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linux_dsm_epyc7002/drivers/misc/cxl/Kconfig

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cxl: Add base builtin support This adds the base cxl support that cannot be built as a module. Specifically it adds the cxl callbacks that are called from the core powerpc mm code which must always exist irrespective of if the cxl module is loaded or not. This is similar to how cell works with CONFIG_SPU_BASE. This adds a cxl_slbia() call (similar to spu_flush_all_slbs()) which checks if the cxl module is loaded and in use, returning immediately if it is not. If it is in use it calls into the cxl SLB invalidation code. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-08 15:55:01 +07:00
#
# IBM Coherent Accelerator (CXL) compatible devices
#
config CXL_BASE
bool
default n
select PPC_COPRO_BASE
cxl: Add driver to Kbuild and Makefiles Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-08 15:55:04 +07:00
cxl: Add CXL_KERNEL_API config option Add CXL_KERNEL_API config option so drivers which depend on this new functionality won't be enabled until this is visible. This is useful for merging the cxlflash driver which comes in via the SCSI tree. The cxlflash driver can depend on CXL_KERNEL_API, hence it won't be enabled in the SCSI tree until this new config option is merged via the powerpc tree. Hence all trees will be bisectable at all times. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-06-16 13:45:44 +07:00
config CXL_KERNEL_API
bool
default n
cxl: Add CONFIG_CXL_EEH symbol CONFIG_CXL_EEH is for CXL's EEH related code. Other drivers can depend on or #ifdef on this symbol to configure PERST behaviour, allowing CXL to participate in the EEH process. Reviewed-by: Cyril Bur <cyrilbur@gmail.com> Signed-off-by: Daniel Axtens <dja@axtens.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-08-14 14:41:27 +07:00
config CXL_EEH
bool
default n
cxl: Add driver to Kbuild and Makefiles Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-08 15:55:04 +07:00
config CXL
tristate "Support for IBM Coherent Accelerators (CXL)"
cxl: Add CONFIG_CXL_EEH symbol CONFIG_CXL_EEH is for CXL's EEH related code. Other drivers can depend on or #ifdef on this symbol to configure PERST behaviour, allowing CXL to participate in the EEH process. Reviewed-by: Cyril Bur <cyrilbur@gmail.com> Signed-off-by: Daniel Axtens <dja@axtens.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-08-14 14:41:27 +07:00
depends on PPC_POWERNV && PCI_MSI && EEH
cxl: Add driver to Kbuild and Makefiles Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-08 15:55:04 +07:00
select CXL_BASE
cxl: Add CXL_KERNEL_API config option Add CXL_KERNEL_API config option so drivers which depend on this new functionality won't be enabled until this is visible. This is useful for merging the cxlflash driver which comes in via the SCSI tree. The cxlflash driver can depend on CXL_KERNEL_API, hence it won't be enabled in the SCSI tree until this new config option is merged via the powerpc tree. Hence all trees will be bisectable at all times. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-06-16 13:45:44 +07:00
select CXL_KERNEL_API
cxl: Add CONFIG_CXL_EEH symbol CONFIG_CXL_EEH is for CXL's EEH related code. Other drivers can depend on or #ifdef on this symbol to configure PERST behaviour, allowing CXL to participate in the EEH process. Reviewed-by: Cyril Bur <cyrilbur@gmail.com> Signed-off-by: Daniel Axtens <dja@axtens.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-08-14 14:41:27 +07:00
select CXL_EEH
cxl: Add driver to Kbuild and Makefiles Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-08 15:55:04 +07:00
default m
help
Select this option to enable driver support for IBM Coherent
Accelerators (CXL). CXL is otherwise known as Coherent Accelerator
Processor Interface (CAPI). CAPI allows accelerators in FPGAs to be
coherently attached to a CPU via an MMU. This driver enables
userspace programs to access these accelerators via /dev/cxl/afuM.N
devices.
CAPI adapters are found in POWER8 based systems.
If unsure, say N.
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