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SubjectRe: [patch 2/2] uml: add framebuffer driver
  Hi,

This patch simply adds a framebuffer driver for UML. It displays the
framebuffer in a X11 window.

please apply,

Gerd
Subject: [patch] uml: x11 fb
From: kraxel@suse.de

Framebuffer driver for UML

Signed-off-by: Gerd Knorr <kraxel@bytesex.org>
Index: vanilla-2.6.16-pre/arch/um/Kconfig
===================================================================
--- vanilla-2.6.16-pre.orig/arch/um/Kconfig
+++ vanilla-2.6.16-pre/arch/um/Kconfig
@@ -117,6 +117,12 @@ config NET
recommended to read the NET-HOWTO, available from
<http://www.tldp.org/docs.html#howto>.

+config X11_FB
+ bool "X11 Framebuffer driver"
+ depends on FB && !MODE_TT && !STATIC_LINK
+ select FB_CFB_FILLRECT
+ select FB_CFB_COPYAREA
+ select FB_CFB_IMAGEBLIT

source "fs/Kconfig.binfmt"

Index: vanilla-2.6.16-pre/arch/um/drivers/Makefile
===================================================================
--- vanilla-2.6.16-pre.orig/arch/um/drivers/Makefile
+++ vanilla-2.6.16-pre/arch/um/drivers/Makefile
@@ -16,6 +16,7 @@ hostaudio-objs := hostaudio_kern.o
ubd-objs := ubd_kern.o ubd_user.o
port-objs := port_kern.o port_user.o
harddog-objs := harddog_kern.o harddog_user.o
+x11-objs := x11_kern.o x11_user.o

LDFLAGS_pcap.o := -r $(shell $(CC) $(CFLAGS) -print-file-name=libpcap.a)

@@ -48,6 +49,7 @@ obj-$(CONFIG_NULL_CHAN) += null.o
obj-$(CONFIG_PORT_CHAN) += port.o
obj-$(CONFIG_PTY_CHAN) += pty.o
obj-$(CONFIG_TTY_CHAN) += tty.o
+obj-$(CONFIG_X11_FB) += x11.o
obj-$(CONFIG_XTERM_CHAN) += xterm.o xterm_kern.o
obj-$(CONFIG_UML_WATCHDOG) += harddog.o
obj-$(CONFIG_BLK_DEV_COW_COMMON) += cow_user.o
Index: vanilla-2.6.16-pre/arch/um/drivers/x11_kern.c
===================================================================
--- /dev/null
+++ vanilla-2.6.16-pre/arch/um/drivers/x11_kern.c
@@ -0,0 +1,550 @@
+#include <linux/init.h>
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/fb.h>
+#include <linux/input.h>
+#include <linux/kthread.h>
+#include <linux/sched.h>
+#include <linux/console.h>
+#include <linux/pagemap.h>
+#include <linux/mm.h>
+#include <linux/vmalloc.h>
+#include <linux/platform_device.h>
+
+#include "irq_kern.h"
+#include "irq_user.h"
+#include "x11_kern.h"
+#include "x11_user.h"
+
+#define DRIVER_NAME "uml-x11-fb"
+
+/* ------------------------------------------------------------------ */
+
+static int x11_enable = 0;
+static int x11_fps = 5;
+static int x11_width;
+static int x11_height;
+
+struct x11_mapping {
+ struct list_head next;
+ struct vm_area_struct *vma;
+ atomic_t map_refs;
+ int faults;
+ struct x11_kerndata *kd;
+};
+
+struct x11_kerndata {
+ /* common stuff */
+ struct x11_window *win;
+ struct task_struct *kthread;
+ wait_queue_head_t wq;
+ int has_data;
+
+ /* framebuffer driver */
+ unsigned char *fb;
+ struct fb_fix_screeninfo *fix;
+ struct fb_var_screeninfo *var;
+ struct fb_info *info;
+ struct timer_list refresh;
+ int dirty, y1, y2;
+
+ /* fb mapping */
+ struct semaphore mm_lock;
+ int nr_pages;
+ struct page **pages;
+ struct list_head mappings;
+
+ /* input drivers */
+ struct input_dev *kbd;
+ struct input_dev *mouse;
+};
+
+void x11_update_screen(struct x11_kerndata *kd)
+{
+ int y1,y2,offset,length;
+ unsigned char *src, *dst;
+ struct list_head *item;
+ struct x11_mapping *map;
+
+ y1 = kd->y1;
+ y2 = kd->y2;
+ kd->dirty = kd->y1 = kd->y2 = 0;
+ down(&kd->mm_lock);
+ list_for_each(item, &kd->mappings) {
+ map = list_entry(item, struct x11_mapping, next);
+ if (!map->faults)
+ continue;
+ zap_page_range(map->vma, map->vma->vm_start,
+ map->vma->vm_end - map->vma->vm_start, NULL);
+ map->faults = 0;
+ }
+ up(&kd->mm_lock);
+
+ offset = y1 * kd->fix->line_length;
+ length = (y2 - y1) * kd->fix->line_length;
+ src = kd->fb + offset;
+ dst = x11_get_fbmem(kd->win) + offset;
+ memcpy(dst,src,length);
+ x11_blit_fb(kd->win, y1, y2);
+}
+
+static int x11_thread(void *data)
+{
+ struct x11_kerndata *kd = data;
+ DECLARE_WAITQUEUE(wait,current);
+
