summaryrefslogtreecommitdiff
path: root/cleopatre/linux-2.6.25.10-spc300/drivers/net/ehea/ehea_qmr.c
diff options
context:
space:
mode:
Diffstat (limited to 'cleopatre/linux-2.6.25.10-spc300/drivers/net/ehea/ehea_qmr.c')
-rw-r--r--cleopatre/linux-2.6.25.10-spc300/drivers/net/ehea/ehea_qmr.c779
1 files changed, 779 insertions, 0 deletions
diff --git a/cleopatre/linux-2.6.25.10-spc300/drivers/net/ehea/ehea_qmr.c b/cleopatre/linux-2.6.25.10-spc300/drivers/net/ehea/ehea_qmr.c
new file mode 100644
index 0000000000..d522e905f4
--- /dev/null
+++ b/cleopatre/linux-2.6.25.10-spc300/drivers/net/ehea/ehea_qmr.c
@@ -0,0 +1,779 @@
+/*
+ * linux/drivers/net/ehea/ehea_qmr.c
+ *
+ * eHEA ethernet device driver for IBM eServer System p
+ *
+ * (C) Copyright IBM Corp. 2006
+ *
+ * Authors:
+ * Christoph Raisch <raisch@de.ibm.com>
+ * Jan-Bernd Themann <themann@de.ibm.com>
+ * Thomas Klein <tklein@de.ibm.com>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/mm.h>
+#include "ehea.h"
+#include "ehea_phyp.h"
+#include "ehea_qmr.h"
+
+
+struct ehea_busmap ehea_bmap = { 0, 0, NULL };
+
+
+static void *hw_qpageit_get_inc(struct hw_queue *queue)
+{
+ void *retvalue = hw_qeit_get(queue);
+
+ queue->current_q_offset += queue->pagesize;
+ if (queue->current_q_offset > queue->queue_length) {
+ queue->current_q_offset -= queue->pagesize;
+ retvalue = NULL;
+ } else if (((u64) retvalue) & (EHEA_PAGESIZE-1)) {
+ ehea_error("not on pageboundary");
+ retvalue = NULL;
+ }
+ return retvalue;
+}
+
+static int hw_queue_ctor(struct hw_queue *queue, const u32 nr_of_pages,
+ const u32 pagesize, const u32 qe_size)
+{
+ int pages_per_kpage = PAGE_SIZE / pagesize;
+ int i, k;
+
+ if ((pagesize > PAGE_SIZE) || (!pages_per_kpage)) {
+ ehea_error("pagesize conflict! kernel pagesize=%d, "
+ "ehea pagesize=%d", (int)PAGE_SIZE, (int)pagesize);
+ return -EINVAL;
+ }
+
+ queue->queue_length = nr_of_pages * pagesize;
+ queue->queue_pages = kmalloc(nr_of_pages * sizeof(void *), GFP_KERNEL);
+ if (!queue->queue_pages) {
+ ehea_error("no mem for queue_pages");
+ return -ENOMEM;
+ }
+
+ /*
+ * allocate pages for queue:
+ * outer loop allocates whole kernel pages (page aligned) and
+ * inner loop divides a kernel page into smaller hea queue pages
+ */
+ i = 0;
+ while (i < nr_of_pages) {
+ u8 *kpage = (u8 *)get_zeroed_page(GFP_KERNEL);
+ if (!kpage)
+ goto out_nomem;
+ for (k = 0; k < pages_per_kpage && i < nr_of_pages; k++) {
+ (queue->queue_pages)[i] = (struct ehea_page *)kpage;
+ kpage += pagesize;
+ i++;
+ }
+ }
+
+ queue->current_q_offset = 0;
+ queue->qe_size = qe_size;
+ queue->pagesize = pagesize;
+ queue->toggle_state = 1;
+
+ return 0;
+out_nomem:
