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path: root/drivers/isdn/hisax/mic.c
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Diffstat (limited to 'drivers/isdn/hisax/mic.c')
-rw-r--r--drivers/isdn/hisax/mic.c235
1 files changed, 235 insertions, 0 deletions
diff --git a/drivers/isdn/hisax/mic.c b/drivers/isdn/hisax/mic.c
new file mode 100644
index 000000000..93398676f
--- /dev/null
+++ b/drivers/isdn/hisax/mic.c
@@ -0,0 +1,235 @@
+/* $Id: mic.c,v 1.12.2.4 2004/01/13 23:48:39 keil Exp $
+ *
+ * low level stuff for mic cards
+ *
+ * Author Stephan von Krawczynski
+ * Copyright by Stephan von Krawczynski <skraw@ithnet.com>
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ */
+
+#include <linux/init.h>
+#include "hisax.h"
+#include "isac.h"
+#include "hscx.h"
+#include "isdnl1.h"
+
+static const char *mic_revision = "$Revision: 1.12.2.4 $";
+
+#define byteout(addr, val) outb(val, addr)
+#define bytein(addr) inb(addr)
+
+#define MIC_ISAC 2
+#define MIC_HSCX 1
+#define MIC_ADR 7
+
+/* CARD_ADR (Write) */
+#define MIC_RESET 0x3 /* same as DOS driver */
+
+static inline u_char
+readreg(unsigned int ale, unsigned int adr, u_char off)
+{
+ register u_char ret;
+
+ byteout(ale, off);
+ ret = bytein(adr);
+ return (ret);
+}
+
+static inline void
+readfifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
+{
+ byteout(ale, off);
+ insb(adr, data, size);
+}
+
+
+static inline void
+writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
+{
+ byteout(ale, off);
+ byteout(adr, data);
+}
+
+static inline void
+writefifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
+{
+ byteout(ale, off);
+ outsb(adr, data, size);
+}
+
+/* Interface functions */
+
+static u_char
+ReadISAC(struct IsdnCardState *cs, u_char offset)
+{
+ return (readreg(cs->hw.mic.adr, cs->hw.mic.isac, offset));
+}
+
+static void
+WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
+{
+ writereg(cs->hw.mic.adr, cs->hw.mic.isac, offset, value);
+}
+
+static void
+ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
+{
+ readfifo(cs->hw.mic.adr, cs->hw.mic.isac, 0, data, size);
+}
+
+static void
+WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
+{
+ writefifo(cs->hw.mic.adr, cs->hw.mic.isac, 0, data, size);
+}
+
+static u_char
+ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
+{
+ return (readreg(cs->hw.mic.adr,
+ cs->hw.mic.hscx, offset + (hscx ? 0x40 : 0)));
+}
+
+static void
+WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
+{
+ writereg(cs->hw.mic.adr,
+ cs->hw.mic.hscx, offset + (hscx ? 0x40 : 0), value);
+}
+
+/*
+ * fast interrupt HSCX stuff goes here
+ */
+
+#define READHSCX(cs, nr, reg) readreg(cs->hw.mic.adr, \
+ cs->hw.mic.hscx, reg + (nr ? 0x40 : 0))
+#define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.mic.adr, \
+ cs->hw.mic.hscx, reg + (nr ? 0x40 : 0), data)
+
+#define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.mic.adr, \
+ cs->hw.mic.hscx, (nr ? 0x40 : 0), ptr, cnt)
+
+#define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.mic.adr, \
+ cs->hw.mic.hscx, (nr ? 0x40 : 0), ptr, cnt)
+
+#include "hscx_irq.c"
+
+static irqreturn_t
+mic_interrupt(int intno, void *dev_id)
+{
+ struct IsdnCardState *cs = dev_id;
