FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/aic7xxx_osm.h

     /*      $NetBSD: aic7xxx_osm.h,v 1.20 2008/04/08 12:07:25 cegger Exp $  */
     
     /*
      * NetBSD platform specific driver option settings, data structures,
      * function declarations and includes.
      *
      * Copyright (c) 1994-2001 Justin T. Gibbs.
      * 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. The name of the author may not 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 Public License ("GPL").
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
     * ANY DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE.
     *
     * //depot/aic7xxx/freebsd/dev/aic7xxx/aic7xxx_osm.h#14 $
     *
     * $FreeBSD: /repoman/r/ncvs/src/sys/dev/aic7xxx/aic7xxx_osm.h,v 1.20 2002/12/04 22:51:29 scottl Exp $
     */
    /*
     * Ported from FreeBSD by Pascal Renauld, Network Storage Solutions, Inc. - April 2003
     */
    
    #ifndef _AIC7XXX_NETBSD_H_
    #define _AIC7XXX_NETBSD_H_
    
    #include "opt_ahc.h"    /* for config options */
    
    #include <sys/param.h>
    #include <sys/kernel.h>
    #include <sys/systm.h>
    #include <sys/device.h>
    #include <sys/malloc.h>
    #include <sys/buf.h>
    #include <sys/proc.h>
    #include <sys/scsiio.h>
    #include <sys/reboot.h>
    #include <sys/kthread.h>
    
    #include <dev/pci/pcireg.h>
    #include <dev/pci/pcivar.h>
    
    #include <sys/bus.h>
    #include <sys/intr.h>
    
    #include <dev/scsipi/scsi_all.h>
    #include <dev/scsipi/scsipi_all.h>
    #include <dev/scsipi/scsi_message.h>
    #include <dev/scsipi/scsipi_debug.h>
    #include <dev/scsipi/scsiconf.h>
    #include <dev/scsipi/scsi_iu.h>
    
    #include <uvm/uvm_extern.h>
    
    #ifdef CAM_NEW_TRAN_CODE
    #define AHC_NEW_TRAN_SETTINGS
    #endif /* CAM_NEW_TRAN_CODE */
    
    
    /****************************** Platform Macros *******************************/
    #define SIM_IS_SCSIBUS_B(ahc, sim)      \
            ((sim) == ahc->platform_data->sim_b)
    #define SIM_CHANNEL(ahc, sim)   \
            (((sim) == ahc->platform_data->sim_b) ? 'B' : 'A')
    #define SIM_SCSI_ID(ahc, sim)   \
            (((sim) == ahc->platform_data->sim_b) ? ahc->our_id_b : ahc->our_id)
    #define SIM_PATH(ahc, sim)      \
            (((sim) == ahc->platform_data->sim_b) ? ahc->platform_data->path_b \
                                                  : ahc->platform_data->path)
    #define BUILD_SCSIID(ahc, sim, target_id, our_id) \
            ((((target_id) << TID_SHIFT) & TID) | (our_id))
    
    #define SCB_GET_SIM(ahc, scb) \
            (SCB_GET_CHANNEL(ahc, scb) == 'A' ? (ahc)->platform_data->sim \
                                              : (ahc)->platform_data->sim_b)
    
    #ifndef offsetof
    #define offsetof(type, member)  ((size_t)(&((type *)0)->member))
    #endif
    /************************* Forward Declarations *******************************/
    typedef pcireg_t ahc_dev_softc_t;
   
   /***************************** Bus Space/DMA **********************************/
   #define ahc_dma_tag_create(ahc, parent_tag, alignment, boundary,        \
                              lowaddr, highaddr, filter, filterarg,        \
                              maxsize, nsegments, maxsegsz, flags,         \
                              dma_tagp)                                    \
           bus_dma_tag_create(parent_tag, alignment, boundary,             \
                              lowaddr, highaddr, filter, filterarg,        \
                              maxsize, nsegments, maxsegsz, flags,         \
                              dma_tagp)
   
