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);
}

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Giuseppe Cavallaro
41
87.23%
3
75.00%
Michael Weiser
6
12.77%
1
25.00%
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47
100.00%
4
100.00%



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
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Giuseppe Cavallaro
33
84.62%
2
66.67%
Michael Weiser
6
15.38%
1
33.33%
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39
100.00%
3
100.00%



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
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CommitProp
Giuseppe Cavallaro
61
91.04%
3
75.00%
Michael Weiser
6
8.96%
1
25.00%
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67
100.00%
4
100.00%

/* 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
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CommitProp
Giuseppe Cavallaro
41
87.23%
3
75.00%
Michael Weiser
6
12.77%
1
25.00%
Total
47
100.00%
4
100.00%



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
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CommitProp
Giuseppe Cavallaro
33
84.62%
2
66.67%
Michael Weiser
6
15.38%
1
33.33%
Total
39
100.00%
3
100.00%



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
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Giuseppe Cavallaro
69
92.00%
3
75.00%
Michael Weiser
6
8.00%
1
25.00%
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75
100.00%
4
100.00%

/* 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
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Giuseppe Cavallaro
18
85.71%
3
75.00%
Michael Weiser
3
14.29%
1
25.00%
Total
21
100.00%
4
100.00%



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

Contributors
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CommitProp
Giuseppe Cavallaro
18
85.71%
3
75.00%
Michael Weiser
3
14.29%
1
25.00%
Total
21
100.00%
4
100.00%



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
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CommitProp
Giuseppe Cavallaro
23
88.46%
3
75.00%
Michael Weiser
3
11.54%
1
25.00%
Total
26
100.00%
4
100.00%

/* 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
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CommitProp
Giuseppe Cavallaro
21
87.50%
3
75.00%
Michael Weiser
3
12.50%
1
25.00%
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24
100.00%
4
100.00%



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

Contributors
Person
Tokens
Prop
Commits
CommitProp
Giuseppe Cavallaro
18
85.71%
3
75.00%
Michael Weiser
3
14.29%
1
25.00%
Total
21
100.00%
4
100.00%



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
Person
Tokens
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Commits
CommitProp
Giuseppe Cavallaro
23
88.46%
3
75.00%
Michael Weiser
3
11.54%
1
25.00%
Total
26
100.00%
4
100.00%

#endif /* __DESC_COM_H__ */
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Giuseppe Cavallaro
407
86.78%
3
50.00%
Michael Weiser
54
11.51%
1
16.67%
Rayagond Kokatanur
7
1.49%
1
16.67%
Corentin Labbe
1
0.21%
1
16.67%
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6
100.00%
Directory: drivers/net/ethernet/stmicro/stmmac

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