diff options
| author | Arun Chandran <achandran@mvista.com> | 2015-02-18 16:59:35 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-02-20 15:51:31 -0500 |
| commit | a50dad355a5314da64586da36804b86fbebb7c2a (patch) | |
| tree | e0b41be8f30ee85291d349454b32989bc7602e06 /drivers/net/ethernet | |
| parent | 931c471af51565a6290d9fabbe14ed7c8fa4a317 (diff) | |
net: macb: Add big endian CPU support
This patch converts all __raw_readl and __raw_writel function calls
to their corresponding readl_relaxed and writel_relaxed variants.
It also tells the driver to set ahb_endian_swp_mgmt_en bit in dma_cfg
when the CPU is configured in big endian mode.
Signed-off-by: Arun Chandran <achandran@mvista.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/cadence/macb.c | 18 | ||||
| -rw-r--r-- | drivers/net/ethernet/cadence/macb.h | 15 |
2 files changed, 20 insertions, 13 deletions
diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c index ad76b8e35a00..05fb36da0cff 100644 --- a/drivers/net/ethernet/cadence/macb.c +++ b/drivers/net/ethernet/cadence/macb.c @@ -449,7 +449,7 @@ static void macb_update_stats(struct macb *bp) WARN_ON((unsigned long)(end - p - 1) != (MACB_TPF - MACB_PFR) / 4); for(; p < end; p++, reg++) - *p += __raw_readl(reg); + *p += readl_relaxed(reg); } static int macb_halt_tx(struct macb *bp) @@ -1585,7 +1585,11 @@ static void macb_configure_dma(struct macb *bp) if (bp->dma_burst_length) dmacfg = GEM_BFINS(FBLDO, bp->dma_burst_length, dmacfg); dmacfg |= GEM_BIT(TXPBMS) | GEM_BF(RXBMS, -1L); - dmacfg &= ~GEM_BIT(ENDIA); + dmacfg &= ~GEM_BIT(ENDIA_PKT); + /* Tell the chip to byteswap descriptors on big-endian hosts */ +#ifdef __BIG_ENDIAN + dmacfg |= GEM_BIT(ENDIA_DESC); +#endif if (bp->dev->features & NETIF_F_HW_CSUM) dmacfg |= GEM_BIT(TXCOEN); else @@ -1832,14 +1836,14 @@ static void gem_update_stats(struct macb *bp) for (i = 0; i < GEM_STATS_LEN; ++i, ++p) { u32 offset = gem_statistics[i].offset; - u64 val = __raw_readl(bp->regs + offset); + u64 val = readl_relaxed(bp->regs + offset); bp->ethtool_stats[i] += val; *p += val; if (offset == GEM_OCTTXL || offset == GEM_OCTRXL) { /* Add GEM_OCTTXH, GEM_OCTRXH */ - val = __raw_readl(bp->regs + offset + 4); + val = readl_relaxed(bp->regs + offset + 4); bp->ethtool_stats[i] += ((u64)val) << 32; *(++p) += val; } @@ -2191,12 +2195,14 @@ static void macb_probe_queues(void __iomem *mem, *num_queues = 1; /* is it macb or gem ? */ - mid = __raw_readl(mem + MACB_MID); + mid = readl_relaxed(mem + MACB_MID); + if (MACB_BFEXT(IDNUM, mid) != 0x2) return; /* bit 0 is never set but queue 0 always exists */ - *queue_mask = __raw_readl(mem + GEM_DCFG6) & 0xff; + *queue_mask = readl_relaxed(mem + GEM_DCFG6) & 0xff; + *queue_mask |= 0x1; for (hw_q = 1; hw_q < MACB_MAX_QUEUES; ++hw_q) diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h index 31dc080f2437..57f0a1a7415d 100644 --- a/drivers/net/ethernet/cadence/macb.h +++ b/drivers/net/ethernet/cadence/macb.h @@ -229,7 +229,8 @@ /* Bitfields in DMACFG. */ #define GEM_FBLDO_OFFSET 0 /* fixed burst length for DMA */ #define GEM_FBLDO_SIZE 5 -#define GEM_ENDIA_OFFSET 7 /* endian swap mode for packet data access */ +#define GEM_ENDIA_DESC_OFFSET 6 /* endian swap mode for management descriptor access */ +#define GEM_ENDIA_PKT_OFFSET 7 /* endian swap mode for packet data access */ #define GEM_ENDIA_SIZE 1 #define GEM_RXBMS_OFFSET 8 /* RX packet buffer memory size select */ #define GEM_RXBMS_SIZE 2 @@ -423,17 +424,17 @@ /* Register access macros */ #define macb_readl(port,reg) \ - __raw_readl((port)->regs + MACB_##reg) + readl_relaxed((port)->regs + MACB_##reg) #define macb_writel(port,reg,value) \ - __raw_writel((value), (port)->regs + MACB_##reg) + writel_relaxed((value), (port)->regs + MACB_##reg) #define gem_readl(port, reg) \ - __raw_readl((port)->regs + GEM_##reg) + readl_relaxed((port)->regs + GEM_##reg) #define gem_writel(port, reg, value) \ - __raw_writel((value), (port)->regs + GEM_##reg) + writel_relaxed((value), (port)->regs + GEM_##reg) #define queue_readl(queue, reg) \ - __raw_readl((queue)->bp->regs + (queue)->reg) + readl_relaxed((queue)->bp->regs + (queue)->reg) #define queue_writel(queue, reg, value) \ - __raw_writel((value), (queue)->bp->regs + (queue)->reg) + writel_relaxed((value), (queue)->bp->regs + (queue)->reg) /* 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 |