Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame^] | 1 | /* Copyright (c) 2016, The Linux Foundation. All rights reserved. |
| 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | */ |
| 12 | |
| 13 | #ifndef _IPAHAL_FLTRT_H_ |
| 14 | #define _IPAHAL_FLTRT_H_ |
| 15 | |
| 16 | /* |
| 17 | * struct ipahal_fltrt_alloc_imgs_params - Params for tbls imgs allocations |
| 18 | * The allocation logic will allocate DMA memory representing the header. |
| 19 | * If the bodies are local (SRAM) the allocation will allocate |
| 20 | * a DMA buffers that would contain the content of these local tables in raw |
| 21 | * @ipt: IP version type |
| 22 | * @tbls_num: Number of tables to represent by the header |
| 23 | * @num_lcl_hash_tbls: Number of local (sram) hashable tables |
| 24 | * @num_lcl_nhash_tbls: Number of local (sram) non-hashable tables |
| 25 | * @total_sz_lcl_hash_tbls: Total size of local hashable tables |
| 26 | * @total_sz_lcl_nhash_tbls: Total size of local non-hashable tables |
| 27 | * @hash_hdr/nhash_hdr: OUT params for the header structures |
| 28 | * @hash_bdy/nhash_bdy: OUT params for the local body structures |
| 29 | */ |
| 30 | struct ipahal_fltrt_alloc_imgs_params { |
| 31 | enum ipa_ip_type ipt; |
| 32 | u32 tbls_num; |
| 33 | u32 num_lcl_hash_tbls; |
| 34 | u32 num_lcl_nhash_tbls; |
| 35 | u32 total_sz_lcl_hash_tbls; |
| 36 | u32 total_sz_lcl_nhash_tbls; |
| 37 | |
| 38 | /* OUT PARAMS */ |
| 39 | struct ipa_mem_buffer hash_hdr; |
| 40 | struct ipa_mem_buffer nhash_hdr; |
| 41 | struct ipa_mem_buffer hash_bdy; |
| 42 | struct ipa_mem_buffer nhash_bdy; |
| 43 | }; |
| 44 | |
| 45 | /* |
| 46 | * enum ipahal_rt_rule_hdr_type - Header type used in rt rules |
| 47 | * @IPAHAL_RT_RULE_HDR_NONE: No header is used |
| 48 | * @IPAHAL_RT_RULE_HDR_RAW: Raw header is used |
| 49 | * @IPAHAL_RT_RULE_HDR_PROC_CTX: Header Processing context is used |
| 50 | */ |
| 51 | enum ipahal_rt_rule_hdr_type { |
| 52 | IPAHAL_RT_RULE_HDR_NONE, |
| 53 | IPAHAL_RT_RULE_HDR_RAW, |
| 54 | IPAHAL_RT_RULE_HDR_PROC_CTX, |
| 55 | }; |
| 56 | |
| 57 | /* |
| 58 | * struct ipahal_rt_rule_gen_params - Params for generating rt rule |
| 59 | * @ipt: IP family version |
| 60 | * @dst_pipe_idx: Destination pipe index |
| 61 | * @hdr_type: Header type to be used |
| 62 | * @hdr_lcl: Does header on local or system table? |
| 63 | * @hdr_ofst: Offset of the header in the header table |
| 64 | * @priority: Rule priority |
| 65 | * @id: Rule ID |
| 66 | * @rule: Rule info |
| 67 | */ |
| 68 | struct ipahal_rt_rule_gen_params { |
| 69 | enum ipa_ip_type ipt; |
| 70 | int dst_pipe_idx; |
| 71 | enum ipahal_rt_rule_hdr_type hdr_type; |
| 72 | bool hdr_lcl; |
| 73 | u32 hdr_ofst; |
| 74 | u32 priority; |
| 75 | u32 id; |
| 76 | const struct ipa_rt_rule *rule; |
| 77 | }; |
| 78 | |
| 79 | /* |
| 80 | * struct ipahal_rt_rule_entry - Rt rule info parsed from H/W |
| 81 | * @dst_pipe_idx: Destination pipe index |
| 82 | * @hdr_lcl: Does the references header located in sram or system mem? |
| 83 | * @hdr_ofst: Offset of the header in the header table |
| 84 | * @hdr_type: Header type to be used |
| 85 | * @priority: Rule priority |
| 86 | * @retain_hdr: to retain the removed header in header removal |
| 87 | * @id: Rule ID |
| 88 | * @eq_attrib: Equations and their params in the rule |
| 89 | * @rule_size: Rule size in memory |
| 90 | */ |
| 91 | struct ipahal_rt_rule_entry { |
| 92 | int dst_pipe_idx; |
| 93 | bool hdr_lcl; |
| 94 | u32 hdr_ofst; |
| 95 | enum ipahal_rt_rule_hdr_type hdr_type; |
| 96 | u32 priority; |
| 97 | bool retain_hdr; |
| 98 | u32 id; |
| 99 | struct ipa_ipfltri_rule_eq eq_attrib; |
| 100 | u32 rule_size; |
| 101 | }; |
| 102 | |
| 103 | /* |
| 104 | * struct ipahal_flt_rule_gen_params - Params for generating flt rule |
| 105 | * @ipt: IP family version |
| 106 | * @rt_tbl_idx: Routing table the rule pointing to |
| 107 | * @priority: Rule priority |
| 108 | * @id: Rule ID |
| 109 | * @rule: Rule info |
| 110 | */ |
| 111 | struct ipahal_flt_rule_gen_params { |
