ceph/src/spdk/dpdk/drivers/net/bnxt/tf_ulp/ulp_utils.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2014-2019 Broadcom
   3  * All rights reserved.
   4  */
   5
   6 #ifndef _ULP_UTILS_H_
   7 #define _ULP_UTILS_H_
   8
   9 #include "bnxt.h"
  10 #include "ulp_template_db.h"
  11
  12 /*
  13  * Macros for bitmap sets and gets
  14  * These macros can be used if the val are power of 2.
  15  */
  16 #define ULP_BITMAP_SET(bitmap, val)     ((bitmap) |= (val))
  17 #define ULP_BITMAP_RESET(bitmap, val)   ((bitmap) &= ~(val))
  18 #define ULP_BITMAP_ISSET(bitmap, val)   ((bitmap) & (val))
  19 #define ULP_BITMAP_CMP(b1, b2)  memcmp(&(b1)->bits, \
  20                                 &(b2)->bits, sizeof((b1)->bits))
  21 /*
  22  * Macros for bitmap sets and gets
  23  * These macros can be used if the val are not power of 2 and
  24  * are simple index values.
  25  */
  26 #define ULP_INDEX_BITMAP_SIZE   (sizeof(uint64_t) * 8)
  27 #define ULP_INDEX_BITMAP_CSET(i)        (1UL << \
  28                         ((ULP_INDEX_BITMAP_SIZE - 1) - \
  29                         ((i) % ULP_INDEX_BITMAP_SIZE)))
  30
  31 #define ULP_INDEX_BITMAP_SET(b, i)      ((b) |= \
  32                         (1UL << ((ULP_INDEX_BITMAP_SIZE - 1) - \
  33                         ((i) % ULP_INDEX_BITMAP_SIZE))))
  34
  35 #define ULP_INDEX_BITMAP_RESET(b, i)    ((b) &= \
  36                         (~(1UL << ((ULP_INDEX_BITMAP_SIZE - 1) - \
  37                         ((i) % ULP_INDEX_BITMAP_SIZE)))))
  38
  39 #define ULP_INDEX_BITMAP_GET(b, i)              (((b) >> \
  40                         ((ULP_INDEX_BITMAP_SIZE - 1) - \
  41                         ((i) % ULP_INDEX_BITMAP_SIZE))) & 1)
  42
  43 #define ULP_DEVICE_PARAMS_INDEX(tid, dev_id)    \
  44         (((tid) << BNXT_ULP_LOG2_MAX_NUM_DEV) | (dev_id))
  45
  46 /* Macro to convert bytes to bits */
  47 #define ULP_BYTE_2_BITS(byte_x)         ((byte_x) * 8)
  48 /* Macro to convert bits to bytes */
  49 #define ULP_BITS_2_BYTE(bits_x)         (((bits_x) + 7) / 8)
  50 /* Macro to convert bits to bytes with no round off*/
  51 #define ULP_BITS_2_BYTE_NR(bits_x)      ((bits_x) / 8)
  52
  53 /* Macros to read the computed fields */
  54 #define ULP_UTIL_CHF_IDX_RD(params, idx) \
  55         rte_be_to_cpu_32((params)->comp_fld[(idx)])
  56
  57 #define ULP_UTIL_CHF_IDX_WR(params, idx, val)   \
  58         ((params)->comp_fld[(idx)] = rte_cpu_to_be_32((val)))
  59 /*
  60  * Making the blob statically sized to 128 bytes for now.
  61  * The blob must be initialized with ulp_blob_init prior to using.
  62  */
  63 #define BNXT_ULP_FLMP_BLOB_SIZE (128)
  64 #define BNXT_ULP_FLMP_BLOB_SIZE_IN_BITS ULP_BYTE_2_BITS(BNXT_ULP_FLMP_BLOB_SIZE)
  65 struct ulp_blob {
  66         enum bnxt_ulp_byte_order        byte_order;
  67         uint16_t                        write_idx;
  68         uint16_t                        bitlen;
  69         uint8_t                         data[BNXT_ULP_FLMP_BLOB_SIZE];
  70         uint16_t                        encap_swap_idx;
  71 };
  72
  73 /*
  74  * The data can likely be only 32 bits for now.  Just size check
  75  * the data when being written.
