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https://github.com/openwrt/openwrt.git
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bcm4908: update Ethernet driver
Use the latest version sent upsteram. Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
This commit is contained in:
Rafał Miłecki
parent
670bfc86c8
commit
c382fe857d
@ -40,7 +40,7 @@ CONFIG_B53=y
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# CONFIG_B53_MMAP_DRIVER is not set
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# CONFIG_B53_SERDES is not set
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# CONFIG_B53_SRAB_DRIVER is not set
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CONFIG_BCM4908ENET=y
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CONFIG_BCM4908_ENET=y
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CONFIG_BCM7XXX_PHY=y
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CONFIG_BCM_NET_PHYLIB=y
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CONFIG_BCM_PMB=y
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@ -1,22 +1,25 @@
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
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Date: Fri, 5 Feb 2021 21:57:41 +0100
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Subject: [PATCH 1/2] dt-bindings: net: document BCM4908 Ethernet controller
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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BCM4908 is a family of SoCs with integrated Ethernet controller.
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Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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---
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.../bindings/net/brcm,bcm4908enet.yaml | 45 +++++++++++++++++++
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1 file changed, 45 insertions(+)
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create mode 100644 Documentation/devicetree/bindings/net/brcm,bcm4908enet.yaml
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.../bindings/net/brcm,bcm4908-enet.yaml | 43 +++++++++++++++++++
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1 file changed, 43 insertions(+)
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create mode 100644 Documentation/devicetree/bindings/net/brcm,bcm4908-enet.yaml
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--- /dev/null
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+++ b/Documentation/devicetree/bindings/net/brcm,bcm4908enet.yaml
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@@ -0,0 +1,45 @@
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+++ b/Documentation/devicetree/bindings/net/brcm,bcm4908-enet.yaml
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@@ -0,0 +1,43 @@
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+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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+%YAML 1.2
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+---
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+$id: http://devicetree.org/schemas/net/brcm,bcm4908enet.yaml#
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+$id: http://devicetree.org/schemas/net/brcm,bcm4908-enet.yaml#
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+$schema: http://devicetree.org/meta-schemas/core.yaml#
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+
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+title: Broadcom BCM4908 Ethernet controller
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@ -26,9 +29,12 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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+maintainers:
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+ - Rafał Miłecki <rafal@milecki.pl>
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+
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+allOf:
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+ - $ref: ethernet-controller.yaml#
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+
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+properties:
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+ compatible:
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+ const: brcm,bcm4908enet
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+ const: brcm,bcm4908-enet
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+
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+ reg:
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+ maxItems: 1
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@ -36,13 +42,9 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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+ interrupts:
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+ description: RX interrupt
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+
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+ interrupt-names:
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+ const: rx
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+
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+required:
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+ - reg
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+ - interrupts
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+ - interrupt-names
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+
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+additionalProperties: false
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+
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@ -52,9 +54,8 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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+ #include <dt-bindings/interrupt-controller/arm-gic.h>
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+
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+ ethernet@80002000 {
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+ compatible = "brcm,bcm4908enet";
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+ compatible = "brcm,bcm4908-enet";
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+ reg = <0x80002000 0x1000>;
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+
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+ interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>;
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+ interrupt-names = "rx";
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+ };
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@ -1,21 +1,28 @@
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
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Date: Fri, 5 Feb 2021 21:59:51 +0100
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Subject: [PATCH 2/2] net: broadcom: bcm4908enet: add BCM4908 controller driver
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Subject: [PATCH 2/2] net: broadcom: bcm4908_enet: add BCM4908 controller
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driver
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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BCM4908 SoCs family uses Ethernel controller that includes UniMAC but
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uses different DMA engine (than other controllers) and requires
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different programming.
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BCM4908 SoCs family has integrated Ethernel controller that includes
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UniMAC but uses different DMA engine (than other controllers) and
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requires different programming.
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Ethernet controller in BCM4908 is always connected to the internal SF2
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switch's port and uses fixed link.
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Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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---
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MAINTAINERS | 9 +
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drivers/net/ethernet/broadcom/Kconfig | 8 +
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drivers/net/ethernet/broadcom/Makefile | 1 +
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drivers/net/ethernet/broadcom/bcm4908enet.c | 676 ++++++++++++++++++++
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drivers/net/ethernet/broadcom/bcm4908enet.h | 96 +++
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5 files changed, 790 insertions(+)
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create mode 100644 drivers/net/ethernet/broadcom/bcm4908enet.c
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create mode 100644 drivers/net/ethernet/broadcom/bcm4908enet.h
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MAINTAINERS | 9 +
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drivers/net/ethernet/broadcom/Kconfig | 8 +
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drivers/net/ethernet/broadcom/Makefile | 1 +
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drivers/net/ethernet/broadcom/bcm4908_enet.c | 671 +++++++++++++++++++
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drivers/net/ethernet/broadcom/bcm4908_enet.h | 96 +++
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5 files changed, 785 insertions(+)
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create mode 100644 drivers/net/ethernet/broadcom/bcm4908_enet.c
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create mode 100644 drivers/net/ethernet/broadcom/bcm4908_enet.h
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--- a/MAINTAINERS
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+++ b/MAINTAINERS
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@ -28,8 +35,8 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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+M: bcm-kernel-feedback-list@broadcom.com
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+L: netdev@vger.kernel.org
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+S: Maintained
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+F: Documentation/devicetree/bindings/net/brcm,bcm4908enet.yaml
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+F: drivers/net/ethernet/broadcom/bcm4908enet.*
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+F: Documentation/devicetree/bindings/net/brcm,bcm4908-enet.yaml
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+F: drivers/net/ethernet/broadcom/bcm4908_enet.*
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+F: drivers/net/ethernet/broadcom/unimac.h
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+
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BROADCOM BCM5301X ARM ARCHITECTURE
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@ -41,10 +48,10 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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depends on B44_PCI_AUTOSELECT && B44_PCICORE_AUTOSELECT
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default y
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+config BCM4908ENET
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+config BCM4908_ENET
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+ tristate "Broadcom BCM4908 internal mac support"
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+ depends on ARCH_BCM4908 || COMPILE_TEST
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+ default y
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+ default ARCH_BCM4908
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+ help
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+ This driver supports Ethernet controller integrated into Broadcom
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+ BCM4908 family SoCs.
