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!
diff --git a/drivers/isdn/act2000/act2000_isa.c b/drivers/isdn/act2000/act2000_isa.c
new file mode 100644
index 0000000..bc98d77
--- /dev/null
+++ b/drivers/isdn/act2000/act2000_isa.c
@@ -0,0 +1,449 @@
+/* $Id: act2000_isa.c,v 1.11.6.3 2001/09/23 22:24:32 kai Exp $
+ *
+ * ISDN lowlevel-module for the IBM ISDN-S0 Active 2000 (ISA-Version).
+ *
+ * Author Fritz Elfert
+ * Copyright by Fritz Elfert <fritz@isdn4linux.de>
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * Thanks to Friedemann Baitinger and IBM Germany
+ *
+ */
+
+#include "act2000.h"
+#include "act2000_isa.h"
+#include "capi.h"
+
+static act2000_card *irq2card_map[16];
+
+/*
+ * Reset Controller, then try to read the Card's signature.
+ + Return:
+ * 1 = Signature found.
+ * 0 = Signature not found.
+ */
+static int
+act2000_isa_reset(unsigned short portbase)
+{
+ unsigned char reg;
+ int i;
+ int found;
+ int serial = 0;
+
+ found = 0;
+ if ((reg = inb(portbase + ISA_COR)) != 0xff) {
+ outb(reg | ISA_COR_RESET, portbase + ISA_COR);
+ mdelay(10);
+ outb(reg, portbase + ISA_COR);
+ mdelay(10);
+
+ for (i = 0; i < 16; i++) {
+ if (inb(portbase + ISA_ISR) & ISA_ISR_SERIAL)
+ serial |= 0x10000;
+ serial >>= 1;
+ }
+ if (serial == ISA_SER_ID)
+ found++;
+ }
+ return found;
+}
+
+int
+act2000_isa_detect(unsigned short portbase)
+{
+ int ret = 0;
+
+ if (request_region(portbase, ACT2000_PORTLEN, "act2000isa")) {
+ ret = act2000_isa_reset(portbase);
+ release_region(portbase, ISA_REGION);
+ }
+ return ret;
+}
+
+static irqreturn_t
+act2000_isa_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ act2000_card *card = irq2card_map[irq];
+ u_char istatus;
+
+ if (!card) {
+ printk(KERN_WARNING
+ "act2000: Spurious interrupt!\n");
+ return IRQ_NONE;
+ }
+ istatus = (inb(ISA_PORT_ISR) & 0x07);
+ if (istatus & ISA_ISR_OUT) {
+ /* RX fifo has data */
+ istatus &= ISA_ISR_OUT_MASK;
+ outb(0, ISA_PORT_SIS);
+ act2000_isa_receive(card);
+ outb(ISA_SIS_INT, ISA_PORT_SIS);
+ }
+ if (istatus & ISA_ISR_ERR) {
+ /* Error Interrupt */
+ istatus &= ISA_ISR_ERR_MASK;
+ printk(KERN_WARNING "act2000: errIRQ\n");
+ }
+ if (istatus)
+ printk(KERN_DEBUG "act2000: ?IRQ %d %02x\n", irq, istatus);
+ return IRQ_HANDLED;
+}
+
+static void
+act2000_isa_select_irq(act2000_card * card)
+{
+ unsigned char reg;
+
+ reg = (inb(ISA_PORT_COR) & ~ISA_COR_IRQOFF) | ISA_COR_PERR;
+ switch (card->irq) {
+ case 3:
+ reg = ISA_COR_IRQ03;
+ break;
+ case 5:
+ reg = ISA_COR_IRQ05;
+ break;
+ case 7:
+ reg = ISA_COR_IRQ07;
+ break;
+ case 10:
+ reg = ISA_COR_IRQ10;
+ break;
+ case 11:
+ reg = ISA_COR_IRQ11;
+ break;
+ case 12:
+ reg = ISA_COR_IRQ12;
+ break;
+ case 15:
+ reg = ISA_COR_IRQ15;
+ break;
+ }
+ outb(reg, ISA_PORT_COR);
+}
+
+static void
+act2000_isa_enable_irq(act2000_card * card)
+{
+ act2000_isa_select_irq(card);
+ /* Enable READ irq */
+ outb(ISA_SIS_INT, ISA_PORT_SIS);
+}
+
+/*
+ * Install interrupt handler, enable irq on card.
