mirror of https://gitee.com/openkylin/linux.git
531 lines
14 KiB
C
531 lines
14 KiB
C
/*
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* Driver for ST5481 USB ISDN modem
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*
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* Author Frode Isaksen
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* Copyright 2001 by Frode Isaksen <fisaksen@bewan.com>
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* 2001 by Kai Germaschewski <kai.germaschewski@gmx.de>
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*
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* This software may be used and distributed according to the terms
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* of the GNU General Public License, incorporated herein by reference.
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*
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*/
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#ifndef _ST5481_H_
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#define _ST5481_H_
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// USB IDs, the Product Id is in the range 0x4810-0x481F
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#define ST_VENDOR_ID 0x0483
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#define ST5481_PRODUCT_ID 0x4810
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#define ST5481_PRODUCT_ID_MASK 0xFFF0
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// ST5481 endpoints when using alternative setting 3 (2B+D).
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// To get the endpoint address, OR with 0x80 for IN endpoints.
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#define EP_CTRL 0x00U /* Control endpoint */
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#define EP_INT 0x01U /* Interrupt endpoint */
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#define EP_B1_OUT 0x02U /* B1 channel out */
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#define EP_B1_IN 0x03U /* B1 channel in */
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#define EP_B2_OUT 0x04U /* B2 channel out */
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#define EP_B2_IN 0x05U /* B2 channel in */
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#define EP_D_OUT 0x06U /* D channel out */
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#define EP_D_IN 0x07U /* D channel in */
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// Number of isochronous packets. With 20 packets we get
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// 50 interrupts/sec for each endpoint.
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#define NUM_ISO_PACKETS_D 20
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#define NUM_ISO_PACKETS_B 20
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// Size of each isochronous packet.
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// In outgoing direction we need to match ISDN data rates:
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// D: 2 bytes / msec -> 16 kbit / s
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// B: 16 bytes / msec -> 64 kbit / s
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#define SIZE_ISO_PACKETS_D_IN 16
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#define SIZE_ISO_PACKETS_D_OUT 2
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#define SIZE_ISO_PACKETS_B_IN 32
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#define SIZE_ISO_PACKETS_B_OUT 8
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// If we overrun/underrun, we send one packet with +/- 2 bytes
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#define B_FLOW_ADJUST 2
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// Registers that are written using vendor specific device request
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// on endpoint 0.
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#define LBA 0x02 /* S loopback */
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#define SET_DEFAULT 0x06 /* Soft reset */
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#define LBB 0x1D /* S maintenance loopback */
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#define STT 0x1e /* S force transmission signals */
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#define SDA_MIN 0x20 /* SDA-sin minimal value */
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#define SDA_MAX 0x21 /* SDA-sin maximal value */
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#define SDELAY_VALUE 0x22 /* Delay between Tx and Rx clock */
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#define IN_D_COUNTER 0x36 /* D receive channel fifo counter */
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#define OUT_D_COUNTER 0x37 /* D transmit channel fifo counter */
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#define IN_B1_COUNTER 0x38 /* B1 receive channel fifo counter */
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#define OUT_B1_COUNTER 0x39 /* B1 transmit channel fifo counter */
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#define IN_B2_COUNTER 0x3a /* B2 receive channel fifo counter */
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#define OUT_B2_COUNTER 0x3b /* B2 transmit channel fifo counter */
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#define FFCTRL_IN_D 0x3C /* D receive channel fifo threshold low */
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#define FFCTRH_IN_D 0x3D /* D receive channel fifo threshold high */
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#define FFCTRL_OUT_D 0x3E /* D transmit channel fifo threshold low */
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#define FFCTRH_OUT_D 0x3F /* D transmit channel fifo threshold high */
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#define FFCTRL_IN_B1 0x40 /* B1 receive channel fifo threshold low */
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#define FFCTRH_IN_B1 0x41 /* B1 receive channel fifo threshold high */
