lpfc_scsi.h 5.8 KB

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  1. /*******************************************************************
  2. * This file is part of the Emulex Linux Device Driver for *
  3. * Fibre Channel Host Bus Adapters. *
  4. * Copyright (C) 2004-2012 Emulex. All rights reserved. *
  5. * EMULEX and SLI are trademarks of Emulex. *
  6. * www.emulex.com *
  7. * *
  8. * This program is free software; you can redistribute it and/or *
  9. * modify it under the terms of version 2 of the GNU General *
  10. * Public License as published by the Free Software Foundation. *
  11. * This program is distributed in the hope that it will be useful. *
  12. * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
  13. * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
  14. * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
  15. * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  16. * TO BE LEGALLY INVALID. See the GNU General Public License for *
  17. * more details, a copy of which can be found in the file COPYING *
  18. * included with this package. *
  19. *******************************************************************/
  20. #include <asm/byteorder.h>
  21. struct lpfc_hba;
  22. #define LPFC_FCP_CDB_LEN 16
  23. #define list_remove_head(list, entry, type, member) \
  24. do { \
  25. entry = NULL; \
  26. if (!list_empty(list)) { \
  27. entry = list_entry((list)->next, type, member); \
  28. list_del_init(&entry->member); \
  29. } \
  30. } while(0)
  31. #define list_get_first(list, type, member) \
  32. (list_empty(list)) ? NULL : \
  33. list_entry((list)->next, type, member)
  34. /* per-port data that is allocated in the FC transport for us */
  35. struct lpfc_rport_data {
  36. struct lpfc_nodelist *pnode; /* Pointer to the node structure. */
  37. };
  38. struct fcp_rsp {
  39. uint32_t rspRsvd1; /* FC Word 0, byte 0:3 */
  40. uint32_t rspRsvd2; /* FC Word 1, byte 0:3 */
  41. uint8_t rspStatus0; /* FCP_STATUS byte 0 (reserved) */
  42. uint8_t rspStatus1; /* FCP_STATUS byte 1 (reserved) */
  43. uint8_t rspStatus2; /* FCP_STATUS byte 2 field validity */
  44. #define RSP_LEN_VALID 0x01 /* bit 0 */
  45. #define SNS_LEN_VALID 0x02 /* bit 1 */
  46. #define RESID_OVER 0x04 /* bit 2 */
  47. #define RESID_UNDER 0x08 /* bit 3 */
  48. uint8_t rspStatus3; /* FCP_STATUS byte 3 SCSI status byte */
  49. uint32_t rspResId; /* Residual xfer if residual count field set in
  50. fcpStatus2 */
  51. /* Received in Big Endian format */
  52. uint32_t rspSnsLen; /* Length of sense data in fcpSnsInfo */
  53. /* Received in Big Endian format */
  54. uint32_t rspRspLen; /* Length of FCP response data in fcpRspInfo */
  55. /* Received in Big Endian format */
  56. uint8_t rspInfo0; /* FCP_RSP_INFO byte 0 (reserved) */
  57. uint8_t rspInfo1; /* FCP_RSP_INFO byte 1 (reserved) */
  58. uint8_t rspInfo2; /* FCP_RSP_INFO byte 2 (reserved) */
  59. uint8_t rspInfo3; /* FCP_RSP_INFO RSP_CODE byte 3 */
  60. #define RSP_NO_FAILURE 0x00
  61. #define RSP_DATA_BURST_ERR 0x01
  62. #define RSP_CMD_FIELD_ERR 0x02
  63. #define RSP_RO_MISMATCH_ERR 0x03
