/* $NetBSD: spdmemvar.h,v 1.16 2020/03/24 04:12:13 msaitoh Exp $ */

/* $NetBSD: spdmemvar.h,v 1.16 2020/03/24 04:12:13 msaitoh Exp $ */

/*
* Copyright (c) 2007 Paul Goyette
* Copyright (c) 2007 Tobias Nygren
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

/*
* This information is extracted from JEDEC standard SPD4_01 (www.jedec.org)
*/

#if BYTE_ORDER == BIG_ENDIAN
#define SPD_BITFIELD(a, b, c, d) d; c; b; a
#else
#define SPD_BITFIELD(a, b, c, d) a; b; c; d
#endif

/*
* NOTE
*
* Fields with "offsets" are field widths, measured in bits,
* with "offset" additional bits. Thus, a field with value
* of 2 with an offset of 14 defines a field with total width
* of 16 bits.
*/

struct spdmem_fpm { /* FPM and EDO DIMMS */
uint8_t fpm_len;
uint8_t fpm_size;
uint8_t fpm_type;
uint8_t fpm_rows;
uint8_t fpm_cols;
uint8_t fpm_banks;
uint16_t fpm_datawidth; /* endian-sensitive */
uint8_t fpm_voltage;
uint8_t fpm_tRAC;
uint8_t fpm_tCAC;
uint8_t fpm_config;
SPD_BITFIELD( \
uint8_t fpm_refresh:7, \
uint8_t fpm_selfrefresh:1, , \
);
uint8_t fpm_dram_dramwidth;
uint8_t fpm_dram_eccwidth;
uint8_t fpm_unused2[17];
uint8_t fpm_superset;
uint8_t fpm_unused3[30];
uint8_t fpm_cksum;
} __packed;

struct spdmem_sdram { /* PC66/PC100/PC133 SDRAM */
uint8_t sdr_len;
uint8_t sdr_size;
uint8_t sdr_type;
SPD_BITFIELD( \
uint8_t sdr_rows:4, \
uint8_t sdr_rows2:4, , \
);
SPD_BITFIELD( \
uint8_t sdr_cols:4, \
uint8_t sdr_cols2:4, , \
);
uint8_t sdr_banks;
uint16_t sdr_datawidth; /* endian-sensitive */
uint8_t sdr_voltage;
SPD_BITFIELD( \
uint8_t sdr_cycle_tenths:4, \
uint8_t sdr_cycle_whole:4, , \
);
SPD_BITFIELD(
uint8_t sdr_tAC_tenths:4, \
uint8_t sdr_tAC_whole:4, , \
);
uint8_t sdr_config;
SPD_BITFIELD( \
uint8_t sdr_refresh:7, \
uint8_t sdr_selfrefresh:1, , \
);
SPD_BITFIELD( \
uint8_t sdr_dramwidth:7, \
uint8_t sdr_dram_asym_bank2:1, ,\
);
SPD_BITFIELD( \
uint8_t sdr_eccwidth:7, \
uint8_t sdr_ecc_asym_bank2:1, , \
);
uint8_t sdr_min_clk_delay;
SPD_BITFIELD( \
uint8_t sdr_burstlengths:4, \
uint8_t sdr_unused1:4, , \
);
uint8_t sdr_banks_per_chip;
uint8_t sdr_tCAS;
uint8_t sdr_tCS;
uint8_t sdr_tWE;
uint8_t sdr_mod_attrs;
uint8_t sdr_dev_attrs;
uint8_t sdr_min_cc_1;
uint8_t sdr_max_tAC_1;
uint8_t sdr_min_cc_2;
uint8_t sdr_max_tAC_2;
uint8_t sdr_tRP;
uint8_t sdr_tRRD;
uint8_t sdr_tRCD;
uint8_t sdr_tRAS;
uint8_t sdr_module_rank_density;
uint8_t sdr_tIS;
#define sdr_superset sdr_tIS
uint8_t sdr_tIH;
uint8_t sdr_tDS;
uint8_t sdr_tDH;
uint8_t sdr_unused2[5];
uint8_t sdr_tRC;
uint8_t sdr_unused3[18];
uint8_t sdr_esdram;
uint8_t sdr_super_tech;
uint8_t sdr_spdrev;
uint8_t sdr_cksum;
} __packed;

