scsi/aic7xxx/aic79xx_osm.h

0001 /*
0002  * Adaptec AIC79xx device driver for Linux.
0003  *
0004  * Copyright (c) 2000-2001 Adaptec Inc.
0005  * All rights reserved.
0006  *
0007  * Redistribution and use in source and binary forms, with or without
0008  * modification, are permitted provided that the following conditions
0009  * are met:
0010  * 1. Redistributions of source code must retain the above copyright
0011  *    notice, this list of conditions, and the following disclaimer,
0012  *    without modification.
0013  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
0014  *    substantially similar to the "NO WARRANTY" disclaimer below
0015  *    ("Disclaimer") and any redistribution must be conditioned upon
0016  *    including a substantially similar Disclaimer requirement for further
0017  *    binary redistribution.
0018  * 3. Neither the names of the above-listed copyright holders nor the names
0019  *    of any contributors may be used to endorse or promote products derived
0020  *    from this software without specific prior written permission.
0021  *
0022  * Alternatively, this software may be distributed under the terms of the
0023  * GNU General Public License ("GPL") version 2 as published by the Free
0024  * Software Foundation.
0025  *
0026  * NO WARRANTY
0027  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
0028  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
0029  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
0030  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
0031  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
0032  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
0033  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
0034  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
0035  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
0036  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0037  * POSSIBILITY OF SUCH DAMAGES.
0038  *
0039  * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_osm.h#166 $
0040  *
0041  */
0042 #ifndef _AIC79XX_LINUX_H_
0043 #define _AIC79XX_LINUX_H_
0044
0045 #include <linux/types.h>
0046 #include <linux/blkdev.h>
0047 #include <linux/delay.h>
0048 #include <linux/ioport.h>
0049 #include <linux/pci.h>
0050 #include <linux/interrupt.h>
0051 #include <linux/module.h>
0052 #include <linux/slab.h>
0053 #include <asm/byteorder.h>
0054 #include <asm/io.h>
0055
0056 #include <scsi/scsi.h>
0057 #include <scsi/scsi_cmnd.h>
0058 #include <scsi/scsi_eh.h>
0059 #include <scsi/scsi_device.h>
0060 #include <scsi/scsi_host.h>
0061 #include <scsi/scsi_tcq.h>
0062 #include <scsi/scsi_transport.h>
0063 #include <scsi/scsi_transport_spi.h>
0064
0065 /* Core SCSI definitions */
0066 #define AIC_LIB_PREFIX ahd
0067
0068 #include "cam.h"
0069 #include "queue.h"
0070 #include "scsi_message.h"
0071 #include "scsi_iu.h"
0072 #include "aiclib.h"
0073
0074 /*********************************** Debugging ********************************/
0075 #ifdef CONFIG_AIC79XX_DEBUG_ENABLE
0076 #ifdef CONFIG_AIC79XX_DEBUG_MASK
0077 #define AHD_DEBUG 1
0078 #define AHD_DEBUG_OPTS CONFIG_AIC79XX_DEBUG_MASK
0079 #else
0080 /*
0081  * Compile in debugging code, but do not enable any printfs.
