1 files changed, 0 insertions, 402 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c b/drivers/gpu/drm/i915/i915_gem_stolen.c
deleted file mode 100644
index 982d4732cecf..000000000000
--- a/drivers/gpu/drm/i915/i915_gem_stolen.c
+++ /dev/null
@@ -1,402 +0,0 @@
-/*
- * Copyright © 2008-2012 Intel Corporation
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- *
- * Authors:
- *    Eric Anholt <eric@anholt.net>
- *    Chris Wilson <chris@chris-wilson.co.uk>
- *
- */
-
-#include <drm/drmP.h>
-#include <drm/i915_drm.h>
-#include "i915_drv.h"
-
-/*
- * The BIOS typically reserves some of the system's memory for the exclusive
- * use of the integrated graphics. This memory is no longer available for
- * use by the OS and so the user finds that his system has less memory
- * available than he put in. We refer to this memory as stolen.
- *
- * The BIOS will allocate its framebuffer from the stolen memory. Our
- * goal is try to reuse that object for our own fbcon which must always
- * be available for panics. Anything else we can reuse the stolen memory
- * for is a boon.
- */
-
-static unsigned long i915_stolen_to_physical(struct drm_device *dev)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct pci_dev *pdev = dev_priv->bridge_dev;
-	u32 base;
-
-	/* On the machines I have tested the Graphics Base of Stolen Memory
-	 * is unreliable, so on those compute the base by subtracting the
-	 * stolen memory from the Top of Low Usable DRAM which is where the
-	 * BIOS places the graphics stolen memory.
-	 *
-	 * On gen2, the layout is slightly different with the Graphics Segment
-	 * immediately following Top of Memory (or Top of Usable DRAM). Note
-	 * it appears that TOUD is only reported by 865g, so we just use the
-	 * top of memory as determined by the e820 probe.
-	 *
-	 * XXX gen2 requires an unavailable symbol and 945gm fails with
-	 * its value of TOLUD.
-	 */
-	base = 0;
-	if (IS_VALLEYVIEW(dev)) {
-		pci_read_config_dword(dev->pdev, 0x5c, &base);
-		base &= ~((1<<20) - 1);
-	} else if (INTEL_INFO(dev)->gen >= 6) {
-		/* Read Base Data of Stolen Memory Register (BDSM) directly.
-		 * Note that there is also a MCHBAR miror at 0x1080c0 or
-		 * we could use device 2:0x5c instead.
-		*/
-		pci_read_config_dword(pdev, 0xB0, &base);
-		base &= ~4095; /* lower bits used for locking register */
-	} else if (INTEL_INFO(dev)->gen > 3 || IS_G33(dev)) {
-		/* Read Graphics Base of Stolen Memory directly */
-		pci_read_config_dword(pdev, 0xA4, &base);
-#if 0
-	} else if (IS_GEN3(dev)) {
-		u8 val;
-		/* Stolen is immediately below Top of Low Usable DRAM */
-		pci_read_config_byte(pdev, 0x9c, &val);
-		base = val >> 3 << 27;
-		base -= dev_priv->mm.gtt->stolen_size;
-	} else {
-		/* Stolen is immediately above Top of Memory */
-		base = max_low_pfn_mapped << PAGE_SHIFT;
-#endif
-	}
-
-	return base;
-}
-
-static int i915_setup_compression(struct drm_device *dev, int size)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct drm_mm_node *compressed_fb, *uninitialized_var(compressed_llb);
-
-	/* Try to over-allocate to reduce reallocations and fragmentation */
-	compressed_fb = drm_mm_search_free(&dev_priv->mm.stolen,
-					   size <<= 1, 4096, 0);
-	if (!compressed_fb)
-		compressed_fb = drm_mm_search_free(&dev_priv->mm.stolen,
-						   size >>= 1, 4096, 0);
