Contributors: 20
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Thomas Zimmermann |
543 |
64.72% |
20 |
45.45% |
| Alan Cox |
251 |
29.92% |
6 |
13.64% |
| Dave Jiang |
9 |
1.07% |
1 |
2.27% |
| Jing Xiangfeng |
5 |
0.60% |
1 |
2.27% |
| Sam Ravnborg |
5 |
0.60% |
1 |
2.27% |
| Suren Baghdasaryan |
4 |
0.48% |
1 |
2.27% |
| Maxime Ripard |
3 |
0.36% |
1 |
2.27% |
| Souptick Joarder |
3 |
0.36% |
1 |
2.27% |
| Daniel Vetter |
3 |
0.36% |
1 |
2.27% |
| Konstantin Khlebnikov |
2 |
0.24% |
1 |
2.27% |
| Thomas Gleixner |
2 |
0.24% |
1 |
2.27% |
| Kirill A. Shutemov |
1 |
0.12% |
1 |
2.27% |
| Laurent Pinchart |
1 |
0.12% |
1 |
2.27% |
| Zack Rusin |
1 |
0.12% |
1 |
2.27% |
| Geliang Tang |
1 |
0.12% |
1 |
2.27% |
| Patrik Jakobsson |
1 |
0.12% |
1 |
2.27% |
| Ville Syrjälä |
1 |
0.12% |
1 |
2.27% |
| Dave Airlie |
1 |
0.12% |
1 |
2.27% |
| Sascha Hauer |
1 |
0.12% |
1 |
2.27% |
| Thierry Reding |
1 |
0.12% |
1 |
2.27% |
| Total |
839 |
|
44 |
|
// SPDX-License-Identifier: GPL-2.0-only
/**************************************************************************
* Copyright (c) 2007-2011, Intel Corporation.
* All Rights Reserved.
*
**************************************************************************/
#include <linux/fb.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_drv.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_framebuffer.h>
#include "gem.h"
#include "psb_drv.h"
/*
* VM area struct
*/
static vm_fault_t psb_fbdev_vm_fault(struct vm_fault *vmf)
{
struct vm_area_struct *vma = vmf->vma;
struct fb_info *info = vma->vm_private_data;
unsigned long address = vmf->address - (vmf->pgoff << PAGE_SHIFT);
unsigned long pfn = info->fix.smem_start >> PAGE_SHIFT;
vm_fault_t err = VM_FAULT_SIGBUS;
unsigned long page_num = vma_pages(vma);
unsigned long i;
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
for (i = 0; i < page_num; ++i) {
err = vmf_insert_mixed(vma, address, pfn);
if (unlikely(err & VM_FAULT_ERROR))
break;
address += PAGE_SIZE;
++pfn;
}
return err;
}
static const struct vm_operations_struct psb_fbdev_vm_ops = {
.fault = psb_fbdev_vm_fault,
};
/*
* struct fb_ops
*/
static int psb_fbdev_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
{
if (vma->vm_pgoff != 0)
return -EINVAL;
if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
return -EINVAL;
/*
* If this is a GEM object then info->screen_base is the virtual
* kernel remapping of the object. FIXME: Review if this is
* suitable for our mmap work
*/
vma->vm_ops = &psb_fbdev_vm_ops;
vma->vm_private_data = info;
vm_flags_set(vma, VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP);
return 0;
}
static void psb_fbdev_fb_destroy(struct fb_info *info)
{
struct drm_fb_helper *fb_helper = info->par;
drm_fb_helper_fini(fb_helper);
drm_client_buffer_delete(fb_helper->buffer);
drm_client_release(&fb_helper->client);
}
static const struct fb_ops psb_fbdev_fb_ops = {
.owner = THIS_MODULE,
__FB_DEFAULT_IOMEM_OPS_RDWR,
DRM_FB_HELPER_DEFAULT_OPS,
__FB_DEFAULT_IOMEM_OPS_DRAW,
.fb_mmap = psb_fbdev_fb_mmap,
.fb_destroy = psb_fbdev_fb_destroy,
};
static const struct drm_fb_helper_funcs psb_fbdev_fb_helper_funcs = {
};
/*
* struct drm_driver
*/
int psb_fbdev_driver_fbdev_probe(struct drm_fb_helper *fb_helper,
struct drm_fb_helper_surface_size *sizes)
{
struct drm_client_dev *client = &fb_helper->client;
struct drm_device *dev = client->dev;
struct drm_file *file = client->file;
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
struct pci_dev *pdev = to_pci_dev(dev->dev);
struct fb_info *info = fb_helper->info;
u32 fourcc, pitch;
u64 size;
const struct drm_format_info *format;
struct drm_client_buffer *buffer;
struct psb_gem_object *backing;
struct drm_gem_object *obj;
u32 handle;
int ret;
/* No 24-bit packed mode */
if (sizes->surface_bpp == 24) {
sizes->surface_bpp = 32;
sizes->surface_depth = 24;
}
try_psb_gem_create:
fourcc = drm_mode_legacy_fb_format(sizes->surface_bpp, sizes->surface_depth);
format = drm_get_format_info(dev, fourcc, DRM_FORMAT_MOD_LINEAR);
pitch = ALIGN(drm_format_info_min_pitch(format, 0, sizes->surface_width), SZ_64);
size = ALIGN(pitch * sizes->surface_height, PAGE_SIZE);
/* Allocate the framebuffer in the GTT with stolen page backing */
backing = psb_gem_create(dev, size, "fb", true, PAGE_SIZE);
if (IS_ERR(backing)) {
ret = PTR_ERR(backing);
if (ret == -EBUSY && sizes->surface_bpp > 16) {
/*
* If the mode does not fit in 32 bit then switch to 16 bit to
* get a console on full resolution. User-space compositors will
* allocate their own 32-bit framebuffers.
*/
sizes->surface_bpp = 16;
sizes->surface_depth = 16;
goto try_psb_gem_create;
}
return ret;
}
obj = &backing->base;
ret = drm_gem_handle_create(file, obj, &handle);
if (ret)
goto err_drm_gem_object_put;
buffer = drm_client_buffer_create(client, sizes->surface_width, sizes->surface_height,
fourcc, handle, pitch);
if (IS_ERR(buffer)) {
ret = PTR_ERR(buffer);
goto err_drm_gem_handle_delete;
}
fb_helper->funcs = &psb_fbdev_fb_helper_funcs;
fb_helper->buffer = buffer;
fb_helper->fb = buffer->fb;
info->fbops = &psb_fbdev_fb_ops;
/* Accessed stolen memory directly */
info->screen_base = dev_priv->vram_addr + backing->offset;
info->screen_size = obj->size;
drm_fb_helper_fill_info(info, fb_helper, sizes);
info->fix.smem_start = dev_priv->stolen_base + backing->offset;
info->fix.smem_len = obj->size;
info->fix.ywrapstep = 0;
info->fix.ypanstep = 0;
info->fix.mmio_start = pci_resource_start(pdev, 0);
info->fix.mmio_len = pci_resource_len(pdev, 0);
fb_memset_io(info->screen_base, 0, info->screen_size);
/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
dev_dbg(dev->dev, "allocated %dx%d fb\n", buffer->fb->width, buffer->fb->height);
/* The handle is only needed for creating the framebuffer.*/
drm_gem_handle_delete(file, handle);
/* The framebuffer still holds a references on the GEM object. */
drm_gem_object_put(obj);
return 0;
err_drm_gem_handle_delete:
drm_gem_handle_delete(file, handle);
err_drm_gem_object_put:
drm_gem_object_put(obj);
return ret;
}