+++ /dev/null
-/*
- * This file is part of the libsigrok project.
- *
- * Copyright (C) 2014 Kumar Abhishek <abhishek@theembeddedkitchen.net>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef BEAGLELOGIC_H_
-#define BEAGLELOGIC_H_
-
-#include <fcntl.h>
-
-#include <sys/mman.h>
-#include <sys/types.h>
-#include <sys/errno.h>
-#include <sys/ioctl.h>
-
-#include <stdlib.h>
-
-#include <unistd.h>
-
-/* BeagleLogic device node name */
-#define BEAGLELOGIC_DEV_NODE "/dev/beaglelogic"
-#define BEAGLELOGIC_SYSFS_ATTR(a) "/sys/devices/virtual/misc/beaglelogic/"\
- __STRING(a)
-
-/* Reproduced verbatim from beaglelogic.h in the kernel tree until the kernel
- * module hits the mainline. Contains the ABI, so DO NOT TOUCH this section */
-
-/* ioctl calls that can be issued on /dev/beaglelogic */
-#define IOCTL_BL_GET_VERSION _IOR('k', 0x20, uint32_t)
-
-#define IOCTL_BL_GET_SAMPLE_RATE _IOR('k', 0x21, uint32_t)
-#define IOCTL_BL_SET_SAMPLE_RATE _IOW('k', 0x21, uint32_t)
-
-#define IOCTL_BL_GET_SAMPLE_UNIT _IOR('k', 0x22, uint32_t)
-#define IOCTL_BL_SET_SAMPLE_UNIT _IOW('k', 0x22, uint32_t)
-
-#define IOCTL_BL_GET_TRIGGER_FLAGS _IOR('k', 0x23, uint32_t)
-#define IOCTL_BL_SET_TRIGGER_FLAGS _IOW('k', 0x23, uint32_t)
-
-#define IOCTL_BL_CACHE_INVALIDATE _IO('k', 0x25)
-
-#define IOCTL_BL_GET_BUFFER_SIZE _IOR('k', 0x26, uint32_t)
-#define IOCTL_BL_SET_BUFFER_SIZE _IOW('k', 0x26, uint32_t)
-
-#define IOCTL_BL_GET_BUFUNIT_SIZE _IOR('k', 0x27, uint32_t)
-
-#define IOCTL_BL_FILL_TEST_PATTERN _IO('k', 0x28)
-
-#define IOCTL_BL_START _IO('k', 0x29)
-#define IOCTL_BL_STOP _IO('k', 0x2A)
-
-/* Possible States of BeagleLogic */
-enum beaglelogic_states {
- STATE_BL_DISABLED, /* Powered off (at module start) */
- STATE_BL_INITIALIZED, /* Powered on */
- STATE_BL_MEMALLOCD, /* Buffers allocated */
- STATE_BL_ARMED, /* All Buffers DMA-mapped and configuration done */
- STATE_BL_RUNNING, /* Data being captured */
- STATE_BL_REQUEST_STOP, /* Stop requested */
- STATE_BL_ERROR /* Buffer overrun */
-};
-
-/* Setting attributes */
-enum beaglelogic_triggerflags {
- BL_TRIGGERFLAGS_ONESHOT = 0,
- BL_TRIGGERFLAGS_CONTINUOUS
-};
-
-/* Possible sample unit / formats */
-enum beaglelogic_sampleunit {
- BL_SAMPLEUNIT_16_BITS = 0,
- BL_SAMPLEUNIT_8_BITS
-};
-/* END beaglelogic.h */
-
-/* For all the functions below:
- * Parameters:
- * devc : Device context structure to operate on
- * Returns:
- * SR_OK or SR_ERR
- */
-
-SR_PRIV int beaglelogic_open_nonblock(struct dev_context *devc);
-SR_PRIV int beaglelogic_close(struct dev_context *devc);
-
-SR_PRIV int beaglelogic_get_buffersize(struct dev_context *devc);
-SR_PRIV int beaglelogic_set_buffersize(struct dev_context *devc);
-
-SR_PRIV int beaglelogic_get_samplerate(struct dev_context *devc);
-SR_PRIV int beaglelogic_set_samplerate(struct dev_context *devc);
-
-SR_PRIV int beaglelogic_get_sampleunit(struct dev_context *devc);
-SR_PRIV int beaglelogic_set_sampleunit(struct dev_context *devc);
-
-SR_PRIV int beaglelogic_get_triggerflags(struct dev_context *devc);
-SR_PRIV int beaglelogic_set_triggerflags(struct dev_context *devc);
-
-/* Start and stop the capture operation */
-SR_PRIV int beaglelogic_start(struct dev_context *devc);
