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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 | /* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright IBM Corp. 2000, 2008 * Author(s): Utz Bacher <utz.bacher@de.ibm.com> * Jan Glauber <jang@linux.vnet.ibm.com> * */ #ifndef __QDIO_H__ #define __QDIO_H__ #include <linux/interrupt.h> #include <asm/cio.h> #include <asm/ccwdev.h> /* only use 4 queues to save some cachelines */ #define QDIO_MAX_QUEUES_PER_IRQ 4 #define QDIO_MAX_BUFFERS_PER_Q 128 #define QDIO_MAX_BUFFERS_MASK (QDIO_MAX_BUFFERS_PER_Q - 1) #define QDIO_BUFNR(num) ((num) & QDIO_MAX_BUFFERS_MASK) #define QDIO_MAX_ELEMENTS_PER_BUFFER 16 #define QDIO_QETH_QFMT 0 #define QDIO_ZFCP_QFMT 1 #define QDIO_IQDIO_QFMT 2 /** * struct qdesfmt0 - queue descriptor, format 0 * @sliba: absolute address of storage list information block * @sla: absolute address of storage list * @slsba: absolute address of storage list state block * @akey: access key for SLIB * @bkey: access key for SL * @ckey: access key for SBALs * @dkey: access key for SLSB */ struct qdesfmt0 { u64 sliba; u64 sla; u64 slsba; u32 : 32; u32 akey : 4; u32 bkey : 4; u32 ckey : 4; u32 dkey : 4; u32 : 16; } __attribute__ ((packed)); #define QDR_AC_MULTI_BUFFER_ENABLE 0x01 /** * struct qdr - queue description record (QDR) * @qfmt: queue format * @ac: adapter characteristics * @iqdcnt: input queue descriptor count * @oqdcnt: output queue descriptor count * @iqdsz: input queue descriptor size * @oqdsz: output queue descriptor size * @qiba: absolute address of queue information block * @qkey: queue information block key * @qdf0: queue descriptions */ struct qdr { u32 qfmt : 8; u32 : 16; u32 ac : 8; u32 : 8; u32 iqdcnt : 8; u32 : 8; u32 oqdcnt : 8; u32 : 8; u32 iqdsz : 8; u32 : 8; u32 oqdsz : 8; /* private: */ u32 res[9]; /* public: */ u64 qiba; u32 : 32; u32 qkey : 4; u32 : 28; struct qdesfmt0 qdf0[126]; } __packed __aligned(PAGE_SIZE); #define QIB_AC_OUTBOUND_PCI_SUPPORTED 0x40 #define QIB_RFLAGS_ENABLE_QEBSM 0x80 #define QIB_RFLAGS_ENABLE_DATA_DIV 0x02 /** * struct qib - queue information block (QIB) * @qfmt: queue format * @pfmt: implementation dependent parameter format * @rflags: QEBSM * @ac: adapter characteristics * @isliba: logical address of first input SLIB * @osliba: logical address of first output SLIB * @ebcnam: adapter identifier in EBCDIC * @parm: implementation dependent parameters */ struct qib { u32 qfmt : 8; u32 pfmt : 8; u32 rflags : 8; u32 ac : 8; u32 : 32; u64 isliba; u64 osliba; u32 : 32; u32 : 32; u8 ebcnam[8]; /* private: */ u8 res[88]; /* public: */ u8 parm[128]; } __attribute__ ((packed, aligned(256))); /** * struct slibe - storage list information block element (SLIBE) * @parms: implementation dependent parameters */ struct slibe { u64 parms; }; /** * struct qaob - queue asynchronous operation block * @res0: reserved parameters * @res1: reserved parameter * @res2: reserved parameter * @res3: reserved parameter * @aorc: asynchronous operation return code * @flags: internal flags * @cbtbs: control block type * @sb_count: number of storage blocks * @sba: storage block element addresses * @dcount: size of storage block elements * @user0: user definable value * @res4: reserved parameter * @user1: user definable value */ struct