Create interrupt hal unit under hal.gr.intr.
This holds the interrupt and exception related hals.
Move enable_exceptions and enable_gpc_exceptions hal functions to
hal.gr.init location.
Modify enable_exceptions hal to pass gr->config and enable or disable
parameters.
Modify enable_gpc_exceptions to pass gr->config parameter.
Add new hal function enable_interrupts with enable or disable parameter
This hal helps to enable and disable the gr interrupts as needed.
gr init calls that use these hals are modified to
g->ops.gr.intr.enable_exceptions
g->ops.gr.intr.enable_gpc_exceptions
JIRA NVGPU-3016
Change-Id: Ib62f8bf0b5289b815c8eff4d32a47387f24af51b
Signed-off-by: Vinod G <vinodg@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2077857
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Move g->ops.gr.commit_global_bundle_cb() hal to hal.gr.init unit as
g->ops.gr.init.commit_global_bundle_cb()
Remove register header accessor from gr_gk20a_commit_global_ctx_buffers()
and move it to hal functions
Move hal definitions to gm20b/gp10b hal files appropriately
Jira NVGPU-2961
Change-Id: I6358dce963857402aa1d4d5606bf75398b9be83d
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2077216
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Move g->ops.gr.get_global_ctx_cb_buffer_size() and
g->ops.gr.get_global_ctx_pagepool_buffer_size() hals to hal.gr.init
unit
Move corresponding hal definitions to hal.gr.init unit
Jira NVGPU-2961
Change-Id: Ifff3e2073f6d9bca5b37244f7e107bad885e7ca7
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2077215
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Moved following ltc related data to struct nvgpu_ltc
and has a reference to it from struct gk20a:
struct nvgpu_spinlock ltc_enabled_lock;
u32 max_ltc_count;
u32 ltc_count;
u32 slices_per_ltc;
u32 cacheline_size;
Added function remove_support for ltc and it is called
during nvgpu remove sequence.
Added following helper functions in ltc.h:
u32 nvgpu_ltc_get_ltc_count(struct gk20a *g);
u32 nvgpu_ltc_get_slices_per_ltc(struct gk20a *g);
u32 nvgpu_ltc_get_cacheline_size(struct gk20a *g);
Removed redudnant ltc.init_fs_state call from vgpu init
sequence since it is getting called from nvgpu_init_ltc_support.
NVGPU-2044
Change-Id: I3c256dc3866f894c38715aa2609e85bd2e5cfe5a
Signed-off-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2073417
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Remove below variables from struct gr_gk20a
u32 bundle_cb_default_size;
u32 min_gpm_fifo_depth;
u32 bundle_cb_token_limit;
u32 attrib_cb_default_size;
u32 alpha_cb_default_size;
u32 attrib_cb_gfxp_default_size;
u32 attrib_cb_gfxp_size;
u32 attrib_cb_size;
u32 alpha_cb_size;
Instead add below hals in hal.gr.init unit to get all of above sizes
u32 (*get_bundle_cb_default_size)(struct gk20a *g);
u32 (*get_min_gpm_fifo_depth)(struct gk20a *g);
u32 (*get_bundle_cb_token_limit)(struct gk20a *g);
u32 (*get_attrib_cb_default_size)(struct gk20a *g);
u32 (*get_alpha_cb_default_size)(struct gk20a *g);
u32 (*get_attrib_cb_gfxp_default_size)(struct gk20a *g);
u32 (*get_attrib_cb_gfxp_size)(struct gk20a *g);
u32 (*get_attrib_cb_size)(struct gk20a *g, u32 tpc_count);
u32 (*get_alpha_cb_size)(struct gk20a *g, u32 tpc_count);
u32 (*get_global_attr_cb_size)(struct gk20a *g, u32 max_tpc);
Define these hals for all gm20b/gp10b/gv11b/gv100/tu104 chips
Also add hal.gr.init support for gv100 chip
Remove all accesses to variables from struct gr_gk20a and start using
newly defined hals
Remove below hals to initialize sizes since they are no more required
g->ops.gr.bundle_cb_defaults(g);
g->ops.gr.cb_size_default(g);
g->ops.gr.calc_global_ctx_buffer_size(g);
Also remove definitions of above hals from all the chip files
Jira NVGPU-2961
Change-Id: I130b578ababf22328d68fe19df581e46aebeccc9
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2077214
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- Make a new structure: nvgpu_pmu_pg for PG unit
- This new struct combines all PG unit variables like
elpg_stat, elpg_refcnt, pg_init etc. into one
structure as a part of PG unit refactoring.
