| 24079ed2 | 24-Jan-2025 |
Zhi Wang <[email protected]> |
drm/nouveau: consume the return of large GSP message
As the GSP message recv path is able to handle the return of large GSP
message, consume the return of large GSP message in the sending path.
Sig
drm/nouveau: consume the return of large GSP message
As the GSP message recv path is able to handle the return of large GSP
message, consume the return of large GSP message in the sending path.
Signed-off-by: Zhi Wang <[email protected]>
Signed-off-by: Danilo Krummrich <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
show more ...
|
| 50f29005 | 24-Jan-2025 |
Zhi Wang <[email protected]> |
drm/nouveau: support handling the return of large GSP message
The max GSP message element size is 16 pages (including the headers). To
send a message larger than 16 pages, nvkm should split it into
drm/nouveau: support handling the return of large GSP message
The max GSP message element size is 16 pages (including the headers). To
send a message larger than 16 pages, nvkm should split it into multiple
and send them accordingly. The first element has the expected function
number, while the rest are sent with function number as
NV_VGPU_MSG_FUNCTION_CONTINUATION_RECORD. GSP consumes the elements from
the cmdq and always writes the result back to the msgq. The result is also
formed as split elements.
However, nvkm is able to split the large GSP message and send them, but
totally not aware of handling the return of the large GSP message, which
are the split elements in the msgq. Thus, it keeps dumping the unknown RPC
messages from msgq, which is actually CONTINUATION_RECORD message,
discard them unexpectedly. Thus, the caller will not be able to consume
the result from GSP.
Introduce the handling of the return of large GSP message on the msgq path.
Slightly re-factor the low-level part of msg receiving routines. Merge the
split elements back into a large element before handling it to the upper
level. Thus, the upper-level of GSP RPC APIs don't need to be heavily
changed.
Signed-off-by: Zhi Wang <[email protected]>
Signed-off-by: Danilo Krummrich <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
show more ...
|
| 3c48ecb3 | 24-Jan-2025 |
Zhi Wang <[email protected]> |
drm/nouveau: factor out r535_gsp_msgq_recv_one_elem()
Prepare for supporting receive the large GSP RPC message.
Factor out r535_gsp_msgq_recv_one_elem(). Fold its params into a data
structure of pa
drm/nouveau: factor out r535_gsp_msgq_recv_one_elem()
Prepare for supporting receive the large GSP RPC message.
Factor out r535_gsp_msgq_recv_one_elem(). Fold its params into a data
structure of params. Move the allocation of the GSP RPC message to its
caller. Refine the variable names in the re-factor.
No functional change is intended.
Signed-off-by: Zhi Wang <[email protected]>
Signed-off-by: Danilo Krummrich <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
show more ...
|
| c965e359 | 24-Jan-2025 |
Zhi Wang <[email protected]> |
drm/nouveau: factor out r535_gsp_msgq_peek()
To receive a GSP message queue element from the GSP status queue, the
driver needs to make sure there are available elements in the queue.
The previous
drm/nouveau: factor out r535_gsp_msgq_peek()
To receive a GSP message queue element from the GSP status queue, the
driver needs to make sure there are available elements in the queue.
The previous r535_gsp_msgq_wait() consists of three functions, which is
a little too complicated for a single function:
- wait for an available element.
- peek the message element header in the queue.
- recevice the element from the queue.
Factor out r535_gsp_msgq_peek() and divide the functions in
r535_gsp_msgq_wait() into three functions.
No functional change is intended.
Cc: Danilo Krummrich <[email protected]>
Signed-off-by: Zhi Wang <[email protected]>
Signed-off-by: Danilo Krummrich <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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|
| 1829ee0b | 24-Jan-2025 |
Zhi Wang <[email protected]> |
drm/nouveau: rename the variable "cmd" to "msg" in r535_gsp_cmdq_{get, push}()
Refine the name to align with the terms in the kernel doc.
No functional change is intended.
Signed-off-by: Zhi Wang
drm/nouveau: rename the variable "cmd" to "msg" in r535_gsp_cmdq_{get, push}()
Refine the name to align with the terms in the kernel doc.