+ add_wait_queue(&kd->wq, &wait);
+ for (;;) {
+ if (kthread_should_stop())
+ break;
+ if (kd->dirty)
+ x11_update_screen(kd);
+ if (kd->has_data) {
+ kd->has_data = 0;
+ x11_has_data(kd->win,kd);
+ reactivate_fd(x11_get_fd(kd->win), X11_IRQ);
+ }
+ set_current_state(TASK_INTERRUPTIBLE);
+ schedule();
+ }
+ remove_wait_queue(&kd->wq, &wait);
+ return 0;
+}
+
+/* ------------------------------------------------------------------ */
+/* input driver */
+
+void x11_kbd_input(struct x11_kerndata *kd, int key, int down)
+{
+ if (key >= KEY_MAX) {
+ if (down)
+ printk("%s: unknown key pressed [%d]\n",
+ __FUNCTION__, key-KEY_MAX);
+ return;
+ }
+ input_report_key(kd->kbd,key,down);
+ input_sync(kd->kbd);
+}
+
+void x11_mouse_input(struct x11_kerndata *kd, int key, int down,
+ int x, int y)
+{
+ if (key != KEY_RESERVED)
+ input_report_key(kd->mouse, key, down);
+ input_report_abs(kd->mouse, ABS_X, x);
+ input_report_abs(kd->mouse, ABS_Y, y);
+ input_sync(kd->mouse);
+}
+
+void x11_cad(struct x11_kerndata *kd)
+{
+ printk("%s\n",__FUNCTION__);
+}
+
+/* ------------------------------------------------------------------ */
+/* framebuffer driver */
+
+static int x11_setcolreg(unsigned regno, unsigned red, unsigned green,
+ unsigned blue, unsigned transp,
+ struct fb_info *info)
+{
+ if (regno >= info->cmap.len)
+ return 1;
+
+ switch (info->var.bits_per_pixel) {
+ case 16:
+ if (info->var.red.offset == 10) {
+ /* 1:5:5:5 */
+ ((u32*) (info->pseudo_palette))[regno] =
+ ((red & 0xf800) >> 1) |
+ ((green & 0xf800) >> 6) |
+ ((blue & 0xf800) >> 11);
+ } else {
+ /* 0:5:6:5 */
+ ((u32*) (info->pseudo_palette))[regno] =
+ ((red & 0xf800) ) |
+ ((green & 0xfc00) >> 5) |
+ ((blue & 0xf800) >> 11);
+ }
+ break;
+ case 24:
+ red >>= 8;
+ green >>= 8;
+ blue >>= 8;
+ ((u32 *)(info->pseudo_palette))[regno] =
+ (red << info->var.red.offset) |
+ (green << info->var.green.offset) |
+ (blue << info->var.blue.offset);
+ break;
+ case 32:
+ red >>= 8;
+ green >>= 8;
+ blue >>= 8;
+ ((u32 *)(info->pseudo_palette))[regno] =
+ (red << info->var.red.offset) |
+ (green << info->var.green.offset) |
+ (blue << info->var.blue.offset);
+ break;
+ }
+ return 0;
+}
+
+static void x11_fb_timer(unsigned long data)
+{
+ struct x11_kerndata *kd = (struct x11_kerndata*)data;
+ kd->dirty++;
+ wake_up(&kd->wq);
+}
+
+static void x11_fb_refresh(struct x11_kerndata *kd, int y1, int h)
+{
+ int y2;
+
+ y2 = y1 + h;
+ if (0 == kd->y2) {
+ kd->y1 = y1;
+ kd->y2 = y2;
+ }
+ if (kd->y1 > y1)
+ kd->y1 = y1;
+ if (kd->y2 < y2)
+ kd->y2 = y2;
+
+ if (timer_pending(&kd->refresh))
+ return;
+ mod_timer(&kd->refresh, jiffies + HZ/x11_fps);
+}
+
+void x11_fillrect(struct fb_info *p, const struct fb_fillrect *rect)
+{
+ struct x11_kerndata *kd = p->par;
+
+ cfb_fillrect(p, rect);
+ x11_fb_refresh(kd, rect->dy, rect->height);
+}
+
+void x11_imageblit(struct fb_info *p, const struct fb_image *image)
+{
+ struct x11_kerndata *kd = p->par;
+
+ cfb_imageblit(p, image);
+ x11_fb_refresh(kd, image->dy, image->height);
+}
+
+void x11_copyarea(struct fb_info *p, const struct fb_copyarea *area)
+{
+ struct x11_kerndata *kd = p->par;
+
+ cfb_copyarea(p, area);
+ x11_fb_refresh(kd, area->dy, area->height);
+}
+
+/* ------------------------------------------------------------------ */
+
+static void
+x11_fb_vm_open(struct vm_area_struct *vma)
+{
+ struct x11_mapping *map = vma->vm_private_data;
+
+ atomic_inc(&map->map_refs);
+}
+
+static void
+x11_fb_vm_close(struct vm_area_struct *vma)
+{
+ struct x11_mapping *map = vma->vm_private_data;
+ struct x11_kerndata *kd = map->kd;
+
+ down(&kd->mm_lock);
+ if (atomic_dec_and_test(&map->map_refs)) {
+ list_del(&map->next);
+ kfree(map);
+ }
+ up(&kd->mm_lock);
+}
+
+static struct page*
+x11_fb_vm_nopage(struct vm_area_struct *vma, unsigned long vaddr,
+ int *type)
+{
+ struct x11_mapping *map = vma->vm_private_data;
+ struct x11_kerndata *kd = map->kd;
+ int pgnr = (vaddr - vma->vm_start) >> PAGE_SHIFT;
+ struct page *page;
+ int y1,y2;
+
+ if (pgnr >= kd->nr_pages)
+ return NOPAGE_SIGBUS;
