2 * linux/drivers/net/ehea/ehea_qmr.c
4 * eHEA ethernet device driver for IBM eServer System p
6 * (C) Copyright IBM Corp. 2006
9 * Christoph Raisch <raisch@de.ibm.com>
10 * Jan-Bernd Themann <themann@de.ibm.com>
11 * Thomas Klein <tklein@de.ibm.com>
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
29 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
32 #include <linux/slab.h>
34 #include "ehea_phyp.h"
37 struct ehea_bmap *ehea_bmap = NULL;
41 static void *hw_qpageit_get_inc(struct hw_queue *queue)
43 void *retvalue = hw_qeit_get(queue);
45 queue->current_q_offset += queue->pagesize;
46 if (queue->current_q_offset > queue->queue_length) {
47 queue->current_q_offset -= queue->pagesize;
49 } else if (((u64) retvalue) & (EHEA_PAGESIZE-1)) {
50 pr_err("not on pageboundary\n");
56 static int hw_queue_ctor(struct hw_queue *queue, const u32 nr_of_pages,
57 const u32 pagesize, const u32 qe_size)
59 int pages_per_kpage = PAGE_SIZE / pagesize;
62 if ((pagesize > PAGE_SIZE) || (!pages_per_kpage)) {
63 pr_err("pagesize conflict! kernel pagesize=%d, ehea pagesize=%d\n",
64 (int)PAGE_SIZE, (int)pagesize);
68 queue->queue_length = nr_of_pages * pagesize;
69 queue->queue_pages = kmalloc(nr_of_pages * sizeof(void *), GFP_KERNEL);
70 if (!queue->queue_pages) {
71 pr_err("no mem for queue_pages\n");
76 * allocate pages for queue:
77 * outer loop allocates whole kernel pages (page aligned) and
78 * inner loop divides a kernel page into smaller hea queue pages
81 while (i < nr_of_pages) {
82 u8 *kpage = (u8 *)get_zeroed_page(GFP_KERNEL);
85 for (k = 0; k < pages_per_kpage && i < nr_of_pages; k++) {
86 (queue->queue_pages)[i] = (struct ehea_page *)kpage;
92 queue->current_q_offset = 0;
93 queue->qe_size = qe_size;
94 queue->pagesize = pagesize;
95 queue->toggle_state = 1;
99 for (i = 0; i < nr_of_pages; i += pages_per_kpage) {
100 if (!(queue->queue_pages)[i])
102 free_page((unsigned long)(queue->queue_pages)[i]);
107 static void hw_queue_dtor(struct hw_queue *queue)
109 int pages_per_kpage = PAGE_SIZE / queue->pagesize;
112 if (!queue || !queue->queue_pages)
115 nr_pages = queue->queue_length / queue->pagesize;
117 for (i = 0; i < nr_pages; i += pages_per_kpage)
118 free_page((unsigned long)(queue->queue_pages)[i]);
120 kfree(queue->queue_pages);
123 struct ehea_cq *ehea_create_cq(struct ehea_adapter *adapter,
124 int nr_of_cqe, u64 eq_handle, u32 cq_token)
128 u64 *cq_handle_ref, hret, rpage;
129 u32 act_nr_of_entries, act_pages, counter;
133 cq = kzalloc(sizeof(*cq), GFP_KERNEL);
135 pr_err("no mem for cq\n");
139 cq->attr.max_nr_of_cqes = nr_of_cqe;
140 cq->attr.cq_token = cq_token;
141 cq->attr.eq_handle = eq_handle;
143 cq->adapter = adapter;
145 cq_handle_ref = &cq->fw_handle;
146 act_nr_of_entries = 0;
149 hret = ehea_h_alloc_resource_cq(adapter->handle, &cq->attr,
