316 lines
9.7 KiB
C
316 lines
9.7 KiB
C
/*-
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* FreeBSD platform specific driver option settings, data structures,
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* function declarations and includes.
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*
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* Copyright (c) 1994-2001 Justin T. Gibbs.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU Public License ("GPL").
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/aic7xxx_osm.h#18 $
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*
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* $FreeBSD$
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*/
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#ifndef _AIC7XXX_FREEBSD_H_
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#define _AIC7XXX_FREEBSD_H_
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#include <opt_aic7xxx.h> /* for config options */
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h> /* For device_t */
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#if __FreeBSD_version >= 500000
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#include <sys/endian.h>
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#endif
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#include <sys/eventhandler.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/queue.h>
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#if __FreeBSD_version < 500000
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#include <pci.h>
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#else
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#define NPCI 1
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#endif
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#if NPCI > 0
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#define AIC_PCI_CONFIG 1
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#endif
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#include <machine/bus.h>
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#include <machine/endian.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#if NPCI > 0
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#if __FreeBSD_version >= 500000
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#else
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#include <pci/pcireg.h>
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#include <pci/pcivar.h>
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#endif
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#endif
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#include <cam/cam.h>
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#include <cam/cam_ccb.h>
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#include <cam/cam_debug.h>
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#include <cam/cam_sim.h>
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#include <cam/cam_xpt_sim.h>
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#include <cam/scsi/scsi_all.h>
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#include <cam/scsi/scsi_message.h>
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/*************************** Attachment Bookkeeping ***************************/
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extern devclass_t ahc_devclass;
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/****************************** Platform Macros *******************************/
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#define SIM_IS_SCSIBUS_B(ahc, sim) \
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((sim) == ahc->platform_data->sim_b)
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#define SIM_CHANNEL(ahc, sim) \
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(((sim) == ahc->platform_data->sim_b) ? 'B' : 'A')
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#define SIM_SCSI_ID(ahc, sim) \
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(((sim) == ahc->platform_data->sim_b) ? ahc->our_id_b : ahc->our_id)
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#define SIM_PATH(ahc, sim) \
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(((sim) == ahc->platform_data->sim_b) ? ahc->platform_data->path_b \
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: ahc->platform_data->path)
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#define BUILD_SCSIID(ahc, sim, target_id, our_id) \
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((((target_id) << TID_SHIFT) & TID) | (our_id) \
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| (SIM_IS_SCSIBUS_B(ahc, sim) ? TWIN_CHNLB : 0))
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#define SCB_GET_SIM(ahc, scb) \
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(SCB_GET_CHANNEL(ahc, scb) == 'A' ? (ahc)->platform_data->sim \
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: (ahc)->platform_data->sim_b)
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#ifndef offsetof
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#define offsetof(type, member) ((size_t)(&((type *)0)->member))
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#endif
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/************************ Tunable Driver Parameters **************************/
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/*
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* The number of dma segments supported. The sequencer can handle any number
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* of physically contiguous S/G entrys. To reduce the driver's memory
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* consumption, we limit the number supported to be sufficient to handle
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* the largest mapping supported by the kernel, MAXPHYS. Assuming the
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* transfer is as fragmented as possible and unaligned, this turns out to
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* be the number of paged sized transfers in MAXPHYS plus an extra element
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* to handle any unaligned residual. The sequencer fetches SG elements
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* in cacheline sized chucks, so make the number per-transaction an even
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* multiple of 16 which should align us on even the largest of cacheline
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* boundaries.
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*/
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#define AHC_NSEG (roundup(btoc(MAXPHYS) + 1, 16))
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/* This driver supports target mode */
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#define AHC_TARGET_MODE 1
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/************************** Softc/SCB Platform Data ***************************/
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struct ahc_platform_data {
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/*
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* Hooks into the XPT.
