diff options
Diffstat (limited to 'qemu/roms/u-boot/common/usb_kbd.c')
| -rw-r--r-- | qemu/roms/u-boot/common/usb_kbd.c | 567 |
1 files changed, 0 insertions, 567 deletions
diff --git a/qemu/roms/u-boot/common/usb_kbd.c b/qemu/roms/u-boot/common/usb_kbd.c deleted file mode 100644 index 0b77c16c5..000000000 --- a/qemu/roms/u-boot/common/usb_kbd.c +++ /dev/null @@ -1,567 +0,0 @@ -/* - * (C) Copyright 2001 - * Denis Peter, MPL AG Switzerland - * - * Part of this source has been derived from the Linux USB - * project. - * - * SPDX-License-Identifier: GPL-2.0+ - */ -#include <common.h> -#include <malloc.h> -#include <stdio_dev.h> -#include <asm/byteorder.h> - -#include <usb.h> - -/* - * If overwrite_console returns 1, the stdin, stderr and stdout - * are switched to the serial port, else the settings in the - * environment are used - */ -#ifdef CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE -extern int overwrite_console(void); -#else -int overwrite_console(void) -{ - return 0; -} -#endif - -/* Keyboard sampling rate */ -#define REPEAT_RATE (40 / 4) /* 40msec -> 25cps */ -#define REPEAT_DELAY 10 /* 10 x REPEAT_RATE = 400msec */ - -#define NUM_LOCK 0x53 -#define CAPS_LOCK 0x39 -#define SCROLL_LOCK 0x47 - -/* Modifier bits */ -#define LEFT_CNTR (1 << 0) -#define LEFT_SHIFT (1 << 1) -#define LEFT_ALT (1 << 2) -#define LEFT_GUI (1 << 3) -#define RIGHT_CNTR (1 << 4) -#define RIGHT_SHIFT (1 << 5) -#define RIGHT_ALT (1 << 6) -#define RIGHT_GUI (1 << 7) - -/* Size of the keyboard buffer */ -#define USB_KBD_BUFFER_LEN 0x20 - -/* Device name */ -#define DEVNAME "usbkbd" - -/* Keyboard maps */ -static const unsigned char usb_kbd_numkey[] = { - '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', - '\r', 0x1b, '\b', '\t', ' ', '-', '=', '[', ']', - '\\', '#', ';', '\'', '`', ',', '.', '/' -}; -static const unsigned char usb_kbd_numkey_shifted[] = { - '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', - '\r', 0x1b, '\b', '\t', ' ', '_', '+', '{', '}', - '|', '~', ':', '"', '~', '<', '>', '?' -}; - -static const unsigned char usb_kbd_num_keypad[] = { - '/', '*', '-', '+', '\r', - '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', - '.', 0, 0, 0, '=' -}; - -/* - * map arrow keys to ^F/^B ^N/^P, can't really use the proper - * ANSI sequence for arrow keys because the queuing code breaks - * when a single keypress expands to 3 queue elements - */ -static const unsigned char usb_kbd_arrow[] = { - 0x6, 0x2, 0xe, 0x10 -}; - -/* - * NOTE: It's important for the NUM, CAPS, SCROLL-lock bits to be in this - * order. See usb_kbd_setled() function! - */ -#define USB_KBD_NUMLOCK (1 << 0) -#define USB_KBD_CAPSLOCK (1 << 1) -#define USB_KBD_SCROLLLOCK (1 << 2) -#define USB_KBD_CTRL (1 << 3) - -#define USB_KBD_LEDMASK \ - (USB_KBD_NUMLOCK | USB_KBD_CAPSLOCK | USB_KBD_SCROLLLOCK) - -/* - * USB Keyboard reports are 8 bytes in boot protocol. - * Appendix B of HID Device Class Definition 1.11 - */ -#define USB_KBD_BOOT_REPORT_SIZE 8 - -struct usb_kbd_pdata { - uint32_t repeat_delay; - - uint32_t usb_in_pointer; - uint32_t usb_out_pointer; - uint8_t usb_kbd_buffer[USB_KBD_BUFFER_LEN]; - - uint8_t *new; - uint8_t old[USB_KBD_BOOT_REPORT_SIZE]; - - uint8_t flags; -}; - -extern int __maybe_unused net_busy_flag; - -/* The period of time between two calls of usb_kbd_testc(). */ -static unsigned long __maybe_unused kbd_testc_tms; - -/* Generic keyboard event polling. */ -void usb_kbd_generic_poll(void) -{ - struct stdio_dev *dev; - struct usb_device *usb_kbd_dev; - struct usb_kbd_pdata *data; - struct usb_interface *iface; - struct usb_endpoint_descriptor *ep; - int pipe; - int maxp; - - /* Get the pointer to USB Keyboard device