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         /* used for queue tracking */
  34         u32 head;
  35         u32 tail;
  36         u32 len;
  37         u32 bah;
  38         u32 bal;
  39 };
  40
  41 /* ASQ transaction details */
  42 struct iavf_asq_cmd_details {
  43         void *callback; /* cast from type IAVF_ADMINQ_CALLBACK */
  44         u64 cookie;
  45         u16 flags_ena;
  46         u16 flags_dis;
  47         bool async;
  48         bool postpone;
  49         struct iavf_aq_desc *wb_desc;
  50 };
  51
  52 #define IAVF_ADMINQ_DETAILS(R, i)   \
  53         (&(((struct iavf_asq_cmd_details *)((R).cmd_buf.va))[i]))
  54
  55 /* ARQ event information */
  56 struct iavf_arq_event_info {
  57         struct iavf_aq_desc desc;
  58         u16 msg_len;
  59         u16 buf_len;
  60         u8 *msg_buf;
  61 };
  62
  63 /* Admin Queue information */
  64 struct iavf_adminq_info {
  65         struct iavf_adminq_ring arq;    /* receive queue */
  66         struct iavf_adminq_ring asq;    /* send queue */
  67         u32 asq_cmd_timeout;            /* send queue cmd write back timeout*/
  68         u16 num_arq_entries;            /* receive queue depth */
  69         u16 num_asq_entries;            /* send queue depth */
  70         u16 arq_buf_size;               /* receive queue buffer size */
  71         u16 asq_buf_size;               /* send queue buffer size */
  72         u16 fw_maj_ver;                 /* firmware major version */
  73         u16 fw_min_ver;                 /* firmware minor version */
  74         u32 fw_build;                   /* firmware build number */
  75         u16 api_maj_ver;                /* api major version */
  76         u16 api_min_ver;                /* api minor version */
  77
  78         struct mutex asq_mutex; /* Send queue lock */
  79         struct mutex arq_mutex; /* Receive queue lock */
  80
  81         /* last status values on send and receive queues */
  82         enum iavf_admin_queue_err asq_last_status;
  83         enum iavf_admin_queue_err arq_last_status;
  84 };
  85
  86 /**
  87  * iavf_aq_rc_to_posix - convert errors to user-land codes
  88  * aq_ret: AdminQ handler error code can override aq_rc
  89  * aq_rc: AdminQ firmware error code to convert
  90  **/
  91 static inline int iavf_aq_rc_to_posix(int aq_ret, int aq_rc)
  92 {
  93         int aq_to_posix[] = {
  94                 0,           /* IAVF_AQ_RC_OK */
  95                 -EPERM,      /* IAVF_AQ_RC_EPERM */
  96                 -ENOENT,     /* IAVF_AQ_RC_ENOENT */
  97                 -ESRCH,      /* IAVF_AQ_RC_ESRCH */
  98                 -EINTR,      /* IAVF_AQ_RC_EINTR */
  99                 -EIO,        /* IAVF_AQ_RC_EIO */
 100                 -ENXIO,      /* IAVF_AQ_RC_ENXIO */
 101                 -E2BIG,      /* IAVF_AQ_RC_E2BIG */
 102                 -EAGAIN,     /* IAVF_AQ_RC_EAGAIN */
 103                 -ENOMEM,     /* IAVF_AQ_RC_ENOMEM */
 104                 -EACCES,     /* IAVF_AQ_RC_EACCES */
 105                 -EFAULT,     /* IAVF_AQ_RC_EFAULT */
 106                 -EBUSY,      /* IAVF_AQ_RC_EBUSY */
 107                 -EEXIST,     /* IAVF_AQ_RC_EEXIST */
 108                 -EINVAL,     /* IAVF_AQ_RC_EINVAL */
 109                 -ENOTTY,     /* IAVF_AQ_RC_ENOTTY */
 110                 -ENOSPC,     /* IAVF_AQ_RC_ENOSPC */
 111                 -ENOSYS,     /* IAVF_AQ_RC_ENOSYS */
 112                 -ERANGE,     /* IAVF_AQ_RC_ERANGE */
 113                 -EPIPE,      /* IAVF_AQ_RC_EFLUSHED */
 114                 -ESPIPE,     /* IAVF_AQ_RC_BAD_ADDR */
 115                 -EROFS,      /* IAVF_AQ_RC_EMODE */
 116                 -EFBIG,      /* IAVF_AQ_RC_EFBIG */
 117         };
 118
 119         /* aq_rc is invalid if AQ timed out */
 120         if (aq_ret == IAVF_ERR_ADMIN_QUEUE_TIMEOUT)
 121                 return -EAGAIN;
 122
 123         if (!((u32)aq_rc < (sizeof(aq_to_posix) / sizeof((aq_to_posix)[0]))))
 124                 return -ERANGE;
 125
 126         return aq_to_posix[aq_rc];
 127 }
 128
 129 /* general information */
 130 #define IAVF_AQ_LARGE_BUF       512
 131 #define IAVF_ASQ_CMD_TIMEOUT    250000  /* usecs */
 132
 133 void iavf_fill_default_direct_cmd_desc(struct iavf_aq_desc *desc, u16 opcode);
 134
 135 #endif /* _IAVF_ADMINQ_H_ */