1f1ae32a1SGerd Hoffmann /*
2f1ae32a1SGerd Hoffmann * QEMU USB emulation, libhw bits.
3f1ae32a1SGerd Hoffmann *
4f1ae32a1SGerd Hoffmann * Permission is hereby granted, free of charge, to any person obtaining a copy
5f1ae32a1SGerd Hoffmann * of this software and associated documentation files (the "Software"), to deal
6f1ae32a1SGerd Hoffmann * in the Software without restriction, including without limitation the rights
7f1ae32a1SGerd Hoffmann * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8f1ae32a1SGerd Hoffmann * copies of the Software, and to permit persons to whom the Software is
9f1ae32a1SGerd Hoffmann * furnished to do so, subject to the following conditions:
10f1ae32a1SGerd Hoffmann *
11f1ae32a1SGerd Hoffmann * The above copyright notice and this permission notice shall be included in
12f1ae32a1SGerd Hoffmann * all copies or substantial portions of the Software.
13f1ae32a1SGerd Hoffmann *
14f1ae32a1SGerd Hoffmann * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15f1ae32a1SGerd Hoffmann * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16f1ae32a1SGerd Hoffmann * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17f1ae32a1SGerd Hoffmann * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18f1ae32a1SGerd Hoffmann * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19f1ae32a1SGerd Hoffmann * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
20f1ae32a1SGerd Hoffmann * THE SOFTWARE.
21f1ae32a1SGerd Hoffmann */
22e532b2e0SPeter Maydell #include "qemu/osdep.h"
23f1ae32a1SGerd Hoffmann #include "hw/usb.h"
249c17d615SPaolo Bonzini #include "sysemu/dma.h"
25f1ae32a1SGerd Hoffmann
usb_packet_map(USBPacket * p,QEMUSGList * sgl)26f1ae32a1SGerd Hoffmann int usb_packet_map(USBPacket *p, QEMUSGList *sgl)
27f1ae32a1SGerd Hoffmann {
28e2f89926SDavid Gibson DMADirection dir = (p->pid == USB_TOKEN_IN) ?
29e2f89926SDavid Gibson DMA_DIRECTION_FROM_DEVICE : DMA_DIRECTION_TO_DEVICE;
30f1ae32a1SGerd Hoffmann void *mem;
31f1ae32a1SGerd Hoffmann int i;
32f1ae32a1SGerd Hoffmann
33f1ae32a1SGerd Hoffmann for (i = 0; i < sgl->nsg; i++) {
3439c138c8SDavid Gibson dma_addr_t base = sgl->sg[i].base;
3539c138c8SDavid Gibson dma_addr_t len = sgl->sg[i].len;
3639c138c8SDavid Gibson
3739c138c8SDavid Gibson while (len) {
3839c138c8SDavid Gibson dma_addr_t xlen = len;
39*a1d4b0a3SPhilippe Mathieu-Daudé mem = dma_memory_map(sgl->as, base, &xlen, dir,
40*a1d4b0a3SPhilippe Mathieu-Daudé MEMTXATTRS_UNSPECIFIED);
41f1ae32a1SGerd Hoffmann if (!mem) {
42f1ae32a1SGerd Hoffmann goto err;
43f1ae32a1SGerd Hoffmann }
4439c138c8SDavid Gibson if (xlen > len) {
4539c138c8SDavid Gibson xlen = len;
4639c138c8SDavid Gibson }
4739c138c8SDavid Gibson qemu_iovec_add(&p->iov, mem, xlen);
4839c138c8SDavid Gibson len -= xlen;
4939c138c8SDavid Gibson base += xlen;
50f1ae32a1SGerd Hoffmann }
51f1ae32a1SGerd Hoffmann }
52f1ae32a1SGerd Hoffmann return 0;
53f1ae32a1SGerd Hoffmann
54f1ae32a1SGerd Hoffmann err:
55e2f89926SDavid Gibson usb_packet_unmap(p, sgl);
56f1ae32a1SGerd Hoffmann return -1;
57f1ae32a1SGerd Hoffmann }
58f1ae32a1SGerd Hoffmann
usb_packet_unmap(USBPacket * p,QEMUSGList * sgl)59e2f89926SDavid Gibson void usb_packet_unmap(USBPacket *p, QEMUSGList *sgl)
60f1ae32a1SGerd Hoffmann {
61e2f89926SDavid Gibson DMADirection dir = (p->pid == USB_TOKEN_IN) ?
62e2f89926SDavid Gibson DMA_DIRECTION_FROM_DEVICE : DMA_DIRECTION_TO_DEVICE;
63f1ae32a1SGerd Hoffmann int i;
64f1ae32a1SGerd Hoffmann
65f1ae32a1SGerd Hoffmann for (i = 0; i < p->iov.niov; i++) {
66df32fd1cSPaolo Bonzini dma_memory_unmap(sgl->as, p->iov.iov[i].iov_base,
67e2f89926SDavid Gibson p->iov.iov[i].iov_len, dir,
68f1ae32a1SGerd Hoffmann p->iov.iov[i].iov_len);
69f1ae32a1SGerd Hoffmann }
70f1ae32a1SGerd Hoffmann }
71