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freebsd-nq/sys/dev/aic7xxx/aic79xx.h
Justin T. Gibbs cdd49e97b4 Hook up the ahd driver.
2002-06-06 16:35:58 +00:00

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/*
* Core definitions and data structures shareable across OS platforms.
*
* Copyright (c) 1994-2001 Justin T. Gibbs.
* Copyright (c) 2000-2001 Adaptec Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* $Id: //depot/aic7xxx/aic7xxx/aic79xx.h#47 $
*
* $FreeBSD$
*/
#ifndef _AIC79XX_H_
#define _AIC79XX_H_
/* Register Definitions */
#include "aic79xx_reg.h"
/************************* Forward Declarations *******************************/
struct ahd_platform_data;
struct scb_platform_data;
/****************************** Useful Macros *********************************/
#ifndef MAX
#define MAX(a,b) (((a) > (b)) ? (a) : (b))
#endif
#ifndef MIN
#define MIN(a,b) (((a) < (b)) ? (a) : (b))
#endif
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
#define NUM_ELEMENTS(array) (sizeof(array) / sizeof(*array))
#define ALL_CHANNELS '\0'
#define ALL_TARGETS_MASK 0xFFFF
#define INITIATOR_WILDCARD (~0)
#define SCB_LIST_NULL 0xFF00
#define SCB_LIST_NULL_LE (ahd_htole16(SCB_LIST_NULL))
#define SCBID_IS_NULL(scbid) (((scbid) & 0xFF00 ) == SCB_LIST_NULL)
#define SCSIID_TARGET(ahd, scsiid) \
(((scsiid) & TID) >> TID_SHIFT)
#define SCSIID_OUR_ID(scsiid) \
((scsiid) & OID)
#define SCSIID_CHANNEL(ahd, scsiid) ('A')
#define SCB_IS_SCSIBUS_B(ahd, scb) (0)
#define SCB_GET_OUR_ID(scb) \
SCSIID_OUR_ID((scb)->hscb->scsiid)
#define SCB_GET_TARGET(ahd, scb) \
SCSIID_TARGET((ahd), (scb)->hscb->scsiid)
#define SCB_GET_CHANNEL(ahd, scb) \
SCSIID_CHANNEL(ahd, (scb)->hscb->scsiid)
#define SCB_GET_LUN(scb) \
((scb)->hscb->lun)
#define SCB_GET_TARGET_OFFSET(ahd, scb) \
SCB_GET_TARGET(ahd, scb)
#define SCB_GET_TARGET_MASK(ahd, scb) \
(0x01 << (SCB_GET_TARGET_OFFSET(ahd, scb)))
/*
* TCLs have the following format: TTTTLLLLLLLL
*/
#define TCL_TARGET_OFFSET(tcl) \
((((tcl) >> 4) & TID) >> 4)
#define TCL_LUN(tcl) \
(tcl & (AHD_NUM_LUNS_NONPKT - 1))
#define BUILD_TCL(scsiid, lun) \
((lun) | (((scsiid) & TID) << 4))
#define BUILD_TCL_RAW(target, channel, lun) \
((lun) | ((target) << 8))
#define SCB_GET_TAG(scb) \
ahd_le16toh(scb->hscb->tag)
#ifndef AHD_TARGET_MODE
#undef AHD_TMODE_ENABLE
#define AHD_TMODE_ENABLE 0
#endif
/**************************** Driver Constants ********************************/
/*
* The maximum number of supported targets.
*/
#define AHD_NUM_TARGETS 16
/*
* The maximum number of supported luns.
* The identify message only supports 64 luns in non-packetized transfers.
* You can have 2^64 luns when information unit transfers are enabled,
* but until we see a need to support that many, we support 256.
*/
#define AHD_NUM_LUNS_NONPKT 64
#define AHD_NUM_LUNS 256
/*
* The maximum transfer per S/G segment.
*/
#define AHD_MAXTRANSFER_SIZE 0x00ffffff /* limited by 24bit counter */
/*
* The maximum amount of SCB storage in hardware on a controller.
* This value represents an upper bound. Due to software design,
* we may not be able to use this number.
*/
#define AHD_SCB_MAX 512
/*
* The maximum number of concurrent transactions supported per driver instance.
* Sequencer Control Blocks (SCBs) store per-transaction information.
* We are limited to 510 because:
* 1) SCB storage space holds us to at most 512.
* 2) Our input queue scheme requires one SCB to always be reserved
* in advance of queuing any SCBs. This takes us down to 511.
* 3) To handle our output queue correctly on machines that only
* support 32bit stores, we must clear the array 4 bytes at a
* time. To avoid colliding with a DMA write from the sequencer,
* we must be sure that 2, 16bit slots are empty when we write to
* clear the queue. This restricts us to only 511 SCBs: 1 that
* just completed and the known additional empty slot in the queue
* that precedes it.
#define AHD_MAX_QUEUE 510
*/
#define AHD_MAX_QUEUE 255
/*
* Define the size of our QIN and QOUT FIFOs. They must be a power of 2
* in size and accomodate as many transactions as can be queued concurrently.
*/
#define AHD_QIN_SIZE 512
#define AHD_QOUT_SIZE 512
#define AHD_QIN_WRAP(x) ((x) & (AHD_QIN_SIZE-1))
#define AHD_QOUT_WRAP(x) ((x) & (AHD_QOUT_SIZE-1))
/*
* The maximum amount of SCB storage we allocate in host memory. This
* number should reflect the 1 additional SCB we require to handle our
* qinfifo mechanism.
*/
#define AHD_SCB_MAX_ALLOC (AHD_MAX_QUEUE+1)
/*
* Ring Buffer of incoming target commands.
* We allocate 256 to simplify the logic in the sequencer
* by using the natural wrap point of an 8bit counter.
*/
#define AHD_TMODE_CMDS 256
/* Reset line assertion time in us */
#define AHD_BUSRESET_DELAY 250
/******************* Chip Characteristics/Operating Settings *****************/
/*
* Chip Type
* The chip order is from least sophisticated to most sophisticated.
