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kernel: backport bgmac support for external PHYs 

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
This commit is contained in:
Rafał Miłecki 2017-01-31 22:01:05 +01:00
parent bde06ab26b
commit 6a853776a5
5 changed files with 540 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

70
target/linux/generic/patches-4.4/072-net-add-devm-version-of-alloc_etherdev_mqs-function.patch Normal file
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@ -0,0 +1,70 @@
From 40be0dda0725886b623d67868db3219a2e74683b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Sat, 28 Jan 2017 15:15:42 +0100
Subject: [PATCH] net: add devm version of alloc_etherdev_mqs function
This patch adds devm_alloc_etherdev_mqs function and devm_alloc_etherdev
macro. These can be used for simpler netdev allocation without having to
care about calling free_netdev.
Thanks to this change drivers, their error paths and removal paths may
get simpler by a bit.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
include/linux/etherdevice.h | 5 +++++
net/ethernet/eth.c | 28 ++++++++++++++++++++++++++++
2 files changed, 33 insertions(+)
--- a/include/linux/etherdevice.h
+++ b/include/linux/etherdevice.h
@@ -51,6 +51,11 @@ struct net_device *alloc_etherdev_mqs(in
#define alloc_etherdev(sizeof_priv) alloc_etherdev_mq(sizeof_priv, 1)
#define alloc_etherdev_mq(sizeof_priv, count) alloc_etherdev_mqs(sizeof_priv, count, count)
+struct net_device *devm_alloc_etherdev_mqs(struct device *dev, int sizeof_priv,
+ unsigned int txqs,
+ unsigned int rxqs);
+#define devm_alloc_etherdev(dev, sizeof_priv) devm_alloc_etherdev_mqs(dev, sizeof_priv, 1, 1)
+
struct sk_buff **eth_gro_receive(struct sk_buff **head,
struct sk_buff *skb);
int eth_gro_complete(struct sk_buff *skb, int nhoff);
--- a/net/ethernet/eth.c
+++ b/net/ethernet/eth.c
@@ -387,6 +387,34 @@ struct net_device *alloc_etherdev_mqs(in
}
EXPORT_SYMBOL(alloc_etherdev_mqs);
+static void devm_free_netdev(struct device *dev, void *res)
+{
+ free_netdev(*(struct net_device **)res);
+}
+
+struct net_device *devm_alloc_etherdev_mqs(struct device *dev, int sizeof_priv,
+ unsigned int txqs, unsigned int rxqs)
+{
+ struct net_device **dr;
+ struct net_device *netdev;
+
+ dr = devres_alloc(devm_free_netdev, sizeof(*dr), GFP_KERNEL);
+ if (!dr)
+ return NULL;
+
+ netdev = alloc_etherdev_mqs(sizeof_priv, txqs, rxqs);
+ if (!netdev) {
+ devres_free(dr);
+ return NULL;
+ }
+
+ *dr = netdev;
+ devres_add(dev, dr);
+
+ return netdev;
+}
+EXPORT_SYMBOL(devm_alloc_etherdev_mqs);
+
ssize_t sysfs_format_mac(char *buf, const unsigned char *addr, int len)
{
return scnprintf(buf, PAGE_SIZE, "%*phC\n", len, addr);

139
target/linux/generic/patches-4.4/073-v4.10-0001-net-bgmac-allocate-struct-bgmac-just-once-don-t-copy.patch Normal file
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@ -0,0 +1,139 @@
From 34a5102c3235c470a6c77fba16cb971964d9c136 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Tue, 31 Jan 2017 19:37:54 +0100
Subject: [PATCH 1/3] net: bgmac: allocate struct bgmac just once & don't copy
it
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
So far were were allocating struct bgmac in 3 places: platform code,
bcma code and shared bgmac_enet_probe function. The reason for this was
bgmac_enet_probe:
1) Requiring early-filled struct bgmac
2) Calling alloc_etherdev on its own in order to use netdev_priv later
This solution got few drawbacks:
1) Was duplicating allocating code
2) Required copying early-filled struct
3) Resulted in platform/bcma code having access only to unused struct
Solve this situation by simply extracting some probe code into the new
