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linux_dsm_epyc7002/drivers/scsi/megaraid.h
David Howells 7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00

1064 lines
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#ifndef __MEGARAID_H__
#define __MEGARAID_H__
#include <linux/spinlock.h>
#include <linux/mutex.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.
*/
/*
* Comand 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
#ifndef PCI_VENDOR_ID_LSI_LOGIC
#define PCI_VENDOR_ID_LSI_LOGIC 0x1000
#endif
#ifndef PCI_VENDOR_ID_AMI
#define PCI_VENDOR_ID_AMI 0x101E
#endif
#ifndef PCI_VENDOR_ID_DELL
#define PCI_VENDOR_ID_DELL 0x1028
#endif
#ifndef PCI_VENDOR_ID_INTEL
#define PCI_VENDOR_ID_INTEL 0x8086
#endif
#ifndef PCI_DEVICE_ID_AMI_MEGARAID
#define PCI_DEVICE_ID_AMI_MEGARAID 0x9010
#endif
#ifndef PCI_DEVICE_ID_AMI_MEGARAID2
#define PCI_DEVICE_ID_AMI_MEGARAID2 0x9060
#endif
#ifndef PCI_DEVICE_ID_AMI_MEGARAID3
#define PCI_DEVICE_ID_AMI_MEGARAID3 0x1960
#endif
#define PCI_DEVICE_ID_DISCOVERY 0x000E
#define PCI_DEVICE_ID_PERC4_DI 0x000F
#define PCI_DEVICE_ID_PERC4_QC_VERDE 0x0407
/* Sub-System Vendor IDs */
#define AMI_SUBSYS_VID 0x101E
#define DELL_SUBSYS_VID 0x1028
#define HP_SUBSYS_VID 0x103C
#define LSI_SUBSYS_VID 0x1000
#define INTEL_SUBSYS_VID 0x8086
#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;
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: temprature 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 DISBALE */
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 upto 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 applicaiton 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
#define SCSI_LIST(scp) ((struct list_head *)(&(scp)->SCp))
/*
* 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;
/* mbox64 with mbox not aligned on 16-byte boundry */
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;
struct proc_dir_entry *proc_read;
struct proc_dir_entry *proc_stat;
struct proc_dir_entry *proc_mbox;
#if MEGA_HAVE_ENH_PROC
struct proc_dir_entry *proc_rr;
struct proc_dir_entry *proc_battery;
#define MAX_PROC_CHANNELS 4
struct proc_dir_entry *proc_pdrvstat[MAX_PROC_CHANNELS];
struct proc_dir_entry *proc_rdrvstat[MAX_PROC_CHANNELS];
#endif
#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;
Scsi_Cmnd int_scmd;
struct mutex int_mtx; /* To synchronize the internal
commands */
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 (Scsi_Cmnd *, void (*)(Scsi_Cmnd *));
static scb_t * mega_build_cmd(adapter_t *, 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(Scsi_Cmnd *);
static int megaraid_reset(Scsi_Cmnd *);
static int megaraid_abort_and_reset(adapter_t *, Scsi_Cmnd *, int);
static int megaraid_biosparam(struct scsi_device *, struct block_device *,
sector_t, int []);
static int mega_print_inquiry(char *, char *);
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 inode *, 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 proc_read_config(char *, char **, off_t, int, int *, void *);
static int proc_read_stat(char *, char **, off_t, int, int *, void *);
static int proc_read_mbox(char *, char **, off_t, int, int *, void *);
static int proc_rebuild_rate(char *, char **, off_t, int, int *, void *);
static int proc_battery(char *, char **, off_t, int, int *, void *);
static int proc_pdrv_ch0(char *, char **, off_t, int, int *, void *);
static int proc_pdrv_ch1(char *, char **, off_t, int, int *, void *);
static int proc_pdrv_ch2(char *, char **, off_t, int, int *, void *);
static int proc_pdrv_ch3(char *, char **, off_t, int, int *, void *);
static int proc_pdrv(adapter_t *, char *, int);
static int proc_rdrv_10(char *, char **, off_t, int, int *, void *);
static int proc_rdrv_20(char *, char **, off_t, int, int *, void *);
static int proc_rdrv_30(char *, char **, off_t, int, int *, void *);
static int proc_rdrv_40(char *, char **, off_t, int, int *, void *);
static int proc_rdrv(adapter_t *, char *, int, int);
#endif
static int mega_adapinq(adapter_t *, dma_addr_t);
static int mega_internal_dev_inquiry(adapter_t *, u8, u8, dma_addr_t);
static int mega_support_ext_cdb(adapter_t *);
static mega_passthru* mega_prepare_passthru(adapter_t *, scb_t *,
Scsi_Cmnd *, int, int);
static mega_ext_passthru* mega_prepare_extpassthru(adapter_t *,
scb_t *, 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 void mega_internal_done(Scsi_Cmnd *);
static int mega_support_cluster(adapter_t *);
#endif
/* vi: set ts=8 sw=8 tw=78: */
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