struct spdmem_rom {
uint8_t rom_len;
uint8_t rom_size;
uint8_t rom_type;
uint8_t rom_rows;
uint8_t rom_cols;
uint8_t rom_banks;
uint16_t rom_datawidth; /* endian-sensitive */
uint8_t rom_voltage;
uint16_t rom_tAA; /* endian-sensitive */
uint8_t rom_config;
uint8_t rom_unused1;
uint8_t rom_tPA;
uint8_t rom_tOE;
uint16_t rom_tCE; /* endian-sensitive */
uint8_t rom_burstlength;
uint8_t rom_unused2[14];
uint8_t rom_superset[31];
uint8_t rom_cksum;
} __packed;

struct spdmem_ddr { /* Dual Data Rate SDRAM */
uint8_t ddr_len;
uint8_t ddr_size;
uint8_t ddr_type;
SPD_BITFIELD( \
uint8_t ddr_rows:4, \
uint8_t ddr_rows2:4, , \
);
SPD_BITFIELD( \
uint8_t ddr_cols:4, \
uint8_t ddr_cols2:4, , \
);
uint8_t ddr_ranks;
uint16_t ddr_datawidth; /* endian-sensitive */
uint8_t ddr_voltage;
SPD_BITFIELD( \
uint8_t ddr_cycle_tenths:4, \
uint8_t ddr_cycle_whole:4, , \
);
SPD_BITFIELD( \
uint8_t ddr_tAC_hundredths:4, \
uint8_t ddr_tAC_tenths:4, , \
);
uint8_t ddr_config;
SPD_BITFIELD( \
uint8_t ddr_refresh:7, \
uint8_t ddr_selfrefresh:1, , \
);
SPD_BITFIELD( \
uint8_t ddr_dramwidth:7, \
uint8_t ddr_dram_asym_bank2:1, ,\
);
SPD_BITFIELD( \
uint8_t ddr_eccwidth:7, \
uint8_t ddr_ecc_asym_bank2:1, , \
);
uint8_t ddr_min_clk_delay;
SPD_BITFIELD( \
uint8_t ddr_burstlengths:4, \
uint8_t ddr_unused1:4, , \
);
uint8_t ddr_banks_per_chip;
uint8_t ddr_tCAS;
uint8_t ddr_tCS;
uint8_t ddr_tWE;
uint8_t ddr_mod_attrs;
uint8_t ddr_dev_attrs;
uint8_t ddr_min_cc_05;
uint8_t ddr_max_tAC_05;
uint8_t ddr_min_cc_1;
uint8_t ddr_max_tAC_1;
uint8_t ddr_tRP;
uint8_t ddr_tRRD;
uint8_t ddr_tRCD;
uint8_t ddr_tRAS;
uint8_t ddr_module_rank_density;
uint8_t ddr_tIS;
#define ddr_superset ddr_tIS
uint8_t ddr_tIH;
uint8_t ddr_tDS;
uint8_t ddr_tDH;
uint8_t ddr_unused2[5];
uint8_t ddr_tRC;
uint8_t ddr_tRFC;
uint8_t ddr_tCK;
uint8_t ddr_tDQSQ;
uint8_t ddr_tQHS;
uint8_t ddr_unused3;
uint8_t ddr_height;
uint8_t ddr_unused4[15];
uint8_t ddr_cksum;
} __packed;

