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linux/drivers/scsi/megaraid.h
Bart Van Assche fb597392b1 scsi: megaraid: Stop using the SCSI pointer 
Set .cmd_size in the SCSI host template instead of using the SCSI pointer
from struct scsi_cmnd. This patch prepares for removal of the SCSI pointer
from struct scsi_cmnd.

Link: https://lore.kernel.org/r/20220218195117.25689-33-bvanassche@acm.org
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-02-22 21:11:05 -05:00

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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __MEGARAID_H__
#define __MEGARAID_H__
#include <linux/spinlock.h>
#include <linux/mutex.h>
#include <scsi/scsi_cmnd.h>
#define MEGARAID_VERSION \
"v2.00.4 (Release Date: Thu Feb 9 08:51:30 EST 2006)\n"
/*
* Driver features - change the values to enable or disable features in the
* driver.
*/
/*
* Command coalescing - This feature allows the driver to be able to combine
* two or more commands and issue as one command in order to boost I/O
* performance. Useful if the nature of the I/O is sequential. It is not very
* useful for random natured I/Os.
*/
#define MEGA_HAVE_COALESCING 0
/*
* Clustering support - Set this flag if you are planning to use the
* clustering services provided by the megaraid controllers and planning to
* setup a cluster
*/
#define MEGA_HAVE_CLUSTERING 1
/*
* Driver statistics - Set this flag if you are interested in statics about
* number of I/O completed on each logical drive and how many interrupts
* generated. If enabled, this information is available through /proc
* interface and through the private ioctl. Setting this flag has a
* performance penalty.
*/
#define MEGA_HAVE_STATS 0
/*
* Enhanced /proc interface - This feature will allow you to have a more
* detailed /proc interface for megaraid driver. E.g., a real time update of
* the status of the logical drives, battery status, physical drives etc.
*/
#define MEGA_HAVE_ENH_PROC 1
#define MAX_DEV_TYPE 32
#define PCI_DEVICE_ID_DISCOVERY 0x000E
#define PCI_DEVICE_ID_PERC4_DI 0x000F
#define PCI_DEVICE_ID_PERC4_QC_VERDE 0x0407
#define HBA_SIGNATURE 0x3344
#define HBA_SIGNATURE_471 0xCCCC
#define HBA_SIGNATURE_64BIT 0x0299
#define MBOX_BUSY_WAIT 10 /* wait for up to 10 usec for
mailbox to be free */
#define DEFAULT_INITIATOR_ID 7
#define MAX_SGLIST 64 /* max supported in f/w */
#define MIN_SGLIST 26 /* guaranteed to support these many */
#define MAX_COMMANDS 126
#define CMDID_INT_CMDS MAX_COMMANDS+1 /* make sure CMDID_INT_CMDS
is less than max commands
supported by any f/w */
#define MAX_CDB_LEN 10
#define MAX_EXT_CDB_LEN 16 /* we support cdb length up to 16 */
#define DEF_CMD_PER_LUN 63
#define MAX_CMD_PER_LUN MAX_COMMANDS
#define MAX_FIRMWARE_STATUS 46
#define MAX_XFER_PER_CMD (64*1024)
#define MAX_SECTORS_PER_IO 128
#define MAX_LOGICAL_DRIVES_40LD 40
#define FC_MAX_PHYSICAL_DEVICES 256
#define MAX_LOGICAL_DRIVES_8LD 8
#define MAX_CHANNELS 5
#define MAX_TARGET 15
