diff options
Diffstat (limited to 'drivers/net/ethernet/wangxun/libwx/wx_hw.c')
-rw-r--r-- | drivers/net/ethernet/wangxun/libwx/wx_hw.c | 272 |
1 files changed, 271 insertions, 1 deletions
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_hw.c b/drivers/net/ethernet/wangxun/libwx/wx_hw.c index ca409b4054d0..39a9aeee7aab 100644 --- a/drivers/net/ethernet/wangxun/libwx/wx_hw.c +++ b/drivers/net/ethernet/wangxun/libwx/wx_hw.c @@ -1182,12 +1182,28 @@ static void wx_enable_sec_rx_path(struct wx *wx) WX_WRITE_FLUSH(wx); } +static void wx_vlan_strip_control(struct wx *wx, bool enable) +{ + int i, j; + + for (i = 0; i < wx->num_rx_queues; i++) { + struct wx_ring *ring = wx->rx_ring[i]; + + j = ring->reg_idx; + wr32m(wx, WX_PX_RR_CFG(j), WX_PX_RR_CFG_VLAN, + enable ? WX_PX_RR_CFG_VLAN : 0); + } +} + void wx_set_rx_mode(struct net_device *netdev) { struct wx *wx = netdev_priv(netdev); + netdev_features_t features; u32 fctrl, vmolr, vlnctrl; int count; + features = netdev->features; + /* Check for Promiscuous and All Multicast modes */ fctrl = rd32(wx, WX_PSR_CTL); fctrl &= ~(WX_PSR_CTL_UPE | WX_PSR_CTL_MPE); @@ -1254,6 +1270,13 @@ void wx_set_rx_mode(struct net_device *netdev) wr32(wx, WX_PSR_VLAN_CTL, vlnctrl); wr32(wx, WX_PSR_CTL, fctrl); wr32(wx, WX_PSR_VM_L2CTL(0), vmolr); + + if ((features & NETIF_F_HW_VLAN_CTAG_RX) && + (features & NETIF_F_HW_VLAN_STAG_RX)) + wx_vlan_strip_control(wx, true); + else + wx_vlan_strip_control(wx, false); + } EXPORT_SYMBOL(wx_set_rx_mode); @@ -1462,6 +1485,16 @@ static void wx_configure_tx(struct wx *wx) WX_MAC_TX_CFG_TE, WX_MAC_TX_CFG_TE); } +static void wx_restore_vlan(struct wx *wx) +{ + u16 vid = 1; + + wx_vlan_rx_add_vid(wx->netdev, htons(ETH_P_8021Q), 0); + + for_each_set_bit_from(vid, wx->active_vlans, VLAN_N_VID) + wx_vlan_rx_add_vid(wx->netdev, htons(ETH_P_8021Q), vid); +} + /** * wx_configure_rx - Configure Receive Unit after Reset * @wx: pointer to private structure @@ -1527,7 +1560,7 @@ void wx_configure(struct wx *wx) wx_configure_port(wx); wx_set_rx_mode(wx->netdev); - + wx_restore_vlan(wx); wx_enable_sec_rx_path(wx); wx_configure_tx(wx); @@ -1727,4 +1760,241 @@ int wx_sw_init(struct wx *wx) } EXPORT_SYMBOL(wx_sw_init); +/** + * wx_find_vlvf_slot - find the vlanid or the first empty slot + * @wx: pointer to hardware structure + * @vlan: VLAN id to write to VLAN filter + * + * return the VLVF index where this VLAN id should be placed + * + **/ +static int wx_find_vlvf_slot(struct wx *wx, u32 vlan) +{ + u32 bits = 0, first_empty_slot = 0; + int regindex; + + /* short cut the special case */ + if (vlan == 0) + return 0; + + /* Search for the vlan id in the VLVF entries. Save off the first empty + * slot found along the way + */ + for (regindex = 1; regindex < WX_PSR_VLAN_SWC_ENTRIES; regindex++) { + wr32(wx, WX_PSR_VLAN_SWC_IDX, regindex); + bits = rd32(wx, WX_PSR_VLAN_SWC); + if (!bits && !(first_empty_slot)) + first_empty_slot = regindex; + else if ((bits & 0x0FFF) == vlan) + break; + } + + if (regindex >= WX_PSR_VLAN_SWC_ENTRIES) { + if (first_empty_slot) + regindex = first_empty_slot; + else + regindex = -ENOMEM; + } + + return regindex; +} + +/** + * wx_set_vlvf - Set VLAN Pool Filter + * @wx: pointer to hardware structure + * @vlan: VLAN id to write to VLAN filter + * @vind: VMDq output index that maps queue to VLAN id in VFVFB + * @vlan_on: boolean flag to turn on/off VLAN in VFVF + * @vfta_changed: pointer to boolean flag which indicates whether VFTA + * should be changed + * + * Turn on/off specified bit in VLVF table. + **/ +static int wx_set_vlvf(struct wx *wx, u32 vlan, u32 vind, bool vlan_on, + bool *vfta_changed) +{ + int vlvf_index; + u32 vt, bits; + + /* If VT Mode is set + * Either vlan_on + * make sure the vlan is in VLVF + * set the vind bit in the matching VLVFB + * Or !vlan_on + * clear the pool bit and possibly the vind + */ + vt = rd32(wx, WX_CFG_PORT_CTL); + if (!