Release 4.11 drivers/gpu/drm/udl/udl_fb.c
/*
* Copyright (C) 2012 Red Hat
*
* based in parts on udlfb.c:
* Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it>
* Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com>
* Copyright (C) 2009 Bernie Thompson <bernie@plugable.com>
*
* This file is subject to the terms and conditions of the GNU General Public
* License v2. See the file COPYING in the main directory of this archive for
* more details.
*/
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/fb.h>
#include <linux/dma-buf.h>
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include "udl_drv.h"
#include <drm/drm_fb_helper.h>
#define DL_DEFIO_WRITE_DELAY (HZ/20)
/* fb_deferred_io.delay in jiffies */
static int fb_defio = 0;
/* Optionally enable experimental fb_defio mmap support */
static int fb_bpp = 16;
module_param(fb_bpp, int, S_IWUSR | S_IRUSR | S_IWGRP | S_IRGRP);
module_param(fb_defio, int, S_IWUSR | S_IRUSR | S_IWGRP | S_IRGRP);
struct udl_fbdev {
struct drm_fb_helper helper;
struct udl_framebuffer ufb;
int fb_count;
};
#define DL_ALIGN_UP(x, a) ALIGN(x, a)
#define DL_ALIGN_DOWN(x, a) ALIGN(x-(a-1), a)
/** Read the red component (0..255) of a 32 bpp colour. */
#define DLO_RGB_GETRED(col) (uint8_t)((col) & 0xFF)
/** Read the green component (0..255) of a 32 bpp colour. */
#define DLO_RGB_GETGRN(col) (uint8_t)(((col) >> 8) & 0xFF)
/** Read the blue component (0..255) of a 32 bpp colour. */
#define DLO_RGB_GETBLU(col) (uint8_t)(((col) >> 16) & 0xFF)
/** Return red/green component of a 16 bpp colour number. */
#define DLO_RG16(red, grn) (uint8_t)((((red) & 0xF8) | ((grn) >> 5)) & 0xFF)
/** Return green/blue component of a 16 bpp colour number. */
#define DLO_GB16(grn, blu) (uint8_t)(((((grn) & 0x1C) << 3) | ((blu) >> 3)) & 0xFF)
/** Return 8 bpp colour number from red, green and blue components. */
#define DLO_RGB8(red, grn, blu) ((((red) << 5) | (((grn) & 3) << 3) | ((blu) & 7)) & 0xFF)
#if 0
static uint8_t rgb8(uint32_t col)
{
uint8_t red = DLO_RGB_GETRED(col);
uint8_t grn = DLO_RGB_GETGRN(col);
uint8_t blu = DLO_RGB_GETBLU(col);
return DLO_RGB8(red, grn, blu);
}
static uint16_t rgb16(uint32_t col)
{
uint8_t red = DLO_RGB_GETRED(col);
uint8_t grn = DLO_RGB_GETGRN(col);
uint8_t blu = DLO_RGB_GETBLU(col);
return (DLO_RG16(red, grn) << 8) + DLO_GB16(grn, blu);
}
#endif
int udl_handle_damage(struct udl_framebuffer *fb, int x, int y,
int width, int height)
{
struct drm_device *dev = fb->base.dev;
struct udl_device *udl = dev->dev_private;
int i, ret;
char *cmd;
cycles_t start_cycles, end_cycles;
int bytes_sent = 0;
int bytes_identical = 0;
struct urb *urb;
int aligned_x;
int bpp = fb->base.format->cpp[0];
if (!fb->active_16)
return 0;
if (!fb->obj->vmapping) {
ret = udl_gem_vmap(fb->obj);
if (ret == -ENOMEM) {
DRM_ERROR("failed to vmap fb\n");
return 0;
}
if (!fb->obj->vmapping) {
DRM_ERROR("failed to vmapping\n");
return 0;
}
}
aligned_x = DL_ALIGN_DOWN(x, sizeof(unsigned long));
width = DL_ALIGN_UP(width + (x-aligned_x), sizeof(unsigned long));
x = aligned_x;
if ((width <= 0) ||
(x + width > fb->base.width) ||
(y + height > fb->base.height))
