1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * linux/drivers/net/ethernet/ibm/ehea/ehea_qmr.c
5 * eHEA ethernet device driver for IBM eServer System p
7 * (C) Copyright IBM Corp. 2006
10 * Christoph Raisch <raisch@de.ibm.com>
11 * Jan-Bernd Themann <themann@de.ibm.com>
12 * Thomas Klein <tklein@de.ibm.com>
15 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
18 #include <linux/slab.h>
20 #include "ehea_phyp.h"
23 static struct ehea_bmap *ehea_bmap;
25 static void *hw_qpageit_get_inc(struct hw_queue *queue)
27 void *retvalue = hw_qeit_get(queue);
29 queue->current_q_offset += queue->pagesize;
30 if (queue->current_q_offset > queue->queue_length) {
31 queue->current_q_offset -= queue->pagesize;
33 } else if (((u64) retvalue) & (EHEA_PAGESIZE-1)) {
34 pr_err("not on pageboundary\n");
40 static int hw_queue_ctor(struct hw_queue *queue, const u32 nr_of_pages,
41 const u32 pagesize, const u32 qe_size)
43 int pages_per_kpage = PAGE_SIZE / pagesize;
46 if ((pagesize > PAGE_SIZE) || (!pages_per_kpage)) {
47 pr_err("pagesize conflict! kernel pagesize=%d, ehea pagesize=%d\n",
48 (int)PAGE_SIZE, (int)pagesize);
52 queue->queue_length = nr_of_pages * pagesize;
53 queue->queue_pages = kmalloc_array(nr_of_pages, sizeof(void *),
55 if (!queue->queue_pages)
59 * allocate pages for queue:
60 * outer loop allocates whole kernel pages (page aligned) and
61 * inner loop divides a kernel page into smaller hea queue pages
64 while (i < nr_of_pages) {
65 u8 *kpage = (u8 *)get_zeroed_page(GFP_KERNEL);
68 for (k = 0; k < pages_per_kpage && i < nr_of_pages; k++) {
69 (queue->queue_pages)[i] = (struct ehea_page *)kpage;
75 queue->current_q_offset = 0;
76 queue->qe_size = qe_size;
77 queue->pagesize = pagesize;
78 queue->toggle_state = 1;
82 for (i = 0; i < nr_of_pages; i += pages_per_kpage) {
83 if (!(queue->queue_pages)[i])
85 free_page((unsigned long)(queue->queue_pages)[i]);
90 static void hw_queue_dtor(struct hw_queue *queue)
95 if (!queue || !queue->queue_pages)
98 pages_per_kpage = PAGE_SIZE / queue->pagesize;
100 nr_pages = queue->queue_length / queue->pagesize;
102 for (i = 0; i < nr_pages; i += pages_per_kpage)
103 free_page((unsigned long)(queue->queue_pages)[i]);
105 kfree(queue->queue_pages);
108 struct ehea_cq *ehea_create_cq(struct ehea_adapter *adapter,
109 int nr_of_cqe, u64 eq_handle, u32 cq_token)
117 cq = kzalloc(sizeof(*cq), GFP_KERNEL);
121 cq->attr.max_nr_of_cqes = nr_of_cqe;
122 cq->attr.cq_token = cq_token;
123 cq->attr.eq_handle = eq_handle;
125 cq->adapter = adapter;
127 hret = ehea_h_alloc_resource_cq(adapter->handle, &cq->attr,
128 &cq->fw_handle, &cq->epas);
129 if (hret != H_SUCCESS) {
130 pr_err("alloc_resource_cq failed\n");
134 ret = hw_queue_ctor(&cq->hw_queue, cq->attr.nr_pages,
