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c2a96b7f18
Here is the big set of driver core changes for 6.11-rc1.
Lots of stuff in here, with not a huge diffstat, but apis are evolving
which required lots of files to be touched. Highlights of the changes
in here are:
- platform remove callback api final fixups (Uwe took many releases to
get here, finally!)
- Rust bindings for basic firmware apis and initial driver-core
interactions. It's not all that useful for a "write a whole driver
in rust" type of thing, but the firmware bindings do help out the
phy rust drivers, and the driver core bindings give a solid base on
which others can start their work. There is still a long way to go
here before we have a multitude of rust drivers being added, but
it's a great first step.
- driver core const api changes. This reached across all bus types,
and there are some fix-ups for some not-common bus types that
linux-next and 0-day testing shook out. This work is being done to
help make the rust bindings more safe, as well as the C code, moving
toward the end-goal of allowing us to put driver structures into
read-only memory. We aren't there yet, but are getting closer.
- minor devres cleanups and fixes found by code inspection
- arch_topology minor changes
- other minor driver core cleanups
All of these have been in linux-next for a very long time with no
reported problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here is the big set of driver core changes for 6.11-rc1.
Lots of stuff in here, with not a huge diffstat, but apis are evolving
which required lots of files to be touched. Highlights of the changes
in here are:
- platform remove callback api final fixups (Uwe took many releases
to get here, finally!)
- Rust bindings for basic firmware apis and initial driver-core
interactions.
It's not all that useful for a "write a whole driver in rust" type
of thing, but the firmware bindings do help out the phy rust
drivers, and the driver core bindings give a solid base on which
others can start their work.
There is still a long way to go here before we have a multitude of
rust drivers being added, but it's a great first step.
- driver core const api changes.
This reached across all bus types, and there are some fix-ups for
some not-common bus types that linux-next and 0-day testing shook
out.
This work is being done to help make the rust bindings more safe,
as well as the C code, moving toward the end-goal of allowing us to
put driver structures into read-only memory. We aren't there yet,
but are getting closer.
- minor devres cleanups and fixes found by code inspection
- arch_topology minor changes
- other minor driver core cleanups
All of these have been in linux-next for a very long time with no
reported problems"
* tag 'driver-core-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (55 commits)
ARM: sa1100: make match function take a const pointer
sysfs/cpu: Make crash_hotplug attribute world-readable
dio: Have dio_bus_match() callback take a const *
zorro: make match function take a const pointer
driver core: module: make module_[add|remove]_driver take a const *
driver core: make driver_find_device() take a const *
driver core: make driver_[create|remove]_file take a const *
firmware_loader: fix soundness issue in `request_internal`
firmware_loader: annotate doctests as `no_run`
devres: Correct code style for functions that return a pointer type
devres: Initialize an uninitialized struct member
devres: Fix memory leakage caused by driver API devm_free_percpu()
devres: Fix devm_krealloc() wasting memory
driver core: platform: Switch to use kmemdup_array()
driver core: have match() callback in struct bus_type take a const *
MAINTAINERS: add Rust device abstractions to DRIVER CORE
device: rust: improve safety comments
MAINTAINERS: add Danilo as FIRMWARE LOADER maintainer
MAINTAINERS: add Rust FW abstractions to FIRMWARE LOADER
firmware: rust: improve safety comments
...
74 lines
1.9 KiB
C
74 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2015, Christoph Hellwig.
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* Copyright (c) 2015, Intel Corporation.
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*/
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#include <linux/platform_device.h>
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#include <linux/memory_hotplug.h>
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#include <linux/libnvdimm.h>
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#include <linux/module.h>
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#include <linux/numa.h>
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static void e820_pmem_remove(struct platform_device *pdev)
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{
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struct nvdimm_bus *nvdimm_bus = platform_get_drvdata(pdev);
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nvdimm_bus_unregister(nvdimm_bus);
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}
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static int e820_register_one(struct resource *res, void *data)
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{
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struct nd_region_desc ndr_desc;
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struct nvdimm_bus *nvdimm_bus = data;
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int nid = phys_to_target_node(res->start);
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memset(&ndr_desc, 0, sizeof(ndr_desc));
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ndr_desc.res = res;
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ndr_desc.numa_node = numa_map_to_online_node(nid);
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ndr_desc.target_node = nid;
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set_bit(ND_REGION_PAGEMAP, &ndr_desc.flags);
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if (!nvdimm_pmem_region_create(nvdimm_bus, &ndr_desc))
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return -ENXIO;
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return 0;
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}
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static int e820_pmem_probe(struct platform_device *pdev)
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{
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static struct nvdimm_bus_descriptor nd_desc;
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struct device *dev = &pdev->dev;
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struct nvdimm_bus *nvdimm_bus;
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int rc = -ENXIO;
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nd_desc.provider_name = "e820";
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nd_desc.module = THIS_MODULE;
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nvdimm_bus = nvdimm_bus_register(dev, &nd_desc);
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if (!nvdimm_bus)
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goto err;
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platform_set_drvdata(pdev, nvdimm_bus);
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rc = walk_iomem_res_desc(IORES_DESC_PERSISTENT_MEMORY_LEGACY,
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IORESOURCE_MEM, 0, -1, nvdimm_bus, e820_register_one);
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if (rc)
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goto err;
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return 0;
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err:
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nvdimm_bus_unregister(nvdimm_bus);
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dev_err(dev, "failed to register legacy persistent memory ranges\n");
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return rc;
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}
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static struct platform_driver e820_pmem_driver = {
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.probe = e820_pmem_probe,
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.remove_new = e820_pmem_remove,
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.driver = {
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.name = "e820_pmem",
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},
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};
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module_platform_driver(e820_pmem_driver);
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MODULE_ALIAS("platform:e820_pmem*");
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MODULE_DESCRIPTION("NVDIMM support for e820 type-12 memory");
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MODULE_LICENSE("GPL v2");
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MODULE_AUTHOR("Intel Corporation");
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