160 lines
4.4 KiB
C
160 lines
4.4 KiB
C
/* $NetBSD: init_bcm43xx.c,v 1.6 2023/02/07 20:45:44 mlelstv Exp $ */
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/*-
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* Copyright (c) 2017 Nathanial Sloss <nathanialsloss@yahoo.com.au>
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* All rights reserved.
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*
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* Copyright (c) 2008 Iain Hibbert
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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 ``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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/*
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* init information in this file gleaned from hciattach(8)
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* command from BlueZ for Linux - see http://www.bluez.org/
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*/
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#include <sys/cdefs.h>
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__RCSID("$NetBSD: init_bcm43xx.c,v 1.6 2023/02/07 20:45:44 mlelstv Exp $");
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#include <sys/param.h>
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#include <bluetooth.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <termios.h>
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#include <unistd.h>
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#include "btattach.h"
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#include "firmload.h"
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#define HCI_CMD_BCM43XX_SET_UART_BAUD_RATE \
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HCI_OPCODE(HCI_OGF_VENDOR, 0x018)
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#define HCI_CMD_BCM43XX_SET_BDADDR \
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HCI_OPCODE(HCI_OGF_VENDOR, 0x006)
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#define HCI_CMD_BCM43XX_SET_CLOCK \
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HCI_OPCODE(HCI_OGF_VENDOR, 0x045)
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#define HCI_CMD_43XXFWDN \
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HCI_OPCODE(HCI_OGF_VENDOR, 0x02e)
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#define HCI_CMD_GET_LOCAL_NAME 0x0c14
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#define BCM43XX_CLK_48 1
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#define BCM43XX_CLK_24 2
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static int
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bcm43xx_get_local_name(int fd, char *name, size_t namelen)
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{
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char buf[256];
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size_t len;
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memset(buf, 0, sizeof(buf));
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uart_send_cmd(fd, HCI_CMD_GET_LOCAL_NAME, NULL, 0);
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len = uart_recv_cc(fd, HCI_CMD_GET_LOCAL_NAME, buf, sizeof(buf));
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if (len == 0)
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return EIO;
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strlcpy(name, &buf[1], MIN(len - 1, namelen));
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if (strlen(name) == 0)
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return EIO;
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return 0;
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}
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void
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init_bcm43xx(int fd, unsigned int speed)
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{
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uint8_t rate[6], clock;
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uint8_t fw_buf[1024];
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int fwfd, fw_len;
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uint8_t resp[7];
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uint16_t fw_cmd;
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char local_name[256];
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char fw[260];
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memset(rate, 0, sizeof(rate));
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memset(local_name, 0, sizeof(local_name));
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if (uart_send_cmd(fd, HCI_CMD_RESET, NULL, 0))
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return;
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uart_recv_cc(fd, HCI_CMD_RESET, &resp, sizeof(resp));
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/* assume it succeeded? */
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if (bcm43xx_get_local_name(fd, local_name, sizeof(local_name)) != 0) {
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fprintf(stderr, "Couldn't read local name\n");
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return;
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}
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snprintf(fw, sizeof(fw), "%s.hcd", local_name);
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fwfd = firmware_open("bcm43xx", fw);
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if (fwfd < 0) {
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fprintf(stderr, "Unable to open firmware bcm43xx/%s: %s\n",
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fw, strerror(errno));
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return;
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}
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uart_send_cmd(fd, HCI_CMD_43XXFWDN, NULL, 0);
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uart_recv_cc(fd, HCI_CMD_43XXFWDN, &resp, sizeof(resp));
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sleep(1);
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while (read(fwfd, &fw_buf[1], 3) == 3) {
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fw_buf[0] = HCI_CMD_PKT;
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fw_len = fw_buf[3];
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if (read(fwfd, &fw_buf[4], fw_len) != fw_len)
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break;
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fw_cmd = fw_buf[2] << 8 | fw_buf[1];
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uart_send_cmd(fd, fw_cmd, &fw_buf[4], fw_len);
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uart_recv_cc(fd, fw_cmd, &resp, sizeof(resp));
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}
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close(fwfd);
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sleep(4);
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uart_send_cmd(fd, HCI_CMD_RESET, NULL, 0);
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uart_recv_cc(fd, HCI_CMD_RESET, &resp, sizeof(resp));
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/* assume it succeeded? */
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if (speed >= 3000000)
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clock = BCM43XX_CLK_48;
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else
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clock = BCM43XX_CLK_24;
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uart_send_cmd(fd, HCI_CMD_BCM43XX_SET_CLOCK, &clock, sizeof(clock));
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uart_recv_cc(fd, HCI_CMD_BCM43XX_SET_CLOCK, &resp, sizeof(resp));
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rate[2] = speed;
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rate[3] = speed >> 8;
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rate[4] = speed >> 16;
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rate[5] = speed >> 24;
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uart_send_cmd(fd, HCI_CMD_BCM43XX_SET_UART_BAUD_RATE, &rate, sizeof(rate));
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uart_recv_cc(fd, HCI_CMD_BCM43XX_SET_UART_BAUD_RATE, &resp, sizeof(resp));
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}
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