#define MAX_PHYSICAL_DRIVES MAX_CHANNELS*MAX_TARGET
#define MAX_ROW_SIZE_40LD 32
#define MAX_ROW_SIZE_8LD 8
#define MAX_SPAN_DEPTH 8
#define NVIRT_CHAN 4 /* # of virtual channels to represent
up to 60 logical drives */
struct mbox_out {
/* 0x0 */ u8 cmd;
/* 0x1 */ u8 cmdid;
/* 0x2 */ u16 numsectors;
/* 0x4 */ u32 lba;
/* 0x8 */ u32 xferaddr;
/* 0xC */ u8 logdrv;
/* 0xD */ u8 numsgelements;
/* 0xE */ u8 resvd;
} __attribute__ ((packed));
struct mbox_in {
/* 0xF */ volatile u8 busy;
/* 0x10 */ volatile u8 numstatus;
/* 0x11 */ volatile u8 status;
/* 0x12 */ volatile u8 completed[MAX_FIRMWARE_STATUS];
volatile u8 poll;
volatile u8 ack;
} __attribute__ ((packed));
typedef struct {
struct mbox_out m_out;
struct mbox_in m_in;
} __attribute__ ((packed)) mbox_t;
typedef struct {
u32 xfer_segment_lo;
u32 xfer_segment_hi;
mbox_t mbox;
} __attribute__ ((packed)) mbox64_t;
/*
* Passthru definitions
*/
#define MAX_REQ_SENSE_LEN 0x20
typedef struct {
u8 timeout:3; /* 0=6sec/1=60sec/2=10min/3=3hrs */
u8 ars:1;
u8 reserved:3;
u8 islogical:1;
u8 logdrv; /* if islogical == 1 */
u8 channel; /* if islogical == 0 */
u8 target; /* if islogical == 0 */
u8 queuetag; /* unused */
u8 queueaction; /* unused */
u8 cdb[MAX_CDB_LEN];
u8 cdblen;
u8 reqsenselen;
u8 reqsensearea[MAX_REQ_SENSE_LEN];
u8 numsgelements;
u8 scsistatus;
u32 dataxferaddr;
u32 dataxferlen;
} __attribute__ ((packed)) mega_passthru;
/*
* Extended passthru: support CDB > 10 bytes
*/
typedef struct {
u8 timeout:3; /* 0=6sec/1=60sec/2=10min/3=3hrs */
u8 ars:1;
u8 rsvd1:1;
u8 cd_rom:1;
u8 rsvd2:1;
u8 islogical:1;
u8 logdrv; /* if islogical == 1 */
u8 channel; /* if islogical == 0 */
u8 target; /* if islogical == 0 */
u8 queuetag; /* unused */
u8 queueaction; /* unused */
u8 cdblen;
u8 rsvd3;
u8 cdb[MAX_EXT_CDB_LEN];
u8 numsgelements;
u8 status;
u8 reqsenselen;
u8 reqsensearea[MAX_REQ_SENSE_LEN];
u8 rsvd4;
u32 dataxferaddr;
u32 dataxferlen;
} __attribute__ ((packed)) mega_ext_passthru;
typedef struct {
u64 address;
u32 length;
} __attribute__ ((packed)) mega_sgl64;
typedef struct {
u32 address;
u32 length;
} __attribute__ ((packed)) mega_sglist;
/* Queued command data */
typedef struct {
int idx;
u32 state;
struct list_head list;
u8 raw_mbox[66];
u32 dma_type;
u32 dma_direction;
struct scsi_cmnd *cmd;
dma_addr_t dma_h_bulkdata;
dma_addr_t dma_h_sgdata;
mega_sglist *sgl;
mega_sgl64 *sgl64;
dma_addr_t sgl_dma_addr;
mega_passthru *pthru;
dma_addr_t pthru_dma_addr;
mega_ext_passthru *epthru;
dma_addr_t epthru_dma_addr;
} scb_t;
/*
* Flags to follow the scb as it transitions between various stages
*/
#define SCB_FREE 0x0000 /* on the free list */
#define SCB_ACTIVE 0x0001 /* off the free list */
#define SCB_PENDQ 0x0002 /* on the pending queue */
#define SCB_ISSUED 0x0004 /* issued - owner f/w */
#define SCB_ABORT 0x0008 /* Got an abort for this one */
#define SCB_RESET 0x0010 /* Got a reset for this one */
/*
* Utilities declare this strcture size as 1024 bytes. So more fields can
* be added in future.
