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