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riscv: enable generic PCI resource mapping

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Enable the PCI resource mapping on RISC-V using the generic framework.
This allows userspace applications to mmap PCI resources using
/sys/devices/pci*/*/resource* interface.
The mmap has been tested with Intel x520-DA2 NIC card on a HiFive
Unmatched board (SiFive FU740 SoC).

Signed-off-by: Stanislaw Kardach <kda@semihalf.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
This commit is contained in:
Stanislaw Kardach 2021-04-12 13:10:12 +02:00 committed by Palmer Dabbelt
parent 8f3e136ff3
commit db75674680
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1 changed files with 2 additions and 0 deletions
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2
arch/riscv/include/asm/pci.h
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@ -18,6 +18,8 @@
/* RISC-V shim does not initialize PCI bus */
#define pcibios_assign_all_busses() 1
#define ARCH_GENERIC_PCI_MMAP_RESOURCE 1
extern int isa_dma_bridge_buggy;
#ifdef CONFIG_PCI