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1da177e4 LT |
1 | /* $Id: jade.c,v 1.9.2.4 2004/01/14 16:04:48 keil Exp $ |
2 | * | |
3 | * JADE stuff (derived from original hscx.c) | |
4 | * | |
5 | * Author Roland Klabunde | |
6 | * Copyright by Roland Klabunde <R.Klabunde@Berkom.de> | |
7 | * | |
8 | * This software may be used and distributed according to the terms | |
9 | * of the GNU General Public License, incorporated herein by reference. | |
10 | * | |
11 | */ | |
12 | ||
13 | ||
14 | #include <linux/init.h> | |
15 | #include "hisax.h" | |
16 | #include "hscx.h" | |
17 | #include "jade.h" | |
18 | #include "isdnl1.h" | |
19 | #include <linux/interrupt.h> | |
20 | ||
21 | ||
22 | int __init | |
23 | JadeVersion(struct IsdnCardState *cs, char *s) | |
24 | { | |
25 | int ver,i; | |
26 | int to = 50; | |
27 | cs->BC_Write_Reg(cs, -1, 0x50, 0x19); | |
28 | i=0; | |
29 | while (to) { | |
30 | udelay(1); | |
31 | ver = cs->BC_Read_Reg(cs, -1, 0x60); | |
32 | to--; | |
33 | if (ver) | |
34 | break; | |
35 | if (!to) { | |
36 | printk(KERN_INFO "%s JADE version not obtainable\n", s); | |
37 | return (0); | |
38 | } | |
39 | } | |
40 | /* Wait for the JADE */ | |
41 | udelay(10); | |
42 | /* Read version */ | |
43 | ver = cs->BC_Read_Reg(cs, -1, 0x60); | |
44 | printk(KERN_INFO "%s JADE version: %d\n", s, ver); | |
45 | return (1); | |
46 | } | |
47 | ||
48 | /* Write to indirect accessible jade register set */ | |
49 | static void | |
50 | jade_write_indirect(struct IsdnCardState *cs, u_char reg, u_char value) | |
51 | { | |
52 | int to = 50; | |
53 | u_char ret; | |
54 | ||
55 | /* Write the data */ | |
56 | cs->BC_Write_Reg(cs, -1, COMM_JADE+1, value); | |
57 | /* Say JADE we wanna write indirect reg 'reg' */ | |
58 | cs->BC_Write_Reg(cs, -1, COMM_JADE, reg); | |
59 | to = 50; | |
60 | /* Wait for RDY goes high */ | |
61 | while (to) { | |
62 | udelay(1); | |
63 | ret = cs->BC_Read_Reg(cs, -1, COMM_JADE); | |
64 | to--; | |
65 | if (ret & 1) | |
66 | /* Got acknowledge */ | |
67 | break; | |
68 | if (!to) { | |
69 | printk(KERN_INFO "Can not see ready bit from JADE DSP (reg=0x%X, value=0x%X)\n", reg, value); | |
70 | return; | |
71 | } | |
72 | } | |
73 | } | |
74 | ||
75 | ||
76 | ||
672c3fd9 | 77 | static void |
1da177e4 LT |
78 | modejade(struct BCState *bcs, int mode, int bc) |
79 | { | |
80 | struct IsdnCardState *cs = bcs->cs; | |
81 | int jade = bcs->hw.hscx.hscx; | |
82 | ||
83 | if (cs->debug & L1_DEB_HSCX) { | |
84 | char tmp[40]; | |
85 | sprintf(tmp, "jade %c mode %d ichan %d", | |
86 | 'A' + jade, mode, bc); | |
87 | debugl1(cs, tmp); | |
88 | } | |
89 | bcs->mode = mode; | |
90 | bcs->channel = bc; | |
91 | ||
92 | cs->BC_Write_Reg(cs, jade, jade_HDLC_MODE, (mode == L1_MODE_TRANS ? jadeMODE_TMO:0x00)); | |
