1 files changed, 81 insertions, 0 deletions

diff --git a/drivers/misc/ibmasm/lowlevel.c b/drivers/misc/ibmasm/lowlevel.c
new file mode 100644
index 000000000000..5156de2759d8
--- /dev/null
+++ b/drivers/misc/ibmasm/lowlevel.c
@@ -0,0 +1,81 @@
+/*
+ * 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(&message->header, &header, sizeof(struct i2o_header));
+        memcpy(&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, struct pt_regs *regs)
+{
+        u32     mfa;
+        struct service_processor *sp = (struct service_processor *)dev_id;
+        void __iomem *base_address = sp->base_address;
+
+        if (!sp_interrupt_pending(base_address))
+                return IRQ_NONE;
+
+        if (mouse_interrupt_pending(sp)) {
+                ibmasm_handle_mouse_interrupt(sp);
+                mfa = get_mfa_outbound(base_address);
+                clear_mouse_interrupt(sp);
+                set_mfa_outbound(base_address, mfa);
+                return IRQ_HANDLED;
+        }
+
+        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));
+        }
+        set_mfa_outbound(base_address, mfa);
+        return IRQ_HANDLED;
+}