1194140Simp/*- 2199738Simp * Copyright (c) 2009 M. Warner Losh <imp@FreeBSD.org> 3194140Simp * Copyright (c) 2006 Wojciech A. Koszek <wkoszek@FreeBSD.org> 4194140Simp * All rights reserved. 5194140Simp * 6194140Simp * Redistribution and use in source and binary forms, with or without 7194140Simp * modification, are permitted provided that the following conditions 8194140Simp * are met: 9194140Simp * 1. Redistributions of source code must retain the above copyright 10194140Simp * notice, this list of conditions and the following disclaimer. 11194140Simp * 2. Redistributions in binary form must reproduce the above copyright 12194140Simp * notice, this list of conditions and the following disclaimer in the 13194140Simp * documentation and/or other materials provided with the distribution. 14194140Simp * 15194140Simp * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16194140Simp * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17194140Simp * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18194140Simp * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19194140Simp * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20194140Simp * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21194140Simp * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22194140Simp * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23194140Simp * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24194140Simp * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25194140Simp * SUCH DAMAGE. 26194140Simp * 27194140Simp * $Id$ 28194140Simp */ 29194140Simp#include "opt_uart.h" 30194140Simp 31194140Simp#include <sys/cdefs.h> 32194140Simp__FBSDID("$FreeBSD$"); 33194140Simp 34194140Simp#include <sys/param.h> 35194140Simp#include <sys/systm.h> 36194140Simp#include <sys/bus.h> 37194140Simp#include <sys/cons.h> 38194140Simp 39194140Simp#include <machine/bus.h> 40194140Simp 41194140Simp#include <dev/uart/uart.h> 42194140Simp#include <dev/uart/uart_cpu.h> 43194140Simp 44202063Simp#include <mips/cavium/octeon_pcmap_regs.h> 45194140Simp 46210311Sjmallett#include <contrib/octeon-sdk/cvmx.h> 47210311Sjmallett 48196259Simpbus_space_tag_t uart_bus_space_io; 49196259Simpbus_space_tag_t uart_bus_space_mem; 50196259Simp 51199738Simp/* 52199738Simp * Specailized uart bus space. We present a 1 apart byte oriented 53199738Simp * bus to the outside world, but internally translate to/from the 8-apart 54199738Simp * 64-bit word bus that's on the octeon. We only support simple read/write 55199738Simp * in this space. Everything else is undefined. 56199738Simp */ 57199738Simpstatic uint8_t 58199738Simpou_bs_r_1(void *t, bus_space_handle_t handle, bus_size_t offset) 59199738Simp{ 60199738Simp 61213345Sjmallett return (oct_read64(handle + offset)); 62199738Simp} 63199738Simp 64199738Simpstatic uint16_t 65199738Simpou_bs_r_2(void *t, bus_space_handle_t handle, bus_size_t offset) 66199738Simp{ 67199738Simp 68213345Sjmallett return (oct_read64(handle + offset)); 69199738Simp} 70199738Simp 71199738Simpstatic uint32_t 72199738Simpou_bs_r_4(void *t, bus_space_handle_t handle, bus_size_t offset) 73199738Simp{ 74199738Simp 75213345Sjmallett return (oct_read64(handle + offset)); 76199738Simp} 77199738Simp 78199738Simpstatic uint64_t 79199738Simpou_bs_r_8(void *t, bus_space_handle_t handle, bus_size_t offset) 80199738Simp{ 81199738Simp 82213345Sjmallett return (oct_read64(handle + offset)); 83199738Simp} 84199738Simp 85199738Simpstatic void 86199738Simpou_bs_w_1(void *t, bus_space_handle_t bsh, bus_size_t offset, uint8_t value) 87199738Simp{ 88199738Simp 89213345Sjmallett oct_write64(bsh + offset, value); 90199738Simp} 91199738Simp 92199738Simpstatic void 93199738Simpou_bs_w_2(void *t, bus_space_handle_t bsh, bus_size_t offset, uint16_t value) 94199738Simp{ 95199738Simp 96213345Sjmallett oct_write64(bsh + offset, value); 97199738Simp} 98199738Simp 99199738Simpstatic void 100199738Simpou_bs_w_4(void *t, bus_space_handle_t bsh, bus_size_t offset, uint32_t value) 101199738Simp{ 102199738Simp 103213345Sjmallett oct_write64(bsh + offset, value); 104199738Simp} 105199738Simp 106199738Simpstatic void 107199738Simpou_bs_w_8(void *t, bus_space_handle_t bsh, bus_size_t offset, uint64_t value) 108199738Simp{ 109199738Simp 110213345Sjmallett oct_write64(bsh + offset, value); 111199738Simp} 112199738Simp 113202985Simpstruct bus_space octeon_uart_tag = { 114199738Simp .bs_map = generic_bs_map, 115199738Simp .bs_unmap = generic_bs_unmap, 116199738Simp .bs_subregion = generic_bs_subregion, 117199738Simp .bs_barrier = generic_bs_barrier, 118199738Simp .bs_r_1 = ou_bs_r_1, 119199738Simp .bs_r_2 = ou_bs_r_2, 120199738Simp .bs_r_4 = ou_bs_r_4, 121199738Simp .bs_r_8 = ou_bs_r_8, 122199738Simp .bs_w_1 = ou_bs_w_1, 123199738Simp .bs_w_2 = ou_bs_w_2, 124199738Simp .bs_w_4 = ou_bs_w_4, 125199738Simp .bs_w_8 = ou_bs_w_8, 126199738Simp}; 127199738Simp 128194175Simpextern struct uart_class uart_oct16550_class; 129194140Simp 130194140Simpint 131194140Simpuart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2) 132194140Simp{ 133199738Simp 134194140Simp return ((b1->bsh == b2->bsh && b1->bst == b2->bst) ? 1 : 0); 135194140Simp} 136194140Simp 137194140Simpint 138194140Simpuart_cpu_getdev(int devtype, struct uart_devinfo *di) 139194140Simp{ 140199738Simp struct uart_class *class = &uart_oct16550_class; 141194175Simp 142199738Simp /* 143199738Simp * These fields need to be setup corretly for uart_getenv to 144199738Simp * work in all cases. 145199738Simp */ 146199738Simp uart_bus_space_io = NULL; /* No io map for this device */ 147199738Simp uart_bus_space_mem = &octeon_uart_tag; 148199738Simp di->bas.bst = uart_bus_space_mem; 149199738Simp 150199738Simp /* 151199738Simp * If env specification for UART exists it takes precedence: 152199738Simp * hw.uart.console="mm:0xf1012000" or similar 153199738Simp */ 154199738Simp if (uart_getenv(devtype, di, class) == 0) 155199738Simp return (0); 156199738Simp 157199738Simp /* 158199738Simp * Fallback to UART0 for console. 159199738Simp */ 160194175Simp di->ops = uart_getops(class); 161194140Simp di->bas.chan = 0; 162210311Sjmallett /* XXX */ 163213345Sjmallett if (bus_space_map(di->bas.bst, CVMX_MIO_UARTX_RBR(0), 164213345Sjmallett uart_getrange(class), 0, &di->bas.bsh) != 0) 165199738Simp return (ENXIO); 166213345Sjmallett di->bas.regshft = 3; 167194140Simp di->bas.rclk = 0; 168194140Simp di->baudrate = 115200; 169194140Simp di->databits = 8; 170194140Simp di->stopbits = 1; 171194140Simp di->parity = UART_PARITY_NONE; 172194140Simp 173194140Simp return (0); 174194140Simp} 175