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Diffstat (limited to 'drivers/scsi/aic7xxx/aic79xx.h')
| -rw-r--r-- | drivers/scsi/aic7xxx/aic79xx.h | 1478 |
1 files changed, 1478 insertions, 0 deletions
diff --git a/drivers/scsi/aic7xxx/aic79xx.h b/drivers/scsi/aic7xxx/aic79xx.h new file mode 100644 index 000000000..df2e0e536 --- /dev/null +++ b/drivers/scsi/aic7xxx/aic79xx.h @@ -0,0 +1,1478 @@ +/* + * 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 TRUE +#define TRUE 1 +#endif +#ifndef FALSE +#define FALSE 0 +#endif + +#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) \ + ((((u8)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 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 +}; + +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 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 + +#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 */ + const 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 termination_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_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_pci_state { + uint32_t devconfig; + uint8_t command; + uint8_t csize_lattime; +}; + +struct ahd_suspend_state { + struct ahd_suspend_channel_state channel[2]; + struct ahd_suspend_pci_state pci_state; + 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; + const char *name; + ahd_device_setup_t *setup; +}; + +/***************************** VL/EISA Declarations ***************************/ +struct aic7770_identity { + uint32_t full_id; + uint32_t id_mask; + const 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 ****************************/ +/******************************************************************************/ + +/***************************** PCI Front End *********************************/ +const struct ahd_pci_identity *ahd_find_pci_device(ahd_dev_softc_t); +int ahd_pci_config(struct ahd_softc *, + const struct ahd_pci_identity *); +int ahd_pci_test_register_access(struct ahd_softc *); +#ifdef CONFIG_PM +void ahd_pci_suspend(struct ahd_softc *); +void ahd_pci_resume(struct ahd_softc *); +#endif + +/************************** SCB and SCB queue management **********************/ +void ahd_qinfifo_requeue_tail(struct ahd_softc *ahd, + struct scb *scb); + +/****************************** 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); +#ifdef CONFIG_PM +int ahd_suspend(struct ahd_softc *ahd); +void ahd_resume(struct ahd_softc *ahd); +#endif +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_pause_and_flushwork(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_free(struct ahd_softc *ahd); +int ahd_reset(struct ahd_softc *ahd, int reinit); +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); + +/***************************** 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); +int ahd_reset_channel(struct ahd_softc *ahd, char channel, + int initiate_reset); +/*************************** Utility Functions ********************************/ +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); +/* + * 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; + +/**************************** 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_devinfo(struct ahd_softc *ahd, + struct ahd_devinfo *devinfo); +void ahd_dump_card_state(struct ahd_softc *ahd); +int ahd_print_register(const 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); +#endif /* _AIC79XX_H_ */ |