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