drivers/net/ethernet/intel/i40evf/i40e_hmc.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
   3
   4 #ifndef _I40E_HMC_H_
   5 #define _I40E_HMC_H_
   6
   7 #define I40E_HMC_MAX_BP_COUNT 512
   8
   9 /* forward-declare the HW struct for the compiler */
  10 struct i40e_hw;
  11
  12 #define I40E_HMC_INFO_SIGNATURE         0x484D5347 /* HMSG */
  13 #define I40E_HMC_PD_CNT_IN_SD           512
  14 #define I40E_HMC_DIRECT_BP_SIZE         0x200000 /* 2M */
  15 #define I40E_HMC_PAGED_BP_SIZE          4096
  16 #define I40E_HMC_PD_BP_BUF_ALIGNMENT    4096
  17 #define I40E_FIRST_VF_FPM_ID            16
  18
  19 struct i40e_hmc_obj_info {
  20         u64 base;       /* base addr in FPM */
  21         u32 max_cnt;    /* max count available for this hmc func */
  22         u32 cnt;        /* count of objects driver actually wants to create */
  23         u64 size;       /* size in bytes of one object */
  24 };
  25
  26 enum i40e_sd_entry_type {
  27         I40E_SD_TYPE_INVALID = 0,
  28         I40E_SD_TYPE_PAGED   = 1,
  29         I40E_SD_TYPE_DIRECT  = 2
  30 };
  31
  32 struct i40e_hmc_bp {
  33         enum i40e_sd_entry_type entry_type;
  34         struct i40e_dma_mem addr; /* populate to be used by hw */
  35         u32 sd_pd_index;
  36         u32 ref_cnt;
  37 };
  38
  39 struct i40e_hmc_pd_entry {
  40         struct i40e_hmc_bp bp;
  41         u32 sd_index;
  42         bool rsrc_pg;
  43         bool valid;
  44 };
  45
  46 struct i40e_hmc_pd_table {
  47         struct i40e_dma_mem pd_page_addr; /* populate to be used by hw */
  48         struct i40e_hmc_pd_entry  *pd_entry; /* [512] for sw book keeping */
  49         struct i40e_virt_mem pd_entry_virt_mem; /* virt mem for pd_entry */
  50
  51         u32 ref_cnt;
  52         u32 sd_index;
  53 };
  54
  55 struct i40e_hmc_sd_entry {
  56         enum i40e_sd_entry_type entry_type;
  57         bool valid;
  58
  59         union {
  60                 struct i40e_hmc_pd_table pd_table;
  61                 struct i40e_hmc_bp bp;
  62         } u;
  63 };
  64
  65 struct i40e_hmc_sd_table {
  66         struct i40e_virt_mem addr; /* used to track sd_entry allocations */
  67         u32 sd_cnt;
  68         u32 ref_cnt;
  69         struct i40e_hmc_sd_entry *sd_entry; /* (sd_cnt*512) entries max */
  70 };
  71
  72 struct i40e_hmc_info {
  73         u32 signature;
  74         /* equals to pci func num for PF and dynamically allocated for VFs */
  75         u8 hmc_fn_id;
  76         u16 first_sd_index; /* index of the first available SD */
  77
  78         /* hmc objects */
  79         struct i40e_hmc_obj_info *hmc_obj;
  80         struct i40e_virt_mem hmc_obj_virt_mem;
  81         struct i40e_hmc_sd_table sd_table;
  82 };
  83
  84 #define I40E_INC_SD_REFCNT(sd_table)    ((sd_table)->ref_cnt++)
  85 #define I40E_INC_PD_REFCNT(pd_table)    ((pd_table)->ref_cnt++)
  86 #define I40E_INC_BP_REFCNT(bp)          ((bp)->ref_cnt++)
  87
  88 #define I40E_DEC_SD_REFCNT(sd_table)    ((sd_table)->ref_cnt--)
  89 #define I40E_DEC_PD_REFCNT(pd_table)    ((pd_table)->ref_cnt--)
  90 #define I40E_DEC_BP_REFCNT(bp)          ((bp)->ref_cnt--)
  91
  92 /**
  93  * I40E_SET_PF_SD_ENTRY - marks the sd entry as valid in the hardware
  94  * @hw: pointer to our hw struct
  95  * @pa: pointer to physical address
