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7d7aa2fd92
This change makes the names of Broadcom targets consistent by using the common notation based on SoC/CPU ID (which is used internally anyway), bcmXXXX instead of brcmXXXX. This is even used for target TITLE in make menuconfig already, only the short target name used brcm so far. Despite, since subtargets range from bcm2708 to bcm2711, it seems appropriate to use bcm27xx instead of bcm2708 (again, as already done for BOARDNAME). This also renames the packages brcm2708-userland and brcm2708-gpu-fw. Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de> Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>
130 lines
4.1 KiB
Diff
130 lines
4.1 KiB
Diff
From 903af89ac9a9b82b6e736ab04e3848672a0ab364 Mon Sep 17 00:00:00 2001
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From: Jonathan Bell <jonathan@raspberrypi.org>
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Date: Tue, 11 Jun 2019 11:33:39 +0100
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Subject: [PATCH] xhci: implement xhci_fixup_endpoint for interval
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adjustments
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Must be called in a non-atomic context, after the endpoint
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has been registered with the hardware via xhci_add_endpoint
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and before the first URB is submitted for the endpoint.
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Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org>
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---
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drivers/usb/host/xhci.c | 98 +++++++++++++++++++++++++++++++++++++++++
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1 file changed, 98 insertions(+)
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--- a/drivers/usb/host/xhci.c
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+++ b/drivers/usb/host/xhci.c
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@@ -1425,6 +1425,103 @@ command_cleanup:
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}
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/*
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+ * RPI: Fixup endpoint intervals when requested
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+ * - Check interval versus the (cached) endpoint context
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+ * - set the endpoint interval to the new value
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+ * - force an endpoint configure command
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+ * XXX: bandwidth is not recalculated. We should probably do that.
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+ */
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+static void xhci_fixup_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
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+ struct usb_host_endpoint *ep, int interval)
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+{
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+ struct xhci_hcd *xhci;
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+ struct xhci_ep_ctx *ep_ctx_out, *ep_ctx_in;
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+ struct xhci_command *command;
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+ struct xhci_input_control_ctx *ctrl_ctx;
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+ struct xhci_virt_device *vdev;
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+ int xhci_interval;
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+ int ret;
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+ int ep_index;
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+ unsigned long flags;
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+ u32 ep_info_tmp;
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+
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+ xhci = hcd_to_xhci(hcd);
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+ ep_index = xhci_get_endpoint_index(&ep->desc);
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+
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+ /* FS/LS interval translations */
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+ if ((udev->speed == USB_SPEED_FULL ||
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+ udev->speed == USB_SPEED_LOW))
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+ interval *= 8;
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+
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+ mutex_lock(&xhci->mutex);
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+
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+ spin_lock_irqsave(&xhci->lock, flags);
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+
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+ vdev = xhci->devs[udev->slot_id];
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+ /* Get context-derived endpoint interval */
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+ ep_ctx_out = xhci_get_ep_ctx(xhci, vdev->out_ctx, ep_index);
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+ ep_ctx_in = xhci_get_ep_ctx(xhci, vdev->in_ctx, ep_index);
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+ xhci_interval = EP_INTERVAL_TO_UFRAMES(le32_to_cpu(ep_ctx_out->ep_info));
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+
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+ if (interval == xhci_interval) {
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+ spin_unlock_irqrestore(&xhci->lock, flags);
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+ mutex_unlock(&xhci->mutex);
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+ return;
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+ }
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+
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+ xhci_dbg(xhci, "Fixup interval=%d xhci_interval=%d\n",
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+ interval, xhci_interval);
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+ command = xhci_alloc_command_with_ctx(xhci, true, GFP_ATOMIC);
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+ if (!command) {
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+ /* Failure here is benign, poll at the original rate */
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+ spin_unlock_irqrestore(&xhci->lock, flags);
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+ mutex_unlock(&xhci->mutex);
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+ return;
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+ }
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+
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+ /* xHCI uses exponents for intervals... */
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+ xhci_interval = fls(interval) - 1;
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+ xhci_interval = clamp_val(xhci_interval, 3, 10);
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+ ep_info_tmp = le32_to_cpu(ep_ctx_out->ep_info);
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+ ep_info_tmp &= ~EP_INTERVAL(255);
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+ ep_info_tmp |= EP_INTERVAL(xhci_interval);
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+
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+ /* Keep the endpoint context up-to-date while issuing the command. */
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+ xhci_endpoint_copy(xhci, vdev->in_ctx,
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+ vdev->out_ctx, ep_index);
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+ ep_ctx_in->ep_info = cpu_to_le32(ep_info_tmp);
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+
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+ /*
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+ * We need to drop the lock, so take an explicit copy
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+ * of the ep context.
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+ */
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+ xhci_endpoint_copy(xhci, command->in_ctx, vdev->in_ctx, ep_index);
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+
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+ ctrl_ctx = xhci_get_input_control_ctx(command->in_ctx);
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+ if (!ctrl_ctx) {
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+ xhci_warn(xhci,
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+ "%s: Could not get input context, bad type.\n",
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+ __func__);
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+ spin_unlock_irqrestore(&xhci->lock, flags);
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+ xhci_free_command(xhci, command);
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+ mutex_unlock(&xhci->mutex);
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+ return;
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+ }
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+ ctrl_ctx->add_flags = xhci_get_endpoint_flag_from_index(ep_index);
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+ ctrl_ctx->drop_flags = 0;
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+
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+ spin_unlock_irqrestore(&xhci->lock, flags);
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+
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+ ret = xhci_configure_endpoint(xhci, udev, command,
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+ false, false);
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+ if (ret)
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+ xhci_warn(xhci, "%s: Configure endpoint failed: %d\n",
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+ __func__, ret);
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+ xhci_free_command(xhci, command);
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+ mutex_unlock(&xhci->mutex);
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+}
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+
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+/*
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* non-error returns are a promise to giveback() the urb later
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* we drop ownership so next owner (or urb unlink) can get it
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*/
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@@ -5217,6 +5314,7 @@ static const struct hc_driver xhci_hc_dr
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.endpoint_reset = xhci_endpoint_reset,
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.check_bandwidth = xhci_check_bandwidth,
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.reset_bandwidth = xhci_reset_bandwidth,
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+ .fixup_endpoint = xhci_fixup_endpoint,
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.address_device = xhci_address_device,
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.enable_device = xhci_enable_device,
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.update_hub_device = xhci_update_hub_device,
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