*/
typedef struct {
u32 data_size; /* current size in bytes (not including resvd) */
u32 config_signature;
/* Current value is 0x00282008
* 0x28=MAX_LOGICAL_DRIVES,
* 0x20=Number of stripes and
* 0x08=Number of spans */
u8 fw_version[16]; /* printable ASCI string */
u8 bios_version[16]; /* printable ASCI string */
u8 product_name[80]; /* printable ASCI string */
u8 max_commands; /* Max. concurrent commands supported */
u8 nchannels; /* Number of SCSI Channels detected */
u8 fc_loop_present; /* Number of Fibre Loops detected */
u8 mem_type; /* EDO, FPM, SDRAM etc */
u32 signature;
u16 dram_size; /* In terms of MB */
u16 subsysid;
u16 subsysvid;
u8 notify_counters;
u8 pad1k[889]; /* 135 + 889 resvd = 1024 total size */
} __attribute__ ((packed)) mega_product_info;
struct notify {
u32 global_counter; /* Any change increments this counter */
u8 param_counter; /* Indicates any params changed */
u8 param_id; /* Param modified - defined below */
u16 param_val; /* New val of last param modified */
u8 write_config_counter; /* write config occurred */
u8 write_config_rsvd[3];
u8 ldrv_op_counter; /* Indicates ldrv op started/completed */
u8 ldrv_opid; /* ldrv num */
u8 ldrv_opcmd; /* ldrv operation - defined below */
u8 ldrv_opstatus; /* status of the operation */
u8 ldrv_state_counter; /* Indicates change of ldrv state */
u8 ldrv_state_id; /* ldrv num */
u8 ldrv_state_new; /* New state */
u8 ldrv_state_old; /* old state */
u8 pdrv_state_counter; /* Indicates change of ldrv state */
u8 pdrv_state_id; /* pdrv id */
u8 pdrv_state_new; /* New state */
u8 pdrv_state_old; /* old state */
u8 pdrv_fmt_counter; /* Indicates pdrv format started/over */
u8 pdrv_fmt_id; /* pdrv id */
u8 pdrv_fmt_val; /* format started/over */
u8 pdrv_fmt_rsvd;
u8 targ_xfer_counter; /* Indicates SCSI-2 Xfer rate change */
u8 targ_xfer_id; /* pdrv Id */
u8 targ_xfer_val; /* new Xfer params of last pdrv */
u8 targ_xfer_rsvd;
u8 fcloop_id_chg_counter; /* Indicates loopid changed */
u8 fcloopid_pdrvid; /* pdrv id */
u8 fcloop_id0; /* loopid on fc loop 0 */
u8 fcloop_id1; /* loopid on fc loop 1 */
u8 fcloop_state_counter; /* Indicates loop state changed */
u8 fcloop_state0; /* state of fc loop 0 */
u8 fcloop_state1; /* state of fc loop 1 */
u8 fcloop_state_rsvd;
} __attribute__ ((packed));
#define MAX_NOTIFY_SIZE 0x80
#define CUR_NOTIFY_SIZE sizeof(struct notify)
typedef struct {
u32 data_size; /* current size in bytes (not including resvd) */
struct notify notify;
u8 notify_rsvd[MAX_NOTIFY_SIZE - CUR_NOTIFY_SIZE];
u8 rebuild_rate; /* Rebuild rate (0% - 100%) */
u8 cache_flush_interval; /* In terms of Seconds */
u8 sense_alert;
u8 drive_insert_count; /* drive insertion count */
u8 battery_status;
u8 num_ldrv; /* No. of Log Drives configured */
u8 recon_state[MAX_LOGICAL_DRIVES_40LD / 8]; /* State of
reconstruct */
u16 ldrv_op_status[MAX_LOGICAL_DRIVES_40LD / 8]; /* logdrv
Status */
u32 ldrv_size[MAX_LOGICAL_DRIVES_40LD];/* Size of each log drv */
u8 ldrv_prop[MAX_LOGICAL_DRIVES_40LD];
u8 ldrv_state[MAX_LOGICAL_DRIVES_40LD];/* State of log drives */
u8 pdrv_state[FC_MAX_PHYSICAL_DEVICES];/* State of phys drvs. */
u16 pdrv_format[FC_MAX_PHYSICAL_DEVICES / 16];
u8 targ_xfer[80]; /* phys device transfer rate */
u8 pad1k[263]; /* 761 + 263reserved = 1024 bytes total size */
} __attribute__ ((packed)) mega_inquiry3;
/* Structures */
typedef struct {
u8 max_commands; /* Max concurrent commands supported */
u8 rebuild_rate; /* Rebuild rate - 0% thru 100% */
u8 max_targ_per_chan; /* Max targ per channel */
u8 nchannels; /* Number of channels on HBA */
u8 fw_version[4]; /* Firmware version */
u16 age_of_flash; /* Number of times FW has been flashed */
u8 chip_set_value; /* Contents of 0xC0000832 */
u8 dram_size; /* In MB */
u8 cache_flush_interval; /* in seconds */
u8 bios_version[4];
u8 board_type;
u8 sense_alert;
u8 write_config_count; /* Increase with every configuration
change */
u8 drive_inserted_count; /* Increase with every drive inserted
*/
u8 inserted_drive; /* Channel:Id of inserted drive */
u8 battery_status; /*
* BIT 0: battery module missing