-	if (compressed_fb)
-		compressed_fb = drm_mm_get_block(compressed_fb, size, 4096);
-	if (!compressed_fb)
-		goto err;
-
-	if (HAS_PCH_SPLIT(dev))
-		I915_WRITE(ILK_DPFC_CB_BASE, compressed_fb->start);
-	else if (IS_GM45(dev)) {
-		I915_WRITE(DPFC_CB_BASE, compressed_fb->start);
-	} else {
-		compressed_llb = drm_mm_search_free(&dev_priv->mm.stolen,
-						    4096, 4096, 0);
-		if (compressed_llb)
-			compressed_llb = drm_mm_get_block(compressed_llb,
-							  4096, 4096);
-		if (!compressed_llb)
-			goto err_fb;
-
-		dev_priv->compressed_llb = compressed_llb;
-
-		I915_WRITE(FBC_CFB_BASE,
-			   dev_priv->mm.stolen_base + compressed_fb->start);
-		I915_WRITE(FBC_LL_BASE,
-			   dev_priv->mm.stolen_base + compressed_llb->start);
-	}
-
-	dev_priv->compressed_fb = compressed_fb;
-	dev_priv->cfb_size = size;
-
-	DRM_DEBUG_KMS("reserved %d bytes of contiguous stolen space for FBC\n",
-		      size);
-
-	return 0;
-
-err_fb:
-	drm_mm_put_block(compressed_fb);
-err:
-	pr_info_once("drm: not enough stolen space for compressed buffer (need %d more bytes), disabling. Hint: you may be able to increase stolen memory size in the BIOS to avoid this.\n", size);
-	return -ENOSPC;
-}
-
-int i915_gem_stolen_setup_compression(struct drm_device *dev, int size)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-
-	if (!drm_mm_initialized(&dev_priv->mm.stolen))
-		return -ENODEV;
-
-	if (size < dev_priv->cfb_size)
-		return 0;
-
-	/* Release any current block */
-	i915_gem_stolen_cleanup_compression(dev);
-
-	return i915_setup_compression(dev, size);
-}
-
-void i915_gem_stolen_cleanup_compression(struct drm_device *dev)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-
-	if (dev_priv->cfb_size == 0)
-		return;
-
-	if (dev_priv->compressed_fb)
-		drm_mm_put_block(dev_priv->compressed_fb);
-
-	if (dev_priv->compressed_llb)
-		drm_mm_put_block(dev_priv->compressed_llb);
-
-	dev_priv->cfb_size = 0;
-}
-
-void i915_gem_cleanup_stolen(struct drm_device *dev)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-
-	if (!drm_mm_initialized(&dev_priv->mm.stolen))
-		return;
-
-	i915_gem_stolen_cleanup_compression(dev);
-	drm_mm_takedown(&dev_priv->mm.stolen);
-}
-
-int i915_gem_init_stolen(struct drm_device *dev)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	int bios_reserved = 0;
-
-	dev_priv->mm.stolen_base = i915_stolen_to_physical(dev);
-	if (dev_priv->mm.stolen_base == 0)
-		return 0;
-
-	DRM_DEBUG_KMS("found %zd bytes of stolen memory at %08lx\n",
-		      dev_priv->gtt.stolen_size, dev_priv->mm.stolen_base);
-
-	if (IS_VALLEYVIEW(dev))
-		bios_reserved = 1024*1024; /* top 1M on VLV/BYT */
-
-	/* Basic memrange allocator for stolen space */
-	drm_mm_init(&dev_priv->mm.stolen, 0, dev_priv->gtt.stolen_size -
-		    bios_reserved);
-
-	return 0;
-}
-
-static struct sg_table *
-i915_pages_create_for_stolen(struct drm_device *dev,
-			     u32 offset, u32 size)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct sg_table *st;
-	struct scatterlist *sg;
-
-	DRM_DEBUG_DRIVER("offset=0x%x, size=%d\n", offset, size);
-	BUG_ON(offset > dev_priv->gtt.stolen_size - size);
-
-	/* We hide that we have no struct page backing our stolen object
-	 * by wrapping the contiguous physical allocation with a fake
-	 * dma mapping in a single scatterlist.
