1 /*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * from: @(#)fd.c 7.4 (Berkeley) 5/25/91 34 * $FreeBSD: src/sys/isa/fdc.h,v 1.20.2.3 2002/02/03 14:08:46 nyan Exp $ 35 * $DragonFly: src/sys/dev/disk/fd/fdc.h,v 1.7 2007/05/21 04:22:23 dillon Exp $ 36 * 37 */ 38 39 enum fdc_type 40 { 41 FDC_NE765, FDC_I82077, FDC_NE72065, FDC_UNKNOWN = -1 42 }; 43 44 45 /***********************************************************************\ 46 * Per controller structure. * 47 \***********************************************************************/ 48 struct fdc_data 49 { 50 int fdcu; /* our unit number */ 51 int dmachan; 52 int flags; 53 #define FDC_ATTACHED 0x01 54 #define FDC_STAT_VALID 0x08 55 #define FDC_HAS_FIFO 0x10 56 #define FDC_NEEDS_RESET 0x20 57 #define FDC_NODMA 0x40 58 #define FDC_ISPNP 0x80 59 #define FDC_ISPCMCIA 0x100 60 struct fd_data *fd; 61 int fdu; /* the active drive */ 62 int state; 63 int retry; 64 int fdout; /* mirror of the w/o digital output reg */ 65 u_int status[7]; /* copy of the registers */ 66 enum fdc_type fdct; /* chip version of FDC */ 67 int fdc_errs; /* number of logged errors */ 68 struct bio_queue_head bio_queue; 69 struct bio *bio; /* active buffer */ 70 int dma_overruns; /* number of DMA overruns */ 71 struct resource *res_ioport, *res_ctl, *res_irq, *res_drq; 72 int rid_ioport, rid_ctl, rid_irq, rid_drq; 73 int port_off; 74 bus_space_tag_t portt; 75 bus_space_handle_t porth; 76 bus_space_tag_t ctlt; 77 bus_space_handle_t ctlh; 78 void *fdc_intr; 79 struct device *fdc_dev; 80 struct callout pseudointr_ch; 81 void (*fdctl_wr)(struct fdc_data *fdc, u_int8_t v); 82 }; 83 84 /***********************************************************************\ 85 * Throughout this file the following conventions will be used: * 86 * fd is a pointer to the fd_data struct for the drive in question * 87 * fdc is a pointer to the fdc_data struct for the controller * 88 * fdu is the floppy drive unit number * 89 * fdcu is the floppy controller unit number * 90 * fdsu is the floppy drive unit number on that controller. (sub-unit) * 91 \***********************************************************************/ 92 typedef int fdu_t; 93 typedef int fdcu_t; 94 typedef int fdsu_t; 95 typedef struct fd_data *fd_p; 96 typedef struct fdc_data *fdc_p; 97 typedef enum fdc_type fdc_t; 98 99 /* 100 * fdc maintains a set (1!) of ivars per child of each controller. 101 */ 102 enum fdc_device_ivars { 103 FDC_IVAR_FDUNIT, 104 }; 105 106 /* 107 * Simple access macros for the ivars. 108 */ 109 #define FDC_ACCESSOR(A, B, T) \ 110 static __inline T fdc_get_ ## A(device_t dev) \ 111 { \ 112 uintptr_t v; \ 113 BUS_READ_IVAR(device_get_parent(dev), dev, FDC_IVAR_ ## B, &v); \ 114 return (T) v; \ 115 } 116 FDC_ACCESSOR(fdunit, FDUNIT, int) 117 118 int fdc_alloc_resources(struct fdc_data *fdc); 119 void fdc_release_resources(struct fdc_data *fdc); 120 int fdc_attach(device_t dev); 121 int fdc_print_child(device_t me, device_t child); 122 int fdc_read_ivar(device_t dev, device_t child, int which, u_long *result); 123 void fdout_wr(fdc_p fdc, u_int8_t v); 124 int fd_cmd(struct fdc_data *fdc, int n_out, ...); 125 126 extern devclass_t fdc_devclass; 127