Lines Matching refs:_r
157 #define FRONT_RING_ATTACH(_r, _s, _i, __size) do { \ argument
158 (_r)->req_prod_pvt = (_i); \
159 (_r)->rsp_cons = (_i); \
160 (_r)->nr_ents = __RING_SIZE(_s, __size); \
161 (_r)->sring = (_s); \
164 #define FRONT_RING_INIT(_r, _s, __size) FRONT_RING_ATTACH(_r, _s, 0, __size) argument
166 #define BACK_RING_ATTACH(_r, _s, _i, __size) do { \ argument
167 (_r)->rsp_prod_pvt = (_i); \
168 (_r)->req_cons = (_i); \
169 (_r)->nr_ents = __RING_SIZE(_s, __size); \
170 (_r)->sring = (_s); \
173 #define BACK_RING_INIT(_r, _s, __size) BACK_RING_ATTACH(_r, _s, 0, __size) argument
176 #define RING_SIZE(_r) \ argument
177 ((_r)->nr_ents)
180 #define RING_FREE_REQUESTS(_r) \ argument
181 (RING_SIZE(_r) - ((_r)->req_prod_pvt - (_r)->rsp_cons))
186 #define RING_FULL(_r) \ argument
187 (RING_FREE_REQUESTS(_r) == 0)
190 #define RING_HAS_UNCONSUMED_RESPONSES(_r) \ argument
191 ((_r)->sring->rsp_prod - (_r)->rsp_cons)
193 #define RING_HAS_UNCONSUMED_REQUESTS(_r) ({ \ argument
194 unsigned int req = (_r)->sring->req_prod - (_r)->req_cons; \
195 unsigned int rsp = RING_SIZE(_r) - \
196 ((_r)->req_cons - (_r)->rsp_prod_pvt); \
201 #define RING_GET_REQUEST(_r, _idx) \ argument
202 (&((_r)->sring->ring[((_idx) & (RING_SIZE(_r) - 1))].req))
204 #define RING_GET_RESPONSE(_r, _idx) \ argument
205 (&((_r)->sring->ring[((_idx) & (RING_SIZE(_r) - 1))].rsp))
225 #define RING_REQUEST_CONS_OVERFLOW(_r, _cons) \ argument
226 (((_cons) - (_r)->rsp_prod_pvt) >= RING_SIZE(_r))
229 #define RING_REQUEST_PROD_OVERFLOW(_r, _prod) \ argument
230 (((_prod) - (_r)->rsp_prod_pvt) > RING_SIZE(_r))
233 #define RING_RESPONSE_PROD_OVERFLOW(_r, _prod) \ argument
234 (((_prod) - (_r)->rsp_cons) > RING_SIZE(_r))
236 #define RING_PUSH_REQUESTS(_r) do { \ argument
238 (_r)->sring->req_prod = (_r)->req_prod_pvt; \
241 #define RING_PUSH_RESPONSES(_r) do { \ argument
243 (_r)->sring->rsp_prod = (_r)->rsp_prod_pvt; \
276 #define RING_PUSH_REQUESTS_AND_CHECK_NOTIFY(_r, _notify) do { \ argument
277 RING_IDX __old = (_r)->sring->req_prod; \
278 RING_IDX __new = (_r)->req_prod_pvt; \
280 (_r)->sring->req_prod = __new; \
282 (_notify) = ((RING_IDX)(__new - (_r)->sring->req_event) < \
286 #define RING_PUSH_RESPONSES_AND_CHECK_NOTIFY(_r, _notify) do { \ argument
287 RING_IDX __old = (_r)->sring->rsp_prod; \
288 RING_IDX __new = (_r)->rsp_prod_pvt; \
290 (_r)->sring->rsp_prod = __new; \
292 (_notify) = ((RING_IDX)(__new - (_r)->sring->rsp_event) < \
296 #define RING_FINAL_CHECK_FOR_REQUESTS(_r, _work_to_do) do { \ argument
297 (_work_to_do) = RING_HAS_UNCONSUMED_REQUESTS(_r); \
299 (_r)->sring->req_event = (_r)->req_cons + 1; \
301 (_work_to_do) = RING_HAS_UNCONSUMED_REQUESTS(_r); \
304 #define RING_FINAL_CHECK_FOR_RESPONSES(_r, _work_to_do) do { \ argument
305 (_work_to_do) = RING_HAS_UNCONSUMED_RESPONSES(_r); \
307 (_r)->sring->rsp_event = (_r)->rsp_cons + 1; \
309 (_work_to_do) = RING_HAS_UNCONSUMED_RESPONSES(_r); \