268 lines
6.3 KiB
C
268 lines
6.3 KiB
C
/* $Id: sportster.c,v 1.16.2.4 2004/01/13 23:48:39 keil Exp $
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*
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* low level stuff for USR Sportster internal TA
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*
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* Author Karsten Keil
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* Copyright by Karsten Keil <keil@isdn4linux.de>
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*
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* This software may be used and distributed according to the terms
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* of the GNU General Public License, incorporated herein by reference.
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*
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* Thanks to Christian "naddy" Weisgerber (3Com, US Robotics) for documentation
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*
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*
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*/
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#include <linux/init.h>
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#include "hisax.h"
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#include "isac.h"
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#include "hscx.h"
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#include "isdnl1.h"
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static const char *sportster_revision = "$Revision: 1.16.2.4 $";
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#define byteout(addr, val) outb(val, addr)
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#define bytein(addr) inb(addr)
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#define SPORTSTER_ISAC 0xC000
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#define SPORTSTER_HSCXA 0x0000
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#define SPORTSTER_HSCXB 0x4000
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#define SPORTSTER_RES_IRQ 0x8000
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#define SPORTSTER_RESET 0x80
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#define SPORTSTER_INTE 0x40
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static inline int
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calc_off(unsigned int base, unsigned int off)
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{
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return (base + ((off & 0xfc) << 8) + ((off & 3) << 1));
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}
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static inline void
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read_fifo(unsigned int adr, u_char *data, int size)
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{
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insb(adr, data, size);
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}
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static void
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write_fifo(unsigned int adr, u_char *data, int size)
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{
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outsb(adr, data, size);
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}
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/* Interface functions */
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static u_char
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ReadISAC(struct IsdnCardState *cs, u_char offset)
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{
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return (bytein(calc_off(cs->hw.spt.isac, offset)));
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}
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static void
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WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
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{
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byteout(calc_off(cs->hw.spt.isac, offset), value);
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}
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static void
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ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
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{
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read_fifo(cs->hw.spt.isac, data, size);
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}
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static void
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WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
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{
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write_fifo(cs->hw.spt.isac, data, size);
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}
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static u_char
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ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
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{
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return (bytein(calc_off(cs->hw.spt.hscx[hscx], offset)));
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}
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static void
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WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
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{
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byteout(calc_off(cs->hw.spt.hscx[hscx], offset), value);
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}
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/*
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* fast interrupt HSCX stuff goes here
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*/
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#define READHSCX(cs, nr, reg) bytein(calc_off(cs->hw.spt.hscx[nr], reg))
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#define WRITEHSCX(cs, nr, reg, data) byteout(calc_off(cs->hw.spt.hscx[nr], reg), data)
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#define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo(cs->hw.spt.hscx[nr], ptr, cnt)
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#define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo(cs->hw.spt.hscx[nr], ptr, cnt)
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#include "hscx_irq.c"
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static irqreturn_t
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sportster_interrupt(int intno, void *dev_id)
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{
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struct IsdnCardState *cs = dev_id;
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u_char val;
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u_long flags;
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spin_lock_irqsave(&cs->lock, flags);
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val = READHSCX(cs, 1, HSCX_ISTA);
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Start_HSCX:
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if (val)
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hscx_int_main(cs, val);
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val = ReadISAC(cs, ISAC_ISTA);
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Start_ISAC:
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if (val)
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isac_interrupt(cs, val);
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val = READHSCX(cs, 1, HSCX_ISTA);
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if (val) {
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if (cs->debug & L1_DEB_HSCX)
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debugl1(cs, "HSCX IntStat after IntRoutine");
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goto Start_HSCX;
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}
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val = ReadISAC(cs, ISAC_ISTA);
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if (val) {
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if (cs->debug & L1_DEB_ISAC)
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debugl1(cs, "ISAC IntStat after IntRoutine");
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goto Start_ISAC;
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}
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/* get a new irq impulse if there any pending */
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bytein(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ + 1);
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spin_unlock_irqrestore(&cs->lock, flags);
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return IRQ_HANDLED;
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}
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static void
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release_io_sportster(struct IsdnCardState *cs)
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{
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int i, adr;
