a85e26c4bf
issues which they found and asked to be changed so 3ware can offcially support the driver. Summary of the most significant changes: - TWE_OVERRIDE is no longer supported - If twe_getparam failed, bogus data would be returned to the caller - Cache the device unit in the twe_drive structure to aid debugging - Add the 3ware driver version. - Proper return error codes for many functions. - Track the minimum queue length statistics - 4.x compat: use the cached unit number from the twe_drive structure instead of the the cached si_drv2. 3ware found that after many loads and unloads that si_drv2 became corrupted. This did not happen in -current. Submitted by: Vinod Kashyap (with modifications by me) Approved by: re (rwatson)
162 lines
6.3 KiB
C
162 lines
6.3 KiB
C
/*-
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* Copyright (c) 2000 Michael Smith
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* Copyright (c) 2003 Paul Saab
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* Copyright (c) 2003 Vinod Kashyap
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* Copyright (c) 2000 BSDi
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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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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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
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* FOR 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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* $FreeBSD$
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*/
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/*
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* Portability and compatibility interfaces.
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*/
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#ifdef __FreeBSD__
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/******************************************************************************
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* FreeBSD
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*/
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#define TWE_SUPPORTED_PLATFORM
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#include <sys/param.h>
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#include <sys/endian.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/kernel.h>
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#include <sys/sysctl.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/disk.h>
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#include <sys/stat.h>
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#include <machine/bus_pio.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#define TWE_DRIVER_NAME twe
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#define TWED_DRIVER_NAME twed
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#define TWE_MALLOC_CLASS M_TWE
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/*
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* Wrappers for bus-space actions
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*/
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#define TWE_CONTROL(sc, val) bus_space_write_4((sc)->twe_btag, (sc)->twe_bhandle, 0x0, (u_int32_t)val)
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#define TWE_STATUS(sc) (u_int32_t)bus_space_read_4((sc)->twe_btag, (sc)->twe_bhandle, 0x4)
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#define TWE_COMMAND_QUEUE(sc, val) bus_space_write_4((sc)->twe_btag, (sc)->twe_bhandle, 0x8, (u_int32_t)val)
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#define TWE_RESPONSE_QUEUE(sc) (TWE_Response_Queue)bus_space_read_4((sc)->twe_btag, (sc)->twe_bhandle, 0xc)
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/*
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* FreeBSD-specific softc elements
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*/
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#define TWE_PLATFORM_SOFTC \
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bus_dmamap_t twe_cmdmap; /* DMA map for command */ \
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u_int32_t twe_cmdphys; /* address of command in controller space */ \
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device_t twe_dev; /* bus device */ \
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dev_t twe_dev_t; /* control device */ \
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struct resource *twe_io; /* register interface window */ \
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bus_space_handle_t twe_bhandle; /* bus space handle */ \
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bus_space_tag_t twe_btag; /* bus space tag */ \
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bus_dma_tag_t twe_parent_dmat; /* parent DMA tag */ \
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bus_dma_tag_t twe_buffer_dmat; /* data buffer DMA tag */ \
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bus_dma_tag_t twe_cmd_dmat; /* command buffer DMA tag */ \
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bus_dma_tag_t twe_immediate_dmat; /* command buffer DMA tag */ \
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struct resource *twe_irq; /* interrupt */ \
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void *twe_intr; /* interrupt handle */ \
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struct intr_config_hook twe_ich; /* delayed-startup hook */ \
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void *twe_cmd; /* command structures */ \
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void *twe_immediate; /* immediate commands */ \
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bus_dmamap_t twe_immediate_map; \
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struct sysctl_ctx_list sysctl_ctx; \
