1 /* SPDX-License-Identifier: GPL-2.0 */
5 #include <linux/spinlock.h>
6 #include <linux/mutex.h>
7 #include <scsi/scsi_cmnd.h>
9 #define MEGARAID_VERSION \
10 "v2.00.4 (Release Date: Thu Feb 9 08:51:30 EST 2006)\n"
13 * Driver features - change the values to enable or disable features in the
18 * Command coalescing - This feature allows the driver to be able to combine
19 * two or more commands and issue as one command in order to boost I/O
20 * performance. Useful if the nature of the I/O is sequential. It is not very
21 * useful for random natured I/Os.
23 #define MEGA_HAVE_COALESCING 0
26 * Clustering support - Set this flag if you are planning to use the
27 * clustering services provided by the megaraid controllers and planning to
30 #define MEGA_HAVE_CLUSTERING 1
33 * Driver statistics - Set this flag if you are interested in statics about
34 * number of I/O completed on each logical drive and how many interrupts
35 * generated. If enabled, this information is available through /proc
36 * interface and through the private ioctl. Setting this flag has a
37 * performance penalty.
39 #define MEGA_HAVE_STATS 0
42 * Enhanced /proc interface - This feature will allow you to have a more
43 * detailed /proc interface for megaraid driver. E.g., a real time update of
44 * the status of the logical drives, battery status, physical drives etc.
46 #define MEGA_HAVE_ENH_PROC 1
48 #define MAX_DEV_TYPE 32
50 #define PCI_DEVICE_ID_DISCOVERY 0x000E
51 #define PCI_DEVICE_ID_PERC4_DI 0x000F
52 #define PCI_DEVICE_ID_PERC4_QC_VERDE 0x0407
54 #define HBA_SIGNATURE 0x3344
55 #define HBA_SIGNATURE_471 0xCCCC
56 #define HBA_SIGNATURE_64BIT 0x0299
58 #define MBOX_BUSY_WAIT 10 /* wait for up to 10 usec for
60 #define DEFAULT_INITIATOR_ID 7
62 #define MAX_SGLIST 64 /* max supported in f/w */
63 #define MIN_SGLIST 26 /* guaranteed to support these many */
64 #define MAX_COMMANDS 126
65 #define CMDID_INT_CMDS MAX_COMMANDS+1 /* make sure CMDID_INT_CMDS
66 is less than max commands
67 supported by any f/w */
69 #define MAX_CDB_LEN 10
70 #define MAX_EXT_CDB_LEN 16 /* we support cdb length up to 16 */
72 #define DEF_CMD_PER_LUN 63
73 #define MAX_CMD_PER_LUN MAX_COMMANDS
74 #define MAX_FIRMWARE_STATUS 46
75 #define MAX_XFER_PER_CMD (64*1024)
76 #define MAX_SECTORS_PER_IO 128
78 #define MAX_LOGICAL_DRIVES_40LD 40
79 #define FC_MAX_PHYSICAL_DEVICES 256
80 #define MAX_LOGICAL_DRIVES_8LD 8
81 #define MAX_CHANNELS 5
83 #define MAX_PHYSICAL_DRIVES MAX_CHANNELS*MAX_TARGET
84 #define MAX_ROW_SIZE_40LD 32
85 #define MAX_ROW_SIZE_8LD 8
86 #define MAX_SPAN_DEPTH 8
88 #define NVIRT_CHAN 4 /* # of virtual channels to represent
89 up to 60 logical drives */
93 /* 0x2 */ u16 numsectors;
95 /* 0x8 */ u32 xferaddr;
97 /* 0xD */ u8 numsgelements;
99 } __attribute__ ((packed));
102 /* 0xF */ volatile u8 busy;
103 /* 0x10 */ volatile u8 numstatus;
104 /* 0x11 */ volatile u8 status;
105 /* 0x12 */ volatile u8 completed[MAX_FIRMWARE_STATUS];
108 } __attribute__ ((packed));
111 struct mbox_out m_out;
113 } __attribute__ ((packed)) mbox_t;
119 } __attribute__ ((packed)) mbox64_t;
123 * Passthru definitions
