kernel/drivers/isdn/hardware/mISDN/hfc_multi_8xx.h

   1 /*
   2  * For License see notice in hfc_multi.c
   3  *
   4  * special IO and init functions for the embedded XHFC board
   5  * from Speech Design
   6  *
   7  */
   8
   9 #include <asm/8xx_immap.h>
  10
  11 /* Change this to the value used by your board */
  12 #ifndef IMAP_ADDR
  13 #define IMAP_ADDR       0xFFF00000
  14 #endif
  15
  16 static void
  17 #ifdef HFC_REGISTER_DEBUG
  18 HFC_outb_embsd(struct hfc_multi *hc, u_char reg, u_char val,
  19                const char *function, int line)
  20 #else
  21         HFC_outb_embsd(struct hfc_multi *hc, u_char reg, u_char val)
  22 #endif
  23 {
  24         hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
  25         writeb(reg, hc->xhfc_memaddr);
  26         hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
  27         writeb(val, hc->xhfc_memdata);
  28 }
  29 static u_char
  30 #ifdef HFC_REGISTER_DEBUG
  31 HFC_inb_embsd(struct hfc_multi *hc, u_char reg, const char *function, int line)
  32 #else
  33         HFC_inb_embsd(struct hfc_multi *hc, u_char reg)
  34 #endif
  35 {
  36         hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
  37         writeb(reg, hc->xhfc_memaddr);
  38         hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
  39         return readb(hc->xhfc_memdata);
  40 }
  41 static u_short
  42 #ifdef HFC_REGISTER_DEBUG
  43 HFC_inw_embsd(struct hfc_multi *hc, u_char reg, const char *function, int line)
  44 #else
  45         HFC_inw_embsd(struct hfc_multi *hc, u_char reg)
  46 #endif
  47 {
  48         hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
  49         writeb(reg, hc->xhfc_memaddr);
  50         hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
  51         return readb(hc->xhfc_memdata);
  52 }
  53 static void
  54 #ifdef HFC_REGISTER_DEBUG
  55 HFC_wait_embsd(struct hfc_multi *hc, const char *function, int line)
  56 #else
  57         HFC_wait_embsd(struct hfc_multi *hc)
  58 #endif
  59 {
  60         hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
  61         writeb(R_STATUS, hc->xhfc_memaddr);
  62         hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
  63         while (readb(hc->xhfc_memdata) & V_BUSY)
  64                 cpu_relax();
  65 }
  66
  67 /* write fifo data (EMBSD) */
  68 void
  69 write_fifo_embsd(struct hfc_multi *hc, u_char *data, int len)
  70 {
  71         hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
  72         *hc->xhfc_memaddr = A_FIFO_DATA0;
  73         hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
  74         while (len) {
  75                 *hc->xhfc_memdata = *data;
  76                 data++;
  77                 len--;
  78         }
  79 }
  80
  81 /* read fifo data (EMBSD) */
  82 void
  83 read_fifo_embsd(struct hfc_multi *hc, u_char *data, int len)
  84 {
  85         hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
  86         *hc->xhfc_memaddr = A_FIFO_DATA0;
  87         hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
  88         while (len) {
  89                 *data = (u_char)(*hc->xhfc_memdata);
  90                 data++;
  91                 len--;
  92         }
  93 }
  94
  95 static int
  96 setup_embedded(struct hfc_multi *hc, struct hm_map *m)
  97 {
  98         printk(KERN_INFO
  99                "HFC-multi: card manufacturer: '%s' card name: '%s' clock: %s\n",
 100                m->vendor_name, m->card_name, m->clock2 ? "double" : "normal");
 101
 102         hc->pci_dev = NULL;
 103         if (m->clock2)
 104                 test_and_set_bit(HFC_CHIP_CLOCK2, &hc->chip);
 105
 106         hc->leds = m->leds;
 107         hc->ledstate = 0xAFFEAFFE;
 108         hc->opticalsupport = m->opticalsupport;
 109
 110         hc->pci_iobase = 0;
 111         hc->pci_membase = 0;
 112         hc->xhfc_membase = NULL;
 113         hc->xhfc_memaddr = NULL;
 114         hc->xhfc_memdata = NULL;
 115
 116         /* set memory access methods */
 117         if (m->io_mode) /* use mode from card config */
 118                 hc->io_mode = m->io_mode;
 119         switch (hc->io_mode) {
 120         case HFC_IO_MODE_EMBSD:
 121                 test_and_set_bit(HFC_CHIP_EMBSD, &hc->chip);
 122                 hc->slots = 128; /* required */
 123                 /* fall through */
 124                 hc->HFC_outb = HFC_outb_embsd;
 125                 hc->HFC_inb = HFC_inb_embsd;
 126                 hc->HFC_inw = HFC_inw_embsd;
 127                 hc->HFC_wait = HFC_wait_embsd;
 128                 hc->read_fifo = read_fifo_embsd;
 129                 hc->write_fifo = write_fifo_embsd;
 130                 hc->xhfc_origmembase = XHFC_MEMBASE + XHFC_OFFSET * hc->id;
 131                 hc->xhfc_membase = (u_char *)ioremap(hc->xhfc_origmembase,
 132                                                      XHFC_MEMSIZE);
 133                 if (!hc->xhfc_membase) {
 134                         printk(KERN_WARNING
 135                                "HFC-multi: failed to remap xhfc address space. "
 136                                "(internal error)\n");
 137                         return -EIO;
 138                 }
 139                 hc->xhfc_memaddr = (u_long *)(hc->xhfc_membase + 4);
 140                 hc->xhfc_memdata = (u_long *)(hc->xhfc_membase);
 141                 printk(KERN_INFO
 142                        "HFC-multi: xhfc_membase:%#lx xhfc_origmembase:%#lx "
 143                        "xhfc_memaddr:%#lx xhfc_memdata:%#lx\n",
 144                        (u_long)hc->xhfc_membase, hc->xhfc_origmembase,
 145                        (u_long)hc->xhfc_memaddr, (u_long)hc->xhfc_memdata);
 146                 break;
 147         default:
 148                 printk(KERN_WARNING "HFC-multi: Invalid IO mode.\n");
 149                 return -EIO;
 150         }
 151
 152         /* Prepare the MPC8XX PortA 10 as output (address/data selector) */
 153         hc->immap = (struct immap *)(IMAP_ADDR);
 154         hc->immap->im_ioport.iop_papar &= ~(PA_XHFC_A0);
 155         hc->immap->im_ioport.iop_paodr &= ~(PA_XHFC_A0);
 156         hc->immap->im_ioport.iop_padir |=   PA_XHFC_A0;
 157
 158         /* Prepare the MPC8xx PortB __X__ as input (ISDN__X__IRQ) */
 159         hc->pb_irqmsk = (PB_XHFC_IRQ1 << hc->id);
 160         hc->immap->im_cpm.cp_pbpar &= ~(hc->pb_irqmsk);
 161         hc->immap->im_cpm.cp_pbodr &= ~(hc->pb_irqmsk);
 162         hc->immap->im_cpm.cp_pbdir &= ~(hc->pb_irqmsk);
 163
 164         /* At this point the needed config is done */
 165         /* fifos are still not enabled */
 166         return 0;
 167 }