No functional change is intended.
Signed-off-by: Zhi Wang <[email protected]>
Signed-off-by: Danilo Krummrich <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
show more ...
|
| 46244504 | 24-Jan-2025 |
Zhi Wang <[email protected]> |
drm/nouveau: refine the variable names in r535_gsp_msg_recv()
The variable "msg" in r535_gsp_msg_recv() actually means the GSP RPC.
Refine the names to align with the terms in the kernel doc.
No f
drm/nouveau: refine the variable names in r535_gsp_msg_recv()
The variable "msg" in r535_gsp_msg_recv() actually means the GSP RPC.
Refine the names to align with the terms in the kernel doc.
No functional change is intended.
Signed-off-by: Zhi Wang <[email protected]>
Signed-off-by: Danilo Krummrich <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
show more ...
|
| 0268040b | 24-Jan-2025 |
Zhi Wang <[email protected]> |
drm/nouveau: refine the variable names in r535_gsp_rpc_push()
The variable names in r535_gsp_rpc_push() are quite confusing and some
of them are not representing what they really are.
Update the na
drm/nouveau: refine the variable names in r535_gsp_rpc_push()
The variable names in r535_gsp_rpc_push() are quite confusing and some
of them are not representing what they really are.
Update the names and explanations in the decoder section of the
kernel doc. Refine the names to align with the terms in the kernel doc.
No functional change is intended.
Signed-off-by: Zhi Wang <[email protected]>
Signed-off-by: Danilo Krummrich <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
show more ...
|
| 1bb9bb50 | 24-Jan-2025 |
Zhi Wang <[email protected]> |
drm/nouveau: remove the magic number in r535_gsp_rpc_push()
There has been a GSP_MSG_MAX_SIZE which represents the max size of a GSP
message element header. Use it instead of a magic number.
No fun
drm/nouveau: remove the magic number in r535_gsp_rpc_push()
There has been a GSP_MSG_MAX_SIZE which represents the max size of a GSP
message element header. Use it instead of a magic number.
No functional change is intended.
Signed-off-by: Zhi Wang <[email protected]>
Signed-off-by: Danilo Krummrich <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
show more ...
|
| bbae6680 | 24-Jan-2025 |
Zhi Wang <[email protected]> |
drm/nouveau: fix the broken marco GSP_MSG_MAX_SIZE
The macro GSP_MSG_MAX_SIZE refers to another macro that doesn't exist.
It represents the max GSP message element size.
Fix the broken marco so it
drm/nouveau: fix the broken marco GSP_MSG_MAX_SIZE
The macro GSP_MSG_MAX_SIZE refers to another macro that doesn't exist.
It represents the max GSP message element size.
Fix the broken marco so it can be used to replace some magic numbers in
the code.
Signed-off-by: Zhi Wang <[email protected]>
Signed-off-by: Danilo Krummrich <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
show more ...
|
| bda6fe81 | 24-Jan-2025 |
Zhi Wang <[email protected]> |
drm/nouveau: rename "argc" to what it represents in GSP RPC routines
The name "argc" has different meanings in different functions.
To improve the readability, it's better to refine it to a name th
drm/nouveau: rename "argc" to what it represents in GSP RPC routines
The name "argc" has different meanings in different functions.
To improve the readability, it's better to refine it to a name that
reflects what it represents.
Rename "argc" to what it represents. Add terms in the decoder section to
explain their meaning.
No functional change is intended.
Signed-off-by: Zhi Wang <[email protected]>
[ Fix indentation. - Danilo ]
Signed-off-by: Danilo Krummrich <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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|
| 0c2f211b | 24-Jan-2025 |
Zhi Wang <[email protected]> |
drm/nouveau: rename "argv" to what it represents in *rm_{alloc, ctrl}_*()
The name "argv" has different meanings in different functions.
To improve the readability, it's better to refine it to a na
drm/nouveau: rename "argv" to what it represents in *rm_{alloc, ctrl}_*()
The name "argv" has different meanings in different functions.