125 #define MAX_REQ_SENSE_LEN 0x20
128 u8 timeout:3; /* 0=6sec/1=60sec/2=10min/3=3hrs */
132 u8 logdrv; /* if islogical == 1 */
133 u8 channel; /* if islogical == 0 */
134 u8 target; /* if islogical == 0 */
135 u8 queuetag; /* unused */
136 u8 queueaction; /* unused */
140 u8 reqsensearea[MAX_REQ_SENSE_LEN];
145 } __attribute__ ((packed)) mega_passthru;
149 * Extended passthru: support CDB > 10 bytes
152 u8 timeout:3; /* 0=6sec/1=60sec/2=10min/3=3hrs */
158 u8 logdrv; /* if islogical == 1 */
159 u8 channel; /* if islogical == 0 */
160 u8 target; /* if islogical == 0 */
161 u8 queuetag; /* unused */
162 u8 queueaction; /* unused */
165 u8 cdb[MAX_EXT_CDB_LEN];
169 u8 reqsensearea[MAX_REQ_SENSE_LEN];
173 } __attribute__ ((packed)) mega_ext_passthru;
178 } __attribute__ ((packed)) mega_sgl64;
183 } __attribute__ ((packed)) mega_sglist;
186 /* Queued command data */
190 struct list_head list;
195 struct scsi_cmnd *cmd;
196 dma_addr_t dma_h_bulkdata;
197 dma_addr_t dma_h_sgdata;
201 dma_addr_t sgl_dma_addr;
203 mega_passthru *pthru;
204 dma_addr_t pthru_dma_addr;
205 mega_ext_passthru *epthru;
206 dma_addr_t epthru_dma_addr;
210 * Flags to follow the scb as it transitions between various stages
212 #define SCB_FREE 0x0000 /* on the free list */
213 #define SCB_ACTIVE 0x0001 /* off the free list */
214 #define SCB_PENDQ 0x0002 /* on the pending queue */
215 #define SCB_ISSUED 0x0004 /* issued - owner f/w */
216 #define SCB_ABORT 0x0008 /* Got an abort for this one */
217 #define SCB_RESET 0x0010 /* Got a reset for this one */
220 * Utilities declare this strcture size as 1024 bytes. So more fields can
221 * be added in future.
224 u32 data_size; /* current size in bytes (not including resvd) */
226 u32 config_signature;
227 /* Current value is 0x00282008
228 * 0x28=MAX_LOGICAL_DRIVES,
229 * 0x20=Number of stripes and
230 * 0x08=Number of spans */
232 u8 fw_version[16]; /* printable ASCI string */
233 u8 bios_version[16]; /* printable ASCI string */
234 u8 product_name[80]; /* printable ASCI string */
236 u8 max_commands; /* Max. concurrent commands supported */
237 u8 nchannels; /* Number of SCSI Channels detected */
238 u8 fc_loop_present; /* Number of Fibre Loops detected */
239 u8 mem_type; /* EDO, FPM, SDRAM etc */
242 u16 dram_size; /* In terms of MB */
247 u8 pad1k[889]; /* 135 + 889 resvd = 1024 total size */
248 } __attribute__ ((packed)) mega_product_info;
251 u32 global_counter; /* Any change increments this counter */
253 u8 param_counter; /* Indicates any params changed */
254 u8 param_id; /* Param modified - defined below */
255 u16 param_val; /* New val of last param modified */
257 u8 write_config_counter; /* write config occurred */
258 u8 write_config_rsvd[3];
260 u8 ldrv_op_counter; /* Indicates ldrv op started/completed */
261 u8 ldrv_opid; /* ldrv num */
262 u8 ldrv_opcmd; /* ldrv operation - defined below */
263 u8 ldrv_opstatus; /* status of the operation */
265 u8 ldrv_state_counter; /* Indicates change of ldrv state */
266 u8 ldrv_state_id; /* ldrv num */
267 u8 ldrv_state_new; /* New state */
268 u8 ldrv_state_old; /* old state */
270 u8 pdrv_state_counter; /* Indicates change of ldrv state */
