1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2004-2005 M. Warner Losh. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 /* XXX should audit this file to see if additional copyrights needed */ 32 33 enum fdc_type { 34 FDC_NE765, FDC_ENHANCED, FDC_UNKNOWN = -1 35 }; 36 37 /* 38 * Per controller structure (softc). 39 */ 40 struct fdc_data { 41 int fdcu; /* our unit number */ 42 int dmachan; 43 int flags; 44 #define FDC_HASDMA 0x01 45 #define FDC_STAT_VALID 0x08 46 #define FDC_HAS_FIFO 0x10 47 #define FDC_NEEDS_RESET 0x20 48 #define FDC_NODMA 0x40 /* Don't do DMA */ 49 #define FDC_NOFAST 0x80 /* Don't register isr as a fast one */ 50 #define FDC_KTHREAD_EXIT 0x1000 /* request worker thread to stop */ 51 #define FDC_KTHREAD_ALIVE 0x2000 /* worker thread is alive */ 52 struct fd_data *fd; /* The active drive */ 53 int retry; 54 int fdout; /* mirror of the w/o digital output reg */ 55 u_int status[7]; /* copy of the registers */ 56 enum fdc_type fdct; /* chip version of FDC */ 57 int fdc_errs; /* number of logged errors */ 58 struct bio_queue_head head; 59 struct bio *bp; /* active buffer */ 60 struct resource *res_irq, *res_drq; 61 int rid_irq, rid_drq; 62 #define FDC_MAXREG 8 63 int ridio[FDC_MAXREG]; 64 struct resource *resio[FDC_MAXREG]; 65 bus_space_tag_t iot; 66 bus_space_handle_t ioh[FDC_MAXREG]; 67 int ioff[FDC_MAXREG]; 68 void *fdc_intr; 69 device_t fdc_dev; 70 struct mtx fdc_mtx; 71 struct proc *fdc_thread; 72 }; 73 74 extern devclass_t fdc_devclass; 75 76 enum fdc_device_ivars { 77 FDC_IVAR_FDUNIT, 78 FDC_IVAR_FDTYPE, 79 }; 80 81 __BUS_ACCESSOR(fdc, fdunit, FDC, FDUNIT, int); 82 __BUS_ACCESSOR(fdc, fdtype, FDC, FDTYPE, int); 83 84 void fdc_release_resources(struct fdc_data *); 85 int fdc_attach(device_t); 86 void fdc_start_worker(device_t); 87 int fdc_hints_probe(device_t); 88 int fdc_detach(device_t dev); 89 device_t fdc_add_child(device_t, const char *, int); 90 int fdc_initial_reset(device_t, struct fdc_data *); 91 int fdc_print_child(device_t, device_t); 92 int fdc_read_ivar(device_t, device_t, int, uintptr_t *); 93 int fdc_write_ivar(device_t, device_t, int, uintptr_t); 94 int fdc_isa_alloc_resources(device_t, struct fdc_data *); 95