drivers/infiniband/hw/irdma/pble.h

   1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
   2 /* Copyright (c) 2015 - 2019 Intel Corporation */
   3 #ifndef IRDMA_PBLE_H
   4 #define IRDMA_PBLE_H
   5
   6 #define PBLE_SHIFT              6
   7 #define PBLE_PER_PAGE           512
   8 #define HMC_PAGED_BP_SHIFT      12
   9 #define PBLE_512_SHIFT          9
  10 #define PBLE_INVALID_IDX        0xffffffff
  11
  12 enum irdma_pble_level {
  13         PBLE_LEVEL_0 = 0,
  14         PBLE_LEVEL_1 = 1,
  15         PBLE_LEVEL_2 = 2,
  16 };
  17
  18 enum irdma_alloc_type {
  19         PBLE_NO_ALLOC     = 0,
  20         PBLE_SD_CONTIGOUS = 1,
  21         PBLE_SD_PAGED     = 2,
  22 };
  23
  24 struct irdma_chunk;
  25
  26 struct irdma_pble_chunkinfo {
  27         struct irdma_chunk *pchunk;
  28         u64 bit_idx;
  29         u64 bits_used;
  30 };
  31
  32 struct irdma_pble_info {
  33         u64 *addr;
  34         u32 idx;
  35         u32 cnt;
  36         struct irdma_pble_chunkinfo chunkinfo;
  37 };
  38
  39 struct irdma_pble_level2 {
  40         struct irdma_pble_info root;
  41         struct irdma_pble_info *leaf;
  42         struct irdma_virt_mem leafmem;
  43         u32 leaf_cnt;
  44 };
  45
  46 struct irdma_pble_alloc {
  47         u32 total_cnt;
  48         enum irdma_pble_level level;
  49         union {
  50                 struct irdma_pble_info level1;
  51                 struct irdma_pble_level2 level2;
  52         };
  53 };
  54
  55 struct sd_pd_idx {
  56         u32 sd_idx;
  57         u32 pd_idx;
  58         u32 rel_pd_idx;
  59 };
  60
  61 struct irdma_add_page_info {
  62         struct irdma_chunk *chunk;
  63         struct irdma_hmc_sd_entry *sd_entry;
  64         struct irdma_hmc_info *hmc_info;
  65         struct sd_pd_idx idx;
  66         u32 pages;
  67 };
  68
  69 struct irdma_chunk {
  70         struct list_head list;
  71         struct irdma_dma_info dmainfo;
  72         unsigned long *bitmapbuf;
  73
  74         u32 sizeofbitmap;
  75         u64 size;
  76         void *vaddr;
  77         u64 fpm_addr;
  78         u32 pg_cnt;
  79         enum irdma_alloc_type type;
  80         struct irdma_sc_dev *dev;
  81         struct irdma_virt_mem chunkmem;
  82 };
  83
  84 struct irdma_pble_prm {
  85         struct list_head clist;
  86         spinlock_t prm_lock; /* protect prm bitmap */
  87         u64 total_pble_alloc;
  88         u64 free_pble_cnt;
  89         u8 pble_shift;
  90 };
  91
  92 struct irdma_hmc_pble_rsrc {
  93         u32 unallocated_pble;
  94         struct mutex pble_mutex_lock; /* protect PBLE resource */
  95         struct irdma_sc_dev *dev;
  96         u64 fpm_base_addr;
  97         u64 next_fpm_addr;
  98         struct irdma_pble_prm pinfo;
  99         u64 allocdpbles;
 100         u64 freedpbles;
 101         u32 stats_direct_sds;
 102         u32 stats_paged_sds;
 103         u64 stats_alloc_ok;
 104         u64 stats_alloc_fail;
 105         u64 stats_alloc_freed;
 106         u64 stats_lvl1;
 107         u64 stats_lvl2;
 108 };
 109
 110 void irdma_destroy_pble_prm(struct irdma_hmc_pble_rsrc *pble_rsrc);
 111 int irdma_hmc_init_pble(struct irdma_sc_dev *dev,
 112                         struct irdma_hmc_pble_rsrc *pble_rsrc);
 113 void irdma_free_pble(struct irdma_hmc_pble_rsrc *pble_rsrc,
 114                      struct irdma_pble_alloc *palloc);
 115 int irdma_get_pble(struct irdma_hmc_pble_rsrc *pble_rsrc,
 116                    struct irdma_pble_alloc *palloc, u32 pble_cnt,
 117                    u8 lvl);
 118 int irdma_prm_add_pble_mem(struct irdma_pble_prm *pprm,
 119                            struct irdma_chunk *pchunk);
 120 int irdma_prm_get_pbles(struct irdma_pble_prm *pprm,
 121                         struct irdma_pble_chunkinfo *chunkinfo, u64 mem_size,
 122                         u64 **vaddr, u64 *fpm_addr);
 123 void irdma_prm_return_pbles(struct irdma_pble_prm *pprm,
 124                             struct irdma_pble_chunkinfo *chunkinfo);
 125 void irdma_pble_acquire_lock(struct irdma_hmc_pble_rsrc *pble_rsrc,
 126                              unsigned long *flags);
 127 void irdma_pble_release_lock(struct irdma_hmc_pble_rsrc *pble_rsrc,
 128                              unsigned long *flags);
 129 void irdma_pble_free_paged_mem(struct irdma_chunk *chunk);
 130 int irdma_pble_get_paged_mem(struct irdma_chunk *chunk, u32 pg_cnt);
 131 void irdma_prm_rem_bitmapmem(struct irdma_hw *hw, struct irdma_chunk *chunk);
 132 #endif /* IRDMA_PBLE_H */