2 * c 2001 PPC 64 Team, IBM Corp
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.
9 #ifndef _ASM_POWERPC_PPC_PCI_H
10 #define _ASM_POWERPC_PPC_PCI_H
15 #include <linux/pci.h>
16 #include <asm/pci-bridge.h>
18 extern unsigned long isa_io_base
;
20 extern void pci_setup_phb_io(struct pci_controller
*hose
, int primary
);
21 extern void pci_setup_phb_io_dynamic(struct pci_controller
*hose
, int primary
);
24 extern struct list_head hose_list
;
25 extern int global_phb_number
;
27 extern void find_and_init_phbs(void);
29 extern struct pci_dev
*ppc64_isabridge_dev
; /* may be NULL if no ISA bus */
31 /** Bus Unit ID macros; get low and hi 32-bits of the 64-bit BUID */
32 #define BUID_HI(buid) ((buid) >> 32)
33 #define BUID_LO(buid) ((buid) & 0xffffffff)
35 /* PCI device_node operations */
37 typedef void *(*traverse_func
)(struct device_node
*me
, void *data
);
38 void *traverse_pci_devices(struct device_node
*start
, traverse_func pre
,
41 extern void pci_devs_phb_init(void);
42 extern void pci_devs_phb_init_dynamic(struct pci_controller
*phb
);
43 extern void scan_phb(struct pci_controller
*hose
);
46 extern void init_pci_config_tokens (void);
47 extern unsigned long get_phb_buid (struct device_node
*);
48 extern int rtas_setup_phb(struct pci_controller
*phb
);
50 /* From pSeries_pci.h */
51 extern void pSeries_final_fixup(void);
53 extern unsigned long pci_probe_only
;
55 /* ---- EEH internal-use-only related routines ---- */
58 void pci_addr_cache_insert_device(struct pci_dev
*dev
);
59 void pci_addr_cache_remove_device(struct pci_dev
*dev
);
60 void pci_addr_cache_build(void);
61 struct pci_dev
*pci_get_device_by_addr(unsigned long addr
);
64 * eeh_slot_error_detail -- record and EEH error condition to the log
65 * @severity: 1 if temporary, 2 if permanent failure.
67 * Obtains the EEH error details from the RTAS subsystem,
68 * and then logs these details with the RTAS error log system.
70 void eeh_slot_error_detail (struct pci_dn
*pdn
, int severity
);
73 * rtas_pci_enable - enable IO transfers for this slot
74 * @pdn: pci device node
75 * @function: either EEH_THAW_MMIO or EEH_THAW_DMA
77 * Enable I/O transfers to this slot
79 #define EEH_THAW_MMIO 2
80 #define EEH_THAW_DMA 3
81 int rtas_pci_enable(struct pci_dn
*pdn
, int function
);
84 * rtas_set_slot_reset -- unfreeze a frozen slot
86 * Clear the EEH-frozen condition on a slot. This routine
87 * does this by asserting the PCI #RST line for 1/8th of
88 * a second; this routine will sleep while the adapter is
91 * Returns a non-zero value if the reset failed.
93 int rtas_set_slot_reset (struct pci_dn
*);
94 int eeh_wait_for_slot_status(struct pci_dn
*pdn
, int max_wait_msecs
);
97 * eeh_restore_bars - Restore device configuration info.
99 * A reset of a PCI device will clear out its config space.
100 * This routines will restore the config space for this
101 * device, and is children, to values previously obtained
104 void eeh_restore_bars(struct pci_dn
*);
107 * rtas_configure_bridge -- firmware initialization of pci bridge
109 * Ask the firmware to configure all PCI bridges devices
110 * located behind the indicated node. Required after a
111 * pci device reset. Does essentially the same hing as
112 * eeh_restore_bars, but for brdges, and lets firmware
115 void rtas_configure_bridge(struct pci_dn
*);
117 int rtas_write_config(struct pci_dn
*, int where
, int size
, u32 val
);
118 int rtas_read_config(struct pci_dn
*, int where
, int size
, u32
*val
);
121 * mark and clear slots: find "partition endpoint" PE and set or
122 * clear the flags for each subnode of the PE.
124 void eeh_mark_slot (struct device_node
*dn
, int mode_flag
);
125 void eeh_clear_slot (struct device_node
*dn
, int mode_flag
);
127 /* Find the associated "Partiationable Endpoint" PE */
128 struct device_node
* find_device_pe(struct device_node
*dn
);
132 #else /* CONFIG_PCI */
133 static inline void find_and_init_phbs(void) { }
134 static inline void init_pci_config_tokens(void) { }
135 #endif /* !CONFIG_PCI */
137 #endif /* __KERNEL__ */
138 #endif /* _ASM_POWERPC_PPC_PCI_H */
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