drivers/isdn/hisax/telespci.c

   1 /* $Id: telespci.c,v 2.23.2.3 2004/01/13 14:31:26 keil Exp $
   2  *
   3  * low level stuff for Teles PCI isdn cards
   4  *
   5  * Author       Ton van Rosmalen
   6  *              Karsten Keil
   7  * Copyright    by Ton van Rosmalen
   8  *              by Karsten Keil      <keil@isdn4linux.de>
   9  *
  10  * This software may be used and distributed according to the terms
  11  * of the GNU General Public License, incorporated herein by reference.
  12  *
  13  */
  14
  15 #include <linux/init.h>
  16 #include "hisax.h"
  17 #include "isac.h"
  18 #include "hscx.h"
  19 #include "isdnl1.h"
  20 #include <linux/pci.h>
  21
  22 extern const char *CardType[];
  23 static const char *telespci_revision = "$Revision: 2.23.2.3 $";
  24
  25 #define ZORAN_PO_RQ_PEN 0x02000000
  26 #define ZORAN_PO_WR     0x00800000
  27 #define ZORAN_PO_GID0   0x00000000
  28 #define ZORAN_PO_GID1   0x00100000
  29 #define ZORAN_PO_GREG0  0x00000000
  30 #define ZORAN_PO_GREG1  0x00010000
  31 #define ZORAN_PO_DMASK  0xFF
  32
  33 #define WRITE_ADDR_ISAC (ZORAN_PO_WR | ZORAN_PO_GID0 | ZORAN_PO_GREG0)
  34 #define READ_DATA_ISAC  (ZORAN_PO_GID0 | ZORAN_PO_GREG1)
  35 #define WRITE_DATA_ISAC (ZORAN_PO_WR | ZORAN_PO_GID0 | ZORAN_PO_GREG1)
  36 #define WRITE_ADDR_HSCX (ZORAN_PO_WR | ZORAN_PO_GID1 | ZORAN_PO_GREG0)
  37 #define READ_DATA_HSCX  (ZORAN_PO_GID1 | ZORAN_PO_GREG1)
  38 #define WRITE_DATA_HSCX (ZORAN_PO_WR | ZORAN_PO_GID1 | ZORAN_PO_GREG1)
  39
  40 #define ZORAN_WAIT_NOBUSY       do { \
  41                                         portdata = readl(adr + 0x200); \
  42                                 } while (portdata & ZORAN_PO_RQ_PEN)
  43
  44 static inline u_char
  45 readisac(void __iomem *adr, u_char off)
  46 {
  47         register unsigned int portdata;
  48
  49         ZORAN_WAIT_NOBUSY;
  50
  51         /* set address for ISAC */
  52         writel(WRITE_ADDR_ISAC | off, adr + 0x200);
  53         ZORAN_WAIT_NOBUSY;
  54
  55         /* read data from ISAC */
  56         writel(READ_DATA_ISAC, adr + 0x200);
  57         ZORAN_WAIT_NOBUSY;
  58         return((u_char)(portdata & ZORAN_PO_DMASK));
  59 }
  60
  61 static inline void
  62 writeisac(void __iomem *adr, u_char off, u_char data)
  63 {
  64         register unsigned int portdata;
  65
  66         ZORAN_WAIT_NOBUSY;
  67
  68         /* set address for ISAC */
  69         writel(WRITE_ADDR_ISAC | off, adr + 0x200);
  70         ZORAN_WAIT_NOBUSY;
  71
  72         /* write data to ISAC */
  73         writel(WRITE_DATA_ISAC | data, adr + 0x200);
  74         ZORAN_WAIT_NOBUSY;
  75 }
  76
  77 static inline u_char
  78 readhscx(void __iomem *adr, int hscx, u_char off)
  79 {
  80         register unsigned int portdata;
  81
  82         ZORAN_WAIT_NOBUSY;
  83         /* set address for HSCX */
  84         writel(WRITE_ADDR_HSCX | ((hscx ? 0x40:0) + off), adr + 0x200);
  85         ZORAN_WAIT_NOBUSY;
  86
  87         /* read data from HSCX */
  88         writel(READ_DATA_HSCX, adr + 0x200);
  89         ZORAN_WAIT_NOBUSY;
  90         return ((u_char)(portdata & ZORAN_PO_DMASK));
  91 }
  92
  93 static inline void
  94 writehscx(void __iomem *adr, int hscx, u_char off, u_char data)
