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1950 lines
60 KiB
1950 lines
60 KiB
From dd4544f05469aaaeee891d7dc54d66430344321e Mon Sep 17 00:00:00 2001
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From: =?utf8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
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Date: Tue, 8 Jan 2013 20:06:23 +0000
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Subject: [PATCH] bgmac: driver for GBit MAC core on BCMA bus
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MIME-Version: 1.0
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Content-Type: text/plain; charset=utf8
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Content-Transfer-Encoding: 8bit
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BCMA is a Broadcom specific bus with devices AKA cores. All recent BCMA
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based SoCs have gigabit ethernet provided by the GBit MAC core. This
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patch adds driver for such a cores registering itself as a netdev. It
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has been tested on a BCM4706 and BCM4718 chipsets.
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In the kernel tree there is already b44 driver which has some common
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things with bgmac, however there are many differences that has led to
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the decision or writing a new driver:
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1) GBit MAC cores appear on BCMA bus (not SSB as in case of b44)
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2) There is 64bit DMA engine which differs from 32bit one
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3) There is no CAM (Content Addressable Memory) in GBit MAC
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4) We have 4 TX queues on GBit MAC devices (instead of 1)
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5) Many registers have different addresses/values
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6) RX header flags are also different
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The driver in it's state is functional how, however there is of course
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place for improvements:
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1) Supporting more net_device_ops
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2) SUpporting more ethtool_ops
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3) Unaligned addressing in DMA
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4) Writing separated PHY driver
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Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/bcma/driver_chipcommon_pmu.c | 3 +-
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drivers/net/ethernet/broadcom/Kconfig | 9 +
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drivers/net/ethernet/broadcom/Makefile | 1 +
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drivers/net/ethernet/broadcom/bgmac.c | 1422 +++++++++++++++++++++++++++
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drivers/net/ethernet/broadcom/bgmac.h | 456 +++++++++
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include/linux/bcma/bcma_driver_chipcommon.h | 2 +
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6 files changed, 1892 insertions(+), 1 deletions(-)
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create mode 100644 drivers/net/ethernet/broadcom/bgmac.c
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create mode 100644 drivers/net/ethernet/broadcom/bgmac.h
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--- a/drivers/net/ethernet/broadcom/Kconfig
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+++ b/drivers/net/ethernet/broadcom/Kconfig
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@@ -121,4 +121,13 @@ config BNX2X
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To compile this driver as a module, choose M here: the module
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will be called bnx2x. This is recommended.
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+config BGMAC
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+ tristate "BCMA bus GBit core support"
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+ depends on BCMA_HOST_SOC && HAS_DMA
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+ ---help---
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+ This driver supports GBit MAC and BCM4706 GBit MAC cores on BCMA bus.
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+ They can be found on BCM47xx SoCs and provide gigabit ethernet.
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+ In case of using this driver on BCM4706 it's also requires to enable
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+ BCMA_DRIVER_GMAC_CMN to make it work.
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+
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endif # NET_VENDOR_BROADCOM
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--- a/drivers/net/ethernet/broadcom/Makefile
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+++ b/drivers/net/ethernet/broadcom/Makefile
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@@ -9,3 +9,4 @@ obj-$(CONFIG_CNIC) += cnic.o
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obj-$(CONFIG_BNX2X) += bnx2x/
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obj-$(CONFIG_SB1250_MAC) += sb1250-mac.o
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obj-$(CONFIG_TIGON3) += tg3.o
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+obj-$(CONFIG_BGMAC) += bgmac.o
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--- /dev/null
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+++ b/drivers/net/ethernet/broadcom/bgmac.c
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@@ -0,0 +1,1422 @@
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+/*
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+ * Driver for (BCM4706)? GBit MAC core on BCMA bus.
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+ *
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+ * Copyright (C) 2012 Rafał Miłecki <zajec5@gmail.com>
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+ *
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+ * Licensed under the GNU/GPL. See COPYING for details.
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+ */
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+
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+#include "bgmac.h"
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+
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+#include <linux/kernel.h>
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+#include <linux/module.h>
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+#include <linux/delay.h>
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+#include <linux/etherdevice.h>
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+#include <linux/mii.h>
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+#include <linux/interrupt.h>
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+#include <linux/dma-mapping.h>
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+#include <bcm47xx_nvram.h>
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+
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+static const struct bcma_device_id bgmac_bcma_tbl[] = {
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+ BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_4706_MAC_GBIT, BCMA_ANY_REV, BCMA_ANY_CLASS),
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+ BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_MAC_GBIT, BCMA_ANY_REV, BCMA_ANY_CLASS),
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+ BCMA_CORETABLE_END
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+};
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+MODULE_DEVICE_TABLE(bcma, bgmac_bcma_tbl);
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+
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+static bool bgmac_wait_value(struct bcma_device *core, u16 reg, u32 mask,
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+ u32 value, int timeout)
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+{
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+ u32 val;
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+ int i;
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+
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+ for (i = 0; i < timeout / 10; i++) {
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+ val = bcma_read32(core, reg);
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+ if ((val & mask) == value)
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+ return true;
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+ udelay(10);
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+ }
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+ pr_err("Timeout waiting for reg 0x%X\n", reg);
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+ return false;
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+}
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+
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+/**************************************************
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+ * DMA
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+ **************************************************/
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+
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+static void bgmac_dma_tx_reset(struct bgmac *bgmac, struct bgmac_dma_ring *ring)
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+{
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+ u32 val;
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+ int i;
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+
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+ if (!ring->mmio_base)
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+ return;
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+
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+ /* Suspend DMA TX ring first.
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+ * bgmac_wait_value doesn't support waiting for any of few values, so
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+ * implement whole loop here.
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+ */
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+ bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_CTL,
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+ BGMAC_DMA_TX_SUSPEND);
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+ for (i = 0; i < 10000 / 10; i++) {
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+ val = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_STATUS);
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+ val &= BGMAC_DMA_TX_STAT;
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+ if (val == BGMAC_DMA_TX_STAT_DISABLED ||
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+ val == BGMAC_DMA_TX_STAT_IDLEWAIT ||
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+ val == BGMAC_DMA_TX_STAT_STOPPED) {
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+ i = 0;
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+ break;
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+ }
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+ udelay(10);
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+ }
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+ if (i)
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+ bgmac_err(bgmac, "Timeout suspending DMA TX ring 0x%X (BGMAC_DMA_TX_STAT: 0x%08X)\n",
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+ ring->mmio_base, val);
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+
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+ /* Remove SUSPEND bit */
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+ bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_CTL, 0);
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+ if (!bgmac_wait_value(bgmac->core,
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+ ring->mmio_base + BGMAC_DMA_TX_STATUS,
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+ BGMAC_DMA_TX_STAT, BGMAC_DMA_TX_STAT_DISABLED,
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+ 10000)) {
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+ bgmac_warn(bgmac, "DMA TX ring 0x%X wasn't disabled on time, waiting additional 300us\n",
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+ ring->mmio_base);
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+ udelay(300);
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+ val = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_STATUS);
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+ if ((val & BGMAC_DMA_TX_STAT) != BGMAC_DMA_TX_STAT_DISABLED)
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+ bgmac_err(bgmac, "Reset of DMA TX ring 0x%X failed\n",
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+ ring->mmio_base);
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+ }
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+}
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+
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+static void bgmac_dma_tx_enable(struct bgmac *bgmac,
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+ struct bgmac_dma_ring *ring)
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+{
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+ u32 ctl;
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+
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+ ctl = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_CTL);
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+ ctl |= BGMAC_DMA_TX_ENABLE;
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+ ctl |= BGMAC_DMA_TX_PARITY_DISABLE;
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+ bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_CTL, ctl);
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+}
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+
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+static netdev_tx_t bgmac_dma_tx_add(struct bgmac *bgmac,
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+ struct bgmac_dma_ring *ring,
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+ struct sk_buff *skb)
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+{
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+ struct device *dma_dev = bgmac->core->dma_dev;
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+ struct net_device *net_dev = bgmac->net_dev;
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+ struct bgmac_dma_desc *dma_desc;
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+ struct bgmac_slot_info *slot;
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+ u32 ctl0, ctl1;
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+ int free_slots;
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+
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+ if (skb->len > BGMAC_DESC_CTL1_LEN) {
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+ bgmac_err(bgmac, "Too long skb (%d)\n", skb->len);
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+ goto err_stop_drop;
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+ }
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+
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+ if (ring->start <= ring->end)
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+ free_slots = ring->start - ring->end + BGMAC_TX_RING_SLOTS;
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+ else
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+ free_slots = ring->start - ring->end;
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+ if (free_slots == 1) {
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+ bgmac_err(bgmac, "TX ring is full, queue should be stopped!\n");
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+ netif_stop_queue(net_dev);
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+ return NETDEV_TX_BUSY;
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+ }
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+
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+ slot = &ring->slots[ring->end];
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+ slot->skb = skb;
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+ slot->dma_addr = dma_map_single(dma_dev, skb->data, skb->len,
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+ DMA_TO_DEVICE);
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+ if (dma_mapping_error(dma_dev, slot->dma_addr)) {
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+ bgmac_err(bgmac, "Mapping error of skb on ring 0x%X\n",
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+ ring->mmio_base);
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+ goto err_stop_drop;
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+ }
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+
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+ ctl0 = BGMAC_DESC_CTL0_IOC | BGMAC_DESC_CTL0_SOF | BGMAC_DESC_CTL0_EOF;
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+ if (ring->end == ring->num_slots - 1)
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+ ctl0 |= BGMAC_DESC_CTL0_EOT;
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+ ctl1 = skb->len & BGMAC_DESC_CTL1_LEN;
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+
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+ dma_desc = ring->cpu_base;
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+ dma_desc += ring->end;
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+ dma_desc->addr_low = cpu_to_le32(lower_32_bits(slot->dma_addr));
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+ dma_desc->addr_high = cpu_to_le32(upper_32_bits(slot->dma_addr));
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+ dma_desc->ctl0 = cpu_to_le32(ctl0);
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+ dma_desc->ctl1 = cpu_to_le32(ctl1);
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+
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+ wmb();
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+
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+ /* Increase ring->end to point empty slot. We tell hardware the first
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+ * slot it should *not* read.
