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Initialize USB ports in parallel to speed-up boot.

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2013-03-19 23:06:44 +01:00
parent d745dda77e
commit f6df57d216
4 changed files with 227 additions and 149 deletions
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16
include/grub/usb.h
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@ -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;