Contributors: 30
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Alan Cox |
1840 |
76.92% |
10 |
14.29% |
| Thomas Zimmermann |
171 |
7.15% |
9 |
12.86% |
| Patrik Jakobsson |
46 |
1.92% |
10 |
14.29% |
| Thierry Reding |
43 |
1.80% |
3 |
4.29% |
| Dave Airlie |
38 |
1.59% |
1 |
1.43% |
| Laurent Pinchart |
30 |
1.25% |
2 |
2.86% |
| Daniel Stone |
28 |
1.17% |
1 |
1.43% |
| Daniel Vetter |
23 |
0.96% |
5 |
7.14% |
| Jing Xiangfeng |
22 |
0.92% |
1 |
1.43% |
| Ville Syrjälä |
22 |
0.92% |
5 |
7.14% |
| Paul Kocialkowski |
21 |
0.88% |
1 |
1.43% |
| Sam Ravnborg |
17 |
0.71% |
1 |
1.43% |
| Yakui Zhao |
14 |
0.59% |
1 |
1.43% |
| Archit Taneja |
13 |
0.54% |
1 |
1.43% |
| Dave Jiang |
9 |
0.38% |
1 |
1.43% |
| Kirill A. Shutemov |
9 |
0.38% |
3 |
4.29% |
| Souptick Joarder |
8 |
0.33% |
1 |
1.43% |
| Yoichi Yuasa |
8 |
0.33% |
1 |
1.43% |
| Dan J Williams |
7 |
0.29% |
1 |
1.43% |
| Sascha Hauer |
5 |
0.21% |
2 |
2.86% |
| Lee Jones |
3 |
0.13% |
1 |
1.43% |
| Shyam Saini |
3 |
0.13% |
1 |
1.43% |
| Maxime Ripard |
3 |
0.13% |
1 |
1.43% |
| Thomas Gleixner |
2 |
0.08% |
1 |
1.43% |
| Konstantin Khlebnikov |
2 |
0.08% |
1 |
1.43% |
| Noralf Trönnes |
1 |
0.04% |
1 |
1.43% |
| Jan Kara |
1 |
0.04% |
1 |
1.43% |
| Emil Velikov |
1 |
0.04% |
1 |
1.43% |
| Rikard Falkeborn |
1 |
0.04% |
1 |
1.43% |
| Stefan Christ |
1 |
0.04% |
1 |
1.43% |
| Total |
2392 |
|
70 |
|
// SPDX-License-Identifier: GPL-2.0-only
/**************************************************************************
* Copyright (c) 2007-2011, Intel Corporation.
* All Rights Reserved.
*
**************************************************************************/
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/pfn_t.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/tty.h>
#include <drm/drm.h>
#include <drm/drm_crtc.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include "framebuffer.h"
#include "gem.h"
#include "psb_drv.h"
#include "psb_intel_drv.h"
#include "psb_intel_reg.h"
static const struct drm_framebuffer_funcs psb_fb_funcs = {
.destroy = drm_gem_fb_destroy,
.create_handle = drm_gem_fb_create_handle,
};
#define CMAP_TOHW(_val, _width) ((((_val) << (_width)) + 0x7FFF - (_val)) >> 16)
static int psbfb_setcolreg(unsigned regno, unsigned red, unsigned green,
unsigned blue, unsigned 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 vm_fault_t psbfb_vm_fault(struct vm_fault *vmf)
{
struct vm_area_struct *vma = vmf->vma;
struct drm_framebuffer *fb = vma->vm_private_data;
struct drm_device *dev = fb->dev;
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
struct psb_gem_object *pobj = to_psb_gem_object(fb->obj[0]);
int page_num;
int i;
unsigned long address;
vm_fault_t ret = VM_FAULT_SIGBUS;
unsigned long pfn;
unsigned long phys_addr = (unsigned long)dev_priv->stolen_base + pobj->offset;
page_num = vma_pages(vma);
address = vmf->address - (vmf->pgoff << PAGE_SHIFT);
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
for (i = 0; i < page_num; i++) {
pfn = (phys_addr >> PAGE_SHIFT);
ret = vmf_insert_mixed(vma, address,
__pfn_to_pfn_t(pfn, PFN_DEV));
if (unlikely(ret & VM_FAULT_ERROR))
break;
