From 440fd5283a87345cdd4237bdf45fb01130ea0056 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 23 Jan 2015 09:05:06 +0100 Subject: [PATCH] drm/mm: Support 4 GiB and larger ranges The current implementation is limited by the number of addresses that fit into an unsigned long. This causes problems on 32-bit Tegra where unsigned long is 32-bit but drm_mm is used to manage an IOVA space of 4 GiB. Given the 32-bit limitation, the range is limited to 4 GiB - 1 (or 4 GiB - 4 KiB for page granularity). This commit changes the start and size of the range to be an unsigned 64-bit integer, thus allowing much larger ranges to be supported. [airlied: fix i915 warnings and coloring callback] Signed-off-by: Thierry Reding Reviewed-by: Alex Deucher Reviewed-by: Chris Wilson Signed-off-by: Dave Airlie fixupo --- drivers/gpu/drm/drm_mm.c | 152 +++++++++++++++------------- drivers/gpu/drm/i915/i915_debugfs.c | 4 +- drivers/gpu/drm/i915/i915_gem_gtt.c | 6 +- include/drm/drm_mm.h | 52 +++++----- 4 files changed, 110 insertions(+), 104 deletions(-) diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c index 04a209e2b66d..7fc6f8bd4821 100644 --- a/drivers/gpu/drm/drm_mm.c +++ b/drivers/gpu/drm/drm_mm.c @@ -91,29 +91,29 @@ */ static struct drm_mm_node *drm_mm_search_free_generic(const struct drm_mm *mm, - unsigned long size, + u64 size, unsigned alignment, unsigned long color, enum drm_mm_search_flags flags); static struct drm_mm_node *drm_mm_search_free_in_range_generic(const struct drm_mm *mm, - unsigned long size, + u64 size, unsigned alignment, unsigned long color, - unsigned long start, - unsigned long end, + u64 start, + u64 end, enum drm_mm_search_flags flags); static void drm_mm_insert_helper(struct drm_mm_node *hole_node, struct drm_mm_node *node, - unsigned long size, unsigned alignment, + u64 size, unsigned alignment, unsigned long color, enum drm_mm_allocator_flags flags) { struct drm_mm *mm = hole_node->mm; - unsigned long hole_start = drm_mm_hole_node_start(hole_node); - unsigned long hole_end = drm_mm_hole_node_end(hole_node); - unsigned long adj_start = hole_start; - unsigned long adj_end = hole_end; + u64 hole_start = drm_mm_hole_node_start(hole_node); + u64 hole_end = drm_mm_hole_node_end(hole_node); + u64 adj_start = hole_start; + u64 adj_end = hole_end; BUG_ON(node->allocated); @@ -124,12 +124,15 @@ static void drm_mm_insert_helper(struct drm_mm_node *hole_node, adj_start = adj_end - size; if (alignment) { - unsigned tmp = adj_start % alignment; - if (tmp) { + u64 tmp = adj_start; + unsigned rem; + + rem = do_div(tmp, alignment); + if (rem) { if (flags & DRM_MM_CREATE_TOP) - adj_start -= tmp; + adj_start -= rem; else - adj_start += alignment - tmp; + adj_start += alignment - rem; } } @@ -176,9 +179,9 @@ static void drm_mm_insert_helper(struct drm_mm_node *hole_node, int drm_mm_reserve_node(struct drm_mm *mm, struct drm_mm_node *node) { struct drm_mm_node *hole; - unsigned long end = node->start + node->size; - unsigned long hole_start; - unsigned long hole_end; + u64 end = node->start + node->size; + u64 hole_start; + u64 hole_end; BUG_ON(node == NULL); @@ -227,7 +230,7 @@ EXPORT_SYMBOL(drm_mm_reserve_node); * 0 on success, -ENOSPC if there's no suitable hole. */ int drm_mm_insert_node_generic(struct drm_mm *mm, struct drm_mm_node *node, - unsigned long size, unsigned alignment, + u64 size, unsigned alignment, unsigned long color, enum drm_mm_search_flags sflags, enum drm_mm_allocator_flags aflags) @@ -246,16 +249,16 @@ EXPORT_SYMBOL(drm_mm_insert_node_generic); static void drm_mm_insert_helper_range(struct drm_mm_node *hole_node, struct drm_mm_node *node, - unsigned long size, unsigned alignment, + u64 size, unsigned alignment, unsigned long color, - unsigned long start, unsigned long end, + u64 start, u64 end, enum drm_mm_allocator_flags flags) { struct drm_mm *mm = hole_node->mm; - unsigned long hole_start = drm_mm_hole_node_start(hole_node); - unsigned long hole_end = drm_mm_hole_node_end(hole_node); - unsigned long adj_start = hole_start; - unsigned long adj_end = hole_end; + u64 hole_start = drm_mm_hole_node_start(hole_node); + u64 hole_end = drm_mm_hole_node_end(hole_node); + u64 adj_start = hole_start; + u64 adj_end = hole_end; BUG_ON(!hole_node->hole_follows || node->allocated); @@ -271,12 +274,15 @@ static void drm_mm_insert_helper_range(struct drm_mm_node *hole_node, mm->color_adjust(hole_node, color, &adj_start, &adj_end); if (alignment) { - unsigned tmp = adj_start % alignment; - if (tmp) { + u64 tmp = adj_start; + unsigned rem; + + rem = do_div(tmp, alignment); + if (rem) { if (flags & DRM_MM_CREATE_TOP) - adj_start -= tmp; + adj_start -= rem; else - adj_start += alignment - tmp; + adj_start += alignment - rem; } } @@ -324,9 +330,9 @@ static void drm_mm_insert_helper_range(struct drm_mm_node *hole_node, * 0 on success, -ENOSPC if there's no suitable hole. */ int drm_mm_insert_node_in_range_generic(struct drm_mm *mm, struct drm_mm_node *node, - unsigned long size, unsigned alignment, + u64 size, unsigned alignment, unsigned long color, - unsigned long start, unsigned long end, + u64 start, u64 end, enum drm_mm_search_flags sflags, enum drm_mm_allocator_flags aflags) { @@ -387,32 +393,34 @@ void drm_mm_remove_node(struct drm_mm_node *node) } EXPORT_SYMBOL(drm_mm_remove_node); -static int check_free_hole(unsigned long start, unsigned long end, - unsigned long size, unsigned alignment) +static int check_free_hole(u64 start, u64 end, u64 size, unsigned alignment) { if (end - start < size) return 0; if (alignment) { - unsigned tmp = start % alignment; + u64 tmp = start; + unsigned rem; + + rem = do_div(tmp, alignment); if (tmp) - start += alignment - tmp; + start += alignment - rem; } return end >= start + size; } static struct drm_mm_node *drm_mm_search_free_generic(const struct drm_mm *mm, - unsigned long size, + u64 size, unsigned alignment, unsigned long color, enum drm_mm_search_flags flags) { struct drm_mm_node *entry; struct drm_mm_node *best; - unsigned long adj_start; - unsigned long adj_end; - unsigned long best_size; + u64 adj_start; + u64 adj_end; + u64 best_size; BUG_ON(mm->scanned_blocks); @@ -421,7 +429,7 @@ static struct drm_mm_node *drm_mm_search_free_generic(const struct drm_mm *mm, __drm_mm_for_each_hole(entry, mm, adj_start, adj_end, flags & DRM_MM_SEARCH_BELOW) { - unsigned long hole_size = adj_end - adj_start; + u64 hole_size = adj_end - adj_start; if (mm->color_adjust) { mm->color_adjust(entry, color, &adj_start, &adj_end); @@ -445,18 +453,18 @@ static struct drm_mm_node *drm_mm_search_free_generic(const struct drm_mm *mm, } static struct drm_mm_node *drm_mm_search_free_in_range_generic(const struct drm_mm *mm, - unsigned long size, + u64 size, unsigned alignment, unsigned long color, - unsigned long start, - unsigned long end, + u64 start, + u64 end, enum drm_mm_search_flags flags) { struct drm_mm_node *entry; struct drm_mm_node *best; - unsigned long adj_start; - unsigned long adj_end; - unsigned long best_size; + u64 adj_start; + u64 adj_end; + u64 