+ for (i = 0; i < nr_of_pages; i += pages_per_kpage) {
+ if (!(queue->queue_pages)[i])
+ break;
+ free_page((unsigned long)(queue->queue_pages)[i]);
+ }
+ return -ENOMEM;
+}
+
+static void hw_queue_dtor(struct hw_queue *queue)
+{
+ int pages_per_kpage = PAGE_SIZE / queue->pagesize;
+ int i, nr_pages;
+
+ if (!queue || !queue->queue_pages)
+ return;
+
+ nr_pages = queue->queue_length / queue->pagesize;
+
+ for (i = 0; i < nr_pages; i += pages_per_kpage)
+ free_page((unsigned long)(queue->queue_pages)[i]);
+
+ kfree(queue->queue_pages);
+}
+
+struct ehea_cq *ehea_create_cq(struct ehea_adapter *adapter,
+ int nr_of_cqe, u64 eq_handle, u32 cq_token)
+{
+ struct ehea_cq *cq;
+ struct h_epa epa;
+ u64 *cq_handle_ref, hret, rpage;
+ u32 act_nr_of_entries, act_pages, counter;
+ int ret;
+ void *vpage;
+
+ cq = kzalloc(sizeof(*cq), GFP_KERNEL);
+ if (!cq) {
+ ehea_error("no mem for cq");
+ goto out_nomem;
+ }
+
+ cq->attr.max_nr_of_cqes = nr_of_cqe;
+ cq->attr.cq_token = cq_token;
+ cq->attr.eq_handle = eq_handle;
+
+ cq->adapter = adapter;
+
+ cq_handle_ref = &cq->fw_handle;
+ act_nr_of_entries = 0;
+ act_pages = 0;
+
+ hret = ehea_h_alloc_resource_cq(adapter->handle, &cq->attr,
+ &cq->fw_handle, &cq->epas);
+ if (hret != H_SUCCESS) {
+ ehea_error("alloc_resource_cq failed");
+ goto out_freemem;
+ }
+
+ ret = hw_queue_ctor(&cq->hw_queue, cq->attr.nr_pages,
+ EHEA_PAGESIZE, sizeof(struct ehea_cqe));
+ if (ret)
+ goto out_freeres;
+
+ for (counter = 0; counter < cq->attr.nr_pages; counter++) {
+ vpage = hw_qpageit_get_inc(&cq->hw_queue);
+ if (!vpage) {
+ ehea_error("hw_qpageit_get_inc failed");
+ goto out_kill_hwq;
+ }
+
+ rpage = virt_to_abs(vpage);
+ hret = ehea_h_register_rpage(adapter->handle,
+ 0, EHEA_CQ_REGISTER_ORIG,
+ cq->fw_handle, rpage, 1);
+ if (hret < H_SUCCESS) {
+ ehea_error("register_rpage_cq failed ehea_cq=%p "
+ "hret=%lx counter=%i act_pages=%i",
+ cq, hret, counter, cq->attr.nr_pages);
+ goto out_kill_hwq;
+ }
+
+ if (counter == (cq->attr.nr_pages - 1)) {
+ vpage = hw_qpageit_get_inc(&cq->hw_queue);
+
+ if ((hret != H_SUCCESS) || (vpage)) {
+ ehea_error("registration of pages not "
+ "complete hret=%lx\n", hret);
+ goto out_kill_hwq;
+ }
+ } else {
+ if ((hret != H_PAGE_REGISTERED) || (!vpage)) {
+ ehea_error("CQ: registration of page failed "
+ "hret=%lx\n", hret);
+ goto out_kill_hwq;
+ }
+ }
+ }
+
+ hw_qeit_reset(&cq->hw_queue);
+ epa = cq->epas.kernel;
+ ehea_reset_cq_ep(cq);
+ ehea_reset_cq_n1(cq);
+
+ return cq;
+
+out_kill_hwq:
+ hw_queue_dtor(&cq->hw_queue);
+
+out_freeres:
+ ehea_h_free_resource(adapter->handle, cq->fw_handle, FORCE_FREE);
+
+out_freemem:
+ kfree(cq);
+
+out_nomem:
+ return NULL;
