cregit-Linux how code gets into the kernel

Release 4.7 drivers/scsi/megaraid/megaraid_mbox.h

/*
 *
 *                      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_mbox.h
 */

#ifndef _MEGARAID_H_

#define _MEGARAID_H_


#include "mega_common.h"
#include "mbox_defs.h"
#include "megaraid_ioctl.h"



#define MEGARAID_VERSION	"2.20.5.1"

#define MEGARAID_EXT_VERSION	"(Release Date: Thu Nov 16 15:32:35 EST 2006)"


/*
 * Define some PCI values here until they are put in the kernel
 */

#define PCI_DEVICE_ID_PERC4_DI_DISCOVERY		0x000E

#define PCI_SUBSYS_ID_PERC4_DI_DISCOVERY		0x0123


#define PCI_DEVICE_ID_PERC4_SC				0x1960

#define PCI_SUBSYS_ID_PERC4_SC				0x0520


#define PCI_DEVICE_ID_PERC4_DC				0x1960

#define PCI_SUBSYS_ID_PERC4_DC				0x0518


#define PCI_DEVICE_ID_VERDE				0x0407


#define PCI_DEVICE_ID_PERC4_DI_EVERGLADES		0x000F

#define PCI_SUBSYS_ID_PERC4_DI_EVERGLADES		0x014A


#define PCI_DEVICE_ID_PERC4E_SI_BIGBEND			0x0013

#define PCI_SUBSYS_ID_PERC4E_SI_BIGBEND			0x016c


#define PCI_DEVICE_ID_PERC4E_DI_KOBUK			0x0013

#define PCI_SUBSYS_ID_PERC4E_DI_KOBUK			0x016d


#define PCI_DEVICE_ID_PERC4E_DI_CORVETTE		0x0013

#define PCI_SUBSYS_ID_PERC4E_DI_CORVETTE		0x016e


#define PCI_DEVICE_ID_PERC4E_DI_EXPEDITION		0x0013

#define PCI_SUBSYS_ID_PERC4E_DI_EXPEDITION		0x016f


#define PCI_DEVICE_ID_PERC4E_DI_GUADALUPE		0x0013

#define PCI_SUBSYS_ID_PERC4E_DI_GUADALUPE		0x0170


#define PCI_DEVICE_ID_DOBSON				0x0408


#define PCI_DEVICE_ID_MEGARAID_SCSI_320_0		0x1960

#define PCI_SUBSYS_ID_MEGARAID_SCSI_320_0		0xA520


#define PCI_DEVICE_ID_MEGARAID_SCSI_320_1		0x1960

#define PCI_SUBSYS_ID_MEGARAID_SCSI_320_1		0x0520


#define PCI_DEVICE_ID_MEGARAID_SCSI_320_2		0x1960

#define PCI_SUBSYS_ID_MEGARAID_SCSI_320_2		0x0518


#define PCI_DEVICE_ID_MEGARAID_I4_133_RAID		0x1960

#define PCI_SUBSYS_ID_MEGARAID_I4_133_RAID		0x0522


#define PCI_DEVICE_ID_MEGARAID_SATA_150_4		0x1960

#define PCI_SUBSYS_ID_MEGARAID_SATA_150_4		0x4523


#define PCI_DEVICE_ID_MEGARAID_SATA_150_6		0x1960

#define PCI_SUBSYS_ID_MEGARAID_SATA_150_6		0x0523


#define PCI_DEVICE_ID_LINDSAY				0x0409


#define PCI_DEVICE_ID_INTEL_RAID_SRCS16			0x1960

#define PCI_SUBSYS_ID_INTEL_RAID_SRCS16			0x0523


#define PCI_DEVICE_ID_INTEL_RAID_SRCU41L_LAKE_SHETEK	0x1960

#define PCI_SUBSYS_ID_INTEL_RAID_SRCU41L_LAKE_SHETEK	0x0520


#define PCI_SUBSYS_ID_PERC3_QC				0x0471

#define PCI_SUBSYS_ID_PERC3_DC				0x0493

#define PCI_SUBSYS_ID_PERC3_SC				0x0475

#define PCI_SUBSYS_ID_CERC_ATA100_4CH			0x0511



#define MBOX_MAX_SCSI_CMDS	128	
// number of cmds reserved for kernel

#define MBOX_MAX_USER_CMDS	32	
// number of cmds for applications

#define MBOX_DEF_CMD_PER_LUN	64	
// default commands per lun

#define MBOX_DEFAULT_SG_SIZE	26	
// default sg size supported by all fw

#define MBOX_MAX_SG_SIZE	32	
// maximum scatter-gather list size

#define MBOX_MAX_SECTORS	128	
// maximum sectors per IO

#define MBOX_TIMEOUT		30	
// timeout value for internal cmds

#define MBOX_BUSY_WAIT		10	
// max usec to wait for busy mailbox

#define MBOX_RESET_WAIT		180	
// wait these many seconds in reset

#define MBOX_RESET_EXT_WAIT	120	
// extended wait reset

#define MBOX_SYNC_WAIT_CNT	0xFFFF	
// wait loop index for synchronous mode


#define MBOX_SYNC_DELAY_200	200	
// 200 micro-seconds

/*
 * maximum transfer that can happen through the firmware commands issued
 * internnaly from the driver.
 */

