Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 152 insertions, 0 deletions

diff --git a/drivers/misc/ibmasm/dot_command.c b/drivers/misc/ibmasm/dot_command.c
new file mode 100644
index 000000000..d7b2ca358
--- /dev/null
+++ b/drivers/misc/ibmasm/dot_command.c
@@ -0,0 +1,152 @@
+/*
+ * 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 "dot_command.h"
+
+/**
+ * Dispatch an incoming message to the specific handler for the message.
+ * Called from interrupt context.
+ */
+void ibmasm_receive_message(struct service_processor *sp, void *message, int message_size)
+{
+	u32 size;
+	struct dot_command_header *header = (struct dot_command_header *)message;
+
+	if (message_size == 0)
+		return;
+
+	size = get_dot_command_size(message);
+	if (size == 0)
+		return;
+
+	if (size > message_size)
+		size = message_size;
+
+	switch (header->type) {
+	case sp_event:
+		ibmasm_receive_event(sp, message, size);
+		break;
+	case sp_command_response:
+		ibmasm_receive_command_response(sp, message, size);
+		break;
+	case sp_heartbeat:
+		ibmasm_receive_heartbeat(sp, message, size);
+		break;
+	default:
+		dev_err(sp->dev, "Received unknown message from service processor\n");
+	}
+}
+
+
+#define INIT_BUFFER_SIZE 32
+
+
+/**
+ * send the 4.3.5.10 dot command (driver VPD) to the service processor
+ */
+int ibmasm_send_driver_vpd(struct service_processor *sp)
+{
+	struct command *command;
+	struct dot_command_header *header;
+	u8 *vpd_command;
+	u8 *vpd_data;
+	int result = 0;
+
+	command = ibmasm_new_command(sp, INIT_BUFFER_SIZE);
+	if (command == NULL)
+		return -ENOMEM;
+
+	header = (struct dot_command_header *)command->buffer;
+	header->type                = sp_write;
+	header->command_size        = 4;
+	header->data_size           = 16;
+	header->status              = 0;
+	header->reserved            = 0;
+
+	vpd_command = command->buffer + sizeof(struct dot_command_header);
+	vpd_command[0] = 0x4;
+	vpd_command[1] = 0x3;
+	vpd_command[2] = 0x5;
+	vpd_command[3] = 0xa;
+
+	vpd_data = vpd_command + header->command_size;
+	vpd_data[0] = 0;
+	strcat(vpd_data, IBMASM_DRIVER_VPD);
+	vpd_data[10] = 0;
+	vpd_data[15] = 0;
+
+	ibmasm_exec_command(sp, command);
+	ibmasm_wait_for_response(command, IBMASM_CMD_TIMEOUT_NORMAL);
+
+	if (command->status != IBMASM_CMD_COMPLETE)
+		result = -ENODEV;
+
+	command_put(command);
+
+	return result;
+}
+
+struct os_state_command {
+	struct dot_command_header	header;
+	unsigned char			command[3];
+	unsigned char			data;
+};
+
+/**
+ * send the 4.3.6 dot command (os state) to the service processor
+ * During driver init this function is called with os state "up".
+ * This causes the service processor to start sending heartbeats the
+ * driver.
+ * During driver exit the function is called with os state "down",
+ * causing the service processor to stop the heartbeats.
+ */
+int ibmasm_send_os_state(struct service_processor *sp, int os_state)
+{
+	struct command *cmd;
+	struct os_state_command *os_state_cmd;
+	int result = 0;
+
+	cmd = ibmasm_new_command(sp, sizeof(struct os_state_command));
+	if (cmd == NULL)
+		return -ENOMEM;
+
+	os_state_cmd = (struct os_state_command *)cmd->buffer;
+	os_state_cmd->header.type		= sp_write;
+	os_state_cmd->header.command_size	= 3;
+	os_state_cmd->header.data_size		= 1;
+	os_state_cmd->header.status		= 0;
+	os_state_cmd->command[0]		= 4;
+	os_state_cmd->command[1]		= 3;
+	os_state_cmd->command[2]		= 6;
+	os_state_cmd->data			= os_state;
+
+	ibmasm_exec_command(sp, cmd);
+	ibmasm_wait_for_response(cmd, IBMASM_CMD_TIMEOUT_NORMAL);
+
+	if (cmd->status != IBMASM_CMD_COMPLETE)
+		result = -ENODEV;
+
+	command_put(cmd);
+	return result;
+}