bgmac_alloc function.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/broadcom/bgmac-bcma.c | 4 +---
drivers/net/ethernet/broadcom/bgmac-platform.c | 2 +-
drivers/net/ethernet/broadcom/bgmac.c | 25 +++++++++++++++++--------
drivers/net/ethernet/broadcom/bgmac.h | 3 ++-
4 files changed, 21 insertions(+), 13 deletions(-)
--- a/drivers/net/ethernet/broadcom/bgmac-bcma.c
+++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c
@@ -99,12 +99,11 @@ static int bgmac_probe(struct bcma_devic
u8 *mac;
int err;
- bgmac = kzalloc(sizeof(*bgmac), GFP_KERNEL);
+ bgmac = bgmac_alloc(&core->dev);
if (!bgmac)
return -ENOMEM;
bgmac->bcma.core = core;
- bgmac->dev = &core->dev;
bgmac->dma_dev = core->dma_dev;
bgmac->irq = core->irq;
@@ -285,7 +284,6 @@ static int bgmac_probe(struct bcma_devic
err1:
bcma_mdio_mii_unregister(bgmac->mii_bus);
err:
- kfree(bgmac);
bcma_set_drvdata(core, NULL);
return err;
--- a/drivers/net/ethernet/broadcom/bgmac-platform.c
+++ b/drivers/net/ethernet/broadcom/bgmac-platform.c
@@ -93,7 +93,7 @@ static int bgmac_probe(struct platform_d
struct resource *regs;
const u8 *mac_addr;
- bgmac = devm_kzalloc(&pdev->dev, sizeof(*bgmac), GFP_KERNEL);
+ bgmac = bgmac_alloc(&pdev->dev);
if (!bgmac)
return -ENOMEM;
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -1475,22 +1475,32 @@ static int bgmac_phy_connect(struct bgma
return 0;
}
-int bgmac_enet_probe(struct bgmac *info)
+struct bgmac *bgmac_alloc(struct device *dev)
{
struct net_device *net_dev;
struct bgmac *bgmac;
- int err;
/* Allocation and references */
- net_dev = alloc_etherdev(sizeof(*bgmac));
+ net_dev = devm_alloc_etherdev(dev, sizeof(*bgmac));
if (!net_dev)
- return -ENOMEM;
+ return NULL;
net_dev->netdev_ops = &bgmac_netdev_ops;
net_dev->ethtool_ops = &bgmac_ethtool_ops;
+
bgmac = netdev_priv(net_dev);
- memcpy(bgmac, info, sizeof(*bgmac));
+ bgmac->dev = dev;
bgmac->net_dev = net_dev;
+
+ return bgmac;
+}
+EXPORT_SYMBOL_GPL(bgmac_alloc);
+
+int bgmac_enet_probe(struct bgmac *bgmac)
+{
+ struct net_device *net_dev = bgmac->net_dev;
+ int err;
+
net_dev->irq = bgmac->irq;
SET_NETDEV_DEV(net_dev, bgmac->dev);
@@ -1517,7 +1527,7 @@ int bgmac_enet_probe(struct bgmac *info)
err = bgmac_dma_alloc(bgmac);
if (err) {
dev_err(bgmac->dev, "Unable to alloc memory for DMA\n");
- goto err_netdev_free;
+ goto err_out;
}
bgmac->int_mask = BGMAC_IS_ERRMASK | BGMAC_IS_RX | BGMAC_IS_TX_MASK;
@@ -1553,8 +1563,7 @@ err_phy_disconnect:
phy_disconnect(net_dev->phydev);
err_dma_free:
bgmac_dma_free(bgmac);
-err_netdev_free:
- free_netdev(net_dev);
+err_out:
return err;
}
--- a/drivers/net/ethernet/broadcom/bgmac.h
+++ b/drivers/net/ethernet/broadcom/bgmac.h
@@ -515,7 +515,8 @@ struct bgmac {
u32 set);
};
-int bgmac_enet_probe(struct bgmac *info);
+struct bgmac *bgmac_alloc(struct device *dev);
+int bgmac_enet_probe(struct bgmac *bgmac);
void bgmac_enet_remove(struct bgmac *bgmac);
struct mii_bus *bcma_mdio_mii_register(struct bcma_device *core, u8 phyaddr);

274
target/linux/generic/patches-4.4/073-v4.10-0002-net-bgmac-drop-struct-bcma_mdio-we-don-t-need-anymor.patch Normal file
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@ -0,0 +1,274 @@
From aa8863e5d49417094b9457a0d53e8505e95a1863 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Tue, 31 Jan 2017 19:37:55 +0100
Subject: [PATCH 2/3] net: bgmac: drop struct bcma_mdio we don't need anymore
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Adding struct bcma_mdio was a workaround for bcma code not having access
to the struct bgmac used in the core code. Now we don't duplicate this
struct we can just use it internally in bcma code.
