X-Git-Url: http://git.rohieb.name/openwrt.git/blobdiff_plain/9f72687ef4da640cf464412e5fe92361e4811cbb..6c9a138d3cc4bc33bced2352c18c630a9c70fd84:/target/linux/adm5120/files/drivers/usb/host/adm5120-hcd.c?ds=sidebyside

diff --git a/target/linux/adm5120/files/drivers/usb/host/adm5120-hcd.c b/target/linux/adm5120/files/drivers/usb/host/adm5120-hcd.c
index fae5aa64f..30fe132d9 100644
--- a/target/linux/adm5120/files/drivers/usb/host/adm5120-hcd.c
+++ b/target/linux/adm5120/files/drivers/usb/host/adm5120-hcd.c
@@ -45,14 +45,13 @@
 #include "../core/hcd.h"
 #include "../core/hub.h"
 
-#define DRIVER_VERSION	"v0.02"
+#define DRIVER_VERSION	"v0.10"
 #define DRIVER_AUTHOR	"Gabor Juhos <juhosg at openwrt.org>"
 #define DRIVER_DESC	"ADMtek USB 1.1 Host Controller Driver"
 
 /*-------------------------------------------------------------------------*/
 
-#define ADMHC_VERBOSE_DEBUG	/* not always helpful */
-#undef LATE_ED_SCHEDULE
+#undef ADMHC_VERBOSE_DEBUG	/* not always helpful */
 
 /* For initializing controller (mask in an HCFS mode too) */
 #define	OHCI_CONTROL_INIT	OHCI_CTRL_CBSR
@@ -73,9 +72,10 @@ static void admhc_dump(struct admhcd *ahcd, int verbose);
 static int admhc_init(struct admhcd *ahcd);
 static void admhc_stop(struct usb_hcd *hcd);
 
-#include "adm5120-hub.c"
 #include "adm5120-dbg.c"
 #include "adm5120-mem.c"
+#include "adm5120-pm.c"
+#include "adm5120-hub.c"
 #include "adm5120-q.c"
 
 /*-------------------------------------------------------------------------*/
@@ -92,7 +92,7 @@ static int admhc_urb_enqueue(struct usb_hcd *hcd, struct usb_host_endpoint *ep,
 	unsigned int	pipe = urb->pipe;
 	int		td_cnt = 0;
 	unsigned long	flags;
-	int		retval = 0;
+	int		ret = 0;
 
 #ifdef ADMHC_VERBOSE_DEBUG
 	spin_lock_irqsave(&ahcd->lock, flags);
@@ -114,12 +114,10 @@ static int admhc_urb_enqueue(struct usb_hcd *hcd, struct usb_host_endpoint *ep,
 
 		/* 1 TD for setup, 1 for ACK, plus ... */
 		td_cnt = 2;
-		if (urb->transfer_buffer_length)
-			td_cnt++;
-		break;
+		/* FALLTHROUGH */
 	case PIPE_BULK:
 		/* one TD for every 4096 Bytes (can be upto 8K) */
-		td_cnt = urb->transfer_buffer_length / TD_DATALEN_MAX;
+		td_cnt += urb->transfer_buffer_length / TD_DATALEN_MAX;
 		/* ... and for any remaining bytes ... */
 		if ((urb->transfer_buffer_length % TD_DATALEN_MAX) != 0)
 			td_cnt++;
@@ -155,16 +153,15 @@ static int admhc_urb_enqueue(struct usb_hcd *hcd, struct usb_host_endpoint *ep,
 		return -ENOMEM;
 
 	urb_priv->ed = ed;
-	urb_priv->urb = urb;
 
 	spin_lock_irqsave(&ahcd->lock, flags);
 	/* don't submit to a dead HC */
 	if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) {
-		retval = -ENODEV;
+		ret = -ENODEV;
 		goto fail;
 	}
 	if (!HC_IS_RUNNING(hcd->state)) {
-		retval = -ENODEV;
+		ret = -ENODEV;
 		goto fail;
 	}
 