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+ */
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+ if (++ring->end >= BGMAC_TX_RING_SLOTS)
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+ ring->end = 0;
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+ bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_INDEX,
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+ ring->end * sizeof(struct bgmac_dma_desc));
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+
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+ /* Always keep one slot free to allow detecting bugged calls. */
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+ if (--free_slots == 1)
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+ netif_stop_queue(net_dev);
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+
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+ return NETDEV_TX_OK;
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+
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+err_stop_drop:
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+ netif_stop_queue(net_dev);
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+ dev_kfree_skb(skb);
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+ return NETDEV_TX_OK;
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+}
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+
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+/* Free transmitted packets */
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+static void bgmac_dma_tx_free(struct bgmac *bgmac, struct bgmac_dma_ring *ring)
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+{
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+ struct device *dma_dev = bgmac->core->dma_dev;
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+ int empty_slot;
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+ bool freed = false;
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+
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+ /* The last slot that hardware didn't consume yet */
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+ empty_slot = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_STATUS);
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+ empty_slot &= BGMAC_DMA_TX_STATDPTR;
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+ empty_slot /= sizeof(struct bgmac_dma_desc);
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+
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+ while (ring->start != empty_slot) {
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+ struct bgmac_slot_info *slot = &ring->slots[ring->start];
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+
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+ if (slot->skb) {
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+ /* Unmap no longer used buffer */
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+ dma_unmap_single(dma_dev, slot->dma_addr,
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+ slot->skb->len, DMA_TO_DEVICE);
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+ slot->dma_addr = 0;
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+
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+ /* Free memory! :) */
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+ dev_kfree_skb(slot->skb);
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+ slot->skb = NULL;
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+ } else {
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+ bgmac_err(bgmac, "Hardware reported transmission for empty TX ring slot %d! End of ring: %d\n",
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+ ring->start, ring->end);
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+ }
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+
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+ if (++ring->start >= BGMAC_TX_RING_SLOTS)
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+ ring->start = 0;
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+ freed = true;
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+ }
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+
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+ if (freed && netif_queue_stopped(bgmac->net_dev))
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+ netif_wake_queue(bgmac->net_dev);
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+}
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+
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+static void bgmac_dma_rx_reset(struct bgmac *bgmac, struct bgmac_dma_ring *ring)
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+{
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+ if (!ring->mmio_base)
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+ return;
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+
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+ bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_CTL, 0);
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+ if (!bgmac_wait_value(bgmac->core,
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+ ring->mmio_base + BGMAC_DMA_RX_STATUS,
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+ BGMAC_DMA_RX_STAT, BGMAC_DMA_RX_STAT_DISABLED,
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+ 10000))
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+ bgmac_err(bgmac, "Reset of ring 0x%X RX failed\n",
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+ ring->mmio_base);
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+}
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+
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+static void bgmac_dma_rx_enable(struct bgmac *bgmac,
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+ struct bgmac_dma_ring *ring)
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+{
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+ u32 ctl;
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+
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+ ctl = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_RX_CTL);
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+ ctl &= BGMAC_DMA_RX_ADDREXT_MASK;
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+ ctl |= BGMAC_DMA_RX_ENABLE;
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+ ctl |= BGMAC_DMA_RX_PARITY_DISABLE;
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+ ctl |= BGMAC_DMA_RX_OVERFLOW_CONT;
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+ ctl |= BGMAC_RX_FRAME_OFFSET << BGMAC_DMA_RX_FRAME_OFFSET_SHIFT;
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+ bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_CTL, ctl);
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+}
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+
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+static int bgmac_dma_rx_skb_for_slot(struct bgmac *bgmac,
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+ struct bgmac_slot_info *slot)
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+{
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+ struct device *dma_dev = bgmac->core->dma_dev;
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+ struct bgmac_rx_header *rx;
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+
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+ /* Alloc skb */
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+ slot->skb = netdev_alloc_skb(bgmac->net_dev, BGMAC_RX_BUF_SIZE);
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+ if (!slot->skb) {
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+ bgmac_err(bgmac, "Allocation of skb failed!\n");
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+ return -ENOMEM;
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+ }
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+
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+ /* Poison - if everything goes fine, hardware will overwrite it */
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+ rx = (struct bgmac_rx_header *)slot->skb->data;
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+ rx->len = cpu_to_le16(0xdead);
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+ rx->flags = cpu_to_le16(0xbeef);
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+
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+ /* Map skb for the DMA */
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+ slot->dma_addr = dma_map_single(dma_dev, slot->skb->data,
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+ BGMAC_RX_BUF_SIZE, DMA_FROM_DEVICE);
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+ if (dma_mapping_error(dma_dev, slot->dma_addr)) {
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+ bgmac_err(bgmac, "DMA mapping error\n");
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+ return -ENOMEM;
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+ }
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+ if (slot->dma_addr & 0xC0000000)
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+ bgmac_warn(bgmac, "DMA address using 0xC0000000 bit(s), it may need translation trick\n");
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+
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+ return 0;
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+}
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+
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+static int bgmac_dma_rx_read(struct bgmac *bgmac, struct bgmac_dma_ring *ring,
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+ int weight)
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+{
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+ u32 end_slot;
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+ int handled = 0;
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+
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+ end_slot = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_RX_STATUS);
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+ end_slot &= BGMAC_DMA_RX_STATDPTR;
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+ end_slot /= sizeof(struct bgmac_dma_desc);
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+
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+ ring->end = end_slot;
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+
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+ while (ring->start != ring->end) {
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+ struct device *dma_dev = bgmac->core->dma_dev;
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+ struct bgmac_slot_info *slot = &ring->slots[ring->start];
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+ struct sk_buff *skb = slot->skb;
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+ struct sk_buff *new_skb;
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+ struct bgmac_rx_header *rx;
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+ u16 len, flags;
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+
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+ /* Unmap buffer to make it accessible to the CPU */
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+ dma_sync_single_for_cpu(dma_dev, slot->dma_addr,
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+ BGMAC_RX_BUF_SIZE, DMA_FROM_DEVICE);
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+
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+ /* Get info from the header */
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+ rx = (struct bgmac_rx_header *)skb->data;
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+ len = le16_to_cpu(rx->len);
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+ flags = le16_to_cpu(rx->flags);
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+
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+ /* Check for poison and drop or pass the packet */
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+ if (len == 0xdead && flags == 0xbeef) {
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+ bgmac_err(bgmac, "Found poisoned packet at slot %d, DMA issue!\n",
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+ ring->start);
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+ } else {
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+ new_skb = netdev_alloc_skb(bgmac->net_dev, len);
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+ if (new_skb) {
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+ skb_put(new_skb, len);
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+ skb_copy_from_linear_data_offset(skb, BGMAC_RX_FRAME_OFFSET,
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+ new_skb->data,
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+ len);
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+ new_skb->protocol =
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+ eth_type_trans(new_skb, bgmac->net_dev);
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+ netif_receive_skb(new_skb);
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+ handled++;
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+ } else {
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+ bgmac->net_dev->stats.rx_dropped++;
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+ bgmac_err(bgmac, "Allocation of skb for copying packet failed!\n");
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+ }
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+
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+ /* Poison the old skb */
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+ rx->len = cpu_to_le16(0xdead);
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+ rx->flags = cpu_to_le16(0xbeef);
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+ }
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+
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+ /* Make it back accessible to the hardware */
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+ dma_sync_single_for_device(dma_dev, slot->dma_addr,
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+ BGMAC_RX_BUF_SIZE, DMA_FROM_DEVICE);
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+
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+ if (++ring->start >= BGMAC_RX_RING_SLOTS)
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+ ring->start = 0;
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+
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+ if (handled >= weight) /* Should never be greater */
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+ break;
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+ }
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+
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+ return handled;
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+}
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+
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+/* Does ring support unaligned addressing? */