| 112 | enum ipa_ip_type ipt; |
| 113 | u32 rt_tbl_idx; |
| 114 | u32 priority; |
| 115 | u32 id; |
| 116 | const struct ipa_flt_rule *rule; |
| 117 | }; |
| 118 | |
| 119 | /* |
| 120 | * struct ipahal_flt_rule_entry - Flt rule info parsed from H/W |
| 121 | * @rule: Rule info |
| 122 | * @priority: Rule priority |
| 123 | * @id: Rule ID |
| 124 | * @rule_size: Rule size in memory |
| 125 | */ |
| 126 | struct ipahal_flt_rule_entry { |
| 127 | struct ipa_flt_rule rule; |
| 128 | u32 priority; |
| 129 | u32 id; |
| 130 | u32 rule_size; |
| 131 | }; |
| 132 | |
| 133 | /* Get the H/W table (flt/rt) header width */ |
| 134 | u32 ipahal_get_hw_tbl_hdr_width(void); |
| 135 | |
| 136 | /* Get the H/W local table (SRAM) address alignment |
| 137 | * Tables headers references to local tables via offsets in SRAM |
| 138 | * This function return the alignment of the offset that IPA expects |
| 139 | */ |
| 140 | u32 ipahal_get_lcl_tbl_addr_alignment(void); |
| 141 | |
| 142 | /* |
| 143 | * Rule priority is used to distinguish rules order |
| 144 | * at the integrated table consisting from hashable and |
| 145 | * non-hashable tables. Max priority are rules that once are |
| 146 | * scanned by IPA, IPA will not look for further rules and use it. |
| 147 | */ |
| 148 | int ipahal_get_rule_max_priority(void); |
| 149 | |
| 150 | /* Given a priority, calc and return the next lower one if it is in |
| 151 | * legal range. |
| 152 | */ |
| 153 | int ipahal_rule_decrease_priority(int *prio); |
| 154 | |
| 155 | /* Does the given ID represents rule miss? */ |
| 156 | bool ipahal_is_rule_miss_id(u32 id); |
| 157 | |
| 158 | /* Get rule ID with high bit only asserted |
| 159 | * Used e.g. to create groups of IDs according to this bit |
| 160 | */ |
| 161 | u32 ipahal_get_rule_id_hi_bit(void); |
| 162 | |
| 163 | /* Get the low value possible to be used for rule-id */ |
| 164 | u32 ipahal_get_low_rule_id(void); |
| 165 | |
| 166 | /* |
| 167 | * ipahal_rt_generate_empty_img() - Generate empty route image |
| 168 | * Creates routing header buffer for the given tables number. |
| 169 | * For each table, make it point to the empty table on DDR. |
| 170 | * @tbls_num: Number of tables. For each will have an entry in the header |
| 171 | * @hash_hdr_size: SRAM buf size of the hash tbls hdr. Used for space check |
| 172 | * @nhash_hdr_size: SRAM buf size of the nhash tbls hdr. Used for space check |
| 173 | * @mem: mem object that points to DMA mem representing the hdr structure |
| 174 | */ |
| 175 | int ipahal_rt_generate_empty_img(u32 tbls_num, u32 hash_hdr_size, |
| 176 | u32 nhash_hdr_size, struct ipa_mem_buffer *mem); |
| 177 | |
| 178 | /* |
| 179 | * ipahal_flt_generate_empty_img() - Generate empty filter image |
| 180 | * Creates filter header buffer for the given tables number. |
| 181 | * For each table, make it point to the empty table on DDR. |
| 182 | * @tbls_num: Number of tables. For each will have an entry in the header |
| 183 | * @hash_hdr_size: SRAM buf size of the hash tbls hdr. Used for space check |
| 184 | * @nhash_hdr_size: SRAM buf size of the nhash tbls hdr. Used for space check |
| 185 | * @ep_bitmap: Bitmap representing the EP that has flt tables. The format |
| 186 | * should be: bit0->EP0, bit1->EP1 |
| 187 | * @mem: mem object that points to DMA mem representing the hdr structure |
| 188 | */ |
| 189 | int ipahal_flt_generate_empty_img(u32 tbls_num, u32 hash_hdr_size, |
| 190 | u32 nhash_hdr_size, u64 ep_bitmap, struct ipa_mem_buffer *mem); |
| 191 | |
| 192 | /* |
| 193 | * ipahal_fltrt_allocate_hw_tbl_imgs() - Allocate tbl images DMA structures |
| 194 | * Used usually during commit. |
| 195 | * Allocates header structures and init them to point to empty DDR table |
| 196 | * Allocate body strucutres for local bodies tables |
| 197 | * @params: Parameters for IN and OUT regard the allocation. |
| 198 | */ |
| 199 | int ipahal_fltrt_allocate_hw_tbl_imgs( |
| 200 | struct ipahal_fltrt_alloc_imgs_params *params); |
| 201 | |
