| Commit message (Collapse) | Author | Age |
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Reduce amount of duplicate code around memory allocation by using
common helpers, and common data structure for storing results of
allocations.
Bug 1605769
Change-Id: Idf51831e8be9cabe1ab9122b18317137fde6339f
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/721030
Reviewed-on: http://git-master/r/737530
Reviewed-by: Alexander Van Brunt <avanbrunt@nvidia.com>
Tested-by: Alexander Van Brunt <avanbrunt@nvidia.com>
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This reverts commit 83bc90620f863977101a164780de360bcd0aa088.
bug 1628118
Change-Id: I478f9dd3685b55b4fce18354d475ee0b817a7775
Signed-off-by: Sam Payne <spayne@nvidia.com>
Reviewed-on: http://git-master/r/727152
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Reduce amount of duplicate code around memory allocation by using
common helpers, and common data structure for storing results of
allocations.
Bug 1605769
Change-Id: I10c226e2377aa867a5cf11be61d08a9d67206b1d
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/720507
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Fix the following sparse warning:
-drivers/gpu/nvgpu/gk20a/gr_gk20a.c:6028:6: warning: symbol
'gr_gk20a_init_sm_dsm_reg_info' was not declared. Should it be static?
-gr_gk20a.c:6174:6: warning: symbol 'gr_gk20a_get_sm_dsm_perf_regs' was not
declared. Should it be static?
-gr_gk20a.c:6184:6: warning: symbol 'gr_gk20a_get_sm_dsm_perf_ctrl_regs' was
not declared. Should it be static?
-gr_gm20b.c:465:6: warning: symbol 'gr_gm20b_init_sm_dsm_reg_info' was not
declared. Should it be static?
-gr_gm20b.c:476:6: warning: symbol 'gr_gm20b_get_sm_dsm_perf_regs' was not
declared. Should it be static?
-gr_gm20b.c:486:6: warning: symbol 'gr_gm20b_get_sm_dsm_perf_ctrl_regs' was not
declared. Should it be static?
Bug 200067946
Change-Id: Ic14080e94e343386f4fef379152a623c402984fd
Signed-off-by: Sandarbh Jain <sanjain@nvidia.com>
Reviewed-on: http://git-master/r/723518
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
Tested-by: Sachin Nikam <snikam@nvidia.com>
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Add platform specific API pointer (*get_iova_addr)()
which can be used to get iova/physical address from
given scatterlist and flags
Use this API with g->ops.mm.get_iova_addr() instead
of calling API gk20a_mm_iova_addr() which makes it
platform specific
Bug 1605653
Change-Id: I798763db1501bd0b16e84daab68f6093a83caac2
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/713089
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Reduce amount of duplicate code around memory allocation by using
common helpers, and common data structure for storing results of
allocations.
Bug 1605769
Change-Id: I7c1662b669ed8c86465254f6001e536141051ee5
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/720435
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Catch DS exception and write an error to UART.
Change-Id: Iaad9813c48191f0d3d734d4af264b976a3818672
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/679142
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Update extended buffer definition for Maxwell. On GM20B only PERF_CONTROL0 and
PERF_CONTROL5 registers are restored in extended buffer. They are needed for
stopping the counters as late as possible during ctx save and start them as
early as possible during context restore. On Maxwell, these registers contain
the enable/disable bit.
Bug 200086767
Change-Id: I59125a2f04bd0975be8a1ccecf993c9370f20337
Signed-off-by: Sandarbh Jain <sanjain@nvidia.com>
Reviewed-on: http://git-master/r/717421
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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GR status disable mask was never set, so driver always disabled all
engines from status rollup.
Change-Id: I500a127be9253294f73d1f42ce89b886471a9117
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/719141
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Move the fifo engine activity disabling and wait-for-idle from the
lowest-level functions higher, into the ioctl path of zbc operations, so
that the sw initialization path wouldn't call them. During the init
path, the disable isn't necessary, and the code path could result in a
deadlock in the fifo runlist mutex.
Change-Id: Ia3d768b7ad2d829416a1144486e6788d3177eb04
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/715195
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Fixed the following sparse warnings by making below APIs static:
- gk20a.c: warning: symbol 'gk20a_pm_restore_debug_setting' was not declared.
Should it be static?
- gr_gk20a.c: warning: symbol 'gr_gk20a_rop_l2_en_mask' was not declared.
Should it be static?
- gr_gm20b.c: warning: symbol 'gr_gm20b_rop_l2_en_mask' was not declared.
