drm/nouveau: use drm_mm in preference to custom code doing the same thing (b833ac26) · Commits · EulixOS / Software / Kernel

drivers/gpu/drm/nouveau/nouveau_drv.h

+4 −20

Original line number	Diff line number	Diff line
		@@ -123,14 +123,6 @@ nvbo_kmap_obj_iovirtual(struct nouveau_bo *nvbo)
		return ioptr;
		}

		struct mem_block {
		struct mem_block *next;
		struct mem_block *prev;
		uint64_t start;
		uint64_t size;
		struct drm_file file_priv; / NULL: free, -1: heap, other: real files */
		};

		enum nouveau_flags {
		NV_NFORCE = 0x10000000,
		NV_NFORCE2 = 0x20000000
		@@ -149,7 +141,7 @@ struct nouveau_gpuobj {
		struct list_head list;

		struct nouveau_channel *im_channel;
		struct mem_block *im_pramin;
		struct drm_mm_node *im_pramin;
		struct nouveau_bo *im_backing;
		uint32_t im_backing_start;
		uint32_t *im_backing_suspend;
		@@ -206,7 +198,7 @@ struct nouveau_channel {

		/* Notifier memory */
		struct nouveau_bo *notifier_bo;
		struct mem_block *notifier_heap;
		struct drm_mm notifier_heap;

		/* PFIFO context */
		struct nouveau_gpuobj_ref *ramfc;
		@@ -224,7 +216,7 @@ struct nouveau_channel {

		/* Objects */
		struct nouveau_gpuobj_ref ramin; / Private instmem */
		struct mem_block ramin_heap; / Private PRAMIN heap */
		struct drm_mm ramin_heap; /* Private PRAMIN heap */
		struct nouveau_gpuobj_ref ramht; / Hash table */
		struct list_head ramht_refs; /* Objects referenced by RAMHT */

		@@ -595,7 +587,7 @@ struct drm_nouveau_private {
		struct nouveau_gpuobj *vm_vram_pt[NV50_VM_VRAM_NR];
		int vm_vram_pt_nr;

		struct mem_block *ramin_heap;
		struct drm_mm ramin_heap;

		/* context table pointed to be NV_PGRAPH_CHANNEL_CTX_TABLE (0x400780) */
		uint32_t ctx_table_size;
		@@ -707,15 +699,7 @@ extern bool nouveau_wait_for_idle(struct drm_device *);
		extern int nouveau_card_init(struct drm_device *);

		/* nouveau_mem.c */
		extern int nouveau_mem_init_heap(struct mem_block **, uint64_t start,
		uint64_t size);
		extern struct mem_block nouveau_mem_alloc_block(struct mem_block ,
		uint64_t size, int align2,
		struct drm_file *, int tail);
		extern void nouveau_mem_takedown(struct mem_block **heap);
		extern void nouveau_mem_free_block(struct mem_block *);
		extern int nouveau_mem_detect(struct drm_device *dev);
		extern void nouveau_mem_release(struct drm_file , struct mem_block heap);
		extern int nouveau_mem_init(struct drm_device *);
		extern int nouveau_mem_init_agp(struct drm_device *);
		extern void nouveau_mem_close(struct drm_device *);

drivers/gpu/drm/nouveau/nouveau_mem.c

+2 −174

Original line number	Diff line number	Diff line
		@@ -35,162 +35,6 @@
		#include "drm_sarea.h"
		#include "nouveau_drv.h"

		static struct mem_block *
		split_block(struct mem_block *p, uint64_t start, uint64_t size,
		struct drm_file *file_priv)
		{
		/* Maybe cut off the start of an existing block */
		if (start > p->start) {
		struct mem_block *newblock =
		kmalloc(sizeof(*newblock), GFP_KERNEL);
		if (!newblock)
		goto out;
		newblock->start = start;
		newblock->size = p->size - (start - p->start);
		newblock->file_priv = NULL;
		newblock->next = p->next;
		newblock->prev = p;
		p->next->prev = newblock;
		p->next = newblock;
		p->size -= newblock->size;
		p = newblock;
		}

