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90a95af85f
The MegaRAID driver's common management module (megaraid_mm.c) creates a char device used by the management tool "megarc" from LSI Logic (and possibly other management tools). In 2.6 with udev, this device doesn't get created because it is not registered in sysfs. I first fixed this by registering a class "megaraid_mm", but realized that this should probably be moved to misc devices, instead of taking up a char major. This is because only 1 device is used, even if there are multiple adapters - the minor is never used (the adapter info is in the ioctl block sent to the driver, not detected based on the minor number as one might think). So it is a complete waste to have an entire major taken by this. So it now uses a misc device which I named "megadev0" (the name that megarc expects), and has a dynamic minor (previoulsy a dynamic major was used). I have tested this on my own system with the megarc tool, and it works just as fine as before (only now the device gets created correctly by udev). Acked-by: "Patro, Sumant" <Sumant.Patro@lsi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
102 lines
2.1 KiB
C
102 lines
2.1 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_mm.h
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*/
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#ifndef MEGARAID_MM_H
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#define MEGARAID_MM_H
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#include <linux/spinlock.h>
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#include <linux/fs.h>
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#include <asm/uaccess.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/pci.h>
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#include <linux/list.h>
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#include <linux/miscdevice.h>
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#include "mbox_defs.h"
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#include "megaraid_ioctl.h"
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#define LSI_COMMON_MOD_VERSION "2.20.2.7"
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#define LSI_COMMON_MOD_EXT_VERSION \
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"(Release Date: Sun Jul 16 00:01:03 EST 2006)"
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#define LSI_DBGLVL dbglevel
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// The smallest dma pool
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#define MRAID_MM_INIT_BUFF_SIZE 4096
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/**
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* mimd_t : Old style ioctl packet structure (deprecated)
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*
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* @inlen :
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* @outlen :
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* @fca :
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* @opcode :
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* @subopcode :
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* @adapno :
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* @buffer :
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* @pad :
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* @length :
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* @mbox :
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* @pthru :
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* @data :
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* @pad :
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*
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* Note : This structure is DEPRECATED. New applications must use
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* : uioc_t structure instead. All new hba drivers use the new
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* : format. If we get this mimd packet, we will convert it into
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* : new uioc_t format and send it to the hba drivers.
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*/
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typedef struct mimd {
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uint32_t inlen;
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uint32_t outlen;
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union {
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uint8_t fca[16];
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struct {
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uint8_t opcode;
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uint8_t subopcode;
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uint16_t adapno;
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#if BITS_PER_LONG == 32
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uint8_t __user *buffer;
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uint8_t pad[4];
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#endif
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#if BITS_PER_LONG == 64
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uint8_t __user *buffer;
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#endif
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uint32_t length;
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} __attribute__ ((packed)) fcs;
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} __attribute__ ((packed)) ui;
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uint8_t mbox[18]; /* 16 bytes + 2 status bytes */
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mraid_passthru_t pthru;
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#if BITS_PER_LONG == 32
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char __user *data; /* buffer <= 4096 for 0x80 commands */
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char pad[4];
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#endif
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#if BITS_PER_LONG == 64
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char __user *data;
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#endif
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} __attribute__ ((packed))mimd_t;
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#endif // MEGARAID_MM_H
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// vi: set ts=8 sw=8 tw=78:
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