Should it be static?
Bug 200067946
Change-Id: I334893bb6614171bff835d270716a7dd262c9ba7
Signed-off-by: Amit Sharma (SW-TEGRA) <amisharma@nvidia.com>
Reviewed-on: http://git-master/r/718756
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
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Introduce mem_desc, which holds all information needed for a buffer.
Implement helper functions for allocation and freeing that use this
data type.
Change-Id: I82c88595d058d4fb8c5c5fbf19d13269e48e422f
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/712699
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New members are added in nvgpu_gpu_characterstics to export more
information required specially from CUDA tools.
Change-Id: I907f3bcbd272405a13f47ef6236bc2cff01c6c80
Signed-off-by: Sujeet Baranwal <sbaranwal@nvidia.com>
Reviewed-on: http://git-master/r/679202
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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The current CUDA drivers have been using the regops to
directly accessing the GPU registers from user space through
the dbg node. This is a security hole and needs to be avoided.
The patch alternatively implements the similar functionality
in the kernel and provide an ioctl for it.
Bug 200083334
Change-Id: Ic5ff5a215cbabe7a46837bc4e15efcceb0df0367
Signed-off-by: sujeet baranwal <sbaranwal@nvidia.com>
Reviewed-on: http://git-master/r/711758
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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We currently have below exceptions enabled but we do
not have any handler for them. So if any of these
exception is raised, we do not clear it.
NV_PGRAPH_EXCEPTION_PD
NV_PGRAPH_EXCEPTION_SCC
NV_PGRAPH_EXCEPTION_DS
NV_PGRAPH_EXCEPTION_MME
NV_PGRAPH_EXCEPTION_SKED
Hence do not enable above exceptions.
Bug 200078514
Change-Id: I0dd3a2299f80f3fe06994818f64151e7cc83a84e
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/714166
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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In gk20a_gr_isr(), handle memfmt exception as below :
- read NV_PGRAPH_PRI_MEMFMT_HWW_ESR
- debug print for contents of above register
- write same value back to NV_PGRAPH_PRI_MEMFMT_HWW_ESR and
clear the exception
Bug 200078514
Change-Id: I5b9afacd7f99b5a37de953041582b3a53b863642
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/713713
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Add below exception registers to GR dump :
NV_PGRAPH_PRI_BE0_BECS_BE_EXCEPTION
NV_PGRAPH_PRI_BE0_BECS_BE_EXCEPTION_EN
NV_PGRAPH_PRI_GPC0_GPCCS_GPC_EXCEPTION
NV_PGRAPH_PRI_GPC0_GPCCS_GPC_EXCEPTION_EN
NV_PGRAPH_PRI_GPC0_TPC0_TPCCS_TPC_EXCEPTION
NV_PGRAPH_PRI_GPC0_TPC0_TPCCS_TPC_EXCEPTION_EN
Bug 200078514
Change-Id: Ib0ec34f7bf5a136928c53cf8398b4929fb4639c5
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/712480
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Fix panics in error path when FECS cannot be booted.
Change-Id: I354e37579386e27f46b80cd4172fe12897a3b92f
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/712698
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Bug 200067946
Change-Id: Ifec926b406c1daf0295d9ee07f1962b56c1b603a
Signed-off-by: Supriya <ssharatkumar@nvidia.com>
Reviewed-on: http://git-master/r/711479
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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CUDA devtools need to be able to flush the GPU's cache
in a sideband fashion and so cannot use methods. This
change implements an nvgpu_gpu_ioctl to flush and
optionally invalidate the GPU's L2 cache and flush fb.
Change-Id: Ib06a0bc8d8880ffbfe4b056518cc3c3df0cc4988
Signed-off-by: sujeet baranwal <sbaranwal@nvidia.com>
Signed-off-by: Mayank Kaushik <mkaushik@nvidia.com>
Reviewed-on: http://git-master/r/671809
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Disable GO_IDLE timeout when pushing SW methods. This stops FE_GI bit
from getting enabled, so remove polling for that, too.
Change-Id: I695aa9fbc68d4fe722ae46a28d7f4cc05db75b3b
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/709878
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bug 200069748
Invalidating FECS code instblk is required only if
FECS uses bootloader to load. Added check for same
instead of using PMU support to invalidate.
Handle elpg enable/disable call in case PMU is OFF.
