diff options
Diffstat (limited to 'drivers/net/stmmac/dwmac100_dma.c')
-rw-r--r-- | drivers/net/stmmac/dwmac100_dma.c | 223 |
1 files changed, 4 insertions, 219 deletions
diff --git a/drivers/net/stmmac/dwmac100_dma.c b/drivers/net/stmmac/dwmac100_dma.c index 7fcc52650505..96d098d68ad6 100644 --- a/drivers/net/stmmac/dwmac100_dma.c +++ b/drivers/net/stmmac/dwmac100_dma.c @@ -5,7 +5,7 @@ DWC Ether MAC 10/100 Universal version 4.0 has been used for developing this code. - This contains the functions to handle the dma and descriptors. + This contains the functions to handle the dma. Copyright (C) 2007-2009 STMicroelectronics Ltd @@ -79,14 +79,14 @@ static void dwmac100_dump_dma_regs(unsigned long ioaddr) { int i; - DBG(KERN_DEBUG "DWMAC 100 DMA CSR\n"); + CHIP_DBG(KERN_DEBUG "DWMAC 100 DMA CSR\n"); for (i = 0; i < 9; i++) pr_debug("\t CSR%d (offset 0x%x): 0x%08x\n", i, (DMA_BUS_MODE + i * 4), readl(ioaddr + DMA_BUS_MODE + i * 4)); - DBG(KERN_DEBUG "\t CSR20 (offset 0x%x): 0x%08x\n", + CHIP_DBG(KERN_DEBUG "\t CSR20 (offset 0x%x): 0x%08x\n", DMA_CUR_TX_BUF_ADDR, readl(ioaddr + DMA_CUR_TX_BUF_ADDR)); - DBG(KERN_DEBUG "\t CSR21 (offset 0x%x): 0x%08x\n", + CHIP_DBG(KERN_DEBUG "\t CSR21 (offset 0x%x): 0x%08x\n", DMA_CUR_RX_BUF_ADDR, readl(ioaddr + DMA_CUR_RX_BUF_ADDR)); return; } @@ -122,203 +122,6 @@ static void dwmac100_dma_diagnostic_fr(void *data, struct stmmac_extra_stats *x, return; } -static int dwmac100_get_tx_status(void *data, struct stmmac_extra_stats *x, - struct dma_desc *p, unsigned long ioaddr) -{ - int ret = 0; - struct net_device_stats *stats = (struct net_device_stats *)data; - - if (unlikely(p->des01.tx.error_summary)) { - if (unlikely(p->des01.tx.underflow_error)) { - x->tx_underflow++; - stats->tx_fifo_errors++; - } - if (unlikely(p->des01.tx.no_carrier)) { - x->tx_carrier++; - stats->tx_carrier_errors++; - } - if (unlikely(p->des01.tx.loss_carrier)) { - x->tx_losscarrier++; - stats->tx_carrier_errors++; - } - if (unlikely((p->des01.tx.excessive_deferral) || - (p->des01.tx.excessive_collisions) || - (p->des01.tx.late_collision))) - stats->collisions += p->des01.tx.collision_count; - ret = -1; - } - if (unlikely(p->des01.tx.heartbeat_fail)) { - x->tx_heartbeat++; - stats->tx_heartbeat_errors++; - ret = -1; - } - if (unlikely(p->des01.tx.deferred)) - x->tx_deferred++; - - return ret; -} - -static int dwmac100_get_tx_len(struct dma_desc *p) -{ - return p->des01.tx.buffer1_size; -} - -/* This function verifies if each incoming frame has some errors - * and, if required, updates the multicast statistics. - * In case of success, it returns csum_none becasue the device - * is not able to compute the csum in HW. */ -static int dwmac100_get_rx_status(void *data, struct stmmac_extra_stats *x, - struct dma_desc *p) -{ - int ret = csum_none; - struct net_device_stats *stats = (struct net_device_stats *)data; - - if (unlikely(p->des01.rx.last_descriptor == 0)) { - pr_warning("dwmac100 Error: Oversized Ethernet " - "frame spanned multiple buffers\n"); - stats->rx_length_errors++; - return discard_frame; - } - - if (unlikely(p->des01.rx.error_summary)) { - if (unlikely(p->des01.rx.descriptor_error)) - x->rx_desc++; - if (unlikely(p->des01.rx.partial_frame_error)) - x->rx_partial++; - if (unlikely(p->des01.rx.run_frame)) - x->rx_runt++; - if (unlikely(p->des01.rx.frame_too_long)) - x->rx_toolong++; - if (unlikely(p->des01.rx.collision)) { - x->rx_collision++; - stats->collisions++; - } - if (unlikely(p->des01.rx.crc_error)) { - x->rx_crc++; - stats->rx_crc_errors++; - } - ret = discard_frame; - } - if (unlikely(p->des01.rx.dribbling)) - ret = discard_frame; - - if (unlikely(p->des01.rx.length_error)) { - x->rx_length++; - ret = discard_frame; - } - if (unlikely(p->des01.rx.mii_error)) { - x->rx_mii++; - ret = discard_frame; - } - if (p->des01.rx.multicast_frame) { - x->rx_multicast++; - stats->multicast++; - } - return ret; -} - -static void dwmac100_init_rx_desc(struct dma_desc *p, unsigned int ring_size, - int disable_rx_ic) -{ - int i; - for (i = 0; i < ring_size; i++) { - p->des01.rx.own = 1; - p->des01.rx.buffer1_size = BUF_SIZE_2KiB - 1; - if (i == ring_size - 1) - p->des01.rx.end_ring = 1; - if (disable_rx_ic) - p->des01.rx.disable_ic = 1; - p++; - } - return; -} - -static void dwmac100_init_tx_desc(struct dma_desc *p, unsigned int ring_size) -{ - int i; - for (i = 0; i < ring_size; i++) { - p->des01.tx.own = 0; - if (i == ring_size - 1) - p->des01.tx.end_ring = 1; - p++; - } - return; -} - -static int dwmac100_get_tx_owner(struct dma_desc *p) -{ - return p->des01.tx.own; -} - -static int dwmac100_get_rx_owner(struct dma_desc *p) -{ - return p->des01.rx.own; -} - -static void dwmac100_set_tx_owner(struct dma_desc *p) -{ - p->des01.tx.own = 1; -} - -static void dwmac100_set_rx_owner(struct dma_desc *p) -{ - p->des01.rx.own = 1; -} - -static int dwmac100_get_tx_ls(struct dma_desc *p) -{ - return p->des01.tx.last_segment; -} - -static void dwmac100_release_tx_desc(struct dma_desc *p) -{ - int ter = p->des01.tx.end_ring; - - /* clean field used within the xmit */ - p->des01.tx.first_segment = 0; - p->des01.tx.last_segment = 0; - p->des01.tx.buffer1_size = 0; - - /* clean status reported */ - p->des01.tx.error_summary = 0; - p->des01.tx.underflow_error = 0; - p->des01.tx.no_carrier = 0; - p->des01.tx.loss_carrier = 0; - p->des01.tx.excessive_deferral = 0; - p->des01.tx.excessive_collisions = 0; - p->des01.tx.late_collision = 0; - p->des01.tx.heartbeat_fail = 0; - p->des01.tx.deferred = 0; - - /* set termination field */ - p->des01.tx.end_ring = ter; - - return; -} - -static void dwmac100_prepare_tx_desc(struct dma_desc *p, int is_fs, int len, - int csum_flag) -{ - p->des01.tx.first_segment = is_fs; - p->des01.tx.buffer1_size = len; -} - -static void dwmac100_clear_tx_ic(struct dma_desc *p) -{ - p->des01.tx.interrupt = 0; -} - -static void dwmac100_close_tx_desc(struct dma_desc *p) -{ - p->des01.tx.last_segment = 1; - p->des01.tx.interrupt = 1; -} - -static int dwmac100_get_rx_frame_len(struct dma_desc *p) -{ - return p->des01.rx.frame_length; -} - struct stmmac_dma_ops dwmac100_dma_ops = { .init = dwmac100_dma_init, .dump_regs = dwmac100_dump_dma_regs, @@ -333,21 +136,3 @@ struct stmmac_dma_ops dwmac100_dma_ops = { .stop_rx = dwmac_dma_stop_rx, .dma_interrupt = dwmac_dma_interrupt, }; - -struct stmmac_desc_ops dwmac100_desc_ops = { - .tx_status = dwmac100_get_tx_status, - .rx_status = dwmac100_get_rx_status, - .get_tx_len = dwmac100_get_tx_len, - .init_rx_desc = dwmac100_init_rx_desc, - .init_tx_desc = dwmac100_init_tx_desc, - .get_tx_owner = dwmac100_get_tx_owner, - .get_rx_owner = dwmac100_get_rx_owner, - .release_tx_desc = dwmac100_release_tx_desc, - .prepare_tx_desc = dwmac100_prepare_tx_desc, - .clear_tx_ic = dwmac100_clear_tx_ic, - .close_tx_desc = dwmac100_close_tx_desc, - .get_tx_ls = dwmac100_get_tx_ls, - .set_tx_owner = dwmac100_set_tx_owner, - .set_rx_owner = dwmac100_set_rx_owner, - .get_rx_frame_len = dwmac100_get_rx_frame_len, -}; 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