63 static int ddr4_spd_check(const struct ddr4_spd *spd)  in ddr4_spd_check()  argument
65 	void *p = (void *)spd;  in ddr4_spd_check()
77 	if (spd->crc[0] != crc_lsb || spd->crc[1] != crc_msb) {  in ddr4_spd_check()
79 		      spd->crc[1], spd->crc[0], crc_msb, crc_lsb);  in ddr4_spd_check()
83 	p = (void *)spd + 128;  in ddr4_spd_check()
90 	if (spd->mod_section.uc[126] != crc_lsb ||  in ddr4_spd_check()
91 	    spd->mod_section.uc[127] != crc_msb) {  in ddr4_spd_check()
93 		      spd->mod_section.uc[127], spd->mod_section.uc[126],  in ddr4_spd_check()
102 compute_ranksize(const struct ddr4_spd *spd)  in compute_ranksize()  argument
112 	if ((spd->density_banks & 0xf) <= 7) {  in compute_ranksize()
113 		nbit_sdram_cap_bsize = (spd->density_banks & 0xf) + 28;  in compute_ranksize()
115 	if ((spd->bus_width & 0x7) < 4) {  in compute_ranksize()
116 		nbit_primary_bus_width = (spd->bus_width & 0x7) + 3;  in compute_ranksize()
118 	if ((spd->organization & 0x7) < 4) {  in compute_ranksize()
119 		nbit_sdram_width = (spd->organization & 0x7) + 2;  in compute_ranksize()
121 	package_3ds = (spd->package_type & 0x3) == 0x2;  in compute_ranksize()
123 		die_count = (spd->package_type >> 4) & 0x7;  in compute_ranksize()
133 int cal_dimm_params(const struct ddr4_spd *spd, struct dimm_params *pdimm)  in cal_dimm_params()  argument
145 	if (spd->mem_type != SPD_MEMTYPE_DDR4) {  in cal_dimm_params()
150 	ret = ddr4_spd_check(spd);  in cal_dimm_params()
161 	if ((spd->info_size_crc & 0xF) > 2) {  in cal_dimm_params()
162 		memcpy(pdimm->mpart, spd->mpart, sizeof(pdimm->mpart) - 1);  in cal_dimm_params()
166 	pdimm->n_ranks = ((spd->organization >> 3) & 0x7) + 1;  in cal_dimm_params()
168 	pdimm->rank_density = compute_ranksize(spd);  in cal_dimm_params()
176 	pdimm->die_density = spd->density_banks & 0xf;  in cal_dimm_params()
178 	pdimm->primary_sdram_width = 1 << (3 + (spd->bus_width & 0x7));  in cal_dimm_params()
180 	if (((spd->bus_width >> 3) & 0x3) != 0) {  in cal_dimm_params()
186 	pdimm->device_width = 1 << ((spd->organization & 0x7) + 2);  in cal_dimm_params()
188 	pdimm->package_3ds = (spd->package_type & 0x3) == 0x2 ?  in cal_dimm_params()
189 			     (spd->package_type >> 4) & 0x7 : 0;  in cal_dimm_params()
192 	switch (spd->module_type & DDR4_SPD_MODULETYPE_MASK) {  in cal_dimm_params()
197 		pdimm->rc = spd->mod_section.registered.ref_raw_card & 0x9f;  in cal_dimm_params()
198 		if ((spd->mod_section.registered.reg_map & 0x1) != 0) {  in cal_dimm_params()
201 		val = spd->mod_section.registered.ca_stren;  in cal_dimm_params()
204 		val = spd->mod_section.registered.clk_stren;  in cal_dimm_params()
226 		pdimm->rc = spd->mod_section.unbuffered.ref_raw_card & 0x9f;  in cal_dimm_params()
