1 files changed, 130 insertions, 0 deletions
diff --git a/rtemsbsd/powerpc/include/linux/genalloc.h b/rtemsbsd/powerpc/include/linux/genalloc.h
new file mode 100644
index 00000000..9df0e430
--- /dev/null
+++ b/rtemsbsd/powerpc/include/linux/genalloc.h
@@ -0,0 +1,130 @@
+/**************************************************************************
+
+Copyright (c) 2007, 2008 Chelsio Inc.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright notice,
+    this list of conditions and the following disclaimer.
+
+ 2. Neither the name of the Chelsio Corporation nor the names of its
+    contributors may be used to endorse or promote products derived from
+    this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+***************************************************************************/
+
+#ifndef _LINUX_GENALLOC_H
+#define	_LINUX_GENALLOC_H
+
+#include <sys/blist.h>
+#include <sys/malloc.h>
+
+struct gen_pool {
+	blist_t  	gen_list;
+	daddr_t  	gen_base;
+	int      	gen_chunk_shift;
+	struct mtx 	gen_lock;
+};
+
+static inline struct gen_pool *
+gen_pool_create(int min_alloc_order, int nid)
+{
+	struct gen_pool *gp;
+
+	gp = malloc(sizeof(*gp), M_DEVBUF, M_NOWAIT | M_ZERO);
+	if (gp == NULL)
+		return (NULL);
+	
+	gp->gen_chunk_shift = min_alloc_order;
+	mtx_init(&gp->gen_lock, "genpool", NULL, MTX_DEF);
+	return (gp);
+}
+
+static inline int
+gen_pool_add_virt(struct gen_pool *gp, daddr_t virt, daddr_t phys,
+    size_t size, int nid)
+{
+
+	(void)phys;
+	(void)nid;
+
+	if (gp->gen_base != 0)
+		return (-ENOMEM);
+
+	gp->gen_list = blist_create(size >> gp->gen_chunk_shift, M_NOWAIT);
+	if (gp->gen_list == NULL)
+		return (-ENOMEM);
+
+	gp->gen_base = virt;
+	blist_free(gp->gen_list, 0, size >> gp->gen_chunk_shift);
+	return (0);
+}
+
+static inline int
+gen_pool_add(struct gen_pool *gp, daddr_t addr, size_t size, int nid)
+{
+
+	return (gen_pool_add_virt(gp, addr, -1, size, nid));
+}
+
+static inline daddr_t
+gen_pool_alloc(struct gen_pool *gp, size_t size)
+{
+	int chunks;
+	daddr_t blkno; 
+
+	chunks = (size + (1 << gp->gen_chunk_shift) - 1) >> gp->gen_chunk_shift;
+	mtx_lock(&gp->gen_lock);
+	blkno = blist_alloc(gp->gen_list, chunks);
+	mtx_unlock(&gp->gen_lock);
+
+	if (blkno == SWAPBLK_NONE)
+		return (0);
+
+	return (gp->gen_base + ((1 << gp->gen_chunk_shift) * blkno));
+}
+
+static inline void
+gen_pool_free(struct gen_pool *gp, daddr_t address, size_t size)
+{
+	int chunks;
+	daddr_t blkno;
+	
+	chunks = (size + (1<<gp->gen_chunk_shift) - 1) >> gp->gen_chunk_shift;
+	blkno = (address - gp->gen_base) / (1 << gp->gen_chunk_shift);
+	mtx_lock(&gp->gen_lock);
+	blist_free(gp->gen_list, blkno, chunks);
+	mtx_unlock(&gp->gen_lock);
+}
+
+static __inline void
+gen_pool_destroy(struct gen_pool *gp)
+{
+	blist_destroy(gp->gen_list);
+	free(gp, M_DEVBUF);
+}
+
+static inline struct gen_pool *
+devm_gen_pool_create(struct device *dev, int min_alloc_order, int nid,
+    const char *name)
+{
+
+	(void)dev;
+	(void)name;
+	return (gen_pool_create(min_alloc_order, nid));
+}
+
+#endif /* _LINUX_GENALLOC_H */