Signed-off-by: Heiko J Schick <[EMAIL PROTECTED]>
ipz_pt_fn.c | 137 +++++++++++++++++++++++++++++++++++++++++++++
ipz_pt_fn.h | 164 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
ipz_pt_fn_core.h | 147 +++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 448 insertions(+)
--- linux-2.6.16-rc4-orig/drivers/infiniband/hw/ehca/ipz_pt_fn.h
1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.16-rc4/drivers/infiniband/hw/ehca/ipz_pt_fn.h 2006-02-27
18:00:33.000000000 +0100
@@ -0,0 +1,164 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * internal queue handling
+ *
+ * Authors: Waleri Fomin <[EMAIL PROTECTED]>
+ * Reinhard Ernst <[EMAIL PROTECTED]>
+ * Christoph Raisch <[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: ipz_pt_fn.h,v 1.3 2006/02/27 17:00:33 nguyen Exp $
+ */
+
+#ifndef __IPZ_PT_FN_H__
+#define __IPZ_PT_FN_H__
+
+#include "ipz_pt_fn_core.h"
+#include "ehca_qes.h"
+
+#define EHCA_PAGESIZE 4096UL
+#define EHCA_PT_ENTRIES 512UL
+
+/** @brief generic page table
+ */
+struct ipz_pt {
+ u64 entries[EHCA_PT_ENTRIES];
+};
+
+/** @brief generic page
+ */
+struct ipz_page {
+ u8 entries[EHCA_PAGESIZE];
+};
+
+/** @brief page table for a queue, only to be used in pf
+ */
+struct ipz_qpt {
+ /* queue page tables (kv), use u64 because we know the element length */
+ u64 *qpts;
+ u32 allocated_qpts_entries;
+ u32 nr_of_PTEs; /* number of page table entries PTE iterators */
+ u64 *current_pte_addr;
+};
+
+/** @brief constructor for a ipz_queue_t, placement new for ipz_queue_t,
+ new for all dependent datastructors
+
+ all QP Tables are the same
+ flow:
+ -# allocate+pin queue
+ @see ipz_qpt_ctor()
+ @returns true if ok, false if out of memory
+ */
+int ipz_queue_ctor(struct ipz_queue *queue, const u32 nr_of_pages,
+ const u32 pagesize,
+ const u32 qe_size, /* queue entry size*/
+ const u32 nr_of_sg);
+
+/** @brief destructor for a ipz_queue_t
+ -# free queue
+ @see ipz_queue_ctor()
+ @returns true if ok, false if queue was NULL-ptr of free failed
+*/
+int ipz_queue_dtor(struct ipz_queue *queue);
+
+/** @brief constructor for a ipz_qpt_t,
+ * placement new for struct ipz_queue, new for all dependent datastructors
+ *
+ * all QP Tables are the same,
+ * flow:
+ * -# allocate+pin queue
+ * -# initialise ptcb
+ * -# allocate+pin PTs
+ * -# link PTs to a ring, according to HCA Arch, set bit62 id needed
+ * -# the ring must have room for exactly nr_of_PTEs
+ * @see ipz_qpt_ctor()
+ */
+void ipz_qpt_ctor(struct ipz_qpt *qpt,
+ const u32 nr_of_QEs,
+ const u32 pagesize,
+ const u32 qe_size,
+ const u8 lowbyte, const u8 toggle,
+ u32 * act_nr_of_QEs,
+ u32 * act_nr_of_pages);
+
+/** @brief return current Queue Entry, increment Queue Entry iterator by one
+ step in struct ipz_queue, will wrap in ringbuffer
+ @returns address (kv) of Queue Entry BEFORE increment
+ @warning don't use in parallel with ipz_qpageit_get_inc()
+ @warning unpredictable results may occur if steps>act_nr_of_queue_entries
+
+ fix EQ page problems
+ */
+void *ipz_qeit_eq_get_inc(struct ipz_queue *queue);
+
+/** @brief return current Event Queue Entry, increment Queue Entry iterator
+ by one step in struct ipz_queue if valid, will wrap in ringbuffer
+ @returns address (kv) of Queue Entry BEFORE increment
+ @returns 0 and does not increment, if wrong valid state
+ @warning don't use in parallel with ipz_queue_QPageit_get_inc()
+ @warning unpredictable results may occur if steps>act_nr_of_queue_entries
+ */
+inline static void *ipz_eqit_eq_get_inc_valid(struct ipz_queue *queue)
+{
+ void *retvalue = ipz_qeit_get(queue);
+ u32 qe = *(u8 *) retvalue;
+ EDEB(7, "ipz_QEit_EQ_get_inc_valid qe=%x", qe);
+ if ((qe >> 7) == (queue->toggle_state & 1)) {
