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Fixed MTP to work with TWRP

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awab228 2018-06-19 23:16:04 +02:00
commit f6dfaef42e
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85
drivers/misc/ibmasm/lowlevel.c Normal file
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/*
* IBM ASM Service Processor Device Driver
*
* 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.
*
* 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;
}