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
uart_cpu_eqres(struct uart_bas * b1,struct uart_bas * b2)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
uart_cpu_getdev(int devtype,struct uart_devinfo * di)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 }
114