diff options
Diffstat (limited to 'drivers/net/stmmac/norm_desc.c')
| -rw-r--r-- | drivers/net/stmmac/norm_desc.c | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/drivers/net/stmmac/norm_desc.c b/drivers/net/stmmac/norm_desc.c deleted file mode 100644 index 029c2a2cf52..00000000000 --- a/drivers/net/stmmac/norm_desc.c +++ /dev/null @@ -1,221 +0,0 @@ -/******************************************************************************* - This contains the functions to handle the normal descriptors. - - Copyright (C) 2007-2009 STMicroelectronics Ltd - - This program is free software; you can redistribute it and/or modify it - under the terms and conditions of the GNU General Public License, - version 2, as published by the Free Software Foundation. - - This program is distributed in the hope it will be useful, but WITHOUT - ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - more details. - - You should have received a copy of the GNU General Public License along with - this program; if not, write to the Free Software Foundation, Inc., - 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - - The full GNU General Public License is included in this distribution in - the file called "COPYING". - - Author: Giuseppe Cavallaro <peppe.cavallaro@st.com> -*******************************************************************************/ - -#include "common.h" - -static int ndesc_get_tx_status(void *data, struct stmmac_extra_stats *x, - struct dma_desc *p, void __iomem *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 ndesc_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 because the device - * is not able to compute the csum in HW. */ -static int ndesc_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("ndesc 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 ndesc_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++; - } -} - -static void ndesc_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++; - } -} - -static int ndesc_get_tx_owner(struct dma_desc *p) -{ - return p->des01.tx.own; -} - -static int ndesc_get_rx_owner(struct dma_desc *p) -{ - return p->des01.rx.own; -} - -static void ndesc_set_tx_owner(struct dma_desc *p) -{ - p->des01.tx.own = 1; -} - -static void ndesc_set_rx_owner(struct dma_desc *p) -{ - p->des01.rx.own = 1; -} - -static int ndesc_get_tx_ls(struct dma_desc *p) -{ - return p->des01.tx.last_segment; -} - -static void ndesc_release_tx_desc(struct dma_desc *p) -{ - int ter = p->des01.tx.end_ring; - - memset(p, 0, offsetof(struct dma_desc, des2)); - /* set termination field */ - p->des01.tx.end_ring = ter; -} - -static void ndesc_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 ndesc_clear_tx_ic(struct dma_desc *p) -{ - p->des01.tx.interrupt = 0; -} - -static void ndesc_close_tx_desc(struct dma_desc *p) -{ - p->des01.tx.last_segment = 1; - p->des01.tx.interrupt = 1; -} - -static int ndesc_get_rx_frame_len(struct dma_desc *p) -{ - return p->des01.rx.frame_length; -} - -const struct stmmac_desc_ops ndesc_ops = { - .tx_status = ndesc_get_tx_status, - .rx_status = ndesc_get_rx_status, - .get_tx_len = ndesc_get_tx_len, - .init_rx_desc = ndesc_init_rx_desc, - .init_tx_desc = ndesc_init_tx_desc, - .get_tx_owner = ndesc_get_tx_owner, - .get_rx_owner = ndesc_get_rx_owner, - .release_tx_desc = ndesc_release_tx_desc, - .prepare_tx_desc = ndesc_prepare_tx_desc, - .clear_tx_ic = ndesc_clear_tx_ic, - .close_tx_desc = ndesc_close_tx_desc, - .get_tx_ls = ndesc_get_tx_ls, - .set_tx_owner = ndesc_set_tx_owner, - .set_rx_owner = ndesc_set_rx_owner, - .get_rx_frame_len = ndesc_get_rx_frame_len, -}; 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