  95 {
  96         register unsigned int portdata;
  97
  98         ZORAN_WAIT_NOBUSY;
  99         /* set address for HSCX */
 100         writel(WRITE_ADDR_HSCX | ((hscx ? 0x40:0) + off), adr + 0x200);
 101         ZORAN_WAIT_NOBUSY;
 102
 103         /* write data to HSCX */
 104         writel(WRITE_DATA_HSCX | data, adr + 0x200);
 105         ZORAN_WAIT_NOBUSY;
 106 }
 107
 108 static inline void
 109 read_fifo_isac(void __iomem *adr, u_char * data, int size)
 110 {
 111         register unsigned int portdata;
 112         register int i;
 113
 114         ZORAN_WAIT_NOBUSY;
 115         /* read data from ISAC */
 116         for (i = 0; i < size; i++) {
 117                 /* set address for ISAC fifo */
 118                 writel(WRITE_ADDR_ISAC | 0x1E, adr + 0x200);
 119                 ZORAN_WAIT_NOBUSY;
 120                 writel(READ_DATA_ISAC, adr + 0x200);
 121                 ZORAN_WAIT_NOBUSY;
 122                 data[i] = (u_char)(portdata & ZORAN_PO_DMASK);
 123         }
 124 }
 125
 126 static void
 127 write_fifo_isac(void __iomem *adr, u_char * data, int size)
 128 {
 129         register unsigned int portdata;
 130         register int i;
 131
 132         ZORAN_WAIT_NOBUSY;
 133         /* write data to ISAC */
 134         for (i = 0; i < size; i++) {
 135                 /* set address for ISAC fifo */
 136                 writel(WRITE_ADDR_ISAC | 0x1E, adr + 0x200);
 137                 ZORAN_WAIT_NOBUSY;
 138                 writel(WRITE_DATA_ISAC | data[i], adr + 0x200);
 139                 ZORAN_WAIT_NOBUSY;
 140         }
 141 }
 142
 143 static inline void
 144 read_fifo_hscx(void __iomem *adr, int hscx, u_char * data, int size)
 145 {
 146         register unsigned int portdata;
 147         register int i;
 148
 149         ZORAN_WAIT_NOBUSY;
 150         /* read data from HSCX */
 151         for (i = 0; i < size; i++) {
 152                 /* set address for HSCX fifo */
 153                 writel(WRITE_ADDR_HSCX |(hscx ? 0x5F:0x1F), adr + 0x200);
 154                 ZORAN_WAIT_NOBUSY;
 155                 writel(READ_DATA_HSCX, adr + 0x200);
 156                 ZORAN_WAIT_NOBUSY;
 157                 data[i] = (u_char) (portdata & ZORAN_PO_DMASK);
 158         }
 159 }
 160
 161 static inline void
 162 write_fifo_hscx(void __iomem *adr, int hscx, u_char * data, int size)
 163 {
 164         unsigned int portdata;
 165         register int i;
 166
 167         ZORAN_WAIT_NOBUSY;
 168         /* write data to HSCX */
 169         for (i = 0; i < size; i++) {
 170                 /* set address for HSCX fifo */
 171                 writel(WRITE_ADDR_HSCX |(hscx ? 0x5F:0x1F), adr + 0x200);
 172                 ZORAN_WAIT_NOBUSY;
 173                 writel(WRITE_DATA_HSCX | data[i], adr + 0x200);
 174                 ZORAN_WAIT_NOBUSY;
 175                 udelay(10);
 176         }
 177 }
 178
 179 /* Interface functions */
 180
 181 static u_char
 182 ReadISAC(struct IsdnCardState *cs, u_char offset)
 183 {
 184         return (readisac(cs->hw.teles0.membase, offset));
 185 }
 186
 187 static void
 188 WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
 189 {
 190         writeisac(cs->hw.teles0.membase, offset, value);
 191 }
 192
