[PATCH net-next v3 00/12] Add EMAC3 support for sa8540p-ride

[PATCH net-next v3 00/12] Add EMAC3 support for sa8540p-ride

[Andrew Halaney]

This is a forward port / upstream refactor of code delivered
downstream by Qualcomm over at [0] to enable the DWMAC5 based
implementation called EMAC3 on the sa8540p-ride dev board.

From what I can tell with the board schematic in hand,
as well as the code delivered, the main changes needed are:

    1. A new address space layout for /dwmac5/EMAC3 MTL/DMA regs
    2. A new programming sequence required for the EMAC3 base platforms

This series makes the change for 1 above as well as other housekeeping items
such as converting dt-bindings to yaml, etc.

As requested[1], it has been split up by compile time / maintainer tree.
I will post a link to the associated devicetree changes that together
with this series get the hardware functioning.

[0] https://git.codelinaro.org/clo/la/kernel/ark-5.14/-/commit/510235ad02d7f0df478146fb00d7a4ba74821b17
[1] https://lore.kernel.org/netdev/20230320202802.4e7dc54c@kernel.org/

v2: https://lore.kernel.org/netdev/20230320221617.236323-1-ahalaney@redhat.com/
v1: https://lore.kernel.org/netdev/20230313165620.128463-1-ahalaney@redhat.com/

Thanks,
Andrew

Andrew Halaney (9):
  dt-bindings: net: qcom,ethqos: Add Qualcomm sc8280xp compatibles
  net: stmmac: Remove unnecessary if statement brackets
  net: stmmac: Fix DMA typo
  net: stmmac: Remove some unnecessary void pointers
  net: stmmac: Pass stmmac_priv in some callbacks
  net: stmmac: dwmac4: Allow platforms to specify some DMA/MTL offsets
  net: stmmac: dwmac-qcom-ethqos: Respect phy-mode and TX delay
  net: stmmac: dwmac-qcom-ethqos: Use loopback_en for all speeds
  net: stmmac: dwmac-qcom-ethqos: Add EMAC3 support

Bhupesh Sharma (3):
  dt-bindings: net: snps,dwmac: Update interrupt-names
  dt-bindings: net: snps,dwmac: Add Qualcomm Ethernet ETHQOS compatibles
  dt-bindings: net: qcom,ethqos: Convert bindings to yaml

 .../devicetree/bindings/net/qcom,ethqos.txt   |  66 ------
 .../devicetree/bindings/net/qcom,ethqos.yaml  | 111 ++++++++++
 .../devicetree/bindings/net/snps,dwmac.yaml   |   9 +-
 MAINTAINERS                                   |   2 +-
 .../net/ethernet/stmicro/stmmac/chain_mode.c  |  10 +-
 drivers/net/ethernet/stmicro/stmmac/common.h  |   2 +-
 .../stmicro/stmmac/dwmac-qcom-ethqos.c        | 177 +++++++++++----
 .../net/ethernet/stmicro/stmmac/dwmac-sun8i.c |  36 ++--
 .../ethernet/stmicro/stmmac/dwmac1000_core.c  |   3 +-
 .../ethernet/stmicro/stmmac/dwmac1000_dma.c   |  19 +-
 .../ethernet/stmicro/stmmac/dwmac100_dma.c    |  14 +-
 drivers/net/ethernet/stmicro/stmmac/dwmac4.h  |  91 ++++++--
 .../net/ethernet/stmicro/stmmac/dwmac4_core.c |  50 +++--
 .../ethernet/stmicro/stmmac/dwmac4_descs.c    |   8 +-
 .../net/ethernet/stmicro/stmmac/dwmac4_dma.c  | 201 +++++++++++-------
 .../net/ethernet/stmicro/stmmac/dwmac4_dma.h  |  89 +++++---
 .../net/ethernet/stmicro/stmmac/dwmac4_lib.c  | 105 +++++----
 .../net/ethernet/stmicro/stmmac/dwmac_dma.h   |  22 +-
 .../net/ethernet/stmicro/stmmac/dwmac_lib.c   |  18 +-
 .../ethernet/stmicro/stmmac/dwxgmac2_core.c   |   9 +-
 .../ethernet/stmicro/stmmac/dwxgmac2_descs.c  |   6 +-
 .../ethernet/stmicro/stmmac/dwxgmac2_dma.c    |  71 ++++---
 .../net/ethernet/stmicro/stmmac/enh_desc.c    |  11 +-
 drivers/net/ethernet/stmicro/stmmac/hwif.h    | 176 ++++++++-------
 .../net/ethernet/stmicro/stmmac/norm_desc.c   |   8 +-
 .../net/ethernet/stmicro/stmmac/ring_mode.c   |  10 +-
 .../net/ethernet/stmicro/stmmac/stmmac_mdio.c |   3 +-
 include/linux/stmmac.h                        |  19 ++
 28 files changed, 871 insertions(+), 475 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/net/qcom,ethqos.txt
 create mode 100644 Documentation/devicetree/bindings/net/qcom,ethqos.yaml

-- 
2.39.2

[PATCH net-next v3 01/12] dt-bindings: net: snps,dwmac: Update interrupt-names

[Andrew Halaney]

From: Bhupesh Sharma <bhupesh.sharma@linaro.org>

As commit fc191af1bb0d ("net: stmmac: platform: Fix misleading
interrupt error msg") noted, not every stmmac based platform
makes use of the 'eth_wake_irq' or 'eth_lpi' interrupts.

So, update the 'interrupt-names' inside 'snps,dwmac' YAML
bindings to reflect the same.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
---

Changes since v2:
    * Add Krzysztof's Reviewed-by tag

Changes since v1:
    * Dropped Krzysztof's Acked-by since changes requested
    * Changed interrupt-names items per Krzysztof

 Documentation/devicetree/bindings/net/snps,dwmac.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
index 74f2ddc12018..5a4737e969a3 100644
--- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
@@ -105,7 +105,7 @@ properties:
     minItems: 1
     items:
       - const: macirq
-      - const: eth_wake_irq
+      - enum: [eth_wake_irq, eth_lpi]
       - const: eth_lpi
 
   clocks:
-- 
2.39.2

[PATCH net-next v3 02/12] dt-bindings: net: snps,dwmac: Add Qualcomm Ethernet ETHQOS compatibles

[Andrew Halaney]

From: Bhupesh Sharma <bhupesh.sharma@linaro.org>

Add Qualcomm Ethernet ETHQOS compatible checks
in snps,dwmac YAML binding document.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
---

Changes since v1 and v2:
    * None

 Documentation/devicetree/bindings/net/snps,dwmac.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
index 5a4737e969a3..1e7982704114 100644
--- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
@@ -65,6 +65,8 @@ properties:
         - ingenic,x2000-mac
         - loongson,ls2k-dwmac
         - loongson,ls7a-dwmac
+        - qcom,qcs404-ethqos
+        - qcom,sm8150-ethqos
         - renesas,r9a06g032-gmac
         - renesas,rzn1-gmac
         - rockchip,px30-gmac
@@ -625,6 +627,8 @@ allOf:
               - ingenic,x1600-mac
               - ingenic,x1830-mac
               - ingenic,x2000-mac
+              - qcom,qcs404-ethqos
+              - qcom,sm8150-ethqos
               - snps,dwmac-4.00
               - snps,dwmac-4.10a
               - snps,dwmac-4.20a
-- 
2.39.2

[PATCH net-next v3 03/12] dt-bindings: net: qcom,ethqos: Convert bindings to yaml

[Andrew Halaney]

From: Bhupesh Sharma <bhupesh.sharma@linaro.org>

Convert Qualcomm ETHQOS Ethernet devicetree binding to YAML.
In doing so add a new property for iommus since newer platforms support
using one, and without such make dtbs_check fails on them.

While at it, also update the MAINTAINERS file to point to the yaml
version of the bindings.

Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
[halaney: Remove duplicated properties, add MAINTAINERS and iommus]
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
---

Changes since v2:
    * Add Krzysztof's Reviewed-by tag

Changes since v1:
    * Drop redundant wording in binding description (Krzysztof)
    * Document iommus addition explicitly in commit message (Krzysztof)

 .../devicetree/bindings/net/qcom,ethqos.txt   |  66 -----------
 .../devicetree/bindings/net/qcom,ethqos.yaml  | 110 ++++++++++++++++++
 MAINTAINERS                                   |   2 +-
 3 files changed, 111 insertions(+), 67 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/net/qcom,ethqos.txt
 create mode 100644 Documentation/devicetree/bindings/net/qcom,ethqos.yaml

diff --git a/Documentation/devicetree/bindings/net/qcom,ethqos.txt b/Documentation/devicetree/bindings/net/qcom,ethqos.txt
deleted file mode 100644
index 1f5746849a71..000000000000
--- a/Documentation/devicetree/bindings/net/qcom,ethqos.txt
+++ /dev/null
@@ -1,66 +0,0 @@
-Qualcomm Ethernet ETHQOS device
-
-This documents dwmmac based ethernet device which supports Gigabit
-ethernet for version v2.3.0 onwards.
-
-This device has following properties:
-
-Required properties:
-
-- compatible: Should be one of:
-		"qcom,qcs404-ethqos"
-		"qcom,sm8150-ethqos"
-
-- reg: Address and length of the register set for the device
-
-- reg-names: Should contain register names "stmmaceth", "rgmii"
-
-- clocks: Should contain phandle to clocks
-
-- clock-names: Should contain clock names "stmmaceth", "pclk",
-		"ptp_ref", "rgmii"
-
-- interrupts: Should contain phandle to interrupts
-
-- interrupt-names: Should contain interrupt names "macirq", "eth_lpi"
-
-Rest of the properties are defined in stmmac.txt file in same directory
-
-
-Example:
-
-ethernet: ethernet@7a80000 {
-	compatible = "qcom,qcs404-ethqos";
-	reg = <0x07a80000 0x10000>,
-		<0x07a96000 0x100>;
-	reg-names = "stmmaceth", "rgmii";
-	clock-names = "stmmaceth", "pclk", "ptp_ref", "rgmii";
-	clocks = <&gcc GCC_ETH_AXI_CLK>,
-		<&gcc GCC_ETH_SLAVE_AHB_CLK>,
-		<&gcc GCC_ETH_PTP_CLK>,
-		<&gcc GCC_ETH_RGMII_CLK>;
-	interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>,
-			<GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>;
-	interrupt-names = "macirq", "eth_lpi";
-	snps,reset-gpio = <&tlmm 60 GPIO_ACTIVE_LOW>;
-	snps,reset-active-low;
-
-	snps,txpbl = <8>;
-	snps,rxpbl = <2>;
-	snps,aal;
-	snps,tso;
-
-	phy-handle = <&phy1>;
-	phy-mode = "rgmii";
-
-	mdio {
-		#address-cells = <0x1>;
-		#size-cells = <0x0>;
-		compatible = "snps,dwmac-mdio";
-		phy1: phy@4 {
-			device_type = "ethernet-phy";
-			reg = <0x4>;
-		};
-	};
-
-};
diff --git a/Documentation/devicetree/bindings/net/qcom,ethqos.yaml b/Documentation/devicetree/bindings/net/qcom,ethqos.yaml
new file mode 100644
index 000000000000..88234a2010b1
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/qcom,ethqos.yaml
@@ -0,0 +1,110 @@
+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/qcom,ethqos.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Ethernet ETHQOS device
+
+maintainers:
+  - Bhupesh Sharma <bhupesh.sharma@linaro.org>
+
+description:
+  dwmmac based Qualcomm ethernet devices which support Gigabit
+  ethernet (version v2.3.0 and onwards).
+
+allOf:
+  - $ref: snps,dwmac.yaml#
+
+properties:
+  compatible:
+    enum:
+      - qcom,qcs404-ethqos
+      - qcom,sm8150-ethqos
+
+  reg:
+    maxItems: 2
+
+  reg-names:
+    items:
+      - const: stmmaceth
+      - const: rgmii
+
+  interrupts:
+    items:
+      - description: Combined signal for various interrupt events
+      - description: The interrupt that occurs when Rx exits the LPI state
+
+  interrupt-names:
+    items:
+      - const: macirq
+      - const: eth_lpi
+
+  clocks:
+    maxItems: 4
+
+  clock-names:
+    items:
+      - const: stmmaceth
+      - const: pclk
+      - const: ptp_ref
+      - const: rgmii
+
+  iommus:
+    maxItems: 1
+
+required:
+  - compatible
+  - clocks
+  - clock-names
+  - reg-names
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/qcom,gcc-qcs404.h>
+    #include <dt-bindings/gpio/gpio.h>
+
+    ethernet: ethernet@7a80000 {
+      compatible = "qcom,qcs404-ethqos";
+      reg = <0x07a80000 0x10000>,
+            <0x07a96000 0x100>;
+      reg-names = "stmmaceth", "rgmii";
+      clock-names = "stmmaceth", "pclk", "ptp_ref", "rgmii";
+      clocks = <&gcc GCC_ETH_AXI_CLK>,
+               <&gcc GCC_ETH_SLAVE_AHB_CLK>,
+               <&gcc GCC_ETH_PTP_CLK>,
+               <&gcc GCC_ETH_RGMII_CLK>;
+      interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>;
+      interrupt-names = "macirq", "eth_lpi";
+
+      rx-fifo-depth = <4096>;
+      tx-fifo-depth = <4096>;
+
+      snps,tso;
+      snps,reset-gpio = <&tlmm 60 GPIO_ACTIVE_LOW>;
+      snps,reset-active-low;
+      snps,reset-delays-us = <0 10000 10000>;
+
+      pinctrl-names = "default";
+      pinctrl-0 = <&ethernet_defaults>;
+
+      phy-handle = <&phy1>;
+      phy-mode = "rgmii";
+      mdio {
+        #address-cells = <0x1>;
+        #size-cells = <0x0>;
+
+        compatible = "snps,dwmac-mdio";
+        phy1: phy@4 {
+          compatible = "ethernet-phy-ieee802.3-c22";
+          device_type = "ethernet-phy";
+          reg = <0x4>;
+
+          #phy-cells = <0>;
+        };
+      };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index dffcc253563b..d1cb4fa8b704 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -17294,7 +17294,7 @@ M:	Vinod Koul <vkoul@kernel.org>
 R:	Bhupesh Sharma <bhupesh.sharma@linaro.org>
 L:	netdev@vger.kernel.org
 S:	Maintained
-F:	Documentation/devicetree/bindings/net/qcom,ethqos.txt
+F:	Documentation/devicetree/bindings/net/qcom,ethqos.yaml
 F:	drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
 
 QUALCOMM FASTRPC DRIVER
-- 
2.39.2

[PATCH net-next v3 04/12] dt-bindings: net: qcom,ethqos: Add Qualcomm sc8280xp compatibles

[Andrew Halaney]

The sc8280xp has a new version of the ETHQOS hardware in it, EMAC v3.
Add a compatible for this.

Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
---

Changes since v2:
    * *Really* alphabetical sorting (sorry Krzysztof!)

Changes since v1:
    * Alphabetical sorting (Krzysztof)
 Documentation/devicetree/bindings/net/qcom,ethqos.yaml | 1 +
 Documentation/devicetree/bindings/net/snps,dwmac.yaml  | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/qcom,ethqos.yaml b/Documentation/devicetree/bindings/net/qcom,ethqos.yaml
index 88234a2010b1..60a38044fb19 100644
--- a/Documentation/devicetree/bindings/net/qcom,ethqos.yaml
+++ b/Documentation/devicetree/bindings/net/qcom,ethqos.yaml
@@ -20,6 +20,7 @@ properties:
   compatible:
     enum:
       - qcom,qcs404-ethqos
+      - qcom,sc8280xp-ethqos
       - qcom,sm8150-ethqos
 
   reg:
diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
index 1e7982704114..da311c1f2c88 100644
--- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
@@ -66,6 +66,7 @@ properties:
         - loongson,ls2k-dwmac
         - loongson,ls7a-dwmac
         - qcom,qcs404-ethqos
+        - qcom,sc8280xp-ethqos
         - qcom,sm8150-ethqos
         - renesas,r9a06g032-gmac
         - renesas,rzn1-gmac
@@ -574,6 +575,7 @@ allOf:
               - ingenic,x1600-mac
               - ingenic,x1830-mac
               - ingenic,x2000-mac
+              - qcom,sc8280xp-ethqos
               - snps,dwmac-3.50a
               - snps,dwmac-4.10a
               - snps,dwmac-4.20a
@@ -628,6 +630,7 @@ allOf:
               - ingenic,x1830-mac
               - ingenic,x2000-mac
               - qcom,qcs404-ethqos
+              - qcom,sc8280xp-ethqos
               - qcom,sm8150-ethqos
               - snps,dwmac-4.00
               - snps,dwmac-4.10a
-- 
2.39.2

[PATCH net-next v3 05/12] net: stmmac: Remove unnecessary if statement brackets

[Andrew Halaney]

The brackets are unnecessary, remove them to match the coding style
used in the kernel.

Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
---

Changes since v2:
    * None

Changes since v1:
    * This patch is split from the next patch since it is a logically
      different change (Andrew Lunn)

 drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
index 21aaa2730ac8..6807c4c1a0a2 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
@@ -281,9 +281,8 @@ static int stmmac_mdio_read_c22(struct mii_bus *bus, int phyaddr, int phyreg)
 	value |= (phyreg << priv->hw->mii.reg_shift) & priv->hw->mii.reg_mask;
 	value |= (priv->clk_csr << priv->hw->mii.clk_csr_shift)
 		& priv->hw->mii.clk_csr_mask;
-	if (priv->plat->has_gmac4) {
+	if (priv->plat->has_gmac4)
 		value |= MII_GMAC4_READ;
-	}
 
 	data = stmmac_mdio_read(priv, data, value);
 
-- 
2.39.2

[PATCH net-next v3 06/12] net: stmmac: Fix DMA typo

[Andrew Halaney]

DAM is supposed to be DMA. Fix it to improve readability.

Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
---

Changes since v2:
    * New patch, stumbled into this typo when refactoring

 drivers/net/ethernet/stmicro/stmmac/common.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
index 54bb072aeb2d..4ad692c4116c 100644
--- a/drivers/net/ethernet/stmicro/stmmac/common.h
+++ b/drivers/net/ethernet/stmicro/stmmac/common.h
@@ -242,7 +242,7 @@ struct stmmac_safety_stats {
 
 #define SF_DMA_MODE 1		/* DMA STORE-AND-FORWARD Operation Mode */
 
-/* DAM HW feature register fields */
+/* DMA HW feature register fields */
 #define DMA_HW_FEAT_MIISEL	0x00000001	/* 10/100 Mbps Support */
 #define DMA_HW_FEAT_GMIISEL	0x00000002	/* 1000 Mbps Support */
 #define DMA_HW_FEAT_HDSEL	0x00000004	/* Half-Duplex Support */
-- 
2.39.2

[PATCH net-next v3 07/12] net: stmmac: Remove some unnecessary void pointers

[Andrew Halaney]

There's a few spots in the hardware interface where a void pointer is
used, but what's passed in and later cast out is always the same type.

Just use the proper type directly.

Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
---

Changes since v2:
    * New patch. In later patches refactoring hwif.h I touched these in
      their first form (which was later dropped) and changed this as
      part of that. But I thought the change was still good overall,
      so I left this improvement in the series.

 .../net/ethernet/stmicro/stmmac/chain_mode.c  | 10 +++----
 .../ethernet/stmicro/stmmac/dwmac100_dma.c    |  4 +--
 .../ethernet/stmicro/stmmac/dwmac4_descs.c    |  8 ++---
 .../ethernet/stmicro/stmmac/dwxgmac2_descs.c  |  6 ++--
 .../net/ethernet/stmicro/stmmac/enh_desc.c    | 11 +++----
 drivers/net/ethernet/stmicro/stmmac/hwif.h    | 30 ++++++++++++-------
 .../net/ethernet/stmicro/stmmac/norm_desc.c   |  8 ++---
 .../net/ethernet/stmicro/stmmac/ring_mode.c   | 10 +++----
 8 files changed, 47 insertions(+), 40 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/chain_mode.c b/drivers/net/ethernet/stmicro/stmmac/chain_mode.c
index 2e8744ac6b91..fb55efd52240 100644
--- a/drivers/net/ethernet/stmicro/stmmac/chain_mode.c
+++ b/drivers/net/ethernet/stmicro/stmmac/chain_mode.c
@@ -14,9 +14,9 @@
 
 #include "stmmac.h"
 
-static int jumbo_frm(void *p, struct sk_buff *skb, int csum)
+static int jumbo_frm(struct stmmac_tx_queue *tx_q, struct sk_buff *skb,
+		     int csum)
 {
-	struct stmmac_tx_queue *tx_q = (struct stmmac_tx_queue *)p;
 	unsigned int nopaged_len = skb_headlen(skb);
 	struct stmmac_priv *priv = tx_q->priv_data;
 	unsigned int entry = tx_q->cur_tx;
@@ -125,9 +125,8 @@ static void init_dma_chain(void *des, dma_addr_t phy_addr,
 	}
 }
 
-static void refill_desc3(void *priv_ptr, struct dma_desc *p)
+static void refill_desc3(struct stmmac_rx_queue *rx_q, struct dma_desc *p)
 {
-	struct stmmac_rx_queue *rx_q = (struct stmmac_rx_queue *)priv_ptr;
 	struct stmmac_priv *priv = rx_q->priv_data;
 
 	if (priv->hwts_rx_en && !priv->extend_desc)
@@ -141,9 +140,8 @@ static void refill_desc3(void *priv_ptr, struct dma_desc *p)
 				      sizeof(struct dma_desc)));
 }
 
-static void clean_desc3(void *priv_ptr, struct dma_desc *p)
+static void clean_desc3(struct stmmac_tx_queue *tx_q, struct dma_desc *p)
 {
-	struct stmmac_tx_queue *tx_q = (struct stmmac_tx_queue *)priv_ptr;
 	struct stmmac_priv *priv = tx_q->priv_data;
 	unsigned int entry = tx_q->dirty_tx;
 
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
index 8f0d9bc7cab5..f6abc7bfd29d 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
@@ -80,10 +80,10 @@ static void dwmac100_dump_dma_regs(void __iomem *ioaddr, u32 *reg_space)
 }
 
 /* DMA controller has two counters to track the number of the missed frames. */
-static void dwmac100_dma_diagnostic_fr(void *data, struct stmmac_extra_stats *x,
+static void dwmac100_dma_diagnostic_fr(struct net_device_stats *stats,
+				       struct stmmac_extra_stats *x,
 				       void __iomem *ioaddr)
 {
-	struct net_device_stats *stats = (struct net_device_stats *)data;
 	u32 csr8 = readl(ioaddr + DMA_MISSED_FRAME_CTR);
 
 	if (unlikely(csr8)) {
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c
index 8cc80b1db4cb..6a011d8633e8 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c
@@ -13,11 +13,11 @@
 #include "dwmac4.h"
 #include "dwmac4_descs.h"
 
-static int dwmac4_wrback_get_tx_status(void *data, struct stmmac_extra_stats *x,
+static int dwmac4_wrback_get_tx_status(struct net_device_stats *stats,
+				       struct stmmac_extra_stats *x,
 				       struct dma_desc *p,
 				       void __iomem *ioaddr)
 {
-	struct net_device_stats *stats = (struct net_device_stats *)data;
 	unsigned int tdes3;
 	int ret = tx_done;
 
@@ -73,10 +73,10 @@ static int dwmac4_wrback_get_tx_status(void *data, struct stmmac_extra_stats *x,
 	return ret;
 }
 
-static int dwmac4_wrback_get_rx_status(void *data, struct stmmac_extra_stats *x,
+static int dwmac4_wrback_get_rx_status(struct net_device_stats *stats,
+				       struct stmmac_extra_stats *x,
 				       struct dma_desc *p)
 {
-	struct net_device_stats *stats = (struct net_device_stats *)data;
 	unsigned int rdes1 = le32_to_cpu(p->des1);
 	unsigned int rdes2 = le32_to_cpu(p->des2);
 	unsigned int rdes3 = le32_to_cpu(p->des3);
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
index b1f0c3984a09..13c347ee8be9 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
@@ -8,7 +8,8 @@
 #include "common.h"
 #include "dwxgmac2.h"
 
-static int dwxgmac2_get_tx_status(void *data, struct stmmac_extra_stats *x,
+static int dwxgmac2_get_tx_status(struct net_device_stats *stats,
+				  struct stmmac_extra_stats *x,
 				  struct dma_desc *p, void __iomem *ioaddr)
 {
 	unsigned int tdes3 = le32_to_cpu(p->des3);
@@ -22,7 +23,8 @@ static int dwxgmac2_get_tx_status(void *data, struct stmmac_extra_stats *x,
 	return ret;
 }
 
-static int dwxgmac2_get_rx_status(void *data, struct stmmac_extra_stats *x,
+static int dwxgmac2_get_rx_status(struct net_device_stats *stats,
+				  struct stmmac_extra_stats *x,
 				  struct dma_desc *p)
 {
 	unsigned int rdes3 = le32_to_cpu(p->des3);
diff --git a/drivers/net/ethernet/stmicro/stmmac/enh_desc.c b/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
index 1bcbbd724fb5..a91d8f13a931 100644
--- a/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
@@ -12,10 +12,10 @@
 #include "common.h"
 #include "descs_com.h"
 
-static int enh_desc_get_tx_status(void *data, struct stmmac_extra_stats *x,
+static int enh_desc_get_tx_status(struct net_device_stats *stats,
+				  struct stmmac_extra_stats *x,
 				  struct dma_desc *p, void __iomem *ioaddr)
 {
-	struct net_device_stats *stats = (struct net_device_stats *)data;
 	unsigned int tdes0 = le32_to_cpu(p->des0);
 	int ret = tx_done;
 
@@ -117,7 +117,8 @@ static int enh_desc_coe_rdes0(int ipc_err, int type, int payload_err)
 	return ret;
 }
 
-static void enh_desc_get_ext_status(void *data, struct stmmac_extra_stats *x,
+static void enh_desc_get_ext_status(struct net_device_stats *stats,
+				    struct stmmac_extra_stats *x,
 				    struct dma_extended_desc *p)
 {
 	unsigned int rdes0 = le32_to_cpu(p->basic.des0);
@@ -181,10 +182,10 @@ static void enh_desc_get_ext_status(void *data, struct stmmac_extra_stats *x,
 	}
 }
 
