M: David Sterba <dsterba@suse.cz>
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/jikos/ipwireless_cs.git
-F: drivers/char/pcmcia/ipwireless/
+F: drivers/tty/ipwireless/
IPX NETWORK LAYER
M: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
+++ /dev/null
-#
-# drivers/char/pcmcia/ipwireless/Makefile
-#
-# Makefile for the IPWireless driver
-#
-
-obj-$(CONFIG_IPWIRELESS) += ipwireless.o
-
-ipwireless-y := hardware.o main.o network.o tty.o
-
+++ /dev/null
-/*
- * IPWireless 3G PCMCIA Network Driver
- *
- * Original code
- * by Stephen Blackheath <stephen@blacksapphire.com>,
- * Ben Martel <benm@symmetric.co.nz>
- *
- * Copyrighted as follows:
- * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
- *
- * Various driver changes and rewrites, port to new kernels
- * Copyright (C) 2006-2007 Jiri Kosina
- *
- * Misc code cleanups and updates
- * Copyright (C) 2007 David Sterba
- */
-
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/irq.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/slab.h>
-
-#include "hardware.h"
-#include "setup_protocol.h"
-#include "network.h"
-#include "main.h"
-
-static void ipw_send_setup_packet(struct ipw_hardware *hw);
-static void handle_received_SETUP_packet(struct ipw_hardware *ipw,
- unsigned int address,
- const unsigned char *data, int len,
- int is_last);
-static void ipwireless_setup_timer(unsigned long data);
-static void handle_received_CTRL_packet(struct ipw_hardware *hw,
- unsigned int channel_idx, const unsigned char *data, int len);
-
-/*#define TIMING_DIAGNOSTICS*/
-
-#ifdef TIMING_DIAGNOSTICS
-
-static struct timing_stats {
- unsigned long last_report_time;
- unsigned long read_time;
- unsigned long write_time;
- unsigned long read_bytes;
- unsigned long write_bytes;
- unsigned long start_time;
-};
-
-static void start_timing(void)
-{
- timing_stats.start_time = jiffies;
-}
-
-static void end_read_timing(unsigned length)
-{
- timing_stats.read_time += (jiffies - start_time);
- timing_stats.read_bytes += length + 2;
- report_timing();
-}
-
-static void end_write_timing(unsigned length)
-{
- timing_stats.write_time += (jiffies - start_time);
- timing_stats.write_bytes += length + 2;
- report_timing();
-}
-
-static void report_timing(void)
-{
- unsigned long since = jiffies - timing_stats.last_report_time;
-
- /* If it's been more than one second... */
- if (since >= HZ) {
- int first = (timing_stats.last_report_time == 0);
-
- timing_stats.last_report_time = jiffies;
- if (!first)
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": %u us elapsed - read %lu bytes in %u us, wrote %lu bytes in %u us\n",
- jiffies_to_usecs(since),
- timing_stats.read_bytes,
- jiffies_to_usecs(timing_stats.read_time),
- timing_stats.write_bytes,
- jiffies_to_usecs(timing_stats.write_time));
-
- timing_stats.read_time = 0;
- timing_stats.write_time = 0;
- timing_stats.read_bytes = 0;
- timing_stats.write_bytes = 0;
- }
-}
-#else
-static void start_timing(void) { }
-static void end_read_timing(unsigned length) { }
-static void end_write_timing(unsigned length) { }
-#endif
-
-/* Imported IPW definitions */
-
-#define LL_MTU_V1 318
-#define LL_MTU_V2 250
-#define LL_MTU_MAX (LL_MTU_V1 > LL_MTU_V2 ? LL_MTU_V1 : LL_MTU_V2)
-
-#define PRIO_DATA 2
-#define PRIO_CTRL 1
-#define PRIO_SETUP 0
-
-/* Addresses */
-#define ADDR_SETUP_PROT 0
-
-/* Protocol ids */
-enum {
- /* Identifier for the Com Data protocol */
- TL_PROTOCOLID_COM_DATA = 0,
-
- /* Identifier for the Com Control protocol */
- TL_PROTOCOLID_COM_CTRL = 1,
-
- /* Identifier for the Setup protocol */
- TL_PROTOCOLID_SETUP = 2
-};
-
-/* Number of bytes in NL packet header (cannot do
- * sizeof(nl_packet_header) since it's a bitfield) */
-#define NL_FIRST_PACKET_HEADER_SIZE 3
-
-/* Number of bytes in NL packet header (cannot do
- * sizeof(nl_packet_header) since it's a bitfield) */
-#define NL_FOLLOWING_PACKET_HEADER_SIZE 1
-
-struct nl_first_packet_header {
- unsigned char protocol:3;
- unsigned char address:3;
- unsigned char packet_rank:2;
- unsigned char length_lsb;
- unsigned char length_msb;
-};
-
-struct nl_packet_header {
- unsigned char protocol:3;
- unsigned char address:3;
- unsigned char packet_rank:2;
-};
-
-/* Value of 'packet_rank' above */
-#define NL_INTERMEDIATE_PACKET 0x0
-#define NL_LAST_PACKET 0x1
-#define NL_FIRST_PACKET 0x2
-
-union nl_packet {
- /* Network packet header of the first packet (a special case) */
- struct nl_first_packet_header hdr_first;
- /* Network packet header of the following packets (if any) */
- struct nl_packet_header hdr;
- /* Complete network packet (header + data) */
- unsigned char rawpkt[LL_MTU_MAX];
-} __attribute__ ((__packed__));
-
-#define HW_VERSION_UNKNOWN -1
-#define HW_VERSION_1 1
-#define HW_VERSION_2 2
-
-/* IPW I/O ports */
-#define IOIER 0x00 /* Interrupt Enable Register */
-#define IOIR 0x02 /* Interrupt Source/ACK register */
-#define IODCR 0x04 /* Data Control Register */
-#define IODRR 0x06 /* Data Read Register */
-#define IODWR 0x08 /* Data Write Register */
-#define IOESR 0x0A /* Embedded Driver Status Register */
-#define IORXR 0x0C /* Rx Fifo Register (Host to Embedded) */
-#define IOTXR 0x0E /* Tx Fifo Register (Embedded to Host) */
-
-/* I/O ports and bit definitions for version 1 of the hardware */
-
-/* IER bits*/
-#define IER_RXENABLED 0x1
-#define IER_TXENABLED 0x2
-
-/* ISR bits */
-#define IR_RXINTR 0x1
-#define IR_TXINTR 0x2
-
-/* DCR bits */
-#define DCR_RXDONE 0x1
-#define DCR_TXDONE 0x2
-#define DCR_RXRESET 0x4
-#define DCR_TXRESET 0x8
-
-/* I/O ports and bit definitions for version 2 of the hardware */
-
-struct MEMCCR {
- unsigned short reg_config_option; /* PCCOR: Configuration Option Register */
- unsigned short reg_config_and_status; /* PCCSR: Configuration and Status Register */
- unsigned short reg_pin_replacement; /* PCPRR: Pin Replacemant Register */
- unsigned short reg_socket_and_copy; /* PCSCR: Socket and Copy Register */
- unsigned short reg_ext_status; /* PCESR: Extendend Status Register */
- unsigned short reg_io_base; /* PCIOB: I/O Base Register */
-};
-
-struct MEMINFREG {
- unsigned short memreg_tx_old; /* TX Register (R/W) */
- unsigned short pad1;
- unsigned short memreg_rx_done; /* RXDone Register (R/W) */
- unsigned short pad2;
- unsigned short memreg_rx; /* RX Register (R/W) */
- unsigned short pad3;
- unsigned short memreg_pc_interrupt_ack; /* PC intr Ack Register (W) */
- unsigned short pad4;
- unsigned long memreg_card_present;/* Mask for Host to check (R) for
- * CARD_PRESENT_VALUE */
- unsigned short memreg_tx_new; /* TX2 (new) Register (R/W) */
-};
-
-#define CARD_PRESENT_VALUE (0xBEEFCAFEUL)
-
-#define MEMTX_TX 0x0001
-#define MEMRX_RX 0x0001
-#define MEMRX_RX_DONE 0x0001
-#define MEMRX_PCINTACKK 0x0001
-
-#define NL_NUM_OF_PRIORITIES 3
-#define NL_NUM_OF_PROTOCOLS 3
-#define NL_NUM_OF_ADDRESSES NO_OF_IPW_CHANNELS
-
-struct ipw_hardware {
- unsigned int base_port;
- short hw_version;
- unsigned short ll_mtu;
- spinlock_t lock;
-
- int initializing;
- int init_loops;
- struct timer_list setup_timer;
-
- /* Flag if hw is ready to send next packet */
- int tx_ready;
- /* Count of pending packets to be sent */
- int tx_queued;
- struct list_head tx_queue[NL_NUM_OF_PRIORITIES];
-
- int rx_bytes_queued;
- struct list_head rx_queue;
- /* Pool of rx_packet structures that are not currently used. */
- struct list_head rx_pool;
- int rx_pool_size;
- /* True if reception of data is blocked while userspace processes it. */
- int blocking_rx;
- /* True if there is RX data ready on the hardware. */
- int rx_ready;
- unsigned short last_memtx_serial;
- /*
- * Newer versions of the V2 card firmware send serial numbers in the
- * MemTX register. 'serial_number_detected' is set true when we detect
- * a non-zero serial number (indicating the new firmware). Thereafter,
- * the driver can safely ignore the Timer Recovery re-sends to avoid
- * out-of-sync problems.
- */
- int serial_number_detected;
- struct work_struct work_rx;
-
- /* True if we are to send the set-up data to the hardware. */
- int to_setup;
-
- /* Card has been removed */
- int removed;
- /* Saved irq value when we disable the interrupt. */
- int irq;
- /* True if this driver is shutting down. */
- int shutting_down;
- /* Modem control lines */
- unsigned int control_lines[NL_NUM_OF_ADDRESSES];
- struct ipw_rx_packet *packet_assembler[NL_NUM_OF_ADDRESSES];
-
- struct tasklet_struct tasklet;
-
- /* The handle for the network layer, for the sending of events to it. */
- struct ipw_network *network;
- struct MEMINFREG __iomem *memory_info_regs;
- struct MEMCCR __iomem *memregs_CCR;
- void (*reboot_callback) (void *data);
- void *reboot_callback_data;
-
- unsigned short __iomem *memreg_tx;
-};
-
-/*
- * Packet info structure for tx packets.
