2 * Copyright Altera Corporation (C) 2012-2015
4 * SPDX-License-Identifier: BSD-3-Clause
9 #include <asm/arch/sdram.h>
10 #include "sequencer.h"
11 #include "sequencer_auto.h"
12 #include "sequencer_auto_ac_init.h"
13 #include "sequencer_auto_inst_init.h"
14 #include "sequencer_defines.h"
16 static void scc_mgr_load_dqs_for_write_group(uint32_t write_group
);
18 static struct socfpga_sdr_rw_load_manager
*sdr_rw_load_mgr_regs
=
19 (struct socfpga_sdr_rw_load_manager
*)(BASE_RW_MGR
+ 0x800);
21 static struct socfpga_sdr_rw_load_jump_manager
*sdr_rw_load_jump_mgr_regs
=
22 (struct socfpga_sdr_rw_load_jump_manager
*)(BASE_RW_MGR
+ 0xC00);
24 static struct socfpga_sdr_reg_file
*sdr_reg_file
=
25 (struct socfpga_sdr_reg_file
*)(BASE_REG_FILE
);
27 static struct socfpga_sdr_scc_mgr
*sdr_scc_mgr
=
28 (struct socfpga_sdr_scc_mgr
*)(BASE_SCC_MGR
+ 0x0E00);
30 static struct socfpga_phy_mgr_cmd
*phy_mgr_cmd
=
31 (struct socfpga_phy_mgr_cmd
*)(BASE_PHY_MGR
);
33 static struct socfpga_phy_mgr_cfg
*phy_mgr_cfg
=
34 (struct socfpga_phy_mgr_cfg
*)(BASE_PHY_MGR
+ 0x4000);
36 static struct socfpga_data_mgr
*data_mgr
=
37 (struct socfpga_data_mgr
*)(BASE_DATA_MGR
);
40 #define MGR_SELECT_MASK 0xf8000
43 * In order to reduce ROM size, most of the selectable calibration steps are
44 * decided at compile time based on the user's calibration mode selection,
45 * as captured by the STATIC_CALIB_STEPS selection below.
47 * However, to support simulation-time selection of fast simulation mode, where
48 * we skip everything except the bare minimum, we need a few of the steps to
49 * be dynamic. In those cases, we either use the DYNAMIC_CALIB_STEPS for the
50 * check, which is based on the rtl-supplied value, or we dynamically compute
51 * the value to use based on the dynamically-chosen calibration mode
55 #define STATIC_IN_RTL_SIM 0
56 #define STATIC_SKIP_DELAY_LOOPS 0
58 #define STATIC_CALIB_STEPS (STATIC_IN_RTL_SIM | CALIB_SKIP_FULL_TEST | \
59 STATIC_SKIP_DELAY_LOOPS)
61 /* calibration steps requested by the rtl */
62 uint16_t dyn_calib_steps
;
65 * To make CALIB_SKIP_DELAY_LOOPS a dynamic conditional option
66 * instead of static, we use boolean logic to select between
67 * non-skip and skip values
69 * The mask is set to include all bits when not-skipping, but is
73 uint16_t skip_delay_mask
; /* mask off bits when skipping/not-skipping */
75 #define SKIP_DELAY_LOOP_VALUE_OR_ZERO(non_skip_value) \
76 ((non_skip_value) & skip_delay_mask)
79 struct param_type
*param
;
80 uint32_t curr_shadow_reg
;
82 static uint32_t rw_mgr_mem_calibrate_write_test(uint32_t rank_bgn
,
83 uint32_t write_group
, uint32_t use_dm
,
84 uint32_t all_correct
, uint32_t *bit_chk
, uint32_t all_ranks
);
86 static u32
sdr_get_addr(u32
*base
)
88 u32 addr
= (u32
)base
& MGR_SELECT_MASK
;
92 addr
= (((u32
)base
>> 8) & (1 << 6)) | ((u32
)base
& 0x3f) |
93 SDR_PHYGRP_PHYMGRGRP_ADDRESS
;
96 addr
= ((u32
)base
& 0x1fff) | SDR_PHYGRP_RWMGRGRP_ADDRESS
;
99 addr
= ((u32
)base
& 0x7ff) | SDR_PHYGRP_DATAMGRGRP_ADDRESS
;
102 addr
= ((u32
)base
& 0xfff) | SDR_PHYGRP_SCCGRP_ADDRESS
;
105 addr
= ((u32
)base
& 0x7ff) | SDR_PHYGRP_REGFILEGRP_ADDRESS
;
108 addr
= ((u32
)base
& 0xfff) | SDR_CTRLGRP_ADDRESS
;
117 static void set_failing_group_stage(uint32_t group
, uint32_t stage
,
121 * Only set the global stage if there was not been any other
124 if (gbl
->error_stage
== CAL_STAGE_NIL
) {
125 gbl
->error_substage
= substage
;
126 gbl
->error_stage
= stage
;
127 gbl
->error_group
= group
;
131 static void reg_file_set_group(uint32_t set_group
)
133 u32 addr
= sdr_get_addr(&sdr_reg_file
->cur_stage
);
135 /* Read the current group and stage */
136 uint32_t cur_stage_group
= readl(SOCFPGA_SDR_ADDRESS
+ addr
);
138 /* Clear the group */
139 cur_stage_group
&= 0x0000FFFF;
142 cur_stage_group
|= (set_group
<< 16);
144 /* Write the data back */
145 writel(cur_stage_group
, SOCFPGA_SDR_ADDRESS
+ addr
);
148 static void reg_file_set_stage(uint32_t set_stage
)
150 u32 addr
= sdr_get_addr(&sdr_reg_file
->cur_stage
);
151 /* Read the current group and stage */
152 uint32_t cur_stage_group
= readl(SOCFPGA_SDR_ADDRESS
+ addr
);
154 /* Clear the stage and substage */
155 cur_stage_group
&= 0xFFFF0000;
158 cur_stage_group
|= (set_stage
& 0x000000FF);
160 /* Write the data back */
161 writel(cur_stage_group
, SOCFPGA_SDR_ADDRESS
+ addr
);
164 static void reg_file_set_sub_stage(uint32_t set_sub_stage
)
166 u32 addr
= sdr_get_addr(&sdr_reg_file
->cur_stage
);
167 /* Read the current group and stage */
168 uint32_t cur_stage_group
= readl(SOCFPGA_SDR_ADDRESS
+ addr
);
170 /* Clear the substage */
171 cur_stage_group
&= 0xFFFF00FF;
173 /* Set the sub stage */
174 cur_stage_group
|= ((set_sub_stage
<< 8) & 0x0000FF00);
176 /* Write the data back */
177 writel(cur_stage_group
, SOCFPGA_SDR_ADDRESS
+ addr
);
180 static void initialize(void)
182 u32 addr
= sdr_get_addr(&phy_mgr_cfg
->mux_sel
);
184 debug("%s:%d\n", __func__
, __LINE__
);
185 /* USER calibration has control over path to memory */
187 * In Hard PHY this is a 2-bit control:
191 writel(0x3, SOCFPGA_SDR_ADDRESS
+ addr
);
193 /* USER memory clock is not stable we begin initialization */
194 addr
= sdr_get_addr(&phy_mgr_cfg
->reset_mem_stbl
);
195 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
197 /* USER calibration status all set to zero */
198 addr
= sdr_get_addr(&phy_mgr_cfg
->cal_status
);
199 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
201 addr
= sdr_get_addr(&phy_mgr_cfg
->cal_debug_info
);
202 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
204 if ((dyn_calib_steps
& CALIB_SKIP_ALL
) != CALIB_SKIP_ALL
) {
205 param
->read_correct_mask_vg
= ((uint32_t)1 <<
206 (RW_MGR_MEM_DQ_PER_READ_DQS
/
207 RW_MGR_MEM_VIRTUAL_GROUPS_PER_READ_DQS
)) - 1;
208 param
->write_correct_mask_vg
= ((uint32_t)1 <<
209 (RW_MGR_MEM_DQ_PER_READ_DQS
/
210 RW_MGR_MEM_VIRTUAL_GROUPS_PER_READ_DQS
)) - 1;
211 param
->read_correct_mask
= ((uint32_t)1 <<
212 RW_MGR_MEM_DQ_PER_READ_DQS
) - 1;
213 param
->write_correct_mask
= ((uint32_t)1 <<
214 RW_MGR_MEM_DQ_PER_WRITE_DQS
) - 1;
215 param
->dm_correct_mask
= ((uint32_t)1 <<
216 (RW_MGR_MEM_DATA_WIDTH
/ RW_MGR_MEM_DATA_MASK_WIDTH
))
221 static void set_rank_and_odt_mask(uint32_t rank
, uint32_t odt_mode
)
223 uint32_t odt_mask_0
= 0;
224 uint32_t odt_mask_1
= 0;
225 uint32_t cs_and_odt_mask
;
228 if (odt_mode
== RW_MGR_ODT_MODE_READ_WRITE
) {
229 if (RW_MGR_MEM_NUMBER_OF_RANKS
== 1) {
237 } else if (RW_MGR_MEM_NUMBER_OF_RANKS
== 2) {
239 if (RW_MGR_MEM_NUMBER_OF_CS_PER_DIMM
== 1) {
240 /* - Dual-Slot , Single-Rank
241 * (1 chip-select per DIMM)
243 * - RDIMM, 4 total CS (2 CS per DIMM)
245 * Since MEM_NUMBER_OF_RANKS is 2 they are
247 * with 2 CS each (special for RDIMM)
248 * Read: Turn on ODT on the opposite rank
249 * Write: Turn on ODT on all ranks
251 odt_mask_0
= 0x3 & ~(1 << rank
);
255 * USER - Single-Slot , Dual-rank DIMMs
256 * (2 chip-selects per DIMM)
257 * USER Read: Turn on ODT off on all ranks
258 * USER Write: Turn on ODT on active rank
261 odt_mask_1
= 0x3 & (1 << rank
);
266 * ----------+-----------------------+
269 * Read From +-----------------------+
270 * Rank | 3 | 2 | 1 | 0 |
271 * ----------+-----+-----+-----+-----+
272 * 0 | 0 | 1 | 0 | 0 |
273 * 1 | 1 | 0 | 0 | 0 |
274 * 2 | 0 | 0 | 0 | 1 |
275 * 3 | 0 | 0 | 1 | 0 |
276 * ----------+-----+-----+-----+-----+
279 * ----------+-----------------------+
282 * Write To +-----------------------+
283 * Rank | 3 | 2 | 1 | 0 |
284 * ----------+-----+-----+-----+-----+
285 * 0 | 0 | 1 | 0 | 1 |
286 * 1 | 1 | 0 | 1 | 0 |
287 * 2 | 0 | 1 | 0 | 1 |
288 * 3 | 1 | 0 | 1 | 0 |
289 * ----------+-----+-----+-----+-----+
316 (0xFF & ~(1 << rank
)) |
317 ((0xFF & odt_mask_0
) << 8) |
318 ((0xFF & odt_mask_1
) << 16);
319 addr
= sdr_get_addr((u32
*)RW_MGR_SET_CS_AND_ODT_MASK
);
320 writel(cs_and_odt_mask
, SOCFPGA_SDR_ADDRESS
+ addr
);
323 static void scc_mgr_initialize(void)
325 u32 addr
= sdr_get_addr((u32
*)SCC_MGR_HHP_RFILE
);
328 * Clear register file for HPS
329 * 16 (2^4) is the size of the full register file in the scc mgr:
330 * RFILE_DEPTH = log2(MEM_DQ_PER_DQS + 1 + MEM_DM_PER_DQS +
331 * MEM_IF_READ_DQS_WIDTH - 1) + 1;
334 for (i
= 0; i
< 16; i
++) {
335 debug_cond(DLEVEL
== 1, "%s:%d: Clearing SCC RFILE index %u\n",
336 __func__
, __LINE__
, i
);
337 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
+ (i
<< 2));
341 static void scc_mgr_set_dqs_bus_in_delay(uint32_t read_group
,
344 u32 addr
= sdr_get_addr((u32
*)SCC_MGR_DQS_IN_DELAY
);
346 /* Load the setting in the SCC manager */
347 writel(delay
, SOCFPGA_SDR_ADDRESS
+ addr
+ (read_group
<< 2));
350 static void scc_mgr_set_dqs_io_in_delay(uint32_t write_group
,
353 u32 addr
= sdr_get_addr((u32
*)SCC_MGR_IO_IN_DELAY
);
355 writel(delay
, SOCFPGA_SDR_ADDRESS
+ addr
+ (RW_MGR_MEM_DQ_PER_WRITE_DQS
<< 2));
358 static void scc_mgr_set_dqs_en_phase(uint32_t read_group
, uint32_t phase
)
360 u32 addr
= sdr_get_addr((u32
*)SCC_MGR_DQS_EN_PHASE
);
362 /* Load the setting in the SCC manager */
363 writel(phase
, SOCFPGA_SDR_ADDRESS
+ addr
+ (read_group
<< 2));
366 static void scc_mgr_set_dqs_en_phase_all_ranks(uint32_t read_group
,
370 uint32_t update_scan_chains
;
373 for (r
= 0; r
< RW_MGR_MEM_NUMBER_OF_RANKS
;
374 r
+= NUM_RANKS_PER_SHADOW_REG
) {
376 * USER although the h/w doesn't support different phases per
377 * shadow register, for simplicity our scc manager modeling
378 * keeps different phase settings per shadow reg, and it's
379 * important for us to keep them in sync to match h/w.
380 * for efficiency, the scan chain update should occur only
383 update_scan_chains
= (r
== 0) ? 1 : 0;
385 scc_mgr_set_dqs_en_phase(read_group
, phase
);
387 if (update_scan_chains
) {
388 addr
= sdr_get_addr(&sdr_scc_mgr
->dqs_ena
);
389 writel(read_group
, SOCFPGA_SDR_ADDRESS
+ addr
);
391 addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
392 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
397 static void scc_mgr_set_dqdqs_output_phase(uint32_t write_group
,
400 u32 addr
= sdr_get_addr((u32
*)SCC_MGR_DQDQS_OUT_PHASE
);
402 /* Load the setting in the SCC manager */
403 writel(phase
, SOCFPGA_SDR_ADDRESS
+ addr
+ (write_group
<< 2));
406 static void scc_mgr_set_dqdqs_output_phase_all_ranks(uint32_t write_group
,
410 uint32_t update_scan_chains
;
413 for (r
= 0; r
< RW_MGR_MEM_NUMBER_OF_RANKS
;
414 r
+= NUM_RANKS_PER_SHADOW_REG
) {
416 * USER although the h/w doesn't support different phases per
417 * shadow register, for simplicity our scc manager modeling
418 * keeps different phase settings per shadow reg, and it's
419 * important for us to keep them in sync to match h/w.
420 * for efficiency, the scan chain update should occur only
423 update_scan_chains
= (r
== 0) ? 1 : 0;
425 scc_mgr_set_dqdqs_output_phase(write_group
, phase
);
427 if (update_scan_chains
) {
428 addr
= sdr_get_addr(&sdr_scc_mgr
->dqs_ena
);
429 writel(write_group
, SOCFPGA_SDR_ADDRESS
+ addr
);
431 addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
432 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
437 static void scc_mgr_set_dqs_en_delay(uint32_t read_group
, uint32_t delay
)
439 uint32_t addr
= sdr_get_addr((u32
*)SCC_MGR_DQS_EN_DELAY
);
441 /* Load the setting in the SCC manager */
442 writel(delay
+ IO_DQS_EN_DELAY_OFFSET
, SOCFPGA_SDR_ADDRESS
+ addr
+
446 static void scc_mgr_set_dqs_en_delay_all_ranks(uint32_t read_group
,
452 for (r
= 0; r
< RW_MGR_MEM_NUMBER_OF_RANKS
;
453 r
+= NUM_RANKS_PER_SHADOW_REG
) {
454 scc_mgr_set_dqs_en_delay(read_group
, delay
);
456 addr
= sdr_get_addr(&sdr_scc_mgr
->dqs_ena
);
457 writel(read_group
, SOCFPGA_SDR_ADDRESS
+ addr
);
459 * In shadow register mode, the T11 settings are stored in
460 * registers in the core, which are updated by the DQS_ENA
461 * signals. Not issuing the SCC_MGR_UPD command allows us to
462 * save lots of rank switching overhead, by calling
463 * select_shadow_regs_for_update with update_scan_chains
466 addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
467 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
470 * In shadow register mode, the T11 settings are stored in
471 * registers in the core, which are updated by the DQS_ENA
472 * signals. Not issuing the SCC_MGR_UPD command allows us to
473 * save lots of rank switching overhead, by calling
474 * select_shadow_regs_for_update with update_scan_chains
477 addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
478 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
481 static void scc_mgr_set_oct_out1_delay(uint32_t write_group
, uint32_t delay
)
484 uint32_t addr
= sdr_get_addr((u32
*)SCC_MGR_OCT_OUT1_DELAY
);
487 * Load the setting in the SCC manager
488 * Although OCT affects only write data, the OCT delay is controlled
489 * by the DQS logic block which is instantiated once per read group.
490 * For protocols where a write group consists of multiple read groups,
491 * the setting must be set multiple times.
493 for (read_group
= write_group
* RW_MGR_MEM_IF_READ_DQS_WIDTH
/
494 RW_MGR_MEM_IF_WRITE_DQS_WIDTH
;
495 read_group
< (write_group
+ 1) * RW_MGR_MEM_IF_READ_DQS_WIDTH
/
496 RW_MGR_MEM_IF_WRITE_DQS_WIDTH
; ++read_group
)
497 writel(delay
, SOCFPGA_SDR_ADDRESS
+ addr
+ (read_group
<< 2));
500 static void scc_mgr_set_dq_out1_delay(uint32_t write_group
,
501 uint32_t dq_in_group
, uint32_t delay
)
503 uint32_t addr
= sdr_get_addr((u32
*)SCC_MGR_IO_OUT1_DELAY
);
505 /* Load the setting in the SCC manager */
506 writel(delay
, SOCFPGA_SDR_ADDRESS
+ addr
+ (dq_in_group
<< 2));
509 static void scc_mgr_set_dq_in_delay(uint32_t write_group
,
510 uint32_t dq_in_group
, uint32_t delay
)
512 uint32_t addr
= sdr_get_addr((u32
*)SCC_MGR_IO_IN_DELAY
);
514 /* Load the setting in the SCC manager */
515 writel(delay
, SOCFPGA_SDR_ADDRESS
+ addr
+ (dq_in_group
<< 2));
518 static void scc_mgr_set_hhp_extras(void)
521 * Load the fixed setting in the SCC manager
522 * bits: 0:0 = 1'b1 - dqs bypass
523 * bits: 1:1 = 1'b1 - dq bypass
524 * bits: 4:2 = 3'b001 - rfifo_mode
525 * bits: 6:5 = 2'b01 - rfifo clock_select
526 * bits: 7:7 = 1'b0 - separate gating from ungating setting
527 * bits: 8:8 = 1'b0 - separate OE from Output delay setting
529 uint32_t value
= (0<<8) | (0<<7) | (1<<5) | (1<<2) | (1<<1) | (1<<0);
530 uint32_t addr
= sdr_get_addr((u32
*)SCC_MGR_HHP_GLOBALS
);
532 writel(value
, SOCFPGA_SDR_ADDRESS
+ addr
+ SCC_MGR_HHP_EXTRAS_OFFSET
);
535 static void scc_mgr_set_dqs_out1_delay(uint32_t write_group
,
538 uint32_t addr
= sdr_get_addr((u32
*)SCC_MGR_IO_OUT1_DELAY
);
540 /* Load the setting in the SCC manager */
541 writel(delay
, SOCFPGA_SDR_ADDRESS
+ addr
+ (RW_MGR_MEM_DQ_PER_WRITE_DQS
<< 2));
544 static void scc_mgr_set_dm_out1_delay(uint32_t write_group
,
545 uint32_t dm
, uint32_t delay
)
547 uint32_t addr
= sdr_get_addr((u32
*)SCC_MGR_IO_OUT1_DELAY
);
549 /* Load the setting in the SCC manager */
550 writel(delay
, SOCFPGA_SDR_ADDRESS
+ addr
+
551 ((RW_MGR_MEM_DQ_PER_WRITE_DQS
+ 1 + dm
) << 2));
555 * USER Zero all DQS config
556 * TODO: maybe rename to scc_mgr_zero_dqs_config (or something)
558 static void scc_mgr_zero_all(void)
564 * USER Zero all DQS config settings, across all groups and all
567 for (r
= 0; r
< RW_MGR_MEM_NUMBER_OF_RANKS
; r
+=
568 NUM_RANKS_PER_SHADOW_REG
) {
569 for (i
= 0; i
< RW_MGR_MEM_IF_READ_DQS_WIDTH
; i
++) {
571 * The phases actually don't exist on a per-rank basis,
572 * but there's no harm updating them several times, so
573 * let's keep the code simple.