227 		if ((spd->mod_section.unbuffered.addr_mapping & 0x1) != 0) {  in cal_dimm_params()
230 		if ((spd->mod_section.unbuffered.mod_height & 0xe0) == 0 &&  in cal_dimm_params()
231 		    (spd->mod_section.unbuffered.ref_raw_card == 0x04)) {  in cal_dimm_params()
234 				if (spd->mapping[i] == udimm_rc_e_dq[i]) {  in cal_dimm_params()
238 				ptr = (unsigned char *)&spd->mapping[i];  in cal_dimm_params()
248 		ERROR("Unknown module_type 0x%x\n", spd->module_type);  in cal_dimm_params()
256 	pdimm->n_row_addr = ((spd->addressing >> 3) & 0x7) + 12;  in cal_dimm_params()
258 	pdimm->n_col_addr = (spd->addressing & 0x7) + 9;  in cal_dimm_params()
260 	pdimm->bank_addr_bits = (spd->density_banks >> 4) & 0x3;  in cal_dimm_params()
262 	pdimm->bank_group_bits = (spd->density_banks >> 6) & 0x3;  in cal_dimm_params()
283 	if ((spd->timebases & 0xf) == 0x0) {  in cal_dimm_params()
293 	pdimm->tckmin_x_ps = spd_to_ps(spd->tck_min, spd->fine_tck_min);  in cal_dimm_params()
297 	pdimm->tckmax_ps = spd_to_ps(spd->tck_max, spd->fine_tck_max);  in cal_dimm_params()
308 	pdimm->caslat_x  = (spd->caslat_b1 << 7)	|  in cal_dimm_params()
309 			   (spd->caslat_b2 << 15)	|  in cal_dimm_params()
310 			   (spd->caslat_b3 << 23);  in cal_dimm_params()
313 	if (spd->caslat_b4 != 0) {  in cal_dimm_params()
320 	pdimm->taa_ps = spd_to_ps(spd->taa_min, spd->fine_taa_min);  in cal_dimm_params()
326 	pdimm->trcd_ps = spd_to_ps(spd->trcd_min, spd->fine_trcd_min);  in cal_dimm_params()
332 	pdimm->trp_ps = spd_to_ps(spd->trp_min, spd->fine_trp_min);  in cal_dimm_params()
336 	pdimm->tras_ps = (((spd->tras_trc_ext & 0xf) << 8) +  in cal_dimm_params()
337 			  spd->tras_min_lsb) * pdimm->mtb_ps;  in cal_dimm_params()
341 	pdimm->trc_ps = spd_to_ps((((spd->tras_trc_ext & 0xf0) << 4) +  in cal_dimm_params()
342 				   spd->trc_min_lsb), spd->fine_trc_min);  in cal_dimm_params()
345 	pdimm->trfc1_ps = ((spd->trfc1_min_msb << 8) | (spd->trfc1_min_lsb)) *  in cal_dimm_params()
348 	pdimm->trfc2_ps = ((spd->trfc2_min_msb << 8) | (spd->trfc2_min_lsb)) *  in cal_dimm_params()
351 	pdimm->trfc4_ps = ((spd->trfc4_min_msb << 8) | (spd->trfc4_min_lsb)) *  in cal_dimm_params()
355 	pdimm->tfaw_ps = (((spd->tfaw_msb & 0xf) << 8) | spd->tfaw_min) *  in cal_dimm_params()
360 	pdimm->trrds_ps = spd_to_ps(spd->trrds_min, spd->fine_trrds_min);  in cal_dimm_params()
363 	pdimm->trrdl_ps = spd_to_ps(spd->trrdl_min, spd->fine_trrdl_min);  in cal_dimm_params()
366 	pdimm->tccdl_ps = spd_to_ps(spd->tccdl_min, spd->fine_tccdl_min);  in cal_dimm_params()
391 		pdimm->dq_mapping[i] = spd->mapping[i];  in cal_dimm_params()
395 	pdimm->dq_mapping_ors = ((spd->mapping[0] >> 6) & 0x3) == 0 ? 1 : 0;  in cal_dimm_params()