1 /******************************************************************************* 2 * 3 * Intel Ethernet Controller XL710 Family Linux Driver 4 * Copyright(c) 2013 - 2014 Intel Corporation. 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms and conditions of the GNU General Public License, 8 * version 2, as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 13 * more details. 14 * 15 * You should have received a copy of the GNU General Public License along 16 * with this program. If not, see <http://www.gnu.org/licenses/>. 17 * 18 * The full GNU General Public License is included in this distribution in 19 * the file called "COPYING". 20 * 21 * Contact Information: 22 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> 23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 24 * 25 ******************************************************************************/ 26 27 #ifndef _I40E_HMC_H_ 28 #define _I40E_HMC_H_ 29 30 #define I40E_HMC_MAX_BP_COUNT 512 31 32 /* forward-declare the HW struct for the compiler */ 33 struct i40e_hw; 34 35 #define I40E_HMC_INFO_SIGNATURE 0x484D5347 /* HMSG */ 36 #define I40E_HMC_PD_CNT_IN_SD 512 37 #define I40E_HMC_DIRECT_BP_SIZE 0x200000 /* 2M */ 38 #define I40E_HMC_PAGED_BP_SIZE 4096 39 #define I40E_HMC_PD_BP_BUF_ALIGNMENT 4096 40 #define I40E_FIRST_VF_FPM_ID 16 41 42 struct i40e_hmc_obj_info { 43 u64 base; /* base addr in FPM */ 44 u32 max_cnt; /* max count available for this hmc func */ 45 u32 cnt; /* count of objects driver actually wants to create */ 46 u64 size; /* size in bytes of one object */ 47 }; 48 49 enum i40e_sd_entry_type { 50 I40E_SD_TYPE_INVALID = 0, 51 I40E_SD_TYPE_PAGED = 1, 52 I40E_SD_TYPE_DIRECT = 2 53 }; 54 55 struct i40e_hmc_bp { 56 enum i40e_sd_entry_type entry_type; 57 struct i40e_dma_mem addr; /* populate to be used by hw */ 58 u32 sd_pd_index; 59 u32 ref_cnt; 60 }; 61 62 struct i40e_hmc_pd_entry { 63 struct i40e_hmc_bp bp; 64 u32 sd_index; 65 bool valid; 66 }; 67 68 struct i40e_hmc_pd_table { 69 struct i40e_dma_mem pd_page_addr; /* populate to be used by hw */ 70 struct i40e_hmc_pd_entry *pd_entry; /* [512] for sw book keeping */ 71 struct i40e_virt_mem pd_entry_virt_mem; /* virt mem for pd_entry */ 72 73 u32 ref_cnt; 74 u32 sd_index; 75 }; 76 77 struct i40e_hmc_sd_entry { 78 enum i40e_sd_entry_type entry_type; 79 bool valid; 80 81 union { 82 struct i40e_hmc_pd_table pd_table; 83 struct i40e_hmc_bp bp; 84 } u; 85 }; 86 87 struct i40e_hmc_sd_table { 88 struct i40e_virt_mem addr; /* used to track sd_entry allocations */ 89 u32 sd_cnt; 90 u32 ref_cnt; 91 struct i40e_hmc_sd_entry *sd_entry; /* (sd_cnt*512) entries max */ 92 }; 93 94 struct i40e_hmc_info { 95 u32 signature; 96 /* equals to pci func num for PF and dynamically allocated for VFs */ 97 u8 hmc_fn_id; 