575 scc_mgr_set_dqs_bus_in_delay(i
, IO_DQS_IN_RESERVE
);
576 scc_mgr_set_dqs_en_phase(i
, 0);
577 scc_mgr_set_dqs_en_delay(i
, 0);
580 for (i
= 0; i
< RW_MGR_MEM_IF_WRITE_DQS_WIDTH
; i
++) {
581 scc_mgr_set_dqdqs_output_phase(i
, 0);
582 /* av/cv don't have out2 */
583 scc_mgr_set_oct_out1_delay(i
, IO_DQS_OUT_RESERVE
);
587 /* multicast to all DQS group enables */
588 addr
= sdr_get_addr(&sdr_scc_mgr
->dqs_ena
);
589 writel(0xff, SOCFPGA_SDR_ADDRESS
+ addr
);
591 addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
592 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
595 static void scc_set_bypass_mode(uint32_t write_group
, uint32_t mode
)
598 /* mode = 0 : Do NOT bypass - Half Rate Mode */
599 /* mode = 1 : Bypass - Full Rate Mode */
601 /* only need to set once for all groups, pins, dq, dqs, dm */
602 if (write_group
== 0) {
603 debug_cond(DLEVEL
== 1, "%s:%d Setting HHP Extras\n", __func__
,
605 scc_mgr_set_hhp_extras();
606 debug_cond(DLEVEL
== 1, "%s:%d Done Setting HHP Extras\n",
609 /* multicast to all DQ enables */
610 addr
= sdr_get_addr(&sdr_scc_mgr
->dq_ena
);
611 writel(0xff, SOCFPGA_SDR_ADDRESS
+ addr
);
613 addr
= sdr_get_addr(&sdr_scc_mgr
->dm_ena
);
614 writel(0xff, SOCFPGA_SDR_ADDRESS
+ addr
);
616 /* update current DQS IO enable */
617 addr
= sdr_get_addr(&sdr_scc_mgr
->dqs_io_ena
);
618 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
620 /* update the DQS logic */
621 addr
= sdr_get_addr(&sdr_scc_mgr
->dqs_ena
);
622 writel(write_group
, SOCFPGA_SDR_ADDRESS
+ addr
);
625 addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
626 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
629 static void scc_mgr_zero_group(uint32_t write_group
, uint32_t test_begin
,
635 for (r
= 0; r
< RW_MGR_MEM_NUMBER_OF_RANKS
; r
+=
636 NUM_RANKS_PER_SHADOW_REG
) {
637 /* Zero all DQ config settings */
638 for (i
= 0; i
< RW_MGR_MEM_DQ_PER_WRITE_DQS
; i
++) {
639 scc_mgr_set_dq_out1_delay(write_group
, i
, 0);
641 scc_mgr_set_dq_in_delay(write_group
, i
, 0);
644 /* multicast to all DQ enables */
645 addr
= sdr_get_addr(&sdr_scc_mgr
->dq_ena
);
646 writel(0xff, SOCFPGA_SDR_ADDRESS
+ addr
);
648 /* Zero all DM config settings */
649 for (i
= 0; i
< RW_MGR_NUM_DM_PER_WRITE_GROUP
; i
++) {
650 scc_mgr_set_dm_out1_delay(write_group
, i
, 0);
653 /* multicast to all DM enables */
654 addr
= sdr_get_addr(&sdr_scc_mgr
->dm_ena
);
655 writel(0xff, SOCFPGA_SDR_ADDRESS
+ addr
);
657 /* zero all DQS io settings */
659 scc_mgr_set_dqs_io_in_delay(write_group
, 0);
660 /* av/cv don't have out2 */
661 scc_mgr_set_dqs_out1_delay(write_group
, IO_DQS_OUT_RESERVE
);
662 scc_mgr_set_oct_out1_delay(write_group
, IO_DQS_OUT_RESERVE
);
663 scc_mgr_load_dqs_for_write_group(write_group
);
665 /* multicast to all DQS IO enables (only 1) */
666 addr
= sdr_get_addr(&sdr_scc_mgr
->dqs_io_ena
);
667 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
669 /* hit update to zero everything */
670 addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
671 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
675 /* load up dqs config settings */
676 static void scc_mgr_load_dqs(uint32_t dqs
)
678 uint32_t addr
= sdr_get_addr(&sdr_scc_mgr
->dqs_ena
);
680 writel(dqs
, SOCFPGA_SDR_ADDRESS
+ addr
);
683 static void scc_mgr_load_dqs_for_write_group(uint32_t write_group
)
686 uint32_t addr
= sdr_get_addr(&sdr_scc_mgr
->dqs_ena
);
688 * Although OCT affects only write data, the OCT delay is controlled
689 * by the DQS logic block which is instantiated once per read group.
690 * For protocols where a write group consists of multiple read groups,
691 * the setting must be scanned multiple times.
693 for (read_group
= write_group
* RW_MGR_MEM_IF_READ_DQS_WIDTH
/
694 RW_MGR_MEM_IF_WRITE_DQS_WIDTH
;
695 read_group
< (write_group
+ 1) * RW_MGR_MEM_IF_READ_DQS_WIDTH
/
696 RW_MGR_MEM_IF_WRITE_DQS_WIDTH
; ++read_group
)
697 writel(read_group
, SOCFPGA_SDR_ADDRESS
+ addr
);
700 /* load up dqs io config settings */
701 static void scc_mgr_load_dqs_io(void)
703 uint32_t addr
= sdr_get_addr(&sdr_scc_mgr
->dqs_io_ena
);
705 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
708 /* load up dq config settings */
709 static void scc_mgr_load_dq(uint32_t dq_in_group
)
711 uint32_t addr
= sdr_get_addr(&sdr_scc_mgr
->dq_ena
);
713 writel(dq_in_group
, SOCFPGA_SDR_ADDRESS
+ addr
);
716 /* load up dm config settings */
717 static void scc_mgr_load_dm(uint32_t dm
)
719 uint32_t addr
= sdr_get_addr(&sdr_scc_mgr
->dm_ena
);
721 writel(dm
, SOCFPGA_SDR_ADDRESS
+ addr
);
725 * apply and load a particular input delay for the DQ pins in a group
726 * group_bgn is the index of the first dq pin (in the write group)
728 static void scc_mgr_apply_group_dq_in_delay(uint32_t write_group
,
729 uint32_t group_bgn
, uint32_t delay
)
733 for (i
= 0, p
= group_bgn
; i
< RW_MGR_MEM_DQ_PER_READ_DQS
; i
++, p
++) {
734 scc_mgr_set_dq_in_delay(write_group
, p
, delay
);
739 /* apply and load a particular output delay for the DQ pins in a group */
740 static void scc_mgr_apply_group_dq_out1_delay(uint32_t write_group
,
746 for (i
= 0, p
= group_bgn
; i
< RW_MGR_MEM_DQ_PER_WRITE_DQS
; i
++, p
++) {
747 scc_mgr_set_dq_out1_delay(write_group
, i
, delay1
);
752 /* apply and load a particular output delay for the DM pins in a group */
753 static void scc_mgr_apply_group_dm_out1_delay(uint32_t write_group
,
758 for (i
= 0; i
< RW_MGR_NUM_DM_PER_WRITE_GROUP
; i
++) {
759 scc_mgr_set_dm_out1_delay(write_group
, i
, delay1
);
765 /* apply and load delay on both DQS and OCT out1 */
766 static void scc_mgr_apply_group_dqs_io_and_oct_out1(uint32_t write_group
,
769 scc_mgr_set_dqs_out1_delay(write_group
, delay
);
770 scc_mgr_load_dqs_io();
772 scc_mgr_set_oct_out1_delay(write_group
, delay
);
773 scc_mgr_load_dqs_for_write_group(write_group
);
776 /* apply a delay to the entire output side: DQ, DM, DQS, OCT */
777 static void scc_mgr_apply_group_all_out_delay_add(uint32_t write_group
,
781 uint32_t i
, p
, new_delay
;
784 for (i
= 0, p
= group_bgn
; i
< RW_MGR_MEM_DQ_PER_WRITE_DQS
; i
++, p
++) {
785 new_delay
= READ_SCC_DQ_OUT2_DELAY
;
788 if (new_delay
> IO_IO_OUT2_DELAY_MAX
) {
789 debug_cond(DLEVEL
== 1, "%s:%d (%u, %u, %u) DQ[%u,%u]:\
790 %u > %lu => %lu", __func__
, __LINE__
,
791 write_group
, group_bgn
, delay
, i
, p
, new_delay
,
792 (long unsigned int)IO_IO_OUT2_DELAY_MAX
,
793 (long unsigned int)IO_IO_OUT2_DELAY_MAX
);
794 new_delay
= IO_IO_OUT2_DELAY_MAX
;
801 for (i
= 0; i
< RW_MGR_NUM_DM_PER_WRITE_GROUP
; i
++) {
802 new_delay
= READ_SCC_DM_IO_OUT2_DELAY
;
805 if (new_delay
> IO_IO_OUT2_DELAY_MAX
) {
806 debug_cond(DLEVEL
== 1, "%s:%d (%u, %u, %u) DM[%u]:\
807 %u > %lu => %lu\n", __func__
, __LINE__
,
808 write_group
, group_bgn
, delay
, i
, new_delay
,
809 (long unsigned int)IO_IO_OUT2_DELAY_MAX
,
810 (long unsigned int)IO_IO_OUT2_DELAY_MAX
);
811 new_delay
= IO_IO_OUT2_DELAY_MAX
;
818 new_delay
= READ_SCC_DQS_IO_OUT2_DELAY
;
821 if (new_delay
> IO_IO_OUT2_DELAY_MAX
) {
822 debug_cond(DLEVEL
== 1, "%s:%d (%u, %u, %u) DQS: %u > %d => %d;"
823 " adding %u to OUT1\n", __func__
, __LINE__
,
824 write_group
, group_bgn
, delay
, new_delay
,
825 IO_IO_OUT2_DELAY_MAX
, IO_IO_OUT2_DELAY_MAX
,
826 new_delay
- IO_IO_OUT2_DELAY_MAX
);
827 scc_mgr_set_dqs_out1_delay(write_group
, new_delay
-
828 IO_IO_OUT2_DELAY_MAX
);
829 new_delay
= IO_IO_OUT2_DELAY_MAX
;
832 scc_mgr_load_dqs_io();
835 new_delay
= READ_SCC_OCT_OUT2_DELAY
;
838 if (new_delay
> IO_IO_OUT2_DELAY_MAX
) {
839 debug_cond(DLEVEL
== 1, "%s:%d (%u, %u, %u) DQS: %u > %d => %d;"
840 " adding %u to OUT1\n", __func__
, __LINE__
,
841 write_group
, group_bgn
, delay
, new_delay
,
842 IO_IO_OUT2_DELAY_MAX
, IO_IO_OUT2_DELAY_MAX
,
843 new_delay
- IO_IO_OUT2_DELAY_MAX
);
844 scc_mgr_set_oct_out1_delay(write_group
, new_delay
-
845 IO_IO_OUT2_DELAY_MAX
);
846 new_delay
= IO_IO_OUT2_DELAY_MAX
;
849 scc_mgr_load_dqs_for_write_group(write_group
);
853 * USER apply a delay to the entire output side (DQ, DM, DQS, OCT)
856 static void scc_mgr_apply_group_all_out_delay_add_all_ranks(
857 uint32_t write_group
, uint32_t group_bgn
, uint32_t delay
)
860 uint32_t addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
862 for (r
= 0; r
< RW_MGR_MEM_NUMBER_OF_RANKS
;
863 r
+= NUM_RANKS_PER_SHADOW_REG
) {
864 scc_mgr_apply_group_all_out_delay_add(write_group
,
866 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
870 /* optimization used to recover some slots in ddr3 inst_rom */
871 /* could be applied to other protocols if we wanted to */
872 static void set_jump_as_return(void)
874 uint32_t addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr0
);
877 * to save space, we replace return with jump to special shared
878 * RETURN instruction so we set the counter to large value so that
881 writel(0xff, SOCFPGA_SDR_ADDRESS
+ addr
);
882 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add0
);
883 writel(RW_MGR_RETURN
, SOCFPGA_SDR_ADDRESS
+ addr
);
887 * should always use constants as argument to ensure all computations are
888 * performed at compile time
890 static void delay_for_n_mem_clocks(const uint32_t clocks
)
898 debug("%s:%d: clocks=%u ... start\n", __func__
, __LINE__
, clocks
);
901 afi_clocks
= (clocks
+ AFI_RATE_RATIO
-1) / AFI_RATE_RATIO
;
902 /* scale (rounding up) to get afi clocks */
905 * Note, we don't bother accounting for being off a little bit
906 * because of a few extra instructions in outer loops
907 * Note, the loops have a test at the end, and do the test before
908 * the decrement, and so always perform the loop
909 * 1 time more than the counter value
911 if (afi_clocks
== 0) {
913 } else if (afi_clocks
<= 0x100) {
914 inner
= afi_clocks
-1;
917 } else if (afi_clocks
<= 0x10000) {
919 outer
= (afi_clocks
-1) >> 8;
924 c_loop
= (afi_clocks
-1) >> 16;
928 * rom instructions are structured as follows:
930 * IDLE_LOOP2: jnz cntr0, TARGET_A
931 * IDLE_LOOP1: jnz cntr1, TARGET_B
934 * so, when doing nested loops, TARGET_A is set to IDLE_LOOP2, and
935 * TARGET_B is set to IDLE_LOOP2 as well
937 * if we have no outer loop, though, then we can use IDLE_LOOP1 only,
938 * and set TARGET_B to IDLE_LOOP1 and we skip IDLE_LOOP2 entirely
940 * a little confusing, but it helps save precious space in the inst_rom
941 * and sequencer rom and keeps the delays more accurate and reduces
944 if (afi_clocks
<= 0x100) {
945 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr1
);
946 writel(SKIP_DELAY_LOOP_VALUE_OR_ZERO(inner
), SOCFPGA_SDR_ADDRESS
+ addr
);
948 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add1
);
949 writel(RW_MGR_IDLE_LOOP1
, SOCFPGA_SDR_ADDRESS
+ addr
);
951 addr
= sdr_get_addr((u32
*)RW_MGR_RUN_SINGLE_GROUP
);
952 writel(RW_MGR_IDLE_LOOP1
, SOCFPGA_SDR_ADDRESS
+ addr
);
954 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr0
);
955 writel(SKIP_DELAY_LOOP_VALUE_OR_ZERO(inner
), SOCFPGA_SDR_ADDRESS
+ addr
);
957 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr1
);
958 writel(SKIP_DELAY_LOOP_VALUE_OR_ZERO(outer
), SOCFPGA_SDR_ADDRESS
+ addr
);
960 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add0
);
961 writel(RW_MGR_IDLE_LOOP2
, SOCFPGA_SDR_ADDRESS
+ addr
);
963 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add1
);
964 writel(RW_MGR_IDLE_LOOP2
, SOCFPGA_SDR_ADDRESS
+ addr
);
966 /* hack to get around compiler not being smart enough */
967 if (afi_clocks
<= 0x10000) {
968 /* only need to run once */
969 addr
= sdr_get_addr((u32
*)RW_MGR_RUN_SINGLE_GROUP
);
970 writel(RW_MGR_IDLE_LOOP2
, SOCFPGA_SDR_ADDRESS
+ addr
);
973 addr
= sdr_get_addr((u32
*)RW_MGR_RUN_SINGLE_GROUP
);
974 writel(RW_MGR_IDLE_LOOP2
, SOCFPGA_SDR_ADDRESS
+ addr
);
975 } while (c_loop
-- != 0);
978 debug("%s:%d clocks=%u ... end\n", __func__
, __LINE__
, clocks
);
981 static void rw_mgr_mem_initialize(void)
986 debug("%s:%d\n", __func__
, __LINE__
);
988 /* The reset / cke part of initialization is broadcasted to all ranks */
989 addr
= sdr_get_addr((u32
*)RW_MGR_SET_CS_AND_ODT_MASK
);
990 writel(RW_MGR_RANK_ALL
, SOCFPGA_SDR_ADDRESS
+ addr
);
993 * Here's how you load register for a loop
994 * Counters are located @ 0x800
995 * Jump address are located @ 0xC00
996 * For both, registers 0 to 3 are selected using bits 3 and 2, like
997 * in 0x800, 0x804, 0x808, 0x80C and 0xC00, 0xC04, 0xC08, 0xC0C
998 * I know this ain't pretty, but Avalon bus throws away the 2 least
1002 /* start with memory RESET activated */
1007 * 200us @ 266MHz (3.75 ns) ~ 54000 clock cycles
1008 * If a and b are the number of iteration in 2 nested loops
1009 * it takes the following number of cycles to complete the operation:
1010 * number_of_cycles = ((2 + n) * a + 2) * b
1011 * where n is the number of instruction in the inner loop
1012 * One possible solution is n = 0 , a = 256 , b = 106 => a = FF,
1017 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr0
);
1018 writel(SKIP_DELAY_LOOP_VALUE_OR_ZERO(SEQ_TINIT_CNTR0_VAL
),
1019 SOCFPGA_SDR_ADDRESS
+ addr
);
1020 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr1
);
1021 writel(SKIP_DELAY_LOOP_VALUE_OR_ZERO(SEQ_TINIT_CNTR1_VAL
),
1022 SOCFPGA_SDR_ADDRESS
+ addr
);
1023 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr2
);
1024 writel(SKIP_DELAY_LOOP_VALUE_OR_ZERO(SEQ_TINIT_CNTR2_VAL
),
1025 SOCFPGA_SDR_ADDRESS
+ addr
);
1027 /* Load jump address */
1028 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add0
);
1029 writel(RW_MGR_INIT_RESET_0_CKE_0
, SOCFPGA_SDR_ADDRESS
+ addr
);
1031 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add1
);
1032 writel(RW_MGR_INIT_RESET_0_CKE_0
, SOCFPGA_SDR_ADDRESS
+ addr
);
1034 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add2
);
1035 writel(RW_MGR_INIT_RESET_0_CKE_0
, SOCFPGA_SDR_ADDRESS
+ addr
);
1037 /* Execute count instruction */
1038 addr
= sdr_get_addr((u32
*)RW_MGR_RUN_SINGLE_GROUP
);
1039 writel(RW_MGR_INIT_RESET_0_CKE_0
, SOCFPGA_SDR_ADDRESS
+ addr
);
1041 /* indicate that memory is stable */
1042 addr
= sdr_get_addr(&phy_mgr_cfg
->reset_mem_stbl
);
1043 writel(1, SOCFPGA_SDR_ADDRESS
+ addr
);
1046 * transition the RESET to high
1051 * 500us @ 266MHz (3.75 ns) ~ 134000 clock cycles
1052 * If a and b are the number of iteration in 2 nested loops
1053 * it takes the following number of cycles to complete the operation
1054 * number_of_cycles = ((2 + n) * a + 2) * b
1055 * where n is the number of instruction in the inner loop
1056 * One possible solution is n = 2 , a = 131 , b = 256 => a = 83,
1061 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr0
);
1062 writel(SKIP_DELAY_LOOP_VALUE_OR_ZERO(SEQ_TRESET_CNTR0_VAL
),
1063 SOCFPGA_SDR_ADDRESS
+ addr
);
1064 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr1
);
1065 writel(SKIP_DELAY_LOOP_VALUE_OR_ZERO(SEQ_TRESET_CNTR1_VAL
),
1066 SOCFPGA_SDR_ADDRESS
+ addr
);
1067 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr2
);
1068 writel(SKIP_DELAY_LOOP_VALUE_OR_ZERO(SEQ_TRESET_CNTR2_VAL
),
1069 SOCFPGA_SDR_ADDRESS
+ addr
);
1071 /* Load jump address */
1072 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add0
);
1073 writel(RW_MGR_INIT_RESET_1_CKE_0
, SOCFPGA_SDR_ADDRESS
+ addr
);
1074 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add1
);
1075 writel(RW_MGR_INIT_RESET_1_CKE_0
, SOCFPGA_SDR_ADDRESS
+ addr
);
1076 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add2
);
1077 writel(RW_MGR_INIT_RESET_1_CKE_0
, SOCFPGA_SDR_ADDRESS
+ addr
);
1079 addr
= sdr_get_addr((u32
*)RW_MGR_RUN_SINGLE_GROUP
);
1080 writel(RW_MGR_INIT_RESET_1_CKE_0
, SOCFPGA_SDR_ADDRESS
+ addr
);
1082 /* bring up clock enable */
1084 /* tXRP < 250 ck cycles */
1085 delay_for_n_mem_clocks(250);
1087 for (r
= 0; r
< RW_MGR_MEM_NUMBER_OF_RANKS
; r
++) {
1088 if (param
->skip_ranks
[r
]) {
1089 /* request to skip the rank */
1094 set_rank_and_odt_mask(r
, RW_MGR_ODT_MODE_OFF
);
1097 * USER Use Mirror-ed commands for odd ranks if address
1100 if ((RW_MGR_MEM_ADDRESS_MIRRORING
>> r
) & 0x1) {
1101 set_jump_as_return();
1102 addr
= sdr_get_addr((u32
*)RW_MGR_RUN_SINGLE_GROUP
);
1103 writel(RW_MGR_MRS2_MIRR
, SOCFPGA_SDR_ADDRESS
+ addr
);
1104 delay_for_n_mem_clocks(4);
1105 set_jump_as_return();
1106 writel(RW_MGR_MRS3_MIRR
, SOCFPGA_SDR_ADDRESS
+ addr
);
1107 delay_for_n_mem_clocks(4);
1108 set_jump_as_return();
1109 writel(RW_MGR_MRS1_MIRR
, SOCFPGA_SDR_ADDRESS
+ addr
);
1110 delay_for_n_mem_clocks(4);
1111 set_jump_as_return();
1112 writel(RW_MGR_MRS0_DLL_RESET_MIRR
, SOCFPGA_SDR_ADDRESS
+ addr
);
1114 set_jump_as_return();
1115 addr
= sdr_get_addr((u32
*)RW_MGR_RUN_SINGLE_GROUP
);
1116 writel(RW_MGR_MRS2
, SOCFPGA_SDR_ADDRESS
+ addr
);
1117 delay_for_n_mem_clocks(4);
1118 set_jump_as_return();
1119 writel(RW_MGR_MRS3
, SOCFPGA_SDR_ADDRESS
+ addr
);
1120 delay_for_n_mem_clocks(4);
1121 set_jump_as_return();
1122 writel(RW_MGR_MRS1
, SOCFPGA_SDR_ADDRESS
+ addr
);
1123 set_jump_as_return();
1124 writel(RW_MGR_MRS0_DLL_RESET
, SOCFPGA_SDR_ADDRESS
+ addr
);
1126 set_jump_as_return();
1127 addr
= sdr_get_addr((u32
*)RW_MGR_RUN_SINGLE_GROUP
);
1128 writel(RW_MGR_ZQCL
, SOCFPGA_SDR_ADDRESS
+ addr
);
1130 /* tZQinit = tDLLK = 512 ck cycles */
1131 delay_for_n_mem_clocks(512);
1136 * At the end of calibration we have to program the user settings in, and
1137 * USER hand off the memory to the user.
