- When read from aelpg_param_read sysfs node and
write to aelpg_param_store sysfs node is done it
leads to system crash.
- This issue is seen on safety build as power features
are not enabled.
- To avoid this crash, add aelpg platform flag check in
aelpg_param_read and aelpg_param_store sysfs nodes.
- Also, as AELPG depends on ELPG add can_elpg check before
enabling/disabling aelpg through sysfs node.
Bug 3582946
Change-Id: Iaf709db2b5dc0340390767f4b06a0ac06962ed77
Signed-off-by: Divya <dsinghatwari@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2690548
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
GVS: Gerrit_Virtual_Submit
Replace the usage of tegra_fuse_readl with nvmem_cell_read_u32 for the
below fuse registers added as nvmem cells on v5.10+ kernels.
Older nvidia kernels do not have these tegra nvmem cell support.
1. FUSE_GCPLEX_CONFIG_FUSE_0
2. FUSE_RESERVED_CALIB0_0
3. FUSE_PDI0
4. FUSE_PDI1
bug 200633045
Change-Id: I187400720929233fcbc1970c9bbed34347b0a9a7
Signed-off-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2670828
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: Jonathan Hunter <jonathanh@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
GVS: Gerrit_Virtual_Submit
strncpy to a string from non-null terminating string without checking the
size of the source string can lead to target string become non-null
terminating. This can't be passed to strcat as it expects null
terminating string.
Check the size of the source string "name" in nvgpu_page_allocator_init.
CID 81207
Bug 3512546
Change-Id: I4b245a8c2236038c40912cee72d4dbf1ca14a525
Signed-off-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2692604
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-misra <svc-mobile-misra@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
GVS: Gerrit_Virtual_Submit
- When DISALLOW cmd is sent from driver to PMU the actual
completion of the disallow will be acknowledged by PMU
via a PG EVENT: ASYNC_CMD_RESP.
- Disallow needs a delayed ACK from PMU in order to disable
the ELPG.
- If ELPG is already engaged, the DISALLOW cmd will trigger
ELPG exit and then transition to PMU_PG_STATE_DISALLOW.
- After this whole process is completed, PMU will send
DISALLOW_ACK through ASYNC_CMD_RESP msg.
- After disallow command is sent from the driver, NvGPU driver
waits/polls for disallow command ack. This is sent immediately
by msg framework of PMU.
- Then, the driver will poll/wait for ASYNC_CMD_RESP event which
is the delayed DISALLOW ACK.
- The driver captures the ASYNC_CMD_RESP sent from PMU.
- set disallow_state to ELPG_OFF.
- If the driver does not wait/poll for this delayed disallow
ack from PMU, it can result in erros as PMU is still
processing DISALLOW cmd but the driver progressed further.
Bug 3580271
Change-Id: I332180c05b6a398107f065d54e9718b7038fb1b2
Signed-off-by: Divya <dsinghatwari@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2689500
Reviewed-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
GVS: Gerrit_Virtual_Submit
Update GR suspend routine to clear GR falcon "coldboot_bootstrap_done"
flag, this is needed because GPU power rails are turned off during
suspend cycle due to which GR falcons need to be bootstrapped again
during resume.
Function "nvgpu_gr_falcon_suspend" is added to clear the above mentioned
flag.
Bug 3497398
Bug 3514055
Change-Id: If852a2c09f05c096f287b845c56d8b4f335ec8e7
Signed-off-by: Antony Clince Alex <aalex@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2670554
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-by: svc-mobile-misra <svc-mobile-misra@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
GVS: Gerrit_Virtual_Submit
The high level API for the timer unit is the same across all OSs, so
get rid of the slight code duplication by moving the timer init
functions under a new file in common code:
- nvgpu_timeout_init_cpu_timer
- nvgpu_timeout_init_cpu_timer_sw
- nvgpu_timeout_init_retry
Much of the timer logic is also duplicated, but it is mixed between OS
specific current time retrieval. With some refactoring and addition of
an OS independent time keeping layer, that logic could also be made
shared.
Change-Id: I75d02ceb0d32022b0ba7f3bcd9fdb13d47039dbc
Signed-off-by: Konsta Hölttä <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2669510
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Below listed HSI are handled with PMU ISR handler and
all these triggers interrupt from individual unit upon issue.
-Add ECC check for IMEM, DMEM, DCLS, REG, and MPU as per
HSI req
-Add MEMERR check for GPU_PMU_ACCESS_TIMEOUT_UNCORRECTED
PMU HSI id
-Add IOPMP check for GPU_PMU_ILLEGAL_ACCESS_UNCORRECTED
PMU HSI id
-Add WDT check for GPU_PMU_WDT_UNCORRECTED PMU HSI id
Bug 3491596
Bug 3366818
Change-Id: I751d653e447017ac62a2459da2c6bb9da506f438
Signed-off-by: mkumbar <mkumbar@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2686566
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
- Add PMU NVRISCV BR failure HSI support.