To improve the readability, it's better to refine it to a name that
reflects what it represents.
Rename "argv" to what it represents. Wrap the long container_of() into
to_payload_header() to denote a clear meaning and make checkpatch.pl
happy.
No functional change is intended.
Signed-off-by: Zhi Wang <[email protected]>
Signed-off-by: Danilo Krummrich <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
show more ...
|
| 2c6a79af | 24-Jan-2025 |
Zhi Wang <[email protected]> |
drm/nouveau: rename "argv" to what it represents on the GSP message send path
The name "argv" has different meanings in different functions.
To improve the readability, it's better to refine it to
drm/nouveau: rename "argv" to what it represents on the GSP message send path
The name "argv" has different meanings in different functions.
To improve the readability, it's better to refine it to a name that
reflects what it represents.
Rename "repc" to what it represents in the GSP message send path.
Wrap the long container_of() into to_gsp_hdr() to make checkpatch.pl
happy.
No functional change is intended.
Signed-off-by: Zhi Wang <[email protected]>
Signed-off-by: Danilo Krummrich <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
show more ...
|
| f98ed88e | 24-Jan-2025 |
Zhi Wang <[email protected]> |
drm/nouveau: rename "repc" to "gsp_rpc_len" on the GSP message recv path
The name "repc" has different meanings in different contexts.
To improve the readability, it's better to refine it to a name
drm/nouveau: rename "repc" to "gsp_rpc_len" on the GSP message recv path
The name "repc" has different meanings in different contexts.
To improve the readability, it's better to refine it to a name that
reflects what it actually represents.
Rename "repc" to "gsp_rpc_len" in the GSP message recv path. Add an
section in the doc to explain the terms.
No functional change is intended.
Cc: Danilo Krummrich <[email protected]>
Signed-off-by: Zhi Wang <[email protected]>
Signed-off-by: Danilo Krummrich <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
show more ...
|
| 214c9539 | 30-Oct-2024 |
Timur Tabi <[email protected]> |
drm/nouveau: expose GSP-RM logging buffers via debugfs
The LOGINIT, LOGINTR, LOGRM, and LOGPMU buffers are circular buffers
that have printf-like logs from GSP-RM and PMU encoded in them.
LOGINIT,
drm/nouveau: expose GSP-RM logging buffers via debugfs
The LOGINIT, LOGINTR, LOGRM, and LOGPMU buffers are circular buffers
that have printf-like logs from GSP-RM and PMU encoded in them.
LOGINIT, LOGINTR, and LOGRM are allocated by Nouveau and their DMA
addresses are passed to GSP-RM during initialization. The buffers are
required for GSP-RM to initialize properly.
LOGPMU is also allocated by Nouveau, but its contents are updated
when Nouveau receives an NV_VGPU_MSG_EVENT_UCODE_LIBOS_PRINT RPC from
GSP-RM. Nouveau then copies the RPC to the buffer.
The messages are encoded as an array of variable-length structures that
contain the parameters to an NV_PRINTF call. The format string and
parameter count are stored in a special ELF image that contains only
logging strings. This image is not currently shipped with the Nvidia
driver.
There are two methods to extract the logs.
OpenRM tries to load the logging ELF, and if present, parses the log
buffers in real time and outputs the strings to the kernel console.
Alternatively, and this is the method used by this patch, the buffers
can be exposed to user space, and a user-space tool (along with the
logging ELF image) can parse the buffer and dump the logs.
This method has the advantage that it allows the buffers to be parsed
even when the logging ELF file is not available to the user. However,
it has the disadvantage the debugfs entries need to remain until the
driver is unloaded.
The buffers are exposed via debugfs. If GSP-RM fails to initialize, then
Nouveau immediately shuts down the GSP interface. This would normally
also deallocate the logging buffers, thereby preventing the user from
capturing the debug logs.
To avoid this, introduce the keep-gsp-logging command line parameter. If
specified, and if at least one logging buffer has content, then Nouveau
will migrate these buffers into new debugfs entries that are retained
until the driver unloads.