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@ -58,13 +65,13 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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#
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obj-$(CONFIG_B44) += b44.o
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+obj-$(CONFIG_BCM4908ENET) += bcm4908enet.o
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+obj-$(CONFIG_BCM4908_ENET) += bcm4908_enet.o
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obj-$(CONFIG_BCM63XX_ENET) += bcm63xx_enet.o
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obj-$(CONFIG_BCMGENET) += genet/
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obj-$(CONFIG_BNX2) += bnx2.o
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--- /dev/null
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+++ b/drivers/net/ethernet/broadcom/bcm4908enet.c
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@@ -0,0 +1,676 @@
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+++ b/drivers/net/ethernet/broadcom/bcm4908_enet.c
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@@ -0,0 +1,671 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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+/*
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+ * Copyright (C) 2021 Rafał Miłecki <rafal@milecki.pl>
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@ -79,7 +86,7 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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+#include <linux/slab.h>
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+#include <linux/string.h>
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+
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+#include "bcm4908enet.h"
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+#include "bcm4908_enet.h"
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+#include "unimac.h"
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+
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+#define ENET_DMA_CH_RX_CFG ENET_DMA_CH0_CFG
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@ -100,18 +107,18 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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+#define ENET_MTU_MAX 1500 /* Is it possible to support 2044? */
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+#define ENET_MTU_MAX_EXTRA_SIZE 32 /* L2 */
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+
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+struct bcm4908enet_dma_ring_bd {
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+struct bcm4908_enet_dma_ring_bd {
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+ __le32 ctl;
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+ __le32 addr;
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+} __packed;
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+
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+struct bcm4908enet_dma_ring_slot {
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+struct bcm4908_enet_dma_ring_slot {
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+ struct sk_buff *skb;
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+ unsigned int len;
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+ dma_addr_t dma_addr;
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+};
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+
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+struct bcm4908enet_dma_ring {
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+struct bcm4908_enet_dma_ring {
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+ int is_tx;
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+ int read_idx;
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+ int write_idx;
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@ -121,38 +128,38 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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+
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+ union {
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+ void *cpu_addr;
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+ struct bcm4908enet_dma_ring_bd *buf_desc;
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+ struct bcm4908_enet_dma_ring_bd *buf_desc;
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+ };
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+ dma_addr_t dma_addr;
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+
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+ struct bcm4908enet_dma_ring_slot *slots;
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+ struct bcm4908_enet_dma_ring_slot *slots;
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+};
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+
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+struct bcm4908enet {
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+struct bcm4908_enet {
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+ struct device *dev;
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+ struct net_device *netdev;
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+ struct napi_struct napi;
