brcm47xx: add bgmac driver

This Ethernet driver is in early development stage and still has some problems.
This was working on my bcm4716 based device.

Thanks to Rafał Miłecki <zajec5@gmail.com> for writing this driver.


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34995 3c298f89-4303-0410-b956-a3cf2f4a3e73

5 files changed, 1698 insertions, 0 deletions

diff --git a/target/linux/brcm47xx/base-files/lib/preinit/05_init_interfaces_brcm b/target/linux/brcm47xx/base-files/lib/preinit/05_init_interfaces_brcm
index d4a3b682c8..dca36b7114 100644
--- a/target/linux/brcm47xx/base-files/lib/preinit/05_init_interfaces_brcm
+++ b/target/linux/brcm47xx/base-files/lib/preinit/05_init_interfaces_brcm
@@ -7,6 +7,7 @@ set_preinit_iface() {
 	insmod hwmon
 	insmod tg3
 	insmod b44
+	insmod bgmac
 
 	# hardware specific overrides
 	case "$(cat /proc/diag/model)" in
diff --git a/target/linux/brcm47xx/modules.mk b/target/linux/brcm47xx/modules.mk
index abc2c9c003..2ea637df05 100644
--- a/target/linux/brcm47xx/modules.mk
+++ b/target/linux/brcm47xx/modules.mk
@@ -36,3 +36,18 @@ define KernelPackage/ocf-ubsec-ssb/description
 endef
 
 $(eval $(call KernelPackage,ocf-ubsec-ssb))
+
+define KernelPackage/bgmac
+  TITLE:=Broadcom bgmac driver
+  KCONFIG:=CONFIG_BGMAC
+  DEPENDS:=@TARGET_brcm47xx
+  SUBMENU:=$(NETWORK_DEVICES_MENU)
+  FILES:=$(LINUX_DIR)/drivers/net/ethernet/broadcom/bgmac.ko
+  AUTOLOAD:=$(call AutoLoad,50,bgmac)
+endef
+
+define KernelPackage/bgmac/description
+ Kernel modules for Broadcom bgmac Ethernet adapters.
+endef
+
+$(eval $(call KernelPackage,bgmac))
diff --git a/target/linux/brcm47xx/patches-3.6/750-bgmac.patch b/target/linux/brcm47xx/patches-3.6/750-bgmac.patch
new file mode 100644
index 0000000000..13698dbf74
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.6/750-bgmac.patch
@@ -0,0 +1,1680 @@
+--- a/drivers/bcma/driver_chipcommon_pmu.c
++++ b/drivers/bcma/driver_chipcommon_pmu.c
+@@ -263,7 +263,7 @@ static u32 bcma_pmu_pll_clock_bcm4706(st
+ }
+ 
+ /* query bus clock frequency for PMU-enabled chipcommon */
+-static u32 bcma_pmu_get_bus_clock(struct bcma_drv_cc *cc)
++u32 bcma_pmu_get_bus_clock(struct bcma_drv_cc *cc)
+ {
+ 	struct bcma_bus *bus = cc->core->bus;
+ 
+@@ -292,6 +292,7 @@ static u32 bcma_pmu_get_bus_clock(struct
+ 	}
+ 	return BCMA_CC_PMU_HT_CLOCK;
+ }
++EXPORT_SYMBOL_GPL(bcma_pmu_get_bus_clock);
+ 
+ /* query cpu clock frequency for PMU-enabled chipcommon */
+ u32 bcma_pmu_get_cpu_clock(struct bcma_drv_cc *cc)
+--- a/drivers/net/ethernet/broadcom/Kconfig
++++ b/drivers/net/ethernet/broadcom/Kconfig
+@@ -120,4 +120,10 @@ config BNX2X
+ 	  To compile this driver as a module, choose M here: the module
+ 	  will be called bnx2x.  This is recommended.
+ 
++config BGMAC
++	tristate "Broadcom Gigabit driver"
++	depends on BCMA
++	---help---
++	  This driver supports Broadcom Gigabit core found in some BCM47xx SoCs.
