Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/Makefile | 1 +
drivers/gpu/drm/i915/i915_dma.c | 161 ++-----------------------
drivers/gpu/drm/i915/i915_drv.h | 4 +
drivers/gpu/drm/i915/i915_gem_stolen.c | 201 ++++++++++++++++++++++++++++++++
4 files changed, 218 insertions(+), 149 deletions(-)
create mode 100644 drivers/gpu/drm/i915/i915_gem_stolen.c
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index b65c06f..8b8bbc7 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -11,6 +11,7 @@ i915-y := i915_drv.o i915_dma.o i915_irq.o \
i915_gem_evict.o \
i915_gem_execbuffer.o \
i915_gem_gtt.o \
+ i915_gem_stolen.o \
i915_gem_tiling.o \
i915_sysfs.o \
i915_trace_points.o \
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index a813f65..e3f1488 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1019,133 +1019,6 @@ intel_teardown_mchbar(struct drm_device *dev)
release_resource(&dev_priv->mch_res);
}
-#define PTE_ADDRESS_MASK 0xfffff000
-#define PTE_ADDRESS_MASK_HIGH 0x000000f0 /* i915+ */
-#define PTE_MAPPING_TYPE_UNCACHED (0 << 1)
-#define PTE_MAPPING_TYPE_DCACHE (1 << 1) /* i830 only */
-#define PTE_MAPPING_TYPE_CACHED (3 << 1)
-#define PTE_MAPPING_TYPE_MASK (3 << 1)
-#define PTE_VALID (1 << 0)
-
-/**
- * i915_stolen_to_phys - take an offset into stolen memory and turn it into
- * a physical one
- * @dev: drm device
- * @offset: address to translate
- *
- * Some chip functions require allocations from stolen space and need the
- * physical address of the memory in question.
- */
-static unsigned long i915_stolen_to_phys(struct drm_device *dev, u32 offset)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct pci_dev *pdev = dev_priv->bridge_dev;
- u32 base;
-
-#if 0
- /* On the machines I have tested the Graphics Base of Stolen Memory
- * is unreliable, so 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.
- */
- if (INTEL_INFO(dev)->gen > 3 || IS_G33(dev)) {
- /* top 32bits are reserved = 0 */
- pci_read_config_dword(pdev, 0xA4, &base);
- } else {
- /* XXX presume 8xx is the same as i915 */
- pci_bus_read_config_dword(pdev->bus, 2, 0x5C, &base);
- }
-#else
- if (INTEL_INFO(dev)->gen > 3 || IS_G33(dev)) {
- u16 val;
- pci_read_config_word(pdev, 0xb0, &val);
- base = val >> 4 << 20;
- } else {
- u8 val;
- pci_read_config_byte(pdev, 0x9c, &val);
- base = val >> 3 << 27;
- }
- base -= dev_priv->mm.gtt->stolen_size;
-#endif
-
- return base + offset;
-}
-
-static void i915_warn_stolen(struct drm_device *dev)
-{
- DRM_ERROR("not enough stolen space for compressed buffer, disabling\n");
- DRM_ERROR("hint: you may be able to increase stolen memory size in the
BIOS to avoid this\n");
-}
-
-static void 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);
- unsigned long cfb_base;
- unsigned long ll_base = 0;
-
- /* Just in case the BIOS is doing something questionable. */
- intel_disable_fbc(dev);
-
- compressed_fb = drm_mm_search_free(&dev_priv->mm.stolen, size, 4096, 0);
- if (compressed_fb)
- compressed_fb = drm_mm_get_block(compressed_fb, size, 4096);
- if (!compressed_fb)
- goto err;
-
- cfb_base = i915_stolen_to_phys(dev, compressed_fb->start);
- if (!cfb_base)
- goto err_fb;
-
- if (!(IS_GM45(dev) || HAS_PCH_SPLIT(dev))) {
- 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;
-
- ll_base = i915_stolen_to_phys(dev, compressed_llb->start);
- if (!ll_base)
- goto err_llb;
- }
-
- dev_priv->cfb_size = size;
-
- dev_priv->compressed_fb = compressed_fb;
- 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 {
- I915_WRITE(FBC_CFB_BASE, cfb_base);
- I915_WRITE(FBC_LL_BASE, ll_base);
- dev_priv->compressed_llb = compressed_llb;
- }
-
- DRM_DEBUG_KMS("FBC base 0x%08lx, ll base 0x%08lx, size %dM\n",
- cfb_base, ll_base, size >> 20);
- return;
-
-err_llb:
- drm_mm_put_block(compressed_llb);
-err_fb:
- drm_mm_put_block(compressed_fb);
-err:
- dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL;
