Exemple #1
0
static int
amr_pci_attach(device_t dev)
{
    struct amr_softc	*sc;
    struct amr_ident	*id;
    int			rid, rtype, error;

    debug_called(1);

    /*
     * Initialise softc.
     */
    sc = device_get_softc(dev);
    bzero(sc, sizeof(*sc));
    sc->amr_dev = dev;

    /* assume failure is 'not configured' */
    error = ENXIO;

    /*
     * Determine board type.
     */
    if ((id = amr_find_ident(dev)) == NULL)
	return (ENXIO);

    if (id->flags & AMR_ID_QUARTZ) {
	sc->amr_type |= AMR_TYPE_QUARTZ;
    }

    if ((amr_force_sg32 == 0) && (id->flags & AMR_ID_DO_SG64) &&
	(sizeof(vm_paddr_t) > 4)) {
	device_printf(dev, "Using 64-bit DMA\n");
	sc->amr_type |= AMR_TYPE_SG64;
    }

    /* force the busmaster enable bit on */
    pci_enable_busmaster(dev);

    /*
     * Allocate the PCI register window.
     */
    rid = PCIR_BAR(0);
    rtype = AMR_IS_QUARTZ(sc) ? SYS_RES_MEMORY : SYS_RES_IOPORT;
    sc->amr_reg = bus_alloc_resource_any(dev, rtype, &rid, RF_ACTIVE);
    if (sc->amr_reg == NULL) {
	device_printf(sc->amr_dev, "can't allocate register window\n");
	goto out;
    }
    sc->amr_btag = rman_get_bustag(sc->amr_reg);
    sc->amr_bhandle = rman_get_bushandle(sc->amr_reg);

    /*
     * Allocate and connect our interrupt.
     */
    rid = 0;
    sc->amr_irq = bus_alloc_resource_any(sc->amr_dev, SYS_RES_IRQ, &rid,
        RF_SHAREABLE | RF_ACTIVE);
    if (sc->amr_irq == NULL) {
        device_printf(sc->amr_dev, "can't allocate interrupt\n");
	goto out;
    }
    if (bus_setup_intr(sc->amr_dev, sc->amr_irq,
	INTR_TYPE_BIO | INTR_ENTROPY | INTR_MPSAFE, NULL, amr_pci_intr,
	sc, &sc->amr_intr)) {
        device_printf(sc->amr_dev, "can't set up interrupt\n");
	goto out;
    }

    debug(2, "interrupt attached");

    /* assume failure is 'out of memory' */
    error = ENOMEM;

    /*
     * Allocate the parent bus DMA tag appropriate for PCI.
     */
    if (bus_dma_tag_create(bus_get_dma_tag(dev),	/* PCI parent */
			   1, 0, 			/* alignment,boundary */
			   AMR_IS_SG64(sc) ?
			   BUS_SPACE_MAXADDR :
			   BUS_SPACE_MAXADDR_32BIT,	/* lowaddr */
			   BUS_SPACE_MAXADDR, 		/* highaddr */
			   NULL, NULL, 			/* filter, filterarg */
			   BUS_SPACE_MAXSIZE,		/* maxsize */
			   BUS_SPACE_UNRESTRICTED,	/* nsegments */
			   BUS_SPACE_MAXSIZE_32BIT,	/* maxsegsize */
			   0,				/* flags */
			   NULL, NULL,			/* lockfunc, lockarg */
			   &sc->amr_parent_dmat)) {
	device_printf(dev, "can't allocate parent DMA tag\n");
	goto out;
    }

    /*
     * Create DMA tag for mapping buffers into controller-addressable space.
     */
    if (bus_dma_tag_create(sc->amr_parent_dmat,		/* parent */
			   1, 0,			/* alignment,boundary */
			   BUS_SPACE_MAXADDR_32BIT,	/* lowaddr */
			   BUS_SPACE_MAXADDR,		/* highaddr */
			   NULL, NULL,			/* filter, filterarg */
			   DFLTPHYS,			/* maxsize */
			   AMR_NSEG,			/* nsegments */
			   BUS_SPACE_MAXSIZE_32BIT,	/* maxsegsize */
			   0,		/* flags */
			   busdma_lock_mutex,		/* lockfunc */
			   &sc->amr_list_lock,		/* lockarg */
			   &sc->amr_buffer_dmat)) {
        device_printf(sc->amr_dev, "can't allocate buffer DMA tag\n");
	goto out;
    }

    if (bus_dma_tag_create(sc->amr_parent_dmat,		/* parent */
			   1, 0,			/* alignment,boundary */
			   BUS_SPACE_MAXADDR,		/* lowaddr */
			   BUS_SPACE_MAXADDR,		/* highaddr */
			   NULL, NULL,			/* filter, filterarg */
			   DFLTPHYS,			/* maxsize */
			   AMR_NSEG,			/* nsegments */
			   BUS_SPACE_MAXSIZE_32BIT,	/* maxsegsize */
			   0,		/* flags */
			   busdma_lock_mutex,		/* lockfunc */
			   &sc->amr_list_lock,		/* lockarg */
			   &sc->amr_buffer64_dmat)) {
        device_printf(sc->amr_dev, "can't allocate buffer DMA tag\n");
	goto out;
    }

    debug(2, "dma tag done");