*/
typedef enum {
AHD_NONE = 0x0000,
AHD_CHIPID_MASK = 0x00FF,
AHD_AIC7901 = 0x0001,
AHD_AIC7902 = 0x0002,
AHD_PCI = 0x0100, /* Bus type PCI */
AHD_PCIX = 0x0200, /* Bus type PCIX */
AHD_BUS_MASK = 0x0F00
} ahd_chip;
/*
* Features available in each chip type.
*/
typedef enum {
AHD_FENONE = 0x00000,
AHD_WIDE = 0x00001, /* Wide Channel */
AHD_MULTI_FUNC = 0x00100, /* Multi-Function Twin Channel Device */
AHD_TARGETMODE = 0x01000, /* Has tested target mode support */
AHD_MULTIROLE = 0x02000, /* Space for two roles at a time */
AHD_REMOVABLE = 0x00000, /* Hot-Swap supported - None so far*/
AHD_AIC7901_FE = AHD_FENONE,
AHD_AIC7902_FE = AHD_MULTI_FUNC
} ahd_feature;
/*
* Bugs in the silicon that we work around in software.
*/
typedef enum {
AHD_BUGNONE = 0x0000,
AHD_SENT_SCB_UPDATE_BUG = 0x0001,
AHD_ABORT_LQI_BUG = 0x0002,
AHD_PKT_BITBUCKET_BUG = 0x0004,
AHD_LONG_SETIMO_BUG = 0x0008,
AHD_NLQICRC_DELAYED_BUG = 0x0010,
AHD_SCSIRST_BUG = 0x0020,
AHD_PCIX_ARBITER_BUG = 0x0040,
AHD_PCIX_SPLIT_BUG = 0x0080,
AHD_PCIX_CHIPRST_BUG = 0x0100,
AHD_PCIX_MMAPIO_BUG = 0x0200,
/* Bug workarounds that can be disabled on non-PCIX busses. */
AHD_PCIX_BUG_MASK = AHD_PCIX_ARBITER_BUG
| AHD_PCIX_SPLIT_BUG
| AHD_PCIX_CHIPRST_BUG
| AHD_PCIX_MMAPIO_BUG,
AHD_LQO_ATNO_BUG = 0x0400,
AHD_AUTOFLUSH_BUG = 0x0800,
AHD_CLRLQO_AUTOCLR_BUG = 0x1000,
AHD_PKTIZED_STATUS_BUG = 0x2000
} ahd_bug;
/*
* Configuration specific settings.
* The driver determines these settings by probing the
* chip/controller's configuration.
*/
typedef enum {
AHD_FNONE = 0x00000,
AHD_PRIMARY_CHANNEL = 0x00003,/*
* The channel that should
* be probed first.
*/
AHD_USEDEFAULTS = 0x00004,/*
* For cards without an seeprom
* or a BIOS to initialize the chip's
* SRAM, we use the default target
* settings.
*/
AHD_SEQUENCER_DEBUG = 0x00008,
AHD_RESET_BUS_A = 0x00010,
AHD_EXTENDED_TRANS_A = 0x00020,
AHD_TERM_ENB_A = 0x00040,
AHD_SPCHK_ENB_A = 0x00080,
AHD_STPWLEVEL_A = 0x00100,
AHD_INITIATORROLE = 0x00200,/*
* Allow initiator operations on
* this controller.
*/
AHD_TARGETROLE = 0x00400,/*
* Allow target operations on this
* controller.
*/
AHD_RESOURCE_SHORTAGE = 0x00800,
AHD_TQINFIFO_BLOCKED = 0x01000,/* Blocked waiting for ATIOs */
AHD_INT50_SPEEDFLEX = 0x02000,/*
* Internal 50pin connector
* sits behind an aic3860
*/
AHD_BIOS_ENABLED = 0x04000,
AHD_ALL_INTERRUPTS = 0x08000,
AHD_39BIT_ADDRESSING = 0x10000,/* Use 39 bit addressing scheme. */
AHD_64BIT_ADDRESSING = 0x20000,/* Use 64 bit addressing scheme. */
AHD_CURRENT_SENSING = 0x40000,
AHD_SCB_CONFIG_USED = 0x80000,/* No SEEPROM but SCB had info. */
AHD_CPQ_BOARD = 0x100000
} ahd_flag;
/************************* Hardware SCB Definition ***************************/
/*
* The driver keeps up to MAX_SCB scb structures per card in memory. The SCB
* consists of a "hardware SCB" mirroring the fields availible on the card
* and additional information the kernel stores for each transaction.
*
* To minimize space utilization, a portion of the hardware scb stores
* different data during different portions of a SCSI transaction.
* As initialized by the host driver for the initiator role, this area
* contains the SCSI cdb (or a pointer to the cdb) to be executed. After
* the cdb has been presented to the target, this area serves to store
* residual transfer information and the SCSI status byte.
* For the target role, the contents of this area do not change, but
* still serve a different purpose than for the initiator role. See
* struct target_data for details.
*/
/*
* Status information embedded in the shared poriton of
* an SCB after passing the cdb to the target. The kernel
* driver will only read this data for transactions that
* complete abnormally.
*/
struct initiator_status {
uint32_t residual_datacnt; /* Residual in the current S/G seg */
uint32_t residual_sgptr; /* The next S/G for this transfer */
uint8_t scsi_status; /* Standard SCSI status byte */
};
struct target_status {
uint32_t residual_datacnt; /* Residual in the current S/G seg */
uint32_t residual_sgptr; /* The next S/G for this transfer */
uint8_t scsi_status; /* SCSI status to give to initiator */
uint8_t target_phases; /* Bitmap of phases to execute */
uint8_t data_phase; /* Data-In or Data-Out */
uint8_t initiator_tag; /* Initiator's transaction tag */
};
/*
* Initiator mode SCB shared data area.
* If the embedded CDB is 12 bytes or less, we embed
* the sense buffer address in the SCB. This allows
* us to retrieve sense information without interupting
* the host in packetized mode.
