*/
#include "hw/hw.h"
#include "hw/usb.h"
-#include "hw/pci.h"
+#include "hw/pci/pci.h"
#include "qemu-timer.h"
#include "iov.h"
#include "dma.h"
QEMUBH *bh;
uint32_t frame_bytes;
uint32_t frame_bandwidth;
+ bool completions_only;
UHCIPort ports[NB_PORTS];
/* Interrupts that should be raised at the end of the current frame. */
}
}
port->ctrl &= UHCI_PORT_READ_ONLY;
+ /* enabled may only be set if a device is connected */
+ if (!(port->ctrl & UHCI_PORT_CCS)) {
+ val &= ~UHCI_PORT_EN;
+ }
port->ctrl |= (val & ~UHCI_PORT_READ_ONLY);
/* some bits are reset when a '1' is written to them */
port->ctrl &= ~(val & UHCI_PORT_WRITE_CLEAR);
le32_to_cpus(&td->buffer);
}
+static int uhci_handle_td_error(UHCIState *s, UHCI_TD *td, uint32_t td_addr,
+ int status, uint32_t *int_mask)
+{
+ uint32_t queue_token = uhci_queue_token(td);
+ int ret;
+
+ switch (status) {
+ case USB_RET_NAK:
+ td->ctrl |= TD_CTRL_NAK;
+ return TD_RESULT_NEXT_QH;
+
+ case USB_RET_STALL:
+ td->ctrl |= TD_CTRL_STALL;
+ trace_usb_uhci_packet_complete_stall(queue_token, td_addr);
+ ret = TD_RESULT_NEXT_QH;
+ break;
+
+ case USB_RET_BABBLE:
+ td->ctrl |= TD_CTRL_BABBLE | TD_CTRL_STALL;
+ /* frame interrupted */
+ trace_usb_uhci_packet_complete_babble(queue_token, td_addr);
+ ret = TD_RESULT_STOP_FRAME;
+ break;
+
+ case USB_RET_IOERROR:
+ case USB_RET_NODEV:
+ default:
+ td->ctrl |= TD_CTRL_TIMEOUT;
+ td->ctrl &= ~(3 << TD_CTRL_ERROR_SHIFT);
+ trace_usb_uhci_packet_complete_error(queue_token, td_addr);
+ ret = TD_RESULT_NEXT_QH;
+ break;
+ }
+
+ td->ctrl &= ~TD_CTRL_ACTIVE;
+ s->status |= UHCI_STS_USBERR;
+ if (td->ctrl & TD_CTRL_IOC) {
+ *int_mask |= 0x01;
+ }
+ uhci_update_irq(s);
+ return ret;
+}
+
static int uhci_complete_td(UHCIState *s, UHCI_TD *td, UHCIAsync *async, uint32_t *int_mask)
{
- int len = 0, max_len, err, ret;
+ int len = 0, max_len;
uint8_t pid;
max_len = ((td->token >> 21) + 1) & 0x7ff;
pid = td->token & 0xff;
- ret = async->packet.result;
-
if (td->ctrl & TD_CTRL_IOS)
td->ctrl &= ~TD_CTRL_ACTIVE;
- if (ret < 0)
- goto out;
+ if (async->packet.status != USB_RET_SUCCESS) {
+ return uhci_handle_td_error(s, td, async->td_addr,
+ async->packet.status, int_mask);
+ }
- len = async->packet.result;
+ len = async->packet.actual_length;
td->ctrl = (td->ctrl & ~0x7ff) | ((len - 1) & 0x7ff);
/* The NAK bit may have been set by a previous frame, so clear it
trace_usb_uhci_packet_complete_success(async->queue->token,
async->td_addr);
return TD_RESULT_COMPLETE;
-
-out:
- switch(ret) {
- case USB_RET_NAK:
- td->ctrl |= TD_CTRL_NAK;
- return TD_RESULT_NEXT_QH;
-
- case USB_RET_STALL:
- td->ctrl |= TD_CTRL_STALL;
- trace_usb_uhci_packet_complete_stall(async->queue->token,
- async->td_addr);
- err = TD_RESULT_NEXT_QH;
- break;
-
- case USB_RET_BABBLE:
- td->ctrl |= TD_CTRL_BABBLE | TD_CTRL_STALL;
- /* frame interrupted */
- trace_usb_uhci_packet_complete_babble(async->queue->token,
- async->td_addr);
- err = TD_RESULT_STOP_FRAME;
- break;
-
- case USB_RET_IOERROR:
- case USB_RET_NODEV:
- default:
- td->ctrl |= TD_CTRL_TIMEOUT;
- td->ctrl &= ~(3 << TD_CTRL_ERROR_SHIFT);
- trace_usb_uhci_packet_complete_error(async->queue->token,
