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 #include <linux/pci.h>
  14 #include <asm/pci-bridge.h>
  15
  16 extern unsigned long isa_io_base;
  17
  18 extern void pci_setup_phb_io(struct pci_controller *hose, int primary);
  19 extern void pci_setup_phb_io_dynamic(struct pci_controller *hose, int primary);
  20
  21
  22 extern struct list_head hose_list;
  23 extern int global_phb_number;
  24
  25 extern unsigned long find_and_init_phbs(void);
  26
  27 extern 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 */
  34 struct device_node;
  35 typedef void *(*traverse_func)(struct device_node *me, void *data);
  36 void *traverse_pci_devices(struct device_node *start, traverse_func pre,
  37                 void *data);
  38
  39 void pci_devs_phb_init(void);
  40 void pci_devs_phb_init_dynamic(struct pci_controller *phb);
  41 int setup_phb(struct device_node *dev, struct pci_controller *phb);
  42 void __devinit scan_phb(struct pci_controller *hose);
  43
  44 /* From rtas_pci.h */
  45 void init_pci_config_tokens (void);
  46 unsigned long get_phb_buid (struct device_node *);
  47
  48 /* From pSeries_pci.h */
  49 extern void pSeries_final_fixup(void);
  50 extern void pSeries_irq_bus_setup(struct pci_bus *bus);
  51
  52 extern unsigned long pci_probe_only;
  53
  54 /* ---- EEH internal-use-only related routines ---- */
  55 #ifdef CONFIG_EEH
  56
  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);
  61
  62 /**
  63  * eeh_slot_error_detail -- record and EEH error condition to the log
  64  * @severity: 1 if temporary, 2 if permanent failure.
  65  *
  66  * Obtains the the EEH error details from the RTAS subsystem,
  67  * and then logs these details with the RTAS error log system.
  68  */
  69 void eeh_slot_error_detail (struct pci_dn *pdn, int severity);
  70
  71 /**
  72  * rtas_pci_enableo - enable IO transfers for this slot
  73  * @pdn:       pci device node
  74  * @function:  either EEH_THAW_MMIO or EEH_THAW_DMA
  75  *
  76  * Enable I/O transfers to this slot
  77  */
  78 #define EEH_THAW_MMIO 2
  79 #define EEH_THAW_DMA  3
  80 int rtas_pci_enable(struct pci_dn *pdn, int function);
  81
  82 /**
  83  * rtas_set_slot_reset -- unfreeze a frozen slot
  84  *
  85  * Clear the EEH-frozen condition on a slot.  This routine
  86  * does this by asserting the PCI #RST line for 1/8th of
  87  * a second; this routine will sleep while the adapter is
  88  * being reset.
  89  *
  90  * Returns a non-zero value if the reset failed.
  91  */
  92 int rtas_set_slot_reset (struct pci_dn *);
  93
  94 /**
  95  * eeh_restore_bars - Restore device configuration info.
  96  *
  97  * A reset of a PCI device will clear out its config space.
  98  * This routines will restore the config space for this
  99  * device, and is children, to values previously obtained
 100  * from the firmware.
 101  */
 102 void eeh_restore_bars(struct pci_dn *);
 103
 104 /**
 105  * rtas_configure_bridge -- firmware initialization of pci bridge
 106  *
 107  * Ask the firmware to configure all PCI bridges devices
 108  * located behind the indicated node. Required after a
 109  * pci device reset. Does essentially the same hing as
 110  * eeh_restore_bars, but for brdges, and lets firmware
 111  * do the work.
 112  */
 113 void rtas_configure_bridge(struct pci_dn *);
 114
 115 int rtas_write_config(struct pci_dn *, int where, int size, u32 val);
 116 int rtas_read_config(struct pci_dn *, int where, int size, u32 *val);
 117
 118 /**
 119  * mark and clear slots: find "partition endpoint" PE and set or
 120  * clear the flags for each subnode of the PE.
 121  */
 122 void eeh_mark_slot (struct device_node *dn, int mode_flag);
 123 void eeh_clear_slot (struct device_node *dn, int mode_flag);
 124
 125 /* Find the associated "Partiationable Endpoint" PE */
 126 struct device_node * find_device_pe(struct device_node *dn);
 127
 128 #endif
 129
 130 #endif /* __KERNEL__ */
 131 #endif /* _ASM_POWERPC_PPC_PCI_H */