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
  18 extern unsigned long isa_io_base;
  19
  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);
  22
  23
  24 extern struct list_head hose_list;
  25 extern int global_phb_number;
  26
  27 extern void find_and_init_phbs(void);
  28
  29 extern struct pci_dev *ppc64_isabridge_dev;     /* 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 */
  36 struct device_node;
  37 typedef void *(*traverse_func)(struct device_node *me, void *data);
  38 void *traverse_pci_devices(struct device_node *start, traverse_func pre,
  39                 void *data);
  40
  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);
  44
  45 /* From rtas_pci.h */
  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);
  49
  50 /* From pSeries_pci.h */
  51 extern void pSeries_final_fixup(void);
  52
  53 extern unsigned long pci_probe_only;
  54
  55 /* ---- EEH internal-use-only related routines ---- */
  56 #ifdef CONFIG_EEH
  57
  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);
  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
  73 void 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
  84 int 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  */
  97 int rtas_set_slot_reset (struct pci_dn *);
  98 int 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  */
 109 void 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  */
 121 void rtas_configure_bridge(struct pci_dn *);
 122
 123 int rtas_write_config(struct pci_dn *, int where, int size, u32 val);
 124 int 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  */
 133 void eeh_mark_slot (struct device_node *dn, int mode_flag);
 134 void 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  */
 140 struct device_node * find_device_pe(struct device_node *dn);
 141
 142 #endif /* CONFIG_EEH */
 143
 144 #else /* CONFIG_PCI */
 145 static inline void find_and_init_phbs(void) { }
 146 static inline void init_pci_config_tokens(void) { }
 147 #endif /* !CONFIG_PCI */
 148
 149 #endif /* __KERNEL__ */
 150 #endif /* _ASM_POWERPC_PPC_PCI_H */