mirror of https://github.com/F-Stack/f-stack.git
83 lines
2.1 KiB
C
83 lines
2.1 KiB
C
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/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(C) 2020 Broadcom.
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* All rights reserved.
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*/
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#include "bcmfs_hw_defs.h"
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#include "bcmfs_rm_common.h"
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/* Completion descriptor format */
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#define FS_CMPL_OPAQUE_SHIFT 0
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#define FS_CMPL_OPAQUE_MASK 0xffff
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#define FS_CMPL_ENGINE_STATUS_SHIFT 16
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#define FS_CMPL_ENGINE_STATUS_MASK 0xffff
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#define FS_CMPL_DME_STATUS_SHIFT 32
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#define FS_CMPL_DME_STATUS_MASK 0xffff
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#define FS_CMPL_RM_STATUS_SHIFT 48
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#define FS_CMPL_RM_STATUS_MASK 0xffff
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/* Completion RM status code */
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#define FS_RM_STATUS_CODE_SHIFT 0
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#define FS_RM_STATUS_CODE_MASK 0x3ff
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#define FS_RM_STATUS_CODE_GOOD 0x0
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#define FS_RM_STATUS_CODE_AE_TIMEOUT 0x3ff
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/* Completion DME status code */
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#define FS_DME_STATUS_MEM_COR_ERR BIT(0)
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#define FS_DME_STATUS_MEM_UCOR_ERR BIT(1)
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#define FS_DME_STATUS_FIFO_UNDRFLOW BIT(2)
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#define FS_DME_STATUS_FIFO_OVERFLOW BIT(3)
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#define FS_DME_STATUS_RRESP_ERR BIT(4)
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#define FS_DME_STATUS_BRESP_ERR BIT(5)
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#define FS_DME_STATUS_ERROR_MASK (FS_DME_STATUS_MEM_COR_ERR | \
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FS_DME_STATUS_MEM_UCOR_ERR | \
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FS_DME_STATUS_FIFO_UNDRFLOW | \
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FS_DME_STATUS_FIFO_OVERFLOW | \
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FS_DME_STATUS_RRESP_ERR | \
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FS_DME_STATUS_BRESP_ERR)
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/* APIs related to ring manager descriptors */
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uint64_t
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rm_build_desc(uint64_t val, uint32_t shift,
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uint64_t mask)
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{
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return((val & mask) << shift);
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}
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uint64_t
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rm_read_desc(void *desc_ptr)
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{
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return le64_to_cpu(*((uint64_t *)desc_ptr));
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}
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void
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rm_write_desc(void *desc_ptr, uint64_t desc)
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{
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*((uint64_t *)desc_ptr) = cpu_to_le64(desc);
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}
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uint32_t
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rm_cmpl_desc_to_reqid(uint64_t cmpl_desc)
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{
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return (uint32_t)(cmpl_desc & FS_CMPL_OPAQUE_MASK);
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}
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int
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rm_cmpl_desc_to_error(uint64_t cmpl_desc)
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{
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uint32_t status;
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status = FS_DESC_DEC(cmpl_desc, FS_CMPL_DME_STATUS_SHIFT,
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FS_CMPL_DME_STATUS_MASK);
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if (status & FS_DME_STATUS_ERROR_MASK)
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return -EIO;
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status = FS_DESC_DEC(cmpl_desc, FS_CMPL_RM_STATUS_SHIFT,
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FS_CMPL_RM_STATUS_MASK);
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status &= FS_RM_STATUS_CODE_MASK;
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if (status == FS_RM_STATUS_CODE_AE_TIMEOUT)
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return -ETIMEDOUT;
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return 0;
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}
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