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authorDavid S. Miller <davem@davemloft.net>2017-03-03 09:44:28 -0800
committerDavid S. Miller <davem@davemloft.net>2017-03-03 09:44:28 -0800
commite28599800a1274357492d85a653012ed3220b45c (patch)
treee8563495264c20d363e421cdcd9aa3291b0d5bf8
parent2ddbcea75a36dac2ff62ee33a0a8df37e994201e (diff)
parentfa42245dff4a5f2f8f208da542acbd80c22f7c65 (diff)
Merge branch 'bgmac-fixes'
Jon Mason says: ==================== net: ethernet: bgmac: bug fixes Changes in v5: * Rebased to the latest code and fixed up a compile error due to the mac_addr struct going away (found by David Miller) Changes in v4: * Added the udelays from the previous code (per David Miller) Changes in v3: * Reworked the init sequence patch to only remove the device reset if the device is actually in reset. Given that this code doesn't bear much resemblance to the original code, I'm changing the author of the patch. This was tested on NS2 SVK. Changes in v2: * Reworked the first match to make it more obvious what portions of the register were being preserved (Per Rafal Mileki) * Style change to reorder the function variables in patch 2 (per Sergei Shtylyov) Bug fixes for bgmac driver ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/ethernet/broadcom/bgmac-platform.c27
-rw-r--r--drivers/net/ethernet/broadcom/bgmac.c6
-rw-r--r--drivers/net/ethernet/broadcom/bgmac.h16
3 files changed, 39 insertions, 10 deletions
diff --git a/drivers/net/ethernet/broadcom/bgmac-platform.c b/drivers/net/ethernet/broadcom/bgmac-platform.c
index 7b1af95..da1b8b2 100644
--- a/drivers/net/ethernet/broadcom/bgmac-platform.c
+++ b/drivers/net/ethernet/broadcom/bgmac-platform.c
@@ -51,8 +51,7 @@ static void platform_bgmac_idm_write(struct bgmac *bgmac, u16 offset, u32 value)
static bool platform_bgmac_clk_enabled(struct bgmac *bgmac)
{
- if ((bgmac_idm_read(bgmac, BCMA_IOCTL) &
- (BCMA_IOCTL_CLK | BCMA_IOCTL_FGC)) != BCMA_IOCTL_CLK)
+ if ((bgmac_idm_read(bgmac, BCMA_IOCTL) & BGMAC_CLK_EN) != BGMAC_CLK_EN)
return false;
if (bgmac_idm_read(bgmac, BCMA_RESET_CTL) & BCMA_RESET_CTL_RESET)
return false;
@@ -61,15 +60,25 @@ static bool platform_bgmac_clk_enabled(struct bgmac *bgmac)
static void platform_bgmac_clk_enable(struct bgmac *bgmac, u32 flags)
{
- bgmac_idm_write(bgmac, BCMA_IOCTL,
- (BCMA_IOCTL_CLK | BCMA_IOCTL_FGC | flags));
- bgmac_idm_read(bgmac, BCMA_IOCTL);
+ u32 val;
- bgmac_idm_write(bgmac, BCMA_RESET_CTL, 0);
- bgmac_idm_read(bgmac, BCMA_RESET_CTL);
- udelay(1);
+ /* The Reset Control register only contains a single bit to show if the
+ * controller is currently in reset. Do a sanity check here, just in
+ * case the bootloader happened to leave the device in reset.
+ */
+ val = bgmac_idm_read(bgmac, BCMA_RESET_CTL);
+ if (val) {
+ bgmac_idm_write(bgmac, BCMA_RESET_CTL, 0);
+ bgmac_idm_read(bgmac, BCMA_RESET_CTL);
+ udelay(1);
+ }
- bgmac_idm_write(bgmac, BCMA_IOCTL, (BCMA_IOCTL_CLK | flags));
+ val = bgmac_idm_read(bgmac, BCMA_IOCTL);
+ /* Some bits of BCMA_IOCTL set by HW/ATF and should not change */
+ val |= flags & ~(BGMAC_AWCACHE | BGMAC_ARCACHE | BGMAC_AWUSER |
+ BGMAC_ARUSER);
+ val |= BGMAC_CLK_EN;
+ bgmac_idm_write(bgmac, BCMA_IOCTL, val);
bgmac_idm_read(bgmac, BCMA_IOCTL);
udelay(1);
}
diff --git a/drivers/net/ethernet/broadcom/bgmac.c b/drivers/net/ethernet/broadcom/bgmac.c
index 4150467..fd66fca 100644
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -1223,12 +1223,16 @@ static netdev_tx_t bgmac_start_xmit(struct sk_buff *skb,
static int bgmac_set_mac_address(struct net_device *net_dev, void *addr)
{
struct bgmac *bgmac = netdev_priv(net_dev);
+ struct sockaddr *sa = addr;
int ret;
ret = eth_prepare_mac_addr_change(net_dev, addr);
if (ret < 0)
return ret;
- bgmac_write_mac_address(bgmac, (u8 *)addr);
+
+ ether_addr_copy(net_dev->dev_addr, sa->sa_data);
+ bgmac_write_mac_address(bgmac, net_dev->dev_addr);
+
eth_commit_mac_addr_change(net_dev, addr);
return 0;
}
diff --git a/drivers/net/ethernet/broadcom/bgmac.h b/drivers/net/ethernet/broadcom/bgmac.h
index 248727d..6d1c6ff 100644
--- a/drivers/net/ethernet/broadcom/bgmac.h
+++ b/drivers/net/ethernet/broadcom/bgmac.h
@@ -213,6 +213,22 @@
/* 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 */
+/* The IOCTL values appear to be different in NS, NSP, and NS2, and do not match
+ * the values directly above
+ */
+#define BGMAC_CLK_EN BIT(0)
+#define BGMAC_RESERVED_0 BIT(1)
+#define BGMAC_SOURCE_SYNC_MODE_EN BIT(2)
+#define BGMAC_DEST_SYNC_MODE_EN BIT(3)
+#define BGMAC_TX_CLK_OUT_INVERT_EN BIT(4)
+#define BGMAC_DIRECT_GMII_MODE BIT(5)
+#define BGMAC_CLK_250_SEL BIT(6)
+#define BGMAC_AWCACHE (0xf << 7)
+#define BGMAC_RESERVED_1 (0x1f << 11)
+#define BGMAC_ARCACHE (0xf << 16)
+#define BGMAC_AWUSER (0x3f << 20)
+#define BGMAC_ARUSER (0x3f << 26)
+#define BGMAC_RESERVED BIT(31)
/* BCMA GMAC core specific IO status (BCMA_IOST) flags */
#define BGMAC_BCMA_IOST_ATTACHED 0x00000800