+++ /dev/null
-/*
- * I2O kernel space accessible structures/APIs
- *
- * (c) Copyright 1999, 2000 Red Hat Software
- *
- * 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 header file defined the I2O APIs/structures for use by
- * the I2O kernel modules.
- *
- */
-
-#ifndef _I2O_H
-#define _I2O_H
-
-#include <linux/i2o-dev.h>
-
-/* How many different OSM's are we allowing */
-#define I2O_MAX_DRIVERS 8
-
-#include <linux/pci.h>
-#include <linux/bug.h>
-#include <linux/dma-mapping.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/workqueue.h> /* work_struct */
-#include <linux/mempool.h>
-#include <linux/mutex.h>
-#include <linux/scatterlist.h>
-#include <linux/semaphore.h> /* Needed for MUTEX init macros */
-
-#include <asm/io.h>
-
-/* message queue empty */
-#define I2O_QUEUE_EMPTY 0xffffffff
-
-/*
- * Cache strategies
- */
-
-/* The NULL strategy leaves everything up to the controller. This tends to be a
- * pessimal but functional choice.
- */
-#define CACHE_NULL 0
-/* Prefetch data when reading. We continually attempt to load the next 32 sectors
- * into the controller cache.
- */
-#define CACHE_PREFETCH 1
-/* Prefetch data when reading. We sometimes attempt to load the next 32 sectors
- * into the controller cache. When an I/O is less <= 8K we assume its probably
- * not sequential and don't prefetch (default)
- */
-#define CACHE_SMARTFETCH 2
-/* Data is written to the cache and then out on to the disk. The I/O must be
- * physically on the medium before the write is acknowledged (default without
- * NVRAM)
- */
-#define CACHE_WRITETHROUGH 17
-/* Data is written to the cache and then out on to the disk. The controller
- * is permitted to write back the cache any way it wants. (default if battery
- * backed NVRAM is present). It can be useful to set this for swap regardless of
- * battery state.
- */
-#define CACHE_WRITEBACK 18
-/* Optimise for under powered controllers, especially on RAID1 and RAID0. We
- * write large I/O's directly to disk bypassing the cache to avoid the extra
- * memory copy hits. Small writes are writeback cached
- */
-#define CACHE_SMARTBACK 19
-/* Optimise for under powered controllers, especially on RAID1 and RAID0. We
- * write large I/O's directly to disk bypassing the cache to avoid the extra
- * memory copy hits. Small writes are writethrough cached. Suitable for devices
- * lacking battery backup
- */
-#define CACHE_SMARTTHROUGH 20
-
-/*
- * Ioctl structures
- */
-
-#define BLKI2OGRSTRAT _IOR('2', 1, int)
-#define BLKI2OGWSTRAT _IOR('2', 2, int)
-#define BLKI2OSRSTRAT _IOW('2', 3, int)
-#define BLKI2OSWSTRAT _IOW('2', 4, int)
-
-/*
- * I2O Function codes
- */
-
-/*
- * Executive Class
- */
-#define I2O_CMD_ADAPTER_ASSIGN 0xB3
-#define I2O_CMD_ADAPTER_READ 0xB2
-#define I2O_CMD_ADAPTER_RELEASE 0xB5
-#define I2O_CMD_BIOS_INFO_SET 0xA5
-#define I2O_CMD_BOOT_DEVICE_SET 0xA7
-#define I2O_CMD_CONFIG_VALIDATE 0xBB
-#define I2O_CMD_CONN_SETUP 0xCA
-#define I2O_CMD_DDM_DESTROY 0xB1
-#define I2O_CMD_DDM_ENABLE 0xD5
-#define I2O_CMD_DDM_QUIESCE 0xC7
-#define I2O_CMD_DDM_RESET 0xD9
-#define I2O_CMD_DDM_SUSPEND 0xAF
-#define I2O_CMD_DEVICE_ASSIGN 0xB7
-#define I2O_CMD_DEVICE_RELEASE 0xB9
-#define I2O_CMD_HRT_GET 0xA8
-#define I2O_CMD_ADAPTER_CLEAR 0xBE
-#define I2O_CMD_ADAPTER_CONNECT 0xC9
-#define I2O_CMD_ADAPTER_RESET 0xBD
