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Message-Id: <1452248083-78628-4-git-send-email-jeffrey.t.kirsher@intel.com>
Date: Fri, 8 Jan 2016 02:14:41 -0800
From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To: davem@...emloft.net
Cc: Sowmini Varadhan <sowmini.varadhan@...cle.com>,
netdev@...r.kernel.org, nhorman@...hat.com, sassmann@...hat.com,
jogreene@...hat.com, Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 3/5] i40e: Look up MAC address in Open Firmware or IDPROM
From: Sowmini Varadhan <sowmini.varadhan@...cle.com>
This is the i40e equivalent of commit c762dff24c06 ("ixgbe: Look up MAC
address in Open Firmware or IDPROM").
As with that fix, attempt to look up the MAC address in Open Firmware
on systems that support it, and use IDPROM on SPARC if no OF address
is found.
In the case of the i40e there is an assumption that the default mac
address has already been set up as the primary mac filter on probe,
so if this filter is obtained from the Open Firmware or IDPROM, an
explicit write is needed via i40e_aq_mac_address_write() and
i40e_aq_add_macvlan() invocation.
The I40E_FLAG_PF_MAC flag in the platform-private i40e_pf structure
tracks whether a platform-specific mac address was found, in which
case calls to i40e_aq_mac_address_write() and i40e_aq_add_macvlan()
will be triggered.
Reviewed-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@...cle.com>
Acked-by: Shannon Nelson <shannon.nelson@...el.com>
Tested-by: Andrew Bowers <andrewx.bowers@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
drivers/net/ethernet/intel/i40e/i40e.h | 1 +
drivers/net/ethernet/intel/i40e/i40e_main.c | 90 +++++++++++++++++++++++++++++
2 files changed, 91 insertions(+)
diff --git a/drivers/net/ethernet/intel/i40e/i40e.h b/drivers/net/ethernet/intel/i40e/i40e.h
index c202f9b..68f2204 100644
--- a/drivers/net/ethernet/intel/i40e/i40e.h
+++ b/drivers/net/ethernet/intel/i40e/i40e.h
@@ -339,6 +339,7 @@ struct i40e_pf {
#define I40E_FLAG_VEB_MODE_ENABLED BIT_ULL(40)
#define I40E_FLAG_GENEVE_OFFLOAD_CAPABLE BIT_ULL(41)
#define I40E_FLAG_NO_PCI_LINK_CHECK BIT_ULL(42)
+#define I40E_FLAG_PF_MAC BIT_ULL(50)
/* tracks features that get auto disabled by errors */
u64 auto_disable_flags;
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 1598fb3..2914806 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -24,6 +24,15 @@
*
******************************************************************************/
+#include <linux/etherdevice.h>
+#include <linux/of_net.h>
+#include <linux/pci.h>
+
+#ifdef CONFIG_SPARC
+#include <asm/idprom.h>
+#include <asm/prom.h>
+#endif
+
/* Local includes */
#include "i40e.h"
#include "i40e_diag.h"
@@ -9522,6 +9531,44 @@ err_vsi:
}
/**
+ * i40e_macaddr_init - explicitly write the mac address filters.
+ *
+ * @vsi: pointer to the vsi.
+ * @macaddr: the MAC address
+ *
+ * This is needed when the macaddr has been obtained by other
+ * means than the default, e.g., from Open Firmware or IDPROM.
+ * Returns 0 on success, negative on failure
+ **/
+static int i40e_macaddr_init(struct i40e_vsi *vsi, u8 *macaddr)
+{
+ int ret;
+ struct i40e_aqc_add_macvlan_element_data element;
+
+ ret = i40e_aq_mac_address_write(&vsi->back->hw,
+ I40E_AQC_WRITE_TYPE_LAA_WOL,
+ macaddr, NULL);
+ if (ret) {
+ dev_info(&vsi->back->pdev->dev,
+ "Addr change for VSI failed: %d\n", ret);
+ return -EADDRNOTAVAIL;
+ }
+
+ memset(&element, 0, sizeof(element));
+ ether_addr_copy(element.mac_addr, macaddr);
+ element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
+ ret = i40e_aq_add_macvlan(&vsi->back->hw, vsi->seid, &element, 1, NULL);
+ if (ret) {
+ dev_info(&vsi->back->pdev->dev,
+ "add filter failed err %s aq_err %s\n",
+ i40e_stat_str(&vsi->back->hw, ret),
+ i40e_aq_str(&vsi->back->hw,
+ vsi->back->hw.aq.asq_last_status));
+ }
+ return ret;
+}
+
+/**
* i40e_vsi_setup - Set up a VSI by a given type
* @pf: board private structure
* @type: VSI type
@@ -9645,6 +9692,17 @@ struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
switch (vsi->type) {
/* setup the netdev if needed */
case I40E_VSI_MAIN:
+ /* Apply relevant filters if a platform-specific mac
+ * address was selected.
+ */
+ if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
+ ret = i40e_macaddr_init(vsi, pf->hw.mac.addr);
+ if (ret) {
+ dev_warn(&pf->pdev->dev,
+ "could not set up macaddr; err %d\n",
+ ret);
+ }
+ }
case I40E_VSI_VMDQ2:
case I40E_VSI_FCOE:
ret = i40e_config_netdev(vsi);
@@ -10474,6 +10532,36 @@ static void i40e_print_features(struct i40e_pf *pf)
}
/**
+ * i40e_get_platform_mac_addr - get platform-specific MAC address
+ *
+ * @pdev: PCI device information struct
+ * @pf: board private structure
+ *
+ * Look up the MAC address in Open Firmware on systems that support it,
+ * and use IDPROM on SPARC if no OF address is found. On return, the
+ * I40E_FLAG_PF_MAC will be wset in pf->flags if a platform-specific value
+ * has been selected.
+ **/
+static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
+{
+ struct device_node *dp = pci_device_to_OF_node(pdev);
+ const unsigned char *addr;
+ u8 *mac_addr = pf->hw.mac.addr;
+
+ pf->flags &= ~I40E_FLAG_PF_MAC;
+ addr = of_get_mac_address(dp);
+ if (addr) {
+ ether_addr_copy(mac_addr, addr);
+ pf->flags |= I40E_FLAG_PF_MAC;
+#ifdef CONFIG_SPARC
+ } else {
+ ether_addr_copy(mac_addr, idprom->id_ethaddr);
+ pf->flags |= I40E_FLAG_PF_MAC;
+#endif /* CONFIG_SPARC */
+ }
+}
+
+/**
* i40e_probe - Device initialization routine
* @pdev: PCI device information struct
* @ent: entry in i40e_pci_tbl
@@ -10683,6 +10771,8 @@ static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
}
i40e_get_mac_addr(hw, hw->mac.addr);
+ /* allow a platform config to override the HW addr */
+ i40e_get_platform_mac_addr(pdev, pf);
if (!is_valid_ether_addr(hw->mac.addr)) {
dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
err = -EIO;
--
2.5.0
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