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Commit 54109da3 authored by David S. Miller's avatar David S. Miller
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Merge branch 'macb-fixes' 

Andy Shevchenko says:

====================
net/macb: fix for AVR32 and clean up

It seems no one had tested recently the driver on AVR32 platforms such as
ATNGW100. This series bring it back to work.
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents dfbafc99 e018a0cc
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Showing with 108 additions and 65 deletions
drivers/net/ethernet/cadence/macb.c
View file @ 54109da3
......@@ -104,6 +104,57 @@ static void *macb_rx_buffer(struct macb *bp, unsigned int index)
return bp->rx_buffers + bp->rx_buffer_size * macb_rx_ring_wrap(index);
}
/* I/O accessors */
static u32 hw_readl_native(struct macb *bp, int offset)
{
return __raw_readl(bp->regs + offset);
}
static void hw_writel_native(struct macb *bp, int offset, u32 value)
{
__raw_writel(value, bp->regs + offset);
}
static u32 hw_readl(struct macb *bp, int offset)
{
return readl_relaxed(bp->regs + offset);
}
static void hw_writel(struct macb *bp, int offset, u32 value)
{
writel_relaxed(value, bp->regs + offset);
}
/*
* Find the CPU endianness by using the loopback bit of NCR register. When the
* CPU is in big endian we need to program swaped mode for management
* descriptor access.
*/
static bool hw_is_native_io(void __iomem *addr)
{
u32 value = MACB_BIT(LLB);
__raw_writel(value, addr + MACB_NCR);
value = __raw_readl(addr + MACB_NCR);
/* Write 0 back to disable everything */
__raw_writel(0, addr + MACB_NCR);
return value == MACB_BIT(LLB);
}
static bool hw_is_gem(void __iomem *addr, bool native_io)
{
u32 id;
if (native_io)
id = __raw_readl(addr + MACB_MID);
else
id = readl_relaxed(addr + MACB_MID);
return MACB_BFEXT(IDNUM, id) >= 0x2;
}
static void macb_set_hwaddr(struct macb *bp)
{
u32 bottom;
......@@ -160,7 +211,7 @@ static void macb_get_hwaddr(struct macb *bp)
}
}
netdev_info(bp->dev, "invalid hw address, using random\n");
dev_info(&bp->pdev->dev, "invalid hw address, using random\n");
eth_hw_addr_random(bp->dev);
}
......@@ -252,7 +303,6 @@ static void macb_handle_link_change(struct net_device *dev)
struct macb *bp = netdev_priv(dev);
struct phy_device *phydev = bp->phy_dev;
unsigned long flags;
int status_change = 0;
spin_lock_irqsave(&bp->lock, flags);
......@@ -449,14 +499,14 @@ static int macb_mii_init(struct macb *bp)
static void macb_update_stats(struct macb *bp)
{
u32 __iomem *reg = bp->regs + MACB_PFR;
u32 *p = &bp->hw_stats.macb.rx_pause_frames;
u32 *end = &bp->hw_stats.macb.tx_pause_frames + 1;
int offset = MACB_PFR;
WARN_ON((unsigned long)(end - p - 1) != (MACB_TPF - MACB_PFR) / 4);
for(; p < end; p++, reg++)
*p += readl_relaxed(reg);
for(; p < end; p++, offset += 4)
*p += bp->readl(bp, offset);
}
static int macb_halt_tx(struct macb *bp)
......@@ -1107,12 +1157,6 @@ static void macb_poll_controller(struct net_device *dev)
}
#endif
static inline unsigned int macb_count_tx_descriptors(struct macb *bp,
unsigned int len)
{
return (len + bp->max_tx_length - 1) / bp->max_tx_length;
}
static unsigned int macb_tx_map(struct macb *bp,
struct macb_queue *queue,
struct sk_buff *skb)
......@@ -1263,11 +1307,11 @@ static int macb_start_xmit(struct sk_buff *skb, struct net_device *dev)
* socket buffer: skb fragments of jumbo frames may need to be
* splitted into many buffer descriptors.