- * Note: not all the fields defined here are required for all protocols
- */
-struct ipw_tx_packet {
- struct list_head queue;
- /* channel idx + 1 */
- unsigned char dest_addr;
- /* SETUP, CTRL or DATA */
- unsigned char protocol;
- /* Length of data block, which starts at the end of this structure */
- unsigned short length;
- /* Sending state */
- /* Offset of where we've sent up to so far */
- unsigned long offset;
- /* Count of packet fragments, starting at 0 */
- int fragment_count;
-
- /* Called after packet is sent and before is freed */
- void (*packet_callback) (void *cb_data, unsigned int packet_length);
- void *callback_data;
-};
-
-/* Signals from DTE */
-#define COMCTRL_RTS 0
-#define COMCTRL_DTR 1
-
-/* Signals from DCE */
-#define COMCTRL_CTS 2
-#define COMCTRL_DCD 3
-#define COMCTRL_DSR 4
-#define COMCTRL_RI 5
-
-struct ipw_control_packet_body {
- /* DTE signal or DCE signal */
- unsigned char sig_no;
- /* 0: set signal, 1: clear signal */
- unsigned char value;
-} __attribute__ ((__packed__));
-
-struct ipw_control_packet {
- struct ipw_tx_packet header;
- struct ipw_control_packet_body body;
-};
-
-struct ipw_rx_packet {
- struct list_head queue;
- unsigned int capacity;
- unsigned int length;
- unsigned int protocol;
- unsigned int channel_idx;
-};
-
-static char *data_type(const unsigned char *buf, unsigned length)
-{
- struct nl_packet_header *hdr = (struct nl_packet_header *) buf;
-
- if (length == 0)
- return " ";
-
- if (hdr->packet_rank & NL_FIRST_PACKET) {
- switch (hdr->protocol) {
- case TL_PROTOCOLID_COM_DATA: return "DATA ";
- case TL_PROTOCOLID_COM_CTRL: return "CTRL ";
- case TL_PROTOCOLID_SETUP: return "SETUP";
- default: return "???? ";
- }
- } else
- return " ";
-}
-
-#define DUMP_MAX_BYTES 64
-
-static void dump_data_bytes(const char *type, const unsigned char *data,
- unsigned length)
-{
- char prefix[56];
-
- sprintf(prefix, IPWIRELESS_PCCARD_NAME ": %s %s ",
- type, data_type(data, length));
- print_hex_dump_bytes(prefix, 0, (void *)data,
- length < DUMP_MAX_BYTES ? length : DUMP_MAX_BYTES);
-}
-
-static void swap_packet_bitfield_to_le(unsigned char *data)
-{
-#ifdef __BIG_ENDIAN_BITFIELD
- unsigned char tmp = *data, ret = 0;
-
- /*
- * transform bits from aa.bbb.ccc to ccc.bbb.aa
- */
- ret |= tmp & 0xc0 >> 6;
- ret |= tmp & 0x38 >> 1;
- ret |= tmp & 0x07 << 5;
- *data = ret & 0xff;
-#endif
-}
-
-static void swap_packet_bitfield_from_le(unsigned char *data)
-{
-#ifdef __BIG_ENDIAN_BITFIELD
- unsigned char tmp = *data, ret = 0;
-
- /*
- * transform bits from ccc.bbb.aa to aa.bbb.ccc
- */
- ret |= tmp & 0xe0 >> 5;
- ret |= tmp & 0x1c << 1;
- ret |= tmp & 0x03 << 6;
- *data = ret & 0xff;
-#endif
-}
-
-static void do_send_fragment(struct ipw_hardware *hw, unsigned char *data,
- unsigned length)
-{
- unsigned i;
- unsigned long flags;
-
- start_timing();
- BUG_ON(length > hw->ll_mtu);
-
- if (ipwireless_debug)
- dump_data_bytes("send", data, length);
-
- spin_lock_irqsave(&hw->lock, flags);
-
- hw->tx_ready = 0;
- swap_packet_bitfield_to_le(data);
-
- if (hw->hw_version == HW_VERSION_1) {
- outw((unsigned short) length, hw->base_port + IODWR);
-
- for (i = 0; i < length; i += 2) {
- unsigned short d = data[i];
- __le16 raw_data;
-
- if (i + 1 < length)
- d |= data[i + 1] << 8;
- raw_data = cpu_to_le16(d);
- outw(raw_data, hw->base_port + IODWR);
- }
-
- outw(DCR_TXDONE, hw->base_port + IODCR);
- } else if (hw->hw_version == HW_VERSION_2) {
- outw((unsigned short) length, hw->base_port);
-
- for (i = 0; i < length; i += 2) {
- unsigned short d = data[i];
- __le16 raw_data;
-
- if (i + 1 < length)
- d |= data[i + 1] << 8;
- raw_data = cpu_to_le16(d);
- outw(raw_data, hw->base_port);
- }
- while ((i & 3) != 2) {
- outw((unsigned short) 0xDEAD, hw->base_port);
- i += 2;
- }
- writew(MEMRX_RX, &hw->memory_info_regs->memreg_rx);
- }
-
- spin_unlock_irqrestore(&hw->lock, flags);
-
- end_write_timing(length);
-}
-
-static void do_send_packet(struct ipw_hardware *hw, struct ipw_tx_packet *packet)
-{
- unsigned short fragment_data_len;
- unsigned short data_left = packet->length - packet->offset;
- unsigned short header_size;
- union nl_packet pkt;
-
- header_size =
- (packet->fragment_count == 0)
- ? NL_FIRST_PACKET_HEADER_SIZE
- : NL_FOLLOWING_PACKET_HEADER_SIZE;
- fragment_data_len = hw->ll_mtu - header_size;
- if (data_left < fragment_data_len)
- fragment_data_len = data_left;
-
- /*
- * hdr_first is now in machine bitfield order, which will be swapped
- * to le just before it goes to hw
- */
- pkt.hdr_first.protocol = packet->protocol;
- pkt.hdr_first.address = packet->dest_addr;
- pkt.hdr_first.packet_rank = 0;
-
- /* First packet? */
- if (packet->fragment_count == 0) {
- pkt.hdr_first.packet_rank |= NL_FIRST_PACKET;
- pkt.hdr_first.length_lsb = (unsigned char) packet->length;
- pkt.hdr_first.length_msb =
- (unsigned char) (packet->length >> 8);
- }
-
- memcpy(pkt.rawpkt + header_size,
- ((unsigned char *) packet) + sizeof(struct ipw_tx_packet) +
- packet->offset, fragment_data_len);
- packet->offset += fragment_data_len;
- packet->fragment_count++;
-
- /* Last packet? (May also be first packet.) */
- if (packet->offset == packet->length)
- pkt.hdr_first.packet_rank |= NL_LAST_PACKET;
- do_send_fragment(hw, pkt.rawpkt, header_size + fragment_data_len);
-
- /* If this packet has unsent data, then re-queue it. */
- if (packet->offset < packet->length) {
- /*
- * Re-queue it at the head of the highest priority queue so
- * it goes before all other packets
- */
- unsigned long flags;
-
- spin_lock_irqsave(&hw->lock, flags);
- list_add(&packet->queue, &hw->tx_queue[0]);
- hw->tx_queued++;
- spin_unlock_irqrestore(&hw->lock, flags);
- } else {
- if (packet->packet_callback)
- packet->packet_callback(packet->callback_data,
- packet->length);
- kfree(packet);
- }
-}
-
-static void ipw_setup_hardware(struct ipw_hardware *hw)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&hw->lock, flags);
- if (hw->hw_version == HW_VERSION_1) {
- /* Reset RX FIFO */
- outw(DCR_RXRESET, hw->base_port + IODCR);
- /* SB: Reset TX FIFO */
- outw(DCR_TXRESET, hw->base_port + IODCR);
-
- /* Enable TX and RX interrupts. */
- outw(IER_TXENABLED | IER_RXENABLED, hw->base_port + IOIER);
- } else {
- /*
- * Set INTRACK bit (bit 0), which means we must explicitly
- * acknowledge interrupts by clearing bit 2 of reg_config_and_status.
- */
- unsigned short csr = readw(&hw->memregs_CCR->reg_config_and_status);
-
- csr |= 1;
- writew(csr, &hw->memregs_CCR->reg_config_and_status);
- }
- spin_unlock_irqrestore(&hw->lock, flags);
-}
-
-/*
- * If 'packet' is NULL, then this function allocates a new packet, setting its
- * length to 0 and ensuring it has the specified minimum amount of free space.
- *
- * If 'packet' is not NULL, then this function enlarges it if it doesn't
- * have the specified minimum amount of free space.
- *
- */
-static struct ipw_rx_packet *pool_allocate(struct ipw_hardware *hw,
- struct ipw_rx_packet *packet,
- int minimum_free_space)
-{
-
- if (!packet) {
- unsigned long flags;
-
- spin_lock_irqsave(&hw->lock, flags);
- if (!list_empty(&hw->rx_pool)) {
- packet = list_first_entry(&hw->rx_pool,
- struct ipw_rx_packet, queue);
- hw->rx_pool_size--;
- spin_unlock_irqrestore(&hw->lock, flags);
- list_del(&packet->queue);
- } else {
- const int min_capacity =
- ipwireless_ppp_mru(hw->network) + 2;
- int new_capacity;
-
- spin_unlock_irqrestore(&hw->lock, flags);
- new_capacity =
- (minimum_free_space > min_capacity
- ? minimum_free_space
- : min_capacity);
- packet = kmalloc(sizeof(struct ipw_rx_packet)
- + new_capacity, GFP_ATOMIC);
- if (!packet)
- return NULL;
- packet->capacity = new_capacity;
- }
- packet->length = 0;
- }
-
- if (packet->length + minimum_free_space > packet->capacity) {
- struct ipw_rx_packet *old_packet = packet;
-
- packet = kmalloc(sizeof(struct ipw_rx_packet) +
- old_packet->length + minimum_free_space,
- GFP_ATOMIC);
- if (!packet) {
- kfree(old_packet);
- return NULL;
- }
- memcpy(packet, old_packet,
- sizeof(struct ipw_rx_packet)
- + old_packet->length);
- packet->capacity = old_packet->length + minimum_free_space;
- kfree(old_packet);
- }
-
- return packet;
-}
-
-static void pool_free(struct ipw_hardware *hw, struct ipw_rx_packet *packet)
-{
- if (hw->rx_pool_size > 6)
- kfree(packet);
- else {
- hw->rx_pool_size++;
- list_add(&packet->queue, &hw->rx_pool);
- }
-}
-
-static void queue_received_packet(struct ipw_hardware *hw,
- unsigned int protocol,
- unsigned int address,
- const unsigned char *data, int length,
- int is_last)
-{
- unsigned int channel_idx = address - 1;
- struct ipw_rx_packet *packet = NULL;
- unsigned long flags;
-
- /* Discard packet if channel index is out of range. */
- if (channel_idx >= NL_NUM_OF_ADDRESSES) {
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": data packet has bad address %u\n", address);
- return;
- }
-
- /*
- * ->packet_assembler is safe to touch unlocked, this is the only place
- */
- if (protocol == TL_PROTOCOLID_COM_DATA) {
- struct ipw_rx_packet **assem =
- &hw->packet_assembler[channel_idx];
-
- /*
- * Create a new packet, or assembler already contains one
- * enlarge it by 'length' bytes.