150 &cq->fw_handle, &cq->epas);
151 if (hret != H_SUCCESS) {
152 pr_err("alloc_resource_cq failed\n");
156 ret = hw_queue_ctor(&cq->hw_queue, cq->attr.nr_pages,
157 EHEA_PAGESIZE, sizeof(struct ehea_cqe));
161 for (counter = 0; counter < cq->attr.nr_pages; counter++) {
162 vpage = hw_qpageit_get_inc(&cq->hw_queue);
164 pr_err("hw_qpageit_get_inc failed\n");
168 rpage = virt_to_abs(vpage);
169 hret = ehea_h_register_rpage(adapter->handle,
170 0, EHEA_CQ_REGISTER_ORIG,
171 cq->fw_handle, rpage, 1);
172 if (hret < H_SUCCESS) {
173 pr_err("register_rpage_cq failed ehea_cq=%p hret=%llx counter=%i act_pages=%i\n",
174 cq, hret, counter, cq->attr.nr_pages);
178 if (counter == (cq->attr.nr_pages - 1)) {
179 vpage = hw_qpageit_get_inc(&cq->hw_queue);
181 if ((hret != H_SUCCESS) || (vpage)) {
182 pr_err("registration of pages not complete hret=%llx\n",
187 if (hret != H_PAGE_REGISTERED) {
188 pr_err("CQ: registration of page failed hret=%llx\n",
195 hw_qeit_reset(&cq->hw_queue);
196 epa = cq->epas.kernel;
197 ehea_reset_cq_ep(cq);
198 ehea_reset_cq_n1(cq);
203 hw_queue_dtor(&cq->hw_queue);
206 ehea_h_free_resource(adapter->handle, cq->fw_handle, FORCE_FREE);
215 u64 ehea_destroy_cq_res(struct ehea_cq *cq, u64 force)
218 u64 adapter_handle = cq->adapter->handle;
220 /* deregister all previous registered pages */
221 hret = ehea_h_free_resource(adapter_handle, cq->fw_handle, force);
222 if (hret != H_SUCCESS)
225 hw_queue_dtor(&cq->hw_queue);
231 int ehea_destroy_cq(struct ehea_cq *cq)
237 hcp_epas_dtor(&cq->epas);
238 hret = ehea_destroy_cq_res(cq, NORMAL_FREE);
239 if (hret == H_R_STATE) {
240 ehea_error_data(cq->adapter, cq->fw_handle, &aer, &aerr);
241 hret = ehea_destroy_cq_res(cq, FORCE_FREE);
244 if (hret != H_SUCCESS) {
245 pr_err("destroy CQ failed\n");
252 struct ehea_eq *ehea_create_eq(struct ehea_adapter *adapter,
253 const enum ehea_eq_type type,
254 const u32 max_nr_of_eqes, const u8 eqe_gen)
261 eq = kzalloc(sizeof(*eq), GFP_KERNEL);
263 pr_err("no mem for eq\n");
267 eq->adapter = adapter;
268 eq->attr.type = type;
269 eq->attr.max_nr_of_eqes = max_nr_of_eqes;
270 eq->attr.eqe_gen = eqe_gen;
271 spin_lock_init(&eq->spinlock);
273 hret = ehea_h_alloc_resource_eq(adapter->handle,
274 &eq->attr, &eq->fw_handle);
275 if (hret != H_SUCCESS) {
276 pr_err("alloc_resource_eq failed\n");
280 ret = hw_queue_ctor(&eq->hw_queue, eq->attr.nr_pages,
281 EHEA_PAGESIZE, sizeof(struct ehea_eqe));
283 pr_err("can't allocate eq pages\n");
287 for (i = 0; i < eq->attr.nr_pages; i++) {
288 vpage = hw_qpageit_get_inc(&eq->hw_queue);
290 pr_err("hw_qpageit_get_inc failed\n");
295 rpage = virt_to_abs(vpage);
297 hret = ehea_h_register_rpage(adapter->handle, 0,
298 EHEA_EQ_REGISTER_ORIG,
299 eq->fw_handle, rpage, 1);
301 if (i == (eq->attr.nr_pages - 1)) {
