e7f46aca57
and that can be used as an identify function for all kinds of busses on a certain platform. Expect for sparc64 these are only stubs right now. [1] - For sparc64, add code to its uart_cpu_identify() for registering the on- board ISA UARTs and their resources based on information obtained from Open Firmware. It would be better if this would be done in the OFW ISA code. However, due to the common FreeBSD ISA code and PNP-IDs not always being present in the properties of the ISA nodes there seems to be no good way to implement that. Therefore special casing UARTs as the sole really relevant ISA devices on sparc64 seemed reasonable. [2] Approved by: marcel Discussed with: marcel [1], tmm [2] Tested by: make universe
113 lines
3.3 KiB
C
113 lines
3.3 KiB
C
/*
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* Copyright (c) 2003, 2004 Marcel Moolenaar
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <machine/bootinfo.h>
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#include <machine/bus.h>
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#include <machine/dig64.h>
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#include <machine/vmparam.h>
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#include <dev/uart/uart.h>
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#include <dev/uart/uart_cpu.h>
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bus_space_tag_t uart_bus_space_io = IA64_BUS_SPACE_IO;
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bus_space_tag_t uart_bus_space_mem = IA64_BUS_SPACE_MEM;
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static int dig64_to_uart_parity[] = {
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UART_PARITY_NONE, UART_PARITY_NONE, UART_PARITY_EVEN,
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UART_PARITY_ODD, UART_PARITY_MARK, UART_PARITY_SPACE
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};
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int
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uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
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{
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return ((b1->bsh == b2->bsh && b1->bst == b2->bst) ? 1 : 0);
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}
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int
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uart_cpu_getdev(int devtype, struct uart_devinfo *di)
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{
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struct dig64_hcdp_table *tbl;
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struct dig64_hcdp_entry *ent;
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bus_addr_t addr;
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unsigned int i;
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/*
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* Use the DIG64 HCDP table if present.
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*/
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if (bootinfo.bi_hcdp != 0) {
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tbl = (void*)IA64_PHYS_TO_RR7(bootinfo.bi_hcdp);
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for (i = 0; i < tbl->entries; i++) {
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ent = tbl->entry + i;
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if (devtype == UART_DEV_CONSOLE &&
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ent->type != DIG64_HCDP_CONSOLE)
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continue;
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if (devtype == UART_DEV_DBGPORT &&
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ent->type != DIG64_HCDP_DBGPORT)
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continue;
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addr = ent->address.addr_high;
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addr = (addr << 32) + ent->address.addr_low;
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di->ops = uart_ns8250_ops;
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di->bas.chan = 0;
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di->bas.bst = (ent->address.addr_space == 0)
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? uart_bus_space_mem : uart_bus_space_io;
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if (bus_space_map(di->bas.bst, addr, 8, 0,
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&di->bas.bsh) != 0)
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continue;
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di->bas.regshft = 0;
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di->bas.rclk = ent->pclock << 4;
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/* We don't deal with 64-bit baud rates. */
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di->baudrate = ent->baud_low;
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di->databits = ent->databits;
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di->stopbits = ent->stopbits;
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di->parity = (ent->parity >= 6) ? UART_PARITY_NONE
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: dig64_to_uart_parity[ent->parity];
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return (0);
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}
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/* FALLTHROUGH */
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}
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/* Check the environment. */
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return (uart_getenv(devtype, di));
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}
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void
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uart_cpu_identify(driver_t *driver, device_t parent)
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{
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}
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