xref: /openbmc/linux/arch/sparc/include/asm/pbm.h (revision b2441318)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  *
4  * pbm.h: PCI bus module pseudo driver software state
5  *        Adopted from sparc64 by V. Roganov and G. Raiko
6  *
7  * Original header:
8  * pbm.h: U2P PCI bus module pseudo driver software state.
9  *
10  * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
11  *
12  * To put things into perspective, consider sparc64 with a few PCI controllers.
13  * Each type would have an own structure, with instances related one to one.
14  * We have only pcic on sparc, but we want to be compatible with sparc64 pbm.h.
15  * All three represent different abstractions.
16  *   pci_bus  - Linux PCI subsystem view of a PCI bus (including bridged buses)
17  *   pbm      - Arch-specific view of a PCI bus (sparc or sparc64)
18  *   pcic     - Chip-specific information for PCIC.
19  */
20 
21 #ifndef __SPARC_PBM_H
22 #define __SPARC_PBM_H
23 
24 #include <linux/pci.h>
25 #include <asm/oplib.h>
26 #include <asm/prom.h>
27 
28 struct linux_pbm_info {
29 	int		prom_node;
30 	char		prom_name[64];
31 	/* struct linux_prom_pci_ranges	pbm_ranges[PROMREG_MAX]; */
32 	/* int		num_pbm_ranges; */
33 
34 	/* Now things for the actual PCI bus probes. */
35 	unsigned int	pci_first_busno;	/* Can it be nonzero? */
36 	struct pci_bus	*pci_bus;		/* Was inline, MJ allocs now */
37 };
38 
39 /* PCI devices which are not bridges have this placed in their pci_dev
40  * sysdata member.  This makes OBP aware PCI device drivers easier to
41  * code.
42  */
43 struct pcidev_cookie {
44 	struct linux_pbm_info		*pbm;
45 	struct device_node		*prom_node;
46 };
47 
48 #endif /* !(__SPARC_PBM_H) */
49