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openwrt-xburst/target/linux/coldfire/patches/023-Replace-readl-and-writel-for-FEC-driver.patch
kaloz 7e7649baa9 [coldfire]: switch to 2.6.38 
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31546 3c298f89-4303-0410-b956-a3cf2f4a3e73
2012-05-01 07:00:17 +00:00

358 lines
12 KiB
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From f7df9a8f3ce3a600ceeb7302bf0de899f321c818 Mon Sep 17 00:00:00 2001
From: Alison Wang <b18965@freescale.com>
Date: Thu, 4 Aug 2011 09:59:45 +0800
Subject: [PATCH 23/52] Replace readl and writel for FEC driver
Replace readl and writel by fec_readl and fec_writel
for FEC driver.
Signed-off-by: Alison Wang <b18965@freescale.com>
---
drivers/net/fec.c | 129 ++++++++++++++++++++++++++++-------------------------
1 files changed, 68 insertions(+), 61 deletions(-)
--- a/drivers/net/fec.c
+++ b/drivers/net/fec.c
@@ -244,6 +244,11 @@ static void fec_stop(struct net_device *
/* Transmitter timeout */
#define TX_TIMEOUT (2 * HZ)
+#define fec_readl(addr) \
+ ({ unsigned int __v = (*(volatile unsigned int *) (addr)); __v; })
+#define fec_writel(b, addr) \
+ (void)((*(volatile unsigned int *) (addr)) = (b))
+
static void *swap_buffer(void *bufaddr, int len)
{
int i;
@@ -347,7 +352,7 @@ fec_enet_start_xmit(struct sk_buff *skb,
bdp->cbd_sc = status;
/* Trigger transmission start */
- writel(0, fep->hwp + FEC_X_DES_ACTIVE);
+ fec_writel(0, fep->hwp + FEC_X_DES_ACTIVE);
/* If this was the last BD in the ring, start at the beginning again. */
if (status & BD_ENET_TX_WRAP)
@@ -390,8 +395,8 @@ fec_enet_interrupt(int irq, void * dev_i
irqreturn_t ret = IRQ_NONE;
do {
- int_events = readl(fep->hwp + FEC_IEVENT);
- writel(int_events, fep->hwp + FEC_IEVENT);
+ int_events = fec_readl(fep->hwp + FEC_IEVENT);
+ fec_writel(int_events, fep->hwp + FEC_IEVENT);
#ifdef CONFIG_FEC_1588
if (__raw_readb(MCF_DTIM1_DTER) & MCF_DTIM_DTER_REF)
@@ -646,7 +651,7 @@ rx_processing_done:
* incoming frames. On a heavily loaded network, we should be
* able to keep up at the expense of system resources.
*/
- writel(0, fep->hwp + FEC_R_DES_ACTIVE);
+ fec_writel(0, fep->hwp + FEC_R_DES_ACTIVE);
}
fep->cur_rx = bdp;
@@ -686,9 +691,9 @@ static void __inline__ fec_get_mac(struc
*/
if (!is_valid_ether_addr(iap)) {
*((unsigned long *) &tmpaddr[0]) =
- be32_to_cpu(readl(fep->hwp + FEC_ADDR_LOW));
+ be32_to_cpu(fec_readl(fep->hwp + FEC_ADDR_LOW));
*((unsigned short *) &tmpaddr[4]) =
- be16_to_cpu(readl(fep->hwp + FEC_ADDR_HIGH) >> 16);
+ be16_to_cpu(fec_readl(fep->hwp + FEC_ADDR_HIGH) >> 16);
iap = &tmpaddr[0];
}
@@ -740,9 +745,9 @@ static void fec_enet_adjust_link(struct
if (id_entry->driver_data & FEC_QUIRK_ENET_MAC)
#ifdef CONFIG_FEC_1588
- writel(0x00000012, fep->hwp + FEC_ECNTRL);
+ fec_writel(0x00000012, fep->hwp + FEC_ECNTRL);
#else
- writel(0x00000002, fep->hwp + FEC_ECNTRL);
+ fec_writel(0x00000002, fep->hwp + FEC_ECNTRL);
#endif
status_change = 1;
}
@@ -763,7 +768,7 @@ static int fec_enet_mdio_read(struct mii
init_completion(&fep->mdio_done);
/* start a read op */
- writel(FEC_MMFR_ST | FEC_MMFR_OP_READ |
+ fec_writel(FEC_MMFR_ST | FEC_MMFR_OP_READ |
FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(regnum) |
FEC_MMFR_TA, fep->hwp + FEC_MII_DATA);
@@ -777,7 +782,7 @@ static int fec_enet_mdio_read(struct mii
}
/* return value */
- return FEC_MMFR_DATA(readl(fep->hwp + FEC_MII_DATA));
+ return FEC_MMFR_DATA(fec_readl(fep->hwp + FEC_MII_DATA));
}
static int fec_enet_mdio_write(struct mii_bus *bus, int mii_id, int regnum,
@@ -790,7 +795,7 @@ static int fec_enet_mdio_write(struct mi
init_completion(&fep->mdio_done);
/* start a write op */
- writel(FEC_MMFR_ST | FEC_MMFR_OP_WRITE |
+ fec_writel(FEC_MMFR_ST | FEC_MMFR_OP_WRITE |
FEC_MMFR_PA(mii_id) | FEC_MMFR_RA(regnum) |
FEC_MMFR_TA | FEC_MMFR_DATA(value),
fep->hwp + FEC_MII_DATA);
@@ -905,7 +910,7 @@ static int fec_enet_mii_init(struct plat
* Set MII speed to 2.5 MHz (= clk_get_rate() / 2 * phy_speed)
*/
fep->phy_speed = DIV_ROUND_UP(clk_get_rate(fep->clk), 5000000) << 1;
- writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED);
+ fec_writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED);
fep->mii_bus = mdiobus_alloc();
if (fep->mii_bus == NULL) {
@@ -1151,30 +1156,30 @@ static void set_multicast_list(struct ne
unsigned char hash;
if (dev->flags & IFF_PROMISC) {
- tmp = readl(fep->hwp + FEC_R_CNTRL);
+ tmp = fec_readl(fep->hwp + FEC_R_CNTRL);
tmp |= 0x8;
- writel(tmp, fep->hwp + FEC_R_CNTRL);
+ fec_writel(tmp, fep->hwp + FEC_R_CNTRL);
return;
}
- tmp = readl(fep->hwp + FEC_R_CNTRL);
+ tmp = fec_readl(fep->hwp + FEC_R_CNTRL);
tmp &= ~0x8;
- writel(tmp, fep->hwp + FEC_R_CNTRL);
+ fec_writel(tmp, fep->hwp + FEC_R_CNTRL);
if (dev->flags & IFF_ALLMULTI) {
/* Catch all multicast addresses, so set the
* filter to all 1's
*/
- writel(0xffffffff, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
- writel(0xffffffff, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
+ fec_writel(0xffffffff, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
+ fec_writel(0xffffffff, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
return;
}
/* Clear filter and add the addresses in hash register
*/
- writel(0, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
- writel(0, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
+ fec_writel(0, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
+ fec_writel(0, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
netdev_for_each_mc_addr(ha, dev) {
/* Only support group multicast for now */
@@ -1198,13 +1203,13 @@ static void set_multicast_list(struct ne
hash = (crc >> (32 - HASH_BITS)) & 0x3f;
if (hash > 31) {
- tmp = readl(fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
+ tmp = fec_readl(fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
tmp |= 1 << (hash - 32);
- writel(tmp, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
+ fec_writel(tmp, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
} else {
- tmp = readl(fep->hwp + FEC_GRP_HASH_TABLE_LOW);
+ tmp = fec_readl(fep->hwp + FEC_GRP_HASH_TABLE_LOW);
tmp |= 1 << hash;
- writel(tmp, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
+ fec_writel(tmp, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
}
}
}
@@ -1221,10 +1226,10 @@ fec_set_mac_address(struct net_device *d
memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
