2 * Copyright (c) 2004 M. Warner Losh.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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
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
31 /* XXX should audit this file to see if additional copyrights needed */
35 FDC_NE765, FDC_ENHANCED, FDC_UNKNOWN = -1
56 static char const * const fdstates[] = {
75 * Per controller structure (softc).
79 int fdcu; /* our unit number */
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
90 int fdu; /* the active drive */
91 enum fdc_states state;
94 int fdout; /* mirror of the w/o digital output reg */
96 u_int status[7]; /* copy of the registers */
97 enum fdc_type fdct; /* chip version of FDC */
98 int fdc_errs; /* number of logged errors */
99 int dma_overruns; /* number of DMA overruns */
100 struct bio_queue_head head;
101 struct bio *bp; /* active buffer */
103 struct resource *res_ioport, *res_fdsio, *res_fdemsio;
104 struct resource *res_irq, *res_drq;
105 int rid_ioport, rid_irq, rid_drq;
107 struct resource *res_ioport, *res_ctl, *res_irq, *res_drq;
108 int rid_ioport, rid_ctl, rid_irq, rid_drq;
111 bus_space_tag_t portt;
112 bus_space_handle_t porth;
114 bus_space_tag_t sc_fdsiot;
115 bus_space_handle_t sc_fdsioh;
116 bus_space_tag_t sc_fdemsiot;
117 bus_space_handle_t sc_fdemsioh;
119 bus_space_tag_t ctlt;
120 bus_space_handle_t ctlh;
123 struct device *fdc_dev;
125 void (*fdctl_wr)(struct fdc_data *fdc, u_int8_t v);
132 typedef struct fd_data *fd_p;
133 typedef struct fdc_data *fdc_p;
134 typedef enum fdc_type fdc_t;
136 /* error returns for fd_cmd() */
138 #define FD_NOT_VALID -2
139 #define FDC_ERRMAX 100 /* do not log more */
141 extern devclass_t fdc_devclass;
143 enum fdc_device_ivars {
148 __BUS_ACCESSOR(fdc, fdunit, FDC, FDUNIT, int);
149 __BUS_ACCESSOR(fdc, fdtype, FDC, FDTYPE, int);
151 int fdc_alloc_resources(struct fdc_data *);
153 void fdout_wr(fdc_p, u_int8_t);
155 int fd_cmd(struct fdc_data *, int, ...);
156 void fdc_release_resources(struct fdc_data *);
157 int fdc_attach(device_t);
158 int fdc_hints_probe(device_t);
159 int fdc_detach(device_t dev);
160 device_t fdc_add_child(device_t, const char *, int);
161 int fdc_initial_reset(struct fdc_data *);
162 int fdc_print_child(device_t, device_t);
163 int fdc_read_ivar(device_t, device_t, int, uintptr_t *);
164 int fdc_write_ivar(device_t, device_t, int, uintptr_t);
166 int fdc_isa_alloc_resources(device_t, struct fdc_data *);