| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Linus Torvalds | 2612 | 85.16% | 4 | 16.00% |
| Justin T. Gibbs | 401 | 13.07% | 8 | 32.00% |
| James Bottomley | 18 | 0.59% | 4 | 16.00% |
| FUJITA Tomonori | 10 | 0.33% | 1 | 4.00% |
| Hannes Reinecke | 9 | 0.29% | 1 | 4.00% |
| Denys Vlasenko | 7 | 0.23% | 2 | 8.00% |
| Christoph Hellwig | 5 | 0.16% | 1 | 4.00% |
| Lucas De Marchi | 2 | 0.07% | 1 | 4.00% |
| Steven Cole | 1 | 0.03% | 1 | 4.00% |
| Justin P. Mattock | 1 | 0.03% | 1 | 4.00% |
| Michal Marek | 1 | 0.03% | 1 | 4.00% |
| Total | 3067 | 25 |
/* * Core definitions and data structures shareable across OS platforms. * * Copyright (c) 1994-2001 Justin T. Gibbs. * Copyright (c) 2000-2001 Adaptec Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * substantially similar to the "NO WARRANTY" disclaimer below * ("Disclaimer") and any redistribution must be conditioned upon * including a substantially similar Disclaimer requirement for further * binary redistribution. * 3. Neither the names of the above-listed copyright holders nor the names * of any contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * NO WARRANTY * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGES. * * $Id: //depot/aic7xxx/aic7xxx/aic7xxx.h#85 $ * * $FreeBSD$ */ #ifndef _AIC7XXX_H_ #define _AIC7XXX_H_ /* Register Definitions */ #include "aic7xxx_reg.h" /************************* Forward Declarations *******************************/ struct ahc_platform_data; struct scb_platform_data; struct seeprom_descriptor; /****************************** 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 SCSIID_TARGET(ahc, scsiid) \ (((scsiid) & ((((ahc)->features & AHC_TWIN) != 0) ? TWIN_TID : TID)) \ >> TID_SHIFT) #define SCSIID_OUR_ID(scsiid) \ ((scsiid) & OID) #define SCSIID_CHANNEL(ahc, scsiid) \ ((((ahc)->features & AHC_TWIN) != 0) \ ? ((((scsiid) & TWIN_CHNLB) != 0) ? 'B' : 'A') \ : 'A') #define SCB_IS_SCSIBUS_B(ahc, scb) \ (SCSIID_CHANNEL(ahc, (scb)->hscb->scsiid) == 'B') #define SCB_GET_OUR_ID(scb) \ SCSIID_OUR_ID((scb)->hscb->scsiid) #define SCB_GET_TARGET(ahc, scb) \ SCSIID_TARGET((ahc), (scb)->hscb->scsiid) #define SCB_GET_CHANNEL(ahc, scb) \ SCSIID_CHANNEL(ahc, (scb)->hscb->scsiid) #define SCB_GET_LUN(scb) \ ((scb)->hscb->lun & LID) #define SCB_GET_TARGET_OFFSET(ahc, scb) \ (SCB_GET_TARGET(ahc, scb) + (SCB_IS_SCSIBUS_B(ahc, scb) ? 8 : 0)) #define SCB_GET_TARGET_MASK(ahc, scb) \ (0x01 << (SCB_GET_TARGET_OFFSET(ahc, scb))) #ifdef AHC_DEBUG #define SCB_IS_SILENT(scb) \ ((ahc_debug & AHC_SHOW_MASKED_ERRORS) == 0 \ && (((scb)->flags & SCB_SILENT) != 0)) #else #define SCB_IS_SILENT(scb) \ (((scb)->flags & SCB_SILENT) != 0) #endif #define TCL_TARGET_OFFSET(tcl) \ ((((tcl) >> 4) & TID) >> 4) #define TCL_LUN(tcl) \ (tcl & (AHC_NUM_LUNS - 1)) #define BUILD_TCL(scsiid, lun) \ ((lun) | (((scsiid) & TID) << 4)) #ifndef AHC_TARGET_MODE #undef AHC_TMODE_ENABLE #define AHC_TMODE_ENABLE 0 #endif /**************************** Driver Constants ********************************/ /* * The maximum number of supported targets. */ #define AHC_NUM_TARGETS 16 /* * The maximum number of supported luns. * The identify message only supports 64 luns in SPI3. * You can have 2^64 luns when information unit transfers are enabled, * but it is doubtful this driver will ever support IUTs. */ #define AHC_NUM_LUNS 64 /* * The maximum transfer per S/G segment. */ #define AHC_MAXTRANSFER_SIZE 0x00ffffff /* limited by 24bit counter */ /* * The maximum amount of SCB storage in hardware on a controller. * This value represents an upper bound. Controllers vary in the number * they actually support. */ #define AHC_SCB_MAX 255 /* * The maximum number of concurrent transactions supported per driver instance. * Sequencer Control Blocks (SCBs) store per-transaction information. Although * the space for SCBs on the host adapter varies by model, the driver will * page the SCBs between host and controller memory as needed. We are