- */
- (*assem) = pool_allocate(hw, *assem, length);
- if (!(*assem)) {
- printk(KERN_ERR IPWIRELESS_PCCARD_NAME
- ": no memory for incomming data packet, dropped!\n");
- return;
- }
- (*assem)->protocol = protocol;
- (*assem)->channel_idx = channel_idx;
-
- /* Append this packet data onto existing data. */
- memcpy((unsigned char *)(*assem) +
- sizeof(struct ipw_rx_packet)
- + (*assem)->length, data, length);
- (*assem)->length += length;
- if (is_last) {
- packet = *assem;
- *assem = NULL;
- /* Count queued DATA bytes only */
- spin_lock_irqsave(&hw->lock, flags);
- hw->rx_bytes_queued += packet->length;
- spin_unlock_irqrestore(&hw->lock, flags);
- }
- } else {
- /* If it's a CTRL packet, don't assemble, just queue it. */
- packet = pool_allocate(hw, NULL, length);
- if (!packet) {
- printk(KERN_ERR IPWIRELESS_PCCARD_NAME
- ": no memory for incomming ctrl packet, dropped!\n");
- return;
- }
- packet->protocol = protocol;
- packet->channel_idx = channel_idx;
- memcpy((unsigned char *)packet + sizeof(struct ipw_rx_packet),
- data, length);
- packet->length = length;
- }
-
- /*
- * If this is the last packet, then send the assembled packet on to the
- * network layer.
- */
- if (packet) {
- spin_lock_irqsave(&hw->lock, flags);
- list_add_tail(&packet->queue, &hw->rx_queue);
- /* Block reception of incoming packets if queue is full. */
- hw->blocking_rx =
- (hw->rx_bytes_queued >= IPWIRELESS_RX_QUEUE_SIZE);
-
- spin_unlock_irqrestore(&hw->lock, flags);
- schedule_work(&hw->work_rx);
- }
-}
-
-/*
- * Workqueue callback
- */
-static void ipw_receive_data_work(struct work_struct *work_rx)
-{
- struct ipw_hardware *hw =
- container_of(work_rx, struct ipw_hardware, work_rx);
- unsigned long flags;
-
- spin_lock_irqsave(&hw->lock, flags);
- while (!list_empty(&hw->rx_queue)) {
- struct ipw_rx_packet *packet =
- list_first_entry(&hw->rx_queue,
- struct ipw_rx_packet, queue);
-
- if (hw->shutting_down)
- break;
- list_del(&packet->queue);
-
- /*
- * Note: ipwireless_network_packet_received must be called in a
- * process context (i.e. via schedule_work) because the tty
- * output code can sleep in the tty_flip_buffer_push call.
- */
- if (packet->protocol == TL_PROTOCOLID_COM_DATA) {
- if (hw->network != NULL) {
- /* If the network hasn't been disconnected. */
- spin_unlock_irqrestore(&hw->lock, flags);
- /*
- * This must run unlocked due to tty processing
- * and mutex locking
- */
- ipwireless_network_packet_received(
- hw->network,
- packet->channel_idx,
- (unsigned char *)packet
- + sizeof(struct ipw_rx_packet),
- packet->length);
- spin_lock_irqsave(&hw->lock, flags);
- }
- /* Count queued DATA bytes only */
- hw->rx_bytes_queued -= packet->length;
- } else {
- /*
- * This is safe to be called locked, callchain does
- * not block
- */
- handle_received_CTRL_packet(hw, packet->channel_idx,
- (unsigned char *)packet
- + sizeof(struct ipw_rx_packet),
- packet->length);
- }
- pool_free(hw, packet);
- /*
- * Unblock reception of incoming packets if queue is no longer
- * full.
- */
- hw->blocking_rx =
- hw->rx_bytes_queued >= IPWIRELESS_RX_QUEUE_SIZE;
- if (hw->shutting_down)
- break;
- }
- spin_unlock_irqrestore(&hw->lock, flags);
-}
-
-static void handle_received_CTRL_packet(struct ipw_hardware *hw,
- unsigned int channel_idx,
- const unsigned char *data, int len)
-{
- const struct ipw_control_packet_body *body =
- (const struct ipw_control_packet_body *) data;
- unsigned int changed_mask;
-
- if (len != sizeof(struct ipw_control_packet_body)) {
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": control packet was %d bytes - wrong size!\n",
- len);
- return;
- }
-
- switch (body->sig_no) {
- case COMCTRL_CTS:
- changed_mask = IPW_CONTROL_LINE_CTS;
- break;
- case COMCTRL_DCD:
- changed_mask = IPW_CONTROL_LINE_DCD;
- break;
- case COMCTRL_DSR:
- changed_mask = IPW_CONTROL_LINE_DSR;
- break;
- case COMCTRL_RI:
- changed_mask = IPW_CONTROL_LINE_RI;
- break;
- default:
- changed_mask = 0;
- }
-
- if (changed_mask != 0) {
- if (body->value)
- hw->control_lines[channel_idx] |= changed_mask;
- else
- hw->control_lines[channel_idx] &= ~changed_mask;
- if (hw->network)
- ipwireless_network_notify_control_line_change(
- hw->network,
- channel_idx,
- hw->control_lines[channel_idx],
- changed_mask);
- }
-}
-
-static void handle_received_packet(struct ipw_hardware *hw,
- const union nl_packet *packet,
- unsigned short len)
-{
- unsigned int protocol = packet->hdr.protocol;
- unsigned int address = packet->hdr.address;
- unsigned int header_length;
- const unsigned char *data;
- unsigned int data_len;
- int is_last = packet->hdr.packet_rank & NL_LAST_PACKET;
-
- if (packet->hdr.packet_rank & NL_FIRST_PACKET)
- header_length = NL_FIRST_PACKET_HEADER_SIZE;
- else
- header_length = NL_FOLLOWING_PACKET_HEADER_SIZE;
-
- data = packet->rawpkt + header_length;
- data_len = len - header_length;
- switch (protocol) {
- case TL_PROTOCOLID_COM_DATA:
- case TL_PROTOCOLID_COM_CTRL:
- queue_received_packet(hw, protocol, address, data, data_len,
- is_last);
- break;
- case TL_PROTOCOLID_SETUP:
- handle_received_SETUP_packet(hw, address, data, data_len,
- is_last);
- break;
- }
-}
-
-static void acknowledge_data_read(struct ipw_hardware *hw)
-{
- if (hw->hw_version == HW_VERSION_1)
- outw(DCR_RXDONE, hw->base_port + IODCR);
- else
- writew(MEMRX_PCINTACKK,
- &hw->memory_info_regs->memreg_pc_interrupt_ack);
-}
-
-/*
- * Retrieve a packet from the IPW hardware.
- */
-static void do_receive_packet(struct ipw_hardware *hw)
-{
- unsigned len;
- unsigned i;
- unsigned char pkt[LL_MTU_MAX];
-
- start_timing();
-
- if (hw->hw_version == HW_VERSION_1) {
- len = inw(hw->base_port + IODRR);
- if (len > hw->ll_mtu) {
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": received a packet of %u bytes - longer than the MTU!\n", len);
- outw(DCR_RXDONE | DCR_RXRESET, hw->base_port + IODCR);
- return;
- }
-
- for (i = 0; i < len; i += 2) {
- __le16 raw_data = inw(hw->base_port + IODRR);
- unsigned short data = le16_to_cpu(raw_data);
-
- pkt[i] = (unsigned char) data;
- pkt[i + 1] = (unsigned char) (data >> 8);
- }
- } else {
- len = inw(hw->base_port);
- if (len > hw->ll_mtu) {
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": received a packet of %u bytes - longer than the MTU!\n", len);
- writew(MEMRX_PCINTACKK,
- &hw->memory_info_regs->memreg_pc_interrupt_ack);
- return;
- }
-
- for (i = 0; i < len; i += 2) {
- __le16 raw_data = inw(hw->base_port);
- unsigned short data = le16_to_cpu(raw_data);
-
- pkt[i] = (unsigned char) data;
- pkt[i + 1] = (unsigned char) (data >> 8);
- }
-
- while ((i & 3) != 2) {
- inw(hw->base_port);
- i += 2;
- }
- }
-
- acknowledge_data_read(hw);
-
- swap_packet_bitfield_from_le(pkt);
-
- if (ipwireless_debug)
- dump_data_bytes("recv", pkt, len);
-
- handle_received_packet(hw, (union nl_packet *) pkt, len);
-
- end_read_timing(len);
-}
-
-static int get_current_packet_priority(struct ipw_hardware *hw)
-{
- /*
- * If we're initializing, don't send anything of higher priority than
- * PRIO_SETUP. The network layer therefore need not care about
- * hardware initialization - any of its stuff will simply be queued
- * until setup is complete.
- */
- return (hw->to_setup || hw->initializing
- ? PRIO_SETUP + 1 : NL_NUM_OF_PRIORITIES);
-}
-
-/*
- * return 1 if something has been received from hw
- */
-static int get_packets_from_hw(struct ipw_hardware *hw)
-{
- int received = 0;
- unsigned long flags;
-
- spin_lock_irqsave(&hw->lock, flags);
- while (hw->rx_ready && !hw->blocking_rx) {
- received = 1;
- hw->rx_ready--;
- spin_unlock_irqrestore(&hw->lock, flags);
-
- do_receive_packet(hw);
-
- spin_lock_irqsave(&hw->lock, flags);
- }
- spin_unlock_irqrestore(&hw->lock, flags);
-
- return received;
-}
-
-/*
- * Send pending packet up to given priority, prioritize SETUP data until
- * hardware is fully setup.
- *
- * return 1 if more packets can be sent
- */
-static int send_pending_packet(struct ipw_hardware *hw, int priority_limit)
-{
- int more_to_send = 0;
- unsigned long flags;
-
- spin_lock_irqsave(&hw->lock, flags);
- if (hw->tx_queued && hw->tx_ready) {
- int priority;
- struct ipw_tx_packet *packet = NULL;
-
- /* Pick a packet */
- for (priority = 0; priority < priority_limit; priority++) {
- if (!list_empty(&hw->tx_queue[priority])) {
- packet = list_first_entry(
- &hw->tx_queue[priority],
- struct ipw_tx_packet,
- queue);
-
- hw->tx_queued--;
- list_del(&packet->queue);
-
- break;
- }
- }
- if (!packet) {
- hw->tx_queued = 0;
- spin_unlock_irqrestore(&hw->lock, flags);
- return 0;
- }
-
- spin_unlock_irqrestore(&hw->lock, flags);
-
- /* Send */
- do_send_packet(hw, packet);
-
- /* Check if more to send */
- spin_lock_irqsave(&hw->lock, flags);
- for (priority = 0; priority < priority_limit; priority++)
- if (!list_empty(&hw->tx_queue[priority])) {
- more_to_send = 1;
- break;
- }
-
- if (!more_to_send)
- hw->tx_queued = 0;
- }
- spin_unlock_irqrestore(&hw->lock, flags);
-
- return more_to_send;
-}
-
-/*
- * Send and receive all queued packets.
