1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(C) 2020 Broadcom.
6 #include "bcmfs_hw_defs.h"
7 #include "bcmfs_rm_common.h"
9 /* Completion descriptor format */
10 #define FS_CMPL_OPAQUE_SHIFT 0
11 #define FS_CMPL_OPAQUE_MASK 0xffff
12 #define FS_CMPL_ENGINE_STATUS_SHIFT 16
13 #define FS_CMPL_ENGINE_STATUS_MASK 0xffff
14 #define FS_CMPL_DME_STATUS_SHIFT 32
15 #define FS_CMPL_DME_STATUS_MASK 0xffff
16 #define FS_CMPL_RM_STATUS_SHIFT 48
17 #define FS_CMPL_RM_STATUS_MASK 0xffff
18 /* Completion RM status code */
19 #define FS_RM_STATUS_CODE_SHIFT 0
20 #define FS_RM_STATUS_CODE_MASK 0x3ff
21 #define FS_RM_STATUS_CODE_GOOD 0x0
22 #define FS_RM_STATUS_CODE_AE_TIMEOUT 0x3ff
25 /* Completion DME status code */
26 #define FS_DME_STATUS_MEM_COR_ERR BIT(0)
27 #define FS_DME_STATUS_MEM_UCOR_ERR BIT(1)
28 #define FS_DME_STATUS_FIFO_UNDRFLOW BIT(2)
29 #define FS_DME_STATUS_FIFO_OVERFLOW BIT(3)
30 #define FS_DME_STATUS_RRESP_ERR BIT(4)
31 #define FS_DME_STATUS_BRESP_ERR BIT(5)
32 #define FS_DME_STATUS_ERROR_MASK (FS_DME_STATUS_MEM_COR_ERR | \
33 FS_DME_STATUS_MEM_UCOR_ERR | \
34 FS_DME_STATUS_FIFO_UNDRFLOW | \
35 FS_DME_STATUS_FIFO_OVERFLOW | \
36 FS_DME_STATUS_RRESP_ERR | \
37 FS_DME_STATUS_BRESP_ERR)
39 /* APIs related to ring manager descriptors */
41 rm_build_desc(uint64_t val, uint32_t shift,
44 return((val & mask) << shift);
48 rm_read_desc(void *desc_ptr)
50 return le64_to_cpu(*((uint64_t *)desc_ptr));
54 rm_write_desc(void *desc_ptr, uint64_t desc)
56 *((uint64_t *)desc_ptr) = cpu_to_le64(desc);
60 rm_cmpl_desc_to_reqid(uint64_t cmpl_desc)
62 return (uint32_t)(cmpl_desc & FS_CMPL_OPAQUE_MASK);
66 rm_cmpl_desc_to_error(uint64_t cmpl_desc)
70 status = FS_DESC_DEC(cmpl_desc, FS_CMPL_DME_STATUS_SHIFT,
71 FS_CMPL_DME_STATUS_MASK);
72 if (status & FS_DME_STATUS_ERROR_MASK)
75 status = FS_DESC_DEC(cmpl_desc, FS_CMPL_RM_STATUS_SHIFT,
76 FS_CMPL_RM_STATUS_MASK);
77 status &= FS_RM_STATUS_CODE_MASK;
78 if (status == FS_RM_STATUS_CODE_AE_TIMEOUT)