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-rw-r--r--drivers/isdn/hisax/st5481.h529
1 files changed, 529 insertions, 0 deletions
diff --git a/drivers/isdn/hisax/st5481.h b/drivers/isdn/hisax/st5481.h
new file mode 100644
index 000000000..8cd2d8277
--- /dev/null
+++ b/drivers/isdn/hisax/st5481.h
@@ -0,0 +1,529 @@
+/*
+ * Driver for ST5481 USB ISDN modem
+ *
+ * Author Frode Isaksen
+ * Copyright 2001 by Frode Isaksen <fisaksen@bewan.com>
+ * 2001 by Kai Germaschewski <kai.germaschewski@gmx.de>
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ */
+
+#ifndef _ST5481_H_
+#define _ST5481_H_
+
+
+// USB IDs, the Product Id is in the range 0x4810-0x481F
+
+#define ST_VENDOR_ID 0x0483
+#define ST5481_PRODUCT_ID 0x4810
+#define ST5481_PRODUCT_ID_MASK 0xFFF0
+
+// ST5481 endpoints when using alternative setting 3 (2B+D).
+// To get the endpoint address, OR with 0x80 for IN endpoints.
+
+#define EP_CTRL 0x00U /* Control endpoint */
+#define EP_INT 0x01U /* Interrupt endpoint */
+#define EP_B1_OUT 0x02U /* B1 channel out */
+#define EP_B1_IN 0x03U /* B1 channel in */
+#define EP_B2_OUT 0x04U /* B2 channel out */
+#define EP_B2_IN 0x05U /* B2 channel in */
+#define EP_D_OUT 0x06U /* D channel out */
+#define EP_D_IN 0x07U /* D channel in */
+
+// Number of isochronous packets. With 20 packets we get
+// 50 interrupts/sec for each endpoint.
+
+#define NUM_ISO_PACKETS_D 20
+#define NUM_ISO_PACKETS_B 20
+
+// Size of each isochronous packet.
+// In outgoing direction we need to match ISDN data rates:
+// D: 2 bytes / msec -> 16 kbit / s
+// B: 16 bytes / msec -> 64 kbit / s
+#define SIZE_ISO_PACKETS_D_IN 16
+#define SIZE_ISO_PACKETS_D_OUT 2
+#define SIZE_ISO_PACKETS_B_IN 32
+#define SIZE_ISO_PACKETS_B_OUT 8
+
+// If we overrun/underrun, we send one packet with +/- 2 bytes
+#define B_FLOW_ADJUST 2
+
+// Registers that are written using vendor specific device request
+// on endpoint 0.
+
+#define LBA 0x02 /* S loopback */
+#define SET_DEFAULT 0x06 /* Soft reset */
+#define LBB 0x1D /* S maintenance loopback */
+#define STT 0x1e /* S force transmission signals */
+#define SDA_MIN 0x20 /* SDA-sin minimal value */
+#define SDA_MAX 0x21 /* SDA-sin maximal value */
+#define SDELAY_VALUE 0x22 /* Delay between Tx and Rx clock */
+#define IN_D_COUNTER 0x36 /* D receive channel fifo counter */
+#define OUT_D_COUNTER 0x37 /* D transmit channel fifo counter */
+#define IN_B1_COUNTER 0x38 /* B1 receive channel fifo counter */
+#define OUT_B1_COUNTER 0x39 /* B1 transmit channel fifo counter */
+#define IN_B2_COUNTER 0x3a /* B2 receive channel fifo counter */
+#define OUT_B2_COUNTER 0x3b /* B2 transmit channel fifo counter */
+#define FFCTRL_IN_D 0x3C /* D receive channel fifo threshold low */
+#define FFCTRH_IN_D 0x3D /* D receive channel fifo threshold high */
+#define FFCTRL_OUT_D 0x3E /* D transmit channel fifo threshold low */
+#define FFCTRH_OUT_D 0x3F /* D transmit channel fifo threshold high */
+#define FFCTRL_IN_B1 0x40 /* B1 receive channel fifo threshold low */
