RDMA/nes: Add a driver for NetEffect RNICs
Add a standard NIC and RDMA/iWARP driver for NetEffect 1/10Gb ethernet adapters.
Signed-off-by: Glenn Streiff <gstreiff@neteffect.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/drivers/infiniband/hw/nes/nes.h b/drivers/infiniband/hw/nes/nes.h
new file mode 100644
index 0000000..fd57e8a
--- /dev/null
+++ b/drivers/infiniband/hw/nes/nes.h
@@ -0,0 +1,560 @@
+/*
+ * Copyright (c) 2006 - 2008 NetEffect, Inc. All rights reserved.
+ * Copyright (c) 2005 Open Grid Computing, Inc. 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.
+ */
+
+#ifndef __NES_H
+#define __NES_H
+
+#include <linux/netdevice.h>
+#include <linux/inetdevice.h>
+#include <linux/spinlock.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/workqueue.h>
+#include <linux/slab.h>
+#include <asm/semaphore.h>
+#include <linux/version.h>
+#include <asm/io.h>
+#include <linux/crc32c.h>
+
+#include <rdma/ib_smi.h>
+#include <rdma/ib_verbs.h>
+#include <rdma/ib_pack.h>
+#include <rdma/rdma_cm.h>
+#include <rdma/iw_cm.h>
+
+#define NES_SEND_FIRST_WRITE
+
+#define QUEUE_DISCONNECTS
+
+#define DRV_BUILD "1"
+
+#define DRV_NAME "iw_nes"
+#define DRV_VERSION "1.0 KO Build " DRV_BUILD
+#define PFX DRV_NAME ": "
+
+/*
+ * NetEffect PCI vendor id and NE010 PCI device id.
+ */
+#ifndef PCI_VENDOR_ID_NETEFFECT /* not in pci.ids yet */
+#define PCI_VENDOR_ID_NETEFFECT 0x1678
+#define PCI_DEVICE_ID_NETEFFECT_NE020 0x0100
+#endif
+
+#define NE020_REV 4
+#define NE020_REV1 5
+
+#define BAR_0 0
+#define BAR_1 2
+
+#define RX_BUF_SIZE (1536 + 8)
+#define NES_REG0_SIZE (4 * 1024)
+#define NES_TX_TIMEOUT (6*HZ)
+#define NES_FIRST_QPN 64
+#define NES_SW_CONTEXT_ALIGN 1024
+
+#define NES_NIC_MAX_NICS 16
+#define NES_MAX_ARP_TABLE_SIZE 4096
+
+#define NES_NIC_CEQ_SIZE 8
+/* NICs will be on a separate CQ */
+#define NES_CCEQ_SIZE ((nesadapter->max_cq / nesadapter->port_count) - 32)
+
+#define NES_MAX_PORT_COUNT 4
+
+#define MAX_DPC_ITERATIONS 128
+
+#define NES_CQP_REQUEST_NO_DOORBELL_RING 0
+#define NES_CQP_REQUEST_RING_DOORBELL 1
+
+#define NES_DRV_OPT_ENABLE_MPA_VER_0 0x00000001
+#define NES_DRV_OPT_DISABLE_MPA_CRC 0x00000002
+#define NES_DRV_OPT_DISABLE_FIRST_WRITE 0x00000004
+#define NES_DRV_OPT_DISABLE_INTF 0x00000008
+#define NES_DRV_OPT_ENABLE_MSI 0x00000010
+#define NES_DRV_OPT_DUAL_LOGICAL_PORT 0x00000020
+#define NES_DRV_OPT_SUPRESS_OPTION_BC 0x00000040
+#define NES_DRV_OPT_NO_INLINE_DATA 0x00000080
+#define NES_DRV_OPT_DISABLE_INT_MOD 0x00000100
+#define NES_DRV_OPT_DISABLE_VIRT_WQ 0x00000200
+
+#define NES_AEQ_EVENT_TIMEOUT 2500
+#define NES_DISCONNECT_EVENT_TIMEOUT 2000
+
+/* debug levels */
+/* must match userspace */
+#define NES_DBG_HW 0x00000001
+#define NES_DBG_INIT 0x00000002
+#define NES_DBG_ISR 0x00000004
+#define NES_DBG_PHY 0x00000008
+#define NES_DBG_NETDEV 0x00000010
+#define NES_DBG_CM 0x00000020
+#define NES_DBG_CM1 0x00000040
+#define NES_DBG_NIC_RX 0x00000080
+#define NES_DBG_NIC_TX 0x00000100
+#define NES_DBG_CQP 0x00000200
+#define NES_DBG_MMAP 0x00000400
+#define NES_DBG_MR 0x00000800
+#define NES_DBG_PD 0x00001000
+#define NES_DBG_CQ 0x00002000
+#define NES_DBG_QP 0x00004000
+#define NES_DBG_MOD_QP 0x00008000
+#define NES_DBG_AEQ 0x00010000
+#define NES_DBG_IW_RX 0x00020000
+#define NES_DBG_IW_TX 0x00040000
