// 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; }