+#define FFCTRH_IN_B1 0x41 /* B1 receive channel fifo threshold high */
+#define FFCTRL_OUT_B1 0x42 /* B1 transmit channel fifo threshold low */
+#define FFCTRH_OUT_B1 0x43 /* B1 transmit channel fifo threshold high */
+#define FFCTRL_IN_B2 0x44 /* B2 receive channel fifo threshold low */
+#define FFCTRH_IN_B2 0x45 /* B2 receive channel fifo threshold high */
+#define FFCTRL_OUT_B2 0x46 /* B2 transmit channel fifo threshold low */
+#define FFCTRH_OUT_B2 0x47 /* B2 transmit channel fifo threshold high */
+#define MPMSK 0x4A /* Multi purpose interrupt MASK register */
+#define FFMSK_D 0x4c /* D fifo interrupt MASK register */
+#define FFMSK_B1 0x4e /* B1 fifo interrupt MASK register */
+#define FFMSK_B2 0x50 /* B2 fifo interrupt MASK register */
+#define GPIO_DIR 0x52 /* GPIO pins direction registers */
+#define GPIO_OUT 0x53 /* GPIO pins output register */
+#define GPIO_IN 0x54 /* GPIO pins input register */
+#define TXCI 0x56 /* CI command to be transmitted */
+
+
+// Format of the interrupt packet received on endpoint 1:
+//
+// +--------+--------+--------+--------+--------+--------+
+// !MPINT !FFINT_D !FFINT_B1!FFINT_B2!CCIST !GPIO_INT!
+// +--------+--------+--------+--------+--------+--------+
+
+// Offsets in the interrupt packet
+
+#define MPINT 0
+#define FFINT_D 1
+#define FFINT_B1 2
+#define FFINT_B2 3
+#define CCIST 4
+#define GPIO_INT 5
+#define INT_PKT_SIZE 6
+
+// MPINT
+#define LSD_INT 0x80 /* S line activity detected */
+#define RXCI_INT 0x40 /* Indicate primitive arrived */
+#define DEN_INT 0x20 /* Signal enabling data out of D Tx fifo */
+#define DCOLL_INT 0x10 /* D channel collision */
+#define AMIVN_INT 0x04 /* AMI violation number reached 2 */
+#define INFOI_INT 0x04 /* INFOi changed */
+#define DRXON_INT 0x02 /* Reception channel active */
+#define GPCHG_INT 0x01 /* GPIO pin value changed */
+
+// FFINT_x
+#define IN_OVERRUN 0x80 /* In fifo overrun */
+#define OUT_UNDERRUN 0x40 /* Out fifo underrun */
+#define IN_UP 0x20 /* In fifo thresholdh up-crossed */
+#define IN_DOWN 0x10 /* In fifo thresholdl down-crossed */
+#define OUT_UP 0x08 /* Out fifo thresholdh up-crossed */
+#define OUT_DOWN 0x04 /* Out fifo thresholdl down-crossed */
+#define IN_COUNTER_ZEROED 0x02 /* In down-counter reached 0 */
+#define OUT_COUNTER_ZEROED 0x01 /* Out down-counter reached 0 */
+
+#define ANY_REC_INT (IN_OVERRUN + IN_UP + IN_DOWN + IN_COUNTER_ZEROED)
+#define ANY_XMIT_INT (OUT_UNDERRUN + OUT_UP + OUT_DOWN + OUT_COUNTER_ZEROED)
+
+
+// Level 1 commands that are sent using the TXCI device request
+#define ST5481_CMD_DR 0x0 /* Deactivation Request */
+#define ST5481_CMD_RES 0x1 /* state machine RESet */
+#define ST5481_CMD_TM1 0x2 /* Test Mode 1 */
+#define ST5481_CMD_TM2 0x3 /* Test Mode 2 */
+#define ST5481_CMD_PUP 0x7 /* Power UP */
+#define ST5481_CMD_AR8 0x8 /* Activation Request class 1 */
+#define ST5481_CMD_AR10 0x9 /* Activation Request class 2 */
+#define ST5481_CMD_ARL 0xA /* Activation Request Loopback */
+#define ST5481_CMD_PDN 0xF /* Power DoWn */
+
+// Turn on/off the LEDs using the GPIO device request.
