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DM USB: xHCI: rename some variables about ERST

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This patch only changes some names of varaibles about Event Ring Segement
Table (ERST), and doesn't modify any code logic.

Tracked-On: #3628
Signed-off-by: Xiaoguang Wu <xiaoguang.wu@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
This commit is contained in:
Xiaoguang Wu 2019-09-16 23:32:46 +08:00 committed by wenlingz
parent e9211514e7
commit 52c17d634a
2 changed files with 18 additions and 17 deletions
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26
devicemodel/hw/pci/xhci.c
View File

@ -256,7 +256,7 @@ struct pci_xhci_rtsregs {
} intrreg __attribute__((packed));
/* guest mapped addresses */
struct xhci_event_ring_seg *erstba_p;
struct xhci_erst *erstba_p;
struct xhci_trb *erst_p; /* event ring segment tbl */
int er_deq_seg; /* event ring dequeue segment */
int er_enq_idx; /* event ring enqueue index - xHCI */
@ -1796,7 +1796,7 @@ pci_xhci_insert_event(struct pci_xhci_vdev *xdev,
rts = &xdev->rtsregs;
erdp = rts->intrreg.erdp & ~0xF;
erdp_idx = (erdp - rts->erstba_p[rts->er_deq_seg].qwEvrsTablePtr) /
erdp_idx = (erdp - rts->erstba_p[rts->er_deq_seg].qwRingSegBase) /
sizeof(struct xhci_trb);
UPRINTF(LDBG, "insert event 0[%lx] 2[%x] 3[%x]\r\n"
@ -1805,20 +1805,20 @@ pci_xhci_insert_event(struct pci_xhci_vdev *xdev,
evtrb->qwTrb0, evtrb->dwTrb2, evtrb->dwTrb3,
erdp_idx, rts->er_deq_seg, rts->er_enq_idx,
rts->er_enq_seg,
rts->event_pcs, erdp, rts->erstba_p->qwEvrsTablePtr,
rts->erstba_p->dwEvrsTableSize, do_intr);
rts->event_pcs, erdp, rts->erstba_p->qwRingSegBase,
rts->erstba_p->dwRingSegSize, do_intr);
evtrbptr = &rts->erst_p[rts->er_enq_idx];
/* TODO: multi-segment table */
if (rts->er_events_cnt >= rts->erstba_p->dwEvrsTableSize) {
if (rts->er_events_cnt >= rts->erstba_p->dwRingSegSize) {
UPRINTF(LWRN, "[%d] cannot insert event; ring full\r\n",
__LINE__);
err = XHCI_TRB_ERROR_EV_RING_FULL;
goto done;
}
if (rts->er_events_cnt == rts->erstba_p->dwEvrsTableSize - 1) {
if (rts->er_events_cnt == rts->erstba_p->dwRingSegSize - 1) {
struct xhci_trb errev;
if ((evtrbptr->dwTrb3 & 0x1) == (rts->event_pcs & 0x1)) {
@ -1836,7 +1836,7 @@ pci_xhci_insert_event(struct pci_xhci_vdev *xdev,
memcpy(&rts->erst_p[rts->er_enq_idx], &errev,
sizeof(struct xhci_trb));
rts->er_enq_idx = (rts->er_enq_idx + 1) %
rts->erstba_p->dwEvrsTableSize;
rts->erstba_p->dwRingSegSize;
err = XHCI_TRB_ERROR_EV_RING_FULL;
do_intr = 1;
@ -1851,7 +1851,7 @@ pci_xhci_insert_event(struct pci_xhci_vdev *xdev,
memcpy(&rts->erst_p[rts->er_enq_idx], evtrb, sizeof(struct xhci_trb));
rts->er_enq_idx = (rts->er_enq_idx + 1) %
rts->erstba_p->dwEvrsTableSize;
rts->erstba_p->dwRingSegSize;
if (rts->er_enq_idx == 0)
rts->event_pcs ^= 1;
@ -3358,12 +3358,12 @@ pci_xhci_rtsregs_write(struct pci_xhci_vdev *xdev,
~0x3FUL);
rts->erst_p = XHCI_GADDR(xdev,
xdev->rtsregs.erstba_p->qwEvrsTablePtr & ~0x3FUL);
xdev->rtsregs.erstba_p->qwRingSegBase & ~0x3FUL);
UPRINTF(LDBG, "wr erstba erst (%p) ptr 0x%lx, sz %u\r\n",
rts->erstba_p,
rts->erstba_p->qwEvrsTablePtr,
rts->erstba_p->dwEvrsTableSize);
rts->erstba_p->qwRingSegBase,
rts->erstba_p->dwRingSegSize);
break;
case 0x18:
@ -3390,14 +3390,14 @@ pci_xhci_rtsregs_write(struct pci_xhci_vdev *xdev,
uint32_t erdp_i;
erdp = rts->intrreg.erdp & ~0xF;
erdp_i = (erdp - rts->erstba_p->qwEvrsTablePtr) /
erdp_i = (erdp - rts->erstba_p->qwRingSegBase) /
sizeof(struct xhci_trb);
if (erdp_i <= rts->er_enq_idx)
rts->er_events_cnt = rts->er_enq_idx - erdp_i;
else
rts->er_events_cnt =
rts->erstba_p->dwEvrsTableSize -
rts->erstba_p->dwRingSegSize -
(erdp_i - rts->er_enq_idx);
UPRINTF(LDBG, "erdp 0x%lx, events cnt %u\r\n",

9
devicemodel/include/xhci.h
View File

@ -399,10 +399,11 @@ struct xhci_dev_endpoint_trbs {
XHCI_MAX_TRANSFERS) + XHCI_MAX_STREAMS];
};
struct xhci_event_ring_seg {
volatile uint64_t qwEvrsTablePtr;
volatile uint32_t dwEvrsTableSize;
volatile uint32_t dwEvrsReserved;
struct xhci_erst {
volatile uint64_t qwRingSegBase;
volatile uint32_t dwRingSegSize;
volatile uint32_t dwRingSegRsv;
};
#endif /* _XHCI_H_ */