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Diffstat (limited to 'arch/riscv/include/asm/pci.h')
| -rw-r--r-- | arch/riscv/include/asm/pci.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/pci.h b/arch/riscv/include/asm/pci.h new file mode 100644 index 000000000000..0f2fc9ef20fc --- /dev/null +++ b/arch/riscv/include/asm/pci.h @@ -0,0 +1,48 @@ +/* + * Copyright (C) 2016 SiFive + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, version 2. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __ASM_RISCV_PCI_H +#define __ASM_RISCV_PCI_H + +#include <linux/types.h> +#include <linux/slab.h> +#include <linux/dma-mapping.h> + +#include <asm/io.h> + +#define PCIBIOS_MIN_IO 0 +#define PCIBIOS_MIN_MEM 0 + +/* RISC-V shim does not initialize PCI bus */ +#define pcibios_assign_all_busses() 1 + +/* We do not have an IOMMU */ +#define PCI_DMA_BUS_IS_PHYS 1 + +extern int isa_dma_bridge_buggy; + +#ifdef CONFIG_PCI +static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel) +{ + /* no legacy IRQ on risc-v */ + return -ENODEV; +} + +static inline int pci_proc_domain(struct pci_bus *bus) +{ + /* always show the domain in /proc */ + return 1; +} +#endif /* CONFIG_PCI */ + +#endif /* __ASM_PCI_H */ |