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