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John Baldwin
6cf4e30252
Some IVAR indices are special in that they have global meaning across multiple buses where as other IVARs are always private to the local bus. Try to document this a bit and add constants for the various ranges to avoid future conflicts. This is a no-op, but IVAR indices are now generally defined as enums as that makes it easier to define them in terms of ranges. Reviewed by: imp, royger, andrew Differential Revision: https://reviews.freebsd.org/D54159
90 lines
3.2 KiB
C
90 lines
3.2 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2004-2005 M. Warner Losh <[email protected]>
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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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the 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
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* FOR 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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/* XXX should audit this file to see if additional copyrights needed */
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enum fdc_type {
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FDC_NE765, FDC_ENHANCED, FDC_UNKNOWN = -1
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};
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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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int fdcu; /* our unit number */
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int dmachan;
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int flags;
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#define FDC_HASDMA 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 /* Don't do DMA */
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#define FDC_NOFAST 0x80 /* Don't register isr as a fast one */
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#define FDC_KTHREAD_EXIT 0x1000 /* request worker thread to stop */
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#define FDC_KTHREAD_ALIVE 0x2000 /* worker thread is alive */
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struct fd_data *fd; /* The active drive */
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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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struct bio_queue_head head;
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struct bio *bp; /* active buffer */
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struct resource *res_irq, *res_drq;
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int rid_irq, rid_drq;
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#define FDC_MAXREG 8
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int ridio[FDC_MAXREG];
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struct resource *resio[FDC_MAXREG];
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bus_space_tag_t iot;
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bus_space_handle_t ioh[FDC_MAXREG];
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int ioff[FDC_MAXREG];
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void *fdc_intr;
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device_t fdc_dev;
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struct mtx fdc_mtx;
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struct proc *fdc_thread;
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};
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enum fdc_device_ivars {
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FDC_IVAR_FDUNIT = BUS_IVARS_PRIVATE,
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FDC_IVAR_FDTYPE,
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};
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__BUS_ACCESSOR(fdc, fdunit, FDC, FDUNIT, int);
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__BUS_ACCESSOR(fdc, fdtype, FDC, FDTYPE, 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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void fdc_start_worker(device_t);
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int fdc_hints_probe(device_t);
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int fdc_detach(device_t dev);
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device_t fdc_add_child(device_t, const char *, int);
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int fdc_initial_reset(device_t, struct fdc_data *);
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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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int fdc_write_ivar(device_t, device_t, int, uintptr_t);
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int fdc_isa_alloc_resources(device_t, struct fdc_data *);
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