++
+ endif # NET_VENDOR_BROADCOM
+--- a/drivers/net/ethernet/broadcom/Makefile
++++ b/drivers/net/ethernet/broadcom/Makefile
+@@ -9,3 +9,4 @@ obj-$(CONFIG_CNIC) += cnic.o
+ obj-$(CONFIG_BNX2X) += bnx2x/
+ obj-$(CONFIG_SB1250_MAC) += sb1250-mac.o
+ obj-$(CONFIG_TIGON3) += tg3.o
++obj-$(CONFIG_BGMAC) += bgmac.o
+--- /dev/null
++++ b/drivers/net/ethernet/broadcom/bgmac.c
+@@ -0,0 +1,1202 @@
++#define pr_fmt(fmt)		KBUILD_MODNAME ": " fmt
++
++#define bgmac_err(bgmac, fmt, ...) \
++	pr_err("u%d: " fmt, (bgmac)->core->core_unit, ##__VA_ARGS__)
++#define bgmac_warn(bgmac, fmt, ...) \
++	pr_warn("u%d: " fmt, (bgmac)->core->core_unit, ##__VA_ARGS__)
++#define bgmac_info(bgmac, fmt, ...) \
++	pr_info("u%d: " fmt, (bgmac)->core->core_unit, ##__VA_ARGS__)
++#define bgmac_debug(bgmac, fmt, ...) \
++	pr_debug("u%d: " fmt, (bgmac)->core->core_unit, ##__VA_ARGS__)
++
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/delay.h>
++#include <linux/etherdevice.h>
++#include <linux/mii.h>
++#include <linux/interrupt.h>
++#include <linux/dma-mapping.h>
++#include <bcm47xx_nvram.h>
++
++#include "bgmac.h"
++
++#define ETHER_MAX_LEN   1518
++
++MODULE_LICENSE("GPL");
++
++static const struct bcma_device_id bgmac_bcma_tbl[] = {
++	BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_4706_MAC_GBIT, BCMA_ANY_REV, BCMA_ANY_CLASS),
++	BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_MAC_GBIT, BCMA_ANY_REV, BCMA_ANY_CLASS),
++	BCMA_CORETABLE_END
++};
++MODULE_DEVICE_TABLE(bcma, bgmac_bcma_tbl);
++
++static bool bgmac_wait_value(struct bcma_device *core, u16 reg, u32 mask,
++			     u32 value, int timeout)
++{
++	u32 val;
++	int i;
++
++	for (i = 0; i < timeout / 10; i++) {
++		val = bcma_read32(core, reg);
++		if ((val & mask) == value)
++			return true;
++		udelay(10);
++	}
++	pr_err("Timeout waiting for reg 0x%X\n", reg);
++	return false;
++}
++
++/**************************************************
++ * DMA
++ **************************************************/
++
++static void bgmac_dma_tx_reset(struct bgmac *bgmac, struct bgmac_dma_ring *ring)
++{
++	u32 val;
++	int i;
++
++	if (!ring->mmio_base)
++		return;
++
++	/* Susend DMA TX ring first.
++	 * bgmac_wait_value doesn't support waiting for any of few values, so
++	 * implement whole loop here.
++	 */
++	bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_CTL,
++		    BGMAC_DMA_TX_SUSPEND);
++	for (i = 0; i < 10000 / 10; i++) {
++		val = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_STATUS);
++		if (val == BGMAC_DMA_TX_STAT_DISABLED ||
++		    val == BGMAC_DMA_TX_STAT_IDLEWAIT ||
++		    val == BGMAC_DMA_TX_STAT_STOPPED) {
++			i = 0;
++			break;
++		}
++		udelay(10);
++	}
++	if (i)
++		bgmac_err(bgmac, "Timeout suspending DMA TX ring 0x%X\n", ring->mmio_base);
++
++	/* Remove SUSPEND bit */
++	bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_CTL, 0);
++	if (!bgmac_wait_value(bgmac->core,
++			      ring->mmio_base + BGMAC_DMA_TX_STATUS,
++			      BGMAC_DMA_TX_STAT, BGMAC_DMA_TX_STAT_DISABLED,
++			      10000)) {
++		bgmac_warn(bgmac, "DMA TX ring 0x%X wasn't disabled on time, waiting additional 300us\n", ring->mmio_base);
++		udelay(300);
++		val = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_STATUS);
++		if ((val & BGMAC_DMA_TX_STAT) != BGMAC_DMA_TX_STAT_DISABLED)
++			bgmac_err(bgmac, "Reset of DMA TX ring 0x%X failed\n", ring->mmio_base);
++	}
++}
++
++static void bgmac_dma_tx_enable(struct bgmac *bgmac,
++				struct bgmac_dma_ring *ring)
++{
++	u32 ctl;
++
