Angel Pons | 6e5aabd | 2020-03-23 23:44:42 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2 | |
Angel Pons | 12bd8ab | 2020-11-13 23:10:52 +0100 | [diff] [blame] | 3 | #include <assert.h> |
Elyes HAOUAS | f97c1c9 | 2019-12-03 18:22:06 +0100 | [diff] [blame] | 4 | #include <commonlib/helpers.h> |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 5 | #include <console/console.h> |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 6 | #include <string.h> |
Subrata Banik | 53b08c3 | 2018-12-10 14:11:35 +0530 | [diff] [blame] | 7 | #include <arch/cpu.h> |
Kyösti Mälkki | 13f6650 | 2019-03-03 08:01:05 +0200 | [diff] [blame] | 8 | #include <device/mmio.h> |
Kyösti Mälkki | f1b58b7 | 2019-03-01 13:43:02 +0200 | [diff] [blame] | 9 | #include <device/pci_ops.h> |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 10 | #include <northbridge/intel/sandybridge/chip.h> |
| 11 | #include <device/pci_def.h> |
| 12 | #include <delay.h> |
Elyes HAOUAS | 1d6484a | 2020-07-10 11:18:11 +0200 | [diff] [blame] | 13 | #include <types.h> |
Elyes HAOUAS | 1d3b3c3 | 2019-05-04 08:12:42 +0200 | [diff] [blame] | 14 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 15 | #include "raminit_native.h" |
| 16 | #include "raminit_common.h" |
Angel Pons | 7f6586f | 2020-03-21 12:45:12 +0100 | [diff] [blame] | 17 | #include "raminit_tables.h" |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 18 | #include "sandybridge.h" |
| 19 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 20 | /* FIXME: no support for 3-channel chipsets */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 21 | |
| 22 | static void sfence(void) |
| 23 | { |
| 24 | asm volatile ("sfence"); |
| 25 | } |
| 26 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 27 | /* Toggle IO reset bit */ |
| 28 | static void toggle_io_reset(void) |
| 29 | { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 30 | u32 r32 = MCHBAR32(MC_INIT_STATE_G); |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 31 | MCHBAR32(MC_INIT_STATE_G) = r32 | (1 << 5); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 32 | udelay(1); |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 33 | MCHBAR32(MC_INIT_STATE_G) = r32 & ~(1 << 5); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 34 | udelay(1); |
| 35 | } |
| 36 | |
| 37 | static u32 get_XOVER_CLK(u8 rankmap) |
| 38 | { |
| 39 | return rankmap << 24; |
| 40 | } |
| 41 | |
| 42 | static u32 get_XOVER_CMD(u8 rankmap) |
| 43 | { |
| 44 | u32 reg; |
| 45 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 46 | /* Enable xover cmd */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 47 | reg = 0x4000; |
| 48 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 49 | /* Enable xover ctl */ |
| 50 | if (rankmap & 0x03) |
| 51 | reg |= (1 << 17); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 52 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 53 | if (rankmap & 0x0c) |
| 54 | reg |= (1 << 26); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 55 | |
| 56 | return reg; |
| 57 | } |
| 58 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 59 | void dram_find_common_params(ramctr_timing *ctrl) |
| 60 | { |
| 61 | size_t valid_dimms; |
| 62 | int channel, slot; |
| 63 | dimm_info *dimms = &ctrl->info; |
| 64 | |
| 65 | ctrl->cas_supported = (1 << (MAX_CAS - MIN_CAS + 1)) - 1; |
| 66 | valid_dimms = 0; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 67 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 68 | FOR_ALL_CHANNELS for (slot = 0; slot < 2; slot++) { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 69 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 70 | const dimm_attr *dimm = &dimms->dimm[channel][slot]; |
| 71 | if (dimm->dram_type != SPD_MEMORY_TYPE_SDRAM_DDR3) |
| 72 | continue; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 73 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 74 | valid_dimms++; |
| 75 | |
| 76 | /* Find all possible CAS combinations */ |
| 77 | ctrl->cas_supported &= dimm->cas_supported; |
| 78 | |
| 79 | /* Find the smallest common latencies supported by all DIMMs */ |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 80 | ctrl->tCK = MAX(ctrl->tCK, dimm->tCK); |
| 81 | ctrl->tAA = MAX(ctrl->tAA, dimm->tAA); |
| 82 | ctrl->tWR = MAX(ctrl->tWR, dimm->tWR); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 83 | ctrl->tRCD = MAX(ctrl->tRCD, dimm->tRCD); |
| 84 | ctrl->tRRD = MAX(ctrl->tRRD, dimm->tRRD); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 85 | ctrl->tRP = MAX(ctrl->tRP, dimm->tRP); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 86 | ctrl->tRAS = MAX(ctrl->tRAS, dimm->tRAS); |
| 87 | ctrl->tRFC = MAX(ctrl->tRFC, dimm->tRFC); |
| 88 | ctrl->tWTR = MAX(ctrl->tWTR, dimm->tWTR); |
| 89 | ctrl->tRTP = MAX(ctrl->tRTP, dimm->tRTP); |
| 90 | ctrl->tFAW = MAX(ctrl->tFAW, dimm->tFAW); |
Dan Elkouby | dabebc3 | 2018-04-13 18:47:10 +0300 | [diff] [blame] | 91 | ctrl->tCWL = MAX(ctrl->tCWL, dimm->tCWL); |
| 92 | ctrl->tCMD = MAX(ctrl->tCMD, dimm->tCMD); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 93 | } |
| 94 | |
| 95 | if (!ctrl->cas_supported) |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 96 | die("Unsupported DIMM combination. DIMMS do not support common CAS latency"); |
| 97 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 98 | if (!valid_dimms) |
| 99 | die("No valid DIMMs found"); |
| 100 | } |
| 101 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 102 | void dram_xover(ramctr_timing *ctrl) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 103 | { |
| 104 | u32 reg; |
| 105 | int channel; |
| 106 | |
| 107 | FOR_ALL_CHANNELS { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 108 | /* Enable xover clk */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 109 | reg = get_XOVER_CLK(ctrl->rankmap[channel]); |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 110 | printram("XOVER CLK [%x] = %x\n", GDCRCKPICODE_ch(channel), reg); |
| 111 | MCHBAR32(GDCRCKPICODE_ch(channel)) = reg; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 112 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 113 | /* Enable xover ctl & xover cmd */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 114 | reg = get_XOVER_CMD(ctrl->rankmap[channel]); |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 115 | printram("XOVER CMD [%x] = %x\n", GDCRCMDPICODING_ch(channel), reg); |
| 116 | MCHBAR32(GDCRCMDPICODING_ch(channel)) = reg; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 117 | } |
| 118 | } |
| 119 | |
Patrick Rudolph | 19c3dad | 2016-11-26 11:37:45 +0100 | [diff] [blame] | 120 | static void dram_odt_stretch(ramctr_timing *ctrl, int channel) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 121 | { |
Angel Pons | 89ae6b8 | 2020-03-21 13:23:32 +0100 | [diff] [blame] | 122 | u32 addr, stretch; |
Patrick Rudolph | 19c3dad | 2016-11-26 11:37:45 +0100 | [diff] [blame] | 123 | |
| 124 | stretch = ctrl->ref_card_offset[channel]; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 125 | /* |
| 126 | * ODT stretch: |
| 127 | * Delay ODT signal by stretch value. Useful for multi DIMM setups on the same channel. |
| 128 | */ |
Angel Pons | 89ae6b8 | 2020-03-21 13:23:32 +0100 | [diff] [blame] | 129 | if (IS_SANDY_CPU(ctrl->cpu) && IS_SANDY_CPU_C(ctrl->cpu)) { |
Patrick Rudolph | 19c3dad | 2016-11-26 11:37:45 +0100 | [diff] [blame] | 130 | if (stretch == 2) |
| 131 | stretch = 3; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 132 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 133 | addr = SCHED_SECOND_CBIT_ch(channel); |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 134 | MCHBAR32_AND_OR(addr, ~(0xf << 10), (stretch << 12) | (stretch << 10)); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 135 | printk(RAM_DEBUG, "OTHP Workaround [%x] = %x\n", addr, MCHBAR32(addr)); |
Patrick Rudolph | 19c3dad | 2016-11-26 11:37:45 +0100 | [diff] [blame] | 136 | } else { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 137 | addr = TC_OTHP_ch(channel); |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 138 | MCHBAR32_AND_OR(addr, ~(0xf << 16), (stretch << 16) | (stretch << 18)); |
Iru Cai | 89af71c | 2018-08-16 16:46:27 +0800 | [diff] [blame] | 139 | printk(RAM_DEBUG, "OTHP [%x] = %x\n", addr, MCHBAR32(addr)); |
Patrick Rudolph | 19c3dad | 2016-11-26 11:37:45 +0100 | [diff] [blame] | 140 | } |
| 141 | } |
| 142 | |
| 143 | void dram_timing_regs(ramctr_timing *ctrl) |
| 144 | { |
| 145 | u32 reg, addr, val32; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 146 | int channel; |
| 147 | |
| 148 | FOR_ALL_CHANNELS { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 149 | /* BIN parameters */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 150 | reg = 0; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 151 | reg |= (ctrl->tRCD << 0); |
| 152 | reg |= (ctrl->tRP << 4); |
| 153 | reg |= (ctrl->CAS << 8); |
| 154 | reg |= (ctrl->CWL << 12); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 155 | reg |= (ctrl->tRAS << 16); |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 156 | printram("DBP [%x] = %x\n", TC_DBP_ch(channel), reg); |
| 157 | MCHBAR32(TC_DBP_ch(channel)) = reg; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 158 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 159 | /* Regular access parameters */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 160 | reg = 0; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 161 | reg |= (ctrl->tRRD << 0); |
| 162 | reg |= (ctrl->tRTP << 4); |
| 163 | reg |= (ctrl->tCKE << 8); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 164 | reg |= (ctrl->tWTR << 12); |
| 165 | reg |= (ctrl->tFAW << 16); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 166 | reg |= (ctrl->tWR << 24); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 167 | reg |= (3 << 30); |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 168 | printram("RAP [%x] = %x\n", TC_RAP_ch(channel), reg); |
| 169 | MCHBAR32(TC_RAP_ch(channel)) = reg; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 170 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 171 | /* Other parameters */ |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 172 | addr = TC_OTHP_ch(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 173 | reg = 0; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 174 | reg |= (ctrl->tXPDLL << 0); |
| 175 | reg |= (ctrl->tXP << 5); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 176 | reg |= (ctrl->tAONPD << 8); |
| 177 | reg |= 0xa0000; |
| 178 | printram("OTHP [%x] = %x\n", addr, reg); |
| 179 | MCHBAR32(addr) = reg; |
| 180 | |
Angel Pons | ca2f68a | 2020-03-22 13:15:12 +0100 | [diff] [blame] | 181 | /* Debug parameters - only applies to Ivy Bridge */ |
| 182 | if (IS_IVY_CPU(ctrl->cpu)) { |
| 183 | reg = 0; |
| 184 | |
| 185 | /* |
| 186 | * If tXP and tXPDLL are very high, we need to increase them by one. |
| 187 | * This can only happen on Ivy Bridge, and when overclocking the RAM. |
| 188 | */ |
| 189 | if (ctrl->tXP >= 8) |
| 190 | reg |= (1 << 12); |
| 191 | |
| 192 | if (ctrl->tXPDLL >= 32) |
| 193 | reg |= (1 << 13); |
| 194 | |
| 195 | MCHBAR32(TC_DTP_ch(channel)) = reg; |
| 196 | } |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 197 | |
Felix Held | 9fe248f | 2018-07-31 20:59:45 +0200 | [diff] [blame] | 198 | MCHBAR32_OR(addr, 0x00020000); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 199 | |
Patrick Rudolph | 19c3dad | 2016-11-26 11:37:45 +0100 | [diff] [blame] | 200 | dram_odt_stretch(ctrl, channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 201 | |
Patrick Rudolph | 5ee9bc1 | 2017-10-31 10:49:52 +0100 | [diff] [blame] | 202 | /* |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 203 | * TC-Refresh timing parameters: |
| 204 | * The tREFIx9 field should be programmed to minimum of 8.9 * tREFI (to allow |
| 205 | * for possible delays from ZQ or isoc) and tRASmax (70us) divided by 1024. |
Patrick Rudolph | 5ee9bc1 | 2017-10-31 10:49:52 +0100 | [diff] [blame] | 206 | */ |
| 207 | val32 = MIN((ctrl->tREFI * 89) / 10, (70000 << 8) / ctrl->tCK); |
| 208 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 209 | reg = ((ctrl->tREFI & 0xffff) << 0) | |
| 210 | ((ctrl->tRFC & 0x01ff) << 16) | (((val32 / 1024) & 0x7f) << 25); |
| 211 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 212 | printram("REFI [%x] = %x\n", TC_RFTP_ch(channel), reg); |
| 213 | MCHBAR32(TC_RFTP_ch(channel)) = reg; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 214 | |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 215 | MCHBAR32_OR(TC_RFP_ch(channel), 0xff); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 216 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 217 | /* Self-refresh timing parameters */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 218 | reg = 0; |
| 219 | val32 = tDLLK; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 220 | reg = (reg & ~0x00000fff) | (val32 << 0); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 221 | val32 = ctrl->tXSOffset; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 222 | reg = (reg & ~0x0000f000) | (val32 << 12); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 223 | val32 = tDLLK - ctrl->tXSOffset; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 224 | reg = (reg & ~0x03ff0000) | (val32 << 16); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 225 | val32 = ctrl->tMOD - 8; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 226 | reg = (reg & ~0xf0000000) | (val32 << 28); |
| 227 | printram("SRFTP [%x] = %x\n", TC_SRFTP_ch(channel), reg); |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 228 | MCHBAR32(TC_SRFTP_ch(channel)) = reg; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 229 | } |
| 230 | } |
| 231 | |
| 232 | void dram_dimm_mapping(ramctr_timing *ctrl) |
| 233 | { |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 234 | int channel; |
| 235 | dimm_info *info = &ctrl->info; |
| 236 | |
| 237 | FOR_ALL_CHANNELS { |
Nico Huber | ac4f216 | 2017-10-01 18:14:43 +0200 | [diff] [blame] | 238 | dimm_attr *dimmA, *dimmB; |
| 239 | u32 reg = 0; |
| 240 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 241 | if (info->dimm[channel][0].size_mb >= info->dimm[channel][1].size_mb) { |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 242 | dimmA = &info->dimm[channel][0]; |
| 243 | dimmB = &info->dimm[channel][1]; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 244 | reg |= (0 << 16); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 245 | } else { |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 246 | dimmA = &info->dimm[channel][1]; |
| 247 | dimmB = &info->dimm[channel][0]; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 248 | reg |= (1 << 16); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 249 | } |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 250 | |
Nico Huber | ac4f216 | 2017-10-01 18:14:43 +0200 | [diff] [blame] | 251 | if (dimmA && (dimmA->ranks > 0)) { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 252 | reg |= (dimmA->size_mb / 256) << 0; |
| 253 | reg |= (dimmA->ranks - 1) << 17; |
Nico Huber | ac4f216 | 2017-10-01 18:14:43 +0200 | [diff] [blame] | 254 | reg |= (dimmA->width / 8 - 1) << 19; |
| 255 | } |
| 256 | |
| 257 | if (dimmB && (dimmB->ranks > 0)) { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 258 | reg |= (dimmB->size_mb / 256) << 8; |
| 259 | reg |= (dimmB->ranks - 1) << 18; |
Nico Huber | ac4f216 | 2017-10-01 18:14:43 +0200 | [diff] [blame] | 260 | reg |= (dimmB->width / 8 - 1) << 20; |
| 261 | } |
| 262 | |
Patrick Rudolph | 4e0cd82 | 2020-05-01 18:35:36 +0200 | [diff] [blame] | 263 | /* |
| 264 | * Rank interleave: Bit 16 of the physical address space sets |
| 265 | * the rank to use in a dual single rank DIMM configuration. |
| 266 | * That results in every 64KiB being interleaved between two ranks. |
| 267 | */ |
| 268 | reg |= 1 << 21; |
| 269 | /* Enhanced interleave */ |
| 270 | reg |= 1 << 22; |
Nico Huber | ac4f216 | 2017-10-01 18:14:43 +0200 | [diff] [blame] | 271 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 272 | if ((dimmA && (dimmA->ranks > 0)) || (dimmB && (dimmB->ranks > 0))) { |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 273 | ctrl->mad_dimm[channel] = reg; |
| 274 | } else { |
| 275 | ctrl->mad_dimm[channel] = 0; |
| 276 | } |
| 277 | } |
| 278 | } |
| 279 | |
Patrick Rudolph | dd66287 | 2017-10-28 18:20:11 +0200 | [diff] [blame] | 280 | void dram_dimm_set_mapping(ramctr_timing *ctrl, int training) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 281 | { |
| 282 | int channel; |
Patrick Rudolph | dd66287 | 2017-10-28 18:20:11 +0200 | [diff] [blame] | 283 | u32 ecc; |
| 284 | |
| 285 | if (ctrl->ecc_enabled) |
| 286 | ecc = training ? (1 << 24) : (3 << 24); |
| 287 | else |
| 288 | ecc = 0; |
| 289 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 290 | FOR_ALL_CHANNELS { |
Patrick Rudolph | dd66287 | 2017-10-28 18:20:11 +0200 | [diff] [blame] | 291 | MCHBAR32(MAD_DIMM(channel)) = ctrl->mad_dimm[channel] | ecc; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 292 | } |
Patrick Rudolph | dd66287 | 2017-10-28 18:20:11 +0200 | [diff] [blame] | 293 | |
Patrick Rudolph | b5fa9c8 | 2020-05-01 18:35:05 +0200 | [diff] [blame] | 294 | if (ctrl->ecc_enabled) |
| 295 | udelay(10); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 296 | } |
| 297 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 298 | void dram_zones(ramctr_timing *ctrl, int training) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 299 | { |
| 300 | u32 reg, ch0size, ch1size; |
| 301 | u8 val; |
| 302 | reg = 0; |
| 303 | val = 0; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 304 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 305 | if (training) { |
| 306 | ch0size = ctrl->channel_size_mb[0] ? 256 : 0; |
| 307 | ch1size = ctrl->channel_size_mb[1] ? 256 : 0; |
| 308 | } else { |
| 309 | ch0size = ctrl->channel_size_mb[0]; |
| 310 | ch1size = ctrl->channel_size_mb[1]; |
| 311 | } |
| 312 | |
| 313 | if (ch0size >= ch1size) { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 314 | reg = MCHBAR32(MAD_ZR); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 315 | val = ch1size / 256; |
| 316 | reg = (reg & ~0xff000000) | val << 24; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 317 | reg = (reg & ~0x00ff0000) | (2 * val) << 16; |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 318 | MCHBAR32(MAD_ZR) = reg; |
Felix Held | dee167e | 2019-12-30 17:30:16 +0100 | [diff] [blame] | 319 | MCHBAR32(MAD_CHNL) = 0x24; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 320 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 321 | } else { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 322 | reg = MCHBAR32(MAD_ZR); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 323 | val = ch0size / 256; |
| 324 | reg = (reg & ~0xff000000) | val << 24; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 325 | reg = (reg & ~0x00ff0000) | (2 * val) << 16; |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 326 | MCHBAR32(MAD_ZR) = reg; |
Felix Held | dee167e | 2019-12-30 17:30:16 +0100 | [diff] [blame] | 327 | MCHBAR32(MAD_CHNL) = 0x21; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 328 | } |
| 329 | } |
| 330 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 331 | #define DEFAULT_PCI_MMIO_SIZE 2048 |
| 332 | |
| 333 | static unsigned int get_mmio_size(void) |
| 334 | { |
| 335 | const struct device *dev; |
| 336 | const struct northbridge_intel_sandybridge_config *cfg = NULL; |
| 337 | |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 338 | dev = pcidev_path_on_root(PCI_DEVFN(0, 0)); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 339 | if (dev) |
| 340 | cfg = dev->chip_info; |
| 341 | |
| 342 | /* If this is zero, it just means devicetree.cb didn't set it */ |
| 343 | if (!cfg || cfg->pci_mmio_size == 0) |
| 344 | return DEFAULT_PCI_MMIO_SIZE; |
| 345 | else |
| 346 | return cfg->pci_mmio_size; |
| 347 | } |
| 348 | |
Patrick Rudolph | 05d4bf7e | 2017-10-28 16:36:09 +0200 | [diff] [blame] | 349 | /* |
| 350 | * Returns the ECC mode the NB is running at. It takes precedence over ECC capability. |
| 351 | * The ME/PCU/.. has the ability to change this. |
| 352 | * Return 0: ECC is optional |
| 353 | * Return 1: ECC is forced |
| 354 | */ |
| 355 | bool get_host_ecc_forced(void) |
| 356 | { |
| 357 | /* read Capabilities A Register */ |
| 358 | const u32 reg32 = pci_read_config32(HOST_BRIDGE, CAPID0_A); |
| 359 | return !!(reg32 & (1 << 24)); |
| 360 | } |
| 361 | |
| 362 | /* |
| 363 | * Returns the ECC capability. |
| 364 | * The ME/PCU/.. has the ability to change this. |
| 365 | * Return 0: ECC is disabled |
| 366 | * Return 1: ECC is possible |
| 367 | */ |
| 368 | bool get_host_ecc_cap(void) |
| 369 | { |
| 370 | /* read Capabilities A Register */ |
| 371 | const u32 reg32 = pci_read_config32(HOST_BRIDGE, CAPID0_A); |
| 372 | return !(reg32 & (1 << 25)); |
| 373 | } |
| 374 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 375 | void dram_memorymap(ramctr_timing *ctrl, int me_uma_size) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 376 | { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 377 | u32 reg, val, reclaim, tom, gfxstolen, gttsize; |
| 378 | size_t tsegbase, toludbase, remapbase, gfxstolenbase, mmiosize, gttbase; |
| 379 | size_t tsegsize, touudbase, remaplimit, mestolenbase, tsegbasedelta; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 380 | uint16_t ggc; |
| 381 | |
| 382 | mmiosize = get_mmio_size(); |
| 383 | |
Felix Held | 87ddea2 | 2020-01-26 04:55:27 +0100 | [diff] [blame] | 384 | ggc = pci_read_config16(HOST_BRIDGE, GGC); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 385 | if (!(ggc & 2)) { |
| 386 | gfxstolen = ((ggc >> 3) & 0x1f) * 32; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 387 | gttsize = ((ggc >> 8) & 0x3); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 388 | } else { |
| 389 | gfxstolen = 0; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 390 | gttsize = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 391 | } |
| 392 | |
| 393 | tsegsize = CONFIG_SMM_TSEG_SIZE >> 20; |
| 394 | |
| 395 | tom = ctrl->channel_size_mb[0] + ctrl->channel_size_mb[1]; |
| 396 | |
| 397 | mestolenbase = tom - me_uma_size; |