best_size; BUG_ON(mm->scanned_blocks); @@ -465,7 +473,7 @@ static struct drm_mm_node *drm_mm_search_free_in_range_generic(const struct drm_ __drm_mm_for_each_hole(entry, mm, adj_start, adj_end, flags & DRM_MM_SEARCH_BELOW) { - unsigned long hole_size = adj_end - adj_start; + u64 hole_size = adj_end - adj_start; if (adj_start < start) adj_start = start; @@ -561,7 +569,7 @@ EXPORT_SYMBOL(drm_mm_replace_node); * adding/removing nodes to/from the scan list are allowed. */ void drm_mm_init_scan(struct drm_mm *mm, - unsigned long size, + u64 size, unsigned alignment, unsigned long color) { @@ -594,11 +602,11 @@ EXPORT_SYMBOL(drm_mm_init_scan); * adding/removing nodes to/from the scan list are allowed. */ void drm_mm_init_scan_with_range(struct drm_mm *mm, - unsigned long size, + u64 size, unsigned alignment, unsigned long color, - unsigned long start, - unsigned long end) + u64 start, + u64 end) { mm->scan_color = color; mm->scan_alignment = alignment; @@ -627,8 +635,8 @@ bool drm_mm_scan_add_block(struct drm_mm_node *node) { struct drm_mm *mm = node->mm; struct drm_mm_node *prev_node; - unsigned long hole_start, hole_end; - unsigned long adj_start, adj_end; + u64 hole_start, hole_end; + u64 adj_start, adj_end; mm->scanned_blocks++; @@ -731,7 +739,7 @@ EXPORT_SYMBOL(drm_mm_clean); * * Note that @mm must be cleared to 0 before calling this function. */ -void drm_mm_init(struct drm_mm * mm, unsigned long start, unsigned long size) +void drm_mm_init(struct drm_mm * mm, u64 start, u64 size) { INIT_LIST_HEAD(&mm->hole_stack); mm->scanned_blocks = 0; @@ -766,18 +774,17 @@ void drm_mm_takedown(struct drm_mm * mm) } EXPORT_SYMBOL(drm_mm_takedown); -static unsigned long drm_mm_debug_hole(struct drm_mm_node *entry, - const char *prefix) +static u64 drm_mm_debug_hole(struct drm_mm_node *entry, + const char *prefix) { - unsigned long hole_start, hole_end, hole_size; + u64 hole_start, hole_end, hole_size; if (entry->hole_follows) { hole_start = drm_mm_hole_node_start(entry); hole_end = drm_mm_hole_node_end(entry); hole_size = hole_end - hole_start; - printk(KERN_DEBUG "%s 0x%08lx-0x%08lx: %8lu: free\n", - prefix, hole_start, hole_end, - hole_size); + pr_debug("%s %#llx-%#llx: %llu: free\n", prefix, hole_start, + hole_end, hole_size); return hole_size; } @@ -792,35 +799,34 @@ static unsigned long drm_mm_debug_hole(struct drm_mm_node *entry, void drm_mm_debug_table(struct drm_mm *mm, const char *prefix) { struct drm_mm_node *entry; - unsigned long total_used = 0, total_free = 0, total = 0; + u64 total_used = 0, total_free = 0, total = 0; total_free += drm_mm_debug_hole(&mm->head_node, prefix); drm_mm_for_each_node(entry, mm) { - printk(KERN_DEBUG "%s 0x%08lx-0x%08lx: %8lu: used\n", - prefix, entry->start, entry->start + entry->size, - entry->size); + pr_debug("%s %#llx-%#llx: %llu: used\n", prefix, entry->start, + entry->start + entry->size, entry->size); total_used += entry->size; total_free += drm_mm_debug_hole(entry, prefix); } total = total_free + total_used; - printk(KERN_DEBUG "%s total: %lu, used %lu free %lu\n", prefix, total, - total_used, total_free); + pr_debug("%s total: %llu, used %llu free %llu\n", prefix, total, + total_used, total_free); } EXPORT_SYMBOL(drm_mm_debug_table); #if defined(CONFIG_DEBUG_FS) -static unsigned long drm_mm_dump_hole(struct seq_file *m, struct drm_mm_node *entry) +static u64 drm_mm_dump_hole(struct seq_file *m, struct drm_mm_node *entry) { - unsigned long hole_start, hole_end, hole_size; + u64 hole_start, hole_end, hole_size; if (entry->hole_follows) { hole_start = drm_mm_hole_node_start(entry); hole_end = drm_mm_hole_node_end(entry); hole_size = hole_end - hole_start; - seq_printf(m, "0x%08lx-0x%08lx: 0x%08lx: free\n", - hole_start, hole_end, hole_size); + seq_printf(m, "%#llx-%#llx: %llu: free\n", hole_start, + hole_end, hole_size); return hole_size; } @@ -835,20 +841,20 @@ static unsigned long drm_mm_dump_hole(struct seq_file *m, struct drm_mm_node *en int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm) { struct drm_mm_node *entry; - unsigned long total_used = 0, total_free = 0, total = 0; + u64 total_used = 0, total_free = 0, total = 0; total_free += drm_mm_dump_hole(m, &mm->head_node); drm_mm_for_each_node(entry, mm) { - seq_printf(m, "0x%08lx-0x%08lx: 0x%08lx: used\n", - entry->start, entry->start + entry->size, - entry->size); + seq_printf(m, "%#016llx-%#016llx: %llu: used\n", entry->start, + entry->start + entry->size, entry->size); total_used += entry->size; total_free += drm_mm_dump_hole(m, entry); } total = total_free + total_used; - seq_printf(m, "total: %lu, used %lu free %lu\n", total, total_used, total_free); + seq_printf(m, "total: %llu, used %llu free %llu\n", total, + total_used, total_free); return 0; } EXPORT_SYMBOL(drm_mm_dump_table); diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 96e811fe24ca..e8b18e542da4 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -152,12 +152,12 @@ describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj) seq_puts(m, " (pp"); else seq_puts(m, " (g"); - seq_printf(m, "gtt offset: %08lx, size: %08lx, type: %u)", + seq_printf(m, "gtt offset: %08llx, size: %08llx, type: %u)", vma->node.start, vma->node.size, vma->ggtt_view.type); } if (obj->stolen) - seq_printf(m, " (stolen: %08lx)", obj->stolen->start); + seq_printf(m, " (stolen: %08llx)", obj->stolen->start); if (obj->pin_mappable || obj->fault_mappable) { char s[3], *t = s; if (obj->pin_mappable) diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 746f77fb57a3..dccdc8aad2e2 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -1145,7 +1145,7 @@ static int gen6_ppgtt_init(struct i915_hw_ppgtt *ppgtt) ppgtt->base.clear_range(&ppgtt->base, 0, ppgtt->base.total, true); - DRM_DEBUG_DRIVER("Allocated pde space (%ldM) at GTT entry: %lx\n", + DRM_DEBUG_DRIVER("Allocated pde space (%lldM) at GTT entry: %llx\n", ppgtt->node.size >> 20, ppgtt->node.start / PAGE_SIZE); @@ -1713,8 +1713,8 @@ void i915_gem_gtt_finish_object(struct drm_i915_gem_object *obj) static void i915_gtt_color_adjust(struct drm_mm_node *node, unsigned long color, - unsigned long *start, - unsigned long *end) + u64 *start, + u64 *end) { if (node->color != color) *start += 4096; diff --git a/include/drm/drm_mm.h b/include/drm/drm_mm.h index a24addfdfcec..0de6290df4da 100644 --- a/include/drm/drm_mm.h +++ b/include/drm/drm_mm.h @@ -68,8 +68,8 @@ struct drm_mm_node { unsigned scanned_preceeds_hole : 1; unsigned allocated : 1; unsigned long color; - unsigned long start; - unsigned long size; + u64 start; + u64 size; struct drm_mm *mm; }; @@ -82,16 +82,16 @@ struct drm_mm { unsigned int scan_check_range : 1; unsigned scan_alignment; unsigned long scan_color; - unsigned long scan_size; - unsigned long scan_hit_start; - unsigned long scan_hit_end; + u64 scan_size; + u64 scan_hit_start; + u64 scan_hit_end; unsigned scanned_blocks; - unsigned long scan_start; - unsigned long scan_end; + u64 scan_start; + u64 scan_end; struct drm_mm_node *prev_scanned_node; void (*color_adjust)(struct drm_mm_node *node, unsigned