  76  */
  77 #define ULP_REGFILE_ENTRY_SIZE  (sizeof(uint32_t))
  78 struct ulp_regfile_entry {
  79         uint64_t        data;
  80         uint32_t        size;
  81 };
  82
  83 struct ulp_regfile {
  84         struct ulp_regfile_entry entry[BNXT_ULP_REGFILE_INDEX_LAST];
  85 };
  86
  87 /*
  88  * Initialize the regfile structure for writing
  89  *
  90  * regfile [in] Ptr to a regfile instance
  91  *
  92  * returns 0 on error or 1 on success
  93  */
  94 uint32_t
  95 ulp_regfile_init(struct ulp_regfile *regfile);
  96
  97 /*
  98  * Read a value from the regfile
  99  *
 100  * regfile [in] The regfile instance.  Must be initialized prior to being used
 101  *
 102  * field [in] The field to be read within the regfile.
 103  *
 104  * returns the byte array
 105  */
 106 uint32_t
 107 ulp_regfile_read(struct ulp_regfile *regfile,
 108                  enum bnxt_ulp_regfile_index field,
 109                  uint64_t *data);
 110
 111 /*
 112  * Write a value to the regfile
 113  *
 114  * regfile [in] The regfile instance.  Must be initialized prior to being used
 115  *
 116  * field [in] The field to be written within the regfile.
 117  *
 118  * data [in] The value is written into this variable.  It is going to be in the
 119  * same byte order as it was written.
 120  *
 121  * returns zero on error
 122  */
 123 uint32_t
 124 ulp_regfile_write(struct ulp_regfile *regfile,
 125                   enum bnxt_ulp_regfile_index field,
 126                   uint64_t data);
 127
 128 /*
 129  * Initializes the blob structure for creating binary blob
 130  *
 131  * blob [in] The blob to be initialized
 132  *
 133  * bitlen [in] The bit length of the blob
 134  *
 135  * order [in] The byte order for the blob.  Currently only supporting
 136  * big endian.  All fields are packed with this order.
 137  *
 138  * returns 0 on error or 1 on success
 139  */
 140 uint32_t
 141 ulp_blob_init(struct ulp_blob *blob,
 142               uint16_t bitlen,
 143               enum bnxt_ulp_byte_order order);
 144
 145 /*
 146  * Add data to the binary blob at the current offset.
 147  *
 148  * blob [in] The blob that data is added to.  The blob must
 149  * be initialized prior to pushing data.
 150  *
 151  * data [in] A pointer to bytes to be added to the blob.
 152  *
 153  * datalen [in] The number of bits to be added to the blob.
 154  *
 155  * The offset of the data is updated after each push of data.
 156  * NULL returned on error.
 157  */
 158 uint32_t
 159 ulp_blob_push(struct ulp_blob *blob,
 160               uint8_t *data,
 161               uint32_t datalen);
 162
 163 /*
 164  * Add data to the binary blob at the current offset.
 165  *
 166  * blob [in] The blob that data is added to.  The blob must
 167  * be initialized prior to pushing data.
 168  *
 169  * data [in] 64-bit value to be added to the blob.
 170  *
 171  * datalen [in] The number of bits to be added to the blob.
 172  *
 173  * The offset of the data is updated after each push of data.
 174  * NULL returned on error, ptr to pushed data otherwise
 175  */
 176 uint8_t *
 177 ulp_blob_push_64(struct ulp_blob *blob,
 178                  uint64_t *data,
 179                  uint32_t datalen);
 180
 181 /*
 182  * Add encap data to the binary blob at the current offset.
