linux-toradex.git/include/linux/soc/apple, branch v6.16-rc6 Linux kernel for Apalis and Colibri modules soc: apple: rtkit: Pass the crashlog to the crashed() callback 2025-02-18T16:59:11+00:00 Asahi Lina lina@asahilina.net 2025-02-02T13:48:47+00:00 bf8b4e49777d944f84cf7d47360fe80dd3f69d96 Client drivers might want a copy of the crashlog to stash into a devcoredump blob. Since device memory management can be very variable, the actual devcoredump implementation is left to client drivers. Pass the raw crashlog buffer to the client callback so it can use it if desired. Signed-off-by: Asahi Lina <lina@asahilina.net> Reviewed-by: Jens Axboe <axboe@kernel.dk> Link: https://lore.kernel.org/r/20250202-rtkit-crashdump-v1-1-9d38615b4e12@asahilina.net Signed-off-by: Sven Peter <sven@svenpeter.dev> 
Client drivers might want a copy of the crashlog to stash into a
devcoredump blob. Since device memory management can be very variable,
the actual devcoredump implementation is left to client drivers. Pass
the raw crashlog buffer to the client callback so it can use it if
desired.

Signed-off-by: Asahi Lina <lina@asahilina.net>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Link: https://lore.kernel.org/r/20250202-rtkit-crashdump-v1-1-9d38615b4e12@asahilina.net
Signed-off-by: Sven Peter <sven@svenpeter.dev>
kernel-wide: fix spelling mistakes like "assocative" -> "associative" 2024-06-29T02:36:28+00:00 Jesse Brandeburg jesse.brandeburg@intel.com 2024-06-12T00:12:22+00:00 b8c7dd15ceb87e5f37ec1ed7b56c279d98f3eb53 There were several instances of the string "assocat" in the kernel, which should have been spelled "associat", with the various endings of -ive, -ed, -ion, and sometimes beginnging with dis-. Add to the spelling dictionary the corrections so that future instances will be caught by checkpatch, and fix the instances found. Originally noticed by accident with a 'git grep socat'. Link: https://lkml.kernel.org/r/20240612001247.356867-1-jesse.brandeburg@intel.com Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> 
There were several instances of the string "assocat" in the kernel, which
should have been spelled "associat", with the various endings of -ive,
-ed, -ion, and sometimes beginnging with dis-.

Add to the spelling dictionary the corrections so that future instances
will be caught by checkpatch, and fix the instances found.

Originally noticed by accident with a 'git grep socat'.

Link: https://lkml.kernel.org/r/20240612001247.356867-1-jesse.brandeburg@intel.com
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
soc: apple: rtkit: Get rid of apple_rtkit_send_message_wait 2023-11-23T10:09:24+00:00 Hector Martin marcan@marcan.st 2022-05-04T16:25:16+00:00 57b79ac9f43dc71fc8b55af51d1c9f469cb7a0de It is fundamentally broken and has no users. Just remove it. Acked-by: Eric Curtin <ecurtin@redhat.com> Acked-by: Neal Gompa <neal@gompa.dev> Acked-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> Signed-off-by: Hector Martin <marcan@marcan.st> 
It is fundamentally broken and has no users. Just remove it.

Acked-by: Eric Curtin <ecurtin@redhat.com>
Acked-by: Neal Gompa <neal@gompa.dev>
Acked-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Signed-off-by: Hector Martin <marcan@marcan.st>
soc: apple: rtkit: Export non-devm init/free functions 2023-01-31T11:40:14+00:00 Asahi Lina lina@asahilina.net 2023-01-21T07:41:35+00:00 b3892860f50920ea46342d32bf51323877365082 While we normally encourage devm usage by drivers, some consumers (and in particular the upcoming Rust abstractions) might want to manually manage memory. Export the raw functions to make this possible. Signed-off-by: Asahi Lina <lina@asahilina.net> Reviewed-by: Sven Peter <sven@svenpeter.dev> Reviewed-by: Eric Curtin <ecurtin@redhat.com> Signed-off-by: Hector Martin <marcan@marcan.st> 
While we normally encourage devm usage by drivers, some consumers (and
in particular the upcoming Rust abstractions) might want to manually
manage memory. Export the raw functions to make this possible.

Signed-off-by: Asahi Lina <lina@asahilina.net>
Reviewed-by: Sven Peter <sven@svenpeter.dev>
Reviewed-by: Eric Curtin <ecurtin@redhat.com>
Signed-off-by: Hector Martin <marcan@marcan.st>
soc: apple: rtkit: Add a private pointer to apple_rtkit_shmem 2023-01-31T11:37:43+00:00 Asahi Lina lina@asahilina.net 2023-01-21T07:42:53+00:00 4435d63f172851b57a6a0943b73a6b8055a9356f This allows downstream consumers to keep track of private data for shmem mappings. In particular, the Rust abstraction will use this to safely drop data associated with a mapping when it is unmapped. Signed-off-by: Asahi Lina <lina@asahilina.net> Reviewed-by: Sven Peter <sven@svenpeter.dev> Reviewed-by: Eric Curtin <ecurtin@redhat.com> Signed-off-by: Hector Martin <marcan@marcan.st> 
This allows downstream consumers to keep track of private data for shmem
mappings. In particular, the Rust abstraction will use this to safely
drop data associated with a mapping when it is unmapped.