address += PAGE_SIZE;
phys_addr += PAGE_SIZE;
}
return ret;
}
static void psbfb_vm_open(struct vm_area_struct *vma)
{
}
static void psbfb_vm_close(struct vm_area_struct *vma)
{
}
static const struct vm_operations_struct psbfb_vm_ops = {
.fault = psbfb_vm_fault,
.open = psbfb_vm_open,
.close = psbfb_vm_close
};
static int psbfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
{
struct drm_fb_helper *fb_helper = info->par;
struct drm_framebuffer *fb = fb_helper->fb;
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 = &psbfb_vm_ops;
vma->vm_private_data = (void *)fb;
vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP;
return 0;
}
static const struct fb_ops psbfb_unaccel_ops = {
.owner = THIS_MODULE,
DRM_FB_HELPER_DEFAULT_OPS,
.fb_setcolreg = psbfb_setcolreg,
.fb_fillrect = drm_fb_helper_cfb_fillrect,
.fb_copyarea = drm_fb_helper_cfb_copyarea,
.fb_imageblit = drm_fb_helper_cfb_imageblit,
.fb_mmap = psbfb_mmap,
};
/**
* psb_framebuffer_init - initialize a framebuffer
* @dev: our DRM device
* @fb: framebuffer to set up
* @mode_cmd: mode description
* @obj: backing object
*
* Configure and fill in the boilerplate for our frame buffer. Return
* 0 on success or an error code if we fail.
*/
static int psb_framebuffer_init(struct drm_device *dev,
struct drm_framebuffer *fb,
const struct drm_mode_fb_cmd2 *mode_cmd,
struct drm_gem_object *obj)
{
const struct drm_format_info *info;
int ret;
/*
* Reject unknown formats, YUV formats, and formats with more than
* 4 bytes per pixel.
*/
info = drm_get_format_info(dev, mode_cmd);
if (!info || !info->depth || info->cpp[0] > 4)
return -EINVAL;
if (mode_cmd->pitches[0] & 63)
return -EINVAL;
drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
fb->obj[0] = obj;
ret = drm_framebuffer_init(dev, fb, &psb_fb_funcs);
if (ret) {
dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
return ret;
}
return 0;
}
/**
* psb_framebuffer_create - create a framebuffer backed by gt
* @dev: our DRM device
* @mode_cmd: the description of the requested mode
* @obj: the backing object
*
* Create a framebuffer object backed by the gt, and fill in the
* boilerplate required
*
* TODO: review object references
*/
static struct drm_framebuffer *psb_framebuffer_create
(struct drm_device *dev,
const struct drm_mode_fb_cmd2 *mode_cmd,
struct drm_gem_object *obj)
{
struct drm_framebuffer *fb;
int ret;
fb = kzalloc(sizeof(*fb), GFP_KERNEL);
if (!fb)
return ERR_PTR(-ENOMEM);
ret = psb_framebuffer_init(dev, fb, mode_cmd, obj);
if (ret) {
kfree(fb);
return ERR_PTR(ret);
}
return fb;
}
/**
* psbfb_create - create a framebuffer
* @fb_helper: the framebuffer helper
* @sizes: specification of the layout
*
* Create a framebuffer to the specifications provided
*/
static int psbfb_create(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;
mode_cmd.width = sizes->surface_width;
mode_cmd.height = sizes->surface_height;
bpp = sizes->surface_bpp;
depth = sizes->surface_depth;
/* No 24bit packed */
if (bpp == 24)
bpp = 32;
mode_cmd.pitches[0] = ALIGN(mode_cmd.width * DIV_ROUND_UP(bpp, 8), 64);
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;
memset(dev_priv->vram_addr + backing->offset, 0, size);
