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 30 static struct i2o_header header = I2O_HEADER_TEMPLATE; 31 32 33 int 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 57 irqreturn_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 } 86