From: Marek Vasut Date: Tue, 21 Jul 2015 03:43:37 +0000 (+0200) Subject: ddr: altera: Clean up rw_mgr_mem_calibrate_write_test() part 1 X-Git-Tag: v2015.10-rc2~227 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=ad64769ce04578e3e8f4079074b53e13e87c9d25;p=oweals%2Fu-boot.git ddr: altera: Clean up rw_mgr_mem_calibrate_write_test() part 1 Move code around to get rid of the forward declaration. No change to the actual code. Signed-off-by: Marek Vasut --- diff --git a/drivers/ddr/altera/sequencer.c b/drivers/ddr/altera/sequencer.c index 99cd2b2103..659c0d84ca 100644 --- a/drivers/ddr/altera/sequencer.c +++ b/drivers/ddr/altera/sequencer.c @@ -80,10 +80,6 @@ struct gbl_type *gbl; struct param_type *param; uint32_t curr_shadow_reg; -static uint32_t rw_mgr_mem_calibrate_write_test(uint32_t rank_bgn, - uint32_t write_group, uint32_t use_dm, - uint32_t all_correct, uint32_t *bit_chk, uint32_t all_ranks); - static void set_failing_group_stage(uint32_t group, uint32_t stage, uint32_t substage) { @@ -1036,6 +1032,207 @@ static void rw_mgr_mem_handoff(void) */ } +/* + * issue write test command. + * two variants are provided. one that just tests a write pattern and + * another that tests datamask functionality. + */ +static void rw_mgr_mem_calibrate_write_test_issue(uint32_t group, + uint32_t test_dm) +{ + uint32_t mcc_instruction; + uint32_t quick_write_mode = (((STATIC_CALIB_STEPS) & CALIB_SKIP_WRITES) && + ENABLE_SUPER_QUICK_CALIBRATION); + uint32_t rw_wl_nop_cycles; + uint32_t addr; + + /* + * Set counter and jump addresses for the right + * number of NOP cycles. + * The number of supported NOP cycles can range from -1 to infinity + * Three different cases are handled: + * + * 1. For a number of NOP cycles greater than 0, the RW Mgr looping + * mechanism will be used to insert the right number of NOPs + * + * 2. For a number of NOP cycles equals to 0, the micro-instruction + * issuing the write command will jump straight to the + * micro-instruction that turns on DQS (for DDRx), or outputs write + * data (for RLD), skipping + * the NOP micro-instruction all together + * + * 3. A number of NOP cycles equal to -1 indicates that DQS must be + * turned on in the same micro-instruction that issues the write + * command. Then we need + * to directly jump to the micro-instruction that sends out the data + * + * NOTE: Implementing this mechanism uses 2 RW Mgr jump-counters + * (2 and 3). One jump-counter (0) is used to perform multiple + * write-read operations. + * one counter left to issue this command in "multiple-group" mode + */ + + rw_wl_nop_cycles = gbl->rw_wl_nop_cycles; + + if (rw_wl_nop_cycles == -1) { + /* + * CNTR 2 - We want to execute the special write operation that + * turns on DQS right away and then skip directly to the + * instruction that sends out the data. We set the counter to a + * large number so that the jump is always