limited * to 253 because: * 1) The 8bit nature of the RISC engine holds us to an 8bit value. * 2) We reserve one value, 255, to represent the invalid element. * 3) Our input queue scheme requires one SCB to always be reserved * in advance of queuing any SCBs. This takes us down to 254. * 4) To handle our output queue correctly on machines that only * support 32bit stores, we must clear the array 4 bytes at a * time. To avoid colliding with a DMA write from the sequencer, * we must be sure that 4 slots are empty when we write to clear * the queue. This reduces us to 253 SCBs: 1 that just completed * and the known three additional empty slots in the queue that * precede it. */ #define AHC_MAX_QUEUE 253 /* * The maximum amount of SCB storage we allocate in host memory. This * number should reflect the 1 additional SCB we require to handle our * qinfifo mechanism. */ #define AHC_SCB_MAX_ALLOC (AHC_MAX_QUEUE+1) /* * Ring Buffer of incoming target commands. * We allocate 256 to simplify the logic in the sequencer * by using the natural wrap point of an 8bit counter. */ #define AHC_TMODE_CMDS 256 /* Reset line assertion time in us */ #define AHC_BUSRESET_DELAY 25 /******************* Chip Characteristics/Operating Settings *****************/ /* * Chip Type * The chip order is from least sophisticated to most sophisticated. */ typedef enum { AHC_NONE = 0x0000, AHC_CHIPID_MASK = 0x00FF, AHC_AIC7770 = 0x0001, AHC_AIC7850 = 0x0002, AHC_AIC7855 = 0x0003, AHC_AIC7859 = 0x0004, AHC_AIC7860 = 0x0005, AHC_AIC7870 = 0x0006, AHC_AIC7880 = 0x0007, AHC_AIC7895 = 0x0008, AHC_AIC7895C = 0x0009, AHC_AIC7890 = 0x000a, AHC_AIC7896 = 0x000b, AHC_AIC7892 = 0x000c, AHC_AIC7899 = 0x000d, AHC_VL = 0x0100, /* Bus type VL */ AHC_EISA = 0x0200, /* Bus type EISA */ AHC_PCI = 0x0400, /* Bus type PCI */ AHC_BUS_MASK = 0x0F00 } ahc_chip; /* * Features available in each chip type. */ typedef enum { AHC_FENONE = 0x00000, AHC_ULTRA = 0x00001, /* Supports 20MHz Transfers */ AHC_ULTRA2 = 0x00002, /* Supports 40MHz Transfers */ AHC_WIDE = 0x00004, /* Wide Channel */ AHC_TWIN = 0x00008, /* Twin Channel */ AHC_MORE_SRAM = 0x00010, /* 80 bytes instead of 64 */ AHC_CMD_CHAN = 0x00020, /* Has a Command DMA Channel */ AHC_QUEUE_REGS = 0x00040, /* Has Queue management registers */ AHC_SG_PRELOAD = 0x00080, /* Can perform auto-SG preload */ AHC_SPIOCAP = 0x00100, /* Has a Serial Port I/O Cap Register */ AHC_MULTI_TID = 0x00200, /* Has bitmask of TIDs for select-in */ AHC_HS_MAILBOX = 0x00400, /* Has HS_MAILBOX register */ AHC_DT = 0x00800, /* Double Transition transfers */ AHC_NEW_TERMCTL = 0x01000, /* Newer termination scheme */ AHC_MULTI_FUNC = 0x02000, /* Multi-Function Twin Channel Device */ AHC_LARGE_SCBS = 0x04000, /* 64byte SCBs */ AHC_AUTORATE = 0x08000, /* Automatic update of SCSIRATE/OFFSET*/ AHC_AUTOPAUSE = 0x10000, /* Automatic pause on register access */ AHC_TARGETMODE = 0x20000, /* Has tested target mode support */ AHC_MULTIROLE = 0x40000, /* Space for two roles at a time */ AHC_REMOVABLE = 0x80000, /* Hot-Swap supported */ AHC_HVD = 0x100000, /* HVD rather than SE */ AHC_AIC7770_FE = AHC_FENONE, /* * The real 7850 does not support Ultra modes, but there are * several cards that use the generic 7850 PCI ID even though * they are using an Ultra capable chip (7859/7860). We start * out with the AHC_ULTRA feature set and then check the DEVSTATUS * register to determine if the capability is really present. */ AHC_AIC7850_FE = AHC_SPIOCAP|AHC_AUTOPAUSE|AHC_TARGETMODE|AHC_ULTRA, AHC_AIC7860_FE = AHC_AIC7850_FE, AHC_AIC7870_FE = AHC_TARGETMODE|AHC_AUTOPAUSE, AHC_AIC7880_FE = AHC_AIC7870_FE|AHC_ULTRA, /* * Although we have space for both the initiator and * target roles on ULTRA2 chips, we currently disable * the initiator role to allow multi-scsi-id target mode * configurations. We can only respond on the same SCSI * ID as our initiator role if we allow initiator operation. * At some point, we should add a