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1/* drivers/atm/zatm.h - ZeitNet ZN122x device driver declarations */
2
3/* Written 1995-1998 by Werner Almesberger, EPFL LRC/ICA */
4
5
6#ifndef DRIVER_ATM_ZATM_H
7#define DRIVER_ATM_ZATM_H
8
9#include <linux/skbuff.h>
10#include <linux/atm.h>
11#include <linux/atmdev.h>
12#include <linux/sonet.h>
13#include <linux/pci.h>
14
15
16#define DEV_LABEL "zatm"
17
18#define MAX_AAL5_PDU 10240 /* allocate for AAL5 PDUs of this size */
19#define MAX_RX_SIZE_LD 14 /* ceil(log2((MAX_AAL5_PDU+47)/48)) */
20
21#define LOW_MARK 12 /* start adding new buffers if less than 12 */
22#define HIGH_MARK 30 /* stop adding buffers after reaching 30 */
23#define OFF_CNG_THRES 5 /* threshold for offset changes */
24
25#define RX_SIZE 2 /* RX lookup entry size (in bytes) */
26#define NR_POOLS 32 /* number of free buffer pointers */
27#define POOL_SIZE 8 /* buffer entry size (in bytes) */
28#define NR_SHAPERS 16 /* number of shapers */
29#define SHAPER_SIZE 4 /* shaper entry size (in bytes) */
30#define VC_SIZE 32 /* VC dsc (TX or RX) size (in bytes) */
31
32#define RING_ENTRIES 32 /* ring entries (without back pointer) */
33#define RING_WORDS 4 /* ring element size */
34#define RING_SIZE (sizeof(unsigned long)*(RING_ENTRIES+1)*RING_WORDS)
35
36#define NR_MBX 4 /* four mailboxes */
37#define MBX_RX_0 0 /* mailbox indices */
38#define MBX_RX_1 1
39#define MBX_TX_0 2
40#define MBX_TX_1 3
41
42struct zatm_vcc {
43 /*-------------------------------- RX part */
44 int rx_chan; /* RX channel, 0 if none */
45 int pool; /* free buffer pool */
46 /*-------------------------------- TX part */
47 int tx_chan; /* TX channel, 0 if none */
48 int shaper; /* shaper, <0 if none */
49 struct sk_buff_head tx_queue; /* list of buffers in transit */
50 wait_queue_head_t tx_wait; /* for close */
51 u32 *ring; /* transmit ring */
52 int ring_curr; /* current write position */
53 int txing; /* number of transmits in progress */
54 struct sk_buff_head backlog; /* list of buffers waiting for ring */
55};
56
57struct zatm_dev {
58 /*-------------------------------- TX part */
59 int tx_bw; /* remaining bandwidth */
60 u32 free_shapers; /* bit set */
61 int ubr; /* UBR shaper; -1 if none */
62 int ubr_ref_cnt; /* number of VCs using UBR shaper */
63 /*-------------------------------- RX part */
64 int pool_ref[NR_POOLS]; /* free buffer pool usage counters */
65 volatile struct sk_buff *last_free[NR_POOLS];
66 /* last entry in respective pool */
67 struct sk_buff_head pool[NR_POOLS];/* free buffer pools */
68 struct zatm_pool_info pool_info[NR_POOLS]; /* pool information */
69 /*-------------------------------- maps */
70 struct atm_vcc **tx_map; /* TX VCCs */
71 struct atm_vcc **rx_map; /* RX VCCs */
72 int chans; /* map size, must be 2^n */
73 /*-------------------------------- mailboxes */
74 unsigned long mbx_start[NR_MBX];/* start addresses */
75 dma_addr_t mbx_dma[NR_MBX];
76 u16 mbx_end[NR_MBX]; /* end offset (in bytes) */
77 /*-------------------------------- other pointers */
78 u32 pool_base; /* Free buffer pool dsc (word addr) */
79 /*-------------------------------- ZATM links */
80 struct atm_dev *more; /* other ZATM devices */
81 /*-------------------------------- general information */
82 int mem; /* RAM on board (in bytes) */
83 int khz; /* timer clock */
84 int copper; /* PHY type */
85 unsigned char irq; /* IRQ */
86 unsigned int base; /* IO base address */
87 struct pci_dev *pci_dev; /* PCI stuff */
88 spinlock_t lock;
89};
90
91
92#define ZATM_DEV(d) ((struct zatm_dev *) (d)->dev_data)
93#define ZATM_VCC(d) ((struct zatm_vcc *) (d)->dev_data)
94
95
96struct zatm_skb_prv {
97 struct atm_skb_data _; /* reserved */
98 u32 *dsc; /* pointer to skb's descriptor */
99};
100
101#define ZATM_PRV_DSC(skb) (((struct zatm_skb_prv *) (skb)->cb)->dsc)
102
