drivers/net/hinic/base/hinic_pmd_wq.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2017 Huawei Technologies Co., Ltd
   3  */
   4
   5 #ifndef _HINIC_PMD_WQ_H_
   6 #define _HINIC_PMD_WQ_H_
   7
   8 #define WQS_BLOCKS_PER_PAGE             4
   9
  10 #define WQ_SIZE(wq)             (u32)((u64)(wq)->q_depth * (wq)->wqebb_size)
  11
  12 #define WQE_PAGE_NUM(wq, idx)   (((idx) >> ((wq)->wqebbs_per_page_shift)) & \
  13                                 ((wq)->num_q_pages - 1))
  14
  15 #define WQE_PAGE_OFF(wq, idx)   ((u64)((wq)->wqebb_size) * \
  16                                 ((idx) & ((wq)->num_wqebbs_per_page - 1)))
  17
  18 #define WQ_PAGE_ADDR_SIZE               sizeof(u64)
  19 #define WQ_PAGE_ADDR_SIZE_SHIFT         3
  20 #define WQ_PAGE_ADDR(wq, idx)           \
  21                 (u8 *)(*(u64 *)((u64)((wq)->shadow_block_vaddr) + \
  22                 (WQE_PAGE_NUM(wq, idx) << WQ_PAGE_ADDR_SIZE_SHIFT)))
  23
  24 #define WQ_BLOCK_SIZE           4096UL
  25 #define WQS_PAGE_SIZE           (WQS_BLOCKS_PER_PAGE * WQ_BLOCK_SIZE)
  26 #define WQ_MAX_PAGES            (WQ_BLOCK_SIZE >> WQ_PAGE_ADDR_SIZE_SHIFT)
  27
  28 #define CMDQ_BLOCKS_PER_PAGE            8
  29 #define CMDQ_BLOCK_SIZE                 512UL
  30 #define CMDQ_PAGE_SIZE                  ALIGN((CMDQ_BLOCKS_PER_PAGE * \
  31                                                 CMDQ_BLOCK_SIZE), PAGE_SIZE)
  32
  33 #define ADDR_4K_ALIGNED(addr)           (0 == ((addr) & 0xfff))
  34 #define ADDR_256K_ALIGNED(addr)         (0 == ((addr) & 0x3ffff))
  35
  36 #define WQ_BASE_VADDR(wqs, wq)          \
  37                 (u64 *)(((u64)((wqs)->page_vaddr[(wq)->page_idx])) \
  38                                 + (wq)->block_idx * WQ_BLOCK_SIZE)
  39
  40 #define WQ_BASE_PADDR(wqs, wq)  (((wqs)->page_paddr[(wq)->page_idx]) \
  41                                 + (u64)(wq)->block_idx * WQ_BLOCK_SIZE)
  42
  43 #define WQ_BASE_ADDR(wqs, wq)           \
  44                 (u64 *)(((u64)((wqs)->shadow_page_vaddr[(wq)->page_idx])) \
  45                                 + (wq)->block_idx * WQ_BLOCK_SIZE)
  46
  47 #define CMDQ_BASE_VADDR(cmdq_pages, wq) \
  48                         (u64 *)(((u64)((cmdq_pages)->cmdq_page_vaddr)) \
  49                                 + (wq)->block_idx * CMDQ_BLOCK_SIZE)
  50
  51 #define CMDQ_BASE_PADDR(cmdq_pages, wq) \
  52                         (((u64)((cmdq_pages)->cmdq_page_paddr)) \
  53                                 + (u64)(wq)->block_idx * CMDQ_BLOCK_SIZE)
  54
  55 #define CMDQ_BASE_ADDR(cmdq_pages, wq)  \
  56                         (u64 *)(((u64)((cmdq_pages)->cmdq_shadow_page_vaddr)) \
  57                                 + (wq)->block_idx * CMDQ_BLOCK_SIZE)
  58
  59 #define MASKED_WQE_IDX(wq, idx) ((idx) & (wq)->mask)
  60
  61 #define WQE_SHADOW_PAGE(wq, wqe)        \
  62                 (u16)(((unsigned long)(wqe) - (unsigned long)(wq)->shadow_wqe) \
  63                 / (wq)->max_wqe_size)
  64
  65 #define WQE_IN_RANGE(wqe, start, end)   \
  66                 (((unsigned long)(wqe) >= (unsigned long)(start)) && \
  67                 ((unsigned long)(wqe) < (unsigned long)(end)))
  68
  69 #define WQ_NUM_PAGES(num_wqs)   \
  70         (ALIGN((u32)num_wqs, WQS_BLOCKS_PER_PAGE) / WQS_BLOCKS_PER_PAGE)
  71
  72 #define WQ_WQE_ADDR(wq, idx) ((void *)((u64)((wq)->queue_buf_vaddr) + \
  73                               ((idx) << (wq)->wqebb_shift)))
  74
  75 #define WQ_PAGE_PFN_SHIFT                       12
  76 #define WQ_BLOCK_PFN_SHIFT                      9
  77
  78 #define WQ_PAGE_PFN(page_addr)          ((page_addr) >> WQ_PAGE_PFN_SHIFT)
  79 #define WQ_BLOCK_PFN(page_addr)         ((page_addr) >> WQ_BLOCK_PFN_SHIFT)
  80
  81
  82 #define HINIC_SQ_WQEBB_SIZE     64
  83 #define HINIC_RQ_WQE_SIZE       32
  84 #define HINIC_SQ_WQEBB_SHIFT    6
  85 #define HINIC_RQ_WQEBB_SHIFT    5
  86
  87 struct hinic_sge {
  88         u32             hi_addr;
  89         u32             lo_addr;
  90         u32             len;
  91 };
  92
  93 /* Working Queue */
  94 struct hinic_wq {
  95         /* The addresses are 64 bit in the HW */
  96         u64     queue_buf_vaddr;
  97
  98         u16             q_depth;
  99         u16             mask;
 100         u32             delta;
 101
 102         u32             cons_idx;
 103         u32             prod_idx;
 104
 105         u64     queue_buf_paddr;
 106
 107         u32             wqebb_size;
 108         u32             wqebb_shift;
 109
 110         u32             wq_buf_size;
 111
 112         u32             rsvd[5];
 113 };
 114
 115 void hinic_wq_wqe_pg_clear(struct hinic_wq *wq);
 116
 117 int hinic_cmdq_alloc(struct hinic_wq *wq, struct hinic_hwdev *hwdev,
 118                      int cmdq_blocks, u32 wq_buf_size, u32 wqebb_shift,
 119                      u16 q_depth);
 120
 121 void hinic_cmdq_free(struct hinic_hwdev *hwdev, struct hinic_wq *wq,
 122                      int cmdq_blocks);
 123
 124 int hinic_wq_allocate(struct hinic_hwdev *hwdev, struct hinic_wq *wq,
 125                       u32 wqebb_shift, u16 q_depth);
 126
 127 void hinic_wq_free(struct hinic_hwdev *hwdev, struct hinic_wq *wq);
 128
 129 void *hinic_get_wqe(struct hinic_wq *wq, int num_wqebbs, u16 *prod_idx);
 130
 131 void hinic_put_wqe(struct hinic_wq *wq, int num_wqebbs);
 132
 133 void *hinic_read_wqe(struct hinic_wq *wq, int num_wqebbs, u16 *cons_idx);
 134
 135 void hinic_set_sge(struct hinic_sge *sge, dma_addr_t addr, u32 len);
 136
 137 #endif /* _HINIC_PMD_WQ_H_ */