diff options
Diffstat (limited to 'drivers/gpu/drm/xe/display/xe_initial_plane.c')
| -rw-r--r-- | drivers/gpu/drm/xe/display/xe_initial_plane.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/display/xe_initial_plane.c b/drivers/gpu/drm/xe/display/xe_initial_plane.c new file mode 100644 index 000000000000..4cfeafcc158d --- /dev/null +++ b/drivers/gpu/drm/xe/display/xe_initial_plane.c @@ -0,0 +1,189 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright © 2021 Intel Corporation + */ + +/* for ioread64 */ +#include <linux/io-64-nonatomic-lo-hi.h> + +#include <drm/intel/display_parent_interface.h> + +#include "regs/xe_gtt_defs.h" +#include "xe_ggtt.h" +#include "xe_mmio.h" + +#include "i915_vma.h" +#include "intel_crtc.h" +#include "intel_display_regs.h" +#include "intel_display_types.h" +#include "intel_fb.h" +#include "intel_fb_pin.h" +#include "xe_bo.h" +#include "xe_vram_types.h" +#include "xe_wa.h" + +#include <generated/xe_device_wa_oob.h> + +/* Early xe has no irq */ +static void xe_initial_plane_vblank_wait(struct drm_crtc *_crtc) +{ + struct intel_crtc *crtc = to_intel_crtc(_crtc); + struct xe_device *xe = to_xe_device(crtc->base.dev); + struct xe_reg pipe_frmtmstmp = XE_REG(i915_mmio_reg_offset(PIPE_FRMTMSTMP(crtc->pipe))); + u32 timestamp; + int ret; + + timestamp = xe_mmio_read32(xe_root_tile_mmio(xe), pipe_frmtmstmp); + + ret = xe_mmio_wait32_not(xe_root_tile_mmio(xe), pipe_frmtmstmp, ~0U, timestamp, 40000U, ×tamp, false); + if (ret < 0) + drm_warn(&xe->drm, "waiting for early vblank failed with %i\n", ret); +} + +static struct xe_bo * +initial_plane_bo(struct xe_device *xe, + struct intel_initial_plane_config *plane_config) +{ + struct xe_tile *tile0 = xe_device_get_root_tile(xe); + struct xe_bo *bo; + resource_size_t phys_base; + u32 base, size, flags; + u64 page_size = xe->info.vram_flags & XE_VRAM_FLAGS_NEED64K ? SZ_64K : SZ_4K; + + if (plane_config->size == 0) + return NULL; + + flags = XE_BO_FLAG_SCANOUT | XE_BO_FLAG_GGTT; + + base = round_down(plane_config->base, page_size); + if (IS_DGFX(xe)) { + u64 pte = xe_ggtt_read_pte(tile0->mem.ggtt, base); + + if (!(pte & XE_GGTT_PTE_DM)) { + drm_err(&xe->drm, + "Initial plane programming missing DM bit\n"); + return NULL; + } + + phys_base = pte & ~(page_size - 1); + flags |= XE_BO_FLAG_VRAM0; + + /* + * We don't currently expect this to ever be placed in the + * stolen portion. + */ + if (phys_base >= xe_vram_region_usable_size(tile0->mem.vram)) { + drm_err(&xe->drm, + "Initial plane programming using invalid range, phys_base=%pa\n", + &phys_base); + return NULL; + } + + drm_dbg(&xe->drm, + "Using phys_base=%pa, based on initial plane programming\n", + &phys_base); + } else { + struct ttm_resource_manager *stolen = ttm_manager_type(&xe->ttm, XE_PL_STOLEN); + + if (!stolen) + return NULL; + phys_base = base; + flags |= XE_BO_FLAG_STOLEN; + + if (XE_DEVICE_WA(xe, 22019338487_display)) + return NULL; + + /* + * If the FB is too big, just don't use it since fbdev is not very + * important and we should probably use that space with FBC or other + * features. + */ + if (IS_ENABLED(CONFIG_FRAMEBUFFER_CONSOLE) && + plane_config->size * 2 >> PAGE_SHIFT >= stolen->size) + return NULL; + } + + size = round_up(plane_config->base + plane_config->size, + page_size); + size -= base; + + bo = xe_bo_create_pin_map_at_novm(xe, tile0, size, phys_base, + ttm_bo_type_kernel, flags, 0, false); + if (IS_ERR(bo)) { + drm_dbg(&xe->drm, + "Failed to create bo phys_base=%pa size %u with flags %x: %li\n", + &phys_base, size, flags, PTR_ERR(bo)); + return NULL; + } + + return bo; +} + +static struct drm_gem_object * +xe_alloc_initial_plane_obj(struct drm_device *drm, + struct intel_initial_plane_config *plane_config) +{ + struct xe_device *xe = to_xe_device(drm); + struct drm_mode_fb_cmd2 mode_cmd = { 0 }; + struct drm_framebuffer *fb = &plane_config->fb->base; + struct xe_bo *bo; + + mode_cmd.pixel_format = fb->format->format; + mode_cmd.width = fb->width; + mode_cmd.height = fb->height; + mode_cmd.pitches[0] = fb->pitches[0]; + mode_cmd.modifier[0] = fb->modifier; + mode_cmd.flags = DRM_MODE_FB_MODIFIERS; + + bo = initial_plane_bo(xe, plane_config); + if (!bo) + return NULL; + + if (intel_framebuffer_init(to_intel_framebuffer(fb), + &bo->ttm.base, fb->format, &mode_cmd)) { + drm_dbg_kms(&xe->drm, "intel fb init failed\n"); + goto err_bo; + } + /* Reference handed over to fb */ + xe_bo_put(bo); + + return &bo->ttm.base; + +err_bo: + xe_bo_unpin_map_no_vm(bo); + return NULL; +} + +static int +xe_initial_plane_setup(struct drm_plane_state *_plane_state, + struct intel_initial_plane_config *plane_config, + struct drm_framebuffer *fb, + struct i915_vma *_unused) +{ + struct intel_plane_state *plane_state = to_intel_plane_state(_plane_state); + struct i915_vma *vma; + + vma = intel_fb_pin_to_ggtt(fb, &plane_state->view.gtt, + 0, 0, 0, false, &plane_state->flags); + if (IS_ERR(vma)) + return PTR_ERR(vma); + + plane_state->ggtt_vma = vma; + + plane_state->surf = i915_ggtt_offset(plane_state->ggtt_vma); + + plane_config->vma = vma; + + return 0; +} + +static void xe_plane_config_fini(struct intel_initial_plane_config *plane_config) +{ +} + +const struct intel_display_initial_plane_interface xe_display_initial_plane_interface = { + .vblank_wait = xe_initial_plane_vblank_wait, + .alloc_obj = xe_alloc_initial_plane_obj, + .setup = xe_initial_plane_setup, + .config_fini = xe_plane_config_fini, +}; |