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+static bool bgmac_dma_unaligned(struct bgmac *bgmac,
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+ struct bgmac_dma_ring *ring,
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+ enum bgmac_dma_ring_type ring_type)
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+{
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+ switch (ring_type) {
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+ case BGMAC_DMA_RING_TX:
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+ bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_RINGLO,
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+ 0xff0);
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+ if (bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_RINGLO))
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+ return true;
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+ break;
|
|
+ case BGMAC_DMA_RING_RX:
|
|
+ bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_RINGLO,
|
|
+ 0xff0);
|
|
+ if (bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_RX_RINGLO))
|
|
+ return true;
|
|
+ break;
|
|
+ }
|
|
+ return false;
|
|
+}
|
|
+
|
|
+static void bgmac_dma_ring_free(struct bgmac *bgmac,
|
|
+ struct bgmac_dma_ring *ring)
|
|
+{
|
|
+ struct device *dma_dev = bgmac->core->dma_dev;
|
|
+ struct bgmac_slot_info *slot;
|
|
+ int size;
|
|
+ int i;
|
|
+
|
|
+ for (i = 0; i < ring->num_slots; i++) {
|
|
+ slot = &ring->slots[i];
|
|
+ if (slot->skb) {
|
|
+ if (slot->dma_addr)
|
|
+ dma_unmap_single(dma_dev, slot->dma_addr,
|
|
+ slot->skb->len, DMA_TO_DEVICE);
|
|
+ dev_kfree_skb(slot->skb);
|
|
+ }
|
|
+ }
|
|
+
|
|
+ if (ring->cpu_base) {
|
|
+ /* Free ring of descriptors */
|
|
+ size = ring->num_slots * sizeof(struct bgmac_dma_desc);
|
|
+ dma_free_coherent(dma_dev, size, ring->cpu_base,
|
|
+ ring->dma_base);
|
|
+ }
|
|
+}
|
|
+
|
|
+static void bgmac_dma_free(struct bgmac *bgmac)
|
|
+{
|
|
+ int i;
|
|
+
|
|
+ for (i = 0; i < BGMAC_MAX_TX_RINGS; i++)
|
|
+ bgmac_dma_ring_free(bgmac, &bgmac->tx_ring[i]);
|
|
+ for (i = 0; i < BGMAC_MAX_RX_RINGS; i++)
|
|
+ bgmac_dma_ring_free(bgmac, &bgmac->rx_ring[i]);
|
|
+}
|
|
+
|
|
+static int bgmac_dma_alloc(struct bgmac *bgmac)
|
|
+{
|
|
+ struct device *dma_dev = bgmac->core->dma_dev;
|
|
+ struct bgmac_dma_ring *ring;
|
|
+ static const u16 ring_base[] = { BGMAC_DMA_BASE0, BGMAC_DMA_BASE1,
|
|
+ BGMAC_DMA_BASE2, BGMAC_DMA_BASE3, };
|
|
+ int size; /* ring size: different for Tx and Rx */
|
|
+ int err;
|
|
+ int i;
|
|
+
|
|
+ BUILD_BUG_ON(BGMAC_MAX_TX_RINGS > ARRAY_SIZE(ring_base));
|
|
+ BUILD_BUG_ON(BGMAC_MAX_RX_RINGS > ARRAY_SIZE(ring_base));
|
|
+
|
|
+ if (!(bcma_aread32(bgmac->core, BCMA_IOST) & BCMA_IOST_DMA64)) {
|
|
+ bgmac_err(bgmac, "Core does not report 64-bit DMA\n");
|
|
+ return -ENOTSUPP;
|
|
+ }
|
|
+
|
|
+ for (i = 0; i < BGMAC_MAX_TX_RINGS; i++) {
|
|
+ ring = &bgmac->tx_ring[i];
|
|
+ ring->num_slots = BGMAC_TX_RING_SLOTS;
|
|
+ ring->mmio_base = ring_base[i];
|
|
+ if (bgmac_dma_unaligned(bgmac, ring, BGMAC_DMA_RING_TX))
|
|
+ bgmac_warn(bgmac, "TX on ring 0x%X supports unaligned addressing but this feature is not implemented\n",
|
|
+ ring->mmio_base);
|
|
+
|
|
+ /* Alloc ring of descriptors */
|
|
+ size = ring->num_slots * sizeof(struct bgmac_dma_desc);
|
|
+ ring->cpu_base = dma_zalloc_coherent(dma_dev, size,
|
|
+ &ring->dma_base,
|
|
+ GFP_KERNEL);
|
|
+ if (!ring->cpu_base) {
|
|
+ bgmac_err(bgmac, "Allocation of TX ring 0x%X failed\n",
|
|
+ ring->mmio_base);
|
|
+ goto err_dma_free;
|
|
+ }
|
|
+ if (ring->dma_base & 0xC0000000)
|
|
+ bgmac_warn(bgmac, "DMA address using 0xC0000000 bit(s), it may need translation trick\n");
|
|
+
|
|
+ /* No need to alloc TX slots yet */
|
|
+ }
|
|
+
|
|
+ for (i = 0; i < BGMAC_MAX_RX_RINGS; i++) {
|
|
+ ring = &bgmac->rx_ring[i];
|
|
+ ring->num_slots = BGMAC_RX_RING_SLOTS;
|
|
+ ring->mmio_base = ring_base[i];
|
|
+ if (bgmac_dma_unaligned(bgmac, ring, BGMAC_DMA_RING_RX))
|
|
+ bgmac_warn(bgmac, "RX on ring 0x%X supports unaligned addressing but this feature is not implemented\n",
|
|
+ ring->mmio_base);
|
|
+
|
|
+ /* Alloc ring of descriptors */
|
|
+ size = ring->num_slots * sizeof(struct bgmac_dma_desc);
|
|
+ ring->cpu_base = dma_zalloc_coherent(dma_dev, size,
|
|
+ &ring->dma_base,
|
|
+ GFP_KERNEL);
|
|
+ if (!ring->cpu_base) {
|
|
+ bgmac_err(bgmac, "Allocation of RX ring 0x%X failed\n",
|
|
+ ring->mmio_base);
|
|
+ err = -ENOMEM;
|
|
+ goto err_dma_free;
|
|
+ }
|
|
+ if (ring->dma_base & 0xC0000000)
|
|
+ bgmac_warn(bgmac, "DMA address using 0xC0000000 bit(s), it may need translation trick\n");
|
|
+
|
|
+ /* Alloc RX slots */
|
|
+ for (i = 0; i < ring->num_slots; i++) {
|
|
+ err = bgmac_dma_rx_skb_for_slot(bgmac, &ring->slots[i]);
|
|
+ if (err) {
|
|
+ bgmac_err(bgmac, "Can't allocate skb for slot in RX ring\n");
|
|
+ goto err_dma_free;
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+
|
|
+err_dma_free:
|
|
+ bgmac_dma_free(bgmac);
|
|
+ return -ENOMEM;
|
|
+}
|
|
+
|
|
+static void bgmac_dma_init(struct bgmac *bgmac)
|
|
+{
|
|
+ struct bgmac_dma_ring *ring;
|
|
+ struct bgmac_dma_desc *dma_desc;
|
|
+ u32 ctl0, ctl1;
|
|
+ int i;
|
|
+
|
|
+ for (i = 0; i < BGMAC_MAX_TX_RINGS; i++) {
|
|
+ ring = &bgmac->tx_ring[i];
|
|
+
|
|
+ /* We don't implement unaligned addressing, so enable first */
|
|
+ bgmac_dma_tx_enable(bgmac, ring);
|
|
+ bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_RINGLO,
|
|
+ lower_32_bits(ring->dma_base));
|
|
+ bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_RINGHI,
|
|
+ upper_32_bits(ring->dma_base));
|
|
+
|
|
+ ring->start = 0;
|
|
+ ring->end = 0; /* Points the slot that should *not* be read */
|
|
+ }
|
|
+
|
|
+ for (i = 0; i < BGMAC_MAX_RX_RINGS; i++) {
|
|
+ ring = &bgmac->rx_ring[i];
|
|
+
|
|
+ /* We don't implement unaligned addressing, so enable first */
|
|
+ bgmac_dma_rx_enable(bgmac, ring);
|
|
+ bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_RINGLO,
|
|
+ lower_32_bits(ring->dma_base));
|
|
+ bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_RINGHI,
|
|
+ upper_32_bits(ring->dma_base));
|
|
+
|
|
+ for (i = 0, dma_desc = ring->cpu_base; i < ring->num_slots;
|
|
+ i++, dma_desc++) {
|
|
+ ctl0 = ctl1 = 0;
|
|
+
|
|
+ if (i == ring->num_slots - 1)
|
|
+ ctl0 |= BGMAC_DESC_CTL0_EOT;
|
|
+ ctl1 |= BGMAC_RX_BUF_SIZE & BGMAC_DESC_CTL1_LEN;
|
|
+ /* Is there any BGMAC device that requires extension? */
|
|
+ /* ctl1 |= (addrext << B43_DMA64_DCTL1_ADDREXT_SHIFT) &
|
|
+ * B43_DMA64_DCTL1_ADDREXT_MASK;
|
|
+ */
|
|
+
|
|
+ dma_desc->addr_low = cpu_to_le32(lower_32_bits(ring->slots[i].dma_addr));
|
|
+ dma_desc->addr_high = cpu_to_le32(upper_32_bits(ring->slots[i].dma_addr));
|
|
+ dma_desc->ctl0 = cpu_to_le32(ctl0);
|
|
+ dma_desc->ctl1 = cpu_to_le32(ctl1);
|
|
+ }
|
|
+
|
|
+ bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_INDEX,
|
|
+ ring->num_slots * sizeof(struct bgmac_dma_desc));
|
|
+
|
|
+ ring->start = 0;
|
|
+ ring->end = 0;
|
|
+ }
|
|
+}
|
|
+
|
|
+/**************************************************
|
|
+ * PHY ops
|
|
+ **************************************************/
|
|
+
|
|
+u16 bgmac_phy_read(struct bgmac *bgmac, u8 phyaddr, u8 reg)
|
|
+{
|
|
+ struct bcma_device *core;
|
|
+ u16 phy_access_addr;
|
|
+ u16 phy_ctl_addr;
|
|
+ u32 tmp;
|
|
+
|
|
+ BUILD_BUG_ON(BGMAC_PA_DATA_MASK != BCMA_GMAC_CMN_PA_DATA_MASK);
|
|
+ BUILD_BUG_ON(BGMAC_PA_ADDR_MASK != BCMA_GMAC_CMN_PA_ADDR_MASK);
|
|
+ BUILD_BUG_ON(BGMAC_PA_ADDR_SHIFT != BCMA_GMAC_CMN_PA_ADDR_SHIFT);
|
|
+ BUILD_BUG_ON(BGMAC_PA_REG_MASK != BCMA_GMAC_CMN_PA_REG_MASK);
|
|
+ BUILD_BUG_ON(BGMAC_PA_REG_SHIFT != BCMA_GMAC_CMN_PA_REG_SHIFT);
|
|
+ BUILD_BUG_ON(BGMAC_PA_WRITE != BCMA_GMAC_CMN_PA_WRITE);
|
|
+ BUILD_BUG_ON(BGMAC_PA_START != BCMA_GMAC_CMN_PA_START);
|
|
+ BUILD_BUG_ON(BGMAC_PC_EPA_MASK != BCMA_GMAC_CMN_PC_EPA_MASK);
|
|
+ BUILD_BUG_ON(BGMAC_PC_MCT_MASK != BCMA_GMAC_CMN_PC_MCT_MASK);
|
|
+ BUILD_BUG_ON(BGMAC_PC_MCT_SHIFT != BCMA_GMAC_CMN_PC_MCT_SHIFT);
|
|
+ BUILD_BUG_ON(BGMAC_PC_MTE != BCMA_GMAC_CMN_PC_MTE);
|
|
+
|
|
+ if (bgmac->core->id.id == BCMA_CORE_4706_MAC_GBIT) {
|
|
+ core = bgmac->core->bus->drv_gmac_cmn.core;
|
|
+ phy_access_addr = BCMA_GMAC_CMN_PHY_ACCESS;
|
|
+ phy_ctl_addr = BCMA_GMAC_CMN_PHY_CTL;
|
|
+ } else {
|
|
+ core = bgmac->core;
|
|
+ phy_access_addr = BGMAC_PHY_ACCESS;
|
|
+ phy_ctl_addr = BGMAC_PHY_CNTL;
|
|
+ }
|
|
+
|
|
+ tmp = bcma_read32(core, phy_ctl_addr);
|
|
+ tmp &= ~BGMAC_PC_EPA_MASK;
|
|
+ tmp |= phyaddr;
|
|
+ bcma_write32(core, phy_ctl_addr, tmp);
|
|
+
|
|
+ tmp = BGMAC_PA_START;
|
|
+ tmp |= phyaddr << BGMAC_PA_ADDR_SHIFT;
|
|
+ tmp |= reg << BGMAC_PA_REG_SHIFT;
|
|
+ bcma_write32(core, phy_access_addr, tmp);
|
|
+
|
|
+ if (!bgmac_wait_value(core, phy_access_addr, BGMAC_PA_START, 0, 1000)) {
|
|
+ bgmac_err(bgmac, "Reading PHY %d register 0x%X failed\n",
|
|
+ phyaddr, reg);
|
|
+ return 0xffff;
|
|
+ }
|
|
+
|
|
+ return bcma_read32(core, phy_access_addr) & BGMAC_PA_DATA_MASK;
|
|
+}
|
|
+
|
|
+/* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphywr */
|
|
+void bgmac_phy_write(struct bgmac *bgmac, u8 phyaddr, u8 reg, u16 value)
|
|
+{
|
|
+ struct bcma_device *core;
|
|
+ u16 phy_access_addr;
|
|
+ u16 phy_ctl_addr;
|
|
+ u32 tmp;
|
|
+
|
|
+ if (bgmac->core->id.id == BCMA_CORE_4706_MAC_GBIT) {
|
|
+ core = bgmac->core->bus->drv_gmac_cmn.core;
|
|
+ phy_access_addr = BCMA_GMAC_CMN_PHY_ACCESS;
|
|
+ phy_ctl_addr = BCMA_GMAC_CMN_PHY_CTL;
|
|
+ } else {
|
|
+ core = bgmac->core;
|
|
+ phy_access_addr = BGMAC_PHY_ACCESS;
|
|
+ phy_ctl_addr = BGMAC_PHY_CNTL;
|
|
+ }
|
|
+
|
|
+ tmp = bcma_read32(core, phy_ctl_addr);
|
|
+ tmp &= ~BGMAC_PC_EPA_MASK;
|
|
+ tmp |= phyaddr;
|
|
+ bcma_write32(core, phy_ctl_addr, tmp);
|
|
+
|
|
+ bgmac_write(bgmac, BGMAC_INT_STATUS, BGMAC_IS_MDIO);
|
|
+ if (bgmac_read(bgmac, BGMAC_INT_STATUS) & BGMAC_IS_MDIO)
|
|
+ bgmac_warn(bgmac, "Error setting MDIO int\n");
|
|
+
|
|
+ tmp = BGMAC_PA_START;
|
|
+ tmp |= BGMAC_PA_WRITE;
|
|
+ tmp |= phyaddr << BGMAC_PA_ADDR_SHIFT;
|
|
+ tmp |= reg << BGMAC_PA_REG_SHIFT;
|
|
+ tmp |= value;
|
|
+ bcma_write32(core, phy_access_addr, tmp);
|
|
+
|
|
+ if (!bgmac_wait_value(core, phy_access_addr, BGMAC_PA_START, 0, 1000))
|
|
+ bgmac_err(bgmac, "Writing to PHY %d register 0x%X failed\n",
|
|
+ phyaddr, reg);
|
|
+}
|
|
+
|
|
+/* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphyforce */
|
|
+static void bgmac_phy_force(struct bgmac *bgmac)
|
|
+{
|
|
+ u16 ctl;
|
|
+ u16 mask = ~(BGMAC_PHY_CTL_SPEED | BGMAC_PHY_CTL_SPEED_MSB |
|
|
+ BGMAC_PHY_CTL_ANENAB | BGMAC_PHY_CTL_DUPLEX);
|
|
+
|
|
+ if (bgmac->phyaddr == BGMAC_PHY_NOREGS)
|
|
+ return;
|
|
+
|
|
+ if (bgmac->autoneg)
|
|
+ return;
|
|
+
|
|
+ ctl = bgmac_phy_read(bgmac, bgmac->phyaddr, BGMAC_PHY_CTL);
|
|
+ ctl &= mask;
|
|
+ if (bgmac->full_duplex)
|
|
+ ctl |= BGMAC_PHY_CTL_DUPLEX;
|
|
+ if (bgmac->speed == BGMAC_SPEED_100)
|
|
+ ctl |= BGMAC_PHY_CTL_SPEED_100;
|
|
+ else if (bgmac->speed == BGMAC_SPEED_1000)
|
|
+ ctl |= BGMAC_PHY_CTL_SPEED_1000;
|
|
+ bgmac_phy_write(bgmac, bgmac->phyaddr, BGMAC_PHY_CTL, ctl);
|
|
+}
|
|
+
|
|
+/* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphyadvertise */
|
|
+static void bgmac_phy_advertise(struct bgmac *bgmac)
|
|
+{
|
|
+ u16 adv;
|
|
+
|
|
+ if (bgmac->phyaddr == BGMAC_PHY_NOREGS)
|
|
+ return;
|
|
+
|
|
+ if (!bgmac->autoneg)
|
|
+ return;
|
|
+
|
|
+ /* Adv selected 10/100 speeds */
|
|
+ adv = bgmac_phy_read(bgmac, bgmac->phyaddr, BGMAC_PHY_ADV);
|
|
+ adv &= ~(BGMAC_PHY_ADV_10HALF | BGMAC_PHY_ADV_10FULL |
|
|
+ BGMAC_PHY_ADV_100HALF | BGMAC_PHY_ADV_100FULL);
|
|
+ if (!bgmac->full_duplex && bgmac->speed & BGMAC_SPEED_10)
|
|
+ adv |= BGMAC_PHY_ADV_10HALF;
|
|
+ if (!bgmac->full_duplex && bgmac->speed & BGMAC_SPEED_100)
|
|
+ adv |= BGMAC_PHY_ADV_100HALF;
|
|
+ if (bgmac->full_duplex && bgmac->speed & BGMAC_SPEED_10)
|
|
+ adv |= BGMAC_PHY_ADV_10FULL;
|
|
+ if (bgmac->full_duplex && bgmac->speed & BGMAC_SPEED_100)
|
|
+ adv |= BGMAC_PHY_ADV_100FULL;
|
|
+ bgmac_phy_write(bgmac, bgmac->phyaddr, BGMAC_PHY_ADV, adv);
|
|
+
|
|
+ /* Adv selected 1000 speeds */
|
|
+ adv = bgmac_phy_read(bgmac, bgmac->phyaddr, BGMAC_PHY_ADV2);
|
|
+ adv &= ~(BGMAC_PHY_ADV2_1000HALF | BGMAC_PHY_ADV2_1000FULL);
|
|
+ if (!bgmac->full_duplex && bgmac->speed & BGMAC_SPEED_1000)
|
|
+ adv |= BGMAC_PHY_ADV2_1000HALF;
|
|
+ if (bgmac->full_duplex && bgmac->speed & BGMAC_SPEED_1000)
|
|
+ adv |= BGMAC_PHY_ADV2_1000FULL;
|
|
+ bgmac_phy_write(bgmac, bgmac->phyaddr, BGMAC_PHY_ADV2, adv);
|
|
+
|
|
+ /* Restart */
|
|
+ bgmac_phy_write(bgmac, bgmac->phyaddr, BGMAC_PHY_CTL,
|
|
+ bgmac_phy_read(bgmac, bgmac->phyaddr, BGMAC_PHY_CTL) |
|
|
+ BGMAC_PHY_CTL_RESTART);
|
|
+}
|
|
+
|
|
+/* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphyinit */
|
|
+static void bgmac_phy_init(struct bgmac *bgmac)
|
|
+{
|
|
+ struct bcma_chipinfo *ci = &bgmac->core->bus->chipinfo;
|
|
+ struct bcma_drv_cc *cc = &bgmac->core->bus->drv_cc;
|
|
+ u8 i;
|
|
+
|
|
+ if (ci->id == BCMA_CHIP_ID_BCM5356) {
|
|
+ for (i = 0; i < 5; i++) {
|
|
+ bgmac_phy_write(bgmac, i, 0x1f, 0x008b);
|
|
+ bgmac_phy_write(bgmac, i, 0x15, 0x0100);
|
|
+ bgmac_phy_write(bgmac, i, 0x1f, 0x000f);
|
|
+ bgmac_phy_write(bgmac, i, 0x12, 0x2aaa);
|
|
+ bgmac_phy_write(bgmac, i, 0x1f, 0x000b);
|
|
+ }
|
|
+ }
|
|
+ if ((ci->id == BCMA_CHIP_ID_BCM5357 && ci->pkg != 10) ||
|
|
+ (ci->id == BCMA_CHIP_ID_BCM4749 && ci->pkg != 10) ||
|
|
+ (ci->id == BCMA_CHIP_ID_BCM53572 && ci->pkg != 9)) {
|
|
+ bcma_chipco_chipctl_maskset(cc, 2, ~0xc0000000, 0);
|
|
+ bcma_chipco_chipctl_maskset(cc, 4, ~0x80000000, 0);
|
|
+ for (i = 0; i < 5; i++) {
|
|
+ bgmac_phy_write(bgmac, i, 0x1f, 0x000f);
|
|
+ bgmac_phy_write(bgmac, i, 0x16, 0x5284);
|
|
+ bgmac_phy_write(bgmac, i, 0x1f, 0x000b);
|
|
+ bgmac_phy_write(bgmac, i, 0x17, 0x0010);
|
|
+ bgmac_phy_write(bgmac, i, 0x1f, 0x000f);
|
|
+ bgmac_phy_write(bgmac, i, 0x16, 0x5296);
|
|
+ bgmac_phy_write(bgmac, i, 0x17, 0x1073);
|
|
+ bgmac_phy_write(bgmac, i, 0x17, 0x9073);
|
|
+ bgmac_phy_write(bgmac, i, 0x16, 0x52b6);
|
|
+ bgmac_phy_write(bgmac, i, 0x17, 0x9273);
|
|
+ bgmac_phy_write(bgmac, i, 0x1f, 0x000b);
|
|
+ }
|
|
+ }
|
|
+}
|
|
+
|
|
+/* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphyreset */
|
|
+static void bgmac_phy_reset(struct bgmac *bgmac)
|
|
+{
|
|
+ if (bgmac->phyaddr == BGMAC_PHY_NOREGS)
|
|
+ return;
|
|
+
|
|
+ bgmac_phy_write(bgmac, bgmac->phyaddr, BGMAC_PHY_CTL,
|
|
+ BGMAC_PHY_CTL_RESET);
|
|
+ udelay(100);
|
|
+ if (bgmac_phy_read(bgmac, bgmac->phyaddr, BGMAC_PHY_CTL) &
|
|
+ BGMAC_PHY_CTL_RESET)
|
|
+ bgmac_err(bgmac, "PHY reset failed\n");
|
|
+ bgmac_phy_init(bgmac);
|
|
+}
|
|
+
|
|
+/**************************************************
|
|
+ * Chip ops
|
|
+ **************************************************/
|
|
+
|
|
+/* TODO: can we just drop @force? Can we don't reset MAC at all if there is
|
|
+ * nothing to change? Try if after stabilizng driver.