*/
typedef uint32_t sense_addr_t;
#define MAX_CDB_LEN 16
#define MAX_CDB_LEN_WITH_SENSE_ADDR (MAX_CDB_LEN - sizeof(sense_addr_t))
union initiator_data {
uint64_t cdbptr;
uint8_t cdb[MAX_CDB_LEN];
struct {
uint8_t cdb[MAX_CDB_LEN_WITH_SENSE_ADDR];
sense_addr_t sense_addr;
} cdb_plus_saddr;
};
/*
* Target mode version of the shared data SCB segment.
*/
struct target_data {
uint32_t spare[2];
uint8_t scsi_status; /* SCSI status to give to initiator */
uint8_t target_phases; /* Bitmap of phases to execute */
uint8_t data_phase; /* Data-In or Data-Out */
uint8_t initiator_tag; /* Initiator's transaction tag */
};
struct hardware_scb {
/*0*/ union {
union initiator_data idata;
struct target_data tdata;
struct initiator_status istatus;
struct target_status tstatus;
} shared_data;
/*
* A word about residuals.
* The scb is presented to the sequencer with the dataptr and datacnt
* fields initialized to the contents of the first S/G element to
* transfer. The sgptr field is initialized to the bus address for
* the S/G element that follows the first in the in core S/G array
* or'ed with the SG_FULL_RESID flag. Sgptr may point to an invalid
* S/G entry for this transfer (single S/G element transfer with the
* first elements address and length preloaded in the dataptr/datacnt
* fields). If no transfer is to occur, sgptr is set to SG_LIST_NULL.
* The SG_FULL_RESID flag ensures that the residual will be correctly
* noted even if no data transfers occur. Once the data phase is entered,
* the residual sgptr and datacnt are loaded from the sgptr and the
* datacnt fields. After each S/G element's dataptr and length are
* loaded into the hardware, the residual sgptr is advanced. After
* each S/G element is expired, its datacnt field is checked to see
* if the LAST_SEG flag is set. If so, SG_LIST_NULL is set in the
* residual sg ptr and the transfer is considered complete. If the
* sequencer determines that there is a residual in the tranfer, or
* there is non-zero status, it will set the SG_STATUS_VALID flag in
* sgptr and dma the scb back into host memory. To sumarize:
*
* Sequencer:
* o A residual has occurred if SG_FULL_RESID is set in sgptr,
* or residual_sgptr does not have SG_LIST_NULL set.
*
* o We are transfering the last segment if residual_datacnt has
* the SG_LAST_SEG flag set.
*
* Host:
* o A residual can only have occurred if a completed scb has the
* SG_STATUS_VALID flag set. Inspection of the SCSI status field,
* the residual_datacnt, and the residual_sgptr field will tell
* for sure.
*
* o residual_sgptr and sgptr refer to the "next" sg entry
* and so may point beyond the last valid sg entry for the
* transfer.
*/
#define SG_PTR_MASK 0xFFFFFFF8
/*16*/ uint8_t cdb_len;
/*17*/ uint8_t task_management;
/*18*/ uint16_t tag;
/*20*/ uint32_t next_hscb_busaddr;
/*24*/ uint64_t dataptr;
/*32*/ uint32_t datacnt; /* Byte 3 is spare. */
/*36*/ uint32_t sgptr;
/*40*/ uint8_t control; /* See SCB_CONTROL in aic79xx.reg for details */
/*41*/ uint8_t scsiid; /*
* Selection out Id
* Our Id (bits 0-3) Their ID (bits 4-7)
*/
/*42*/ uint8_t lun;
/*43*/ uint8_t task_attribute_nonpkt_tag;
/*44*/ uint32_t hscb_busaddr;
/******* Fields below are not Downloaded (Sequencer may use for scratch) ******/
/*48*/ uint8_t spare[16];
};
/************************ Kernel SCB Definitions ******************************/
/*
* Some fields of the SCB are OS dependent. Here we collect the
* definitions for elements that all OS platforms need to include
* in there SCB definition.
*/
/*
* Definition of a scatter/gather element as transfered to the controller.
* The aic7xxx chips only support a 24bit length. We use the top byte of
* the length to store additional address bits and a flag to indicate
* that a given segment terminates the transfer. This gives us an
* addressable range of 512GB on machines with 64bit PCI or with chips
* that can support dual address cycles on 32bit PCI busses.
*/
struct ahd_dma_seg {
uint32_t addr;
uint32_t len;
#define AHD_DMA_LAST_SEG 0x80000000
#define AHD_SG_HIGH_ADDR_MASK 0x7F000000
#define AHD_SG_LEN_MASK 0x00FFFFFF
};
struct ahd_dma64_seg {
uint64_t addr;
uint32_t len;
uint32_t pad;
};
struct map_node {
bus_dmamap_t dmamap;
bus_addr_t physaddr;
uint8_t *vaddr;
SLIST_ENTRY(map_node) links;
};
/*
* The current state of this SCB.
*/
typedef enum {
SCB_FREE = 0x0000,
SCB_TRANSMISSION_ERROR = 0x0001,/*
* We detected a parity or CRC
* error that has effected the
* payload of the command. This
* flag is checked when normal
* status is returned to catch
* the case of a target not
* responding to our attempt
* to report the error.
*/
SCB_OTHERTCL_TIMEOUT = 0x0002,/*
* Another device was active
* during the first timeout for
* this SCB so we gave ourselves
* an additional timeout period
* in case it was hogging the
* bus.
