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usb: make usb_packet_copy operate on combined packets 

Likewise usb_packet_skip.
Also usb_packet_size.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2013-01-24 15:38:23 +01:00
parent e382d966d0
commit 6a98d1c0f9
2 changed files with 15 additions and 5 deletions
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1
hw/usb.h
View File

@ -390,6 +390,7 @@ int usb_packet_map(USBPacket *p, QEMUSGList *sgl);
void usb_packet_unmap(USBPacket *p, QEMUSGList *sgl);
void usb_packet_copy(USBPacket *p, void *ptr, size_t bytes);
void usb_packet_skip(USBPacket *p, size_t bytes);
size_t usb_packet_size(USBPacket *p);
void usb_packet_cleanup(USBPacket *p);
static inline bool usb_packet_is_inflight(USBPacket *p)

19
hw/usb/core.c
View File

@ -570,15 +570,17 @@ void usb_packet_addbuf(USBPacket *p, void *ptr, size_t len)
void usb_packet_copy(USBPacket *p, void *ptr, size_t bytes)
{
QEMUIOVector *iov = p->combined ? &p->combined->iov : &p->iov;
assert(p->actual_length >= 0);
assert(p->actual_length + bytes <= p->iov.size);
assert(p->actual_length + bytes <= iov->size);
switch (p->pid) {
case USB_TOKEN_SETUP:
case USB_TOKEN_OUT:
iov_to_buf(p->iov.iov, p->iov.niov, p->actual_length, ptr, bytes);
iov_to_buf(iov->iov, iov->niov, p->actual_length, ptr, bytes);
break;
case USB_TOKEN_IN:
iov_from_buf(p->iov.iov, p->iov.niov, p->actual_length, ptr, bytes);
iov_from_buf(iov->iov, iov->niov, p->actual_length, ptr, bytes);
break;
default:
fprintf(stderr, "%s: invalid pid: %x\n", __func__, p->pid);
@ -589,14 +591,21 @@ void usb_packet_copy(USBPacket *p, void *ptr, size_t bytes)
void usb_packet_skip(USBPacket *p, size_t bytes)
{
QEMUIOVector *iov = p->combined ? &p->combined->iov : &p->iov;
assert(p->actual_length >= 0);
assert(p->actual_length + bytes <= p->iov.size);
assert(p->actual_length + bytes <= iov->size);
if (p->pid == USB_TOKEN_IN) {
iov_memset(p->iov.iov, p->iov.niov, p->actual_length, 0, bytes);
iov_memset(iov->iov, iov->niov, p->actual_length, 0, bytes);
}
p->actual_length += bytes;
}
size_t usb_packet_size(USBPacket *p)
{
return p->combined ? p->combined->iov.size : p->iov.size;
}
void usb_packet_cleanup(USBPacket *p)
{
assert(!usb_packet_is_inflight(p));