Imported upstream release 16.04

* gbp import-orig ../dpdk-16.04.tar.xz

Change-Id: Iac2196db782ba322f6974d8a752acc34ce5024c3
Signed-off-by: C.J. Collier <cjcollier@linuxfoundation.org>

1 files changed, 232 insertions, 0 deletions

diff --git a/lib/librte_eal/bsdapp/contigmem/contigmem.c b/lib/librte_eal/bsdapp/contigmem/contigmem.c
new file mode 100644
index 00000000..c6ca3b9c
--- /dev/null
+++ b/lib/librte_eal/bsdapp/contigmem/contigmem.c
@@ -0,0 +1,232 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Intel 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/bio.h>
+#include <sys/bus.h>
+#include <sys/conf.h>
+#include <sys/kernel.h>
+#include <sys/malloc.h>
+#include <sys/module.h>
+#include <sys/proc.h>
+#include <sys/rwlock.h>
+#include <sys/systm.h>
+#include <sys/sysctl.h>
+
+#include <machine/bus.h>
+
+#include <vm/vm.h>
+#include <vm/pmap.h>
+#include <vm/vm_object.h>
+#include <vm/vm_page.h>
+#include <vm/vm_pager.h>
+
+static int              contigmem_load(void);
+static int              contigmem_unload(void);
+static int              contigmem_physaddr(SYSCTL_HANDLER_ARGS);
+
+static d_mmap_t         contigmem_mmap;
+static d_mmap_single_t  contigmem_mmap_single;
+static d_open_t         contigmem_open;
+
+static int              contigmem_num_buffers = RTE_CONTIGMEM_DEFAULT_NUM_BUFS;
+static int64_t          contigmem_buffer_size = RTE_CONTIGMEM_DEFAULT_BUF_SIZE;
+
+static eventhandler_tag contigmem_eh_tag;
+static void            *contigmem_buffers[RTE_CONTIGMEM_MAX_NUM_BUFS];
+static struct cdev     *contigmem_cdev = NULL;
+
+TUNABLE_INT("hw.contigmem.num_buffers", &contigmem_num_buffers);
+TUNABLE_QUAD("hw.contigmem.buffer_size", &contigmem_buffer_size);
+
+static SYSCTL_NODE(_hw, OID_AUTO, contigmem, CTLFLAG_RD, 0, "contigmem");
+
+SYSCTL_INT(_hw_contigmem, OID_AUTO, num_buffers, CTLFLAG_RD,
+	&contigmem_num_buffers, 0, "Number of contigmem buffers allocated");
+SYSCTL_QUAD(_hw_contigmem, OID_AUTO, buffer_size, CTLFLAG_RD,
+	&contigmem_buffer_size, 0, "Size of each contiguous buffer");
+
+static SYSCTL_NODE(_hw_contigmem, OID_AUTO, physaddr, CTLFLAG_RD, 0,
+	"physaddr");
+
+MALLOC_DEFINE(M_CONTIGMEM, "contigmem", "contigmem(4) allocations");
+
+static int contigmem_modevent(module_t mod, int type, void *arg)
+{
+	int error = 0;
+
+	switch (type) {
+	case MOD_LOAD:
+		error = contigmem_load();
+		break;
+	case MOD_UNLOAD:
+		error = contigmem_unload();
+		break;
+	default:
+		break;
+	}
+
+	return error;
+}
+
+moduledata_t contigmem_mod = {
+	"contigmem",
+	(modeventhand_t)contigmem_modevent,
+	0
+};
+
+DECLARE_MODULE(contigmem, contigmem_mod, SI_SUB_DRIVERS, SI_ORDER_ANY);
+MODULE_VERSION(contigmem, 1);
+
+static struct cdevsw contigmem_ops = {
+	.d_name         = "contigmem",
+	.d_version      = D_VERSION,
+	.d_mmap         = contigmem_mmap,
+	.d_mmap_single  = contigmem_mmap_single,
+	.d_open         = contigmem_open,
+};