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+ void __iomem *base;
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+
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+ struct bcm4908enet_dma_ring tx_ring;
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+ struct bcm4908enet_dma_ring rx_ring;
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+ struct bcm4908_enet_dma_ring tx_ring;
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+ struct bcm4908_enet_dma_ring rx_ring;
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+};
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+
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+/***
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+ * R/W ops
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+ */
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+
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+static inline u32 enet_read(struct bcm4908enet *enet, u16 offset)
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+static u32 enet_read(struct bcm4908_enet *enet, u16 offset)
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+{
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+ return readl(enet->base + offset);
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+}
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+
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+static inline void enet_write(struct bcm4908enet *enet, u16 offset, u32 value)
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+static void enet_write(struct bcm4908_enet *enet, u16 offset, u32 value)
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+{
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+ writel(value, enet->base + offset);
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+}
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+
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+static inline void enet_maskset(struct bcm4908enet *enet, u16 offset, u32 mask, u32 set)
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+static void enet_maskset(struct bcm4908_enet *enet, u16 offset, u32 mask, u32 set)
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+{
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+ u32 val;
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+
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@ -163,27 +170,22 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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+ enet_write(enet, offset, val);
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+}
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+
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+static inline void enet_set(struct bcm4908enet *enet, u16 offset, u32 set)
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+static void enet_set(struct bcm4908_enet *enet, u16 offset, u32 set)
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+{
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+ enet_maskset(enet, offset, set, set);
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+}
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+
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+static inline u32 enet_umac_read(struct bcm4908enet *enet, u16 offset)
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+static u32 enet_umac_read(struct bcm4908_enet *enet, u16 offset)
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+{
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+ return enet_read(enet, ENET_UNIMAC + offset);
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+}
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+
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+static inline void enet_umac_write(struct bcm4908enet *enet, u16 offset, u32 value)
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+static void enet_umac_write(struct bcm4908_enet *enet, u16 offset, u32 value)
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+{
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+ enet_write(enet, ENET_UNIMAC + offset, value);
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+}
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+
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+static inline void enet_umac_maskset(struct bcm4908enet *enet, u16 offset, u32 mask, u32 set)
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+{
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+ enet_maskset(enet, ENET_UNIMAC + offset, mask, set);
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+}
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+
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+static inline void enet_umac_set(struct bcm4908enet *enet, u16 offset, u32 set)
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+static void enet_umac_set(struct bcm4908_enet *enet, u16 offset, u32 set)
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+{
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+ enet_set(enet, ENET_UNIMAC + offset, set);
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+}
