mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-16 01:04:08 +08:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
68 lines
2.4 KiB
C
68 lines
2.4 KiB
C
/* -*- mode: c; c-basic-offset: 8 -*- */
|
|
|
|
/* This is the function prototypes for the old legacy MCA interface
|
|
*
|
|
* Please move your driver to the new sysfs based one instead */
|
|
|
|
#ifndef _LINUX_MCA_LEGACY_H
|
|
#define _LINUX_MCA_LEGACY_H
|
|
|
|
#include <linux/mca.h>
|
|
|
|
#warning "MCA legacy - please move your driver to the new sysfs api"
|
|
|
|
/* MCA_NOTFOUND is an error condition. The other two indicate
|
|
* motherboard POS registers contain the adapter. They might be
|
|
* returned by the mca_find_adapter() function, and can be used as
|
|
* arguments to mca_read_stored_pos(). I'm not going to allow direct
|
|
* access to the motherboard registers until we run across an adapter
|
|
* that requires it. We don't know enough about them to know if it's
|
|
* safe.
|
|
*
|
|
* See Documentation/mca.txt or one of the existing drivers for
|
|
* more information.
|
|
*/
|
|
#define MCA_NOTFOUND (-1)
|
|
|
|
|
|
|
|
/* Returns the slot of the first enabled adapter matching id. User can
|
|
* specify a starting slot beyond zero, to deal with detecting multiple
|
|
* devices. Returns MCA_NOTFOUND if id not found. Also checks the
|
|
* integrated adapters.
|
|
*/
|
|
extern int mca_find_adapter(int id, int start);
|
|
extern int mca_find_unused_adapter(int id, int start);
|
|
|
|
extern int mca_is_adapter_used(int slot);
|
|
extern int mca_mark_as_used(int slot);
|
|
extern void mca_mark_as_unused(int slot);
|
|
|
|
/* gets a byte out of POS register (stored in memory) */
|
|
extern unsigned char mca_read_stored_pos(int slot, int reg);
|
|
|
|
/* This can be expanded later. Right now, it gives us a way of
|
|
* getting meaningful information into the MCA_info structure,
|
|
* so we can have a more interesting /proc/mca.
|
|
*/
|
|
extern void mca_set_adapter_name(int slot, char* name);
|
|
|
|
/* These routines actually mess with the hardware POS registers. They
|
|
* temporarily disable the device (and interrupts), so make sure you know
|
|
* what you're doing if you use them. Furthermore, writing to a POS may
|
|
* result in two devices trying to share a resource, which in turn can
|
|
* result in multiple devices sharing memory spaces, IRQs, or even trashing
|
|
* hardware. YOU HAVE BEEN WARNED.
|
|
*
|
|
* You can only access slots with this. Motherboard registers are off
|
|
* limits.
|
|
*/
|
|
|
|
/* read a byte from the specified POS register. */
|
|
extern unsigned char mca_read_pos(int slot, int reg);
|
|
|
|
/* write a byte to the specified POS register. */
|
|
extern void mca_write_pos(int slot, int reg, unsigned char byte);
|
|
|
|
#endif
|