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48 #ifndef HFI1_SDMA_TXREQ_H
49 #define HFI1_SDMA_TXREQ_H
51 /* increased for AHG */
55 * struct sdma_desc - canonical fragment descriptor
57 * This is the descriptor carried in the tx request
58 * corresponding to each fragment.
62 /* private: don't use directly */
65 /* Release reference to @pinning_ctx. May be called in interrupt context. Must not sleep. */
66 void (*ctx_put)(void *ctx);
70 * struct sdma_txreq - the sdma_txreq structure (one per packet)
71 * @list: for use by user and by queuing for wait
73 * This is the representation of a packet which consists of some
74 * number of fragments. Storage is provided to within the structure.
77 * The storage for the descriptors are automatically extended as needed
78 * when the currently allocation is exceeded.
80 * The user (Verbs or PSM) may overload this structure with fields
81 * specific to their use by putting this struct first in their struct.
82 * The method of allocation of the overloaded structure is user dependent
84 * The list is the only public field in the structure.
88 #define SDMA_TXREQ_S_OK 0
89 #define SDMA_TXREQ_S_SENDERROR 1
90 #define SDMA_TXREQ_S_ABORTED 2
91 #define SDMA_TXREQ_S_SHUTDOWN 3
94 #define SDMA_TXREQ_F_URGENT 0x0001
95 #define SDMA_TXREQ_F_AHG_COPY 0x0002
96 #define SDMA_TXREQ_F_USE_AHG 0x0004
97 #define SDMA_TXREQ_F_VIP 0x0010
100 typedef void (*callback_t)(struct sdma_txreq *, int);
104 struct list_head list;
106 struct sdma_desc *descp;
113 #ifdef CONFIG_HFI1_DEBUG_SDMA_ORDER
116 /* private: - used in coalesce/pad processing */
118 /* private: - down-counted to trigger last */
131 struct sdma_desc descs[NUM_DESC];
134 static inline int sdma_txreq_built(struct sdma_txreq *tx)
139 #endif /* HFI1_SDMA_TXREQ_H */