- i915_warn_stolen(dev);
-}
-
-static void i915_cleanup_compression(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
-
- drm_mm_put_block(dev_priv->compressed_fb);
- if (dev_priv->compressed_llb)
- drm_mm_put_block(dev_priv->compressed_llb);
-}
-
/* true = enable decode, false = disable decoder */
static unsigned int i915_vga_set_decode(void *cookie, bool state)
{
@@ -1207,16 +1080,12 @@ intel_enable_ppgtt(struct drm_device *dev)
static int i915_load_gem_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
- unsigned long prealloc_size, gtt_size, mappable_size;
+ unsigned long gtt_size, mappable_size;
int ret;
- prealloc_size = dev_priv->mm.gtt->stolen_size;
gtt_size = dev_priv->mm.gtt->gtt_total_entries << PAGE_SHIFT;
mappable_size = dev_priv->mm.gtt->gtt_mappable_entries << PAGE_SHIFT;
- /* Basic memrange allocator for stolen space */
- drm_mm_init(&dev_priv->mm.stolen, 0, prealloc_size);
-
mutex_lock(&dev->struct_mutex);
if (intel_enable_ppgtt(dev) && HAS_ALIASING_PPGTT(dev)) {
/* PPGTT pdes are stolen from global gtt ptes, so shrink the
@@ -1252,20 +1121,6 @@ static int i915_load_gem_init(struct drm_device *dev)
return ret;
}
- /* Try to set up FBC with a reasonable compressed buffer size */
- if (I915_HAS_FBC(dev) && i915_powersave) {
- int cfb_size;
-
- /* Leave 1M for line length buffer & misc. */
-
- /* Try to get a 32M buffer... */
- if (prealloc_size > (36*1024*1024))
- cfb_size = 32*1024*1024;
- else /* fall back to 7/8 of the stolen space */
- cfb_size = prealloc_size * 7 / 8;
- i915_setup_compression(dev, cfb_size);
- }
-
/* Allow hardware batchbuffers unless told otherwise. */
dev_priv->allow_batchbuffer = 1;
return 0;
@@ -1304,11 +1159,18 @@ static int i915_load_modeset_init(struct drm_device
*dev)
if (IS_GEN3(dev) && (I915_READ(ECOSKPD) & ECO_FLIP_DONE))
dev_priv->flip_pending_is_done = true;
+ /* Initialise stolen first so that we may reserve preallocated
+ * objects for the BIOS to KMS transition.
+ */
+ ret = i915_gem_init_stolen(dev);
+ if (ret)
+ goto cleanup_vga_switcheroo;
+
intel_modeset_init(dev);
ret = i915_load_gem_init(dev);
if (ret)
- goto cleanup_vga_switcheroo;
+ goto cleanup_gem_stolen;
intel_modeset_gem_init(dev);
@@ -1338,6 +1200,8 @@ cleanup_gem:
i915_gem_cleanup_ringbuffer(dev);
mutex_unlock(&dev->struct_mutex);
i915_gem_cleanup_aliasing_ppgtt(dev);
+cleanup_gem_stolen:
+ i915_gem_cleanup_stolen(dev);
cleanup_vga_switcheroo:
vga_switcheroo_unregister_client(dev->pdev);
cleanup_vga_client:
@@ -2252,8 +2116,7 @@ int i915_driver_unload(struct drm_device *dev)
i915_gem_cleanup_ringbuffer(dev);
mutex_unlock(&dev->struct_mutex);
i915_gem_cleanup_aliasing_ppgtt(dev);
- if (I915_HAS_FBC(dev) && i915_powersave)
- i915_cleanup_compression(dev);
+ i915_gem_cleanup_stolen(dev);
drm_mm_takedown(&dev_priv->mm.stolen);
intel_cleanup_overlay(dev);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index f4dbdb3..a31ef45 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1368,6 +1368,10 @@ int __must_check i915_gem_evict_something(struct
drm_device *dev, int min_size,
bool nonblock);
int i915_gem_evict_everything(struct drm_device *dev);
+/* i915_gem_stolen.c */
+int i915_gem_init_stolen(struct drm_device *dev);
+void i915_gem_cleanup_stolen(struct drm_device *dev);
+
/* i915_gem_tiling.c */
void i915_gem_detect_bit_6_swizzle(struct drm_device *dev);
void i915_gem_object_do_bit_17_swizzle(struct drm_i915_gem_object *obj);
diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c
b/drivers/gpu/drm/i915/i915_gem_stolen.c
new file mode 100644
index 0000000..2cb1f98
--- /dev/null
+++ b/drivers/gpu/drm/i915/i915_gem_stolen.c
@@ -0,0 +1,201 @@
+/*
+ * Copyright © 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:
+ * Chris Wilson <ch...@chris-wilson.co.uk>
+ *
+ */
+
+#include "drmP.h"
+#include "drm.h"
+#include "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.
