Contributors: 22
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Thomas Zimmermann |
779 |
51.62% |
18 |
39.13% |
| Alan Cox |
596 |
39.50% |
5 |
10.87% |
| Thierry Reding |
31 |
2.05% |
2 |
4.35% |
| Dave Airlie |
21 |
1.39% |
1 |
2.17% |
| Daniel Vetter |
18 |
1.19% |
3 |
6.52% |
| Jing Xiangfeng |
10 |
0.66% |
1 |
2.17% |
| Dave Jiang |
9 |
0.60% |
1 |
2.17% |
| Ville Syrjälä |
8 |
0.53% |
1 |
2.17% |
| Patrik Jakobsson |
7 |
0.46% |
1 |
2.17% |
| Sam Ravnborg |
6 |
0.40% |
1 |
2.17% |
| Dan J Williams |
5 |
0.33% |
1 |
2.17% |
| Suren Baghdasaryan |
4 |
0.27% |
1 |
2.17% |
| Souptick Joarder |
3 |
0.20% |
1 |
2.17% |
| Konstantin Khlebnikov |
2 |
0.13% |
1 |
2.17% |
| Thomas Gleixner |
2 |
0.13% |
1 |
2.17% |
| Archit Taneja |
2 |
0.13% |
1 |
2.17% |
| Kirill A. Shutemov |
1 |
0.07% |
1 |
2.17% |
| Geliang Tang |
1 |
0.07% |
1 |
2.17% |
| Laurent Pinchart |
1 |
0.07% |
1 |
2.17% |
| Daniel Stone |
1 |
0.07% |
1 |
2.17% |
| Zack Rusin |
1 |
0.07% |
1 |
2.17% |
| Stefan Christ |
1 |
0.07% |
1 |
2.17% |
| Total |
1509 |
|
46 |
|
// SPDX-License-Identifier: GPL-2.0-only
/**************************************************************************
* Copyright (c) 2007-2011, Intel Corporation.
* All Rights Reserved.
*
**************************************************************************/
#include <linux/fb.h>
#include <linux/pfn_t.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_to_pfn_t(pfn, PFN_DEV));
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
*/
#define CMAP_TOHW(_val, _width) ((((_val) << (_width)) + 0x7FFF - (_val)) >> 16)
static int psb_fbdev_fb_setcolreg(unsigned int regno,
unsigned int red, unsigned int green,
unsigned int blue, unsigned int transp,
struct fb_info *info)
{
struct drm_fb_helper *fb_helper = info->par;
struct drm_framebuffer *fb = fb_helper->fb;
uint32_t v;
if (!fb)
return -ENOMEM;
if (regno > 255)
return 1;
red = CMAP_TOHW(red, info->var.red.length);
blue = CMAP_TOHW(blue, info->var.blue.length);
green = CMAP_TOHW(green, info->var.green.length);
transp = CMAP_TOHW(transp, info->var.transp.length);
v = (red << info->var.red.offset) |
(green << info->var.green.offset) |
(blue << info->var.blue.offset) |
(transp << info->var.transp.offset);
if (regno < 16) {
switch (fb->format->cpp[0] * 8) {
case 16:
((uint32_t *) info->pseudo_palette)[regno] = v;
break;
case 24:
case 32:
((uint32_t *) info->pseudo_palette)[regno] = v;
break;
}
}
return 0;
}
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;
struct drm_framebuffer *fb = fb_helper->fb;
struct drm_gem_object *obj = fb->obj[0];
drm_fb_helper_fini(fb_helper);
drm_framebuffer_unregister_private(fb);
fb->obj[0] = NULL;
drm_framebuffer_cleanup(fb);
kfree(fb);
drm_gem_object_put(obj);
drm_client_release(&fb_helper->client);
drm_fb_helper_unprepare(fb_helper);
kfree(fb_helper);
}
static const struct fb_ops psb_fbdev_fb_ops = {
.owner = THIS_MODULE,
__FB_DEFAULT_IOMEM_OPS_RDWR,
DRM_FB_HELPER_DEFAULT_OPS,
.fb_setcolreg = psb_fbdev_fb_setcolreg,
__FB_DEFAULT_IOMEM_OPS_DRAW,
.fb_mmap = psb_fbdev_fb_mmap,
.fb_destroy = psb_fbdev_fb_destroy,
};
/*
* struct drm_fb_helper_funcs
*/
static int psb_fbdev_fb_probe(struct drm_fb_helper *fb_helper,
struct drm_fb_helper_surface_size *sizes)
{
struct drm_device *dev = fb_helper->dev;
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
struct pci_dev *pdev = to_pci_dev(dev->dev);
struct fb_info *info;
struct drm_framebuffer *fb;
struct drm_mode_fb_cmd2 mode_cmd = { };
int size;
int ret;
struct psb_gem_object *backing;
struct drm_gem_object *obj;
u32 bpp, depth;
/* No 24-bit packed mode */
if (sizes->surface_bpp == 24) {
sizes->surface_bpp = 32;
sizes->surface_depth = 24;
}
bpp = sizes->surface_bpp;
depth = sizes->surface_depth;
/*
* If the mode does not fit in 32 bit then switch to 16 bit to get
* a console on full resolution. The X mode setting server will
* allocate its own 32-bit GEM framebuffer.
