bcm53xx: update the ethernet core hacks

The PHY always says there is no link
Instead of doing this dma sync a mdelay does the same trick and it is as unreliable.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39202 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/bcm53xx/patches-3.10/202-bgmac-make-bgmac-work-on-systems-without-nvram.patch

-bgmac: make bgmac work on systems without nvram
+These are some hackish patches to make the Ethernet driver work somehow
+on this arm core.
+The flash driver is not working, so we removed the nvram reading, this 
+should be changed after we have a flash driver.
+The mdelay(1) is a ugly workaround for this arm chip, this seams to be a dma problem.
 
-Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
----
- drivers/net/ethernet/broadcom/bgmac.c |    4 ++++
- 1 file changed, 4 insertions(+)
+The PHY says it is not connected by default, just ignore it.
 
 --- a/drivers/net/ethernet/broadcom/Kconfig
 +++ b/drivers/net/ethernet/broadcom/Kconfig
@@ -30,7 +31,18 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  
  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),
-@@ -1445,7 +1449,7 @@ static int bgmac_probe(struct bcma_devic
+@@ -165,6 +169,10 @@ static netdev_tx_t bgmac_dma_tx_add(stru
+ 
+ 	netdev_sent_queue(net_dev, skb->len);
+ 
++	if (bgmac->core->bus->chipinfo.id == BCMA_CHIP_ID_BCM4707 ||
++	    bgmac->core->bus->chipinfo.id == BCMA_CHIP_ID_BCM53018)
++		mdelay(1);
++
+ 	wmb();
+ 
+ 	/* Increase ring->end to point empty slot. We tell hardware the first
+@@ -1438,7 +1446,7 @@ static int bgmac_probe(struct bcma_devic
  	int err;
  
  	/* We don't support 2nd, 3rd, ... units, SPROM has to be adjusted */
@@ -39,7 +51,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  		pr_err("Unsupported core_unit %d\n", core->core_unit);
  		return -ENOTSUPP;
  	}
-@@ -1541,8 +1545,7 @@ static int bgmac_probe(struct bcma_devic
+@@ -1534,8 +1542,7 @@ static int bgmac_probe(struct bcma_devic
  	/* TODO: reset the external phy. Specs are needed */
  	bgmac_phy_reset(bgmac);
  
@@ -49,3 +61,14 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  	if (bgmac->has_robosw)
  		bgmac_warn(bgmac, "Support for Roboswitch not implemented\n");
  
+--- a/drivers/net/phy/phy_device.c
++++ b/drivers/net/phy/phy_device.c
+@@ -814,7 +814,7 @@ int genphy_update_link(struct phy_device
+ 		return status;
+ 
+ 	if ((status & BMSR_LSTATUS) == 0)
+-		phydev->link = 0;
++		phydev->link = 1;
+ 	else
+ 		phydev->link = 1;
+ 

target/linux/generic/patches-3.10/776-bgmac-add-dma-sync.patch

-From 88d0993dbe84a9b88212a4845fca28bf4c919ffb Mon Sep 17 00:00:00 2001
-From: Hauke Mehrtens <hauke@hauke-m.de>
-Date: Tue, 26 Nov 2013 23:59:32 +0100
-Subject: [PATCH 14/16] bgmac: stuff
-
----
- drivers/net/ethernet/broadcom/bgmac.c |    7 +++++++
- 1 file changed, 7 insertions(+)
-
---- a/drivers/net/ethernet/broadcom/bgmac.c
-+++ b/drivers/net/ethernet/broadcom/bgmac.c
-@@ -123,6 +123,7 @@ static netdev_tx_t bgmac_dma_tx_add(stru
- 	struct net_device *net_dev = bgmac->net_dev;
- 	struct bgmac_dma_desc *dma_desc;
- 	struct bgmac_slot_info *slot;
-+	int size = ring->num_slots * sizeof(struct bgmac_dma_desc);
- 	u32 ctl0, ctl1;
- 	int free_slots;
- 
-@@ -163,6 +164,8 @@ static netdev_tx_t bgmac_dma_tx_add(stru
- 	dma_desc->ctl0 = cpu_to_le32(ctl0);
- 	dma_desc->ctl1 = cpu_to_le32(ctl1);
- 
-+	dma_sync_single_for_device(dma_dev, ring->dma_base, size, DMA_TO_DEVICE);
-+
- 	netdev_sent_queue(net_dev, skb->len);
- 
- 	wmb();
-@@ -313,6 +316,8 @@ static void bgmac_dma_rx_setup_desc(stru
- 				    struct bgmac_dma_ring *ring, int desc_idx)
- {
- 	struct bgmac_dma_desc *dma_desc = ring->cpu_base + desc_idx;
-+	struct device *dma_dev = bgmac->core->dma_dev;
-+	int size = ring->num_slots * sizeof(struct bgmac_dma_desc);
- 	u32 ctl0 = 0, ctl1 = 0;
- 
- 	if (desc_idx == ring->num_slots - 1)
-@@ -327,6 +332,8 @@ static void bgmac_dma_rx_setup_desc(stru
- 	dma_desc->addr_high = cpu_to_le32(upper_32_bits(ring->slots[desc_idx].dma_addr));
- 	dma_desc->ctl0 = cpu_to_le32(ctl0);
- 	dma_desc->ctl1 = cpu_to_le32(ctl1);
-+
-+	dma_sync_single_for_device(dma_dev, ring->dma_base, size, DMA_TO_DEVICE);
- }
- 
- static int bgmac_dma_rx_read(struct bgmac *bgmac, struct bgmac_dma_ring *ring,