Signed-off-by: Asahi Lina <lina@asahilina.net>
Reviewed-by: Sven Peter <sven@svenpeter.dev>
Reviewed-by: Eric Curtin <ecurtin@redhat.com>
Signed-off-by: Hector Martin <marcan@marcan.st>
soc: apple: rtkit: Add apple_rtkit_idle() function 2023-01-31T11:35:47+00:00 Hector Martin marcan@marcan.st 2023-01-23T06:53:54+00:00 40eaa8c0cbba4a27668c7e01373ccd5b38381e2f This is yet another low power mode, used by DCP. Reviewed-by: Eric Curtin <ecurtin@redhat.com> Reviewed-by: Sven Peter <sven@svenpeter.dev> Signed-off-by: Hector Martin <marcan@marcan.st> 
This is yet another low power mode, used by DCP.

Reviewed-by: Eric Curtin <ecurtin@redhat.com>
Reviewed-by: Sven Peter <sven@svenpeter.dev>
Signed-off-by: Hector Martin <marcan@marcan.st>
soc: apple: rtkit: Add apple_rtkit_poll 2022-09-17T17:53:29+00:00 Hector Martin marcan@marcan.st 2022-09-14T08:34:31+00:00 f5a5e83379b537f6252526bb4d285b771f6f0b89 This allows a client to receive messages in atomic context, by polling. Signed-off-by: Hector Martin <marcan@marcan.st> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Reviewed-by: Sven Peter <sven@svenpeter.dev> Reviewed-by: Eric Curtin <ecurtin@redhat.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> 
This allows a client to receive messages in atomic context, by polling.

Signed-off-by: Hector Martin <marcan@marcan.st>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Sven Peter <sven@svenpeter.dev>
Reviewed-by: Eric Curtin <ecurtin@redhat.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
soc: apple: Add SART driver 2022-05-02T15:24:45+00:00 Sven Peter sven@svenpeter.dev 2022-05-01T14:55:08+00:00 b170143ae1113882731666aec9b9105356f1fc17 The NVMe co-processor on the Apple M1 uses a DMA address filter called SART for some DMA transactions. This adds a simple driver used to configure the memory regions from which DMA transactions are allowed. Unlike a real IOMMU, SART does not support any pagetables and can't be implemented inside the IOMMU subsystem using iommu_ops. It also can't be implemented using dma_map_ops since not all DMA transactions of the NVMe controller are filtered by SART. Instead, most buffers have to be registered using the integrated NVMe IOMMU and we can't have two separate dma_map_ops implementations for a single device. Co-developed-by: Hector Martin <marcan@marcan.st> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Hector Martin <marcan@marcan.st> Signed-off-by: Sven Peter <sven@svenpeter.dev> 
The NVMe co-processor on the Apple M1 uses a DMA address filter called
SART for some DMA transactions. This adds a simple driver used to
configure the memory regions from which DMA transactions are allowed.

Unlike a real IOMMU, SART does not support any pagetables and can't be
implemented inside the IOMMU subsystem using iommu_ops.

It also can't be implemented using dma_map_ops since not all DMA
transactions of the NVMe controller are filtered by SART.
Instead, most buffers have to be registered using the integrated NVMe
IOMMU and we can't have two separate dma_map_ops implementations for a
single device.

Co-developed-by: Hector Martin <marcan@marcan.st>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Hector Martin <marcan@marcan.st>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
soc: apple: Add RTKit IPC library 2022-05-01T14:55:06+00:00 Sven Peter sven@svenpeter.dev 2022-05-01T14:55:06+00:00 9bd1d9a0d8bb1a549831fd98fcc3105960f7068b Apple SoCs such as the M1 come with multiple embedded co-processors running proprietary firmware. Communication with those is established over a simple mailbox using the RTKit IPC protocol. This cannot be implemented inside the mailbox subsystem since on top of communication over channels we also need support for starting, hibernating and resetting these co-processors. We also need to handle shared memory allocations differently depending on the co-processor and don't want to split that across multiple drivers. Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Sven Peter <sven@svenpeter.dev> 
Apple SoCs such as the M1 come with multiple embedded co-processors
running proprietary firmware. Communication with those is established
over a simple mailbox using the RTKit IPC protocol.

This cannot be implemented inside the mailbox subsystem since on top
of communication over channels we also need support for starting,
hibernating and resetting these co-processors. We also need to
handle shared memory allocations differently depending on the
co-processor and don't want to split that across multiple drivers.

Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sven Peter <sven@svenpeter.dev>