Change-Id: I28abbbbe1f22edd9e0417df9d0e831bbd770502c
Signed-off-by: Deepak Goyal <dgoyal@nvidia.com>
Reviewed-on: http://git-master/r/670664
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Tested-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Supriya Sharatkumar <ssharatkumar@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Add below APIs to dump various GR status registers
1. debugfs : /d/gpu.0/gr_status
Read this debugfs at runtime to get status registers
2. API gk20a_gr_debug_dump()
Add this API in code to dump registers at any point
Bug 200062436
Change-Id: Ic1115b5a2fc16362954b5ed8a9e70afb872a8d91
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/486465
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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bug 200078367
using udelay for fecs status polling
during GR init phase brings down fecs
transaction time to < 20usec from few
hundred usec.
Change-Id: I61a27daaf1187ac086a42779b46aa3fbee3b37f2
Signed-off-by: Vijayakumar <vsubbu@nvidia.com>
Reviewed-on: http://git-master/r/691918
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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FECS halt method is used to do graceful FECS shutdown.
Bug 1551865
Change-Id: Iec8590e86cb09f9b54c36f85859208fc8650f6a6
Signed-off-by: Supriya <ssharatkumar@nvidia.com>
Reviewed-on: http://git-master/r/682459
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Use busy looping on L2 and TLB maintenance operations. This speeds
them up by an order of magnitude.
Add also trace points to measure performance for memory ops and
interrupt processing.
Change-Id: Ic4a8525d3d946b2b8f57b4b8ddcfc61605619399
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/681640
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Create gk20a_init_inst_block() to reduce reg write clutter when
initializing instance blocks, which is done in several places.
Change-Id: Idcb8b604851a849e0bb6abce5743c9f4cbf98033
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/672434
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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For compute channel on gk20a, set lockboost size to zero.
Bug 1573856
Change-Id: I369cebf72241e4017e7d380c82caff6014e42984
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/594843
GVS: Gerrit_Virtual_Submit
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CTA preemption needs to be enabled by setting a value in context. Set
it for gm20b.
Bug 200063473
Bug 1517461
Change-Id: I080cd71b348d08f834fd23ebbe7443dba79224db
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/661299
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Reduce copypaste code in instance block allocation and deletion with
functions purposed for that.
Change-Id: I2c8ae6a317ac89e2c857dde4296cb4316b8aaafe
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/668698
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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The default zbc entries were never populated in zbc HW table
because the conditional flag "gr->sw_ready" was always set thus
avoided the zbc default loading function call. Now zbc default
loading would happen only during boot time in sw structure.Hw
zbc regs would be loaded from that structure every time a
railgate exit happens.
Bug 1580210
Change-Id: Ie3e40738cbc84cf724c3f3871f15b17a5c84025a
Signed-off-by: Sujeet Baranwal <sbaranwal@nvidia.com>
Reviewed-on: http://git-master/r/662306
Reviewed-by: Sami Kiminki <skiminki@nvidia.com>
Tested-by: Lauri Peltonen <lpeltonen@nvidia.com>
Reviewed-by: Arto Merilainen <amerilainen@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Signed-off-by: Dan Willemsen <dwillemsen@nvidia.com>
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Add HAL for context creation, and expose functions that T18x context
creation needs.
Bug 1517461
Bug 1521790
Bug 200063473
Change-Id: I63d1c52594e851570b677184a4585d402125a86d
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/660237
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Make mem_desc a generic container for buffers. Add functions for
allocating and mapping buffers to an address space which store their
data in mem_desc.
Change-Id: I031643442c6fd41f5e7222fe9b7bfcaf9b784db5
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/660908
GVS: Gerrit_Virtual_Submit
Reviewed-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
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Make pagepool size query into a function instead of storing the value
during boot time in a structure. This simplifies the structure and
users of pagepool size do not need to worry about whether it has
already been set.
Change-Id: Iba16e840cdf9b6c39449730237aa7d8fdff47848
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/660907
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Bug 1567274
Change-Id: Ib366f56c109f60be98435124e9e73697d161c4d0
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/606935
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
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Retrieve number of physical page bits based on chip.
Bug 1567274
Change-Id: I5a0f6a66be37f2cf720d66b5bdb2b704cd992234
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/601700
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Turn add ZBC functions into HALs that can be filled per chip.