271 u8 pdrv_state_id; /* pdrv id */
272 u8 pdrv_state_new; /* New state */
273 u8 pdrv_state_old; /* old state */
275 u8 pdrv_fmt_counter; /* Indicates pdrv format started/over */
276 u8 pdrv_fmt_id; /* pdrv id */
277 u8 pdrv_fmt_val; /* format started/over */
280 u8 targ_xfer_counter; /* Indicates SCSI-2 Xfer rate change */
281 u8 targ_xfer_id; /* pdrv Id */
282 u8 targ_xfer_val; /* new Xfer params of last pdrv */
285 u8 fcloop_id_chg_counter; /* Indicates loopid changed */
286 u8 fcloopid_pdrvid; /* pdrv id */
287 u8 fcloop_id0; /* loopid on fc loop 0 */
288 u8 fcloop_id1; /* loopid on fc loop 1 */
290 u8 fcloop_state_counter; /* Indicates loop state changed */
291 u8 fcloop_state0; /* state of fc loop 0 */
292 u8 fcloop_state1; /* state of fc loop 1 */
293 u8 fcloop_state_rsvd;
294 } __attribute__ ((packed));
296 #define MAX_NOTIFY_SIZE 0x80
297 #define CUR_NOTIFY_SIZE sizeof(struct notify)
300 u32 data_size; /* current size in bytes (not including resvd) */
302 struct notify notify;
304 u8 notify_rsvd[MAX_NOTIFY_SIZE - CUR_NOTIFY_SIZE];
306 u8 rebuild_rate; /* Rebuild rate (0% - 100%) */
307 u8 cache_flush_interval; /* In terms of Seconds */
309 u8 drive_insert_count; /* drive insertion count */
312 u8 num_ldrv; /* No. of Log Drives configured */
313 u8 recon_state[MAX_LOGICAL_DRIVES_40LD / 8]; /* State of
315 u16 ldrv_op_status[MAX_LOGICAL_DRIVES_40LD / 8]; /* logdrv
318 u32 ldrv_size[MAX_LOGICAL_DRIVES_40LD];/* Size of each log drv */
319 u8 ldrv_prop[MAX_LOGICAL_DRIVES_40LD];
320 u8 ldrv_state[MAX_LOGICAL_DRIVES_40LD];/* State of log drives */
321 u8 pdrv_state[FC_MAX_PHYSICAL_DEVICES];/* State of phys drvs. */
322 u16 pdrv_format[FC_MAX_PHYSICAL_DEVICES / 16];
324 u8 targ_xfer[80]; /* phys device transfer rate */
325 u8 pad1k[263]; /* 761 + 263reserved = 1024 bytes total size */
326 } __attribute__ ((packed)) mega_inquiry3;
331 u8 max_commands; /* Max concurrent commands supported */
332 u8 rebuild_rate; /* Rebuild rate - 0% thru 100% */
333 u8 max_targ_per_chan; /* Max targ per channel */
334 u8 nchannels; /* Number of channels on HBA */
335 u8 fw_version[4]; /* Firmware version */
336 u16 age_of_flash; /* Number of times FW has been flashed */
337 u8 chip_set_value; /* Contents of 0xC0000832 */
338 u8 dram_size; /* In MB */
339 u8 cache_flush_interval; /* in seconds */
343 u8 write_config_count; /* Increase with every configuration
345 u8 drive_inserted_count; /* Increase with every drive inserted
347 u8 inserted_drive; /* Channel:Id of inserted drive */
348 u8 battery_status; /*
349 * BIT 0: battery module missing
351 * BIT 2: temperature high
352 * BIT 3: battery pack missing
354 * 00 - charge complete
355 * 01 - fast charge in progress
356 * 10 - fast charge fail
358 * Bit 6: counter > 1000
361 u8 dec_fault_bus_info;
362 } __attribute__ ((packed)) mega_adp_info;
366 u8 num_ldrv; /* Number of logical drives configured */
368 u32 ldrv_size[MAX_LOGICAL_DRIVES_8LD];
369 u8 ldrv_prop[MAX_LOGICAL_DRIVES_8LD];
370 u8 ldrv_state[MAX_LOGICAL_DRIVES_8LD];
371 } __attribute__ ((packed)) mega_ldrv_info;
374 u8 pdrv_state[MAX_PHYSICAL_DRIVES];
