f90bb153b1
This patch reworks the way IRQs are fixed up on PCI for arch powerpc. It makes pci_read_irq_line() called by default in the PCI code for devices that are probed, and add an optional per-device fixup in ppc_md for platforms that really need to correct what they obtain from pci_read_irq_line(). It also removes ppc_md.irq_bus_setup which was only used by pSeries and should not be needed anymore. I've also removed the pSeries s7a workaround as it can't work with the current interrupt code anyway. I'm trying to get one of these machines working so I can test a proper fix for that problem. I also haven't updated the old-style fixup code from 85xx_cds.c because it's actually buggy :) It assigns pci_dev->irq hard coded numbers which is no good with the new IRQ mapping code. It should at least use irq_create_mapping(NULL, hard_coded_number); and possibly also set_irq_type() to set them as level low. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
131 lines
4.0 KiB
C
131 lines
4.0 KiB
C
/*
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* c 2001 PPC 64 Team, IBM Corp
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _ASM_POWERPC_PPC_PCI_H
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#define _ASM_POWERPC_PPC_PCI_H
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#ifdef __KERNEL__
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#include <linux/pci.h>
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#include <asm/pci-bridge.h>
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extern unsigned long isa_io_base;
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extern void pci_setup_phb_io(struct pci_controller *hose, int primary);
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extern void pci_setup_phb_io_dynamic(struct pci_controller *hose, int primary);
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extern struct list_head hose_list;
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extern int global_phb_number;
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extern unsigned long find_and_init_phbs(void);
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extern struct pci_dev *ppc64_isabridge_dev; /* may be NULL if no ISA bus */
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/** Bus Unit ID macros; get low and hi 32-bits of the 64-bit BUID */
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#define BUID_HI(buid) ((buid) >> 32)
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#define BUID_LO(buid) ((buid) & 0xffffffff)
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/* PCI device_node operations */
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struct device_node;
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typedef void *(*traverse_func)(struct device_node *me, void *data);
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void *traverse_pci_devices(struct device_node *start, traverse_func pre,
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void *data);
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void pci_devs_phb_init(void);
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void pci_devs_phb_init_dynamic(struct pci_controller *phb);
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int setup_phb(struct device_node *dev, struct pci_controller *phb);
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void __devinit scan_phb(struct pci_controller *hose);
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/* From rtas_pci.h */
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void init_pci_config_tokens (void);
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unsigned long get_phb_buid (struct device_node *);
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/* From pSeries_pci.h */
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extern void pSeries_final_fixup(void);
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extern unsigned long pci_probe_only;
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/* ---- EEH internal-use-only related routines ---- */
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#ifdef CONFIG_EEH
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void pci_addr_cache_insert_device(struct pci_dev *dev);
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void pci_addr_cache_remove_device(struct pci_dev *dev);
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void pci_addr_cache_build(void);
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struct pci_dev *pci_get_device_by_addr(unsigned long addr);
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/**
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* eeh_slot_error_detail -- record and EEH error condition to the log
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* @severity: 1 if temporary, 2 if permanent failure.
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*
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* Obtains the the EEH error details from the RTAS subsystem,
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* and then logs these details with the RTAS error log system.
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*/
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void eeh_slot_error_detail (struct pci_dn *pdn, int severity);
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/**
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* rtas_pci_enableo - enable IO transfers for this slot
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* @pdn: pci device node
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* @function: either EEH_THAW_MMIO or EEH_THAW_DMA
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*
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* Enable I/O transfers to this slot
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*/
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#define EEH_THAW_MMIO 2
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#define EEH_THAW_DMA 3
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int rtas_pci_enable(struct pci_dn *pdn, int function);
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/**
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* rtas_set_slot_reset -- unfreeze a frozen slot
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*
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* Clear the EEH-frozen condition on a slot. This routine
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* does this by asserting the PCI #RST line for 1/8th of
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* a second; this routine will sleep while the adapter is
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* being reset.
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*
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* Returns a non-zero value if the reset failed.
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*/
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int rtas_set_slot_reset (struct pci_dn *);
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/**
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* eeh_restore_bars - Restore device configuration info.
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*
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* A reset of a PCI device will clear out its config space.
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* This routines will restore the config space for this
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* device, and is children, to values previously obtained
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* from the firmware.
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*/
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void eeh_restore_bars(struct pci_dn *);
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/**
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* rtas_configure_bridge -- firmware initialization of pci bridge
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*
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* Ask the firmware to configure all PCI bridges devices
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* located behind the indicated node. Required after a
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* pci device reset. Does essentially the same hing as
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* eeh_restore_bars, but for brdges, and lets firmware
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* do the work.
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*/
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void rtas_configure_bridge(struct pci_dn *);
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int rtas_write_config(struct pci_dn *, int where, int size, u32 val);
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int rtas_read_config(struct pci_dn *, int where, int size, u32 *val);
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/**
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* mark and clear slots: find "partition endpoint" PE and set or
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* clear the flags for each subnode of the PE.
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*/
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void eeh_mark_slot (struct device_node *dn, int mode_flag);
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void eeh_clear_slot (struct device_node *dn, int mode_flag);
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/* Find the associated "Partiationable Endpoint" PE */
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struct device_node * find_device_pe(struct device_node *dn);
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#endif
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#endif /* __KERNEL__ */
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#endif /* _ASM_POWERPC_PPC_PCI_H */
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