diff options
Diffstat (limited to 'drivers/isdn/hardware/mISDN')
| -rw-r--r-- | drivers/isdn/hardware/mISDN/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/isdn/hardware/mISDN/Makefile | 1 | ||||
| -rw-r--r-- | drivers/isdn/hardware/mISDN/hfc_multi.h | 10 | ||||
| -rw-r--r-- | drivers/isdn/hardware/mISDN/hfc_pci.h | 2 | ||||
| -rw-r--r-- | drivers/isdn/hardware/mISDN/hfcmulti.c | 206 | ||||
| -rw-r--r-- | drivers/isdn/hardware/mISDN/hfcpci.c | 239 | ||||
| -rw-r--r-- | drivers/isdn/hardware/mISDN/hfcsusb.c | 2196 | ||||
| -rw-r--r-- | drivers/isdn/hardware/mISDN/hfcsusb.h | 418 |
8 files changed, 2915 insertions, 164 deletions
diff --git a/drivers/isdn/hardware/mISDN/Kconfig b/drivers/isdn/hardware/mISDN/Kconfig index 14793480c45..fd112ae252c 100644 --- a/drivers/isdn/hardware/mISDN/Kconfig +++ b/drivers/isdn/hardware/mISDN/Kconfig @@ -23,3 +23,10 @@ config MISDN_HFCMULTI * HFC-8S (8 S/T interfaces on one chip) * HFC-E1 (E1 interface for 2Mbit ISDN) +config MISDN_HFCUSB + tristate "Support for HFC-S USB based TAs" + depends on USB + help + Enable support for USB ISDN TAs with Cologne Chip AG's + HFC-S USB ISDN Controller + diff --git a/drivers/isdn/hardware/mISDN/Makefile b/drivers/isdn/hardware/mISDN/Makefile index 1e7ca5332ad..b0403526bbb 100644 --- a/drivers/isdn/hardware/mISDN/Makefile +++ b/drivers/isdn/hardware/mISDN/Makefile @@ -5,3 +5,4 @@ obj-$(CONFIG_MISDN_HFCPCI) += hfcpci.o obj-$(CONFIG_MISDN_HFCMULTI) += hfcmulti.o +obj-$(CONFIG_MISDN_HFCUSB) += hfcsusb.o diff --git a/drivers/isdn/hardware/mISDN/hfc_multi.h b/drivers/isdn/hardware/mISDN/hfc_multi.h index 7bbf7300593..663b77f578b 100644 --- a/drivers/isdn/hardware/mISDN/hfc_multi.h +++ b/drivers/isdn/hardware/mISDN/hfc_multi.h @@ -2,10 +2,6 @@ * see notice in hfc_multi.c */ -extern void ztdummy_extern_interrupt(void); -extern void ztdummy_register_interrupt(void); -extern int ztdummy_unregister_interrupt(void); - #define DEBUG_HFCMULTI_FIFO 0x00010000 #define DEBUG_HFCMULTI_CRC 0x00020000 #define DEBUG_HFCMULTI_INIT 0x00040000 @@ -13,6 +9,7 @@ extern int ztdummy_unregister_interrupt(void); #define DEBUG_HFCMULTI_MODE 0x00100000 #define DEBUG_HFCMULTI_MSG 0x00200000 #define DEBUG_HFCMULTI_STATE 0x00400000 +#define DEBUG_HFCMULTI_FILL 0x00800000 #define DEBUG_HFCMULTI_SYNC 0x01000000 #define DEBUG_HFCMULTI_DTMF 0x02000000 #define DEBUG_HFCMULTI_LOCK 0x80000000 @@ -170,6 +167,8 @@ struct hfc_multi { u_long chip; /* chip configuration */ int masterclk; /* port that provides master clock -1=off */ + unsigned char silence;/* silence byte */ + unsigned char silence_data[128];/* silence block */ int dtmf; /* flag that dtmf is currently in process */ int Flen; /* F-buffer size */ int Zlen; /* Z-buffer size (must be int for calculation)*/ @@ -198,6 +197,9 @@ struct hfc_multi { spinlock_t lock; /* the lock */ + struct mISDNclock *iclock; /* isdn clock support */ + int iclock_on; + /* * the channel index is counted from 0, regardless where the channel * is located on the hfc-channel. diff --git a/drivers/isdn/hardware/mISDN/hfc_pci.h b/drivers/isdn/hardware/mISDN/hfc_pci.h index 5783d22a18f..3132ddc99fc 100644 --- a/drivers/isdn/hardware/mISDN/hfc_pci.h +++ b/drivers/isdn/hardware/mISDN/hfc_pci.h @@ -26,7 +26,7 @@ * change mask and threshold simultaneously */ #define HFCPCI_BTRANS_THRESHOLD 128 -#define HFCPCI_BTRANS_MAX 256 +#define HFCPCI_FILLEMPTY 64 #define HFCPCI_BTRANS_THRESMASK 0x00 /* defines for PCI config */ diff --git a/drivers/isdn/hardware/mISDN/hfcmulti.c b/drivers/isdn/hardware/mISDN/hfcmulti.c index c63e2f49da8..97f4708b387 100644 --- a/drivers/isdn/hardware/mISDN/hfcmulti.c +++ b/drivers/isdn/hardware/mISDN/hfcmulti.c @@ -133,6 +133,12 @@ * Give the value of the clock control register (A_ST_CLK_DLY) * of the S/T interfaces in TE mode. * This register is needed for the TBR3 certification, so don't change it. + * + * clock: + * NOTE: only one clock value must be given once + * Selects interface with clock source for mISDN and applications. + * Set to card number starting with 1. Set to -1 to disable. + * By default, the first card is used as clock source. */ /* @@ -140,7 +146,7 @@ * #define HFC_REGISTER_DEBUG */ -static const char *hfcmulti_revision = "2.02"; +#define HFC_MULTI_VERSION "2.03" #include <linux/module.h> #include <linux/pci.h> @@ -165,10 +171,6 @@ static LIST_HEAD(HFClist); static spinlock_t HFClock; /* global hfc list lock */ static void ph_state_change(struct dchannel *); -static void (*hfc_interrupt)(void); -static void (*register_interrupt)(void); -static int (*unregister_interrupt)(void); -static int interrupt_registered; static struct hfc_multi *syncmaster; static int plxsd_master; /* if we have a master card (yet) */ @@ -184,7 +186,6 @@ static int nt_t1_count[] = { 3840, 1920, 960, 480, 240, 120, 60, 30 }; #define CLKDEL_TE 0x0f /* CLKDEL in TE mode */ #define CLKDEL_NT 0x6c /* CLKDEL in NT mode (0x60 MUST be included!) */ -static u_char silence = 0xff; /* silence by LAW */ #define DIP_4S 0x1 /* DIP Switches for Beronet 1S/2S/4S cards */ #define DIP_8S 0x2 /* DIP Switches for Beronet 8S+ cards */ @@ -195,12 +196,13 @@ static u_char silence = 0xff; /* silence by LAW */ */ static uint type[MAX_CARDS]; -static uint pcm[MAX_CARDS]; -static uint dslot[MAX_CARDS]; +static int pcm[MAX_CARDS]; +static int dslot[MAX_CARDS]; static uint iomode[MAX_CARDS]; static uint port[MAX_PORTS]; static uint debug; static uint poll; +static int clock; static uint timer; static uint clockdelay_te = CLKDEL_TE; static uint clockdelay_nt = CLKDEL_NT; @@ -209,14 +211,16 @@ static int HFC_cnt, Port_cnt, PCM_cnt = 99; MODULE_AUTHOR("Andreas Eversberg"); MODULE_LICENSE("GPL"); +MODULE_VERSION(HFC_MULTI_VERSION); module_param(debug, uint, S_IRUGO | S_IWUSR); module_param(poll, uint, S_IRUGO | S_IWUSR); +module_param(clock, int, S_IRUGO | S_IWUSR); module_param(timer, uint, S_IRUGO | S_IWUSR); module_param(clockdelay_te, uint, S_IRUGO | S_IWUSR); module_param(clockdelay_nt, uint, S_IRUGO | S_IWUSR); module_param_array(type, uint, NULL, S_IRUGO | S_IWUSR); -module_param_array(pcm, uint, NULL, S_IRUGO | S_IWUSR); -module_param_array(dslot, uint, NULL, S_IRUGO | S_IWUSR); +module_param_array(pcm, int, NULL, S_IRUGO | S_IWUSR); +module_param_array(dslot, int, NULL, S_IRUGO | S_IWUSR); module_param_array(iomode, uint, NULL, S_IRUGO | S_IWUSR); module_param_array(port, uint, NULL, S_IRUGO | S_IWUSR); @@ -1419,19 +1423,6 @@ controller_fail: HFC_outb(hc, R_TI_WD, poll_timer); hc->hw.r_irqmsk_misc |= V_TI_IRQMSK; - /* - * set up 125us interrupt, only if function pointer is available - * and module parameter timer is set - */ - if (timer && hfc_interrupt && register_interrupt) { - /* only one chip should use this interrupt */ - timer = 0; - interrupt_registered = 1; - hc->hw.r_irqmsk_misc |= V_PROC_IRQMSK; - /* deactivate other interrupts in ztdummy */ - register_interrupt(); - } - /* set E1 state machine IRQ */ if (hc->type == 1) hc->hw.r_irqmsk_misc |= V_STA_IRQMSK; @@ -1991,6 +1982,17 @@ next_frame: return; /* no data */ } + /* "fill fifo if empty" feature */ + if (bch && test_bit(FLG_FILLEMPTY, &bch->Flags) + && !test_bit(FLG_HDLC, &bch->Flags) && z2 == z1) { + if (debug & DEBUG_HFCMULTI_FILL) + printk(KERN_DEBUG "%s: buffer empty, so we have " + "underrun\n", __func__); + /* fill buffer, to prevent future underrun */ + hc->write_fifo(hc, hc->silence_data, poll >> 1); + Zspace -= (poll >> 1); + } + /* if audio data and connected slot */ if (bch && (!test_bit(FLG_HDLC, &bch->Flags)) && (!*txpending) && slot_tx >= 0) { @@ -2027,7 +2029,6 @@ next_frame: __func__, hc->id + 1, ch, Zspace, z1, z2, ii-i, len-i, temp ? "HDLC":"TRANS"); - /* Have to prep the audio data */ hc->write_fifo(hc, d, ii - i); *idxp = ii; @@ -2066,7 +2067,7 @@ next_frame: * no more data at all. this prevents sending an undefined value. */ if (bch && test_bit(FLG_TRANSPARENT, &bch->Flags)) - HFC_outb_nodebug(hc, A_FIFO_DATA0_NOINC, silence); + HFC_outb_nodebug(hc, A_FIFO_DATA0_NOINC, hc->silence); } @@ -2583,7 +2584,6 @@ hfcmulti_interrupt(int intno, void *dev_id) static int iq1 = 0, iq2 = 0, iq3 = 0, iq4 = 0, iq5 = 0, iq6 = 0, iqcnt = 0; #endif - static int count; struct hfc_multi *hc = dev_id; struct dchannel *dch; u_char r_irq_statech, status, r_irq_misc, r_irq_oview; @@ -2637,6 +2637,7 @@ hfcmulti_interrupt(int intno, void *dev_id) iqcnt = 0; } #endif + if (!r_irq_statech && !(status & (V_DTMF_STA | V_LOST_STA | V_EXT_IRQSTA | V_MISC_IRQSTA | V_FR_IRQSTA))) { @@ -2657,6 +2658,7 @@ hfcmulti_interrupt(int intno, void *dev_id) if (status & V_MISC_IRQSTA) { /* misc IRQ */ r_irq_misc = HFC_inb_nodebug(hc, R_IRQ_MISC); + r_irq_misc &= hc->hw.r_irqmsk_misc; /* ignore disabled irqs */ if (r_irq_misc & V_STA_IRQ) { if (hc->type == 1) { /* state machine */ @@ -2691,23 +2693,20 @@ hfcmulti_interrupt(int intno, void *dev_id) plxsd_checksync(hc, 0); } } - if (r_irq_misc & V_TI_IRQ) + if (r_irq_misc & V_TI_IRQ) { + if (hc->iclock_on) + mISDN_clock_update(hc->iclock, poll, NULL); handle_timer_irq(hc); + } if (r_irq_misc & V_DTMF_IRQ) { - /* -> DTMF IRQ */ hfcmulti_dtmf(hc); } - /* TODO: REPLACE !!!! 125 us Interrupts are not acceptable */ if (r_irq_misc & V_IRQ_PROC) { - /* IRQ every 125us */ - count++; - /* generate 1kHz signal */ - if (count == 8) { - if (hfc_interrupt) - hfc_interrupt(); - count = 0; - } + static int irq_proc_cnt; + if (!irq_proc_cnt++) + printk(KERN_WARNING "%s: got V_IRQ_PROC -" + " this should not happen\n", __func__); } } @@ -2954,7 +2953,7 @@ mode_hfcmulti(struct hfc_multi *hc, int ch, int protocol, int slot_tx, HFC_outb(hc, R_INC_RES_FIFO, V_RES_F); HFC_wait(hc); /* tx silence */ - HFC_outb_nodebug(hc, A_FIFO_DATA0_NOINC, silence); + HFC_outb_nodebug(hc, A_FIFO_DATA0_NOINC, hc->silence); HFC_outb(hc, R_SLOT, (((ch / 4) * 8) + ((ch % 4) * 4)) << 1); HFC_outb(hc, A_SL_CFG, 0x80 | 0x20 | (ch << 1)); @@ -2969,7 +2968,7 @@ mode_hfcmulti(struct hfc_multi *hc, int ch, int protocol, int slot_tx, HFC_outb(hc, R_INC_RES_FIFO, V_RES_F); HFC_wait(hc); /* tx silence */ - HFC_outb_nodebug(hc, A_FIFO_DATA0_NOINC, silence); + HFC_outb_nodebug(hc, A_FIFO_DATA0_NOINC, hc->silence); /* enable RX fifo */ HFC_outb(hc, R_FIFO, (ch<<1)|1); HFC_wait(hc); @@ -3461,7 +3460,7 @@ channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq) switch (cq->op) { case MISDN_CTRL_GETOP: cq->op = MISDN_CTRL_HFC_OP | MISDN_CTRL_HW_FEATURES_OP - | MISDN_CTRL_RX_OFF; + | MISDN_CTRL_RX_OFF | MISDN_CTRL_FILL_EMPTY; break; case MISDN_CTRL_RX_OFF: /* turn off / on rx stream */ hc->chan[bch->slot].rx_off = !!cq->p1; @@ -3476,6 +3475,12 @@ channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq) printk(KERN_DEBUG "%s: RX_OFF request (nr=%d off=%d)\n", __func__, bch->nr, hc->chan[bch->slot].rx_off); break; + case MISDN_CTRL_FILL_EMPTY: /* fill fifo, if empty */ + test_and_set_bit(FLG_FILLEMPTY, &bch->Flags); + if (debug & DEBUG_HFCMULTI_MSG) + printk(KERN_DEBUG "%s: FILL_EMPTY request (nr=%d " + "off=%d)\n", __func__, bch->nr, !!cq->p1); + break; case MISDN_CTRL_HW_FEATURES: /* fill features structure */ if (debug & DEBUG_HFCMULTI_MSG) printk(KERN_DEBUG "%s: HW_FEATURE request\n", @@ -3992,6 +3997,7 @@ open_bchannel(struct hfc_multi *hc, struct dchannel *dch, } if (test_and_set_bit(FLG_OPEN, &bch->Flags)) return -EBUSY; /* b-channel can be only open once */ + test_and_clear_bit(FLG_FILLEMPTY, &bch->Flags); bch->ch.protocol = rq->protocol; hc->chan[ch].rx_off = 0; rq->ch = &bch->ch; @@ -4081,6 +4087,15 @@ hfcm_dctrl(struct mISDNchannel *ch, u_int cmd, void *arg) return err; } +static int +clockctl(void *priv, int enable) +{ + struct hfc_multi *hc = priv; + + hc->iclock_on = enable; + return 0; +} + /* * initialize the card */ @@ -4495,10 +4510,14 @@ release_card(struct hfc_multi *hc) printk(KERN_WARNING "%s: release card (%d) entered\n", __func__, hc->id); + /* unregister clock source */ + if (hc->iclock) + mISDN_unregister_clock(hc->iclock); + + /* disable irq */ spin_lock_irqsave(&hc->lock, flags); disable_hwirq(hc); spin_unlock_irqrestore(&hc->lock, flags); - udelay(1000); /* dimm leds */ @@ -4699,7 +4718,7 @@ init_e1_port(struct hfc_multi *hc, struct hm_map *m) } else hc->chan[hc->dslot].jitter = 2; /* default */ snprintf(name, MISDN_MAX_IDLEN - 1, "hfc-e1.%d", HFC_cnt + 1); - ret = mISDN_register_device(&dch->dev, name); + ret = mISDN_register_device(&dch->dev, &hc->pci_dev->dev, name); if (ret) goto free_chan; hc->created[0] = 1; @@ -4807,9 +4826,9 @@ init_multi_port(struct hfc_multi *hc, int pt) test_and_set_bit(HFC_CFG_DIS_ECHANNEL, &hc->chan[i + 2].cfg); } - snprintf(name, MISDN_MAX_IDLEN - 1, "hfc-%ds.%d/%d", + snprintf(name, MISDN_MAX_IDLEN - 1, "hfc-%ds.