arch/powerpc/include/asm/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
  26 extern void find_and_init_phbs(void);
  27
  28 extern struct pci_dev *isa_bridge_pcidev;       /* may be NULL if no ISA bus */
  29
  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)
  33
  34 /* PCI device_node operations */
  35 struct device_node;
  36 typedef void *(*traverse_func)(struct device_node *me, void *data);
  37 void *traverse_pci_devices(struct device_node *start, traverse_func pre,
  38                 void *data);
  39
  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);
  43
  44 /* From rtas_pci.h */
  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);
  48
  49 extern unsigned long pci_probe_only;
  50
  51 /* ---- EEH internal-use-only related routines ---- */
  52 #ifdef CONFIG_EEH
  53
  54 void pci_addr_cache_insert_device(struct pci_dev *dev);
  55 void pci_addr_cache_remove_device(struct pci_dev *dev);
  56 void pci_addr_cache_build(void);
  57 struct pci_dev *pci_get_device_by_addr(unsigned long addr);
  58
  59 /**
  60  * eeh_slot_error_detail -- record and EEH error condition to the log
  61  * @pdn:      pci device node
  62  * @severity: EEH_LOG_TEMP_FAILURE or EEH_LOG_PERM_FAILURE
  63  *
  64  * Obtains the EEH error details from the RTAS subsystem,
  65  * and then logs these details with the RTAS error log system.
  66  */
  67 #define EEH_LOG_TEMP_FAILURE 1
  68 #define EEH_LOG_PERM_FAILURE 2
  69 void eeh_slot_error_detail (struct pci_dn *pdn, int severity);
  70
  71 /**
  72  * rtas_pci_enable - 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  * @pdn:       pci device node
  85  *
  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
  89  * being reset.
  90  *
  91  * Returns a non-zero value if the reset failed.
  92  */
  93 int rtas_set_slot_reset (struct pci_dn *);
  94 int eeh_wait_for_slot_status(struct pci_dn *pdn, int max_wait_msecs);
  95
  96 /**
  97  * eeh_restore_bars - Restore device configuration info.
  98  * @pdn:       pci device node
  99  *
 100  * A reset of a PCI device will clear out its config space.
 101  * This routines will restore the config space for this
 102  * device, and is children, to values previously obtained
 103  * from the firmware.
 104  */
 105 void eeh_restore_bars(struct pci_dn *);
 106
 107 /**
 108  * rtas_configure_bridge -- firmware initialization of pci bridge
 109  * @pdn:       pci device node
 110  *
 111  * Ask the firmware to configure all PCI bridges devices
 112  * located behind the indicated node. Required after a
 113  * pci device reset. Does essentially the same hing as
 114  * eeh_restore_bars, but for brdges, and lets firmware
 115  * do the work.
 116  */
 117 void rtas_configure_bridge(struct pci_dn *);
 118
 119 int rtas_write_config(struct pci_dn *, int where, int size, u32 val);
 120 int rtas_read_config(struct pci_dn *, int where, int size, u32 *val);
 121
 122 /**
 123  * eeh_mark_slot -- set mode flags for pertition endpoint
 124  * @pdn:       pci device node
 125  *
 126  * mark and clear slots: find "partition endpoint" PE and set or
 127  * clear the flags for each subnode of the PE.
 128  */
 129 void eeh_mark_slot (struct device_node *dn, int mode_flag);
 130 void eeh_clear_slot (struct device_node *dn, int mode_flag);
 131
 132 /**
 133  * find_device_pe -- Find the associated "Partiationable Endpoint" PE
 134  * @pdn:       pci device node
 135  */
 136 struct device_node * find_device_pe(struct device_node *dn);
 137
 138 void eeh_sysfs_add_device(struct pci_dev *pdev);
 139 void eeh_sysfs_remove_device(struct pci_dev *pdev);
 140
 141 #endif /* CONFIG_EEH */
 142
 143 #else /* CONFIG_PCI */
 144 static inline void find_and_init_phbs(void) { }
 145 static inline void init_pci_config_tokens(void) { }
 146 #endif /* !CONFIG_PCI */
 147
 148 #endif /* __KERNEL__ */
 149 #endif /* _ASM_POWERPC_PPC_PCI_H */