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; 25 26extern void find_and_init_phbs(void); 27 28extern 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 */ 35struct device_node; 36typedef void *(*traverse_func)(struct device_node *me, void *data); 37void *traverse_pci_devices(struct device_node *start, traverse_func pre, 38 void *data); 39 40extern void pci_devs_phb_init(void); 41extern void pci_devs_phb_init_dynamic(struct pci_controller *phb); 42 43/* From rtas_pci.h */ 44extern void init_pci_config_tokens (void); 45extern unsigned long get_phb_buid (struct device_node *); 46extern int rtas_setup_phb(struct pci_controller *phb); 47 48extern unsigned long pci_probe_only; 49 50/* ---- EEH internal-use-only related routines ---- */ 51#ifdef CONFIG_EEH 52 53void pci_addr_cache_insert_device(struct pci_dev *dev); 54void pci_addr_cache_remove_device(struct pci_dev *dev); 55void pci_addr_cache_build(void); 56struct pci_dev *pci_get_device_by_addr(unsigned long addr); 57 58/** 59 * eeh_slot_error_detail -- record and EEH error condition to the log 60 * @pdn: pci device node 61 * @severity: EEH_LOG_TEMP_FAILURE or EEH_LOG_PERM_FAILURE 62 * 63 * Obtains the EEH error details from the RTAS subsystem, 64 * and then logs these details with the RTAS error log system. 65 */ 66#define EEH_LOG_TEMP_FAILURE 1 67#define EEH_LOG_PERM_FAILURE 2 68void eeh_slot_error_detail (struct pci_dn *pdn, int severity); 69 70/** 71 * rtas_pci_enable - enable IO transfers for this slot 72 * @pdn: pci device node 73 * @function: either EEH_THAW_MMIO or EEH_THAW_DMA 74 * 75 * Enable I/O transfers to this slot 76 */ 77#define EEH_THAW_MMIO 2 78#define EEH_THAW_DMA 3 79int rtas_pci_enable(struct pci_dn *pdn, int function); 80 81/** 82 * rtas_set_slot_reset -- unfreeze a frozen slot 83 * @pdn: pci device node 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 */ 92int rtas_set_slot_reset (struct pci_dn *); 93int eeh_wait_for_slot_status(struct pci_dn *pdn, int max_wait_msecs); 94 95/** 96 * eeh_restore_bars - Restore device configuration info. 97 * @pdn: pci device node 98 * 99 * A reset of a PCI device will clear out its config space. 100 * This routines will restore the config space for this 101 * device, and is children, to values previously obtained 102 * from the firmware. 103 */ 104void eeh_restore_bars(struct pci_dn *); 105 106/** 107 * rtas_configure_bridge -- firmware initialization of pci bridge 108 * @pdn: pci device node 109 * 110 * Ask the firmware to configure all PCI bridges devices 111 * located behind the indicated node. Required after a 112 * pci device reset. Does essentially the same hing as 113 * eeh_restore_bars, but for brdges, and lets firmware 114 * do the work. 115 */ 116void rtas_configure_bridge(struct pci_dn *); 117 118int rtas_write_config(struct pci_dn *, int where, int size, u32 val); 119int rtas_read_config(struct pci_dn *, int where, int size, u32 *val); 120 121/** 122 * eeh_mark_slot -- set mode flags for pertition endpoint 123 * @pdn: pci device node 124 * 125 * mark and clear slots: find "partition endpoint" PE and set or 126 * clear the flags for each subnode of the PE. 127 */ 128void eeh_mark_slot (struct device_node *dn, int mode_flag); 129void eeh_clear_slot (struct device_node *dn, int mode_flag); 130 131/** 132 * find_device_pe -- Find the associated "Partiationable Endpoint" PE 133 * @pdn: pci device node 134 */ 135struct device_node * find_device_pe(struct device_node *dn); 136 137void eeh_sysfs_add_device(struct pci_dev *pdev); 138void eeh_sysfs_remove_device(struct pci_dev *pdev); 139 140static inline const char *eeh_pci_name(struct pci_dev *pdev) 141{ 142 return pdev ? pci_name(pdev) : "<null>"; 143} 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