Linux-2.6.12-rc2v2.6.12-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, 306 insertions, 0 deletions

diff --git a/drivers/isdn/hisax/isurf.c b/drivers/isdn/hisax/isurf.c
new file mode 100644
index 000000000000..af5171da7345
--- /dev/null
+++ b/drivers/isdn/hisax/isurf.c
@@ -0,0 +1,306 @@
+/* $Id: isurf.c,v 1.12.2.4 2004/01/13 21:46:03 keil Exp $
+ *
+ * low level stuff for Siemens I-Surf/I-Talk cards
+ *
+ * Author       Karsten Keil
+ * Copyright    by Karsten Keil      <keil@isdn4linux.de>
+ * 
+ * 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 "isar.h"
+#include "isdnl1.h"
+#include <linux/isapnp.h>
+
+extern const char *CardType[];
+
+static const char *ISurf_revision = "$Revision: 1.12.2.4 $";
+
+#define byteout(addr,val) outb(val,addr)
+#define bytein(addr) inb(addr)
+
+#define ISURF_ISAR_RESET        1
+#define ISURF_ISAC_RESET        2
+#define ISURF_ISAR_EA           4
+#define ISURF_ARCOFI_RESET      8
+#define ISURF_RESET (ISURF_ISAR_RESET | ISURF_ISAC_RESET | ISURF_ARCOFI_RESET)
+
+#define ISURF_ISAR_OFFSET       0
+#define ISURF_ISAC_OFFSET       0x100
+#define ISURF_IOMEM_SIZE        0x400
+/* Interface functions */
+
+static u_char
+ReadISAC(struct IsdnCardState *cs, u_char offset)
+{
+        return (readb(cs->hw.isurf.isac + offset));
+}
+
+static void
+WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
+{
+        writeb(value, cs->hw.isurf.isac + offset); mb();
+}
+
+static void
+ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
+{
+        register int i;
+        for (i = 0; i < size; i++)
+                data[i] = readb(cs->hw.isurf.isac);
+}
+
+static void
+WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
+{
+        register int i;
+        for (i = 0; i < size; i++){
+                writeb(data[i], cs->hw.isurf.isac);mb();
+        }
+}
+
+/* ISAR access routines
+ * mode = 0 access with IRQ on
+ * mode = 1 access with IRQ off
+ * mode = 2 access with IRQ off and using last offset
+ */
+  
+static u_char
+ReadISAR(struct IsdnCardState *cs, int mode, u_char offset)
+{       
+        return(readb(cs->hw.isurf.isar + offset));
+}
+
+static void
+WriteISAR(struct IsdnCardState *cs, int mode, u_char offset, u_char value)
+{
+        writeb(value, cs->hw.isurf.isar + offset);mb();
+}
+
+static irqreturn_t
+isurf_interrupt(int intno, void *dev_id, struct pt_regs *regs)
+{
+        struct IsdnCardState *cs = dev_id;
+        u_char val;
+        int cnt = 5;
+        u_long flags;
+
+        spin_lock_irqsave(&cs->lock, flags);
+        val = readb(cs->hw.isurf.isar + ISAR_IRQBIT);
+      Start_ISAR:
+        if (val & ISAR_IRQSTA)
+                isar_int_main(cs);
+        val = readb(cs->hw.isurf.isac + ISAC_ISTA);
+      Start_ISAC:
+        if (val)
+                isac_interrupt(cs, val);
+        val = readb(cs->hw.isurf.isar + ISAR_IRQBIT);
+        if ((val & ISAR_IRQSTA) && --cnt) {
+                if (cs->debug & L1_DEB_HSCX)
+                        debugl1(cs, "ISAR IntStat after IntRoutine");
+                goto Start_ISAR;
+        }
+        val = readb(cs->hw.isurf.isac + ISAC_ISTA);
+        if (val && --cnt) {
+                if (cs->debug & L1_DEB_ISAC)
+                        debugl1(cs, "ISAC IntStat after IntRoutine");
+                goto Start_ISAC;
+        }
+        if (!cnt)
+                printk(KERN_WARNING "ISurf IRQ LOOP\n");
+
+        writeb(0, cs->hw.isurf.isar + ISAR_IRQBIT); mb();
+        writeb(0xFF, cs->hw.isurf.isac + ISAC_MASK);mb();
+        writeb(0, cs->hw.isurf.isac + ISAC_MASK);mb();
+        writeb(ISAR_IRQMSK, cs->hw.isurf.isar + ISAR_IRQBIT); mb();
+        spin_unlock_irqrestore(&cs->lock, flags);