taken. + */ + writel(0xFF, &sdr_rw_load_mgr_regs->load_cntr2); + + /* CNTR 3 - Not used */ + if (test_dm) { + mcc_instruction = RW_MGR_LFSR_WR_RD_DM_BANK_0_WL_1; + writel(RW_MGR_LFSR_WR_RD_DM_BANK_0_DATA, + &sdr_rw_load_jump_mgr_regs->load_jump_add2); + writel(RW_MGR_LFSR_WR_RD_DM_BANK_0_NOP, + &sdr_rw_load_jump_mgr_regs->load_jump_add3); + } else { + mcc_instruction = RW_MGR_LFSR_WR_RD_BANK_0_WL_1; + writel(RW_MGR_LFSR_WR_RD_BANK_0_DATA, + &sdr_rw_load_jump_mgr_regs->load_jump_add2); + writel(RW_MGR_LFSR_WR_RD_BANK_0_NOP, + &sdr_rw_load_jump_mgr_regs->load_jump_add3); + } + } else if (rw_wl_nop_cycles == 0) { + /* + * CNTR 2 - We want to skip the NOP operation and go straight + * to the DQS enable instruction. We set the counter to a large + * number so that the jump is always taken. + */ + writel(0xFF, &sdr_rw_load_mgr_regs->load_cntr2); + + /* CNTR 3 - Not used */ + if (test_dm) { + mcc_instruction = RW_MGR_LFSR_WR_RD_DM_BANK_0; + writel(RW_MGR_LFSR_WR_RD_DM_BANK_0_DQS, + &sdr_rw_load_jump_mgr_regs->load_jump_add2); + } else { + mcc_instruction = RW_MGR_LFSR_WR_RD_BANK_0; + writel(RW_MGR_LFSR_WR_RD_BANK_0_DQS, + &sdr_rw_load_jump_mgr_regs->load_jump_add2); + } + } else { + /* + * CNTR 2 - In this case we want to execute the next instruction + * and NOT take the jump. So we set the counter to 0. The jump + * address doesn't count. + */ + writel(0x0, &sdr_rw_load_mgr_regs->load_cntr2); + writel(0x0, &sdr_rw_load_jump_mgr_regs->load_jump_add2); + + /* + * CNTR 3 - Set the nop counter to the number of cycles we + * need to loop for, minus 1. + */ + writel(rw_wl_nop_cycles - 1, &sdr_rw_load_mgr_regs->load_cntr3); + if (test_dm) { + mcc_instruction = RW_MGR_LFSR_WR_RD_DM_BANK_0; + writel(RW_MGR_LFSR_WR_RD_DM_BANK_0_NOP, + &sdr_rw_load_jump_mgr_regs->load_jump_add3); + } else { + mcc_instruction = RW_MGR_LFSR_WR_RD_BANK_0; + writel(RW_MGR_LFSR_WR_RD_BANK_0_NOP, + &sdr_rw_load_jump_mgr_regs->load_jump_add3); + } + } + + writel(0, SDR_PHYGRP_RWMGRGRP_ADDRESS | + RW_MGR_RESET_READ_DATAPATH_OFFSET); + + if (quick_write_mode) + writel(0x08, &sdr_rw_load_mgr_regs->load_cntr0); + else + writel(0x40, &sdr_rw_load_mgr_regs->load_cntr0); + + writel(mcc_instruction, &sdr_rw_load_jump_mgr_regs->load_jump_add0); + + /* + * CNTR 1 - This is used to ensure enough time elapses + * for read data to come back. + */ + writel(0x30, &sdr_rw_load_mgr_regs->load_cntr1); + + if (test_dm) { + writel(RW_MGR_LFSR_WR_RD_DM_BANK_0_WAIT, + &sdr_rw_load_jump_mgr_regs->load_jump_add1); + } else { + writel(RW_MGR_LFSR_WR_RD_BANK_0_WAIT, + &sdr_rw_load_jump_mgr_regs->load_jump_add1); + } + + addr = SDR_PHYGRP_RWMGRGRP_ADDRESS | RW_MGR_RUN_SINGLE_GROUP_OFFSET; + writel(mcc_instruction, addr + (group << 2)); +} + +/* Test writes, can check for a single bit pass or multiple bit pass */ +static uint32_t rw_mgr_mem_calibrate_write_test(uint32_t rank_bgn, + uint32_t write_group, uint32_t