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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/isdn/hisax/isurf.c | |
download | kernel_samsung_smdk4412-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip kernel_samsung_smdk4412-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz kernel_samsung_smdk4412-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2 |
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!
Diffstat (limited to 'drivers/isdn/hisax/isurf.c')
-rw-r--r-- | drivers/isdn/hisax/isurf.c | 306 |
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 0000000..af5171d --- /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); +} |