#include <linux/mlx5/driver.h>
#include "mlx5_core.h"
+#include "lib/mlx5.h"
#include "fpga/core.h"
static const char *const mlx5_fpga_error_strings[] = {
{
struct mlx5_fpga_device *fdev = mdev->fpga;
unsigned long flags;
+ unsigned int max_num_qps;
int err;
if (!fdev)
mlx5_fpga_image_name(fdev->last_oper_image),
MLX5_CAP_FPGA(fdev->mdev, image_version));
+ max_num_qps = MLX5_CAP_FPGA(mdev, shell_caps.max_num_qps);
+ err = mlx5_core_reserve_gids(mdev, max_num_qps);
+
out:
spin_lock_irqsave(&fdev->state_lock, flags);
fdev->state = err ? MLX5_FPGA_STATUS_FAILURE : MLX5_FPGA_STATUS_SUCCESS;
return 0;
}
+void mlx5_fpga_device_stop(struct mlx5_core_dev *mdev)
+{
+ struct mlx5_fpga_device *fdev = mdev->fpga;
+ unsigned int max_num_qps;
+ unsigned long flags;
+
+ if (!fdev)
+ return;
+
+ spin_lock_irqsave(&fdev->state_lock, flags);
+ if (fdev->state != MLX5_FPGA_STATUS_SUCCESS) {
+ spin_unlock_irqrestore(&fdev->state_lock, flags);
+ return;
+ }
+ fdev->state = MLX5_FPGA_STATUS_NONE;
+ spin_unlock_irqrestore(&fdev->state_lock, flags);
+
+ max_num_qps = MLX5_CAP_FPGA(mdev, shell_caps.max_num_qps);
+ mlx5_core_unreserve_gids(mdev, max_num_qps);
+}
+
void mlx5_fpga_device_cleanup(struct mlx5_core_dev *mdev)
{
- kfree(mdev->fpga);
+ struct mlx5_fpga_device *fdev = mdev->fpga;
+
+ mlx5_fpga_device_stop(mdev);
+ kfree(fdev);
mdev->fpga = NULL;
}
--- /dev/null
+/*
+ * Copyright (c) 2017, Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * 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.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/mlx5/driver.h>
+#include <linux/etherdevice.h>
+#include <linux/idr.h>
+#include "mlx5_core.h"
+
+void mlx5_init_reserved_gids(struct mlx5_core_dev *dev)
+{
+ unsigned int tblsz = MLX5_CAP_ROCE(dev, roce_address_table_size);
+
+ ida_init(&dev->roce.reserved_gids.ida);
+ dev->roce.reserved_gids.start = tblsz;
+ dev->roce.reserved_gids.count = 0;
+}
+
+void mlx5_cleanup_reserved_gids(struct mlx5_core_dev *dev)
+{
+ WARN_ON(!ida_is_empty(&dev->roce.reserved_gids.ida));
+ dev->roce.reserved_gids.start = 0;
+ dev->roce.reserved_gids.count = 0;
+ ida_destroy(&dev->roce.reserved_gids.ida);
+}
+
+int mlx5_core_reserve_gids(struct mlx5_core_dev *dev, unsigned int count)
+{
+ if (test_bit(MLX5_INTERFACE_STATE_UP, &dev->intf_state)) {
+ mlx5_core_err(dev, "Cannot reserve GIDs when interfaces are up\n");
+ return -EPERM;
+ }
+ if (dev->roce.reserved_gids.start < count) {
+ mlx5_core_warn(dev, "GID table exhausted attempting to reserve %d more GIDs\n",
+ count);
+ return -ENOMEM;
+ }
+ if (dev->roce.reserved_gids.count + count > MLX5_MAX_RESERVED_GIDS) {
+ mlx5_core_warn(dev, "Unable to reserve %d more GIDs\n", count);
+ return -ENOMEM;
+ }
+
+ dev->roce.reserved_gids.start -= count;
+ dev->roce.reserved_gids.count += count;
+ mlx5_core_dbg(dev, "Reserved %u GIDs starting at %u\n",
+ dev->roce.reserved_gids.count,
+ dev->roce.reserved_gids.start);
+ return 0;
+}
+
+void mlx5_core_unreserve_gids(struct mlx5_core_dev *dev, unsigned int count)
+{
+ WARN(test_bit(MLX5_INTERFACE_STATE_UP, &dev->intf_state), "Unreserving GIDs when interfaces are up");