-static int enh_desc_get_rx_status(void *data, struct stmmac_extra_stats *x,
+static int enh_desc_get_rx_status(struct net_device_stats *stats,
+				  struct stmmac_extra_stats *x,
 				  struct dma_desc *p)
 {
-	struct net_device_stats *stats = (struct net_device_stats *)data;
 	unsigned int rdes0 = le32_to_cpu(p->des0);
 	int ret = good_frame;
 
diff --git a/drivers/net/ethernet/stmicro/stmmac/hwif.h b/drivers/net/ethernet/stmicro/stmmac/hwif.h
index 16a7421715cb..4572d9a059b5 100644
--- a/drivers/net/ethernet/stmicro/stmmac/hwif.h
+++ b/drivers/net/ethernet/stmicro/stmmac/hwif.h
@@ -56,8 +56,9 @@ struct stmmac_desc_ops {
 	/* Last tx segment reports the transmit status */
 	int (*get_tx_ls)(struct dma_desc *p);
 	/* Return the transmit status looking at the TDES1 */
-	int (*tx_status)(void *data, struct stmmac_extra_stats *x,
-			struct dma_desc *p, void __iomem *ioaddr);
+	int (*tx_status)(struct net_device_stats *stats,
+			 struct stmmac_extra_stats *x,
+			 struct dma_desc *p, void __iomem *ioaddr);
 	/* Get the buffer size from the descriptor */
 	int (*get_tx_len)(struct dma_desc *p);
 	/* Handle extra events on specific interrupts hw dependent */
@@ -65,10 +66,12 @@ struct stmmac_desc_ops {
 	/* Get the receive frame size */
 	int (*get_rx_frame_len)(struct dma_desc *p, int rx_coe_type);
 	/* Return the reception status looking at the RDES1 */
-	int (*rx_status)(void *data, struct stmmac_extra_stats *x,
-			struct dma_desc *p);
-	void (*rx_extended_status)(void *data, struct stmmac_extra_stats *x,
-			struct dma_extended_desc *p);
+	int (*rx_status)(struct net_device_stats *stats,
+			 struct stmmac_extra_stats *x,
+			 struct dma_desc *p);
+	void (*rx_extended_status)(struct net_device_stats *stats,
+				   struct stmmac_extra_stats *x,
+				   struct dma_extended_desc *p);
 	/* Set tx timestamp enable bit */
 	void (*enable_tx_timestamp) (struct dma_desc *p);
 	/* get tx timestamp status */
@@ -185,8 +188,9 @@ struct stmmac_dma_ops {
 	void (*dma_tx_mode)(void __iomem *ioaddr, int mode, u32 channel,
 			    int fifosz, u8 qmode);
 	/* To track extra statistic (if supported) */
-	void (*dma_diagnostic_fr) (void *data, struct stmmac_extra_stats *x,
-				   void __iomem *ioaddr);
+	void (*dma_diagnostic_fr)(struct net_device_stats *stats,
+				  struct stmmac_extra_stats *x,
+				  void __iomem *ioaddr);
 	void (*enable_dma_transmission) (void __iomem *ioaddr);
 	void (*enable_dma_irq)(void __iomem *ioaddr, u32 chan,
 			       bool rx, bool tx);
@@ -535,16 +539,20 @@ struct stmmac_hwtimestamp {
 #define stmmac_timestamp_interrupt(__priv, __args...) \
 	stmmac_do_void_callback(__priv, ptp, timestamp_interrupt, __args)
 
+struct stmmac_tx_queue;
+struct stmmac_rx_queue;
+
 /* Helpers to manage the descriptors for chain and ring modes */
 struct stmmac_mode_ops {
 	void (*init) (void *des, dma_addr_t phy_addr, unsigned int size,
 		      unsigned int extend_desc);
 	unsigned int (*is_jumbo_frm) (int len, int ehn_desc);
-	int (*jumbo_frm)(void *priv, struct sk_buff *skb, int csum);
+	int (*jumbo_frm)(struct stmmac_tx_queue *tx_q, struct sk_buff *skb,
+			 int csum);
 	int (*set_16kib_bfsize)(int mtu);
 	void (*init_desc3)(struct dma_desc *p);
-	void (*refill_desc3) (void *priv, struct dma_desc *p);
-	void (*clean_desc3) (void *priv, struct dma_desc *p);
+	void (*refill_desc3)(struct stmmac_rx_queue *rx_q, struct dma_desc *p);
+	void (*clean_desc3)(struct stmmac_tx_queue *tx_q, struct dma_desc *p);
 };
 
 #define stmmac_mode_init(__priv, __args...) \
diff --git a/drivers/net/ethernet/stmicro/stmmac/norm_desc.c b/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
index e3da4da242ee..350e6670a576 100644
--- a/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
@@ -12,10 +12,10 @@
 #include "common.h"
 #include "descs_com.h"
 
-static int ndesc_get_tx_status(void *data, struct stmmac_extra_stats *x,
+static int ndesc_get_tx_status(struct net_device_stats *stats,
+			       struct stmmac_extra_stats *x,
 			       struct dma_desc *p, void __iomem *ioaddr)
 {
-	struct net_device_stats *stats = (struct net_device_stats *)data;
 	unsigned int tdes0 = le32_to_cpu(p->des0);
 	unsigned int tdes1 = le32_to_cpu(p->des1);
 	int ret = tx_done;
@@ -70,12 +70,12 @@ static int ndesc_get_tx_len(struct dma_desc *p)
  * and, if required, updates the multicast statistics.
  * In case of success, it returns good_frame because the GMAC device
  * is supposed to be able to compute the csum in HW. */
-static int ndesc_get_rx_status(void *data, struct stmmac_extra_stats *x,
+static int ndesc_get_rx_status(struct net_device_stats *stats,
+			       struct stmmac_extra_stats *x,
 			       struct dma_desc *p)
 {
 	int ret = good_frame;
 	unsigned int rdes0 = le32_to_cpu(p->des0);
-	struct net_device_stats *stats = (struct net_device_stats *)data;
 
 	if (unlikely(rdes0 & RDES0_OWN))
 		return dma_own;
diff --git a/drivers/net/ethernet/stmicro/stmmac/ring_mode.c b/drivers/net/ethernet/stmicro/stmmac/ring_mode.c
index 2b5b17d8b8a0..d218412ca832 100644
--- a/drivers/net/ethernet/stmicro/stmmac/ring_mode.c
+++ b/drivers/net/ethernet/stmicro/stmmac/ring_mode.c
@@ -14,9 +14,9 @@
 
 #include "stmmac.h"
 
-static int jumbo_frm(void *p, struct sk_buff *skb, int csum)
+static int jumbo_frm(struct stmmac_tx_queue *tx_q, struct sk_buff *skb,
+		     int csum)
 {
-	struct stmmac_tx_queue *tx_q = (struct stmmac_tx_queue *)p;
 	unsigned int nopaged_len = skb_headlen(skb);
 	struct stmmac_priv *priv = tx_q->priv_data;
 	unsigned int entry = tx_q->cur_tx;
@@ -101,9 +101,8 @@ static unsigned int is_jumbo_frm(int len, int enh_desc)
 	return ret;
 }
 
-static void refill_desc3(void *priv_ptr, struct dma_desc *p)
+static void refill_desc3(struct stmmac_rx_queue *rx_q, struct dma_desc *p)
 {
-	struct stmmac_rx_queue *rx_q = priv_ptr;
 	struct stmmac_priv *priv = rx_q->priv_data;
 
 	/* Fill DES3 in case of RING mode */
@@ -117,9 +116,8 @@ static void init_desc3(struct dma_desc *p)
 	p->des3 = cpu_to_le32(le32_to_cpu(p->des2) + BUF_SIZE_8KiB);
 }
 
-static void clean_desc3(void *priv_ptr, struct dma_desc *p)
+static void clean_desc3(struct stmmac_tx_queue *tx_q, struct dma_desc *p)
 {
-	struct stmmac_tx_queue *tx_q = (struct stmmac_tx_queue *)priv_ptr;
 	struct stmmac_priv *priv = tx_q->priv_data;
 	unsigned int entry = tx_q->dirty_tx;
 
-- 
2.39.2

[PATCH net-next v3 08/12] net: stmmac: Pass stmmac_priv in some callbacks

[Andrew Halaney]

Passing stmmac_priv to some of the callbacks allows hwif implementations
to grab some data that platforms can customize. Adjust the callbacks
accordingly in preparation of such a platform customization.

Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
---

This patch (and the following patch) are replacements for
https://lore.kernel.org/netdev/20230320204153.21736840@kernel.org/
as was requested. Hopefully I was understanding the intent correctly :)

Changes since v2:
    * New, replacing old wrapper approach

 .../net/ethernet/stmicro/stmmac/dwmac-sun8i.c |  36 +++--
 .../ethernet/stmicro/stmmac/dwmac1000_core.c  |   3 +-
 .../ethernet/stmicro/stmmac/dwmac1000_dma.c   |  19 ++-
 .../ethernet/stmicro/stmmac/dwmac100_dma.c    |  10 +-
 .../net/ethernet/stmicro/stmmac/dwmac4_core.c |  14 +-
 .../net/ethernet/stmicro/stmmac/dwmac4_dma.c  |  44 ++++--
 .../net/ethernet/stmicro/stmmac/dwmac4_dma.h  |  38 +++--
 .../net/ethernet/stmicro/stmmac/dwmac4_lib.c  |  38 +++--
 .../net/ethernet/stmicro/stmmac/dwmac_dma.h   |  22 ++-
 .../net/ethernet/stmicro/stmmac/dwmac_lib.c   |  18 ++-
 .../ethernet/stmicro/stmmac/dwxgmac2_core.c   |   9 +-
 .../ethernet/stmicro/stmmac/dwxgmac2_dma.c    |  71 ++++++---
 drivers/net/ethernet/stmicro/stmmac/hwif.h    | 146 ++++++++++--------
 13 files changed, 291 insertions(+), 177 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
index f834472599f7..c2c592ba0eb8 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
@@ -304,7 +304,8 @@ static void sun8i_dwmac_dma_init(void __iomem *ioaddr,
 	writel(0x1FFFFFF, ioaddr + EMAC_INT_STA);
 }
 
-static void sun8i_dwmac_dma_init_rx(void __iomem *ioaddr,
+static void sun8i_dwmac_dma_init_rx(struct stmmac_priv *priv,
+				    void __iomem *ioaddr,
 				    struct stmmac_dma_cfg *dma_cfg,
 				    dma_addr_t dma_rx_phy, u32 chan)
 {
@@ -312,7 +313,8 @@ static void sun8i_dwmac_dma_init_rx(void __iomem *ioaddr,
 	writel(lower_32_bits(dma_rx_phy), ioaddr + EMAC_RX_DESC_LIST);
 }
 
-static void sun8i_dwmac_dma_init_tx(void __iomem *ioaddr,
+static void sun8i_dwmac_dma_init_tx(struct stmmac_priv *priv,
+				    void __iomem *ioaddr,
 				    struct stmmac_dma_cfg *dma_cfg,
 				    dma_addr_t dma_tx_phy, u32 chan)
 {
@@ -324,7 +326,8 @@ static void sun8i_dwmac_dma_init_tx(void __iomem *ioaddr,
  * Called from stmmac_dma_ops->dump_regs
  * Used for ethtool
  */
-static void sun8i_dwmac_dump_regs(void __iomem *ioaddr, u32 *reg_space)
+static void sun8i_dwmac_dump_regs(struct stmmac_priv *priv,
+				  void __iomem *ioaddr, u32 *reg_space)
 {
 	int i;
 
@@ -352,7 +355,8 @@ static void sun8i_dwmac_dump_mac_regs(struct mac_device_info *hw,
 	}
 }
 
-static void sun8i_dwmac_enable_dma_irq(void __iomem *ioaddr, u32 chan,
+static void sun8i_dwmac_enable_dma_irq(struct stmmac_priv *priv,
+				       void __iomem *ioaddr, u32 chan,
 				       bool rx, bool tx)
 {
 	u32 value = readl(ioaddr + EMAC_INT_EN);
@@ -365,7 +369,8 @@ static void sun8i_dwmac_enable_dma_irq(void __iomem *ioaddr, u32 chan,
 	writel(value, ioaddr + EMAC_INT_EN);
 }
 
-static void sun8i_dwmac_disable_dma_irq(void __iomem *ioaddr, u32 chan,
+static void sun8i_dwmac_disable_dma_irq(struct stmmac_priv *priv,
+					void __iomem *ioaddr, u32 chan,
 					bool rx, bool tx)
 {
 	u32 value = readl(ioaddr + EMAC_INT_EN);
@@ -378,7 +383,8 @@ static void sun8i_dwmac_disable_dma_irq(void __iomem *ioaddr, u32 chan,
 	writel(value, ioaddr + EMAC_INT_EN);
 }
 
-static void sun8i_dwmac_dma_start_tx(void __iomem *ioaddr, u32 chan)
+static void sun8i_dwmac_dma_start_tx(struct stmmac_priv *priv,
+				     void __iomem *ioaddr, u32 chan)
 {
 	u32 v;
 
@@ -398,7 +404,8 @@ static void sun8i_dwmac_enable_dma_transmission(void __iomem *ioaddr)
 	writel(v, ioaddr + EMAC_TX_CTL1);
 }
 
-static void sun8i_dwmac_dma_stop_tx(void __iomem *ioaddr, u32 chan)
+static void sun8i_dwmac_dma_stop_tx(struct stmmac_priv *priv,
+				    void __iomem *ioaddr, u32 chan)
 {
 	u32 v;
 
@@ -407,7 +414,8 @@ static void sun8i_dwmac_dma_stop_tx(void __iomem *ioaddr, u32 chan)
 	writel(v, ioaddr + EMAC_TX_CTL1);
 }
 
-static void sun8i_dwmac_dma_start_rx(void __iomem *ioaddr, u32 chan)
+static void sun8i_dwmac_dma_start_rx(struct stmmac_priv *priv,
+				     void __iomem *ioaddr, u32 chan)
 {
 	u32 v;
 
@@ -417,7 +425,8 @@ static void sun8i_dwmac_dma_start_rx(void __iomem *ioaddr, u32 chan)
 	writel(v, ioaddr + EMAC_RX_CTL1);
 }
 
-static void sun8i_dwmac_dma_stop_rx(void __iomem *ioaddr, u32 chan)
+static void sun8i_dwmac_dma_stop_rx(struct stmmac_priv *priv,
+				    void __iomem *ioaddr, u32 chan)
 {
 	u32 v;
 
@@ -426,7 +435,8 @@ static void sun8i_dwmac_dma_stop_rx(void __iomem *ioaddr, u32 chan)
 	writel(v, ioaddr + EMAC_RX_CTL1);
 }
 
-static int sun8i_dwmac_dma_interrupt(void __iomem *ioaddr,
+static int sun8i_dwmac_dma_interrupt(struct stmmac_priv *priv,
+				     void __iomem *ioaddr,
 				     struct stmmac_extra_stats *x, u32 chan,
 				     u32 dir)
 {
@@ -492,7 +502,8 @@ static int sun8i_dwmac_dma_interrupt(void __iomem *ioaddr,
 	return ret;
 }
 
-static void sun8i_dwmac_dma_operation_mode_rx(void __iomem *ioaddr, int mode,
+static void sun8i_dwmac_dma_operation_mode_rx(struct stmmac_priv *priv,
+					      void __iomem *ioaddr, int mode,
 					      u32 channel, int fifosz, u8 qmode)
 {
 	u32 v;
@@ -515,7 +526,8 @@ static void sun8i_dwmac_dma_operation_mode_rx(void __iomem *ioaddr, int mode,
 	writel(v, ioaddr + EMAC_RX_CTL1);
 }
 
-static void sun8i_dwmac_dma_operation_mode_tx(void __iomem *ioaddr, int mode,
+static void sun8i_dwmac_dma_operation_mode_tx(struct stmmac_priv *priv,
+					      void __iomem *ioaddr, int mode,
 					      u32 channel, int fifosz, u8 qmode)
 {
 	u32 v;
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
index 0e00dd83d027..3927609abc44 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
@@ -414,7 +414,8 @@ static void dwmac1000_get_adv_lp(void __iomem *ioaddr, struct rgmii_adv *adv)
 	dwmac_get_adv_lp(ioaddr, GMAC_PCS_BASE, adv);
 }
 
-static void dwmac1000_debug(void __iomem *ioaddr, struct stmmac_extra_stats *x,
+static void dwmac1000_debug(struct stmmac_priv *priv, void __iomem *ioaddr,
+			    struct stmmac_extra_stats *x,
 			    u32 rx_queues, u32 tx_queues)
 {
 	u32 value = readl(ioaddr + GMAC_DEBUG);
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c
index f5581db0ba9b..daf79cdbd3ec 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c
@@ -110,7 +110,8 @@ static void dwmac1000_dma_init(void __iomem *ioaddr,
 	writel(DMA_INTR_DEFAULT_MASK, ioaddr + DMA_INTR_ENA);
 }
 
-static void dwmac1000_dma_init_rx(void __iomem *ioaddr,
+static void dwmac1000_dma_init_rx(struct stmmac_priv *priv,
+				  void __iomem *ioaddr,
 				  struct stmmac_dma_cfg *dma_cfg,
 				  dma_addr_t dma_rx_phy, u32 chan)
 {
@@ -118,7 +119,8 @@ static void dwmac1000_dma_init_rx(void __iomem *ioaddr,
 	writel(lower_32_bits(dma_rx_phy), ioaddr + DMA_RCV_BASE_ADDR);
 }
 
-static void dwmac1000_dma_init_tx(void __iomem *ioaddr,
+static void dwmac1000_dma_init_tx(struct stmmac_priv *priv,
+				  void __iomem *ioaddr,
 				  struct stmmac_dma_cfg *dma_cfg,
 				  dma_addr_t dma_tx_phy, u32 chan)
 {
@@ -147,7 +149,8 @@ static u32 dwmac1000_configure_fc(u32 csr6, int rxfifosz)
 	return csr6;
 }
 
-static void dwmac1000_dma_operation_mode_rx(void __iomem *ioaddr, int mode,
+static void dwmac1000_dma_operation_mode_rx(struct stmmac_priv *priv,
+					    void __iomem *ioaddr, int mode,
 					    u32 channel, int fifosz, u8 qmode)
 {
 	u32 csr6 = readl(ioaddr + DMA_CONTROL);
@@ -175,7 +178,8 @@ static void dwmac1000_dma_operation_mode_rx(void __iomem *ioaddr, int mode,
 	writel(csr6, ioaddr + DMA_CONTROL);
 }
 
-static void dwmac1000_dma_operation_mode_tx(void __iomem *ioaddr, int mode,
+static void dwmac1000_dma_operation_mode_tx(struct stmmac_priv *priv,
+					    void __iomem *ioaddr, int mode,
 					    u32 channel, int fifosz, u8 qmode)
 {
 	u32 csr6 = readl(ioaddr + DMA_CONTROL);
@@ -208,7 +212,8 @@ static void dwmac1000_dma_operation_mode_tx(void __iomem *ioaddr, int mode,
 	writel(csr6, ioaddr + DMA_CONTROL);
 }
 
-static void dwmac1000_dump_dma_regs(void __iomem *ioaddr, u32 *reg_space)
+static void dwmac1000_dump_dma_regs(struct stmmac_priv *priv,
+				    void __iomem *ioaddr, u32 *reg_space)
 {
 	int i;
 
@@ -263,8 +268,8 @@ static int dwmac1000_get_hw_feature(void __iomem *ioaddr,
 	return 0;
 }
 
-static void dwmac1000_rx_watchdog(void __iomem *ioaddr, u32 riwt,
-				  u32 queue)
+static void dwmac1000_rx_watchdog(struct stmmac_priv *priv,
+				  void __iomem *ioaddr, u32 riwt, u32 queue)
 {
 	writel(riwt, ioaddr + DMA_RX_WATCHDOG);
 }
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
index f6abc7bfd29d..1c32b1788f02 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
@@ -29,7 +29,7 @@ static void dwmac100_dma_init(void __iomem *ioaddr,
 	writel(DMA_INTR_DEFAULT_MASK, ioaddr + DMA_INTR_ENA);
 }
 
-static void dwmac100_dma_init_rx(void __iomem *ioaddr,
+static void dwmac100_dma_init_rx(struct stmmac_priv *priv, void __iomem *ioaddr,
 				 struct stmmac_dma_cfg *dma_cfg,
 				 dma_addr_t dma_rx_phy, u32 chan)
 {
@@ -37,7 +37,7 @@ static void dwmac100_dma_init_rx(void __iomem *ioaddr,
 	writel(lower_32_bits(dma_rx_phy), ioaddr + DMA_RCV_BASE_ADDR);
 }
 
-static void dwmac100_dma_init_tx(void __iomem *ioaddr,
+static void dwmac100_dma_init_tx(struct stmmac_priv *priv, void __iomem *ioaddr,
 				 struct stmmac_dma_cfg *dma_cfg,
 				 dma_addr_t dma_tx_phy, u32 chan)
 {
@@ -50,7 +50,8 @@ static void dwmac100_dma_init_tx(void __iomem *ioaddr,
  * The transmit threshold can be programmed by setting the TTC bits in the DMA
  * control register.
  */
-static void dwmac100_dma_operation_mode_tx(void __iomem *ioaddr, int mode,
+static void dwmac100_dma_operation_mode_tx(struct stmmac_priv *priv,
+					   void __iomem *ioaddr, int mode,
 					   u32 channel, int fifosz, u8 qmode)
 {
 	u32 csr6 = readl(ioaddr + DMA_CONTROL);
@@ -65,7 +66,8 @@ static void dwmac100_dma_operation_mode_tx(void __iomem *ioaddr, int mode,
 	writel(csr6, ioaddr + DMA_CONTROL);
 }
 
-static void dwmac100_dump_dma_regs(void __iomem *ioaddr, u32 *reg_space)
+static void dwmac100_dump_dma_regs(struct stmmac_priv *priv,
+				   void __iomem *ioaddr, u32 *reg_space)
 {
 	int i;
 
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
index 36251ec2589c..f44180519638 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
@@ -198,7 +198,8 @@ static void dwmac4_prog_mtl_tx_algorithms(struct mac_device_info *hw,
 	writel(value, ioaddr + MTL_OPERATION_MODE);
 }
 
-static void dwmac4_set_mtl_tx_queue_weight(struct mac_device_info *hw,
+static void dwmac4_set_mtl_tx_queue_weight(struct stmmac_priv *priv,
+					   struct mac_device_info *hw,
 					   u32 weight, u32 queue)
 {
 	void __iomem *ioaddr = hw->pcsr;
@@ -227,7 +228,8 @@ static void dwmac4_map_mtl_dma(struct mac_device_info *hw, u32 queue, u32 chan)
 	}
 }
 
-static void dwmac4_config_cbs(struct mac_device_info *hw,
+static void dwmac4_config_cbs(struct stmmac_priv *priv,
+			      struct mac_device_info *hw,
 			      u32 send_slope, u32 idle_slope,
 			      u32 high_credit, u32 low_credit, u32 queue)
 {
@@ -253,7 +255,7 @@ static void dwmac4_config_cbs(struct mac_device_info *hw,
 	writel(value, ioaddr + MTL_SEND_SLP_CREDX_BASE_ADDR(queue));
 
 	/* configure idle slope (same register as tx weight) */
-	dwmac4_set_mtl_tx_queue_weight(hw, idle_slope, queue);
+	dwmac4_set_mtl_tx_queue_weight(priv, hw, idle_slope, queue);
 
 	/* configure high credit */
 	value = readl(ioaddr + MTL_HIGH_CREDX_BASE_ADDR(queue));
@@ -759,7 +761,8 @@ static void dwmac4_phystatus(void __iomem *ioaddr, struct stmmac_extra_stats *x)
 	}
 }
 
-static int dwmac4_irq_mtl_status(struct mac_device_info *hw, u32 chan)
+static int dwmac4_irq_mtl_status(struct stmmac_priv *priv,
+				 struct mac_device_info *hw, u32 chan)
 {
 	void __iomem *ioaddr = hw->pcsr;
 	u32 mtl_int_qx_status;
@@ -833,7 +836,8 @@ static int dwmac4_irq_status(struct mac_device_info *hw,
 	return ret;
 }
 
-static void dwmac4_debug(void __iomem *ioaddr, struct stmmac_extra_stats *x,
+static void dwmac4_debug(struct stmmac_priv *priv, void __iomem *ioaddr,
+			 struct stmmac_extra_stats *x,
 			 u32 rx_queues, u32 tx_queues)
 {
 	u32 value;
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
index d99fa028c646..6f255d12f60f 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
@@ -68,7 +68,8 @@ static void dwmac4_dma_axi(void __iomem *ioaddr, struct stmmac_axi *axi)
 	writel(value, ioaddr + DMA_SYS_BUS_MODE);
 }
 
-static void dwmac4_dma_init_rx_chan(void __iomem *ioaddr,
+static void dwmac4_dma_init_rx_chan(struct stmmac_priv *priv,
+				    void __iomem *ioaddr,
 				    struct stmmac_dma_cfg *dma_cfg,
 				    dma_addr_t dma_rx_phy, u32 chan)
 {
@@ -86,7 +87,8 @@ static void dwmac4_dma_init_rx_chan(void __iomem *ioaddr,
 	writel(lower_32_bits(dma_rx_phy), ioaddr + DMA_CHAN_RX_BASE_ADDR(chan));
 }
 
-static void dwmac4_dma_init_tx_chan(void __iomem *ioaddr,
+static void dwmac4_dma_init_tx_chan(struct stmmac_priv *priv,
+				    void __iomem *ioaddr,
 				    struct stmmac_dma_cfg *dma_cfg,
 				    dma_addr_t dma_tx_phy, u32 chan)
 {
@@ -108,7 +110,8 @@ static void dwmac4_dma_init_tx_chan(void __iomem *ioaddr,
 	writel(lower_32_bits(dma_tx_phy), ioaddr + DMA_CHAN_TX_BASE_ADDR(chan));
 }
 
-static void dwmac4_dma_init_channel(void __iomem *ioaddr,
+static void dwmac4_dma_init_channel(struct stmmac_priv *priv,
+				    void __iomem *ioaddr,
 				    struct stmmac_dma_cfg *dma_cfg, u32 chan)
 {
 	u32 value;
@@ -124,7 +127,8 @@ static void dwmac4_dma_init_channel(void __iomem *ioaddr,
 	       ioaddr + DMA_CHAN_INTR_ENA(chan));
 }
 
-static void dwmac410_dma_init_channel(void __iomem *ioaddr,
+static void dwmac410_dma_init_channel(struct stmmac_priv *priv,
+				      void __iomem *ioaddr,
 				      struct stmmac_dma_cfg *dma_cfg, u32 chan)
 {
 	u32 value;
@@ -176,7 +180,8 @@ static void dwmac4_dma_init(void __iomem *ioaddr,
 
 }
 
-static void _dwmac4_dump_dma_regs(void __iomem *ioaddr, u32 channel,
+static void _dwmac4_dump_dma_regs(struct stmmac_priv *priv,
+				  void __iomem *ioaddr, u32 channel,
 				  u32 *reg_space)
 {
 	reg_space[DMA_CHAN_CONTROL(channel) / 4] =
@@ -215,20 +220,23 @@ static void _dwmac4_dump_dma_regs(void __iomem *ioaddr, u32 channel,
 		readl(ioaddr + DMA_CHAN_STATUS(channel));
 }
 
-static void dwmac4_dump_dma_regs(void __iomem *ioaddr, u32 *reg_space)
+static void dwmac4_dump_dma_regs(struct stmmac_priv *priv, void __iomem *ioaddr,
+				 u32 *reg_space)
 {
 	int i;
 
 	for (i = 0; i < DMA_CHANNEL_NB_MAX; i++)
-		_dwmac4_dump_dma_regs(ioaddr, i, reg_space);
+		_dwmac4_dump_dma_regs(priv, ioaddr, i, reg_space);
 }
 
-static void dwmac4_rx_watchdog(void __iomem *ioaddr, u32 riwt, u32 queue)
+static void dwmac4_rx_watchdog(struct stmmac_priv *priv, void __iomem *ioaddr,
+			       u32 riwt, u32 queue)
 {
 	writel(riwt, ioaddr + DMA_CHAN_RX_WATCHDOG(queue));
 }
 