*/
SCB_DEVICE_RESET = 0x0004,
SCB_SENSE = 0x0008,
SCB_CDB32_PTR = 0x0010,
SCB_RECOVERY_SCB = 0x0020,
SCB_AUTO_NEGOTIATE = 0x0040,/* Negotiate to achieve goal. */
SCB_NEGOTIATE = 0x0080,/* Negotiation forced for command. */
SCB_ABORT = 0x0100,
SCB_UNTAGGEDQ = 0x0200,
SCB_ACTIVE = 0x0400,
SCB_TARGET_IMMEDIATE = 0x0800,
SCB_PACKETIZED = 0x1000,
SCB_EXPECT_PPR_BUSFREE = 0x2000,
SCB_PKT_SENSE = 0x4000,
SCB_CMDPHASE_ABORT = 0x8000
} scb_flag;
struct scb {
struct hardware_scb *hscb;
union {
SLIST_ENTRY(scb) sle;
TAILQ_ENTRY(scb) tqe;
} links;
LIST_ENTRY(scb) pending_links;
ahd_io_ctx_t io_ctx;
struct ahd_softc *ahd_softc;
scb_flag flags;
#ifndef __linux__
bus_dmamap_t dmamap;
#endif
struct scb_platform_data *platform_data;
struct map_node *hscb_map;
struct map_node *sg_map;
struct map_node *sense_map;
void *sg_list;
uint8_t *sense_data;
bus_addr_t sg_list_busaddr;
bus_addr_t sense_busaddr;
u_int sg_count;/* How full ahd_dma_seg is */
};
struct scb_data {
SLIST_HEAD(, scb) free_scbs; /*
* Pool of SCBs ready to be assigned
* commands to execute.
*/
struct scb *scbindex[AHD_SCB_MAX];
/*
* Mapping from tag to SCB.
*/
/*
* "Bus" addresses of our data structures.
*/
bus_dma_tag_t hscb_dmat; /* dmat for our hardware SCB array */
bus_dma_tag_t sg_dmat; /* dmat for our sg segments */
bus_dma_tag_t sense_dmat; /* dmat for our sense buffers */
SLIST_HEAD(, map_node) hscb_maps;
SLIST_HEAD(, map_node) sg_maps;
SLIST_HEAD(, map_node) sense_maps;
int scbs_left; /* unallocated scbs in head map_node */
int sgs_left; /* unallocated sgs in head map_node */
int sense_left; /* unallocated sense in head map_node */
uint16_t numscbs;
uint16_t maxhscbs; /* Number of SCBs on the card */
uint8_t init_level; /*
* How far we've initialized
* this structure.
*/
};
/************************ Target Mode Definitions *****************************/
/*
* Connection desciptor for select-in requests in target mode.
*/
struct target_cmd {
uint8_t scsiid; /* Our ID and the initiator's ID */
uint8_t identify; /* Identify message */
uint8_t bytes[22]; /*
* Bytes contains any additional message
* bytes terminated by 0xFF. The remainder
* is the cdb to execute.
*/
uint8_t cmd_valid; /*
* When a command is complete, the firmware
* will set cmd_valid to all bits set.
* After the host has seen the command,
* the bits are cleared. This allows us
* to just peek at host memory to determine
* if more work is complete. cmd_valid is on
* an 8 byte boundary to simplify setting
* it on aic7880 hardware which only has
* limited direct access to the DMA FIFO.
*/
uint8_t pad[7];
};
/*
* Number of events we can buffer up if we run out
* of immediate notify ccbs.
*/
#define AHD_TMODE_EVENT_BUFFER_SIZE 8
struct ahd_tmode_event {
uint8_t initiator_id;
uint8_t event_type; /* MSG type or EVENT_TYPE_BUS_RESET */
#define EVENT_TYPE_BUS_RESET 0xFF
uint8_t event_arg;
};
/*
* Per enabled lun target mode state.
* As this state is directly influenced by the host OS'es target mode
* environment, we let the OS module define it. Forward declare the
* structure here so we can store arrays of them, etc. in OS neutral
* data structures.
*/
#ifdef AHD_TARGET_MODE
struct ahd_tmode_lstate {
struct cam_path *path;
struct ccb_hdr_slist accept_tios;
struct ccb_hdr_slist immed_notifies;
struct ahd_tmode_event event_buffer[AHD_TMODE_EVENT_BUFFER_SIZE];
uint8_t event_r_idx;
uint8_t event_w_idx;
};
#else
struct ahd_tmode_lstate;
#endif
/******************** Transfer Negotiation Datastructures *********************/
#define AHD_TRANS_CUR 0x01 /* Modify current neogtiation status */
#define AHD_TRANS_ACTIVE 0x03 /* Assume this target is on the bus */
#define AHD_TRANS_GOAL 0x04 /* Modify negotiation goal */
#define AHD_TRANS_USER 0x08 /* Modify user negotiation settings */
#define AHD_PERIOD_ASYNC 0xFF
#define AHD_PERIOD_10MHz 0x19
/*
* Transfer Negotiation Information.
*/
struct ahd_transinfo {
uint8_t protocol_version; /* SCSI Revision level */
uint8_t transport_version; /* SPI Revision level */
uint8_t width; /* Bus width */
uint8_t period; /* Sync rate factor */
uint8_t offset; /* Sync offset */
uint8_t ppr_options; /* Parallel Protocol Request options */
};
/*
* Per-initiator current, goal and user transfer negotiation information. */
struct ahd_initiator_tinfo {
struct ahd_transinfo curr;
struct ahd_transinfo goal;
struct ahd_transinfo user;
};
/*
* Per enabled target ID state.
* Pointers to lun target state as well as sync/wide negotiation information
* for each initiator<->target mapping. For the initiator role we pretend
* that we are the target and the targets are the initiators since the
* negotiation is the same regardless of role.
*/
struct ahd_tmode_tstate {
struct ahd_tmode_lstate* enabled_luns[AHD_NUM_LUNS];
struct ahd_initiator_tinfo transinfo[AHD_NUM_TARGETS];
/*
* Per initiator state bitmasks.
*/
uint16_t auto_negotiate;/* Auto Negotiation Required */
uint16_t discenable; /* Disconnection allowed */
uint16_t tagenable; /* Tagged Queuing allowed */
};
/*
* Points of interest along the negotiated transfer scale.