- Use pmu_pg struct to access all PG variables.
- Eg: &pmu->pmu_pg.elpg_mutex, &pmu->pmu_pg.pg_mutex
and so on.
NVGPU-1973
Change-Id: I9973072826f4089f6315827bce49fa30dbcbcdda
Signed-off-by: Divya Singhatwaria <dsinghatwari@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2071306
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Add nvgpu_tsg_set_error_notifier function for setting error_notifier
for all channels of a tsg.
Add nvgpu_tsg_timeout_debug_dump_state function for finding if
timeout_debug_dump is set for any of the channels of a tsg.
Add nvgpu_tsg_set_timeout_accumulated_ms to set
timeout_accumulated_ms for all the channels of a tsg.
JIRA NVGPU-1312
Change-Id: Ib2daf2d462c2cf767f5a6e6fd3436abf6860091d
Signed-off-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2077626
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Add new hal fifo_access to control the gr_gpfifo_ctl_r register to
enable or disable the access bit and semaphore access bit.
g->ops.gr.init.fifo_access function call with true or false
parameter to enable or disable the fifo_access.
JIRA NVGPU-2951
Change-Id: I67ad7ce9f176d7ce347e8acb425f7a4bb9e088ca
Signed-off-by: Vinod G <vinodg@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2077705
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init_pbdma_intr_descs HAL ops is used to update the internal values of
the struct intr within struct fifo_gk20a. Three kinds of
intr_descriptors are filled i.e. device_fatal_0, channel_fatal_0 and
restartable_0. Breaking them into separate HALs has the advantage of
reusing the h/w headers corresponding to the device_fatal_0 as they are
same across all the architectures while those of channel_fatal_0 varies.
Another advantage is to now decouple pbdma from filling in values
within the fifo_gk20a struct. A new method gk20a_fifo_init_pbdma_descs
is constructed that initializes the above intr struct by calling the
separate HAL ops for these.
Jira NVGPU-2950
Change-Id: I78ddc61a5d9b2088d34259af90f8b85817bf19d9
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2072741
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The following HAL pointers are moved to a separate HAL unit named pbdma.
pbdma_acquire_val
get_pbdma_signature
dump_pbdma_status
handle_pbdma_intr_0
handle_pbdma_intr_1
read_pbdma_data
reset_pbdma_header
The functions corresponding to these HAL units are also moved to
pbdma_{arch} files under hal/fifo correspondinging to arch gm20b,
gp10b, gv11b and tu104. Any calls to gk20a_readl and gk20a_writel
are replaced by nvgpu_readl and nvgpu_writel respectively.
Jira NVGPU-2950
Change-Id: I9723f30ddf6582df02c03fceb1fba26a206e1230
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2071782
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Move load_tpc_mask and setup_rop_mapping hal functions to hal.gr.init.
Existing load_tpc_mask hal code is split to two parts, one as a common
code in gr_load_tpc_mask and register write to init.tpc_mask hal
functions.
Modify pd_tpc_per_gpc and pd_skip_table_gpc hals in the
hal.gr.init to pass struct nvgpu_gr_config as a parameter.
JIRA NVGPU-2951
Change-Id: I52e26d0f023afa511a8cf8c3e4c54f45350be4ae
Signed-off-by: Vinod G <vinodg@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2074892
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nvgpu_gr_ctx_load_golden_ctx_image() in common.gr.ctx unit programs
initial pm_mode in context. gk20a_alloc_obj_ctx() then disables pm_mode
ctxsw by default.