This simplifies code & allows access to all bgmac driver details from
all places in bcma code.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/broadcom/bgmac-bcma-mdio.c | 98 ++++++++++---------------
drivers/net/ethernet/broadcom/bgmac-bcma.c | 2 +-
drivers/net/ethernet/broadcom/bgmac.h | 2 +-
3 files changed, 42 insertions(+), 60 deletions(-)
--- a/drivers/net/ethernet/broadcom/bgmac-bcma-mdio.c
+++ b/drivers/net/ethernet/broadcom/bgmac-bcma-mdio.c
@@ -12,11 +12,6 @@
#include <linux/brcmphy.h>
#include "bgmac.h"
-struct bcma_mdio {
- struct bcma_device *core;
- u8 phyaddr;
-};
-
static bool bcma_mdio_wait_value(struct bcma_device *core, u16 reg, u32 mask,
u32 value, int timeout)
{
@@ -37,7 +32,7 @@ static bool bcma_mdio_wait_value(struct
* PHY ops
**************************************************/
-static u16 bcma_mdio_phy_read(struct bcma_mdio *bcma_mdio, u8 phyaddr, u8 reg)
+static u16 bcma_mdio_phy_read(struct bgmac *bgmac, u8 phyaddr, u8 reg)
{
struct bcma_device *core;
u16 phy_access_addr;
@@ -56,12 +51,12 @@ static u16 bcma_mdio_phy_read(struct bcm
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 (bcma_mdio->core->id.id == BCMA_CORE_4706_MAC_GBIT) {
- core = bcma_mdio->core->bus->drv_gmac_cmn.core;
+ if (bgmac->bcma.core->id.id == BCMA_CORE_4706_MAC_GBIT) {
+ core = bgmac->bcma.core->bus->drv_gmac_cmn.core;
phy_access_addr = BCMA_GMAC_CMN_PHY_ACCESS;
phy_ctl_addr = BCMA_GMAC_CMN_PHY_CTL;
} else {
- core = bcma_mdio->core;
+ core = bgmac->bcma.core;
phy_access_addr = BGMAC_PHY_ACCESS;
phy_ctl_addr = BGMAC_PHY_CNTL;
}
@@ -87,7 +82,7 @@ static u16 bcma_mdio_phy_read(struct bcm
}
/* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphywr */
-static int bcma_mdio_phy_write(struct bcma_mdio *bcma_mdio, u8 phyaddr, u8 reg,
+static int bcma_mdio_phy_write(struct bgmac *bgmac, u8 phyaddr, u8 reg,
u16 value)
{
struct bcma_device *core;
@@ -95,12 +90,12 @@ static int bcma_mdio_phy_write(struct bc
u16 phy_ctl_addr;
u32 tmp;
- if (bcma_mdio->core->id.id == BCMA_CORE_4706_MAC_GBIT) {
- core = bcma_mdio->core->bus->drv_gmac_cmn.core;
+ if (bgmac->bcma.core->id.id == BCMA_CORE_4706_MAC_GBIT) {
+ core = bgmac->bcma.core->bus->drv_gmac_cmn.core;
phy_access_addr = BCMA_GMAC_CMN_PHY_ACCESS;
phy_ctl_addr = BCMA_GMAC_CMN_PHY_CTL;
} else {
- core = bcma_mdio->core;
+ core = bgmac->bcma.core;
phy_access_addr = BGMAC_PHY_ACCESS;
phy_ctl_addr = BGMAC_PHY_CNTL;
}
@@ -110,8 +105,8 @@ static int bcma_mdio_phy_write(struct bc
tmp |= phyaddr;
bcma_write32(core, phy_ctl_addr, tmp);
- bcma_write32(bcma_mdio->core, BGMAC_INT_STATUS, BGMAC_IS_MDIO);
- if (bcma_read32(bcma_mdio->core, BGMAC_INT_STATUS) & BGMAC_IS_MDIO)
+ bcma_write32(bgmac->bcma.core, BGMAC_INT_STATUS, BGMAC_IS_MDIO);
+ if (bcma_read32(bgmac->bcma.core, BGMAC_INT_STATUS) & BGMAC_IS_MDIO)
dev_warn(&core->dev, "Error setting MDIO int\n");
tmp = BGMAC_PA_START;
@@ -132,39 +127,39 @@ static int bcma_mdio_phy_write(struct bc
}
/* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphyinit */
-static void bcma_mdio_phy_init(struct bcma_mdio *bcma_mdio)
