650d103d3e
In my "build everything" tree, changing hw/hw.h triggers a recompile of some 2600 out of 6600 objects (not counting tests and objects that don't depend on qemu/osdep.h). The previous commits have left only the declaration of hw_error() in hw/hw.h. This permits dropping most of its inclusions. Touching it now recompiles less than 200 objects. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20190812052359.30071-19-armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
70 lines
2.3 KiB
C
70 lines
2.3 KiB
C
/*
|
|
* QEMU USB emulation, libhw bits.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
#include "qemu/osdep.h"
|
|
#include "hw/usb.h"
|
|
#include "sysemu/dma.h"
|
|
|
|
int usb_packet_map(USBPacket *p, QEMUSGList *sgl)
|
|
{
|
|
DMADirection dir = (p->pid == USB_TOKEN_IN) ?
|
|
DMA_DIRECTION_FROM_DEVICE : DMA_DIRECTION_TO_DEVICE;
|
|
void *mem;
|
|
int i;
|
|
|
|
for (i = 0; i < sgl->nsg; i++) {
|
|
dma_addr_t base = sgl->sg[i].base;
|
|
dma_addr_t len = sgl->sg[i].len;
|
|
|
|
while (len) {
|
|
dma_addr_t xlen = len;
|
|
mem = dma_memory_map(sgl->as, base, &xlen, dir);
|
|
if (!mem) {
|
|
goto err;
|
|
}
|
|
if (xlen > len) {
|
|
xlen = len;
|
|
}
|
|
qemu_iovec_add(&p->iov, mem, xlen);
|
|
len -= xlen;
|
|
base += xlen;
|
|
}
|
|
}
|
|
return 0;
|
|
|
|
err:
|
|
usb_packet_unmap(p, sgl);
|
|
return -1;
|
|
}
|
|
|
|
void usb_packet_unmap(USBPacket *p, QEMUSGList *sgl)
|
|
{
|
|
DMADirection dir = (p->pid == USB_TOKEN_IN) ?
|
|
DMA_DIRECTION_FROM_DEVICE : DMA_DIRECTION_TO_DEVICE;
|
|
int i;
|
|
|
|
for (i = 0; i < p->iov.niov; i++) {
|
|
dma_memory_unmap(sgl->as, p->iov.iov[i].iov_base,
|
|
p->iov.iov[i].iov_len, dir,
|
|
p->iov.iov[i].iov_len);
|
|
}
|
|
}
|