tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * c 2001 PPC 64 Team, IBM Corp
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 */
9#ifndef _ASM_POWERPC_PPC_PCI_H
10#define _ASM_POWERPC_PPC_PCI_H
11#ifdef __KERNEL__
12
13#include <linux/pci.h>
14#include <asm/pci-bridge.h>
15
16extern unsigned long isa_io_base;
17
18extern void pci_setup_phb_io(struct pci_controller *hose, int primary);
19extern void pci_setup_phb_io_dynamic(struct pci_controller *hose, int primary);
20
21
22extern struct list_head hose_list;
23extern int global_phb_number;
24
25extern unsigned long find_and_init_phbs(void);
26
27extern struct pci_dev *ppc64_isabridge_dev; /* may be NULL if no ISA bus */
28
29/** Bus Unit ID macros; get low and hi 32-bits of the 64-bit BUID */
30#define BUID_HI(buid) ((buid) >> 32)
31#define BUID_LO(buid) ((buid) & 0xffffffff)
32
33/* PCI device_node operations */
34struct device_node;
35typedef void *(*traverse_func)(struct device_node *me, void *data);
36void *traverse_pci_devices(struct device_node *start, traverse_func pre,
37 void *data);
38
39extern void pci_devs_phb_init(void);
40extern void pci_devs_phb_init_dynamic(struct pci_controller *phb);
41extern void scan_phb(struct pci_controller *hose);
42
43/* From rtas_pci.h */
44extern void init_pci_config_tokens (void);
45extern unsigned long get_phb_buid (struct device_node *);
46extern int rtas_setup_phb(struct pci_controller *phb);
47
48/* From pSeries_pci.h */
49extern void pSeries_final_fixup(void);
50
51extern unsigned long pci_probe_only;
52
53/* ---- EEH internal-use-only related routines ---- */
54#ifdef CONFIG_EEH
55
56void pci_addr_cache_insert_device(struct pci_dev *dev);
57void pci_addr_cache_remove_device(struct pci_dev *dev);
58void pci_addr_cache_build(void);
59struct pci_dev *pci_get_device_by_addr(unsigned long addr);
60
61/**
62 * eeh_slot_error_detail -- record and EEH error condition to the log
63 * @severity: 1 if temporary, 2 if permanent failure.
64 *
65 * Obtains the the EEH error details from the RTAS subsystem,
66 * and then logs these details with the RTAS error log system.
67 */
68void eeh_slot_error_detail (struct pci_dn *pdn, int severity);
69
70/**
71 * rtas_pci_enableo - enable IO transfers for this slot
72 * @pdn: pci device node
73 * @function: either EEH_THAW_MMIO or EEH_THAW_DMA
74 *
75 * Enable I/O transfers to this slot
76 */
77#define EEH_THAW_MMIO 2
78#define EEH_THAW_DMA 3
79int rtas_pci_enable(struct pci_dn *pdn, int function);
80
81/**
82 * rtas_set_slot_reset -- unfreeze a frozen slot
83 *
84 * Clear the EEH-frozen condition on a slot. This routine
85 * does this by asserting the PCI #RST line for 1/8th of
86 * a second; this routine will sleep while the adapter is
87 * being reset.
88 *
89 * Returns a non-zero value if the reset failed.
90 */
91int rtas_set_slot_reset (struct pci_dn *);
92
93/**
94 * eeh_restore_bars - Restore device configuration info.
95 *
96 * A reset of a PCI device will clear out its config space.
97 * This routines will restore the config space for this
98 * device, and is children, to values previously obtained
99 * from the firmware.
100 */
101void eeh_restore_bars(struct pci_dn *);
102
103/**
104 * rtas_configure_bridge -- firmware initialization of pci bridge
105 *
106 * Ask the firmware to configure all PCI bridges devices
107 * located behind the indicated node. Required after a
108 * pci device reset. Does essentially the same hing as
109 * eeh_restore_bars, but for brdges, and lets firmware
110 * do the work.
111 */
112void rtas_configure_bridge(struct pci_dn *);
113
114int rtas_write_config(struct pci_dn *, int where, int size, u32 val);
115int rtas_read_config(struct pci_dn *, int where, int size, u32 *val);
116
117/**
118 * mark and clear slots: find "partition endpoint" PE and set or
119 * clear the flags for each subnode of the PE.
120 */
121void eeh_mark_slot (struct device_node *dn, int mode_flag);
122void eeh_clear_slot (struct device_node *dn, int mode_flag);
123
124/* Find the associated "Partiationable Endpoint" PE */
125struct device_node * find_device_pe(struct device_node *dn);
126
127#endif
128
129#endif /* __KERNEL__ */
130#endif /* _ASM_POWERPC_PPC_PCI_H */