/*
* Copyright (c) 2004 Topspin Communications. All rights reserved.
+ * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved.
+ * Copyright (c) 2005 Mellanox Technologies. 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
#ifndef MTHCA_PROVIDER_H
#define MTHCA_PROVIDER_H
-#include <ib_verbs.h>
-#include <ib_pack.h>
+#include <rdma/ib_verbs.h>
+#include <rdma/ib_pack.h>
#define MTHCA_MPT_FLAG_ATOMIC (1 << 14)
#define MTHCA_MPT_FLAG_REMOTE_WRITE (1 << 13)
DECLARE_PCI_UNMAP_ADDR(mapping)
};
+union mthca_buf {
+ struct mthca_buf_list direct;
+ struct mthca_buf_list *page_list;
+};
+
+struct mthca_uar {
+ unsigned long pfn;
+ int index;
+};
+
+struct mthca_user_db_table;
+
+struct mthca_ucontext {
+ struct ib_ucontext ibucontext;
+ struct mthca_uar uar;
+ struct mthca_user_db_table *db_tab;
+};
+
+struct mthca_mtt;
+
struct mthca_mr {
- struct ib_mr ibmr;
- int order;
- u32 first_seg;
+ struct ib_mr ibmr;
+ struct mthca_mtt *mtt;
+};
+
+struct mthca_fmr {
+ struct ib_fmr ibmr;
+ struct ib_fmr_attr attr;
+ struct mthca_mtt *mtt;
+ int maps;
+ union {
+ struct {
+ struct mthca_mpt_entry __iomem *mpt;
+ u64 __iomem *mtts;
+ } tavor;
+ struct {
+ struct mthca_mpt_entry *mpt;
+ __be64 *mtts;
+ } arbel;
+ } mem;
};
struct mthca_pd {
u32 pd_num;
atomic_t sqp_count;
struct mthca_mr ntmr;
+ int privileged;
};
struct mthca_eq {
struct mthca_dev *dev;
int eqn;
- u32 ecr_mask;
+ u32 eqn_mask;
u32 cons_index;
u16 msi_x_vector;
u16 msi_x_entry;
struct mthca_av;
+enum mthca_ah_type {
+ MTHCA_AH_ON_HCA,
+ MTHCA_AH_PCI_POOL,
+ MTHCA_AH_KMALLOC
+};
+
struct mthca_ah {
- struct ib_ah ibah;
- int on_hca;
- u32 key;
- struct mthca_av *av;
- dma_addr_t avdma;
+ struct ib_ah ibah;
+ enum mthca_ah_type type;
+ u32 key;
+ struct mthca_av *av;
+ dma_addr_t avdma;
};
/*
* We have one global lock that protects dev->cq/qp_table. Each
* struct mthca_cq/qp also has its own lock. An individual qp lock
* may be taken inside of an individual cq lock. Both cqs attached to
- * a qp may be locked, with the send cq locked first. No other
- * nesting should be done.
+ * a qp may be locked, with the cq with the lower cqn locked first.
+ * No other nesting should be done.
*
- * Each struct mthca_cq/qp also has an atomic_t ref count. The
- * pointer from the cq/qp_table to the struct counts as one reference.
- * This reference also is good for access through the consumer API, so
- * modifying the CQ/QP etc doesn't need to take another reference.
- * Access because of a completion being polled does need a reference.
+ * Each struct mthca_cq/qp also has an ref count, protected by the
+ * corresponding table lock. The pointer from the cq/qp_table to the
+ * struct counts as one reference. This reference also is good for
+ * access through the consumer API, so modifying the CQ/QP etc doesn't
+ * need to take another reference. Access to a QP because of a
+ * completion being polled does not need a reference either.
*
* Finally, each struct mthca_cq/qp has a wait_queue_head_t for the
* destroy function to sleep on.
* - decrement ref count; if zero, wake up waiters
*
* To destroy a CQ/QP, we can do the following:
- * - lock cq/qp_table, remove pointer, unlock cq/qp_table lock
- * - decrement ref count
+ * - lock cq/qp_table
+ * - remove pointer and decrement ref count
+ * - unlock cq/qp_table lock
* - wait_event until ref count is zero
*
* It is the consumer's responsibilty to make sure that no QP
- * operations (WQE posting or state modification) are pending when the
+ * operations (WQE posting or state modification) are pending when a
* QP is destroyed. Also, the consumer must make sure that calls to
- * qp_modify are serialized.