+static void bcma_mdio_phy_init(struct bgmac *bgmac)
{
- struct bcma_chipinfo *ci = &bcma_mdio->core->bus->chipinfo;
+ struct bcma_chipinfo *ci = &bgmac->bcma.core->bus->chipinfo;
u8 i;
if (ci->id == BCMA_CHIP_ID_BCM5356) {
for (i = 0; i < 5; i++) {
- bcma_mdio_phy_write(bcma_mdio, i, 0x1f, 0x008b);
- bcma_mdio_phy_write(bcma_mdio, i, 0x15, 0x0100);
- bcma_mdio_phy_write(bcma_mdio, i, 0x1f, 0x000f);
- bcma_mdio_phy_write(bcma_mdio, i, 0x12, 0x2aaa);
- bcma_mdio_phy_write(bcma_mdio, i, 0x1f, 0x000b);
+ bcma_mdio_phy_write(bgmac, i, 0x1f, 0x008b);
+ bcma_mdio_phy_write(bgmac, i, 0x15, 0x0100);
+ bcma_mdio_phy_write(bgmac, i, 0x1f, 0x000f);
+ bcma_mdio_phy_write(bgmac, i, 0x12, 0x2aaa);
+ bcma_mdio_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)) {
- struct bcma_drv_cc *cc = &bcma_mdio->core->bus->drv_cc;
+ struct bcma_drv_cc *cc = &bgmac->bcma.core->bus->drv_cc;
bcma_chipco_chipctl_maskset(cc, 2, ~0xc0000000, 0);
bcma_chipco_chipctl_maskset(cc, 4, ~0x80000000, 0);
for (i = 0; i < 5; i++) {
- bcma_mdio_phy_write(bcma_mdio, i, 0x1f, 0x000f);
- bcma_mdio_phy_write(bcma_mdio, i, 0x16, 0x5284);
- bcma_mdio_phy_write(bcma_mdio, i, 0x1f, 0x000b);
- bcma_mdio_phy_write(bcma_mdio, i, 0x17, 0x0010);
- bcma_mdio_phy_write(bcma_mdio, i, 0x1f, 0x000f);
- bcma_mdio_phy_write(bcma_mdio, i, 0x16, 0x5296);
- bcma_mdio_phy_write(bcma_mdio, i, 0x17, 0x1073);
- bcma_mdio_phy_write(bcma_mdio, i, 0x17, 0x9073);
- bcma_mdio_phy_write(bcma_mdio, i, 0x16, 0x52b6);
- bcma_mdio_phy_write(bcma_mdio, i, 0x17, 0x9273);
- bcma_mdio_phy_write(bcma_mdio, i, 0x1f, 0x000b);
+ bcma_mdio_phy_write(bgmac, i, 0x1f, 0x000f);
+ bcma_mdio_phy_write(bgmac, i, 0x16, 0x5284);
+ bcma_mdio_phy_write(bgmac, i, 0x1f, 0x000b);
+ bcma_mdio_phy_write(bgmac, i, 0x17, 0x0010);
+ bcma_mdio_phy_write(bgmac, i, 0x1f, 0x000f);
+ bcma_mdio_phy_write(bgmac, i, 0x16, 0x5296);
+ bcma_mdio_phy_write(bgmac, i, 0x17, 0x1073);
+ bcma_mdio_phy_write(bgmac, i, 0x17, 0x9073);
+ bcma_mdio_phy_write(bgmac, i, 0x16, 0x52b6);
+ bcma_mdio_phy_write(bgmac, i, 0x17, 0x9273);
+ bcma_mdio_phy_write(bgmac, i, 0x1f, 0x000b);
}
}
}
@@ -172,17 +167,17 @@ static void bcma_mdio_phy_init(struct bc
/* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphyreset */
static int bcma_mdio_phy_reset(struct mii_bus *bus)
{
- struct bcma_mdio *bcma_mdio = bus->priv;
- u8 phyaddr = bcma_mdio->phyaddr;
+ struct bgmac *bgmac = bus->priv;
+ u8 phyaddr = bgmac->phyaddr;
- if (bcma_mdio->phyaddr == BGMAC_PHY_NOREGS)
+ if (phyaddr == BGMAC_PHY_NOREGS)
return 0;
- bcma_mdio_phy_write(bcma_mdio, phyaddr, MII_BMCR, BMCR_RESET);
+ bcma_mdio_phy_write(bgmac, phyaddr, MII_BMCR, BMCR_RESET);
udelay(100);
- if (bcma_mdio_phy_read(bcma_mdio, phyaddr, MII_BMCR) & BMCR_RESET)
- dev_err(&bcma_mdio->core->dev, "PHY reset failed\n");
- bcma_mdio_phy_init(bcma_mdio);
+ if (bcma_mdio_phy_read(bgmac, phyaddr, MII_BMCR) & BMCR_RESET)
+ dev_err(bgmac->dev, "PHY reset failed\n");
+ bcma_mdio_phy_init(bgmac);
return 0;
}
@@ -202,16 +197,12 @@ static int bcma_mdio_mii_write(struct mi