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@ -192,17 +194,17 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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+ * Helpers
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+ */
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+
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+static void bcm4908enet_intrs_on(struct bcm4908enet *enet)
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+static void bcm4908_enet_intrs_on(struct bcm4908_enet *enet)
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+{
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+ enet_write(enet, ENET_DMA_CH_RX_CFG + ENET_DMA_CH_CFG_INT_MASK, ENET_DMA_INT_DEFAULTS);
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+}
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+
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+static void bcm4908enet_intrs_off(struct bcm4908enet *enet)
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+static void bcm4908_enet_intrs_off(struct bcm4908_enet *enet)
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+{
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+ enet_write(enet, ENET_DMA_CH_RX_CFG + ENET_DMA_CH_CFG_INT_MASK, 0);
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+}
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+
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+static void bcm4908enet_intrs_ack(struct bcm4908enet *enet)
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+static void bcm4908_enet_intrs_ack(struct bcm4908_enet *enet)
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+{
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+ enet_write(enet, ENET_DMA_CH_RX_CFG + ENET_DMA_CH_CFG_INT_STAT, ENET_DMA_INT_DEFAULTS);
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+}
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@ -211,9 +213,10 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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+ * DMA
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+ */
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+
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+static int bcm4908_dma_alloc_buf_descs(struct bcm4908enet *enet, struct bcm4908enet_dma_ring *ring)
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+static int bcm4908_dma_alloc_buf_descs(struct bcm4908_enet *enet,
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+ struct bcm4908_enet_dma_ring *ring)
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+{
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+ int size = ring->length * sizeof(struct bcm4908enet_dma_ring_bd);
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+ int size = ring->length * sizeof(struct bcm4908_enet_dma_ring_bd);
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+ struct device *dev = enet->dev;
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+
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+ ring->cpu_addr = dma_alloc_coherent(dev, size, &ring->dma_addr, GFP_KERNEL);
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@ -229,8 +232,6 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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+ if (!ring->slots)
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+ goto err_free_buf_descs;
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+
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+ memset(ring->cpu_addr, 0, size);
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+
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+ ring->read_idx = 0;
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+ ring->write_idx = 0;
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+
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@ -241,28 +242,28 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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+ return -ENOMEM;
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+}
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+
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+static void bcm4908enet_dma_free(struct bcm4908enet *enet)
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+static void bcm4908_enet_dma_free(struct bcm4908_enet *enet)
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+{
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+ struct bcm4908enet_dma_ring *tx_ring = &enet->tx_ring;
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+ struct bcm4908enet_dma_ring *rx_ring = &enet->rx_ring;
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+ struct bcm4908_enet_dma_ring *tx_ring = &enet->tx_ring;
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+ struct bcm4908_enet_dma_ring *rx_ring = &enet->rx_ring;
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+ struct device *dev = enet->dev;
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+ int size;
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+
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+ size = rx_ring->length * sizeof(struct bcm4908enet_dma_ring_bd);
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+ size = rx_ring->length * sizeof(struct bcm4908_enet_dma_ring_bd);
