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7b531e6037
freebsd/sys/dev/twe/twe_compat.h
Mike Smith e6c12d85d0 Major update to the 'twe' driver. 
- Layout reorganisation to enhance portability.  The driver now has
   a relatively MI 'core' and a FreeBSD-specific layer over the top.
   Since the NetBSD people have already done their own port, this is
   largely just to help me with the BSD/OS port.

 - Request ID allocation changed to improve performance (I'd been
   considering switching to this approach after having failed to come
   up with a better way to dynamically allocate request IDs, and seeing
   Andy Doran use it in the NetBSD port of the driver convinced me
   that I was wasting my time doing it any other way).  Now we just
   allocate all the requests up front.

 - Maximum request count bumped back to 255 after characterisation
   of a firmware issue (off-by-one causing it to crash with 256
   outstanding commands).

 - Control interface implemented.  This allows 3ware's '3dm' utility to
   talk to the controller.  3dm will be available from 3ware shortly.

 - Controller soft-reset feature added; if the controller signals a
   firmware or protocol error, the controller will be reset and all
   outstanding commands will be retried.
2000-10-25 06:59:06 +00:00

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/*-
* Copyright (c) 2000 Michael Smith
* Copyright (c) 2000 BSDi
* 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.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 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.
*
* $FreeBSD$
*/
/*
* Portability and compatibility interfaces.
*/
#ifdef __FreeBSD__
/******************************************************************************
* FreeBSD
*/
#define TWE_SUPPORTED_PLATFORM
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/disk.h>
#include <sys/stat.h>
#include <machine/bus_pio.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <pci/pcireg.h>
#include <pci/pcivar.h>
/*
* These macros allows us to build a version of the driver which can
* safely be loaded into a kernel which already contains a 'twe' driver,
* and which will override it in all things.
*
* All public symbols must be listed here.
*/
#ifdef TWE_OVERRIDE
#define twe_setup Xtwe_setup
#define twe_init Xtwe_init
#define twe_deinit Xtwe_deinit
#define twe_intr Xtwe_intr
#define twe_submit_bio Xtwe_submit_bio
#define twe_ioctl Xtwe_ioctl
#define twe_describe_controller Xtwe_describe_controller
#define twe_print_controller Xtwe_print_controller
#define twe_enable_interrupts Xtwe_enable_interrupts
#define twe_disable_interrupts Xtwe_disable_interrupts
#define twe_attach_drive Xtwe_attach_drive
#define twed_intr Xtwed_intr
#define twe_allocate_request Xtwe_allocate_request
#define twe_free_request Xtwe_free_request
#define twe_map_request Xtwe_map_request
#define twe_unmap_request Xtwe_unmap_request
#define twe_describe_code Xtwe_describe_code
#define twe_table_status Xtwe_table_status
#define twe_table_unitstate Xtwe_table_unitstate
#define twe_table_unittype Xtwe_table_unittype
#define twe_table_aen Xtwe_table_aen
#define TWE_DRIVER_NAME Xtwe
#define TWED_DRIVER_NAME Xtwed
#define TWE_MALLOC_CLASS M_XTWE
#else
#define TWE_DRIVER_NAME twe
#define TWED_DRIVER_NAME twed
#define TWE_MALLOC_CLASS M_TWE
#endif
/*
* Wrappers for bus-space actions
*/
#define TWE_CONTROL(sc, val) bus_space_write_4(sc->twe_btag, sc->twe_bhandle, 0x0, (u_int32_t)val)
#define TWE_STATUS(sc) (u_int32_t)bus_space_read_4(sc->twe_btag, sc->twe_bhandle, 0x4)