+ * qp_modify are serialized. Similarly, the consumer is responsible
+ * for ensuring that no CQ resize operations are pending when a CQ
+ * is destroyed.
*
* Possible optimizations (wait for profile data to see if/where we
* have locks bouncing between CPUs):
* send queue and one for the receive queue)
*/
+struct mthca_cq_buf {
+ union mthca_buf queue;
+ struct mthca_mr mr;
+ int is_direct;
+};
+
+struct mthca_cq_resize {
+ struct mthca_cq_buf buf;
+ int cqe;
+ enum {
+ CQ_RESIZE_ALLOC,
+ CQ_RESIZE_READY,
+ CQ_RESIZE_SWAPPED
+ } state;
+};
+
struct mthca_cq {
- struct ib_cq ibcq;
- spinlock_t lock;
- atomic_t refcount;
- int cqn;
- int cons_index;
- int is_direct;
- union {
- struct mthca_buf_list direct;
- struct mthca_buf_list *page_list;
- } queue;
- struct mthca_mr mr;
- wait_queue_head_t wait;
+ struct ib_cq ibcq;
+ spinlock_t lock;
+ int refcount;
+ int cqn;
+ u32 cons_index;
+ struct mthca_cq_buf buf;
+ struct mthca_cq_resize *resize_buf;
+ int is_kernel;
+
+ /* Next fields are Arbel only */
+ int set_ci_db_index;
+ __be32 *set_ci_db;
+ int arm_db_index;
+ __be32 *arm_db;
+ int arm_sn;
+
+ wait_queue_head_t wait;
+ struct mutex mutex;
+};
+
+struct mthca_srq {
+ struct ib_srq ibsrq;
+ spinlock_t lock;
+ int refcount;
+ int srqn;
+ int max;
+ int max_gs;
+ int wqe_shift;
+ int first_free;
+ int last_free;
+ u16 counter; /* Arbel only */
+ int db_index; /* Arbel only */
+ __be32 *db; /* Arbel only */
+ void *last;
+
+ int is_direct;
+ u64 *wrid;
+ union mthca_buf queue;
+ struct mthca_mr mr;
+
+ wait_queue_head_t wait;
+ struct mutex mutex;
};
struct mthca_wq {
- int max;
- int cur;
- int next;
- int last_comp;
- void *last;
- int max_gs;
- int wqe_shift;
- enum ib_sig_type policy;
+ spinlock_t lock;
+ int max;
+ unsigned next_ind;
+ unsigned last_comp;
+ unsigned head;
+ unsigned tail;
+ void *last;
+ int max_gs;
+ int wqe_shift;
+
+ int db_index; /* Arbel only */
+ __be32 *db;
};
struct mthca_qp {
struct ib_qp ibqp;
- spinlock_t lock;
- atomic_t refcount;
+ int refcount;
u32 qpn;
int is_direct;
+ u8 port; /* for SQP and memfree use only */
+ u8 alt_port; /* for memfree use only */
u8 transport;
u8 state;
u8 atomic_rd_en;
struct mthca_wq rq;
struct mthca_wq sq;
+ enum ib_sig_type sq_policy;
int send_wqe_offset;
+ int max_inline_data;
u64 *wrid;
- union {
- struct mthca_buf_list direct;
- struct mthca_buf_list *page_list;
- } queue;
+ union mthca_buf queue;
wait_queue_head_t wait;
+ struct mutex mutex;
};
struct mthca_sqp {
struct mthca_qp qp;
- int port;
int pkey_index;
u32 qkey;
u32 send_psn;
dma_addr_t header_dma;
};
+static inline struct mthca_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
+{
+ return container_of(ibucontext, struct mthca_ucontext, ibucontext);
+}
+
+static inline struct mthca_fmr *to_mfmr(struct ib_fmr *ibmr)
+{
+ return container_of(ibmr, struct mthca_fmr, ibmr);
+}
+
static inline struct mthca_mr *to_mmr(struct ib_mr *ibmr)
{
return container_of(ibmr, struct mthca_mr, ibmr);
return container_of(ibcq, struct mthca_cq, ibcq);
}
+static inline struct mthca_srq *to_msrq(struct ib_srq *ibsrq)
+{
+ return container_of(ibsrq, struct mthca_srq, ibsrq);
+}
+
static inline struct mthca_qp *to_mqp(struct ib_qp *ibqp)
{
return container_of(ibqp, struct mthca_qp, ibqp);