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Frodo Looijaard
f18d210815
It compiles now for 2.0 kernels; I hope it still compiles for 2.1 kernels :-) Changes: * The non-BIOS PCI interface was introduced in kernel 2.1.54, so I changed all #ifdef statements to use that kernel as starting point * I integrated everything in piix4.h into piix4.c; as no other module will ever need to know about anything PIIX4-specific, we do not need a separate header file (same went for lm78.c and lm75.c) * In piix4_setup, both the 2.0 and 2.1 versions continue seeking for PCI devices until they have found 'function 3' of the PIIX4. This is the 'function' we need for SMBus access. * At some places in piix4_setup, even for 2.1 kernels the PCI BIOS code was used. This was seemingly needed, probably because the wrong 'function' was accessed. I have removed this; if there are troubles with the PIIX4 on kernels newer than 2.1.53, we need to introduce it again. * Renamed global things to start uniformly with piix4_ * Changed printk statements to start with piix4.o: * Pasted in missing part of piix4_access * No need to lock the adapter on access; this is already done by the smbus_access function in smbus.c. I corrected a locking bug there too, by the way. * Added a few include files needed by 2.0 at least * Replaced the call to schedule_timeout() in piix4_do_pause with the old code; schedule_timeout seems to be defined nowhere?!? Phil, was this your addition, and if so, what should it read? git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@34 7894878c-1315-0410-8ee3-d5d059ff63e0
80 lines
3.1 KiB
C
80 lines
3.1 KiB
C
/*
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compar.h - A Linux module for reading sensor data.
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Copyright (c) 1998 Frodo Looijaard <frodol@dds.nl>
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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
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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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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#ifndef SENSORS_COMPAT_H
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#define SENSORS_COMPAT_H
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/* This useful macro is not defined in the 2.0 kernels */
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#include <linux/version.h>
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#ifndef KERNEL_VERSION
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#define KERNEL_VERSION(a,b,c) (((a) << 16) | ((b) << 8) | (c))
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#endif
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#ifdef MODULE
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#include <linux/module.h>
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#ifndef MODULE_AUTHOR
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#define MODULE_AUTHOR(whatever)
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#endif
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#ifndef MODULE_DESCRIPTION
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#define MODULE_DESCRIPTION(whatever)
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#endif
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#endif /* def MODULE */
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/* copy_from/to_usr is called memcpy_from/to_fs in 2.0 kernels
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get_user was redefined in 2.1 kernels to use two arguments, and returns
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an error code */
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,1,4))
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#define copy_from_user memcpy_fromfs
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#define copy_to_user memcpy_tofs
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#define get_user_data(to,from) ((to) = get_user(from),0)
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#else
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#include <asm/uaccess.h>
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#define get_user_data(to,from) get_user(to,from)
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#endif
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/* If the new PCI interface is not present, fall back on the old PCI BIOS
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interface. We also define some things to unite both interfaces. Not
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very nice, but it works like a charm.
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device is the 2.1 struct pci_dev, bus is the 2.0 bus number, dev is the
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2.0 device/function code, com is the PCI command, and res is the result. */
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,1,54))
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#define pci_present pcibios_present
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#define pci_read_config_byte_united(device,bus,dev,com,res) \
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pcibios_read_config_byte(bus,dev,com,res);
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#define pci_read_config_word_united(device,bus,dev,com,res) \
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pcibios_read_config_word(bus,dev,com,res);
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#define pci_write_config_byte_united(device,bus,dev,com,res) \
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pcibios_write_config_byte(bus,dev,com,res);
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#define pci_write_config_word_united(device,bus,dev,com,res) \
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pcibios_write_config_word(bus,dev,com,res);
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#else
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#define pci_read_config_byte_united(device,bus,dev,com,res) \
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pci_read_config_byte(device,com,res);
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#define pci_read_config_word_united(device,bus,dev,com,res) \
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pci_read_config_word(device,com,res);
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#define pci_write_config_byte_united(device,bus,dev,com,res) \
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pci_write_config_byte(device,com,res);
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#define pci_write_config_word_united(device,bus,dev,com,res) \
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pci_write_config_byte(device,com,res);
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#endif
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#endif /* SENSORS_COMPAT_H */
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