diff options
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/arch/amd64/isa/spkr.c | 68 | ||||
| -rw-r--r-- | sys/include/arch/amd64/isa/spkr.h | 37 |
2 files changed, 105 insertions, 0 deletions
diff --git a/sys/arch/amd64/isa/spkr.c b/sys/arch/amd64/isa/spkr.c new file mode 100644 index 0000000..109054e --- /dev/null +++ b/sys/arch/amd64/isa/spkr.c @@ -0,0 +1,68 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +#include <sys/timer.h> +#include <sys/errno.h> +#include <machine/isa/spkr.h> +#include <machine/isa/i8254.h> +#include <machine/io.h> + +#define DIVIDEND 1193180 +#define CTRL_PORT 0x61 + +int +pcspkr_tone(uint16_t freq, uint32_t msec) +{ + uint32_t divisor; + uint8_t tmp; + struct timer tmr; + + if (req_timer(TIMER_GP, &tmr) != TMRR_SUCCESS) + return -ENOTSUP; + if (__unlikely(tmr.msleep == NULL)) + return -ENOTSUP; + + divisor = DIVIDEND / freq; + outb(i8254_COMMAND, 0xB6); + outb(i8254_CHANNEL_2, divisor & 0xFF); + outb(i8254_CHANNEL_2, (divisor >> 8) & 0xFF); + + /* Oscillate the speaker */ + tmp = inb(CTRL_PORT); + if (!__TEST(tmp, 3)) { + tmp |= 3; + outb(CTRL_PORT, tmp); + } + + /* Sleep then turn off the speaker */ + tmr.msleep(msec); + outb(CTRL_PORT, tmp & ~3); + return 0; +} diff --git a/sys/include/arch/amd64/isa/spkr.h b/sys/include/arch/amd64/isa/spkr.h new file mode 100644 index 0000000..2691721 --- /dev/null +++ b/sys/include/arch/amd64/isa/spkr.h @@ -0,0 +1,37 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _ISA_SPKR_H_ +#define _ISA_SPKR_H_ + +#include <sys/types.h> + +int pcspkr_tone(uint16_t freq, uint32_t msec); + +#endif |