+// SPDX-License-Identifier: GPL-2.0+
/*
* Most of this source has been derived from the Linux USB
* project:
*
* Adapted for U-Boot:
* (C) Copyright 2001 Denis Peter, MPL AG Switzerland
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
/****************************************************************************
#include <common.h>
#include <command.h>
#include <dm.h>
+#include <env.h>
#include <errno.h>
+#include <log.h>
+#include <malloc.h>
#include <memalign.h>
#include <asm/processor.h>
#include <asm/unaligned.h>
#include <linux/ctype.h>
+#include <linux/delay.h>
#include <linux/list.h>
#include <asm/byteorder.h>
#ifdef CONFIG_SANDBOX
#endif
#include <asm/unaligned.h>
-DECLARE_GLOBAL_DATA_PTR;
-
#include <usb.h>
#define USB_BUFSIZ 512
#define HUB_SHORT_RESET_TIME 20
#define HUB_LONG_RESET_TIME 200
+#define HUB_DEBOUNCE_TIMEOUT CONFIG_USB_HUB_DEBOUNCE_TIMEOUT
+
#define PORT_OVERCURRENT_MAX_SCAN_COUNT 3
struct usb_device_scan {
static LIST_HEAD(usb_scan_list);
-__weak void usb_hub_reset_devices(int port)
+__weak void usb_hub_reset_devices(struct usb_hub_device *hub, int port)
{
return;
}
return hdev->descriptor.bDeviceProtocol == 3;
}
+#if CONFIG_IS_ENABLED(DM_USB)
+bool usb_hub_is_root_hub(struct udevice *hub)
+{
+ if (device_get_uclass_id(hub->parent) != UCLASS_USB_HUB)
+ return true;
+
+ return false;
+}
+
+static int usb_set_hub_depth(struct usb_device *dev, int depth)
+{
+ if (depth < 0 || depth > 4)
+ return -EINVAL;
+
+ return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+ USB_REQ_SET_HUB_DEPTH, USB_DIR_OUT | USB_RT_HUB,
+ depth, 0, NULL, 0, USB_CNTL_TIMEOUT);
+}
+#endif
+
static int usb_get_hub_descriptor(struct usb_device *dev, void *data, int size)
{
unsigned short dtype = USB_DT_HUB;
int usb_get_port_status(struct usb_device *dev, int port, void *data)
{
- return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+ int ret;
+
+ ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_PORT, 0, port,
data, sizeof(struct usb_port_status), USB_CNTL_TIMEOUT);
+
+#if CONFIG_IS_ENABLED(DM_USB)
+ if (ret < 0)
+ return ret;
+
+ /*
+ * Translate the USB 3.0 hub port status field into the old version
+ * that U-Boot understands. Do this only when the hub is not root hub.
+ * For root hub, the port status field has already been translated
+ * in the host controller driver (see xhci_submit_root() in xhci.c).
+ *
+ * Note: this only supports driver model.
+ */
+
+ if (!usb_hub_is_root_hub(dev->dev) && usb_hub_is_superspeed(dev)) {
+ struct usb_port_status *status = (struct usb_port_status *)data;
+ u16 tmp = le16_to_cpu(status->wPortStatus) &
+ USB_SS_PORT_STAT_MASK;
+
+ if (status->wPortStatus & USB_SS_PORT_STAT_POWER)
+ tmp |= USB_PORT_STAT_POWER;
+ if ((status->wPortStatus & USB_SS_PORT_STAT_SPEED) ==
+ USB_SS_PORT_STAT_SPEED_5GBPS)
+ tmp |= USB_PORT_STAT_SUPER_SPEED;
+
+ status->wPortStatus = cpu_to_le16(tmp);
+ }
+#endif
+
+ return ret;
}
int i;
struct usb_device *dev;
unsigned pgood_delay = hub->desc.bPwrOn2PwrGood * 2;
- const char *env;
+ const char __maybe_unused *env;
dev = hub->pusb_dev;
* but allow this time to be increased via env variable as some
* devices break the spec and require longer warm-up times
*/
- env = getenv("usb_pgood_delay");
+#if CONFIG_IS_ENABLED(ENV_SUPPORT)
+ env = env_get("usb_pgood_delay");
if (env)
pgood_delay = max(pgood_delay,
(unsigned)simple_strtol(env, NULL, 0));
+#endif
debug("pgood_delay=%dms\n", pgood_delay);
/*
* will be done based on this value in the USB port loop in
* usb_hub_configure() later.
