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Message-ID: <20240710204015.124233-11-ahmed.zaki@intel.com>
Date: Wed, 10 Jul 2024 14:40:12 -0600
From: Ahmed Zaki <ahmed.zaki@...el.com>
To: intel-wired-lan@...ts.osuosl.org
Cc: netdev@...r.kernel.org,
anthony.l.nguyen@...el.com,
horms@...nel.org,
Junfeng Guo <junfeng.guo@...el.com>,
Marcin Szycik <marcin.szycik@...ux.intel.com>,
Ahmed Zaki <ahmed.zaki@...el.com>
Subject: [PATCH iwl-next v3 10/13] ice: add method to disable FDIR SWAP option
From: Junfeng Guo <junfeng.guo@...el.com>
The SWAP Flag in the FDIR Programming Descriptor doesn't work properly,
it is always set and cannot be unset (hardware bug). Thus, add a method
to effectively disable the FDIR SWAP option by setting the FDSWAP instead
of FDINSET registers.
Reviewed-by: Marcin Szycik <marcin.szycik@...ux.intel.com>
Signed-off-by: Junfeng Guo <junfeng.guo@...el.com>
Signed-off-by: Ahmed Zaki <ahmed.zaki@...el.com>
---
.../net/ethernet/intel/ice/ice_flex_pipe.c | 52 ++++++++++++++++++-
.../net/ethernet/intel/ice/ice_flex_pipe.h | 4 +-
drivers/net/ethernet/intel/ice/ice_flow.c | 2 +-
3 files changed, 54 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_flex_pipe.c b/drivers/net/ethernet/intel/ice/ice_flex_pipe.c
index 20d5db88c99f..a750d7e1edd8 100644
--- a/drivers/net/ethernet/intel/ice/ice_flex_pipe.c
+++ b/drivers/net/ethernet/intel/ice/ice_flex_pipe.c
@@ -2981,6 +2981,51 @@ ice_add_prof_attrib(struct ice_prof_map *prof, u8 ptg, u16 ptype,
}
/**
+ * ice_disable_fd_swap - set register appropriately to disable FD swap
+ * @hw: pointer to the HW struct
+ * @prof_id: profile ID
+ *
+ * Return: Void.
+ */
+static void
+ice_disable_fd_swap(struct ice_hw *hw, u8 prof_id)
+{
+ u16 swap_val, i, fvw_num;
+
+ swap_val = ICE_SWAP_VALID;
+ fvw_num = hw->blk[ICE_BLK_FD].es.fvw / ICE_FDIR_REG_SET_SIZE;
+
+ /* Since the SWAP Flag in the Programming Desc doesn't work,
+ * here add method to disable the SWAP Option via setting
+ * certain SWAP and INSET register sets.
+ */
+ for (i = 0; i < fvw_num ; i++) {
+ u32 raw_swap, raw_in;
+ u8 j;
+
+ raw_swap = 0;
+ raw_in = 0;
+
+ for (j = 0; j < ICE_FDIR_REG_SET_SIZE; j++) {
+ raw_swap |= (swap_val++) << (j * BITS_PER_BYTE);
+ raw_in |= ICE_INSET_DFLT << (j * BITS_PER_BYTE);
+ }
+
+ /* write the FDIR swap register set */
+ wr32(hw, GLQF_FDSWAP(prof_id, i), raw_swap);
+
+ ice_debug(hw, ICE_DBG_INIT, "swap wr(%d, %d): 0x%x = 0x%08x\n",
+ prof_id, i, GLQF_FDSWAP(prof_id, i), raw_swap);
+
+ /* write the FDIR inset register set */
+ wr32(hw, GLQF_FDINSET(prof_id, i), raw_in);
+
+ ice_debug(hw, ICE_DBG_INIT, "inset wr(%d, %d): 0x%x = 0x%08x\n",
+ prof_id, i, GLQF_FDINSET(prof_id, i), raw_in);
+ }
+}
+
+/*
* ice_add_prof - add profile
* @hw: pointer to the HW struct
* @blk: hardware block
@@ -2991,6 +3036,7 @@ ice_add_prof_attrib(struct ice_prof_map *prof, u8 ptg, u16 ptype,
* @es: extraction sequence (length of array is determined by the block)
* @masks: mask for extraction sequence
