[PATCH v2 08/12] drm/gma500: Split GTT init/resume/fini into GTT and GEM functions
Thomas Zimmermann
tzimmermann at suse.de
Tue Mar 8 19:52:18 UTC 2022
The GTT init, fini and resume functions contain both, GTT and GEM,
code. Split each into a separate GTT and a GEM function. The GEM
code is responsible for mmap_mutex and the stolen memory area. The
rest of the functionality is left in GTT functions.
Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
Acked-by: Patrik Jakobsson <patrik.r.jakobsson at gmail.com>
---
drivers/gpu/drm/gma500/gtt.c | 118 ++++++++++++++++++++-----------
drivers/gpu/drm/gma500/gtt.h | 3 +
drivers/gpu/drm/gma500/psb_drv.c | 4 ++
3 files changed, 83 insertions(+), 42 deletions(-)
diff --git a/drivers/gpu/drm/gma500/gtt.c b/drivers/gpu/drm/gma500/gtt.c
index 99c644a5c5cb..0e99774c7e59 100644
--- a/drivers/gpu/drm/gma500/gtt.c
+++ b/drivers/gpu/drm/gma500/gtt.c
@@ -125,19 +125,26 @@ void psb_gtt_remove_pages(struct drm_psb_private *pdev, const struct resource *r
mutex_unlock(&pdev->gtt_mutex);
}
+void psb_gem_mm_fini(struct drm_device *dev)
+{
+ struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
+
+ iounmap(dev_priv->vram_addr);
+
+ mutex_destroy(&dev_priv->mmap_mutex);
+}
+
void psb_gtt_fini(struct drm_device *dev)
{
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
struct pci_dev *pdev = to_pci_dev(dev->dev);
- iounmap(dev_priv->vram_addr);
iounmap(dev_priv->gtt_map);
pci_write_config_word(pdev, PSB_GMCH_CTRL, dev_priv->gmch_ctrl);
PSB_WVDC32(dev_priv->pge_ctl, PSB_PGETBL_CTL);
(void)PSB_RVDC32(PSB_PGETBL_CTL);
- mutex_destroy(&dev_priv->mmap_mutex);
mutex_destroy(&dev_priv->gtt_mutex);
}
@@ -211,12 +218,10 @@ int psb_gtt_init(struct drm_device *dev)
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
struct pci_dev *pdev = to_pci_dev(dev->dev);
unsigned gtt_pages;
- unsigned long stolen_size, vram_stolen_size;
struct psb_gtt *pg;
int ret = 0;
mutex_init(&dev_priv->gtt_mutex);
- mutex_init(&dev_priv->mmap_mutex);
pg = &dev_priv->gtt;
@@ -274,22 +279,8 @@ int psb_gtt_init(struct drm_device *dev)
dev_priv->gtt_mem = &fudge;
}
- pci_read_config_dword(pdev, PSB_BSM, &dev_priv->stolen_base);
- vram_stolen_size = pg->gtt_phys_start - dev_priv->stolen_base
- - PAGE_SIZE;
-
- stolen_size = vram_stolen_size;
-
- dev_dbg(dev->dev, "Stolen memory base 0x%x, size %luK\n",
- dev_priv->stolen_base, vram_stolen_size / 1024);
-
pg->gtt_pages = gtt_pages;
- pg->stolen_size = stolen_size;
- dev_priv->vram_stolen_size = vram_stolen_size;
- /*
- * Map the GTT and the stolen memory area
- */
dev_priv->gtt_map = ioremap(pg->gtt_phys_start, gtt_pages << PAGE_SHIFT);
if (!dev_priv->gtt_map) {
dev_err(dev->dev, "Failure to map gtt.\n");
@@ -297,26 +288,54 @@ int psb_gtt_init(struct drm_device *dev)
goto err_gtt_disable;
}
+ psb_gtt_clear(dev_priv);
+
+ return 0;
+
+err_gtt_disable:
+ pci_write_config_word(pdev, PSB_GMCH_CTRL, dev_priv->gmch_ctrl);
+ PSB_WVDC32(dev_priv->pge_ctl, PSB_PGETBL_CTL);
+ (void)PSB_RVDC32(PSB_PGETBL_CTL);
+ mutex_destroy(&dev_priv->gtt_mutex);
+ return ret;
+}
+
+int psb_gem_mm_init(struct drm_device *dev)
+{
+ struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
+ struct pci_dev *pdev = to_pci_dev(dev->dev);
+ unsigned long stolen_size, vram_stolen_size;
+ struct psb_gtt *pg;
+ int ret;
+
+ mutex_init(&dev_priv->mmap_mutex);
+
+ pg = &dev_priv->gtt;
+
+ pci_read_config_dword(pdev, PSB_BSM, &dev_priv->stolen_base);
+ vram_stolen_size = pg->gtt_phys_start - dev_priv->stolen_base - PAGE_SIZE;
+
+ stolen_size = vram_stolen_size;
+
+ dev_dbg(dev->dev, "Stolen memory base 0x%x, size %luK\n",
+ dev_priv->stolen_base, vram_stolen_size / 1024);
+
+ pg->stolen_size = stolen_size;
+ dev_priv->vram_stolen_size = vram_stolen_size;
+
dev_priv->vram_addr = ioremap_wc(dev_priv->stolen_base, stolen_size);
if (!dev_priv->vram_addr) {
dev_err(dev->dev, "Failure to map stolen base.\n");
