From: RongQing.Li Date: Fri, 27 Apr 2012 19:53:41 +0000 (+0000) Subject: pch_gbe: reprogram multicast address register on reset X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d344c4f3103c6faa1635b155d8f516e8a7e0aa4e;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git pch_gbe: reprogram multicast address register on reset The reset logic after a Rx FIFO overrun will clear the programmed multicast addresses. This patch fixes the issue by reprogramming the registers after the reset. The commit eefc48b ("pch_gbe: reprogram multicast address register on reset") tried to fix this problem, but it introduces unnecessary codes. In fact, all multicast addresses have been saved in netdev->mc, So we can call pch_gbe_set_multi() directly after reset_hw and reset_rx. This commit kills 50+ line codes Cc: Richard Cochran Cc: Takahiro Shimizu Signed-off-by: RongQing.Li Acked-by: Richard Cochran Signed-off-by: David S. Miller --- 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 107f41a46a41..9dc7e5023671 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 @@ -120,6 +120,7 @@ static unsigned int copybreak __read_mostly = PCH_GBE_COPYBREAK_DEFAULT; static int pch_gbe_mdio_read(struct net_device *netdev, int addr, int reg); static void pch_gbe_mdio_write(struct net_device *netdev, int addr, int reg, int data); +static void pch_gbe_set_multi(struct net_device *netdev); #ifdef CONFIG_PCH_PTP static struct sock_filter ptp_filter[] = { @@ -390,59 +391,14 @@ static void pch_gbe_mac_mar_set(struct pch_gbe_hw *hw, u8 * addr, u32 index) pch_gbe_wait_clr_bit(&hw->reg->ADDR_MASK, PCH_GBE_BUSY); } -/** - * 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); @@ -450,26 +406,17 @@ static void pch_gbe_mac_reset_hw(struct pch_gbe_hw *hw) pch_gbe_wait_clr_bit(&hw->reg->RESET, PCH_GBE_ALL_RST); /* 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) { - 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 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; } @@ -836,6 +783,8 @@ void pch_gbe_reinit_locked(struct pch_gbe_adapter *adapter) void pch_gbe_reset(struct pch_gbe_adapter *adapter) { pch_gbe_mac_reset_hw(&adapter->hw); + /* reprogram multicast address register after reset */ + pch_gbe_set_multi(adapter->netdev); /* Setup the receive address. */ pch_gbe_mac_init_rx_addrs(&adapter->hw, PCH_GBE_MAR_ENTRIES); if (pch_gbe_hal_init_hw(&adapter->hw)) @@ -1398,6 +1347,8 @@ static void pch_gbe_stop_receive(struct pch_gbe_adapter *adapter) /* Stop Receive */ pch_gbe_mac_reset_rx(hw); } + /* reprogram multicast address register after reset */ + pch_gbe_set_multi(adapter->netdev); } static void pch_gbe_start_receive(struct pch_gbe_hw *hw) @@ -1980,7 +1931,6 @@ static int pch_gbe_request_irq(struct pch_gbe_adapter *adapter) } -static void pch_gbe_set_multi(struct net_device *netdev); /** * pch_gbe_up - Up GbE network device * @adapter: Board private structure