++	ctl = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_CTL);
++	ctl |= BGMAC_DMA_TX_ENABLE;
++	ctl |= BGMAC_DMA_TX_PARITY_DISABLE;
++	bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_CTL, ctl);
++}
++
++static netdev_tx_t bgmac_dma_tx_add(struct bgmac *bgmac,
++				    struct bgmac_dma_ring *ring,
++				    struct sk_buff *skb)
++{
++	struct device *dma_dev = bgmac->core->dma_dev;
++	struct bgmac_dma_desc *dma_desc;
++	struct bgmac_slot_info *slot;
++	u32 ctl0, ctl1;
++	int free_slots;
++
++	if (skb->len > BGMAC_DESC_CTL1_LEN) {
++		bgmac_err(bgmac, "Too long skb (%d)\n", skb->len);
++		return NETDEV_TX_BUSY;
++	}
++
++	if (ring->start <= ring->end)
++		free_slots = ring->start - ring->end + BGMAC_TX_RING_SLOTS;
++	else
++		free_slots = ring->start - ring->end;
++	if (free_slots <= 1) {
++		bgmac_err(bgmac, "No free slots on ring 0x%X!\n", ring->mmio_base);
++		netif_stop_queue(bgmac->net_dev);
++		return NETDEV_TX_BUSY;
++	}
++
++	slot = &ring->slots[ring->end];
++	slot->skb = skb;
++	slot->dma_addr = dma_map_single(dma_dev, skb->data, skb->len, DMA_TO_DEVICE);
++	if (dma_mapping_error(dma_dev, slot->dma_addr)) {
++		bgmac_err(bgmac, "Mapping error of skb on ring 0x%X\n", ring->mmio_base);
++		return NETDEV_TX_BUSY;
++	}
++
++	ctl0 = BGMAC_DESC_CTL0_IOC | BGMAC_DESC_CTL0_SOF | BGMAC_DESC_CTL0_EOF;
++	if (ring->end == ring->num_slots - 1)
++		ctl0 |= BGMAC_DESC_CTL0_EOT;
++	ctl1 = skb->len & BGMAC_DESC_CTL1_LEN;
++
++	dma_desc = ring->cpu_base;
++	dma_desc += ring->end;
++	dma_desc->addr_low = cpu_to_le32(lower_32_bits(slot->dma_addr));
++	dma_desc->addr_high = cpu_to_le32(upper_32_bits(slot->dma_addr));
++	dma_desc->ctl0 = cpu_to_le32(ctl0);
++	dma_desc->ctl1 = cpu_to_le32(ctl1);
++
++	wmb();
++
++	/* Increase ring->end to point empty slot. We tell hardware the first
++	 * slot it shold *not* read.
++	 */
++	if (++ring->end >= BGMAC_TX_RING_SLOTS)
++		ring->end = 0;
++	bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_INDEX,
++		    ring->end * sizeof(struct bgmac_dma_desc));
++
++	return NETDEV_TX_OK;
++}
++
++/* Free transmitted packets */
++static void bgmac_dma_tx_free(struct bgmac *bgmac, struct bgmac_dma_ring *ring)
++{
++	struct device *dma_dev = bgmac->core->dma_dev;
++	struct bgmac_dma_desc *dma_desc;
++	struct bgmac_slot_info *slot;
++	int empty_slot;
++
++	/* The last slot that hardware didn't consume yet */
++	empty_slot = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_STATUS);
++	empty_slot &= BGMAC_DMA_TX_STATDPTR;
++	empty_slot /= sizeof(struct bgmac_dma_desc);
++
++	while (ring->start != empty_slot) {
++		/* Set pointers */
++		dma_desc = ring->cpu_base;
++		dma_desc += ring->start;
++		slot = &ring->slots[ring->start];
++
++		if (slot->skb) {
++			/* Unmap no longer used buffer */
++			dma_unmap_single(dma_dev, slot->dma_addr,
++					 slot->skb->len, DMA_TO_DEVICE);
++			slot->dma_addr = 0;
++
++			/* Free memory!  */
++			dev_kfree_skb_any(slot->skb);
++			slot->skb = NULL;
++		} else {
++			bgmac_err(bgmac, "Hardware reported transmission for empty TX ring slot %d! End of ring: %d", ring->start, ring->end);
++		}
++
++		if (++ring->start >= BGMAC_TX_RING_SLOTS)
++			ring->start = 0;
++	}
++}
++
++static void bgmac_dma_rx_reset(struct bgmac *bgmac, struct bgmac_dma_ring *ring)
++{
++	if (!ring->mmio_base)
++		return;
++
++	bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_CTL, 0);
++	if (!bgmac_wait_value(bgmac->core,
++			      ring->mmio_base + BGMAC_DMA_RX_STATUS,
++			      BGMAC_DMA_RX_STAT, BGMAC_DMA_RX_STAT_DISABLED,
++			      10000))