+#define NES_DBG_SHUTDOWN 0x00080000
+#define NES_DBG_RSVD1 0x10000000
+#define NES_DBG_RSVD2 0x20000000
+#define NES_DBG_RSVD3 0x40000000
+#define NES_DBG_RSVD4 0x80000000
+#define NES_DBG_ALL 0xffffffff
+
+#ifdef CONFIG_INFINIBAND_NES_DEBUG
+#define nes_debug(level, fmt, args...) \
+ if (level & nes_debug_level) \
+ printk(KERN_ERR PFX "%s[%u]: " fmt, __FUNCTION__, __LINE__, ##args)
+
+#define assert(expr) \
+if (!(expr)) { \
+ printk(KERN_ERR PFX "Assertion failed! %s, %s, %s, line %d\n", \
+ #expr, __FILE__, __FUNCTION__, __LINE__); \
+}
+
+#define NES_EVENT_TIMEOUT 1200000
+#else
+#define nes_debug(level, fmt, args...)
+#define assert(expr) do {} while (0)
+
+#define NES_EVENT_TIMEOUT 100000
+#endif
+
+#include "nes_hw.h"
+#include "nes_verbs.h"
+#include "nes_context.h"
+#include "nes_user.h"
+#include "nes_cm.h"
+
+extern int max_mtu;
+extern int nics_per_function;
+#define max_frame_len (max_mtu+ETH_HLEN)
+extern int interrupt_mod_interval;
+extern int nes_if_count;
+extern int mpa_version;
+extern int disable_mpa_crc;
+extern unsigned int send_first;
+extern unsigned int nes_drv_opt;
+extern unsigned int nes_debug_level;
+
+extern struct list_head nes_adapter_list;
+extern struct list_head nes_dev_list;
+
+extern struct nes_cm_core *g_cm_core;
+
+extern atomic_t cm_connects;
+extern atomic_t cm_accepts;
+extern atomic_t cm_disconnects;
+extern atomic_t cm_closes;
+extern atomic_t cm_connecteds;
+extern atomic_t cm_connect_reqs;
+extern atomic_t cm_rejects;
+extern atomic_t mod_qp_timouts;
+extern atomic_t qps_created;
+extern atomic_t qps_destroyed;
+extern atomic_t sw_qps_destroyed;
+extern u32 mh_detected;
+extern u32 mh_pauses_sent;
+extern u32 cm_packets_sent;
+extern u32 cm_packets_bounced;
+extern u32 cm_packets_created;
+extern u32 cm_packets_received;
+extern u32 cm_packets_dropped;
+extern u32 cm_packets_retrans;
+extern u32 cm_listens_created;
+extern u32 cm_listens_destroyed;
+extern u32 cm_backlog_drops;
+extern atomic_t cm_loopbacks;
+extern atomic_t cm_nodes_created;
+extern atomic_t cm_nodes_destroyed;
+extern atomic_t cm_accel_dropped_pkts;
+extern atomic_t cm_resets_recvd;
+
+extern u32 crit_err_count;
+extern u32 int_mod_timer_init;
+extern u32 int_mod_cq_depth_256;
+extern u32 int_mod_cq_depth_128;
+extern u32 int_mod_cq_depth_32;
+extern u32 int_mod_cq_depth_24;
+extern u32 int_mod_cq_depth_16;
+extern u32 int_mod_cq_depth_4;
+extern u32 int_mod_cq_depth_1;
+
+extern atomic_t cqp_reqs_allocated;
+extern atomic_t cqp_reqs_freed;
+extern atomic_t cqp_reqs_dynallocated;
+extern atomic_t cqp_reqs_dynfreed;
+extern atomic_t cqp_reqs_queued;
+extern atomic_t cqp_reqs_redriven;
+
+
+struct nes_device {
+ struct nes_adapter *nesadapter;
+ void __iomem *regs;
+ void __iomem *index_reg;
+ struct pci_dev *pcidev;
+ struct net_device *netdev[NES_NIC_MAX_NICS];
+ u64 link_status_interrupts;
+ struct tasklet_struct dpc_tasklet;
+ spinlock_t indexed_regs_lock;
+ unsigned long csr_start;
+ unsigned long doorbell_region;
+ unsigned long doorbell_start;
+ unsigned long mac_tx_errors;
+ unsigned long mac_pause_frames_sent;
+ unsigned long mac_pause_frames_received;
+ unsigned long mac_rx_errors;
+ unsigned long mac_rx_crc_errors;
+ unsigned long mac_rx_symbol_err_frames;
+ unsigned long mac_rx_jabber_frames;
