When reviewing some VM mapping code I found the name of the function
that actually maps the passed buffer to be confusing. It was:
nvgpu_vm_map_compression_comptags()
This function does actually do the map and work out some comptags
related stuff. But I think this would be easier to read in the code
as:
nvgpu_vm_do_map()
As this is much more literally what the function is actually doing.
Change-Id: I9a945b198887f5fb23b8be622c8411f97358dbed
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2220339
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There are 2 instances where some code is unreachable in vm.c
- The nvgpu_insert_mapped_buf function always returned 0, so any
associated error handling was unreachable. This patch changes
the function to return void instead.
- A cleanup section to unmap a buffer in case of error was also
unreachable.
JIRA NVGPU-909
Change-Id: I6d8343b2994d314992a61dd640b10e68fbbc5e1e
Signed-off-by: Nicolas Benech <nbenech@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2217677
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Reviewed-by: Shashank Singh <shashsingh@nvidia.com>
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Add macros for whitelisting coverity violations. These macros use pragma
directives. The pragma directives and whitelisting macros are only
enabled when a coverity scan is being run.
The whitelisting macros have been added to a new header called
static_analysis.h. The contents of safe_ops.h (CERT C safe ops) have
been moved into static_analysis.h because this will be the new header
for static analysis related macros/defines/etc.
JIRA NVGPU-3820
Change-Id: I9c63f20f670880b420415535738034619314b7c3
Signed-off-by: Adeel Raza <araza@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2180600
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For getting the buffer size qnx issues a devctl to nvmap which can fail
as well. So, check the size that is returned by nvgpu_os_buf_get_size.
If 0 size is returned then return -EINVAL to the caller.
Jira NVGPU-3891
Change-Id: Id13e7612b044e9228d78469ab4e43961a6877ce8
Signed-off-by: Shashank Singh <shashsingh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2174458
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Advisory Rule 2.7 states that there should be no unused
parameters in functions.
This patch removes unused function parameters from the following:
* release_as_share_id() -> remove 'id' param
* nvgpu_pd_cache_look_up() -> remove 'g' param
* nvgpu_vm_get_pte_size_fixed_map() -> remove 'size' param
Jira NVGPU-3178
Change-Id: Id2c3b5378bba9bdc0312742fd8393fb3ec67c4df
Signed-off-by: Scott Long <scottl@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2178650
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CE app functionality from nvgpu is non-safe for igpu. CE engines init
/reset/cg related functionality is required in safety. Hence move the
CE app logic under CONFIG_NVGPU_DGPU flag and update the sources
accordingly.
JIRA NVGPU-3814
Change-Id: I37aa00b1184baccd5fe569ec315be60ac42dac9b
Signed-off-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2168956
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Rule 11.3 forbids pointer cast between two different object types.
Rule 13.5 doesn't allow right hand operand of a logical operator to have
persistent side effects.
This patch fixes mentioned rules in nvgpu.common.mm.
Jira NVGPU-3864
Change-Id: I08b7fb4d3fb623f14f8760a50648b39b3e53b233
Signed-off-by: Vedashree Vidwans <vvidwans@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2168522
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INT30-C requires that unsigned integer operations do not wrap.
INT31-C requires checking that data isn't misinterpreted after casting.
INT32-C requires that signed operations do not overflow.
Jira NVGPU-3882
Change-Id: I6b4c1769ec85919f8ec2aa183cba3b7c0ffa1e97
Signed-off-by: Vedashree Vidwans <vvidwans@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2166124
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Rule 2.2 doesn't allow unused variable assignments. The reason is
presence of unused variable assignments may indicate error in program's
logic.
Rule 21.x doesn't allow reserved identifier or macro names starting with
'_' to be reused or defined.
Jira NVGPU-3864
Change-Id: I8ee31c0ee522cd4de00b317b0b4463868ac958ef
Signed-off-by: Vedashree Vidwans <vvidwans@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2163723
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Add documentation for channel functions used in safety build.