- */
-static void ipwireless_do_tasklet(unsigned long hw_)
-{
- struct ipw_hardware *hw = (struct ipw_hardware *) hw_;
- unsigned long flags;
-
- spin_lock_irqsave(&hw->lock, flags);
- if (hw->shutting_down) {
- spin_unlock_irqrestore(&hw->lock, flags);
- return;
- }
-
- if (hw->to_setup == 1) {
- /*
- * Initial setup data sent to hardware
- */
- hw->to_setup = 2;
- spin_unlock_irqrestore(&hw->lock, flags);
-
- ipw_setup_hardware(hw);
- ipw_send_setup_packet(hw);
-
- send_pending_packet(hw, PRIO_SETUP + 1);
- get_packets_from_hw(hw);
- } else {
- int priority_limit = get_current_packet_priority(hw);
- int again;
-
- spin_unlock_irqrestore(&hw->lock, flags);
-
- do {
- again = send_pending_packet(hw, priority_limit);
- again |= get_packets_from_hw(hw);
- } while (again);
- }
-}
-
-/*
- * return true if the card is physically present.
- */
-static int is_card_present(struct ipw_hardware *hw)
-{
- if (hw->hw_version == HW_VERSION_1)
- return inw(hw->base_port + IOIR) != 0xFFFF;
- else
- return readl(&hw->memory_info_regs->memreg_card_present) ==
- CARD_PRESENT_VALUE;
-}
-
-static irqreturn_t ipwireless_handle_v1_interrupt(int irq,
- struct ipw_hardware *hw)
-{
- unsigned short irqn;
-
- irqn = inw(hw->base_port + IOIR);
-
- /* Check if card is present */
- if (irqn == 0xFFFF)
- return IRQ_NONE;
- else if (irqn != 0) {
- unsigned short ack = 0;
- unsigned long flags;
-
- /* Transmit complete. */
- if (irqn & IR_TXINTR) {
- ack |= IR_TXINTR;
- spin_lock_irqsave(&hw->lock, flags);
- hw->tx_ready = 1;
- spin_unlock_irqrestore(&hw->lock, flags);
- }
- /* Received data */
- if (irqn & IR_RXINTR) {
- ack |= IR_RXINTR;
- spin_lock_irqsave(&hw->lock, flags);
- hw->rx_ready++;
- spin_unlock_irqrestore(&hw->lock, flags);
- }
- if (ack != 0) {
- outw(ack, hw->base_port + IOIR);
- tasklet_schedule(&hw->tasklet);
- }
- return IRQ_HANDLED;
- }
- return IRQ_NONE;
-}
-
-static void acknowledge_pcmcia_interrupt(struct ipw_hardware *hw)
-{
- unsigned short csr = readw(&hw->memregs_CCR->reg_config_and_status);
-
- csr &= 0xfffd;
- writew(csr, &hw->memregs_CCR->reg_config_and_status);
-}
-
-static irqreturn_t ipwireless_handle_v2_v3_interrupt(int irq,
- struct ipw_hardware *hw)
-{
- int tx = 0;
- int rx = 0;
- int rx_repeat = 0;
- int try_mem_tx_old;
- unsigned long flags;
-
- do {
-
- unsigned short memtx = readw(hw->memreg_tx);
- unsigned short memtx_serial;
- unsigned short memrxdone =
- readw(&hw->memory_info_regs->memreg_rx_done);
-
- try_mem_tx_old = 0;
-
- /* check whether the interrupt was generated by ipwireless card */
- if (!(memtx & MEMTX_TX) && !(memrxdone & MEMRX_RX_DONE)) {
-
- /* check if the card uses memreg_tx_old register */
- if (hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) {
- memtx = readw(&hw->memory_info_regs->memreg_tx_old);
- if (memtx & MEMTX_TX) {
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": Using memreg_tx_old\n");
- hw->memreg_tx =
- &hw->memory_info_regs->memreg_tx_old;
- } else {
- return IRQ_NONE;
- }
- } else
- return IRQ_NONE;
- }
-
- /*
- * See if the card is physically present. Note that while it is
- * powering up, it appears not to be present.
- */
- if (!is_card_present(hw)) {
- acknowledge_pcmcia_interrupt(hw);
- return IRQ_HANDLED;
- }
-
- memtx_serial = memtx & (unsigned short) 0xff00;
- if (memtx & MEMTX_TX) {
- writew(memtx_serial, hw->memreg_tx);
-
- if (hw->serial_number_detected) {
- if (memtx_serial != hw->last_memtx_serial) {
- hw->last_memtx_serial = memtx_serial;
- spin_lock_irqsave(&hw->lock, flags);
- hw->rx_ready++;
- spin_unlock_irqrestore(&hw->lock, flags);
- rx = 1;
- } else
- /* Ignore 'Timer Recovery' duplicates. */
- rx_repeat = 1;
- } else {
- /*
- * If a non-zero serial number is seen, then enable
- * serial number checking.
- */
- if (memtx_serial != 0) {
- hw->serial_number_detected = 1;
- printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
- ": memreg_tx serial num detected\n");
-
- spin_lock_irqsave(&hw->lock, flags);
- hw->rx_ready++;
- spin_unlock_irqrestore(&hw->lock, flags);
- }
- rx = 1;
- }
- }
- if (memrxdone & MEMRX_RX_DONE) {
- writew(0, &hw->memory_info_regs->memreg_rx_done);
- spin_lock_irqsave(&hw->lock, flags);
- hw->tx_ready = 1;
- spin_unlock_irqrestore(&hw->lock, flags);
- tx = 1;
- }
- if (tx)
- writew(MEMRX_PCINTACKK,
- &hw->memory_info_regs->memreg_pc_interrupt_ack);
-
- acknowledge_pcmcia_interrupt(hw);
-
- if (tx || rx)
- tasklet_schedule(&hw->tasklet);
- else if (!rx_repeat) {
- if (hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) {
- if (hw->serial_number_detected)
- printk(KERN_WARNING IPWIRELESS_PCCARD_NAME
- ": spurious interrupt - new_tx mode\n");
- else {
- printk(KERN_WARNING IPWIRELESS_PCCARD_NAME
- ": no valid memreg_tx value - switching to the old memreg_tx\n");
- hw->memreg_tx =
- &hw->memory_info_regs->memreg_tx_old;
- try_mem_tx_old = 1;
- }
- } else
- printk(KERN_WARNING IPWIRELESS_PCCARD_NAME
- ": spurious interrupt - old_tx mode\n");
- }
-
- } while (try_mem_tx_old == 1);
-
- return IRQ_HANDLED;
-}
-
-irqreturn_t ipwireless_interrupt(int irq, void *dev_id)
-{
- struct ipw_dev *ipw = dev_id;
-
- if (ipw->hardware->hw_version == HW_VERSION_1)
- return ipwireless_handle_v1_interrupt(irq, ipw->hardware);
- else
- return ipwireless_handle_v2_v3_interrupt(irq, ipw->hardware);
-}
-
-static void flush_packets_to_hw(struct ipw_hardware *hw)
-{
- int priority_limit;
- unsigned long flags;
-
- spin_lock_irqsave(&hw->lock, flags);
- priority_limit = get_current_packet_priority(hw);
- spin_unlock_irqrestore(&hw->lock, flags);
-
- while (send_pending_packet(hw, priority_limit));
-}
-
-static void send_packet(struct ipw_hardware *hw, int priority,
- struct ipw_tx_packet *packet)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&hw->lock, flags);
- list_add_tail(&packet->queue, &hw->tx_queue[priority]);
- hw->tx_queued++;
- spin_unlock_irqrestore(&hw->lock, flags);
-
- flush_packets_to_hw(hw);
-}
-
-/* Create data packet, non-atomic allocation */
-static void *alloc_data_packet(int data_size,
- unsigned char dest_addr,
- unsigned char protocol)
-{
- struct ipw_tx_packet *packet = kzalloc(
- sizeof(struct ipw_tx_packet) + data_size,
- GFP_ATOMIC);
-
- if (!packet)
- return NULL;
-
- INIT_LIST_HEAD(&packet->queue);
- packet->dest_addr = dest_addr;
- packet->protocol = protocol;
- packet->length = data_size;
-
- return packet;
-}
-
-static void *alloc_ctrl_packet(int header_size,
- unsigned char dest_addr,
- unsigned char protocol,
- unsigned char sig_no)
-{
- /*
- * sig_no is located right after ipw_tx_packet struct in every
- * CTRL or SETUP packets, we can use ipw_control_packet as a
- * common struct
- */
- struct ipw_control_packet *packet = kzalloc(header_size, GFP_ATOMIC);
-
- if (!packet)
- return NULL;
-
- INIT_LIST_HEAD(&packet->header.queue);
- packet->header.dest_addr = dest_addr;
- packet->header.protocol = protocol;
- packet->header.length = header_size - sizeof(struct ipw_tx_packet);
- packet->body.sig_no = sig_no;
-
- return packet;
-}
-
-int ipwireless_send_packet(struct ipw_hardware *hw, unsigned int channel_idx,
- const unsigned char *data, unsigned int length,
- void (*callback) (void *cb, unsigned int length),
- void *callback_data)
-{
- struct ipw_tx_packet *packet;
-
- packet = alloc_data_packet(length, (channel_idx + 1),
- TL_PROTOCOLID_COM_DATA);
- if (!packet)
- return -ENOMEM;
- packet->packet_callback = callback;
- packet->callback_data = callback_data;
- memcpy((unsigned char *) packet + sizeof(struct ipw_tx_packet), data,
- length);
-
- send_packet(hw, PRIO_DATA, packet);
- return 0;
-}
-
-static int set_control_line(struct ipw_hardware *hw, int prio,
- unsigned int channel_idx, int line, int state)
-{
- struct ipw_control_packet *packet;
- int protocolid = TL_PROTOCOLID_COM_CTRL;
-
- if (prio == PRIO_SETUP)
- protocolid = TL_PROTOCOLID_SETUP;
-
- packet = alloc_ctrl_packet(sizeof(struct ipw_control_packet),
- (channel_idx + 1), protocolid, line);
- if (!packet)
- return -ENOMEM;
- packet->header.length = sizeof(struct ipw_control_packet_body);
- packet->body.value = (state == 0 ? 0 : 1);
- send_packet(hw, prio, &packet->header);
- return 0;
-}
-
-
-static int set_DTR(struct ipw_hardware *hw, int priority,
- unsigned int channel_idx, int state)
-{
- if (state != 0)
- hw->control_lines[channel_idx] |= IPW_CONTROL_LINE_DTR;
- else
- hw->control_lines[channel_idx] &= ~IPW_CONTROL_LINE_DTR;
-
- return set_control_line(hw, priority, channel_idx, COMCTRL_DTR, state);
-}
-
-static int set_RTS(struct ipw_hardware *hw, int priority,
- unsigned int channel_idx, int state)
-{
- if (state != 0)
- hw->control_lines[channel_idx] |= IPW_CONTROL_LINE_RTS;
- else
- hw->control_lines[channel_idx] &= ~IPW_CONTROL_LINE_RTS;
-
- return set_control_line(hw, priority, channel_idx, COMCTRL_RTS, state);
-}
-
-int ipwireless_set_DTR(struct ipw_hardware *hw, unsigned int channel_idx,
- int state)
-{
- return set_DTR(hw, PRIO_CTRL, channel_idx, state);
-}
-
-int ipwireless_set_RTS(struct ipw_hardware *hw, unsigned int channel_idx,
- int state)
-{
- return set_RTS(hw, PRIO_CTRL, channel_idx, state);
-}
-
-struct ipw_setup_get_version_query_packet {
- struct ipw_tx_packet header;
- struct tl_setup_get_version_qry body;
-};
-
-struct ipw_setup_config_packet {
- struct ipw_tx_packet header;
- struct tl_setup_config_msg body;
-};
-
-struct ipw_setup_config_done_packet {
- struct ipw_tx_packet header;
- struct tl_setup_config_done_msg body;
-};
-
-struct ipw_setup_open_packet {
- struct ipw_tx_packet header;
- struct tl_setup_open_msg body;