   #define ahc_dma_tag_destroy(ahc, tag)                                   \
           bus_dma_tag_destroy(tag)
   
   #define ahc_dmamem_alloc(ahc, dmat, vaddr, flags, mapp)                 \
           bus_dmamem_alloc(dmat, vaddr, flags, mapp)
   
   #define ahc_dmamem_free(ahc, dmat, vaddr, map)                          \
           bus_dmamem_free(dmat, vaddr, map)
   
   #define ahc_dmamap_create(ahc, tag, flags, mapp)                        \
           bus_dmamap_create(tag, flags, mapp)
   
   #define ahc_dmamap_destroy(ahc, tag, map)                               \
           bus_dmamap_destroy(tag, map)
   
   #define ahc_dmamap_load(ahc, dmat, map, addr, buflen, callback,         \
                           callback_arg, flags)                            \
           bus_dmamap_load(dmat, map, addr, buflen, callback, callback_arg, flags)
   
   #define ahc_dmamap_unload(ahc, tag, map)                                \
           bus_dmamap_unload(tag, map)
   
   /* XXX Need to update Bus DMA for partial map syncs */
   #define ahc_dmamap_sync(ahc, dma_tag, dmamap, offset, len, op)          \
           bus_dmamap_sync(dma_tag, dmamap, offset, len, op)
   
   /************************ Tunable Driver Parameters  **************************/
   /*
    * The number of DMA segments supported.  The sequencer can handle any number
    * of physically contiguous S/G entrys.  To reduce the driver's memory
    * consumption, we limit the number supported to be sufficient to handle
    * the largest mapping supported by the kernel, MAXPHYS.  Assuming the
    * transfer is as fragmented as possible and unaligned, this turns out to
    * be the number of paged sized transfers in MAXPHYS plus an extra element
    * to handle any unaligned residual.  The sequencer fetches SG elements
    * in cacheline sized chucks, so make the number per-transaction an even
    * multiple of 16 which should align us on even the largest of cacheline
    * boundaries.
    */
   #define AHC_NSEG (roundup(btoc(MAXPHYS) + 1, 16))
   
   /* This driver supports target mode */
   //#define AHC_TARGET_MODE 1
   
   /************************** Softc/SCB Platform Data ***************************/
   struct ahc_platform_data {
           /*
            * Hooks into the XPT.
            */
   #if 0
           struct  cam_sim         *sim;
           struct  cam_sim         *sim_b;
           struct  cam_path        *path;
           struct  cam_path        *path_b;
   
           int                      regs_res_type;
           int                      regs_res_id;
           int                      irq_res_type;
           struct resource         *regs;
           struct resource         *irq;
           void                    *ih;
           eventhandler_tag         eh;
   #endif
   };
   
   struct scb_platform_data {
   };
   
   /********************************* Byte Order *********************************/
   #define ahc_htobe16(x) htobe16(x)
   #define ahc_htobe32(x) htobe32(x)
   #define ahc_htobe64(x) htobe64(x)
   #define ahc_htole16(x) htole16(x)
   #define ahc_htole32(x) htole32(x)
   #define ahc_htole64(x) htole64(x)
   
   #define ahc_be16toh(x) be16toh(x)
   #define ahc_be32toh(x) be32toh(x)
   #define ahc_be64toh(x) be64toh(x)
   #define ahc_le16toh(x) le16toh(x)
   #define ahc_le32toh(x) le32toh(x)
   #define ahc_le64toh(x) le64toh(x)
   
   /************************** Timer DataStructures ******************************/
   typedef struct callout ahc_timer_t;
   
   /***************************** Core Includes **********************************/
   #if AHC_REG_PRETTY_PRINT
   #define AIC_DEBUG_REGISTERS 1
   #else
   #define AIC_DEBUG_REGISTERS 0
   #endif
   
   #include <dev/ic/aic7xxxvar.h>
   
   /***************************** Timer Facilities *******************************/
   void ahc_timeout(void*);
   