376 } __attribute__ ((packed)) mega_pdrv_info;
378 /* RAID inquiry: Mailbox command 0x05*/
380 mega_adp_info adapter_info;
381 mega_ldrv_info logdrv_info;
382 mega_pdrv_info pdrv_info;
383 } __attribute__ ((packed)) mraid_inquiry;
386 /* RAID extended inquiry: Mailbox command 0x04*/
388 mraid_inquiry raid_inq;
389 u16 phys_drv_format[MAX_CHANNELS];
393 } __attribute__ ((packed)) mraid_ext_inquiry;
399 }__attribute__ ((packed)) adp_device;
402 u32 start_blk; /* starting block */
403 u32 num_blks; /* # of blocks */
404 adp_device device[MAX_ROW_SIZE_40LD];
405 }__attribute__ ((packed)) adp_span_40ld;
408 u32 start_blk; /* starting block */
409 u32 num_blks; /* # of blocks */
410 adp_device device[MAX_ROW_SIZE_8LD];
411 }__attribute__ ((packed)) adp_span_8ld;
414 u8 span_depth; /* Total # of spans */
415 u8 level; /* RAID level */
416 u8 read_ahead; /* read ahead, no read ahead, adaptive read
418 u8 stripe_sz; /* Encoded stripe size */
419 u8 status; /* Status of the logical drive */
420 u8 write_mode; /* write mode, write_through/write_back */
421 u8 direct_io; /* direct io or through cache */
422 u8 row_size; /* Number of stripes in a row */
423 } __attribute__ ((packed)) logdrv_param;
427 adp_span_40ld span[MAX_SPAN_DEPTH];
428 }__attribute__ ((packed)) logdrv_40ld;
432 adp_span_8ld span[MAX_SPAN_DEPTH];
433 }__attribute__ ((packed)) logdrv_8ld;
436 u8 type; /* Type of the device */
437 u8 cur_status; /* current status of the device */
438 u8 tag_depth; /* Level of tagging */
439 u8 sync_neg; /* sync negotiation - ENABLE or DISABLE */
440 u32 size; /* configurable size in terms of 512 byte
442 }__attribute__ ((packed)) phys_drv;
445 u8 nlog_drives; /* number of logical drives */
447 logdrv_40ld ldrv[MAX_LOGICAL_DRIVES_40LD];
448 phys_drv pdrv[MAX_PHYSICAL_DRIVES];
449 }__attribute__ ((packed)) disk_array_40ld;
452 u8 nlog_drives; /* number of logical drives */
454 logdrv_8ld ldrv[MAX_LOGICAL_DRIVES_8LD];
455 phys_drv pdrv[MAX_PHYSICAL_DRIVES];
456 }__attribute__ ((packed)) disk_array_8ld;
460 * User ioctl structure.
461 * This structure will be used for Traditional Method ioctl interface
462 * commands (0x80),Alternate Buffer Method (0x81) ioctl commands and the
464 * The Driver ioctl interface handles the commands at the driver level,
465 * without being sent to the card.
467 /* system call imposed limit. Change accordingly */
468 #define IOCTL_MAX_DATALEN 4096
479 #if BITS_PER_LONG == 32
483 #if BITS_PER_LONG == 64
487 } __attribute__ ((packed)) fcs;
488 } __attribute__ ((packed)) ui;
489 u8 mbox[18]; /* 16 bytes + 2 status bytes */
491 #if BITS_PER_LONG == 32
492 char __user *data; /* buffer <= 4096 for 0x80 commands */
495 #if BITS_PER_LONG == 64
498 } __attribute__ ((packed));
501 * struct mcontroller is used to pass information about the controllers in the
502 * system. Its up to the application how to use the information. We are passing
503 * as much info about the cards as possible and useful. Before issuing the
504 * call to find information about the cards, the application needs to issue a
505 * ioctl first to find out the number of controllers in the system.
