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path: root/drivers/usb/host/xhci.c
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Diffstat (limited to 'drivers/usb/host/xhci.c')
-rw-r--r--drivers/usb/host/xhci.c160
1 files changed, 90 insertions, 70 deletions
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 7436d5f5e67a..b6f21175b872 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -1553,6 +1553,10 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
*/
if (!(ep->ep_state & EP_HALT_PENDING)) {
command = xhci_alloc_command(xhci, false, false, GFP_ATOMIC);
+ if (!command) {
+ ret = -ENOMEM;
+ goto done;
+ }
ep->ep_state |= EP_HALT_PENDING;
ep->stop_cmds_pending++;
ep->stop_cmd_timer.expires = jiffies +
@@ -1586,12 +1590,10 @@ int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
struct xhci_hcd *xhci;
struct xhci_container_ctx *in_ctx, *out_ctx;
struct xhci_input_control_ctx *ctrl_ctx;
- struct xhci_slot_ctx *slot_ctx;
- unsigned int last_ctx;
unsigned int ep_index;
struct xhci_ep_ctx *ep_ctx;
u32 drop_flag;
- u32 new_add_flags, new_drop_flags, new_slot_info;
+ u32 new_add_flags, new_drop_flags;
int ret;
ret = xhci_check_args(hcd, udev, ep, 1, true, __func__);
@@ -1638,24 +1640,13 @@ int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
ctrl_ctx->add_flags &= cpu_to_le32(~drop_flag);
new_add_flags = le32_to_cpu(ctrl_ctx->add_flags);
- last_ctx = xhci_last_valid_endpoint(le32_to_cpu(ctrl_ctx->add_flags));
- slot_ctx = xhci_get_slot_ctx(xhci, in_ctx);
- /* Update the last valid endpoint context, if we deleted the last one */
- if ((le32_to_cpu(slot_ctx->dev_info) & LAST_CTX_MASK) >
- LAST_CTX(last_ctx)) {
- slot_ctx->dev_info &= cpu_to_le32(~LAST_CTX_MASK);
- slot_ctx->dev_info |= cpu_to_le32(LAST_CTX(last_ctx));
- }
- new_slot_info = le32_to_cpu(slot_ctx->dev_info);
-
xhci_endpoint_zero(xhci, xhci->devs[udev->slot_id], ep);
- xhci_dbg(xhci, "drop ep 0x%x, slot id %d, new drop flags = %#x, new add flags = %#x, new slot info = %#x\n",
+ xhci_dbg(xhci, "drop ep 0x%x, slot id %d, new drop flags = %#x, new add flags = %#x\n",
(unsigned int) ep->desc.bEndpointAddress,
udev->slot_id,
(unsigned int) new_drop_flags,
- (unsigned int) new_add_flags,
- (unsigned int) new_slot_info);
+ (unsigned int) new_add_flags);
return 0;
}
@@ -1678,11 +1669,9 @@ int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
struct xhci_hcd *xhci;
struct xhci_container_ctx *in_ctx, *out_ctx;
unsigned int ep_index;
- struct xhci_slot_ctx *slot_ctx;
struct xhci_input_control_ctx *ctrl_ctx;
u32 added_ctxs;
- unsigned int last_ctx;
- u32 new_add_flags, new_drop_flags, new_slot_info;
+ u32 new_add_flags, new_drop_flags;
struct xhci_virt_device *virt_dev;
int ret = 0;
@@ -1697,7 +1686,6 @@ int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
return -ENODEV;
added_ctxs = xhci_get_endpoint_flag(&ep->desc);
- last_ctx = xhci_last_valid_endpoint(added_ctxs);
if (added_ctxs == SLOT_FLAG || added_ctxs == EP0_FLAG) {
/* FIXME when we have to issue an evaluate endpoint command to
* deal with ep0 max packet size changing once we get the
@@ -1763,24 +1751,14 @@ int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
