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authorYuval Shaia <yuval.shaia@oracle.com>2018-02-09 15:15:00 +0200
committerMarcel Apfelbaum <marcel@redhat.com>2018-02-19 13:03:24 +0200
commitdcbf469aeffb3b307d2bc5331797d67979b715e3 (patch)
tree67235c5fed5ee03ccb8b717d6c5c0ba4b12cdc6b
parent7605e12a512ad87b764cda6554724e7f84ded18d (diff)
downloadqemu-arm-dcbf469aeffb3b307d2bc5331797d67979b715e3.tar.gz
hw/rdma: Add wrappers and macros
As all mapping for this device are from driver to device, declare wrappers on top of pci_dma_*map functions. In addition, declare macros to be used for debug messages. Reviewed-by: Dotan Barak <dotanb@mellanox.com> Reviewed-by: Zhu Yanjun <yanjun.zhu@oracle.com> Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com> Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
-rw-r--r--hw/Makefile.objs1
-rw-r--r--hw/rdma/Makefile.objs3
-rw-r--r--hw/rdma/rdma_utils.c51
-rw-r--r--hw/rdma/rdma_utils.h43
4 files changed, 98 insertions, 0 deletions
diff --git a/hw/Makefile.objs b/hw/Makefile.objs
index cf4cb2010b..6a0ffe0afd 100644
--- a/hw/Makefile.objs
+++ b/hw/Makefile.objs
@@ -18,6 +18,7 @@ devices-dirs-$(CONFIG_IPMI) += ipmi/
devices-dirs-$(CONFIG_SOFTMMU) += isa/
devices-dirs-$(CONFIG_SOFTMMU) += misc/
devices-dirs-$(CONFIG_SOFTMMU) += net/
+devices-dirs-$(CONFIG_SOFTMMU) += rdma/
devices-dirs-$(CONFIG_SOFTMMU) += nvram/
devices-dirs-$(CONFIG_SOFTMMU) += pci/
devices-dirs-$(CONFIG_PCI) += pci-bridge/ pci-host/
diff --git a/hw/rdma/Makefile.objs b/hw/rdma/Makefile.objs
new file mode 100644
index 0000000000..cdffe4a9a3
--- /dev/null
+++ b/hw/rdma/Makefile.objs
@@ -0,0 +1,3 @@
+ifeq ($(CONFIG_RDMA),y)
+obj-$(CONFIG_PCI) += rdma_utils.o
+endif
diff --git a/hw/rdma/rdma_utils.c b/hw/rdma/rdma_utils.c
new file mode 100644
index 0000000000..0e5caffd40
--- /dev/null
+++ b/hw/rdma/rdma_utils.c
@@ -0,0 +1,51 @@
+/*
+ * QEMU paravirtual RDMA - Generic RDMA backend
+ *
+ * Copyright (C) 2018 Oracle
+ * Copyright (C) 2018 Red Hat Inc
+ *
+ * Authors:
+ * Yuval Shaia <yuval.shaia@oracle.com>
+ * Marcel Apfelbaum <marcel@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#include "rdma_utils.h"
+
+void *rdma_pci_dma_map(PCIDevice *dev, dma_addr_t addr, dma_addr_t plen)
+{
+ void *p;
+ hwaddr len = plen;
+
+ if (!addr) {
+ pr_dbg("addr is NULL\n");
+ return NULL;
+ }
+
+ p = pci_dma_map(dev, addr, &len, DMA_DIRECTION_TO_DEVICE);
+ if (!p) {
+ pr_dbg("Fail in pci_dma_map, addr=0x%llx, len=%ld\n",
+ (long long unsigned int)addr, len);
+ return NULL;
+ }
+
+ if (len != plen) {
+ rdma_pci_dma_unmap(dev, p, len);
+ return NULL;
+ }
+
+ pr_dbg("0x%llx -> %p (len=%ld)\n", (long long unsigned int)addr, p, len);
+
+ return p;
+}
+
+void rdma_pci_dma_unmap(PCIDevice *dev, void *buffer, dma_addr_t len)
+{
+ pr_dbg("%p\n", buffer);
+ if (buffer) {
+ pci_dma_unmap(dev, buffer, len, DMA_DIRECTION_TO_DEVICE, 0);
+ }
+}
diff --git a/hw/rdma/rdma_utils.h b/hw/rdma/rdma_utils.h
new file mode 100644
index 0000000000..cdac910e24
--- /dev/null
+++ b/hw/rdma/rdma_utils.h
@@ -0,0 +1,43 @@
+/*
+ * RDMA device: Debug utilities
+ *
+ * Copyright (C) 2018 Oracle
+ * Copyright (C) 2018 Red Hat Inc
+ *
+ *
+ * Authors:
+ * Yuval Shaia <yuval.shaia@oracle.com>
+ * Marcel Apfelbaum <marcel@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef RDMA_UTILS_H
+#define RDMA_UTILS_H
+
+#include <qemu/osdep.h>
+#include <include/hw/pci/pci.h>
+#include <include/sysemu/dma.h>
+
+#define pr_info(fmt, ...) \
+ fprintf(stdout, "%s: %-20s (%3d): " fmt, "pvrdma", __func__, __LINE__,\
+ ## __VA_ARGS__)
+
+#define pr_err(fmt, ...) \
+ fprintf(stderr, "%s: Error at %-20s (%3d): " fmt, "pvrdma", __func__, \
+ __LINE__, ## __VA_ARGS__)
+
+#ifdef PVRDMA_DEBUG
+#define pr_dbg(fmt, ...) \
+ fprintf(stdout, "%s: %-20s (%3d): " fmt, "pvrdma", __func__, __LINE__,\
+ ## __VA_ARGS__)
+#else
+#define pr_dbg(fmt, ...)
+#endif
+
+void *rdma_pci_dma_map(PCIDevice *dev, dma_addr_t addr, dma_addr_t plen);
+void rdma_pci_dma_unmap(PCIDevice *dev, void *buffer, dma_addr_t len);
+
+#endif