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#include <linux/slab.h> 21 22 23int 24JadeVersion(struct IsdnCardState *cs, char *s) 25{ 26 int ver; 27 int to = 50; 28 cs->BC_Write_Reg(cs, -1, 0x50, 0x19); 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 */ 49static void 50jade_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 77static void 78modejade(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 133static void 134jade_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 193static void 194close_jadestate(struct BCState *bcs) 195{ 196 modejade(bcs, 0, bcs->channel); 197 if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) { 198 kfree(bcs->hw.hscx.rcvbuf); 199 bcs->hw.hscx.rcvbuf = NULL; 200 kfree(bcs->blog); 201 bcs->blog = NULL; 202 skb_queue_purge(&bcs->rqueue); 203 skb_queue_purge(&bcs->squeue); 204 if (bcs->tx_skb) { 205 dev_kfree_skb_any(bcs->tx_skb); 206 bcs->tx_skb = NULL; 207 test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag); 208 } 209 } 210} 211 212static int 213open_jadestate(struct IsdnCardState *cs, struct BCState *bcs) 214{ 215 if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) { 216 if (!(bcs->hw.hscx.rcvbuf = kmalloc(HSCX_BUFMAX, GFP_ATOMIC))) { 217 printk(KERN_WARNING 218 "HiSax: No memory for hscx.rcvbuf\n"); 219 test_and_clear_bit(BC_FLG_INIT, &bcs->Flag); 220 return (1); 221 } 222 if (!(bcs->blog = kmalloc(MAX_BLOG_SPACE, GFP_ATOMIC))) { 223 printk(KERN_WARNING 224 "HiSax: No memory for bcs->blog\n"); 225 test_and_clear_bit(BC_FLG_INIT, &bcs->Flag); 226 kfree(bcs->hw.hscx.rcvbuf); 227 bcs->hw.hscx.rcvbuf = NULL; 228 return (2); 229 } 230 skb_queue_head_init(&bcs->rqueue); 231 skb_queue_head_init(&bcs->squeue); 232 } 233 bcs->tx_skb = NULL; 234 test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag); 235 bcs->event = 0; 236 bcs->hw.hscx.rcvidx = 0; 237 bcs->tx_cnt = 0; 238 return (0); 239} 240 241 242static int 243setstack_jade(struct PStack *st, struct BCState *bcs) 244{ 245 bcs->channel = st->l1.bc; 246 if (open_jadestate(st->l1.hardware, bcs)) 247 return (-1); 248 st->l1.bcs = bcs; 249 st->l2.l2l1 = jade_l2l1; 250 setstack_manager(st); 251 bcs->st = st; 252 setstack_l1_B(st); 253 return (0); 254} 255 256void 257clear_pending_jade_ints(struct IsdnCardState *cs) 258{ 259 int val; 260 char tmp[64]; 261 262 cs->BC_Write_Reg(cs, 0, jade_HDLC_IMR, 0x00); 263 cs->BC_Write_Reg(cs, 1, jade_HDLC_IMR, 0x00); 264 265 val = cs->BC_Read_Reg(cs, 1, jade_HDLC_ISR); 266 sprintf(tmp, "jade B ISTA %x", val); 267 debugl1(cs, tmp); 268 val = cs->BC_Read_Reg(cs, 0, jade_HDLC_ISR); 269 sprintf(tmp, "jade A ISTA %x", val); 270 debugl1(cs, tmp); 271 val = cs->BC_Read_Reg(cs, 1, jade_HDLC_STAR); 272 sprintf(tmp, "jade B STAR %x", val); 273 debugl1(cs, tmp); 274 val = cs->BC_Read_Reg(cs, 0, jade_HDLC_STAR); 275 sprintf(tmp, "jade A STAR %x", val); 276 debugl1(cs, tmp); 277 /* Unmask ints */ 278 cs->BC_Write_Reg(cs, 0, jade_HDLC_IMR, 0xF8); 279 cs->BC_Write_Reg(cs, 1, jade_HDLC_IMR, 0xF8); 280} 281 282void 283initjade(struct IsdnCardState *cs) 284{ 285 cs->bcs[0].BC_SetStack = setstack_jade; 286 cs->bcs[1].BC_SetStack = setstack_jade; 287 cs->bcs[0].BC_Close = close_jadestate; 288 cs->bcs[1].BC_Close = close_jadestate; 289 cs->bcs[0].hw.hscx.hscx = 0; 290 cs->bcs[1].hw.hscx.hscx = 1; 291 292 /* Stop DSP audio tx/rx */ 293 jade_write_indirect(cs, 0x11, 0x0f); 294 jade_write_indirect(cs, 0x17, 0x2f); 295 296 /* Transparent Mode, RxTx inactive, No Test, No RFS/TFS */ 297 cs->BC_Write_Reg(cs, 0, jade_HDLC_MODE, jadeMODE_TMO); 298 cs->BC_Write_Reg(cs, 1, jade_HDLC_MODE, jadeMODE_TMO); 299 /* Power down, 1-Idle, RxTx least significant bit first */ 300 cs->BC_Write_Reg(cs, 0, jade_HDLC_CCR0, 0x00); 301 cs->BC_Write_Reg(cs, 1, jade_HDLC_CCR0, 0x00); 302 /* Mask all interrupts */ 303 cs->BC_Write_Reg(cs, 0, jade_HDLC_IMR, 0x00); 304 cs->BC_Write_Reg(cs, 1, jade_HDLC_IMR, 0x00); 305 /* Setup host access to hdlc controller */ 306 jade_write_indirect(cs, jade_HDLCCNTRACCESS, (jadeINDIRECT_HAH1 | jadeINDIRECT_HAH2)); 307 /* Unmask HDLC int (don't forget DSP int later on)*/ 308 cs->BC_Write_Reg(cs, -1, jade_INT, (jadeINT_HDLC1 | jadeINT_HDLC2)); 309 310 /* once again TRANSPARENT */ 311 modejade(cs->bcs, 0, 0); 312 modejade(cs->bcs + 1, 0, 0); 313} 314