struct spdmem_ddr2 { /* Dual Data Rate 2 SDRAM */
uint8_t ddr2_len;
uint8_t ddr2_size;
uint8_t ddr2_type;
SPD_BITFIELD( \
uint8_t ddr2_rows:5, \
uint8_t ddr2_unused1:3, , \
);
SPD_BITFIELD( \
uint8_t ddr2_cols:4, \
uint8_t ddr2_unused2:4, , \
);
SPD_BITFIELD( \
uint8_t ddr2_ranks:3,
uint8_t ddr2_cardoncard:1, \
uint8_t ddr2_package:1, \
uint8_t ddr2_height:3 \
);
uint8_t ddr2_datawidth;
uint8_t ddr2_unused3;
uint8_t ddr2_voltage;
SPD_BITFIELD( \
uint8_t ddr2_cycle_frac:4, \
uint8_t ddr2_cycle_whole:4, , \
);
SPD_BITFIELD( \
uint8_t ddr2_tAC_hundredths:4, \
uint8_t ddr2_tAC_tenths:4, , \
);
uint8_t ddr2_config;
SPD_BITFIELD( \
uint8_t ddr2_refresh:7, \
uint8_t ddr2_selfrefresh:1, , \
);
uint8_t ddr2_dramwidth;
uint8_t ddr2_eccwidth;
uint8_t ddr2_unused4;
SPD_BITFIELD( \
uint8_t ddr2_burstlengths:4, \
uint8_t ddr2_unused5:4, , \
);
uint8_t ddr2_banks_per_chip;
uint8_t ddr2_tCAS;
uint8_t ddr2_mechanical;
uint8_t ddr2_dimm_type;
uint8_t ddr2_mod_attrs;
uint8_t ddr2_dev_attrs;
uint8_t ddr2_min_cc_1;
uint8_t ddr2_max_tAC_1;
uint8_t ddr2_min_cc_2;
uint8_t ddr2_max_tAC_2;
uint8_t ddr2_tRP;
uint8_t ddr2_tRRD;
uint8_t ddr2_tRCD;
uint8_t ddr2_tRAS;
uint8_t ddr2_module_rank_density;
uint8_t ddr2_tIS;
uint8_t ddr2_tIH;
uint8_t ddr2_tDS;
uint8_t ddr2_tDH;
uint8_t ddr2_tWR;
uint8_t ddr2_tWTR;
uint8_t ddr2_tRTP;
uint8_t ddr2_probe;
uint8_t ddr2_extensions;
uint8_t ddr2_tRC;
uint8_t ddr2_tRFC;
uint8_t ddr2_tCK;
uint8_t ddr2_tDQSQ;
uint8_t ddr2_tQHS;
uint8_t ddr2_pll_relock;
uint8_t ddr2_Tcasemax;
uint8_t ddr2_Psi_TA_DRAM;
uint8_t ddr2_dt0;
uint8_t ddr2_dt2NQ;
uint8_t ddr2_dr2P;
uint8_t ddr2_dt3N;
uint8_t ddr2_dt3Pfast;
uint8_t ddr2_dt3Pslow;
uint8_t ddr2_dt4R_4R4W_mode;
uint8_t ddr2_dt5B;
uint8_t ddr2_dt7;
uint8_t ddr2_Psi_TA_PLL;
uint8_t ddr2_Psi_TA_Reg;
uint8_t ddr2_dt_PLL_Active;
uint8_t ddr2_dt_Reg_Active;
uint8_t ddr2_spdrev;
uint8_t ddr2_cksum;
} __packed;

struct spdmem_fbdimm { /* Fully-buffered DIMM */
uint8_t fbdimm_len;
uint8_t fbdimm_size;
uint8_t fbdimm_type;
SPD_BITFIELD( \
uint8_t fbdimm_ps1_voltage:4, \
uint8_t fbdimm_ps2_voltage:4, , \
);
SPD_BITFIELD( \
uint8_t fbdimm_banks:2, \
uint8_t fbdimm_cols:3, \
uint8_t fbdimm_rows:3, \
);
SPD_BITFIELD( \
uint8_t fbdimm_thick:3, \
uint8_t fbdimm_height:3, \
uint8_t fbdimm_unused1:2, \
);
uint8_t fbdimm_mod_type;
SPD_BITFIELD( \
uint8_t fbdimm_dev_width:3, \
uint8_t fbdimm_ranks:3, \
uint8_t fbdimm_unused2:2, \
);
SPD_BITFIELD( \
uint8_t fbdimm_ftb_divisor:4, \
uint8_t fbdimm_ftb_dividend:4, ,\
);
uint8_t fbdimm_mtb_dividend;
uint8_t fbdimm_mtb_divisor;
uint8_t fbdimm_tCKmin;
uint8_t fbdimm_tCKmax;
uint8_t fbdimm_tCAS;
uint8_t fbdimm_tAAmin;
SPD_BITFIELD( \
uint8_t fbdimm_tWR_min:4, \
uint8_t fbdimm_WR_range:4, , \
);
uint8_t fbdimm_tWR;
SPD_BITFIELD( \
uint8_t fbdimm_tWL_min:4, \
uint8_t fbdimm_tWL_range:4, , \
);
SPD_BITFIELD( \
uint8_t fbdimm_tAL_min:4, \
uint8_t fbdimm_tAL_range:4, , \
);
uint8_t fbdimm_tRCDmin;
uint8_t fbdimm_tRRDmin;
uint8_t fbdimm_tRPmin;
SPD_BITFIELD( \
uint8_t fbdimm_tRAS_msb:4, \
uint8_t fbdimm_tRC_msb:4, , \
);
uint8_t fbdimm_tRAS_lsb;
uint8_t fbdimm_tRC_lsb;
uint16_t fbdimm_tRFC; /* endian-sensitive */
uint8_t fbdimm_tWTR;
uint8_t fbdimm_tRTP;
SPD_BITFIELD( \
uint8_t fbdimm_burst_4:1, \
uint8_t fbdimm_burst_8:1, \
uint8_t fbdimm_unused3:6, \
);
uint8_t fbdimm_terms;
uint8_t fbdimm_drivers;
uint8_t fbdimm_tREFI;
uint8_t fbdimm_Tcasemax;
uint8_t fbdimm_Psi_TA_SDRAM;
uint8_t fbdimm_DT0;
uint8_t fbdimm_DT2N_DT2Q;
uint8_t fbdimm_DT2P;
uint8_t fbdimm_DT3N;
uint8_t fbdimm_DT4R_DT4R4W;
uint8_t fbdimm_DT5B;
uint8_t fbdimm_DT7;
uint8_t fbdimm_unused4[84];
uint16_t fbdimm_crc;
} __packed;