#define MBOX_IBUF_SIZE		4096


/**
 * mbox_ccb_t - command control block specific to mailbox based controllers
 * @raw_mbox            : raw mailbox pointer
 * @mbox                : mailbox
 * @mbox64              : extended mailbox
 * @mbox_dma_h          : maibox dma address
 * @sgl64               : 64-bit scatter-gather list
 * @sgl32               : 32-bit scatter-gather list
 * @sgl_dma_h           : dma handle for the scatter-gather list
 * @pthru               : passthru structure
 * @pthru_dma_h         : dma handle for the passthru structure
 * @epthru              : extended passthru structure
 * @epthru_dma_h        : dma handle for extended passthru structure
 * @buf_dma_h           : dma handle for buffers w/o sg list
 *
 * command control block specific to the mailbox based controllers
 */
typedef struct {
	
uint8_t			*raw_mbox;
	
mbox_t			*mbox;
	
mbox64_t		*mbox64;
	
dma_addr_t		mbox_dma_h;
	
mbox_sgl64		*sgl64;
	
mbox_sgl32		*sgl32;
	
dma_addr_t		sgl_dma_h;
	
mraid_passthru_t	*pthru;
	
dma_addr_t		pthru_dma_h;
	
mraid_epassthru_t	*epthru;
	
dma_addr_t		epthru_dma_h;
	
dma_addr_t		buf_dma_h;
} 
mbox_ccb_t;


/**
 * mraid_device_t - adapter soft state structure for mailbox controllers
 * @una_mbox64                  : 64-bit mbox - unaligned
 * @una_mbox64_dma              : mbox dma addr - unaligned
 * @mbox                        : 32-bit mbox - aligned
 * @mbox64                      : 64-bit mbox - aligned
 * @mbox_dma                    : mbox dma addr - aligned
 * @mailbox_lock                : exclusion lock for the mailbox
 * @baseport                    : base port of hba memory
 * @baseaddr                    : mapped addr of hba memory
 * @mbox_pool                   : pool of mailboxes
 * @mbox_pool_handle            : handle for the mailbox pool memory
 * @epthru_pool                 : a pool for extended passthru commands
 * @epthru_pool_handle          : handle to the pool above
 * @sg_pool                     : pool of scatter-gather lists for this driver
 * @sg_pool_handle              : handle to the pool above
 * @ccb_list                    : list of our command control blocks
 * @uccb_list                   : list of cmd control blocks for mgmt module
 * @umbox64                     : array of mailbox for user commands (cmm)
 * @pdrv_state                  : array for state of each physical drive.
 * @last_disp                   : flag used to show device scanning
 * @hw_error                    : set if FW not responding
 * @fast_load                   : If set, skip physical device scanning
 * @channel_class               : channel class, RAID or SCSI
 * @sysfs_mtx                   : mutex to serialize access to sysfs res.
 * @sysfs_uioc                  : management packet to issue FW calls from sysfs
 * @sysfs_mbox64                : mailbox packet to issue FW calls from sysfs
 * @sysfs_buffer                : data buffer for FW commands issued from sysfs
 * @sysfs_buffer_dma            : DMA buffer for FW commands issued from sysfs
 * @sysfs_wait_q                : wait queue for sysfs operations
 * @random_del_supported        : set if the random deletion is supported
 * @curr_ldmap                  : current LDID map
 *
 * Initialization structure for mailbox controllers: memory based and IO based
 * All the fields in this structure are LLD specific and may be discovered at
 * init() or start() time.
 *
 * NOTE: The fields of this structures are placed to minimize cache misses
 */

#define MAX_LD_EXTENDED64	64
typedef struct {
	
mbox64_t			*una_mbox64;
	
dma_addr_t			una_mbox64_dma;
	
mbox_t				*mbox;
	
mbox64_t			*mbox64;
	
dma_addr_t			mbox_dma;
	
spinlock_t			mailbox_lock;
	
unsigned long			baseport;
	
void __iomem *			baseaddr;
	
struct mraid_pci_blk		mbox_pool[MBOX_MAX_SCSI_CMDS];
	
struct dma_pool			*mbox_pool_handle;
	
struct mraid_pci_blk		epthru_pool[MBOX_MAX_SCSI_CMDS];
	
struct dma_pool			*epthru_pool_handle;
	
struct mraid_pci_blk		sg_pool[MBOX_MAX_SCSI_CMDS];
	
struct dma_pool			*sg_pool_handle;
	
mbox_ccb_t			ccb_list[MBOX_MAX_SCSI_CMDS];
	
mbox_ccb_t			uccb_list[MBOX_MAX_USER_CMDS];
	
mbox64_t			umbox64[MBOX_MAX_USER_CMDS];

	
uint8_t				pdrv_state[MBOX_MAX_PHYSICAL_DRIVES];
	
uint32_t			last_disp;
	
int				hw_error;
	
int				fast_load;
	
uint8_t				channel_class;
	
struct mutex			sysfs_mtx;
	
uioc_t				*sysfs_uioc;
	
mbox64_t			*sysfs_mbox64;
	
caddr_t				sysfs_buffer;
	
dma_addr_t			sysfs_buffer_dma;
	
wait_queue_head_t		sysfs_wait_q;
	
int				random_del_supported;
	
uint16_t			curr_ldmap[MAX_LD_EXTENDED64];
} 
mraid_device_t;

// route to raid device from adapter

#define ADAP2RAIDDEV(adp)	((mraid_device_t *)((adp)->raid_device))


#define MAILBOX_LOCK(rdev)	(&(rdev)->mailbox_lock)

// Find out if this channel is a RAID or SCSI

#define IS_RAID_CH(rdev, ch)	(((rdev)->channel_class >> (ch)) & 0x01)



#define RDINDOOR(rdev)		readl((rdev)->baseaddr + 0x20)

#define RDOUTDOOR(rdev)		readl((rdev)->baseaddr + 0x2C)

#define WRINDOOR(rdev, value)	writel(value, (rdev)->baseaddr + 0x20)

#define WROUTDOOR(rdev, value)	writel(value, (rdev)->baseaddr + 0x2C)

#endif // _MEGARAID_H_

// vim: set ts=8 sw=8 tw=78:

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