+        return IRQ_HANDLED;
+}
+
+void
+release_io_isurf(struct IsdnCardState *cs)
+{
+        release_region(cs->hw.isurf.reset, 1);
+        iounmap(cs->hw.isurf.isar);
+        release_mem_region(cs->hw.isurf.phymem, ISURF_IOMEM_SIZE);
+}
+
+static void
+reset_isurf(struct IsdnCardState *cs, u_char chips)
+{
+        printk(KERN_INFO "ISurf: resetting card\n");
+
+        byteout(cs->hw.isurf.reset, chips); /* Reset On */
+        mdelay(10);
+        byteout(cs->hw.isurf.reset, ISURF_ISAR_EA); /* Reset Off */
+        mdelay(10);
+}
+
+static int
+ISurf_card_msg(struct IsdnCardState *cs, int mt, void *arg)
+{
+        u_long flags;
+
+        switch (mt) {
+                case CARD_RESET:
+                        spin_lock_irqsave(&cs->lock, flags);
+                        reset_isurf(cs, ISURF_RESET);
+                        spin_unlock_irqrestore(&cs->lock, flags);
+                        return(0);
+                case CARD_RELEASE:
+                        release_io_isurf(cs);
+                        return(0);
+                case CARD_INIT:
+                        spin_lock_irqsave(&cs->lock, flags);
+                        reset_isurf(cs, ISURF_RESET);
+                        clear_pending_isac_ints(cs);
+                        writeb(0, cs->hw.isurf.isar+ISAR_IRQBIT);mb();
+                        initisac(cs);
+                        initisar(cs);
+                        /* Reenable ISAC IRQ */
+                        cs->writeisac(cs, ISAC_MASK, 0);
+                        /* RESET Receiver and Transmitter */
+                        cs->writeisac(cs, ISAC_CMDR, 0x41);
+                        spin_unlock_irqrestore(&cs->lock, flags);
+                        return(0);
+                case CARD_TEST:
+                        return(0);
+        }
+        return(0);
+}
+
+static int
+isurf_auxcmd(struct IsdnCardState *cs, isdn_ctrl *ic) {
+        int ret;
+        u_long flags;
+
+        if ((ic->command == ISDN_CMD_IOCTL) && (ic->arg == 9)) {
+                ret = isar_auxcmd(cs, ic);
+                spin_lock_irqsave(&cs->lock, flags);
+                if (!ret) {
+                        reset_isurf(cs, ISURF_ISAR_EA | ISURF_ISAC_RESET |
+                                ISURF_ARCOFI_RESET);
+                        initisac(cs);
+                        cs->writeisac(cs, ISAC_MASK, 0);
+                        cs->writeisac(cs, ISAC_CMDR, 0x41);
+                }
+                spin_unlock_irqrestore(&cs->lock, flags);
+                return(ret);
+        }
+        return(isar_auxcmd(cs, ic));
+}
+
+#ifdef __ISAPNP__
+static struct pnp_card *pnp_c __initdata = NULL;
+#endif
+
+int __init
+setup_isurf(struct IsdnCard *card)
+{
+        int ver;
+        struct IsdnCardState *cs = card->cs;
+        char tmp[64];
+
+        strcpy(tmp, ISurf_revision);
+        printk(KERN_INFO "HiSax: ISurf driver Rev. %s\n", HiSax_getrev(tmp));
+        
+        if (cs->typ != ISDN_CTYPE_ISURF)
+                return(0);
+        if (card->para[1] && card->para[2]) {
+                cs->hw.isurf.reset = card->para[1];
+                cs->hw.isurf.phymem = card->para[2];
+                cs->irq = card->para[0];
+        } else {
+#ifdef __ISAPNP__
+                if (isapnp_present()) {
+                        struct pnp_dev *pnp_d = NULL;
+                        int err;
+
+                        cs->subtyp = 0;
+                        if ((pnp_c = pnp_find_card(
+                                ISAPNP_VENDOR('S', 'I', 'E'),
+                                ISAPNP_FUNCTION(0x0010), pnp_c))) {
+                                if (!(pnp_d = pnp_find_dev(pnp_c,
