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path: root/drivers/usb/host/ehci-hcd.c
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Diffstat (limited to 'drivers/usb/host/ehci-hcd.c')
-rw-r--r--drivers/usb/host/ehci-hcd.c113
1 files changed, 24 insertions, 89 deletions
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 5726cb144abf..246e124e6ac5 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -302,6 +302,7 @@ static void ehci_quiesce (struct ehci_hcd *ehci)
static void end_unlink_async(struct ehci_hcd *ehci);
static void unlink_empty_async(struct ehci_hcd *ehci);
+static void unlink_empty_async_suspended(struct ehci_hcd *ehci);
static void ehci_work(struct ehci_hcd *ehci);
static void start_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh);
static void end_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh);
@@ -481,6 +482,9 @@ static int ehci_init(struct usb_hcd *hcd)
* periodic_size can shrink by USBCMD update if hcc_params allows.
*/
ehci->periodic_size = DEFAULT_I_TDPS;
+ INIT_LIST_HEAD(&ehci->async_unlink);
+ INIT_LIST_HEAD(&ehci->async_idle);
+ INIT_LIST_HEAD(&ehci->intr_unlink);
INIT_LIST_HEAD(&ehci->intr_qh_list);
INIT_LIST_HEAD(&ehci->cached_itd_list);
INIT_LIST_HEAD(&ehci->cached_sitd_list);
@@ -669,9 +673,6 @@ int ehci_setup(struct usb_hcd *hcd)
if (retval)
return retval;
- if (ehci_is_TDI(ehci))
- tdi_reset(ehci);
-
ehci_reset(ehci);
return 0;
@@ -748,7 +749,7 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd)
/* guard against (alleged) silicon errata */
if (cmd & CMD_IAAD)
ehci_dbg(ehci, "IAA with IAAD still set?\n");
- if (ehci->async_iaa)
+ if (ehci->iaa_in_progress)
COUNT(ehci->stats.iaa);
end_unlink_async(ehci);
}
@@ -756,7 +757,7 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd)
/* remote wakeup [4.3.1] */
if (status & STS_PCD) {
unsigned i = HCS_N_PORTS (ehci->hcs_params);
- u32 ppcd = 0;
+ u32 ppcd = ~0;
/* kick root hub later */
pcd_status = status;
@@ -773,7 +774,7 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd)
int pstatus;
/* leverage per-port change bits feature */
- if (ehci->has_ppcd && !(ppcd & (1 << i)))
+ if (!(ppcd & (1 << i)))
continue;
pstatus = ehci_readl(ehci,
&ehci->regs->port_status[i]);
@@ -895,17 +896,24 @@ static int ehci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
if (rc)
goto done;
- switch (usb_pipetype (urb->pipe)) {
- // case PIPE_CONTROL:
- // case PIPE_BULK:
- default:
+ if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
+ /*
+ * We don't expedite dequeue for isochronous URBs.
+ * Just wait until they complete normally or their
+ * time slot expires.
+ */
+ } else {
qh = (struct ehci_qh *) urb->hcpriv;
- if (!qh)
- break;
+ qh->exception = 1;
switch (qh->qh_state) {
case QH_STATE_LINKED:
+ if (usb_pipetype(urb->pipe) == PIPE_INTERRUPT)
+ start_unlink_intr(ehci, qh);
+ else
+ start_unlink_async(ehci, qh);
+ break;
case QH_STATE_COMPLETING:
- start_unlink_async(ehci, qh);
+ qh->dequeue_during_giveback = 1;
break;
case QH_STATE_UNLINK:
case QH_STATE_UNLINK_WAIT:
@@ -916,33 +924,6 @@ static int ehci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
qh_completions(ehci, qh);
break;
}
- break;
-
- case PIPE_INTERRUPT:
- qh = (struct ehci_qh *) urb->hcpriv;
- if (!qh)
- break;
- switch (qh->qh_state) {
- case QH_STATE_LINKED:
- case QH_STATE_COMPLETING:
- start_unlink_intr(ehci, qh);
- break;
- case QH_STATE_IDLE:
- qh_completions (ehci, qh);
- break;
- default:
- ehci_dbg (ehci, "bogus qh %p state %d\n",
- qh, qh->qh_state);
- goto done;
- }
- break;
-
- case PIPE_ISOCHRONOUS:
- // itd or sitd ...
-
- // wait till next completion, do it then.
