Initialize USB ports in parallel to speed-up boot.
This commit is contained in:
parent
d745dda77e
commit
f6df57d216
4 changed files with 227 additions and 149 deletions
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@ -1,3 +1,7 @@
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2013-03-19 Vladimir Serbinenko <phcoder@gmail.com>
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Initialize USB ports in parallel to speed-up boot.
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2013-03-19 Vladimir Serbinenko <phcoder@gmail.com>
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Fix USB devices not being detected when requested
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@ -26,46 +26,8 @@
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GRUB_MOD_LICENSE ("GPLv3+");
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static grub_usb_controller_dev_t grub_usb_list;
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static struct grub_usb_attach_desc *attach_hooks;
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/* Iterate over all controllers found by the driver. */
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static int
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grub_usb_controller_dev_register_iter (grub_usb_controller_t dev, void *data)
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{
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grub_usb_controller_dev_t usb = data;
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dev->dev = usb;
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/* Enable the ports of the USB Root Hub. */
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grub_usb_root_hub (dev);
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return 0;
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}
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void
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grub_usb_controller_dev_register (grub_usb_controller_dev_t usb)
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{
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usb->next = grub_usb_list;
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grub_usb_list = usb;
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if (usb->iterate)
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usb->iterate (grub_usb_controller_dev_register_iter, usb);
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}
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void
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grub_usb_controller_dev_unregister (grub_usb_controller_dev_t usb)
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{
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grub_usb_controller_dev_t *p, q;
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for (p = &grub_usb_list, q = *p; q; p = &(q->next), q = q->next)
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if (q == usb)
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{
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*p = q->next;
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break;
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}
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}
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#if 0
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/* Context for grub_usb_controller_iterate. */
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struct grub_usb_controller_iterate_ctx
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@ -41,6 +41,7 @@ struct grub_usb_hub
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};
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static struct grub_usb_hub *hubs;
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static grub_usb_controller_dev_t grub_usb_list;
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/* Add a device that currently has device number 0 and resides on
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CONTROLLER, the Hub reported that the device speed is SPEED. */
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@ -146,10 +147,15 @@ grub_usb_add_hub (grub_usb_device_t dev)
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grub_dprintf ("usb", "Hub set configuration\n");
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grub_usb_set_configuration (dev, 1);
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dev->children = grub_zalloc (hubdesc.portcnt * sizeof (dev->children[0]));
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if (!dev->children)
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return GRUB_USB_ERR_INTERNAL;
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dev->nports = hubdesc.portcnt;
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dev->children = grub_zalloc (hubdesc.portcnt * sizeof (dev->children[0]));
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dev->ports = grub_zalloc (dev->nports * sizeof (dev->ports[0]));
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if (!dev->children || !dev->ports)
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{
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grub_free (dev->children);
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grub_free (dev->ports);
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return GRUB_USB_ERR_INTERNAL;
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}
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/* Power on all Hub ports. */
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for (i = 1; i <= hubdesc.portcnt; i++)
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@ -197,46 +203,6 @@ attach_root_port (struct grub_usb_hub *hub, int portno,
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{
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grub_usb_device_t dev;
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grub_err_t err;
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int total, i;
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grub_usb_speed_t current_speed = GRUB_USB_SPEED_NONE;
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int changed=0;
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grub_boot_time ("detect_dev USB root portno=%d\n", portno);
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#if 0
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/* Specification does not say about disabling of port when device
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* connected. If disabling is really necessary for some devices,
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* delete this #if 0 and related #endif */
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/* Disable the port. XXX: Why? */
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err = hub->controller->dev->portstatus (hub->controller, portno, 0);
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if (err)
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return;
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#endif
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grub_boot_time ("Before the stable power wait portno=%d", portno);
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/* Wait for completion of insertion and stable power (USB spec.)
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* Should be at least 100ms, some devices requires more...