   #define ahc_timer_init(x) callout_init(x, 0)
   #define ahc_timer_stop callout_stop
   
   static __inline void
   ahc_timer_reset(ahc_timer_t *timer, u_int usec, ahc_callback_t *func, void *arg)
   {
           callout_reset(timer, (usec * hz)/1000000, func, arg);
   }
   
   static __inline void
   ahc_scb_timer_reset(struct scb *scb, u_int usec)
   {
           if (!(scb->xs->xs_control & XS_CTL_POLL)) {
                   callout_reset(&scb->xs->xs_callout,
                                 (usec * hz)/1000000, ahc_timeout, scb);
           }
   }
   
   /*************************** Device Access ************************************/
   #define ahc_inb(ahc, port)                              \
           bus_space_read_1((ahc)->tag, (ahc)->bsh, port)
   
   #define ahc_outb(ahc, port, value)                      \
           bus_space_write_1((ahc)->tag, (ahc)->bsh, port, value)
   
   #define ahc_outsb(ahc, port, valp, count)               \
           bus_space_write_multi_1((ahc)->tag, (ahc)->bsh, port, valp, count)
   
   #define ahc_insb(ahc, port, valp, count)                \
           bus_space_read_multi_1((ahc)->tag, (ahc)->bsh, port, valp, count)
   
   static __inline void ahc_flush_device_writes(struct ahc_softc *);
   
   static __inline void
   ahc_flush_device_writes(struct ahc_softc *ahc)
   {
           /* XXX Is this sufficient for all architectures??? */
           (void)ahc_inb(ahc, INTSTAT);
   }
   
   /**************************** Locking Primitives ******************************/
   /* Lock protecting internal data structures */
   static __inline void ahc_lockinit(struct ahc_softc *);
   static __inline void ahc_lock(struct ahc_softc *, unsigned long *);
   static __inline void ahc_unlock(struct ahc_softc *, unsigned long *);
   
   /* Lock held during command completion to the upper layer */
   static __inline void ahc_done_lockinit(struct ahc_softc *);
   static __inline void ahc_done_lock(struct ahc_softc *, unsigned long *);
   static __inline void ahc_done_unlock(struct ahc_softc *, unsigned long *);
   
   /* Lock held during ahc_list manipulation and ahc softc frees */
   static __inline void ahc_list_lockinit(void);
   static __inline void ahc_list_lock(unsigned long *);
   static __inline void ahc_list_unlock(unsigned long *);
   
   static __inline void
   ahc_lockinit(struct ahc_softc *ahc)
   {
   }
   
   static __inline void
   ahc_lock(struct ahc_softc *ahc, unsigned long *flags)
   {
           *flags = splbio();
   }
   
   static __inline void
   ahc_unlock(struct ahc_softc *ahc, unsigned long *flags)
   {
           splx(*flags);
   }
   
   /* Lock held during command completion to the upper layer */
   static __inline void
   ahc_done_lockinit(struct ahc_softc *ahc)
   {
   }
   
   static __inline void
   ahc_done_lock(struct ahc_softc *ahc, unsigned long *flags)
   {
   }
   
   static __inline void
   ahc_done_unlock(struct ahc_softc *ahc, unsigned long *flags)
   {
   }
   
   /* Lock held during ahc_list manipulation and ahc softc frees */
   static __inline void
   ahc_list_lockinit()
   {
   }
   
   static __inline void
   ahc_list_lock(unsigned long *flags)
   {
   }
   
   static __inline void
   ahc_list_unlock(unsigned long *flags)
   {
   }
   /****************************** OS Primitives *********************************/
   #define ahc_delay DELAY
   