+ WARN(count > dev->roce.reserved_gids.count, "Unreserving %u GIDs when only %u reserved",
+ count, dev->roce.reserved_gids.count);
+
+ dev->roce.reserved_gids.start += count;
+ dev->roce.reserved_gids.count -= count;
+ mlx5_core_dbg(dev, "%u GIDs starting at %u left reserved\n",
+ dev->roce.reserved_gids.count,
+ dev->roce.reserved_gids.start);
+}
+
+int mlx5_core_reserved_gid_alloc(struct mlx5_core_dev *dev, int *gid_index)
+{
+ int end = dev->roce.reserved_gids.start +
+ dev->roce.reserved_gids.count;
+ int index = 0;
+
+ index = ida_simple_get(&dev->roce.reserved_gids.ida,
+ dev->roce.reserved_gids.start, end,
+ GFP_KERNEL);
+ if (index < 0)
+ return index;
+
+ mlx5_core_dbg(dev, "Allodating reserved GID %u\n", index);
+ *gid_index = index;
+ return 0;
+}
+
+void mlx5_core_reserved_gid_free(struct mlx5_core_dev *dev, int gid_index)
+{
+ mlx5_core_dbg(dev, "Freeing reserved GID %u\n", gid_index);
+ ida_simple_remove(&dev->roce.reserved_gids.ida, gid_index);
+}
+
+unsigned int mlx5_core_reserved_gids_count(struct mlx5_core_dev *dev)
+{
+ return dev->roce.reserved_gids.count;
+}
+EXPORT_SYMBOL_GPL(mlx5_core_reserved_gids_count);
+
+int mlx5_core_roce_gid_set(struct mlx5_core_dev *dev, unsigned int index,
+ u8 roce_version, u8 roce_l3_type, const u8 *gid,
+ const u8 *mac, bool vlan, u16 vlan_id)
+{
+#define MLX5_SET_RA(p, f, v) MLX5_SET(roce_addr_layout, p, f, v)
+ u32 in[MLX5_ST_SZ_DW(set_roce_address_in)] = {0};
+ u32 out[MLX5_ST_SZ_DW(set_roce_address_out)] = {0};
+ void *in_addr = MLX5_ADDR_OF(set_roce_address_in, in, roce_address);
+ char *addr_l3_addr = MLX5_ADDR_OF(roce_addr_layout, in_addr,
+ source_l3_address);
+ void *addr_mac = MLX5_ADDR_OF(roce_addr_layout, in_addr,
+ source_mac_47_32);
+ int gidsz = MLX5_FLD_SZ_BYTES(roce_addr_layout, source_l3_address);
+
+ if (MLX5_CAP_GEN(dev, port_type) != MLX5_CAP_PORT_TYPE_ETH)
+ return -EINVAL;
+
+ if (gid) {
+ if (vlan) {
+ MLX5_SET_RA(in_addr, vlan_valid, 1);
+ MLX5_SET_RA(in_addr, vlan_id, vlan_id);
+ }
+
+ ether_addr_copy(addr_mac, mac);
+ MLX5_SET_RA(in_addr, roce_version, roce_version);
+ MLX5_SET_RA(in_addr, roce_l3_type, roce_l3_type);
+ memcpy(addr_l3_addr, gid, gidsz);
+ }
+
+ MLX5_SET(set_roce_address_in, in, roce_address_index, index);
+ MLX5_SET(set_roce_address_in, in, opcode, MLX5_CMD_OP_SET_ROCE_ADDRESS);
+ return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+}
+EXPORT_SYMBOL(mlx5_core_roce_gid_set);
--- /dev/null
+/*
+ * Copyright (c) 2017, Mellanox Technologies, Ltd. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * 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.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef __LIB_MLX5_H__
+#define __LIB_MLX5_H__
+
+void mlx5_init_reserved_gids(struct mlx5_core_dev *dev);
+void mlx5_cleanup_reserved_gids(struct mlx5_core_dev *dev);
+int mlx5_core_reserve_gids(struct mlx5_core_dev *dev, unsigned int count);
+void mlx5_core_unreserve_gids(struct mlx5_core_dev *dev, unsigned int count);
+int mlx5_core_reserved_gid_alloc(struct mlx5_core_dev *dev, int *gid_index);
+void mlx5_core_reserved_gid_free(struct mlx5_core_dev *dev, int gid_index);
+
+#endif
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