%d-%d", hc->type, HFC_cnt + 1, pt + 1); - ret = mISDN_register_device(&dch->dev, name); + ret = mISDN_register_device(&dch->dev, &hc->pci_dev->dev, name); if (ret) goto free_chan; hc->created[pt] = 1; @@ -4828,6 +4847,7 @@ hfcmulti_init(struct pci_dev *pdev, const struct pci_device_id *ent) struct hfc_multi *hc; u_long flags; u_char dips = 0, pmj = 0; /* dip settings, port mode Jumpers */ + int i; if (HFC_cnt >= MAX_CARDS) { printk(KERN_ERR "too many cards (max=%d).\n", @@ -4861,11 +4881,11 @@ hfcmulti_init(struct pci_dev *pdev, const struct pci_device_id *ent) hc->id = HFC_cnt; hc->pcm = pcm[HFC_cnt]; hc->io_mode = iomode[HFC_cnt]; - if (dslot[HFC_cnt] < 0) { + if (dslot[HFC_cnt] < 0 && hc->type == 1) { hc->dslot = 0; printk(KERN_INFO "HFC-E1 card has disabled D-channel, but " "31 B-channels\n"); - } if (dslot[HFC_cnt] > 0 && dslot[HFC_cnt] < 32) { + } if (dslot[HFC_cnt] > 0 && dslot[HFC_cnt] < 32 && hc->type == 1) { hc->dslot = dslot[HFC_cnt]; printk(KERN_INFO "HFC-E1 card has alternating D-channel on " "time slot %d\n", dslot[HFC_cnt]); @@ -4876,9 +4896,17 @@ hfcmulti_init(struct pci_dev *pdev, const struct pci_device_id *ent) hc->masterclk = -1; if (type[HFC_cnt] & 0x100) { test_and_set_bit(HFC_CHIP_ULAW, &hc->chip); - silence = 0xff; /* ulaw silence */ + hc->silence = 0xff; /* ulaw silence */ } else - silence = 0x2a; /* alaw silence */ + hc->silence = 0x2a; /* alaw silence */ + if ((poll >> 1) > sizeof(hc->silence_data)) { + printk(KERN_ERR "HFCMULTI error: silence_data too small, " + "please fix\n"); + return -EINVAL; + } + for (i = 0; i < (poll >> 1); i++) + hc->silence_data[i] = hc->silence; + if (!(type[HFC_cnt] & 0x200)) test_and_set_bit(HFC_CHIP_DTMF, &hc->chip); @@ -4945,9 +4973,7 @@ hfcmulti_init(struct pci_dev *pdev, const struct pci_device_id *ent) switch (m->dip_type) { case DIP_4S: /* - * get DIP Setting for beroNet 1S/2S/4S cards - * check if Port Jumper config matches - * module param 'protocol' + * Get DIP setting for beroNet 1S/2S/4S cards * DIP Setting: (collect GPIO 13/14/15 (R_GPIO_IN1) + * GPI 19/23 (R_GPI_IN2)) */ @@ -4966,9 +4992,8 @@ hfcmulti_init(struct pci_dev *pdev, const struct pci_device_id *ent) break; case DIP_8S: /* - * get DIP Setting for beroNet 8S0+ cards - * - * enable PCI auxbridge function + * Get DIP Setting for beroNet 8S0+ cards + * Enable PCI auxbridge function */ HFC_outb(hc, R_BRG_PCM_CFG, 1 | V_PCM_CLK); /* prepare access to auxport */ @@ -5003,6 +5028,10 @@ hfcmulti_init(struct pci_dev *pdev, const struct pci_device_id *ent) list_add_tail(&hc->list, &HFClist); spin_unlock_irqrestore(&HFClock, flags); + /* use as clock source */ + if (clock == HFC_cnt + 1) + hc->iclock = mISDN_register_clock("HFCMulti", 0, clockctl, hc); + /* initialize hardware */ ret_err = init_card(hc); if (ret_err) { @@ -5137,8 +5166,7 @@ static struct pci_device_id hfmultipci_ids[] __devinitdata = { { PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_HFC8S, PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_HFC8S, 0, 0, H(14)}, /* old Eval */ { PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_HFC8S, PCI_VENDOR_ID_CCD, - PCI_SUBDEVICE_ID_CCD_IOB8STR, 0, 0, H(15)}, - /* IOB8ST Recording */ + PCI_SUBDEVICE_ID_CCD_IOB8STR, 0, 0, H(15)}, /* IOB8ST Recording */ { PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_HFC8S, PCI_VENDOR_ID_CCD, PCI_SUBDEVICE_ID_CCD_IOB8ST, 0, 0, H(16)}, /* IOB8ST */ { PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_HFC8S, PCI_VENDOR_ID_CCD, @@ -5188,18 +5216,16 @@ hfcmulti_probe(struct pci_dev *pdev, const struct pci_device_id *ent) struct hm_map *m = (struct hm_map *)ent->driver_data; int ret; - if (m == NULL) { - if (ent->vendor == PCI_VENDOR_ID_CCD) - if (ent->device == PCI_DEVICE_ID_CCD_HFC4S || - ent->device == PCI_DEVICE_ID_CCD_HFC8S || - ent->device == PCI_DEVICE_ID_CCD_HFCE1) - printk(KERN_ERR - "unknown HFC multiport controller " - "(vendor:%x device:%x subvendor:%x " - "subdevice:%x) Please contact the " - "driver maintainer for support.\n", - ent->vendor, ent->device, - ent->subvendor, ent->subdevice); + if (m == NULL && ent->vendor == PCI_VENDOR_ID_CCD && ( + ent->device == PCI_DEVICE_ID_CCD_HFC4S || + ent->device == PCI_DEVICE_ID_CCD_HFC8S || + ent->device == PCI_DEVICE_ID_CCD_HFCE1)) { + printk(KERN_ERR + "Unknown HFC multiport controller (vendor:%x device:%x " + "subvendor:%x subdevice:%x)\n", ent->vendor, ent->device, + ent->subvendor, ent->subdevice); + printk(KERN_ERR + "Please contact the driver maintainer for support.\n"); return -ENODEV; } ret = hfcmulti_init(pdev, ent); @@ -5222,22 +5248,9 @@ HFCmulti_cleanup(void) { struct hfc_multi *card, *next; - /* unload interrupt function symbol */ - if (hfc_interrupt) - symbol_put(ztdummy_extern_interrupt); - if (register_interrupt) - symbol_put(ztdummy_register_interrupt); - if (unregister_interrupt) { - if (interrupt_registered) { - interrupt_registered = 0; - unregister_interrupt(); - } - symbol_put(ztdummy_unregister_interrupt); - } - + /* get rid of all devices of this driver */ list_for_each_entry_safe(card, next, &HFClist, list) release_card(card); - /* get rid of all devices of this driver */ pci_unregister_driver(&hfcmultipci_driver); } @@ -5246,8 +5259,10 @@ HFCmulti_init(void) { int err; + printk(KERN_INFO "mISDN: HFC-multi driver %s\n", HFC_MULTI_VERSION); + #ifdef IRQ_DEBUG - printk(KERN_ERR "%s: IRQ_DEBUG IS ENABLED!\n", __func__); + printk(KERN_DEBUG "%s: IRQ_DEBUG IS ENABLED!\n", __func__); #endif spin_lock_init(&HFClock); @@ -5256,22 +5271,11 @@ HFCmulti_init(void) if (debug & DEBUG_HFCMULTI_INIT) printk(KERN_DEBUG "%s: init entered\n", __func__); - hfc_interrupt = symbol_get(ztdummy_extern_interrupt); - register_interrupt = symbol_get(ztdummy_register_interrupt); - unregister_interrupt = symbol_get(ztdummy_unregister_interrupt); - printk(KERN_INFO "mISDN: HFC-multi driver %s\n", - hfcmulti_revision); - switch (poll) { case 0: poll_timer = 6; poll = 128; break; - /* - * wenn dieses break nochmal verschwindet, - * gibt es heisse ohren :-) - * "without the break you will get hot ears ???" - */ case 8: poll_timer = 2; break; @@ -5298,20 +5302,12 @@ HFCmulti_init(void) } + if (!clock) + clock = 1; + err = pci_register_driver(&hfcmultipci_driver); if (err < 0) { printk(KERN_ERR "error registering pci driver: %x\n", err); - if (hfc_interrupt) - symbol_put(ztdummy_extern_interrupt); - if (register_interrupt) - symbol_put(ztdummy_register_interrupt); - if (unregister_interrupt) { - if (interrupt_registered) { - interrupt_registered = 0; - unregister_interrupt(); - } - symbol_put(ztdummy_unregister_interrupt); - } return err; } return 0; diff --git a/drivers/isdn/hardware/mISDN/hfcpci.c b/drivers/isdn/hardware/mISDN/hfcpci.c index cd8302af40e..917bf41a293 100644 --- a/drivers/isdn/hardware/mISDN/hfcpci.c +++ b/drivers/isdn/hardware/mISDN/hfcpci.c @@ -23,6 +23,25 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * + * Module options: + * + * debug: + * NOTE: only one poll value must be given for all cards + * See hfc_pci.h for debug flags. + * + * poll: + * NOTE: only one poll value must be given for all cards + * Give the number of samples for each fifo process. + * By default 128 is used. Decrease to reduce delay, increase to + * reduce cpu load. If unsure, don't mess with it! + * A value of 128 will use controller's interrupt. Other values will + * use kernel timer, because the controller will not allow lower values + * than 128. + * Also note that the value depends on the kernel timer frequency. + * If kernel uses a frequency of 1000 Hz, steps of 8 samples are possible. + * If the kernel uses 100 Hz, steps of 80 samples are possible. + * If the kernel uses 300 Hz, steps of about 26 samples are possible. + * */ #include <linux/module.h> @@ -34,16 +53,16 @@ static const char *hfcpci_revision = "2.0"; -#define MAX_CARDS 8 static int HFC_cnt; static uint debug; +static uint poll, tics; +struct timer_list hfc_tl; +u32 hfc_jiffies; MODULE_AUTHOR("Karsten Keil"); MODULE_LICENSE("GPL"); module_param(debug, uint, 0); - -static LIST_HEAD(HFClist); -static DEFINE_RWLOCK(HFClock); +module_param(poll, uint, S_IRUGO | S_IWUSR); enum { HFC_CCD_2BD0, @@ -114,7 +133,6 @@ struct hfcPCI_hw { struct hfc_pci { - struct list_head list; u_char subtype; u_char chanlimit; u_char initdone; @@ -520,9 +538,9 @@ receive_dmsg(struct hfc_pci *hc) } /* - * check for transparent receive data and read max one threshold size if avail + * check for transparent receive data and read max one 'poll' size if avail */ -static int +static void hfcpci_empty_fifo_trans(struct bchannel *bch, struct bzfifo *bz, u_char *bdata) { __le16 *z1r, *z2r; @@ -534,17 +552,19 @@ hfcpci_empty_fifo_trans(struct bchannel *bch, struct bzfifo *bz, u_char *bdata) fcnt = le16_to_cpu(*z1r) - le16_to_cpu(*z2r); if (!fcnt) - return 0; /* no data avail */ + return; /* no data avail */ if (fcnt <= 0) fcnt += B_FIFO_SIZE; /* bytes actually buffered */ - if (fcnt > HFCPCI_BTRANS_THRESHOLD) - fcnt = HFCPCI_BTRANS_THRESHOLD; /* limit size */ - new_z2 = le16_to_cpu(*z2r) + fcnt; /* new position in fifo */ if (new_z2 >= (B_FIFO_SIZE + B_SUB_VAL)) new_z2 -= B_FIFO_SIZE; /* buffer wrap */ + if (fcnt > MAX_DATA_SIZE) { /* flush, if oversized */ + *z2r = cpu_to_le16(new_z2); /* new position */ + return; + } + bch->rx_skb = mI_alloc_skb(fcnt, GFP_ATOMIC); if (bch->rx_skb) { ptr = skb_put(bch->rx_skb, fcnt); @@ -569,7 +589,6 @@ hfcpci_empty_fifo_trans(struct bchannel *bch, struct bzfifo *bz, u_char *bdata) printk(KERN_WARNING "HFCPCI: receive out of memory\n"); *z2r = cpu_to_le16(new_z2); /* new position */ - return 1; } /* @@ -580,12 +599,11 @@ main_rec_hfcpci(struct bchannel *bch) { struct hfc_pci *hc = bch->hw; int rcnt, real_fifo; - int receive, count = 5; + int receive = 0, count = 5; struct bzfifo *bz; u_char *bdata; struct zt *zp; - if ((bch->nr & 2) && (!hc->hw.bswapped)) { bz = &((union fifo_area *)(hc->hw.fifos))->b_chans.rxbz_b2; bdata = ((union fifo_area *)(hc->hw.fifos))->b_chans.rxdat_b2; @@ -625,9 +643,10 @@ Begin: receive = 1; else receive = 0; - } else if (test_bit(FLG_TRANSPARENT, &bch->Flags)) - receive = hfcpci_empty_fifo_trans(bch, bz, bdata); - else + } else if (test_bit(FLG_TRANSPARENT, &bch->Flags)) { + hfcpci_empty_fifo_trans(bch, bz, bdata); + return; + } else receive = 0; if (count && receive) goto Begin; @@ -751,11 +770,41 @@ hfcpci_fill_fifo(struct bchannel *bch) /* fcnt contains available bytes in fifo */ fcnt = B_FIFO_SIZE - fcnt; /* remaining bytes to send (bytes in fifo) */ + + /* "fill fifo if empty" feature */ + if (test_bit(FLG_FILLEMPTY, &bch->Flags) && !fcnt) { + /* printk(KERN_DEBUG "%s: buffer empty, so we have " + "underrun\n", __func__); */ + /* fill buffer, to prevent future underrun */ + count = HFCPCI_FILLEMPTY; + new_z1 = le16_to_cpu(*z1t) + count; + /* new buffer Position */ + if (new_z1 >= (B_FIFO_SIZE + B_SUB_VAL)) + new_z1 -= B_FIFO_SIZE; /* buffer wrap */ + dst = bdata + (le16_to_cpu(*z1t) - B_SUB_VAL); + maxlen = (B_FIFO_SIZE + B_SUB_VAL) - le16_to_cpu(*z1t); + /* end of fifo */ + if (bch->debug & DEBUG_HW_BFIFO) + printk(KERN_DEBUG "hfcpci_FFt fillempty " + "fcnt(%d) maxl(%d) nz1(%x) dst(%p)\n", + fcnt, maxlen, new_z1, dst); + fcnt += count; + if (maxlen > count) + maxlen = count; /* limit size */ + memset(dst, 0x2a, maxlen); /* first copy */ + count -= maxlen; /* remaining bytes */ + if (count) { + dst = bdata; /* start of buffer */ + memset(dst, 0x2a, count); + } + *z1t = cpu_to_le16(new_z1); /* now send data */ + } + next_t_frame: count = bch->tx_skb->len - bch->tx_idx; - /* maximum fill shall be HFCPCI_BTRANS_MAX */ - if (count > HFCPCI_BTRANS_MAX - fcnt) - count = HFCPCI_BTRANS_MAX - fcnt; + /* maximum fill shall be poll*2 */ + if (count > (poll << 1) - fcnt) + count = (poll << 1) - fcnt; if (count <= 0) return; /* data is suitable for fifo */ @@ -1135,37 +1184,37 @@ hfcpci_int(int intno, void *dev_id) val &= ~0x80; Write_hfc(hc, HFCPCI_CTMT, hc->hw.ctmt | HFCPCI_CLTIMER); } - if (val & 0x08) { + if (val & 0x08) { /* B1 rx */ bch = Sel_BCS(hc, hc->hw.bswapped ? 2 : 1); if (bch) main_rec_hfcpci(bch); else if (hc->dch.debug) printk(KERN_DEBUG "hfcpci spurious 0x08 IRQ\n"); } - if (val & 0x10) { + if (val & 0x10) { /* B2 rx */ bch = Sel_BCS(hc, 2); if (bch) main_rec_hfcpci(bch); else if (hc->dch.debug) printk(KERN_DEBUG "hfcpci spurious 0x10 IRQ\n"); } - if (val & 0x01) { + if (val & 0x01) { /* B1 tx */ bch = Sel_BCS(hc, hc->hw.bswapped ? 