From: Stanislaw Kardach <kda@semihalf.com>
Date: Mon, 12 Apr 2021 11:10:12 +0000 (+0200)
Subject: riscv: enable generic PCI resource mapping
X-Git-Tag: v5.14-rc1~32^2~27
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=db756746807b5cb64bbe2e6ac4ff38d18b7787ed;p=thirdparty%2Flinux.git

riscv: enable generic PCI resource mapping

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>
---

diff --git a/arch/riscv/include/asm/pci.h b/arch/riscv/include/asm/pci.h
index 658e112c3ce73..7fd52a30e6058 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