/* * 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 $ * * $FreeBSD$
*/
#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.
*/ typedefenum {
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.
*/ typedefenum {
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.
*/ typedefenum {
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.
*/ typedefenum {
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;
/* * 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 transferring 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 transferred 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
};
/* * The current state of this SCB.
*/ typedefenum {
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_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.
*/
};
/* * Connection descriptor 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
/*
* 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 */
};
/* 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 */ constchar *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 */
/* * 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;
/* * 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;
/* * Cached version 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;
/************************ Active Device Information ***************************/ typedefenum {
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 */
/*************************** Function Declarations ****************************/ /******************************************************************************/
/***************************** PCI Front End *********************************/ conststruct ahd_pci_identity *ahd_find_pci_device(ahd_dev_softc_t); int ahd_pci_config(struct ahd_softc *, conststruct ahd_pci_identity *); int ahd_pci_test_register_access(struct ahd_softc *); void __maybe_unused ahd_pci_suspend(struct ahd_softc *); void __maybe_unused ahd_pci_resume(struct ahd_softc *);
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