++		bgmac_err(bgmac, "Reset of ring 0x%X RX failed\n", ring->mmio_base);
++}
++
++static void bgmac_dma_rx_enable(struct bgmac *bgmac,
++				struct bgmac_dma_ring *ring)
++{
++	u32 ctl;
++
++	ctl = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_RX_CTL);
++	ctl &= BGMAC_DMA_RX_ADDREXT_MASK;
++	ctl |= BGMAC_DMA_RX_ENABLE;
++	ctl |= BGMAC_DMA_RX_PARITY_DISABLE;
++	ctl |= BGMAC_DMA_RX_OVERFLOW_CONT;
++	ctl |= BGMAC_RX_FRAME_OFFSET << BGMAC_DMA_RX_FRAME_OFFSET_SHIFT;
++	bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_CTL, ctl);
++}
++
++static void bgmac_dma_rx_skb_for_slot(struct bgmac *bgmac,
++				      struct bgmac_slot_info *slot)
++{
++	struct device *dma_dev = bgmac->core->dma_dev;
++	struct bgmac_rx_header *rx;
++
++	/* Alloc skb */
++	slot->skb = netdev_alloc_skb(bgmac->net_dev, BGMAC_RX_BUF_SIZE);
++	if (!slot->skb)
++		bgmac_err(bgmac, "Allocation of skb failed!\n");
++
++	/* Poison - if everything goes fine, hardware will overwrite it */
++	rx = (struct bgmac_rx_header *)slot->skb->data;
++	rx->len = cpu_to_le16(0xdead);
++	rx->flags = cpu_to_le16(0xbeef);
++
++	/* Map skb for the DMA */
++	slot->dma_addr = dma_map_single(dma_dev, slot->skb->data,
++					BGMAC_RX_BUF_SIZE, DMA_FROM_DEVICE);
++	if (dma_mapping_error(dma_dev, slot->dma_addr))
++		bgmac_err(bgmac, "DMA mapping error\n");
++	if (slot->dma_addr & 0xC0000000)
++		bgmac_warn(bgmac, "DMA address using 0xC0000000 bit(s), it may need translation trick\n");
++}
++
++static void bgmac_dma_rx_read(struct bgmac *bgmac, struct bgmac_dma_ring *ring)
++{
++	struct device *dma_dev = bgmac->core->dma_dev;
++	struct bgmac_dma_desc *dma_desc;
++	struct bgmac_slot_info *slot;
++	struct sk_buff *skb;
++	struct bgmac_rx_header *rx;
++	u32 end_slot;
++	u16 len, flags;
++
++	end_slot = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_RX_STATUS);
++	end_slot &= BGMAC_DMA_RX_STATDPTR;
++	end_slot /= sizeof(struct bgmac_dma_desc);
++
++	ring->end = end_slot;
++
++	while (ring->start != ring->end) {
++		/* Set pointers */
++		dma_desc = ring->cpu_base;
++		dma_desc += ring->start;
++		slot = &ring->slots[ring->start];
++		skb = slot->skb;
++
++		/* Unmap buffer to make it accessible to the CPU */
++		dma_unmap_single(dma_dev, slot->dma_addr, BGMAC_RX_BUF_SIZE,
++				 DMA_FROM_DEVICE);
++
++		/* Get info from the header */
++		rx = (struct bgmac_rx_header *)skb->data;
++		len = le16_to_cpu(rx->len);
++		flags = le16_to_cpu(rx->flags);
++
++		/* Check for poison and drop or pass packet */
++		if (len == 0xdead && flags == 0xbeef) {
++			bgmac_err(bgmac, "Found poisoned packet at slot %d, DMA issue!\n", ring->start);
++			dev_kfree_skb_any(skb);
++		} else {
++			/* Remove header from the skb and pass it to the net */
++			skb_put(skb, BGMAC_RX_FRAME_OFFSET + len);
++			skb_pull(skb, BGMAC_RX_FRAME_OFFSET);
++			skb->protocol = eth_type_trans(skb, bgmac->net_dev);
++			netif_receive_skb(skb);
++		}
++
++		/* Alloc new skb */
++		bgmac_dma_rx_skb_for_slot(bgmac, slot);
++		dma_desc->addr_low = cpu_to_le32(lower_32_bits(slot->dma_addr));
++		dma_desc->addr_high = cpu_to_le32(upper_32_bits(slot->dma_addr));
++
++		if (++ring->start >= BGMAC_RX_RING_SLOTS)
++			ring->start = 0;
++	}
++}
++
++/* Does ring support unaligned addressing? */
++static bool bgmac_dma_unaligned(struct bgmac *bgmac,
++				struct bgmac_dma_ring *ring)
++{
++	if (ring->tx) {
++		bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_RINGLO,
++			    0xff0);
++		if (bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_RINGLO))