 193 static void
 194 ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
 195 {
 196         read_fifo_isac(cs->hw.teles0.membase, data, size);
 197 }
 198
 199 static void
 200 WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
 201 {
 202         write_fifo_isac(cs->hw.teles0.membase, data, size);
 203 }
 204
 205 static u_char
 206 ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
 207 {
 208         return (readhscx(cs->hw.teles0.membase, hscx, offset));
 209 }
 210
 211 static void
 212 WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
 213 {
 214         writehscx(cs->hw.teles0.membase, hscx, offset, value);
 215 }
 216
 217 /*
 218  * fast interrupt HSCX stuff goes here
 219  */
 220
 221 #define READHSCX(cs, nr, reg) readhscx(cs->hw.teles0.membase, nr, reg)
 222 #define WRITEHSCX(cs, nr, reg, data) writehscx(cs->hw.teles0.membase, nr, reg, data)
 223 #define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo_hscx(cs->hw.teles0.membase, nr, ptr, cnt)
 224 #define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo_hscx(cs->hw.teles0.membase, nr, ptr, cnt)
 225
 226 #include "hscx_irq.c"
 227
 228 static irqreturn_t
 229 telespci_interrupt(int intno, void *dev_id)
 230 {
 231         struct IsdnCardState *cs = dev_id;
 232         u_char hval, ival;
 233         u_long flags;
 234
 235         spin_lock_irqsave(&cs->lock, flags);
 236         hval = readhscx(cs->hw.teles0.membase, 1, HSCX_ISTA);
 237         if (hval)
 238                 hscx_int_main(cs, hval);
 239         ival = readisac(cs->hw.teles0.membase, ISAC_ISTA);
 240         if ((hval | ival) == 0) {
 241                 spin_unlock_irqrestore(&cs->lock, flags);
 242                 return IRQ_NONE;
 243         }
 244         if (ival)
 245                 isac_interrupt(cs, ival);
 246         /* Clear interrupt register for Zoran PCI controller */
 247         writel(0x70000000, cs->hw.teles0.membase + 0x3C);
 248
 249         writehscx(cs->hw.teles0.membase, 0, HSCX_MASK, 0xFF);
 250         writehscx(cs->hw.teles0.membase, 1, HSCX_MASK, 0xFF);
 251         writeisac(cs->hw.teles0.membase, ISAC_MASK, 0xFF);
 252         writeisac(cs->hw.teles0.membase, ISAC_MASK, 0x0);
 253         writehscx(cs->hw.teles0.membase, 0, HSCX_MASK, 0x0);
 254         writehscx(cs->hw.teles0.membase, 1, HSCX_MASK, 0x0);
 255         spin_unlock_irqrestore(&cs->lock, flags);
 256         return IRQ_HANDLED;
 257 }
 258
 259 static void
 260 release_io_telespci(struct IsdnCardState *cs)
 261 {
 262         iounmap(cs->hw.teles0.membase);
 263 }
 264
 265 static int
 266 TelesPCI_card_msg(struct IsdnCardState *cs, int mt, void *arg)
 267 {
 268         u_long flags;
 269
 270         switch (mt) {
 271                 case CARD_RESET:
 272                         return(0);
 273                 case CARD_RELEASE:
 274                         release_io_telespci(cs);
 275                         return(0);
 276                 case CARD_INIT:
 277                         spin_lock_irqsave(&cs->lock, flags);
 278                         inithscxisac(cs, 3);
 279                         spin_unlock_irqrestore(&cs->lock, flags);
 280                         return(0);
 281                 case CARD_TEST:
 282                         return(0);