+ * If irq is -1, choose next free irq, else irq is given explicitely.
+ */
+int
+act2000_isa_config_irq(act2000_card * card, short irq)
+{
+ if (card->flags & ACT2000_FLAGS_IVALID) {
+ free_irq(card->irq, NULL);
+ irq2card_map[card->irq] = NULL;
+ }
+ card->flags &= ~ACT2000_FLAGS_IVALID;
+ outb(ISA_COR_IRQOFF, ISA_PORT_COR);
+ if (!irq)
+ return 0;
+
+ if (!request_irq(irq, &act2000_isa_interrupt, 0, card->regname, NULL)) {
+ card->irq = irq;
+ irq2card_map[card->irq] = card;
+ card->flags |= ACT2000_FLAGS_IVALID;
+ printk(KERN_WARNING
+ "act2000: Could not request irq %d\n",irq);
+ return -EBUSY;
+ } else {
+ act2000_isa_select_irq(card);
+ /* Disable READ and WRITE irq */
+ outb(0, ISA_PORT_SIS);
+ outb(0, ISA_PORT_SOS);
+ }
+ return 0;
+}
+
+int
+act2000_isa_config_port(act2000_card * card, unsigned short portbase)
+{
+ if (card->flags & ACT2000_FLAGS_PVALID) {
+ release_region(card->port, ISA_REGION);
+ card->flags &= ~ACT2000_FLAGS_PVALID;
+ }
+ if (request_region(portbase, ACT2000_PORTLEN, card->regname) == NULL)
+ return -EBUSY;
+ else {
+ card->port = portbase;
+ card->flags |= ACT2000_FLAGS_PVALID;
+ return 0;
+ }
+}
+
+/*
+ * Release ressources, used by an adaptor.
+ */
+void
+act2000_isa_release(act2000_card * card)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&card->lock, flags);
+ if (card->flags & ACT2000_FLAGS_IVALID) {
+ free_irq(card->irq, NULL);
+ irq2card_map[card->irq] = NULL;
+ }
+ card->flags &= ~ACT2000_FLAGS_IVALID;
+ if (card->flags & ACT2000_FLAGS_PVALID)
+ release_region(card->port, ISA_REGION);
+ card->flags &= ~ACT2000_FLAGS_PVALID;
+ spin_unlock_irqrestore(&card->lock, flags);
+}
+
+static int
+act2000_isa_writeb(act2000_card * card, u_char data)
+{
+ u_char timeout = 40;
+
+ while (timeout) {
+ if (inb(ISA_PORT_SOS) & ISA_SOS_READY) {
+ outb(data, ISA_PORT_SDO);
+ return 0;
+ } else {
+ timeout--;
+ udelay(10);
+ }
+ }
+ return 1;
+}
+
+static int
+act2000_isa_readb(act2000_card * card, u_char * data)
+{
+ u_char timeout = 40;
+
+ while (timeout) {
+ if (inb(ISA_PORT_SIS) & ISA_SIS_READY) {
+ *data = inb(ISA_PORT_SDI);
+ return 0;
+ } else {
+ timeout--;
+ udelay(10);
+ }
+ }
+ return 1;
+}
+
+void
+act2000_isa_receive(act2000_card *card)
+{
+ u_char c;
+
+ if (test_and_set_bit(ACT2000_LOCK_RX, (void *) &card->ilock) != 0)
+ return;
+ while (!act2000_isa_readb(card, &c)) {
+ if (card->idat.isa.rcvidx < 8) {
+ card->idat.isa.rcvhdr[card->idat.isa.rcvidx++] = c;
+ if (card->idat.isa.rcvidx == 8) {
+ int valid = actcapi_chkhdr(card, (actcapi_msghdr *)&card->idat.isa.rcvhdr);
+
+ if (valid) {
+ card->idat.isa.rcvlen = ((actcapi_msghdr *)&card->idat.isa.rcvhdr)->len;
+ card->idat.isa.rcvskb = dev_alloc_skb(card->idat.isa.rcvlen);
