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2144 lines
54 KiB
2144 lines
54 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
|
/* hfcsusb.c |
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* mISDN driver for Colognechip HFC-S USB chip |
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* |
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* Copyright 2001 by Peter Sprenger ([email protected]) |
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* Copyright 2008 by Martin Bachem ([email protected]) |
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* |
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* module params |
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* debug=<n>, default=0, with n=0xHHHHGGGG |
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* H - l1 driver flags described in hfcsusb.h |
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* G - common mISDN debug flags described at mISDNhw.h |
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* |
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* poll=<n>, default 128 |
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* n : burst size of PH_DATA_IND at transparent rx data |
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* |
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* Revision: 0.3.3 (socket), 2008-11-05 |
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*/ |
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|
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#include <linux/module.h> |
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#include <linux/delay.h> |
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#include <linux/usb.h> |
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#include <linux/mISDNhw.h> |
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#include <linux/slab.h> |
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#include "hfcsusb.h" |
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|
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static unsigned int debug; |
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static int poll = DEFAULT_TRANSP_BURST_SZ; |
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|
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static LIST_HEAD(HFClist); |
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static DEFINE_RWLOCK(HFClock); |
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|
|
|
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MODULE_AUTHOR("Martin Bachem"); |
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MODULE_LICENSE("GPL"); |
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module_param(debug, uint, S_IRUGO | S_IWUSR); |
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module_param(poll, int, 0); |
|
|
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static int hfcsusb_cnt; |
|
|
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/* some function prototypes */ |
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static void hfcsusb_ph_command(struct hfcsusb *hw, u_char command); |
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static void release_hw(struct hfcsusb *hw); |
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static void reset_hfcsusb(struct hfcsusb *hw); |
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static void setPortMode(struct hfcsusb *hw); |
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static void hfcsusb_start_endpoint(struct hfcsusb *hw, int channel); |
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static void hfcsusb_stop_endpoint(struct hfcsusb *hw, int channel); |
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static int hfcsusb_setup_bch(struct bchannel *bch, int protocol); |
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static void deactivate_bchannel(struct bchannel *bch); |
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static int hfcsusb_ph_info(struct hfcsusb *hw); |
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|
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/* start next background transfer for control channel */ |
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static void |
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ctrl_start_transfer(struct hfcsusb *hw) |
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{ |
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if (debug & DBG_HFC_CALL_TRACE) |
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printk(KERN_DEBUG "%s: %s\n", hw->name, __func__); |
|
|
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if (hw->ctrl_cnt) { |
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hw->ctrl_urb->pipe = hw->ctrl_out_pipe; |
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hw->ctrl_urb->setup_packet = (u_char *)&hw->ctrl_write; |
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hw->ctrl_urb->transfer_buffer = NULL; |
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hw->ctrl_urb->transfer_buffer_length = 0; |
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hw->ctrl_write.wIndex = |
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cpu_to_le16(hw->ctrl_buff[hw->ctrl_out_idx].hfcs_reg); |
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hw->ctrl_write.wValue = |
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cpu_to_le16(hw->ctrl_buff[hw->ctrl_out_idx].reg_val); |
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|
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usb_submit_urb(hw->ctrl_urb, GFP_ATOMIC); |
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} |
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} |
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|
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/* |
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* queue a control transfer request to write HFC-S USB |
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* chip register using CTRL resuest queue |
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*/ |
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static int write_reg(struct hfcsusb *hw, __u8 reg, __u8 val) |
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{ |
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struct ctrl_buf *buf; |