-static void dwmac4_dma_rx_chan_op_mode(void __iomem *ioaddr, int mode,
+static void dwmac4_dma_rx_chan_op_mode(struct stmmac_priv *priv,
+				       void __iomem *ioaddr, int mode,
 				       u32 channel, int fifosz, u8 qmode)
 {
 	unsigned int rqs = fifosz / 256 - 1;
@@ -295,7 +303,8 @@ static void dwmac4_dma_rx_chan_op_mode(void __iomem *ioaddr, int mode,
 	writel(mtl_rx_op, ioaddr + MTL_CHAN_RX_OP_MODE(channel));
 }
 
-static void dwmac4_dma_tx_chan_op_mode(void __iomem *ioaddr, int mode,
+static void dwmac4_dma_tx_chan_op_mode(struct stmmac_priv *priv,
+				       void __iomem *ioaddr, int mode,
 				       u32 channel, int fifosz, u8 qmode)
 {
 	u32 mtl_tx_op = readl(ioaddr + MTL_CHAN_TX_OP_MODE(channel));
@@ -442,7 +451,8 @@ static int dwmac4_get_hw_feature(void __iomem *ioaddr,
 }
 
 /* Enable/disable TSO feature and set MSS */
-static void dwmac4_enable_tso(void __iomem *ioaddr, bool en, u32 chan)
+static void dwmac4_enable_tso(struct stmmac_priv *priv, void __iomem *ioaddr,
+			      bool en, u32 chan)
 {
 	u32 value;
 
@@ -459,7 +469,8 @@ static void dwmac4_enable_tso(void __iomem *ioaddr, bool en, u32 chan)
 	}
 }
 
-static void dwmac4_qmode(void __iomem *ioaddr, u32 channel, u8 qmode)
+static void dwmac4_qmode(struct stmmac_priv *priv, void __iomem *ioaddr,
+			 u32 channel, u8 qmode)
 {
 	u32 mtl_tx_op = readl(ioaddr + MTL_CHAN_TX_OP_MODE(channel));
 
@@ -472,7 +483,8 @@ static void dwmac4_qmode(void __iomem *ioaddr, u32 channel, u8 qmode)
 	writel(mtl_tx_op, ioaddr +  MTL_CHAN_TX_OP_MODE(channel));
 }
 
-static void dwmac4_set_bfsize(void __iomem *ioaddr, int bfsize, u32 chan)
+static void dwmac4_set_bfsize(struct stmmac_priv *priv, void __iomem *ioaddr,
+			      int bfsize, u32 chan)
 {
 	u32 value = readl(ioaddr + DMA_CHAN_RX_CONTROL(chan));
 
@@ -482,7 +494,8 @@ static void dwmac4_set_bfsize(void __iomem *ioaddr, int bfsize, u32 chan)
 	writel(value, ioaddr + DMA_CHAN_RX_CONTROL(chan));
 }
 
-static void dwmac4_enable_sph(void __iomem *ioaddr, bool en, u32 chan)
+static void dwmac4_enable_sph(struct stmmac_priv *priv, void __iomem *ioaddr,
+			      bool en, u32 chan)
 {
 	u32 value = readl(ioaddr + GMAC_EXT_CONFIG);
 
@@ -498,7 +511,8 @@ static void dwmac4_enable_sph(void __iomem *ioaddr, bool en, u32 chan)
 	writel(value, ioaddr + DMA_CHAN_CONTROL(chan));
 }
 
-static int dwmac4_enable_tbs(void __iomem *ioaddr, bool en, u32 chan)
+static int dwmac4_enable_tbs(struct stmmac_priv *priv, void __iomem *ioaddr,
+			     bool en, u32 chan)
 {
 	u32 value = readl(ioaddr + DMA_CHAN_TX_CONTROL(chan));
 
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h
index 9321879b599c..740c3bc8d9a0 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h
@@ -220,19 +220,31 @@
 #define DMA_CHAN0_DBG_STAT_RPS_SHIFT	8
 
 int dwmac4_dma_reset(void __iomem *ioaddr);
-void dwmac4_enable_dma_irq(void __iomem *ioaddr, u32 chan, bool rx, bool tx);
-void dwmac410_enable_dma_irq(void __iomem *ioaddr, u32 chan, bool rx, bool tx);
-void dwmac4_disable_dma_irq(void __iomem *ioaddr, u32 chan, bool rx, bool tx);
-void dwmac410_disable_dma_irq(void __iomem *ioaddr, u32 chan, bool rx, bool tx);
-void dwmac4_dma_start_tx(void __iomem *ioaddr, u32 chan);
-void dwmac4_dma_stop_tx(void __iomem *ioaddr, u32 chan);
-void dwmac4_dma_start_rx(void __iomem *ioaddr, u32 chan);
-void dwmac4_dma_stop_rx(void __iomem *ioaddr, u32 chan);
-int dwmac4_dma_interrupt(void __iomem *ioaddr,
+void dwmac4_enable_dma_irq(struct stmmac_priv *priv, void __iomem *ioaddr,
+			   u32 chan, bool rx, bool tx);
+void dwmac410_enable_dma_irq(struct stmmac_priv *priv, void __iomem *ioaddr,
+			     u32 chan, bool rx, bool tx);
+void dwmac4_disable_dma_irq(struct stmmac_priv *priv, void __iomem *ioaddr,
+			    u32 chan, bool rx, bool tx);
+void dwmac410_disable_dma_irq(struct stmmac_priv *priv, void __iomem *ioaddr,
+			      u32 chan, bool rx, bool tx);
+void dwmac4_dma_start_tx(struct stmmac_priv *priv, void __iomem *ioaddr,
+			 u32 chan);
+void dwmac4_dma_stop_tx(struct stmmac_priv *priv, void __iomem *ioaddr,
+			u32 chan);
+void dwmac4_dma_start_rx(struct stmmac_priv *priv, void __iomem *ioaddr,
+			 u32 chan);
+void dwmac4_dma_stop_rx(struct stmmac_priv *priv, void __iomem *ioaddr,
+			u32 chan);
+int dwmac4_dma_interrupt(struct stmmac_priv *priv, void __iomem *ioaddr,
 			 struct stmmac_extra_stats *x, u32 chan, u32 dir);
-void dwmac4_set_rx_ring_len(void __iomem *ioaddr, u32 len, u32 chan);
-void dwmac4_set_tx_ring_len(void __iomem *ioaddr, u32 len, u32 chan);
-void dwmac4_set_rx_tail_ptr(void __iomem *ioaddr, u32 tail_ptr, u32 chan);
-void dwmac4_set_tx_tail_ptr(void __iomem *ioaddr, u32 tail_ptr, u32 chan);
+void dwmac4_set_rx_ring_len(struct stmmac_priv *priv, void __iomem *ioaddr,
+			    u32 len, u32 chan);
+void dwmac4_set_tx_ring_len(struct stmmac_priv *priv, void __iomem *ioaddr,
+			    u32 len, u32 chan);
+void dwmac4_set_rx_tail_ptr(struct stmmac_priv *priv, void __iomem *ioaddr,
+			    u32 tail_ptr, u32 chan);
+void dwmac4_set_tx_tail_ptr(struct stmmac_priv *priv, void __iomem *ioaddr,
+			    u32 tail_ptr, u32 chan);
 
 #endif /* __DWMAC4_DMA_H__ */
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c
index d1c605777985..5e9c495aa03e 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c
@@ -25,17 +25,20 @@ int dwmac4_dma_reset(void __iomem *ioaddr)
 				 10000, 1000000);
 }
 
-void dwmac4_set_rx_tail_ptr(void __iomem *ioaddr, u32 tail_ptr, u32 chan)
+void dwmac4_set_rx_tail_ptr(struct stmmac_priv *priv, void __iomem *ioaddr,
+			    u32 tail_ptr, u32 chan)
 {
 	writel(tail_ptr, ioaddr + DMA_CHAN_RX_END_ADDR(chan));
 }
 
-void dwmac4_set_tx_tail_ptr(void __iomem *ioaddr, u32 tail_ptr, u32 chan)
+void dwmac4_set_tx_tail_ptr(struct stmmac_priv *priv, void __iomem *ioaddr,
+			    u32 tail_ptr, u32 chan)
 {
 	writel(tail_ptr, ioaddr + DMA_CHAN_TX_END_ADDR(chan));
 }
 
-void dwmac4_dma_start_tx(void __iomem *ioaddr, u32 chan)
+void dwmac4_dma_start_tx(struct stmmac_priv *priv, void __iomem *ioaddr,
+			 u32 chan)
 {
 	u32 value = readl(ioaddr + DMA_CHAN_TX_CONTROL(chan));
 
@@ -47,7 +50,8 @@ void dwmac4_dma_start_tx(void __iomem *ioaddr, u32 chan)
 	writel(value, ioaddr + GMAC_CONFIG);
 }
 
-void dwmac4_dma_stop_tx(void __iomem *ioaddr, u32 chan)
+void dwmac4_dma_stop_tx(struct stmmac_priv *priv, void __iomem *ioaddr,
+			u32 chan)
 {
 	u32 value = readl(ioaddr + DMA_CHAN_TX_CONTROL(chan));
 
@@ -55,7 +59,8 @@ void dwmac4_dma_stop_tx(void __iomem *ioaddr, u32 chan)
 	writel(value, ioaddr + DMA_CHAN_TX_CONTROL(chan));
 }
 
-void dwmac4_dma_start_rx(void __iomem *ioaddr, u32 chan)
+void dwmac4_dma_start_rx(struct stmmac_priv *priv, void __iomem *ioaddr,
+			 u32 chan)
 {
 	u32 value = readl(ioaddr + DMA_CHAN_RX_CONTROL(chan));
 
@@ -68,7 +73,8 @@ void dwmac4_dma_start_rx(void __iomem *ioaddr, u32 chan)
 	writel(value, ioaddr + GMAC_CONFIG);
 }
 
-void dwmac4_dma_stop_rx(void __iomem *ioaddr, u32 chan)
+void dwmac4_dma_stop_rx(struct stmmac_priv *priv, void __iomem *ioaddr,
+			u32 chan)
 {
 	u32 value = readl(ioaddr + DMA_CHAN_RX_CONTROL(chan));
 
@@ -76,17 +82,20 @@ void dwmac4_dma_stop_rx(void __iomem *ioaddr, u32 chan)
 	writel(value, ioaddr + DMA_CHAN_RX_CONTROL(chan));
 }
 
-void dwmac4_set_tx_ring_len(void __iomem *ioaddr, u32 len, u32 chan)
+void dwmac4_set_tx_ring_len(struct stmmac_priv *priv, void __iomem *ioaddr,
+			    u32 len, u32 chan)
 {
 	writel(len, ioaddr + DMA_CHAN_TX_RING_LEN(chan));
 }
 
-void dwmac4_set_rx_ring_len(void __iomem *ioaddr, u32 len, u32 chan)
+void dwmac4_set_rx_ring_len(struct stmmac_priv *priv, void __iomem *ioaddr,
+			    u32 len, u32 chan)
 {
 	writel(len, ioaddr + DMA_CHAN_RX_RING_LEN(chan));
 }
 
-void dwmac4_enable_dma_irq(void __iomem *ioaddr, u32 chan, bool rx, bool tx)
+void dwmac4_enable_dma_irq(struct stmmac_priv *priv, void __iomem *ioaddr,
+			   u32 chan, bool rx, bool tx)
 {
 	u32 value = readl(ioaddr + DMA_CHAN_INTR_ENA(chan));
 
@@ -98,7 +107,8 @@ void dwmac4_enable_dma_irq(void __iomem *ioaddr, u32 chan, bool rx, bool tx)
 	writel(value, ioaddr + DMA_CHAN_INTR_ENA(chan));
 }
 
-void dwmac410_enable_dma_irq(void __iomem *ioaddr, u32 chan, bool rx, bool tx)
+void dwmac410_enable_dma_irq(struct stmmac_priv *priv, void __iomem *ioaddr,
+			     u32 chan, bool rx, bool tx)
 {
 	u32 value = readl(ioaddr + DMA_CHAN_INTR_ENA(chan));
 
@@ -110,7 +120,8 @@ void dwmac410_enable_dma_irq(void __iomem *ioaddr, u32 chan, bool rx, bool tx)
 	writel(value, ioaddr + DMA_CHAN_INTR_ENA(chan));
 }
 
-void dwmac4_disable_dma_irq(void __iomem *ioaddr, u32 chan, bool rx, bool tx)
+void dwmac4_disable_dma_irq(struct stmmac_priv *priv, void __iomem *ioaddr,
+			    u32 chan, bool rx, bool tx)
 {
 	u32 value = readl(ioaddr + DMA_CHAN_INTR_ENA(chan));
 
@@ -122,7 +133,8 @@ void dwmac4_disable_dma_irq(void __iomem *ioaddr, u32 chan, bool rx, bool tx)
 	writel(value, ioaddr + DMA_CHAN_INTR_ENA(chan));
 }
 
-void dwmac410_disable_dma_irq(void __iomem *ioaddr, u32 chan, bool rx, bool tx)
+void dwmac410_disable_dma_irq(struct stmmac_priv *priv, void __iomem *ioaddr,
+			      u32 chan, bool rx, bool tx)
 {
 	u32 value = readl(ioaddr + DMA_CHAN_INTR_ENA(chan));
 
@@ -134,7 +146,7 @@ void dwmac410_disable_dma_irq(void __iomem *ioaddr, u32 chan, bool rx, bool tx)
 	writel(value, ioaddr + DMA_CHAN_INTR_ENA(chan));
 }
 
-int dwmac4_dma_interrupt(void __iomem *ioaddr,
+int dwmac4_dma_interrupt(struct stmmac_priv *priv, void __iomem *ioaddr,
 			 struct stmmac_extra_stats *x, u32 chan, u32 dir)
 {
 	u32 intr_status = readl(ioaddr + DMA_CHAN_STATUS(chan));
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h b/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h
index acd70b9a3173..72672391675f 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h
@@ -153,14 +153,20 @@
 #define NUM_DWMAC4_DMA_REGS	27
 
 void dwmac_enable_dma_transmission(void __iomem *ioaddr);
-void dwmac_enable_dma_irq(void __iomem *ioaddr, u32 chan, bool rx, bool tx);
-void dwmac_disable_dma_irq(void __iomem *ioaddr, u32 chan, bool rx, bool tx);
-void dwmac_dma_start_tx(void __iomem *ioaddr, u32 chan);
-void dwmac_dma_stop_tx(void __iomem *ioaddr, u32 chan);
-void dwmac_dma_start_rx(void __iomem *ioaddr, u32 chan);
-void dwmac_dma_stop_rx(void __iomem *ioaddr, u32 chan);
-int dwmac_dma_interrupt(void __iomem *ioaddr, struct stmmac_extra_stats *x,
-			u32 chan, u32 dir);
+void dwmac_enable_dma_irq(struct stmmac_priv *priv, void __iomem *ioaddr,
+			  u32 chan, bool rx, bool tx);
+void dwmac_disable_dma_irq(struct stmmac_priv *priv, void __iomem *ioaddr,
+			   u32 chan, bool rx, bool tx);
+void dwmac_dma_start_tx(struct stmmac_priv *priv, void __iomem *ioaddr,
+			u32 chan);
+void dwmac_dma_stop_tx(struct stmmac_priv *priv, void __iomem *ioaddr,
+		       u32 chan);
+void dwmac_dma_start_rx(struct stmmac_priv *priv, void __iomem *ioaddr,
+			u32 chan);
+void dwmac_dma_stop_rx(struct stmmac_priv *priv, void __iomem *ioaddr,
+		       u32 chan);
+int dwmac_dma_interrupt(struct stmmac_priv *priv, void __iomem *ioaddr,
+			struct stmmac_extra_stats *x, u32 chan, u32 dir);
 int dwmac_dma_reset(void __iomem *ioaddr);
 
 #endif /* __DWMAC_DMA_H__ */
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c b/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
index 9b6138b11776..0b6f999a8305 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
@@ -32,7 +32,8 @@ void dwmac_enable_dma_transmission(void __iomem *ioaddr)
 	writel(1, ioaddr + DMA_XMT_POLL_DEMAND);
 }
 
-void dwmac_enable_dma_irq(void __iomem *ioaddr, u32 chan, bool rx, bool tx)
+void dwmac_enable_dma_irq(struct stmmac_priv *priv, void __iomem *ioaddr,
+			  u32 chan, bool rx, bool tx)
 {
 	u32 value = readl(ioaddr + DMA_INTR_ENA);
 
@@ -44,7 +45,8 @@ void dwmac_enable_dma_irq(void __iomem *ioaddr, u32 chan, bool rx, bool tx)
 	writel(value, ioaddr + DMA_INTR_ENA);
 }
 
-void dwmac_disable_dma_irq(void __iomem *ioaddr, u32 chan, bool rx, bool tx)
+void dwmac_disable_dma_irq(struct stmmac_priv *priv, void __iomem *ioaddr,
+			   u32 chan, bool rx, bool tx)
 {
 	u32 value = readl(ioaddr + DMA_INTR_ENA);
 
@@ -56,28 +58,30 @@ void dwmac_disable_dma_irq(void __iomem *ioaddr, u32 chan, bool rx, bool tx)
 	writel(value, ioaddr + DMA_INTR_ENA);
 }
 
-void dwmac_dma_start_tx(void __iomem *ioaddr, u32 chan)
+void dwmac_dma_start_tx(struct stmmac_priv *priv, void __iomem *ioaddr,
+			u32 chan)
 {
 	u32 value = readl(ioaddr + DMA_CONTROL);
 	value |= DMA_CONTROL_ST;
 	writel(value, ioaddr + DMA_CONTROL);
 }
 
-void dwmac_dma_stop_tx(void __iomem *ioaddr, u32 chan)
+void dwmac_dma_stop_tx(struct stmmac_priv *priv, void __iomem *ioaddr, u32 chan)
 {
 	u32 value = readl(ioaddr + DMA_CONTROL);
 	value &= ~DMA_CONTROL_ST;
 	writel(value, ioaddr + DMA_CONTROL);
 }
 
-void dwmac_dma_start_rx(void __iomem *ioaddr, u32 chan)
+void dwmac_dma_start_rx(struct stmmac_priv *priv, void __iomem *ioaddr,
+			u32 chan)
 {
 	u32 value = readl(ioaddr + DMA_CONTROL);
 	value |= DMA_CONTROL_SR;
 	writel(value, ioaddr + DMA_CONTROL);
 }
 
-void dwmac_dma_stop_rx(void __iomem *ioaddr, u32 chan)
+void dwmac_dma_stop_rx(struct stmmac_priv *priv, void __iomem *ioaddr, u32 chan)
 {
 	u32 value = readl(ioaddr + DMA_CONTROL);
 	value &= ~DMA_CONTROL_SR;
@@ -154,7 +158,7 @@ static void show_rx_process_state(unsigned int status)
 }
 #endif
 
-int dwmac_dma_interrupt(void __iomem *ioaddr,
+int dwmac_dma_interrupt(struct stmmac_priv *priv, void __iomem *ioaddr,
 			struct stmmac_extra_stats *x, u32 chan, u32 dir)
 {
 	int ret = 0;
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
index c6c4d7948fe5..a0c2ef8bb0ac 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
@@ -187,7 +187,8 @@ static void dwxgmac2_prog_mtl_tx_algorithms(struct mac_device_info *hw,
 	}
 }
 
-static void dwxgmac2_set_mtl_tx_queue_weight(struct mac_device_info *hw,
+static void dwxgmac2_set_mtl_tx_queue_weight(struct stmmac_priv *priv,
+					     struct mac_device_info *hw,
 					     u32 weight, u32 queue)
 {
 	void __iomem *ioaddr = hw->pcsr;
@@ -212,7 +213,8 @@ static void dwxgmac2_map_mtl_to_dma(struct mac_device_info *hw, u32 queue,
 	writel(value, ioaddr + reg);
 }
 
-static void dwxgmac2_config_cbs(struct mac_device_info *hw,
+static void dwxgmac2_config_cbs(struct stmmac_priv *priv,
+				struct mac_device_info *hw,
 				u32 send_slope, u32 idle_slope,
 				u32 high_credit, u32 low_credit, u32 queue)
 {
@@ -276,7 +278,8 @@ static int dwxgmac2_host_irq_status(struct mac_device_info *hw,
 	return ret;
 }
 
-static int dwxgmac2_host_mtl_irq_status(struct mac_device_info *hw, u32 chan)
+static int dwxgmac2_host_mtl_irq_status(struct stmmac_priv *priv,
+					struct mac_device_info *hw, u32 chan)
 {
 	void __iomem *ioaddr = hw->pcsr;
 	int ret = 0;
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
index 5e98355f422b..dfd53264e036 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
@@ -33,7 +33,8 @@ static void dwxgmac2_dma_init(void __iomem *ioaddr,
 	writel(value, ioaddr + XGMAC_DMA_SYSBUS_MODE);
 }
 
-static void dwxgmac2_dma_init_chan(void __iomem *ioaddr,
+static void dwxgmac2_dma_init_chan(struct stmmac_priv *priv,
+				   void __iomem *ioaddr,
 				   struct stmmac_dma_cfg *dma_cfg, u32 chan)
 {
 	u32 value = readl(ioaddr + XGMAC_DMA_CH_CONTROL(chan));
@@ -45,7 +46,8 @@ static void dwxgmac2_dma_init_chan(void __iomem *ioaddr,
 	writel(XGMAC_DMA_INT_DEFAULT_EN, ioaddr + XGMAC_DMA_CH_INT_EN(chan));
 }
 
-static void dwxgmac2_dma_init_rx_chan(void __iomem *ioaddr,
+static void dwxgmac2_dma_init_rx_chan(struct stmmac_priv *priv,
+				      void __iomem *ioaddr,
 				      struct stmmac_dma_cfg *dma_cfg,
 				      dma_addr_t phy, u32 chan)
 {
@@ -61,7 +63,8 @@ static void dwxgmac2_dma_init_rx_chan(void __iomem *ioaddr,
 	writel(lower_32_bits(phy), ioaddr + XGMAC_DMA_CH_RxDESC_LADDR(chan));
 }
 
-static void dwxgmac2_dma_init_tx_chan(void __iomem *ioaddr,
+static void dwxgmac2_dma_init_tx_chan(struct stmmac_priv *priv,
+				      void __iomem *ioaddr,
 				      struct stmmac_dma_cfg *dma_cfg,
 				      dma_addr_t phy, u32 chan)
 {
@@ -131,7 +134,8 @@ static void dwxgmac2_dma_axi(void __iomem *ioaddr, struct stmmac_axi *axi)
 	writel(XGMAC_RDPS, ioaddr + XGMAC_RX_EDMA_CTRL);
 }
 
-static void dwxgmac2_dma_dump_regs(void __iomem *ioaddr, u32 *reg_space)
+static void dwxgmac2_dma_dump_regs(struct stmmac_priv *priv,
+				   void __iomem *ioaddr, u32 *reg_space)
 {
 	int i;
 
@@ -139,8 +143,8 @@ static void dwxgmac2_dma_dump_regs(void __iomem *ioaddr, u32 *reg_space)
 		reg_space[i] = readl(ioaddr + i * 4);
 }
 
-static void dwxgmac2_dma_rx_mode(void __iomem *ioaddr, int mode,
-				 u32 channel, int fifosz, u8 qmode)
+static void dwxgmac2_dma_rx_mode(struct stmmac_priv *priv, void __iomem *ioaddr,
+				 int mode, u32 channel, int fifosz, u8 qmode)
 {
 	u32 value = readl(ioaddr + XGMAC_MTL_RXQ_OPMODE(channel));
 	unsigned int rqs = fifosz / 256 - 1;
@@ -205,8 +209,8 @@ static void dwxgmac2_dma_rx_mode(void __iomem *ioaddr, int mode,
 	writel(value | XGMAC_RXOIE, ioaddr + XGMAC_MTL_QINTEN(channel));
 }
 
-static void dwxgmac2_dma_tx_mode(void __iomem *ioaddr, int mode,
-				 u32 channel, int fifosz, u8 qmode)
+static void dwxgmac2_dma_tx_mode(struct stmmac_priv *priv, void __iomem *ioaddr,
+				 int mode, u32 channel, int fifosz, u8 qmode)
 {
 	u32 value = readl(ioaddr + XGMAC_MTL_TXQ_OPMODE(channel));
 	unsigned int tqs = fifosz / 256 - 1;
@@ -248,7 +252,8 @@ static void dwxgmac2_dma_tx_mode(void __iomem *ioaddr, int mode,
 	writel(value, ioaddr +  XGMAC_MTL_TXQ_OPMODE(channel));
 }
 
-static void dwxgmac2_enable_dma_irq(void __iomem *ioaddr, u32 chan,
+static void dwxgmac2_enable_dma_irq(struct stmmac_priv *priv,
+				    void __iomem *ioaddr, u32 chan,
 				    bool rx, bool tx)
 {
 	u32 value = readl(ioaddr + XGMAC_DMA_CH_INT_EN(chan));
@@ -261,7 +266,8 @@ static void dwxgmac2_enable_dma_irq(void __iomem *ioaddr, u32 chan,
 	writel(value, ioaddr + XGMAC_DMA_CH_INT_EN(chan));
 }
 
-static void dwxgmac2_disable_dma_irq(void __iomem *ioaddr, u32 chan,
+static void dwxgmac2_disable_dma_irq(struct stmmac_priv *priv,
+				     void __iomem *ioaddr, u32 chan,
 				     bool rx, bool tx)
 {
 	u32 value = readl(ioaddr + XGMAC_DMA_CH_INT_EN(chan));
@@ -274,7 +280,8 @@ static void dwxgmac2_disable_dma_irq(void __iomem *ioaddr, u32 chan,
 	writel(value, ioaddr + XGMAC_DMA_CH_INT_EN(chan));
 }
 
-static void dwxgmac2_dma_start_tx(void __iomem *ioaddr, u32 chan)
+static void dwxgmac2_dma_start_tx(struct stmmac_priv *priv,
+				  void __iomem *ioaddr, u32 chan)
 {
 	u32 value;
 
@@ -287,7 +294,8 @@ static void dwxgmac2_dma_start_tx(void __iomem *ioaddr, u32 chan)
 	writel(value, ioaddr + XGMAC_TX_CONFIG);
 }
 
-static void dwxgmac2_dma_stop_tx(void __iomem *ioaddr, u32 chan)
+static void dwxgmac2_dma_stop_tx(struct stmmac_priv *priv, void __iomem *ioaddr,
+				 u32 chan)
 {
 	u32 value;
 
@@ -300,7 +308,8 @@ static void dwxgmac2_dma_stop_tx(void __iomem *ioaddr, u32 chan)
 	writel(value, ioaddr + XGMAC_TX_CONFIG);
 }
 
-static void dwxgmac2_dma_start_rx(void __iomem *ioaddr, u32 chan)
+static void dwxgmac2_dma_start_rx(struct stmmac_priv *priv,
+				  void __iomem *ioaddr, u32 chan)
 {
 	u32 value;
 
@@ -313,7 +322,8 @@ static void dwxgmac2_dma_start_rx(void __iomem *ioaddr, u32 chan)
 	writel(value, ioaddr + XGMAC_RX_CONFIG);
 }
 
-static void dwxgmac2_dma_stop_rx(void __iomem *ioaddr, u32 chan)
+static void dwxgmac2_dma_stop_rx(struct stmmac_priv *priv, void __iomem *ioaddr,
+				 u32 chan)
 {
 	u32 value;
 