#define TWE_COMMAND_QUEUE(sc, val) bus_space_write_4(sc->twe_btag, sc->twe_bhandle, 0x8, (u_int32_t)val)
#define TWE_RESPONSE_QUEUE(sc) (TWE_Response_Queue)bus_space_read_4(sc->twe_btag, sc->twe_bhandle, 0xc)
/*
* FreeBSD-specific softc elements
*/
#define TWE_PLATFORM_SOFTC \
device_t twe_dev; /* bus device */ \
dev_t twe_dev_t; /* control device */ \
struct resource *twe_io; /* register interface window */ \
bus_space_handle_t twe_bhandle; /* bus space handle */ \
bus_space_tag_t twe_btag; /* bus space tag */ \
bus_dma_tag_t twe_parent_dmat; /* parent DMA tag */ \
bus_dma_tag_t twe_buffer_dmat; /* data buffer DMA tag */ \
struct resource *twe_irq; /* interrupt */ \
void *twe_intr; /* interrupt handle */ \
struct intr_config_hook twe_ich; /* delayed-startup hook */
/*
* FreeBSD-specific request elements
*/
#define TWE_PLATFORM_REQUEST \
bus_dmamap_t tr_cmdmap; /* DMA map for command */ \
u_int32_t tr_cmdphys; /* address of command in controller space */ \
bus_dmamap_t tr_dmamap; /* DMA map for data */ \
u_int32_t tr_dataphys; /* data buffer base address in controller space */
/*
* Output identifying the controller/disk
*/
#define twe_printf(sc, fmt, args...) device_printf(sc->twe_dev, fmt , ##args)
#define twed_printf(twed, fmt, args...) device_printf(twed->twed_dev, fmt , ##args)
#if __FreeBSD_version < 500003 /* old buf style */
# include <sys/buf.h>
typedef struct buf twe_bio;
typedef struct buf_queue_head twe_bioq;
# define TWE_BIO_QINIT(bq) bufq_init(&bq);
# define TWE_BIO_QINSERT(bq, bp) bufq_insert_tail(&bq, bp)
# define TWE_BIO_QFIRST(bq) bufq_first(&bq)
# define TWE_BIO_QREMOVE(bq, bp) bufq_remove(&bq, bp)
# define TWE_BIO_IS_READ(bp) ((bp)->b_flags & B_READ)
# define TWE_BIO_DATA(bp) (bp)->b_data
# define TWE_BIO_LENGTH(bp) (bp)->b_bcount
# define TWE_BIO_LBA(bp) (bp)->b_pblkno
# define TWE_BIO_SOFTC(bp) (bp)->b_dev->si_drv1
# define TWE_BIO_UNIT(bp) *(int *)((bp)->b_dev->si_drv2)
# define TWE_BIO_SET_ERROR(bp, err) do { (bp)->b_error = err; (bp)->b_flags |= B_ERROR;} while(0)
# define TWE_BIO_HAS_ERROR(bp) ((bp)->b_flags & B_ERROR)
# define TWE_BIO_RESID(bp) (bp)->b_resid
# define TWE_BIO_DONE(bp) biodone(bp)
# define TWE_BIO_STATS_START(bp) devstat_start_transaction(&((struct twed_softc *)TWE_BIO_SOFTC(bp))->twed_stats)
# define TWE_BIO_STATS_END(bp) devstat_end_transaction_buf(&((struct twed_softc *)TWE_BIO_SOFTC(bp))->twed_stats, bp)
#else
# include <sys/bio.h>
typedef struct bio twe_bio;
typedef struct bio_queue_head twe_bioq;
# define TWE_BIO_QINIT(bq) bioq_init(&bq);
# define TWE_BIO_QINSERT(bq, bp) bioq_insert_tail(&bq, bp)
# define TWE_BIO_QFIRST(bq) bioq_first(&bq)
# define TWE_BIO_QREMOVE(bq, bp) bioq_remove(&bq, bp)
# define TWE_BIO_IS_READ(bp) ((bp)->bio_cmd == BIO_READ)
# define TWE_BIO_DATA(bp) (bp)->bio_data
# define TWE_BIO_LENGTH(bp) (bp)->bio_bcount
# define TWE_BIO_LBA(bp) (bp)->bio_pblkno
# define TWE_BIO_SOFTC(bp) (bp)->bio_dev->si_drv1
# define TWE_BIO_UNIT(bp) *(int *)((bp)->bio_dev->si_drv2)
# define TWE_BIO_SET_ERROR(bp, err) do { (bp)->bio_error = err; (bp)->bio_flags |= BIO_ERROR;} while(0)
# define TWE_BIO_HAS_ERROR(bp) ((bp)->bio_flags & BIO_ERROR)
# define TWE_BIO_RESID(bp) (bp)->bio_resid
# define TWE_BIO_DONE(bp) biodone(bp)
# define TWE_BIO_STATS_START(bp) devstat_start_transaction(&((struct twed_softc *)TWE_BIO_SOFTC(bp))->twed_stats)
# define TWE_BIO_STATS_END(bp) devstat_end_transaction_bio(&((struct twed_softc *)TWE_BIO_SOFTC(bp))->twed_stats, bp)
#endif
#endif /* FreeBSD */
#ifndef TWE_SUPPORTED_PLATFORM
#error platform not supported
#endif
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