1// SPDX-License-Identifier: GPL-2.0-or-later
 2/*
 3 * IBM ASM Service Processor Device Driver
 4 *
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 5 * Copyright (C) IBM Corporation, 2004
 6 *
 7 * Author: Max Asböck <amax@us.ibm.com>
 
 8 */
 9
10#include "ibmasm.h"
11#include "lowlevel.h"
12#include "i2o.h"
13#include "dot_command.h"
14#include "remote.h"
15
16static struct i2o_header header = I2O_HEADER_TEMPLATE;
17
18
19int ibmasm_send_i2o_message(struct service_processor *sp)
20{
21	u32 mfa;
22	unsigned int command_size;
23	struct i2o_message *message;
24	struct command *command = sp->current_command;
25
26	mfa = get_mfa_inbound(sp->base_address);
27	if (!mfa)
28		return 1;
29
30	command_size = get_dot_command_size(command->buffer);
31	header.message_size = outgoing_message_size(command_size);
32
33	message = get_i2o_message(sp->base_address, mfa);
34
35	memcpy_toio(&message->header, &header, sizeof(struct i2o_header));
36	memcpy_toio(&message->data, command->buffer, command_size);
37
38	set_mfa_inbound(sp->base_address, mfa);
39
40	return 0;
41}
42
43irqreturn_t ibmasm_interrupt_handler(int irq, void * dev_id)
44{
45	u32	mfa;
46	struct service_processor *sp = (struct service_processor *)dev_id;
47	void __iomem *base_address = sp->base_address;
48	char tsbuf[32];
49
50	if (!sp_interrupt_pending(base_address))
51		return IRQ_NONE;
52
53	dbg("respond to interrupt at %s\n", get_timestamp(tsbuf));
54
55	if (mouse_interrupt_pending(sp)) {
56		ibmasm_handle_mouse_interrupt(sp);
57		clear_mouse_interrupt(sp);
58	}
59
60	mfa = get_mfa_outbound(base_address);
61	if (valid_mfa(mfa)) {
62		struct i2o_message *msg = get_i2o_message(base_address, mfa);
63		ibmasm_receive_message(sp, &msg->data, incoming_data_size(msg));
64	} else
65		dbg("didn't get a valid MFA\n");
66
67	set_mfa_outbound(base_address, mfa);
68	dbg("finished interrupt at   %s\n", get_timestamp(tsbuf));
69
70	return IRQ_HANDLED;
71}

 
 1/*
 2 * IBM ASM Service Processor Device Driver
 3 *
 4 * This program is free software; you can redistribute it and/or modify
 5 * it under the terms of the GNU General Public License as published by
 6 * the Free Software Foundation; either version 2 of the License, or
 7 * (at your option) any later version.
 8 *
 9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 *
18 * Copyright (C) IBM Corporation, 2004
19 *
20 * Author: Max Asböck <amax@us.ibm.com>
21 *
22 */
23
24#include "ibmasm.h"
25#include "lowlevel.h"
26#include "i2o.h"
27#include "dot_command.h"
28#include "remote.h"
29
30static struct i2o_header header = I2O_HEADER_TEMPLATE;
31
32
33int ibmasm_send_i2o_message(struct service_processor *sp)
34{
35	u32 mfa;
36	unsigned int command_size;
37	struct i2o_message *message;
38	struct command *command = sp->current_command;
39
40	mfa = get_mfa_inbound(sp->base_address);
41	if (!mfa)
42		return 1;
43
44	command_size = get_dot_command_size(command->buffer);
45	header.message_size = outgoing_message_size(command_size);
46
47	message = get_i2o_message(sp->base_address, mfa);
48
49	memcpy_toio(&message->header, &header, sizeof(struct i2o_header));
50	memcpy_toio(&message->data, command->buffer, command_size);
51
52	set_mfa_inbound(sp->base_address, mfa);
53
54	return 0;
55}
56
57irqreturn_t ibmasm_interrupt_handler(int irq, void * dev_id)
58{
59	u32	mfa;
60	struct service_processor *sp = (struct service_processor *)dev_id;
61	void __iomem *base_address = sp->base_address;
62	char tsbuf[32];
63
64	if (!sp_interrupt_pending(base_address))
65		return IRQ_NONE;
66
67	dbg("respond to interrupt at %s\n", get_timestamp(tsbuf));
68
69	if (mouse_interrupt_pending(sp)) {
70		ibmasm_handle_mouse_interrupt(sp);
71		clear_mouse_interrupt(sp);
72	}
73
74	mfa = get_mfa_outbound(base_address);
75	if (valid_mfa(mfa)) {
76		struct i2o_message *msg = get_i2o_message(base_address, mfa);
77		ibmasm_receive_message(sp, &msg->data, incoming_data_size(msg));
78	} else
79		dbg("didn't get a valid MFA\n");
80
81	set_mfa_outbound(base_address, mfa);
82	dbg("finished interrupt at   %s\n", get_timestamp(tsbuf));
83
84	return IRQ_HANDLED;
85}