|
|
+ */
|
|
+static void bgmac_cmdcfg_maskset(struct bgmac *bgmac, u32 mask, u32 set,
|
|
+ bool force)
|
|
+{
|
|
+ u32 cmdcfg = bgmac_read(bgmac, BGMAC_CMDCFG);
|
|
+ u32 new_val = (cmdcfg & mask) | set;
|
|
+
|
|
+ bgmac_set(bgmac, BGMAC_CMDCFG, BGMAC_CMDCFG_SR);
|
|
+ udelay(2);
|
|
+
|
|
+ if (new_val != cmdcfg || force)
|
|
+ bgmac_write(bgmac, BGMAC_CMDCFG, new_val);
|
|
+
|
|
+ bgmac_mask(bgmac, BGMAC_CMDCFG, ~BGMAC_CMDCFG_SR);
|
|
+ udelay(2);
|
|
+}
|
|
+
|
|
+#if 0 /* We don't use that regs yet */
|
|
+static void bgmac_chip_stats_update(struct bgmac *bgmac)
|
|
+{
|
|
+ int i;
|
|
+
|
|
+ if (bgmac->core->id.id != BCMA_CORE_4706_MAC_GBIT) {
|
|
+ for (i = 0; i < BGMAC_NUM_MIB_TX_REGS; i++)
|
|
+ bgmac->mib_tx_regs[i] =
|
|
+ bgmac_read(bgmac,
|
|
+ BGMAC_TX_GOOD_OCTETS + (i * 4));
|
|
+ for (i = 0; i < BGMAC_NUM_MIB_RX_REGS; i++)
|
|
+ bgmac->mib_rx_regs[i] =
|
|
+ bgmac_read(bgmac,
|
|
+ BGMAC_RX_GOOD_OCTETS + (i * 4));
|
|
+ }
|
|
+
|
|
+ /* TODO: what else? how to handle BCM4706? Specs are needed */
|
|
+}
|
|
+#endif
|
|
+
|
|
+static void bgmac_clear_mib(struct bgmac *bgmac)
|
|
+{
|
|
+ int i;
|
|
+
|
|
+ if (bgmac->core->id.id == BCMA_CORE_4706_MAC_GBIT)
|
|
+ return;
|
|
+
|
|
+ bgmac_set(bgmac, BGMAC_DEV_CTL, BGMAC_DC_MROR);
|
|
+ for (i = 0; i < BGMAC_NUM_MIB_TX_REGS; i++)
|
|
+ bgmac_read(bgmac, BGMAC_TX_GOOD_OCTETS + (i * 4));
|
|
+ for (i = 0; i < BGMAC_NUM_MIB_RX_REGS; i++)
|
|
+ bgmac_read(bgmac, BGMAC_RX_GOOD_OCTETS + (i * 4));
|
|
+}
|
|
+
|
|
+/* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/gmac_speed */
|
|
+static void bgmac_speed(struct bgmac *bgmac, int speed)
|
|
+{
|
|
+ u32 mask = ~(BGMAC_CMDCFG_ES_MASK | BGMAC_CMDCFG_HD);
|
|
+ u32 set = 0;
|
|
+
|
|
+ if (speed & BGMAC_SPEED_10)
|
|
+ set |= BGMAC_CMDCFG_ES_10;
|
|
+ if (speed & BGMAC_SPEED_100)
|
|
+ set |= BGMAC_CMDCFG_ES_100;
|
|
+ if (speed & BGMAC_SPEED_1000)
|
|
+ set |= BGMAC_CMDCFG_ES_1000;
|
|
+ if (!bgmac->full_duplex)
|
|
+ set |= BGMAC_CMDCFG_HD;
|
|
+ bgmac_cmdcfg_maskset(bgmac, mask, set, true);
|
|
+}
|
|
+
|
|
+static void bgmac_miiconfig(struct bgmac *bgmac)
|
|
+{
|
|
+ u8 imode = (bgmac_read(bgmac, BGMAC_DEV_STATUS) & BGMAC_DS_MM_MASK) >>
|
|
+ BGMAC_DS_MM_SHIFT;
|
|
+ if (imode == 0 || imode == 1) {
|
|
+ if (bgmac->autoneg)
|
|
+ bgmac_speed(bgmac, BGMAC_SPEED_100);
|
|
+ else
|
|
+ bgmac_speed(bgmac, bgmac->speed);
|
|
+ }
|
|
+}
|
|
+
|
|
+/* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipreset */
|
|
+static void bgmac_chip_reset(struct bgmac *bgmac)
|
|
+{
|
|
+ struct bcma_device *core = bgmac->core;
|
|
+ struct bcma_bus *bus = core->bus;
|
|
+ struct bcma_chipinfo *ci = &bus->chipinfo;
|
|
+ u32 flags = 0;
|
|
+ u32 iost;
|
|
+ int i;
|
|
+
|
|
+ if (bcma_core_is_enabled(core)) {
|
|
+ if (!bgmac->stats_grabbed) {
|
|
+ /* bgmac_chip_stats_update(bgmac); */
|
|
+ bgmac->stats_grabbed = true;
|
|
+ }
|
|
+
|
|
+ for (i = 0; i < BGMAC_MAX_TX_RINGS; i++)
|
|
+ bgmac_dma_tx_reset(bgmac, &bgmac->tx_ring[i]);
|
|
+
|
|
+ bgmac_cmdcfg_maskset(bgmac, ~0, BGMAC_CMDCFG_ML, false);
|
|
+ udelay(1);
|
|
+
|
|
+ for (i = 0; i < BGMAC_MAX_RX_RINGS; i++)
|
|
+ bgmac_dma_rx_reset(bgmac, &bgmac->rx_ring[i]);
|
|
+
|
|
+ /* TODO: Clear software multicast filter list */
|
|
+ }
|
|
+
|
|
+ iost = bcma_aread32(core, BCMA_IOST);
|
|
+ if ((ci->id == BCMA_CHIP_ID_BCM5357 && ci->pkg == 10) ||
|
|
+ (ci->id == BCMA_CHIP_ID_BCM4749 && ci->pkg == 10) ||
|
|
+ (ci->id == BCMA_CHIP_ID_BCM53572 && ci->pkg == 9))
|
|
+ iost &= ~BGMAC_BCMA_IOST_ATTACHED;
|
|
+
|
|
+ if (iost & BGMAC_BCMA_IOST_ATTACHED) {
|
|
+ flags = BGMAC_BCMA_IOCTL_SW_CLKEN;
|
|
+ if (!bgmac->has_robosw)
|
|
+ flags |= BGMAC_BCMA_IOCTL_SW_RESET;
|
|
+ }
|
|
+
|
|
+ bcma_core_enable(core, flags);
|
|
+
|
|
+ if (core->id.rev > 2) {
|
|
+ bgmac_set(bgmac, BCMA_CLKCTLST, 1 << 8);
|
|
+ bgmac_wait_value(bgmac->core, BCMA_CLKCTLST, 1 << 24, 1 << 24,
|
|
+ 1000);
|
|
+ }
|
|
+
|
|
+ if (ci->id == BCMA_CHIP_ID_BCM5357 || ci->id == BCMA_CHIP_ID_BCM4749 ||
|
|
+ ci->id == BCMA_CHIP_ID_BCM53572) {
|
|
+ struct bcma_drv_cc *cc = &bgmac->core->bus->drv_cc;
|
|
+ u8 et_swtype = 0;
|
|
+ u8 sw_type = BGMAC_CHIPCTL_1_SW_TYPE_EPHY |
|
|
+ BGMAC_CHIPCTL_1_IF_TYPE_RMII;
|
|
+ char buf[2];
|
|
+
|
|
+ if (bcm47xx_nvram_getenv("et_swtype", buf, 1) > 0) {
|
|
+ if (kstrtou8(buf, 0, &et_swtype))
|
|
+ bgmac_err(bgmac, "Failed to parse et_swtype (%s)\n",
|
|
+ buf);
|
|
+ et_swtype &= 0x0f;
|
|
+ et_swtype <<= 4;
|
|
+ sw_type = et_swtype;
|
|
+ } else if (ci->id == BCMA_CHIP_ID_BCM5357 && ci->pkg == 9) {
|
|
+ sw_type = BGMAC_CHIPCTL_1_SW_TYPE_EPHYRMII;
|
|
+ } else if (0) {
|
|
+ /* TODO */
|
|
+ }
|
|
+ bcma_chipco_chipctl_maskset(cc, 1,
|
|
+ ~(BGMAC_CHIPCTL_1_IF_TYPE_MASK |
|
|
+ BGMAC_CHIPCTL_1_SW_TYPE_MASK),
|
|
+ sw_type);
|
|
+ }
|
|
+
|
|
+ if (iost & BGMAC_BCMA_IOST_ATTACHED && !bgmac->has_robosw)
|
|
+ bcma_awrite32(core, BCMA_IOCTL,
|
|
+ bcma_aread32(core, BCMA_IOCTL) &
|
|
+ ~BGMAC_BCMA_IOCTL_SW_RESET);
|
|
+
|
|
+ /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/gmac_reset
|
|
+ * Specs don't say about using BGMAC_CMDCFG_SR, but in this routine
|
|
+ * BGMAC_CMDCFG is read _after_ putting chip in a reset. So it has to
|
|
+ * be keps until taking MAC out of the reset.
