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 } 168