lib/librte_pmd_i40e/i40e/i40e_hmc.h

   1 /*******************************************************************************
   2
   3 Copyright (c) 2013 - 2015, Intel Corporation
   4 All rights reserved.
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  10     this list of conditions and the following disclaimer.
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  14     documentation and/or other materials provided with the distribution.
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  30 POSSIBILITY OF SUCH DAMAGE.
  31
  32 ***************************************************************************/
  33
  34 #ifndef _I40E_HMC_H_
  35 #define _I40E_HMC_H_
  36
  37 #define I40E_HMC_MAX_BP_COUNT 512
  38
  39 /* forward-declare the HW struct for the compiler */
  40 struct i40e_hw;
  41
  42 #define I40E_HMC_INFO_SIGNATURE         0x484D5347 /* HMSG */
  43 #define I40E_HMC_PD_CNT_IN_SD           512
  44 #define I40E_HMC_DIRECT_BP_SIZE         0x200000 /* 2M */
  45 #define I40E_HMC_PAGED_BP_SIZE          4096
  46 #define I40E_HMC_PD_BP_BUF_ALIGNMENT    4096
  47 #define I40E_FIRST_VF_FPM_ID            16
  48
  49 struct i40e_hmc_obj_info {
  50         u64 base;       /* base addr in FPM */
  51         u32 max_cnt;    /* max count available for this hmc func */
  52         u32 cnt;        /* count of objects driver actually wants to create */
  53         u64 size;       /* size in bytes of one object */
  54 };
  55
  56 enum i40e_sd_entry_type {
  57         I40E_SD_TYPE_INVALID = 0,
  58         I40E_SD_TYPE_PAGED   = 1,
  59         I40E_SD_TYPE_DIRECT  = 2
  60 };
  61
  62 struct i40e_hmc_bp {
  63         enum i40e_sd_entry_type entry_type;
  64         struct i40e_dma_mem addr; /* populate to be used by hw */
  65         u32 sd_pd_index;
  66         u32 ref_cnt;
  67 };
  68
  69 struct i40e_hmc_pd_entry {
  70         struct i40e_hmc_bp bp;
  71         u32 sd_index;
  72         bool valid;
  73 };
  74
  75 struct i40e_hmc_pd_table {
  76         struct i40e_dma_mem pd_page_addr; /* populate to be used by hw */
  77         struct i40e_hmc_pd_entry  *pd_entry; /* [512] for sw book keeping */
  78         struct i40e_virt_mem pd_entry_virt_mem; /* virt mem for pd_entry */
  79
  80         u32 ref_cnt;
  81         u32 sd_index;
  82 };
  83
  84 struct i40e_hmc_sd_entry {
  85         enum i40e_sd_entry_type entry_type;
  86         bool valid;
  87
  88         union {
  89                 struct i40e_hmc_pd_table pd_table;
  90                 struct i40e_hmc_bp bp;
  91         } u;
  92 };
  93
  94 struct i40e_hmc_sd_table {
  95         struct i40e_virt_mem addr; /* used to track sd_entry allocations */
  96         u32 sd_cnt;
  97         u32 ref_cnt;
  98         struct i40e_hmc_sd_entry *sd_entry; /* (sd_cnt*512) entries max */
  99 };
 100
 101 struct i40e_hmc_info {
 102         u32 signature;
 103         /* equals to pci func num for PF and dynamically allocated for VFs */
 104         u8 hmc_fn_id;
 105         u16 first_sd_index; /* index of the first available SD */
 106
 107         /* hmc objects */
 108         struct i40e_hmc_obj_info *hmc_obj;
 109         struct i40e_virt_mem hmc_obj_virt_mem;
 110         struct i40e_hmc_sd_table sd_table;
 111 };
 112
 113 #define I40E_INC_SD_REFCNT(sd_table)    ((sd_table)->ref_cnt++)
 114 #define I40E_INC_PD_REFCNT(pd_table)    ((pd_table)->ref_cnt++)
 115 #define I40E_INC_BP_REFCNT(bp)          ((bp)->ref_cnt++)
 116
 117 #define I40E_DEC_SD_REFCNT(sd_table)    ((sd_table)->ref_cnt--)
 118 #define I40E_DEC_PD_REFCNT(pd_table)    ((pd_table)->ref_cnt--)
