Commit Graph

511 Commits

Author SHA1 Message Date
Scott Long
8cc8aeb322 gpu: nvgpu: MISRA 21.15 fixes to mm code
MISRA Rule 21.15 prohibits use of memcpy() with incompatible ptrs
to qualified/unqualified types.

To circumvent this issue we've introduced a new MISRA-compliant
nvgpu_memcpy() function.

This change switches all offending uses of memcpy() in mm/*
over to use nvgpu_memcpy() with appropriate casts applied.

JIRA NVGPU-849

Change-Id: I17be87475fde62e969b014d4d0fa455dae5d4373
Signed-off-by: Scott Long <scottl@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1941257
Reviewed-by: Philip Elcan <pelcan@nvidia.com>
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
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2018-11-05 15:24:42 -08:00
Alex Waterman
40b50c059a gpu: nvgpu: Set pd_cache to NULL after it's freed
Clear the pointer to the non-existent pd_cache after the
pd_cache is freed. This is good practice and makes it easier
to verify that this function has accomplished its intended
purpose in the unit tests.

JIRA NVGPU-1323

Change-Id: I1e1c20344a385bc96b293f2007485e7f4d99f947
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1941535
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Scott Long <scottl@nvidia.com>
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2018-11-04 21:25:38 -08:00
Nicolas Benech
cb2a05dd92 gpu: nvgpu: Fix LibC MISRA 17.7 in common
MISRA Rule-17.7 requires the return value of all functions to be used.
Fix is either to use the return value or change the function to return
void. This patch contains fix for all 17.7 violations instandard C functions
in common code.

JIRA NVGPU-1036

Change-Id: Id6dea92df371e71b22b54cd7a521fc22812f9b69
Signed-off-by: Nicolas Benech <nbenech@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1929899
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2018-11-01 17:15:37 -07:00
Konsta Holtta
a971510737 gpu: nvgpu: add nvgpu_mem_rd32_pair
Sometimes longer 64-bit values are composed of pairs of low and high
parts in a same nvgpu_mem. Add a function to read the two and to do the
bit ops given the low and high word offsets.

Jira NVGPU-886

Change-Id: I4fe698d7c5a891ef5740ea0fb31549195e2e6c43
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1928206
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2018-10-30 15:35:16 -07:00
Alex Waterman
aee5511bc8 gpu: nvgpu: Update pd_cache to handle 64K pages
Update the PD cache code to handle 64KB pages. To do this the
number of partial/full lists is expanded for when we have 64K
pages. Currently we only explicitly support 4K and 64K page
sizes. Other pages sizes (16K for example) will fail compilation
during preprocessing.

This change also cleans up the definitions for some of the
internal structs. They have been moved into pd_cache.c since
they are not used outside of pd_cache.c.

This allows the following functions to be removed from the global
context:

  __nvgpu_pd_cache_alloc_direct()
  __nvgpu_pd_cache_free_direct()

They have been replaced by calls to nvgpu_pd_{alloc,free}().

The nvgpu_pd_mem_entry alloc_map also had to be expanded to a
real bitmap. 32 or 64 bits is not sufficient for packing 256
byte PDs into a 64K page (there's 256 PDs per nvgpu_pd_mem_entry
in that case). To prevent doing too many find_first_zero
operations on the bitmap an 'allocs' field was also added which
tracks how many allocs are done. We can use this instead of
comparing a mask against the bitmap to determine if an
nvgpu_pd_mem_entry is full.

Note: there's still a limitation with the TLB invalidate code:
it simply assumes an nvgpu_mem is a 1 to 1 with a PDB. This means
we can't invalidate a PDB allocated at an offset greater than 0
in a nvgpu_pd_mem_entry. This in turn means we must always use a
full page size for a context's PDB.

Bug 1977822

Change-Id: I6a7a3a95b7c902bc6487cba05fde58fbc4a25da5
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1718755
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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2018-10-29 21:56:59 -07:00
Adeel Raza
dc37ca4559 gpu: nvgpu: MISRA fixes for composite expressions
MISRA rules 10.6, 10.7, and 10.8 prevent mixing of types in composite
expressions. Resolve these violations by casting variables/constants to
the appropriate types.