long color, - unsigned long *start, unsigned long *end); + u64 *start, u64 *end); }; /** @@ -124,7 +124,7 @@ static inline bool drm_mm_initialized(struct drm_mm *mm) return mm->hole_stack.next; } -static inline unsigned long __drm_mm_hole_node_start(struct drm_mm_node *hole_node) +static inline u64 __drm_mm_hole_node_start(struct drm_mm_node *hole_node) { return hole_node->start + hole_node->size; } @@ -140,13 +140,13 @@ static inline unsigned long __drm_mm_hole_node_start(struct drm_mm_node *hole_no * Returns: * Start of the subsequent hole. */ -static inline unsigned long drm_mm_hole_node_start(struct drm_mm_node *hole_node) +static inline u64 drm_mm_hole_node_start(struct drm_mm_node *hole_node) { BUG_ON(!hole_node->hole_follows); return __drm_mm_hole_node_start(hole_node); } -static inline unsigned long __drm_mm_hole_node_end(struct drm_mm_node *hole_node) +static inline u64 __drm_mm_hole_node_end(struct drm_mm_node *hole_node) { return list_entry(hole_node->node_list.next, struct drm_mm_node, node_list)->start; @@ -163,7 +163,7 @@ static inline unsigned long __drm_mm_hole_node_end(struct drm_mm_node *hole_node * Returns: * End of the subsequent hole. */ -static inline unsigned long drm_mm_hole_node_end(struct drm_mm_node *hole_node) +static inline u64 drm_mm_hole_node_end(struct drm_mm_node *hole_node) { return __drm_mm_hole_node_end(hole_node); } @@ -222,7 +222,7 @@ int drm_mm_reserve_node(struct drm_mm *mm, struct drm_mm_node *node); int drm_mm_insert_node_generic(struct drm_mm *mm, struct drm_mm_node *node, - unsigned long size, + u64 size, unsigned alignment, unsigned long color, enum drm_mm_search_flags sflags, @@ -245,7 +245,7 @@ int drm_mm_insert_node_generic(struct drm_mm *mm, */ static inline int drm_mm_insert_node(struct drm_mm *mm, struct drm_mm_node *node, - unsigned long size, + u64 size, unsigned alignment, enum drm_mm_search_flags flags) { @@ -255,11 +255,11 @@ static inline int drm_mm_insert_node(struct drm_mm *mm, int drm_mm_insert_node_in_range_generic(struct drm_mm *mm, struct drm_mm_node *node, - unsigned long size, + u64 size, unsigned alignment, unsigned long color, - unsigned long start, - unsigned long end, + u64 start, + u64 end, enum drm_mm_search_flags sflags, enum drm_mm_allocator_flags aflags); /** @@ -282,10 +282,10 @@ int drm_mm_insert_node_in_range_generic(struct drm_mm *mm, */ static inline int drm_mm_insert_node_in_range(struct drm_mm *mm, struct drm_mm_node *node, - unsigned long size, + u64 size, unsigned alignment, - unsigned long start, - unsigned long end, + u64 start, + u64 end, enum drm_mm_search_flags flags) { return drm_mm_insert_node_in_range_generic(mm, node, size, alignment, @@ -296,21 +296,21 @@ static inline int drm_mm_insert_node_in_range(struct drm_mm *mm, void drm_mm_remove_node(struct drm_mm_node *node); void drm_mm_replace_node(struct drm_mm_node *old, struct drm_mm_node *new); void drm_mm_init(struct drm_mm *mm, - unsigned long start, - unsigned long size); + u64 start, + u64 size); void drm_mm_takedown(struct drm_mm *mm); bool drm_mm_clean(struct drm_mm *mm); void drm_mm_init_scan(struct drm_mm *mm, - unsigned long size, + u64 size, unsigned alignment, unsigned long color); void drm_mm_init_scan_with_range(struct drm_mm *mm, - unsigned long size, + u64 size, unsigned alignment, unsigned long color, - unsigned long start, - unsigned long end); + u64 start, + u64 end); bool drm_mm_scan_add_block(struct drm_mm_node *node); bool drm_mm_scan_remove_block(struct drm_mm_node *node); -- 2.20.1