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-rw-r--r--util/lsdvb/lsdvb.c323
1 files changed, 323 insertions, 0 deletions
diff --git a/util/lsdvb/lsdvb.c b/util/lsdvb/lsdvb.c
new file mode 100644
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--- /dev/null
+++ b/util/lsdvb/lsdvb.c
@@ -0,0 +1,323 @@
+/*
+ * lsdvb - list PCI DVB devices
+ *
+ * Copyright (C) 2010 Manu Abraham <abraham.manu@gmail.com>
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define _GNU_SOURCE
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+#include <sys/types.h>
+#include <dirent.h>
+
+#include <linux/dvb/frontend.h>
+
+#define DVB_DIR "/dev/dvb"
+#define DVB_DEV_DIR "/dev/dvb"
+#define DVB_SYSFS_DIR "/sys/class/dvb"
+
+/**
+ * DVB sysfs entries are found thus:
+ * /sys/class/dvb/dvb0.frontend0/device/dvb/dvb0.frontend0/uevent for DVB_ADAPTER_NUM, DVB_DEVICE_NUM
+ *
+ * /sys/class/dvb/dvb0.frontend0/device/device for PCI_DEVICE_ID
+ * /sys/class/dvb/dvb0.frontend0/device/vendor for PCI_VENDOR_ID
+ * /sys/class/dvb/dvb0.frontend0/device/irq for PCI_IRQ
+ */
+
+#define MAXLEN 64
+
+int get_frontend_entry(DIR *dvb_dir, char *frontend_dev)
+{
+ struct dirent *adap_dir;
+ char tmp[MAXLEN];
+
+ adap_dir = readdir(dvb_dir);
+ if (adap_dir != NULL) {
+ /**
+ * Directory structure follows:
+ * .
+ * ..
+ * ~dvb0.demux0
+ * ~dvb0.dvr0
+ * ~dvb0.frontend0
+ * ~dvb0.net0
+ * ~dvb1.demux0
+ * ~dvb1.dvr0
+ * ~dvb1.frontend0
+ * ~dvb1.net0
+ */
+
+ /* print information */
+ sprintf(tmp, "%s/%s", DVB_SYSFS_DIR, adap_dir->d_name);
+ /* search for a dir entry with string "frontend" */
+ if (strstr(tmp, "frontend")) {
+ /* found a dvbX.frontendY */
+ strcpy(frontend_dev, tmp);
+ return 0;
+ } else {
+ return -2;
+ }
+ } else {
+ return -1;
+ }
+}
+
+
+/* read device number and adapter number from the uevent file */
+int read_frontend_uevent(char *uevent, int *device, int *adapter)
+{
+ char uf_name[MAXLEN];
+ FILE *ufile;
+ char line[128];
+ char *token = NULL;
+
+ /* get uevent file */
+ sprintf(uf_name, "%s/%s", uevent, "uevent");
+ ufile = fopen(uf_name, "r");
+ if (ufile == NULL) {
+ fprintf(stderr, "File: %s open failed\n", uf_name);
+ return -1;
+ }
+
+ while (1) {
+ if (fgets(line, sizeof (line), ufile) == NULL)
+ return -1;
+
+ if (strstr(line, "DVB_ADAPTER_NUM")) {
+ token = strtok(line, "=");
+ token = strtok(NULL, "=");
+ *adapter = atoi(token);
+ }
+
+ if (strstr(line, "DVB_DEVICE_NUM")) {
+ token = strtok(line, "=");
+ token = strtok(NULL, "=");
+ *device = atoi(token);
+ }
+ }
+
+ fclose(ufile);
+ return 0;
+}
+
+int read_device_uevent(char *uevent,
+ char *drv,
+ int *pci_ven,
+ int *pci_dev,
+ int *pci_subven,
+ int *pci_subdev,
+ int *domain,
+ int *bus,
+ int *device,
+ int *fn)
+{
+ char uf_name[MAXLEN];
+ FILE *ufile;
+ char line[128];
+ char *token = NULL;
+ char *tmp;
+ int i;
+
+ /* get uevent file */
+ sprintf(uf_name, "%s/%s", uevent, "device/uevent");
+ ufile = fopen(uf_name, "r");
+ if (ufile == NULL) {
+ fprintf(stderr, "File: %s open failed\n", uf_name);
+ return -1;
+ }
+
+ while (1) {
+ if (fgets(line, sizeof (line), ufile) == NULL)
+ return -1;
+
+ if (strstr(line, "DRIVER")) {
+ token = strtok(line, "=");
+ token = strtok(NULL, "=");
+ for (i = 0; i < strlen(token); i++) {
+ if (token[i] == '\n' || token[i] == '\r')
+ token[i] = '\0';
+ }
+ strcpy(drv, token);
+ }
+ if (strstr(line, "PCI_ID")) {
+ token = strtok(line, "=");
+ token = strtok(NULL, "=");
+ *pci_ven = atoi(strtok(token, ":"));
+ *pci_dev = atoi(strtok(NULL, ":"));
+ }
+ if (strstr(line, "PCI_SUBSYS_ID")) {
+ token = strtok(line, "=");
+ token = strtok(NULL, "=");
+ *pci_subven = atoi(strtok(token, ":"));
+ *pci_subdev = atoi(strtok(NULL, ":"));
+
+ }
+ if (strstr(line, "PCI_SLOT_NAME")) {
+ token = strtok(line, "=");
+ token = strtok(NULL, "=");
+ *domain = atoi(strtok(token, ":"));
+ *bus = atoi(strtok(NULL, ":"));
+ tmp = strtok(NULL, ":");
+ *device = atoi(strtok(tmp, "."));
+ *fn = atoi(strtok(NULL, "."));
+ }
+ }
+
+ fclose(ufile);
+ return 0;
+}
+
+/* retrieve frontend info */
+int get_frontend_info(int adapter, char *frontend)
+{
+ DIR *dev_dir;
+ struct dirent *adap_dir;
+ char tmp[MAXLEN];
+
+ sprintf(tmp, "%s/adapter%d", DVB_DIR, adapter);
+ dev_dir = opendir(tmp);
+ if (!dev_dir) {
+ fprintf(stderr, "ERROR: Opening %s directory\n", tmp);
+ return - 1;
+ }
+
+ while ((adap_dir = readdir(dev_dir)) != NULL) {
+ /**
+ * Directory structure follows:
+ * .
