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drm/i915: Move the remaining gtt code
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It's pretty much all consolidated now that we've killed AGP. We can move
the one outlier, and defines too.

(Kill some unused defines in the process)

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Ben Widawsky authored and Daniel Vetter committed Nov 11, 2012
1 parent 0f9b91c commit 26b1ff3
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Showing 3 changed files with 76 additions and 79 deletions.
62 changes: 0 additions & 62 deletions drivers/gpu/drm/i915/i915_gem.c
Original file line number Diff line number Diff line change
Expand Up @@ -3875,68 +3875,6 @@ void i915_gem_init_swizzling(struct drm_device *dev)
I915_WRITE(ARB_MODE, _MASKED_BIT_ENABLE(ARB_MODE_SWIZZLE_IVB));
}

void i915_gem_init_ppgtt(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
uint32_t pd_offset;
struct intel_ring_buffer *ring;
struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt;
uint32_t __iomem *pd_addr;
uint32_t pd_entry;
int i;

if (!dev_priv->mm.aliasing_ppgtt)
return;


pd_addr = dev_priv->mm.gtt->gtt + ppgtt->pd_offset/sizeof(uint32_t);
for (i = 0; i < ppgtt->num_pd_entries; i++) {
dma_addr_t pt_addr;

if (dev_priv->mm.gtt->needs_dmar)
pt_addr = ppgtt->pt_dma_addr[i];
else
pt_addr = page_to_phys(ppgtt->pt_pages[i]);

pd_entry = GEN6_PDE_ADDR_ENCODE(pt_addr);
pd_entry |= GEN6_PDE_VALID;

writel(pd_entry, pd_addr + i);
}
readl(pd_addr);

pd_offset = ppgtt->pd_offset;
pd_offset /= 64; /* in cachelines, */
pd_offset <<= 16;

if (INTEL_INFO(dev)->gen == 6) {
uint32_t ecochk, gab_ctl, ecobits;

ecobits = I915_READ(GAC_ECO_BITS);
I915_WRITE(GAC_ECO_BITS, ecobits | ECOBITS_PPGTT_CACHE64B);

gab_ctl = I915_READ(GAB_CTL);
I915_WRITE(GAB_CTL, gab_ctl | GAB_CTL_CONT_AFTER_PAGEFAULT);

ecochk = I915_READ(GAM_ECOCHK);
I915_WRITE(GAM_ECOCHK, ecochk | ECOCHK_SNB_BIT |
ECOCHK_PPGTT_CACHE64B);
I915_WRITE(GFX_MODE, _MASKED_BIT_ENABLE(GFX_PPGTT_ENABLE));
} else if (INTEL_INFO(dev)->gen >= 7) {
I915_WRITE(GAM_ECOCHK, ECOCHK_PPGTT_CACHE64B);
/* GFX_MODE is per-ring on gen7+ */
}

for_each_ring(ring, dev_priv, i) {
if (INTEL_INFO(dev)->gen >= 7)
I915_WRITE(RING_MODE_GEN7(ring),
_MASKED_BIT_ENABLE(GFX_PPGTT_ENABLE));

I915_WRITE(RING_PP_DIR_DCLV(ring), PP_DIR_DCLV_2G);
I915_WRITE(RING_PP_DIR_BASE(ring), pd_offset);
}
}

static bool
intel_enable_blt(struct drm_device *dev)
{
Expand Down
76 changes: 76 additions & 0 deletions drivers/gpu/drm/i915/i915_gem_gtt.c
Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,20 @@

typedef uint32_t gtt_pte_t;

/* PPGTT stuff */
#define GEN6_GTT_ADDR_ENCODE(addr) ((addr) | (((addr) >> 28) & 0xff0))

#define GEN6_PDE_VALID (1 << 0)
/* gen6+ has bit 11-4 for physical addr bit 39-32 */
#define GEN6_PDE_ADDR_ENCODE(addr) GEN6_GTT_ADDR_ENCODE(addr)

