Move the new USB stack into its new home.

1 files changed, 77 insertions, 0 deletions

diff --git a/sys/dev/usb/usb_mbuf.c b/sys/dev/usb/usb_mbuf.c
new file mode 100644
index 0000000..3ae6ee6
--- /dev/null
+++ b/sys/dev/usb/usb_mbuf.c
@@ -0,0 +1,77 @@
+/* $FreeBSD$ */
+/*-
+ * Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <dev/usb/usb_core.h>
+#include <dev/usb/usb_mbuf.h>
+
+/*------------------------------------------------------------------------*
+ *      usb2_alloc_mbufs - allocate mbufs to an usbd interface queue
+ *
+ * Returns:
+ *   A pointer that should be passed to "free()" when the buffer(s)
+ *   should be released.
+ *------------------------------------------------------------------------*/
+void   *
+usb2_alloc_mbufs(struct malloc_type *type, struct usb2_ifqueue *ifq,
+    uint32_t block_size, uint16_t nblocks)
+{
+	struct usb2_mbuf *m_ptr;
+	uint8_t *data_ptr;
+	void *free_ptr = NULL;
+	uint32_t alloc_size;
+
+	/* align data */
+	block_size += ((-block_size) & (USB_HOST_ALIGN - 1));
+
+	if (nblocks && block_size) {
+
+		alloc_size = (block_size + sizeof(struct usb2_mbuf)) * nblocks;
+
+		free_ptr = malloc(alloc_size, type, M_WAITOK | M_ZERO);
+
+		if (free_ptr == NULL) {
+			goto done;
+		}
+		m_ptr = free_ptr;
+		data_ptr = (void *)(m_ptr + nblocks);
+
+		while (nblocks--) {
+
+			m_ptr->cur_data_ptr =
+			    m_ptr->min_data_ptr = data_ptr;
+
+			m_ptr->cur_data_len =
+			    m_ptr->max_data_len = block_size;
+
+			USB_IF_ENQUEUE(ifq, m_ptr);
+
+			m_ptr++;
+			data_ptr += block_size;
+		}
+	}
+done:
+	return (free_ptr);
+}