@@ -174,12 +171,17 @@ static int admhc_urb_enqueue(struct usb_hcd *hcd, struct usb_host_endpoint *ep,
 		spin_unlock(&urb->lock);
 		urb->hcpriv = urb_priv;
 		finish_urb(ahcd, urb);
-		retval = 0;
+		ret = 0;
 		goto fail;
 	}
 
-	if (ed->type == PIPE_ISOCHRONOUS) {
-		if (ed->state == ED_NEW) {
+	/* schedule the ed if needed */
+	if (ed->state == ED_IDLE) {
+		ret = ed_schedule(ahcd, ed);
+		if (ret < 0)
+			goto fail0;
+
+		if (ed->type == PIPE_ISOCHRONOUS) {
 			u16	frame = admhc_frame_no(ahcd);
 
 			/* delay a few frames before the first TD */
@@ -191,29 +193,28 @@ static int admhc_urb_enqueue(struct usb_hcd *hcd, struct usb_host_endpoint *ep,
 			/* yes, only URB_ISO_ASAP is supported, and
 			 * urb->start_frame is never used as input.
 			 */
-		} else
-			urb->start_frame = ed->last_iso + ed->interval;
-	}
+		}
+	} else if (ed->type == PIPE_ISOCHRONOUS)
+		urb->start_frame = ed->last_iso + ed->interval;
 
+	/* fill the TDs and link them to the ed; and
+	 * enable that part of the schedule, if needed
+	 * and update count of queued periodic urbs
+	 */
 	urb->hcpriv = urb_priv;
-	td_submit_urb(ahcd, urb_priv->urb);
-
-	/* append it to the ED's queue */
-	list_add_tail(&urb_priv->pending, &ed->urb_pending);
-
-	/* schedule the ED */
-	retval = ed_schedule(ahcd, ed);
+	td_submit_urb(ahcd, urb);
 
+#ifdef ADMHC_VERBOSE_DEBUG
+	admhc_dump_ed(ahcd, "admhc_urb_enqueue", urb_priv->ed, 1);
+#endif
 fail0:
 	spin_unlock(&urb->lock);
 fail:
-	if (retval) {
-		urb_priv = urb->hcpriv;
+	if (ret)
 		urb_priv_free(ahcd, urb_priv);
-	}
 
 	spin_unlock_irqrestore(&ahcd->lock, flags);
-	return retval;
+	return ret;
 }
 
 /*
@@ -225,43 +226,32 @@ fail:
 static int admhc_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
 {
 	struct admhcd *ahcd = hcd_to_admhcd(hcd);
-	struct urb_priv *up;
 	unsigned long flags;
 
-	up = urb->hcpriv;
-	if (!up)
-		return 0;
-
-	spin_lock_irqsave(&ahcd->lock, flags);
-
 #ifdef ADMHC_VERBOSE_DEBUG
-	urb_print(ahcd, urb, "DEQEUE", 1);
+	urb_print(ahcd, urb, "DEQUEUE", 1);
 #endif
 
+	spin_lock_irqsave(&ahcd->lock, flags);
 	if (HC_IS_RUNNING(hcd->state)) {
+		struct urb_priv *urb_priv;
+
 		/* Unless an IRQ completed the unlink while it was being
 		 * handed to us, flag it for unlink and giveback, and force
 		 * some upcoming INTR_SF to call finish_unlinks()
 		 */
-		if (up->ed->urb_active != up) {
-			list_del(&up->pending);
-			finish_urb(ahcd, urb);
-		} else {
-			ed_start_deschedule(ahcd, up->ed);
+		urb_priv = urb->hcpriv;
+		if (urb_priv) {
+			if (urb_priv->ed->state == ED_OPER)
+				start_ed_unlink(ahcd, urb_priv->ed);
 		}
 	} else {
 		/*
 		 * with HC dead, we won't respect hc queue pointers
 		 * any more ... just clean up every urb's memory.
 		 */
-		if (up->ed->urb_active != up) {
-			list_del(&up->pending);
-			finish_urb(ahcd, urb);
-		} else {
+		if (urb->hcpriv)
 			finish_urb(ahcd, urb);
-			up->ed->urb_active = NULL;
-			up->ed->state = ED_IDLE;
-		}
 	}
 	spin_unlock_irqrestore(&ahcd->lock, flags);
 