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*/
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struct cam_sim *sim;
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struct cam_sim *sim_b;
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struct cam_path *path;
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struct cam_path *path_b;
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int regs_res_type;
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int regs_res_id;
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int irq_res_type;
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struct resource *regs;
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struct resource *irq;
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void *ih;
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eventhandler_tag eh;
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struct proc *recovery_thread;
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};
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struct scb_platform_data {
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};
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/***************************** Core Includes **********************************/
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#ifdef AHC_REG_PRETTY_PRINT
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#define AIC_DEBUG_REGISTERS 1
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#else
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#define AIC_DEBUG_REGISTERS 0
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#endif
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#define AIC_CORE_INCLUDE <dev/aic7xxx/aic7xxx.h>
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#define AIC_LIB_PREFIX ahc
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#define AIC_CONST_PREFIX AHC
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#include <dev/aic7xxx/aic_osm_lib.h>
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/*************************** Device Access ************************************/
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#define ahc_inb(ahc, port) \
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bus_space_read_1((ahc)->tag, (ahc)->bsh, port)
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#define ahc_outb(ahc, port, value) \
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bus_space_write_1((ahc)->tag, (ahc)->bsh, port, value)
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#define ahc_outsb(ahc, port, valp, count) \
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bus_space_write_multi_1((ahc)->tag, (ahc)->bsh, port, valp, count)
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#define ahc_insb(ahc, port, valp, count) \
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bus_space_read_multi_1((ahc)->tag, (ahc)->bsh, port, valp, count)
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static __inline void ahc_flush_device_writes(struct ahc_softc *);
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static __inline void
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ahc_flush_device_writes(struct ahc_softc *ahc)
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{
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/* XXX Is this sufficient for all architectures??? */
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ahc_inb(ahc, INTSTAT);
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}
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/**************************** Locking Primitives ******************************/
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/* Lock protecting internal data structures */
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static __inline void ahc_lockinit(struct ahc_softc *);
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static __inline void ahc_lock(struct ahc_softc *, unsigned long *flags);
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static __inline void ahc_unlock(struct ahc_softc *, unsigned long *flags);
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/* Lock held during command compeletion to the upper layer */
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static __inline void ahc_done_lockinit(struct ahc_softc *);
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static __inline void ahc_done_lock(struct ahc_softc *, unsigned long *flags);
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static __inline void ahc_done_unlock(struct ahc_softc *, unsigned long *flags);
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/* Lock held during ahc_list manipulation and ahc softc frees */
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static __inline void ahc_list_lockinit(void);
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static __inline void ahc_list_lock(unsigned long *flags);
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static __inline void ahc_list_unlock(unsigned long *flags);
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static __inline void
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ahc_lockinit(struct ahc_softc *ahc)
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{
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}
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static __inline void
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ahc_lock(struct ahc_softc *ahc, unsigned long *flags)
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{
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*flags = splcam();
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}
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static __inline void
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ahc_unlock(struct ahc_softc *ahc, unsigned long *flags)
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{
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splx(*flags);
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}
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/* Lock held during command compeletion to the upper layer */
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static __inline void
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ahc_done_lockinit(struct ahc_softc *ahc)
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{
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}
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static __inline void
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ahc_done_lock(struct ahc_softc *ahc, unsigned long *flags)
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{
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}
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static __inline void
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ahc_done_unlock(struct ahc_softc *ahc, unsigned long *flags)
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{
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}
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/* Lock held during ahc_list manipulation and ahc softc frees */
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static __inline void
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ahc_list_lockinit(void)
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{
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}
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static __inline void
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ahc_list_lock(unsigned long *flags)
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{
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}
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static __inline void
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ahc_list_unlock(unsigned long *flags)
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{
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}
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/************************* Initialization/Teardown ****************************/
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int ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg);
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void ahc_platform_free(struct ahc_softc *ahc);
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int ahc_map_int(struct ahc_softc *ahc);
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int ahc_attach(struct ahc_softc *);
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int ahc_softc_comp(struct ahc_softc *lahc, struct ahc_softc *rahc);
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int ahc_detach(device_t);
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/********************************** PCI ***************************************/
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#ifdef AIC_PCI_CONFIG
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int ahc_pci_map_registers(struct ahc_softc *ahc);
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#define ahc_pci_map_int ahc_map_int
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#endif /*AIC_PCI_CONFIG*/
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/******************************** VL/EISA *************************************/
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int aic7770_map_registers(struct ahc_softc *ahc, u_int port);
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static __inline int aic7770_map_int(struct ahc_softc *, int);
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static __inline int
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aic7770_map_int(struct ahc_softc *ahc, int irq)
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{
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/*
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* The IRQ is unused in the FreeBSD
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* implementation since the EISA and
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* ISA attachments register the IRQ
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* with newbus before the core is called.
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*/
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return ahc_map_int(ahc);
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}
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/********************************* Debug **************************************/
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static __inline void ahc_print_path(struct ahc_softc *, struct scb *);
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static __inline void ahc_platform_dump_card_state(struct ahc_softc *ahc);
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static __inline void
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ahc_print_path(struct ahc_softc *ahc, struct scb *scb)
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{
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xpt_print_path(scb->io_ctx->ccb_h.path);
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}
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static __inline void
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ahc_platform_dump_card_state(struct ahc_softc *ahc)
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{
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/* Nothing to do here for FreeBSD */
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}
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/**************************** Transfer Settings *******************************/
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void ahc_notify_xfer_settings_change(struct ahc_softc *,
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struct ahc_devinfo *);
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void ahc_platform_set_tags(struct ahc_softc *, struct ahc_devinfo *,
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int /*enable*/);
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/****************************** Interrupts ************************************/
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void ahc_platform_intr(void *);
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static __inline void ahc_platform_flushwork(struct ahc_softc *ahc);
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static __inline void
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ahc_platform_flushwork(struct ahc_softc *ahc)
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{
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}
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/************************ Misc Function Declarations **************************/
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void ahc_done(struct ahc_softc *ahc, struct scb *scb);
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void ahc_send_async(struct ahc_softc *, char /*channel*/,
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u_int /*target*/, u_int /*lun*/, ac_code, void *arg);
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#endif /* _AIC7XXX_FREEBSD_H_ */
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