Jira NVGPU-850
Jira NVGPU-853
Jira NVGPU-851

Change-Id: If6db312187211bc428cf465929082118565dacf4
Signed-off-by: Adeel Raza <araza@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1931156
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2018-10-25 11:13:38 -07:00
aalex
80d03f34f7 gpu: nvgpu: Fix IPA to PA translation
Background:
In Hypervisor mode dGPU device is configured in pass through mode for
the Guest (QNX/Linux). GMMU programming is handled by the guest which
converts a mapped buffer's GVA into SGLes in IPA (Intermediate/Guest
Physical address) which is then translated into PA (Acutual Physical
address) and programs the GMMU PTEes with correct GVA to PA mapping.
Incase of the vgpu this work is delegated to the RM server which takes care
of the GMMU programming and IPA to PA conversion.

Problem:
The current GMMU mapping logic in the guest assumes that PA range is
continuous over a given IPA range. Hence, it doesn't account for holes being
present in the PA range. But this is not the case, a continous IPA range
can be mapped to dis-contiguous PA ranges. In this situation the mapping
logic sets up GMMU PTEes ignoring the holes in physical memory and
creates GVA => PA mapping which intrudes into the PA ranges which are
reserved. This results in memory being corrupted.

This change takes into account holes being present in a given PA range and
for a  given IPA range it also identifies the discontiguous PA ranges and
sets up the PTE's appropriately.

Bug  200451447
Jira VQRM-5069

Change-Id: I354d984f6c44482e4576a173fce1e90ab52283ac
Signed-off-by: aalex <aalex@nvidia.com>
Signed-off-by: Antony Clince Alex <aalex@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1850972
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2018-10-24 23:16:20 -07:00
Amurthyreddy
f8ce19f879 gpu: nvgpu: MISRA 14.4 Function pointer as boolean
MISRA rule-14.4 doesn't allow the usage of function pointers & integer
types as booleans in the controlling expression of an if statement or
an iteration statement.

Fix violations where a function pointer or a function whose return
value is an integer, is used as a boolean in the controlling expression
of if and loop statements.

JIRA NVGPU-1021

Change-Id: Ic5336268394ba4396ce80744c25930d2fb44dc42
Signed-off-by: Amurthyreddy <amurthyreddy@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1932147
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2018-10-24 17:01:39 -07:00
Sagar Kamble
3030707936 gpu: nvgpu: init auto objects for MISRA 9.1
Address MISRA Rule 9.1 violation: The value of an object with automatic
storage duration shall not be read before it has been set.

JIRA NVGPU-881

Change-Id: I63fde303b0a3e05f16b9ce518684a37c774f0f43
Signed-off-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1929824
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2018-10-23 15:44:50 -07:00
Sagar Kamble
e67bb65025 gpu: nvgpu: update macro defines for MISRA 27.9
Address MISRA Rule 20.7 violation: Macro parameter expands into an
expression without being wrapped by parentheses.

Some of the exception the coverity is not able to catch are:
1. Macro parameters passed as parameter to another macro.
   i.e NVGPU_ACCESS_ONCE. Fixing these by additional parantheses.
2. Macro parameter used as type. i.e. type parameter in container_of.

While at it, update copyright date rage for list.h and types.h.

JIRA NVGPU-841

Change-Id: I4b793981d671069289720e8c041bad8125961c0c
Signed-off-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1929823
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
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2018-10-23 15:44:41 -07:00
Kyle Guo
69b46a6174 gpu: nvgpu: fix timeout check logic in sync-unmap
Fixed timeout checking flow in sync-unmap where timeout message could
be printed while there is not a timeout.

The original codeflow doesn't check refcount of a mapped_buffer again
after 10ms waiting. So if the buffer is released during the last
round of waiting, the timeout message will still be printed. The new
codeflow combines refcount and timeout checking. So that there won't
be an inconsistency between the two.

Bug 200434475

Change-Id: Id0a0aebcb24906a1ec7113e669227788e729564b
Signed-off-by: Kyle Guo <kyleg@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1930236
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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2018-10-21 12:56:01 -07:00
Nitin Kumbhar
dcb2a34200 gpu: nvgpu: fix circular dep of ce2 and gk20a headers
struct gk20a from gk20a.h needs defination of struct gk20a_ce_app
and ce2_gk20a.h needs defination of struct gk20a. This creates
a circular dependency.

Fix this by making gk20a_ce_app a pointer to skip knowing the
complete type details and using forward declarations for struct
gk20a_ce_app and struct gk20a.

The gk20a_ce_app pointer is alloc'ed in gk20a_init_ce_support()
and free'ed in gk20a_ce_destroy.

