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authorPatrik Jakobsson <patrik.r.jakobsson@gmail.com>2014-01-04 22:11:17 +0100
committerPatrik Jakobsson <patrik.r.jakobsson@gmail.com>2014-03-17 20:11:53 +0100
commitae012bdc5799aafe88798f864bc05e90778229af (patch)
treef0b8360d13c718d2f3180e6d1c516405c25c4812 /drivers/gpu/drm/gma500/psb_drv.c
parent1c6b5d17d6ed124afd55027a72d64b6f6eca501e (diff)
downloadlinux-ae012bdc5799aafe88798f864bc05e90778229af.tar.bz2
drm/gma500: Hook up the MMU
Properly init the MMU and add MMU entries when adding GTT entries Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/gma500/psb_drv.c')
-rw-r--r--drivers/gpu/drm/gma500/psb_drv.c27
1 files changed, 22 insertions, 5 deletions
diff --git a/drivers/gpu/drm/gma500/psb_drv.c b/drivers/gpu/drm/gma500/psb_drv.c
index 55eef4d6cef8..89804fddb852 100644
--- a/drivers/gpu/drm/gma500/psb_drv.c
+++ b/drivers/gpu/drm/gma500/psb_drv.c
@@ -192,12 +192,18 @@ static int psb_do_init(struct drm_device *dev)
PSB_WSGX32(0x00000000, PSB_CR_BIF_BANK0);
PSB_WSGX32(0x00000000, PSB_CR_BIF_BANK1);
PSB_RSGX32(PSB_CR_BIF_BANK1);
- PSB_WSGX32(PSB_RSGX32(PSB_CR_BIF_CTRL) | _PSB_MMU_ER_MASK,
- PSB_CR_BIF_CTRL);
+
+ /* Do not bypass any MMU access, let them pagefault instead */
+ PSB_WSGX32((PSB_RSGX32(PSB_CR_BIF_CTRL) & ~_PSB_MMU_ER_MASK),
+ PSB_CR_BIF_CTRL);
+ PSB_RSGX32(PSB_CR_BIF_CTRL);
+
psb_spank(dev_priv);
/* mmu_gatt ?? */
PSB_WSGX32(pg->gatt_start, PSB_CR_BIF_TWOD_REQ_BASE);
+ PSB_RSGX32(PSB_CR_BIF_TWOD_REQ_BASE); /* Post */
+
return 0;
out_err:
return ret;
@@ -277,6 +283,7 @@ static int psb_driver_load(struct drm_device *dev, unsigned long chipset)
int ret = -ENOMEM;
struct drm_connector *connector;
struct gma_encoder *gma_encoder;
+ struct psb_gtt *pg;
dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);
if (dev_priv == NULL)
@@ -286,6 +293,8 @@ static int psb_driver_load(struct drm_device *dev, unsigned long chipset)
dev_priv->dev = dev;
dev->dev_private = (void *) dev_priv;
+ pg = &dev_priv->gtt;
+
pci_set_master(dev->pdev);
dev_priv->num_pipe = dev_priv->ops->pipes;
@@ -355,13 +364,21 @@ static int psb_driver_load(struct drm_device *dev, unsigned long chipset)
if (!dev_priv->pf_pd)
goto out_err;
- psb_mmu_set_pd_context(psb_mmu_get_default_pd(dev_priv->mmu), 0);
- psb_mmu_set_pd_context(dev_priv->pf_pd, 1);
-
ret = psb_do_init(dev);
if (ret)
return ret;
+ /* Add stolen memory to SGX MMU */
+ down_read(&pg->sem);
+ ret = psb_mmu_insert_pfn_sequence(psb_mmu_get_default_pd(dev_priv->mmu),
+ dev_priv->stolen_base >> PAGE_SHIFT,
+ pg->gatt_start,
+ pg->stolen_size >> PAGE_SHIFT, 0);
+ up_read(&pg->sem);
+
+ psb_mmu_set_pd_context(psb_mmu_get_default_pd(dev_priv->mmu), 0);
+ psb_mmu_set_pd_context(dev_priv->pf_pd, 1);
+
PSB_WSGX32(0x20000000, PSB_CR_PDS_EXEC_BASE);
PSB_WSGX32(0x30000000, PSB_CR_BIF_3D_REQ_BASE);