mISDN: Add support for Speedfax+ cards
Add support for the Siemens ISAR DSP chip and cards based on it,
including analog modem protocols.
Signed-off-by: Karsten Keil <keil@b1-systems.de>
diff --git a/drivers/isdn/hardware/mISDN/speedfax.c b/drivers/isdn/hardware/mISDN/speedfax.c
new file mode 100644
index 0000000..ff3a4e2
--- /dev/null
+++ b/drivers/isdn/hardware/mISDN/speedfax.c
@@ -0,0 +1,526 @@
+/*
+ * speedfax.c low level stuff for Sedlbauer Speedfax+ cards
+ * based on the ISAR DSP
+ * Thanks to Sedlbauer AG for informations and HW
+ *
+ * Author Karsten Keil <keil@isdn4linux.de>
+ *
+ * Copyright 2009 by Karsten Keil <keil@isdn4linux.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/mISDNhw.h>
+#include <linux/firmware.h>
+#include "ipac.h"
+#include "isar.h"
+
+#define SPEEDFAX_REV "2.0"
+
+#define PCI_SUBVENDOR_SPEEDFAX_PYRAMID 0x51
+#define PCI_SUBVENDOR_SPEEDFAX_PCI 0x54
+#define PCI_SUB_ID_SEDLBAUER 0x01
+
+#define SFAX_PCI_ADDR 0xc8
+#define SFAX_PCI_ISAC 0xd0
+#define SFAX_PCI_ISAR 0xe0
+
+/* TIGER 100 Registers */
+
+#define TIGER_RESET_ADDR 0x00
+#define TIGER_EXTERN_RESET_ON 0x01
+#define TIGER_EXTERN_RESET_OFF 0x00
+#define TIGER_AUX_CTRL 0x02
+#define TIGER_AUX_DATA 0x03
+#define TIGER_AUX_IRQMASK 0x05
+#define TIGER_AUX_STATUS 0x07
+
+/* Tiger AUX BITs */
+#define SFAX_AUX_IOMASK 0xdd /* 1 and 5 are inputs */
+#define SFAX_ISAR_RESET_BIT_OFF 0x00
+#define SFAX_ISAR_RESET_BIT_ON 0x01
+#define SFAX_TIGER_IRQ_BIT 0x02
+#define SFAX_LED1_BIT 0x08
+#define SFAX_LED2_BIT 0x10
+
+#define SFAX_PCI_RESET_ON (SFAX_ISAR_RESET_BIT_ON)
+#define SFAX_PCI_RESET_OFF (SFAX_LED1_BIT | SFAX_LED2_BIT)
+
+static int sfax_cnt;
+static u32 debug;
+static u32 irqloops = 4;
+
+struct sfax_hw {
+ struct list_head list;
+ struct pci_dev *pdev;
+ char name[MISDN_MAX_IDLEN];
+ u32 irq;
+ u32 irqcnt;
+ u32 cfg;
+ struct _ioport p_isac;
+ struct _ioport p_isar;
+ u8 aux_data;
+ spinlock_t lock; /* HW access lock */
+ struct isac_hw isac;
+ struct isar_hw isar;
+};
+
+static LIST_HEAD(Cards);
+static DEFINE_RWLOCK(card_lock); /* protect Cards */
+
+static void
+_set_debug(struct sfax_hw *card)
+{
+ card->isac.dch.debug = debug;
+ card->isar.ch[0].bch.debug = debug;
+ card->isar.ch[1].bch.debug = debug;
+}
+
+static int
+set_debug(const char *val, struct kernel_param *kp)
+{
+ int ret;
+ struct sfax_hw *card;
+
+ ret = param_set_uint(val, kp);
+ if (!ret) {
+ read_lock(&card_lock);
+ list_for_each_entry(card, &Cards, list)
+ _set_debug(card);
+ read_unlock(&card_lock);
+ }
+ return ret;
+}
+
+MODULE_AUTHOR("Karsten Keil");
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION(SPEEDFAX_REV);
