mirror of https://gitee.com/openkylin/linux.git
384 lines
8.2 KiB
C
384 lines
8.2 KiB
C
/*
|
|
* Copyright 2010 Matt Turner.
|
|
* Copyright 2012 Red Hat
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General
|
|
* Public License version 2. See the file COPYING in the main
|
|
* directory of this archive for more details.
|
|
*
|
|
* Authors: Matthew Garrett
|
|
* Matt Turner
|
|
* Dave Airlie
|
|
*/
|
|
#include <drm/drmP.h>
|
|
#include <drm/drm_crtc_helper.h>
|
|
#include "mgag200_drv.h"
|
|
|
|
static void mga_user_framebuffer_destroy(struct drm_framebuffer *fb)
|
|
{
|
|
struct mga_framebuffer *mga_fb = to_mga_framebuffer(fb);
|
|
if (mga_fb->obj)
|
|
drm_gem_object_unreference_unlocked(mga_fb->obj);
|
|
drm_framebuffer_cleanup(fb);
|
|
kfree(fb);
|
|
}
|
|
|
|
static const struct drm_framebuffer_funcs mga_fb_funcs = {
|
|
.destroy = mga_user_framebuffer_destroy,
|
|
};
|
|
|
|
int mgag200_framebuffer_init(struct drm_device *dev,
|
|
struct mga_framebuffer *gfb,
|
|
struct drm_mode_fb_cmd2 *mode_cmd,
|
|
struct drm_gem_object *obj)
|
|
{
|
|
int ret;
|
|
|
|
drm_helper_mode_fill_fb_struct(&gfb->base, mode_cmd);
|
|
gfb->obj = obj;
|
|
ret = drm_framebuffer_init(dev, &gfb->base, &mga_fb_funcs);
|
|
if (ret) {
|
|
DRM_ERROR("drm_framebuffer_init failed: %d\n", ret);
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static struct drm_framebuffer *
|
|
mgag200_user_framebuffer_create(struct drm_device *dev,
|
|
struct drm_file *filp,
|
|
struct drm_mode_fb_cmd2 *mode_cmd)
|
|
{
|
|
struct drm_gem_object *obj;
|
|
struct mga_framebuffer *mga_fb;
|
|
int ret;
|
|
|
|
obj = drm_gem_object_lookup(dev, filp, mode_cmd->handles[0]);
|
|
if (obj == NULL)
|
|
return ERR_PTR(-ENOENT);
|
|
|
|
mga_fb = kzalloc(sizeof(*mga_fb), GFP_KERNEL);
|
|
if (!mga_fb) {
|
|
drm_gem_object_unreference_unlocked(obj);
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
|
|
ret = mgag200_framebuffer_init(dev, mga_fb, mode_cmd, obj);
|
|
if (ret) {
|
|
drm_gem_object_unreference_unlocked(obj);
|
|
kfree(mga_fb);
|
|
return ERR_PTR(ret);
|
|
}
|
|
return &mga_fb->base;
|
|
}
|
|
|
|
static const struct drm_mode_config_funcs mga_mode_funcs = {
|
|
.fb_create = mgag200_user_framebuffer_create,
|
|
};
|
|
|
|
/* Unmap the framebuffer from the core and release the memory */
|
|
static void mga_vram_fini(struct mga_device *mdev)
|
|
{
|
|
pci_iounmap(mdev->dev->pdev, mdev->rmmio);
|
|
mdev->rmmio = NULL;
|
|
if (mdev->mc.vram_base)
|
|
release_mem_region(mdev->mc.vram_base, mdev->mc.vram_window);
|
|
}
|
|
|
|
static int mga_probe_vram(struct mga_device *mdev, void __iomem *mem)
|
|
{
|
|
int offset;
|
|
int orig;
|
|
int test1, test2;
|
|
int orig1, orig2;
|
|
|
|
/* Probe */
|
|
orig = ioread16(mem);
|
|
iowrite16(0, mem);
|
|
|
|
for (offset = 0x100000; offset < mdev->mc.vram_window; offset += 0x4000) {
|
|
orig1 = ioread8(mem + offset);
|
|
orig2 = ioread8(mem + offset + 0x100);
|
|
|
|
iowrite16(0xaa55, mem + offset);
|
|
iowrite16(0xaa55, mem + offset + 0x100);
|
|
|
|
test1 = ioread16(mem + offset);
|
|
test2 = ioread16(mem);
|
|
|
|
iowrite16(orig1, mem + offset);
|
|
iowrite16(orig2, mem + offset + 0x100);
|
|
|
|
if (test1 != 0xaa55) {
|