+}
+
+u64 ehea_destroy_cq_res(struct ehea_cq *cq, u64 force)
+{
+ u64 hret;
+ u64 adapter_handle = cq->adapter->handle;
+
+ /* deregister all previous registered pages */
+ hret = ehea_h_free_resource(adapter_handle, cq->fw_handle, force);
+ if (hret != H_SUCCESS)
+ return hret;
+
+ hw_queue_dtor(&cq->hw_queue);
+ kfree(cq);
+
+ return hret;
+}
+
+int ehea_destroy_cq(struct ehea_cq *cq)
+{
+ u64 hret;
+ if (!cq)
+ return 0;
+
+ hcp_epas_dtor(&cq->epas);
+ hret = ehea_destroy_cq_res(cq, NORMAL_FREE);
+ if (hret == H_R_STATE) {
+ ehea_error_data(cq->adapter, cq->fw_handle);
+ hret = ehea_destroy_cq_res(cq, FORCE_FREE);
+ }
+
+ if (hret != H_SUCCESS) {
+ ehea_error("destroy CQ failed");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+struct ehea_eq *ehea_create_eq(struct ehea_adapter *adapter,
+ const enum ehea_eq_type type,
+ const u32 max_nr_of_eqes, const u8 eqe_gen)
+{
+ int ret, i;
+ u64 hret, rpage;
+ void *vpage;
+ struct ehea_eq *eq;
+
+ eq = kzalloc(sizeof(*eq), GFP_KERNEL);
+ if (!eq) {
+ ehea_error("no mem for eq");
+ return NULL;
+ }
+
+ eq->adapter = adapter;
+ eq->attr.type = type;
+ eq->attr.max_nr_of_eqes = max_nr_of_eqes;
+ eq->attr.eqe_gen = eqe_gen;
+ spin_lock_init(&eq->spinlock);
+
+ hret = ehea_h_alloc_resource_eq(adapter->handle,
+ &eq->attr, &eq->fw_handle);
+ if (hret != H_SUCCESS) {
+ ehea_error("alloc_resource_eq failed");
+ goto out_freemem;
+ }
+
+ ret = hw_queue_ctor(&eq->hw_queue, eq->attr.nr_pages,
+ EHEA_PAGESIZE, sizeof(struct ehea_eqe));
+ if (ret) {
+ ehea_error("can't allocate eq pages");
+ goto out_freeres;
+ }
+
+ for (i = 0; i < eq->attr.nr_pages; i++) {
+ vpage = hw_qpageit_get_inc(&eq->hw_queue);
+ if (!vpage) {
+ ehea_error("hw_qpageit_get_inc failed");
+ hret = H_RESOURCE;
+ goto out_kill_hwq;
+ }
+
+ rpage = virt_to_abs(vpage);
+
+ hret = ehea_h_register_rpage(adapter->handle, 0,
+ EHEA_EQ_REGISTER_ORIG,
+ eq->fw_handle, rpage, 1);
+
+ if (i == (eq->attr.nr_pages - 1)) {
+ /* last page */
+ vpage = hw_qpageit_get_inc(&eq->hw_queue);
+ if ((hret != H_SUCCESS) || (vpage))
+ goto out_kill_hwq;
+
+ } else {
+ if ((hret != H_PAGE_REGISTERED) || (!vpage))
+ goto out_kill_hwq;
+
+ }
+ }
+
+ hw_qeit_reset(&eq->hw_queue);
+ return eq;
+
+out_kill_hwq:
+ hw_queue_dtor(&eq->hw_queue);
+
+out_freeres:
+ ehea_h_free_resource(adapter->handle, eq->fw_handle, FORCE_FREE);
+
+out_freemem:
+ kfree(eq);
+ return NULL;
+}
+
+struct ehea_eqe *ehea_poll_eq(struct ehea_eq *eq)
+{
+ struct ehea_eqe *eqe;
+ unsigned long flags;
+
+ spin_lock_irqsave(&eq->spinlock, flags);
+ eqe = (struct ehea_eqe *)hw_eqit_eq_get_inc_valid(&eq->hw_queue);
+ spin_unlock_irqrestore(&eq->spinlock, flags);
