mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-30 21:46:31 +00:00
92eb4602eb
The dynamic add path for PCI Host Bridges can fail to configure children adapters under P5IOC controllers. It fails to properly fixup bus/device resources, and it fails to properly enable EEH. Both of these steps need to occur before any children devices are enabled in pci_bus_add_devices(). Signed-off-by: John Rose <johnrose@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
121 lines
3.8 KiB
C
121 lines
3.8 KiB
C
/*
|
|
* c 2001 PPC 64 Team, IBM Corp
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
#ifndef _ASM_POWERPC_PPC_PCI_H
|
|
#define _ASM_POWERPC_PPC_PCI_H
|
|
#ifdef __KERNEL__
|
|
|
|
#include <linux/pci.h>
|
|
#include <asm/pci-bridge.h>
|
|
|
|
extern unsigned long isa_io_base;
|
|
|
|
extern void pci_setup_phb_io(struct pci_controller *hose, int primary);
|
|
extern void pci_setup_phb_io_dynamic(struct pci_controller *hose, int primary);
|
|
|
|
|
|
extern struct list_head hose_list;
|
|
extern int global_phb_number;
|
|
|
|
extern unsigned long find_and_init_phbs(void);
|
|
|
|
extern struct pci_dev *ppc64_isabridge_dev; /* may be NULL if no ISA bus */
|
|
|
|
/** Bus Unit ID macros; get low and hi 32-bits of the 64-bit BUID */
|
|
#define BUID_HI(buid) ((buid) >> 32)
|
|
#define BUID_LO(buid) ((buid) & 0xffffffff)
|
|
|
|
/* PCI device_node operations */
|
|
struct device_node;
|
|
typedef void *(*traverse_func)(struct device_node *me, void *data);
|
|
void *traverse_pci_devices(struct device_node *start, traverse_func pre,
|
|
void *data);
|
|
|
|
void pci_devs_phb_init(void);
|
|
void pci_devs_phb_init_dynamic(struct pci_controller *phb);
|
|
int setup_phb(struct device_node *dev, struct pci_controller *phb);
|
|
void __devinit scan_phb(struct pci_controller *hose);
|
|
|
|
/* From rtas_pci.h */
|
|
void init_pci_config_tokens (void);
|
|
unsigned long get_phb_buid (struct device_node *);
|
|
|
|
/* From pSeries_pci.h */
|
|
extern void pSeries_final_fixup(void);
|
|
extern void pSeries_irq_bus_setup(struct pci_bus *bus);
|
|
|
|
extern unsigned long pci_probe_only;
|
|
|
|
/* ---- EEH internal-use-only related routines ---- */
|
|
#ifdef CONFIG_EEH
|
|
|
|
void pci_addr_cache_insert_device(struct pci_dev *dev);
|
|
void pci_addr_cache_remove_device(struct pci_dev *dev);
|
|
void pci_addr_cache_build(void);
|
|
struct pci_dev *pci_get_device_by_addr(unsigned long addr);
|
|
|
|
/**
|
|
* eeh_slot_error_detail -- record and EEH error condition to the log
|
|
* @severity: 1 if temporary, 2 if permanent failure.
|
|
*
|
|
* Obtains the the EEH error details from the RTAS subsystem,
|
|
* and then logs these details with the RTAS error log system.
|
|
*/
|
|
void eeh_slot_error_detail (struct pci_dn *pdn, int severity);
|
|
|
|
/**
|
|
* rtas_set_slot_reset -- unfreeze a frozen slot
|
|
*
|
|
* Clear the EEH-frozen condition on a slot. This routine
|
|
* does this by asserting the PCI #RST line for 1/8th of
|
|
* a second; this routine will sleep while the adapter is
|
|
* being reset.
|
|
*
|
|
* Returns a non-zero value if the reset failed.
|
|
*/
|
|
int rtas_set_slot_reset (struct pci_dn *);
|
|
|
|
/**
|
|
* eeh_restore_bars - Restore device configuration info.
|
|
*
|
|
* A reset of a PCI device will clear out its config space.
|
|
* This routines will restore the config space for this
|
|
* device, and is children, to values previously obtained
|
|
* from the firmware.
|
|
*/
|
|
void eeh_restore_bars(struct pci_dn *);
|
|
|
|
/**
|
|
* rtas_configure_bridge -- firmware initialization of pci bridge
|
|
*
|
|
* Ask the firmware to configure all PCI bridges devices
|
|
* located behind the indicated node. Required after a
|
|
* pci device reset. Does essentially the same hing as
|
|
* eeh_restore_bars, but for brdges, and lets firmware
|
|
* do the work.
|
|
*/
|
|
void rtas_configure_bridge(struct pci_dn *);
|
|
|
|
int rtas_write_config(struct pci_dn *, int where, int size, u32 val);
|
|
int rtas_read_config(struct pci_dn *, int where, int size, u32 *val);
|
|
|
|
/**
|
|
* mark and clear slots: find "partition endpoint" PE and set or
|
|
* clear the flags for each subnode of the PE.
|
|
*/
|
|
void eeh_mark_slot (struct device_node *dn, int mode_flag);
|
|
void eeh_clear_slot (struct device_node *dn, int mode_flag);
|
|
|
|
/* Find the associated "Partiationable Endpoint" PE */
|
|
struct device_node * find_device_pe(struct device_node *dn);
|
|
|
|
#endif
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* _ASM_POWERPC_PPC_PCI_H */
|