++			return true;
++	} else {
++		bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_RINGLO,
++			    0xff0);
++		if (bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_RX_RINGLO))
++			return true;
++	}
++	return false;
++}
++
++static int bgmac_dma_alloc(struct bgmac *bgmac)
++{
++	struct device *dma_dev = bgmac->core->dma_dev;
++	struct bgmac_dma_ring *ring;
++	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 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->tx = true;
++		ring->num_slots = BGMAC_TX_RING_SLOTS;
++		ring->mmio_base = ring_base[i];
++		if (bgmac_dma_unaligned(bgmac, ring))
++			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 failed\n");
++		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->tx = false;
++		ring->num_slots = BGMAC_RX_RING_SLOTS;
++		ring->mmio_base = ring_base[i];
++		if (bgmac_dma_unaligned(bgmac, ring))
++			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 failed\n");
++		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++)
++			bgmac_dma_rx_skb_for_slot(bgmac, &ring->slots[i]);
++	}
++
++	return 0;
++}
++
++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);
++}
++
++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? */
++}
++
++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 ssb_sprom *sprom = &bgmac->core->bus->sprom;
++	struct bgmac_dma_ring *ring;
++	u32 tmp;
++	u8 *mac;
++	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_warn(bgmac, "Software filtering is not supported yet\n");
++
++	mac = bgmac->core->core_unit ? sprom->et1mac : sprom->et0mac;
++	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);
++	memcpy(bgmac->net_dev->dev_addr, mac, 6);
++
++	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;
++
++	return IRQ_WAKE_THREAD;
++}
++
++static irqreturn_t bgmac_interrupt_thread(int irq, void *dev_id)
++{
++	struct bgmac *bgmac = netdev_priv(dev_id);
++	struct bgmac_dma_ring *ring;
++
++	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];
++		bgmac_dma_rx_read(bgmac, ring);
++		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;
++	}
++
++	bgmac_chip_intrs_on(bgmac);
++	return IRQ_HANDLED;
++}
++
++/**************************************************
++ * net_device ops
++ **************************************************/
++
++static int bgmac_open(struct net_device *net_dev)
++{
++	struct bgmac *bgmac = netdev_priv(net_dev);
++
++	bgmac_chip_reset(bgmac);
++	/* Specs say about reclaiming rings here, but we do that in DMA init */
++	bgmac_chip_init(bgmac, true);
++
++	if (request_threaded_irq(bgmac->core->irq, bgmac_interrupt,
++				 bgmac_interrupt_thread, IRQF_SHARED,
++				 KBUILD_MODNAME, net_dev) < 0)
++		bgmac_err(bgmac, "IRQ request error!\n");
++
++	return 0;
++}
++
++static int bgmac_stop(struct net_device *net_dev)
++{
++	struct bgmac *bgmac = netdev_priv(net_dev);
++
++	bgmac_chip_intrs_off(bgmac);
++
++	free_irq(bgmac->core->irq, net_dev);
++
++	/* TODO */
++
++	return 0;
++}
++
++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, bgmac->phyaddr,
++					       data->reg_num & 0x1f);
++		return 0;
++	case SIOCSMIIREG:
++		if (!netif_running(net_dev))
++			return -EAGAIN;
++		bgmac_phy_write(bgmac, bgmac->phyaddr, data->reg_num & 0x1f,
++				data->val_in);
++		return 0;
++	default:
++		return -EOPNOTSUPP;
++	}
++}
++
++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 const struct net_device_ops bgmac_netdev_ops = {
++	.ndo_open		= bgmac_open,
++	.ndo_stop		= bgmac_stop,
++	.ndo_do_ioctl           = bgmac_ioctl,