303 vpage = hw_qpageit_get_inc(&eq->hw_queue);
304 if ((hret != H_SUCCESS) || (vpage))
308 if (hret != H_PAGE_REGISTERED)
314 hw_qeit_reset(&eq->hw_queue);
318 hw_queue_dtor(&eq->hw_queue);
321 ehea_h_free_resource(adapter->handle, eq->fw_handle, FORCE_FREE);
328 struct ehea_eqe *ehea_poll_eq(struct ehea_eq *eq)
330 struct ehea_eqe *eqe;
333 spin_lock_irqsave(&eq->spinlock, flags);
334 eqe = hw_eqit_eq_get_inc_valid(&eq->hw_queue);
335 spin_unlock_irqrestore(&eq->spinlock, flags);
340 u64 ehea_destroy_eq_res(struct ehea_eq *eq, u64 force)
345 spin_lock_irqsave(&eq->spinlock, flags);
347 hret = ehea_h_free_resource(eq->adapter->handle, eq->fw_handle, force);
348 spin_unlock_irqrestore(&eq->spinlock, flags);
350 if (hret != H_SUCCESS)
353 hw_queue_dtor(&eq->hw_queue);
359 int ehea_destroy_eq(struct ehea_eq *eq)
365 hcp_epas_dtor(&eq->epas);
367 hret = ehea_destroy_eq_res(eq, NORMAL_FREE);
368 if (hret == H_R_STATE) {
369 ehea_error_data(eq->adapter, eq->fw_handle, &aer, &aerr);
370 hret = ehea_destroy_eq_res(eq, FORCE_FREE);
373 if (hret != H_SUCCESS) {
374 pr_err("destroy EQ failed\n");
382 * allocates memory for a queue and registers pages in phyp
384 int ehea_qp_alloc_register(struct ehea_qp *qp, struct hw_queue *hw_queue,
385 int nr_pages, int wqe_size, int act_nr_sges,
386 struct ehea_adapter *adapter, int h_call_q_selector)
392 ret = hw_queue_ctor(hw_queue, nr_pages, EHEA_PAGESIZE, wqe_size);
396 for (cnt = 0; cnt < nr_pages; cnt++) {
397 vpage = hw_qpageit_get_inc(hw_queue);
399 pr_err("hw_qpageit_get_inc failed\n");
402 rpage = virt_to_abs(vpage);
403 hret = ehea_h_register_rpage(adapter->handle,
404 0, h_call_q_selector,
405 qp->fw_handle, rpage, 1);
406 if (hret < H_SUCCESS) {
407 pr_err("register_rpage_qp failed\n");
411 hw_qeit_reset(hw_queue);
415 hw_queue_dtor(hw_queue);
419 static inline u32 map_wqe_size(u8 wqe_enc_size)
421 return 128 << wqe_enc_size;
424 struct ehea_qp *ehea_create_qp(struct ehea_adapter *adapter,
425 u32 pd, struct ehea_qp_init_attr *init_attr)
430 u32 wqe_size_in_bytes_sq, wqe_size_in_bytes_rq1;
431 u32 wqe_size_in_bytes_rq2, wqe_size_in_bytes_rq3;
434 qp = kzalloc(sizeof(*qp), GFP_KERNEL);
436 pr_err("no mem for qp\n");
440 qp->adapter = adapter;
442 hret = ehea_h_alloc_resource_qp(adapter->handle, init_attr, pd,
443 &qp->fw_handle, &qp->epas);
444 if (hret != H_SUCCESS) {
445 pr_err("ehea_h_alloc_resource_qp failed\n");
449 wqe_size_in_bytes_sq = map_wqe_size(init_attr->act_wqe_size_enc_sq);
450 wqe_size_in_bytes_rq1 = map_wqe_size(init_attr->act_wqe_size_enc_rq1);
451 wqe_size_in_bytes_rq2 = map_wqe_size(init_attr->act_wqe_size_enc_rq2);
452 wqe_size_in_bytes_rq3 = map_wqe_size(init_attr->act_wqe_size_enc_rq3);
454 ret = ehea_qp_alloc_register(qp, &qp->hw_squeue, init_attr->nr_sq_pages,
455 wqe_size_in_bytes_sq,