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|
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if (debug & DBG_HFC_CALL_TRACE) |
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printk(KERN_DEBUG "%s: %s reg(0x%02x) val(0x%02x)\n", |
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hw->name, __func__, reg, val); |
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|
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spin_lock(&hw->ctrl_lock); |
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if (hw->ctrl_cnt >= HFC_CTRL_BUFSIZE) { |
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spin_unlock(&hw->ctrl_lock); |
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return 1; |
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} |
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buf = &hw->ctrl_buff[hw->ctrl_in_idx]; |
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buf->hfcs_reg = reg; |
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buf->reg_val = val; |
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if (++hw->ctrl_in_idx >= HFC_CTRL_BUFSIZE) |
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hw->ctrl_in_idx = 0; |
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if (++hw->ctrl_cnt == 1) |
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ctrl_start_transfer(hw); |
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spin_unlock(&hw->ctrl_lock); |
|
|
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return 0; |
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} |
|
|
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/* control completion routine handling background control cmds */ |
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static void |
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ctrl_complete(struct urb *urb) |
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{ |
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struct hfcsusb *hw = (struct hfcsusb *) urb->context; |
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|
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if (debug & DBG_HFC_CALL_TRACE) |
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printk(KERN_DEBUG "%s: %s\n", hw->name, __func__); |
|
|
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urb->dev = hw->dev; |
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if (hw->ctrl_cnt) { |
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hw->ctrl_cnt--; /* decrement actual count */ |
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if (++hw->ctrl_out_idx >= HFC_CTRL_BUFSIZE) |
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hw->ctrl_out_idx = 0; /* pointer wrap */ |
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|
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ctrl_start_transfer(hw); /* start next transfer */ |
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} |
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} |
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|
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/* handle LED bits */ |
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static void |
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set_led_bit(struct hfcsusb *hw, signed short led_bits, int set_on) |
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{ |
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if (set_on) { |
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if (led_bits < 0) |
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hw->led_state &= ~abs(led_bits); |
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else |
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hw->led_state |= led_bits; |
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} else { |
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if (led_bits < 0) |
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hw->led_state |= abs(led_bits); |
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else |
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hw->led_state &= ~led_bits; |
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} |
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} |
|
|
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/* handle LED requests */ |
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static void |
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handle_led(struct hfcsusb *hw, int event) |
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{ |
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struct hfcsusb_vdata *driver_info = (struct hfcsusb_vdata *) |
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hfcsusb_idtab[hw->vend_idx].driver_info; |
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__u8 tmpled; |
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|
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if (driver_info->led_scheme == LED_OFF) |
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return; |
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tmpled = hw->led_state; |
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|
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switch (event) { |
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case LED_POWER_ON: |
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set_led_bit(hw, driver_info->led_bits[0], 1); |
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set_led_bit(hw, driver_info->led_bits[1], 0); |
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set_led_bit(hw, driver_info->led_bits[2], 0); |
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set_led_bit(hw, driver_info->led_bits[3], 0); |
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break; |
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case LED_POWER_OFF: |
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set_led_bit(hw, driver_info->led_bits[0], 0); |
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set_led_bit(hw, driver_info->led_bits[1], 0); |
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set_led_bit(hw, driver_info->led_bits[2], 0); |
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set_led_bit(hw, driver_info->led_bits[3], 0); |