* BIT 1: VBAD
* BIT 2: temperature high
* BIT 3: battery pack missing
* BIT 4,5:
* 00 - charge complete
* 01 - fast charge in progress
* 10 - fast charge fail
* 11 - undefined
* Bit 6: counter > 1000
* Bit 7: Undefined
*/
u8 dec_fault_bus_info;
} __attribute__ ((packed)) mega_adp_info;
typedef struct {
u8 num_ldrv; /* Number of logical drives configured */
u8 rsvd[3];
u32 ldrv_size[MAX_LOGICAL_DRIVES_8LD];
u8 ldrv_prop[MAX_LOGICAL_DRIVES_8LD];
u8 ldrv_state[MAX_LOGICAL_DRIVES_8LD];
} __attribute__ ((packed)) mega_ldrv_info;
typedef struct {
u8 pdrv_state[MAX_PHYSICAL_DRIVES];
u8 rsvd;
} __attribute__ ((packed)) mega_pdrv_info;
/* RAID inquiry: Mailbox command 0x05*/
typedef struct {
mega_adp_info adapter_info;
mega_ldrv_info logdrv_info;
mega_pdrv_info pdrv_info;
} __attribute__ ((packed)) mraid_inquiry;
/* RAID extended inquiry: Mailbox command 0x04*/
typedef struct {
mraid_inquiry raid_inq;
u16 phys_drv_format[MAX_CHANNELS];
u8 stack_attn;
u8 modem_status;
u8 rsvd[2];
} __attribute__ ((packed)) mraid_ext_inquiry;
typedef struct {
u8 channel;
u8 target;
}__attribute__ ((packed)) adp_device;
typedef struct {
u32 start_blk; /* starting block */
u32 num_blks; /* # of blocks */
adp_device device[MAX_ROW_SIZE_40LD];
}__attribute__ ((packed)) adp_span_40ld;
typedef struct {
u32 start_blk; /* starting block */
u32 num_blks; /* # of blocks */
adp_device device[MAX_ROW_SIZE_8LD];
}__attribute__ ((packed)) adp_span_8ld;
typedef struct {
u8 span_depth; /* Total # of spans */
u8 level; /* RAID level */
u8 read_ahead; /* read ahead, no read ahead, adaptive read
ahead */
u8 stripe_sz; /* Encoded stripe size */
u8 status; /* Status of the logical drive */
u8 write_mode; /* write mode, write_through/write_back */
u8 direct_io; /* direct io or through cache */
u8 row_size; /* Number of stripes in a row */
} __attribute__ ((packed)) logdrv_param;
typedef struct {
logdrv_param lparam;
adp_span_40ld span[MAX_SPAN_DEPTH];
}__attribute__ ((packed)) logdrv_40ld;
typedef struct {
logdrv_param lparam;
adp_span_8ld span[MAX_SPAN_DEPTH];
}__attribute__ ((packed)) logdrv_8ld;
typedef struct {
u8 type; /* Type of the device */
u8 cur_status; /* current status of the device */
u8 tag_depth; /* Level of tagging */
u8 sync_neg; /* sync negotiation - ENABLE or DISABLE */
u32 size; /* configurable size in terms of 512 byte
blocks */
}__attribute__ ((packed)) phys_drv;
typedef struct {
u8 nlog_drives; /* number of logical drives */
u8 resvd[3];
logdrv_40ld ldrv[MAX_LOGICAL_DRIVES_40LD];
phys_drv pdrv[MAX_PHYSICAL_DRIVES];
}__attribute__ ((packed)) disk_array_40ld;
typedef struct {
u8 nlog_drives; /* number of logical drives */
u8 resvd[3];
logdrv_8ld ldrv[MAX_LOGICAL_DRIVES_8LD];
phys_drv pdrv[MAX_PHYSICAL_DRIVES];
}__attribute__ ((packed)) disk_array_8ld;
/*
* User ioctl structure.
* This structure will be used for Traditional Method ioctl interface
* commands (0x80),Alternate Buffer Method (0x81) ioctl commands and the
* Driver ioctls.
* The Driver ioctl interface handles the commands at the driver level,
* without being sent to the card.
*/
/* system call imposed limit. Change accordingly */
#define IOCTL_MAX_DATALEN 4096
struct uioctl_t {
u32 inlen;
u32 outlen;
union {
u8 fca[16];
struct {
u8 opcode;
u8 subopcode;
u16 adapno;
#if BITS_PER_LONG == 32
u8 *buffer;
u8 pad[4];
#endif
#if BITS_PER_LONG == 64
u8 *buffer;
#endif
u32 length;
} __attribute__ ((packed)) fcs;
} __attribute__ ((packed)) ui;
u8 mbox[18]; /* 16 bytes + 2 status bytes */
mega_passthru pthru;
#if BITS_PER_LONG == 32
char __user *data; /* buffer <= 4096 for 0x80 commands */
char pad[4];
#endif
#if BITS_PER_LONG == 64
char __user *data;
#endif
} __attribute__ ((packed));
/*
* struct mcontroller is used to pass information about the controllers in the
* system. Its up to the application how to use the information. We are passing
* as much info about the cards as possible and useful. Before issuing the
* call to find information about the cards, the application needs to issue a
* ioctl first to find out the number of controllers in the system.