+// To use the B LEDs, number_of_leds must be set to 4
+#define B1_LED 0x10U
+#define B2_LED 0x20U
+#define GREEN_LED 0x40U
+#define RED_LED 0x80U
+
+// D channel out states
+enum {
+ ST_DOUT_NONE,
+
+ ST_DOUT_SHORT_INIT,
+ ST_DOUT_SHORT_WAIT_DEN,
+
+ ST_DOUT_LONG_INIT,
+ ST_DOUT_LONG_WAIT_DEN,
+ ST_DOUT_NORMAL,
+
+ ST_DOUT_WAIT_FOR_UNDERRUN,
+ ST_DOUT_WAIT_FOR_NOT_BUSY,
+ ST_DOUT_WAIT_FOR_STOP,
+ ST_DOUT_WAIT_FOR_RESET,
+};
+
+#define DOUT_STATE_COUNT (ST_DOUT_WAIT_FOR_RESET + 1)
+
+// D channel out events
+enum {
+ EV_DOUT_START_XMIT,
+ EV_DOUT_COMPLETE,
+ EV_DOUT_DEN,
+ EV_DOUT_RESETED,
+ EV_DOUT_STOPPED,
+ EV_DOUT_COLL,
+ EV_DOUT_UNDERRUN,
+};
+
+#define DOUT_EVENT_COUNT (EV_DOUT_UNDERRUN + 1)
+
+// ----------------------------------------------------------------------
+
+enum {
+ ST_L1_F3,
+ ST_L1_F4,
+ ST_L1_F6,
+ ST_L1_F7,
+ ST_L1_F8,
+};
+
+#define L1_STATE_COUNT (ST_L1_F8 + 1)
+
+// The first 16 entries match the Level 1 indications that
+// are found at offset 4 (CCIST) in the interrupt packet
+
+enum {
+ EV_IND_DP, // 0000 Deactivation Pending
+ EV_IND_1, // 0001
+ EV_IND_2, // 0010
+ EV_IND_3, // 0011
+ EV_IND_RSY, // 0100 ReSYnchronizing
+ EV_IND_5, // 0101
+ EV_IND_6, // 0110
+ EV_IND_7, // 0111
+ EV_IND_AP, // 1000 Activation Pending
+ EV_IND_9, // 1001
+ EV_IND_10, // 1010
+ EV_IND_11, // 1011
+ EV_IND_AI8, // 1100 Activation Indication class 8
+ EV_IND_AI10,// 1101 Activation Indication class 10
+ EV_IND_AIL, // 1110 Activation Indication Loopback
+ EV_IND_DI, // 1111 Deactivation Indication
+ EV_PH_ACTIVATE_REQ,
+ EV_PH_DEACTIVATE_REQ,
+ EV_TIMER3,
+};
+
+#define L1_EVENT_COUNT (EV_TIMER3 + 1)
+
+#define ERR(format, arg...) \
+ printk(KERN_ERR "%s:%s: " format "\n" , __FILE__, __func__ , ## arg)
+
+#define WARNING(format, arg...) \
+ printk(KERN_WARNING "%s:%s: " format "\n" , __FILE__, __func__ , ## arg)
+
+#define INFO(format, arg...) \
+ printk(KERN_INFO "%s:%s: " format "\n" , __FILE__, __func__ , ## arg)
+
+#include <linux/isdn/hdlc.h>
+#include "fsm.h"
+#include "hisax_if.h"
+#include <linux/skbuff.h>
+
+/* ======================================================================
+ * FIFO handling
+ */
+
+/* Generic FIFO structure */
+struct fifo {
+ u_char r, w, count, size;
+ spinlock_t lock;
+};
+
+/*
+ * Init an FIFO
+ */
+static inline void fifo_init(struct fifo *fifo, int size)
+{
+ fifo->r = fifo->w = fifo->count = 0;
+ fifo->size = size;
+ spin_lock_init(&fifo->lock);
+}
+
+/*
+ * Add an entry to the FIFO
+ */
+static inline int fifo_add(struct fifo *fifo)
+{
+ unsigned long flags;
+ int index;
+
+ if (!fifo) {
+ return -1;
+ }
+
+ spin_lock_irqsave(&fifo->lock, flags);
+ if (fifo->count == fifo->size) {
+ // FIFO full
+ index = -1;
+ } else {
+ // Return index where to get the next data to add to the FIFO
+ index = fifo->w++ & (fifo->size - 1);