Fix this by disabling pm_mode ctxsw by default in
nvgpu_gr_ctx_load_golden_ctx_image() itself. Remove corresponding code
from gk20a_alloc_obj_ctx()
Jira NVGPU-1887
Change-Id: I6e1f83cefcb6229394da353e4cd87f1f5a0b10d4
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2076273
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Add new hals in unit hal.gr.init to commit RTV circular buffer
g->ops.gr.init.commit_rtv_cb()
g->ops.gr.init.commit_gfxp_rtv_cb()
Remove tu104 hal to commit global ctx buffers
gr_tu104_commit_global_ctx_buffers() since we have specific hals to
commit RTB circular buffer
Update gr_gk20a_commit_global_ctx_buffers() to directly call
hal.gr.init hals to commit RTV buffers
Jira NVGPU-2961
Change-Id: I12a53386654ebfeb98bf187385bb8b839070d569
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2075230
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Add a new hal.gr.init unit hal g->ops.gr.init.get_rtv_cb_size() to
retrieve RTV buffer size
Update gr_gk20a_alloc_global_ctx_buffers() to initialize RTV buffer
size if g->ops.gr.init.get_rtv_cb_size hal is present
Remove gr_tu104_alloc_global_ctx_buffers() since it is no longer
required
Jira NVGPU-2961
Change-Id: I44be8dfdda5c813eac445192635a3a6c2b867b3a
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2075229
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Move g->ops.gr.commit_global_timeslice() hal operation to hal.gr.init
unit as g->ops.gr.init.commit_global_timeslice()
Drop channel pointer in parameter list since it was unused
Also change return type to void since it never returns error
Move corresponding gm20b and gv11b hal operations to hal.gr.init unit
Jira NVGPU-2961
Change-Id: I68deef45af1d52149eb354a1478cc2b5f2e4ec2a
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2075228
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Add a new hal operation g->ops.gr.init.load_method_init() in hal.gr.init
unit that reads method init netlist bundle and writes those values to
h/w appropriately
Use new hal in gr_gk20a_init_golden_ctx_image() instead of direct
register accesses
Jira NVGPU-2961
Change-Id: If1edd09445e55b5ad9cb1ec7b0f32cab9bfd6f05
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2075227
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Native and vgpu were using different paths for fifo
init/deinit code.
Use same nvgpu_fifo_init_support for init code:
nvgpu_fifo_init_support
g->ops.fifo.setup_sw
vgpu_fifo_setup_sw (NEW)
Use same nvgpu_fifo_remove_support for deinit code:
nvgpu_fifo_remove_support (NEW)
g->ops.fifo.cleanup_sw (NEW)
vgpu_fifo_cleanup_sw (NEW)
Also implemented gk20a_fifo_cleanup_sw for native case.
Jira NVGPU-1306
Jira NVGPU-2855
Change-Id: Iefe303cc224f804a206422e2efffda9da1616d89
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2029649
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Moved cbc related code and data from gr to cbc unit.
Ltc and cbc related data is moved from gr header:
1. Ltc related data moved from gr_gk20a -> gk20a and it
will be moved eventually to ltc unit:
u32 slices_per_ltc;
u32 cacheline_size;
2. cbc data moved from gr_gk20a -> nvgpu_cbc
u32 compbit_backing_size;
u32 comptags_per_cacheline;
u32 gobs_per_comptagline_per_slice;
u32 max_comptag_lines;
struct gk20a_comptag_allocator comp_tags;
struct compbit_store_desc compbit_store;
3. Following config data moved gr_gk20a -> gk20a
u32 comptag_mem_deduct;
u32 max_comptag_mem;
These are part of initial config which should be available
during nvgpu_probe. So it can't be moved to nvgpu_cbc.
Modified code to use above updated data structures.
Removed cbc init sequence from gr and added in
common cbc unit. This sequence is getting called
from common nvgpu init code.
JIRA NVGPU-2896
JIRA NVGPU-2897
Change-Id: I1a1b1e73b75396d61de684f413ebc551a1202a57
Signed-off-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2033286
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
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Add new hal operation g->ops.gr.init.fe_go_idle_timeout() in hal.gr.init
unit to enable/disable fe_go_idle timeout
Use this hal in gr_gk20a_init_golden_ctx_image() instead of direct
register access
Remove timeout disable/enable code in gk20a_init_sw_bundle() since
parent API gr_gk20a_init_golden_ctx_image() is already taking care of
that
Jira NVGPU-2961
Change-Id: Ice72699059f031ca0b1994fa57661716a6c66cd2
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2072550
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Move GR HAL operation g->ops.gr.init_preemption_state() to hal.gr.init
unit as g->ops.gr.init.preemption_state()
Create hal.gr.init unit files for gp10b and gv11b and copy over
corresponding functions to new files
This API now takes gfxp_wfi_timeout_unit and gfxp_wfi_timeout_count as
parameter
Define gfxp_wfi_timeout_unit in struct gr_gk20a as a boolean flag named
gfxp_wfi_timeout_unit_usec
Remove GFXP_WFI_TIMEOUT_UNIT_SYSCLK/USEC macros
Jira NVGPU-2961
Change-Id: I4347b1e30c86c231e44cf274adccd8c70addcdab
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2072549
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Move g->ops.fecs_trace.*() HAL operations under gr operations as
g->ops.gr.fecs_trace.*()
Also rename gk20a_ctxsw_*() functions used in common code to the
format nvgpu_gr_fecs_trace_*()
Jira NVGPU-1880
Change-Id: Idf2f8fb3d7ba2832bf1837fd97b70b3cee412123
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2070767
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We have 3 header files for FECS tracing support
include/nvgpu/gr/fecs_trace.h : common header
include/nvgpu/ctxsw_trace.h : header that includes both common and
os-specific functions
os/linux/ctxsw_trace.h : linux specific header
Remove the second header since it is not needed.