qaob { u64 res0[6]; u8 res1; u8 res2; u8 res3; u8 aorc; u8 flags; u16 cbtbs; u8 sb_count; u64 sba[QDIO_MAX_ELEMENTS_PER_BUFFER]; u16 dcount[QDIO_MAX_ELEMENTS_PER_BUFFER]; u64 user0; u64 res4[2]; u8 user1[16]; } __attribute__ ((packed, aligned(256))); /** * struct slib - storage list information block (SLIB) * @nsliba: next SLIB address (if any) * @sla: SL address * @slsba: SLSB address * @slibe: SLIB elements */ struct slib { u64 nsliba; u64 sla; u64 slsba; /* private: */ u8 res[1000]; /* public: */ struct slibe slibe[QDIO_MAX_BUFFERS_PER_Q]; } __attribute__ ((packed, aligned(2048))); #define SBAL_EFLAGS_LAST_ENTRY 0x40 #define SBAL_EFLAGS_CONTIGUOUS 0x20 #define SBAL_EFLAGS_FIRST_FRAG 0x04 #define SBAL_EFLAGS_MIDDLE_FRAG 0x08 #define SBAL_EFLAGS_LAST_FRAG 0x0c #define SBAL_EFLAGS_MASK 0x6f #define SBAL_SFLAGS0_PCI_REQ 0x40 #define SBAL_SFLAGS0_DATA_CONTINUATION 0x20 /* Awesome OpenFCP extensions */ #define SBAL_SFLAGS0_TYPE_STATUS 0x00 #define SBAL_SFLAGS0_TYPE_WRITE 0x08 #define SBAL_SFLAGS0_TYPE_READ 0x10 #define SBAL_SFLAGS0_TYPE_WRITE_READ 0x18 #define SBAL_SFLAGS0_MORE_SBALS 0x04 #define SBAL_SFLAGS0_COMMAND 0x02 #define SBAL_SFLAGS0_LAST_SBAL 0x00 #define SBAL_SFLAGS0_ONLY_SBAL SBAL_SFLAGS0_COMMAND #define SBAL_SFLAGS0_MIDDLE_SBAL SBAL_SFLAGS0_MORE_SBALS #define SBAL_SFLAGS0_FIRST_SBAL (SBAL_SFLAGS0_MORE_SBALS | SBAL_SFLAGS0_COMMAND) /** * struct qdio_buffer_element - SBAL entry * @eflags: SBAL entry flags * @scount: SBAL count * @sflags: whole SBAL flags * @length: length * @addr: absolute data address */ struct qdio_buffer_element { u8 eflags; /* private: */ u8 res1; /* public: */ u8 scount; u8 sflags; u32 length; u64 addr; } __attribute__ ((packed, aligned(16))); /** * struct qdio_buffer - storage block address list (SBAL) * @element: SBAL entries */ struct qdio_buffer { struct qdio_buffer_element element[QDIO_MAX_ELEMENTS_PER_BUFFER]; } __attribute__ ((packed, aligned(256))); /** * struct sl_element - storage list entry * @sbal: absolute SBAL address */ struct sl_element { u64 sbal; } __attribute__ ((packed)); /** * struct sl - storage list (SL) * @element: SL entries */ struct sl { struct sl_element element[QDIO_MAX_BUFFERS_PER_Q]; } __attribute__ ((packed, aligned(1024))); /** * struct slsb - storage list state block (SLSB) * @val: state per buffer */ struct slsb { u8 val[QDIO_MAX_BUFFERS_PER_Q]; } __attribute__ ((packed, aligned(256))); /* qdio adapter-characteristics-1 flag */ #define CHSC_AC1_INITIATE_INPUTQ 0x80 #define AC1_SIGA_INPUT_NEEDED 0x40 /* process input queues */ #define AC1_SIGA_OUTPUT_NEEDED 0x20 /* process output queues */ #define AC1_SIGA_SYNC_NEEDED 0x10 /* ask hypervisor to sync */ #define AC1_AUTOMATIC_SYNC_ON_THININT 0x08 /* set by hypervisor */ #define AC1_AUTOMATIC_SYNC_ON_OUT_PCI 0x04 /* set by hypervisor */ #define AC1_SC_QEBSM_AVAILABLE 0x02 /* available for subchannel */ #define AC1_SC_QEBSM_ENABLED 0x01 /* enabled for subchannel */ #define CHSC_AC2_MULTI_BUFFER_AVAILABLE 0x0080 #define CHSC_AC2_MULTI_BUFFER_ENABLED 0x0040 #define CHSC_AC2_DATA_DIV_AVAILABLE 0x0010 #define CHSC_AC2_SNIFFER_AVAILABLE 0x0008 #define CHSC_AC2_DATA_DIV_ENABLED 0x0002 #define CHSC_AC3_FORMAT2_CQ_AVAILABLE 0x8000 struct qdio_ssqd_desc { u8 flags; u8:8; u16 sch; u8 qfmt; u8 parm; u8 qdioac1; u8 sch_class; u8 