+
+ down(&kd->mm_lock);
+ page = kd->pages[pgnr];
+ get_page(page);
+ map->faults++;
+
+ y1 = pgnr * PAGE_SIZE / kd->fix->line_length;
+ y2 = (pgnr * PAGE_SIZE + PAGE_SIZE-1) / kd->fix->line_length;
+ if (y2 > kd->var->yres)
+ y2 = kd->var->yres;
+ x11_fb_refresh(kd, y1, y2 - y1);
+ up(&kd->mm_lock);
+
+ if (type)
+ *type = VM_FAULT_MINOR;
+ return page;
+}
+
+static struct vm_operations_struct x11_fb_vm_ops =
+{
+ .open = x11_fb_vm_open,
+ .close = x11_fb_vm_close,
+ .nopage = x11_fb_vm_nopage,
+};
+
+int x11_mmap(struct fb_info *p, struct file *file,
+ struct vm_area_struct * vma)
+{
+ struct x11_kerndata *kd = p->par;
+ struct x11_mapping *map = NULL;
+ int retval;
+ int map_pages;
+
+ down(&kd->mm_lock);
+
+ retval = -ENOMEM;
+ if (NULL == (map = kzalloc(sizeof(*map), GFP_KERNEL))) {
+ printk("%s: oops, out of memory\n",__FUNCTION__);
+ goto out;
+ }
+
+ retval = -EINVAL;
+ if (!(vma->vm_flags & VM_WRITE)) {
+ printk("%s: need writable mapping\n",__FUNCTION__);
+ goto out;
+ }
+ if (!(vma->vm_flags & VM_SHARED)) {
+ printk("%s: need shared mapping\n",__FUNCTION__);
+ goto out;
+ }
+ if (vma->vm_pgoff != 0) {
+ printk("%s: need offset 0 (vm_pgoff=%ld)\n",__FUNCTION__,
+ vma->vm_pgoff);
+ goto out;
+ }
+
+ map_pages = (vma->vm_end - vma->vm_start + PAGE_SIZE-1) >> PAGE_SHIFT;
+ if (map_pages > kd->nr_pages) {
+ printk("%s: mapping to big (%ld > %d)\n",__FUNCTION__,
+ vma->vm_end - vma->vm_start, p->fix.smem_len);
+ goto out;
+ }
+
+ map->vma = vma;
+ map->faults = 0;
+ map->kd = kd;
+ atomic_set(&map->map_refs,1);
+ list_add(&map->next,&kd->mappings);
+ vma->vm_ops = &x11_fb_vm_ops;
+ vma->vm_flags |= VM_DONTEXPAND | VM_RESERVED;
+ vma->vm_private_data = map;
+ retval = 0;
+
+out:
+ if (map)
+ kfree(map);
+ up(&kd->mm_lock);
+ return retval;
+}
+
+/* ------------------------------------------------------------------ */
+
+static struct fb_ops x11_fb_ops = {
+ .owner = THIS_MODULE,
+ .fb_setcolreg = x11_setcolreg,
+ .fb_fillrect = x11_fillrect,
+ .fb_copyarea = x11_copyarea,
+ .fb_imageblit = x11_imageblit,
+ .fb_mmap = x11_mmap,
+};
+
+/* ---------------------------------------------------------------------------- */
+
+static irqreturn_t x11_irq(int irq, void *data, struct pt_regs *unused)
+{
+ struct x11_kerndata *kd = data;
+
+ kd->has_data++;
+ wake_up(&kd->wq);
+ return IRQ_HANDLED;
+}
+
+static int __init x11_probe(struct device *device)
+{
+ struct x11_kerndata *kd;
+ int i;
+
+ kd = kzalloc(sizeof(*kd),GFP_KERNEL);
+ if (NULL == kd)
+ return -ENOMEM;
+
+ kd->kbd = input_allocate_device();
+ kd->mouse = input_allocate_device();
+ if (NULL == kd->kbd || NULL == kd->mouse)
+ goto fail_free;
+
+ kd->win = x11_open(x11_width, x11_height);
+ if (NULL == kd->win) {
+ printk(DRIVER_NAME ": can't open X11 window\n");
+ goto fail_free;
+ }
+ kd->fix = x11_get_fix(kd->win);
+ kd->var = x11_get_var(kd->win);
+ INIT_LIST_HEAD(&kd->mappings);
+
+ /* alloc memory */
+ kd->fb = vmalloc(kd->fix->smem_len);
+ if (NULL == kd->fb) {
+ printk("%s: vmalloc(%d) failed\n",
+ __FUNCTION__,kd->fix->smem_len);
+ goto fail_close;
+ }
+ memset(kd->fb,0,kd->fix->smem_len);
+ kd->nr_pages = (kd->fix->smem_len + PAGE_SIZE-1) >> PAGE_SHIFT;
+ kd->pages = kmalloc(sizeof(struct page*)*kd->nr_pages, GFP_KERNEL);
+ if (NULL == kd->pages)
+ goto fail_vfree;
+ for (i = 0; i < kd->nr_pages; i++)
+ kd->pages[i] = vmalloc_to_page(kd->fb + i*PAGE_SIZE);
+
+ /* framebuffer setup */
+ kd->info = framebuffer_alloc(sizeof(u32) * 256, device);
+ kd->info->pseudo_palette = kd->info->par;
+ kd->info->par = kd;
+ kd->info->screen_base = kd->fb;
+
+ kd->info->fbops = &x11_fb_ops;
+ kd->info->var = *kd->var;
+ kd->info->fix = *kd->fix;
+ kd->info->flags = FBINFO_FLAG_DEFAULT;
+
+ fb_alloc_cmap(&kd->info->cmap, 256, 0);
+ register_framebuffer(kd->info);
+ printk(KERN_INFO "fb%d: %s frame buffer device, %dx%d, %d fps, %d bpp (%d:%d:%d)\n",
+ kd->info->node, kd->info->fix.id,
+ kd->var->xres, kd->var->yres, x11_fps, kd->var->bits_per_pixel,
+ kd->var->red.length, kd->var->green.length, kd->var->blue.length);