456 init_attr->act_wqe_size_enc_sq, adapter,
459 pr_err("can't register for sq ret=%x\n", ret);
463 ret = ehea_qp_alloc_register(qp, &qp->hw_rqueue1,
464 init_attr->nr_rq1_pages,
465 wqe_size_in_bytes_rq1,
466 init_attr->act_wqe_size_enc_rq1,
469 pr_err("can't register for rq1 ret=%x\n", ret);
473 if (init_attr->rq_count > 1) {
474 ret = ehea_qp_alloc_register(qp, &qp->hw_rqueue2,
475 init_attr->nr_rq2_pages,
476 wqe_size_in_bytes_rq2,
477 init_attr->act_wqe_size_enc_rq2,
480 pr_err("can't register for rq2 ret=%x\n", ret);
485 if (init_attr->rq_count > 2) {
486 ret = ehea_qp_alloc_register(qp, &qp->hw_rqueue3,
487 init_attr->nr_rq3_pages,
488 wqe_size_in_bytes_rq3,
489 init_attr->act_wqe_size_enc_rq3,
492 pr_err("can't register for rq3 ret=%x\n", ret);
497 qp->init_attr = *init_attr;
502 hw_queue_dtor(&qp->hw_rqueue2);
505 hw_queue_dtor(&qp->hw_rqueue1);
508 hw_queue_dtor(&qp->hw_squeue);
511 ehea_h_disable_and_get_hea(adapter->handle, qp->fw_handle);
512 ehea_h_free_resource(adapter->handle, qp->fw_handle, FORCE_FREE);
519 u64 ehea_destroy_qp_res(struct ehea_qp *qp, u64 force)
522 struct ehea_qp_init_attr *qp_attr = &qp->init_attr;
525 ehea_h_disable_and_get_hea(qp->adapter->handle, qp->fw_handle);
526 hret = ehea_h_free_resource(qp->adapter->handle, qp->fw_handle, force);
527 if (hret != H_SUCCESS)
530 hw_queue_dtor(&qp->hw_squeue);
531 hw_queue_dtor(&qp->hw_rqueue1);
533 if (qp_attr->rq_count > 1)
534 hw_queue_dtor(&qp->hw_rqueue2);
535 if (qp_attr->rq_count > 2)
536 hw_queue_dtor(&qp->hw_rqueue3);
542 int ehea_destroy_qp(struct ehea_qp *qp)
548 hcp_epas_dtor(&qp->epas);
550 hret = ehea_destroy_qp_res(qp, NORMAL_FREE);
551 if (hret == H_R_STATE) {
552 ehea_error_data(qp->adapter, qp->fw_handle, &aer, &aerr);
553 hret = ehea_destroy_qp_res(qp, FORCE_FREE);
556 if (hret != H_SUCCESS) {
557 pr_err("destroy QP failed\n");
564 static inline int ehea_calc_index(unsigned long i, unsigned long s)
566 return (i >> s) & EHEA_INDEX_MASK;
569 static inline int ehea_init_top_bmap(struct ehea_top_bmap *ehea_top_bmap,
572 if (!ehea_top_bmap->dir[dir]) {
573 ehea_top_bmap->dir[dir] =
574 kzalloc(sizeof(struct ehea_dir_bmap), GFP_KERNEL);
575 if (!ehea_top_bmap->dir[dir])
581 static inline int ehea_init_bmap(struct ehea_bmap *ehea_bmap, int top, int dir)
583 if (!ehea_bmap->top[top]) {
584 ehea_bmap->top[top] =
585 kzalloc(sizeof(struct ehea_top_bmap), GFP_KERNEL);
586 if (!ehea_bmap->top[top])
589 return ehea_init_top_bmap(ehea_bmap->top[top], dir);
592 static DEFINE_MUTEX(ehea_busmap_mutex);
593 static unsigned long ehea_mr_len;
595 #define EHEA_BUSMAP_ADD_SECT 1
596 #define EHEA_BUSMAP_REM_SECT 0
598 static void ehea_rebuild_busmap(void)
600 u64 vaddr = EHEA_BUSMAP_START;
603 for (top = 0; top < EHEA_MAP_ENTRIES; top++) {
604 struct ehea_top_bmap *ehea_top;