- writel(dev->dev_addr[3] | (dev->dev_addr[2] << 8) |
+ fec_writel(dev->dev_addr[3] | (dev->dev_addr[2] << 8) |
(dev->dev_addr[1] << 16) | (dev->dev_addr[0] << 24),
fep->hwp + FEC_ADDR_LOW);
- writel((dev->dev_addr[5] << 16) | (dev->dev_addr[4] << 24),
+ fec_writel((dev->dev_addr[5] << 16) | (dev->dev_addr[4] << 24),
fep->hwp + FEC_ADDR_HIGH);
return 0;
}
@@ -1323,7 +1328,7 @@ fec_restart(struct net_device *dev, int
u32 val, temp_mac[2];
/* Whack a reset. We should wait for this. */
- writel(1, fep->hwp + FEC_ECNTRL);
+ fec_writel(1, fep->hwp + FEC_ECNTRL);
udelay(10);
/*
@@ -1332,31 +1337,32 @@ fec_restart(struct net_device *dev, int
*/
if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) {
memcpy(&temp_mac, dev->dev_addr, ETH_ALEN);
- writel(cpu_to_be32(temp_mac[0]), fep->hwp + FEC_ADDR_LOW);
- writel(cpu_to_be32(temp_mac[1]), fep->hwp + FEC_ADDR_HIGH);
+ fec_writel(cpu_to_be32(temp_mac[0]), fep->hwp + FEC_ADDR_LOW);
+ fec_writel(cpu_to_be32(temp_mac[1]), fep->hwp + FEC_ADDR_HIGH);
}
#ifdef CONFIG_FEC_1588
- writel(0x7fff8000, fep->hwp + FEC_IEVENT);
+ fec_writel(0x7fff8000, fep->hwp + FEC_IEVENT);
#else
/* Clear any outstanding interrupt. */
- writel(0xffc00000, fep->hwp + FEC_IEVENT);
+ fec_writel(0xffc00000, fep->hwp + FEC_IEVENT);
#endif
/* Reset all multicast. */
- writel(0, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
- writel(0, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
+ fec_writel(0, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
+ fec_writel(0, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
#ifndef CONFIG_M5272
- writel(0, fep->hwp + FEC_HASH_TABLE_HIGH);
- writel(0, fep->hwp + FEC_HASH_TABLE_LOW);
+ fec_writel(0, fep->hwp + FEC_HASH_TABLE_HIGH);
+ fec_writel(0, fep->hwp + FEC_HASH_TABLE_LOW);
#endif
/* Set maximum receive buffer size. */
- writel(PKT_MAXBLR_SIZE, fep->hwp + FEC_R_BUFF_SIZE);
+ fec_writel(PKT_MAXBLR_SIZE, fep->hwp + FEC_R_BUFF_SIZE);
/* Set receive and transmit descriptor base. */
- writel(fep->bd_dma, fep->hwp + FEC_R_DES_START);
- writel((unsigned long)fep->bd_dma + sizeof(struct bufdesc) * RX_RING_SIZE,
+ fec_writel(fep->bd_dma, fep->hwp + FEC_R_DES_START);
+ fec_writel((unsigned long)fep->bd_dma +
+ sizeof(struct bufdesc) * RX_RING_SIZE,
fep->hwp + FEC_X_DES_START);
fep->dirty_tx = fep->cur_tx = fep->tx_bd_base;
@@ -1374,24 +1380,24 @@ fec_restart(struct net_device *dev, int
/* Enable MII mode */
if (duplex) {
/* MII enable / FD enable */
- writel(OPT_FRAME_SIZE | 0x04, fep->hwp + FEC_R_CNTRL);
- writel(0x04, fep->hwp + FEC_X_CNTRL);
+ fec_writel(OPT_FRAME_SIZE | 0x04, fep->hwp + FEC_R_CNTRL);
+ fec_writel(0x04, fep->hwp + FEC_X_CNTRL);
} else {
/* MII enable / No Rcv on Xmit */
- writel(OPT_FRAME_SIZE | 0x06, fep->hwp + FEC_R_CNTRL);
- writel(0x0, fep->hwp + FEC_X_CNTRL);
+ fec_writel(OPT_FRAME_SIZE | 0x06, fep->hwp + FEC_R_CNTRL);
+ fec_writel(0x0, fep->hwp + FEC_X_CNTRL);
}
fep->full_duplex = duplex;
/* Set MII speed */
- writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED);
+ fec_writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED);
/*
* The phy interface and speed need to get configured
* differently on enet-mac.