*/
new_drop_flags = le32_to_cpu(ctrl_ctx->drop_flags);
- slot_ctx = xhci_get_slot_ctx(xhci, in_ctx);
- /* Update the last valid endpoint context, if we just added one past */
- if ((le32_to_cpu(slot_ctx->dev_info) & LAST_CTX_MASK) <
- LAST_CTX(last_ctx)) {
- slot_ctx->dev_info &= cpu_to_le32(~LAST_CTX_MASK);
- slot_ctx->dev_info |= cpu_to_le32(LAST_CTX(last_ctx));
- }
- new_slot_info = le32_to_cpu(slot_ctx->dev_info);
-
/* Store the usb_device pointer for later use */
ep->hcpriv = udev;
- xhci_dbg(xhci, "add ep 0x%x, slot id %d, new drop flags = %#x, new add flags = %#x, new slot info = %#x\n",
+ xhci_dbg(xhci, "add ep 0x%x, slot id %d, new drop flags = %#x, new add flags = %#x\n",
(unsigned int) ep->desc.bEndpointAddress,
udev->slot_id,
(unsigned int) new_drop_flags,
- (unsigned int) new_add_flags,
- (unsigned int) new_slot_info);
+ (unsigned int) new_add_flags);
return 0;
}
@@ -1830,15 +1808,15 @@ static int xhci_configure_endpoint_result(struct xhci_hcd *xhci,
ret = -ETIME;
break;
case COMP_ENOMEM:
- dev_warn(&udev->dev, "Not enough host controller resources "
- "for new device state.\n");
+ dev_warn(&udev->dev,
+ "Not enough host controller resources for new device state.\n");
ret = -ENOMEM;
/* FIXME: can we allocate more resources for the HC? */
break;
case COMP_BW_ERR:
case COMP_2ND_BW_ERR:
- dev_warn(&udev->dev, "Not enough bandwidth "
- "for new device state.\n");
+ dev_warn(&udev->dev,
+ "Not enough bandwidth for new device state.\n");
ret = -ENOSPC;
/* FIXME: can we go back to the old state? */
break;
@@ -1850,8 +1828,8 @@ static int xhci_configure_endpoint_result(struct xhci_hcd *xhci,
ret = -EINVAL;
break;
case COMP_DEV_ERR:
- dev_warn(&udev->dev, "ERROR: Incompatible device for endpoint "
- "configure command.\n");
+ dev_warn(&udev->dev,
+ "ERROR: Incompatible device for endpoint configure command.\n");
ret = -ENODEV;
break;
case COMP_SUCCESS:
@@ -1860,8 +1838,8 @@ static int xhci_configure_endpoint_result(struct xhci_hcd *xhci,
ret = 0;
break;
default:
- xhci_err(xhci, "ERROR: unexpected command completion "
- "code 0x%x.\n", *cmd_status);
+ xhci_err(xhci, "ERROR: unexpected command completion code 0x%x.\n",
+ *cmd_status);
ret = -EINVAL;
break;
}
@@ -1881,24 +1859,24 @@ static int xhci_evaluate_context_result(struct xhci_hcd *xhci,
ret = -ETIME;
break;
case COMP_EINVAL:
- dev_warn(&udev->dev, "WARN: xHCI driver setup invalid evaluate "
- "context command.\n");
+ dev_warn(&udev->dev,
+ "WARN: xHCI driver setup invalid evaluate context command.\n");
ret = -EINVAL;
break;
case COMP_EBADSLT:
- dev_warn(&udev->dev, "WARN: slot not enabled for"
- "evaluate context command.\n");
+ dev_warn(&udev->dev,
+ "WARN: slot not enabled for evaluate context command.\n");
ret = -EINVAL;
break;
case COMP_CTX_STATE:
- dev_warn(&udev->dev, "WARN: invalid context state for "
- "evaluate context command.\n");
+ dev_warn(&udev->dev,
+ "WARN: invalid context state for evaluate context command.\n");
xhci_dbg_ctx(xhci, virt_dev->out_ctx, 1);
ret = -EINVAL;
break;
case COMP_DEV_ERR:
- dev_warn(&udev->dev, "ERROR: Incompatible device for evaluate "
- "context command.\n");
