Exemplo n.º 1
0
static int
mlx_pci_attach(device_t dev)
{
    struct mlx_softc	*sc;
    struct mlx_ident	*m;
    int			error;

    debug_called(1);

    pci_enable_busmaster(dev);

    sc = device_get_softc(dev);
    sc->mlx_dev = dev;

    /*
     * Work out what sort of adapter this is (we need to know this in order
     * to map the appropriate interface resources).
     */
    m = mlx_pci_match(dev);
    if (m == NULL)		/* shouldn't happen */
	return(ENXIO);
    sc->mlx_iftype = m->iftype;

    mtx_init(&sc->mlx_io_lock, "mlx I/O", NULL, MTX_DEF);
    sx_init(&sc->mlx_config_lock, "mlx config");
    callout_init_mtx(&sc->mlx_timeout, &sc->mlx_io_lock, 0);

    /*
     * Allocate the PCI register window.
     */
    
    /* type 2/3 adapters have an I/O region we don't prefer at base 0 */
    switch(sc->mlx_iftype) {
    case MLX_IFTYPE_2:
    case MLX_IFTYPE_3:
	sc->mlx_mem_type = SYS_RES_MEMORY;
	sc->mlx_mem_rid = MLX_CFG_BASE1;
	sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type,
		&sc->mlx_mem_rid, RF_ACTIVE);
	if (sc->mlx_mem == NULL) {
	    sc->mlx_mem_type = SYS_RES_IOPORT;
	    sc->mlx_mem_rid = MLX_CFG_BASE0;
	    sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type,
		&sc->mlx_mem_rid, RF_ACTIVE);
	}
	break;
    case MLX_IFTYPE_4:
    case MLX_IFTYPE_5:
	sc->mlx_mem_type = SYS_RES_MEMORY;
	sc->mlx_mem_rid = MLX_CFG_BASE0;
	sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type,
		&sc->mlx_mem_rid, RF_ACTIVE);
	break;
    }
    if (sc->mlx_mem == NULL) {
	device_printf(sc->mlx_dev, "couldn't allocate mailbox window\n");
	mlx_free(sc);
	return(ENXIO);
    }

    /*
     * Allocate the parent bus DMA tag appropriate for PCI.
     */
    error = bus_dma_tag_create(bus_get_dma_tag(dev),	/* PCI parent */
			       1, 0, 			/* alignment, boundary */
			       BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
			       BUS_SPACE_MAXADDR, 	/* highaddr */
			       NULL, NULL, 		/* filter, filterarg */
			       MAXBSIZE, MLX_NSEG,	/* maxsize, nsegments */
			       BUS_SPACE_MAXSIZE_32BIT,	/* maxsegsize */
			       BUS_DMA_ALLOCNOW,	/* flags */
			       NULL,			/* lockfunc */
			       NULL,			/* lockarg */
			       &sc->mlx_parent_dmat);
    if (error != 0) {
	device_printf(dev, "can't allocate parent DMA tag\n");
	mlx_free(sc);
	return(ENOMEM);
    }

    /*
     * Do bus-independant initialisation.
     */
    error = mlx_attach(sc);
    if (error != 0) {
	mlx_free(sc);
	return(error);
    }
    
    /*
     * Start the controller.
     */
    mlx_startup(sc);
    return(0);
}
Exemplo n.º 2
0
static int
mlx_pci_attach(device_t dev)
{
    struct mlx_softc	*sc;
    int			i, error;
    u_int32_t		command;

    debug_called(1);

    /*
     * Make sure we are going to be able to talk to this board.
     */
    command = pci_read_config(dev, PCIR_COMMAND, 2);
    if ((command & PCIM_CMD_MEMEN) == 0) {
	device_printf(dev, "memory window not available\n");
	return(ENXIO);
    }
    /* force the busmaster enable bit on */
    command |= PCIM_CMD_BUSMASTEREN;
    pci_write_config(dev, PCIR_COMMAND, command, 2);

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

    /*
     * Work out what sort of adapter this is (we need to know this in order
     * to map the appropriate interface resources).
     */
    sc->mlx_iftype = 0;
    for (i = 0; mlx_identifiers[i].vendor != 0; i++) {
	if ((mlx_identifiers[i].vendor == pci_get_vendor(dev)) &&
	    (mlx_identifiers[i].device == pci_get_device(dev))) {
	    sc->mlx_iftype = mlx_identifiers[i].iftype;
	    break;
	}
    }
    if (sc->mlx_iftype == 0)		/* shouldn't happen */
	return(ENXIO);
    
    /*
     * Allocate the PCI register window.
     */
    
    /* type 2/3 adapters have an I/O region we don't prefer at base 0 */
    switch(sc->mlx_iftype) {
    case MLX_IFTYPE_2:
    case MLX_IFTYPE_3:
	sc->mlx_mem_type = SYS_RES_MEMORY;
	sc->mlx_mem_rid = MLX_CFG_BASE1;
	sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type,
		&sc->mlx_mem_rid, RF_ACTIVE);
	if (sc->mlx_mem == NULL) {
	    sc->mlx_mem_type = SYS_RES_IOPORT;
	    sc->mlx_mem_rid = MLX_CFG_BASE0;
	    sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type,
		&sc->mlx_mem_rid, RF_ACTIVE);
	}
	break;
    case MLX_IFTYPE_4:
    case MLX_IFTYPE_5:
	sc->mlx_mem_type = SYS_RES_MEMORY;
	sc->mlx_mem_rid = MLX_CFG_BASE0;
	sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type,
		&sc->mlx_mem_rid, RF_ACTIVE);
	break;
    }
    if (sc->mlx_mem == NULL) {
	device_printf(sc->mlx_dev, "couldn't allocate mailbox window\n");
	mlx_free(sc);
	return(ENXIO);
    }
    sc->mlx_btag = rman_get_bustag(sc->mlx_mem);
    sc->mlx_bhandle = rman_get_bushandle(sc->mlx_mem);

    /*
     * Allocate the parent bus DMA tag appropriate for PCI.
     */
    error = bus_dma_tag_create(NULL, 			/* parent */
			       1, 0, 			/* alignment, boundary */
			       BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
			       BUS_SPACE_MAXADDR, 	/* highaddr */
			       NULL, NULL, 		/* filter, filterarg */
			       MAXBSIZE, MLX_NSEG,	/* maxsize, nsegments */
			       BUS_SPACE_MAXSIZE_32BIT,	/* maxsegsize */
			       BUS_DMA_ALLOCNOW,	/* flags */
			       NULL,			/* lockfunc */
			       NULL,			/* lockarg */
			       &sc->mlx_parent_dmat);
    if (error != 0) {
	device_printf(dev, "can't allocate parent DMA tag\n");
	mlx_free(sc);
	return(ENOMEM);
    }

    /*
     * Do bus-independant initialisation.
     */
    error = mlx_attach(sc);
    if (error != 0) {
	mlx_free(sc);
	return(error);
    }
    
    /*
     * Start the controller.
     */
    mlx_startup(sc);
    return(0);
}