0082  */
0083 #define AHD_DEBUG 1
0084 #define AHD_DEBUG_OPTS 0
0085 #endif
0086 /* No debugging code. */
0087 #endif
0088
0089 /********************************** Misc Macros *******************************/
0090 #define powerof2(x) ((((x)-1)&(x))==0)
0091
0092 /************************* Forward Declarations *******************************/
0093 struct ahd_softc;
0094 typedef struct pci_dev *ahd_dev_softc_t;
0095 typedef struct scsi_cmnd      *ahd_io_ctx_t;
0096
0097 /******************************* Byte Order ***********************************/
0098 #define ahd_htobe16(x)  cpu_to_be16(x)
0099 #define ahd_htobe32(x)  cpu_to_be32(x)
0100 #define ahd_htobe64(x)  cpu_to_be64(x)
0101 #define ahd_htole16(x)  cpu_to_le16(x)
0102 #define ahd_htole32(x)  cpu_to_le32(x)
0103 #define ahd_htole64(x)  cpu_to_le64(x)
0104
0105 #define ahd_be16toh(x)  be16_to_cpu(x)
0106 #define ahd_be32toh(x)  be32_to_cpu(x)
0107 #define ahd_be64toh(x)  be64_to_cpu(x)
0108 #define ahd_le16toh(x)  le16_to_cpu(x)
0109 #define ahd_le32toh(x)  le32_to_cpu(x)
0110 #define ahd_le64toh(x)  le64_to_cpu(x)
0111
0112 /************************* Configuration Data *********************************/
0113 extern uint32_t aic79xx_allow_memio;
0114 extern struct scsi_host_template aic79xx_driver_template;
0115
0116 /***************************** Bus Space/DMA **********************************/
0117
0118 typedef uint32_t bus_size_t;
0119
0120 typedef enum {
0121     BUS_SPACE_MEMIO,
0122     BUS_SPACE_PIO
0123 } bus_space_tag_t;
0124
0125 typedef union {
0126     u_long        ioport;
0127     volatile uint8_t __iomem *maddr;
0128 } bus_space_handle_t;
0129
0130 typedef struct bus_dma_segment
0131 {
0132     dma_addr_t  ds_addr;
0133     bus_size_t  ds_len;
0134 } bus_dma_segment_t;
0135
0136 struct ahd_linux_dma_tag
0137 {
0138     bus_size_t  alignment;
0139     bus_size_t  boundary;
0140     bus_size_t  maxsize;
0141 };
0142 typedef struct ahd_linux_dma_tag* bus_dma_tag_t;
0143
0144 typedef dma_addr_t bus_dmamap_t;
0145
0146 typedef int bus_dma_filter_t(void*, dma_addr_t);
0147 typedef void bus_dmamap_callback_t(void *, bus_dma_segment_t *, int, int);
0148
0149 #define BUS_DMA_WAITOK      0x0
0150 #define BUS_DMA_NOWAIT      0x1
0151 #define BUS_DMA_ALLOCNOW    0x2
0152 #define BUS_DMA_LOAD_SEGS   0x4 /*
0153                      * Argument is an S/G list not
0154                      * a single buffer.
0155                      */
0156
0157 #define BUS_SPACE_MAXADDR   0xFFFFFFFF
0158 #define BUS_SPACE_MAXADDR_32BIT 0xFFFFFFFF
0159 #define BUS_SPACE_MAXSIZE_32BIT 0xFFFFFFFF
0160
0161 int ahd_dma_tag_create(struct ahd_softc *, bus_dma_tag_t /*parent*/,
0162                bus_size_t /*alignment*/, bus_size_t /*boundary*/,
0163                dma_addr_t /*lowaddr*/, dma_addr_t /*highaddr*/,
0164                bus_dma_filter_t*/*filter*/, void */*filterarg*/,
0165                bus_size_t /*maxsize*/, int /*nsegments*/,
0166                bus_size_t /*maxsegsz*/, int /*flags*/,
0167                bus_dma_tag_t */*dma_tagp*/);
0168
0169 void    ahd_dma_tag_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/);
0170
0171 int ahd_dmamem_alloc(struct ahd_softc *, bus_dma_tag_t /*dmat*/,
0172              void** /*vaddr*/, int /*flags*/,
0173              bus_dmamap_t* /*mapp*/);
0174
0175 void    ahd_dmamem_free(struct ahd_softc *, bus_dma_tag_t /*dmat*/,
0176             void* /*vaddr*/, bus_dmamap_t /*map*/);
0177
0178 void    ahd_dmamap_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/,
0179                bus_dmamap_t /*map*/);
0180
0181 int ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t /*dmat*/,
0182             bus_dmamap_t /*map*/, void * /*buf*/,
0183             bus_size_t /*buflen*/, bus_dmamap_callback_t *,
0184             void */*callback_arg*/, int /*flags*/);
0185
0186 int ahd_dmamap_unload(struct ahd_softc *, bus_dma_tag_t, bus_dmamap_t);
0187
0188 /*
0189  * Operations performed by ahd_dmamap_sync().
0190  */
0191 #define BUS_DMASYNC_PREREAD 0x01    /* pre-read synchronization */
0192 #define BUS_DMASYNC_POSTREAD    0x02    /* post-read synchronization */
0193 #define BUS_DMASYNC_PREWRITE    0x04    /* pre-write synchronization */
0194 #define BUS_DMASYNC_POSTWRITE   0x08    /* post-write synchronization */
0195
0196 /*
0197  * XXX
0198  * ahd_dmamap_sync is only used on buffers allocated with
0199  * the dma_alloc_coherent() API.  Although I'm not sure how
0200  * this works on architectures with a write buffer, Linux does
0201  * not have an API to sync "coherent" memory.  Perhaps we need
0202  * to do an mb()?