+
+ return eqe;
+}
+
+u64 ehea_destroy_eq_res(struct ehea_eq *eq, u64 force)
+{
+ u64 hret;
+ unsigned long flags;
+
+ spin_lock_irqsave(&eq->spinlock, flags);
+
+ hret = ehea_h_free_resource(eq->adapter->handle, eq->fw_handle, force);
+ spin_unlock_irqrestore(&eq->spinlock, flags);
+
+ if (hret != H_SUCCESS)
+ return hret;
+
+ hw_queue_dtor(&eq->hw_queue);
+ kfree(eq);
+
+ return hret;
+}
+
+int ehea_destroy_eq(struct ehea_eq *eq)
+{
+ u64 hret;
+ if (!eq)
+ return 0;
+
+ hcp_epas_dtor(&eq->epas);
+
+ hret = ehea_destroy_eq_res(eq, NORMAL_FREE);
+ if (hret == H_R_STATE) {
+ ehea_error_data(eq->adapter, eq->fw_handle);
+ hret = ehea_destroy_eq_res(eq, FORCE_FREE);
+ }
+
+ if (hret != H_SUCCESS) {
+ ehea_error("destroy EQ failed");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+/**
+ * allocates memory for a queue and registers pages in phyp
+ */
+int ehea_qp_alloc_register(struct ehea_qp *qp, struct hw_queue *hw_queue,
+ int nr_pages, int wqe_size, int act_nr_sges,
+ struct ehea_adapter *adapter, int h_call_q_selector)
+{
+ u64 hret, rpage;
+ int ret, cnt;
+ void *vpage;
+
+ ret = hw_queue_ctor(hw_queue, nr_pages, EHEA_PAGESIZE, wqe_size);
+ if (ret)
+ return ret;
+
+ for (cnt = 0; cnt < nr_pages; cnt++) {
+ vpage = hw_qpageit_get_inc(hw_queue);
+ if (!vpage) {
+ ehea_error("hw_qpageit_get_inc failed");
+ goto out_kill_hwq;
+ }
+ rpage = virt_to_abs(vpage);
+ hret = ehea_h_register_rpage(adapter->handle,
+ 0, h_call_q_selector,
+ qp->fw_handle, rpage, 1);
+ if (hret < H_SUCCESS) {
+ ehea_error("register_rpage_qp failed");
+ goto out_kill_hwq;
+ }
+ }
+ hw_qeit_reset(hw_queue);
+ return 0;
+
+out_kill_hwq:
+ hw_queue_dtor(hw_queue);
+ return -EIO;
+}
+
+static inline u32 map_wqe_size(u8 wqe_enc_size)
+{
+ return 128 << wqe_enc_size;
+}
+
+struct ehea_qp *ehea_create_qp(struct ehea_adapter *adapter,
+ u32 pd, struct ehea_qp_init_attr *init_attr)
+{
+ int ret;
+ u64 hret;
+ struct ehea_qp *qp;
+ u32 wqe_size_in_bytes_sq, wqe_size_in_bytes_rq1;
+ u32 wqe_size_in_bytes_rq2, wqe_size_in_bytes_rq3;
+
+
+ qp = kzalloc(sizeof(*qp), GFP_KERNEL);
+ if (!qp) {
+ ehea_error("no mem for qp");
+ return NULL;
+ }
+
+ qp->adapter = adapter;
+
+ hret = ehea_h_alloc_resource_qp(adapter->handle, init_attr, pd,
+ &qp->fw_handle, &qp->epas);
+ if (hret != H_SUCCESS) {
+ ehea_error("ehea_h_alloc_resource_qp failed");
+ goto out_freemem;
+ }
+
+ wqe_size_in_bytes_sq = map_wqe_size(init_attr->act_wqe_size_enc_sq);
+ wqe_size_in_bytes_rq1 = map_wqe_size(init_attr->act_wqe_size_enc_rq1);
+ wqe_size_in_bytes_rq2 = map_wqe_size(init_attr->act_wqe_size_enc_rq2);
+ wqe_size_in_bytes_rq3 = map_wqe_size(init_attr->act_wqe_size_enc_rq3);