  96  * @sd_index: segment descriptor index
  97  * @type: if sd entry is direct or paged
  98  **/
  99 #define I40E_SET_PF_SD_ENTRY(hw, pa, sd_index, type)                    \
 100 {                                                                       \
 101         u32 val1, val2, val3;                                           \
 102         val1 = (u32)(upper_32_bits(pa));                                \
 103         val2 = (u32)(pa) | (I40E_HMC_MAX_BP_COUNT <<                    \
 104                  I40E_PFHMC_SDDATALOW_PMSDBPCOUNT_SHIFT) |              \
 105                 ((((type) == I40E_SD_TYPE_PAGED) ? 0 : 1) <<            \
 106                 I40E_PFHMC_SDDATALOW_PMSDTYPE_SHIFT) |                  \
 107                 BIT(I40E_PFHMC_SDDATALOW_PMSDVALID_SHIFT);              \
 108         val3 = (sd_index) | BIT_ULL(I40E_PFHMC_SDCMD_PMSDWR_SHIFT);     \
 109         wr32((hw), I40E_PFHMC_SDDATAHIGH, val1);                        \
 110         wr32((hw), I40E_PFHMC_SDDATALOW, val2);                         \
 111         wr32((hw), I40E_PFHMC_SDCMD, val3);                             \
 112 }
 113
 114 /**
 115  * I40E_CLEAR_PF_SD_ENTRY - marks the sd entry as invalid in the hardware
 116  * @hw: pointer to our hw struct
 117  * @sd_index: segment descriptor index
 118  * @type: if sd entry is direct or paged
 119  **/
 120 #define I40E_CLEAR_PF_SD_ENTRY(hw, sd_index, type)                      \
 121 {                                                                       \
 122         u32 val2, val3;                                                 \
 123         val2 = (I40E_HMC_MAX_BP_COUNT <<                                \
 124                 I40E_PFHMC_SDDATALOW_PMSDBPCOUNT_SHIFT) |               \
 125                 ((((type) == I40E_SD_TYPE_PAGED) ? 0 : 1) <<            \
 126                 I40E_PFHMC_SDDATALOW_PMSDTYPE_SHIFT);                   \
 127         val3 = (sd_index) | BIT_ULL(I40E_PFHMC_SDCMD_PMSDWR_SHIFT);     \
 128         wr32((hw), I40E_PFHMC_SDDATAHIGH, 0);                           \
 129         wr32((hw), I40E_PFHMC_SDDATALOW, val2);                         \
 130         wr32((hw), I40E_PFHMC_SDCMD, val3);                             \
 131 }
 132
 133 /**
 134  * I40E_INVALIDATE_PF_HMC_PD - Invalidates the pd cache in the hardware
 135  * @hw: pointer to our hw struct
 136  * @sd_idx: segment descriptor index
 137  * @pd_idx: page descriptor index
 138  **/
 139 #define I40E_INVALIDATE_PF_HMC_PD(hw, sd_idx, pd_idx)                   \
 140         wr32((hw), I40E_PFHMC_PDINV,                                    \
 141             (((sd_idx) << I40E_PFHMC_PDINV_PMSDIDX_SHIFT) |             \
 142              ((pd_idx) << I40E_PFHMC_PDINV_PMPDIDX_SHIFT)))
 143
 144 /**
 145  * I40E_FIND_SD_INDEX_LIMIT - finds segment descriptor index limit
 146  * @hmc_info: pointer to the HMC configuration information structure
 147  * @type: type of HMC resources we're searching
 148  * @index: starting index for the object
 149  * @cnt: number of objects we're trying to create
 150  * @sd_idx: pointer to return index of the segment descriptor in question
 151  * @sd_limit: pointer to return the maximum number of segment descriptors
 152  *
 153  * This function calculates the segment descriptor index and index limit
 154  * for the resource defined by i40e_hmc_rsrc_type.
