6 * Mellanox Hermon Infiniband HCA driver
11 #include <gpxe/uaccess.h>
12 #include "mlx_bitops.h"
13 #include "MT25408_PRM.h"
21 #define HERMON_PCI_CONFIG_BAR PCI_BASE_ADDRESS_0
22 #define HERMON_PCI_CONFIG_BAR_SIZE 0x100000
23 #define HERMON_PCI_UAR_BAR PCI_BASE_ADDRESS_2
25 /* Work queue entry and completion queue entry opcodes */
26 #define HERMON_OPCODE_SEND 0x0a
27 #define HERMON_OPCODE_RECV_ERROR 0xfe
28 #define HERMON_OPCODE_SEND_ERROR 0xff
30 /* HCA command register opcodes */
31 #define HERMON_HCR_QUERY_DEV_CAP 0x0003
32 #define HERMON_HCR_QUERY_FW 0x0004
33 #define HERMON_HCR_INIT_HCA 0x0007
34 #define HERMON_HCR_CLOSE_HCA 0x0008
35 #define HERMON_HCR_INIT_PORT 0x0009
36 #define HERMON_HCR_CLOSE_PORT 0x000a
37 #define HERMON_HCR_SW2HW_MPT 0x000d
38 #define HERMON_HCR_WRITE_MTT 0x0011
39 #define HERMON_HCR_MAP_EQ 0x0012
40 #define HERMON_HCR_SW2HW_EQ 0x0013
41 #define HERMON_HCR_HW2SW_EQ 0x0014
42 #define HERMON_HCR_SW2HW_CQ 0x0016
43 #define HERMON_HCR_HW2SW_CQ 0x0017
44 #define HERMON_HCR_RST2INIT_QP 0x0019
45 #define HERMON_HCR_INIT2RTR_QP 0x001a
46 #define HERMON_HCR_RTR2RTS_QP 0x001b
47 #define HERMON_HCR_2RST_QP 0x0021
48 #define HERMON_HCR_MAD_IFC 0x0024
49 #define HERMON_HCR_READ_MCG 0x0025
50 #define HERMON_HCR_WRITE_MCG 0x0026
51 #define HERMON_HCR_MGID_HASH 0x0027
52 #define HERMON_HCR_RUN_FW 0x0ff6
53 #define HERMON_HCR_DISABLE_LAM 0x0ff7
54 #define HERMON_HCR_ENABLE_LAM 0x0ff8
55 #define HERMON_HCR_UNMAP_ICM 0x0ff9
56 #define HERMON_HCR_MAP_ICM 0x0ffa
57 #define HERMON_HCR_UNMAP_ICM_AUX 0x0ffb
58 #define HERMON_HCR_MAP_ICM_AUX 0x0ffc
59 #define HERMON_HCR_SET_ICM_SIZE 0x0ffd
60 #define HERMON_HCR_UNMAP_FA 0x0ffe
61 #define HERMON_HCR_MAP_FA 0x0fff
64 #define HERMON_ST_UD 0x03
67 #define HERMON_MTU_2048 0x04
69 #define HERMON_INVALID_LKEY 0x00000100UL
71 #define HERMON_PAGE_SIZE 4096
73 #define HERMON_DB_POST_SND_OFFSET 0x14
76 * Datatypes that seem to be missing from the autogenerated documentation
79 struct hermonprm_mgm_hash_st {
80 pseudo_bit_t reserved0[0x00020];
82 pseudo_bit_t hash[0x00010];
83 pseudo_bit_t reserved1[0x00010];
84 } __attribute__ (( packed ));
86 struct hermonprm_mcg_entry_st {
87 struct hermonprm_mcg_hdr_st hdr;
88 struct hermonprm_mcg_qp_dw_st qp[8];
89 } __attribute__ (( packed ));
91 struct hermonprm_cq_db_record_st {
92 pseudo_bit_t update_ci[0x00018];
93 pseudo_bit_t reserved0[0x00008];
95 pseudo_bit_t arm_ci[0x00018];
96 pseudo_bit_t cmd[0x00003];
97 pseudo_bit_t reserved1[0x00001];
98 pseudo_bit_t cmd_sn[0x00002];
99 pseudo_bit_t reserved2[0x00002];
100 } __attribute__ (( packed ));
102 struct hermonprm_send_db_register_st {
103 pseudo_bit_t reserved[0x00008];
104 pseudo_bit_t qn[0x00018];
105 } __attribute__ (( packed ));
107 struct hermonprm_scalar_parameter_st {
108 pseudo_bit_t value_hi[0x00020];
110 pseudo_bit_t value[0x00020];
111 } __attribute__ (( packed ));
114 * Wrapper structures for hardware datatypes
118 struct MLX_DECLARE_STRUCT ( hermonprm_completion_queue_context );
119 struct MLX_DECLARE_STRUCT ( hermonprm_completion_queue_entry );
120 struct MLX_DECLARE_STRUCT ( hermonprm_completion_with_error );
