a4e4cebf17
VesaLocalBus or EISA. Internally, EISA and ISA are handled the same, with VL being handled slightly differently. To avoid too much code churn, retain the EISA name, despite it being used only for ISA bus. When it is on the ISA bus, weird gymnastics are required with EISA-space address accesses as well. Remove known models from the ahc man page. Remove ahc_eisa module.
277 lines
8.7 KiB
C
277 lines
8.7 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 legacy kernel MAXPHYS setting of
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* 128K. This can be increased once some testing is done. Assuming the
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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_MAXPHYS (128 * 1024)
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#define AHC_NSEG (roundup(btoc(AHC_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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struct mtx mtx;
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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 *);
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static __inline void ahc_unlock(struct ahc_softc *);
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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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mtx_init(&ahc->platform_data->mtx, "ahc_lock", NULL, MTX_DEF);
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}
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static __inline void
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ahc_lock(struct ahc_softc *ahc)
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{
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mtx_lock(&ahc->platform_data->mtx);
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}
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static __inline void
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ahc_unlock(struct ahc_softc *ahc)
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{
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mtx_unlock(&ahc->platform_data->mtx);
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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/ISA *********************************/
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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 ISA attachment
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* registers the IRQ with newbus before
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* 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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