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break; |
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case LED_S0_ON: |
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set_led_bit(hw, driver_info->led_bits[1], 1); |
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break; |
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case LED_S0_OFF: |
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set_led_bit(hw, driver_info->led_bits[1], 0); |
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break; |
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case LED_B1_ON: |
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set_led_bit(hw, driver_info->led_bits[2], 1); |
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break; |
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case LED_B1_OFF: |
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set_led_bit(hw, driver_info->led_bits[2], 0); |
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break; |
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case LED_B2_ON: |
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set_led_bit(hw, driver_info->led_bits[3], 1); |
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break; |
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case LED_B2_OFF: |
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set_led_bit(hw, driver_info->led_bits[3], 0); |
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break; |
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} |
|
|
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if (hw->led_state != tmpled) { |
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if (debug & DBG_HFC_CALL_TRACE) |
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printk(KERN_DEBUG "%s: %s reg(0x%02x) val(x%02x)\n", |
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hw->name, __func__, |
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HFCUSB_P_DATA, hw->led_state); |
|
|
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write_reg(hw, HFCUSB_P_DATA, hw->led_state); |
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} |
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} |
|
|
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/* |
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* Layer2 -> Layer 1 Bchannel data |
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*/ |
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static int |
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hfcusb_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb) |
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{ |
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struct bchannel *bch = container_of(ch, struct bchannel, ch); |
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struct hfcsusb *hw = bch->hw; |
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int ret = -EINVAL; |
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struct mISDNhead *hh = mISDN_HEAD_P(skb); |
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u_long flags; |
|
|
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if (debug & DBG_HFC_CALL_TRACE) |
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printk(KERN_DEBUG "%s: %s\n", hw->name, __func__); |
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|
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switch (hh->prim) { |
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case PH_DATA_REQ: |
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spin_lock_irqsave(&hw->lock, flags); |
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ret = bchannel_senddata(bch, skb); |
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spin_unlock_irqrestore(&hw->lock, flags); |
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if (debug & DBG_HFC_CALL_TRACE) |
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printk(KERN_DEBUG "%s: %s PH_DATA_REQ ret(%i)\n", |
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hw->name, __func__, ret); |
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if (ret > 0) |
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ret = 0; |
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return ret; |
|
case PH_ACTIVATE_REQ: |
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if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags)) { |
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hfcsusb_start_endpoint(hw, bch->nr - 1); |
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ret = hfcsusb_setup_bch(bch, ch->protocol); |
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} else |
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ret = 0; |
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if (!ret) |
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_queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, |
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0, NULL, GFP_KERNEL); |
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break; |
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case PH_DEACTIVATE_REQ: |
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deactivate_bchannel(bch); |
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_queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY, |
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0, NULL, GFP_KERNEL); |
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ret = 0; |
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break; |
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} |
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if (!ret) |
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dev_kfree_skb(skb); |
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return ret; |
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} |
|
|
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/* |
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* send full D/B channel status information |
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* as MPH_INFORMATION_IND |
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*/ |
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static int |
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hfcsusb_ph_info(struct hfcsusb *hw) |
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{ |