struct spdmem_rambus { /* Direct Rambus DRAM */
uint8_t rdr_len;
uint8_t rdr_size;
uint8_t rdr_type;
SPD_BITFIELD( \
uint8_t rdr_rows:4, \
uint8_t rdr_cols:4, , \
);
} __packed;

struct spdmem_ddr3 { /* Dual Data Rate 3 SDRAM */
SPD_BITFIELD( \
uint8_t ddr3_ROM_used:4, \
uint8_t ddr3_ROM_size:3, \
uint8_t ddr3_crccover:1, \
);
uint8_t ddr3_romrev;
uint8_t ddr3_type;
uint8_t ddr3_mod_type;
SPD_BITFIELD( \
/* chipsize is offset by 28: 0 = 256M, 1 = 512M, ... */ \
uint8_t ddr3_chipsize:4, \
/* logbanks is offset by 3 */ \
uint8_t ddr3_logbanks:3, \
uint8_t ddr3_unused1:1, \
);
/* cols is offset by 9, rows offset by 12 */
SPD_BITFIELD( \
uint8_t ddr3_cols:3, \
uint8_t ddr3_rows:5, , \
);
SPD_BITFIELD( \
uint8_t ddr3_NOT15V:1, \
uint8_t ddr3_135V:1, \
uint8_t ddr3_125V:1, \
uint8_t ddr3_unused2:5 \
);
/* chipwidth in bits offset by 2: 0 = X4, 1 = X8, 2 = X16 */
/* physbanks is offset by 1 */
SPD_BITFIELD( \
uint8_t ddr3_chipwidth:3, \
uint8_t ddr3_physbanks:5, , \
);
/* datawidth in bits offset by 3: 1 = 16b, 2 = 32b, 3 = 64b */
SPD_BITFIELD( \
uint8_t ddr3_datawidth:3, \
uint8_t ddr3_hasECC:2, \
uint8_t ddr3_unused2a:3 , \
);
/* Fine time base, in pico-seconds */
SPD_BITFIELD( \
uint8_t ddr3_ftb_divisor:4, \
uint8_t ddr3_ftb_dividend:4, , \
);
uint8_t ddr3_mtb_dividend; /* 0x0108 = 0.1250ns */
uint8_t ddr3_mtb_divisor; /* 0x010f = 0.0625ns */
uint8_t ddr3_tCKmin_mtb;
uint8_t ddr3_unused3;
uint16_t ddr3_CAS_sup; /* Bit 0 ==> CAS 4 cycles */
uint8_t ddr3_tAAmin_mtb;
uint8_t ddr3_tWRmin;
uint8_t ddr3_tRCDmin_mtb;
uint8_t ddr3_tRRDmin;
uint8_t ddr3_tRPmin_mtb;
SPD_BITFIELD( \
uint8_t ddr3_tRAS_msb:4, \
uint8_t ddr3_tRCmin_mtb_msb:4, , \
);
uint8_t ddr3_tRAS_lsb;
uint8_t ddr3_tRCmin_mtb_lsb;
uint8_t ddr3_tRFCmin_lsb;
uint8_t ddr3_tRFCmin_msb;
uint8_t ddr3_tWTRmin;
uint8_t ddr3_tRTPmin;
SPD_BITFIELD( \
uint8_t ddr3_tFAW_msb:4, , , \
);
uint8_t ddr3_tFAW_lsb;
uint8_t ddr3_output_drvrs;
SPD_BITFIELD( \
uint8_t ddr3_ext_temp_range:1, \
uint8_t ddr3_ext_temp_2x_refresh:1, \
uint8_t ddr3_asr_refresh:1, \
/* Bit 4 indicates on-die thermal sensor */
/* Bit 7 indicates Partial-Array Self-Refresh (PASR) */
uint8_t ddr3_unused7:5 \
);
SPD_BITFIELD( \
uint8_t ddr3_therm_sensor_acc:7,\
uint8_t ddr3_has_therm_sensor:1, , \
);
SPD_BITFIELD( \
uint8_t ddr3_non_std_devtype:7, \
uint8_t ddr3_std_device:1, , \
);
uint8_t ddr3_tCKmin_ftb;
uint8_t ddr3_tAAmin_ftb;
uint8_t ddr3_tRCDmin_ftb;
uint8_t ddr3_tRPmin_ftb;
uint8_t ddr3_tRCmin_ftb;
uint8_t ddr3_unused4[2];
uint8_t ddr3_MAC;
uint8_t ddr3_unused4a[18];
uint8_t ddr3_mod_height;
uint8_t ddr3_mod_thickness;
uint8_t ddr3_ref_card;
uint8_t ddr3_mapping;
uint8_t ddr3_unused5[53];
uint8_t ddr3_mfgID_lsb;
uint8_t ddr3_mfgID_msb;
uint8_t ddr3_mfgloc;
uint8_t ddr3_mfg_year;
uint8_t ddr3_mfg_week;
uint8_t ddr3_serial[4];
uint16_t ddr3_crc;
uint8_t ddr3_part[18];
uint8_t ddr3_rev[2];
uint8_t ddr3_dram_mfgID_lsb;
uint8_t ddr3_dram_mfgID_msb;
uint8_t ddr3_vendor[26];
} __packed;