605 int valid_dir_entries = 0;
607 if (!ehea_bmap->top[top])
609 ehea_top = ehea_bmap->top[top];
610 for (dir = 0; dir < EHEA_MAP_ENTRIES; dir++) {
611 struct ehea_dir_bmap *ehea_dir;
612 int valid_entries = 0;
614 if (!ehea_top->dir[dir])
617 ehea_dir = ehea_top->dir[dir];
618 for (idx = 0; idx < EHEA_MAP_ENTRIES; idx++) {
619 if (!ehea_dir->ent[idx])
622 ehea_dir->ent[idx] = vaddr;
623 vaddr += EHEA_SECTSIZE;
625 if (!valid_entries) {
626 ehea_top->dir[dir] = NULL;
630 if (!valid_dir_entries) {
631 ehea_bmap->top[top] = NULL;
637 static int ehea_update_busmap(unsigned long pfn, unsigned long nr_pages, int add)
639 unsigned long i, start_section, end_section;
645 ehea_bmap = kzalloc(sizeof(struct ehea_bmap), GFP_KERNEL);
650 start_section = (pfn * PAGE_SIZE) / EHEA_SECTSIZE;
651 end_section = start_section + ((nr_pages * PAGE_SIZE) / EHEA_SECTSIZE);
652 /* Mark entries as valid or invalid only; address is assigned later */
653 for (i = start_section; i < end_section; i++) {
655 int top = ehea_calc_index(i, EHEA_TOP_INDEX_SHIFT);
656 int dir = ehea_calc_index(i, EHEA_DIR_INDEX_SHIFT);
657 int idx = i & EHEA_INDEX_MASK;
660 int ret = ehea_init_bmap(ehea_bmap, top, dir);
663 flag = 1; /* valid */
664 ehea_mr_len += EHEA_SECTSIZE;
666 if (!ehea_bmap->top[top])
668 if (!ehea_bmap->top[top]->dir[dir])
670 flag = 0; /* invalid */
671 ehea_mr_len -= EHEA_SECTSIZE;
674 ehea_bmap->top[top]->dir[dir]->ent[idx] = flag;
676 ehea_rebuild_busmap(); /* Assign contiguous addresses for mr */
680 int ehea_add_sect_bmap(unsigned long pfn, unsigned long nr_pages)
684 mutex_lock(&ehea_busmap_mutex);
685 ret = ehea_update_busmap(pfn, nr_pages, EHEA_BUSMAP_ADD_SECT);
686 mutex_unlock(&ehea_busmap_mutex);
690 int ehea_rem_sect_bmap(unsigned long pfn, unsigned long nr_pages)
694 mutex_lock(&ehea_busmap_mutex);
695 ret = ehea_update_busmap(pfn, nr_pages, EHEA_BUSMAP_REM_SECT);
696 mutex_unlock(&ehea_busmap_mutex);
700 static int ehea_is_hugepage(unsigned long pfn)
704 if (pfn & EHEA_HUGEPAGE_PFN_MASK)
707 page_order = compound_order(pfn_to_page(pfn));
708 if (page_order + PAGE_SHIFT != EHEA_HUGEPAGESHIFT)
714 static int ehea_create_busmap_callback(unsigned long initial_pfn,
715 unsigned long total_nr_pages, void *arg)
718 unsigned long pfn, start_pfn, end_pfn, nr_pages;
720 if ((total_nr_pages * PAGE_SIZE) < EHEA_HUGEPAGE_SIZE)
721 return ehea_update_busmap(initial_pfn, total_nr_pages,
722 EHEA_BUSMAP_ADD_SECT);
724 /* Given chunk is >= 16GB -> check for hugepages */
725 start_pfn = initial_pfn;
726 end_pfn = initial_pfn + total_nr_pages;
729 while (pfn < end_pfn) {
730 if (ehea_is_hugepage(pfn)) {
731 /* Add mem found in front of the hugepage */
732 nr_pages = pfn - start_pfn;
733 ret = ehea_update_busmap(start_pfn, nr_pages,
734 EHEA_BUSMAP_ADD_SECT);
738 /* Skip the hugepage */