		/* Maybe cut off the end of an existing block */
		if (size < p->size) {
		struct mem_block *newblock =
		kmalloc(sizeof(*newblock), GFP_KERNEL);
		if (!newblock)
		goto out;
		newblock->start = start + size;
		newblock->size = p->size - size;
		newblock->file_priv = NULL;
		newblock->next = p->next;
		newblock->prev = p;
		p->next->prev = newblock;
		p->next = newblock;
		p->size = size;
		}

		out:
		/* Our block is in the middle */
		p->file_priv = file_priv;
		return p;
		}

		struct mem_block *
		nouveau_mem_alloc_block(struct mem_block *heap, uint64_t size,
		int align2, struct drm_file *file_priv, int tail)
		{
		struct mem_block *p;
		uint64_t mask = (1 << align2) - 1;

		if (!heap)
		return NULL;

		if (tail) {
		list_for_each_prev(p, heap) {
		uint64_t start = ((p->start + p->size) - size) & ~mask;

		if (p->file_priv == NULL && start >= p->start &&
		start + size <= p->start + p->size)
		return split_block(p, start, size, file_priv);
		}
		} else {
		list_for_each(p, heap) {
		uint64_t start = (p->start + mask) & ~mask;

		if (p->file_priv == NULL &&
		start + size <= p->start + p->size)
		return split_block(p, start, size, file_priv);
		}
		}

		return NULL;
		}

		void nouveau_mem_free_block(struct mem_block *p)
		{
		p->file_priv = NULL;

		/* Assumes a single contiguous range. Needs a special file_priv in
		* 'heap' to stop it being subsumed.
		*/
		if (p->next->file_priv == NULL) {
		struct mem_block *q = p->next;
		p->size += q->size;
		p->next = q->next;
		p->next->prev = p;
		kfree(q);
		}

		if (p->prev->file_priv == NULL) {
		struct mem_block *q = p->prev;
		q->size += p->size;
		q->next = p->next;
		q->next->prev = q;
		kfree(p);
		}
		}

		/* Initialize. How to check for an uninitialized heap?
		*/
		int nouveau_mem_init_heap(struct mem_block **heap, uint64_t start,
		uint64_t size)
		{
		struct mem_block blocks = kmalloc(sizeof(blocks), GFP_KERNEL);

		if (!blocks)
		return -ENOMEM;

		heap = kmalloc(sizeof(*heap), GFP_KERNEL);
		if (!*heap) {
		kfree(blocks);
		return -ENOMEM;
		}

		blocks->start = start;
		blocks->size = size;
		blocks->file_priv = NULL;
		blocks->next = blocks->prev = *heap;

		memset(heap, 0, sizeof(*heap));
		(heap)->file_priv = (struct drm_file ) -1;
		(heap)->next = (heap)->prev = blocks;
		return 0;
		}

		/*
		* Free all blocks associated with the releasing file_priv
		*/
		void nouveau_mem_release(struct drm_file file_priv, struct mem_block heap)
		{
		struct mem_block *p;

		if (!heap \|\| !heap->next)
		return;

		list_for_each(p, heap) {
		if (p->file_priv == file_priv)
		p->file_priv = NULL;
		}

		/* Assumes a single contiguous range. Needs a special file_priv in
		* 'heap' to stop it being subsumed.
		*/
		list_for_each(p, heap) {
		while ((p->file_priv == NULL) &&
		(p->next->file_priv == NULL) &&
		(p->next != heap)) {
		struct mem_block *q = p->next;
		p->size += q->size;
		p->next = q->next;
		p->next->prev = p;
		kfree(q);
		}
		}
		}

		/*
		* NV10-NV40 tiling helpers
		*/
		@@ -421,24 +265,8 @@ nv50_mem_vm_unbind(struct drm_device *dev, uint64_t virt, uint32_t size)
		/*
		* Cleanup everything
		*/
		void nouveau_mem_takedown(struct mem_block **heap)
		{
		struct mem_block *p;

		if (!*heap)
		return;

		for (p = (heap)->next; p != heap;) {
		struct mem_block *q = p;
		p = p->next;
		kfree(q);
		}

		kfree(*heap);
		*heap = NULL;
		}

		void nouveau_mem_close(struct drm_device *dev)
		void
		nouveau_mem_close(struct drm_device *dev)
		{
		struct drm_nouveau_private *dev_priv = dev->dev_private;

drivers/gpu/drm/nouveau/nouveau_notifier.c

+12 −17

Original line number	Diff line number	Diff line
		@@ -55,7 +55,7 @@ nouveau_notifier_init_channel(struct nouveau_channel *chan)
		if (ret)
		goto out_err;

		ret = nouveau_mem_init_heap(&chan->notifier_heap, 0, ntfy->bo.mem.size);
		ret = drm_mm_init(&chan->notifier_heap, 0, ntfy->bo.mem.size);
		if (ret)
		goto out_err;