135 EHEA_PAGESIZE, sizeof(struct ehea_cqe));
139 for (counter = 0; counter < cq->attr.nr_pages; counter++) {
140 vpage = hw_qpageit_get_inc(&cq->hw_queue);
142 pr_err("hw_qpageit_get_inc failed\n");
147 hret = ehea_h_register_rpage(adapter->handle,
148 0, EHEA_CQ_REGISTER_ORIG,
149 cq->fw_handle, rpage, 1);
150 if (hret < H_SUCCESS) {
151 pr_err("register_rpage_cq failed ehea_cq=%p hret=%llx counter=%i act_pages=%i\n",
152 cq, hret, counter, cq->attr.nr_pages);
156 if (counter == (cq->attr.nr_pages - 1)) {
157 vpage = hw_qpageit_get_inc(&cq->hw_queue);
159 if ((hret != H_SUCCESS) || (vpage)) {
160 pr_err("registration of pages not complete hret=%llx\n",
165 if (hret != H_PAGE_REGISTERED) {
166 pr_err("CQ: registration of page failed hret=%llx\n",
173 hw_qeit_reset(&cq->hw_queue);
174 ehea_reset_cq_ep(cq);
175 ehea_reset_cq_n1(cq);
180 hw_queue_dtor(&cq->hw_queue);
183 ehea_h_free_resource(adapter->handle, cq->fw_handle, FORCE_FREE);
192 static u64 ehea_destroy_cq_res(struct ehea_cq *cq, u64 force)
195 u64 adapter_handle = cq->adapter->handle;
197 /* deregister all previous registered pages */
198 hret = ehea_h_free_resource(adapter_handle, cq->fw_handle, force);
199 if (hret != H_SUCCESS)
202 hw_queue_dtor(&cq->hw_queue);
208 int ehea_destroy_cq(struct ehea_cq *cq)
214 hcp_epas_dtor(&cq->epas);
215 hret = ehea_destroy_cq_res(cq, NORMAL_FREE);
216 if (hret == H_R_STATE) {
217 ehea_error_data(cq->adapter, cq->fw_handle, &aer, &aerr);
218 hret = ehea_destroy_cq_res(cq, FORCE_FREE);
221 if (hret != H_SUCCESS) {
222 pr_err("destroy CQ failed\n");
229 struct ehea_eq *ehea_create_eq(struct ehea_adapter *adapter,
230 const enum ehea_eq_type type,
231 const u32 max_nr_of_eqes, const u8 eqe_gen)
238 eq = kzalloc(sizeof(*eq), GFP_KERNEL);
242 eq->adapter = adapter;
243 eq->attr.type = type;
244 eq->attr.max_nr_of_eqes = max_nr_of_eqes;
245 eq->attr.eqe_gen = eqe_gen;
246 spin_lock_init(&eq->spinlock);
248 hret = ehea_h_alloc_resource_eq(adapter->handle,
249 &eq->attr, &eq->fw_handle);
250 if (hret != H_SUCCESS) {
251 pr_err("alloc_resource_eq failed\n");
255 ret = hw_queue_ctor(&eq->hw_queue, eq->attr.nr_pages,
256 EHEA_PAGESIZE, sizeof(struct ehea_eqe));
258 pr_err("can't allocate eq pages\n");
262 for (i = 0; i < eq->attr.nr_pages; i++) {
263 vpage = hw_qpageit_get_inc(&eq->hw_queue);
265 pr_err("hw_qpageit_get_inc failed\n");
272 hret = ehea_h_register_rpage(adapter->handle, 0,
273 EHEA_EQ_REGISTER_ORIG,
274 eq->fw_handle, rpage, 1);
276 if (i == (eq->attr.nr_pages - 1)) {
278 vpage = hw_qpageit_get_inc(&eq->hw_queue);
279 if ((hret != H_SUCCESS) || (vpage))
283 if (hret != H_PAGE_REGISTERED)
289 hw_qeit_reset(&eq->hw_queue);
293 hw_queue_dtor(&eq->hw_queue);