98 u16 first_sd_index; /* index of the first available SD */ 99 100 /* hmc objects */ 101 struct i40e_hmc_obj_info *hmc_obj; 102 struct i40e_virt_mem hmc_obj_virt_mem; 103 struct i40e_hmc_sd_table sd_table; 104 }; 105 106 #define I40E_INC_SD_REFCNT(sd_table) ((sd_table)->ref_cnt++) 107 #define I40E_INC_PD_REFCNT(pd_table) ((pd_table)->ref_cnt++) 108 #define I40E_INC_BP_REFCNT(bp) ((bp)->ref_cnt++) 109 110 #define I40E_DEC_SD_REFCNT(sd_table) ((sd_table)->ref_cnt--) 111 #define I40E_DEC_PD_REFCNT(pd_table) ((pd_table)->ref_cnt--) 112 #define I40E_DEC_BP_REFCNT(bp) ((bp)->ref_cnt--) 113 114 /** 115 * I40E_SET_PF_SD_ENTRY - marks the sd entry as valid in the hardware 116 * @hw: pointer to our hw struct 117 * @pa: pointer to physical address 118 * @sd_index: segment descriptor index 119 * @type: if sd entry is direct or paged 120 **/ 121 #define I40E_SET_PF_SD_ENTRY(hw, pa, sd_index, type) \ 122 { \ 123 u32 val1, val2, val3; \ 124 val1 = (u32)(upper_32_bits(pa)); \ 125 val2 = (u32)(pa) | (I40E_HMC_MAX_BP_COUNT << \ 126 I40E_PFHMC_SDDATALOW_PMSDBPCOUNT_SHIFT) | \ 127 ((((type) == I40E_SD_TYPE_PAGED) ? 0 : 1) << \ 128 I40E_PFHMC_SDDATALOW_PMSDTYPE_SHIFT) | \ 129 (1 << I40E_PFHMC_SDDATALOW_PMSDVALID_SHIFT); \ 130 val3 = (sd_index) | (1u << I40E_PFHMC_SDCMD_PMSDWR_SHIFT); \ 131 wr32((hw), I40E_PFHMC_SDDATAHIGH, val1); \ 132 wr32((hw), I40E_PFHMC_SDDATALOW, val2); \ 133 wr32((hw), I40E_PFHMC_SDCMD, val3); \ 134 } 135 136 /** 137 * I40E_CLEAR_PF_SD_ENTRY - marks the sd entry as invalid in the hardware 138 * @hw: pointer to our hw struct 139 * @sd_index: segment descriptor index 140 * @type: if sd entry is direct or paged 141 **/ 142 #define I40E_CLEAR_PF_SD_ENTRY(hw, sd_index, type) \ 143 { \ 144 u32 val2, val3; \ 145 val2 = (I40E_HMC_MAX_BP_COUNT << \ 146 I40E_PFHMC_SDDATALOW_PMSDBPCOUNT_SHIFT) | \ 147 ((((type) == I40E_SD_TYPE_PAGED) ? 0 : 1) << \ 148 I40E_PFHMC_SDDATALOW_PMSDTYPE_SHIFT); \ 149 val3 = (sd_index) | (1u << I40E_PFHMC_SDCMD_PMSDWR_SHIFT); \ 150 wr32((hw), I40E_PFHMC_SDDATAHIGH, 0); \ 151 wr32((hw), I40E_PFHMC_SDDATALOW, val2); \ 152 wr32((hw), I40E_PFHMC_SDCMD, val3); \ 153 } 154 155 /** 156 * I40E_INVALIDATE_PF_HMC_PD - Invalidates the pd cache in the hardware 157 * @hw: pointer to our hw struct 158 * @sd_idx: segment descriptor index 159 * @pd_idx: page descriptor index 160 **/ 161 #define I40E_INVALIDATE_PF_HMC_PD(hw, sd_idx, pd_idx) \ 162 wr32((hw), I40E_PFHMC_PDINV, \ 163 (((sd_idx) << I40E_PFHMC_PDINV_PMSDIDX_SHIFT) | \ 164 ((pd_idx) << I40E_PFHMC_PDINV_PMPDIDX_SHIFT))) 165 166 /** 167 * I40E_FIND_SD_INDEX_LIMIT - finds segment descriptor index limit 168 * @hmc_info: pointer to the HMC configuration information structure 169 * @type: type of HMC resources we're searching 170 * @index: starting index for