+
+ ret = ehea_qp_alloc_register(qp, &qp->hw_squeue, init_attr->nr_sq_pages,
+ wqe_size_in_bytes_sq,
+ init_attr->act_wqe_size_enc_sq, adapter,
+ 0);
+ if (ret) {
+ ehea_error("can't register for sq ret=%x", ret);
+ goto out_freeres;
+ }
+
+ ret = ehea_qp_alloc_register(qp, &qp->hw_rqueue1,
+ init_attr->nr_rq1_pages,
+ wqe_size_in_bytes_rq1,
+ init_attr->act_wqe_size_enc_rq1,
+ adapter, 1);
+ if (ret) {
+ ehea_error("can't register for rq1 ret=%x", ret);
+ goto out_kill_hwsq;
+ }
+
+ if (init_attr->rq_count > 1) {
+ ret = ehea_qp_alloc_register(qp, &qp->hw_rqueue2,
+ init_attr->nr_rq2_pages,
+ wqe_size_in_bytes_rq2,
+ init_attr->act_wqe_size_enc_rq2,
+ adapter, 2);
+ if (ret) {
+ ehea_error("can't register for rq2 ret=%x", ret);
+ goto out_kill_hwr1q;
+ }
+ }
+
+ if (init_attr->rq_count > 2) {
+ ret = ehea_qp_alloc_register(qp, &qp->hw_rqueue3,
+ init_attr->nr_rq3_pages,
+ wqe_size_in_bytes_rq3,
+ init_attr->act_wqe_size_enc_rq3,
+ adapter, 3);
+ if (ret) {
+ ehea_error("can't register for rq3 ret=%x", ret);
+ goto out_kill_hwr2q;
+ }
+ }
+
+ qp->init_attr = *init_attr;
+
+ return qp;
+
+out_kill_hwr2q:
+ hw_queue_dtor(&qp->hw_rqueue2);
+
+out_kill_hwr1q:
+ hw_queue_dtor(&qp->hw_rqueue1);
+
+out_kill_hwsq:
+ hw_queue_dtor(&qp->hw_squeue);
+
+out_freeres:
+ ehea_h_disable_and_get_hea(adapter->handle, qp->fw_handle);
+ ehea_h_free_resource(adapter->handle, qp->fw_handle, FORCE_FREE);
+
+out_freemem:
+ kfree(qp);
+ return NULL;
+}
+
+u64 ehea_destroy_qp_res(struct ehea_qp *qp, u64 force)
+{
+ u64 hret;
+ struct ehea_qp_init_attr *qp_attr = &qp->init_attr;
+
+
+ ehea_h_disable_and_get_hea(qp->adapter->handle, qp->fw_handle);
+ hret = ehea_h_free_resource(qp->adapter->handle, qp->fw_handle, force);
+ if (hret != H_SUCCESS)
+ return hret;
+
+ hw_queue_dtor(&qp->hw_squeue);
+ hw_queue_dtor(&qp->hw_rqueue1);
+
+ if (qp_attr->rq_count > 1)
+ hw_queue_dtor(&qp->hw_rqueue2);
+ if (qp_attr->rq_count > 2)
+ hw_queue_dtor(&qp->hw_rqueue3);
+ kfree(qp);
+
+ return hret;
+}
+
+int ehea_destroy_qp(struct ehea_qp *qp)
+{
+ u64 hret;
+ if (!qp)
+ return 0;
+
+ hcp_epas_dtor(&qp->epas);
+
+ hret = ehea_destroy_qp_res(qp, NORMAL_FREE);
+ if (hret == H_R_STATE) {
+ ehea_error_data(qp->adapter, qp->fw_handle);
+ hret = ehea_destroy_qp_res(qp, FORCE_FREE);
+ }
+
+ if (hret != H_SUCCESS) {
+ ehea_error("destroy QP failed");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+int ehea_create_busmap(void)
+{
+ u64 vaddr = EHEA_BUSMAP_START;
+ unsigned long high_section_index = 0;
+ int i;
+
+ /*
+ * Sections are not in ascending order -> Loop over all sections and
+ * find the highest PFN to compute the required map size.
