drivers/isdn/hardware/mISDN/hfc_multi_8xx.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * For License see notice in hfc_multi.c
   4  *
   5  * special IO and init functions for the embedded XHFC board
   6  * from Speech Design
   7  *
   8  */
   9
  10 #include <asm/cpm1.h>
  11
  12 /* Change this to the value used by your board */
  13 #ifndef IMAP_ADDR
  14 #define IMAP_ADDR       0xFFF00000
  15 #endif
  16
  17 static void
  18 #ifdef HFC_REGISTER_DEBUG
  19 HFC_outb_embsd(struct hfc_multi *hc, u_char reg, u_char val,
  20                const char *function, int line)
  21 #else
  22         HFC_outb_embsd(struct hfc_multi *hc, u_char reg, u_char val)
  23 #endif
  24 {
  25         hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
  26         writeb(reg, hc->xhfc_memaddr);
  27         hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
  28         writeb(val, hc->xhfc_memdata);
  29 }
  30 static u_char
  31 #ifdef HFC_REGISTER_DEBUG
  32 HFC_inb_embsd(struct hfc_multi *hc, u_char reg, const char *function, int line)
  33 #else
  34         HFC_inb_embsd(struct hfc_multi *hc, u_char reg)
  35 #endif
  36 {
  37         hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
  38         writeb(reg, hc->xhfc_memaddr);
  39         hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
  40         return readb(hc->xhfc_memdata);
  41 }
  42 static u_short
  43 #ifdef HFC_REGISTER_DEBUG
  44 HFC_inw_embsd(struct hfc_multi *hc, u_char reg, const char *function, int line)
  45 #else
  46         HFC_inw_embsd(struct hfc_multi *hc, u_char reg)
  47 #endif
  48 {
  49         hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
  50         writeb(reg, hc->xhfc_memaddr);
  51         hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
  52         return readb(hc->xhfc_memdata);
  53 }
  54 static void
  55 #ifdef HFC_REGISTER_DEBUG
  56 HFC_wait_embsd(struct hfc_multi *hc, const char *function, int line)
  57 #else
  58         HFC_wait_embsd(struct hfc_multi *hc)
  59 #endif
  60 {
  61         hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
  62         writeb(R_STATUS, hc->xhfc_memaddr);
  63         hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
  64         while (readb(hc->xhfc_memdata) & V_BUSY)
  65                 cpu_relax();
  66 }
  67
  68 /* write fifo data (EMBSD) */
  69 void
  70 write_fifo_embsd(struct hfc_multi *hc, u_char *data, int len)
  71 {
  72         hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
  73         *hc->xhfc_memaddr = A_FIFO_DATA0;
  74         hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
  75         while (len) {
  76                 *hc->xhfc_memdata = *data;
  77                 data++;
  78                 len--;
  79         }
  80 }
  81
  82 /* read fifo data (EMBSD) */
  83 void
  84 read_fifo_embsd(struct hfc_multi *hc, u_char *data, int len)
  85 {
  86         hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
  87         *hc->xhfc_memaddr = A_FIFO_DATA0;
  88         hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
  89         while (len) {
  90                 *data = (u_char)(*hc->xhfc_memdata);
  91                 data++;
  92                 len--;
  93         }
  94 }
  95
  96 static int
  97 setup_embedded(struct hfc_multi *hc, struct hm_map *m)
  98 {
  99         printk(KERN_INFO
 100                "HFC-multi: card manufacturer: '%s' card name: '%s' clock: %s\n",
 101                m->vendor_name, m->card_name, m->clock2 ? "double" : "normal");
 102
 103         hc->pci_dev = NULL;
 104         if (m->clock2)
 105                 test_and_set_bit(HFC_CHIP_CLOCK2, &hc->chip);
 106
 107         hc->leds = m->leds;
 108         hc->ledstate = 0xAFFEAFFE;
 109         hc->opticalsupport = m->opticalsupport;
 110
 111         hc->pci_iobase = 0;
 112         hc->pci_membase = 0;
 113         hc->xhfc_membase = NULL;
 114         hc->xhfc_memaddr = NULL;
 115         hc->xhfc_memdata = NULL;
 116
 117         /* set memory access methods */
 118         if (m->io_mode) /* use mode from card config */
 119                 hc->io_mode = m->io_mode;
 120         switch (hc->io_mode) {
 121         case HFC_IO_MODE_EMBSD:
 122                 test_and_set_bit(HFC_CHIP_EMBSD, &hc->chip);
 123                 hc->slots = 128; /* required */
 124                 /* fall through */
 125                 hc->HFC_outb = HFC_outb_embsd;
 126                 hc->HFC_inb = HFC_inb_embsd;
 127                 hc->HFC_inw = HFC_inw_embsd;
 128                 hc->HFC_wait = HFC_wait_embsd;
 129                 hc->read_fifo = read_fifo_embsd;
 130                 hc->write_fifo = write_fifo_embsd;
 131                 hc->xhfc_origmembase = XHFC_MEMBASE + XHFC_OFFSET * hc->id;
 132                 hc->xhfc_membase = (u_char *)ioremap(hc->xhfc_origmembase,
 133                                                      XHFC_MEMSIZE);
 134                 if (!hc->xhfc_membase) {
 135                         printk(KERN_WARNING
 136                                "HFC-multi: failed to remap xhfc address space. "
 137                                "(internal error)\n");
 138                         return -EIO;
 139                 }
 140                 hc->xhfc_memaddr = (u_long *)(hc->xhfc_membase + 4);
 141                 hc->xhfc_memdata = (u_long *)(hc->xhfc_membase);
 142                 printk(KERN_INFO
 143                        "HFC-multi: xhfc_membase:%#lx xhfc_origmembase:%#lx "
 144                        "xhfc_memaddr:%#lx xhfc_memdata:%#lx\n",
 145                        (u_long)hc->xhfc_membase, hc->xhfc_origmembase,
 146                        (u_long)hc->xhfc_memaddr, (u_long)hc->xhfc_memdata);
 147                 break;
 148         default:
 149                 printk(KERN_WARNING "HFC-multi: Invalid IO mode.\n");
 150                 return -EIO;
 151         }
 152
 153         /* Prepare the MPC8XX PortA 10 as output (address/data selector) */
 154         hc->immap = (struct immap *)(IMAP_ADDR);
 155         hc->immap->im_ioport.iop_papar &= ~(PA_XHFC_A0);
 156         hc->immap->im_ioport.iop_paodr &= ~(PA_XHFC_A0);
 157         hc->immap->im_ioport.iop_padir |=   PA_XHFC_A0;
 158
 159         /* Prepare the MPC8xx PortB __X__ as input (ISDN__X__IRQ) */
 160         hc->pb_irqmsk = (PB_XHFC_IRQ1 << hc->id);
 161         hc->immap->im_cpm.cp_pbpar &= ~(hc->pb_irqmsk);
 162         hc->immap->im_cpm.cp_pbodr &= ~(hc->pb_irqmsk);
 163         hc->immap->im_cpm.cp_pbdir &= ~(hc->pb_irqmsk);
 164
 165         /* At this point the needed config is done */
 166         /* fifos are still not enabled */
 167         return 0;
 168 }