+module_param_call(debug, set_debug, param_get_uint, &debug, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Speedfax debug mask");
+module_param(irqloops, uint, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(irqloops, "Speedfax maximal irqloops (default 4)");
+
+IOFUNC_IND(ISAC, sfax_hw, p_isac)
+IOFUNC_IND(ISAR, sfax_hw, p_isar)
+
+static irqreturn_t
+speedfax_irq(int intno, void *dev_id)
+{
+ struct sfax_hw *sf = dev_id;
+ u8 val;
+ int cnt = irqloops;
+
+ spin_lock(&sf->lock);
+ val = inb(sf->cfg + TIGER_AUX_STATUS);
+ if (val & SFAX_TIGER_IRQ_BIT) { /* for us or shared ? */
+ spin_unlock(&sf->lock);
+ return IRQ_NONE; /* shared */
+ }
+ sf->irqcnt++;
+ val = ReadISAR_IND(sf, ISAR_IRQBIT);
+Start_ISAR:
+ if (val & ISAR_IRQSTA)
+ mISDNisar_irq(&sf->isar);
+ val = ReadISAC_IND(sf, ISAC_ISTA);
+ if (val)
+ mISDNisac_irq(&sf->isac, val);
+ val = ReadISAR_IND(sf, ISAR_IRQBIT);
+ if ((val & ISAR_IRQSTA) && cnt--)
+ goto Start_ISAR;
+ if (cnt < irqloops)
+ pr_debug("%s: %d irqloops cpu%d\n", sf->name,
+ irqloops - cnt, smp_processor_id());
+ if (irqloops && !cnt)
+ pr_notice("%s: %d IRQ LOOP cpu%d\n", sf->name,
+ irqloops, smp_processor_id());
+ spin_unlock(&sf->lock);
+ return IRQ_HANDLED;
+}
+
+static void
+enable_hwirq(struct sfax_hw *sf)
+{
+ WriteISAC_IND(sf, ISAC_MASK, 0);
+ WriteISAR_IND(sf, ISAR_IRQBIT, ISAR_IRQMSK);
+ outb(SFAX_TIGER_IRQ_BIT, sf->cfg + TIGER_AUX_IRQMASK);
+}
+
+static void
+disable_hwirq(struct sfax_hw *sf)
+{
+ WriteISAC_IND(sf, ISAC_MASK, 0xFF);
+ WriteISAR_IND(sf, ISAR_IRQBIT, 0);
+ outb(0, sf->cfg + TIGER_AUX_IRQMASK);
+}
+
+static void
+reset_speedfax(struct sfax_hw *sf)
+{
+
+ pr_debug("%s: resetting card\n", sf->name);
+ outb(TIGER_EXTERN_RESET_ON, sf->cfg + TIGER_RESET_ADDR);
+ outb(SFAX_PCI_RESET_ON, sf->cfg + TIGER_AUX_DATA);
+ mdelay(1);
+ outb(TIGER_EXTERN_RESET_OFF, sf->cfg + TIGER_RESET_ADDR);
+ sf->aux_data = SFAX_PCI_RESET_OFF;
+ outb(sf->aux_data, sf->cfg + TIGER_AUX_DATA);
+ mdelay(1);
+}
+
+static int
+sfax_ctrl(struct sfax_hw *sf, u32 cmd, u_long arg)
+{
+ int ret = 0;
+
+ switch (cmd) {
+ case HW_RESET_REQ:
+ reset_speedfax(sf);
+ break;
+ case HW_ACTIVATE_IND:
+ if (arg & 1)
+ sf->aux_data &= ~SFAX_LED1_BIT;
+ if (arg & 2)
+ sf->aux_data &= ~SFAX_LED2_BIT;
+ outb(sf->aux_data, sf->cfg + TIGER_AUX_DATA);
+ break;
+ case HW_DEACT_IND:
+ if (arg & 1)
+ sf->aux_data |= SFAX_LED1_BIT;
+ if (arg & 2)
+ sf->aux_data |= SFAX_LED2_BIT;
+ outb(sf->aux_data, sf->cfg + TIGER_AUX_DATA);
+ break;
+ default:
+ pr_info("%s: %s unknown command %x %lx\n",
+ sf->name, __func__, cmd, arg);