+ if (card->idat.isa.rcvskb == NULL) {
+ card->idat.isa.rcvignore = 1;
+ printk(KERN_WARNING
+ "act2000_isa_receive: no memory\n");
+ test_and_clear_bit(ACT2000_LOCK_RX, (void *) &card->ilock);
+ return;
+ }
+ memcpy(skb_put(card->idat.isa.rcvskb, 8), card->idat.isa.rcvhdr, 8);
+ card->idat.isa.rcvptr = skb_put(card->idat.isa.rcvskb, card->idat.isa.rcvlen - 8);
+ } else {
+ card->idat.isa.rcvidx = 0;
+ printk(KERN_WARNING
+ "act2000_isa_receive: Invalid CAPI msg\n");
+ {
+ int i; __u8 *p; __u8 *c; __u8 tmp[30];
+ for (i = 0, p = (__u8 *)&card->idat.isa.rcvhdr, c = tmp; i < 8; i++)
+ c += sprintf(c, "%02x ", *(p++));
+ printk(KERN_WARNING "act2000_isa_receive: %s\n", tmp);
+ }
+ }
+ }
+ } else {
+ if (!card->idat.isa.rcvignore)
+ *card->idat.isa.rcvptr++ = c;
+ if (++card->idat.isa.rcvidx >= card->idat.isa.rcvlen) {
+ if (!card->idat.isa.rcvignore) {
+ skb_queue_tail(&card->rcvq, card->idat.isa.rcvskb);
+ act2000_schedule_rx(card);
+ }
+ card->idat.isa.rcvidx = 0;
+ card->idat.isa.rcvlen = 8;
+ card->idat.isa.rcvignore = 0;
+ card->idat.isa.rcvskb = NULL;
+ card->idat.isa.rcvptr = card->idat.isa.rcvhdr;
+ }
+ }
+ }
+ if (!(card->flags & ACT2000_FLAGS_IVALID)) {
+ /* In polling mode, schedule myself */
+ if ((card->idat.isa.rcvidx) &&
+ (card->idat.isa.rcvignore ||
+ (card->idat.isa.rcvidx < card->idat.isa.rcvlen)))
+ act2000_schedule_poll(card);
+ }
+ test_and_clear_bit(ACT2000_LOCK_RX, (void *) &card->ilock);
+}
+
+void
+act2000_isa_send(act2000_card * card)
+{
+ unsigned long flags;
+ struct sk_buff *skb;
+ actcapi_msg *msg;
+ int l;
+
+ if (test_and_set_bit(ACT2000_LOCK_TX, (void *) &card->ilock) != 0)
+ return;
+ while (1) {
+ spin_lock_irqsave(&card->lock, flags);
+ if (!(card->sbuf)) {
+ if ((card->sbuf = skb_dequeue(&card->sndq))) {
+ card->ack_msg = card->sbuf->data;
+ msg = (actcapi_msg *)card->sbuf->data;
+ if ((msg->hdr.cmd.cmd == 0x86) &&
+ (msg->hdr.cmd.subcmd == 0) ) {
+ /* Save flags in message */
+ card->need_b3ack = msg->msg.data_b3_req.flags;
+ msg->msg.data_b3_req.flags = 0;
+ }
+ }
+ }
+ spin_unlock_irqrestore(&card->lock, flags);
+ if (!(card->sbuf)) {
+ /* No more data to send */
+ test_and_clear_bit(ACT2000_LOCK_TX, (void *) &card->ilock);
+ return;
+ }
+ skb = card->sbuf;
+ l = 0;
+ while (skb->len) {
+ if (act2000_isa_writeb(card, *(skb->data))) {
+ /* Fifo is full, but more data to send */
+ test_and_clear_bit(ACT2000_LOCK_TX, (void *) &card->ilock);
+ /* Schedule myself */
+ act2000_schedule_tx(card);
+ return;
+ }
+ skb_pull(skb, 1);
+ l++;
+ }
+ msg = (actcapi_msg *)card->ack_msg;
+ if ((msg->hdr.cmd.cmd == 0x86) &&
+ (msg->hdr.cmd.subcmd == 0) ) {
+ /*
+ * If it's user data, reset data-ptr
+ * and put skb into ackq.