+ unsigned long mac_rx_oversized_frames;
+ unsigned long mac_rx_short_frames;
+ unsigned long port_rx_discards;
+ unsigned long port_tx_discards;
+ unsigned int mac_index;
+ unsigned int nes_stack_start;
+
+ /* Control Structures */
+ void *cqp_vbase;
+ dma_addr_t cqp_pbase;
+ u32 cqp_mem_size;
+ u8 ceq_index;
+ u8 nic_ceq_index;
+ struct nes_hw_cqp cqp;
+ struct nes_hw_cq ccq;
+ struct list_head cqp_avail_reqs;
+ struct list_head cqp_pending_reqs;
+ struct nes_cqp_request *nes_cqp_requests;
+
+ u32 int_req;
+ u32 int_stat;
+ u32 timer_int_req;
+ u32 timer_only_int_count;
+ u32 intf_int_req;
+ u32 last_mac_tx_pauses;
+ u32 last_used_chunks_tx;
+ struct list_head list;
+
+ u16 base_doorbell_index;
+ u16 currcq_count;
+ u16 deepcq_count;
+ u8 msi_enabled;
+ u8 netdev_count;
+ u8 napi_isr_ran;
+ u8 disable_rx_flow_control;
+ u8 disable_tx_flow_control;
+};
+
+
+static inline void
+set_wqe_64bit_value(__le32 *wqe_words, u32 index, u64 value)
+{
+ wqe_words[index] = cpu_to_le32((u32) ((unsigned long)value));
+ wqe_words[index + 1] = cpu_to_le32((u32)(upper_32_bits((unsigned long)value)));
+}
+
+static inline void
+set_wqe_32bit_value(__le32 *wqe_words, u32 index, u32 value)
+{
+ wqe_words[index] = cpu_to_le32(value);
+}
+
+static inline void
+nes_fill_init_cqp_wqe(struct nes_hw_cqp_wqe *cqp_wqe, struct nes_device *nesdev)
+{
+ set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_COMP_CTX_LOW_IDX,
+ (u64)((unsigned long) &nesdev->cqp));
+ cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_LOW_IDX] = 0;
+ cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_HIGH_IDX] = 0;
+ cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX] = 0;
+ cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_LEN_IDX] = 0;
+ cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_LOW_IDX] = 0;
+ cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PA_LOW_IDX] = 0;
+ cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PA_HIGH_IDX] = 0;
+}
+
+static inline void
+nes_fill_init_qp_wqe(struct nes_hw_qp_wqe *wqe, struct nes_qp *nesqp, u32 head)
+{
+ u32 value;
+ value = ((u32)((unsigned long) nesqp)) | head;
+ set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_CTX_HIGH_IDX,
+ (u32)(upper_32_bits((unsigned long)(nesqp))));
+ set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX, value);
+}
+
+/* Read from memory-mapped device */
+static inline u32 nes_read_indexed(struct nes_device *nesdev, u32 reg_index)
+{
+ unsigned long flags;
+ void __iomem *addr = nesdev->index_reg;
+ u32 value;
+
+ spin_lock_irqsave(&nesdev->indexed_regs_lock, flags);
+
+ writel(reg_index, addr);
+ value = readl((void __iomem *)addr + 4);
+
+ spin_unlock_irqrestore(&nesdev->indexed_regs_lock, flags);
+ return value;
+}
+
+static inline u32 nes_read32(const void __iomem *addr)
+{
+ return readl(addr);
+}
+
+static inline u16 nes_read16(const void __iomem *addr)
+{
+ return readw(addr);
+}
+
+static inline u8 nes_read8(const void __iomem *addr)
+{
+ return readb(addr);
+}
+
+/* Write to memory-mapped device */
+static inline void nes_write_indexed(struct nes_device *nesdev, u32 reg_index, u32 val)
+{
+ unsigned long flags;
+ void __iomem *addr = nesdev->index_reg;
+
+ spin_lock_irqsave(&nesdev->indexed_regs_lock, flags);
+
+ writel(reg_index, addr);
+ writel(val, (void __iomem *)addr + 4);
