diff options
Diffstat (limited to 'drivers/infiniband/hw/qib/qib_eeprom.c')
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_eeprom.c | 271 |
1 files changed, 0 insertions, 271 deletions
diff --git a/drivers/infiniband/hw/qib/qib_eeprom.c b/drivers/infiniband/hw/qib/qib_eeprom.c deleted file mode 100644 index bf660c001b6d..000000000000 --- a/drivers/infiniband/hw/qib/qib_eeprom.c +++ /dev/null @@ -1,271 +0,0 @@ -/* - * Copyright (c) 2012 Intel Corporation. All rights reserved. - * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved. - * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - 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. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include <linux/delay.h> -#include <linux/pci.h> -#include <linux/vmalloc.h> - -#include "qib.h" - -/* - * Functions specific to the serial EEPROM on cards handled by ib_qib. - * The actual serail interface code is in qib_twsi.c. This file is a client - */ - -/** - * qib_eeprom_read - receives bytes from the eeprom via I2C - * @dd: the qlogic_ib device - * @eeprom_offset: address to read from - * @buff: where to store result - * @len: number of bytes to receive - */ -int qib_eeprom_read(struct qib_devdata *dd, u8 eeprom_offset, - void *buff, int len) -{ - int ret; - - ret = mutex_lock_interruptible(&dd->eep_lock); - if (!ret) { - ret = qib_twsi_reset(dd); - if (ret) - qib_dev_err(dd, "EEPROM Reset for read failed\n"); - else - ret = qib_twsi_blk_rd(dd, dd->twsi_eeprom_dev, - eeprom_offset, buff, len); - mutex_unlock(&dd->eep_lock); - } - - return ret; -} - -/* - * Actually update the eeprom, first doing write enable if - * needed, then restoring write enable state. - * Must be called with eep_lock held - */ -static int eeprom_write_with_enable(struct qib_devdata *dd, u8 offset, - const void *buf, int len) -{ - int ret, pwen; - - pwen = dd->f_eeprom_wen(dd, 1); - ret = qib_twsi_reset(dd); - if (ret) - qib_dev_err(dd, "EEPROM Reset for write failed\n"); - else - ret = qib_twsi_blk_wr(dd, dd->twsi_eeprom_dev, - offset, buf, len); - dd->f_eeprom_wen(dd, pwen); - return ret; -} - -/** - * qib_eeprom_write - writes data to the eeprom via I2C - * @dd: the qlogic_ib device - * @eeprom_offset: where to place data - * @buff: data to write - * @len: number of bytes to write - */ -int qib_eeprom_write(struct qib_devdata *dd, u8 eeprom_offset, - const void *buff, int len) -{ - int ret; - - ret = mutex_lock_interruptible(&dd->eep_lock); - if (!ret) { - ret = eeprom_write_with_enable(dd, eeprom_offset, buff, len); - mutex_unlock(&dd->eep_lock); - } - - return ret; -} - -static u8 flash_csum(struct qib_flash *ifp, int adjust) -{ - u8 *ip = (u8 *) ifp; - u8 csum = 0, len; - - /* - * Limit length checksummed to max length of actual data. - * Checksum of erased eeprom will still be bad, but we avoid - * reading past the end of the buffer we were passed. - */ - len = ifp->if_length; - if (len > sizeof(struct qib_flash)) - len = sizeof(struct qib_flash); - while (len--) - csum += *ip++; - csum -= ifp->if_csum; - csum = ~csum; - if (adjust) - ifp->if_csum = csum; - - return csum; -} - -/** - * qib_get_eeprom_info- get the GUID et al. from the TSWI EEPROM device - * @dd: the qlogic_ib device - * - * We have the capability to use the nguid