Add support for allocating user access regions (UARs). Use this to
allocate a region for kernel at driver init instead using hard-coded
MTHCA_KAR_PAGE index.
Signed-off-by: Roland Dreier <[EMAIL PROTECTED]>
Index: src/linux-kernel/infiniband/hw/mthca/Makefile
===================================================================
--- src.orig/linux-kernel/infiniband/hw/mthca/Makefile 2005-02-23
11:16:38.000000000 -0800
+++ src/linux-kernel/infiniband/hw/mthca/Makefile 2005-02-23
11:16:42.000000000 -0800
@@ -9,4 +9,4 @@
ib_mthca-y := mthca_main.o mthca_cmd.o mthca_profile.o mthca_reset.o \
mthca_allocator.o mthca_eq.o mthca_pd.o mthca_cq.o \
mthca_mr.o mthca_qp.o mthca_av.o mthca_mcg.o mthca_mad.o \
- mthca_provider.o mthca_memfree.o
+ mthca_provider.o mthca_memfree.o mthca_uar.o
Index: src/linux-kernel/infiniband/hw/mthca/mthca_cq.c
===================================================================
--- src.orig/linux-kernel/infiniband/hw/mthca/mthca_cq.c 2005-02-23
11:16:38.000000000 -0800
+++ src/linux-kernel/infiniband/hw/mthca/mthca_cq.c 2005-02-23
11:16:43.000000000 -0800
@@ -666,7 +666,7 @@
MTHCA_CQ_FLAG_TR);
cq_context->start = cpu_to_be64(0);
cq_context->logsize_usrpage = cpu_to_be32((ffs(nent) - 1) << 24 |
- MTHCA_KAR_PAGE);
+ dev->driver_uar.index);
cq_context->error_eqn =
cpu_to_be32(dev->eq_table.eq[MTHCA_EQ_ASYNC].eqn);
cq_context->comp_eqn =
cpu_to_be32(dev->eq_table.eq[MTHCA_EQ_COMP].eqn);
cq_context->pd = cpu_to_be32(dev->driver_pd.pd_num);
Index: src/linux-kernel/infiniband/hw/mthca/mthca_dev.h
===================================================================
--- src.orig/linux-kernel/infiniband/hw/mthca/mthca_dev.h 2005-02-23
11:16:41.000000000 -0800
+++ src/linux-kernel/infiniband/hw/mthca/mthca_dev.h 2005-02-23
11:16:47.000000000 -0800
@@ -65,7 +65,6 @@
};
enum {
- MTHCA_KAR_PAGE = 1,
MTHCA_MAX_PORTS = 2
};
@@ -108,6 +107,7 @@
int gid_table_len;
int pkey_table_len;
int local_ca_ack_delay;
+ int num_uars;
int max_sg;
int num_qps;
int reserved_qps;
@@ -148,6 +148,12 @@
} *page_list;
};
+struct mthca_uar_table {
+ struct mthca_alloc alloc;
+ u64 uarc_base;
+ int uarc_size;
+};
+
struct mthca_pd_table {
struct mthca_alloc alloc;
};
@@ -252,6 +258,7 @@
struct mthca_cmd cmd;
struct mthca_limits limits;
+ struct mthca_uar_table uar_table;
struct mthca_pd_table pd_table;
struct mthca_mr_table mr_table;
struct mthca_eq_table eq_table;
@@ -260,6 +267,7 @@
struct mthca_av_table av_table;
struct mthca_mcg_table mcg_table;
+ struct mthca_uar driver_uar;
struct mthca_pd driver_pd;
struct mthca_mr driver_mr;
@@ -318,6 +326,7 @@
int mthca_array_init(struct mthca_array *array, int nent);
void mthca_array_cleanup(struct mthca_array *array, int nent);
+int mthca_init_uar_table(struct mthca_dev *dev);
int mthca_init_pd_table(struct mthca_dev *dev);
int mthca_init_mr_table(struct mthca_dev *dev);
int mthca_init_eq_table(struct mthca_dev *dev);
@@ -326,6 +335,7 @@
int mthca_init_av_table(struct mthca_dev *dev);
int mthca_init_mcg_table(struct mthca_dev *dev);
+void mthca_cleanup_uar_table(struct mthca_dev *dev);
void mthca_cleanup_pd_table(struct mthca_dev *dev);
void mthca_cleanup_mr_table(struct mthca_dev *dev);
void mthca_cleanup_eq_table(struct mthca_dev *dev);
@@ -337,6 +347,9 @@
int mthca_register_device(struct mthca_dev *dev);
void mthca_unregister_device(struct mthca_dev *dev);
+int mthca_uar_alloc(struct mthca_dev *dev, struct mthca_uar *uar);
