drm/gma500: Move GEM memory management functions to gem.c

Move GEM functions from gtt.c to gem.c. Adapt some names. No
functional changes.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220308195222.13471-11-tzimmermann@suse.de

drivers/gpu/drm/gma500/gem.c

@@ -21,6 +21,10 @@
 #include "gem.h"
 #include "psb_drv.h"
 
+/*
+ * PSB GEM object
+ */
+
 int psb_gem_pin(struct psb_gem_object *pobj)
 {
 	struct drm_gem_object *obj = &pobj->base;
@@ -296,3 +300,132 @@ static vm_fault_t psb_gem_fault(struct vm_fault *vmf)
 
 	return ret;
 }
+
+/*
+ * Memory management
+ */
+
+/* Insert vram stolen pages into the GTT. */
+static void psb_gem_mm_populate_stolen(struct drm_psb_private *pdev)
+{
+	struct drm_device *dev = &pdev->dev;
+	unsigned int pfn_base;
+	unsigned int i, num_pages;
+	uint32_t pte;
+
+	pfn_base = pdev->stolen_base >> PAGE_SHIFT;
+	num_pages = pdev->vram_stolen_size >> PAGE_SHIFT;
+
+	drm_dbg(dev, "Set up %u stolen pages starting at 0x%08x, GTT offset %dK\n",
+		num_pages, pfn_base << PAGE_SHIFT, 0);
+
+	for (i = 0; i < num_pages; ++i) {
+		pte = psb_gtt_mask_pte(pfn_base + i, PSB_MMU_CACHED_MEMORY);
+		iowrite32(pte, pdev->gtt_map + i);
+	}
+
+	(void)ioread32(pdev->gtt_map + i - 1);
+}
+
+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_mutex_destroy;
+	}
+
+	psb_gem_mm_populate_stolen(dev_priv);
+
+	return 0;
+
+err_mutex_destroy:
+	mutex_destroy(&dev_priv->mmap_mutex);
+	return ret;
+}
+
+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);
+}
+
+/* Re-insert all pinned GEM objects into GTT. */
+static void psb_gem_mm_populate_resources(struct drm_psb_private *pdev)
+{
+	unsigned int restored = 0, total = 0, size = 0;
+	struct resource *r = pdev->gtt_mem->child;
+	struct drm_device *dev = &pdev->dev;
+	struct psb_gem_object *pobj;
+
+	while (r) {
+		/*
+		 * TODO: GTT restoration needs a refactoring, so that we don't have to touch
+		 *       struct psb_gem_object here. The type represents a GEM object and is
+		 *       not related to the GTT itself.
+		 */
+		pobj = container_of(r, struct psb_gem_object, resource);
+		if (pobj->pages) {
+			psb_gtt_insert_pages(pdev, &pobj->resource, pobj->pages);
+			size += resource_size(&pobj->resource);
+			++restored;
+		}
+		r = r->sibling;
+		++total;
+	}
+
+	drm_dbg(dev, "Restored %u of %u gtt ranges (%u KB)", restored, total, (size / 1024));
+}
+
+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_gem_mm_populate_stolen(dev_priv);
+	psb_gem_mm_populate_resources(dev_priv);
+
+	return 0;
+}

drivers/gpu/drm/gma500/gem.h

@@ -14,6 +14,10 @@
 
 struct drm_device;
 
+/*
+ * PSB GEM object
+ */
+
 struct psb_gem_object {
 	struct drm_gem_object base;
 
@@ -36,4 +40,12 @@ psb_gem_create(struct drm_device *dev, u64 size, const char *name, bool stolen,
 int psb_gem_pin(struct psb_gem_object *pobj);
 void psb_gem_unpin(struct psb_gem_object *pobj);
 
+/*
+ * Memory management
+ */
+
+int psb_gem_mm_init(struct drm_device *dev);
+void psb_gem_mm_fini(struct drm_device *dev);
+int psb_gem_mm_resume(struct drm_device *dev);
+
 #endif

drivers/gpu/drm/gma500/gtt.c

@@ -49,7 +49,7 @@ int psb_gtt_allocate_resource(struct drm_psb_private *pdev, struct resource *res
  *
  *	Set the GTT entry for the appropriate memory type.
  */
-static inline uint32_t psb_gtt_mask_pte(uint32_t pfn, int type)
+uint32_t psb_gtt_mask_pte(uint32_t pfn, int type)
 {
 	uint32_t mask = PSB_PTE_VALID;
 