- Created a falcon unit function to check for the
BR competition status check and called from
other units as needed.
Bug 3491596
Bug 3366818
Change-Id: I5c3c6a7e6aeaad68f77e6b24f21239e40d9a7f78
Signed-off-by: mkumbar <mkumbar@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2686370
Reviewed-by: Rajesh Devaraj <rdevaraj@nvidia.com>
Reviewed-by: Vaibhav Kachore <vkachore@nvidia.com>
GVS: Gerrit_Virtual_Submit
In Drive 6.0, the error reporting is supported only for orin (ga10b)
in dev-main. For this purpose, this patch does the following:
- Removes the redundant reporting of following IDs from gv11b:
- GPU_HOST_PFIFO_SCHED_ERROR
- GPU_HOST_PFIFO_CTXSW_TIMEOUT_ERROR
- GPU_HOST_PBDMA_HCE_ERROR
- GPU_MMU_L1TLB_SA_DATA_ECC_UNCORRECTED
- GPU_MMU_L1TLB_FA_DATA_ECC_UNCORRECTED
- GPU_LTC_CACHE_DSTG_ECC_CORRECTED
- GPU_LTC_CACHE_TSTG_ECC_UNCORRECTED
- Migrates the reporting of following IDs from gv11b to ga10b:
- GPU_SM_L1_TAG_ECC_CORRECTED
- GPU_SM_L1_TAG_ECC_UNCORRECTED
- GPU_SM_CBU_ECC_UNCORRECTED
- GPU_SM_LRF_ECC_UNCORRECTED
- GPU_SM_L1_DATA_ECC_UNCORRECTED
- GPU_SM_ICACHE_L1_DATA_ECC_UNCORRECTED
- GPU_SM_ICACHE_L0_PREDECODE_ECC_UNCORRECTED
- GPU_SM_L1_TAG_MISS_FIFO_ECC_UNCORRECTED
- GPU_SM_L1_TAG_S2R_PIXPRF_ECC_UNCORRECTED
- Removes the unused ID that doesn't have any HSI related to it:
- GPU_HOST_PBDMA_PREEMPT_ERROR
In addition to the above, this patch does the following:
- Updates error IDs related to page fault error.
- Updates look-up table to remove unused error IDs.
JIRA NVGPU-8094
Bug 200729736
Change-Id: Ifea76d38ba609c894560e61ff5a6e406290f919e
Signed-off-by: Rajesh Devaraj <rdevaraj@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2685249
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: Dinesh T <dt@nvidia.com>
Reviewed-by: Vaibhav Kachore <vkachore@nvidia.com>
GVS: Gerrit_Virtual_Submit
When an error is reported to Safety_Services, it will be cleared
at FSI and reported to SEH (System Error Handler). Since MISC_EC
interface provides only one register for error reporting, there
is a need to poll the status of previously reported error before
reporting the next error. For this purpose, this patch adds logic
to perform polling using epl_get_misc_ec_err_status(), in AV+L.
JIRA NVGPU-8094
Bug 200729736
Change-Id: Ia01a2fc42a7ce586b7965a82c90027a9a2dd252b
Signed-off-by: Rajesh Devaraj <rdevaraj@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2684141
Reviewed-by: Dinesh T <dt@nvidia.com>
Reviewed-by: Ankur Kishore <ankkishore@nvidia.com>
GVS: Gerrit_Virtual_Submit
Patch udpates/fixes following issues.
- Updates nvgpu_dbg_gpu_get_mappings_entry.size to u64 to address >4G
limitations.
- Removes offset from original cpuva and unmaps only original mapped
address.
- Call nvgpu_vm_find_mapped_buf_range() in place of
nvgpu_vm_find_mapped_buf() to find the addresses which are not
page aligned.
- Update logic to parse the gpuva while trying to find gpu mappings so
that gpuva which are more than the mapped buffer base address can also
be considered.
Bug 200722275
Change-Id: If33d85db37a9f03a662984c212544a8b2ade471c
Signed-off-by: prsethi <prsethi@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2612129
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Dinesh T <dt@nvidia.com>
Reviewed-by: Vaibhav Kachore <vkachore@nvidia.com>
GVS: Gerrit_Virtual_Submit
While checking the GPU error status, userspace polls on the error
notifier 'status' and then verifies 'status' and 'info32'. nvgpu
sets 'info32' before 'status', so put a write barrier between
those two writes for the consistency between userspace and
kernel view of the error notifier state.