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static int
+channel_ctrl(struct sfax_hw *sf, struct mISDN_ctrl_req *cq)
+{
+ int ret = 0;
+
+ switch (cq->op) {
+ case MISDN_CTRL_GETOP:
+ cq->op = MISDN_CTRL_LOOP;
+ break;
+ case MISDN_CTRL_LOOP:
+ /* cq->channel: 0 disable, 1 B1 loop 2 B2 loop, 3 both */
+ if (cq->channel < 0 || cq->channel > 3) {
+ ret = -EINVAL;
+ break;
+ }
+ ret = sf->isac.ctrl(&sf->isac, HW_TESTLOOP, cq->channel);
+ break;
+ default:
+ pr_info("%s: unknown Op %x\n", sf->name, cq->op);
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static int
+sfax_dctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
+{
+ struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D);
+ struct dchannel *dch = container_of(dev, struct dchannel, dev);
+ struct sfax_hw *sf = dch->hw;
+ struct channel_req *rq;
+ int err = 0;
+
+ pr_debug("%s: cmd:%x %p\n", sf->name, cmd, arg);
+ switch (cmd) {
+ case OPEN_CHANNEL:
+ rq = arg;
+ if (rq->protocol == ISDN_P_TE_S0)
+ err = sf->isac.open(&sf->isac, rq);
+ else
+ err = sf->isar.open(&sf->isar, rq);
+ if (err)
+ break;
+ if (!try_module_get(THIS_MODULE))
+ pr_info("%s: cannot get module\n", sf->name);
+ break;
+ case CLOSE_CHANNEL:
+ pr_debug("%s: dev(%d) close from %p\n", sf->name,
+ dch->dev.id, __builtin_return_address(0));
+ module_put(THIS_MODULE);
+ break;
+ case CONTROL_CHANNEL:
+ err = channel_ctrl(sf, arg);
+ break;
+ default:
+ pr_debug("%s: unknown command %x\n", sf->name, cmd);
+ return -EINVAL;
+ }
+ return err;
+}
+
+static int __devinit
+init_card(struct sfax_hw *sf)
+{
+ int ret, cnt = 3;
+ u_long flags;
+
+ ret = request_irq(sf->irq, speedfax_irq, IRQF_SHARED, sf->name, sf);
+ if (ret) {
+ pr_info("%s: couldn't get interrupt %d\n", sf->name, sf->irq);
+ return ret;
+ }
+ while (cnt--) {
+ spin_lock_irqsave(&sf->lock, flags);
+ ret = sf->isac.init(&sf->isac);
+ if (ret) {
+ spin_unlock_irqrestore(&sf->lock, flags);
+ pr_info("%s: ISAC init failed with %d\n",
+ sf->name, ret);
+ break;
+ }
+ enable_hwirq(sf);
+ /* RESET Receiver and Transmitter */
+ WriteISAC_IND(sf, ISAC_CMDR, 0x41);
+ spin_unlock_irqrestore(&sf->lock, flags);
+ msleep_interruptible(10);
+ if (debug & DEBUG_HW)
+ pr_notice("%s: IRQ %d count %d\n", sf->name,
+ sf->irq, sf->irqcnt);
+ if (!sf->irqcnt) {
+ pr_info("%s: IRQ(%d) got no requests during init %d\n",
+ sf->name, sf->irq, 3 - cnt);
+ } else
+ return 0;
+ }
+ free_irq(sf->irq, sf);
+ return -EIO;
+}
+
+
+static int __devinit
+setup_speedfax(struct sfax_hw *sf)
+{
+ u_long flags;
+
+ if (!request_region(sf->cfg, 256, sf->name)) {
