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- /* SPDX-License-Identifier: GPL-2.0 */
- /* Shared Memory Communications Direct over ISM devices (SMC-D)
- *
- * SMC-D ISM device structure definitions.
- *
- * Copyright IBM Corp. 2018
- */
- #ifndef SMCD_ISM_H
- #define SMCD_ISM_H
- #include <linux/uio.h>
- #include <linux/mutex.h>
- #include "smc.h"
- struct smcd_dev_list { /* List of SMCD devices */
- struct list_head list;
- struct mutex mutex; /* Protects list of devices */
- };
- extern struct smcd_dev_list smcd_dev_list; /* list of smcd devices */
- extern bool smc_ism_v2_capable; /* HW supports ISM V2 and thus
- * System EID is defined
- */
- struct smc_ism_vlanid { /* VLAN id set on ISM device */
- struct list_head list;
- unsigned short vlanid; /* Vlan id */
- refcount_t refcnt; /* Reference count */
- };
- struct smc_ism_position { /* ISM device position to write to */
- u64 token; /* Token of DMB */
- u32 offset; /* Offset into DMBE */
- u8 index; /* Index of DMBE */
- u8 signal; /* Generate interrupt on owner side */
- };
- struct smcd_dev;
- int smc_ism_cantalk(u64 peer_gid, unsigned short vlan_id, struct smcd_dev *dev);
- void smc_ism_set_conn(struct smc_connection *conn);
- void smc_ism_unset_conn(struct smc_connection *conn);
- int smc_ism_get_vlan(struct smcd_dev *dev, unsigned short vlan_id);
- int smc_ism_put_vlan(struct smcd_dev *dev, unsigned short vlan_id);
- int smc_ism_register_dmb(struct smc_link_group *lgr, int buf_size,
- struct smc_buf_desc *dmb_desc);
- int smc_ism_unregister_dmb(struct smcd_dev *dev, struct smc_buf_desc *dmb_desc);
- int smc_ism_write(struct smcd_dev *dev, const struct smc_ism_position *pos,
- void *data, size_t len);
- int smc_ism_signal_shutdown(struct smc_link_group *lgr);
- void smc_ism_get_system_eid(struct smcd_dev *dev, u8 **eid);
- u16 smc_ism_get_chid(struct smcd_dev *dev);
- void smc_ism_init(void);
- #endif
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