@@ -273,6 +263,7 @@ static int admhc_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
 /* frees config/altsetting state for endpoints,
  * including ED memory, dummy TD, and bulk/intr data toggle
  */
+
 static void admhc_endpoint_disable(struct usb_hcd *hcd,
 		struct usb_host_endpoint *ep)
 {
@@ -298,8 +289,8 @@ rescan:
 
 	if (!HC_IS_RUNNING(hcd->state)) {
 sanitize:
-		ed->state = ED_UNLINK;
-		admhc_finish_unlinks(ahcd, 0);
+		ed->state = ED_IDLE;
+		finish_unlinks(ahcd, 0);
 	}
 
 	switch (ed->state) {
@@ -312,11 +303,10 @@ sanitize:
 		spin_unlock_irqrestore(&ahcd->lock, flags);
 		schedule_timeout_uninterruptible(1);
 		goto rescan;
-	case ED_IDLE:
-	case ED_NEW:		/* fully unlinked */
-		if (list_empty(&ed->urb_pending)) {
-			td_free(ahcd, ed->dummy);
-			ed_free(ahcd, ed);
+	case ED_IDLE:		/* fully unlinked */
+		if (list_empty(&ed->td_list)) {
+			td_free (ahcd, ed->dummy);
+			ed_free (ahcd, ed);
 			break;
 		}
 		/* else FALL THROUGH */
@@ -324,11 +314,10 @@ sanitize:
 		/* caller was supposed to have unlinked any requests;
 		 * that's not our job.  can't recover; must leak ed.
 		 */
-		admhc_err(ahcd, "leak ed %p (#%02x) %s act %p%s\n",
-			ed, ep->desc.bEndpointAddress,
-			ed_statestring(ed->state),
-			ed->urb_active,
-			list_empty(&ed->urb_pending) ? "" : " (has urbs)");
+		admhc_err(ahcd, "leak ed %p (#%02x) state %d%s\n",
+			ed, ep->desc.bEndpointAddress, ed->state,
+			list_empty(&ed->td_list) ? "" : " (has tds)");
+		td_free(ahcd, ed->dummy);
 		break;
 	}
 
@@ -338,7 +327,7 @@ sanitize:
 	return;
 }
 
-static int admhc_get_frame(struct usb_hcd *hcd)
+static int admhc_get_frame_number(struct usb_hcd *hcd)
 {
 	struct admhcd *ahcd = hcd_to_admhcd(hcd);
 
@@ -347,8 +336,15 @@ static int admhc_get_frame(struct usb_hcd *hcd)
 
 static void admhc_usb_reset(struct admhcd *ahcd)
 {
+#if 0
+	ahcd->hc_control = admhc_readl(ahcd, &ahcd->regs->control);
+	ahcd->hc_control &= OHCI_CTRL_RWC;
+	admhc_writel(ahcd, ahcd->hc_control, &ahcd->regs->control);
+#else
+	/* FIXME */
 	ahcd->host_control = ADMHC_BUSS_RESET;
 	admhc_writel(ahcd, ahcd->host_control ,&ahcd->regs->host_control);
+#endif
 }
 
 /* admhc_shutdown forcibly disables IRQs and DMA, helping kexec and
@@ -467,7 +463,7 @@ static int admhc_init(struct admhcd *ahcd)
 