  64. #define RSP_TM_NOT_SUPPORTED 0x04 /* Task mgmt function not supported */
  65. #define RSP_TM_NOT_COMPLETED 0x05 /* Task mgmt function not performed */
  66. uint32_t rspInfoRsvd; /* FCP_RSP_INFO bytes 4-7 (reserved) */
  67. uint8_t rspSnsInfo[128];
  68. #define SNS_ILLEGAL_REQ 0x05 /* sense key is byte 3 ([2]) */
  69. #define SNSCOD_BADCMD 0x20 /* sense code is byte 13 ([12]) */
  70. };
  71. struct fcp_cmnd {
  72. struct scsi_lun fcp_lun;
  73. uint8_t fcpCntl0; /* FCP_CNTL byte 0 (reserved) */
  74. uint8_t fcpCntl1; /* FCP_CNTL byte 1 task codes */
  75. #define SIMPLE_Q 0x00
  76. #define HEAD_OF_Q 0x01
  77. #define ORDERED_Q 0x02
  78. #define ACA_Q 0x04
  79. #define UNTAGGED 0x05
  80. uint8_t fcpCntl2; /* FCP_CTL byte 2 task management codes */
  81. #define FCP_ABORT_TASK_SET 0x02 /* Bit 1 */
  82. #define FCP_CLEAR_TASK_SET 0x04 /* bit 2 */
  83. #define FCP_BUS_RESET 0x08 /* bit 3 */
  84. #define FCP_LUN_RESET 0x10 /* bit 4 */
  85. #define FCP_TARGET_RESET 0x20 /* bit 5 */
  86. #define FCP_CLEAR_ACA 0x40 /* bit 6 */
  87. #define FCP_TERMINATE_TASK 0x80 /* bit 7 */
  88. uint8_t fcpCntl3;
  89. #define WRITE_DATA 0x01 /* Bit 0 */
  90. #define READ_DATA 0x02 /* Bit 1 */
  91. uint8_t fcpCdb[LPFC_FCP_CDB_LEN]; /* SRB cdb field is copied here */
  92. uint32_t fcpDl; /* Total transfer length */
  93. };
  94. struct lpfc_scsicmd_bkt {
  95. uint32_t cmd_count;
  96. };
  97. struct lpfc_scsi_buf {
  98. struct list_head list;
  99. struct scsi_cmnd *pCmd;
  100. struct lpfc_rport_data *rdata;
  101. uint32_t timeout;
  102. uint16_t exch_busy; /* SLI4 hba reported XB on complete WCQE */
  103. uint16_t status; /* From IOCB Word 7- ulpStatus */
  104. uint32_t result; /* From IOCB Word 4. */
  105. uint32_t seg_cnt; /* Number of scatter-gather segments returned by
  106. * dma_map_sg. The driver needs this for calls
  107. * to dma_unmap_sg. */
  108. uint32_t prot_seg_cnt; /* seg_cnt's counterpart for protection data */
  109. dma_addr_t nonsg_phys; /* Non scatter-gather physical address. */
  110. /*
  111. * data and dma_handle are the kernel virtual and bus address of the
  112. * dma-able buffer containing the fcp_cmd, fcp_rsp and a scatter
  113. * gather bde list that supports the sg_tablesize value.
  114. */
  115. void *data;
  116. dma_addr_t dma_handle;
  117. struct fcp_cmnd *fcp_cmnd;
  118. struct fcp_rsp *fcp_rsp;
  119. struct ulp_bde64 *fcp_bpl;
  120. dma_addr_t dma_phys_bpl;
  121. /* cur_iocbq has phys of the dma-able buffer.
  122. * Iotag is in here
  123. */
  124. struct lpfc_iocbq cur_iocbq;
  125. wait_queue_head_t *waitq;
  126. unsigned long start_time;
  127. #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
  128. /* Used to restore any changes to protection data for error injection */
  129. void *prot_data_segment;
  130. uint32_t prot_data;
  131. uint32_t prot_data_type;
  132. #define LPFC_INJERR_REFTAG 1
  133. #define LPFC_INJERR_APPTAG 2
  134. #define LPFC_INJERR_GUARD 3
  135. #endif
  136. };
  137. #define LPFC_SCSI_DMA_EXT_SIZE 264
  138. #define LPFC_BPL_SIZE 1024
  139. #define MDAC_DIRECT_CMD 0x22