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linux/drivers/scsi/megaraid/megaraid_ioctl.h

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/*
*
* Linux MegaRAID device driver
*
* Copyright (c) 2003-2004 LSI Logic Corporation.
*
* 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.
*
* FILE : megaraid_ioctl.h
*
* Definitions to interface with user level applications
*/
#ifndef _MEGARAID_IOCTL_H_
#define _MEGARAID_IOCTL_H_
#include <linux/types.h>
#include <linux/semaphore.h>
#include "mbox_defs.h"
/*
* console messages debug levels
*/
#define CL_ANN 0 /* print unconditionally, announcements */
#define CL_DLEVEL1 1 /* debug level 1, informative */
#define CL_DLEVEL2 2 /* debug level 2, verbose */
#define CL_DLEVEL3 3 /* debug level 3, very verbose */
/**
* con_log() - console log routine
* @level : indicates the severity of the message.
* @fmt : format string
*
* con_log displays the error messages on the console based on the current
* debug level. Also it attaches the appropriate kernel severity level with
* the message.
*/
#define con_log(level, fmt) if (LSI_DBGLVL >= level) printk fmt;
/*
* Definitions & Declarations needed to use common management module
*/
#define MEGAIOC_MAGIC 'm'
#define MEGAIOCCMD _IOWR(MEGAIOC_MAGIC, 0, mimd_t)
#define MEGAIOC_QNADAP 'm' /* Query # of adapters */
#define MEGAIOC_QDRVRVER 'e' /* Query driver version */
#define MEGAIOC_QADAPINFO 'g' /* Query adapter information */
#define USCSICMD 0x80
#define UIOC_RD 0x00001
#define UIOC_WR 0x00002
#define MBOX_CMD 0x00000
#define GET_DRIVER_VER 0x10000
#define GET_N_ADAP 0x20000
#define GET_ADAP_INFO 0x30000
#define GET_CAP 0x40000
#define GET_STATS 0x50000
#define GET_IOCTL_VERSION 0x01
#define EXT_IOCTL_SIGN_SZ 16
#define EXT_IOCTL_SIGN "$$_EXTD_IOCTL_$$"
#define MBOX_LEGACY 0x00 /* ioctl has legacy mbox*/
#define MBOX_HPE 0x01 /* ioctl has hpe mbox */
#define APPTYPE_MIMD 0x00 /* old existing apps */
#define APPTYPE_UIOC 0x01 /* new apps using uioc */
#define IOCTL_ISSUE 0x00000001 /* Issue ioctl */
#define IOCTL_ABORT 0x00000002 /* Abort previous ioctl */
#define DRVRTYPE_MBOX 0x00000001 /* regular mbox driver */
#define DRVRTYPE_HPE 0x00000002 /* new hpe driver */
#define MKADAP(adapno) (MEGAIOC_MAGIC << 8 | (adapno) )
#define GETADAP(mkadap) ((mkadap) ^ MEGAIOC_MAGIC << 8)
#define MAX_DMA_POOLS 5 /* 4k, 8k, 16k, 32k, 64k*/
/**
* struct uioc_t - the common ioctl packet structure
*
* @signature : Must be "$$_EXTD_IOCTL_$$"
* @mb_type : Type of the mail box (MB_LEGACY or MB_HPE)
* @app_type : Type of the issuing application (existing or new)
* @opcode : Opcode of the command
* @adapno : Adapter number
* @cmdbuf : Pointer to buffer - can point to mbox or plain data buffer
* @xferlen : xferlen for DCMD and non mailbox commands
* @data_dir : Direction of the data transfer
* @status : Status from the driver
* @reserved : reserved bytes for future expansion
*
* @user_data : user data transfer address is saved in this
* @user_data_len: length of the data buffer sent by user app
* @user_pthru : user passthru address is saves in this (null if DCMD)
* @pthru32 : kernel address passthru (allocated per kioc)
* @pthru32_h : physicall address of @pthru32
* @list : for kioc free pool list maintenance
* @done : call back routine for llds to call when kioc is completed
* @buf_vaddr : dma pool buffer attached to kioc for data transfer
* @buf_paddr : physical address of the dma pool buffer
* @pool_index : index of the dma pool that @buf_vaddr is taken from
* @free_buf : indicates if buffer needs to be freed after kioc completes
*
* Note : All LSI drivers understand only this packet. Any other
* : format sent by applications would be converted to this.