pcnt; u8 icnt; u8:8; u8 ocnt; u8:8; u8 mbccnt; u16 qdioac2; u64 sch_token; u8 mro; u8 mri; u16 qdioac3; u16:16; u8:8; u8 mmwc; } __attribute__ ((packed)); /* params are: ccw_device, qdio_error, queue_number, first element processed, number of elements processed, int_parm */ typedef void qdio_handler_t(struct ccw_device *, unsigned int, int, int, int, unsigned long); /* qdio errors reported through the queue handlers: */ #define QDIO_ERROR_ACTIVATE 0x0001 #define QDIO_ERROR_GET_BUF_STATE 0x0002 #define QDIO_ERROR_SET_BUF_STATE 0x0004 /* extra info for completed SBALs: */ #define QDIO_ERROR_SLSB_STATE 0x0100 #define QDIO_ERROR_SLSB_PENDING 0x0200 /* for qdio_cleanup */ #define QDIO_FLAG_CLEANUP_USING_CLEAR 0x01 #define QDIO_FLAG_CLEANUP_USING_HALT 0x02 /** * struct qdio_initialize - qdio initialization data * @q_format: queue format * @qdr_ac: feature flags to set * @qib_param_field_format: format for qib_parm_field * @qib_param_field: pointer to 128 bytes or NULL, if no param field * @qib_rflags: rflags to set * @no_input_qs: number of input queues * @no_output_qs: number of output queues * @input_handler: handler to be called for input queues, and device-wide errors * @output_handler: handler to be called for output queues * @irq_poll: Data IRQ polling handler * @scan_threshold: # of in-use buffers that triggers scan on output queue * @int_parm: interruption parameter * @input_sbal_addr_array: per-queue array, each element points to 128 SBALs * @output_sbal_addr_array: per-queue array, each element points to 128 SBALs */ struct qdio_initialize { unsigned char q_format; unsigned char qdr_ac; unsigned int qib_param_field_format; unsigned char *qib_param_field; unsigned char qib_rflags; unsigned int no_input_qs; unsigned int no_output_qs; qdio_handler_t *input_handler; qdio_handler_t *output_handler; void (*irq_poll)(struct ccw_device *cdev, unsigned long data); unsigned long int_parm; struct qdio_buffer ***input_sbal_addr_array; struct qdio_buffer ***output_sbal_addr_array; }; int qdio_alloc_buffers(struct qdio_buffer **buf, unsigned int count); void qdio_free_buffers(struct qdio_buffer **buf, unsigned int count); void qdio_reset_buffers(struct qdio_buffer **buf, unsigned int count); extern int qdio_allocate(struct ccw_device *cdev, unsigned int no_input_qs, unsigned int no_output_qs); extern int qdio_establish(struct ccw_device *cdev, struct qdio_initialize *init_data); extern int qdio_activate(struct ccw_device *); extern int qdio_start_irq(struct ccw_device *cdev); extern int qdio_stop_irq(struct ccw_device *cdev); extern int qdio_inspect_input_queue(struct ccw_device *cdev, unsigned int nr, unsigned int *bufnr, unsigned int *error); extern int qdio_inspect_output_queue(struct ccw_device *cdev, unsigned int nr, unsigned int *bufnr, unsigned int *error); extern int qdio_add_bufs_to_input_queue(struct ccw_device *cdev, unsigned int q_nr, unsigned int bufnr, unsigned int count); extern int qdio_add_bufs_to_output_queue(struct ccw_device *cdev, unsigned int q_nr, unsigned int bufnr, unsigned int count, struct qaob *aob); extern int qdio_shutdown(struct ccw_device *, int); extern int qdio_free(struct ccw_device *); extern int qdio_get_ssqd_desc(struct ccw_device *, struct qdio_ssqd_desc *); #endif /* __QDIO_H__ */ |