| 398 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 399 | toludbase = MIN(4096 - mmiosize + gfxstolen + gttsize + tsegsize, tom - me_uma_size); |
| 400 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 401 | gfxstolenbase = toludbase - gfxstolen; |
| 402 | gttbase = gfxstolenbase - gttsize; |
| 403 | |
| 404 | tsegbase = gttbase - tsegsize; |
| 405 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 406 | /* Round tsegbase down to nearest address aligned to tsegsize */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 407 | tsegbasedelta = tsegbase & (tsegsize - 1); |
| 408 | tsegbase &= ~(tsegsize - 1); |
| 409 | |
| 410 | gttbase -= tsegbasedelta; |
| 411 | gfxstolenbase -= tsegbasedelta; |
| 412 | toludbase -= tsegbasedelta; |
| 413 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 414 | /* Test if it is possible to reclaim a hole in the RAM addressing */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 415 | if (tom - me_uma_size > toludbase) { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 416 | /* Reclaim is possible */ |
| 417 | reclaim = 1; |
| 418 | remapbase = MAX(4096, tom - me_uma_size); |
| 419 | remaplimit = remapbase + MIN(4096, tom - me_uma_size) - toludbase - 1; |
| 420 | touudbase = remaplimit + 1; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 421 | } else { |
| 422 | // Reclaim not possible |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 423 | reclaim = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 424 | touudbase = tom - me_uma_size; |
| 425 | } |
| 426 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 427 | /* Update memory map in PCIe configuration space */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 428 | printk(BIOS_DEBUG, "Update PCI-E configuration space:\n"); |
| 429 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 430 | /* TOM (top of memory) */ |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 431 | reg = pci_read_config32(HOST_BRIDGE, TOM); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 432 | val = tom & 0xfff; |
| 433 | reg = (reg & ~0xfff00000) | (val << 20); |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 434 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", TOM, reg); |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 435 | pci_write_config32(HOST_BRIDGE, TOM, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 436 | |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 437 | reg = pci_read_config32(HOST_BRIDGE, TOM + 4); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 438 | val = tom & 0xfffff000; |
| 439 | reg = (reg & ~0x000fffff) | (val >> 12); |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 440 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", TOM + 4, reg); |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 441 | pci_write_config32(HOST_BRIDGE, TOM + 4, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 442 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 443 | /* TOLUD (Top Of Low Usable DRAM) */ |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 444 | reg = pci_read_config32(HOST_BRIDGE, TOLUD); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 445 | val = toludbase & 0xfff; |
| 446 | reg = (reg & ~0xfff00000) | (val << 20); |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 447 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", TOLUD, reg); |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 448 | pci_write_config32(HOST_BRIDGE, TOLUD, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 449 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 450 | /* TOUUD LSB (Top Of Upper Usable DRAM) */ |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 451 | reg = pci_read_config32(HOST_BRIDGE, TOUUD); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 452 | val = touudbase & 0xfff; |
| 453 | reg = (reg & ~0xfff00000) | (val << 20); |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 454 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", TOUUD, reg); |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 455 | pci_write_config32(HOST_BRIDGE, TOUUD, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 456 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 457 | /* TOUUD MSB */ |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 458 | reg = pci_read_config32(HOST_BRIDGE, TOUUD + 4); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 459 | val = touudbase & 0xfffff000; |
| 460 | reg = (reg & ~0x000fffff) | (val >> 12); |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 461 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", TOUUD + 4, reg); |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 462 | pci_write_config32(HOST_BRIDGE, TOUUD + 4, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 463 | |
| 464 | if (reclaim) { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 465 | /* REMAP BASE */ |
| 466 | pci_write_config32(HOST_BRIDGE, REMAPBASE, remapbase << 20); |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 467 | pci_write_config32(HOST_BRIDGE, REMAPBASE + 4, remapbase >> 12); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 468 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 469 | /* REMAP LIMIT */ |
| 470 | pci_write_config32(HOST_BRIDGE, REMAPLIMIT, remaplimit << 20); |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 471 | pci_write_config32(HOST_BRIDGE, REMAPLIMIT + 4, remaplimit >> 12); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 472 | } |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 473 | /* TSEG */ |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 474 | reg = pci_read_config32(HOST_BRIDGE, TSEGMB); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 475 | val = tsegbase & 0xfff; |
| 476 | reg = (reg & ~0xfff00000) | (val << 20); |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 477 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", TSEGMB, reg); |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 478 | pci_write_config32(HOST_BRIDGE, TSEGMB, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 479 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 480 | /* GFX stolen memory */ |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 481 | reg = pci_read_config32(HOST_BRIDGE, BDSM); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 482 | val = gfxstolenbase & 0xfff; |
| 483 | reg = (reg & ~0xfff00000) | (val << 20); |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 484 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", BDSM, reg); |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 485 | pci_write_config32(HOST_BRIDGE, BDSM, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 486 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 487 | /* GTT stolen memory */ |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 488 | reg = pci_read_config32(HOST_BRIDGE, BGSM); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 489 | val = gttbase & 0xfff; |
| 490 | reg = (reg & ~0xfff00000) | (val << 20); |
Felix Held | 4902fee | 2019-12-28 18:09:47 +0100 | [diff] [blame] | 491 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", BGSM, reg); |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 492 | pci_write_config32(HOST_BRIDGE, BGSM, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 493 | |
| 494 | if (me_uma_size) { |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 495 | reg = pci_read_config32(HOST_BRIDGE, MESEG_MASK + 4); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 496 | val = (0x80000 - me_uma_size) & 0xfffff000; |
| 497 | reg = (reg & ~0x000fffff) | (val >> 12); |
Felix Held | 651f99f | 2019-12-30 16:28:48 +0100 | [diff] [blame] | 498 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", MESEG_MASK + 4, reg); |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 499 | pci_write_config32(HOST_BRIDGE, MESEG_MASK + 4, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 500 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 501 | /* ME base */ |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 502 | reg = pci_read_config32(HOST_BRIDGE, MESEG_BASE); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 503 | val = mestolenbase & 0xfff; |
| 504 | reg = (reg & ~0xfff00000) | (val << 20); |
Felix Held | 651f99f | 2019-12-30 16:28:48 +0100 | [diff] [blame] | 505 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", MESEG_BASE, reg); |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 506 | pci_write_config32(HOST_BRIDGE, MESEG_BASE, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 507 | |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 508 | reg = pci_read_config32(HOST_BRIDGE, MESEG_BASE + 4); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 509 | val = mestolenbase & 0xfffff000; |
| 510 | reg = (reg & ~0x000fffff) | (val >> 12); |
Felix Held | 651f99f | 2019-12-30 16:28:48 +0100 | [diff] [blame] | 511 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", MESEG_BASE + 4, reg); |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 512 | pci_write_config32(HOST_BRIDGE, MESEG_BASE + 4, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 513 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 514 | /* ME mask */ |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 515 | reg = pci_read_config32(HOST_BRIDGE, MESEG_MASK); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 516 | val = (0x80000 - me_uma_size) & 0xfff; |
| 517 | reg = (reg & ~0xfff00000) | (val << 20); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 518 | reg = reg | ME_STLEN_EN; /* Set ME memory enable */ |
| 519 | reg = reg | MELCK; /* Set lock bit on ME mem */ |
Felix Held | 651f99f | 2019-12-30 16:28:48 +0100 | [diff] [blame] | 520 | printk(BIOS_DEBUG, "PCI(0, 0, 0)[%x] = %x\n", MESEG_MASK, reg); |
Angel Pons | b31d1d7 | 2020-01-10 01:35:09 +0100 | [diff] [blame] | 521 | pci_write_config32(HOST_BRIDGE, MESEG_MASK, reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 522 | } |
| 523 | } |
| 524 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 525 | static void write_reset(ramctr_timing *ctrl) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 526 | { |
| 527 | int channel, slotrank; |
| 528 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 529 | /* Choose a populated channel */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 530 | channel = (ctrl->rankmap[0]) ? 0 : 1; |
| 531 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 532 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 533 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 534 | /* Choose a populated rank */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 535 | slotrank = (ctrl->rankmap[channel] & 1) ? 0 : 2; |
| 536 | |
Angel Pons | ffd5015 | 2020-11-12 11:03:10 +0100 | [diff] [blame] | 537 | iosav_write_zqcs_sequence(channel, slotrank, 3, 8, 0); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 538 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 539 | /* |
| 540 | * Execute command queue - why is bit 22 set here?! |
| 541 | * |
| 542 | * This is actually using the IOSAV state machine as a timer, so refresh is allowed. |
| 543 | */ |
Angel Pons | 38d901e | 2020-05-02 23:50:43 +0200 | [diff] [blame] | 544 | iosav_run_queue(channel, 1, 1); |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 545 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 546 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 547 | } |
| 548 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 549 | void dram_jedecreset(ramctr_timing *ctrl) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 550 | { |
Felix Held | 9fe248f | 2018-07-31 20:59:45 +0200 | [diff] [blame] | 551 | u32 reg; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 552 | int channel; |
| 553 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 554 | while (!(MCHBAR32(RCOMP_TIMER) & (1 << 16))) |
| 555 | ; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 556 | do { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 557 | reg = MCHBAR32(IOSAV_STATUS_ch(0)); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 558 | } while ((reg & 0x14) == 0); |
| 559 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 560 | /* Set state of memory controller */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 561 | reg = 0x112; |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 562 | MCHBAR32(MC_INIT_STATE_G) = reg; |
| 563 | MCHBAR32(MC_INIT_STATE) = 0; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 564 | reg |= 2; /* DDR reset */ |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 565 | MCHBAR32(MC_INIT_STATE_G) = reg; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 566 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 567 | /* Assert DIMM reset signal */ |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 568 | MCHBAR32_AND(MC_INIT_STATE_G, ~(1 << 1)); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 569 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 570 | /* Wait 200us */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 571 | udelay(200); |
| 572 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 573 | /* Deassert DIMM reset signal */ |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 574 | MCHBAR32_OR(MC_INIT_STATE_G, 1 << 1); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 575 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 576 | /* Wait 500us */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 577 | udelay(500); |
| 578 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 579 | /* Enable DCLK */ |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 580 | MCHBAR32_OR(MC_INIT_STATE_G, 1 << 2); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 581 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 582 | /* XXX Wait 20ns */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 583 | udelay(1); |
| 584 | |
| 585 | FOR_ALL_CHANNELS { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 586 | /* Set valid rank CKE */ |
Felix Held | 9fe248f | 2018-07-31 20:59:45 +0200 | [diff] [blame] | 587 | reg = ctrl->rankmap[channel]; |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 588 | MCHBAR32(MC_INIT_STATE_ch(channel)) = reg; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 589 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 590 | /* Wait 10ns for ranks to settle */ |
| 591 | // udelay(0.01); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 592 | |
| 593 | reg = (reg & ~0xf0) | (ctrl->rankmap[channel] << 4); |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 594 | MCHBAR32(MC_INIT_STATE_ch(channel)) = reg; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 595 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 596 | /* Write reset using a NOP */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 597 | write_reset(ctrl); |
| 598 | } |
| 599 | } |
| 600 | |
Angel Pons | 3d3bf48 | 2020-11-14 16:18:15 +0100 | [diff] [blame] | 601 | /* |
| 602 | * DDR3 Rank1 Address mirror swap the following pins: |
| 603 | * A3<->A4, A5<->A6, A7<->A8, BA0<->BA1 |
| 604 | */ |
| 605 | static void ddr3_mirror_mrreg(int *bank, u32 *addr) |
| 606 | { |
| 607 | *bank = ((*bank >> 1) & 1) | ((*bank << 1) & 2); |
| 608 | *addr = (*addr & ~0x1f8) | ((*addr >> 1) & 0xa8) | ((*addr & 0xa8) << 1); |
| 609 | } |
| 610 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 611 | static void write_mrreg(ramctr_timing *ctrl, int channel, int slotrank, int reg, u32 val) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 612 | { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 613 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 614 | |
Angel Pons | 3d3bf48 | 2020-11-14 16:18:15 +0100 | [diff] [blame] | 615 | if (ctrl->rank_mirror[channel][slotrank]) |
| 616 | ddr3_mirror_mrreg(®, &val); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 617 | |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 618 | const struct iosav_ssq sequence[] = { |
| 619 | /* DRAM command MRS */ |
| 620 | [0] = { |
Angel Pons | 3abd206 | 2020-05-03 00:25:02 +0200 | [diff] [blame] | 621 | .sp_cmd_ctrl = { |
| 622 | .command = IOSAV_MRS, |
| 623 | }, |
| 624 | .subseq_ctrl = { |
| 625 | .cmd_executions = 1, |
| 626 | .cmd_delay_gap = 4, |
| 627 | .post_ssq_wait = 4, |
| 628 | .data_direction = SSQ_NA, |
| 629 | }, |
| 630 | .sp_cmd_addr = { |
| 631 | .address = val, |
| 632 | .rowbits = 6, |
| 633 | .bank = reg, |
| 634 | .rank = slotrank, |
| 635 | }, |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 636 | }, |
| 637 | /* DRAM command MRS */ |
| 638 | [1] = { |
Angel Pons | 3abd206 | 2020-05-03 00:25:02 +0200 | [diff] [blame] | 639 | .sp_cmd_ctrl = { |
| 640 | .command = IOSAV_MRS, |
| 641 | .ranksel_ap = 1, |
| 642 | }, |
| 643 | .subseq_ctrl = { |
| 644 | .cmd_executions = 1, |
| 645 | .cmd_delay_gap = 4, |
| 646 | .post_ssq_wait = 4, |
| 647 | .data_direction = SSQ_NA, |
| 648 | }, |
| 649 | .sp_cmd_addr = { |
| 650 | .address = val, |
| 651 | .rowbits = 6, |
| 652 | .bank = reg, |
| 653 | .rank = slotrank, |
| 654 | }, |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 655 | }, |
| 656 | /* DRAM command MRS */ |
| 657 | [2] = { |
Angel Pons | 3abd206 | 2020-05-03 00:25:02 +0200 | [diff] [blame] | 658 | .sp_cmd_ctrl = { |
Angel Pons | fd9a8b6 | 2020-11-13 13:56:30 +0100 | [diff] [blame] | 659 | .command = IOSAV_MRS, |
Angel Pons | 3abd206 | 2020-05-03 00:25:02 +0200 | [diff] [blame] | 660 | }, |
| 661 | .subseq_ctrl = { |
| 662 | .cmd_executions = 1, |
| 663 | .cmd_delay_gap = 4, |
| 664 | .post_ssq_wait = ctrl->tMOD, |
| 665 | .data_direction = SSQ_NA, |
| 666 | }, |
| 667 | .sp_cmd_addr = { |
| 668 | .address = val, |
| 669 | .rowbits = 6, |
| 670 | .bank = reg, |
| 671 | .rank = slotrank, |
| 672 | }, |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 673 | }, |
| 674 | }; |
| 675 | iosav_write_sequence(channel, sequence, ARRAY_SIZE(sequence)); |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 676 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 677 | /* Execute command queue */ |
Angel Pons | 38d901e | 2020-05-02 23:50:43 +0200 | [diff] [blame] | 678 | iosav_run_once(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 679 | } |
| 680 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 681 | static u32 make_mr0(ramctr_timing *ctrl, u8 rank) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 682 | { |
| 683 | u16 mr0reg, mch_cas, mch_wr; |
| 684 | static const u8 mch_wr_t[12] = { 1, 2, 3, 4, 0, 5, 0, 6, 0, 7, 0, 0 }; |
Patrick Rudolph | 74203de | 2017-11-20 11:57:01 +0100 | [diff] [blame] | 685 | const size_t is_mobile = get_platform_type() == PLATFORM_MOBILE; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 686 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 687 | /* Convert CAS to MCH register friendly */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 688 | if (ctrl->CAS < 12) { |
| 689 | mch_cas = (u16) ((ctrl->CAS - 4) << 1); |
| 690 | } else { |
| 691 | mch_cas = (u16) (ctrl->CAS - 12); |
| 692 | mch_cas = ((mch_cas << 1) | 0x1); |
| 693 | } |
| 694 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 695 | /* Convert tWR to MCH register friendly */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 696 | mch_wr = mch_wr_t[ctrl->tWR - 5]; |
| 697 | |
Angel Pons | 2bf28ed | 2020-11-12 13:49:59 +0100 | [diff] [blame] | 698 | /* DLL Reset - self clearing - set after CLK frequency has been changed */ |
| 699 | mr0reg = 1 << 8; |
| 700 | |
| 701 | mr0reg |= (mch_cas & 0x1) << 2; |
| 702 | mr0reg |= (mch_cas & 0xe) << 3; |
| 703 | mr0reg |= mch_wr << 9; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 704 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 705 | /* Precharge PD - Fast (desktop) 1 or slow (mobile) 0 - mostly power-saving feature */ |
Angel Pons | 2bf28ed | 2020-11-12 13:49:59 +0100 | [diff] [blame] | 706 | mr0reg |= !is_mobile << 12; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 707 | return mr0reg; |
| 708 | } |
| 709 | |
| 710 | static void dram_mr0(ramctr_timing *ctrl, u8 rank, int channel) |
| 711 | { |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 712 | write_mrreg(ctrl, channel, rank, 0, make_mr0(ctrl, rank)); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 713 | } |
| 714 | |
Angel Pons | f999748 | 2020-11-12 16:02:52 +0100 | [diff] [blame] | 715 | static odtmap get_ODT(ramctr_timing *ctrl, int channel) |
Angel Pons | 1a9b5aa | 2020-11-12 13:51:46 +0100 | [diff] [blame] | 716 | { |
| 717 | /* Get ODT based on rankmap */ |
| 718 | int dimms_per_ch = (ctrl->rankmap[channel] & 1) + ((ctrl->rankmap[channel] >> 2) & 1); |
| 719 | |
| 720 | if (dimms_per_ch == 1) { |
| 721 | return (const odtmap){60, 60}; |
| 722 | } else { |
| 723 | return (const odtmap){120, 30}; |
| 724 | } |
| 725 | } |
| 726 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 727 | static u32 encode_odt(u32 odt) |
| 728 | { |
| 729 | switch (odt) { |
| 730 | case 30: |
| 731 | return (1 << 9) | (1 << 2); // RZQ/8, RZQ/4 |
| 732 | case 60: |
| 733 | return (1 << 2); // RZQ/4 |
| 734 | case 120: |
| 735 | return (1 << 6); // RZQ/2 |
| 736 | default: |
| 737 | case 0: |
| 738 | return 0; |
| 739 | } |
| 740 | } |
| 741 | |
| 742 | static u32 make_mr1(ramctr_timing *ctrl, u8 rank, int channel) |
| 743 | { |
| 744 | odtmap odt; |
| 745 | u32 mr1reg; |
| 746 | |
Angel Pons | f999748 | 2020-11-12 16:02:52 +0100 | [diff] [blame] | 747 | odt = get_ODT(ctrl, channel); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 748 | mr1reg = 2; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 749 | |
| 750 | mr1reg |= encode_odt(odt.rttnom); |
| 751 | |
| 752 | return mr1reg; |
| 753 | } |
| 754 | |
| 755 | static void dram_mr1(ramctr_timing *ctrl, u8 rank, int channel) |
| 756 | { |
| 757 | u16 mr1reg; |
| 758 | |
| 759 | mr1reg = make_mr1(ctrl, rank, channel); |
| 760 | |
| 761 | write_mrreg(ctrl, channel, rank, 1, mr1reg); |
| 762 | } |
| 763 | |
| 764 | static void dram_mr2(ramctr_timing *ctrl, u8 rank, int channel) |
| 765 | { |
Angel Pons | 868bca2 | 2020-11-13 13:38:04 +0100 | [diff] [blame] | 766 | const u16 pasr = 0; |
| 767 | const u16 cwl = ctrl->CWL - 5; |
| 768 | const odtmap odt = get_ODT(ctrl, channel); |
| 769 | |
Angel Pons | dca3cb5 | 2020-11-13 13:42:07 +0100 | [diff] [blame] | 770 | int srt = 0; |
Angel Pons | dca3cb5 | 2020-11-13 13:42:07 +0100 | [diff] [blame] | 771 | if (IS_IVY_CPU(ctrl->cpu) && ctrl->tCK >= TCK_1066MHZ) |