   /************************** Transaction Operations ****************************/
   static __inline void ahc_set_transaction_status(struct scb *, uint32_t);
   static __inline void ahc_set_scsi_status(struct scb *, uint32_t);
   static __inline uint32_t ahc_get_transaction_status(struct scb *);
   static __inline uint32_t ahc_get_scsi_status(struct scb *);
   static __inline void ahc_set_transaction_tag(struct scb *, int, u_int);
   static __inline u_long ahc_get_transfer_length(struct scb *);
   static __inline int ahc_get_transfer_dir(struct scb *);
   static __inline void ahc_set_residual(struct scb *, u_long);
   static __inline void ahc_set_sense_residual(struct scb *, u_long);
   static __inline u_long ahc_get_residual(struct scb *);
   static __inline int ahc_perform_autosense(struct scb *);
   static __inline uint32_t ahc_get_sense_bufsize(struct ahc_softc *,
       struct scb *);
   static __inline void ahc_freeze_scb(struct scb *);
   static __inline void ahc_platform_freeze_devq(struct ahc_softc *, struct scb *);
   static __inline int  ahc_platform_abort_scbs(struct ahc_softc *, int, char,
       int, u_int, role_t, uint32_t);
   
   static __inline
   void ahc_set_transaction_status(struct scb *scb, uint32_t status)
   {
           scb->xs->error = status;
   }
   
   static __inline
   void ahc_set_scsi_status(struct scb *scb, uint32_t status)
   {
           scb->xs->xs_status = status;
   }
   
   static __inline
   uint32_t ahc_get_transaction_status(struct scb *scb)
   {
           return (scb->xs->error);
   }
   
   static __inline
   uint32_t ahc_get_scsi_status(struct scb *scb)
   {
           return (scb->xs->xs_status);
   }
   
   static __inline
   void ahc_set_transaction_tag(struct scb *scb, int enabled, u_int type)
   {
           scb->xs->xs_tag_type = type;
   }
   
   static __inline
   u_long ahc_get_transfer_length(struct scb *scb)
   {
           return (scb->xs->datalen);
   }
   
   static __inline
   int ahc_get_transfer_dir(struct scb *scb)
   {
           return (scb->xs->xs_control & (XS_CTL_DATA_IN|XS_CTL_DATA_OUT));
   }
   
   static __inline
   void ahc_set_residual(struct scb *scb, u_long resid)
   {
           scb->xs->resid = resid;
   }
   
   static __inline
   void ahc_set_sense_residual(struct scb *scb, u_long resid)
   {
   #ifdef notdef
       scb->io_ctx->csio.sense_resid = resid;
   #endif
   }
   
   static __inline
   u_long ahc_get_residual(struct scb *scb)
   {
           return (scb->xs->resid);
   }
   
   static __inline
   int ahc_perform_autosense(struct scb *scb)
   {
           return (!(scb->flags & SCB_SENSE));
   }
   
   static __inline uint32_t
   ahc_get_sense_bufsize(struct ahc_softc *ahc, struct scb *scb)
   {
           return (sizeof(struct scsi_sense_data));
   }
   
   static __inline void
   ahc_freeze_scb(struct scb *scb)
   {
           struct scsipi_xfer *xs = scb->xs;
   
           if (!(scb->flags & SCB_FREEZE_QUEUE)) {
                   scsipi_periph_freeze(xs->xs_periph, 1);
                   scb->flags |= SCB_FREEZE_QUEUE;
           }
   }
   
   static __inline void
   ahc_platform_freeze_devq(struct ahc_softc *ahc, struct scb *scb)
   {
   }
   
   static __inline int
   ahc_platform_abort_scbs(struct ahc_softc *ahc, int target,
       char channel, int lun, u_int tag,
       role_t role, uint32_t status)
   {
           return (0);
   }
   
   static __inline void
   ahc_platform_scb_free(struct ahc_softc *ahc, struct scb *scb)
   {
   #ifdef __FreeBSD__
           /* What do we do to generically handle driver resource shortages??? */
           if ((ahc->flags & AHC_RESOURCE_SHORTAGE) != 0
            && scb->io_ctx != NULL
            && (scb->io_ctx->ccb_h.status & CAM_RELEASE_SIMQ) == 0) {
                   scb->io_ctx->ccb_h.status |= CAM_RELEASE_SIMQ;
                   ahc->flags &= ~AHC_RESOURCE_SHORTAGE;
           }
           scb->io_ctx = NULL;
   #endif
   }
   