@@ -322,7 +332,8 @@ static void dwxgmac2_dma_stop_rx(void __iomem *ioaddr, u32 chan)
 	writel(value, ioaddr + XGMAC_DMA_CH_RX_CONTROL(chan));
 }
 
-static int dwxgmac2_dma_interrupt(void __iomem *ioaddr,
+static int dwxgmac2_dma_interrupt(struct stmmac_priv *priv,
+				  void __iomem *ioaddr,
 				  struct stmmac_extra_stats *x, u32 chan,
 				  u32 dir)
 {
@@ -449,32 +460,38 @@ static int dwxgmac2_get_hw_feature(void __iomem *ioaddr,
 	return 0;
 }
 
-static void dwxgmac2_rx_watchdog(void __iomem *ioaddr, u32 riwt, u32 queue)
+static void dwxgmac2_rx_watchdog(struct stmmac_priv *priv, void __iomem *ioaddr,
+				 u32 riwt, u32 queue)
 {
 	writel(riwt & XGMAC_RWT, ioaddr + XGMAC_DMA_CH_Rx_WATCHDOG(queue));
 }
 
-static void dwxgmac2_set_rx_ring_len(void __iomem *ioaddr, u32 len, u32 chan)
+static void dwxgmac2_set_rx_ring_len(struct stmmac_priv *priv,
+				     void __iomem *ioaddr, u32 len, u32 chan)
 {
 	writel(len, ioaddr + XGMAC_DMA_CH_RxDESC_RING_LEN(chan));
 }
 
-static void dwxgmac2_set_tx_ring_len(void __iomem *ioaddr, u32 len, u32 chan)
+static void dwxgmac2_set_tx_ring_len(struct stmmac_priv *priv,
+				     void __iomem *ioaddr, u32 len, u32 chan)
 {
 	writel(len, ioaddr + XGMAC_DMA_CH_TxDESC_RING_LEN(chan));
 }
 
-static void dwxgmac2_set_rx_tail_ptr(void __iomem *ioaddr, u32 ptr, u32 chan)
+static void dwxgmac2_set_rx_tail_ptr(struct stmmac_priv *priv,
+				     void __iomem *ioaddr, u32 ptr, u32 chan)
 {
 	writel(ptr, ioaddr + XGMAC_DMA_CH_RxDESC_TAIL_LPTR(chan));
 }
 
-static void dwxgmac2_set_tx_tail_ptr(void __iomem *ioaddr, u32 ptr, u32 chan)
+static void dwxgmac2_set_tx_tail_ptr(struct stmmac_priv *priv,
+				     void __iomem *ioaddr, u32 ptr, u32 chan)
 {
 	writel(ptr, ioaddr + XGMAC_DMA_CH_TxDESC_TAIL_LPTR(chan));
 }
 
-static void dwxgmac2_enable_tso(void __iomem *ioaddr, bool en, u32 chan)
+static void dwxgmac2_enable_tso(struct stmmac_priv *priv, void __iomem *ioaddr,
+				bool en, u32 chan)
 {
 	u32 value = readl(ioaddr + XGMAC_DMA_CH_TX_CONTROL(chan));
 
@@ -486,7 +503,8 @@ static void dwxgmac2_enable_tso(void __iomem *ioaddr, bool en, u32 chan)
 	writel(value, ioaddr + XGMAC_DMA_CH_TX_CONTROL(chan));
 }
 
-static void dwxgmac2_qmode(void __iomem *ioaddr, u32 channel, u8 qmode)
+static void dwxgmac2_qmode(struct stmmac_priv *priv, void __iomem *ioaddr,
+			   u32 channel, u8 qmode)
 {
 	u32 value = readl(ioaddr + XGMAC_MTL_TXQ_OPMODE(channel));
 	u32 flow = readl(ioaddr + XGMAC_RX_FLOW_CTRL);
@@ -503,7 +521,8 @@ static void dwxgmac2_qmode(void __iomem *ioaddr, u32 channel, u8 qmode)
 	writel(value, ioaddr +  XGMAC_MTL_TXQ_OPMODE(channel));
 }
 
-static void dwxgmac2_set_bfsize(void __iomem *ioaddr, int bfsize, u32 chan)
+static void dwxgmac2_set_bfsize(struct stmmac_priv *priv, void __iomem *ioaddr,
+				int bfsize, u32 chan)
 {
 	u32 value;
 
@@ -513,7 +532,8 @@ static void dwxgmac2_set_bfsize(void __iomem *ioaddr, int bfsize, u32 chan)
 	writel(value, ioaddr + XGMAC_DMA_CH_RX_CONTROL(chan));
 }
 
-static void dwxgmac2_enable_sph(void __iomem *ioaddr, bool en, u32 chan)
+static void dwxgmac2_enable_sph(struct stmmac_priv *priv, void __iomem *ioaddr,
+				bool en, u32 chan)
 {
 	u32 value = readl(ioaddr + XGMAC_RX_CONFIG);
 
@@ -529,7 +549,8 @@ static void dwxgmac2_enable_sph(void __iomem *ioaddr, bool en, u32 chan)
 	writel(value, ioaddr + XGMAC_DMA_CH_CONTROL(chan));
 }
 
-static int dwxgmac2_enable_tbs(void __iomem *ioaddr, bool en, u32 chan)
+static int dwxgmac2_enable_tbs(struct stmmac_priv *priv, void __iomem *ioaddr,
+			       bool en, u32 chan)
 {
 	u32 value = readl(ioaddr + XGMAC_DMA_CH_TX_CONTROL(chan));
 
diff --git a/drivers/net/ethernet/stmicro/stmmac/hwif.h b/drivers/net/ethernet/stmicro/stmmac/hwif.h
index 4572d9a059b5..629c4a3f59e3 100644
--- a/drivers/net/ethernet/stmicro/stmmac/hwif.h
+++ b/drivers/net/ethernet/stmicro/stmmac/hwif.h
@@ -26,6 +26,7 @@
 })
 
 struct stmmac_extra_stats;
+struct stmmac_priv;
 struct stmmac_safety_stats;
 struct dma_desc;
 struct dma_extended_desc;
@@ -171,51 +172,67 @@ struct stmmac_dma_ops {
 	int (*reset)(void __iomem *ioaddr);
 	void (*init)(void __iomem *ioaddr, struct stmmac_dma_cfg *dma_cfg,
 		     int atds);
-	void (*init_chan)(void __iomem *ioaddr,
+	void (*init_chan)(struct stmmac_priv *priv, void __iomem *ioaddr,
 			  struct stmmac_dma_cfg *dma_cfg, u32 chan);
-	void (*init_rx_chan)(void __iomem *ioaddr,
+	void (*init_rx_chan)(struct stmmac_priv *priv, void __iomem *ioaddr,
 			     struct stmmac_dma_cfg *dma_cfg,
 			     dma_addr_t phy, u32 chan);
-	void (*init_tx_chan)(void __iomem *ioaddr,
+	void (*init_tx_chan)(struct stmmac_priv *priv, void __iomem *ioaddr,
 			     struct stmmac_dma_cfg *dma_cfg,
 			     dma_addr_t phy, u32 chan);
 	/* Configure the AXI Bus Mode Register */
 	void (*axi)(void __iomem *ioaddr, struct stmmac_axi *axi);
 	/* Dump DMA registers */
-	void (*dump_regs)(void __iomem *ioaddr, u32 *reg_space);
-	void (*dma_rx_mode)(void __iomem *ioaddr, int mode, u32 channel,
-			    int fifosz, u8 qmode);
-	void (*dma_tx_mode)(void __iomem *ioaddr, int mode, u32 channel,
+	void (*dump_regs)(struct stmmac_priv *priv, void __iomem *ioaddr,
+			  u32 *reg_space);
+	void (*dma_rx_mode)(struct stmmac_priv *priv, void __iomem *ioaddr,
+			    int mode, u32 channel,
 			    int fifosz, u8 qmode);
+	void (*dma_tx_mode)(struct stmmac_priv *priv, void __iomem *ioaddr,
+			    int mode, u32 channel, int fifosz, u8 qmode);
 	/* To track extra statistic (if supported) */
 	void (*dma_diagnostic_fr)(struct net_device_stats *stats,
 				  struct stmmac_extra_stats *x,
 				  void __iomem *ioaddr);
 	void (*enable_dma_transmission) (void __iomem *ioaddr);
-	void (*enable_dma_irq)(void __iomem *ioaddr, u32 chan,
-			       bool rx, bool tx);
-	void (*disable_dma_irq)(void __iomem *ioaddr, u32 chan,
-				bool rx, bool tx);
-	void (*start_tx)(void __iomem *ioaddr, u32 chan);
-	void (*stop_tx)(void __iomem *ioaddr, u32 chan);
-	void (*start_rx)(void __iomem *ioaddr, u32 chan);
-	void (*stop_rx)(void __iomem *ioaddr, u32 chan);
-	int (*dma_interrupt) (void __iomem *ioaddr,
-			      struct stmmac_extra_stats *x, u32 chan, u32 dir);
+	void (*enable_dma_irq)(struct stmmac_priv *priv, void __iomem *ioaddr,
+			       u32 chan, bool rx, bool tx);
+	void (*disable_dma_irq)(struct stmmac_priv *priv, void __iomem *ioaddr,
+				u32 chan, bool rx, bool tx);
+	void (*start_tx)(struct stmmac_priv *priv, void __iomem *ioaddr,
+			 u32 chan);
+	void (*stop_tx)(struct stmmac_priv *priv, void __iomem *ioaddr,
+			u32 chan);
+	void (*start_rx)(struct stmmac_priv *priv, void __iomem *ioaddr,
+			 u32 chan);
+	void (*stop_rx)(struct stmmac_priv *priv, void __iomem *ioaddr,
+			u32 chan);
+	int (*dma_interrupt)(struct stmmac_priv *priv, void __iomem *ioaddr,
+			     struct stmmac_extra_stats *x, u32 chan, u32 dir);
 	/* If supported then get the optional core features */
 	int (*get_hw_feature)(void __iomem *ioaddr,
 			      struct dma_features *dma_cap);
 	/* Program the HW RX Watchdog */
-	void (*rx_watchdog)(void __iomem *ioaddr, u32 riwt, u32 queue);
-	void (*set_tx_ring_len)(void __iomem *ioaddr, u32 len, u32 chan);
-	void (*set_rx_ring_len)(void __iomem *ioaddr, u32 len, u32 chan);
-	void (*set_rx_tail_ptr)(void __iomem *ioaddr, u32 tail_ptr, u32 chan);
-	void (*set_tx_tail_ptr)(void __iomem *ioaddr, u32 tail_ptr, u32 chan);
-	void (*enable_tso)(void __iomem *ioaddr, bool en, u32 chan);
-	void (*qmode)(void __iomem *ioaddr, u32 channel, u8 qmode);
-	void (*set_bfsize)(void __iomem *ioaddr, int bfsize, u32 chan);
-	void (*enable_sph)(void __iomem *ioaddr, bool en, u32 chan);
-	int (*enable_tbs)(void __iomem *ioaddr, bool en, u32 chan);
+	void (*rx_watchdog)(struct stmmac_priv *priv, void __iomem *ioaddr,
+			    u32 riwt, u32 queue);
+	void (*set_tx_ring_len)(struct stmmac_priv *priv, void __iomem *ioaddr,
+				u32 len, u32 chan);
+	void (*set_rx_ring_len)(struct stmmac_priv *priv, void __iomem *ioaddr,
+				u32 len, u32 chan);
+	void (*set_rx_tail_ptr)(struct stmmac_priv *priv, void __iomem *ioaddr,
+				u32 tail_ptr, u32 chan);
+	void (*set_tx_tail_ptr)(struct stmmac_priv *priv, void __iomem *ioaddr,
+				u32 tail_ptr, u32 chan);
+	void (*enable_tso)(struct stmmac_priv *priv, void __iomem *ioaddr,
+			   bool en, u32 chan);
+	void (*qmode)(struct stmmac_priv *priv, void __iomem *ioaddr,
+		      u32 channel, u8 qmode);
+	void (*set_bfsize)(struct stmmac_priv *priv, void __iomem *ioaddr,
+			   int bfsize, u32 chan);
+	void (*enable_sph)(struct stmmac_priv *priv, void __iomem *ioaddr,
+			   bool en, u32 chan);
+	int (*enable_tbs)(struct stmmac_priv *priv, void __iomem *ioaddr,
+			  bool en, u32 chan);
 };
 
 #define stmmac_reset(__priv, __args...) \
@@ -223,59 +240,59 @@ struct stmmac_dma_ops {
 #define stmmac_dma_init(__priv, __args...) \
 	stmmac_do_void_callback(__priv, dma, init, __args)
 #define stmmac_init_chan(__priv, __args...) \
-	stmmac_do_void_callback(__priv, dma, init_chan, __args)
+	stmmac_do_void_callback(__priv, dma, init_chan, __priv, __args)
 #define stmmac_init_rx_chan(__priv, __args...) \
-	stmmac_do_void_callback(__priv, dma, init_rx_chan, __args)
+	stmmac_do_void_callback(__priv, dma, init_rx_chan, __priv, __args)
 #define stmmac_init_tx_chan(__priv, __args...) \
-	stmmac_do_void_callback(__priv, dma, init_tx_chan, __args)
+	stmmac_do_void_callback(__priv, dma, init_tx_chan, __priv, __args)
 #define stmmac_axi(__priv, __args...) \
 	stmmac_do_void_callback(__priv, dma, axi, __args)
 #define stmmac_dump_dma_regs(__priv, __args...) \
-	stmmac_do_void_callback(__priv, dma, dump_regs, __args)
+	stmmac_do_void_callback(__priv, dma, dump_regs, __priv, __args)
 #define stmmac_dma_rx_mode(__priv, __args...) \
-	stmmac_do_void_callback(__priv, dma, dma_rx_mode, __args)
+	stmmac_do_void_callback(__priv, dma, dma_rx_mode, __priv, __args)
 #define stmmac_dma_tx_mode(__priv, __args...) \
-	stmmac_do_void_callback(__priv, dma, dma_tx_mode, __args)
+	stmmac_do_void_callback(__priv, dma, dma_tx_mode, __priv, __args)
 #define stmmac_dma_diagnostic_fr(__priv, __args...) \
 	stmmac_do_void_callback(__priv, dma, dma_diagnostic_fr, __args)
 #define stmmac_enable_dma_transmission(__priv, __args...) \
 	stmmac_do_void_callback(__priv, dma, enable_dma_transmission, __args)
 #define stmmac_enable_dma_irq(__priv, __args...) \
-	stmmac_do_void_callback(__priv, dma, enable_dma_irq, __args)
+	stmmac_do_void_callback(__priv, dma, enable_dma_irq, __priv, __args)
 #define stmmac_disable_dma_irq(__priv, __args...) \
-	stmmac_do_void_callback(__priv, dma, disable_dma_irq, __args)
+	stmmac_do_void_callback(__priv, dma, disable_dma_irq, __priv, __args)
 #define stmmac_start_tx(__priv, __args...) \
-	stmmac_do_void_callback(__priv, dma, start_tx, __args)
+	stmmac_do_void_callback(__priv, dma, start_tx, __priv, __args)
 #define stmmac_stop_tx(__priv, __args...) \
-	stmmac_do_void_callback(__priv, dma, stop_tx, __args)
+	stmmac_do_void_callback(__priv, dma, stop_tx, __priv, __args)
 #define stmmac_start_rx(__priv, __args...) \
-	stmmac_do_void_callback(__priv, dma, start_rx, __args)
+	stmmac_do_void_callback(__priv, dma, start_rx, __priv, __args)
 #define stmmac_stop_rx(__priv, __args...) \
-	stmmac_do_void_callback(__priv, dma, stop_rx, __args)
+	stmmac_do_void_callback(__priv, dma, stop_rx, __priv, __args)
 #define stmmac_dma_interrupt_status(__priv, __args...) \
-	stmmac_do_callback(__priv, dma, dma_interrupt, __args)
+	stmmac_do_callback(__priv, dma, dma_interrupt, __priv, __args)
 #define stmmac_get_hw_feature(__priv, __args...) \
 	stmmac_do_callback(__priv, dma, get_hw_feature, __args)
 #define stmmac_rx_watchdog(__priv, __args...) \
-	stmmac_do_void_callback(__priv, dma, rx_watchdog, __args)
+	stmmac_do_void_callback(__priv, dma, rx_watchdog, __priv, __args)
 #define stmmac_set_tx_ring_len(__priv, __args...) \
-	stmmac_do_void_callback(__priv, dma, set_tx_ring_len, __args)
+	stmmac_do_void_callback(__priv, dma, set_tx_ring_len, __priv, __args)
 #define stmmac_set_rx_ring_len(__priv, __args...) \
-	stmmac_do_void_callback(__priv, dma, set_rx_ring_len, __args)
+	stmmac_do_void_callback(__priv, dma, set_rx_ring_len, __priv, __args)
 #define stmmac_set_rx_tail_ptr(__priv, __args...) \
-	stmmac_do_void_callback(__priv, dma, set_rx_tail_ptr, __args)
+	stmmac_do_void_callback(__priv, dma, set_rx_tail_ptr, __priv, __args)
 #define stmmac_set_tx_tail_ptr(__priv, __args...) \
-	stmmac_do_void_callback(__priv, dma, set_tx_tail_ptr, __args)
+	stmmac_do_void_callback(__priv, dma, set_tx_tail_ptr, __priv, __args)
 #define stmmac_enable_tso(__priv, __args...) \
-	stmmac_do_void_callback(__priv, dma, enable_tso, __args)
+	stmmac_do_void_callback(__priv, dma, enable_tso, __priv, __args)
 #define stmmac_dma_qmode(__priv, __args...) \
-	stmmac_do_void_callback(__priv, dma, qmode, __args)
+	stmmac_do_void_callback(__priv, dma, qmode, __priv, __args)
 #define stmmac_set_dma_bfsize(__priv, __args...) \
-	stmmac_do_void_callback(__priv, dma, set_bfsize, __args)
+	stmmac_do_void_callback(__priv, dma, set_bfsize, __priv, __args)
 #define stmmac_enable_sph(__priv, __args...) \
-	stmmac_do_void_callback(__priv, dma, enable_sph, __args)
+	stmmac_do_void_callback(__priv, dma, enable_sph, __priv, __args)
 #define stmmac_enable_tbs(__priv, __args...) \
-	stmmac_do_callback(__priv, dma, enable_tbs, __args)
+	stmmac_do_callback(__priv, dma, enable_tbs, __priv, __args)
 
 struct mac_device_info;
 struct net_device;
@@ -307,21 +324,23 @@ struct stmmac_ops {
 	/* Program TX Algorithms */
 	void (*prog_mtl_tx_algorithms)(struct mac_device_info *hw, u32 tx_alg);
 	/* Set MTL TX queues weight */
-	void (*set_mtl_tx_queue_weight)(struct mac_device_info *hw,
+	void (*set_mtl_tx_queue_weight)(struct stmmac_priv *priv,
+					struct mac_device_info *hw,
 					u32 weight, u32 queue);
 	/* RX MTL queue to RX dma mapping */
 	void (*map_mtl_to_dma)(struct mac_device_info *hw, u32 queue, u32 chan);
 	/* Configure AV Algorithm */
-	void (*config_cbs)(struct mac_device_info *hw, u32 send_slope,
-			   u32 idle_slope, u32 high_credit, u32 low_credit,
-			   u32 queue);
+	void (*config_cbs)(struct stmmac_priv *priv, struct mac_device_info *hw,
+			   u32 send_slope, u32 idle_slope, u32 high_credit,
+			   u32 low_credit, u32 queue);
 	/* Dump MAC registers */
 	void (*dump_regs)(struct mac_device_info *hw, u32 *reg_space);
 	/* Handle extra events on specific interrupts hw dependent */
 	int (*host_irq_status)(struct mac_device_info *hw,
 			       struct stmmac_extra_stats *x);
 	/* Handle MTL interrupts */
-	int (*host_mtl_irq_status)(struct mac_device_info *hw, u32 chan);
+	int (*host_mtl_irq_status)(struct stmmac_priv *priv,
+				   struct mac_device_info *hw, u32 chan);
 	/* Multicast filter setting */
 	void (*set_filter)(struct mac_device_info *hw, struct net_device *dev);
 	/* Flow control setting */
@@ -341,8 +360,9 @@ struct stmmac_ops {
 	void (*set_eee_lpi_entry_timer)(struct mac_device_info *hw, int et);
 	void (*set_eee_timer)(struct mac_device_info *hw, int ls, int tw);
 	void (*set_eee_pls)(struct mac_device_info *hw, int link);
-	void (*debug)(void __iomem *ioaddr, struct stmmac_extra_stats *x,
-		      u32 rx_queues, u32 tx_queues);
+	void (*debug)(struct stmmac_priv *priv, void __iomem *ioaddr,
+		      struct stmmac_extra_stats *x, u32 rx_queues,
+		      u32 tx_queues);
 	/* PCS calls */
 	void (*pcs_ctrl_ane)(void __iomem *ioaddr, bool ane, bool srgmi_ral,
 			     bool loopback);
@@ -422,17 +442,17 @@ struct stmmac_ops {
 #define stmmac_prog_mtl_tx_algorithms(__priv, __args...) \
 	stmmac_do_void_callback(__priv, mac, prog_mtl_tx_algorithms, __args)
 #define stmmac_set_mtl_tx_queue_weight(__priv, __args...) \
-	stmmac_do_void_callback(__priv, mac, set_mtl_tx_queue_weight, __args)
+	stmmac_do_void_callback(__priv, mac, set_mtl_tx_queue_weight, __priv, __args)
 #define stmmac_map_mtl_to_dma(__priv, __args...) \
 	stmmac_do_void_callback(__priv, mac, map_mtl_to_dma, __args)
 #define stmmac_config_cbs(__priv, __args...) \
-	stmmac_do_void_callback(__priv, mac, config_cbs, __args)
+	stmmac_do_void_callback(__priv, mac, config_cbs, __priv, __args)
 #define stmmac_dump_mac_regs(__priv, __args...) \
 	stmmac_do_void_callback(__priv, mac, dump_regs, __args)
 #define stmmac_host_irq_status(__priv, __args...) \
 	stmmac_do_callback(__priv, mac, host_irq_status, __args)
 #define stmmac_host_mtl_irq_status(__priv, __args...) \
-	stmmac_do_callback(__priv, mac, host_mtl_irq_status, __args)
+	stmmac_do_callback(__priv, mac, host_mtl_irq_status, __priv, __args)
 #define stmmac_set_filter(__priv, __args...) \
 	stmmac_do_void_callback(__priv, mac, set_filter, __args)
 #define stmmac_flow_ctrl(__priv, __args...) \
@@ -454,11 +474,11 @@ struct stmmac_ops {
 #define stmmac_set_eee_pls(__priv, __args...) \
 	stmmac_do_void_callback(__priv, mac, set_eee_pls, __args)
 #define stmmac_mac_debug(__priv, __args...) \
-	stmmac_do_void_callback(__priv, mac, debug, __args)
+	stmmac_do_void_callback(__priv, mac, debug, __priv, __args)
 #define stmmac_pcs_ctrl_ane(__priv, __args...) \
 	stmmac_do_void_callback(__priv, mac, pcs_ctrl_ane, __args)
 #define stmmac_pcs_rane(__priv, __args...) \
-	stmmac_do_void_callback(__priv, mac, pcs_rane, __args)
+	stmmac_do_void_callback(__priv, mac, pcs_rane, __priv, __args)
 #define stmmac_pcs_get_adv_lp(__priv, __args...) \
 	stmmac_do_void_callback(__priv, mac, pcs_get_adv_lp, __args)
 #define stmmac_safety_feat_config(__priv, __args...) \
@@ -506,8 +526,6 @@ struct stmmac_ops {
 #define stmmac_fpe_irq_status(__priv, __args...) \
 	stmmac_do_callback(__priv, mac, fpe_irq_status, __args)
 
-struct stmmac_priv;
-
 /* PTP and HW Timer helpers */
 struct stmmac_hwtimestamp {
 	void (*config_hw_tstamping) (void __iomem *ioaddr, u32 data);
-- 
2.39.2

[PATCH net-next v3 09/12] net: stmmac: dwmac4: Allow platforms to specify some DMA/MTL offsets

[Andrew Halaney]

Some platforms have dwmac4 implementations that have a different
address space layout than the default, resulting in the need to define
their own DMA/MTL offsets.

Extend the functions to allow a platform driver to indicate what its
addresses are, overriding the defaults.

Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
---

This patch (and the prior patch) are replacements for
https://lore.kernel.org/netdev/20230320204153.21736840@kernel.org/
as was requested. Hopefully I was understanding the intent correctly :)

I'm pretty sure further refinement will be requested for this one, but
it is the best I could come up with myself! Specifically some of the
naming, dealing with spacing in some older spots of dwmac4,
where the addresses should live in the structure hierarchy, etc are
things I would not be surprised to have to rework if this is still
preferred over the wrapper approach.