739 pfn += (EHEA_HUGEPAGE_SIZE / PAGE_SIZE);
742 pfn += (EHEA_SECTSIZE / PAGE_SIZE);
745 /* Add mem found behind the hugepage(s) */
746 nr_pages = pfn - start_pfn;
747 return ehea_update_busmap(start_pfn, nr_pages, EHEA_BUSMAP_ADD_SECT);
750 int ehea_create_busmap(void)
754 mutex_lock(&ehea_busmap_mutex);
756 ret = walk_system_ram_range(0, 1ULL << MAX_PHYSMEM_BITS, NULL,
757 ehea_create_busmap_callback);
758 mutex_unlock(&ehea_busmap_mutex);
762 void ehea_destroy_busmap(void)
765 mutex_lock(&ehea_busmap_mutex);
769 for (top = 0; top < EHEA_MAP_ENTRIES; top++) {
770 if (!ehea_bmap->top[top])
773 for (dir = 0; dir < EHEA_MAP_ENTRIES; dir++) {
774 if (!ehea_bmap->top[top]->dir[dir])
777 kfree(ehea_bmap->top[top]->dir[dir]);
780 kfree(ehea_bmap->top[top]);
786 mutex_unlock(&ehea_busmap_mutex);
789 u64 ehea_map_vaddr(void *caddr)
792 unsigned long index, offset;
795 return EHEA_INVAL_ADDR;
797 index = virt_to_abs(caddr) >> SECTION_SIZE_BITS;
798 top = (index >> EHEA_TOP_INDEX_SHIFT) & EHEA_INDEX_MASK;
799 if (!ehea_bmap->top[top])
800 return EHEA_INVAL_ADDR;
802 dir = (index >> EHEA_DIR_INDEX_SHIFT) & EHEA_INDEX_MASK;
803 if (!ehea_bmap->top[top]->dir[dir])
804 return EHEA_INVAL_ADDR;
806 idx = index & EHEA_INDEX_MASK;
807 if (!ehea_bmap->top[top]->dir[dir]->ent[idx])
808 return EHEA_INVAL_ADDR;
810 offset = (unsigned long)caddr & (EHEA_SECTSIZE - 1);
811 return ehea_bmap->top[top]->dir[dir]->ent[idx] | offset;
814 static inline void *ehea_calc_sectbase(int top, int dir, int idx)
816 unsigned long ret = idx;
817 ret |= dir << EHEA_DIR_INDEX_SHIFT;
818 ret |= top << EHEA_TOP_INDEX_SHIFT;
819 return abs_to_virt(ret << SECTION_SIZE_BITS);
822 static u64 ehea_reg_mr_section(int top, int dir, int idx, u64 *pt,
823 struct ehea_adapter *adapter,
829 u64 pt_abs = virt_to_abs(pt);
831 void *sectbase = ehea_calc_sectbase(top, dir, idx);
833 for (j = 0; j < (EHEA_PAGES_PER_SECTION / EHEA_MAX_RPAGE); j++) {
835 for (m = 0; m < EHEA_MAX_RPAGE; m++) {
836 pg = sectbase + ((k++) * EHEA_PAGESIZE);
837 pt[m] = virt_to_abs(pg);
839 hret = ehea_h_register_rpage_mr(adapter->handle, mr->handle, 0,
840 0, pt_abs, EHEA_MAX_RPAGE);
842 if ((hret != H_SUCCESS) &&
843 (hret != H_PAGE_REGISTERED)) {
844 ehea_h_free_resource(adapter->handle, mr->handle,
846 pr_err("register_rpage_mr failed\n");
853 static u64 ehea_reg_mr_sections(int top, int dir, u64 *pt,
854 struct ehea_adapter *adapter,
857 u64 hret = H_SUCCESS;
860 for (idx = 0; idx < EHEA_MAP_ENTRIES; idx++) {
861 if (!ehea_bmap->top[top]->dir[dir]->ent[idx])
864 hret = ehea_reg_mr_section(top, dir, idx, pt, adapter, mr);
865 if ((hret != H_SUCCESS) && (hret != H_PAGE_REGISTERED))
871 static u64 ehea_reg_mr_dir_sections(int top, u64 *pt,
872 struct ehea_adapter *adapter,
875 u64 hret = H_SUCCESS;