*/
#define AHD_SYNCRATE_MAX 0x8
#define AHD_SYNCRATE_160 0x8
#define AHD_SYNCRATE_PACED 0x8
#define AHD_SYNCRATE_DT 0x9
#define AHD_SYNCRATE_ULTRA2 0xa
#define AHD_SYNCRATE_ULTRA 0xc
#define AHD_SYNCRATE_FAST 0x19
#define AHD_SYNCRATE_MIN_DT AHD_SYNCRATE_FAST
#define AHD_SYNCRATE_SYNC 0x32
#define AHD_SYNCRATE_MIN 0x60
#define AHD_SYNCRATE_ASYNC 0xFF
/*
* In RevA, the synctable uses a 120MHz rate for the period
* factor 8 and 160MHz for the period factor 7. The 120MHz
* rate never made it into the official SCSI spec, so we must
* compensate when setting the negotiation table for Rev A
* parts.
*/
#define AHD_SYNCRATE_REVA_120 0x8
#define AHD_SYNCRATE_REVA_160 0x7
/***************************** Lookup Tables **********************************/
/*
* Phase -> name and message out response
* to parity errors in each phase table.
*/
struct ahd_phase_table_entry {
uint8_t phase;
uint8_t mesg_out; /* Message response to parity errors */
char *phasemsg;
};
/************************** Serial EEPROM Format ******************************/
struct seeprom_config {
/*
* Per SCSI ID Configuration Flags
*/
uint16_t device_flags[16]; /* words 0-15 */
#define CFXFER 0x003F /* synchronous transfer rate */
#define CFXFER_ASYNC 0x3F
#define CFQAS 0x0040 /* Negotiate QAS */
#define CFPACKETIZED 0x0080 /* Negotiate Packetized Transfers */
#define CFSTART 0x0100 /* send start unit SCSI command */
#define CFINCBIOS 0x0200 /* include in BIOS scan */
#define CFDISC 0x0400 /* enable disconnection */
#define CFMULTILUNDEV 0x0800 /* Probe multiple luns in BIOS scan */
#define CFWIDEB 0x1000 /* wide bus device */
#define CFHOSTMANAGED 0x8000 /* Managed by a RAID controller */
/*
* BIOS Control Bits
*/
uint16_t bios_control; /* word 16 */
#define CFSUPREM 0x0001 /* support all removeable drives */
#define CFSUPREMB 0x0002 /* support removeable boot drives */
#define CFBIOSSTATE 0x000C /* BIOS Action State */
#define CFBS_DISABLED 0x00
#define CFBS_ENABLED 0x04
#define CFBS_DISABLED_SCAN 0x08
#define CFENABLEDV 0x0010 /* Perform Domain Validation */
#define CFCTRL_A 0x0020 /* BIOS displays Ctrl-A message */
#define CFSPARITY 0x0040 /* SCSI parity */
#define CFEXTEND 0x0080 /* extended translation enabled */
#define CFBOOTCD 0x0100 /* Support Bootable CD-ROM */
#define CFMSG_LEVEL 0x0600 /* BIOS Message Level */
#define CFMSG_VERBOSE 0x0000
#define CFMSG_SILENT 0x0200
#define CFMSG_DIAG 0x0400
#define CFRESETB 0x0800 /* reset SCSI bus at boot */
/* UNUSED 0xf000 */
/*
* Host Adapter Control Bits
*/
uint16_t adapter_control; /* word 17 */
#define CFAUTOTERM 0x0001 /* Perform Auto termination */
#define CFSTERM 0x0002 /* SCSI low byte termination */
#define CFWSTERM 0x0004 /* SCSI high byte termination */
#define CFSEAUTOTERM 0x0008 /* Ultra2 Perform secondary Auto Term*/
#define CFSELOWTERM 0x0010 /* Ultra2 secondary low term */
#define CFSEHIGHTERM 0x0020 /* Ultra2 secondary high term */
#define CFSTPWLEVEL 0x0040 /* Termination level control */
#define CFBIOSAUTOTERM 0x0080 /* Perform Auto termination */
#define CFTERM_MENU 0x0100 /* BIOS displays termination menu */
#define CFCLUSTERENB 0x8000 /* Cluster Enable */
/*
* Bus Release Time, Host Adapter ID
*/
uint16_t brtime_id; /* word 18 */
#define CFSCSIID 0x000f /* host adapter SCSI ID */
/* UNUSED 0x00f0 */
#define CFBRTIME 0xff00 /* bus release time/PCI Latency Time */
/*
* Maximum targets
*/
uint16_t max_targets; /* word 19 */
#define CFMAXTARG 0x00ff /* maximum targets */
#define CFBOOTLUN 0x0f00 /* Lun to boot from */
#define CFBOOTID 0xf000 /* Target to boot from */
uint16_t res_1[10]; /* words 20-29 */
uint16_t signature; /* BIOS Signature */
#define CFSIGNATURE 0x400
uint16_t checksum; /* word 31 */
};
/****************************** Flexport Logic ********************************/
#define FLXADDR_TERMCTL 0x0
#define FLX_TERMCTL_ENSECHIGH 0x8
#define FLX_TERMCTL_ENSECLOW 0x4
#define FLX_TERMCTL_ENPRIHIGH 0x2
#define FLX_TERMCTL_ENPRILOW 0x1
#define FLXADDR_ROMSTAT_CURSENSECTL 0x1
#define FLX_ROMSTAT_SEECFG 0xF0
#define FLX_ROMSTAT_EECFG 0x0F
#define FLX_ROMSTAT_SEE_93C66 0x00
#define FLX_ROMSTAT_SEE_NONE 0xF0
#define FLX_ROMSTAT_EE_512x8 0x0
#define FLX_ROMSTAT_EE_1MBx8 0x1
#define FLX_ROMSTAT_EE_2MBx8 0x2
#define FLX_ROMSTAT_EE_4MBx8 0x3
#define FLX_ROMSTAT_EE_16MBx8 0x4
#define CURSENSE_ENB 0x1
#define FLXADDR_FLEXSTAT 0x2