+ fifo->count++;
+ }
+ spin_unlock_irqrestore(&fifo->lock, flags);
+ return index;
+}
+
+/*
+ * Remove an entry from the FIFO with the index returned.
+ */
+static inline int fifo_remove(struct fifo *fifo)
+{
+ unsigned long flags;
+ int index;
+
+ if (!fifo) {
+ return -1;
+ }
+
+ spin_lock_irqsave(&fifo->lock, flags);
+ if (!fifo->count) {
+ // FIFO empty
+ index = -1;
+ } else {
+ // Return index where to get the next data from the FIFO
+ index = fifo->r++ & (fifo->size - 1);
+ fifo->count--;
+ }
+ spin_unlock_irqrestore(&fifo->lock, flags);
+
+ return index;
+}
+
+/* ======================================================================
+ * control pipe
+ */
+typedef void (*ctrl_complete_t)(void *);
+
+typedef struct ctrl_msg {
+ struct usb_ctrlrequest dr;
+ ctrl_complete_t complete;
+ void *context;
+} ctrl_msg;
+
+/* FIFO of ctrl messages waiting to be sent */
+#define MAX_EP0_MSG 16
+struct ctrl_msg_fifo {
+ struct fifo f;
+ struct ctrl_msg data[MAX_EP0_MSG];
+};
+
+#define MAX_DFRAME_LEN_L1 300
+#define HSCX_BUFMAX 4096
+
+struct st5481_ctrl {
+ struct ctrl_msg_fifo msg_fifo;
+ unsigned long busy;
+ struct urb *urb;
+};
+
+struct st5481_intr {
+ // struct evt_fifo evt_fifo;
+ struct urb *urb;
+};
+
+struct st5481_d_out {
+ struct isdnhdlc_vars hdlc_state;
+ struct urb *urb[2]; /* double buffering */
+ unsigned long busy;
+ struct sk_buff *tx_skb;
+ struct FsmInst fsm;
+};
+
+struct st5481_b_out {
+ struct isdnhdlc_vars hdlc_state;
+ struct urb *urb[2]; /* double buffering */
+ u_char flow_event;
+ u_long busy;
+ struct sk_buff *tx_skb;
+};
+
+struct st5481_in {
+ struct isdnhdlc_vars hdlc_state;
+ struct urb *urb[2]; /* double buffering */
+ int mode;
+ int bufsize;
+ unsigned int num_packets;
+ unsigned int packet_size;
+ unsigned char ep, counter;
+ unsigned char *rcvbuf;
+ struct st5481_adapter *adapter;
+ struct hisax_if *hisax_if;
+};
+
+int st5481_setup_in(struct st5481_in *in);
+void st5481_release_in(struct st5481_in *in);
+void st5481_in_mode(struct st5481_in *in, int mode);
+
+struct st5481_bcs {
+ struct hisax_b_if b_if;
+ struct st5481_adapter *adapter;
+ struct st5481_in b_in;
+ struct st5481_b_out b_out;
+ int channel;
+ int mode;
+};
+
+struct st5481_adapter {
+ int number_of_leds;
+ struct usb_device *usb_dev;
+ struct hisax_d_if hisax_d_if;
+
+ struct st5481_ctrl ctrl;
+ struct st5481_intr intr;
+ struct st5481_in d_in;
+ struct st5481_d_out d_out;
+
+ unsigned char leds;
+ unsigned int led_counter;
+
+ unsigned long event;
+
+ struct FsmInst l1m;
+ struct FsmTimer timer;
+
+ struct st5481_bcs bcs[2];
+};
+
+#define TIMER3_VALUE 7000
+
+/* ======================================================================
+ *
+ */
+
+/*
+ * Submit an URB with error reporting. This is a macro so
+ * the __func__ returns the caller function name.
