diff options
Diffstat (limited to 'sys/dev/uart/uart_cpu_ia64.c')
| -rw-r--r-- | sys/dev/uart/uart_cpu_ia64.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/sys/dev/uart/uart_cpu_ia64.c b/sys/dev/uart/uart_cpu_ia64.c new file mode 100644 index 000000000000..f3523fb55b65 --- /dev/null +++ b/sys/dev/uart/uart_cpu_ia64.c @@ -0,0 +1,139 @@ +/* + * Copyright (c) 2003 Marcel Moolenaar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/bus.h> + +#include <machine/bootinfo.h> +#include <machine/bus.h> +#include <machine/dig64.h> +#include <machine/vmparam.h> + +#include <dev/uart/uart.h> +#include <dev/uart/uart_cpu.h> + +static int dig64_to_uart_parity[] = { + UART_PARITY_NONE, UART_PARITY_NONE, UART_PARITY_EVEN, + UART_PARITY_ODD, UART_PARITY_MARK, UART_PARITY_SPACE +}; + +int +uart_cpu_getdev(int devtype, struct uart_devinfo *di) +{ + struct dig64_hcdp_table *tbl; + struct dig64_hcdp_entry *ent; + unsigned int i, ivar; + + /* + * Use the DIG64 HCDP table if present. + */ + if (bootinfo.bi_hcdp != 0) { + tbl = (void*)IA64_PHYS_TO_RR7(bootinfo.bi_hcdp); + for (i = 0; i < tbl->entries; i++) { + ent = tbl->entry + i; + + if (devtype == UART_DEV_CONSOLE && + ent->type != DIG64_HCDP_CONSOLE) + continue; + + if (devtype == UART_DEV_DBGPORT && + ent->type != DIG64_HCDP_DBGPORT) + continue; + + di->ops = uart_ns8250_ops; + di->bas.bst = IA64_BUS_SPACE_IO; + di->bas.bst = (ent->address.addr_space == 0) + ? IA64_BUS_SPACE_MEM : IA64_BUS_SPACE_IO; + di->bas.bsh = ent->address.addr_high; + di->bas.bsh = (di->bas.bsh << 32) + + ent->address.addr_low; + di->bas.regshft = 0; + di->bas.rclk = ent->pclock << 4; + /* We don't deal with 64-bit baud rates. */ + di->baudrate = ent->baud_low; + di->databits = ent->databits; + di->stopbits = ent->stopbits; + di->parity = (ent->parity >= 6) ? UART_PARITY_NONE + : dig64_to_uart_parity[ent->parity]; + return (0); + } + + /* FALLTHROUGH */ + } + + /* + * Scan the hints for backward compatibility. We only try units + * 0 to 3 (inclusive). This covers the ISA legacy where 4 UARTs + * had their resources predefined. + */ + for (i = 0; i < 4; i++) { + if (resource_int_value("uart", i, "flags", &ivar)) + continue; + if (devtype == UART_DEV_CONSOLE && !UART_FLAGS_CONSOLE(ivar)) + continue; + if (devtype == UART_DEV_DBGPORT && !UART_FLAGS_DBGPORT(ivar)) + continue; + /* + * We have a possible device. Make sure it's enabled and + * that we have an I/O port. + */ + if (resource_int_value("uart", i, "disabled", &ivar) == 0 && + ivar != 0) + continue; + if (resource_int_value("uart", i, "port", &ivar) != 0 || + ivar == 0) + continue; + /* + * Got it. Fill in the instance and return it. We only have + * ns8250 and successors on i386. + */ + di->ops = uart_ns8250_ops; + di->bas.bst = IA64_BUS_SPACE_IO; + di->bas.bsh = ivar; + di->bas.regshft = 0; + di->bas.rclk = 0; + if (resource_int_value("uart", i, "baud", &ivar) != 0) + ivar = 0; + di->baudrate = ivar; + di->databits = 8; + di->stopbits = 1; + di->parity = UART_PARITY_NONE; + return (0); + } + + return (ENXIO); +} + +int +uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2) +{ + + return ((b1->bsh == b2->bsh && b1->bst == b2->bst) ? 1 : 0); +} |