forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
144 lines
3.4 KiB
144 lines
3.4 KiB
/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */ |
|
/* |
|
* Copyright 2018-2020 Amazon.com, Inc. or its affiliates. All rights reserved. |
|
*/ |
|
|
|
#ifndef _EFA_COM_H_ |
|
#define _EFA_COM_H_ |
|
|
|
#include <linux/delay.h> |
|
#include <linux/device.h> |
|
#include <linux/dma-mapping.h> |
|
#include <linux/semaphore.h> |
|
#include <linux/sched.h> |
|
|
|
#include <rdma/ib_verbs.h> |
|
|
|
#include "efa_common_defs.h" |
|
#include "efa_admin_defs.h" |
|
#include "efa_admin_cmds_defs.h" |
|
#include "efa_regs_defs.h" |
|
|
|
#define EFA_MAX_HANDLERS 256 |
|
|
|
struct efa_com_admin_cq { |
|
struct efa_admin_acq_entry *entries; |
|
dma_addr_t dma_addr; |
|
spinlock_t lock; /* Protects ACQ */ |
|
|
|
u16 cc; /* consumer counter */ |
|
u8 phase; |
|
}; |
|
|
|
struct efa_com_admin_sq { |
|
struct efa_admin_aq_entry *entries; |
|
dma_addr_t dma_addr; |
|
spinlock_t lock; /* Protects ASQ */ |
|
|
|
u32 __iomem *db_addr; |
|
|
|
u16 cc; /* consumer counter */ |
|
u16 pc; /* producer counter */ |
|
u8 phase; |
|
|
|
}; |
|
|
|
/* Don't use anything other than atomic64 */ |
|
struct efa_com_stats_admin { |
|
atomic64_t submitted_cmd; |
|
atomic64_t completed_cmd; |
|
atomic64_t cmd_err; |
|
atomic64_t no_completion; |
|
}; |
|
|
|
enum { |
|
EFA_AQ_STATE_RUNNING_BIT = 0, |
|
EFA_AQ_STATE_POLLING_BIT = 1, |
|
}; |
|
|
|
struct efa_com_admin_queue { |
|
void *dmadev; |
|
void *efa_dev; |
|
struct efa_comp_ctx *comp_ctx; |
|
u32 completion_timeout; /* usecs */ |
|
u16 poll_interval; /* msecs */ |
|
u16 depth; |
|
struct efa_com_admin_cq cq; |
|
struct efa_com_admin_sq sq; |
|
u16 msix_vector_idx; |
|
|
|
unsigned long state; |
|
|
|
/* Count the number of available admin commands */ |
|
struct semaphore avail_cmds; |
|
|
|
struct efa_com_stats_admin stats; |
|
|
|
spinlock_t comp_ctx_lock; /* Protects completion context pool */ |
|
u32 *comp_ctx_pool; |
|
u16 comp_ctx_pool_next; |
|
}; |
|
|
|
struct efa_aenq_handlers; |
|
|
|
struct efa_com_aenq { |
|
struct efa_admin_aenq_entry *entries; |
|
struct efa_aenq_handlers *aenq_handlers; |
|
dma_addr_t dma_addr; |
|
u32 cc; /* consumer counter */ |
|
u16 msix_vector_idx; |
|
u16 depth; |
|
u8 phase; |
|
}; |
|
|
|
struct efa_com_mmio_read { |
|
struct efa_admin_mmio_req_read_less_resp *read_resp; |
|
dma_addr_t read_resp_dma_addr; |
|
u16 seq_num; |
|
u16 mmio_read_timeout; /* usecs */ |
|
/* serializes mmio reads */ |
|
spinlock_t lock; |
|
}; |
|
|
|
struct efa_com_dev { |
|
struct efa_com_admin_queue aq; |
|
struct efa_com_aenq aenq; |
|
u8 __iomem *reg_bar; |
|
void *dmadev; |
|
void *efa_dev; |
|
u32 supported_features; |
|
u32 dma_addr_bits; |
|
|
|
struct efa_com_mmio_read mmio_read; |
|
}; |
|
|
|
typedef void (*efa_aenq_handler)(void *data, |
|
struct efa_admin_aenq_entry *aenq_e); |
|
|
|
/* Holds aenq handlers. Indexed by AENQ event group */ |
|
struct efa_aenq_handlers { |
|
efa_aenq_handler handlers[EFA_MAX_HANDLERS]; |
|
efa_aenq_handler unimplemented_handler; |
|
}; |
|
|
|
int efa_com_admin_init(struct efa_com_dev *edev, |
|
struct efa_aenq_handlers *aenq_handlers); |
|
void efa_com_admin_destroy(struct efa_com_dev *edev); |
|
int efa_com_dev_reset(struct efa_com_dev *edev, |
|
enum efa_regs_reset_reason_types reset_reason); |
|
void efa_com_set_admin_polling_mode(struct efa_com_dev *edev, bool polling); |
|
void efa_com_admin_q_comp_intr_handler(struct efa_com_dev *edev); |
|
int efa_com_mmio_reg_read_init(struct efa_com_dev *edev); |
|
void efa_com_mmio_reg_read_destroy(struct efa_com_dev *edev); |
|
|
|
int efa_com_validate_version(struct efa_com_dev *edev); |
|
int efa_com_get_dma_width(struct efa_com_dev *edev); |
|
|
|
int efa_com_cmd_exec(struct efa_com_admin_queue *aq, |
|
struct efa_admin_aq_entry *cmd, |
|
size_t cmd_size, |
|
struct efa_admin_acq_entry *comp, |
|
size_t comp_size); |
|
void efa_com_aenq_intr_handler(struct efa_com_dev *edev, void *data); |
|
|
|
#endif /* _EFA_COM_H_ */
|
|
|