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b0d2364887
linux/drivers/scsi/aic7xxx/aic79xx.h
Hannes Reinecke b0d2364887 [SCSI] aic79xx: target hotplug fixes 
When a target is added aic79xx tries to be overly clever: it changes
the command on the fly to TEST UNIT READY and tries to requeue the
original command. Sadly this breaks SCSI compability and of course
the midlayer is getting a bit confused by it.

So we're just removing that bit of code and let the midlayer deal with
it. It's clever enough by now. And the driver code is getting simpler.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-04-13 13:23:11 -05:00

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/*
* Core definitions and data structures shareable across OS platforms.
*
* Copyright (c) 1994-2002 Justin T. Gibbs.
* Copyright (c) 2000-2002 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#109 $
*
* $FreeBSD$
*/
#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 QOUTFIFO_ENTRY_VALID 0x80
#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)))
#ifdef AHD_DEBUG
#define SCB_IS_SILENT(scb) \
((ahd_debug & AHD_SHOW_MASKED_ERRORS) == 0 \
&& (((scb)->flags & SCB_SILENT) != 0))
#else
#define SCB_IS_SILENT(scb) \
(((scb)->flags & SCB_SILENT) != 0)
#endif
/*
* TCLs have the following format: TTTTLLLLLLLL
*/
#define TCL_TARGET_OFFSET(tcl) \
((((tcl) >> 4) & TID) >> 4)
#define TCL_LUN(tcl) \
(tcl & (AHD_NUM_LUNS - 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
#define AHD_BUILD_COL_IDX(target, lun) \
(((lun) << 4) | target)
#define AHD_GET_SCB_COL_IDX(ahd, scb) \
((SCB_GET_LUN(scb) << 4) | SCB_GET_TARGET(ahd, scb))
#define AHD_SET_SCB_COL_IDX(scb, col_idx) \
do { \
(scb)->hscb->scsiid = ((col_idx) << TID_SHIFT) & TID; \
(scb)->hscb->lun = ((col_idx) >> 4) & (AHD_NUM_LUNS_NONPKT-1); \
} while (0)
#define AHD_COPY_SCB_COL_IDX(dst, src) \
do { \
dst->hscb->scsiid = src->hscb->scsiid; \
dst->hscb->lun = src->hscb->lun; \
} while (0)
#define AHD_NEVER_COL_IDX 0xFFFF
/**************************** 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.
*/
#define AHD_MAX_QUEUE AHD_SCB_MAX
/*
* Define the size of our QIN and QOUT FIFOs. They must be a power of 2
* in size and accommodate as many transactions as can be queued concurrently.
*/
#define AHD_QIN_SIZE AHD_MAX_QUEUE
#define AHD_QOUT_SIZE AHD_MAX_QUEUE
#define AHD_QIN_WRAP(x) ((x) & (AHD_QIN_SIZE-1))
/*
* The maximum amount of SCB storage we allocate in host memory.
*/
#define AHD_SCB_MAX_ALLOC AHD_MAX_QUEUE
/*
* 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 25
/******************* 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_AIC7901A = 0x0003,
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_AIC79XXB_SLOWCRC = 0x00002,/* SLOWCRC bit should be set */
AHD_MULTI_FUNC = 0x00100,/* Multi-Function/Channel Device */
AHD_TARGETMODE = 0x01000,/* Has tested target mode support */
AHD_MULTIROLE = 0x02000,/* Space for two roles at a time */
AHD_RTI = 0x04000,/* Retained Training Support */
AHD_NEW_IOCELL_OPTS = 0x08000,/* More Signal knobs in the IOCELL */
AHD_NEW_DFCNTRL_OPTS = 0x10000,/* SCSIENWRDIS bit */
AHD_FAST_CDB_DELIVERY = 0x20000,/* CDB acks released to Output Sync */
AHD_REMOVABLE = 0x00000,/* Hot-Swap supported - None so far*/
AHD_AIC7901_FE = AHD_FENONE,
AHD_AIC7901A_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,
/*
* Rev A hardware fails to update LAST/CURR/NEXTSCB
* correctly in certain packetized selection cases.
