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[thunderx] Fix hardware deinitialization 

It is required to reset BGX context state for the LMAC using
BGX_CMR_CONFIG register.

This solves problem with network connectivity in Linux booted from
iPXE.

Signed-off-by: Bartosz Szczepanek <bartosz.szczepanek@cavium.com>
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Bartosz Szczepanek 2017-02-07 12:20:18 +01:00 committed by Michael Brown
parent 4a4da573dd
commit ed864feb3a
1 changed files with 7 additions and 0 deletions
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7
src/drivers/net/thunderx.c
View File

@ -1146,10 +1146,17 @@ static int txnic_lmac_probe ( struct txnic_lmac *lmac ) {
* @v lmac Logical MAC
*/
static void txnic_lmac_remove ( struct txnic_lmac *lmac ) {
uint64_t config;
/* Sanity check */
assert ( lmac->vnic != NULL );
/* Disable packet receive and transmit */
config = readq ( lmac->regs + BGX_CMR_CONFIG );
config &= ~( BGX_CMR_CONFIG_DATA_PKT_TX_EN |
BGX_CMR_CONFIG_DATA_PKT_RX_EN );
writeq ( config, ( lmac->regs + BGX_CMR_CONFIG ) );
/* Unregister network device */
unregister_netdev ( lmac->vnic->netdev );