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mthca_dev.h

/*
 * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
 * Copyright (c) 2005, 2006 Cisco Systems.  All rights reserved.
 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
 * Copyright (c) 2004 Voltaire, 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.
 *
 * $Id: mthca_dev.h 1349 2004-12-16 21:09:43Z roland $
 */

#ifndef MTHCA_DEV_H
#define MTHCA_DEV_H

#include <linux/spinlock.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/timer.h>
#include <linux/mutex.h>
#include <linux/list.h>

#include <asm/semaphore.h>

#include "mthca_provider.h"
#include "mthca_doorbell.h"

#define DRV_NAME  "ib_mthca"
#define PFX       DRV_NAME ": "
#define DRV_VERSION     "0.08"
#define DRV_RELDATE     "February 14, 2006"

enum {
      MTHCA_FLAG_DDR_HIDDEN = 1 << 1,
      MTHCA_FLAG_SRQ        = 1 << 2,
      MTHCA_FLAG_MSI        = 1 << 3,
      MTHCA_FLAG_MSI_X      = 1 << 4,
      MTHCA_FLAG_NO_LAM     = 1 << 5,
      MTHCA_FLAG_FMR        = 1 << 6,
      MTHCA_FLAG_MEMFREE    = 1 << 7,
      MTHCA_FLAG_PCIE       = 1 << 8,
      MTHCA_FLAG_SINAI_OPT  = 1 << 9
};

enum {
      MTHCA_MAX_PORTS = 2
};

enum {
      MTHCA_BOARD_ID_LEN = 64
};

enum {
      MTHCA_EQ_CONTEXT_SIZE =  0x40,
      MTHCA_CQ_CONTEXT_SIZE =  0x40,
      MTHCA_QP_CONTEXT_SIZE = 0x200,
      MTHCA_RDB_ENTRY_SIZE  =  0x20,
      MTHCA_AV_SIZE         =  0x20,
      MTHCA_MGM_ENTRY_SIZE  = 0x100,

      /* Arbel FW gives us these, but we need them for Tavor */
      MTHCA_MPT_ENTRY_SIZE  =  0x40,
      MTHCA_MTT_SEG_SIZE    =  0x40,

      MTHCA_QP_PER_MGM      = 4 * (MTHCA_MGM_ENTRY_SIZE / 16 - 2)
};

enum {
      MTHCA_EQ_CMD,
      MTHCA_EQ_ASYNC,
      MTHCA_EQ_COMP,
      MTHCA_NUM_EQ
};

enum {
      MTHCA_OPCODE_NOP            = 0x00,
      MTHCA_OPCODE_RDMA_WRITE     = 0x08,
      MTHCA_OPCODE_RDMA_WRITE_IMM = 0x09,
      MTHCA_OPCODE_SEND           = 0x0a,
      MTHCA_OPCODE_SEND_IMM       = 0x0b,
      MTHCA_OPCODE_RDMA_READ      = 0x10,
      MTHCA_OPCODE_ATOMIC_CS      = 0x11,
      MTHCA_OPCODE_ATOMIC_FA      = 0x12,
      MTHCA_OPCODE_BIND_MW        = 0x18,
      MTHCA_OPCODE_INVALID        = 0xff
};

enum {
      MTHCA_CMD_USE_EVENTS         = 1 << 0,
      MTHCA_CMD_POST_DOORBELLS     = 1 << 1
};

enum {
      MTHCA_CMD_NUM_DBELL_DWORDS = 8
};

struct mthca_cmd {
      struct pci_pool          *pool;
      struct mutex              hcr_mutex;
      struct semaphore    poll_sem;
      struct semaphore    event_sem;
      int                 max_cmds;
      spinlock_t                context_lock;
      int                       free_head;
      struct mthca_cmd_context *context;
      u16                       token_mask;
      u32                       flags;
      void __iomem             *dbell_map;
      u16                       dbell_offsets[MTHCA_CMD_NUM_DBELL_DWORDS];
};