configuration knob to * allow both roles to be loaded. */ AHC_AIC7890_FE = AHC_MORE_SRAM|AHC_CMD_CHAN|AHC_ULTRA2 |AHC_QUEUE_REGS|AHC_SG_PRELOAD|AHC_MULTI_TID |AHC_HS_MAILBOX|AHC_NEW_TERMCTL|AHC_LARGE_SCBS |AHC_TARGETMODE, AHC_AIC7892_FE = AHC_AIC7890_FE|AHC_DT|AHC_AUTORATE|AHC_AUTOPAUSE, AHC_AIC7895_FE = AHC_AIC7880_FE|AHC_MORE_SRAM|AHC_AUTOPAUSE |AHC_CMD_CHAN|AHC_MULTI_FUNC|AHC_LARGE_SCBS, AHC_AIC7895C_FE = AHC_AIC7895_FE|AHC_MULTI_TID, AHC_AIC7896_FE = AHC_AIC7890_FE|AHC_MULTI_FUNC, AHC_AIC7899_FE = AHC_AIC7892_FE|AHC_MULTI_FUNC } ahc_feature; /* * Bugs in the silicon that we work around in software. */ typedef enum { AHC_BUGNONE = 0x00, /* * On all chips prior to the U2 product line, * the WIDEODD S/G segment feature does not * work during scsi->HostBus transfers. */ AHC_TMODE_WIDEODD_BUG = 0x01, /* * On the aic7890/91 Rev 0 chips, the autoflush * feature does not work. A manual flush of * the DMA FIFO is required. */ AHC_AUTOFLUSH_BUG = 0x02, /* * On many chips, cacheline streaming does not work. */ AHC_CACHETHEN_BUG = 0x04, /* * On the aic7896/97 chips, cacheline * streaming must be enabled. */ AHC_CACHETHEN_DIS_BUG = 0x08, /* * PCI 2.1 Retry failure on non-empty data fifo. */ AHC_PCI_2_1_RETRY_BUG = 0x10, /* * Controller does not handle cacheline residuals * properly on S/G segments if PCI MWI instructions * are allowed. */ AHC_PCI_MWI_BUG = 0x20, /* * An SCB upload using the SCB channel's * auto array entry copy feature may * corrupt data. This appears to only * occur on 66MHz systems. */ AHC_SCBCHAN_UPLOAD_BUG = 0x40 } ahc_bug; /* * Configuration specific settings. * The driver determines these settings by probing the * chip/controller's configuration. */ typedef enum { AHC_FNONE = 0x000, AHC_PRIMARY_CHANNEL = 0x003, /* * The channel that should * be probed first. */ AHC_USEDEFAULTS = 0x004, /* * For cards without an seeprom * or a BIOS to initialize the chip's * SRAM, we use the default target * settings. */ AHC_SEQUENCER_DEBUG = 0x008, AHC_SHARED_SRAM = 0x010, AHC_LARGE_SEEPROM = 0x020, /* Uses C56_66 not C46 */ AHC_RESET_BUS_A = 0x040, AHC_RESET_BUS_B = 0x080, AHC_EXTENDED_TRANS_A = 0x100, AHC_EXTENDED_TRANS_B = 0x200, AHC_TERM_ENB_A = 0x400, AHC_TERM_ENB_B = 0x800, AHC_INITIATORROLE = 0x1000, /* * Allow initiator operations on * this controller. */ AHC_TARGETROLE = 0x2000, /* * Allow target operations on this * controller. */ AHC_NEWEEPROM_FMT = 0x4000, AHC_TQINFIFO_BLOCKED = 0x10000, /* Blocked waiting for ATIOs */ AHC_INT50_SPEEDFLEX = 0x20000, /* * Internal 50pin connector * sits behind an aic3860 */ AHC_SCB_BTT = 0x40000, /* * The busy targets table is * stored in SCB space rather * than SRAM. */ AHC_BIOS_ENABLED = 0x80000, AHC_ALL_INTERRUPTS = 0x100000, AHC_PAGESCBS = 0x400000, /* Enable SCB paging */ AHC_EDGE_INTERRUPT = 0x800000, /* Device uses edge triggered ints */ AHC_39BIT_ADDRESSING = 0x1000000, /* Use 39 bit addressing scheme. */ AHC_LSCBS_ENABLED = 0x2000000, /* 64Byte SCBs enabled */ AHC_SCB_CONFIG_USED = 0x4000000, /* No SEEPROM but SCB2 had info. */ AHC_NO_BIOS_INIT = 0x8000000, /* No BIOS left over settings. */ AHC_DISABLE_PCI_PERR = 0x10000000, AHC_HAS_TERM_LOGIC = 0x20000000 } ahc_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 (non-zero status byte). */ struct status_pkt { uint32_t residual_datacnt; /* Residual in the current S/G seg */ uint32_t residual_sg_ptr; /* The next S/G for this transfer */ uint8_t scsi_status; /* Standard SCSI status byte */ }; /* * Target mode version of the shared data SCB segment. */ struct target_data { uint32_t residual_datacnt; /* Residual in the current S/G seg */ uint32_t residual_sg_ptr; /* 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 */ }; struct hardware_scb { /*0*/ union { /* * If the cdb is 12 bytes or less, we embed it directly * in the SCB. For longer cdbs, we embed the address * of the cdb payload as seen by the chip and a DMA * is used to pull it in. */ uint8_t cdb[12]; uint32_t