0203  */
0204 #define ahd_dmamap_sync(ahd, dma_tag, dmamap, offset, len, op)
0205
0206 /********************************** Includes **********************************/
0207 #ifdef CONFIG_AIC79XX_REG_PRETTY_PRINT
0208 #define AIC_DEBUG_REGISTERS 1
0209 #else
0210 #define AIC_DEBUG_REGISTERS 0
0211 #endif
0212 #include "aic79xx.h"
0213
0214 /***************************** SMP support ************************************/
0215 #include <linux/spinlock.h>
0216
0217 #define AIC79XX_DRIVER_VERSION "3.0"
0218
0219 /*************************** Device Data Structures ***************************/
0220 /*
0221  * A per probed device structure used to deal with some error recovery
0222  * scenarios that the Linux mid-layer code just doesn't know how to
0223  * handle.  The structure allocated for a device only becomes persistent
0224  * after a successfully completed inquiry command to the target when
0225  * that inquiry data indicates a lun is present.
0226  */
0227
0228 typedef enum {
0229     AHD_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */
0230     AHD_DEV_Q_BASIC      = 0x10, /* Allow basic device queuing */
0231     AHD_DEV_Q_TAGGED     = 0x20, /* Allow full SCSI2 command queueing */
0232     AHD_DEV_PERIODIC_OTAG    = 0x40, /* Send OTAG to prevent starvation */
0233 } ahd_linux_dev_flags;
0234
0235 struct ahd_linux_device {
0236     TAILQ_ENTRY(ahd_linux_device) links;
0237
0238     /*
0239      * The number of transactions currently
0240      * queued to the device.
0241      */
0242     int         active;
0243
0244     /*
0245      * The currently allowed number of
0246      * transactions that can be queued to
0247      * the device.  Must be signed for
0248      * conversion from tagged to untagged
0249      * mode where the device may have more
0250      * than one outstanding active transaction.
0251      */
0252     int         openings;
0253
0254     /*
0255      * A positive count indicates that this
0256      * device's queue is halted.
0257      */
0258     u_int           qfrozen;
0259
0260     /*
0261      * Cumulative command counter.
0262      */
0263     u_long          commands_issued;
0264
0265     /*
0266      * The number of tagged transactions when
0267      * running at our current opening level
0268      * that have been successfully received by
0269      * this device since the last QUEUE FULL.
0270      */
0271     u_int           tag_success_count;
0272 #define AHD_TAG_SUCCESS_INTERVAL 50
0273
0274     ahd_linux_dev_flags flags;
0275
0276     /*
0277      * Per device timer.
0278      */
0279     struct timer_list   timer;
0280
0281     /*
0282      * The high limit for the tags variable.
0283      */
0284     u_int           maxtags;
0285
0286     /*
0287      * The computed number of tags outstanding
0288      * at the time of the last QUEUE FULL event.
0289      */
0290     u_int           tags_on_last_queuefull;
0291
0292     /*
0293      * How many times we have seen a queue full
0294      * with the same number of tags.  This is used
0295      * to stop our adaptive queue depth algorithm
0296      * on devices with a fixed number of tags.
0297      */
0298     u_int           last_queuefull_same_count;
0299 #define AHD_LOCK_TAGS_COUNT 50
0300
0301     /*
0302      * How many transactions have been queued
0303      * without the device going idle.  We use
0304      * this statistic to determine when to issue
0305      * an ordered tag to prevent transaction
0306      * starvation.  This statistic is only updated
0307      * if the AHD_DEV_PERIODIC_OTAG flag is set
0308      * on this device.
0309      */
0310     u_int           commands_since_idle_or_otag;
0311 #define AHD_OTAG_THRESH 500
0312 };
0313
0314 /********************* Definitions Required by the Core ***********************/
0315 /*
0316  * Number of SG segments we require.  So long as the S/G segments for
0317  * a particular transaction are allocated in a physically contiguous
0318  * manner and are allocated below 4GB, the number of S/G segments is
0319  * unrestricted.
0320  */
0321 #define AHD_NSEG 128
0322
0323 /*
0324  * Per-SCB OSM storage.