return -EINVAL;
start_cycles = get_cycles();
urb = udl_get_urb(dev);
if (!urb)
return 0;
cmd = urb->transfer_buffer;
for (i = y; i < y + height ; i++) {
const int line_offset = fb->base.pitches[0] * i;
const int byte_offset = line_offset + (x * bpp);
const int dev_byte_offset = (fb->base.width * bpp * i) + (x * bpp);
if (udl_render_hline(dev, bpp, &urb,
(char *) fb->obj->vmapping,
&cmd, byte_offset, dev_byte_offset,
width * bpp,
&bytes_identical, &bytes_sent))
goto error;
}
if (cmd > (char *) urb->transfer_buffer) {
/* Send partial buffer remaining before exiting */
int len = cmd - (char *) urb->transfer_buffer;
ret = udl_submit_urb(dev, urb, len);
bytes_sent += len;
} else
udl_urb_completion(urb);
error:
atomic_add(bytes_sent, &udl->bytes_sent);
atomic_add(bytes_identical, &udl->bytes_identical);
atomic_add(width*height*bpp, &udl->bytes_rendered);
end_cycles = get_cycles();
atomic_add(((unsigned int) ((end_cycles - start_cycles)
>> 10)), /* Kcycles */
&udl->cpu_kcycles_used);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dave Airlie | 395 | 82.64% | 4 | 57.14% |
| Noralf Trönnes | 75 | 15.69% | 1 | 14.29% |
| Ville Syrjälä | 6 | 1.26% | 1 | 14.29% |
| David Herrmann | 2 | 0.42% | 1 | 14.29% |
| Total | 478 | 100.00% | 7 | 100.00% |
static int udl_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
{
unsigned long start = vma->vm_start;
unsigned long size = vma->vm_end - vma->vm_start;
unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
unsigned long page, pos;
if (offset + size > info->fix.smem_len)
return -EINVAL;
pos = (unsigned long)info->fix.smem_start + offset;
pr_notice("mmap() framebuffer addr:%lu size:%lu\n",
pos, size);
while (size > 0) {
page = vmalloc_to_pfn((void *)pos);
if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED))
return -EAGAIN;
start += PAGE_SIZE;
pos += PAGE_SIZE;
if (size > PAGE_SIZE)
size -= PAGE_SIZE;
else
size = 0;
}
/* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by remap_pfn_range() */
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dave Airlie | 155 | 99.36% | 1 | 50.00% |
| Konstantin Khlebnikov | 1 | 0.64% | 1 | 50.00% |
| Total | 156 | 100.00% | 2 | 100.00% |
/*
* It's common for several clients to have framebuffer open simultaneously.
* e.g. both fbcon and X. Makes things interesting.
* Assumes caller is holding info->lock (for open and release at least)
*/
static int udl_fb_open(struct fb_info *info, int user)
{
struct udl_fbdev *ufbdev = info->par;
struct drm_device *dev = ufbdev->ufb.base.dev;
struct udl_device *udl = dev->dev_private;
/* If the USB device is gone, we don't accept new opens */
if (drm_device_is_unplugged(udl->ddev))
return -ENODEV;
ufbdev->fb_count++;
#ifdef CONFIG_DRM_FBDEV_EMULATION
if (fb_defio && (info->fbdefio == NULL)) {
/* enable defio at last moment if not disabled by client */
struct fb_deferred_io *fbdefio;
fbdefio = kmalloc(sizeof(struct fb_deferred_io), GFP_KERNEL);
if (fbdefio) {
fbdefio->delay = DL_DEFIO_WRITE_DELAY;
fbdefio->deferred_io = drm_fb_helper_deferred_io;
}
info->fbdefio = fbdefio;
fb_deferred_io_init(info);
}
#endif
pr_notice("open /dev/fb%d user=%d fb_info=%p count=%d\n",