|
|
+ */
|
|
+ bgmac_cmdcfg_maskset(bgmac,
|
|
+ ~(BGMAC_CMDCFG_TE |
|
|
+ BGMAC_CMDCFG_RE |
|
|
+ BGMAC_CMDCFG_RPI |
|
|
+ BGMAC_CMDCFG_TAI |
|
|
+ BGMAC_CMDCFG_HD |
|
|
+ BGMAC_CMDCFG_ML |
|
|
+ BGMAC_CMDCFG_CFE |
|
|
+ BGMAC_CMDCFG_RL |
|
|
+ BGMAC_CMDCFG_RED |
|
|
+ BGMAC_CMDCFG_PE |
|
|
+ BGMAC_CMDCFG_TPI |
|
|
+ BGMAC_CMDCFG_PAD_EN |
|
|
+ BGMAC_CMDCFG_PF),
|
|
+ BGMAC_CMDCFG_PROM |
|
|
+ BGMAC_CMDCFG_NLC |
|
|
+ BGMAC_CMDCFG_CFE |
|
|
+ BGMAC_CMDCFG_SR,
|
|
+ false);
|
|
+
|
|
+ bgmac_clear_mib(bgmac);
|
|
+ if (core->id.id == BCMA_CORE_4706_MAC_GBIT)
|
|
+ bcma_maskset32(bgmac->cmn, BCMA_GMAC_CMN_PHY_CTL, ~0,
|
|
+ BCMA_GMAC_CMN_PC_MTE);
|
|
+ else
|
|
+ bgmac_set(bgmac, BGMAC_PHY_CNTL, BGMAC_PC_MTE);
|
|
+ bgmac_miiconfig(bgmac);
|
|
+ bgmac_phy_init(bgmac);
|
|
+
|
|
+ bgmac->int_status = 0;
|
|
+}
|
|
+
|
|
+static void bgmac_chip_intrs_on(struct bgmac *bgmac)
|
|
+{
|
|
+ bgmac_write(bgmac, BGMAC_INT_MASK, bgmac->int_mask);
|
|
+}
|
|
+
|
|
+static void bgmac_chip_intrs_off(struct bgmac *bgmac)
|
|
+{
|
|
+ bgmac_write(bgmac, BGMAC_INT_MASK, 0);
|
|
+}
|
|
+
|
|
+/* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/gmac_enable */
|
|
+static void bgmac_enable(struct bgmac *bgmac)
|
|
+{
|
|
+ struct bcma_chipinfo *ci = &bgmac->core->bus->chipinfo;
|
|
+ u32 cmdcfg;
|
|
+ u32 mode;
|
|
+ u32 rxq_ctl;
|
|
+ u32 fl_ctl;
|
|
+ u16 bp_clk;
|
|
+ u8 mdp;
|
|
+
|
|
+ cmdcfg = bgmac_read(bgmac, BGMAC_CMDCFG);
|
|
+ bgmac_cmdcfg_maskset(bgmac, ~(BGMAC_CMDCFG_TE | BGMAC_CMDCFG_RE),
|
|
+ BGMAC_CMDCFG_SR, true);
|
|
+ udelay(2);
|
|
+ cmdcfg |= BGMAC_CMDCFG_TE | BGMAC_CMDCFG_RE;
|
|
+ bgmac_write(bgmac, BGMAC_CMDCFG, cmdcfg);
|
|
+
|
|
+ mode = (bgmac_read(bgmac, BGMAC_DEV_STATUS) & BGMAC_DS_MM_MASK) >>
|
|
+ BGMAC_DS_MM_SHIFT;
|
|
+ if (ci->id != BCMA_CHIP_ID_BCM47162 || mode != 0)
|
|
+ bgmac_set(bgmac, BCMA_CLKCTLST, BCMA_CLKCTLST_FORCEHT);
|
|
+ if (ci->id == BCMA_CHIP_ID_BCM47162 && mode == 2)
|
|
+ bcma_chipco_chipctl_maskset(&bgmac->core->bus->drv_cc, 1, ~0,
|
|
+ BGMAC_CHIPCTL_1_RXC_DLL_BYPASS);
|
|
+
|
|
+ switch (ci->id) {
|
|
+ case BCMA_CHIP_ID_BCM5357:
|
|
+ case BCMA_CHIP_ID_BCM4749:
|
|
+ case BCMA_CHIP_ID_BCM53572:
|
|
+ case BCMA_CHIP_ID_BCM4716:
|
|
+ case BCMA_CHIP_ID_BCM47162:
|
|
+ fl_ctl = 0x03cb04cb;
|
|
+ if (ci->id == BCMA_CHIP_ID_BCM5357 ||
|
|
+ ci->id == BCMA_CHIP_ID_BCM4749 ||
|
|
+ ci->id == BCMA_CHIP_ID_BCM53572)
|
|
+ fl_ctl = 0x2300e1;
|
|
+ bgmac_write(bgmac, BGMAC_FLOW_CTL_THRESH, fl_ctl);
|
|
+ bgmac_write(bgmac, BGMAC_PAUSE_CTL, 0x27fff);
|
|
+ break;
|
|
+ }
|
|
+
|
|
+ rxq_ctl = bgmac_read(bgmac, BGMAC_RXQ_CTL);
|
|
+ rxq_ctl &= ~BGMAC_RXQ_CTL_MDP_MASK;
|
|
+ bp_clk = bcma_pmu_get_bus_clock(&bgmac->core->bus->drv_cc) / 1000000;
|
|
+ mdp = (bp_clk * 128 / 1000) - 3;
|
|
+ rxq_ctl |= (mdp << BGMAC_RXQ_CTL_MDP_SHIFT);
|
|
+ bgmac_write(bgmac, BGMAC_RXQ_CTL, rxq_ctl);
|
|
+}
|
|
+
|
|
+/* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipinit */
|
|
+static void bgmac_chip_init(struct bgmac *bgmac, bool full_init)
|
|
+{
|
|
+ struct bgmac_dma_ring *ring;
|
|
+ u8 *mac = bgmac->net_dev->dev_addr;
|
|
+ u32 tmp;
|
|
+ int i;
|
|
+
|
|
+ /* 1 interrupt per received frame */
|
|
+ bgmac_write(bgmac, BGMAC_INT_RECV_LAZY, 1 << BGMAC_IRL_FC_SHIFT);
|
|
+
|
|
+ /* Enable 802.3x tx flow control (honor received PAUSE frames) */
|
|
+ bgmac_cmdcfg_maskset(bgmac, ~BGMAC_CMDCFG_RPI, 0, true);
|
|
+
|
|
+ if (bgmac->net_dev->flags & IFF_PROMISC)
|
|
+ bgmac_cmdcfg_maskset(bgmac, ~0, BGMAC_CMDCFG_PROM, false);
|
|
+ else
|
|
+ bgmac_cmdcfg_maskset(bgmac, ~BGMAC_CMDCFG_PROM, 0, false);
|
|
+
|
|
+ /* Set MAC addr */
|
|
+ tmp = (mac[0] << 24) | (mac[1] << 16) | (mac[2] << 8) | mac[3];
|
|
+ bgmac_write(bgmac, BGMAC_MACADDR_HIGH, tmp);
|
|
+ tmp = (mac[4] << 8) | mac[5];
|
|
+ bgmac_write(bgmac, BGMAC_MACADDR_LOW, tmp);
|
|
+
|
|
+ if (bgmac->loopback)
|
|
+ bgmac_cmdcfg_maskset(bgmac, ~0, BGMAC_CMDCFG_ML, true);
|
|
+ else
|
|
+ bgmac_cmdcfg_maskset(bgmac, ~BGMAC_CMDCFG_ML, 0, true);
|
|
+
|
|
+ bgmac_write(bgmac, BGMAC_RXMAX_LENGTH, 32 + ETHER_MAX_LEN);
|
|
+
|
|
+ if (!bgmac->autoneg) {
|
|
+ bgmac_speed(bgmac, bgmac->speed);
|
|
+ bgmac_phy_force(bgmac);
|
|
+ } else if (bgmac->speed) { /* if there is anything to adv */
|
|
+ bgmac_phy_advertise(bgmac);
|
|
+ }
|
|
+
|
|
+ if (full_init) {
|
|
+ bgmac_dma_init(bgmac);
|
|
+ if (1) /* FIXME: is there any case we don't want IRQs? */
|
|
+ bgmac_chip_intrs_on(bgmac);
|
|
+ } else {
|
|
+ for (i = 0; i < BGMAC_MAX_RX_RINGS; i++) {
|
|
+ ring = &bgmac->rx_ring[i];
|
|
+ bgmac_dma_rx_enable(bgmac, ring);
|
|
+ }
|
|
+ }
|
|
+
|
|
+ bgmac_enable(bgmac);
|
|
+}
|
|
+
|
|
+static irqreturn_t bgmac_interrupt(int irq, void *dev_id)
|
|
+{
|
|
+ struct bgmac *bgmac = netdev_priv(dev_id);
|
|
+
|
|
+ u32 int_status = bgmac_read(bgmac, BGMAC_INT_STATUS);
|
|
+ int_status &= bgmac->int_mask;
|
|
+
|
|
+ if (!int_status)
|
|
+ return IRQ_NONE;
|
|
+
|
|
+ /* Ack */
|
|
+ bgmac_write(bgmac, BGMAC_INT_STATUS, int_status);
|
|
+
|
|
+ /* Disable new interrupts until handling existing ones */
|
|
+ bgmac_chip_intrs_off(bgmac);
|
|
+
|
|
+ bgmac->int_status = int_status;
|
|
+
|
|
+ napi_schedule(&bgmac->napi);
|
|
+
|
|
+ return IRQ_HANDLED;
|
|
+}
|
|
+
|
|
+static int bgmac_poll(struct napi_struct *napi, int weight)
|
|
+{
|
|
+ struct bgmac *bgmac = container_of(napi, struct bgmac, napi);
|
|
+ struct bgmac_dma_ring *ring;
|
|
+ int handled = 0;
|
|
+
|
|
+ if (bgmac->int_status & BGMAC_IS_TX0) {
|
|
+ ring = &bgmac->tx_ring[0];
|
|
+ bgmac_dma_tx_free(bgmac, ring);
|
|
+ bgmac->int_status &= ~BGMAC_IS_TX0;
|
|
+ }
|
|
+
|
|
+ if (bgmac->int_status & BGMAC_IS_RX) {
|
|
+ ring = &bgmac->rx_ring[0];
|
|
+ handled += bgmac_dma_rx_read(bgmac, ring, weight);
|
|
+ bgmac->int_status &= ~BGMAC_IS_RX;
|
|
+ }
|
|
+
|
|
+ if (bgmac->int_status) {
|
|
+ bgmac_err(bgmac, "Unknown IRQs: 0x%08X\n", bgmac->int_status);
|
|
+ bgmac->int_status = 0;
|
|
+ }
|
|
+
|
|
+ if (handled < weight)
|
|
+ napi_complete(napi);
|
|
+
|
|
+ bgmac_chip_intrs_on(bgmac);
|
|
+
|
|
+ return handled;
|
|
+}
|
|
+
|
|
+/**************************************************
|
|
+ * net_device_ops
|
|
+ **************************************************/
|
|
+
|
|
+static int bgmac_open(struct net_device *net_dev)
|
|
+{
|
|
+ struct bgmac *bgmac = netdev_priv(net_dev);
|
|
+ int err = 0;
|
|
+
|
|
+ bgmac_chip_reset(bgmac);
|
|
+ /* Specs say about reclaiming rings here, but we do that in DMA init */
|
|
+ bgmac_chip_init(bgmac, true);
|
|
+
|
|
+ err = request_irq(bgmac->core->irq, bgmac_interrupt, IRQF_SHARED,
|
|
+ KBUILD_MODNAME, net_dev);
|
|
+ if (err < 0) {
|
|
+ bgmac_err(bgmac, "IRQ request error: %d!\n", err);
|
|
+ goto err_out;
|
|
+ }
|
|
+ napi_enable(&bgmac->napi);
|
|
+
|
|
+ netif_carrier_on(net_dev);
|
|
+
|
|
+err_out:
|
|
+ return err;
|
|
+}
|
|
+
|
|
+static int bgmac_stop(struct net_device *net_dev)
|
|
+{
|
|
+ struct bgmac *bgmac = netdev_priv(net_dev);
|
|
+
|
|
+ netif_carrier_off(net_dev);
|
|
+
|
|
+ napi_disable(&bgmac->napi);
|
|
+ bgmac_chip_intrs_off(bgmac);
|
|
+ free_irq(bgmac->core->irq, net_dev);
|
|
+
|
|
+ bgmac_chip_reset(bgmac);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static netdev_tx_t bgmac_start_xmit(struct sk_buff *skb,
|
|
+ struct net_device *net_dev)
|
|
+{
|
|
+ struct bgmac *bgmac = netdev_priv(net_dev);
|
|
+ struct bgmac_dma_ring *ring;
|
|
+
|
|
+ /* No QOS support yet */
|
|
+ ring = &bgmac->tx_ring[0];
|
|
+ return bgmac_dma_tx_add(bgmac, ring, skb);
|
|
+}
|
|
+
|
|
+static int bgmac_ioctl(struct net_device *net_dev, struct ifreq *ifr, int cmd)
|
|
+{
|
|
+ struct bgmac *bgmac = netdev_priv(net_dev);
|
|
+ struct mii_ioctl_data *data = if_mii(ifr);
|
|
+
|
|
+ switch (cmd) {
|
|
+ case SIOCGMIIPHY:
|
|
+ data->phy_id = bgmac->phyaddr;
|
|
+ /* fallthru */
|
|
+ case SIOCGMIIREG:
|
|
+ if (!netif_running(net_dev))
|
|
+ return -EAGAIN;
|
|
+ data->val_out = bgmac_phy_read(bgmac, data->phy_id,
|
|
+ data->reg_num & 0x1f);
|
|
+ return 0;
|
|
+ case SIOCSMIIREG:
|
|
+ if (!netif_running(net_dev))
|
|
+ return -EAGAIN;
|
|
+ bgmac_phy_write(bgmac, data->phy_id, data->reg_num & 0x1f,
|
|
+ data->val_in);
|
|
+ return 0;
|
|
+ default:
|
|
+ return -EOPNOTSUPP;
|
|
+ }
|
|
+}
|
|
+
|
|
+static const struct net_device_ops bgmac_netdev_ops = {
|
|
+ .ndo_open = bgmac_open,
|
|
+ .ndo_stop = bgmac_stop,
|
|
+ .ndo_start_xmit = bgmac_start_xmit,
|
|
+ .ndo_set_mac_address = eth_mac_addr, /* generic, sets dev_addr */
|
|
+ .ndo_do_ioctl = bgmac_ioctl,
|
