86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
/*
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* IBM ASM Service Processor Device Driver
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* Copyright (C) IBM Corporation, 2004
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*
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* Author: Max Asböck <amax@us.ibm.com>
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*
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*/
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#include "ibmasm.h"
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#include "lowlevel.h"
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#include "i2o.h"
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#include "dot_command.h"
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#include "remote.h"
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static struct i2o_header header = I2O_HEADER_TEMPLATE;
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int ibmasm_send_i2o_message(struct service_processor *sp)
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{
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u32 mfa;
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unsigned int command_size;
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struct i2o_message *message;
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struct command *command = sp->current_command;
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mfa = get_mfa_inbound(sp->base_address);
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if (!mfa)
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return 1;
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command_size = get_dot_command_size(command->buffer);
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header.message_size = outgoing_message_size(command_size);
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message = get_i2o_message(sp->base_address, mfa);
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memcpy_toio(&message->header, &header, sizeof(struct i2o_header));
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memcpy_toio(&message->data, command->buffer, command_size);
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set_mfa_inbound(sp->base_address, mfa);
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return 0;
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}
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irqreturn_t ibmasm_interrupt_handler(int irq, void * dev_id, struct pt_regs *regs)
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{
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u32 mfa;
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struct service_processor *sp = (struct service_processor *)dev_id;
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void __iomem *base_address = sp->base_address;
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char tsbuf[32];
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if (!sp_interrupt_pending(base_address))
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return IRQ_NONE;
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dbg("respond to interrupt at %s\n", get_timestamp(tsbuf));
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if (mouse_interrupt_pending(sp)) {
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ibmasm_handle_mouse_interrupt(sp, regs);
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clear_mouse_interrupt(sp);
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}
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mfa = get_mfa_outbound(base_address);
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if (valid_mfa(mfa)) {
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struct i2o_message *msg = get_i2o_message(base_address, mfa);
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ibmasm_receive_message(sp, &msg->data, incoming_data_size(msg));
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} else
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dbg("didn't get a valid MFA\n");
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set_mfa_outbound(base_address, mfa);
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dbg("finished interrupt at %s\n", get_timestamp(tsbuf));
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return IRQ_HANDLED;
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}
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