JIRA NVGPU-611

Change-Id: I4d62d5f2b2d1492db73bae69f90a1fe5586fba76
Signed-off-by: Nitin Kumbhar <nkumbhar@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1917945
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2018-10-12 17:35:11 +05:30
Amurthyreddy
c114b9e77e gpu: nvgpu: MISRA 14.4 err/ret/status as boolean
MISRA rule 14.4 doesn't allow the usage of integer types as booleans
in the controlling expression of an if statement or an iteration
statement

Fix violations where the integer variables err, ret, status are used
as booleans in the controlling expression of if and loop statements.

JIRA NVGPU-1019

Change-Id: Ia950828797b8eff4bc754269ea2d9fa272f59436
Signed-off-by: Amurthyreddy <amurthyreddy@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1919111
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Scott Long <scottl@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
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2018-10-12 17:35:11 +05:30
Alex Waterman
5c52444a42 gpu: nvgpu: Track num_user_mapped_buffers more clearly
This patch moves the increment and decrement of the user mapped
buffer count to the insert/remove mapped buffer functions since
this value should only ever change when these functions are called.

Bug 200105199

Change-Id: I5b0a86d00e9e948c48e313153a668eb2e10fca49
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1917791
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2018-10-12 17:35:11 +05:30
Nicolas Benech
ea0a0c8485 gpu: nvgpu: Fix all MISRA 17.7 violations in mm
MISRA Rule-17.7 requires the return value of all functions to be used.
Fix is either to use the return value or change the function to return
void. This patch contains fix for all 17.7 violations in MM code.

JIRA NVGPU-677

Change-Id: Iafcbe99050ba79e571107ccf9d2a89bbeb6239b1
Signed-off-by: Nicolas Benech <nbenech@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1847890
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
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2018-10-12 17:35:09 +05:30
Terje Bergstrom
2c298b8c21 gpu: nvgpu: Move FB reset to MC unit
FB reset is done by accessing MC register. Move the code to MC unit.

JIRA NVGPU-954

Change-Id: I1636887af805f016da5490af65e808f9ac015cde
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1823385
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2018-10-12 17:35:07 +05:30
Alex Waterman
966d1a08be gpu: nvgpu: Standardize HAS_SYNCPOINTs check
Nvgpu uses many ways to check if sync points are enabled. The four
ways used to be:

  platform->has_syncpoints
  g->has_syncpoints
  nvgpu_is_enabled(g, NVPGU_HAS_SYNCPOINTS)
  gk20a_platform_has_syncpoints()

This patch standardizes all usage to now be nvgpu_has_syncpoints()
which is based on gk20a_platform_has_syncpoints() - just renamed to
be general to nvgpu.

All usage of the other forms have now been consolidated. However,
under the hood nvgpu_has_syncpoints() does check the is_enabled
flag. This flag is now set where g->has_syncpoints used to be set
based on the platform data.

The basic dependency chain is this:

  nvgpu_has_syncpoints -> NVGPU_HAS_SYNCPOINTS ->
    platform->has_syncpoints

However, note: there are several places where syncpoints can be
disabled if some other driver initialization fails (for ex. host1x).
Also note that nvgpu_has_syncpoints() also considers a disable
variable set by debugfs.

Bug 2327574

Change-Id: Ia2375a80f5f2e27285e6175568dd13e6bb25fd33
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1803975
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2018-10-12 17:35:07 +05:30
Deepak Nibade
991179f29c gpu: nvgpu: increase bootstrap allocator size to 512M
Bootstrap size of 256M is insufficient on some platforms, hence
increase it to 512M

Bug 2402730
Bug 200448236

Change-Id: I5f67e76db0e37d2044f5fc3c27014d6fda853abd
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1845051
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
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2018-09-26 16:45:46 -07:00
Amurthyreddy
1a3d75790d gpu: nvgpu: QNX devg-nvrm crash fix.
Input paran VM Will be used to get PTE size for GVA spaces and it can be
NULL if buddy_allocator initialization is not for GVA space. As part of 
recent changes VM was being accessed for non GVA space case and for that
VM was NULL, causing the crash.

In this fix added a prior check and VM will be accessed only if input 
flag is set to GPU_ALLOC_GVA_SPACE.

