From 37e09437c2f20ac269f8d2b7f9c7f7cd325f0585 Mon Sep 17 00:00:00 2001
From: makefu <github@syntax-fehler.de>
Date: Sat, 20 Aug 2011 23:21:48 +0200
Subject: oncology: initial commit
oncology will analyse the current krebs status
---
oncology/dpfhack_display/dpflib/rawusb.c | 177 +++++++++++++++++++++++++++++++
1 file changed, 177 insertions(+)
create mode 100644 oncology/dpfhack_display/dpflib/rawusb.c
(limited to 'oncology/dpfhack_display/dpflib/rawusb.c')
diff --git a/oncology/dpfhack_display/dpflib/rawusb.c b/oncology/dpfhack_display/dpflib/rawusb.c
new file mode 100644
index 00000000..a3c568b7
--- /dev/null
+++ b/oncology/dpfhack_display/dpflib/rawusb.c
@@ -0,0 +1,177 @@
+/* Low level USB code to access DPF.
+ *
+ * (c) 2010, 2011 <hackfin@section5.ch>
+ *
+ * This currently uses the SCSI command set
+ *
+ * The reason for this is that we want to access the hacked frame
+ * non-root and without having to wait for the SCSI interface to
+ * intialize.
+ *
+ * Later, we'll replace the SCSI command stuff.
+ */
+
+#include "dpf.h"
+#include "sglib.h"
+
+#include <string.h>
+#include <stdio.h>
+
+#define ENDPT_OUT 1
+#define ENDPT_IN 0x81
+
+struct known_device {
+ char *desc;
+ unsigned short vid;
+ unsigned short pid;
+} g_known_devices[] = {
+ { "AX206 DPF", 0x1908, 0x0102 },
+ { 0 , 0, 0 } /* NEVER REMOVE THIS */
+};
+
+int handle_error(char *txt)
+{
+ fprintf(stderr, "Error: %s\n", txt);
+ return -1;
+}
+
+void usb_flush(usb_dev_handle *dev)
+{
+ char buf[20];
+ usb_bulk_read(dev, ENDPT_IN, buf, 3, 1000);
+}
+
+int check_known_device(struct usb_device *d)
+{
+ struct known_device *dev = g_known_devices;
+
+ while (dev->desc) {
+ if ((d->descriptor.idVendor == dev->vid) &&
+ (d->descriptor.idProduct == dev->pid)) {
+ fprintf(stderr, "Found %s\n", dev->desc);
+ return 1;
+ }
+ dev++;
+ }
+ return 0;
+}
+
+static struct usb_device *find_dev(int index)
+{
+ struct usb_bus *b;
+ struct usb_device *d;
+ int enumeration = 0;
+
+ b = usb_get_busses();
+
+ while (b) {
+ d = b->devices;
+ while (d) {
+ if (check_known_device(d)) {
+ if (enumeration == index) return d;
+ else enumeration++;
+ }
+
+#ifdef DEBUG
+ printf("%04x %04x\n",
+ d->descriptor.idVendor,
+ d->descriptor.idProduct);
+#endif
+ d = d->next;
+ }
+ b = b->next;
+ }
+ return NULL;
+}
+
+char g_buf[] = {
+ 0x55, 0x53, 0x42, 0x43, // dCBWSignature
+ 0xde, 0xad, 0xbe, 0xef, // dCBWTag
+ 0x00, 0x80, 0x00, 0x00, // dCBWLength
+ 0x00, // bmCBWFlags: 0x80: data in (dev to host), 0x00: Data out
+ 0x00, // bCBWLUN
+ 0x10, // bCBWCBLength
+
+ // SCSI cmd:
+ 0xcd, 0x00, 0x00, 0x00,
+ 0x00, 0x06, 0x11, 0xf8,
+ 0x70, 0x00, 0x40, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+};
+
+int emulate_scsi(usb_dev_handle *dev, unsigned char *cmd, int cmdlen, char out,
+ unsigned char *data, unsigned long block_len)
+{
+ int len;
+ int ret;
+ static unsigned char ansbuf[13]; // Do not change size.
+
+ g_buf[14] = cmdlen;
+ memcpy(&g_buf[15], cmd, cmdlen);
+
+ g_buf[8] = block_len;
+ g_buf[9] = block_len >> 8;
+ g_buf[10] = block_len >> 16;
+ g_buf[11] = block_len >> 24;
+
+ ret = usb_bulk_write(dev, ENDPT_OUT, g_buf, sizeof(g_buf), 1000);
+ if (ret < 0) return ret;
+
+ if (out == DIR_OUT) {
+ if (data) {
+ ret = usb_bulk_write(dev, ENDPT_OUT, (const char* )data,
+ block_len, 3000);
+ if (ret != block_len) {
+ perror("bulk write");
+ return ret;
+ }
+ }
+ } else if (data) {
+ ret = usb_bulk_read(dev, ENDPT_IN, (char *) data, block_len, 4000);
+ if (ret != block_len) {
+ perror("bulk data read");
+ }
+ }
+ // get ACK:
+ len = sizeof(ansbuf);
+ int retry = 0;
+ do {
+ ret = usb_bulk_read(dev, ENDPT_IN, (char *) ansbuf, len, 5000);
+ if (ret != len) {
+ perror("bulk ACK read");
+ ret = DEVERR_TIMEOUT;
+ }
+ retry++;
+ } while (ret == DEVERR_TIMEOUT && retry < 5);
+ if (strncmp((char *) ansbuf, "USBS", 4)) {
+ return handle_error("Got invalid reply\n");
+ }
+ // pass back return code set by peer:
+ return ansbuf[12];
+}
+
+usb_dev_handle *dpf_usb_open(int index)
+{
+ struct usb_device *d;
+ usb_dev_handle *usb_dev;
+
+ usb_init();
+ usb_find_busses();
+ usb_find_devices();
+
+ d = find_dev(index);
+ if (!d) {
+ handle_error("No matching USB device found!");
+ return NULL;
+ }
+
+ usb_dev = usb_open(d);
+ if (usb_dev == NULL) {
+ handle_error("Failed to open usb device!");
+ return NULL;
+ }
+ usb_claim_interface(usb_dev, 0);
+ return usb_dev;
+}
+
+
--
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