/* DDR4 info from JEDEC Standard No. 21-C, Annex L - 4.1.2.12 */

/* Module-type specific bytes - bytes 0x080 thru 0x0ff */

struct spdmem_ddr4_mod_unbuffered {
SPD_BITFIELD( \
uint8_t ddr4_unbuf_mod_height:4, \
uint8_t ddr4_unbuf_card_ext:4, , \
);
SPD_BITFIELD( \
uint8_t ddr4_unbuf_max_thick_front:4, \
uint8_t ddr4_unbuf_max_thick_back:4, , \
);
SPD_BITFIELD( \
uint8_t ddr4_unbuf_refcard:5, \
uint8_t ddr4_unbuf_refcard_rev:2, \
uint8_t ddr4_unbuf_refcard_ext:1, \
);
SPD_BITFIELD( \
uint8_t ddr4_unbuf_mirror_mapping:1, \
uint8_t ddr4_unbuf_unused1:7, , \
);
uint8_t ddr4_unbuf_unused2[122];
uint8_t ddr4_unbuf_crc[2];
} __packed;

struct spdmem_ddr4_mod_registered {
SPD_BITFIELD( \
uint8_t ddr4_reg_mod_height:4, \
uint8_t ddr4_reg_card_ext:4, , \
);
SPD_BITFIELD( \
uint8_t ddr4_reg_max_thick_front:4, \
uint8_t ddr4_reg_max_thick_back:4, , \
);
SPD_BITFIELD( \
uint8_t ddr4_reg_refcard:5, \
uint8_t ddr4_reg_refcard_rev:2, \
uint8_t ddr4_reg_refcard_ext:1, \
);
SPD_BITFIELD( \
uint8_t ddr4_reg_regcnt:2, \
uint8_t ddr4_reg_dram_rows:2, \
uint8_t ddr4_reg_unused1:4, \
);
SPD_BITFIELD( \
uint8_t ddr4_reg_heat_spread_char:7, \
uint8_t ddr4_reg_heat_spread_exist:1, , \
);
uint8_t ddr4_reg_mfg_id_lsb;
uint8_t ddr4_reg_mfg_id_msb;
uint8_t ddr4_reg_revision;
SPD_BITFIELD( \
uint8_t ddr4_reg_mirror_mapping:1, \
uint8_t ddr4_reg_unused2:7, , \
);
SPD_BITFIELD( \
uint8_t ddr4_reg_output_drive_CKE:2, \
uint8_t ddr4_reg_output_drive_ODT:2, \
uint8_t ddr4_reg_output_drive_CmdAddr:2,\
uint8_t ddr4_reg_output_drive_chipsel:2 \
);
SPD_BITFIELD( \
uint8_t ddr4_reg_output_drive_CK_Y0Y2:2,\
uint8_t ddr4_reg_output_drive_CK_Y1Y3:2,\
uint8_t ddr4_reg_unused3:4, \
);
uint8_t ddr4_reg_unused4[115];
uint8_t ddr4_reg_crc[2];
} __packed;