296 ehea_h_free_resource(adapter->handle, eq->fw_handle, FORCE_FREE);
303 struct ehea_eqe *ehea_poll_eq(struct ehea_eq *eq)
305 struct ehea_eqe *eqe;
308 spin_lock_irqsave(&eq->spinlock, flags);
309 eqe = hw_eqit_eq_get_inc_valid(&eq->hw_queue);
310 spin_unlock_irqrestore(&eq->spinlock, flags);
315 static u64 ehea_destroy_eq_res(struct ehea_eq *eq, u64 force)
320 spin_lock_irqsave(&eq->spinlock, flags);
322 hret = ehea_h_free_resource(eq->adapter->handle, eq->fw_handle, force);
323 spin_unlock_irqrestore(&eq->spinlock, flags);
325 if (hret != H_SUCCESS)
328 hw_queue_dtor(&eq->hw_queue);
334 int ehea_destroy_eq(struct ehea_eq *eq)
340 hcp_epas_dtor(&eq->epas);
342 hret = ehea_destroy_eq_res(eq, NORMAL_FREE);
343 if (hret == H_R_STATE) {
344 ehea_error_data(eq->adapter, eq->fw_handle, &aer, &aerr);
345 hret = ehea_destroy_eq_res(eq, FORCE_FREE);
348 if (hret != H_SUCCESS) {
349 pr_err("destroy EQ failed\n");
356 /* allocates memory for a queue and registers pages in phyp */
357 static int ehea_qp_alloc_register(struct ehea_qp *qp, struct hw_queue *hw_queue,
358 int nr_pages, int wqe_size, int act_nr_sges,
359 struct ehea_adapter *adapter, int h_call_q_selector)
365 ret = hw_queue_ctor(hw_queue, nr_pages, EHEA_PAGESIZE, wqe_size);
369 for (cnt = 0; cnt < nr_pages; cnt++) {
370 vpage = hw_qpageit_get_inc(hw_queue);
372 pr_err("hw_qpageit_get_inc failed\n");
376 hret = ehea_h_register_rpage(adapter->handle,
377 0, h_call_q_selector,
378 qp->fw_handle, rpage, 1);
379 if (hret < H_SUCCESS) {
380 pr_err("register_rpage_qp failed\n");
384 hw_qeit_reset(hw_queue);
388 hw_queue_dtor(hw_queue);
392 static inline u32 map_wqe_size(u8 wqe_enc_size)
394 return 128 << wqe_enc_size;
397 struct ehea_qp *ehea_create_qp(struct ehea_adapter *adapter,
398 u32 pd, struct ehea_qp_init_attr *init_attr)
403 u32 wqe_size_in_bytes_sq, wqe_size_in_bytes_rq1;
404 u32 wqe_size_in_bytes_rq2, wqe_size_in_bytes_rq3;
407 qp = kzalloc(sizeof(*qp), GFP_KERNEL);
411 qp->adapter = adapter;
413 hret = ehea_h_alloc_resource_qp(adapter->handle, init_attr, pd,
414 &qp->fw_handle, &qp->epas);
415 if (hret != H_SUCCESS) {
416 pr_err("ehea_h_alloc_resource_qp failed\n");
420 wqe_size_in_bytes_sq = map_wqe_size(init_attr->act_wqe_size_enc_sq);
421 wqe_size_in_bytes_rq1 = map_wqe_size(init_attr->act_wqe_size_enc_rq1);
422 wqe_size_in_bytes_rq2 = map_wqe_size(init_attr->act_wqe_size_enc_rq2);
423 wqe_size_in_bytes_rq3 = map_wqe_size(init_attr->act_wqe_size_enc_rq3);
425 ret = ehea_qp_alloc_register(qp, &qp->hw_squeue, init_attr->nr_sq_pages,
426 wqe_size_in_bytes_sq,
427 init_attr->act_wqe_size_enc_sq, adapter,
430 pr_err("can't register for sq ret=%x\n", ret);
434 ret = ehea_qp_alloc_register(qp, &qp->hw_rqueue1,
435 init_attr->nr_rq1_pages,