|
break;
|
|
}
|
|
|
|
if (test2) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
iowrite16(orig, mem);
|
|
return offset - 65536;
|
|
}
|
|
|
|
/* Map the framebuffer from the card and configure the core */
|
|
static int mga_vram_init(struct mga_device *mdev)
|
|
{
|
|
void __iomem *mem;
|
|
struct apertures_struct *aper = alloc_apertures(1);
|
|
if (!aper)
|
|
return -ENOMEM;
|
|
|
|
/* BAR 0 is VRAM */
|
|
mdev->mc.vram_base = pci_resource_start(mdev->dev->pdev, 0);
|
|
mdev->mc.vram_window = pci_resource_len(mdev->dev->pdev, 0);
|
|
|
|
aper->ranges[0].base = mdev->mc.vram_base;
|
|
aper->ranges[0].size = mdev->mc.vram_window;
|
|
|
|
remove_conflicting_framebuffers(aper, "mgafb", true);
|
|
kfree(aper);
|
|
|
|
if (!request_mem_region(mdev->mc.vram_base, mdev->mc.vram_window,
|
|
"mgadrmfb_vram")) {
|
|
DRM_ERROR("can't reserve VRAM\n");
|
|
return -ENXIO;
|
|
}
|
|
|
|
mem = pci_iomap(mdev->dev->pdev, 0, 0);
|
|
|
|
mdev->mc.vram_size = mga_probe_vram(mdev, mem);
|
|
|
|
pci_iounmap(mdev->dev->pdev, mem);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mgag200_device_init(struct drm_device *dev,
|
|
uint32_t flags)
|
|
{
|
|
struct mga_device *mdev = dev->dev_private;
|
|
int ret, option;
|
|
|
|
mdev->type = flags;
|
|
|
|
/* Hardcode the number of CRTCs to 1 */
|
|
mdev->num_crtc = 1;
|
|
|
|
pci_read_config_dword(dev->pdev, PCI_MGA_OPTION, &option);
|
|
mdev->has_sdram = !(option & (1 << 14));
|
|
|
|
/* BAR 0 is the framebuffer, BAR 1 contains registers */
|
|
mdev->rmmio_base = pci_resource_start(mdev->dev->pdev, 1);
|
|
mdev->rmmio_size = pci_resource_len(mdev->dev->pdev, 1);
|
|
|
|
if (!request_mem_region(mdev->rmmio_base, mdev->rmmio_size,
|
|
"mgadrmfb_mmio")) {
|
|
DRM_ERROR("can't reserve mmio registers\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
mdev->rmmio = pci_iomap(dev->pdev, 1, 0);
|
|
if (mdev->rmmio == NULL)
|
|
return -ENOMEM;
|
|
|
|
/* stash G200 SE model number for later use */
|
|
if (IS_G200_SE(mdev))
|
|
mdev->reg_1e24 = RREG32(0x1e24);
|
|
|
|
ret = mga_vram_init(mdev);
|
|
if (ret) {
|
|
release_mem_region(mdev->rmmio_base, mdev->rmmio_size);
|
|
return ret;
|
|
}
|
|
|
|
mdev->bpp_shifts[0] = 0;
|
|
mdev->bpp_shifts[1] = 1;
|
|
mdev->bpp_shifts[2] = 0;
|
|
mdev->bpp_shifts[3] = 2;
|
|
return 0;
|
|
}
|
|
|
|
void mgag200_device_fini(struct mga_device *mdev)
|
|
{
|
|
release_mem_region(mdev->rmmio_base, mdev->rmmio_size);
|
|
mga_vram_fini(mdev);
|
|
}
|
|
|
|
/*
|
|
* Functions here will be called by the core once it's bound the driver to
|
|
* a PCI device
|
|
*/
|
|
|
|
|
|
int mgag200_driver_load(struct drm_device *dev, unsigned long flags)
|
|
{
|
|
struct mga_device *mdev;
|
|
int r;
|
|
|
|
mdev = kzalloc(sizeof(struct mga_device), GFP_KERNEL);
|
|
if (mdev == NULL)
|
|
return -ENOMEM;
|
|
dev->dev_private = (void *)mdev;
|
|
mdev->dev = dev;
|
|
|
|
r = mgag200_device_init(dev, flags);
|
|
if (r) {
|
|
dev_err(&dev->pdev->dev, "Fatal error during GPU init: %d\n", r);
|
|
goto out;
|
|
}
|
|
r = mgag200_mm_init(mdev);
|
|
if (r)
|
|
goto out;
|
|
|
|
drm_mode_config_init(dev);
|
|
dev->mode_config.funcs = (void *)&mga_mode_funcs;
|
|
dev->mode_config.min_width = 0;
