Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 239 insertions, 0 deletions

diff --git a/drivers/isdn/hisax/mic.c b/drivers/isdn/hisax/mic.c
new file mode 100644
index 00000000000..3ac4484a488
--- /dev/null
+++ b/drivers/isdn/hisax/mic.c
@@ -0,0 +1,239 @@
+/* $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"
+
+extern const char *CardType[];
+
+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 pt_regs *regs)
+{
+        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;
+}
+
+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 __init
+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: %s config port %x-%x already in use\n",
+                       CardType[card->typ],
+                       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);
+}