#define FLX_FSTAT_BUSY 0x1
#define FLXADDR_CURRENT_STAT 0x4
#define FLX_CSTAT_SEC_HIGH 0xC0
#define FLX_CSTAT_SEC_LOW 0x30
#define FLX_CSTAT_PRI_HIGH 0x0C
#define FLX_CSTAT_PRI_LOW 0x03
#define FLX_CSTAT_MASK 0x03
#define FLX_CSTAT_SHIFT 2
#define FLX_CSTAT_OKAY 0x0
#define FLX_CSTAT_OVER 0x1
#define FLX_CSTAT_UNDER 0x2
#define FLX_CSTAT_INVALID 0x3
int ahd_read_seeprom(struct ahd_softc *ahd, uint16_t *buf,
u_int start_addr, u_int count);
int ahd_write_seeprom(struct ahd_softc *ahd, uint16_t *buf,
u_int start_addr, u_int count);
int ahd_wait_seeprom(struct ahd_softc *ahd);
int ahd_verify_cksum(struct seeprom_config *sc);
int ahd_acquire_seeprom(struct ahd_softc *ahd);
void ahd_release_seeprom(struct ahd_softc *ahd);
/**************************** Message Buffer *********************************/
typedef enum {
MSG_FLAG_NONE = 0x00,
MSG_FLAG_EXPECT_PPR_BUSFREE = 0x01,
MSG_FLAG_IU_REQ_CHANGED = 0x02,
MSG_FLAG_EXPECT_IDE_BUSFREE = 0x04,
MSG_FLAG_PACKETIZED = 0x08
} ahd_msg_flags;
typedef enum {
MSG_TYPE_NONE = 0x00,
MSG_TYPE_INITIATOR_MSGOUT = 0x01,
MSG_TYPE_INITIATOR_MSGIN = 0x02,
MSG_TYPE_TARGET_MSGOUT = 0x03,
MSG_TYPE_TARGET_MSGIN = 0x04
} ahd_msg_type;
typedef enum {
MSGLOOP_IN_PROG,
MSGLOOP_MSGCOMPLETE,
MSGLOOP_TERMINATED
} msg_loop_stat;
/*********************** Software Configuration Structure *********************/
TAILQ_HEAD(scb_tailq, scb);
struct ahd_suspend_channel_state {
uint8_t scsiseq;
uint8_t sxfrctl0;
uint8_t sxfrctl1;
uint8_t simode0;
uint8_t simode1;
uint8_t seltimer;
uint8_t seqctl;
};
struct ahd_suspend_state {
struct ahd_suspend_channel_state channel[2];
uint8_t optionmode;
uint8_t dscommand0;
uint8_t dspcistatus;
/* hsmailbox */
uint8_t crccontrol1;
uint8_t scbbaddr;
/* Host and sequencer SCB counts */
uint8_t dff_thrsh;
uint8_t *scratch_ram;
uint8_t *btt;
};
typedef void (*ahd_bus_intr_t)(struct ahd_softc *);
typedef enum {
AHD_MODE_DFF0,
AHD_MODE_DFF1,
AHD_MODE_CCHAN,
AHD_MODE_SCSI,
AHD_MODE_CFG,
AHD_MODE_UNKNOWN
} ahd_mode;
#define AHD_MK_MSK(x) (0x01 << (x))
#define AHD_MODE_DFF0_MSK AHD_MK_MSK(AHD_MODE_DFF0)
#define AHD_MODE_DFF1_MSK AHD_MK_MSK(AHD_MODE_DFF1)
#define AHD_MODE_CCHAN_MSK AHD_MK_MSK(AHD_MODE_CCHAN)
#define AHD_MODE_SCSI_MSK AHD_MK_MSK(AHD_MODE_SCSI)
#define AHD_MODE_CFG_MSK AHD_MK_MSK(AHD_MODE_CFG)
#define AHD_MODE_UNKNOWN_MSK AHD_MK_MSK(AHD_MODE_UNKNOWN)
#define AHD_MODE_ANY_MSK (~0)
typedef uint8_t ahd_mode_state;
typedef void ahd_callback_t (void *);
struct ahd_softc {
bus_space_tag_t tags[2];
bus_space_handle_t bshs[2];
#ifndef __linux__
bus_dma_tag_t buffer_dmat; /* dmat for buffer I/O */
#endif
struct scb_data scb_data;
struct scb *next_queued_scb;
/*
* SCBs that have been sent to the controller
*/
LIST_HEAD(, scb) pending_scbs;
/*
* Current register window mode information.
*/
ahd_mode dst_mode;
ahd_mode src_mode;
/*
* Saved register window mode information
* used for restore on next unpause.
*/
ahd_mode saved_dst_mode;
ahd_mode saved_src_mode;
/*
* Counting lock for deferring the release of additional
* untagged transactions from the untagged_queues. When
* the lock is decremented to 0, all queues in the
* untagged_queues array are run.
*/
u_int untagged_queue_lock;
/*
* Per-target queue of untagged-transactions. The
* transaction at the head of the queue is the
* currently pending untagged transaction for the
* target. The driver only allows a single untagged
* transaction per target.
*/
struct scb_tailq untagged_queues[AHD_NUM_TARGETS];
/*
* Platform specific data.
*/
struct ahd_platform_data *platform_data;
/*
* Platform specific device information.
*/
ahd_dev_softc_t dev_softc;
/*
* Bus specific device information.
*/
ahd_bus_intr_t bus_intr;
/*
* Target mode related state kept on a per enabled lun basis.
* Targets that are not enabled will have null entries.
* As an initiator, we keep one target entry for our initiator
* ID to store our sync/wide transfer settings.
*/
struct ahd_tmode_tstate *enabled_targets[AHD_NUM_TARGETS];
/*
* The black hole device responsible for handling requests for
* disabled luns on enabled targets.
*/
struct ahd_tmode_lstate *black_hole;
/*
* Device instance currently on the bus awaiting a continue TIO
* for a command that was not given the disconnect priveledge.
*/
struct ahd_tmode_lstate *pending_device;
/*
* Timer handles for timer driven callbacks.