|
+};
|
|
+
|
|
+/**************************************************
|
|
+ * ethtool_ops
|
|
+ **************************************************/
|
|
+
|
|
+static int bgmac_get_settings(struct net_device *net_dev,
|
|
+ struct ethtool_cmd *cmd)
|
|
+{
|
|
+ struct bgmac *bgmac = netdev_priv(net_dev);
|
|
+
|
|
+ cmd->supported = SUPPORTED_10baseT_Half |
|
|
+ SUPPORTED_10baseT_Full |
|
|
+ SUPPORTED_100baseT_Half |
|
|
+ SUPPORTED_100baseT_Full |
|
|
+ SUPPORTED_1000baseT_Half |
|
|
+ SUPPORTED_1000baseT_Full |
|
|
+ SUPPORTED_Autoneg;
|
|
+
|
|
+ if (bgmac->autoneg) {
|
|
+ WARN_ON(cmd->advertising);
|
|
+ if (bgmac->full_duplex) {
|
|
+ if (bgmac->speed & BGMAC_SPEED_10)
|
|
+ cmd->advertising |= ADVERTISED_10baseT_Full;
|
|
+ if (bgmac->speed & BGMAC_SPEED_100)
|
|
+ cmd->advertising |= ADVERTISED_100baseT_Full;
|
|
+ if (bgmac->speed & BGMAC_SPEED_1000)
|
|
+ cmd->advertising |= ADVERTISED_1000baseT_Full;
|
|
+ } else {
|
|
+ if (bgmac->speed & BGMAC_SPEED_10)
|
|
+ cmd->advertising |= ADVERTISED_10baseT_Half;
|
|
+ if (bgmac->speed & BGMAC_SPEED_100)
|
|
+ cmd->advertising |= ADVERTISED_100baseT_Half;
|
|
+ if (bgmac->speed & BGMAC_SPEED_1000)
|
|
+ cmd->advertising |= ADVERTISED_1000baseT_Half;
|
|
+ }
|
|
+ } else {
|
|
+ switch (bgmac->speed) {
|
|
+ case BGMAC_SPEED_10:
|
|
+ ethtool_cmd_speed_set(cmd, SPEED_10);
|
|
+ break;
|
|
+ case BGMAC_SPEED_100:
|
|
+ ethtool_cmd_speed_set(cmd, SPEED_100);
|
|
+ break;
|
|
+ case BGMAC_SPEED_1000:
|
|
+ ethtool_cmd_speed_set(cmd, SPEED_1000);
|
|
+ break;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ cmd->duplex = bgmac->full_duplex ? DUPLEX_FULL : DUPLEX_HALF;
|
|
+
|
|
+ cmd->autoneg = bgmac->autoneg;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+#if 0
|
|
+static int bgmac_set_settings(struct net_device *net_dev,
|
|
+ struct ethtool_cmd *cmd)
|
|
+{
|
|
+ struct bgmac *bgmac = netdev_priv(net_dev);
|
|
+
|
|
+ return -1;
|
|
+}
|
|
+#endif
|
|
+
|
|
+static void bgmac_get_drvinfo(struct net_device *net_dev,
|
|
+ struct ethtool_drvinfo *info)
|
|
+{
|
|
+ strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
|
|
+ strlcpy(info->bus_info, "BCMA", sizeof(info->bus_info));
|
|
+}
|
|
+
|
|
+static const struct ethtool_ops bgmac_ethtool_ops = {
|
|
+ .get_settings = bgmac_get_settings,
|
|
+ .get_drvinfo = bgmac_get_drvinfo,
|
|
+};
|
|
+
|
|
+/**************************************************
|
|
+ * BCMA bus ops
|
|
+ **************************************************/
|
|
+
|
|
+/* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipattach */
|
|
+static int bgmac_probe(struct bcma_device *core)
|
|
+{
|
|
+ struct net_device *net_dev;
|
|
+ struct bgmac *bgmac;
|
|
+ struct ssb_sprom *sprom = &core->bus->sprom;
|
|
+ u8 *mac = core->core_unit ? sprom->et1mac : sprom->et0mac;
|
|
+ int err;
|
|
+
|
|
+ /* We don't support 2nd, 3rd, ... units, SPROM has to be adjusted */
|
|
+ if (core->core_unit > 1) {
|
|
+ pr_err("Unsupported core_unit %d\n", core->core_unit);
|
|
+ return -ENOTSUPP;
|
|
+ }
|
|
+
|
|
+ /* Allocation and references */
|
|
+ net_dev = alloc_etherdev(sizeof(*bgmac));
|
|
+ if (!net_dev)
|
|
+ return -ENOMEM;
|
|
+ net_dev->netdev_ops = &bgmac_netdev_ops;
|
|
+ net_dev->irq = core->irq;
|
|
+ SET_ETHTOOL_OPS(net_dev, &bgmac_ethtool_ops);
|
|
+ bgmac = netdev_priv(net_dev);
|
|
+ bgmac->net_dev = net_dev;
|
|
+ bgmac->core = core;
|
|
+ bcma_set_drvdata(core, bgmac);
|
|
+
|
|
+ /* Defaults */
|
|
+ bgmac->autoneg = true;
|
|
+ bgmac->full_duplex = true;
|
|
+ bgmac->speed = BGMAC_SPEED_10 | BGMAC_SPEED_100 | BGMAC_SPEED_1000;
|
|
+ memcpy(bgmac->net_dev->dev_addr, mac, ETH_ALEN);
|
|
+
|
|
+ /* On BCM4706 we need common core to access PHY */
|
|
+ if (core->id.id == BCMA_CORE_4706_MAC_GBIT &&
|
|
+ !core->bus->drv_gmac_cmn.core) {
|
|
+ bgmac_err(bgmac, "GMAC CMN core not found (required for BCM4706)\n");
|
|
+ err = -ENODEV;
|
|
+ goto err_netdev_free;
|
|
+ }
|
|
+ bgmac->cmn = core->bus->drv_gmac_cmn.core;
|
|
+
|
|
+ bgmac->phyaddr = core->core_unit ? sprom->et1phyaddr :
|
|
+ sprom->et0phyaddr;
|
|
+ bgmac->phyaddr &= BGMAC_PHY_MASK;
|
|
+ if (bgmac->phyaddr == BGMAC_PHY_MASK) {
|
|
+ bgmac_err(bgmac, "No PHY found\n");
|
|
+ err = -ENODEV;
|
|
+ goto err_netdev_free;
|
|
+ }
|
|
+ bgmac_info(bgmac, "Found PHY addr: %d%s\n", bgmac->phyaddr,
|
|
+ bgmac->phyaddr == BGMAC_PHY_NOREGS ? " (NOREGS)" : "");
|
|
+
|
|
+ if (core->bus->hosttype == BCMA_HOSTTYPE_PCI) {
|
|
+ bgmac_err(bgmac, "PCI setup not implemented\n");
|
|
+ err = -ENOTSUPP;
|
|
+ goto err_netdev_free;
|
|
+ }
|
|
+
|
|
+ bgmac_chip_reset(bgmac);
|
|
+
|
|
+ err = bgmac_dma_alloc(bgmac);
|
|
+ if (err) {
|
|
+ bgmac_err(bgmac, "Unable to alloc memory for DMA\n");
|
|
+ goto err_netdev_free;
|
|
+ }
|
|
+
|
|
+ bgmac->int_mask = BGMAC_IS_ERRMASK | BGMAC_IS_RX | BGMAC_IS_TX_MASK;
|
|
+ if (bcm47xx_nvram_getenv("et0_no_txint", NULL, 0) == 0)
|
|
+ bgmac->int_mask &= ~BGMAC_IS_TX_MASK;
|
|
+
|
|
+ /* TODO: reset the external phy. Specs are needed */
|
|
+ bgmac_phy_reset(bgmac);
|
|
+
|
|
+ bgmac->has_robosw = !!(core->bus->sprom.boardflags_lo &
|
|
+ BGMAC_BFL_ENETROBO);
|
|
+ if (bgmac->has_robosw)
|
|
+ bgmac_warn(bgmac, "Support for Roboswitch not implemented\n");
|
|
+
|
|
+ if (core->bus->sprom.boardflags_lo & BGMAC_BFL_ENETADM)
|
|
+ bgmac_warn(bgmac, "Support for ADMtek ethernet switch not implemented\n");
|
|
+
|
|
+ err = register_netdev(bgmac->net_dev);
|
|
+ if (err) {
|
|
+ bgmac_err(bgmac, "Cannot register net device\n");
|
|
+ err = -ENOTSUPP;
|
|
+ goto err_dma_free;
|
|
+ }
|
|
+
|
|
+ netif_carrier_off(net_dev);
|
|
+
|
|
+ netif_napi_add(net_dev, &bgmac->napi, bgmac_poll, BGMAC_WEIGHT);
|
|
+
|
|
+ return 0;
|
|
+
|
|
+err_dma_free:
|
|
+ bgmac_dma_free(bgmac);
|
|
+
|
|
+err_netdev_free:
|
|
+ bcma_set_drvdata(core, NULL);
|
|
+ free_netdev(net_dev);
|
|
+
|
|
+ return err;
|
|
+}
|
|
+
|
|
+static void bgmac_remove(struct bcma_device *core)
|
|
+{
|
|
+ struct bgmac *bgmac = bcma_get_drvdata(core);
|
|
+
|
|
+ netif_napi_del(&bgmac->napi);
|
|
+ unregister_netdev(bgmac->net_dev);
|
|
+ bgmac_dma_free(bgmac);
|
|
+ bcma_set_drvdata(core, NULL);
|
|
+ free_netdev(bgmac->net_dev);
|
|
+}
|
|
+
|
|
+static struct bcma_driver bgmac_bcma_driver = {
|
|
+ .name = KBUILD_MODNAME,
|
|
+ .id_table = bgmac_bcma_tbl,
|
|
+ .probe = bgmac_probe,
|
|
+ .remove = bgmac_remove,
|
|
+};
|
|
+
|
|
+static int __init bgmac_init(void)
|
|
+{
|
|
+ int err;
|
|
+
|
|
+ err = bcma_driver_register(&bgmac_bcma_driver);
|
|
+ if (err)
|
|
+ return err;
|
|
+ pr_info("Broadcom 47xx GBit MAC driver loaded\n");
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static void __exit bgmac_exit(void)
|
|
+{
|
|
+ bcma_driver_unregister(&bgmac_bcma_driver);
|
|
+}
|
|
+
|
|
+module_init(bgmac_init)
|
|
+module_exit(bgmac_exit)
|
|
+
|
|
+MODULE_AUTHOR("Rafał Miłecki");
|
|
+MODULE_LICENSE("GPL");
|
|
--- /dev/null
|
|
+++ b/drivers/net/ethernet/broadcom/bgmac.h
|
|
@@ -0,0 +1,456 @@
|
|
+#ifndef _BGMAC_H
|
|
+#define _BGMAC_H
|
|
+
|
|
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
+
|
|
+#define bgmac_err(bgmac, fmt, ...) \
|
|
+ dev_err(&(bgmac)->core->dev, fmt, ##__VA_ARGS__)
|
|
+#define bgmac_warn(bgmac, fmt, ...) \
|
|
+ dev_warn(&(bgmac)->core->dev, fmt, ##__VA_ARGS__)
|
|
+#define bgmac_info(bgmac, fmt, ...) \
|
|
+ dev_info(&(bgmac)->core->dev, fmt, ##__VA_ARGS__)
|
|
+#define bgmac_dbg(bgmac, fmt, ...) \
|
|
+ dev_dbg(&(bgmac)->core->dev, fmt, ##__VA_ARGS__)
|
|
+
|
|
+#include <linux/bcma/bcma.h>
|
|
+#include <linux/netdevice.h>
|
|
+
|
|
+#define BGMAC_DEV_CTL 0x000
|
|
+#define BGMAC_DC_TSM 0x00000002
|
|
+#define BGMAC_DC_CFCO 0x00000004
|
|
+#define BGMAC_DC_RLSS 0x00000008
|
|
+#define BGMAC_DC_MROR 0x00000010
|
|
+#define BGMAC_DC_FCM_MASK 0x00000060
|
|
+#define BGMAC_DC_FCM_SHIFT 5
|
|
+#define BGMAC_DC_NAE 0x00000080
|
|
+#define BGMAC_DC_TF 0x00000100
|
|
+#define BGMAC_DC_RDS_MASK 0x00030000
|
|
+#define BGMAC_DC_RDS_SHIFT 16
|
|
+#define BGMAC_DC_TDS_MASK 0x000c0000
|
|
+#define BGMAC_DC_TDS_SHIFT 18
|
|
+#define BGMAC_DEV_STATUS 0x004 /* Configuration of the interface */
|
|
+#define BGMAC_DS_RBF 0x00000001
|
|
+#define BGMAC_DS_RDF 0x00000002
|
|
+#define BGMAC_DS_RIF 0x00000004
|
|
+#define BGMAC_DS_TBF 0x00000008
|
|
+#define BGMAC_DS_TDF 0x00000010
|
|
+#define BGMAC_DS_TIF 0x00000020
|
|
+#define BGMAC_DS_PO 0x00000040
|
|
+#define BGMAC_DS_MM_MASK 0x00000300 /* Mode of the interface */
|
|
+#define BGMAC_DS_MM_SHIFT 8
|
|
+#define BGMAC_BIST_STATUS 0x00c