93 | cs->BC_Write_Reg(cs, jade, jade_HDLC_CCR0, (jadeCCR0_PU|jadeCCR0_ITF)); | |
94 | cs->BC_Write_Reg(cs, jade, jade_HDLC_CCR1, 0x00); | |
95 | ||
96 | jade_write_indirect(cs, jade_HDLC1SERRXPATH, 0x08); | |
97 | jade_write_indirect(cs, jade_HDLC2SERRXPATH, 0x08); | |
98 | jade_write_indirect(cs, jade_HDLC1SERTXPATH, 0x00); | |
99 | jade_write_indirect(cs, jade_HDLC2SERTXPATH, 0x00); | |
100 | ||
101 | cs->BC_Write_Reg(cs, jade, jade_HDLC_XCCR, 0x07); | |
102 | cs->BC_Write_Reg(cs, jade, jade_HDLC_RCCR, 0x07); | |
103 | ||
104 | if (bc == 0) { | |
105 | cs->BC_Write_Reg(cs, jade, jade_HDLC_TSAX, 0x00); | |
106 | cs->BC_Write_Reg(cs, jade, jade_HDLC_TSAR, 0x00); | |
107 | } else { | |
108 | cs->BC_Write_Reg(cs, jade, jade_HDLC_TSAX, 0x04); | |
109 | cs->BC_Write_Reg(cs, jade, jade_HDLC_TSAR, 0x04); | |
110 | } | |
111 | switch (mode) { | |
112 | case (L1_MODE_NULL): | |
113 | cs->BC_Write_Reg(cs, jade, jade_HDLC_MODE, jadeMODE_TMO); | |
114 | break; | |
115 | case (L1_MODE_TRANS): | |
116 | cs->BC_Write_Reg(cs, jade, jade_HDLC_MODE, (jadeMODE_TMO|jadeMODE_RAC|jadeMODE_XAC)); | |
117 | break; | |
118 | case (L1_MODE_HDLC): | |
119 | cs->BC_Write_Reg(cs, jade, jade_HDLC_MODE, (jadeMODE_RAC|jadeMODE_XAC)); | |
120 | break; | |
121 | } | |
122 | if (mode) { | |
123 | cs->BC_Write_Reg(cs, jade, jade_HDLC_RCMD, (jadeRCMD_RRES|jadeRCMD_RMC)); | |
124 | cs->BC_Write_Reg(cs, jade, jade_HDLC_XCMD, jadeXCMD_XRES); | |
125 | /* Unmask ints */ | |
126 | cs->BC_Write_Reg(cs, jade, jade_HDLC_IMR, 0xF8); | |
127 | } | |
128 | else | |
129 | /* Mask ints */ | |
130 | cs->BC_Write_Reg(cs, jade, jade_HDLC_IMR, 0x00); | |
131 | } | |
132 | ||
133 | static void | |
134 | jade_l2l1(struct PStack *st, int pr, void *arg) | |
135 | { | |
136 | struct BCState *bcs = st->l1.bcs; | |
137 | struct sk_buff *skb = arg; | |
138 | u_long flags; | |
139 | ||
140 | switch (pr) { | |
141 | case (PH_DATA | REQUEST): | |
142 | spin_lock_irqsave(&bcs->cs->lock, flags); | |
143 | if (bcs->tx_skb) { | |
144 | skb_queue_tail(&bcs->squeue, skb); | |
145 | } else { | |
146 | bcs->tx_skb = skb; | |
147 | test_and_set_bit(BC_FLG_BUSY, &bcs->Flag); | |
148 | bcs->hw.hscx.count = 0; | |
149 | bcs->cs->BC_Send_Data(bcs); | |
150 | } | |
151 | spin_unlock_irqrestore(&bcs->cs->lock, flags); | |
152 | break; | |
153 | case (PH_PULL | INDICATION): | |
154 | spin_lock_irqsave(&bcs->cs->lock, flags); | |
155 | if (bcs->tx_skb) { | |
156 | printk(KERN_WARNING "jade_l2l1: this shouldn't happen\n"); | |
157 | } else { | |
158 | test_and_set_bit(BC_FLG_BUSY, &bcs->Flag); | |
159 | bcs->tx_skb = skb; | |
160 | bcs->hw.hscx.count = 0; | |
161 | bcs->cs->BC_Send_Data(bcs); | |
162 | } | |
163 | spin_unlock_irqrestore(&bcs->cs->lock, flags); | |
