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[intelxl] Read MAC address from PRTPM_SA[HL] instead of PRTGL_SA[HL]

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The datasheet is fairly incomprehensible in terms of identifying the
appropriate MAC address for use by the physical function driver.
Choose to read the MAC address from PRTPM_SAH and PRTPM_SAL, which at
least matches the MAC address as selected by the Linux i40e driver.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2020-11-20 19:12:24 +00:00
parent e10a40d41f
commit b6eb17cbd7
2 changed files with 13 additions and 5 deletions
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12
src/drivers/net/intelxl.c
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@@ -87,15 +87,16 @@ static int intelxl_reset ( struct intelxl_nic *intelxl ) {
static int intelxl_fetch_mac ( struct intelxl_nic *intelxl,
struct net_device *netdev ) {
union intelxl_receive_address mac;
uint32_t prtgl_sal;
uint32_t prtpm_sal;
uint32_t prtpm_sah;
uint32_t prtgl_sah;
size_t mfs;
/* Read NVM-loaded address */
prtgl_sal = readl ( intelxl->regs + INTELXL_PRTGL_SAL );
prtgl_sah = readl ( intelxl->regs + INTELXL_PRTGL_SAH );
mac.reg.low = cpu_to_le32 ( prtgl_sal );
mac.reg.high = cpu_to_le32 ( prtgl_sah );
prtpm_sal = readl ( intelxl->regs + INTELXL_PRTPM_SAL );
prtpm_sah = readl ( intelxl->regs + INTELXL_PRTPM_SAH );
mac.reg.low = cpu_to_le32 ( prtpm_sal );
mac.reg.high = cpu_to_le32 ( prtpm_sah );
/* Check that address is valid */
if ( ! is_valid_ether_addr ( mac.raw ) ) {
@@ -110,6 +111,7 @@ static int intelxl_fetch_mac ( struct intelxl_nic *intelxl,
memcpy ( netdev->hw_addr, mac.raw, ETH_ALEN );
/* Get maximum frame size */
prtgl_sah = readl ( intelxl->regs + INTELXL_PRTGL_SAH );
mfs = INTELXL_PRTGL_SAH_MFS_GET ( prtgl_sah );
netdev->max_pkt_len = ( mfs - 4 /* CRC */ );