agp/intel: Rename intel-gtt symbols

Exporting the symbols like intel_gtt_* creates some confusion inside
i915 that has symbols named similarly. In an attempt to isolate
platforms needing intel-gtt.ko, commit 7a5c9223 ("drm/i915/gt: Split
intel-gtt functions by arch") moved way too much
inside gt/intel_gt_gmch.c, even the functions that don't callout to this
module. Rename the symbols to make the separation clear.
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220617230559.2109427-1-lucas.demarchi@intel.com

drivers/char/agp/intel-gtt.c

@@ -744,7 +744,7 @@ static void i830_write_entry(dma_addr_t addr, unsigned int entry,
 	writel_relaxed(addr | pte_flags, intel_private.gtt + entry);
 }
 
-bool intel_enable_gtt(void)
+bool intel_gmch_enable_gtt(void)
 {
 	u8 __iomem *reg;
 
@@ -787,7 +787,7 @@ bool intel_enable_gtt(void)
 
 	return true;
 }
-EXPORT_SYMBOL(intel_enable_gtt);
+EXPORT_SYMBOL(intel_gmch_enable_gtt);
 
 static int i830_setup(void)
 {
@@ -821,8 +821,8 @@ static int intel_fake_agp_free_gatt_table(struct agp_bridge_data *bridge)
 
 static int intel_fake_agp_configure(void)
 {
-	if (!intel_enable_gtt())
-	    return -EIO;
+	if (!intel_gmch_enable_gtt())
+		return -EIO;
 
 	intel_private.clear_fake_agp = true;
 	agp_bridge->gart_bus_addr = intel_private.gma_bus_addr;
@@ -844,20 +844,20 @@ static bool i830_check_flags(unsigned int flags)
 	return false;
 }
 
-void intel_gtt_insert_page(dma_addr_t addr,
-			   unsigned int pg,
-			   unsigned int flags)
+void intel_gmch_gtt_insert_page(dma_addr_t addr,
+				unsigned int pg,
+				unsigned int flags)
 {
 	intel_private.driver->write_entry(addr, pg, flags);
 	readl(intel_private.gtt + pg);
 	if (intel_private.driver->chipset_flush)
 		intel_private.driver->chipset_flush();
 }
-EXPORT_SYMBOL(intel_gtt_insert_page);
+EXPORT_SYMBOL(intel_gmch_gtt_insert_page);
 
-void intel_gtt_insert_sg_entries(struct sg_table *st,
-				 unsigned int pg_start,
-				 unsigned int flags)
+void intel_gmch_gtt_insert_sg_entries(struct sg_table *st,
+				      unsigned int pg_start,
+				      unsigned int flags)
 {
 	struct scatterlist *sg;
 	unsigned int len, m;
@@ -879,13 +879,13 @@ void intel_gtt_insert_sg_entries(struct sg_table *st,
 	if (intel_private.driver->chipset_flush)
 		intel_private.driver->chipset_flush();
 }
-EXPORT_SYMBOL(intel_gtt_insert_sg_entries);
+EXPORT_SYMBOL(intel_gmch_gtt_insert_sg_entries);
 
 #if IS_ENABLED(CONFIG_AGP_INTEL)
-static void intel_gtt_insert_pages(unsigned int first_entry,
-				   unsigned int num_entries,
-				   struct page **pages,
-				   unsigned int flags)
+static void intel_gmch_gtt_insert_pages(unsigned int first_entry,
+					unsigned int num_entries,
+					struct page **pages,
+					unsigned int flags)
 {
 	int i, j;
 
@@ -905,7 +905,7 @@ static int intel_fake_agp_insert_entries(struct agp_memory *mem,
 	if (intel_private.clear_fake_agp) {
 		int start = intel_private.stolen_size / PAGE_SIZE;
 		int end = intel_private.gtt_mappable_entries;
-		intel_gtt_clear_range(start, end - start);
+		intel_gmch_gtt_clear_range(start, end - start);
 		intel_private.clear_fake_agp = false;
 	}
 