1139 static void rw_mgr_mem_handoff(void)
1144 debug("%s:%d\n", __func__
, __LINE__
);
1145 for (r
= 0; r
< RW_MGR_MEM_NUMBER_OF_RANKS
; r
++) {
1146 if (param
->skip_ranks
[r
])
1147 /* request to skip the rank */
1150 set_rank_and_odt_mask(r
, RW_MGR_ODT_MODE_OFF
);
1152 /* precharge all banks ... */
1153 addr
= sdr_get_addr((u32
*)RW_MGR_RUN_SINGLE_GROUP
);
1154 writel(RW_MGR_PRECHARGE_ALL
, SOCFPGA_SDR_ADDRESS
+ addr
);
1156 /* load up MR settings specified by user */
1159 * Use Mirror-ed commands for odd ranks if address
1162 addr
= sdr_get_addr((u32
*)RW_MGR_RUN_SINGLE_GROUP
);
1163 if ((RW_MGR_MEM_ADDRESS_MIRRORING
>> r
) & 0x1) {
1164 set_jump_as_return();
1165 writel(RW_MGR_MRS2_MIRR
, SOCFPGA_SDR_ADDRESS
+ addr
);
1166 delay_for_n_mem_clocks(4);
1167 set_jump_as_return();
1168 writel(RW_MGR_MRS3_MIRR
, SOCFPGA_SDR_ADDRESS
+ addr
);
1169 delay_for_n_mem_clocks(4);
1170 set_jump_as_return();
1171 writel(RW_MGR_MRS1_MIRR
, SOCFPGA_SDR_ADDRESS
+ addr
);
1172 delay_for_n_mem_clocks(4);
1173 set_jump_as_return();
1174 writel(RW_MGR_MRS0_USER_MIRR
, SOCFPGA_SDR_ADDRESS
+ addr
);
1176 set_jump_as_return();
1177 writel(RW_MGR_MRS2
, SOCFPGA_SDR_ADDRESS
+ addr
);
1178 delay_for_n_mem_clocks(4);
1179 set_jump_as_return();
1180 writel(RW_MGR_MRS3
, SOCFPGA_SDR_ADDRESS
+ addr
);
1181 delay_for_n_mem_clocks(4);
1182 set_jump_as_return();
1183 writel(RW_MGR_MRS1
, SOCFPGA_SDR_ADDRESS
+ addr
);
1184 delay_for_n_mem_clocks(4);
1185 set_jump_as_return();
1186 writel(RW_MGR_MRS0_USER
, SOCFPGA_SDR_ADDRESS
+ addr
);
1189 * USER need to wait tMOD (12CK or 15ns) time before issuing
1190 * other commands, but we will have plenty of NIOS cycles before
1191 * actual handoff so its okay.
1197 * performs a guaranteed read on the patterns we are going to use during a
1198 * read test to ensure memory works
1200 static uint32_t rw_mgr_mem_calibrate_read_test_patterns(uint32_t rank_bgn
,
1201 uint32_t group
, uint32_t num_tries
, uint32_t *bit_chk
,
1205 uint32_t correct_mask_vg
;
1206 uint32_t tmp_bit_chk
;
1207 uint32_t rank_end
= all_ranks
? RW_MGR_MEM_NUMBER_OF_RANKS
:
1208 (rank_bgn
+ NUM_RANKS_PER_SHADOW_REG
);
1210 uint32_t base_rw_mgr
;
1212 *bit_chk
= param
->read_correct_mask
;
1213 correct_mask_vg
= param
->read_correct_mask_vg
;
1215 for (r
= rank_bgn
; r
< rank_end
; r
++) {
1216 if (param
->skip_ranks
[r
])
1217 /* request to skip the rank */
1221 set_rank_and_odt_mask(r
, RW_MGR_ODT_MODE_READ_WRITE
);
1223 /* Load up a constant bursts of read commands */
1224 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr0
);
1225 writel(0x20, SOCFPGA_SDR_ADDRESS
+ addr
);
1226 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add0
);
1227 writel(RW_MGR_GUARANTEED_READ
, SOCFPGA_SDR_ADDRESS
+ addr
);
1229 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr1
);
1230 writel(0x20, SOCFPGA_SDR_ADDRESS
+ addr
);
1231 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add1
);
1232 writel(RW_MGR_GUARANTEED_READ_CONT
, SOCFPGA_SDR_ADDRESS
+ addr
);
1235 for (vg
= RW_MGR_MEM_VIRTUAL_GROUPS_PER_READ_DQS
-1; ; vg
--) {
1236 /* reset the fifos to get pointers to known state */
1238 addr
= sdr_get_addr(&phy_mgr_cmd
->fifo_reset
);
1239 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
1240 addr
= sdr_get_addr((u32
*)RW_MGR_RESET_READ_DATAPATH
);
1241 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
1243 tmp_bit_chk
= tmp_bit_chk
<< (RW_MGR_MEM_DQ_PER_READ_DQS
1244 / RW_MGR_MEM_VIRTUAL_GROUPS_PER_READ_DQS
);
1246 addr
= sdr_get_addr((u32
*)RW_MGR_RUN_SINGLE_GROUP
);
1247 writel(RW_MGR_GUARANTEED_READ
, SOCFPGA_SDR_ADDRESS
+ addr
+
1248 ((group
* RW_MGR_MEM_VIRTUAL_GROUPS_PER_READ_DQS
+
1251 addr
= sdr_get_addr((u32
*)BASE_RW_MGR
);
1252 base_rw_mgr
= readl(SOCFPGA_SDR_ADDRESS
+ addr
);
1253 tmp_bit_chk
= tmp_bit_chk
| (correct_mask_vg
& (~base_rw_mgr
));
1258 *bit_chk
&= tmp_bit_chk
;
1261 addr
= sdr_get_addr((u32
*)RW_MGR_RUN_SINGLE_GROUP
);
1262 writel(RW_MGR_CLEAR_DQS_ENABLE
, SOCFPGA_SDR_ADDRESS
+ addr
+ (group
<< 2));
1264 set_rank_and_odt_mask(0, RW_MGR_ODT_MODE_OFF
);
1265 debug_cond(DLEVEL
== 1, "%s:%d test_load_patterns(%u,ALL) => (%u == %u) =>\
1266 %lu\n", __func__
, __LINE__
, group
, *bit_chk
, param
->read_correct_mask
,
1267 (long unsigned int)(*bit_chk
== param
->read_correct_mask
));
1268 return *bit_chk
== param
->read_correct_mask
;
1271 static uint32_t rw_mgr_mem_calibrate_read_test_patterns_all_ranks
1272 (uint32_t group
, uint32_t num_tries
, uint32_t *bit_chk
)
1274 return rw_mgr_mem_calibrate_read_test_patterns(0, group
,
1275 num_tries
, bit_chk
, 1);
1278 /* load up the patterns we are going to use during a read test */
1279 static void rw_mgr_mem_calibrate_read_load_patterns(uint32_t rank_bgn
,
1284 uint32_t rank_end
= all_ranks
? RW_MGR_MEM_NUMBER_OF_RANKS
:
1285 (rank_bgn
+ NUM_RANKS_PER_SHADOW_REG
);
1287 debug("%s:%d\n", __func__
, __LINE__
);
1288 for (r
= rank_bgn
; r
< rank_end
; r
++) {
1289 if (param
->skip_ranks
[r
])
1290 /* request to skip the rank */
1294 set_rank_and_odt_mask(r
, RW_MGR_ODT_MODE_READ_WRITE
);
1296 /* Load up a constant bursts */
1297 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr0
);
1298 writel(0x20, SOCFPGA_SDR_ADDRESS
+ addr
);
1300 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add0
);
1301 writel(RW_MGR_GUARANTEED_WRITE_WAIT0
, SOCFPGA_SDR_ADDRESS
+ addr
);
1303 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr1
);
1304 writel(0x20, SOCFPGA_SDR_ADDRESS
+ addr
);
1306 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add1
);
1307 writel(RW_MGR_GUARANTEED_WRITE_WAIT1
, SOCFPGA_SDR_ADDRESS
+ addr
);
1309 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr2
);
1310 writel(0x04, SOCFPGA_SDR_ADDRESS
+ addr
);
1312 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add2
);
1313 writel(RW_MGR_GUARANTEED_WRITE_WAIT2
, SOCFPGA_SDR_ADDRESS
+ addr
);
1315 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr3
);
1316 writel(0x04, SOCFPGA_SDR_ADDRESS
+ addr
);
1318 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add3
);
1319 writel(RW_MGR_GUARANTEED_WRITE_WAIT3
, SOCFPGA_SDR_ADDRESS
+ addr
);
1321 addr
= sdr_get_addr((u32
*)RW_MGR_RUN_SINGLE_GROUP
);
1322 writel(RW_MGR_GUARANTEED_WRITE
, SOCFPGA_SDR_ADDRESS
+ addr
);
1325 set_rank_and_odt_mask(0, RW_MGR_ODT_MODE_OFF
);
1329 * try a read and see if it returns correct data back. has dummy reads
1330 * inserted into the mix used to align dqs enable. has more thorough checks
1331 * than the regular read test.
1333 static uint32_t rw_mgr_mem_calibrate_read_test(uint32_t rank_bgn
, uint32_t group
,
1334 uint32_t num_tries
, uint32_t all_correct
, uint32_t *bit_chk
,
1335 uint32_t all_groups
, uint32_t all_ranks
)
1338 uint32_t correct_mask_vg
;
1339 uint32_t tmp_bit_chk
;
1340 uint32_t rank_end
= all_ranks
? RW_MGR_MEM_NUMBER_OF_RANKS
:
1341 (rank_bgn
+ NUM_RANKS_PER_SHADOW_REG
);
1343 uint32_t base_rw_mgr
;
1345 *bit_chk
= param
->read_correct_mask
;
1346 correct_mask_vg
= param
->read_correct_mask_vg
;
1348 uint32_t quick_read_mode
= (((STATIC_CALIB_STEPS
) &
1349 CALIB_SKIP_DELAY_SWEEPS
) && ENABLE_SUPER_QUICK_CALIBRATION
);
1351 for (r
= rank_bgn
; r
< rank_end
; r
++) {
1352 if (param
->skip_ranks
[r
])
1353 /* request to skip the rank */
1357 set_rank_and_odt_mask(r
, RW_MGR_ODT_MODE_READ_WRITE
);
1359 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr1
);
1360 writel(0x10, SOCFPGA_SDR_ADDRESS
+ addr
);
1362 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add1
);
1363 writel(RW_MGR_READ_B2B_WAIT1
, SOCFPGA_SDR_ADDRESS
+ addr
);
1365 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr2
);
1366 writel(0x10, SOCFPGA_SDR_ADDRESS
+ addr
);
1367 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add2
);
1368 writel(RW_MGR_READ_B2B_WAIT2
, SOCFPGA_SDR_ADDRESS
+ addr
);
1370 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr0
);
1371 if (quick_read_mode
)
1372 writel(0x1, SOCFPGA_SDR_ADDRESS
+ addr
);
1373 /* need at least two (1+1) reads to capture failures */
1374 else if (all_groups
)
1375 writel(0x06, SOCFPGA_SDR_ADDRESS
+ addr
);
1377 writel(0x32, SOCFPGA_SDR_ADDRESS
+ addr
);
1379 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add0
);
1380 writel(RW_MGR_READ_B2B
, SOCFPGA_SDR_ADDRESS
+ addr
);
1381 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr3
);
1383 writel(RW_MGR_MEM_IF_READ_DQS_WIDTH
*
1384 RW_MGR_MEM_VIRTUAL_GROUPS_PER_READ_DQS
- 1,
1385 SOCFPGA_SDR_ADDRESS
+ addr
);
1387 writel(0x0, SOCFPGA_SDR_ADDRESS
+ addr
);
1389 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add3
);
1390 writel(RW_MGR_READ_B2B
, SOCFPGA_SDR_ADDRESS
+ addr
);
1393 for (vg
= RW_MGR_MEM_VIRTUAL_GROUPS_PER_READ_DQS
-1; ; vg
--) {
1394 /* reset the fifos to get pointers to known state */
1395 addr
= sdr_get_addr(&phy_mgr_cmd
->fifo_reset
);
1396 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
1397 addr
= sdr_get_addr((u32
*)RW_MGR_RESET_READ_DATAPATH
);
1398 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
1400 tmp_bit_chk
= tmp_bit_chk
<< (RW_MGR_MEM_DQ_PER_READ_DQS
1401 / RW_MGR_MEM_VIRTUAL_GROUPS_PER_READ_DQS
);
1403 addr
= sdr_get_addr((u32
*)(all_groups
? RW_MGR_RUN_ALL_GROUPS
:
1404 RW_MGR_RUN_SINGLE_GROUP
));
1405 writel(RW_MGR_READ_B2B
, SOCFPGA_SDR_ADDRESS
+ addr
+
1406 ((group
* RW_MGR_MEM_VIRTUAL_GROUPS_PER_READ_DQS
+
1409 addr
= sdr_get_addr((u32
*)BASE_RW_MGR
);
1410 base_rw_mgr
= readl(SOCFPGA_SDR_ADDRESS
+ addr
);
1411 tmp_bit_chk
= tmp_bit_chk
| (correct_mask_vg
& ~(base_rw_mgr
));
1416 *bit_chk
&= tmp_bit_chk
;
1419 addr
= sdr_get_addr((u32
*)RW_MGR_RUN_SINGLE_GROUP
);
1420 writel(RW_MGR_CLEAR_DQS_ENABLE
, SOCFPGA_SDR_ADDRESS
+ addr
+ (group
<< 2));
1423 set_rank_and_odt_mask(0, RW_MGR_ODT_MODE_OFF
);
1424 debug_cond(DLEVEL
== 2, "%s:%d read_test(%u,ALL,%u) =>\
1425 (%u == %u) => %lu", __func__
, __LINE__
, group
,
1426 all_groups
, *bit_chk
, param
->read_correct_mask
,
1427 (long unsigned int)(*bit_chk
==
1428 param
->read_correct_mask
));
1429 return *bit_chk
== param
->read_correct_mask
;
1431 set_rank_and_odt_mask(0, RW_MGR_ODT_MODE_OFF
);
1432 debug_cond(DLEVEL
== 2, "%s:%d read_test(%u,ONE,%u) =>\
1433 (%u != %lu) => %lu\n", __func__
, __LINE__
,
1434 group
, all_groups
, *bit_chk
, (long unsigned int)0,
1435 (long unsigned int)(*bit_chk
!= 0x00));
1436 return *bit_chk
!= 0x00;
1440 static uint32_t rw_mgr_mem_calibrate_read_test_all_ranks(uint32_t group
,
1441 uint32_t num_tries
, uint32_t all_correct
, uint32_t *bit_chk
,
1442 uint32_t all_groups
)
1444 return rw_mgr_mem_calibrate_read_test(0, group
, num_tries
, all_correct
,
1445 bit_chk
, all_groups
, 1);
1448 static void rw_mgr_incr_vfifo(uint32_t grp
, uint32_t *v
)
1450 uint32_t addr
= sdr_get_addr(&phy_mgr_cmd
->inc_vfifo_hard_phy
);
1452 writel(grp
, SOCFPGA_SDR_ADDRESS
+ addr
);
1456 static void rw_mgr_decr_vfifo(uint32_t grp
, uint32_t *v
)
1460 for (i
= 0; i
< VFIFO_SIZE
-1; i
++)
1461 rw_mgr_incr_vfifo(grp
, v
);
1464 static int find_vfifo_read(uint32_t grp
, uint32_t *bit_chk
)
1467 uint32_t fail_cnt
= 0;
1468 uint32_t test_status
;
1470 for (v
= 0; v
< VFIFO_SIZE
; ) {
1471 debug_cond(DLEVEL
== 2, "%s:%d find_dqs_en_phase: vfifo %u\n",
1472 __func__
, __LINE__
, v
);
1473 test_status
= rw_mgr_mem_calibrate_read_test_all_ranks
1474 (grp
, 1, PASS_ONE_BIT
, bit_chk
, 0);
1482 /* fiddle with FIFO */
1483 rw_mgr_incr_vfifo(grp
, &v
);
1486 if (v
>= VFIFO_SIZE
) {
1487 /* no failing read found!! Something must have gone wrong */
1488 debug_cond(DLEVEL
== 2, "%s:%d find_dqs_en_phase: vfifo failed\n",
1489 __func__
, __LINE__
);
1496 static int find_working_phase(uint32_t *grp
, uint32_t *bit_chk
,
1497 uint32_t dtaps_per_ptap
, uint32_t *work_bgn
,
1498 uint32_t *v
, uint32_t *d
, uint32_t *p
,
1499 uint32_t *i
, uint32_t *max_working_cnt
)
1501 uint32_t found_begin
= 0;
1502 uint32_t tmp_delay
= 0;
1503 uint32_t test_status
;
1505 for (*d
= 0; *d
<= dtaps_per_ptap
; (*d
)++, tmp_delay
+=
1506 IO_DELAY_PER_DQS_EN_DCHAIN_TAP
) {
1507 *work_bgn
= tmp_delay
;
1508 scc_mgr_set_dqs_en_delay_all_ranks(*grp
, *d
);
1510 for (*i
= 0; *i
< VFIFO_SIZE
; (*i
)++) {
1511 for (*p
= 0; *p
<= IO_DQS_EN_PHASE_MAX
; (*p
)++, *work_bgn
+=
1512 IO_DELAY_PER_OPA_TAP
) {
1513 scc_mgr_set_dqs_en_phase_all_ranks(*grp
, *p
);
1516 rw_mgr_mem_calibrate_read_test_all_ranks
1517 (*grp
, 1, PASS_ONE_BIT
, bit_chk
, 0);
1520 *max_working_cnt
= 1;
1529 if (*p
> IO_DQS_EN_PHASE_MAX
)
1530 /* fiddle with FIFO */
1531 rw_mgr_incr_vfifo(*grp
, v
);
1538 if (*i
>= VFIFO_SIZE
) {
1539 /* cannot find working solution */
1540 debug_cond(DLEVEL
== 2, "%s:%d find_dqs_en_phase: no vfifo/\
1541 ptap/dtap\n", __func__
, __LINE__
);
1548 static void sdr_backup_phase(uint32_t *grp
, uint32_t *bit_chk
,
1549 uint32_t *work_bgn
, uint32_t *v
, uint32_t *d
,
1550 uint32_t *p
, uint32_t *max_working_cnt
)
1552 uint32_t found_begin
= 0;
1555 /* Special case code for backing up a phase */
1557 *p
= IO_DQS_EN_PHASE_MAX
;
1558 rw_mgr_decr_vfifo(*grp
, v
);
1562 tmp_delay
= *work_bgn
- IO_DELAY_PER_OPA_TAP
;
1563 scc_mgr_set_dqs_en_phase_all_ranks(*grp
, *p
);
1565 for (*d
= 0; *d
<= IO_DQS_EN_DELAY_MAX
&& tmp_delay
< *work_bgn
;
1566 (*d
)++, tmp_delay
+= IO_DELAY_PER_DQS_EN_DCHAIN_TAP
) {
1567 scc_mgr_set_dqs_en_delay_all_ranks(*grp
, *d
);
1569 if (rw_mgr_mem_calibrate_read_test_all_ranks(*grp
, 1,
1573 *work_bgn
= tmp_delay
;
1578 /* We have found a working dtap before the ptap found above */
1579 if (found_begin
== 1)
1580 (*max_working_cnt
)++;
1583 * Restore VFIFO to old state before we decremented it
1587 if (*p
> IO_DQS_EN_PHASE_MAX
) {
1589 rw_mgr_incr_vfifo(*grp
, v
);
1592 scc_mgr_set_dqs_en_delay_all_ranks(*grp
, 0);
1595 static int sdr_nonworking_phase(uint32_t *grp
, uint32_t *bit_chk
,
1596 uint32_t *work_bgn
, uint32_t *v
, uint32_t *d
,
1597 uint32_t *p
, uint32_t *i
, uint32_t *max_working_cnt
,
1600 uint32_t found_end
= 0;
1603 *work_end
+= IO_DELAY_PER_OPA_TAP
;
1604 if (*p
> IO_DQS_EN_PHASE_MAX
) {
1605 /* fiddle with FIFO */
1607 rw_mgr_incr_vfifo(*grp
, v
);
1610 for (; *i
< VFIFO_SIZE
+ 1; (*i
)++) {
1611 for (; *p
<= IO_DQS_EN_PHASE_MAX
; (*p
)++, *work_end
1612 += IO_DELAY_PER_OPA_TAP
) {
1613 scc_mgr_set_dqs_en_phase_all_ranks(*grp
, *p
);
1615 if (!rw_mgr_mem_calibrate_read_test_all_ranks
1616 (*grp
, 1, PASS_ONE_BIT
, bit_chk
, 0)) {
1620 (*max_working_cnt
)++;
1627 if (*p
> IO_DQS_EN_PHASE_MAX
) {
1628 /* fiddle with FIFO */
1629 rw_mgr_incr_vfifo(*grp
, v
);
1634 if (*i
>= VFIFO_SIZE
+ 1) {
1635 /* cannot see edge of failing read */
1636 debug_cond(DLEVEL
== 2, "%s:%d sdr_nonworking_phase: end:\
1637 failed\n", __func__
, __LINE__
);
1644 static int sdr_find_window_centre(uint32_t *grp
, uint32_t *bit_chk
,
1645 uint32_t *work_bgn
, uint32_t *v
, uint32_t *d
,
1646 uint32_t *p
, uint32_t *work_mid
,
1652 *work_mid
= (*work_bgn
+ *work_end
) / 2;
1654 debug_cond(DLEVEL
== 2, "work_bgn=%d work_end=%d work_mid=%d\n",
1655 *work_bgn
, *work_end
, *work_mid
);
1656 /* Get the middle delay to be less than a VFIFO delay */
1657 for (*p
= 0; *p
<= IO_DQS_EN_PHASE_MAX
;
1658 (*p
)++, tmp_delay
+= IO_DELAY_PER_OPA_TAP
)
1660 debug_cond(DLEVEL
== 2, "vfifo ptap delay %d\n", tmp_delay
);
1661 while (*work_mid
> tmp_delay
)
1662 *work_mid
-= tmp_delay
;
1663 debug_cond(DLEVEL
== 2, "new work_mid %d\n", *work_mid
);
1666 for (*p
= 0; *p
<= IO_DQS_EN_PHASE_MAX
&& tmp_delay
< *work_mid
;
1667 (*p
)++, tmp_delay
+= IO_DELAY_PER_OPA_TAP
)
1669 tmp_delay
-= IO_DELAY_PER_OPA_TAP
;
1670 debug_cond(DLEVEL
== 2, "new p %d, tmp_delay=%d\n", (*p
) - 1, tmp_delay
);
1671 for (*d
= 0; *d
<= IO_DQS_EN_DELAY_MAX
&& tmp_delay
< *work_mid
; (*d
)++,
1672 tmp_delay
+= IO_DELAY_PER_DQS_EN_DCHAIN_TAP
)
1674 debug_cond(DLEVEL
== 2, "new d %d, tmp_delay=%d\n", *d
, tmp_delay
);
1676 scc_mgr_set_dqs_en_phase_all_ranks(*grp
, (*p
) - 1);
1677 scc_mgr_set_dqs_en_delay_all_ranks(*grp
, *d
);
1680 * push vfifo until we can successfully calibrate. We can do this
1681 * because the largest possible margin in 1 VFIFO cycle.