*/
- hub->connect_timeout = hub->query_delay + 1000;
+ hub->connect_timeout = hub->query_delay + HUB_DEBOUNCE_TIMEOUT;
debug("devnum=%d poweron: query_delay=%d connect_timeout=%d\n",
dev->devnum, max(100, (int)pgood_delay),
- max(100, (int)pgood_delay) + 1000);
+ max(100, (int)pgood_delay) + HUB_DEBOUNCE_TIMEOUT);
}
-#ifndef CONFIG_DM_USB
+#if !CONFIG_IS_ENABLED(DM_USB)
static struct usb_hub_device hub_dev[USB_MAX_HUB];
static int usb_hub_index;
#define MAX_TRIES 5
-static inline char *portspeed(int portstatus)
+static inline const char *portspeed(int portstatus)
{
- char *speed_str;
-
switch (portstatus & USB_PORT_STAT_SPEED_MASK) {
case USB_PORT_STAT_SUPER_SPEED:
- speed_str = "5 Gb/s";
- break;
+ return "5 Gb/s";
case USB_PORT_STAT_HIGH_SPEED:
- speed_str = "480 Mb/s";
- break;
+ return "480 Mb/s";
case USB_PORT_STAT_LOW_SPEED:
- speed_str = "1.5 Mb/s";
- break;
+ return "1.5 Mb/s";
default:
- speed_str = "12 Mb/s";
- break;
+ return "12 Mb/s";
}
-
- return speed_str;
}
/**
unsigned short portstatus, portchange;
int delay = HUB_SHORT_RESET_TIME; /* start with short reset delay */
-#ifdef CONFIG_DM_USB
+#if CONFIG_IS_ENABLED(DM_USB)
debug("%s: resetting '%s' port %d...\n", __func__, dev->dev->name,
port + 1);
#else
break;
}
-#ifdef CONFIG_DM_USB
+#if CONFIG_IS_ENABLED(DM_USB)
struct udevice *child;
ret = usb_scan_device(dev->dev, port + 1, speed, &child);
return 0;
}
+ if (portchange & USB_PORT_STAT_C_RESET) {
+ debug("port %d reset change\n", i + 1);
+ usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_RESET);
+ }
+
+ if ((portchange & USB_SS_PORT_STAT_C_BH_RESET) &&
+ usb_hub_is_superspeed(dev)) {
+ debug("port %d BH reset change\n", i + 1);
+ usb_clear_port_feature(dev, i + 1, USB_SS_PORT_FEAT_C_BH_RESET);
+ }
+
/* A new USB device is ready at this point */
debug("devnum=%d port=%d: USB dev found\n", dev->devnum, i + 1);
if (portchange & USB_PORT_STAT_C_ENABLE) {
debug("port %d enable change, status %x\n", i + 1, portstatus);
usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_ENABLE);
- /*
- * The following hack causes a ghost device problem
- * to Faraday EHCI
- */
-#ifndef CONFIG_USB_EHCI_FARADAY
/*
* EM interference sometimes causes bad shielded USB
* devices to be shutdown by the hub, this hack enables
i + 1);
usb_hub_port_connect_change(dev, i);
}
-#endif
}
if (portstatus & USB_PORT_STAT_SUSPEND) {
hub->overcurrent_count[i]);
}
- if (portchange & USB_PORT_STAT_C_RESET) {
- debug("port %d reset change\n", i + 1);
- usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_RESET);
- }
-
/*
* We're done with this device, so let's remove this device from
* scanning list
{
struct usb_hub_device *hub;
-#ifndef CONFIG_DM_USB
+#if !CONFIG_IS_ENABLED(DM_USB)
/* "allocate" Hub device */
hub = usb_hub_allocate();
#else
short hubCharacteristics;
struct usb_hub_descriptor *descriptor;
struct usb_hub_device *hub;
- __maybe_unused struct usb_hub_status *hubsts;
+ struct usb_hub_status *hubsts;
int ret;
hub = usb_get_hub_device(dev);
break;
}
+ switch (dev->descriptor.bDeviceProtocol) {
+ case USB_HUB_PR_FS:
+ break;
+ case USB_HUB_PR_HS_SINGLE_TT:
+ debug("Single TT\n");
+ break;
+ case USB_HUB_PR_HS_MULTI_TT:
+ ret = usb_set_interface(dev, 0, 1);
+ if (ret == 0) {
+ debug("TT per port\n");
+ hub->tt.multi = true;
+ } else {
+ debug("Using single TT (err %d)\n", ret);
+ }
+ break;
+ case USB_HUB_PR_SS:
+ /* USB 3.0 hubs don't have a TT */
+ break;
+ default:
+ debug("Unrecognized hub protocol %d\n",
+ dev->descriptor.bDeviceProtocol);
+ break;
+ }
+
