diff options
author | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-05-18 13:18:31 +0300 |
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committer | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-05-18 13:42:15 +0300 |
commit | 437fd90c0250dee670290f9b714253671a990160 (patch) | |
tree | b871786c360704244a07411c69fb58da9ead4a06 /qemu/roms/ipxe/src/drivers/usb/usbkbd.h | |
parent | 5bbd6fe9b8bab2a93e548c5a53b032d1939eec05 (diff) |
These changes are the raw update to qemu-2.6.
Collission happened in the following patches:
migration: do cleanup operation after completion(738df5b9)
Bug fix.(1750c932f86)
kvmclock: add a new function to update env->tsc.(b52baab2)
The code provided by the patches was already in the upstreamed
version.
Change-Id: I3cc11841a6a76ae20887b2e245710199e1ea7f9a
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'qemu/roms/ipxe/src/drivers/usb/usbkbd.h')
-rw-r--r-- | qemu/roms/ipxe/src/drivers/usb/usbkbd.h | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/qemu/roms/ipxe/src/drivers/usb/usbkbd.h b/qemu/roms/ipxe/src/drivers/usb/usbkbd.h new file mode 100644 index 000000000..7eab24e46 --- /dev/null +++ b/qemu/roms/ipxe/src/drivers/usb/usbkbd.h @@ -0,0 +1,154 @@ +#ifndef _USBKBD_H +#define _USBKBD_H + +/** @file + * + * USB keyboard driver + * + */ + +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); + +#include <assert.h> +#include <ipxe/usb.h> +#include <ipxe/usbhid.h> + +/** Keyboard protocol */ +#define USBKBD_PROTOCOL 1 + +/** A USB keyboard report */ +struct usb_keyboard_report { + /** Modifier keys */ + uint8_t modifiers; + /** Reserved */ + uint8_t reserved; + /** Keycodes */ + uint8_t keycode[6]; +} __attribute__ (( packed )); + +/** USB modifier keys */ +enum usb_keyboard_modifier { + /** Left Ctrl key */ + USBKBD_CTRL_LEFT = 0x01, + /** Left Shift key */ + USBKBD_SHIFT_LEFT = 0x02, + /** Left Alt key */ + USBKBD_ALT_LEFT = 0x04, + /** Left GUI key */ + USBKBD_GUI_LEFT = 0x08, + /** Right Ctrl key */ + USBKBD_CTRL_RIGHT = 0x10, + /** Right Shift key */ + USBKBD_SHIFT_RIGHT = 0x20, + /** Right Alt key */ + USBKBD_ALT_RIGHT = 0x40, + /** Right GUI key */ + USBKBD_GUI_RIGHT = 0x80, +}; + +/** Either Ctrl key */ +#define USBKBD_CTRL ( USBKBD_CTRL_LEFT | USBKBD_CTRL_RIGHT ) + +/** Either Shift key */ +#define USBKBD_SHIFT ( USBKBD_SHIFT_LEFT | USBKBD_SHIFT_RIGHT ) + +/** Either Alt key */ +#define USBKBD_ALT ( USBKBD_ALT_LEFT | USBKBD_ALT_RIGHT ) + +/** Either GUI key */ +#define USBKBD_GUI ( USBKBD_GUI_LEFT | USBKBD_GUI_RIGHT ) + +/** USB keycodes */ +enum usb_keycode { + USBKBD_KEY_A = 0x04, + USBKBD_KEY_Z = 0x1d, + USBKBD_KEY_1 = 0x1e, + USBKBD_KEY_0 = 0x27, + USBKBD_KEY_ENTER = 0x28, + USBKBD_KEY_SPACE = 0x2c, + USBKBD_KEY_MINUS = 0x2d, + USBKBD_KEY_SLASH = 0x38, + USBKBD_KEY_CAPSLOCK = 0x39, + USBKBD_KEY_UP = 0x52, +}; + +/** Keyboard idle duration (in 4ms units) + * + * This is a policy decision. We choose to use an autorepeat rate of + * approximately 40ms. + */ +#define USBKBD_IDLE_DURATION 10 /* 10 x 4ms = 40ms */ + +/** Keyboard auto-repeat hold-off (in units of USBKBD_IDLE_DURATION) + * + * This is a policy decision. We choose to use an autorepeat delay of + * approximately 500ms. + */ +#define USBKBD_HOLDOFF 12 /* 12 x 40ms = 480ms */ + +/** Interrupt endpoint maximum fill level + * + * When idling, we are likely to poll the USB endpoint at only the + * 18.2Hz system timer tick rate. With a typical observed bInterval + * of 10ms (which will be rounded down to 8ms by the HCI drivers), + * this gives approximately 7 completions per poll. + */ +#define USBKBD_INTR_MAX_FILL 8 + +/** Keyboard buffer size + * + * Must be a power of two. + */ +#define USBKBD_BUFSIZE 8 + +/** A USB keyboard device */ +struct usb_keyboard { + /** Name */ + const char *name; + /** List of all USB keyboards */ + struct list_head list; + + /** USB bus */ + struct usb_bus *bus; + /** USB human interface device */ + struct usb_hid hid; + + /** Most recent keyboard report */ + struct usb_keyboard_report report; + /** Most recently pressed non-modifier key (if any) */ + unsigned int keycode; + /** Autorepeat hold-off time (in number of completions reported) */ + unsigned int holdoff; + + /** Keyboard buffer + * + * This stores iPXE key values. + */ + unsigned int key[USBKBD_BUFSIZE]; + /** Keyboard buffer producer counter */ + unsigned int prod; + /** Keyboard buffer consumer counter */ + unsigned int cons; + /** Keyboard buffer sub-consumer counter + * + * This represents the index within the ANSI escape sequence + * corresponding to an iPXE key value. + */ + unsigned int subcons; +}; + +/** + * Calculate keyboard buffer fill level + * + * @v kbd USB keyboard + * @ret fill Keyboard buffer fill level + */ +static inline __attribute__ (( always_inline )) unsigned int +usbkbd_fill ( struct usb_keyboard *kbd ) { + unsigned int fill = ( kbd->prod - kbd->cons ); + + assert ( fill <= USBKBD_BUFSIZE ); + return fill; +} + +#endif /* _USBKBD_H */ |