1683 for (i
= 0; i
< VFIFO_SIZE
; i
++) {
1684 debug_cond(DLEVEL
== 2, "find_dqs_en_phase: center: vfifo=%u\n",
1686 if (rw_mgr_mem_calibrate_read_test_all_ranks(*grp
, 1,
1692 /* fiddle with FIFO */
1693 rw_mgr_incr_vfifo(*grp
, v
);
1696 if (i
>= VFIFO_SIZE
) {
1697 debug_cond(DLEVEL
== 2, "%s:%d find_dqs_en_phase: center: \
1698 failed\n", __func__
, __LINE__
);
1705 /* find a good dqs enable to use */
1706 static uint32_t rw_mgr_mem_calibrate_vfifo_find_dqs_en_phase(uint32_t grp
)
1708 uint32_t v
, d
, p
, i
;
1709 uint32_t max_working_cnt
;
1711 uint32_t dtaps_per_ptap
;
1712 uint32_t work_bgn
, work_mid
, work_end
;
1713 uint32_t found_passing_read
, found_failing_read
, initial_failing_dtap
;
1716 debug("%s:%d %u\n", __func__
, __LINE__
, grp
);
1718 reg_file_set_sub_stage(CAL_SUBSTAGE_VFIFO_CENTER
);
1720 scc_mgr_set_dqs_en_delay_all_ranks(grp
, 0);
1721 scc_mgr_set_dqs_en_phase_all_ranks(grp
, 0);
1723 /* ************************************************************** */
1724 /* * Step 0 : Determine number of delay taps for each phase tap * */
1725 dtaps_per_ptap
= IO_DELAY_PER_OPA_TAP
/IO_DELAY_PER_DQS_EN_DCHAIN_TAP
;
1727 /* ********************************************************* */
1728 /* * Step 1 : First push vfifo until we get a failing read * */
1729 v
= find_vfifo_read(grp
, &bit_chk
);
1731 max_working_cnt
= 0;
1733 /* ******************************************************** */
1734 /* * step 2: find first working phase, increment in ptaps * */
1736 if (find_working_phase(&grp
, &bit_chk
, dtaps_per_ptap
, &work_bgn
, &v
, &d
,
1737 &p
, &i
, &max_working_cnt
) == 0)
1740 work_end
= work_bgn
;
1743 * If d is 0 then the working window covers a phase tap and
1744 * we can follow the old procedure otherwise, we've found the beginning,
1745 * and we need to increment the dtaps until we find the end.
1748 /* ********************************************************* */
1749 /* * step 3a: if we have room, back off by one and
1750 increment in dtaps * */
1752 sdr_backup_phase(&grp
, &bit_chk
, &work_bgn
, &v
, &d
, &p
,
1755 /* ********************************************************* */
1756 /* * step 4a: go forward from working phase to non working
1757 phase, increment in ptaps * */
1758 if (sdr_nonworking_phase(&grp
, &bit_chk
, &work_bgn
, &v
, &d
, &p
,
1759 &i
, &max_working_cnt
, &work_end
) == 0)
1762 /* ********************************************************* */
1763 /* * step 5a: back off one from last, increment in dtaps * */
1765 /* Special case code for backing up a phase */
1767 p
= IO_DQS_EN_PHASE_MAX
;
1768 rw_mgr_decr_vfifo(grp
, &v
);
1773 work_end
-= IO_DELAY_PER_OPA_TAP
;
1774 scc_mgr_set_dqs_en_phase_all_ranks(grp
, p
);
1776 /* * The actual increment of dtaps is done outside of
1777 the if/else loop to share code */
1780 debug_cond(DLEVEL
== 2, "%s:%d find_dqs_en_phase: v/p: \
1781 vfifo=%u ptap=%u\n", __func__
, __LINE__
,
1784 /* ******************************************************* */
1785 /* * step 3-5b: Find the right edge of the window using
1787 debug_cond(DLEVEL
== 2, "%s:%d find_dqs_en_phase:vfifo=%u \
1788 ptap=%u dtap=%u bgn=%u\n", __func__
, __LINE__
,
1791 work_end
= work_bgn
;
1793 /* * The actual increment of dtaps is done outside of the
1794 if/else loop to share code */
1796 /* Only here to counterbalance a subtract later on which is
1797 not needed if this branch of the algorithm is taken */
1801 /* The dtap increment to find the failing edge is done here */
1802 for (; d
<= IO_DQS_EN_DELAY_MAX
; d
++, work_end
+=
1803 IO_DELAY_PER_DQS_EN_DCHAIN_TAP
) {
1804 debug_cond(DLEVEL
== 2, "%s:%d find_dqs_en_phase: \
1805 end-2: dtap=%u\n", __func__
, __LINE__
, d
);
1806 scc_mgr_set_dqs_en_delay_all_ranks(grp
, d
);
1808 if (!rw_mgr_mem_calibrate_read_test_all_ranks(grp
, 1,
1815 /* Go back to working dtap */
1817 work_end
-= IO_DELAY_PER_DQS_EN_DCHAIN_TAP
;
1819 debug_cond(DLEVEL
== 2, "%s:%d find_dqs_en_phase: v/p/d: vfifo=%u \
1820 ptap=%u dtap=%u end=%u\n", __func__
, __LINE__
,
1821 v
, p
, d
-1, work_end
);
1823 if (work_end
< work_bgn
) {
1825 debug_cond(DLEVEL
== 2, "%s:%d find_dqs_en_phase: end-2: \
1826 failed\n", __func__
, __LINE__
);
1830 debug_cond(DLEVEL
== 2, "%s:%d find_dqs_en_phase: found range [%u,%u]\n",
1831 __func__
, __LINE__
, work_bgn
, work_end
);
1833 /* *************************************************************** */
1835 * * We need to calculate the number of dtaps that equal a ptap
1836 * * To do that we'll back up a ptap and re-find the edge of the
1837 * * window using dtaps
1840 debug_cond(DLEVEL
== 2, "%s:%d find_dqs_en_phase: calculate dtaps_per_ptap \
1841 for tracking\n", __func__
, __LINE__
);
1843 /* Special case code for backing up a phase */
1845 p
= IO_DQS_EN_PHASE_MAX
;
1846 rw_mgr_decr_vfifo(grp
, &v
);
1847 debug_cond(DLEVEL
== 2, "%s:%d find_dqs_en_phase: backedup \
1848 cycle/phase: v=%u p=%u\n", __func__
, __LINE__
,
1852 debug_cond(DLEVEL
== 2, "%s:%d find_dqs_en_phase: backedup \
1853 phase only: v=%u p=%u", __func__
, __LINE__
,
1857 scc_mgr_set_dqs_en_phase_all_ranks(grp
, p
);
1860 * Increase dtap until we first see a passing read (in case the
1861 * window is smaller than a ptap),
1862 * and then a failing read to mark the edge of the window again
1865 /* Find a passing read */
1866 debug_cond(DLEVEL
== 2, "%s:%d find_dqs_en_phase: find passing read\n",
1867 __func__
, __LINE__
);
1868 found_passing_read
= 0;
1869 found_failing_read
= 0;
1870 initial_failing_dtap
= d
;
1871 for (; d
<= IO_DQS_EN_DELAY_MAX
; d
++) {
1872 debug_cond(DLEVEL
== 2, "%s:%d find_dqs_en_phase: testing \
1873 read d=%u\n", __func__
, __LINE__
, d
);
1874 scc_mgr_set_dqs_en_delay_all_ranks(grp
, d
);
1876 if (rw_mgr_mem_calibrate_read_test_all_ranks(grp
, 1,
1879 found_passing_read
= 1;
1884 if (found_passing_read
) {
1885 /* Find a failing read */
1886 debug_cond(DLEVEL
== 2, "%s:%d find_dqs_en_phase: find failing \
1887 read\n", __func__
, __LINE__
);
1888 for (d
= d
+ 1; d
<= IO_DQS_EN_DELAY_MAX
; d
++) {
1889 debug_cond(DLEVEL
== 2, "%s:%d find_dqs_en_phase: \
1890 testing read d=%u\n", __func__
, __LINE__
, d
);
1891 scc_mgr_set_dqs_en_delay_all_ranks(grp
, d
);
1893 if (!rw_mgr_mem_calibrate_read_test_all_ranks
1894 (grp
, 1, PASS_ONE_BIT
, &bit_chk
, 0)) {
1895 found_failing_read
= 1;
1900 debug_cond(DLEVEL
== 1, "%s:%d find_dqs_en_phase: failed to \
1901 calculate dtaps", __func__
, __LINE__
);
1902 debug_cond(DLEVEL
== 1, "per ptap. Fall back on static value\n");
1906 * The dynamically calculated dtaps_per_ptap is only valid if we
1907 * found a passing/failing read. If we didn't, it means d hit the max
1908 * (IO_DQS_EN_DELAY_MAX). Otherwise, dtaps_per_ptap retains its
1909 * statically calculated value.
1911 if (found_passing_read
&& found_failing_read
)
1912 dtaps_per_ptap
= d
- initial_failing_dtap
;
1914 addr
= sdr_get_addr(&sdr_reg_file
->dtaps_per_ptap
);
1915 writel(dtaps_per_ptap
, SOCFPGA_SDR_ADDRESS
+ addr
);
1916 debug_cond(DLEVEL
== 2, "%s:%d find_dqs_en_phase: dtaps_per_ptap=%u \
1917 - %u = %u", __func__
, __LINE__
, d
,
1918 initial_failing_dtap
, dtaps_per_ptap
);
1920 /* ******************************************** */
1921 /* * step 6: Find the centre of the window * */
1922 if (sdr_find_window_centre(&grp
, &bit_chk
, &work_bgn
, &v
, &d
, &p
,
1923 &work_mid
, &work_end
) == 0)
1926 debug_cond(DLEVEL
== 2, "%s:%d find_dqs_en_phase: center found: \
1927 vfifo=%u ptap=%u dtap=%u\n", __func__
, __LINE__
,
1933 * Try rw_mgr_mem_calibrate_vfifo_find_dqs_en_phase across different
1934 * dq_in_delay values
1937 rw_mgr_mem_calibrate_vfifo_find_dqs_en_phase_sweep_dq_in_delay
1938 (uint32_t write_group
, uint32_t read_group
, uint32_t test_bgn
)
1947 const uint32_t delay_step
= IO_IO_IN_DELAY_MAX
/
1948 (RW_MGR_MEM_DQ_PER_READ_DQS
-1);
1949 /* we start at zero, so have one less dq to devide among */
1951 debug("%s:%d (%u,%u,%u)", __func__
, __LINE__
, write_group
, read_group
,
1954 /* try different dq_in_delays since the dq path is shorter than dqs */
1956 for (r
= 0; r
< RW_MGR_MEM_NUMBER_OF_RANKS
;
1957 r
+= NUM_RANKS_PER_SHADOW_REG
) {
1958 for (i
= 0, p
= test_bgn
, d
= 0; i
< RW_MGR_MEM_DQ_PER_READ_DQS
;
1959 i
++, p
++, d
+= delay_step
) {
1960 debug_cond(DLEVEL
== 1, "%s:%d rw_mgr_mem_calibrate_\
1961 vfifo_find_dqs_", __func__
, __LINE__
);
1962 debug_cond(DLEVEL
== 1, "en_phase_sweep_dq_in_delay: g=%u/%u ",
1963 write_group
, read_group
);
1964 debug_cond(DLEVEL
== 1, "r=%u, i=%u p=%u d=%u\n", r
, i
, p
, d
);
1965 scc_mgr_set_dq_in_delay(write_group
, p
, d
);
1968 addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
1969 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
1972 found
= rw_mgr_mem_calibrate_vfifo_find_dqs_en_phase(read_group
);
1974 debug_cond(DLEVEL
== 1, "%s:%d rw_mgr_mem_calibrate_vfifo_find_dqs_\
1975 en_phase_sweep_dq", __func__
, __LINE__
);
1976 debug_cond(DLEVEL
== 1, "_in_delay: g=%u/%u found=%u; Reseting delay \
1977 chain to zero\n", write_group
, read_group
, found
);
1979 for (r
= 0; r
< RW_MGR_MEM_NUMBER_OF_RANKS
;
1980 r
+= NUM_RANKS_PER_SHADOW_REG
) {
1981 for (i
= 0, p
= test_bgn
; i
< RW_MGR_MEM_DQ_PER_READ_DQS
;
1983 scc_mgr_set_dq_in_delay(write_group
, p
, 0);
1986 addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
1987 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
1993 /* per-bit deskew DQ and center */
1994 static uint32_t rw_mgr_mem_calibrate_vfifo_center(uint32_t rank_bgn
,
1995 uint32_t write_group
, uint32_t read_group
, uint32_t test_bgn
,
1996 uint32_t use_read_test
, uint32_t update_fom
)
1998 uint32_t i
, p
, d
, min_index
;
2000 * Store these as signed since there are comparisons with
2004 uint32_t sticky_bit_chk
;
2005 int32_t left_edge
[RW_MGR_MEM_DQ_PER_READ_DQS
];
2006 int32_t right_edge
[RW_MGR_MEM_DQ_PER_READ_DQS
];
2007 int32_t final_dq
[RW_MGR_MEM_DQ_PER_READ_DQS
];
2009 int32_t orig_mid_min
, mid_min
;
2010 int32_t new_dqs
, start_dqs
, start_dqs_en
, shift_dq
, final_dqs
,
2012 int32_t dq_margin
, dqs_margin
;
2014 uint32_t temp_dq_in_delay1
, temp_dq_in_delay2
;
2017 debug("%s:%d: %u %u", __func__
, __LINE__
, read_group
, test_bgn
);
2019 addr
= sdr_get_addr((u32
*)SCC_MGR_DQS_IN_DELAY
);
2020 start_dqs
= readl(SOCFPGA_SDR_ADDRESS
+ addr
+ (read_group
<< 2));
2021 if (IO_SHIFT_DQS_EN_WHEN_SHIFT_DQS
)
2022 start_dqs_en
= readl(SOCFPGA_SDR_ADDRESS
+ addr
+ ((read_group
<< 2)
2023 - IO_DQS_EN_DELAY_OFFSET
));
2025 /* set the left and right edge of each bit to an illegal value */
2026 /* use (IO_IO_IN_DELAY_MAX + 1) as an illegal value */
2028 for (i
= 0; i
< RW_MGR_MEM_DQ_PER_READ_DQS
; i
++) {
2029 left_edge
[i
] = IO_IO_IN_DELAY_MAX
+ 1;
2030 right_edge
[i
] = IO_IO_IN_DELAY_MAX
+ 1;
2033 addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
2034 /* Search for the left edge of the window for each bit */
2035 for (d
= 0; d
<= IO_IO_IN_DELAY_MAX
; d
++) {
2036 scc_mgr_apply_group_dq_in_delay(write_group
, test_bgn
, d
);
2038 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
2041 * Stop searching when the read test doesn't pass AND when
2042 * we've seen a passing read on every bit.