Changes since v2:
    * New, replacing old wrapper approach

 drivers/net/ethernet/stmicro/stmmac/dwmac4.h  |  91 ++++++++--
 .../net/ethernet/stmicro/stmmac/dwmac4_core.c |  36 ++--
 .../net/ethernet/stmicro/stmmac/dwmac4_dma.c  | 157 ++++++++++--------
 .../net/ethernet/stmicro/stmmac/dwmac4_dma.h  |  51 +++---
 .../net/ethernet/stmicro/stmmac/dwmac4_lib.c  |  67 +++++---
 include/linux/stmmac.h                        |  19 +++
 6 files changed, 279 insertions(+), 142 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
index ccd49346d3b3..a0c0ee1dc13f 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
@@ -336,14 +336,23 @@ enum power_event {
 
 #define MTL_CHAN_BASE_ADDR		0x00000d00
 #define MTL_CHAN_BASE_OFFSET		0x40
-#define MTL_CHANX_BASE_ADDR(x)		(MTL_CHAN_BASE_ADDR + \
-					(x * MTL_CHAN_BASE_OFFSET))
-
-#define MTL_CHAN_TX_OP_MODE(x)		MTL_CHANX_BASE_ADDR(x)
-#define MTL_CHAN_TX_DEBUG(x)		(MTL_CHANX_BASE_ADDR(x) + 0x8)
-#define MTL_CHAN_INT_CTRL(x)		(MTL_CHANX_BASE_ADDR(x) + 0x2c)
-#define MTL_CHAN_RX_OP_MODE(x)		(MTL_CHANX_BASE_ADDR(x) + 0x30)
-#define MTL_CHAN_RX_DEBUG(x)		(MTL_CHANX_BASE_ADDR(x) + 0x38)
+#define MTL_CHANX_BASE_ADDR(addrs, x)  \
+({ \
+	const struct dwmac4_addrs *__addrs = addrs; \
+	const u32 __x = x; \
+	u32 __addr; \
+	if (__addrs) \
+		__addr = __addrs->mtl_chan + (__x * __addrs->mtl_chan_offset); \
+	else \
+		__addr = MTL_CHAN_BASE_ADDR + (__x * MTL_CHAN_BASE_OFFSET); \
+	__addr; \
+})
+
+#define MTL_CHAN_TX_OP_MODE(addrs, x)	MTL_CHANX_BASE_ADDR(addrs, x)
+#define MTL_CHAN_TX_DEBUG(addrs, x)	(MTL_CHANX_BASE_ADDR(addrs, x) + 0x8)
+#define MTL_CHAN_INT_CTRL(addrs, x)	(MTL_CHANX_BASE_ADDR(addrs, x) + 0x2c)
+#define MTL_CHAN_RX_OP_MODE(addrs, x)	(MTL_CHANX_BASE_ADDR(addrs, x) + 0x30)
+#define MTL_CHAN_RX_DEBUG(addrs, x)	(MTL_CHANX_BASE_ADDR(addrs, x) + 0x38)
 
 #define MTL_OP_MODE_RSF			BIT(5)
 #define MTL_OP_MODE_TXQEN_MASK		GENMASK(3, 2)
@@ -388,8 +397,17 @@ enum power_event {
 /* MTL ETS Control register */
 #define MTL_ETS_CTRL_BASE_ADDR		0x00000d10
 #define MTL_ETS_CTRL_BASE_OFFSET	0x40
-#define MTL_ETSX_CTRL_BASE_ADDR(x)	(MTL_ETS_CTRL_BASE_ADDR + \
-					((x) * MTL_ETS_CTRL_BASE_OFFSET))
+#define MTL_ETSX_CTRL_BASE_ADDR(addrs, x)  \
+({ \
+	const struct dwmac4_addrs *__addrs = addrs; \
+	const u32 __x = x; \
+	u32 __addr; \
+	if (__addrs) \
+		__addr = __addrs->mtl_ets_ctrl + (__x * __addrs->mtl_ets_ctrl_offset); \
+	else \
+		__addr = MTL_ETS_CTRL_BASE_ADDR + (__x * MTL_ETS_CTRL_BASE_OFFSET); \
+	__addr; \
+})
 
 #define MTL_ETS_CTRL_CC			BIT(3)
 #define MTL_ETS_CTRL_AVALG		BIT(2)
@@ -397,31 +415,68 @@ enum power_event {
 /* MTL Queue Quantum Weight */
 #define MTL_TXQ_WEIGHT_BASE_ADDR	0x00000d18
 #define MTL_TXQ_WEIGHT_BASE_OFFSET	0x40
-#define MTL_TXQX_WEIGHT_BASE_ADDR(x)	(MTL_TXQ_WEIGHT_BASE_ADDR + \
-					((x) * MTL_TXQ_WEIGHT_BASE_OFFSET))
+#define MTL_TXQX_WEIGHT_BASE_ADDR(addrs, x)  \
+({ \
+	const struct dwmac4_addrs *__addrs = addrs; \
+	const u32 __x = x; \
+	u32 __addr; \
+	if (__addrs) \
+		__addr = __addrs->mtl_txq_weight + (__x * __addrs->mtl_txq_weight_offset); \
+	else \
+		__addr = MTL_TXQ_WEIGHT_BASE_ADDR + (__x * MTL_TXQ_WEIGHT_BASE_OFFSET); \
+	__addr; \
+})
+
 #define MTL_TXQ_WEIGHT_ISCQW_MASK	GENMASK(20, 0)
 
 /* MTL sendSlopeCredit register */
 #define MTL_SEND_SLP_CRED_BASE_ADDR	0x00000d1c
 #define MTL_SEND_SLP_CRED_OFFSET	0x40
-#define MTL_SEND_SLP_CREDX_BASE_ADDR(x)	(MTL_SEND_SLP_CRED_BASE_ADDR + \
-					((x) * MTL_SEND_SLP_CRED_OFFSET))
+#define MTL_SEND_SLP_CREDX_BASE_ADDR(addrs, x)  \
+({ \
+	const struct dwmac4_addrs *__addrs = addrs; \
+	const u32 __x = x; \
+	u32 __addr; \
+	if (__addrs) \
+		__addr = __addrs->mtl_send_slp_cred + (__x * __addrs->mtl_send_slp_cred_offset); \
+	else \
+		__addr = MTL_SEND_SLP_CRED_BASE_ADDR + (__x * MTL_SEND_SLP_CRED_OFFSET); \
+	__addr; \
+})
 
 #define MTL_SEND_SLP_CRED_SSC_MASK	GENMASK(13, 0)
 
 /* MTL hiCredit register */
 #define MTL_HIGH_CRED_BASE_ADDR		0x00000d20
 #define MTL_HIGH_CRED_OFFSET		0x40
-#define MTL_HIGH_CREDX_BASE_ADDR(x)	(MTL_HIGH_CRED_BASE_ADDR + \
-					((x) * MTL_HIGH_CRED_OFFSET))
+#define MTL_HIGH_CREDX_BASE_ADDR(addrs, x)  \
+({ \
+	const struct dwmac4_addrs *__addrs = addrs; \
+	const u32 __x = x; \
+	u32 __addr; \
+	if (__addrs) \
+		__addr = __addrs->mtl_high_cred + (__x * __addrs->mtl_high_cred_offset); \
+	else \
+		__addr = MTL_HIGH_CRED_BASE_ADDR + (__x * MTL_HIGH_CRED_OFFSET); \
+	__addr; \
+})
 
 #define MTL_HIGH_CRED_HC_MASK		GENMASK(28, 0)
 
 /* MTL loCredit register */
 #define MTL_LOW_CRED_BASE_ADDR		0x00000d24
 #define MTL_LOW_CRED_OFFSET		0x40
-#define MTL_LOW_CREDX_BASE_ADDR(x)	(MTL_LOW_CRED_BASE_ADDR + \
-					((x) * MTL_LOW_CRED_OFFSET))
+#define MTL_LOW_CREDX_BASE_ADDR(addrs, x)  \
+({ \
+	const struct dwmac4_addrs *__addrs = addrs; \
+	const u32 __x = x; \
+	u32 __addr; \
+	if (__addrs) \
+		__addr = __addrs->mtl_low_cred + (__x * __addrs->mtl_low_cred_offset); \
+	else \
+		__addr = MTL_LOW_CRED_BASE_ADDR + (__x * MTL_LOW_CRED_OFFSET); \
+	__addr; \
+})
 
 #define MTL_HIGH_CRED_LC_MASK		GENMASK(28, 0)
 
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
index f44180519638..4b5b302515c4 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
@@ -202,12 +202,14 @@ static void dwmac4_set_mtl_tx_queue_weight(struct stmmac_priv *priv,
 					   struct mac_device_info *hw,
 					   u32 weight, u32 queue)
 {
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
 	void __iomem *ioaddr = hw->pcsr;
-	u32 value = readl(ioaddr + MTL_TXQX_WEIGHT_BASE_ADDR(queue));
+	u32 value = readl(ioaddr + MTL_TXQX_WEIGHT_BASE_ADDR(dwmac4_addrs,
+							     queue));
 
 	value &= ~MTL_TXQ_WEIGHT_ISCQW_MASK;
 	value |= weight & MTL_TXQ_WEIGHT_ISCQW_MASK;
-	writel(value, ioaddr + MTL_TXQX_WEIGHT_BASE_ADDR(queue));
+	writel(value, ioaddr + MTL_TXQX_WEIGHT_BASE_ADDR(dwmac4_addrs, queue));
 }
 
 static void dwmac4_map_mtl_dma(struct mac_device_info *hw, u32 queue, u32 chan)
@@ -233,6 +235,7 @@ static void dwmac4_config_cbs(struct stmmac_priv *priv,
 			      u32 send_slope, u32 idle_slope,
 			      u32 high_credit, u32 low_credit, u32 queue)
 {
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
 	void __iomem *ioaddr = hw->pcsr;
 	u32 value;
 
@@ -243,31 +246,33 @@ static void dwmac4_config_cbs(struct stmmac_priv *priv,
 	pr_debug("\tlow_credit: 0x%08x\n", low_credit);
 
 	/* enable AV algorithm */
-	value = readl(ioaddr + MTL_ETSX_CTRL_BASE_ADDR(queue));
+	value = readl(ioaddr + MTL_ETSX_CTRL_BASE_ADDR(dwmac4_addrs, queue));
 	value |= MTL_ETS_CTRL_AVALG;
 	value |= MTL_ETS_CTRL_CC;
-	writel(value, ioaddr + MTL_ETSX_CTRL_BASE_ADDR(queue));
+	writel(value, ioaddr + MTL_ETSX_CTRL_BASE_ADDR(dwmac4_addrs, queue));
 
 	/* configure send slope */
-	value = readl(ioaddr + MTL_SEND_SLP_CREDX_BASE_ADDR(queue));
+	value = readl(ioaddr + MTL_SEND_SLP_CREDX_BASE_ADDR(dwmac4_addrs,
+							    queue));
 	value &= ~MTL_SEND_SLP_CRED_SSC_MASK;
 	value |= send_slope & MTL_SEND_SLP_CRED_SSC_MASK;
-	writel(value, ioaddr + MTL_SEND_SLP_CREDX_BASE_ADDR(queue));
+	writel(value, ioaddr + MTL_SEND_SLP_CREDX_BASE_ADDR(dwmac4_addrs,
+							    queue));
 
 	/* configure idle slope (same register as tx weight) */
 	dwmac4_set_mtl_tx_queue_weight(priv, hw, idle_slope, queue);
 
 	/* configure high credit */
-	value = readl(ioaddr + MTL_HIGH_CREDX_BASE_ADDR(queue));
+	value = readl(ioaddr + MTL_HIGH_CREDX_BASE_ADDR(dwmac4_addrs, queue));
 	value &= ~MTL_HIGH_CRED_HC_MASK;
 	value |= high_credit & MTL_HIGH_CRED_HC_MASK;
-	writel(value, ioaddr + MTL_HIGH_CREDX_BASE_ADDR(queue));
+	writel(value, ioaddr + MTL_HIGH_CREDX_BASE_ADDR(dwmac4_addrs, queue));
 
 	/* configure high credit */
-	value = readl(ioaddr + MTL_LOW_CREDX_BASE_ADDR(queue));
+	value = readl(ioaddr + MTL_LOW_CREDX_BASE_ADDR(dwmac4_addrs, queue));
 	value &= ~MTL_HIGH_CRED_LC_MASK;
 	value |= low_credit & MTL_HIGH_CRED_LC_MASK;
-	writel(value, ioaddr + MTL_LOW_CREDX_BASE_ADDR(queue));
+	writel(value, ioaddr + MTL_LOW_CREDX_BASE_ADDR(dwmac4_addrs, queue));
 }
 
 static void dwmac4_dump_regs(struct mac_device_info *hw, u32 *reg_space)
@@ -764,6 +769,7 @@ static void dwmac4_phystatus(void __iomem *ioaddr, struct stmmac_extra_stats *x)
 static int dwmac4_irq_mtl_status(struct stmmac_priv *priv,
 				 struct mac_device_info *hw, u32 chan)
 {
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
 	void __iomem *ioaddr = hw->pcsr;
 	u32 mtl_int_qx_status;
 	int ret = 0;
@@ -773,12 +779,13 @@ static int dwmac4_irq_mtl_status(struct stmmac_priv *priv,
 	/* Check MTL Interrupt */
 	if (mtl_int_qx_status & MTL_INT_QX(chan)) {
 		/* read Queue x Interrupt status */
-		u32 status = readl(ioaddr + MTL_CHAN_INT_CTRL(chan));
+		u32 status = readl(ioaddr + MTL_CHAN_INT_CTRL(dwmac4_addrs,
+							      chan));
 
 		if (status & MTL_RX_OVERFLOW_INT) {
 			/*  clear Interrupt */
 			writel(status | MTL_RX_OVERFLOW_INT,
-			       ioaddr + MTL_CHAN_INT_CTRL(chan));
+			       ioaddr + MTL_CHAN_INT_CTRL(dwmac4_addrs, chan));
 			ret = CORE_IRQ_MTL_RX_OVERFLOW;
 		}
 	}
@@ -840,11 +847,12 @@ static void dwmac4_debug(struct stmmac_priv *priv, void __iomem *ioaddr,
 			 struct stmmac_extra_stats *x,
 			 u32 rx_queues, u32 tx_queues)
 {
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
 	u32 value;
 	u32 queue;
 
 	for (queue = 0; queue < tx_queues; queue++) {
-		value = readl(ioaddr + MTL_CHAN_TX_DEBUG(queue));
+		value = readl(ioaddr + MTL_CHAN_TX_DEBUG(dwmac4_addrs, queue));
 
 		if (value & MTL_DEBUG_TXSTSFSTS)
 			x->mtl_tx_status_fifo_full++;
@@ -869,7 +877,7 @@ static void dwmac4_debug(struct stmmac_priv *priv, void __iomem *ioaddr,
 	}
 
 	for (queue = 0; queue < rx_queues; queue++) {
-		value = readl(ioaddr + MTL_CHAN_RX_DEBUG(queue));
+		value = readl(ioaddr + MTL_CHAN_RX_DEBUG(dwmac4_addrs, queue));
 
 		if (value & MTL_DEBUG_RXFSTS_MASK) {
 			u32 rxfsts = (value & MTL_DEBUG_RXFSTS_MASK)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
index 6f255d12f60f..84d3a8551b03 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
@@ -13,6 +13,7 @@
 #include <linux/io.h>
 #include "dwmac4.h"
 #include "dwmac4_dma.h"
+#include "stmmac.h"
 
 static void dwmac4_dma_axi(void __iomem *ioaddr, struct stmmac_axi *axi)
 {
@@ -73,18 +74,20 @@ static void dwmac4_dma_init_rx_chan(struct stmmac_priv *priv,
 				    struct stmmac_dma_cfg *dma_cfg,
 				    dma_addr_t dma_rx_phy, u32 chan)
 {
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
 	u32 value;
 	u32 rxpbl = dma_cfg->rxpbl ?: dma_cfg->pbl;
 
-	value = readl(ioaddr + DMA_CHAN_RX_CONTROL(chan));
+	value = readl(ioaddr + DMA_CHAN_RX_CONTROL(dwmac4_addrs, chan));
 	value = value | (rxpbl << DMA_BUS_MODE_RPBL_SHIFT);
-	writel(value, ioaddr + DMA_CHAN_RX_CONTROL(chan));
+	writel(value, ioaddr + DMA_CHAN_RX_CONTROL(dwmac4_addrs, chan));
 
 	if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT) && likely(dma_cfg->eame))
 		writel(upper_32_bits(dma_rx_phy),
-		       ioaddr + DMA_CHAN_RX_BASE_ADDR_HI(chan));
+		       ioaddr + DMA_CHAN_RX_BASE_ADDR_HI(dwmac4_addrs, chan));
 
-	writel(lower_32_bits(dma_rx_phy), ioaddr + DMA_CHAN_RX_BASE_ADDR(chan));
+	writel(lower_32_bits(dma_rx_phy),
+	       ioaddr + DMA_CHAN_RX_BASE_ADDR(dwmac4_addrs, chan));
 }
 
 static void dwmac4_dma_init_tx_chan(struct stmmac_priv *priv,
@@ -92,57 +95,61 @@ static void dwmac4_dma_init_tx_chan(struct stmmac_priv *priv,
 				    struct stmmac_dma_cfg *dma_cfg,
 				    dma_addr_t dma_tx_phy, u32 chan)
 {
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
 	u32 value;
 	u32 txpbl = dma_cfg->txpbl ?: dma_cfg->pbl;
 
-	value = readl(ioaddr + DMA_CHAN_TX_CONTROL(chan));
+	value = readl(ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan));
 	value = value | (txpbl << DMA_BUS_MODE_PBL_SHIFT);
 
 	/* Enable OSP to get best performance */
 	value |= DMA_CONTROL_OSP;
 
-	writel(value, ioaddr + DMA_CHAN_TX_CONTROL(chan));
+	writel(value, ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan));
 
 	if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT) && likely(dma_cfg->eame))
 		writel(upper_32_bits(dma_tx_phy),
-		       ioaddr + DMA_CHAN_TX_BASE_ADDR_HI(chan));
+		       ioaddr + DMA_CHAN_TX_BASE_ADDR_HI(dwmac4_addrs, chan));
 
-	writel(lower_32_bits(dma_tx_phy), ioaddr + DMA_CHAN_TX_BASE_ADDR(chan));
+	writel(lower_32_bits(dma_tx_phy),
+	       ioaddr + DMA_CHAN_TX_BASE_ADDR(dwmac4_addrs, chan));
 }
 
 static void dwmac4_dma_init_channel(struct stmmac_priv *priv,
 				    void __iomem *ioaddr,
 				    struct stmmac_dma_cfg *dma_cfg, u32 chan)
 {
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
 	u32 value;
 
 	/* common channel control register config */
-	value = readl(ioaddr + DMA_CHAN_CONTROL(chan));
+	value = readl(ioaddr + DMA_CHAN_CONTROL(dwmac4_addrs, chan));
 	if (dma_cfg->pblx8)
 		value = value | DMA_BUS_MODE_PBL;
-	writel(value, ioaddr + DMA_CHAN_CONTROL(chan));
+	writel(value, ioaddr + DMA_CHAN_CONTROL(dwmac4_addrs, chan));
 
 	/* Mask interrupts by writing to CSR7 */
 	writel(DMA_CHAN_INTR_DEFAULT_MASK,
-	       ioaddr + DMA_CHAN_INTR_ENA(chan));
+	       ioaddr + DMA_CHAN_INTR_ENA(dwmac4_addrs, chan));
 }
 
 static void dwmac410_dma_init_channel(struct stmmac_priv *priv,
 				      void __iomem *ioaddr,
 				      struct stmmac_dma_cfg *dma_cfg, u32 chan)
 {
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
 	u32 value;
 
 	/* common channel control register config */
-	value = readl(ioaddr + DMA_CHAN_CONTROL(chan));
+	value = readl(ioaddr + DMA_CHAN_CONTROL(dwmac4_addrs, chan));
 	if (dma_cfg->pblx8)
 		value = value | DMA_BUS_MODE_PBL;
 
-	writel(value, ioaddr + DMA_CHAN_CONTROL(chan));
+	writel(value, ioaddr + DMA_CHAN_CONTROL(dwmac4_addrs, chan));
 
 	/* Mask interrupts by writing to CSR7 */
 	writel(DMA_CHAN_INTR_DEFAULT_MASK_4_10,
-	       ioaddr + DMA_CHAN_INTR_ENA(chan));
+	       ioaddr + DMA_CHAN_INTR_ENA(dwmac4_addrs, chan));
 }
 
 static void dwmac4_dma_init(void __iomem *ioaddr,
@@ -184,40 +191,46 @@ static void _dwmac4_dump_dma_regs(struct stmmac_priv *priv,
 				  void __iomem *ioaddr, u32 channel,
 				  u32 *reg_space)
 {
-	reg_space[DMA_CHAN_CONTROL(channel) / 4] =
-		readl(ioaddr + DMA_CHAN_CONTROL(channel));
-	reg_space[DMA_CHAN_TX_CONTROL(channel) / 4] =
-		readl(ioaddr + DMA_CHAN_TX_CONTROL(channel));
-	reg_space[DMA_CHAN_RX_CONTROL(channel) / 4] =
-		readl(ioaddr + DMA_CHAN_RX_CONTROL(channel));
-	reg_space[DMA_CHAN_TX_BASE_ADDR(channel) / 4] =
-		readl(ioaddr + DMA_CHAN_TX_BASE_ADDR(channel));
-	reg_space[DMA_CHAN_RX_BASE_ADDR(channel) / 4] =
-		readl(ioaddr + DMA_CHAN_RX_BASE_ADDR(channel));
-	reg_space[DMA_CHAN_TX_END_ADDR(channel) / 4] =
-		readl(ioaddr + DMA_CHAN_TX_END_ADDR(channel));
-	reg_space[DMA_CHAN_RX_END_ADDR(channel) / 4] =
-		readl(ioaddr + DMA_CHAN_RX_END_ADDR(channel));
-	reg_space[DMA_CHAN_TX_RING_LEN(channel) / 4] =
-		readl(ioaddr + DMA_CHAN_TX_RING_LEN(channel));
-	reg_space[DMA_CHAN_RX_RING_LEN(channel) / 4] =
-		readl(ioaddr + DMA_CHAN_RX_RING_LEN(channel));
-	reg_space[DMA_CHAN_INTR_ENA(channel) / 4] =
-		readl(ioaddr + DMA_CHAN_INTR_ENA(channel));
-	reg_space[DMA_CHAN_RX_WATCHDOG(channel) / 4] =
-		readl(ioaddr + DMA_CHAN_RX_WATCHDOG(channel));
-	reg_space[DMA_CHAN_SLOT_CTRL_STATUS(channel) / 4] =
-		readl(ioaddr + DMA_CHAN_SLOT_CTRL_STATUS(channel));
-	reg_space[DMA_CHAN_CUR_TX_DESC(channel) / 4] =
-		readl(ioaddr + DMA_CHAN_CUR_TX_DESC(channel));
-	reg_space[DMA_CHAN_CUR_RX_DESC(channel) / 4] =
-		readl(ioaddr + DMA_CHAN_CUR_RX_DESC(channel));
-	reg_space[DMA_CHAN_CUR_TX_BUF_ADDR(channel) / 4] =
-		readl(ioaddr + DMA_CHAN_CUR_TX_BUF_ADDR(channel));
-	reg_space[DMA_CHAN_CUR_RX_BUF_ADDR(channel) / 4] =
-		readl(ioaddr + DMA_CHAN_CUR_RX_BUF_ADDR(channel));
-	reg_space[DMA_CHAN_STATUS(channel) / 4] =
-		readl(ioaddr + DMA_CHAN_STATUS(channel));
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
+	const struct dwmac4_addrs *default_addrs = NULL;
+
+	/* Purposely save the registers in the "normal" layout, regardless of
+	 * platform modifications, to keep reg_space size constant
+	 */
+	reg_space[DMA_CHAN_CONTROL(default_addrs, channel) / 4] =
+		readl(ioaddr + DMA_CHAN_CONTROL(dwmac4_addrs, channel));
+	reg_space[DMA_CHAN_TX_CONTROL(default_addrs, channel) / 4] =
+		readl(ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, channel));
+	reg_space[DMA_CHAN_RX_CONTROL(default_addrs, channel) / 4] =
+		readl(ioaddr + DMA_CHAN_RX_CONTROL(dwmac4_addrs, channel));
+	reg_space[DMA_CHAN_TX_BASE_ADDR(default_addrs, channel) / 4] =
+		readl(ioaddr + DMA_CHAN_TX_BASE_ADDR(dwmac4_addrs, channel));
+	reg_space[DMA_CHAN_RX_BASE_ADDR(default_addrs, channel) / 4] =
+		readl(ioaddr + DMA_CHAN_RX_BASE_ADDR(dwmac4_addrs, channel));
+	reg_space[DMA_CHAN_TX_END_ADDR(default_addrs, channel) / 4] =
+		readl(ioaddr + DMA_CHAN_TX_END_ADDR(dwmac4_addrs, channel));
+	reg_space[DMA_CHAN_RX_END_ADDR(default_addrs, channel) / 4] =
+		readl(ioaddr + DMA_CHAN_RX_END_ADDR(dwmac4_addrs, channel));
+	reg_space[DMA_CHAN_TX_RING_LEN(default_addrs, channel) / 4] =
+		readl(ioaddr + DMA_CHAN_TX_RING_LEN(dwmac4_addrs, channel));
+	reg_space[DMA_CHAN_RX_RING_LEN(default_addrs, channel) / 4] =
+		readl(ioaddr + DMA_CHAN_RX_RING_LEN(dwmac4_addrs, channel));
+	reg_space[DMA_CHAN_INTR_ENA(default_addrs, channel) / 4] =
+		readl(ioaddr + DMA_CHAN_INTR_ENA(dwmac4_addrs, channel));
+	reg_space[DMA_CHAN_RX_WATCHDOG(default_addrs, channel) / 4] =
+		readl(ioaddr + DMA_CHAN_RX_WATCHDOG(dwmac4_addrs, channel));
+	reg_space[DMA_CHAN_SLOT_CTRL_STATUS(default_addrs, channel) / 4] =
+		readl(ioaddr + DMA_CHAN_SLOT_CTRL_STATUS(dwmac4_addrs, channel));
+	reg_space[DMA_CHAN_CUR_TX_DESC(default_addrs, channel) / 4] =
+		readl(ioaddr + DMA_CHAN_CUR_TX_DESC(dwmac4_addrs, channel));
+	reg_space[DMA_CHAN_CUR_RX_DESC(default_addrs, channel) / 4] =
+		readl(ioaddr + DMA_CHAN_CUR_RX_DESC(dwmac4_addrs, channel));
+	reg_space[DMA_CHAN_CUR_TX_BUF_ADDR(default_addrs, channel) / 4] =
+		readl(ioaddr + DMA_CHAN_CUR_TX_BUF_ADDR(dwmac4_addrs, channel));
+	reg_space[DMA_CHAN_CUR_RX_BUF_ADDR(default_addrs, channel) / 4] =
+		readl(ioaddr + DMA_CHAN_CUR_RX_BUF_ADDR(dwmac4_addrs, channel));
+	reg_space[DMA_CHAN_STATUS(default_addrs, channel) / 4] =
+		readl(ioaddr + DMA_CHAN_STATUS(dwmac4_addrs, channel));
 }
 
 static void dwmac4_dump_dma_regs(struct stmmac_priv *priv, void __iomem *ioaddr,
@@ -232,17 +245,20 @@ static void dwmac4_dump_dma_regs(struct stmmac_priv *priv, void __iomem *ioaddr,
 static void dwmac4_rx_watchdog(struct stmmac_priv *priv, void __iomem *ioaddr,
 			       u32 riwt, u32 queue)
 {
-	writel(riwt, ioaddr + DMA_CHAN_RX_WATCHDOG(queue));
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
+
+	writel(riwt, ioaddr + DMA_CHAN_RX_WATCHDOG(dwmac4_addrs, queue));
 }
 
 static void dwmac4_dma_rx_chan_op_mode(struct stmmac_priv *priv,
 				       void __iomem *ioaddr, int mode,
 				       u32 channel, int fifosz, u8 qmode)
 {
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
 	unsigned int rqs = fifosz / 256 - 1;
 	u32 mtl_rx_op;
 
-	mtl_rx_op = readl(ioaddr + MTL_CHAN_RX_OP_MODE(channel));
+	mtl_rx_op = readl(ioaddr + MTL_CHAN_RX_OP_MODE(dwmac4_addrs, channel));
 
 	if (mode == SF_DMA_MODE) {
 		pr_debug("GMAC: enable RX store and forward mode\n");
@@ -300,14 +316,16 @@ static void dwmac4_dma_rx_chan_op_mode(struct stmmac_priv *priv,
 		mtl_rx_op |= rfa << MTL_OP_MODE_RFA_SHIFT;
 	}
 
-	writel(mtl_rx_op, ioaddr + MTL_CHAN_RX_OP_MODE(channel));
+	writel(mtl_rx_op, ioaddr + MTL_CHAN_RX_OP_MODE(dwmac4_addrs, channel));
 }
 
 static void dwmac4_dma_tx_chan_op_mode(struct stmmac_priv *priv,
 				       void __iomem *ioaddr, int mode,
 				       u32 channel, int fifosz, u8 qmode)
 {
-	u32 mtl_tx_op = readl(ioaddr + MTL_CHAN_TX_OP_MODE(channel));
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
+	u32 mtl_tx_op = readl(ioaddr + MTL_CHAN_TX_OP_MODE(dwmac4_addrs,
+							   channel));
 	unsigned int tqs = fifosz / 256 - 1;
 
 	if (mode == SF_DMA_MODE) {
@@ -353,7 +371,7 @@ static void dwmac4_dma_tx_chan_op_mode(struct stmmac_priv *priv,
 	mtl_tx_op &= ~MTL_OP_MODE_TQS_MASK;
 	mtl_tx_op |= tqs << MTL_OP_MODE_TQS_SHIFT;
 
