Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / misc / ibmasm / lowlevel.c

diff --git a/kernel/drivers/misc/ibmasm/lowlevel.c b/kernel/drivers/misc/ibmasm/lowlevel.c
new file mode 100644 (file)
index 0000000..5319ea2
--- /dev/null
+++ b/kernel/drivers/misc/ibmasm/lowlevel.c
@@ -0,0 +1,85 @@
+/*
+ * 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;
+}