1 /*
2 * 06/02/02 -Armin
3 * added new mal functions and defines from ibm_ocp_enet.h
4 */
5
6 #ifndef _IBM_OCP_MAL_H
7 #define _IBM_OCP_MAL_H
8
9 #include <linux/list.h>
10
11 #define MAL_DT_ALIGN (4096) /* Alignment for each channel's descriptor table */
12
13 #define MAL_CHAN_MASK(chan) (0x80000000 >> (chan))
14
15 /* MAL Buffer Descriptor structure */
16 struct mal_descriptor {
17 volatile unsigned short ctrl; /* MAL / Commac status control bits */
18 volatile short data_len; /* Max length is 4K-1 (12 bits) */
19 unsigned char *data_ptr; /* pointer to actual data buffer */
20 } __attribute__((packed));
21
22 /* the following defines are for the MadMAL status and control registers. */
23 /* MADMAL transmit and receive status/control bits */
24 #define MAL_RX_CTRL_EMPTY 0x8000
25 #define MAL_RX_CTRL_WRAP 0x4000
26 #define MAL_RX_CTRL_CM 0x2000
27 #define MAL_RX_CTRL_LAST 0x1000
28 #define MAL_RX_CTRL_FIRST 0x0800
29 #define MAL_RX_CTRL_INTR 0x0400
30
31 #define MAL_TX_CTRL_READY 0x8000
32 #define MAL_TX_CTRL_WRAP 0x4000
33 #define MAL_TX_CTRL_CM 0x2000
34 #define MAL_TX_CTRL_LAST 0x1000
35 #define MAL_TX_CTRL_INTR 0x0400
36
37 struct mal_commac_ops {
38 void (*txeob)(void *dev, u32 chanmask);
39 void (*txde)(void *dev, u32 chanmask);
40 void (*rxeob)(void *dev, u32 chanmask);
41 void (*rxde)(void *dev, u32 chanmask);
42 };
43
44 struct mal_commac {
45 struct mal_commac_ops *ops;
46 void *dev;
47 u32 tx_chan_mask, rx_chan_mask;
48 struct list_head list;
49 };
50
51 /* FIXME: Work this out better */
52 #define MAL_MAX_TX_CHANNELS (EMAC_NUMS*2)
53 #define MAL_MAX_RX_CHANNELS (EMAC_NUMS)
54
55 struct ibm_ocp_mal {
56 int dcrbase;
57 int serr_irq, txeob_irq, txde_irq, rxeob_irq, rxde_irq;
58
59 struct list_head commac;
60 u32 tx_chan_mask, rx_chan_mask;
61
62 int num_tx_channels;
63 dma_addr_t tx_phys_addr;
64 struct mal_descriptor *tx_virt_addr;
65
66 int num_rx_channels;
67 dma_addr_t rx_phys_addr;
68 struct mal_descriptor *rx_virt_addr;
69 };
70
71 #ifdef DCRN_MAL1_BASE
72 #define NUM_MALS 2
73 #else
74 #define NUM_MALS 1
75 #endif
76
77 extern struct ibm_ocp_mal mal_table[NUM_MALS];
78
79 #define GET_MAL_STANZA(base,dcrn) \
80 case base: \
81 x = mfdcr(dcrn(base)); \
82 break;
83
84 #define SET_MAL_STANZA(base,dcrn, val) \
85 case base: \
86 mtdcr(dcrn(base), (val)); \
87 break;
88
89 #define GET_MAL0_STANZA(dcrn) GET_MAL_STANZA(DCRN_MAL_BASE,dcrn)
90 #define SET_MAL0_STANZA(dcrn,val) SET_MAL_STANZA(DCRN_MAL_BASE,dcrn,val)
91
92 #ifdef DCRN_MAL1_BASE
93 #define GET_MAL1_STANZA(dcrn) GET_MAL_STANZA(DCRN_MAL1_BASE,dcrn)
94 #define SET_MAL1_STANZA(dcrn,val) SET_MAL_STANZA(DCRN_MAL1_BASE,dcrn,val)
95 #else /* ! DCRN_MAL1_BASE */
96 #define GET_MAL1_STANZA(dcrn)
97 #define SET_MAL1_STANZA(dcrn,val)
98 #endif
99
100
101 #define get_mal_dcrn(mal, dcrn) ({ \
102 u32 x; \
103 switch ((mal)->dcrbase) { \
104 GET_MAL0_STANZA(dcrn) \
105 GET_MAL1_STANZA(dcrn) \
106 default: \
107 BUG(); \
108 } \
109 x; })
110
111 #define set_mal_dcrn(mal, dcrn, val) do { \
112 switch ((mal)->dcrbase) { \
113 SET_MAL0_STANZA(dcrn,val) \
114 SET_MAL1_STANZA(dcrn,val) \
115 default: \
116 BUG(); \
117 } } while (0)
118
119
mal_enable_tx_channels(struct ibm_ocp_mal * mal,u32 chanmask)120 static inline void mal_enable_tx_channels(struct ibm_ocp_mal *mal, u32 chanmask)
121 {
122 set_mal_dcrn(mal, DCRN_MALTXCASR,
123 get_mal_dcrn(mal, DCRN_MALTXCASR) | chanmask);
124 }
125
mal_disable_tx_channels(struct ibm_ocp_mal * mal,u32 chanmask)126 static inline void mal_disable_tx_channels(struct ibm_ocp_mal *mal, u32 chanmask)
127 {
128 set_mal_dcrn(mal, DCRN_MALTXCARR, chanmask);
129 }
130
mal_enable_rx_channels(struct ibm_ocp_mal * mal,u32 chanmask)131 static inline void mal_enable_rx_channels(struct ibm_ocp_mal *mal, u32 chanmask)
132 {
133 set_mal_dcrn(mal, DCRN_MALRXCASR,
134 get_mal_dcrn(mal, DCRN_MALRXCASR) | chanmask);
135 }
136
mal_disable_rx_channels(struct ibm_ocp_mal * mal,u32 chanmask)137 static inline void mal_disable_rx_channels(struct ibm_ocp_mal *mal, u32 chanmask)
138 {
139 set_mal_dcrn(mal, DCRN_MALRXCARR, chanmask);
140 }
141
142 extern int mal_register_commac(struct ibm_ocp_mal *mal, struct mal_commac *commac);
143 extern int mal_unregister_commac(struct ibm_ocp_mal *mal, struct mal_commac *commac);
144
145 extern int mal_set_rcbs(struct ibm_ocp_mal *mal, int channel, unsigned long size);
146
147 #endif /* _IBM_OCP_MAL_H */
148