static int
pxa3xx_gcu_wait_free(struct pxa3xx_gcu_priv *priv)
{
int ret = 0;
QDUMP("Waiting for free...");
/* Does not need to be atomic. There's a lock in user space,
* but anyhow, this is just for statistics. */
priv->shared->num_wait_free++;
while (!priv->free) {
u32 rbexhr = gc_readl(priv, REG_GCRBEXHR);
ret = wait_event_interruptible_timeout(priv->wait_free,
priv->free, HZ*4);
if (ret < 0)
break;
if (ret > 0)
continue;
if (gc_readl(priv, REG_GCRBEXHR) == rbexhr) {
QERROR("TIMEOUT");
ret = -ETIMEDOUT;
break;
}
}
QDUMP("done");
return ret;
}
static int
pxa3xx_gcu_wait_idle(struct pxa3xx_gcu_priv *priv)
{
int ret = 0;
QDUMP("Waiting for idle...");
/* Does not need to be atomic. There's a lock in user space,
* but anyhow, this is just for statistics. */
priv->shared->num_wait_idle++;
while (priv->shared->hw_running) {
int num = priv->shared->num_interrupts;
u32 rbexhr = gc_readl(priv, REG_GCRBEXHR);
ret = wait_event_interruptible_timeout(priv->wait_idle,
!priv->shared->hw_running, HZ*4);
if (ret != 0)
break;
if (gc_readl(priv, REG_GCRBEXHR) == rbexhr &&
priv->shared->num_interrupts == num) {
QERROR("TIMEOUT");
ret = -ETIMEDOUT;
break;
}
}
QDUMP("done");
return ret;
}
static int
sh7722_wait_next( SH772xGfxSharedArea *shared )
{
int ret;
QDUMP( "Waiting....." );
/* Does not need to be atomic. There's a lock in user space,
* but anyhow, this is just for statistics. */
shared->num_wait_next++;
ret = wait_event_interruptible_timeout( wait_next, !shared->hw_running ||
shared->next_start == shared->next_end, 42*HZ );
if (!ret) {
printk( KERN_ERR "%s: TIMEOUT! (%srunning, hw %d-%d, next %d-%d - %svalid, "
"STATUS 0x%08x, INT_STATUS 0x%08x)\n",
__FUNCTION__,
shared->hw_running ? "" : "not ",
shared->hw_start,
shared->hw_end,
shared->next_start,
shared->next_end,
shared->next_valid ? "" : "not ",
BEM_HC_STATUS, BEM_HC_INT_STATUS );
}
QDUMP( "........done" );
return (ret > 0) ? 0 : (ret < 0) ? ret : -ETIMEDOUT;
}
static irqreturn_t
pxa3xx_gcu_handle_irq(int irq, void *ctx)
{
struct pxa3xx_gcu_priv *priv = ctx;
struct pxa3xx_gcu_shared *shared = priv->shared;
u32 status = gc_readl(priv, REG_GCISCR) & IE_ALL;
QDUMP("-Interrupt");
if (!status)
return IRQ_NONE;
spin_lock(&priv->spinlock);
shared->num_interrupts++;
if (status & IE_EEOB) {
QDUMP(" [EEOB]");
flush_running(priv);
wake_up_all(&priv->wait_free);
if (priv->ready) {
run_ready(priv);
} else {
/* There is no more data prepared by the userspace.
* Set hw_running = 0 and wait for the next userspace
* kick-off */
shared->num_idle++;
shared->hw_running = 0;
QDUMP(" '-> Idle.");
/* set ring buffer length to zero */
gc_writel(priv, REG_GCRBLR, 0);
wake_up_all(&priv->wait_idle);
}
shared->num_done++;
} else {
QERROR(" [???]");
dump_whole_state(priv);
}
/* Clear the interrupt */
gc_writel(priv, REG_GCISCR, status);
spin_unlock(&priv->spinlock);
return IRQ_HANDLED;
}
static void
run_ready(struct pxa3xx_gcu_priv *priv)
{
unsigned int num = 0;
struct pxa3xx_gcu_shared *shared = priv->shared;
struct pxa3xx_gcu_batch *ready = priv->ready;
QDUMP("Start");
BUG_ON(!ready);
shared->buffer[num++] = 0x05000000;
while (ready) {
shared->buffer[num++] = 0x00000001;
shared->buffer[num++] = ready->phys;
ready = ready->next;
}
shared->buffer[num++] = 0x05000000;
priv->running = priv->ready;
priv->ready = priv->ready_last = NULL;
gc_writel(priv, REG_GCRBLR, 0);
shared->hw_running = 1;
/* ring base address */
gc_writel(priv, REG_GCRBBR, shared->buffer_phys);
/* ring tail address */
gc_writel(priv, REG_GCRBTR, shared->buffer_phys + num * 4);
/* ring length */
gc_writel(priv, REG_GCRBLR, ((num + 63) & ~63) * 4);
}
static void
pxa3xx_gcu_reset(struct pxa3xx_gcu_priv *priv)
{
QDUMP("RESET");
/* disable interrupts */
gc_writel(priv, REG_GCIECR, 0);
/* reset hardware */
gc_writel(priv, REG_GCCR, GCCR_ABORT);
gc_writel(priv, REG_GCCR, 0);
memset(priv->shared, 0, SHARED_SIZE);
priv->shared->buffer_phys = priv->shared_phys;
priv->shared->magic = PXA3XX_GCU_SHARED_MAGIC;
do_gettimeofday(&priv->base_time);
/* set up the ring buffer pointers */