    /*
     * Allocate and set up mailbox in a bus-visible fashion.
     */
    mtx_init(&sc->amr_list_lock, "AMR List Lock", NULL, MTX_DEF);
    mtx_init(&sc->amr_hw_lock, "AMR HW Lock", NULL, MTX_DEF);
    if ((error = amr_setup_mbox(sc)) != 0)
	goto out;

    debug(2, "mailbox setup");

    /*
     * Build the scatter/gather buffers.
     */
    if ((error = amr_sglist_map(sc)) != 0)
	goto out;
    debug(2, "s/g list mapped");

    if ((error = amr_ccb_map(sc)) != 0)
	goto out;
    debug(2, "ccb mapped");


    /*
     * Do bus-independant initialisation, bring controller online.
     */
    error = amr_attach(sc);

out:
    if (error)
	amr_pci_free(sc);
    return(error);
}
Exemple #2
0
static int
amr_sglist_map(struct amr_softc *sc)
{
    size_t	segsize;
    void	*p;
    int		error;

    debug_called(1);

    /*
     * Create a single tag describing a region large enough to hold all of
     * the s/g lists we will need.
     *
     * Note that we could probably use AMR_LIMITCMD here, but that may become
     * tunable.
     */
    if (AMR_IS_SG64(sc))
	segsize = sizeof(struct amr_sg64entry) * AMR_NSEG * AMR_MAXCMD;
    else
	segsize = sizeof(struct amr_sgentry) * AMR_NSEG * AMR_MAXCMD;

    error = bus_dma_tag_create(sc->amr_parent_dmat, 	/* parent */
			       512, 0, 			/* alignment,boundary */
			       BUS_SPACE_MAXADDR_32BIT,	/* lowaddr */
			       BUS_SPACE_MAXADDR, 	/* highaddr */
			       NULL, NULL, 		/* filter, filterarg */
			       segsize, 1,		/* maxsize, nsegments */
			       BUS_SPACE_MAXSIZE_32BIT,	/* maxsegsize */
			       0,			/* flags */
			       NULL, NULL,		/* lockfunc, lockarg */
			       &sc->amr_sg_dmat);
    if (error != 0) {
	device_printf(sc->amr_dev, "can't allocate scatter/gather DMA tag\n");
	return(ENOMEM);
    }

    /*
     * Allocate enough s/g maps for all commands and permanently map them into
     * controller-visible space.
     *	
     * XXX this assumes we can get enough space for all the s/g maps in one 
     * contiguous slab.  We may need to switch to a more complex arrangement
     * where we allocate in smaller chunks and keep a lookup table from slot
     * to bus address.
     *
     * XXX HACK ALERT:	at least some controllers don't like the s/g memory
     *			being allocated below 0x2000.  We leak some memory if
     *			we get some below this mark and allocate again.  We
     *			should be able to avoid this with the tag setup, but
     *			that does't seem to work.
     */
retry:
    error = bus_dmamem_alloc(sc->amr_sg_dmat, (void **)&p, BUS_DMA_NOWAIT, &sc->amr_sg_dmamap);
    if (error) {
	device_printf(sc->amr_dev, "can't allocate s/g table\n");
	return(ENOMEM);
    }
    bus_dmamap_load(sc->amr_sg_dmat, sc->amr_sg_dmamap, p, segsize, amr_sglist_helper, &sc->amr_sgbusaddr, 0);
    if (sc->amr_sgbusaddr < 0x2000) {
	debug(1, "s/g table too low (0x%x), reallocating\n", sc->amr_sgbusaddr);
	goto retry;
    }

    if (AMR_IS_SG64(sc))
	sc->amr_sg64table = (struct amr_sg64entry *)p;
    sc->amr_sgtable = (struct amr_sgentry *)p;

    return(0);
}
Exemple #3
0
static int
amr_pci_attach(device_t dev)
{
    struct amr_softc	*sc;
    struct amr_ident	*id;
    int			rid, rtype, error;
    u_int32_t		command;

    debug_called(1);

    /*
     * Initialise softc.
     */
    sc = device_get_softc(dev);
    bzero(sc, sizeof(*sc));
    sc->amr_dev = dev;

    /* assume failure is 'not configured' */
    error = ENXIO;

    /*
     * Determine board type.
     */
    if ((id = amr_find_ident(dev)) == NULL)
	return (ENXIO);

    command = pci_read_config(dev, PCIR_COMMAND, 1);
    if (id->flags & AMR_ID_QUARTZ) {
	/*
	 * Make sure we are going to be able to talk to this board.
	 */
	if ((command & PCIM_CMD_MEMEN) == 0) {
	    device_printf(dev, "memory window not available\n");
	    return (ENXIO);
	}
	sc->amr_type |= AMR_TYPE_QUARTZ;
    } else {
	/*
	 * Make sure we are going to be able to talk to this board.
	 */
	if ((command & PCIM_CMD_PORTEN) == 0) {
	    device_printf(dev, "I/O window not available\n");
	    return (ENXIO);
	}
    }

    if ((amr_force_sg32 == 0) && (id->flags & AMR_ID_DO_SG64) &&
	(sizeof(vm_paddr_t) > 4)) {
	device_printf(dev, "Using 64-bit DMA\n");
	sc->amr_type |= AMR_TYPE_SG64;
    }