+
+ spin_unlock_irqrestore(&nesdev->indexed_regs_lock, flags);
+}
+
+static inline void nes_write32(void __iomem *addr, u32 val)
+{
+ writel(val, addr);
+}
+
+static inline void nes_write16(void __iomem *addr, u16 val)
+{
+ writew(val, addr);
+}
+
+static inline void nes_write8(void __iomem *addr, u8 val)
+{
+ writeb(val, addr);
+}
+
+
+
+static inline int nes_alloc_resource(struct nes_adapter *nesadapter,
+ unsigned long *resource_array, u32 max_resources,
+ u32 *req_resource_num, u32 *next)
+{
+ unsigned long flags;
+ u32 resource_num;
+
+ spin_lock_irqsave(&nesadapter->resource_lock, flags);
+
+ resource_num = find_next_zero_bit(resource_array, max_resources, *next);
+ if (resource_num >= max_resources) {
+ resource_num = find_first_zero_bit(resource_array, max_resources);
+ if (resource_num >= max_resources) {
+ printk(KERN_ERR PFX "%s: No available resourcess.\n", __FUNCTION__);
+ spin_unlock_irqrestore(&nesadapter->resource_lock, flags);
+ return -EMFILE;
+ }
+ }
+ set_bit(resource_num, resource_array);
+ *next = resource_num+1;
+ if (*next == max_resources) {
+ *next = 0;
+ }
+ spin_unlock_irqrestore(&nesadapter->resource_lock, flags);
+ *req_resource_num = resource_num;
+
+ return 0;
+}
+
+static inline int nes_is_resource_allocated(struct nes_adapter *nesadapter,
+ unsigned long *resource_array, u32 resource_num)
+{
+ unsigned long flags;
+ int bit_is_set;
+
+ spin_lock_irqsave(&nesadapter->resource_lock, flags);
+
+ bit_is_set = test_bit(resource_num, resource_array);
+ nes_debug(NES_DBG_HW, "resource_num %u is%s allocated.\n",
+ resource_num, (bit_is_set ? "": " not"));
+ spin_unlock_irqrestore(&nesadapter->resource_lock, flags);
+
+ return bit_is_set;
+}
+
+static inline void nes_free_resource(struct nes_adapter *nesadapter,
+ unsigned long *resource_array, u32 resource_num)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&nesadapter->resource_lock, flags);
+ clear_bit(resource_num, resource_array);
+ spin_unlock_irqrestore(&nesadapter->resource_lock, flags);
+}
+
+static inline struct nes_vnic *to_nesvnic(struct ib_device *ibdev)
+{
+ return container_of(ibdev, struct nes_ib_device, ibdev)->nesvnic;
+}
+
+static inline struct nes_pd *to_nespd(struct ib_pd *ibpd)
+{
+ return container_of(ibpd, struct nes_pd, ibpd);
+}
+
+static inline struct nes_ucontext *to_nesucontext(struct ib_ucontext *ibucontext)
+{
+ return container_of(ibucontext, struct nes_ucontext, ibucontext);
+}
+
+static inline struct nes_mr *to_nesmr(struct ib_mr *ibmr)
+{
+ return container_of(ibmr, struct nes_mr, ibmr);
+}
+
+static inline struct nes_mr *to_nesmr_from_ibfmr(struct ib_fmr *ibfmr)
+{
+ return container_of(ibfmr, struct nes_mr, ibfmr);
+}
+
+static inline struct nes_mr *to_nesmw(struct ib_mw *ibmw)
+{
+ return container_of(ibmw, struct nes_mr, ibmw);
+}
+
+static inline struct nes_fmr *to_nesfmr(struct nes_mr *nesmr)
+{
+ return container_of(nesmr, struct nes_fmr, nesmr);
+}
+
+static inline struct nes_cq *to_nescq(struct ib_cq *ibcq)
+{
+ return container_of(ibcq, struct nes_cq, ibcq);
+}
+
+static inline struct nes_qp *to_nesqp(struct ib_qp *ibqp)
+{
+ return container_of(ibqp, struct nes_qp, ibqp);
+}
+
+
+
+/* nes.c */
+void nes_add_ref(struct ib_qp *);
+void nes_rem_ref(struct ib_qp *);
+struct ib_qp *nes_get_qp(struct ib_device *, int);