pointer */ - dev = stdio_get_by_name(DEVNAME); - usb_kbd_dev = (struct usb_device *)dev->priv; - data = usb_kbd_dev->privptr; - iface = &usb_kbd_dev->config.if_desc[0]; - ep = &iface->ep_desc[0]; - pipe = usb_rcvintpipe(usb_kbd_dev, ep->bEndpointAddress); - - /* Submit a interrupt transfer request */ - maxp = usb_maxpacket(usb_kbd_dev, pipe); - usb_submit_int_msg(usb_kbd_dev, pipe, data->new, - min(maxp, USB_KBD_BOOT_REPORT_SIZE), - ep->bInterval); -} - -/* Puts character in the queue and sets up the in and out pointer. */ -static void usb_kbd_put_queue(struct usb_kbd_pdata *data, char c) -{ - if (data->usb_in_pointer == USB_KBD_BUFFER_LEN - 1) { - /* Check for buffer full. */ - if (data->usb_out_pointer == 0) - return; - - data->usb_in_pointer = 0; - } else { - /* Check for buffer full. */ - if (data->usb_in_pointer == data->usb_out_pointer - 1) - return; - - data->usb_in_pointer++; - } - - data->usb_kbd_buffer[data->usb_in_pointer] = c; -} - -/* - * Set the LEDs. Since this is used in the irq routine, the control job is - * issued with a timeout of 0. This means, that the job is queued without - * waiting for job completion. - */ -static void usb_kbd_setled(struct usb_device *dev) -{ - struct usb_interface *iface = &dev->config.if_desc[0]; - struct usb_kbd_pdata *data = dev->privptr; - uint32_t leds = data->flags & USB_KBD_LEDMASK; - - usb_control_msg(dev, usb_sndctrlpipe(dev, 0), - USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE, - 0x200, iface->desc.bInterfaceNumber, (void *)&leds, 1, 0); -} - -#define CAPITAL_MASK 0x20 -/* Translate the scancode in ASCII */ -static int usb_kbd_translate(struct usb_kbd_pdata *data, unsigned char scancode, - unsigned char modifier, int pressed) -{ - uint8_t keycode = 0; - - /* Key released */ - if (pressed == 0) { - data->repeat_delay = 0; - return 0; - } - - if (pressed == 2) { - data->repeat_delay++; - if (data->repeat_delay < REPEAT_DELAY) - return 0; - - data->repeat_delay = REPEAT_DELAY; - } - - /* Alphanumeric values */ - if ((scancode > 3) && (scancode <= 0x1d)) { - keycode = scancode - 4 + 'a'; - - if (data->flags & USB_KBD_CAPSLOCK) - keycode &= ~CAPITAL_MASK; - - if (modifier & (LEFT_SHIFT | RIGHT_SHIFT)) { - /* Handle CAPSLock + Shift pressed simultaneously */ - if (keycode & CAPITAL_MASK) - keycode &= ~CAPITAL_MASK; - else - keycode |= CAPITAL_MASK; - } - } - - if ((scancode > 0x1d) && (scancode < 0x3a)) { - /* Shift pressed */ - if (modifier & (LEFT_SHIFT | RIGHT_SHIFT)) - keycode = usb_kbd_numkey_shifted[scancode - 0x1e]; - else - keycode = usb_kbd_numkey[scancode - 0x1e]; - } - - /* Arrow keys */ - if ((scancode >= 0x4f) && (scancode <= 0x52)) - keycode = usb_kbd_arrow[scancode - 0x4f]; - - /* Numeric keypad */ - if ((scancode >= 0x54) && (scancode <= 0x67)) - keycode = usb_kbd_num_keypad[scancode - 0x54]; - - if (data->flags & USB_KBD_CTRL) - keycode = scancode - 0x3; - - if (pressed == 1) { - if (scancode == NUM_LOCK) { - data->flags ^= USB_KBD_NUMLOCK; - return 1; - } - - if (scancode == CAPS_LOCK) { - data->flags ^= USB_KBD_CAPSLOCK; - return 1; - } - if (scancode == SCROLL_LOCK) { - data->flags ^= USB_KBD_SCROLLLOCK; - return 1; - } - } - - /* Report keycode if any */ - if (keycode) { - debug("%c", keycode); - usb_kbd_put_queue(data, keycode); - } - - return 0; -} - -static uint32_t usb_kbd_service_key(struct usb_device *dev, int i, int up) -{ - uint32_t res = 0; - struct usb_kbd_pdata *data = dev->privptr; - uint8_t *new; - uint8_t *old; - - if (up) { - new = data->old; - old = data->new; - } else { - new = data->new; - old = data->old; - } - - if ((old[i] > 3) && - (memscan(new + 2, old[i], USB_KBD_BOOT_REPORT_SIZE - 2) == - new + USB_KBD_BOOT_REPORT_SIZE)) { - res |= usb_kbd_translate(data, old[i], data->new[0], up); - } - - return res; -} - -/* Interrupt service routine */ -static int usb_kbd_irq_worker(struct usb_device *dev) -{ - struct usb_kbd_pdata *data = dev->privptr; - int i, res = 0; - - /* No combo key pressed */ - if (data->new[0] == 0x00) - data->flags &= ~USB_KBD_CTRL; - /* Left or Right Ctrl pressed */ - else if ((data->new[0] == LEFT_CNTR) || (data->new[0] == RIGHT_CNTR)) - data->flags |= USB_KBD_CTRL; - - for (i = 2; i < USB_KBD_BOOT_REPORT_SIZE; i++) { - res |= usb_kbd_service_key(dev, i, 0); - res |= usb_kbd_service_key(dev, i, 1); - } - - /* Key is still pressed */ - if ((data->new[2] > 3) && (data->old[2] == data->new[2])) - res |= usb_kbd_translate(data, data->new[2], data->new[0], 2); - - if (res == 1) - usb_kbd_setled(dev); - - memcpy(data->old, data->new, USB_KBD_BOOT_REPORT_SIZE); - - return 1; -} - -/* Keyboard interrupt handler */ -static int usb_kbd_irq(struct usb_device *dev) -{ - if ((dev->irq_status != 0) || - (dev->irq_act_len != USB_KBD_BOOT_REPORT_SIZE)) { - debug("USB KBD: Error %lX, len %d\n", - dev->irq_status, dev->irq_act_len); - return 1; - } - - return usb_kbd_irq_worker(dev); -} - -/* Interrupt polling */ -static inline void usb_kbd_poll_for_event(struct usb_device *dev) -{ -#if defined(CONFIG_SYS_USB_EVENT_POLL) - struct usb_interface *iface; - struct usb_endpoint_descriptor *ep; - struct usb_kbd_pdata *data; - int pipe; - int maxp; - - /* Get the pointer to USB Keyboard device pointer */ - data = dev->privptr; - iface = &dev->config.if_desc[0]; - ep = &iface->ep_desc[0]; - pipe = usb_rcvintpipe(dev, ep->bEndpointAddress); - - /* Submit a interrupt transfer request */ - maxp = usb_maxpacket(dev, pipe); - usb_submit_int_msg(dev, pipe, &data->new[0], - min(maxp, USB_KBD_BOOT_REPORT_SIZE), - ep->bInterval); - - usb_kbd_irq_worker(dev); -#elif defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP) - struct usb_interface *iface; - struct usb_kbd_pdata *data = dev->privptr; - iface = &dev->config.if_desc[0]; - usb_get_report(dev, iface->desc.bInterfaceNumber, - 1, 0, data->new, USB_KBD_BOOT_REPORT_SIZE); - if (memcmp(data->old, data->new, USB_KBD_BOOT_REPORT_SIZE)) - usb_kbd_irq_worker(dev); -#endif -} - -/* test if a character is in the queue */ -static int usb_kbd_testc(void) -{ - struct stdio_dev *dev; - struct usb_device *usb_kbd_dev; - struct usb_kbd_pdata *data; - -#ifdef CONFIG_CMD_NET - /* - * If net_busy_flag is 1, NET transfer is running, - * then we check key-pressed every second (first check may be - * less than 1 second) to improve TFTP booting performance. - */ - if (net_busy_flag && (get_timer(kbd_testc_tms) < CONFIG_SYS_HZ)) - return 0; - kbd_testc_tms = get_timer(0); -#endif - dev = stdio_get_by_name(DEVNAME); - usb_kbd_dev = (struct usb_device *)dev->priv; - data = usb_kbd_dev->privptr; - - usb_kbd_poll_for_event(usb_kbd_dev); - - return !(data->usb_in_pointer == data->usb_out_pointer); -} - -/* gets the character from the queue */ -static int usb_kbd_getc(void) -{ - struct stdio_dev *dev; - struct usb_device *usb_kbd_dev; - struct usb_kbd_pdata *data; - - dev = stdio_get_by_name(DEVNAME); - usb_kbd_dev = (struct usb_device *)dev->priv; - data = usb_kbd_dev->privptr; - - while (data->usb_in_pointer == data->usb_out_pointer) - usb_kbd_poll_for_event(usb_kbd_dev); - - if (data->usb_out_pointer == USB_KBD_BUFFER_LEN - 1) - data->usb_out_pointer = 0; - else - data->usb_out_pointer++; - - return data->usb_kbd_buffer[data->usb_out_pointer]; -} - -/* probes the USB device dev for keyboard type. */ -static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum) -{ - struct usb_interface *iface; - struct usb_endpoint_descriptor *ep; - struct usb_kbd_pdata *data; - int pipe, maxp; - - if (dev->descriptor.bNumConfigurations != 1) - return 0; - - iface = &dev->config.if_desc[ifnum]; - - if (iface->desc.bInterfaceClass != 3) - return 0; - - if (iface->desc.bInterfaceSubClass != 1) - return 0; - - if (iface->desc.bInterfaceProtocol != 1) - return 0; - - if (iface->desc.bNumEndpoints != 1) - return 0; - - ep = &iface->ep_desc[0]; - - /* Check if endpoint 1 is interrupt endpoint */ - if (!