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+ if (rx_ring->cpu_addr)
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+ dma_free_coherent(dev, size, rx_ring->cpu_addr, rx_ring->dma_addr);
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+ kfree(rx_ring->slots);
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+
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+ size = tx_ring->length * sizeof(struct bcm4908enet_dma_ring_bd);
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+ size = tx_ring->length * sizeof(struct bcm4908_enet_dma_ring_bd);
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+ if (tx_ring->cpu_addr)
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+ dma_free_coherent(dev, size, tx_ring->cpu_addr, tx_ring->dma_addr);
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+ kfree(tx_ring->slots);
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+}
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+
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+static int bcm4908enet_dma_alloc(struct bcm4908enet *enet)
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+static int bcm4908_enet_dma_alloc(struct bcm4908_enet *enet)
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+{
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+ struct bcm4908enet_dma_ring *tx_ring = &enet->tx_ring;
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+ struct bcm4908enet_dma_ring *rx_ring = &enet->rx_ring;
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+ struct bcm4908_enet_dma_ring *tx_ring = &enet->tx_ring;
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+ struct bcm4908_enet_dma_ring *rx_ring = &enet->rx_ring;
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+ struct device *dev = enet->dev;
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+ int err;
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+
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@ -283,16 +284,16 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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+ err = bcm4908_dma_alloc_buf_descs(enet, rx_ring);
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+ if (err) {
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+ dev_err(dev, "Failed to alloc RX buf descriptors: %d\n", err);
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+ bcm4908enet_dma_free(enet);
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+ bcm4908_enet_dma_free(enet);
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+ return err;
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+ }
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+
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+ return 0;
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+}
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+
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+static void bcm4908enet_dma_reset(struct bcm4908enet *enet)
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+static void bcm4908_enet_dma_reset(struct bcm4908_enet *enet)
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+{
|
||||
+ struct bcm4908enet_dma_ring *rings[] = { &enet->rx_ring, &enet->tx_ring };
|
||||
+ struct bcm4908_enet_dma_ring *rings[] = { &enet->rx_ring, &enet->tx_ring };
|
||||
+ int i;
|
||||
+
|
||||
+ /* Disable the DMA controller and channel */
|
||||
@ -302,7 +303,7 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
|
||||
+
|
||||
+ /* Reset channels state */
|
||||
+ for (i = 0; i < ARRAY_SIZE(rings); i++) {
|
||||
+ struct bcm4908enet_dma_ring *ring = rings[i];
|
||||
+ struct bcm4908_enet_dma_ring *ring = rings[i];
|
||||
+
|
||||
+ enet_write(enet, ring->st_ram_block + ENET_DMA_CH_STATE_RAM_BASE_DESC_PTR, 0);
|
||||
+ enet_write(enet, ring->st_ram_block + ENET_DMA_CH_STATE_RAM_STATE_DATA, 0);
|
||||
@ -311,10 +312,10 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
|
||||
+ }
|
||||
+}
|
||||
+
|
||||
+static int bcm4908enet_dma_alloc_rx_buf(struct bcm4908enet *enet, unsigned int idx)
|
||||
+static int bcm4908_enet_dma_alloc_rx_buf(struct bcm4908_enet *enet, unsigned int idx)
|
||||
+{
|
||||
+ struct bcm4908enet_dma_ring_bd *buf_desc = &enet->rx_ring.buf_desc[idx];
|
||||
+ struct bcm4908enet_dma_ring_slot *slot = &enet->rx_ring.slots[idx];
|
||||
+ struct bcm4908_enet_dma_ring_bd *buf_desc = &enet->rx_ring.buf_desc[idx];
|
||||
+ struct bcm4908_enet_dma_ring_slot *slot = &enet->rx_ring.slots[idx];
|
||||
+ struct device *dev = enet->dev;
|
||||
+ u32 tmp;
|
||||
+ int err;
|
||||
@ -344,8 +345,8 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+static void bcm4908enet_dma_ring_init(struct bcm4908enet *enet,
|
||||
+ struct bcm4908enet_dma_ring *ring)
|
||||
+static void bcm4908_enet_dma_ring_init(struct bcm4908_enet *enet,
|
||||
+ struct bcm4908_enet_dma_ring *ring)
|
||||
+{
|
||||
+ int reset_channel = 0; /* We support only 1 main channel (with TX and RX) */
|
||||
+ int reset_subch = ring->is_tx ? 1 : 0;
|
||||
@ -362,10 +363,10 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
|
||||
+ (uint32_t)ring->dma_addr);
|
||||
+}
|
||||
+
|
||||
+static void bcm4908enet_dma_uninit(struct bcm4908enet *enet)
|
||||
