From 9f7a9361a816479ca109e1747e45d40135fad3b0 Mon Sep 17 00:00:00 2001
From: Gerd Hoffmann <kraxel@redhat.com>
Date: Fri, 24 Aug 2012 14:13:08 +0200
Subject: [PATCH 335/366] xhci: iso xfer support
Add support for iso transfers.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
hw/usb/hcd-xhci.c | 117 ++++++++++++++++++++++++++++++++++++++++++++++--------
1 file changed, 101 insertions(+), 16 deletions(-)
diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c
index 9077cb3..3c61bb8 100644
--- a/hw/usb/hcd-xhci.c
+++ b/hw/usb/hcd-xhci.c
@@ -325,9 +325,15 @@ typedef struct XHCITransfer {
unsigned int pkts;
unsigned int pktsize;
unsigned int cur_pkt;
+
+ uint64_t mfindex_kick;
} XHCITransfer;
typedef struct XHCIEPContext {
+ XHCIState *xhci;
+ unsigned int slotid;
+ unsigned int epid;
+
XHCIRing ring;
unsigned int next_xfer;
unsigned int comp_xfer;
@@ -337,6 +343,11 @@ typedef struct XHCIEPContext {
dma_addr_t pctx;
unsigned int max_psize;
uint32_t state;
+
+ /* iso xfer scheduling */
+ unsigned int interval;
+ int64_t mfindex_last;
+ QEMUTimer *kick_timer;
} XHCIEPContext;
typedef struct XHCISlot {
@@ -856,6 +867,12 @@ static void xhci_set_ep_state(XHCIState *xhci, XHCIEPContext *epctx,
epctx->state = state;
}
+static void xhci_ep_kick_timer(void *opaque)
+{
+ XHCIEPContext *epctx = opaque;
+ xhci_kick_ep(epctx->xhci, epctx->slotid, epctx->epid);
+}
+
static TRBCCode xhci_enable_ep(XHCIState *xhci, unsigned int slotid,
unsigned int epid, dma_addr_t pctx,
uint32_t *ctx)
@@ -877,6 +894,9 @@ static TRBCCode xhci_enable_ep(XHCIState *xhci, unsigned int slotid,
epctx = g_malloc(sizeof(XHCIEPContext));
memset(epctx, 0, sizeof(XHCIEPContext));
+ epctx->xhci = xhci;
+ epctx->slotid = slotid;
+ epctx->epid = epid;
slot->eps[epid-1] = epctx;
@@ -895,6 +915,10 @@ static TRBCCode xhci_enable_ep(XHCIState *xhci, unsigned int slotid,
usb_packet_init(&epctx->transfers[i].packet);
}
+ epctx->interval = 1 << (ctx[0] >> 16) & 0xff;
+ epctx->mfindex_last = 0;
+ epctx->kick_timer = qemu_new_timer_ns(vm_clock, xhci_ep_kick_timer, epctx);
+
epctx->state = EP_RUNNING;
ctx[0] &= ~EP_STATE_MASK;
ctx[0] |= EP_RUNNING;
@@ -934,6 +958,7 @@ static int xhci_ep_nuke_xfers(XHCIState *xhci, unsigned int slotid,
if (t->running_retry) {
t->running_retry = 0;
epctx->retry = NULL;
+ qemu_del_timer(epctx->kick_timer);
}
if (t->trbs) {
g_free(t->trbs);
@@ -969,6 +994,7 @@ static TRBCCode xhci_disable_ep(XHCIState *xhci, unsigned int slotid,
xhci_set_ep_state(xhci, epctx, EP_DISABLED);
+ qemu_free_timer(epctx->kick_timer);
g_free(epctx);
slot->eps[epid-1] = NULL;
@@ -1378,29 +1404,70 @@ static int xhci_fire_ctl_transfer(XHCIState *xhci, XHCITransfer *xfer)
return 0;
}
+static void xhci_calc_iso_kick(XHCIState *xhci, XHCITransfer *xfer,
+ XHCIEPContext *epctx, uint64_t mfindex)
+{
+ if (xfer->trbs[0].control & TRB_TR_SIA) {
+ uint64_t asap = ((mfindex + epctx->interval - 1) &
+ ~(epctx->interval-1));
+ if (asap >= epctx->mfindex_last &&
+ asap <= epctx->mfindex_last + epctx->interval * 4) {
+ xfer->mfindex_kick = epctx->mfindex_last + epctx->interval;
+ } else {
+ xfer->mfindex_kick = asap;
+ }
+ } else {
+ xfer->mfindex_kick = (xfer->trbs[0].control >> TRB_TR_FRAMEID_SHIFT)
