C++ (Cpp) dbg_cmd Examples

Example #1

File: ehci-omap.c Project: Aircell/asp-kernel

static int ehci_omap_bus_resume(struct usb_hcd *hcd)
{
	struct ehci_hcd_omap *omap = platform_get_drvdata(to_platform_device(hcd->self.controller));
	struct ehci_hcd *ehci = omap->ehci;
	struct usb_bus *bus = hcd_to_bus(hcd);

	int ret;

#ifdef CONFIG_LOGIC_OMAP3530_USB3320_HACK
	/* Remove the GPIO hack; this allows the controller to talk to the PHY again */
	usb3320_hack_remove();
#endif // CONFIG_LOGIC_OMAP3530_USB3320_HACK

	ehci_omap_dev_resume(bus->controller);
	
	omap_init_uhh_registers(omap, hcd);
	
	/* Initial setup code from the EHCI driver */
	ehci_writel(ehci, ehci->periodic_dma, &ehci->regs->frame_list);
        ehci_writel(ehci, (u32)ehci->async->qh_dma, &ehci->regs->async_next);

	ehci->command &= ~(CMD_LRESET|CMD_IAAD|CMD_PSE|CMD_ASE|CMD_RESET);
	ehci->command |= CMD_RUN;

	ehci_writel(ehci, ehci->command, &ehci->regs->command);
	dbg_cmd (ehci, "init", ehci->command);

	ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
        ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */

	/* Give it time to sink in */
	msleep(5);
	
	/* reset the USB PHY */
	if (omap->phy_reset)
		ehci_omap_phy_reset(omap);
	
	ehci_writel(omap->ehci, CMD_RUN, &omap->ehci->regs->command);
	
	msleep(1);
	
	ehci_port_power(ehci, 1);

	msleep(1);

	ret = ehci_bus_resume(hcd);

	return ret;
}

Example #2

File: ehci-hcd.c Project: foxsat-hdr/linux-kernel

/* reset a non-running (STS_HALT == 1) controller */
static int ehci_reset (struct ehci_hcd *ehci)
{
	int	retval;
	u32	command = readl (&ehci->regs->command);

	command |= CMD_RESET;
	dbg_cmd (ehci, "reset", command);
	writel (command, &ehci->regs->command);
	ehci_to_hcd(ehci)->state = HC_STATE_HALT;
	ehci->next_statechange = jiffies;
	retval = handshake (&ehci->regs->command, CMD_RESET, 0, 250 * 1000);

	if (retval)
		return retval;

	if (ehci_is_TDI(ehci))
		tdi_reset (ehci);

	return retval;
}

Example #3

File: ehci-hcd.c Project: franjoweb/liquid_chocolate_ics_kernel

static irqreturn_t ehci_irq (struct usb_hcd *hcd)
{
	struct ehci_hcd		*ehci = hcd_to_ehci (hcd);
	u32			status, masked_status, pcd_status = 0, cmd;
	int			bh;

	spin_lock (&ehci->lock);

	status = ehci_readl(ehci, &ehci->regs->status);

	/* e.g. cardbus physical eject */
	if (status == ~(u32) 0) {
		ehci_dbg (ehci, "device removed\n");
		goto dead;
	}

	masked_status = status & INTR_MASK;
	if (!masked_status) {		/* irq sharing? */
		spin_unlock(&ehci->lock);
		return IRQ_NONE;
	}

	/* clear (just) interrupts */
	ehci_writel(ehci, masked_status, &ehci->regs->status);
	cmd = ehci_readl(ehci, &ehci->regs->command);
	bh = 0;

#ifdef	VERBOSE_DEBUG
	/* unrequested/ignored: Frame List Rollover */
	dbg_status (ehci, "irq", status);
#endif

	/* INT, ERR, and IAA interrupt rates can be throttled */

	/* normal [4.15.1.2] or error [4.15.1.1] completion */
	if (likely ((status & (STS_INT|STS_ERR)) != 0)) {
		if (likely ((status & STS_ERR) == 0))
			COUNT (ehci->stats.normal);
		else
			COUNT (ehci->stats.error);
		bh = 1;
	}

	/* complete the unlinking of some qh [4.15.2.3] */
	if (status & STS_IAA) {
		/* guard against (alleged) silicon errata */
		if (cmd & CMD_IAAD) {
			ehci_writel(ehci, cmd & ~CMD_IAAD,
					&ehci->regs->command);
			ehci_dbg(ehci, "IAA with IAAD still set?\n");
		}
		if (ehci->reclaim) {
			COUNT(ehci->stats.reclaim);
			end_unlink_async(ehci);
		} else
			ehci_dbg(ehci, "IAA with nothing to reclaim?\n");
	}

	/* remote wakeup [4.3.1] */
	if (status & STS_PCD) {
		unsigned	i = HCS_N_PORTS (ehci->hcs_params);

		/* kick root hub later */
		pcd_status = status;

		/* resume root hub? */
		if (!(cmd & CMD_RUN))
			usb_hcd_resume_root_hub(hcd);

		while (i--) {
			int pstatus = ehci_readl(ehci,
						 &ehci->regs->port_status [i]);

			if (pstatus & PORT_OWNER)
				continue;
			if (!(test_bit(i, &ehci->suspended_ports) &&
					((pstatus & PORT_RESUME) ||
						!(pstatus & PORT_SUSPEND)) &&
					(pstatus & PORT_PE) &&
					ehci->reset_done[i] == 0))
				continue;

			/* start 20 msec resume signaling from this port,
			 * and make khubd collect PORT_STAT_C_SUSPEND to
			 * stop that signaling.
			 */
			ehci->reset_done [i] = jiffies + msecs_to_jiffies (20);
			ehci_dbg (ehci, "port %d remote wakeup\n", i + 1);
			mod_timer(&hcd->rh_timer, ehci->reset_done[i]);
		}
	}

	/* PCI errors [4.15.2.4] */
	if (unlikely ((status & STS_FATAL) != 0)) {
		ehci_err(ehci, "fatal error\n");
		dbg_cmd(ehci, "fatal", cmd);
		dbg_status(ehci, "fatal", status);
		ehci_halt(ehci);
dead:
		ehci_reset(ehci);
		ehci_writel(ehci, 0, &ehci->regs->configured_flag);
		/* generic layer kills/unlinks all urbs, then
		 * uses ehci_stop to clean up the rest
		 */
		bh = 1;
	}

	if (bh)
		ehci_work (ehci);
	spin_unlock (&ehci->lock);
	if (pcd_status)
		usb_hcd_poll_rh_status(hcd);
	return IRQ_HANDLED;
}