+static void bcm4908_enet_dma_uninit(struct bcm4908_enet *enet)
|
||||
+{
|
||||
+ struct bcm4908enet_dma_ring *rx_ring = &enet->rx_ring;
|
||||
+ struct bcm4908enet_dma_ring_slot *slot;
|
||||
+ struct bcm4908_enet_dma_ring *rx_ring = &enet->rx_ring;
|
||||
+ struct bcm4908_enet_dma_ring_slot *slot;
|
||||
+ struct device *dev = enet->dev;
|
||||
+ int i;
|
||||
+
|
||||
@ -379,48 +380,48 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
|
||||
+ }
|
||||
+}
|
||||
+
|
||||
+static int bcm4908enet_dma_init(struct bcm4908enet *enet)
|
||||
+static int bcm4908_enet_dma_init(struct bcm4908_enet *enet)
|
||||
+{
|
||||
+ struct bcm4908enet_dma_ring *rx_ring = &enet->rx_ring;
|
||||
+ struct bcm4908_enet_dma_ring *rx_ring = &enet->rx_ring;
|
||||
+ struct device *dev = enet->dev;
|
||||
+ int err;
|
||||
+ int i;
|
||||
+
|
||||
+ for (i = 0; i < rx_ring->length; i++) {
|
||||
+ err = bcm4908enet_dma_alloc_rx_buf(enet, i);
|
||||
+ err = bcm4908_enet_dma_alloc_rx_buf(enet, i);
|
||||
+ if (err) {
|
||||
+ dev_err(dev, "Failed to alloc RX buffer: %d\n", err);
|
||||
+ bcm4908enet_dma_uninit(enet);
|
||||
+ bcm4908_enet_dma_uninit(enet);
|
||||
+ return err;
|
||||
+ }
|
||||
+ }
|
||||
+
|
||||
+ bcm4908enet_dma_ring_init(enet, &enet->tx_ring);
|
||||
+ bcm4908enet_dma_ring_init(enet, &enet->rx_ring);
|
||||
+ bcm4908_enet_dma_ring_init(enet, &enet->tx_ring);
|
||||
+ bcm4908_enet_dma_ring_init(enet, &enet->rx_ring);
|
||||
+
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+static void bcm4908enet_dma_tx_ring_ensable(struct bcm4908enet *enet,
|
||||
+ struct bcm4908enet_dma_ring *ring)
|
||||
+static void bcm4908_enet_dma_tx_ring_enable(struct bcm4908_enet *enet,
|
||||
+ struct bcm4908_enet_dma_ring *ring)
|
||||
+{
|
||||
+ enet_write(enet, ring->cfg_block + ENET_DMA_CH_CFG, ENET_DMA_CH_CFG_ENABLE);
|
||||
+}
|
||||
+
|
||||
+static void bcm4908enet_dma_tx_ring_disable(struct bcm4908enet *enet,
|
||||
+ struct bcm4908enet_dma_ring *ring)
|
||||
+static void bcm4908_enet_dma_tx_ring_disable(struct bcm4908_enet *enet,
|
||||
+ struct bcm4908_enet_dma_ring *ring)
|
||||
+{
|
||||
+ enet_write(enet, ring->cfg_block + ENET_DMA_CH_CFG, 0);
|
||||
+}
|
||||
+
|
||||
+static void bcm4908enet_dma_rx_ring_enable(struct bcm4908enet *enet,
|
||||
+ struct bcm4908enet_dma_ring *ring)
|
||||
+static void bcm4908_enet_dma_rx_ring_enable(struct bcm4908_enet *enet,
|
||||
+ struct bcm4908_enet_dma_ring *ring)
|
||||
+{
|
||||
+ enet_set(enet, ring->cfg_block + ENET_DMA_CH_CFG, ENET_DMA_CH_CFG_ENABLE);
|
||||
+}
|
||||
+
|
||||
+static void bcm4908enet_dma_rx_ring_disable(struct bcm4908enet *enet,
|
||||
+ struct bcm4908enet_dma_ring *ring)
|
||||
+static void bcm4908_enet_dma_rx_ring_disable(struct bcm4908_enet *enet,
|
||||
+ struct bcm4908_enet_dma_ring *ring)
|
||||
+{
|
||||
+ unsigned long deadline;
|
||||
+ u32 tmp;
|
||||
@ -443,7 +444,7 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
|
||||
+ * Ethernet driver
|
||||
+ */
|
||||
+
|
||||
+static void bcm4908enet_gmac_init(struct bcm4908enet *enet)
|
||||
+static void bcm4908_enet_gmac_init(struct bcm4908_enet *enet)
|
||||
+{
|
||||
+ u32 cmd;
|
||||
+
|
||||
@ -474,82 +475,82 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
|
||||
+ ENET_GMAC_STATUS_LINK_UP);
|
||||
+}
|
||||
+
|
||||
+static irqreturn_t bcm4908enet_irq_handler(int irq, void *dev_id)
|
||||
+static irqreturn_t bcm4908_enet_irq_handler(int irq, void *dev_id)
|
||||
+{
|
||||
+ struct bcm4908enet *enet = dev_id;
|
||||
+ struct bcm4908_enet *enet = dev_id;
|
||||
+
|
||||
+ bcm4908enet_intrs_off(enet);
|
||||
+ bcm4908enet_intrs_ack(enet);
|
||||
+ bcm4908_enet_intrs_off(enet);
|
||||
+ bcm4908_enet_intrs_ack(enet);
|
||||
+
|
||||
+ napi_schedule(&enet->napi);
|
||||
+
|
||||
+ return IRQ_HANDLED;
|
||||
+}
|
||||
+
|
||||
+static int bcm4908enet_open(struct net_device *netdev)
|
||||
+static int bcm4908_enet_open(struct net_device *netdev)
|
||||
+{
|
||||
+ struct bcm4908enet *enet = netdev_priv(netdev);
|
||||
+ struct bcm4908_enet *enet = netdev_priv(netdev);
|
||||
+ struct device *dev = enet->dev;
|
||||
+ int err;
|
||||
+
|
||||
+ err = request_irq(netdev->irq, bcm4908enet_irq_handler, 0, "enet", enet);
|
||||
+ err = request_irq(netdev->irq, bcm4908_enet_irq_handler, 0, "enet", enet);
|
||||
+ if (err) {
|
||||
+ dev_err(dev, "Failed to request IRQ %d: %d\n", netdev->irq, err);
|
||||
+ return err;
|
||||
+ }
|
||||
+
|
||||
+ bcm4908enet_gmac_init(enet);
|
||||
+ bcm4908enet_dma_reset(enet);
|
||||
+ bcm4908enet_dma_init(enet);
|
||||
+ bcm4908_enet_gmac_init(enet);
|
||||
+ bcm4908_enet_dma_reset(enet);
|
||||
+ bcm4908_enet_dma_init(enet);
|
||||
+
|
||||
+ enet_umac_set(enet, UMAC_CMD, CMD_TX_EN | CMD_RX_EN);
|
||||
+
|
||||
+ enet_set(enet, ENET_DMA_CONTROLLER_CFG, ENET_DMA_CTRL_CFG_MASTER_EN);
|
||||
+ enet_maskset(enet, ENET_DMA_CONTROLLER_CFG, ENET_DMA_CTRL_CFG_FLOWC_CH1_EN, 0);
|
||||
+ bcm4908enet_dma_rx_ring_enable(enet, &enet->rx_ring);
|
||||
+ bcm4908_enet_dma_rx_ring_enable(enet, &enet->rx_ring);
|
||||
+
|
||||
+ napi_enable(&enet->napi);
|
||||
+ netif_carrier_on(netdev);
|
||||
+ netif_start_queue(netdev);
|
||||
+
|
||||