|
|
+#define BGMAC_INT_STATUS 0x020 /* Interrupt status */
|
|
+#define BGMAC_IS_MRO 0x00000001
|
|
+#define BGMAC_IS_MTO 0x00000002
|
|
+#define BGMAC_IS_TFD 0x00000004
|
|
+#define BGMAC_IS_LS 0x00000008
|
|
+#define BGMAC_IS_MDIO 0x00000010
|
|
+#define BGMAC_IS_MR 0x00000020
|
|
+#define BGMAC_IS_MT 0x00000040
|
|
+#define BGMAC_IS_TO 0x00000080
|
|
+#define BGMAC_IS_DESC_ERR 0x00000400 /* Descriptor error */
|
|
+#define BGMAC_IS_DATA_ERR 0x00000800 /* Data error */
|
|
+#define BGMAC_IS_DESC_PROT_ERR 0x00001000 /* Descriptor protocol error */
|
|
+#define BGMAC_IS_RX_DESC_UNDERF 0x00002000 /* Receive descriptor underflow */
|
|
+#define BGMAC_IS_RX_F_OVERF 0x00004000 /* Receive FIFO overflow */
|
|
+#define BGMAC_IS_TX_F_UNDERF 0x00008000 /* Transmit FIFO underflow */
|
|
+#define BGMAC_IS_RX 0x00010000 /* Interrupt for RX queue 0 */
|
|
+#define BGMAC_IS_TX0 0x01000000 /* Interrupt for TX queue 0 */
|
|
+#define BGMAC_IS_TX1 0x02000000 /* Interrupt for TX queue 1 */
|
|
+#define BGMAC_IS_TX2 0x04000000 /* Interrupt for TX queue 2 */
|
|
+#define BGMAC_IS_TX3 0x08000000 /* Interrupt for TX queue 3 */
|
|
+#define BGMAC_IS_TX_MASK 0x0f000000
|
|
+#define BGMAC_IS_INTMASK 0x0f01fcff
|
|
+#define BGMAC_IS_ERRMASK 0x0000fc00
|
|
+#define BGMAC_INT_MASK 0x024 /* Interrupt mask */
|
|
+#define BGMAC_GP_TIMER 0x028
|
|
+#define BGMAC_INT_RECV_LAZY 0x100
|
|
+#define BGMAC_IRL_TO_MASK 0x00ffffff
|
|
+#define BGMAC_IRL_FC_MASK 0xff000000
|
|
+#define BGMAC_IRL_FC_SHIFT 24 /* Shift the number of interrupts triggered per received frame */
|
|
+#define BGMAC_FLOW_CTL_THRESH 0x104 /* Flow control thresholds */
|
|
+#define BGMAC_WRRTHRESH 0x108
|
|
+#define BGMAC_GMAC_IDLE_CNT_THRESH 0x10c
|
|
+#define BGMAC_PHY_ACCESS 0x180 /* PHY access address */
|
|
+#define BGMAC_PA_DATA_MASK 0x0000ffff
|
|
+#define BGMAC_PA_ADDR_MASK 0x001f0000
|
|
+#define BGMAC_PA_ADDR_SHIFT 16
|
|
+#define BGMAC_PA_REG_MASK 0x1f000000
|
|
+#define BGMAC_PA_REG_SHIFT 24
|
|
+#define BGMAC_PA_WRITE 0x20000000
|
|
+#define BGMAC_PA_START 0x40000000
|
|
+#define BGMAC_PHY_CNTL 0x188 /* PHY control address */
|
|
+#define BGMAC_PC_EPA_MASK 0x0000001f
|
|
+#define BGMAC_PC_MCT_MASK 0x007f0000
|
|
+#define BGMAC_PC_MCT_SHIFT 16
|
|
+#define BGMAC_PC_MTE 0x00800000
|
|
+#define BGMAC_TXQ_CTL 0x18c
|
|
+#define BGMAC_TXQ_CTL_DBT_MASK 0x00000fff
|
|
+#define BGMAC_TXQ_CTL_DBT_SHIFT 0
|
|
+#define BGMAC_RXQ_CTL 0x190
|
|
+#define BGMAC_RXQ_CTL_DBT_MASK 0x00000fff
|
|
+#define BGMAC_RXQ_CTL_DBT_SHIFT 0
|
|
+#define BGMAC_RXQ_CTL_PTE 0x00001000
|
|
+#define BGMAC_RXQ_CTL_MDP_MASK 0x3f000000
|
|
+#define BGMAC_RXQ_CTL_MDP_SHIFT 24
|
|
+#define BGMAC_GPIO_SELECT 0x194
|
|
+#define BGMAC_GPIO_OUTPUT_EN 0x198
|
|
+/* For 0x1e0 see BCMA_CLKCTLST */
|
|
+#define BGMAC_HW_WAR 0x1e4
|
|
+#define BGMAC_PWR_CTL 0x1e8
|
|
+#define BGMAC_DMA_BASE0 0x200 /* Tx and Rx controller */
|
|
+#define BGMAC_DMA_BASE1 0x240 /* Tx controller only */
|
|
+#define BGMAC_DMA_BASE2 0x280 /* Tx controller only */
|
|
+#define BGMAC_DMA_BASE3 0x2C0 /* Tx controller only */
|
|
+#define BGMAC_TX_GOOD_OCTETS 0x300
|
|
+#define BGMAC_TX_GOOD_OCTETS_HIGH 0x304
|
|
+#define BGMAC_TX_GOOD_PKTS 0x308
|
|
+#define BGMAC_TX_OCTETS 0x30c
|
|
+#define BGMAC_TX_OCTETS_HIGH 0x310
|
|
+#define BGMAC_TX_PKTS 0x314
|
|
+#define BGMAC_TX_BROADCAST_PKTS 0x318
|
|
+#define BGMAC_TX_MULTICAST_PKTS 0x31c
|
|
+#define BGMAC_TX_LEN_64 0x320
|
|
+#define BGMAC_TX_LEN_65_TO_127 0x324
|
|
+#define BGMAC_TX_LEN_128_TO_255 0x328
|
|
+#define BGMAC_TX_LEN_256_TO_511 0x32c
|
|
+#define BGMAC_TX_LEN_512_TO_1023 0x330
|
|
+#define BGMAC_TX_LEN_1024_TO_1522 0x334
|
|
+#define BGMAC_TX_LEN_1523_TO_2047 0x338
|
|
+#define BGMAC_TX_LEN_2048_TO_4095 0x33c
|
|
+#define BGMAC_TX_LEN_4095_TO_8191 0x340
|
|
+#define BGMAC_TX_LEN_8192_TO_MAX 0x344
|
|
+#define BGMAC_TX_JABBER_PKTS 0x348 /* Error */
|
|
+#define BGMAC_TX_OVERSIZE_PKTS 0x34c /* Error */
|
|
+#define BGMAC_TX_FRAGMENT_PKTS 0x350
|
|
+#define BGMAC_TX_UNDERRUNS 0x354 /* Error */
|
|
+#define BGMAC_TX_TOTAL_COLS 0x358
|
|
+#define BGMAC_TX_SINGLE_COLS 0x35c
|
|
+#define BGMAC_TX_MULTIPLE_COLS 0x360
|
|
+#define BGMAC_TX_EXCESSIVE_COLS 0x364 /* Error */
|
|
+#define BGMAC_TX_LATE_COLS 0x368 /* Error */
|
|
+#define BGMAC_TX_DEFERED 0x36c
|
|
+#define BGMAC_TX_CARRIER_LOST 0x370
|
|
+#define BGMAC_TX_PAUSE_PKTS 0x374
|
|
+#define BGMAC_TX_UNI_PKTS 0x378
|
|
+#define BGMAC_TX_Q0_PKTS 0x37c
|
|
+#define BGMAC_TX_Q0_OCTETS 0x380
|
|
+#define BGMAC_TX_Q0_OCTETS_HIGH 0x384
|
|
+#define BGMAC_TX_Q1_PKTS 0x388
|
|
+#define BGMAC_TX_Q1_OCTETS 0x38c
|
|
+#define BGMAC_TX_Q1_OCTETS_HIGH 0x390
|
|
+#define BGMAC_TX_Q2_PKTS 0x394
|
|
+#define BGMAC_TX_Q2_OCTETS 0x398
|
|
+#define BGMAC_TX_Q2_OCTETS_HIGH 0x39c
|
|
+#define BGMAC_TX_Q3_PKTS 0x3a0
|
|
+#define BGMAC_TX_Q3_OCTETS 0x3a4
|
|
+#define BGMAC_TX_Q3_OCTETS_HIGH 0x3a8
|
|
+#define BGMAC_RX_GOOD_OCTETS 0x3b0
|
|
+#define BGMAC_RX_GOOD_OCTETS_HIGH 0x3b4
|
|
+#define BGMAC_RX_GOOD_PKTS 0x3b8
|
|
+#define BGMAC_RX_OCTETS 0x3bc
|
|
+#define BGMAC_RX_OCTETS_HIGH 0x3c0
|
|
+#define BGMAC_RX_PKTS 0x3c4
|
|
+#define BGMAC_RX_BROADCAST_PKTS 0x3c8
|
|
+#define BGMAC_RX_MULTICAST_PKTS 0x3cc
|
|
+#define BGMAC_RX_LEN_64 0x3d0
|
|
+#define BGMAC_RX_LEN_65_TO_127 0x3d4
|
|
+#define BGMAC_RX_LEN_128_TO_255 0x3d8
|
|
+#define BGMAC_RX_LEN_256_TO_511 0x3dc
|
|
+#define BGMAC_RX_LEN_512_TO_1023 0x3e0
|
|
+#define BGMAC_RX_LEN_1024_TO_1522 0x3e4
|
|
+#define BGMAC_RX_LEN_1523_TO_2047 0x3e8
|
|
+#define BGMAC_RX_LEN_2048_TO_4095 0x3ec
|
|
+#define BGMAC_RX_LEN_4095_TO_8191 0x3f0
|
|
+#define BGMAC_RX_LEN_8192_TO_MAX 0x3f4
|
|
+#define BGMAC_RX_JABBER_PKTS 0x3f8 /* Error */
|
|
+#define BGMAC_RX_OVERSIZE_PKTS 0x3fc /* Error */
|
|
+#define BGMAC_RX_FRAGMENT_PKTS 0x400
|
|
+#define BGMAC_RX_MISSED_PKTS 0x404 /* Error */
|
|
+#define BGMAC_RX_CRC_ALIGN_ERRS 0x408 /* Error */
|
|
+#define BGMAC_RX_UNDERSIZE 0x40c /* Error */
|
|
+#define BGMAC_RX_CRC_ERRS 0x410 /* Error */
|
|
+#define BGMAC_RX_ALIGN_ERRS 0x414 /* Error */
|
|
+#define BGMAC_RX_SYMBOL_ERRS 0x418 /* Error */
|
|
+#define BGMAC_RX_PAUSE_PKTS 0x41c
|
|
+#define BGMAC_RX_NONPAUSE_PKTS 0x420
|
|
+#define BGMAC_RX_SACHANGES 0x424
|
|
+#define BGMAC_RX_UNI_PKTS 0x428
|
|
+#define BGMAC_UNIMAC_VERSION 0x800
|
|
+#define BGMAC_HDBKP_CTL 0x804
|
|
+#define BGMAC_CMDCFG 0x808 /* Configuration */
|
|
+#define BGMAC_CMDCFG_TE 0x00000001 /* Set to activate TX */
|
|
+#define BGMAC_CMDCFG_RE 0x00000002 /* Set to activate RX */
|
|
+#define BGMAC_CMDCFG_ES_MASK 0x0000000c /* Ethernet speed see gmac_speed */
|
|
+#define BGMAC_CMDCFG_ES_10 0x00000000
|
|
+#define BGMAC_CMDCFG_ES_100 0x00000004
|
|
+#define BGMAC_CMDCFG_ES_1000 0x00000008
|
|
+#define BGMAC_CMDCFG_PROM 0x00000010 /* Set to activate promiscuous mode */
|
|
+#define BGMAC_CMDCFG_PAD_EN 0x00000020
|
|
+#define BGMAC_CMDCFG_CF 0x00000040
|
|
+#define BGMAC_CMDCFG_PF 0x00000080
|
|
+#define BGMAC_CMDCFG_RPI 0x00000100 /* Unset to enable 802.3x tx flow control */
|
|
+#define BGMAC_CMDCFG_TAI 0x00000200
|
|
+#define BGMAC_CMDCFG_HD 0x00000400 /* Set if in half duplex mode */
|
|
+#define BGMAC_CMDCFG_HD_SHIFT 10
|
|
+#define BGMAC_CMDCFG_SR 0x00000800 /* Set to reset mode */
|
|
+#define BGMAC_CMDCFG_ML 0x00008000 /* Set to activate mac loopback mode */
|
|
+#define BGMAC_CMDCFG_AE 0x00400000
|
|
+#define BGMAC_CMDCFG_CFE 0x00800000
|
|
+#define BGMAC_CMDCFG_NLC 0x01000000
|
|
+#define BGMAC_CMDCFG_RL 0x02000000
|
|
+#define BGMAC_CMDCFG_RED 0x04000000
|
|
+#define BGMAC_CMDCFG_PE 0x08000000
|
|
+#define BGMAC_CMDCFG_TPI 0x10000000
|
|
+#define BGMAC_CMDCFG_AT 0x20000000
|
|
+#define BGMAC_MACADDR_HIGH 0x80c /* High 4 octets of own mac address */
|
|
+#define BGMAC_MACADDR_LOW 0x810 /* Low 2 octets of own mac address */
|
|
+#define BGMAC_RXMAX_LENGTH 0x814 /* Max receive frame length with vlan tag */
|
|
+#define BGMAC_PAUSEQUANTA 0x818
|
|
+#define BGMAC_MAC_MODE 0x844
|
|
+#define BGMAC_OUTERTAG 0x848
|
|
+#define BGMAC_INNERTAG 0x84c
|
|
+#define BGMAC_TXIPG 0x85c
|
|
+#define BGMAC_PAUSE_CTL 0xb30
|
|
+#define BGMAC_TX_FLUSH 0xb34
|
|
+#define BGMAC_RX_STATUS 0xb38
|
|
+#define BGMAC_TX_STATUS 0xb3c
|
|
+
|
|
+#define BGMAC_PHY_CTL 0x00
|
|
+#define BGMAC_PHY_CTL_SPEED_MSB 0x0040
|
|
+#define BGMAC_PHY_CTL_DUPLEX 0x0100 /* duplex mode */
|
|
+#define BGMAC_PHY_CTL_RESTART 0x0200 /* restart autonegotiation */
|
|
+#define BGMAC_PHY_CTL_ANENAB 0x1000 /* enable autonegotiation */
|
|
+#define BGMAC_PHY_CTL_SPEED 0x2000
|
|
+#define BGMAC_PHY_CTL_LOOP 0x4000 /* loopback */
