154 lines
4.0 KiB
C
154 lines
4.0 KiB
C
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/*
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* Copyright (c) 2004 M. Warner Losh.
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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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* without modification, immediately at the beginning of the file.
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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
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* the documentation and/or other materials provided with the
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* 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 FOR
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* 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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/* XXX should audit this file to see if additional copyrights needed */
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enum fdc_type
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{
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FDC_NE765, FDC_ENHANCED, FDC_UNKNOWN = -1
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};
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enum fdc_states {
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DEVIDLE,
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FINDWORK,
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DOSEEK,
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SEEKCOMPLETE ,
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IOCOMPLETE,
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RECALCOMPLETE,
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STARTRECAL,
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RESETCTLR,
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SEEKWAIT,
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RECALWAIT,
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MOTORWAIT,
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IOTIMEDOUT,
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RESETCOMPLETE,
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PIOREAD
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};
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#ifdef FDC_DEBUG
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static char const * const fdstates[] = {
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"DEVIDLE",
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"FINDWORK",
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"DOSEEK",
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"SEEKCOMPLETE",
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"IOCOMPLETE",
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"RECALCOMPLETE",
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"STARTRECAL",
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"RESETCTLR",
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"SEEKWAIT",
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"RECALWAIT",
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"MOTORWAIT",
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"IOTIMEDOUT",
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"RESETCOMPLETE",
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"PIOREAD"
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};
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#endif
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/*
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* Per controller structure (softc).
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*/
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struct fdc_data
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{
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int fdcu; /* our unit number */
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int dmacnt;
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int dmachan;
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int flags;
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#define FDC_ATTACHED 0x01
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#define FDC_STAT_VALID 0x08
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#define FDC_HAS_FIFO 0x10
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#define FDC_NEEDS_RESET 0x20
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#define FDC_NODMA 0x40
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#define FDC_ISPNP 0x80
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#define FDC_ISPCMCIA 0x100
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struct fd_data *fd;
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int fdu; /* the active drive */
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enum fdc_states state;
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int retry;
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#ifndef PC98
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int fdout; /* mirror of the w/o digital output reg */
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#endif
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u_int status[7]; /* copy of the registers */
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enum fdc_type fdct; /* chip version of FDC */
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int fdc_errs; /* number of logged errors */
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int dma_overruns; /* number of DMA overruns */
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struct bio_queue_head head;
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struct bio *bp; /* active buffer */
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#ifdef PC98
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struct resource *res_ioport, *res_fdsio, *res_fdemsio;
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struct resource *res_irq, *res_drq;
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int rid_ioport, rid_irq, rid_drq;
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#else
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struct resource *res_ioport, *res_ctl, *res_irq, *res_drq;
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int rid_ioport, rid_ctl, rid_irq, rid_drq;
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#endif
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int port_off;
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bus_space_tag_t portt;
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bus_space_handle_t porth;
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#ifdef PC98
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bus_space_tag_t sc_fdsiot;
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bus_space_handle_t sc_fdsioh;
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bus_space_tag_t sc_fdemsiot;
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bus_space_handle_t sc_fdemsioh;
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#else
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bus_space_tag_t ctlt;
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bus_space_handle_t ctlh;
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#endif
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void *fdc_intr;
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struct device *fdc_dev;
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#ifndef PC98
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void (*fdctl_wr)(struct fdc_data *fdc, u_int8_t v);
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#endif
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};
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typedef int fdu_t;
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typedef int fdcu_t;
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typedef int fdsu_t;
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typedef struct fd_data *fd_p;
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typedef struct fdc_data *fdc_p;
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typedef enum fdc_type fdc_t;
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/* error returns for fd_cmd() */
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#define FD_FAILED -1
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#define FD_NOT_VALID -2
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#define FDC_ERRMAX 100 /* do not log more */
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extern devclass_t fdc_devclass;
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int fdc_alloc_resources(struct fdc_data *);
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#ifndef PC98
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void fdout_wr(fdc_p, u_int8_t);
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#endif
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int fd_cmd(struct fdc_data *, int, ...);
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void fdc_release_resources(struct fdc_data *);
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int fdc_attach(device_t);
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int fdc_detach(device_t dev);
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int fdc_print_child(device_t, device_t);
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int fdc_read_ivar(device_t, device_t, int, uintptr_t *);
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