0325  */
0326 struct scb_platform_data {
0327     struct ahd_linux_device *dev;
0328     dma_addr_t       buf_busaddr;
0329     uint32_t         xfer_len;
0330     uint32_t         sense_resid;   /* Auto-Sense residual */
0331 };
0332
0333 /*
0334  * Define a structure used for each host adapter.  All members are
0335  * aligned on a boundary >= the size of the member to honor the
0336  * alignment restrictions of the various platforms supported by
0337  * this driver.
0338  */
0339 struct ahd_platform_data {
0340     /*
0341      * Fields accessed from interrupt context.
0342      */
0343     struct scsi_target *starget[AHD_NUM_TARGETS];
0344
0345     spinlock_t       spin_lock;
0346     struct completion   *eh_done;
0347     struct Scsi_Host    *host;      /* pointer to scsi host */
0348 #define AHD_LINUX_NOIRQ ((uint32_t)~0)
0349     uint32_t         irq;       /* IRQ for this adapter */
0350     uint32_t         bios_address;
0351     resource_size_t      mem_busaddr;   /* Mem Base Addr */
0352 };
0353
0354 void ahd_delay(long);
0355
0356 /***************************** Low Level I/O **********************************/
0357 uint8_t ahd_inb(struct ahd_softc * ahd, long port);
0358 void ahd_outb(struct ahd_softc * ahd, long port, uint8_t val);
0359 void ahd_outw_atomic(struct ahd_softc * ahd,
0360                      long port, uint16_t val);
0361 void ahd_outsb(struct ahd_softc * ahd, long port,
0362                    uint8_t *, int count);
0363 void ahd_insb(struct ahd_softc * ahd, long port,
0364                    uint8_t *, int count);
0365
0366 /**************************** Initialization **********************************/
0367 int     ahd_linux_register_host(struct ahd_softc *,
0368                     struct scsi_host_template *);
0369
0370 /******************************** Locking *************************************/
0371 static inline void
0372 ahd_lockinit(struct ahd_softc *ahd)
0373 {
0374     spin_lock_init(&ahd->platform_data->spin_lock);
0375 }
0376
0377 static inline void
0378 ahd_lock(struct ahd_softc *ahd, unsigned long *flags)
0379 {
0380     spin_lock_irqsave(&ahd->platform_data->spin_lock, *flags);
0381 }
0382
0383 static inline void
0384 ahd_unlock(struct ahd_softc *ahd, unsigned long *flags)
0385 {
0386     spin_unlock_irqrestore(&ahd->platform_data->spin_lock, *flags);
0387 }
0388
0389 /******************************* PCI Definitions ******************************/
0390 /*
0391  * PCIM_xxx: mask to locate subfield in register
0392  * PCIR_xxx: config register offset
0393  * PCIC_xxx: device class
0394  * PCIS_xxx: device subclass
0395  * PCIP_xxx: device programming interface
0396  * PCIV_xxx: PCI vendor ID (only required to fixup ancient devices)
0397  * PCID_xxx: device ID
0398  */
0399 #define PCIR_DEVVENDOR      0x00
0400 #define PCIR_VENDOR     0x00
0401 #define PCIR_DEVICE     0x02
0402 #define PCIR_COMMAND        0x04
0403 #define PCIM_CMD_PORTEN     0x0001
0404 #define PCIM_CMD_MEMEN      0x0002
0405 #define PCIM_CMD_BUSMASTEREN    0x0004
0406 #define PCIM_CMD_MWRICEN    0x0010
0407 #define PCIM_CMD_PERRESPEN  0x0040
0408 #define PCIM_CMD_SERRESPEN  0x0100
0409 #define PCIR_STATUS     0x06
0410 #define PCIR_REVID      0x08
0411 #define PCIR_PROGIF     0x09
0412 #define PCIR_SUBCLASS       0x0a
0413 #define PCIR_CLASS      0x0b
0414 #define PCIR_CACHELNSZ      0x0c
0415 #define PCIR_LATTIMER       0x0d
0416 #define PCIR_HEADERTYPE     0x0e
0417 #define PCIM_MFDEV      0x80
0418 #define PCIR_BIST       0x0f
0419 #define PCIR_CAP_PTR        0x34
0420
0421 /* config registers for header type 0 devices */
0422 #define PCIR_MAPS   0x10
0423
0424 /****************************** PCI-X definitions *****************************/
0425 #define PCIXR_COMMAND   0x96
0426 #define PCIXR_DEVADDR   0x98
0427 #define PCIXM_DEVADDR_FNUM  0x0003  /* Function Number */
0428 #define PCIXM_DEVADDR_DNUM  0x00F8  /* Device Number */
0429 #define PCIXM_DEVADDR_BNUM  0xFF00  /* Bus Number */
0430 #define PCIXR_STATUS    0x9A
0431 #define PCIXM_STATUS_64BIT  0x0001  /* Active 64bit connection to device. */