   /********************************** PCI ***************************************/
   #ifdef AHC_PCI_CONFIG
   static __inline uint32_t ahc_pci_read_config(ahc_dev_softc_t, int, int);
   static __inline void     ahc_pci_write_config(ahc_dev_softc_t, int, uint32_t,
       int);
   static __inline int      ahc_get_pci_function(ahc_dev_softc_t);
   static __inline int      ahc_get_pci_slot(ahc_dev_softc_t);
   static __inline int      ahc_get_pci_bus(ahc_dev_softc_t);
   
   int                      ahc_pci_map_registers(struct ahc_softc *);
   int                      ahc_pci_map_int(struct ahc_softc *);
   
   static __inline uint32_t
   ahc_pci_read_config(ahc_dev_softc_t pci, int reg, int width)
   {
           return (pci_read_config(pci, reg, width));
   }
   
   static __inline void
   ahc_pci_write_config(ahc_dev_softc_t pci, int reg, uint32_t value, int width)
   {
           pci_write_config(pci, reg, value, width);
   }
   
   static __inline int
   ahc_get_pci_function(ahc_dev_softc_t pci)
   {
           return (pci_get_function(pci));
   }
   
   static __inline int
   ahc_get_pci_slot(ahc_dev_softc_t pci)
   {
           return (pci_get_slot(pci));
   }
   
   static __inline int
   ahc_get_pci_bus(ahc_dev_softc_t pci)
   {
           return (pci_get_bus(pci));
   }
   
   typedef enum
   {
           AHC_POWER_STATE_D0,
           AHC_POWER_STATE_D1,
           AHC_POWER_STATE_D2,
           AHC_POWER_STATE_D3
   } ahc_power_state;
   
   void ahc_power_state_change(struct ahc_softc *, ahc_power_state);
   #endif
   /******************************** VL/EISA *************************************/
   int aic7770_map_registers(struct ahc_softc *, u_int);
   int aic7770_map_int(struct ahc_softc *, int);
   
   /********************************* Debug **************************************/
   static __inline void    ahc_print_path(struct ahc_softc *, struct scb *);
   static __inline void    ahc_platform_dump_card_state(struct ahc_softc *);
   
   static __inline void
   ahc_print_path(struct ahc_softc *ahc, struct scb *scb)
   {
           printf("%s:", device_xname(&ahc->sc_dev));
   }
   
   static __inline void
   ahc_platform_dump_card_state(struct ahc_softc *ahc)
   {
   }
   /**************************** Transfer Settings *******************************/
   void      ahc_notify_xfer_settings_change(struct ahc_softc *,
                                             struct ahc_devinfo *);
   void      ahc_platform_set_tags(struct ahc_softc *, struct ahc_devinfo *, int);
   
   /************************* Initialization/Teardown ****************************/
   int       ahc_platform_alloc(struct ahc_softc *, void *);
   void      ahc_platform_free(struct ahc_softc *);
   int       ahc_map_int(struct ahc_softc *);
   int       ahc_attach(struct ahc_softc *);
   int       ahc_softc_comp(struct ahc_softc *, struct ahc_softc *);
   int       ahc_detach(struct device *, int);
   
   /****************************** Interrupts ************************************/
   void                    ahc_platform_intr(void *);
   static __inline void    ahc_platform_flushwork(struct ahc_softc *);
   static __inline void
   ahc_platform_flushwork(struct ahc_softc *ahc)
   {
   }
   
   /************************ Misc Function Declarations **************************/
   void      ahc_done(struct ahc_softc *, struct scb *);
   void      ahc_send_async(struct ahc_softc *, char, u_int, u_int, ac_code,
       void *);
   #endif  /* _AIC7XXX_NETBSD_H_ */

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