struct mthca_limits {
      int      num_ports;
      int      vl_cap;
      int      mtu_cap;
      int      gid_table_len;
      int      pkey_table_len;
      int      local_ca_ack_delay;
      int      num_uars;
      int      max_sg;
      int      num_qps;
      int      max_wqes;
      int    max_desc_sz;
      int    max_qp_init_rdma;
      int      reserved_qps;
      int      num_srqs;
      int      max_srq_wqes;
      int      max_srq_sge;
      int      reserved_srqs;
      int      num_eecs;
      int      reserved_eecs;
      int      num_cqs;
      int      max_cqes;
      int      reserved_cqs;
      int      num_eqs;
      int      reserved_eqs;
      int      num_mpts;
      int      num_mtt_segs;
      int      fmr_reserved_mtts;
      int      reserved_mtts;
      int      reserved_mrws;
      int      reserved_uars;
      int      num_mgms;
      int      num_amgms;
      int      reserved_mcgs;
      int      num_pds;
      int      reserved_pds;
      u32      page_size_cap;
      u32      flags;
      u16      stat_rate_support;
      u8       port_width_cap;
};

struct mthca_alloc {
      u32            last;
      u32            top;
      u32            max;
      u32            mask;
      spinlock_t     lock;
      unsigned long *table;
};

struct mthca_array {
      struct {
            void    **page;
            int       used;
      } *page_list;
};

struct mthca_uar_table {
      struct mthca_alloc alloc;
      u64                uarc_base;
      int                uarc_size;
};

struct mthca_pd_table {
      struct mthca_alloc alloc;
};

struct mthca_buddy {
      unsigned long **bits;
      int             max_order;
      spinlock_t      lock;
};

struct mthca_mr_table {
      struct mthca_alloc      mpt_alloc;
      struct mthca_buddy      mtt_buddy;
      struct mthca_buddy     *fmr_mtt_buddy;
      u64                     mtt_base;
      u64                     mpt_base;
      struct mthca_icm_table *mtt_table;
      struct mthca_icm_table *mpt_table;
      struct {
            void __iomem   *mpt_base;
            void __iomem   *mtt_base;
            struct mthca_buddy mtt_buddy;
      } tavor_fmr;
};

struct mthca_eq_table {
      struct mthca_alloc alloc;
      void __iomem      *clr_int;
      u32                clr_mask;
      u32                arm_mask;
      struct mthca_eq    eq[MTHCA_NUM_EQ];
      u64                icm_virt;
      struct page       *icm_page;
      dma_addr_t         icm_dma;
      int                have_irq;
      u8                 inta_pin;
};

struct mthca_cq_table {
      struct mthca_alloc      alloc;
      spinlock_t              lock;
      struct mthca_array      cq;
      struct mthca_icm_table *table;
};

struct mthca_srq_table {
      struct mthca_alloc      alloc;
      spinlock_t              lock;
      struct mthca_array      srq;
      struct mthca_icm_table *table;
};

struct mthca_qp_table {
      struct mthca_alloc      alloc;
      u32                     rdb_base;
      int                     rdb_shift;
      int                     sqp_start;
      spinlock_t              lock;
      struct mthca_array      qp;
      struct mthca_icm_table *qp_table;
      struct mthca_icm_table *eqp_table;
      struct mthca_icm_table *rdb_table;
};

struct mthca_av_table {
      struct pci_pool   *pool;
      int                num_ddr_avs;
      u64                ddr_av_base;
      void __iomem      *av_map;
      struct mthca_alloc alloc;
};

struct mthca_mcg_table {
      struct mutex            mutex;
      struct mthca_alloc      alloc;
      struct mthca_icm_table *table;
};

struct mthca_catas_err {
      u64               addr;
      u32 __iomem        *map;
      unsigned long           stop;
      u32               size;
      struct timer_list timer;
      struct list_head  list;
};

extern struct mutex mthca_device_mutex;

struct mthca_dev {
      struct ib_device  ib_dev;
      struct pci_dev   *pdev;

      int                hca_type;
      unsigned long      mthca_flags;
      unsigned long    device_cap_flags;

      u32              rev_id;
      char             board_id[MTHCA_BOARD_ID_LEN];