| 772 | srt = ctrl->extended_temperature_range && !ctrl->auto_self_refresh; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 773 | |
Angel Pons | 868bca2 | 2020-11-13 13:38:04 +0100 | [diff] [blame] | 774 | u16 mr2reg = 0; |
| 775 | mr2reg |= pasr; |
| 776 | mr2reg |= cwl << 3; |
| 777 | mr2reg |= ctrl->auto_self_refresh << 6; |
| 778 | mr2reg |= srt << 7; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 779 | mr2reg |= (odt.rttwr / 60) << 9; |
| 780 | |
| 781 | write_mrreg(ctrl, channel, rank, 2, mr2reg); |
Angel Pons | 7f1363d | 2020-11-13 13:31:58 +0100 | [diff] [blame] | 782 | |
| 783 | /* Program MR2 shadow */ |
| 784 | u32 reg32 = MCHBAR32(TC_MR2_SHADOW_ch(channel)); |
| 785 | |
| 786 | reg32 &= 3 << 14 | 3 << 6; |
| 787 | |
| 788 | reg32 |= mr2reg & ~(3 << 6); |
| 789 | |
| 790 | if (rank & 1) { |
| 791 | if (srt) |
| 792 | reg32 |= 1 << (rank / 2 + 6); |
| 793 | } else { |
| 794 | if (ctrl->rank_mirror[channel][rank]) |
| 795 | reg32 |= 1 << (rank / 2 + 14); |
| 796 | } |
| 797 | MCHBAR32(TC_MR2_SHADOW_ch(channel)) = reg32; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 798 | } |
| 799 | |
| 800 | static void dram_mr3(ramctr_timing *ctrl, u8 rank, int channel) |
| 801 | { |
| 802 | write_mrreg(ctrl, channel, rank, 3, 0); |
| 803 | } |
| 804 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 805 | void dram_mrscommands(ramctr_timing *ctrl) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 806 | { |
| 807 | u8 slotrank; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 808 | int channel; |
| 809 | |
| 810 | FOR_ALL_POPULATED_CHANNELS { |
| 811 | FOR_ALL_POPULATED_RANKS { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 812 | /* MR2 */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 813 | dram_mr2(ctrl, slotrank, channel); |
| 814 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 815 | /* MR3 */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 816 | dram_mr3(ctrl, slotrank, channel); |
| 817 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 818 | /* MR1 */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 819 | dram_mr1(ctrl, slotrank, channel); |
| 820 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 821 | /* MR0 */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 822 | dram_mr0(ctrl, slotrank, channel); |
| 823 | } |
| 824 | } |
| 825 | |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 826 | const struct iosav_ssq zqcl_sequence[] = { |
| 827 | /* DRAM command NOP (without ODT nor chip selects) */ |
| 828 | [0] = { |
Angel Pons | 3abd206 | 2020-05-03 00:25:02 +0200 | [diff] [blame] | 829 | .sp_cmd_ctrl = { |
Angel Pons | fd9a8b6 | 2020-11-13 13:56:30 +0100 | [diff] [blame] | 830 | .command = IOSAV_NOP & ~(0xff << 8), |
Angel Pons | 3abd206 | 2020-05-03 00:25:02 +0200 | [diff] [blame] | 831 | }, |
| 832 | .subseq_ctrl = { |
| 833 | .cmd_executions = 1, |
| 834 | .cmd_delay_gap = 4, |
| 835 | .post_ssq_wait = 15, |
| 836 | .data_direction = SSQ_NA, |
| 837 | }, |
| 838 | .sp_cmd_addr = { |
| 839 | .address = 2, |
| 840 | .rowbits = 6, |
| 841 | .bank = 0, |
| 842 | .rank = 0, |
| 843 | }, |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 844 | }, |
| 845 | /* DRAM command ZQCL */ |
| 846 | [1] = { |
Angel Pons | 3abd206 | 2020-05-03 00:25:02 +0200 | [diff] [blame] | 847 | .sp_cmd_ctrl = { |
| 848 | .command = IOSAV_ZQCS, |
| 849 | .ranksel_ap = 1, |
| 850 | }, |
| 851 | .subseq_ctrl = { |
| 852 | .cmd_executions = 1, |
| 853 | .cmd_delay_gap = 4, |
| 854 | .post_ssq_wait = 400, |
| 855 | .data_direction = SSQ_NA, |
| 856 | }, |
| 857 | .sp_cmd_addr = { |
| 858 | .address = 1024, |
| 859 | .rowbits = 6, |
| 860 | .bank = 0, |
| 861 | .rank = 0, |
| 862 | }, |
| 863 | .addr_update = { |
Angel Pons | fd9a8b6 | 2020-11-13 13:56:30 +0100 | [diff] [blame] | 864 | .inc_rank = 1, |
| 865 | .addr_wrap = 20, |
Angel Pons | 3abd206 | 2020-05-03 00:25:02 +0200 | [diff] [blame] | 866 | }, |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 867 | }, |
| 868 | }; |
| 869 | iosav_write_sequence(BROADCAST_CH, zqcl_sequence, ARRAY_SIZE(zqcl_sequence)); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 870 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 871 | /* Execute command queue on all channels. Do it four times. */ |
Angel Pons | 38d901e | 2020-05-02 23:50:43 +0200 | [diff] [blame] | 872 | iosav_run_queue(BROADCAST_CH, 4, 0); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 873 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 874 | FOR_ALL_CHANNELS { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 875 | /* Wait for ref drained */ |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 876 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 877 | } |
| 878 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 879 | /* Refresh enable */ |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 880 | MCHBAR32_OR(MC_INIT_STATE_G, 1 << 3); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 881 | |
| 882 | FOR_ALL_POPULATED_CHANNELS { |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 883 | MCHBAR32_AND(SCHED_CBIT_ch(channel), ~(1 << 21)); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 884 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 885 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 886 | |
| 887 | slotrank = (ctrl->rankmap[channel] & 1) ? 0 : 2; |
| 888 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 889 | /* Drain */ |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 890 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 891 | |
Angel Pons | ffd5015 | 2020-11-12 11:03:10 +0100 | [diff] [blame] | 892 | iosav_write_zqcs_sequence(channel, slotrank, 4, 101, 31); |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 893 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 894 | /* Execute command queue */ |
Angel Pons | 38d901e | 2020-05-02 23:50:43 +0200 | [diff] [blame] | 895 | iosav_run_once(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 896 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 897 | /* Drain */ |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 898 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 899 | } |
| 900 | } |
| 901 | |
Felix Held | 3b90603 | 2020-01-14 17:05:43 +0100 | [diff] [blame] | 902 | static const u32 lane_base[] = { |
| 903 | LANEBASE_B0, LANEBASE_B1, LANEBASE_B2, LANEBASE_B3, |
| 904 | LANEBASE_B4, LANEBASE_B5, LANEBASE_B6, LANEBASE_B7, |
| 905 | LANEBASE_ECC |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 906 | }; |
| 907 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 908 | void program_timings(ramctr_timing *ctrl, int channel) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 909 | { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 910 | u32 reg32, reg_roundtrip_latency, reg_pi_code, reg_logic_delay, reg_io_latency; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 911 | int lane; |
| 912 | int slotrank, slot; |
| 913 | int full_shift = 0; |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 914 | u16 pi_coding_ctrl[NUM_SLOTS]; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 915 | |
| 916 | FOR_ALL_POPULATED_RANKS { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 917 | if (full_shift < -ctrl->timings[channel][slotrank].pi_coding) |
| 918 | full_shift = -ctrl->timings[channel][slotrank].pi_coding; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 919 | } |
| 920 | |
| 921 | for (slot = 0; slot < NUM_SLOTS; slot++) |
| 922 | switch ((ctrl->rankmap[channel] >> (2 * slot)) & 3) { |
| 923 | case 0: |
| 924 | default: |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 925 | pi_coding_ctrl[slot] = 0x7f; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 926 | break; |
| 927 | case 1: |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 928 | pi_coding_ctrl[slot] = |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 929 | ctrl->timings[channel][2 * slot + 0].pi_coding + full_shift; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 930 | break; |
| 931 | case 2: |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 932 | pi_coding_ctrl[slot] = |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 933 | ctrl->timings[channel][2 * slot + 1].pi_coding + full_shift; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 934 | break; |
| 935 | case 3: |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 936 | pi_coding_ctrl[slot] = |
| 937 | (ctrl->timings[channel][2 * slot].pi_coding + |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 938 | ctrl->timings[channel][2 * slot + 1].pi_coding) / 2 + full_shift; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 939 | break; |
| 940 | } |
| 941 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 942 | /* Enable CMD XOVER */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 943 | reg32 = get_XOVER_CMD(ctrl->rankmap[channel]); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 944 | reg32 |= (pi_coding_ctrl[0] & 0x3f) << 6; |
| 945 | reg32 |= (pi_coding_ctrl[0] & 0x40) << 9; |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 946 | reg32 |= (pi_coding_ctrl[1] & 0x7f) << 18; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 947 | reg32 |= (full_shift & 0x3f) | ((full_shift & 0x40) << 6); |
| 948 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 949 | MCHBAR32(GDCRCMDPICODING_ch(channel)) = reg32; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 950 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 951 | /* Enable CLK XOVER */ |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 952 | reg_pi_code = get_XOVER_CLK(ctrl->rankmap[channel]); |
| 953 | reg_logic_delay = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 954 | |
| 955 | FOR_ALL_POPULATED_RANKS { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 956 | int shift = ctrl->timings[channel][slotrank].pi_coding + full_shift; |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 957 | int offset_pi_code; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 958 | if (shift < 0) |
| 959 | shift = 0; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 960 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 961 | offset_pi_code = ctrl->pi_code_offset + shift; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 962 | |
| 963 | /* Set CLK phase shift */ |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 964 | reg_pi_code |= (offset_pi_code & 0x3f) << (6 * slotrank); |
| 965 | reg_logic_delay |= ((offset_pi_code >> 6) & 1) << slotrank; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 966 | } |
| 967 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 968 | MCHBAR32(GDCRCKPICODE_ch(channel)) = reg_pi_code; |
| 969 | MCHBAR32(GDCRCKLOGICDELAY_ch(channel)) = reg_logic_delay; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 970 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 971 | reg_io_latency = MCHBAR32(SC_IO_LATENCY_ch(channel)); |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 972 | reg_io_latency &= ~0xffff; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 973 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 974 | reg_roundtrip_latency = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 975 | |
| 976 | FOR_ALL_POPULATED_RANKS { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 977 | int post_timA_min_high = 7, pre_timA_min_high = 7; |
| 978 | int post_timA_max_high = 0, pre_timA_max_high = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 979 | int shift_402x = 0; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 980 | int shift = ctrl->timings[channel][slotrank].pi_coding + full_shift; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 981 | |
| 982 | if (shift < 0) |
| 983 | shift = 0; |
| 984 | |
| 985 | FOR_ALL_LANES { |
Arthur Heymans | abc504f | 2017-05-15 09:36:44 +0200 | [diff] [blame] | 986 | post_timA_min_high = MIN(post_timA_min_high, |
| 987 | (ctrl->timings[channel][slotrank].lanes[lane]. |
| 988 | timA + shift) >> 6); |
| 989 | pre_timA_min_high = MIN(pre_timA_min_high, |
| 990 | ctrl->timings[channel][slotrank].lanes[lane]. |
| 991 | timA >> 6); |
| 992 | post_timA_max_high = MAX(post_timA_max_high, |
| 993 | (ctrl->timings[channel][slotrank].lanes[lane]. |
| 994 | timA + shift) >> 6); |
| 995 | pre_timA_max_high = MAX(pre_timA_max_high, |
| 996 | ctrl->timings[channel][slotrank].lanes[lane]. |
| 997 | timA >> 6); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 998 | } |
| 999 | |
| 1000 | if (pre_timA_max_high - pre_timA_min_high < |
| 1001 | post_timA_max_high - post_timA_min_high) |
| 1002 | shift_402x = +1; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1003 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1004 | else if (pre_timA_max_high - pre_timA_min_high > |
| 1005 | post_timA_max_high - post_timA_min_high) |
| 1006 | shift_402x = -1; |
| 1007 | |
Felix Held | dee167e | 2019-12-30 17:30:16 +0100 | [diff] [blame] | 1008 | reg_io_latency |= |
Felix Held | ef4fe3e | 2019-12-31 14:15:05 +0100 | [diff] [blame] | 1009 | (ctrl->timings[channel][slotrank].io_latency + shift_402x - |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1010 | post_timA_min_high) << (4 * slotrank); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1011 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1012 | reg_roundtrip_latency |= |
| 1013 | (ctrl->timings[channel][slotrank].roundtrip_latency + |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1014 | shift_402x) << (8 * slotrank); |
| 1015 | |
| 1016 | FOR_ALL_LANES { |
Felix Held | fb19c8a | 2020-01-14 21:27:59 +0100 | [diff] [blame] | 1017 | MCHBAR32(lane_base[lane] + GDCRRX(channel, slotrank)) = |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1018 | (((ctrl->timings[channel][slotrank].lanes[lane]. |
| 1019 | timA + shift) & 0x3f) |
| 1020 | | |
| 1021 | ((ctrl->timings[channel][slotrank].lanes[lane]. |
| 1022 | rising + shift) << 8) |
| 1023 | | |
| 1024 | (((ctrl->timings[channel][slotrank].lanes[lane]. |
| 1025 | timA + shift - |
| 1026 | (post_timA_min_high << 6)) & 0x1c0) << 10) |
| 1027 | | ((ctrl->timings[channel][slotrank].lanes[lane]. |
| 1028 | falling + shift) << 20)); |
| 1029 | |
Felix Held | fb19c8a | 2020-01-14 21:27:59 +0100 | [diff] [blame] | 1030 | MCHBAR32(lane_base[lane] + GDCRTX(channel, slotrank)) = |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1031 | (((ctrl->timings[channel][slotrank].lanes[lane]. |
| 1032 | timC + shift) & 0x3f) |
| 1033 | | |
| 1034 | (((ctrl->timings[channel][slotrank].lanes[lane]. |
| 1035 | timB + shift) & 0x3f) << 8) |
| 1036 | | |
| 1037 | (((ctrl->timings[channel][slotrank].lanes[lane]. |
| 1038 | timB + shift) & 0x1c0) << 9) |
| 1039 | | |
| 1040 | (((ctrl->timings[channel][slotrank].lanes[lane]. |
| 1041 | timC + shift) & 0x40) << 13)); |
| 1042 | } |
| 1043 | } |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1044 | MCHBAR32(SC_ROUNDT_LAT_ch(channel)) = reg_roundtrip_latency; |
| 1045 | MCHBAR32(SC_IO_LATENCY_ch(channel)) = reg_io_latency; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1046 | } |
| 1047 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1048 | static void test_timA(ramctr_timing *ctrl, int channel, int slotrank) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1049 | { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1050 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1051 | |
Angel Pons | ffd5015 | 2020-11-12 11:03:10 +0100 | [diff] [blame] | 1052 | iosav_write_read_mpr_sequence(channel, slotrank, ctrl->tMOD, 1, 3, 15, ctrl->CAS + 36); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1053 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1054 | /* Execute command queue */ |
Angel Pons | 38d901e | 2020-05-02 23:50:43 +0200 | [diff] [blame] | 1055 | iosav_run_once(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1056 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1057 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1058 | } |
| 1059 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1060 | static int does_lane_work(ramctr_timing *ctrl, int channel, int slotrank, int lane) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1061 | { |
| 1062 | u32 timA = ctrl->timings[channel][slotrank].lanes[lane].timA; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1063 | |
| 1064 | return (MCHBAR32(lane_base[lane] + |
| 1065 | GDCRTRAININGRESULT(channel, (timA / 32) & 1)) >> (timA % 32)) & 1; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1066 | } |
| 1067 | |
| 1068 | struct run { |
| 1069 | int middle; |
| 1070 | int end; |
| 1071 | int start; |
| 1072 | int all; |
| 1073 | int length; |
| 1074 | }; |
| 1075 | |
| 1076 | static struct run get_longest_zero_run(int *seq, int sz) |
| 1077 | { |
| 1078 | int i, ls; |
| 1079 | int bl = 0, bs = 0; |
| 1080 | struct run ret; |
| 1081 | |
| 1082 | ls = 0; |
| 1083 | for (i = 0; i < 2 * sz; i++) |
| 1084 | if (seq[i % sz]) { |
| 1085 | if (i - ls > bl) { |
| 1086 | bl = i - ls; |
| 1087 | bs = ls; |
| 1088 | } |
| 1089 | ls = i + 1; |
| 1090 | } |
| 1091 | if (bl == 0) { |
| 1092 | ret.middle = sz / 2; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1093 | ret.start = 0; |
| 1094 | ret.end = sz; |
Jacob Garber | e0c181d | 2019-04-08 22:21:43 -0600 | [diff] [blame] | 1095 | ret.length = sz; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1096 | ret.all = 1; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1097 | return ret; |
| 1098 | } |
| 1099 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1100 | ret.start = bs % sz; |
| 1101 | ret.end = (bs + bl - 1) % sz; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1102 | ret.middle = (bs + (bl - 1) / 2) % sz; |
| 1103 | ret.length = bl; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1104 | ret.all = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1105 | |
| 1106 | return ret; |
| 1107 | } |
| 1108 | |
Angel Pons | f305339 | 2020-11-13 23:31:12 +0100 | [diff] [blame] | 1109 | static void find_rcven_pi_coarse(ramctr_timing *ctrl, int channel, int slotrank, int *upperA) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1110 | { |
| 1111 | int timA; |
| 1112 | int statistics[NUM_LANES][128]; |
| 1113 | int lane; |
| 1114 | |
| 1115 | for (timA = 0; timA < 128; timA++) { |
| 1116 | FOR_ALL_LANES { |
| 1117 | ctrl->timings[channel][slotrank].lanes[lane].timA = timA; |
| 1118 | } |
| 1119 | program_timings(ctrl, channel); |
| 1120 | |
| 1121 | test_timA(ctrl, channel, slotrank); |
| 1122 | |
| 1123 | FOR_ALL_LANES { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1124 | statistics[lane][timA] = !does_lane_work(ctrl, channel, slotrank, lane); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1125 | } |
| 1126 | } |
| 1127 | FOR_ALL_LANES { |
| 1128 | struct run rn = get_longest_zero_run(statistics[lane], 128); |
| 1129 | ctrl->timings[channel][slotrank].lanes[lane].timA = rn.middle; |
| 1130 | upperA[lane] = rn.end; |
| 1131 | if (upperA[lane] < rn.middle) |
| 1132 | upperA[lane] += 128; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1133 | |
Patrick Rudolph | 368b615 | 2016-11-25 16:36:52 +0100 | [diff] [blame] | 1134 | printram("timA: %d, %d, %d: 0x%02x-0x%02x-0x%02x\n", |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1135 | channel, slotrank, lane, rn.start, rn.middle, rn.end); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1136 | } |
| 1137 | } |
| 1138 | |
Angel Pons | f305339 | 2020-11-13 23:31:12 +0100 | [diff] [blame] | 1139 | static void fine_tune_rcven_pi(ramctr_timing *ctrl, int channel, int slotrank, int *upperA) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1140 | { |
| 1141 | int timA_delta; |
| 1142 | int statistics[NUM_LANES][51]; |
| 1143 | int lane, i; |
| 1144 | |
| 1145 | memset(statistics, 0, sizeof(statistics)); |
| 1146 | |
| 1147 | for (timA_delta = -25; timA_delta <= 25; timA_delta++) { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1148 | |
| 1149 | FOR_ALL_LANES { |
| 1150 | ctrl->timings[channel][slotrank].lanes[lane].timA |
| 1151 | = upperA[lane] + timA_delta + 0x40; |
| 1152 | } |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1153 | program_timings(ctrl, channel); |
| 1154 | |
| 1155 | for (i = 0; i < 100; i++) { |
| 1156 | test_timA(ctrl, channel, slotrank); |
| 1157 | FOR_ALL_LANES { |
| 1158 | statistics[lane][timA_delta + 25] += |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1159 | does_lane_work(ctrl, channel, slotrank, lane); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1160 | } |
| 1161 | } |
| 1162 | } |
| 1163 | FOR_ALL_LANES { |
| 1164 | int last_zero, first_all; |
| 1165 | |
| 1166 | for (last_zero = -25; last_zero <= 25; last_zero++) |
| 1167 | if (statistics[lane][last_zero + 25]) |
| 1168 | break; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1169 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1170 | last_zero--; |
| 1171 | for (first_all = -25; first_all <= 25; first_all++) |
| 1172 | if (statistics[lane][first_all + 25] == 100) |
| 1173 | break; |
| 1174 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1175 | printram("lane %d: %d, %d\n", lane, last_zero, first_all); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1176 | |
| 1177 | ctrl->timings[channel][slotrank].lanes[lane].timA = |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1178 | (last_zero + first_all) / 2 + upperA[lane]; |
| 1179 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1180 | printram("Aval: %d, %d, %d: %x\n", channel, slotrank, |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1181 | lane, ctrl->timings[channel][slotrank].lanes[lane].timA); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1182 | } |
| 1183 | } |
| 1184 | |
Angel Pons | f305339 | 2020-11-13 23:31:12 +0100 | [diff] [blame] | 1185 | static int find_roundtrip_latency(ramctr_timing *ctrl, int channel, int slotrank, int *upperA) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1186 | { |
| 1187 | int works[NUM_LANES]; |
| 1188 | int lane; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1189 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1190 | while (1) { |
| 1191 | int all_works = 1, some_works = 0; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1192 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1193 | program_timings(ctrl, channel); |
