| 1 |
62 |
marcus.erl |
/* -*- mode: c; c-basic-offset: 8 -*- */
|
| 2 |
|
|
|
| 3 |
|
|
/* This is the function prototypes for the old legacy MCA interface
|
| 4 |
|
|
*
|
| 5 |
|
|
* Please move your driver to the new sysfs based one instead */
|
| 6 |
|
|
|
| 7 |
|
|
#ifndef _LINUX_MCA_LEGACY_H
|
| 8 |
|
|
#define _LINUX_MCA_LEGACY_H
|
| 9 |
|
|
|
| 10 |
|
|
#include <linux/mca.h>
|
| 11 |
|
|
|
| 12 |
|
|
#warning "MCA legacy - please move your driver to the new sysfs api"
|
| 13 |
|
|
|
| 14 |
|
|
/* MCA_NOTFOUND is an error condition. The other two indicate
|
| 15 |
|
|
* motherboard POS registers contain the adapter. They might be
|
| 16 |
|
|
* returned by the mca_find_adapter() function, and can be used as
|
| 17 |
|
|
* arguments to mca_read_stored_pos(). I'm not going to allow direct
|
| 18 |
|
|
* access to the motherboard registers until we run across an adapter
|
| 19 |
|
|
* that requires it. We don't know enough about them to know if it's
|
| 20 |
|
|
* safe.
|
| 21 |
|
|
*
|
| 22 |
|
|
* See Documentation/mca.txt or one of the existing drivers for
|
| 23 |
|
|
* more information.
|
| 24 |
|
|
*/
|
| 25 |
|
|
#define MCA_NOTFOUND (-1)
|
| 26 |
|
|
|
| 27 |
|
|
|
| 28 |
|
|
|
| 29 |
|
|
/* Returns the slot of the first enabled adapter matching id. User can
|
| 30 |
|
|
* specify a starting slot beyond zero, to deal with detecting multiple
|
| 31 |
|
|
* devices. Returns MCA_NOTFOUND if id not found. Also checks the
|
| 32 |
|
|
* integrated adapters.
|
| 33 |
|
|
*/
|
| 34 |
|
|
extern int mca_find_adapter(int id, int start);
|
| 35 |
|
|
extern int mca_find_unused_adapter(int id, int start);
|
| 36 |
|
|
|
| 37 |
|
|
extern int mca_is_adapter_used(int slot);
|
| 38 |
|
|
extern int mca_mark_as_used(int slot);
|
| 39 |
|
|
extern void mca_mark_as_unused(int slot);
|
| 40 |
|
|
|
| 41 |
|
|
/* gets a byte out of POS register (stored in memory) */
|
| 42 |
|
|
extern unsigned char mca_read_stored_pos(int slot, int reg);
|
| 43 |
|
|
|
| 44 |
|
|
/* This can be expanded later. Right now, it gives us a way of
|
| 45 |
|
|
* getting meaningful information into the MCA_info structure,
|
| 46 |
|
|
* so we can have a more interesting /proc/mca.
|
| 47 |
|
|
*/
|
| 48 |
|
|
extern void mca_set_adapter_name(int slot, char* name);
|
| 49 |
|
|
|
| 50 |
|
|
/* These routines actually mess with the hardware POS registers. They
|
| 51 |
|
|
* temporarily disable the device (and interrupts), so make sure you know
|
| 52 |
|
|
* what you're doing if you use them. Furthermore, writing to a POS may
|
| 53 |
|
|
* result in two devices trying to share a resource, which in turn can
|
| 54 |
|
|
* result in multiple devices sharing memory spaces, IRQs, or even trashing
|
| 55 |
|
|
* hardware. YOU HAVE BEEN WARNED.
|
| 56 |
|
|
*
|
| 57 |
|
|
* You can only access slots with this. Motherboard registers are off
|
| 58 |
|
|
* limits.
|
| 59 |
|
|
*/
|
| 60 |
|
|
|
| 61 |
|
|
/* read a byte from the specified POS register. */
|
| 62 |
|
|
extern unsigned char mca_read_pos(int slot, int reg);
|
| 63 |
|
|
|
| 64 |
|
|
/* write a byte to the specified POS register. */
|
| 65 |
|
|
extern void mca_write_pos(int slot, int reg, unsigned char byte);
|
| 66 |
|
|
|
| 67 |
|
|
#endif
|