+
+ /* keyboard setup */
+ set_bit(EV_KEY, kd->kbd->evbit);
+ for (i = 0; i < KEY_MAX; i++)
+ set_bit(i, kd->kbd->keybit);
+ kd->kbd->id.bustype = BUS_HOST;
+ kd->kbd->name = DRIVER_NAME " virtual keyboard";
+ kd->kbd->phys = DRIVER_NAME "/input0";
+ kd->kbd->cdev.dev = device;
+ input_register_device(kd->kbd);
+
+ /* mouse setup */
+ init_input_dev(kd->mouse);
+ set_bit(EV_ABS, kd->mouse->evbit);
+ set_bit(EV_KEY, kd->mouse->evbit);
+ set_bit(BTN_TOUCH, kd->mouse->keybit);
+ set_bit(BTN_LEFT, kd->mouse->keybit);
+ set_bit(BTN_MIDDLE, kd->mouse->keybit);
+ set_bit(BTN_RIGHT, kd->mouse->keybit);
+ set_bit(ABS_X, kd->mouse->absbit);
+ set_bit(ABS_Y, kd->mouse->absbit);
+ kd->mouse->absmin[ABS_X] = 0;
+ kd->mouse->absmax[ABS_X] = kd->var->xres;
+ kd->mouse->absmin[ABS_Y] = 0;
+ kd->mouse->absmax[ABS_Y] = kd->var->yres;
+ kd->mouse->id.bustype = BUS_HOST;
+ kd->mouse->name = DRIVER_NAME " virtual mouse";
+ kd->mouse->phys = DRIVER_NAME "/input1";
+ kd->mouse->cdev.dev = device;
+ input_register_device(kd->mouse);
+
+ /* misc common kernel stuff */
+ init_MUTEX(&kd->mm_lock);
+ init_waitqueue_head(&kd->wq);
+ init_timer(&kd->refresh);
+ kd->refresh.function = x11_fb_timer;
+ kd->refresh.data = (unsigned long)kd;
+
+ kd->kthread = kthread_run(x11_thread, kd,
+ DRIVER_NAME " thread");
+ um_request_irq(X11_IRQ, x11_get_fd(kd->win), IRQ_READ, x11_irq,
+ SA_INTERRUPT | SA_SHIRQ, DRIVER_NAME, kd);
+
+ return 0;
+
+fail_vfree:
+ vfree(kd->fb);
+fail_close:
+ x11_close(kd->win);
+fail_free:
+ if (kd->kbd)
+ input_free_device(kd->kbd);
+ if (kd->mouse)
+ input_free_device(kd->mouse);
+ kfree(kd);
+ return -ENODEV;
+}
+
+static struct device_driver x11_driver = {
+ .name = DRIVER_NAME,
+ .bus = &platform_bus_type,
+ .probe = x11_probe,
+};
+static struct platform_device x11_device = {
+ .name = DRIVER_NAME,
+};
+
+static int __init x11_init(void)
+{
+ int ret;
+
+ ret = driver_register(&x11_driver);
+ if (ret)
+ return ret;
+ if (!x11_enable)
+ return 0;
+ ret = platform_device_register(&x11_device);
+ if (ret)
+ driver_unregister(&x11_driver);
+ return ret;
+}
+
+static void __exit x11_fini(void)
+{
+ if (x11_enable)
+ platform_device_unregister(&x11_device);
+ driver_unregister(&x11_driver);
+}
+
+module_init(x11_init);
+module_exit(x11_fini);
+
+extern int console_use_vt; /* FIXME */
+
+static int x11_setup(char *str)
+{
+ if (3 == sscanf(str,"%dx%d@%d",&x11_width,&x11_height,&x11_fps) ||
+ 2 == sscanf(str,"%dx%d",&x11_width,&x11_height)) {
+#if defined(CONFIG_DUMMY_CONSOLE)
+ printk("%s: enable linux vt subsystem\n",__FUNCTION__);
+ x11_enable = 1;
+ console_use_vt = 1;
+ conswitchp = &dummy_con;
+#endif
+ return 0;
+ }
+ return -1;
+}
+__setup("x11=", x11_setup);
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */
Index: vanilla-2.6.16-pre/arch/um/drivers/x11_user.c
===================================================================
--- /dev/null
+++ vanilla-2.6.16-pre/arch/um/drivers/x11_user.c
@@ -0,0 +1,514 @@
+#include <stdlib.h>
+#include <string.h>
+
+#include <sys/ipc.h>
+#include <sys/shm.h>
+
+#include <linux/fb.h>
+#include <linux/input.h>
+
+#include <X11/X.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/keysym.h>
+#include <X11/extensions/XShm.h>
+
+#include "x11_kern.h"
+#include "x11_user.h"
+
+/* --------------------------------------------------------------------------- */
+
+struct x11_window {
+ /* misc x11 stuff */
+ Display *dpy;
+ Window root, win;
+ GC gc;
+ XVisualInfo vi;
+ Atom delete_window;
+
+ /* framebuffer -- x11 */
+ XImage *ximage;
+ char *xidata;
+ XShmSegmentInfo shminfo;
+
+ /* framebuffer -- kernel */
+ struct fb_fix_screeninfo fix;
+ struct fb_var_screeninfo var;
+
+ /* kbd state */
+ unsigned char keydown[32];
+};
+
+/* --------------------------------------------------------------------------- */
+
+/*
+ * map X11 keycodes to linux keycodes
+ *
+ * WARNING: X11 keycodes are not portable, this likely breaks as soon
+ * as one uses a X-Server not running on a linux machine as display.