+ */
+ ehea_bmap.valid_sections = 0;
+
+ for (i = 0; i < NR_MEM_SECTIONS; i++)
+ if (valid_section_nr(i))
+ high_section_index = i;
+
+ ehea_bmap.entries = high_section_index + 1;
+ ehea_bmap.vaddr = vmalloc(ehea_bmap.entries * sizeof(*ehea_bmap.vaddr));
+
+ if (!ehea_bmap.vaddr)
+ return -ENOMEM;
+
+ for (i = 0 ; i < ehea_bmap.entries; i++) {
+ unsigned long pfn = section_nr_to_pfn(i);
+
+ if (pfn_valid(pfn)) {
+ ehea_bmap.vaddr[i] = vaddr;
+ vaddr += EHEA_SECTSIZE;
+ ehea_bmap.valid_sections++;
+ } else
+ ehea_bmap.vaddr[i] = 0;
+ }
+
+ return 0;
+}
+
+void ehea_destroy_busmap(void)
+{
+ vfree(ehea_bmap.vaddr);
+}
+
+u64 ehea_map_vaddr(void *caddr)
+{
+ u64 mapped_addr;
+ unsigned long index = __pa(caddr) >> SECTION_SIZE_BITS;
+
+ if (likely(index < ehea_bmap.entries)) {
+ mapped_addr = ehea_bmap.vaddr[index];
+ if (likely(mapped_addr))
+ mapped_addr |= (((unsigned long)caddr)
+ & (EHEA_SECTSIZE - 1));
+ else
+ mapped_addr = -1;
+ } else
+ mapped_addr = -1;
+
+ if (unlikely(mapped_addr == -1))
+ if (!test_and_set_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
+ schedule_work(&ehea_rereg_mr_task);
+
+ return mapped_addr;
+}
+
+int ehea_reg_kernel_mr(struct ehea_adapter *adapter, struct ehea_mr *mr)
+{
+ int ret;
+ u64 *pt;
+ void *pg;
+ u64 hret, pt_abs, i, j, m, mr_len;
+ u32 acc_ctrl = EHEA_MR_ACC_CTRL;
+
+ mr_len = ehea_bmap.valid_sections * EHEA_SECTSIZE;
+
+ pt = kzalloc(PAGE_SIZE, GFP_KERNEL);
+ if (!pt) {
+ ehea_error("no mem");
+ ret = -ENOMEM;
+ goto out;
+ }
+ pt_abs = virt_to_abs(pt);
+
+ hret = ehea_h_alloc_resource_mr(adapter->handle,
+ EHEA_BUSMAP_START, mr_len,
+ acc_ctrl, adapter->pd,
+ &mr->handle, &mr->lkey);
+ if (hret != H_SUCCESS) {
+ ehea_error("alloc_resource_mr failed");
+ ret = -EIO;
+ goto out;
+ }
+
+ for (i = 0 ; i < ehea_bmap.entries; i++)
+ if (ehea_bmap.vaddr[i]) {
+ void *sectbase = __va(i << SECTION_SIZE_BITS);
+ unsigned long k = 0;
+
+ for (j = 0; j < (EHEA_PAGES_PER_SECTION /
+ EHEA_MAX_RPAGE); j++) {
+
+ for (m = 0; m < EHEA_MAX_RPAGE; m++) {
+ pg = sectbase + ((k++) * EHEA_PAGESIZE);
+ pt[m] = virt_to_abs(pg);
+ }
+
+ hret = ehea_h_register_rpage_mr(adapter->handle,
+ mr->handle,
+ 0, 0, pt_abs,
+ EHEA_MAX_RPAGE);
+ if ((hret != H_SUCCESS)
+ && (hret != H_PAGE_REGISTERED)) {
