[PATCH] net/pch_gbe: Fixed the issue that the multicast address is lost when Rx FIFO overrun happened
From: Takahiro Shimizu <hidden>
Date: 2012-03-23 02:16:51
Also in:
lkml
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Signed-off-by: Takahiro Shimizu <redacted> --- .../net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c | 60 +++++++++++++++++++- 1 files changed, 57 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
index d983e76..56089ca 100644
--- a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
+++ b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c@@ -382,31 +382,85 @@ static void pch_gbe_mac_mar_set(struct pch_gbe_hw *hw, u8 * addr, u32 index) } /** + * pch_gbe_mac_save_mac_addr_regs - Save MAC addresse registers + * @hw: Pointer to the HW structure + * @addr: Pointer to the MAC address + * @index: MAC address array register + */ +static void +pch_gbe_mac_save_mac_addr_regs(struct pch_gbe_hw *hw, + struct pch_gbe_regs_mac_adr *mac_adr, u32 index) +{ + mac_adr->high = ioread32(&hw->reg->mac_adr[index].high); + mac_adr->low = ioread32(&hw->reg->mac_adr[index].low); +} + +/** + * pch_gbe_mac_store_mac_addr_regs - Store MAC addresse registers + * @hw: Pointer to the HW structure + * @addr: Pointer to the MAC address + * @index: MAC address array register + */ +static void +pch_gbe_mac_store_mac_addr_regs(struct pch_gbe_hw *hw, + struct pch_gbe_regs_mac_adr *mac_adr, u32 index) +{ + u32 adrmask; + + adrmask = ioread32(&hw->reg->ADDR_MASK); + iowrite32((adrmask | (0x0001 << index)), &hw->reg->ADDR_MASK); + /* wait busy */ + pch_gbe_wait_clr_bit(&hw->reg->ADDR_MASK, PCH_GBE_BUSY); + /* Set the MAC address to the MAC address xA/xB register */ + iowrite32(mac_adr->high, &hw->reg->mac_adr[index].high); + iowrite32(mac_adr->low, &hw->reg->mac_adr[index].low); + iowrite32((adrmask & ~(0x0001 << index)), &hw->reg->ADDR_MASK); + /* wait busy */ + pch_gbe_wait_clr_bit(&hw->reg->ADDR_MASK, PCH_GBE_BUSY); +} + +#define MAC_ADDR_LIST_NUM 16 +/** * pch_gbe_mac_reset_hw - Reset hardware * @hw: Pointer to the HW structure */ static void pch_gbe_mac_reset_hw(struct pch_gbe_hw *hw) { + struct pch_gbe_regs_mac_adr mac_addr_list[MAC_ADDR_LIST_NUM]; + int i; + /* Read the MAC address. and store to the private data */ pch_gbe_mac_read_mac_addr(hw); + /* Read other MAC addresses */ + for (i = 1; i < MAC_ADDR_LIST_NUM; i++) + pch_gbe_mac_save_mac_addr_regs(hw, &mac_addr_list[i], i); iowrite32(PCH_GBE_ALL_RST, &hw->reg->RESET); #ifdef PCH_GBE_MAC_IFOP_RGMII iowrite32(PCH_GBE_MODE_GMII_ETHER, &hw->reg->MODE); #endif pch_gbe_wait_clr_bit(&hw->reg->RESET, PCH_GBE_ALL_RST); - /* Setup the receive address */ + /* Setup the receive addresses */ pch_gbe_mac_mar_set(hw, hw->mac.addr, 0); + for (i = 1; i < MAC_ADDR_LIST_NUM; i++) + pch_gbe_mac_store_mac_addr_regs(hw, &mac_addr_list[i], i); return; } static void pch_gbe_mac_reset_rx(struct pch_gbe_hw *hw) { - /* Read the MAC address. and store to the private data */ + struct pch_gbe_regs_mac_adr mac_addr_list[MAC_ADDR_LIST_NUM]; + int i; + + /* Read the MAC addresses. and store to the private data */ pch_gbe_mac_read_mac_addr(hw); + for (i = 1; i < MAC_ADDR_LIST_NUM; i++) + pch_gbe_mac_save_mac_addr_regs(hw, &mac_addr_list[i], i); iowrite32(PCH_GBE_RX_RST, &hw->reg->RESET); pch_gbe_wait_clr_bit_irq(&hw->reg->RESET, PCH_GBE_RX_RST); - /* Setup the MAC address */ + /* Setup the MAC addresses */ pch_gbe_mac_mar_set(hw, hw->mac.addr, 0); + for (i = 1; i < MAC_ADDR_LIST_NUM; i++) + pch_gbe_mac_store_mac_addr_regs(hw, &mac_addr_list[i], i); return; }
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1.7.4.4