-/*-
- * 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.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
*/
#include <string.h>
#include <rte_log.h>
#include <rte_memory.h>
#include <rte_eal_memconfig.h>
+#include <rte_vfio.h>
#include "eal_filesystem.h"
#include "eal_vfio.h"
{
int i;
int vfio_group_fd;
- int group_idx = -1;
char filename[PATH_MAX];
+ struct vfio_group *cur_grp;
/* check if we already have the group descriptor open */
for (i = 0; i < VFIO_MAX_GROUPS; i++)
/* Now lets get an index for the new group */
for (i = 0; i < VFIO_MAX_GROUPS; i++)
if (vfio_cfg.vfio_groups[i].group_no == -1) {
- group_idx = i;
+ cur_grp = &vfio_cfg.vfio_groups[i];
break;
}
/* This should not happen */
- if (group_idx == -1) {
+ if (i == VFIO_MAX_GROUPS) {
RTE_LOG(ERR, EAL, "No VFIO group free slot found\n");
return -1;
}
/* noiommu group found */
}
- vfio_cfg.vfio_groups[group_idx].group_no = iommu_group_no;
- vfio_cfg.vfio_groups[group_idx].fd = vfio_group_fd;
+ cur_grp->group_no = iommu_group_no;
+ cur_grp->fd = vfio_group_fd;
vfio_cfg.vfio_active_groups++;
return vfio_group_fd;
}
return 0;
case SOCKET_OK:
vfio_group_fd = vfio_mp_sync_receive_fd(socket_fd);
- /* if we got the fd, return it */
+ /* if we got the fd, store it and return it */
if (vfio_group_fd > 0) {
close(socket_fd);
+ cur_grp->group_no = iommu_group_no;
+ cur_grp->fd = vfio_group_fd;
+ vfio_cfg.vfio_active_groups++;
return vfio_group_fd;
}
/* fall-through on error */
return -1;
}
+
+static int
+get_vfio_group_idx(int vfio_group_fd)
+{
+ int i;
+ for (i = 0; i < VFIO_MAX_GROUPS; i++)
+ if (vfio_cfg.vfio_groups[i].fd == vfio_group_fd)
+ return i;
+ return -1;
+}
+
+static void
+vfio_group_device_get(int vfio_group_fd)
+{
+ int i;
+
+ i = get_vfio_group_idx(vfio_group_fd);
+ if (i < 0 || i > (VFIO_MAX_GROUPS - 1))
+ RTE_LOG(ERR, EAL, " wrong vfio_group index (%d)\n", i);
+ else
+ vfio_cfg.vfio_groups[i].devices++;
+}
+
+static void
+vfio_group_device_put(int vfio_group_fd)
+{
+ int i;
+
+ i = get_vfio_group_idx(vfio_group_fd);
+ if (i < 0 || i > (VFIO_MAX_GROUPS - 1))
+ RTE_LOG(ERR, EAL, " wrong vfio_group index (%d)\n", i);
+ else
+ vfio_cfg.vfio_groups[i].devices--;
+}
+
+static int
+vfio_group_device_count(int vfio_group_fd)
+{
+ int i;
+
+ i = get_vfio_group_idx(vfio_group_fd);
+ if (i < 0 || i > (VFIO_MAX_GROUPS - 1)) {
+ RTE_LOG(ERR, EAL, " wrong vfio_group index (%d)\n", i);
+ return -1;
+ }
+
+ return vfio_cfg.vfio_groups[i].devices;
+}
+
int
-clear_group(int vfio_group_fd)
+rte_vfio_clear_group(int vfio_group_fd)
{
int i;
int socket_fd, ret;
if (internal_config.process_type == RTE_PROC_PRIMARY) {
- for (i = 0; i < VFIO_MAX_GROUPS; i++)
- if (vfio_cfg.vfio_groups[i].fd == vfio_group_fd) {
- vfio_cfg.vfio_groups[i].group_no = -1;
- vfio_cfg.vfio_groups[i].fd = -1;
- vfio_cfg.vfio_groups[i].devices = 0;
- vfio_cfg.vfio_active_groups--;
- return 0;
- }
- return -1;
+ i = get_vfio_group_idx(vfio_group_fd);
+ if (i < 0)
+ return -1;
+ vfio_cfg.vfio_groups[i].group_no = -1;
+ vfio_cfg.vfio_groups[i].fd = -1;
+ vfio_cfg.vfio_groups[i].devices = 0;
+ vfio_cfg.vfio_active_groups--;
+ return 0;
}
/* This is just for SECONDARY processes */
}
int
-vfio_setup_device(const char *sysfs_base, const char *dev_addr,
+rte_vfio_setup_device(const char *sysfs_base, const char *dev_addr,
int *vfio_dev_fd, struct vfio_device_info *device_info)
{
struct vfio_group_status group_status = {
RTE_LOG(ERR, EAL, " %s cannot get group status, "
"error %i (%s)\n", dev_addr, errno, strerror(errno));
close(vfio_group_fd);
- clear_group(vfio_group_fd);
+ rte_vfio_clear_group(vfio_group_fd);
return -1;
} else if (!(group_status.flags & VFIO_GROUP_FLAGS_VIABLE)) {
RTE_LOG(ERR, EAL, " %s VFIO group is not viable!\n", dev_addr);
close(vfio_group_fd);
- clear_group(vfio_group_fd);
+ rte_vfio_clear_group(vfio_group_fd);
return -1;
}
RTE_LOG(ERR, EAL, " %s cannot add VFIO group to container, "
"error %i (%s)\n", dev_addr, errno, strerror(errno));
close(vfio_group_fd);
- clear_group(vfio_group_fd);
+ rte_vfio_clear_group(vfio_group_fd);
return -1;
}
" %s failed to select IOMMU type\n",
dev_addr);
close(vfio_group_fd);
- clear_group(vfio_group_fd);
+ rte_vfio_clear_group(vfio_group_fd);
return -1;
}
ret = t->dma_map_func(vfio_cfg.vfio_container_fd);
" %s DMA remapping failed, error %i (%s)\n",
dev_addr, errno, strerror(errno));
close(vfio_group_fd);
- clear_group(vfio_group_fd);
+ rte_vfio_clear_group(vfio_group_fd);
return -1;
}
}
RTE_LOG(WARNING, EAL, "Getting a vfio_dev_fd for %s failed\n",
dev_addr);
close(vfio_group_fd);
- clear_group(vfio_group_fd);
+ rte_vfio_clear_group(vfio_group_fd);
return -1;
}
strerror(errno));
close(*vfio_dev_fd);
close(vfio_group_fd);
- clear_group(vfio_group_fd);
+ rte_vfio_clear_group(vfio_group_fd);
return -1;
}
- vfio_cfg.vfio_groups[vfio_group_fd].devices++;
+ vfio_group_device_get(vfio_group_fd);
return 0;
}
int
-vfio_release_device(const char *sysfs_base, const char *dev_addr,
+rte_vfio_release_device(const char *sysfs_base, const char *dev_addr,
int vfio_dev_fd)
{
struct vfio_group_status group_status = {
/* An VFIO group can have several devices attached. Just when there is
* no devices remaining should the group be closed.