+ bcm4908enet_intrs_ack(enet);
|
||||
+ bcm4908enet_intrs_on(enet);
|
||||
+ bcm4908_enet_intrs_ack(enet);
|
||||
+ bcm4908_enet_intrs_on(enet);
|
||||
+
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+static int bcm4908enet_stop(struct net_device *netdev)
|
||||
+static int bcm4908_enet_stop(struct net_device *netdev)
|
||||
+{
|
||||
+ struct bcm4908enet *enet = netdev_priv(netdev);
|
||||
+ struct bcm4908_enet *enet = netdev_priv(netdev);
|
||||
+
|
||||
+ netif_stop_queue(netdev);
|
||||
+ netif_carrier_off(netdev);
|
||||
+ napi_disable(&enet->napi);
|
||||
+
|
||||
+ bcm4908enet_dma_rx_ring_disable(enet, &enet->rx_ring);
|
||||
+ bcm4908enet_dma_tx_ring_disable(enet, &enet->tx_ring);
|
||||
+ bcm4908_enet_dma_rx_ring_disable(enet, &enet->rx_ring);
|
||||
+ bcm4908_enet_dma_tx_ring_disable(enet, &enet->tx_ring);
|
||||
+
|
||||
+ bcm4908enet_dma_uninit(enet);
|
||||
+ bcm4908_enet_dma_uninit(enet);
|
||||
+
|
||||
+ free_irq(enet->netdev->irq, enet);
|
||||
+
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+static int bcm4908enet_start_xmit(struct sk_buff *skb, struct net_device *netdev)
|
||||
+static int bcm4908_enet_start_xmit(struct sk_buff *skb, struct net_device *netdev)
|
||||
+{
|
||||
+ struct bcm4908enet *enet = netdev_priv(netdev);
|
||||
+ struct bcm4908enet_dma_ring *ring = &enet->tx_ring;
|
||||
+ struct bcm4908enet_dma_ring_slot *slot;
|
||||
+ struct bcm4908_enet *enet = netdev_priv(netdev);
|
||||
+ struct bcm4908_enet_dma_ring *ring = &enet->tx_ring;
|
||||
+ struct bcm4908_enet_dma_ring_slot *slot;
|
||||
+ struct device *dev = enet->dev;
|
||||
+ struct bcm4908enet_dma_ring_bd *buf_desc;
|
||||
+ struct bcm4908_enet_dma_ring_bd *buf_desc;
|
||||
+ int free_buf_descs;
|
||||
+ u32 tmp;
|
||||
+
|
||||
+ /* Free transmitted skbs */
|
||||
+ while (ring->read_idx != ring->write_idx) {
|
||||
+ buf_desc = &ring->buf_desc[ring->read_idx];
|
||||
+ if (buf_desc->ctl & DMA_CTL_STATUS_OWN)
|
||||
+ if (le32_to_cpu(buf_desc->ctl) & DMA_CTL_STATUS_OWN)
|
||||
+ break;
|
||||
+ slot = &ring->slots[ring->read_idx];
|
||||
+
|
||||
@ -592,7 +593,7 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
|
||||
+ buf_desc->addr = cpu_to_le32((uint32_t)slot->dma_addr);
|
||||
+ buf_desc->ctl = cpu_to_le32(tmp);
|
||||
+
|
||||
+ bcm4908enet_dma_tx_ring_ensable(enet, &enet->tx_ring);
|
||||
+ bcm4908_enet_dma_tx_ring_enable(enet, &enet->tx_ring);
|
||||
+
|
||||
+ if (++ring->write_idx == ring->length - 1)
|
||||
+ ring->write_idx = 0;
|
||||
@ -602,15 +603,15 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
|
||||
+ return NETDEV_TX_OK;
|
||||
+}
|
||||
+
|
||||
+static int bcm4908enet_poll(struct napi_struct *napi, int weight)
|
||||
+static int bcm4908_enet_poll(struct napi_struct *napi, int weight)
|
||||
+{
|
||||
+ struct bcm4908enet *enet = container_of(napi, struct bcm4908enet, napi);
|
||||
+ struct bcm4908_enet *enet = container_of(napi, struct bcm4908_enet, napi);
|
||||
+ struct device *dev = enet->dev;
|
||||
+ int handled = 0;
|
||||
+
|
||||
+ while (handled < weight) {
|
||||
+ struct bcm4908enet_dma_ring_bd *buf_desc;
|
||||
+ struct bcm4908enet_dma_ring_slot slot;
|
||||
+ struct bcm4908_enet_dma_ring_bd *buf_desc;
|
||||
+ struct bcm4908_enet_dma_ring_slot slot;
|
||||
+ u32 ctl;
|
||||
+ int len;
|
||||
+ int err;
|
||||
@ -623,7 +624,7 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
|
||||
+ slot = enet->rx_ring.slots[enet->rx_ring.read_idx];
|
||||
+
|
||||
+ /* Provide new buffer before unpinning the old one */
|
||||
+ err = bcm4908enet_dma_alloc_rx_buf(enet, enet->rx_ring.read_idx);
|
||||
+ err = bcm4908_enet_dma_alloc_rx_buf(enet, enet->rx_ring.read_idx);
|
||||
+ if (err)
|
||||
+ break;
|
||||
+
|
||||
@ -634,13 +635,14 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
|
||||
+
|
||||
+ if (len < ENET_MTU_MIN ||
|
||||
+ (ctl & (DMA_CTL_STATUS_SOP | DMA_CTL_STATUS_EOP)) != (DMA_CTL_STATUS_SOP | DMA_CTL_STATUS_EOP)) {
|
||||
+ kfree(slot.skb);
|
||||
+ enet->netdev->stats.rx_dropped++;
|
||||
+ break;
|
||||
+ }
|
||||
+
|
||||
+ dma_unmap_single(dev, slot.dma_addr, slot.len, DMA_FROM_DEVICE);
|
||||
+
|
||||
+ skb_put(slot.skb, len - 4 + 2);
|
||||
+ skb_put(slot.skb, len - ETH_FCS_LEN);
|
||||
+ slot.skb->protocol = eth_type_trans(slot.skb, enet->netdev);
|
||||
+ netif_receive_skb(slot.skb);
|
||||
+
|
||||
@ -650,24 +652,24 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
|
||||
+
|
||||
+ if (handled < weight) {
|
||||
+ napi_complete_done(napi, handled);
|
||||
+ bcm4908enet_intrs_on(enet);
|
||||
+ bcm4908_enet_intrs_on(enet);
|
||||
+ }
|
||||
+
|
||||
+ return handled;
|
||||
+}
|
||||
+
|
||||
+static const struct net_device_ops bcm96xx_netdev_ops = {
|
||||
+ .ndo_open = bcm4908enet_open,
|
||||
+ .ndo_stop = bcm4908enet_stop,
|
||||
+ .ndo_start_xmit = bcm4908enet_start_xmit,
|
||||
+static const struct net_device_ops bcm4908_enet_netdev_ops = {
|
||||
+ .ndo_open = bcm4908_enet_open,
|
||||
+ .ndo_stop = bcm4908_enet_stop,
|
||||
+ .ndo_start_xmit = bcm4908_enet_start_xmit,
|
||||
+ .ndo_set_mac_address = eth_mac_addr,
|
||||
+};
|
||||
+
|
||||
+static int bcm4908enet_probe(struct platform_device *pdev)
|
||||
