bkm_a8.c
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上传日期:2013-04-10
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- /* $Id: bkm_a8.c,v 1.1.4.1 2001/11/20 14:19:35 kai Exp $
- *
- * low level stuff for Scitel Quadro (4*S0, passive)
- *
- * Author Roland Klabunde
- * Copyright by Roland Klabunde <R.Klabunde@Berkom.de>
- *
- * This software may be used and distributed according to the terms
- * of the GNU General Public License, incorporated herein by reference.
- *
- */
- #define __NO_VERSION__
- #include <linux/config.h>
- #include <linux/init.h>
- #include "hisax.h"
- #include "isac.h"
- #include "ipac.h"
- #include "hscx.h"
- #include "isdnl1.h"
- #include <linux/pci.h>
- #include "bkm_ax.h"
- #if CONFIG_PCI
- #define ATTEMPT_PCI_REMAPPING /* Required for PLX rev 1 */
- extern const char *CardType[];
- const char sct_quadro_revision[] = "$Revision: 1.1.4.1 $";
- static const char *sct_quadro_subtypes[] =
- {
- "",
- "#1",
- "#2",
- "#3",
- "#4"
- };
- #define wordout(addr,val) outw(val,addr)
- #define wordin(addr) inw(addr)
- static inline u_char
- readreg(unsigned int ale, unsigned int adr, u_char off)
- {
- register u_char ret;
- long flags;
- save_flags(flags);
- cli();
- wordout(ale, off);
- ret = wordin(adr) & 0xFF;
- restore_flags(flags);
- return (ret);
- }
- static inline void
- readfifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
- {
- /* fifo read without cli because it's allready done */
- int i;
- wordout(ale, off);
- for (i = 0; i < size; i++)
- data[i] = wordin(adr) & 0xFF;
- }
- static inline void
- writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
- {
- long flags;
- save_flags(flags);
- cli();
- wordout(ale, off);
- wordout(adr, data);
- restore_flags(flags);
- }
- static inline void
- writefifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
- {
- /* fifo write without cli because it's allready done */
- int i;
- wordout(ale, off);
- for (i = 0; i < size; i++)
- wordout(adr, data[i]);
- }
- /* Interface functions */
- static u_char
- ReadISAC(struct IsdnCardState *cs, u_char offset)
- {
- return (readreg(cs->hw.ax.base, cs->hw.ax.data_adr, offset | 0x80));
- }
- static void
- WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
- {
- writereg(cs->hw.ax.base, cs->hw.ax.data_adr, offset | 0x80, value);
- }
- static void
- ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
- {
- readfifo(cs->hw.ax.base, cs->hw.ax.data_adr, 0x80, data, size);
- }
- static void
- WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
- {
- writefifo(cs->hw.ax.base, cs->hw.ax.data_adr, 0x80, data, size);
- }
- static u_char
- ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
- {
- return (readreg(cs->hw.ax.base, cs->hw.ax.data_adr, offset + (hscx ? 0x40 : 0)));
- }
- static void
- WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
- {
- writereg(cs->hw.ax.base, cs->hw.ax.data_adr, offset + (hscx ? 0x40 : 0), value);
- }
- /* Set the specific ipac to active */
- static void
- set_ipac_active(struct IsdnCardState *cs, u_int active)
- {
- /* set irq mask */
- writereg(cs->hw.ax.base, cs->hw.ax.data_adr, IPAC_MASK,
