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Message-Id: <1270808662-7115-4-git-send-email-peppe.cavallaro@st.com> Date: Fri, 9 Apr 2010 12:24:18 +0200 From: Giuseppe CAVALLARO <peppe.cavallaro@...com> To: netdev@...r.kernel.org Cc: Giuseppe Cavallaro <peppe.cavallaro@...com> Subject: [PATCH] stmmac: fix Transmit FIFO flush operation Fix the Transmit FIFO flush operation; it was disabled while reworking the descriptor structures. Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@...com> --- drivers/net/stmmac/common.h | 1 + drivers/net/stmmac/dwmac1000.h | 1 - drivers/net/stmmac/dwmac1000_dma.c | 9 --------- drivers/net/stmmac/dwmac_dma.h | 1 + drivers/net/stmmac/dwmac_lib.c | 7 +++++++ drivers/net/stmmac/enh_desc.c | 6 +++--- 6 files changed, 12 insertions(+), 13 deletions(-) diff --git a/drivers/net/stmmac/common.h b/drivers/net/stmmac/common.h index bd3b785..27a05b4 100644 --- a/drivers/net/stmmac/common.h +++ b/drivers/net/stmmac/common.h @@ -244,3 +244,4 @@ extern void stmmac_set_mac_addr(unsigned long ioaddr, u8 addr[6], unsigned int high, unsigned int low); extern void stmmac_get_mac_addr(unsigned long ioaddr, unsigned char *addr, unsigned int high, unsigned int low); +extern void dwmac_dma_flush_tx_fifo(unsigned long ioaddr); diff --git a/drivers/net/stmmac/dwmac1000.h b/drivers/net/stmmac/dwmac1000.h index 3b784fc..d8d0f35 100644 --- a/drivers/net/stmmac/dwmac1000.h +++ b/drivers/net/stmmac/dwmac1000.h @@ -172,7 +172,6 @@ enum rfd { deac_full_minus_4 = 0x00401800, }; #define DMA_CONTROL_TSF 0x00200000 /* Transmit Store and Forward */ -#define DMA_CONTROL_FTF 0x00100000 /* Flush transmit FIFO */ enum ttc_control { DMA_CONTROL_TTC_64 = 0x00000000, diff --git a/drivers/net/stmmac/dwmac1000_dma.c b/drivers/net/stmmac/dwmac1000_dma.c index 8d3ea99..a547aa9 100644 --- a/drivers/net/stmmac/dwmac1000_dma.c +++ b/drivers/net/stmmac/dwmac1000_dma.c @@ -58,15 +58,6 @@ static int dwmac1000_dma_init(unsigned long ioaddr, int pbl, u32 dma_tx, return 0; } -/* Transmit FIFO flush operation */ -static void dwmac1000_flush_tx_fifo(unsigned long ioaddr) -{ - u32 csr6 = readl(ioaddr + DMA_CONTROL); - writel((csr6 | DMA_CONTROL_FTF), ioaddr + DMA_CONTROL); - - do {} while ((readl(ioaddr + DMA_CONTROL) & DMA_CONTROL_FTF)); -} - static void dwmac1000_dma_operation_mode(unsigned long ioaddr, int txmode, int rxmode) { diff --git a/drivers/net/stmmac/dwmac_dma.h b/drivers/net/stmmac/dwmac_dma.h index de848d9..7b815a1 100644 --- a/drivers/net/stmmac/dwmac_dma.h +++ b/drivers/net/stmmac/dwmac_dma.h @@ -95,6 +95,7 @@ #define DMA_STATUS_TU 0x00000004 /* Transmit Buffer Unavailable */ #define DMA_STATUS_TPS 0x00000002 /* Transmit Process Stopped */ #define DMA_STATUS_TI 0x00000001 /* Transmit Interrupt */ +#define DMA_CONTROL_FTF 0x00100000 /* Flush transmit FIFO */ extern void dwmac_enable_dma_transmission(unsigned long ioaddr); extern void dwmac_enable_dma_irq(unsigned long ioaddr); diff --git a/drivers/net/stmmac/dwmac_lib.c b/drivers/net/stmmac/dwmac_lib.c index d4adb1e..0a504ad 100644 --- a/drivers/net/stmmac/dwmac_lib.c +++ b/drivers/net/stmmac/dwmac_lib.c @@ -227,6 +227,13 @@ int dwmac_dma_interrupt(unsigned long ioaddr, return ret; } +void dwmac_dma_flush_tx_fifo(unsigned long ioaddr) +{ + u32 csr6 = readl(ioaddr + DMA_CONTROL); + writel((csr6 | DMA_CONTROL_FTF), ioaddr + DMA_CONTROL); + + do {} while ((readl(ioaddr + DMA_CONTROL) & DMA_CONTROL_FTF)); +} void stmmac_set_mac_addr(unsigned long ioaddr, u8 addr[6], unsigned int high, unsigned int low) diff --git a/drivers/net/stmmac/enh_desc.c b/drivers/net/stmmac/enh_desc.c index e5ac259..eb5684a 100644 --- a/drivers/net/stmmac/enh_desc.c +++ b/drivers/net/stmmac/enh_desc.c @@ -40,7 +40,7 @@ static int enh_desc_get_tx_status(void *data, struct stmmac_extra_stats *x, if (unlikely(p->des01.etx.frame_flushed)) { CHIP_DBG(KERN_ERR "\tframe_flushed error\n"); x->tx_frame_flushed++; - /*enh_desc_flush_tx_fifo(ioaddr);*/ + dwmac_dma_flush_tx_fifo(ioaddr); } if (unlikely(p->des01.etx.loss_carrier)) { @@ -68,7 +68,7 @@ static int enh_desc_get_tx_status(void *data, struct stmmac_extra_stats *x, if (unlikely(p->des01.etx.underflow_error)) { CHIP_DBG(KERN_ERR "\tunderflow error\n"); - /*enh_desc_flush_tx_fifo(ioaddr);*/ + dwmac_dma_flush_tx_fifo(ioaddr); x->tx_underflow++; } @@ -80,7 +80,7 @@ static int enh_desc_get_tx_status(void *data, struct stmmac_extra_stats *x, if (unlikely(p->des01.etx.payload_error)) { CHIP_DBG(KERN_ERR "\tAddr/Payload csum error\n"); x->tx_payload_error++; - /*enh_desc_flush_tx_fifo(ioaddr);*/ + dwmac_dma_flush_tx_fifo(ioaddr); } ret = -1; -- 1.6.0.4 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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