| 202 | /* |
| 203 | * ipahal_fltrt_allocate_hw_sys_tbl() - Allocate DMA mem for H/W flt/rt sys tbl |
| 204 | * @tbl_mem: IN/OUT param. size for effective table size. Pointer, for the |
| 205 | * allocated memory. |
| 206 | * |
| 207 | * The size is adapted for needed alignments/borders. |
| 208 | */ |
| 209 | int ipahal_fltrt_allocate_hw_sys_tbl(struct ipa_mem_buffer *tbl_mem); |
| 210 | |
| 211 | /* |
| 212 | * ipahal_fltrt_write_addr_to_hdr() - Fill table header with table address |
| 213 | * Given table addr/offset, adapt it to IPA H/W format and write it |
| 214 | * to given header index. |
| 215 | * @addr: Address or offset to be used |
| 216 | * @hdr_base: base address of header structure to write the address |
| 217 | * @hdr_idx: index of the address in the header structure |
| 218 | * @is_sys: Is it system address or local offset |
| 219 | */ |
| 220 | int ipahal_fltrt_write_addr_to_hdr(u64 addr, void *hdr_base, u32 hdr_idx, |
| 221 | bool is_sys); |
| 222 | |
| 223 | /* |
| 224 | * ipahal_fltrt_read_addr_from_hdr() - Given sram address, read it's |
| 225 | * content (physical address or offset) and parse it. |
| 226 | * @hdr_base: base sram address of the header structure. |
| 227 | * @hdr_idx: index of the header entry line in the header structure. |
| 228 | * @addr: The parsed address - Out parameter |
| 229 | * @is_sys: Is this system or local address - Out parameter |
| 230 | */ |
| 231 | int ipahal_fltrt_read_addr_from_hdr(void *hdr_base, u32 hdr_idx, u64 *addr, |
| 232 | bool *is_sys); |
| 233 | |
| 234 | /* |
| 235 | * ipahal_rt_generate_hw_rule() - generates the routing hardware rule. |
| 236 | * @params: Params for the rule creation. |
| 237 | * @hw_len: Size of the H/W rule to be returned |
| 238 | * @buf: Buffer to build the rule in. If buf is NULL, then the rule will |
| 239 | * be built in internal temp buf. This is used e.g. to get the rule size |
| 240 | * only. |
| 241 | */ |
| 242 | int ipahal_rt_generate_hw_rule(struct ipahal_rt_rule_gen_params *params, |
| 243 | u32 *hw_len, u8 *buf); |
| 244 | |
| 245 | /* |
| 246 | * ipahal_flt_generate_hw_rule() - generates the filtering hardware rule. |
| 247 | * @params: Params for the rule creation. |
| 248 | * @hw_len: Size of the H/W rule to be returned |
| 249 | * @buf: Buffer to build the rule in. If buf is NULL, then the rule will |
| 250 | * be built in internal temp buf. This is used e.g. to get the rule size |
| 251 | * only. |
| 252 | */ |
| 253 | int ipahal_flt_generate_hw_rule(struct ipahal_flt_rule_gen_params *params, |
| 254 | u32 *hw_len, u8 *buf); |
| 255 | |
| 256 | /* |
| 257 | * ipahal_flt_generate_equation() - generate flt rule in equation form |
| 258 | * Will build equation form flt rule from given info. |
| 259 | * @ipt: IP family |
| 260 | * @attrib: Rule attribute to be generated |
| 261 | * @eq_atrb: Equation form generated rule |
| 262 | * Note: Usage example: Pass the generated form to other sub-systems |
| 263 | * for inter-subsystems rules exchange. |
| 264 | */ |
| 265 | int ipahal_flt_generate_equation(enum ipa_ip_type ipt, |
| 266 | const struct ipa_rule_attrib *attrib, |
| 267 | struct ipa_ipfltri_rule_eq *eq_atrb); |
| 268 | |
| 269 | /* |
| 270 | * ipahal_rt_parse_hw_rule() - Parse H/W formated rt rule |
| 271 | * Given the rule address, read the rule info from H/W and parse it. |
| 272 | * @rule_addr: Rule address (virtual memory) |
| 273 | * @rule: Out parameter for parsed rule info |
| 274 | */ |
| 275 | int ipahal_rt_parse_hw_rule(u8 *rule_addr, |
| 276 | struct ipahal_rt_rule_entry *rule); |
| 277 | |
| 278 | /* |
| 279 | * ipahal_flt_parse_hw_rule() - Parse H/W formated flt rule |
| 280 | * Given the rule address, read the rule info from H/W and parse it. |
| 281 | * @rule_addr: Rule address (virtual memory) |
| 282 | * @rule: Out parameter for parsed rule info |
| 283 | */ |
| 284 | int ipahal_flt_parse_hw_rule(u8 *rule_addr, |
| 285 | struct ipahal_flt_rule_entry *rule); |
| 286 | |
| 287 | |
| 288 | #endif /* _IPAHAL_FLTRT_H_ */ |