 	/* Read the number of ports unless overridden */
 	if (ahcd->num_ports == 0)
-		ahcd->num_ports = admhc_get_rhdesc(ahcd) & ADMHC_RH_NUMP;
+		ahcd->num_ports = admhc_read_rhdesc(ahcd) & ADMHC_RH_NUMP;
 
 	ret = admhc_mem_init(ahcd);
 	if (ret)
@@ -509,10 +505,21 @@ static int admhc_run(struct admhcd *ahcd)
 			admhc_dbg(ahcd, "fminterval delta %d\n",
 				ahcd->fminterval - FI);
 		ahcd->fminterval |=
-			(FSLDP (ahcd->fminterval) << ADMHC_SFI_FSLDP_SHIFT);
+			(FSLDP(ahcd->fminterval) << ADMHC_SFI_FSLDP_SHIFT);
 		/* also: power/overcurrent flags in rhdesc */
 	}
 
+#if 0	/* TODO: not applicable */
+	/* Reset USB nearly "by the book".  RemoteWakeupConnected was
+	 * saved if boot firmware (BIOS/SMM/...) told us it's connected,
+	 * or if bus glue did the same (e.g. for PCI add-in cards with
+	 * PCI PM support).
+	 */
+	if ((ahcd->hc_control & OHCI_CTRL_RWC) != 0
+			&& !device_may_wakeup(hcd->self.controller))
+		device_init_wakeup(hcd->self.controller, 1);
+#endif
+
 	switch (ahcd->host_control & ADMHC_HC_BUSS) {
 	case ADMHC_BUSS_OPER:
 		temp = 0;
@@ -535,12 +542,11 @@ static int admhc_run(struct admhcd *ahcd)
 	admhc_writel_flush(ahcd);
 
 	msleep(temp);
-	temp = admhc_get_rhdesc(ahcd);
+	temp = admhc_read_rhdesc(ahcd);
 	if (!(temp & ADMHC_RH_NPS)) {
 		/* power down each port */
 		for (temp = 0; temp < ahcd->num_ports; temp++)
-			admhc_writel(ahcd, ADMHC_PS_CPP,
-				&ahcd->regs->portstatus[temp]);
+			admhc_write_portstatus(ahcd, temp, ADMHC_PS_CPP);
 	}
 	/* flush those writes */
 	admhc_writel_flush(ahcd);
@@ -548,7 +554,6 @@ static int admhc_run(struct admhcd *ahcd)
 	/* 2msec timelimit here means no irqs/preempt */
 	spin_lock_irq(&ahcd->lock);
 
-retry:
 	admhc_writel(ahcd, ADMHC_CTRL_SR,  &ahcd->regs->gencontrol);
 	temp = 30;	/* ... allow extra time */
 	while ((admhc_readl(ahcd, &ahcd->regs->gencontrol) & ADMHC_CTRL_SR) != 0) {
@@ -557,7 +562,7 @@ retry:
 			admhc_err(ahcd, "USB HC reset timed out!\n");
 			return -1;
 		}
-		udelay (1);
+		udelay(1);
 	}
 
 	/* enable HOST mode, before access any host specific register */
@@ -650,7 +655,6 @@ static irqreturn_t admhc_irq(struct usb_hcd *hcd)
 
 	ints &= admhc_readl(ahcd, &regs->int_enable);
 
-	spin_lock(&ahcd->lock);
 	if (ints & ADMHC_INTR_FATI) {
 		/* e.g. due to PCI Master/Target Abort */
 		admhc_disable(ahcd);
@@ -660,10 +664,9 @@ static irqreturn_t admhc_irq(struct usb_hcd *hcd)
 	}
 
 	if (ints & ADMHC_INTR_BABI) {
-		admhc_intr_disable(ahcd, ADMHC_INTR_MIE);
+		admhc_intr_disable(ahcd, ADMHC_INTR_BABI);
+		admhc_intr_ack(ahcd, ADMHC_INTR_BABI);
 		admhc_err(ahcd, "Babble Detected\n");
-		admhc_disable(ahcd);
-		admhc_usb_reset(ahcd);
 	}
 