*/
size = ALIGN(sizes->surface_width * DIV_ROUND_UP(bpp, 8), 64) *
sizes->surface_height;
size = ALIGN(size, PAGE_SIZE);
if (size > dev_priv->vram_stolen_size) {
sizes->surface_bpp = 16;
sizes->surface_depth = 16;
}
bpp = sizes->surface_bpp;
depth = sizes->surface_depth;
mode_cmd.width = sizes->surface_width;
mode_cmd.height = sizes->surface_height;
mode_cmd.pitches[0] = ALIGN(mode_cmd.width * DIV_ROUND_UP(bpp, 8), 64);
mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
size = mode_cmd.pitches[0] * mode_cmd.height;
size = ALIGN(size, 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))
return PTR_ERR(backing);
obj = &backing->base;
fb = psb_framebuffer_create(dev, &mode_cmd, obj);
if (IS_ERR(fb)) {
ret = PTR_ERR(fb);
goto err_drm_gem_object_put;
}
fb_helper->fb = fb;
info = drm_fb_helper_alloc_info(fb_helper);
if (IS_ERR(info)) {
ret = PTR_ERR(info);
goto err_drm_framebuffer_unregister_private;
}
info->fbops = &psb_fbdev_fb_ops;
/* Accessed stolen memory directly */
info->screen_base = dev_priv->vram_addr + backing->offset;
info->screen_size = size;
drm_fb_helper_fill_info(info, fb_helper, sizes);
info->fix.smem_start = dev_priv->stolen_base + backing->offset;
info->fix.smem_len = 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", fb->width, fb->height);
return 0;
err_drm_framebuffer_unregister_private:
drm_framebuffer_unregister_private(fb);
fb->obj[0] = NULL;
drm_framebuffer_cleanup(fb);
kfree(fb);
err_drm_gem_object_put:
drm_gem_object_put(obj);
return ret;
}
static const struct drm_fb_helper_funcs psb_fbdev_fb_helper_funcs = {
.fb_probe = psb_fbdev_fb_probe,
};
/*
* struct drm_client_funcs and setup code
*/
static void psb_fbdev_client_unregister(struct drm_client_dev *client)
{
struct drm_fb_helper *fb_helper = drm_fb_helper_from_client(client);
if (fb_helper->info) {
drm_fb_helper_unregister_info(fb_helper);
} else {
drm_fb_helper_unprepare(fb_helper);
drm_client_release(&fb_helper->client);
kfree(fb_helper);
}
}
static int psb_fbdev_client_restore(struct drm_client_dev *client)
{
drm_fb_helper_lastclose(client->dev);
return 0;
}
static int psb_fbdev_client_hotplug(struct drm_client_dev *client)
{
struct drm_fb_helper *fb_helper = drm_fb_helper_from_client(client);
struct drm_device *dev = client->dev;
int ret;
if (dev->fb_helper)
return drm_fb_helper_hotplug_event(dev->fb_helper);
ret = drm_fb_helper_init(dev, fb_helper);
if (ret)
goto err_drm_err;
if (!drm_drv_uses_atomic_modeset(dev))
drm_helper_disable_unused_functions(dev);
ret = drm_fb_helper_initial_config(fb_helper);
if (ret)
goto err_drm_fb_helper_fini;
return 0;
err_drm_fb_helper_fini:
drm_fb_helper_fini(fb_helper);
err_drm_err:
drm_err(dev, "Failed to setup gma500 fbdev emulation (ret=%d)\n", ret);
return ret;
}
static const struct drm_client_funcs psb_fbdev_client_funcs = {
.owner = THIS_MODULE,
.unregister = psb_fbdev_client_unregister,
.restore = psb_fbdev_client_restore,
.hotplug = psb_fbdev_client_hotplug,
};
void psb_fbdev_setup(struct drm_psb_private *dev_priv)
{
struct drm_device *dev = &dev_priv->dev;
struct drm_fb_helper *fb_helper;
int ret;
fb_helper = kzalloc(sizeof(*fb_helper), GFP_KERNEL);
if (!fb_helper)
return;
drm_fb_helper_prepare(dev, fb_helper, 32, &psb_fbdev_fb_helper_funcs);
ret = drm_client_init(dev, &fb_helper->client, "fbdev-gma500", &psb_fbdev_client_funcs);
if (ret) {
drm_err(dev, "Failed to register client: %d\n", ret);
goto err_drm_fb_helper_unprepare;
}
drm_client_register(&fb_helper->client);
return;
err_drm_fb_helper_unprepare:
drm_fb_helper_unprepare(fb_helper);
kfree(fb_helper);
}