+ & TRB_TR_FRAMEID_MASK;
+ xfer->mfindex_kick |= mfindex & ~0x3fff;
+ if (xfer->mfindex_kick < mfindex) {
+ xfer->mfindex_kick += 0x4000;
+ }
+ }
+}
+
+static void xhci_check_iso_kick(XHCIState *xhci, XHCITransfer *xfer,
+ XHCIEPContext *epctx, uint64_t mfindex)
+{
+ if (xfer->mfindex_kick > mfindex) {
+ qemu_mod_timer(epctx->kick_timer, qemu_get_clock_ns(vm_clock) +
+ (xfer->mfindex_kick - mfindex) * 125000);
+ xfer->running_retry = 1;
+ } else {
+ epctx->mfindex_last = xfer->mfindex_kick;
+ qemu_del_timer(epctx->kick_timer);
+ xfer->running_retry = 0;
+ }
+}
+
+
static int xhci_submit(XHCIState *xhci, XHCITransfer *xfer, XHCIEPContext *epctx)
{
+ uint64_t mfindex;
int ret;
DPRINTF("xhci_submit(slotid=%d,epid=%d)\n", xfer->slotid, xfer->epid);
xfer->in_xfer = epctx->type>>2;
- if (epctx->type == ET_ISO_IN || epctx->type == ET_ISO_OUT) {
- xfer->pkts = 1;
- } else {
- xfer->pkts = 0;
- }
-
switch(epctx->type) {
case ET_INTR_OUT:
case ET_INTR_IN:
case ET_BULK_OUT:
case ET_BULK_IN:
+ xfer->pkts = 0;
+ xfer->iso_xfer = false;
break;
case ET_ISO_OUT:
case ET_ISO_IN:
- FIXME();
+ xfer->pkts = 1;
+ xfer->iso_xfer = true;
+ mfindex = xhci_mfindex_get(xhci);
+ xhci_calc_iso_kick(xhci, xfer, epctx, mfindex);
+ xhci_check_iso_kick(xhci, xfer, epctx, mfindex);
+ if (xfer->running_retry) {
+ return -1;
+ }
break;
default:
fprintf(stderr, "xhci: unknown or unhandled EP "
@@ -1430,6 +1497,7 @@ static int xhci_fire_transfer(XHCIState *xhci, XHCITransfer *xfer, XHCIEPContext
static void xhci_kick_ep(XHCIState *xhci, unsigned int slotid, unsigned int epid)
{
XHCIEPContext *epctx;
+ uint64_t mfindex;
int length;
int i;
@@ -1449,20 +1517,35 @@ static void xhci_kick_ep(XHCIState *xhci, unsigned int slotid, unsigned int epid
}
if (epctx->retry) {
- /* retry nak'ed transfer */
XHCITransfer *xfer = epctx->retry;
int result;
trace_usb_xhci_xfer_retry(xfer);
assert(xfer->running_retry);
- if (xhci_setup_packet(xfer) < 0) {
- return;
- }
- result = usb_handle_packet(xfer->packet.ep->dev, &xfer->packet);
- if (result == USB_RET_NAK) {
- return;
+ if (xfer->iso_xfer) {
+ /* retry delayed iso transfer */
+ mfindex = xhci_mfindex_get(xhci);
+ xhci_check_iso_kick(xhci, xfer, epctx, mfindex);
+ if (xfer->running_retry) {
+ return;
+ }
+ if (xhci_setup_packet(xfer) < 0) {
+ return;
+ }
+ result = usb_handle_packet(xfer->packet.ep->dev, &xfer->packet);
+ assert(result != USB_RET_NAK);
+ xhci_complete_packet(xfer, result);
+ } else {
+ /* retry nak'ed transfer */
+ if (xhci_setup_packet(xfer) < 0) {
+ return;
+ }
+ result = usb_handle_packet(xfer->packet.ep->dev, &xfer->packet);
+ if (result == USB_RET_NAK) {
+ return;
+ }
+ xhci_complete_packet(xfer, result);
}
- xhci_complete_packet(xfer, result);
assert(!xfer->running_retry);
epctx->retry = NULL;
}
@@ -1514,7 +1597,9 @@ static void xhci_kick_ep(XHCIState *xhci, unsigned int slotid, unsigned int epid
if (xhci_fire_transfer(xhci, xfer, epctx) >= 0) {
epctx->next_xfer = (epctx->next_xfer + 1) % TD_QUEUE;
} else {
- fprintf(stderr, "xhci: error firing data transfer\n");
+ if (!xfer->iso_xfer) {
+ fprintf(stderr, "xhci: error firing data transfer\n");
+ }
}
}
--
1.7.12