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riscv: enable generic PCI resource mapping

Message ID 20210412111012.675957-1-kda@semihalf.com (mailing list archive)
State New, archived
Headers show
Series riscv: enable generic PCI resource mapping | expand

Commit Message

Stanislaw Kardach April 12, 2021, 11:10 a.m. UTC 
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>
---
 arch/riscv/include/asm/pci.h | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/arch/riscv/include/asm/pci.h b/arch/riscv/include/asm/pci.h
index 658e112c3ce7..7fd52a30e605 100644
--- a/arch/riscv/include/asm/pci.h
+++ b/arch/riscv/include/asm/pci.h
@@ -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