bnx2x, cnic: Consolidate iSCSI/FCoE shared mem logic in bnx2x

Move all shared mem code to bnx2x to avoid code duplication.  bnx2x now
performs:

- Read the FCoE and iSCSI max connection information.
- Read the iSCSI and FCoE MACs from NPAR configuration in shmem.
- Block the CNIC for the current function if there is neither FCoE nor
  iSCSI valid configuration by returning NULL from bnx2x_cnic_probe().

Signed-off-by: Vladislav Zolotarov <vladz@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 18 insertions, 125 deletions

diff --git a/drivers/net/cnic.c b/drivers/net/cnic.c
index c82049635139..2d2d28f58e91 100644
--- a/drivers/net/cnic.c
+++ b/drivers/net/cnic.c
@@ -4179,6 +4179,14 @@ static void cnic_enable_bnx2_int(struct cnic_dev *dev)
                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
 }
 
+static void cnic_get_bnx2_iscsi_info(struct cnic_dev *dev)
+{
+        u32 max_conn;
+
+        max_conn = cnic_reg_rd_ind(dev, BNX2_FW_MAX_ISCSI_CONN);
+        dev->max_iscsi_conn = max_conn;
+}
+
 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
 {
         struct cnic_local *cp = dev->cnic_priv;
@@ -4503,6 +4511,8 @@ static int cnic_start_bnx2_hw(struct cnic_dev *dev)
                 return err;
         }
 
+        cnic_get_bnx2_iscsi_info(dev);
+
         return 0;
 }
 
@@ -4714,129 +4724,6 @@ static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
         cp->rx_cons = *cp->rx_cons_ptr;
 }
 