-#define I2O_CMD_LCT_NOTIFY 0xA2
-#define I2O_CMD_OUTBOUND_INIT 0xA1
-#define I2O_CMD_PATH_ENABLE 0xD3
-#define I2O_CMD_PATH_QUIESCE 0xC5
-#define I2O_CMD_PATH_RESET 0xD7
-#define I2O_CMD_STATIC_MF_CREATE 0xDD
-#define I2O_CMD_STATIC_MF_RELEASE 0xDF
-#define I2O_CMD_STATUS_GET 0xA0
-#define I2O_CMD_SW_DOWNLOAD 0xA9
-#define I2O_CMD_SW_UPLOAD 0xAB
-#define I2O_CMD_SW_REMOVE 0xAD
-#define I2O_CMD_SYS_ENABLE 0xD1
-#define I2O_CMD_SYS_MODIFY 0xC1
-#define I2O_CMD_SYS_QUIESCE 0xC3
-#define I2O_CMD_SYS_TAB_SET 0xA3
-
-/*
- * Utility Class
- */
-#define I2O_CMD_UTIL_NOP 0x00
-#define I2O_CMD_UTIL_ABORT 0x01
-#define I2O_CMD_UTIL_CLAIM 0x09
-#define I2O_CMD_UTIL_RELEASE 0x0B
-#define I2O_CMD_UTIL_PARAMS_GET 0x06
-#define I2O_CMD_UTIL_PARAMS_SET 0x05
-#define I2O_CMD_UTIL_EVT_REGISTER 0x13
-#define I2O_CMD_UTIL_EVT_ACK 0x14
-#define I2O_CMD_UTIL_CONFIG_DIALOG 0x10
-#define I2O_CMD_UTIL_DEVICE_RESERVE 0x0D
-#define I2O_CMD_UTIL_DEVICE_RELEASE 0x0F
-#define I2O_CMD_UTIL_LOCK 0x17
-#define I2O_CMD_UTIL_LOCK_RELEASE 0x19
-#define I2O_CMD_UTIL_REPLY_FAULT_NOTIFY 0x15
-
-/*
- * SCSI Host Bus Adapter Class
- */
-#define I2O_CMD_SCSI_EXEC 0x81
-#define I2O_CMD_SCSI_ABORT 0x83
-#define I2O_CMD_SCSI_BUSRESET 0x27
-
-/*
- * Bus Adapter Class
- */
-#define I2O_CMD_BUS_ADAPTER_RESET 0x85
-#define I2O_CMD_BUS_RESET 0x87
-#define I2O_CMD_BUS_SCAN 0x89
-#define I2O_CMD_BUS_QUIESCE 0x8b
-
-/*
- * Random Block Storage Class
- */
-#define I2O_CMD_BLOCK_READ 0x30
-#define I2O_CMD_BLOCK_WRITE 0x31
-#define I2O_CMD_BLOCK_CFLUSH 0x37
-#define I2O_CMD_BLOCK_MLOCK 0x49
-#define I2O_CMD_BLOCK_MUNLOCK 0x4B
-#define I2O_CMD_BLOCK_MMOUNT 0x41
-#define I2O_CMD_BLOCK_MEJECT 0x43
-#define I2O_CMD_BLOCK_POWER 0x70
-
-#define I2O_CMD_PRIVATE 0xFF
-
-/* Command status values */
-
-#define I2O_CMD_IN_PROGRESS 0x01
-#define I2O_CMD_REJECTED 0x02
-#define I2O_CMD_FAILED 0x03
-#define I2O_CMD_COMPLETED 0x04
-
-/* I2O API function return values */
-
-#define I2O_RTN_NO_ERROR 0
-#define I2O_RTN_NOT_INIT 1
-#define I2O_RTN_FREE_Q_EMPTY 2
-#define I2O_RTN_TCB_ERROR 3
-#define I2O_RTN_TRANSACTION_ERROR 4
-#define I2O_RTN_ADAPTER_ALREADY_INIT 5
-#define I2O_RTN_MALLOC_ERROR 6
-#define I2O_RTN_ADPTR_NOT_REGISTERED 7
-#define I2O_RTN_MSG_REPLY_TIMEOUT 8
-#define I2O_RTN_NO_STATUS 9
-#define I2O_RTN_NO_FIRM_VER 10
-#define I2O_RTN_NO_LINK_SPEED 11
-
-/* Reply message status defines for all messages */
-
-#define I2O_REPLY_STATUS_SUCCESS 0x00
-#define I2O_REPLY_STATUS_ABORT_DIRTY 0x01
-#define I2O_REPLY_STATUS_ABORT_NO_DATA_TRANSFER 0x02
-#define I2O_REPLY_STATUS_ABORT_PARTIAL_TRANSFER 0x03
-#define I2O_REPLY_STATUS_ERROR_DIRTY 0x04
-#define I2O_REPLY_STATUS_ERROR_NO_DATA_TRANSFER 0x05
-#define I2O_REPLY_STATUS_ERROR_PARTIAL_TRANSFER 0x06
-#define I2O_REPLY_STATUS_PROCESS_ABORT_DIRTY 0x08
-#define I2O_REPLY_STATUS_PROCESS_ABORT_NO_DATA_TRANSFER 0x09
-#define I2O_REPLY_STATUS_PROCESS_ABORT_PARTIAL_TRANSFER 0x0A
-#define I2O_REPLY_STATUS_TRANSACTION_ERROR 0x0B
-#define I2O_REPLY_STATUS_PROGRESS_REPORT 0x80
-
-/* Status codes and Error Information for Parameter functions */
-
-#define I2O_PARAMS_STATUS_SUCCESS 0x00
-#define I2O_PARAMS_STATUS_BAD_KEY_ABORT 0x01
-#define I2O_PARAMS_STATUS_BAD_KEY_CONTINUE 0x02
-#define I2O_PARAMS_STATUS_BUFFER_FULL 0x03
-#define I2O_PARAMS_STATUS_BUFFER_TOO_SMALL 0x04