+ * ..
+ * frontend0
+ * frontend1
+ * demux0
+ * dvr0
+ * net0
+ */
+ if (!strcmp(adap_dir->d_name, "."))
+ continue;
+ if (!strcmp(adap_dir->d_name, ".."))
+ continue;
+
+ /* search for a dir entry with string "frontend" */
+ if (strstr(adap_dir->d_name, "frontend")) {
+ /* found a dvbX.frontendY */
+ strcpy(frontend, adap_dir->d_name);
+ }
+
+ }
+
+ closedir(dev_dir);
+ return 0;
+}
+
+int main(void)
+{
+ DIR *sys_dir;
+ char frontend_dev[MAXLEN];
+ int entry, device, adapter;
+ char drv[MAXLEN];
+ int pci_ven, pci_dev, pci_subven, pci_subdev;
+ int domain, bus, dev, fn;
+ int dev_prev = -1;
+
+ char tmp[MAXLEN];
+ char frontend[MAXLEN];
+ char fedev[MAXLEN];
+ int fd, ret;
+ struct dvb_frontend_info info;
+
+ static char *fe_type[] = {
+ [0] = "FE_QPSK",
+ [1] = "FE_QAM",
+ [2] = "FE_OFDM",
+ [3] = "FE_ATSC",
+ };
+
+ fprintf(stderr, "\n\t\tlsdvb: Simple utility to list PCI/PCIe DVB devices\n");
+ fprintf(stderr, "\t\tVersion: 0.0.4\n");
+ fprintf(stderr, "\t\tCopyright (C) Manu Abraham\n");
+ sys_dir = opendir(DVB_SYSFS_DIR);
+ if (!sys_dir) {
+ fprintf(stderr, "ERROR: Opening %s directory\n", DVB_SYSFS_DIR);
+ return - 1;
+ }
+
+ while (1) {
+ entry = get_frontend_entry(sys_dir, frontend_dev);
+ if (entry == 0) {
+
+ read_device_uevent(frontend_dev,
+ drv,
+ &pci_ven,
+ &pci_dev,
+ &pci_subven,
+ &pci_subdev,
+ &domain,
+ &bus,
+ &dev,
+ &fn);
+
+ read_frontend_uevent(frontend_dev, &device, &adapter);
+ if (device != dev_prev) {
+ fprintf(stderr, "\n%s (%d:%d %d:%d) on PCI Domain:%d Bus:%d Device:%d Function:%d\n",
+ drv, pci_ven, pci_dev, pci_subven, pci_subdev, domain, bus, dev, fn);
+ }
+
+ fprintf(stderr, "\tDEVICE:%d ADAPTER:%d ", device, adapter);
+ dev_prev = device;
+
+ get_frontend_info(adapter, frontend);
+ sprintf(fedev, "%s/adapter%d/%s", DVB_DIR, adapter, frontend);
+ fd = open(fedev, O_RDWR | O_NONBLOCK);
+ if (fd < 0) {
+ fprintf(stderr, "ERROR: Open %s failed\n", frontend);
+ return -1;
+ }
+
+ ret = ioctl(fd, FE_GET_INFO, &info);
+ if (ret < 0) {
+ fprintf(stderr, "ERROR: IOCTL failed\n");
+ return -1;
+ }
+ strncpy(tmp, frontend + 8, 1);
+ fprintf(stderr, "FRONTEND:%d (%s) \n\t\t %s Fmin=%dMHz Fmax=%dMHz\n",
+ atoi(tmp),
+ info.name,
+ fe_type[info.type],
+ info.type == 0 ? info.frequency_min / 1000: info.frequency_min / 1000000,
+ info.type == 0 ? info.frequency_max / 1000: info.frequency_max / 1000000);
+ }
+
+ if (entry == -1)
+ break;
+ if (entry == -2)
+ continue;
+
+ }
+
+ closedir(sys_dir);
+
+ return 0;
+}
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