878 for (dir = 0; dir < EHEA_MAP_ENTRIES; dir++) {
879 if (!ehea_bmap->top[top]->dir[dir])
882 hret = ehea_reg_mr_sections(top, dir, pt, adapter, mr);
883 if ((hret != H_SUCCESS) && (hret != H_PAGE_REGISTERED))
889 int ehea_reg_kernel_mr(struct ehea_adapter *adapter, struct ehea_mr *mr)
894 u32 acc_ctrl = EHEA_MR_ACC_CTRL;
898 pt = (void *)get_zeroed_page(GFP_KERNEL);
905 hret = ehea_h_alloc_resource_mr(adapter->handle, EHEA_BUSMAP_START,
906 ehea_mr_len, acc_ctrl, adapter->pd,
907 &mr->handle, &mr->lkey);
909 if (hret != H_SUCCESS) {
910 pr_err("alloc_resource_mr failed\n");
916 ehea_h_free_resource(adapter->handle, mr->handle, FORCE_FREE);
917 pr_err("no busmap available\n");
922 for (top = 0; top < EHEA_MAP_ENTRIES; top++) {
923 if (!ehea_bmap->top[top])
926 hret = ehea_reg_mr_dir_sections(top, pt, adapter, mr);
927 if((hret != H_PAGE_REGISTERED) && (hret != H_SUCCESS))
931 if (hret != H_SUCCESS) {
932 ehea_h_free_resource(adapter->handle, mr->handle, FORCE_FREE);
933 pr_err("registering mr failed\n");
938 mr->vaddr = EHEA_BUSMAP_START;
939 mr->adapter = adapter;
942 free_page((unsigned long)pt);
946 int ehea_rem_mr(struct ehea_mr *mr)
950 if (!mr || !mr->adapter)
953 hret = ehea_h_free_resource(mr->adapter->handle, mr->handle,
955 if (hret != H_SUCCESS) {
956 pr_err("destroy MR failed\n");
963 int ehea_gen_smr(struct ehea_adapter *adapter, struct ehea_mr *old_mr,
964 struct ehea_mr *shared_mr)
968 hret = ehea_h_register_smr(adapter->handle, old_mr->handle,
969 old_mr->vaddr, EHEA_MR_ACC_CTRL,
970 adapter->pd, shared_mr);
971 if (hret != H_SUCCESS)
974 shared_mr->adapter = adapter;
979 void print_error_data(u64 *data)
982 u64 type = EHEA_BMASK_GET(ERROR_DATA_TYPE, data[2]);
983 u64 resource = data[1];
985 length = EHEA_BMASK_GET(ERROR_DATA_LENGTH, data[0]);
987 if (length > EHEA_PAGESIZE)
988 length = EHEA_PAGESIZE;
990 if (type == EHEA_AER_RESTYPE_QP)
991 pr_err("QP (resource=%llX) state: AER=0x%llX, AERR=0x%llX, port=%llX\n",
992 resource, data[6], data[12], data[22]);
993 else if (type == EHEA_AER_RESTYPE_CQ)
994 pr_err("CQ (resource=%llX) state: AER=0x%llX\n",
996 else if (type == EHEA_AER_RESTYPE_EQ)
997 pr_err("EQ (resource=%llX) state: AER=0x%llX\n",
1000 ehea_dump(data, length, "error data");
1003 u64 ehea_error_data(struct ehea_adapter *adapter, u64 res_handle,
1004 u64 *aer, u64 *aerr)
1010 rblock = (void *)get_zeroed_page(GFP_KERNEL);
1012 pr_err("Cannot allocate rblock memory\n");
1016 ret = ehea_h_error_data(adapter->handle, res_handle, rblock);
1018 if (ret == H_SUCCESS) {
1019 type = EHEA_BMASK_GET(ERROR_DATA_TYPE, rblock[2]);
1022 print_error_data(rblock);
1023 } else if (ret == H_R_STATE) {
1024 pr_err("No error data available: %llX\n", res_handle);
1026 pr_err("Error data could not be fetched: %llX\n", res_handle);
1028 free_page((unsigned long)rblock);