14  * www.radisys.com/files/support_downloads/007-01277-0002.82600DataBook.pdf
35  * sizes of 64 bit wide (72 bits with ECC) Synchronous DRAM (SDRAM) DIMMs,
38  * registered and unbuffered DIMMs as well as mixing of ECC and non-ECC DIMMs
49 /* Radisys 82600 register addresses - device 0 function 0 - PCI bridge */
50 #define R82600_DRAMC	0x57	/* Various SDRAM related control bits
51 				 * all bits are R/W
65 				 * More SDRAM related control bits
66 				 * all bits are R/W
74 				 *        1=Drive ECC bits to 0 during
88 #define R82600_EAP	0x80	/* ECC Error Address Pointer Register
94 				 * 30:12 Error Address Pointer (RO)
95 				 *        Upper 19 bits of error address
97 				 * 11:4  Syndrome Bits (RO)
122 #define R82600_DRBA	0x60	/* + 0x60..0x63 SDRAM Row Boundary Address
125 				 * 7:0  Address lines 30:24 - upper limit of
142 	pdev = to_pci_dev(mci->pdev);  in r82600_get_error_info()
143 	pci_read_config_dword(pdev, R82600_EAP, &info->eapr);  in r82600_get_error_info()
145 	if (info->eapr & BIT(0))  in r82600_get_error_info()
151 	if (info->eapr & BIT(1))  in r82600_get_error_info()
168 	/* bits 30:12 store the upper 19 bits of the 32 bit error address */  in r82600_process_error_info()
169 	eapaddr = ((info->eapr >> 12) & 0x7FFF) << 13;  in r82600_process_error_info()
170 	/* Syndrome in bits 11:4 [p.62]       */  in r82600_process_error_info()
171 	syndrome = (info->eapr >> 4) & 0xFF;  in r82600_process_error_info()
174 	 * granularity (upper 19 bits only)     */  in r82600_process_error_info()
177 	if (info->eapr & BIT(0)) {	/* CE? */  in r82600_process_error_info()
184 					     0, -1,  in r82600_process_error_info()
185 					     mci->ctl_name, "");  in r82600_process_error_info()
188 	if (info->eapr & BIT(1)) {	/* UE? */  in r82600_process_error_info()
196 					     0, -1,  in r82600_process_error_info()
197 					     mci->ctl_name, "");  in r82600_process_error_info()
222 	u8 drbar;		/* SDRAM Row Boundary Address Register */  in r82600_init_csrows()
230 	for (index = 0; index < mci->nr_csrows; index++) {  in r82600_init_csrows()
231 		csrow = mci->csrows[index];  in r82600_init_csrows()
232 		dimm = csrow->channels[0]->dimm;  in r82600_init_csrows()
234 		/* find the DRAM Chip Select Base address and mask */  in r82600_init_csrows()
242 		edac_dbg(1, "Row=%d, Boundary Address=%#0x, Last = %#0x\n",  in r82600_init_csrows()
251 		csrow->first_page = row_base >> PAGE_SHIFT;  in r82600_init_csrows()
252 		csrow->last_page = (row_high_limit >> PAGE_SHIFT) - 1;  in r82600_init_csrows()
254 		dimm->nr_pages = csrow->last_page - csrow->first_page + 1;  in r82600_init_csrows()
255 		/* Error address is top 19 bits - so granularity is      *  in r82600_init_csrows()
256 		 * 14 bits                                               */  in r82600_init_csrows()
257 		dimm->grain = 1 << 14;  in r82600_init_csrows()
258 		dimm->mtype = reg_sdram ? MEM_RDDR : MEM_DDR;  in r82600_init_csrows()
259 		/* FIXME - check that this is unknowable with this chipset */  in r82600_init_csrows()
260 		dimm->dtype = DEV_UNKNOWN;  in r82600_init_csrows()
263 		dimm->edac_mode = ecc_on ? EDAC_SECDED : EDAC_NONE;  in r82600_init_csrows()
293 		return -ENOMEM;  in r82600_probe1()
296 	mci->pdev = &pdev->dev;  in r82600_probe1()
297 	mci->mtype_cap = MEM_FLAG_RDDR | MEM_FLAG_DDR;  in r82600_probe1()
298 	mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_EC | EDAC_FLAG_SECDED;  in r82600_probe1()
303 	/* On the R82600, the pins for memory bits 72:65 - i.e. the   *  in r82600_probe1()
304 	 * EC bits are shared with the pins for COM2 (!), so if COM2  *  in r82600_probe1()
307 	mci->edac_cap = EDAC_FLAG_NONE | EDAC_FLAG_EC | EDAC_FLAG_SECDED;  in r82600_probe1()
311 			edac_dbg(3, "mci = %p - Scrubbing disabled! EAP: %#0x\n",  in r82600_probe1()
314 		mci->edac_cap = EDAC_FLAG_NONE;  in r82600_probe1()
316 	mci->mod_name = EDAC_MOD_STR;  in r82600_probe1()
317 	mci->ctl_name = "R82600";  in r82600_probe1()
318 	mci->dev_name = pci_name(pdev);  in r82600_probe1()
319 	mci->edac_check = r82600_check;  in r82600_probe1()
320 	mci->ctl_page_to_phys = NULL;  in r82600_probe1()
340 	r82600_pci = edac_pci_create_generic_ctl(&pdev->dev, EDAC_MOD_STR);  in r82600_probe1()
355 	return -ENODEV;  in r82600_probe1()
365 	return r82600_probe1(pdev, ent->driver_data);  in r82600_init_one()
377 	if ((mci = edac_mc_del_mc(&pdev->dev)) == NULL)  in r82600_remove_one()
418 MODULE_AUTHOR("Tim Small <tim@buttersideup.com> - WPAD Ltd. on behalf of EADS Astrium");