|
|
+#define BGMAC_PHY_CTL_RESET 0x8000 /* reset */
|
|
+/* Helpers */
|
|
+#define BGMAC_PHY_CTL_SPEED_10 0
|
|
+#define BGMAC_PHY_CTL_SPEED_100 BGMAC_PHY_CTL_SPEED
|
|
+#define BGMAC_PHY_CTL_SPEED_1000 BGMAC_PHY_CTL_SPEED_MSB
|
|
+#define BGMAC_PHY_ADV 0x04
|
|
+#define BGMAC_PHY_ADV_10HALF 0x0020 /* advertise 10MBits/s half duplex */
|
|
+#define BGMAC_PHY_ADV_10FULL 0x0040 /* advertise 10MBits/s full duplex */
|
|
+#define BGMAC_PHY_ADV_100HALF 0x0080 /* advertise 100MBits/s half duplex */
|
|
+#define BGMAC_PHY_ADV_100FULL 0x0100 /* advertise 100MBits/s full duplex */
|
|
+#define BGMAC_PHY_ADV2 0x09
|
|
+#define BGMAC_PHY_ADV2_1000HALF 0x0100 /* advertise 1000MBits/s half duplex */
|
|
+#define BGMAC_PHY_ADV2_1000FULL 0x0200 /* advertise 1000MBits/s full duplex */
|
|
+
|
|
+/* BCMA GMAC core specific IO Control (BCMA_IOCTL) flags */
|
|
+#define BGMAC_BCMA_IOCTL_SW_CLKEN 0x00000004 /* PHY Clock Enable */
|
|
+#define BGMAC_BCMA_IOCTL_SW_RESET 0x00000008 /* PHY Reset */
|
|
+
|
|
+/* BCMA GMAC core specific IO status (BCMA_IOST) flags */
|
|
+#define BGMAC_BCMA_IOST_ATTACHED 0x00000800
|
|
+
|
|
+#define BGMAC_NUM_MIB_TX_REGS \
|
|
+ (((BGMAC_TX_Q3_OCTETS_HIGH - BGMAC_TX_GOOD_OCTETS) / 4) + 1)
|
|
+#define BGMAC_NUM_MIB_RX_REGS \
|
|
+ (((BGMAC_RX_UNI_PKTS - BGMAC_RX_GOOD_OCTETS) / 4) + 1)
|
|
+
|
|
+#define BGMAC_DMA_TX_CTL 0x00
|
|
+#define BGMAC_DMA_TX_ENABLE 0x00000001
|
|
+#define BGMAC_DMA_TX_SUSPEND 0x00000002
|
|
+#define BGMAC_DMA_TX_LOOPBACK 0x00000004
|
|
+#define BGMAC_DMA_TX_FLUSH 0x00000010
|
|
+#define BGMAC_DMA_TX_PARITY_DISABLE 0x00000800
|
|
+#define BGMAC_DMA_TX_ADDREXT_MASK 0x00030000
|
|
+#define BGMAC_DMA_TX_ADDREXT_SHIFT 16
|
|
+#define BGMAC_DMA_TX_INDEX 0x04
|
|
+#define BGMAC_DMA_TX_RINGLO 0x08
|
|
+#define BGMAC_DMA_TX_RINGHI 0x0C
|
|
+#define BGMAC_DMA_TX_STATUS 0x10
|
|
+#define BGMAC_DMA_TX_STATDPTR 0x00001FFF
|
|
+#define BGMAC_DMA_TX_STAT 0xF0000000
|
|
+#define BGMAC_DMA_TX_STAT_DISABLED 0x00000000
|
|
+#define BGMAC_DMA_TX_STAT_ACTIVE 0x10000000
|
|
+#define BGMAC_DMA_TX_STAT_IDLEWAIT 0x20000000
|
|
+#define BGMAC_DMA_TX_STAT_STOPPED 0x30000000
|
|
+#define BGMAC_DMA_TX_STAT_SUSP 0x40000000
|
|
+#define BGMAC_DMA_TX_ERROR 0x14
|
|
+#define BGMAC_DMA_TX_ERRDPTR 0x0001FFFF
|
|
+#define BGMAC_DMA_TX_ERR 0xF0000000
|
|
+#define BGMAC_DMA_TX_ERR_NOERR 0x00000000
|
|
+#define BGMAC_DMA_TX_ERR_PROT 0x10000000
|
|
+#define BGMAC_DMA_TX_ERR_UNDERRUN 0x20000000
|
|
+#define BGMAC_DMA_TX_ERR_TRANSFER 0x30000000
|
|
+#define BGMAC_DMA_TX_ERR_DESCREAD 0x40000000
|
|
+#define BGMAC_DMA_TX_ERR_CORE 0x50000000
|
|
+#define BGMAC_DMA_RX_CTL 0x20
|
|
+#define BGMAC_DMA_RX_ENABLE 0x00000001
|
|
+#define BGMAC_DMA_RX_FRAME_OFFSET_MASK 0x000000FE
|
|
+#define BGMAC_DMA_RX_FRAME_OFFSET_SHIFT 1
|
|
+#define BGMAC_DMA_RX_DIRECT_FIFO 0x00000100
|
|
+#define BGMAC_DMA_RX_OVERFLOW_CONT 0x00000400
|
|
+#define BGMAC_DMA_RX_PARITY_DISABLE 0x00000800
|
|
+#define BGMAC_DMA_RX_ADDREXT_MASK 0x00030000
|
|
+#define BGMAC_DMA_RX_ADDREXT_SHIFT 16
|
|
+#define BGMAC_DMA_RX_INDEX 0x24
|
|
+#define BGMAC_DMA_RX_RINGLO 0x28
|
|
+#define BGMAC_DMA_RX_RINGHI 0x2C
|
|
+#define BGMAC_DMA_RX_STATUS 0x30
|
|
+#define BGMAC_DMA_RX_STATDPTR 0x00001FFF
|
|
+#define BGMAC_DMA_RX_STAT 0xF0000000
|
|
+#define BGMAC_DMA_RX_STAT_DISABLED 0x00000000
|
|
+#define BGMAC_DMA_RX_STAT_ACTIVE 0x10000000
|
|
+#define BGMAC_DMA_RX_STAT_IDLEWAIT 0x20000000
|
|
+#define BGMAC_DMA_RX_STAT_STOPPED 0x30000000
|
|
+#define BGMAC_DMA_RX_STAT_SUSP 0x40000000
|
|
+#define BGMAC_DMA_RX_ERROR 0x34
|
|
+#define BGMAC_DMA_RX_ERRDPTR 0x0001FFFF
|
|
+#define BGMAC_DMA_RX_ERR 0xF0000000
|
|
+#define BGMAC_DMA_RX_ERR_NOERR 0x00000000
|
|
+#define BGMAC_DMA_RX_ERR_PROT 0x10000000
|
|
+#define BGMAC_DMA_RX_ERR_UNDERRUN 0x20000000
|
|
+#define BGMAC_DMA_RX_ERR_TRANSFER 0x30000000
|
|
+#define BGMAC_DMA_RX_ERR_DESCREAD 0x40000000
|
|
+#define BGMAC_DMA_RX_ERR_CORE 0x50000000
|
|
+
|
|
+#define BGMAC_DESC_CTL0_EOT 0x10000000 /* End of ring */
|
|
+#define BGMAC_DESC_CTL0_IOC 0x20000000 /* IRQ on complete */
|
|
+#define BGMAC_DESC_CTL0_SOF 0x40000000 /* Start of frame */
|
|
+#define BGMAC_DESC_CTL0_EOF 0x80000000 /* End of frame */
|
|
+#define BGMAC_DESC_CTL1_LEN 0x00001FFF
|
|
+
|
|
+#define BGMAC_PHY_NOREGS 0x1E
|
|
+#define BGMAC_PHY_MASK 0x1F
|
|
+
|
|
+#define BGMAC_MAX_TX_RINGS 4
|
|
+#define BGMAC_MAX_RX_RINGS 1
|
|
+
|
|
+#define BGMAC_TX_RING_SLOTS 128
|
|
+#define BGMAC_RX_RING_SLOTS 512 - 1 /* Why -1? Well, Broadcom does that... */
|
|
+
|
|
+#define BGMAC_RX_HEADER_LEN 28 /* Last 24 bytes are unused. Well... */
|
|
+#define BGMAC_RX_FRAME_OFFSET 30 /* There are 2 unused bytes between header and real data */
|
|
+#define BGMAC_RX_MAX_FRAME_SIZE 1536 /* Copied from b44/tg3 */
|
|
+#define BGMAC_RX_BUF_SIZE (BGMAC_RX_FRAME_OFFSET + BGMAC_RX_MAX_FRAME_SIZE)
|
|
+
|
|
+#define BGMAC_BFL_ENETROBO 0x0010 /* has ephy roboswitch spi */
|
|
+#define BGMAC_BFL_ENETADM 0x0080 /* has ADMtek switch */
|
|
+#define BGMAC_BFL_ENETVLAN 0x0100 /* can do vlan */
|
|
+
|
|
+#define BGMAC_CHIPCTL_1_IF_TYPE_MASK 0x00000030
|
|
+#define BGMAC_CHIPCTL_1_IF_TYPE_RMII 0x00000000
|
|
+#define BGMAC_CHIPCTL_1_IF_TYPE_MI 0x00000010
|
|
+#define BGMAC_CHIPCTL_1_IF_TYPE_RGMII 0x00000020
|
|
+#define BGMAC_CHIPCTL_1_SW_TYPE_MASK 0x000000C0
|
|
+#define BGMAC_CHIPCTL_1_SW_TYPE_EPHY 0x00000000
|
|
+#define BGMAC_CHIPCTL_1_SW_TYPE_EPHYMII 0x00000040
|
|
+#define BGMAC_CHIPCTL_1_SW_TYPE_EPHYRMII 0x00000080
|
|
+#define BGMAC_CHIPCTL_1_SW_TYPE_RGMI 0x000000C0
|
|
+#define BGMAC_CHIPCTL_1_RXC_DLL_BYPASS 0x00010000
|
|
+
|
|
+#define BGMAC_SPEED_10 0x0001
|
|
+#define BGMAC_SPEED_100 0x0002
|
|
+#define BGMAC_SPEED_1000 0x0004
|
|
+
|
|
+#define BGMAC_WEIGHT 64
|
|
+
|
|
+#define ETHER_MAX_LEN 1518
|
|
+
|
|
+struct bgmac_slot_info {
|
|
+ struct sk_buff *skb;
|
|
+ dma_addr_t dma_addr;
|
|
+};
|
|
+
|
|
+struct bgmac_dma_desc {
|
|
+ __le32 ctl0;
|
|
+ __le32 ctl1;
|
|
+ __le32 addr_low;
|
|
+ __le32 addr_high;
|
|
+} __packed;
|
|
+
|
|
+enum bgmac_dma_ring_type {
|
|
+ BGMAC_DMA_RING_TX,
|
|
+ BGMAC_DMA_RING_RX,
|
|
+};
|
|
+
|
|
+/**
|
|
+ * bgmac_dma_ring - contains info about DMA ring (either TX or RX one)
|
|
+ * @start: index of the first slot containing data
|
|
+ * @end: index of a slot that can *not* be read (yet)
|
|
+ *
|
|
+ * Be really aware of the specific @end meaning. It's an index of a slot *after*
|
|
+ * the one containing data that can be read. If @start equals @end the ring is
|
|
+ * empty.
|
|
+ */
|
|
+struct bgmac_dma_ring {
|
|
+ u16 num_slots;
|
|
+ u16 start;
|
|
+ u16 end;
|
|
+
|
|
+ u16 mmio_base;
|
|
+ struct bgmac_dma_desc *cpu_base;
|
|
+ dma_addr_t dma_base;
|
|
+
|
|
+ struct bgmac_slot_info slots[BGMAC_RX_RING_SLOTS];
|
|
+};
|
|
+
|
|
+struct bgmac_rx_header {
|
|
+ __le16 len;
|
|
+ __le16 flags;
|
|
+ __le16 pad[12];
|
|
+};
|
|
+
|
|
+struct bgmac {
|
|
+ struct bcma_device *core;
|
|
+ struct bcma_device *cmn; /* Reference to CMN core for BCM4706 */
|
|
+ struct net_device *net_dev;
|
|
+ struct napi_struct napi;
|
|
+
|
|
+ /* DMA */
|
|
+ struct bgmac_dma_ring tx_ring[BGMAC_MAX_TX_RINGS];
|
|
+ struct bgmac_dma_ring rx_ring[BGMAC_MAX_RX_RINGS];
|
|
+
|
|
+ /* Stats */
|
|
+ bool stats_grabbed;
|
|
+ u32 mib_tx_regs[BGMAC_NUM_MIB_TX_REGS];
|
|
+ u32 mib_rx_regs[BGMAC_NUM_MIB_RX_REGS];
|
|
+
|
|
+ /* Int */
|
|
+ u32 int_mask;
|
|
+ u32 int_status;
|
|
+
|
|
+ /* Speed-related */
|
|
+ int speed;
|
|
+ bool autoneg;
|
|
+ bool full_duplex;
|
|
+
|
|
+ u8 phyaddr;
|
|
+ bool has_robosw;
|
|
+
|
|
+ bool loopback;
|
|
+};
|
|
+
|
|
+static inline u32 bgmac_read(struct bgmac *bgmac, u16 offset)
|
|
+{
|
|
+ return bcma_read32(bgmac->core, offset);
|
|
+}
|
|
+
|
|
+static inline void bgmac_write(struct bgmac *bgmac, u16 offset, u32 value)
|
|
+{
|
|
+ bcma_write32(bgmac->core, offset, value);
|
|
+}
|
|
+
|
|
+static inline void bgmac_maskset(struct bgmac *bgmac, u16 offset, u32 mask,
|
|
+ u32 set)
|
|
+{
|
|
+ bgmac_write(bgmac, offset, (bgmac_read(bgmac, offset) & mask) | set);
|
|
+}
|
|
+
|
|
+static inline void bgmac_mask(struct bgmac *bgmac, u16 offset, u32 mask)
|
|
+{
|
|
+ bgmac_maskset(bgmac, offset, mask, 0);
|
|
+}
|
|
+
|
|
+static inline void bgmac_set(struct bgmac *bgmac, u16 offset, u32 set)
|
|
+{
|
|
+ bgmac_maskset(bgmac, offset, ~0, set);
|
|
+}
|
|
+
|
|
+u16 bgmac_phy_read(struct bgmac *bgmac, u8 phyaddr, u8 reg);
|
|
+void bgmac_phy_write(struct bgmac *bgmac, u8 phyaddr, u8 reg, u16 value);
|
|
+
|
|
+#endif /* _BGMAC_H */
|
|
|