507 #define MAX_CONTROLLERS 32
523 * mailbox structure used for internal commands
536 } __attribute__ ((packed)) megacmd_t;
539 * Defines for Driver IOCTL interface
541 #define MEGAIOC_MAGIC 'm'
543 #define MEGAIOC_QNADAP 'm' /* Query # of adapters */
544 #define MEGAIOC_QDRVRVER 'e' /* Query driver version */
545 #define MEGAIOC_QADAPINFO 'g' /* Query adapter information */
546 #define MKADAP(adapno) (MEGAIOC_MAGIC << 8 | (adapno) )
547 #define GETADAP(mkadap) ( (mkadap) ^ MEGAIOC_MAGIC << 8 )
550 * Definition for the new ioctl interface (NIT)
554 * Vendor specific Group-7 commands
556 #define VENDOR_SPECIFIC_COMMANDS 0xE0
557 #define MEGA_INTERNAL_CMD VENDOR_SPECIFIC_COMMANDS + 0x01
560 * The ioctl command. No other command shall be used for this interface
562 #define USCSICMD VENDOR_SPECIFIC_COMMANDS
565 * Data direction flags
567 #define UIOC_RD 0x00001
568 #define UIOC_WR 0x00002
573 #define MBOX_CMD 0x00000 /* DCMD or passthru command */
574 #define GET_DRIVER_VER 0x10000 /* Get driver version */
575 #define GET_N_ADAP 0x20000 /* Get number of adapters */
576 #define GET_ADAP_INFO 0x30000 /* Get information about a adapter */
577 #define GET_CAP 0x40000 /* Get ioctl capabilities */
578 #define GET_STATS 0x50000 /* Get statistics, including error info */
582 * The ioctl structure.
583 * MBOX macro converts a nitioctl_t structure to megacmd_t pointer and
584 * MBOX_P macro converts a nitioctl_t pointer to megacmd_t pointer.
587 char signature[8]; /* Must contain "MEGANIT" */
588 u32 opcode; /* opcode for the command */
589 u32 adapno; /* adapter number */
592 void __user *__uaddr; /* xferaddr for non-mbox cmds */
595 #define uioc_rmbox __ua.__raw_mbox
596 #define MBOX(uioc) ((megacmd_t *)&((uioc).__ua.__raw_mbox[0]))
597 #define MBOX_P(uioc) ((megacmd_t __user *)&((uioc)->__ua.__raw_mbox[0]))
598 #define uioc_uaddr __ua.__uaddr
600 u32 xferlen; /* xferlen for DCMD and non-mbox
602 u32 flags; /* data direction flags */
607 * I/O statistics for some applications like SNMP agent. The caller must
608 * provide the number of logical drives for which status should be reported.
611 int num_ldrv; /* Number for logical drives for which the
612 status should be reported. */
613 u32 nreads[MAX_LOGICAL_DRIVES_40LD]; /* number of reads for
614 each logical drive */
615 u32 nreadblocks[MAX_LOGICAL_DRIVES_40LD]; /* number of blocks
616 read for each logical
618 u32 nwrites[MAX_LOGICAL_DRIVES_40LD]; /* number of writes
621 u32 nwriteblocks[MAX_LOGICAL_DRIVES_40LD]; /* number of blocks
624 u32 rd_errors[MAX_LOGICAL_DRIVES_40LD]; /* number of read
627 u32 wr_errors[MAX_LOGICAL_DRIVES_40LD]; /* number of write
633 struct private_bios_data {
635 * bits 0-3 - BIOS geometry
639 * Others values are invalid
641 u8 unused:4; /* bits 4-7 are unused */
643 * logical drive set as boot drive
644 * 0..7 - for 8LD cards
645 * 0..39 - for 40LD cards
648 u16 cksum; /* 0-(sum of first 13 bytes of this structure) */
649 } __attribute__ ((packed));
655 * Mailbox and firmware commands and subopcodes used in this driver.