436 wqe_size_in_bytes_rq1,
437 init_attr->act_wqe_size_enc_rq1,
440 pr_err("can't register for rq1 ret=%x\n", ret);
444 if (init_attr->rq_count > 1) {
445 ret = ehea_qp_alloc_register(qp, &qp->hw_rqueue2,
446 init_attr->nr_rq2_pages,
447 wqe_size_in_bytes_rq2,
448 init_attr->act_wqe_size_enc_rq2,
451 pr_err("can't register for rq2 ret=%x\n", ret);
456 if (init_attr->rq_count > 2) {
457 ret = ehea_qp_alloc_register(qp, &qp->hw_rqueue3,
458 init_attr->nr_rq3_pages,
459 wqe_size_in_bytes_rq3,
460 init_attr->act_wqe_size_enc_rq3,
463 pr_err("can't register for rq3 ret=%x\n", ret);
468 qp->init_attr = *init_attr;
473 hw_queue_dtor(&qp->hw_rqueue2);
476 hw_queue_dtor(&qp->hw_rqueue1);
479 hw_queue_dtor(&qp->hw_squeue);
482 ehea_h_disable_and_get_hea(adapter->handle, qp->fw_handle);
483 ehea_h_free_resource(adapter->handle, qp->fw_handle, FORCE_FREE);
490 static u64 ehea_destroy_qp_res(struct ehea_qp *qp, u64 force)
493 struct ehea_qp_init_attr *qp_attr = &qp->init_attr;
496 ehea_h_disable_and_get_hea(qp->adapter->handle, qp->fw_handle);
497 hret = ehea_h_free_resource(qp->adapter->handle, qp->fw_handle, force);
498 if (hret != H_SUCCESS)
501 hw_queue_dtor(&qp->hw_squeue);
502 hw_queue_dtor(&qp->hw_rqueue1);
504 if (qp_attr->rq_count > 1)
505 hw_queue_dtor(&qp->hw_rqueue2);
506 if (qp_attr->rq_count > 2)
507 hw_queue_dtor(&qp->hw_rqueue3);
513 int ehea_destroy_qp(struct ehea_qp *qp)
519 hcp_epas_dtor(&qp->epas);
521 hret = ehea_destroy_qp_res(qp, NORMAL_FREE);
522 if (hret == H_R_STATE) {
523 ehea_error_data(qp->adapter, qp->fw_handle, &aer, &aerr);
524 hret = ehea_destroy_qp_res(qp, FORCE_FREE);
527 if (hret != H_SUCCESS) {
528 pr_err("destroy QP failed\n");
535 static inline int ehea_calc_index(unsigned long i, unsigned long s)
537 return (i >> s) & EHEA_INDEX_MASK;
540 static inline int ehea_init_top_bmap(struct ehea_top_bmap *ehea_top_bmap,
543 if (!ehea_top_bmap->dir[dir]) {
544 ehea_top_bmap->dir[dir] =
545 kzalloc(sizeof(struct ehea_dir_bmap), GFP_KERNEL);
546 if (!ehea_top_bmap->dir[dir])
552 static inline int ehea_init_bmap(struct ehea_bmap *ehea_bmap, int top, int dir)
554 if (!ehea_bmap->top[top]) {
555 ehea_bmap->top[top] =
556 kzalloc(sizeof(struct ehea_top_bmap), GFP_KERNEL);
557 if (!ehea_bmap->top[top])
560 return ehea_init_top_bmap(ehea_bmap->top[top], dir);
563 static DEFINE_MUTEX(ehea_busmap_mutex);
564 static unsigned long ehea_mr_len;
566 #define EHEA_BUSMAP_ADD_SECT 1
567 #define EHEA_BUSMAP_REM_SECT 0
569 static void ehea_rebuild_busmap(void)
571 u64 vaddr = EHEA_BUSMAP_START;
574 for (top = 0; top < EHEA_MAP_ENTRIES; top++) {
575 struct ehea_top_bmap *ehea_top;
576 int valid_dir_entries = 0;
578 if (!ehea_bmap->top[top])
580 ehea_top = ehea_bmap->top[top];