struct spdmem_ddr4_mod_reduced_load {
SPD_BITFIELD( \
uint8_t ddr4_rload_mod_height:4, \
uint8_t ddr4_rload_card_ext:4, , \
);
SPD_BITFIELD( \
uint8_t ddr4_rload_max_thick_front:4, \
uint8_t ddr4_rload_max_thick_back:4, , \
);
SPD_BITFIELD( \
uint8_t ddr4_rload_refcard:5, \
uint8_t ddr4_rload_refcard_rev:2, \
uint8_t ddr4_rload_refcard_ext:1, \
);
SPD_BITFIELD( \
uint8_t ddr4_rload_regcnt:2, \
uint8_t ddr4_rload_dram_rows:2, \
uint8_t ddr4_rload_unused1:4, \
);
SPD_BITFIELD( \
uint8_t ddr4_rload_unused2:7, \
uint8_t ddr4_rload_heat_spread_exist:1, , \
);
uint8_t ddr4_rload_reg_mfg_id_lsb;
uint8_t ddr4_rload_reg_mfg_id_msb;
uint8_t ddr4_rload_reg_revision;
SPD_BITFIELD( \
uint8_t ddr4_rload_reg_mirror_mapping:1,\
uint8_t ddr4_rload_unused3:7, , \
);
SPD_BITFIELD( \
uint8_t ddr4_rload_output_drive_CKE:2, \
uint8_t ddr4_rload_output_drive_ODT:2, \
uint8_t ddr4_rload_output_drive_CmdAddr:2, \
uint8_t ddr4_rload_output_drive_chipsel:2 \
);
SPD_BITFIELD( \
uint8_t ddr4_rload_output_drive_CK_Y0Y2:2, \
uint8_t ddr4_rload_output_drive_CK_Y1Y3:2, \
uint8_t ddr4_rload_unused4:4, \
);
uint8_t ddr4_rload_dbuff_revision;
SPD_BITFIELD( \
uint8_t ddr4_rload_VrefDQ_0:6, \
uint8_t ddr4_rload_unused5:2, , \
);
SPD_BITFIELD( \
uint8_t ddr4_rload_VrefDQ_1:6, \
uint8_t ddr4_rload_unused6:2, , \
);
SPD_BITFIELD( \
uint8_t ddr4_rload_VrefDQ_2:6, \
uint8_t ddr4_rload_unused7:2, , \
);
SPD_BITFIELD( \
uint8_t ddr4_rload_VrefDQ_3:6, \
uint8_t ddr4_rload_unused8:2, , \
);
SPD_BITFIELD( \
uint8_t ddr4_rload_VrefDQ_buffer:6, \
uint8_t ddr4_rload_unused9:2, , \
);
SPD_BITFIELD( \
uint8_t ddr4_rload_MDQ_Read_Term_Str_1866:3, \
uint8_t ddr4_rload_unused10:1, \
uint8_t ddr4_rload_MDQ_Drive_Str_1866:3, \
uint8_t ddr4_rload_unused11:1 \
);
SPD_BITFIELD( \
uint8_t ddr4_rload_MDQ_Read_Term_Str_2400:3, \
uint8_t ddr4_rload_unused12:1, \
uint8_t ddr4_rload_MDQ_Drive_Str_2400:3, \
uint8_t ddr4_rload_unused13:1 \
);
SPD_BITFIELD( \
uint8_t ddr4_rload_MDQ_Read_Term_Str_3200:3, \
uint8_t ddr4_rload_unused14:1, \
uint8_t ddr4_rload_MDQ_Drive_Str_3200:3, \
uint8_t ddr4_rload_unused15:1 \
);
SPD_BITFIELD( \
uint8_t ddr4_rload_DRAM_Drive_Str_1866:2, \
uint8_t ddr4_rload_DRAM_Drive_Str_2400:2, \
uint8_t ddr4_rload_DRAM_Drive_Str_3200:2, \
uint8_t ddr4_rload_unused16:2 \
);
SPD_BITFIELD( \
uint8_t ddr4_rload_DRAM_ODT_RTT_NOM_1866:3, \
uint8_t ddr4_rload_DRAM_ODT_RTT_WR_1866:3, \
uint8_t ddr4_rload_unused17:2, \
);
SPD_BITFIELD( \
uint8_t ddr4_rload_DRAM_ODT_RTT_NOM_2400:3, \
uint8_t ddr4_rload_DRAM_ODT_RTT_WR_2400:3, \
uint8_t ddr4_rload_unused18:2, \
);
SPD_BITFIELD( \
uint8_t ddr4_rload_DRAM_ODT_RTT_NOM_3200:3, \
uint8_t ddr4_rload_DRAM_ODT_RTT_WR_3200:3, \
uint8_t ddr4_rload_unused19:2, \
);
SPD_BITFIELD( \
uint8_t ddr4_rload_DRAM_ODT_RTT_PARK_01_1866:3, \
uint8_t ddr4_rload_DRAM_ODT_RTT_PARK_23_1866:3, \
uint8_t ddr4_rload_unused20:2, \
);
SPD_BITFIELD( \
uint8_t ddr4_rload_DRAM_ODT_RTT_PARK_01_2400:3, \
uint8_t ddr4_rload_DRAM_ODT_RTT_PARK_23_2400:3, \
uint8_t ddr4_rload_unused21:2, \
);
SPD_BITFIELD( \
uint8_t ddr4_rload_DRAM_ODT_RTT_PARK_01_3200:3, \
uint8_t ddr4_rload_DRAM_ODT_RTT_PARK_23_3200:3, \
uint8_t ddr4_rload_unused22:2, \
);
uint8_t ddr4_rload_unused23[99];
uint8_t ddr4_rload_crc[2];
} __packed;

