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cxgb4: Clear On FLASH config file after a FW upgrade 

Because Firmware and the Firmware Configuration File need to be
in sync; clear out any On-FLASH Firmware Configuration File when new
Firmware is loaded.  This will avoid difficult to diagnose and fix
problems with a mis-matched Firmware Configuration File which prevents the
adapter from being initialized.

Original work by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Arjun Vynipadath <arjun@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arjun Vynipadath 2017-08-08 11:20:52 +05:30 committed by David S. Miller
parent 7120371c8e
commit 4da1874190
2 changed files with 71 additions and 0 deletions
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1
drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
View File

@ -1405,6 +1405,7 @@ int t4_fw_upgrade(struct adapter *adap, unsigned int mbox,
int t4_fl_pkt_align(struct adapter *adap);
unsigned int t4_flash_cfg_addr(struct adapter *adapter);
int t4_check_fw_version(struct adapter *adap);
int t4_load_cfg(struct adapter *adapter, const u8 *cfg_data, unsigned int size);
int t4_get_fw_version(struct adapter *adapter, u32 *vers);
int t4_get_bs_version(struct adapter *adapter, u32 *vers);
int t4_get_tp_version(struct adapter *adapter, u32 *vers);

70
drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
View File

@ -6663,6 +6663,17 @@ int t4_fw_upgrade(struct adapter *adap, unsigned int mbox,
if (ret < 0)
goto out;
/*
* If there was a Firmware Configuration File stored in FLASH,
* there's a good chance that it won't be compatible with the new
* Firmware. In order to prevent difficult to diagnose adapter
* initialization issues, we clear out the Firmware Configuration File
* portion of the FLASH . The user will need to re-FLASH a new
* Firmware Configuration File which is compatible with the new
* Firmware if that's desired.
*/
(void)t4_load_cfg(adap, NULL, 0);
/*
* Older versions of the firmware don't understand the new
* PCIE_FW.HALT flag and so won't know to perform a RESET when they
@ -8895,6 +8906,65 @@ void t4_idma_monitor(struct adapter *adapter,
}
}
/**
* t4_load_cfg - download config file
* @adap: the adapter
* @cfg_data: the cfg text file to write
* @size: text file size
*
* Write the supplied config text file to the card's serial flash.
*/
int t4_load_cfg(struct adapter *adap, const u8 *cfg_data, unsigned int size)
{
int ret, i, n, cfg_addr;
unsigned int addr;
unsigned int flash_cfg_start_sec;
unsigned int sf_sec_size = adap->params.sf_size / adap->params.sf_nsec;
cfg_addr = t4_flash_cfg_addr(adap);
if (cfg_addr < 0)
return cfg_addr;
addr = cfg_addr;
flash_cfg_start_sec = addr / SF_SEC_SIZE;
if (size > FLASH_CFG_MAX_SIZE) {
dev_err(adap->pdev_dev, "cfg file too large, max is %u bytes\n",
FLASH_CFG_MAX_SIZE);
return -EFBIG;
}
i = DIV_ROUND_UP(FLASH_CFG_MAX_SIZE, /* # of sectors spanned */
sf_sec_size);
ret = t4_flash_erase_sectors(adap, flash_cfg_start_sec,
flash_cfg_start_sec + i - 1);
/* If size == 0 then we're simply erasing the FLASH sectors associated
* with the on-adapter Firmware Configuration File.
*/
if (ret || size == 0)
goto out;
/* this will write to the flash up to SF_PAGE_SIZE at a time */
for (i = 0; i < size; i += SF_PAGE_SIZE) {
if ((size - i) < SF_PAGE_SIZE)
n = size - i;
else
n = SF_PAGE_SIZE;
ret = t4_write_flash(adap, addr, n, cfg_data);
if (ret)
goto out;
addr += SF_PAGE_SIZE;
cfg_data += SF_PAGE_SIZE;
}
out:
if (ret)
dev_err(adap->pdev_dev, "config file %s failed %d\n",
(size == 0 ? "clear" : "download"), ret);
return ret;
}
/**
* t4_set_vf_mac - Set MAC address for the specified VF
* @adapter: The adapter