2 : 1); if (bch) tx_birq(bch); else if (hc->dch.debug) printk(KERN_DEBUG "hfcpci spurious 0x01 IRQ\n"); } - if (val & 0x02) { + if (val & 0x02) { /* B2 tx */ bch = Sel_BCS(hc, 2); if (bch) tx_birq(bch); else if (hc->dch.debug) printk(KERN_DEBUG "hfcpci spurious 0x02 IRQ\n"); } - if (val & 0x20) + if (val & 0x20) /* D rx */ receive_dmsg(hc); - if (val & 0x04) { /* dframe transmitted */ + if (val & 0x04) { /* D tx */ if (test_and_clear_bit(FLG_BUSY_TIMER, &hc->dch.Flags)) del_timer(&hc->dch.timer); tx_dirq(&hc->dch); @@ -1283,14 +1332,16 @@ mode_hfcpci(struct bchannel *bch, int bc, int protocol) } if (fifo2 & 2) { hc->hw.fifo_en |= HFCPCI_FIFOEN_B2; - hc->hw.int_m1 |= (HFCPCI_INTS_B2TRANS + - HFCPCI_INTS_B2REC); + if (!tics) + hc->hw.int_m1 |= (HFCPCI_INTS_B2TRANS + + HFCPCI_INTS_B2REC); hc->hw.ctmt |= 2; hc->hw.conn &= ~0x18; } else { hc->hw.fifo_en |= HFCPCI_FIFOEN_B1; - hc->hw.int_m1 |= (HFCPCI_INTS_B1TRANS + - HFCPCI_INTS_B1REC); + if (!tics) + hc->hw.int_m1 |= (HFCPCI_INTS_B1TRANS + + HFCPCI_INTS_B1REC); hc->hw.ctmt |= 1; hc->hw.conn &= ~0x03; } @@ -1398,7 +1449,8 @@ set_hfcpci_rxtest(struct bchannel *bch, int protocol, int chan) if (chan & 2) { hc->hw.sctrl_r |= SCTRL_B2_ENA; hc->hw.fifo_en |= HFCPCI_FIFOEN_B2RX; - hc->hw.int_m1 |= HFCPCI_INTS_B2REC; + if (!tics) + hc->hw.int_m1 |= HFCPCI_INTS_B2REC; hc->hw.ctmt |= 2; hc->hw.conn &= ~0x18; #ifdef REVERSE_BITORDER @@ -1407,7 +1459,8 @@ set_hfcpci_rxtest(struct bchannel *bch, int protocol, int chan) } else { hc->hw.sctrl_r |= SCTRL_B1_ENA; hc->hw.fifo_en |= HFCPCI_FIFOEN_B1RX; - hc->hw.int_m1 |= HFCPCI_INTS_B1REC; + if (!tics) + hc->hw.int_m1 |= HFCPCI_INTS_B1REC; hc->hw.ctmt |= 1; hc->hw.conn &= ~0x03; #ifdef REVERSE_BITORDER @@ -1481,11 +1534,17 @@ deactivate_bchannel(struct bchannel *bch) static int channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq) { - int ret = 0; + int ret = 0; switch (cq->op) { case MISDN_CTRL_GETOP: - cq->op = 0; + cq->op = MISDN_CTRL_FILL_EMPTY; + break; + case MISDN_CTRL_FILL_EMPTY: /* fill fifo, if empty */ + test_and_set_bit(FLG_FILLEMPTY, &bch->Flags); + if (debug & DEBUG_HW_OPEN) + printk(KERN_DEBUG "%s: FILL_EMPTY request (nr=%d " + "off=%d)\n", __func__, bch->nr, !!cq->p1); break; default: printk(KERN_WARNING "%s: unknown Op %x\n", __func__, cq->op); @@ -1859,6 +1918,10 @@ open_dchannel(struct hfc_pci *hc, struct mISDNchannel *ch, hc->dch.dev.id, __builtin_return_address(0)); if (rq->protocol == ISDN_P_NONE) return -EINVAL; + if (rq->adr.channel == 1) { + /* TODO: E-Channel */ + return -EINVAL; + } if (!hc->initdone) { if (rq->protocol == ISDN_P_TE_S0) { err = create_l1(&hc->dch, hfc_l1callback); @@ -1874,6 +1937,11 @@ open_dchannel(struct hfc_pci *hc, struct mISDNchannel *ch, if (rq->protocol != ch->protocol) { if (hc->hw.protocol == ISDN_P_TE_S0) l1_event(hc->dch.l1, CLOSE_CHANNEL); + if (rq->protocol == ISDN_P_TE_S0) { + err = create_l1(&hc->dch, hfc_l1callback); + if (err) + return err; + } hc->hw.protocol = rq->protocol; ch->protocol = rq->protocol; hfcpci_setmode(hc); @@ -1903,6 +1971,7 @@ open_bchannel(struct hfc_pci *hc, struct channel_req *rq) bch = &hc->bch[rq->adr.channel - 1]; if (test_and_set_bit(FLG_OPEN, &bch->Flags)) return -EBUSY; /* b-channel can be only open once */ + test_and_clear_bit(FLG_FILLEMPTY, &bch->Flags); bch->ch.protocol = rq->protocol; rq->ch = &bch->ch; /* TODO: E-channel */ if (!try_module_get(THIS_MODULE)) @@ -1928,7 +1997,8 @@ hfc_dctrl(struct mISDNchannel *ch, u_int cmd, void *arg) switch (cmd) { case OPEN_CHANNEL: rq = arg; - if (rq->adr.channel == 0) + if ((rq->protocol == ISDN_P_TE_S0) || + (rq->protocol == ISDN_P_NT_S0)) err = open_dchannel(hc, ch, rq); else err = open_bchannel(hc, rq); @@ -2027,7 +2097,6 @@ release_card(struct hfc_pci *hc) { mISDN_freebchannel(&hc->bch[1]); mISDN_freebchannel(&hc->bch[0]); mISDN_freedchannel(&hc->dch); - list_del(&hc->list); pci_set_drvdata(hc->pdev, NULL); kfree(hc); } @@ -2037,12 +2106,8 @@ setup_card(struct hfc_pci *card) { int err = -EINVAL; u_int i; - u_long flags; char name[MISDN_MAX_IDLEN]; - if (HFC_cnt >= MAX_CARDS) - return -EINVAL; /* maybe better value */ - card->dch.debug = debug; spin_lock_init(&card->lock); mISDN_initdchannel(&card->dch, MAX_DFRAME_LEN_L1, ph_state); @@ -2068,13 +2133,10 @@ setup_card(struct hfc_pci *card) if (err) goto error; snprintf(name, MISDN_MAX_IDLEN - 1, "hfc-pci.%d", HFC_cnt + 1); - err = mISDN_register_device(&card->dch.dev, name); + err = mISDN_register_device(&card->dch.dev, &card->pdev->dev, name); if (err) goto error; HFC_cnt++; - write_lock_irqsave(&HFClock, flags); - list_add_tail(&card->list, &HFClist); - write_unlock_irqrestore(&HFClock, flags); printk(KERN_INFO "HFC %d cards installed\n", HFC_cnt); return 0; error: @@ -2210,15 +2272,12 @@ static void __devexit hfc_remove_pci(struct pci_dev *pdev) { struct hfc_pci *card = pci_get_drvdata(pdev); - u_long flags; - if (card) { - write_lock_irqsave(&HFClock, flags); + if (card) release_card(card); - write_unlock_irqrestore(&HFClock, flags); - } else + else if (debug) - printk(KERN_WARNING "%s: drvdata allready removed\n", + printk(KERN_WARNING "%s: drvdata already removed\n", __func__); } @@ -2230,25 +2289,97 @@ static struct pci_driver hfc_driver = { .id_table = hfc_ids, }; +static int +_hfcpci_softirq(struct device *dev, void *arg) +{ + struct hfc_pci *hc = dev_get_drvdata(dev); + struct bchannel *bch; + if (hc == NULL) + return 0; + + if (hc->hw.int_m2 & HFCPCI_IRQ_ENABLE) { + spin_lock(&hc->lock); + bch = Sel_BCS(hc, hc->hw.bswapped ? 2 : 1); + if (bch && bch->state == ISDN_P_B_RAW) { /* B1 rx&tx */ + main_rec_hfcpci(bch); + tx_birq(bch); + } + bch = Sel_BCS(hc, hc->hw.bswapped ? 1 : 2); + if (bch && bch->state == ISDN_P_B_RAW) { /* B2 rx&tx */ + main_rec_hfcpci(bch); + tx_birq(bch); + } + spin_unlock(&hc->lock); + } + return 0; +} + +static void +hfcpci_softirq(void *arg) +{ + (void) driver_for_each_device(&hfc_driver.driver, NULL, arg, + _hfcpci_softirq); + + /* if next event would be in the past ... */ + if ((s32)(hfc_jiffies + tics - jiffies) <= 0) + hfc_jiffies = jiffies + 1; + else + hfc_jiffies += tics; + hfc_tl.expires = hfc_jiffies; + add_timer(&hfc_tl); +} + static int __init HFC_init(void) { int err; + if (!poll) + poll = HFCPCI_BTRANS_THRESHOLD; + + if (poll != HFCPCI_BTRANS_THRESHOLD) { + tics = (poll * HZ) / 8000; + if (tics < 1) + tics = 1; + poll = (tics * 8000) / HZ; + if (poll > 256 || poll < 8) { + printk(KERN_ERR "%s: Wrong poll value %d not in range " + "of 8..256.\n", __func__, poll); + err = -EINVAL; + return err; + } + } + if (poll != HFCPCI_BTRANS_THRESHOLD) { + printk(KERN_INFO "%s: Using alternative poll value of %d\n", + __func__, poll); + hfc_tl.function = (void *)hfcpci_softirq; + hfc_tl.data = 0; + init_timer(&hfc_tl); + hfc_tl.expires = jiffies + tics; + hfc_jiffies = hfc_tl.expires; + add_timer(&hfc_tl); + } else + tics = 0; /* indicate the use of controller's timer */ + err = pci_register_driver(&hfc_driver); + if (err) { + if (timer_pending(&hfc_tl)) + del_timer(&hfc_tl); + } + return err; } static void __exit HFC_cleanup(void) { - struct hfc_pci *card, *next; + if (timer_pending(&hfc_tl)) + del_timer(&hfc_tl); - list_for_each_entry_safe(card, next, &HFClist, list) { - release_card(card); - } pci_unregister_driver(&hfc_driver); } module_init(HFC_init); module_exit(HFC_cleanup); + +MODULE_DEVICE_TABLE(pci, hfc_ids); diff --git a/drivers/isdn/hardware/mISDN/hfcsusb.c b/drivers/isdn/hardware/mISDN/hfcsusb.c new file mode 100644 index 00000000000..ba6925fbf38 --- /dev/null +++ b/drivers/isdn/hardware/mISDN/hfcsusb.c @@ -0,0 +1,2196 @@ +/* hfcsusb.c + * mISDN driver for Colognechip HFC-S USB chip + * + * Copyright 2001 by Peter Sprenger (sprenger@moving-bytes.de) + * Copyright 2008 by Martin Bachem (info@bachem-it.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * 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. + * + * + * module params + * debug=<n>, default=0, with n=0xHHHHGGGG + * H - l1 driver flags described in hfcsusb.h + * G - common mISDN debug flags described at mISDNhw.h + * + * poll=<n>, default 128 + * n : burst size of PH_DATA_IND at transparent rx data + * + */ + +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/usb.h> +#include <linux/mISDNhw.h> +#include "hfcsusb.h" + +const char *hfcsusb_rev = "Revision: 0.3.3 (socket), 2008-11-05"; + +static unsigned int debug; +static int poll = DEFAULT_TRANSP_BURST_SZ; + +static LIST_HEAD(HFClist); +static DEFINE_RWLOCK(HFClock); + + +MODULE_AUTHOR("Martin Bachem"); +MODULE_LICENSE("GPL"); +module_param(debug, uint, S_IRUGO | S_IWUSR); +module_param(poll, int, 0); + +static int hfcsusb_cnt; + +/* some function prototypes */ +static void hfcsusb_ph_command(struct hfcsusb *hw, u_char command); +static void release_hw(struct hfcsusb *hw); +static void reset_hfcsusb(struct hfcsusb *hw); +static void setPortMode(struct hfcsusb *hw); +static void hfcsusb_start_endpoint(struct hfcsusb *hw, int channel); +static void hfcsusb_stop_endpoint(struct hfcsusb *hw, int channel); +static int hfcsusb_setup_bch(struct bchannel *bch, int protocol); +static void deactivate_bchannel(struct bchannel *bch); +static void hfcsusb_ph_info(struct hfcsusb *hw); + +/* start next background transfer for control channel */ +static void +ctrl_start_transfer(struct hfcsusb *hw) +{ + if (debug & DBG_HFC_CALL_TRACE) + printk(KERN_DEBUG "%s: %s\n", hw->name, __func__); + + if (hw->ctrl_cnt) { + hw->ctrl_urb->pipe = hw->ctrl_out_pipe; + hw->ctrl_urb->setup_packet = (u_char *)&hw->ctrl_write; + hw->ctrl_urb->transfer_buffer = NULL; + hw->ctrl_urb->transfer_buffer_length = 0; + hw->ctrl_write.wIndex = + cpu_to_le16(hw->ctrl_buff[hw->ctrl_out_idx].hfcs_reg); + hw->ctrl_write.wValue = + cpu_to_le16(hw->ctrl_buff[hw->ctrl_out_idx].reg_val); + + usb_submit_urb(hw->ctrl_urb, GFP_ATOMIC); + } +} + +/* + * queue a control transfer request to write HFC-S USB + * chip register using CTRL resuest queue + */ +static int write_reg(struct hfcsusb *hw, __u8 reg, __u8 val) +{ + struct ctrl_buf *buf; + + if (debug & DBG_HFC_CALL_TRACE) + printk(KERN_DEBUG "%s: %s reg(0x%02x) val(0x%02x)\n", + hw->name, __func__, reg, val); + + spin_lock(&hw->ctrl_lock); + if (hw->ctrl_cnt >= HFC_CTRL_BUFSIZE) + return 1; + buf = &hw->ctrl_buff[hw->ctrl_in_idx]; + buf->hfcs_reg = reg; + buf->reg_val = val; + if (++hw->ctrl_in_idx >= HFC_CTRL_BUFSIZE) + hw->ctrl_in_idx = 0; + if (++hw->ctrl_cnt == 1) + ctrl_start_transfer(hw); + spin_unlock(&hw->ctrl_lock); + + return 0; +} + +/* control completion routine handling background control cmds */ +static void +ctrl_complete(struct urb *urb) +{ + struct hfcsusb *hw = (struct hfcsusb *) urb->context; + struct ctrl_buf *buf; + + if (debug & DBG_HFC_CALL_TRACE) + printk(KERN_DEBUG "%s: %s\n", hw->name, __func__); + + urb->dev = hw->dev; + if (hw->ctrl_cnt) { + buf = &hw->ctrl_buff[hw->ctrl_out_idx]; + hw->ctrl_cnt--; /* decrement actual count */ + if (++hw->ctrl_out_idx >= HFC_CTRL_BUFSIZE) + hw->ctrl_out_idx = 0; /* pointer wrap */ + + ctrl_start_transfer(hw); /* start next transfer */ + } +} + +/* handle LED bits */ +static void +set_led_bit(struct hfcsusb *hw, signed short led_bits, int set_on) +{ + if (set_on) { + if (led_bits < 0) + hw->led_state &= ~abs(led_bits); + else + hw->led_state |= led_bits; + } else { + if (led_bits < 0) + hw->led_state |= abs(led_bits); + else + hw->led_state &= ~led_bits; + } +} + +/* handle LED requests */ +static void +handle_led(struct hfcsusb *hw, int event) +{ + struct hfcsusb_vdata *driver_info = (struct hfcsusb_vdata *) + hfcsusb_idtab[hw->vend_idx].driver_info; + __u8 tmpled; + + if (driver_info->led_scheme == LED_OFF) + return; + tmpled = hw->led_state; + + switch (event) { + case LED_POWER_ON: + set_led_bit(hw, driver_info->led_bits[0], 1); + set_led_bit(hw, driver_info->led_bits[1], 0); + set_led_bit(hw, driver_info->led_bits[2], 0); + set_led_bit(hw, driver_info->led_bits[3], 0); + break; + case LED_POWER_OFF: + set_led_bit(hw, driver_info->led_bits[0], 0); + set_led_bit(hw, driver_info->led_bits[1], 0); + set_led_bit(hw, driver_info->led_bits[2], 0); + set_led_bit(hw, driver_info->led_bits[3], 0); + break; + case LED_S0_ON: + set_led_bit(hw, driver_info->led_bits[1], 1); + break; + case LED_S0_OFF: + set_led_bit(hw, driver_info->led_bits[1], 0); + break; + case LED_B1_ON: + set_led_bit(hw, driver_info->led_bits[2], 1); + break; + case LED_B1_OFF: + set_led_bit(hw, driver_info->led_bits[2], 0); + break; + case LED_B2_ON: + set_led_bit(hw, driver_info->led_bits[3], 1); + break; + case LED_B2_OFF: + set_led_bit(hw, driver_info->led_bits[3], 0); + break; + } + + if (hw->led_state != tmpled) { + if (debug & DBG_HFC_CALL_TRACE) + printk(KERN_DEBUG "%s: %s reg(0x%02x) val(x%02x)\n", + hw->name, __func__, + HFCUSB_P_DATA, hw->led_state); + + write_reg(hw, HFCUSB_P_DATA, hw->led_state); + } +} + +/* + * Layer2 -> Layer 1 Bchannel data + */ +static int +hfcusb_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb) +{ + struct bchannel *bch = container_of(ch, struct bchannel, ch); + struct hfcsusb *hw = bch->hw; + int ret = -EINVAL; + struct mISDNhead *hh = mISDN_HEAD_P(skb); + u_long flags; + + if (debug & DBG_HFC_CALL_TRACE) + printk(KERN_DEBUG "%s: %s\n", hw->name, __func__); + + switch (hh->prim) { + case PH_DATA_REQ: + spin_lock_irqsave(&hw->lock, flags); + ret = bchannel_senddata(bch, skb); + spin_unlock_irqrestore(&hw->lock, flags); + if (debug & DBG_HFC_CALL_TRACE) + printk(KERN_DEBUG "%s: %s PH_DATA_REQ ret(%i)\n", + hw->name, __func__, ret); + if (ret > 0) { + /* + * other l1 drivers don't send early confirms on + * transp data, but hfcsusb does because tx_next + * skb is needed in tx_iso_complete() + */ + queue_ch_frame(ch, PH_DATA_CNF, hh->id, NULL); + ret = 0; + } + return ret; + case PH_ACTIVATE_REQ: + if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags)) { + hfcsusb_start_endpoint(hw, bch->nr); + ret = hfcsusb_setup_bch(bch, ch->protocol); + } else + ret = 0; + if (!ret) + _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, + 0, NULL, GFP_KERNEL); + break; + case PH_DEACTIVATE_REQ: + deactivate_bchannel(bch); + _queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY, + 0, NULL, GFP_KERNEL); + ret = 0; + break; + } + if (!ret) + dev_kfree_skb(skb); + return ret; +} + +/* + * send full D/B channel status information + * as MPH_INFORMATION_IND + */ +static void +hfcsusb_ph_info(struct hfcsusb *hw) +{ + struct ph_info *phi; + struct dchannel *dch = &hw->dch; + int i; + + phi = kzalloc(sizeof(struct ph_info) + + dch->dev.nrbchan * sizeof(struct ph_info_ch), GFP_ATOMIC); + phi->dch.ch.protocol = hw->protocol; + phi->dch.ch.Flags = dch->Flags; + phi->dch.state = dch->state; + phi->dch.num_bch = dch->dev.nrbchan; + for (i = 0; i < dch->dev.nrbchan; i++) { + phi->bch[i].protocol = hw->bch[i].ch.protocol; + phi->bch[i].Flags = hw->bch[i].Flags; + } + _queue_data(&dch->dev.D, MPH_INFORMATION_IND, MISDN_ID_ANY, + sizeof(struct ph_info_dch) + dch->dev.nrbchan * + sizeof(struct ph_info_ch), phi, GFP_ATOMIC); +} + +/* + * Layer2 -> Layer 1 Dchannel data + */ +static int +hfcusb_l2l1D(struct mISDNchannel *ch, struct sk_buff *skb) +{ + struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D); + struct dchannel *dch = container_of(dev, struct dchannel, dev); + struct mISDNhead *hh = mISDN_HEAD_P(skb); + struct hfcsusb *hw = dch->hw; + int ret = -EINVAL; + u_long flags; + + switch (hh->prim) { + case PH_DATA_REQ: + if (debug & DBG_HFC_CALL_TRACE) + printk(KERN_DEBUG "%s: %s: PH_DATA_REQ\n", + hw->name, __func__); + + spin_lock_irqsave(&hw->lock, flags); + ret = dchannel_senddata(dch, skb); + spin_unlock_irqrestore(&hw->lock, flags); + if (ret > 0) { + ret = 0; + queue_ch_frame(ch, PH_DATA_CNF, hh->id, NULL); + } + break; + + case PH_ACTIVATE_REQ: + if (debug & DBG_HFC_CALL_TRACE) + printk(KERN_DEBUG "%s: %s: PH_ACTIVATE_REQ %s\n", + hw->name, __func__, + (hw->protocol == ISDN_P_NT_S0) ? "NT" : "TE"); + + if (hw->protocol == ISDN_P_NT_S0) { + ret = 0; + if (test_bit(FLG_ACTIVE, &dch->Flags)) { + _queue_data(&dch->dev.D, + PH_ACTIVATE_IND, MISDN_ID_ANY, 0, + NULL, GFP_ATOMIC); + } else { + hfcsusb_ph_command(hw, + HFC_L1_ACTIVATE_NT); + test_and_set_bit(FLG_L2_ACTIVATED, + &dch->Flags); + } + } else { + hfcsusb_ph_command(hw, HFC_L1_ACTIVATE_TE); + ret = l1_event(dch->l1, hh->prim); + } + break; + + case PH_DEACTIVATE_REQ: + if (debug & DBG_HFC_CALL_TRACE) + printk(KERN_DEBUG "%s: %s: PH_DEACTIVATE_REQ\n", + hw->name, __func__); + test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags); + + if (hw->protocol == ISDN_P_NT_S0) { + hfcsusb_ph_command(hw, HFC_L1_DEACTIVATE_NT); + spin_lock_irqsave(&hw->lock, flags); + skb_queue_purge(&dch->squeue); + if (dch->tx_skb) { + dev_kfree_skb(dch->tx_skb); + dch->tx_skb = NULL; + } + dch->tx_idx = 0; + if (dch->rx_skb) { + dev_kfree_skb(dch->rx_skb); + dch->rx_skb = NULL; + } + test_and_clear_bit(FLG_TX_BUSY, &dch->Flags); + spin_unlock_irqrestore(&hw->lock, flags); +#ifdef FIXME + if (test_and_clear_bit(FLG_L1_BUSY, &dch->Flags)) + dchannel_sched_event(&hc->dch, D_CLEARBUSY); +#endif + ret = 0; + } else + ret = l1_event(dch->l1, hh->prim); + break; + case MPH_INFORMATION_REQ: + hfcsusb_ph_info(hw); + ret = 0; + break; + } + + return ret; +} + +/* + * Layer 1 callback function + */ +static int +hfc_l1callback(struct dchannel *dch, u_int cmd) +{ + struct hfcsusb *hw = dch->hw; + + if (debug & DBG_HFC_CALL_TRACE) + printk(KERN_DEBUG "%s: %s cmd 0x%x\n", + hw->name, __func__, cmd); + + switch (cmd) { + case INFO3_P8: + case INFO3_P10: + case HW_RESET_REQ: + case HW_POWERUP_REQ: + break; + + case HW_DEACT_REQ: + skb_queue_purge(&dch->squeue); + if (dch->tx_skb) { + dev_kfree_skb(dch->tx_skb); + dch->tx_skb = NULL; + } + dch->tx_idx = 0; + if (dch->rx_skb) { + dev_kfree_skb(dch->rx_skb); + dch->rx_skb = NULL; + } + test_and_clear_bit(FLG_TX_BUSY, &dch->Flags); + break; + case PH_ACTIVATE_IND: + test_and_set_bit(FLG_ACTIVE, &dch->Flags); + _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL, + GFP_ATOMIC); + break; + case PH_DEACTIVATE_IND: + test_and_clear_bit(FLG_ACTIVE, &dch->Flags); + _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL, + GFP_ATOMIC); + break; + default: + if (dch->debug & DEBUG_HW) + printk(KERN_DEBUG "%s: %s: unknown cmd %x\n", + hw->name, __func__, cmd); + return -1; + } + hfcsusb_ph_info(hw); + return 0; +} + +static int +open_dchannel(struct hfcsusb *hw, struct mISDNchannel *ch, + struct channel_req *rq) +{ + int err = 0; + + if (debug & DEBUG_HW_OPEN) + printk(KERN_DEBUG "%s: %s: dev(%d) open addr(%i) from %p\n", + hw->name, __func__, hw->dch.dev.id, rq->adr.channel, + __builtin_return_address(0)); + if (rq->protocol == ISDN_P_NONE) + return -EINVAL; + + test_and_clear_bit(FLG_ACTIVE, &hw->dch.Flags); + test_and_clear_bit(FLG_ACTIVE, &hw->ech.Flags); + hfcsusb_start_endpoint(hw, HFC_CHAN_D); + + /* E-Channel logging */ + if (rq->adr.channel == 1) { + if (hw->fifos[HFCUSB_PCM_RX].pipe) { + hfcsusb_start_endpoint(hw, HFC_CHAN_E); + set_bit(FLG_ACTIVE, &hw->ech.Flags); + _queue_data(&hw->ech.dev.D, PH_ACTIVATE_IND, + MISDN_ID_ANY, 0, NULL, GFP_ATOMIC); + } else + return -EINVAL; + } + + if (!hw->initdone) { + hw->protocol = rq->protocol; + if (rq->protocol == ISDN_P_TE_S0) { + err = create_l1(&hw->dch, hfc_l1callback); + if (err) + return err; + } + setPortMode(hw); + ch->protocol = rq->protocol; + hw->initdone = 1; + } else { + if (rq->protocol != ch->protocol) + return -EPROTONOSUPPORT; + } + + if (((ch->protocol == ISDN_P_NT_S0) && (hw->dch.state == 3)) || + ((ch->protocol == ISDN_P_TE_S0) && (hw->dch.state == 7))) + _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, + 0, NULL, GFP_KERNEL); + rq->ch = ch; + if (!try_module_get(THIS_MODULE)) + printk(KERN_WARNING "%s: %s: cannot get module\n", + hw->name, __func__); + return 0; +} + +static int +open_bchannel(struct hfcsusb *hw, struct channel_req *rq) +{ + struct bchannel *bch; + + if (rq->adr.channel > 2) + return -EINVAL; + if (rq->protocol == ISDN_P_NONE) + return -EINVAL; + + if (debug & DBG_HFC_CALL_TRACE) + printk(KERN_DEBUG "%s: %s B%i\n", + hw->name, __func__, rq->adr.channel); + + bch = &hw->bch[rq->adr.channel - 1]; + if (test_and_set_bit(FLG_OPEN, &bch->Flags)) + return -EBUSY; /* b-channel can be only open once */ + test_and_clear_bit(FLG_FILLEMPTY, &bch->Flags); + bch->ch.protocol = rq->protocol; + rq->ch = &bch->ch; + + /* start USB endpoint for bchannel */ + if (rq->adr.channel == 1) + hfcsusb_start_endpoint(hw, HFC_CHAN_B1); + else + hfcsusb_start_endpoint(hw, HFC_CHAN_B2); + + if (!try_module_get(THIS_MODULE)) + printk(KERN_WARNING "%s: %s:cannot get module\n", + hw->name, __func__); + return 0; +} + +static int +channel_ctrl(struct hfcsusb *hw, struct mISDN_ctrl_req *cq) +{ + int ret = 0; + + if (debug & DBG_HFC_CALL_TRACE) + printk(KERN_DEBUG "%s: %s op(0x%x) channel(0x%x)\n", + hw->name, __func__, (cq->op), (cq->channel)); + + switch (cq->op) { + case MISDN_CTRL_GETOP: + cq->op = MISDN_CTRL_LOOP | MISDN_CTRL_CONNECT | + MISDN_CTRL_DISCONNECT; + break; + default: + printk(KERN_WARNING "%s: %s: unknown Op %x\n", + hw->name, __func__, cq->op); + ret = -EINVAL; + break; + } + return ret; +} + +/* + * device control function + */ +static int +hfc_dctrl(struct mISDNchannel *ch, u_int cmd, void *arg) +{ + struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D); + struct dchannel *dch = container_of(dev, struct dchannel, dev); + struct hfcsusb *hw = dch->hw; + struct channel_req *rq; + int err = 0; + + if (dch->debug & DEBUG_HW) + printk(KERN_DEBUG "%s: %s: cmd:%x %p\n", + hw->name, __func__, cmd, arg); + switch (cmd) { + case OPEN_CHANNEL: + rq = arg; + if ((rq->protocol == ISDN_P_TE_S0) || + (rq->protocol == ISDN_P_NT_S0)) + err = open_dchannel(hw, ch, rq); + else + err = open_bchannel(hw, rq); + if (!err) + hw->open++; + break; + case CLOSE_CHANNEL: + hw->open--; + if (debug & DEBUG_HW_OPEN) + printk(KERN_DEBUG + "%s: %s: dev(%d) close from %p (open %d)\n", + hw->name, __func__, hw->dch.dev.id, + __builtin_return_address(0), hw->open); + if (!hw->open) { + hfcsusb_stop_endpoint(hw, HFC_CHAN_D); + if (hw->fifos[HFCUSB_PCM_RX].pipe) + hfcsusb_stop_endpoint(hw, HFC_CHAN_E); + handle_led(hw, LED_POWER_ON); + } + module_put(THIS_MODULE); + break; + case CONTROL_CHANNEL: + err = channel_ctrl(hw, arg); + break; + default: + if (dch->debug & DEBUG_HW) + printk(KERN_DEBUG "%s: %s: unknown command %x\n", + hw->name, __func__, cmd); + return -EINVAL; + } + return err; +} + +/* + * S0 TE state change event handler + */ +static void +ph_state_te(struct dchannel *dch) +{ + struct hfcsusb *hw = dch->hw; + + if (debug & DEBUG_HW) { + if (dch->state <= HFC_MAX_TE_LAYER1_STATE) + printk(KERN_DEBUG "%s: %s: %s\n", hw->name, __func__, + HFC_TE_LAYER1_STATES[dch->state]); + else + printk(KERN_DEBUG "%s: %s: TE F%d\n", + hw->name, __func__, dch->state); + } + + switch (dch->state) { + case 0: + l1_event(dch->l1, HW_RESET_IND); + break; + case 3: + l1_event(dch->l1, HW_DEACT_IND); + break; + case 5: + case 8: + l1_event(dch->l1, ANYSIGNAL); + break; + case 6: + l1_event(dch->l1, INFO2); + break; + case 7: + l1_event(dch->l1, INFO4_P8); + break; + } + if (dch->state == 7) + handle_led(hw, LED_S0_ON); + else + handle_led(hw, LED_S0_OFF); +} + +/* + * S0 NT state change event handler + */ +static void +ph_state_nt(struct dchannel *dch) +{ + struct hfcsusb *hw = dch->hw; + + if (debug & DEBUG_HW) { + if (dch->state <= HFC_MAX_NT_LAYER1_STATE) + printk(KERN_DEBUG "%s: %s: %s\n", + hw->name, __func__, + HFC_NT_LAYER1_STATES[dch->state]); + + else + printk(KERN_INFO DRIVER_NAME "%s: %s: NT G%d\n", + hw->name, __func__, dch->state); + } + + switch (dch->state) { + case (1): + test_and_clear_bit(FLG_ACTIVE, &dch->Flags); + test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags); + hw->nt_timer = 0; + hw->timers &= ~NT_ACTIVATION_TIMER; + handle_led(hw, LED_S0_OFF); + break; + + case (2): + if (hw->nt_timer < 0) { + hw->nt_timer = 0; + hw->timers &= ~NT_ACTIVATION_TIMER; + hfcsusb_ph_command(dch->hw, HFC_L1_DEACTIVATE_NT); + } else { + hw->timers |= NT_ACTIVATION_TIMER; + hw->nt_timer = NT_T1_COUNT; + /* allow G2 -> G3 transition */ + write_reg(hw, HFCUSB_STATES, 2 | HFCUSB_NT_G2_G3); + } + break; + case (3): + hw->nt_timer = 0; + hw->timers &= ~NT_ACTIVATION_TIMER; + test_and_set_bit(FLG_ACTIVE, &dch->Flags); + _queue_data(&dch->dev.D, PH_ACTIVATE_IND, + MISDN_ID_ANY, 0, NULL, GFP_ATOMIC); + handle_led(hw, LED_S0_ON); + break; + case (4): + hw->nt_timer = 0; + hw->timers &= ~NT_ACTIVATION_TIMER; + break; + default: + break; + } + hfcsusb_ph_info(hw); +} + +static void +ph_state(struct dchannel *dch) +{ + struct hfcsusb *hw = dch->hw; + + if (hw->protocol == ISDN_P_NT_S0) + ph_state_nt(dch); + else if (hw->protocol == ISDN_P_TE_S0) + ph_state_te(dch); +} + +/* + * disable/enable BChannel for desired protocoll + */ +static int +hfcsusb_setup_bch(struct bchannel *bch, int protocol) +{ + struct hfcsusb *hw = bch->hw; + __u8 conhdlc, sctrl, sctrl_r; + + if (debug & DEBUG_HW) + printk(KERN_DEBUG "%s: %s: protocol %x-->%x B%d\n", + hw->name, __func__, bch->state, protocol, + bch->nr); + + /* setup val for CON_HDLC */ + conhdlc = 0; + if (protocol > ISDN_P_NONE) + conhdlc = 8; /* enable FIFO */ + + switch (protocol) { + case (-1): /* used for init */ + bch->state = -1; + /* fall trough */ + case (ISDN_P_NONE): + if (bch->state == ISDN_P_NONE) + return 0; /* already in idle state */ + bch->state = ISDN_P_NONE; + clear_bit(FLG_HDLC, &bch->Flags); + clear_bit(FLG_TRANSPARENT, &bch->Flags); + break; + case (ISDN_P_B_RAW): + conhdlc |= 2; + bch->state = protocol; + set_bit(FLG_TRANSPARENT, &bch->Flags); + break; + case (ISDN_P_B_HDLC): + bch->state = protocol; + set_bit(FLG_HDLC, &bch->Flags); + break; + default: + if (debug & DEBUG_HW) + printk(KERN_DEBUG "%s: %s: prot not known %x\n", + hw->name, __func__, protocol); + return -ENOPROTOOPT; + } + + if (protocol >= ISDN_P_NONE) { + write_reg(hw, HFCUSB_FIFO, (bch->nr == 1) ? 