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;
26 extern void find_and_init_phbs(void);
28 extern struct pci_dev *isa_bridge_pcidev; /* may be NULL if no ISA bus */
30 /** Bus Unit ID macros; get low and hi 32-bits of the 64-bit BUID */
31 #define BUID_HI(buid) ((buid) >> 32)
32 #define BUID_LO(buid) ((buid) & 0xffffffff)
34 /* PCI device_node operations */
36 typedef void *(*traverse_func)(struct device_node *me, void *data);
37 void *traverse_pci_devices(struct device_node *start, traverse_func pre,
40 extern void pci_devs_phb_init(void);
41 extern void pci_devs_phb_init_dynamic(struct pci_controller *phb);
42 extern void scan_phb(struct pci_controller *hose);
45 extern void init_pci_config_tokens (void);
46 extern unsigned long get_phb_buid (struct device_node *);
47 extern int rtas_setup_phb(struct pci_controller *phb);
49 /* From iSeries PCI */
50 extern void iSeries_pcibios_init(void);
52 extern unsigned long pci_probe_only;
54 /* ---- EEH internal-use-only related routines ---- */
57 void pci_addr_cache_insert_device(struct pci_dev *dev);
58 void pci_addr_cache_remove_device(struct pci_dev *dev);
59 void pci_addr_cache_build(void);
60 struct pci_dev *pci_get_device_by_addr(unsigned long addr);
63 * eeh_slot_error_detail -- record and EEH error condition to the log
64 * @pdn: pci device node
65 * @severity: EEH_LOG_TEMP_FAILURE or EEH_LOG_PERM_FAILURE
67 * Obtains the EEH error details from the RTAS subsystem,
68 * and then logs these details with the RTAS error log system.
70 #define EEH_LOG_TEMP_FAILURE 1
71 #define EEH_LOG_PERM_FAILURE 2
72 void eeh_slot_error_detail (struct pci_dn *pdn, int severity);
75 * rtas_pci_enable - enable IO transfers for this slot
76 * @pdn: pci device node
77 * @function: either EEH_THAW_MMIO or EEH_THAW_DMA
79 * Enable I/O transfers to this slot
81 #define EEH_THAW_MMIO 2
82 #define EEH_THAW_DMA 3
83 int rtas_pci_enable(struct pci_dn *pdn, int function);
86 * rtas_set_slot_reset -- unfreeze a frozen slot
87 * @pdn: pci device node
89 * Clear the EEH-frozen condition on a slot. This routine
90 * does this by asserting the PCI #RST line for 1/8th of
91 * a second; this routine will sleep while the adapter is
94 * Returns a non-zero value if the reset failed.
96 int rtas_set_slot_reset (struct pci_dn *);
97 int eeh_wait_for_slot_status(struct pci_dn *pdn, int max_wait_msecs);
100 * eeh_restore_bars - Restore device configuration info.
101 * @pdn: pci device node
103 * A reset of a PCI device will clear out its config space.
104 * This routines will restore the config space for this
105 * device, and is children, to values previously obtained
108 void eeh_restore_bars(struct pci_dn *);
111 * rtas_configure_bridge -- firmware initialization of pci bridge
112 * @pdn: pci device node
114 * Ask the firmware to configure all PCI bridges devices
115 * located behind the indicated node. Required after a
116 * pci device reset. Does essentially the same hing as
117 * eeh_restore_bars, but for brdges, and lets firmware
120 void rtas_configure_bridge(struct pci_dn *);
122 int rtas_write_config(struct pci_dn *, int where, int size, u32 val);
123 int rtas_read_config(struct pci_dn *, int where, int size, u32 *val);
126 * eeh_mark_slot -- set mode flags for pertition endpoint
127 * @pdn: pci device node
129 * mark and clear slots: find "partition endpoint" PE and set or
130 * clear the flags for each subnode of the PE.
132 void eeh_mark_slot (struct device_node *dn, int mode_flag);
133 void eeh_clear_slot (struct device_node *dn, int mode_flag);
136 * find_device_pe -- Find the associated "Partiationable Endpoint" PE
137 * @pdn: pci device node
139 struct device_node * find_device_pe(struct device_node *dn);
141 void eeh_sysfs_add_device(struct pci_dev *pdev);
142 void eeh_sysfs_remove_device(struct pci_dev *pdev);
144 #endif /* CONFIG_EEH */
146 #else /* CONFIG_PCI */
147 static inline void find_and_init_phbs(void) { }
148 static inline void init_pci_config_tokens(void) { }
149 #endif /* !CONFIG_PCI */
151 #endif /* __KERNEL__ */
152 #endif /* _ASM_POWERPC_PPC_PCI_H */