| 1194 | test_timA(ctrl, channel, slotrank); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1195 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1196 | FOR_ALL_LANES { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1197 | works[lane] = !does_lane_work(ctrl, channel, slotrank, lane); |
| 1198 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1199 | if (works[lane]) |
| 1200 | some_works = 1; |
| 1201 | else |
| 1202 | all_works = 0; |
| 1203 | } |
| 1204 | if (all_works) |
| 1205 | return 0; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1206 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1207 | if (!some_works) { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1208 | if (ctrl->timings[channel][slotrank].roundtrip_latency < 2) { |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1209 | printk(BIOS_EMERG, "402x discovery failed (1): %d, %d\n", |
| 1210 | channel, slotrank); |
| 1211 | return MAKE_ERR; |
| 1212 | } |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1213 | ctrl->timings[channel][slotrank].roundtrip_latency -= 2; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1214 | printram("4024 -= 2;\n"); |
| 1215 | continue; |
| 1216 | } |
Felix Held | ef4fe3e | 2019-12-31 14:15:05 +0100 | [diff] [blame] | 1217 | ctrl->timings[channel][slotrank].io_latency += 2; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1218 | printram("4028 += 2;\n"); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1219 | |
Felix Held | ef4fe3e | 2019-12-31 14:15:05 +0100 | [diff] [blame] | 1220 | if (ctrl->timings[channel][slotrank].io_latency >= 0x10) { |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1221 | printk(BIOS_EMERG, "402x discovery failed (2): %d, %d\n", |
| 1222 | channel, slotrank); |
| 1223 | return MAKE_ERR; |
| 1224 | } |
| 1225 | FOR_ALL_LANES if (works[lane]) { |
Angel Pons | 891f2bc | 2020-01-10 01:27:28 +0100 | [diff] [blame] | 1226 | ctrl->timings[channel][slotrank].lanes[lane].timA += 128; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1227 | upperA[lane] += 128; |
Angel Pons | 891f2bc | 2020-01-10 01:27:28 +0100 | [diff] [blame] | 1228 | printram("increment %d, %d, %d\n", channel, slotrank, lane); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1229 | } |
| 1230 | } |
| 1231 | return 0; |
| 1232 | } |
| 1233 | |
Angel Pons | 12bd8ab | 2020-11-13 23:10:52 +0100 | [diff] [blame] | 1234 | static int get_logic_delay_delta(ramctr_timing *ctrl, int channel, int slotrank) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1235 | { |
| 1236 | int lane; |
Angel Pons | 12bd8ab | 2020-11-13 23:10:52 +0100 | [diff] [blame] | 1237 | u16 logic_delay_min = 7; |
| 1238 | u16 logic_delay_max = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1239 | |
| 1240 | FOR_ALL_LANES { |
Angel Pons | 12bd8ab | 2020-11-13 23:10:52 +0100 | [diff] [blame] | 1241 | const u16 logic_delay = ctrl->timings[channel][slotrank].lanes[lane].timA >> 6; |
| 1242 | |
| 1243 | logic_delay_min = MIN(logic_delay_min, logic_delay); |
| 1244 | logic_delay_max = MAX(logic_delay_max, logic_delay); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1245 | } |
Angel Pons | 12bd8ab | 2020-11-13 23:10:52 +0100 | [diff] [blame] | 1246 | |
| 1247 | if (logic_delay_max < logic_delay_min) { |
| 1248 | printk(BIOS_EMERG, "Logic delay max < min (%u < %u): %d, %d\n", |
| 1249 | logic_delay_max, logic_delay_min, channel, slotrank); |
| 1250 | } |
| 1251 | |
| 1252 | assert(logic_delay_max >= logic_delay_min); |
| 1253 | |
| 1254 | return logic_delay_max - logic_delay_min; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1255 | } |
| 1256 | |
Angel Pons | 12bd8ab | 2020-11-13 23:10:52 +0100 | [diff] [blame] | 1257 | static int align_rt_io_latency(ramctr_timing *ctrl, int channel, int slotrank, int prev) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1258 | { |
Angel Pons | 12bd8ab | 2020-11-13 23:10:52 +0100 | [diff] [blame] | 1259 | int latency_offset = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1260 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1261 | /* Get changed maxima */ |
Angel Pons | 12bd8ab | 2020-11-13 23:10:52 +0100 | [diff] [blame] | 1262 | const int post = get_logic_delay_delta(ctrl, channel, slotrank); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1263 | |
Angel Pons | 12bd8ab | 2020-11-13 23:10:52 +0100 | [diff] [blame] | 1264 | if (prev < post) |
| 1265 | latency_offset = +1; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1266 | |
Angel Pons | 12bd8ab | 2020-11-13 23:10:52 +0100 | [diff] [blame] | 1267 | else if (prev > post) |
| 1268 | latency_offset = -1; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1269 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1270 | else |
Angel Pons | 12bd8ab | 2020-11-13 23:10:52 +0100 | [diff] [blame] | 1271 | latency_offset = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1272 | |
Angel Pons | 12bd8ab | 2020-11-13 23:10:52 +0100 | [diff] [blame] | 1273 | ctrl->timings[channel][slotrank].io_latency += latency_offset; |
| 1274 | ctrl->timings[channel][slotrank].roundtrip_latency += latency_offset; |
| 1275 | printram("4024 += %d;\n", latency_offset); |
| 1276 | printram("4028 += %d;\n", latency_offset); |
| 1277 | |
| 1278 | return post; |
| 1279 | } |
| 1280 | |
| 1281 | static void compute_final_logic_delay(ramctr_timing *ctrl, int channel, int slotrank) |
| 1282 | { |
| 1283 | u16 logic_delay_min = 7; |
| 1284 | int lane; |
| 1285 | |
| 1286 | FOR_ALL_LANES { |
| 1287 | const u16 logic_delay = ctrl->timings[channel][slotrank].lanes[lane].timA >> 6; |
| 1288 | |
| 1289 | logic_delay_min = MIN(logic_delay_min, logic_delay); |
| 1290 | } |
| 1291 | |
| 1292 | if (logic_delay_min >= 2) { |
| 1293 | printk(BIOS_WARNING, "Logic delay %u greater than 1: %d %d\n", |
| 1294 | logic_delay_min, channel, slotrank); |
| 1295 | } |
| 1296 | |
| 1297 | FOR_ALL_LANES { |
| 1298 | ctrl->timings[channel][slotrank].lanes[lane].timA -= logic_delay_min << 6; |
| 1299 | } |
| 1300 | ctrl->timings[channel][slotrank].io_latency -= logic_delay_min; |
| 1301 | printram("4028 -= %d;\n", logic_delay_min); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1302 | } |
| 1303 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1304 | /* |
| 1305 | * Compensate the skew between DQS and DQs. |
| 1306 | * |
Angel Pons | 891f2bc | 2020-01-10 01:27:28 +0100 | [diff] [blame] | 1307 | * To ease PCB design, a small skew between Data Strobe signals and Data Signals is allowed. |
| 1308 | * The controller has to measure and compensate this skew for every byte-lane. By delaying |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1309 | * either all DQ signals or DQS signal, a full phase shift can be introduced. It is assumed |
Angel Pons | 891f2bc | 2020-01-10 01:27:28 +0100 | [diff] [blame] | 1310 | * that one byte-lane's DQs signals have the same routing delay. |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1311 | * |
Angel Pons | 891f2bc | 2020-01-10 01:27:28 +0100 | [diff] [blame] | 1312 | * To measure the actual skew, the DRAM is placed in "read leveling" mode. In read leveling |
| 1313 | * mode the DRAM-chip outputs an alternating periodic pattern. The memory controller iterates |
| 1314 | * over all possible values to do a full phase shift and issues read commands. With DQS and |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1315 | * DQ in phase the data being read is expected to alternate on every byte: |
| 1316 | * |
Angel Pons | 891f2bc | 2020-01-10 01:27:28 +0100 | [diff] [blame] | 1317 | * 0xFF 0x00 0xFF ... |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1318 | * |
Angel Pons | 891f2bc | 2020-01-10 01:27:28 +0100 | [diff] [blame] | 1319 | * Once the controller has detected this pattern a bit in the result register is set for the |
| 1320 | * current phase shift. |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1321 | */ |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1322 | int read_training(ramctr_timing *ctrl) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1323 | { |
| 1324 | int channel, slotrank, lane; |
| 1325 | int err; |
| 1326 | |
| 1327 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS { |
| 1328 | int all_high, some_high; |
| 1329 | int upperA[NUM_LANES]; |
Angel Pons | 12bd8ab | 2020-11-13 23:10:52 +0100 | [diff] [blame] | 1330 | int prev; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1331 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1332 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1333 | |
Angel Pons | ffd5015 | 2020-11-12 11:03:10 +0100 | [diff] [blame] | 1334 | iosav_write_prea_sequence(channel, slotrank, ctrl->tRP, 0); |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 1335 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1336 | /* Execute command queue */ |
Angel Pons | 38d901e | 2020-05-02 23:50:43 +0200 | [diff] [blame] | 1337 | iosav_run_once(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1338 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1339 | MCHBAR32(GDCRTRAININGMOD) = (slotrank << 2) | 0x8001; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1340 | |
Felix Held | ef4fe3e | 2019-12-31 14:15:05 +0100 | [diff] [blame] | 1341 | ctrl->timings[channel][slotrank].io_latency = 4; |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1342 | ctrl->timings[channel][slotrank].roundtrip_latency = 55; |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1343 | program_timings(ctrl, channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1344 | |
Angel Pons | f305339 | 2020-11-13 23:31:12 +0100 | [diff] [blame] | 1345 | find_rcven_pi_coarse(ctrl, channel, slotrank, upperA); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1346 | |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1347 | all_high = 1; |
| 1348 | some_high = 0; |
| 1349 | FOR_ALL_LANES { |
Angel Pons | 891f2bc | 2020-01-10 01:27:28 +0100 | [diff] [blame] | 1350 | if (ctrl->timings[channel][slotrank].lanes[lane].timA >= 0x40) |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1351 | some_high = 1; |
| 1352 | else |
| 1353 | all_high = 0; |
| 1354 | } |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1355 | |
| 1356 | if (all_high) { |
Felix Held | ef4fe3e | 2019-12-31 14:15:05 +0100 | [diff] [blame] | 1357 | ctrl->timings[channel][slotrank].io_latency--; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1358 | printram("4028--;\n"); |
| 1359 | FOR_ALL_LANES { |
Angel Pons | 891f2bc | 2020-01-10 01:27:28 +0100 | [diff] [blame] | 1360 | ctrl->timings[channel][slotrank].lanes[lane].timA -= 0x40; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1361 | upperA[lane] -= 0x40; |
| 1362 | |
| 1363 | } |
| 1364 | } else if (some_high) { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1365 | ctrl->timings[channel][slotrank].roundtrip_latency++; |
Felix Held | ef4fe3e | 2019-12-31 14:15:05 +0100 | [diff] [blame] | 1366 | ctrl->timings[channel][slotrank].io_latency++; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1367 | printram("4024++;\n"); |
| 1368 | printram("4028++;\n"); |
| 1369 | } |
| 1370 | |
| 1371 | program_timings(ctrl, channel); |
| 1372 | |
Angel Pons | 12bd8ab | 2020-11-13 23:10:52 +0100 | [diff] [blame] | 1373 | prev = get_logic_delay_delta(ctrl, channel, slotrank); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1374 | |
Angel Pons | f305339 | 2020-11-13 23:31:12 +0100 | [diff] [blame] | 1375 | err = find_roundtrip_latency(ctrl, channel, slotrank, upperA); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1376 | if (err) |
| 1377 | return err; |
| 1378 | |
Angel Pons | 12bd8ab | 2020-11-13 23:10:52 +0100 | [diff] [blame] | 1379 | prev = align_rt_io_latency(ctrl, channel, slotrank, prev); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1380 | |
Angel Pons | f305339 | 2020-11-13 23:31:12 +0100 | [diff] [blame] | 1381 | fine_tune_rcven_pi(ctrl, channel, slotrank, upperA); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1382 | |
Angel Pons | 12bd8ab | 2020-11-13 23:10:52 +0100 | [diff] [blame] | 1383 | prev = align_rt_io_latency(ctrl, channel, slotrank, prev); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1384 | |
Angel Pons | 12bd8ab | 2020-11-13 23:10:52 +0100 | [diff] [blame] | 1385 | compute_final_logic_delay(ctrl, channel, slotrank); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1386 | |
Angel Pons | 12bd8ab | 2020-11-13 23:10:52 +0100 | [diff] [blame] | 1387 | align_rt_io_latency(ctrl, channel, slotrank, prev); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1388 | |
| 1389 | printram("4/8: %d, %d, %x, %x\n", channel, slotrank, |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1390 | ctrl->timings[channel][slotrank].roundtrip_latency, |
Felix Held | ef4fe3e | 2019-12-31 14:15:05 +0100 | [diff] [blame] | 1391 | ctrl->timings[channel][slotrank].io_latency); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1392 | |
| 1393 | printram("final results:\n"); |
| 1394 | FOR_ALL_LANES |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1395 | printram("Aval: %d, %d, %d: %x\n", channel, slotrank, lane, |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1396 | ctrl->timings[channel][slotrank].lanes[lane].timA); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1397 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1398 | MCHBAR32(GDCRTRAININGMOD) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1399 | |
| 1400 | toggle_io_reset(); |
| 1401 | } |
| 1402 | |
| 1403 | FOR_ALL_POPULATED_CHANNELS { |
| 1404 | program_timings(ctrl, channel); |
| 1405 | } |
Angel Pons | 50a6fe7 | 2020-11-14 01:18:14 +0100 | [diff] [blame] | 1406 | FOR_ALL_POPULATED_CHANNELS FOR_ALL_LANES { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1407 | MCHBAR32(IOSAV_By_BW_MASK_ch(channel, lane)) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1408 | } |
| 1409 | return 0; |
| 1410 | } |
| 1411 | |
Angel Pons | 011661c | 2020-11-15 18:21:35 +0100 | [diff] [blame] | 1412 | static void test_tx_dq(ramctr_timing *ctrl, int channel, int slotrank) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1413 | { |
| 1414 | int lane; |
| 1415 | |
| 1416 | FOR_ALL_LANES { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1417 | MCHBAR32(IOSAV_By_ERROR_COUNT_ch(channel, lane)) = 0; |
| 1418 | MCHBAR32(IOSAV_By_BW_SERROR_C_ch(channel, lane)); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1419 | } |
| 1420 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1421 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1422 | |
Angel Pons | ffd5015 | 2020-11-12 11:03:10 +0100 | [diff] [blame] | 1423 | iosav_write_misc_write_sequence(ctrl, channel, slotrank, |
| 1424 | MAX(ctrl->tRRD, (ctrl->tFAW >> 2) + 1), 4, 4, 500, 18); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1425 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1426 | /* Execute command queue */ |
Angel Pons | 38d901e | 2020-05-02 23:50:43 +0200 | [diff] [blame] | 1427 | iosav_run_once(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1428 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1429 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1430 | |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 1431 | const struct iosav_ssq rd_sequence[] = { |
| 1432 | /* DRAM command PREA */ |
| 1433 | [0] = { |
Angel Pons | 3abd206 | 2020-05-03 00:25:02 +0200 | [diff] [blame] | 1434 | .sp_cmd_ctrl = { |
| 1435 | .command = IOSAV_PRE, |
| 1436 | .ranksel_ap = 1, |
| 1437 | }, |
| 1438 | .subseq_ctrl = { |
| 1439 | .cmd_executions = 1, |
| 1440 | .cmd_delay_gap = 3, |
| 1441 | .post_ssq_wait = ctrl->tRP, |
| 1442 | .data_direction = SSQ_NA, |
| 1443 | }, |
| 1444 | .sp_cmd_addr = { |
| 1445 | .address = 1024, |
| 1446 | .rowbits = 6, |
| 1447 | .bank = 0, |
| 1448 | .rank = slotrank, |
| 1449 | }, |
| 1450 | .addr_update = { |
| 1451 | .addr_wrap = 18, |
| 1452 | }, |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 1453 | }, |
| 1454 | /* DRAM command ACT */ |
| 1455 | [1] = { |
Angel Pons | 3abd206 | 2020-05-03 00:25:02 +0200 | [diff] [blame] | 1456 | .sp_cmd_ctrl = { |
| 1457 | .command = IOSAV_ACT, |
| 1458 | .ranksel_ap = 1, |
| 1459 | }, |
| 1460 | .subseq_ctrl = { |
| 1461 | .cmd_executions = 8, |
| 1462 | .cmd_delay_gap = MAX(ctrl->tRRD, (ctrl->tFAW >> 2) + 1), |
| 1463 | .post_ssq_wait = ctrl->CAS, |
| 1464 | .data_direction = SSQ_NA, |
| 1465 | }, |
| 1466 | .sp_cmd_addr = { |
| 1467 | .address = 0, |
| 1468 | .rowbits = 6, |
| 1469 | .bank = 0, |
| 1470 | .rank = slotrank, |
| 1471 | }, |
| 1472 | .addr_update = { |
| 1473 | .inc_bank = 1, |
| 1474 | .addr_wrap = 18, |
| 1475 | }, |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 1476 | }, |
| 1477 | /* DRAM command RD */ |
| 1478 | [2] = { |
Angel Pons | 3abd206 | 2020-05-03 00:25:02 +0200 | [diff] [blame] | 1479 | .sp_cmd_ctrl = { |
| 1480 | .command = IOSAV_RD, |
| 1481 | .ranksel_ap = 1, |
| 1482 | }, |
| 1483 | .subseq_ctrl = { |
| 1484 | .cmd_executions = 500, |
| 1485 | .cmd_delay_gap = 4, |
| 1486 | .post_ssq_wait = MAX(ctrl->tRTP, 8), |
| 1487 | .data_direction = SSQ_RD, |
| 1488 | }, |
| 1489 | .sp_cmd_addr = { |
| 1490 | .address = 0, |
| 1491 | .rowbits = 0, |
| 1492 | .bank = 0, |
| 1493 | .rank = slotrank, |
| 1494 | }, |
| 1495 | .addr_update = { |
| 1496 | .inc_addr_8 = 1, |
| 1497 | .addr_wrap = 18, |
| 1498 | }, |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 1499 | }, |
| 1500 | /* DRAM command PREA */ |
| 1501 | [3] = { |
Angel Pons | 3abd206 | 2020-05-03 00:25:02 +0200 | [diff] [blame] | 1502 | .sp_cmd_ctrl = { |
| 1503 | .command = IOSAV_PRE, |
| 1504 | .ranksel_ap = 1, |
| 1505 | }, |
| 1506 | .subseq_ctrl = { |
| 1507 | .cmd_executions = 1, |
| 1508 | .cmd_delay_gap = 3, |
| 1509 | .post_ssq_wait = ctrl->tRP, |
| 1510 | .data_direction = SSQ_NA, |
| 1511 | }, |
| 1512 | .sp_cmd_addr = { |
| 1513 | .address = 1024, |
| 1514 | .rowbits = 6, |
| 1515 | .bank = 0, |
| 1516 | .rank = slotrank, |
| 1517 | }, |
| 1518 | .addr_update = { |
Angel Pons | fd9a8b6 | 2020-11-13 13:56:30 +0100 | [diff] [blame] | 1519 | .addr_wrap = 18, |
Angel Pons | 3abd206 | 2020-05-03 00:25:02 +0200 | [diff] [blame] | 1520 | }, |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 1521 | }, |
| 1522 | }; |
| 1523 | iosav_write_sequence(channel, rd_sequence, ARRAY_SIZE(rd_sequence)); |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 1524 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1525 | /* Execute command queue */ |
Angel Pons | 38d901e | 2020-05-02 23:50:43 +0200 | [diff] [blame] | 1526 | iosav_run_once(channel); |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 1527 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1528 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1529 | } |
| 1530 | |
Angel Pons | 011661c | 2020-11-15 18:21:35 +0100 | [diff] [blame] | 1531 | static void tx_dq_threshold_process(int *data, const int count) |
Tobias Diedrich | 87c4f11 | 2017-12-07 22:40:20 +0100 | [diff] [blame] | 1532 | { |
| 1533 | int min = data[0]; |
| 1534 | int max = min; |
| 1535 | int i; |
| 1536 | for (i = 1; i < count; i++) { |
| 1537 | if (min > data[i]) |
| 1538 | min = data[i]; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1539 | |
Tobias Diedrich | 87c4f11 | 2017-12-07 22:40:20 +0100 | [diff] [blame] | 1540 | if (max < data[i]) |
| 1541 | max = data[i]; |
| 1542 | } |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1543 | int threshold = min / 2 + max / 2; |
Tobias Diedrich | 87c4f11 | 2017-12-07 22:40:20 +0100 | [diff] [blame] | 1544 | for (i = 0; i < count; i++) |
| 1545 | data[i] = data[i] > threshold; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1546 | |
Angel Pons | 891f2bc | 2020-01-10 01:27:28 +0100 | [diff] [blame] | 1547 | printram("threshold=%d min=%d max=%d\n", threshold, min, max); |
Tobias Diedrich | 87c4f11 | 2017-12-07 22:40:20 +0100 | [diff] [blame] | 1548 | } |
| 1549 | |
Angel Pons | 011661c | 2020-11-15 18:21:35 +0100 | [diff] [blame] | 1550 | static int tx_dq_write_leveling(ramctr_timing *ctrl, int channel, int slotrank) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1551 | { |
Angel Pons | 011661c | 2020-11-15 18:21:35 +0100 | [diff] [blame] | 1552 | int tx_dq; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1553 | int stats[NUM_LANES][MAX_TIMC + 1]; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1554 | int lane; |
| 1555 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1556 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1557 | |
Angel Pons | ffd5015 | 2020-11-12 11:03:10 +0100 | [diff] [blame] | 1558 | iosav_write_prea_sequence(channel, slotrank, ctrl->tRP, 18); |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 1559 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1560 | /* Execute command queue */ |
Angel Pons | 38d901e | 2020-05-02 23:50:43 +0200 | [diff] [blame] | 1561 | iosav_run_once(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1562 | |
Angel Pons | 011661c | 2020-11-15 18:21:35 +0100 | [diff] [blame] | 1563 | for (tx_dq = 0; tx_dq <= MAX_TIMC; tx_dq++) { |
| 1564 | FOR_ALL_LANES ctrl->timings[channel][slotrank].lanes[lane].timC = tx_dq; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1565 | program_timings(ctrl, channel); |
| 1566 | |
Angel Pons | 011661c | 2020-11-15 18:21:35 +0100 | [diff] [blame] | 1567 | test_tx_dq(ctrl, channel, slotrank); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1568 | |
| 1569 | FOR_ALL_LANES { |
Angel Pons | 011661c | 2020-11-15 18:21:35 +0100 | [diff] [blame] | 1570 | stats[lane][tx_dq] = MCHBAR32(IOSAV_By_ERROR_COUNT_ch(channel, lane)); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1571 | } |
| 1572 | } |
| 1573 | FOR_ALL_LANES { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1574 | struct run rn = get_longest_zero_run(stats[lane], ARRAY_SIZE(stats[lane])); |
| 1575 | |
Tobias Diedrich | 87c4f11 | 2017-12-07 22:40:20 +0100 | [diff] [blame] | 1576 | if (rn.all || rn.length < 8) { |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1577 | printk(BIOS_EMERG, "timC discovery failed: %d, %d, %d\n", |
| 1578 | channel, slotrank, lane); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1579 | /* |
| 1580 | * With command training not being done yet, the lane can be erroneous. |
| 1581 | * Take the average as reference and try again to find a run. |
Tobias Diedrich | 87c4f11 | 2017-12-07 22:40:20 +0100 | [diff] [blame] | 1582 | */ |