+ u_char val;
+ u_long flags;
+
+ spin_lock_irqsave(&cs->lock, flags);
+ val = readreg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_ISTA + 0x40);
+Start_HSCX:
+ if (val)
+ hscx_int_main(cs, val);
+ val = readreg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_ISTA);
+Start_ISAC:
+ if (val)
+ isac_interrupt(cs, val);
+ val = readreg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_ISTA + 0x40);
+ if (val) {
+ if (cs->debug & L1_DEB_HSCX)
+ debugl1(cs, "HSCX IntStat after IntRoutine");
+ goto Start_HSCX;
+ }
+ val = readreg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_ISTA);
+ if (val) {
+ if (cs->debug & L1_DEB_ISAC)
+ debugl1(cs, "ISAC IntStat after IntRoutine");
+ goto Start_ISAC;
+ }
+ writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK, 0xFF);
+ writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK + 0x40, 0xFF);
+ writereg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_MASK, 0xFF);
+ writereg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_MASK, 0x0);
+ writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK, 0x0);
+ writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK + 0x40, 0x0);
+ spin_unlock_irqrestore(&cs->lock, flags);
+ return IRQ_HANDLED;
+}
+
+static void
+release_io_mic(struct IsdnCardState *cs)
+{
+ int bytecnt = 8;
+
+ if (cs->hw.mic.cfg_reg)
+ release_region(cs->hw.mic.cfg_reg, bytecnt);
+}
+
+static int
+mic_card_msg(struct IsdnCardState *cs, int mt, void *arg)
+{
+ u_long flags;
+
+ switch (mt) {
+ case CARD_RESET:
+ return (0);
+ case CARD_RELEASE:
+ release_io_mic(cs);
+ return (0);
+ case CARD_INIT:
+ spin_lock_irqsave(&cs->lock, flags);
+ inithscx(cs); /* /RTSA := ISAC RST */
+ inithscxisac(cs, 3);
+ spin_unlock_irqrestore(&cs->lock, flags);
+ return (0);
+ case CARD_TEST:
+ return (0);
+ }
+ return (0);
+}
+
+int setup_mic(struct IsdnCard *card)
+{
+ int bytecnt;
+ struct IsdnCardState *cs = card->cs;
+ char tmp[64];
+
+ strcpy(tmp, mic_revision);
+ printk(KERN_INFO "HiSax: mic driver Rev. %s\n", HiSax_getrev(tmp));
+ if (cs->typ != ISDN_CTYPE_MIC)
+ return (0);
+
+ bytecnt = 8;
+ cs->hw.mic.cfg_reg = card->para[1];
+ cs->irq = card->para[0];
+ cs->hw.mic.adr = cs->hw.mic.cfg_reg + MIC_ADR;
+ cs->hw.mic.isac = cs->hw.mic.cfg_reg + MIC_ISAC;
+ cs->hw.mic.hscx = cs->hw.mic.cfg_reg + MIC_HSCX;
+
+ if (!request_region(cs->hw.mic.cfg_reg, bytecnt, "mic isdn")) {
+ printk(KERN_WARNING
+ "HiSax: ith mic config port %x-%x already in use\n",
+ cs->hw.mic.cfg_reg,
+ cs->hw.mic.cfg_reg + bytecnt);
+ return (0);
+ }
+ printk(KERN_INFO "mic: defined at 0x%x IRQ %d\n",
+ cs->hw.mic.cfg_reg, cs->irq);
+ setup_isac(cs);
+ cs->readisac = &ReadISAC;
+ cs->writeisac = &WriteISAC;
+ cs->readisacfifo = &ReadISACfifo;
+ cs->writeisacfifo = &WriteISACfifo;
+ cs->BC_Read_Reg = &ReadHSCX;
+ cs->BC_Write_Reg = &WriteHSCX;
+ cs->BC_Send_Data = &hscx_fill_fifo;
+ cs->cardmsg = &mic_card_msg;
+ cs->irq_func = &mic_interrupt;
+ ISACVersion(cs, "mic:");
+ if (HscxVersion(cs, "mic:")) {
+ printk(KERN_WARNING
+ "mic: wrong HSCX versions check IO address\n");
+ release_io_mic(cs);
+ return (0);
+ }
+ return (1);
+}
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