121 struct MLX_DECLARE_STRUCT ( hermonprm_cq_db_record );
122 struct MLX_DECLARE_STRUCT ( hermonprm_eqc );
123 struct MLX_DECLARE_STRUCT ( hermonprm_hca_command_register );
124 struct MLX_DECLARE_STRUCT ( hermonprm_init_hca );
125 struct MLX_DECLARE_STRUCT ( hermonprm_init_port );
126 struct MLX_DECLARE_STRUCT ( hermonprm_mad_ifc );
127 struct MLX_DECLARE_STRUCT ( hermonprm_mcg_entry );
128 struct MLX_DECLARE_STRUCT ( hermonprm_mgm_hash );
129 struct MLX_DECLARE_STRUCT ( hermonprm_mpt );
130 struct MLX_DECLARE_STRUCT ( hermonprm_mtt );
131 struct MLX_DECLARE_STRUCT ( hermonprm_qp_db_record );
132 struct MLX_DECLARE_STRUCT ( hermonprm_qp_ee_state_transitions );
133 struct MLX_DECLARE_STRUCT ( hermonprm_query_dev_cap );
134 struct MLX_DECLARE_STRUCT ( hermonprm_query_fw );
135 struct MLX_DECLARE_STRUCT ( hermonprm_queue_pair_ee_context_entry );
136 struct MLX_DECLARE_STRUCT ( hermonprm_scalar_parameter );
137 struct MLX_DECLARE_STRUCT ( hermonprm_send_db_register );
138 struct MLX_DECLARE_STRUCT ( hermonprm_ud_address_vector );
139 struct MLX_DECLARE_STRUCT ( hermonprm_virtual_physical_mapping );
140 struct MLX_DECLARE_STRUCT ( hermonprm_wqe_segment_ctrl_send );
141 struct MLX_DECLARE_STRUCT ( hermonprm_wqe_segment_data_ptr );
142 struct MLX_DECLARE_STRUCT ( hermonprm_wqe_segment_ud );
145 * Composite hardware datatypes
149 struct hermonprm_write_mtt {
150 struct hermonprm_scalar_parameter mtt_base_addr;
151 struct hermonprm_scalar_parameter reserved;
152 struct hermonprm_mtt mtt;
153 } __attribute__ (( packed ));
155 #define HERMON_MAX_GATHER 1
157 struct hermonprm_ud_send_wqe {
158 struct hermonprm_wqe_segment_ctrl_send ctrl;
159 struct hermonprm_wqe_segment_ud ud;
160 struct hermonprm_wqe_segment_data_ptr data[HERMON_MAX_GATHER];
161 } __attribute__ (( packed ));
163 #define HERMON_MAX_SCATTER 1
165 struct hermonprm_recv_wqe {
166 struct hermonprm_wqe_segment_data_ptr data[HERMON_MAX_SCATTER];
167 } __attribute__ (( packed ));
169 union hermonprm_completion_entry {
170 struct hermonprm_completion_queue_entry normal;
171 struct hermonprm_completion_with_error error;
172 } __attribute__ (( packed ));
174 union hermonprm_doorbell_register {
175 struct hermonprm_send_db_register send;
177 } __attribute__ (( packed ));
179 union hermonprm_mad {
180 struct hermonprm_mad_ifc ifc;
182 } __attribute__ (( packed ));
185 * gPXE-specific definitions
189 /** Hermon device capabilitiess */
190 struct hermon_dev_cap {
191 /** CMPT entry size */
192 size_t cmpt_entry_size;
193 /** Number of reserved QPs */
194 unsigned int reserved_qps;
195 /** QP context entry size */
196 size_t qpc_entry_size;
197 /** Alternate path context entry size */
198 size_t altc_entry_size;
199 /** Auxiliary context entry size */
200 size_t auxc_entry_size;
201 /** Number of reserved SRQs */
202 unsigned int reserved_srqs;
203 /** SRQ context entry size */
204 size_t srqc_entry_size;
205 /** Number of reserved CQs */
206 unsigned int reserved_cqs;
207 /** CQ context entry size */
208 size_t cqc_entry_size;
209 /** Number of reserved EQs */
210 unsigned int reserved_eqs;