-#define I2O_PARAMS_STATUS_FIELD_UNREADABLE 0x05
-#define I2O_PARAMS_STATUS_FIELD_UNWRITEABLE 0x06
-#define I2O_PARAMS_STATUS_INSUFFICIENT_FIELDS 0x07
-#define I2O_PARAMS_STATUS_INVALID_GROUP_ID 0x08
-#define I2O_PARAMS_STATUS_INVALID_OPERATION 0x09
-#define I2O_PARAMS_STATUS_NO_KEY_FIELD 0x0A
-#define I2O_PARAMS_STATUS_NO_SUCH_FIELD 0x0B
-#define I2O_PARAMS_STATUS_NON_DYNAMIC_GROUP 0x0C
-#define I2O_PARAMS_STATUS_OPERATION_ERROR 0x0D
-#define I2O_PARAMS_STATUS_SCALAR_ERROR 0x0E
-#define I2O_PARAMS_STATUS_TABLE_ERROR 0x0F
-#define I2O_PARAMS_STATUS_WRONG_GROUP_TYPE 0x10
-
-/* DetailedStatusCode defines for Executive, DDM, Util and Transaction error
- * messages: Table 3-2 Detailed Status Codes.*/
-
-#define I2O_DSC_SUCCESS 0x0000
-#define I2O_DSC_BAD_KEY 0x0002
-#define I2O_DSC_TCL_ERROR 0x0003
-#define I2O_DSC_REPLY_BUFFER_FULL 0x0004
-#define I2O_DSC_NO_SUCH_PAGE 0x0005
-#define I2O_DSC_INSUFFICIENT_RESOURCE_SOFT 0x0006
-#define I2O_DSC_INSUFFICIENT_RESOURCE_HARD 0x0007
-#define I2O_DSC_CHAIN_BUFFER_TOO_LARGE 0x0009
-#define I2O_DSC_UNSUPPORTED_FUNCTION 0x000A
-#define I2O_DSC_DEVICE_LOCKED 0x000B
-#define I2O_DSC_DEVICE_RESET 0x000C
-#define I2O_DSC_INAPPROPRIATE_FUNCTION 0x000D
-#define I2O_DSC_INVALID_INITIATOR_ADDRESS 0x000E
-#define I2O_DSC_INVALID_MESSAGE_FLAGS 0x000F
-#define I2O_DSC_INVALID_OFFSET 0x0010
-#define I2O_DSC_INVALID_PARAMETER 0x0011
-#define I2O_DSC_INVALID_REQUEST 0x0012
-#define I2O_DSC_INVALID_TARGET_ADDRESS 0x0013
-#define I2O_DSC_MESSAGE_TOO_LARGE 0x0014
-#define I2O_DSC_MESSAGE_TOO_SMALL 0x0015
-#define I2O_DSC_MISSING_PARAMETER 0x0016
-#define I2O_DSC_TIMEOUT 0x0017
-#define I2O_DSC_UNKNOWN_ERROR 0x0018
-#define I2O_DSC_UNKNOWN_FUNCTION 0x0019
-#define I2O_DSC_UNSUPPORTED_VERSION 0x001A
-#define I2O_DSC_DEVICE_BUSY 0x001B
-#define I2O_DSC_DEVICE_NOT_AVAILABLE 0x001C
-
-/* DetailedStatusCode defines for Block Storage Operation: Table 6-7 Detailed
- Status Codes.*/
-
-#define I2O_BSA_DSC_SUCCESS 0x0000
-#define I2O_BSA_DSC_MEDIA_ERROR 0x0001
-#define I2O_BSA_DSC_ACCESS_ERROR 0x0002
-#define I2O_BSA_DSC_DEVICE_FAILURE 0x0003
-#define I2O_BSA_DSC_DEVICE_NOT_READY 0x0004
-#define I2O_BSA_DSC_MEDIA_NOT_PRESENT 0x0005
-#define I2O_BSA_DSC_MEDIA_LOCKED 0x0006
-#define I2O_BSA_DSC_MEDIA_FAILURE 0x0007
-#define I2O_BSA_DSC_PROTOCOL_FAILURE 0x0008
-#define I2O_BSA_DSC_BUS_FAILURE 0x0009
-#define I2O_BSA_DSC_ACCESS_VIOLATION 0x000A
-#define I2O_BSA_DSC_WRITE_PROTECTED 0x000B
-#define I2O_BSA_DSC_DEVICE_RESET 0x000C
-#define I2O_BSA_DSC_VOLUME_CHANGED 0x000D
-#define I2O_BSA_DSC_TIMEOUT 0x000E
-
-/* FailureStatusCodes, Table 3-3 Message Failure Codes */
-
-#define I2O_FSC_TRANSPORT_SERVICE_SUSPENDED 0x81
-#define I2O_FSC_TRANSPORT_SERVICE_TERMINATED 0x82
-#define I2O_FSC_TRANSPORT_CONGESTION 0x83
-#define I2O_FSC_TRANSPORT_FAILURE 0x84
-#define I2O_FSC_TRANSPORT_STATE_ERROR 0x85
-#define I2O_FSC_TRANSPORT_TIME_OUT 0x86
-#define I2O_FSC_TRANSPORT_ROUTING_FAILURE 0x87
-#define I2O_FSC_TRANSPORT_INVALID_VERSION 0x88
-#define I2O_FSC_TRANSPORT_INVALID_OFFSET 0x89
-#define I2O_FSC_TRANSPORT_INVALID_MSG_FLAGS 0x8A
-#define I2O_FSC_TRANSPORT_FRAME_TOO_SMALL 0x8B
-#define I2O_FSC_TRANSPORT_FRAME_TOO_LARGE 0x8C
-#define I2O_FSC_TRANSPORT_INVALID_TARGET_ID 0x8D
-#define I2O_FSC_TRANSPORT_INVALID_INITIATOR_ID 0x8E