+ */
+#define SUBMIT_URB(urb, mem_flags) \
+ ({ \
+ int status; \
+ if ((status = usb_submit_urb(urb, mem_flags)) < 0) { \
+ WARNING("usb_submit_urb failed,status=%d", status); \
+ } \
+ status; \
+ })
+
+/*
+ * USB double buffering, return the URB index (0 or 1).
+ */
+static inline int get_buf_nr(struct urb *urbs[], struct urb *urb)
+{
+ return (urbs[0] == urb ? 0 : 1);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* B Channel */
+
+int st5481_setup_b(struct st5481_bcs *bcs);
+void st5481_release_b(struct st5481_bcs *bcs);
+void st5481_d_l2l1(struct hisax_if *hisax_d_if, int pr, void *arg);
+
+/* D Channel */
+
+int st5481_setup_d(struct st5481_adapter *adapter);
+void st5481_release_d(struct st5481_adapter *adapter);
+void st5481_b_l2l1(struct hisax_if *b_if, int pr, void *arg);
+int st5481_d_init(void);
+void st5481_d_exit(void);
+
+/* USB */
+void st5481_ph_command(struct st5481_adapter *adapter, unsigned int command);
+int st5481_setup_isocpipes(struct urb *urb[2], struct usb_device *dev,
+ unsigned int pipe, int num_packets,
+ int packet_size, int buf_size,
+ usb_complete_t complete, void *context);
+void st5481_release_isocpipes(struct urb *urb[2]);
+
+void st5481_usb_pipe_reset(struct st5481_adapter *adapter,
+ u_char pipe, ctrl_complete_t complete, void *context);
+void st5481_usb_device_ctrl_msg(struct st5481_adapter *adapter,
+ u8 request, u16 value,
+ ctrl_complete_t complete, void *context);
+int st5481_setup_usb(struct st5481_adapter *adapter);
+void st5481_release_usb(struct st5481_adapter *adapter);
+void st5481_start(struct st5481_adapter *adapter);
+void st5481_stop(struct st5481_adapter *adapter);
+
+// ----------------------------------------------------------------------
+// debugging macros
+
+#define __debug_variable st5481_debug
+#include "hisax_debug.h"
+
+extern int st5481_debug;
+
+#ifdef CONFIG_HISAX_DEBUG
+
+#define DBG_ISO_PACKET(level, urb) \
+ if (level & __debug_variable) dump_iso_packet(__func__, urb)
+
+static void __attribute__((unused))
+dump_iso_packet(const char *name, struct urb *urb)
+{
+ int i, j;
+ int len, ofs;
+ u_char *data;
+
+ printk(KERN_DEBUG "%s: packets=%d,errors=%d\n",
+ name, urb->number_of_packets, urb->error_count);
+ for (i = 0; i < urb->number_of_packets; ++i) {
+ if (urb->pipe & USB_DIR_IN) {
+ len = urb->iso_frame_desc[i].actual_length;
+ } else {
+ len = urb->iso_frame_desc[i].length;
+ }
+ ofs = urb->iso_frame_desc[i].offset;
+ 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
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