enic: add Cisco 10G Ethernet NIC driver

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 151 insertions, 0 deletions

diff --git a/drivers/net/enic/enic_res.h b/drivers/net/enic/enic_res.h
new file mode 100644
index 000000000000..68534a29b7ac
--- /dev/null
+++ b/drivers/net/enic/enic_res.h
@@ -0,0 +1,151 @@
+/*
+ * Copyright 2008 Cisco Systems, Inc.  All rights reserved.
+ * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
+ *
+ * This program is free software; you may redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * 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.
+ *
+ */
+
+#ifndef _ENIC_RES_H_
+#define _ENIC_RES_H_
+
+#include "wq_enet_desc.h"
+#include "rq_enet_desc.h"
+#include "vnic_wq.h"
+#include "vnic_rq.h"
+
+#define ENIC_MIN_WQ_DESCS               64
+#define ENIC_MAX_WQ_DESCS               4096
+#define ENIC_MIN_RQ_DESCS               64
+#define ENIC_MAX_RQ_DESCS               4096
+
+#define ENIC_MIN_MTU                    576  /* minimum for IPv4 */
+#define ENIC_MAX_MTU                    9000
+
+#define ENIC_MULTICAST_PERFECT_FILTERS  32
+
+#define ENIC_NON_TSO_MAX_DESC           16
+
+#define ENIC_SETTING(enic, f) ((enic->config.flags & VENETF_##f) ? 1 : 0)
+
+static inline void enic_queue_wq_desc_ex(struct vnic_wq *wq,
+        void *os_buf, dma_addr_t dma_addr, unsigned int len,
+        unsigned int mss_or_csum_offset, unsigned int hdr_len,
+        int vlan_tag_insert, unsigned int vlan_tag,
+        int offload_mode, int cq_entry, int sop, int eop)
+{
+        struct wq_enet_desc *desc = vnic_wq_next_desc(wq);
+
+        wq_enet_desc_enc(desc,
+                (u64)dma_addr | VNIC_PADDR_TARGET,
+                (u16)len,
+                (u16)mss_or_csum_offset,
+                (u16)hdr_len, (u8)offload_mode,
+                (u8)eop, (u8)cq_entry,
+                0, /* fcoe_encap */
+                (u8)vlan_tag_insert,
+                (u16)vlan_tag,
+                0 /* loopback */);
+
+        wmb();
+
+        vnic_wq_post(wq, os_buf, dma_addr, len, sop, eop);
+}
+
+static inline void enic_queue_wq_desc_cont(struct vnic_wq *wq,
+        void *os_buf, dma_addr_t dma_addr, unsigned int len, int eop)
+{
+        enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
+                0, 0, 0, 0, 0,
+                eop, 0 /* !SOP */, eop);
+}
+
+static inline void enic_queue_wq_desc(struct vnic_wq *wq, void *os_buf,
+        dma_addr_t dma_addr, unsigned int len, int vlan_tag_insert,
+        unsigned int vlan_tag, int eop)
+{
+        enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
+                0, 0, vlan_tag_insert, vlan_tag,
+                WQ_ENET_OFFLOAD_MODE_CSUM,
+                eop, 1 /* SOP */, eop);
+}
+
+static inline void enic_queue_wq_desc_csum(struct vnic_wq *wq,
+        void *os_buf, dma_addr_t dma_addr, unsigned int len,
+        int ip_csum, int tcpudp_csum, int vlan_tag_insert,
+        unsigned int vlan_tag, int eop)
+{
+        enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
+                (ip_csum ? 1 : 0) + (tcpudp_csum ? 2 : 0),
+                0, vlan_tag_insert, vlan_tag,
+                WQ_ENET_OFFLOAD_MODE_CSUM,
+                eop, 1 /* SOP */, eop);
+}
+
+static inline void enic_queue_wq_desc_csum_l4(struct vnic_wq *wq,
+        void *os_buf, dma_addr_t dma_addr, unsigned int len,
+        unsigned int csum_offset, unsigned int hdr_len,
+        int vlan_tag_insert, unsigned int vlan_tag, int eop)
+{
+        enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
+                csum_offset, hdr_len, vlan_tag_insert, vlan_tag,
+                WQ_ENET_OFFLOAD_MODE_CSUM_L4,
+                eop, 1 /* SOP */, eop);
+}
+
+static inline void enic_queue_wq_desc_tso(struct vnic_wq *wq,
+        void *os_buf, dma_addr_t dma_addr, unsigned int len,
+        unsigned int mss, unsigned int hdr_len, int vlan_tag_insert,
+        unsigned int vlan_tag, int eop)
+{
+        enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
+                mss, hdr_len, vlan_tag_insert, vlan_tag,
+                WQ_ENET_OFFLOAD_MODE_TSO,
+                eop, 1 /* SOP */, eop);
+}
+
+static inline void enic_queue_rq_desc(struct vnic_rq *rq,
+        void *os_buf, unsigned int os_buf_index,
+        dma_addr_t dma_addr, unsigned int len)
+{
+        struct rq_enet_desc *desc = vnic_rq_next_desc(rq);
+        u8 type = os_buf_index ?
+                RQ_ENET_TYPE_NOT_SOP : RQ_ENET_TYPE_ONLY_SOP;
+
+        rq_enet_desc_enc(desc,
+                (u64)dma_addr | VNIC_PADDR_TARGET,
+                type, (u16)len);
+
+        wmb();
+
+        vnic_rq_post(rq, os_buf, os_buf_index, dma_addr, len);
+}
+
+struct enic;
+
+int enic_get_vnic_config(struct enic *);
+void enic_add_station_addr(struct enic *enic);
+void enic_add_multicast_addr(struct enic *enic, u8 *addr);
+void enic_del_multicast_addr(struct enic *enic, u8 *addr);
+void enic_add_vlan(struct enic *enic, u16 vlanid);
+void enic_del_vlan(struct enic *enic, u16 vlanid);
+int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type,
+        u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en,
+        u8 ig_vlan_strip_en);
+void enic_get_res_counts(struct enic *enic);
+void enic_init_vnic_resources(struct enic *enic);
+int enic_alloc_vnic_resources(struct enic *);
+void enic_free_vnic_resources(struct enic *);
+
+#endif /* _ENIC_RES_H_ */