info->node, user, info, ufbdev->fb_count);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dave Airlie | 145 | 96.03% | 1 | 33.33% |
| Daniel Vetter | 5 | 3.31% | 1 | 33.33% |
| Noralf Trönnes | 1 | 0.66% | 1 | 33.33% |
| Total | 151 | 100.00% | 3 | 100.00% |
/*
* Assumes caller is holding info->lock mutex (for open and release at least)
*/
static int udl_fb_release(struct fb_info *info, int user)
{
struct udl_fbdev *ufbdev = info->par;
ufbdev->fb_count--;
#ifdef CONFIG_DRM_FBDEV_EMULATION
if ((ufbdev->fb_count == 0) && (info->fbdefio)) {
fb_deferred_io_cleanup(info);
kfree(info->fbdefio);
info->fbdefio = NULL;
info->fbops->fb_mmap = udl_fb_mmap;
}
#endif
pr_warn("released /dev/fb%d user=%d count=%d\n",
info->node, user, ufbdev->fb_count);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dave Airlie | 90 | 94.74% | 1 | 50.00% |
| Daniel Vetter | 5 | 5.26% | 1 | 50.00% |
| Total | 95 | 100.00% | 2 | 100.00% |
static struct fb_ops udlfb_ops = {
.owner = THIS_MODULE,
DRM_FB_HELPER_DEFAULT_OPS,
.fb_fillrect = drm_fb_helper_sys_fillrect,
.fb_copyarea = drm_fb_helper_sys_copyarea,
.fb_imageblit = drm_fb_helper_sys_imageblit,
.fb_mmap = udl_fb_mmap,
.fb_open = udl_fb_open,
.fb_release = udl_fb_release,
};
static int udl_user_framebuffer_dirty(struct drm_framebuffer *fb,
struct drm_file *file,
unsigned flags, unsigned color,
struct drm_clip_rect *clips,
unsigned num_clips)
{
struct udl_framebuffer *ufb = to_udl_fb(fb);
int i;
int ret = 0;
drm_modeset_lock_all(fb->dev);
if (!ufb->active_16)
goto unlock;
if (ufb->obj->base.import_attach) {
ret = dma_buf_begin_cpu_access(ufb->obj->base.import_attach->dmabuf,
DMA_FROM_DEVICE);
if (ret)
goto unlock;
}
for (i = 0; i < num_clips; i++) {
ret = udl_handle_damage(ufb, clips[i].x1, clips[i].y1,
clips[i].x2 - clips[i].x1,
clips[i].y2 - clips[i].y1);
if (ret)
break;
}
if (ufb->obj->base.import_attach) {
ret = dma_buf_end_cpu_access(ufb->obj->base.import_attach->dmabuf,
DMA_FROM_DEVICE);
}
unlock:
drm_modeset_unlock_all(fb->dev);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dave Airlie | 186 | 88.15% | 2 | 40.00% |
| Ville Syrjälä | 22 | 10.43% | 1 | 20.00% |
| Chris Wilson | 2 | 0.95% | 1 | 20.00% |
| David Herrmann | 1 | 0.47% | 1 | 20.00% |
| Total | 211 | 100.00% | 5 | 100.00% |
static void udl_user_framebuffer_destroy(struct drm_framebuffer *fb)
{
struct udl_framebuffer *ufb = to_udl_fb(fb);
if (ufb->obj)
drm_gem_object_unreference_unlocked(&ufb->obj->base);
drm_framebuffer_cleanup(fb);
kfree(ufb);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dave Airlie | 47 | 100.00% | 1 | 100.00% |
| Total | 47 | 100.00% | 1 | 100.00% |
static const struct drm_framebuffer_funcs udlfb_funcs = {
.destroy = udl_user_framebuffer_destroy,
.dirty = udl_user_framebuffer_dirty,
};
static int
udl_framebuffer_init(struct drm_device *dev,
struct udl_framebuffer *ufb,
const struct drm_mode_fb_cmd2 *mode_cmd,
struct udl_gem_object *obj)
{
int ret;
ufb->obj = obj;
drm_helper_mode_fill_fb_struct(dev, &ufb->base, mode_cmd);
ret = drm_framebuffer_init(dev, &ufb->base, &udlfb_funcs);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dave Airlie | 54 | 81.82% | 1 | 25.00% |