- async->td_addr);
- err = TD_RESULT_NEXT_QH;
- break;
- }
-
- td->ctrl &= ~TD_CTRL_ACTIVE;
- s->status |= UHCI_STS_USBERR;
- if (td->ctrl & TD_CTRL_IOC) {
- *int_mask |= 0x01;
- }
- uhci_update_irq(s);
- return err;
}
static int uhci_handle_td(UHCIState *s, UHCIQueue *q, uint32_t qh_addr,
UHCI_TD *td, uint32_t td_addr, uint32_t *int_mask)
{
- int len = 0, max_len;
+ int ret, max_len;
bool spd;
bool queuing = (q != NULL);
uint8_t pid = td->token & 0xff;
goto done;
}
+ if (s->completions_only) {
+ return TD_RESULT_ASYNC_CONT;
+ }
+
/* Allocate new packet */
if (q == NULL) {
USBDevice *dev = uhci_find_device(s, (td->token >> 8) & 0x7f);
USBEndpoint *ep = usb_ep_get(dev, pid, (td->token >> 15) & 0xf);
+
+ if (ep == NULL) {
+ return uhci_handle_td_error(s, td, td_addr, USB_RET_NODEV,
+ int_mask);
+ }
q = uhci_queue_new(s, qh_addr, td, ep);
}
async = uhci_async_alloc(q, td_addr);
switch(pid) {
case USB_TOKEN_OUT:
case USB_TOKEN_SETUP:
- len = usb_handle_packet(q->ep->dev, &async->packet);
- if (len >= 0)
- len = max_len;
+ usb_handle_packet(q->ep->dev, &async->packet);
+ if (async->packet.status == USB_RET_SUCCESS) {
+ async->packet.actual_length = max_len;
+ }
break;
case USB_TOKEN_IN:
- len = usb_handle_packet(q->ep->dev, &async->packet);
+ usb_handle_packet(q->ep->dev, &async->packet);
break;
default:
uhci_update_irq(s);
return TD_RESULT_STOP_FRAME;
}
-
- if (len == USB_RET_ASYNC) {
+
+ if (async->packet.status == USB_RET_ASYNC) {
uhci_async_link(async);
if (!queuing) {
uhci_queue_fill(q, td);
return TD_RESULT_ASYNC_START;
}
- async->packet.result = len;
-
done:
- len = uhci_complete_td(s, td, async, int_mask);
+ ret = uhci_complete_td(s, td, async, int_mask);
usb_packet_unmap(&async->packet, &async->sgl);
uhci_async_free(async);
- return len;
+ return ret;
}
static void uhci_async_complete(USBPort *port, USBPacket *packet)
UHCIAsync *async = container_of(packet, UHCIAsync, packet);
UHCIState *s = async->queue->uhci;
- if (packet->result == USB_RET_REMOVE_FROM_QUEUE) {
- uhci_async_unlink(async);
+ if (packet->status == USB_RET_REMOVE_FROM_QUEUE) {
uhci_async_cancel(async);
return;
}
async->done = 1;
- if (s->frame_bytes < s->frame_bandwidth) {
- qemu_bh_schedule(s->bh);
- }
+ /* Force processing of this packet *now*, needed for migration */
+ s->completions_only = true;
+ qemu_bh_schedule(s->bh);
}
static int is_valid(uint32_t link)
qhdb_reset(&qhdb);
for (cnt = FRAME_MAX_LOOPS; is_valid(link) && cnt; cnt--) {
- if (s->frame_bytes >= s->frame_bandwidth) {
+ if (!s->completions_only && s->frame_bytes >= s->frame_bandwidth) {
/* We've reached the usb 1.1 bandwidth, which is
1280 bytes/frame, stop processing */
trace_usb_uhci_frame_stop_bandwidth();
/* prepare the timer for the next frame */
s->expire_time += (get_ticks_per_sec() / FRAME_TIMER_FREQ);
s->frame_bytes = 0;
+ s->completions_only = false;
qemu_bh_cancel(s->bh);
if (!(s->cmd & UHCI_CMD_RS)) {
k->device_id = info->device_id;
k->revision = info->revision;
k->class_id = PCI_CLASS_SERIAL_USB;
+ k->no_hotplug = 1;
dc->vmsd = &vmstate_uhci;
dc->props = uhci_properties;
u->info = *info;
projects / qemu.git / blobdiff