Bug 1567274
Change-Id: Ic6ef29d3353d4a0079ea0c80f513ffd579fe554f
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/601109
Reviewed-by: Automatic_Commit_Validation_User
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Follow steps below to config active TPC number:
echo 1 > /sys/devices/platform/host1x/gpu.0/force_idle
echo 0x1/0x2/0x3 > /sys/devices/platform/host1x/gpu.0/tpc_fs_mask
echo 0 > /sys/devices/platform/host1x/gpu.0/force_idle
where,
0x1 : disable TPC1
0x2 : disable TPC0
0x3 : both TPCs active
Also, add API set_gpc_tpc_mask to update the TPCs and call this
API after update to sysfs "tpc_fs_mask"
Once fuses are updated for new TPC settings, we need to
reconfigure GR and golden_image. Hence disable gr->sw_ready
and golden_image_initialized flags.
Also, initialize gr->tpc_count = 0 each time in
gr_gk20a_init_gr_config(), otherwise it goes on adding tpc count
Bug 1513685
Change-Id: Ib50bafef08664262f8426ac0d6cbad74b32c5909
Signed-off-by: Kevin Huang <kevinh@nvidia.com>
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/552606
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
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Add the following info into GPU characteristics: available big page
sizes, support indicators for sync fence fds and cycle stats, gpc
mask, SM version, SM SPA version and warp count, and IOCTL interface
levels. Also, add new IOCTL to fetch TPC masks.
Bug 1551769
Bug 1558186
Change-Id: I8a47d882645f29c7bf0c8f74334ebf47240e41de
Signed-off-by: Sami Kiminki <skiminki@nvidia.com>
Reviewed-on: http://git-master/r/562904
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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bug 200048467
Change-Id: I39f85a638b6bc97442ebf8e4a78e07c8575e4b20
Signed-off-by: Vijayakumar <vsubbu@nvidia.com>
Reviewed-on: http://git-master/r/592751
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Fix below sparse warnings :
warning: Using plain integer as NULL pointer
warning: symbol <variable/funcion> was not declared. Should it be static?
warning: Initializer entry defined twice
Also, remove dead functions
Bug 1573254
Change-Id: I29d71ecc01c841233cf6b26c9088ca8874773469
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/593363
Reviewed-by: Amit Sharma (SW-TEGRA) <amisharma@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
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Regenerate HW headers after adding SM debugger registers.
Change-Id: Icc47c11f8e9ff52c0cf1f3a54233fb781c2c2b67
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Add WARN_ON to a critical error condition to get a backtrace dump.
Bug 200046882
Change-Id: I76c4186024547c6e89f1465612fe17f44e27eefe
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
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With CG enabled sometimes fifo could not be idled
during firmware load.
Bug 200042729
Change-Id: I43d7551c0c7c19314c52ac5f678afed8c6df6415
Signed-off-by: Vijayakumar <vsubbu@nvidia.com>
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Signed-off-by: Vijayakumar <vsubbu@nvidia.com>
Reviewed-on: http://git-master/r/559077
Reviewed-by: Automatic_Commit_Validation_User
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Kernel support for allowing a GPU debugger to suspend and resume
SMs. Invocation of "suspend" on a given channel will suspend all
SMs if the channel is resident, else remove the channel form the
runlist. Similarly, "resume" will either resume all SMs if the
channel was resident, or re-enable the channel in the runlist.
Change-Id: I3b4ae21dc1b91c1059c828ec6db8125f8a0ce194
Signed-off-by: sujeet baranwal <sbaranwal@nvidia.com>
Signed-off-by: Mayank Kaushik <mkaushik@nvidia.com>
Reviewed-on: http://git-master/r/552115
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Since the number of TPCs is different between GM20B and GK20a,
the function to look up the number of TPCs needs to be halified.
Change-Id: I19dab9a7105814f86c08c92283a0bb70abb6aa00
Signed-off-by: Mayank Kaushik <mkaushik@nvidia.com>
Reviewed-on: http://git-master/r/500064
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Fix the code that checks if the channel passed in for
regops is resident by also accounting for the TSG id,
if the channel is part of a TSG.
Change-Id: I449344e2887a4de4d55122f4aae5d3d4efabf725
Signed-off-by: Mayank Kaushik <mkaushik@nvidia.com>
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nvgpu framework and build for T18x
Bug 1567274
Change-Id: I77835302a1110573008869d1106eface512bb9b1
Signed-off-by: Ken Adams <kadams@nvidia.com>
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
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Support added to send PMU and FECS signatures
to ACR ucode
Bug 200046413
Change-Id: Ie1babb640be20a697ad4d6dd18bd11161edb263c
Signed-off-by: Vijayakumar <vsubbu@nvidia.com>
Signed-off-by: Supriya <ssharatkumar@nvidia.com>
Signed-off-by: Vijayakumar <vsubbu@nvidia.com>
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