress the error.
Make return type for these fops ssize_t.
Also include power_ops.h in power_ops.c. This would have caught the
type mismatch issue.
Bug 3388725
Change-Id: Ie66b0178b31a1b7d147b4f441884bbba3bd2e4d8
Signed-off-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2604342
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String parameter to kstrtouint has to be null terminated.
If the input string to gk20a_power_write doesn't have the
terminating null character then gk20a_power_write passed
string without appending null character to kstrtouint.
Fix this by preparing string to occupy null character in
the end after user supplied string characters.
Bug 3388725
Change-Id: I521f879326908e296dd9a32b5781db490d40bdd2
Signed-off-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2603985
Reviewed-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-by: Martin Radev <mradev@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
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GVS: Gerrit_Virtual_Submit
Introduce nvgpu_gmmu_map_partial() to map a specific size of a buffer
represented by nvgpu_mem, or what nvgpu_gmmu_map() used to do. Delete
the size parameter from nvgpu_gmmu_map() such that it now maps the
entire buffer. The separate size parameter is a historical artifact from
when nvgpu_mem did not exist yet; the typical use is to map the entire
buffer.
Mapping at a certain address with nvgpu_gmmu_map_fixed() still takes the
size parameter.
The returned address still has to be stored somewhere, typically to
mem.gpu_va by the caller so that the matching unmap variant finds the
right address.
Change-Id: I7d67a0b15d741c6bcee1aecff1678e3216cc28d2
Signed-off-by: Konsta Hölttä <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2601788
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GVS: Gerrit_Virtual_Submit
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