-SR_PRIV int beaglelogic_stop(struct dev_context *devc);
-
-/* Get the last error size */
-SR_PRIV int beaglelogic_getlasterror(struct dev_context *devc);
-
-/* Gets the unit size of the capture buffer (usually 4 or 8 MB) */
-SR_PRIV int beaglelogic_get_bufunitsize(struct dev_context *devc);
-
-SR_PRIV int beaglelogic_mmap(struct dev_context *devc);
-SR_PRIV int beaglelogic_munmap(struct dev_context *devc);
-
-/* Sources */
-SR_PRIV inline int beaglelogic_open_nonblock(struct dev_context *devc) {
- devc->fd = open(BEAGLELOGIC_DEV_NODE, O_RDONLY | O_NONBLOCK);
- return (devc->fd == -1 ? SR_ERR : SR_OK);
-}
-
-SR_PRIV inline int beaglelogic_close(struct dev_context *devc) {
- return close(devc->fd);
-}
-
-SR_PRIV inline int beaglelogic_get_buffersize(struct dev_context *devc) {
- return ioctl(devc->fd, IOCTL_BL_GET_BUFFER_SIZE, &devc->buffersize);
-}
-
-SR_PRIV inline int beaglelogic_set_buffersize(struct dev_context *devc) {
- return ioctl(devc->fd, IOCTL_BL_SET_BUFFER_SIZE, devc->buffersize);
-}
-
-/* This is treated differently as it gets a uint64_t while a uint32_t is read */
-SR_PRIV inline int beaglelogic_get_samplerate(struct dev_context *devc) {
- uint32_t arg, err;
- err = ioctl(devc->fd, IOCTL_BL_GET_SAMPLE_RATE, &arg);
- devc->cur_samplerate = arg;
- return err;
-}
-
-SR_PRIV inline int beaglelogic_set_samplerate(struct dev_context *devc) {
- return ioctl(devc->fd, IOCTL_BL_SET_SAMPLE_RATE,
- (uint32_t)devc->cur_samplerate);
-}
-
-SR_PRIV inline int beaglelogic_get_sampleunit(struct dev_context *devc) {
- return ioctl(devc->fd, IOCTL_BL_GET_SAMPLE_UNIT, &devc->sampleunit);
-}
-
-SR_PRIV inline int beaglelogic_set_sampleunit(struct dev_context *devc) {
- return ioctl(devc->fd, IOCTL_BL_SET_SAMPLE_UNIT, devc->sampleunit);
-}
-
-SR_PRIV inline int beaglelogic_get_triggerflags(struct dev_context *devc) {
- return ioctl(devc->fd, IOCTL_BL_GET_TRIGGER_FLAGS, &devc->triggerflags);
-}
-
-SR_PRIV inline int beaglelogic_set_triggerflags(struct dev_context *devc) {
- return ioctl(devc->fd, IOCTL_BL_SET_TRIGGER_FLAGS, devc->triggerflags);
-}
-
-SR_PRIV int beaglelogic_getlasterror(struct dev_context *devc) {
- int fd;
- char buf[16];
- int ret;
-
- if ((fd = open(BEAGLELOGIC_SYSFS_ATTR(lasterror), O_RDONLY)) == -1)
- return SR_ERR;
-
- if ((ret = read(fd, buf, 16)) < 0)
- return SR_ERR;
-
- close(fd);
- devc->last_error = strtoul(buf, NULL, 10);
-
- return SR_OK;
-}
-
-SR_PRIV inline int beaglelogic_start(struct dev_context *devc) {
- return ioctl(devc->fd, IOCTL_BL_START);
-}
-
-SR_PRIV inline int beaglelogic_stop(struct dev_context *devc) {
- return ioctl(devc->fd, IOCTL_BL_STOP);
-}
-
-SR_PRIV int beaglelogic_get_bufunitsize(struct dev_context *devc) {
- return ioctl(devc->fd, IOCTL_BL_GET_BUFUNIT_SIZE, &devc->bufunitsize);
-}
-
-SR_PRIV int beaglelogic_mmap(struct dev_context *devc) {
- if (!devc->buffersize)
- beaglelogic_get_buffersize(devc);
- devc->sample_buf = mmap(NULL, devc->buffersize,
- PROT_READ, MAP_SHARED, devc->fd, 0);
- return (devc->sample_buf == MAP_FAILED ? -1 : SR_OK);
-}
-
-SR_PRIV int beaglelogic_munmap(struct dev_context *devc) {
- return munmap(devc->sample_buf, devc->buffersize);
-}
-
-#endif /* BEAGLELOGIC_H_ */
projects / libsigrok.git / blobdiff