+void mthca_uar_free(struct mthca_dev *dev, struct mthca_uar *uar);
+
int mthca_pd_alloc(struct mthca_dev *dev, struct mthca_pd *pd);
void mthca_pd_free(struct mthca_dev *dev, struct mthca_pd *pd);
Index: src/linux-kernel/infiniband/hw/mthca/mthca_eq.c
===================================================================
--- src.orig/linux-kernel/infiniband/hw/mthca/mthca_eq.c 2005-02-23
11:16:41.000000000 -0800
+++ src/linux-kernel/infiniband/hw/mthca/mthca_eq.c 2005-02-23
11:16:43.000000000 -0800
@@ -469,7 +469,7 @@
MTHCA_EQ_FLAG_TR);
eq_context->start = cpu_to_be64(0);
eq_context->logsize_usrpage = cpu_to_be32((ffs(nent) - 1) << 24 |
- MTHCA_KAR_PAGE);
+ dev->driver_uar.index);
eq_context->pd = cpu_to_be32(dev->driver_pd.pd_num);
eq_context->intr = intr;
eq_context->lkey = cpu_to_be32(eq->mr.ibmr.lkey);
Index: src/linux-kernel/infiniband/hw/mthca/mthca_main.c
===================================================================
--- src.orig/linux-kernel/infiniband/hw/mthca/mthca_main.c 2005-02-23
11:16:41.000000000 -0800
+++ src/linux-kernel/infiniband/hw/mthca/mthca_main.c 2005-02-23
11:16:42.000000000 -0800
@@ -570,13 +570,35 @@
MTHCA_INIT_DOORBELL_LOCK(&dev->doorbell_lock);
- err = mthca_init_pd_table(dev);
+ err = mthca_init_uar_table(dev);
if (err) {
mthca_err(dev, "Failed to initialize "
- "protection domain table, aborting.\n");
+ "user access region table, aborting.\n");
return err;
}
+ err = mthca_uar_alloc(dev, &dev->driver_uar);
+ if (err) {
+ mthca_err(dev, "Failed to allocate driver access region, "
+ "aborting.\n");
+ goto err_uar_table_free;
+ }
+
+ dev->kar = ioremap(dev->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
+ if (!dev->kar) {
+ mthca_err(dev, "Couldn't map kernel access region, "
+ "aborting.\n");
+ err = -ENOMEM;
+ goto err_uar_free;
+ }
+
+ err = mthca_init_pd_table(dev);
+ if (err) {
+ mthca_err(dev, "Failed to initialize "
+ "protection domain table, aborting.\n");
+ goto err_kar_unmap;
+ }
+
err = mthca_init_mr_table(dev);
if (err) {
mthca_err(dev, "Failed to initialize "
@@ -677,7 +699,16 @@
err_pd_table_free:
mthca_cleanup_pd_table(dev);
- return err;
+
+err_kar_unmap:
+ iounmap(dev->kar);
+
+err_uar_free:
+ mthca_uar_free(dev, &dev->driver_uar);
+
+err_uar_table_free:
+ mthca_cleanup_uar_table(dev);
+ return err;
}
static int __devinit mthca_request_regions(struct pci_dev *pdev,
@@ -789,7 +820,6 @@
static int mthca_version_printed = 0;
int ddr_hidden = 0;
int err;
- unsigned long mthca_base;
struct mthca_dev *mdev;
if (!mthca_version_printed) {
@@ -891,8 +921,7 @@
sema_init(&mdev->cmd.poll_sem, 1);
mdev->cmd.use_events = 0;
- mthca_base = pci_resource_start(pdev, 0);
- mdev->hcr = ioremap(mthca_base + MTHCA_HCR_BASE, MTHCA_HCR_SIZE);
+ mdev->hcr = ioremap(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE,
MTHCA_HCR_SIZE);
if (!mdev->hcr) {
mthca_err(mdev, "Couldn't map command register, "
"aborting.\n");
@@ -900,22 +929,13 @@
goto err_free_dev;
}
- mthca_base = pci_resource_start(pdev, 2);
- mdev->kar = ioremap(mthca_base + PAGE_SIZE * MTHCA_KAR_PAGE, PAGE_SIZE);
- if (!mdev->kar) {
- mthca_err(mdev, "Couldn't map kernel access region, "
- "aborting.\n");
- err = -ENOMEM;
- goto err_iounmap;
- }
-
err = mthca_tune_pci(mdev);
if (err)
- goto err_iounmap_kar;
+ goto err_iounmap;
err = mthca_init_hca(mdev);
if (err)
- goto err_iounmap_kar;
+ goto err_iounmap;
err = mthca_setup_hca(mdev);
if (err)
@@ -948,13 +968,11 @@
mthca_cleanup_mr_table(mdev);
