drivers/net/ethernet/qlogic/qed/qed_dev_api.h

   1 /* QLogic qed NIC Driver
   2  * Copyright (c) 2015 QLogic Corporation
   3  *
   4  * This software is available under the terms of the GNU General Public License
   5  * (GPL) Version 2, available from the file COPYING in the main directory of
   6  * this source tree.
   7  */
   8
   9 #ifndef _QED_DEV_API_H
  10 #define _QED_DEV_API_H
  11
  12 #include <linux/types.h>
  13 #include <linux/kernel.h>
  14 #include <linux/slab.h>
  15 #include <linux/qed/qed_chain.h>
  16 #include <linux/qed/qed_if.h>
  17 #include "qed_int.h"
  18
  19 /**
  20  * @brief qed_init_dp - initialize the debug level
  21  *
  22  * @param cdev
  23  * @param dp_module
  24  * @param dp_level
  25  */
  26 void qed_init_dp(struct qed_dev *cdev,
  27                  u32 dp_module,
  28                  u8 dp_level);
  29
  30 /**
  31  * @brief qed_init_struct - initialize the device structure to
  32  *        its defaults
  33  *
  34  * @param cdev
  35  */
  36 void qed_init_struct(struct qed_dev *cdev);
  37
  38 /**
  39  * @brief qed_resc_free -
  40  *
  41  * @param cdev
  42  */
  43 void qed_resc_free(struct qed_dev *cdev);
  44
  45 /**
  46  * @brief qed_resc_alloc -
  47  *
  48  * @param cdev
  49  *
  50  * @return int
  51  */
  52 int qed_resc_alloc(struct qed_dev *cdev);
  53
  54 /**
  55  * @brief qed_resc_setup -
  56  *
  57  * @param cdev
  58  */
  59 void qed_resc_setup(struct qed_dev *cdev);
  60
  61 /**
  62  * @brief qed_hw_init -
  63  *
  64  * @param cdev
  65  * @param b_hw_start
  66  * @param int_mode - interrupt mode [msix, inta, etc.] to use.
  67  * @param allow_npar_tx_switch - npar tx switching to be used
  68  *        for vports configured for tx-switching.
  69  * @param bin_fw_data - binary fw data pointer in binary fw file.
  70  *                      Pass NULL if not using binary fw file.
  71  *
  72  * @return int
  73  */
  74 int qed_hw_init(struct qed_dev *cdev,
  75                 bool b_hw_start,
  76                 enum qed_int_mode int_mode,
  77                 bool allow_npar_tx_switch,
  78                 const u8 *bin_fw_data);
  79
  80 /**
  81  * @brief qed_hw_stop -
  82  *
  83  * @param cdev
  84  *
  85  * @return int
  86  */
  87 int qed_hw_stop(struct qed_dev *cdev);
  88
  89 /**
  90  * @brief qed_hw_stop_fastpath -should be called incase
  91  *              slowpath is still required for the device,
  92  *              but fastpath is not.
  93  *
  94  * @param cdev
  95  *
  96  */
  97 void qed_hw_stop_fastpath(struct qed_dev *cdev);
  98
  99 /**
 100  * @brief qed_hw_start_fastpath -restart fastpath traffic,
 101  *              only if hw_stop_fastpath was called
 102  *
 103  * @param cdev
 104  *
 105  */
 106 void qed_hw_start_fastpath(struct qed_hwfn *p_hwfn);
 107
 108 /**
 109  * @brief qed_hw_reset -
 110  *
 111  * @param cdev
 112  *
 113  * @return int
 114  */
 115 int qed_hw_reset(struct qed_dev *cdev);
 116
 117 /**
 118  * @brief qed_hw_prepare -
 119  *
 120  * @param cdev
 121  * @param personality - personality to initialize
 122  *
 123  * @return int
 124  */
 125 int qed_hw_prepare(struct qed_dev *cdev,
 126                    int personality);
 127
 128 /**
 129  * @brief qed_hw_remove -
 130  *
 131  * @param cdev
 132  */
 133 void qed_hw_remove(struct qed_dev *cdev);
 134
 135 /**
 136  * @brief qed_ptt_acquire - Allocate a PTT window
 137  *
 138  * Should be called at the entry point to the driver (at the beginning of an
 139  * exported function)
 140  *
 141  * @param p_hwfn
 142  *
 143  * @return struct qed_ptt
 144  */
 145 struct qed_ptt *qed_ptt_acquire(struct qed_hwfn *p_hwfn);
 146
 147 /**
 148  * @brief qed_ptt_release - Release PTT Window
 149  *
 150  * Should be called at the end of a flow - at the end of the function that
 151  * acquired the PTT.