- active ? 0xc0 : 0xff);
- }
- /*
- * fast interrupt HSCX stuff goes here
- */
- #define READHSCX(cs, nr, reg) readreg(cs->hw.ax.base,
- cs->hw.ax.data_adr, reg + (nr ? 0x40 : 0))
- #define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.ax.base,
- cs->hw.ax.data_adr, reg + (nr ? 0x40 : 0), data)
- #define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.ax.base,
- cs->hw.ax.data_adr, (nr ? 0x40 : 0), ptr, cnt)
- #define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.ax.base,
- cs->hw.ax.data_adr, (nr ? 0x40 : 0), ptr, cnt)
- #include "hscx_irq.c"
- static void
- bkm_interrupt_ipac(int intno, void *dev_id, struct pt_regs *regs)
- {
- struct IsdnCardState *cs = dev_id;
- u_char ista, val, icnt = 5;
- if (!cs) {
- printk(KERN_WARNING "HiSax: Scitel Quadro: Spurious interrupt!n");
- return;
- }
- ista = readreg(cs->hw.ax.base, cs->hw.ax.data_adr, IPAC_ISTA);
- if (!(ista & 0x3f)) /* not this IPAC */
- return;
- Start_IPAC:
- if (cs->debug & L1_DEB_IPAC)
- debugl1(cs, "IPAC ISTA %02X", ista);
- if (ista & 0x0f) {
- val = readreg(cs->hw.ax.base, cs->hw.ax.data_adr, HSCX_ISTA + 0x40);
- if (ista & 0x01)
- val |= 0x01;
- if (ista & 0x04)
- val |= 0x02;
- if (ista & 0x08)
- val |= 0x04;
- if (val) {
- hscx_int_main(cs, val);
- }
- }
- if (ista & 0x20) {
- val = 0xfe & readreg(cs->hw.ax.base, cs->hw.ax.data_adr, ISAC_ISTA | 0x80);
- if (val) {
- isac_interrupt(cs, val);
- }
- }
- if (ista & 0x10) {
- val = 0x01;
- isac_interrupt(cs, val);
- }
- ista = readreg(cs->hw.ax.base, cs->hw.ax.data_adr, IPAC_ISTA);
- if ((ista & 0x3f) && icnt) {
- icnt--;
- goto Start_IPAC;
- }
- if (!icnt)
- printk(KERN_WARNING "HiSax: %s (%s) IRQ LOOPn",
- CardType[cs->typ],
- sct_quadro_subtypes[cs->subtyp]);
- writereg(cs->hw.ax.base, cs->hw.ax.data_adr, IPAC_MASK, 0xFF);
- writereg(cs->hw.ax.base, cs->hw.ax.data_adr, IPAC_MASK, 0xC0);
- }
- void
- release_io_sct_quadro(struct IsdnCardState *cs)
- {
- release_region(cs->hw.ax.base & 0xffffffc0, 128);
- if (cs->subtyp == SCT_1)
- release_region(cs->hw.ax.plx_adr, 64);
- }
- static void
- enable_bkm_int(struct IsdnCardState *cs, unsigned bEnable)
- {
- if (cs->typ == ISDN_CTYPE_SCT_QUADRO) {
- if (bEnable)
- wordout(cs->hw.ax.plx_adr + 0x4C, (wordin(cs->hw.ax.plx_adr + 0x4C) | 0x41));
- else
- wordout(cs->hw.ax.plx_adr + 0x4C, (wordin(cs->hw.ax.plx_adr + 0x4C) & ~0x41));
- }
- }
- static void
- reset_bkm(struct IsdnCardState *cs)
- {
- long flags;
- if (cs->subtyp == SCT_1) {
- wordout(cs->hw.ax.plx_adr + 0x50, (wordin(cs->hw.ax.plx_adr + 0x50) & ~4));
- save_flags(flags);
- sti();
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout((10 * HZ) / 1000);
- /* Remove the soft reset */
- wordout(cs->hw.ax.plx_adr + 0x50, (wordin(cs->hw.ax.plx_adr + 0x50) | 4));
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout((10 * HZ) / 1000);
- restore_flags(flags);
- }
- }
- static int
- BKM_card_msg(struct IsdnCardState *cs, int mt, void *arg)
- {
- switch (mt) {
- case CARD_RESET:
- /* Disable ints */
- set_ipac_active(cs, 0);
- enable_bkm_int(cs, 0);
- reset_bkm(cs);
- return (0);
- case CARD_RELEASE:
- /* Sanity */