-#define I2O_FSC_TRANSPORT_INVALID_INITIATOR_CONTEXT 0x8F
-#define I2O_FSC_TRANSPORT_UNKNOWN_FAILURE 0xFF
-
-/* Device Claim Types */
-#define I2O_CLAIM_PRIMARY 0x01000000
-#define I2O_CLAIM_MANAGEMENT 0x02000000
-#define I2O_CLAIM_AUTHORIZED 0x03000000
-#define I2O_CLAIM_SECONDARY 0x04000000
-
-/* Message header defines for VersionOffset */
-#define I2OVER15 0x0001
-#define I2OVER20 0x0002
-
-/* Default is 1.5 */
-#define I2OVERSION I2OVER15
-
-#define SGL_OFFSET_0 I2OVERSION
-#define SGL_OFFSET_4 (0x0040 | I2OVERSION)
-#define SGL_OFFSET_5 (0x0050 | I2OVERSION)
-#define SGL_OFFSET_6 (0x0060 | I2OVERSION)
-#define SGL_OFFSET_7 (0x0070 | I2OVERSION)
-#define SGL_OFFSET_8 (0x0080 | I2OVERSION)
-#define SGL_OFFSET_9 (0x0090 | I2OVERSION)
-#define SGL_OFFSET_10 (0x00A0 | I2OVERSION)
-#define SGL_OFFSET_11 (0x00B0 | I2OVERSION)
-#define SGL_OFFSET_12 (0x00C0 | I2OVERSION)
-#define SGL_OFFSET(x) (((x)<<4) | I2OVERSION)
-
-/* Transaction Reply Lists (TRL) Control Word structure */
-#define TRL_SINGLE_FIXED_LENGTH 0x00
-#define TRL_SINGLE_VARIABLE_LENGTH 0x40
-#define TRL_MULTIPLE_FIXED_LENGTH 0x80
-
- /* msg header defines for MsgFlags */
-#define MSG_STATIC 0x0100
-#define MSG_64BIT_CNTXT 0x0200
-#define MSG_MULTI_TRANS 0x1000
-#define MSG_FAIL 0x2000
-#define MSG_FINAL 0x4000
-#define MSG_REPLY 0x8000
-
- /* minimum size msg */
-#define THREE_WORD_MSG_SIZE 0x00030000
-#define FOUR_WORD_MSG_SIZE 0x00040000
-#define FIVE_WORD_MSG_SIZE 0x00050000
-#define SIX_WORD_MSG_SIZE 0x00060000
-#define SEVEN_WORD_MSG_SIZE 0x00070000
-#define EIGHT_WORD_MSG_SIZE 0x00080000
-#define NINE_WORD_MSG_SIZE 0x00090000
-#define TEN_WORD_MSG_SIZE 0x000A0000
-#define ELEVEN_WORD_MSG_SIZE 0x000B0000
-#define I2O_MESSAGE_SIZE(x) ((x)<<16)
-
-/* special TID assignments */
-#define ADAPTER_TID 0
-#define HOST_TID 1
-
-/* outbound queue defines */
-#define I2O_MAX_OUTBOUND_MSG_FRAMES 128
-#define I2O_OUTBOUND_MSG_FRAME_SIZE 128 /* in 32-bit words */
-
-/* inbound queue definitions */
-#define I2O_MSG_INPOOL_MIN 32
-#define I2O_INBOUND_MSG_FRAME_SIZE 128 /* in 32-bit words */
-
-#define I2O_POST_WAIT_OK 0
-#define I2O_POST_WAIT_TIMEOUT -ETIMEDOUT
-
-#define I2O_CONTEXT_LIST_MIN_LENGTH 15
-#define I2O_CONTEXT_LIST_USED 0x01
-#define I2O_CONTEXT_LIST_DELETED 0x02
-
-/* timeouts */
-#define I2O_TIMEOUT_INIT_OUTBOUND_QUEUE 15
-#define I2O_TIMEOUT_MESSAGE_GET 5
-#define I2O_TIMEOUT_RESET 30
-#define I2O_TIMEOUT_STATUS_GET 5
-#define I2O_TIMEOUT_LCT_GET 360
-#define I2O_TIMEOUT_SCSI_SCB_ABORT 240
-
-/* retries */
-#define I2O_HRT_GET_TRIES 3
-#define I2O_LCT_GET_TRIES 3
-
-/* defines for max_sectors and max_phys_segments */
-#define I2O_MAX_SECTORS 1024
-#define I2O_MAX_SECTORS_LIMITED 128
-#define I2O_MAX_PHYS_SEGMENTS BLK_MAX_SEGMENTS
-
-/*
- * Message structures
- */
-struct i2o_message {
- union {
- struct {
- u8 version_offset;
- u8 flags;
- u16 size;
- u32 target_tid:12;
- u32 init_tid:12;
- u32 function:8;
- u32 icntxt; /* initiator context */
- u32 tcntxt; /* transaction context */
- } s;
- u32 head[4];
- } u;
- /* List follows */
- u32 body[0];
-};
-
-/* MFA and I2O message used by mempool */
-struct i2o_msg_mfa {
- u32 mfa; /* MFA returned by the controller */
- struct i2o_message msg; /* I2O message */
-};
-
-/*
- * Each I2O device entity has one of these. There is one per device.