Bug 200452730

Change-Id: I9dcb1f2bd5e639c37a7152b99453bb5b46fe4087
Signed-off-by: Amurthyreddy <amurthyreddy@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1842530
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Tested-by: Prateek Sethi <prsethi@nvidia.com>
Reviewed-by: Vaibhav Kachore <vkachore@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
2018-09-26 09:09:19 -07:00
Debarshi Dutta
421e64aad7 gpu: nvgpu: move header location of gk20a.h
Update header path of gk20a.h in files present in common/
to <nvgpu/gk20a.h>

Jira NVGPU-597

Change-Id: I3431dae93ada9bd561454c89a0b99c5292ab4a8d
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1832024
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2018-09-25 00:20:25 -07:00
smadhavan
75e59e4004 nvgpu: common: MISRA Rule 21.2 header guard fixes
MISRA rule 21.2 doesn't allow the use of macro names which start with
an underscore. These leading underscores are to be removed from the
macro names. This patch will fix such violations in common directory
by renaming them to follow the convention,
'NVGPU_PARENT-DIR_HEADER-NAME' when there is no keyword repetition
between file name and directory or 'NVGPU_HEADER-NAME' when there
is repetition.

JIRA NVGPU-1028

Change-Id: Idf10f6b179cfd96bfb8ab8e9e2bf79c26591905d
Signed-off-by: smadhavan <smadhavan@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1809086
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2018-09-24 21:17:39 -07:00
Deepak Nibade
b7b107c1a1 gpu: nvgpu: Add HALs to implement pdb cache WAR
We have a h/w bug on some chips and we need to support below additional
HALs to implement a s/w WAR
gops.fifo.init_pdb_cache_war()
gops.fifo.deinit_pdb_cache_war()
gops.fb.apply_pdb_cache_war()

Add new API nvgpu_init_mm_pdb_cache_war() to initialize WAR sequence
and call this from MM initialization and before setting up rest of the
memory management units
Deinitialize WAR while cleaning up MM support

Add pdb_cache_war_mem member to gk20a to hold all the memory needed
for the WAR

Bug 200449545

Change-Id: Id2ac0d940c7881c7b0cf396413273c0f329a1a1f
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1834901
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2018-09-24 10:15:14 -07:00
Mahantesh Kumbar
5d30a5cda3 gpu: nvgpu: ACR code refactor
-Created struct nvgpu_acr to hold acr module related member
 within single struct which are currently spread across multiple structs
 like nvgpu_pmu, pmu_ops & gk20a.
-Created struct hs_flcn_bl struct to hold ACR HS bootloader specific members
-Created struct hs_acr to hold ACR ucode specific members like bootloader data
 using struct hs_flcn_bl, acr type & falcon info on which ACR ucode need to run.
-Created acr ops under struct nvgpu_acr	to perform ACR specific operation,
 currently ACR ops were part PMU which caused to have always dependence
 on PMU even though ACR was not executing on PMU.
-Added acr_remove_support ops which will be called as part of
 gk20a_remove_support() method, earlier acr cleanup was part of
 pmu remove_support method.
-Created define for ACR types,
-Ops acr_sw_init() function helps to set ACR properties
 statically for chip currently in execution & assign ops to point to
 needed functions as per chip.
-Ops acr_sw_init execute at early as nvgpu_init_mm_support calls acr
 function to alloc blob space.
-Created ops to fill bootloader descriptor & to patch WPR info to ACR uocde
 based on interfaces used to bootstrap ACR ucode.
-Created function gm20b_bootstrap_hs_acr() function which is now common
 HAL for all chips to bootstrap ACR, earlier had 3 different function for
 gm20b/gp10b, gv11b & for all dgpu based on interface needed.
-Removed duplicate code for falcon engine wherever common falcon code can be used.
-Removed ACR code dependent on PMU & made changes to use from nvgpu_acr.

JIRA NVGPU-1148

Change-Id: I39951d2fc9a0bb7ee6057e0fa06da78045d47590
Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1813231
GVS: Gerrit_Virtual_Submit
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2018-09-24 08:11:49 -07:00
Richard Zhao
a4065effdc gpu: nvgpu: increase sync-unmap timeout to 100ms
- sync-unmap timeout was observed intermittently. so doubled the timeout
  value.
- also check ref count after last round of sleep. The polling could
  succeed during the last sleep.
- fix error print on timeout.

Bug 200434475

Change-Id: If821dfaca9b86873711f436645523dc49a5eba34
Signed-off-by: Richard Zhao <rizhao@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1828562
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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2018-09-21 11:22:20 -07:00
Alex Waterman
c1b66bc6a9 gpu: nvgpu: Fix some dma.[ch] MISRA violations
This doesn't correspond to a specific rule; it just cleans up
the violations introduced by http://git-master/r/1799807.