+static int bcm4908_enet_probe(struct platform_device *pdev)
|
||||
+{
|
||||
+ struct device *dev = &pdev->dev;
|
||||
+ struct net_device *netdev;
|
||||
+ struct bcm4908enet *enet;
|
||||
+ struct bcm4908_enet *enet;
|
||||
+ int err;
|
||||
+
|
||||
+ netdev = devm_alloc_etherdev(dev, sizeof(*enet));
|
||||
@ -684,27 +686,27 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
|
||||
+ return PTR_ERR(enet->base);
|
||||
+ }
|
||||
+
|
||||
+ netdev->irq = platform_get_irq_byname(pdev, "rx");
|
||||
+ netdev->irq = platform_get_irq(pdev, 0);
|
||||
+ if (netdev->irq < 0)
|
||||
+ return netdev->irq;
|
||||
+
|
||||
+ dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
|
||||
+
|
||||
+ err = bcm4908enet_dma_alloc(enet);
|
||||
+ err = bcm4908_enet_dma_alloc(enet);
|
||||
+ if (err)
|
||||
+ return err;
|
||||
+
|
||||
+ SET_NETDEV_DEV(netdev, &pdev->dev);
|
||||
+ eth_hw_addr_random(netdev);
|
||||
+ netdev->netdev_ops = &bcm96xx_netdev_ops;
|
||||
+ netdev->netdev_ops = &bcm4908_enet_netdev_ops;
|
||||
+ netdev->min_mtu = ETH_ZLEN;
|
||||
+ netdev->mtu = ENET_MTU_MAX;
|
||||
+ netdev->max_mtu = ENET_MTU_MAX;
|
||||
+ netif_napi_add(netdev, &enet->napi, bcm4908enet_poll, 64);
|
||||
+ netif_napi_add(netdev, &enet->napi, bcm4908_enet_poll, 64);
|
||||
+
|
||||
+ err = register_netdev(netdev);
|
||||
+ if (err) {
|
||||
+ bcm4908enet_dma_free(enet);
|
||||
+ bcm4908_enet_dma_free(enet);
|
||||
+ return err;
|
||||
+ }
|
||||
+
|
||||
@ -713,40 +715,40 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+static int bcm4908enet_remove(struct platform_device *pdev)
|
||||
+static int bcm4908_enet_remove(struct platform_device *pdev)
|
||||
+{
|
||||
+ struct bcm4908enet *enet = platform_get_drvdata(pdev);
|
||||
+ struct bcm4908_enet *enet = platform_get_drvdata(pdev);
|
||||
+
|
||||
+ unregister_netdev(enet->netdev);
|
||||
+ netif_napi_del(&enet->napi);
|
||||
+ bcm4908enet_dma_free(enet);
|
||||
+ bcm4908_enet_dma_free(enet);
|
||||
+
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+static const struct of_device_id bcm4908enet_of_match[] = {
|
||||
+ { .compatible = "brcm,bcm4908enet"},
|
||||
+static const struct of_device_id bcm4908_enet_of_match[] = {
|
||||
+ { .compatible = "brcm,bcm4908-enet"},
|
||||
+ {},
|
||||
+};
|
||||
+
|
||||
+static struct platform_driver bcm4908enet_driver = {
|
||||
+static struct platform_driver bcm4908_enet_driver = {
|
||||
+ .driver = {
|
||||
+ .name = "bcm4908enet",
|
||||
+ .of_match_table = bcm4908enet_of_match,
|
||||
+ .name = "bcm4908_enet",
|
||||
+ .of_match_table = bcm4908_enet_of_match,
|
||||
+ },
|
||||
+ .probe = bcm4908enet_probe,
|
||||
+ .remove = bcm4908enet_remove,
|
||||
+ .probe = bcm4908_enet_probe,
|
||||
+ .remove = bcm4908_enet_remove,
|
||||
+};
|
||||
+module_platform_driver(bcm4908enet_driver);
|
||||
+module_platform_driver(bcm4908_enet_driver);
|
||||
+
|
||||
+MODULE_LICENSE("GPL v2");
|
||||
+MODULE_DEVICE_TABLE(of, bcm4908enet_of_match);
|
||||
+MODULE_DEVICE_TABLE(of, bcm4908_enet_of_match);
|
||||
--- /dev/null
|
||||
+++ b/drivers/net/ethernet/broadcom/bcm4908enet.h
|
||||
+++ b/drivers/net/ethernet/broadcom/bcm4908_enet.h
|
||||
@@ -0,0 +1,96 @@
|
||||
+/* SPDX-License-Identifier: GPL-2.0-only */
|
||||
+#ifndef __BCM4908ENET_H
|
||||
+#define __BCM4908ENET_H
|
||||
+#ifndef __BCM4908_ENET_H
|
||||
+#define __BCM4908_ENET_H
|
||||
+
|
||||
+#define ENET_CONTROL 0x000
|
||||
+#define ENET_MIB_CTRL 0x004
|
||||
@ -10,40 +10,38 @@ BCM4908 SoCs have an integrated Ethernet controller.
|
||||
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
|
||||
---
|
||||
|
||||
--- a/arch/arm64/boot/dts/broadcom/bcm4908/bcm4908-asus-gt-ac5300.dts
|
||||
+++ b/arch/arm64/boot/dts/broadcom/bcm4908/bcm4908-asus-gt-ac5300.dts
|
||||
@@ -87,6 +87,17 @@
|
||||
full-duplex;
|
||||
};
|
||||
};
|
||||
+
|
||||
+ port@8 {
|
||||
+ reg = <8>;
|
||||
+ phy-mode = "internal";
|
||||
+ brcm,use-bcm-hdr;
|
||||
+ ethernet = <&gmac>;
|
||||
+ fixed-link {
|
||||
+ speed = <1000>;
|
||||
+ full-duplex;
|
||||
+ };
|
||||
+ };
|
||||
};
|
||||
|
||||
&mdio {
|
||||
--- a/arch/arm64/boot/dts/broadcom/bcm4908/bcm4908.dtsi
|
||||
+++ b/arch/arm64/boot/dts/broadcom/bcm4908/bcm4908.dtsi
|
||||
@@ -112,6 +112,14 @@
|
||||
@@ -112,6 +112,13 @@
|
||||
#size-cells = <1>;
|
||||
ranges = <0x00 0x00 0x80000000 0x281000>;
|
||||
|
||||
+ gmac: ethernet@2000 {
|
||||
+ compatible = "brcm,bcm4908enet";
|
||||
+ enet: ethernet@2000 {
|
||||
+ compatible = "brcm,bcm4908-enet";
|
||||
+ reg = <0x2000 0x1000>;
|
||||
+
|
||||
+ interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>;
|
||||
+ interrupt-names = "rx";
|
||||
+ };
|
||||
+
|
||||
usb_phy: usb-phy@c200 {
|
||||
compatible = "brcm,bcm4908-usb-phy";
|
||||
reg = <0xc200 0x100>;
|
||||
@@ -199,6 +206,18 @@
|
||||
phy-mode = "internal";
|
||||
phy-handle = <&phy11>;
|
||||
};
|
||||
+
|
||||
+ port@8 {
|
||||
+ reg = <8>;
|
||||
+ phy-mode = "internal";
|
||||
+ brcm,use-bcm-hdr;
|
||||
+ ethernet = <&enet>;
|
||||
+
|
||||
+ fixed-link {
|
||||
+ speed = <1000>;
|
||||
+ full-duplex;
|
||||
+ };
|
||||
+ };
|
||||
};
|
||||
};
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user