164 | break; | |
165 | case (PH_PULL | REQUEST): | |
166 | if (!bcs->tx_skb) { | |
167 | test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags); | |
168 | st->l1.l1l2(st, PH_PULL | CONFIRM, NULL); | |
169 | } else | |
170 | test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags); | |
171 | break; | |
172 | case (PH_ACTIVATE | REQUEST): | |
173 | spin_lock_irqsave(&bcs->cs->lock, flags); | |
174 | test_and_set_bit(BC_FLG_ACTIV, &bcs->Flag); | |
175 | modejade(bcs, st->l1.mode, st->l1.bc); | |
176 | spin_unlock_irqrestore(&bcs->cs->lock, flags); | |
177 | l1_msg_b(st, pr, arg); | |
178 | break; | |
179 | case (PH_DEACTIVATE | REQUEST): | |
180 | l1_msg_b(st, pr, arg); | |
181 | break; | |
182 | case (PH_DEACTIVATE | CONFIRM): | |
183 | spin_lock_irqsave(&bcs->cs->lock, flags); | |
184 | test_and_clear_bit(BC_FLG_ACTIV, &bcs->Flag); | |
185 | test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag); | |
186 | modejade(bcs, 0, st->l1.bc); | |
187 | spin_unlock_irqrestore(&bcs->cs->lock, flags); | |
188 | st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL); | |
189 | break; | |
190 | } | |
191 | } | |
192 | ||
672c3fd9 | 193 | static void |
1da177e4 LT |
194 | close_jadestate(struct BCState *bcs) |
195 | { | |
196 | modejade(bcs, 0, bcs->channel); | |
197 | if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) { | |
198 | if (bcs->hw.hscx.rcvbuf) { | |
199 | kfree(bcs->hw.hscx.rcvbuf); | |
200 | bcs->hw.hscx.rcvbuf = NULL; | |
201 | } | |
202 | if (bcs->blog) { | |
203 | kfree(bcs->blog); | |
204 | bcs->blog = NULL; | |
205 | } | |
206 | skb_queue_purge(&bcs->rqueue); | |
207 | skb_queue_purge(&bcs->squeue); | |
208 | if (bcs->tx_skb) { | |
209 | dev_kfree_skb_any(bcs->tx_skb); | |
210 | bcs->tx_skb = NULL; | |
211 | test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag); | |
212 | } | |
213 | } | |
214 | } | |
215 | ||
216 | static int | |
217 | open_jadestate(struct IsdnCardState *cs, struct BCState *bcs) | |
218 | { | |
219 | if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) { | |
220 | if (!(bcs->hw.hscx.rcvbuf = kmalloc(HSCX_BUFMAX, GFP_ATOMIC))) { | |
221 | printk(KERN_WARNING | |
222 | "HiSax: No memory for hscx.rcvbuf\n"); | |
223 | test_and_clear_bit(BC_FLG_INIT, &bcs->Flag); | |
224 | return (1); | |
225 | } | |
226 | if (!(bcs->blog = kmalloc(MAX_BLOG_SPACE, GFP_ATOMIC))) { | |
227 | printk(KERN_WARNING | |
228 | "HiSax: No memory for bcs->blog\n"); | |
229 | test_and_clear_bit(BC_FLG_INIT, &bcs->Flag); | |
230 | kfree(bcs->hw.hscx.rcvbuf); | |
231 | bcs->hw.hscx.rcvbuf = NULL; | |
232 | return (2); | |
233 | } | |
234 | skb_queue_head_init(&bcs->rqueue); | |
235 | skb_queue_head_init(&bcs->squeue); | |
236 | } | |
237 | bcs->tx_skb = NULL; | |