*/
- if (--vfio_cfg.vfio_groups[vfio_group_fd].devices == 0) {
+ vfio_group_device_put(vfio_group_fd);
+ if (!vfio_group_device_count(vfio_group_fd)) {
if (close(vfio_group_fd) < 0) {
RTE_LOG(INFO, EAL, "Error when closing vfio_group_fd for %s\n",
return -1;
}
- if (clear_group(vfio_group_fd) < 0) {
+ if (rte_vfio_clear_group(vfio_group_fd) < 0) {
RTE_LOG(INFO, EAL, "Error when clearing group for %s\n",
dev_addr);
return -1;
}
int
-vfio_enable(const char *modname)
+rte_vfio_enable(const char *modname)
{
/* initialize group list */
int i;
/* inform the user that we are probing for VFIO */
RTE_LOG(INFO, EAL, "Probing VFIO support...\n");
- /* check if vfio-pci module is loaded */
+ /* check if vfio module is loaded */
vfio_available = rte_eal_check_module(modname);
/* return error directly */
}
int
-vfio_is_enabled(const char *modname)
+rte_vfio_is_enabled(const char *modname)
{
- const int mod_available = rte_eal_check_module(modname);
+ const int mod_available = rte_eal_check_module(modname) > 0;
return vfio_cfg.vfio_enabled && mod_available;
}
dma_map.argsz = sizeof(struct vfio_iommu_type1_dma_map);
dma_map.vaddr = ms[i].addr_64;
dma_map.size = ms[i].len;
- dma_map.iova = ms[i].phys_addr;
+ dma_map.iova = ms[i].iova;
dma_map.flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE;
ret = ioctl(vfio_container_fd, VFIO_IOMMU_MAP_DMA, &dma_map);
return -1;
}
- /* calculate window size based on number of hugepages configured */
- create.window_size = rte_eal_get_physmem_size();
+ /* create DMA window from 0 to max(phys_addr + len) */
+ for (i = 0; i < RTE_MAX_MEMSEG; i++) {
+ if (ms[i].addr == NULL)
+ break;
+
+ create.window_size = RTE_MAX(create.window_size,
+ ms[i].iova + ms[i].len);
+ }
+
+ /* sPAPR requires window size to be a power of 2 */
+ create.window_size = rte_align64pow2(create.window_size);
create.page_shift = __builtin_ctzll(ms->hugepage_sz);
- create.levels = 2;
+ create.levels = 1;
ret = ioctl(vfio_container_fd, VFIO_IOMMU_SPAPR_TCE_CREATE, &create);
if (ret) {
return -1;
}
+ if (create.start_addr != 0) {
+ RTE_LOG(ERR, EAL, " DMA window start address != 0\n");
+ return -1;
+ }
+
/* map all DPDK segments for DMA. use 1:1 PA to IOVA mapping */
for (i = 0; i < RTE_MAX_MEMSEG; i++) {
struct vfio_iommu_type1_dma_map dma_map;
dma_map.argsz = sizeof(struct vfio_iommu_type1_dma_map);
dma_map.vaddr = ms[i].addr_64;
dma_map.size = ms[i].len;
- dma_map.iova = ms[i].phys_addr;
+ dma_map.iova = ms[i].iova;
dma_map.flags = VFIO_DMA_MAP_FLAG_READ |
VFIO_DMA_MAP_FLAG_WRITE;
return 0;
}
+int
+rte_vfio_noiommu_is_enabled(void)
+{
+ int fd;
+ ssize_t cnt;
+ char c;
+
+ fd = open(VFIO_NOIOMMU_MODE, O_RDONLY);
+ if (fd < 0) {
+ if (errno != ENOENT) {
+ RTE_LOG(ERR, EAL, " cannot open vfio noiommu file %i (%s)\n",
+ errno, strerror(errno));
+ return -1;
+ }
+ /*
+ * else the file does not exists
+ * i.e. noiommu is not enabled
+ */
+ return 0;
+ }
+
+ cnt = read(fd, &c, 1);
+ close(fd);
+ if (cnt != 1) {
+ RTE_LOG(ERR, EAL, " unable to read from vfio noiommu "
+ "file %i (%s)\n", errno, strerror(errno));
+ return -1;
+ }
+
+ return c == 'Y';
+}
+
#endif
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