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byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, 0);
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for (i = 0; i < 64; i++) {
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adr = cs->hw.spt.cfg_reg + i * 1024;
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release_region(adr, 8);
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}
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}
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static void
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reset_sportster(struct IsdnCardState *cs)
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{
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cs->hw.spt.res_irq |= SPORTSTER_RESET; /* Reset On */
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byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq);
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mdelay(10);
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cs->hw.spt.res_irq &= ~SPORTSTER_RESET; /* Reset Off */
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byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq);
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mdelay(10);
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}
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static int
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Sportster_card_msg(struct IsdnCardState *cs, int mt, void *arg)
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{
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u_long flags;
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switch (mt) {
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case CARD_RESET:
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spin_lock_irqsave(&cs->lock, flags);
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reset_sportster(cs);
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spin_unlock_irqrestore(&cs->lock, flags);
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return (0);
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case CARD_RELEASE:
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release_io_sportster(cs);
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return (0);
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case CARD_INIT:
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spin_lock_irqsave(&cs->lock, flags);
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reset_sportster(cs);
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inithscxisac(cs, 1);
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cs->hw.spt.res_irq |= SPORTSTER_INTE; /* IRQ On */
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byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq);
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inithscxisac(cs, 2);
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spin_unlock_irqrestore(&cs->lock, flags);
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return (0);
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case CARD_TEST:
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return (0);
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}
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return (0);
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}
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static int get_io_range(struct IsdnCardState *cs)
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{
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int i, j, adr;
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for (i = 0; i < 64; i++) {
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adr = cs->hw.spt.cfg_reg + i * 1024;
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if (!request_region(adr, 8, "sportster")) {
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printk(KERN_WARNING "HiSax: USR Sportster config port "
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"%x-%x already in use\n",
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adr, adr + 8);
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break;
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}
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}
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if (i == 64)
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return (1);
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else {
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for (j = 0; j < i; j++) {
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adr = cs->hw.spt.cfg_reg + j * 1024;
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release_region(adr, 8);
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}
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return (0);
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}
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}
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int setup_sportster(struct IsdnCard *card)
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{
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struct IsdnCardState *cs = card->cs;
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char tmp[64];
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strcpy(tmp, sportster_revision);
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printk(KERN_INFO "HiSax: USR Sportster driver Rev. %s\n", HiSax_getrev(tmp));
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if (cs->typ != ISDN_CTYPE_SPORTSTER)
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return (0);
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cs->hw.spt.cfg_reg = card->para[1];
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cs->irq = card->para[0];
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if (!get_io_range(cs))
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return (0);
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cs->hw.spt.isac = cs->hw.spt.cfg_reg + SPORTSTER_ISAC;
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cs->hw.spt.hscx[0] = cs->hw.spt.cfg_reg + SPORTSTER_HSCXA;
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cs->hw.spt.hscx[1] = cs->hw.spt.cfg_reg + SPORTSTER_HSCXB;
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switch (cs->irq) {
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case 5: cs->hw.spt.res_irq = 1;
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break;
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case 7: cs->hw.spt.res_irq = 2;
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break;
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case 10:cs->hw.spt.res_irq = 3;
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break;
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case 11:cs->hw.spt.res_irq = 4;
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break;
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case 12:cs->hw.spt.res_irq = 5;
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break;
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case 14:cs->hw.spt.res_irq = 6;
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break;
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case 15:cs->hw.spt.res_irq = 7;
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break;
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default:release_io_sportster(cs);
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printk(KERN_WARNING "Sportster: wrong IRQ\n");
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return (0);
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}
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printk(KERN_INFO "HiSax: USR Sportster config irq:%d cfg:0x%X\n",
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cs->irq, cs->hw.spt.cfg_reg);
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setup_isac(cs);
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cs->readisac = &ReadISAC;
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cs->writeisac = &WriteISAC;
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cs->readisacfifo = &ReadISACfifo;
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cs->writeisacfifo = &WriteISACfifo;
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cs->BC_Read_Reg = &ReadHSCX;
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cs->BC_Write_Reg = &WriteHSCX;
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cs->BC_Send_Data = &hscx_fill_fifo;
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cs->cardmsg = &Sportster_card_msg;
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cs->irq_func = &sportster_interrupt;
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ISACVersion(cs, "Sportster:");
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if (HscxVersion(cs, "Sportster:")) {
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printk(KERN_WARNING
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"Sportster: wrong HSCX versions check IO address\n");
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release_io_sportster(cs);
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return (0);
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}
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return (1);
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}
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