*/
AHD_SENT_SCB_UPDATE_BUG = 0x0001,
/* The wrong SCB is accessed to check the abort pending bit. */
AHD_ABORT_LQI_BUG = 0x0002,
/* Packetized bitbucket crosses packet boundaries. */
AHD_PKT_BITBUCKET_BUG = 0x0004,
/* The selection timer runs twice as long as its setting. */
AHD_LONG_SETIMO_BUG = 0x0008,
/* The Non-LQ CRC error status is delayed until phase change. */
AHD_NLQICRC_DELAYED_BUG = 0x0010,
/* The chip must be reset for all outgoing bus resets. */
AHD_SCSIRST_BUG = 0x0020,
/* Some PCIX fields must be saved and restored across chip reset. */
AHD_PCIX_CHIPRST_BUG = 0x0040,
/* MMAPIO is not functional in PCI-X mode. */
AHD_PCIX_MMAPIO_BUG = 0x0080,
/* Reads to SCBRAM fail to reset the discard timer. */
AHD_PCIX_SCBRAM_RD_BUG = 0x0100,
/* Bug workarounds that can be disabled on non-PCIX busses. */
AHD_PCIX_BUG_MASK = AHD_PCIX_CHIPRST_BUG
| AHD_PCIX_MMAPIO_BUG
| AHD_PCIX_SCBRAM_RD_BUG,
/*
* LQOSTOP0 status set even for forced selections with ATN
* to perform non-packetized message delivery.
*/
AHD_LQO_ATNO_BUG = 0x0200,
/* FIFO auto-flush does not always trigger. */
AHD_AUTOFLUSH_BUG = 0x0400,
/* The CLRLQO registers are not self-clearing. */
AHD_CLRLQO_AUTOCLR_BUG = 0x0800,
/* The PACKETIZED status bit refers to the previous connection. */
AHD_PKTIZED_STATUS_BUG = 0x1000,
/* "Short Luns" are not placed into outgoing LQ packets correctly. */
AHD_PKT_LUN_BUG = 0x2000,
/*
* Only the FIFO allocated to the non-packetized connection may
* be in use during a non-packetzied connection.
*/
AHD_NONPACKFIFO_BUG = 0x4000,
/*
* Writing to a DFF SCBPTR register may fail if concurent with
* a hardware write to the other DFF SCBPTR register. This is
* not currently a concern in our sequencer since all chips with
* this bug have the AHD_NONPACKFIFO_BUG and all writes of concern
* occur in non-packetized connections.
*/
AHD_MDFF_WSCBPTR_BUG = 0x8000,
/* SGHADDR updates are slow. */
AHD_REG_SLOW_SETTLE_BUG = 0x10000,
/*
* Changing the MODE_PTR coincident with an interrupt that
* switches to a different mode will cause the interrupt to
* be in the mode written outside of interrupt context.
*/
AHD_SET_MODE_BUG = 0x20000,
/* Non-packetized busfree revision does not work. */
AHD_BUSFREEREV_BUG = 0x40000,
/*
* Paced transfers are indicated with a non-standard PPR
* option bit in the neg table, 160MHz is indicated by
* sync factor 0x7, and the offset if off by a factor of 2.
*/
AHD_PACED_NEGTABLE_BUG = 0x80000,
/* LQOOVERRUN false positives. */
AHD_LQOOVERRUN_BUG = 0x100000,
/*
* Controller write to INTSTAT will lose to a host
* write to CLRINT.
*/
AHD_INTCOLLISION_BUG = 0x200000,
/*
* The GEM318 violates the SCSI spec by not waiting
* the mandated bus settle delay between phase changes
* in some situations. Some aic79xx chip revs. are more
* strict in this regard and will treat REQ assertions
* that fall within the bus settle delay window as
* glitches. This flag tells the firmware to tolerate
* early REQ assertions.
*/
AHD_EARLY_REQ_BUG = 0x400000,
/*
* The LED does not stay on long enough in packetized modes.
*/
AHD_FAINT_LED_BUG = 0x800000
} ahd_bug;
/*
* Configuration specific settings.
* The driver determines these settings by probing the
* chip/controller's configuration.