 183  *
 184  * blob [in] The blob that data is added to.  The blob must
 185  * be initialized prior to pushing data.
 186  *
 187  * data [in] value to be added to the blob.
 188  *
 189  * datalen [in] The number of bits to be added to the blob.
 190  *
 191  * The offset of the data is updated after each push of data.
 192  * NULL returned on error, pointer pushed value otherwise.
 193  */
 194 uint32_t
 195 ulp_blob_push_encap(struct ulp_blob *blob,
 196                     uint8_t *data,
 197                     uint32_t datalen);
 198
 199 /*
 200  * Get the data portion of the binary blob.
 201  *
 202  * blob [in] The blob's data to be retrieved. The blob must be
 203  * initialized prior to pushing data.
 204  *
 205  * datalen [out] The number of bits to that are filled.
 206  *
 207  * returns a byte array of the blob data.  Returns NULL on error.
 208  */
 209 uint8_t *
 210 ulp_blob_data_get(struct ulp_blob *blob,
 211                   uint16_t *datalen);
 212
 213 /*
 214  * Adds pad to an initialized blob at the current offset
 215  *
 216  * blob [in] The blob that data is added to.  The blob must
 217  * be initialized prior to pushing data.
 218  *
 219  * datalen [in] The number of bits of pad to add
 220  *
 221  * returns the number of pad bits added, zero on failure
 222  */
 223 uint32_t
 224 ulp_blob_pad_push(struct ulp_blob *blob,
 225                   uint32_t datalen);
 226
 227 /*
 228  * Set the 64 bit swap start index of the binary blob.
 229  *
 230  * blob [in] The blob's data to be retrieved. The blob must be
 231  * initialized prior to pushing data.
 232  *
 233  * returns void.
 234  */
 235 void
 236 ulp_blob_encap_swap_idx_set(struct ulp_blob *blob);
 237
 238 /*
 239  * Perform the encap buffer swap to 64 bit reversal.
 240  *
 241  * blob [in] The blob's data to be used for swap.
 242  *
 243  * returns void.
 244  */
 245 void
 246 ulp_blob_perform_encap_swap(struct ulp_blob *blob);
 247
 248 /*
 249  * Read data from the operand
 250  *
 251  * operand [in] A pointer to a 16 Byte operand
 252  *
 253  * val [in/out] The variable to copy the operand to
 254  *
 255  * bitlen [in] The number of bits to read into val
 256  *
 257  * returns number of bits read, zero on error
 258  */
 259 uint16_t
 260 ulp_operand_read(uint8_t *operand,
 261                  uint8_t *val,
 262                  uint16_t bitlen);
 263
 264 /*
 265  * copy the buffer in the encap format which is 2 bytes.
 266  * The MSB of the src is placed at the LSB of dst.
 267  *
 268  * dst [out] The destination buffer
 269  * src [in] The source buffer dst
 270  * size[in] size of the buffer.
 271  */
 272 void
 273 ulp_encap_buffer_copy(uint8_t *dst,
 274                       const uint8_t *src,
 275                       uint16_t size);
 276
 277 /*
 278  * Check the buffer is empty
 279  *
 280  * buf [in] The buffer
 281  * size [in] The size of the buffer
 282  */
 283 int32_t ulp_buffer_is_empty(const uint8_t *buf, uint32_t size);
 284
 285 /* Function to check if bitmap is zero.Return 1 on success */
 286 uint32_t ulp_bitmap_is_zero(uint8_t *bitmap, int32_t size);
 287
 288 /* Function to check if bitmap is ones. Return 1 on success */
 289 uint32_t ulp_bitmap_is_ones(uint8_t *bitmap, int32_t size);
 290
 291 /* Function to check if bitmap is not zero. Return 1 on success */
 292 uint32_t ulp_bitmap_notzero(uint8_t *bitmap, int32_t size);
 293
 294 #endif /* _ULP_UTILS_H_ */