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#define FFCTRL_OUT_B1 0x42 /* B1 transmit channel fifo threshold low */
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#define FFCTRH_OUT_B1 0x43 /* B1 transmit channel fifo threshold high */
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#define FFCTRL_IN_B2 0x44 /* B2 receive channel fifo threshold low */
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#define FFCTRH_IN_B2 0x45 /* B2 receive channel fifo threshold high */
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#define FFCTRL_OUT_B2 0x46 /* B2 transmit channel fifo threshold low */
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#define FFCTRH_OUT_B2 0x47 /* B2 transmit channel fifo threshold high */
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#define MPMSK 0x4A /* Multi purpose interrupt MASK register */
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#define FFMSK_D 0x4c /* D fifo interrupt MASK register */
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#define FFMSK_B1 0x4e /* B1 fifo interrupt MASK register */
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#define FFMSK_B2 0x50 /* B2 fifo interrupt MASK register */
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#define GPIO_DIR 0x52 /* GPIO pins direction registers */
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#define GPIO_OUT 0x53 /* GPIO pins output register */
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#define GPIO_IN 0x54 /* GPIO pins input register */
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#define TXCI 0x56 /* CI command to be transmitted */
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// Format of the interrupt packet received on endpoint 1:
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//
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// +--------+--------+--------+--------+--------+--------+
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// !MPINT !FFINT_D !FFINT_B1!FFINT_B2!CCIST !GPIO_INT!
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// +--------+--------+--------+--------+--------+--------+
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// Offsets in the interrupt packet
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#define MPINT 0
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#define FFINT_D 1
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#define FFINT_B1 2
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#define FFINT_B2 3
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#define CCIST 4
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#define GPIO_INT 5
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#define INT_PKT_SIZE 6
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// MPINT
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#define LSD_INT 0x80 /* S line activity detected */
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#define RXCI_INT 0x40 /* Indicate primitive arrived */
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#define DEN_INT 0x20 /* Signal enabling data out of D Tx fifo */
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#define DCOLL_INT 0x10 /* D channel collision */
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#define AMIVN_INT 0x04 /* AMI violation number reached 2 */
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#define INFOI_INT 0x04 /* INFOi changed */
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#define DRXON_INT 0x02 /* Reception channel active */
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#define GPCHG_INT 0x01 /* GPIO pin value changed */
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// FFINT_x
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#define IN_OVERRUN 0x80 /* In fifo overrun */
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#define OUT_UNDERRUN 0x40 /* Out fifo underrun */
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#define IN_UP 0x20 /* In fifo thresholdh up-crossed */
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#define IN_DOWN 0x10 /* In fifo thresholdl down-crossed */
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#define OUT_UP 0x08 /* Out fifo thresholdh up-crossed */
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#define OUT_DOWN 0x04 /* Out fifo thresholdl down-crossed */
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#define IN_COUNTER_ZEROED 0x02 /* In down-counter reached 0 */
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#define OUT_COUNTER_ZEROED 0x01 /* Out down-counter reached 0 */
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#define ANY_REC_INT (IN_OVERRUN+IN_UP+IN_DOWN+IN_COUNTER_ZEROED)
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#define ANY_XMIT_INT (OUT_UNDERRUN+OUT_UP+OUT_DOWN+OUT_COUNTER_ZEROED)
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// Level 1 commands that are sent using the TXCI device request
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#define ST5481_CMD_DR 0x0 /* Deactivation Request */
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#define ST5481_CMD_RES 0x1 /* state machine RESet */
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#define ST5481_CMD_TM1 0x2 /* Test Mode 1 */
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#define ST5481_CMD_TM2 0x3 /* Test Mode 2 */
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#define ST5481_CMD_PUP 0x7 /* Power UP */
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#define ST5481_CMD_AR8 0x8 /* Activation Request class 1 */
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#define ST5481_CMD_AR10 0x9 /* Activation Request class 2 */
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#define ST5481_CMD_ARL 0xA /* Activation Request Loopback */
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#define ST5481_CMD_PDN 0xF /* Power DoWn */
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// Turn on/off the LEDs using the GPIO device request.
