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ehci: move ehci_flush_qh 

Move ehci_flush_qh() function up in the source code.
No code change.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2012-05-10 14:13:41 +02:00
parent e59928b3d1
commit cd6657156e
1 changed files with 18 additions and 17 deletions
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35
hw/usb/hcd-ehci.c
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@ -1553,6 +1553,24 @@ static int ehci_process_itd(EHCIState *ehci,
return 0; return 0;
} }
/*
* Write the qh back to guest physical memory. This step isn't
* in the EHCI spec but we need to do it since we don't share
* physical memory with our guest VM.
*
* The first three dwords are read-only for the EHCI, so skip them
* when writing back the qh.
*/
static void ehci_flush_qh(EHCIQueue *q)
{
uint32_t *qh = (uint32_t *) &q->qh;
uint32_t dwords = sizeof(EHCIqh) >> 2;
uint32_t addr = NLPTR_GET(q->qhaddr);
put_dwords(q->ehci, addr + 3 * sizeof(uint32_t), qh + 3, dwords - 3);
}
/* This state is the entry point for asynchronous schedule /* This state is the entry point for asynchronous schedule
* processing. Entry here consitutes a EHCI start event state (4.8.5) * processing. Entry here consitutes a EHCI start event state (4.8.5)
*/ */
@ -1869,23 +1887,6 @@ static int ehci_state_horizqh(EHCIQueue *q, int async)
return again; return again;
} }
/*
* Write the qh back to guest physical memory. This step isn't
* in the EHCI spec but we need to do it since we don't share
* physical memory with our guest VM.
*
* The first three dwords are read-only for the EHCI, so skip them
* when writing back the qh.
*/
static void ehci_flush_qh(EHCIQueue *q)
{
uint32_t *qh = (uint32_t *) &q->qh;
uint32_t dwords = sizeof(EHCIqh) >> 2;
uint32_t addr = NLPTR_GET(q->qhaddr);
put_dwords(q->ehci, addr + 3 * sizeof(uint32_t), qh + 3, dwords - 3);
}
static int ehci_state_execute(EHCIQueue *q, int async) static int ehci_state_execute(EHCIQueue *q, int async)
{ {
EHCIPacket *p = QTAILQ_FIRST(&q->packets); EHCIPacket *p = QTAILQ_FIRST(&q->packets);