*/
#define MAX_CONTROLLERS 32
struct mcontroller {
u64 base;
u8 irq;
u8 numldrv;
u8 pcibus;
u16 pcidev;
u8 pcifun;
u16 pciid;
u16 pcivendor;
u8 pcislot;
u32 uid;
};
/*
* mailbox structure used for internal commands
*/
typedef struct {
u8 cmd;
u8 cmdid;
u8 opcode;
u8 subopcode;
u32 lba;
u32 xferaddr;
u8 logdrv;
u8 rsvd[3];
u8 numstatus;
u8 status;
} __attribute__ ((packed)) megacmd_t;
/*
* Defines for Driver IOCTL interface
*/
#define MEGAIOC_MAGIC 'm'
#define MEGAIOC_QNADAP 'm' /* Query # of adapters */
#define MEGAIOC_QDRVRVER 'e' /* Query driver version */
#define MEGAIOC_QADAPINFO 'g' /* Query adapter information */
#define MKADAP(adapno) (MEGAIOC_MAGIC << 8 | (adapno) )
#define GETADAP(mkadap) ( (mkadap) ^ MEGAIOC_MAGIC << 8 )
/*
* Definition for the new ioctl interface (NIT)
*/
/*
* Vendor specific Group-7 commands
*/
#define VENDOR_SPECIFIC_COMMANDS 0xE0
#define MEGA_INTERNAL_CMD VENDOR_SPECIFIC_COMMANDS + 0x01
/*
* The ioctl command. No other command shall be used for this interface
*/
#define USCSICMD VENDOR_SPECIFIC_COMMANDS
/*
* Data direction flags
*/
#define UIOC_RD 0x00001
#define UIOC_WR 0x00002
/*
* ioctl opcodes
*/
#define MBOX_CMD 0x00000 /* DCMD or passthru command */
#define GET_DRIVER_VER 0x10000 /* Get driver version */
#define GET_N_ADAP 0x20000 /* Get number of adapters */
#define GET_ADAP_INFO 0x30000 /* Get information about a adapter */
#define GET_CAP 0x40000 /* Get ioctl capabilities */
#define GET_STATS 0x50000 /* Get statistics, including error info */
/*
* The ioctl structure.
* MBOX macro converts a nitioctl_t structure to megacmd_t pointer and
* MBOX_P macro converts a nitioctl_t pointer to megacmd_t pointer.
*/
typedef struct {
char signature[8]; /* Must contain "MEGANIT" */
u32 opcode; /* opcode for the command */
u32 adapno; /* adapter number */
union {
u8 __raw_mbox[18];
void __user *__uaddr; /* xferaddr for non-mbox cmds */
}__ua;
#define uioc_rmbox __ua.__raw_mbox
#define MBOX(uioc) ((megacmd_t *)&((uioc).__ua.__raw_mbox[0]))
#define MBOX_P(uioc) ((megacmd_t __user *)&((uioc)->__ua.__raw_mbox[0]))
#define uioc_uaddr __ua.__uaddr
u32 xferlen; /* xferlen for DCMD and non-mbox
commands */
u32 flags; /* data direction flags */
}nitioctl_t;
/*
* I/O statistics for some applications like SNMP agent. The caller must
* provide the number of logical drives for which status should be reported.
*/
typedef struct {
int num_ldrv; /* Number for logical drives for which the
status should be reported. */
u32 nreads[MAX_LOGICAL_DRIVES_40LD]; /* number of reads for
each logical drive */
u32 nreadblocks[MAX_LOGICAL_DRIVES_40LD]; /* number of blocks
read for each logical
drive */
u32 nwrites[MAX_LOGICAL_DRIVES_40LD]; /* number of writes
for each logical
drive */
u32 nwriteblocks[MAX_LOGICAL_DRIVES_40LD]; /* number of blocks
writes for each
logical drive */
u32 rd_errors[MAX_LOGICAL_DRIVES_40LD]; /* number of read
errors for each
logical drive */
u32 wr_errors[MAX_LOGICAL_DRIVES_40LD]; /* number of write
errors for each
logical drive */
}megastat_t;
struct private_bios_data {
u8 geometry:4; /*
* bits 0-3 - BIOS geometry
* 0x0001 - 1GB
* 0x0010 - 2GB
* 0x1000 - 8GB
* Others values are invalid
*/
u8 unused:4; /* bits 4-7 are unused */
u8 boot_drv; /*
* logical drive set as boot drive
* 0..7 - for 8LD cards
* 0..39 - for 40LD cards
*/
u8 rsvd[12];
u16 cksum; /* 0-(sum of first 13 bytes of this structure) */
} __attribute__ ((packed));
/*
* Mailbox and firmware commands and subopcodes used in this driver.