+ dev_warn(&udev->dev,
+ "ERROR: Incompatible device for evaluate context command.\n");
ret = -ENODEV;
break;
case COMP_MEL_ERR:
@@ -1912,8 +1890,8 @@ static int xhci_evaluate_context_result(struct xhci_hcd *xhci,
ret = 0;
break;
default:
- xhci_err(xhci, "ERROR: unexpected command completion "
- "code 0x%x.\n", *cmd_status);
+ xhci_err(xhci, "ERROR: unexpected command completion code 0x%x.\n",
+ *cmd_status);
ret = -EINVAL;
break;
}
@@ -2750,8 +2728,19 @@ int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)
ret = 0;
goto command_cleanup;
}
- xhci_dbg(xhci, "New Input Control Context:\n");
+ /* Fix up Context Entries field. Minimum value is EP0 == BIT(1). */
slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->in_ctx);
+ for (i = 31; i >= 1; i--) {
+ __le32 le32 = cpu_to_le32(BIT(i));
+
+ if ((virt_dev->eps[i-1].ring && !(ctrl_ctx->drop_flags & le32))
+ || (ctrl_ctx->add_flags & le32) || i == 1) {
+ slot_ctx->dev_info &= cpu_to_le32(~LAST_CTX_MASK);
+ slot_ctx->dev_info |= cpu_to_le32(LAST_CTX(i));
+ break;
+ }
+ }
+ xhci_dbg(xhci, "New Input Control Context:\n");
xhci_dbg_ctx(xhci, virt_dev->in_ctx,
LAST_CTX_TO_EP_NUM(le32_to_cpu(slot_ctx->dev_info)));
@@ -3163,7 +3152,8 @@ int xhci_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev,
num_streams);
/* MaxPSASize value 0 (2 streams) means streams are not supported */
- if (HCC_MAX_PSA(xhci->hcc_params) < 4) {
+ if ((xhci->quirks & XHCI_BROKEN_STREAMS) ||
+ HCC_MAX_PSA(xhci->hcc_params) < 4) {
xhci_dbg(xhci, "xHCI controller does not support streams.\n");
return -ENOSYS;
}
@@ -4303,8 +4293,7 @@ static u16 xhci_get_timeout_no_hub_lpm(struct usb_device *udev,
return USB3_LPM_DISABLED;
}
-/* Returns the hub-encoded U1 timeout value.
- * The U1 timeout should be the maximum of the following values:
+/* The U1 timeout should be the maximum of the following values:
* - For control endpoints, U1 system exit latency (SEL) * 3
* - For bulk endpoints, U1 SEL * 5
* - For interrupt endpoints:
@@ -4312,7 +4301,8 @@ static u16 xhci_get_timeout_no_hub_lpm(struct usb_device *udev,
* - Periodic EPs, max(105% of bInterval, U1 SEL * 2)
* - For isochronous endpoints, max(105% of bInterval, U1 SEL * 2)
*/
-static u16 xhci_calculate_intel_u1_timeout(struct usb_device *udev,
+static unsigned long long xhci_calculate_intel_u1_timeout(
+ struct usb_device *udev,
struct usb_endpoint_descriptor *desc)
{
unsigned long long timeout_ns;
@@ -4344,11 +4334,28 @@ static u16 xhci_calculate_intel_u1_timeout(struct usb_device *udev,
return 0;
}
- /* The U1 timeout is encoded in 1us intervals. */
- timeout_ns = DIV_ROUND_UP_ULL(timeout_ns, 1000);
- /* Don't return a timeout of zero, because that's USB3_LPM_DISABLED. */
+ return timeout_ns;
+}
+
+/* Returns the hub-encoded U1 timeout value. */
+static u16 xhci_calculate_u1_timeout(struct xhci_hcd *xhci,
+ struct usb_device *udev,
+ struct usb_endpoint_descriptor *desc)
+{
+ unsigned long long timeout_ns;
+
+ if (xhci->quirks & XHCI_INTEL_HOST)
+ timeout_ns = xhci_calculate_intel_u1_timeout(udev, desc);
+ else
+ timeout_ns = udev->u1_params.sel;
+
+ /* The U1 timeout is encoded in 1us intervals.