581 for (dir = 0; dir < EHEA_MAP_ENTRIES; dir++) {
582 struct ehea_dir_bmap *ehea_dir;
583 int valid_entries = 0;
585 if (!ehea_top->dir[dir])
588 ehea_dir = ehea_top->dir[dir];
589 for (idx = 0; idx < EHEA_MAP_ENTRIES; idx++) {
590 if (!ehea_dir->ent[idx])
593 ehea_dir->ent[idx] = vaddr;
594 vaddr += EHEA_SECTSIZE;
596 if (!valid_entries) {
597 ehea_top->dir[dir] = NULL;
601 if (!valid_dir_entries) {
602 ehea_bmap->top[top] = NULL;
608 static int ehea_update_busmap(unsigned long pfn, unsigned long nr_pages, int add)
610 unsigned long i, start_section, end_section;
616 ehea_bmap = kzalloc(sizeof(struct ehea_bmap), GFP_KERNEL);
621 start_section = (pfn * PAGE_SIZE) / EHEA_SECTSIZE;
622 end_section = start_section + ((nr_pages * PAGE_SIZE) / EHEA_SECTSIZE);
623 /* Mark entries as valid or invalid only; address is assigned later */
624 for (i = start_section; i < end_section; i++) {
626 int top = ehea_calc_index(i, EHEA_TOP_INDEX_SHIFT);
627 int dir = ehea_calc_index(i, EHEA_DIR_INDEX_SHIFT);
628 int idx = i & EHEA_INDEX_MASK;
631 int ret = ehea_init_bmap(ehea_bmap, top, dir);
634 flag = 1; /* valid */
635 ehea_mr_len += EHEA_SECTSIZE;
637 if (!ehea_bmap->top[top])
639 if (!ehea_bmap->top[top]->dir[dir])
641 flag = 0; /* invalid */
642 ehea_mr_len -= EHEA_SECTSIZE;
645 ehea_bmap->top[top]->dir[dir]->ent[idx] = flag;
647 ehea_rebuild_busmap(); /* Assign contiguous addresses for mr */
651 int ehea_add_sect_bmap(unsigned long pfn, unsigned long nr_pages)
655 mutex_lock(&ehea_busmap_mutex);
656 ret = ehea_update_busmap(pfn, nr_pages, EHEA_BUSMAP_ADD_SECT);
657 mutex_unlock(&ehea_busmap_mutex);
661 int ehea_rem_sect_bmap(unsigned long pfn, unsigned long nr_pages)
665 mutex_lock(&ehea_busmap_mutex);
666 ret = ehea_update_busmap(pfn, nr_pages, EHEA_BUSMAP_REM_SECT);
667 mutex_unlock(&ehea_busmap_mutex);
671 static int ehea_is_hugepage(unsigned long pfn)
675 if (pfn & EHEA_HUGEPAGE_PFN_MASK)
678 page_order = compound_order(pfn_to_page(pfn));
679 if (page_order + PAGE_SHIFT != EHEA_HUGEPAGESHIFT)
685 static int ehea_create_busmap_callback(unsigned long initial_pfn,
686 unsigned long total_nr_pages, void *arg)
689 unsigned long pfn, start_pfn, end_pfn, nr_pages;
691 if ((total_nr_pages * PAGE_SIZE) < EHEA_HUGEPAGE_SIZE)
692 return ehea_update_busmap(initial_pfn, total_nr_pages,
693 EHEA_BUSMAP_ADD_SECT);
695 /* Given chunk is >= 16GB -> check for hugepages */
696 start_pfn = initial_pfn;
697 end_pfn = initial_pfn + total_nr_pages;
700 while (pfn < end_pfn) {
701 if (ehea_is_hugepage(pfn)) {
702 /* Add mem found in front of the hugepage */
703 nr_pages = pfn - start_pfn;
704 ret = ehea_update_busmap(start_pfn, nr_pages,
705 EHEA_BUSMAP_ADD_SECT);
709 /* Skip the hugepage */
710 pfn += (EHEA_HUGEPAGE_SIZE / PAGE_SIZE);
