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net: ethernet: sun4i-emac: replace magic number with macro
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This patch remove magic numbers in sun4i-emac.c and replace with macros
defined in sun4i-emac.h

Signed-off-by: Conley Lee <conleylee@foxmail.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Link: https://lore.kernel.org/r/tencent_71466C2135CD1780B19D7844BE3F167C940A@qq.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Conley Lee authored and Jakub Kicinski committed Jan 12, 2022
1 parent 284a4d9 commit 274c224
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Showing 2 changed files with 35 additions and 13 deletions.
30 changes: 17 additions & 13 deletions drivers/net/ethernet/allwinner/sun4i-emac.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -106,9 +106,9 @@ static void emac_update_speed(struct net_device *dev)

/* set EMAC SPEED, depend on PHY */
reg_val = readl(db->membase + EMAC_MAC_SUPP_REG);
reg_val &= ~(0x1 << 8);
reg_val &= ~EMAC_MAC_SUPP_100M;
if (db->speed == SPEED_100)
reg_val |= 1 << 8;
reg_val |= EMAC_MAC_SUPP_100M;
writel(reg_val, db->membase + EMAC_MAC_SUPP_REG);
}

Expand Down Expand Up @@ -264,7 +264,7 @@ static void emac_dma_done_callback(void *arg)

/* re enable interrupt */
reg_val = readl(db->membase + EMAC_INT_CTL_REG);
reg_val |= (0x01 << 8);
reg_val |= EMAC_INT_CTL_RX_EN;
writel(reg_val, db->membase + EMAC_INT_CTL_REG);

db->emacrx_completed_flag = 1;
Expand Down Expand Up @@ -429,7 +429,7 @@ static unsigned int emac_powerup(struct net_device *ndev)
/* initial EMAC */
/* flush RX FIFO */
reg_val = readl(db->membase + EMAC_RX_CTL_REG);
reg_val |= 0x8;
reg_val |= EMAC_RX_CTL_FLUSH_FIFO;
writel(reg_val, db->membase + EMAC_RX_CTL_REG);
udelay(1);

Expand All @@ -441,8 +441,8 @@ static unsigned int emac_powerup(struct net_device *ndev)

/* set MII clock */
reg_val = readl(db->membase + EMAC_MAC_MCFG_REG);
reg_val &= (~(0xf << 2));
reg_val |= (0xD << 2);
reg_val &= ~EMAC_MAC_MCFG_MII_CLKD_MASK;
reg_val |= EMAC_MAC_MCFG_MII_CLKD_72;
writel(reg_val, db->membase + EMAC_MAC_MCFG_REG);

/* clear RX counter */
Expand Down Expand Up @@ -506,7 +506,7 @@ static void emac_init_device(struct net_device *dev)

/* enable RX/TX0/RX Hlevel interrup */
reg_val = readl(db->membase + EMAC_INT_CTL_REG);
reg_val |= (0xf << 0) | (0x01 << 8);
reg_val |= (EMAC_INT_CTL_TX_EN | EMAC_INT_CTL_TX_ABRT_EN | EMAC_INT_CTL_RX_EN);
writel(reg_val, db->membase + EMAC_INT_CTL_REG);

spin_unlock_irqrestore(&db->lock, flags);
Expand Down Expand Up @@ -637,7 +637,9 @@ static void emac_rx(struct net_device *dev)
if (!rxcount) {
db->emacrx_completed_flag = 1;
reg_val = readl(db->membase + EMAC_INT_CTL_REG);
reg_val |= (0xf << 0) | (0x01 << 8);
reg_val |= (EMAC_INT_CTL_TX_EN |
EMAC_INT_CTL_TX_ABRT_EN |
EMAC_INT_CTL_RX_EN);
writel(reg_val, db->membase + EMAC_INT_CTL_REG);

/* had one stuck? */
Expand Down Expand Up @@ -669,7 +671,9 @@ static void emac_rx(struct net_device *dev)
writel(reg_val | EMAC_CTL_RX_EN,
db->membase + EMAC_CTL_REG);
reg_val = readl(db->membase + EMAC_INT_CTL_REG);
reg_val |= (0xf << 0) | (0x01 << 8);
reg_val |= (EMAC_INT_CTL_TX_EN |
EMAC_INT_CTL_TX_ABRT_EN |
EMAC_INT_CTL_RX_EN);
writel(reg_val, db->membase + EMAC_INT_CTL_REG);

db->emacrx_completed_flag = 1;
Expand Down Expand Up @@ -783,20 +787,20 @@ static irqreturn_t emac_interrupt(int irq, void *dev_id)
}

