diff options
Diffstat (limited to 'src/drivers/net/phantom/phantom.c')
| -rw-r--r-- | src/drivers/net/phantom/phantom.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/drivers/net/phantom/phantom.c b/src/drivers/net/phantom/phantom.c index 3b2fbfd3..40fc9536 100644 --- a/src/drivers/net/phantom/phantom.c +++ b/src/drivers/net/phantom/phantom.c @@ -1938,6 +1938,32 @@ static void phantom_get_macaddr ( struct phantom_nic *phantom, } /** + * Check Phantom is enabled for boot + * + * @v phanton_port Phantom NIC + * @ret rc Return status code + * + * This is something of an ugly hack to accommodate an OEM + * requirement. The NIC has only one expansion ROM BAR, rather than + * one per port. To allow individual ports to be selectively + * enabled/disabled for PXE boot (as required), we must therefore + * leave the expansion ROM always enabled, and place the per-port + * enable/disable logic within the gPXE driver. + */ +static int phantom_check_boot_enable ( struct phantom_nic *phantom ) { + unsigned long boot_enable; + + boot_enable = phantom_readl ( phantom, UNM_CAM_RAM_BOOT_ENABLE ); + if ( ! ( boot_enable & ( 1 << phantom->port ) ) ) { + DBGC ( phantom, "Phantom %p PXE boot is disabled\n", + phantom ); + return -ENOTSUP; + } + + return 0; +} + +/** * Initialise Phantom receive PEG * * @v phantom Phantom NIC @@ -2034,6 +2060,10 @@ static int phantom_probe ( struct pci_device *pci, /* Read MAC addresses */ phantom_get_macaddr ( phantom, netdev->ll_addr ); + /* Skip if boot disabled on NIC */ + if ( ( rc = phantom_check_boot_enable ( phantom ) ) != 0 ) + goto err_check_boot_enable; + /* Register network devices */ if ( ( rc = register_netdev ( netdev ) ) != 0 ) { DBGC ( phantom, "Phantom %p could not register net device: " @@ -2056,6 +2086,7 @@ static int phantom_probe ( struct pci_device *pci, err_register_settings: unregister_netdev ( netdev ); err_register_netdev: + err_check_boot_enable: err_init_rcvpeg: err_init_cmdpeg: phantom_halt_pegs ( phantom ); |