0432 #define PCIXM_STATUS_133CAP 0x0002  /* Device is 133MHz capable */
0433 #define PCIXM_STATUS_SCDISC 0x0004  /* Split Completion Discarded */
0434 #define PCIXM_STATUS_UNEXPSC    0x0008  /* Unexpected Split Completion */
0435 #define PCIXM_STATUS_CMPLEXDEV  0x0010  /* Device Complexity (set == bridge) */
0436 #define PCIXM_STATUS_MAXMRDBC   0x0060  /* Maximum Burst Read Count */
0437 #define PCIXM_STATUS_MAXSPLITS  0x0380  /* Maximum Split Transactions */
0438 #define PCIXM_STATUS_MAXCRDS    0x1C00  /* Maximum Cumulative Read Size */
0439 #define PCIXM_STATUS_RCVDSCEM   0x2000  /* Received a Split Comp w/Error msg */
0440
0441 typedef enum
0442 {
0443     AHD_POWER_STATE_D0,
0444     AHD_POWER_STATE_D1,
0445     AHD_POWER_STATE_D2,
0446     AHD_POWER_STATE_D3
0447 } ahd_power_state;
0448
0449 void ahd_power_state_change(struct ahd_softc *ahd,
0450                 ahd_power_state new_state);
0451
0452 /******************************* PCI Routines *********************************/
0453 int          ahd_linux_pci_init(void);
0454 void             ahd_linux_pci_exit(void);
0455 int          ahd_pci_map_registers(struct ahd_softc *ahd);
0456 int          ahd_pci_map_int(struct ahd_softc *ahd);
0457
0458 uint32_t         ahd_pci_read_config(ahd_dev_softc_t pci,
0459                          int reg, int width);
0460 void             ahd_pci_write_config(ahd_dev_softc_t pci,
0461                       int reg, uint32_t value,
0462                       int width);
0463
0464 static inline int ahd_get_pci_function(ahd_dev_softc_t);
0465 static inline int
0466 ahd_get_pci_function(ahd_dev_softc_t pci)
0467 {
0468     return (PCI_FUNC(pci->devfn));
0469 }
0470
0471 static inline int ahd_get_pci_slot(ahd_dev_softc_t);
0472 static inline int
0473 ahd_get_pci_slot(ahd_dev_softc_t pci)
0474 {
0475     return (PCI_SLOT(pci->devfn));
0476 }
0477
0478 static inline int ahd_get_pci_bus(ahd_dev_softc_t);
0479 static inline int
0480 ahd_get_pci_bus(ahd_dev_softc_t pci)
0481 {
0482     return (pci->bus->number);
0483 }
0484
0485 static inline void ahd_flush_device_writes(struct ahd_softc *);
0486 static inline void
0487 ahd_flush_device_writes(struct ahd_softc *ahd)
0488 {
0489     /* XXX Is this sufficient for all architectures??? */
0490     ahd_inb(ahd, INTSTAT);
0491 }
0492
0493 /**************************** Proc FS Support *********************************/
0494 int ahd_proc_write_seeprom(struct Scsi_Host *, char *, int);
0495 int ahd_linux_show_info(struct seq_file *,struct Scsi_Host *);
0496
0497 /*********************** Transaction Access Wrappers **************************/
0498
0499 static inline
0500 void ahd_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status)
0501 {
0502     cmd->result &= ~(CAM_STATUS_MASK << 16);
0503     cmd->result |= status << 16;
0504 }
0505
0506 static inline
0507 void ahd_set_transaction_status(struct scb *scb, uint32_t status)
0508 {
0509     ahd_cmd_set_transaction_status(scb->io_ctx,status);
0510 }
0511
0512 static inline
0513 void ahd_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status)
0514 {
0515     cmd->result &= ~0xFFFF;
0516     cmd->result |= status;
0517 }
0518
0519 static inline
0520 void ahd_set_scsi_status(struct scb *scb, uint32_t status)
0521 {
0522     ahd_cmd_set_scsi_status(scb->io_ctx, status);
0523 }
0524
0525 static inline
0526 uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd)
0527 {
0528     return ((cmd->result >> 16) & CAM_STATUS_MASK);
0529 }
0530
0531 static inline
0532 uint32_t ahd_get_transaction_status(struct scb *scb)
0533 {
0534     return (ahd_cmd_get_transaction_status(scb->io_ctx));
0535 }
0536
0537 static inline
0538 uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd)
0539 {
0540     return (cmd->result & 0xFFFF);
0541 }
0542
0543 static inline
0544 uint32_t ahd_get_scsi_status(struct scb *scb)
0545 {
0546     return (ahd_cmd_get_scsi_status(scb->io_ctx));
0547 }
0548
0549 static inline
0550 void ahd_set_transaction_tag(struct scb *scb, int enabled, u_int type)
0551 {
0552     /*
0553      * Nothing to do for linux as the incoming transaction
0554      * has no concept of tag/non tagged, etc.