cdb_ptr; struct status_pkt status; struct target_data tdata; } 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, it * will set the SG_RESID_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 has occurred if a completed scb has the * SG_RESID_VALID flag set. * * o residual_sgptr and sgptr refer to the "next" sg entry * and so may point beyond the last valid sg entry for the * transfer. */ /*12*/ uint32_t dataptr; /*16*/ uint32_t datacnt; /* * Byte 3 (numbered from 0) of * the datacnt is really the * 4th byte in that data address. */ /*20*/ uint32_t sgptr; #define SG_PTR_MASK 0xFFFFFFF8 /*24*/ uint8_t control; /* See SCB_CONTROL in aic7xxx.reg for details */ /*25*/ uint8_t scsiid; /* what to load in the SCSIID register */ /*26*/ uint8_t lun; /*27*/ uint8_t tag; /* * Index into our kernel SCB array. * Also used as the tag for tagged I/O */ /*28*/ uint8_t cdb_len; /*29*/ uint8_t scsirate; /* Value for SCSIRATE register */ /*30*/ uint8_t scsioffset; /* Value for SCSIOFFSET register */ /*31*/ uint8_t next; /* * Used for threading SCBs in the * "Waiting for Selection" and * "Disconnected SCB" lists down * in the sequencer. */ /*32*/ uint8_t cdb32[32]; /* * CDB storage for cdbs of size * 13->32. We store them here * because hardware scbs are * allocated from DMA safe * memory so we are guaranteed * the controller can access * this data. */ }; /************************ 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 ahc_dma_seg { uint32_t addr; uint32_t len; #define AHC_DMA_LAST_SEG 0x80000000 #define AHC_SG_HIGH_ADDR_MASK 0x7F000000 #define AHC_SG_LEN_MASK 0x00FFFFFF }; struct sg_map_node { bus_dmamap_t sg_dmamap; dma_addr_t sg_physaddr; struct ahc_dma_seg* sg_vaddr; SLIST_ENTRY(sg_map_node) links; }; /* * The current state of this SCB. */ typedef enum { SCB_FREE = 0x0000, SCB_OTHERTCL_TIMEOUT = 0x0002,/* * Another device was active * during the first timeout for * this SCB so we gave ourselves * an additional timeout period * in case it was hogging the * bus. */ SCB_DEVICE_RESET = 0x0004, SCB_SENSE = 0x0008, SCB_CDB32_PTR = 0x0010, SCB_RECOVERY_SCB = 0x0020, SCB_AUTO_NEGOTIATE = 0x0040,/* Negotiate to achieve goal. */ SCB_NEGOTIATE = 0x0080,/* Negotiation forced for command. */ SCB_ABORT = 0x0100, SCB_UNTAGGEDQ = 0x0200, SCB_ACTIVE = 0x0400, SCB_TARGET_IMMEDIATE = 0x0800, SCB_TRANSMISSION_ERROR = 0x1000,/* * 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_TARGET_SCB = 0x2000, SCB_SILENT = 0x4000 /* * 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; TAILQ_ENTRY(scb) tqe; } links; LIST_ENTRY(scb) pending_links; ahc_io_ctx_t io_ctx; struct ahc_softc *ahc_softc; scb_flag flags; struct scb_platform_data *platform_data; struct sg_map_node *sg_map; struct ahc_dma_seg *sg_list; dma_addr_t sg_list_phys; u_int sg_count;/* How full ahc_dma_seg is */ }; struct scb_data { SLIST_HEAD(, scb) free_scbs; /* * Pool of SCBs ready to be assigned * commands to execute. */ struct scb *scbindex[256]; /* * Mapping from tag to SCB. * As tag identifiers are an * 8bit value, we provide space * for all possible tag values. * Any lookups to entries at or * above AHC_SCB_MAX_ALLOC will * always fail. */ struct hardware_scb *hscbs; /* Array of hardware SCBs */ struct scb *scbarray; /* Array of kernel SCBs */ struct scsi_sense_data *sense; /* Per SCB sense data */ /* * "Bus" addresses of our data structures. */ bus_dma_tag_t hscb_dmat; /* dmat for our hardware SCB array */ bus_dmamap_t hscb_dmamap; dma_addr_t hscb_busaddr; bus_dma_tag_t sense_dmat; bus_dmamap_t sense_dmamap; dma_addr_t sense_busaddr; bus_dma_tag_t sg_dmat; /* dmat for our sg segments */ SLIST_HEAD(, sg_map_node) sg_maps; uint8_t numscbs; uint8_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 AHC_TMODE_EVENT_BUFFER_SIZE 8 struct ahc_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 AHC_TARGET_MODE struct ahc_tmode_lstate { struct cam_path *path; struct ccb_hdr_slist accept_tios; struct ccb_hdr_slist immed_notifies; struct