diff options
Diffstat (limited to 'drivers/net/stmmac/dwmac1000_dma.c')
| -rw-r--r-- | drivers/net/stmmac/dwmac1000_dma.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/drivers/net/stmmac/dwmac1000_dma.c b/drivers/net/stmmac/dwmac1000_dma.c index 415805057cb..2c47712d45d 100644 --- a/drivers/net/stmmac/dwmac1000_dma.c +++ b/drivers/net/stmmac/dwmac1000_dma.c @@ -29,14 +29,22 @@ #include "dwmac1000.h" #include "dwmac_dma.h" -static int dwmac1000_dma_init(unsigned long ioaddr, int pbl, u32 dma_tx, +static int dwmac1000_dma_init(void __iomem *ioaddr, int pbl, u32 dma_tx, u32 dma_rx) { u32 value = readl(ioaddr + DMA_BUS_MODE); + int limit; + /* DMA SW reset */ value |= DMA_BUS_MODE_SFT_RESET; writel(value, ioaddr + DMA_BUS_MODE); - do {} while ((readl(ioaddr + DMA_BUS_MODE) & DMA_BUS_MODE_SFT_RESET)); + limit = 15000; + while (limit--) { + if (!(readl(ioaddr + DMA_BUS_MODE) & DMA_BUS_MODE_SFT_RESET)) + break; + } + if (limit < 0) + return -EBUSY; value = /* DMA_BUS_MODE_FB | */ DMA_BUS_MODE_4PBL | ((pbl << DMA_BUS_MODE_PBL_SHIFT) | @@ -58,7 +66,7 @@ static int dwmac1000_dma_init(unsigned long ioaddr, int pbl, u32 dma_tx, return 0; } -static void dwmac1000_dma_operation_mode(unsigned long ioaddr, int txmode, +static void dwmac1000_dma_operation_mode(void __iomem *ioaddr, int txmode, int rxmode) { u32 csr6 = readl(ioaddr + DMA_CONTROL); @@ -111,12 +119,12 @@ static void dwmac1000_dma_operation_mode(unsigned long ioaddr, int txmode, /* Not yet implemented --- no RMON module */ static void dwmac1000_dma_diagnostic_fr(void *data, - struct stmmac_extra_stats *x, unsigned long ioaddr) + struct stmmac_extra_stats *x, void __iomem *ioaddr) { return; } -static void dwmac1000_dump_dma_regs(unsigned long ioaddr) +static void dwmac1000_dump_dma_regs(void __iomem *ioaddr) { int i; pr_info(" DMA registers\n"); @@ -130,7 +138,7 @@ static void dwmac1000_dump_dma_regs(unsigned long ioaddr) } } -struct stmmac_dma_ops dwmac1000_dma_ops = { +const struct stmmac_dma_ops dwmac1000_dma_ops = { .init = dwmac1000_dma_init, .dump_regs = dwmac1000_dump_dma_regs, .dma_mode = dwmac1000_dma_operation_mode, |