+ ehea_h_free_resource(adapter->handle,
+ mr->handle,
+ FORCE_FREE);
+ ehea_error("register_rpage_mr failed");
+ ret = -EIO;
+ goto out;
+ }
+ }
+ }
+
+ if (hret != H_SUCCESS) {
+ ehea_h_free_resource(adapter->handle, mr->handle, FORCE_FREE);
+ ehea_error("registering mr failed");
+ ret = -EIO;
+ goto out;
+ }
+
+ mr->vaddr = EHEA_BUSMAP_START;
+ mr->adapter = adapter;
+ ret = 0;
+out:
+ kfree(pt);
+ return ret;
+}
+
+int ehea_rem_mr(struct ehea_mr *mr)
+{
+ u64 hret;
+
+ if (!mr || !mr->adapter)
+ return -EINVAL;
+
+ hret = ehea_h_free_resource(mr->adapter->handle, mr->handle,
+ FORCE_FREE);
+ if (hret != H_SUCCESS) {
+ ehea_error("destroy MR failed");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+int ehea_gen_smr(struct ehea_adapter *adapter, struct ehea_mr *old_mr,
+ struct ehea_mr *shared_mr)
+{
+ u64 hret;
+
+ hret = ehea_h_register_smr(adapter->handle, old_mr->handle,
+ old_mr->vaddr, EHEA_MR_ACC_CTRL,
+ adapter->pd, shared_mr);
+ if (hret != H_SUCCESS)
+ return -EIO;
+
+ shared_mr->adapter = adapter;
+
+ return 0;
+}
+
+void print_error_data(u64 *data)
+{
+ int length;
+ u64 type = EHEA_BMASK_GET(ERROR_DATA_TYPE, data[2]);
+ u64 resource = data[1];
+
+ length = EHEA_BMASK_GET(ERROR_DATA_LENGTH, data[0]);
+
+ if (length > EHEA_PAGESIZE)
+ length = EHEA_PAGESIZE;
+
+ if (type == 0x8) /* Queue Pair */
+ ehea_error("QP (resource=%lX) state: AER=0x%lX, AERR=0x%lX, "
+ "port=%lX", resource, data[6], data[12], data[22]);
+
+ if (type == 0x4) /* Completion Queue */
+ ehea_error("CQ (resource=%lX) state: AER=0x%lX", resource,
+ data[6]);
+
+ if (type == 0x3) /* Event Queue */
+ ehea_error("EQ (resource=%lX) state: AER=0x%lX", resource,
+ data[6]);
+
+ ehea_dump(data, length, "error data");
+}
+
+void ehea_error_data(struct ehea_adapter *adapter, u64 res_handle)
+{
+ unsigned long ret;
+ u64 *rblock;
+
+ rblock = kzalloc(PAGE_SIZE, GFP_KERNEL);
+ if (!rblock) {
+ ehea_error("Cannot allocate rblock memory.");
+ return;
+ }
+
+ ret = ehea_h_error_data(adapter->handle,
+ res_handle,
+ rblock);
+
+ if (ret == H_R_STATE)
+ ehea_error("No error data is available: %lX.", res_handle);
+ else if (ret == H_SUCCESS)
+ print_error_data(rblock);
+ else
+ ehea_error("Error data could not be fetched: %lX", res_handle);
+
+ kfree(rblock);
+}