+ /* this is a good one */
+ ipz_qeit_eq_get_inc(queue);
+ } else {
+ retvalue = NULL;
+ }
+ return (retvalue);
+}
+
+/**
+ @returns address (GX) of first queue entry
+ */
+inline static u64 ipz_qpt_get_firstpage(struct ipz_qpt *qpt)
+{
+ return (be64_to_cpu(qpt->qpts[0]));
+}
+
+/**
+ @returns address (kv) of first page of queue page table
+ */
+inline static void *ipz_qpt_get_qpt(struct ipz_qpt *qpt)
+{
+ return (qpt->qpts);
+}
+
+#endif /* __IPZ_PT_FN_H__ */
--- linux-2.6.16-rc4-orig/drivers/infiniband/hw/ehca/ipz_pt_fn_core.h
1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.16-rc4/drivers/infiniband/hw/ehca/ipz_pt_fn_core.h
2006-02-27 18:00:33.000000000 +0100
@@ -0,0 +1,147 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * internal queue handling
+ *
+ * Authors: Waleri Fomin <[EMAIL PROTECTED]>
+ * Reinhard Ernst <[EMAIL PROTECTED]>
+ * Christoph Raisch <[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: ipz_pt_fn_core.h,v 1.3 2006/02/27 17:00:33 nguyen Exp $
+ */
+
+#ifndef __IPZ_PT_FN_CORE_H__
+#define __IPZ_PT_FN_CORE_H__
+
+#include "ehca_tools.h"
+#include "ehca_qes.h"
+
+/** @brief generic queue in linux kernel virtual memory (kv)
+ */
+struct ipz_queue {
+#ifndef __PPC64__
+ void * dummy1; /* make sure we use the same thing on 32
bit */
+#endif
+ u8 *current_q_addr; /* current queue entry */
+#ifndef __PPC64__
+ void * dummy2;
+#endif
+ u8 *queue; /* points to first queue entry */
+ u32 qe_size; /* queue entry size */
+ u32 act_nr_of_sg;
+ u32 queue_length; /* queue length allocated in bytes */
+ u32 pagesize;
+ u32 toggle_state; /* toggle flag - per page */
+ u32 dummy3; /* 64 bit alignment*/
+};
+
+/** @brief return current Queue Entry
+ @returns address (kv) of Queue Entry
+ */
+static inline void *ipz_qeit_get(struct ipz_queue *queue)
+{
+ return (queue->current_q_addr);
+}
+
+/** @brief return current Queue Page , increment Queue Page iterator from
+ page to page in struct ipz_queue, last increment will return 0! and
+ NOT wrap
+ @returns address (kv) of Queue Page
+ @warning don't use in parallel with ipz_QE_get_inc()
+ */
+void *ipz_qpageit_get_inc(struct ipz_queue *queue);
+
+/** @brief return current Queue Entry, increment Queue Entry iterator by one
+ step in struct ipz_queue, will wrap in ringbuffer
+ @returns address (kv) of Queue Entry BEFORE increment
+ @warning don't use in parallel with ipz_qpageit_get_inc()
+ @warning unpredictable results may occur if steps>act_nr_of_queue_entries
+ */
+static inline void *ipz_qeit_get_inc(struct ipz_queue *queue)
+{
+ void *retvalue = 0;
+ u8 *last_entry_in_q = queue->queue + queue->queue_length
+ - queue->qe_size;
+
+ retvalue = queue->current_q_addr;
+ queue->current_q_addr += queue->qe_size;
+ if (queue->current_q_addr > last_entry_in_q) {
+ queue->current_q_addr = queue->queue;
+ /* toggle the valid flag */
+ queue->toggle_state = (~queue->toggle_state) & 1;
+ }
+
+ EDEB(7, "queue=%p retvalue=%p new current_q_addr=%p qe_size=%x",
+ queue, retvalue, queue->current_q_addr, queue->qe_size);
+
+ return (retvalue);
+}
+
+/** @brief return current Queue Entry, increment Queue Entry iterator by one
+ step in struct ipz_queue, will wrap in ringbuffer
+ @returns address (kv) of Queue Entry BEFORE increment
+ @returns 0 and does not increment, if wrong valid state
+ @warning don't use in parallel with ipz_qpageit_get_inc()
+ @warning unpredictable results may occur if steps>act_nr_of_queue_entries
+ */
+inline static void *ipz_qeit_get_inc_valid(struct ipz_queue *queue)
+{
+ void *retvalue = ipz_qeit_get(queue);
+#ifdef USERSPACE_DRIVER
+
+ u32 qe =
+ ((struct ehca_cqe *)(ehca_ktou((struct ehca_cqe *)retvalue)))->
+ cqe_flags;
+#else