- // completion irqs can wait up to 1024 msec,
- break;
}
done:
spin_unlock_irqrestore (&ehci->lock, flags);
@@ -983,6 +964,7 @@ rescan:
goto done;
}
+ qh->exception = 1;
if (ehci->rh_state < EHCI_RH_RUNNING)
qh->qh_state = QH_STATE_IDLE;
switch (qh->qh_state) {
@@ -1051,13 +1033,12 @@ ehci_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
usb_settoggle(qh->dev, epnum, is_out, 0);
if (!list_empty(&qh->qtd_list)) {
WARN_ONCE(1, "clear_halt for a busy endpoint\n");
- } else if (qh->qh_state == QH_STATE_LINKED ||
- qh->qh_state == QH_STATE_COMPLETING) {
-
+ } else {
/* The toggle value in the QH can't be updated
* while the QH is active. Unlink it now;
* re-linking will call qh_refresh().
*/
+ qh->exception = 1;
if (eptype == USB_ENDPOINT_XFER_BULK)
start_unlink_async(ehci, qh);
else
@@ -1250,11 +1231,6 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER ehci_hcd_sh_driver
#endif
-#ifdef CONFIG_USB_EHCI_HCD_OMAP
-#include "ehci-omap.c"
-#define PLATFORM_DRIVER ehci_hcd_omap_driver
-#endif
-
#ifdef CONFIG_PPC_PS3
#include "ehci-ps3.c"
#define PS3_SYSTEM_BUS_DRIVER ps3_ehci_driver
@@ -1270,41 +1246,16 @@ MODULE_LICENSE ("GPL");
#define XILINX_OF_PLATFORM_DRIVER ehci_hcd_xilinx_of_driver
#endif
-#ifdef CONFIG_PLAT_ORION
-#include "ehci-orion.c"
-#define PLATFORM_DRIVER ehci_orion_driver
-#endif
-
#ifdef CONFIG_USB_W90X900_EHCI
#include "ehci-w90x900.c"
#define PLATFORM_DRIVER ehci_hcd_w90x900_driver
#endif
-#ifdef CONFIG_ARCH_AT91
-#include "ehci-atmel.c"
-#define PLATFORM_DRIVER ehci_atmel_driver
-#endif
-
#ifdef CONFIG_USB_OCTEON_EHCI
#include "ehci-octeon.c"
#define PLATFORM_DRIVER ehci_octeon_driver
#endif
-#ifdef CONFIG_ARCH_VT8500
-#include "ehci-vt8500.c"
-#define PLATFORM_DRIVER vt8500_ehci_driver
-#endif
-
-#ifdef CONFIG_PLAT_SPEAR
-#include "ehci-spear.c"
-#define PLATFORM_DRIVER spear_ehci_hcd_driver
-#endif
-
-#ifdef CONFIG_USB_EHCI_MSM
-#include "ehci-msm.c"
-#define PLATFORM_DRIVER ehci_msm_driver
-#endif
-
#ifdef CONFIG_TILE_USB
#include "ehci-tilegx.c"
#define PLATFORM_DRIVER ehci_hcd_tilegx_driver
@@ -1320,11 +1271,6 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER tegra_ehci_driver
#endif
-#ifdef CONFIG_USB_EHCI_S5P
-#include "ehci-s5p.c"
-#define PLATFORM_DRIVER s5p_ehci_driver
-#endif
-
#ifdef CONFIG_SPARC_LEON
#include "ehci-grlib.c"
#define PLATFORM_DRIVER ehci_grlib_driver
@@ -1340,17 +1286,6 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER ehci_hcd_sead3_driver
#endif
-#if !IS_ENABLED(CONFIG_USB_EHCI_PCI) && \
- !IS_ENABLED(CONFIG_USB_EHCI_HCD_PLATFORM) && \
- !IS_ENABLED(CONFIG_USB_CHIPIDEA_HOST) && \
- !IS_ENABLED(CONFIG_USB_EHCI_MXC) && \
- !defined(PLATFORM_DRIVER) && \
- !defined(PS3_SYSTEM_BUS_DRIVER) && \
- !defined(OF_PLATFORM_DRIVER) && \
- !defined(XILINX_OF_PLATFORM_DRIVER)
-#error "missing bus glue for ehci-hcd"
-#endif
-
static int __init ehci_hcd_init(void)
{
int retval = 0;
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-02 22:19:05 +0000