*/
#define MEGA_MBOXCMD_LREAD 0x01
#define MEGA_MBOXCMD_LWRITE 0x02
#define MEGA_MBOXCMD_PASSTHRU 0x03
#define MEGA_MBOXCMD_ADPEXTINQ 0x04
#define MEGA_MBOXCMD_ADAPTERINQ 0x05
#define MEGA_MBOXCMD_LREAD64 0xA7
#define MEGA_MBOXCMD_LWRITE64 0xA8
#define MEGA_MBOXCMD_PASSTHRU64 0xC3
#define MEGA_MBOXCMD_EXTPTHRU 0xE3
#define MAIN_MISC_OPCODE 0xA4 /* f/w misc opcode */
#define GET_MAX_SG_SUPPORT 0x01 /* get max sg len supported by f/w */
#define FC_NEW_CONFIG 0xA1
#define NC_SUBOP_PRODUCT_INFO 0x0E
#define NC_SUBOP_ENQUIRY3 0x0F
#define ENQ3_GET_SOLICITED_FULL 0x02
#define OP_DCMD_READ_CONFIG 0x04
#define NEW_READ_CONFIG_8LD 0x67
#define READ_CONFIG_8LD 0x07
#define FLUSH_ADAPTER 0x0A
#define FLUSH_SYSTEM 0xFE
/*
* Command for random deletion of logical drives
*/
#define FC_DEL_LOGDRV 0xA4 /* f/w command */
#define OP_SUP_DEL_LOGDRV 0x2A /* is feature supported */
#define OP_GET_LDID_MAP 0x18 /* get ldid and logdrv number map */
#define OP_DEL_LOGDRV 0x1C /* delete logical drive */
/*
* BIOS commands
*/
#define IS_BIOS_ENABLED 0x62
#define GET_BIOS 0x01
#define CHNL_CLASS 0xA9
#define GET_CHNL_CLASS 0x00
#define SET_CHNL_CLASS 0x01
#define CH_RAID 0x01
#define CH_SCSI 0x00
#define BIOS_PVT_DATA 0x40
#define GET_BIOS_PVT_DATA 0x00
/*
* Commands to support clustering
*/
#define MEGA_GET_TARGET_ID 0x7D
#define MEGA_CLUSTER_OP 0x70
#define MEGA_GET_CLUSTER_MODE 0x02
#define MEGA_CLUSTER_CMD 0x6E
#define MEGA_RESERVE_LD 0x01
#define MEGA_RELEASE_LD 0x02
#define MEGA_RESET_RESERVATIONS 0x03
#define MEGA_RESERVATION_STATUS 0x04
#define MEGA_RESERVE_PD 0x05
#define MEGA_RELEASE_PD 0x06
/*
* Module battery status
*/
#define MEGA_BATT_MODULE_MISSING 0x01
#define MEGA_BATT_LOW_VOLTAGE 0x02
#define MEGA_BATT_TEMP_HIGH 0x04
#define MEGA_BATT_PACK_MISSING 0x08
#define MEGA_BATT_CHARGE_MASK 0x30
#define MEGA_BATT_CHARGE_DONE 0x00
#define MEGA_BATT_CHARGE_INPROG 0x10
#define MEGA_BATT_CHARGE_FAIL 0x20
#define MEGA_BATT_CYCLES_EXCEEDED 0x40
/*
* Physical drive states.
*/
#define PDRV_UNCNF 0
#define PDRV_ONLINE 3
#define PDRV_FAILED 4
#define PDRV_RBLD 5
#define PDRV_HOTSPARE 6
/*
* Raid logical drive states.