 119 #define I40E_DEC_BP_REFCNT(bp)          ((bp)->ref_cnt--)
 120
 121 /**
 122  * I40E_SET_PF_SD_ENTRY - marks the sd entry as valid in the hardware
 123  * @hw: pointer to our hw struct
 124  * @pa: pointer to physical address
 125  * @sd_index: segment descriptor index
 126  * @type: if sd entry is direct or paged
 127  **/
 128 #define I40E_SET_PF_SD_ENTRY(hw, pa, sd_index, type)                    \
 129 {                                                                       \
 130         u32 val1, val2, val3;                                           \
 131         val1 = (u32)(I40E_HI_DWORD(pa));                                \
 132         val2 = (u32)(pa) | (I40E_HMC_MAX_BP_COUNT <<                    \
 133                  I40E_PFHMC_SDDATALOW_PMSDBPCOUNT_SHIFT) |              \
 134                 ((((type) == I40E_SD_TYPE_PAGED) ? 0 : 1) <<            \
 135                 I40E_PFHMC_SDDATALOW_PMSDTYPE_SHIFT) |                  \
 136                 (1 << I40E_PFHMC_SDDATALOW_PMSDVALID_SHIFT);            \
 137         val3 = (sd_index) | (1u << I40E_PFHMC_SDCMD_PMSDWR_SHIFT);      \
 138         wr32((hw), I40E_PFHMC_SDDATAHIGH, val1);                        \
 139         wr32((hw), I40E_PFHMC_SDDATALOW, val2);                         \
 140         wr32((hw), I40E_PFHMC_SDCMD, val3);                             \
 141 }
 142
 143 /**
 144  * I40E_CLEAR_PF_SD_ENTRY - marks the sd entry as invalid in the hardware
 145  * @hw: pointer to our hw struct
 146  * @sd_index: segment descriptor index
 147  * @type: if sd entry is direct or paged
 148  **/
 149 #define I40E_CLEAR_PF_SD_ENTRY(hw, sd_index, type)                      \
 150 {                                                                       \
 151         u32 val2, val3;                                                 \
 152         val2 = (I40E_HMC_MAX_BP_COUNT <<                                \
 153                 I40E_PFHMC_SDDATALOW_PMSDBPCOUNT_SHIFT) |               \
 154                 ((((type) == I40E_SD_TYPE_PAGED) ? 0 : 1) <<            \
 155                 I40E_PFHMC_SDDATALOW_PMSDTYPE_SHIFT);                   \
 156         val3 = (sd_index) | (1u << I40E_PFHMC_SDCMD_PMSDWR_SHIFT);      \
 157         wr32((hw), I40E_PFHMC_SDDATAHIGH, 0);                           \
 158         wr32((hw), I40E_PFHMC_SDDATALOW, val2);                         \
 159         wr32((hw), I40E_PFHMC_SDCMD, val3);                             \
 160 }
 161
 162 /**
 163  * I40E_INVALIDATE_PF_HMC_PD - Invalidates the pd cache in the hardware
 164  * @hw: pointer to our hw struct
 165  * @sd_idx: segment descriptor index
 166  * @pd_idx: page descriptor index
 167  **/
 168 #define I40E_INVALIDATE_PF_HMC_PD(hw, sd_idx, pd_idx)                   \
 169         wr32((hw), I40E_PFHMC_PDINV,                                    \
 170             (((sd_idx) << I40E_PFHMC_PDINV_PMSDIDX_SHIFT) |             \
 171              ((pd_idx) << I40E_PFHMC_PDINV_PMPDIDX_SHIFT)))
 172
 173 /**
 174  * I40E_FIND_SD_INDEX_LIMIT - finds segment descriptor index limit
 175  * @hmc_info: pointer to the HMC configuration information structure
 176  * @type: type of HMC resources we're searching
 177  * @index: starting index for the object
 178  * @cnt: number of objects we're trying to create
 179  * @sd_idx: pointer to return index of the segment descriptor in question
 180  * @sd_limit: pointer to return the maximum number of segment descriptors
 181  *
 182  * This function calculates the segment descriptor index and index limit
 183  * for the resource defined by i40e_hmc_rsrc_type.