		@@ -80,7 +80,7 @@ nouveau_notifier_takedown_channel(struct nouveau_channel *chan)
		nouveau_bo_unpin(chan->notifier_bo);
		mutex_unlock(&dev->struct_mutex);
		drm_gem_object_unreference_unlocked(chan->notifier_bo->gem);
		nouveau_mem_takedown(&chan->notifier_heap);
		drm_mm_takedown(&chan->notifier_heap);
		}

		static void
		@@ -90,7 +90,7 @@ nouveau_notifier_gpuobj_dtor(struct drm_device *dev,
		NV_DEBUG(dev, "\n");

		if (gpuobj->priv)
		nouveau_mem_free_block(gpuobj->priv);
		drm_mm_put_block(gpuobj->priv);
		}

		int
		@@ -100,18 +100,13 @@ nouveau_notifier_alloc(struct nouveau_channel *chan, uint32_t handle,
		struct drm_device *dev = chan->dev;
		struct drm_nouveau_private *dev_priv = dev->dev_private;
		struct nouveau_gpuobj *nobj = NULL;
		struct mem_block *mem;
		struct drm_mm_node *mem;
		uint32_t offset;
		int target, ret;

		if (!chan->notifier_heap) {
		NV_ERROR(dev, "Channel %d doesn't have a notifier heap!\n",
		chan->id);
		return -EINVAL;
		}

		mem = nouveau_mem_alloc_block(chan->notifier_heap, size, 0,
		(struct drm_file *)-2, 0);
		mem = drm_mm_search_free(&chan->notifier_heap, size, 0, 0);
		if (mem)
		mem = drm_mm_get_block(mem, size, 0);
		if (!mem) {
		NV_ERROR(dev, "Channel %d notifier block full\n", chan->id);
		return -ENOMEM;
		@@ -144,7 +139,7 @@ nouveau_notifier_alloc(struct nouveau_channel *chan, uint32_t handle,
		mem->size, NV_DMA_ACCESS_RW, target,
		&nobj);
		if (ret) {
		nouveau_mem_free_block(mem);
		drm_mm_put_block(mem);
		NV_ERROR(dev, "Error creating notifier ctxdma: %d\n", ret);
		return ret;
		}
		@@ -154,7 +149,7 @@ nouveau_notifier_alloc(struct nouveau_channel *chan, uint32_t handle,
		ret = nouveau_gpuobj_ref_add(dev, chan, handle, nobj, NULL);
		if (ret) {
		nouveau_gpuobj_del(dev, &nobj);
		nouveau_mem_free_block(mem);
		drm_mm_put_block(mem);
		NV_ERROR(dev, "Error referencing notifier ctxdma: %d\n", ret);
		return ret;
		}
		@@ -170,7 +165,7 @@ nouveau_notifier_offset(struct nouveau_gpuobj nobj, uint32_t poffset)
		return -EINVAL;

		if (poffset) {
		struct mem_block *mem = nobj->priv;
		struct drm_mm_node *mem = nobj->priv;

		if (*poffset >= mem->size)
		return false;

drivers/gpu/drm/nouveau/nouveau_object.c

+14 −14

Original line number	Diff line number	Diff line
		@@ -209,7 +209,7 @@ nouveau_gpuobj_new(struct drm_device dev, struct nouveau_channel chan,
		struct drm_nouveau_private *dev_priv = dev->dev_private;
		struct nouveau_engine *engine = &dev_priv->engine;
		struct nouveau_gpuobj *gpuobj;
		struct mem_block *pramin = NULL;
		struct drm_mm *pramin = NULL;
		int ret;

		NV_DEBUG(dev, "ch%d size=%u align=%d flags=0x%08x\n",
		@@ -233,17 +233,17 @@ nouveau_gpuobj_new(struct drm_device dev, struct nouveau_channel chan,
		* available.
		*/
		if (chan) {
		if (chan->ramin_heap) {
		if (chan->ramin_heap.ml_entry.next) {
		NV_DEBUG(dev, "private heap\n");
		pramin = chan->ramin_heap;
		pramin = &chan->ramin_heap;
		} else
		if (dev_priv->card_type < NV_50) {
		NV_DEBUG(dev, "global heap fallback\n");
		pramin = dev_priv->ramin_heap;
		pramin = &dev_priv->ramin_heap;
		}
		} else {
		NV_DEBUG(dev, "global heap\n");
		pramin = dev_priv->ramin_heap;
		pramin = &dev_priv->ramin_heap;
		}

		if (!pramin) {
		@@ -260,9 +260,10 @@ nouveau_gpuobj_new(struct drm_device dev, struct nouveau_channel chan,
		}