+ /* Note 8 FS bit times == (8 bits / 12000000 bps) ~= 666ns */
+ switch (hubCharacteristics & HUB_CHAR_TTTT) {
+ case HUB_TTTT_8_BITS:
+ if (dev->descriptor.bDeviceProtocol != 0) {
+ hub->tt.think_time = 666;
+ debug("TT requires at most %d FS bit times (%d ns)\n",
+ 8, hub->tt.think_time);
+ }
+ break;
+ case HUB_TTTT_16_BITS:
+ hub->tt.think_time = 666 * 2;
+ debug("TT requires at most %d FS bit times (%d ns)\n",
+ 16, hub->tt.think_time);
+ break;
+ case HUB_TTTT_24_BITS:
+ hub->tt.think_time = 666 * 3;
+ debug("TT requires at most %d FS bit times (%d ns)\n",
+ 24, hub->tt.think_time);
+ break;
+ case HUB_TTTT_32_BITS:
+ hub->tt.think_time = 666 * 4;
+ debug("TT requires at most %d FS bit times (%d ns)\n",
+ 32, hub->tt.think_time);
+ break;
+ }
+
debug("power on to power good time: %dms\n",
descriptor->bPwrOn2PwrGood * 2);
debug("hub controller current requirement: %dmA\n",
return ret;
}
-#ifdef DEBUG
hubsts = (struct usb_hub_status *)buffer;
-#endif
debug("get_hub_status returned status %X, change %X\n",
le16_to_cpu(hubsts->wHubStatus),
debug("%sover-current condition exists\n",
(le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_OVERCURRENT) ? \
"" : "no ");
+
+#if CONFIG_IS_ENABLED(DM_USB)
+ /*
+ * Update USB host controller's internal representation of this hub
+ * after the hub descriptor is fetched.
+ */
+ ret = usb_update_hub_device(dev);
+ if (ret < 0 && ret != -ENOSYS) {
+ debug("%s: failed to update hub device for HCD (%x)\n",
+ __func__, ret);
+ return ret;
+ }
+
+ /*
+ * A maximum of seven tiers are allowed in a USB topology, and the
+ * root hub occupies the first tier. The last tier ends with a normal
+ * USB device. USB 3.0 hubs use a 20-bit field called 'route string'
+ * to route packets to the designated downstream port. The hub uses a
+ * hub depth value multiplied by four as an offset into the 'route
+ * string' to locate the bits it uses to determine the downstream
+ * port number.
+ */
+ if (usb_hub_is_root_hub(dev->dev)) {
+ hub->hub_depth = -1;
+ } else {
+ struct udevice *hdev;
+ int depth = 0;
+
+ hdev = dev->dev->parent;
+ while (!usb_hub_is_root_hub(hdev)) {
+ depth++;
+ hdev = hdev->parent;
+ }
+
+ hub->hub_depth = depth;
+
+ if (usb_hub_is_superspeed(dev)) {
+ debug("set hub (%p) depth to %d\n", dev, depth);
+ /*
+ * This request sets the value that the hub uses to
+ * determine the index into the 'route string index'
+ * for this hub.
+ */
+ ret = usb_set_hub_depth(dev, depth);
+ if (ret < 0) {
+ debug("%s: failed to set hub depth (%lX)\n",
+ __func__, dev->status);
+ return ret;
+ }
+ }
+ }
+#endif
+
usb_hub_power_on(hub);
/*
* should occur in the board file of the device.
*/
for (i = 0; i < dev->maxchild; i++)
- usb_hub_reset_devices(i + 1);
+ usb_hub_reset_devices(hub, i + 1);
/*
* Only add the connected USB devices, including potential hubs,
return ret;
}
-#ifdef CONFIG_DM_USB
+#if CONFIG_IS_ENABLED(DM_USB)
int usb_hub_scan(struct udevice *hub)
{
struct usb_device *udev = dev_get_parent_priv(hub);
.post_bind = dm_scan_fdt_dev,
.post_probe = usb_hub_post_probe,
.child_pre_probe = usb_child_pre_probe,
- .per_child_auto_alloc_size = sizeof(struct usb_device),
- .per_child_platdata_auto_alloc_size = sizeof(struct usb_dev_platdata),
- .per_device_auto_alloc_size = sizeof(struct usb_hub_device),
+ .per_child_auto = sizeof(struct usb_device),
+ .per_child_plat_auto = sizeof(struct usb_dev_plat),
+ .per_device_auto = sizeof(struct usb_hub_device),
};
static const struct usb_device_id hub_id_table[] = {
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