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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ALPHA_PCI_H
#define __ALPHA_PCI_H
#ifdef __KERNEL__
#include <linux/spinlock.h>
#include <linux/dma-mapping.h>
#include <linux/scatterlist.h>
#include <asm/machvec.h>
/*
* The following structure is used to manage multiple PCI busses.
*/
struct pci_iommu_arena;
struct page;
/* A controller. Used to manage multiple PCI busses. */
struct pci_controller {
struct pci_controller *next;
struct pci_bus *bus;
struct resource *io_space;
struct resource *mem_space;
/* The following are for reporting to userland. The invariant is
that if we report a BWX-capable dense memory, we do not report
a sparse memory at all, even if it exists. */
unsigned long sparse_mem_base;
unsigned long dense_mem_base;
unsigned long sparse_io_base;
unsigned long dense_io_base;
/* This one's for the kernel only. It's in KSEG somewhere. */
unsigned long config_space_base;
unsigned int index;
/* For compatibility with current (as of July 2003) pciutils
and XFree86. Eventually will be removed. */
unsigned int need_domain_info;
struct pci_iommu_arena *sg_pci;
struct pci_iommu_arena *sg_isa;
void *sysdata;
};
/* Override the logic in pci_scan_bus for skipping already-configured
bus numbers. */
#define pcibios_assign_all_busses() 1
#define PCIBIOS_MIN_IO alpha_mv.min_io_address
#define PCIBIOS_MIN_MEM alpha_mv.min_mem_address
/* IOMMU controls. */
/* The PCI address space does not equal the physical memory address space.
The networking and block device layers use this boolean for bounce buffer
decisions. */
#define PCI_DMA_BUS_IS_PHYS 0
/* TODO: integrate with include/asm-generic/pci.h ? */
static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
{
return channel ? 15 : 14;
}
#define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index
static inline int pci_proc_domain(struct pci_bus *bus)
{
struct pci_controller *hose = bus->sysdata;
return hose->need_domain_info;
}
#endif /* __KERNEL__ */
/* Values for the `which' argument to sys_pciconfig_iobase. */
#define IOBASE_HOSE 0
#define IOBASE_SPARSE_MEM 1
#define IOBASE_DENSE_MEM 2
#define IOBASE_SPARSE_IO 3
#define IOBASE_DENSE_IO 4
#define IOBASE_ROOT_BUS 5
#define IOBASE_FROM_HOSE 0x10000
extern struct pci_dev *isa_bridge;
extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val,
size_t count);
extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val,
size_t count);
extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
struct vm_area_struct *vma,
enum pci_mmap_state mmap_state);
extern void pci_adjust_legacy_attr(struct pci_bus *bus,
enum pci_mmap_state mmap_type);
#define HAVE_PCI_LEGACY 1
extern int pci_create_resource_files(struct pci_dev *dev);
extern void pci_remove_resource_files(struct pci_dev *dev);
#endif /* __ALPHA_PCI_H */
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