 	if (ints & ADMHC_INTR_INSM) {
@@ -690,17 +693,21 @@ static irqreturn_t admhc_irq(struct usb_hcd *hcd)
 		admhc_intr_ack(ahcd, ADMHC_INTR_RESI);
 		hcd->poll_rh = 1;
 		if (ahcd->autostop) {
+			spin_lock(&ahcd->lock);
 			admhc_rh_resume(ahcd);
+			spin_unlock(&ahcd->lock);
 		} else
 			usb_hcd_resume_root_hub(hcd);
 	}
 
 	if (ints & ADMHC_INTR_TDC) {
+		admhc_vdbg(ahcd, "Transfer Descriptor Complete\n");
 		admhc_intr_ack(ahcd, ADMHC_INTR_TDC);
 		if (HC_IS_RUNNING(hcd->state))
 			admhc_intr_disable(ahcd, ADMHC_INTR_TDC);
-		admhc_vdbg(ahcd, "Transfer Descriptor Complete\n");
+		spin_lock(&ahcd->lock);
 		admhc_td_complete(ahcd);
+		spin_unlock(&ahcd->lock);
 		if (HC_IS_RUNNING(hcd->state))
 			admhc_intr_enable(ahcd, ADMHC_INTR_TDC);
 	}
@@ -710,19 +717,43 @@ static irqreturn_t admhc_irq(struct usb_hcd *hcd)
 		admhc_vdbg(ahcd, "Schedule Overrun\n");
 	}
 
+#if 1
+	spin_lock(&ahcd->lock);
+	if (ahcd->ed_rm_list)
+		finish_unlinks(ahcd, admhc_frame_no(ahcd));
+
+	if ((ints & ADMHC_INTR_SOFI) != 0 && !ahcd->ed_rm_list
+			&& HC_IS_RUNNING(hcd->state))
+		admhc_intr_disable(ahcd, ADMHC_INTR_SOFI);
+	spin_unlock(&ahcd->lock);
+#else
 	if (ints & ADMHC_INTR_SOFI) {
-		admhc_intr_ack(ahcd, ADMHC_INTR_SOFI);
+		admhc_vdbg(ahcd, "Start Of Frame\n");
+		spin_lock(&ahcd->lock);
+
 		/* handle any pending ED removes */
-		admhc_finish_unlinks(ahcd, admhc_frame_no(ahcd));
-		admhc_sof_refill(ahcd);
+		finish_unlinks(ahcd, admhc_frameno(ahcd));
+
+		/* leaving INTR_SOFI enabled when there's still unlinking
+		 * to be done in the (next frame).
+		 */
+		if ((ahcd->ed_rm_list == NULL) ||
+			HC_IS_RUNNING(hcd->state) == 0)
+			/*
+			 * disable INTR_SOFI if there are no unlinking to be
+			 * done (in the next frame)
+			 */
+			admhc_intr_disable(ahcd, ADMHC_INTR_SOFI);
+
+		spin_unlock(&ahcd->lock);
 	}
+#endif
 
 	if (HC_IS_RUNNING(hcd->state)) {
 		admhc_intr_ack(ahcd, ints);
 		admhc_intr_enable(ahcd, ADMHC_INTR_MIE);
 		admhc_writel_flush(ahcd);
 	}
-	spin_unlock(&ahcd->lock);
 
 	return IRQ_HANDLED;
 }
@@ -750,87 +781,6 @@ static void admhc_stop(struct usb_hcd *hcd)
 