+ *
+ * Using portable keysyms instead creates some strange and hard to
+ * handle keymapping effects through. That happens because both host
+ * and uml machine are mapping keys then ...
+ *
+ * FIXME: Our pseudo mouse driver delivers absolute coordinates in a
+ * touchscreen-like manner. Everybody (gpm, x.org) seems to interpret
+ * those as relative coordinates though.
+ */
+static int x11_keymap[] = {
+ [ 9 ] = KEY_ESC,
+ [ 10 ] = KEY_1,
+ [ 11 ] = KEY_2,
+ [ 12 ] = KEY_3,
+ [ 13 ] = KEY_4,
+ [ 14 ] = KEY_5,
+ [ 15 ] = KEY_6,
+ [ 16 ] = KEY_7,
+ [ 17 ] = KEY_8,
+ [ 18 ] = KEY_9,
+ [ 19 ] = KEY_0,
+ [ 20 ] = KEY_MINUS,
+ [ 21 ] = KEY_EQUAL,
+ [ 22 ] = KEY_BACKSPACE,
+
+ [ 23 ] = KEY_TAB,
+ [ 24 ] = KEY_Q,
+ [ 25 ] = KEY_W,
+ [ 26 ] = KEY_E,
+ [ 27 ] = KEY_R,
+ [ 28 ] = KEY_T,
+ [ 29 ] = KEY_Y,
+ [ 30 ] = KEY_U,
+ [ 31 ] = KEY_I,
+ [ 32 ] = KEY_O,
+ [ 33 ] = KEY_P,
+ [ 34 ] = KEY_LEFTBRACE,
+ [ 35 ] = KEY_RIGHTBRACE,
+ [ 36 ] = KEY_ENTER,
+
+ [ 37 ] = KEY_LEFTCTRL,
+ [ 38 ] = KEY_A,
+ [ 39 ] = KEY_S,
+ [ 40 ] = KEY_D,
+ [ 41 ] = KEY_F,
+ [ 42 ] = KEY_G,
+ [ 43 ] = KEY_H,
+ [ 44 ] = KEY_J,
+ [ 45 ] = KEY_K,
+ [ 46 ] = KEY_L,
+ [ 47 ] = KEY_SEMICOLON,
+ [ 48 ] = KEY_APOSTROPHE,
+ [ 49 ] = KEY_GRAVE,
+
+ [ 50 ] = KEY_LEFTSHIFT,
+ [ 51 ] = KEY_BACKSLASH,
+ [ 52 ] = KEY_Z,
+ [ 53 ] = KEY_X,
+ [ 54 ] = KEY_C,
+ [ 55 ] = KEY_V,
+ [ 56 ] = KEY_B,
+ [ 57 ] = KEY_N,
+ [ 58 ] = KEY_M,
+ [ 59 ] = KEY_COMMA,
+ [ 60 ] = KEY_DOT,
+ [ 61 ] = KEY_SLASH,
+ [ 62 ] = KEY_RIGHTSHIFT,
+
+ [ 63 ] = KEY_KPASTERISK,
+ [ 64 ] = KEY_LEFTALT,
+ [ 65 ] = KEY_SPACE,
+ [ 66 ] = KEY_CAPSLOCK,
+
+ [ 67 ] = KEY_F1,
+ [ 68 ] = KEY_F2,
+ [ 69 ] = KEY_F3,
+ [ 70 ] = KEY_F4,
+ [ 71 ] = KEY_F5,
+ [ 72 ] = KEY_F6,
+ [ 73 ] = KEY_F7,
+ [ 74 ] = KEY_F8,
+ [ 75 ] = KEY_F9,
+ [ 76 ] = KEY_F10,
+ [ 77 ] = KEY_NUMLOCK,
+ [ 78 ] = KEY_SCROLLLOCK,
+
+ [ 79 ] = KEY_KP7,
+ [ 80 ] = KEY_KP8,
+ [ 81 ] = KEY_KP9,
+ [ 82 ] = KEY_KPMINUS,
+ [ 83 ] = KEY_KP4,
+ [ 84 ] = KEY_KP5,
+ [ 85 ] = KEY_KP6,
+ [ 86 ] = KEY_KPPLUS,
+ [ 87 ] = KEY_KP1,
+ [ 88 ] = KEY_KP2,
+ [ 89 ] = KEY_KP3,
+ [ 90 ] = KEY_KP0,
+ [ 91 ] = KEY_KPDOT,
+
+ // [ 92 ] = KEY_Print,
+ // [ 93 ] = KEY_Mode_switch,
+ [ 94 ] = KEY_102ND,
+
+ [ 95 ] = KEY_F11,
+ [ 96 ] = KEY_F12,
+ [ 97 ] = KEY_HOME,
+ [ 98 ] = KEY_UP,
+ [ 99 ] = KEY_PAGEUP,
+ [ 100 ] = KEY_LEFT,
+ [ 102 ] = KEY_RIGHT,
+ [ 103 ] = KEY_END,
+ [ 104 ] = KEY_DOWN,
+ [ 105 ] = KEY_PAGEDOWN,
+ [ 106 ] = KEY_INSERT,
+ [ 107 ] = KEY_DELETE,
+
+ // [ 108 ] = KEY_KP_Enter,
+ [ 109 ] = KEY_RIGHTCTRL,
+ // [ 110 ] = KEY_Pause,
+ // [ 111 ] = KEY_Print,
+ // [ 112 ] = KEY_KP_Divide,
+ [ 113 ] = KEY_RIGHTALT,
+ // [ 114 ] = KEY_Pause,
+ // [ 115 ] = KEY_Super_L,
+ // [ 116 ] = KEY_Super_R,
+ [ 117 ] = KEY_MENU,
+ // [ 124 ] = KEY_ISO_Level3_Shift,
+ // [ 126 ] = KEY_KP_Equal,
+};
+
+static void x11_kbd_send(struct x11_window *win, struct x11_kerndata *kd,
+ int keycode, int updown)
+{
+ int key = KEY_RESERVED;
+
+ if (keycode < sizeof(x11_keymap)/sizeof(x11_keymap[0]))
+ key = x11_keymap[keycode];
+ if (KEY_RESERVED == key)
+ return;
+ x11_kbd_input(kd, key, updown);
+ if (keycode < 256) {
+ int by = keycode / 8;
+ int bi = keycode % 8;
+ if (updown)
+ win->keydown[by] |= (1 << bi);
+ else
+ win->keydown[by] &= ~(1 << bi);
+ }
+}
+
+static void x11_kbd(struct x11_window *win, struct x11_kerndata *kd, XEvent *e)
+{
+ int updown = 0;
+ unsigned long by,bi;
+
+ switch (e->type) {
+ case KeyPress:
+ updown = 1;