info = drm_fb_helper_alloc_fbi(fb_helper);
if (IS_ERR(info)) {
ret = PTR_ERR(info);
goto err_drm_gem_object_put;
}
mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
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->fbops = &psbfb_unaccel_ops;
info->fix.smem_start = dev->mode_config.fb_base;
info->fix.smem_len = size;
info->fix.ywrapstep = 0;
info->fix.ypanstep = 0;
/* Accessed stolen memory directly */
info->screen_base = dev_priv->vram_addr + backing->offset;
info->screen_size = size;
if (dev_priv->gtt.stolen_size) {
info->apertures->ranges[0].base = dev->mode_config.fb_base;
info->apertures->ranges[0].size = dev_priv->gtt.stolen_size;
}
drm_fb_helper_fill_info(info, fb_helper, sizes);
info->fix.mmio_start = pci_resource_start(pdev, 0);
info->fix.mmio_len = pci_resource_len(pdev, 0);
/* 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_gem_object_put:
drm_gem_object_put(obj);
return ret;
}
/**
* psb_user_framebuffer_create - create framebuffer
* @dev: our DRM device
* @filp: client file
* @cmd: mode request
*
* Create a new framebuffer backed by a userspace GEM object
*/
static struct drm_framebuffer *psb_user_framebuffer_create
(struct drm_device *dev, struct drm_file *filp,
const struct drm_mode_fb_cmd2 *cmd)
{
struct drm_gem_object *obj;
struct drm_framebuffer *fb;
/*
* Find the GEM object and thus the gtt range object that is
* to back this space
*/
obj = drm_gem_object_lookup(filp, cmd->handles[0]);
if (obj == NULL)
return ERR_PTR(-ENOENT);
/* Let the core code do all the work */
fb = psb_framebuffer_create(dev, cmd, obj);
if (IS_ERR(fb))
drm_gem_object_put(obj);
return fb;
}
static int psbfb_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);
unsigned int fb_size;
int bytespp;
bytespp = sizes->surface_bpp / 8;
if (bytespp == 3) /* no 24bit packed */
bytespp = 4;
/* If the mode will not fit in 32bit then switch to 16bit to get
a console on full resolution. The X mode setting server will
allocate its own 32bit GEM framebuffer */
fb_size = ALIGN(sizes->surface_width * bytespp, 64) *
sizes->surface_height;
fb_size = ALIGN(fb_size, PAGE_SIZE);
if (fb_size > dev_priv->vram_stolen_size) {
sizes->surface_bpp = 16;
sizes->surface_depth = 16;
}
return psbfb_create(fb_helper, sizes);
}
static const struct drm_fb_helper_funcs psb_fb_helper_funcs = {
.fb_probe = psbfb_probe,
};
static int psb_fbdev_destroy(struct drm_device *dev,
struct drm_fb_helper *fb_helper)
{
struct drm_framebuffer *fb = fb_helper->fb;
drm_fb_helper_unregister_fbi(fb_helper);
drm_fb_helper_fini(fb_helper);
drm_framebuffer_unregister_private(fb);
drm_framebuffer_cleanup(fb);
if (fb->obj[0])
drm_gem_object_put(fb->obj[0]);
kfree(fb);
return 0;
}
int psb_fbdev_init(struct drm_device *dev)
{
struct drm_fb_helper *fb_helper;
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
int ret;
fb_helper = kzalloc(sizeof(*fb_helper), GFP_KERNEL);
if (!fb_helper) {
dev_err(dev->dev, "no memory\n");
return -ENOMEM;
}
dev_priv->fb_helper = fb_helper;
drm_fb_helper_prepare(dev, fb_helper, &psb_fb_helper_funcs);
ret = drm_fb_helper_init(dev, fb_helper);
if (ret)
goto free;
