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1,426,945 commits

Author SHA1 Message Date
John Hubbard
ba6e088ac6 gpu: nova-core: print FB sizes, along with ranges
For convenience of the reader: now you can directly see the sizes of
each range. It is surprising just how much this helps.

Sample output (using an Ampere GA104):

NovaCore 0000:e1:00.0: FbLayout {
    fb: 0x0..0x3ff800000 (16376 MiB),
    vga_workspace: 0x3ff700000..0x3ff800000 (1 MiB),
    frts: 0x3ff600000..0x3ff700000 (1 MiB),
    boot: 0x3ff5fa000..0x3ff600000 (24 KiB),
    elf: 0x3fb960000..0x3ff5f9000 (60 MiB),
    wpr2_heap: 0x3f3900000..0x3fb900000 (128 MiB),
    wpr2: 0x3f3800000..0x3ff700000 (191 MiB),
    heap: 0x3f3700000..0x3f3800000 (1 MiB),
    vf_partition_count: 0x0,
}

Cc: Timur Tabi <ttabi@nvidia.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Link: https://patch.msgid.link/20260310021125.117855-2-jhubbard@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-03-10 20:13:39 +09:00
Eliot Courtney
0499a3826c gpu: nova-core: gsp: add tests for continuation records
Add tests for continuation record splitting. They cover boundary
conditions at the split points to make sure the right number of
continuation records are made. They also check that the data
concatenated is correct.

Tested-by: Zhi Wang <zhiw@nvidia.com>
Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260306-cmdq-continuation-v6-9-cc7b629200ee@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-03-10 16:07:33 +09:00
Eliot Courtney
e8f4f9ae86 gpu: nova-core: gsp: support large RPCs via continuation record
Splits large RPCs if necessary and sends the remaining parts using
continuation records. RPCs that do not need continuation records
continue to write directly into the command buffer. Ones that do write
into a staging buffer first, so there is one copy.

Continuation record for receive is not necessary to support at the
moment because those replies do not need to be read and are currently
drained by retrying `receive_msg` on `ERANGE`.

Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260306-cmdq-continuation-v6-8-cc7b629200ee@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-03-10 16:07:33 +09:00
Eliot Courtney
adcb40c5fc gpu: nova-core: gsp: add size helper to CommandToGsp
Add a default method to `CommandToGsp` which computes the size of a
command.

Tested-by: Zhi Wang <zhiw@nvidia.com>
Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260306-cmdq-continuation-v6-7-cc7b629200ee@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-03-10 16:07:33 +09:00
Eliot Courtney
dcf1fdafe0 gpu: nova-core: gsp: unconditionally call variable payload handling
Unconditionally call the variable length payload code, which is a no-op
if there is no such payload but could defensively catch some coding
errors by e.g. checking that the allocated size is completely filled.

Tested-by: Zhi Wang <zhiw@nvidia.com>
Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260306-cmdq-continuation-v6-6-cc7b629200ee@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-03-10 16:07:33 +09:00
Eliot Courtney
1a0d4bc62b gpu: nova-core: gsp: clarify invariant on command queue
Clarify why using only the first returned slice from allocate_command
for the message headers is okay.

Tested-by: Zhi Wang <zhiw@nvidia.com>
Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260306-cmdq-continuation-v6-5-cc7b629200ee@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-03-10 16:07:33 +09:00
Eliot Courtney
41584c7134 gpu: nova-core: gsp: add checking oversized commands
The limit is 16 pages for a single command sent to the GSP. Return an
error if `allocate_command` is called with a too large size.

Tested-by: Zhi Wang <zhiw@nvidia.com>
Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260306-cmdq-continuation-v6-4-cc7b629200ee@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-03-10 16:07:33 +09:00
Eliot Courtney
59f237a0d1 rust: add EMSGSIZE error code
Add the EMSGSIZE error code, which indicates that a message is too
long.

Tested-by: Zhi Wang <zhiw@nvidia.com>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260306-cmdq-continuation-v6-3-cc7b629200ee@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-03-10 16:07:33 +09:00
Eliot Courtney
b4281ffb80 gpu: nova-core: gsp: add mechanism to wait for space on command queue
Add a timeout to `allocate_command` which waits for space on the GSP
command queue. It uses a similar timeout to nouveau.

This lets `send_command` wait for space to free up in the command queue.
This is required to support continuation records which can fill up the
queue.