@@ -934,12 +934,12 @@ static int intel_fake_agp_insert_entries(struct agp_memory *mem,
 		if (ret != 0)
 			return ret;
 
-		intel_gtt_insert_sg_entries(&st, pg_start, type);
+		intel_gmch_gtt_insert_sg_entries(&st, pg_start, type);
 		mem->sg_list = st.sgl;
 		mem->num_sg = st.nents;
 	} else
-		intel_gtt_insert_pages(pg_start, mem->page_count, mem->pages,
-				       type);
+		intel_gmch_gtt_insert_pages(pg_start, mem->page_count, mem->pages,
+					    type);
 
 out:
 	ret = 0;
@@ -949,7 +949,7 @@ static int intel_fake_agp_insert_entries(struct agp_memory *mem,
 }
 #endif
 
-void intel_gtt_clear_range(unsigned int first_entry, unsigned int num_entries)
+void intel_gmch_gtt_clear_range(unsigned int first_entry, unsigned int num_entries)
 {
 	unsigned int i;
 
@@ -959,7 +959,7 @@ void intel_gtt_clear_range(unsigned int first_entry, unsigned int num_entries)
 	}
 	wmb();
 }
-EXPORT_SYMBOL(intel_gtt_clear_range);
+EXPORT_SYMBOL(intel_gmch_gtt_clear_range);
 
 #if IS_ENABLED(CONFIG_AGP_INTEL)
 static int intel_fake_agp_remove_entries(struct agp_memory *mem,
@@ -968,7 +968,7 @@ static int intel_fake_agp_remove_entries(struct agp_memory *mem,
 	if (mem->page_count == 0)
 		return 0;
 
-	intel_gtt_clear_range(pg_start, mem->page_count);
+	intel_gmch_gtt_clear_range(pg_start, mem->page_count);
 
 	if (intel_private.needs_dmar) {
 		intel_gtt_unmap_memory(mem->sg_list, mem->num_sg);
@@ -1431,22 +1431,22 @@ int intel_gmch_probe(struct pci_dev *bridge_pdev, struct pci_dev *gpu_pdev,
 }
 EXPORT_SYMBOL(intel_gmch_probe);
 
-void intel_gtt_get(u64 *gtt_total,
-		   phys_addr_t *mappable_base,
-		   resource_size_t *mappable_end)
+void intel_gmch_gtt_get(u64 *gtt_total,
+			phys_addr_t *mappable_base,
+			resource_size_t *mappable_end)
 {
 	*gtt_total = intel_private.gtt_total_entries << PAGE_SHIFT;
 	*mappable_base = intel_private.gma_bus_addr;
 	*mappable_end = intel_private.gtt_mappable_entries << PAGE_SHIFT;
 }
-EXPORT_SYMBOL(intel_gtt_get);
+EXPORT_SYMBOL(intel_gmch_gtt_get);
 
-void intel_gtt_chipset_flush(void)
+void intel_gmch_gtt_flush(void)
 {
 	if (intel_private.driver->chipset_flush)
 		intel_private.driver->chipset_flush();
 }
-EXPORT_SYMBOL(intel_gtt_chipset_flush);
+EXPORT_SYMBOL(intel_gmch_gtt_flush);
 
 void intel_gmch_remove(void)
 {

drivers/gpu/drm/i915/gt/intel_gt_gmch.c

@@ -134,7 +134,7 @@ static void gen5_ggtt_insert_page(struct i915_address_space *vm,
 	unsigned int flags = (cache_level == I915_CACHE_NONE) ?
 		AGP_USER_MEMORY : AGP_USER_CACHED_MEMORY;
 
-	intel_gtt_insert_page(addr, offset >> PAGE_SHIFT, flags);
+	intel_gmch_gtt_insert_page(addr, offset >> PAGE_SHIFT, flags);
 }
 
 static void gen6_ggtt_insert_page(struct i915_address_space *vm,
@@ -175,8 +175,8 @@ static void gen5_ggtt_insert_entries(struct i915_address_space *vm,
 	unsigned int flags = (cache_level == I915_CACHE_NONE) ?
 		AGP_USER_MEMORY : AGP_USER_CACHED_MEMORY;
 