+ pr_info("mISDN: %s config port %x-%x already in use\n",
+ sf->name, sf->cfg, sf->cfg + 255);
+ return -EIO;
+ }
+ outb(0xff, sf->cfg);
+ outb(0, sf->cfg);
+ outb(0xdd, sf->cfg + TIGER_AUX_CTRL);
+ outb(0, sf->cfg + TIGER_AUX_IRQMASK);
+
+ sf->isac.type = IPAC_TYPE_ISAC;
+ sf->p_isac.ale = sf->cfg + SFAX_PCI_ADDR;
+ sf->p_isac.port = sf->cfg + SFAX_PCI_ISAC;
+ sf->p_isar.ale = sf->cfg + SFAX_PCI_ADDR;
+ sf->p_isar.port = sf->cfg + SFAX_PCI_ISAR;
+ ASSIGN_FUNC(IND, ISAC, sf->isac);
+ ASSIGN_FUNC(IND, ISAR, sf->isar);
+ spin_lock_irqsave(&sf->lock, flags);
+ reset_speedfax(sf);
+ disable_hwirq(sf);
+ spin_unlock_irqrestore(&sf->lock, flags);
+ return 0;
+}
+
+static void
+release_card(struct sfax_hw *card) {
+ u_long flags;
+
+ spin_lock_irqsave(&card->lock, flags);
+ disable_hwirq(card);
+ spin_unlock_irqrestore(&card->lock, flags);
+ card->isac.release(&card->isac);
+ free_irq(card->irq, card);
+ card->isar.release(&card->isar);
+ mISDN_unregister_device(&card->isac.dch.dev);
+ release_region(card->cfg, 256);
+ pci_disable_device(card->pdev);
+ pci_set_drvdata(card->pdev, NULL);
+ write_lock_irqsave(&card_lock, flags);
+ list_del(&card->list);
+ write_unlock_irqrestore(&card_lock, flags);
+ kfree(card);
+ sfax_cnt--;
+}
+
+static int __devinit
+setup_instance(struct sfax_hw *card)
+{
+ const struct firmware *firmware;
+ int i, err;
+ u_long flags;
+
+ snprintf(card->name, MISDN_MAX_IDLEN - 1, "Speedfax.%d", sfax_cnt + 1);
+ write_lock_irqsave(&card_lock, flags);
+ list_add_tail(&card->list, &Cards);
+ write_unlock_irqrestore(&card_lock, flags);
+ _set_debug(card);
+ spin_lock_init(&card->lock);
+ card->isac.hwlock = &card->lock;
+ card->isar.hwlock = &card->lock;
+ card->isar.ctrl = (void *)&sfax_ctrl;
+ card->isac.name = card->name;
+ card->isar.name = card->name;
+ card->isar.owner = THIS_MODULE;
+
+ err = request_firmware(&firmware, "isdn/ISAR.BIN", &card->pdev->dev);
+ if (err < 0) {
+ pr_info("%s: firmware request failed %d\n",
+ card->name, err);
+ goto error_fw;
+ }
+ if (debug & DEBUG_HW)
+ pr_notice("%s: got firmware %zu bytes\n",
+ card->name, firmware->size);
+
+ mISDNisac_init(&card->isac, card);
+
+ card->isac.dch.dev.D.ctrl = sfax_dctrl;
+ card->isac.dch.dev.Bprotocols =
+ mISDNisar_init(&card->isar, card);
+ for (i = 0; i < 2; i++) {
+ set_channelmap(i + 1, card->isac.dch.dev.channelmap);
+ list_add(&card->isar.ch[i].bch.ch.list,
+ &card->isac.dch.dev.bchannels);
+ }
+
+ err = setup_speedfax(card);
+ if (err)
+ goto error_setup;
+ err = card->isar.init(&card->isar);
+ if (err)
+ goto error;
+ err = mISDN_register_device(&card->isac.dch.dev,
+ &card->pdev->dev, card->name);
