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Diffstat (limited to 'drivers/misc/ibmasm/ibmasm.h')
| -rw-r--r-- | drivers/misc/ibmasm/ibmasm.h | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/drivers/misc/ibmasm/ibmasm.h b/drivers/misc/ibmasm/ibmasm.h new file mode 100644 index 000000000000..6fec7fd8cd1a --- /dev/null +++ b/drivers/misc/ibmasm/ibmasm.h @@ -0,0 +1,229 @@ + +/* + * 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 <linux/kernel.h> +#include <linux/types.h> +#include <linux/errno.h> +#include <linux/list.h> +#include <linux/wait.h> +#include <linux/spinlock.h> +#include <linux/slab.h> +#include <linux/config.h> +#include <linux/module.h> +#include <linux/version.h> +#include <linux/interrupt.h> +#include <linux/device.h> + +/* Driver identification */ +#define DRIVER_NAME "ibmasm" +#define DRIVER_VERSION "0.4" +#define DRIVER_AUTHOR "Max Asbock" +#define DRIVER_DESC "IBM ASM Service Processor Driver" + +#define err(msg) printk(KERN_ERR "%s: " msg "\n", DRIVER_NAME) +#define info(msg) printk(KERN_INFO "%s: " msg "\n", DRIVER_NAME) + + +#define IBMASM_CMD_PENDING 0 +#define IBMASM_CMD_COMPLETE 1 +#define IBMASM_CMD_FAILED 2 + +#define IBMASM_CMD_TIMEOUT_NORMAL 45 +#define IBMASM_CMD_TIMEOUT_EXTRA 240 + +#define IBMASM_CMD_MAX_BUFFER_SIZE 0x4000 + +#define REVERSE_HEARTBEAT_TIMEOUT 120 + +#define HEARTBEAT_BUFFER_SIZE 0x400 + +#ifdef IA64 +#define IBMASM_DRIVER_VPD "Lin64 6.08 " +#else +#define IBMASM_DRIVER_VPD "Lin32 6.08 " +#endif + +#define SYSTEM_STATE_OS_UP 5 +#define SYSTEM_STATE_OS_DOWN 4 + +#define IBMASM_NAME_SIZE 16 + +#define IBMASM_NUM_EVENTS 10 +#define IBMASM_EVENT_MAX_SIZE 2048u + + +struct command { + struct list_head queue_node; + wait_queue_head_t wait; + unsigned char *buffer; + size_t buffer_size; + int status; + struct kobject kobj; +}; +#define to_command(c) container_of(c, struct command, kobj) + +static inline void command_put(struct command *cmd) +{ + kobject_put(&cmd->kobj); +} + +static inline void command_get(struct command *cmd) +{ + kobject_get(&cmd->kobj); +} + + +struct ibmasm_event { + unsigned int serial_number; + unsigned int data_size; + unsigned char data[IBMASM_EVENT_MAX_SIZE]; +}; + +struct event_buffer { + struct ibmasm_event events[IBMASM_NUM_EVENTS]; + unsigned int next_serial_number; + unsigned int next_index; + struct list_head readers; +}; + +struct event_reader { + unsigned int next_serial_number; + wait_queue_head_t wait; + struct list_head node; + unsigned int data_size; + unsigned char data[IBMASM_EVENT_MAX_SIZE]; +}; + +struct reverse_heartbeat { + wait_queue_head_t wait; + unsigned int stopped; +}; + + +/* remote console events */ +struct mouse_event { + long x; + long y; + unsigned char buttons; + unsigned char transitions; +}; + +struct keyboard_event { + unsigned long key_code; + unsigned char key_down; +}; + +struct remote_event { + unsigned long type; + union { + struct mouse_event mouse; + struct keyboard_event keyboard; + } data; +}; + +#define DRIVER_REMOTE_QUEUE_SIZE 240 + +struct remote_queue { + struct remote_event *start; + struct remote_event *end; + struct remote_event *reader; + struct remote_event *writer; + unsigned int size; + int open; + wait_queue_head_t wait; +}; + + +struct service_processor { + struct list_head node; + spinlock_t lock; + void __iomem *base_address; + unsigned int irq; + struct command *current_command; + struct command *heartbeat; + struct list_head command_queue; + struct event_buffer *event_buffer; + char dirname[IBMASM_NAME_SIZE]; + char devname[IBMASM_NAME_SIZE]; + unsigned int number; + struct remote_queue remote_queue; + int serial_line; + struct device *dev; +}; + +/* command processing */ +extern struct command *ibmasm_new_command(size_t buffer_size); +extern void ibmasm_exec_command(struct service_processor *sp, struct command *cmd); +extern void ibmasm_wait_for_response(struct command *cmd, int timeout); +extern void ibmasm_receive_command_response(struct service_processor *sp, void *response, size_t size); + +/* event processing */ +extern int ibmasm_event_buffer_init(struct service_processor *sp); +extern void ibmasm_event_buffer_exit(struct service_processor *sp); +extern void ibmasm_receive_event(struct service_processor *sp, void *data, unsigned int data_size); +extern void ibmasm_event_reader_register(struct service_processor *sp, struct event_reader *reader); +extern void ibmasm_event_reader_unregister(struct service_processor *sp, struct event_reader *reader); +extern int ibmasm_get_next_event(struct service_processor *sp, struct event_reader *reader); + +/* heartbeat - from SP to OS */ +extern void ibmasm_register_panic_notifier(void); +extern void ibmasm_unregister_panic_notifier(void); +extern int ibmasm_heartbeat_init(struct service_processor *sp); +extern void ibmasm_heartbeat_exit(struct service_processor *sp); +extern void ibmasm_receive_heartbeat(struct service_processor *sp, void *message, size_t size); + +/* reverse heartbeat - from OS to SP */ +extern void ibmasm_init_reverse_heartbeat(struct service_processor *sp, struct reverse_heartbeat *rhb); +extern int ibmasm_start_reverse_heartbeat(struct service_processor *sp, struct reverse_heartbeat *rhb); +extern void ibmasm_stop_reverse_heartbeat(struct reverse_heartbeat *rhb); + +/* dot commands */ +extern void ibmasm_receive_message(struct service_processor *sp, void *data, int data_size); +extern int ibmasm_send_driver_vpd(struct service_processor *sp); +extern int ibmasm_send_os_state(struct service_processor *sp, int os_state); + +/* low level message processing */ +extern int ibmasm_send_i2o_message(struct service_processor *sp); +extern irqreturn_t ibmasm_interrupt_handler(int irq, void * dev_id, struct pt_regs *regs); + +/* remote console */ +extern void ibmasm_handle_mouse_interrupt(struct service_processor *sp); +extern int ibmasm_init_remote_queue(struct service_processor *sp); +extern void ibmasm_free_remote_queue(struct service_processor *sp); +extern void ibmasm_advance_reader(struct remote_queue *q, unsigned int n); +extern size_t ibmasm_events_available(struct remote_queue *q); + +/* file system */ +extern int ibmasmfs_register(void); +extern void ibmasmfs_unregister(void); +extern void ibmasmfs_add_sp(struct service_processor *sp); + +/* uart */ +#ifdef CONFIG_SERIAL_8250 +extern void ibmasm_register_uart(struct service_processor *sp); +extern void ibmasm_unregister_uart(struct service_processor *sp); +#else +#define ibmasm_register_uart(sp) do { } while(0) +#define ibmasm_unregister_uart(sp) do { } while(0) +#endif |