*/
ahd_timer_t reset_timer;
/*
* Card characteristics
*/
ahd_chip chip;
ahd_feature features;
ahd_bug bugs;
ahd_flag flags;
struct seeprom_config *seep_config;
/* Values to store in the SEQCTL register for pause and unpause */
uint8_t unpause;
uint8_t pause;
/* Command Queues */
uint16_t qoutfifonext;
uint16_t qinfifonext;
uint16_t qinfifo[AHD_SCB_MAX];
uint16_t *qoutfifo;
/* Critical Section Data */
struct cs *critical_sections;
u_int num_critical_sections;
/* Buffer for handling packetized bitbucket. */
uint8_t *overrun_buf;
/* Links for chaining softcs */
TAILQ_ENTRY(ahd_softc) links;
/* Channel Names ('A', 'B', etc.) */
char channel;
/* Initiator Bus ID */
uint8_t our_id;
/*
* PCI error detection.
*/
int unsolicited_ints;
/*
* Target incoming command FIFO.
*/
struct target_cmd *targetcmds;
uint8_t tqinfifonext;
/*
* Incoming and outgoing message handling.
*/
uint8_t send_msg_perror;
ahd_msg_flags msg_flags;
ahd_msg_type msg_type;
uint8_t msgout_buf[12];/* Message we are sending */
uint8_t msgin_buf[12];/* Message we are receiving */
u_int msgout_len; /* Length of message to send */
u_int msgout_index; /* Current index in msgout */
u_int msgin_index; /* Current index in msgin */
/*
* Mapping information for data structures shared
* between the sequencer and kernel.
*/
bus_dma_tag_t parent_dmat;
bus_dma_tag_t shared_data_dmat;
bus_dmamap_t shared_data_dmamap;
bus_addr_t shared_data_busaddr;
/* Information saved through suspend/resume cycles */
struct ahd_suspend_state suspend_state;
/* Number of enabled target mode device on this card */
u_int enabled_luns;
/* Initialization level of this data structure */
u_int init_level;
/* PCI cacheline size. */
u_int pci_cachesize;
/* Per-Unit descriptive information */
const char *description;
const char *bus_description;
char *name;
int unit;
/* Selection Timer settings */
int seltime;
uint16_t user_discenable;/* Disconnection allowed */
uint16_t user_tagenable;/* Tagged Queuing allowed */
};
TAILQ_HEAD(ahd_softc_tailq, ahd_softc);
extern struct ahd_softc_tailq ahd_tailq;
/************************ Active Device Information ***************************/
typedef enum {
ROLE_UNKNOWN,
ROLE_INITIATOR,
ROLE_TARGET
} role_t;
struct ahd_devinfo {
int our_scsiid;
int target_offset;
uint16_t target_mask;
u_int target;
u_int lun;
char channel;
role_t role; /*
* Only guaranteed to be correct if not
* in the busfree state.
*/
};
/****************************** PCI Structures ********************************/
#define AHD_PCI_IOADDR0 PCIR_MAPS /* I/O BAR*/
#define AHD_PCI_MEMADDR (PCIR_MAPS + 4) /* Memory BAR */
#define AHD_PCI_IOADDR1 (PCIR_MAPS + 12)/* Second I/O BAR */
typedef int (ahd_device_setup_t)(struct ahd_softc *);
struct ahd_pci_identity {
uint64_t full_id;
uint64_t id_mask;
char *name;
ahd_device_setup_t *setup;
};
extern struct ahd_pci_identity ahd_pci_ident_table [];
extern const u_int ahd_num_pci_devs;
/***************************** VL/EISA Declarations ***************************/
struct aic7770_identity {
uint32_t full_id;
uint32_t id_mask;
char *name;
ahd_device_setup_t *setup;
};
extern struct aic7770_identity aic7770_ident_table [];
extern const int ahd_num_aic7770_devs;
#define AHD_EISA_SLOT_OFFSET 0xc00
#define AHD_EISA_IOSIZE 0x100
/*************************** Function Declarations ****************************/
/******************************************************************************/
u_int ahd_find_busy_tcl(struct ahd_softc *ahd, u_int tcl);
void ahd_set_disconnected_list(struct ahd_softc *ahd,
u_int target, u_int lun,
u_int scbid);
void ahd_busy_tcl(struct ahd_softc *ahd,
u_int tcl, u_int busyid);
static __inline void ahd_unbusy_tcl(struct ahd_softc *ahd, u_int tcl);
static __inline void
ahd_unbusy_tcl(struct ahd_softc *ahd, u_int tcl)
{
ahd_busy_tcl(ahd, tcl, SCB_LIST_NULL);
}
/***************************** PCI Front End *********************************/
struct ahd_pci_identity *ahd_find_pci_device(ahd_dev_softc_t);
int ahd_pci_config(struct ahd_softc *,
struct ahd_pci_identity *);
/*************************** EISA/VL Front End ********************************/
struct aic7770_identity *aic7770_find_device(uint32_t);
int aic7770_config(struct ahd_softc *ahd,
struct aic7770_identity *);
/************************** SCB and SCB queue management **********************/
int ahd_probe_scbs(struct ahd_softc *);
void ahd_run_untagged_queues(struct ahd_softc *ahd);
void ahd_run_untagged_queue(struct ahd_softc *ahd,
struct scb_tailq *queue);
void ahd_qinfifo_requeue_tail(struct ahd_softc *ahd,
struct scb *scb);
int ahd_match_scb(struct ahd_softc *ahd, struct scb *scb,
int target, char channel, int lun,
u_int tag, role_t role);
/****************************** Initialization ********************************/
struct ahd_softc *ahd_alloc(void *platform_arg, char *name);
int ahd_softc_init(struct ahd_softc *);
void ahd_controller_info(struct ahd_softc *ahd, char *buf);
int ahd_init(struct ahd_softc *ahd);
int ahd_default_config(struct ahd_softc *ahd);