Move all structures that are needed in common code to
include/nvgpu/gr/fecs_trace.h
Move all function declarations that are needed in common code to
include/nvgpu/gr/fecs_trace.h
Move all linux specific declarations in os/linux/ctxsw_trace.h and
rename this file as os/linux/fecs_trace_linux.h
Also rename os/linux/ctxsw_trace.c to os/linux/fecs_trace_linux.c
Jira NVGPU-1880
Change-Id: I05cc4489c4b6a64880b7d59c02b22cd2244d5e22
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2070766
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
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This struct was earlier moved to falcon_priv.h to give exclusive access
to only falcon unit. However with HAL unit needing access to this we
need to move it public header nvgpu/falcon.h.
JIRA NVGPU-1993
Change-Id: Ia3b211798009107f64828c9765040d628448812a
Signed-off-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2069688
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Add fifo sub-unit to common.fifo to handle init/deinit code
and global support functions.
Split init into:
- nvgpu_channel_setup_sw
- nvgpu_tsg_setup_sw
- nvgpu_fifo_setup_sw
- nvgpu_runlist_setup_sw
- nvgpu_engine_setup_sw
- nvgpu_userd_setup_sw
- nvgpu_pbdma_setup_sw
Split de-init into
- nvgpu_channel_cleanup_sw
- nvgpu_tsg_cleanup_sw
- nvgpu_fifo_cleanup_sw
- nvgpu_runlist_cleanup_sw
- nvgpu_engine_cleanup_sw
- nvgpu_userd_cleanup_sw
- nvgpu_pbdma_cleanup_sw
Added the following HALs
- runlist.length_max
- fifo.init_pbdma_info
- fifo.userd_entry_size
Last 2 HALs should be moved resp. to pbdma and userd sub-units,
when available.
Added vgpu implementation of above hals
- vgpu_runlist_length_max
- vgpu_userd_entry_size
- vgpu_channel_count
Use hals in vgpu_fifo_setup_sw.
Jira NVGPU-1306
Change-Id: I954f56be724eee280d7b5f171b1790d33c810470
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2029620
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Register write from gr_gk20a_init_fs_state function are moved to hal.
New hal added for setting the pd_tpc_per_gpc, pd_skip_table_gpc and
cwd_gpcs_tpcs_num.
pd_tpc_per_gpc helps to describe the number of tpcs in each logical
gpc.
pd_skip_table helps to skip certain TPCs during distribution.
cwd_gpcs_tpcs_num helps to set number of tpcs and gpcs in CWD.
remove write for depreciated NV_PBE_PRI_ZROP_SETTING_NUM_ACTIVE_FBPS
and NV_PBE_PRI_CROP_SETTINS_NUM_ACTIVE_FBPS fields from
BES_ZROP_SETTINGS and BES_CROP_SETTINGS registers. Both these fields
changed to NUM_ACTIVE_LTCS from gm20b onwards and those are being
set in existing hal functions.