- */
-struct i2o_device {
- i2o_lct_entry lct_data; /* Device LCT information */
-
- struct i2o_controller *iop; /* Controlling IOP */
- struct list_head list; /* node in IOP devices list */
-
- struct device device;
-
- struct mutex lock; /* device lock */
-};
-
-/*
- * Event structure provided to the event handling function
- */
-struct i2o_event {
- struct work_struct work;
- struct i2o_device *i2o_dev; /* I2O device pointer from which the
- event reply was initiated */
- u16 size; /* Size of data in 32-bit words */
- u32 tcntxt; /* Transaction context used at
- registration */
- u32 event_indicator; /* Event indicator from reply */
- u32 data[0]; /* Event data from reply */
-};
-
-/*
- * I2O classes which could be handled by the OSM
- */
-struct i2o_class_id {
- u16 class_id:12;
-};
-
-/*
- * I2O driver structure for OSMs
- */
-struct i2o_driver {
- char *name; /* OSM name */
- int context; /* Low 8 bits of the transaction info */
- struct i2o_class_id *classes; /* I2O classes that this OSM handles */
-
- /* Message reply handler */
- int (*reply) (struct i2o_controller *, u32, struct i2o_message *);
-
- /* Event handler */
- work_func_t event;
-
- struct workqueue_struct *event_queue; /* Event queue */
-
- struct device_driver driver;
-
- /* notification of changes */
- void (*notify_controller_add) (struct i2o_controller *);
- void (*notify_controller_remove) (struct i2o_controller *);
- void (*notify_device_add) (struct i2o_device *);
- void (*notify_device_remove) (struct i2o_device *);
-
- struct semaphore lock;
-};
-
-/*
- * Contains DMA mapped address information
- */
-struct i2o_dma {
- void *virt;
- dma_addr_t phys;
- size_t len;
-};
-
-/*
- * Contains slab cache and mempool information
- */
-struct i2o_pool {
- char *name;
- struct kmem_cache *slab;
- mempool_t *mempool;
-};
-
-/*
- * Contains IO mapped address information
- */
-struct i2o_io {
- void __iomem *virt;
- unsigned long phys;
- unsigned long len;
-};
-
-/*
- * Context queue entry, used for 32-bit context on 64-bit systems
- */
-struct i2o_context_list_element {
- struct list_head list;
- u32 context;
- void *ptr;
- unsigned long timestamp;
-};
-
-/*
- * Each I2O controller has one of these objects
- */
-struct i2o_controller {
- char name[16];
- int unit;
- int type;
-
- struct pci_dev *pdev; /* PCI device */
-
- unsigned int promise:1; /* Promise controller */
- unsigned int adaptec:1; /* DPT / Adaptec controller */
- unsigned int raptor:1; /* split bar */
- unsigned int no_quiesce:1; /* dont quiesce before reset */
- unsigned int short_req:1; /* use small block sizes */
- unsigned int limit_sectors:1; /* limit number of sectors / request */
- unsigned int pae_support:1; /* controller has 64-bit SGL support */
-
- struct list_head devices; /* list of I2O devices */
- struct list_head list; /* Controller list */
-
- void __iomem *in_port; /* Inbout port address */
- void __iomem *out_port; /* Outbound port address */
- void __iomem *irq_status; /* Interrupt status register address */
- void __iomem *irq_mask; /* Interrupt mask register address */
-
- struct i2o_dma status; /* IOP status block */
-
- struct i2o_dma hrt; /* HW Resource Table */
- i2o_lct *lct; /* Logical Config Table */
- struct i2o_dma dlct; /* Temp LCT */
- struct mutex lct_lock; /* Lock for LCT updates */
- struct i2o_dma status_block; /* IOP status block */
-
- struct i2o_io base; /* controller messaging unit */
- struct i2o_io in_queue; /* inbound message queue Host->IOP */
- struct i2o_dma out_queue; /* outbound message queue IOP->Host */
-
- struct i2o_pool in_msg; /* mempool for inbound messages */
-
- unsigned int battery:1; /* Has a battery backup */
- unsigned int io_alloc:1; /* An I/O resource was allocated */
- unsigned int mem_alloc:1; /* A memory resource was allocated */
-
- struct resource io_resource; /* I/O resource allocated to the IOP */
- struct resource mem_resource; /* Mem resource allocated to the IOP */
-
- struct device device;
- struct i2o_device *exec; /* Executive */
-#if BITS_PER_LONG == 64
- spinlock_t context_list_lock; /* lock for context_list */
- atomic_t context_list_counter; /* needed for unique contexts */
- struct list_head context_list; /* list of context id's
- and pointers */
-#endif
- spinlock_t lock; /* lock for controller
- configuration */
- void *driver_data[I2O_MAX_DRIVERS]; /* storage for drivers */
-};
-
-/*
- * I2O System table entry
- *
- * The system table contains information about all the IOPs in the
- * system. It is sent to all IOPs so that they can create peer2peer
- * connections between them.