+                                        ISAPNP_VENDOR('S', 'I', 'E'),
+                                        ISAPNP_FUNCTION(0x0010), pnp_d))) {
+                                        printk(KERN_ERR "ISurfPnP: PnP error card found, no device\n");
+                                        return (0);
+                                }
+                                pnp_disable_dev(pnp_d);
+                                err = pnp_activate_dev(pnp_d);
+                                cs->hw.isurf.reset = pnp_port_start(pnp_d, 0);
+                                cs->hw.isurf.phymem = pnp_mem_start(pnp_d, 1);
+                                cs->irq = pnp_irq(pnp_d, 0);
+                                if (!cs->irq || !cs->hw.isurf.reset || !cs->hw.isurf.phymem) {
+                                        printk(KERN_ERR "ISurfPnP:some resources are missing %d/%x/%lx\n",
+                                                cs->irq, cs->hw.isurf.reset, cs->hw.isurf.phymem);
+                                        pnp_disable_dev(pnp_d);
+                                        return(0);
+                                }
+                        } else {
+                                printk(KERN_INFO "ISurfPnP: no ISAPnP card found\n");
+                                return(0);
+                        }
+                } else {
+                        printk(KERN_INFO "ISurfPnP: no ISAPnP bus found\n");
+                        return(0);
+                }
+#else
+                printk(KERN_WARNING "HiSax: %s port/mem not set\n",
+                        CardType[card->typ]);
+                return (0);
+#endif
+        }
+        if (!request_region(cs->hw.isurf.reset, 1, "isurf isdn")) {
+                printk(KERN_WARNING
+                        "HiSax: %s config port %x already in use\n",
+                        CardType[card->typ],
+                        cs->hw.isurf.reset);
+                        return (0);
+        }
+        if (!request_region(cs->hw.isurf.phymem, ISURF_IOMEM_SIZE, "isurf iomem")) {
+                printk(KERN_WARNING
+                        "HiSax: %s memory region %lx-%lx already in use\n",
+                        CardType[card->typ],
+                        cs->hw.isurf.phymem,
+                        cs->hw.isurf.phymem + ISURF_IOMEM_SIZE);
+                release_region(cs->hw.isurf.reset, 1);
+                return (0);
+        }
+        cs->hw.isurf.isar = ioremap(cs->hw.isurf.phymem, ISURF_IOMEM_SIZE);
+        cs->hw.isurf.isac = cs->hw.isurf.isar + ISURF_ISAC_OFFSET;
+        printk(KERN_INFO
+               "ISurf: defined at 0x%x 0x%lx IRQ %d\n",
+               cs->hw.isurf.reset,
+               cs->hw.isurf.phymem,
+               cs->irq);
+
+        setup_isac(cs);
+        cs->cardmsg = &ISurf_card_msg;
+        cs->irq_func = &isurf_interrupt;
+        cs->auxcmd = &isurf_auxcmd;
+        cs->readisac = &ReadISAC;
+        cs->writeisac = &WriteISAC;
+        cs->readisacfifo = &ReadISACfifo;
+        cs->writeisacfifo = &WriteISACfifo;
+        cs->bcs[0].hw.isar.reg = &cs->hw.isurf.isar_r;
+        cs->bcs[1].hw.isar.reg = &cs->hw.isurf.isar_r;
+        test_and_set_bit(HW_ISAR, &cs->HW_Flags);
+        ISACVersion(cs, "ISurf:");
+        cs->BC_Read_Reg = &ReadISAR;
+        cs->BC_Write_Reg = &WriteISAR;
+        cs->BC_Send_Data = &isar_fill_fifo;
+        ver = ISARVersion(cs, "ISurf:");
+        if (ver < 0) {
+                printk(KERN_WARNING
+                        "ISurf: wrong ISAR version (ret = %d)\n", ver);
+                release_io_isurf(cs);
+                return (0);
+        }
+        return (1);
+}