ahc_tmode_event event_buffer[AHC_TMODE_EVENT_BUFFER_SIZE]; uint8_t event_r_idx; uint8_t event_w_idx; }; #else struct ahc_tmode_lstate; #endif /******************** Transfer Negotiation Datastructures *********************/ #define AHC_TRANS_CUR 0x01 /* Modify current neogtiation status */ #define AHC_TRANS_ACTIVE 0x03 /* Assume this target is on the bus */ #define AHC_TRANS_GOAL 0x04 /* Modify negotiation goal */ #define AHC_TRANS_USER 0x08 /* Modify user negotiation settings */ #define AHC_WIDTH_UNKNOWN 0xFF #define AHC_PERIOD_UNKNOWN 0xFF #define AHC_OFFSET_UNKNOWN 0xFF #define AHC_PPR_OPTS_UNKNOWN 0xFF /* * Transfer Negotiation Information. */ struct ahc_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 ahc_initiator_tinfo { uint8_t scsirate; /* Computed value for SCSIRATE reg */ struct ahc_transinfo curr; struct ahc_transinfo goal; struct ahc_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 ahc_tmode_tstate { struct ahc_tmode_lstate* enabled_luns[AHC_NUM_LUNS]; struct ahc_initiator_tinfo transinfo[AHC_NUM_TARGETS]; /* * Per initiator state bitmasks. */ uint16_t auto_negotiate;/* Auto Negotiation Required */ uint16_t ultraenb; /* Using ultra sync rate */ uint16_t discenable; /* Disconnection allowed */ uint16_t tagenable; /* Tagged Queuing allowed */ }; /* * Data structure for our table of allowed synchronous transfer rates. */ struct ahc_syncrate { u_int sxfr_u2; /* Value of the SXFR parameter for Ultra2+ Chips */ u_int sxfr; /* Value of the SXFR parameter for <= Ultra Chips */ #define ULTRA_SXFR 0x100 /* Rate Requires Ultra Mode set */ #define ST_SXFR 0x010 /* Rate Single Transition Only */ #define DT_SXFR 0x040 /* Rate Double Transition Only */ uint8_t period; /* Period to send to SCSI target */ const char *rate; }; /* Safe and valid period for async negotiations. */ #define AHC_ASYNC_XFER_PERIOD 0x45 #define AHC_ULTRA2_XFER_PERIOD 0x0a /* * Indexes into our table of syncronous transfer rates. */ #define AHC_SYNCRATE_DT 0 #define AHC_SYNCRATE_ULTRA2 1 #define AHC_SYNCRATE_ULTRA 3 #define AHC_SYNCRATE_FAST 6 #define AHC_SYNCRATE_MAX AHC_SYNCRATE_DT #define AHC_SYNCRATE_MIN 13 /***************************** Lookup Tables **********************************/ /* * Phase -> name and message out response * to parity errors in each phase table. */ struct ahc_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 0x0007 /* synchronous transfer rate */ #define CFSYNCH 0x0008 /* enable synchronous transfer */ #define CFDISC 0x0010 /* enable disconnection */ #define CFWIDEB 0x0020 /* wide bus device */ #define CFSYNCHISULTRA 0x0040 /* CFSYNCH is an ultra offset (2940AU)*/ #define CFSYNCSINGLE 0x0080 /* Single-Transition signalling */ #define CFSTART 0x0100 /* send start unit SCSI command */ #define CFINCBIOS 0x0200 /* include in BIOS scan */ #define CFRNFOUND 0x0400 /* report even if not found */ #define CFMULTILUNDEV 0x0800 /* Probe multiple luns in BIOS scan */ #define CFWBCACHEENB 0x4000 /* Enable W-Behind Cache on disks */ #define CFWBCACHENOP 0xc000 /* Don't touch W-Behind Cache */ /* * BIOS Control Bits */ uint16_t bios_control; /* word 16 */ #define CFSUPREM 0x0001 /* support all removeable drives */ #define CFSUPREMB 0x0002 /* support removeable boot drives */ #define CFBIOSEN 0x0004 /* BIOS enabled */ #define CFBIOS_BUSSCAN 0x0008 /* Have the BIOS Scan the Bus */ #define CFSM2DRV 0x0010 /* support more than two drives */ #define CFSTPWLEVEL 0x0010 /* Termination level control */ #define CF284XEXTEND 0x0020 /* extended translation (284x cards) */ #define CFCTRL_A 0x0020 /* BIOS displays Ctrl-A message */ #define CFTERM_MENU 0x0040 /* BIOS displays termination menu */ #define CFEXTEND 0x0080 /* extended translation enabled */ #define CFSCAMEN 0x0100 /* SCAM enable */ #define CFMSG_LEVEL 0x0600 /* BIOS Message Level */ #define CFMSG_VERBOSE 0x0000 #define CFMSG_SILENT 0x0200 #define CFMSG_DIAG 0x0400 #define CFBOOTCD 0x0800 /* Support Bootable CD-ROM */ /* UNUSED 0xff00 */ /* * Host Adapter Control Bits */ uint16_t adapter_control; /* word 17 */ #define CFAUTOTERM 0x0001 /* Perform Auto termination */ #define CFULTRAEN 0x0002 /* Ultra SCSI speed enable */ #define CF284XSELTO 0x0003 /* Selection timeout (284x cards) */ #define CF284XFIFO 0x000C /* FIFO Threshold (284x cards) */ #define CFSTERM 0x0004 /* SCSI low byte termination */ #define CFWSTERM 0x0008 /* SCSI high byte termination */ #define CFSPARITY 0x0010 /* SCSI parity */ #define CF284XSTERM 0x0020 /* SCSI low byte term (284x cards) */ #define CFMULTILUN 0x0020 #define CFRESETB 0x0040 /* reset SCSI bus at boot */ #define CFCLUSTERENB 0x0080 /* Cluster Enable */ #define CFBOOTCHAN 0x0300 /* probe this channel first */ #define CFBOOTCHANSHIFT 8 #define CFSEAUTOTERM 0x0400 /* Ultra2 Perform secondary Auto Term*/ #define CFSELOWTERM 0x0800 /* Ultra2 secondary low term */ #define CFSEHIGHTERM 0x1000 /* Ultra2 secondary high term */ #define CFENABLEDV 0x4000 /* Perform Domain Validation*/ /* * 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 */ /* * 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; /* Signature == 0x250 */ #define CFSIGNATURE 0x250 #define CFSIGNATURE2 0x300 uint16_t checksum; /* word 31 */ }; /**************************** Message Buffer *********************************/ 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 } ahc_msg_type; typedef enum { MSGLOOP_IN_PROG, MSGLOOP_MSGCOMPLETE, MSGLOOP_TERMINATED } msg_loop_stat; /*********************** Software Configuration Structure *********************/ TAILQ_HEAD(scb_tailq, scb); struct ahc_aic7770_softc { /* * Saved register state used for chip_init(). */ uint8_t busspd; uint8_t bustime; }; struct ahc_pci_softc { /* * Saved register state used for chip_init(). */ uint32_t devconfig; uint16_t targcrccnt; uint8_t command; uint8_t csize_lattime; uint8_t optionmode; uint8_t crccontrol1; uint8_t dscommand0; uint8_t dspcistatus; uint8_t scbbaddr; uint8_t dff_thrsh; }; union ahc_bus_softc { struct ahc_aic7770_softc aic7770_softc; struct ahc_pci_softc pci_softc; }; typedef void (*ahc_bus_intr_t)(struct ahc_softc *); typedef int (*ahc_bus_chip_init_t)(struct ahc_softc *); typedef int (*ahc_bus_suspend_t)(struct ahc_softc *); typedef int (*ahc_bus_resume_t)(struct ahc_softc *); typedef void ahc_callback_t (void *); struct ahc_softc { bus_space_tag_t tag; bus_space_handle_t bsh; struct scb_data *scb_data; struct scb *next_queued_scb; /* * SCBs that have been sent to the controller */ BSD_LIST_HEAD(, scb) pending_scbs; /* * Counting lock for deferring the release of additional * untagged transactions from the untagged_queues. When * the lock is decremented to 0, all queues in the * untagged_queues array are run. */ u_int untagged_queue_lock; /* * Per-target queue of untagged-transactions. The * transaction at the head of the queue is the * currently pending untagged transaction for the * target. The driver only allows a single untagged * transaction per target. */ struct scb_tailq untagged_queues[AHC_NUM_TARGETS]; /* * Bus attachment specific data. */ union ahc_bus_softc bus_softc; /* * Platform specific data. */ struct ahc_platform_data *platform_data; /* * Platform specific device information. */ ahc_dev_softc_t dev_softc; struct device *dev; /* * Bus specific device information. */ ahc_bus_intr_t bus_intr; /* * Bus specific initialization required * after a chip reset. */ ahc_bus_chip_init_t bus_chip_init; /* * 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 ahc_tmode_tstate *enabled_targets[AHC_NUM_TARGETS]; /* * The black hole device responsible for handling requests for * disabled luns on enabled targets. */ struct ahc_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 ahc_tmode_lstate *pending_device; /* * Card characteristics */ ahc_chip chip; ahc_feature features; ahc_bug bugs; ahc_flag flags; struct seeprom_config *seep_config; /* Values to store in the SEQCTL register for