JIRA NVGPU-990

Change-Id: Ia20af754da9ad60f81d58ba00bf781a8c441827b
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1804887
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2018-09-20 15:14:47 -07:00
Amulya
941ac9a9d0 nvgpu: common: MISRA 10.1 boolean fixes
Fix violations where a variable of type non-boolean is used as a
boolean in gpu/nvgpu/common.

JIRA NVGPU-646

Change-Id: I9773d863b715f83ae1772b75d5373f77244bc8ca
Signed-off-by: Amulya <Amurthyreddy@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1807132
GVS: Gerrit_Virtual_Submit
Tested-by: Amulya Murthyreddy <amurthyreddy@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
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2018-09-19 03:24:12 -07:00
Alex Waterman
7405f69ae2 gpu: nvgpu: Fix MISRA 21.2 violations (pd_cache.c)
MISRA 21.2 states that we may not use reserved identifiers; since
all identifiers beginning with '_' are reserved by libc, the usage
of '__' as a prefix is disallowed.

Fixes for all the pd_cache functions that use '__' prefixes. This
was trivial: the '__' prefix was simply deleted.

JIRA NVGPU-1029

Change-Id: Ia91dabe3ef97fb17a2a85105935fb3a72d7c2c5e
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1813643
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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2018-09-12 17:48:28 -07:00
Alex Waterman
2c95becc9e gpu: nvgpu: Fix MISRA 21.2 violations (nvgpu_mem.c, mm.c)
MISRA 21.2 states that we may not use reserved identifiers; since
all identifiers beginning with '_' are reserved by libc, the usage
of '__' as a prefix is disallowed.

Handle the 21.2 fixes for nvgpu_mem.c and mm.c; this deletes the
'__' prefixes and slightly renames the __nvgpu_aperture_mask()
function since there's a coherent version and a general version.

Change-Id: Iee871ad90db3f2622f9099bd9992eb994e0fbf34
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1813623
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2018-09-12 17:48:24 -07:00
Alex Waterman
ba2a632f03 gpu: nvgpu: Fix MISRA 21.2 violations (buddy_allocator.c)
MISRA 21.2 states that we may not use reserved identifiers; since
all identifiers beginning with '_' are reserved by libc, the usage
of '__' as a prefix is disallowed.

Fixes for the buddy allocator. These are all pretty trivial; mostly
the '__' prefix is simply deleted since the functions are all static.
The one exception is the list accessors were also renamed slightly to
include a 'do' component to show more clearly that the other list
accessors are convenience functions.

JIRA NVGPU-1029

Change-Id: Ia39cdde9a81e740537fc9b4d70d87eadc12f8d4d
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1813601
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
GVS: Gerrit_Virtual_Submit
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2018-09-12 17:48:15 -07:00
Alex Waterman
338500c8e2 gpu: nvgpu: Fix MISRA 21.2 violations (public allocator APIs)
MISRA 21.2 states that we may not use reserved identifiers; since
all identifiers beginning with '_' are reserved by libc, the usage
of '__' as a prefix is disallowed.

This fixes places in the public allocator APIs. This consists of
the various init routines which are used to create an allocator
and the debug macro used within the allocator code.

The buddy allocator was handled by collapsing the internal
'__' prepended version with the non-prefixed version. The only
required change was in the page_allocator code which now had to
pass in a NULL vm pointer (since the VM is not needed for managing
VIDMEM).

JIRA NVGPU-1029

Change-Id: I484a144e61789bf594c525c1ca307b96d120830f
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1813578
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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2018-09-12 17:48:11 -07:00
Terje Bergstrom
c86f185d10 gpu: nvgpu: Move programming of debug page to FB
Debug page was allocated and programmed to HUB MMU in GR code. This
introduces a dependency from GR to FB and is anyway the wrong place.
Move the code to allocate memory to generic MM code, and the code
to program the addresses to FB.

Change-Id: Ib6d3c96efde6794cf5e8cd4c908525c85b57c233
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1801423
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
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2018-09-10 15:23:12 -07:00
Terje Bergstrom
83efad7adb gpu: nvgpu: Move FB size query to FB
Vidmem size query was in mm_xxx.c. It involves reading a register from
FB, so move the query to FB HAL.