An end-user can capture the logs using the following commands:
cp /sys/kernel/debug/nouveau/<path>/loginit loginit
cp /sys/kernel/debug/nouveau/<path>/logrm logrm
cp /sys/kernel/debug/nouveau/<path>/logintr logintr
cp /sys/kernel/debug/nouveau/<path>/logpmu logpmu
where (for a PCI device) <path> is the PCI ID of the GPU (e.g.
0000:65:00.0).
Since LOGPMU is not needed for normal GSP-RM operation, it is only
created if debugfs is available. Otherwise, the
NV_VGPU_MSG_EVENT_UCODE_LIBOS_PRINT RPCs are ignored.
A simple way to test the buffer migration feature is to have
nvkm_gsp_init() return an error code.
Tested-by: Ben Skeggs <[email protected]>
Signed-off-by: Timur Tabi <[email protected]>
Signed-off-by: Danilo Krummrich <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
show more ...
|
| 01ed662b | 17-Oct-2024 |
Zhi Wang <[email protected]> |
nvkm: correctly calculate the available space of the GSP cmdq buffer
r535_gsp_cmdq_push() waits for the available page in the GSP cmdq
buffer when handling a large RPC request. When it sees at least
nvkm: correctly calculate the available space of the GSP cmdq buffer
r535_gsp_cmdq_push() waits for the available page in the GSP cmdq
buffer when handling a large RPC request. When it sees at least one
available page in the cmdq, it quits the waiting with the amount of
free buffer pages in the queue.
Unfortunately, it always takes the [write pointer, buf_size) as
available buffer pages before rolling back and wrongly calculates the
size of the data should be copied. Thus, it can overwrite the RPC
request that GSP is currently reading, which causes GSP hang due
to corrupted RPC request:
[ 549.209389] ------------[ cut here ]------------
[ 549.214010] WARNING: CPU: 8 PID: 6314 at drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c:116 r535_gsp_msgq_wait+0xd0/0x190 [nvkm]
[ 549.225678] Modules linked in: nvkm(E+) gsp_log(E) snd_seq_dummy(E) snd_hrtimer(E) snd_seq(E) snd_timer(E) snd_seq_device(E) snd(E) soundcore(E) rfkill(E) qrtr(E) vfat(E) fat(E) ipmi_ssif(E) amd_atl(E) intel_rapl_msr(E) intel_rapl_common(E) mlx5_ib(E) amd64_edac(E) edac_mce_amd(E) kvm_amd(E) ib_uverbs(E) kvm(E) ib_core(E) acpi_ipmi(E) ipmi_si(E) mxm_wmi(E) ipmi_devintf(E) rapl(E) i2c_piix4(E) wmi_bmof(E) joydev(E) ptdma(E) acpi_cpufreq(E) k10temp(E) pcspkr(E) ipmi_msghandler(E) xfs(E) libcrc32c(E) ast(E) i2c_algo_bit(E) crct10dif_pclmul(E) drm_shmem_helper(E) nvme_tcp(E) crc32_pclmul(E) ahci(E) drm_kms_helper(E) libahci(E) nvme_fabrics(E) crc32c_intel(E) nvme(E) cdc_ether(E) mlx5_core(E) nvme_core(E) usbnet(E) drm(E) libata(E) ccp(E) ghash_clmulni_intel(E) mii(E) t10_pi(E) mlxfw(E) sp5100_tco(E) psample(E) pci_hyperv_intf(E) wmi(E) dm_multipath(E) sunrpc(E) dm_mirror(E) dm_region_hash(E) dm_log(E) dm_mod(E) be2iscsi(E) bnx2i(E) cnic(E) uio(E) cxgb4i(E) cxgb4(E) tls(E) libcxgbi(E) libcxgb(E) qla4xxx(E)