+ * Don't return a timeout of zero, because that's USB3_LPM_DISABLED.
+ */
if (timeout_ns == USB3_LPM_DISABLED)
- timeout_ns++;
+ timeout_ns = 1;
+ else
+ timeout_ns = DIV_ROUND_UP_ULL(timeout_ns, 1000);
/* If the necessary timeout value is bigger than what we can set in the
* USB 3.0 hub, we have to disable hub-initiated U1.
@@ -4360,14 +4367,14 @@ static u16 xhci_calculate_intel_u1_timeout(struct usb_device *udev,
return xhci_get_timeout_no_hub_lpm(udev, USB3_LPM_U1);
}
-/* Returns the hub-encoded U2 timeout value.
- * The U2 timeout should be the maximum of:
+/* The U2 timeout should be the maximum of:
* - 10 ms (to avoid the bandwidth impact on the scheduler)
* - largest bInterval of any active periodic endpoint (to avoid going
* into lower power link states between intervals).
* - the U2 Exit Latency of the device
*/
-static u16 xhci_calculate_intel_u2_timeout(struct usb_device *udev,
+static unsigned long long xhci_calculate_intel_u2_timeout(
+ struct usb_device *udev,
struct usb_endpoint_descriptor *desc)
{
unsigned long long timeout_ns;
@@ -4383,6 +4390,21 @@ static u16 xhci_calculate_intel_u2_timeout(struct usb_device *udev,
if (u2_del_ns > timeout_ns)
timeout_ns = u2_del_ns;
+ return timeout_ns;
+}
+
+/* Returns the hub-encoded U2 timeout value. */
+static u16 xhci_calculate_u2_timeout(struct xhci_hcd *xhci,
+ struct usb_device *udev,
+ struct usb_endpoint_descriptor *desc)
+{
+ unsigned long long timeout_ns;
+
+ if (xhci->quirks & XHCI_INTEL_HOST)
+ timeout_ns = xhci_calculate_intel_u2_timeout(udev, desc);
+ else
+ timeout_ns = udev->u2_params.sel;
+
/* The U2 timeout is encoded in 256us intervals */
timeout_ns = DIV_ROUND_UP_ULL(timeout_ns, 256 * 1000);
/* If the necessary timeout value is bigger than what we can set in the
@@ -4401,13 +4423,10 @@ static u16 xhci_call_host_update_timeout_for_endpoint(struct xhci_hcd *xhci,
enum usb3_link_state state,
u16 *timeout)
{
- if (state == USB3_LPM_U1) {
- if (xhci->quirks & XHCI_INTEL_HOST)
- return xhci_calculate_intel_u1_timeout(udev, desc);
- } else {
- if (xhci->quirks & XHCI_INTEL_HOST)
- return xhci_calculate_intel_u2_timeout(udev, desc);
- }
+ if (state == USB3_LPM_U1)
+ return xhci_calculate_u1_timeout(xhci, udev, desc);
+ else if (state == USB3_LPM_U2)
+ return xhci_calculate_u2_timeout(xhci, udev, desc);
return USB3_LPM_DISABLED;
}
@@ -4484,7 +4503,8 @@ static int xhci_check_tier_policy(struct xhci_hcd *xhci,
{
if (xhci->quirks & XHCI_INTEL_HOST)
return xhci_check_intel_tier_policy(udev, state);
- return -EINVAL;
+ else
+ return 0;
}
/* Returns the U1 or U2 timeout that should be enabled.
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 05:07:24 +0000