JIRA NVGPU-1063

Change-Id: I30dfd2c4fdcdd6c841f85aaab7431d52473759bd
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1801425
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2018-09-10 15:23:08 -07:00
Alex Waterman
3cf92ec89b gpu: nvgpu: Fix several issues with the buddy allocator
The issues are:

1. Non-fixed allocs must take into account explicit PTE size
   requests. Previously the PTE size was determines from the
   allocation size which was incorect. To do this, the PTE size
   is now plumbed through all GPU VA allocations. This is what
   the new alloc_pte() op does.

2. Fix buddy PTE size assignment. This changes a '<=' into a
   '<' in the buddy allocation logic. Effectively this is now
   leaving the PTE size for buddy blocks equal to the PDE block
   size as 'ANY'.

   This prevents a buddy block of PDE size which has yet to be
   allocated from having a specific PDE size. Without this its
   possible to do a fixed alloc that fails unexpectedly due to
   mismatching PDE sizes.

   Consider two PDE block sized fixed allocs that are contained
   in one buddy twice the size of a PDE block. Let's call these
   fixed allocs S and B (small and big). Let's assume that two
   fixed allocs are done, each targeting S and B, in that order.
   With the current logic the first alloc, when we create the
   two buddies S and B, causes both S and B to have a PTE size of
   SMALL. Now when the second alloc happens we attempt to find
   a buddy B with a PTE size of either BIG or ANY. But we cannot
   becasue B already has size SMALL. This casues us to appear
   like we have a conflicting fixed alloc despite this not being
   the case.

3. Misc cleanups & bug fixes:
   - Clean up some MISRA issues
   - Delete an extraneous unlock that could have caused a
     deadlock.

Bug 200105199

Change-Id: Ib5447ec6705a5a289ac0cf3d5e90c79b5d67582d
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1768582
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2018-09-09 17:20:43 -07:00
Deepak Nibade
8e66c5816d gpu: nvgpu: make bootstrap allocations contiguous
We use bootstrap vidmem allocator for all the vidmem allocations that happen
boot time
And we need to program physical address for all the potential vidmem buffers
that we program into h/w and are needed during boot

So force the allocator to allocate contigous memory

We otherwise see a warning dump when we program physical address of memory which
is allocated in multiple pages

Bug 2180284
Jira NVGPUT-12

Change-Id: Ib9c2d42ea463bc424c2cb4da8ffd8ebae436e0f6
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1805467
Reviewed-by: Automatic_Commit_Validation_User
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Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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2018-09-06 16:12:20 -07:00
Deepak Nibade
577c69322e gpu: nvgpu: increase bootstrap vidmem carveout to 256M
We right now have a bootstrap carveout in vidmem of size 16M and having base
address at {total_vidmem_size - 256M}
So this design divides rest of the vidmem into two chunks

And the size of bootstrap carveout is also small and insufficient for vidmem
allocations during boot

Hence increase the bootstrap vidmem carevout to 256M and move it to the end
of entire vidmem

Rename the carevout name for wpr_co to bootstrap_co as it is more appropriate

Also update __nvgpu_vidmem_do_clear_all() to clear only one chunk of vidmem
instead of two

Bug 2180284
Jira NVGPUT-12

Change-Id: I9c8d62bcd705c7112385df3d4f714e0190b48e17
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1805466
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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2018-09-06 16:12:17 -07:00
Deepak Nibade
eb473aa0b1 gpu: nvgpu: fix crash with uninitialized comptag allocator
If gk20a_comptaglines_alloc() is called with an uninitialized comptag allocator
we right now see a kernel panic like this

[  445.097931] [<ffffff8008fdd650>] __mutex_lock_slowpath+0xe0/0x188
[  445.104275] [<ffffff8008fdd748>] mutex_lock+0x50/0x68
[  445.109773] [<ffffff80012ef340>] gk20a_comptaglines_alloc+0x30/0x98 [nvgpu]
[  445.117169] [<ffffff80012e0fdc>] gk20a_alloc_or_get_comptags+0xe4/0x140 [nvgpu]
[  445.124910] [<ffffff80012ee1cc>] nvgpu_vm_map+0x414/0x7b8 [nvgpu]
[  445.131433] [<ffffff80012dd754>] nvgpu_vm_map_linux+0x114/0x1e8 [nvgpu]
[  445.138475] [<ffffff80012dd978>] nvgpu_vm_map_buffer+0x150/0x238 [nvgpu]
[  445.145605] [<ffffff80012d2834>] gk20a_as_dev_ioctl+0x30c/0xa78 [nvgpu]
[  445.152473] [<ffffff8008262154>] do_vfs_ioctl+0xc4/0x8f8