2044 if (use_read_test
) {
2045 stop
= !rw_mgr_mem_calibrate_read_test(rank_bgn
,
2046 read_group
, NUM_READ_PB_TESTS
, PASS_ONE_BIT
,
2049 rw_mgr_mem_calibrate_write_test(rank_bgn
, write_group
,
2052 bit_chk
= bit_chk
>> (RW_MGR_MEM_DQ_PER_READ_DQS
*
2053 (read_group
- (write_group
*
2054 RW_MGR_MEM_IF_READ_DQS_WIDTH
/
2055 RW_MGR_MEM_IF_WRITE_DQS_WIDTH
)));
2056 stop
= (bit_chk
== 0);
2058 sticky_bit_chk
= sticky_bit_chk
| bit_chk
;
2059 stop
= stop
&& (sticky_bit_chk
== param
->read_correct_mask
);
2060 debug_cond(DLEVEL
== 2, "%s:%d vfifo_center(left): dtap=%u => %u == %u \
2061 && %u", __func__
, __LINE__
, d
,
2063 param
->read_correct_mask
, stop
);
2068 for (i
= 0; i
< RW_MGR_MEM_DQ_PER_READ_DQS
; i
++) {
2070 /* Remember a passing test as the
2074 /* If a left edge has not been seen yet,
2075 then a future passing test will mark
2076 this edge as the right edge */
2078 IO_IO_IN_DELAY_MAX
+ 1) {
2079 right_edge
[i
] = -(d
+ 1);
2082 bit_chk
= bit_chk
>> 1;
2087 /* Reset DQ delay chains to 0 */
2088 scc_mgr_apply_group_dq_in_delay(write_group
, test_bgn
, 0);
2090 for (i
= RW_MGR_MEM_DQ_PER_READ_DQS
- 1;; i
--) {
2091 debug_cond(DLEVEL
== 2, "%s:%d vfifo_center: left_edge[%u]: \
2092 %d right_edge[%u]: %d\n", __func__
, __LINE__
,
2093 i
, left_edge
[i
], i
, right_edge
[i
]);
2096 * Check for cases where we haven't found the left edge,
2097 * which makes our assignment of the the right edge invalid.
2098 * Reset it to the illegal value.
2100 if ((left_edge
[i
] == IO_IO_IN_DELAY_MAX
+ 1) && (
2101 right_edge
[i
] != IO_IO_IN_DELAY_MAX
+ 1)) {
2102 right_edge
[i
] = IO_IO_IN_DELAY_MAX
+ 1;
2103 debug_cond(DLEVEL
== 2, "%s:%d vfifo_center: reset \
2104 right_edge[%u]: %d\n", __func__
, __LINE__
,
2109 * Reset sticky bit (except for bits where we have seen
2110 * both the left and right edge).
2112 sticky_bit_chk
= sticky_bit_chk
<< 1;
2113 if ((left_edge
[i
] != IO_IO_IN_DELAY_MAX
+ 1) &&
2114 (right_edge
[i
] != IO_IO_IN_DELAY_MAX
+ 1)) {
2115 sticky_bit_chk
= sticky_bit_chk
| 1;
2122 addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
2123 /* Search for the right edge of the window for each bit */
2124 for (d
= 0; d
<= IO_DQS_IN_DELAY_MAX
- start_dqs
; d
++) {
2125 scc_mgr_set_dqs_bus_in_delay(read_group
, d
+ start_dqs
);
2126 if (IO_SHIFT_DQS_EN_WHEN_SHIFT_DQS
) {
2127 uint32_t delay
= d
+ start_dqs_en
;
2128 if (delay
> IO_DQS_EN_DELAY_MAX
)
2129 delay
= IO_DQS_EN_DELAY_MAX
;
2130 scc_mgr_set_dqs_en_delay(read_group
, delay
);
2132 scc_mgr_load_dqs(read_group
);
2134 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
2137 * Stop searching when the read test doesn't pass AND when
2138 * we've seen a passing read on every bit.
2140 if (use_read_test
) {
2141 stop
= !rw_mgr_mem_calibrate_read_test(rank_bgn
,
2142 read_group
, NUM_READ_PB_TESTS
, PASS_ONE_BIT
,
2145 rw_mgr_mem_calibrate_write_test(rank_bgn
, write_group
,
2148 bit_chk
= bit_chk
>> (RW_MGR_MEM_DQ_PER_READ_DQS
*
2149 (read_group
- (write_group
*
2150 RW_MGR_MEM_IF_READ_DQS_WIDTH
/
2151 RW_MGR_MEM_IF_WRITE_DQS_WIDTH
)));
2152 stop
= (bit_chk
== 0);
2154 sticky_bit_chk
= sticky_bit_chk
| bit_chk
;
2155 stop
= stop
&& (sticky_bit_chk
== param
->read_correct_mask
);
2157 debug_cond(DLEVEL
== 2, "%s:%d vfifo_center(right): dtap=%u => %u == \
2158 %u && %u", __func__
, __LINE__
, d
,
2159 sticky_bit_chk
, param
->read_correct_mask
, stop
);
2164 for (i
= 0; i
< RW_MGR_MEM_DQ_PER_READ_DQS
; i
++) {
2166 /* Remember a passing test as
2171 /* If a right edge has not been
2172 seen yet, then a future passing
2173 test will mark this edge as the
2175 if (right_edge
[i
] ==
2176 IO_IO_IN_DELAY_MAX
+ 1) {
2177 left_edge
[i
] = -(d
+ 1);
2180 /* d = 0 failed, but it passed
2181 when testing the left edge,
2182 so it must be marginal,
2184 if (right_edge
[i
] ==
2185 IO_IO_IN_DELAY_MAX
+ 1 &&
2191 /* If a right edge has not been
2192 seen yet, then a future passing
2193 test will mark this edge as the
2195 else if (right_edge
[i
] ==
2196 IO_IO_IN_DELAY_MAX
+
2198 left_edge
[i
] = -(d
+ 1);
2203 debug_cond(DLEVEL
== 2, "%s:%d vfifo_center[r,\
2204 d=%u]: ", __func__
, __LINE__
, d
);
2205 debug_cond(DLEVEL
== 2, "bit_chk_test=%d left_edge[%u]: %d ",
2206 (int)(bit_chk
& 1), i
, left_edge
[i
]);
2207 debug_cond(DLEVEL
== 2, "right_edge[%u]: %d\n", i
,
2209 bit_chk
= bit_chk
>> 1;
2214 /* Check that all bits have a window */
2215 addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
2216 for (i
= 0; i
< RW_MGR_MEM_DQ_PER_READ_DQS
; i
++) {
2217 debug_cond(DLEVEL
== 2, "%s:%d vfifo_center: left_edge[%u]: \
2218 %d right_edge[%u]: %d", __func__
, __LINE__
,
2219 i
, left_edge
[i
], i
, right_edge
[i
]);
2220 if ((left_edge
[i
] == IO_IO_IN_DELAY_MAX
+ 1) || (right_edge
[i
]
2221 == IO_IO_IN_DELAY_MAX
+ 1)) {
2223 * Restore delay chain settings before letting the loop
2224 * in rw_mgr_mem_calibrate_vfifo to retry different
2225 * dqs/ck relationships.
2227 scc_mgr_set_dqs_bus_in_delay(read_group
, start_dqs
);
2228 if (IO_SHIFT_DQS_EN_WHEN_SHIFT_DQS
) {
2229 scc_mgr_set_dqs_en_delay(read_group
,
2232 scc_mgr_load_dqs(read_group
);
2233 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
2235 debug_cond(DLEVEL
== 1, "%s:%d vfifo_center: failed to \
2236 find edge [%u]: %d %d", __func__
, __LINE__
,
2237 i
, left_edge
[i
], right_edge
[i
]);
2238 if (use_read_test
) {
2239 set_failing_group_stage(read_group
*
2240 RW_MGR_MEM_DQ_PER_READ_DQS
+ i
,
2242 CAL_SUBSTAGE_VFIFO_CENTER
);
2244 set_failing_group_stage(read_group
*
2245 RW_MGR_MEM_DQ_PER_READ_DQS
+ i
,
2246 CAL_STAGE_VFIFO_AFTER_WRITES
,
2247 CAL_SUBSTAGE_VFIFO_CENTER
);
2253 /* Find middle of window for each DQ bit */
2254 mid_min
= left_edge
[0] - right_edge
[0];
2256 for (i
= 1; i
< RW_MGR_MEM_DQ_PER_READ_DQS
; i
++) {
2257 mid
= left_edge
[i
] - right_edge
[i
];
2258 if (mid
< mid_min
) {
2265 * -mid_min/2 represents the amount that we need to move DQS.
2266 * If mid_min is odd and positive we'll need to add one to
2267 * make sure the rounding in further calculations is correct
2268 * (always bias to the right), so just add 1 for all positive values.
2273 mid_min
= mid_min
/ 2;
2275 debug_cond(DLEVEL
== 1, "%s:%d vfifo_center: mid_min=%d (index=%u)\n",
2276 __func__
, __LINE__
, mid_min
, min_index
);
2278 /* Determine the amount we can change DQS (which is -mid_min) */
2279 orig_mid_min
= mid_min
;
2280 new_dqs
= start_dqs
- mid_min
;
2281 if (new_dqs
> IO_DQS_IN_DELAY_MAX
)
2282 new_dqs
= IO_DQS_IN_DELAY_MAX
;
2283 else if (new_dqs
< 0)
2286 mid_min
= start_dqs
- new_dqs
;
2287 debug_cond(DLEVEL
== 1, "vfifo_center: new mid_min=%d new_dqs=%d\n",
2290 if (IO_SHIFT_DQS_EN_WHEN_SHIFT_DQS
) {
2291 if (start_dqs_en
- mid_min
> IO_DQS_EN_DELAY_MAX
)
2292 mid_min
+= start_dqs_en
- mid_min
- IO_DQS_EN_DELAY_MAX
;
2293 else if (start_dqs_en
- mid_min
< 0)
2294 mid_min
+= start_dqs_en
- mid_min
;
2296 new_dqs
= start_dqs
- mid_min
;
2298 debug_cond(DLEVEL
== 1, "vfifo_center: start_dqs=%d start_dqs_en=%d \
2299 new_dqs=%d mid_min=%d\n", start_dqs
,
2300 IO_SHIFT_DQS_EN_WHEN_SHIFT_DQS
? start_dqs_en
: -1,
2303 /* Initialize data for export structures */
2304 dqs_margin
= IO_IO_IN_DELAY_MAX
+ 1;
2305 dq_margin
= IO_IO_IN_DELAY_MAX
+ 1;
2307 addr
= sdr_get_addr((u32
*)SCC_MGR_IO_IN_DELAY
);
2308 /* add delay to bring centre of all DQ windows to the same "level" */
2309 for (i
= 0, p
= test_bgn
; i
< RW_MGR_MEM_DQ_PER_READ_DQS
; i
++, p
++) {
2310 /* Use values before divide by 2 to reduce round off error */
2311 shift_dq
= (left_edge
[i
] - right_edge
[i
] -
2312 (left_edge
[min_index
] - right_edge
[min_index
]))/2 +
2313 (orig_mid_min
- mid_min
);
2315 debug_cond(DLEVEL
== 2, "vfifo_center: before: \
2316 shift_dq[%u]=%d\n", i
, shift_dq
);
2318 temp_dq_in_delay1
= readl(SOCFPGA_SDR_ADDRESS
+ addr
+ (p
<< 2));
2319 temp_dq_in_delay2
= readl(SOCFPGA_SDR_ADDRESS
+ addr
+ (i
<< 2));
2321 if (shift_dq
+ (int32_t)temp_dq_in_delay1
>
2322 (int32_t)IO_IO_IN_DELAY_MAX
) {
2323 shift_dq
= (int32_t)IO_IO_IN_DELAY_MAX
- temp_dq_in_delay2
;
2324 } else if (shift_dq
+ (int32_t)temp_dq_in_delay1
< 0) {
2325 shift_dq
= -(int32_t)temp_dq_in_delay1
;
2327 debug_cond(DLEVEL
== 2, "vfifo_center: after: \
2328 shift_dq[%u]=%d\n", i
, shift_dq
);
2329 final_dq
[i
] = temp_dq_in_delay1
+ shift_dq
;
2330 scc_mgr_set_dq_in_delay(write_group
, p
, final_dq
[i
]);
2333 debug_cond(DLEVEL
== 2, "vfifo_center: margin[%u]=[%d,%d]\n", i
,
2334 left_edge
[i
] - shift_dq
+ (-mid_min
),
2335 right_edge
[i
] + shift_dq
- (-mid_min
));
2336 /* To determine values for export structures */
2337 if (left_edge
[i
] - shift_dq
+ (-mid_min
) < dq_margin
)
2338 dq_margin
= left_edge
[i
] - shift_dq
+ (-mid_min
);
2340 if (right_edge
[i
] + shift_dq
- (-mid_min
) < dqs_margin
)
2341 dqs_margin
= right_edge
[i
] + shift_dq
- (-mid_min
);
2344 final_dqs
= new_dqs
;
2345 if (IO_SHIFT_DQS_EN_WHEN_SHIFT_DQS
)
2346 final_dqs_en
= start_dqs_en
- mid_min
;
2349 if (IO_SHIFT_DQS_EN_WHEN_SHIFT_DQS
) {
2350 scc_mgr_set_dqs_en_delay(read_group
, final_dqs_en
);
2351 scc_mgr_load_dqs(read_group
);
2355 scc_mgr_set_dqs_bus_in_delay(read_group
, final_dqs
);
2356 scc_mgr_load_dqs(read_group
);
2357 debug_cond(DLEVEL
== 2, "%s:%d vfifo_center: dq_margin=%d \
2358 dqs_margin=%d", __func__
, __LINE__
,
2359 dq_margin
, dqs_margin
);
2362 * Do not remove this line as it makes sure all of our decisions
2363 * have been applied. Apply the update bit.
2365 addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
2366 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
2368 return (dq_margin
>= 0) && (dqs_margin
>= 0);
2372 * calibrate the read valid prediction FIFO.
2374 * - read valid prediction will consist of finding a good DQS enable phase,
2375 * DQS enable delay, DQS input phase, and DQS input delay.
2376 * - we also do a per-bit deskew on the DQ lines.
2378 static uint32_t rw_mgr_mem_calibrate_vfifo(uint32_t read_group
,
2381 uint32_t p
, d
, rank_bgn
, sr
;
2382 uint32_t dtaps_per_ptap
;
2385 uint32_t grp_calibrated
;
2386 uint32_t write_group
, write_test_bgn
;
2387 uint32_t failed_substage
;
2389 debug("%s:%d: %u %u\n", __func__
, __LINE__
, read_group
, test_bgn
);
2391 /* update info for sims */
2392 reg_file_set_stage(CAL_STAGE_VFIFO
);
2394 write_group
= read_group
;
2395 write_test_bgn
= test_bgn
;
2397 /* USER Determine number of delay taps for each phase tap */
2400 while (tmp_delay
< IO_DELAY_PER_OPA_TAP
) {
2402 tmp_delay
+= IO_DELAY_PER_DQS_EN_DCHAIN_TAP
;
2407 /* update info for sims */
2408 reg_file_set_group(read_group
);
2412 reg_file_set_sub_stage(CAL_SUBSTAGE_GUARANTEED_READ
);
2413 failed_substage
= CAL_SUBSTAGE_GUARANTEED_READ
;
2415 for (d
= 0; d
<= dtaps_per_ptap
&& grp_calibrated
== 0; d
+= 2) {
2417 * In RLDRAMX we may be messing the delay of pins in
2418 * the same write group but outside of the current read
2419 * the group, but that's ok because we haven't
2420 * calibrated output side yet.
2423 scc_mgr_apply_group_all_out_delay_add_all_ranks
2424 (write_group
, write_test_bgn
, d
);
2427 for (p
= 0; p
<= IO_DQDQS_OUT_PHASE_MAX
&& grp_calibrated
== 0;
2429 /* set a particular dqdqs phase */
2430 scc_mgr_set_dqdqs_output_phase_all_ranks(read_group
, p
);
2432 debug_cond(DLEVEL
== 1, "%s:%d calibrate_vfifo: g=%u \
2433 p=%u d=%u\n", __func__
, __LINE__
,
2437 * Load up the patterns used by read calibration
2438 * using current DQDQS phase.
2440 rw_mgr_mem_calibrate_read_load_patterns(0, 1);
2441 if (!(gbl
->phy_debug_mode_flags
&
2442 PHY_DEBUG_DISABLE_GUARANTEED_READ
)) {
2443 if (!rw_mgr_mem_calibrate_read_test_patterns_all_ranks
2444 (read_group
, 1, &bit_chk
)) {
2445 debug_cond(DLEVEL
== 1, "%s:%d Guaranteed read test failed:",
2446 __func__
, __LINE__
);
2447 debug_cond(DLEVEL
== 1, " g=%u p=%u d=%u\n",
2455 if (rw_mgr_mem_calibrate_vfifo_find_dqs_en_phase_sweep_dq_in_delay
2456 (write_group
, read_group
, test_bgn
)) {
2458 * USER Read per-bit deskew can be done on a
2459 * per shadow register basis.
2461 for (rank_bgn
= 0, sr
= 0;
2462 rank_bgn
< RW_MGR_MEM_NUMBER_OF_RANKS
;
2463 rank_bgn
+= NUM_RANKS_PER_SHADOW_REG
,
2466 * Determine if this set of ranks
2467 * should be skipped entirely.
2469 if (!param
->skip_shadow_regs
[sr
]) {
2471 * If doing read after write
2472 * calibration, do not update
2473 * FOM, now - do it then.
2475 if (!rw_mgr_mem_calibrate_vfifo_center
2476 (rank_bgn
, write_group
,
2477 read_group
, test_bgn
, 1, 0)) {
2480 CAL_SUBSTAGE_VFIFO_CENTER
;
2486 failed_substage
= CAL_SUBSTAGE_DQS_EN_PHASE
;
2491 if (grp_calibrated
== 0) {
2492 set_failing_group_stage(write_group
, CAL_STAGE_VFIFO
,
2498 * Reset the delay chains back to zero if they have moved > 1
2499 * (check for > 1 because loop will increase d even when pass in
2503 scc_mgr_zero_group(write_group
, write_test_bgn
, 1);
2508 /* VFIFO Calibration -- Read Deskew Calibration after write deskew */
2509 static uint32_t rw_mgr_mem_calibrate_vfifo_end(uint32_t read_group
,
2512 uint32_t rank_bgn
, sr
;
2513 uint32_t grp_calibrated
;
2514 uint32_t write_group
;
2516 debug("%s:%d %u %u", __func__
, __LINE__
, read_group
, test_bgn
);
2518 /* update info for sims */
2520 reg_file_set_stage(CAL_STAGE_VFIFO_AFTER_WRITES
);
2521 reg_file_set_sub_stage(CAL_SUBSTAGE_VFIFO_CENTER
);
2523 write_group
= read_group
;
2525 /* update info for sims */
2526 reg_file_set_group(read_group
);
2529 /* Read per-bit deskew can be done on a per shadow register basis */
2530 for (rank_bgn
= 0, sr
= 0; rank_bgn
< RW_MGR_MEM_NUMBER_OF_RANKS
;
2531 rank_bgn
+= NUM_RANKS_PER_SHADOW_REG
, ++sr
) {
2532 /* Determine if this set of ranks should be skipped entirely */
2533 if (!param
->skip_shadow_regs
[sr
]) {
2534 /* This is the last calibration round, update FOM here */
2535 if (!rw_mgr_mem_calibrate_vfifo_center(rank_bgn
,
2546 if (grp_calibrated
== 0) {
2547 set_failing_group_stage(write_group
,
2548 CAL_STAGE_VFIFO_AFTER_WRITES
,
2549 CAL_SUBSTAGE_VFIFO_CENTER
);
2556 /* Calibrate LFIFO to find smallest read latency */
2557 static uint32_t rw_mgr_mem_calibrate_lfifo(void)
2563 debug("%s:%d\n", __func__
, __LINE__
);
2565 /* update info for sims */
2566 reg_file_set_stage(CAL_STAGE_LFIFO
);
2567 reg_file_set_sub_stage(CAL_SUBSTAGE_READ_LATENCY
);
2569 /* Load up the patterns used by read calibration for all ranks */
2570 rw_mgr_mem_calibrate_read_load_patterns(0, 1);
2573 addr
= sdr_get_addr(&phy_mgr_cfg
->phy_rlat
);
2575 writel(gbl
->curr_read_lat
, SOCFPGA_SDR_ADDRESS
+ addr
);
2576 debug_cond(DLEVEL
== 2, "%s:%d lfifo: read_lat=%u",
2577 __func__
, __LINE__
, gbl
->curr_read_lat
);
2579 if (!rw_mgr_mem_calibrate_read_test_all_ranks(0,
2587 /* reduce read latency and see if things are working */
2589 gbl
->curr_read_lat
--;
2590 } while (gbl
->curr_read_lat
> 0);
2592 /* reset the fifos to get pointers to known state */
2594 addr
= sdr_get_addr(&phy_mgr_cmd
->fifo_reset
);
2595 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
2598 /* add a fudge factor to the read latency that was determined */
2599 gbl
->curr_read_lat
+= 2;
2600 addr
= sdr_get_addr(&phy_mgr_cfg
->phy_rlat
);
2601 writel(gbl
->curr_read_lat
, SOCFPGA_SDR_ADDRESS
+ addr
);
2602 debug_cond(DLEVEL
== 2, "%s:%d lfifo: success: using \
2603 read_lat=%u\n", __func__
, __LINE__
,
2604 gbl
->curr_read_lat
);
2607 set_failing_group_stage(0xff, CAL_STAGE_LFIFO
,
2608 CAL_SUBSTAGE_READ_LATENCY
);
2610 debug_cond(DLEVEL
== 2, "%s:%d lfifo: failed at initial \
2611 read_lat=%u\n", __func__
, __LINE__
,
2612 gbl
->curr_read_lat
);
2618 * issue write test command.