Tested-by: Zhi Wang <zhiw@nvidia.com>
Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260306-cmdq-continuation-v6-2-cc7b629200ee@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-03-10 16:07:33 +09:00
Eliot Courtney
9a3e455927 gpu: nova-core: gsp: sort MsgFunction variants alphabetically
There is no particular order required here and keeping them alphabetical
will help preventing future mistakes.

Tested-by: Zhi Wang <zhiw@nvidia.com>
Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260306-cmdq-continuation-v6-1-cc7b629200ee@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-03-10 16:07:32 +09:00
Deborah Brouwer
dd8a93dafe drm/tyr: Use DRM device type alias across driver
Currently Tyr defines a convenience type alias for its DRM device type,
`TyrDrmDevice` but it does not use the alias outside of `tyr/driver.rs`.

Replace `drm::Device<TyrDrmDriver>` with the alias `TyrDrmDevice` across
the driver.

This change will ease future upstream Tyr development by reducing the
diffs when multiple series are touching these files.

No functional changes are intended.

Signed-off-by: Deborah Brouwer <deborah.brouwer@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20260302202331.176140-1-deborah.brouwer@collabora.com
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
2026-03-09 09:14:39 +00:00
Alexandre Courbot
17d7c97f73 gpu: nova-core: firmware: fix and explain v2 header offsets computations
There are no offsets in `FalconUCodeDescV2` to give the non-secure and
secure IMEM sections start offsets relative to the beginning of the
firmware object.

The start offsets for both sections were set to `0`, but that is
obviously incorrect since two different sections cannot start at the
same offset. Since these offsets were not used by the bootloader, this
doesn't prevent proper function but is incorrect nonetheless.

Fix this by computing the start of the secure IMEM section relatively to
the start of the firmware object and setting it properly. Also add and
improve comments to explain how the values are obtained.

Fixes: dbfb5aa41f ("gpu: nova-core: add FalconUCodeDescV2 support")
Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260306-turing_prep-v11-9-8f0042c5d026@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-03-09 14:29:21 +09:00
Alexandre Courbot
6ef5141114 gpu: nova-core: firmware: add comments to justify v3 header values
There is no member in `FalconUCodeDescV3` to describe the start offsets
of the IMEM and DMEM section in the firmware object. Add comments to
justify how they are computed.

Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260306-turing_prep-v11-8-8f0042c5d026@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-03-09 14:15:13 +09:00
Timur Tabi
50b3e0c7c8 gpu: nova-core: use the Generic Bootloader to boot FWSEC on Turing
On Turing and GA100, a new firmware image called the Generic Bootloader
(gen_bootloader) must be used to load FWSEC into Falcon memory.  The
driver loads the generic bootloader into Falcon IMEM, passes a
descriptor that points to FWSEC using DMEM, and then boots the generic
bootloader.  The bootloader will then load FWSEC into IMEM and boot it.

Signed-off-by: Timur Tabi <ttabi@nvidia.com>
Co-developed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260306-turing_prep-v11-12-8f0042c5d026@nvidia.com
2026-03-09 10:39:13 +09:00
Alexandre Courbot
e92241683a gpu: nova-core: add gen_bootloader firmware to ModInfoBuilder
Turing GPUs need an additional firmware file (the FWSEC generic
bootloader) in order to initialize. Add it to `ModInfoBuilder`.

Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260306-turing_prep-v11-11-8f0042c5d026@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-03-09 10:39:10 +09:00
Alexandre Courbot
349b6dbca0 gpu: nova-core: make Chipset::arch() const
We will use this method from const context.

Also take `self` by value since it is the size of a primitive type and
implements `Copy`.

Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260306-turing_prep-v11-10-8f0042c5d026@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-03-09 10:39:10 +09:00
Alexandre Courbot
192125e090 gpu: nova-core: falcon: remove unwarranted safety check in dma_load
This safety check was an assumption based on the firmwares we work with
- it is not based on an actual hardware limitation. Thus, remove it.

Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260306-turing_prep-v11-7-8f0042c5d026@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-03-09 10:39:10 +09:00
Timur Tabi
c1d2f7471b gpu: nova-core: add PIO support for loading firmware images
Turing and GA100 use programmed I/O (PIO) instead of DMA to upload
firmware images into Falcon memory.