-};
-
-struct ipw_setup_info_packet {
- struct ipw_tx_packet header;
- struct tl_setup_info_msg body;
-};
-
-struct ipw_setup_reboot_msg_ack {
- struct ipw_tx_packet header;
- struct TlSetupRebootMsgAck body;
-};
-
-/* This handles the actual initialization of the card */
-static void __handle_setup_get_version_rsp(struct ipw_hardware *hw)
-{
- struct ipw_setup_config_packet *config_packet;
- struct ipw_setup_config_done_packet *config_done_packet;
- struct ipw_setup_open_packet *open_packet;
- struct ipw_setup_info_packet *info_packet;
- int port;
- unsigned int channel_idx;
-
- /* generate config packet */
- for (port = 1; port <= NL_NUM_OF_ADDRESSES; port++) {
- config_packet = alloc_ctrl_packet(
- sizeof(struct ipw_setup_config_packet),
- ADDR_SETUP_PROT,
- TL_PROTOCOLID_SETUP,
- TL_SETUP_SIGNO_CONFIG_MSG);
- if (!config_packet)
- goto exit_nomem;
- config_packet->header.length = sizeof(struct tl_setup_config_msg);
- config_packet->body.port_no = port;
- config_packet->body.prio_data = PRIO_DATA;
- config_packet->body.prio_ctrl = PRIO_CTRL;
- send_packet(hw, PRIO_SETUP, &config_packet->header);
- }
- config_done_packet = alloc_ctrl_packet(
- sizeof(struct ipw_setup_config_done_packet),
- ADDR_SETUP_PROT,
- TL_PROTOCOLID_SETUP,
- TL_SETUP_SIGNO_CONFIG_DONE_MSG);
- if (!config_done_packet)
- goto exit_nomem;
- config_done_packet->header.length = sizeof(struct tl_setup_config_done_msg);
- send_packet(hw, PRIO_SETUP, &config_done_packet->header);
-
- /* generate open packet */
- for (port = 1; port <= NL_NUM_OF_ADDRESSES; port++) {
- open_packet = alloc_ctrl_packet(
- sizeof(struct ipw_setup_open_packet),
- ADDR_SETUP_PROT,
- TL_PROTOCOLID_SETUP,
- TL_SETUP_SIGNO_OPEN_MSG);
- if (!open_packet)
- goto exit_nomem;
- open_packet->header.length = sizeof(struct tl_setup_open_msg);
- open_packet->body.port_no = port;
- send_packet(hw, PRIO_SETUP, &open_packet->header);
- }
- for (channel_idx = 0;
- channel_idx < NL_NUM_OF_ADDRESSES; channel_idx++) {
- int ret;
-
- ret = set_DTR(hw, PRIO_SETUP, channel_idx,
- (hw->control_lines[channel_idx] &
- IPW_CONTROL_LINE_DTR) != 0);
- if (ret) {
- printk(KERN_ERR IPWIRELESS_PCCARD_NAME
- ": error setting DTR (%d)\n", ret);
- return;
- }
-
- set_RTS(hw, PRIO_SETUP, channel_idx,
- (hw->control_lines [channel_idx] &
- IPW_CONTROL_LINE_RTS) != 0);
- if (ret) {
- printk(KERN_ERR IPWIRELESS_PCCARD_NAME
- ": error setting RTS (%d)\n", ret);
- return;
- }
- }
- /*
- * For NDIS we assume that we are using sync PPP frames, for COM async.
- * This driver uses NDIS mode too. We don't bother with translation
- * from async -> sync PPP.
- */
- info_packet = alloc_ctrl_packet(sizeof(struct ipw_setup_info_packet),
- ADDR_SETUP_PROT,
- TL_PROTOCOLID_SETUP,
- TL_SETUP_SIGNO_INFO_MSG);
- if (!info_packet)
- goto exit_nomem;
- info_packet->header.length = sizeof(struct tl_setup_info_msg);
- info_packet->body.driver_type = NDISWAN_DRIVER;
- info_packet->body.major_version = NDISWAN_DRIVER_MAJOR_VERSION;
- info_packet->body.minor_version = NDISWAN_DRIVER_MINOR_VERSION;
- send_packet(hw, PRIO_SETUP, &info_packet->header);
-
- /* Initialization is now complete, so we clear the 'to_setup' flag */
- hw->to_setup = 0;
-
- return;
-
-exit_nomem:
- printk(KERN_ERR IPWIRELESS_PCCARD_NAME
- ": not enough memory to alloc control packet\n");
- hw->to_setup = -1;
-}
-
-static void handle_setup_get_version_rsp(struct ipw_hardware *hw,
- unsigned char vers_no)
-{
- del_timer(&hw->setup_timer);
- hw->initializing = 0;
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME ": card is ready.\n");
-
- if (vers_no == TL_SETUP_VERSION)
- __handle_setup_get_version_rsp(hw);
- else
- printk(KERN_ERR IPWIRELESS_PCCARD_NAME
- ": invalid hardware version no %u\n",
- (unsigned int) vers_no);
-}
-
-static void ipw_send_setup_packet(struct ipw_hardware *hw)
-{
- struct ipw_setup_get_version_query_packet *ver_packet;
-
- ver_packet = alloc_ctrl_packet(
- sizeof(struct ipw_setup_get_version_query_packet),
- ADDR_SETUP_PROT, TL_PROTOCOLID_SETUP,
- TL_SETUP_SIGNO_GET_VERSION_QRY);
- ver_packet->header.length = sizeof(struct tl_setup_get_version_qry);
-
- /*
- * Response is handled in handle_received_SETUP_packet
- */
- send_packet(hw, PRIO_SETUP, &ver_packet->header);
-}
-
-static void handle_received_SETUP_packet(struct ipw_hardware *hw,
- unsigned int address,
- const unsigned char *data, int len,
- int is_last)
-{
- const union ipw_setup_rx_msg *rx_msg = (const union ipw_setup_rx_msg *) data;
-
- if (address != ADDR_SETUP_PROT) {
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": setup packet has bad address %d\n", address);
- return;
- }
-
- switch (rx_msg->sig_no) {
- case TL_SETUP_SIGNO_GET_VERSION_RSP:
- if (hw->to_setup)
- handle_setup_get_version_rsp(hw,
- rx_msg->version_rsp_msg.version);
- break;
-
- case TL_SETUP_SIGNO_OPEN_MSG:
- if (ipwireless_debug) {
- unsigned int channel_idx = rx_msg->open_msg.port_no - 1;
-
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": OPEN_MSG [channel %u] reply received\n",
- channel_idx);
- }
- break;
-
- case TL_SETUP_SIGNO_INFO_MSG_ACK:
- if (ipwireless_debug)
- printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
- ": card successfully configured as NDISWAN\n");
- break;
-
- case TL_SETUP_SIGNO_REBOOT_MSG:
- if (hw->to_setup)
- printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
- ": Setup not completed - ignoring reboot msg\n");
- else {
- struct ipw_setup_reboot_msg_ack *packet;
-
- printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
- ": Acknowledging REBOOT message\n");
- packet = alloc_ctrl_packet(
- sizeof(struct ipw_setup_reboot_msg_ack),
- ADDR_SETUP_PROT, TL_PROTOCOLID_SETUP,
- TL_SETUP_SIGNO_REBOOT_MSG_ACK);
- packet->header.length =
- sizeof(struct TlSetupRebootMsgAck);
- send_packet(hw, PRIO_SETUP, &packet->header);
- if (hw->reboot_callback)
- hw->reboot_callback(hw->reboot_callback_data);
- }
- break;
-
- default:
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": unknown setup message %u received\n",
- (unsigned int) rx_msg->sig_no);
- }
-}
-
-static void do_close_hardware(struct ipw_hardware *hw)
-{
- unsigned int irqn;
-
- if (hw->hw_version == HW_VERSION_1) {
- /* Disable TX and RX interrupts. */
- outw(0, hw->base_port + IOIER);
-
- /* Acknowledge any outstanding interrupt requests */
- irqn = inw(hw->base_port + IOIR);
- if (irqn & IR_TXINTR)
- outw(IR_TXINTR, hw->base_port + IOIR);
- if (irqn & IR_RXINTR)
- outw(IR_RXINTR, hw->base_port + IOIR);
-
- synchronize_irq(hw->irq);
- }
-}
-
-struct ipw_hardware *ipwireless_hardware_create(void)
-{
- int i;
- struct ipw_hardware *hw =
- kzalloc(sizeof(struct ipw_hardware), GFP_KERNEL);
-
- if (!hw)
- return NULL;
-
- hw->irq = -1;
- hw->initializing = 1;
- hw->tx_ready = 1;
- hw->rx_bytes_queued = 0;
- hw->rx_pool_size = 0;
- hw->last_memtx_serial = (unsigned short) 0xffff;
- for (i = 0; i < NL_NUM_OF_PRIORITIES; i++)
- INIT_LIST_HEAD(&hw->tx_queue[i]);
-
- INIT_LIST_HEAD(&hw->rx_queue);
- INIT_LIST_HEAD(&hw->rx_pool);
- spin_lock_init(&hw->lock);
- tasklet_init(&hw->tasklet, ipwireless_do_tasklet, (unsigned long) hw);
- INIT_WORK(&hw->work_rx, ipw_receive_data_work);
- setup_timer(&hw->setup_timer, ipwireless_setup_timer,
- (unsigned long) hw);
-
- return hw;
-}
-
-void ipwireless_init_hardware_v1(struct ipw_hardware *hw,
- unsigned int base_port,
- void __iomem *attr_memory,
- void __iomem *common_memory,
- int is_v2_card,
- void (*reboot_callback) (void *data),
- void *reboot_callback_data)
-{
- if (hw->removed) {
- hw->removed = 0;
- enable_irq(hw->irq);
- }
- hw->base_port = base_port;
- hw->hw_version = (is_v2_card ? HW_VERSION_2 : HW_VERSION_1);
- hw->ll_mtu = (hw->hw_version == HW_VERSION_1 ? LL_MTU_V1 : LL_MTU_V2);
- hw->memregs_CCR = (struct MEMCCR __iomem *)
- ((unsigned short __iomem *) attr_memory + 0x200);
- hw->memory_info_regs = (struct MEMINFREG __iomem *) common_memory;
- hw->memreg_tx = &hw->memory_info_regs->memreg_tx_new;
- hw->reboot_callback = reboot_callback;
- hw->reboot_callback_data = reboot_callback_data;
-}
-
-void ipwireless_init_hardware_v2_v3(struct ipw_hardware *hw)
-{
- hw->initializing = 1;
- hw->init_loops = 0;
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": waiting for card to start up...\n");
- ipwireless_setup_timer((unsigned long) hw);
-}
-
-static void ipwireless_setup_timer(unsigned long data)
-{
- struct ipw_hardware *hw = (struct ipw_hardware *) data;
-
- hw->init_loops++;
-
- if (hw->init_loops == TL_SETUP_MAX_VERSION_QRY &&
- hw->hw_version == HW_VERSION_2 &&
- hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) {
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": failed to startup using TX2, trying TX\n");
-
- hw->memreg_tx = &hw->memory_info_regs->memreg_tx_old;
- hw->init_loops = 0;
- }
- /* Give up after a certain number of retries */
- if (hw->init_loops == TL_SETUP_MAX_VERSION_QRY) {
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": card failed to start up!\n");
- hw->initializing = 0;
- } else {
- /* Do not attempt to write to the board if it is not present. */
- if (is_card_present(hw)) {
- unsigned long flags;
-
- spin_lock_irqsave(&hw->lock, flags);
- hw->to_setup = 1;
- hw->tx_ready = 1;
- spin_unlock_irqrestore(&hw->lock, flags);
- tasklet_schedule(&hw->tasklet);
- }
-
- mod_timer(&hw->setup_timer,
- jiffies + msecs_to_jiffies(TL_SETUP_VERSION_QRY_TMO));
- }
-}
-
-/*
- * Stop any interrupts from executing so that, once this function returns,
- * other layers of the driver can be sure they won't get any more callbacks.