Angel Pons | 011661c | 2020-11-15 18:21:35 +0100 | [diff] [blame] | 1583 | tx_dq_threshold_process(stats[lane], ARRAY_SIZE(stats[lane])); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1584 | rn = get_longest_zero_run(stats[lane], ARRAY_SIZE(stats[lane])); |
| 1585 | |
Tobias Diedrich | 87c4f11 | 2017-12-07 22:40:20 +0100 | [diff] [blame] | 1586 | if (rn.all || rn.length < 8) { |
| 1587 | printk(BIOS_EMERG, "timC recovery failed\n"); |
| 1588 | return MAKE_ERR; |
| 1589 | } |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1590 | } |
Tobias Diedrich | 87c4f11 | 2017-12-07 22:40:20 +0100 | [diff] [blame] | 1591 | ctrl->timings[channel][slotrank].lanes[lane].timC = rn.middle; |
Patrick Rudolph | 368b615 | 2016-11-25 16:36:52 +0100 | [diff] [blame] | 1592 | printram("timC: %d, %d, %d: 0x%02x-0x%02x-0x%02x\n", |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 1593 | channel, slotrank, lane, rn.start, rn.middle, rn.end); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1594 | } |
| 1595 | return 0; |
| 1596 | } |
| 1597 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1598 | static int get_precedening_channels(ramctr_timing *ctrl, int target_channel) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1599 | { |
| 1600 | int channel, ret = 0; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1601 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1602 | FOR_ALL_POPULATED_CHANNELS if (channel < target_channel) |
| 1603 | ret++; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1604 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1605 | return ret; |
| 1606 | } |
| 1607 | |
Angel Pons | 765d465 | 2020-11-11 14:44:35 +0100 | [diff] [blame] | 1608 | /* Each cacheline is 64 bits long */ |
| 1609 | static void program_wdb_pattern_length(int channel, const unsigned int num_cachelines) |
| 1610 | { |
| 1611 | MCHBAR8(IOSAV_DATA_CTL_ch(channel)) = num_cachelines / 8 - 1; |
| 1612 | } |
| 1613 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1614 | static void fill_pattern0(ramctr_timing *ctrl, int channel, u32 a, u32 b) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1615 | { |
Subrata Banik | b1434fc | 2019-03-15 22:20:41 +0530 | [diff] [blame] | 1616 | unsigned int j; |
Angel Pons | 891f2bc | 2020-01-10 01:27:28 +0100 | [diff] [blame] | 1617 | unsigned int channel_offset = get_precedening_channels(ctrl, channel) * 0x40; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1618 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1619 | for (j = 0; j < 16; j++) |
| 1620 | write32((void *)(0x04000000 + channel_offset + 4 * j), j & 2 ? b : a); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1621 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1622 | sfence(); |
Angel Pons | 765d465 | 2020-11-11 14:44:35 +0100 | [diff] [blame] | 1623 | |
| 1624 | program_wdb_pattern_length(channel, 8); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1625 | } |
| 1626 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1627 | static int num_of_channels(const ramctr_timing *ctrl) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1628 | { |
| 1629 | int ret = 0; |
| 1630 | int channel; |
| 1631 | FOR_ALL_POPULATED_CHANNELS ret++; |
| 1632 | return ret; |
| 1633 | } |
| 1634 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1635 | static void fill_pattern1(ramctr_timing *ctrl, int channel) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1636 | { |
Subrata Banik | b1434fc | 2019-03-15 22:20:41 +0530 | [diff] [blame] | 1637 | unsigned int j; |
Angel Pons | 891f2bc | 2020-01-10 01:27:28 +0100 | [diff] [blame] | 1638 | unsigned int channel_offset = get_precedening_channels(ctrl, channel) * 0x40; |
Subrata Banik | b1434fc | 2019-03-15 22:20:41 +0530 | [diff] [blame] | 1639 | unsigned int channel_step = 0x40 * num_of_channels(ctrl); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1640 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1641 | for (j = 0; j < 16; j++) |
| 1642 | write32((void *)(0x04000000 + channel_offset + j * 4), 0xffffffff); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1643 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1644 | for (j = 0; j < 16; j++) |
| 1645 | write32((void *)(0x04000000 + channel_offset + channel_step + j * 4), 0); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1646 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1647 | sfence(); |
Angel Pons | 765d465 | 2020-11-11 14:44:35 +0100 | [diff] [blame] | 1648 | |
| 1649 | program_wdb_pattern_length(channel, 16); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1650 | } |
| 1651 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1652 | static void precharge(ramctr_timing *ctrl) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1653 | { |
| 1654 | int channel, slotrank, lane; |
| 1655 | |
| 1656 | FOR_ALL_POPULATED_CHANNELS { |
| 1657 | FOR_ALL_POPULATED_RANKS FOR_ALL_LANES { |
Angel Pons | 891f2bc | 2020-01-10 01:27:28 +0100 | [diff] [blame] | 1658 | ctrl->timings[channel][slotrank].lanes[lane].falling = 16; |
| 1659 | ctrl->timings[channel][slotrank].lanes[lane].rising = 16; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1660 | } |
| 1661 | |
| 1662 | program_timings(ctrl, channel); |
| 1663 | |
| 1664 | FOR_ALL_POPULATED_RANKS { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1665 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1666 | |
Angel Pons | ffd5015 | 2020-11-12 11:03:10 +0100 | [diff] [blame] | 1667 | iosav_write_read_mpr_sequence( |
| 1668 | channel, slotrank, ctrl->tMOD, 3, 4, 1, ctrl->CAS + 8); |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 1669 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1670 | /* Execute command queue */ |
Angel Pons | 38d901e | 2020-05-02 23:50:43 +0200 | [diff] [blame] | 1671 | iosav_run_once(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1672 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1673 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1674 | } |
| 1675 | |
| 1676 | FOR_ALL_POPULATED_RANKS FOR_ALL_LANES { |
Angel Pons | 891f2bc | 2020-01-10 01:27:28 +0100 | [diff] [blame] | 1677 | ctrl->timings[channel][slotrank].lanes[lane].falling = 48; |
| 1678 | ctrl->timings[channel][slotrank].lanes[lane].rising = 48; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1679 | } |
| 1680 | |
| 1681 | program_timings(ctrl, channel); |
| 1682 | |
| 1683 | FOR_ALL_POPULATED_RANKS { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1684 | wait_for_iosav(channel); |
Angel Pons | 3abd206 | 2020-05-03 00:25:02 +0200 | [diff] [blame] | 1685 | |
Angel Pons | ffd5015 | 2020-11-12 11:03:10 +0100 | [diff] [blame] | 1686 | iosav_write_read_mpr_sequence( |
| 1687 | channel, slotrank, ctrl->tMOD, 3, 4, 1, ctrl->CAS + 8); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1688 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1689 | /* Execute command queue */ |
Angel Pons | 38d901e | 2020-05-02 23:50:43 +0200 | [diff] [blame] | 1690 | iosav_run_once(channel); |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 1691 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1692 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1693 | } |
| 1694 | } |
| 1695 | } |
| 1696 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1697 | static void test_timB(ramctr_timing *ctrl, int channel, int slotrank) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1698 | { |
Angel Pons | 59996e0 | 2020-11-14 16:34:35 +0100 | [diff] [blame^] | 1699 | /* First DQS/DQS# rising edge after write leveling mode is programmed */ |
| 1700 | const u32 tWLMRD = 40; |
| 1701 | |
| 1702 | u32 mr1reg = make_mr1(ctrl, slotrank, channel) | 1 << 7; |
| 1703 | int bank = 1; |
| 1704 | |
| 1705 | if (ctrl->rank_mirror[channel][slotrank]) |
| 1706 | ddr3_mirror_mrreg(&bank, &mr1reg); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1707 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1708 | wait_for_iosav(channel); |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 1709 | |
| 1710 | const struct iosav_ssq sequence[] = { |
Angel Pons | 59996e0 | 2020-11-14 16:34:35 +0100 | [diff] [blame^] | 1711 | /* DRAM command MRS: enable DQs on this slotrank */ |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 1712 | [0] = { |
Angel Pons | 3abd206 | 2020-05-03 00:25:02 +0200 | [diff] [blame] | 1713 | .sp_cmd_ctrl = { |
Angel Pons | 59996e0 | 2020-11-14 16:34:35 +0100 | [diff] [blame^] | 1714 | .command = IOSAV_MRS, |
| 1715 | .ranksel_ap = 1, |
| 1716 | }, |
| 1717 | .subseq_ctrl = { |
| 1718 | .cmd_executions = 1, |
| 1719 | .cmd_delay_gap = 3, |
| 1720 | .post_ssq_wait = tWLMRD, |
| 1721 | .data_direction = SSQ_NA, |
| 1722 | }, |
| 1723 | .sp_cmd_addr = { |
| 1724 | .address = mr1reg, |
| 1725 | .rowbits = 6, |
| 1726 | .bank = bank, |
| 1727 | .rank = slotrank, |
| 1728 | }, |
| 1729 | }, |
| 1730 | /* DRAM command NOP */ |
| 1731 | [1] = { |
| 1732 | .sp_cmd_ctrl = { |
Angel Pons | 3abd206 | 2020-05-03 00:25:02 +0200 | [diff] [blame] | 1733 | .command = IOSAV_NOP, |
| 1734 | .ranksel_ap = 1, |
| 1735 | }, |
| 1736 | .subseq_ctrl = { |
| 1737 | .cmd_executions = 1, |
| 1738 | .cmd_delay_gap = 3, |
| 1739 | .post_ssq_wait = ctrl->CWL + ctrl->tWLO, |
| 1740 | .data_direction = SSQ_WR, |
| 1741 | }, |
| 1742 | .sp_cmd_addr = { |
| 1743 | .address = 8, |
| 1744 | .rowbits = 0, |
| 1745 | .bank = 0, |
| 1746 | .rank = slotrank, |
| 1747 | }, |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 1748 | }, |
| 1749 | /* DRAM command NOP */ |
Angel Pons | 59996e0 | 2020-11-14 16:34:35 +0100 | [diff] [blame^] | 1750 | [2] = { |
Angel Pons | 3abd206 | 2020-05-03 00:25:02 +0200 | [diff] [blame] | 1751 | .sp_cmd_ctrl = { |
| 1752 | .command = IOSAV_NOP_ALT, |
| 1753 | .ranksel_ap = 1, |
| 1754 | }, |
| 1755 | .subseq_ctrl = { |
| 1756 | .cmd_executions = 1, |
| 1757 | .cmd_delay_gap = 3, |
| 1758 | .post_ssq_wait = ctrl->CAS + 38, |
| 1759 | .data_direction = SSQ_RD, |
| 1760 | }, |
| 1761 | .sp_cmd_addr = { |
| 1762 | .address = 4, |
| 1763 | .rowbits = 0, |
| 1764 | .bank = 0, |
| 1765 | .rank = slotrank, |
| 1766 | }, |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 1767 | }, |
Angel Pons | 59996e0 | 2020-11-14 16:34:35 +0100 | [diff] [blame^] | 1768 | /* DRAM command MRS: disable DQs on this slotrank */ |
| 1769 | [3] = { |
| 1770 | .sp_cmd_ctrl = { |
| 1771 | .command = IOSAV_MRS, |
| 1772 | .ranksel_ap = 1, |
| 1773 | }, |
| 1774 | .subseq_ctrl = { |
| 1775 | .cmd_executions = 1, |
| 1776 | .cmd_delay_gap = 3, |
| 1777 | .post_ssq_wait = ctrl->tMOD, |
| 1778 | .data_direction = SSQ_NA, |
| 1779 | }, |
| 1780 | .sp_cmd_addr = { |
| 1781 | .address = mr1reg | 1 << 12, |
| 1782 | .rowbits = 6, |
| 1783 | .bank = bank, |
| 1784 | .rank = slotrank, |
| 1785 | }, |
| 1786 | }, |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 1787 | }; |
| 1788 | iosav_write_sequence(channel, sequence, ARRAY_SIZE(sequence)); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1789 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1790 | /* Execute command queue */ |
Angel Pons | 38d901e | 2020-05-02 23:50:43 +0200 | [diff] [blame] | 1791 | iosav_run_once(channel); |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 1792 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1793 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1794 | } |
| 1795 | |
| 1796 | static int discover_timB(ramctr_timing *ctrl, int channel, int slotrank) |
| 1797 | { |
| 1798 | int timB; |
| 1799 | int statistics[NUM_LANES][128]; |
| 1800 | int lane; |
| 1801 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1802 | MCHBAR32(GDCRTRAININGMOD) = 0x108052 | (slotrank << 2); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1803 | |
| 1804 | for (timB = 0; timB < 128; timB++) { |
| 1805 | FOR_ALL_LANES { |
| 1806 | ctrl->timings[channel][slotrank].lanes[lane].timB = timB; |
| 1807 | } |
| 1808 | program_timings(ctrl, channel); |
| 1809 | |
| 1810 | test_timB(ctrl, channel, slotrank); |
| 1811 | |
| 1812 | FOR_ALL_LANES { |
Felix Held | fb19c8a | 2020-01-14 21:27:59 +0100 | [diff] [blame] | 1813 | statistics[lane][timB] = !((MCHBAR32(lane_base[lane] + |
| 1814 | GDCRTRAININGRESULT(channel, (timB / 32) & 1)) >> |
| 1815 | (timB % 32)) & 1); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1816 | } |
| 1817 | } |
| 1818 | FOR_ALL_LANES { |
| 1819 | struct run rn = get_longest_zero_run(statistics[lane], 128); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1820 | /* |
| 1821 | * timC is a direct function of timB's 6 LSBs. Some tests increments the value |
| 1822 | * of timB by a small value, which might cause the 6-bit value to overflow if |
| 1823 | * it's close to 0x3f. Increment the value by a small offset if it's likely |
| 1824 | * to overflow, to make sure it won't overflow while running tests and bricks |
| 1825 | * the system due to a non matching timC. |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1826 | * |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1827 | * TODO: find out why some tests (edge write discovery) increment timB. |
| 1828 | */ |
| 1829 | if ((rn.start & 0x3f) == 0x3e) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1830 | rn.start += 2; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1831 | else if ((rn.start & 0x3f) == 0x3f) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1832 | rn.start += 1; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1833 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1834 | ctrl->timings[channel][slotrank].lanes[lane].timB = rn.start; |
| 1835 | if (rn.all) { |
| 1836 | printk(BIOS_EMERG, "timB discovery failed: %d, %d, %d\n", |
| 1837 | channel, slotrank, lane); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1838 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1839 | return MAKE_ERR; |
| 1840 | } |
Patrick Rudolph | 368b615 | 2016-11-25 16:36:52 +0100 | [diff] [blame] | 1841 | printram("timB: %d, %d, %d: 0x%02x-0x%02x-0x%02x\n", |
| 1842 | channel, slotrank, lane, rn.start, rn.middle, rn.end); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1843 | } |
| 1844 | return 0; |
| 1845 | } |
| 1846 | |
| 1847 | static int get_timB_high_adjust(u64 val) |
| 1848 | { |
| 1849 | int i; |
| 1850 | |
Angel Pons | bf13ef0 | 2020-11-11 18:40:06 +0100 | [diff] [blame] | 1851 | /* DQS is good enough */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1852 | if (val == 0xffffffffffffffffLL) |
| 1853 | return 0; |
| 1854 | |
| 1855 | if (val >= 0xf000000000000000LL) { |
Angel Pons | bf13ef0 | 2020-11-11 18:40:06 +0100 | [diff] [blame] | 1856 | /* DQS is late, needs negative adjustment */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1857 | for (i = 0; i < 8; i++) |
| 1858 | if (val << (8 * (7 - i) + 4)) |
| 1859 | return -i; |
| 1860 | } else { |
Angel Pons | bf13ef0 | 2020-11-11 18:40:06 +0100 | [diff] [blame] | 1861 | /* DQS is early, needs positive adjustment */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1862 | for (i = 0; i < 8; i++) |
| 1863 | if (val >> (8 * (7 - i) + 4)) |
| 1864 | return i; |
| 1865 | } |
| 1866 | return 8; |
| 1867 | } |
| 1868 | |
Angel Pons | bf13ef0 | 2020-11-11 18:40:06 +0100 | [diff] [blame] | 1869 | static void train_write_flyby(ramctr_timing *ctrl) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1870 | { |
| 1871 | int channel, slotrank, lane, old; |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1872 | MCHBAR32(GDCRTRAININGMOD) = 0x200; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1873 | FOR_ALL_POPULATED_CHANNELS { |
| 1874 | fill_pattern1(ctrl, channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1875 | } |
| 1876 | FOR_ALL_POPULATED_CHANNELS FOR_ALL_POPULATED_RANKS { |
| 1877 | |
Angel Pons | 765d465 | 2020-11-11 14:44:35 +0100 | [diff] [blame] | 1878 | /* Reset read and write WDB pointers */ |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1879 | MCHBAR32(IOSAV_DATA_CTL_ch(channel)) = 0x10001; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1880 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1881 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1882 | |
Angel Pons | ffd5015 | 2020-11-12 11:03:10 +0100 | [diff] [blame] | 1883 | iosav_write_misc_write_sequence(ctrl, channel, slotrank, 3, 1, 3, 3, 31); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1884 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1885 | /* Execute command queue */ |
Angel Pons | 38d901e | 2020-05-02 23:50:43 +0200 | [diff] [blame] | 1886 | iosav_run_once(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1887 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1888 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1889 | |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 1890 | const struct iosav_ssq rd_sequence[] = { |
| 1891 | /* DRAM command PREA */ |
| 1892 | [0] = { |
Angel Pons | 3abd206 | 2020-05-03 00:25:02 +0200 | [diff] [blame] | 1893 | .sp_cmd_ctrl = { |
| 1894 | .command = IOSAV_PRE, |
| 1895 | .ranksel_ap = 1, |
| 1896 | }, |
| 1897 | .subseq_ctrl = { |
| 1898 | .cmd_executions = 1, |
| 1899 | .cmd_delay_gap = 3, |
| 1900 | .post_ssq_wait = ctrl->tRP, |
| 1901 | .data_direction = SSQ_NA, |
| 1902 | }, |
| 1903 | .sp_cmd_addr = { |
| 1904 | .address = 1024, |
| 1905 | .rowbits = 6, |
| 1906 | .bank = 0, |
| 1907 | .rank = slotrank, |
| 1908 | }, |
| 1909 | .addr_update = { |
| 1910 | .addr_wrap = 18, |
| 1911 | }, |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 1912 | }, |
| 1913 | /* DRAM command ACT */ |
| 1914 | [1] = { |
Angel Pons | 3abd206 | 2020-05-03 00:25:02 +0200 | [diff] [blame] | 1915 | .sp_cmd_ctrl = { |
| 1916 | .command = IOSAV_ACT, |
| 1917 | .ranksel_ap = 1, |
| 1918 | }, |
| 1919 | .subseq_ctrl = { |
| 1920 | .cmd_executions = 1, |
| 1921 | .cmd_delay_gap = 3, |
| 1922 | .post_ssq_wait = ctrl->tRCD, |
| 1923 | .data_direction = SSQ_NA, |
| 1924 | }, |
| 1925 | .sp_cmd_addr = { |
| 1926 | .address = 0, |
| 1927 | .rowbits = 6, |
| 1928 | .bank = 0, |
| 1929 | .rank = slotrank, |
| 1930 | }, |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 1931 | }, |
| 1932 | /* DRAM command RD */ |
| 1933 | [2] = { |
Angel Pons | 3abd206 | 2020-05-03 00:25:02 +0200 | [diff] [blame] | 1934 | .sp_cmd_ctrl = { |
| 1935 | .command = IOSAV_RD, |
| 1936 | .ranksel_ap = 3, |
| 1937 | }, |
| 1938 | .subseq_ctrl = { |
| 1939 | .cmd_executions = 1, |
| 1940 | .cmd_delay_gap = 3, |
| 1941 | .post_ssq_wait = ctrl->tRP + |
Angel Pons | ca00dec | 2020-05-02 15:04:00 +0200 | [diff] [blame] | 1942 | ctrl->timings[channel][slotrank].roundtrip_latency + |
Angel Pons | 3abd206 | 2020-05-03 00:25:02 +0200 | [diff] [blame] | 1943 | ctrl->timings[channel][slotrank].io_latency, |
| 1944 | .data_direction = SSQ_RD, |
| 1945 | }, |
| 1946 | .sp_cmd_addr = { |
| 1947 | .address = 8, |
| 1948 | .rowbits = 6, |
| 1949 | .bank = 0, |
| 1950 | .rank = slotrank, |
| 1951 | }, |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 1952 | }, |
| 1953 | }; |
| 1954 | iosav_write_sequence(channel, rd_sequence, ARRAY_SIZE(rd_sequence)); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1955 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 1956 | /* Execute command queue */ |
Angel Pons | 38d901e | 2020-05-02 23:50:43 +0200 | [diff] [blame] | 1957 | iosav_run_once(channel); |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 1958 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1959 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1960 | FOR_ALL_LANES { |
Felix Held | fb19c8a | 2020-01-14 21:27:59 +0100 | [diff] [blame] | 1961 | u64 res = MCHBAR32(lane_base[lane] + GDCRTRAININGRESULT1(channel)); |
Felix Held | 283b4466 | 2020-01-14 21:14:42 +0100 | [diff] [blame] | 1962 | res |= ((u64) MCHBAR32(lane_base[lane] + |
Felix Held | fb19c8a | 2020-01-14 21:27:59 +0100 | [diff] [blame] | 1963 | GDCRTRAININGRESULT2(channel))) << 32; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1964 | old = ctrl->timings[channel][slotrank].lanes[lane].timB; |
| 1965 | ctrl->timings[channel][slotrank].lanes[lane].timB += |
| 1966 | get_timB_high_adjust(res) * 64; |
| 1967 | |
| 1968 | printram("High adjust %d:%016llx\n", lane, res); |
Angel Pons | 891f2bc | 2020-01-10 01:27:28 +0100 | [diff] [blame] | 1969 | printram("Bval+: %d, %d, %d, %x -> %x\n", channel, slotrank, lane, |
| 1970 | old, ctrl->timings[channel][slotrank].lanes[lane].timB); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1971 | } |
| 1972 | } |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 1973 | MCHBAR32(GDCRTRAININGMOD) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1974 | } |
| 1975 | |
Angel Pons | 7d11513 | 2020-11-14 01:44:44 +0100 | [diff] [blame] | 1976 | static void disable_refresh_machine(ramctr_timing *ctrl) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1977 | { |
Angel Pons | 7d11513 | 2020-11-14 01:44:44 +0100 | [diff] [blame] | 1978 | int channel; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1979 | |
Angel Pons | 7d11513 | 2020-11-14 01:44:44 +0100 | [diff] [blame] | 1980 | FOR_ALL_POPULATED_CHANNELS { |
| 1981 | /* choose an existing rank */ |
| 1982 | const int slotrank = !(ctrl->rankmap[channel] & 1) ? 2 : 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1983 | |
Angel Pons | 7d11513 | 2020-11-14 01:44:44 +0100 | [diff] [blame] | 1984 | iosav_write_zqcs_sequence(channel, slotrank, 4, 4, 31); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1985 | |
Angel Pons | 7d11513 | 2020-11-14 01:44:44 +0100 | [diff] [blame] | 1986 | /* Execute command queue */ |
| 1987 | iosav_run_once(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 1988 | |
Angel Pons | 7d11513 | 2020-11-14 01:44:44 +0100 | [diff] [blame] | 1989 | wait_for_iosav(channel); |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 1990 | |
Angel Pons | 7d11513 | 2020-11-14 01:44:44 +0100 | [diff] [blame] | 1991 | MCHBAR32_OR(SCHED_CBIT_ch(channel), 1 << 21); |
| 1992 | } |
| 1993 | |
| 1994 | /* Refresh disable */ |
| 1995 | MCHBAR32_AND(MC_INIT_STATE_G, ~(1 << 3)); |
| 1996 | |
| 1997 | FOR_ALL_POPULATED_CHANNELS { |
| 1998 | /* Execute the same command queue */ |
| 1999 | iosav_run_once(channel); |
| 2000 | |
| 2001 | wait_for_iosav(channel); |
| 2002 | } |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2003 | } |
| 2004 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2005 | /* |
| 2006 | * Compensate the skew between CMD/ADDR/CLK and DQ/DQS lanes. |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2007 | * |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2008 | * Since DDR3 uses a fly-by topology, the data and strobes signals reach the chips at different |
