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29#ifndef __EHEA_QMR_H__
30#define __EHEA_QMR_H__
31
32#include "ehea.h"
33#include "ehea_hw.h"
34
35
36
37
38
39#define EHEA_PAGESHIFT 12
40#define EHEA_PAGESIZE (1UL << EHEA_PAGESHIFT)
41#define EHEA_SECTSIZE (1UL << 24)
42#define EHEA_PAGES_PER_SECTION (EHEA_SECTSIZE >> EHEA_PAGESHIFT)
43#define EHEA_HUGEPAGESHIFT 34
44#define EHEA_HUGEPAGE_SIZE (1UL << EHEA_HUGEPAGESHIFT)
45#define EHEA_HUGEPAGE_PFN_MASK ((EHEA_HUGEPAGE_SIZE - 1) >> PAGE_SHIFT)
46
47#if ((1UL << SECTION_SIZE_BITS) < EHEA_SECTSIZE)
48#error eHEA module cannot work if kernel sectionsize < ehea sectionsize
49#endif
50
51
52
53
54
55
56
57
58
59
60
61
62#define EHEA_WR_ID_COUNT EHEA_BMASK_IBM(0, 19)
63#define EHEA_WR_ID_TYPE EHEA_BMASK_IBM(20, 23)
64#define EHEA_SWQE2_TYPE 0x1
65#define EHEA_SWQE3_TYPE 0x2
66#define EHEA_RWQE2_TYPE 0x3
67#define EHEA_RWQE3_TYPE 0x4
68#define EHEA_WR_ID_INDEX EHEA_BMASK_IBM(24, 47)
69#define EHEA_WR_ID_REFILL EHEA_BMASK_IBM(48, 63)
70
71struct ehea_vsgentry {
72 u64 vaddr;
73 u32 l_key;
74 u32 len;
75};
76
77
78#define EHEA_MAX_WQE_SG_ENTRIES 252
79#define SWQE2_MAX_IMM (0xD0 - 0x30)
80#define SWQE3_MAX_IMM 224
81
82
83#define EHEA_SWQE_CRC 0x8000
84#define EHEA_SWQE_IP_CHECKSUM 0x4000
85#define EHEA_SWQE_TCP_CHECKSUM 0x2000
86#define EHEA_SWQE_TSO 0x1000
87#define EHEA_SWQE_SIGNALLED_COMPLETION 0x0800
88#define EHEA_SWQE_VLAN_INSERT 0x0400
89#define EHEA_SWQE_IMM_DATA_PRESENT 0x0200
90#define EHEA_SWQE_DESCRIPTORS_PRESENT 0x0100
91#define EHEA_SWQE_WRAP_CTL_REC 0x0080
92#define EHEA_SWQE_WRAP_CTL_FORCE 0x0040
93#define EHEA_SWQE_BIND 0x0020
94#define EHEA_SWQE_PURGE 0x0010
95
96
97#define SWQE_HEADER_SIZE 32
98
99struct ehea_swqe {
100 u64 wr_id;
101 u16 tx_control;
102 u16 vlan_tag;
103 u8 reserved1;
104 u8 ip_start;
105 u8 ip_end;
106 u8 immediate_data_length;
107 u8 tcp_offset;
108 u8 reserved2;
109 u16 tcp_end;
110 u8 wrap_tag;
111 u8 descriptors;
112 u16 reserved3;
113 u16 reserved4;
114 u16 mss;
115 u32 reserved5;
116 union {
117
118 struct {
119 struct ehea_vsgentry sg_list[EHEA_MAX_WQE_SG_ENTRIES];
120 } no_immediate_data;
121
122
123 struct {
124 struct ehea_vsgentry sg_entry;
125
126 u8 immediate_data[SWQE2_MAX_IMM];
127
128 struct ehea_vsgentry sg_list[EHEA_MAX_WQE_SG_ENTRIES-1];
129 } immdata_desc __attribute__ ((packed));
130
131
132 struct {
133 u8 immediate_data[SWQE3_MAX_IMM];
134 } immdata_nodesc;
135 } u;
136};
137
138struct ehea_rwqe {
139 u64 wr_id;
140 u8 reserved1[5];
141 u8 data_segments;
142 u16 reserved2;
143 u64 reserved3;
144 u64 reserved4;
145 struct ehea_vsgentry sg_list[EHEA_MAX_WQE_SG_ENTRIES];
146};
147
148#define EHEA_CQE_VLAN_TAG_XTRACT 0x0400
149
150#define EHEA_CQE_TYPE_RQ 0x60
151#define EHEA_CQE_STAT_ERR_MASK 0x700F
152#define EHEA_CQE_STAT_FAT_ERR_MASK 0xF
153#define EHEA_CQE_STAT_ERR_TCP 0x4000
154#define EHEA_CQE_STAT_ERR_IP 0x2000
155#define EHEA_CQE_STAT_ERR_CRC 0x1000
156
157struct ehea_cqe {
158 u64 wr_id;
159 u8 type;
160 u8 valid;
161 u16 status;
162 u16 reserved1;
163 u16 num_bytes_transfered;
164 u16 vlan_tag;
165 u16 inet_checksum_value;