      /* firmware info */
      u64              fw_ver;
      union {
            struct {
                  u64 fw_start;
                  u64 fw_end;
            }        tavor;
            struct {
                  u64 clr_int_base;
                  u64 eq_arm_base;
                  u64 eq_set_ci_base;
                  struct mthca_icm *fw_icm;
                  struct mthca_icm *aux_icm;
                  u16 fw_pages;
            }        arbel;
      }                fw;

      u64              ddr_start;
      u64              ddr_end;

      MTHCA_DECLARE_DOORBELL_LOCK(doorbell_lock)
      struct mutex cap_mask_mutex;

      void __iomem    *hcr;
      void __iomem    *kar;
      void __iomem    *clr_base;
      union {
            struct {
                  void __iomem *ecr_base;
            } tavor;
            struct {
                  void __iomem *eq_arm;
                  void __iomem *eq_set_ci_base;
            } arbel;
      } eq_regs;

      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;
      struct mthca_cq_table  cq_table;
      struct mthca_srq_table srq_table;
      struct mthca_qp_table  qp_table;
      struct mthca_av_table  av_table;
      struct mthca_mcg_table mcg_table;

      struct mthca_catas_err catas_err;

      struct mthca_uar       driver_uar;
      struct mthca_db_table *db_tab;
      struct mthca_pd        driver_pd;
      struct mthca_mr        driver_mr;

      struct ib_mad_agent  *send_agent[MTHCA_MAX_PORTS][2];
      struct ib_ah         *sm_ah[MTHCA_MAX_PORTS];
      spinlock_t            sm_lock;
      u8                    rate[MTHCA_MAX_PORTS];
};

#ifdef CONFIG_INFINIBAND_MTHCA_DEBUG
extern int mthca_debug_level;

#define mthca_dbg(mdev, format, arg...)                           \
      do {                                            \
            if (mthca_debug_level)                          \
                  dev_printk(KERN_DEBUG, &mdev->pdev->dev, format, ## arg); \
      } while (0)

#else /* CONFIG_INFINIBAND_MTHCA_DEBUG */

#define mthca_dbg(mdev, format, arg...) do { (void) mdev; } while (0)

#endif /* CONFIG_INFINIBAND_MTHCA_DEBUG */

#define mthca_err(mdev, format, arg...) \
      dev_err(&mdev->pdev->dev, format, ## arg)
#define mthca_info(mdev, format, arg...) \
      dev_info(&mdev->pdev->dev, format, ## arg)
#define mthca_warn(mdev, format, arg...) \
      dev_warn(&mdev->pdev->dev, format, ## arg)

extern void __buggy_use_of_MTHCA_GET(void);
extern void __buggy_use_of_MTHCA_PUT(void);

#define MTHCA_GET(dest, source, offset)                               \
      do {                                                          \
            void *__p = (char *) (source) + (offset);             \
            switch (sizeof (dest)) {                              \
                  case 1: (dest) = *(u8 *) __p;       break;    \
                  case 2: (dest) = be16_to_cpup(__p); break;    \
                  case 4: (dest) = be32_to_cpup(__p); break;    \
                  case 8: (dest) = be64_to_cpup(__p); break;    \
                  default: __buggy_use_of_MTHCA_GET();          \
            }                                                     \
      } while (0)

#define MTHCA_PUT(dest, source, offset)                               \
      do {                                                          \
            void *__d = ((char *) (dest) + (offset));       \
            switch (sizeof(source)) {                             \
            case 1: *(u8 *) __d = (source);                break; \
            case 2:     *(__be16 *) __d = cpu_to_be16(source); break; \
            case 4:     *(__be32 *) __d = cpu_to_be32(source); break; \
            case 8:     *(__be64 *) __d = cpu_to_be64(source); break; \
            default: __buggy_use_of_MTHCA_PUT();                  \
            }                                                     \
      } while (0)

int mthca_reset(struct mthca_dev *mdev);

u32 mthca_alloc(struct mthca_alloc *alloc);
void mthca_free(struct mthca_alloc *alloc, u32 obj);
int mthca_alloc_init(struct mthca_alloc *alloc, u32 num, u32 mask,
                 u32 reserved);
void mthca_alloc_cleanup(struct mthca_alloc *alloc);
void *mthca_array_get(struct mthca_array *array, int index);
int mthca_array_set(struct mthca_array *array, int index, void *value);
void mthca_array_clear(struct mthca_array *array, int index);
int mthca_array_init(struct mthca_array *array, int nent);
void mthca_array_cleanup(struct mthca_array *array, int nent);
int mthca_buf_alloc(struct mthca_dev *dev, int size, int max_direct,
                union mthca_buf *buf, int *is_direct, struct mthca_pd *pd,
                int hca_write, struct mthca_mr *mr);
void mthca_buf_free(struct mthca_dev *dev, int size, union mthca_buf *buf,
                int is_direct, struct mthca_mr *mr);