++	.ndo_start_xmit		= bgmac_start_xmit,
++};
++
++/**************************************************
++ * 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;
++	int err;
++
++	/* 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;
++	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;
++
++	/* 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");
++		return -ENODEV;
++	}
++	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");
++		return -ENODEV;
++	}
++	bgmac_info(bgmac, "Found PHY addr: %d\n", bgmac->phyaddr);
++
++	if (core->bus->hosttype == BCMA_HOSTTYPE_PCI) {
++		bgmac_err(bgmac, "PCI setup not implemented\n");
++		return -ENOTSUPP;
++	}
++
++	bgmac_chip_reset(bgmac);
++
++	bgmac_dma_alloc(bgmac);
++
++	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 */
++	bgmac_phy_reset(bgmac);
++
++	bgmac->has_robosw = !!(core->bus->sprom.boardflags_lo &
++			       BGMAC_BFL_ENETROBO);
++	if (bgmac->has_robosw)
++		bgmac_err(bgmac, "Support for Roboswitch not implemented\n");
++
++	if (core->bus->sprom.boardflags_lo & BGMAC_BFL_ENETADM)
++		bgmac_err(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");
++		return -ENOTSUPP;
++	}
++
++	return 0;
++}
++
++static void bgmac_remove(struct bcma_device *core)
++{
++	struct bgmac *bgmac = bcma_get_drvdata(core);
++
++	unregister_netdev(bgmac->net_dev);
++	free_netdev(bgmac->net_dev);
++	bcma_set_drvdata(core, NULL);
++}
++
++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 GMAC 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)
+--- /dev/null
++++ b/drivers/net/ethernet/broadcom/bgmac.h
+@@ -0,0 +1,424 @@
++#ifndef _BGMAC_H
++#define _BGMAC_H
++
++#include <linux/bcma/bcma.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 fifi 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
++
++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;
++
++struct bgmac_dma_ring {
++	bool tx;
++	u16 num_slots;
++	u16 start;
++	u16 end;
++
++	u16 mmio_base;
++	void *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;
++
++	u8 phyaddr;
++	bool has_robosw;
++
++	u32 int_mask;
++	u32 int_status;
++
++	bool loopback;
++
++	bool autoneg;
++	bool full_duplex;
++	int speed;
++
++	/* 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];
++};
++
++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 */
+--- a/include/linux/bcma/bcma_driver_chipcommon.h
++++ b/include/linux/bcma/bcma_driver_chipcommon.h
+@@ -627,4 +627,6 @@ int bcma_nflash_erase(struct bcma_drv_cc
+ int bcma_nflash_commit(struct bcma_drv_cc *cc, u32 offset, u32 len, const u8 *buf);
+ #endif
+ 
++extern u32 bcma_pmu_get_bus_clock(struct bcma_drv_cc *cc);
++
+ #endif /* LINUX_BCMA_DRIVER_CC_H_ */
diff --git a/target/linux/generic/config-3.6 b/target/linux/generic/config-3.6
index 4e3eb6a49b..c440622922 100644
--- a/target/linux/generic/config-3.6
+++ b/target/linux/generic/config-3.6
@@ -205,6 +205,7 @@ CONFIG_BCMA_POSSIBLE=y
 # CONFIG_BE2NET is not set
 # CONFIG_BEFS_FS is not set
 # CONFIG_BFS_FS is not set
+# CONFIG_BGMAC is not set
 # CONFIG_BINARY_PRINTF is not set
 # CONFIG_BINFMT_AOUT is not set
 CONFIG_BINFMT_ELF=y
diff --git a/target/linux/generic/config-3.7 b/target/linux/generic/config-3.7
index 7c5d2b42ff..8e7a45027c 100644
--- a/target/linux/generic/config-3.7
+++ b/target/linux/generic/config-3.7
@@ -209,6 +209,7 @@ CONFIG_BCMA_POSSIBLE=y
 # CONFIG_BE2NET is not set
 # CONFIG_BEFS_FS is not set
 # CONFIG_BFS_FS is not set
+# CONFIG_BGMAC is not set
 # CONFIG_BINARY_PRINTF is not set
 # CONFIG_BINFMT_AOUT is not set
 CONFIG_BINFMT_ELF=y