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// To use the B LEDs, number_of_leds must be set to 4
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#define B1_LED 0x10U
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#define B2_LED 0x20U
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#define GREEN_LED 0x40U
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#define RED_LED 0x80U
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// D channel out states
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enum {
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ST_DOUT_NONE,
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ST_DOUT_SHORT_INIT,
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ST_DOUT_SHORT_WAIT_DEN,
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ST_DOUT_LONG_INIT,
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ST_DOUT_LONG_WAIT_DEN,
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ST_DOUT_NORMAL,
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ST_DOUT_WAIT_FOR_UNDERRUN,
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ST_DOUT_WAIT_FOR_NOT_BUSY,
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ST_DOUT_WAIT_FOR_STOP,
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ST_DOUT_WAIT_FOR_RESET,
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};
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#define DOUT_STATE_COUNT (ST_DOUT_WAIT_FOR_RESET + 1)
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// D channel out events
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enum {
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EV_DOUT_START_XMIT,
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EV_DOUT_COMPLETE,
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EV_DOUT_DEN,
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EV_DOUT_RESETED,
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EV_DOUT_STOPPED,
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EV_DOUT_COLL,
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EV_DOUT_UNDERRUN,
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};
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#define DOUT_EVENT_COUNT (EV_DOUT_UNDERRUN + 1)
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// ----------------------------------------------------------------------
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enum {
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ST_L1_F3,
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ST_L1_F4,
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ST_L1_F6,
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ST_L1_F7,
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ST_L1_F8,
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};
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#define L1_STATE_COUNT (ST_L1_F8+1)
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// The first 16 entries match the Level 1 indications that
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// are found at offset 4 (CCIST) in the interrupt packet
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enum {
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EV_IND_DP, // 0000 Deactivation Pending
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EV_IND_1, // 0001
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EV_IND_2, // 0010
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EV_IND_3, // 0011
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EV_IND_RSY, // 0100 ReSYnchronizing
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EV_IND_5, // 0101
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EV_IND_6, // 0110
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EV_IND_7, // 0111
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EV_IND_AP, // 1000 Activation Pending
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EV_IND_9, // 1001
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EV_IND_10, // 1010
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EV_IND_11, // 1011
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EV_IND_AI8, // 1100 Activation Indication class 8
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EV_IND_AI10,// 1101 Activation Indication class 10
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EV_IND_AIL, // 1110 Activation Indication Loopback
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EV_IND_DI, // 1111 Deactivation Indication
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EV_PH_ACTIVATE_REQ,
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EV_PH_DEACTIVATE_REQ,
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EV_TIMER3,
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};
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#define L1_EVENT_COUNT (EV_TIMER3 + 1)
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#define ERR(format, arg...) \
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printk(KERN_ERR "%s:%s: " format "\n" , __FILE__, __func__ , ## arg)
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#define WARN(format, arg...) \
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printk(KERN_WARNING "%s:%s: " format "\n" , __FILE__, __func__ , ## arg)
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#define INFO(format, arg...) \
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printk(KERN_INFO "%s:%s: " format "\n" , __FILE__, __func__ , ## arg)
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#include "isdnhdlc.h"
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#include "fsm.h"
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#include "hisax_if.h"
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#include <linux/skbuff.h>
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/* ======================================================================
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* FIFO handling
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*/
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/* Generic FIFO structure */
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struct fifo {
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u_char r,w,count,size;
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spinlock_t lock;
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};
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/*
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* Init an FIFO
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*/
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static inline void fifo_init(struct fifo *fifo, int size)
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{
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fifo->r = fifo->w = fifo->count = 0;
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fifo->size = size;
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spin_lock_init(&fifo->lock);
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}
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/*
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* Add an entry to the FIFO
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*/
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static inline int fifo_add(struct fifo *fifo)
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{
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unsigned long flags;
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int index;
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if (!fifo) {
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return -1;
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}
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spin_lock_irqsave(&fifo->lock, flags);
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if (fifo->count == fifo->size) {
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// FIFO full
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index = -1;
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} else {
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// Return index where to get the next data to add to the FIFO
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index = fifo->w++ & (fifo->size-1);
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fifo->count++;
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}
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spin_unlock_irqrestore(&fifo->lock, flags);
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return index;
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}
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/*
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* Remove an entry from the FIFO with the index returned.