 152  *
 153  *
 154  * @param p_hwfn
 155  * @param p_ptt
 156  */
 157 void qed_ptt_release(struct qed_hwfn *p_hwfn,
 158                      struct qed_ptt *p_ptt);
 159 void qed_get_vport_stats(struct qed_dev *cdev,
 160                          struct qed_eth_stats   *stats);
 161 void qed_reset_vport_stats(struct qed_dev *cdev);
 162
 163 enum qed_dmae_address_type_t {
 164         QED_DMAE_ADDRESS_HOST_VIRT,
 165         QED_DMAE_ADDRESS_HOST_PHYS,
 166         QED_DMAE_ADDRESS_GRC
 167 };
 168
 169 /* value of flags If QED_DMAE_FLAG_RW_REPL_SRC flag is set and the
 170  * source is a block of length DMAE_MAX_RW_SIZE and the
 171  * destination is larger, the source block will be duplicated as
 172  * many times as required to fill the destination block. This is
 173  * used mostly to write a zeroed buffer to destination address
 174  * using DMA
 175  */
 176 #define QED_DMAE_FLAG_RW_REPL_SRC       0x00000001
 177 #define QED_DMAE_FLAG_COMPLETION_DST    0x00000008
 178
 179 struct qed_dmae_params {
 180         u32     flags; /* consists of QED_DMAE_FLAG_* values */
 181 };
 182
 183 /**
 184  * @brief qed_dmae_host2grc - copy data from source addr to
 185  * dmae registers using the given ptt
 186  *
 187  * @param p_hwfn
 188  * @param p_ptt
 189  * @param source_addr
 190  * @param grc_addr (dmae_data_offset)
 191  * @param size_in_dwords
 192  * @param flags (one of the flags defined above)
 193  */
 194 int
 195 qed_dmae_host2grc(struct qed_hwfn *p_hwfn,
 196                   struct qed_ptt *p_ptt,
 197                   u64 source_addr,
 198                   u32 grc_addr,
 199                   u32 size_in_dwords,
 200                   u32 flags);
 201
 202 /**
 203  * @brief qed_chain_alloc - Allocate and initialize a chain
 204  *
 205  * @param p_hwfn
 206  * @param intended_use
 207  * @param mode
 208  * @param num_elems
 209  * @param elem_size
 210  * @param p_chain
 211  *
 212  * @return int
 213  */
 214 int
 215 qed_chain_alloc(struct qed_dev *cdev,
 216                 enum qed_chain_use_mode intended_use,
 217                 enum qed_chain_mode mode,
 218                 u16 num_elems,
 219                 size_t elem_size,
 220                 struct qed_chain *p_chain);
 221
 222 /**
 223  * @brief qed_chain_free - Free chain DMA memory
 224  *
 225  * @param p_hwfn
 226  * @param p_chain
 227  */
 228 void qed_chain_free(struct qed_dev *cdev,
 229                     struct qed_chain *p_chain);
 230
 231 /**
 232  * @@brief qed_fw_l2_queue - Get absolute L2 queue ID
 233  *
 234  *  @param p_hwfn
 235  *  @param src_id - relative to p_hwfn
 236  *  @param dst_id - absolute per engine
 237  *
 238  *  @return int
 239  */
 240 int qed_fw_l2_queue(struct qed_hwfn *p_hwfn,
 241                     u16 src_id,
 242                     u16 *dst_id);
 243
 244 /**
 245  * @@brief qed_fw_vport - Get absolute vport ID
 246  *
 247  *  @param p_hwfn
 248  *  @param src_id - relative to p_hwfn
 249  *  @param dst_id - absolute per engine
 250  *
 251  *  @return int
 252  */
 253 int qed_fw_vport(struct qed_hwfn *p_hwfn,
 254                  u8 src_id,
 255                  u8 *dst_id);
 256
 257 /**
 258  * @@brief qed_fw_rss_eng - Get absolute RSS engine ID
 259  *
 260  *  @param p_hwfn
 261  *  @param src_id - relative to p_hwfn
 262  *  @param dst_id - absolute per engine
 263  *
 264  *  @return int
 265  */
 266 int qed_fw_rss_eng(struct qed_hwfn *p_hwfn,
 267                    u8 src_id,
 268                    u8 *dst_id);
 269
 270 /**
 271  * *@brief Cleanup of previous driver remains prior to load
 272  *
 273  * @param p_hwfn
 274  * @param p_ptt
 275  * @param id - For PF, engine-relative. For VF, PF-relative.
 276  *
 277  * @return int
 278  */
 279 int qed_final_cleanup(struct qed_hwfn *p_hwfn,
 280                       struct qed_ptt *p_ptt,
 281                       u16 id);
 282
 283 #endif