Signed-off-by: Timur Tabi <ttabi@nvidia.com>
Co-developed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260306-turing_prep-v11-6-8f0042c5d026@nvidia.com
2026-03-09 10:39:07 +09:00
Alexandre Courbot
9725005e2b gpu: nova-core: move brom_params and boot_addr to FalconFirmware
These methods are relevant no matter the loading method used, thus move
them to the common `FalconFirmware` trait.

Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260306-turing_prep-v11-5-8f0042c5d026@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-03-09 10:35:40 +09:00
Alexandre Courbot
99d451cb8e gpu: nova-core: falcon: remove FalconFirmware's dependency on FalconDmaLoadable
Not all firmware is necessarily loaded by DMA. Remove the requirement
for `FalconFirmware` to implement `FalconDmaLoadable`, and adapt
`Falcon`'s methods constraints accordingly.

Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260306-turing_prep-v11-4-8f0042c5d026@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-03-09 10:35:40 +09:00
Alexandre Courbot
8a623869b8 gpu: nova-core: falcon: rename load parameters to reflect DMA dependency
The current `FalconLoadParams` and `FalconLoadTarget` types are fit for
DMA loading, but not so much for PIO loading which will require its own
types. Start by renaming them to something that indicates that they are
indeed DMA-related.

Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260306-turing_prep-v11-3-8f0042c5d026@nvidia.com
[acourbot@nvidia.com: fixup order of import items.]
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-03-09 10:35:40 +09:00
Alexandre Courbot
3b97ec9fde gpu: nova-core: falcon: add constant for memory block alignment
Falcon memory blocks are 256 bytes in size. This is a hard constant on
all models.

This value was hardcoded, so turn it into a documented constant. It will
also become useful with the PIO loading code.

Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260306-turing_prep-v11-2-8f0042c5d026@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-03-09 10:35:37 +09:00
Alexandre Courbot
bc9de9e1af gpu: nova-core: create falcon firmware DMA objects lazily
When DMA was the only loading option for falcon firmwares, we decided to
store them in DMA objects as soon as they were loaded from disk and
patch them in-place to avoid having to do an extra copy.

This decision complicates the PIO loading patch considerably, and
actually does not even stand on its own when put into perspective with
the fact that it requires 8 unsafe statements in the code that wouldn't
exist if we stored the firmware into a `KVVec` and copied it into a DMA
object at the last minute.

The cost of the copy is, as can be expected, imperceptible at runtime.
Thus, switch to a lazy DMA object creation model and simplify our code
a bit. This will also have the nice side-effect of being more fit for
PIO loading.

Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260306-turing_prep-v11-1-8f0042c5d026@nvidia.com
[acourbot@nvidia.com: add TODO item to switch back to a coherent
allocation when it becomes convenient to do so.]
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-03-09 10:35:37 +09:00
Deborah Brouwer
15da5bc9f3 drm/tyr: Clarify driver/device type names
Currently the `TyrDriver` struct implements both `platform::Driver` and
`drm::Driver`. For clarity, split up these two roles:
 - Introduce `TyrPlatformDriverData` to implement `platform::Driver`, and
 - Introduce `TyrDrmDriver` to implement `drm::Driver`.

Also rename other variables to reflect their roles in the DRM context:
- Rename `TyrDevice` to `TyrDrmDevice`
- Rename `TyrData` to `TyrDrmDeviceData`
- Rename `File` to `TyrDrmFileData`
- Rename `DrmFile` to `TyrDrmFile`

No functional changes are intended.

Co-developed-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Deborah Brouwer <deborah.brouwer@collabora.com>
Link: https://patch.msgid.link/20260224002314.344675-1-deborah.brouwer@collabora.com
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
2026-03-02 16:35:19 +00:00
Joel Fernandes
6ca4bcc23a gpu: nova-core: Kconfig: Sort select statements alphabetically
Reorder the select statements in NOVA_CORE Kconfig to be in
alphabetical order.

Suggested-by: Danilo Krummrich <dakr@kernel.org>
Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Link: https://patch.msgid.link/20260224225323.3312204-3-joelagnelf@nvidia.com
[acourbot@nvidia.com: fix conflict due to patch reordering.]
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-03-01 21:34:59 +09:00
Alexandre Courbot
4a49fe23e3 gpu: nova-core: use core library's CStr instead of kernel one
The kernel's own CStr type has been replaced by the one in the core
library, and is now an alias to the latter. Change our imports to
directly reference the actual type.