658 #define MEGA_MBOXCMD_LREAD 0x01
659 #define MEGA_MBOXCMD_LWRITE 0x02
660 #define MEGA_MBOXCMD_PASSTHRU 0x03
661 #define MEGA_MBOXCMD_ADPEXTINQ 0x04
662 #define MEGA_MBOXCMD_ADAPTERINQ 0x05
663 #define MEGA_MBOXCMD_LREAD64 0xA7
664 #define MEGA_MBOXCMD_LWRITE64 0xA8
665 #define MEGA_MBOXCMD_PASSTHRU64 0xC3
666 #define MEGA_MBOXCMD_EXTPTHRU 0xE3
668 #define MAIN_MISC_OPCODE 0xA4 /* f/w misc opcode */
669 #define GET_MAX_SG_SUPPORT 0x01 /* get max sg len supported by f/w */
671 #define FC_NEW_CONFIG 0xA1
672 #define NC_SUBOP_PRODUCT_INFO 0x0E
673 #define NC_SUBOP_ENQUIRY3 0x0F
674 #define ENQ3_GET_SOLICITED_FULL 0x02
675 #define OP_DCMD_READ_CONFIG 0x04
676 #define NEW_READ_CONFIG_8LD 0x67
677 #define READ_CONFIG_8LD 0x07
678 #define FLUSH_ADAPTER 0x0A
679 #define FLUSH_SYSTEM 0xFE
682 * Command for random deletion of logical drives
684 #define FC_DEL_LOGDRV 0xA4 /* f/w command */
685 #define OP_SUP_DEL_LOGDRV 0x2A /* is feature supported */
686 #define OP_GET_LDID_MAP 0x18 /* get ldid and logdrv number map */
687 #define OP_DEL_LOGDRV 0x1C /* delete logical drive */
692 #define IS_BIOS_ENABLED 0x62
693 #define GET_BIOS 0x01
694 #define CHNL_CLASS 0xA9
695 #define GET_CHNL_CLASS 0x00
696 #define SET_CHNL_CLASS 0x01
699 #define BIOS_PVT_DATA 0x40
700 #define GET_BIOS_PVT_DATA 0x00
704 * Commands to support clustering
706 #define MEGA_GET_TARGET_ID 0x7D
707 #define MEGA_CLUSTER_OP 0x70
708 #define MEGA_GET_CLUSTER_MODE 0x02
709 #define MEGA_CLUSTER_CMD 0x6E
710 #define MEGA_RESERVE_LD 0x01
711 #define MEGA_RELEASE_LD 0x02
712 #define MEGA_RESET_RESERVATIONS 0x03
713 #define MEGA_RESERVATION_STATUS 0x04
714 #define MEGA_RESERVE_PD 0x05
715 #define MEGA_RELEASE_PD 0x06
719 * Module battery status
721 #define MEGA_BATT_MODULE_MISSING 0x01
722 #define MEGA_BATT_LOW_VOLTAGE 0x02
723 #define MEGA_BATT_TEMP_HIGH 0x04
724 #define MEGA_BATT_PACK_MISSING 0x08
725 #define MEGA_BATT_CHARGE_MASK 0x30
726 #define MEGA_BATT_CHARGE_DONE 0x00
727 #define MEGA_BATT_CHARGE_INPROG 0x10
728 #define MEGA_BATT_CHARGE_FAIL 0x20
729 #define MEGA_BATT_CYCLES_EXCEEDED 0x40
732 * Physical drive states.
735 #define PDRV_ONLINE 3
736 #define PDRV_FAILED 4
738 #define PDRV_HOTSPARE 6
742 * Raid logical drive states.