 184  **/
 185 #define I40E_FIND_SD_INDEX_LIMIT(hmc_info, type, index, cnt, sd_idx, sd_limit)\
 186 {                                                                       \
 187         u64 fpm_addr, fpm_limit;                                        \
 188         fpm_addr = (hmc_info)->hmc_obj[(type)].base +                   \
 189                    (hmc_info)->hmc_obj[(type)].size * (index);          \
 190         fpm_limit = fpm_addr + (hmc_info)->hmc_obj[(type)].size * (cnt);\
 191         *(sd_idx) = (u32)(fpm_addr / I40E_HMC_DIRECT_BP_SIZE);          \
 192         *(sd_limit) = (u32)((fpm_limit - 1) / I40E_HMC_DIRECT_BP_SIZE); \
 193         /* add one more to the limit to correct our range */            \
 194         *(sd_limit) += 1;                                               \
 195 }
 196
 197 /**
 198  * I40E_FIND_PD_INDEX_LIMIT - finds page descriptor index limit
 199  * @hmc_info: pointer to the HMC configuration information struct
 200  * @type: HMC resource type we're examining
 201  * @idx: starting index for the object
 202  * @cnt: number of objects we're trying to create
 203  * @pd_index: pointer to return page descriptor index
 204  * @pd_limit: pointer to return page descriptor index limit
 205  *
 206  * Calculates the page descriptor index and index limit for the resource
 207  * defined by i40e_hmc_rsrc_type.
 208  **/
 209 #define I40E_FIND_PD_INDEX_LIMIT(hmc_info, type, idx, cnt, pd_index, pd_limit)\
 210 {                                                                       \
 211         u64 fpm_adr, fpm_limit;                                         \
 212         fpm_adr = (hmc_info)->hmc_obj[(type)].base +                    \
 213                   (hmc_info)->hmc_obj[(type)].size * (idx);             \
 214         fpm_limit = fpm_adr + (hmc_info)->hmc_obj[(type)].size * (cnt); \
 215         *(pd_index) = (u32)(fpm_adr / I40E_HMC_PAGED_BP_SIZE);          \
 216         *(pd_limit) = (u32)((fpm_limit - 1) / I40E_HMC_PAGED_BP_SIZE);  \
 217         /* add one more to the limit to correct our range */            \
 218         *(pd_limit) += 1;                                               \
 219 }
 220 enum i40e_status_code i40e_add_sd_table_entry(struct i40e_hw *hw,
 221                                               struct i40e_hmc_info *hmc_info,
 222                                               u32 sd_index,
 223                                               enum i40e_sd_entry_type type,
 224                                               u64 direct_mode_sz);
 225
 226 enum i40e_status_code i40e_add_pd_table_entry(struct i40e_hw *hw,
 227                                               struct i40e_hmc_info *hmc_info,
 228                                               u32 pd_index);
 229 enum i40e_status_code i40e_remove_pd_bp(struct i40e_hw *hw,
 230                                         struct i40e_hmc_info *hmc_info,
 231                                         u32 idx);
 232 enum i40e_status_code i40e_prep_remove_sd_bp(struct i40e_hmc_info *hmc_info,
 233                                              u32 idx);
 234 enum i40e_status_code i40e_remove_sd_bp_new(struct i40e_hw *hw,
 235                                             struct i40e_hmc_info *hmc_info,
 236                                             u32 idx, bool is_pf);
 237 enum i40e_status_code i40e_prep_remove_pd_page(struct i40e_hmc_info *hmc_info,
 238                                                u32 idx);
 239 enum i40e_status_code i40e_remove_pd_page_new(struct i40e_hw *hw,
 240                                               struct i40e_hmc_info *hmc_info,
 241                                               u32 idx, bool is_pf);
 242
 243 #endif /* _I40E_HMC_H_ */