(ep->bEndpointAddress & 0x80)) - return 0; - - if ((ep->bmAttributes & 3) != 3) - return 0; - - debug("USB KBD: found set protocol...\n"); - - data = malloc(sizeof(struct usb_kbd_pdata)); - if (!data) { - printf("USB KBD: Error allocating private data\n"); - return 0; - } - - /* Clear private data */ - memset(data, 0, sizeof(struct usb_kbd_pdata)); - - /* allocate input buffer aligned and sized to USB DMA alignment */ - data->new = memalign(USB_DMA_MINALIGN, - roundup(USB_KBD_BOOT_REPORT_SIZE, USB_DMA_MINALIGN)); - - /* Insert private data into USB device structure */ - dev->privptr = data; - - /* Set IRQ handler */ - dev->irq_handle = usb_kbd_irq; - - pipe = usb_rcvintpipe(dev, ep->bEndpointAddress); - maxp = usb_maxpacket(dev, pipe); - - /* We found a USB Keyboard, install it. */ - usb_set_protocol(dev, iface->desc.bInterfaceNumber, 0); - - debug("USB KBD: found set idle...\n"); - usb_set_idle(dev, iface->desc.bInterfaceNumber, REPEAT_RATE, 0); - - debug("USB KBD: enable interrupt pipe...\n"); - if (usb_submit_int_msg(dev, pipe, data->new, - min(maxp, USB_KBD_BOOT_REPORT_SIZE), - ep->bInterval) < 0) { - printf("Failed to get keyboard state from device %04x:%04x\n", - dev->descriptor.idVendor, dev->descriptor.idProduct); - /* Abort, we don't want to use that non-functional keyboard. */ - return 0; - } - - /* Success. */ - return 1; -} - -/* Search for keyboard and register it if found. */ -int drv_usb_kbd_init(void) -{ - struct stdio_dev usb_kbd_dev, *old_dev; - struct usb_device *dev; - char *stdinname = getenv("stdin"); - int error, i; - - /* Scan all USB Devices */ - for (i = 0; i < USB_MAX_DEVICE; i++) { - /* Get USB device. */ - dev = usb_get_dev_index(i); - if (!dev) - return -1; - - if (dev->devnum == -1) - continue; - - /* Try probing the keyboard */ - if (usb_kbd_probe(dev, 0) != 1) - continue; - - /* We found a keyboard, check if it is already registered. */ - debug("USB KBD: found set up device.\n"); - old_dev = stdio_get_by_name(DEVNAME); - if (old_dev) { - /* Already registered, just return ok. */ - debug("USB KBD: is already registered.\n"); - usb_kbd_deregister(); - return 1; - } - - /* Register the keyboard */ - debug("USB KBD: register.\n"); - memset(&usb_kbd_dev, 0, sizeof(struct stdio_dev)); - strcpy(usb_kbd_dev.name, DEVNAME); - usb_kbd_dev.flags = DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM; - usb_kbd_dev.putc = NULL; - usb_kbd_dev.puts = NULL; - usb_kbd_dev.getc = usb_kbd_getc; - usb_kbd_dev.tstc = usb_kbd_testc; - usb_kbd_dev.priv = (void *)dev; - error = stdio_register(&usb_kbd_dev); - if (error) - return error; - -#ifdef CONFIG_CONSOLE_MUX - error = iomux_doenv(stdin, stdinname); - if (error) - return error; -#else - /* Check if this is the standard input device. */ - if (strcmp(stdinname, DEVNAME)) - return 1; - - /* Reassign the console */ - if (overwrite_console()) - return 1; - - error = console_assign(stdin, DEVNAME); - if (error) - return error; -#endif - - return 1; - } - - /* No USB Keyboard found */ - return -1; -} - -/* Deregister the keyboard. */ -int usb_kbd_deregister(void) -{ -#ifdef CONFIG_SYS_STDIO_DEREGISTER - return stdio_deregister(DEVNAME); -#else - return 1; -#endif -} |