/include/linux/mlx4/cq.h

https://github.com/airy09/android_kernel_sony_apq8064 · C Header · 150 lines · 95 code · 20 blank · 35 comment · 0 complexity · ae87b07570fcbcadf09d6302e438d801 MD5 · raw file

  1. /*
  2. * Copyright (c) 2007 Cisco Systems, Inc. All rights reserved.
  3. *
  4. * This software is available to you under a choice of one of two
  5. * licenses. You may choose to be licensed under the terms of the GNU
  6. * General Public License (GPL) Version 2, available from the file
  7. * COPYING in the main directory of this source tree, or the
  8. * OpenIB.org BSD license below:
  9. *
  10. * Redistribution and use in source and binary forms, with or
  11. * without modification, are permitted provided that the following
  12. * conditions are met:
  13. *
  14. * - Redistributions of source code must retain the above
  15. * copyright notice, this list of conditions and the following
  16. * disclaimer.
  17. *
  18. * - Redistributions in binary form must reproduce the above
  19. * copyright notice, this list of conditions and the following
  20. * disclaimer in the documentation and/or other materials
  21. * provided with the distribution.
  22. *
  23. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24. * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25. * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26. * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27. * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28. * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29. * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30. * SOFTWARE.
  31. */
  32. #ifndef MLX4_CQ_H
  33. #define MLX4_CQ_H
  34. #include <linux/types.h>
  35. #include <linux/mlx4/device.h>
  36. #include <linux/mlx4/doorbell.h>
  37. struct mlx4_cqe {
  38. __be32 vlan_my_qpn;
  39. __be32 immed_rss_invalid;
  40. __be32 g_mlpath_rqpn;
  41. __be16 sl_vid;
  42. __be16 rlid;
  43. __be16 status;
  44. u8 ipv6_ext_mask;
  45. u8 badfcs_enc;
  46. __be32 byte_cnt;
  47. __be16 wqe_index;
  48. __be16 checksum;
  49. u8 reserved[3];
  50. u8 owner_sr_opcode;
  51. };
  52. struct mlx4_err_cqe {
  53. __be32 my_qpn;
  54. u32 reserved1[5];
  55. __be16 wqe_index;
  56. u8 vendor_err_syndrome;
  57. u8 syndrome;
  58. u8 reserved2[3];
  59. u8 owner_sr_opcode;
  60. };
  61. enum {
  62. MLX4_CQE_VLAN_PRESENT_MASK = 1 << 29,
  63. MLX4_CQE_QPN_MASK = 0xffffff,
  64. };
  65. enum {
  66. MLX4_CQE_OWNER_MASK = 0x80,
  67. MLX4_CQE_IS_SEND_MASK = 0x40,
  68. MLX4_CQE_OPCODE_MASK = 0x1f
  69. };
  70. enum {
  71. MLX4_CQE_SYNDROME_LOCAL_LENGTH_ERR = 0x01,
  72. MLX4_CQE_SYNDROME_LOCAL_QP_OP_ERR = 0x02,
  73. MLX4_CQE_SYNDROME_LOCAL_PROT_ERR = 0x04,
  74. MLX4_CQE_SYNDROME_WR_FLUSH_ERR = 0x05,
  75. MLX4_CQE_SYNDROME_MW_BIND_ERR = 0x06,
  76. MLX4_CQE_SYNDROME_BAD_RESP_ERR = 0x10,
  77. MLX4_CQE_SYNDROME_LOCAL_ACCESS_ERR = 0x11,
  78. MLX4_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR = 0x12,
  79. MLX4_CQE_SYNDROME_REMOTE_ACCESS_ERR = 0x13,
  80. MLX4_CQE_SYNDROME_REMOTE_OP_ERR = 0x14,
  81. MLX4_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR = 0x15,
  82. MLX4_CQE_SYNDROME_RNR_RETRY_EXC_ERR = 0x16,
  83. MLX4_CQE_SYNDROME_REMOTE_ABORTED_ERR = 0x22,
  84. };
  85. enum {
  86. MLX4_CQE_STATUS_IPV4 = 1 << 6,
  87. MLX4_CQE_STATUS_IPV4F = 1 << 7,
  88. MLX4_CQE_STATUS_IPV6 = 1 << 8,
  89. MLX4_CQE_STATUS_IPV4OPT = 1 << 9,
  90. MLX4_CQE_STATUS_TCP = 1 << 10,
  91. MLX4_CQE_STATUS_UDP = 1 << 11,
  92. MLX4_CQE_STATUS_IPOK = 1 << 12,
  93. };
  94. enum {
  95. MLX4_CQE_LLC = 1,
  96. MLX4_CQE_SNAP = 1 << 1,
  97. MLX4_CQE_BAD_FCS = 1 << 4,
  98. };
  99. static inline void mlx4_cq_arm(struct mlx4_cq *cq, u32 cmd,
  100. void __iomem *uar_page,
  101. spinlock_t *doorbell_lock)
  102. {
  103. __be32 doorbell[2];
  104. u32 sn;
  105. u32 ci;
  106. sn = cq->arm_sn & 3;
  107. ci = cq->cons_index & 0xffffff;
  108. *cq->arm_db = cpu_to_be32(sn << 28 | cmd | ci);
  109. /*
  110. * Make sure that the doorbell record in host memory is
  111. * written before ringing the doorbell via PCI MMIO.
  112. */
  113. wmb();
  114. doorbell[0] = cpu_to_be32(sn << 28 | cmd | cq->cqn);
  115. doorbell[1] = cpu_to_be32(ci);
  116. mlx4_write64(doorbell, uar_page + MLX4_CQ_DOORBELL, doorbell_lock);
  117. }
  118. static inline void mlx4_cq_set_ci(struct mlx4_cq *cq)
  119. {
  120. *cq->set_ci_db = cpu_to_be32(cq->cons_index & 0xffffff);
  121. }
  122. enum {
  123. MLX4_CQ_DB_REQ_NOT_SOL = 1 << 24,
  124. MLX4_CQ_DB_REQ_NOT = 2 << 24
  125. };
  126. int mlx4_cq_modify(struct mlx4_dev *dev, struct mlx4_cq *cq,
  127. u16 count, u16 period);
  128. int mlx4_cq_resize(struct mlx4_dev *dev, struct mlx4_cq *cq,
  129. int entries, struct mlx4_mtt *mtt);
  130. #endif /* MLX4_CQ_H */