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
 17static void
 18#ifdef HFC_REGISTER_DEBUG
 19HFC_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}
 30static u_char
 31#ifdef HFC_REGISTER_DEBUG
 32HFC_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}
 42static u_short
 43#ifdef HFC_REGISTER_DEBUG
 44HFC_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}
 54static void
 55#ifdef HFC_REGISTER_DEBUG
 56HFC_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) */
 69void
 70write_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) */
 83void
 84read_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
 96static int
 97setup_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		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}