+ */
+
+#define PTE_ADDRESS_MASK 0xfffff000
+#define PTE_ADDRESS_MASK_HIGH 0x000000f0 /* i915+ */
+#define PTE_MAPPING_TYPE_UNCACHED (0 << 1)
+#define PTE_MAPPING_TYPE_DCACHE (1 << 1) /* i830 only */
+#define PTE_MAPPING_TYPE_CACHED (3 << 1)
+#define PTE_MAPPING_TYPE_MASK (3 << 1)
+#define PTE_VALID (1 << 0)
+
+/**
+ * i915_stolen_to_phys - take an offset into stolen memory and turn it into
+ * a physical one
+ * @dev: drm device
+ * @offset: address to translate
+ *
+ * Some chip functions require allocations from stolen space and need the
+ * physical address of the memory in question.
+ */
+static unsigned long i915_stolen_to_phys(struct drm_device *dev, u32 offset)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct pci_dev *pdev = dev_priv->bridge_dev;
+ u32 base;
+
+#if 0
+ /* On the machines I have tested the Graphics Base of Stolen Memory
+ * is unreliable, so 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.
+ */
+ if (INTEL_INFO(dev)->gen > 3 || IS_G33(dev)) {
+ /* top 32bits are reserved = 0 */
+ pci_read_config_dword(pdev, 0xA4, &base);
+ } else {
+ /* XXX presume 8xx is the same as i915 */
+ pci_bus_read_config_dword(pdev->bus, 2, 0x5C, &base);
+ }
+#else
+ if (INTEL_INFO(dev)->gen > 3 || IS_G33(dev)) {
+ u16 val;
+ pci_read_config_word(pdev, 0xb0, &val);
+ base = val >> 4 << 20;
+ } else {
+ u8 val;
+ pci_read_config_byte(pdev, 0x9c, &val);
+ base = val >> 3 << 27;
+ }
+ base -= dev_priv->mm.gtt->stolen_size;
+#endif
+
+ return base + offset;
+}
+
+static void i915_warn_stolen(struct drm_device *dev)
+{
+ DRM_INFO("not enough stolen space for compressed buffer, disabling\n");
+ DRM_INFO("hint: you may be able to increase stolen memory size in the
BIOS to avoid this\n");
+}
+
+static void 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);
+ unsigned long cfb_base;
+ unsigned long ll_base = 0;
+
+ /* Just in case the BIOS is doing something questionable. */
+ intel_disable_fbc(dev);
+
+ compressed_fb = drm_mm_search_free(&dev_priv->mm.stolen, size, 4096, 0);
+ if (compressed_fb)
+ compressed_fb = drm_mm_get_block(compressed_fb, size, 4096);
+ if (!compressed_fb)
+ goto err;
+
+ cfb_base = i915_stolen_to_phys(dev, compressed_fb->start);
+ if (!cfb_base)
+ goto err_fb;
+
+ if (!(IS_GM45(dev) || HAS_PCH_SPLIT(dev))) {
+ 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;
+
+ ll_base = i915_stolen_to_phys(dev, compressed_llb->start);
+ if (!ll_base)
+ goto err_llb;
+ }
+
+ dev_priv->cfb_size = size;
+
+ dev_priv->compressed_fb = compressed_fb;
+ 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 {
+ I915_WRITE(FBC_CFB_BASE, cfb_base);
+ I915_WRITE(FBC_LL_BASE, ll_base);
+ dev_priv->compressed_llb = compressed_llb;
+ }
+
+ DRM_DEBUG_KMS("FBC base 0x%08lx, ll base 0x%08lx, size %dM\n",
+ cfb_base, ll_base, size >> 20);
+ return;
+
+err_llb:
+ drm_mm_put_block(compressed_llb);
+err_fb:
+ drm_mm_put_block(compressed_fb);
+err:
+ dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL;
+ i915_warn_stolen(dev);
+}
+
+static void i915_cleanup_compression(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ drm_mm_put_block(dev_priv->compressed_fb);
+ if (dev_priv->compressed_llb)
+ drm_mm_put_block(dev_priv->compressed_llb);
+}
+
+void i915_gem_cleanup_stolen(struct drm_device *dev)
+{
+ if (I915_HAS_FBC(dev) && i915_powersave)
+ i915_cleanup_compression(dev);
+}
+
+int i915_gem_init_stolen(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ unsigned long prealloc_size = dev_priv->mm.gtt->stolen_size;
+
+ /* Basic memrange allocator for stolen space */
+ drm_mm_init(&dev_priv->mm.stolen, 0, prealloc_size);
+
+ /* Try to set up FBC with a reasonable compressed buffer size */
+ if (I915_HAS_FBC(dev) && i915_powersave) {
+ int cfb_size;
+
+ /* Leave 1M for line length buffer & misc. */
+
+ /* Try to get a 32M buffer... */
+ if (prealloc_size > (36*1024*1024))
+ cfb_size = 32*1024*1024;
+ else /* fall back to 7/8 of the stolen space */
+ cfb_size = prealloc_size * 7 / 8;
+ i915_setup_compression(dev, cfb_size);
+ }
+
+ return 0;
+}
--
1.7.10
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