6d6fa4fdc9
step in making this driver more attachment neutral. Others plan on adding acpi front ends. Still need to cleanup the MI part of the driver because it isn't as bus independent as it could be.
135 lines
3.6 KiB
C
135 lines
3.6 KiB
C
/*
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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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int fdout; /* mirror of the w/o digital output reg */
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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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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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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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bus_space_tag_t ctlt;
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bus_space_handle_t ctlh;
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void *fdc_intr;
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struct device *fdc_dev;
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void (*fdctl_wr)(struct fdc_data *fdc, u_int8_t v);
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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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void fdout_wr(fdc_p, u_int8_t);
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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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