cregit-Linux how code gets into the kernel

Release 4.11 drivers/net/ethernet/stmicro/stmmac/descs_com.h

/*******************************************************************************
  Header File to describe Normal/enhanced descriptor functions used for RING
  and CHAINED modes.

  Copyright(C) 2011  STMicroelectronics Ltd

  It defines all the functions used to handle the normal/enhanced
  descriptors in case of the DMA is configured to work in chained or
  in ring mode.

  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.

  The full GNU General Public License is included in this distribution in
  the file called "COPYING".

  Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
*******************************************************************************/

#ifndef __DESC_COM_H__

#define __DESC_COM_H__

/* Specific functions used for Ring mode */

/* Enhanced descriptors */

static inline void ehn_desc_rx_set_on_ring(struct dma_desc *p, int end) { p->des1 |= cpu_to_le32(((BUF_SIZE_8KiB - 1) << ERDES1_BUFFER2_SIZE_SHIFT) & ERDES1_BUFFER2_SIZE_MASK); if (end) p->des1 |= cpu_to_le32(ERDES1_END_RING); }

Contributors

PersonTokensPropCommitsCommitProp
Giuseppe Cavallaro4187.23%375.00%
Michael Weiser612.77%125.00%
Total47100.00%4100.00%


static inline void enh_desc_end_tx_desc_on_ring(struct dma_desc *p, int end) { if (end) p->des0 |= cpu_to_le32(ETDES0_END_RING); else p->des0 &= cpu_to_le32(~ETDES0_END_RING); }

Contributors

PersonTokensPropCommitsCommitProp
Giuseppe Cavallaro3384.62%266.67%
Michael Weiser615.38%133.33%
Total39100.00%3100.00%


static inline void enh_set_tx_desc_len_on_ring(struct dma_desc *p, int len) { if (unlikely(len > BUF_SIZE_4KiB)) { p->des1 |= cpu_to_le32((((len - BUF_SIZE_4KiB) << ETDES1_BUFFER2_SIZE_SHIFT) & ETDES1_BUFFER2_SIZE_MASK) | (BUF_SIZE_4KiB & ETDES1_BUFFER1_SIZE_MASK)); } else p->des1 |= cpu_to_le32((len & ETDES1_BUFFER1_SIZE_MASK)); }

Contributors

PersonTokensPropCommitsCommitProp
Giuseppe Cavallaro6191.04%375.00%
Michael Weiser68.96%125.00%
Total67100.00%4100.00%

/* Normal descriptors */
static inline void ndesc_rx_set_on_ring(struct dma_desc *p, int end) { p->des1 |= cpu_to_le32(((BUF_SIZE_2KiB - 1) << RDES1_BUFFER2_SIZE_SHIFT) & RDES1_BUFFER2_SIZE_MASK); if (end) p->des1 |= cpu_to_le32(RDES1_END_RING); }

Contributors

PersonTokensPropCommitsCommitProp
Giuseppe Cavallaro4187.23%375.00%
Michael Weiser612.77%125.00%
Total47100.00%4100.00%


static inline void ndesc_end_tx_desc_on_ring(struct dma_desc *p, int end) { if (end) p->des1 |= cpu_to_le32(TDES1_END_RING); else p->des1 &= cpu_to_le32(~TDES1_END_RING); }

Contributors

PersonTokensPropCommitsCommitProp
Giuseppe Cavallaro3384.62%266.67%
Michael Weiser615.38%133.33%
Total39100.00%3100.00%


static inline void norm_set_tx_desc_len_on_ring(struct dma_desc *p, int len) { if (unlikely(len > BUF_SIZE_2KiB)) { unsigned int buffer1 = (BUF_SIZE_2KiB - 1) & TDES1_BUFFER1_SIZE_MASK; p->des1 |= cpu_to_le32((((len - buffer1) << TDES1_BUFFER2_SIZE_SHIFT) & TDES1_BUFFER2_SIZE_MASK) | buffer1); } else p->des1 |= cpu_to_le32((len & TDES1_BUFFER1_SIZE_MASK)); }

Contributors

PersonTokensPropCommitsCommitProp
Giuseppe Cavallaro6992.00%375.00%
Michael Weiser68.00%125.00%
Total75100.00%4100.00%

/* Specific functions used for Chain mode */ /* Enhanced descriptors */
static inline void ehn_desc_rx_set_on_chain(struct dma_desc *p) { p->des1 |= cpu_to_le32(ERDES1_SECOND_ADDRESS_CHAINED); }

Contributors

PersonTokensPropCommitsCommitProp
Giuseppe Cavallaro1885.71%375.00%
Michael Weiser314.29%125.00%
Total21100.00%4100.00%


static inline void enh_desc_end_tx_desc_on_chain(struct dma_desc *p) { p->des0 |= cpu_to_le32(ETDES0_SECOND_ADDRESS_CHAINED); }

Contributors

PersonTokensPropCommitsCommitProp
Giuseppe Cavallaro1885.71%375.00%
Michael Weiser314.29%125.00%
Total21100.00%4100.00%


static inline void enh_set_tx_desc_len_on_chain(struct dma_desc *p, int len) { p->des1 |= cpu_to_le32(len & ETDES1_BUFFER1_SIZE_MASK); }

Contributors

PersonTokensPropCommitsCommitProp
Giuseppe Cavallaro2388.46%375.00%
Michael Weiser311.54%125.00%
Total26100.00%4100.00%

/* Normal descriptors */
static inline void ndesc_rx_set_on_chain(struct dma_desc *p, int end) { p->des1 |= cpu_to_le32(RDES1_SECOND_ADDRESS_CHAINED); }

Contributors

PersonTokensPropCommitsCommitProp
Giuseppe Cavallaro2187.50%375.00%
Michael Weiser312.50%125.00%
Total24100.00%4100.00%


static inline void ndesc_tx_set_on_chain(struct dma_desc *p) { p->des1 |= cpu_to_le32(TDES1_SECOND_ADDRESS_CHAINED); }

Contributors

PersonTokensPropCommitsCommitProp
Giuseppe Cavallaro1885.71%375.00%
Michael Weiser314.29%125.00%
Total21100.00%4100.00%


static inline void norm_set_tx_desc_len_on_chain(struct dma_desc *p, int len) { p->des1 |= cpu_to_le32(len & TDES1_BUFFER1_SIZE_MASK); }

Contributors

PersonTokensPropCommitsCommitProp
Giuseppe Cavallaro2388.46%375.00%
Michael Weiser311.54%125.00%
Total26100.00%4100.00%

#endif /* __DESC_COM_H__ */

Overall Contributors

PersonTokensPropCommitsCommitProp
Giuseppe Cavallaro40786.78%350.00%
Michael Weiser5411.51%116.67%
Rayagond Kokatanur71.49%116.67%
Corentin Labbe10.21%116.67%
Total469100.00%6100.00%
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.