struct spdmem_ddr4 { /* Dual Data Rate 4 SDRAM */
SPD_BITFIELD( \
uint8_t ddr4_ROM_used:4, \
uint8_t ddr4_ROM_size:3, \
uint8_t ddr4_unused0:1, \
);
uint8_t ddr4_romrev;
uint8_t ddr4_type;
SPD_BITFIELD( \
uint8_t ddr4_mod_type:4, \
uint8_t ddr4_hybrid_media:3, \
uint8_t ddr4_hybrid:1, \
);
SPD_BITFIELD( \
/* capacity is offset by 28: 0 = 256M, 1 = 512M, ... */ \
uint8_t ddr4_capacity:4, \
/* logbanks is offset by 2 */ \
uint8_t ddr4_logbanks:2, \
/* bankgroups is offset by 0 */
uint8_t ddr4_bankgroups:2, \
);
/* cols is offset by 9, rows offset by 12 */
SPD_BITFIELD( \
uint8_t ddr4_cols:3, \
uint8_t ddr4_rows:3, \
uint8_t ddr4_unused2:2, \
);
SPD_BITFIELD( \
uint8_t ddr4_signal_loading:2, \
uint8_t ddr4_unused3:2, \
uint8_t ddr4_diecount:3, \
uint8_t ddr4_non_monolithic:1 \
);
SPD_BITFIELD( \
uint8_t ddr4_max_activate_count:4, \
uint8_t ddr4_max_activate_window:2, \
uint8_t ddr4_unused4:2, \
);
uint8_t ddr4_unused5; /* SDRAM Thermal & Refresh Options */
SPD_BITFIELD( \
uint8_t ddr4_unused6:6, \
uint8_t ddr4_ppr_support:2, , /* post package repair */ \
);
uint8_t ddr4_unused7;
SPD_BITFIELD( \
uint8_t ddr4_dram_vdd_12:2, \
uint8_t ddr4_dram_vdd_tbd1:2, \
uint8_t ddr4_dram_vdd_tbd2:2, \
uint8_t ddr4_unused8:2 \
);
SPD_BITFIELD( \
/* device width is 0=4, 1=8, 2=16, or 4=32 bits */ \
uint8_t ddr4_device_width:3, \
/* number of package ranks is field value plus 1 */ \
uint8_t ddr4_package_ranks:3, \
uint8_t ddr4_rank_mix:1, \
uint8_t ddr4_unused9:1 \
);
SPD_BITFIELD( \
/* primary width is offset by 3, extension is offset by 2 */ \
uint8_t ddr4_primary_bus_width:3, \
uint8_t ddr4_bus_width_extension:2, \
uint8_t ddr4_unused10:3, \
);
SPD_BITFIELD( \
uint8_t ddr4_unused11:7, \
uint8_t ddr4_has_therm_sensor:1, , \
);
SPD_BITFIELD( \
uint8_t ddr4_ext_mod_type:4, \
uint8_t ddr4_unused12:4, , \
);
uint8_t ddr4_unused13;
SPD_BITFIELD( \
/* units = 1ps (10**-12sec) */ \
uint8_t ddr4_fine_timebase:2, \
/* units = 125ps */ \
uint8_t ddr4_medium_timebase:2, , \
);
uint8_t ddr4_tCKAVGmin_mtb;
uint8_t ddr4_tCKAVGmax_mtb;
/* Bit 0 of CAS_supported[0 corresponds to CL=7 */
uint8_t ddr4_CAS_supported[4];
uint8_t ddr4_tAAmin_mtb;
uint8_t ddr4_tRCDmin_mtb;
uint8_t ddr4_tRPmin_mtb;
SPD_BITFIELD( \
uint8_t ddr4_tRASmin_msb:4, \
uint8_t ddr4_tRCmin_mtb_msb:4, , \
);
uint8_t ddr4_tRASmin_lsb;
uint8_t ddr4_tRCmin_mtb_lsb;
uint8_t ddr4_tRFC1min_lsb;
uint8_t ddr4_tRFC1min_msb;
uint8_t ddr4_tRFC2min_lsb;
uint8_t ddr4_tRFC2min_msb;
uint8_t ddr4_tRFC4min_lsb;
uint8_t ddr4_tRFC4min_msb;
SPD_BITFIELD( \
uint8_t ddr4_tFAW_mtb_msb:4, \
uint8_t ddr4_unused14:4, , \
);
uint8_t ddr4_tFAWmin_mtb_lsb;
uint8_t ddr4_tRRD_Smin_mtb;
uint8_t ddr4_tRRD_Lmin_mtb;
uint8_t ddr4_tCCD_Lmin_mtb;
uint8_t ddr4_tWR_min_msb;
uint8_t ddr4_tWR_min_mtb;
uint8_t ddr4_tWTR_min;
uint8_t ddr4_tWTR_Smin_mtb;
uint8_t ddr4_tWTR_Lmin_mtb;
uint8_t ddr4_unused15[14];
uint8_t ddr4_connector_map[18];
uint8_t ddr4_unused16[39];
uint8_t ddr4_tCCD_Lmin_ftb;
uint8_t ddr4_tRRD_Lmin_ftb;
uint8_t ddr4_tRRD_Smin_ftb;
uint8_t ddr4_tRCmin_ftb;
uint8_t ddr4_tRPmin_ftb;
uint8_t ddr4_tRCDmin_ftb;
uint8_t ddr4_tAAmin_ftb;
uint8_t ddr4_tCKAVGmax_ftb;
uint8_t ddr4_tCKAVGmin_ftb;
uint16_t ddr4_crc;
union {
struct spdmem_ddr4_mod_unbuffered u2_unbuf;
struct spdmem_ddr4_mod_registered u2_reg;
struct spdmem_ddr4_mod_reduced_load u2_red_load;
} ddr4_u2;
uint8_t ddr4_unused17[64];
uint8_t ddr4_module_mfg_lsb;
uint8_t ddr4_module_mfg_msb;
uint8_t ddr4_module_mfg_loc;
uint8_t ddr4_module_mfg_year;
uint8_t ddr4_module_mfg_week;
uint8_t ddr4_serial_number[4];
uint8_t ddr4_part_number[20];
uint8_t ddr4_revision_code;
uint8_t ddr4_dram_mfgID_lsb;
uint8_t ddr4_dram_mfgID_msb;
uint8_t ddr4_dram_stepping;
uint8_t ddr4_mfg_specific_data[29];
uint8_t ddr4_unused18[2];
uint8_t ddr4_user_data[128];
} __packed;

