[dpdk-dev] [PATCH 01/12] net/ice/base: calculate logical PF ID

[Qi Zhang <qi.z.zhang@intel.com>]

In some devices, the function numbers used are non-contiguous. For
example, some two port devices will report as functions 0 and 2.

When distributing RSS and FDIR masks, which are global resources across
the active devices, it is required to have a contiguous PF id, which can
be described as a logical PF id. In the case above, function 0 would
have a logical PF id of 0, and function 2 would have a logical PF id of
1.

Cc: stable@dpdk.org

Using logical PF id can properly describe which slice of resources can
be used by a particular PF.

Signed-off-by: Dan Nowlin <dan.nowlin@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
---
 drivers/net/ice/base/ice_common.c    | 19 +++++++++++++++++++
 drivers/net/ice/base/ice_flex_pipe.c |  2 +-
 drivers/net/ice/base/ice_type.h      |  1 +
 3 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ice/base/ice_common.c b/drivers/net/ice/base/ice_common.c
index 641859f752..6004c95625 100644
--- a/drivers/net/ice/base/ice_common.c
+++ b/drivers/net/ice/base/ice_common.c
@@ -2535,6 +2535,23 @@ ice_parse_func_caps(struct ice_hw *hw, struct ice_hw_func_caps *func_p,
 	ice_recalc_port_limited_caps(hw, &func_p->common_cap);
 }
 
+/**
+ * ice_func_id_to_logical_id - map from function id to logical pf id
+ * @active_function_bitmap: active function bitmap
+ * @pf_id: function number of device
+ */
+static int ice_func_id_to_logical_id(u32 active_function_bitmap, u8 pf_id)
+{
+	u8 logical_id = 0;
+	u8 i;
+
+	for (i = 0; i < pf_id; i++)
+		if (active_function_bitmap & BIT(i))
+			logical_id++;
+
+	return logical_id;
+}
+
 /**
  * ice_parse_valid_functions_cap - Parse ICE_AQC_CAPS_VALID_FUNCTIONS caps
  * @hw: pointer to the HW struct
@@ -2552,6 +2569,8 @@ ice_parse_valid_functions_cap(struct ice_hw *hw, struct ice_hw_dev_caps *dev_p,
 	dev_p->num_funcs = ice_hweight32(number);
 	ice_debug(hw, ICE_DBG_INIT, "dev caps: num_funcs = %d\n",
 		  dev_p->num_funcs);
+
+	hw->logical_pf_id = ice_func_id_to_logical_id(number, hw->pf_id);
 }
 
 /**
diff --git a/drivers/net/ice/base/ice_flex_pipe.c b/drivers/net/ice/base/ice_flex_pipe.c
index fd98b3837d..8a6fc8a9a5 100644
--- a/drivers/net/ice/base/ice_flex_pipe.c
+++ b/drivers/net/ice/base/ice_flex_pipe.c
@@ -3432,7 +3432,7 @@ static void ice_init_prof_masks(struct ice_hw *hw, enum ice_block blk)
 	per_pf = ICE_PROF_MASK_COUNT / hw->dev_caps.num_funcs;
 
 	hw->blk[blk].masks.count = per_pf;
-	hw->blk[blk].masks.first = hw->pf_id * per_pf;
+	hw->blk[blk].masks.first = hw->logical_pf_id * per_pf;
 
 	ice_memset(hw->blk[blk].masks.masks, 0,
 		   sizeof(hw->blk[blk].masks.masks), ICE_NONDMA_MEM);
diff --git a/drivers/net/ice/base/ice_type.h b/drivers/net/ice/base/ice_type.h
index 56ee628f10..b1e03b10ff 100644
--- a/drivers/net/ice/base/ice_type.h
+++ b/drivers/net/ice/base/ice_type.h
@@ -1132,6 +1132,7 @@ struct ice_hw {
 	u8 revision_id;
 
 	u8 pf_id;		/* device profile info */
+	u8 logical_pf_id;
 
 	u16 max_burst_size;	/* driver sets this value */
 
-- 
2.26.2