+ /* fall though */
+ case KeyRelease:
+ x11_kbd_send(win, kd, e->xkey.keycode, updown);
+ break;
+ case KeymapNotify:
+ for (by = 0; by < 32; by++) {
+ if (win->keydown[by] == e->xkeymap.key_vector[by])
+ continue;
+ for (bi = 0; bi < 8; bi++) {
+ if ((win->keydown[by] & (1 << bi)) ==
+ (e->xkeymap.key_vector[by] & (1 << bi)))
+ continue;
+ updown = e->xkeymap.key_vector[by] & (1 << bi)
+ ? 1 : 0;
+ x11_kbd_send(win, kd, by * 8 + bi, updown);
+ }
+ }
+ break;
+ }
+}
+
+static int x11_mousemap[] = {
+ [ Button1 ] = BTN_LEFT, /* BTN_TOUCH ??? */
+ [ Button2 ] = BTN_MIDDLE,
+ [ Button3 ] = BTN_RIGHT,
+ [ Button4 ] = BTN_FORWARD, /* is this the wheel ??? */
+ [ Button5 ] = BTN_BACK, /* is this the wheel ??? */
+};
+
+static void x11_mouse(struct x11_window *win, struct x11_kerndata *kd,
+ XEvent *e)
+{
+ int key = KEY_RESERVED;
+
+ if (e->xbutton.button < sizeof(x11_mousemap)/sizeof(x11_mousemap[0]))
+ key = x11_mousemap[e->xbutton.button];
+ x11_mouse_input(kd, key, e->type == ButtonPress,
+ e->xbutton.x, e->xbutton.y);
+}
+
+/* --------------------------------------------------------------------------- */
+
+static int mitshm_err;
+
+static int
+catch_no_mitshm(Display * dpy, XErrorEvent * event)
+{
+ mitshm_err++;
+ return 0;
+}
+
+static void init_color(int32_t mask, struct fb_bitfield *bf)
+{
+ int i;
+
+ memset(bf, 0, sizeof(*bf));
+ for (i = 0; i < 32; i++) {
+ if (mask & ((int32_t)1 << i))
+ bf->length++;
+ else if (!bf->length)
+ bf->offset++;
+ }
+}
+
+struct x11_window *x11_open(int width, int height)
+{
+ char *title = "user mode linux framebuffer";
+ struct x11_window *win;
+ XSizeHints hints;
+ XTextProperty prop;
+ XVisualInfo *info, template;
+ void *old_handler;
+ int n,bytes_pp;
+
+ win = malloc(sizeof(*win));
+ if (NULL == win)
+ goto fail;
+
+ win->dpy = XOpenDisplay(NULL);
+ if (NULL == win->dpy)
+ goto fail_free;
+
+ /* get visual info */
+ template.screen = XDefaultScreen(win->dpy);
+ template.depth = DefaultDepth(win->dpy, DefaultScreen(win->dpy));
+ info = XGetVisualInfo(win->dpy, VisualScreenMask | VisualDepthMask,
+ &template, &n);
+ if (0 == n)
+ goto fail_free;
+ win->vi = info[0];
+ XFree(info);
+ if (win->vi.class != TrueColor && win->vi.class != DirectColor)
+ goto fail_free;
+
+ /* create pixmap */
+ mitshm_err = 0;
+ old_handler = XSetErrorHandler(catch_no_mitshm);
+ win->ximage = XShmCreateImage(win->dpy,win->vi.visual,win->vi.depth,
+ ZPixmap, NULL, &win->shminfo,
+ width, height);
+ if (NULL == win->ximage)
+ goto shm_error;
+ bytes_pp = win->ximage->bits_per_pixel/8;
+ win->shminfo.shmid = shmget(IPC_PRIVATE,
+ win->ximage->bytes_per_line * win->ximage->height,
+ IPC_CREAT | 0777);
+ if (-1 == win->shminfo.shmid)
+ goto shm_error;
+ win->shminfo.shmaddr = (char *) shmat(win->shminfo.shmid, 0, 0);
+ if ((void *)-1 == win->shminfo.shmaddr)
+ goto shm_error;
+
+ win->ximage->data = win->shminfo.shmaddr;
+ win->shminfo.readOnly = False;
+ XShmAttach(win->dpy, &win->shminfo);
+ XSync(win->dpy, False);
+ if (mitshm_err)
+ goto shm_error;
+ shmctl(win->shminfo.shmid, IPC_RMID, 0);
+ XSetErrorHandler(old_handler);
+ goto have_ximage;
+
+shm_error:
+ /* can't use shared memory -- cleanup and try without */
+ if (win->ximage) {
+ XDestroyImage(win->ximage);
+ win->ximage = NULL;
+#if 1
+ /*
+ Hmm, seems not to work without MIT shm, maybe due
+ to the amount of data being sent over the socket
+ then? What does libX11 when writing to the socket
+ returns -EAGAIN?
