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