    /* force the busmaster enable bit on */
    if (!(command & PCIM_CMD_BUSMASTEREN)) {
	device_printf(dev, "busmaster bit not set, enabling\n");
	command |= PCIM_CMD_BUSMASTEREN;
	pci_write_config(dev, PCIR_COMMAND, command, 2);
    }

    /*
     * Allocate the PCI register window.
     */
    rid = PCIR_BAR(0);
    rtype = AMR_IS_QUARTZ(sc) ? SYS_RES_MEMORY : SYS_RES_IOPORT;
    sc->amr_reg = bus_alloc_resource_any(dev, rtype, &rid, RF_ACTIVE);
    if (sc->amr_reg == NULL) {
	device_printf(sc->amr_dev, "can't allocate register window\n");
	goto out;
    }
    sc->amr_btag = rman_get_bustag(sc->amr_reg);
    sc->amr_bhandle = rman_get_bushandle(sc->amr_reg);

    /*
     * Allocate and connect our interrupt.
     */
    rid = 0;
    sc->amr_irq = bus_alloc_resource_any(sc->amr_dev, SYS_RES_IRQ, &rid,
        RF_SHAREABLE | RF_ACTIVE);
    if (sc->amr_irq == NULL) {
        device_printf(sc->amr_dev, "can't allocate interrupt\n");
	goto out;
    }
    if (bus_setup_intr(sc->amr_dev, sc->amr_irq,
	0, amr_pci_intr,
	sc, &sc->amr_intr, NULL)) {
        device_printf(sc->amr_dev, "can't set up interrupt\n");
	goto out;
    }

    debug(2, "interrupt attached");

    /* assume failure is 'out of memory' */
    error = ENOMEM;

    /*
     * Allocate the parent bus DMA tag appropriate for PCI.
     */
    if (bus_dma_tag_create(NULL, 			/* parent */
			   1, 0, 			/* alignment,boundary */
			   AMR_IS_SG64(sc) ?
			   BUS_SPACE_MAXADDR :
			   BUS_SPACE_MAXADDR_32BIT,	/* lowaddr */
			   BUS_SPACE_MAXADDR, 		/* highaddr */
			   NULL, NULL, 			/* filter, filterarg */
			   MAXBSIZE, AMR_NSEG,		/* maxsize, nsegments */
			   BUS_SPACE_MAXSIZE_32BIT,	/* maxsegsize */
			   0,				/* flags */
			   &sc->amr_parent_dmat)) {
	device_printf(dev, "can't allocate parent DMA tag\n");
	goto out;
    }

    /*
     * Create DMA tag for mapping buffers into controller-addressable space.
     */
    if (bus_dma_tag_create(sc->amr_parent_dmat,		/* parent */
			   1, 0,			/* alignment,boundary */
			   BUS_SPACE_MAXADDR_32BIT,	/* lowaddr */
			   BUS_SPACE_MAXADDR,		/* highaddr */
			   NULL, NULL,			/* filter, filterarg */
			   MAXBSIZE, AMR_NSEG,		/* maxsize, nsegments */
			   MAXBSIZE,			/* maxsegsize */
			   0,		/* flags */
			   &sc->amr_buffer_dmat)) {
        device_printf(sc->amr_dev, "can't allocate buffer DMA tag\n");
	goto out;
    }

    if (bus_dma_tag_create(sc->amr_parent_dmat,		/* parent */
			   1, 0,			/* alignment,boundary */
			   BUS_SPACE_MAXADDR,		/* lowaddr */
			   BUS_SPACE_MAXADDR,		/* highaddr */
			   NULL, NULL,			/* filter, filterarg */
			   MAXBSIZE, AMR_NSEG,		/* maxsize, nsegments */
			   MAXBSIZE,			/* maxsegsize */
			   0,		/* flags */
			   &sc->amr_buffer64_dmat)) {
        device_printf(sc->amr_dev, "can't allocate buffer DMA tag\n");
	goto out;
    }

    debug(2, "dma tag done");

    /*
     * Allocate and set up mailbox in a bus-visible fashion.
     */
    lockinit(&sc->amr_list_lock, "AMR List Lock", 0, LK_CANRECURSE);
    lockinit(&sc->amr_hw_lock, "AMR HW Lock", 0, LK_CANRECURSE);
    if ((error = amr_setup_mbox(sc)) != 0)
	goto out;

    debug(2, "mailbox setup");

    /*
     * Build the scatter/gather buffers.
     */
    if ((error = amr_sglist_map(sc)) != 0)
	goto out;
    debug(2, "s/g list mapped");

    if ((error = amr_ccb_map(sc)) != 0)
	goto out;
    debug(2, "ccb mapped");


    /*
     * Do bus-independant initialisation, bring controller online.
     */
    error = amr_attach(sc);

out:
    if (error)
	amr_pci_free(sc);
    return(error);
}