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kernel/linux-rt-4.4.41/drivers/net/ethernet/intel/i40e/i40e_adminq.h 4.93 KB
5113f6f70   김현기   kernel add
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  /*******************************************************************************
   *
   * Intel Ethernet Controller XL710 Family Linux Driver
   * Copyright(c) 2013 - 2014 Intel Corporation.
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms and conditions of the GNU General Public License,
   * version 2, as published by the Free Software Foundation.
   *
   * This program is distributed in the hope it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
   * more details.
   *
   * You should have received a copy of the GNU General Public License along
   * with this program.  If not, see <http://www.gnu.org/licenses/>.
   *
   * The full GNU General Public License is included in this distribution in
   * the file called "COPYING".
   *
   * Contact Information:
   * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
   * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
   *
   ******************************************************************************/
  
  #ifndef _I40E_ADMINQ_H_
  #define _I40E_ADMINQ_H_
  
  #include "i40e_osdep.h"
  #include "i40e_status.h"
  #include "i40e_adminq_cmd.h"
  
  #define I40E_ADMINQ_DESC(R, i)   \
  	(&(((struct i40e_aq_desc *)((R).desc_buf.va))[i]))
  
  #define I40E_ADMINQ_DESC_ALIGNMENT 4096
  
  struct i40e_adminq_ring {
  	struct i40e_virt_mem dma_head;	/* space for dma structures */
  	struct i40e_dma_mem desc_buf;	/* descriptor ring memory */
  	struct i40e_virt_mem cmd_buf;	/* command buffer memory */
  
  	union {
  		struct i40e_dma_mem *asq_bi;
  		struct i40e_dma_mem *arq_bi;
  	} r;
  
  	u16 count;		/* Number of descriptors */
  	u16 rx_buf_len;		/* Admin Receive Queue buffer length */
  
  	/* used for interrupt processing */
  	u16 next_to_use;
  	u16 next_to_clean;
  
  	/* used for queue tracking */
  	u32 head;
  	u32 tail;
  	u32 len;
  	u32 bah;
  	u32 bal;
  };
  
  /* ASQ transaction details */
  struct i40e_asq_cmd_details {
  	void *callback; /* cast from type I40E_ADMINQ_CALLBACK */
  	u64 cookie;
  	u16 flags_ena;
  	u16 flags_dis;
  	bool async;
  	bool postpone;
  	struct i40e_aq_desc *wb_desc;
  };
  
  #define I40E_ADMINQ_DETAILS(R, i)   \
  	(&(((struct i40e_asq_cmd_details *)((R).cmd_buf.va))[i]))
  
  /* ARQ event information */
  struct i40e_arq_event_info {
  	struct i40e_aq_desc desc;
  	u16 msg_len;
  	u16 buf_len;
  	u8 *msg_buf;
  };
  
  /* Admin Queue information */
  struct i40e_adminq_info {
  	struct i40e_adminq_ring arq;    /* receive queue */
  	struct i40e_adminq_ring asq;    /* send queue */
  	u32 asq_cmd_timeout;            /* send queue cmd write back timeout*/
  	u16 num_arq_entries;            /* receive queue depth */
  	u16 num_asq_entries;            /* send queue depth */
  	u16 arq_buf_size;               /* receive queue buffer size */
  	u16 asq_buf_size;               /* send queue buffer size */
  	u16 fw_maj_ver;                 /* firmware major version */
  	u16 fw_min_ver;                 /* firmware minor version */
  	u32 fw_build;                   /* firmware build number */
  	u16 api_maj_ver;                /* api major version */
  	u16 api_min_ver;                /* api minor version */
  	bool nvm_release_on_done;
  
  	struct mutex asq_mutex; /* Send queue lock */
  	struct mutex arq_mutex; /* Receive queue lock */
  
  	/* last status values on send and receive queues */
  	enum i40e_admin_queue_err asq_last_status;
  	enum i40e_admin_queue_err arq_last_status;
  };
  
  /**
   * i40e_aq_rc_to_posix - convert errors to user-land codes
   * aq_ret: AdminQ handler error code can override aq_rc
   * aq_rc: AdminQ firmware error code to convert
   **/
  static inline int i40e_aq_rc_to_posix(int aq_ret, int aq_rc)
  {
  	int aq_to_posix[] = {
  		0,           /* I40E_AQ_RC_OK */
  		-EPERM,      /* I40E_AQ_RC_EPERM */
  		-ENOENT,     /* I40E_AQ_RC_ENOENT */
  		-ESRCH,      /* I40E_AQ_RC_ESRCH */
  		-EINTR,      /* I40E_AQ_RC_EINTR */
  		-EIO,        /* I40E_AQ_RC_EIO */
  		-ENXIO,      /* I40E_AQ_RC_ENXIO */
  		-E2BIG,      /* I40E_AQ_RC_E2BIG */
  		-EAGAIN,     /* I40E_AQ_RC_EAGAIN */
  		-ENOMEM,     /* I40E_AQ_RC_ENOMEM */
  		-EACCES,     /* I40E_AQ_RC_EACCES */
  		-EFAULT,     /* I40E_AQ_RC_EFAULT */
  		-EBUSY,      /* I40E_AQ_RC_EBUSY */
  		-EEXIST,     /* I40E_AQ_RC_EEXIST */
  		-EINVAL,     /* I40E_AQ_RC_EINVAL */
  		-ENOTTY,     /* I40E_AQ_RC_ENOTTY */
  		-ENOSPC,     /* I40E_AQ_RC_ENOSPC */
  		-ENOSYS,     /* I40E_AQ_RC_ENOSYS */
  		-ERANGE,     /* I40E_AQ_RC_ERANGE */
  		-EPIPE,      /* I40E_AQ_RC_EFLUSHED */
  		-ESPIPE,     /* I40E_AQ_RC_BAD_ADDR */
  		-EROFS,      /* I40E_AQ_RC_EMODE */
  		-EFBIG,      /* I40E_AQ_RC_EFBIG */
  	};
  
  	/* aq_rc is invalid if AQ timed out */
  	if (aq_ret == I40E_ERR_ADMIN_QUEUE_TIMEOUT)
  		return -EAGAIN;
  
  	if (!((u32)aq_rc < (sizeof(aq_to_posix) / sizeof((aq_to_posix)[0]))))
  		return -ERANGE;
  
  	return aq_to_posix[aq_rc];
  }
  
  /* general information */
  #define I40E_AQ_LARGE_BUF	512
  #define I40E_ASQ_CMD_TIMEOUT	250  /* msecs */
  
  void i40e_fill_default_direct_cmd_desc(struct i40e_aq_desc *desc,
  				       u16 opcode);
  
  #endif /* _I40E_ADMINQ_H_ */