Reviewed-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260217-nova-misc-v3-7-b4e2d45eafbc@nvidia.com
[acourbot@nvidia.com: remove unneeded imports reorganization in
firmware/gsp.rs]
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-02-25 08:17:04 +09:00
Alexandre Courbot
8e10d462e6 gpu: nova-core: gsp: derive Zeroable for GspStaticConfigInfo
We can now derive `Zeroable` on tuple structs, so do this instead of
providing our own implementation.

Reviewed-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260217-nova-misc-v3-6-b4e2d45eafbc@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-02-25 08:17:04 +09:00
Alexandre Courbot
f86226d3c6 gpu: nova-core: gsp: derive Debug on more sequencer types
Being able to print these is useful when debugging the sequencer.

Reviewed-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260217-nova-misc-v3-5-b4e2d45eafbc@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-02-25 08:17:03 +09:00
Alexandre Courbot
953278c19d gpu: nova-core: gsp: remove unneeded sequencer trait
The `GspSeqCmdRunner` trait is never used as we never call the `run`
methods from generic code. Remove it.

Reviewed-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260217-nova-misc-v3-4-b4e2d45eafbc@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-02-25 08:17:03 +09:00
Alexandre Courbot
4503e61a62 gpu: nova-core: gsp: simplify sequencer opcode parsing
The opcodes are already the right type in the C union, so we can use
them directly instead of converting them to a byte stream and back again
using `FromBytes`.

Reviewed-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260217-nova-misc-v3-3-b4e2d45eafbc@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-02-25 08:17:03 +09:00
Alexandre Courbot
3614290d75 gpu: nova-core: gsp: remove unnecessary Display impls
We only ever display these in debug context, for which the automatically
derived `Debug` impls work just fine - so use them and remove these
boilerplate-looking implementations.

Reviewed-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Alistair Popple <apopple@nvidia.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260217-nova-misc-v3-2-b4e2d45eafbc@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-02-25 08:17:03 +09:00
Alexandre Courbot
b45b9f2668 gpu: nova-core: gsp: warn if data remains after processing a message
Not processing the whole data from a received message is a strong
indicator of a bug - emit a warning when such cases are detected.

Reviewed-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260217-nova-misc-v3-1-b4e2d45eafbc@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-02-25 08:17:03 +09:00
Eliot Courtney
5cdbed3ad7 gpu: nova-core: gsp: fix improper indexing in driver_read_area
The current code indexes into `after_rx` using `tx` which is an index
for the whole buffer, not the split buffer `after_rx`.

Also add more rigorous no-panic proofs.

Fixes: 75f6b1de81 ("gpu: nova-core: gsp: Add GSP command queue bindings and handling")
Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260129-nova-core-cmdq1-v3-5-2ede85493a27@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-02-25 08:16:55 +09:00
Eliot Courtney
f64caf673c gpu: nova-core: gsp: fix improper handling of empty slot in cmdq
The current code hands out buffers that go all the way up to and
including `rx - 1`, but we need to maintain an empty slot to prevent the
ring buffer from wrapping around into having 'tx == rx', which means
empty.

Also add more rigorous no-panic proofs.

Fixes: 75f6b1de81 ("gpu: nova-core: gsp: Add GSP command queue bindings and handling")
Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260129-nova-core-cmdq1-v3-4-2ede85493a27@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-02-25 08:16:55 +09:00
Eliot Courtney
f6f072d8ef gpu: nova-core: gsp: use empty slices instead of [0..0] ranges
The current code unnecessarily uses, for example, &before_rx[0..0] to
return an empty slice. Instead, just use an empty slice.

Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260129-nova-core-cmdq1-v3-3-2ede85493a27@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-02-25 08:16:55 +09:00
Eliot Courtney
bbe6831c02 gpu: nova-core: gsp: clarify comments about invariants and pointer roles
Disambiguate a few things in comments in cmdq.rs.

Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260129-nova-core-cmdq1-v3-2-2ede85493a27@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-02-25 08:16:55 +09:00
Eliot Courtney
9045ae2afc gpu: nova-core: gsp: fix incorrect advancing of write pointer
We should modulo not bitwise-and here. The current code could, for
example, set wptr to MSGQ_NUM_PAGES which is not valid.