| 2009 | * times with respect to command, address and clock signals. By delaying either all DQ/DQS or |
| 2010 | * all CMD/ADDR/CLK signals, a full phase shift can be introduced. It is assumed that the |
| 2011 | * CLK/ADDR/CMD signals have the same routing delay. |
| 2012 | * |
| 2013 | * To find the required phase shift the DRAM is placed in "write leveling" mode. In this mode, |
| 2014 | * the DRAM-chip samples the CLK on every DQS edge and feeds back the sampled value on the data |
| 2015 | * lanes (DQ). |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2016 | */ |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2017 | int write_training(ramctr_timing *ctrl) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2018 | { |
| 2019 | int channel, slotrank, lane; |
| 2020 | int err; |
| 2021 | |
| 2022 | FOR_ALL_POPULATED_CHANNELS |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 2023 | MCHBAR32_OR(TC_RWP_ch(channel), 1 << 27); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2024 | |
Angel Pons | 7d11513 | 2020-11-14 01:44:44 +0100 | [diff] [blame] | 2025 | disable_refresh_machine(ctrl); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2026 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2027 | /* Enable write leveling on all ranks |
| 2028 | Disable all DQ outputs |
| 2029 | Only NOP is allowed in this mode */ |
| 2030 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS |
| 2031 | write_mrreg(ctrl, channel, slotrank, 1, |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 2032 | make_mr1(ctrl, slotrank, channel) | 1 << 12 | 1 << 7); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2033 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2034 | MCHBAR32(GDCRTRAININGMOD) = 0x108052; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2035 | |
| 2036 | toggle_io_reset(); |
| 2037 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2038 | /* Set any valid value for timB, it gets corrected later */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2039 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS { |
| 2040 | err = discover_timB(ctrl, channel, slotrank); |
| 2041 | if (err) |
| 2042 | return err; |
| 2043 | } |
| 2044 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2045 | /* Disable write leveling on all ranks */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2046 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2047 | write_mrreg(ctrl, channel, slotrank, 1, make_mr1(ctrl, slotrank, channel)); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2048 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2049 | MCHBAR32(GDCRTRAININGMOD) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2050 | |
| 2051 | FOR_ALL_POPULATED_CHANNELS |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2052 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2053 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2054 | /* Refresh enable */ |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 2055 | MCHBAR32_OR(MC_INIT_STATE_G, 1 << 3); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2056 | |
| 2057 | FOR_ALL_POPULATED_CHANNELS { |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 2058 | MCHBAR32_AND(SCHED_CBIT_ch(channel), ~(1 << 21)); |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2059 | MCHBAR32(IOSAV_STATUS_ch(channel)); |
| 2060 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2061 | |
Angel Pons | ffd5015 | 2020-11-12 11:03:10 +0100 | [diff] [blame] | 2062 | iosav_write_zqcs_sequence(channel, 0, 4, 101, 31); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2063 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2064 | /* Execute command queue */ |
Angel Pons | 38d901e | 2020-05-02 23:50:43 +0200 | [diff] [blame] | 2065 | iosav_run_once(channel); |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 2066 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2067 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2068 | } |
| 2069 | |
| 2070 | toggle_io_reset(); |
| 2071 | |
| 2072 | printram("CPE\n"); |
| 2073 | precharge(ctrl); |
| 2074 | printram("CPF\n"); |
| 2075 | |
Angel Pons | 50a6fe7 | 2020-11-14 01:18:14 +0100 | [diff] [blame] | 2076 | FOR_ALL_POPULATED_CHANNELS FOR_ALL_LANES { |
Angel Pons | cf5dd49 | 2020-11-14 01:12:24 +0100 | [diff] [blame] | 2077 | MCHBAR32(IOSAV_By_BW_MASK_ch(channel, lane)) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2078 | } |
| 2079 | |
| 2080 | FOR_ALL_POPULATED_CHANNELS { |
| 2081 | fill_pattern0(ctrl, channel, 0xaaaaaaaa, 0x55555555); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2082 | } |
| 2083 | |
| 2084 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS { |
Angel Pons | 011661c | 2020-11-15 18:21:35 +0100 | [diff] [blame] | 2085 | err = tx_dq_write_leveling(ctrl, channel, slotrank); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2086 | if (err) |
| 2087 | return err; |
| 2088 | } |
| 2089 | |
| 2090 | FOR_ALL_POPULATED_CHANNELS |
| 2091 | program_timings(ctrl, channel); |
| 2092 | |
| 2093 | /* measure and adjust timB timings */ |
Angel Pons | bf13ef0 | 2020-11-11 18:40:06 +0100 | [diff] [blame] | 2094 | train_write_flyby(ctrl); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2095 | |
| 2096 | FOR_ALL_POPULATED_CHANNELS |
| 2097 | program_timings(ctrl, channel); |
| 2098 | |
Angel Pons | 50a6fe7 | 2020-11-14 01:18:14 +0100 | [diff] [blame] | 2099 | FOR_ALL_POPULATED_CHANNELS FOR_ALL_LANES { |
Angel Pons | cf5dd49 | 2020-11-14 01:12:24 +0100 | [diff] [blame] | 2100 | MCHBAR32(IOSAV_By_BW_MASK_ch(channel, lane)) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2101 | } |
| 2102 | return 0; |
| 2103 | } |
| 2104 | |
Angel Pons | bf13ef0 | 2020-11-11 18:40:06 +0100 | [diff] [blame] | 2105 | static int test_command_training(ramctr_timing *ctrl, int channel, int slotrank) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2106 | { |
| 2107 | struct ram_rank_timings saved_rt = ctrl->timings[channel][slotrank]; |
| 2108 | int timC_delta; |
| 2109 | int lanes_ok = 0; |
| 2110 | int ctr = 0; |
| 2111 | int lane; |
| 2112 | |
| 2113 | for (timC_delta = -5; timC_delta <= 5; timC_delta++) { |
| 2114 | FOR_ALL_LANES { |
| 2115 | ctrl->timings[channel][slotrank].lanes[lane].timC = |
| 2116 | saved_rt.lanes[lane].timC + timC_delta; |
| 2117 | } |
| 2118 | program_timings(ctrl, channel); |
| 2119 | FOR_ALL_LANES { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2120 | MCHBAR32(IOSAV_By_ERROR_COUNT(lane)) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2121 | } |
| 2122 | |
Angel Pons | 765d465 | 2020-11-11 14:44:35 +0100 | [diff] [blame] | 2123 | /* Reset read WDB pointer */ |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2124 | MCHBAR32(IOSAV_DATA_CTL_ch(channel)) = 0x1f; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2125 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2126 | wait_for_iosav(channel); |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 2127 | |
Angel Pons | ffd5015 | 2020-11-12 11:03:10 +0100 | [diff] [blame] | 2128 | iosav_write_command_training_sequence(ctrl, channel, slotrank, ctr); |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 2129 | |
| 2130 | /* Program LFSR for the RD/WR subsequences */ |
| 2131 | MCHBAR32(IOSAV_n_ADDRESS_LFSR_ch(channel, 1)) = 0x389abcd; |
| 2132 | MCHBAR32(IOSAV_n_ADDRESS_LFSR_ch(channel, 2)) = 0x389abcd; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2133 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2134 | /* Execute command queue */ |
Angel Pons | 38d901e | 2020-05-02 23:50:43 +0200 | [diff] [blame] | 2135 | iosav_run_once(channel); |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 2136 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2137 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2138 | FOR_ALL_LANES { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2139 | u32 r32 = MCHBAR32(IOSAV_By_ERROR_COUNT_ch(channel, lane)); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2140 | |
| 2141 | if (r32 == 0) |
| 2142 | lanes_ok |= 1 << lane; |
| 2143 | } |
| 2144 | ctr++; |
Patrick Rudolph | dd66287 | 2017-10-28 18:20:11 +0200 | [diff] [blame] | 2145 | if (lanes_ok == ((1 << ctrl->lanes) - 1)) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2146 | break; |
| 2147 | } |
| 2148 | |
| 2149 | ctrl->timings[channel][slotrank] = saved_rt; |
| 2150 | |
Patrick Rudolph | dd66287 | 2017-10-28 18:20:11 +0200 | [diff] [blame] | 2151 | return lanes_ok != ((1 << ctrl->lanes) - 1); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2152 | } |
| 2153 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2154 | static void fill_pattern5(ramctr_timing *ctrl, int channel, int patno) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2155 | { |
Subrata Banik | b1434fc | 2019-03-15 22:20:41 +0530 | [diff] [blame] | 2156 | unsigned int i, j; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2157 | unsigned int offset = get_precedening_channels(ctrl, channel) * 0x40; |
| 2158 | unsigned int step = 0x40 * num_of_channels(ctrl); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2159 | |
| 2160 | if (patno) { |
| 2161 | u8 base8 = 0x80 >> ((patno - 1) % 8); |
| 2162 | u32 base = base8 | (base8 << 8) | (base8 << 16) | (base8 << 24); |
| 2163 | for (i = 0; i < 32; i++) { |
| 2164 | for (j = 0; j < 16; j++) { |
| 2165 | u32 val = use_base[patno - 1][i] & (1 << (j / 2)) ? base : 0; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2166 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2167 | if (invert[patno - 1][i] & (1 << (j / 2))) |
| 2168 | val = ~val; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2169 | |
| 2170 | write32((void *)((1 << 26) + offset + i * step + j * 4), val); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2171 | } |
| 2172 | } |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2173 | } else { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2174 | for (i = 0; i < ARRAY_SIZE(pattern); i++) { |
| 2175 | for (j = 0; j < 16; j++) { |
| 2176 | const u32 val = pattern[i][j]; |
| 2177 | write32((void *)((1 << 26) + offset + i * step + j * 4), val); |
| 2178 | } |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2179 | } |
| 2180 | sfence(); |
| 2181 | } |
Angel Pons | 765d465 | 2020-11-11 14:44:35 +0100 | [diff] [blame] | 2182 | |
| 2183 | program_wdb_pattern_length(channel, 256); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2184 | } |
| 2185 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2186 | static void reprogram_320c(ramctr_timing *ctrl) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2187 | { |
Angel Pons | 7d11513 | 2020-11-14 01:44:44 +0100 | [diff] [blame] | 2188 | disable_refresh_machine(ctrl); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2189 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2190 | /* JEDEC reset */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2191 | dram_jedecreset(ctrl); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2192 | |
| 2193 | /* MRS commands */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2194 | dram_mrscommands(ctrl); |
| 2195 | |
| 2196 | toggle_io_reset(); |
| 2197 | } |
| 2198 | |
Angel Pons | bf13ef0 | 2020-11-11 18:40:06 +0100 | [diff] [blame] | 2199 | #define CT_MIN_PI -127 |
| 2200 | #define CT_MAX_PI 128 |
| 2201 | #define CT_PI_LENGTH (CT_MAX_PI - CT_MIN_PI + 1) |
| 2202 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2203 | #define MIN_C320C_LEN 13 |
| 2204 | |
| 2205 | static int try_cmd_stretch(ramctr_timing *ctrl, int channel, int cmd_stretch) |
| 2206 | { |
| 2207 | struct ram_rank_timings saved_timings[NUM_CHANNELS][NUM_SLOTRANKS]; |
| 2208 | int slotrank; |
Angel Pons | bf13ef0 | 2020-11-11 18:40:06 +0100 | [diff] [blame] | 2209 | int command_pi; |
| 2210 | int stat[NUM_SLOTRANKS][CT_PI_LENGTH]; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2211 | int delta = 0; |
| 2212 | |
| 2213 | printram("Trying cmd_stretch %d on channel %d\n", cmd_stretch, channel); |
| 2214 | |
| 2215 | FOR_ALL_POPULATED_RANKS { |
Angel Pons | 891f2bc | 2020-01-10 01:27:28 +0100 | [diff] [blame] | 2216 | saved_timings[channel][slotrank] = ctrl->timings[channel][slotrank]; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2217 | } |
| 2218 | |
| 2219 | ctrl->cmd_stretch[channel] = cmd_stretch; |
| 2220 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2221 | MCHBAR32(TC_RAP_ch(channel)) = |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2222 | (ctrl->tRRD << 0) |
| 2223 | | (ctrl->tRTP << 4) |
| 2224 | | (ctrl->tCKE << 8) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2225 | | (ctrl->tWTR << 12) |
| 2226 | | (ctrl->tFAW << 16) |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2227 | | (ctrl->tWR << 24) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2228 | | (ctrl->cmd_stretch[channel] << 30); |
| 2229 | |
| 2230 | if (ctrl->cmd_stretch[channel] == 2) |
| 2231 | delta = 2; |
| 2232 | else if (ctrl->cmd_stretch[channel] == 0) |
| 2233 | delta = 4; |
| 2234 | |
| 2235 | FOR_ALL_POPULATED_RANKS { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2236 | ctrl->timings[channel][slotrank].roundtrip_latency -= delta; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2237 | } |
| 2238 | |
Angel Pons | bf13ef0 | 2020-11-11 18:40:06 +0100 | [diff] [blame] | 2239 | for (command_pi = CT_MIN_PI; command_pi < CT_MAX_PI; command_pi++) { |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2240 | FOR_ALL_POPULATED_RANKS { |
Angel Pons | bf13ef0 | 2020-11-11 18:40:06 +0100 | [diff] [blame] | 2241 | ctrl->timings[channel][slotrank].pi_coding = command_pi; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2242 | } |
| 2243 | program_timings(ctrl, channel); |
| 2244 | reprogram_320c(ctrl); |
| 2245 | FOR_ALL_POPULATED_RANKS { |
Angel Pons | bf13ef0 | 2020-11-11 18:40:06 +0100 | [diff] [blame] | 2246 | stat[slotrank][command_pi - CT_MIN_PI] = |
| 2247 | test_command_training(ctrl, channel, slotrank); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2248 | } |
| 2249 | } |
| 2250 | FOR_ALL_POPULATED_RANKS { |
Angel Pons | bf13ef0 | 2020-11-11 18:40:06 +0100 | [diff] [blame] | 2251 | struct run rn = get_longest_zero_run(stat[slotrank], CT_PI_LENGTH - 1); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2252 | |
Angel Pons | bf13ef0 | 2020-11-11 18:40:06 +0100 | [diff] [blame] | 2253 | ctrl->timings[channel][slotrank].pi_coding = rn.middle + CT_MIN_PI; |
Patrick Rudolph | 368b615 | 2016-11-25 16:36:52 +0100 | [diff] [blame] | 2254 | printram("cmd_stretch: %d, %d: 0x%02x-0x%02x-0x%02x\n", |
| 2255 | channel, slotrank, rn.start, rn.middle, rn.end); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2256 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2257 | if (rn.all || rn.length < MIN_C320C_LEN) { |
| 2258 | FOR_ALL_POPULATED_RANKS { |
| 2259 | ctrl->timings[channel][slotrank] = |
| 2260 | saved_timings[channel][slotrank]; |
| 2261 | } |
| 2262 | return MAKE_ERR; |
| 2263 | } |
| 2264 | } |
| 2265 | |
| 2266 | return 0; |
| 2267 | } |
| 2268 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2269 | /* |
| 2270 | * Adjust CMD phase shift and try multiple command rates. |
| 2271 | * A command rate of 2T doubles the time needed for address and command decode. |
| 2272 | */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2273 | int command_training(ramctr_timing *ctrl) |
| 2274 | { |
| 2275 | int channel; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2276 | |
| 2277 | FOR_ALL_POPULATED_CHANNELS { |
| 2278 | fill_pattern5(ctrl, channel, 0); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2279 | } |
| 2280 | |
| 2281 | FOR_ALL_POPULATED_CHANNELS { |
Patrick Rudolph | 58d16af | 2017-06-19 19:33:12 +0200 | [diff] [blame] | 2282 | int cmdrate, err; |
| 2283 | |
| 2284 | /* |
| 2285 | * Dual DIMM per channel: |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2286 | * Issue: |
| 2287 | * While c320c discovery seems to succeed raminit will fail in write training. |
| 2288 | * |
| 2289 | * Workaround: |
| 2290 | * Skip 1T in dual DIMM mode, that's only supported by a few DIMMs. |
| 2291 | * Only try 1T mode for XMP DIMMs that request it in dual DIMM mode. |
Patrick Rudolph | 58d16af | 2017-06-19 19:33:12 +0200 | [diff] [blame] | 2292 | * |
| 2293 | * Single DIMM per channel: |
| 2294 | * Try command rate 1T and 2T |
| 2295 | */ |
| 2296 | cmdrate = ((ctrl->rankmap[channel] & 0x5) == 0x5); |
Dan Elkouby | dabebc3 | 2018-04-13 18:47:10 +0300 | [diff] [blame] | 2297 | if (ctrl->tCMD) |
| 2298 | /* XMP gives the CMD rate in clock ticks, not ns */ |
| 2299 | cmdrate = MIN(DIV_ROUND_UP(ctrl->tCMD, 256) - 1, 1); |
Patrick Rudolph | 58d16af | 2017-06-19 19:33:12 +0200 | [diff] [blame] | 2300 | |
Elyes HAOUAS | adda3f81 | 2018-01-31 23:02:35 +0100 | [diff] [blame] | 2301 | for (; cmdrate < 2; cmdrate++) { |
Patrick Rudolph | 58d16af | 2017-06-19 19:33:12 +0200 | [diff] [blame] | 2302 | err = try_cmd_stretch(ctrl, channel, cmdrate << 1); |
| 2303 | |
| 2304 | if (!err) |
| 2305 | break; |
| 2306 | } |
| 2307 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2308 | if (err) { |
Patrick Rudolph | 58d16af | 2017-06-19 19:33:12 +0200 | [diff] [blame] | 2309 | printk(BIOS_EMERG, "c320c discovery failed\n"); |
| 2310 | return err; |
| 2311 | } |
| 2312 | |
Angel Pons | 891f2bc | 2020-01-10 01:27:28 +0100 | [diff] [blame] | 2313 | printram("Using CMD rate %uT on channel %u\n", cmdrate + 1, channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2314 | } |
| 2315 | |
| 2316 | FOR_ALL_POPULATED_CHANNELS |
Angel Pons | fd9a8b6 | 2020-11-13 13:56:30 +0100 | [diff] [blame] | 2317 | program_timings(ctrl, channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2318 | |
| 2319 | reprogram_320c(ctrl); |
| 2320 | return 0; |
| 2321 | } |
| 2322 | |
Angel Pons | 4c79f93 | 2020-11-14 01:26:52 +0100 | [diff] [blame] | 2323 | static int find_read_mpr_margin(ramctr_timing *ctrl, int channel, int slotrank, int *edges) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2324 | { |
Angel Pons | 96a06dd | 2020-11-14 00:33:18 +0100 | [diff] [blame] | 2325 | int dqs_pi; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2326 | int stats[NUM_LANES][MAX_EDGE_TIMING + 1]; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2327 | int lane; |
| 2328 | |
Angel Pons | 96a06dd | 2020-11-14 00:33:18 +0100 | [diff] [blame] | 2329 | for (dqs_pi = 0; dqs_pi <= MAX_EDGE_TIMING; dqs_pi++) { |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2330 | FOR_ALL_LANES { |
Angel Pons | 96a06dd | 2020-11-14 00:33:18 +0100 | [diff] [blame] | 2331 | ctrl->timings[channel][slotrank].lanes[lane].rising = dqs_pi; |
| 2332 | ctrl->timings[channel][slotrank].lanes[lane].falling = dqs_pi; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2333 | } |
| 2334 | program_timings(ctrl, channel); |
| 2335 | |
| 2336 | FOR_ALL_LANES { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2337 | MCHBAR32(IOSAV_By_ERROR_COUNT_ch(channel, lane)) = 0; |
| 2338 | MCHBAR32(IOSAV_By_BW_SERROR_C_ch(channel, lane)); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2339 | } |
| 2340 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2341 | wait_for_iosav(channel); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2342 | |
Angel Pons | ffd5015 | 2020-11-12 11:03:10 +0100 | [diff] [blame] | 2343 | iosav_write_read_mpr_sequence( |
| 2344 | channel, slotrank, ctrl->tMOD, 500, 4, 1, ctrl->CAS + 8); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2345 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2346 | /* Execute command queue */ |
Angel Pons | 38d901e | 2020-05-02 23:50:43 +0200 | [diff] [blame] | 2347 | iosav_run_once(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2348 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2349 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2350 | |
| 2351 | FOR_ALL_LANES { |
Angel Pons | 96a06dd | 2020-11-14 00:33:18 +0100 | [diff] [blame] | 2352 | stats[lane][dqs_pi] = MCHBAR32(IOSAV_By_ERROR_COUNT_ch(channel, lane)); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2353 | } |
| 2354 | } |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2355 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2356 | FOR_ALL_LANES { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2357 | struct run rn = get_longest_zero_run(stats[lane], MAX_EDGE_TIMING + 1); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2358 | edges[lane] = rn.middle; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2359 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2360 | if (rn.all) { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2361 | printk(BIOS_EMERG, "edge discovery failed: %d, %d, %d\n", channel, |
| 2362 | slotrank, lane); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2363 | return MAKE_ERR; |
| 2364 | } |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2365 | printram("eval %d, %d, %d: %02x\n", channel, slotrank, lane, edges[lane]); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2366 | } |
| 2367 | return 0; |
| 2368 | } |
| 2369 | |
Angel Pons | 60971dc | 2020-11-14 00:49:38 +0100 | [diff] [blame] | 2370 | static void find_predefined_pattern(ramctr_timing *ctrl, const int channel) |
| 2371 | { |
| 2372 | int slotrank, lane; |
| 2373 | |
| 2374 | fill_pattern0(ctrl, channel, 0, 0); |
| 2375 | FOR_ALL_LANES { |
| 2376 | MCHBAR32(IOSAV_By_BW_SERROR_C_ch(channel, lane)); |
| 2377 | } |
| 2378 | |
| 2379 | FOR_ALL_POPULATED_RANKS FOR_ALL_LANES { |
| 2380 | ctrl->timings[channel][slotrank].lanes[lane].falling = 16; |
| 2381 | ctrl->timings[channel][slotrank].lanes[lane].rising = 16; |
| 2382 | } |
| 2383 | |
| 2384 | program_timings(ctrl, channel); |
| 2385 | |
| 2386 | FOR_ALL_POPULATED_RANKS { |
| 2387 | wait_for_iosav(channel); |
| 2388 | |
| 2389 | iosav_write_read_mpr_sequence( |
| 2390 | channel, slotrank, ctrl->tMOD, 3, 4, 1, ctrl->CAS + 8); |
| 2391 | |
| 2392 | /* Execute command queue */ |
| 2393 | iosav_run_once(channel); |
| 2394 | |
| 2395 | wait_for_iosav(channel); |
| 2396 | } |
| 2397 | |
| 2398 | /* XXX: check any measured value ? */ |
| 2399 | |
| 2400 | FOR_ALL_POPULATED_RANKS FOR_ALL_LANES { |
| 2401 | ctrl->timings[channel][slotrank].lanes[lane].falling = 48; |
| 2402 | ctrl->timings[channel][slotrank].lanes[lane].rising = 48; |
| 2403 | } |
| 2404 | |
| 2405 | program_timings(ctrl, channel); |