*/
count = macb_count_tx_descriptors(bp, skb_headlen(skb));
count = DIV_ROUND_UP(skb_headlen(skb), bp->max_tx_length);
nr_frags = skb_shinfo(skb)->nr_frags;
for (f = 0; f < nr_frags; f++) {
frag_size = skb_frag_size(&skb_shinfo(skb)->frags[f]);
count += macb_count_tx_descriptors(bp, frag_size);
count += DIV_ROUND_UP(frag_size, bp->max_tx_length);
}
spin_lock_irqsave(&bp->lock, flags);
......@@ -1603,7 +1647,6 @@ static u32 macb_dbw(struct macb *bp)
static void macb_configure_dma(struct macb *bp)
{
u32 dmacfg;
u32 tmp, ncr;
if (macb_is_gem(bp)) {
dmacfg = gem_readl(bp, DMACFG) & ~GEM_BF(RXBS, -1L);
......@@ -1613,22 +1656,11 @@ static void macb_configure_dma(struct macb *bp)
dmacfg |= GEM_BIT(TXPBMS) | GEM_BF(RXBMS, -1L);
dmacfg &= ~GEM_BIT(ENDIA_PKT);
/* Find the CPU endianness by using the loopback bit of net_ctrl
* register. save it first. When the CPU is in big endian we
* need to program swaped mode for management descriptor access.
*/
ncr = macb_readl(bp, NCR);
__raw_writel(MACB_BIT(LLB), bp->regs + MACB_NCR);
tmp = __raw_readl(bp->regs + MACB_NCR);
if (tmp == MACB_BIT(LLB))
if (bp->native_io)
dmacfg &= ~GEM_BIT(ENDIA_DESC);
else
dmacfg |= GEM_BIT(ENDIA_DESC); /* CPU in big endian */
/* Restore net_ctrl */
macb_writel(bp, NCR, ncr);
if (bp->dev->features & NETIF_F_HW_CSUM)
dmacfg |= GEM_BIT(TXCOEN);
else
......@@ -1897,19 +1929,19 @@ static int macb_change_mtu(struct net_device *dev, int new_mtu)
static void gem_update_stats(struct macb *bp)
{
int i;
unsigned int i;
u32 *p = &bp->hw_stats.gem.tx_octets_31_0;
for (i = 0; i < GEM_STATS_LEN; ++i, ++p) {
u32 offset = gem_statistics[i].offset;
u64 val = readl_relaxed(bp->regs + offset);
u64 val = bp->readl(bp, offset);
bp->ethtool_stats[i] += val;
*p += val;
if (offset == GEM_OCTTXL || offset == GEM_OCTRXL) {
/* Add GEM_OCTTXH, GEM_OCTRXH */
val = readl_relaxed(bp->regs + offset + 4);
val = bp->readl(bp, offset + 4);
bp->ethtool_stats[i] += ((u64)val) << 32;
*(++p) += val;
}
......@@ -1976,7 +2008,7 @@ static int gem_get_sset_count(struct net_device *dev, int sset)
static void gem_get_ethtool_strings(struct net_device *dev, u32 sset, u8 *p)
{
int i;
unsigned int i;
switch (sset) {
case ETH_SS_STATS:
......@@ -2190,7 +2222,7 @@ static void macb_configure_caps(struct macb *bp, const struct macb_config *dt_co
if (dt_conf)
bp->caps = dt_conf->caps;
if (macb_is_gem_hw(bp->regs)) {
if (hw_is_gem(bp->regs, bp->native_io)) {
bp->caps |= MACB_CAPS_MACB_IS_GEM;
dcfg = gem_readl(bp, DCFG1);
......@@ -2201,10 +2233,11 @@ static void macb_configure_caps(struct macb *bp, const struct macb_config *dt_co
bp->caps |= MACB_CAPS_FIFO_MODE;
}
netdev_dbg(bp->dev, "Cadence caps 0x%08x\n", bp->caps);
dev_dbg(&bp->pdev->dev, "Cadence caps 0x%08x\n", bp->caps);
}
static void macb_probe_queues(void __iomem *mem,
bool native_io,
unsigned int *queue_mask,
unsigned int *num_queues)
{
......@@ -2219,7 +2252,7 @@ static void macb_probe_queues(void __iomem *mem,
* we are early in the probe process and don't have the
* MACB_CAPS_MACB_IS_GEM flag positioned
*/
if (!macb_is_gem_hw(mem))
if (!hw_is_gem(mem, native_io))
return;
/* bit 0 is never set but queue 0 always exists */
......@@ -2786,6 +2819,7 @@ static int macb_probe(struct platform_device *pdev)
struct clk *pclk, *hclk, *tx_clk;
unsigned int queue_mask, num_queues;
struct macb_platform_data *pdata;
bool native_io;
struct phy_device *phydev;
struct net_device *dev;
struct resource *regs;
......@@ -2794,6 +2828,11 @@ static int macb_probe(struct platform_device *pdev)
struct macb *bp;
int err;
regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
mem = devm_ioremap_resource(&pdev->dev, regs);
if (IS_ERR(mem))
return PTR_ERR(mem);
if (np) {
const struct of_device_id *match;
......@@ -2809,14 +2848,9 @@ static int macb_probe(struct platform_device *pdev)
if (err)
return err;
regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
mem = devm_ioremap_resource(&pdev->dev, regs);
if (IS_ERR(mem)) {
err = PTR_ERR(mem);
goto err_disable_clocks;
}
native_io = hw_is_native_io(mem);
macb_probe_queues(mem, &queue_mask, &num_queues);
macb_probe_queues(mem, native_io, &queue_mask, &num_queues);
dev = alloc_etherdev_mq(sizeof(*bp), num_queues);
if (!dev) {
err = -ENOMEM;
......@@ -2831,6 +2865,14 @@ static int macb_probe(struct platform_device *pdev)
bp->pdev = pdev;
bp->dev = dev;
bp->regs = mem;
bp->native_io = native_io;
if (native_io) {
bp->readl = hw_readl_native;
bp->writel = hw_writel_native;
} else {
bp->readl = hw_readl;
bp->writel = hw_writel;
}
bp->num_queues = num_queues;
bp->queue_mask = queue_mask;
if (macb_config)
......@@ -2838,9 +2880,8 @@ static int macb_probe(struct platform_device *pdev)
bp->pclk = pclk;
bp->hclk = hclk;
bp->tx_clk = tx_clk;
if (macb_config->jumbo_max_len) {
if (macb_config)
bp->jumbo_max_len = macb_config->jumbo_max_len;
}
spin_lock_init(&bp->lock);
......