- */
-struct i2o_sys_tbl_entry {
- u16 org_id;
- u16 reserved1;
- u32 iop_id:12;
- u32 reserved2:20;
- u16 seg_num:12;
- u16 i2o_version:4;
- u8 iop_state;
- u8 msg_type;
- u16 frame_size;
- u16 reserved3;
- u32 last_changed;
- u32 iop_capabilities;
- u32 inbound_low;
- u32 inbound_high;
-};
-
-struct i2o_sys_tbl {
- u8 num_entries;
- u8 version;
- u16 reserved1;
- u32 change_ind;
- u32 reserved2;
- u32 reserved3;
- struct i2o_sys_tbl_entry iops[0];
-};
-
-extern struct list_head i2o_controllers;
-
-/* Message functions */
-extern struct i2o_message *i2o_msg_get_wait(struct i2o_controller *, int);
-extern int i2o_msg_post_wait_mem(struct i2o_controller *, struct i2o_message *,
- unsigned long, struct i2o_dma *);
-
-/* IOP functions */
-extern int i2o_status_get(struct i2o_controller *);
-
-extern int i2o_event_register(struct i2o_device *, struct i2o_driver *, int,
- u32);
-extern struct i2o_device *i2o_iop_find_device(struct i2o_controller *, u16);
-extern struct i2o_controller *i2o_find_iop(int);
-
-/* Functions needed for handling 64-bit pointers in 32-bit context */
-#if BITS_PER_LONG == 64
-extern u32 i2o_cntxt_list_add(struct i2o_controller *, void *);
-extern void *i2o_cntxt_list_get(struct i2o_controller *, u32);
-extern u32 i2o_cntxt_list_remove(struct i2o_controller *, void *);
-extern u32 i2o_cntxt_list_get_ptr(struct i2o_controller *, void *);
-
-static inline u32 i2o_ptr_low(void *ptr)
-{
- return (u32) (u64) ptr;
-};
-
-static inline u32 i2o_ptr_high(void *ptr)
-{
- return (u32) ((u64) ptr >> 32);
-};
-
-static inline u32 i2o_dma_low(dma_addr_t dma_addr)
-{
- return (u32) (u64) dma_addr;
-};
-
-static inline u32 i2o_dma_high(dma_addr_t dma_addr)
-{
- return (u32) ((u64) dma_addr >> 32);
-};
-#else
-static inline u32 i2o_cntxt_list_add(struct i2o_controller *c, void *ptr)
-{
- return (u32) ptr;
-};
-
-static inline void *i2o_cntxt_list_get(struct i2o_controller *c, u32 context)
-{
- return (void *)context;
-};
-
-static inline u32 i2o_cntxt_list_remove(struct i2o_controller *c, void *ptr)
-{
- return (u32) ptr;
-};
-
-static inline u32 i2o_cntxt_list_get_ptr(struct i2o_controller *c, void *ptr)
-{
- return (u32) ptr;
-};
-
-static inline u32 i2o_ptr_low(void *ptr)
-{
- return (u32) ptr;
-};
-
-static inline u32 i2o_ptr_high(void *ptr)
-{
- return 0;
-};
-
-static inline u32 i2o_dma_low(dma_addr_t dma_addr)
-{
- return (u32) dma_addr;
-};
-
-static inline u32 i2o_dma_high(dma_addr_t dma_addr)
-{
- return 0;
-};
-#endif
-
-extern u16 i2o_sg_tablesize(struct i2o_controller *c, u16 body_size);
-extern dma_addr_t i2o_dma_map_single(struct i2o_controller *c, void *ptr,
- size_t size,
- enum dma_data_direction direction,
- u32 ** sg_ptr);
-extern int i2o_dma_map_sg(struct i2o_controller *c,
- struct scatterlist *sg, int sg_count,
- enum dma_data_direction direction,
- u32 ** sg_ptr);
-extern int i2o_dma_alloc(struct device *dev, struct i2o_dma *addr, size_t len);
-extern void i2o_dma_free(struct device *dev, struct i2o_dma *addr);
-extern int i2o_dma_realloc(struct device *dev, struct i2o_dma *addr,
- size_t len);
-extern int i2o_pool_alloc(struct i2o_pool *pool, const char *name,
- size_t size, int min_nr);
-extern void i2o_pool_free(struct i2o_pool *pool);
-/* I2O driver (OSM) functions */
-extern int i2o_driver_register(struct i2o_driver *);
-extern void i2o_driver_unregister(struct i2o_driver *);
-
-/**
- * i2o_driver_notify_controller_add - Send notification of added controller
- * @drv: I2O driver
- * @c: I2O controller
- *
- * Send notification of added controller to a single registered driver.
