LXR linux/include/asm-powerpc/ppc-pci.h

   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#ifdef CONFIG_PCI
  14
  15#include <linux/pci.h>
  16#include <asm/pci-bridge.h>
  17
  18extern unsigned long isa_io_base;
  19
  20extern void pci_setup_phb_io(struct pci_controller *hose, int primary);
  21extern void pci_setup_phb_io_dynamic(struct pci_controller *hose, int primary);
  22
  23
  24extern struct list_head hose_list;
  25extern int global_phb_number;
  26
  27extern void find_and_init_phbs(void);
  28
  29extern struct pci_dev *isa_bridge_pcidev;       /* may be NULL if no ISA bus */
  30
  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)
  34
  35/* PCI device_node operations */
  36struct device_node;
  37typedef void *(*traverse_func)(struct device_node *me, void *data);
  38void *traverse_pci_devices(struct device_node *start, traverse_func pre,
  39                void *data);
  40
  41extern void pci_devs_phb_init(void);
  42extern void pci_devs_phb_init_dynamic(struct pci_controller *phb);
  43extern void scan_phb(struct pci_controller *hose);
  44
  45/* From rtas_pci.h */
  46extern void init_pci_config_tokens (void);
  47extern unsigned long get_phb_buid (struct device_node *);
  48extern int rtas_setup_phb(struct pci_controller *phb);
  49
  50/* From iSeries PCI */
  51extern void iSeries_pcibios_init(void);
  52
  53extern unsigned long pci_probe_only;
  54
  55/* ---- EEH internal-use-only related routines ---- */
  56#ifdef CONFIG_EEH
  57
  58void pci_addr_cache_insert_device(struct pci_dev *dev);
  59void pci_addr_cache_remove_device(struct pci_dev *dev);
  60void pci_addr_cache_build(void);
  61struct pci_dev *pci_get_device_by_addr(unsigned long addr);
  62
  63/**
  64 * eeh_slot_error_detail -- record and EEH error condition to the log
  65 * @pdn:      pci device node
  66 * @severity: EEH_LOG_TEMP_FAILURE or EEH_LOG_PERM_FAILURE
  67 *
  68 * Obtains the EEH error details from the RTAS subsystem,
  69 * and then logs these details with the RTAS error log system.
  70 */
  71#define EEH_LOG_TEMP_FAILURE 1
  72#define EEH_LOG_PERM_FAILURE 2
  73void eeh_slot_error_detail (struct pci_dn *pdn, int severity);
  74
  75/**
  76 * rtas_pci_enable - enable IO transfers for this slot
  77 * @pdn:       pci device node
  78 * @function:  either EEH_THAW_MMIO or EEH_THAW_DMA 
  79 *
  80 * Enable I/O transfers to this slot 
  81 */
  82#define EEH_THAW_MMIO 2
  83#define EEH_THAW_DMA  3
  84int rtas_pci_enable(struct pci_dn *pdn, int function);
  85
  86/**
  87 * rtas_set_slot_reset -- unfreeze a frozen slot
  88 * @pdn:       pci device node
  89 *
  90 * Clear the EEH-frozen condition on a slot.  This routine
  91 * does this by asserting the PCI #RST line for 1/8th of
  92 * a second; this routine will sleep while the adapter is
  93 * being reset.
  94 *
  95 * Returns a non-zero value if the reset failed.
  96 */
  97int rtas_set_slot_reset (struct pci_dn *);
  98int eeh_wait_for_slot_status(struct pci_dn *pdn, int max_wait_msecs);
  99
 100/** 
 101 * eeh_restore_bars - Restore device configuration info.
 102 * @pdn:       pci device node
 103 *
 104 * A reset of a PCI device will clear out its config space.
 105 * This routines will restore the config space for this
 106 * device, and is children, to values previously obtained
 107 * from the firmware.
 108 */
 109void eeh_restore_bars(struct pci_dn *);
 110
 111/**
 112 * rtas_configure_bridge -- firmware initialization of pci bridge
 113 * @pdn:       pci device node
 114 *
 115 * Ask the firmware to configure all PCI bridges devices
 116 * located behind the indicated node. Required after a
 117 * pci device reset. Does essentially the same hing as
 118 * eeh_restore_bars, but for brdges, and lets firmware 
 119 * do the work.
 120 */
 121void rtas_configure_bridge(struct pci_dn *);
 122
 123int rtas_write_config(struct pci_dn *, int where, int size, u32 val);
 124int rtas_read_config(struct pci_dn *, int where, int size, u32 *val);
 125
 126/**
 127 * eeh_mark_slot -- set mode flags for pertition endpoint
 128 * @pdn:       pci device node
 129 *
 130 * mark and clear slots: find "partition endpoint" PE and set or 
 131 * clear the flags for each subnode of the PE.
 132 */
 133void eeh_mark_slot (struct device_node *dn, int mode_flag);
 134void eeh_clear_slot (struct device_node *dn, int mode_flag);
 135
 136/**
 137 * find_device_pe -- Find the associated "Partiationable Endpoint" PE
 138 * @pdn:       pci device node
 139 */
 140struct device_node * find_device_pe(struct device_node *dn);
 141
 142void eeh_sysfs_add_device(struct pci_dev *pdev);
 143void eeh_sysfs_remove_device(struct pci_dev *pdev);
 144
 145#endif /* CONFIG_EEH */
 146
 147#else /* CONFIG_PCI */
 148static inline void find_and_init_phbs(void) { }
 149static inline void init_pci_config_tokens(void) { }
 150#endif /* !CONFIG_PCI */
 151
 152#endif /* __KERNEL__ */
 153#endif /* _ASM_POWERPC_PPC_PCI_H */
 154