713 pfn += (EHEA_SECTSIZE / PAGE_SIZE);
716 /* Add mem found behind the hugepage(s) */
717 nr_pages = pfn - start_pfn;
718 return ehea_update_busmap(start_pfn, nr_pages, EHEA_BUSMAP_ADD_SECT);
721 int ehea_create_busmap(void)
725 mutex_lock(&ehea_busmap_mutex);
727 ret = walk_system_ram_range(0, 1ULL << MAX_PHYSMEM_BITS, NULL,
728 ehea_create_busmap_callback);
729 mutex_unlock(&ehea_busmap_mutex);
733 void ehea_destroy_busmap(void)
736 mutex_lock(&ehea_busmap_mutex);
740 for (top = 0; top < EHEA_MAP_ENTRIES; top++) {
741 if (!ehea_bmap->top[top])
744 for (dir = 0; dir < EHEA_MAP_ENTRIES; dir++) {
745 if (!ehea_bmap->top[top]->dir[dir])
748 kfree(ehea_bmap->top[top]->dir[dir]);
751 kfree(ehea_bmap->top[top]);
757 mutex_unlock(&ehea_busmap_mutex);
760 u64 ehea_map_vaddr(void *caddr)
763 unsigned long index, offset;
766 return EHEA_INVAL_ADDR;
768 index = __pa(caddr) >> SECTION_SIZE_BITS;
769 top = (index >> EHEA_TOP_INDEX_SHIFT) & EHEA_INDEX_MASK;
770 if (!ehea_bmap->top[top])
771 return EHEA_INVAL_ADDR;
773 dir = (index >> EHEA_DIR_INDEX_SHIFT) & EHEA_INDEX_MASK;
774 if (!ehea_bmap->top[top]->dir[dir])
775 return EHEA_INVAL_ADDR;
777 idx = index & EHEA_INDEX_MASK;
778 if (!ehea_bmap->top[top]->dir[dir]->ent[idx])
779 return EHEA_INVAL_ADDR;
781 offset = (unsigned long)caddr & (EHEA_SECTSIZE - 1);
782 return ehea_bmap->top[top]->dir[dir]->ent[idx] | offset;
785 static inline void *ehea_calc_sectbase(int top, int dir, int idx)
787 unsigned long ret = idx;
788 ret |= dir << EHEA_DIR_INDEX_SHIFT;
789 ret |= top << EHEA_TOP_INDEX_SHIFT;
790 return __va(ret << SECTION_SIZE_BITS);
793 static u64 ehea_reg_mr_section(int top, int dir, int idx, u64 *pt,
794 struct ehea_adapter *adapter,
800 u64 pt_abs = __pa(pt);
802 void *sectbase = ehea_calc_sectbase(top, dir, idx);
804 for (j = 0; j < (EHEA_PAGES_PER_SECTION / EHEA_MAX_RPAGE); j++) {
806 for (m = 0; m < EHEA_MAX_RPAGE; m++) {
807 pg = sectbase + ((k++) * EHEA_PAGESIZE);
810 hret = ehea_h_register_rpage_mr(adapter->handle, mr->handle, 0,
811 0, pt_abs, EHEA_MAX_RPAGE);
813 if ((hret != H_SUCCESS) &&
814 (hret != H_PAGE_REGISTERED)) {
815 ehea_h_free_resource(adapter->handle, mr->handle,
817 pr_err("register_rpage_mr failed\n");
824 static u64 ehea_reg_mr_sections(int top, int dir, u64 *pt,
825 struct ehea_adapter *adapter,
828 u64 hret = H_SUCCESS;
831 for (idx = 0; idx < EHEA_MAP_ENTRIES; idx++) {
832 if (!ehea_bmap->top[top]->dir[dir]->ent[idx])
835 hret = ehea_reg_mr_section(top, dir, idx, pt, adapter, mr);
836 if ((hret != H_SUCCESS) && (hret != H_PAGE_REGISTERED))
842 static u64 ehea_reg_mr_dir_sections(int top, u64 *pt,
843 struct ehea_adapter *adapter,
846 u64 hret = H_SUCCESS;
849 for (dir = 0; dir < EHEA_MAP_ENTRIES; dir++) {