- * Thus must be called on a proper process context.
- */
-void ipwireless_stop_interrupts(struct ipw_hardware *hw)
-{
- if (!hw->shutting_down) {
- /* Tell everyone we are going down. */
- hw->shutting_down = 1;
- del_timer(&hw->setup_timer);
-
- /* Prevent the hardware from sending any more interrupts */
- do_close_hardware(hw);
- }
-}
-
-void ipwireless_hardware_free(struct ipw_hardware *hw)
-{
- int i;
- struct ipw_rx_packet *rp, *rq;
- struct ipw_tx_packet *tp, *tq;
-
- ipwireless_stop_interrupts(hw);
-
- flush_work_sync(&hw->work_rx);
-
- for (i = 0; i < NL_NUM_OF_ADDRESSES; i++)
- if (hw->packet_assembler[i] != NULL)
- kfree(hw->packet_assembler[i]);
-
- for (i = 0; i < NL_NUM_OF_PRIORITIES; i++)
- list_for_each_entry_safe(tp, tq, &hw->tx_queue[i], queue) {
- list_del(&tp->queue);
- kfree(tp);
- }
-
- list_for_each_entry_safe(rp, rq, &hw->rx_queue, queue) {
- list_del(&rp->queue);
- kfree(rp);
- }
-
- list_for_each_entry_safe(rp, rq, &hw->rx_pool, queue) {
- list_del(&rp->queue);
- kfree(rp);
- }
- kfree(hw);
-}
-
-/*
- * Associate the specified network with this hardware, so it will receive events
- * from it.
- */
-void ipwireless_associate_network(struct ipw_hardware *hw,
- struct ipw_network *network)
-{
- hw->network = network;
-}
+++ /dev/null
-/*
- * IPWireless 3G PCMCIA Network Driver
- *
- * Original code
- * by Stephen Blackheath <stephen@blacksapphire.com>,
- * Ben Martel <benm@symmetric.co.nz>
- *
- * Copyrighted as follows:
- * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
- *
- * Various driver changes and rewrites, port to new kernels
- * Copyright (C) 2006-2007 Jiri Kosina
- *
- * Misc code cleanups and updates
- * Copyright (C) 2007 David Sterba
- */
-
-#ifndef _IPWIRELESS_CS_HARDWARE_H_
-#define _IPWIRELESS_CS_HARDWARE_H_
-
-#include <linux/types.h>
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-
-#define IPW_CONTROL_LINE_CTS 0x0001
-#define IPW_CONTROL_LINE_DCD 0x0002
-#define IPW_CONTROL_LINE_DSR 0x0004
-#define IPW_CONTROL_LINE_RI 0x0008
-#define IPW_CONTROL_LINE_DTR 0x0010
-#define IPW_CONTROL_LINE_RTS 0x0020
-
-struct ipw_hardware;
-struct ipw_network;
-
-struct ipw_hardware *ipwireless_hardware_create(void);
-void ipwireless_hardware_free(struct ipw_hardware *hw);
-irqreturn_t ipwireless_interrupt(int irq, void *dev_id);
-int ipwireless_set_DTR(struct ipw_hardware *hw, unsigned int channel_idx,
- int state);
-int ipwireless_set_RTS(struct ipw_hardware *hw, unsigned int channel_idx,
- int state);
-int ipwireless_send_packet(struct ipw_hardware *hw,
- unsigned int channel_idx,
- const unsigned char *data,
- unsigned int length,
- void (*packet_sent_callback) (void *cb,
- unsigned int length),
- void *sent_cb_data);
-void ipwireless_associate_network(struct ipw_hardware *hw,
- struct ipw_network *net);
-void ipwireless_stop_interrupts(struct ipw_hardware *hw);
-void ipwireless_init_hardware_v1(struct ipw_hardware *hw,
- unsigned int base_port,
- void __iomem *attr_memory,
- void __iomem *common_memory,
- int is_v2_card,
- void (*reboot_cb) (void *data),
- void *reboot_cb_data);
-void ipwireless_init_hardware_v2_v3(struct ipw_hardware *hw);
-void ipwireless_sleep(unsigned int tenths);
-
-#endif
+++ /dev/null
-/*
- * IPWireless 3G PCMCIA Network Driver
- *
- * Original code
- * by Stephen Blackheath <stephen@blacksapphire.com>,
- * Ben Martel <benm@symmetric.co.nz>
- *
- * Copyrighted as follows:
- * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
- *
- * Various driver changes and rewrites, port to new kernels
- * Copyright (C) 2006-2007 Jiri Kosina
- *
- * Misc code cleanups and updates
- * Copyright (C) 2007 David Sterba
- */
-
-#include "hardware.h"
-#include "network.h"
-#include "main.h"
-#include "tty.h"
-
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/io.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-
-#include <pcmcia/cisreg.h>
-#include <pcmcia/device_id.h>
-#include <pcmcia/ss.h>
-#include <pcmcia/ds.h>
-
-static struct pcmcia_device_id ipw_ids[] = {
- PCMCIA_DEVICE_MANF_CARD(0x02f2, 0x0100),
- PCMCIA_DEVICE_MANF_CARD(0x02f2, 0x0200),
- PCMCIA_DEVICE_NULL
-};
-MODULE_DEVICE_TABLE(pcmcia, ipw_ids);
-
-static void ipwireless_detach(struct pcmcia_device *link);
-
-/*
- * Module params
- */
-/* Debug mode: more verbose, print sent/recv bytes */
-int ipwireless_debug;
-int ipwireless_loopback;
-int ipwireless_out_queue = 10;
-
-module_param_named(debug, ipwireless_debug, int, 0);
-module_param_named(loopback, ipwireless_loopback, int, 0);
-module_param_named(out_queue, ipwireless_out_queue, int, 0);
-MODULE_PARM_DESC(debug, "switch on debug messages [0]");
-MODULE_PARM_DESC(loopback,
- "debug: enable ras_raw channel [0]");
-MODULE_PARM_DESC(out_queue, "debug: set size of outgoing PPP queue [10]");
-
-/* Executes in process context. */
-static void signalled_reboot_work(struct work_struct *work_reboot)
-{
- struct ipw_dev *ipw = container_of(work_reboot, struct ipw_dev,
- work_reboot);
- struct pcmcia_device *link = ipw->link;
- pcmcia_reset_card(link->socket);
-}
-
-static void signalled_reboot_callback(void *callback_data)
-{
- struct ipw_dev *ipw = (struct ipw_dev *) callback_data;
-
- /* Delegate to process context. */
- schedule_work(&ipw->work_reboot);
-}
-
-static int ipwireless_probe(struct pcmcia_device *p_dev, void *priv_data)
-{
- struct ipw_dev *ipw = priv_data;
- struct resource *io_resource;
- int ret;
-
- p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
- p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
-
- /* 0x40 causes it to generate level mode interrupts. */
- /* 0x04 enables IREQ pin. */
- p_dev->config_index |= 0x44;
- p_dev->io_lines = 16;
- ret = pcmcia_request_io(p_dev);
- if (ret)
- return ret;
-
- io_resource = request_region(p_dev->resource[0]->start,
- resource_size(p_dev->resource[0]),
- IPWIRELESS_PCCARD_NAME);
-
- p_dev->resource[2]->flags |=
- WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_CM | WIN_ENABLE;
-
- ret = pcmcia_request_window(p_dev, p_dev->resource[2], 0);
- if (ret != 0)
- goto exit1;
-
- ret = pcmcia_map_mem_page(p_dev, p_dev->resource[2], p_dev->card_addr);
- if (ret != 0)
- goto exit2;
-
- ipw->is_v2_card = resource_size(p_dev->resource[2]) == 0x100;
-
- ipw->attr_memory = ioremap(p_dev->resource[2]->start,
- resource_size(p_dev->resource[2]));
- request_mem_region(p_dev->resource[2]->start,
- resource_size(p_dev->resource[2]),
- IPWIRELESS_PCCARD_NAME);
-
- p_dev->resource[3]->flags |= WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_AM |
- WIN_ENABLE;
- p_dev->resource[3]->end = 0; /* this used to be 0x1000 */
- ret = pcmcia_request_window(p_dev, p_dev->resource[3], 0);
- if (ret != 0)
- goto exit2;
-
- ret = pcmcia_map_mem_page(p_dev, p_dev->resource[3], 0);
- if (ret != 0)
- goto exit3;
-
- ipw->attr_memory = ioremap(p_dev->resource[3]->start,
- resource_size(p_dev->resource[3]));
- request_mem_region(p_dev->resource[3]->start,
- resource_size(p_dev->resource[3]),
- IPWIRELESS_PCCARD_NAME);
-
- return 0;
-
-exit3:
-exit2:
- if (ipw->common_memory) {
- release_mem_region(p_dev->resource[2]->start,
- resource_size(p_dev->resource[2]));
- iounmap(ipw->common_memory);
- }
-exit1:
- release_resource(io_resource);
- pcmcia_disable_device(p_dev);
- return -1;
-}
-
-static int config_ipwireless(struct ipw_dev *ipw)
-{
- struct pcmcia_device *link = ipw->link;
- int ret = 0;
-
- ipw->is_v2_card = 0;
- link->config_flags |= CONF_AUTO_SET_IO | CONF_AUTO_SET_IOMEM |
- CONF_ENABLE_IRQ;
-
- ret = pcmcia_loop_config(link, ipwireless_probe, ipw);
- if (ret != 0)
- return ret;
-
- INIT_WORK(&ipw->work_reboot, signalled_reboot_work);
-
- ipwireless_init_hardware_v1(ipw->hardware, link->resource[0]->start,
- ipw->attr_memory, ipw->common_memory,
- ipw->is_v2_card, signalled_reboot_callback,
- ipw);
-
- ret = pcmcia_request_irq(link, ipwireless_interrupt);
- if (ret != 0)
- goto exit;
-
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME ": Card type %s\n",
- ipw->is_v2_card ? "V2/V3" : "V1");
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": I/O ports %pR, irq %d\n", link->resource[0],
- (unsigned int) link->irq);
- if (ipw->attr_memory && ipw->common_memory)
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": attr memory %pR, common memory %pR\n",
- link->resource[3],
- link->resource[2]);
-
- ipw->network = ipwireless_network_create(ipw->hardware);
- if (!ipw->network)
- goto exit;
-
- ipw->tty = ipwireless_tty_create(ipw->hardware, ipw->network);
- if (!ipw->tty)
- goto exit;
-
- ipwireless_init_hardware_v2_v3(ipw->hardware);
-
- /*
- * Do the RequestConfiguration last, because it enables interrupts.
