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@@ -1,21 +1,28 @@
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <[email protected]>
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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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+
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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 <[email protected]>
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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 <[email protected]>
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+M: [email protected]
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+L: [email protected]
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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 <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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@@ -79,7 +86,7 @@ Signed-off-by: Rafał Miłecki <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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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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+{
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-+ struct bcm4908enet_dma_ring *rings[] = { &enet->rx_ring, &enet->tx_ring };
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++ struct bcm4908_enet_dma_ring *rings[] = { &enet->rx_ring, &enet->tx_ring };
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+ int i;
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+
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+ /* Disable the DMA controller and channel */
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@@ -302,7 +303,7 @@ Signed-off-by: Rafał Miłecki <[email protected]>
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+
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+ /* Reset channels state */
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+ for (i = 0; i < ARRAY_SIZE(rings); i++) {
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-+ struct bcm4908enet_dma_ring *ring = rings[i];
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++ struct bcm4908_enet_dma_ring *ring = rings[i];
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+
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+ enet_write(enet, ring->st_ram_block + ENET_DMA_CH_STATE_RAM_BASE_DESC_PTR, 0);
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+ enet_write(enet, ring->st_ram_block + ENET_DMA_CH_STATE_RAM_STATE_DATA, 0);
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@@ -311,10 +312,10 @@ Signed-off-by: Rafał Miłecki <[email protected]>
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+ }
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+}
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+
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-+static int bcm4908enet_dma_alloc_rx_buf(struct bcm4908enet *enet, unsigned int idx)
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++static int bcm4908_enet_dma_alloc_rx_buf(struct bcm4908_enet *enet, unsigned int idx)
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+{
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-+ struct bcm4908enet_dma_ring_bd *buf_desc = &enet->rx_ring.buf_desc[idx];
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-+ struct bcm4908enet_dma_ring_slot *slot = &enet->rx_ring.slots[idx];
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++ struct bcm4908_enet_dma_ring_bd *buf_desc = &enet->rx_ring.buf_desc[idx];
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++ struct bcm4908_enet_dma_ring_slot *slot = &enet->rx_ring.slots[idx];
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+ struct device *dev = enet->dev;
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+ u32 tmp;
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+ int err;
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@@ -344,8 +345,8 @@ Signed-off-by: Rafał Miłecki <[email protected]>
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+ return 0;
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+}
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+
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-+static void bcm4908enet_dma_ring_init(struct bcm4908enet *enet,
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-+ struct bcm4908enet_dma_ring *ring)
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++static void bcm4908_enet_dma_ring_init(struct bcm4908_enet *enet,
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++ struct bcm4908_enet_dma_ring *ring)
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+{
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+ int reset_channel = 0; /* We support only 1 main channel (with TX and RX) */
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+ int reset_subch = ring->is_tx ? 1 : 0;
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@@ -362,10 +363,10 @@ Signed-off-by: Rafał Miłecki <[email protected]>
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+ (uint32_t)ring->dma_addr);
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+}
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+
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-+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 <[email protected]>
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
-+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 <[email protected]>
|
|
|
+ * 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 <[email protected]>
|
|
|
+ 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 <[email protected]>
|
|
|
+ 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 <[email protected]>
|
|
|
+ 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 <[email protected]>
|
|
|
+ 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 <[email protected]>
|
|
|
+
|
|
|
+ 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 <[email protected]>
|
|
|
+
|
|
|
+ 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 <[email protected]>
|
|
|
+ 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 <[email protected]>
|
|
|
+ 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 = {
|
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+ .driver = {
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-+ .name = "bcm4908enet",
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-+ .of_match_table = bcm4908enet_of_match,
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++ .name = "bcm4908_enet",
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++ .of_match_table = bcm4908_enet_of_match,
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+ },
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-+ .probe = bcm4908enet_probe,
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-+ .remove = bcm4908enet_remove,
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++ .probe = bcm4908_enet_probe,
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++ .remove = bcm4908_enet_remove,
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+};
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-+module_platform_driver(bcm4908enet_driver);
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++module_platform_driver(bcm4908_enet_driver);
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+
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+MODULE_LICENSE("GPL v2");
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-+MODULE_DEVICE_TABLE(of, bcm4908enet_of_match);
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++MODULE_DEVICE_TABLE(of, bcm4908_enet_of_match);
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--- /dev/null
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-+++ b/drivers/net/ethernet/broadcom/bcm4908enet.h
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++++ b/drivers/net/ethernet/broadcom/bcm4908_enet.h
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@@ -0,0 +1,96 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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-+#ifndef __BCM4908ENET_H
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-+#define __BCM4908ENET_H
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++#ifndef __BCM4908_ENET_H
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++#define __BCM4908_ENET_H
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+
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+#define ENET_CONTROL 0x000
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+#define ENET_MIB_CTRL 0x004
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Rafał Miłecki