*/
if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) {
- val = readl(fep->hwp + FEC_R_CNTRL);
+ val = fec_readl(fep->hwp + FEC_R_CNTRL);
/* MII or RMII */
if (fep->phy_interface == PHY_INTERFACE_MODE_RMII)
@@ -1405,23 +1411,23 @@ fec_restart(struct net_device *dev, int
else
val |= (1 << 9);
- writel(val, fep->hwp + FEC_R_CNTRL);
+ fec_writel(val, fep->hwp + FEC_R_CNTRL);
} else {
#ifdef FEC_MIIGSK_ENR
if (fep->phy_interface == PHY_INTERFACE_MODE_RMII) {
/* disable the gasket and wait */
- writel(0, fep->hwp + FEC_MIIGSK_ENR);
- while (readl(fep->hwp + FEC_MIIGSK_ENR) & 4)
+ fec_writel(0, fep->hwp + FEC_MIIGSK_ENR);
+ while (fec_readl(fep->hwp + FEC_MIIGSK_ENR) & 4)
udelay(1);
/*
* configure the gasket:
* RMII, 50 MHz, no loopback, no echo
*/
- writel(1, fep->hwp + FEC_MIIGSK_CFGR);
+ fec_writel(1, fep->hwp + FEC_MIIGSK_CFGR);
/* re-enable the gasket */
- writel(2, fep->hwp + FEC_MIIGSK_ENR);
+ fec_writel(2, fep->hwp + FEC_MIIGSK_ENR);
}
#endif
}
@@ -1433,22 +1439,22 @@ fec_restart(struct net_device *dev, int
ret = fec_ptp_start(fep->ptp_priv);
if (ret) {
fep->ptimer_present = 0;
- writel(2, fep->hwp + FEC_ECNTRL);
+ fec_writel(2, fep->hwp + FEC_ECNTRL);
} else {
- val = readl(fep->hwp + FEC_ECNTRL);
+ val = fec_readl(fep->hwp + FEC_ECNTRL);
val |= 0x00000012;
- writel(val, fep->hwp + FEC_ECNTRL);
+ fec_writel(val, fep->hwp + FEC_ECNTRL);
}
} else
- writel(2, fep->hwp + FEC_ECNTRL);
+ fec_writel(2, fep->hwp + FEC_ECNTRL);
#else
/* And last, enable the transmit and receive processing */
- writel(2, fep->hwp + FEC_ECNTRL);
+ fec_writel(2, fep->hwp + FEC_ECNTRL);
#endif
- writel(0, fep->hwp + FEC_R_DES_ACTIVE);
+ fec_writel(0, fep->hwp + FEC_R_DES_ACTIVE);
/* Enable interrupts we wish to service */
- writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK);
+ fec_writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK);
}
static void
@@ -1458,21 +1464,22 @@ fec_stop(struct net_device *dev)
/* We cannot expect a graceful transmit stop without link !!! */
if (fep->link) {
- writel(1, fep->hwp + FEC_X_CNTRL); /* Graceful transmit stop */
+ /* Graceful transmit stop */
+ fec_writel(1, fep->hwp + FEC_X_CNTRL);
udelay(10);
- if (!(readl(fep->hwp + FEC_IEVENT) & FEC_ENET_GRA))
+ if (!(fec_readl(fep->hwp + FEC_IEVENT) & FEC_ENET_GRA))
printk("fec_stop : Graceful transmit stop did not complete !\n");
}
/* Whack a reset. We should wait for this. */
- writel(1, fep->hwp + FEC_ECNTRL);
+ fec_writel(1, fep->hwp + FEC_ECNTRL);
udelay(10);
- writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED);
+ fec_writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED);
#ifdef CONFIG_FEC_1588
if (fep->ptimer_present)
fec_ptp_stop(fep->ptp_priv);
#endif
- writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK);
+ fec_writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK);
}
static int __devinit
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