drivers/net/ethernet/intel/iavf/iavf_adminq.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
   3
   4 #ifndef _IAVF_ADMINQ_H_
   5 #define _IAVF_ADMINQ_H_
   6
   7 #include "iavf_osdep.h"
   8 #include "iavf_status.h"
   9 #include "iavf_adminq_cmd.h"
  10
  11 #define IAVF_ADMINQ_DESC(R, i)   \
  12         (&(((struct iavf_aq_desc *)((R).desc_buf.va))[i]))
  13
  14 #define IAVF_ADMINQ_DESC_ALIGNMENT 4096
  15
  16 struct iavf_adminq_ring {
  17         struct iavf_virt_mem dma_head;  /* space for dma structures */
  18         struct iavf_dma_mem desc_buf;   /* descriptor ring memory */
  19         struct iavf_virt_mem cmd_buf;   /* command buffer memory */
  20
  21         union {
  22                 struct iavf_dma_mem *asq_bi;
  23                 struct iavf_dma_mem *arq_bi;
  24         } r;
  25
  26         u16 count;              /* Number of descriptors */
  27         u16 rx_buf_len;         /* Admin Receive Queue buffer length */
  28
  29         /* used for interrupt processing */
  30         u16 next_to_use;
  31         u16 next_to_clean;
  32 };
  33
  34 /* ASQ transaction details */
  35 struct iavf_asq_cmd_details {
  36         void *callback; /* cast from type IAVF_ADMINQ_CALLBACK */
  37         u64 cookie;
  38         u16 flags_ena;
  39         u16 flags_dis;
  40         bool async;
  41         bool postpone;
  42         struct iavf_aq_desc *wb_desc;
  43 };
  44
  45 #define IAVF_ADMINQ_DETAILS(R, i)   \
  46         (&(((struct iavf_asq_cmd_details *)((R).cmd_buf.va))[i]))
  47
  48 /* ARQ event information */
  49 struct iavf_arq_event_info {
  50         struct iavf_aq_desc desc;
  51         u16 msg_len;
  52         u16 buf_len;
  53         u8 *msg_buf;
  54 };
  55
  56 /* Admin Queue information */
  57 struct iavf_adminq_info {
  58         struct iavf_adminq_ring arq;    /* receive queue */
  59         struct iavf_adminq_ring asq;    /* send queue */
  60         u32 asq_cmd_timeout;            /* send queue cmd write back timeout*/
  61         u16 num_arq_entries;            /* receive queue depth */
  62         u16 num_asq_entries;            /* send queue depth */
  63         u16 arq_buf_size;               /* receive queue buffer size */
  64         u16 asq_buf_size;               /* send queue buffer size */
  65         u16 fw_maj_ver;                 /* firmware major version */
  66         u16 fw_min_ver;                 /* firmware minor version */
  67         u32 fw_build;                   /* firmware build number */
  68         u16 api_maj_ver;                /* api major version */
  69         u16 api_min_ver;                /* api minor version */
  70
  71         struct mutex asq_mutex; /* Send queue lock */
  72         struct mutex arq_mutex; /* Receive queue lock */
  73
  74         /* last status values on send and receive queues */
  75         enum iavf_admin_queue_err asq_last_status;
  76         enum iavf_admin_queue_err arq_last_status;
  77 };
  78
  79 /**
  80  * iavf_aq_rc_to_posix - convert errors to user-land codes
  81  * @aq_ret: AdminQ handler error code can override aq_rc
  82  * @aq_rc: AdminQ firmware error code to convert
  83  **/
  84 static inline int iavf_aq_rc_to_posix(int aq_ret, int aq_rc)
  85 {
  86         int aq_to_posix[] = {
  87                 0,           /* IAVF_AQ_RC_OK */
  88                 -EPERM,      /* IAVF_AQ_RC_EPERM */
  89                 -ENOENT,     /* IAVF_AQ_RC_ENOENT */
  90                 -ESRCH,      /* IAVF_AQ_RC_ESRCH */
  91                 -EINTR,      /* IAVF_AQ_RC_EINTR */
  92                 -EIO,        /* IAVF_AQ_RC_EIO */
  93                 -ENXIO,      /* IAVF_AQ_RC_ENXIO */
  94                 -E2BIG,      /* IAVF_AQ_RC_E2BIG */
  95                 -EAGAIN,     /* IAVF_AQ_RC_EAGAIN */
  96                 -ENOMEM,     /* IAVF_AQ_RC_ENOMEM */
  97                 -EACCES,     /* IAVF_AQ_RC_EACCES */
  98                 -EFAULT,     /* IAVF_AQ_RC_EFAULT */
  99                 -EBUSY,      /* IAVF_AQ_RC_EBUSY */
 100                 -EEXIST,     /* IAVF_AQ_RC_EEXIST */
 101                 -EINVAL,     /* IAVF_AQ_RC_EINVAL */
 102                 -ENOTTY,     /* IAVF_AQ_RC_ENOTTY */
 103                 -ENOSPC,     /* IAVF_AQ_RC_ENOSPC */
 104                 -ENOSYS,     /* IAVF_AQ_RC_ENOSYS */
 105                 -ERANGE,     /* IAVF_AQ_RC_ERANGE */
 106                 -EPIPE,      /* IAVF_AQ_RC_EFLUSHED */
 107                 -ESPIPE,     /* IAVF_AQ_RC_BAD_ADDR */
 108                 -EROFS,      /* IAVF_AQ_RC_EMODE */
 109                 -EFBIG,      /* IAVF_AQ_RC_EFBIG */
 110         };
 111
 112         /* aq_rc is invalid if AQ timed out */
 113         if (aq_ret == IAVF_ERR_ADMIN_QUEUE_TIMEOUT)
 114                 return -EAGAIN;
 115
 116         if (!((u32)aq_rc < (sizeof(aq_to_posix) / sizeof((aq_to_posix)[0]))))
 117                 return -ERANGE;
 118
 119         return aq_to_posix[aq_rc];
 120 }
 121
 122 /* general information */
 123 #define IAVF_AQ_LARGE_BUF       512
 124 #define IAVF_ASQ_CMD_TIMEOUT    250000  /* usecs */
 125
 126 void iavf_fill_default_direct_cmd_desc(struct iavf_aq_desc *desc, u16 opcode);
 127
 128 #endif /* _IAVF_ADMINQ_H_ */