- set_ipac_active(cs, 0);
- enable_bkm_int(cs, 0);
- release_io_sct_quadro(cs);
- return (0);
- case CARD_INIT:
- cs->debug |= L1_DEB_IPAC;
- set_ipac_active(cs, 1);
- inithscxisac(cs, 3);
- /* Enable ints */
- enable_bkm_int(cs, 1);
- return (0);
- case CARD_TEST:
- return (0);
- }
- return (0);
- }
- int __init
- sct_alloc_io(u_int adr, u_int len)
- {
- if (check_region(adr, len)) {
- printk(KERN_WARNING
- "HiSax: Scitel port %#x-%#x already in usen",
- adr, adr + len);
- return (1);
- } else {
- request_region(adr, len, "scitel");
- }
- return(0);
- }
- static struct pci_dev *dev_a8 __initdata = NULL;
- static u16 sub_vendor_id __initdata = 0;
- static u16 sub_sys_id __initdata = 0;
- static u_char pci_bus __initdata = 0;
- static u_char pci_device_fn __initdata = 0;
- static u_char pci_irq __initdata = 0;
- #endif /* CONFIG_PCI */
- int __init
- setup_sct_quadro(struct IsdnCard *card)
- {
- #if CONFIG_PCI
- struct IsdnCardState *cs = card->cs;
- char tmp[64];
- u_char pci_rev_id;
- u_int found = 0;
- u_int pci_ioaddr1, pci_ioaddr2, pci_ioaddr3, pci_ioaddr4, pci_ioaddr5;
- strcpy(tmp, sct_quadro_revision);
- printk(KERN_INFO "HiSax: T-Berkom driver Rev. %sn", HiSax_getrev(tmp));
- if (cs->typ == ISDN_CTYPE_SCT_QUADRO) {
- cs->subtyp = SCT_1; /* Preset */
- } else
- return (0);
- /* Identify subtype by para[0] */
- if (card->para[0] >= SCT_1 && card->para[0] <= SCT_4)
- cs->subtyp = card->para[0];
- else {
- printk(KERN_WARNING "HiSax: %s: Invalid subcontroller in configuration, default to 1n",
- CardType[card->typ]);
- return (0);
- }
- if ((cs->subtyp != SCT_1) && ((sub_sys_id != PCI_DEVICE_ID_BERKOM_SCITEL_QUADRO) ||
- (sub_vendor_id != PCI_VENDOR_ID_BERKOM)))
- return (0);
- if (cs->subtyp == SCT_1) {
- if (!pci_present()) {
- printk(KERN_ERR "bkm_a4t: no PCI bus presentn");
- return (0);
- }
- while ((dev_a8 = pci_find_device(PCI_VENDOR_ID_PLX,
- PCI_DEVICE_ID_PLX_9050, dev_a8))) {
-
- sub_vendor_id = dev_a8->subsystem_vendor;
- sub_sys_id = dev_a8->subsystem_device;
- if ((sub_sys_id == PCI_DEVICE_ID_BERKOM_SCITEL_QUADRO) &&
- (sub_vendor_id == PCI_VENDOR_ID_BERKOM)) {
- if (pci_enable_device(dev_a8))
- return(0);
- pci_ioaddr1 = pci_resource_start(dev_a8, 1);
- pci_irq = dev_a8->irq;
- pci_bus = dev_a8->bus->number;
- pci_device_fn = dev_a8->devfn;
- found = 1;
- break;
- }
- }
- if (!found) {
- printk(KERN_WARNING "HiSax: %s (%s): Card not foundn",
- CardType[card->typ],
- sct_quadro_subtypes[cs->subtyp]);
- return (0);
- }
- #ifdef ATTEMPT_PCI_REMAPPING
- /* HACK: PLX revision 1 bug: PLX address bit 7 must not be set */
- pcibios_read_config_byte(pci_bus, pci_device_fn,
- PCI_REVISION_ID, &pci_rev_id);
- if ((pci_ioaddr1 & 0x80) && (pci_rev_id == 1)) {
- printk(KERN_WARNING "HiSax: %s (%s): PLX rev 1, remapping required!n",
- CardType[card->typ],
- sct_quadro_subtypes[cs->subtyp]);
- /* Restart PCI negotiation */
- pcibios_write_config_dword(pci_bus, pci_device_fn,
- PCI_BASE_ADDRESS_1, (u_int) - 1);
- /* Move up by 0x80 byte */
- pci_ioaddr1 += 0x80;
- pci_ioaddr1 &= PCI_BASE_ADDRESS_IO_MASK;
- pcibios_write_config_dword(pci_bus, pci_device_fn,
