3  * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved.
9  * COPYING in the main directory of this source tree, or the
16  *      - Redistributions of source code must retain the above
20  *      - Redistributions in binary form must reproduce the above
42  * Functions specific to the serial EEPROM on cards handled by ib_qib.
47  * qib_eeprom_read - receives bytes from the eeprom via I2C
58 	ret = mutex_lock_interruptible(&dd->eep_lock);  in qib_eeprom_read()
62 			qib_dev_err(dd, "EEPROM Reset for read failed\n");  in qib_eeprom_read()
64 			ret = qib_twsi_blk_rd(dd, dd->twsi_eeprom_dev,  in qib_eeprom_read()
66 		mutex_unlock(&dd->eep_lock);  in qib_eeprom_read()
73  * Actually update the eeprom, first doing write enable if
82 	pwen = dd->f_eeprom_wen(dd, 1);  in eeprom_write_with_enable()
85 		qib_dev_err(dd, "EEPROM Reset for write failed\n");  in eeprom_write_with_enable()
87 		ret = qib_twsi_blk_wr(dd, dd->twsi_eeprom_dev,  in eeprom_write_with_enable()
89 	dd->f_eeprom_wen(dd, pwen);  in eeprom_write_with_enable()
94  * qib_eeprom_write - writes data to the eeprom via I2C
105 	ret = mutex_lock_interruptible(&dd->eep_lock);  in qib_eeprom_write()
108 		mutex_unlock(&dd->eep_lock);  in qib_eeprom_write()
121 	 * Checksum of erased eeprom will still be bad, but we avoid  in flash_csum()
124 	len = ifp->if_length;  in flash_csum()
127 	while (len--)  in flash_csum()
129 	csum -= ifp->if_csum;  in flash_csum()
132 		ifp->if_csum = csum;  in flash_csum()
138  * qib_get_eeprom_info- get the GUID et al. from the TSWI EEPROM device
151 	int t = dd->unit;  in qib_get_eeprom_info()
154 	if (t && dd0->nguid > 1 && t <= dd0->nguid) {  in qib_get_eeprom_info()
157 		dd->base_guid = dd0->base_guid;  in qib_get_eeprom_info()
158 		bguid = (u8 *) &dd->base_guid;  in qib_get_eeprom_info()
167 					dd->base_guid = 0;  in qib_get_eeprom_info()
174 		dd->nguid = 1;  in qib_get_eeprom_info()
188 	 * Use "public" eeprom read function, which does locking and  in qib_get_eeprom_info()
189 	 * figures out device. This will migrate to chip-specific.  in qib_get_eeprom_info()
194 		qib_dev_err(dd, "Failed reading GUID from eeprom\n");  in qib_get_eeprom_info()
200 	if (csum != ifp->if_csum) {  in qib_get_eeprom_info()
201 		qib_devinfo(dd->pcidev,  in qib_get_eeprom_info()
203 			csum, ifp->if_csum);  in qib_get_eeprom_info()
206 	if (*(__be64 *) ifp->if_guid == cpu_to_be64(0) ||  in qib_get_eeprom_info()
207 	    *(__be64 *) ifp->if_guid == ~cpu_to_be64(0)) {  in qib_get_eeprom_info()
210 			*(unsigned long long *) ifp->if_guid);  in qib_get_eeprom_info()
216 	if (*(u64 *) ifp->if_guid == 0x100007511000000ULL)  in qib_get_eeprom_info()
217 		qib_devinfo(dd->pcidev,  in qib_get_eeprom_info()
219 			*(unsigned long long *) ifp->if_guid);  in qib_get_eeprom_info()
221 	bguid = ifp->if_guid;  in qib_get_eeprom_info()
232 		guid = *(__be64 *) ifp->if_guid;  in qib_get_eeprom_info()
234 		guid = *(__be64 *) ifp->if_guid;  in qib_get_eeprom_info()
235 	dd->base_guid = guid;  in qib_get_eeprom_info()
236 	dd->nguid = ifp->if_numguid;  in qib_get_eeprom_info()
239 	 * support both the Pathscale 10-digit serial number and the QLogic  in qib_get_eeprom_info()
240 	 * 13-character version.  in qib_get_eeprom_info()
242 	if ((ifp->if_fversion > 1) && ifp->if_sprefix[0] &&  in qib_get_eeprom_info()
243 	    ((u8 *) ifp->if_sprefix)[0] != 0xFF) {  in qib_get_eeprom_info()
244 		char *snp = dd->serial;  in qib_get_eeprom_info()
247 		 * This board has a Serial-prefix, which is stored  in qib_get_eeprom_info()
248 		 * elsewhere for backward-compatibility.  in qib_get_eeprom_info()
250 		memcpy(snp, ifp->if_sprefix, sizeof(ifp->if_sprefix));  in qib_get_eeprom_info()
251 		snp[sizeof(ifp->if_sprefix)] = '\0';  in qib_get_eeprom_info()
254 		len = sizeof(dd->serial) - len;  in qib_get_eeprom_info()
255 		if (len > sizeof(ifp->if_serial))  in qib_get_eeprom_info()
256 			len = sizeof(ifp->if_serial);  in qib_get_eeprom_info()
257 		memcpy(snp, ifp->if_serial, len);  in qib_get_eeprom_info()
259 		memcpy(dd->serial, ifp->if_serial, sizeof(ifp->if_serial));  in qib_get_eeprom_info()
261 	if (!strstr(ifp->if_comment, "Tested successfully"))  in qib_get_eeprom_info()
264 			dd->serial, ifp->if_comment);  in qib_get_eeprom_info()