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* There is also another thing - some devices have worse contacts
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* and connected signal is unstable for some time - we should handle
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* it - but prevent deadlock in case when device is too faulty... */
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for (total = i = 0; (i < 250) && (total < 2000); i++, total++)
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{
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grub_millisleep (1);
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current_speed = hub->controller->dev->detect_dev
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(hub->controller, portno, &changed);
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if (current_speed == GRUB_USB_SPEED_NONE)
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i = 0;
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}
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grub_boot_time ("After the stable power wait portno=%d", portno);
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grub_dprintf ("usb", "total=%d\n", total);
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if (total >= 2000)
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{
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grub_boot_time ("Root port timeout");
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return;
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}
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grub_boot_time ("After detect_dev");
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@ -267,12 +233,14 @@ attach_root_port (struct grub_usb_hub *hub, int portno,
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grub_boot_time ("Attached root port");
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}
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grub_usb_err_t
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grub_usb_root_hub (grub_usb_controller_t controller)
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/* Iterate over all controllers found by the driver. */
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static int
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grub_usb_controller_dev_register_iter (grub_usb_controller_t controller, void *data)
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{
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int i;
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grub_usb_controller_dev_t usb = data;
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struct grub_usb_hub *hub;
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int changed=0;
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controller->dev = usb;
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grub_boot_time ("Registering USB root hub");
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@ -295,29 +263,118 @@ grub_usb_root_hub (grub_usb_controller_t controller)
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/* Query the number of ports the root Hub has. */
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hub->nports = controller->dev->hubports (controller);
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hub->devices = grub_zalloc (sizeof (hub->devices[0]) * hub->nports);
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if (!hub->devices)
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usb->ports = grub_zalloc (sizeof (usb->ports[0]) * hub->nports);
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if (!hub->devices || !usb->ports)
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{
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grub_free (hub->devices);
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grub_free (usb->ports);
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grub_free (hub->controller);
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grub_free (hub);
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return GRUB_USB_ERR_INTERNAL;
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grub_print_error ();
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return 0;
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}
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for (i = 0; i < hub->nports; i++)
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return 0;
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}
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void
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grub_usb_controller_dev_unregister (grub_usb_controller_dev_t usb)
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{
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grub_usb_controller_dev_t *p, q;
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for (p = &grub_usb_list, q = *p; q; p = &(q->next), q = q->next)
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if (q == usb)
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{
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*p = q->next;
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break;
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}
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}
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void
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grub_usb_controller_dev_register (grub_usb_controller_dev_t usb)
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{
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int portno;
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int continue_waiting = 0;
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struct grub_usb_hub *hub;
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usb->next = grub_usb_list;
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grub_usb_list = usb;
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if (usb->iterate)
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usb->iterate (grub_usb_controller_dev_register_iter, usb);
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grub_boot_time ("waiting for stable power on USB root\n");
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while (1)
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{
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for (hub = hubs; hub; hub = hub->next)
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if (hub->controller->dev == usb)
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{
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/* Wait for completion of insertion and stable power (USB spec.)
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* Should be at least 100ms, some devices requires more...
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* There is also another thing - some devices have worse contacts
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* and connected signal is unstable for some time - we should handle
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* it - but prevent deadlock in case when device is too faulty... */
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for (portno = 0; portno < hub->nports; portno++)
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{
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grub_usb_speed_t speed;
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if (!controller->dev->pending_reset)
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{
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speed = controller->dev->detect_dev (hub->controller, i,
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int changed = 0;
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speed = hub->controller->dev->detect_dev (hub->controller, portno,
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&changed);
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if (speed != GRUB_USB_SPEED_NONE)
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attach_root_port (hub, i, speed);
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if (usb->ports[portno].state == PORT_STATE_NORMAL
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&& speed != GRUB_USB_SPEED_NONE)
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{
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usb->ports[portno].soft_limit_time = grub_get_time_ms () + 250;
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usb->ports[portno].hard_limit_time = usb->ports[portno].soft_limit_time + 1750;
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usb->ports[portno].state = PORT_STATE_WAITING_FOR_STABLE_POWER;
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continue_waiting++;
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continue;
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}
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if (usb->ports[portno].state == PORT_STATE_WAITING_FOR_STABLE_POWER
