From: Akinobu Mita Date: Thu, 14 Apr 2016 15:11:29 +0000 (+0900) Subject: net: w5100: move mmiowb into register access callbacks X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d6586d2ef4608f113df16ca8ca757563891389ce;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git net: w5100: move mmiowb into register access callbacks Instead of sprinkle mmiowb over the driver code, move it into primary register write callbacks. (w5100_write, w5100_write16, w5100_writebuf) This is a preparation for supporting SPI interface which doesn't use MMIO for accessing w5100 registers. Signed-off-by: Akinobu Mita Cc: Mike Sinkovsky Cc: David S. Miller Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/wiznet/w5100.c b/drivers/net/ethernet/wiznet/w5100.c index 8b282d0b169c..f4b7200bc0f5 100644 --- a/drivers/net/ethernet/wiznet/w5100.c +++ b/drivers/net/ethernet/wiznet/w5100.c @@ -122,10 +122,17 @@ static inline u8 w5100_read_direct(struct w5100_priv *priv, u16 addr) return ioread8(priv->base + (addr << CONFIG_WIZNET_BUS_SHIFT)); } +static inline void __w5100_write_direct(struct w5100_priv *priv, u16 addr, + u8 data) +{ + iowrite8(data, priv->base + (addr << CONFIG_WIZNET_BUS_SHIFT)); +} + static inline void w5100_write_direct(struct w5100_priv *priv, u16 addr, u8 data) { - iowrite8(data, priv->base + (addr << CONFIG_WIZNET_BUS_SHIFT)); + __w5100_write_direct(priv, addr, data); + mmiowb(); } static u16 w5100_read16_direct(struct w5100_priv *priv, u16 addr) @@ -138,8 +145,9 @@ static u16 w5100_read16_direct(struct w5100_priv *priv, u16 addr) static void w5100_write16_direct(struct w5100_priv *priv, u16 addr, u16 data) { - w5100_write_direct(priv, addr, data >> 8); - w5100_write_direct(priv, addr + 1, data); + __w5100_write_direct(priv, addr, data >> 8); + __w5100_write_direct(priv, addr + 1, data); + mmiowb(); } static void w5100_readbuf_direct(struct w5100_priv *priv, @@ -164,8 +172,9 @@ static void w5100_writebuf_direct(struct w5100_priv *priv, for (i = 0; i < len; i++, addr++) { if (unlikely(addr > W5100_TX_MEM_END)) addr = W5100_TX_MEM_START; - w5100_write_direct(priv, addr, *buf++); + __w5100_write_direct(priv, addr, *buf++); } + mmiowb(); } /* @@ -186,7 +195,6 @@ static u8 w5100_read_indirect(struct w5100_priv *priv, u16 addr) spin_lock_irqsave(&priv->reg_lock, flags); w5100_write16_direct(priv, W5100_IDM_AR, addr); - mmiowb(); data = w5100_read_direct(priv, W5100_IDM_DR); spin_unlock_irqrestore(&priv->reg_lock, flags); @@ -199,9 +207,7 @@ static void w5100_write_indirect(struct w5100_priv *priv, u16 addr, u8 data) spin_lock_irqsave(&priv->reg_lock, flags); w5100_write16_direct(priv, W5100_IDM_AR, addr); - mmiowb(); w5100_write_direct(priv, W5100_IDM_DR, data); - mmiowb(); spin_unlock_irqrestore(&priv->reg_lock, flags); } @@ -212,7 +218,6 @@ static u16 w5100_read16_indirect(struct w5100_priv *priv, u16 addr) spin_lock_irqsave(&priv->reg_lock, flags); w5100_write16_direct(priv, W5100_IDM_AR, addr); - mmiowb(); data = w5100_read_direct(priv, W5100_IDM_DR) << 8; data |= w5100_read_direct(priv, W5100_IDM_DR); spin_unlock_irqrestore(&priv->reg_lock, flags); @@ -226,10 +231,8 @@ static void w5100_write16_indirect(struct w5100_priv *priv, u16 addr, u16 data) spin_lock_irqsave(&priv->reg_lock, flags); w5100_write16_direct(priv, W5100_IDM_AR, addr); - mmiowb(); - w5100_write_direct(priv, W5100_IDM_DR, data >> 8); + __w5100_write_direct(priv, W5100_IDM_DR, data >> 8); w5100_write_direct(priv, W5100_IDM_DR, data); - mmiowb(); spin_unlock_irqrestore(&priv->reg_lock, flags); } @@ -242,13 +245,11 @@ static void w5100_readbuf_indirect(struct w5100_priv *priv, spin_lock_irqsave(&priv->reg_lock, flags); w5100_write16_direct(priv, W5100_IDM_AR, addr); - mmiowb(); for (i = 0; i < len; i++, addr++) { if (unlikely(addr > W5100_RX_MEM_END)) { addr = W5100_RX_MEM_START; w5100_write16_direct(priv, W5100_IDM_AR, addr); - mmiowb(); } *buf++ = w5100_read_direct(priv, W5100_IDM_DR); } @@ -265,15 +266,13 @@ static void w5100_writebuf_indirect(struct w5100_priv *priv, spin_lock_irqsave(&priv->reg_lock, flags); w5100_write16_direct(priv, W5100_IDM_AR, addr); - mmiowb(); for (i = 0; i < len; i++, addr++) { if (unlikely(addr > W5100_TX_MEM_END)) { addr = W5100_TX_MEM_START; w5100_write16_direct(priv, W5100_IDM_AR, addr); - mmiowb(); } - w5100_write_direct(priv, W5100_IDM_DR, *buf++); + __w5100_write_direct(priv, W5100_IDM_DR, *buf++); } mmiowb(); spin_unlock_irqrestore(&priv->reg_lock, flags); @@ -309,7 +308,6 @@ static int w5100_command(struct w5100_priv *priv, u16 cmd) unsigned long timeout = jiffies + msecs_to_jiffies(100); w5100_write(priv, W5100_S0_CR, cmd); - mmiowb(); while (w5100_read(priv, W5100_S0_CR) != 0) { if (time_after(jiffies, timeout)) @@ -327,18 +325,15 @@ static void w5100_write_macaddr(struct w5100_priv *priv) for (i = 0; i < ETH_ALEN; i++) w5100_write(priv, W5100_SHAR + i, ndev->dev_addr[i]); - mmiowb(); } static void w5100_hw_reset(struct w5100_priv *priv) { w5100_write_direct(priv, W5100_MR, MR_RST); - mmiowb(); mdelay(5); w5100_write_direct(priv, W5100_MR, priv->indirect ? MR_PB | MR_AI | MR_IND : MR_PB); - mmiowb(); w5100_write(priv, W5100_IMR, 0); w5100_write_macaddr(priv); @@ -347,23 +342,19 @@ static void w5100_hw_reset(struct w5100_priv *priv) */ w5100_write(priv, W5100_RMSR, 0x03); w5100_write(priv, W5100_TMSR, 0x03); - mmiowb(); } static void w5100_hw_start(struct w5100_priv *priv) { w5100_write(priv, W5100_S0_MR, priv->promisc ? S0_MR_MACRAW : S0_MR_MACRAW_MF); - mmiowb(); w5100_command(priv, S0_CR_OPEN); w5100_write(priv, W5100_IMR, IR_S0); - mmiowb(); } static void w5100_hw_close(struct w5100_priv *priv) { w5100_write(priv, W5100_IMR, 0); - mmiowb(); w5100_command(priv, S0_CR_CLOSE); } @@ -447,7 +438,6 @@ static int w5100_start_tx(struct sk_buff *skb, struct net_device *ndev) offset = w5100_read16(priv, W5100_S0_TX_WR); w5100_writebuf(priv, offset, skb->data, skb->len); w5100_write16(priv, W5100_S0_TX_WR, offset + skb->len); - mmiowb(); ndev->stats.tx_bytes += skb->len; ndev->stats.tx_packets++; dev_kfree_skb(skb); @@ -488,7 +478,6 @@ static int w5100_napi_poll(struct napi_struct *napi, int budget) skb_put(skb, rx_len); w5100_readbuf(priv, offset + 2, skb->data, rx_len); w5100_write16(priv, W5100_S0_RX_RD, offset + 2 + rx_len); - mmiowb(); w5100_command(priv, S0_CR_RECV); skb->protocol = eth_type_trans(skb, ndev); @@ -500,7 +489,6 @@ static int w5100_napi_poll(struct napi_struct *napi, int budget) if (rx_count < budget) { napi_complete(napi); w5100_write(priv, W5100_IMR, IR_S0); - mmiowb(); } return rx_count; @@ -515,7 +503,6 @@ static irqreturn_t w5100_interrupt(int irq, void *ndev_instance) if (!ir) return IRQ_NONE; w5100_write(priv, W5100_S0_IR, ir); - mmiowb(); if (ir & S0_IR_SENDOK) { netif_dbg(priv, tx_done, ndev, "tx done\n"); @@ -525,7 +512,6 @@ static irqreturn_t w5100_interrupt(int irq, void *ndev_instance) if (ir & S0_IR_RECV) { if (napi_schedule_prep(&priv->napi)) { w5100_write(priv, W5100_IMR, 0); - mmiowb(); __napi_schedule(&priv->napi); } }