* @symm: symmetric setting for RSS profiles
+ * @fd_swap: enable/disable FDIR paired src/dst fields swap option
*
* This function registers a profile, which matches a set of PTYPES with a
* particular extraction sequence. While the hardware profile is allocated
@@ -3000,7 +3046,7 @@ ice_add_prof_attrib(struct ice_prof_map *prof, u8 ptg, u16 ptype,
int
ice_add_prof(struct ice_hw *hw, enum ice_block blk, u64 id, u8 ptypes[],
const struct ice_ptype_attributes *attr, u16 attr_cnt,
- struct ice_fv_word *es, u16 *masks, bool symm)
+ struct ice_fv_word *es, u16 *masks, bool symm, bool fd_swap)
{
u32 bytes = DIV_ROUND_UP(ICE_FLOW_PTYPE_MAX, BITS_PER_BYTE);
DECLARE_BITMAP(ptgs_used, ICE_XLT1_CNT);
@@ -3020,7 +3066,7 @@ ice_add_prof(struct ice_hw *hw, enum ice_block blk, u64 id, u8 ptypes[],
status = ice_alloc_prof_id(hw, blk, &prof_id);
if (status)
goto err_ice_add_prof;
- if (blk == ICE_BLK_FD) {
+ if (blk == ICE_BLK_FD && fd_swap) {
/* For Flow Director block, the extraction sequence may
* need to be altered in the case where there are paired
* fields that have no match. This is necessary because
@@ -3031,6 +3077,8 @@ ice_add_prof(struct ice_hw *hw, enum ice_block blk, u64 id, u8 ptypes[],
status = ice_update_fd_swap(hw, prof_id, es);
if (status)
goto err_ice_add_prof;
+ } else if (blk == ICE_BLK_FD) {
+ ice_disable_fd_swap(hw, prof_id);
}
status = ice_update_prof_masking(hw, blk, prof_id, masks);
if (status)
diff --git a/drivers/net/ethernet/intel/ice/ice_flex_pipe.h b/drivers/net/ethernet/intel/ice/ice_flex_pipe.h
index b39d7cdc381f..7c66652dadd6 100644
--- a/drivers/net/ethernet/intel/ice/ice_flex_pipe.h
+++ b/drivers/net/ethernet/intel/ice/ice_flex_pipe.h
@@ -6,6 +6,8 @@
#include "ice_type.h"
+#define ICE_FDIR_REG_SET_SIZE 4
+
int
ice_acquire_change_lock(struct ice_hw *hw, enum ice_aq_res_access_type access);
void ice_release_change_lock(struct ice_hw *hw);
@@ -42,7 +44,7 @@ bool ice_hw_ptype_ena(struct ice_hw *hw, u16 ptype);
int
ice_add_prof(struct ice_hw *hw, enum ice_block blk, u64 id, u8 ptypes[],
const struct ice_ptype_attributes *attr, u16 attr_cnt,
- struct ice_fv_word *es, u16 *masks, bool symm);
+ struct ice_fv_word *es, u16 *masks, bool symm, bool fd_swap);
struct ice_prof_map *
ice_search_prof_id(struct ice_hw *hw, enum ice_block blk, u64 id);
int
diff --git a/drivers/net/ethernet/intel/ice/ice_flow.c b/drivers/net/ethernet/intel/ice/ice_flow.c
index fc2b58f56279..79106503194b 100644
--- a/drivers/net/ethernet/intel/ice/ice_flow.c
+++ b/drivers/net/ethernet/intel/ice/ice_flow.c
@@ -1400,7 +1400,7 @@ ice_flow_add_prof_sync(struct ice_hw *hw, enum ice_block blk,
/* Add a HW profile for this flow profile */
status = ice_add_prof(hw, blk, prof_id, (u8 *)params->ptypes,
params->attr, params->attr_cnt, params->es,
- params->mask, symm);
+ params->mask, symm, true);
if (status) {
ice_debug(hw, ICE_DBG_FLOW, "Error adding a HW flow profile\n");
goto out;
--
2.43.0
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