gc_writel(priv, REG_GCRBLR, 0);
gc_writel(priv, REG_GCRBBR, priv->shared_phys);
gc_writel(priv, REG_GCRBTR, priv->shared_phys);
/* enable all IRQs except EOB */
gc_writel(priv, REG_GCIECR, IE_ALL & ~IE_EOB);
}
void
DHMWindow::onAddDAS(const QString &das)
{
QDUMP(das);
if (dasset_.find(das) != dasset_.end())
{
messages_->append(QString("%1 found in DHM list").arg(das));
return;
}
daslist_->addItem(das);
dasset_.insert(das);
messages_->append(QString("%1 inserted into DHM list").arg(das));
}
static void
dump_whole_state(struct pxa3xx_gcu_priv *priv)
{
struct pxa3xx_gcu_shared *sh = priv->shared;
u32 base = gc_readl(priv, REG_GCRBBR);
QDUMP("DUMP");
printk(KERN_DEBUG "== PXA3XX-GCU DUMP ==\n"
"%s, STATUS 0x%02lx, B 0x%08lx [%ld], E %5ld, H %5ld, T %5ld\n",
sh->hw_running ? "running" : "idle ",
gc_readl(priv, REG_GCISCR),
gc_readl(priv, REG_GCRBBR),
gc_readl(priv, REG_GCRBLR),
(gc_readl(priv, REG_GCRBEXHR) - base) / 4,
(gc_readl(priv, REG_GCRBHR) - base) / 4,
(gc_readl(priv, REG_GCRBTR) - base) / 4);
}
void
DHMWindow::onRemoveDAS(const QString &das)
{
QDUMP(das);
if (dasset_.find(das) == dasset_.end())
{
messages_->append(QString("%1 NOT found in DHM list").arg(das));
return;
}
QList<QListWidgetItem*> removelist = daslist_->findItems(das, Qt::MatchExactly);
QList<QListWidgetItem*>::Iterator rit = removelist.begin();
QList<QListWidgetItem*>::Iterator ritend = removelist.end();
for ( ; rit != ritend; ++rit)
{
int row = daslist_->row(*rit);
daslist_->takeItem(row);
dasset_.remove(das);
}
messages_->append(QString("%1 removed from DHM list").arg(das));
}
static int
sh7722_reset( SH772xGfxSharedArea *shared )
{
int i;
do_gettimeofday( &base_time );
QPRINT( "Resetting hardware..." );
BEM_HC_CLOCK = 0;
for (i=0; i<30000; i++);
BEM_HC_CLOCK = 0x1111;
BEM_HC_RESET = 0x1111;
for (i=0; i<30000; i++);
BEM_HC_RESET = 0;
QPRINT( "Initializing shared area..." );
memset( (void*) shared, 0, sizeof(SH772xGfxSharedArea) );
shared->buffer_phys = virt_to_phys(&shared->buffer[0]);
shared->jpeg_phys = virt_to_phys(jpeg_area);
shared->magic = SH7722GFX_SHARED_MAGIC;
QPRINT( "Clearing interrupts..." );
BEM_HC_INT_CLEAR = 0x111111;
BEM_HC_INT_MASK = 0x110011;
BEM_HC_CACHE_FLUSH = 0;
QDUMP( "Ready" );
return 0;
}
void
DHMWindow::onStatusMessage(const QString &message)
{
QDUMP(message);
}
static irqreturn_t
sh7722_tdg_irq( int irq, void *ctx )
{
SH772xGfxSharedArea *shared = ctx;
u32 status = BEM_HC_INT_STATUS;
if (! (status & 0x111111)) {
#ifndef SH7722GFX_IRQ_POLLER
printk( KERN_WARNING "%s: bogus interrupt, INT_STATUS 0x%08x!\n", __FUNCTION__, status );
#endif
return IRQ_NONE;
}
if (status & ~0x100)
QDUMP( "-Interrupt" );
if (status & ~0x101100)
printk( KERN_ERR "%s: error! INT_STATUS 0x%08x!\n", __FUNCTION__, status );
shared->num_interrupts++;
/* Clear the interrupt. */
BEM_HC_INT_CLEAR = status;
if (status & 0x100010) {
if (!shared->hw_running)
printk( KERN_WARNING "%s: hw not running? INT_STATUS 0x%08x!\n", __FUNCTION__, status );
if (status & 0x10) {
printk( KERN_ERR "%s: RUNAWAY! (%srunning, hw %d-%d, next %d-%d - %svalid, "
"STATUS 0x%08x, INT_STATUS 0x%08x)\n",
__FUNCTION__,
shared->hw_running ? "" : "not ",
shared->hw_start,
shared->hw_end,
shared->next_start,
shared->next_end,
shared->next_valid ? "" : "not ",
BEM_HC_STATUS, status );
BEM_HC_RESET = 0x1111;
}
/* Next valid means user space is not in the process of extending the buffer. */
if (shared->next_valid && shared->next_start != shared->next_end) {
shared->hw_start = shared->next_start;
shared->hw_end = shared->next_end;
shared->next_start = shared->next_end = (shared->hw_end + 1 + 3) & ~3;
shared->next_valid = 0;
shared->num_words += shared->hw_end - shared->hw_start;
shared->num_starts++;
QDUMP( " '-> Start!" );
BEM_HC_DMA_ADR = shared->buffer_phys + shared->hw_start*4;
BEM_HC_DMA_START = 1;
wake_up_all( &wait_next );
}
else {
shared->num_idle++;
QDUMP( " '-> Idle." );
BEM_PE_CACHE = 1;
shared->hw_running = 0;
wake_up_all( &wait_next );
wake_up_all( &wait_idle );
}
shared->num_done++;
}
return IRQ_HANDLED;
}
