sfc: Export boot configuration in EEPROM through ethtool
Extend the SPI device setup code to support this.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/net/sfc/ethtool.c b/drivers/net/sfc/ethtool.c
index 6142c3a..72a2eb2 100644
--- a/drivers/net/sfc/ethtool.c
+++ b/drivers/net/sfc/ethtool.c
@@ -17,6 +17,7 @@
#include "ethtool.h"
#include "falcon.h"
#include "gmii.h"
+#include "spi.h"
#include "mac.h"
const char *efx_loopback_mode_names[] = {
@@ -171,6 +172,11 @@
/* Number of ethtool statistics */
#define EFX_ETHTOOL_NUM_STATS ARRAY_SIZE(efx_ethtool_stats)
+/* EEPROM range with gPXE configuration */
+#define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
+#define EFX_ETHTOOL_EEPROM_MIN 0x100U
+#define EFX_ETHTOOL_EEPROM_MAX 0x400U
+
/**************************************************************************
*
* Ethtool operations
@@ -532,6 +538,49 @@
return efx->link_up;
}
+static int efx_ethtool_get_eeprom_len(struct net_device *net_dev)
+{
+ struct efx_nic *efx = netdev_priv(net_dev);
+ struct efx_spi_device *spi = efx->spi_eeprom;
+
+ if (!spi)
+ return 0;
+ return min(spi->size, EFX_ETHTOOL_EEPROM_MAX) -
+ min(spi->size, EFX_ETHTOOL_EEPROM_MIN);
+}
+
+static int efx_ethtool_get_eeprom(struct net_device *net_dev,
+ struct ethtool_eeprom *eeprom, u8 *buf)
+{
+ struct efx_nic *efx = netdev_priv(net_dev);
+ struct efx_spi_device *spi = efx->spi_eeprom;
+ size_t len;
+ int rc;
+
+ rc = falcon_spi_read(spi, eeprom->offset + EFX_ETHTOOL_EEPROM_MIN,
+ eeprom->len, &len, buf);
+ eeprom->magic = EFX_ETHTOOL_EEPROM_MAGIC;
+ eeprom->len = len;
+ return rc;
+}
+
+static int efx_ethtool_set_eeprom(struct net_device *net_dev,
+ struct ethtool_eeprom *eeprom, u8 *buf)
+{
+ struct efx_nic *efx = netdev_priv(net_dev);
+ struct efx_spi_device *spi = efx->spi_eeprom;
+ size_t len;
+ int rc;
+
+ if (eeprom->magic != EFX_ETHTOOL_EEPROM_MAGIC)
+ return -EINVAL;
+
+ rc = falcon_spi_write(spi, eeprom->offset + EFX_ETHTOOL_EEPROM_MIN,
+ eeprom->len, &len, buf);
+ eeprom->len = len;
+ return rc;
+}
+
static int efx_ethtool_get_coalesce(struct net_device *net_dev,
struct ethtool_coalesce *coalesce)
{
@@ -653,6 +702,9 @@
.get_drvinfo = efx_ethtool_get_drvinfo,
.nway_reset = efx_ethtool_nway_reset,
.get_link = efx_ethtool_get_link,
+ .get_eeprom_len = efx_ethtool_get_eeprom_len,
+ .get_eeprom = efx_ethtool_get_eeprom,
+ .set_eeprom = efx_ethtool_set_eeprom,
.get_coalesce = efx_ethtool_get_coalesce,
.set_coalesce = efx_ethtool_set_coalesce,
.get_pauseparam = efx_ethtool_get_pauseparam,