#define GEN6_PTE_VALID (1 << 0)
#define GEN6_PTE_UNCACHED (1 << 1)
#define HSW_PTE_UNCACHED (0)
#define GEN6_PTE_CACHE_LLC (2 << 1)
#define GEN6_PTE_CACHE_LLC_MLC (3 << 1)
#define GEN6_PTE_ADDR_ENCODE(addr) GEN6_GTT_ADDR_ENCODE(addr)

static inline gtt_pte_t pte_encode(struct drm_device *dev,
dma_addr_t addr,
enum i915_cache_level level)
Expand Down Expand Up @@ -262,6 +276,68 @@ void i915_ppgtt_unbind_object(struct i915_hw_ppgtt *ppgtt,
obj->base.size >> PAGE_SHIFT);
}

void i915_gem_init_ppgtt(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
uint32_t pd_offset;
struct intel_ring_buffer *ring;
struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt;
uint32_t __iomem *pd_addr;
uint32_t pd_entry;
int i;

if (!dev_priv->mm.aliasing_ppgtt)
return;


pd_addr = dev_priv->mm.gtt->gtt + ppgtt->pd_offset/sizeof(uint32_t);
for (i = 0; i < ppgtt->num_pd_entries; i++) {
dma_addr_t pt_addr;

if (dev_priv->mm.gtt->needs_dmar)
pt_addr = ppgtt->pt_dma_addr[i];
else
pt_addr = page_to_phys(ppgtt->pt_pages[i]);

pd_entry = GEN6_PDE_ADDR_ENCODE(pt_addr);
pd_entry |= GEN6_PDE_VALID;

writel(pd_entry, pd_addr + i);
}
readl(pd_addr);

pd_offset = ppgtt->pd_offset;
pd_offset /= 64; /* in cachelines, */
pd_offset <<= 16;

if (INTEL_INFO(dev)->gen == 6) {
uint32_t ecochk, gab_ctl, ecobits;

ecobits = I915_READ(GAC_ECO_BITS);
I915_WRITE(GAC_ECO_BITS, ecobits | ECOBITS_PPGTT_CACHE64B);

gab_ctl = I915_READ(GAB_CTL);
I915_WRITE(GAB_CTL, gab_ctl | GAB_CTL_CONT_AFTER_PAGEFAULT);

ecochk = I915_READ(GAM_ECOCHK);
I915_WRITE(GAM_ECOCHK, ecochk | ECOCHK_SNB_BIT |
ECOCHK_PPGTT_CACHE64B);
I915_WRITE(GFX_MODE, _MASKED_BIT_ENABLE(GFX_PPGTT_ENABLE));
} else if (INTEL_INFO(dev)->gen >= 7) {
I915_WRITE(GAM_ECOCHK, ECOCHK_PPGTT_CACHE64B);
/* GFX_MODE is per-ring on gen7+ */
}

for_each_ring(ring, dev_priv, i) {
if (INTEL_INFO(dev)->gen >= 7)
I915_WRITE(RING_MODE_GEN7(ring),
_MASKED_BIT_ENABLE(GFX_PPGTT_ENABLE));

I915_WRITE(RING_PP_DIR_DCLV(ring), PP_DIR_DCLV_2G);
I915_WRITE(RING_PP_DIR_BASE(ring), pd_offset);
}
}

static bool do_idling(struct drm_i915_private *dev_priv)
{
bool ret = dev_priv->mm.interruptible;
Expand Down
17 changes: 0 additions & 17 deletions drivers/gpu/drm/i915/i915_reg.h
Original file line number Diff line number Diff line change
Expand Up @@ -114,23 +114,6 @@
#define GEN6_GRDOM_MEDIA (1 << 2)
#define GEN6_GRDOM_BLT (1 << 3)

/* PPGTT stuff */
#define GEN6_GTT_ADDR_ENCODE(addr) ((addr) | (((addr) >> 28) & 0xff0))

#define GEN6_PDE_VALID (1 << 0)
#define GEN6_PDE_LARGE_PAGE (2 << 0) /* use 32kb pages */
/* gen6+ has bit 11-4 for physical addr bit 39-32 */
#define GEN6_PDE_ADDR_ENCODE(addr) GEN6_GTT_ADDR_ENCODE(addr)

#define GEN6_PTE_VALID (1 << 0)
#define GEN6_PTE_UNCACHED (1 << 1)
#define HSW_PTE_UNCACHED (0)
#define GEN6_PTE_CACHE_LLC (2 << 1)
#define GEN6_PTE_CACHE_LLC_MLC (3 << 1)
#define GEN6_PTE_CACHE_BITS (3 << 1)
#define GEN6_PTE_GFDT (1 << 3)
#define GEN6_PTE_ADDR_ENCODE(addr) GEN6_GTT_ADDR_ENCODE(addr)

#define RING_PP_DIR_BASE(ring) ((ring)->mmio_base+0x228)
#define RING_PP_DIR_BASE_READ(ring) ((ring)->mmio_base+0x518)
#define RING_PP_DIR_DCLV(ring) ((ring)->mmio_base+0x220)
Expand Down

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