bgmac: add bgmac_umac_*() helpers for accessing UniMAC registers

UniMAC is a hardware block commonly used in Broadcom Ethernet controllers
that should get its own header file. Not every controller has it mapped at
the 0x800 offset so add bgmac access helpers. They will allow using
shared register defines.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20210107180051.1542-1-zajec5@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

2 files changed, 55 insertions, 40 deletions

diff --git a/drivers/net/ethernet/broadcom/bgmac.c b/drivers/net/ethernet/broadcom/bgmac.c
index 98ec1b8a7d8e..b8b2538303ed 100644
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -746,10 +746,10 @@ error:
 /* 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)
+static void bgmac_umac_cmd_maskset(struct bgmac *bgmac, u32 mask, u32 set,
+				   bool force)
 {
-	u32 cmdcfg = bgmac_read(bgmac, BGMAC_CMDCFG);
+	u32 cmdcfg = bgmac_umac_read(bgmac, BGMAC_CMDCFG);
 	u32 new_val = (cmdcfg & mask) | set;
 	u32 cmdcfg_sr;
 
@@ -758,13 +758,13 @@ static void bgmac_cmdcfg_maskset(struct bgmac *bgmac, u32 mask, u32 set,
 	else
 		cmdcfg_sr = BGMAC_CMDCFG_SR_REV0;
 
-	bgmac_set(bgmac, BGMAC_CMDCFG, cmdcfg_sr);
+	bgmac_umac_maskset(bgmac, BGMAC_CMDCFG, ~0, cmdcfg_sr);
 	udelay(2);
 
 	if (new_val != cmdcfg || force)
-		bgmac_write(bgmac, BGMAC_CMDCFG, new_val);
+		bgmac_umac_write(bgmac, BGMAC_CMDCFG, new_val);
 
-	bgmac_mask(bgmac, BGMAC_CMDCFG, ~cmdcfg_sr);
+	bgmac_umac_maskset(bgmac, BGMAC_CMDCFG, ~cmdcfg_sr, 0);
 	udelay(2);
 }
 
@@ -773,9 +773,9 @@ static void bgmac_write_mac_address(struct bgmac *bgmac, u8 *addr)
 	u32 tmp;
 
 	tmp = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3];
-	bgmac_write(bgmac, BGMAC_MACADDR_HIGH, tmp);
+	bgmac_umac_write(bgmac, BGMAC_MACADDR_HIGH, tmp);
 	tmp = (addr[4] << 8) | addr[5];
-	bgmac_write(bgmac, BGMAC_MACADDR_LOW, tmp);
+	bgmac_umac_write(bgmac, BGMAC_MACADDR_LOW, tmp);
 }
 
 static void bgmac_set_rx_mode(struct net_device *net_dev)
@@ -783,9 +783,9 @@ static void bgmac_set_rx_mode(struct net_device *net_dev)
 	struct bgmac *bgmac = netdev_priv(net_dev);
 
 	if (net_dev->flags & IFF_PROMISC)
-		bgmac_cmdcfg_maskset(bgmac, ~0, BGMAC_CMDCFG_PROM, true);
+		bgmac_umac_cmd_maskset(bgmac, ~0, BGMAC_CMDCFG_PROM, true);
 	else
-		bgmac_cmdcfg_maskset(bgmac, ~BGMAC_CMDCFG_PROM, 0, true);
+		bgmac_umac_cmd_maskset(bgmac, ~BGMAC_CMDCFG_PROM, 0, true);
 }
 
 #if 0 /* We don't use that regs yet */
@@ -849,7 +849,7 @@ static void bgmac_mac_speed(struct bgmac *bgmac)
 	if (bgmac->mac_duplex == DUPLEX_HALF)
 		set |= BGMAC_CMDCFG_HD;
 
-	bgmac_cmdcfg_maskset(bgmac, mask, set, true);
+	bgmac_umac_cmd_maskset(bgmac, mask, set, true);
 }
 
 static void bgmac_miiconfig(struct bgmac *bgmac)
@@ -917,7 +917,7 @@ static void bgmac_chip_reset(struct bgmac *bgmac)
 		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);
+		bgmac_umac_cmd_maskset(bgmac, ~0, BGMAC_CMDCFG_ML, false);
 		udelay(1);
 
 		for (i = 0; i < BGMAC_MAX_RX_RINGS; i++)
@@ -995,25 +995,25 @@ static void bgmac_chip_reset(struct bgmac *bgmac)
 	else
 		cmdcfg_sr = BGMAC_CMDCFG_SR_REV0;
 
-	bgmac_cmdcfg_maskset(bgmac,
-			     ~(BGMAC_CMDCFG_TE |
-			       BGMAC_CMDCFG_RE |
-			       BGMAC_CMDCFG_RPI |
-			       BGMAC_CMDCFG_TAI |
-			       BGMAC_CMDCFG_HD |
-			       BGMAC_CMDCFG_ML |
+	bgmac_umac_cmd_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_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 |
-			     cmdcfg_sr,
-			     false);
+			       cmdcfg_sr,
+			       false);
 	bgmac->mac_speed = SPEED_UNKNOWN;
 	bgmac->mac_duplex = DUPLEX_UNKNOWN;
 