-static int cnic_read_bnx2x_iscsi_mac(struct cnic_dev *dev, u32 upper_addr,
-                                     u32 lower_addr)
-{
-        u32 val;
-        u8 mac[6];
-
-        val = CNIC_RD(dev, upper_addr);
-
-        mac[0] = (u8) (val >> 8);
-        mac[1] = (u8) val;
-
-        val = CNIC_RD(dev, lower_addr);
-
-        mac[2] = (u8) (val >> 24);
-        mac[3] = (u8) (val >> 16);
-        mac[4] = (u8) (val >> 8);
-        mac[5] = (u8) val;
-
-        if (is_valid_ether_addr(mac)) {
-                memcpy(dev->mac_addr, mac, 6);
-                return 0;
-        } else {
-                return -EINVAL;
-        }
-}
-
-static void cnic_get_bnx2x_iscsi_info(struct cnic_dev *dev)
-{
-        struct cnic_local *cp = dev->cnic_priv;
-        u32 base, base2, addr, addr1, val;
-        int port = CNIC_PORT(cp);
-
-        dev->max_iscsi_conn = 0;
-        base = CNIC_RD(dev, MISC_REG_SHARED_MEM_ADDR);
-        if (base == 0)
-                return;
-
-        base2 = CNIC_RD(dev, (CNIC_PATH(cp) ? MISC_REG_GENERIC_CR_1 :
-                                              MISC_REG_GENERIC_CR_0));
-        addr = BNX2X_SHMEM_ADDR(base,
-                dev_info.port_hw_config[port].iscsi_mac_upper);
-
-        addr1 = BNX2X_SHMEM_ADDR(base,
-                dev_info.port_hw_config[port].iscsi_mac_lower);
-
-        cnic_read_bnx2x_iscsi_mac(dev, addr, addr1);
-
-        addr = BNX2X_SHMEM_ADDR(base, validity_map[port]);
-        val = CNIC_RD(dev, addr);
-
-        if (!(val & SHR_MEM_VALIDITY_LIC_NO_KEY_IN_EFFECT)) {
-                u16 val16;
-
-                addr = BNX2X_SHMEM_ADDR(base,
-                                drv_lic_key[port].max_iscsi_init_conn);
-                val16 = CNIC_RD16(dev, addr);
-
-                if (val16)
-                        val16 ^= 0x1e1e;
-                dev->max_iscsi_conn = val16;
-        }
-
-        if (BNX2X_CHIP_IS_E2(cp->chip_id))
-                dev->max_fcoe_conn = BNX2X_FCOE_NUM_CONNECTIONS;
-
-        if (BNX2X_CHIP_IS_E1H(cp->chip_id) || BNX2X_CHIP_IS_E2(cp->chip_id)) {
-                int func = CNIC_FUNC(cp);
-                u32 mf_cfg_addr;
-
-                if (BNX2X_SHMEM2_HAS(base2, mf_cfg_addr))
-                        mf_cfg_addr = CNIC_RD(dev, BNX2X_SHMEM2_ADDR(base2,
-                                              mf_cfg_addr));
-                else
-                        mf_cfg_addr = base + BNX2X_SHMEM_MF_BLK_OFFSET;
-
-                if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
-                        /* Must determine if the MF is SD vs SI mode */
-                        addr = BNX2X_SHMEM_ADDR(base,
-                                        dev_info.shared_feature_config.config);
-                        val = CNIC_RD(dev, addr);
-                        if ((val & SHARED_FEAT_CFG_FORCE_SF_MODE_MASK) ==
-                            SHARED_FEAT_CFG_FORCE_SF_MODE_SWITCH_INDEPT) {
-                                int rc;
-
-                                /* MULTI_FUNCTION_SI mode */
-                                addr = BNX2X_MF_CFG_ADDR(mf_cfg_addr,
-                                        func_ext_config[func].func_cfg);
-                                val = CNIC_RD(dev, addr);
-                                if (!(val & MACP_FUNC_CFG_FLAGS_ISCSI_OFFLOAD))
-                                        dev->max_iscsi_conn = 0;
-
-                                if (!(val & MACP_FUNC_CFG_FLAGS_FCOE_OFFLOAD))
-                                        dev->max_fcoe_conn = 0;
-
-                                addr = BNX2X_MF_CFG_ADDR(mf_cfg_addr,
-                                        func_ext_config[func].
-                                        iscsi_mac_addr_upper);
-                                addr1 = BNX2X_MF_CFG_ADDR(mf_cfg_addr,
-                                        func_ext_config[func].
-                                        iscsi_mac_addr_lower);
-                                rc = cnic_read_bnx2x_iscsi_mac(dev, addr,
-                                                                addr1);
-                                if (rc && func > 1)
-                                        dev->max_iscsi_conn = 0;
-
-                                return;
-                        }
-                }
-
-                addr = BNX2X_MF_CFG_ADDR(mf_cfg_addr,
-                        func_mf_config[func].e1hov_tag);
-
-                val = CNIC_RD(dev, addr);
-                val &= FUNC_MF_CFG_E1HOV_TAG_MASK;
-                if (val != FUNC_MF_CFG_E1HOV_TAG_DEFAULT) {
-                        dev->max_fcoe_conn = 0;
-                        dev->max_iscsi_conn = 0;
-                }
-        }
-        if (!is_valid_ether_addr(dev->mac_addr))
-                dev->max_iscsi_conn = 0;
-}
-
 static void cnic_init_bnx2x_kcq(struct cnic_dev *dev)
 {
         struct cnic_local *cp = dev->cnic_priv;
@@ -4918,8 +4805,6 @@ static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
 
         cnic_init_bnx2x_kcq(dev);
 
-        cnic_get_bnx2x_iscsi_info(dev);
-
         /* Only 1 EQ */
         CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
@@ -5352,6 +5237,14 @@ static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
         cdev->pcidev = pdev;
         cp->chip_id = ethdev->chip_id;
 
+        if (!(ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI))
+                cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
+        if (BNX2X_CHIP_IS_E2(cp->chip_id) &&
+            !(ethdev->drv_state & CNIC_DRV_STATE_NO_FCOE))
+                cdev->max_fcoe_conn = ethdev->max_fcoe_conn;
+
+        memcpy(cdev->mac_addr, ethdev->iscsi_mac, 6);
+
         cp->cnic_ops = &cnic_bnx2x_ops;
         cp->start_hw = cnic_start_bnx2x_hw;
         cp->stop_hw = cnic_stop_bnx2x_hw;