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path: root/drivers/gpu/drm/i915/i915_gem_gtt.c
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Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_gtt.c')
-rw-r--r--drivers/gpu/drm/i915/i915_gem_gtt.c109
1 files changed, 85 insertions, 24 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 212f6d8c35ec..1f7b4caefb6e 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -58,9 +58,10 @@
#define HSW_WT_ELLC_LLC_AGE0 HSW_CACHEABILITY_CONTROL(0x6)
static gen6_gtt_pte_t snb_pte_encode(dma_addr_t addr,
- enum i915_cache_level level)
+ enum i915_cache_level level,
+ bool valid)
{
- gen6_gtt_pte_t pte = GEN6_PTE_VALID;
+ gen6_gtt_pte_t pte = valid ? GEN6_PTE_VALID : 0;
pte |= GEN6_PTE_ADDR_ENCODE(addr);
switch (level) {
@@ -79,9 +80,10 @@ static gen6_gtt_pte_t snb_pte_encode(dma_addr_t addr,
}
static gen6_gtt_pte_t ivb_pte_encode(dma_addr_t addr,
- enum i915_cache_level level)
+ enum i915_cache_level level,
+ bool valid)
{
- gen6_gtt_pte_t pte = GEN6_PTE_VALID;
+ gen6_gtt_pte_t pte = valid ? GEN6_PTE_VALID : 0;
pte |= GEN6_PTE_ADDR_ENCODE(addr);
switch (level) {
@@ -105,9 +107,10 @@ static gen6_gtt_pte_t ivb_pte_encode(dma_addr_t addr,
#define BYT_PTE_SNOOPED_BY_CPU_CACHES (1 << 2)
static gen6_gtt_pte_t byt_pte_encode(dma_addr_t addr,
- enum i915_cache_level level)
+ enum i915_cache_level level,
+ bool valid)
{
- gen6_gtt_pte_t pte = GEN6_PTE_VALID;
+ gen6_gtt_pte_t pte = valid ? GEN6_PTE_VALID : 0;
pte |= GEN6_PTE_ADDR_ENCODE(addr);
/* Mark the page as writeable. Other platforms don't have a
@@ -122,9 +125,10 @@ static gen6_gtt_pte_t byt_pte_encode(dma_addr_t addr,
}
static gen6_gtt_pte_t hsw_pte_encode(dma_addr_t addr,
- enum i915_cache_level level)
+ enum i915_cache_level level,
+ bool valid)
{
- gen6_gtt_pte_t pte = GEN6_PTE_VALID;
+ gen6_gtt_pte_t pte = valid ? GEN6_PTE_VALID : 0;
pte |= HSW_PTE_ADDR_ENCODE(addr);
if (level != I915_CACHE_NONE)
@@ -134,9 +138,10 @@ static gen6_gtt_pte_t hsw_pte_encode(dma_addr_t addr,
}
static gen6_gtt_pte_t iris_pte_encode(dma_addr_t addr,
- enum i915_cache_level level)
+ enum i915_cache_level level,
+ bool valid)
{
- gen6_gtt_pte_t pte = GEN6_PTE_VALID;
+ gen6_gtt_pte_t pte = valid ? GEN6_PTE_VALID : 0;
pte |= HSW_PTE_ADDR_ENCODE(addr);
switch (level) {
@@ -236,7 +241,8 @@ static int gen6_ppgtt_enable(struct drm_device *dev)
/* PPGTT support for Sandybdrige/Gen6 and later */
static void gen6_ppgtt_clear_range(struct i915_address_space *vm,
unsigned first_entry,
- unsigned num_entries)
+ unsigned num_entries,
+ bool use_scratch)
{
struct i915_hw_ppgtt *ppgtt =
container_of(vm, struct i915_hw_ppgtt, base);
@@ -245,7 +251,7 @@ static void gen6_ppgtt_clear_range(struct i915_address_space *vm,
unsigned first_pte = first_entry % I915_PPGTT_PT_ENTRIES;
unsigned last_pte, i;
- scratch_pte = vm->pte_encode(vm->scratch.addr, I915_CACHE_LLC);
+ scratch_pte = vm->pte_encode(vm->scratch.addr, I915_CACHE_LLC, true);
while (num_entries) {
last_pte = first_pte + num_entries;
@@ -282,7 +288,7 @@ static void gen6_ppgtt_insert_entries(struct i915_address_space *vm,
dma_addr_t page_addr;
page_addr = sg_page_iter_dma_address(&sg_iter);
- pt_vaddr[act_pte] = vm->pte_encode(page_addr, cache_level);
+ pt_vaddr[act_pte] = vm->pte_encode(page_addr, cache_level, true);
if (++act_pte == I915_PPGTT_PT_ENTRIES) {
kunmap_atomic(pt_vaddr);
act_pt++;
@@ -367,7 +373,7 @@ static int gen6_ppgtt_init(struct i915_hw_ppgtt *ppgtt)
}
ppgtt->base.clear_range(&ppgtt->base, 0,
- ppgtt->num_pd_entries * I915_PPGTT_PT_ENTRIES);
+ ppgtt->num_pd_entries * I915_PPGTT_PT_ENTRIES, true);
ppgtt->pd_offset = first_pd_entry_in_global_pt * sizeof(gen6_gtt_pte_t);
@@ -444,7 +450,8 @@ void i915_ppgtt_unbind_object(struct i915_hw_ppgtt *ppgtt,
{
ppgtt->base.clear_range(&ppgtt->base,
i915_gem_obj_ggtt_offset(obj) >> PAGE_SHIFT,
- obj->base.size >> PAGE_SHIFT);
+ obj->base.size >> PAGE_SHIFT,
+ true);
}
extern int intel_iommu_gfx_mapped;
@@ -485,15 +492,65 @@ static void undo_idling(struct drm_i915_private *dev_priv, bool interruptible)
dev_priv->mm.interruptible = interruptible;
}
+void i915_check_and_clear_faults(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_ring_buffer *ring;
+ int i;
+
+ if (INTEL_INFO(dev)->gen < 6)
+ return;
+
+ for_each_ring(ring, dev_priv, i) {
+ u32 fault_reg;
+ fault_reg = I915_READ(RING_FAULT_REG(ring));
+ if (fault_reg & RING_FAULT_VALID) {
+ DRM_DEBUG_DRIVER("Unexpected fault\n"
+ "\tAddr: 0x%08lx\\n"
+ "\tAddress space: %s\n"
+ "\tSource ID: %d\n"
+ "\tType: %d\n",
+ fault_reg & PAGE_MASK,
+ fault_reg & RING_FAULT_GTTSEL_MASK ? "GGTT" : "PPGTT",
+ RING_FAULT_SRCID(fault_reg),
+ RING_FAULT_FAULT_TYPE(fault_reg));
+ I915_WRITE(RING_FAULT_REG(ring),
+ fault_reg & ~RING_FAULT_VALID);
+ }
+ }
+ POSTING_READ(RING_FAULT_REG(&dev_priv->ring[RCS]));
+}
+
+void i915_gem_suspend_gtt_mappings(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ /* Don't bother messing with faults pre GEN6 as we have little
+ * documentation supporting that it's a good idea.
