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uhci: switch to QTAILQ

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This commit is contained in:
Gerd Hoffmann 2010-12-14 18:19:47 +01:00
parent 19f3322379
commit ddf6583f88
1 changed files with 15 additions and 48 deletions
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63
hw/usb-uhci.c
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@ -113,7 +113,7 @@ static void dump_data(const uint8_t *data, int len) {}
*/
typedef struct UHCIAsync {
USBPacket packet;
struct UHCIAsync *next;
QTAILQ_ENTRY(UHCIAsync) next;
uint32_t td;
uint32_t token;
int8_t valid;
@ -145,8 +145,7 @@ typedef struct UHCIState {
uint32_t pending_int_mask;
/* Active packets */
UHCIAsync *async_pending;
UHCIAsync *async_pool;
QTAILQ_HEAD(,UHCIAsync) async_pending;
uint8_t num_ports_vmstate;
} UHCIState;
@ -172,7 +171,6 @@ static UHCIAsync *uhci_async_alloc(UHCIState *s)
async->token = 0;
async->done = 0;
async->isoc = 0;
async->next = NULL;
return async;
}
@ -184,24 +182,12 @@ static void uhci_async_free(UHCIState *s, UHCIAsync *async)
static void uhci_async_link(UHCIState *s, UHCIAsync *async)
{
async->next = s->async_pending;
s->async_pending = async;
QTAILQ_INSERT_HEAD(&s->async_pending, async, next);
}
static void uhci_async_unlink(UHCIState *s, UHCIAsync *async)
{
UHCIAsync *curr = s->async_pending;
UHCIAsync **prev = &s->async_pending;
while (curr) {
if (curr == async) {
*prev = curr->next;
return;
}
prev = &curr->next;
curr = curr->next;
}
QTAILQ_REMOVE(&s->async_pending, async, next);
}
static void uhci_async_cancel(UHCIState *s, UHCIAsync *async)
@ -220,11 +206,10 @@ static void uhci_async_cancel(UHCIState *s, UHCIAsync *async)
*/
static UHCIAsync *uhci_async_validate_begin(UHCIState *s)
{
UHCIAsync *async = s->async_pending;
UHCIAsync *async;
while (async) {
QTAILQ_FOREACH(async, &s->async_pending, next) {
async->valid--;
async = async->next;
}
return NULL;
}
@ -234,47 +219,30 @@ static UHCIAsync *uhci_async_validate_begin(UHCIState *s)
*/
static void uhci_async_validate_end(UHCIState *s)
{
UHCIAsync *curr = s->async_pending;
UHCIAsync **prev = &s->async_pending;
UHCIAsync *next;
UHCIAsync *curr, *n;
while (curr) {
QTAILQ_FOREACH_SAFE(curr, &s->async_pending, next, n) {
if (curr->valid > 0) {
prev = &curr->next;
curr = curr->next;
continue;
}
next = curr->next;
/* Unlink */
*prev = next;
uhci_async_unlink(s, curr);
uhci_async_cancel(s, curr);
curr = next;
}
}
static void uhci_async_cancel_all(UHCIState *s)
{
UHCIAsync *curr = s->async_pending;
UHCIAsync *next;
while (curr) {
next = curr->next;
UHCIAsync *curr, *n;
QTAILQ_FOREACH_SAFE(curr, &s->async_pending, next, n) {
uhci_async_unlink(s, curr);
uhci_async_cancel(s, curr);
curr = next;
}
s->async_pending = NULL;
}
static UHCIAsync *uhci_async_find_td(UHCIState *s, uint32_t addr, uint32_t token)
{
UHCIAsync *async = s->async_pending;
UHCIAsync *async;
UHCIAsync *match = NULL;
int count = 0;
@ -291,7 +259,7 @@ static UHCIAsync *uhci_async_find_td(UHCIState *s, uint32_t addr, uint32_t token
* If we ever do we'd want to optimize this algorithm.
*/
while (async) {
QTAILQ_FOREACH(async, &s->async_pending, next) {
if (async->token == token) {
/* Good match */
match = async;
@ -301,8 +269,6 @@ static UHCIAsync *uhci_async_find_td(UHCIState *s, uint32_t addr, uint32_t token
break;
}
}
async = async->next;
count++;
}
@ -1137,6 +1103,7 @@ static int usb_uhci_common_initfn(UHCIState *s)
s->expire_time = qemu_get_clock_ns(vm_clock) +
(get_ticks_per_sec() / FRAME_TIMER_FREQ);
s->num_ports_vmstate = NB_PORTS;
QTAILQ_INIT(&s->async_pending);
qemu_register_reset(uhci_reset, s);