Signed-off-by: Heiko J Schick <[EMAIL PROTECTED]>
--- linux-2.6.16-rc4-orig/drivers/infiniband/hw/ehca/ehca_eq.c 1970-01-01
01:00:00.000000000 +0100
+++ linux-2.6.16-rc4/drivers/infiniband/hw/ehca/ehca_eq.c 2006-02-28
14:00:16.000000000 +0100
@@ -0,0 +1,229 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * Event queue handling
+ *
+ * Authors: Waleri Fomin <[EMAIL PROTECTED]>
+ * Reinhard Ernst <[EMAIL PROTECTED]>
+ * Heiko J Schick <[EMAIL PROTECTED]>
+ * Hoang-Nam Nguyen <[EMAIL PROTECTED]>
+ *
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $Id: ehca_eq.c,v 1.8 2006/02/28 13:00:16 schickhj Exp $
+ */
+
+#define DEB_PREFIX "e_eq"
+
+#include "ehca_classes.h"
+#include "ehca_irq.h"
+#include "ehca_iverbs.h"
+#include "ehca_kernel.h"
+#include "ehca_qes.h"
+#include "hcp_if.h"
+#include "ipz_pt_fn.h"
+
+/* TODO: should be defined in ehca_classes_pSeries.h */
+#define HIPZ_EQ_REGISTER_ORIG 0
+
+int ehca_create_eq(struct ehca_shca *shca,
+ struct ehca_eq *eq,
+ const enum ehca_eq_type type, const u32 length)
+{
+ extern struct workqueue_struct *ehca_wq;
+ u64 ret = H_Success;
+ u32 nr_pages = 0;
+ u32 i;
+ void *vpage = NULL;
+
+ EDEB_EN(7, "shca=%p eq=%p length=%x", shca, eq, length);
+ EHCA_CHECK_ADR(shca);
+ EHCA_CHECK_ADR(eq);
+
+ spin_lock_init(&eq->spinlock);
+ eq->is_initialized = 0;
+
+ if (type!=EHCA_EQ && type!=EHCA_NEQ) {
+ EDEB_ERR(4, "Invalid EQ type %x. eq=%p", type, eq);
+ return -EINVAL;
+ }
+ if (length==0) {
+ EDEB_ERR(4, "EQ length must not be zero. eq=%p", eq);
+ return -EINVAL;
+ }
+
+ ret = hipz_h_alloc_resource_eq(shca->ipz_hca_handle,
+ &eq->pf,
+ type,
+ length,
+ &eq->ipz_eq_handle,
+ &eq->length,
+ &nr_pages, &eq->irq_info.ist);
+
+ if (ret != H_Success) {
+ EDEB_ERR(4, "Can't allocate EQ / NEQ. eq=%p", eq);
+ return -EINVAL;
+ }
+
+ ret = ipz_queue_ctor(&eq->ipz_queue, nr_pages,
+ EHCA_PAGESIZE, sizeof(struct ehca_eqe), 0);
+ if (!ret) {
+ EDEB_ERR(4, "Can't allocate EQ pages. eq=%p", eq);
+ goto create_eq_exit1;
+ }
+
+ for (i = 0; i < nr_pages; i++) {
+ u64 rpage;
+
+ if (!(vpage = ipz_qpageit_get_inc(&eq->ipz_queue))) {
+ ret = H_Resource;
+ goto create_eq_exit2;
+ }
+
+ rpage = ehca_kv_to_g(vpage);
+ ret = hipz_h_register_rpage_eq(shca->ipz_hca_handle,
+ eq->ipz_eq_handle,
+ &eq->pf,
+ 0,
+ HIPZ_EQ_REGISTER_ORIG, rpage, 1);
+
+ if (i == (nr_pages - 1)) {
+ /* last page */
+ vpage = ipz_qpageit_get_inc(&eq->ipz_queue);
+ if ((ret != H_Success) || (vpage != 0)) {
+ goto create_eq_exit2;
+ }
+ } else {
+ if ((ret != H_PAGE_REGISTERED) || (vpage == 0)) {
+ goto create_eq_exit2;
+ }
+ }
+ }
+
+ ipz_qeit_reset(&eq->ipz_queue);
+
+ (eq->irq_info).eq = eq;
+ (eq->irq_info).wq = ehca_wq;
+ (eq->irq_info).work = &(eq->work);
+
+ /* register interrupt handlers and initialize work queues */
+ if (type == EHCA_EQ) {
+ INIT_WORK(&(eq->work),
+ ehca_interrupt_eq, (void *)&(eq->irq_info));
+ eq->is_initialized = 1;
+ hipz_request_interrupt(&(eq->irq_info), ehca_interrupt);
+ } else if (type == EHCA_NEQ) {
+ INIT_WORK(&(eq->work),
+ ehca_interrupt_neq, (void *)&(eq->irq_info));
+ hipz_request_interrupt(&(eq->irq_info), ehca_interrupt);
+ }
+
+ EDEB_EX(7, "ret=%lx", ret);
+
+ return 0;
+
+ create_eq_exit2:
+ ipz_queue_dtor(&eq->ipz_queue);
+
+ create_eq_exit1:
+ hipz_h_destroy_eq(shca->ipz_hca_handle, eq);
+
+ EDEB_EX(7, "ret=%lx", ret);
+
+ return -EINVAL;
+}
+
+void *ehca_poll_eq(struct ehca_shca *shca, struct ehca_eq *eq)
+{
+ unsigned long flags = 0;
+ void *eqe = NULL;
+
+ EDEB_EN(7, "shca=%p eq=%p", shca, eq);
+ EHCA_CHECK_ADR_P(shca);
+ EHCA_CHECK_EQ_P(eq);
+
+ spin_lock_irqsave(&eq->spinlock, flags);
+ eqe = ipz_eqit_eq_get_inc_valid(&eq->ipz_queue);
+ spin_unlock_irqrestore(&eq->spinlock, flags);
+
+ EDEB_EX(7, "eq=%p eqe=%p", eq, eqe);
+
+ return eqe;
+}
+
+void ehca_poll_eqs(unsigned long data)
+{
+ extern struct workqueue_struct *ehca_wq;
+ struct ehca_shca *shca;
+ struct ehca_module* module = (struct ehca_module*)data;
+
+ spin_lock(&module->shca_lock);
+ list_for_each_entry(shca, &module->shca_list, shca_list) {
+ if (shca->eq.is_initialized)
+ queue_work(ehca_wq, &shca->eq.work);
+ }
+ module->timer.expires = jiffies + HZ;
+ add_timer(&module->timer);
+ spin_unlock(&module->shca_lock);
+
+ return;
+}
+
+int ehca_destroy_eq(struct ehca_shca *shca, struct ehca_eq *eq)
+{
+ unsigned long flags = 0;
+ u64 retcode = H_Success;
+
+ EDEB_EN(7, "shca=%p eq=%p", shca, eq);
+ EHCA_CHECK_ADR(shca);
+ EHCA_CHECK_EQ(eq);
+
+ spin_lock_irqsave(&eq->spinlock, flags);
+ hipz_free_interrupt(&(eq->irq_info));
+
+ retcode = hipz_h_destroy_eq(shca->ipz_hca_handle, eq);
+
+ spin_unlock_irqrestore(&eq->spinlock, flags);
+
+ if (retcode != H_Success) {
+ EDEB_ERR(4, "Can't free EQ resources.");
+ return -EINVAL;
+ }
+ ipz_queue_dtor(&eq->ipz_queue);
+
+ EDEB_EX(7, "retcode=%lx", retcode);
+
+ return 0;
+}
+
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