1 files changed, 177 insertions, 0 deletions
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;
+}
+
+