238 | test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag); | |
239 | bcs->event = 0; | |
240 | bcs->hw.hscx.rcvidx = 0; | |
241 | bcs->tx_cnt = 0; | |
242 | return (0); | |
243 | } | |
244 | ||
245 | ||
672c3fd9 | 246 | static int |
1da177e4 LT |
247 | setstack_jade(struct PStack *st, struct BCState *bcs) |
248 | { | |
249 | bcs->channel = st->l1.bc; | |
250 | if (open_jadestate(st->l1.hardware, bcs)) | |
251 | return (-1); | |
252 | st->l1.bcs = bcs; | |
253 | st->l2.l2l1 = jade_l2l1; | |
254 | setstack_manager(st); | |
255 | bcs->st = st; | |
256 | setstack_l1_B(st); | |
257 | return (0); | |
258 | } | |
259 | ||
260 | void __init | |
261 | clear_pending_jade_ints(struct IsdnCardState *cs) | |
262 | { | |
263 | int val; | |
264 | char tmp[64]; | |
265 | ||
266 | cs->BC_Write_Reg(cs, 0, jade_HDLC_IMR, 0x00); | |
267 | cs->BC_Write_Reg(cs, 1, jade_HDLC_IMR, 0x00); | |
268 | ||
269 | val = cs->BC_Read_Reg(cs, 1, jade_HDLC_ISR); | |
270 | sprintf(tmp, "jade B ISTA %x", val); | |
271 | debugl1(cs, tmp); | |
272 | val = cs->BC_Read_Reg(cs, 0, jade_HDLC_ISR); | |
273 | sprintf(tmp, "jade A ISTA %x", val); | |
274 | debugl1(cs, tmp); | |
275 | val = cs->BC_Read_Reg(cs, 1, jade_HDLC_STAR); | |
276 | sprintf(tmp, "jade B STAR %x", val); | |
277 | debugl1(cs, tmp); | |
278 | val = cs->BC_Read_Reg(cs, 0, jade_HDLC_STAR); | |
279 | sprintf(tmp, "jade A STAR %x", val); | |
280 | debugl1(cs, tmp); | |
281 | /* Unmask ints */ | |
282 | cs->BC_Write_Reg(cs, 0, jade_HDLC_IMR, 0xF8); | |
283 | cs->BC_Write_Reg(cs, 1, jade_HDLC_IMR, 0xF8); | |
284 | } | |
285 | ||
286 | void __init | |
287 | initjade(struct IsdnCardState *cs) | |
288 | { | |
289 | cs->bcs[0].BC_SetStack = setstack_jade; | |
290 | cs->bcs[1].BC_SetStack = setstack_jade; | |
291 | cs->bcs[0].BC_Close = close_jadestate; | |
292 | cs->bcs[1].BC_Close = close_jadestate; | |
293 | cs->bcs[0].hw.hscx.hscx = 0; | |
294 | cs->bcs[1].hw.hscx.hscx = 1; | |
295 | ||
296 | /* Stop DSP audio tx/rx */ | |
297 | jade_write_indirect(cs, 0x11, 0x0f); | |
298 | jade_write_indirect(cs, 0x17, 0x2f); | |
299 | ||
300 | /* Transparent Mode, RxTx inactive, No Test, No RFS/TFS */ | |
301 | cs->BC_Write_Reg(cs, 0, jade_HDLC_MODE, jadeMODE_TMO); | |
302 | cs->BC_Write_Reg(cs, 1, jade_HDLC_MODE, jadeMODE_TMO); | |
303 | /* Power down, 1-Idle, RxTx least significant bit first */ | |
304 | cs->BC_Write_Reg(cs, 0, jade_HDLC_CCR0, 0x00); | |
305 | cs->BC_Write_Reg(cs, 1, jade_HDLC_CCR0, 0x00); | |
306 | /* Mask all interrupts */ | |
307 | cs->BC_Write_Reg(cs, 0, jade_HDLC_IMR, 0x00); | |
308 | cs->BC_Write_Reg(cs, 1, jade_HDLC_IMR, 0x00); | |
309 | /* Setup host access to hdlc controller */ | |
310 | jade_write_indirect(cs, jade_HDLCCNTRACCESS, (jadeINDIRECT_HAH1|jadeINDIRECT_HAH2)); | |
311 |