linux/drivers/misc/ibmasm/lowlevel.c
Thomas Gleixner 1a59d1b8e0 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
Based on 1 normalized pattern(s):

  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 program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details 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
  59 temple place suite 330 boston ma 02111 1307 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1334 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:35 -07:00

72 lines
1.7 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* IBM ASM Service Processor Device Driver
*
* Copyright (C) IBM Corporation, 2004
*
* Author: Max Asböck <amax@us.ibm.com>
*/
#include "ibmasm.h"
#include "lowlevel.h"
#include "i2o.h"
#include "dot_command.h"
#include "remote.h"
static struct i2o_header header = I2O_HEADER_TEMPLATE;
int ibmasm_send_i2o_message(struct service_processor *sp)
{
u32 mfa;
unsigned int command_size;
struct i2o_message *message;
struct command *command = sp->current_command;
mfa = get_mfa_inbound(sp->base_address);
if (!mfa)
return 1;
command_size = get_dot_command_size(command->buffer);
header.message_size = outgoing_message_size(command_size);
message = get_i2o_message(sp->base_address, mfa);
memcpy_toio(&message->header, &header, sizeof(struct i2o_header));
memcpy_toio(&message->data, command->buffer, command_size);
set_mfa_inbound(sp->base_address, mfa);
return 0;
}
irqreturn_t ibmasm_interrupt_handler(int irq, void * dev_id)
{
u32 mfa;
struct service_processor *sp = (struct service_processor *)dev_id;
void __iomem *base_address = sp->base_address;
char tsbuf[32];
if (!sp_interrupt_pending(base_address))
return IRQ_NONE;
dbg("respond to interrupt at %s\n", get_timestamp(tsbuf));
if (mouse_interrupt_pending(sp)) {
ibmasm_handle_mouse_interrupt(sp);
clear_mouse_interrupt(sp);
}
mfa = get_mfa_outbound(base_address);
if (valid_mfa(mfa)) {
struct i2o_message *msg = get_i2o_message(base_address, mfa);
ibmasm_receive_message(sp, &msg->data, incoming_data_size(msg));
} else
dbg("didn't get a valid MFA\n");
set_mfa_outbound(base_address, mfa);
dbg("finished interrupt at %s\n", get_timestamp(tsbuf));
return IRQ_HANDLED;
}