the object 171 * @cnt: number of objects we're trying to create 172 * @sd_idx: pointer to return index of the segment descriptor in question 173 * @sd_limit: pointer to return the maximum number of segment descriptors 174 * 175 * This function calculates the segment descriptor index and index limit 176 * for the resource defined by i40e_hmc_rsrc_type. 177 **/ 178 #define I40E_FIND_SD_INDEX_LIMIT(hmc_info, type, index, cnt, sd_idx, sd_limit)\ 179 { \ 180 u64 fpm_addr, fpm_limit; \ 181 fpm_addr = (hmc_info)->hmc_obj[(type)].base + \ 182 (hmc_info)->hmc_obj[(type)].size * (index); \ 183 fpm_limit = fpm_addr + (hmc_info)->hmc_obj[(type)].size * (cnt);\ 184 *(sd_idx) = (u32)(fpm_addr / I40E_HMC_DIRECT_BP_SIZE); \ 185 *(sd_limit) = (u32)((fpm_limit - 1) / I40E_HMC_DIRECT_BP_SIZE); \ 186 /* add one more to the limit to correct our range */ \ 187 *(sd_limit) += 1; \ 188 } 189 190 /** 191 * I40E_FIND_PD_INDEX_LIMIT - finds page descriptor index limit 192 * @hmc_info: pointer to the HMC configuration information struct 193 * @type: HMC resource type we're examining 194 * @idx: starting index for the object 195 * @cnt: number of objects we're trying to create 196 * @pd_index: pointer to return page descriptor index 197 * @pd_limit: pointer to return page descriptor index limit 198 * 199 * Calculates the page descriptor index and index limit for the resource 200 * defined by i40e_hmc_rsrc_type. 201 **/ 202 #define I40E_FIND_PD_INDEX_LIMIT(hmc_info, type, idx, cnt, pd_index, pd_limit)\ 203 { \ 204 u64 fpm_adr, fpm_limit; \ 205 fpm_adr = (hmc_info)->hmc_obj[(type)].base + \ 206 (hmc_info)->hmc_obj[(type)].size * (idx); \ 207 fpm_limit = fpm_adr + (hmc_info)->hmc_obj[(type)].size * (cnt); \ 208 *(pd_index) = (u32)(fpm_adr / I40E_HMC_PAGED_BP_SIZE); \ 209 *(pd_limit) = (u32)((fpm_limit - 1) / I40E_HMC_PAGED_BP_SIZE); \ 210 /* add one more to the limit to correct our range */ \ 211 *(pd_limit) += 1; \ 212 } 213 i40e_status i40e_add_sd_table_entry(struct i40e_hw *hw, 214 struct i40e_hmc_info *hmc_info, 215 u32 sd_index, 216 enum i40e_sd_entry_type type, 217 u64 direct_mode_sz); 218 219 i40e_status i40e_add_pd_table_entry(struct i40e_hw *hw, 220 struct i40e_hmc_info *hmc_info, 221 u32 pd_index); 222 i40e_status i40e_remove_pd_bp(struct i40e_hw *hw, 223 struct i40e_hmc_info *hmc_info, 224 u32 idx); 225 i40e_status i40e_prep_remove_sd_bp(struct i40e_hmc_info *hmc_info, 226 u32 idx); 227 i40e_status i40e_remove_sd_bp_new(struct i40e_hw *hw, 228 struct i40e_hmc_info *hmc_info, 229 u32 idx, bool is_pf); 230 i40e_status i40e_prep_remove_pd_page(struct i40e_hmc_info *hmc_info, 231 u32 idx); 232 i40e_status i40e_remove_pd_page_new(struct i40e_hw *hw, 233 struct i40e_hmc_info *hmc_info, 234 u32 idx, bool is_pf); 235 236 #endif /* _I40E_HMC_H_ */ 237