use_dm, uint32_t all_correct, + uint32_t *bit_chk, uint32_t all_ranks) +{ + uint32_t r; + uint32_t correct_mask_vg; + uint32_t tmp_bit_chk; + uint32_t vg; + uint32_t rank_end = all_ranks ? RW_MGR_MEM_NUMBER_OF_RANKS : + (rank_bgn + NUM_RANKS_PER_SHADOW_REG); + uint32_t addr_rw_mgr; + uint32_t base_rw_mgr; + + *bit_chk = param->write_correct_mask; + correct_mask_vg = param->write_correct_mask_vg; + + for (r = rank_bgn; r < rank_end; r++) { + if (param->skip_ranks[r]) { + /* request to skip the rank */ + continue; + } + + /* set rank */ + set_rank_and_odt_mask(r, RW_MGR_ODT_MODE_READ_WRITE); + + tmp_bit_chk = 0; + addr_rw_mgr = SDR_PHYGRP_RWMGRGRP_ADDRESS; + for (vg = RW_MGR_MEM_VIRTUAL_GROUPS_PER_WRITE_DQS-1; ; vg--) { + /* reset the fifos to get pointers to known state */ + writel(0, &phy_mgr_cmd->fifo_reset); + + tmp_bit_chk = tmp_bit_chk << + (RW_MGR_MEM_DQ_PER_WRITE_DQS / + RW_MGR_MEM_VIRTUAL_GROUPS_PER_WRITE_DQS); + rw_mgr_mem_calibrate_write_test_issue(write_group * + RW_MGR_MEM_VIRTUAL_GROUPS_PER_WRITE_DQS+vg, + use_dm); + + base_rw_mgr = readl(addr_rw_mgr); + tmp_bit_chk = tmp_bit_chk | (correct_mask_vg & ~(base_rw_mgr)); + if (vg == 0) + break; + } + *bit_chk &= tmp_bit_chk; + } + + if (all_correct) { + set_rank_and_odt_mask(0, RW_MGR_ODT_MODE_OFF); + debug_cond(DLEVEL == 2, "write_test(%u,%u,ALL) : %u == \ + %u => %lu", write_group, use_dm, + *bit_chk, param->write_correct_mask, + (long unsigned int)(*bit_chk == + param->write_correct_mask)); + return *bit_chk == param->write_correct_mask; + } else { + set_rank_and_odt_mask(0, RW_MGR_ODT_MODE_OFF); + debug_cond(DLEVEL == 2, "write_test(%u,%u,ONE) : %u != ", + write_group, use_dm, *bit_chk); + debug_cond(DLEVEL == 2, "%lu" " => %lu", (long unsigned int)0, + (long unsigned int)(*bit_chk != 0)); + return *bit_chk != 0x00; + } +} + /** * rw_mgr_mem_calibrate_read_test_patterns() - Read back test patterns * @rank_bgn: Rank number @@ -2682,207 +2879,6 @@ static uint32_t rw_mgr_mem_calibrate_lfifo(void) } } -/* - * issue write test command. - * two variants are provided. one that just tests a write pattern and - * another that tests datamask functionality. - */ -static void rw_mgr_mem_calibrate_write_test_issue(uint32_t group, - uint32_t test_dm) -{ - uint32_t mcc_instruction; - uint32_t quick_write_mode = (((STATIC_CALIB_STEPS) & CALIB_SKIP_WRITES) && - ENABLE_SUPER_QUICK_CALIBRATION); - uint32_t rw_wl_nop_cycles; - uint32_t addr; - - /* - * Set counter and jump addresses for the right - * number of NOP cycles. - * The number of supported NOP cycles can range from -1 to infinity - * Three different cases are handled: - * - * 1. For a number of NOP cycles greater than 0, the RW Mgr looping - * mechanism will be used to insert the right number of NOPs - * - * 2. For a number of NOP cycles equals to 0, the micro-instruction - * issuing the write command will jump straight to the - * micro-instruction that turns on DQS (for DDRx), or outputs write - * data (for RLD), skipping - * the NOP micro-instruction all together - * - * 3. A number of NOP cycles equal to -1 indicates that DQS must be - * turned on in the same micro-instruction that issues the write - * command. Then we need - * to directly jump to the micro-instruction that sends out the data - * - * NOTE: Implementing this mechanism uses 2 RW Mgr jump-counters - * (2 and 3). One jump-counter (0) is used to perform multiple - * write-read operations. - * one counter left to issue this command in "multiple-group" mode - */ - - rw_wl_nop_cycles = gbl->rw_wl_nop_cycles; - - if (rw_wl_nop_cycles == -1) { - /* - * CNTR 2 - We want to execute the special write operation that - * turns on DQS right away and then skip directly to the - * instruction that sends out the data. We set the counter to a - * large number so that the jump is always taken. - */ - writel(0xFF, &sdr_rw_load_mgr_regs->load_cntr2); - - /* CNTR 3 - Not used */ - if (test_dm) { - mcc_instruction = RW_MGR_LFSR_WR_RD_DM_BANK_0_WL_1; - writel(RW_MGR_LFSR_WR_RD_DM_BANK_0_DATA, - &sdr_rw_load_jump_mgr_regs->load_jump_add2); - writel(RW_MGR_LFSR_WR_RD_DM_BANK_0_NOP, - &sdr_rw_load_jump_mgr_regs->load_jump_add3); - } else { - mcc_instruction = RW_MGR_LFSR_WR_RD_BANK_0_WL_1; - writel(RW_MGR_LFSR_WR_RD_BANK_0_DATA, - &sdr_rw_load_jump_mgr_regs->load_jump_add2); - writel(RW_MGR_LFSR_WR_RD_BANK_0_NOP, - &sdr_rw_load_jump_mgr_regs->load_jump_add3); - } - } else if (rw_wl_nop_cycles == 0) { - /* - * CNTR 2 - We want to skip the NOP operation and go straight - * to the DQS enable instruction. We set the counter to a large - * number so that the jump is always taken. - */ - writel(0xFF, &sdr_rw_load_mgr_regs->load_cntr2); - - /* CNTR 3 - Not used */ - if (test_dm) { - mcc_instruction = RW_MGR_LFSR_WR_RD_DM_BANK_0; - writel(RW_MGR_LFSR_WR_RD_DM_BANK_0_DQS, - &sdr_rw_load_jump_mgr_regs->load_jump_add2); - } else { - mcc_instruction = RW_MGR_LFSR_WR_RD_BANK_0; - writel(RW_MGR_LFSR_WR_RD_BANK_0_DQS, - &sdr_rw_load_jump_mgr_regs->load_jump_add2); - } - } else { - /* - * CNTR 2 - In this case we want to execute the next instruction - * and NOT take the jump. So we set the counter to 0. The jump - * address doesn't count. - */ - writel(0x0, &sdr_rw_load_mgr_regs->load_cntr2); - writel(0x0, &sdr_rw_load_jump_mgr_regs->load_jump_add2); - - /* - * CNTR 3 - Set the nop counter to the number of cycles we - * need to loop for, minus 1. - */ - writel(rw_wl_nop_cycles - 1, &sdr_rw_load_mgr_regs->load_cntr3); - if (test_dm) { - mcc_instruction = RW_MGR_LFSR_WR_RD_DM_BANK_0; - writel(RW_MGR_LFSR_WR_RD_DM_BANK_0_NOP, - &sdr_rw_load_jump_mgr_regs->load_jump_add3); - } else { - mcc_instruction = RW_MGR_LFSR_WR_RD_BANK_0; - writel(RW_MGR_LFSR_WR_RD_BANK_0_NOP, - &sdr_rw_load_jump_mgr_regs->load_jump_add3); - } - } - - writel(0, SDR_PHYGRP_RWMGRGRP_ADDRESS | - RW_MGR_RESET_READ_DATAPATH_OFFSET); - - if (quick_write_mode) - writel(0x08, &sdr_rw_load_mgr_regs->load_cntr0); - else - writel(0x40, &sdr_rw_load_mgr_regs->load_cntr0); - - writel(mcc_instruction, &sdr_rw_load_jump_mgr_regs->load_jump_add0); - - /* - * CNTR 1 - This is used to ensure enough time elapses - * for read data to come back. - */ - writel(0x30, &sdr_rw_load_mgr_regs->load_cntr1); - - if (test_dm) { - writel(RW_MGR_LFSR_WR_RD_DM_BANK_0_WAIT, - &sdr_rw_load_jump_mgr_regs->load_jump_add1); - } else { - writel(RW_MGR_LFSR_WR_RD_BANK_0_WAIT, - &sdr_rw_load_jump_mgr_regs->load_jump_add1); - } - - addr = SDR_PHYGRP_RWMGRGRP_ADDRESS | RW_MGR_RUN_SINGLE_GROUP_OFFSET; - writel(mcc_instruction, addr + (group << 2)); -} - -/* Test writes, can check for a single bit pass or multiple bit pass */ -static uint32_t rw_mgr_mem_calibrate_write_test(uint32_t rank_bgn, - uint32_t write_group, uint32_t use_dm, uint32_t all_correct, - uint32_t *bit_chk, uint32_t all_ranks) -{ - uint32_t r; - uint32_t correct_mask_vg; - uint32_t tmp_bit_chk; - uint32_t vg; - uint32_t rank_end = all_ranks ? RW_MGR_MEM_NUMBER_OF_RANKS : - (rank_bgn + NUM_RANKS_PER_SHADOW_REG); - uint32_t addr_rw_mgr; - uint32_t base_rw_mgr; - - *bit_chk = param->write_correct_mask; - correct_mask_vg = param->write_correct_mask_vg; - - for (r = rank_bgn; r < rank_end; r++) { - if (param->skip_ranks[r]) { - /* request to skip the rank */ - continue; - } - - /* set rank */ - set_rank_and_odt_mask(r, RW_MGR_ODT_MODE_READ_WRITE); - - tmp_bit_chk = 0; - addr_rw_mgr = SDR_PHYGRP_RWMGRGRP_ADDRESS; - for (vg = RW_MGR_MEM_VIRTUAL_GROUPS_PER_WRITE_DQS-1; ; vg--) { - /* reset the fifos to get pointers to known state */ - writel(0, &phy_mgr_cmd->fifo_reset); - - tmp_bit_chk = tmp_bit_chk << - (RW_MGR_MEM_DQ_PER_WRITE_DQS / - RW_MGR_MEM_VIRTUAL_GROUPS_PER_WRITE_DQS); - rw_mgr_mem_calibrate_write_test_issue(write_group * - RW_MGR_MEM_VIRTUAL_GROUPS_PER_WRITE_DQS+vg, - use_dm); - - base_rw_mgr = readl(addr_rw_mgr); - tmp_bit_chk = tmp_bit_chk | (correct_mask_vg & ~(base_rw_mgr)); - if (vg == 0) - break; - } - *bit_chk &= tmp_bit_chk; - } - - if (all_correct) { - set_rank_and_odt_mask(0, RW_MGR_ODT_MODE_OFF); - debug_cond(DLEVEL == 2, "write_test(%u,%u,ALL) : %u == \ - %u => %lu", write_group, use_dm, - *bit_chk, param->write_correct_mask, - (long unsigned int)(*bit_chk == - param->write_correct_mask)); - return *bit_chk == param->write_correct_mask; - } else { - set_rank_and_odt_mask(0, RW_MGR_ODT_MODE_OFF); - debug_cond(DLEVEL == 2, "write_test(%u,%u,ONE) : %u != ", - write_group, use_dm, *bit_chk); - debug_cond(DLEVEL == 2, "%lu" " => %lu", (long unsigned int)0, - (long unsigned int)(*bit_chk != 0)); - return *bit_chk != 0x00; - } -} - /** * search_window() - Search for the/part of the window with DM/DQS shift * @search_dm: If 1, search for the DM shift, if 0, search for DQS shift