*/
typedef enum {
AHD_FNONE = 0x00000,
AHD_BOOT_CHANNEL = 0x00001,/* We were set as the boot channel. */
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_HP_BOARD = 0x100000,
AHD_BUS_RESET_ACTIVE = 0x200000,
AHD_UPDATE_PEND_CMDS = 0x400000,
AHD_RUNNING_QOUTFIFO = 0x800000,
AHD_HAD_FIRST_SEL = 0x1000000
} 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 available 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 interrupting
* 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 {
struct {
uint64_t cdbptr;
uint8_t cdblen;
} cdb_from_host;
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*/ uint16_t tag; /* Reused by Sequencer. */
/*18*/ uint8_t control; /* See SCB_CONTROL in aic79xx.reg for details */
/*19*/ uint8_t scsiid; /*
* Selection out Id
* Our Id (bits 0-3) Their ID (bits 4-7)
*/
/*20*/ uint8_t lun;
/*21*/ uint8_t task_attribute;
/*22*/ uint8_t cdb_len;
/*23*/ uint8_t task_management;
/*24*/ uint64_t dataptr;
/*32*/ uint32_t datacnt; /* Byte 3 is spare. */
/*36*/ uint32_t sgptr;
/*40*/ uint32_t hscb_busaddr;
/*44*/ uint32_t next_hscb_busaddr;
/********** Long lun field only downloaded for full 8 byte lun support ********/
/*48*/ uint8_t pkt_long_lun[8];
/******* Fields below are not Downloaded (Sequencer may use for scratch) ******/
/*56*/ uint8_t spare[8];
};
/************************ 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;
dma_addr_t physaddr;
uint8_t *vaddr;
SLIST_ENTRY(map_node) links;
};
/*
* The current state of this SCB.
*/
typedef enum {
SCB_FLAG_NONE = 0x00000,
SCB_TRANSMISSION_ERROR = 0x00001,/*
* 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 = 0x00002,/*
* 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 = 0x00004,
SCB_SENSE = 0x00008,
SCB_CDB32_PTR = 0x00010,
SCB_RECOVERY_SCB = 0x00020,
SCB_AUTO_NEGOTIATE = 0x00040,/* Negotiate to achieve goal. */
SCB_NEGOTIATE = 0x00080,/* Negotiation forced for command. */
SCB_ABORT = 0x00100,
SCB_ACTIVE = 0x00200,
SCB_TARGET_IMMEDIATE = 0x00400,
SCB_PACKETIZED = 0x00800,
SCB_EXPECT_PPR_BUSFREE = 0x01000,
SCB_PKT_SENSE = 0x02000,
SCB_EXTERNAL_RESET = 0x04000,/* Device was reset externally */
SCB_ON_COL_LIST = 0x08000,
SCB_SILENT = 0x10000 /*
* Be quiet about transmission type
* errors. They are expected and we
* don't want to upset the user. This
* flag is typically used during DV.
*/
} scb_flag;
struct scb {
struct hardware_scb *hscb;
union {
SLIST_ENTRY(scb) sle;
LIST_ENTRY(scb) le;
TAILQ_ENTRY(scb) tqe;
} links;
union {
SLIST_ENTRY(scb) sle;
LIST_ENTRY(scb) le;
TAILQ_ENTRY(scb) tqe;
} links2;
#define pending_links links2.le
#define collision_links links2.le
struct scb *col_scb;
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;
dma_addr_t sg_list_busaddr;
dma_addr_t sense_busaddr;
u_int sg_count;/* How full ahd_dma_seg is */
#define AHD_MAX_LQ_CRC_ERRORS 5
u_int crc_retry_count;
};
TAILQ_HEAD(scb_tailq, scb);
LIST_HEAD(scb_list, scb);
struct scb_data {
/*
* TAILQ of lists of free SCBs grouped by device
* collision domains.
*/
struct scb_tailq free_scbs;
/*
* Per-device lists of SCBs whose tag ID would collide
* with an already active tag on the device.
*/
struct scb_list free_scb_lists[AHD_NUM_TARGETS * AHD_NUM_LUNS_NONPKT];
/*
* SCBs that will not collide with any active device.
*/
struct scb_list any_dev_free_scb_list;
/*
* Mapping from tag to SCB.
*/
struct scb *scbindex[AHD_SCB_MAX];
/*
* "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_10MHz 0x19
#define AHD_WIDTH_UNKNOWN 0xFF
#define AHD_PERIOD_UNKNOWN 0xFF
#define AHD_OFFSET_UNKNOWN 0xFF
#define AHD_PPR_OPTS_UNKNOWN 0xFF
/*
* 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_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
#define AHD_SYNCRATE_MAX AHD_SYNCRATE_160
/* Safe and valid period for async negotiations. */
#define AHD_ASYNC_XFER_PERIOD 0x44
/*
* 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 */
};
/*
* Vital Product Data used during POST and by the BIOS.
