mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-23 04:35:32 +07:00
f0f4711aa1
Change the callers of walk_iomem_res() scanning for the following resources by name to use walk_iomem_res_desc() instead. "ACPI Tables" "ACPI Non-volatile Storage" "Persistent Memory (legacy)" "Crash kernel" Note, the caller of walk_iomem_res() with "GART" will be removed in a later patch. Signed-off-by: Toshi Kani <toshi.kani@hpe.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Dave Young <dyoung@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Chun-Yi <joeyli.kernel@gmail.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Don Zickus <dzickus@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Lee, Chun-Yi <joeyli.kernel@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Luis R. Rodriguez <mcgrof@suse.com> Cc: Minfei Huang <mnfhuang@gmail.com> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Takao Indoh <indou.takao@jp.fujitsu.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Toshi Kani <toshi.kani@hp.com> Cc: kexec@lists.infradead.org Cc: linux-arch@vger.kernel.org Cc: linux-mm <linux-mm@kvack.org> Cc: linux-nvdimm@lists.01.org Link: http://lkml.kernel.org/r/1453841853-11383-15-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
101 lines
2.3 KiB
C
101 lines
2.3 KiB
C
/*
|
|
* Copyright (c) 2015, Christoph Hellwig.
|
|
* Copyright (c) 2015, Intel Corporation.
|
|
*/
|
|
#include <linux/platform_device.h>
|
|
#include <linux/memory_hotplug.h>
|
|
#include <linux/libnvdimm.h>
|
|
#include <linux/module.h>
|
|
|
|
static const struct attribute_group *e820_pmem_attribute_groups[] = {
|
|
&nvdimm_bus_attribute_group,
|
|
NULL,
|
|
};
|
|
|
|
static const struct attribute_group *e820_pmem_region_attribute_groups[] = {
|
|
&nd_region_attribute_group,
|
|
&nd_device_attribute_group,
|
|
NULL,
|
|
};
|
|
|
|
static int e820_pmem_remove(struct platform_device *pdev)
|
|
{
|
|
struct nvdimm_bus *nvdimm_bus = platform_get_drvdata(pdev);
|
|
|
|
nvdimm_bus_unregister(nvdimm_bus);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_MEMORY_HOTPLUG
|
|
static int e820_range_to_nid(resource_size_t addr)
|
|
{
|
|
return memory_add_physaddr_to_nid(addr);
|
|
}
|
|
#else
|
|
static int e820_range_to_nid(resource_size_t addr)
|
|
{
|
|
return NUMA_NO_NODE;
|
|
}
|
|
#endif
|
|
|
|
static int e820_pmem_probe(struct platform_device *pdev)
|
|
{
|
|
static struct nvdimm_bus_descriptor nd_desc;
|
|
struct device *dev = &pdev->dev;
|
|
struct nvdimm_bus *nvdimm_bus;
|
|
struct resource *p;
|
|
|
|
nd_desc.attr_groups = e820_pmem_attribute_groups;
|
|
nd_desc.provider_name = "e820";
|
|
nvdimm_bus = nvdimm_bus_register(dev, &nd_desc);
|
|
if (!nvdimm_bus)
|
|
goto err;
|
|
platform_set_drvdata(pdev, nvdimm_bus);
|
|
|
|
for (p = iomem_resource.child; p ; p = p->sibling) {
|
|
struct nd_region_desc ndr_desc;
|
|
|
|
if (p->desc != IORES_DESC_PERSISTENT_MEMORY_LEGACY)
|
|
continue;
|
|
|
|
memset(&ndr_desc, 0, sizeof(ndr_desc));
|
|
ndr_desc.res = p;
|
|
ndr_desc.attr_groups = e820_pmem_region_attribute_groups;
|
|
ndr_desc.numa_node = e820_range_to_nid(p->start);
|
|
set_bit(ND_REGION_PAGEMAP, &ndr_desc.flags);
|
|
if (!nvdimm_pmem_region_create(nvdimm_bus, &ndr_desc))
|
|
goto err;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err:
|
|
nvdimm_bus_unregister(nvdimm_bus);
|
|
dev_err(dev, "failed to register legacy persistent memory ranges\n");
|
|
return -ENXIO;
|
|
}
|
|
|
|
static struct platform_driver e820_pmem_driver = {
|
|
.probe = e820_pmem_probe,
|
|
.remove = e820_pmem_remove,
|
|
.driver = {
|
|
.name = "e820_pmem",
|
|
},
|
|
};
|
|
|
|
static __init int e820_pmem_init(void)
|
|
{
|
|
return platform_driver_register(&e820_pmem_driver);
|
|
}
|
|
|
|
static __exit void e820_pmem_exit(void)
|
|
{
|
|
platform_driver_unregister(&e820_pmem_driver);
|
|
}
|
|
|
|
MODULE_ALIAS("platform:e820_pmem*");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_AUTHOR("Intel Corporation");
|
|
module_init(e820_pmem_init);
|
|
module_exit(e820_pmem_exit);
|