- * Then we don't get any interrupts before we're ready for them.
- */
- ret = pcmcia_enable_device(link);
- if (ret != 0)
- goto exit;
-
- return 0;
-
-exit:
- if (ipw->common_memory) {
- release_mem_region(link->resource[2]->start,
- resource_size(link->resource[2]));
- iounmap(ipw->common_memory);
- }
- if (ipw->attr_memory) {
- release_mem_region(link->resource[3]->start,
- resource_size(link->resource[3]));
- iounmap(ipw->attr_memory);
- }
- pcmcia_disable_device(link);
- return -1;
-}
-
-static void release_ipwireless(struct ipw_dev *ipw)
-{
- if (ipw->common_memory) {
- release_mem_region(ipw->link->resource[2]->start,
- resource_size(ipw->link->resource[2]));
- iounmap(ipw->common_memory);
- }
- if (ipw->attr_memory) {
- release_mem_region(ipw->link->resource[3]->start,
- resource_size(ipw->link->resource[3]));
- iounmap(ipw->attr_memory);
- }
- pcmcia_disable_device(ipw->link);
-}
-
-/*
- * ipwireless_attach() creates an "instance" of the driver, allocating
- * local data structures for one device (one interface). The device
- * is registered with Card Services.
- *
- * The pcmcia_device structure is initialized, but we don't actually
- * configure the card at this point -- we wait until we receive a
- * card insertion event.
- */
-static int ipwireless_attach(struct pcmcia_device *link)
-{
- struct ipw_dev *ipw;
- int ret;
-
- ipw = kzalloc(sizeof(struct ipw_dev), GFP_KERNEL);
- if (!ipw)
- return -ENOMEM;
-
- ipw->link = link;
- link->priv = ipw;
-
- ipw->hardware = ipwireless_hardware_create();
- if (!ipw->hardware) {
- kfree(ipw);
- return -ENOMEM;
- }
- /* RegisterClient will call config_ipwireless */
-
- ret = config_ipwireless(ipw);
-
- if (ret != 0) {
- ipwireless_detach(link);
- return ret;
- }
-
- return 0;
-}
-
-/*
- * This deletes a driver "instance". The device is de-registered with
- * Card Services. If it has been released, all local data structures
- * are freed. Otherwise, the structures will be freed when the device
- * is released.
- */
-static void ipwireless_detach(struct pcmcia_device *link)
-{
- struct ipw_dev *ipw = link->priv;
-
- release_ipwireless(ipw);
-
- if (ipw->tty != NULL)
- ipwireless_tty_free(ipw->tty);
- if (ipw->network != NULL)
- ipwireless_network_free(ipw->network);
- if (ipw->hardware != NULL)
- ipwireless_hardware_free(ipw->hardware);
- kfree(ipw);
-}
-
-static struct pcmcia_driver me = {
- .owner = THIS_MODULE,
- .probe = ipwireless_attach,
- .remove = ipwireless_detach,
- .name = IPWIRELESS_PCCARD_NAME,
- .id_table = ipw_ids
-};
-
-/*
- * Module insertion : initialisation of the module.
- * Register the card with cardmgr...
- */
-static int __init init_ipwireless(void)
-{
- int ret;
-
- ret = ipwireless_tty_init();
- if (ret != 0)
- return ret;
-
- ret = pcmcia_register_driver(&me);
- if (ret != 0)
- ipwireless_tty_release();
-
- return ret;
-}
-
-/*
- * Module removal
- */
-static void __exit exit_ipwireless(void)
-{
- pcmcia_unregister_driver(&me);
- ipwireless_tty_release();
-}
-
-module_init(init_ipwireless);
-module_exit(exit_ipwireless);
-
-MODULE_AUTHOR(IPWIRELESS_PCMCIA_AUTHOR);
-MODULE_DESCRIPTION(IPWIRELESS_PCCARD_NAME " " IPWIRELESS_PCMCIA_VERSION);
-MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * IPWireless 3G PCMCIA Network Driver
- *
- * Original code
- * by Stephen Blackheath <stephen@blacksapphire.com>,
- * Ben Martel <benm@symmetric.co.nz>
- *
- * Copyrighted as follows:
- * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
- *
- * Various driver changes and rewrites, port to new kernels
- * Copyright (C) 2006-2007 Jiri Kosina
- *
- * Misc code cleanups and updates
- * Copyright (C) 2007 David Sterba
- */
-
-#ifndef _IPWIRELESS_CS_H_
-#define _IPWIRELESS_CS_H_
-
-#include <linux/sched.h>
-#include <linux/types.h>
-
-#include <pcmcia/cistpl.h>
-#include <pcmcia/ds.h>
-
-#include "hardware.h"
-
-#define IPWIRELESS_PCCARD_NAME "ipwireless"
-#define IPWIRELESS_PCMCIA_VERSION "1.1"
-#define IPWIRELESS_PCMCIA_AUTHOR \
- "Stephen Blackheath, Ben Martel, Jiri Kosina and David Sterba"
-
-#define IPWIRELESS_TX_QUEUE_SIZE 262144
-#define IPWIRELESS_RX_QUEUE_SIZE 262144
-
-#define IPWIRELESS_STATE_DEBUG
-
-struct ipw_hardware;
-struct ipw_network;
-struct ipw_tty;
-
-struct ipw_dev {
- struct pcmcia_device *link;
- int is_v2_card;
-
- void __iomem *attr_memory;
-
- void __iomem *common_memory;
-
- /* Reference to attribute memory, containing CIS data */
- void *attribute_memory;
-
- /* Hardware context */
- struct ipw_hardware *hardware;
- /* Network layer context */
- struct ipw_network *network;
- /* TTY device context */
- struct ipw_tty *tty;
- struct work_struct work_reboot;
-};
-
-/* Module parametres */
-extern int ipwireless_debug;
-extern int ipwireless_loopback;
-extern int ipwireless_out_queue;
-
-#endif
+++ /dev/null
-/*
- * IPWireless 3G PCMCIA Network Driver
- *
- * Original code
- * by Stephen Blackheath <stephen@blacksapphire.com>,
- * Ben Martel <benm@symmetric.co.nz>
- *
- * Copyrighted as follows:
- * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
- *
- * Various driver changes and rewrites, port to new kernels
- * Copyright (C) 2006-2007 Jiri Kosina
- *
- * Misc code cleanups and updates
- * Copyright (C) 2007 David Sterba
- */
-
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/mutex.h>
-#include <linux/netdevice.h>
-#include <linux/ppp_channel.h>
-#include <linux/ppp_defs.h>
-#include <linux/slab.h>
-#include <linux/if_ppp.h>
-#include <linux/skbuff.h>
-
-#include "network.h"
-#include "hardware.h"
-#include "main.h"
-#include "tty.h"
-
-#define MAX_ASSOCIATED_TTYS 2
-
-#define SC_RCV_BITS (SC_RCV_B7_1|SC_RCV_B7_0|SC_RCV_ODDP|SC_RCV_EVNP)
-
-struct ipw_network {
- /* Hardware context, used for calls to hardware layer. */
- struct ipw_hardware *hardware;
- /* Context for kernel 'generic_ppp' functionality */
- struct ppp_channel *ppp_channel;
- /* tty context connected with IPW console */
- struct ipw_tty *associated_ttys[NO_OF_IPW_CHANNELS][MAX_ASSOCIATED_TTYS];
- /* True if ppp needs waking up once we're ready to xmit */
- int ppp_blocked;
- /* Number of packets queued up in hardware module. */
- int outgoing_packets_queued;
- /* Spinlock to avoid interrupts during shutdown */
- spinlock_t lock;
- struct mutex close_lock;
-
- /* PPP ioctl data, not actually used anywere */
- unsigned int flags;
- unsigned int rbits;
- u32 xaccm[8];
- u32 raccm;
- int mru;
-
- int shutting_down;
- unsigned int ras_control_lines;
-
- struct work_struct work_go_online;
- struct work_struct work_go_offline;
-};
-
-static void notify_packet_sent(void *callback_data, unsigned int packet_length)
-{
- struct ipw_network *network = callback_data;
- unsigned long flags;
-
- spin_lock_irqsave(&network->lock, flags);
- network->outgoing_packets_queued--;
- if (network->ppp_channel != NULL) {
- if (network->ppp_blocked) {
- network->ppp_blocked = 0;
- spin_unlock_irqrestore(&network->lock, flags);
- ppp_output_wakeup(network->ppp_channel);
- if (ipwireless_debug)
- printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
- ": ppp unblocked\n");
- } else
- spin_unlock_irqrestore(&network->lock, flags);
- } else
- spin_unlock_irqrestore(&network->lock, flags);
-}
-
-/*
- * Called by the ppp system when it has a packet to send to the hardware.