0 : 2); + write_reg(hw, HFCUSB_CON_HDLC, conhdlc); + write_reg(hw, HFCUSB_INC_RES_F, 2); + write_reg(hw, HFCUSB_FIFO, (bch->nr == 1) ? 1 : 3); + write_reg(hw, HFCUSB_CON_HDLC, conhdlc); + write_reg(hw, HFCUSB_INC_RES_F, 2); + + sctrl = 0x40 + ((hw->protocol == ISDN_P_TE_S0) ? 0x00 : 0x04); + sctrl_r = 0x0; + if (test_bit(FLG_ACTIVE, &hw->bch[0].Flags)) { + sctrl |= 1; + sctrl_r |= 1; + } + if (test_bit(FLG_ACTIVE, &hw->bch[1].Flags)) { + sctrl |= 2; + sctrl_r |= 2; + } + write_reg(hw, HFCUSB_SCTRL, sctrl); + write_reg(hw, HFCUSB_SCTRL_R, sctrl_r); + + if (protocol > ISDN_P_NONE) + handle_led(hw, (bch->nr == 1) ? LED_B1_ON : LED_B2_ON); + else + handle_led(hw, (bch->nr == 1) ? LED_B1_OFF : + LED_B2_OFF); + } + hfcsusb_ph_info(hw); + return 0; +} + +static void +hfcsusb_ph_command(struct hfcsusb *hw, u_char command) +{ + if (debug & DEBUG_HW) + printk(KERN_DEBUG "%s: %s: %x\n", + hw->name, __func__, command); + + switch (command) { + case HFC_L1_ACTIVATE_TE: + /* force sending sending INFO1 */ + write_reg(hw, HFCUSB_STATES, 0x14); + /* start l1 activation */ + write_reg(hw, HFCUSB_STATES, 0x04); + break; + + case HFC_L1_FORCE_DEACTIVATE_TE: + write_reg(hw, HFCUSB_STATES, 0x10); + write_reg(hw, HFCUSB_STATES, 0x03); + break; + + case HFC_L1_ACTIVATE_NT: + if (hw->dch.state == 3) + _queue_data(&hw->dch.dev.D, PH_ACTIVATE_IND, + MISDN_ID_ANY, 0, NULL, GFP_ATOMIC); + else + write_reg(hw, HFCUSB_STATES, HFCUSB_ACTIVATE | + HFCUSB_DO_ACTION | HFCUSB_NT_G2_G3); + break; + + case HFC_L1_DEACTIVATE_NT: + write_reg(hw, HFCUSB_STATES, + HFCUSB_DO_ACTION); + break; + } +} + +/* + * Layer 1 B-channel hardware access + */ +static int +channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq) +{ + int ret = 0; + + switch (cq->op) { + case MISDN_CTRL_GETOP: + cq->op = MISDN_CTRL_FILL_EMPTY; + break; + case MISDN_CTRL_FILL_EMPTY: /* fill fifo, if empty */ + test_and_set_bit(FLG_FILLEMPTY, &bch->Flags); + if (debug & DEBUG_HW_OPEN) + printk(KERN_DEBUG "%s: FILL_EMPTY request (nr=%d " + "off=%d)\n", __func__, bch->nr, !!cq->p1); + break; + default: + printk(KERN_WARNING "%s: unknown Op %x\n", __func__, cq->op); + ret = -EINVAL; + break; + } + return ret; +} + +/* collect data from incoming interrupt or isochron USB data */ +static void +hfcsusb_rx_frame(struct usb_fifo *fifo, __u8 *data, unsigned int len, + int finish) +{ + struct hfcsusb *hw = fifo->hw; + struct sk_buff *rx_skb = NULL; + int maxlen = 0; + int fifon = fifo->fifonum; + int i; + int hdlc = 0; + + if (debug & DBG_HFC_CALL_TRACE) + printk(KERN_DEBUG "%s: %s: fifo(%i) len(%i) " + "dch(%p) bch(%p) ech(%p)\n", + hw->name, __func__, fifon, len, + fifo->dch, fifo->bch, fifo->ech); + + if (!len) + return; + + if ((!!fifo->dch + !!fifo->bch + !!fifo->ech) != 1) { + printk(KERN_DEBUG "%s: %s: undefined channel\n", + hw->name, __func__); + return; + } + + spin_lock(&hw->lock); + if (fifo->dch) { + rx_skb = fifo->dch->rx_skb; + maxlen = fifo->dch->maxlen; + hdlc = 1; + } + if (fifo->bch) { + rx_skb = fifo->bch->rx_skb; + maxlen = fifo->bch->maxlen; + hdlc = test_bit(FLG_HDLC, &fifo->bch->Flags); + } + if (fifo->ech) { + rx_skb = fifo->ech->rx_skb; + maxlen = fifo->ech->maxlen; + hdlc = 1; + } + + if (!rx_skb) { + rx_skb = mI_alloc_skb(maxlen, GFP_ATOMIC); + if (rx_skb) { + if (fifo->dch) + fifo->dch->rx_skb = rx_skb; + if (fifo->bch) + fifo->bch->rx_skb = rx_skb; + if (fifo->ech) + fifo->ech->rx_skb = rx_skb; + skb_trim(rx_skb, 0); + } else { + printk(KERN_DEBUG "%s: %s: No mem for rx_skb\n", + hw->name, __func__); + spin_unlock(&hw->lock); + return; + } + } + + if (fifo->dch || fifo->ech) { + /* D/E-Channel SKB range check */ + if ((rx_skb->len + len) >= MAX_DFRAME_LEN_L1) { + printk(KERN_DEBUG "%s: %s: sbk mem exceeded " + "for fifo(%d) HFCUSB_D_RX\n", + hw->name, __func__, fifon); + skb_trim(rx_skb, 0); + spin_unlock(&hw->lock); + return; + } + } else if (fifo->bch) { + /* B-Channel SKB range check */ + if ((rx_skb->len + len) >= (MAX_BCH_SIZE + 3)) { + printk(KERN_DEBUG "%s: %s: sbk mem exceeded " + "for fifo(%d) HFCUSB_B_RX\n", + hw->name, __func__, fifon); + skb_trim(rx_skb, 0); + spin_unlock(&hw->lock); + return; + } + } + + memcpy(skb_put(rx_skb, len), data, len); + + if (hdlc) { + /* we have a complete hdlc packet */ + if (finish) { + if ((rx_skb->len > 3) && + (!(rx_skb->data[rx_skb->len - 1]))) { + if (debug & DBG_HFC_FIFO_VERBOSE) { + printk(KERN_DEBUG "%s: %s: fifon(%i)" + " new RX len(%i): ", + hw->name, __func__, fifon, + rx_skb->len); + i = 0; + while (i < rx_skb->len) + printk("%02x ", + rx_skb->data[i++]); + printk("\n"); + } + + /* remove CRC & status */ + skb_trim(rx_skb, rx_skb->len - 3); + + if (fifo->dch) + recv_Dchannel(fifo->dch); + if (fifo->bch) + recv_Bchannel(fifo->bch); + if (fifo->ech) + recv_Echannel(fifo->ech, + &hw->dch); + } else { + if (debug & DBG_HFC_FIFO_VERBOSE) { + printk(KERN_DEBUG + "%s: CRC or minlen ERROR fifon(%i) " + "RX len(%i): ", + hw->name, fifon, rx_skb->len); + i = 0; + while (i < rx_skb->len) + printk("%02x ", + rx_skb->data[i++]); + printk("\n"); + } + skb_trim(rx_skb, 0); + } + } + } else { + /* deliver transparent data to layer2 */ + if (rx_skb->len >= poll) + recv_Bchannel(fifo->bch); + } + spin_unlock(&hw->lock); +} + +void +fill_isoc_urb(struct urb *urb, struct usb_device *dev, unsigned int pipe, + void *buf, int num_packets, int packet_size, int interval, + usb_complete_t complete, void *context) +{ + int k; + + usb_fill_bulk_urb(urb, dev, pipe, buf, packet_size * num_packets, + complete, context); + + urb->number_of_packets = num_packets; + urb->transfer_flags = URB_ISO_ASAP; + urb->actual_length = 0; + urb->interval = interval; + + for (k = 0; k < num_packets; k++) { + urb->iso_frame_desc[k].offset = packet_size * k; + urb->iso_frame_desc[k].length = packet_size; + urb->iso_frame_desc[k].actual_length = 0; + } +} + +/* receive completion routine for all ISO tx fifos */ +static void +rx_iso_complete(struct urb *urb) +{ + struct iso_urb *context_iso_urb = (struct iso_urb *) urb->context; + struct usb_fifo *fifo = context_iso_urb->owner_fifo; + struct hfcsusb *hw = fifo->hw; + int k, len, errcode, offset, num_isoc_packets, fifon, maxlen, + status, iso_status, i; + __u8 *buf; + static __u8 eof[8]; + __u8 s0_state; + + fifon = fifo->fifonum; + status = urb->status; + + spin_lock(&hw->lock); + if (fifo->stop_gracefull) { + fifo->stop_gracefull = 0; + fifo->active = 0; + spin_unlock(&hw->lock); + return; + } + spin_unlock(&hw->lock); + + /* + * ISO transfer only partially completed, + * look at individual frame status for details + */ + if (status == -EXDEV) { + if (debug & DEBUG_HW) + printk(KERN_DEBUG "%s: %s: with -EXDEV " + "urb->status %d, fifonum %d\n", + hw->name, __func__, status, fifon); + + /* clear status, so go on with ISO transfers */ + status = 0; + } + + s0_state = 0; + if (fifo->active && !status) { + num_isoc_packets = iso_packets[fifon]; + maxlen = fifo->usb_packet_maxlen; + + for (k = 0; k < num_isoc_packets; ++k) { + len = urb->iso_frame_desc[k].actual_length; + offset = urb->iso_frame_desc[k].offset; + buf = context_iso_urb->buffer + offset; + iso_status = urb->iso_frame_desc[k].status; + + if (iso_status && (debug & DBG_HFC_FIFO_VERBOSE)) { + printk(KERN_DEBUG "%s: %s: " + "ISO packet %i, status: %i\n", + hw->name, __func__, k, iso_status); + } + + /* USB data log for every D ISO in */ + if ((fifon == HFCUSB_D_RX) && + (debug & DBG_HFC_USB_VERBOSE)) { + printk(KERN_DEBUG + "%s: %s: %d (%d/%d) len(%d) ", + hw->name, __func__, urb->start_frame, + k, num_isoc_packets-1, + len); + for (i = 0; i < len; i++) + printk("%x ", buf[i]); + printk("\n"); + } + + if (!iso_status) { + if (fifo->last_urblen != maxlen) { + /* + * save fifo fill-level threshold bits + * to use them later in TX ISO URB + * completions + */ + hw->threshold_mask = buf[1]; + + if (fifon == HFCUSB_D_RX) + s0_state = (buf[0] >> 4); + + eof[fifon] = buf[0] & 1; + if (len > 2) + hfcsusb_rx_frame(fifo, buf + 2, + len - 2, (len < maxlen) + ? eof[fifon] : 0); + } else + hfcsusb_rx_frame(fifo, buf, len, + (len < maxlen) ? + eof[fifon] : 0); + fifo->last_urblen = len; + } + } + + /* signal S0 layer1 state change */ + if ((s0_state) && (hw->initdone) && + (s0_state != hw->dch.state)) { + hw->dch.state = s0_state; + schedule_event(&hw->dch, FLG_PHCHANGE); + } + + fill_isoc_urb(urb, fifo->hw->dev, fifo->pipe, + context_iso_urb->buffer, num_isoc_packets, + fifo->usb_packet_maxlen, fifo->intervall, + (usb_complete_t)rx_iso_complete, urb->context); + errcode = usb_submit_urb(urb, GFP_ATOMIC); + if (errcode < 0) { + if (debug & DEBUG_HW) + printk(KERN_DEBUG "%s: %s: error submitting " + "ISO URB: %d\n", + hw->name, __func__, errcode); + } + } else { + if (status && (debug & DBG_HFC_URB_INFO)) + printk(KERN_DEBUG "%s: %s: rx_iso_complete : " + "urb->status %d, fifonum %d\n", + hw->name, __func__, status, fifon); + } +} + +/* receive completion routine for all interrupt rx fifos */ +static void +rx_int_complete(struct urb *urb) +{ + int len, status, i; + __u8 *buf, maxlen, fifon; + struct usb_fifo *fifo = (struct usb_fifo *) urb->context; + struct hfcsusb *hw = fifo->hw; + static __u8 eof[8]; + + spin_lock(&hw->lock); + if (fifo->stop_gracefull) { + fifo->stop_gracefull = 0; + fifo->active = 0; + spin_unlock(&hw->lock); + return; + } + spin_unlock(&hw->lock); + + fifon = fifo->fifonum; + if ((!fifo->active) || (urb->status)) { + if (debug & DBG_HFC_URB_ERROR) + printk(KERN_DEBUG + "%s: %s: RX-Fifo %i is going down (%i)\n", + hw->name, __func__, fifon, urb->status); + + fifo->urb->interval = 0; /* cancel automatic rescheduling */ + return; + } + len = urb->actual_length; + buf = fifo->buffer; + maxlen = fifo->usb_packet_maxlen; + + /* USB data log for every D INT in */ + if ((fifon == HFCUSB_D_RX) && (debug & DBG_HFC_USB_VERBOSE)) { + printk(KERN_DEBUG "%s: %s: D RX INT len(%d) ", + hw->name, __func__, len); + for (i = 0; i < len; i++) + printk("%02x ", buf[i]); + printk("\n"); + } + + if (fifo->last_urblen != fifo->usb_packet_maxlen) { + /* the threshold mask is in the 2nd status byte */ + hw->threshold_mask = buf[1]; + + /* signal S0 layer1 state change */ + if (hw->initdone && ((buf[0] >> 4) != hw->dch.state)) { + hw->dch.state = (buf[0] >> 4); + schedule_event(&hw->dch, FLG_PHCHANGE); + } + + eof[fifon] = buf[0] & 1; + /* if we have more than the 2 status bytes -> collect data */ + if (len > 2) + hfcsusb_rx_frame(fifo, buf + 2, + urb->actual_length - 2, + (len < maxlen) ? eof[fifon] : 0); + } else { + hfcsusb_rx_frame(fifo, buf, urb->actual_length, + (len < maxlen) ? eof[fifon] : 0); + } + fifo->last_urblen = urb->actual_length; + + status = usb_submit_urb(urb, GFP_ATOMIC); + if (status) { + if (debug & DEBUG_HW) + printk(KERN_DEBUG "%s: %s: error resubmitting USB\n", + hw->name, __func__); + } +} + +/* transmit completion routine for all ISO tx fifos */ +static void +tx_iso_complete(struct urb *urb) +{ + struct iso_urb *context_iso_urb = (struct iso_urb *) urb->context; + struct usb_fifo *fifo = context_iso_urb->owner_fifo; + struct hfcsusb *hw = fifo->hw; + struct sk_buff *tx_skb; + int k, tx_offset, num_isoc_packets, sink, remain, current_len, + errcode, hdlc, i; + int *tx_idx; + int frame_complete, fifon, status; + __u8 threshbit; + + spin_lock(&hw->lock); + if (fifo->stop_gracefull) { + fifo->stop_gracefull = 0; + fifo->active = 0; + spin_unlock(&hw->lock); + return; + } + + if (fifo->dch) { + tx_skb = fifo->dch->tx_skb; + tx_idx = &fifo->dch->tx_idx; + hdlc = 1; + } else if (fifo->bch) { + tx_skb = fifo->bch->tx_skb; + tx_idx = &fifo->bch->tx_idx; + hdlc = test_bit(FLG_HDLC, &fifo->bch->Flags); + } else { + printk(KERN_DEBUG "%s: %s: neither BCH nor DCH\n", + hw->name, __func__); + spin_unlock(&hw->lock); + return; + } + + fifon = fifo->fifonum; + status = urb->status; + + tx_offset = 0; + + /* + * ISO transfer only partially completed, + * look at individual frame status for details + */ + if (status == -EXDEV) { + if (debug & DBG_HFC_URB_ERROR) + printk(KERN_DEBUG "%s: %s: " + "-EXDEV (%i) fifon (%d)\n", + hw->name, __func__, status, fifon); + + /* clear status, so go on with ISO transfers */ + status = 0; + } + + if (fifo->active && !status) { + /* is FifoFull-threshold set for our channel? */ + threshbit = (hw->threshold_mask & (1 << fifon)); + num_isoc_packets = iso_packets[fifon]; + + /* predict dataflow to avoid fifo overflow */ + if (fifon >= HFCUSB_D_TX) + sink = (threshbit) ? SINK_DMIN : SINK_DMAX; + else + sink = (threshbit) ? SINK_MIN : SINK_MAX; + fill_isoc_urb(urb, fifo->hw->dev, fifo->pipe, + context_iso_urb->buffer, num_isoc_packets, + fifo->usb_packet_maxlen, fifo->intervall, + (usb_complete_t)tx_iso_complete, urb->context); + memset(context_iso_urb->buffer, 0, + sizeof(context_iso_urb->buffer)); + frame_complete = 0; + + for (k = 0; k < num_isoc_packets; ++k) { + /* analyze tx success of previous ISO packets */ + if (debug & DBG_HFC_URB_ERROR) { + errcode = urb->iso_frame_desc[k].status; + if (errcode) { + printk(KERN_DEBUG "%s: %s: " + "ISO packet %i, status: %i\n", + hw->name, __func__, k, errcode); + } + } + + /* Generate next ISO Packets */ + if (tx_skb) + remain = tx_skb->len - *tx_idx; + else + remain = 0; + + if (remain > 0) { + fifo->bit_line -= sink; + current_len = (0 - fifo->bit_line) / 8; + if (current_len > 14) + current_len = 14; + if (current_len < 0) + current_len = 0; + if (remain < current_len) + current_len = remain; + + /* how much bit do we put on the line? */ + fifo->bit_line += current_len * 8; + + context_iso_urb->buffer[tx_offset] = 0; + if (current_len == remain) { + if (hdlc) { + /* signal frame completion */ + context_iso_urb-> + buffer[tx_offset] = 1; + /* add 2 byte flags and 16bit + * CRC at end of ISDN frame */ + fifo->bit_line += 32; + } + frame_complete = 1; + } + + /* copy tx data to iso-urb buffer */ + memcpy(context_iso_urb->buffer + tx_offset + 1, + (tx_skb->data + *tx_idx), current_len); + *tx_idx += current_len; + + urb->iso_frame_desc[k].offset = tx_offset; + urb->iso_frame_desc[k].length = current_len + 1; + + /* USB data log for every D ISO out */ + if ((fifon == HFCUSB_D_RX) && + (debug & DBG_HFC_USB_VERBOSE)) { + printk(KERN_DEBUG + "%s: %s (%d/%d) offs(%d) len(%d) ", + hw->name, __func__, + k, num_isoc_packets-1, + urb->iso_frame_desc[k].offset, + urb->iso_frame_desc[k].length); + + for (i = urb->iso_frame_desc[k].offset; + i < (urb->iso_frame_desc[k].offset + + urb->iso_frame_desc[k].length); + i++) + printk("%x ", + context_iso_urb->buffer[i]); + + printk(" skb->len(%i) tx-idx(%d)\n", + tx_skb->len, *tx_idx); + } + + tx_offset += (current_len + 1); + } else { + urb->iso_frame_desc[k].offset = tx_offset++; + urb->iso_frame_desc[k].length = 1; + /* we lower data margin every msec */ + fifo->bit_line -= sink; + if (fifo->bit_line < BITLINE_INF) + fifo->bit_line = BITLINE_INF; + } + + if (frame_complete) { + frame_complete = 0; + + if (debug & DBG_HFC_FIFO_VERBOSE) { + printk(KERN_DEBUG "%s: %s: " + "fifon(%i) new TX len(%i): ", + hw->name, __func__, + fifon, tx_skb->len); + i = 0; + while (i < tx_skb->len) + printk("%02x ", + tx_skb->data[i++]); + printk("\n"); + } + + dev_kfree_skb(tx_skb); + tx_skb = NULL; + if (fifo->dch && get_next_dframe(fifo->dch)) + tx_skb = fifo->dch->tx_skb; + else if (fifo->bch && + get_next_bframe(fifo->bch)) { + if (test_bit(FLG_TRANSPARENT, + &fifo->bch->Flags)) + confirm_Bsend(fifo->bch); + tx_skb = fifo->bch->tx_skb; + } + } + } + errcode = usb_submit_urb(urb, GFP_ATOMIC); + if (errcode < 0) { + if (debug & DEBUG_HW) + printk(KERN_DEBUG + "%s: %s: error submitting ISO URB: %d \n", + hw->name, __func__, errcode); + } + + /* + * abuse DChannel tx iso completion to trigger NT mode state + * changes tx_iso_complete is assumed to be called every + * fifo->intervall (ms) + */ + if ((fifon == HFCUSB_D_TX) && (hw->protocol == ISDN_P_NT_S0) + && (hw->timers & NT_ACTIVATION_TIMER)) { + if ((--hw->nt_timer) < 0) + schedule_event(&hw->dch, FLG_PHCHANGE); + } + + } else { + if (status && (debug & DBG_HFC_URB_ERROR)) + printk(KERN_DEBUG "%s: %s: urb->status %s (%i)" + "fifonum=%d\n", + hw->name, __func__, + symbolic(urb_errlist, status), status, fifon); + } + spin_unlock(&hw->lock); +} + +/* + * allocs urbs and start isoc transfer with two pending urbs to avoid + * gaps in the transfer chain + */ +static int +start_isoc_chain(struct usb_fifo *fifo, int num_packets_per_urb, + usb_complete_t complete, int packet_size) +{ + struct hfcsusb *hw = fifo->hw; + int i, k, errcode; + + if (debug) + printk(KERN_DEBUG "%s: %s: fifo %i\n", + hw->name, __func__, fifo->fifonum); + + /* allocate Memory for Iso out Urbs */ + for (i = 0; i < 2; i++) { + if (!(fifo->iso[i].urb)) { + fifo->iso[i].urb = + usb_alloc_urb(num_packets_per_urb, GFP_KERNEL); + if (!(fifo->iso[i].urb)) { + printk(KERN_DEBUG + "%s: %s: alloc urb for fifo %i failed", + hw->name, __func__, fifo->fifonum); + } + fifo->iso[i].owner_fifo = (struct usb_fifo *) fifo; + fifo->iso[i].indx = i; + + /* Init the first iso */ + if (ISO_BUFFER_SIZE >= + (fifo->usb_packet_maxlen * + num_packets_per_urb)) { + fill_isoc_urb(fifo->iso[i].urb, + fifo->hw->dev, fifo->pipe, + fifo->iso[i].buffer, + num_packets_per_urb, + fifo->usb_packet_maxlen, + fifo->intervall, complete, + &fifo->iso[i]); + memset(fifo->iso[i].buffer, 0, + sizeof(fifo->iso[i].buffer)); + + for (k = 0; k < num_packets_per_urb; k++) { + fifo->iso[i].urb-> + iso_frame_desc[k].offset = + k * packet_size; + fifo->iso[i].urb-> + iso_frame_desc[k].length = + packet_size; + } + } else { + printk(KERN_DEBUG + "%s: %s: ISO Buffer size to small!\n", + hw->name, __func__); + } + } + fifo->bit_line = BITLINE_INF; + + errcode = usb_submit_urb(fifo->iso[i].urb, GFP_KERNEL); + fifo->active = (errcode >= 0) ? 1 : 0; + fifo->stop_gracefull = 0; + if (errcode < 0) { + printk(KERN_DEBUG "%s: %s: %s URB nr:%d\n", + hw->name, __func__, + symbolic(urb_errlist, errcode), i); + } + } + return fifo->active; +} + +static void +stop_iso_gracefull(struct usb_fifo *fifo) +{ + struct hfcsusb *hw = fifo->hw; + int i, timeout; + u_long flags; + + for (i = 0; i < 2; i++) { + spin_lock_irqsave(&hw->lock, flags); + if (debug) + printk(KERN_DEBUG "%s: %s for fifo %i.%i\n", + hw->name, __func__, fifo->fifonum, i); + fifo->stop_gracefull = 1; + spin_unlock_irqrestore(&hw->lock, flags); + } + + for (i = 0; i < 2; i++) { + timeout = 3; + while (fifo->stop_gracefull && timeout--) + schedule_timeout_interruptible((HZ/1000)*16); + if (debug && fifo->stop_gracefull) + printk(KERN_DEBUG "%s: ERROR %s for fifo %i.%i\n", + hw->name, __func__, fifo->fifonum, i); + } +} + +static void +stop_int_gracefull(struct usb_fifo *fifo) +{ + struct hfcsusb *hw = fifo->hw; + int timeout; + u_long flags; + + spin_lock_irqsave(&hw->lock, flags); + if (debug) + printk(KERN_DEBUG "%s: %s for fifo %i\n", + hw->name, __func__, fifo->fifonum); + fifo->stop_gracefull = 1; + spin_unlock_irqrestore(&hw->lock, flags); + + timeout = 3; + while (fifo->stop_gracefull && timeout--) + schedule_timeout_interruptible((HZ/1000)*3); + if (debug && fifo->stop_gracefull) + printk(KERN_DEBUG "%s: ERROR %s for fifo %i\n", + hw->name, __func__, fifo->fifonum); +} + +/* start the interrupt transfer for the given fifo */ +static void +start_int_fifo(struct usb_fifo *fifo) +{ + struct hfcsusb *hw = fifo->hw; + int errcode; + + if (debug) + printk(KERN_DEBUG "%s: %s: INT IN fifo:%d\n", + hw->name, __func__, fifo->fifonum); + + if (!fifo->urb) { + fifo->urb = usb_alloc_urb(0, GFP_KERNEL); + if (!fifo->urb) + return; + } + usb_fill_int_urb(fifo->urb, fifo->hw->dev, fifo->pipe, + fifo->buffer, fifo->usb_packet_maxlen, + (usb_complete_t)rx_int_complete, fifo, fifo->intervall); + fifo->active = 1; + fifo->stop_gracefull = 0; + errcode = usb_submit_urb(fifo->urb, GFP_KERNEL); + if (errcode) { + printk(KERN_DEBUG "%s: %s: submit URB: status:%i\n", + hw->name, __func__, errcode); + fifo->active = 0; + } +} + +static void +setPortMode(struct hfcsusb *hw) +{ + if (debug & DEBUG_HW) + printk(KERN_DEBUG "%s: %s %s\n", hw->name, __func__, + (hw->protocol == ISDN_P_TE_S0) ? "TE" : "NT"); + + if (hw->protocol == ISDN_P_TE_S0) { + write_reg(hw, HFCUSB_SCTRL, 0x40); + write_reg(hw, HFCUSB_SCTRL_E, 0x00); + write_reg(hw, HFCUSB_CLKDEL, CLKDEL_TE); + write_reg(hw, HFCUSB_STATES, 3 | 0x10); + write_reg(hw, HFCUSB_STATES, 3); + } else { + write_reg(hw, HFCUSB_SCTRL, 0x44); + write_reg(hw, HFCUSB_SCTRL_E, 0x09); + write_reg(hw, HFCUSB_CLKDEL, CLKDEL_NT); + write_reg(hw, HFCUSB_STATES, 1 | 0x10); + write_reg(hw, HFCUSB_STATES, 1); + } +} + +static void +reset_hfcsusb(struct hfcsusb *hw) +{ + struct usb_fifo *fifo; + int i; + + if (debug & DEBUG_HW) + printk(KERN_DEBUG "%s: %s\n", hw->name, __func__); + + /* do Chip reset */ + write_reg(hw, HFCUSB_CIRM, 8); + + /* aux = output, reset off */ + write_reg(hw, HFCUSB_CIRM, 0x10); + + /* set USB_SIZE to match the wMaxPacketSize for INT or BULK transfers */ + write_reg(hw, HFCUSB_USB_SIZE, (hw->packet_size / 8) | + ((hw->packet_size / 8) << 4)); + + /* set USB_SIZE_I to match the the wMaxPacketSize for ISO transfers */ + write_reg(hw, HFCUSB_USB_SIZE_I, hw->iso_packet_size); + + /* enable PCM/GCI master mode */ + write_reg(hw, HFCUSB_MST_MODE1, 0); /* set default values */ + write_reg(hw, HFCUSB_MST_MODE0, 1); /* enable master mode */ + + /* init the fifos */ + write_reg(hw, HFCUSB_F_THRES, + (HFCUSB_TX_THRESHOLD / 8) | ((HFCUSB_RX_THRESHOLD / 8) << 4)); + + fifo = hw->fifos; + for (i = 0; i < HFCUSB_NUM_FIFOS; i++) { + write_reg(hw, HFCUSB_FIFO, i); /* select the desired fifo */ + fifo[i].max_size = + (i <= HFCUSB_B2_RX) ? MAX_BCH_SIZE : MAX_DFRAME_LEN; + fifo[i].last_urblen = 0; + + /* set 2 bit for D- & E-channel */ + write_reg(hw, HFCUSB_HDLC_PAR, ((i <= HFCUSB_B2_RX) ? 0 : 2)); + + /* enable all fifos */ + if (i == HFCUSB_D_TX) + write_reg(hw, HFCUSB_CON_HDLC, + (hw->protocol == ISDN_P_NT_S0) ? 0x08 : 0x09); + else + write_reg(hw, HFCUSB_CON_HDLC, 0x08); + write_reg(hw, HFCUSB_INC_RES_F, 2); /* reset the fifo */ + } + + write_reg(hw, HFCUSB_SCTRL_R, 0); /* disable both B receivers */ + handle_led(hw, LED_POWER_ON); +} + +/* start USB data pipes dependand on device's endpoint configuration */ +static void +hfcsusb_start_endpoint(struct hfcsusb *hw, int channel) +{ + /* quick check if endpoint already running */ + if ((channel == HFC_CHAN_D) && (hw->fifos[HFCUSB_D_RX].active)) + return; + if ((channel == HFC_CHAN_B1) && (hw->fifos[HFCUSB_B1_RX].active)) + return; + if ((channel == HFC_CHAN_B2) && (hw->fifos[HFCUSB_B2_RX].active)) + return; + if ((channel == HFC_CHAN_E) && (hw->fifos[HFCUSB_PCM_RX].active)) + return; + + /* start rx endpoints using USB INT IN method */ + if (hw->cfg_used == CNF_3INT3ISO || hw->cfg_used == CNF_4INT3ISO) + start_int_fifo(hw->fifos + channel*2 + 1); + + /* start rx endpoints using USB ISO IN method */ + if (hw->cfg_used == CNF_3ISO3ISO || hw->cfg_used == CNF_4ISO3ISO) { + switch (channel) { + case HFC_CHAN_D: + start_isoc_chain(hw->fifos + HFCUSB_D_RX, + ISOC_PACKETS_D, + (usb_complete_t)rx_iso_complete, + 16); + break; + case HFC_CHAN_E: + start_isoc_chain(hw->fifos + HFCUSB_PCM_RX, + ISOC_PACKETS_D, + (usb_complete_t)rx_iso_complete, + 16); + break; + case HFC_CHAN_B1: + start_isoc_chain(hw->fifos + HFCUSB_B1_RX, + ISOC_PACKETS_B, + (usb_complete_t)rx_iso_complete, + 16); + break; + case HFC_CHAN_B2: + start_isoc_chain(hw->fifos + HFCUSB_B2_RX, + ISOC_PACKETS_B, + (usb_complete_t)rx_iso_complete, + 16); + break; + } + } + + /* start tx endpoints using USB ISO OUT method */ + switch (channel) { + case HFC_CHAN_D: + start_isoc_chain(hw->fifos + HFCUSB_D_TX, + ISOC_PACKETS_B, + (usb_complete_t)tx_iso_complete, 1); + break; + case HFC_CHAN_B1: + start_isoc_chain(hw->fifos + HFCUSB_B1_TX, + ISOC_PACKETS_D, + (usb_complete_t)tx_iso_complete, 1); + break; + case HFC_CHAN_B2: + start_isoc_chain(hw->fifos + HFCUSB_B2_TX, + ISOC_PACKETS_B, + (usb_complete_t)tx_iso_complete, 1); + break; + } +} + +/* stop USB data pipes dependand on device's endpoint configuration */ +static void +hfcsusb_stop_endpoint(struct hfcsusb *hw, int channel) +{ + /* quick check if endpoint currently running */ + if ((channel == HFC_CHAN_D) && (!hw->fifos[HFCUSB_D_RX].active)) + return; + if ((channel == HFC_CHAN_B1) && (!hw->fifos[HFCUSB_B1_RX].active)) + return; + if ((channel == HFC_CHAN_B2) && (!hw->fifos[HFCUSB_B2_RX].active)) + return; + if ((channel == HFC_CHAN_E) && (!hw->fifos[HFCUSB_PCM_RX].active)) + return; + + /* rx endpoints using USB INT IN method */ + if (hw->cfg_used == CNF_3INT3ISO || hw->cfg_used == CNF_4INT3ISO) + stop_int_gracefull(hw->fifos + channel*2 + 1); + + /* rx endpoints using USB ISO IN method */ + if (hw->cfg_used == CNF_3ISO3ISO || hw->cfg_used == CNF_4ISO3ISO) + stop_iso_gracefull(hw->fifos + channel*2 + 1); + + /* tx endpoints