| Daniel Vetter | 9 | 13.64% | 1 | 25.00% |
| Ville Syrjälä | 3 | 4.55% | 2 | 50.00% |
| Total | 66 | 100.00% | 4 | 100.00% |
static int udlfb_create(struct drm_fb_helper *helper,
struct drm_fb_helper_surface_size *sizes)
{
struct udl_fbdev *ufbdev =
container_of(helper, struct udl_fbdev, helper);
struct drm_device *dev = ufbdev->helper.dev;
struct fb_info *info;
struct drm_framebuffer *fb;
struct drm_mode_fb_cmd2 mode_cmd;
struct udl_gem_object *obj;
uint32_t size;
int ret = 0;
if (sizes->surface_bpp == 24)
sizes->surface_bpp = 32;
mode_cmd.width = sizes->surface_width;
mode_cmd.height = sizes->surface_height;
mode_cmd.pitches[0] = mode_cmd.width * ((sizes->surface_bpp + 7) / 8);
mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
sizes->surface_depth);
size = mode_cmd.pitches[0] * mode_cmd.height;
size = ALIGN(size, PAGE_SIZE);
obj = udl_gem_alloc_object(dev, size);
if (!obj)
goto out;
ret = udl_gem_vmap(obj);
if (ret) {
DRM_ERROR("failed to vmap fb\n");
goto out_gfree;
}
info = drm_fb_helper_alloc_fbi(helper);
if (IS_ERR(info)) {
ret = PTR_ERR(info);
goto out_gfree;
}
info->par = ufbdev;
ret = udl_framebuffer_init(dev, &ufbdev->ufb, &mode_cmd, obj);
if (ret)
goto out_destroy_fbi;
fb = &ufbdev->ufb.base;
ufbdev->helper.fb = fb;
strcpy(info->fix.id, "udldrmfb");
info->screen_base = ufbdev->ufb.obj->vmapping;
info->fix.smem_len = size;
info->fix.smem_start = (unsigned long)ufbdev->ufb.obj->vmapping;
info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT;
info->fbops = &udlfb_ops;
drm_fb_helper_fill_fix(info, fb->pitches[0], fb->format->depth);
drm_fb_helper_fill_var(info, &ufbdev->helper, sizes->fb_width, sizes->fb_height);
DRM_DEBUG_KMS("allocated %dx%d vmal %p\n",
fb->width, fb->height,
ufbdev->ufb.obj->vmapping);
return ret;
out_destroy_fbi:
drm_fb_helper_release_fbi(helper);
out_gfree:
drm_gem_object_unreference_unlocked(&ufbdev->ufb.obj->base);
out:
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dave Airlie | 383 | 91.19% | 1 | 16.67% |
| Archit Taneja | 17 | 4.05% | 1 | 16.67% |
| Daniel Vetter | 12 | 2.86% | 2 | 33.33% |
| Fabian Frederick | 6 | 1.43% | 1 | 16.67% |
| Ville Syrjälä | 2 | 0.48% | 1 | 16.67% |
| Total | 420 | 100.00% | 6 | 100.00% |
static const struct drm_fb_helper_funcs udl_fb_helper_funcs = {
.fb_probe = udlfb_create,
};
static void udl_fbdev_destroy(struct drm_device *dev,
struct udl_fbdev *ufbdev)
{
drm_fb_helper_unregister_fbi(&ufbdev->helper);
drm_fb_helper_release_fbi(&ufbdev->helper);
drm_fb_helper_fini(&ufbdev->helper);
drm_framebuffer_unregister_private(&ufbdev->ufb.base);
drm_framebuffer_cleanup(&ufbdev->ufb.base);
drm_gem_object_unreference_unlocked(&ufbdev->ufb.obj->base);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dave Airlie | 56 | 77.78% | 1 | 33.33% |
| Daniel Vetter | 10 | 13.89% | 1 | 33.33% |
| Archit Taneja | 6 | 8.33% | 1 | 33.33% |
| Total | 72 | 100.00% | 3 | 100.00% |
int udl_fbdev_init(struct drm_device *dev)
{
struct udl_device *udl = dev->dev_private;
int bpp_sel = fb_bpp;
struct udl_fbdev *ufbdev;
int ret;
