static void ace_fsm_tasklet(unsigned long data)
{
struct ace_device *ace = (void *)data;
unsigned long flags;
spin_lock_irqsave(&ace->lock, flags);
/* Loop over state machine until told to stop */
ace->fsm_continue_flag = 1;
while (ace->fsm_continue_flag)
ace_fsm_dostate(ace);
spin_unlock_irqrestore(&ace->lock, flags);
}
static void ace_stall_timer(unsigned long data)
{
struct ace_device *ace = (void *)data;
unsigned long flags;
dev_warn(ace->dev,
"kicking stalled fsm; state=%i task=%i iter=%i dc=%i\n",
ace->fsm_state, ace->fsm_task, ace->fsm_iter_num,
ace->data_count);
spin_lock_irqsave(&ace->lock, flags);
mod_timer(&ace->stall_timer, jiffies + HZ);
ace->fsm_continue_flag = 1;
while (ace->fsm_continue_flag)
ace_fsm_dostate(ace);
spin_unlock_irqrestore(&ace->lock, flags);
}
static void ace_stall_timer(unsigned long data)
{
struct ace_device *ace = (void *)data;
unsigned long flags;
dev_warn(ace->dev,
"kicking stalled fsm; state=%i task=%i iter=%i dc=%i\n",
ace->fsm_state, ace->fsm_task, ace->fsm_iter_num,
ace->data_count);
spin_lock_irqsave(&ace->lock, flags);
/* Rearm the stall timer *before* entering FSM (which may then
* delete the timer) */
mod_timer(&ace->stall_timer, jiffies + HZ);
/* Loop over state machine until told to stop */
ace->fsm_continue_flag = 1;
while (ace->fsm_continue_flag)
ace_fsm_dostate(ace);
spin_unlock_irqrestore(&ace->lock, flags);
}
static irqreturn_t ace_interrupt(int irq, void *dev_id)
{
u16 creg;
struct ace_device *ace = dev_id;
/* be safe and get the lock */
spin_lock(&ace->lock);
ace->in_irq = 1;
/* clear the interrupt */
creg = ace_in(ace, ACE_CTRL);
ace_out(ace, ACE_CTRL, creg | ACE_CTRL_RESETIRQ);
ace_out(ace, ACE_CTRL, creg);
/* check for IO failures */
if (ace_interrupt_checkstate(ace))
ace->data_result = -EIO;
if (ace->fsm_task == 0) {
dev_err(ace->dev,
"spurious irq; stat=%.8x ctrl=%.8x cmd=%.4x\n",
ace_in32(ace, ACE_STATUS), ace_in32(ace, ACE_CTRL),
ace_in(ace, ACE_SECCNTCMD));
dev_err(ace->dev, "fsm_task=%i fsm_state=%i data_count=%i\n",
ace->fsm_task, ace->fsm_state, ace->data_count);
}
/* Loop over state machine until told to stop */
ace->fsm_continue_flag = 1;
while (ace->fsm_continue_flag)
ace_fsm_dostate(ace);
/* done with interrupt; drop the lock */
ace->in_irq = 0;
spin_unlock(&ace->lock);
return IRQ_HANDLED;
}
static irqreturn_t ace_interrupt(int irq, void *dev_id)
{
u16 creg;
struct ace_device *ace = dev_id;
/* */
spin_lock(&ace->lock);
ace->in_irq = 1;
/* */
creg = ace_in(ace, ACE_CTRL);
ace_out(ace, ACE_CTRL, creg | ACE_CTRL_RESETIRQ);
ace_out(ace, ACE_CTRL, creg);
/* */
if (ace_interrupt_checkstate(ace))
ace->data_result = -EIO;
if (ace->fsm_task == 0) {
dev_err(ace->dev,
"spurious irq; stat=%.8x ctrl=%.8x cmd=%.4x\n",
ace_in32(ace, ACE_STATUS), ace_in32(ace, ACE_CTRL),
ace_in(ace, ACE_SECCNTCMD));
dev_err(ace->dev, "fsm_task=%i fsm_state=%i data_count=%i\n",
ace->fsm_task, ace->fsm_state, ace->data_count);
}
/* */
ace->fsm_continue_flag = 1;
while (ace->fsm_continue_flag)
ace_fsm_dostate(ace);
/* */
ace->in_irq = 0;
spin_unlock(&ace->lock);
return IRQ_HANDLED;
}