+
+static int
+contigmem_load()
+{
+	char index_string[8], description[32];
+	int  i;
+
+	if (contigmem_num_buffers > RTE_CONTIGMEM_MAX_NUM_BUFS) {
+		printf("%d buffers requested is greater than %d allowed\n",
+				contigmem_num_buffers, RTE_CONTIGMEM_MAX_NUM_BUFS);
+		return EINVAL;
+	}
+
+	if (contigmem_buffer_size < PAGE_SIZE ||
+			(contigmem_buffer_size & (contigmem_buffer_size - 1)) != 0) {
+		printf("buffer size 0x%lx is not greater than PAGE_SIZE and "
+				"power of two\n", contigmem_buffer_size);
+		return EINVAL;
+	}
+
+	for (i = 0; i < contigmem_num_buffers; i++) {
+		contigmem_buffers[i] =
+				contigmalloc(contigmem_buffer_size, M_CONTIGMEM, M_ZERO, 0,
+			BUS_SPACE_MAXADDR, contigmem_buffer_size, 0);
+
+		if (contigmem_buffers[i] == NULL) {
+			printf("contigmalloc failed for buffer %d\n", i);
+			return ENOMEM;
+		}
+
+		printf("%2u: virt=%p phys=%p\n", i, contigmem_buffers[i],
+				(void *)pmap_kextract((vm_offset_t)contigmem_buffers[i]));
+
+		snprintf(index_string, sizeof(index_string), "%d", i);
+		snprintf(description, sizeof(description),
+				"phys addr for buffer %d", i);
+		SYSCTL_ADD_PROC(NULL,
+				&SYSCTL_NODE_CHILDREN(_hw_contigmem, physaddr), OID_AUTO,
+				index_string, CTLTYPE_U64 | CTLFLAG_RD,
+				(void *)(uintptr_t)i, 0, contigmem_physaddr, "LU",
+				description);
+	}
+
+	contigmem_cdev = make_dev_credf(0, &contigmem_ops, 0, NULL, UID_ROOT,
+			GID_WHEEL, 0600, "contigmem");
+
+	return 0;
+}
+
+static int
+contigmem_unload()
+{
+	int i;
+
+	if (contigmem_cdev != NULL)
+		destroy_dev(contigmem_cdev);
+
+	if (contigmem_eh_tag != NULL)
+		EVENTHANDLER_DEREGISTER(process_exit, contigmem_eh_tag);
+
+	for (i = 0; i < RTE_CONTIGMEM_MAX_NUM_BUFS; i++)
+		if (contigmem_buffers[i] != NULL)
+			contigfree(contigmem_buffers[i], contigmem_buffer_size,
+					M_CONTIGMEM);
+
+	return 0;
+}
+
+static int
+contigmem_physaddr(SYSCTL_HANDLER_ARGS)
+{
+	uint64_t	physaddr;
+	int		index = (int)(uintptr_t)arg1;
+
+	physaddr = (uint64_t)vtophys(contigmem_buffers[index]);
+	return sysctl_handle_64(oidp, &physaddr, 0, req);
+}
+
+static int
+contigmem_open(struct cdev *cdev, int fflags, int devtype,
+		struct thread *td)
+{
+	return 0;
+}
+
+static int
+contigmem_mmap(struct cdev *cdev, vm_ooffset_t offset, vm_paddr_t *paddr,
+		int prot, vm_memattr_t *memattr)
+{
+
+	*paddr = offset;
+	return 0;
+}
+
+static int
+contigmem_mmap_single(struct cdev *cdev, vm_ooffset_t *offset, vm_size_t size,
+		struct vm_object **obj, int nprot)
+{
+	/*
+	 * The buffer index is encoded in the offset.  Divide the offset by
+	 *  PAGE_SIZE to get the index of the buffer requested by the user
+	 *  app.
+	 */
+	if ((*offset/PAGE_SIZE) >= contigmem_num_buffers)
+		return EINVAL;
+
+	*offset = (vm_ooffset_t)vtophys(contigmem_buffers[*offset/PAGE_SIZE]);
+	*obj = vm_pager_allocate(OBJT_DEVICE, cdev, size, nprot, *offset,
+			curthread->td_ucred);
+
+	return 0;
+}