*/
#define RDRV_OFFLINE 0
#define RDRV_DEGRADED 1
#define RDRV_OPTIMAL 2
#define RDRV_DELETED 3
/*
* Read, write and cache policies
*/
#define NO_READ_AHEAD 0
#define READ_AHEAD 1
#define ADAP_READ_AHEAD 2
#define WRMODE_WRITE_THRU 0
#define WRMODE_WRITE_BACK 1
#define CACHED_IO 0
#define DIRECT_IO 1
struct megaraid_cmd_priv {
struct list_head entry;
};
#define SCSI_LIST(scp) \
(&((struct megaraid_cmd_priv *)scsi_cmd_priv(scp))->entry)
struct scsi_cmd_and_priv {
struct scsi_cmnd cmd;
struct megaraid_cmd_priv priv;
};
static inline struct scsi_cmnd *
megaraid_to_scsi_cmd(struct megaraid_cmd_priv *cmd_priv)
{
/* See also scsi_mq_setup_tags() */
BUILD_BUG_ON(sizeof(struct scsi_cmd_and_priv) !=
sizeof(struct scsi_cmnd) +
sizeof(struct megaraid_cmd_priv));
return &container_of(cmd_priv, struct scsi_cmd_and_priv, priv)->cmd;
}
/*
* Each controller's soft state
*/
typedef struct {
int this_id; /* our id, may set to different than 7 if
clustering is available */
u32 flag;
unsigned long base;
void __iomem *mmio_base;
/* mbox64 with mbox not aligned on 16-byte boundary */
mbox64_t *una_mbox64;
dma_addr_t una_mbox64_dma;
volatile mbox64_t *mbox64;/* ptr to 64-bit mailbox */
volatile mbox_t *mbox; /* ptr to standard mailbox */
dma_addr_t mbox_dma;
struct pci_dev *dev;
struct list_head free_list;
struct list_head pending_list;
struct list_head completed_list;
struct Scsi_Host *host;
#define MEGA_BUFFER_SIZE (2*1024)
u8 *mega_buffer;
dma_addr_t buf_dma_handle;
mega_product_info product_info;
u8 max_cmds;
scb_t *scb_list;
atomic_t pend_cmds; /* maintain a counter for pending
commands in firmware */
#if MEGA_HAVE_STATS
u32 nreads[MAX_LOGICAL_DRIVES_40LD];
u32 nreadblocks[MAX_LOGICAL_DRIVES_40LD];
u32 nwrites[MAX_LOGICAL_DRIVES_40LD];
u32 nwriteblocks[MAX_LOGICAL_DRIVES_40LD];
u32 rd_errors[MAX_LOGICAL_DRIVES_40LD];
u32 wr_errors[MAX_LOGICAL_DRIVES_40LD];
#endif
/* Host adapter parameters */
u8 numldrv;
u8 fw_version[7];
u8 bios_version[7];
#ifdef CONFIG_PROC_FS
struct proc_dir_entry *controller_proc_dir_entry;
#endif
int has_64bit_addr; /* are we using 64-bit addressing */
int support_ext_cdb;
int boot_ldrv_enabled;
int boot_ldrv;
int boot_pdrv_enabled; /* boot from physical drive */
int boot_pdrv_ch; /* boot physical drive channel */
int boot_pdrv_tgt; /* boot physical drive target */
int support_random_del; /* Do we support random deletion of
logdrvs */
int read_ldidmap; /* set after logical drive deltion. The
logical drive number must be read from the
map */
atomic_t quiescent; /* a stage reached when delete logical
drive needs to be done. Stop
sending requests to the hba till
delete operation is completed */
spinlock_t lock;
u8 logdrv_chan[MAX_CHANNELS+NVIRT_CHAN]; /* logical drive are on
what channels. */
int mega_ch_class;
u8 sglen; /* f/w supported scatter-gather list length */
scb_t int_scb;
struct mutex int_mtx; /* To synchronize the internal
commands */
int int_status; /* status of internal cmd */
struct completion int_waitq; /* wait queue for internal
cmds */
int has_cluster; /* cluster support on this HBA */
}adapter_t;
struct mega_hbas {
int is_bios_enabled;
adapter_t *hostdata_addr;
};
/*
* For state flag. Do not use LSB(8 bits) which are
* reserved for storing info about channels.