(vt & WX_CFG_PORT_CTL_NUM_VT_MASK)) + return 0; + + vlvf_index = wx_find_vlvf_slot(wx, vlan); + if (vlvf_index < 0) + return vlvf_index; + + wr32(wx, WX_PSR_VLAN_SWC_IDX, vlvf_index); + if (vlan_on) { + /* set the pool bit */ + if (vind < 32) { + bits = rd32(wx, WX_PSR_VLAN_SWC_VM_L); + bits |= (1 << vind); + wr32(wx, WX_PSR_VLAN_SWC_VM_L, bits); + } else { + bits = rd32(wx, WX_PSR_VLAN_SWC_VM_H); + bits |= (1 << (vind - 32)); + wr32(wx, WX_PSR_VLAN_SWC_VM_H, bits); + } + } else { + /* clear the pool bit */ + if (vind < 32) { + bits = rd32(wx, WX_PSR_VLAN_SWC_VM_L); + bits &= ~(1 << vind); + wr32(wx, WX_PSR_VLAN_SWC_VM_L, bits); + bits |= rd32(wx, WX_PSR_VLAN_SWC_VM_H); + } else { + bits = rd32(wx, WX_PSR_VLAN_SWC_VM_H); + bits &= ~(1 << (vind - 32)); + wr32(wx, WX_PSR_VLAN_SWC_VM_H, bits); + bits |= rd32(wx, WX_PSR_VLAN_SWC_VM_L); + } + } + + if (bits) { + wr32(wx, WX_PSR_VLAN_SWC, (WX_PSR_VLAN_SWC_VIEN | vlan)); + if (!vlan_on && vfta_changed) + *vfta_changed = false; + } else { + wr32(wx, WX_PSR_VLAN_SWC, 0); + } + + return 0; +} + +/** + * wx_set_vfta - Set VLAN filter table + * @wx: pointer to hardware structure + * @vlan: VLAN id to write to VLAN filter + * @vind: VMDq output index that maps queue to VLAN id in VFVFB + * @vlan_on: boolean flag to turn on/off VLAN in VFVF + * + * Turn on/off specified VLAN in the VLAN filter table. + **/ +static int wx_set_vfta(struct wx *wx, u32 vlan, u32 vind, bool vlan_on) +{ + u32 bitindex, vfta, targetbit; + bool vfta_changed = false; + int regindex, ret; + + /* this is a 2 part operation - first the VFTA, then the + * VLVF and VLVFB if VT Mode is set + * We don't write the VFTA until we know the VLVF part succeeded. + */ + + /* Part 1 + * The VFTA is a bitstring made up of 128 32-bit registers + * that enable the particular VLAN id, much like the MTA: + * bits[11-5]: which register + * bits[4-0]: which bit in the register + */ + regindex = (vlan >> 5) & 0x7F; + bitindex = vlan & 0x1F; + targetbit = (1 << bitindex); + /* errata 5 */ + vfta = wx->mac.vft_shadow[regindex]; + if (vlan_on) { + if (!(vfta & targetbit)) { + vfta |= targetbit; + vfta_changed = true; + } + } else { + if ((vfta & targetbit)) { + vfta &= ~targetbit; + vfta_changed = true; + } + } + /* Part 2 + * Call wx_set_vlvf to set VLVFB and VLVF + */ + ret = wx_set_vlvf(wx, vlan, vind, vlan_on, &vfta_changed); + if (ret != 0) + return ret; + + if (vfta_changed) + wr32(wx, WX_PSR_VLAN_TBL(regindex), vfta); + wx->mac.vft_shadow[regindex] = vfta; + + return 0; +} + +/** + * wx_clear_vfta - Clear VLAN filter table + * @wx: pointer to hardware structure + * + * Clears the VLAN filer table, and the VMDq index associated with the filter + **/ +static void wx_clear_vfta(struct wx *wx) +{ + u32 offset; + + for (offset = 0; offset < wx->mac.vft_size; offset++) { + wr32(wx, WX_PSR_VLAN_TBL(offset), 0); + wx->mac.vft_shadow[offset] = 0; + } + + for (offset = 0; offset < WX_PSR_VLAN_SWC_ENTRIES; offset++) { + wr32(wx, WX_PSR_VLAN_SWC_IDX, offset); + wr32(wx, WX_PSR_VLAN_SWC, 0); + wr32(wx, WX_PSR_VLAN_SWC_VM_L, 0); + wr32(wx, WX_PSR_VLAN_SWC_VM_H, 0); + } +} + +int wx_vlan_rx_add_vid(struct net_device *netdev, + __be16 proto, u16 vid) +{ + struct wx *wx = netdev_priv(netdev); + + /* add VID to filter table */ + wx_set_vfta(wx, vid, VMDQ_P(0), true); + set_bit(vid, wx->active_vlans); + + return 0; +} +EXPORT_SYMBOL(wx_vlan_rx_add_vid); + +int wx_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid) +{ + struct wx *wx = netdev_priv(netdev); + + /* remove VID from filter table */ + if (vid) + wx_set_vfta(wx, vid, VMDQ_P(0), false); + clear_bit(vid, wx->active_vlans); + + return 0; +} +EXPORT_SYMBOL(wx_vlan_rx_kill_vid); + +/** + * wx_start_hw - Prepare hardware for Tx/Rx + * @wx: pointer to hardware structure + * + * Starts the hardware using the generic start_hw function + * and the generation start_hw function. + * Then performs revision-specific operations, if any. + **/ +void wx_start_hw(struct wx *wx) +{ + int i; + + /* Clear the VLAN filter table */ + wx_clear_vfta(wx); + WX_WRITE_FLUSH(wx); + /* Clear the rate limiters */ + for (i = 0; i < wx->mac.max_tx_queues; i++) { + wr32(wx, WX_TDM_RP_IDX, i); + wr32(wx, WX_TDM_RP_RATE, 0); + } +} +EXPORT_SYMBOL(wx_start_hw); + MODULE_LICENSE("GPL"); |