JIRA NVGPU-7538
Bug 200717195
Bug 3250920
Change-Id: I92ac0589283fee823f3366ac594d03b8f27f3590
Signed-off-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2680320
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
-Add check for ECC parity errors in IMEM, DMEM, EMEM, DCLS, REG
for ACR running in GSP engine.
The EXTIRQ3 external interrupt is set from ACR pointing towards host.
-Add function to check error type when ACR or Bootrom execution fails
and report accordingly to SDL with relevant error codes.
This is a part of HSI safety requirements.
Bug 3564039
Jira NVGPU-8108
Change-Id: I65407371f7a1d1ba50a10bdf443ef6b903eeaa36
Signed-off-by: mpoojary <mpoojary@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2678100
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Cast the return code of sprintf away when creating a scheduling domain
device name. While at it, use snprintf just in case.
CID 497476
CID 497479
Bug 3512545
Change-Id: I4e26c29b889de4b709d582ec3fdde28c50fca5b9
Signed-off-by: Konsta Hölttä <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2681274
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
GVS: Gerrit_Virtual_Submit
a. LAUNCH_ERR
- Userspace error.
- Triggered due to faulty launch.
- Handle using recovery to reset CE engine and teardown the
faulty channel.
b. An INVALID_CONFIG -
- Triggered when LCE is mapped to floorswept PCE.
- On iGPU, we use the default PCE 2 LCE HW mapping.
The default mapping can be read from NV_CE_PCE2LCE_CONFIG
INIT value in CE refmanual.
- NvGPU driver configures the mapping on dGPUs (currently only on
Turing).
- So, this interrupt can only be triggered if there is
kernel or HW error
- Recovery ( which is killing the context + engine reset) will
not help resolve this error.
- Trigger Quiesce as part of handling.
c. A MTHD_BUFFER_FAULT -
- NvGPU driver allocates fault buffers for all TSGs or contexts,
maps them in BAR2 VA space and writes the VA into channel
instance block.
- Can be triggered only due to kernel bug
- Recovery will not help, need quiesce
d. FBUF_CRC_FAIL
- Triggered when the CRC entry read from the method fault buffer
does not match the computed CRC from the methods contained in
the buffer.
- This indicates memory corruption and is a fatal interrupt which
at least requires the LCE to be reset before operations can
start again, if not the entire GPU.
- Better to quiesce on memory corruption
CE Engine reset (via recovery) will not help.
e. FBUF_MAGIC_CHK_FAIL
- Triggered when the MAGIC_NUM entry read from the method fault
buf does not match NV_CE_MTHD_BUFFER_GLOBAL_HDR_MAGIC_NUM_VAL
- This indicates memory corruption and is a fatal interrupt
- Better to quiesce on memory corruption
f. STALLING_DEBUG
- Only triggered with SW write for debug purposes
- Debug interrupt, currently ignored
Move launch error handling from GP10b to GV11b HAL as -
1. LAUNCHERR_REPORT errcode METHOD_BUFFER_ACCESS_FAULT is not
defined on Pascal
2. We do not support GP10b on dev-main ToT
JIRA NVGPU-8102
Change-Id: Idc84119bc23b5e85f3479fe62cc8720e98b627a5
Signed-off-by: Tejal Kudav <tkudav@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2678893
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
g->fifo.runlists[] has size of g->fifo.max_runlists. During quiesce,
U32_MAX bitmask is passed to g->ops.runlist.write_state() HAL to
disable all the runlist. The Ga10b HAL implementation of
g->ops.runlist.write_state() references into runlists[] structure
for all the bits set in input runlist mask. For mask=U32_MAX,
there is NULL pointer dereference when runlist_id exceeds
g->fifo.max_runlists.
Add runlist_id boundary check before dereferencing the runlists[]
structure.
Update Gk20a HAL too with similar guard to make sure incorrect mask
doesn't get written to the register.
JIRA NVGPU-8102
Change-Id: Ic613aa38361b8b23d953c76d6924aba6bf6d5ea9
Signed-off-by: Tejal Kudav <tkudav@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2680847
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-misra <svc-mobile-misra@nvidia.com>
Reviewed-by: Vaibhav Kachore <vkachore@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
GVS: Gerrit_Virtual_Submit
Add new HAL gops.gr.init.set_default_gfx_regs() to set graphics specific
PRI values for graphics contexts in function nvgpu_gr_obj_ctx_alloc().
Add new HAL gops.gr.init.capture_gfx_regs() to capture and save init
values for the PRIs. Add new struct nvgpu_gr_obj_ctx_gfx_regs to hold the
PRI init values.
Define HAL functions gv11b_gr_init_set_default_gfx_regs() and
gv11b_gr_init_capture_gfx_regs(). Set the HAL functions for
gv11b and ga10b.
