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freebsd/sys/dev/aic7xxx/aic7xxx_osm.h

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/*-
* FreeBSD 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.
*
* $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/aic7xxx_osm.h#18 $
*
* $FreeBSD$
*/
#ifndef _AIC7XXX_FREEBSD_H_
#define _AIC7XXX_FREEBSD_H_
#include <opt_aic7xxx.h> /* for config options */
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h> /* For device_t */
#if __FreeBSD_version >= 500000
#include <sys/endian.h>
#endif
#include <sys/eventhandler.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/queue.h>
#if __FreeBSD_version < 500000
#include <pci.h>
#else
#define NPCI 1
#endif
#if NPCI > 0
#define AIC_PCI_CONFIG 1
#endif
#include <machine/bus.h>
#include <machine/endian.h>
#include <machine/resource.h>
#include <sys/rman.h>
#if NPCI > 0
#if __FreeBSD_version >= 500000
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#else
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#endif
#endif
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/cam_debug.h>
#include <cam/cam_sim.h>
#include <cam/cam_xpt_sim.h>
#include <cam/scsi/scsi_all.h>
#include <cam/scsi/scsi_message.h>
/*************************** Attachment Bookkeeping ***************************/
extern devclass_t ahc_devclass;
/****************************** 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) \
| (SIM_IS_SCSIBUS_B(ahc, sim) ? TWIN_CHNLB : 0))
#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
/************************ 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.
*/
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;
struct proc *recovery_thread;
struct mtx mtx;
};
struct scb_platform_data {
};
/***************************** Core Includes **********************************/
#ifdef AHC_REG_PRETTY_PRINT
#define AIC_DEBUG_REGISTERS 1
#else
#define AIC_DEBUG_REGISTERS 0
#endif
#define AIC_CORE_INCLUDE <dev/aic7xxx/aic7xxx.h>
#define AIC_LIB_PREFIX ahc
#define AIC_CONST_PREFIX AHC
#include <dev/aic7xxx/aic_osm_lib.h>
/*************************** 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??? */
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 *);
static __inline void ahc_unlock(struct ahc_softc *);
static __inline void
ahc_lockinit(struct ahc_softc *ahc)
{
mtx_init(&ahc->platform_data->mtx, "ahc_lock", NULL, MTX_DEF);
}
static __inline void
ahc_lock(struct ahc_softc *ahc)
{
mtx_lock(&ahc->platform_data->mtx);
}
static __inline void
ahc_unlock(struct ahc_softc *ahc)
{
mtx_unlock(&ahc->platform_data->mtx);
}
/************************* Initialization/Teardown ****************************/
int ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg);
void ahc_platform_free(struct ahc_softc *ahc);
int ahc_map_int(struct ahc_softc *ahc);
int ahc_attach(struct ahc_softc *);
int ahc_softc_comp(struct ahc_softc *lahc, struct ahc_softc *rahc);
int ahc_detach(device_t);
/********************************** PCI ***************************************/
#ifdef AIC_PCI_CONFIG
int ahc_pci_map_registers(struct ahc_softc *ahc);
#define ahc_pci_map_int ahc_map_int
#endif /*AIC_PCI_CONFIG*/
/******************************** VL/EISA *************************************/
int aic7770_map_registers(struct ahc_softc *ahc, u_int port);
static __inline int aic7770_map_int(struct ahc_softc *, int);
static __inline int
aic7770_map_int(struct ahc_softc *ahc, int irq)
{
/*
* The IRQ is unused in the FreeBSD
* implementation since the EISA and
* ISA attachments register the IRQ
* with newbus before the core is called.
*/
return ahc_map_int(ahc);
}
/********************************* Debug **************************************/
static __inline void ahc_print_path(struct ahc_softc *, struct scb *);
static __inline void ahc_platform_dump_card_state(struct ahc_softc *ahc);
static __inline void
ahc_print_path(struct ahc_softc *ahc, struct scb *scb)
{
xpt_print_path(scb->io_ctx->ccb_h.path);
}
static __inline void
ahc_platform_dump_card_state(struct ahc_softc *ahc)
{
/* Nothing to do here for FreeBSD */
}
/**************************** 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 /*enable*/);
/****************************** Interrupts ************************************/
void ahc_platform_intr(void *);
static __inline void ahc_platform_flushwork(struct ahc_softc *ahc);
static __inline void
ahc_platform_flushwork(struct ahc_softc *ahc)
{
}
/************************ Misc Function Declarations **************************/
void ahc_done(struct ahc_softc *ahc, struct scb *scb);
void ahc_send_async(struct ahc_softc *, char /*channel*/,
u_int /*target*/, u_int /*lun*/, ac_code, void *arg);
#endif /* _AIC7XXX_FREEBSD_H_ */
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