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struct sysctl_oid *sysctl_tree;
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/*
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* FreeBSD-specific request elements
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*/
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#define TWE_PLATFORM_REQUEST \
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bus_dmamap_t tr_dmamap; /* DMA map for data */ \
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u_int32_t tr_dataphys; /* data buffer base address in controller space */
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/*
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* Output identifying the controller/disk
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*/
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#define twe_printf(sc, fmt, args...) device_printf(sc->twe_dev, fmt , ##args)
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#define twed_printf(twed, fmt, args...) device_printf(twed->twed_dev, fmt , ##args)
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#if __FreeBSD_version < 500003
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# include <machine/clock.h>
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# define INTR_ENTROPY 0
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# define FREEBSD_4
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# include <sys/buf.h> /* old buf style */
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typedef struct buf twe_bio;
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typedef struct buf_queue_head twe_bioq;
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# define TWE_BIO_QINIT(bq) bufq_init(&bq);
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# define TWE_BIO_QINSERT(bq, bp) bufq_insert_tail(&bq, bp)
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# define TWE_BIO_QFIRST(bq) bufq_first(&bq)
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# define TWE_BIO_QREMOVE(bq, bp) bufq_remove(&bq, bp)
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# define TWE_BIO_IS_READ(bp) ((bp)->b_flags & B_READ)
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# define TWE_BIO_DATA(bp) (bp)->b_data
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# define TWE_BIO_LENGTH(bp) (bp)->b_bcount
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# define TWE_BIO_LBA(bp) (bp)->b_pblkno
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# define TWE_BIO_SOFTC(bp) (bp)->b_dev->si_drv1
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# define TWE_BIO_UNIT(bp) *(int *)((bp)->b_dev->si_drv2)
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# define TWE_BIO_SET_ERROR(bp, err) do { (bp)->b_error = err; (bp)->b_flags |= B_ERROR;} while(0)
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# define TWE_BIO_HAS_ERROR(bp) ((bp)->b_flags & B_ERROR)
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# define TWE_BIO_RESID(bp) (bp)->b_resid
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# define TWE_BIO_DONE(bp) biodone(bp)
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# define TWE_BIO_STATS_START(bp) devstat_start_transaction(&((struct twed_softc *)TWE_BIO_SOFTC(bp))->twed_stats)
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# define TWE_BIO_STATS_END(bp) devstat_end_transaction_buf(&((struct twed_softc *)TWE_BIO_SOFTC(bp))->twed_stats, bp)
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#else
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# include <sys/bio.h>
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# include <geom/geom_disk.h>
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typedef struct bio twe_bio;
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typedef struct bio_queue_head twe_bioq;
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# define TWE_BIO_QINIT(bq) bioq_init(&bq);
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# define TWE_BIO_QINSERT(bq, bp) bioq_insert_tail(&bq, bp)
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# define TWE_BIO_QFIRST(bq) bioq_first(&bq)
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# define TWE_BIO_QREMOVE(bq, bp) bioq_remove(&bq, bp)
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# define TWE_BIO_IS_READ(bp) ((bp)->bio_cmd == BIO_READ)
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# define TWE_BIO_DATA(bp) (bp)->bio_data
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# define TWE_BIO_LENGTH(bp) (bp)->bio_bcount
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# define TWE_BIO_LBA(bp) (bp)->bio_pblkno
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# define TWE_BIO_SOFTC(bp) (bp)->bio_disk->d_drv1
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# define TWE_BIO_UNIT(bp) *(int *)(bp->bio_driver1)
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# define TWE_BIO_SET_ERROR(bp, err) do { (bp)->bio_error = err; (bp)->bio_flags |= BIO_ERROR;} while(0)
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# define TWE_BIO_HAS_ERROR(bp) ((bp)->bio_flags & BIO_ERROR)
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# define TWE_BIO_RESID(bp) (bp)->bio_resid
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# define TWE_BIO_DONE(bp) biodone(bp)
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# define TWE_BIO_STATS_START(bp)
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# define TWE_BIO_STATS_END(bp)
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#endif
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#endif /* FreeBSD */
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#ifndef TWE_SUPPORTED_PLATFORM
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#error platform not supported
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#endif
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