Register accessors required to set PRIs are auto-generated.
Bug 3506078
Change-Id: I4c2843a274f3c924e402541e600e104ed0c9ed1c
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2671598
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: Shashank Singh <shashsingh@nvidia.com>
Reviewed-by: Jonathan Mccaffrey <jmccaffrey@nvidia.com>
GVS: Gerrit_Virtual_Submit
- MISRA Directive 4.7
Calling function "nvgpu_tsg_unbind_channel(tsg, ch, true)" which returns
error information without testing the error information.
- MISRA Rule 10.3
Implicit conversion from essential type "unsigned 64-bit int" to different
or narrower essential type "unsigned 32-bit int"
- MISRA Rule 5.7
A tag name shall be a unique identifier
JIRA NVGPU-5955
Change-Id: I109e0c01848c76a0947848e91cc6bb17d4cf7d24
Signed-off-by: srajum <srajum@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2572776
(cherry picked from commit 073daafe8a11e86806be966711271be51d99c18e)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2678681
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
This patch does the following:
- Defines a new flag "CONFIG_NVGPU_ENABLE_MISC_EC" when the
build is not targeted for RM Server. Since iGPU is in pass-through
mode in both safety and standard build, EPL libraries will not be
included in RM Server. This is done with the help of the flag
"NV_BUILD_CONFIGURATION_IS_VM_SERVER".
- Updates error id that will be reported to Safety_Services. The
format of the error ID is:
- HW_unit_id: (4-bits: bit 0 to 3),
- Error_id: (5-bits: bit 4 to 8),
- Corrected/Uncorrected error: (1-bit: bit-9),
- Remaining 22-bits are unused.
- Defines macros that will be used to form error ID.
- Defines a macro for SW_ERR_CODE_0 register which is allocated for
NvGPU to report errors to Safety_Services via MISC_EC.
JIRA NVGPU-8094
Change-Id: I02f37db75ef3b82952ef5f196f4e065d6c5d1a3e
Signed-off-by: Rajesh Devaraj <rdevaraj@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2677373
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
This reverts commit a372ec9a38.
Earlier golden context image verification was failing on orin safety due
to mismatch. But on tot there is no mismatch obeserved (possibly due to
update of NET image from A to D). So, now golden context image
verification can be re-enabled for orin safety.
Bug 3482988
Change-Id: I2bda9be921987e6b6a3b933b3ff45b26cf3025ca
Signed-off-by: Shashank Singh <shashsingh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2678153
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
This patch does the following:
- Adds error IDs for GSP ACR and GSP SCHED.
- Updates error IDs for PMU.
- Removes reporting of DMEM ECC_CORRECTED since DMEM RAMs in PWR is
protected only with parity mechanism, (ref: T23x_UPROC_Safety_IAS)
- Removes reporting of IMEM ECC_CORRECTED since IMEM RAMs for PROC in
PWR is protected only with parity mechanism, (ref: T23x_UPROC_Safety_IAS)
JIRA NVGPU-8094
Change-Id: I127e78b1aa76b552758d1fff5bc7a01b5f8f3e54
Signed-off-by: Rajesh Devaraj <rdevaraj@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2677589
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
User space may erroneously provide extra flags for buffer
mappings which always get silently ignored without any
error. It would be better to return error to catch cases
of ABI mismatches.
This patch checks if any extra flags were provided and
returns error if this is the case.
Jira NVGPU-6640
Bug 3489827
Change-Id: Ib226f049f81bef48bf00656259ed97ba0a3eb47c
Signed-off-by: Martin Radev <mradev@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2676684
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
GVS: Gerrit_Virtual_Submit
TEGRA_RAW mappings are only supposed to be used in special
circumstances by user space software, and the request cannot
be treated as a hint and be silently ignored if the feature
is not supported.
This patch updates the logic to return error if the feature is
not supported.
Jira NVGPU-6640
Bug 3489827
Change-Id: Ia2ce71df0202ab0c8676b815cf887cc7300aa07f
Signed-off-by: Martin Radev <mradev@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2676168
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
GVS: Gerrit_Virtual_Submit
Allow SC7 suspend/resume for platforms even if runtime pm
is disabled.
Currently, nvgpu can disable runtime pm by setting railgate_init
field to false for platform_{gk20a/gv11b/ga10b) files. This is done by
taking extra reference count in the PM Framework.
However, device suspend would still fail. Fix this by checking
for NVGPU_CAN_RAILGATE and removing the additional reference count
taken as mentioned above. Take the extra refcount back at
the end of the resume path.
Bug 3458643
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Change-Id: I413e09e2f9f380d78c0ce30196591e9c5b7544f3
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2668567
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
GVS: Gerrit_Virtual_Submit