-	writel(mtl_tx_op, ioaddr +  MTL_CHAN_TX_OP_MODE(channel));
+	writel(mtl_tx_op, ioaddr +  MTL_CHAN_TX_OP_MODE(dwmac4_addrs, channel));
 }
 
 static int dwmac4_get_hw_feature(void __iomem *ioaddr,
@@ -454,25 +472,28 @@ static int dwmac4_get_hw_feature(void __iomem *ioaddr,
 static void dwmac4_enable_tso(struct stmmac_priv *priv, void __iomem *ioaddr,
 			      bool en, u32 chan)
 {
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
 	u32 value;
 
 	if (en) {
 		/* enable TSO */
-		value = readl(ioaddr + DMA_CHAN_TX_CONTROL(chan));
+		value = readl(ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan));
 		writel(value | DMA_CONTROL_TSE,
-		       ioaddr + DMA_CHAN_TX_CONTROL(chan));
+		       ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan));
 	} else {
 		/* enable TSO */
-		value = readl(ioaddr + DMA_CHAN_TX_CONTROL(chan));
+		value = readl(ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan));
 		writel(value & ~DMA_CONTROL_TSE,
-		       ioaddr + DMA_CHAN_TX_CONTROL(chan));
+		       ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan));
 	}
 }
 
 static void dwmac4_qmode(struct stmmac_priv *priv, void __iomem *ioaddr,
 			 u32 channel, u8 qmode)
 {
-	u32 mtl_tx_op = readl(ioaddr + MTL_CHAN_TX_OP_MODE(channel));
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
+	u32 mtl_tx_op = readl(ioaddr + MTL_CHAN_TX_OP_MODE(dwmac4_addrs,
+							   channel));
 
 	mtl_tx_op &= ~MTL_OP_MODE_TXQEN_MASK;
 	if (qmode != MTL_QUEUE_AVB)
@@ -480,50 +501,54 @@ static void dwmac4_qmode(struct stmmac_priv *priv, void __iomem *ioaddr,
 	else
 		mtl_tx_op |= MTL_OP_MODE_TXQEN_AV;
 
-	writel(mtl_tx_op, ioaddr +  MTL_CHAN_TX_OP_MODE(channel));
+	writel(mtl_tx_op, ioaddr +  MTL_CHAN_TX_OP_MODE(dwmac4_addrs, channel));
 }
 
 static void dwmac4_set_bfsize(struct stmmac_priv *priv, void __iomem *ioaddr,
 			      int bfsize, u32 chan)
 {
-	u32 value = readl(ioaddr + DMA_CHAN_RX_CONTROL(chan));
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
+	u32 value = readl(ioaddr + DMA_CHAN_RX_CONTROL(dwmac4_addrs, chan));
 
 	value &= ~DMA_RBSZ_MASK;
 	value |= (bfsize << DMA_RBSZ_SHIFT) & DMA_RBSZ_MASK;
 
-	writel(value, ioaddr + DMA_CHAN_RX_CONTROL(chan));
+	writel(value, ioaddr + DMA_CHAN_RX_CONTROL(dwmac4_addrs, chan));
 }
 
 static void dwmac4_enable_sph(struct stmmac_priv *priv, void __iomem *ioaddr,
 			      bool en, u32 chan)
 {
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
 	u32 value = readl(ioaddr + GMAC_EXT_CONFIG);
 
 	value &= ~GMAC_CONFIG_HDSMS;
 	value |= GMAC_CONFIG_HDSMS_256; /* Segment max 256 bytes */
 	writel(value, ioaddr + GMAC_EXT_CONFIG);
 
-	value = readl(ioaddr + DMA_CHAN_CONTROL(chan));
+	value = readl(ioaddr + DMA_CHAN_CONTROL(dwmac4_addrs, chan));
 	if (en)
 		value |= DMA_CONTROL_SPH;
 	else
 		value &= ~DMA_CONTROL_SPH;
-	writel(value, ioaddr + DMA_CHAN_CONTROL(chan));
+	writel(value, ioaddr + DMA_CHAN_CONTROL(dwmac4_addrs, chan));
 }
 
 static int dwmac4_enable_tbs(struct stmmac_priv *priv, void __iomem *ioaddr,
 			     bool en, u32 chan)
 {
-	u32 value = readl(ioaddr + DMA_CHAN_TX_CONTROL(chan));
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
+	u32 value = readl(ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan));
 
 	if (en)
 		value |= DMA_CONTROL_EDSE;
 	else
 		value &= ~DMA_CONTROL_EDSE;
 
-	writel(value, ioaddr + DMA_CHAN_TX_CONTROL(chan));
+	writel(value, ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan));
 
-	value = readl(ioaddr + DMA_CHAN_TX_CONTROL(chan)) & DMA_CONTROL_EDSE;
+	value = readl(ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs,
+						   chan)) & DMA_CONTROL_EDSE;
 	if (en && !value)
 		return -EIO;
 
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h
index 740c3bc8d9a0..85efac83f0ca 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h
@@ -95,29 +95,38 @@
 /* Following DMA defines are chanels oriented */
 #define DMA_CHAN_BASE_ADDR		0x00001100
 #define DMA_CHAN_BASE_OFFSET		0x80
-#define DMA_CHANX_BASE_ADDR(x)		(DMA_CHAN_BASE_ADDR + \
-					(x * DMA_CHAN_BASE_OFFSET))
+#define DMA_CHANX_BASE_ADDR(addrs, x)  \
+({ \
+	const struct dwmac4_addrs *__addrs = addrs; \
+	const u32 __x = x; \
+	u32 __addr; \
+	if (__addrs) \
+		__addr = __addrs->dma_chan + (__x * __addrs->dma_chan_offset); \
+	else \
+		__addr = DMA_CHAN_BASE_ADDR + (__x * DMA_CHAN_BASE_OFFSET); \
+	__addr; \
+})
 #define DMA_CHAN_REG_NUMBER		17
 
-#define DMA_CHAN_CONTROL(x)		DMA_CHANX_BASE_ADDR(x)
-#define DMA_CHAN_TX_CONTROL(x)		(DMA_CHANX_BASE_ADDR(x) + 0x4)
-#define DMA_CHAN_RX_CONTROL(x)		(DMA_CHANX_BASE_ADDR(x) + 0x8)
-#define DMA_CHAN_TX_BASE_ADDR_HI(x)	(DMA_CHANX_BASE_ADDR(x) + 0x10)
-#define DMA_CHAN_TX_BASE_ADDR(x)	(DMA_CHANX_BASE_ADDR(x) + 0x14)
-#define DMA_CHAN_RX_BASE_ADDR_HI(x)	(DMA_CHANX_BASE_ADDR(x) + 0x18)
-#define DMA_CHAN_RX_BASE_ADDR(x)	(DMA_CHANX_BASE_ADDR(x) + 0x1c)
-#define DMA_CHAN_TX_END_ADDR(x)		(DMA_CHANX_BASE_ADDR(x) + 0x20)
-#define DMA_CHAN_RX_END_ADDR(x)		(DMA_CHANX_BASE_ADDR(x) + 0x28)
-#define DMA_CHAN_TX_RING_LEN(x)		(DMA_CHANX_BASE_ADDR(x) + 0x2c)
-#define DMA_CHAN_RX_RING_LEN(x)		(DMA_CHANX_BASE_ADDR(x) + 0x30)
-#define DMA_CHAN_INTR_ENA(x)		(DMA_CHANX_BASE_ADDR(x) + 0x34)
-#define DMA_CHAN_RX_WATCHDOG(x)		(DMA_CHANX_BASE_ADDR(x) + 0x38)
-#define DMA_CHAN_SLOT_CTRL_STATUS(x)	(DMA_CHANX_BASE_ADDR(x) + 0x3c)
-#define DMA_CHAN_CUR_TX_DESC(x)		(DMA_CHANX_BASE_ADDR(x) + 0x44)
-#define DMA_CHAN_CUR_RX_DESC(x)		(DMA_CHANX_BASE_ADDR(x) + 0x4c)
-#define DMA_CHAN_CUR_TX_BUF_ADDR(x)	(DMA_CHANX_BASE_ADDR(x) + 0x54)
-#define DMA_CHAN_CUR_RX_BUF_ADDR(x)	(DMA_CHANX_BASE_ADDR(x) + 0x5c)
-#define DMA_CHAN_STATUS(x)		(DMA_CHANX_BASE_ADDR(x) + 0x60)
+#define DMA_CHAN_CONTROL(addrs, x)	DMA_CHANX_BASE_ADDR(addrs, x)
+#define DMA_CHAN_TX_CONTROL(addrs, x)	(DMA_CHANX_BASE_ADDR(addrs, x) + 0x4)
+#define DMA_CHAN_RX_CONTROL(addrs, x)	(DMA_CHANX_BASE_ADDR(addrs, x) + 0x8)
+#define DMA_CHAN_TX_BASE_ADDR_HI(addrs, x)	(DMA_CHANX_BASE_ADDR(addrs, x) + 0x10)
+#define DMA_CHAN_TX_BASE_ADDR(addrs, x)	(DMA_CHANX_BASE_ADDR(addrs, x) + 0x14)
+#define DMA_CHAN_RX_BASE_ADDR_HI(addrs, x)	(DMA_CHANX_BASE_ADDR(addrs, x) + 0x18)
+#define DMA_CHAN_RX_BASE_ADDR(addrs, x)	(DMA_CHANX_BASE_ADDR(addrs, x) + 0x1c)
+#define DMA_CHAN_TX_END_ADDR(addrs, x)	(DMA_CHANX_BASE_ADDR(addrs, x) + 0x20)
+#define DMA_CHAN_RX_END_ADDR(addrs, x)	(DMA_CHANX_BASE_ADDR(addrs, x) + 0x28)
+#define DMA_CHAN_TX_RING_LEN(addrs, x)	(DMA_CHANX_BASE_ADDR(addrs, x) + 0x2c)
+#define DMA_CHAN_RX_RING_LEN(addrs, x)	(DMA_CHANX_BASE_ADDR(addrs, x) + 0x30)
+#define DMA_CHAN_INTR_ENA(addrs, x)	(DMA_CHANX_BASE_ADDR(addrs, x) + 0x34)
+#define DMA_CHAN_RX_WATCHDOG(addrs, x)	(DMA_CHANX_BASE_ADDR(addrs, x) + 0x38)
+#define DMA_CHAN_SLOT_CTRL_STATUS(addrs, x)	(DMA_CHANX_BASE_ADDR(addrs, x) + 0x3c)
+#define DMA_CHAN_CUR_TX_DESC(addrs, x)	(DMA_CHANX_BASE_ADDR(addrs, x) + 0x44)
+#define DMA_CHAN_CUR_RX_DESC(addrs, x)	(DMA_CHANX_BASE_ADDR(addrs, x) + 0x4c)
+#define DMA_CHAN_CUR_TX_BUF_ADDR(addrs, x)	(DMA_CHANX_BASE_ADDR(addrs, x) + 0x54)
+#define DMA_CHAN_CUR_RX_BUF_ADDR(addrs, x)	(DMA_CHANX_BASE_ADDR(addrs, x) + 0x5c)
+#define DMA_CHAN_STATUS(addrs, x)	(DMA_CHANX_BASE_ADDR(addrs, x) + 0x60)
 
 /* DMA Control X */
 #define DMA_CONTROL_SPH			BIT(24)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c
index 5e9c495aa03e..df41eac54058 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c
@@ -11,6 +11,7 @@
 #include "common.h"
 #include "dwmac4_dma.h"
 #include "dwmac4.h"
+#include "stmmac.h"
 
 int dwmac4_dma_reset(void __iomem *ioaddr)
 {
@@ -28,22 +29,27 @@ int dwmac4_dma_reset(void __iomem *ioaddr)
 void dwmac4_set_rx_tail_ptr(struct stmmac_priv *priv, void __iomem *ioaddr,
 			    u32 tail_ptr, u32 chan)
 {
-	writel(tail_ptr, ioaddr + DMA_CHAN_RX_END_ADDR(chan));
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
+
+	writel(tail_ptr, ioaddr + DMA_CHAN_RX_END_ADDR(dwmac4_addrs, chan));
 }
 
 void dwmac4_set_tx_tail_ptr(struct stmmac_priv *priv, void __iomem *ioaddr,
 			    u32 tail_ptr, u32 chan)
 {
-	writel(tail_ptr, ioaddr + DMA_CHAN_TX_END_ADDR(chan));
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
+
+	writel(tail_ptr, ioaddr + DMA_CHAN_TX_END_ADDR(dwmac4_addrs, chan));
 }
 
 void dwmac4_dma_start_tx(struct stmmac_priv *priv, void __iomem *ioaddr,
 			 u32 chan)
 {
-	u32 value = readl(ioaddr + DMA_CHAN_TX_CONTROL(chan));
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
+	u32 value = readl(ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan));
 
 	value |= DMA_CONTROL_ST;
-	writel(value, ioaddr + DMA_CHAN_TX_CONTROL(chan));
+	writel(value, ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan));
 
 	value = readl(ioaddr + GMAC_CONFIG);
 	value |= GMAC_CONFIG_TE;
@@ -53,20 +59,24 @@ void dwmac4_dma_start_tx(struct stmmac_priv *priv, void __iomem *ioaddr,
 void dwmac4_dma_stop_tx(struct stmmac_priv *priv, void __iomem *ioaddr,
 			u32 chan)
 {
-	u32 value = readl(ioaddr + DMA_CHAN_TX_CONTROL(chan));
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
+
+	u32 value = readl(ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan));
 
 	value &= ~DMA_CONTROL_ST;
-	writel(value, ioaddr + DMA_CHAN_TX_CONTROL(chan));
+	writel(value, ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan));
 }
 
 void dwmac4_dma_start_rx(struct stmmac_priv *priv, void __iomem *ioaddr,
 			 u32 chan)
 {
-	u32 value = readl(ioaddr + DMA_CHAN_RX_CONTROL(chan));
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
+
+	u32 value = readl(ioaddr + DMA_CHAN_RX_CONTROL(dwmac4_addrs, chan));
 
 	value |= DMA_CONTROL_SR;
 
-	writel(value, ioaddr + DMA_CHAN_RX_CONTROL(chan));
+	writel(value, ioaddr + DMA_CHAN_RX_CONTROL(dwmac4_addrs, chan));
 
 	value = readl(ioaddr + GMAC_CONFIG);
 	value |= GMAC_CONFIG_RE;
@@ -76,81 +86,91 @@ void dwmac4_dma_start_rx(struct stmmac_priv *priv, void __iomem *ioaddr,
 void dwmac4_dma_stop_rx(struct stmmac_priv *priv, void __iomem *ioaddr,
 			u32 chan)
 {
-	u32 value = readl(ioaddr + DMA_CHAN_RX_CONTROL(chan));
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
+	u32 value = readl(ioaddr + DMA_CHAN_RX_CONTROL(dwmac4_addrs, chan));
 
 	value &= ~DMA_CONTROL_SR;
-	writel(value, ioaddr + DMA_CHAN_RX_CONTROL(chan));
+	writel(value, ioaddr + DMA_CHAN_RX_CONTROL(dwmac4_addrs, chan));
 }
 
 void dwmac4_set_tx_ring_len(struct stmmac_priv *priv, void __iomem *ioaddr,
 			    u32 len, u32 chan)
 {
-	writel(len, ioaddr + DMA_CHAN_TX_RING_LEN(chan));
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
+
+	writel(len, ioaddr + DMA_CHAN_TX_RING_LEN(dwmac4_addrs, chan));
 }
 
 void dwmac4_set_rx_ring_len(struct stmmac_priv *priv, void __iomem *ioaddr,
 			    u32 len, u32 chan)
 {
-	writel(len, ioaddr + DMA_CHAN_RX_RING_LEN(chan));
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
+
+	writel(len, ioaddr + DMA_CHAN_RX_RING_LEN(dwmac4_addrs, chan));
 }
 
 void dwmac4_enable_dma_irq(struct stmmac_priv *priv, void __iomem *ioaddr,
 			   u32 chan, bool rx, bool tx)
 {
-	u32 value = readl(ioaddr + DMA_CHAN_INTR_ENA(chan));
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
+	u32 value = readl(ioaddr + DMA_CHAN_INTR_ENA(dwmac4_addrs, chan));
 
 	if (rx)
 		value |= DMA_CHAN_INTR_DEFAULT_RX;
 	if (tx)
 		value |= DMA_CHAN_INTR_DEFAULT_TX;
 
-	writel(value, ioaddr + DMA_CHAN_INTR_ENA(chan));
+	writel(value, ioaddr + DMA_CHAN_INTR_ENA(dwmac4_addrs, chan));
 }
 
 void dwmac410_enable_dma_irq(struct stmmac_priv *priv, void __iomem *ioaddr,
 			     u32 chan, bool rx, bool tx)
 {
-	u32 value = readl(ioaddr + DMA_CHAN_INTR_ENA(chan));
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
+	u32 value = readl(ioaddr + DMA_CHAN_INTR_ENA(dwmac4_addrs, chan));
 
 	if (rx)
 		value |= DMA_CHAN_INTR_DEFAULT_RX_4_10;
 	if (tx)
 		value |= DMA_CHAN_INTR_DEFAULT_TX_4_10;
 
-	writel(value, ioaddr + DMA_CHAN_INTR_ENA(chan));
+	writel(value, ioaddr + DMA_CHAN_INTR_ENA(dwmac4_addrs, chan));
 }
 
 void dwmac4_disable_dma_irq(struct stmmac_priv *priv, void __iomem *ioaddr,
 			    u32 chan, bool rx, bool tx)
 {
-	u32 value = readl(ioaddr + DMA_CHAN_INTR_ENA(chan));
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
+	u32 value = readl(ioaddr + DMA_CHAN_INTR_ENA(dwmac4_addrs, chan));
 
 	if (rx)
 		value &= ~DMA_CHAN_INTR_DEFAULT_RX;
 	if (tx)
 		value &= ~DMA_CHAN_INTR_DEFAULT_TX;
 
-	writel(value, ioaddr + DMA_CHAN_INTR_ENA(chan));
+	writel(value, ioaddr + DMA_CHAN_INTR_ENA(dwmac4_addrs, chan));
 }
 
 void dwmac410_disable_dma_irq(struct stmmac_priv *priv, void __iomem *ioaddr,
 			      u32 chan, bool rx, bool tx)
 {
-	u32 value = readl(ioaddr + DMA_CHAN_INTR_ENA(chan));
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
+	u32 value = readl(ioaddr + DMA_CHAN_INTR_ENA(dwmac4_addrs, chan));
 
 	if (rx)
 		value &= ~DMA_CHAN_INTR_DEFAULT_RX_4_10;
 	if (tx)
 		value &= ~DMA_CHAN_INTR_DEFAULT_TX_4_10;
 
-	writel(value, ioaddr + DMA_CHAN_INTR_ENA(chan));
+	writel(value, ioaddr + DMA_CHAN_INTR_ENA(dwmac4_addrs, chan));
 }
 
 int dwmac4_dma_interrupt(struct stmmac_priv *priv, void __iomem *ioaddr,
 			 struct stmmac_extra_stats *x, u32 chan, u32 dir)
 {
-	u32 intr_status = readl(ioaddr + DMA_CHAN_STATUS(chan));
-	u32 intr_en = readl(ioaddr + DMA_CHAN_INTR_ENA(chan));
+	const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
+	u32 intr_status = readl(ioaddr + DMA_CHAN_STATUS(dwmac4_addrs, chan));
+	u32 intr_en = readl(ioaddr + DMA_CHAN_INTR_ENA(dwmac4_addrs, chan));
 	int ret = 0;
 
 	if (dir == DMA_DIR_RX)
@@ -195,7 +215,8 @@ int dwmac4_dma_interrupt(struct stmmac_priv *priv, void __iomem *ioaddr,
 	if (unlikely(intr_status & DMA_CHAN_STATUS_ERI))
 		x->rx_early_irq++;
 
-	writel(intr_status & intr_en, ioaddr + DMA_CHAN_STATUS(chan));
+	writel(intr_status & intr_en,
+	       ioaddr + DMA_CHAN_STATUS(dwmac4_addrs, chan));
 	return ret;
 }
 
diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h
index a2414c187483..32cfa5d415f9 100644
--- a/include/linux/stmmac.h
+++ b/include/linux/stmmac.h
@@ -186,6 +186,24 @@ struct stmmac_safety_feature_cfg {
 	u32 tmouten;
 };
 
+/* Addresses that may be customized by a platform */
+struct dwmac4_addrs {
+	u32 dma_chan;
+	u32 dma_chan_offset;
+	u32 mtl_chan;
+	u32 mtl_chan_offset;
+	u32 mtl_ets_ctrl;
+	u32 mtl_ets_ctrl_offset;
+	u32 mtl_txq_weight;
+	u32 mtl_txq_weight_offset;
+	u32 mtl_send_slp_cred;
+	u32 mtl_send_slp_cred_offset;
+	u32 mtl_high_cred;
+	u32 mtl_high_cred_offset;
+	u32 mtl_low_cred;
+	u32 mtl_low_cred_offset;
+};
+
 struct plat_stmmacenet_data {
 	int bus_id;
 	int phy_addr;
@@ -273,5 +291,6 @@ struct plat_stmmacenet_data {
 	bool use_phy_wol;
 	bool sph_disable;
 	bool serdes_up_after_phy_linkup;
+	const struct dwmac4_addrs *dwmac4_addrs;
 };
 #endif
-- 
2.39.2

[PATCH net-next v3 10/12] net: stmmac: dwmac-qcom-ethqos: Respect phy-mode and TX delay

[Andrew Halaney]

The driver currently sets a MAC TX delay of 2 ns no matter what the
phy-mode is. If the phy-mode indicates the phy is in charge of the
TX delay (rgmii-txid, rgmii-id), don't do it in the MAC.

Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
---

Changes since v2:
    * Fix spacing, reverse xmas tree (Jakub)

Changes since v1:
    * Use a consistent subject prefix with other stmmac changes in series (myself)

 .../stmicro/stmmac/dwmac-qcom-ethqos.c        | 20 ++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
index 32763566c214..abec6dd27992 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
@@ -279,6 +279,17 @@ static int ethqos_dll_configure(struct qcom_ethqos *ethqos)
 
 static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
 {
+	int phase_shift;
+	int phy_mode;
+
+	/* Determine if the PHY adds a 2 ns TX delay or the MAC handles it */
+	phy_mode = device_get_phy_mode(&ethqos->pdev->dev);
+	if (phy_mode == PHY_INTERFACE_MODE_RGMII_ID ||
+	    phy_mode == PHY_INTERFACE_MODE_RGMII_TXID)
+		phase_shift = 0;
+	else
+		phase_shift = RGMII_CONFIG2_TX_CLK_PHASE_SHIFT_EN;
+
 	/* Disable loopback mode */
 	rgmii_updatel(ethqos, RGMII_CONFIG2_TX_TO_RX_LOOPBACK_EN,
 		      0, RGMII_IO_MACRO_CONFIG2);
@@ -300,9 +311,9 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
 			      RGMII_CONFIG_PROG_SWAP, RGMII_IO_MACRO_CONFIG);
 		rgmii_updatel(ethqos, RGMII_CONFIG2_DATA_DIVIDE_CLK_SEL,
 			      0, RGMII_IO_MACRO_CONFIG2);
+
 		rgmii_updatel(ethqos, RGMII_CONFIG2_TX_CLK_PHASE_SHIFT_EN,
-			      RGMII_CONFIG2_TX_CLK_PHASE_SHIFT_EN,
-			      RGMII_IO_MACRO_CONFIG2);
+			      phase_shift, RGMII_IO_MACRO_CONFIG2);
 		rgmii_updatel(ethqos, RGMII_CONFIG2_RSVD_CONFIG15,
 			      0, RGMII_IO_MACRO_CONFIG2);
 		rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP,
@@ -336,8 +347,7 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
 		rgmii_updatel(ethqos, RGMII_CONFIG2_DATA_DIVIDE_CLK_SEL,
 			      0, RGMII_IO_MACRO_CONFIG2);
 		rgmii_updatel(ethqos, RGMII_CONFIG2_TX_CLK_PHASE_SHIFT_EN,
-			      RGMII_CONFIG2_TX_CLK_PHASE_SHIFT_EN,
-			      RGMII_IO_MACRO_CONFIG2);
+			      phase_shift, RGMII_IO_MACRO_CONFIG2);
 		rgmii_updatel(ethqos, RGMII_CONFIG_MAX_SPD_PRG_2,
 			      BIT(6), RGMII_IO_MACRO_CONFIG);
 		rgmii_updatel(ethqos, RGMII_CONFIG2_RSVD_CONFIG15,
@@ -375,7 +385,7 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
 		rgmii_updatel(ethqos, RGMII_CONFIG2_DATA_DIVIDE_CLK_SEL,
 			      0, RGMII_IO_MACRO_CONFIG2);
 		rgmii_updatel(ethqos, RGMII_CONFIG2_TX_CLK_PHASE_SHIFT_EN,
-			      0, RGMII_IO_MACRO_CONFIG2);
+			      phase_shift, RGMII_IO_MACRO_CONFIG2);
 		rgmii_updatel(ethqos, RGMII_CONFIG_MAX_SPD_PRG_9,
 			      BIT(12) | GENMASK(9, 8),
 			      RGMII_IO_MACRO_CONFIG);
-- 
2.39.2

[PATCH net-next v3 11/12] net: stmmac: dwmac-qcom-ethqos: Use loopback_en for all speeds

[Andrew Halaney]

It seems that this variable should be used for all speeds, not just
1000/100.

While at it refactor it slightly to be more readable, including fixing
the typo in the variable name.

Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
---

Changes since v2:
    * None
Changes since v1:
    * Use a consistent subject prefix with other stmmac changes in series (myself)

 .../stmicro/stmmac/dwmac-qcom-ethqos.c        | 36 +++++++++----------
 1 file changed, 17 insertions(+), 19 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
index abec6dd27992..ec9e93147716 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
@@ -78,7 +78,7 @@ struct ethqos_emac_por {
 struct ethqos_emac_driver_data {
 	const struct ethqos_emac_por *por;
 	unsigned int num_por;
-	bool rgmii_config_looback_en;
+	bool rgmii_config_loopback_en;
 };
 
 struct qcom_ethqos {
@@ -91,7 +91,7 @@ struct qcom_ethqos {
 
 	const struct ethqos_emac_por *por;
 	unsigned int num_por;
-	bool rgmii_config_looback_en;
+	bool rgmii_config_loopback_en;
 };
 
 static int rgmii_readl(struct qcom_ethqos *ethqos, unsigned int offset)
@@ -183,7 +183,7 @@ static const struct ethqos_emac_por emac_v2_3_0_por[] = {
 static const struct ethqos_emac_driver_data emac_v2_3_0_data = {
 	.por = emac_v2_3_0_por,
 	.num_por = ARRAY_SIZE(emac_v2_3_0_por),
-	.rgmii_config_looback_en = true,
+	.rgmii_config_loopback_en = true,
 };
 
 static const struct ethqos_emac_por emac_v2_1_0_por[] = {
@@ -198,7 +198,7 @@ static const struct ethqos_emac_por emac_v2_1_0_por[] = {
 static const struct ethqos_emac_driver_data emac_v2_1_0_data = {
 	.por = emac_v2_1_0_por,
 	.num_por = ARRAY_SIZE(emac_v2_1_0_por),
-	.rgmii_config_looback_en = false,
+	.rgmii_config_loopback_en = false,
 };
 
 static int ethqos_dll_configure(struct qcom_ethqos *ethqos)
@@ -281,6 +281,7 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
 {
 	int phase_shift;
 	int phy_mode;
+	int loopback;
 
 	/* Determine if the PHY adds a 2 ns TX delay or the MAC handles it */
 	phy_mode = device_get_phy_mode(&ethqos->pdev->dev);
@@ -294,6 +295,12 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
 	rgmii_updatel(ethqos, RGMII_CONFIG2_TX_TO_RX_LOOPBACK_EN,
 		      0, RGMII_IO_MACRO_CONFIG2);
 
+	/* Determine if this platform wants loopback enabled after programming */
+	if (ethqos->rgmii_config_loopback_en)
+		loopback = RGMII_CONFIG_LOOPBACK_EN;
+	else
+		loopback = 0;
+
 	/* Select RGMII, write 0 to interface select */
 	rgmii_updatel(ethqos, RGMII_CONFIG_INTF_SEL,
 		      0, RGMII_IO_MACRO_CONFIG);
@@ -326,12 +333,8 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
 		rgmii_updatel(ethqos, SDCC_DDR_CONFIG_PRG_DLY_EN,
 			      SDCC_DDR_CONFIG_PRG_DLY_EN,
 			      SDCC_HC_REG_DDR_CONFIG);
-		if (ethqos->rgmii_config_looback_en)
-			rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN,
-				      RGMII_CONFIG_LOOPBACK_EN, RGMII_IO_MACRO_CONFIG);
-		else
-			rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN,
-				      0, RGMII_IO_MACRO_CONFIG);
+		rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN,
+			      loopback, RGMII_IO_MACRO_CONFIG);
 		break;
 
 	case SPEED_100:
@@ -363,13 +366,8 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
 		rgmii_updatel(ethqos, SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_EN,
 			      SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_EN,
 			      SDCC_HC_REG_DDR_CONFIG);
-		if (ethqos->rgmii_config_looback_en)
-			rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN,
-				      RGMII_CONFIG_LOOPBACK_EN, RGMII_IO_MACRO_CONFIG);
-		else
-			rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN,
-				      0, RGMII_IO_MACRO_CONFIG);
-
+		rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN,
+			      loopback, RGMII_IO_MACRO_CONFIG);
 		break;
 
 	case SPEED_10:
@@ -403,7 +401,7 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
 			      SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_EN,
 			      SDCC_HC_REG_DDR_CONFIG);
 		rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN,
-			      RGMII_CONFIG_LOOPBACK_EN, RGMII_IO_MACRO_CONFIG);
+			      loopback, RGMII_IO_MACRO_CONFIG);
 		break;
 	default:
 		dev_err(&ethqos->pdev->dev,
@@ -548,7 +546,7 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
 	data = of_device_get_match_data(&pdev->dev);
 	ethqos->por = data->por;
 	ethqos->num_por = data->num_por;
-	ethqos->rgmii_config_looback_en = data->rgmii_config_looback_en;
+	ethqos->rgmii_config_loopback_en = data->rgmii_config_loopback_en;
 
 	ethqos->rgmii_clk = devm_clk_get(&pdev->dev, "rgmii");
 	if (IS_ERR(ethqos->rgmii_clk)) {
-- 
2.39.2

Re: [PATCH net-next v3 00/12] Add EMAC3 support for sa8540p-ride

[Andrew Halaney]

On Fri, Mar 31, 2023 at 04:45:37PM -0500, Andrew Halaney wrote:
> This is a forward port / upstream refactor of code delivered
> downstream by Qualcomm over at [0] to enable the DWMAC5 based
> implementation called EMAC3 on the sa8540p-ride dev board.
> 
> From what I can tell with the board schematic in hand,
> as well as the code delivered, the main changes needed are:
> 
>     1. A new address space layout for /dwmac5/EMAC3 MTL/DMA regs
>     2. A new programming sequence required for the EMAC3 base platforms
> 
> This series makes the change for 1 above as well as other housekeeping items
> such as converting dt-bindings to yaml, etc.
> 
> As requested[1], it has been split up by compile time / maintainer tree.
> I will post a link to the associated devicetree changes that together
> with this series get the hardware functioning.

As promised: https://lore.kernel.org/netdev/20230331215804.783439-1-ahalaney@redhat.com/T/#t

Thanks in advance for any reviews!
- Andrew

Re: [PATCH net-next v3 00/12] Add EMAC3 support for sa8540p-ride

[Jakub Kicinski]

On Fri, 31 Mar 2023 17:06:13 -0500 Andrew Halaney wrote:
> As promised: https://lore.kernel.org/netdev/20230331215804.783439-1-ahalaney@redhat.com/T/#t

Patch 12 never made it to netdev or lore :(

Re: [PATCH net-next v3 07/12] net: stmmac: Remove some unnecessary void pointers

[Simon Horman]

On Fri, Mar 31, 2023 at 04:45:44PM -0500, Andrew Halaney wrote:
> There's a few spots in the hardware interface where a void pointer is
> used, but what's passed in and later cast out is always the same type.
> 
> Just use the proper type directly.
> 
> Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
> ---
> 
> Changes since v2:
>     * New patch. In later patches refactoring hwif.h I touched these in
>       their first form (which was later dropped) and changed this as
>       part of that. But I thought the change was still good overall,
>       so I left this improvement in the series.

FWIIW, I am very pleased to see this kind of change.

Reviewed-by: Simon Horman <simon.horman@corigine.com>

Re: [PATCH net-next v3 09/12] net: stmmac: dwmac4: Allow platforms to specify some DMA/MTL offsets

[Simon Horman]

On Fri, Mar 31, 2023 at 04:45:46PM -0500, Andrew Halaney wrote:
> Some platforms have dwmac4 implementations that have a different
> address space layout than the default, resulting in the need to define
> their own DMA/MTL offsets.
> 
> Extend the functions to allow a platform driver to indicate what its
> addresses are, overriding the defaults.
> 
> Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
> ---
> 
> This patch (and the prior patch) are replacements for
> https://lore.kernel.org/netdev/20230320204153.21736840@kernel.org/
> as was requested. Hopefully I was understanding the intent correctly :)
> 
> I'm pretty sure further refinement will be requested for this one, but
> it is the best I could come up with myself! Specifically some of the
> naming, dealing with spacing in some older spots of dwmac4,
> where the addresses should live in the structure hierarchy, etc are
> things I would not be surprised to have to rework if this is still
> preferred over the wrapper approach.
> 
> Changes since v2:
>     * New, replacing old wrapper approach
> 
>  drivers/net/ethernet/stmicro/stmmac/dwmac4.h  |  91 ++++++++--
>  .../net/ethernet/stmicro/stmmac/dwmac4_core.c |  36 ++--
>  .../net/ethernet/stmicro/stmmac/dwmac4_dma.c  | 157 ++++++++++--------
>  .../net/ethernet/stmicro/stmmac/dwmac4_dma.h  |  51 +++---
>  .../net/ethernet/stmicro/stmmac/dwmac4_lib.c  |  67 +++++---
>  include/linux/stmmac.h                        |  19 +++
>  6 files changed, 279 insertions(+), 142 deletions(-)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
> index ccd49346d3b3..a0c0ee1dc13f 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
> @@ -336,14 +336,23 @@ enum power_event {
>  
>  #define MTL_CHAN_BASE_ADDR		0x00000d00
>  #define MTL_CHAN_BASE_OFFSET		0x40
> -#define MTL_CHANX_BASE_ADDR(x)		(MTL_CHAN_BASE_ADDR + \
> -					(x * MTL_CHAN_BASE_OFFSET))
> -
> -#define MTL_CHAN_TX_OP_MODE(x)		MTL_CHANX_BASE_ADDR(x)
> -#define MTL_CHAN_TX_DEBUG(x)		(MTL_CHANX_BASE_ADDR(x) + 0x8)
> -#define MTL_CHAN_INT_CTRL(x)		(MTL_CHANX_BASE_ADDR(x) + 0x2c)
> -#define MTL_CHAN_RX_OP_MODE(x)		(MTL_CHANX_BASE_ADDR(x) + 0x30)
> -#define MTL_CHAN_RX_DEBUG(x)		(MTL_CHANX_BASE_ADDR(x) + 0x38)
> +#define MTL_CHANX_BASE_ADDR(addrs, x)  \
> +({ \
> +	const struct dwmac4_addrs *__addrs = addrs; \
> +	const u32 __x = x; \
> +	u32 __addr; \
> +	if (__addrs) \
> +		__addr = __addrs->mtl_chan + (__x * __addrs->mtl_chan_offset); \
> +	else \
> +		__addr = MTL_CHAN_BASE_ADDR + (__x * MTL_CHAN_BASE_OFFSET); \
> +	__addr; \
> +})

Could this and similar macros added by this patch be functions?
From my pov a benefit would be slightly more type safety.
And as a bonus there wouldn't be any need to handle aliasing of input.

Re: [PATCH net-next v3 08/12] net: stmmac: Pass stmmac_priv in some callbacks

[Simon Horman]

On Fri, Mar 31, 2023 at 04:45:45PM -0500, Andrew Halaney wrote:
> Passing stmmac_priv to some of the callbacks allows hwif implementations
> to grab some data that platforms can customize. Adjust the callbacks
> accordingly in preparation of such a platform customization.
> 
> Signed-off-by: Andrew Halaney <ahalaney@redhat.com>

...

>  #define stmmac_reset(__priv, __args...) \
> @@ -223,59 +240,59 @@ struct stmmac_dma_ops {
>  #define stmmac_dma_init(__priv, __args...) \
>  	stmmac_do_void_callback(__priv, dma, init, __args)
>  #define stmmac_init_chan(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, dma, init_chan, __args)
> +	stmmac_do_void_callback(__priv, dma, init_chan, __priv, __args)

Hi Andrew,

Rather than maintaining these macros can we just get rid of them?
I'd be surprised if things aren't nicer with functions in their place [1].

f.e., we now have (__priv, ..., __priv, ...) due to a generalisation
      that seems to take a lot more than it gives.

[1] https://lore.kernel.org/linux-arm-kernel/ZBst1SzcIS4j+t46@corigine.com/

>  #define stmmac_init_rx_chan(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, dma, init_rx_chan, __args)
> +	stmmac_do_void_callback(__priv, dma, init_rx_chan, __priv, __args)
>  #define stmmac_init_tx_chan(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, dma, init_tx_chan, __args)
> +	stmmac_do_void_callback(__priv, dma, init_tx_chan, __priv, __args)
>  #define stmmac_axi(__priv, __args...) \
>  	stmmac_do_void_callback(__priv, dma, axi, __args)
>  #define stmmac_dump_dma_regs(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, dma, dump_regs, __args)
> +	stmmac_do_void_callback(__priv, dma, dump_regs, __priv, __args)
>  #define stmmac_dma_rx_mode(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, dma, dma_rx_mode, __args)
> +	stmmac_do_void_callback(__priv, dma, dma_rx_mode, __priv, __args)
>  #define stmmac_dma_tx_mode(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, dma, dma_tx_mode, __args)
> +	stmmac_do_void_callback(__priv, dma, dma_tx_mode, __priv, __args)
>  #define stmmac_dma_diagnostic_fr(__priv, __args...) \
>  	stmmac_do_void_callback(__priv, dma, dma_diagnostic_fr, __args)
>  #define stmmac_enable_dma_transmission(__priv, __args...) \
>  	stmmac_do_void_callback(__priv, dma, enable_dma_transmission, __args)
>  #define stmmac_enable_dma_irq(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, dma, enable_dma_irq, __args)
> +	stmmac_do_void_callback(__priv, dma, enable_dma_irq, __priv, __args)
>  #define stmmac_disable_dma_irq(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, dma, disable_dma_irq, __args)
> +	stmmac_do_void_callback(__priv, dma, disable_dma_irq, __priv, __args)
>  #define stmmac_start_tx(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, dma, start_tx, __args)
> +	stmmac_do_void_callback(__priv, dma, start_tx, __priv, __args)
>  #define stmmac_stop_tx(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, dma, stop_tx, __args)
> +	stmmac_do_void_callback(__priv, dma, stop_tx, __priv, __args)
>  #define stmmac_start_rx(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, dma, start_rx, __args)
> +	stmmac_do_void_callback(__priv, dma, start_rx, __priv, __args)
>  #define stmmac_stop_rx(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, dma, stop_rx, __args)
> +	stmmac_do_void_callback(__priv, dma, stop_rx, __priv, __args)
>  #define stmmac_dma_interrupt_status(__priv, __args...) \
> -	stmmac_do_callback(__priv, dma, dma_interrupt, __args)
> +	stmmac_do_callback(__priv, dma, dma_interrupt, __priv, __args)
>  #define stmmac_get_hw_feature(__priv, __args...) \
>  	stmmac_do_callback(__priv, dma, get_hw_feature, __args)
>  #define stmmac_rx_watchdog(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, dma, rx_watchdog, __args)
> +	stmmac_do_void_callback(__priv, dma, rx_watchdog, __priv, __args)
>  #define stmmac_set_tx_ring_len(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, dma, set_tx_ring_len, __args)
> +	stmmac_do_void_callback(__priv, dma, set_tx_ring_len, __priv, __args)
>  #define stmmac_set_rx_ring_len(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, dma, set_rx_ring_len, __args)
> +	stmmac_do_void_callback(__priv, dma, set_rx_ring_len, __priv, __args)
>  #define stmmac_set_rx_tail_ptr(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, dma, set_rx_tail_ptr, __args)
> +	stmmac_do_void_callback(__priv, dma, set_rx_tail_ptr, __priv, __args)
>  #define stmmac_set_tx_tail_ptr(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, dma, set_tx_tail_ptr, __args)
> +	stmmac_do_void_callback(__priv, dma, set_tx_tail_ptr, __priv, __args)
>  #define stmmac_enable_tso(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, dma, enable_tso, __args)
> +	stmmac_do_void_callback(__priv, dma, enable_tso, __priv, __args)
>  #define stmmac_dma_qmode(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, dma, qmode, __args)
> +	stmmac_do_void_callback(__priv, dma, qmode, __priv, __args)
>  #define stmmac_set_dma_bfsize(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, dma, set_bfsize, __args)
> +	stmmac_do_void_callback(__priv, dma, set_bfsize, __priv, __args)
>  #define stmmac_enable_sph(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, dma, enable_sph, __args)
> +	stmmac_do_void_callback(__priv, dma, enable_sph, __priv, __args)
>  #define stmmac_enable_tbs(__priv, __args...) \
> -	stmmac_do_callback(__priv, dma, enable_tbs, __args)
> +	stmmac_do_callback(__priv, dma, enable_tbs, __priv, __args)
>  
>  struct mac_device_info;
>  struct net_device;
> @@ -307,21 +324,23 @@ struct stmmac_ops {
>  	/* Program TX Algorithms */
>  	void (*prog_mtl_tx_algorithms)(struct mac_device_info *hw, u32 tx_alg);
>  	/* Set MTL TX queues weight */
> -	void (*set_mtl_tx_queue_weight)(struct mac_device_info *hw,
> +	void (*set_mtl_tx_queue_weight)(struct stmmac_priv *priv,
> +					struct mac_device_info *hw,
>  					u32 weight, u32 queue);
>  	/* RX MTL queue to RX dma mapping */
>  	void (*map_mtl_to_dma)(struct mac_device_info *hw, u32 queue, u32 chan);
>  	/* Configure AV Algorithm */
> -	void (*config_cbs)(struct mac_device_info *hw, u32 send_slope,
> -			   u32 idle_slope, u32 high_credit, u32 low_credit,
> -			   u32 queue);
> +	void (*config_cbs)(struct stmmac_priv *priv, struct mac_device_info *hw,
> +			   u32 send_slope, u32 idle_slope, u32 high_credit,
> +			   u32 low_credit, u32 queue);
>  	/* Dump MAC registers */
>  	void (*dump_regs)(struct mac_device_info *hw, u32 *reg_space);
>  	/* Handle extra events on specific interrupts hw dependent */
>  	int (*host_irq_status)(struct mac_device_info *hw,
>  			       struct stmmac_extra_stats *x);
>  	/* Handle MTL interrupts */
> -	int (*host_mtl_irq_status)(struct mac_device_info *hw, u32 chan);
> +	int (*host_mtl_irq_status)(struct stmmac_priv *priv,
> +				   struct mac_device_info *hw, u32 chan);
>  	/* Multicast filter setting */
>  	void (*set_filter)(struct mac_device_info *hw, struct net_device *dev);
>  	/* Flow control setting */
> @@ -341,8 +360,9 @@ struct stmmac_ops {
>  	void (*set_eee_lpi_entry_timer)(struct mac_device_info *hw, int et);
>  	void (*set_eee_timer)(struct mac_device_info *hw, int ls, int tw);
>  	void (*set_eee_pls)(struct mac_device_info *hw, int link);
> -	void (*debug)(void __iomem *ioaddr, struct stmmac_extra_stats *x,
> -		      u32 rx_queues, u32 tx_queues);
> +	void (*debug)(struct stmmac_priv *priv, void __iomem *ioaddr,
> +		      struct stmmac_extra_stats *x, u32 rx_queues,
> +		      u32 tx_queues);
>  	/* PCS calls */
>  	void (*pcs_ctrl_ane)(void __iomem *ioaddr, bool ane, bool srgmi_ral,
>  			     bool loopback);

...

> @@ -422,17 +442,17 @@ struct stmmac_ops {
>  #define stmmac_prog_mtl_tx_algorithms(__priv, __args...) \
>  	stmmac_do_void_callback(__priv, mac, prog_mtl_tx_algorithms, __args)
>  #define stmmac_set_mtl_tx_queue_weight(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, mac, set_mtl_tx_queue_weight, __args)
> +	stmmac_do_void_callback(__priv, mac, set_mtl_tx_queue_weight, __priv, __args)
>  #define stmmac_map_mtl_to_dma(__priv, __args...) \
>  	stmmac_do_void_callback(__priv, mac, map_mtl_to_dma, __args)
>  #define stmmac_config_cbs(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, mac, config_cbs, __args)
> +	stmmac_do_void_callback(__priv, mac, config_cbs, __priv, __args)
>  #define stmmac_dump_mac_regs(__priv, __args...) \
>  	stmmac_do_void_callback(__priv, mac, dump_regs, __args)
>  #define stmmac_host_irq_status(__priv, __args...) \
>  	stmmac_do_callback(__priv, mac, host_irq_status, __args)
>  #define stmmac_host_mtl_irq_status(__priv, __args...) \
> -	stmmac_do_callback(__priv, mac, host_mtl_irq_status, __args)
> +	stmmac_do_callback(__priv, mac, host_mtl_irq_status, __priv, __args)
>  #define stmmac_set_filter(__priv, __args...) \
>  	stmmac_do_void_callback(__priv, mac, set_filter, __args)
>  #define stmmac_flow_ctrl(__priv, __args...) \
> @@ -454,11 +474,11 @@ struct stmmac_ops {
>  #define stmmac_set_eee_pls(__priv, __args...) \
>  	stmmac_do_void_callback(__priv, mac, set_eee_pls, __args)
>  #define stmmac_mac_debug(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, mac, debug, __args)
> +	stmmac_do_void_callback(__priv, mac, debug, __priv, __args)
>  #define stmmac_pcs_ctrl_ane(__priv, __args...) \
>  	stmmac_do_void_callback(__priv, mac, pcs_ctrl_ane, __args)
>  #define stmmac_pcs_rane(__priv, __args...) \
> -	stmmac_do_void_callback(__priv, mac, pcs_rane, __args)
> +	stmmac_do_void_callback(__priv, mac, pcs_rane, __priv, __args)
>  #define stmmac_pcs_get_adv_lp(__priv, __args...) \
>  	stmmac_do_void_callback(__priv, mac, pcs_get_adv_lp, __args)
>  #define stmmac_safety_feat_config(__priv, __args...) \
> @@ -506,8 +526,6 @@ struct stmmac_ops {
>  #define stmmac_fpe_irq_status(__priv, __args...) \
>  	stmmac_do_callback(__priv, mac, fpe_irq_status, __args)

Re: [PATCH net-next v3 04/12] dt-bindings: net: qcom,ethqos: Add Qualcomm sc8280xp compatibles

[Krzysztof Kozlowski]

On 31/03/2023 23:45, Andrew Halaney wrote:
> The sc8280xp has a new version of the ETHQOS hardware in it, EMAC v3.
> Add a compatible for this.
> 
> Signed-off-by: Andrew Halaney <ahalaney@redhat.com>


Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof

Re: [PATCH net-next v3 00/12] Add EMAC3 support for sa8540p-ride

[Andrew Halaney]

On Fri, Mar 31, 2023 at 09:55:04PM -0700, Jakub Kicinski wrote:
> On Fri, 31 Mar 2023 17:06:13 -0500 Andrew Halaney wrote:
> > As promised: https://lore.kernel.org/netdev/20230331215804.783439-1-ahalaney@redhat.com/T/#t
> 
> Patch 12 never made it to netdev or lore :(
> 

Well, that's no good as I definitely want some eyes on that one :(

I've already gotten _some_ reviews on the earlier patches in v3,
I am going to absorb anything super quick into a v4 today, then send that out,
maybe copy pasting larger questions I have yet to respond to? Seems like
an ok approach.. not having the full solution in hand is crummy for
review. Let me know if you think that's a bad call and just a resend is
better.

Sorry, not sure where I messed that up Friday evening when writing
changelogs etc.

[PATCH net-next v3 12/12] net: stmmac: dwmac-qcom-ethqos: Add EMAC3 support

[Andrew Halaney]

Add the new programming sequence needed for EMAC3 based platforms such
as the sc8280xp family.

Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
---

This originally did not make it to the list somehow, but was intended
to. Apologies in advance if appending it like this is inappropriate, but
after thinking about it more I think that works better than doing a
RESEND (and making current comments difficult to track) or spinning a
v4, without addressing comments in this version entirely. I'm eager to
get some feedback on this, and I've got some property damage at home
to deal with so I'm sending it this way instead of waiting for further
advice on how to deal with me dropping it on accident.

I know the Qualcomm team has looked at earlier versions of this offlist,
but I'd appreciate any feedback I can get (good or bad) for this patch
since it is a lot of programming that I took entirely from downstream
after modifying to be more upstream appropriate (i.e., I do not have
documentation for the IP, be it this implementation or the generic
docs).

Thanks in advance and sorry again about it getting dropped from the
original submission!

Changes since v2:
    * Adjust to the new method of defining the MTL/DMA offsets in the
      platform glue

Changes since v1:
    * None

 .../stmicro/stmmac/dwmac-qcom-ethqos.c        | 121 +++++++++++++++---
 1 file changed, 100 insertions(+), 21 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
index ec9e93147716..f47ae62a5662 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
@@ -11,6 +11,7 @@
 
 #define RGMII_IO_MACRO_CONFIG		0x0
 #define SDCC_HC_REG_DLL_CONFIG		0x4
+#define SDCC_TEST_CTL			0x8
 #define SDCC_HC_REG_DDR_CONFIG		0xC
 #define SDCC_HC_REG_DLL_CONFIG2		0x10
 #define SDC4_STATUS			0x14
@@ -49,6 +50,7 @@
 #define SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY	GENMASK(26, 21)
 #define SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_CODE	GENMASK(29, 27)
 #define SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_EN	BIT(30)
+#define SDCC_DDR_CONFIG_TCXO_CYCLES_CNT		GENMASK(11, 9)
 #define SDCC_DDR_CONFIG_PRG_RCLK_DLY		GENMASK(8, 0)
 
 /* SDCC_HC_REG_DLL_CONFIG2 fields */
@@ -79,6 +81,8 @@ struct ethqos_emac_driver_data {
 	const struct ethqos_emac_por *por;
 	unsigned int num_por;
 	bool rgmii_config_loopback_en;
+	bool has_emac3;
+	struct dwmac4_addrs dwmac4_addrs;
 };
 
 struct qcom_ethqos {
@@ -92,6 +96,7 @@ struct qcom_ethqos {
 	const struct ethqos_emac_por *por;
 	unsigned int num_por;
 	bool rgmii_config_loopback_en;
+	bool has_emac3;
 };
 
 static int rgmii_readl(struct qcom_ethqos *ethqos, unsigned int offset)
@@ -184,6 +189,7 @@ static const struct ethqos_emac_driver_data emac_v2_3_0_data = {
 	.por = emac_v2_3_0_por,
 	.num_por = ARRAY_SIZE(emac_v2_3_0_por),
 	.rgmii_config_loopback_en = true,
+	.has_emac3 = false,
 };
 
 static const struct ethqos_emac_por emac_v2_1_0_por[] = {
@@ -199,6 +205,39 @@ static const struct ethqos_emac_driver_data emac_v2_1_0_data = {
 	.por = emac_v2_1_0_por,
 	.num_por = ARRAY_SIZE(emac_v2_1_0_por),
 	.rgmii_config_loopback_en = false,
+	.has_emac3 = false,
+};
+
+static const struct ethqos_emac_por emac_v3_0_0_por[] = {
+	{ .offset = RGMII_IO_MACRO_CONFIG,	.value = 0x40c01343 },
+	{ .offset = SDCC_HC_REG_DLL_CONFIG,	.value = 0x2004642c },
+	{ .offset = SDCC_HC_REG_DDR_CONFIG,	.value = 0x80040800 },
+	{ .offset = SDCC_HC_REG_DLL_CONFIG2,	.value = 0x00200000 },
+	{ .offset = SDCC_USR_CTL,		.value = 0x00010800 },
+	{ .offset = RGMII_IO_MACRO_CONFIG2,	.value = 0x00002060 },
+};
+
+static const struct ethqos_emac_driver_data emac_v3_0_0_data = {
+	.por = emac_v3_0_0_por,
+	.num_por = ARRAY_SIZE(emac_v3_0_0_por),
+	.rgmii_config_loopback_en = false,
+	.has_emac3 = true,
+	.dwmac4_addrs = {
+		.dma_chan = 0x00008100,
+		.dma_chan_offset = 0x1000,
+		.mtl_chan = 0x00008000,
+		.mtl_chan_offset = 0x1000,
+		.mtl_ets_ctrl = 0x00008010,
+		.mtl_ets_ctrl_offset = 0x1000,
+		.mtl_txq_weight = 0x00008018,
+		.mtl_txq_weight_offset = 0x1000,
+		.mtl_send_slp_cred = 0x0000801c,
+		.mtl_send_slp_cred_offset = 0x1000,
+		.mtl_high_cred = 0x00008020,
+		.mtl_high_cred_offset = 0x1000,
+		.mtl_low_cred = 0x00008024,
+		.mtl_low_cred_offset = 0x1000,
+	},
 };
 
 static int ethqos_dll_configure(struct qcom_ethqos *ethqos)
@@ -222,11 +261,13 @@ static int ethqos_dll_configure(struct qcom_ethqos *ethqos)
 	rgmii_updatel(ethqos, SDCC_DLL_CONFIG_DLL_EN,
 		      SDCC_DLL_CONFIG_DLL_EN, SDCC_HC_REG_DLL_CONFIG);
 
