43b7d7cfb1
[PATCH] CPCI: update I have finally done some work to update the CompactPCI hotplug driver to fix some of the outstanding issues in 2.6: - Added adapter and latch status ops so that those files will get created by the current PCI hotplug core. This used to not be required, but seems to be now after some of the sysfs rework in the core. - Replaced slot list spinlock with a r/w semaphore to avoid any potential issues with sleeping. This quiets all of the runtime warnings. - Reworked interrupt driven hot extraction handling to remove need for a polling operator for ENUM# status. There are a lot of boards that only have an interrupt driven by ENUM#, so this lowers the bar to entry. - Replaced pci_visit_dev usage with better use of the PCI core functions. The new code is functionally equivalent to the previous code, but the use of pci_enable_device on insert needs to be investigated further, as I need to do some more testing to see if it is still necessary. Signed-off-by: Scott Murray <scottm@somanetworks.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
97 lines
3 KiB
C
97 lines
3 KiB
C
/*
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* CompactPCI Hot Plug Core Functions
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*
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* Copyright (C) 2002 SOMA Networks, Inc.
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* Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
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* Copyright (C) 2001 IBM Corp.
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Send feedback to <scottm@somanetworks.com>
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*/
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#ifndef _CPCI_HOTPLUG_H
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#define _CPCI_HOTPLUG_H
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#include <linux/types.h>
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#include <linux/pci.h>
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/* PICMG 2.1 R2.0 HS CSR bits: */
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#define HS_CSR_INS 0x0080
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#define HS_CSR_EXT 0x0040
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#define HS_CSR_PI 0x0030
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#define HS_CSR_LOO 0x0008
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#define HS_CSR_PIE 0x0004
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#define HS_CSR_EIM 0x0002
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#define HS_CSR_DHA 0x0001
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struct slot {
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u8 number;
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unsigned int devfn;
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struct pci_bus *bus;
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struct pci_dev *dev;
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unsigned int extracting;
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struct hotplug_slot *hotplug_slot;
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struct list_head slot_list;
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};
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struct cpci_hp_controller_ops {
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int (*query_enum) (void);
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int (*enable_irq) (void);
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int (*disable_irq) (void);
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int (*check_irq) (void *dev_id);
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int (*hardware_test) (struct slot* slot, u32 value);
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u8 (*get_power) (struct slot* slot);
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int (*set_power) (struct slot* slot, int value);
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};
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struct cpci_hp_controller {
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unsigned int irq;
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unsigned long irq_flags;
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char *devname;
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void *dev_id;
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char *name;
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struct cpci_hp_controller_ops *ops;
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};
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extern int cpci_hp_register_controller(struct cpci_hp_controller *controller);
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extern int cpci_hp_unregister_controller(struct cpci_hp_controller *controller);
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extern int cpci_hp_register_bus(struct pci_bus *bus, u8 first, u8 last);
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extern int cpci_hp_unregister_bus(struct pci_bus *bus);
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extern int cpci_hp_start(void);
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extern int cpci_hp_stop(void);
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/*
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* Internal function prototypes, these functions should not be used by
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* board/chassis drivers.
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*/
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extern u8 cpci_get_attention_status(struct slot *slot);
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extern u8 cpci_get_latch_status(struct slot *slot);
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extern u8 cpci_get_adapter_status(struct slot *slot);
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extern u16 cpci_get_hs_csr(struct slot * slot);
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extern int cpci_set_attention_status(struct slot *slot, int status);
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extern int cpci_check_and_clear_ins(struct slot * slot);
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extern int cpci_check_ext(struct slot * slot);
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extern int cpci_clear_ext(struct slot * slot);
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extern int cpci_led_on(struct slot * slot);
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extern int cpci_led_off(struct slot * slot);
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extern int cpci_configure_slot(struct slot *slot);
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extern int cpci_unconfigure_slot(struct slot *slot);
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#endif /* _CPCI_HOTPLUG_H */
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