*/
#define IN_ABORT 0x80000000L
#define IN_RESET 0x40000000L
#define BOARD_MEMMAP 0x20000000L
#define BOARD_IOMAP 0x10000000L
#define BOARD_40LD 0x08000000L
#define BOARD_64BIT 0x04000000L
#define INTR_VALID 0x40
#define PCI_CONF_AMISIG 0xa0
#define PCI_CONF_AMISIG64 0xa4
#define MEGA_DMA_TYPE_NONE 0xFFFF
#define MEGA_BULK_DATA 0x0001
#define MEGA_SGLIST 0x0002
/*
* Parameters for the io-mapped controllers
*/
/* I/O Port offsets */
#define CMD_PORT 0x00
#define ACK_PORT 0x00
#define TOGGLE_PORT 0x01
#define INTR_PORT 0x0a
#define MBOX_BUSY_PORT 0x00
#define MBOX_PORT0 0x04
#define MBOX_PORT1 0x05
#define MBOX_PORT2 0x06
#define MBOX_PORT3 0x07
#define ENABLE_MBOX_REGION 0x0B
/* I/O Port Values */
#define ISSUE_BYTE 0x10
#define ACK_BYTE 0x08
#define ENABLE_INTR_BYTE 0xc0
#define DISABLE_INTR_BYTE 0x00
#define VALID_INTR_BYTE 0x40
#define MBOX_BUSY_BYTE 0x10
#define ENABLE_MBOX_BYTE 0x00
/* Setup some port macros here */
#define issue_command(adapter) \
outb_p(ISSUE_BYTE, (adapter)->base + CMD_PORT)
#define irq_state(adapter) inb_p((adapter)->base + INTR_PORT)
#define set_irq_state(adapter, value) \
outb_p((value), (adapter)->base + INTR_PORT)
#define irq_ack(adapter) \
outb_p(ACK_BYTE, (adapter)->base + ACK_PORT)
#define irq_enable(adapter) \
outb_p(ENABLE_INTR_BYTE, (adapter)->base + TOGGLE_PORT)
#define irq_disable(adapter) \
outb_p(DISABLE_INTR_BYTE, (adapter)->base + TOGGLE_PORT)
/*
* This is our SYSDEP area. All kernel specific detail should be placed here -
* as much as possible
*/
/*
* End of SYSDEP area
*/
const char *megaraid_info (struct Scsi_Host *);
static int mega_query_adapter(adapter_t *);
static int issue_scb(adapter_t *, scb_t *);
static int mega_setup_mailbox(adapter_t *);
static int megaraid_queue (struct Scsi_Host *, struct scsi_cmnd *);
static scb_t * mega_build_cmd(adapter_t *, struct scsi_cmnd *, int *);
static void __mega_runpendq(adapter_t *);
static int issue_scb_block(adapter_t *, u_char *);
static irqreturn_t megaraid_isr_memmapped(int, void *);
static irqreturn_t megaraid_isr_iomapped(int, void *);
static void mega_free_scb(adapter_t *, scb_t *);
static int megaraid_abort(struct scsi_cmnd *);
static int megaraid_reset(struct scsi_cmnd *);
static int megaraid_abort_and_reset(adapter_t *, struct scsi_cmnd *, int);
static int megaraid_biosparam(struct scsi_device *, struct block_device *,
sector_t, int []);
static int mega_build_sglist (adapter_t *adapter, scb_t *scb,
u32 *buffer, u32 *length);
static int __mega_busywait_mbox (adapter_t *);
static void mega_rundoneq (adapter_t *);
static void mega_cmd_done(adapter_t *, u8 [], int, int);
static inline void mega_free_sgl (adapter_t *adapter);
static void mega_8_to_40ld (mraid_inquiry *inquiry,
mega_inquiry3 *enquiry3, mega_product_info *);
static int megadev_open (struct inode *, struct file *);
static int megadev_ioctl (struct file *, unsigned int, unsigned long);
static int mega_m_to_n(void __user *, nitioctl_t *);
static int mega_n_to_m(void __user *, megacmd_t *);
static int mega_init_scb (adapter_t *);
static int mega_is_bios_enabled (adapter_t *);
#ifdef CONFIG_PROC_FS
static void mega_create_proc_entry(int, struct proc_dir_entry *);
static int mega_adapinq(adapter_t *, dma_addr_t);
static int mega_internal_dev_inquiry(adapter_t *, u8, u8, dma_addr_t);
#endif
static int mega_support_ext_cdb(adapter_t *);
static mega_passthru* mega_prepare_passthru(adapter_t *, scb_t *,
struct scsi_cmnd *, int, int);
static mega_ext_passthru* mega_prepare_extpassthru(adapter_t *,
scb_t *, struct scsi_cmnd *, int, int);
static void mega_enum_raid_scsi(adapter_t *);
static void mega_get_boot_drv(adapter_t *);
static int mega_support_random_del(adapter_t *);
static int mega_del_logdrv(adapter_t *, int);
static int mega_do_del_logdrv(adapter_t *, int);
static void mega_get_max_sgl(adapter_t *);
static int mega_internal_command(adapter_t *, megacmd_t *, mega_passthru *);
static int mega_support_cluster(adapter_t *);
#endif
/* vi: set ts=8 sw=8 tw=78: */
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