return bcma_mdio_phy_write(bus->priv, mii_id, regnum, value);
}
-struct mii_bus *bcma_mdio_mii_register(struct bcma_device *core, u8 phyaddr)
+struct mii_bus *bcma_mdio_mii_register(struct bgmac *bgmac)
{
- struct bcma_mdio *bcma_mdio;
+ struct bcma_device *core = bgmac->bcma.core;
struct mii_bus *mii_bus;
int i, err;
- bcma_mdio = kzalloc(sizeof(*bcma_mdio), GFP_KERNEL);
- if (!bcma_mdio)
- return ERR_PTR(-ENOMEM);
-
mii_bus = mdiobus_alloc();
if (!mii_bus) {
err = -ENOMEM;
@@ -221,12 +212,12 @@ struct mii_bus *bcma_mdio_mii_register(s
mii_bus->name = "bcma_mdio mii bus";
sprintf(mii_bus->id, "%s-%d-%d", "bcma_mdio", core->bus->num,
core->core_unit);
- mii_bus->priv = bcma_mdio;
+ mii_bus->priv = bgmac;
mii_bus->read = bcma_mdio_mii_read;
mii_bus->write = bcma_mdio_mii_write;
mii_bus->reset = bcma_mdio_phy_reset;
mii_bus->parent = &core->dev;
- mii_bus->phy_mask = ~(1 << phyaddr);
+ mii_bus->phy_mask = ~(1 << bgmac->phyaddr);
mii_bus->irq = kmalloc_array(PHY_MAX_ADDR, sizeof(int), GFP_KERNEL);
if (!mii_bus->irq) {
@@ -236,9 +227,6 @@ struct mii_bus *bcma_mdio_mii_register(s
for (i = 0; i < PHY_MAX_ADDR; i++)
mii_bus->irq[i] = PHY_POLL;
- bcma_mdio->core = core;
- bcma_mdio->phyaddr = phyaddr;
-
err = mdiobus_register(mii_bus);
if (err) {
dev_err(&core->dev, "Registration of mii bus failed\n");
@@ -252,24 +240,18 @@ err_free_irq:
err_free_bus:
mdiobus_free(mii_bus);
err:
- kfree(bcma_mdio);
return ERR_PTR(err);
}
EXPORT_SYMBOL_GPL(bcma_mdio_mii_register);
void bcma_mdio_mii_unregister(struct mii_bus *mii_bus)
{
- struct bcma_mdio *bcma_mdio;
-
if (!mii_bus)
return;
- bcma_mdio = mii_bus->priv;
-
mdiobus_unregister(mii_bus);
kfree(mii_bus->irq);
mdiobus_free(mii_bus);
- kfree(bcma_mdio);
}
EXPORT_SYMBOL_GPL(bcma_mdio_mii_unregister);
--- a/drivers/net/ethernet/broadcom/bgmac-bcma.c
+++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c
@@ -159,7 +159,7 @@ static int bgmac_probe(struct bcma_devic
if (!bgmac_is_bcm4707_family(core) &&
!(ci->id == BCMA_CHIP_ID_BCM53573 && core->core_unit == 1)) {
- mii_bus = bcma_mdio_mii_register(core, bgmac->phyaddr);
+ mii_bus = bcma_mdio_mii_register(bgmac);
if (IS_ERR(mii_bus)) {
err = PTR_ERR(mii_bus);
goto err;
--- a/drivers/net/ethernet/broadcom/bgmac.h
+++ b/drivers/net/ethernet/broadcom/bgmac.h
@@ -519,7 +519,7 @@ struct bgmac *bgmac_alloc(struct device
int bgmac_enet_probe(struct bgmac *bgmac);
void bgmac_enet_remove(struct bgmac *bgmac);
-struct mii_bus *bcma_mdio_mii_register(struct bcma_device *core, u8 phyaddr);
+struct mii_bus *bcma_mdio_mii_register(struct bgmac *bgmac);
void bcma_mdio_mii_unregister(struct mii_bus *mii_bus);
static inline u32 bgmac_read(struct bgmac *bgmac, u16 offset)

53
target/linux/generic/patches-4.4/073-v4.10-0003-net-bgmac-use-PHY-subsystem-for-initializing-PHY.patch Normal file
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@ -0,0 +1,53 @@
From 8e6f31baba7e2c13ab7e954fe6179420a7545a8b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Tue, 31 Jan 2017 19:37:56 +0100
