xref: /kernel/linux/linux-5.10/arch/sparc/include/asm/pbm.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 *
 * pbm.h: PCI bus module pseudo driver software state
 *        Adopted from sparc64 by V. Roganov and G. Raiko
 *
 * Original header:
 * pbm.h: U2P PCI bus module pseudo driver software state.
 *
 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
 *
 * To put things into perspective, consider sparc64 with a few PCI controllers.
 * Each type would have an own structure, with instances related one to one.
 * We have only pcic on sparc, but we want to be compatible with sparc64 pbm.h.
 * All three represent different abstractions.
 *   pci_bus  - Linux PCI subsystem view of a PCI bus (including bridged buses)
 *   pbm      - Arch-specific view of a PCI bus (sparc or sparc64)
 *   pcic     - Chip-specific information for PCIC.
 */

#ifndef __SPARC_PBM_H
#define __SPARC_PBM_H

#include <linux/pci.h>
#include <asm/oplib.h>
#include <asm/prom.h>

struct linux_pbm_info {
	int		prom_node;
	char		prom_name[64];
	/* struct linux_prom_pci_ranges	pbm_ranges[PROMREG_MAX]; */
	/* int		num_pbm_ranges; */

	/* Now things for the actual PCI bus probes. */
	unsigned int	pci_first_busno;	/* Can it be nonzero? */
	struct pci_bus	*pci_bus;		/* Was inline, MJ allocs now */
};

/* PCI devices which are not bridges have this placed in their pci_dev
 * sysdata member.  This makes OBP aware PCI device drivers easier to
 * code.
 */
struct pcidev_cookie {
	struct linux_pbm_info		*pbm;
	struct device_node		*prom_node;
};

#endif /* !(__SPARC_PBM_H) */