 283         }
 284         return(0);
 285 }
 286
 287 static struct pci_dev *dev_tel __devinitdata = NULL;
 288
 289 int __devinit
 290 setup_telespci(struct IsdnCard *card)
 291 {
 292         struct IsdnCardState *cs = card->cs;
 293         char tmp[64];
 294
 295 #ifdef __BIG_ENDIAN
 296 #error "not running on big endian machines now"
 297 #endif
 298         strcpy(tmp, telespci_revision);
 299         printk(KERN_INFO "HiSax: Teles/PCI driver Rev. %s\n", HiSax_getrev(tmp));
 300         if (cs->typ != ISDN_CTYPE_TELESPCI)
 301                 return (0);
 302 #ifdef CONFIG_PCI
 303         if ((dev_tel = pci_find_device (PCI_VENDOR_ID_ZORAN, PCI_DEVICE_ID_ZORAN_36120, dev_tel))) {
 304                 if (pci_enable_device(dev_tel))
 305                         return(0);
 306                 cs->irq = dev_tel->irq;
 307                 if (!cs->irq) {
 308                         printk(KERN_WARNING "Teles: No IRQ for PCI card found\n");
 309                         return(0);
 310                 }
 311                 cs->hw.teles0.membase = ioremap(pci_resource_start(dev_tel, 0),
 312                         PAGE_SIZE);
 313                 printk(KERN_INFO "Found: Zoran, base-address: 0x%llx, irq: 0x%x\n",
 314                         (unsigned long long)pci_resource_start(dev_tel, 0),
 315                         dev_tel->irq);
 316         } else {
 317                 printk(KERN_WARNING "TelesPCI: No PCI card found\n");
 318                 return(0);
 319         }
 320 #else
 321         printk(KERN_WARNING "HiSax: Teles/PCI and NO_PCI_BIOS\n");
 322         printk(KERN_WARNING "HiSax: Teles/PCI unable to config\n");
 323         return (0);
 324 #endif /* CONFIG_PCI */
 325
 326         /* Initialize Zoran PCI controller */
 327         writel(0x00000000, cs->hw.teles0.membase + 0x28);
 328         writel(0x01000000, cs->hw.teles0.membase + 0x28);
 329         writel(0x01000000, cs->hw.teles0.membase + 0x28);
 330         writel(0x7BFFFFFF, cs->hw.teles0.membase + 0x2C);
 331         writel(0x70000000, cs->hw.teles0.membase + 0x3C);
 332         writel(0x61000000, cs->hw.teles0.membase + 0x40);
 333         /* writel(0x00800000, cs->hw.teles0.membase + 0x200); */
 334
 335         printk(KERN_INFO
 336                "HiSax: %s config irq:%d mem:%p\n",
 337                CardType[cs->typ], cs->irq,
 338                cs->hw.teles0.membase);
 339
 340         setup_isac(cs);
 341         cs->readisac = &ReadISAC;
 342         cs->writeisac = &WriteISAC;
 343         cs->readisacfifo = &ReadISACfifo;
 344         cs->writeisacfifo = &WriteISACfifo;
 345         cs->BC_Read_Reg = &ReadHSCX;
 346         cs->BC_Write_Reg = &WriteHSCX;
 347         cs->BC_Send_Data = &hscx_fill_fifo;
 348         cs->cardmsg = &TelesPCI_card_msg;
 349         cs->irq_func = &telespci_interrupt;
 350         cs->irq_flags |= IRQF_SHARED;
 351         ISACVersion(cs, "TelesPCI:");
 352         if (HscxVersion(cs, "TelesPCI:")) {
 353                 printk(KERN_WARNING
 354                  "TelesPCI: wrong HSCX versions check IO/MEM addresses\n");
 355                 release_io_telespci(cs);
 356                 return (0);
 357         }
 358         return (1);
 359 }