[ 549.225752] iscsi_boot_sysfs(E) iscsi_tcp(E) libiscsi_tcp(E) libiscsi(E) scsi_transport_iscsi(E) fuse(E) [last unloaded: gsp_log(E)]
[ 549.326293] CPU: 8 PID: 6314 Comm: insmod Tainted: G E 6.9.0-rc6+ #1
[ 549.334039] Hardware name: ASRockRack 1U1G-MILAN/N/ROMED8-NL, BIOS L3.12E 09/06/2022
[ 549.341781] RIP: 0010:r535_gsp_msgq_wait+0xd0/0x190 [nvkm]
[ 549.347343] Code: 08 00 00 89 da c1 e2 0c 48 8d ac 11 00 10 00 00 48 8b 0c 24 48 85 c9 74 1f c1 e0 0c 4c 8d 6d 30 83 e8 30 89 01 e9 68 ff ff ff <0f> 0b 49 c7 c5 92 ff ff ff e9 5a ff ff ff ba ff ff ff ff be c0 0c
[ 549.366090] RSP: 0018:ffffacbccaaeb7d0 EFLAGS: 00010246
[ 549.371315] RAX: 0000000000000000 RBX: 0000000000000012 RCX: 0000000000923e28
[ 549.378451] RDX: 0000000000000000 RSI: 0000000055555554 RDI: ffffacbccaaeb730
[ 549.385590] RBP: 0000000000000001 R08: ffff8bd14d235f70 R09: ffff8bd14d235f70
[ 549.392721] R10: 0000000000000002 R11: ffff8bd14d233864 R12: 0000000000000020
[ 549.399854] R13: ffffacbccaaeb818 R14: 0000000000000020 R15: ffff8bb298c67000
[ 549.406988] FS: 00007f5179244740(0000) GS:ffff8bd14d200000(0000) knlGS:0000000000000000
[ 549.415076] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 549.420829] CR2: 00007fa844000010 CR3: 00000001567dc005 CR4: 0000000000770ef0
[ 549.427963] PKRU: 55555554
[ 549.430672] Call Trace:
[ 549.433126] <TASK>
[ 549.435233] ? __warn+0x7f/0x130
[ 549.438473] ? r535_gsp_msgq_wait+0xd0/0x190 [nvkm]
[ 549.443426] ? report_bug+0x18a/0x1a0
[ 549.447098] ? handle_bug+0x3c/0x70
[ 549.450589] ? exc_invalid_op+0x14/0x70
[ 549.454430] ? asm_exc_invalid_op+0x16/0x20
[ 549.458619] ? r535_gsp_msgq_wait+0xd0/0x190 [nvkm]
[ 549.463565] r535_gsp_msg_recv+0x46/0x230 [nvkm]
[ 549.468257] r535_gsp_rpc_push+0x106/0x160 [nvkm]
[ 549.473033] r535_gsp_rpc_rm_ctrl_push+0x40/0x130 [nvkm]
[ 549.478422] nvidia_grid_init_vgpu_types+0xbc/0xe0 [nvkm]
[ 549.483899] nvidia_grid_init+0xb1/0xd0 [nvkm]
[ 549.488420] ? srso_alias_return_thunk+0x5/0xfbef5
[ 549.493213] nvkm_device_pci_probe+0x305/0x420 [nvkm]
[ 549.498338] local_pci_probe+0x46/0xa0
[ 549.502096] pci_call_probe+0x56/0x170
[ 549.505851] pci_device_probe+0x79/0xf0
[ 549.509690] ? driver_sysfs_add+0x59/0xc0
[ 549.513702] really_probe+0xd9/0x380
[ 549.517282] __driver_probe_device+0x78/0x150
[ 549.521640] driver_probe_device+0x1e/0x90
[ 549.525746] __driver_attach+0xd2/0x1c0
[ 549.529594] ? __pfx___driver_attach+0x10/0x10
[ 549.534045] bus_for_each_dev+0x78/0xd0
[ 549.537893] bus_add_driver+0x112/0x210
[ 549.541750] driver_register+0x5c/0x120
[ 549.545596] ? __pfx_nvkm_init+0x10/0x10 [nvkm]
[ 549.550224] do_one_initcall+0x44/0x300
[ 549.554063] ? do_init_module+0x23/0x240
[ 549.557989] do_init_module+0x64/0x240
Calculate the available buffer page before rolling back based on
the result from the waiting.