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);
int mthca_init_cq_table(struct mthca_dev *dev);
int mthca_init_srq_table(struct mthca_dev *dev);
int mthca_init_qp_table(struct mthca_dev *dev);
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);
void mthca_cleanup_cq_table(struct mthca_dev *dev);
void mthca_cleanup_srq_table(struct mthca_dev *dev);
void mthca_cleanup_qp_table(struct mthca_dev *dev);
void mthca_cleanup_av_table(struct mthca_dev *dev);
void mthca_cleanup_mcg_table(struct mthca_dev *dev);

int mthca_register_device(struct mthca_dev *dev);
void mthca_unregister_device(struct mthca_dev *dev);

void mthca_start_catas_poll(struct mthca_dev *dev);
void mthca_stop_catas_poll(struct mthca_dev *dev);
int __mthca_restart_one(struct pci_dev *pdev);
int mthca_catas_init(void);
void mthca_catas_cleanup(void);

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, int privileged, struct mthca_pd *pd);
void mthca_pd_free(struct mthca_dev *dev, struct mthca_pd *pd);

int mthca_write_mtt_size(struct mthca_dev *dev);

struct mthca_mtt *mthca_alloc_mtt(struct mthca_dev *dev, int size);
void mthca_free_mtt(struct mthca_dev *dev, struct mthca_mtt *mtt);
int mthca_write_mtt(struct mthca_dev *dev, struct mthca_mtt *mtt,
                int start_index, u64 *buffer_list, int list_len);
int mthca_mr_alloc(struct mthca_dev *dev, u32 pd, int buffer_size_shift,
               u64 iova, u64 total_size, u32 access, struct mthca_mr *mr);
int mthca_mr_alloc_notrans(struct mthca_dev *dev, u32 pd,
                     u32 access, struct mthca_mr *mr);
int mthca_mr_alloc_phys(struct mthca_dev *dev, u32 pd,
                  u64 *buffer_list, int buffer_size_shift,
                  int list_len, u64 iova, u64 total_size,
                  u32 access, struct mthca_mr *mr);
void mthca_free_mr(struct mthca_dev *dev,  struct mthca_mr *mr);

int mthca_fmr_alloc(struct mthca_dev *dev, u32 pd,
                u32 access, struct mthca_fmr *fmr);
int mthca_tavor_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
                       int list_len, u64 iova);
void mthca_tavor_fmr_unmap(struct mthca_dev *dev, struct mthca_fmr *fmr);
int mthca_arbel_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
                       int list_len, u64 iova);
void mthca_arbel_fmr_unmap(struct mthca_dev *dev, struct mthca_fmr *fmr);
int mthca_free_fmr(struct mthca_dev *dev,  struct mthca_fmr *fmr);

int mthca_map_eq_icm(struct mthca_dev *dev, u64 icm_virt);
void mthca_unmap_eq_icm(struct mthca_dev *dev);

int mthca_poll_cq(struct ib_cq *ibcq, int num_entries,
              struct ib_wc *entry);
int mthca_tavor_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
int mthca_arbel_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
int mthca_init_cq(struct mthca_dev *dev, int nent,
              struct mthca_ucontext *ctx, u32 pdn,
              struct mthca_cq *cq);
void mthca_free_cq(struct mthca_dev *dev,
               struct mthca_cq *cq);
void mthca_cq_completion(struct mthca_dev *dev, u32 cqn);
void mthca_cq_event(struct mthca_dev *dev, u32 cqn,
                enum ib_event_type event_type);
void mthca_cq_clean(struct mthca_dev *dev, struct mthca_cq *cq, u32 qpn,
                struct mthca_srq *srq);
void mthca_cq_resize_copy_cqes(struct mthca_cq *cq);
int mthca_alloc_cq_buf(struct mthca_dev *dev, struct mthca_cq_buf *buf, int nent);
void mthca_free_cq_buf(struct mthca_dev *dev, struct mthca_cq_buf *buf, int cqe);