int ahd_parse_cfgdata(struct ahd_softc *ahd,
struct seeprom_config *sc);
void ahd_intr_enable(struct ahd_softc *ahd, int enable);
void ahd_pause_and_flushwork(struct ahd_softc *ahd);
int ahd_suspend(struct ahd_softc *ahd);
int ahd_resume(struct ahd_softc *ahd);
void ahd_softc_insert(struct ahd_softc *);
struct ahd_softc *ahd_find_softc(struct ahd_softc *ahd);
void ahd_set_unit(struct ahd_softc *, int);
void ahd_set_name(struct ahd_softc *, char *);
void ahd_alloc_scbs(struct ahd_softc *ahd);
void ahd_free(struct ahd_softc *ahd);
int ahd_reset(struct ahd_softc *ahd);
void ahd_shutdown(void *arg);
int ahd_write_flexport(struct ahd_softc *ahd,
u_int addr, u_int value);
int ahd_read_flexport(struct ahd_softc *ahd, u_int addr,
uint8_t *value);
int ahd_wait_flexport(struct ahd_softc *ahd);
/*************************** Interrupt Services *******************************/
void ahd_pci_intr(struct ahd_softc *ahd);
void ahd_clear_intstat(struct ahd_softc *ahd);
void ahd_run_qoutfifo(struct ahd_softc *ahd);
#ifdef AHD_TARGET_MODE
void ahd_run_tqinfifo(struct ahd_softc *ahd, int paused);
#endif
void ahd_handle_hwerrint(struct ahd_softc *ahd);
void ahd_handle_seqint(struct ahd_softc *ahd, u_int intstat);
void ahd_handle_scsiint(struct ahd_softc *ahd,
u_int intstat);
void ahd_clear_critical_section(struct ahd_softc *ahd);
/***************************** Error Recovery *********************************/
typedef enum {
SEARCH_COMPLETE,
SEARCH_COUNT,
SEARCH_REMOVE,
SEARCH_PRINT
} ahd_search_action;
int ahd_search_qinfifo(struct ahd_softc *ahd, int target,
char channel, int lun, u_int tag,
role_t role, uint32_t status,
ahd_search_action action);
int ahd_search_disc_list(struct ahd_softc *ahd, int target,
char channel, int lun, u_int tag,
int stop_on_first, int remove,
int save_state);
void ahd_freeze_devq(struct ahd_softc *ahd, struct scb *scb);
int ahd_reset_channel(struct ahd_softc *ahd, char channel,
int initiate_reset);
int ahd_abort_scbs(struct ahd_softc *ahd, int target,
char channel, int lun, u_int tag,
role_t role, uint32_t status);
void ahd_restart(struct ahd_softc *ahd);
void ahd_clear_fifo(struct ahd_softc *ahd, u_int fifo);
void ahd_handle_scb_status(struct ahd_softc *ahd,
struct scb *scb);
void ahd_handle_scsi_status(struct ahd_softc *ahd,
struct scb *scb);
void ahd_calc_residual(struct ahd_softc *ahd,
struct scb *scb);
/*************************** Utility Functions ********************************/
struct ahd_phase_table_entry*
ahd_lookup_phase_entry(int phase);
void ahd_compile_devinfo(struct ahd_devinfo *devinfo,
u_int our_id, u_int target,
u_int lun, char channel,
role_t role);
/************************** Transfer Negotiation ******************************/
void ahd_find_syncrate(struct ahd_softc *ahd, u_int *period,
u_int *ppr_options, u_int maxsync);
void ahd_validate_offset(struct ahd_softc *ahd,
struct ahd_initiator_tinfo *tinfo,
u_int period, u_int *offset,
int wide, role_t role);
void ahd_validate_width(struct ahd_softc *ahd,
struct ahd_initiator_tinfo *tinfo,
u_int *bus_width,
role_t role);
int ahd_update_neg_request(struct ahd_softc*,
struct ahd_devinfo*,
struct ahd_tmode_tstate*,
struct ahd_initiator_tinfo*,
int /*force*/);
void ahd_set_width(struct ahd_softc *ahd,
struct ahd_devinfo *devinfo,
u_int width, u_int type, int paused);
void ahd_set_syncrate(struct ahd_softc *ahd,
struct ahd_devinfo *devinfo,
u_int period, u_int offset,
u_int ppr_options,
u_int type, int paused);
typedef enum {
AHD_QUEUE_NONE,
AHD_QUEUE_BASIC,
AHD_QUEUE_TAGGED
} ahd_queue_alg;
void ahd_set_tags(struct ahd_softc *ahd,
struct ahd_devinfo *devinfo,
ahd_queue_alg alg);
/**************************** Target Mode *************************************/
#ifdef AHD_TARGET_MODE
void ahd_send_lstate_events(struct ahd_softc *,
struct ahd_tmode_lstate *);
void ahd_handle_en_lun(struct ahd_softc *ahd,
struct cam_sim *sim, union ccb *ccb);
cam_status ahd_find_tmode_devs(struct ahd_softc *ahd,
struct cam_sim *sim, union ccb *ccb,
struct ahd_tmode_tstate **tstate,
struct ahd_tmode_lstate **lstate,
int notfound_failure);
#ifndef AHD_TMODE_ENABLE
#define AHD_TMODE_ENABLE 0
#endif
#endif
/******************************* Debug ***************************************/
#ifdef AHD_DEBUG
extern uint32_t ahd_debug;
#define AHD_SHOW_MISC 0x0001
#define AHD_SHOW_SENSE 0x0002
#define AHD_DUMP_SEEPROM 0x0004
#define AHD_SHOW_TERMCTL 0x0008
#define AHD_SHOW_MEMORY 0x0010
#define AHD_SHOW_MESSAGES 0x0020
#define AHD_SHOW_MODEPTR 0x0040
#define AHD_SHOW_SELTO 0x0080
#define AHD_SHOW_FIFOS 0x0100
#define AHD_SHOW_QFULL 0x0200
#define AHD_SHOW_QUEUE 0x0400
#define AHD_SHOW_TQIN 0x0800
#define AHD_DEBUG_SEQUENCER 0x1000
#endif
void ahd_print_scb(struct scb *scb);
void ahd_dump_sglist(struct scb *scb);
void ahd_dump_all_cards_state(void);
void ahd_dump_card_state(struct ahd_softc *ahd);
void ahd_dump_scbs(struct ahd_softc *ahd);
#endif /* _AIC79XX_H_ */
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