1 /*- 2 * Copyright (c) 2004 M. Warner Losh. 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 * without modification, immediately at the beginning of the file. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in 13 * the documentation and/or other materials provided with the 14 * 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 FOR 20 * 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 { 35 FDC_NE765, FDC_ENHANCED, FDC_UNKNOWN = -1 36 }; 37 38 enum fdc_states { 39 DEVIDLE, 40 FINDWORK, 41 DOSEEK, 42 SEEKCOMPLETE , 43 IOCOMPLETE, 44 RECALCOMPLETE, 45 STARTRECAL, 46 RESETCTLR, 47 SEEKWAIT, 48 RECALWAIT, 49 MOTORWAIT, 50 IOTIMEDOUT, 51 RESETCOMPLETE, 52 PIOREAD 53 }; 54 55 #ifdef FDC_DEBUG 56 static char const * const fdstates[] = { 57 "DEVIDLE", 58 "FINDWORK", 59 "DOSEEK", 60 "SEEKCOMPLETE", 61 "IOCOMPLETE", 62 "RECALCOMPLETE", 63 "STARTRECAL", 64 "RESETCTLR", 65 "SEEKWAIT", 66 "RECALWAIT", 67 "MOTORWAIT", 68 "IOTIMEDOUT", 69 "RESETCOMPLETE", 70 "PIOREAD" 71 }; 72 #endif 73 74 /* 75 * Per controller structure (softc). 76 */ 77 struct fdc_data 78 { 79 int fdcu; /* our unit number */ 80 int dmacnt; 81 int dmachan; 82 int flags; 83 #define FDC_STAT_VALID 0x08 84 #define FDC_HAS_FIFO 0x10 85 #define FDC_NEEDS_RESET 0x20 86 #define FDC_NODMA 0x40 87 #define FDC_ISPNP 0x80 88 #define FDC_ISPCMCIA 0x100 89 struct fd_data *fd; 90 int fdu; /* the active drive */ 91 enum fdc_states state; 92 int retry; 93 int fdout; /* mirror of the w/o digital output reg */ 94 u_int status[7]; /* copy of the registers */ 95 enum fdc_type fdct; /* chip version of FDC */ 96 int fdc_errs; /* number of logged errors */ 97 int dma_overruns; /* number of DMA overruns */ 98 struct bio_queue_head head; 99 struct bio *bp; /* active buffer */ 100 struct resource *res_ioport, *res_ctl, *res_irq, *res_drq; 101 int rid_ioport, rid_ctl, rid_irq, rid_drq; 102 int port_off; 103 bus_space_tag_t portt; 104 bus_space_handle_t porth; 105 bus_space_tag_t ctlt; 106 bus_space_handle_t ctlh; 107 void *fdc_intr; 108 struct device *fdc_dev; 109 void (*fdctl_wr)(struct fdc_data *fdc, u_int8_t v); 110 }; 111 112 typedef int fdu_t; 113 typedef int fdcu_t; 114 typedef int fdsu_t; 115 typedef struct fd_data *fd_p; 116 typedef struct fdc_data *fdc_p; 117 typedef enum fdc_type fdc_t; 118 119 /* error returns for fd_cmd() */ 120 #define FD_FAILED -1 121 #define FD_NOT_VALID -2 122 #define FDC_ERRMAX 100 /* do not log more */ 123 124 extern devclass_t fdc_devclass; 125 126 enum fdc_device_ivars { 127 FDC_IVAR_FDUNIT, 128 FDC_IVAR_FDTYPE, 129 }; 130 131 __BUS_ACCESSOR(fdc, fdunit, FDC, FDUNIT, int); 132 __BUS_ACCESSOR(fdc, fdtype, FDC, FDTYPE, int); 133 134 int fdc_alloc_resources(struct fdc_data *); 135 void fdout_wr(fdc_p, u_int8_t); 136 int fd_cmd(struct fdc_data *, int, ...); 137 void fdc_release_resources(struct fdc_data *); 138 int fdc_attach(device_t); 139 int fdc_hints_probe(device_t); 140 int fdc_detach(device_t dev); 141 device_t fdc_add_child(device_t, const char *, int); 142 int fdc_initial_reset(struct fdc_data *); 143 int fdc_print_child(device_t, device_t); 144 int fdc_read_ivar(device_t, device_t, int, uintptr_t *); 145 int fdc_write_ivar(device_t, device_t, int, uintptr_t); 146 int fdc_isa_alloc_resources(device_t, struct fdc_data *); 147