*/
struct vpd_config {
uint8_t bios_flags;
#define VPDMASTERBIOS 0x0001
#define VPDBOOTHOST 0x0002
uint8_t reserved_1[21];
uint8_t resource_type;
uint8_t resource_len[2];
uint8_t resource_data[8];
uint8_t vpd_tag;
uint16_t vpd_len;
uint8_t vpd_keyword[2];
uint8_t length;
uint8_t revision;
uint8_t device_flags;
uint8_t termnation_menus[2];
uint8_t fifo_threshold;
uint8_t end_tag;
uint8_t vpd_checksum;
uint16_t default_target_flags;
uint16_t default_bios_flags;
uint16_t default_ctrl_flags;
uint8_t default_irq;
uint8_t pci_lattime;
uint8_t max_target;
uint8_t boot_lun;
uint16_t signature;
uint8_t reserved_2;
uint8_t checksum;
uint8_t reserved_3[4];
};
/****************************** 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 bstream);
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_vpd_cksum(struct vpd_config *vpd);
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_EXPECT_QASREJ_BUSFREE = 0x08,
MSG_FLAG_PACKETIZED = 0x10
} 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 *********************/
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_completion
{
uint16_t tag;
uint8_t sg_status;
uint8_t valid_tag;
};
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 hardware_scb *next_queued_hscb;
struct map_node *next_queued_hscb_map;
/*
* 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;
/*
* 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;
ahd_timer_t stat_timer;
/*
* Statistics.
*/
#define AHD_STAT_UPDATE_US 250000 /* 250ms */
#define AHD_STAT_BUCKETS 4
u_int cmdcmplt_bucket;
uint32_t cmdcmplt_counts[AHD_STAT_BUCKETS];
uint32_t cmdcmplt_total;
/*
* Card characteristics
*/
ahd_chip chip;
ahd_feature features;
ahd_bug bugs;
ahd_flag flags;
struct seeprom_config *seep_config;
/* Command Queues */
struct ahd_completion *qoutfifo;
uint16_t qoutfifonext;
uint16_t qoutfifonext_valid_tag;
uint16_t qinfifonext;
uint16_t qinfifo[AHD_SCB_MAX];
/*
* Our qfreeze count. The sequencer compares
* this value with its own counter to determine
* whether to allow selections to occur.
*/
uint16_t qfreeze_cnt;
/* Values to store in the SEQCTL register for pause and unpause */
uint8_t unpause;
uint8_t pause;
/* 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;
/*
* Target incoming command FIFO.
*/
struct target_cmd *targetcmds;
uint8_t tqinfifonext;
/*
* Cached verson of the hs_mailbox so we can avoid
* pausing the sequencer during mailbox updates.
*/
uint8_t hs_mailbox;
/*
* 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;
struct map_node shared_data_map;
/* 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;
/* IO Cell Parameters */
uint8_t iocell_opts[AHD_NUM_PER_DEV_ANNEXCOLS];
u_int stack_size;
uint16_t *saved_stack;
/* Per-Unit descriptive information */
const char *description;
const char *bus_description;
char *name;
int unit;
/* Selection Timer settings */
int seltime;
/*
* Interrupt coalescing settings.
*/
#define AHD_INT_COALESCING_TIMER_DEFAULT 250 /*us*/
#define AHD_INT_COALESCING_MAXCMDS_DEFAULT 10
#define AHD_INT_COALESCING_MAXCMDS_MAX 127
#define AHD_INT_COALESCING_MINCMDS_DEFAULT 5
#define AHD_INT_COALESCING_MINCMDS_MAX 127
#define AHD_INT_COALESCING_THRESHOLD_DEFAULT 2000
#define AHD_INT_COALESCING_STOP_THRESHOLD_DEFAULT 1000
u_int int_coalescing_timer;
u_int int_coalescing_maxcmds;
u_int int_coalescing_mincmds;
u_int int_coalescing_threshold;
u_int int_coalescing_stop_threshold;
uint16_t user_discenable;/* Disconnection allowed */
uint16_t user_tagenable;/* Tagged Queuing allowed */
};
/*************************** IO Cell Configuration ****************************/
#define AHD_PRECOMP_SLEW_INDEX \
(AHD_ANNEXCOL_PRECOMP_SLEW - AHD_ANNEXCOL_PER_DEV0)
#define AHD_AMPLITUDE_INDEX \
(AHD_ANNEXCOL_AMPLITUDE - AHD_ANNEXCOL_PER_DEV0)
#define AHD_SET_SLEWRATE(ahd, new_slew) \
do { \