|
|
dev->mode_config.min_height = 0;
|
|
dev->mode_config.preferred_depth = 24;
|
|
dev->mode_config.prefer_shadow = 1;
|
|
|
|
r = mgag200_modeset_init(mdev);
|
|
if (r)
|
|
dev_err(&dev->pdev->dev, "Fatal error during modeset init: %d\n", r);
|
|
out:
|
|
if (r)
|
|
mgag200_driver_unload(dev);
|
|
return r;
|
|
}
|
|
|
|
int mgag200_driver_unload(struct drm_device *dev)
|
|
{
|
|
struct mga_device *mdev = dev->dev_private;
|
|
|
|
if (mdev == NULL)
|
|
return 0;
|
|
mgag200_modeset_fini(mdev);
|
|
mgag200_fbdev_fini(mdev);
|
|
drm_mode_config_cleanup(dev);
|
|
mgag200_mm_fini(mdev);
|
|
mgag200_device_fini(mdev);
|
|
kfree(mdev);
|
|
dev->dev_private = NULL;
|
|
return 0;
|
|
}
|
|
|
|
int mgag200_gem_create(struct drm_device *dev,
|
|
u32 size, bool iskernel,
|
|
struct drm_gem_object **obj)
|
|
{
|
|
struct mgag200_bo *astbo;
|
|
int ret;
|
|
|
|
*obj = NULL;
|
|
|
|
size = roundup(size, PAGE_SIZE);
|
|
if (size == 0)
|
|
return -EINVAL;
|
|
|
|
ret = mgag200_bo_create(dev, size, 0, 0, &astbo);
|
|
if (ret) {
|
|
if (ret != -ERESTARTSYS)
|
|
DRM_ERROR("failed to allocate GEM object\n");
|
|
return ret;
|
|
}
|
|
*obj = &astbo->gem;
|
|
return 0;
|
|
}
|
|
|
|
int mgag200_dumb_create(struct drm_file *file,
|
|
struct drm_device *dev,
|
|
struct drm_mode_create_dumb *args)
|
|
{
|
|
int ret;
|
|
struct drm_gem_object *gobj;
|
|
u32 handle;
|
|
|
|
args->pitch = args->width * ((args->bpp + 7) / 8);
|
|
args->size = args->pitch * args->height;
|
|
|
|
ret = mgag200_gem_create(dev, args->size, false,
|
|
&gobj);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = drm_gem_handle_create(file, gobj, &handle);
|
|
drm_gem_object_unreference_unlocked(gobj);
|
|
if (ret)
|
|
return ret;
|
|
|
|
args->handle = handle;
|
|
return 0;
|
|
}
|
|
|
|
int mgag200_dumb_destroy(struct drm_file *file,
|
|
struct drm_device *dev,
|
|
uint32_t handle)
|
|
{
|
|
return drm_gem_handle_delete(file, handle);
|
|
}
|
|
|
|
int mgag200_gem_init_object(struct drm_gem_object *obj)
|
|
{
|
|
BUG();
|
|
return 0;
|
|
}
|
|
|
|
void mgag200_bo_unref(struct mgag200_bo **bo)
|
|
{
|
|
struct ttm_buffer_object *tbo;
|
|
|
|
if ((*bo) == NULL)
|
|
return;
|
|
|
|
tbo = &((*bo)->bo);
|
|
ttm_bo_unref(&tbo);
|
|
if (tbo == NULL)
|
|
*bo = NULL;
|
|
|
|
}
|
|
|
|
void mgag200_gem_free_object(struct drm_gem_object *obj)
|
|
{
|
|
struct mgag200_bo *mgag200_bo = gem_to_mga_bo(obj);
|
|
|
|
if (!mgag200_bo)
|
|
return;
|
|
mgag200_bo_unref(&mgag200_bo);
|
|
}
|
|
|
|
|
|
static inline u64 mgag200_bo_mmap_offset(struct mgag200_bo *bo)
|
|
{
|
|
return bo->bo.addr_space_offset;
|
|
}
|
|
|
|
int
|
|
mgag200_dumb_mmap_offset(struct drm_file *file,
|
|
struct drm_device *dev,
|
|
uint32_t handle,
|
|
uint64_t *offset)
|
|
{
|
|
struct drm_gem_object *obj;
|
|
int ret;
|
|
struct mgag200_bo *bo;
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
obj = drm_gem_object_lookup(dev, file, handle);
|
|
if (obj == NULL) {
|
|
ret = -ENOENT;
|
|
goto out_unlock;
|
|
}
|
|
|
|
bo = gem_to_mga_bo(obj);
|
|
*offset = mgag200_bo_mmap_offset(bo);
|
|
|
|
drm_gem_object_unreference(obj);
|
|
ret = 0;
|
|
out_unlock:
|
|
mutex_unlock(&dev->struct_mutex);
|
|
return ret;
|
|
|
|
}
|