+
+
+/* nes_hw.c */
+struct nes_adapter *nes_init_adapter(struct nes_device *, u8);
+void nes_nic_init_timer_defaults(struct nes_device *, u8);
+unsigned int nes_reset_adapter_ne020(struct nes_device *, u8 *);
+int nes_init_serdes(struct nes_device *, u8, u8, u8);
+void nes_init_csr_ne020(struct nes_device *, u8, u8);
+void nes_destroy_adapter(struct nes_adapter *);
+int nes_init_cqp(struct nes_device *);
+int nes_init_phy(struct nes_device *);
+int nes_init_nic_qp(struct nes_device *, struct net_device *);
+void nes_destroy_nic_qp(struct nes_vnic *);
+int nes_napi_isr(struct nes_device *);
+void nes_dpc(unsigned long);
+void nes_process_ceq(struct nes_device *, struct nes_hw_ceq *);
+void nes_process_aeq(struct nes_device *, struct nes_hw_aeq *);
+void nes_process_mac_intr(struct nes_device *, u32);
+void nes_nic_napi_ce_handler(struct nes_device *, struct nes_hw_nic_cq *);
+void nes_nic_ce_handler(struct nes_device *, struct nes_hw_nic_cq *);
+void nes_cqp_ce_handler(struct nes_device *, struct nes_hw_cq *);
+void nes_process_iwarp_aeqe(struct nes_device *, struct nes_hw_aeqe *);
+void nes_iwarp_ce_handler(struct nes_device *, struct nes_hw_cq *);
+int nes_destroy_cqp(struct nes_device *);
+int nes_nic_cm_xmit(struct sk_buff *, struct net_device *);
+
+/* nes_nic.c */
+void nes_netdev_set_multicast_list(struct net_device *);
+void nes_netdev_exit(struct nes_vnic *);
+struct net_device *nes_netdev_init(struct nes_device *, void __iomem *);
+void nes_netdev_destroy(struct net_device *);
+int nes_nic_cm_xmit(struct sk_buff *, struct net_device *);
+
+/* nes_cm.c */
+void *nes_cm_create(struct net_device *);
+int nes_cm_recv(struct sk_buff *, struct net_device *);
+void nes_update_arp(unsigned char *, u32, u32, u16, u16);
+void nes_manage_arp_cache(struct net_device *, unsigned char *, u32, u32);
+void nes_sock_release(struct nes_qp *, unsigned long *);
+struct nes_cm_core *nes_cm_alloc_core(void);
+void flush_wqes(struct nes_device *nesdev, struct nes_qp *, u32, u32);
+int nes_manage_apbvt(struct nes_vnic *, u32, u32, u32);
+int nes_cm_disconn(struct nes_qp *);
+void nes_cm_disconn_worker(void *);
+
+/* nes_verbs.c */
+int nes_hw_modify_qp(struct nes_device *, struct nes_qp *, u32, u32);
+int nes_modify_qp(struct ib_qp *, struct ib_qp_attr *, int, struct ib_udata *);
+struct nes_ib_device *nes_init_ofa_device(struct net_device *);
+void nes_destroy_ofa_device(struct nes_ib_device *);
+int nes_register_ofa_device(struct nes_ib_device *);
+void nes_unregister_ofa_device(struct nes_ib_device *);
+
+/* nes_util.c */
+int nes_read_eeprom_values(struct nes_device *, struct nes_adapter *);
+void nes_write_1G_phy_reg(struct nes_device *, u8, u8, u16);
+void nes_read_1G_phy_reg(struct nes_device *, u8, u8, u16 *);
+void nes_write_10G_phy_reg(struct nes_device *, u16, u8, u16);
+void nes_read_10G_phy_reg(struct nes_device *, u16, u8);
+struct nes_cqp_request *nes_get_cqp_request(struct nes_device *);
+void nes_post_cqp_request(struct nes_device *, struct nes_cqp_request *, int);
+int nes_arp_table(struct nes_device *, u32, u8 *, u32);
+void nes_mh_fix(unsigned long);
+void nes_clc(unsigned long);
+void nes_dump_mem(unsigned int, void *, int);
+u32 nes_crc32(u32, u32, u32, u32, u8 *, u32, u32, u32);
+
+#endif /* __NES_H */