using USB ISO OUT method */ + if (channel != HFC_CHAN_E) + stop_iso_gracefull(hw->fifos + channel*2); +} + + +/* Hardware Initialization */ +int +setup_hfcsusb(struct hfcsusb *hw) +{ + int err; + u_char b; + + if (debug & DBG_HFC_CALL_TRACE) + printk(KERN_DEBUG "%s: %s\n", hw->name, __func__); + + /* check the chip id */ + if (read_reg_atomic(hw, HFCUSB_CHIP_ID, &b) != 1) { + printk(KERN_DEBUG "%s: %s: cannot read chip id\n", + hw->name, __func__); + return 1; + } + if (b != HFCUSB_CHIPID) { + printk(KERN_DEBUG "%s: %s: Invalid chip id 0x%02x\n", + hw->name, __func__, b); + return 1; + } + + /* first set the needed config, interface and alternate */ + err = usb_set_interface(hw->dev, hw->if_used, hw->alt_used); + + hw->led_state = 0; + + /* init the background machinery for control requests */ + hw->ctrl_read.bRequestType = 0xc0; + hw->ctrl_read.bRequest = 1; + hw->ctrl_read.wLength = cpu_to_le16(1); + hw->ctrl_write.bRequestType = 0x40; + hw->ctrl_write.bRequest = 0; + hw->ctrl_write.wLength = 0; + usb_fill_control_urb(hw->ctrl_urb, hw->dev, hw->ctrl_out_pipe, + (u_char *)&hw->ctrl_write, NULL, 0, + (usb_complete_t)ctrl_complete, hw); + + reset_hfcsusb(hw); + return 0; +} + +static void +release_hw(struct hfcsusb *hw) +{ + if (debug & DBG_HFC_CALL_TRACE) + printk(KERN_DEBUG "%s: %s\n", hw->name, __func__); + + /* + * stop all endpoints gracefully + * TODO: mISDN_core should generate CLOSE_CHANNEL + * signals after calling mISDN_unregister_device() + */ + hfcsusb_stop_endpoint(hw, HFC_CHAN_D); + hfcsusb_stop_endpoint(hw, HFC_CHAN_B1); + hfcsusb_stop_endpoint(hw, HFC_CHAN_B2); + if (hw->fifos[HFCUSB_PCM_RX].pipe) + hfcsusb_stop_endpoint(hw, HFC_CHAN_E); + if (hw->protocol == ISDN_P_TE_S0) + l1_event(hw->dch.l1, CLOSE_CHANNEL); + + mISDN_unregister_device(&hw->dch.dev); + mISDN_freebchannel(&hw->bch[1]); + mISDN_freebchannel(&hw->bch[0]); + mISDN_freedchannel(&hw->dch); + + if (hw->ctrl_urb) { + usb_kill_urb(hw->ctrl_urb); + usb_free_urb(hw->ctrl_urb); + hw->ctrl_urb = NULL; + } + + if (hw->intf) + usb_set_intfdata(hw->intf, NULL); + list_del(&hw->list); + kfree(hw); + hw = NULL; +} + +static void +deactivate_bchannel(struct bchannel *bch) +{ + struct hfcsusb *hw = bch->hw; + u_long flags; + + if (bch->debug & DEBUG_HW) + printk(KERN_DEBUG "%s: %s: bch->nr(%i)\n", + hw->name, __func__, bch->nr); + + spin_lock_irqsave(&hw->lock, flags); + if (test_and_clear_bit(FLG_TX_NEXT, &bch->Flags)) { + dev_kfree_skb(bch->next_skb); + bch->next_skb = NULL; + } + if (bch->tx_skb) { + dev_kfree_skb(bch->tx_skb); + bch->tx_skb = NULL; + } + bch->tx_idx = 0; + if (bch->rx_skb) { + dev_kfree_skb(bch->rx_skb); + bch->rx_skb = NULL; + } + clear_bit(FLG_ACTIVE, &bch->Flags); + clear_bit(FLG_TX_BUSY, &bch->Flags); + spin_unlock_irqrestore(&hw->lock, flags); + hfcsusb_setup_bch(bch, ISDN_P_NONE); + hfcsusb_stop_endpoint(hw, bch->nr); +} + +/* + * Layer 1 B-channel hardware access + */ +static int +hfc_bctrl(struct mISDNchannel *ch, u_int cmd, void *arg) +{ + struct bchannel *bch = container_of(ch, struct bchannel, ch); + int ret = -EINVAL; + + if (bch->debug & DEBUG_HW) + printk(KERN_DEBUG "%s: cmd:%x %p\n", __func__, cmd, arg); + + switch (cmd) { + case HW_TESTRX_RAW: + case HW_TESTRX_HDLC: + case HW_TESTRX_OFF: + ret = -EINVAL; + break; + + case CLOSE_CHANNEL: + test_and_clear_bit(FLG_OPEN, &bch->Flags); + if (test_bit(FLG_ACTIVE, &bch->Flags)) + deactivate_bchannel(bch); + ch->protocol = ISDN_P_NONE; + ch->peer = NULL; + module_put(THIS_MODULE); + ret = 0; + break; + case CONTROL_CHANNEL: + ret = channel_bctrl(bch, arg); + break; + default: + printk(KERN_WARNING "%s: unknown prim(%x)\n", + __func__, cmd); + } + return ret; +} + +static int +setup_instance(struct hfcsusb *hw, struct device *parent) +{ + u_long flags; + int err, i; + + if (debug & DBG_HFC_CALL_TRACE) + printk(KERN_DEBUG "%s: %s\n", hw->name, __func__); + + spin_lock_init(&hw->ctrl_lock); + spin_lock_init(&hw->lock); + + mISDN_initdchannel(&hw->dch, MAX_DFRAME_LEN_L1, ph_state); + hw->dch.debug = debug & 0xFFFF; + hw->dch.hw = hw; + hw->dch.dev.Dprotocols = (1 << ISDN_P_TE_S0) | (1 << ISDN_P_NT_S0); + hw->dch.dev.D.send = hfcusb_l2l1D; + hw->dch.dev.D.ctrl = hfc_dctrl; + + /* enable E-Channel logging */ + if (hw->fifos[HFCUSB_PCM_RX].pipe) + mISDN_initdchannel(&hw->ech, MAX_DFRAME_LEN_L1, NULL); + + hw->dch.dev.Bprotocols = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) | + (1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK)); + hw->dch.dev.nrbchan = 2; + for (i = 0; i < 2; i++) { + hw->bch[i].nr = i + 1; + set_channelmap(i + 1, hw->dch.dev.channelmap); + hw->bch[i].debug = debug; + mISDN_initbchannel(&hw->bch[i], MAX_DATA_MEM); + hw->bch[i].hw = hw; + hw->bch[i].ch.send = hfcusb_l2l1B; + hw->bch[i].ch.ctrl = hfc_bctrl; + hw->bch[i].ch.nr = i + 1; + list_add(&hw->bch[i].ch.list, &hw->dch.dev.bchannels); + } + + hw->fifos[HFCUSB_B1_TX].bch = &hw->bch[0]; + hw->fifos[HFCUSB_B1_RX].bch = &hw->bch[0]; + hw->fifos[HFCUSB_B2_TX].bch = &hw->bch[1]; + hw->fifos[HFCUSB_B2_RX].bch = &hw->bch[1]; + hw->fifos[HFCUSB_D_TX].dch = &hw->dch; + hw->fifos[HFCUSB_D_RX].dch = &hw->dch; + hw->fifos[HFCUSB_PCM_RX].ech = &hw->ech; + hw->fifos[HFCUSB_PCM_TX].ech = &hw->ech; + + err = setup_hfcsusb(hw); + if (err) + goto out; + + snprintf(hw->name, MISDN_MAX_IDLEN - 1, "%s.%d", DRIVER_NAME, + hfcsusb_cnt + 1); + printk(KERN_INFO "%s: registered as '%s'\n", + DRIVER_NAME, hw->name); + + err = mISDN_register_device(&hw->dch.dev, parent, hw->name); + if (err) + goto out; + + hfcsusb_cnt++; + write_lock_irqsave(&HFClock, flags); + list_add_tail(&hw->list, &HFClist); + write_unlock_irqrestore(&HFClock, flags); + return 0; + +out: + mISDN_freebchannel(&hw->bch[1]); + mISDN_freebchannel(&hw->bch[0]); + mISDN_freedchannel(&hw->dch); + kfree(hw); + return err; +} + +static int +hfcsusb_probe(struct usb_interface *intf, const struct usb_device_id *id) +{ + struct hfcsusb *hw; + struct usb_device *dev = interface_to_usbdev(intf); + struct usb_host_interface *iface = intf->cur_altsetting; + struct usb_host_interface *iface_used = NULL; + struct usb_host_endpoint *ep; + struct hfcsusb_vdata *driver_info; + int ifnum = iface->desc.bInterfaceNumber, i, idx, alt_idx, + probe_alt_setting, vend_idx, cfg_used, *vcf, attr, cfg_found, + ep_addr, cmptbl[16], small_match, iso_packet_size, packet_size, + alt_used = 0; + + vend_idx = 0xffff; + for (i = 0; hfcsusb_idtab[i].idVendor; i++) { + if ((le16_to_cpu(dev->descriptor.idVendor) + == hfcsusb_idtab[i].idVendor) && + (le16_to_cpu(dev->descriptor.idProduct) + == hfcsusb_idtab[i].idProduct)) { + vend_idx = i; + continue; + } + } + + printk(KERN_DEBUG + "%s: interface(%d) actalt(%d) minor(%d) vend_idx(%d)\n", + __func__, ifnum, iface->desc.bAlternateSetting, + intf->minor, vend_idx); + + if (vend_idx == 0xffff) { + printk(KERN_WARNING + "%s: no valid vendor found in USB descriptor\n", + __func__); + return -EIO; + } + /* if vendor and product ID is OK, start probing alternate settings */ + alt_idx = 0; + small_match = -1; + + /* default settings */ + iso_packet_size = 16; + packet_size = 64; + + while (alt_idx < intf->num_altsetting) { + iface = intf->altsetting + alt_idx; + probe_alt_setting = iface->desc.bAlternateSetting; + cfg_used = 0; + + while (validconf[cfg_used][0]) { + cfg_found = 1; + vcf = validconf[cfg_used]; + ep = iface->endpoint; + memcpy(cmptbl, vcf, 16 * sizeof(int)); + + /* check for all endpoints in this alternate setting */ + for (i = 0; i < iface->desc.bNumEndpoints; i++) { + ep_addr = ep->desc.bEndpointAddress; + + /* get endpoint base */ + idx = ((ep_addr & 0x7f) - 1) * 2; + if (ep_addr & 0x80) + idx++; + attr = ep->desc.bmAttributes; + + if (cmptbl[idx] != EP_NOP) { + if (cmptbl[idx] == EP_NUL) + cfg_found = 0; + if (attr == USB_ENDPOINT_XFER_INT + && cmptbl[idx] == EP_INT) + cmptbl[idx] = EP_NUL; + if (attr == USB_ENDPOINT_XFER_BULK + && cmptbl[idx] == EP_BLK) + cmptbl[idx] = EP_NUL; + if (attr == USB_ENDPOINT_XFER_ISOC + && cmptbl[idx] == EP_ISO) + cmptbl[idx] = EP_NUL; + + if (attr == USB_ENDPOINT_XFER_INT && + ep->desc.bInterval < vcf[17]) { + cfg_found = 0; + } + } + ep++; + } + + for (i = 0; i < 16; i++) + if (cmptbl[i] != EP_NOP && cmptbl[i] != EP_NUL) + cfg_found = 0; + + if (cfg_found) { + if (small_match < cfg_used) { + small_match = cfg_used; + alt_used = probe_alt_setting; + iface_used = iface; + } + } + cfg_used++; + } + alt_idx++; + } /* (alt_idx < intf->num_altsetting) */ + + /* not found a valid USB Ta Endpoint config */ + if (small_match == -1) + return -EIO; + + iface = iface_used; + hw = kzalloc(sizeof(struct hfcsusb), GFP_KERNEL); + if (!hw) + return -ENOMEM; /* got no mem */ + snprintf(hw->name, MISDN_MAX_IDLEN - 1, "%s", DRIVER_NAME); + + ep = iface->endpoint; + vcf = validconf[small_match]; + + for (i = 0; i < iface->desc.bNumEndpoints; i++) { + struct usb_fifo *f; + + ep_addr = ep->desc.bEndpointAddress; + /* get endpoint base */ + idx = ((ep_addr & 0x7f) - 1) * 2; + if (ep_addr & 0x80) + idx++; + f = &hw->fifos[idx & 7]; + + /* init Endpoints */ + if (vcf[idx] == EP_NOP || vcf[idx] == EP_NUL) { + ep++; + continue; + } + switch (ep->desc.bmAttributes) { + case USB_ENDPOINT_XFER_INT: + f->pipe = usb_rcvintpipe(dev, + ep->desc.bEndpointAddress); + f->usb_transfer_mode = USB_INT; + packet_size = le16_to_cpu(ep->desc.wMaxPacketSize); + break; + case USB_ENDPOINT_XFER_BULK: + if (ep_addr & 0x80) + f->pipe = usb_rcvbulkpipe(dev, + ep->desc.bEndpointAddress); + else + f->pipe = usb_sndbulkpipe(dev, + ep->desc.bEndpointAddress); + f->usb_transfer_mode = USB_BULK; + packet_size = le16_to_cpu(ep->desc.wMaxPacketSize); + break; + case USB_ENDPOINT_XFER_ISOC: + if (ep_addr & 0x80) + f->pipe = usb_rcvisocpipe(dev, + ep->desc.bEndpointAddress); + else + f->pipe = usb_sndisocpipe(dev, + ep->desc.bEndpointAddress); + f->usb_transfer_mode = USB_ISOC; + iso_packet_size = le16_to_cpu(ep->desc.wMaxPacketSize); + break; + default: + f->pipe = 0; + } + + if (f->pipe) { + f->fifonum = idx & 7; + f->hw = hw; + f->usb_packet_maxlen = + le16_to_cpu(ep->desc.wMaxPacketSize); + f->intervall = ep->desc.bInterval; + } + ep++; + } + hw->dev = dev; /* save device */ + hw->if_used = ifnum; /* save used interface */ + hw->alt_used = alt_used; /* and alternate config */ + hw->ctrl_paksize = dev->descriptor.bMaxPacketSize0; /* control size */ + hw->cfg_used = vcf[16]; /* store used config */ + hw->vend_idx = vend_idx; /* store found vendor */ + hw->packet_size = packet_size; + hw->iso_packet_size = iso_packet_size; + + /* create the control pipes needed for register access */ + hw->ctrl_in_pipe = usb_rcvctrlpipe(hw->dev, 0); + hw->ctrl_out_pipe = usb_sndctrlpipe(hw->dev, 0); + hw->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL); + + driver_info = + (struct hfcsusb_vdata *)hfcsusb_idtab[vend_idx].driver_info; + printk(KERN_DEBUG "%s: %s: detected \"%s\" (%s, if=%d alt=%d)\n", + hw->name, __func__, driver_info->vend_name, + conf_str[small_match], ifnum, alt_used); + + if (setup_instance(hw, dev->dev.parent)) + return -EIO; + + hw->intf = intf; + usb_set_intfdata(hw->intf, hw); + return 0; +} + +/* function called when an active device is removed */ +static void +hfcsusb_disconnect(struct usb_interface *intf) +{ + struct hfcsusb *hw = usb_get_intfdata(intf); + struct hfcsusb *next; + int cnt = 0; + + printk(KERN_INFO "%s: device disconnected\n", hw->name); + + handle_led(hw, LED_POWER_OFF); + release_hw(hw); + + list_for_each_entry_safe(hw, next, &HFClist, list) + cnt++; + if (!cnt) + hfcsusb_cnt = 0; + + usb_set_intfdata(intf, NULL); +} + +static struct usb_driver hfcsusb_drv = { + .name = DRIVER_NAME, + .id_table = hfcsusb_idtab, + .probe = hfcsusb_probe, + .disconnect = hfcsusb_disconnect, +}; + +static int __init +hfcsusb_init(void) +{ + printk(KERN_INFO DRIVER_NAME " driver Rev. %s debug(0x%x) poll(%i)\n", + hfcsusb_rev, debug, poll); + + if (usb_register(&hfcsusb_drv)) { + printk(KERN_INFO DRIVER_NAME + ": Unable to register hfcsusb module at usb stack\n"); + return -ENODEV; + } + + return 0; +} + +static void __exit +hfcsusb_cleanup(void) +{ + if (debug & DBG_HFC_CALL_TRACE) + printk(KERN_INFO DRIVER_NAME ": %s\n", __func__); + + /* unregister Hardware */ + usb_deregister(&hfcsusb_drv); /* release our driver */ +} + +module_init(hfcsusb_init); +module_exit(hfcsusb_cleanup); diff --git a/drivers/isdn/hardware/mISDN/hfcsusb.h b/drivers/isdn/hardware/mISDN/hfcsusb.h new file mode 100644 index 00000000000..098486b8e8d --- /dev/null +++ b/drivers/isdn/hardware/mISDN/hfcsusb.h @@ -0,0 +1,418 @@ +/* + * hfcsusb.h, HFC-S USB mISDN driver + */ + +#ifndef __HFCSUSB_H__ +#define __HFCSUSB_H__ + + +#define DRIVER_NAME "HFC-S_USB" + +#define DBG_HFC_CALL_TRACE 0x00010000 +#define DBG_HFC_FIFO_VERBOSE 0x00020000 +#define DBG_HFC_USB_VERBOSE 0x00100000 +#define DBG_HFC_URB_INFO 0x00200000 +#define DBG_HFC_URB_ERROR 0x00400000 + +#define DEFAULT_TRANSP_BURST_SZ 128 + +#define HFC_CTRL_TIMEOUT 20 /* 5ms timeout writing/reading regs */ +#define CLKDEL_TE 0x0f /* CLKDEL in TE mode */ +#define CLKDEL_NT 0x6c /* CLKDEL in NT mode */ + +/* hfcsusb Layer1 commands */ +#define HFC_L1_ACTIVATE_TE 1 +#define HFC_L1_ACTIVATE_NT 2 +#define HFC_L1_DEACTIVATE_NT 3 +#define HFC_L1_FORCE_DEACTIVATE_TE 4 + +/* cmd FLAGS in HFCUSB_STATES register */ +#define HFCUSB_LOAD_STATE 0x10 +#define HFCUSB_ACTIVATE 0x20 +#define HFCUSB_DO_ACTION 0x40 +#define HFCUSB_NT_G2_G3 0x80 + +/* timers */ +#define NT_ACTIVATION_TIMER 0x01 /* enables NT mode activation Timer */ +#define NT_T1_COUNT 10 + +#define MAX_BCH_SIZE 2048 /* allowed B-channel packet size */ + +#define HFCUSB_RX_THRESHOLD 64 /* threshold for fifo report bit rx */ +#define HFCUSB_TX_THRESHOLD 96 /* threshold for fifo report bit tx */ + +#define HFCUSB_CHIP_ID 0x16 /* Chip ID register index */ +#define HFCUSB_CIRM 0x00 /* cirm register index */ +#define HFCUSB_USB_SIZE 0x07 /* int length register */ +#define HFCUSB_USB_SIZE_I 0x06 /* iso length register */ +#define HFCUSB_F_CROSS 0x0b /* bit order register */ +#define HFCUSB_CLKDEL 0x37 /* bit delay register */ +#define HFCUSB_CON_HDLC 0xfa /* channel connect register */ +#define HFCUSB_HDLC_PAR 0xfb +#define HFCUSB_SCTRL 0x31 /* S-bus control register (tx) */ +#define HFCUSB_SCTRL_E 0x32 /* same for E and special funcs */ +#define HFCUSB_SCTRL_R 0x33 /* S-bus control register (rx) */ +#define HFCUSB_F_THRES 0x0c /* threshold register */ +#define HFCUSB_FIFO 0x0f /* fifo select register */ +#define HFCUSB_F_USAGE 0x1a /* fifo usage register */ +#define HFCUSB_MST_MODE0 0x14 +#define HFCUSB_MST_MODE1 0x15 +#define HFCUSB_P_DATA 0x1f +#define HFCUSB_INC_RES_F 0x0e +#define HFCUSB_B1_SSL 0x20 +#define HFCUSB_B2_SSL 0x21 +#define HFCUSB_B1_RSL 0x24 +#define HFCUSB_B2_RSL 0x25 +#define HFCUSB_STATES 0x30 + + +#define HFCUSB_CHIPID 0x40 /* ID value of HFC-S USB */ + +/* fifo registers */ +#define HFCUSB_NUM_FIFOS 8 /* maximum number of fifos */ +#define HFCUSB_B1_TX 0 /* index for B1 transmit bulk/int */ +#define HFCUSB_B1_RX 1 /* index for B1 receive bulk/int */ +#define HFCUSB_B2_TX 2 +#define HFCUSB_B2_RX 3 +#define HFCUSB_D_TX 4 +#define HFCUSB_D_RX 5 +#define HFCUSB_PCM_TX 6 +#define HFCUSB_PCM_RX 7 + + +#define USB_INT 0 +#define USB_BULK 1 +#define USB_ISOC 2 + +#define ISOC_PACKETS_D 8 +#define ISOC_PACKETS_B 8 +#define ISO_BUFFER_SIZE 128 + +/* defines how much ISO packets are handled in one URB */ +static int iso_packets[8] = + { ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B, + ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D +}; + + +/* Fifo flow Control for TX ISO */ +#define SINK_MAX 68 +#define SINK_MIN 48 +#define SINK_DMIN 12 +#define SINK_DMAX 18 +#define BITLINE_INF (-96*8) + +/* HFC-S USB register access by Control-URSs */ +#define write_reg_atomic(a, b, c) \ + usb_control_msg((a)->dev, (a)->ctrl_out_pipe, 0, 0x40, (c), (b), \ + 0, 0, HFC_CTRL_TIMEOUT) +#define read_reg_atomic(a, b, c) \ + usb_control_msg((a)->dev, (a)->ctrl_in_pipe, 1, 0xC0, 0, (b), (c), \ + 1, HFC_CTRL_TIMEOUT) +#define HFC_CTRL_BUFSIZE 64 + +struct ctrl_buf { + __u8 hfcs_reg; /* register number */ + __u8 reg_val; /* value to be written (or read) */ +}; + +/* + * URB error codes + * Used to represent a list of values and their respective symbolic names + */ +struct hfcusb_symbolic_list { + const int num; + const char *name; +}; + +static struct hfcusb_symbolic_list urb_errlist[] = { + {-ENOMEM, "No memory for allocation of internal structures"}, + {-ENOSPC, "The host controller's bandwidth is already consumed"}, + {-ENOENT, "URB was canceled by unlink_urb"}, + {-EXDEV, "ISO transfer only partially completed"}, + {-EAGAIN, "Too match scheduled for the future"}, + {-ENXIO, "URB already queued"}, + {-EFBIG, "Too much ISO frames requested"}, + {-ENOSR, "Buffer error (overrun)"}, + {-EPIPE, "Specified endpoint is stalled (device not responding)"}, + {-EOVERFLOW, "Babble (bad cable?)"}, + {-EPROTO, "Bit-stuff error (bad cable?)"}, + {-EILSEQ, "CRC/Timeout"}, + {-ETIMEDOUT, "NAK (device does not respond)"}, + {-ESHUTDOWN, "Device unplugged"}, + {-1, NULL} +}; + +static inline const char * +symbolic(struct hfcusb_symbolic_list list[], const int num) +{ + int i; + for (i = 0; list[i].name != NULL; i++) + if (list[i].num == num) + return list[i].name; + return "<unkown USB Error>"; +} + +/* USB descriptor need to contain one of the following EndPoint combination: */ +#define CNF_4INT3ISO 1 /* 4 INT IN, 3 ISO OUT */ +#define CNF_3INT3ISO 2 /* 3 INT IN, 3 ISO OUT */ +#define CNF_4ISO3ISO 3 /* 4 ISO IN, 3 ISO OUT */ +#define CNF_3ISO3ISO 4 /* 3 ISO IN, 3 ISO OUT */ + +#define EP_NUL 1 /* Endpoint at this position not allowed */ +#define EP_NOP 2 /* all type of endpoints allowed at this position */ +#define EP_ISO 3 /* Isochron endpoint mandatory at this position */ +#define EP_BLK 4 /* Bulk endpoint mandatory at this position */ +#define EP_INT 5 /* Interrupt endpoint mandatory at this position */ + +#define HFC_CHAN_B1 0 +#define HFC_CHAN_B2 1 +#define HFC_CHAN_D 2 +#define HFC_CHAN_E 3 + + +/* + * List of all supported enpoints configiration sets, used to find the + * best matching endpoint configuration within a devices' USB descriptor. + * We need at least 3 RX endpoints, and 3 TX endpoints, either + * INT-in and ISO-out, or ISO-in and ISO-out) + * with 4 RX endpoints even E-Channel logging is possible + */ +static int +validconf[][19] = { + /* INT in, ISO out config */ + {EP_NUL, EP_INT, EP_NUL, EP_INT, EP_NUL, EP_INT, EP_NOP, EP_INT, + EP_ISO, EP_NUL, EP_ISO, EP_NUL, EP_ISO, EP_NUL, EP_NUL, EP_NUL, + CNF_4INT3ISO, 2, 1}, + {EP_NUL, EP_INT, EP_NUL, EP_INT, EP_NUL, EP_INT, EP_NUL, EP_NUL, + EP_ISO, EP_NUL, EP_ISO, EP_NUL, EP_ISO, EP_NUL, EP_NUL, EP_NUL, + CNF_3INT3ISO, 2, 0}, + /* ISO in, ISO out config */ + {EP_NOP, EP_NOP, EP_NOP, EP_NOP, EP_NOP, EP_NOP, EP_NOP, EP_NOP, + EP_ISO, EP_ISO, EP_ISO, EP_ISO, EP_ISO, EP_ISO, EP_NOP, EP_ISO, + CNF_4ISO3ISO, 2, 1}, + {EP_NUL, EP_NUL, EP_NUL, EP_NUL, EP_NUL, EP_NUL, EP_NUL, EP_NUL, + EP_ISO, EP_ISO, EP_ISO, EP_ISO, EP_ISO, EP_ISO, EP_NUL, EP_NUL, + CNF_3ISO3ISO, 2, 0}, + {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} /* EOL element */ +}; + +/* string description of chosen config */ +char *conf_str[] = { + "4 Interrupt IN + 3 Isochron OUT", + "3 Interrupt IN + 3 Isochron OUT", + "4 Isochron IN + 3 Isochron OUT", + "3 Isochron IN + 3 Isochron OUT" +}; + + +#define LED_OFF 0 /* no LED support */ +#define LED_SCHEME1 1 /* LED standard scheme */ +#define LED_SCHEME2 2 /* not used yet... */ + +#define LED_POWER_ON 1 +#define LED_POWER_OFF 2 +#define LED_S0_ON 3 +#define LED_S0_OFF 4 +#define LED_B1_ON 5 +#define LED_B1_OFF 6 +#define LED_B1_DATA 7 +#define LED_B2_ON 8 +#define LED_B2_OFF 9 +#define LED_B2_DATA 10 + +#define LED_NORMAL 0 /* LEDs are normal */ +#define LED_INVERTED 1 /* LEDs are inverted */ + +/* time in ms to perform a Flashing LED when B-Channel has traffic */ +#define LED_TIME 250 + + + +struct hfcsusb; +struct usb_fifo; + +/* structure defining input+output fifos (interrupt/bulk mode) */ +struct iso_urb { + struct urb *urb; + __u8 buffer[ISO_BUFFER_SIZE]; /* buffer rx/tx USB URB data */ + struct usb_fifo *owner_fifo; /* pointer to owner fifo */ + __u8 indx; /* Fifos's ISO double buffer 0 or 1 ? */ +#ifdef ISO_FRAME_START_DEBUG + int start_frames[ISO_FRAME_START_RING_COUNT]; + __u8 iso_frm_strt_pos; /* index in start_frame[] */ +#endif +}; + +struct usb_fifo { + int fifonum; /* fifo index attached to this structure */ + int active; /* fifo is currently active */ + struct hfcsusb *hw; /* pointer to main structure */ + int pipe; /* address of endpoint */ + __u8 usb_packet_maxlen; /* maximum length for usb transfer */ + unsigned int max_size; /* maximum size of receive/send packet */ + __u8 intervall; /* interrupt interval */ + struct urb *urb; /* transfer structure for usb routines */ + __u8 buffer[128]; /* buffer USB INT OUT URB data */ + int bit_line; /* how much bits are in the fifo? */ + + __u8 usb_transfer_mode; /* switched between ISO and INT */ + struct iso_urb iso[2]; /* two urbs to have one always + one pending */ + + struct dchannel *dch; /* link to hfcsusb_t->dch */ + struct bchannel *bch; /* link to hfcsusb_t->bch */ + struct dchannel *ech; /* link to hfcsusb_t->ech, TODO: E-CHANNEL */ + int last_urblen; /* remember length of last packet */ + __u8 stop_gracefull; /* stops URB retransmission */ +}; + +struct hfcsusb { + struct list_head list; + struct dchannel dch; + struct bchannel bch[2]; + struct dchannel ech; /* TODO : wait for struct echannel ;) */ + + struct usb_device *dev; /* our device */ + struct usb_interface *intf; /* used interface */ + int if_used; /* used interface number */ + int alt_used; /* used alternate config */ + int cfg_used; /* configuration index used */ + int vend_idx; /* index in hfcsusb_idtab */ + int packet_size; + int iso_packet_size; + struct usb_fifo fifos[HFCUSB_NUM_FIFOS]; + + /* control pipe background handling */ + struct ctrl_buf ctrl_buff[HFC_CTRL_BUFSIZE]; + int ctrl_in_idx, ctrl_out_idx, ctrl_cnt; + struct urb *ctrl_urb; + struct usb_ctrlrequest ctrl_write; + struct usb_ctrlrequest ctrl_read; + int ctrl_paksize; + int ctrl_in_pipe, ctrl_out_pipe; + spinlock_t ctrl_lock; /* lock for ctrl */ + spinlock_t lock; + + __u8 threshold_mask; + __u8 led_state; + + __u8 protocol; + int nt_timer; + int open; + __u8 timers; + __u8 initdone; + char name[MISDN_MAX_IDLEN]; +}; + +/* private vendor specific data */ +struct hfcsusb_vdata { + __u8 led_scheme; /* led display scheme */ + signed short led_bits[8]; /* array of 8 possible LED bitmask */ + char *vend_name; /* device name */ +}; + + +#define HFC_MAX_TE_LAYER1_STATE 8 +#define HFC_MAX_NT_LAYER1_STATE 4 + +const char *HFC_TE_LAYER1_STATES[HFC_MAX_TE_LAYER1_STATE + 1] = { + "TE F0 - Reset", + "TE F1 - Reset", + "TE F2 - Sensing", + "TE F3 - Deactivated", + "TE F4 - Awaiting signal", + "TE F5 - Identifying input", + "TE F6 - Synchronized", + "TE F7 - Activated", + "TE F8 - Lost framing", +}; + +const char *HFC_NT_LAYER1_STATES[HFC_MAX_NT_LAYER1_STATE + 1] = { + "NT G0 - Reset", + "NT G1 - Deactive", + "NT G2 - Pending activation", + "NT G3 - Active", + "NT G4 - Pending deactivation", +}; + +/* supported devices */ +static struct usb_device_id hfcsusb_idtab[] = { + { + USB_DEVICE(0x0959, 0x2bd0), + .driver_info = (unsigned long) &((struct hfcsusb_vdata) + {LED_OFF, {4, 0, 2, 1}, + "ISDN USB TA (Cologne Chip HFC-S USB based)"}), + }, + { + USB_DEVICE(0x0675, 0x1688), + .driver_info = (unsigned long) &((struct hfcsusb_vdata) + {LED_SCHEME1, {1, 2, 0, 0}, + "DrayTek miniVigor 128 USB ISDN TA"}), + }, + { + USB_DEVICE(0x07b0, 0x0007), + .driver_info = (unsigned long) &((struct hfcsusb_vdata) + {LED_SCHEME1, {0x80, -64, -32, -16}, + "Billion tiny USB ISDN TA 128"}), + }, + { + USB_DEVICE(0x0742, 0x2008), + .driver_info = (unsigned long) &((struct hfcsusb_vdata) + {LED_SCHEME1, {4, 0, 2, 1}, + "Stollmann USB TA"}), + }, + { + USB_DEVICE(0x0742, 0x2009), + .driver_info = (unsigned long) &((struct hfcsusb_vdata) + {LED_SCHEME1, {4, 0, 2, 1}, + "Aceex USB ISDN TA"}), + }, + { + USB_DEVICE(0x0742, 0x200A), + .driver_info = (unsigned long) &((struct hfcsusb_vdata) + {LED_SCHEME1, {4, 0, 2, 1}, + "OEM USB ISDN TA"}), + }, + { + USB_DEVICE(0x08e3, 0x0301), + .driver_info = (unsigned long) &((struct hfcsusb_vdata) + {LED_SCHEME1, {2, 0, 1, 4}, + "Olitec USB RNIS"}), + }, + { + USB_DEVICE(0x07fa, 0x0846), + .driver_info = (unsigned long) &((struct hfcsusb_vdata) + {LED_SCHEME1, {0x80, -64, -32, -16}, + "Bewan Modem RNIS USB"}), + }, + { + USB_DEVICE(0x07fa, 0x0847), + .driver_info = (unsigned long) &((struct hfcsusb_vdata) + {LED_SCHEME1, {0x80, -64, -32, -16}, + "Djinn Numeris USB"}), + }, + { + USB_DEVICE(0x07b0, 0x0006), + .driver_info = (unsigned long) &((struct hfcsusb_vdata) + {LED_SCHEME1, {0x80, -64, -32, -16}, + "Twister ISDN TA"}), + }, + { + USB_DEVICE(0x071d, 0x1005), + .driver_info = (unsigned long) &((struct hfcsusb_vdata) + {LED_SCHEME1, {0x02, 0, 0x01, 0x04}, + "Eicon DIVA USB 4.0"}), + }, + { + USB_DEVICE(0x0586, 0x0102), + .driver_info = (unsigned long) &((struct hfcsusb_vdata) + {LED_SCHEME1, {0x88, -64, -32, -16}, + "ZyXEL OMNI.NET USB II"}), + }, + { } +}; + +MODULE_DEVICE_TABLE(usb, hfcsusb_idtab); + +#endif /* __HFCSUSB_H__ */ |