 155  **/
 156 #define I40E_FIND_SD_INDEX_LIMIT(hmc_info, type, index, cnt, sd_idx, sd_limit)\
 157 {                                                                       \
 158         u64 fpm_addr, fpm_limit;                                        \
 159         fpm_addr = (hmc_info)->hmc_obj[(type)].base +                   \
 160                    (hmc_info)->hmc_obj[(type)].size * (index);          \
 161         fpm_limit = fpm_addr + (hmc_info)->hmc_obj[(type)].size * (cnt);\
 162         *(sd_idx) = (u32)(fpm_addr / I40E_HMC_DIRECT_BP_SIZE);          \
 163         *(sd_limit) = (u32)((fpm_limit - 1) / I40E_HMC_DIRECT_BP_SIZE); \
 164         /* add one more to the limit to correct our range */            \
 165         *(sd_limit) += 1;                                               \
 166 }
 167
 168 /**
 169  * I40E_FIND_PD_INDEX_LIMIT - finds page descriptor index limit
 170  * @hmc_info: pointer to the HMC configuration information struct
 171  * @type: HMC resource type we're examining
 172  * @idx: starting index for the object
 173  * @cnt: number of objects we're trying to create
 174  * @pd_index: pointer to return page descriptor index
 175  * @pd_limit: pointer to return page descriptor index limit
 176  *
 177  * Calculates the page descriptor index and index limit for the resource
 178  * defined by i40e_hmc_rsrc_type.
 179  **/
 180 #define I40E_FIND_PD_INDEX_LIMIT(hmc_info, type, idx, cnt, pd_index, pd_limit)\
 181 {                                                                       \
 182         u64 fpm_adr, fpm_limit;                                         \
 183         fpm_adr = (hmc_info)->hmc_obj[(type)].base +                    \
 184                   (hmc_info)->hmc_obj[(type)].size * (idx);             \
 185         fpm_limit = fpm_adr + (hmc_info)->hmc_obj[(type)].size * (cnt); \
 186         *(pd_index) = (u32)(fpm_adr / I40E_HMC_PAGED_BP_SIZE);          \
 187         *(pd_limit) = (u32)((fpm_limit - 1) / I40E_HMC_PAGED_BP_SIZE);  \
 188         /* add one more to the limit to correct our range */            \
 189         *(pd_limit) += 1;                                               \
 190 }
 191 i40e_status i40e_add_sd_table_entry(struct i40e_hw *hw,
 192                                               struct i40e_hmc_info *hmc_info,
 193                                               u32 sd_index,
 194                                               enum i40e_sd_entry_type type,
 195                                               u64 direct_mode_sz);
 196
 197 i40e_status i40e_add_pd_table_entry(struct i40e_hw *hw,
 198                                               struct i40e_hmc_info *hmc_info,
 199                                               u32 pd_index,
 200                                               struct i40e_dma_mem *rsrc_pg);
 201 i40e_status i40e_remove_pd_bp(struct i40e_hw *hw,
 202                                         struct i40e_hmc_info *hmc_info,
 203                                         u32 idx);
 204 i40e_status i40e_prep_remove_sd_bp(struct i40e_hmc_info *hmc_info,
 205                                              u32 idx);
 206 i40e_status i40e_remove_sd_bp_new(struct i40e_hw *hw,
 207                                             struct i40e_hmc_info *hmc_info,
 208                                             u32 idx, bool is_pf);
 209 i40e_status i40e_prep_remove_pd_page(struct i40e_hmc_info *hmc_info,
 210                                                u32 idx);
 211 i40e_status i40e_remove_pd_page_new(struct i40e_hw *hw,
 212                                               struct i40e_hmc_info *hmc_info,
 213                                               u32 idx, bool is_pf);
 214
 215 #endif /* _I40E_HMC_H_ */