| 2406 | |
| 2407 | FOR_ALL_POPULATED_RANKS { |
| 2408 | wait_for_iosav(channel); |
| 2409 | |
| 2410 | iosav_write_read_mpr_sequence( |
| 2411 | channel, slotrank, ctrl->tMOD, 3, 4, 1, ctrl->CAS + 8); |
| 2412 | |
| 2413 | /* Execute command queue */ |
| 2414 | iosav_run_once(channel); |
| 2415 | |
| 2416 | wait_for_iosav(channel); |
| 2417 | } |
| 2418 | |
| 2419 | /* XXX: check any measured value ? */ |
| 2420 | |
| 2421 | FOR_ALL_LANES { |
| 2422 | MCHBAR32(IOSAV_By_BW_MASK_ch(channel, lane)) = |
| 2423 | ~MCHBAR32(IOSAV_By_BW_SERROR_ch(channel, lane)) & 0xff; |
| 2424 | } |
| 2425 | } |
| 2426 | |
Angel Pons | 4c79f93 | 2020-11-14 01:26:52 +0100 | [diff] [blame] | 2427 | int read_mpr_training(ramctr_timing *ctrl) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2428 | { |
| 2429 | int falling_edges[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES]; |
| 2430 | int rising_edges[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES]; |
| 2431 | int channel, slotrank, lane; |
| 2432 | int err; |
| 2433 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2434 | MCHBAR32(GDCRTRAININGMOD) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2435 | |
| 2436 | toggle_io_reset(); |
| 2437 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2438 | FOR_ALL_POPULATED_CHANNELS { |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2439 | FOR_ALL_LANES { |
Angel Pons | 60971dc | 2020-11-14 00:49:38 +0100 | [diff] [blame] | 2440 | MCHBAR32(IOSAV_By_BW_MASK_ch(channel, lane)) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2441 | } |
| 2442 | |
Angel Pons | 60971dc | 2020-11-14 00:49:38 +0100 | [diff] [blame] | 2443 | find_predefined_pattern(ctrl, channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2444 | |
| 2445 | fill_pattern0(ctrl, channel, 0, 0xffffffff); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2446 | } |
| 2447 | |
Angel Pons | 0c3936e | 2020-03-22 12:49:27 +0100 | [diff] [blame] | 2448 | /* |
| 2449 | * FIXME: Under some conditions, vendor BIOS sets both edges to the same value. It will |
| 2450 | * also use a single loop. It would seem that it is a debugging configuration. |
| 2451 | */ |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2452 | MCHBAR32(IOSAV_DC_MASK) = 0x300; |
| 2453 | printram("discover falling edges:\n[%x] = %x\n", IOSAV_DC_MASK, 0x300); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2454 | |
| 2455 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS { |
Angel Pons | 4c79f93 | 2020-11-14 01:26:52 +0100 | [diff] [blame] | 2456 | err = find_read_mpr_margin(ctrl, channel, slotrank, |
Felix Held | 2bb3cdf | 2018-07-28 00:23:59 +0200 | [diff] [blame] | 2457 | falling_edges[channel][slotrank]); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2458 | if (err) |
| 2459 | return err; |
| 2460 | } |
| 2461 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2462 | MCHBAR32(IOSAV_DC_MASK) = 0x200; |
| 2463 | printram("discover rising edges:\n[%x] = %x\n", IOSAV_DC_MASK, 0x200); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2464 | |
| 2465 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS { |
Angel Pons | 4c79f93 | 2020-11-14 01:26:52 +0100 | [diff] [blame] | 2466 | err = find_read_mpr_margin(ctrl, channel, slotrank, |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2467 | rising_edges[channel][slotrank]); |
| 2468 | if (err) |
| 2469 | return err; |
| 2470 | } |
| 2471 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2472 | MCHBAR32(IOSAV_DC_MASK) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2473 | |
| 2474 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS FOR_ALL_LANES { |
| 2475 | ctrl->timings[channel][slotrank].lanes[lane].falling = |
| 2476 | falling_edges[channel][slotrank][lane]; |
| 2477 | ctrl->timings[channel][slotrank].lanes[lane].rising = |
| 2478 | rising_edges[channel][slotrank][lane]; |
| 2479 | } |
| 2480 | |
| 2481 | FOR_ALL_POPULATED_CHANNELS { |
| 2482 | program_timings(ctrl, channel); |
| 2483 | } |
| 2484 | |
Angel Pons | 50a6fe7 | 2020-11-14 01:18:14 +0100 | [diff] [blame] | 2485 | FOR_ALL_POPULATED_CHANNELS FOR_ALL_LANES { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2486 | MCHBAR32(IOSAV_By_BW_MASK_ch(channel, lane)) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2487 | } |
| 2488 | return 0; |
| 2489 | } |
| 2490 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2491 | static int discover_edges_write_real(ramctr_timing *ctrl, int channel, int slotrank, int *edges) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2492 | { |
| 2493 | int edge; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2494 | u32 raw_stats[MAX_EDGE_TIMING + 1]; |
| 2495 | int stats[MAX_EDGE_TIMING + 1]; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2496 | const int reg3000b24[] = { 0, 0xc, 0x2c }; |
| 2497 | int lane, i; |
| 2498 | int lower[NUM_LANES]; |
| 2499 | int upper[NUM_LANES]; |
| 2500 | int pat; |
| 2501 | |
| 2502 | FOR_ALL_LANES { |
| 2503 | lower[lane] = 0; |
| 2504 | upper[lane] = MAX_EDGE_TIMING; |
| 2505 | } |
| 2506 | |
| 2507 | for (i = 0; i < 3; i++) { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2508 | MCHBAR32(GDCRTRAININGMOD_ch(channel)) = reg3000b24[i] << 24; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2509 | printram("[%x] = 0x%08x\n", GDCRTRAININGMOD_ch(channel), reg3000b24[i] << 24); |
| 2510 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2511 | for (pat = 0; pat < NUM_PATTERNS; pat++) { |
| 2512 | fill_pattern5(ctrl, channel, pat); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2513 | printram("using pattern %d\n", pat); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2514 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2515 | for (edge = 0; edge <= MAX_EDGE_TIMING; edge++) { |
| 2516 | FOR_ALL_LANES { |
| 2517 | ctrl->timings[channel][slotrank].lanes[lane]. |
| 2518 | rising = edge; |
| 2519 | ctrl->timings[channel][slotrank].lanes[lane]. |
| 2520 | falling = edge; |
| 2521 | } |
| 2522 | program_timings(ctrl, channel); |
| 2523 | |
| 2524 | FOR_ALL_LANES { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2525 | MCHBAR32(IOSAV_By_ERROR_COUNT_ch(channel, lane)) = 0; |
| 2526 | MCHBAR32(IOSAV_By_BW_SERROR_C_ch(channel, lane)); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2527 | } |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2528 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2529 | |
Angel Pons | ffd5015 | 2020-11-12 11:03:10 +0100 | [diff] [blame] | 2530 | iosav_write_data_write_sequence(ctrl, channel, slotrank); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2531 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2532 | /* Execute command queue */ |
Angel Pons | 38d901e | 2020-05-02 23:50:43 +0200 | [diff] [blame] | 2533 | iosav_run_once(channel); |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 2534 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2535 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2536 | FOR_ALL_LANES { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2537 | MCHBAR32(IOSAV_By_ERROR_COUNT_ch(channel, lane)); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2538 | } |
| 2539 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2540 | /* FIXME: This register only exists on Ivy Bridge */ |
Angel Pons | 098240eb | 2020-03-22 12:55:32 +0100 | [diff] [blame] | 2541 | raw_stats[edge] = MCHBAR32(IOSAV_BYTE_SERROR_C_ch(channel)); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2542 | } |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2543 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2544 | FOR_ALL_LANES { |
| 2545 | struct run rn; |
| 2546 | for (edge = 0; edge <= MAX_EDGE_TIMING; edge++) |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2547 | stats[edge] = !!(raw_stats[edge] & (1 << lane)); |
| 2548 | |
| 2549 | rn = get_longest_zero_run(stats, MAX_EDGE_TIMING + 1); |
| 2550 | |
| 2551 | printram("edges: %d, %d, %d: 0x%02x-0x%02x-0x%02x, " |
| 2552 | "0x%02x-0x%02x\n", channel, slotrank, i, rn.start, |
| 2553 | rn.middle, rn.end, rn.start + ctrl->edge_offset[i], |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2554 | rn.end - ctrl->edge_offset[i]); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2555 | |
| 2556 | lower[lane] = MAX(rn.start + ctrl->edge_offset[i], lower[lane]); |
| 2557 | upper[lane] = MIN(rn.end - ctrl->edge_offset[i], upper[lane]); |
| 2558 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2559 | edges[lane] = (lower[lane] + upper[lane]) / 2; |
| 2560 | if (rn.all || (lower[lane] > upper[lane])) { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2561 | printk(BIOS_EMERG, "edge write discovery failed: " |
| 2562 | "%d, %d, %d\n", channel, slotrank, lane); |
| 2563 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2564 | return MAKE_ERR; |
| 2565 | } |
| 2566 | } |
| 2567 | } |
| 2568 | } |
| 2569 | |
Angel Pons | a93f46e | 2020-11-17 16:54:01 +0100 | [diff] [blame] | 2570 | /* Restore nominal Vref after training */ |
| 2571 | MCHBAR32(GDCRTRAININGMOD_ch(channel)) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2572 | printram("CPA\n"); |
| 2573 | return 0; |
| 2574 | } |
| 2575 | |
| 2576 | int discover_edges_write(ramctr_timing *ctrl) |
| 2577 | { |
| 2578 | int falling_edges[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES]; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2579 | int rising_edges[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES]; |
| 2580 | int channel, slotrank, lane, err; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2581 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2582 | /* |
| 2583 | * FIXME: Under some conditions, vendor BIOS sets both edges to the same value. It will |
| 2584 | * also use a single loop. It would seem that it is a debugging configuration. |
| 2585 | */ |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2586 | MCHBAR32(IOSAV_DC_MASK) = 0x300; |
| 2587 | printram("discover falling edges write:\n[%x] = %x\n", IOSAV_DC_MASK, 0x300); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2588 | |
| 2589 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS { |
| 2590 | err = discover_edges_write_real(ctrl, channel, slotrank, |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2591 | falling_edges[channel][slotrank]); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2592 | if (err) |
| 2593 | return err; |
| 2594 | } |
| 2595 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2596 | MCHBAR32(IOSAV_DC_MASK) = 0x200; |
| 2597 | printram("discover rising edges write:\n[%x] = %x\n", IOSAV_DC_MASK, 0x200); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2598 | |
| 2599 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS { |
| 2600 | err = discover_edges_write_real(ctrl, channel, slotrank, |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2601 | rising_edges[channel][slotrank]); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2602 | if (err) |
| 2603 | return err; |
| 2604 | } |
| 2605 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2606 | MCHBAR32(IOSAV_DC_MASK) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2607 | |
| 2608 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS FOR_ALL_LANES { |
| 2609 | ctrl->timings[channel][slotrank].lanes[lane].falling = |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2610 | falling_edges[channel][slotrank][lane]; |
| 2611 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2612 | ctrl->timings[channel][slotrank].lanes[lane].rising = |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2613 | rising_edges[channel][slotrank][lane]; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2614 | } |
| 2615 | |
| 2616 | FOR_ALL_POPULATED_CHANNELS |
| 2617 | program_timings(ctrl, channel); |
| 2618 | |
Angel Pons | 50a6fe7 | 2020-11-14 01:18:14 +0100 | [diff] [blame] | 2619 | FOR_ALL_POPULATED_CHANNELS FOR_ALL_LANES { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2620 | MCHBAR32(IOSAV_By_BW_MASK_ch(channel, lane)) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2621 | } |
| 2622 | return 0; |
| 2623 | } |
| 2624 | |
| 2625 | static void test_timC_write(ramctr_timing *ctrl, int channel, int slotrank) |
| 2626 | { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2627 | wait_for_iosav(channel); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2628 | |
Angel Pons | ffd5015 | 2020-11-12 11:03:10 +0100 | [diff] [blame] | 2629 | iosav_write_aggressive_write_read_sequence(ctrl, channel, slotrank); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2630 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2631 | /* Execute command queue */ |
Angel Pons | 38d901e | 2020-05-02 23:50:43 +0200 | [diff] [blame] | 2632 | iosav_run_once(channel); |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 2633 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2634 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2635 | } |
| 2636 | |
| 2637 | int discover_timC_write(ramctr_timing *ctrl) |
| 2638 | { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2639 | const u8 rege3c_b24[3] = { 0, 0x0f, 0x2f }; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2640 | int i, pat; |
| 2641 | |
| 2642 | int lower[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES]; |
| 2643 | int upper[NUM_CHANNELS][NUM_SLOTRANKS][NUM_LANES]; |
| 2644 | int channel, slotrank, lane; |
| 2645 | |
| 2646 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS FOR_ALL_LANES { |
| 2647 | lower[channel][slotrank][lane] = 0; |
| 2648 | upper[channel][slotrank][lane] = MAX_TIMC; |
| 2649 | } |
| 2650 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2651 | /* |
| 2652 | * Enable IOSAV_n_SPECIAL_COMMAND_ADDR optimization. |
| 2653 | * FIXME: This must only be done on Ivy Bridge. |
| 2654 | */ |
| 2655 | MCHBAR32(MCMNTS_SPARE) = 1; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2656 | printram("discover timC write:\n"); |
| 2657 | |
| 2658 | for (i = 0; i < 3; i++) |
| 2659 | FOR_ALL_POPULATED_CHANNELS { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2660 | |
| 2661 | /* FIXME: Setting the Write VREF must only be done on Ivy Bridge */ |
| 2662 | MCHBAR32_AND_OR(GDCRCMDDEBUGMUXCFG_Cz_S(channel), |
| 2663 | ~0x3f000000, rege3c_b24[i] << 24); |
| 2664 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2665 | udelay(2); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2666 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2667 | for (pat = 0; pat < NUM_PATTERNS; pat++) { |
| 2668 | FOR_ALL_POPULATED_RANKS { |
| 2669 | int timC; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2670 | u32 raw_stats[MAX_TIMC + 1]; |
| 2671 | int stats[MAX_TIMC + 1]; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2672 | |
| 2673 | /* Make sure rn.start < rn.end */ |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2674 | stats[MAX_TIMC] = 1; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2675 | |
| 2676 | fill_pattern5(ctrl, channel, pat); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2677 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2678 | for (timC = 0; timC < MAX_TIMC; timC++) { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2679 | FOR_ALL_LANES { |
| 2680 | ctrl->timings[channel][slotrank] |
| 2681 | .lanes[lane].timC = timC; |
| 2682 | } |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2683 | program_timings(ctrl, channel); |
| 2684 | |
| 2685 | test_timC_write (ctrl, channel, slotrank); |
| 2686 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2687 | /* FIXME: Another IVB-only register! */ |
Angel Pons | 098240eb | 2020-03-22 12:55:32 +0100 | [diff] [blame] | 2688 | raw_stats[timC] = MCHBAR32( |
| 2689 | IOSAV_BYTE_SERROR_C_ch(channel)); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2690 | } |
| 2691 | FOR_ALL_LANES { |
| 2692 | struct run rn; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2693 | for (timC = 0; timC < MAX_TIMC; timC++) { |
| 2694 | stats[timC] = !!(raw_stats[timC] |
| 2695 | & (1 << lane)); |
| 2696 | } |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2697 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2698 | rn = get_longest_zero_run(stats, MAX_TIMC + 1); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2699 | if (rn.all) { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2700 | printk(BIOS_EMERG, |
| 2701 | "timC write discovery failed: " |
| 2702 | "%d, %d, %d\n", channel, |
| 2703 | slotrank, lane); |
| 2704 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2705 | return MAKE_ERR; |
| 2706 | } |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2707 | printram("timC: %d, %d, %d: " |
| 2708 | "0x%02x-0x%02x-0x%02x, " |
| 2709 | "0x%02x-0x%02x\n", channel, slotrank, |
| 2710 | i, rn.start, rn.middle, rn.end, |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2711 | rn.start + ctrl->timC_offset[i], |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2712 | rn.end - ctrl->timC_offset[i]); |
| 2713 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2714 | lower[channel][slotrank][lane] = |
Elyes HAOUAS | f97c1c9 | 2019-12-03 18:22:06 +0100 | [diff] [blame] | 2715 | MAX(rn.start + ctrl->timC_offset[i], |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2716 | lower[channel][slotrank][lane]); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2717 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2718 | upper[channel][slotrank][lane] = |
Elyes HAOUAS | f97c1c9 | 2019-12-03 18:22:06 +0100 | [diff] [blame] | 2719 | MIN(rn.end - ctrl->timC_offset[i], |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2720 | upper[channel][slotrank][lane]); |
| 2721 | |
| 2722 | } |
| 2723 | } |
| 2724 | } |
| 2725 | } |
| 2726 | |
| 2727 | FOR_ALL_CHANNELS { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2728 | /* FIXME: Setting the Write VREF must only be done on Ivy Bridge */ |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2729 | MCHBAR32_AND(GDCRCMDDEBUGMUXCFG_Cz_S(channel), ~0x3f000000); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2730 | udelay(2); |
| 2731 | } |
| 2732 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2733 | /* |
| 2734 | * Disable IOSAV_n_SPECIAL_COMMAND_ADDR optimization. |
| 2735 | * FIXME: This must only be done on Ivy Bridge. |
| 2736 | */ |
| 2737 | MCHBAR32(MCMNTS_SPARE) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2738 | |
| 2739 | printram("CPB\n"); |
| 2740 | |
| 2741 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS FOR_ALL_LANES { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2742 | printram("timC %d, %d, %d: %x\n", channel, slotrank, lane, |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2743 | (lower[channel][slotrank][lane] + |
| 2744 | upper[channel][slotrank][lane]) / 2); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2745 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2746 | ctrl->timings[channel][slotrank].lanes[lane].timC = |
| 2747 | (lower[channel][slotrank][lane] + |
| 2748 | upper[channel][slotrank][lane]) / 2; |
| 2749 | } |
| 2750 | FOR_ALL_POPULATED_CHANNELS { |
| 2751 | program_timings(ctrl, channel); |
| 2752 | } |
| 2753 | return 0; |
| 2754 | } |
| 2755 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2756 | void normalize_training(ramctr_timing *ctrl) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2757 | { |
| 2758 | int channel, slotrank, lane; |
Patrick Rudolph | 3c8cb97 | 2016-11-25 16:00:01 +0100 | [diff] [blame] | 2759 | int mat; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2760 | |
| 2761 | FOR_ALL_CHANNELS FOR_ALL_POPULATED_RANKS { |
| 2762 | int delta; |
Patrick Rudolph | 3c8cb97 | 2016-11-25 16:00:01 +0100 | [diff] [blame] | 2763 | mat = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2764 | FOR_ALL_LANES mat = |
Elyes HAOUAS | f97c1c9 | 2019-12-03 18:22:06 +0100 | [diff] [blame] | 2765 | MAX(ctrl->timings[channel][slotrank].lanes[lane].timA, mat); |
Patrick Rudolph | 413edc8 | 2016-11-25 15:40:07 +0100 | [diff] [blame] | 2766 | printram("normalize %d, %d, %d: mat %d\n", |
| 2767 | channel, slotrank, lane, mat); |
| 2768 | |
Felix Held | ef4fe3e | 2019-12-31 14:15:05 +0100 | [diff] [blame] | 2769 | delta = (mat >> 6) - ctrl->timings[channel][slotrank].io_latency; |
Patrick Rudolph | 413edc8 | 2016-11-25 15:40:07 +0100 | [diff] [blame] | 2770 | printram("normalize %d, %d, %d: delta %d\n", |
| 2771 | channel, slotrank, lane, delta); |
| 2772 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2773 | ctrl->timings[channel][slotrank].roundtrip_latency += delta; |
Felix Held | ef4fe3e | 2019-12-31 14:15:05 +0100 | [diff] [blame] | 2774 | ctrl->timings[channel][slotrank].io_latency += delta; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2775 | } |
| 2776 | |
| 2777 | FOR_ALL_POPULATED_CHANNELS { |
| 2778 | program_timings(ctrl, channel); |
| 2779 | } |
| 2780 | } |
| 2781 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2782 | int channel_test(ramctr_timing *ctrl) |
| 2783 | { |
| 2784 | int channel, slotrank, lane; |
| 2785 | |
| 2786 | slotrank = 0; |
| 2787 | FOR_ALL_POPULATED_CHANNELS |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2788 | if (MCHBAR32(MC_INIT_STATE_ch(channel)) & 0xa000) { |
Angel Pons | 891f2bc | 2020-01-10 01:27:28 +0100 | [diff] [blame] | 2789 | printk(BIOS_EMERG, "Mini channel test failed (1): %d\n", channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2790 | return MAKE_ERR; |
| 2791 | } |
| 2792 | FOR_ALL_POPULATED_CHANNELS { |
| 2793 | fill_pattern0(ctrl, channel, 0x12345678, 0x98765432); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2794 | } |
| 2795 | |
| 2796 | for (slotrank = 0; slotrank < 4; slotrank++) |
| 2797 | FOR_ALL_CHANNELS |
| 2798 | if (ctrl->rankmap[channel] & (1 << slotrank)) { |
| 2799 | FOR_ALL_LANES { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2800 | MCHBAR32(IOSAV_By_ERROR_COUNT(lane)) = 0; |
| 2801 | MCHBAR32(IOSAV_By_BW_SERROR_C(lane)) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2802 | } |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2803 | wait_for_iosav(channel); |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 2804 | |
Angel Pons | ffd5015 | 2020-11-12 11:03:10 +0100 | [diff] [blame] | 2805 | iosav_write_memory_test_sequence(ctrl, channel, slotrank); |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 2806 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2807 | /* Execute command queue */ |