Fixes: 75f6b1de81 ("gpu: nova-core: gsp: Add GSP command queue bindings and handling")
Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260129-nova-core-cmdq1-v3-1-2ede85493a27@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-02-25 08:16:55 +09:00
Joel Fernandes
4bef417ea4 gpu: nova-core: use checked arithmetic in RISC-V firmware parsing
Use checked_add() when computing offsets from firmware-provided values
in the RISC-V firmware parsing code. These values come from the BinHdr
structure parsed from the firmware file header.

Reviewed-by: Zhi Wang <zhiw@nvidia.com>
Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260126202305.2526618-6-joelagnelf@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-02-25 08:16:55 +09:00
Joel Fernandes
35ae4e58a7 gpu: nova-core: use checked arithmetic in BinFirmware::data
Use checked_add() when computing the firmware data end offset in the
BinFirmware::data() method. The data_offset and data_size fields come
from the BinHdr structure parsed from the firmware file header.

Reviewed-by: Zhi Wang <zhiw@nvidia.com>
Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260126202305.2526618-5-joelagnelf@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-02-25 08:16:55 +09:00
Joel Fernandes
457c70b7dd gpu: nova-core: use checked arithmetic in frombytes_at helper
Use checked_add() when computing the end offset in the frombytes_at()
helper function. This function is called with firmware-provided offsets.

Reviewed-by: Zhi Wang <zhiw@nvidia.com>
Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260126202305.2526618-4-joelagnelf@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-02-25 08:16:55 +09:00
Joel Fernandes
4f26096854 gpu: nova-core: use checked arithmetic in Booter signature parsing
Use checked_add() when computing signature offsets from firmware-
provided values in signatures_iter().

Without checked arithmetic, overflow could wrap to a small plausible
offset that points to entirely wrong data.

Reviewed-by: Zhi Wang <zhiw@nvidia.com>
Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260126202305.2526618-3-joelagnelf@nvidia.com
[acourbot@nvidia.com: remove obvious computation comments.]
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-02-25 08:16:55 +09:00
Joel Fernandes
0568b376a0 gpu: nova-core: use checked arithmetic in FWSEC firmware parsing
Use checked_add() and checked_mul() when computing offsets from

firmware-provided values in new_fwsec().
Without checked arithmetic, corrupt firmware could cause integer
overflow. The danger is not just wrapping to a huge value, but
potentially wrapping to a small plausible offset that passes validation
yet accesses entirely wrong data, causing silent corruption or security
issues.

Reviewed-by: Zhi Wang <zhiw@nvidia.com>
Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260126202305.2526618-2-joelagnelf@nvidia.com
[acourbot@nvidia.com: rewrap commit message to make checkpatch happy.]
[acourbot@nvidia.com: add missing empty lines after new code blocks.]
[acourbot@nvidia.com: move SAFETY comments to the unsafe statement they
 describe.]
[acourbot@nvidia.com: remove obvious computation comments and use
`CALC:` for the remaining ones.]
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-02-25 08:16:55 +09:00
Lyude Paul
6ad005ce69 rust/drm: Remove imports covered by prelude::*
This just removes any explicit imports of items in files that are already
being pulled in by `use prelude::*;`.

There should be no functional changes in this patch.

Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patch.msgid.link/20260122214316.3281257-2-lyude@redhat.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2026-02-24 16:11:41 +01:00
Lyude Paul
b7a124928b rust/drm: Fixup import styles
This is to match
  https://docs.kernel.org/rust/coding-guidelines.html#imports

There should be no functional changes in this patch.

Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patch.msgid.link/20260122214316.3281257-1-lyude@redhat.com
[ Move trailing `//` at the end. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2026-02-24 16:10:09 +01:00
John Hubbard
d3f36fa57a gpu: nova-core: fix aux device registration for multi-GPU systems
The auxiliary device registration was using a hardcoded ID of 0, which
caused probe() to fail on multi-GPU systems with:

   sysfs: cannot create duplicate filename '/bus/auxiliary/devices/NovaCore.nova-drm.0'

Fix this by using an atomic counter to generate unique IDs for each
GPU's aux device registration. The TODO item to eventually use XArray
for recycling aux device IDs is retained, but for now, this works very
nicely.

This has the side effect of making debugfs[1] work on multi-GPU systems.

