diff options
Diffstat (limited to 'drivers/gpu/drm/mgag200/mgag200_main.c')
| -rw-r--r-- | drivers/gpu/drm/mgag200/mgag200_main.c | 381 |
1 files changed, 0 insertions, 381 deletions
diff --git a/drivers/gpu/drm/mgag200/mgag200_main.c b/drivers/gpu/drm/mgag200/mgag200_main.c deleted file mode 100644 index 9fa5685baee0..000000000000 --- a/drivers/gpu/drm/mgag200/mgag200_main.c +++ /dev/null @@ -1,381 +0,0 @@ -/* - * 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, -}; - -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 (!devm_request_mem_region(mdev->dev->dev, 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 (!devm_request_mem_region(mdev->dev->dev, mdev->rmmio_base, mdev->rmmio_size, - "mgadrmfb_mmio")) { - DRM_ERROR("can't reserve mmio registers\n"); - return -ENOMEM; - } - - mdev->rmmio = pcim_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->unique_rev_id = RREG32(0x1e24); - - ret = mga_vram_init(mdev); - if (ret) - return ret; - - mdev->bpp_shifts[0] = 0; - mdev->bpp_shifts[1] = 1; - mdev->bpp_shifts[2] = 0; - mdev->bpp_shifts[3] = 2; - return 0; -} - -/* - * 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 = devm_kzalloc(dev->dev, 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); - return r; - } - 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.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); - goto out; - } - - /* Make small buffers to store a hardware cursor (double buffered icon updates) */ - mgag200_bo_create(dev, roundup(48*64, PAGE_SIZE), 0, 0, - &mdev->cursor.pixels_1); - mgag200_bo_create(dev, roundup(48*64, PAGE_SIZE), 0, 0, - &mdev->cursor.pixels_2); - if (!mdev->cursor.pixels_2 || !mdev->cursor.pixels_1) - goto cursor_nospace; - mdev->cursor.pixels_current = mdev->cursor.pixels_1; - mdev->cursor.pixels_prev = mdev->cursor.pixels_2; - goto cursor_done; - cursor_nospace: - mdev->cursor.pixels_1 = NULL; - mdev->cursor.pixels_2 = NULL; - dev_warn(&dev->pdev->dev, "Could not allocate space for cursors. Not doing hardware cursors.\n"); - cursor_done: - -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); - 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; - -} |