/* Transmit Interrupt check */
if (int_status & (0x01 | 0x02))
if (int_status & EMAC_INT_STA_TX_COMPLETE)
emac_tx_done(dev, db, int_status);

if (int_status & (0x04 | 0x08))
if (int_status & EMAC_INT_STA_TX_ABRT)
netdev_info(dev, " ab : %x\n", int_status);

/* Re-enable interrupt mask */
if (db->emacrx_completed_flag == 1) {
reg_val = readl(db->membase + EMAC_INT_CTL_REG);
reg_val |= (0xf << 0) | (0x01 << 8);
reg_val |= (EMAC_INT_CTL_TX_EN | EMAC_INT_CTL_TX_ABRT_EN | EMAC_INT_CTL_RX_EN);
writel(reg_val, db->membase + EMAC_INT_CTL_REG);
} else {
reg_val = readl(db->membase + EMAC_INT_CTL_REG);
reg_val |= (0xf << 0);
reg_val |= (EMAC_INT_CTL_TX_EN | EMAC_INT_CTL_TX_ABRT_EN);
writel(reg_val, db->membase + EMAC_INT_CTL_REG);
}

Expand Down
18 changes: 18 additions & 0 deletions drivers/net/ethernet/allwinner/sun4i-emac.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,7 @@
#define EMAC_RX_CTL_REG (0x3c)
#define EMAC_RX_CTL_AUTO_DRQ_EN (1 << 1)
#define EMAC_RX_CTL_DMA_EN (1 << 2)
#define EMAC_RX_CTL_FLUSH_FIFO (1 << 3)
#define EMAC_RX_CTL_PASS_ALL_EN (1 << 4)
#define EMAC_RX_CTL_PASS_CTL_EN (1 << 5)
#define EMAC_RX_CTL_PASS_CRC_ERR_EN (1 << 6)
Expand All @@ -61,7 +62,21 @@
#define EMAC_RX_IO_DATA_STATUS_OK (1 << 7)
#define EMAC_RX_FBC_REG (0x50)
#define EMAC_INT_CTL_REG (0x54)
#define EMAC_INT_CTL_RX_EN (1 << 8)
#define EMAC_INT_CTL_TX0_EN (1)
#define EMAC_INT_CTL_TX1_EN (1 << 1)
#define EMAC_INT_CTL_TX_EN (EMAC_INT_CTL_TX0_EN | EMAC_INT_CTL_TX1_EN)
#define EMAC_INT_CTL_TX0_ABRT_EN (0x1 << 2)
#define EMAC_INT_CTL_TX1_ABRT_EN (0x1 << 3)
#define EMAC_INT_CTL_TX_ABRT_EN (EMAC_INT_CTL_TX0_ABRT_EN | EMAC_INT_CTL_TX1_ABRT_EN)
#define EMAC_INT_STA_REG (0x58)
#define EMAC_INT_STA_TX0_COMPLETE (0x1)
#define EMAC_INT_STA_TX1_COMPLETE (0x1 << 1)
#define EMAC_INT_STA_TX_COMPLETE (EMAC_INT_STA_TX0_COMPLETE | EMAC_INT_STA_TX1_COMPLETE)
#define EMAC_INT_STA_TX0_ABRT (0x1 << 2)
#define EMAC_INT_STA_TX1_ABRT (0x1 << 3)
#define EMAC_INT_STA_TX_ABRT (EMAC_INT_STA_TX0_ABRT | EMAC_INT_STA_TX1_ABRT)
#define EMAC_INT_STA_RX_COMPLETE (0x1 << 8)
#define EMAC_MAC_CTL0_REG (0x5c)
#define EMAC_MAC_CTL0_RX_FLOW_CTL_EN (1 << 2)
#define EMAC_MAC_CTL0_TX_FLOW_CTL_EN (1 << 3)
Expand All @@ -87,8 +102,11 @@
#define EMAC_MAC_CLRT_RM (0x0f)
#define EMAC_MAC_MAXF_REG (0x70)
#define EMAC_MAC_SUPP_REG (0x74)
#define EMAC_MAC_SUPP_100M (0x1 << 8)
#define EMAC_MAC_TEST_REG (0x78)
#define EMAC_MAC_MCFG_REG (0x7c)
#define EMAC_MAC_MCFG_MII_CLKD_MASK (0xff << 2)
#define EMAC_MAC_MCFG_MII_CLKD_72 (0x0d << 2)
#define EMAC_MAC_A0_REG (0x98)
#define EMAC_MAC_A1_REG (0x9c)
#define EMAC_MAC_A2_REG (0xa0)
Expand Down

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