pause and unpause */ uint8_t unpause; uint8_t pause; /* Command Queues */ uint8_t qoutfifonext; uint8_t qinfifonext; uint8_t *qoutfifo; uint8_t *qinfifo; /* Critical Section Data */ struct cs *critical_sections; u_int num_critical_sections; /* Channel Names ('A', 'B', etc.) */ char channel; char channel_b; /* Initiator Bus ID */ uint8_t our_id; uint8_t our_id_b; /* * PCI error detection. */ int unsolicited_ints; /* * Target incoming command FIFO. */ struct target_cmd *targetcmds; uint8_t tqinfifonext; /* * Cached copy of the sequencer control register. */ uint8_t seqctl; /* * Incoming and outgoing message handling. */ uint8_t send_msg_perror; ahc_msg_type msg_type; uint8_t msgout_buf[12];/* Message we are sending */ uint8_t msgin_buf[12];/* Message we are receiving */ u_int msgout_len; /* Length of message to send */ u_int msgout_index; /* Current index in msgout */ u_int msgin_index; /* Current index in msgin */ /* * Mapping information for data structures shared * between the sequencer and kernel. */ bus_dma_tag_t parent_dmat; bus_dma_tag_t shared_data_dmat; bus_dmamap_t shared_data_dmamap; dma_addr_t shared_data_busaddr; /* * Bus address of the one byte buffer used to * work-around a DMA bug for chips <= aic7880 * in target mode. */ dma_addr_t dma_bug_buf; /* 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; /* * Count of parity errors we have seen as a target. * We auto-disable parity error checking after seeing * AHC_PCI_TARGET_PERR_THRESH number of errors. */ u_int pci_target_perr_count; #define AHC_PCI_TARGET_PERR_THRESH 10 /* Maximum number of sequencer instructions supported. */ u_int instruction_ram_size; /* Per-Unit descriptive information */ const char *description; char *name; int unit; /* Selection Timer settings */ int seltime; int seltime_b; uint16_t user_discenable;/* Disconnection allowed */ uint16_t user_tagenable;/* Tagged Queuing allowed */ }; /************************ Active Device Information ***************************/ typedef enum { ROLE_UNKNOWN, ROLE_INITIATOR, ROLE_TARGET } role_t; struct ahc_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 ********************************/ typedef int (ahc_device_setup_t)(struct ahc_softc *); struct ahc_pci_identity { uint64_t full_id; uint64_t id_mask; const char *name; ahc_device_setup_t *setup; }; /***************************** VL/EISA Declarations ***************************/ struct aic7770_identity { uint32_t full_id; uint32_t id_mask; const char *name; ahc_device_setup_t *setup; }; extern struct aic7770_identity aic7770_ident_table[]; extern const int ahc_num_aic7770_devs; #define AHC_EISA_SLOT_OFFSET 0xc00 #define AHC_EISA_IOSIZE 0x100 /*************************** Function Declarations ****************************/ /******************************************************************************/ /***************************** PCI Front End *********************************/ const struct ahc_pci_identity *ahc_find_pci_device(ahc_dev_softc_t); int ahc_pci_config(struct ahc_softc *, const struct ahc_pci_identity *); int ahc_pci_test_register_access(struct ahc_softc *); #ifdef CONFIG_PM void ahc_pci_resume(struct ahc_softc *ahc); #endif /*************************** EISA/VL Front End ********************************/ struct aic7770_identity *aic7770_find_device(uint32_t); int aic7770_config(struct ahc_softc *ahc, struct aic7770_identity *, u_int port); /************************** SCB and SCB queue management **********************/ int ahc_probe_scbs(struct ahc_softc *); void ahc_qinfifo_requeue_tail(struct ahc_softc *ahc, struct scb *scb); int ahc_match_scb(struct ahc_softc *ahc, struct scb *scb, int target, char channel, int lun, u_int tag, role_t role); /****************************** Initialization ********************************/ struct ahc_softc *ahc_alloc(void *platform_arg, char *name); int ahc_softc_init(struct ahc_softc *); void ahc_controller_info(struct ahc_softc *ahc, char *buf); int