2619 * two variants are provided. one that just tests a write pattern and
2620 * another that tests datamask functionality.
2622 static void rw_mgr_mem_calibrate_write_test_issue(uint32_t group
,
2625 uint32_t mcc_instruction
;
2626 uint32_t quick_write_mode
= (((STATIC_CALIB_STEPS
) & CALIB_SKIP_WRITES
) &&
2627 ENABLE_SUPER_QUICK_CALIBRATION
);
2628 uint32_t rw_wl_nop_cycles
;
2632 * Set counter and jump addresses for the right
2633 * number of NOP cycles.
2634 * The number of supported NOP cycles can range from -1 to infinity
2635 * Three different cases are handled:
2637 * 1. For a number of NOP cycles greater than 0, the RW Mgr looping
2638 * mechanism will be used to insert the right number of NOPs
2640 * 2. For a number of NOP cycles equals to 0, the micro-instruction
2641 * issuing the write command will jump straight to the
2642 * micro-instruction that turns on DQS (for DDRx), or outputs write
2643 * data (for RLD), skipping
2644 * the NOP micro-instruction all together
2646 * 3. A number of NOP cycles equal to -1 indicates that DQS must be
2647 * turned on in the same micro-instruction that issues the write
2648 * command. Then we need
2649 * to directly jump to the micro-instruction that sends out the data
2651 * NOTE: Implementing this mechanism uses 2 RW Mgr jump-counters
2652 * (2 and 3). One jump-counter (0) is used to perform multiple
2653 * write-read operations.
2654 * one counter left to issue this command in "multiple-group" mode
2657 rw_wl_nop_cycles
= gbl
->rw_wl_nop_cycles
;
2659 if (rw_wl_nop_cycles
== -1) {
2661 * CNTR 2 - We want to execute the special write operation that
2662 * turns on DQS right away and then skip directly to the
2663 * instruction that sends out the data. We set the counter to a
2664 * large number so that the jump is always taken.
2666 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr2
);
2667 writel(0xFF, SOCFPGA_SDR_ADDRESS
+ addr
);
2669 /* CNTR 3 - Not used */
2671 mcc_instruction
= RW_MGR_LFSR_WR_RD_DM_BANK_0_WL_1
;
2672 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add2
);
2673 writel(RW_MGR_LFSR_WR_RD_DM_BANK_0_DATA
,
2674 SOCFPGA_SDR_ADDRESS
+ addr
);
2675 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add3
);
2676 writel(RW_MGR_LFSR_WR_RD_DM_BANK_0_NOP
,
2677 SOCFPGA_SDR_ADDRESS
+ addr
);
2679 mcc_instruction
= RW_MGR_LFSR_WR_RD_BANK_0_WL_1
;
2680 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add2
);
2681 writel(RW_MGR_LFSR_WR_RD_BANK_0_DATA
, SOCFPGA_SDR_ADDRESS
+ addr
);
2682 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add3
);
2683 writel(RW_MGR_LFSR_WR_RD_BANK_0_NOP
, SOCFPGA_SDR_ADDRESS
+ addr
);
2685 } else if (rw_wl_nop_cycles
== 0) {
2687 * CNTR 2 - We want to skip the NOP operation and go straight
2688 * to the DQS enable instruction. We set the counter to a large
2689 * number so that the jump is always taken.
2691 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr2
);
2692 writel(0xFF, SOCFPGA_SDR_ADDRESS
+ addr
);
2694 /* CNTR 3 - Not used */
2696 mcc_instruction
= RW_MGR_LFSR_WR_RD_DM_BANK_0
;
2697 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add2
);
2698 writel(RW_MGR_LFSR_WR_RD_DM_BANK_0_DQS
,
2699 SOCFPGA_SDR_ADDRESS
+ addr
);
2701 mcc_instruction
= RW_MGR_LFSR_WR_RD_BANK_0
;
2702 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add2
);
2703 writel(RW_MGR_LFSR_WR_RD_BANK_0_DQS
, SOCFPGA_SDR_ADDRESS
+ addr
);
2707 * CNTR 2 - In this case we want to execute the next instruction
2708 * and NOT take the jump. So we set the counter to 0. The jump
2709 * address doesn't count.
2711 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr2
);
2712 writel(0x0, SOCFPGA_SDR_ADDRESS
+ addr
);
2713 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add2
);
2714 writel(0x0, SOCFPGA_SDR_ADDRESS
+ addr
);
2717 * CNTR 3 - Set the nop counter to the number of cycles we
2718 * need to loop for, minus 1.
2720 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr3
);
2721 writel(rw_wl_nop_cycles
- 1, SOCFPGA_SDR_ADDRESS
+ addr
);
2723 mcc_instruction
= RW_MGR_LFSR_WR_RD_DM_BANK_0
;
2724 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add3
);
2725 writel(RW_MGR_LFSR_WR_RD_DM_BANK_0_NOP
, SOCFPGA_SDR_ADDRESS
+ addr
);
2727 mcc_instruction
= RW_MGR_LFSR_WR_RD_BANK_0
;
2728 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add3
);
2729 writel(RW_MGR_LFSR_WR_RD_BANK_0_NOP
, SOCFPGA_SDR_ADDRESS
+ addr
);
2733 addr
= sdr_get_addr((u32
*)RW_MGR_RESET_READ_DATAPATH
);
2734 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
2736 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr0
);
2737 if (quick_write_mode
)
2738 writel(0x08, SOCFPGA_SDR_ADDRESS
+ addr
);
2740 writel(0x40, SOCFPGA_SDR_ADDRESS
+ addr
);
2742 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add0
);
2743 writel(mcc_instruction
, SOCFPGA_SDR_ADDRESS
+ addr
);
2746 * CNTR 1 - This is used to ensure enough time elapses
2747 * for read data to come back.
2749 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr1
);
2750 writel(0x30, SOCFPGA_SDR_ADDRESS
+ addr
);
2752 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add1
);
2754 writel(RW_MGR_LFSR_WR_RD_DM_BANK_0_WAIT
, SOCFPGA_SDR_ADDRESS
+ addr
);
2756 writel(RW_MGR_LFSR_WR_RD_BANK_0_WAIT
, SOCFPGA_SDR_ADDRESS
+ addr
);
2759 addr
= sdr_get_addr((u32
*)RW_MGR_RUN_SINGLE_GROUP
);
2760 writel(mcc_instruction
, SOCFPGA_SDR_ADDRESS
+ addr
+ (group
<< 2));
2763 /* Test writes, can check for a single bit pass or multiple bit pass */
2764 static uint32_t rw_mgr_mem_calibrate_write_test(uint32_t rank_bgn
,
2765 uint32_t write_group
, uint32_t use_dm
, uint32_t all_correct
,
2766 uint32_t *bit_chk
, uint32_t all_ranks
)
2770 uint32_t correct_mask_vg
;
2771 uint32_t tmp_bit_chk
;
2773 uint32_t rank_end
= all_ranks
? RW_MGR_MEM_NUMBER_OF_RANKS
:
2774 (rank_bgn
+ NUM_RANKS_PER_SHADOW_REG
);
2775 uint32_t addr_rw_mgr
;
2776 uint32_t base_rw_mgr
;
2778 *bit_chk
= param
->write_correct_mask
;
2779 correct_mask_vg
= param
->write_correct_mask_vg
;
2781 for (r
= rank_bgn
; r
< rank_end
; r
++) {
2782 if (param
->skip_ranks
[r
]) {
2783 /* request to skip the rank */
2788 set_rank_and_odt_mask(r
, RW_MGR_ODT_MODE_READ_WRITE
);
2791 addr
= sdr_get_addr(&phy_mgr_cmd
->fifo_reset
);
2792 addr_rw_mgr
= sdr_get_addr((u32
*)BASE_RW_MGR
);
2793 for (vg
= RW_MGR_MEM_VIRTUAL_GROUPS_PER_WRITE_DQS
-1; ; vg
--) {
2794 /* reset the fifos to get pointers to known state */
2795 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
2797 tmp_bit_chk
= tmp_bit_chk
<<
2798 (RW_MGR_MEM_DQ_PER_WRITE_DQS
/
2799 RW_MGR_MEM_VIRTUAL_GROUPS_PER_WRITE_DQS
);
2800 rw_mgr_mem_calibrate_write_test_issue(write_group
*
2801 RW_MGR_MEM_VIRTUAL_GROUPS_PER_WRITE_DQS
+vg
,
2804 base_rw_mgr
= readl(SOCFPGA_SDR_ADDRESS
+ addr_rw_mgr
);
2805 tmp_bit_chk
= tmp_bit_chk
| (correct_mask_vg
& ~(base_rw_mgr
));
2809 *bit_chk
&= tmp_bit_chk
;
2813 set_rank_and_odt_mask(0, RW_MGR_ODT_MODE_OFF
);
2814 debug_cond(DLEVEL
== 2, "write_test(%u,%u,ALL) : %u == \
2815 %u => %lu", write_group
, use_dm
,
2816 *bit_chk
, param
->write_correct_mask
,
2817 (long unsigned int)(*bit_chk
==
2818 param
->write_correct_mask
));
2819 return *bit_chk
== param
->write_correct_mask
;
2821 set_rank_and_odt_mask(0, RW_MGR_ODT_MODE_OFF
);
2822 debug_cond(DLEVEL
== 2, "write_test(%u,%u,ONE) : %u != ",
2823 write_group
, use_dm
, *bit_chk
);
2824 debug_cond(DLEVEL
== 2, "%lu" " => %lu", (long unsigned int)0,
2825 (long unsigned int)(*bit_chk
!= 0));
2826 return *bit_chk
!= 0x00;
2831 * center all windows. do per-bit-deskew to possibly increase size of
2834 static uint32_t rw_mgr_mem_calibrate_writes_center(uint32_t rank_bgn
,
2835 uint32_t write_group
, uint32_t test_bgn
)
2837 uint32_t i
, p
, min_index
;
2840 * Store these as signed since there are comparisons with
2844 uint32_t sticky_bit_chk
;
2845 int32_t left_edge
[RW_MGR_MEM_DQ_PER_WRITE_DQS
];
2846 int32_t right_edge
[RW_MGR_MEM_DQ_PER_WRITE_DQS
];
2848 int32_t mid_min
, orig_mid_min
;
2849 int32_t new_dqs
, start_dqs
, shift_dq
;
2850 int32_t dq_margin
, dqs_margin
, dm_margin
;
2852 uint32_t temp_dq_out1_delay
;
2855 debug("%s:%d %u %u", __func__
, __LINE__
, write_group
, test_bgn
);
2859 addr
= sdr_get_addr((u32
*)SCC_MGR_IO_OUT1_DELAY
);
2860 start_dqs
= readl(SOCFPGA_SDR_ADDRESS
+ addr
+
2861 (RW_MGR_MEM_DQ_PER_WRITE_DQS
<< 2));
2863 /* per-bit deskew */
2866 * set the left and right edge of each bit to an illegal value
2867 * use (IO_IO_OUT1_DELAY_MAX + 1) as an illegal value.
2870 for (i
= 0; i
< RW_MGR_MEM_DQ_PER_WRITE_DQS
; i
++) {
2871 left_edge
[i
] = IO_IO_OUT1_DELAY_MAX
+ 1;
2872 right_edge
[i
] = IO_IO_OUT1_DELAY_MAX
+ 1;
2875 /* Search for the left edge of the window for each bit */
2876 addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
2877 for (d
= 0; d
<= IO_IO_OUT1_DELAY_MAX
; d
++) {
2878 scc_mgr_apply_group_dq_out1_delay(write_group
, test_bgn
, d
);
2880 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
2883 * Stop searching when the read test doesn't pass AND when
2884 * we've seen a passing read on every bit.
2886 stop
= !rw_mgr_mem_calibrate_write_test(rank_bgn
, write_group
,
2887 0, PASS_ONE_BIT
, &bit_chk
, 0);
2888 sticky_bit_chk
= sticky_bit_chk
| bit_chk
;
2889 stop
= stop
&& (sticky_bit_chk
== param
->write_correct_mask
);
2890 debug_cond(DLEVEL
== 2, "write_center(left): dtap=%d => %u \
2891 == %u && %u [bit_chk= %u ]\n",
2892 d
, sticky_bit_chk
, param
->write_correct_mask
,
2898 for (i
= 0; i
< RW_MGR_MEM_DQ_PER_WRITE_DQS
; i
++) {
2901 * Remember a passing test as the
2907 * If a left edge has not been seen
2908 * yet, then a future passing test will
2909 * mark this edge as the right edge.
2912 IO_IO_OUT1_DELAY_MAX
+ 1) {
2913 right_edge
[i
] = -(d
+ 1);
2916 debug_cond(DLEVEL
== 2, "write_center[l,d=%d):", d
);
2917 debug_cond(DLEVEL
== 2, "bit_chk_test=%d left_edge[%u]: %d",
2918 (int)(bit_chk
& 1), i
, left_edge
[i
]);
2919 debug_cond(DLEVEL
== 2, "right_edge[%u]: %d\n", i
,
2921 bit_chk
= bit_chk
>> 1;
2926 /* Reset DQ delay chains to 0 */
2927 scc_mgr_apply_group_dq_out1_delay(write_group
, test_bgn
, 0);
2929 for (i
= RW_MGR_MEM_DQ_PER_WRITE_DQS
- 1;; i
--) {
2930 debug_cond(DLEVEL
== 2, "%s:%d write_center: left_edge[%u]: \
2931 %d right_edge[%u]: %d\n", __func__
, __LINE__
,
2932 i
, left_edge
[i
], i
, right_edge
[i
]);
2935 * Check for cases where we haven't found the left edge,
2936 * which makes our assignment of the the right edge invalid.
2937 * Reset it to the illegal value.
2939 if ((left_edge
[i
] == IO_IO_OUT1_DELAY_MAX
+ 1) &&
2940 (right_edge
[i
] != IO_IO_OUT1_DELAY_MAX
+ 1)) {
2941 right_edge
[i
] = IO_IO_OUT1_DELAY_MAX
+ 1;
2942 debug_cond(DLEVEL
== 2, "%s:%d write_center: reset \
2943 right_edge[%u]: %d\n", __func__
, __LINE__
,
2948 * Reset sticky bit (except for bits where we have
2949 * seen the left edge).
2951 sticky_bit_chk
= sticky_bit_chk
<< 1;
2952 if ((left_edge
[i
] != IO_IO_OUT1_DELAY_MAX
+ 1))
2953 sticky_bit_chk
= sticky_bit_chk
| 1;
2959 /* Search for the right edge of the window for each bit */
2960 addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
2961 for (d
= 0; d
<= IO_IO_OUT1_DELAY_MAX
- start_dqs
; d
++) {
2962 scc_mgr_apply_group_dqs_io_and_oct_out1(write_group
,
2965 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
2968 * Stop searching when the read test doesn't pass AND when
2969 * we've seen a passing read on every bit.
2971 stop
= !rw_mgr_mem_calibrate_write_test(rank_bgn
, write_group
,
2972 0, PASS_ONE_BIT
, &bit_chk
, 0);
2974 sticky_bit_chk
= sticky_bit_chk
| bit_chk
;
2975 stop
= stop
&& (sticky_bit_chk
== param
->write_correct_mask
);
2977 debug_cond(DLEVEL
== 2, "write_center (right): dtap=%u => %u == \
2978 %u && %u\n", d
, sticky_bit_chk
,
2979 param
->write_correct_mask
, stop
);
2983 for (i
= 0; i
< RW_MGR_MEM_DQ_PER_WRITE_DQS
;
2985 /* d = 0 failed, but it passed when
2986 testing the left edge, so it must be
2987 marginal, set it to -1 */
2988 if (right_edge
[i
] ==
2989 IO_IO_OUT1_DELAY_MAX
+ 1 &&
2991 IO_IO_OUT1_DELAY_MAX
+ 1) {
2998 for (i
= 0; i
< RW_MGR_MEM_DQ_PER_WRITE_DQS
; i
++) {
3001 * Remember a passing test as
3008 * If a right edge has not
3009 * been seen yet, then a future
3010 * passing test will mark this
3011 * edge as the left edge.
3013 if (right_edge
[i
] ==
3014 IO_IO_OUT1_DELAY_MAX
+ 1)
3015 left_edge
[i
] = -(d
+ 1);
3018 * d = 0 failed, but it passed
3019 * when testing the left edge,
3020 * so it must be marginal, set
3023 if (right_edge
[i
] ==
3024 IO_IO_OUT1_DELAY_MAX
+ 1 &&
3026 IO_IO_OUT1_DELAY_MAX
+ 1)
3029 * If a right edge has not been
3030 * seen yet, then a future
3031 * passing test will mark this
3032 * edge as the left edge.
3034 else if (right_edge
[i
] ==
3035 IO_IO_OUT1_DELAY_MAX
+
3037 left_edge
[i
] = -(d
+ 1);
3040 debug_cond(DLEVEL
== 2, "write_center[r,d=%d):", d
);
3041 debug_cond(DLEVEL
== 2, "bit_chk_test=%d left_edge[%u]: %d",
3042 (int)(bit_chk
& 1), i
, left_edge
[i
]);
3043 debug_cond(DLEVEL
== 2, "right_edge[%u]: %d\n", i
,
3045 bit_chk
= bit_chk
>> 1;
3050 /* Check that all bits have a window */
3051 for (i
= 0; i
< RW_MGR_MEM_DQ_PER_WRITE_DQS
; i
++) {
3052 debug_cond(DLEVEL
== 2, "%s:%d write_center: left_edge[%u]: \
3053 %d right_edge[%u]: %d", __func__
, __LINE__
,
3054 i
, left_edge
[i
], i
, right_edge
[i
]);
3055 if ((left_edge
[i
] == IO_IO_OUT1_DELAY_MAX
+ 1) ||
3056 (right_edge
[i
] == IO_IO_OUT1_DELAY_MAX
+ 1)) {
3057 set_failing_group_stage(test_bgn
+ i
,
3059 CAL_SUBSTAGE_WRITES_CENTER
);
3064 /* Find middle of window for each DQ bit */
3065 mid_min
= left_edge
[0] - right_edge
[0];
3067 for (i
= 1; i
< RW_MGR_MEM_DQ_PER_WRITE_DQS
; i
++) {
3068 mid
= left_edge
[i
] - right_edge
[i
];
3069 if (mid
< mid_min
) {
3076 * -mid_min/2 represents the amount that we need to move DQS.
3077 * If mid_min is odd and positive we'll need to add one to
3078 * make sure the rounding in further calculations is correct
3079 * (always bias to the right), so just add 1 for all positive values.