+ */
+ skb->data = card->ack_msg;
+ /* Restore flags in message */
+ msg->msg.data_b3_req.flags = card->need_b3ack;
+ skb_queue_tail(&card->ackq, skb);
+ } else
+ dev_kfree_skb(skb);
+ card->sbuf = NULL;
+ }
+}
+
+/*
+ * Get firmware ID, check for 'ISDN' signature.
+ */
+static int
+act2000_isa_getid(act2000_card * card)
+{
+
+ act2000_fwid fid;
+ u_char *p = (u_char *) & fid;
+ int count = 0;
+
+ while (1) {
+ if (count > 510)
+ return -EPROTO;
+ if (act2000_isa_readb(card, p++))
+ break;
+ count++;
+ }
+ if (count <= 20) {
+ printk(KERN_WARNING "act2000: No Firmware-ID!\n");
+ return -ETIME;
+ }
+ *p = '\0';
+ fid.revlen[0] = '\0';
+ if (strcmp(fid.isdn, "ISDN")) {
+ printk(KERN_WARNING "act2000: Wrong Firmware-ID!\n");
+ return -EPROTO;
+ }
+ if ((p = strchr(fid.revision, '\n')))
+ *p = '\0';
+ printk(KERN_INFO "act2000: Firmware-ID: %s\n", fid.revision);
+ if (card->flags & ACT2000_FLAGS_IVALID) {
+ printk(KERN_DEBUG "Enabling Interrupts ...\n");
+ act2000_isa_enable_irq(card);
+ }
+ return 0;
+}
+
+/*
+ * Download microcode into card, check Firmware signature.
+ */
+int
+act2000_isa_download(act2000_card * card, act2000_ddef __user * cb)
+{
+ unsigned int length;
+ int l;
+ int c;
+ long timeout;
+ u_char *b;
+ u_char __user *p;
+ u_char *buf;
+ act2000_ddef cblock;
+
+ if (!act2000_isa_reset(card->port))
+ return -ENXIO;
+ msleep_interruptible(500);
+ if (copy_from_user(&cblock, cb, sizeof(cblock)))
+ return -EFAULT;
+ length = cblock.length;
+ p = cblock.buffer;
+ if (!access_ok(VERIFY_READ, p, length))
+ return -EFAULT;
+ buf = (u_char *) kmalloc(1024, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+ timeout = 0;
+ while (length) {
+ l = (length > 1024) ? 1024 : length;
+ c = 0;
+ b = buf;
+ if (copy_from_user(buf, p, l)) {
+ kfree(buf);
+ return -EFAULT;
+ }
+ while (c < l) {
+ if (act2000_isa_writeb(card, *b++)) {
+ printk(KERN_WARNING
+ "act2000: loader timed out"
+ " len=%d c=%d\n", length, c);
+ kfree(buf);
+ return -ETIME;
+ }
+ c++;
+ }
+ length -= l;
+ p += l;
+ }
+ kfree(buf);
+ msleep_interruptible(500);
+ return (act2000_isa_getid(card));
+}