166 u8 reserved2;
167 u8 header_length;
168 u16 reserved3;
169 u16 page_offset;
170 u16 wqe_count;
171 u32 qp_token;
172 u32 timestamp;
173 u32 reserved4;
174 u64 reserved5[3];
175};
176
177#define EHEA_EQE_VALID EHEA_BMASK_IBM(0, 0)
178#define EHEA_EQE_IS_CQE EHEA_BMASK_IBM(1, 1)
179#define EHEA_EQE_IDENTIFIER EHEA_BMASK_IBM(2, 7)
180#define EHEA_EQE_QP_CQ_NUMBER EHEA_BMASK_IBM(8, 31)
181#define EHEA_EQE_QP_TOKEN EHEA_BMASK_IBM(32, 63)
182#define EHEA_EQE_CQ_TOKEN EHEA_BMASK_IBM(32, 63)
183#define EHEA_EQE_KEY EHEA_BMASK_IBM(32, 63)
184#define EHEA_EQE_PORT_NUMBER EHEA_BMASK_IBM(56, 63)
185#define EHEA_EQE_EQ_NUMBER EHEA_BMASK_IBM(48, 63)
186#define EHEA_EQE_SM_ID EHEA_BMASK_IBM(48, 63)
187#define EHEA_EQE_SM_MECH_NUMBER EHEA_BMASK_IBM(48, 55)
188#define EHEA_EQE_SM_PORT_NUMBER EHEA_BMASK_IBM(56, 63)
189
190struct ehea_eqe {
191 u64 entry;
192};
193
194#define ERROR_DATA_LENGTH EHEA_BMASK_IBM(52, 63)
195#define ERROR_DATA_TYPE EHEA_BMASK_IBM(0, 7)
196
197static inline void *hw_qeit_calc(struct hw_queue *queue, u64 q_offset)
198{
199 struct ehea_page *current_page;
200
201 if (q_offset >= queue->queue_length)
202 q_offset -= queue->queue_length;
203 current_page = (queue->queue_pages)[q_offset >> EHEA_PAGESHIFT];
204 return ¤t_page->entries[q_offset & (EHEA_PAGESIZE - 1)];
205}
206
207static inline void *hw_qeit_get(struct hw_queue *queue)
208{
209 return hw_qeit_calc(queue, queue->current_q_offset);
210}
211
212static inline void hw_qeit_inc(struct hw_queue *queue)
213{
214 queue->current_q_offset += queue->qe_size;
215 if (queue->current_q_offset >= queue->queue_length) {
216 queue->current_q_offset = 0;
217
218 queue->toggle_state = (~queue->toggle_state) & 1;
219 }
220}
221
222static inline void *hw_qeit_get_inc(struct hw_queue *queue)
223{
224 void *retvalue = hw_qeit_get(queue);
225 hw_qeit_inc(queue);
226 return retvalue;
227}
228
229static inline void *hw_qeit_get_inc_valid(struct hw_queue *queue)
230{
231 struct ehea_cqe *retvalue = hw_qeit_get(queue);
232 u8 valid = retvalue->valid;
233 void *pref;
234
235 if ((valid >> 7) == (queue->toggle_state & 1)) {
236
237 hw_qeit_inc(queue);
238 pref = hw_qeit_calc(queue, queue->current_q_offset);
239 prefetch(pref);
240 prefetch(pref + 128);
241 } else
242 retvalue = NULL;
243 return retvalue;
244}
245
246static inline void *hw_qeit_get_valid(struct hw_queue *queue)
247{
248 struct ehea_cqe *retvalue = hw_qeit_get(queue);
249 void *pref;
250 u8 valid;
251
252 pref = hw_qeit_calc(queue, queue->current_q_offset);
253 prefetch(pref);
254 prefetch(pref + 128);
255 prefetch(pref + 256);
256 valid = retvalue->valid;
257 if (!((valid >> 7) == (queue->toggle_state & 1)))
258 retvalue = NULL;
259 return retvalue;
260}
261
262static inline void *hw_qeit_reset(struct hw_queue *queue)
263{
264 queue->current_q_offset = 0;
265 return hw_qeit_get(queue);
266}
267
268static inline void *hw_qeit_eq_get_inc(struct hw_queue *queue)
269{
270 u64 last_entry_in_q = queue->queue_length - queue->qe_size;
271 void *retvalue;
272
273 retvalue = hw_qeit_get(queue);
274 queue->current_q_offset += queue->qe_size;