Fix this by checking explicitly that comptag allocator is initialized in
gk20a_comptaglines_alloc() and gk20a_comptaglines_free()

Bug 2171567

Change-Id: Iaac6d77e40a8aaa01f2bacbe0cb54ec447100075
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1805170
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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2018-09-06 16:12:13 -07:00
Alex Waterman
2b2bde04e1 gpu: nvgpu: Fix MISRA 21.2 violations (page_allocator.c)
MISRA 21.2 states that we may not use reserved identifiers; since
all identifiers beginning with '_' are reserved by libc, the usage
of '__' as a prefix is disallowed.

This change fixes uses of '__' prepended to static functions defined
in page_allocator.c. Since these funcitons were static and had no
naming conflicts the '__' was simply removed. For free_pages() this
also needed to have a nvgpu specific prefix since free_pages()
conflicts with a Linux kernel function name.

JIRA NVGPU-1029

Change-Id: I8b96e55244bd2de166f7dcc64d2b30427757ea8f
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1812826
Reviewed-by: Vinod Gopalakrishnakurup <vinodg@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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2018-09-05 20:41:19 -07:00
Nicolas Benech
2eface802a gpu: nvgpu: Fix mutex MISRA 17.7 violations
MISRA Rule-17.7 requires the return value of all functions to be used.
Fix is either to use the return value or change the function to return
void. This patch contains fix for calls to nvgpu_mutex_init and
improves related error handling.

JIRA NVGPU-677

Change-Id: I609fa138520cc7ccfdd5aa0e7fd28c8ca0b3a21c
Signed-off-by: Nicolas Benech <nbenech@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1805598
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Alex Waterman <alexw@nvidia.com>
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2018-09-05 20:39:08 -07:00
Alex Waterman
b44c7fdb11 gpu: nvgpu: Move common DMA code to common/mm
This migrates the common DMA code (os agnostic) to the
common directory. This new unit will be the common DMA
allocator that lets users allocate SYSMEM, VIDMEM, or
either. Other units will be responsible for actually
handling the mechanics of allocating VIDMEM or SYSMEM.

Also update the names of the DMA related files so that
tmake doesn't complain about duplicate C file names. To
do this call the common DMA file dma.c and prepend the
OS to the other DMA files. So now we have:

  common/mm/dma.c
  os/posix/posix-dma.c
  os/linux/linux-dma.c

JIRA NVGPU-990

Change-Id: I22d2d41803ad89be7d9c28f87864ce4fedf10836
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1799807
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2018-09-05 20:38:42 -07:00
Konsta Holtta
97aa9f705a gpu: nvgpu: fix bad error code in gmmu map
__nvgpu_gmmu_map() does not currently have a mechanism for returning an
error code if something goes wrong; it just returns zero on error, or a
nonzero address when mapping was successful. Change it to return 0
instead of -ENOMEM if the creation of nvgpu_sgt from mem fails. Out of
memory is the only meaningful failure case anyway, and this -ENOMEM
would just look like a (huge) memory address.

Change-Id: If176e165b1f9a8fa84a1bdf3080c9059a193081f
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1812491
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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2018-09-04 16:17:22 -07:00
Sai Nikhil
2f97e683fe gpu: nvgpu: common: fix MISRA Rule 10.4
MISRA Rule 10.4 only allows the usage of arithmetic operations on
operands of the same essential type category.

Adding "U" at the end of the integer literals to have same type of
operands when an arithmetic operation is performed.

This fix violations where an arithmetic operation is performed on
signed and unsigned int types.

In balloc_get_order_list() the argument "int order" has been changed to
a u64 because all callers of this function pass a u64 argument.

JIRA NVGPU-992

Change-Id: Ie2964f9f1dfb2865a9bd6e6cdd65e7cda6c1f638
Signed-off-by: Sai Nikhil <snikhil@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1784419
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
Reviewed-by: Adeel Raza <araza@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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2018-08-29 08:59:31 -07:00
Konsta Holtta
3bd47da095 gpu: nvgpu: add missing timer includes
Many files used declarations from timers.h implicitly via another header
file(s). Add several #includes explicitly to their users.

Jira NVGPU-967

Change-Id: I88b515061db87c69bd85e3655b74d0271a80d9bf
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1804611
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2018-08-24 14:57:57 -07:00
Konsta Holtta
390185200f gpu: nvgpu: clean up channel header includes
Remove a few unnecessary includes from channel_gk20a.h and add them to c
files where needed.