+ */
+ goto fail_free;
+#endif
+ }
+ if ((void *)-1 != win->shminfo.shmaddr && NULL != win->shminfo.shmaddr)
+ shmdt(win->shminfo.shmaddr);
+ XSetErrorHandler(old_handler);
+
+ memset(&win->shminfo,0,sizeof(win->shminfo));
+ if (NULL == (win->xidata = malloc(width * height *
+ (win->vi.depth > 16) ? 4 : 2)))
+ goto fail_free;
+
+ win->ximage = XCreateImage(win->dpy, win->vi.visual, win->vi.depth,
+ ZPixmap, 0, win->xidata,
+ width, height, 8, 0);
+ bytes_pp = win->ximage->bits_per_pixel/8;
+
+have_ximage:
+ /* fill structs */
+ win->var.xres = width;
+ win->var.xres_virtual = width;
+ win->var.yres = height;
+ win->var.yres_virtual = height;
+ win->var.bits_per_pixel = bytes_pp * 8;
+ win->var.pixclock = 10000000 / win->var.xres * 1000 / win->var.yres;
+ win->var.left_margin = (win->var.xres / 8) & 0xf8;
+ win->var.hsync_len = (win->var.xres / 8) & 0xf8;
+
+ init_color(win->vi.red_mask, &win->var.red);
+ init_color(win->vi.green_mask, &win->var.green);
+ init_color(win->vi.blue_mask, &win->var.blue);
+
+ win->var.activate = FB_ACTIVATE_NOW;
+ win->var.height = -1;
+ win->var.width = -1;
+ win->var.right_margin = 32;
+ win->var.upper_margin = 16;
+ win->var.lower_margin = 4;
+ win->var.vsync_len = 4;
+ win->var.vmode = FB_VMODE_NONINTERLACED;
+
+ win->fix.visual = FB_VISUAL_TRUECOLOR;
+ win->fix.line_length = win->ximage->bytes_per_line;
+ win->fix.smem_start = 0;
+ win->fix.smem_len = win->fix.line_length * win->var.yres;
+
+ strcpy(win->fix.id,"x11");
+ win->fix.type = FB_TYPE_PACKED_PIXELS;
+ win->fix.accel = FB_ACCEL_NONE;
+
+ /* create + init window */
+ hints.flags = PMinSize | PMaxSize;
+ hints.min_width = width;
+ hints.min_height = height;
+ hints.max_width = width;
+ hints.max_height = height;
+ XStringListToTextProperty(&title,1,&prop);
+
+ win->root = RootWindow(win->dpy, DefaultScreen(win->dpy));
+ win->win = XCreateSimpleWindow(win->dpy, win->root,
+ 0, 0, width, height,
+ CopyFromParent, CopyFromParent,
+ BlackPixel(win->dpy, DefaultScreen(win->dpy)));
+ win->gc = XCreateGC(win->dpy, win->win, 0, NULL);
+ XSelectInput(win->dpy, win->win,
+ KeyPressMask | KeyReleaseMask | /* virtual keyboard */
+ ButtonPressMask | ButtonReleaseMask | /* mouse (touchscreen?) */
+ PointerMotionMask | ExposureMask | StructureNotifyMask |
+ PropertyChangeMask | KeymapStateMask);
+ XMapWindow(win->dpy,win->win);
+ XSetWMNormalHints(win->dpy,win->win,&hints);
+ XSetWMName(win->dpy,win->win,&prop);
+ win->delete_window = XInternAtom(win->dpy, "WM_DELETE_WINDOW", False);
+ XSetWMProtocols(win->dpy, win->win, &win->delete_window, 1);
+
+ XFlush(win->dpy);
+ return win;
+
+fail_free:
+ free(win);
+fail:
+ return NULL;
+}
+
+void x11_close(struct x11_window *win)
+{
+ if (win->shminfo.shmid) {
+ XShmDetach(win->dpy, &win->shminfo);
+ XDestroyImage(win->ximage);
+ shmdt(win->shminfo.shmaddr);
+ } else {
+ XDestroyImage(win->ximage);
+ }
+ XDestroyWindow(win->dpy,win->win);
+ XCloseDisplay(win->dpy);
+}
+
+int x11_get_fd(struct x11_window *win)
+{
+ return ConnectionNumber(win->dpy);
+}
+
+struct fb_fix_screeninfo* x11_get_fix(struct x11_window *win)
+{
+ return &win->fix;
+}
+
+struct fb_var_screeninfo* x11_get_var(struct x11_window *win)
+{
+ return &win->var;
+}
+
+void* x11_get_fbmem(struct x11_window *win)
+{
+ return win->ximage->data;
+}
+
+int x11_blit_fb(struct x11_window *win, int y1, int y2)
+{
+ int x1 = 0;
+ int x2 = win->var.xres;
+
+ if (win->shminfo.shmid) {
+ XShmPutImage(win->dpy, win->win, win->gc, win->ximage,
+ x1,y1,x1,y1, x2-x1,y2-y1, True);
+ } else {
+ XPutImage(win->dpy, win->win, win->gc, win->ximage,
+ x1,y1,x1,y1, x2-x1,y2-y1);
+ }
+ XFlush(win->dpy);
+ return 0;
+}
+
+int x11_has_data(struct x11_window *win, struct x11_kerndata *kd)
+{
+ XEvent e;
+ int count = 0;
+
+ while (True == XCheckMaskEvent(win->dpy, ~0, &e)) {
+ count++;
+ switch (e.type) {
+ case KeyPress:
+ case KeyRelease:
