cx88-mpeg.c

V4l driver for DVB HD

		buf->vb.state = STATE_ERROR;
		wake_up(&buf->vb.done);
		dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
			buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
	}
	if (restart)
	{
		dprintk(1, "restarting queue\n" );
		cx8802_restart_queue(dev,q);
	}
	spin_unlock_irqrestore(&dev->slock,flags);
}

void cx8802_cancel_buffers(struct cx8802_dev *dev)
{
	struct cx88_dmaqueue *q = &dev->mpegq;

	dprintk( 1, "cx8802_cancel_buffers" );
	del_timer_sync(&q->timeout);
	cx8802_stop_dma(dev);
	do_cancel_buffers(dev,"cancel",0);
}

static void cx8802_timeout(unsigned long data)
{
	struct cx8802_dev *dev = (struct cx8802_dev*)data;

	dprintk(0, "%s\n",__FUNCTION__);

	if (debug)
		cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
	cx8802_stop_dma(dev);
	do_cancel_buffers(dev,"timeout",1);
}

static char *cx88_mpeg_irqs[32] = {
	"ts_risci1", NULL, NULL, NULL,
	"ts_risci2", NULL, NULL, NULL,
	"ts_oflow",  NULL, NULL, NULL,
	"ts_sync",   NULL, NULL, NULL,
	"opc_err", "par_err", "rip_err", "pci_abort",
	"ts_err?",
};

static void cx8802_mpeg_irq(struct cx8802_dev *dev)
{
	struct cx88_core *core = dev->core;
	u32 status, mask, count;

	dprintk( 1, "cx8802_mpeg_irq\n" );
	status = cx_read(MO_TS_INTSTAT);
	mask   = cx_read(MO_TS_INTMSK);
	if (0 == (status & mask))
		return;

	cx_write(MO_TS_INTSTAT, status);

	if (debug || (status & mask & ~0xff))
		cx88_print_irqbits(core->name, "irq mpeg ",
				   cx88_mpeg_irqs, status, mask);

	/* risc op code error */
	if (status & (1 << 16)) {
		printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
		cx_clear(MO_TS_DMACNTRL, 0x11);
		cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
	}

	/* risc1 y */
	if (status & 0x01) {
		dprintk( 1, "wake up\n" );
		spin_lock(&dev->slock);
		count = cx_read(MO_TS_GPCNT);
		cx88_wakeup(dev->core, &dev->mpegq, count);
		spin_unlock(&dev->slock);
	}

	/* risc2 y */
	if (status & 0x10) {
		spin_lock(&dev->slock);
		cx8802_restart_queue(dev,&dev->mpegq);
		spin_unlock(&dev->slock);
	}

	/* other general errors */
	if (status & 0x1f0100) {
		dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
		spin_lock(&dev->slock);
		cx8802_stop_dma(dev);
		cx8802_restart_queue(dev,&dev->mpegq);
		spin_unlock(&dev->slock);
	}
}

#define MAX_IRQ_LOOP 10

static irqreturn_t cx8802_irq(int irq, void *dev_id, struct pt_regs *regs)
{
	struct cx8802_dev *dev = dev_id;
	struct cx88_core *core = dev->core;
	u32 status;
	int loop, handled = 0;

	for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
		status = cx_read(MO_PCI_INTSTAT) & (core->pci_irqmask | 0x04);
		if (0 == status)
			goto out;
		dprintk( 1, "cx8802_irq\n" );
		dprintk( 1, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
		dprintk( 1, "    status: %d\n", status );
		handled = 1;
		cx_write(MO_PCI_INTSTAT, status);

		if (status & core->pci_irqmask)
			cx88_core_irq(core,status);
		if (status & 0x04)
			cx8802_mpeg_irq(dev);
	};
	if (MAX_IRQ_LOOP == loop) {
		dprintk( 0, "clearing mask\n" );
		printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
		       core->name);
		cx_write(MO_PCI_INTMSK,0);
	}

 out:
	return IRQ_RETVAL(handled);
}

/* ----------------------------------------------------------- */
/* exported stuff                                              */

int cx8802_init_common(struct cx8802_dev *dev)
{
	struct cx88_core *core = dev->core;
	int err;

	/* pci init */
	if (pci_enable_device(dev->pci))
		return -EIO;
	pci_set_master(dev->pci);
	if (!pci_dma_supported(dev->pci,0xffffffff)) {
		printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
		return -EIO;
	}

	pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
	pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER,  &dev->pci_lat);
	printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
	       "latency: %d, mmio: 0x%lx\n", dev->core->name,
	       pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
	       dev->pci_lat,pci_resource_start(dev->pci,0));