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struct ph_info *phi; |
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struct dchannel *dch = &hw->dch; |
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int i; |
|
|
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phi = kzalloc(struct_size(phi, bch, dch->dev.nrbchan), GFP_ATOMIC); |
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if (!phi) |
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return -ENOMEM; |
|
|
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phi->dch.ch.protocol = hw->protocol; |
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phi->dch.ch.Flags = dch->Flags; |
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phi->dch.state = dch->state; |
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phi->dch.num_bch = dch->dev.nrbchan; |
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for (i = 0; i < dch->dev.nrbchan; i++) { |
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phi->bch[i].protocol = hw->bch[i].ch.protocol; |
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phi->bch[i].Flags = hw->bch[i].Flags; |
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} |
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_queue_data(&dch->dev.D, MPH_INFORMATION_IND, MISDN_ID_ANY, |
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struct_size(phi, bch, dch->dev.nrbchan), phi, GFP_ATOMIC); |
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kfree(phi); |
|
|
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return 0; |
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} |
|
|
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/* |
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* Layer2 -> Layer 1 Dchannel data |
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*/ |
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static int |
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hfcusb_l2l1D(struct mISDNchannel *ch, struct sk_buff *skb) |
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{ |
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struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D); |
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struct dchannel *dch = container_of(dev, struct dchannel, dev); |
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struct mISDNhead *hh = mISDN_HEAD_P(skb); |
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struct hfcsusb *hw = dch->hw; |
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int ret = -EINVAL; |
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u_long flags; |
|
|
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switch (hh->prim) { |
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case PH_DATA_REQ: |
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if (debug & DBG_HFC_CALL_TRACE) |
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printk(KERN_DEBUG "%s: %s: PH_DATA_REQ\n", |
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hw->name, __func__); |
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|
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spin_lock_irqsave(&hw->lock, flags); |
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ret = dchannel_senddata(dch, skb); |
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spin_unlock_irqrestore(&hw->lock, flags); |
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if (ret > 0) { |
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ret = 0; |
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queue_ch_frame(ch, PH_DATA_CNF, hh->id, NULL); |
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} |
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break; |
|
|
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case PH_ACTIVATE_REQ: |
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if (debug & DBG_HFC_CALL_TRACE) |
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printk(KERN_DEBUG "%s: %s: PH_ACTIVATE_REQ %s\n", |
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hw->name, __func__, |
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(hw->protocol == ISDN_P_NT_S0) ? "NT" : "TE"); |
|
|
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if (hw->protocol == ISDN_P_NT_S0) { |
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ret = 0; |
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if (test_bit(FLG_ACTIVE, &dch->Flags)) { |
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_queue_data(&dch->dev.D, |
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PH_ACTIVATE_IND, MISDN_ID_ANY, 0, |
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NULL, GFP_ATOMIC); |
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} else { |
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hfcsusb_ph_command(hw, |
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HFC_L1_ACTIVATE_NT); |
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test_and_set_bit(FLG_L2_ACTIVATED, |
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&dch->Flags); |
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} |
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} else { |
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hfcsusb_ph_command(hw, HFC_L1_ACTIVATE_TE); |
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ret = l1_event(dch->l1, hh->prim); |
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} |
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break; |
|
|
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case PH_DEACTIVATE_REQ: |
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if (debug & DBG_HFC_CALL_TRACE) |
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printk(KERN_DEBUG "%s: %s: PH_DEACTIVATE_REQ\n", |
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hw->name, __func__); |
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test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags); |
|
|
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if (hw->protocol == ISDN_P_NT_S0) { |
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hfcsusb_ph_command(hw, HFC_L1_DEACTIVATE_NT); |
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spin_lock_irqsave(&hw->lock, flags); |
