19d3b47b92
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
177 lines
4.6 KiB
C
177 lines
4.6 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2009 M. Warner Losh <imp@FreeBSD.org>
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* Copyright (c) 2006 Wojciech A. Koszek <wkoszek@FreeBSD.org>
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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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* 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 AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id$
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*/
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#include "opt_uart.h"
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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 <sys/cons.h>
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#include <machine/bus.h>
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#include <dev/uart/uart.h>
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#include <dev/uart/uart_cpu.h>
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#include <mips/cavium/octeon_pcmap_regs.h>
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#include <contrib/octeon-sdk/cvmx.h>
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bus_space_tag_t uart_bus_space_io;
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bus_space_tag_t uart_bus_space_mem;
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/*
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* Specailized uart bus space. We present a 1 apart byte oriented
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* bus to the outside world, but internally translate to/from the 8-apart
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* 64-bit word bus that's on the octeon. We only support simple read/write
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* in this space. Everything else is undefined.
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*/
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static uint8_t
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ou_bs_r_1(void *t, bus_space_handle_t handle, bus_size_t offset)
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{
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return (cvmx_read64_uint64(handle + offset));
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}
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static uint16_t
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ou_bs_r_2(void *t, bus_space_handle_t handle, bus_size_t offset)
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{
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return (cvmx_read64_uint64(handle + offset));
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}
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static uint32_t
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ou_bs_r_4(void *t, bus_space_handle_t handle, bus_size_t offset)
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{
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return (cvmx_read64_uint64(handle + offset));
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}
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static uint64_t
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ou_bs_r_8(void *t, bus_space_handle_t handle, bus_size_t offset)
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{
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return (cvmx_read64_uint64(handle + offset));
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}
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static void
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ou_bs_w_1(void *t, bus_space_handle_t bsh, bus_size_t offset, uint8_t value)
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{
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cvmx_write64_uint64(bsh + offset, value);
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}
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static void
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ou_bs_w_2(void *t, bus_space_handle_t bsh, bus_size_t offset, uint16_t value)
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{
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cvmx_write64_uint64(bsh + offset, value);
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}
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static void
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ou_bs_w_4(void *t, bus_space_handle_t bsh, bus_size_t offset, uint32_t value)
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{
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cvmx_write64_uint64(bsh + offset, value);
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}
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static void
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ou_bs_w_8(void *t, bus_space_handle_t bsh, bus_size_t offset, uint64_t value)
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{
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cvmx_write64_uint64(bsh + offset, value);
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}
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struct bus_space octeon_uart_tag = {
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.bs_map = generic_bs_map,
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.bs_unmap = generic_bs_unmap,
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.bs_subregion = generic_bs_subregion,
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.bs_barrier = generic_bs_barrier,
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.bs_r_1 = ou_bs_r_1,
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.bs_r_2 = ou_bs_r_2,
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.bs_r_4 = ou_bs_r_4,
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.bs_r_8 = ou_bs_r_8,
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.bs_w_1 = ou_bs_w_1,
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.bs_w_2 = ou_bs_w_2,
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.bs_w_4 = ou_bs_w_4,
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.bs_w_8 = ou_bs_w_8,
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};
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extern struct uart_class uart_oct16550_class;
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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 uart_class *class = &uart_oct16550_class;
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/*
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* These fields need to be setup corretly for uart_getenv to
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* work in all cases.
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*/
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uart_bus_space_io = NULL; /* No io map for this device */
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uart_bus_space_mem = &octeon_uart_tag;
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di->bas.bst = uart_bus_space_mem;
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/*
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* If env specification for UART exists it takes precedence:
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* hw.uart.console="mm:0xf1012000" or similar
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*/
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if (uart_getenv(devtype, di, class) == 0)
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return (0);
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/*
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* Fallback to UART0 for console.
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*/
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di->ops = uart_getops(class);
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di->bas.chan = 0;
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/* XXX */
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if (bus_space_map(di->bas.bst, CVMX_MIO_UARTX_RBR(0),
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uart_getrange(class), 0, &di->bas.bsh) != 0)
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return (ENXIO);
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di->bas.regshft = 3;
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di->bas.rclk = 0;
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di->baudrate = 115200;
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di->databits = 8;
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di->stopbits = 1;
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di->parity = UART_PARITY_NONE;
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return (0);
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}
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