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&& speed == GRUB_USB_SPEED_NONE)
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{
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usb->ports[portno].soft_limit_time = grub_get_time_ms () + 250;
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continue;
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}
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if (usb->ports[portno].state == PORT_STATE_WAITING_FOR_STABLE_POWER
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&& grub_get_time_ms () > usb->ports[portno].soft_limit_time)
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{
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usb->ports[portno].state = PORT_STATE_STABLE_POWER;
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continue_waiting--;
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continue;
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}
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if (usb->ports[portno].state == PORT_STATE_WAITING_FOR_STABLE_POWER
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&& grub_get_time_ms () > usb->ports[portno].hard_limit_time)
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{
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usb->ports[portno].state = PORT_STATE_FAILED_DEVICE;
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continue_waiting--;
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continue;
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}
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}
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}
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if (!continue_waiting)
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break;
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grub_millisleep (1);
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}
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grub_boot_time ("After the stable power wait on USB root");
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for (hub = hubs; hub; hub = hub->next)
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if (hub->controller->dev == usb)
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for (portno = 0; portno < hub->nports; portno++)
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if (usb->ports[portno].state == PORT_STATE_STABLE_POWER)
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{
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grub_usb_speed_t speed;
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int changed = 0;
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usb->ports[portno].state = PORT_STATE_NORMAL;
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speed = hub->controller->dev->detect_dev (hub->controller, portno, &changed);
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attach_root_port (hub, portno, speed);
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}
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grub_boot_time ("USB root hub registered");
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return GRUB_USB_ERR_NONE;
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}
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static void detach_device (grub_usb_device_t dev);
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@ -349,6 +406,71 @@ detach_device (grub_usb_device_t dev)
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grub_usb_devs[dev->addr] = 0;
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}
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static int
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wait_power_nonroot_hub (grub_usb_device_t dev)
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{
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grub_usb_err_t err;
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int continue_waiting = 0;
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unsigned i;
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for (i = 1; i <= dev->nports; i++)
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if (dev->ports[i - 1].state == PORT_STATE_WAITING_FOR_STABLE_POWER)
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{
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grub_uint64_t tm;
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grub_uint32_t current_status = 0;
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/* Get the port status. */
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err = grub_usb_control_msg (dev, (GRUB_USB_REQTYPE_IN
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| GRUB_USB_REQTYPE_CLASS
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| GRUB_USB_REQTYPE_TARGET_OTHER),
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GRUB_USB_REQ_GET_STATUS,
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0, i,
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sizeof (current_status),
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(char *) ¤t_status);
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if (err)
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{
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dev->ports[i - 1].state = PORT_STATE_FAILED_DEVICE;
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continue;
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}
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tm = grub_get_time_ms ();
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if (!(current_status & GRUB_USB_HUB_STATUS_PORT_CONNECTED))
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dev->ports[i - 1].soft_limit_time = tm + 250;
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if (tm >= dev->ports[i - 1].soft_limit_time)
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{
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if (dev->controller.dev->pending_reset)
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continue;
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/* Now do reset of port. */
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grub_usb_control_msg (dev, (GRUB_USB_REQTYPE_OUT
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| GRUB_USB_REQTYPE_CLASS
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| GRUB_USB_REQTYPE_TARGET_OTHER),
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GRUB_USB_REQ_SET_FEATURE,
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GRUB_USB_HUB_FEATURE_PORT_RESET,
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i, 0, 0);
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dev->ports[i - 1].state = PORT_STATE_NORMAL;
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grub_boot_time ("Resetting port %d", i);
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rescan = 1;
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/* We cannot reset more than one device at the same time !
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* Resetting more devices together results in very bad
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* situation: more than one device has default address 0
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* at the same time !!!
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* Additionaly, we cannot perform another reset
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* anywhere on the same OHCI controller until
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* we will finish addressing of reseted device ! */
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dev->controller.dev->pending_reset = grub_get_time_ms () + 5000;
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npending++;
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continue;
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}
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if (tm >= dev->ports[i - 1].hard_limit_time)
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{
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dev->ports[i - 1].state = PORT_STATE_FAILED_DEVICE;
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continue;
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}
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continue_waiting = 1;
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}
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return continue_waiting && dev->controller.dev->pending_reset == 0;
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}
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static void
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poll_nonroot_hub (grub_usb_device_t dev)
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{
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@ -356,7 +478,6 @@ poll_nonroot_hub (grub_usb_device_t dev)
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unsigned i;
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grub_uint8_t changed;
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grub_size_t actual, len;
