LXR linux/drivers/net/ethernet/intel/iavf/iavf

   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
  16struct 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 */
  42struct 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 */
  56struct 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 */
  64struct 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 **/
  91static 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
 133void iavf_fill_default_direct_cmd_desc(struct iavf_aq_desc *desc, u16 opcode);
 134
 135#endif /* _IAVF_ADMINQ_H_ */
 136