- PCI_BASE_ADDRESS_1, pci_ioaddr1);
- dev_a8->resource[ 1].start = pci_ioaddr1;
- }
- #endif /* End HACK */
- }
- if (!pci_irq) { /* IRQ range check ?? */
- printk(KERN_WARNING "HiSax: %s (%s): No IRQn",
- CardType[card->typ],
- sct_quadro_subtypes[cs->subtyp]);
- return (0);
- }
- pcibios_read_config_dword(pci_bus, pci_device_fn, PCI_BASE_ADDRESS_1, &pci_ioaddr1);
- pcibios_read_config_dword(pci_bus, pci_device_fn, PCI_BASE_ADDRESS_2, &pci_ioaddr2);
- pcibios_read_config_dword(pci_bus, pci_device_fn, PCI_BASE_ADDRESS_3, &pci_ioaddr3);
- pcibios_read_config_dword(pci_bus, pci_device_fn, PCI_BASE_ADDRESS_4, &pci_ioaddr4);
- pcibios_read_config_dword(pci_bus, pci_device_fn, PCI_BASE_ADDRESS_5, &pci_ioaddr5);
- if (!pci_ioaddr1 || !pci_ioaddr2 || !pci_ioaddr3 || !pci_ioaddr4 || !pci_ioaddr5) {
- printk(KERN_WARNING "HiSax: %s (%s): No IO base address(es)n",
- CardType[card->typ],
- sct_quadro_subtypes[cs->subtyp]);
- return (0);
- }
- pci_ioaddr1 &= PCI_BASE_ADDRESS_IO_MASK;
- pci_ioaddr2 &= PCI_BASE_ADDRESS_IO_MASK;
- pci_ioaddr3 &= PCI_BASE_ADDRESS_IO_MASK;
- pci_ioaddr4 &= PCI_BASE_ADDRESS_IO_MASK;
- pci_ioaddr5 &= PCI_BASE_ADDRESS_IO_MASK;
- /* Take over */
- cs->irq = pci_irq;
- cs->irq_flags |= SA_SHIRQ;
- /* pci_ioaddr1 is unique to all subdevices */
- /* pci_ioaddr2 is for the fourth subdevice only */
- /* pci_ioaddr3 is for the third subdevice only */
- /* pci_ioaddr4 is for the second subdevice only */
- /* pci_ioaddr5 is for the first subdevice only */
- cs->hw.ax.plx_adr = pci_ioaddr1;
- /* Enter all ipac_base addresses */
- switch(cs->subtyp) {
- case 1:
- cs->hw.ax.base = pci_ioaddr5 + 0x00;
- if (sct_alloc_io(pci_ioaddr1, 128))
- return(0);
- if (sct_alloc_io(pci_ioaddr5, 64))
- return(0);
- /* disable all IPAC */
- writereg(pci_ioaddr5, pci_ioaddr5 + 4,
- IPAC_MASK, 0xFF);
- writereg(pci_ioaddr4 + 0x08, pci_ioaddr4 + 0x0c,
- IPAC_MASK, 0xFF);
- writereg(pci_ioaddr3 + 0x10, pci_ioaddr3 + 0x14,
- IPAC_MASK, 0xFF);
- writereg(pci_ioaddr2 + 0x20, pci_ioaddr2 + 0x24,
- IPAC_MASK, 0xFF);
- break;
- case 2:
- cs->hw.ax.base = pci_ioaddr4 + 0x08;
- if (sct_alloc_io(pci_ioaddr4, 64))
- return(0);
- break;
- case 3:
- cs->hw.ax.base = pci_ioaddr3 + 0x10;
- if (sct_alloc_io(pci_ioaddr3, 64))
- return(0);
- break;
- case 4:
- cs->hw.ax.base = pci_ioaddr2 + 0x20;
- if (sct_alloc_io(pci_ioaddr2, 64))
- return(0);
- break;
- }
- /* For isac and hscx data path */
- cs->hw.ax.data_adr = cs->hw.ax.base + 4;
- printk(KERN_INFO "HiSax: %s (%s) configured at 0x%.4lX, 0x%.4lX, 0x%.4lX and IRQ %dn",
- CardType[card->typ],
- sct_quadro_subtypes[cs->subtyp],
- cs->hw.ax.plx_adr,
- cs->hw.ax.base,
- cs->hw.ax.data_adr,
- cs->irq);
- test_and_set_bit(HW_IPAC, &cs->HW_Flags);
- 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 = &BKM_card_msg;
- cs->irq_func = &bkm_interrupt_ipac;
- printk(KERN_INFO "HiSax: %s (%s): IPAC Version %dn",
- CardType[card->typ],
- sct_quadro_subtypes[cs->subtyp],
- readreg(cs->hw.ax.base, cs->hw.ax.data_adr, IPAC_ID));
- return (1);
- #else
- printk(KERN_ERR "HiSax: bkm_a8 only supported on PCI Systemsn");
- #endif /* CONFIG_PCI */
- }