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.

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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: head/sys/dev/uart/uart_cpu_ia64.c 127215 2004-03-20 02:14:02Z marcel $");
29
30#include <sys/param.h>
31#include <sys/systm.h>
32#include <sys/bus.h>
33
34#include <machine/bootinfo.h>
35#include <machine/bus.h>
36#include <machine/dig64.h>
37#include <machine/vmparam.h>
38
39#include <dev/uart/uart.h>
40#include <dev/uart/uart_cpu.h>
41
42bus_space_tag_t uart_bus_space_io = IA64_BUS_SPACE_IO;
43bus_space_tag_t uart_bus_space_mem = IA64_BUS_SPACE_MEM;
44
45static 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
50int
51uart_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
57int
58uart_cpu_getdev(int devtype, struct uart_devinfo *di)
59{
60 struct dig64_hcdp_table *tbl;
61 struct dig64_hcdp_entry *ent;
62 bus_addr_t addr;
63 unsigned int i;
64
65 /*
66 * Use the DIG64 HCDP table if present.
67 */
68 if (bootinfo.bi_hcdp != 0) {
69 tbl = (void*)IA64_PHYS_TO_RR7(bootinfo.bi_hcdp);
70 for (i = 0; i < tbl->entries; i++) {
71 ent = tbl->entry + i;

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78 ent->type != DIG64_HCDP_DBGPORT)
79 continue;
80
81 addr = ent->address.addr_high;
82 addr = (addr << 32) + ent->address.addr_low;
83 di->ops = uart_ns8250_ops;
84 di->bas.chan = 0;
85 di->bas.bst = (ent->address.addr_space == 0)
86 ? uart_bus_space_mem : uart_bus_space_io;
87 if (bus_space_map(di->bas.bst, addr, 8, 0,
88 &di->bas.bsh) != 0)
89 continue;
90 di->bas.regshft = 0;
91 di->bas.rclk = ent->pclock << 4;
92 /* We don't deal with 64-bit baud rates. */
93 di->baudrate = ent->baud_low;
94 di->databits = ent->databits;
95 di->stopbits = ent->stopbits;
96 di->parity = (ent->parity >= 6) ? UART_PARITY_NONE
97 : dig64_to_uart_parity[ent->parity];
98 return (0);
99 }
100
101 /* FALLTHROUGH */
102 }
103
104 /* Check the environment. */
105 return (uart_getenv(devtype, di));
106}