0555      */
0556 }
0557
0558 static inline
0559 u_long ahd_get_transfer_length(struct scb *scb)
0560 {
0561     return (scb->platform_data->xfer_len);
0562 }
0563
0564 static inline
0565 int ahd_get_transfer_dir(struct scb *scb)
0566 {
0567     return (scb->io_ctx->sc_data_direction);
0568 }
0569
0570 static inline
0571 void ahd_set_residual(struct scb *scb, u_long resid)
0572 {
0573     scsi_set_resid(scb->io_ctx, resid);
0574 }
0575
0576 static inline
0577 void ahd_set_sense_residual(struct scb *scb, u_long resid)
0578 {
0579     scb->platform_data->sense_resid = resid;
0580 }
0581
0582 static inline
0583 u_long ahd_get_residual(struct scb *scb)
0584 {
0585     return scsi_get_resid(scb->io_ctx);
0586 }
0587
0588 static inline
0589 u_long ahd_get_sense_residual(struct scb *scb)
0590 {
0591     return (scb->platform_data->sense_resid);
0592 }
0593
0594 static inline
0595 int ahd_perform_autosense(struct scb *scb)
0596 {
0597     /*
0598      * We always perform autosense in Linux.
0599      * On other platforms this is set on a
0600      * per-transaction basis.
0601      */
0602     return (1);
0603 }
0604
0605 static inline uint32_t
0606 ahd_get_sense_bufsize(struct ahd_softc *ahd, struct scb *scb)
0607 {
0608     return (sizeof(struct scsi_sense_data));
0609 }
0610
0611 static inline void
0612 ahd_notify_xfer_settings_change(struct ahd_softc *ahd,
0613                 struct ahd_devinfo *devinfo)
0614 {
0615     /* Nothing to do here for linux */
0616 }
0617
0618 static inline void
0619 ahd_platform_scb_free(struct ahd_softc *ahd, struct scb *scb)
0620 {
0621     ahd->flags &= ~AHD_RESOURCE_SHORTAGE;
0622 }
0623
0624 int ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg);
0625 void    ahd_platform_free(struct ahd_softc *ahd);
0626 void    ahd_platform_init(struct ahd_softc *ahd);
0627 void    ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb);
0628
0629 static inline void
0630 ahd_freeze_scb(struct scb *scb)
0631 {
0632     if ((scb->io_ctx->result & (CAM_DEV_QFRZN << 16)) == 0) {
0633         scb->io_ctx->result |= CAM_DEV_QFRZN << 16;
0634         scb->platform_data->dev->qfrozen++;
0635     }
0636 }
0637
0638 void    ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev,
0639                   struct ahd_devinfo *devinfo, ahd_queue_alg);
0640 int ahd_platform_abort_scbs(struct ahd_softc *ahd, int target,
0641                 char channel, int lun, u_int tag,
0642                 role_t role, uint32_t status);
0643 irqreturn_t
0644     ahd_linux_isr(int irq, void *dev_id);
0645 void    ahd_done(struct ahd_softc*, struct scb*);
0646 void    ahd_send_async(struct ahd_softc *, char channel,
0647                u_int target, u_int lun, ac_code);
0648 void    ahd_print_path(struct ahd_softc *, struct scb *);
0649
0650 #ifdef CONFIG_PCI
0651 #define AHD_PCI_CONFIG 1
0652 #else
0653 #define AHD_PCI_CONFIG 0
0654 #endif
0655 #define bootverbose aic79xx_verbose
0656 extern uint32_t aic79xx_verbose;
0657
0658 #endif /* _AIC79XX_LINUX_H_ */