/* disable all the possible outputs/crtcs before entering KMS mode */
drm_helper_disable_unused_functions(dev);
ret = drm_fb_helper_initial_config(fb_helper, 32);
if (ret)
goto fini;
return 0;
fini:
drm_fb_helper_fini(fb_helper);
free:
kfree(fb_helper);
return ret;
}
static void psb_fbdev_fini(struct drm_device *dev)
{
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
if (!dev_priv->fb_helper)
return;
psb_fbdev_destroy(dev, dev_priv->fb_helper);
kfree(dev_priv->fb_helper);
dev_priv->fb_helper = NULL;
}
static const struct drm_mode_config_funcs psb_mode_funcs = {
.fb_create = psb_user_framebuffer_create,
.output_poll_changed = drm_fb_helper_output_poll_changed,
};
static void psb_setup_outputs(struct drm_device *dev)
{
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
struct drm_connector_list_iter conn_iter;
struct drm_connector *connector;
drm_mode_create_scaling_mode_property(dev);
/* It is ok for this to fail - we just don't get backlight control */
if (!dev_priv->backlight_property)
dev_priv->backlight_property = drm_property_create_range(dev, 0,
"backlight", 0, 100);
dev_priv->ops->output_init(dev);
drm_connector_list_iter_begin(dev, &conn_iter);
drm_for_each_connector_iter(connector, &conn_iter) {
struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
struct drm_encoder *encoder = &gma_encoder->base;
int crtc_mask = 0, clone_mask = 0;
/* valid crtcs */
switch (gma_encoder->type) {
case INTEL_OUTPUT_ANALOG:
crtc_mask = (1 << 0);
clone_mask = (1 << INTEL_OUTPUT_ANALOG);
break;
case INTEL_OUTPUT_SDVO:
crtc_mask = dev_priv->ops->sdvo_mask;
clone_mask = 0;
break;
case INTEL_OUTPUT_LVDS:
crtc_mask = dev_priv->ops->lvds_mask;
clone_mask = 0;
break;
case INTEL_OUTPUT_MIPI:
crtc_mask = (1 << 0);
clone_mask = 0;
break;
case INTEL_OUTPUT_MIPI2:
crtc_mask = (1 << 2);
clone_mask = 0;
break;
case INTEL_OUTPUT_HDMI:
crtc_mask = dev_priv->ops->hdmi_mask;
clone_mask = (1 << INTEL_OUTPUT_HDMI);
break;
case INTEL_OUTPUT_DISPLAYPORT:
crtc_mask = (1 << 0) | (1 << 1);
clone_mask = 0;
break;
case INTEL_OUTPUT_EDP:
crtc_mask = (1 << 1);
clone_mask = 0;
}
encoder->possible_crtcs = crtc_mask;
encoder->possible_clones =
gma_connector_clones(dev, clone_mask);
}
drm_connector_list_iter_end(&conn_iter);
}
void psb_modeset_init(struct drm_device *dev)
{
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
struct pci_dev *pdev = to_pci_dev(dev->dev);
int i;
if (drmm_mode_config_init(dev))
return;
dev->mode_config.min_width = 0;
dev->mode_config.min_height = 0;
dev->mode_config.funcs = &psb_mode_funcs;
/* set memory base */
/* Oaktrail and Poulsbo should use BAR 2*/
pci_read_config_dword(pdev, PSB_BSM, (u32 *)&(dev->mode_config.fb_base));
/* num pipes is 2 for PSB but 1 for Mrst */
for (i = 0; i < dev_priv->num_pipe; i++)
psb_intel_crtc_init(dev, i, mode_dev);
dev->mode_config.max_width = 4096;
dev->mode_config.max_height = 4096;
psb_setup_outputs(dev);
if (dev_priv->ops->errata)
dev_priv->ops->errata(dev);
dev_priv->modeset = true;
}
void psb_modeset_cleanup(struct drm_device *dev)
{
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
if (dev_priv->modeset) {
drm_kms_helper_poll_fini(dev);
psb_fbdev_fini(dev);
}
}