-	 */
-
-	st = kmalloc(sizeof(*st), GFP_KERNEL);
-	if (st == NULL)
-		return NULL;
-
-	if (sg_alloc_table(st, 1, GFP_KERNEL)) {
-		kfree(st);
-		return NULL;
-	}
-
-	sg = st->sgl;
-	sg->offset = offset;
-	sg->length = size;
-
-	sg_dma_address(sg) = (dma_addr_t)dev_priv->mm.stolen_base + offset;
-	sg_dma_len(sg) = size;
-
-	return st;
-}
-
-static int i915_gem_object_get_pages_stolen(struct drm_i915_gem_object *obj)
-{
-	BUG();
-	return -EINVAL;
-}
-
-static void i915_gem_object_put_pages_stolen(struct drm_i915_gem_object *obj)
-{
-	/* Should only be called during free */
-	sg_free_table(obj->pages);
-	kfree(obj->pages);
-}
-
-static const struct drm_i915_gem_object_ops i915_gem_object_stolen_ops = {
-	.get_pages = i915_gem_object_get_pages_stolen,
-	.put_pages = i915_gem_object_put_pages_stolen,
-};
-
-static struct drm_i915_gem_object *
-_i915_gem_object_create_stolen(struct drm_device *dev,
-			       struct drm_mm_node *stolen)
-{
-	struct drm_i915_gem_object *obj;
-
-	obj = i915_gem_object_alloc(dev);
-	if (obj == NULL)
-		return NULL;
-
-	if (drm_gem_private_object_init(dev, &obj->base, stolen->size))
-		goto cleanup;
-
-	i915_gem_object_init(obj, &i915_gem_object_stolen_ops);
-
-	obj->pages = i915_pages_create_for_stolen(dev,
-						  stolen->start, stolen->size);
-	if (obj->pages == NULL)
-		goto cleanup;
-
-	obj->has_dma_mapping = true;
-	i915_gem_object_pin_pages(obj);
-	obj->stolen = stolen;
-
-	obj->base.write_domain = I915_GEM_DOMAIN_GTT;
-	obj->base.read_domains = I915_GEM_DOMAIN_GTT;
-	obj->cache_level = I915_CACHE_NONE;
-
-	return obj;
-
-cleanup:
-	i915_gem_object_free(obj);
-	return NULL;
-}
-
-struct drm_i915_gem_object *
-i915_gem_object_create_stolen(struct drm_device *dev, u32 size)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct drm_i915_gem_object *obj;
-	struct drm_mm_node *stolen;
-
-	if (!drm_mm_initialized(&dev_priv->mm.stolen))
-		return NULL;
-
-	DRM_DEBUG_KMS("creating stolen object: size=%x\n", size);
-	if (size == 0)
-		return NULL;
-
-	stolen = drm_mm_search_free(&dev_priv->mm.stolen, size, 4096, 0);
-	if (stolen)
-		stolen = drm_mm_get_block(stolen, size, 4096);
-	if (stolen == NULL)
-		return NULL;
-
-	obj = _i915_gem_object_create_stolen(dev, stolen);
-	if (obj)
-		return obj;
-
-	drm_mm_put_block(stolen);
-	return NULL;
-}
-
-struct drm_i915_gem_object *
-i915_gem_object_create_stolen_for_preallocated(struct drm_device *dev,
-					       u32 stolen_offset,
-					       u32 gtt_offset,
-					       u32 size)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct drm_i915_gem_object *obj;
-	struct drm_mm_node *stolen;
-
-	if (!drm_mm_initialized(&dev_priv->mm.stolen))
-		return NULL;
-
-	DRM_DEBUG_KMS("creating preallocated stolen object: stolen_offset=%x, gtt_offset=%x, size=%x\n",
-			stolen_offset, gtt_offset, size);
-
-	/* KISS and expect everything to be page-aligned */
-	BUG_ON(stolen_offset & 4095);
-	BUG_ON(size & 4095);
-
-	if (WARN_ON(size == 0))
-		return NULL;
-
-	stolen = drm_mm_create_block(&dev_priv->mm.stolen,
-				     stolen_offset, size,
-				     false);
-	if (stolen == NULL) {
-		DRM_DEBUG_KMS("failed to allocate stolen space\n");
-		return NULL;
-	}
-
-	obj = _i915_gem_object_create_stolen(dev, stolen);
-	if (obj == NULL) {
-		DRM_DEBUG_KMS("failed to allocate stolen object\n");
-		drm_mm_put_block(stolen);
-		return NULL;
-	}
-
-	/* Some objects just need physical mem from stolen space */
-	if (gtt_offset == -1)
-		return obj;
-
-	/* To simplify the initialisation sequence between KMS and GTT,
-	 * we allow construction of the stolen object prior to
-	 * setting up the GTT space. The actual reservation will occur
-	 * later.
-	 */
-	if (drm_mm_initialized(&dev_priv->mm.gtt_space)) {
-		obj->gtt_space = drm_mm_create_block(&dev_priv->mm.gtt_space,
-						     gtt_offset, size,
-						     false);
-		if (obj->gtt_space == NULL) {
-			DRM_DEBUG_KMS("failed to allocate stolen GTT space\n");
-			drm_gem_object_unreference(&obj->base);
-			return NULL;
-		}
-	} else
-		obj->gtt_space = I915_GTT_RESERVED;
-
-	obj->gtt_offset = gtt_offset;
-	obj->has_global_gtt_mapping = 1;
-
-	list_add_tail(&obj->global_list, &dev_priv->mm.bound_list);
-	list_add_tail(&obj->mm_list, &dev_priv->mm.inactive_list);
-
-	return obj;
-}
-
-void
-i915_gem_object_release_stolen(struct drm_i915_gem_object *obj)
-{
-	if (obj->stolen) {
-		drm_mm_put_block(obj->stolen);
-		obj->stolen = NULL;
-	}
-}