diff options
Diffstat (limited to 'sys/dev/fdc/fdc_isa.c')
| -rw-r--r-- | sys/dev/fdc/fdc_isa.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/sys/dev/fdc/fdc_isa.c b/sys/dev/fdc/fdc_isa.c new file mode 100644 index 0000000..e519bee --- /dev/null +++ b/sys/dev/fdc/fdc_isa.c @@ -0,0 +1,145 @@ +/* + * Copyright (c) 2004 M. Warner Losh. + * 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, immediately at the beginning of the file. + * 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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/bio.h> +#include <sys/bus.h> +#include <sys/kernel.h> +#include <sys/module.h> +#include <sys/rman.h> +#include <sys/systm.h> + +#include <dev/fdc/fdcvar.h> +#include <dev/fdc/fdcreg.h> + +#include <isa/isavar.h> +#include <isa/isareg.h> + +static int fdc_isa_probe(device_t); +static void fdctl_wr_isa(fdc_p, u_int8_t); + +static struct isa_pnp_id fdc_ids[] = { + {0x0007d041, "PC standard floppy disk controller"}, /* PNP0700 */ + {0x0107d041, "Standard floppy controller supporting MS Device Bay Spec"}, /* PNP0701 */ + {0} +}; + +static void +fdctl_wr_isa(fdc_p fdc, u_int8_t v) +{ + bus_space_write_1(fdc->ctlt, fdc->ctlh, 0, v); +} + +static int +fdc_isa_probe(device_t dev) +{ + int error, ic_type; + struct fdc_data *fdc; + + fdc = device_get_softc(dev); + bzero(fdc, sizeof *fdc); + fdc->fdc_dev = dev; + fdc->fdctl_wr = fdctl_wr_isa; + + /* Check pnp ids */ + error = ISA_PNP_PROBE(device_get_parent(dev), dev, fdc_ids); + if (error == ENXIO) + return ENXIO; + if (error == 0) + fdc->flags |= FDC_ISPNP; + + /* Attempt to allocate our resources for the duration of the probe */ + error = fdc_alloc_resources(fdc); + if (error) + goto out; + + /* First - lets reset the floppy controller */ + fdout_wr(fdc, 0); + DELAY(100); + fdout_wr(fdc, FDO_FRST); + + /* see if it can handle a command */ + if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), + NE7_SPEC_2(2, 0), 0)) { + error = ENXIO; + goto out; + } + + if (fd_cmd(fdc, 1, NE7CMD_VERSION, 1, &ic_type) == 0) { + ic_type = (u_char)ic_type; + switch (ic_type) { + case 0x80: + device_set_desc(dev, "NEC 765 or clone"); + fdc->fdct = FDC_NE765; + break; + case 0x81: /* not mentioned in any hardware doc */ + case 0x90: + device_set_desc(dev, + "Enhanced floppy controller (i82077, NE72065 or clone)"); + fdc->fdct = FDC_ENHANCED; + break; + default: + device_set_desc(dev, "Generic floppy controller"); + fdc->fdct = FDC_UNKNOWN; + break; + } + } + +out: + fdc_release_resources(fdc); + return (error); +} + +static device_method_t fdc_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, fdc_isa_probe), + DEVMETHOD(device_attach, fdc_attach), + DEVMETHOD(device_detach, fdc_detach), + DEVMETHOD(device_shutdown, bus_generic_shutdown), + DEVMETHOD(device_suspend, bus_generic_suspend), + DEVMETHOD(device_resume, bus_generic_resume), + + /* Bus interface */ + DEVMETHOD(bus_print_child, fdc_print_child), + DEVMETHOD(bus_read_ivar, fdc_read_ivar), + /* Our children never use any other bus interface methods. */ + + { 0, 0 } +}; + +static driver_t fdc_driver = { + "fdc", + fdc_methods, + sizeof(struct fdc_data) +}; + +DRIVER_MODULE(fdc, isa, fdc_driver, fdc_devclass, 0, 0); +DRIVER_MODULE(fdc, acpi, fdc_driver, fdc_devclass, 0, 0); |
