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Add support for non-volatile stored options in the RTL8139 EEPROM.

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This commit is contained in:
Michael Brown 2006-12-06 20:45:44 +00:00
parent 2863d1a1de
commit 29db66fb51
1 changed files with 38 additions and 1 deletions
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39
src/drivers/net/rtl8139.c
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@ -79,6 +79,7 @@
#include <gpxe/netdevice.h>
#include <gpxe/spi_bit.h>
#include <gpxe/threewire.h>
#include <gpxe/nvo.h>
#define TX_RING_SIZE 4
@ -98,6 +99,7 @@ struct rtl8139_nic {
struct rtl8139_rx rx;
struct spi_bit_basher spibit;
struct spi_device eeprom;
struct nvo_block nvo;
};
/* Tuning Parameters */
@ -193,6 +195,10 @@ enum RxConfigBits {
AcceptMulticast=0x04, AcceptMyPhys=0x02, AcceptAllPhys=0x01,
};
enum Config1Bits {
VPDEnable=0x02,
};
/* EEPROM access */
#define EE_M1 0x80 /* Mode select bit 1 */
#define EE_M0 0x40 /* Mode select bit 0 */
@ -240,6 +246,17 @@ static struct bit_basher_operations rtl_basher_ops = {
.write = rtl_spi_write_bit,
};
/** Portion of EEPROM available for non-volatile stored options
*
* We use offset 0x40 (i.e. address 0x20), length 0x40. This block is
* marked as VPD in the rtl8139 datasheets, so we use it only if we
* detect that the card is not supporting VPD.
*/
static struct nvo_fragment rtl_nvo_fragments[] = {
{ 0x20, 0x40 },
{ 0, 0 }
};
/**
* Set up for EEPROM access
*
@ -247,6 +264,7 @@ static struct bit_basher_operations rtl_basher_ops = {
*/
void rtl_init_eeprom ( struct rtl8139_nic *rtl ) {
int ee9356;
int vpd;
/* Initialise three-wire bus */
rtl->spibit.basher.op = &rtl_basher_ops;
@ -263,6 +281,15 @@ static struct bit_basher_operations rtl_basher_ops = {
init_at93c46 ( &rtl->eeprom, 16 );
}
rtl->eeprom.bus = &rtl->spibit.bus;
/* Initialise space for non-volatile options, if available */
vpd = ( inw ( rtl->ioaddr + Config1 ) & VPDEnable );
if ( vpd ) {
DBG ( "EEPROM in use for VPD; cannot use for options\n" );
} else {
rtl->nvo.nvs = &rtl->eeprom.nvs;
rtl->nvo.fragments = rtl_nvo_fragments;
}
}
/**
@ -492,6 +519,7 @@ static int rtl_probe ( struct pci_device *pci,
const struct pci_device_id *id __unused ) {
struct net_device *netdev;
struct rtl8139_nic *rtl = NULL;
int registered_netdev = 0;
int rc;
/* Fix up PCI device */
@ -522,7 +550,13 @@ static int rtl_probe ( struct pci_device *pci,
/* Register network device */
if ( ( rc = register_netdev ( netdev ) ) != 0 )
goto err;
registered_netdev = 1;
/* Register non-volatile storage */
if ( rtl->nvo.nvs ) {
if ( ( rc = nvo_register ( &rtl->nvo ) ) != 0 )
goto err;
}
#warning "Hack alert"
rtl_open ( netdev );
@ -534,6 +568,8 @@ static int rtl_probe ( struct pci_device *pci,
/* Disable NIC */
if ( rtl )
rtl_reset ( rtl );
if ( registered_netdev )
unregister_netdev ( netdev );
/* Free net device */
free_netdev ( netdev );
return rc;
@ -552,7 +588,8 @@ static void rtl_remove ( struct pci_device *pci ) {
#warning "Hack alert"
rtl_close ( netdev );
if ( rtl->nvo.nvs )
nvo_unregister ( &rtl->nvo );
unregister_netdev ( netdev );
rtl_reset ( rtl );
free_netdev ( netdev );