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- Copy stable/9 to releng/9.2 as part of the 9.2-RELEASE cycle.
[FreeBSD/releng/9.2.git] / sys / dev / uart / uart_cpu_ia64.c
1 /*-
2  * Copyright (c) 2003, 2004 Marcel Moolenaar
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  *
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 ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/bus.h>
33
34 #include <machine/bus.h>
35 #include <machine/dig64.h>
36 #include <machine/md_var.h>
37 #include <machine/vmparam.h>
38
39 #include <dev/uart/uart.h>
40 #include <dev/uart/uart_cpu.h>
41
42 bus_space_tag_t uart_bus_space_io = IA64_BUS_SPACE_IO;
43 bus_space_tag_t uart_bus_space_mem = IA64_BUS_SPACE_MEM;
44
45 static int dig64_to_uart_parity[] = {
46         UART_PARITY_NONE, UART_PARITY_NONE, UART_PARITY_EVEN,
47         UART_PARITY_ODD, UART_PARITY_MARK, UART_PARITY_SPACE
48 };
49
50 int
51 uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
52 {
53
54         return ((b1->bsh == b2->bsh && b1->bst == b2->bst) ? 1 : 0);
55 }
56
57 int
58 uart_cpu_getdev(int devtype, struct uart_devinfo *di)
59 {
60         struct dig64_hcdp_table *tbl;
61         struct dig64_hcdp_entry *ent;
62         struct uart_class *class;
63         bus_addr_t addr;
64         uint64_t hcdp;
65         unsigned int i;
66
67         class = &uart_ns8250_class;
68         if (class == NULL)
69                 return (ENXIO);
70
71         /*
72          * Use the DIG64 HCDP table if present.
73          */
74         hcdp = ia64_get_hcdp();
75         if (hcdp != 0) {
76                 tbl = (void*)IA64_PHYS_TO_RR7(hcdp);
77                 for (i = 0; i < tbl->entries; i++) {
78                         ent = tbl->entry + i;
79
80                         if (devtype == UART_DEV_CONSOLE &&
81                             ent->type != DIG64_HCDP_CONSOLE)
82                                 continue;
83
84                         if (devtype == UART_DEV_DBGPORT &&
85                             ent->type != DIG64_HCDP_DBGPORT)
86                                 continue;
87
88                         addr = ent->address.addr_high;
89                         addr = (addr << 32) + ent->address.addr_low;
90                         di->ops = uart_getops(class);
91                         di->bas.chan = 0;
92                         di->bas.bst = (ent->address.addr_space == 0)
93                             ? uart_bus_space_mem : uart_bus_space_io;
94                         if (bus_space_map(di->bas.bst, addr,
95                             uart_getrange(class), 0, &di->bas.bsh) != 0)
96                                 continue;
97                         di->bas.regshft = 0;
98                         di->bas.rclk = ent->pclock << 4;
99                         /* We don't deal with 64-bit baud rates. */
100                         di->baudrate = ent->baud_low;
101                         di->databits = ent->databits;
102                         di->stopbits = ent->stopbits;
103                         di->parity = (ent->parity >= 6) ? UART_PARITY_NONE
104                             : dig64_to_uart_parity[ent->parity];
105                         return (0);
106                 }
107
108                 /* FALLTHROUGH */
109         }
110
111         /* Check the environment. */
112         return (uart_getenv(devtype, di, class));
113 }