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usr
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src
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linux-headers-6.8.0-83
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include
/
linux
/ [
drwxr-xr-x
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ism.h
/* SPDX-License-Identifier: GPL-2.0 */ /* * Internal Shared Memory * * Definitions for the ISM module * * Copyright IBM Corp. 2022 */ #ifndef _ISM_H #define _ISM_H #include <linux/workqueue.h> struct ism_dmb { u64 dmb_tok; u64 rgid; u32 dmb_len; u32 sba_idx; u32 vlan_valid; u32 vlan_id; void *cpu_addr; dma_addr_t dma_addr; }; /* Unless we gain unexpected popularity, this limit should hold for a while */ #define MAX_CLIENTS 8 #define ISM_NR_DMBS 1920 struct ism_dev { spinlock_t lock; /* protects the ism device */ struct list_head list; struct pci_dev *pdev; struct ism_sba *sba; dma_addr_t sba_dma_addr; DECLARE_BITMAP(sba_bitmap, ISM_NR_DMBS); u8 *sba_client_arr; /* entries are indices into 'clients' array */ void *priv[MAX_CLIENTS]; struct ism_eq *ieq; dma_addr_t ieq_dma_addr; struct device dev; u64 local_gid; int ieq_idx; struct ism_client *subs[MAX_CLIENTS]; }; struct ism_event { u32 type; u32 code; u64 tok; u64 time; u64 info; }; struct ism_client { const char *name; void (*add)(struct ism_dev *dev); void (*remove)(struct ism_dev *dev); void (*handle_event)(struct ism_dev *dev, struct ism_event *event); /* Parameter dmbemask contains a bit vector with updated DMBEs, if sent * via ism_move_data(). Callback function must handle all active bits * indicated by dmbemask. */ void (*handle_irq)(struct ism_dev *dev, unsigned int bit, u16 dmbemask); /* Private area - don't touch! */ u8 id; }; int ism_register_client(struct ism_client *client); int ism_unregister_client(struct ism_client *client); static inline void *ism_get_priv(struct ism_dev *dev, struct ism_client *client) { return dev->priv[client->id]; } static inline void ism_set_priv(struct ism_dev *dev, struct ism_client *client, void *priv) { dev->priv[client->id] = priv; } int ism_register_dmb(struct ism_dev *dev, struct ism_dmb *dmb, struct ism_client *client); int ism_unregister_dmb(struct ism_dev *dev, struct ism_dmb *dmb); int ism_move(struct ism_dev *dev, u64 dmb_tok, unsigned int idx, bool sf, unsigned int offset, void *data, unsigned int size); const struct smcd_ops *ism_get_smcd_ops(void); #endif /* _ISM_H */
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