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-rw-r--r--payloads/libpayload/include/usb/usbmsc.h17
1 files changed, 16 insertions, 1 deletions
diff --git a/payloads/libpayload/include/usb/usbmsc.h b/payloads/libpayload/include/usb/usbmsc.h
index f4562a56d5..8786586e51 100644
--- a/payloads/libpayload/include/usb/usbmsc.h
+++ b/payloads/libpayload/include/usb/usbmsc.h
@@ -34,13 +34,24 @@ typedef struct {
unsigned int numblocks;
endpoint_t *bulk_in;
endpoint_t *bulk_out;
- u8 usbdisk_created;
+ u8 quirks : 7;
+ u8 usbdisk_created : 1;
s8 ready;
u8 lun;
u8 num_luns;
void *data; /* For use by consumers of libpayload. */
} usbmsc_inst_t;
+/* Possible values for quirks field. */
+enum {
+ /* Don't check for LUNs (force assumption that there's only one LUN). */
+ USB_MSC_QUIRK_NO_LUNS = 1 << 0,
+ /* Never do a BULK_ONLY reset, just continue. This means that the device
+ cannot recover from phase errors and won't detach automatically for
+ unrecoverable errors. Do not use unless you have to. */
+ USB_MSC_QUIRK_NO_RESET = 1 << 1,
+};
+
/* Possible values for ready field. */
enum {
USB_MSC_DETACHED = -1, /* Disk detached or out to lunch. */
@@ -56,4 +67,8 @@ typedef enum { cbw_direction_data_in = 0x80, cbw_direction_data_out = 0
int readwrite_blocks_512 (usbdev_t *dev, int start, int n, cbw_direction dir, u8 *buf);
int readwrite_blocks (usbdev_t *dev, int start, int n, cbw_direction dir, u8 *buf);
+/* Force a device to enumerate as MSC, without checking class/protocol types.
+ It must still have a bulk endpoint pair and respond to MSC commands. */
+void usb_msc_force_init (usbdev_t *dev, u32 quirks);
+
#endif