103#endif
1/* SPDX-License-Identifier: GPL-2.0 */
2/* drivers/atm/zatm.h - ZeitNet ZN122x device driver declarations */
3
4/* Written 1995-1998 by Werner Almesberger, EPFL LRC/ICA */
5
6
7#ifndef DRIVER_ATM_ZATM_H
8#define DRIVER_ATM_ZATM_H
9
10#include <linux/skbuff.h>
11#include <linux/atm.h>
12#include <linux/atmdev.h>
13#include <linux/sonet.h>
14#include <linux/pci.h>
15
16
17#define DEV_LABEL "zatm"
18
19#define MAX_AAL5_PDU 10240 /* allocate for AAL5 PDUs of this size */
20#define MAX_RX_SIZE_LD 14 /* ceil(log2((MAX_AAL5_PDU+47)/48)) */
21
22#define LOW_MARK 12 /* start adding new buffers if less than 12 */
23#define HIGH_MARK 30 /* stop adding buffers after reaching 30 */
24#define OFF_CNG_THRES 5 /* threshold for offset changes */
25
26#define RX_SIZE 2 /* RX lookup entry size (in bytes) */
27#define NR_POOLS 32 /* number of free buffer pointers */
28#define POOL_SIZE 8 /* buffer entry size (in bytes) */
29#define NR_SHAPERS 16 /* number of shapers */
30#define SHAPER_SIZE 4 /* shaper entry size (in bytes) */
31#define VC_SIZE 32 /* VC dsc (TX or RX) size (in bytes) */
32
33#define RING_ENTRIES 32 /* ring entries (without back pointer) */
34#define RING_WORDS 4 /* ring element size */
35#define RING_SIZE (sizeof(unsigned long)*(RING_ENTRIES+1)*RING_WORDS)
36
37#define NR_MBX 4 /* four mailboxes */
38#define MBX_RX_0 0 /* mailbox indices */
39#define MBX_RX_1 1
40#define MBX_TX_0 2
41#define MBX_TX_1 3
42
43struct zatm_vcc {
44 /*-------------------------------- RX part */
45 int rx_chan; /* RX channel, 0 if none */
46 int pool; /* free buffer pool */
47 /*-------------------------------- TX part */
48 int tx_chan; /* TX channel, 0 if none */
49 int shaper; /* shaper, <0 if none */
50 struct sk_buff_head tx_queue; /* list of buffers in transit */
51 wait_queue_head_t tx_wait; /* for close */
52 u32 *ring; /* transmit ring */
53 int ring_curr; /* current write position */
54 int txing; /* number of transmits in progress */
55 struct sk_buff_head backlog; /* list of buffers waiting for ring */
56};
57
58struct zatm_dev {
59 /*-------------------------------- TX part */
60 int tx_bw; /* remaining bandwidth */
61 u32 free_shapers; /* bit set */
62 int ubr; /* UBR shaper; -1 if none */
63 int ubr_ref_cnt; /* number of VCs using UBR shaper */
64 /*-------------------------------- RX part */
65 int pool_ref[NR_POOLS]; /* free buffer pool usage counters */
66 volatile struct sk_buff *last_free[NR_POOLS];
67 /* last entry in respective pool */
68 struct sk_buff_head pool[NR_POOLS];/* free buffer pools */
69 struct zatm_pool_info pool_info[NR_POOLS]; /* pool information */
70 /*-------------------------------- maps */
71 struct atm_vcc **tx_map; /* TX VCCs */
72 struct atm_vcc **rx_map; /* RX VCCs */
73 int chans; /* map size, must be 2^n */
74 /*-------------------------------- mailboxes */
75 unsigned long mbx_start[NR_MBX];/* start addresses */
76 dma_addr_t mbx_dma[NR_MBX];
77 u16 mbx_end[NR_MBX]; /* end offset (in bytes) */
78 /*-------------------------------- other pointers */
79 u32 pool_base; /* Free buffer pool dsc (word addr) */
80 /*-------------------------------- ZATM links */
81 struct atm_dev *more; /* other ZATM devices */
82 /*-------------------------------- general information */
83 int mem; /* RAM on board (in bytes) */
84 int khz; /* timer clock */
85 int copper; /* PHY type */
86 unsigned char irq; /* IRQ */
87 unsigned int base; /* IO base address */
88 struct pci_dev *pci_dev; /* PCI stuff */
89 spinlock_t lock;
90};
91
92
93#define ZATM_DEV(d) ((struct zatm_dev *) (d)->dev_data)
94#define ZATM_VCC(d) ((struct zatm_vcc *) (d)->dev_data)
95
96
97struct zatm_skb_prv {
98 struct atm_skb_data _; /* reserved */
99 u32 *dsc; /* pointer to skb's descriptor */
100};
101
102#define ZATM_PRV_DSC(skb) (((struct zatm_skb_prv *) (skb)->cb)->dsc)
103
104#endif