-	rgmii_updatel(ethqos, SDCC_DLL_MCLK_GATING_EN,
-		      0, SDCC_HC_REG_DLL_CONFIG);
+	if (!ethqos->has_emac3) {
+		rgmii_updatel(ethqos, SDCC_DLL_MCLK_GATING_EN,
+			      0, SDCC_HC_REG_DLL_CONFIG);
 
-	rgmii_updatel(ethqos, SDCC_DLL_CDR_FINE_PHASE,
-		      0, SDCC_HC_REG_DLL_CONFIG);
+		rgmii_updatel(ethqos, SDCC_DLL_CDR_FINE_PHASE,
+			      0, SDCC_HC_REG_DLL_CONFIG);
+	}
 
 	/* Wait for CK_OUT_EN clear */
 	do {
@@ -261,18 +302,20 @@ static int ethqos_dll_configure(struct qcom_ethqos *ethqos)
 	rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_DDR_CAL_EN,
 		      SDCC_DLL_CONFIG2_DDR_CAL_EN, SDCC_HC_REG_DLL_CONFIG2);
 
-	rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_DLL_CLOCK_DIS,
-		      0, SDCC_HC_REG_DLL_CONFIG2);
+	if (!ethqos->has_emac3) {
+		rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_DLL_CLOCK_DIS,
+			      0, SDCC_HC_REG_DLL_CONFIG2);
 
-	rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_MCLK_FREQ_CALC,
-		      0x1A << 10, SDCC_HC_REG_DLL_CONFIG2);
+		rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_MCLK_FREQ_CALC,
+			      0x1A << 10, SDCC_HC_REG_DLL_CONFIG2);
 
-	rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_DDR_TRAFFIC_INIT_SEL,
-		      BIT(2), SDCC_HC_REG_DLL_CONFIG2);
+		rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_DDR_TRAFFIC_INIT_SEL,
+			      BIT(2), SDCC_HC_REG_DLL_CONFIG2);
 
-	rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_DDR_TRAFFIC_INIT_SW,
-		      SDCC_DLL_CONFIG2_DDR_TRAFFIC_INIT_SW,
-		      SDCC_HC_REG_DLL_CONFIG2);
+		rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_DDR_TRAFFIC_INIT_SW,
+			      SDCC_DLL_CONFIG2_DDR_TRAFFIC_INIT_SW,
+			      SDCC_HC_REG_DLL_CONFIG2);
+	}
 
 	return 0;
 }
@@ -327,9 +370,17 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
 			      RGMII_CONFIG2_RX_PROG_SWAP,
 			      RGMII_IO_MACRO_CONFIG2);
 
-		/* Set PRG_RCLK_DLY to 57 for 1.8 ns delay */
-		rgmii_updatel(ethqos, SDCC_DDR_CONFIG_PRG_RCLK_DLY,
-			      57, SDCC_HC_REG_DDR_CONFIG);
+		/* PRG_RCLK_DLY = TCXO period * TCXO_CYCLES_CNT / 2 * RX delay ns,
+		 * in practice this becomes PRG_RCLK_DLY = 52 * 4 / 2 * RX delay ns
+		 */
+		if (ethqos->has_emac3)
+			/* 0.9 ns */
+			rgmii_updatel(ethqos, SDCC_DDR_CONFIG_PRG_RCLK_DLY,
+				      115, SDCC_HC_REG_DDR_CONFIG);
+		else
+			/* 1.8 ns */
+			rgmii_updatel(ethqos, SDCC_DDR_CONFIG_PRG_RCLK_DLY,
+				      57, SDCC_HC_REG_DDR_CONFIG);
 		rgmii_updatel(ethqos, SDCC_DDR_CONFIG_PRG_DLY_EN,
 			      SDCC_DDR_CONFIG_PRG_DLY_EN,
 			      SDCC_HC_REG_DDR_CONFIG);
@@ -355,8 +406,15 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
 			      BIT(6), RGMII_IO_MACRO_CONFIG);
 		rgmii_updatel(ethqos, RGMII_CONFIG2_RSVD_CONFIG15,
 			      0, RGMII_IO_MACRO_CONFIG2);
-		rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP,
-			      0, RGMII_IO_MACRO_CONFIG2);
+
+		if (ethqos->has_emac3)
+			rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP,
+				      RGMII_CONFIG2_RX_PROG_SWAP,
+				      RGMII_IO_MACRO_CONFIG2);
+		else
+			rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP,
+				      0, RGMII_IO_MACRO_CONFIG2);
+
 		/* Write 0x5 to PRG_RCLK_DLY_CODE */
 		rgmii_updatel(ethqos, SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_CODE,
 			      (BIT(29) | BIT(27)), SDCC_HC_REG_DDR_CONFIG);
@@ -389,8 +447,13 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
 			      RGMII_IO_MACRO_CONFIG);
 		rgmii_updatel(ethqos, RGMII_CONFIG2_RSVD_CONFIG15,
 			      0, RGMII_IO_MACRO_CONFIG2);
-		rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP,
-			      0, RGMII_IO_MACRO_CONFIG2);
+		if (ethqos->has_emac3)
+			rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP,
+				      RGMII_CONFIG2_RX_PROG_SWAP,
+				      RGMII_IO_MACRO_CONFIG2);
+		else
+			rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP,
+				      0, RGMII_IO_MACRO_CONFIG2);
 		/* Write 0x5 to PRG_RCLK_DLY_CODE */
 		rgmii_updatel(ethqos, SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_CODE,
 			      (BIT(29) | BIT(27)), SDCC_HC_REG_DDR_CONFIG);
@@ -433,6 +496,17 @@ static int ethqos_configure(struct qcom_ethqos *ethqos)
 	rgmii_updatel(ethqos, SDCC_DLL_CONFIG_PDN,
 		      SDCC_DLL_CONFIG_PDN, SDCC_HC_REG_DLL_CONFIG);
 
+	if (ethqos->has_emac3) {
+		if (ethqos->speed == SPEED_1000) {
+			rgmii_writel(ethqos, 0x1800000, SDCC_TEST_CTL);
+			rgmii_writel(ethqos, 0x2C010800, SDCC_USR_CTL);
+			rgmii_writel(ethqos, 0xA001, SDCC_HC_REG_DLL_CONFIG2);
+		} else {
+			rgmii_writel(ethqos, 0x40010800, SDCC_USR_CTL);
+			rgmii_writel(ethqos, 0xA001, SDCC_HC_REG_DLL_CONFIG2);
+		}
+	}
+
 	/* Clear DLL_RST */
 	rgmii_updatel(ethqos, SDCC_DLL_CONFIG_DLL_RST, 0,
 		      SDCC_HC_REG_DLL_CONFIG);
@@ -452,7 +526,9 @@ static int ethqos_configure(struct qcom_ethqos *ethqos)
 			      SDCC_HC_REG_DLL_CONFIG);
 
 		/* Set USR_CTL bit 26 with mask of 3 bits */
-		rgmii_updatel(ethqos, GENMASK(26, 24), BIT(26), SDCC_USR_CTL);
+		if (!ethqos->has_emac3)
+			rgmii_updatel(ethqos, GENMASK(26, 24), BIT(26),
+				      SDCC_USR_CTL);
 
 		/* wait for DLL LOCK */
 		do {
@@ -547,6 +623,7 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
 	ethqos->por = data->por;
 	ethqos->num_por = data->num_por;
 	ethqos->rgmii_config_loopback_en = data->rgmii_config_loopback_en;
+	ethqos->has_emac3 = data->has_emac3;
 
 	ethqos->rgmii_clk = devm_clk_get(&pdev->dev, "rgmii");
 	if (IS_ERR(ethqos->rgmii_clk)) {
@@ -566,6 +643,7 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
 	plat_dat->fix_mac_speed = ethqos_fix_mac_speed;
 	plat_dat->dump_debug_regs = rgmii_dump;
 	plat_dat->has_gmac4 = 1;
+	plat_dat->dwmac4_addrs = &data->dwmac4_addrs;
 	plat_dat->pmt = 1;
 	plat_dat->tso_en = of_property_read_bool(np, "snps,tso");
 	if (of_device_is_compatible(np, "qcom,qcs404-ethqos"))
@@ -603,6 +681,7 @@ static int qcom_ethqos_remove(struct platform_device *pdev)
 
 static const struct of_device_id qcom_ethqos_match[] = {
 	{ .compatible = "qcom,qcs404-ethqos", .data = &emac_v2_3_0_data},
+	{ .compatible = "qcom,sc8280xp-ethqos", .data = &emac_v3_0_0_data},
 	{ .compatible = "qcom,sm8150-ethqos", .data = &emac_v2_1_0_data},
 	{ }
 };
-- 
2.39.2

Re: [PATCH net-next v3 12/12] net: stmmac: dwmac-qcom-ethqos: Add EMAC3 support

[Paolo Abeni]

Hi,

On Mon, 2023-04-03 at 11:52 -0500, Andrew Halaney wrote:
> @@ -327,9 +370,17 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
>  			      RGMII_CONFIG2_RX_PROG_SWAP,
>  			      RGMII_IO_MACRO_CONFIG2);
>  
> -		/* Set PRG_RCLK_DLY to 57 for 1.8 ns delay */
> -		rgmii_updatel(ethqos, SDCC_DDR_CONFIG_PRG_RCLK_DLY,
> -			      57, SDCC_HC_REG_DDR_CONFIG);
> +		/* PRG_RCLK_DLY = TCXO period * TCXO_CYCLES_CNT / 2 * RX delay ns,
> +		 * in practice this becomes PRG_RCLK_DLY = 52 * 4 / 2 * RX delay ns
> +		 */
> +		if (ethqos->has_emac3)
> +			/* 0.9 ns */
> +			rgmii_updatel(ethqos, SDCC_DDR_CONFIG_PRG_RCLK_DLY,
> +				      115, SDCC_HC_REG_DDR_CONFIG);
> +		else
> +			/* 1.8 ns */
> +			rgmii_updatel(ethqos, SDCC_DDR_CONFIG_PRG_RCLK_DLY,
> +				      57, SDCC_HC_REG_DDR_CONFIG);

The only (very minor) comment I have is that AFAIK the preferred style
for the above block is: 

		if (ethqos->has_emac3) {
			/* 0.9 ns */
			rgmii_updatel(ethqos, SDCC_DDR_CONFIG_PRG_RCLK_DLY,
				      115, SDCC_HC_REG_DDR_CONFIG);
		} else {
			...

due to the comment presence this should be threaded as a multi-line statement.
(even if checkpatch does not complain).

Cheers,

Paolo

>  			      SDCC_HC_REG_DDR_CONFIG);
> @@ -355,8 +406,15 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
>  			      BIT(6), RGMII_IO_MACRO_CONFIG);
>  		rgmii_updatel(ethqos, RGMII_CONFIG2_RSVD_CONFIG15,
>  			      0, RGMII_IO_MACRO_CONFIG2);
> -		rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP,
> -			      0, RGMII_IO_MACRO_CONFIG2);
> +
> +		if (ethqos->has_emac3)
> +			rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP,
> +				      RGMII_CONFIG2_RX_PROG_SWAP,
> +				      RGMII_IO_MACRO_CONFIG2);
> +		else
> +			rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP,
> +				      0, RGMII_IO_MACRO_CONFIG2);
> +
>  		/* Write 0x5 to PRG_RCLK_DLY_CODE */
>  		rgmii_updatel(ethqos, SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_CODE,
>  			      (BIT(29) | BIT(27)), SDCC_HC_REG_DDR_CONFIG);
> @@ -389,8 +447,13 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
>  			      RGMII_IO_MACRO_CONFIG);
>  		rgmii_updatel(ethqos, RGMII_CONFIG2_RSVD_CONFIG15,
>  			      0, RGMII_IO_MACRO_CONFIG2);
> -		rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP,
> -			      0, RGMII_IO_MACRO_CONFIG2);
> +		if (ethqos->has_emac3)
> +			rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP,
> +				      RGMII_CONFIG2_RX_PROG_SWAP,
> +				      RGMII_IO_MACRO_CONFIG2);
> +		else
> +			rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP,
> +				      0, RGMII_IO_MACRO_CONFIG2);
>  		/* Write 0x5 to PRG_RCLK_DLY_CODE */
>  		rgmii_updatel(ethqos, SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_CODE,
>  			      (BIT(29) | BIT(27)), SDCC_HC_REG_DDR_CONFIG);
> @@ -433,6 +496,17 @@ static int ethqos_configure(struct qcom_ethqos *ethqos)
>  	rgmii_updatel(ethqos, SDCC_DLL_CONFIG_PDN,
>  		      SDCC_DLL_CONFIG_PDN, SDCC_HC_REG_DLL_CONFIG);
>  
> +	if (ethqos->has_emac3) {
> +		if (ethqos->speed == SPEED_1000) {
> +			rgmii_writel(ethqos, 0x1800000, SDCC_TEST_CTL);
> +			rgmii_writel(ethqos, 0x2C010800, SDCC_USR_CTL);
> +			rgmii_writel(ethqos, 0xA001, SDCC_HC_REG_DLL_CONFIG2);
> +		} else {
> +			rgmii_writel(ethqos, 0x40010800, SDCC_USR_CTL);
> +			rgmii_writel(ethqos, 0xA001, SDCC_HC_REG_DLL_CONFIG2);
> +		}
> +	}
> +
>  	/* Clear DLL_RST */
>  	rgmii_updatel(ethqos, SDCC_DLL_CONFIG_DLL_RST, 0,
>  		      SDCC_HC_REG_DLL_CONFIG);
> @@ -452,7 +526,9 @@ static int ethqos_configure(struct qcom_ethqos *ethqos)
>  			      SDCC_HC_REG_DLL_CONFIG);
>  
>  		/* Set USR_CTL bit 26 with mask of 3 bits */
> -		rgmii_updatel(ethqos, GENMASK(26, 24), BIT(26), SDCC_USR_CTL);
> +		if (!ethqos->has_emac3)
> +			rgmii_updatel(ethqos, GENMASK(26, 24), BIT(26),
> +				      SDCC_USR_CTL);
>  
>  		/* wait for DLL LOCK */
>  		do {
> @@ -547,6 +623,7 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
>  	ethqos->por = data->por;
>  	ethqos->num_por = data->num_por;
>  	ethqos->rgmii_config_loopback_en = data->rgmii_config_loopback_en;
> +	ethqos->has_emac3 = data->has_emac3;
>  
>  	ethqos->rgmii_clk = devm_clk_get(&pdev->dev, "rgmii");
>  	if (IS_ERR(ethqos->rgmii_clk)) {
> @@ -566,6 +643,7 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
>  	plat_dat->fix_mac_speed = ethqos_fix_mac_speed;
>  	plat_dat->dump_debug_regs = rgmii_dump;
>  	plat_dat->has_gmac4 = 1;
> +	plat_dat->dwmac4_addrs = &data->dwmac4_addrs;
>  	plat_dat->pmt = 1;
>  	plat_dat->tso_en = of_property_read_bool(np, "snps,tso");
>  	if (of_device_is_compatible(np, "qcom,qcs404-ethqos"))
> @@ -603,6 +681,7 @@ static int qcom_ethqos_remove(struct platform_device *pdev)
>  
>  static const struct of_device_id qcom_ethqos_match[] = {
>  	{ .compatible = "qcom,qcs404-ethqos", .data = &emac_v2_3_0_data},
> +	{ .compatible = "qcom,sc8280xp-ethqos", .data = &emac_v3_0_0_data},
>  	{ .compatible = "qcom,sm8150-ethqos", .data = &emac_v2_1_0_data},
>  	{ }
>  };

Re: [PATCH net-next v3 08/12] net: stmmac: Pass stmmac_priv in some callbacks

[Andrew Halaney]

On Sat, Apr 01, 2023 at 05:06:21PM +0200, Simon Horman wrote:
> On Fri, Mar 31, 2023 at 04:45:45PM -0500, Andrew Halaney wrote:
> > Passing stmmac_priv to some of the callbacks allows hwif implementations
> > to grab some data that platforms can customize. Adjust the callbacks
> > accordingly in preparation of such a platform customization.
> > 
> > Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
> 
> ...
> 
> >  #define stmmac_reset(__priv, __args...) \
> > @@ -223,59 +240,59 @@ struct stmmac_dma_ops {
> >  #define stmmac_dma_init(__priv, __args...) \
> >  	stmmac_do_void_callback(__priv, dma, init, __args)
> >  #define stmmac_init_chan(__priv, __args...) \
> > -	stmmac_do_void_callback(__priv, dma, init_chan, __args)
> > +	stmmac_do_void_callback(__priv, dma, init_chan, __priv, __args)
> 
> Hi Andrew,
> 
> Rather than maintaining these macros can we just get rid of them?
> I'd be surprised if things aren't nicer with functions in their place [1].
> 
> f.e., we now have (__priv, ..., __priv, ...) due to a generalisation
>       that seems to take a lot more than it gives.
> 
> [1] https://lore.kernel.org/linux-arm-kernel/ZBst1SzcIS4j+t46@corigine.com/
> 

Thanks for the pointer. I think that makes sense, I'll take that
approach for these functions (and maybe in a follow-up series I'll
tackle all of them just because the lack of consistency will eat me up).

Sorry for the delay, had some issues around the house that became
urgent.

Thanks,
Andrew

Re: [PATCH net-next v3 09/12] net: stmmac: dwmac4: Allow platforms to specify some DMA/MTL offsets

[Andrew Halaney]

On Sat, Apr 01, 2023 at 04:58:59PM +0200, Simon Horman wrote:
> On Fri, Mar 31, 2023 at 04:45:46PM -0500, Andrew Halaney wrote:
> > Some platforms have dwmac4 implementations that have a different
> > address space layout than the default, resulting in the need to define
> > their own DMA/MTL offsets.
> > 
> > Extend the functions to allow a platform driver to indicate what its
> > addresses are, overriding the defaults.
> > 
> > Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
> > ---
> > 
> > This patch (and the prior patch) are replacements for
> > https://lore.kernel.org/netdev/20230320204153.21736840@kernel.org/
> > as was requested. Hopefully I was understanding the intent correctly :)
> > 
> > I'm pretty sure further refinement will be requested for this one, but
> > it is the best I could come up with myself! Specifically some of the
> > naming, dealing with spacing in some older spots of dwmac4,
> > where the addresses should live in the structure hierarchy, etc are
> > things I would not be surprised to have to rework if this is still
> > preferred over the wrapper approach.
> > 
> > Changes since v2:
> >     * New, replacing old wrapper approach
> > 
> >  drivers/net/ethernet/stmicro/stmmac/dwmac4.h  |  91 ++++++++--
> >  .../net/ethernet/stmicro/stmmac/dwmac4_core.c |  36 ++--
> >  .../net/ethernet/stmicro/stmmac/dwmac4_dma.c  | 157 ++++++++++--------
> >  .../net/ethernet/stmicro/stmmac/dwmac4_dma.h  |  51 +++---
> >  .../net/ethernet/stmicro/stmmac/dwmac4_lib.c  |  67 +++++---
> >  include/linux/stmmac.h                        |  19 +++
> >  6 files changed, 279 insertions(+), 142 deletions(-)
> > 
> > diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
> > index ccd49346d3b3..a0c0ee1dc13f 100644
> > --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
> > +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
> > @@ -336,14 +336,23 @@ enum power_event {
> >  
> >  #define MTL_CHAN_BASE_ADDR		0x00000d00
> >  #define MTL_CHAN_BASE_OFFSET		0x40
> > -#define MTL_CHANX_BASE_ADDR(x)		(MTL_CHAN_BASE_ADDR + \
> > -					(x * MTL_CHAN_BASE_OFFSET))
> > -
> > -#define MTL_CHAN_TX_OP_MODE(x)		MTL_CHANX_BASE_ADDR(x)
> > -#define MTL_CHAN_TX_DEBUG(x)		(MTL_CHANX_BASE_ADDR(x) + 0x8)
> > -#define MTL_CHAN_INT_CTRL(x)		(MTL_CHANX_BASE_ADDR(x) + 0x2c)
> > -#define MTL_CHAN_RX_OP_MODE(x)		(MTL_CHANX_BASE_ADDR(x) + 0x30)
> > -#define MTL_CHAN_RX_DEBUG(x)		(MTL_CHANX_BASE_ADDR(x) + 0x38)
> > +#define MTL_CHANX_BASE_ADDR(addrs, x)  \
> > +({ \
> > +	const struct dwmac4_addrs *__addrs = addrs; \
> > +	const u32 __x = x; \
> > +	u32 __addr; \
> > +	if (__addrs) \
> > +		__addr = __addrs->mtl_chan + (__x * __addrs->mtl_chan_offset); \
> > +	else \
> > +		__addr = MTL_CHAN_BASE_ADDR + (__x * MTL_CHAN_BASE_OFFSET); \
> > +	__addr; \
> > +})
> 
> Could this and similar macros added by this patch be functions?
> From my pov a benefit would be slightly more type safety.
> And as a bonus there wouldn't be any need to handle aliasing of input.
> 

Sure, to be honest I'll be much more comfortable coding that up anyways.
I don't do a ton of macro programming and had to refamiliarize myself of
the pitfalls that comes with it when doing this.

Thanks,
Andrew

Re: [PATCH net-next v3 08/12] net: stmmac: Pass stmmac_priv in some callbacks

[Andrew Halaney]

On Fri, Apr 07, 2023 at 12:34:53PM -0500, Andrew Halaney wrote:
> On Sat, Apr 01, 2023 at 05:06:21PM +0200, Simon Horman wrote:
> > On Fri, Mar 31, 2023 at 04:45:45PM -0500, Andrew Halaney wrote:
> > > Passing stmmac_priv to some of the callbacks allows hwif implementations
> > > to grab some data that platforms can customize. Adjust the callbacks
> > > accordingly in preparation of such a platform customization.
> > > 
> > > Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
> > 
> > ...
> > 
> > >  #define stmmac_reset(__priv, __args...) \
> > > @@ -223,59 +240,59 @@ struct stmmac_dma_ops {
> > >  #define stmmac_dma_init(__priv, __args...) \
> > >  	stmmac_do_void_callback(__priv, dma, init, __args)
> > >  #define stmmac_init_chan(__priv, __args...) \
> > > -	stmmac_do_void_callback(__priv, dma, init_chan, __args)
> > > +	stmmac_do_void_callback(__priv, dma, init_chan, __priv, __args)
> > 
> > Hi Andrew,
> > 
> > Rather than maintaining these macros can we just get rid of them?
> > I'd be surprised if things aren't nicer with functions in their place [1].
> > 
> > f.e., we now have (__priv, ..., __priv, ...) due to a generalisation
> >       that seems to take a lot more than it gives.
> > 
> > [1] https://lore.kernel.org/linux-arm-kernel/ZBst1SzcIS4j+t46@corigine.com/
> > 
> 
> Thanks for the pointer. I think that makes sense, I'll take that
> approach for these functions (and maybe in a follow-up series I'll
> tackle all of them just because the lack of consistency will eat me up).
> 

I tried taking this approach for a spin, and I'm not so sure about it
now!

1. Implementing the functions as static inline requires us to know
   about stmmac_priv, but that's getting into circular dependency land
2. You could define them in hwif.c, but then they're not inlined
3. There's still a good bit of boilerplate that's repeated all over
   with the approach. Ignoring 1 above, you get something like this:

static inline int stmmac_init_chan(struct stmmac_priv *priv,
				   void __iomem *ioaddr,
				   struct stmmac_dma_cfg *dma_cfg, u32 chan)
{
	if (priv->hw->dma && priv->hw->dma->init_chan) {
		priv->hw->dma->init_chan(priv, ioaddr, dma_cfg, chan);
		return 0;
	}
	return -EINVAL;
}

that is then repeated for every function... which is making me actually
appreciate the macros some for reducing boilerplate.

Am I suffering from a case of holiday brain, and 1-3 above are silly
points with obvious answers, or do they make you reconsider continuing
with the current approach in hwif.h?

Thanks,
Andrew

Re: [PATCH net-next v3 08/12] net: stmmac: Pass stmmac_priv in some callbacks

[Simon Horman]

On Mon, Apr 10, 2023 at 04:24:22PM -0500, Andrew Halaney wrote:
> On Fri, Apr 07, 2023 at 12:34:53PM -0500, Andrew Halaney wrote:
> > On Sat, Apr 01, 2023 at 05:06:21PM +0200, Simon Horman wrote:
> > > On Fri, Mar 31, 2023 at 04:45:45PM -0500, Andrew Halaney wrote:
> > > > Passing stmmac_priv to some of the callbacks allows hwif implementations
> > > > to grab some data that platforms can customize. Adjust the callbacks
> > > > accordingly in preparation of such a platform customization.
> > > > 
> > > > Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
> > > 
> > > ...
> > > 
> > > >  #define stmmac_reset(__priv, __args...) \
> > > > @@ -223,59 +240,59 @@ struct stmmac_dma_ops {
> > > >  #define stmmac_dma_init(__priv, __args...) \
> > > >  	stmmac_do_void_callback(__priv, dma, init, __args)
> > > >  #define stmmac_init_chan(__priv, __args...) \
> > > > -	stmmac_do_void_callback(__priv, dma, init_chan, __args)
> > > > +	stmmac_do_void_callback(__priv, dma, init_chan, __priv, __args)
> > > 
> > > Hi Andrew,
> > > 
> > > Rather than maintaining these macros can we just get rid of them?
> > > I'd be surprised if things aren't nicer with functions in their place [1].
> > > 
> > > f.e., we now have (__priv, ..., __priv, ...) due to a generalisation
> > >       that seems to take a lot more than it gives.
> > > 
> > > [1] https://lore.kernel.org/linux-arm-kernel/ZBst1SzcIS4j+t46@corigine.com/
> > > 
> > 
> > Thanks for the pointer. I think that makes sense, I'll take that
> > approach for these functions (and maybe in a follow-up series I'll
> > tackle all of them just because the lack of consistency will eat me up).
> > 
> 
> I tried taking this approach for a spin, and I'm not so sure about it
> now!
> 
> 1. Implementing the functions as static inline requires us to know
>    about stmmac_priv, but that's getting into circular dependency land
> 2. You could define them in hwif.c, but then they're not inlined
> 3. There's still a good bit of boilerplate that's repeated all over
>    with the approach. Ignoring 1 above, you get something like this:
> 
> static inline int stmmac_init_chan(struct stmmac_priv *priv,
> 				   void __iomem *ioaddr,
> 				   struct stmmac_dma_cfg *dma_cfg, u32 chan)
> {
> 	if (priv->hw->dma && priv->hw->dma->init_chan) {
> 		priv->hw->dma->init_chan(priv, ioaddr, dma_cfg, chan);
> 		return 0;
> 	}
> 	return -EINVAL;
> }
> 
> that is then repeated for every function... which is making me actually
> appreciate the macros some for reducing boilerplate.
> 
> Am I suffering from a case of holiday brain, and 1-3 above are silly
> points with obvious answers, or do they make you reconsider continuing
> with the current approach in hwif.h?

I'm about to embark to the holiday brain zone.

But before I do I wanted to acknowledge your concerns and that, yes,
it may be easier said than done.