Made nvgpu_channel_commit_va return void, as it can never fail.
Removed nvgpu_channel_recover prototype (function moved to rc unit).
Compile out refcount tracking definitions when
GK20A_CHANNEL_REFCOUNT_TRACKING is disabled.
Removed unused nvgpu_channel_set_ctx_mmu_error function.
Jira NVGPU-3588
Change-Id: Ia65a6c60ff30837230d81ca0e5f6dadafcc3af4e
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2159674
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INT-30 requires checking for overflow of arithmetic operations on
unsigned integers.
INT-31 requires bounds checking for unsigned integers cast to
smaller size.
Fix these violations by using the safe ops in nvgpu.common.mm.mm and
nvgpu.hal.mm.mm.
JIRA NVGPU-3848
Change-Id: I2751a14fb1f45d330a92040ac3c7777c52ae9199
Signed-off-by: Philip Elcan <pelcan@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2158860
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Reviewed-by: Alex Waterman <alexw@nvidia.com>
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MISRA Advisory Rule 10.5 states that the value of an expression should
not be cast to an inappropriate essential type.
This change removes five violations of this rule that involve casting
boolean results to unsigned values:
* pass 1/0 (instead of true/false) to nvgpu_atomic operations
* fix skip_mask handling in gm20b_gr_init_pd_skip_table_gpc()
* fix l3_alloc flags check in nvgpu_gmmu_map_locked()
This change also eliminates several MISRA Advisory Rule 4.6 violations.
JIRA NVGPU-3798
Change-Id: I707da8a812bfb32eaeb2200463885c0961b197b3
Signed-off-by: Scott Long <scottl@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2153070
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Currently, nvgpu_vidmem_buf_access_memory() accepts u64 size/offset
values to access memory. However, underlying nvgpu_mem read and write
functions truncate size/offset value to u32. So, any VIDMEM buffer
larger than 4GB will be inaccessible above 4GB by userspace IOCTL.
This patch updates nvgpu_mem_rd_n() and nvgpu_mem_wr_n() to accept
u64 size and u64 offset values.
BUG-2489032
Change-Id: I299742b1813e5e343a96ce25f649a39e792c3393
Signed-off-by: Vedashree Vidwans <vvidwans@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2143138
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This patch fixes violations for below listed rules in
nvgpu/common/mm/as.c.
MISRA Rule 10.3 forbids implicit conversion of an essential type to
different or narrower essential type.
MISRA rule 10.4 requires essential type of left hand operand to be same
as right hand operand.
MISRA Rule 21.8 requires the size_t argument of strncpy() to be less
than length of the source string.
Change-Id: I4ff1e4dbbd602baf906af8230c6902249e0223e8
Signed-off-by: Vedashree Vidwans <vvidwans@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2142566
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Reviewed-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-by: Vinod Gopalakrishnakurup <vinodg@nvidia.com>
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Safety build does not support vidmem. This patch compiles out vidmem
related changes - vidmem, dma alloc, cbc/acr/pmu alloc based on
vidmem and corresponding tests like pramin, page allocator &
gmmu_map_unmap_vidmem..
As vidmem is applicable only in case of DGPUs the code is compiled
out using CONFIG_NVGPU_DGPU.
JIRA NVGPU-3524
Change-Id: Ic623801112484ffc071195e828ab9f290f945d4d
Signed-off-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2132773
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vaibhav Kachore <vkachore@nvidia.com>
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Fix the following MISRA rule violations in bitops unit,
MISRA Rule 10.1
MISRA Rule 10.3
MISRA Rule 10.4
MISRA Rule 11.8
MISRA Rule 21.2
Introduce nvgpu specific functions for bitops and bitmap operations
with unsigned integer as parameter for offset. OS specific type
conversions and handling of these inerfaces are taken care in the
respective OS files.
Jira NVGPU-3545
Change-Id: Ib1ef76563db6ba1d879a0b4d365b2958ea03f85c
Signed-off-by: ajesh <akv@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2129513
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