(ahd)->iocell_opts[AHD_PRECOMP_SLEW_INDEX] &= ~AHD_SLEWRATE_MASK; \
(ahd)->iocell_opts[AHD_PRECOMP_SLEW_INDEX] |= \
(((new_slew) << AHD_SLEWRATE_SHIFT) & AHD_SLEWRATE_MASK); \
} while (0)
#define AHD_SET_PRECOMP(ahd, new_pcomp) \
do { \
(ahd)->iocell_opts[AHD_PRECOMP_SLEW_INDEX] &= ~AHD_PRECOMP_MASK; \
(ahd)->iocell_opts[AHD_PRECOMP_SLEW_INDEX] |= \
(((new_pcomp) << AHD_PRECOMP_SHIFT) & AHD_PRECOMP_MASK); \
} while (0)
#define AHD_SET_AMPLITUDE(ahd, new_amp) \
do { \
(ahd)->iocell_opts[AHD_AMPLITUDE_INDEX] &= ~AHD_AMPLITUDE_MASK; \
(ahd)->iocell_opts[AHD_AMPLITUDE_INDEX] |= \
(((new_amp) << AHD_AMPLITUDE_SHIFT) & AHD_AMPLITUDE_MASK); \
} while (0)
/************************ 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_BAR(0) /* I/O BAR*/
#define AHD_PCI_MEMADDR PCIR_BAR(1) /* Memory BAR */
#define AHD_PCI_IOADDR1 PCIR_BAR(3) /* 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 ****************************/
/******************************************************************************/
void ahd_reset_cmds_pending(struct ahd_softc *ahd);
u_int ahd_find_busy_tcl(struct ahd_softc *ahd, u_int tcl);
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 *);
int ahd_pci_test_register_access(struct ahd_softc *);
/************************** SCB and SCB queue management **********************/
int ahd_probe_scbs(struct ahd_softc *);
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_vpddata(struct ahd_softc *ahd,
struct vpd_config *vpd);
int ahd_parse_cfgdata(struct ahd_softc *ahd,
struct seeprom_config *sc);
void ahd_intr_enable(struct ahd_softc *ahd, int enable);
void ahd_update_coalescing_values(struct ahd_softc *ahd,
u_int timer,
u_int maxcmds,
u_int mincmds);
void ahd_enable_coalescing(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_set_unit(struct ahd_softc *, int);
void ahd_set_name(struct ahd_softc *, char *);
struct scb *ahd_get_scb(struct ahd_softc *ahd, u_int col_idx);
void ahd_free_scb(struct ahd_softc *ahd, struct scb *scb);
void ahd_alloc_scbs(struct ahd_softc *ahd);
void ahd_free(struct ahd_softc *ahd);
int ahd_reset(struct ahd_softc *ahd, int reinit);
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_flush_qoutfifo(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);
/*
* Negotiation types. These are used to qualify if we should renegotiate
* even if our goal and current transport parameters are identical.
*/
typedef enum {
AHD_NEG_TO_GOAL, /* Renegotiate only if goal and curr differ. */
AHD_NEG_IF_NON_ASYNC, /* Renegotiate so long as goal is non-async. */
AHD_NEG_ALWAYS /* Renegotiat even if goal is async. */
} ahd_neg_type;
int ahd_update_neg_request(struct ahd_softc*,
struct ahd_devinfo*,
struct ahd_tmode_tstate*,
struct ahd_initiator_tinfo*,
ahd_neg_type);
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 0x00001
#define AHD_SHOW_SENSE 0x00002
#define AHD_SHOW_RECOVERY 0x00004
#define AHD_DUMP_SEEPROM 0x00008
#define AHD_SHOW_TERMCTL 0x00010
#define AHD_SHOW_MEMORY 0x00020
#define AHD_SHOW_MESSAGES 0x00040
#define AHD_SHOW_MODEPTR 0x00080
#define AHD_SHOW_SELTO 0x00100
#define AHD_SHOW_FIFOS 0x00200
#define AHD_SHOW_QFULL 0x00400
#define AHD_SHOW_DV 0x00800
#define AHD_SHOW_MASKED_ERRORS 0x01000
#define AHD_SHOW_QUEUE 0x02000
#define AHD_SHOW_TQIN 0x04000
#define AHD_SHOW_SG 0x08000
#define AHD_SHOW_INT_COALESCING 0x10000
#define AHD_DEBUG_SEQUENCER 0x20000
#endif
void ahd_print_scb(struct scb *scb);
void ahd_print_devinfo(struct ahd_softc *ahd,
struct ahd_devinfo *devinfo);
void ahd_dump_sglist(struct scb *scb);
void ahd_dump_card_state(struct ahd_softc *ahd);
int ahd_print_register(ahd_reg_parse_entry_t *table,
u_int num_entries,
const char *name,
u_int address,
u_int value,
u_int *cur_column,
u_int wrap_point);
void ahd_dump_scbs(struct ahd_softc *ahd);
#endif /* _AIC79XX_H_ */
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