*/
typedef struct uioc {
/* User Apps: */
uint8_t signature[EXT_IOCTL_SIGN_SZ];
uint16_t mb_type;
uint16_t app_type;
uint32_t opcode;
uint32_t adapno;
uint64_t cmdbuf;
uint32_t xferlen;
uint32_t data_dir;
int32_t status;
uint8_t reserved[128];
/* Driver Data: */
void __user * user_data;
uint32_t user_data_len;
/* 64bit alignment */
uint32_t pad_for_64bit_align;
mraid_passthru_t __user *user_pthru;
mraid_passthru_t *pthru32;
dma_addr_t pthru32_h;
struct list_head list;
void (*done)(struct uioc*);
caddr_t buf_vaddr;
dma_addr_t buf_paddr;
int8_t pool_index;
uint8_t free_buf;
uint8_t timedout;
} __attribute__ ((aligned(1024),packed)) uioc_t;
/**
* struct mraid_hba_info - information about the controller
*
* @pci_vendor_id : PCI vendor id
* @pci_device_id : PCI device id
* @subsystem_vendor_id : PCI subsystem vendor id
* @subsystem_device_id : PCI subsystem device id
* @baseport : base port of hba memory
* @pci_bus : PCI bus
* @pci_dev_fn : PCI device/function values
* @irq : interrupt vector for the device
*
* Extended information of 256 bytes about the controller. Align on the single
* byte boundary so that 32-bit applications can be run on 64-bit platform
* drivers withoug re-compilation.
* NOTE: reduce the number of reserved bytes whenever new field are added, so
* that total size of the structure remains 256 bytes.
*/
typedef struct mraid_hba_info {
uint16_t pci_vendor_id;
uint16_t pci_device_id;
uint16_t subsys_vendor_id;
uint16_t subsys_device_id;
uint64_t baseport;
uint8_t pci_bus;
uint8_t pci_dev_fn;
uint8_t pci_slot;
uint8_t irq;
uint32_t unique_id;
uint32_t host_no;
uint8_t num_ldrv;
} __attribute__ ((aligned(256), packed)) mraid_hba_info_t;
/**
* mcontroller : adapter info structure for old mimd_t apps
*
* @base : base address
* @irq : irq number
* @numldrv : number of logical drives
* @pcibus : pci bus
* @pcidev : pci device
* @pcifun : pci function
* @pciid : pci id
* @pcivendor : vendor id
* @pcislot : slot number
* @uid : unique id
*/
typedef struct mcontroller {
uint64_t base;
uint8_t irq;
uint8_t numldrv;
uint8_t pcibus;
uint16_t pcidev;
uint8_t pcifun;
uint16_t pciid;
uint16_t pcivendor;
uint8_t pcislot;
uint32_t uid;
} __attribute__ ((packed)) mcontroller_t;
/**
* mm_dmapool_t : Represents one dma pool with just one buffer
*
* @vaddr : Virtual address
* @paddr : DMA physicall address
* @bufsize : In KB - 4 = 4k, 8 = 8k etc.
* @handle : Handle to the dma pool
* @lock : lock to synchronize access to the pool
* @in_use : If pool already in use, attach new block
*/
typedef struct mm_dmapool {
caddr_t vaddr;
dma_addr_t paddr;
uint32_t buf_size;
struct dma_pool *handle;
spinlock_t lock;
uint8_t in_use;
} mm_dmapool_t;
/**
* mraid_mmadp_t: Structure that drivers pass during (un)registration
*
* @unique_id : Any unique id (usually PCI bus+dev+fn)
* @drvr_type : megaraid or hpe (DRVRTYPE_MBOX or DRVRTYPE_HPE)
* @drv_data : Driver specific; not touched by the common module
* @timeout : timeout for issued kiocs
* @max_kioc : Maximum ioctl packets acceptable by the lld
* @pdev : pci dev; used for allocating dma'ble memory
* @issue_uioc : Driver supplied routine to issue uioc_t commands
* : issue_uioc(drvr_data, kioc, ISSUE/ABORT, uioc_done)
* @quiescent : flag to indicate if ioctl can be issued to this adp
* @list : attach with the global list of adapters
* @kioc_list : block of mem for @max_kioc number of kiocs
* @kioc_pool : pool of free kiocs
* @kioc_pool_lock : protection for free pool
* @kioc_semaphore : so as not to exceed @max_kioc parallel ioctls
* @mbox_list : block of mem for @max_kioc number of mboxes
* @pthru_dma_pool : DMA pool to allocate passthru packets
* @dma_pool_list : array of dma pools
*/
typedef struct mraid_mmadp {
/* Filled by driver */
uint32_t unique_id;
uint32_t drvr_type;
unsigned long drvr_data;
uint16_t timeout;
uint8_t max_kioc;
struct pci_dev *pdev;
int(*issue_uioc)(unsigned long, uioc_t *, uint32_t);
/* Maintained by common module */
uint32_t quiescent;
struct list_head list;
uioc_t *kioc_list;
struct list_head kioc_pool;
spinlock_t kioc_pool_lock;
struct semaphore kioc_semaphore;
mbox64_t *mbox_list;
struct dma_pool *pthru_dma_pool;
mm_dmapool_t dma_pool_list[MAX_DMA_POOLS];
} mraid_mmadp_t;
int mraid_mm_register_adp(mraid_mmadp_t *);
int mraid_mm_unregister_adp(uint32_t);
uint32_t mraid_mm_adapter_app_handle(uint32_t);
#endif /* _MEGARAID_IOCTL_H_ */
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