3083 mid_min
= mid_min
/ 2;
3084 debug_cond(DLEVEL
== 1, "%s:%d write_center: mid_min=%d\n", __func__
,
3087 /* Determine the amount we can change DQS (which is -mid_min) */
3088 orig_mid_min
= mid_min
;
3089 new_dqs
= start_dqs
;
3091 debug_cond(DLEVEL
== 1, "%s:%d write_center: start_dqs=%d new_dqs=%d \
3092 mid_min=%d\n", __func__
, __LINE__
, start_dqs
, new_dqs
, mid_min
);
3093 /* Initialize data for export structures */
3094 dqs_margin
= IO_IO_OUT1_DELAY_MAX
+ 1;
3095 dq_margin
= IO_IO_OUT1_DELAY_MAX
+ 1;
3097 /* add delay to bring centre of all DQ windows to the same "level" */
3098 addr
= sdr_get_addr((u32
*)SCC_MGR_IO_OUT1_DELAY
);
3099 for (i
= 0, p
= test_bgn
; i
< RW_MGR_MEM_DQ_PER_WRITE_DQS
; i
++, p
++) {
3100 /* Use values before divide by 2 to reduce round off error */
3101 shift_dq
= (left_edge
[i
] - right_edge
[i
] -
3102 (left_edge
[min_index
] - right_edge
[min_index
]))/2 +
3103 (orig_mid_min
- mid_min
);
3105 debug_cond(DLEVEL
== 2, "%s:%d write_center: before: shift_dq \
3106 [%u]=%d\n", __func__
, __LINE__
, i
, shift_dq
);
3108 temp_dq_out1_delay
= readl(SOCFPGA_SDR_ADDRESS
+ addr
+ (i
<< 2));
3109 if (shift_dq
+ (int32_t)temp_dq_out1_delay
>
3110 (int32_t)IO_IO_OUT1_DELAY_MAX
) {
3111 shift_dq
= (int32_t)IO_IO_OUT1_DELAY_MAX
- temp_dq_out1_delay
;
3112 } else if (shift_dq
+ (int32_t)temp_dq_out1_delay
< 0) {
3113 shift_dq
= -(int32_t)temp_dq_out1_delay
;
3115 debug_cond(DLEVEL
== 2, "write_center: after: shift_dq[%u]=%d\n",
3117 scc_mgr_set_dq_out1_delay(write_group
, i
, temp_dq_out1_delay
+
3121 debug_cond(DLEVEL
== 2, "write_center: margin[%u]=[%d,%d]\n", i
,
3122 left_edge
[i
] - shift_dq
+ (-mid_min
),
3123 right_edge
[i
] + shift_dq
- (-mid_min
));
3124 /* To determine values for export structures */
3125 if (left_edge
[i
] - shift_dq
+ (-mid_min
) < dq_margin
)
3126 dq_margin
= left_edge
[i
] - shift_dq
+ (-mid_min
);
3128 if (right_edge
[i
] + shift_dq
- (-mid_min
) < dqs_margin
)
3129 dqs_margin
= right_edge
[i
] + shift_dq
- (-mid_min
);
3133 scc_mgr_apply_group_dqs_io_and_oct_out1(write_group
, new_dqs
);
3134 addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
3135 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
3138 debug_cond(DLEVEL
== 2, "%s:%d write_center: DM\n", __func__
, __LINE__
);
3141 * set the left and right edge of each bit to an illegal value,
3142 * use (IO_IO_OUT1_DELAY_MAX + 1) as an illegal value,
3144 left_edge
[0] = IO_IO_OUT1_DELAY_MAX
+ 1;
3145 right_edge
[0] = IO_IO_OUT1_DELAY_MAX
+ 1;
3146 int32_t bgn_curr
= IO_IO_OUT1_DELAY_MAX
+ 1;
3147 int32_t end_curr
= IO_IO_OUT1_DELAY_MAX
+ 1;
3148 int32_t bgn_best
= IO_IO_OUT1_DELAY_MAX
+ 1;
3149 int32_t end_best
= IO_IO_OUT1_DELAY_MAX
+ 1;
3150 int32_t win_best
= 0;
3152 /* Search for the/part of the window with DM shift */
3153 addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
3154 for (d
= IO_IO_OUT1_DELAY_MAX
; d
>= 0; d
-= DELTA_D
) {
3155 scc_mgr_apply_group_dm_out1_delay(write_group
, d
);
3156 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
3158 if (rw_mgr_mem_calibrate_write_test(rank_bgn
, write_group
, 1,
3159 PASS_ALL_BITS
, &bit_chk
,
3161 /* USE Set current end of the window */
3164 * If a starting edge of our window has not been seen
3165 * this is our current start of the DM window.
3167 if (bgn_curr
== IO_IO_OUT1_DELAY_MAX
+ 1)
3171 * If current window is bigger than best seen.
3172 * Set best seen to be current window.
3174 if ((end_curr
-bgn_curr
+1) > win_best
) {
3175 win_best
= end_curr
-bgn_curr
+1;
3176 bgn_best
= bgn_curr
;
3177 end_best
= end_curr
;
3180 /* We just saw a failing test. Reset temp edge */
3181 bgn_curr
= IO_IO_OUT1_DELAY_MAX
+ 1;
3182 end_curr
= IO_IO_OUT1_DELAY_MAX
+ 1;
3187 /* Reset DM delay chains to 0 */
3188 scc_mgr_apply_group_dm_out1_delay(write_group
, 0);
3191 * Check to see if the current window nudges up aganist 0 delay.
3192 * If so we need to continue the search by shifting DQS otherwise DQS
3193 * search begins as a new search. */
3194 if (end_curr
!= 0) {
3195 bgn_curr
= IO_IO_OUT1_DELAY_MAX
+ 1;
3196 end_curr
= IO_IO_OUT1_DELAY_MAX
+ 1;
3199 /* Search for the/part of the window with DQS shifts */
3200 addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
3201 for (d
= 0; d
<= IO_IO_OUT1_DELAY_MAX
- new_dqs
; d
+= DELTA_D
) {
3203 * Note: This only shifts DQS, so are we limiting ourselve to
3204 * width of DQ unnecessarily.
3206 scc_mgr_apply_group_dqs_io_and_oct_out1(write_group
,
3209 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
3210 if (rw_mgr_mem_calibrate_write_test(rank_bgn
, write_group
, 1,
3211 PASS_ALL_BITS
, &bit_chk
,
3213 /* USE Set current end of the window */
3216 * If a beginning edge of our window has not been seen
3217 * this is our current begin of the DM window.
3219 if (bgn_curr
== IO_IO_OUT1_DELAY_MAX
+ 1)
3223 * If current window is bigger than best seen. Set best
3224 * seen to be current window.
3226 if ((end_curr
-bgn_curr
+1) > win_best
) {
3227 win_best
= end_curr
-bgn_curr
+1;
3228 bgn_best
= bgn_curr
;
3229 end_best
= end_curr
;
3232 /* We just saw a failing test. Reset temp edge */
3233 bgn_curr
= IO_IO_OUT1_DELAY_MAX
+ 1;
3234 end_curr
= IO_IO_OUT1_DELAY_MAX
+ 1;
3236 /* Early exit optimization: if ther remaining delay
3237 chain space is less than already seen largest window
3240 (IO_IO_OUT1_DELAY_MAX
- new_dqs
- d
)) {
3246 /* assign left and right edge for cal and reporting; */
3247 left_edge
[0] = -1*bgn_best
;
3248 right_edge
[0] = end_best
;
3250 debug_cond(DLEVEL
== 2, "%s:%d dm_calib: left=%d right=%d\n", __func__
,
3251 __LINE__
, left_edge
[0], right_edge
[0]);
3253 /* Move DQS (back to orig) */
3254 scc_mgr_apply_group_dqs_io_and_oct_out1(write_group
, new_dqs
);
3258 /* Find middle of window for the DM bit */
3259 mid
= (left_edge
[0] - right_edge
[0]) / 2;
3261 /* only move right, since we are not moving DQS/DQ */
3265 /* dm_marign should fail if we never find a window */
3269 dm_margin
= left_edge
[0] - mid
;
3271 scc_mgr_apply_group_dm_out1_delay(write_group
, mid
);
3272 addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
3273 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
3275 debug_cond(DLEVEL
== 2, "%s:%d dm_calib: left=%d right=%d mid=%d \
3276 dm_margin=%d\n", __func__
, __LINE__
, left_edge
[0],
3277 right_edge
[0], mid
, dm_margin
);
3279 gbl
->fom_out
+= dq_margin
+ dqs_margin
;
3281 debug_cond(DLEVEL
== 2, "%s:%d write_center: dq_margin=%d \
3282 dqs_margin=%d dm_margin=%d\n", __func__
, __LINE__
,
3283 dq_margin
, dqs_margin
, dm_margin
);
3286 * Do not remove this line as it makes sure all of our
3287 * decisions have been applied.
3289 addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
3290 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
3291 return (dq_margin
>= 0) && (dqs_margin
>= 0) && (dm_margin
>= 0);
3294 /* calibrate the write operations */
3295 static uint32_t rw_mgr_mem_calibrate_writes(uint32_t rank_bgn
, uint32_t g
,
3298 /* update info for sims */
3299 debug("%s:%d %u %u\n", __func__
, __LINE__
, g
, test_bgn
);
3301 reg_file_set_stage(CAL_STAGE_WRITES
);
3302 reg_file_set_sub_stage(CAL_SUBSTAGE_WRITES_CENTER
);
3304 reg_file_set_group(g
);
3306 if (!rw_mgr_mem_calibrate_writes_center(rank_bgn
, g
, test_bgn
)) {
3307 set_failing_group_stage(g
, CAL_STAGE_WRITES
,
3308 CAL_SUBSTAGE_WRITES_CENTER
);
3315 /* precharge all banks and activate row 0 in bank "000..." and bank "111..." */
3316 static void mem_precharge_and_activate(void)
3321 for (r
= 0; r
< RW_MGR_MEM_NUMBER_OF_RANKS
; r
++) {
3322 if (param
->skip_ranks
[r
]) {
3323 /* request to skip the rank */
3328 set_rank_and_odt_mask(r
, RW_MGR_ODT_MODE_OFF
);
3330 /* precharge all banks ... */
3331 addr
= sdr_get_addr((u32
*)RW_MGR_RUN_SINGLE_GROUP
);
3332 writel(RW_MGR_PRECHARGE_ALL
, SOCFPGA_SDR_ADDRESS
+ addr
);
3334 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr0
);
3335 writel(0x0F, SOCFPGA_SDR_ADDRESS
+ addr
);
3336 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add0
);
3337 writel(RW_MGR_ACTIVATE_0_AND_1_WAIT1
, SOCFPGA_SDR_ADDRESS
+ addr
);
3339 addr
= sdr_get_addr(&sdr_rw_load_mgr_regs
->load_cntr1
);
3340 writel(0x0F, SOCFPGA_SDR_ADDRESS
+ addr
);
3341 addr
= sdr_get_addr(&sdr_rw_load_jump_mgr_regs
->load_jump_add1
);
3342 writel(RW_MGR_ACTIVATE_0_AND_1_WAIT2
, SOCFPGA_SDR_ADDRESS
+ addr
);
3345 addr
= sdr_get_addr((u32
*)RW_MGR_RUN_SINGLE_GROUP
);
3346 writel(RW_MGR_ACTIVATE_0_AND_1
, SOCFPGA_SDR_ADDRESS
+ addr
);
3350 /* Configure various memory related parameters. */
3351 static void mem_config(void)
3353 uint32_t rlat
, wlat
;
3354 uint32_t rw_wl_nop_cycles
;
3355 uint32_t max_latency
;
3358 debug("%s:%d\n", __func__
, __LINE__
);
3359 /* read in write and read latency */
3360 addr
= sdr_get_addr(&data_mgr
->t_wl_add
);
3361 wlat
= readl(SOCFPGA_SDR_ADDRESS
+ addr
);
3363 addr
= sdr_get_addr(&data_mgr
->mem_t_add
);
3364 wlat
+= readl(SOCFPGA_SDR_ADDRESS
+ addr
);
3365 /* WL for hard phy does not include additive latency */
3368 * add addtional write latency to offset the address/command extra
3369 * clock cycle. We change the AC mux setting causing AC to be delayed
3370 * by one mem clock cycle. Only do this for DDR3
3374 addr
= sdr_get_addr(&data_mgr
->t_rl_add
);
3375 rlat
= readl(SOCFPGA_SDR_ADDRESS
+ addr
);
3377 rw_wl_nop_cycles
= wlat
- 2;
3378 gbl
->rw_wl_nop_cycles
= rw_wl_nop_cycles
;
3381 * For AV/CV, lfifo is hardened and always runs at full rate so
3382 * max latency in AFI clocks, used here, is correspondingly smaller.
3384 max_latency
= (1<<MAX_LATENCY_COUNT_WIDTH
)/1 - 1;
3385 /* configure for a burst length of 8 */
3388 /* Adjust Write Latency for Hard PHY */
3391 /* set a pretty high read latency initially */
3392 gbl
->curr_read_lat
= rlat
+ 16;
3394 if (gbl
->curr_read_lat
> max_latency
)
3395 gbl
->curr_read_lat
= max_latency
;
3397 addr
= sdr_get_addr(&phy_mgr_cfg
->phy_rlat
);
3398 writel(gbl
->curr_read_lat
, SOCFPGA_SDR_ADDRESS
+ addr
);
3400 /* advertise write latency */
3401 gbl
->curr_write_lat
= wlat
;
3402 addr
= sdr_get_addr(&phy_mgr_cfg
->afi_wlat
);
3403 writel(wlat
- 2, SOCFPGA_SDR_ADDRESS
+ addr
);
3405 /* initialize bit slips */
3406 mem_precharge_and_activate();
3409 /* Set VFIFO and LFIFO to instant-on settings in skip calibration mode */
3410 static void mem_skip_calibrate(void)
3412 uint32_t vfifo_offset
;
3416 debug("%s:%d\n", __func__
, __LINE__
);
3417 /* Need to update every shadow register set used by the interface */
3418 for (r
= 0; r
< RW_MGR_MEM_NUMBER_OF_RANKS
;
3419 r
+= NUM_RANKS_PER_SHADOW_REG
) {
3421 * Set output phase alignment settings appropriate for
3424 for (i
= 0; i
< RW_MGR_MEM_IF_READ_DQS_WIDTH
; i
++) {
3425 scc_mgr_set_dqs_en_phase(i
, 0);
3426 #if IO_DLL_CHAIN_LENGTH == 6
3427 scc_mgr_set_dqdqs_output_phase(i
, 6);
3429 scc_mgr_set_dqdqs_output_phase(i
, 7);
3434 * Write data arrives to the I/O two cycles before write
3435 * latency is reached (720 deg).
3436 * -> due to bit-slip in a/c bus
3437 * -> to allow board skew where dqs is longer than ck
3438 * -> how often can this happen!?
3439 * -> can claim back some ptaps for high freq
3440 * support if we can relax this, but i digress...
3442 * The write_clk leads mem_ck by 90 deg
3443 * The minimum ptap of the OPA is 180 deg
3444 * Each ptap has (360 / IO_DLL_CHAIN_LENGH) deg of delay
3445 * The write_clk is always delayed by 2 ptaps
3447 * Hence, to make DQS aligned to CK, we need to delay
3449 * (720 - 90 - 180 - 2 * (360 / IO_DLL_CHAIN_LENGTH))
3451 * Dividing the above by (360 / IO_DLL_CHAIN_LENGTH)
3452 * gives us the number of ptaps, which simplies to:
3454 * (1.25 * IO_DLL_CHAIN_LENGTH - 2)
3456 scc_mgr_set_dqdqs_output_phase(i
, (1.25 *
3457 IO_DLL_CHAIN_LENGTH
- 2));
3459 addr
= sdr_get_addr(&sdr_scc_mgr
->dqs_ena
);
3460 writel(0xff, SOCFPGA_SDR_ADDRESS
+ addr
);
3461 addr
= sdr_get_addr(&sdr_scc_mgr
->dqs_io_ena
);
3462 writel(0xff, SOCFPGA_SDR_ADDRESS
+ addr
);
3464 addr
= sdr_get_addr((u32
*)SCC_MGR_GROUP_COUNTER
);
3465 for (i
= 0; i
< RW_MGR_MEM_IF_WRITE_DQS_WIDTH
; i
++) {
3466 writel(i
, SOCFPGA_SDR_ADDRESS
+ addr
);
3468 addr
= sdr_get_addr(&sdr_scc_mgr
->dq_ena
);
3469 writel(0xff, SOCFPGA_SDR_ADDRESS
+ addr
);
3470 addr
= sdr_get_addr(&sdr_scc_mgr
->dm_ena
);
3471 writel(0xff, SOCFPGA_SDR_ADDRESS
+ addr
);
3472 addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
3473 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
3476 /* Compensate for simulation model behaviour */
3477 for (i
= 0; i
< RW_MGR_MEM_IF_READ_DQS_WIDTH
; i
++) {
3478 scc_mgr_set_dqs_bus_in_delay(i
, 10);
3479 scc_mgr_load_dqs(i
);
3481 addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
3482 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
3485 * ArriaV has hard FIFOs that can only be initialized by incrementing
3488 vfifo_offset
= CALIB_VFIFO_OFFSET
;
3489 addr
= sdr_get_addr(&phy_mgr_cmd
->inc_vfifo_hard_phy
);
3490 for (j
= 0; j
< vfifo_offset
; j
++) {
3491 writel(0xff, SOCFPGA_SDR_ADDRESS
+ addr
);
3493 addr
= sdr_get_addr(&phy_mgr_cmd
->fifo_reset
);
3494 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
3497 * For ACV with hard lfifo, we get the skip-cal setting from
3498 * generation-time constant.
3500 gbl
->curr_read_lat
= CALIB_LFIFO_OFFSET
;
3501 addr
= sdr_get_addr(&phy_mgr_cfg
->phy_rlat
);
3502 writel(gbl
->curr_read_lat
, SOCFPGA_SDR_ADDRESS
+ addr
);
3505 /* Memory calibration entry point */
3506 static uint32_t mem_calibrate(void)
3509 uint32_t rank_bgn
, sr
;
3510 uint32_t write_group
, write_test_bgn
;
3511 uint32_t read_group
, read_test_bgn
;
3512 uint32_t run_groups
, current_run
;
3513 uint32_t failing_groups
= 0;
3514 uint32_t group_failed
= 0;
3515 uint32_t sr_failed
= 0;
3518 debug("%s:%d\n", __func__
, __LINE__
);
3519 /* Initialize the data settings */
3521 gbl
->error_substage
= CAL_SUBSTAGE_NIL
;
3522 gbl
->error_stage
= CAL_STAGE_NIL
;
3523 gbl
->error_group
= 0xff;
3529 uint32_t bypass_mode
= 0x1;
3530 addr
= sdr_get_addr((u32
*)SCC_MGR_GROUP_COUNTER
);
3531 for (i
= 0; i
< RW_MGR_MEM_IF_READ_DQS_WIDTH
; i
++) {
3532 writel(i
, SOCFPGA_SDR_ADDRESS
+ addr
);
3533 scc_set_bypass_mode(i
, bypass_mode
);
3536 if ((dyn_calib_steps
& CALIB_SKIP_ALL
) == CALIB_SKIP_ALL
) {
3538 * Set VFIFO and LFIFO to instant-on settings in skip
3541 mem_skip_calibrate();
3543 for (i
= 0; i
< NUM_CALIB_REPEAT
; i
++) {
3545 * Zero all delay chain/phase settings for all
3546 * groups and all shadow register sets.
