This is required should we ever attempt to use an io-mapping where
KM_USER0 is verboten, such as inside an IRQ context.
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
Cc: Eric Anholt <e...@anholt.net>
---
drivers/gpu/drm/i915/i915_gem.c | 9 +++++----
drivers/gpu/drm/i915/intel_overlay.c | 5 +++--
drivers/gpu/drm/nouveau/nouveau_bios.c | 8 ++++----
include/linux/io-mapping.h | 16 ++++++++++------
4 files changed, 22 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 862ce34..4cf2789 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -496,10 +496,10 @@ fast_user_write(struct io_mapping *mapping,
char *vaddr_atomic;
unsigned long unwritten;
- vaddr_atomic = io_mapping_map_atomic_wc(mapping, page_base);
+ vaddr_atomic = io_mapping_map_atomic_wc(mapping, page_base, KM_USER0);
unwritten = __copy_from_user_inatomic_nocache(vaddr_atomic +
page_offset,
user_data, length);
- io_mapping_unmap_atomic(vaddr_atomic);
+ io_mapping_unmap_atomic(vaddr_atomic, KM_USER0);
if (unwritten)
return -EFAULT;
return 0;
@@ -3288,7 +3288,8 @@ i915_gem_object_pin_and_relocate(struct drm_gem_object
*obj,
reloc_offset = obj_priv->gtt_offset + reloc->offset;
reloc_page = io_mapping_map_atomic_wc(dev_priv->mm.gtt_mapping,
(reloc_offset &
- ~(PAGE_SIZE - 1)));
+ ~(PAGE_SIZE - 1)),
+ KM_USER0);
reloc_entry = (uint32_t __iomem *)(reloc_page +
(reloc_offset & (PAGE_SIZE -
1)));
reloc_val = target_obj_priv->gtt_offset + reloc->delta;
@@ -3299,7 +3300,7 @@ i915_gem_object_pin_and_relocate(struct drm_gem_object
*obj,
readl(reloc_entry), reloc_val);
#endif
writel(reloc_val, reloc_entry);
- io_mapping_unmap_atomic(reloc_page);
+ io_mapping_unmap_atomic(reloc_page, KM_USER0);
/* The updated presumed offset for this entry will be
* copied back out to the user.
diff --git a/drivers/gpu/drm/i915/intel_overlay.c
b/drivers/gpu/drm/i915/intel_overlay.c
index f26ec2f..d39aea2 100644
--- a/drivers/gpu/drm/i915/intel_overlay.c
+++ b/drivers/gpu/drm/i915/intel_overlay.c
@@ -185,7 +185,8 @@ static struct overlay_registers
*intel_overlay_map_regs_atomic(struct intel_over
if (OVERLAY_NONPHYSICAL(overlay->dev)) {
regs = io_mapping_map_atomic_wc(dev_priv->mm.gtt_mapping,
- overlay->reg_bo->gtt_offset);
+ overlay->reg_bo->gtt_offset,
+ KM_USER0);
if (!regs) {
DRM_ERROR("failed to map overlay regs in GTT\n");
@@ -200,7 +201,7 @@ static struct overlay_registers
*intel_overlay_map_regs_atomic(struct intel_over
static void intel_overlay_unmap_regs_atomic(struct intel_overlay *overlay)
{
if (OVERLAY_NONPHYSICAL(overlay->dev))
- io_mapping_unmap_atomic(overlay->virt_addr);
+ io_mapping_unmap_atomic(overlay->virt_addr, KM_USER0);
overlay->virt_addr = NULL;
diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c
b/drivers/gpu/drm/nouveau/nouveau_bios.c
index b59f348..7369b5e 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bios.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bios.c
@@ -2083,11 +2083,11 @@ peek_fb(struct drm_device *dev, struct io_mapping *fb,
uint32_t val = 0;
if (off < pci_resource_len(dev->pdev, 1)) {
- uint32_t __iomem *p = io_mapping_map_atomic_wc(fb, off);
+ uint32_t __iomem *p = io_mapping_map_atomic_wc(fb, off,
KM_USER0);
val = ioread32(p);
- io_mapping_unmap_atomic(p);
+ io_mapping_unmap_atomic(p, KM_USER0);
}
return val;
@@ -2098,12 +2098,12 @@ poke_fb(struct drm_device *dev, struct io_mapping *fb,
uint32_t off, uint32_t val)
{
if (off < pci_resource_len(dev->pdev, 1)) {
- uint32_t __iomem *p = io_mapping_map_atomic_wc(fb, off);
+ uint32_t __iomem *p = io_mapping_map_atomic_wc(fb, off,
KM_USER0);
iowrite32(val, p);
wmb();
- io_mapping_unmap_atomic(p);
+ io_mapping_unmap_atomic(p, KM_USER0);
}
}
diff --git a/include/linux/io-mapping.h b/include/linux/io-mapping.h
index 25085dd..e0ea40f 100644
--- a/include/linux/io-mapping.h
+++ b/include/linux/io-mapping.h
@@ -79,7 +79,9 @@ io_mapping_free(struct io_mapping *mapping)
/* Atomic map/unmap */
static inline void *
-io_mapping_map_atomic_wc(struct io_mapping *mapping, unsigned long offset)
+io_mapping_map_atomic_wc(struct io_mapping *mapping,
+ unsigned long offset,
+ int slot)
{
resource_size_t phys_addr;
unsigned long pfn;
@@ -87,13 +89,13 @@ io_mapping_map_atomic_wc(struct io_mapping *mapping,
unsigned long offset)
BUG_ON(offset >= mapping->size);
phys_addr = mapping->base + offset;
pfn = (unsigned long) (phys_addr >> PAGE_SHIFT);
- return iomap_atomic_prot_pfn(pfn, KM_USER0, mapping->prot);
+ return iomap_atomic_prot_pfn(pfn, slot, mapping->prot);
}
static inline void
-io_mapping_unmap_atomic(void *vaddr)
+io_mapping_unmap_atomic(void *vaddr, int slot)
{
- iounmap_atomic(vaddr, KM_USER0);
+ iounmap_atomic(vaddr, slot);
}
static inline void *
@@ -133,13 +135,15 @@ io_mapping_free(struct io_mapping *mapping)
/* Atomic map/unmap */
static inline void *
-io_mapping_map_atomic_wc(struct io_mapping *mapping, unsigned long offset)
+io_mapping_map_atomic_wc(struct io_mapping *mapping,
+ unsigned long offset,
+ int slot)
{
return ((char *) mapping) + offset;
}
static inline void
-io_mapping_unmap_atomic(void *vaddr)
+io_mapping_unmap_atomic(void *vaddr, int slot)
{
}
--
1.7.1
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