ufbdev = kzalloc(sizeof(struct udl_fbdev), GFP_KERNEL);
if (!ufbdev)
return -ENOMEM;
udl->fbdev = ufbdev;
drm_fb_helper_prepare(dev, &ufbdev->helper, &udl_fb_helper_funcs);
ret = drm_fb_helper_init(dev, &ufbdev->helper, 1);
if (ret)
goto free;
ret = drm_fb_helper_single_add_all_connectors(&ufbdev->helper);
if (ret)
goto fini;
/* disable all the possible outputs/crtcs before entering KMS mode */
drm_helper_disable_unused_functions(dev);
ret = drm_fb_helper_initial_config(&ufbdev->helper, bpp_sel);
if (ret)
goto fini;
return 0;
fini:
drm_fb_helper_fini(&ufbdev->helper);
free:
kfree(ufbdev);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dave Airlie | 106 | 66.67% | 1 | 25.00% |
| Thierry Reding | 47 | 29.56% | 2 | 50.00% |
| Daniel Vetter | 6 | 3.77% | 1 | 25.00% |
| Total | 159 | 100.00% | 4 | 100.00% |
void udl_fbdev_cleanup(struct drm_device *dev)
{
struct udl_device *udl = dev->dev_private;
if (!udl->fbdev)
return;
udl_fbdev_destroy(dev, udl->fbdev);
kfree(udl->fbdev);
udl->fbdev = NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dave Airlie | 49 | 100.00% | 1 | 100.00% |
| Total | 49 | 100.00% | 1 | 100.00% |
void udl_fbdev_unplug(struct drm_device *dev)
{
struct udl_device *udl = dev->dev_private;
struct udl_fbdev *ufbdev;
if (!udl->fbdev)
return;
ufbdev = udl->fbdev;
drm_fb_helper_unlink_fbi(&ufbdev->helper);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dave Airlie | 43 | 93.48% | 1 | 50.00% |
| Archit Taneja | 3 | 6.52% | 1 | 50.00% |
| Total | 46 | 100.00% | 2 | 100.00% |
struct drm_framebuffer *
udl_fb_user_fb_create(struct drm_device *dev,
struct drm_file *file,
const struct drm_mode_fb_cmd2 *mode_cmd)
{
struct drm_gem_object *obj;
struct udl_framebuffer *ufb;
int ret;
uint32_t size;
obj = drm_gem_object_lookup(file, mode_cmd->handles[0]);
if (obj == NULL)
return ERR_PTR(-ENOENT);
size = mode_cmd->pitches[0] * mode_cmd->height;
size = ALIGN(size, PAGE_SIZE);
if (size > obj->size) {
DRM_ERROR("object size not sufficient for fb %d %zu %d %d\n", size, obj->size, mode_cmd->pitches[0], mode_cmd->height);
return ERR_PTR(-ENOMEM);
}
ufb = kzalloc(sizeof(*ufb), GFP_KERNEL);
if (ufb == NULL)
return ERR_PTR(-ENOMEM);
ret = udl_framebuffer_init(dev, ufb, mode_cmd, to_udl_bo(obj));
if (ret) {
kfree(ufb);
return ERR_PTR(-EINVAL);
}
return &ufb->base;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dave Airlie | 192 | 99.48% | 2 | 66.67% |
| Ville Syrjälä | 1 | 0.52% | 1 | 33.33% |
| Total | 193 | 100.00% | 3 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dave Airlie | 2140 | 89.46% | 7 | 23.33% |
| Noralf Trönnes | 79 | 3.30% | 1 | 3.33% |
| Daniel Vetter | 48 | 2.01% | 6 | 20.00% |
| Thierry Reding | 48 | 2.01% | 3 | 10.00% |
| Ville Syrjälä | 34 | 1.42% | 5 | 16.67% |
| Archit Taneja | 26 | 1.09% | 1 | 3.33% |
| Fabian Frederick | 6 | 0.25% | 1 | 3.33% |
| David Howells | 4 | 0.17% | 1 | 3.33% |
| David Herrmann | 3 | 0.13% | 2 | 6.67% |
| Chris Wilson | 2 | 0.08% | 1 | 3.33% |
| Konstantin Khlebnikov | 1 | 0.04% | 1 | 3.33% |
| Stefan Christ | 1 | 0.04% | 1 | 3.33% |
| Total | 2392 | 100.00% | 30 | 100.00% |
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