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*/
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static inline int fifo_remove(struct fifo *fifo)
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{
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unsigned long flags;
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int index;
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if (!fifo) {
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return -1;
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}
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spin_lock_irqsave(&fifo->lock, flags);
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if (!fifo->count) {
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// FIFO empty
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index = -1;
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} else {
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// Return index where to get the next data from the FIFO
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index = fifo->r++ & (fifo->size-1);
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fifo->count--;
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}
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spin_unlock_irqrestore(&fifo->lock, flags);
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return index;
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}
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/* ======================================================================
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* control pipe
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*/
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typedef void (*ctrl_complete_t)(void *);
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typedef struct ctrl_msg {
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struct usb_ctrlrequest dr;
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ctrl_complete_t complete;
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void *context;
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} ctrl_msg;
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/* FIFO of ctrl messages waiting to be sent */
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#define MAX_EP0_MSG 16
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struct ctrl_msg_fifo {
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struct fifo f;
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struct ctrl_msg data[MAX_EP0_MSG];
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};
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#define MAX_DFRAME_LEN_L1 300
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#define HSCX_BUFMAX 4096
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struct st5481_ctrl {
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struct ctrl_msg_fifo msg_fifo;
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unsigned long busy;
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struct urb *urb;
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};
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struct st5481_intr {
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// struct evt_fifo evt_fifo;
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struct urb *urb;
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};
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struct st5481_d_out {
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struct isdnhdlc_vars hdlc_state;
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struct urb *urb[2]; /* double buffering */
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unsigned long busy;
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struct sk_buff *tx_skb;
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struct FsmInst fsm;
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};
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struct st5481_b_out {
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struct isdnhdlc_vars hdlc_state;
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struct urb *urb[2]; /* double buffering */
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u_char flow_event;
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u_long busy;
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struct sk_buff *tx_skb;
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};
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struct st5481_in {
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struct isdnhdlc_vars hdlc_state;
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struct urb *urb[2]; /* double buffering */
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int mode;
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int bufsize;
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unsigned int num_packets;
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unsigned int packet_size;
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unsigned char ep, counter;
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unsigned char *rcvbuf;
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struct st5481_adapter *adapter;
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struct hisax_if *hisax_if;
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};
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int st5481_setup_in(struct st5481_in *in);
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void st5481_release_in(struct st5481_in *in);
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void st5481_in_mode(struct st5481_in *in, int mode);
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struct st5481_bcs {
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struct hisax_b_if b_if;
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struct st5481_adapter *adapter;
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struct st5481_in b_in;
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struct st5481_b_out b_out;
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int channel;
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int mode;
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};
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struct st5481_adapter {
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struct list_head list;
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int number_of_leds;
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struct usb_device *usb_dev;
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struct hisax_d_if hisax_d_if;
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struct st5481_ctrl ctrl;
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struct st5481_intr intr;
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struct st5481_in d_in;
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struct st5481_d_out d_out;
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unsigned char leds;
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unsigned int led_counter;
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unsigned long event;
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struct FsmInst l1m;
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struct FsmTimer timer;
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struct st5481_bcs bcs[2];
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};
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#define TIMER3_VALUE 7000
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/* ======================================================================
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*
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*/
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/*
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* Submit an URB with error reporting. This is a macro so
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* the __func__ returns the caller function name.
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*/
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#define SUBMIT_URB(urb, mem_flags) \
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({ \
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int status; \
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if ((status = usb_submit_urb(urb, mem_flags)) < 0) { \
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WARN("usb_submit_urb failed,status=%d", status); \
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} \
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status; \
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})
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/*
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* USB double buffering, return the URB index (0 or 1).