Signed-off-by: Zhi Wang <[email protected]>
Signed-off-by: Danilo Krummrich <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
show more ...
|
| 6f572a80 | 29-Apr-2024 |
Lyude Paul <[email protected]> |
drm/nouveau/gsp: Use the sg allocator for level 2 of radix3
Currently we allocate all 3 levels of radix3 page tables using
nvkm_gsp_mem_ctor(), which uses dma_alloc_coherent() for allocating all of
drm/nouveau/gsp: Use the sg allocator for level 2 of radix3
Currently we allocate all 3 levels of radix3 page tables using
nvkm_gsp_mem_ctor(), which uses dma_alloc_coherent() for allocating all of
the relevant memory. This can end up failing in scenarios where the system
has very high memory fragmentation, and we can't find enough contiguous
memory to allocate level 2 of the page table.
Currently, this can result in runtime PM issues on systems where memory
fragmentation is high - as we'll fail to allocate the page table for our
suspend/resume buffer:
kworker/10:2: page allocation failure: order:7, mode:0xcc0(GFP_KERNEL),
nodemask=(null),cpuset=/,mems_allowed=0
CPU: 10 PID: 479809 Comm: kworker/10:2 Not tainted
6.8.6-201.ChopperV6.fc39.x86_64 #1
Hardware name: SLIMBOOK Executive/Executive, BIOS N.1.10GRU06 02/02/2024
Workqueue: pm pm_runtime_work
Call Trace:
<TASK>
dump_stack_lvl+0x64/0x80
warn_alloc+0x165/0x1e0
? __alloc_pages_direct_compact+0xb3/0x2b0
__alloc_pages_slowpath.constprop.0+0xd7d/0xde0
__alloc_pages+0x32d/0x350
__dma_direct_alloc_pages.isra.0+0x16a/0x2b0
dma_direct_alloc+0x70/0x270
nvkm_gsp_radix3_sg+0x5e/0x130 [nouveau]
r535_gsp_fini+0x1d4/0x350 [nouveau]
nvkm_subdev_fini+0x67/0x150 [nouveau]
nvkm_device_fini+0x95/0x1e0 [nouveau]
nvkm_udevice_fini+0x53/0x70 [nouveau]
nvkm_object_fini+0xb9/0x240 [nouveau]
nvkm_object_fini+0x75/0x240 [nouveau]
nouveau_do_suspend+0xf5/0x280 [nouveau]
nouveau_pmops_runtime_suspend+0x3e/0xb0 [nouveau]
pci_pm_runtime_suspend+0x67/0x1e0
? __pfx_pci_pm_runtime_suspend+0x10/0x10
__rpm_callback+0x41/0x170
? __pfx_pci_pm_runtime_suspend+0x10/0x10
rpm_callback+0x5d/0x70
? __pfx_pci_pm_runtime_suspend+0x10/0x10
rpm_suspend+0x120/0x6a0
pm_runtime_work+0x98/0xb0
process_one_work+0x171/0x340
worker_thread+0x27b/0x3a0
? __pfx_worker_thread+0x10/0x10
kthread+0xe5/0x120
? __pfx_kthread+0x10/0x10
ret_from_fork+0x31/0x50
? __pfx_kthread+0x10/0x10
ret_from_fork_asm+0x1b/0x30
Luckily, we don't actually need to allocate coherent memory for the page
table thanks to being able to pass the GPU a radix3 page table for
suspend/resume data. So, let's rewrite nvkm_gsp_radix3_sg() to use the sg
allocator for level 2. We continue using coherent allocations for lvl0 and
1, since they only take a single page.
V2:
* Don't forget to actually jump to the next scatterlist when we reach the
end of the scatterlist we're currently on when writing out the page table
for level 2
Signed-off-by: Lyude Paul <[email protected]>
Cc: [email protected]
Reviewed-by: Ben Skeggs <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
show more ...
|