uart_cpu_ia64.c

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    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 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/uart/uart_cpu_ia64.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/uart/uart_cpu_ia64.c