From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chien Tung Subject: [PATCH] RDMA/nes: fix CX4 link problem in back-to-back configuration Date: Wed, 3 Mar 2010 13:13:26 -0600 Message-ID: <20100303191326.GA7916@ctung-MOBL> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Roland Dreier Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rdma@vger.kernel.org commit 09124e1913cf2140941f60ab4fdf8576e1e8fd8d took out too much code and broke CX4 link detection in back-to-back configuration. This will put back the code that does the link check. Signed-off-by: Chien Tung --- drivers/infiniband/hw/nes/nes_nic.c | 30 ++++++++++++++++++++++++++++-- 1 files changed, 28 insertions(+), 2 deletions(-) diff --git a/drivers/infiniband/hw/nes/nes_nic.c b/drivers/infiniband/hw/nes/nes_nic.c index 7dd6ce6..a60efee 100644 --- a/drivers/infiniband/hw/nes/nes_nic.c +++ b/drivers/infiniband/hw/nes/nes_nic.c @@ -1582,7 +1582,6 @@ struct net_device *nes_netdev_init(struct nes_device *nesdev, struct nes_vnic *nesvnic; struct net_device *netdev; struct nic_qp_map *curr_qp_map; - u32 u32temp; u8 phy_type = nesdev->nesadapter->phy_type[nesdev->mac_index]; netdev = alloc_etherdev(sizeof(struct nes_vnic)); @@ -1694,6 +1693,10 @@ struct net_device *nes_netdev_init(struct nes_device *nesdev, ((phy_type == NES_PHY_TYPE_PUMA_1G) && (((PCI_FUNC(nesdev->pcidev->devfn) == 1) && (nesdev->mac_index == 2)) || ((PCI_FUNC(nesdev->pcidev->devfn) == 2) && (nesdev->mac_index == 1)))))) { + u32 u32temp; + u32 link_mask; + u32 link_val; + u32temp = nes_read_indexed(nesdev, NES_IDX_PHY_PCS_CONTROL_STATUS0 + (0x200 * (nesdev->mac_index & 1))); if (phy_type != NES_PHY_TYPE_PUMA_1G) { @@ -1702,13 +1705,36 @@ struct net_device *nes_netdev_init(struct nes_device *nesdev, (0x200 * (nesdev->mac_index & 1)), u32temp); } + /* Check and set linkup here. This is for back to back */ + /* configuration where second port won't get link interrupt */ + switch (phy_type) { + case NES_PHY_TYPE_PUMA_1G: + if (nesdev->mac_index < 2) { + link_mask = 0x01010000; + link_val = 0x01010000; + } else { + link_mask = 0x02020000; + link_val = 0x02020000; + } + break; + default: + link_mask = 0x0f1f0000; + link_val = 0x0f0f0000; + break; + } + + u32temp = nes_read_indexed(nesdev, + NES_IDX_PHY_PCS_CONTROL_STATUS0 + + (0x200 * (nesdev->mac_index & 1))); + if ((u32temp & link_mask) == link_val) + nesvnic->linkup = 1; + /* clear the MAC interrupt status, assumes direct logical to physical mapping */ u32temp = nes_read_indexed(nesdev, NES_IDX_MAC_INT_STATUS + (0x200 * nesdev->mac_index)); nes_debug(NES_DBG_INIT, "Phy interrupt status = 0x%X.\n", u32temp); nes_write_indexed(nesdev, NES_IDX_MAC_INT_STATUS + (0x200 * nesdev->mac_index), u32temp); nes_init_phy(nesdev); - } return netdev; -- 1.6.4.2 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html