3550 run_groups
= ~param
->skip_groups
;
3552 for (write_group
= 0, write_test_bgn
= 0; write_group
3553 < RW_MGR_MEM_IF_WRITE_DQS_WIDTH
; write_group
++,
3554 write_test_bgn
+= RW_MGR_MEM_DQ_PER_WRITE_DQS
) {
3555 /* Initialized the group failure */
3558 current_run
= run_groups
& ((1 <<
3559 RW_MGR_NUM_DQS_PER_WRITE_GROUP
) - 1);
3560 run_groups
= run_groups
>>
3561 RW_MGR_NUM_DQS_PER_WRITE_GROUP
;
3563 if (current_run
== 0)
3566 addr
= sdr_get_addr((u32
*)SCC_MGR_GROUP_COUNTER
);
3567 writel(write_group
, SOCFPGA_SDR_ADDRESS
+ addr
);
3568 scc_mgr_zero_group(write_group
, write_test_bgn
,
3571 for (read_group
= write_group
*
3572 RW_MGR_MEM_IF_READ_DQS_WIDTH
/
3573 RW_MGR_MEM_IF_WRITE_DQS_WIDTH
,
3575 read_group
< (write_group
+ 1) *
3576 RW_MGR_MEM_IF_READ_DQS_WIDTH
/
3577 RW_MGR_MEM_IF_WRITE_DQS_WIDTH
&&
3579 read_group
++, read_test_bgn
+=
3580 RW_MGR_MEM_DQ_PER_READ_DQS
) {
3581 /* Calibrate the VFIFO */
3582 if (!((STATIC_CALIB_STEPS
) &
3583 CALIB_SKIP_VFIFO
)) {
3584 if (!rw_mgr_mem_calibrate_vfifo
3590 phy_debug_mode_flags
&
3591 PHY_DEBUG_SWEEP_ALL_GROUPS
)) {
3598 /* Calibrate the output side */
3599 if (group_failed
== 0) {
3600 for (rank_bgn
= 0, sr
= 0; rank_bgn
3601 < RW_MGR_MEM_NUMBER_OF_RANKS
;
3603 NUM_RANKS_PER_SHADOW_REG
,
3606 if (!((STATIC_CALIB_STEPS
) &
3607 CALIB_SKIP_WRITES
)) {
3608 if ((STATIC_CALIB_STEPS
)
3609 & CALIB_SKIP_DELAY_SWEEPS
) {
3610 /* not needed in quick mode! */
3613 * Determine if this set of
3614 * ranks should be skipped
3617 if (!param
->skip_shadow_regs
[sr
]) {
3618 if (!rw_mgr_mem_calibrate_writes
3619 (rank_bgn
, write_group
,
3623 phy_debug_mode_flags
&
3624 PHY_DEBUG_SWEEP_ALL_GROUPS
)) {
3636 if (group_failed
== 0) {
3637 for (read_group
= write_group
*
3638 RW_MGR_MEM_IF_READ_DQS_WIDTH
/
3639 RW_MGR_MEM_IF_WRITE_DQS_WIDTH
,
3641 read_group
< (write_group
+ 1)
3642 * RW_MGR_MEM_IF_READ_DQS_WIDTH
3643 / RW_MGR_MEM_IF_WRITE_DQS_WIDTH
&&
3645 read_group
++, read_test_bgn
+=
3646 RW_MGR_MEM_DQ_PER_READ_DQS
) {
3647 if (!((STATIC_CALIB_STEPS
) &
3648 CALIB_SKIP_WRITES
)) {
3649 if (!rw_mgr_mem_calibrate_vfifo_end
3650 (read_group
, read_test_bgn
)) {
3653 if (!(gbl
->phy_debug_mode_flags
3654 & PHY_DEBUG_SWEEP_ALL_GROUPS
)) {
3662 if (group_failed
!= 0)
3667 * USER If there are any failing groups then report
3670 if (failing_groups
!= 0)
3673 /* Calibrate the LFIFO */
3674 if (!((STATIC_CALIB_STEPS
) & CALIB_SKIP_LFIFO
)) {
3676 * If we're skipping groups as part of debug,
3677 * don't calibrate LFIFO.
3679 if (param
->skip_groups
== 0) {
3680 if (!rw_mgr_mem_calibrate_lfifo())
3688 * Do not remove this line as it makes sure all of our decisions
3689 * have been applied.
3691 addr
= sdr_get_addr(&sdr_scc_mgr
->update
);
3692 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
3696 static uint32_t run_mem_calibrate(void)
3699 uint32_t debug_info
;
3702 debug("%s:%d\n", __func__
, __LINE__
);
3704 /* Reset pass/fail status shown on afi_cal_success/fail */
3705 addr
= sdr_get_addr(&phy_mgr_cfg
->cal_status
);
3706 writel(PHY_MGR_CAL_RESET
, SOCFPGA_SDR_ADDRESS
+ addr
);
3708 addr
= sdr_get_addr((u32
*)BASE_MMR
);
3709 /* stop tracking manger */
3710 uint32_t ctrlcfg
= readl(SOCFPGA_SDR_ADDRESS
+ addr
);
3712 addr
= sdr_get_addr((u32
*)BASE_MMR
);
3713 writel(ctrlcfg
& 0xFFBFFFFF, SOCFPGA_SDR_ADDRESS
+ addr
);
3716 rw_mgr_mem_initialize();
3718 pass
= mem_calibrate();
3720 mem_precharge_and_activate();
3721 addr
= sdr_get_addr(&phy_mgr_cmd
->fifo_reset
);
3722 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
3726 * Don't return control of the PHY back to AFI when in debug mode.
3728 if ((gbl
->phy_debug_mode_flags
& PHY_DEBUG_IN_DEBUG_MODE
) == 0) {
3729 rw_mgr_mem_handoff();
3731 * In Hard PHY this is a 2-bit control:
3733 * 1: DDIO Mux Select
3735 addr
= sdr_get_addr(&phy_mgr_cfg
->mux_sel
);
3736 writel(0x2, SOCFPGA_SDR_ADDRESS
+ addr
);
3739 addr
= sdr_get_addr((u32
*)BASE_MMR
);
3740 writel(ctrlcfg
, SOCFPGA_SDR_ADDRESS
+ addr
);
3743 printf("%s: CALIBRATION PASSED\n", __FILE__
);
3748 if (gbl
->fom_in
> 0xff)
3751 if (gbl
->fom_out
> 0xff)
3752 gbl
->fom_out
= 0xff;
3754 /* Update the FOM in the register file */
3755 debug_info
= gbl
->fom_in
;
3756 debug_info
|= gbl
->fom_out
<< 8;
3757 addr
= sdr_get_addr(&sdr_reg_file
->fom
);
3758 writel(debug_info
, SOCFPGA_SDR_ADDRESS
+ addr
);
3760 addr
= sdr_get_addr(&phy_mgr_cfg
->cal_debug_info
);
3761 writel(debug_info
, SOCFPGA_SDR_ADDRESS
+ addr
);
3762 addr
= sdr_get_addr(&phy_mgr_cfg
->cal_status
);
3763 writel(PHY_MGR_CAL_SUCCESS
, SOCFPGA_SDR_ADDRESS
+ addr
);
3765 printf("%s: CALIBRATION FAILED\n", __FILE__
);
3767 debug_info
= gbl
->error_stage
;
3768 debug_info
|= gbl
->error_substage
<< 8;
3769 debug_info
|= gbl
->error_group
<< 16;
3771 addr
= sdr_get_addr(&sdr_reg_file
->failing_stage
);
3772 writel(debug_info
, SOCFPGA_SDR_ADDRESS
+ addr
);
3773 addr
= sdr_get_addr(&phy_mgr_cfg
->cal_debug_info
);
3774 writel(debug_info
, SOCFPGA_SDR_ADDRESS
+ addr
);
3775 addr
= sdr_get_addr(&phy_mgr_cfg
->cal_status
);
3776 writel(PHY_MGR_CAL_FAIL
, SOCFPGA_SDR_ADDRESS
+ addr
);
3778 /* Update the failing group/stage in the register file */
3779 debug_info
= gbl
->error_stage
;
3780 debug_info
|= gbl
->error_substage
<< 8;
3781 debug_info
|= gbl
->error_group
<< 16;
3782 addr
= sdr_get_addr(&sdr_reg_file
->failing_stage
);
3783 writel(debug_info
, SOCFPGA_SDR_ADDRESS
+ addr
);
3789 static void hc_initialize_rom_data(void)
3794 addr
= sdr_get_addr((u32
*)(RW_MGR_INST_ROM_WRITE
));
3795 for (i
= 0; i
< ARRAY_SIZE(inst_rom_init
); i
++) {
3796 uint32_t data
= inst_rom_init
[i
];
3797 writel(data
, SOCFPGA_SDR_ADDRESS
+ addr
+ (i
<< 2));
3800 addr
= sdr_get_addr((u32
*)(RW_MGR_AC_ROM_WRITE
));
3801 for (i
= 0; i
< ARRAY_SIZE(ac_rom_init
); i
++) {
3802 uint32_t data
= ac_rom_init
[i
];
3803 writel(data
, SOCFPGA_SDR_ADDRESS
+ addr
+ (i
<< 2));
3807 static void initialize_reg_file(void)
3811 /* Initialize the register file with the correct data */
3812 addr
= sdr_get_addr(&sdr_reg_file
->signature
);
3813 writel(REG_FILE_INIT_SEQ_SIGNATURE
, SOCFPGA_SDR_ADDRESS
+ addr
);
3815 addr
= sdr_get_addr(&sdr_reg_file
->debug_data_addr
);
3816 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
3818 addr
= sdr_get_addr(&sdr_reg_file
->cur_stage
);
3819 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
3821 addr
= sdr_get_addr(&sdr_reg_file
->fom
);
3822 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
3824 addr
= sdr_get_addr(&sdr_reg_file
->failing_stage
);
3825 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
3827 addr
= sdr_get_addr(&sdr_reg_file
->debug1
);
3828 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
3830 addr
= sdr_get_addr(&sdr_reg_file
->debug2
);
3831 writel(0, SOCFPGA_SDR_ADDRESS
+ addr
);
3834 static void initialize_hps_phy(void)
3839 * Tracking also gets configured here because it's in the
3842 uint32_t trk_sample_count
= 7500;
3843 uint32_t trk_long_idle_sample_count
= (10 << 16) | 100;
3845 * Format is number of outer loops in the 16 MSB, sample
3850 reg
|= SDR_CTRLGRP_PHYCTRL_PHYCTRL_0_ACDELAYEN_SET(2);
3851 reg
|= SDR_CTRLGRP_PHYCTRL_PHYCTRL_0_DQDELAYEN_SET(1);
3852 reg
|= SDR_CTRLGRP_PHYCTRL_PHYCTRL_0_DQSDELAYEN_SET(1);
3853 reg
|= SDR_CTRLGRP_PHYCTRL_PHYCTRL_0_DQSLOGICDELAYEN_SET(1);
3854 reg
|= SDR_CTRLGRP_PHYCTRL_PHYCTRL_0_RESETDELAYEN_SET(0);
3855 reg
|= SDR_CTRLGRP_PHYCTRL_PHYCTRL_0_LPDDRDIS_SET(1);
3857 * This field selects the intrinsic latency to RDATA_EN/FULL path.
3858 * 00-bypass, 01- add 5 cycles, 10- add 10 cycles, 11- add 15 cycles.
3860 reg
|= SDR_CTRLGRP_PHYCTRL_PHYCTRL_0_ADDLATSEL_SET(0);
3861 reg
|= SDR_CTRLGRP_PHYCTRL_PHYCTRL_0_SAMPLECOUNT_19_0_SET(
3863 addr
= sdr_get_addr((u32
*)BASE_MMR
);
3864 writel(reg
, SOCFPGA_SDR_ADDRESS
+ addr
+ SDR_CTRLGRP_PHYCTRL_PHYCTRL_0_OFFSET
);
3867 reg
|= SDR_CTRLGRP_PHYCTRL_PHYCTRL_1_SAMPLECOUNT_31_20_SET(
3869 SDR_CTRLGRP_PHYCTRL_PHYCTRL_0_SAMPLECOUNT_19_0_WIDTH
);
3870 reg
|= SDR_CTRLGRP_PHYCTRL_PHYCTRL_1_LONGIDLESAMPLECOUNT_19_0_SET(
3871 trk_long_idle_sample_count
);
3872 writel(reg
, SOCFPGA_SDR_ADDRESS
+ addr
+ SDR_CTRLGRP_PHYCTRL_PHYCTRL_1_OFFSET
);
3875 reg
|= SDR_CTRLGRP_PHYCTRL_PHYCTRL_2_LONGIDLESAMPLECOUNT_31_20_SET(
3876 trk_long_idle_sample_count
>>
3877 SDR_CTRLGRP_PHYCTRL_PHYCTRL_1_LONGIDLESAMPLECOUNT_19_0_WIDTH
);
3878 writel(reg
, SOCFPGA_SDR_ADDRESS
+ addr
+ SDR_CTRLGRP_PHYCTRL_PHYCTRL_2_OFFSET
);
3881 static void initialize_tracking(void)
3883 uint32_t concatenated_longidle
= 0x0;
3884 uint32_t concatenated_delays
= 0x0;
3885 uint32_t concatenated_rw_addr
= 0x0;
3886 uint32_t concatenated_refresh
= 0x0;
3887 uint32_t trk_sample_count
= 7500;
3888 uint32_t dtaps_per_ptap
;
3893 * compute usable version of value in case we skip full
3898 while (tmp_delay
< IO_DELAY_PER_OPA_TAP
) {
3900 tmp_delay
+= IO_DELAY_PER_DCHAIN_TAP
;
3904 concatenated_longidle
= concatenated_longidle
^ 10;
3905 /*longidle outer loop */
3906 concatenated_longidle
= concatenated_longidle
<< 16;
3907 concatenated_longidle
= concatenated_longidle
^ 100;
3908 /*longidle sample count */
3909 concatenated_delays
= concatenated_delays
^ 243;
3910 /* trfc, worst case of 933Mhz 4Gb */
3911 concatenated_delays
= concatenated_delays
<< 8;
3912 concatenated_delays
= concatenated_delays
^ 14;
3913 /* trcd, worst case */
3914 concatenated_delays
= concatenated_delays
<< 8;
3915 concatenated_delays
= concatenated_delays
^ 10;
3917 concatenated_delays
= concatenated_delays
<< 8;
3918 concatenated_delays
= concatenated_delays
^ 4;
3921 concatenated_rw_addr
= concatenated_rw_addr
^ RW_MGR_IDLE
;
3922 concatenated_rw_addr
= concatenated_rw_addr
<< 8;
3923 concatenated_rw_addr
= concatenated_rw_addr
^ RW_MGR_ACTIVATE_1
;
3924 concatenated_rw_addr
= concatenated_rw_addr
<< 8;
3925 concatenated_rw_addr
= concatenated_rw_addr
^ RW_MGR_SGLE_READ
;
3926 concatenated_rw_addr
= concatenated_rw_addr
<< 8;
3927 concatenated_rw_addr
= concatenated_rw_addr
^ RW_MGR_PRECHARGE_ALL
;
3929 concatenated_refresh
= concatenated_refresh
^ RW_MGR_REFRESH_ALL
;
3930 concatenated_refresh
= concatenated_refresh
<< 24;
3931 concatenated_refresh
= concatenated_refresh
^ 1000; /* trefi */
3933 /* Initialize the register file with the correct data */
3934 addr
= sdr_get_addr(&sdr_reg_file
->dtaps_per_ptap
);
3935 writel(dtaps_per_ptap
, SOCFPGA_SDR_ADDRESS
+ addr
);
3937 addr
= sdr_get_addr(&sdr_reg_file
->trk_sample_count
);
3938 writel(trk_sample_count
, SOCFPGA_SDR_ADDRESS
+ addr
);
3940 addr
= sdr_get_addr(&sdr_reg_file
->trk_longidle
);
3941 writel(concatenated_longidle
, SOCFPGA_SDR_ADDRESS
+ addr
);
3943 addr
= sdr_get_addr(&sdr_reg_file
->delays
);
3944 writel(concatenated_delays
, SOCFPGA_SDR_ADDRESS
+ addr
);
3946 addr
= sdr_get_addr(&sdr_reg_file
->trk_rw_mgr_addr
);
3947 writel(concatenated_rw_addr
, SOCFPGA_SDR_ADDRESS
+ addr
);
3949 addr
= sdr_get_addr(&sdr_reg_file
->trk_read_dqs_width
);
3950 writel(RW_MGR_MEM_IF_READ_DQS_WIDTH
, SOCFPGA_SDR_ADDRESS
+ addr
);
3952 addr
= sdr_get_addr(&sdr_reg_file
->trk_rfsh
);
3953 writel(concatenated_refresh
, SOCFPGA_SDR_ADDRESS
+ addr
);
3956 int sdram_calibration_full(void)
3958 struct param_type my_param
;
3959 struct gbl_type my_gbl
;
3966 /* Initialize the debug mode flags */
3967 gbl
->phy_debug_mode_flags
= 0;
3968 /* Set the calibration enabled by default */
3969 gbl
->phy_debug_mode_flags
|= PHY_DEBUG_ENABLE_CAL_RPT
;
3971 * Only sweep all groups (regardless of fail state) by default
3972 * Set enabled read test by default.
3974 #if DISABLE_GUARANTEED_READ
3975 gbl
->phy_debug_mode_flags
|= PHY_DEBUG_DISABLE_GUARANTEED_READ
;
3977 /* Initialize the register file */
3978 initialize_reg_file();
3980 /* Initialize any PHY CSR */
3981 initialize_hps_phy();
3983 scc_mgr_initialize();
3985 initialize_tracking();
3987 /* USER Enable all ranks, groups */
3988 for (i
= 0; i
< RW_MGR_MEM_NUMBER_OF_RANKS
; i
++)
3989 param
->skip_ranks
[i
] = 0;
3990 for (i
= 0; i
< NUM_SHADOW_REGS
; ++i
)
3991 param
->skip_shadow_regs
[i
] = 0;
3992 param
->skip_groups
= 0;
3994 printf("%s: Preparing to start memory calibration\n", __FILE__
);
3996 debug("%s:%d\n", __func__
, __LINE__
);
3997 debug_cond(DLEVEL
== 1,
3998 "DDR3 FULL_RATE ranks=%u cs/dimm=%u dq/dqs=%u,%u vg/dqs=%u,%u ",
3999 RW_MGR_MEM_NUMBER_OF_RANKS
, RW_MGR_MEM_NUMBER_OF_CS_PER_DIMM
,
4000 RW_MGR_MEM_DQ_PER_READ_DQS
, RW_MGR_MEM_DQ_PER_WRITE_DQS
,
4001 RW_MGR_MEM_VIRTUAL_GROUPS_PER_READ_DQS
,
4002 RW_MGR_MEM_VIRTUAL_GROUPS_PER_WRITE_DQS
);
4003 debug_cond(DLEVEL
== 1,
4004 "dqs=%u,%u dq=%u dm=%u ptap_delay=%u dtap_delay=%u ",
4005 RW_MGR_MEM_IF_READ_DQS_WIDTH
, RW_MGR_MEM_IF_WRITE_DQS_WIDTH
,
4006 RW_MGR_MEM_DATA_WIDTH
, RW_MGR_MEM_DATA_MASK_WIDTH
,
4007 IO_DELAY_PER_OPA_TAP
, IO_DELAY_PER_DCHAIN_TAP
);
4008 debug_cond(DLEVEL
== 1, "dtap_dqsen_delay=%u, dll=%u",
4009 IO_DELAY_PER_DQS_EN_DCHAIN_TAP
, IO_DLL_CHAIN_LENGTH
);
4010 debug_cond(DLEVEL
== 1, "max values: en_p=%u dqdqs_p=%u en_d=%u dqs_in_d=%u ",
4011 IO_DQS_EN_PHASE_MAX
, IO_DQDQS_OUT_PHASE_MAX
,
4012 IO_DQS_EN_DELAY_MAX
, IO_DQS_IN_DELAY_MAX
);
4013 debug_cond(DLEVEL
== 1, "io_in_d=%u io_out1_d=%u io_out2_d=%u ",
4014 IO_IO_IN_DELAY_MAX
, IO_IO_OUT1_DELAY_MAX
,
4015 IO_IO_OUT2_DELAY_MAX
);
4016 debug_cond(DLEVEL
== 1, "dqs_in_reserve=%u dqs_out_reserve=%u\n",
4017 IO_DQS_IN_RESERVE
, IO_DQS_OUT_RESERVE
);
4019 hc_initialize_rom_data();
4021 /* update info for sims */
4022 reg_file_set_stage(CAL_STAGE_NIL
);
4023 reg_file_set_group(0);
4026 * Load global needed for those actions that require
4027 * some dynamic calibration support.
4029 dyn_calib_steps
= STATIC_CALIB_STEPS
;
4031 * Load global to allow dynamic selection of delay loop settings
4032 * based on calibration mode.
4034 if (!(dyn_calib_steps
& CALIB_SKIP_DELAY_LOOPS
))
4035 skip_delay_mask
= 0xff;
4037 skip_delay_mask
= 0x0;
4039 pass
= run_mem_calibrate();
4041 printf("%s: Calibration complete\n", __FILE__
);