Angel Pons | 38d901e | 2020-05-02 23:50:43 +0200 | [diff] [blame] | 2808 | iosav_run_once(channel); |
Felix Held | 9cf1dd2 | 2018-07-31 14:52:40 +0200 | [diff] [blame] | 2809 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2810 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2811 | FOR_ALL_LANES |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2812 | if (MCHBAR32(IOSAV_By_ERROR_COUNT_ch(channel, lane))) { |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2813 | printk(BIOS_EMERG, "Mini channel test failed (2): %d, %d, %d\n", |
| 2814 | channel, slotrank, lane); |
| 2815 | return MAKE_ERR; |
| 2816 | } |
| 2817 | } |
| 2818 | return 0; |
| 2819 | } |
| 2820 | |
Patrick Rudolph | dd66287 | 2017-10-28 18:20:11 +0200 | [diff] [blame] | 2821 | void channel_scrub(ramctr_timing *ctrl) |
| 2822 | { |
| 2823 | int channel, slotrank, row, rowsize; |
Patrick Rudolph | b5fa9c8 | 2020-05-01 18:35:05 +0200 | [diff] [blame] | 2824 | u8 bank; |
Patrick Rudolph | dd66287 | 2017-10-28 18:20:11 +0200 | [diff] [blame] | 2825 | |
Patrick Rudolph | b5fa9c8 | 2020-05-01 18:35:05 +0200 | [diff] [blame] | 2826 | FOR_ALL_POPULATED_CHANNELS { |
| 2827 | wait_for_iosav(channel); |
| 2828 | fill_pattern0(ctrl, channel, 0, 0); |
Patrick Rudolph | b5fa9c8 | 2020-05-01 18:35:05 +0200 | [diff] [blame] | 2829 | } |
| 2830 | |
| 2831 | /* |
| 2832 | * During runtime the "scrubber" will periodically scan through the memory in the |
| 2833 | * physical address space, to identify and fix CRC errors. |
| 2834 | * The following loops writes to every DRAM address, setting the ECC bits to the |
| 2835 | * correct value. A read from this location will no longer return a CRC error, |
| 2836 | * except when a bit has toggled due to external events. |
Angel Pons | 3b9d3e9 | 2020-11-11 19:10:39 +0100 | [diff] [blame] | 2837 | * The same could be achieved by writing to the physical memory map, but it's |
Patrick Rudolph | b5fa9c8 | 2020-05-01 18:35:05 +0200 | [diff] [blame] | 2838 | * much more difficult due to SMM remapping, ME stolen memory, GFX stolen memory, |
| 2839 | * and firmware running in x86_32. |
| 2840 | */ |
Patrick Rudolph | dd66287 | 2017-10-28 18:20:11 +0200 | [diff] [blame] | 2841 | FOR_ALL_POPULATED_CHANNELS FOR_ALL_POPULATED_RANKS { |
| 2842 | rowsize = 1 << ctrl->info.dimm[channel][slotrank >> 1].row_bits; |
Patrick Rudolph | b5fa9c8 | 2020-05-01 18:35:05 +0200 | [diff] [blame] | 2843 | for (bank = 0; bank < 8; bank++) { |
| 2844 | for (row = 0; row < rowsize; row += 16) { |
Patrick Rudolph | dd66287 | 2017-10-28 18:20:11 +0200 | [diff] [blame] | 2845 | |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 2846 | u8 gap = MAX((ctrl->tFAW >> 2) + 1, ctrl->tRRD); |
| 2847 | const struct iosav_ssq sequence[] = { |
| 2848 | /* |
| 2849 | * DRAM command ACT |
| 2850 | * Opens the row for writing. |
| 2851 | */ |
| 2852 | [0] = { |
Patrick Rudolph | b5fa9c8 | 2020-05-01 18:35:05 +0200 | [diff] [blame] | 2853 | .sp_cmd_ctrl = { |
| 2854 | .command = IOSAV_ACT, |
| 2855 | .ranksel_ap = 1, |
| 2856 | }, |
| 2857 | .subseq_ctrl = { |
| 2858 | .cmd_executions = 1, |
| 2859 | .cmd_delay_gap = gap, |
| 2860 | .post_ssq_wait = ctrl->tRCD, |
| 2861 | .data_direction = SSQ_NA, |
| 2862 | }, |
| 2863 | .sp_cmd_addr = { |
| 2864 | .address = row, |
| 2865 | .rowbits = 6, |
| 2866 | .bank = bank, |
| 2867 | .rank = slotrank, |
| 2868 | }, |
| 2869 | .addr_update = { |
| 2870 | .inc_addr_1 = 1, |
| 2871 | .addr_wrap = 18, |
| 2872 | }, |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 2873 | }, |
| 2874 | /* |
| 2875 | * DRAM command WR |
| 2876 | * Writes (128 + 1) * 8 (burst length) * 8 (bus width) |
| 2877 | * bytes. |
| 2878 | */ |
| 2879 | [1] = { |
Patrick Rudolph | b5fa9c8 | 2020-05-01 18:35:05 +0200 | [diff] [blame] | 2880 | .sp_cmd_ctrl = { |
| 2881 | .command = IOSAV_WR, |
| 2882 | .ranksel_ap = 1, |
| 2883 | }, |
| 2884 | .subseq_ctrl = { |
| 2885 | .cmd_executions = 129, |
| 2886 | .cmd_delay_gap = 4, |
| 2887 | .post_ssq_wait = ctrl->tWTR + |
| 2888 | ctrl->CWL + 8, |
| 2889 | .data_direction = SSQ_WR, |
| 2890 | }, |
| 2891 | .sp_cmd_addr = { |
| 2892 | .address = row, |
| 2893 | .rowbits = 0, |
| 2894 | .bank = bank, |
| 2895 | .rank = slotrank, |
| 2896 | }, |
| 2897 | .addr_update = { |
| 2898 | .inc_addr_8 = 1, |
| 2899 | .addr_wrap = 9, |
| 2900 | }, |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 2901 | }, |
| 2902 | /* |
| 2903 | * DRAM command PRE |
| 2904 | * Closes the row. |
| 2905 | */ |
| 2906 | [2] = { |
Patrick Rudolph | b5fa9c8 | 2020-05-01 18:35:05 +0200 | [diff] [blame] | 2907 | .sp_cmd_ctrl = { |
| 2908 | .command = IOSAV_PRE, |
| 2909 | .ranksel_ap = 1, |
| 2910 | }, |
| 2911 | .subseq_ctrl = { |
| 2912 | .cmd_executions = 1, |
| 2913 | .cmd_delay_gap = 4, |
| 2914 | .post_ssq_wait = ctrl->tRP, |
| 2915 | .data_direction = SSQ_NA, |
| 2916 | }, |
| 2917 | .sp_cmd_addr = { |
| 2918 | .address = 0, |
| 2919 | .rowbits = 6, |
| 2920 | .bank = bank, |
| 2921 | .rank = slotrank, |
| 2922 | }, |
| 2923 | .addr_update = { |
Angel Pons | fd9a8b6 | 2020-11-13 13:56:30 +0100 | [diff] [blame] | 2924 | .addr_wrap = 18, |
Patrick Rudolph | b5fa9c8 | 2020-05-01 18:35:05 +0200 | [diff] [blame] | 2925 | }, |
Angel Pons | 8f0757e | 2020-11-11 23:03:36 +0100 | [diff] [blame] | 2926 | }, |
| 2927 | }; |
| 2928 | iosav_write_sequence(channel, sequence, ARRAY_SIZE(sequence)); |
Patrick Rudolph | b5fa9c8 | 2020-05-01 18:35:05 +0200 | [diff] [blame] | 2929 | |
| 2930 | /* Execute command queue */ |
| 2931 | iosav_run_queue(channel, 16, 0); |
| 2932 | |
| 2933 | wait_for_iosav(channel); |
Angel Pons | 3abd206 | 2020-05-03 00:25:02 +0200 | [diff] [blame] | 2934 | } |
Patrick Rudolph | dd66287 | 2017-10-28 18:20:11 +0200 | [diff] [blame] | 2935 | } |
| 2936 | } |
| 2937 | } |
| 2938 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2939 | void set_scrambling_seed(ramctr_timing *ctrl) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2940 | { |
| 2941 | int channel; |
| 2942 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2943 | /* FIXME: we hardcode seeds. Do we need to use some PRNG for them? I don't think so. */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2944 | static u32 seeds[NUM_CHANNELS][3] = { |
| 2945 | {0x00009a36, 0xbafcfdcf, 0x46d1ab68}, |
| 2946 | {0x00028bfa, 0x53fe4b49, 0x19ed5483} |
| 2947 | }; |
| 2948 | FOR_ALL_POPULATED_CHANNELS { |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 2949 | MCHBAR32(SCHED_CBIT_ch(channel)) &= ~(1 << 28); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2950 | MCHBAR32(SCRAMBLING_SEED_1_ch(channel)) = seeds[channel][0]; |
| 2951 | MCHBAR32(SCRAMBLING_SEED_2_HI_ch(channel)) = seeds[channel][1]; |
| 2952 | MCHBAR32(SCRAMBLING_SEED_2_LO_ch(channel)) = seeds[channel][2]; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2953 | } |
| 2954 | } |
| 2955 | |
Angel Pons | 89ae6b8 | 2020-03-21 13:23:32 +0100 | [diff] [blame] | 2956 | void set_wmm_behavior(const u32 cpu) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2957 | { |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2958 | if (IS_SANDY_CPU(cpu) && (IS_SANDY_CPU_D0(cpu) || IS_SANDY_CPU_D1(cpu))) { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2959 | MCHBAR32(SC_WDBWM) = 0x141d1519; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2960 | } else { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2961 | MCHBAR32(SC_WDBWM) = 0x551d1519; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2962 | } |
| 2963 | } |
| 2964 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2965 | void prepare_training(ramctr_timing *ctrl) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2966 | { |
| 2967 | int channel; |
| 2968 | |
| 2969 | FOR_ALL_POPULATED_CHANNELS { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2970 | /* Always drive command bus */ |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 2971 | MCHBAR32_OR(TC_RAP_ch(channel), 1 << 29); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2972 | } |
| 2973 | |
| 2974 | udelay(1); |
| 2975 | |
| 2976 | FOR_ALL_POPULATED_CHANNELS { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2977 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2978 | } |
| 2979 | } |
| 2980 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2981 | void set_read_write_timings(ramctr_timing *ctrl) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2982 | { |
| 2983 | int channel, slotrank; |
Patrick Rudolph | 19c3dad | 2016-11-26 11:37:45 +0100 | [diff] [blame] | 2984 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2985 | FOR_ALL_POPULATED_CHANNELS { |
| 2986 | u32 b20, b4_8_12; |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2987 | int min_pi = 10000; |
| 2988 | int max_pi = -10000; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2989 | |
| 2990 | FOR_ALL_POPULATED_RANKS { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 2991 | max_pi = MAX(ctrl->timings[channel][slotrank].pi_coding, max_pi); |
| 2992 | min_pi = MIN(ctrl->timings[channel][slotrank].pi_coding, min_pi); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2993 | } |
| 2994 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2995 | b20 = (max_pi - min_pi > 51) ? 0 : ctrl->ref_card_offset[channel]; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2996 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 2997 | b4_8_12 = (ctrl->pi_coding_threshold < max_pi - min_pi) ? 0x3330 : 0x2220; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 2998 | |
Patrick Rudolph | 19c3dad | 2016-11-26 11:37:45 +0100 | [diff] [blame] | 2999 | dram_odt_stretch(ctrl, channel); |
| 3000 | |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 3001 | MCHBAR32(TC_RWP_ch(channel)) = (1 << 27) | (2 << 24) | (b20 << 20) | |
Felix Held | 2463aa9 | 2018-07-29 21:37:55 +0200 | [diff] [blame] | 3002 | ((ctrl->ref_card_offset[channel] + 2) << 16) | b4_8_12; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3003 | } |
| 3004 | } |
| 3005 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 3006 | void set_normal_operation(ramctr_timing *ctrl) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3007 | { |
| 3008 | int channel; |
| 3009 | FOR_ALL_POPULATED_CHANNELS { |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 3010 | MCHBAR32(MC_INIT_STATE_ch(channel)) = (1 << 12) | ctrl->rankmap[channel]; |
| 3011 | MCHBAR32_AND(TC_RAP_ch(channel), ~(1 << 29)); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3012 | } |
| 3013 | } |
| 3014 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3015 | /* Encode the watermark latencies in a suitable format for graphics drivers consumption */ |
| 3016 | static int encode_wm(int ns) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3017 | { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 3018 | return (ns + 499) / 500; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3019 | } |
| 3020 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3021 | /* FIXME: values in this function should be hardware revision-dependent */ |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 3022 | void final_registers(ramctr_timing *ctrl) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3023 | { |
Angel Pons | b50ca57 | 2020-11-11 19:07:20 +0100 | [diff] [blame] | 3024 | const bool is_mobile = get_platform_type() == PLATFORM_MOBILE; |
Patrick Rudolph | 74203de | 2017-11-20 11:57:01 +0100 | [diff] [blame] | 3025 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3026 | int channel; |
| 3027 | int t1_cycles = 0, t1_ns = 0, t2_ns; |
| 3028 | int t3_ns; |
| 3029 | u32 r32; |
| 3030 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3031 | /* FIXME: This register only exists on Ivy Bridge */ |
| 3032 | MCHBAR32(WMM_READ_CONFIG) = 0x46; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3033 | |
Felix Held | f9b826a | 2018-07-30 17:56:52 +0200 | [diff] [blame] | 3034 | FOR_ALL_CHANNELS |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 3035 | MCHBAR32_AND_OR(TC_OTHP_ch(channel), ~(3 << 12), 1 << 12); |
Patrick Rudolph | 652c491 | 2017-10-31 11:36:55 +0100 | [diff] [blame] | 3036 | |
Patrick Rudolph | 74203de | 2017-11-20 11:57:01 +0100 | [diff] [blame] | 3037 | if (is_mobile) |
Patrick Rudolph | 652c491 | 2017-10-31 11:36:55 +0100 | [diff] [blame] | 3038 | /* APD - DLL Off, 64 DCLKs until idle, decision per rank */ |
Angel Pons | 2a9a49b | 2019-12-31 14:24:12 +0100 | [diff] [blame] | 3039 | MCHBAR32(PM_PDWN_CONFIG) = 0x00000740; |
Patrick Rudolph | 652c491 | 2017-10-31 11:36:55 +0100 | [diff] [blame] | 3040 | else |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3041 | /* APD - PPD, 64 DCLKs until idle, decision per rank */ |
Angel Pons | 2a9a49b | 2019-12-31 14:24:12 +0100 | [diff] [blame] | 3042 | MCHBAR32(PM_PDWN_CONFIG) = 0x00000340; |
Patrick Rudolph | 652c491 | 2017-10-31 11:36:55 +0100 | [diff] [blame] | 3043 | |
Felix Held | f9b826a | 2018-07-30 17:56:52 +0200 | [diff] [blame] | 3044 | FOR_ALL_CHANNELS |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 3045 | MCHBAR32(PM_TRML_M_CONFIG_ch(channel)) = 0x00000aaa; |
Felix Held | f9b826a | 2018-07-30 17:56:52 +0200 | [diff] [blame] | 3046 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 3047 | MCHBAR32(PM_BW_LIMIT_CONFIG) = 0x5f7003ff; // OK |
| 3048 | MCHBAR32(PM_DLL_CONFIG) = 0x00073000 | ctrl->mdll_wake_delay; // OK |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3049 | |
| 3050 | FOR_ALL_CHANNELS { |
| 3051 | switch (ctrl->rankmap[channel]) { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3052 | /* Unpopulated channel */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3053 | case 0: |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 3054 | MCHBAR32(PM_CMD_PWR_ch(channel)) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3055 | break; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3056 | /* Only single-ranked dimms */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3057 | case 1: |
| 3058 | case 4: |
| 3059 | case 5: |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3060 | MCHBAR32(PM_CMD_PWR_ch(channel)) = 0x00373131; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3061 | break; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3062 | /* Dual-ranked dimms present */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3063 | default: |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3064 | MCHBAR32(PM_CMD_PWR_ch(channel)) = 0x009b6ea1; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3065 | break; |
| 3066 | } |
| 3067 | } |
| 3068 | |
Felix Held | 50b7ed2 | 2019-12-30 20:41:54 +0100 | [diff] [blame] | 3069 | MCHBAR32(MEM_TRML_ESTIMATION_CONFIG) = 0xca9171e5; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3070 | MCHBAR32_AND_OR(MEM_TRML_THRESHOLDS_CONFIG, ~0x00ffffff, 0x00e4d5d0); |
Felix Held | 50b7ed2 | 2019-12-30 20:41:54 +0100 | [diff] [blame] | 3071 | MCHBAR32_AND(MEM_TRML_INTERRUPT, ~0x1f); |
Felix Held | f9b826a | 2018-07-30 17:56:52 +0200 | [diff] [blame] | 3072 | |
| 3073 | FOR_ALL_CHANNELS |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3074 | MCHBAR32_AND_OR(TC_RFP_ch(channel), ~(3 << 16), 1 << 16); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3075 | |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 3076 | MCHBAR32_OR(MC_INIT_STATE_G, 1 << 0); |
| 3077 | MCHBAR32_OR(MC_INIT_STATE_G, 1 << 7); |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 3078 | MCHBAR32(BANDTIMERS_SNB) = 0xfa; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3079 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3080 | /* Find a populated channel */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3081 | FOR_ALL_POPULATED_CHANNELS |
| 3082 | break; |
| 3083 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 3084 | t1_cycles = (MCHBAR32(TC_ZQCAL_ch(channel)) >> 8) & 0xff; |
| 3085 | r32 = MCHBAR32(PM_DLL_CONFIG); |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3086 | if (r32 & (1 << 17)) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3087 | t1_cycles += (r32 & 0xfff); |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 3088 | t1_cycles += MCHBAR32(TC_SRFTP_ch(channel)) & 0xfff; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3089 | t1_ns = t1_cycles * ctrl->tCK / 256 + 544; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3090 | if (!(r32 & (1 << 17))) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3091 | t1_ns += 500; |
| 3092 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 3093 | t2_ns = 10 * ((MCHBAR32(SAPMTIMERS) >> 8) & 0xfff); |
Angel Pons | 891f2bc | 2020-01-10 01:27:28 +0100 | [diff] [blame] | 3094 | if (MCHBAR32(SAPMCTL) & 8) { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3095 | t3_ns = 10 * ((MCHBAR32(BANDTIMERS_IVB) >> 8) & 0xfff); |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 3096 | t3_ns += 10 * (MCHBAR32(SAPMTIMERS2_IVB) & 0xff); |
Angel Pons | 891f2bc | 2020-01-10 01:27:28 +0100 | [diff] [blame] | 3097 | } else { |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3098 | t3_ns = 500; |
| 3099 | } |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3100 | |
| 3101 | /* The graphics driver will use these watermark values */ |
| 3102 | printk(BIOS_DEBUG, "t123: %d, %d, %d\n", t1_ns, t2_ns, t3_ns); |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 3103 | MCHBAR32_AND_OR(SSKPD, ~0x3f3f3f3f, |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3104 | ((encode_wm(t1_ns) + encode_wm(t2_ns)) << 16) | (encode_wm(t1_ns) << 8) | |
| 3105 | ((encode_wm(t3_ns) + encode_wm(t2_ns) + encode_wm(t1_ns)) << 24) | 0x0c); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3106 | } |
| 3107 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 3108 | void restore_timings(ramctr_timing *ctrl) |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3109 | { |
Angel Pons | 50a6fe7 | 2020-11-14 01:18:14 +0100 | [diff] [blame] | 3110 | int channel, lane; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3111 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3112 | FOR_ALL_POPULATED_CHANNELS { |
| 3113 | MCHBAR32(TC_RAP_ch(channel)) = |
| 3114 | (ctrl->tRRD << 0) |
| 3115 | | (ctrl->tRTP << 4) |
| 3116 | | (ctrl->tCKE << 8) |
| 3117 | | (ctrl->tWTR << 12) |
| 3118 | | (ctrl->tFAW << 16) |
| 3119 | | (ctrl->tWR << 24) |
| 3120 | | (ctrl->cmd_stretch[channel] << 30); |
| 3121 | } |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3122 | |
| 3123 | udelay(1); |
| 3124 | |
| 3125 | FOR_ALL_POPULATED_CHANNELS { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 3126 | wait_for_iosav(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3127 | } |
| 3128 | |
Angel Pons | 50a6fe7 | 2020-11-14 01:18:14 +0100 | [diff] [blame] | 3129 | FOR_ALL_POPULATED_CHANNELS FOR_ALL_LANES { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 3130 | MCHBAR32(IOSAV_By_BW_MASK_ch(channel, lane)) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3131 | } |
| 3132 | |
| 3133 | FOR_ALL_POPULATED_CHANNELS |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 3134 | MCHBAR32_OR(TC_RWP_ch(channel), 1 << 27); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3135 | |
| 3136 | FOR_ALL_POPULATED_CHANNELS { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3137 | udelay(1); |
Angel Pons | dc5539f | 2020-11-12 12:44:25 +0100 | [diff] [blame] | 3138 | MCHBAR32_OR(SCHED_CBIT_ch(channel), 1 << 21); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3139 | } |
| 3140 | |
| 3141 | printram("CPE\n"); |
| 3142 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 3143 | MCHBAR32(GDCRTRAININGMOD) = 0; |
| 3144 | MCHBAR32(IOSAV_DC_MASK) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3145 | |
| 3146 | printram("CP5b\n"); |
| 3147 | |
| 3148 | FOR_ALL_POPULATED_CHANNELS { |
| 3149 | program_timings(ctrl, channel); |
| 3150 | } |
| 3151 | |
| 3152 | u32 reg, addr; |
| 3153 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3154 | /* Poll for RCOMP */ |
| 3155 | while (!(MCHBAR32(RCOMP_TIMER) & (1 << 16))) |
| 3156 | ; |
| 3157 | |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3158 | do { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 3159 | reg = MCHBAR32(IOSAV_STATUS_ch(0)); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3160 | } while ((reg & 0x14) == 0); |
| 3161 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3162 | /* Set state of memory controller */ |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 3163 | MCHBAR32(MC_INIT_STATE_G) = 0x116; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3164 | MCHBAR32(MC_INIT_STATE) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3165 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3166 | /* Wait 500us */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3167 | udelay(500); |
| 3168 | |
| 3169 | FOR_ALL_CHANNELS { |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3170 | /* Set valid rank CKE */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3171 | reg = 0; |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3172 | reg = (reg & ~0x0f) | ctrl->rankmap[channel]; |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 3173 | addr = MC_INIT_STATE_ch(channel); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3174 | MCHBAR32(addr) = reg; |
| 3175 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3176 | /* Wait 10ns for ranks to settle */ |
| 3177 | // udelay(0.01); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3178 | |
| 3179 | reg = (reg & ~0xf0) | (ctrl->rankmap[channel] << 4); |
| 3180 | MCHBAR32(addr) = reg; |
| 3181 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3182 | /* Write reset using a NOP */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3183 | write_reset(ctrl); |
| 3184 | } |
| 3185 | |
Angel Pons | 7c49cb8 | 2020-03-16 23:17:32 +0100 | [diff] [blame] | 3186 | /* MRS commands */ |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3187 | dram_mrscommands(ctrl); |
| 3188 | |
| 3189 | printram("CP5c\n"); |
| 3190 | |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 3191 | MCHBAR32(GDCRTRAININGMOD_ch(0)) = 0; |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3192 | |
| 3193 | FOR_ALL_CHANNELS { |
Angel Pons | 8852188 | 2020-01-05 20:21:20 +0100 | [diff] [blame] | 3194 | MCHBAR32_AND(GDCRCMDDEBUGMUXCFG_Cz_S(channel), ~0x3f000000); |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3195 | udelay(2); |
| 3196 | } |
Patrick Rudolph | fd5fa2a | 2016-11-11 18:22:33 +0100 | [diff] [blame] | 3197 | } |