JIRA NVGPU-2951
Change-Id: I905b98356e8eadaf7e2481850de841c050ea50c5
Signed-off-by: Vinod G <vinodg@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2072249
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create new hals for wait_idle and wait_fe_idle under gr.init.
modify functions to following hals and use same hals for all chips.
gr_gk20a_wait_idle -> gm20b_gr_init_wait_idle
gr_gk20a_wait_fe_idle -> gm20b_gr_init_wait_fe_idle
JIRA NVGPU-2951
Change-Id: Ie60675a08cba12e31557711b6f05f06879de8965
Signed-off-by: Vinod G <vinodg@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2072051
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gr_gk20a_init_golden_ctx_image() right now resets sys/gpc/be units by
directly accessing gr_fecs_ctxsw_reset_ctl_r() register
Move this register write/read sequence to common.hal.gr.init unit
through HAL operation g->ops.gr.init.override_context_reset()
Use new HAL in gr_gk20a_init_golden_ctx_image()
Also fix the delay() operations. delay() should be added before we read
back gr_fecs_ctxsw_reset_ctl_r() register and not after
Jira NVGPU-2961
Change-Id: I70d3a61b5aa60846815dee52ecac544066542695
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2070608
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Add new HAL unit common.hal.gr.init with below source files
hal/gr/init/gr_init_gm20b.c
hal/gr/init/gr_init_gm20b.h
In gr_gk20a_init_golden_ctx_image() we force FE power mode on and also
disable it. Extract out this sequence into new unit and expose new HAL
operation that takes a boolean flag to enable/disable power mode
g->ops.gr.init.fe_pwr_mode_force_on()
Use new HAL operation in gr_gk20a_init_golden_ctx_image()
Set this HAL for all the chips
Jira NVGPU-2961
Change-Id: I1dd35d94fda5e5296af67c0abc944e200fb752ea
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2070607
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Rename gr_reset_mutex to engines_reset_mutex and acquire it
before initiating recovery. Recovery running in parallel with
engine reset is not recommended.
On hitting engine reset, h/w drops the ctxsw_status to INVALID in
fifo_engine_status register. Also while the engine is held in reset
h/w passes busy/idle straight through. fifo_engine_status registers
are correct in that there is no context switch outstanding
as the CTXSW is aborted when reset is asserted.
Use deferred_reset_mutex to protect deferred_reset_pending variable
If deferred_reset_pending is true then acquire engines_reset_mutex
and call gk20a_fifo_deferred_reset.
gk20a_fifo_deferred_reset would also check the value of
deferred_reset_pending before initiating reset process
Bug 2092051
Bug 2429295
Bug 2484211
Bug 1890287
Change-Id: I47de669a6203e0b2e9a8237ec4e4747339b9837c
Signed-off-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2022373
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
set gr.initialized to false in the beginning of gk20a_gr_reset() and
set it to true at the end of successful execution of gk20a_gr_reset.
Use gk20a_gr_wait_initialized() to enable/disable cg/pg
functions to make sure engine is out of reset and initialized.
Bug 2092051
Bug 2429295
Bug 2484211
Bug 1890287
Change-Id: Ic7b0b71382c6d852a625c603dad8609c43b7f20f
Signed-off-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2030827
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
if fecs is sent stop_ctxsw method, elpg entry/exit cannot happen
and may timeout. It could manifest as different error signatures
depending on when stop_ctxsw fecs method gets sent with respect
to pmu elpg sequence. It could come as pmu halt or abort or
maybe ext error too.
If ctxsw failed to disable, do not read engine info and just abort tsg.
Bug 2092051
Bug 2429295
Bug 2484211
Bug 1890287
Change-Id: I5f3ba07663bcafd3f0083d44c603420b0ccf6945
Signed-off-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2014914
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
For handle_sched_error, change err to info print for failing eng
id returned as -1 i.e. FIFO_INVAL_ENGINE_ID as no engine is found
busy doing ctxsw. May be ctxsw already finished for the context
for which ctxsw timeout intr was triggered.
Possible Causes:
a)
On hitting engine reset, h/w drops the ctxsw_status to INVALID in
fifo_engine_status register. Also while the engine is held in reset
h/w passes busy/idle straight through. fifo_engine_status registers
are correct in that there is no context switch outstanding
as the CTXSW is aborted when reset is asserted.
This is just a side effect of how gv100 and earlier versions of
ctxsw_timeout behave.
With gv10b and later, h/w snaps the context at the point of error
so that s/w can see the tsg_id which caused the HW timeout.
b)
If engines are not busy and ctxsw state is valid then intr occurred
in the past and if the ctxsw state has moved on to VALID from LOAD
or SAVE, it means that whatever timed out eventually finished
anyways. The problem with this is that s/w cannot conclude which
context caused the problem as maybe more switches occurred before
intr is handled.
Bug 2092051
Bug 2429295
Bug 2484211
Bug 1890287
Change-Id: Ia79bee6e860fb179ee39024c963671d4f8245227
Signed-off-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2030866
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