@@ -1053,12 +1053,12 @@ static void bgmac_enable(struct bgmac *bgmac)
 	else
 		cmdcfg_sr = BGMAC_CMDCFG_SR_REV0;
 
-	cmdcfg = bgmac_read(bgmac, BGMAC_CMDCFG);
-	bgmac_cmdcfg_maskset(bgmac, ~(BGMAC_CMDCFG_TE | BGMAC_CMDCFG_RE),
-			     cmdcfg_sr, true);
+	cmdcfg = bgmac_umac_read(bgmac, BGMAC_CMDCFG);
+	bgmac_umac_cmd_maskset(bgmac, ~(BGMAC_CMDCFG_TE | BGMAC_CMDCFG_RE),
+			       cmdcfg_sr, true);
 	udelay(2);
 	cmdcfg |= BGMAC_CMDCFG_TE | BGMAC_CMDCFG_RE;
-	bgmac_write(bgmac, BGMAC_CMDCFG, cmdcfg);
+	bgmac_umac_write(bgmac, BGMAC_CMDCFG, cmdcfg);
 
 	mode = (bgmac_read(bgmac, BGMAC_DEV_STATUS) & BGMAC_DS_MM_MASK) >>
 		BGMAC_DS_MM_SHIFT;
@@ -1078,7 +1078,7 @@ static void bgmac_enable(struct bgmac *bgmac)
 			fl_ctl = 0x03cb04cb;
 
 		bgmac_write(bgmac, BGMAC_FLOW_CTL_THRESH, fl_ctl);
-		bgmac_write(bgmac, BGMAC_PAUSE_CTL, 0x27fff);
+		bgmac_umac_write(bgmac, BGMAC_PAUSE_CTL, 0x27fff);
 	}
 
 	if (bgmac->feature_flags & BGMAC_FEAT_SET_RXQ_CLK) {
@@ -1105,18 +1105,18 @@ static void bgmac_chip_init(struct bgmac *bgmac)
 	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);
+	bgmac_umac_cmd_maskset(bgmac, ~BGMAC_CMDCFG_RPI, 0, true);
 
 	bgmac_set_rx_mode(bgmac->net_dev);
 
 	bgmac_write_mac_address(bgmac, bgmac->net_dev->dev_addr);
 
 	if (bgmac->loopback)
-		bgmac_cmdcfg_maskset(bgmac, ~0, BGMAC_CMDCFG_ML, false);
+		bgmac_umac_cmd_maskset(bgmac, ~0, BGMAC_CMDCFG_ML, false);
 	else
-		bgmac_cmdcfg_maskset(bgmac, ~BGMAC_CMDCFG_ML, 0, false);
+		bgmac_umac_cmd_maskset(bgmac, ~BGMAC_CMDCFG_ML, 0, false);
 
-	bgmac_write(bgmac, BGMAC_RXMAX_LENGTH, 32 + ETHER_MAX_LEN);
+	bgmac_umac_write(bgmac, BGMAC_RXMAX_LENGTH, 32 + ETHER_MAX_LEN);
 
 	bgmac_chip_intrs_on(bgmac);
 
@@ -1252,7 +1252,7 @@ static int bgmac_change_mtu(struct net_device *net_dev, int mtu)
 {
 	struct bgmac *bgmac = netdev_priv(net_dev);
 
-	bgmac_write(bgmac, BGMAC_RXMAX_LENGTH, 32 + mtu);
+	bgmac_umac_write(bgmac, BGMAC_RXMAX_LENGTH, 32 + mtu);
 	return 0;
 }
 
diff --git a/drivers/net/ethernet/broadcom/bgmac.h b/drivers/net/ethernet/broadcom/bgmac.h
index 351c598a3ec6..c069107d0d95 100644
--- a/drivers/net/ethernet/broadcom/bgmac.h
+++ b/drivers/net/ethernet/broadcom/bgmac.h
@@ -556,6 +556,16 @@ static inline void bgmac_write(struct bgmac *bgmac, u16 offset, u32 value)
 	bgmac->write(bgmac, offset, value);
 }
 
+static inline u32 bgmac_umac_read(struct bgmac *bgmac, u16 offset)
+{
+	return bgmac_read(bgmac, offset);
+}
+
+static inline void bgmac_umac_write(struct bgmac *bgmac, u16 offset, u32 value)
+{
+	bgmac_write(bgmac, offset, value);
+}
+
 static inline u32 bgmac_idm_read(struct bgmac *bgmac, u16 offset)
 {
 	return bgmac->idm_read(bgmac, offset);
@@ -609,6 +619,11 @@ static inline void bgmac_set(struct bgmac *bgmac, u16 offset, u32 set)
 	bgmac_maskset(bgmac, offset, ~0, set);
 }
 
+static inline void bgmac_umac_maskset(struct bgmac *bgmac, u16 offset, u32 mask, u32 set)
+{
+	bgmac_maskset(bgmac, offset, mask, set);
+}
+
 static inline int bgmac_phy_connect(struct bgmac *bgmac)
 {
 	return bgmac->phy_connect(bgmac);