pci: Add helpers for BAR values and memory/IO space access

We're going to be checking the BAR type, the address written to it and if
access to memory or I/O space is enabled quite often when we add

pci: Add helpers for BAR values and memory/IO space access

We're going to be checking the BAR type, the address written to it and if
access to memory or I/O space is enabled quite often when we add support
for reasignable BARs; make our life easier by adding helpers for it.

Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Link: https://lore.kernel.org/r/1589470709-4104-3-git-send-email-alexandru.elisei@arm.com
Signed-off-by: Will Deacon <will@kernel.org>

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Implement spapr pci for little endian systems.

Port the spapr_pci implementation for ppc64le.
Based on suggestions by Alexey Kardashevskiy <aik@ozlabs.ru>
We should have always used phys_hi and 64 b

Implement spapr pci for little endian systems.

Port the spapr_pci implementation for ppc64le.
Based on suggestions by Alexey Kardashevskiy <aik@ozlabs.ru>
We should have always used phys_hi and 64 bit addr and size.

Cc: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Balbir Singh <bsingharora@gmail.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Will Deacon <will.deacon@arm.com>

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kvm tools: powerpc: make use of common of_pci.h header definitions

Now that we have some common OF PCI definitions in of_pci.h, make use
of them when generating the devicetree for spapr_pci on ppc.

kvm tools: powerpc: make use of common of_pci.h header definitions

Now that we have some common OF PCI definitions in of_pci.h, make use
of them when generating the devicetree for spapr_pci on ppc.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools: powerpc: convert spapr pci to new device iterators

Commit 8d35d32d0148 ("kvm tools: add generic device registration
mechanism") introduced a tree-based device lookup-by-bus mechanism as
w

kvm tools: powerpc: convert spapr pci to new device iterators

Commit 8d35d32d0148 ("kvm tools: add generic device registration
mechanism") introduced a tree-based device lookup-by-bus mechanism as
well as iterators to enumerate the devices on a particular bus.

Whilst both x86 and ppc were converted by the original patch, the spapr
pci changes were incomplete, so include the required changes here.

Compile-tested only on ppc64 970mp. Note that I had to hack the Makefile
in order to build guest_init.o with a toolchain defaulting to ppc:

$(GUEST_INIT): guest/init.c
$(E) " LINK " $@
- $(Q) $(CC) -static guest/init.c -o $@
- $(Q) $(LD) -r -b binary -o guest/guest_init.o $(GUEST_INIT)
+ $(Q) $(CC) -m64 -static guest/init.c -o $@
+ $(Q) $(LD) -m elf64ppc -r -b binary -o guest/guest_init.o $(GUEST_INIT)

$(DEPS):

Acked-by: Matt Evans <matt@ozlabs.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools: add generic device registration mechanism

PCI devices are currently registered into the pci_devices array via the
pci__register function, which can then be indexed later by architecture
c

kvm tools: add generic device registration mechanism

PCI devices are currently registered into the pci_devices array via the
pci__register function, which can then be indexed later by architecture
code to construct device tree nodes. For MMIO devices, there is no such
utility.

Rather than invent a similar mechanism for MMIO, this patch creates a
global device registration mechanism, which allows the device type to be
specified when registered or indexing a device. Current users of the pci
registration code are migrated to the new infrastructure and virtio MMIO
devices are registered at init time.

As part of the device registration, allocation of the device number is
moved out of irq__register_device and performed when adding the device
header to the relevant bus tree, allowing us to maintain separate device
numberspaces for each bus.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools: make _FDT macro usable by other architectures

The _FDT macro is useful when generating device trees for a guest, so
make it available to other architectures.

Signed-off-by: Will Deacon <

kvm tools: make _FDT macro usable by other architectures

The _FDT macro is useful when generating device trees for a guest, so
make it available to other architectures.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools: split struct kvm into arch specific part

Move all the non-arch specific members into a generic struct, and the arch specific
members into a arch specific kvm_arch. This prevents code dupl

kvm tools: split struct kvm into arch specific part

Move all the non-arch specific members into a generic struct, and the arch specific
members into a arch specific kvm_arch. This prevents code duplication across different
archs.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools: Add PPC64 PCI Host Bridge

This provides the PCI bridge, definitions for the address layout of the windows
and wires in IRQs. Once PCI devices are all registered, they are enumerated and

kvm tools: Add PPC64 PCI Host Bridge

This provides the PCI bridge, definitions for the address layout of the windows
and wires in IRQs. Once PCI devices are all registered, they are enumerated and
DT nodes generated for each.

Signed-off-by: Matt Evans <matt@ozlabs.org>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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