+ */
+ if (INTEL_INFO(dev)->gen < 6)
+ return;
+
+ i915_check_and_clear_faults(dev);
+
+ dev_priv->gtt.base.clear_range(&dev_priv->gtt.base,
+ dev_priv->gtt.base.start / PAGE_SIZE,
+ dev_priv->gtt.base.total / PAGE_SIZE,
+ false);
+}
+
void i915_gem_restore_gtt_mappings(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_i915_gem_object *obj;
+ i915_check_and_clear_faults(dev);
+
/* First fill our portion of the GTT with scratch pages */
dev_priv->gtt.base.clear_range(&dev_priv->gtt.base,
dev_priv->gtt.base.start / PAGE_SIZE,
- dev_priv->gtt.base.total / PAGE_SIZE);
+ dev_priv->gtt.base.total / PAGE_SIZE,
+ true);
list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
i915_gem_clflush_object(obj, obj->pin_display);
@@ -536,7 +593,7 @@ static void gen6_ggtt_insert_entries(struct i915_address_space *vm,
for_each_sg_page(st->sgl, &sg_iter, st->nents, 0) {
addr = sg_page_iter_dma_address(&sg_iter);
- iowrite32(vm->pte_encode(addr, level), &gtt_entries[i]);
+ iowrite32(vm->pte_encode(addr, level, true), &gtt_entries[i]);
i++;
}
@@ -548,7 +605,7 @@ static void gen6_ggtt_insert_entries(struct i915_address_space *vm,
*/
if (i != 0)
WARN_ON(readl(&gtt_entries[i-1]) !=
- vm->pte_encode(addr, level));
+ vm->pte_encode(addr, level, true));
/* This next bit makes the above posting read even more important. We
* want to flush the TLBs only after we're certain all the PTE updates
@@ -560,7 +617,8 @@ static void gen6_ggtt_insert_entries(struct i915_address_space *vm,
static void gen6_ggtt_clear_range(struct i915_address_space *vm,
unsigned int first_entry,
- unsigned int num_entries)
+ unsigned int num_entries,
+ bool use_scratch)
{
struct drm_i915_private *dev_priv = vm->dev->dev_private;
gen6_gtt_pte_t scratch_pte, __iomem *gtt_base =
@@ -573,7 +631,8 @@ static void gen6_ggtt_clear_range(struct i915_address_space *vm,
first_entry, num_entries, max_entries))
num_entries = max_entries;
- scratch_pte = vm->pte_encode(vm->scratch.addr, I915_CACHE_LLC);
+ scratch_pte = vm->pte_encode(vm->scratch.addr, I915_CACHE_LLC, use_scratch);
+
for (i = 0; i < num_entries; i++)
iowrite32(scratch_pte, &gtt_base[i]);
readl(gtt_base);
@@ -594,7 +653,8 @@ static void i915_ggtt_insert_entries(struct i915_address_space *vm,
static void i915_ggtt_clear_range(struct i915_address_space *vm,
unsigned int first_entry,
- unsigned int num_entries)
+ unsigned int num_entries,
+ bool unused)
{
intel_gtt_clear_range(first_entry, num_entries);
}
@@ -622,7 +682,8 @@ void i915_gem_gtt_unbind_object(struct drm_i915_gem_object *obj)
dev_priv->gtt.base.clear_range(&dev_priv->gtt.base,
entry,
- obj->base.size >> PAGE_SHIFT);
+ obj->base.size >> PAGE_SHIFT,
+ true);
obj->has_global_gtt_mapping = 0;
}
@@ -709,11 +770,11 @@ void i915_gem_setup_global_gtt(struct drm_device *dev,
const unsigned long count = (hole_end - hole_start) / PAGE_SIZE;
DRM_DEBUG_KMS("clearing unused GTT space: [%lx, %lx]\n",
hole_start, hole_end);
- ggtt_vm->clear_range(ggtt_vm, hole_start / PAGE_SIZE, count);
+ ggtt_vm->clear_range(ggtt_vm, hole_start / PAGE_SIZE, count, true);
}
/* And finally clear the reserved guard page */
- ggtt_vm->clear_range(ggtt_vm, end / PAGE_SIZE - 1, 1);
+ ggtt_vm->clear_range(ggtt_vm, end / PAGE_SIZE - 1, 1, true);
}
static bool
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-18 01:09:49 +0300