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167 lines
4.6 KiB
167 lines
4.6 KiB
/* 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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