- */
-static inline void i2o_driver_notify_controller_add(struct i2o_driver *drv,
- struct i2o_controller *c)
-{
- if (drv->notify_controller_add)
- drv->notify_controller_add(c);
-};
-
-/**
- * i2o_driver_notify_controller_remove - Send notification of removed controller
- * @drv: I2O driver
- * @c: I2O controller
- *
- * Send notification of removed controller to a single registered driver.
- */
-static inline void i2o_driver_notify_controller_remove(struct i2o_driver *drv,
- struct i2o_controller *c)
-{
- if (drv->notify_controller_remove)
- drv->notify_controller_remove(c);
-};
-
-/**
- * i2o_driver_notify_device_add - Send notification of added device
- * @drv: I2O driver
- * @i2o_dev: the added i2o_device
- *
- * Send notification of added device to a single registered driver.
- */
-static inline void i2o_driver_notify_device_add(struct i2o_driver *drv,
- struct i2o_device *i2o_dev)
-{
- if (drv->notify_device_add)
- drv->notify_device_add(i2o_dev);
-};
-
-/**
- * i2o_driver_notify_device_remove - Send notification of removed device
- * @drv: I2O driver
- * @i2o_dev: the added i2o_device
- *
- * Send notification of removed device to a single registered driver.
- */
-static inline void i2o_driver_notify_device_remove(struct i2o_driver *drv,
- struct i2o_device *i2o_dev)
-{
- if (drv->notify_device_remove)
- drv->notify_device_remove(i2o_dev);
-};
-
-extern void i2o_driver_notify_controller_add_all(struct i2o_controller *);
-extern void i2o_driver_notify_controller_remove_all(struct i2o_controller *);
-extern void i2o_driver_notify_device_add_all(struct i2o_device *);
-extern void i2o_driver_notify_device_remove_all(struct i2o_device *);
-
-/* I2O device functions */
-extern int i2o_device_claim(struct i2o_device *);
-extern int i2o_device_claim_release(struct i2o_device *);
-
-/* Exec OSM functions */
-extern int i2o_exec_lct_get(struct i2o_controller *);
-
-/* device / driver / kobject conversion functions */
-#define to_i2o_driver(drv) container_of(drv,struct i2o_driver, driver)
-#define to_i2o_device(dev) container_of(dev, struct i2o_device, device)
-#define to_i2o_controller(dev) container_of(dev, struct i2o_controller, device)
-
-/**
- * i2o_out_to_virt - Turn an I2O message to a virtual address
- * @c: controller
- * @m: message engine value
- *
- * Turn a receive message from an I2O controller bus address into
- * a Linux virtual address. The shared page frame is a linear block
- * so we simply have to shift the offset. This function does not
- * work for sender side messages as they are ioremap objects
- * provided by the I2O controller.
- */
-static inline struct i2o_message *i2o_msg_out_to_virt(struct i2o_controller *c,
- u32 m)
-{
- BUG_ON(m < c->out_queue.phys
- || m >= c->out_queue.phys + c->out_queue.len);
-
- return c->out_queue.virt + (m - c->out_queue.phys);
-};
-
-/**
- * i2o_msg_in_to_virt - Turn an I2O message to a virtual address
- * @c: controller
- * @m: message engine value
- *
- * Turn a send message from an I2O controller bus address into
- * a Linux virtual address. The shared page frame is a linear block
- * so we simply have to shift the offset. This function does not
- * work for receive side messages as they are kmalloc objects
- * in a different pool.
- */
-static inline struct i2o_message __iomem *i2o_msg_in_to_virt(struct
- i2o_controller *c,
- u32 m)
-{
- return c->in_queue.virt + m;
-};
-
-/**
- * i2o_msg_get - obtain an I2O message from the IOP
- * @c: I2O controller
- *
- * This function tries to get a message frame. If no message frame is
- * available do not wait until one is available (see also i2o_msg_get_wait).
- * The returned pointer to the message frame is not in I/O memory, it is
- * allocated from a mempool. But because a MFA is allocated from the
- * controller too it is guaranteed that i2o_msg_post() will never fail.
- *
- * On a success a pointer to the message frame is returned. If the message
- * queue is empty -EBUSY is returned and if no memory is available -ENOMEM
- * is returned.
- */
-static inline struct i2o_message *i2o_msg_get(struct i2o_controller *c)
-{
- struct i2o_msg_mfa *mmsg = mempool_alloc(c->in_msg.mempool, GFP_ATOMIC);
- if (!mmsg)
- return ERR_PTR(-ENOMEM);
-
- mmsg->mfa = readl(c->in_port);
- if (unlikely(mmsg->mfa >= c->in_queue.len)) {
- u32 mfa = mmsg->mfa;
-
- mempool_free(mmsg, c->in_msg.mempool);
-
- if (mfa == I2O_QUEUE_EMPTY)
- return ERR_PTR(-EBUSY);
- return ERR_PTR(-EFAULT);
- }
-
- return &mmsg->msg;
-};
-
-/**
- * i2o_msg_post - Post I2O message to I2O controller
- * @c: I2O controller to which the message should be send
- * @msg: message returned by i2o_msg_get()
- *
- * Post the message to the I2O controller and return immediately.