211 /** EQ context entry size */
212 size_t eqc_entry_size;
213 /** Number of reserved MTTs */
214 unsigned int reserved_mtts;
215 /** MTT entry size */
216 size_t mtt_entry_size;
217 /** Number of reserved MRWs */
218 unsigned int reserved_mrws;
219 /** DMPT entry size */
220 size_t dmpt_entry_size;
221 /** Number of reserved UARs */
222 unsigned int reserved_uars;
225 /** Number of cMPT entries of each type */
226 #define HERMON_CMPT_MAX_ENTRIES ( 1 << 24 )
228 /** Hermon ICM memory map entry */
229 struct hermon_icm_map {
230 /** Offset (virtual address within ICM) */
236 /** Discontiguous regions within Hermon ICM */
237 enum hermon_icm_map_regions {
238 HERMON_ICM_QP_CMPT = 0,
243 HERMON_ICM_NUM_REGIONS
246 /** UAR page for doorbell accesses
248 * Pages 0-127 are reserved for event queue doorbells only, so we use
251 #define HERMON_UAR_PAGE 128
253 /** Maximum number of allocatable MTT entries
255 * This is a policy decision, not a device limit.
257 #define HERMON_MAX_MTTS 64
259 /** A Hermon MTT descriptor */
262 unsigned int mtt_offset;
263 /** Number of pages */
264 unsigned int num_pages;
265 /** MTT base address */
266 unsigned int mtt_base_addr;
267 /** Offset within page */
268 unsigned int page_offset;
271 /** Alignment of Hermon send work queue entries */
272 #define HERMON_SEND_WQE_ALIGN 128
274 /** A Hermon send work queue entry */
275 union hermon_send_wqe {
276 struct hermonprm_ud_send_wqe ud;
277 uint8_t force_align[HERMON_SEND_WQE_ALIGN];
278 } __attribute__ (( packed ));
280 /** A Hermon send work queue */
281 struct hermon_send_work_queue {
282 /** Number of work queue entries, including headroom
284 * Hermon requires us to leave unused space within the send
285 * WQ, so we create a send WQ with more entries than are
286 * requested in the create_qp() call.
288 unsigned int num_wqes;
289 /** Work queue entries */
290 union hermon_send_wqe *wqe;
291 /** Size of work queue */
295 /** Alignment of Hermon receive work queue entries */
296 #define HERMON_RECV_WQE_ALIGN 16
298 /** A Hermon receive work queue entry */
299 union hermon_recv_wqe {
300 struct hermonprm_recv_wqe recv;
301 uint8_t force_align[HERMON_RECV_WQE_ALIGN];
302 } __attribute__ (( packed ));
304 /** A Hermon receive work queue */
305 struct hermon_recv_work_queue {
306 /** Work queue entries */
307 union hermon_recv_wqe *wqe;
308 /** Size of work queue */
311 struct hermonprm_qp_db_record doorbell __attribute__ (( aligned (4) ));
314 /** Maximum number of allocatable queue pairs
316 * This is a policy decision, not a device limit.
318 #define HERMON_MAX_QPS 8
320 /** Base queue pair number */
321 #define HERMON_QPN_BASE 0x550000
323 /** A Hermon queue pair */
324 struct hermon_queue_pair {
325 /** Work queue buffer */
327 /** Size of work queue buffer */
329 /** MTT descriptor */
330 struct hermon_mtt mtt;
331 /** Send work queue */
332 struct hermon_send_work_queue send;
333 /** Receive work queue */
334 struct hermon_recv_work_queue recv;
337 /** Maximum number of allocatable completion queues
339 * This is a policy decision, not a device limit.