mthca_cleanup_pd_table(mdev);
+ mthca_cleanup_uar_table(mdev);
err_close:
mthca_close_hca(mdev);
-err_iounmap_kar:
- iounmap(mdev->kar);
-
err_iounmap:
iounmap(mdev->hcr);
@@ -1000,9 +1018,12 @@
mthca_cleanup_mr_table(mdev);
mthca_cleanup_pd_table(mdev);
+ iounmap(mdev->kar);
+ mthca_uar_free(mdev, &mdev->driver_uar);
+ mthca_cleanup_uar_table(mdev);
+
mthca_close_hca(mdev);
- iounmap(mdev->kar);
iounmap(mdev->hcr);
if (mdev->mthca_flags & MTHCA_FLAG_MSI_X)
Index: src/linux-kernel/infiniband/hw/mthca/mthca_profile.c
===================================================================
--- src.orig/linux-kernel/infiniband/hw/mthca/mthca_profile.c 2005-02-23
11:16:38.000000000 -0800
+++ src/linux-kernel/infiniband/hw/mthca/mthca_profile.c 2005-02-23
11:16:43.000000000 -0800
@@ -236,6 +236,7 @@
init_hca->mtt_seg_sz = ffs(dev_lim->mtt_seg_sz) - 7;
break;
case MTHCA_RES_UAR:
+ dev->limits.num_uars = profile[i].num;
init_hca->uar_scratch_base = profile[i].start;
break;
case MTHCA_RES_UDAV:
Index: src/linux-kernel/infiniband/hw/mthca/mthca_provider.h
===================================================================
--- src.orig/linux-kernel/infiniband/hw/mthca/mthca_provider.h 2005-02-23
11:16:38.000000000 -0800
+++ src/linux-kernel/infiniband/hw/mthca/mthca_provider.h 2005-02-23
11:16:42.000000000 -0800
@@ -49,6 +49,11 @@
DECLARE_PCI_UNMAP_ADDR(mapping)
};
+struct mthca_uar {
+ unsigned long pfn;
+ int index;
+};
+
struct mthca_mr {
struct ib_mr ibmr;
int order;
Index: src/linux-kernel/infiniband/hw/mthca/mthca_qp.c
===================================================================
--- src.orig/linux-kernel/infiniband/hw/mthca/mthca_qp.c 2005-02-23
11:16:38.000000000 -0800
+++ src/linux-kernel/infiniband/hw/mthca/mthca_qp.c 2005-02-23
11:16:43.000000000 -0800
@@ -625,7 +625,7 @@
qp_context->mtu_msgmax = cpu_to_be32((attr->path_mtu << 29) |
(31 << 24));
}
- qp_context->usr_page = cpu_to_be32(MTHCA_KAR_PAGE);
+ qp_context->usr_page = cpu_to_be32(dev->driver_uar.index);
qp_context->local_qpn = cpu_to_be32(qp->qpn);
if (attr_mask & IB_QP_DEST_QPN) {
qp_context->remote_qpn = cpu_to_be32(attr->dest_qp_num);
Index: src/linux-kernel/infiniband/hw/mthca/mthca_uar.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ src/linux-kernel/infiniband/hw/mthca/mthca_uar.c 2005-02-23
11:16:43.000000000 -0800
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2005 Topspin Communications. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * 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.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * $Id$
+ */
+
+#include "mthca_dev.h"
+
+int mthca_uar_alloc(struct mthca_dev *dev, struct mthca_uar *uar)
+{
+ uar->index = mthca_alloc(&dev->uar_table.alloc);
+ if (uar->index == -1)
+ return -ENOMEM;
+
+ uar->pfn = (pci_resource_start(dev->pdev, 2) >> PAGE_SHIFT) +
uar->index;
+
+ return 0;
+}
+
+void mthca_uar_free(struct mthca_dev *dev, struct mthca_uar *uar)
+{
+ mthca_free(&dev->uar_table.alloc, uar->index);
+}
+
+int mthca_init_uar_table(struct mthca_dev *dev)
+{
+ int ret;
+
+ ret = mthca_alloc_init(&dev->uar_table.alloc,
+ dev->limits.num_uars,
+ dev->limits.num_uars - 1,
+ dev->limits.reserved_uars);
+
+ return ret;
+}
+
+void mthca_cleanup_uar_table(struct mthca_dev *dev)
+{
+ /* XXX check if any UARs are still allocated? */
+ mthca_alloc_cleanup(&dev->uar_table.alloc);
+}
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