Subject: [PATCH 3/3] net: bgmac: use PHY subsystem for initializing PHY
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This adds support for using bgmac with PHYs supported by standalone PHY
drivers. Having any PHY initialization in bgmac is hacky and shouldn't
be extended but rather removed if anyone has hardware to test it.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/broadcom/bgmac-bcma-mdio.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/drivers/net/ethernet/broadcom/bgmac-bcma-mdio.c
+++ b/drivers/net/ethernet/broadcom/bgmac-bcma-mdio.c
@@ -132,6 +132,10 @@ static void bcma_mdio_phy_init(struct bg
struct bcma_chipinfo *ci = &bgmac->bcma.core->bus->chipinfo;
u8 i;
+ /* For some legacy hardware we do chipset-based PHY initialization here
+ * without even detecting PHY ID. It's hacky and should be cleaned as
+ * soon as someone can test it.
+ */
if (ci->id == BCMA_CHIP_ID_BCM5356) {
for (i = 0; i < 5; i++) {
bcma_mdio_phy_write(bgmac, i, 0x1f, 0x008b);
@@ -140,6 +144,7 @@ static void bcma_mdio_phy_init(struct bg
bcma_mdio_phy_write(bgmac, i, 0x12, 0x2aaa);
bcma_mdio_phy_write(bgmac, i, 0x1f, 0x000b);
}
+ return;
}
if ((ci->id == BCMA_CHIP_ID_BCM5357 && ci->pkg != 10) ||
(ci->id == BCMA_CHIP_ID_BCM4749 && ci->pkg != 10) ||
@@ -161,7 +166,12 @@ static void bcma_mdio_phy_init(struct bg
bcma_mdio_phy_write(bgmac, i, 0x17, 0x9273);
bcma_mdio_phy_write(bgmac, i, 0x1f, 0x000b);
}
+ return;
}
+
+ /* For all other hw do initialization using PHY subsystem. */
+ if (bgmac->net_dev && bgmac->net_dev->phydev)
+ phy_init_hw(bgmac->net_dev->phydev);
}
/* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphyreset */

8
target/linux/generic/patches-4.4/773-bgmac-add-srab-switch.patch
View File

@ -30,7 +30,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
/**************************************************
* MII
**************************************************/
@@ -1539,6 +1551,14 @@ int bgmac_enet_probe(struct bgmac *info)
@@ -1549,6 +1561,14 @@ int bgmac_enet_probe(struct bgmac *bgmac
net_dev->hw_features = net_dev->features;
net_dev->vlan_features = net_dev->features;
@ -45,7 +45,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
err = register_netdev(bgmac->net_dev);
if (err) {
dev_err(bgmac->dev, "Cannot register net device\n");
@@ -1562,6 +1582,10 @@ EXPORT_SYMBOL_GPL(bgmac_enet_probe);
@@ -1571,6 +1591,10 @@ EXPORT_SYMBOL_GPL(bgmac_enet_probe);
void bgmac_enet_remove(struct bgmac *bgmac)
{
@ -75,10 +75,10 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+ struct platform_device *b53_device;
};
int bgmac_enet_probe(struct bgmac *info);
struct bgmac *bgmac_alloc(struct device *dev);
--- a/drivers/net/ethernet/broadcom/bgmac-bcma.c
+++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c
@@ -231,6 +231,7 @@ static int bgmac_probe(struct bcma_devic
@@ -230,6 +230,7 @@ static int bgmac_probe(struct bcma_devic
bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST;
bgmac->feature_flags |= BGMAC_FEAT_NO_RESET;
bgmac->feature_flags |= BGMAC_FEAT_FORCE_SPEED_2500;