275 if (queue->current_q_offset > last_entry_in_q) {
276 queue->current_q_offset = 0;
277 queue->toggle_state = (~queue->toggle_state) & 1;
278 }
279 return retvalue;
280}
281
282static inline void *hw_eqit_eq_get_inc_valid(struct hw_queue *queue)
283{
284 void *retvalue = hw_qeit_get(queue);
285 u32 qe = *(u8 *)retvalue;
286 if ((qe >> 7) == (queue->toggle_state & 1))
287 hw_qeit_eq_get_inc(queue);
288 else
289 retvalue = NULL;
290 return retvalue;
291}
292
293static inline struct ehea_rwqe *ehea_get_next_rwqe(struct ehea_qp *qp,
294 int rq_nr)
295{
296 struct hw_queue *queue;
297
298 if (rq_nr == 1)
299 queue = &qp->hw_rqueue1;
300 else if (rq_nr == 2)
301 queue = &qp->hw_rqueue2;
302 else
303 queue = &qp->hw_rqueue3;
304
305 return hw_qeit_get_inc(queue);
306}
307
308static inline struct ehea_swqe *ehea_get_swqe(struct ehea_qp *my_qp,
309 int *wqe_index)
310{
311 struct hw_queue *queue = &my_qp->hw_squeue;
312 struct ehea_swqe *wqe_p;
313
314 *wqe_index = (queue->current_q_offset) >> (7 + EHEA_SG_SQ);
315 wqe_p = hw_qeit_get_inc(&my_qp->hw_squeue);
316
317 return wqe_p;
318}
319
320static inline void ehea_post_swqe(struct ehea_qp *my_qp, struct ehea_swqe *swqe)
321{
322 iosync();
323 ehea_update_sqa(my_qp, 1);
324}
325
326static inline struct ehea_cqe *ehea_poll_rq1(struct ehea_qp *qp, int *wqe_index)
327{
328 struct hw_queue *queue = &qp->hw_rqueue1;
329
330 *wqe_index = (queue->current_q_offset) >> (7 + EHEA_SG_RQ1);
331 return hw_qeit_get_valid(queue);
332}
333
334static inline void ehea_inc_cq(struct ehea_cq *cq)
335{
336 hw_qeit_inc(&cq->hw_queue);
337}
338
339static inline void ehea_inc_rq1(struct ehea_qp *qp)
340{
341 hw_qeit_inc(&qp->hw_rqueue1);
342}
343
344static inline struct ehea_cqe *ehea_poll_cq(struct ehea_cq *my_cq)
345{
346 return hw_qeit_get_valid(&my_cq->hw_queue);
347}
348
349#define EHEA_CQ_REGISTER_ORIG 0
350#define EHEA_EQ_REGISTER_ORIG 0
351
352enum ehea_eq_type {
353 EHEA_EQ = 0,
354 EHEA_NEQ
355};
356
357struct ehea_eq *ehea_create_eq(struct ehea_adapter *adapter,
358 enum ehea_eq_type type,
359 const u32 length, const u8 eqe_gen);
360
361int ehea_destroy_eq(struct ehea_eq *eq);
362
363struct ehea_eqe *ehea_poll_eq(struct ehea_eq *eq);
364
365struct ehea_cq *ehea_create_cq(struct ehea_adapter *adapter, int cqe,
366 u64 eq_handle, u32 cq_token);
367
368int ehea_destroy_cq(struct ehea_cq *cq);
369
370struct ehea_qp *ehea_create_qp(struct ehea_adapter *adapter, u32 pd,
371 struct ehea_qp_init_attr *init_attr);
372
373int ehea_destroy_qp(struct ehea_qp *qp);
374
375int ehea_reg_kernel_mr(struct ehea_adapter *adapter, struct ehea_mr *mr);
376
377int ehea_gen_smr(struct ehea_adapter *adapter, struct ehea_mr *old_mr,
378 struct ehea_mr *shared_mr);
379
380int ehea_rem_mr(struct ehea_mr *mr);
381
382void ehea_error_data(struct ehea_adapter *adapter, u64 res_handle);
383
384int ehea_add_sect_bmap(unsigned long pfn, unsigned long nr_pages);
385int ehea_rem_sect_bmap(unsigned long pfn, unsigned long nr_pages);
386int ehea_create_busmap(void);
387void ehea_destroy_busmap(void);
388u64 ehea_map_vaddr(void *caddr);
389
390#endif
391
