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r8169:disable rtl8168ep cmac engine

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Cmac engine is the bridge between driver and dash firmware.
Other os may not disable cmac when leave. And r8169 did not allocate any
resources for cmac engine. Disable it to prevent abnormal system behavior.

Signed-off-by: Chunhao Lin <hau@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Chun-Hao Lin 2014-12-02 16:48:31 +08:00 committed by David S. Miller
parent d6e572911a
commit 003609da5e
1 changed files with 22 additions and 8 deletions
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30
drivers/net/ethernet/realtek/r8169.c
View file

@ -1377,6 +1377,16 @@ DECLARE_RTL_COND(rtl_ocp_tx_cond)
return RTL_R8(IBISR0) & 0x02;
}
static void rtl8168ep_stop_cmac(struct rtl8169_private *tp)
{
void __iomem *ioaddr = tp->mmio_addr;
RTL_W8(IBCR2, RTL_R8(IBCR2) & ~0x01);
rtl_msleep_loop_wait_low(tp, &rtl_ocp_tx_cond, 50, 2000);
RTL_W8(IBISR0, RTL_R8(IBISR0) | 0x20);
RTL_W8(IBCR0, RTL_R8(IBCR0) & ~0x01);
}
static void rtl8168dp_driver_start(struct rtl8169_private *tp)
{
rtl8168_oob_notify(tp, OOB_CMD_DRIVER_START);
@ -1417,12 +1427,7 @@ static void rtl8168dp_driver_stop(struct rtl8169_private *tp)
static void rtl8168ep_driver_stop(struct rtl8169_private *tp)
{
void __iomem *ioaddr = tp->mmio_addr;
RTL_W8(IBCR2, RTL_R8(IBCR2) & ~0x01);
rtl_msleep_loop_wait_low(tp, &rtl_ocp_tx_cond, 50, 2000);
RTL_W8(IBISR0, RTL_R8(IBISR0) | 0x20);
RTL_W8(IBCR0, RTL_R8(IBCR0) & ~0x01);
rtl8168ep_stop_cmac(tp);
ocp_write(tp, 0x01, 0x180, OOB_CMD_DRIVER_STOP);
ocp_write(tp, 0x01, 0x30, ocp_read(tp, 0x01, 0x30) | 0x01);
rtl_msleep_loop_wait_low(tp, &rtl_ep_ocp_read_cond, 10, 10);
@ -6089,6 +6094,8 @@ static void rtl_hw_start_8168ep(struct rtl8169_private *tp)
void __iomem *ioaddr = tp->mmio_addr;
struct pci_dev *pdev = tp->pci_dev;
rtl8168ep_stop_cmac(tp);
RTL_W32(TxConfig, RTL_R32(TxConfig) | TXCFG_AUTO_FIFO);
rtl_eri_write(tp, 0xc8, ERIAR_MASK_0101, 0x00080002, ERIAR_EXGMAC);
@ -8002,6 +8009,12 @@ static void rtl_hw_init_8168g(struct rtl8169_private *tp)
return;
}
static void rtl_hw_init_8168ep(struct rtl8169_private *tp)
{
rtl8168ep_stop_cmac(tp);
rtl_hw_init_8168g(tp);
}
static void rtl_hw_initialize(struct rtl8169_private *tp)
{
switch (tp->mac_version) {
@ -8014,12 +8027,13 @@ static void rtl_hw_initialize(struct rtl8169_private *tp)
case RTL_GIGA_MAC_VER_46:
case RTL_GIGA_MAC_VER_47:
case RTL_GIGA_MAC_VER_48:
rtl_hw_init_8168g(tp);
break;
case RTL_GIGA_MAC_VER_49:
case RTL_GIGA_MAC_VER_50:
case RTL_GIGA_MAC_VER_51:
rtl_hw_init_8168g(tp);
rtl_hw_init_8168ep(tp);
break;
default:
break;
}