7a67832c7e
We currently register a platform device for e820 type-12 memory and register a nvdimm bus beneath it. Registering the platform device triggers the device-core machinery to probe for a driver, but that search currently comes up empty. Building the nvdimm-bus registration into the e820_pmem platform device registration in this way forces libnvdimm to be built-in. Instead, convert the built-in portion of CONFIG_X86_PMEM_LEGACY to simply register a platform device and move the rest of the logic to the driver for e820_pmem, for the following reasons: 1/ Letting e820_pmem support be a module allows building and testing libnvdimm.ko changes without rebooting 2/ All the normal policy around modules can be applied to e820_pmem (unbind to disable and/or blacklisting the module from loading by default) 3/ Moving the driver to a generic location and converting it to scan "iomem_resource" rather than "e820.map" means any other architecture can take advantage of this simple nvdimm resource discovery mechanism by registering a resource named "Persistent Memory (legacy)" Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
47 lines
1.3 KiB
Makefile
47 lines
1.3 KiB
Makefile
ldflags-y += --wrap=ioremap_wt
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ldflags-y += --wrap=ioremap_wc
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ldflags-y += --wrap=devm_ioremap_nocache
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ldflags-y += --wrap=ioremap_cache
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ldflags-y += --wrap=ioremap_nocache
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ldflags-y += --wrap=iounmap
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ldflags-y += --wrap=__request_region
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ldflags-y += --wrap=__release_region
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DRIVERS := ../../../drivers
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NVDIMM_SRC := $(DRIVERS)/nvdimm
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ACPI_SRC := $(DRIVERS)/acpi
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obj-$(CONFIG_LIBNVDIMM) += libnvdimm.o
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obj-$(CONFIG_BLK_DEV_PMEM) += nd_pmem.o
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obj-$(CONFIG_ND_BTT) += nd_btt.o
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obj-$(CONFIG_ND_BLK) += nd_blk.o
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obj-$(CONFIG_X86_PMEM_LEGACY) += nd_e820.o
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obj-$(CONFIG_ACPI_NFIT) += nfit.o
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nfit-y := $(ACPI_SRC)/nfit.o
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nfit-y += config_check.o
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nd_pmem-y := $(NVDIMM_SRC)/pmem.o
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nd_pmem-y += config_check.o
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nd_btt-y := $(NVDIMM_SRC)/btt.o
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nd_btt-y += config_check.o
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nd_blk-y := $(NVDIMM_SRC)/blk.o
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nd_blk-y += config_check.o
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nd_e820-y := $(NVDIMM_SRC)/e820.o
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nd_e820-y += config_check.o
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libnvdimm-y := $(NVDIMM_SRC)/core.o
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libnvdimm-y += $(NVDIMM_SRC)/bus.o
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libnvdimm-y += $(NVDIMM_SRC)/dimm_devs.o
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libnvdimm-y += $(NVDIMM_SRC)/dimm.o
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libnvdimm-y += $(NVDIMM_SRC)/region_devs.o
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libnvdimm-y += $(NVDIMM_SRC)/region.o
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libnvdimm-y += $(NVDIMM_SRC)/namespace_devs.o
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libnvdimm-y += $(NVDIMM_SRC)/label.o
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libnvdimm-$(CONFIG_BTT) += $(NVDIMM_SRC)/btt_devs.o
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libnvdimm-y += config_check.o
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obj-m += test/
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