cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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pble.h (3203B)

      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
     12enum irdma_pble_level {
     13	PBLE_LEVEL_0 = 0,
     14	PBLE_LEVEL_1 = 1,
     15	PBLE_LEVEL_2 = 2,
     16};
     17
     18enum irdma_alloc_type {
     19	PBLE_NO_ALLOC	  = 0,
     20	PBLE_SD_CONTIGOUS = 1,
     21	PBLE_SD_PAGED	  = 2,
     22};
     23
     24struct irdma_chunk;
     25
     26struct irdma_pble_chunkinfo {
     27	struct irdma_chunk *pchunk;
     28	u64 bit_idx;
     29	u64 bits_used;
     30};
     31
     32struct irdma_pble_info {
     33	u64 *addr;
     34	u32 idx;
     35	u32 cnt;
     36	struct irdma_pble_chunkinfo chunkinfo;
     37};
     38
     39struct 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
     46struct 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
     55struct sd_pd_idx {
     56	u32 sd_idx;
     57	u32 pd_idx;
     58	u32 rel_pd_idx;
     59};
     60
     61struct 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
     69struct 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
     84struct 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
     92struct 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
    110void irdma_destroy_pble_prm(struct irdma_hmc_pble_rsrc *pble_rsrc);
    111int irdma_hmc_init_pble(struct irdma_sc_dev *dev,
    112			struct irdma_hmc_pble_rsrc *pble_rsrc);
    113void irdma_free_pble(struct irdma_hmc_pble_rsrc *pble_rsrc,
    114		     struct irdma_pble_alloc *palloc);
    115int irdma_get_pble(struct irdma_hmc_pble_rsrc *pble_rsrc,
    116		   struct irdma_pble_alloc *palloc, u32 pble_cnt,
    117		   bool level1_only);
    118int irdma_prm_add_pble_mem(struct irdma_pble_prm *pprm,
    119			   struct irdma_chunk *pchunk);
    120int irdma_prm_get_pbles(struct irdma_pble_prm *pprm,
    121			struct irdma_pble_chunkinfo *chunkinfo, u64 mem_size,
    122			u64 **vaddr, u64 *fpm_addr);
    123void irdma_prm_return_pbles(struct irdma_pble_prm *pprm,
    124			    struct irdma_pble_chunkinfo *chunkinfo);
    125void irdma_pble_acquire_lock(struct irdma_hmc_pble_rsrc *pble_rsrc,
    126			     unsigned long *flags);
    127void irdma_pble_release_lock(struct irdma_hmc_pble_rsrc *pble_rsrc,
    128			     unsigned long *flags);
    129void irdma_pble_free_paged_mem(struct irdma_chunk *chunk);
    130int irdma_pble_get_paged_mem(struct irdma_chunk *chunk, u32 pg_cnt);
    131void irdma_prm_rem_bitmapmem(struct irdma_hw *hw, struct irdma_chunk *chunk);
    132#endif /* IRDMA_PBLE_H */