+ case KeymapNotify:
+ x11_kbd(win, kd, &e);
+ break;
+ case ButtonPress:
+ case ButtonRelease:
+ x11_mouse(win, kd, &e);
+ break;
+ case MotionNotify:
+ x11_mouse_input(kd, KEY_RESERVED, 0,
+ e.xmotion.x, e.xmotion.y);
+ break;
+ case Expose:
+ if (0 == e.xexpose.count)
+ x11_blit_fb(win, 0, win->var.yres);
+ break;
+ case ClientMessage:
+ /* hmm, don't get client messages ... */
+ if (e.xclient.data.l[0] == win->delete_window)
+ x11_cad(kd);
+ break;
+ }
+ }
+ return count;
+}
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */
Index: vanilla-2.6.16-pre/arch/um/include/x11_kern.h
===================================================================
--- /dev/null
+++ vanilla-2.6.16-pre/arch/um/include/x11_kern.h
@@ -0,0 +1,9 @@
+/* x11_kern */
+
+struct x11_window;
+struct x11_kerndata;
+
+void x11_kbd_input(struct x11_kerndata *kd, int key, int down);
+void x11_mouse_input(struct x11_kerndata *kd, int key, int down,
+ int x, int y);
+void x11_cad(struct x11_kerndata *kd);
Index: vanilla-2.6.16-pre/arch/um/include/x11_user.h
===================================================================
--- /dev/null
+++ vanilla-2.6.16-pre/arch/um/include/x11_user.h
@@ -0,0 +1,15 @@
+/* x11_user */
+
+struct x11_window;
+struct x11_kerndata;
+
+struct x11_window *x11_open(int width, int height);
+void x11_close(struct x11_window *win);
+int x11_has_data(struct x11_window *win, struct x11_kerndata *kd);
+int x11_blit_fb(struct x11_window *win, int y1, int y2);
+
+int x11_get_fd(struct x11_window *win);
+struct fb_fix_screeninfo* x11_get_fix(struct x11_window *win);
+struct fb_var_screeninfo* x11_get_var(struct x11_window *win);
+void* x11_get_fbmem(struct x11_window *win);
+
Index: vanilla-2.6.16-pre/drivers/video/fbmem.c
===================================================================
--- vanilla-2.6.16-pre.orig/drivers/video/fbmem.c
+++ vanilla-2.6.16-pre/drivers/video/fbmem.c
@@ -1206,12 +1206,16 @@ fb_mmap(struct file *file, struct vm_are
vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
else
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+#elif defined(CONFIG_UML)
+ /* nothing */
#else
#warning What do we have to do here??
#endif
+#ifndef CONFIG_UML
if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
vma->vm_end - vma->vm_start, vma->vm_page_prot))
return -EAGAIN;
+#endif
#endif /* !__sparc_v9__ */
return 0;
#endif /* !sparc32 */
Index: vanilla-2.6.16-pre/include/asm-um/irq.h
===================================================================
--- vanilla-2.6.16-pre.orig/include/asm-um/irq.h
+++ vanilla-2.6.16-pre/include/asm-um/irq.h
@@ -15,8 +15,9 @@
#define SIGIO_WRITE_IRQ 11
#define TELNETD_IRQ 12
#define XTERM_IRQ 13
+#define X11_IRQ 14

-#define LAST_IRQ XTERM_IRQ
+#define LAST_IRQ X11_IRQ
#define NR_IRQS (LAST_IRQ + 1)

#endif
Index: vanilla-2.6.16-pre/arch/um/Makefile
===================================================================
--- vanilla-2.6.16-pre.orig/arch/um/Makefile
+++ vanilla-2.6.16-pre/arch/um/Makefile
@@ -127,12 +127,22 @@ CPPFLAGS_vmlinux.lds = -U$(SUBARCH) \
#The wrappers will select whether using "malloc" or the kernel allocator.
LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc

+ifeq ($(SUBARCH),x86_64)
+ libdir = lib64
+else
+ libdir = lib
+endif
+UML_LIBS := -L/usr/$(libdir) -lutil
+ifeq ($(CONFIG_X11_FB),y)
+UML_LIBS += -L/usr/X11R6/$(libdir) -lX11 -lXext
+endif
+
CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS)
define cmd_vmlinux__
$(CC) $(CFLAGS_vmlinux) -o $@ \
-Wl,-T,$(vmlinux-lds) $(vmlinux-init) \
-Wl,--start-group $(vmlinux-main) -Wl,--end-group \
- -lutil \
+ $(UML_LIBS) \
$(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) \
FORCE ,$^) ; rm -f linux
endef
\
 
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  Last update: 2006-01-24 17:05    [from the cache]
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