+ if (err)
+ goto error;
+ err = init_card(card);
+ if (err)
+ goto error_init;
+ err = card->isar.firmware(&card->isar, firmware->data, firmware->size);
+ if (!err) {
+ release_firmware(firmware);
+ sfax_cnt++;
+ pr_notice("SpeedFax %d cards installed\n", sfax_cnt);
+ return 0;
+ }
+ disable_hwirq(card);
+ free_irq(card->irq, card);
+error_init:
+ mISDN_unregister_device(&card->isac.dch.dev);
+error:
+ release_region(card->cfg, 256);
+error_setup:
+ card->isac.release(&card->isac);
+ card->isar.release(&card->isar);
+ release_firmware(firmware);
+error_fw:
+ pci_disable_device(card->pdev);
+ write_lock_irqsave(&card_lock, flags);
+ list_del(&card->list);
+ write_unlock_irqrestore(&card_lock, flags);
+ kfree(card);
+ return err;
+}
+
+static int __devinit
+sfaxpci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ int err = -ENOMEM;
+ struct sfax_hw *card = kzalloc(sizeof(struct sfax_hw), GFP_KERNEL);
+
+ if (!card) {
+ pr_info("No memory for Speedfax+ PCI\n");
+ return err;
+ }
+ card->pdev = pdev;
+ err = pci_enable_device(pdev);
+ if (err) {
+ kfree(card);
+ return err;
+ }
+
+ pr_notice("mISDN: Speedfax found adapter %s at %s\n",
+ (char *)ent->driver_data, pci_name(pdev));
+
+ card->cfg = pci_resource_start(pdev, 0);
+ card->irq = pdev->irq;
+ pci_set_drvdata(pdev, card);
+ err = setup_instance(card);
+ if (err)
+ pci_set_drvdata(pdev, NULL);
+ return err;
+}
+
+static void __devexit
+sfax_remove_pci(struct pci_dev *pdev)
+{
+ struct sfax_hw *card = pci_get_drvdata(pdev);
+
+ if (card)
+ release_card(card);
+ else
+ pr_debug("%s: drvdata allready removed\n", __func__);
+}
+
+static struct pci_device_id sfaxpci_ids[] __devinitdata = {
+ { PCI_VENDOR_ID_TIGERJET, PCI_DEVICE_ID_TIGERJET_100,
+ PCI_SUBVENDOR_SPEEDFAX_PYRAMID, PCI_SUB_ID_SEDLBAUER,
+ 0, 0, (unsigned long) "Pyramid Speedfax + PCI"
+ },
+ { PCI_VENDOR_ID_TIGERJET, PCI_DEVICE_ID_TIGERJET_100,
+ PCI_SUBVENDOR_SPEEDFAX_PCI, PCI_SUB_ID_SEDLBAUER,
+ 0, 0, (unsigned long) "Sedlbauer Speedfax + PCI"
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(pci, sfaxpci_ids);
+
+static struct pci_driver sfaxpci_driver = {
+ .name = "speedfax+ pci",
+ .probe = sfaxpci_probe,
+ .remove = __devexit_p(sfax_remove_pci),
+ .id_table = sfaxpci_ids,
+};
+
+static int __init
+Speedfax_init(void)
+{
+ int err;
+
+ pr_notice("Sedlbauer Speedfax+ Driver Rev. %s\n",
+ SPEEDFAX_REV);
+ err = pci_register_driver(&sfaxpci_driver);
+ return err;
+}
+
+static void __exit
+Speedfax_cleanup(void)
+{
+ pci_unregister_driver(&sfaxpci_driver);
+}
+
+module_init(Speedfax_init);
+module_exit(Speedfax_cleanup);