int mthca_alloc_srq(struct mthca_dev *dev, struct mthca_pd *pd,
                struct ib_srq_attr *attr, struct mthca_srq *srq);
void mthca_free_srq(struct mthca_dev *dev, struct mthca_srq *srq);
int mthca_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
                 enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
int mthca_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
int mthca_max_srq_sge(struct mthca_dev *dev);
void mthca_srq_event(struct mthca_dev *dev, u32 srqn,
                 enum ib_event_type event_type);
void mthca_free_srq_wqe(struct mthca_srq *srq, u32 wqe_addr);
int mthca_tavor_post_srq_recv(struct ib_srq *srq, struct ib_recv_wr *wr,
                        struct ib_recv_wr **bad_wr);
int mthca_arbel_post_srq_recv(struct ib_srq *srq, struct ib_recv_wr *wr,
                        struct ib_recv_wr **bad_wr);

void mthca_qp_event(struct mthca_dev *dev, u32 qpn,
                enum ib_event_type event_type);
int mthca_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
               struct ib_qp_init_attr *qp_init_attr);
int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask,
                struct ib_udata *udata);
int mthca_tavor_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
                    struct ib_send_wr **bad_wr);
int mthca_tavor_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr,
                       struct ib_recv_wr **bad_wr);
int mthca_arbel_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
                    struct ib_send_wr **bad_wr);
int mthca_arbel_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr,
                       struct ib_recv_wr **bad_wr);
void mthca_free_err_wqe(struct mthca_dev *dev, struct mthca_qp *qp, int is_send,
                  int index, int *dbd, __be32 *new_wqe);
int mthca_alloc_qp(struct mthca_dev *dev,
               struct mthca_pd *pd,
               struct mthca_cq *send_cq,
               struct mthca_cq *recv_cq,
               enum ib_qp_type type,
               enum ib_sig_type send_policy,
               struct ib_qp_cap *cap,
               struct mthca_qp *qp);
int mthca_alloc_sqp(struct mthca_dev *dev,
                struct mthca_pd *pd,
                struct mthca_cq *send_cq,
                struct mthca_cq *recv_cq,
                enum ib_sig_type send_policy,
                struct ib_qp_cap *cap,
                int qpn,
                int port,
                struct mthca_sqp *sqp);
void mthca_free_qp(struct mthca_dev *dev, struct mthca_qp *qp);
int mthca_create_ah(struct mthca_dev *dev,
                struct mthca_pd *pd,
                struct ib_ah_attr *ah_attr,
                struct mthca_ah *ah);
int mthca_destroy_ah(struct mthca_dev *dev, struct mthca_ah *ah);
int mthca_read_ah(struct mthca_dev *dev, struct mthca_ah *ah,
              struct ib_ud_header *header);
int mthca_ah_query(struct ib_ah *ibah, struct ib_ah_attr *attr);
int mthca_ah_grh_present(struct mthca_ah *ah);
u8 mthca_get_rate(struct mthca_dev *dev, int static_rate, u8 port);
enum ib_rate mthca_rate_to_ib(struct mthca_dev *dev, u8 mthca_rate, u8 port);

int mthca_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid);
int mthca_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid);

int mthca_process_mad(struct ib_device *ibdev,
                  int mad_flags,
                  u8 port_num,
                  struct ib_wc *in_wc,
                  struct ib_grh *in_grh,
                  struct ib_mad *in_mad,
                  struct ib_mad *out_mad);
int mthca_create_agents(struct mthca_dev *dev);
void mthca_free_agents(struct mthca_dev *dev);

static inline struct mthca_dev *to_mdev(struct ib_device *ibdev)
{
      return container_of(ibdev, struct mthca_dev, ib_dev);
}

static inline int mthca_is_memfree(struct mthca_dev *dev)
{
      return dev->mthca_flags & MTHCA_FLAG_MEMFREE;
}

#endif /* MTHCA_DEV_H */

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