- */
-static inline void i2o_msg_post(struct i2o_controller *c,
- struct i2o_message *msg)
-{
- struct i2o_msg_mfa *mmsg;
-
- mmsg = container_of(msg, struct i2o_msg_mfa, msg);
- memcpy_toio(i2o_msg_in_to_virt(c, mmsg->mfa), msg,
- (le32_to_cpu(msg->u.head[0]) >> 16) << 2);
- writel(mmsg->mfa, c->in_port);
- mempool_free(mmsg, c->in_msg.mempool);
-};
-
-/**
- * i2o_msg_post_wait - Post and wait a message and wait until return
- * @c: controller
- * @msg: message to post
- * @timeout: time in seconds to wait
- *
- * This API allows an OSM to post a message and then be told whether or
- * not the system received a successful reply. If the message times out
- * then the value '-ETIMEDOUT' is returned.
- *
- * Returns 0 on success or negative error code on failure.
- */
-static inline int i2o_msg_post_wait(struct i2o_controller *c,
- struct i2o_message *msg,
- unsigned long timeout)
-{
- return i2o_msg_post_wait_mem(c, msg, timeout, NULL);
-};
-
-/**
- * i2o_msg_nop_mfa - Returns a fetched MFA back to the controller
- * @c: I2O controller from which the MFA was fetched
- * @mfa: MFA which should be returned
- *
- * This function must be used for preserved messages, because i2o_msg_nop()
- * also returns the allocated memory back to the msg_pool mempool.
- */
-static inline void i2o_msg_nop_mfa(struct i2o_controller *c, u32 mfa)
-{
- struct i2o_message __iomem *msg;
- u32 nop[3] = {
- THREE_WORD_MSG_SIZE | SGL_OFFSET_0,
- I2O_CMD_UTIL_NOP << 24 | HOST_TID << 12 | ADAPTER_TID,
- 0x00000000
- };
-
- msg = i2o_msg_in_to_virt(c, mfa);
- memcpy_toio(msg, nop, sizeof(nop));
- writel(mfa, c->in_port);
-};
-
-/**
- * i2o_msg_nop - Returns a message which is not used
- * @c: I2O controller from which the message was created
- * @msg: message which should be returned
- *
- * If you fetch a message via i2o_msg_get, and can't use it, you must
- * return the message with this function. Otherwise the MFA is lost as well
- * as the allocated memory from the mempool.
- */
-static inline void i2o_msg_nop(struct i2o_controller *c,
- struct i2o_message *msg)
-{
- struct i2o_msg_mfa *mmsg;
- mmsg = container_of(msg, struct i2o_msg_mfa, msg);
-
- i2o_msg_nop_mfa(c, mmsg->mfa);
- mempool_free(mmsg, c->in_msg.mempool);
-};
-
-/**
- * i2o_flush_reply - Flush reply from I2O controller
- * @c: I2O controller
- * @m: the message identifier
- *
- * The I2O controller must be informed that the reply message is not needed
- * anymore. If you forget to flush the reply, the message frame can't be
- * used by the controller anymore and is therefore lost.
- */
-static inline void i2o_flush_reply(struct i2o_controller *c, u32 m)
-{
- writel(m, c->out_port);
-};
-
-/*
- * Endian handling wrapped into the macro - keeps the core code
- * cleaner.
- */
-
-#define i2o_raw_writel(val, mem) __raw_writel(cpu_to_le32(val), mem)
-
-extern int i2o_parm_field_get(struct i2o_device *, int, int, void *, int);
-extern int i2o_parm_table_get(struct i2o_device *, int, int, int, void *, int,
- void *, int);
-
-/* debugging and troubleshooting/diagnostic helpers. */
-#define osm_printk(level, format, arg...) \
- printk(level "%s: " format, OSM_NAME , ## arg)
-
-#ifdef DEBUG
-#define osm_debug(format, arg...) \
- osm_printk(KERN_DEBUG, format , ## arg)
-#else
-#define osm_debug(format, arg...) \
- do { } while (0)
-#endif
-
-#define osm_err(format, arg...) \
- osm_printk(KERN_ERR, format , ## arg)
-#define osm_info(format, arg...) \
- osm_printk(KERN_INFO, format , ## arg)
-#define osm_warn(format, arg...) \
- osm_printk(KERN_WARNING, format , ## arg)
-
-/* debugging functions */
-extern void i2o_report_status(const char *, const char *, struct i2o_message *);
-extern void i2o_dump_message(struct i2o_message *);
-extern void i2o_dump_hrt(struct i2o_controller *c);
-extern void i2o_debug_state(struct i2o_controller *c);
-
-#endif /* _I2O_H */
Code Review / kvmfornfv.git / blobdiff