drivers/net/ethernet/cadence/macb.h
View file @ 54109da3
......@@ -429,18 +429,12 @@
| GEM_BF(name, value))
/* Register access macros */
#define macb_readl(port,reg) \
readl_relaxed((port)->regs + MACB_##reg)
#define macb_writel(port,reg,value) \
writel_relaxed((value), (port)->regs + MACB_##reg)
#define gem_readl(port, reg) \
readl_relaxed((port)->regs + GEM_##reg)
#define gem_writel(port, reg, value) \
writel_relaxed((value), (port)->regs + GEM_##reg)
#define queue_readl(queue, reg) \
readl_relaxed((queue)->bp->regs + (queue)->reg)
#define queue_writel(queue, reg, value) \
writel_relaxed((value), (queue)->bp->regs + (queue)->reg)
#define macb_readl(port, reg) (port)->readl((port), MACB_##reg)
#define macb_writel(port, reg, value) (port)->writel((port), MACB_##reg, (value))
#define gem_readl(port, reg) (port)->readl((port), GEM_##reg)
#define gem_writel(port, reg, value) (port)->writel((port), GEM_##reg, (value))
#define queue_readl(queue, reg) (queue)->bp->readl((queue)->bp, (queue)->reg)
#define queue_writel(queue, reg, value) (queue)->bp->writel((queue)->bp, (queue)->reg, (value))
/* Conditional GEM/MACB macros. These perform the operation to the correct
* register dependent on whether the device is a GEM or a MACB. For registers
......@@ -785,6 +779,11 @@ struct macb_queue {
struct macb {
void __iomem *regs;
bool native_io;
/* hardware IO accessors */
u32 (*readl)(struct macb *bp, int offset);
void (*writel)(struct macb *bp, int offset, u32 value);
unsigned int rx_tail;
unsigned int rx_prepared_head;
......@@ -817,9 +816,9 @@ struct macb {
struct mii_bus *mii_bus;
struct phy_device *phy_dev;
unsigned int link;
unsigned int speed;
unsigned int duplex;
int link;
int speed;
int duplex;
u32 caps;
unsigned int dma_burst_length;
......@@ -843,9 +842,4 @@ static inline bool macb_is_gem(struct macb *bp)
return !!(bp->caps & MACB_CAPS_MACB_IS_GEM);
}
static inline bool macb_is_gem_hw(void __iomem *addr)
{
return !!(MACB_BFEXT(IDNUM, readl_relaxed(addr + MACB_MID)) >= 0x2);
}
#endif /* _MACB_H */
include/linux/platform_data/macb.h
View file @ 54109da3
......@@ -8,11 +8,19 @@
#ifndef __MACB_PDATA_H__
#define __MACB_PDATA_H__
/**
* struct macb_platform_data - platform data for MACB Ethernet
* @phy_mask: phy mask passed when register the MDIO bus
* within the driver
* @phy_irq_pin: PHY IRQ
* @is_rmii: using RMII interface?
* @rev_eth_addr: reverse Ethernet address byte order
*/
struct macb_platform_data {
u32 phy_mask;
int phy_irq_pin; /* PHY IRQ */
u8 is_rmii; /* using RMII interface? */
u8 rev_eth_addr; /* reverse Ethernet address byte order */
int phy_irq_pin;
u8 is_rmii;
u8 rev_eth_addr;
};
#endif /* __MACB_PDATA_H__ */
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