Implemented ioctl USB_PRINTER_GET_DEVICE_ID. Using my printer it always

times out, though.  


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33531 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/kernel/drivers/printer/usb/usb_printer.cpp

@@ -47,6 +47,7 @@ static mutex gDeviceListLock;
 static char **gDeviceNames = NULL;
 
 
+
 //
 //#pragma mark - Forward Declarations
 //
@@ -146,8 +147,7 @@ usb_printer_device_added(usb_device newDevice, void **cookie)
 	device->removed = false;
 	device->open_count = 0;
 	device->interface = 0xff;
-	device->current_tag = 0;
-	device->block_size = 4096;
+	device->alternate_setting = 0;
 
 	// scan through the interfaces to find our bulk-only data interface
 	const usb_configuration_info *configuration = gUSBModule->get_configuration(newDevice);
@@ -193,6 +193,8 @@ usb_printer_device_added(usb_device newDevice, void **cookie)
 				continue;
 
 			device->interface = interface->descr->interface_number;
+			device->alternate_setting = interface->descr->alternate_setting;
+
 			break;
 		}
 	}
@@ -345,6 +347,35 @@ usb_printer_free(void *cookie)
 }
 
 
+static status_t
+usb_printer_get_device_id(printer_device *device, void *buffer)
+{
+	uint16 value = 0;
+	uint16 index = (device->interface << 8) | device->alternate_setting;
+	char device_id[USB_PRINTER_DEVICE_ID_LENGTH + 2];
+	size_t device_id_size = 0;
+	status_t st = gUSBModule->send_request(device->device, PRINTER_REQUEST,
+			REQUEST_GET_DEVICE_ID, value, index,
+			sizeof(device_id), device_id, &device_id_size);
+
+	if (st == B_OK && device_id_size > 2) {
+		// terminate string
+		device_id[device_id_size - 1] = '\0';
+		// skip first two bytes containing string length again
+		st = user_strlcpy((char *)buffer, &device_id[2], USB_PRINTER_DEVICE_ID_LENGTH);
+	} else {
+		dprintf("%s: Failed to get device ID for interface %d and alternate setting %d: %s\n",
+				DRIVER_NAME,
+				(int)device->interface,
+				(int)device->alternate_setting,
+				strerror(st));
+		st = user_strlcpy((char *)buffer,
+				"MFG:Unknown;CMD:Unknown;MDL:Unknown;", USB_PRINTER_DEVICE_ID_LENGTH);
+	}
+	return st;
+}
+
+
 static status_t
 usb_printer_ioctl(void *cookie, uint32 op, void *buffer, size_t length)
 {
@@ -358,9 +389,7 @@ usb_printer_ioctl(void *cookie, uint32 op, void *buffer, size_t length)
 	status_t result = B_DEV_INVALID_IOCTL;
 	switch (op) {
 		case USB_PRINTER_GET_DEVICE_ID: {
-			// TODO implement
-			strncpy((char*)buffer, "Not implemented", length);
-			result = B_OK;
+			result = usb_printer_get_device_id(device, buffer);
 			break;
 		}
 
@@ -404,6 +433,7 @@ usb_printer_transfer(printer_device* device, bool directionIn, void* buffer, siz
 	return result;
 }
 
+
 static status_t
 usb_printer_read(void *cookie, off_t position, void *buffer, size_t *length)
 {

src/add-ons/kernel/drivers/printer/usb/usb_printer.h

@@ -25,9 +25,9 @@
 
 // class specific requests
 // bmRequestType
-#define PRINTER_REQUEST				0xA1
+#define PRINTER_REQUEST				(USB_REQTYPE_INTERFACE_IN | USB_REQTYPE_CLASS)
 // bRequest
-#define REQUEST_GET_STATUS_ID		0x00
+#define REQUEST_GET_DEVICE_ID		0x00
 #define REQUEST_GET_PORT_STATUS		0x01
 #define REQUEST_SOFT_RESET			0x02
 
@@ -44,7 +44,7 @@ typedef struct printer_device_s {
 	usb_pipe	bulk_in;
 	usb_pipe	bulk_out;
 	uint8		interface;
-	uint32		current_tag;
+	uint8       alternate_setting;
 
 	// used to store callback information
 	sem_id		notify;
@@ -52,7 +52,6 @@ typedef struct printer_device_s {
 	size_t		actual_length;
 
 	char		name[32];
-	uint32		block_size;
 } printer_device;
 
 #endif // _USB_PRINTER_H_