-	intel_gtt_insert_sg_entries(vma_res->bi.pages, vma_res->start >> PAGE_SHIFT,
-				    flags);
+	intel_gmch_gtt_insert_sg_entries(vma_res->bi.pages, vma_res->start >> PAGE_SHIFT,
+					 flags);
 }
 
 /*
@@ -306,18 +306,18 @@ static void bxt_vtd_ggtt_insert_entries__BKL(struct i915_address_space *vm,
 
 void intel_gt_gmch_gen5_chipset_flush(struct intel_gt *gt)
 {
-	intel_gtt_chipset_flush();
+	intel_gmch_gtt_flush();
 }
 
 static void gmch_ggtt_invalidate(struct i915_ggtt *ggtt)
 {
-	intel_gtt_chipset_flush();
+	intel_gmch_gtt_flush();
 }
 
 static void gen5_ggtt_clear_range(struct i915_address_space *vm,
 					 u64 start, u64 length)
 {
-	intel_gtt_clear_range(start >> PAGE_SHIFT, length >> PAGE_SHIFT);
+	intel_gmch_gtt_clear_range(start >> PAGE_SHIFT, length >> PAGE_SHIFT);
 }
 
 static void gen6_ggtt_clear_range(struct i915_address_space *vm,
@@ -494,7 +494,7 @@ int intel_gt_gmch_gen5_probe(struct i915_ggtt *ggtt)
 		return -EIO;
 	}
 
-	intel_gtt_get(&ggtt->vm.total, &gmadr_base, &ggtt->mappable_end);
+	intel_gmch_gtt_get(&ggtt->vm.total, &gmadr_base, &ggtt->mappable_end);
 
 	ggtt->gmadr =
 		(struct resource)DEFINE_RES_MEM(gmadr_base, ggtt->mappable_end);
@@ -647,7 +647,7 @@ int intel_gt_gmch_gen8_probe(struct i915_ggtt *ggtt)
 
 int intel_gt_gmch_gen5_enable_hw(struct drm_i915_private *i915)
 {
-	if (GRAPHICS_VER(i915) < 6 && !intel_enable_gtt())
+	if (GRAPHICS_VER(i915) < 6 && !intel_gmch_enable_gtt())
 		return -EIO;
 
 	return 0;

include/drm/intel-gtt.h

@@ -10,24 +10,24 @@ struct agp_bridge_data;
 struct pci_dev;
 struct sg_table;
 
-void intel_gtt_get(u64 *gtt_total,
-		   phys_addr_t *mappable_base,
-		   resource_size_t *mappable_end);
+void intel_gmch_gtt_get(u64 *gtt_total,
+			phys_addr_t *mappable_base,
+			resource_size_t *mappable_end);
 
 int intel_gmch_probe(struct pci_dev *bridge_pdev, struct pci_dev *gpu_pdev,
 		     struct agp_bridge_data *bridge);
 void intel_gmch_remove(void);
 
-bool intel_enable_gtt(void);
+bool intel_gmch_enable_gtt(void);
 
-void intel_gtt_chipset_flush(void);
-void intel_gtt_insert_page(dma_addr_t addr,
-			   unsigned int pg,
-			   unsigned int flags);
-void intel_gtt_insert_sg_entries(struct sg_table *st,
-				 unsigned int pg_start,
-				 unsigned int flags);
-void intel_gtt_clear_range(unsigned int first_entry, unsigned int num_entries);
+void intel_gmch_gtt_flush(void);
+void intel_gmch_gtt_insert_page(dma_addr_t addr,
+				unsigned int pg,
+				unsigned int flags);
+void intel_gmch_gtt_insert_sg_entries(struct sg_table *st,
+				      unsigned int pg_start,
+				      unsigned int flags);
+void intel_gmch_gtt_clear_range(unsigned int first_entry, unsigned int num_entries);
 
 /* Special gtt memory types */
 #define AGP_DCACHE_MEMORY	1