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/* SPDX-License-Identifier: GPL-2.0 */
/*
* For License see notice in hfc_multi.c
*
* special IO and init functions for the embedded XHFC board
* from Speech Design
*
*/
#include <asm/cpm1.h>
/* Change this to the value used by your board */
#ifndef IMAP_ADDR
#define IMAP_ADDR 0xFFF00000
#endif
static void
#ifdef HFC_REGISTER_DEBUG
HFC_outb_embsd(struct hfc_multi *hc, u_char reg, u_char val,
const char *function, int line)
#else
HFC_outb_embsd(struct hfc_multi *hc, u_char reg, u_char val)
#endif
{
hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
writeb(reg, hc->xhfc_memaddr);
hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
writeb(val, hc->xhfc_memdata);
}
static u_char
#ifdef HFC_REGISTER_DEBUG
HFC_inb_embsd(struct hfc_multi *hc, u_char reg, const char *function, int line)
#else
HFC_inb_embsd(struct hfc_multi *hc, u_char reg)
#endif
{
hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
writeb(reg, hc->xhfc_memaddr);
hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
return readb(hc->xhfc_memdata);
}
static u_short
#ifdef HFC_REGISTER_DEBUG
HFC_inw_embsd(struct hfc_multi *hc, u_char reg, const char *function, int line)
#else
HFC_inw_embsd(struct hfc_multi *hc, u_char reg)
#endif
{
hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
writeb(reg, hc->xhfc_memaddr);
hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
return readb(hc->xhfc_memdata);
}
static void
#ifdef HFC_REGISTER_DEBUG
HFC_wait_embsd(struct hfc_multi *hc, const char *function, int line)
#else
HFC_wait_embsd(struct hfc_multi *hc)
#endif
{
hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
writeb(R_STATUS, hc->xhfc_memaddr);
hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
while (readb(hc->xhfc_memdata) & V_BUSY)
cpu_relax();
}
/* write fifo data (EMBSD) */
void
write_fifo_embsd(struct hfc_multi *hc, u_char *data, int len)
{
hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
*hc->xhfc_memaddr = A_FIFO_DATA0;
hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
while (len) {
*hc->xhfc_memdata = *data;
data++;
len--;
}
}
/* read fifo data (EMBSD) */
void
read_fifo_embsd(struct hfc_multi *hc, u_char *data, int len)
{
hc->immap->im_ioport.iop_padat |= PA_XHFC_A0;
*hc->xhfc_memaddr = A_FIFO_DATA0;
hc->immap->im_ioport.iop_padat &= ~(PA_XHFC_A0);
while (len) {
*data = (u_char)(*hc->xhfc_memdata);
data++;
len--;
}
}
static int
setup_embedded(struct hfc_multi *hc, struct hm_map *m)
{
printk(KERN_INFO
"HFC-multi: card manufacturer: '%s' card name: '%s' clock: %s\n",
m->vendor_name, m->card_name, m->clock2 ? "double" : "normal");
hc->pci_dev = NULL;
if (m->clock2)
test_and_set_bit(HFC_CHIP_CLOCK2, &hc->chip);
hc->leds = m->leds;
hc->ledstate = 0xAFFEAFFE;
hc->opticalsupport = m->opticalsupport;
hc->pci_iobase = 0;
hc->pci_membase = 0;
hc->xhfc_membase = NULL;
hc->xhfc_memaddr = NULL;
hc->xhfc_memdata = NULL;
/* set memory access methods */
if (m->io_mode) /* use mode from card config */
hc->io_mode = m->io_mode;
switch (hc->io_mode) {
case HFC_IO_MODE_EMBSD:
test_and_set_bit(HFC_CHIP_EMBSD, &hc->chip);
hc->slots = 128; /* required */
/* fall through */
hc->HFC_outb = HFC_outb_embsd;
hc->HFC_inb = HFC_inb_embsd;
hc->HFC_inw = HFC_inw_embsd;
hc->HFC_wait = HFC_wait_embsd;
hc->read_fifo = read_fifo_embsd;
hc->write_fifo = write_fifo_embsd;
hc->xhfc_origmembase = XHFC_MEMBASE + XHFC_OFFSET * hc->id;
hc->xhfc_membase = (u_char *)ioremap(hc->xhfc_origmembase,
XHFC_MEMSIZE);
if (!hc->xhfc_membase) {
printk(KERN_WARNING
"HFC-multi: failed to remap xhfc address space. "
"(internal error)\n");
return -EIO;
}
hc->xhfc_memaddr = (u_long *)(hc->xhfc_membase + 4);
hc->xhfc_memdata = (u_long *)(hc->xhfc_membase);
printk(KERN_INFO
"HFC-multi: xhfc_membase:%#lx xhfc_origmembase:%#lx "
"xhfc_memaddr:%#lx xhfc_memdata:%#lx\n",
(u_long)hc->xhfc_membase, hc->xhfc_origmembase,
(u_long)hc->xhfc_memaddr, (u_long)hc->xhfc_memdata);
break;
default:
printk(KERN_WARNING "HFC-multi: Invalid IO mode.\n");
return -EIO;
}
/* Prepare the MPC8XX PortA 10 as output (address/data selector) */
hc->immap = (struct immap *)(IMAP_ADDR);
hc->immap->im_ioport.iop_papar &= ~(PA_XHFC_A0);
hc->immap->im_ioport.iop_paodr &= ~(PA_XHFC_A0);
hc->immap->im_ioport.iop_padir |= PA_XHFC_A0;
/* Prepare the MPC8xx PortB __X__ as input (ISDN__X__IRQ) */
hc->pb_irqmsk = (PB_XHFC_IRQ1 << hc->id);
hc->immap->im_cpm.cp_pbpar &= ~(hc->pb_irqmsk);
hc->immap->im_cpm.cp_pbodr &= ~(hc->pb_irqmsk);
hc->immap->im_cpm.cp_pbdir &= ~(hc->pb_irqmsk);
/* At this point the needed config is done */
/* fifos are still not enabled */
return 0;
}
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