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int j, total;
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if (!dev->hub_transfer)
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return;
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@ -382,9 +503,9 @@ poll_nonroot_hub (grub_usb_device_t dev)
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for (i = 1; i <= dev->nports; i++)
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{
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grub_uint32_t status;
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grub_uint32_t current_status = 0;
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if (!(changed & (1 << i)))
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if (!(changed & (1 << i))
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|| dev->ports[i - 1].state == PORT_STATE_WAITING_FOR_STABLE_POWER)
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continue;
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/* Get the port status. */
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@ -444,52 +565,10 @@ poll_nonroot_hub (grub_usb_device_t dev)
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* There is also another thing - some devices have worse contacts
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* and connected signal is unstable for some time - we should handle
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* it - but prevent deadlock in case when device is too faulty... */
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for (total = j = 0; (j < 250) && (total < 2000); j++, total++)
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{
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grub_millisleep (1);
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/* Get the port status. */
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err = grub_usb_control_msg (dev, (GRUB_USB_REQTYPE_IN
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| GRUB_USB_REQTYPE_CLASS
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| GRUB_USB_REQTYPE_TARGET_OTHER),
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GRUB_USB_REQ_GET_STATUS,
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0, i,
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sizeof (current_status),
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(char *) ¤t_status);
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if (err)
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{
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total = 2000;
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break;
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}
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if (!(current_status & GRUB_USB_HUB_STATUS_PORT_CONNECTED))
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j = 0;
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}
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grub_boot_time ("After the stable power wait portno=%d", i);
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grub_dprintf ("usb", "(non-root) total=%d\n", total);
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if (total >= 2000)
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dev->ports[i - 1].soft_limit_time = grub_get_time_ms () + 250;
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dev->ports[i - 1].hard_limit_time = dev->ports[i - 1].soft_limit_time + 1750;
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dev->ports[i - 1].state = PORT_STATE_WAITING_FOR_STABLE_POWER;
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continue;
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/* Now do reset of port. */
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grub_usb_control_msg (dev, (GRUB_USB_REQTYPE_OUT
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| GRUB_USB_REQTYPE_CLASS
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| GRUB_USB_REQTYPE_TARGET_OTHER),
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GRUB_USB_REQ_SET_FEATURE,
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GRUB_USB_HUB_FEATURE_PORT_RESET,
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i, 0, 0);
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grub_boot_time ("Resetting port %d", i);
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rescan = 1;
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/* We cannot reset more than one device at the same time !
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* Resetting more devices together results in very bad
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* situation: more than one device has default address 0
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* at the same time !!!
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* Additionaly, we cannot perform another reset
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* anywhere on the same OHCI controller until
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* we will finish addressing of reseted device ! */
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dev->controller.dev->pending_reset = grub_get_time_ms () + 5000;
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npending++;
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return;
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}
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}
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@ -580,6 +659,8 @@ grub_usb_poll_devices (int wait_for_completion)
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}
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}
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grub_boot_time ("Probing USB device driver");
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while (1)
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{
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rescan = 0;
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@ -592,11 +673,26 @@ grub_usb_poll_devices (int wait_for_completion)
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if (dev && dev->descdev.class == 0x09)
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poll_nonroot_hub (dev);
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}
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if (!(rescan || (npending && wait_for_completion)))
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while (1)
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{
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int continue_waiting = 0;
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for (i = 0; i < GRUB_USBHUB_MAX_DEVICES; i++)
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{
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grub_usb_device_t dev = grub_usb_devs[i];
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if (dev && dev->descdev.class == 0x09)
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continue_waiting = continue_waiting || wait_power_nonroot_hub (dev);
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}
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if (!continue_waiting)
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break;
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grub_millisleep (50);
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grub_millisleep (1);
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}
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if (!(rescan || (npending && wait_for_completion)))
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break;
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grub_millisleep (25);
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}
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}
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int
|
||||
|
|
|
@ -121,6 +121,8 @@ struct grub_usb_controller_dev
|
|||
|
||||
grub_usb_speed_t (*detect_dev) (grub_usb_controller_t dev, int port, int *changed);
|
||||
|
||||
struct grub_usb_hub_port *ports;
|
||||
|
||||
/* Per controller flag - port reset pending, don't do another reset */
|
||||
grub_uint64_t pending_reset;
|
||||
|
||||
|
@ -170,6 +172,18 @@ struct grub_usb_configuration
|
|||
struct grub_usb_interface interf[32];
|
||||
};
|
||||
|
||||
struct grub_usb_hub_port
|
||||
{
|
||||
grub_uint64_t soft_limit_time;
|
||||
grub_uint64_t hard_limit_time;
|
||||
enum {
|
||||
PORT_STATE_NORMAL = 0,
|
||||
PORT_STATE_WAITING_FOR_STABLE_POWER = 1,
|
||||
PORT_STATE_FAILED_DEVICE = 2,
|
||||
PORT_STATE_STABLE_POWER = 3,
|
||||
} state;
|
||||
};
|
||||
|
||||
struct grub_usb_device
|
||||
{
|
||||
/* The device descriptor of this device. */
|
||||
|
@ -204,6 +218,8 @@ struct grub_usb_device
|
|||
/* Number of hub ports. */
|
||||
unsigned nports;
|
||||
|
||||
struct grub_usb_hub_port *ports;
|
||||
|
||||
grub_usb_transfer_t hub_transfer;
|
||||
|
||||
grub_uint32_t statuschange;
|
||||
|
|
Loading…
Reference in a new issue