744 #define RDRV_OFFLINE 0
745 #define RDRV_DEGRADED 1
746 #define RDRV_OPTIMAL 2
747 #define RDRV_DELETED 3
750 * Read, write and cache policies
752 #define NO_READ_AHEAD 0
754 #define ADAP_READ_AHEAD 2
755 #define WRMODE_WRITE_THRU 0
756 #define WRMODE_WRITE_BACK 1
760 struct megaraid_cmd_priv {
761 struct list_head entry;
764 #define SCSI_LIST(scp) \
765 (&((struct megaraid_cmd_priv *)scsi_cmd_priv(scp))->entry)
767 struct scsi_cmd_and_priv {
768 struct scsi_cmnd cmd;
769 struct megaraid_cmd_priv priv;
772 static inline struct scsi_cmnd *
773 megaraid_to_scsi_cmd(struct megaraid_cmd_priv *cmd_priv)
775 /* See also scsi_mq_setup_tags() */
776 BUILD_BUG_ON(sizeof(struct scsi_cmd_and_priv) !=
777 sizeof(struct scsi_cmnd) +
778 sizeof(struct megaraid_cmd_priv));
780 return &container_of(cmd_priv, struct scsi_cmd_and_priv, priv)->cmd;
784 * Each controller's soft state
787 int this_id; /* our id, may set to different than 7 if
788 clustering is available */
792 void __iomem *mmio_base;
794 /* mbox64 with mbox not aligned on 16-byte boundary */
795 mbox64_t *una_mbox64;
796 dma_addr_t una_mbox64_dma;
798 volatile mbox64_t *mbox64;/* ptr to 64-bit mailbox */
799 volatile mbox_t *mbox; /* ptr to standard mailbox */
804 struct list_head free_list;
805 struct list_head pending_list;
806 struct list_head completed_list;
808 struct Scsi_Host *host;
810 #define MEGA_BUFFER_SIZE (2*1024)
812 dma_addr_t buf_dma_handle;
814 mega_product_info product_info;
819 atomic_t pend_cmds; /* maintain a counter for pending
820 commands in firmware */
823 u32 nreads[MAX_LOGICAL_DRIVES_40LD];
824 u32 nreadblocks[MAX_LOGICAL_DRIVES_40LD];
825 u32 nwrites[MAX_LOGICAL_DRIVES_40LD];
826 u32 nwriteblocks[MAX_LOGICAL_DRIVES_40LD];
827 u32 rd_errors[MAX_LOGICAL_DRIVES_40LD];
828 u32 wr_errors[MAX_LOGICAL_DRIVES_40LD];
831 /* Host adapter parameters */
836 #ifdef CONFIG_PROC_FS
837 struct proc_dir_entry *controller_proc_dir_entry;
840 int has_64bit_addr; /* are we using 64-bit addressing */
842 int boot_ldrv_enabled;
844 int boot_pdrv_enabled; /* boot from physical drive */
845 int boot_pdrv_ch; /* boot physical drive channel */
846 int boot_pdrv_tgt; /* boot physical drive target */
849 int support_random_del; /* Do we support random deletion of
851 int read_ldidmap; /* set after logical drive deltion. The
852 logical drive number must be read from the
854 atomic_t quiescent; /* a stage reached when delete logical
855 drive needs to be done. Stop
856 sending requests to the hba till
857 delete operation is completed */
860 u8 logdrv_chan[MAX_CHANNELS+NVIRT_CHAN]; /* logical drive are on
864 u8 sglen; /* f/w supported scatter-gather list length */
867 struct mutex int_mtx; /* To synchronize the internal
869 int int_status; /* status of internal cmd */
870 struct completion int_waitq; /* wait queue for internal
873 int has_cluster; /* cluster support on this HBA */
879 adapter_t *hostdata_addr;
884 * For state flag. Do not use LSB(8 bits) which are
885 * reserved for storing info about channels.
887 #define IN_ABORT 0x80000000L
888 #define IN_RESET 0x40000000L
889 #define BOARD_MEMMAP 0x20000000L
890 #define BOARD_IOMAP 0x10000000L
891 #define BOARD_40LD 0x08000000L
892 #define BOARD_64BIT 0x04000000L
894 #define INTR_VALID 0x40
896 #define PCI_CONF_AMISIG 0xa0
897 #define PCI_CONF_AMISIG64 0xa4
900 #define MEGA_DMA_TYPE_NONE 0xFFFF
901 #define MEGA_BULK_DATA 0x0001
902 #define MEGA_SGLIST 0x0002
905 * Parameters for the io-mapped controllers
908 /* I/O Port offsets */
909 #define CMD_PORT 0x00
910 #define ACK_PORT 0x00
911 #define TOGGLE_PORT 0x01
912 #define INTR_PORT 0x0a
914 #define MBOX_BUSY_PORT 0x00
915 #define MBOX_PORT0 0x04
