Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /* Shared Memory Communications Direct over ISM devices (SMC-D)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * SMC-D ISM device structure definitions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * Copyright IBM Corp. 2018
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #ifndef SMCD_ISM_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #define SMCD_ISM_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/uio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include "smc.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) struct smcd_dev_list {	/* List of SMCD devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	struct mutex mutex;	/* Protects list of devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) extern struct smcd_dev_list	smcd_dev_list;	/* list of smcd devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) extern bool	smc_ism_v2_capable;	/* HW supports ISM V2 and thus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 					 * System EID is defined
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 					 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) struct smc_ism_vlanid {			/* VLAN id set on ISM device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	unsigned short vlanid;		/* Vlan id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	refcount_t refcnt;		/* Reference count */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct smc_ism_position {	/* ISM device position to write to */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	u64 token;		/* Token of DMB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	u32 offset;		/* Offset into DMBE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	u8 index;		/* Index of DMBE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	u8 signal;		/* Generate interrupt on owner side */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct smcd_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) int smc_ism_cantalk(u64 peer_gid, unsigned short vlan_id, struct smcd_dev *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) void smc_ism_set_conn(struct smc_connection *conn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) void smc_ism_unset_conn(struct smc_connection *conn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) int smc_ism_get_vlan(struct smcd_dev *dev, unsigned short vlan_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) int smc_ism_put_vlan(struct smcd_dev *dev, unsigned short vlan_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) int smc_ism_register_dmb(struct smc_link_group *lgr, int buf_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 			 struct smc_buf_desc *dmb_desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) int smc_ism_unregister_dmb(struct smcd_dev *dev, struct smc_buf_desc *dmb_desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) int smc_ism_write(struct smcd_dev *dev, const struct smc_ism_position *pos,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 		  void *data, size_t len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) int smc_ism_signal_shutdown(struct smc_link_group *lgr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) void smc_ism_get_system_eid(struct smcd_dev *dev, u8 **eid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) u16 smc_ism_get_chid(struct smcd_dev *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) void smc_ism_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #endif