diff mbox series

[iwl-next,v5,10/13] ice: add method to disable FDIR SWAP option

Message ID 20240725220810.12748-11-ahmed.zaki@intel.com (mailing list archive)
State Awaiting Upstream
Delegated to: Netdev Maintainers
Headers show
Series ice: iavf: add support for TC U32 filters on VFs | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Guessed tree name to be net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 42 this patch: 42
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers warning 3 maintainers not CCed: kuba@kernel.org edumazet@google.com pabeni@redhat.com
netdev/build_clang success Errors and warnings before: 43 this patch: 43
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 45 this patch: 45
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 107 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 116 this patch: 115
netdev/source_inline success Was 0 now: 0

Commit Message

Ahmed Zaki July 25, 2024, 10:08 p.m. UTC 
From: Junfeng Guo <junfeng.guo@intel.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@linux.intel.com>
Signed-off-by: Junfeng Guo <junfeng.guo@intel.com>
Signed-off-by: Ahmed Zaki <ahmed.zaki@intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
---
 .../net/ethernet/intel/ice/ice_flex_pipe.c    | 53 ++++++++++++++++++-
 .../net/ethernet/intel/ice/ice_flex_pipe.h    |  4 +-
 drivers/net/ethernet/intel/ice/ice_flow.c     |  2 +-
 3 files changed, 55 insertions(+), 4 deletions(-)

Comments

Simon Horman July 30, 2024, 10:23 a.m. UTC | #1 
On Thu, Jul 25, 2024 at 04:08:06PM -0600, Ahmed Zaki wrote:
> From: Junfeng Guo <junfeng.guo@intel.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@linux.intel.com>
> Signed-off-by: Junfeng Guo <junfeng.guo@intel.com>
> Signed-off-by: Ahmed Zaki <ahmed.zaki@intel.com>
> Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>

Reviewed-by: Simon Horman <horms@kernel.org>
diff mbox series

Patch

diff --git a/drivers/net/ethernet/intel/ice/ice_flex_pipe.c b/drivers/net/ethernet/intel/ice/ice_flex_pipe.c
index 20d5db88c99f..3b5d48903ca5 100644
--- a/drivers/net/ethernet/intel/ice/ice_flex_pipe.c
+++ b/drivers/net/ethernet/intel/ice/ice_flex_pipe.c
@@ -2981,6 +2981,52 @@  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, fvw_num;
+	unsigned int i;
+
+	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;
+		unsigned int 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 +3037,7 @@  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 +3047,7 @@  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 +3067,7 @@  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 +3078,8 @@  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;