mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 10:06:48 +07:00
b0defcdbd2
Modify the PCI hanling code for the IPMI driver to use the new method of tables and registering, and adds more generic PCI handling for IPMI. Unfortunately, this required a rather large rework of the way the driver did detection so it would be more event-driven. [bunk@stusta.de: make a struct static] Signed-off-by: Corey Minyard <minyard@acm.org> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
123 lines
4.6 KiB
C
123 lines
4.6 KiB
C
/*
|
|
* ipmi_si_sm.h
|
|
*
|
|
* State machine interface for low-level IPMI system management
|
|
* interface state machines. This code is the interface between
|
|
* the ipmi_smi code (that handles the policy of a KCS, SMIC, or
|
|
* BT interface) and the actual low-level state machine.
|
|
*
|
|
* Author: MontaVista Software, Inc.
|
|
* Corey Minyard <minyard@mvista.com>
|
|
* source@mvista.com
|
|
*
|
|
* Copyright 2002 MontaVista Software Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
|
|
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
|
|
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
/* This is defined by the state machines themselves, it is an opaque
|
|
data type for them to use. */
|
|
struct si_sm_data;
|
|
|
|
/* The structure for doing I/O in the state machine. The state
|
|
machine doesn't have the actual I/O routines, they are done through
|
|
this interface. */
|
|
struct si_sm_io
|
|
{
|
|
unsigned char (*inputb)(struct si_sm_io *io, unsigned int offset);
|
|
void (*outputb)(struct si_sm_io *io,
|
|
unsigned int offset,
|
|
unsigned char b);
|
|
|
|
/* Generic info used by the actual handling routines, the
|
|
state machine shouldn't touch these. */
|
|
void __iomem *addr;
|
|
int regspacing;
|
|
int regsize;
|
|
int regshift;
|
|
int addr_type;
|
|
long addr_data;
|
|
};
|
|
|
|
/* Results of SMI events. */
|
|
enum si_sm_result
|
|
{
|
|
SI_SM_CALL_WITHOUT_DELAY, /* Call the driver again immediately */
|
|
SI_SM_CALL_WITH_DELAY, /* Delay some before calling again. */
|
|
SI_SM_CALL_WITH_TICK_DELAY, /* Delay at least 1 tick before calling again. */
|
|
SI_SM_TRANSACTION_COMPLETE, /* A transaction is finished. */
|
|
SI_SM_IDLE, /* The SM is in idle state. */
|
|
SI_SM_HOSED, /* The hardware violated the state machine. */
|
|
SI_SM_ATTN /* The hardware is asserting attn and the
|
|
state machine is idle. */
|
|
};
|
|
|
|
/* Handlers for the SMI state machine. */
|
|
struct si_sm_handlers
|
|
{
|
|
/* Put the version number of the state machine here so the
|
|
upper layer can print it. */
|
|
char *version;
|
|
|
|
/* Initialize the data and return the amount of I/O space to
|
|
reserve for the space. */
|
|
unsigned int (*init_data)(struct si_sm_data *smi,
|
|
struct si_sm_io *io);
|
|
|
|
/* Start a new transaction in the state machine. This will
|
|
return -2 if the state machine is not idle, -1 if the size
|
|
is invalid (to large or too small), or 0 if the transaction
|
|
is successfully completed. */
|
|
int (*start_transaction)(struct si_sm_data *smi,
|
|
unsigned char *data, unsigned int size);
|
|
|
|
/* Return the results after the transaction. This will return
|
|
-1 if the buffer is too small, zero if no transaction is
|
|
present, or the actual length of the result data. */
|
|
int (*get_result)(struct si_sm_data *smi,
|
|
unsigned char *data, unsigned int length);
|
|
|
|
/* Call this periodically (for a polled interface) or upon
|
|
receiving an interrupt (for a interrupt-driven interface).
|
|
If interrupt driven, you should probably poll this
|
|
periodically when not in idle state. This should be called
|
|
with the time that passed since the last call, if it is
|
|
significant. Time is in microseconds. */
|
|
enum si_sm_result (*event)(struct si_sm_data *smi, long time);
|
|
|
|
/* Attempt to detect an SMI. Returns 0 on success or nonzero
|
|
on failure. */
|
|
int (*detect)(struct si_sm_data *smi);
|
|
|
|
/* The interface is shutting down, so clean it up. */
|
|
void (*cleanup)(struct si_sm_data *smi);
|
|
|
|
/* Return the size of the SMI structure in bytes. */
|
|
int (*size)(void);
|
|
};
|
|
|
|
/* Current state machines that we can use. */
|
|
extern struct si_sm_handlers kcs_smi_handlers;
|
|
extern struct si_sm_handlers smic_smi_handlers;
|
|
extern struct si_sm_handlers bt_smi_handlers;
|
|
|