ahc_chip_init(struct ahc_softc *ahc); int ahc_init(struct ahc_softc *ahc); void ahc_intr_enable(struct ahc_softc *ahc, int enable); void ahc_pause_and_flushwork(struct ahc_softc *ahc); #ifdef CONFIG_PM int ahc_suspend(struct ahc_softc *ahc); int ahc_resume(struct ahc_softc *ahc); #endif void ahc_set_unit(struct ahc_softc *, int); void ahc_set_name(struct ahc_softc *, char *); void ahc_free(struct ahc_softc *ahc); int ahc_reset(struct ahc_softc *ahc, int reinit); /***************************** Error Recovery *********************************/ typedef enum { SEARCH_COMPLETE, SEARCH_COUNT, SEARCH_REMOVE } ahc_search_action; int ahc_search_qinfifo(struct ahc_softc *ahc, int target, char channel, int lun, u_int tag, role_t role, uint32_t status, ahc_search_action action); int ahc_search_untagged_queues(struct ahc_softc *ahc, ahc_io_ctx_t ctx, int target, char channel, int lun, uint32_t status, ahc_search_action action); int ahc_search_disc_list(struct ahc_softc *ahc, int target, char channel, int lun, u_int tag, int stop_on_first, int remove, int save_state); int ahc_reset_channel(struct ahc_softc *ahc, char channel, int initiate_reset); /*************************** Utility Functions ********************************/ void ahc_compile_devinfo(struct ahc_devinfo *devinfo, u_int our_id, u_int target, u_int lun, char channel, role_t role); /************************** Transfer Negotiation ******************************/ const struct ahc_syncrate* ahc_find_syncrate(struct ahc_softc *ahc, u_int *period, u_int *ppr_options, u_int maxsync); u_int ahc_find_period(struct ahc_softc *ahc, u_int scsirate, 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 { AHC_NEG_TO_GOAL, /* Renegotiate only if goal and curr differ. */ AHC_NEG_IF_NON_ASYNC, /* Renegotiate so long as goal is non-async. */ AHC_NEG_ALWAYS /* Renegotiat even if goal is async. */ } ahc_neg_type; int ahc_update_neg_request(struct ahc_softc*, struct ahc_devinfo*, struct ahc_tmode_tstate*, struct ahc_initiator_tinfo*, ahc_neg_type); void ahc_set_width(struct ahc_softc *ahc, struct ahc_devinfo *devinfo, u_int width, u_int type, int paused); void ahc_set_syncrate(struct ahc_softc *ahc, struct ahc_devinfo *devinfo, const struct ahc_syncrate *syncrate, u_int period, u_int offset, u_int ppr_options, u_int type, int paused); typedef enum { AHC_QUEUE_NONE, AHC_QUEUE_BASIC, AHC_QUEUE_TAGGED } ahc_queue_alg; /**************************** Target Mode *************************************/ #ifdef AHC_TARGET_MODE void ahc_send_lstate_events(struct ahc_softc *, struct ahc_tmode_lstate *); void ahc_handle_en_lun(struct ahc_softc *ahc, struct cam_sim *sim, union ccb *ccb); cam_status ahc_find_tmode_devs(struct ahc_softc *ahc, struct cam_sim *sim, union ccb *ccb, struct ahc_tmode_tstate **tstate, struct ahc_tmode_lstate **lstate, int notfound_failure); #ifndef AHC_TMODE_ENABLE #define AHC_TMODE_ENABLE 0 #endif #endif /******************************* Debug ***************************************/ #ifdef AHC_DEBUG extern uint32_t ahc_debug; #define AHC_SHOW_MISC 0x0001 #define AHC_SHOW_SENSE 0x0002 #define AHC_DUMP_SEEPROM 0x0004 #define AHC_SHOW_TERMCTL 0x0008 #define AHC_SHOW_MEMORY 0x0010 #define AHC_SHOW_MESSAGES 0x0020 #define AHC_SHOW_DV 0x0040 #define AHC_SHOW_SELTO 0x0080 #define AHC_SHOW_QFULL 0x0200 #define AHC_SHOW_QUEUE 0x0400 #define AHC_SHOW_TQIN 0x0800 #define AHC_SHOW_MASKED_ERRORS 0x1000 #define AHC_DEBUG_SEQUENCER 0x2000 #endif void ahc_print_devinfo(struct ahc_softc *ahc, struct ahc_devinfo *dev); void ahc_dump_card_state(struct ahc_softc *ahc); int ahc_print_register(const ahc_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); /******************************* SEEPROM *************************************/ int ahc_acquire_seeprom(struct ahc_softc *ahc, struct seeprom_descriptor *sd); void ahc_release_seeprom(struct seeprom_descriptor *sd); #endif /* _AIC7XXX_H_ */
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