341 #define HERMON_MAX_CQS 8
343 /** A Hermon completion queue */
344 struct hermon_completion_queue {
345 /** Completion queue entries */
346 union hermonprm_completion_entry *cqe;
347 /** Size of completion queue */
349 /** MTT descriptor */
350 struct hermon_mtt mtt;
352 struct hermonprm_cq_db_record doorbell __attribute__ (( aligned (8) ));
355 /** Maximum number of allocatable event queues
357 * This is a policy decision, not a device limit.
359 #define HERMON_MAX_EQS 4
361 /** A Hermon resource bitmask */
362 typedef uint32_t hermon_bitmask_t;
364 /** Size of a hermon resource bitmask */
365 #define HERMON_BITMASK_SIZE(max_entries) \
366 ( ( (max_entries) + ( 8 * sizeof ( hermon_bitmask_t ) ) - 1 ) / \
367 ( 8 * sizeof ( hermon_bitmask_t ) ) )
369 /** A Hermon device */
371 /** PCI configuration registers */
373 /** PCI user Access Region */
376 /** Command toggle */
378 /** Command input mailbox */
380 /** Command output mailbox */
383 /** Firmware area in external memory */
384 userptr_t firmware_area;
386 struct hermon_icm_map icm_map[HERMON_ICM_NUM_REGIONS];
392 * Used to get unrestricted memory access.
394 unsigned long reserved_lkey;
396 /** Completion queue in-use bitmask */
397 hermon_bitmask_t cq_inuse[ HERMON_BITMASK_SIZE ( HERMON_MAX_CQS ) ];
398 /** Queue pair in-use bitmask */
399 hermon_bitmask_t qp_inuse[ HERMON_BITMASK_SIZE ( HERMON_MAX_QPS ) ];
400 /** MTT entry in-use bitmask */
401 hermon_bitmask_t mtt_inuse[ HERMON_BITMASK_SIZE ( HERMON_MAX_MTTS ) ];
403 /** Device capabilities */
404 struct hermon_dev_cap cap;
407 /** Global protection domain */
408 #define HERMON_GLOBAL_PD 0x123456
410 /** Memory key prefix */
411 #define HERMON_MKEY_PREFIX 0x77000000UL
418 #define HERMON_HCR_BASE 0x80680
419 #define HERMON_HCR_REG(x) ( HERMON_HCR_BASE + 4 * (x) )
420 #define HERMON_HCR_MAX_WAIT_MS 2000
421 #define HERMON_MBOX_ALIGN 4096
422 #define HERMON_MBOX_SIZE 512
424 /* HCA command is split into
427 * bit 12 Input uses mailbox
428 * bit 13 Output uses mailbox
429 * bits 22:14 Input parameter length (in dwords)
430 * bits 31:23 Output parameter length (in dwords)
432 * Encoding the information in this way allows us to cut out several
433 * parameters to the hermon_command() call.
435 #define HERMON_HCR_IN_MBOX 0x00001000UL
436 #define HERMON_HCR_OUT_MBOX 0x00002000UL
437 #define HERMON_HCR_OPCODE( _command ) ( (_command) & 0xfff )
438 #define HERMON_HCR_IN_LEN( _command ) ( ( (_command) >> 12 ) & 0x7fc )
439 #define HERMON_HCR_OUT_LEN( _command ) ( ( (_command) >> 21 ) & 0x7fc )
441 /** Build HCR command from component parts */
442 #define HERMON_HCR_INOUT_CMD( _opcode, _in_mbox, _in_len, \
443 _out_mbox, _out_len ) \
445 ( (_in_mbox) ? HERMON_HCR_IN_MBOX : 0 ) | \
446 ( ( (_in_len) / 4 ) << 14 ) | \
447 ( (_out_mbox) ? HERMON_HCR_OUT_MBOX : 0 ) | \
448 ( ( (_out_len) / 4 ) << 23 ) )
450 #define HERMON_HCR_IN_CMD( _opcode, _in_mbox, _in_len ) \
451 HERMON_HCR_INOUT_CMD ( _opcode, _in_mbox, _in_len, 0, 0 )
453 #define HERMON_HCR_OUT_CMD( _opcode, _out_mbox, _out_len ) \
454 HERMON_HCR_INOUT_CMD ( _opcode, 0, 0, _out_mbox, _out_len )
456 #define HERMON_HCR_VOID_CMD( _opcode ) \
457 HERMON_HCR_INOUT_CMD ( _opcode, 0, 0, 0, 0 )
459 #endif /* _HERMON_H */