	/* initialize driver struct */
#if 0
	/* moved to cx88_core_get */
	init_MUTEX(&core->lock);
#endif
	spin_lock_init(&dev->slock);

	/* init dma queue */
	INIT_LIST_HEAD(&dev->mpegq.active);
	INIT_LIST_HEAD(&dev->mpegq.queued);
	dev->mpegq.timeout.function = cx8802_timeout;
	dev->mpegq.timeout.data     = (unsigned long)dev;
	init_timer(&dev->mpegq.timeout);
	cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
			  MO_TS_DMACNTRL,0x11,0x00);

	/* get irq */
	err = request_irq(dev->pci->irq, cx8802_irq,
			  SA_SHIRQ | SA_INTERRUPT, dev->core->name, dev);
	if (err < 0) {
		printk(KERN_ERR "%s: can't get IRQ %d\n",
		       dev->core->name, dev->pci->irq);
		return err;
	}
	cx_set(MO_PCI_INTMSK, core->pci_irqmask);

	/* everything worked */
	pci_set_drvdata(dev->pci,dev);
	return 0;
}

void cx8802_fini_common(struct cx8802_dev *dev)
{
	dprintk( 2, "cx8802_fini_common\n" );
	cx8802_stop_dma(dev);
	pci_disable_device(dev->pci);

	/* unregister stuff */
	free_irq(dev->pci->irq, dev);
	pci_set_drvdata(dev->pci, NULL);

	/* free memory */
	btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
}

/* ----------------------------------------------------------- */

int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
{
	struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
	struct cx88_core *core = dev->core;

	/* stop mpeg dma */
	spin_lock(&dev->slock);
	if (!list_empty(&dev->mpegq.active)) {
		dprintk( 2, "suspend\n" );
		printk("%s: suspend mpeg\n", core->name);
		cx8802_stop_dma(dev);
		del_timer(&dev->mpegq.timeout);
	}
	spin_unlock(&dev->slock);

#if 1
	/* FIXME -- shutdown device */
	cx88_shutdown(dev->core);
#endif

#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,10)
	pci_save_state(pci_dev, dev->state.pci_cfg);
#else
	pci_save_state(pci_dev);
#endif
	if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
		pci_disable_device(pci_dev);
		dev->state.disabled = 1;
	}
	return 0;
}

int cx8802_resume_common(struct pci_dev *pci_dev)
{
	struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
	struct cx88_core *core = dev->core;
	int err;

	if (dev->state.disabled) {
		err=pci_enable_device(pci_dev);
		if (err) {
			printk(KERN_ERR "%s: can't enable device\n",
					       dev->core->name);
			return err;
		}
		dev->state.disabled = 0;
	}
	err=pci_set_power_state(pci_dev, PCI_D0);
	if (err) {
		printk(KERN_ERR "%s: can't enable device\n",
					       dev->core->name);
		pci_disable_device(pci_dev);
		dev->state.disabled = 1;

		return err;
	}
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,10)
	pci_restore_state(pci_dev, dev->state.pci_cfg);
#else
	pci_restore_state(pci_dev);
#endif

#if 1
	/* FIXME: re-initialize hardware */
	cx88_reset(dev->core);
#endif

	/* restart video+vbi capture */
	spin_lock(&dev->slock);
	if (!list_empty(&dev->mpegq.active)) {
		printk("%s: resume mpeg\n", core->name);
		cx8802_restart_queue(dev,&dev->mpegq);
	}
	spin_unlock(&dev->slock);

	return 0;
}

/* ----------------------------------------------------------- */

EXPORT_SYMBOL(cx8802_buf_prepare);
EXPORT_SYMBOL(cx8802_buf_queue);
EXPORT_SYMBOL(cx8802_cancel_buffers);

EXPORT_SYMBOL(cx8802_init_common);
EXPORT_SYMBOL(cx8802_fini_common);

EXPORT_SYMBOL(cx8802_suspend_common);
EXPORT_SYMBOL(cx8802_resume_common);

/* ----------------------------------------------------------- */
/*
 * Local variables:
 * c-basic-offset: 8
 * End:
 * kate: eol "unix"; indent-width 3; remove-trailing-space on; replace-trailing-space-save on; tab-width 8; replace-tabs off; space-indent off; mixed-indent off
 */