916 #define MBOX_PORT1 0x05
917 #define MBOX_PORT2 0x06
918 #define MBOX_PORT3 0x07
919 #define ENABLE_MBOX_REGION 0x0B
921 /* I/O Port Values */
922 #define ISSUE_BYTE 0x10
923 #define ACK_BYTE 0x08
924 #define ENABLE_INTR_BYTE 0xc0
925 #define DISABLE_INTR_BYTE 0x00
926 #define VALID_INTR_BYTE 0x40
927 #define MBOX_BUSY_BYTE 0x10
928 #define ENABLE_MBOX_BYTE 0x00
931 /* Setup some port macros here */
932 #define issue_command(adapter) \
933 outb_p(ISSUE_BYTE, (adapter)->base + CMD_PORT)
935 #define irq_state(adapter) inb_p((adapter)->base + INTR_PORT)
937 #define set_irq_state(adapter, value) \
938 outb_p((value), (adapter)->base + INTR_PORT)
940 #define irq_ack(adapter) \
941 outb_p(ACK_BYTE, (adapter)->base + ACK_PORT)
943 #define irq_enable(adapter) \
944 outb_p(ENABLE_INTR_BYTE, (adapter)->base + TOGGLE_PORT)
946 #define irq_disable(adapter) \
947 outb_p(DISABLE_INTR_BYTE, (adapter)->base + TOGGLE_PORT)
951 * This is our SYSDEP area. All kernel specific detail should be placed here -
952 * as much as possible
959 const char *megaraid_info (struct Scsi_Host *);
961 static int mega_query_adapter(adapter_t *);
962 static int issue_scb(adapter_t *, scb_t *);
963 static int mega_setup_mailbox(adapter_t *);
965 static int megaraid_queue (struct Scsi_Host *, struct scsi_cmnd *);
966 static scb_t * mega_build_cmd(adapter_t *, struct scsi_cmnd *, int *);
967 static void __mega_runpendq(adapter_t *);
968 static int issue_scb_block(adapter_t *, u_char *);
970 static irqreturn_t megaraid_isr_memmapped(int, void *);
971 static irqreturn_t megaraid_isr_iomapped(int, void *);
973 static void mega_free_scb(adapter_t *, scb_t *);
975 static int megaraid_abort(struct scsi_cmnd *);
976 static int megaraid_reset(struct scsi_cmnd *);
977 static int megaraid_abort_and_reset(adapter_t *, struct scsi_cmnd *, int);
978 static int megaraid_biosparam(struct scsi_device *, struct block_device *,
981 static int mega_build_sglist (adapter_t *adapter, scb_t *scb,
982 u32 *buffer, u32 *length);
983 static int __mega_busywait_mbox (adapter_t *);
984 static void mega_rundoneq (adapter_t *);
985 static void mega_cmd_done(adapter_t *, u8 [], int, int);
986 static inline void mega_free_sgl (adapter_t *adapter);
987 static void mega_8_to_40ld (mraid_inquiry *inquiry,
988 mega_inquiry3 *enquiry3, mega_product_info *);
990 static int megadev_open (struct inode *, struct file *);
991 static int megadev_ioctl (struct file *, unsigned int, unsigned long);
992 static int mega_m_to_n(void __user *, nitioctl_t *);
993 static int mega_n_to_m(void __user *, megacmd_t *);
995 static int mega_init_scb (adapter_t *);
997 static int mega_is_bios_enabled (adapter_t *);
999 #ifdef CONFIG_PROC_FS
1000 static void mega_create_proc_entry(int, struct proc_dir_entry *);
1001 static int mega_adapinq(adapter_t *, dma_addr_t);
1002 static int mega_internal_dev_inquiry(adapter_t *, u8, u8, dma_addr_t);
1005 static int mega_support_ext_cdb(adapter_t *);
1006 static mega_passthru* mega_prepare_passthru(adapter_t *, scb_t *,
1007 struct scsi_cmnd *, int, int);
1008 static mega_ext_passthru* mega_prepare_extpassthru(adapter_t *,
1009 scb_t *, struct scsi_cmnd *, int, int);
1010 static void mega_enum_raid_scsi(adapter_t *);
1011 static void mega_get_boot_drv(adapter_t *);
1012 static int mega_support_random_del(adapter_t *);
1013 static int mega_del_logdrv(adapter_t *, int);
1014 static int mega_do_del_logdrv(adapter_t *, int);
1015 static void mega_get_max_sgl(adapter_t *);
1016 static int mega_internal_command(adapter_t *, megacmd_t *, mega_passthru *);
1017 static int mega_support_cluster(adapter_t *);
1020 /* vi: set ts=8 sw=8 tw=78: */