ret = -ENOMEM;
- goto err_iounmap;
+ goto err_mutex_destroy;
}
- psb_gtt_clear(dev_priv);
psb_gtt_populate_stolen(dev_priv);
return 0;
-err_iounmap:
- iounmap(dev_priv->gtt_map);
-err_gtt_disable:
- pci_write_config_word(pdev, PSB_GMCH_CTRL, dev_priv->gmch_ctrl);
- PSB_WVDC32(dev_priv->pge_ctl, PSB_PGETBL_CTL);
- (void)PSB_RVDC32(PSB_PGETBL_CTL);
+err_mutex_destroy:
mutex_destroy(&dev_priv->mmap_mutex);
- mutex_destroy(&dev_priv->gtt_mutex);
return ret;
}
@@ -325,9 +344,8 @@ static int psb_gtt_resume(struct drm_device *dev)
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
struct pci_dev *pdev = to_pci_dev(dev->dev);
unsigned int gtt_pages;
- unsigned long stolen_size, vram_stolen_size;
struct psb_gtt *pg;
- int ret = 0;
+ int ret;
pg = &dev_priv->gtt;
@@ -387,27 +405,15 @@ static int psb_gtt_resume(struct drm_device *dev)
dev_priv->gtt_mem = &fudge;
}
- pci_read_config_dword(pdev, PSB_BSM, &dev_priv->stolen_base);
- vram_stolen_size = pg->gtt_phys_start - dev_priv->stolen_base - PAGE_SIZE;
- stolen_size = vram_stolen_size;
-
- dev_dbg(dev->dev, "Stolen memory base 0x%x, size %luK\n",
- dev_priv->stolen_base, vram_stolen_size / 1024);
-
- if ((gtt_pages != pg->gtt_pages) && (stolen_size != pg->stolen_size)) {
+ if (gtt_pages != pg->gtt_pages) {
dev_err(dev->dev, "GTT resume error.\n");
ret = -EINVAL;
goto err_gtt_disable;
}
pg->gtt_pages = gtt_pages;
- pg->stolen_size = stolen_size;
- dev_priv->vram_stolen_size = vram_stolen_size;
psb_gtt_clear(dev_priv);
- psb_gtt_populate_stolen(dev_priv);
-
- return 0;
err_gtt_disable:
pci_write_config_word(pdev, PSB_GMCH_CTRL, dev_priv->gmch_ctrl);
@@ -416,11 +422,39 @@ static int psb_gtt_resume(struct drm_device *dev)
return ret;
}
+static int psb_gem_mm_resume(struct drm_device *dev)
+{
+ struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
+ struct pci_dev *pdev = to_pci_dev(dev->dev);
+ unsigned long stolen_size, vram_stolen_size;
+ struct psb_gtt *pg;
+
+ pg = &dev_priv->gtt;
+
+ pci_read_config_dword(pdev, PSB_BSM, &dev_priv->stolen_base);
+ vram_stolen_size = pg->gtt_phys_start - dev_priv->stolen_base - PAGE_SIZE;
+
+ stolen_size = vram_stolen_size;
+
+ dev_dbg(dev->dev, "Stolen memory base 0x%x, size %luK\n", dev_priv->stolen_base,
+ vram_stolen_size / 1024);
+
+ if (stolen_size != pg->stolen_size) {
+ dev_err(dev->dev, "GTT resume error.\n");
+ return -EINVAL;
+ }
+
+ psb_gtt_populate_stolen(dev_priv);
+
+ return 0;
+}
+
int psb_gtt_restore(struct drm_device *dev)
{
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
psb_gtt_resume(dev);
+ psb_gem_mm_resume(dev);
psb_gtt_populate_resources(dev_priv);
diff --git a/drivers/gpu/drm/gma500/gtt.h b/drivers/gpu/drm/gma500/gtt.h
index 5839d5d06adc..45e1926dfce1 100644
--- a/drivers/gpu/drm/gma500/gtt.h
+++ b/drivers/gpu/drm/gma500/gtt.h
@@ -37,4 +37,7 @@ void psb_gtt_insert_pages(struct drm_psb_private *pdev, const struct resource *r
struct page **pages);
void psb_gtt_remove_pages(struct drm_psb_private *pdev, const struct resource *res);
+int psb_gem_mm_init(struct drm_device *dev);
+void psb_gem_mm_fini(struct drm_device *dev);
+
#endif
diff --git a/drivers/gpu/drm/gma500/psb_drv.c b/drivers/gpu/drm/gma500/psb_drv.c
index 41be6e1ac7f9..6547967b51e1 100644
--- a/drivers/gpu/drm/gma500/psb_drv.c
+++ b/drivers/gpu/drm/gma500/psb_drv.c
@@ -192,6 +192,7 @@ static void psb_driver_unload(struct drm_device *dev)
psb_mmu_driver_takedown(dev_priv->mmu);
dev_priv->mmu = NULL;
}
+ psb_gem_mm_fini(dev);
psb_gtt_fini(dev);
if (dev_priv->scratch_page) {
set_pages_wb(dev_priv->scratch_page, 1);
@@ -325,6 +326,9 @@ static int psb_driver_load(struct drm_device *dev, unsigned long flags)
set_pages_uc(dev_priv->scratch_page, 1);
ret = psb_gtt_init(dev);
+ if (ret)
+ goto out_err;
+ ret = psb_gem_mm_init(dev);
if (ret)
goto out_err;
--
2.35.1
More information about the dri-devel
mailing list