struct spdmem {
union {
struct spdmem_fbdimm u1_fbd;
struct spdmem_fpm u1_fpm;
struct spdmem_ddr u1_ddr;
struct spdmem_ddr2 u1_ddr2;
struct spdmem_sdram u1_sdr;
struct spdmem_rambus u1_rdr;
struct spdmem_rom u1_rom;
struct spdmem_ddr3 u1_ddr3;
struct spdmem_ddr4 u1_ddr4;
} sm_u1;
} __packed;
#define sm_fbd sm_u1.u1_fbd
#define sm_fpm sm_u1.u1_fpm
#define sm_ddr sm_u1.u1_ddr
#define sm_ddr2 sm_u1.u1_ddr2
#define sm_rdr sm_u1.u1_rdr
#define sm_rom sm_u1.u1_rom
#define sm_ddr3 sm_u1.u1_ddr3
#define sm_sdr sm_u1.u1_sdr
#define sm_ddr4 sm_u1.u1_ddr4

/* some fields are in the same place for all memory types */

#define sm_len sm_fpm.fpm_len
#define sm_size sm_fpm.fpm_size
#define sm_type sm_fpm.fpm_type
#define sm_cksum sm_fpm.fpm_cksum
#define sm_config sm_fpm.fpm_config
#define sm_voltage sm_fpm.fpm_voltage
#define sm_refresh sm_fpm.fpm_refresh
#define sm_selfrefresh sm_fpm.fpm_selfrefresh

#define SPDMEM_TYPE_MAXLEN 40

struct spdmem_softc {
int (*sc_read)(struct spdmem_softc *, uint16_t, uint8_t *);
struct spdmem sc_spd_data;
struct sysctllog *sc_sysctl_log;
char sc_type[SPDMEM_TYPE_MAXLEN];
};

int spdmem_common_probe(struct spdmem_softc *);
void spdmem_common_attach(struct spdmem_softc *, device_t);
int spdmem_common_detach(struct spdmem_softc *, device_t);