 /*-------------------------------------------------------------------------*/
 
-/* must not be called from interrupt context */
-
-#ifdef	CONFIG_PM
-
-static int admhc_restart(struct admhcd *ahcd)
-{
-	int temp;
-	int i;
-	struct urb_priv *priv;
-
-	/* mark any devices gone, so they do nothing till khubd disconnects.
-	 * recycle any "live" eds/tds (and urbs) right away.
-	 * later, khubd disconnect processing will recycle the other state,
-	 * (either as disconnect/reconnect, or maybe someday as a reset).
-	 */
-	spin_lock_irq(&ahcd->lock);
-	admhc_disable(ahcd);
-	usb_root_hub_lost_power(admhcd_to_hcd(ahcd)->self.root_hub);
-	if (!list_empty(&ahcd->pending))
-		admhc_dbg(ahcd, "abort schedule...\n");
-		list_for_each_entry(priv, &ahcd->pending, pending) {
-		struct urb	*urb = priv->td[0]->urb;
-		struct ed	*ed = priv->ed;
-
-		switch (ed->state) {
-		case ED_OPER:
-			ed->state = ED_UNLINK;
-			ed->hwINFO |= cpu_to_hc32(ahcd, ED_DEQUEUE);
-			ed_deschedule (ahcd, ed);
-
-			ed->ed_next = ahcd->ed_rm_list;
-			ed->ed_prev = NULL;
-			ahcd->ed_rm_list = ed;
-			/* FALLTHROUGH */
-		case ED_UNLINK:
-			break;
-		default:
-			admhc_dbg(ahcd, "bogus ed %p state %d\n",
-					ed, ed->state);
-		}
-
-		spin_lock(&urb->lock);
-		urb->status = -ESHUTDOWN;
-		spin_unlock(&urb->lock);
-	}
-	finish_unlinks(ahcd, 0);
-	spin_unlock_irq(&ahcd->lock);
-
-	/* paranoia, in case that didn't work: */
-
-	/* empty the interrupt branches */
-	for (i = 0; i < NUM_INTS; i++) ahcd->load[i] = 0;
-	for (i = 0; i < NUM_INTS; i++) ahcd->hcca->int_table[i] = 0;
-
-	/* no EDs to remove */
-	ahcd->ed_rm_list = NULL;
-
-	/* empty control and bulk lists */
-	ahcd->ed_controltail = NULL;
-	ahcd->ed_bulktail    = NULL;
-
-	if ((temp = admhc_run(ahcd)) < 0) {
-		admhc_err(ahcd, "can't restart, %d\n", temp);
-		return temp;
-	} else {
-		/* here we "know" root ports should always stay powered,
-		 * and that if we try to turn them back on the root hub
-		 * will respond to CSC processing.
-		 */
-		i = ahcd->num_ports;
-		while (i--)
-			admhc_writel(ahcd, RH_PS_PSS,
-				&ahcd->regs->portstatus[i]);
-		admhc_dbg(ahcd, "restart complete\n");
-	}
-	return 0;
-}
-#endif
-
-/*-------------------------------------------------------------------------*/
-
 #ifdef CONFIG_MIPS_ADM5120
 #include "adm5120-drv.c"
 #define PLATFORM_DRIVER		usb_hcd_adm5120_driver
@@ -844,7 +794,7 @@ static int admhc_restart(struct admhcd *ahcd)
 
 static int __init admhc_hcd_mod_init(void)
 {
-	int retval = 0;
+	int ret = 0;
 
 	if (usb_disabled())
 		return -ENODEV;
@@ -854,18 +804,18 @@ static int __init admhc_hcd_mod_init(void)
 		sizeof (struct ed), sizeof (struct td));
 
 #ifdef PLATFORM_DRIVER
-	retval = platform_driver_register(&PLATFORM_DRIVER);
-	if (retval < 0)
+	ret = platform_driver_register(&PLATFORM_DRIVER);
+	if (ret < 0)
 		goto error_platform;
 #endif
 
-	return retval;
+	return ret;
 
 #ifdef PLATFORM_DRIVER
 	platform_driver_unregister(&PLATFORM_DRIVER);
 error_platform:
 #endif
-	return retval;
+	return ret;
 }
 module_init(admhc_hcd_mod_init);