+ u32 qe = ((struct ehca_cqe *)retvalue)->cqe_flags;
+#endif
+ if ((qe >> 7) == (queue->toggle_state & 1)) {
+ /* this is a good one */
+ ipz_qeit_get_inc(queue);
+ } else
+ retvalue = 0;
+ return (retvalue);
+}
+
+/** @brief returns and resets Queue Entry iterator
+ @returns address (kv) of first Queue Entry
+ */
+static inline void *ipz_qeit_reset(struct ipz_queue *queue)
+{
+ queue->current_q_addr = queue->queue;
+ return (queue->queue);
+}
+
+#endif /* __IPZ_PT_FN_CORE_H__ */
--- linux-2.6.16-rc4-orig/drivers/infiniband/hw/ehca/ipz_pt_fn.c
1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.16-rc4/drivers/infiniband/hw/ehca/ipz_pt_fn.c 2006-02-27
18:00:33.000000000 +0100
@@ -0,0 +1,137 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * internal queue handling
+ *
+ * Authors: Waleri Fomin <[EMAIL PROTECTED]>
+ * Reinhard Ernst <[EMAIL PROTECTED]>
+ * Christoph Raisch <[EMAIL PROTECTED]>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * 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: ipz_pt_fn.c,v 1.3 2006/02/27 17:00:33 nguyen Exp $
+ */
+
+#define DEB_PREFIX "iptz"
+
+#include "ehca_kernel.h"
+#include "ehca_tools.h"
+#include "ipz_pt_fn.h"
+
+extern int ehca_hwlevel;
+
+void *ipz_qpageit_get_inc(struct ipz_queue *queue)
+{
+ void *retvalue = NULL;
+ u8 *EOF_last_page = queue->queue + queue->queue_length;
+
+ retvalue = queue->current_q_addr;
+ queue->current_q_addr += queue->pagesize;
+ if (queue->current_q_addr > EOF_last_page) {
+ queue->current_q_addr -= queue->pagesize;
+ retvalue = NULL;
+ }
+
+ if ((((u64)retvalue) % EHCA_PAGESIZE) != 0) {
+ EDEB(4, "ERROR!! not at PAGE-Boundary");
+ return (NULL);
+ }
+ EDEB(7, "queue=%p retvalue=%p", queue, retvalue);
+ return (retvalue);
+}
+
+void *ipz_qeit_eq_get_inc(struct ipz_queue *queue)
+{
+ void *retvalue = NULL;
+ u8 *last_entry_in_q = queue->queue + queue->queue_length
+ - queue->qe_size;
+
+ retvalue = queue->current_q_addr;
+ queue->current_q_addr += queue->qe_size;
+ if (queue->current_q_addr > last_entry_in_q) {
+ queue->current_q_addr = queue->queue;
+ queue->toggle_state = (~queue->toggle_state) & 1;
+ }
+
+ EDEB(7, "queue=%p retvalue=%p new current_q_addr=%p qe_size=%x",
+ queue, retvalue, queue->current_q_addr, queue->qe_size);
+
+ return (retvalue);
+}
+
+int ipz_queue_ctor(struct ipz_queue *queue,
+ const u32 nr_of_pages,
+ const u32 pagesize, const u32 qe_size, const u32 nr_of_sg)
+{
+ EDEB_EN(7, "nr_of_pages=%x pagesize=%x qe_size=%x",
+ nr_of_pages, pagesize, qe_size);
+ queue->queue_length = nr_of_pages * pagesize;
+ queue->queue = vmalloc(queue->queue_length);
+ if (queue->queue == 0) {
+ EDEB(4, "ERROR!! didn't get the memory");
+ return 0;
+ }
+ if ((((u64)queue->queue) & (EHCA_PAGESIZE - 1)) != 0) {
+ EDEB(4, "ERROR!! QUEUE doesn't start at "
+ "page boundary");
+ vfree(queue->queue);
+ return 0;
+ }
+
+ memset(queue->queue, 0, queue->queue_length);
+ queue->current_q_addr = queue->queue;
+ queue->qe_size = qe_size;
+ queue->act_nr_of_sg = nr_of_sg;
+ queue->pagesize = pagesize;
+ queue->toggle_state = 1;
+ EDEB_EX(7, "queue_length=%x queue=%p qe_size=%x"
+ " act_nr_of_sg=%x", queue->queue_length, queue->queue,
+ queue->qe_size, queue->act_nr_of_sg);
+ return 1;
+}
+
+int ipz_queue_dtor(struct ipz_queue *queue)
+{
+ EDEB_EN(7, "ipz_queue pointer=%p", queue);
+ if (queue == NULL) {
+ return 0;
+ }
+ if (queue->queue == NULL) {
+ return 0;
+ }
+ EDEB(7, "destructing a queue with the following "
+ "properties:\n nr_of_pages=%x pagesize=%x qe_size=%x",
+ queue->act_nr_of_sg, queue->pagesize, queue->qe_size);
+ vfree(queue->queue);
+
+ EDEB_EX(7, "queue freed!");
+ return 1;
+}
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