		/* Allocate a chunk of the PRAMIN aperture */
		gpuobj->im_pramin = nouveau_mem_alloc_block(pramin, size,
		drm_order(align),
		(struct drm_file *)-2, 0);
		gpuobj->im_pramin = drm_mm_search_free(pramin, size, align, 0);
		if (gpuobj->im_pramin)
		gpuobj->im_pramin = drm_mm_get_block(gpuobj->im_pramin, size, align);

		if (!gpuobj->im_pramin) {
		nouveau_gpuobj_del(dev, &gpuobj);
		return -ENOMEM;
		@@ -386,7 +387,7 @@ nouveau_gpuobj_del(struct drm_device dev, struct nouveau_gpuobj *pgpuobj)
		if (gpuobj->flags & NVOBJ_FLAG_FAKE)
		kfree(gpuobj->im_pramin);
		else
		nouveau_mem_free_block(gpuobj->im_pramin);
		drm_mm_put_block(gpuobj->im_pramin);
		}

		list_del(&gpuobj->list);
		@@ -589,7 +590,7 @@ nouveau_gpuobj_new_fake(struct drm_device *dev, uint32_t p_offset,
		list_add_tail(&gpuobj->list, &dev_priv->gpuobj_list);

		if (p_offset != ~0) {
		gpuobj->im_pramin = kzalloc(sizeof(struct mem_block),
		gpuobj->im_pramin = kzalloc(sizeof(struct drm_mm_node),
		GFP_KERNEL);
		if (!gpuobj->im_pramin) {
		nouveau_gpuobj_del(dev, &gpuobj);
		@@ -944,8 +945,7 @@ nouveau_gpuobj_channel_init_pramin(struct nouveau_channel *chan)
		}
		pramin = chan->ramin->gpuobj;

		ret = nouveau_mem_init_heap(&chan->ramin_heap,
		pramin->im_pramin->start + base, size);
		ret = drm_mm_init(&chan->ramin_heap, pramin->im_pramin->start + base, size);
		if (ret) {
		NV_ERROR(dev, "Error creating PRAMIN heap: %d\n", ret);
		nouveau_gpuobj_ref_del(dev, &chan->ramin);
		@@ -1130,8 +1130,8 @@ nouveau_gpuobj_channel_takedown(struct nouveau_channel *chan)
		for (i = 0; i < dev_priv->vm_vram_pt_nr; i++)
		nouveau_gpuobj_ref_del(dev, &chan->vm_vram_pt[i]);

		if (chan->ramin_heap)
		nouveau_mem_takedown(&chan->ramin_heap);
		if (chan->ramin_heap.free_stack.next)
		drm_mm_takedown(&chan->ramin_heap);
		if (chan->ramin)
		nouveau_gpuobj_ref_del(dev, &chan->ramin);

drivers/gpu/drm/nouveau/nv04_instmem.c

+6 −6

Original line number	Diff line number	Diff line
		@@ -106,7 +106,7 @@ int nv04_instmem_init(struct drm_device *dev)
		{
		struct drm_nouveau_private *dev_priv = dev->dev_private;
		uint32_t offset;
		int ret = 0;
		int ret;

		nv04_instmem_determine_amount(dev);
		nv04_instmem_configure_fixed_tables(dev);
		@@ -129,14 +129,14 @@ int nv04_instmem_init(struct drm_device *dev)
		offset = 0x40000;
		}

		ret = nouveau_mem_init_heap(&dev_priv->ramin_heap,
		offset, dev_priv->ramin_rsvd_vram - offset);
		ret = drm_mm_init(&dev_priv->ramin_heap, offset,
		dev_priv->ramin_rsvd_vram - offset);
		if (ret) {
		dev_priv->ramin_heap = NULL;
		NV_ERROR(dev, "Failed to init RAMIN heap\n");
		NV_ERROR(dev, "Failed to init RAMIN heap: %d\n", ret);
		return ret;
		}

		return ret;
		return 0;
		}

		void