[1] https://lore.kernel.org/20260203224757.871729-1-ttabi@nvidia.com

Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Link: https://patch.msgid.link/20260221020952.412352-2-jhubbard@nvidia.com
[ Use LKMM atomics; inline and slightly reword TODO comment. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2026-02-24 15:44:51 +01:00
Gary Guo
8d1a65c2de gpu: nova-core: remove redundant .as_ref() for dev_* print
This is now handled by the macro itself.

Signed-off-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260123175854.176735-7-gary@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2026-02-24 15:13:07 +01:00
Deborah Brouwer
ef2964f11e drm/tyr: Use vertical style for imports
Currently Tyr uses rustfmt style for imports, but the kernel uses a
vertical layout that makes it easier to resolve conflicts and rebase.

Import guidelines are documented here:
	https://docs.kernel.org/rust/coding-guidelines.html#imports

Change all of Tyr's imports to use the vertical layout. This will
ease the introduction of additional Tyr patches upstream.

There should be no functional changes in this patch.

Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Deborah Brouwer <deborah.brouwer@collabora.com>
Link: https://patch.msgid.link/20260223203833.207955-1-deborah.brouwer@collabora.com
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
2026-02-24 07:21:26 +00:00
Onur Özkan
289cf6f914 drm/tyr: gpu: fix GpuInfo::log model/version decoding
GpuInfo::log() was decoding GPU_ID like this:

  major = (self.gpu_id >> 16) & 0xff;
  minor = (self.gpu_id >> 8) & 0xff;
  status = self.gpu_id & 0xff;

That does not match the Mali GPU_ID layout and mixes unrelated
fields. Due to that, model detection becomes `mali-unknown` on
rk3588s which is wrong.

We can already get all the version information with a single
GpuId::from call (less code and cleaner), so this patch uses it.

Also renamed `GpuModels` fields from `major/minor` to
`arch_major/prod_major` to reflect their real meaning.

This change was tested on Orange Pi 5 (rk3588s) board and the
results are as follows:

Before this change:

$ dmesg | grep 'tyr'
[   19.698338] tyr fb000000.gpu: mali-unknown id 0xa867 major 0x67 minor 0x0 status 0x5
[   19.699050] tyr fb000000.gpu: Features: L2:0x7120306 Tiler:0x809 Mem:0x301 MMU:0x2830 AS:0xff
[   19.699817] tyr fb000000.gpu: shader_present=0x0000000000050005 l2_present=0x0000000000000001 tiler_present=0x0000000000000001
[   19.702493] tyr fb000000.gpu: Tyr initialized correctly.

After this change:

$ dmesg | grep 'tyr'
[   19.591692] tyr fb000000.gpu: mali-g610 id 0xa867 major 0x0 minor 0x0 status 0x5
[   19.592374] tyr fb000000.gpu: Features: L2:0x7120306 Tiler:0x809 Mem:0x301 MMU:0x2830 AS:0xff
[   19.593141] tyr fb000000.gpu: shader_present=0x0000000000050005 l2_present=0x0000000000000001 tiler_present=0x0000000000000001
[   19.595831] tyr fb000000.gpu: Tyr initialized correctly.

Signed-off-by: Onur Özkan <work@onurozkan.dev>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Tested-by: Alvin Sun <sk.alvin.x@gmail.com>
Link: https://patch.msgid.link/20260210183812.261142-1-work@onurozkan.dev
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
2026-02-24 07:21:13 +00:00
Linus Torvalds
6de23f81a5 Linux 7.0-rc1 v7.0-rc1 2026-02-22 13:18:59 -08:00
Linus Torvalds
fbf3380361 fsverity fixes for v7.0-rc1
- Fix a build error on parisc
 
 - Remove the non-large-folio-aware function fsverity_verify_page()
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Merge tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fsverity/linux

Pull fsverity fixes from Eric Biggers:

 - Fix a build error on parisc

 - Remove the non-large-folio-aware function fsverity_verify_page()

* tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fsverity/linux:
  fsverity: fix build error by adding fsverity_readahead() stub
  fsverity: remove fsverity_verify_page()
  f2fs: make f2fs_verify_cluster() partially large-folio-aware
  f2fs: remove unnecessary ClearPageUptodate in f2fs_verify_cluster()
2026-02-22 13:12:04 -08:00