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[efi] Add ability to dump SNP device mode information 

Originally-implemented-by: Curtis Larsen <larsen@dixie.edu>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
pull/20/merge
Michael Brown 2014-08-05 17:32:16 +01:00
parent 27e9ee147a
commit 1f7b269954
1 changed files with 64 additions and 0 deletions
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64
src/drivers/net/efi/snpnet.c
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@ -26,6 +26,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
#include <ipxe/iobuf.h> #include <ipxe/iobuf.h>
#include <ipxe/netdevice.h> #include <ipxe/netdevice.h>
#include <ipxe/ethernet.h> #include <ipxe/ethernet.h>
#include <ipxe/vsprintf.h>
#include <ipxe/efi/efi.h> #include <ipxe/efi/efi.h>
#include <ipxe/efi/Protocol/SimpleNetwork.h> #include <ipxe/efi/Protocol/SimpleNetwork.h>
#include <ipxe/efi/efi_driver.h> #include <ipxe/efi/efi_driver.h>
@ -71,6 +72,65 @@ static EFI_GUID efi_simple_network_protocol_guid
static EFI_GUID efi_pci_io_protocol_guid static EFI_GUID efi_pci_io_protocol_guid
= EFI_PCI_IO_PROTOCOL_GUID; = EFI_PCI_IO_PROTOCOL_GUID;
/**
* Format SNP MAC address (for debugging)
*
* @v mac MAC address
* @v len Length of MAC address
* @ret text MAC address as text
*/
static const char * snpnet_mac_text ( EFI_MAC_ADDRESS *mac, size_t len ) {
static char buf[ sizeof ( *mac ) * 3 /* "xx:" or "xx\0" */ ];
size_t used = 0;
unsigned int i;
for ( i = 0 ; i < len ; i++ ) {
used += ssnprintf ( &buf[used], ( sizeof ( buf ) - used ),
"%s%02x", ( used ? ":" : "" ),
mac->Addr[i] );
}
return buf;
}
/**
* Dump SNP mode information (for debugging)
*
* @v netdev Network device
*/
static void snpnet_dump_mode ( struct net_device *netdev ) {
struct snp_nic *snp = netdev_priv ( netdev );
EFI_SIMPLE_NETWORK_MODE *mode = snp->snp->Mode;
size_t mac_len = mode->HwAddressSize;
unsigned int i;
/* Do nothing unless debugging is enabled */
if ( ! DBG_EXTRA )
return;
DBGC2 ( snp, "SNP %s st %d type %d hdr %d pkt %d rxflt %#x/%#x%s "
"nvram %d acc %d mcast %d/%d\n", netdev->name, mode->State,
mode->IfType, mode->MediaHeaderSize, mode->MaxPacketSize,
mode->ReceiveFilterSetting, mode->ReceiveFilterMask,
( mode->MultipleTxSupported ? " multitx" : "" ),
mode->NvRamSize, mode->NvRamAccessSize,
mode->MCastFilterCount, mode->MaxMCastFilterCount );
DBGC2 ( snp, "SNP %s hw %s", netdev->name,
snpnet_mac_text ( &mode->PermanentAddress, mac_len ) );
DBGC2 ( snp, " addr %s%s",
snpnet_mac_text ( &mode->CurrentAddress, mac_len ),
( mode->MacAddressChangeable ? "" : "(f)" ) );
DBGC2 ( snp, " bcast %s\n",
snpnet_mac_text ( &mode->BroadcastAddress, mac_len ) );
for ( i = 0 ; i < mode->MCastFilterCount ; i++ ) {
DBGC2 ( snp, "SNP %s mcast %s\n", netdev->name,
snpnet_mac_text ( &mode->MCastFilter[i], mac_len ) );
}
DBGC2 ( snp, "SNP %s media %s\n", netdev->name,
( mode->MediaPresentSupported ?
( mode->MediaPresent ? "present" : "not present" ) :
"presence not supported" ) );
}
/** /**
* Check link state * Check link state
* *
@ -255,6 +315,7 @@ static int snpnet_open ( struct net_device *netdev ) {
/* Initialise NIC */ /* Initialise NIC */
if ( ( efirc = snp->snp->Initialize ( snp->snp, 0, 0 ) ) != 0 ) { if ( ( efirc = snp->snp->Initialize ( snp->snp, 0, 0 ) ) != 0 ) {
rc = -EEFI ( efirc ); rc = -EEFI ( efirc );
snpnet_dump_mode ( netdev );
DBGC ( snp, "SNP %s could not initialise: %s\n", DBGC ( snp, "SNP %s could not initialise: %s\n",
netdev->name, strerror ( rc ) ); netdev->name, strerror ( rc ) );
return rc; return rc;
@ -282,6 +343,9 @@ static int snpnet_open ( struct net_device *netdev ) {
/* Ignore error */ /* Ignore error */
} }
/* Dump mode information (for debugging) */
snpnet_dump_mode ( netdev );
return 0; return 0;
} }