Jira NVGPU-967

Change-Id: Ic38132c776a56b6966424806faab7871575b6c10
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1804609
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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2018-08-24 14:57:44 -07:00
Alex Waterman
d5473e225d gpu: nvgpu: Fix MISRA 21.2 violations [3/3]
MISRA 21.2 states that we may not use reserved identifiers; since
all identifiers beginning with '_' are reserved by libc, the usage
of '__' as a prefix is disallowed.

This change removes the usage of the '__a' argument scattered
throughout the nvgpu allocator code.

JIRA NVGPU-1029

Change-Id: I553a66a3d7d2c6bb21ba0a45e29a1d01f7b89f49
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1803353
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Adeel Raza <araza@nvidia.com>
GVS: Gerrit_Virtual_Submit
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2018-08-22 17:33:39 -07:00
Alex Waterman
a75becab20 gpu: nvgpu: Fix MISRA 21.2 violations [2/3]
MISRA 21.2 states that we may not use reserved identifiers; since
all identifiers beginning with '_' are reserved by libc, the usage
of '__' as a prefix is disallowed.

This change removes the usage of the '__a' argument scattered
throughout the nvgpu allocator code.

JIRA NVGPU-1029

Change-Id: Ic39213ab800e92c6815ce5b9deb22520aa6d0630
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1803352
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2018-08-22 17:33:35 -07:00
Alex Waterman
54b11a456c gpu: nvgpu: Fix MISRA 21.2 violations [1/3]
MISRA 21.2 states that we may not use reserved identifiers; since
all identifiers beginning with '_' are reserved by libc, the usage
of '__' as a prefix is disallowed.

This change removes the usage of the '__a' argument scattered
throughout the nvgpu allocator code.

JIRA NVGPU-1029

Change-Id: I5a9b8a3e0602ba4d519ca19080951402b6f3287d
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1803351
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2018-08-22 17:33:26 -07:00
Amulya
1c13da1d29 gpu: nvgpu: Changed enum gmmu_pgsz_gk20a into macros
Changed the enum gmmu_pgsz_gk20a into macros and changed all the
instances of it.

The enum gmmu_pgsz_gk20a was being used in for loops, where it was
compared with an integer. This violates MISRA rule 10.4, which only
allows arithmetic operations on operands of the same essential type
category. Changing this enum into macro will fix this violation.

JIRA NVGPU-993

Change-Id: I6f18b08bc7548093d99e8229378415bcdec749e3
Signed-off-by: Amulya <Amurthyreddy@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1795593
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2018-08-22 17:31:33 -07:00
Alex Waterman
652da81169 gpu: nvgpu: Force the PMU VM to use 128K large pages (gm20b)
Add a WAR for gm20b that allows us to force the PMU VM to use
128K large pages. For some reason setting the small page size
to 64K breaks the PMU boot. Unclear why. Bug needs to be filed
and fixed. Once fixed this patch can and should be reverted.

Bug 200105199

Change-Id: I2b4c9e214e2a6dff33bea18bd2359c33364ba03f
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1782769
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2018-08-21 15:44:02 -07:00
Amulya
da43fc5560 gpu: nvgpu: MISRA 10.3-Conversions to/from an enum
Fix violations where the conversion is from a non-enum type to enum
type or vice-versa.

JIRA NVGPU-659

Change-Id: I45f43c907b810cc86b2a4480809d0c6757ed3486
Signed-off-by: Amulya <Amurthyreddy@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1802322
GVS: Gerrit_Virtual_Submit
Tested-by: Amulya Murthyreddy <amurthyreddy@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: Adeel Raza <araza@nvidia.com>
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2018-08-21 14:54:51 -07:00
Sai Nikhil
05f45bcfc3 gpu: nvgpu: MISRA 10.3 Conversions to/from char
MISRA Rule 10.3 states that the value of an expression shall not be
assigned to an object with a narrower essential type or of a
different essential type category.

We have cases where we are converting to/from char and non char types
and this fix 10.3 violations resulting from these conversions.

This also fix violations in conversions between s8 and non-s8 types
as s8 can be typedefed as char.

Jira NVGPU-1010

Change-Id: I150dd633eb7575de9ea2bedd598b7af74d1fcbd9
Signed-off-by: Sai Nikhil <snikhil@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1801613
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: Adeel Raza <araza@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
2018-08-21 14:54:27 -07:00