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skb_queue_purge(&dch->squeue); |
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if (dch->tx_skb) { |
|
dev_kfree_skb(dch->tx_skb); |
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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 |
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if (test_and_clear_bit(FLG_L1_BUSY, &dch->Flags)) |
|
dchannel_sched_event(&hc->dch, D_CLEARBUSY); |
|
#endif |
|
ret = 0; |
|
} else |
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ret = l1_event(dch->l1, hh->prim); |
|
break; |
|
case MPH_INFORMATION_REQ: |
|
ret = hfcsusb_ph_info(hw); |
|
break; |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
/* |
|
* Layer 1 callback function |
|
*/ |
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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; |
|
} |
|
return hfcsusb_ph_info(hw); |
|
} |
|
|
|
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 == 0 || 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 */ |
|
bch->ch.protocol = rq->protocol; |
|
rq->ch = &bch->ch; |
|
|
|
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; |
|
fallthrough; |
|
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); |
|
} |
|
return hfcsusb_ph_info(hw); |
|
} |
|
|
|
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) |
|
{ |
|
return mISDN_ctrl_bchannel(bch, cq); |
|
} |
|
|
|
/* 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; |
|
unsigned long flags; |
|
|
|
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_irqsave(&hw->lock, flags); |
|
if (fifo->dch) { |
|
rx_skb = fifo->dch->rx_skb; |
|
maxlen = fifo->dch->maxlen; |
|
hdlc = 1; |
|
} |
|
if (fifo->bch) { |
|
if (test_bit(FLG_RX_OFF, &fifo->bch->Flags)) { |
|
fifo->bch->dropcnt += len; |
|
spin_unlock_irqrestore(&hw->lock, flags); |
|
return; |
|
} |
|
maxlen = bchannel_get_rxbuf(fifo->bch, len); |
|
rx_skb = fifo->bch->rx_skb; |
|
if (maxlen < 0) { |
|
if (rx_skb) |
|
skb_trim(rx_skb, 0); |
|
pr_warn("%s.B%d: No bufferspace for %d bytes\n", |
|
hw->name, fifo->bch->nr, len); |
|
spin_unlock_irqrestore(&hw->lock, flags); |
|
return; |
|
} |
|
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 (fifo->dch || fifo->ech) { |
|
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->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_irqrestore(&hw->lock, flags); |
|
return; |
|
} |
|
} |
|
/* 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_irqrestore(&hw->lock, flags); |
|
return; |
|
} |
|
} |
|
|
|
skb_put_data(rx_skb, 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, MISDN_ID_ANY, |
|
0); |
|
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 */ |
|
recv_Bchannel(fifo->bch, MISDN_ID_ANY, false); |
|
} |
|
spin_unlock_irqrestore(&hw->lock, flags); |
|
} |
|
|
|
static 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; |
|
unsigned long flags; |
|
|
|
fifon = fifo->fifonum; |
|
status = urb->status; |
|
|
|
spin_lock_irqsave(&hw->lock, flags); |
|
if (fifo->stop_gracefull) { |
|
fifo->stop_gracefull = 0; |
|
fifo->active = 0; |
|
spin_unlock_irqrestore(&hw->lock, flags); |
|
return; |
|
} |
|
spin_unlock_irqrestore(&hw->lock, flags); |
|
|
|
/* |
|
* 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]; |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&hw->lock, flags); |
|
if (fifo->stop_gracefull) { |
|
fifo->stop_gracefull = 0; |
|
fifo->active = 0; |
|
spin_unlock_irqrestore(&hw->lock, flags); |
|
return; |
|
} |
|
spin_unlock_irqrestore(&hw->lock, flags); |
|
|
|
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, fillempty = 0; |
|
__u8 threshbit, *p; |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&hw->lock, flags); |
|
if (fifo->stop_gracefull) { |
|
fifo->stop_gracefull = 0; |
|
fifo->active = 0; |
|
spin_unlock_irqrestore(&hw->lock, flags); |
|
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); |
|
if (!tx_skb && !hdlc && |
|
test_bit(FLG_FILLEMPTY, &fifo->bch->Flags)) |
|
fillempty = 1; |
|
} else { |
|
printk(KERN_DEBUG "%s: %s: neither BCH nor DCH\n", |
|
hw->name, __func__); |
|
spin_unlock_irqrestore(&hw->lock, flags); |
|
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 if (fillempty) |
|
remain = 15; /* > not complete */ |
|
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 */ |
|
p = context_iso_urb->buffer + tx_offset + 1; |
|
if (fillempty) { |
|
memset(p, fifo->bch->fill[0], |
|
current_len); |
|
} else { |
|
memcpy(p, (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) && !fillempty && |
|
(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)) |
|
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_irqrestore(&hw->lock, flags); |
|
} |
|
|
|
/* |
|
* 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); |
|
continue; |
|
} |
|
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 */ |
|
static int |
|
setup_hfcsusb(struct hfcsusb *hw) |
|
{ |
|
void *dmabuf = kmalloc(sizeof(u_char), GFP_KERNEL); |
|
u_char b; |
|
int ret; |
|
|
|
if (debug & DBG_HFC_CALL_TRACE) |
|
printk(KERN_DEBUG "%s: %s\n", hw->name, __func__); |
|
|
|
if (!dmabuf) |
|
return -ENOMEM; |
|
|
|
ret = read_reg_atomic(hw, HFCUSB_CHIP_ID, dmabuf); |
|
|
|
memcpy(&b, dmabuf, sizeof(u_char)); |
|
kfree(dmabuf); |
|
|
|
/* check the chip id */ |
|
if (ret != 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 */ |
|
(void) 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); |
|
mISDN_clear_bchannel(bch); |
|
spin_unlock_irqrestore(&hw->lock, flags); |
|
hfcsusb_setup_bch(bch, ISDN_P_NONE); |
|
hfcsusb_stop_endpoint(hw, bch->nr - 1); |
|
} |
|
|
|
/* |
|
* 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); |
|
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, poll >> 1); |
|
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 (idx > 15) |
|
return -EIO; |
|
|
|
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); |
|
|
|
driver_info = (struct hfcsusb_vdata *) |
|
hfcsusb_idtab[vend_idx].driver_info; |
|
|
|
hw->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL); |
|
if (!hw->ctrl_urb) { |
|
pr_warn("%s: No memory for control urb\n", |
|
driver_info->vend_name); |
|
kfree(hw); |
|
return -ENOMEM; |
|
} |
|
|
|
pr_info("%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, |
|
.disable_hub_initiated_lpm = 1, |
|
}; |
|
|
|
module_usb_driver(hfcsusb_drv);
|
|
|