diff options
author | Don Skidmore | 2014-11-18 10:35:08 +0100 |
---|---|---|
committer | Jeff Kirsher | 2014-12-05 18:13:06 +0100 |
commit | 0f9b232b176d5cf279fc945addf1e768571b35b3 (patch) | |
tree | c828050a46cd521ef0a9e51778c19abb807cbcf2 /drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | |
parent | ixgbe: remove CIAA/D register reads from bad VF check (diff) | |
download | kernel-qcow2-linux-0f9b232b176d5cf279fc945addf1e768571b35b3.tar.gz kernel-qcow2-linux-0f9b232b176d5cf279fc945addf1e768571b35b3.tar.xz kernel-qcow2-linux-0f9b232b176d5cf279fc945addf1e768571b35b3.zip |
ixgbe: add support for X550 extended RSS support
The new X550 family of MAC's will have a larger RSS hash (16 -> 64).
It will also support individual VF to have their own independent RSS
hash key. This patch will enable this functionality
Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbe/ixgbe_main.c')
-rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 82 |
1 files changed, 72 insertions, 10 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index b519b89110c5..eb550788e03a 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -3217,7 +3217,9 @@ static void ixgbe_setup_reta(struct ixgbe_adapter *adapter, const u32 *seed) struct ixgbe_hw *hw = &adapter->hw; u32 reta = 0; int i, j; + int reta_entries = 128; u16 rss_i = adapter->ring_feature[RING_F_RSS].indices; + int indices_multi; /* * Program table for at least 2 queues w/ SR-IOV so that VFs can @@ -3231,22 +3233,67 @@ static void ixgbe_setup_reta(struct ixgbe_adapter *adapter, const u32 *seed) for (i = 0; i < 10; i++) IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), seed[i]); + /* Fill out the redirection table as follows: + * 82598: 128 (8 bit wide) entries containing pair of 4 bit RSS indices + * 82599/X540: 128 (8 bit wide) entries containing 4 bit RSS index + * X550: 512 (8 bit wide) entries containing 6 bit RSS index + */ + if (adapter->hw.mac.type == ixgbe_mac_82598EB) + indices_multi = 0x11; + else + indices_multi = 0x1; + + switch (adapter->hw.mac.type) { + case ixgbe_mac_X550: + case ixgbe_mac_X550EM_x: + if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) + reta_entries = 512; + default: + break; + } + /* Fill out redirection table */ - for (i = 0, j = 0; i < 128; i++, j++) { + for (i = 0, j = 0; i < reta_entries; i++, j++) { + if (j == rss_i) + j = 0; + reta = (reta << 8) | (j * indices_multi); + if ((i & 3) == 3) { + if (i < 128) + IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta); + else + IXGBE_WRITE_REG(hw, IXGBE_ERETA((i >> 2) - 32), + reta); + } + } +} + +static void ixgbe_setup_vfreta(struct ixgbe_adapter *adapter, const u32 *seed) +{ + struct ixgbe_hw *hw = &adapter->hw; + u32 vfreta = 0; + u16 rss_i = adapter->ring_feature[RING_F_RSS].indices; + unsigned int pf_pool = adapter->num_vfs; + int i, j; + + /* Fill out hash function seeds */ + for (i = 0; i < 10; i++) + IXGBE_WRITE_REG(hw, IXGBE_PFVFRSSRK(i, pf_pool), seed[i]); + + /* Fill out the redirection table */ + for (i = 0, j = 0; i < 64; i++, j++) { if (j == rss_i) j = 0; - /* reta = 4-byte sliding window of - * 0x00..(indices-1)(indices-1)00..etc. */ - reta = (reta << 8) | (j * 0x11); + vfreta = (vfreta << 8) | j; if ((i & 3) == 3) - IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta); + IXGBE_WRITE_REG(hw, IXGBE_PFVFRETA(i >> 2, pf_pool), + vfreta); } } static void ixgbe_setup_mrqc(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; - u32 mrqc = 0, rss_field = 0; + u32 mrqc = 0, rss_field = 0, vfmrqc = 0; u32 rss_key[10]; u32 rxcsum; @@ -3292,9 +3339,24 @@ static void ixgbe_setup_mrqc(struct ixgbe_adapter *adapter) rss_field |= IXGBE_MRQC_RSS_FIELD_IPV6_UDP; netdev_rss_key_fill(rss_key, sizeof(rss_key)); - ixgbe_setup_reta(adapter, rss_key); - mrqc |= rss_field; - IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); + if ((hw->mac.type >= ixgbe_mac_X550) && + (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) { + unsigned int pf_pool = adapter->num_vfs; + + /* Enable VF RSS mode */ + mrqc |= IXGBE_MRQC_MULTIPLE_RSS; + IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); + + /* Setup RSS through the VF registers */ + ixgbe_setup_vfreta(adapter, rss_key); + vfmrqc = IXGBE_MRQC_RSSEN; + vfmrqc |= rss_field; + IXGBE_WRITE_REG(hw, IXGBE_PFVFMRQC(pf_pool), vfmrqc); + } else { + ixgbe_setup_reta(adapter, rss_key); + mrqc |= rss_field; + IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); + } } /** @@ -5056,7 +5118,7 @@ static int ixgbe_sw_init(struct ixgbe_adapter *adapter) hw->subsystem_device_id = pdev->subsystem_device; /* Set common capability flags and settings */ - rss = min_t(int, IXGBE_MAX_RSS_INDICES, num_online_cpus()); + rss = min_t(int, ixgbe_max_rss_indices(adapter), num_online_cpus()); adapter->ring_feature[RING_F_RSS].limit = rss; adapter->flags2 |= IXGBE_FLAG2_RSC_CAPABLE; adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED; |