field, and get - * the guid from the first chip's flash, to use for all of them. - */ -void qib_get_eeprom_info(struct qib_devdata *dd) -{ - void *buf; - struct qib_flash *ifp; - __be64 guid; - int len, eep_stat; - u8 csum, *bguid; - int t = dd->unit; - struct qib_devdata *dd0 = qib_lookup(0); - - if (t && dd0->nguid > 1 && t <= dd0->nguid) { - u8 oguid; - - dd->base_guid = dd0->base_guid; - bguid = (u8 *) &dd->base_guid; - - oguid = bguid[7]; - bguid[7] += t; - if (oguid > bguid[7]) { - if (bguid[6] == 0xff) { - if (bguid[5] == 0xff) { - qib_dev_err(dd, - "Can't set GUID from base, wraps to OUI!\n"); - dd->base_guid = 0; - goto bail; - } - bguid[5]++; - } - bguid[6]++; - } - dd->nguid = 1; - goto bail; - } - - /* - * Read full flash, not just currently used part, since it may have - * been written with a newer definition. - * */ - len = sizeof(struct qib_flash); - buf = vmalloc(len); - if (!buf) - goto bail; - - /* - * Use "public" eeprom read function, which does locking and - * figures out device. This will migrate to chip-specific. - */ - eep_stat = qib_eeprom_read(dd, 0, buf, len); - - if (eep_stat) { - qib_dev_err(dd, "Failed reading GUID from eeprom\n"); - goto done; - } - ifp = (struct qib_flash *)buf; - - csum = flash_csum(ifp, 0); - if (csum != ifp->if_csum) { - qib_devinfo(dd->pcidev, - "Bad I2C flash checksum: 0x%x, not 0x%x\n", - csum, ifp->if_csum); - goto done; - } - if (*(__be64 *) ifp->if_guid == cpu_to_be64(0) || - *(__be64 *) ifp->if_guid == ~cpu_to_be64(0)) { - qib_dev_err(dd, - "Invalid GUID %llx from flash; ignoring\n", - *(unsigned long long *) ifp->if_guid); - /* don't allow GUID if all 0 or all 1's */ - goto done; - } - - /* complain, but allow it */ - if (*(u64 *) ifp->if_guid == 0x100007511000000ULL) - qib_devinfo(dd->pcidev, - "Warning, GUID %llx is default, probably not correct!\n", - *(unsigned long long *) ifp->if_guid); - - bguid = ifp->if_guid; - if (!bguid[0] && !bguid[1] && !bguid[2]) { - /* - * Original incorrect GUID format in flash; fix in - * core copy, by shifting up 2 octets; don't need to - * change top octet, since both it and shifted are 0. - */ - bguid[1] = bguid[3]; - bguid[2] = bguid[4]; - bguid[3] = 0; - bguid[4] = 0; - guid = *(__be64 *) ifp->if_guid; - } else - guid = *(__be64 *) ifp->if_guid; - dd->base_guid = guid; - dd->nguid = ifp->if_numguid; - /* - * Things are slightly complicated by the desire to transparently - * support both the Pathscale 10-digit serial number and the QLogic - * 13-character version. - */ - if ((ifp->if_fversion > 1) && ifp->if_sprefix[0] && - ((u8 *) ifp->if_sprefix)[0] != 0xFF) { - char *snp = dd->serial; - - /* - * This board has a Serial-prefix, which is stored - * elsewhere for backward-compatibility. - */ - memcpy(snp, ifp->if_sprefix, sizeof(ifp->if_sprefix)); - snp[sizeof(ifp->if_sprefix)] = '\0'; - len = strlen(snp); - snp += len; - len = sizeof(dd->serial) - len; - if (len > sizeof(ifp->if_serial)) - len = sizeof(ifp->if_serial); - memcpy(snp, ifp->if_serial, len); - } else { - memcpy(dd->serial, ifp->if_serial, sizeof(ifp->if_serial)); - } - if (!strstr(ifp->if_comment, "Tested successfully")) - qib_dev_err(dd, - "Board SN %s did not pass functional test: %s\n", - dd->serial, ifp->if_comment); - -done: - vfree(buf); - -bail:; -} - |