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*/
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static inline int get_buf_nr(struct urb *urbs[], struct urb *urb)
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{
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return (urbs[0]==urb ? 0 : 1);
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}
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/* ---------------------------------------------------------------------- */
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/* B Channel */
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int st5481_setup_b(struct st5481_bcs *bcs);
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void st5481_release_b(struct st5481_bcs *bcs);
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void st5481_d_l2l1(struct hisax_if *hisax_d_if, int pr, void *arg);
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/* D Channel */
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int st5481_setup_d(struct st5481_adapter *adapter);
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void st5481_release_d(struct st5481_adapter *adapter);
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void st5481_b_l2l1(struct hisax_if *b_if, int pr, void *arg);
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int st5481_d_init(void);
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void st5481_d_exit(void);
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/* USB */
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void st5481_ph_command(struct st5481_adapter *adapter, unsigned int command);
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int st5481_setup_isocpipes(struct urb* urb[2], struct usb_device *dev,
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unsigned int pipe, int num_packets,
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int packet_size, int buf_size,
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usb_complete_t complete, void *context);
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void st5481_release_isocpipes(struct urb* urb[2]);
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void st5481_usb_pipe_reset(struct st5481_adapter *adapter,
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u_char pipe, ctrl_complete_t complete, void *context);
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void st5481_usb_device_ctrl_msg(struct st5481_adapter *adapter,
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u8 request, u16 value,
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ctrl_complete_t complete, void *context);
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int st5481_setup_usb(struct st5481_adapter *adapter);
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void st5481_release_usb(struct st5481_adapter *adapter);
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void st5481_start(struct st5481_adapter *adapter);
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void st5481_stop(struct st5481_adapter *adapter);
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// ----------------------------------------------------------------------
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// debugging macros
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#define __debug_variable st5481_debug
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#include "hisax_debug.h"
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extern int st5481_debug;
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#ifdef CONFIG_HISAX_DEBUG
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#define DBG_ISO_PACKET(level,urb) \
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if (level & __debug_variable) dump_iso_packet(__func__,urb)
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static void __attribute__((unused))
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dump_iso_packet(const char *name, struct urb *urb)
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{
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int i,j;
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int len,ofs;
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u_char *data;
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printk(KERN_DEBUG "%s: packets=%d,errors=%d\n",
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name,urb->number_of_packets,urb->error_count);
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for (i = 0; i < urb->number_of_packets; ++i) {
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if (urb->pipe & USB_DIR_IN) {
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len = urb->iso_frame_desc[i].actual_length;
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} else {
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len = urb->iso_frame_desc[i].length;
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}
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ofs = urb->iso_frame_desc[i].offset;
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printk(KERN_DEBUG "len=%.2d,ofs=%.3d ",len,ofs);
|
|
if (len) {
|
|
data = urb->transfer_buffer+ofs;
|
|
for (j=0; j < len; j++) {
|
|
printk ("%.2x", data[j]);
|
|
}
|
|
}
|
|
printk("\n");
|
|
}
|
|
}
|
|
|
|
static inline const char *ST5481_CMD_string(int evt)
|
|
{
|
|
static char s[16];
|
|
|
|
switch (evt) {
|
|
case ST5481_CMD_DR: return "DR";
|
|
case ST5481_CMD_RES: return "RES";
|
|
case ST5481_CMD_TM1: return "TM1";
|
|
case ST5481_CMD_TM2: return "TM2";
|
|
case ST5481_CMD_PUP: return "PUP";
|
|
case ST5481_CMD_AR8: return "AR8";
|
|
case ST5481_CMD_AR10: return "AR10";
|
|
case ST5481_CMD_ARL: return "ARL";
|
|
case ST5481_CMD_PDN: return "PDN";
|
|
};
|
|
|
|
sprintf(s,"0x%x",evt);
|
|
return s;
|
|
}
|
|
|
|
#else
|
|
|
|
#define DBG_ISO_PACKET(level,urb) do {} while (0)
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#endif
|