22 	/* Chain is a single page (next ptr) is unrequired */
30 	QED_CHAIN_USE_TO_PRODUCE,			/* Chain starts empty */
31 	QED_CHAIN_USE_TO_CONSUME,			/* Chain starts full */
32 	QED_CHAIN_USE_TO_CONSUME_PRODUCE,		/* Chain starts empty */
36 	/* The chain's size/prod/cons are kept in 16-bit variables */
39 	/* The chain's size/prod/cons are kept in 32-bit variables  */
76 	/* Fastpath portion of the chain - required for commands such
88 		 * chain pages, respectively to the physical addresses
120 	/* Slowpath of the chain - required for initialization and destruction,
133 	/* Address of first page of the chain - the address is required
140 	/* Total number of elements [for entire chain] */
186 static inline u16 qed_chain_get_prod_idx(const struct qed_chain *chain)  in qed_chain_get_prod_idx()  argument
188 	return chain->u.chain16.prod_idx;  in qed_chain_get_prod_idx()
191 static inline u16 qed_chain_get_cons_idx(const struct qed_chain *chain)  in qed_chain_get_cons_idx()  argument
193 	return chain->u.chain16.cons_idx;  in qed_chain_get_cons_idx()
196 static inline u32 qed_chain_get_prod_idx_u32(const struct qed_chain *chain)  in qed_chain_get_prod_idx_u32()  argument
198 	return chain->u.chain32.prod_idx;  in qed_chain_get_prod_idx_u32()
201 static inline u32 qed_chain_get_cons_idx_u32(const struct qed_chain *chain)  in qed_chain_get_cons_idx_u32()  argument
203 	return chain->u.chain32.cons_idx;  in qed_chain_get_cons_idx_u32()
206 static inline u16 qed_chain_get_elem_used(const struct qed_chain *chain)  in qed_chain_get_elem_used()  argument
208 	u32 prod = qed_chain_get_prod_idx(chain);  in qed_chain_get_elem_used()
209 	u32 cons = qed_chain_get_cons_idx(chain);  in qed_chain_get_elem_used()
210 	u16 elem_per_page = chain->elem_per_page;  in qed_chain_get_elem_used()
217 	if (chain->mode == QED_CHAIN_MODE_NEXT_PTR)  in qed_chain_get_elem_used()
223 static inline u16 qed_chain_get_elem_left(const struct qed_chain *chain)  in qed_chain_get_elem_left()  argument
225 	return (u16)(chain->capacity - qed_chain_get_elem_used(chain));  in qed_chain_get_elem_left()
228 static inline u32 qed_chain_get_elem_used_u32(const struct qed_chain *chain)  in qed_chain_get_elem_used_u32()  argument
230 	u64 prod = qed_chain_get_prod_idx_u32(chain);  in qed_chain_get_elem_used_u32()
231 	u64 cons = qed_chain_get_cons_idx_u32(chain);  in qed_chain_get_elem_used_u32()
232 	u16 elem_per_page = chain->elem_per_page;  in qed_chain_get_elem_used_u32()
239 	if (chain->mode == QED_CHAIN_MODE_NEXT_PTR)  in qed_chain_get_elem_used_u32()
245 static inline u32 qed_chain_get_elem_left_u32(const struct qed_chain *chain)  in qed_chain_get_elem_left_u32()  argument
247 	return chain->capacity - qed_chain_get_elem_used_u32(chain);  in qed_chain_get_elem_left_u32()
250 static inline u16 qed_chain_get_usable_per_page(const struct qed_chain *chain)  in qed_chain_get_usable_per_page()  argument
252 	return chain->usable_per_page;  in qed_chain_get_usable_per_page()
255 static inline u8 qed_chain_get_unusable_per_page(const struct qed_chain *chain)  in qed_chain_get_unusable_per_page()  argument
257 	return chain->elem_unusable;  in qed_chain_get_unusable_per_page()
260 static inline u32 qed_chain_get_page_cnt(const struct qed_chain *chain)  in qed_chain_get_page_cnt()  argument
262 	return chain->page_cnt;  in qed_chain_get_page_cnt()
265 static inline dma_addr_t qed_chain_get_pbl_phys(const struct qed_chain *chain)  in qed_chain_get_pbl_phys()  argument
267 	return chain->pbl_sp.table_phys;  in qed_chain_get_pbl_phys()
273  * Advance the next element accros pages for a linked chain
341  * A chain in which the driver "Produces" elements should use this API
358  * A chain in which the driver "Produces" elements should use this to get
360  * responsibility to validate that the chain has room for new element.
400  * Get the maximum number of BDs in chain
432  * A Chain in which the driver utilizes data written by a different source
471  * @brief qed_chain_reset - Resets the chain to its start state
473  * @param p_chain pointer to a previously allocted chain
524  * Returns a pointer to the last element of the chain
558 	/* p_virt_addr points at this stage to the last page of the chain */  in qed_chain_get_last_elem()
588 		 * positive and lower than the chain's capacity.  in qed_chain_set_prod()
613  * @brief qed_chain_pbl_zero_mem - set chain memory to 0