850 if (!ehea_bmap->top[top]->dir[dir])
853 hret = ehea_reg_mr_sections(top, dir, pt, adapter, mr);
854 if ((hret != H_SUCCESS) && (hret != H_PAGE_REGISTERED))
860 int ehea_reg_kernel_mr(struct ehea_adapter *adapter, struct ehea_mr *mr)
865 u32 acc_ctrl = EHEA_MR_ACC_CTRL;
869 pt = (void *)get_zeroed_page(GFP_KERNEL);
876 hret = ehea_h_alloc_resource_mr(adapter->handle, EHEA_BUSMAP_START,
877 ehea_mr_len, acc_ctrl, adapter->pd,
878 &mr->handle, &mr->lkey);
880 if (hret != H_SUCCESS) {
881 pr_err("alloc_resource_mr failed\n");
887 ehea_h_free_resource(adapter->handle, mr->handle, FORCE_FREE);
888 pr_err("no busmap available\n");
893 for (top = 0; top < EHEA_MAP_ENTRIES; top++) {
894 if (!ehea_bmap->top[top])
897 hret = ehea_reg_mr_dir_sections(top, pt, adapter, mr);
898 if((hret != H_PAGE_REGISTERED) && (hret != H_SUCCESS))
902 if (hret != H_SUCCESS) {
903 ehea_h_free_resource(adapter->handle, mr->handle, FORCE_FREE);
904 pr_err("registering mr failed\n");
909 mr->vaddr = EHEA_BUSMAP_START;
910 mr->adapter = adapter;
913 free_page((unsigned long)pt);
917 int ehea_rem_mr(struct ehea_mr *mr)
921 if (!mr || !mr->adapter)
924 hret = ehea_h_free_resource(mr->adapter->handle, mr->handle,
926 if (hret != H_SUCCESS) {
927 pr_err("destroy MR failed\n");
934 int ehea_gen_smr(struct ehea_adapter *adapter, struct ehea_mr *old_mr,
935 struct ehea_mr *shared_mr)
939 hret = ehea_h_register_smr(adapter->handle, old_mr->handle,
940 old_mr->vaddr, EHEA_MR_ACC_CTRL,
941 adapter->pd, shared_mr);
942 if (hret != H_SUCCESS)
945 shared_mr->adapter = adapter;
950 static void print_error_data(u64 *data)
953 u64 type = EHEA_BMASK_GET(ERROR_DATA_TYPE, data[2]);
954 u64 resource = data[1];
956 length = EHEA_BMASK_GET(ERROR_DATA_LENGTH, data[0]);
958 if (length > EHEA_PAGESIZE)
959 length = EHEA_PAGESIZE;
961 if (type == EHEA_AER_RESTYPE_QP)
962 pr_err("QP (resource=%llX) state: AER=0x%llX, AERR=0x%llX, port=%llX\n",
963 resource, data[6], data[12], data[22]);
964 else if (type == EHEA_AER_RESTYPE_CQ)
965 pr_err("CQ (resource=%llX) state: AER=0x%llX\n",
967 else if (type == EHEA_AER_RESTYPE_EQ)
968 pr_err("EQ (resource=%llX) state: AER=0x%llX\n",
971 ehea_dump(data, length, "error data");
974 u64 ehea_error_data(struct ehea_adapter *adapter, u64 res_handle,
981 rblock = (void *)get_zeroed_page(GFP_KERNEL);
983 pr_err("Cannot allocate rblock memory\n");
987 ret = ehea_h_error_data(adapter->handle, res_handle, rblock);
989 if (ret == H_SUCCESS) {
990 type = EHEA_BMASK_GET(ERROR_DATA_TYPE, rblock[2]);
993 print_error_data(rblock);
994 } else if (ret == H_R_STATE) {
995 pr_err("No error data available: %llX\n", res_handle);
997 pr_err("Error data could not be fetched: %llX\n", res_handle);
999 free_page((unsigned long)rblock);