@@ -125,15 +125,6 @@ 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);
@@ -164,55 +155,6 @@ static void psb_gtt_clear(struct drm_psb_private *pdev)
 	(void)ioread32(pdev->gtt_map + i - 1);
 }
 
-/* Insert vram stolen pages into the GTT. */
-static void psb_gtt_populate_stolen(struct drm_psb_private *pdev)
-{
-	struct drm_device *dev = &pdev->dev;
-	unsigned int pfn_base;
-	unsigned int i, num_pages;
-	uint32_t pte;
-
-	pfn_base = pdev->stolen_base >> PAGE_SHIFT;
-	num_pages = pdev->vram_stolen_size >> PAGE_SHIFT;
-
-	drm_dbg(dev, "Set up %u stolen pages starting at 0x%08x, GTT offset %dK\n",
-		num_pages, pfn_base << PAGE_SHIFT, 0);
-
-	for (i = 0; i < num_pages; ++i) {
-		pte = psb_gtt_mask_pte(pfn_base + i, PSB_MMU_CACHED_MEMORY);
-		iowrite32(pte, pdev->gtt_map + i);
-	}
-
-	(void)ioread32(pdev->gtt_map + i - 1);
-}
-
-/* Re-insert all pinned GEM objects into GTT. */
-static void psb_gtt_populate_resources(struct drm_psb_private *pdev)
-{
-	unsigned int restored = 0, total = 0, size = 0;
-	struct resource *r = pdev->gtt_mem->child;
-	struct drm_device *dev = &pdev->dev;
-	struct psb_gem_object *pobj;
-
-	while (r) {
-		/*
-		 * TODO: GTT restoration needs a refactoring, so that we don't have to touch
-		 *       struct psb_gem_object here. The type represents a GEM object and is
-		 *       not related to the GTT itself.
-		 */
-		pobj = container_of(r, struct psb_gem_object, resource);
-		if (pobj->pages) {
-			psb_gtt_insert_pages(pdev, &pobj->resource, pobj->pages);
-			size += resource_size(&pobj->resource);
-			++restored;
-		}
-		r = r->sibling;
-		++total;
-	}
-
-	drm_dbg(dev, "Restored %u of %u gtt ranges (%u KB)", restored, total, (size / 1024));
-}
-
 int psb_gtt_init(struct drm_device *dev)
 {
 	struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
@@ -300,45 +242,6 @@ int psb_gtt_init(struct drm_device *dev)
 	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_mutex_destroy;
-	}
-
-	psb_gtt_populate_stolen(dev_priv);
-
-	return 0;
-
-err_mutex_destroy:
-	mutex_destroy(&dev_priv->mmap_mutex);
-	return ret;
-}
-
 int psb_gtt_resume(struct drm_device *dev)
 {
 	struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
@@ -421,31 +324,3 @@ int psb_gtt_resume(struct drm_device *dev)
 	(void)PSB_RVDC32(PSB_PGETBL_CTL);
 	return ret;
 }
-
-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);
-	psb_gtt_populate_resources(dev_priv);
-
-	return 0;
-}

drivers/gpu/drm/gma500/gtt.h

@@ -33,12 +33,9 @@ int psb_gtt_allocate_resource(struct drm_psb_private *pdev, struct resource *res
 			      const char *name, resource_size_t size, resource_size_t align,
 			      bool stolen, u32 *offset);
 
+uint32_t psb_gtt_mask_pte(uint32_t pfn, int type);
 void psb_gtt_insert_pages(struct drm_psb_private *pdev, const struct resource *res,
 			  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);
-int psb_gem_mm_resume(struct drm_device *dev);
-
 #endif

drivers/gpu/drm/gma500/power.c

@@ -28,6 +28,7 @@
  *    Alan Cox <alan@linux.intel.com>
  */
 
+#include "gem.h"
 #include "power.h"
 #include "psb_drv.h"
 #include "psb_reg.h"

drivers/gpu/drm/gma500/psb_drv.c

@@ -28,6 +28,7 @@
 #include <drm/drm_vblank.h>
 
 #include "framebuffer.h"
+#include "gem.h"
 #include "intel_bios.h"
 #include "mid_bios.h"
 #include "power.h"