- */
-static int ipwireless_ppp_start_xmit(struct ppp_channel *ppp_channel,
- struct sk_buff *skb)
-{
- struct ipw_network *network = ppp_channel->private;
- unsigned long flags;
-
- spin_lock_irqsave(&network->lock, flags);
- if (network->outgoing_packets_queued < ipwireless_out_queue) {
- unsigned char *buf;
- static unsigned char header[] = {
- PPP_ALLSTATIONS, /* 0xff */
- PPP_UI, /* 0x03 */
- };
- int ret;
-
- network->outgoing_packets_queued++;
- spin_unlock_irqrestore(&network->lock, flags);
-
- /*
- * If we have the requested amount of headroom in the skb we
- * were handed, then we can add the header efficiently.
- */
- if (skb_headroom(skb) >= 2) {
- memcpy(skb_push(skb, 2), header, 2);
- ret = ipwireless_send_packet(network->hardware,
- IPW_CHANNEL_RAS, skb->data,
- skb->len,
- notify_packet_sent,
- network);
- if (ret == -1) {
- skb_pull(skb, 2);
- return 0;
- }
- } else {
- /* Otherwise (rarely) we do it inefficiently. */
- buf = kmalloc(skb->len + 2, GFP_ATOMIC);
- if (!buf)
- return 0;
- memcpy(buf + 2, skb->data, skb->len);
- memcpy(buf, header, 2);
- ret = ipwireless_send_packet(network->hardware,
- IPW_CHANNEL_RAS, buf,
- skb->len + 2,
- notify_packet_sent,
- network);
- kfree(buf);
- if (ret == -1)
- return 0;
- }
- kfree_skb(skb);
- return 1;
- } else {
- /*
- * Otherwise reject the packet, and flag that the ppp system
- * needs to be unblocked once we are ready to send.
- */
- network->ppp_blocked = 1;
- spin_unlock_irqrestore(&network->lock, flags);
- if (ipwireless_debug)
- printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME ": ppp blocked\n");
- return 0;
- }
-}
-
-/* Handle an ioctl call that has come in via ppp. (copy of ppp_async_ioctl() */
-static int ipwireless_ppp_ioctl(struct ppp_channel *ppp_channel,
- unsigned int cmd, unsigned long arg)
-{
- struct ipw_network *network = ppp_channel->private;
- int err, val;
- u32 accm[8];
- int __user *user_arg = (int __user *) arg;
-
- err = -EFAULT;
- switch (cmd) {
- case PPPIOCGFLAGS:
- val = network->flags | network->rbits;
- if (put_user(val, user_arg))
- break;
- err = 0;
- break;
-
- case PPPIOCSFLAGS:
- if (get_user(val, user_arg))
- break;
- network->flags = val & ~SC_RCV_BITS;
- network->rbits = val & SC_RCV_BITS;
- err = 0;
- break;
-
- case PPPIOCGASYNCMAP:
- if (put_user(network->xaccm[0], user_arg))
- break;
- err = 0;
- break;
-
- case PPPIOCSASYNCMAP:
- if (get_user(network->xaccm[0], user_arg))
- break;
- err = 0;
- break;
-
- case PPPIOCGRASYNCMAP:
- if (put_user(network->raccm, user_arg))
- break;
- err = 0;
- break;
-
- case PPPIOCSRASYNCMAP:
- if (get_user(network->raccm, user_arg))
- break;
- err = 0;
- break;
-
- case PPPIOCGXASYNCMAP:
- if (copy_to_user((void __user *) arg, network->xaccm,
- sizeof(network->xaccm)))
- break;
- err = 0;
- break;
-
- case PPPIOCSXASYNCMAP:
- if (copy_from_user(accm, (void __user *) arg, sizeof(accm)))
- break;
- accm[2] &= ~0x40000000U; /* can't escape 0x5e */
- accm[3] |= 0x60000000U; /* must escape 0x7d, 0x7e */
- memcpy(network->xaccm, accm, sizeof(network->xaccm));
- err = 0;
- break;
-
- case PPPIOCGMRU:
- if (put_user(network->mru, user_arg))
- break;
- err = 0;
- break;
-
- case PPPIOCSMRU:
- if (get_user(val, user_arg))
- break;
- if (val < PPP_MRU)
- val = PPP_MRU;
- network->mru = val;
- err = 0;
- break;
-
- default:
- err = -ENOTTY;
- }
-
- return err;
-}
-
-static const struct ppp_channel_ops ipwireless_ppp_channel_ops = {
- .start_xmit = ipwireless_ppp_start_xmit,
- .ioctl = ipwireless_ppp_ioctl
-};
-
-static void do_go_online(struct work_struct *work_go_online)
-{
- struct ipw_network *network =
- container_of(work_go_online, struct ipw_network,
- work_go_online);
- unsigned long flags;
-
- spin_lock_irqsave(&network->lock, flags);
- if (!network->ppp_channel) {
- struct ppp_channel *channel;
-
- spin_unlock_irqrestore(&network->lock, flags);
- channel = kzalloc(sizeof(struct ppp_channel), GFP_KERNEL);
- if (!channel) {
- printk(KERN_ERR IPWIRELESS_PCCARD_NAME
- ": unable to allocate PPP channel\n");
- return;
- }
- channel->private = network;
- channel->mtu = 16384; /* Wild guess */
- channel->hdrlen = 2;
- channel->ops = &ipwireless_ppp_channel_ops;
-
- network->flags = 0;
- network->rbits = 0;
- network->mru = PPP_MRU;
- memset(network->xaccm, 0, sizeof(network->xaccm));
- network->xaccm[0] = ~0U;
- network->xaccm[3] = 0x60000000U;
- network->raccm = ~0U;
- ppp_register_channel(channel);
- spin_lock_irqsave(&network->lock, flags);
- network->ppp_channel = channel;
- }
- spin_unlock_irqrestore(&network->lock, flags);
-}
-
-static void do_go_offline(struct work_struct *work_go_offline)
-{
- struct ipw_network *network =
- container_of(work_go_offline, struct ipw_network,
- work_go_offline);
- unsigned long flags;
-
- mutex_lock(&network->close_lock);
- spin_lock_irqsave(&network->lock, flags);
- if (network->ppp_channel != NULL) {
- struct ppp_channel *channel = network->ppp_channel;
-
- network->ppp_channel = NULL;
- spin_unlock_irqrestore(&network->lock, flags);
- mutex_unlock(&network->close_lock);
- ppp_unregister_channel(channel);
- } else {
- spin_unlock_irqrestore(&network->lock, flags);
- mutex_unlock(&network->close_lock);
- }
-}
-
-void ipwireless_network_notify_control_line_change(struct ipw_network *network,
- unsigned int channel_idx,
- unsigned int control_lines,
- unsigned int changed_mask)
-{
- int i;
-
- if (channel_idx == IPW_CHANNEL_RAS)
- network->ras_control_lines = control_lines;
-
- for (i = 0; i < MAX_ASSOCIATED_TTYS; i++) {
- struct ipw_tty *tty =
- network->associated_ttys[channel_idx][i];
-
- /*
- * If it's associated with a tty (other than the RAS channel
- * when we're online), then send the data to that tty. The RAS
- * channel's data is handled above - it always goes through
- * ppp_generic.
- */
- if (tty)
- ipwireless_tty_notify_control_line_change(tty,
- channel_idx,
- control_lines,
- changed_mask);
- }
-}
-
-/*
- * Some versions of firmware stuff packets with 0xff 0x03 (PPP: ALLSTATIONS, UI)
- * bytes, which are required on sent packet, but not always present on received
- * packets
- */
-static struct sk_buff *ipw_packet_received_skb(unsigned char *data,
- unsigned int length)
-{
- struct sk_buff *skb;
-
- if (length > 2 && data[0] == PPP_ALLSTATIONS && data[1] == PPP_UI) {
- length -= 2;
- data += 2;
- }
-
- skb = dev_alloc_skb(length + 4);
- skb_reserve(skb, 2);
- memcpy(skb_put(skb, length), data, length);
-
- return skb;
-}
-
-void ipwireless_network_packet_received(struct ipw_network *network,
- unsigned int channel_idx,
- unsigned char *data,
- unsigned int length)
-{
- int i;
- unsigned long flags;
-
- for (i = 0; i < MAX_ASSOCIATED_TTYS; i++) {
- struct ipw_tty *tty = network->associated_ttys[channel_idx][i];
-
- if (!tty)
- continue;
-
- /*
- * If it's associated with a tty (other than the RAS channel
- * when we're online), then send the data to that tty. The RAS
- * channel's data is handled above - it always goes through
- * ppp_generic.
- */
- if (channel_idx == IPW_CHANNEL_RAS
- && (network->ras_control_lines &
- IPW_CONTROL_LINE_DCD) != 0
- && ipwireless_tty_is_modem(tty)) {
- /*
- * If data came in on the RAS channel and this tty is
- * the modem tty, and we are online, then we send it to
- * the PPP layer.
- */
- mutex_lock(&network->close_lock);
- spin_lock_irqsave(&network->lock, flags);
- if (network->ppp_channel != NULL) {
- struct sk_buff *skb;
-
- spin_unlock_irqrestore(&network->lock,
- flags);
-
- /* Send the data to the ppp_generic module. */
- skb = ipw_packet_received_skb(data, length);
- ppp_input(network->ppp_channel, skb);
- } else
- spin_unlock_irqrestore(&network->lock,
- flags);
- mutex_unlock(&network->close_lock);
- }
- /* Otherwise we send it out the tty. */
- else
- ipwireless_tty_received(tty, data, length);
- }
-}
-
-struct ipw_network *ipwireless_network_create(struct ipw_hardware *hw)
-{
- struct ipw_network *network =
- kzalloc(sizeof(struct ipw_network), GFP_ATOMIC);
-
- if (!network)
- return NULL;
-
- spin_lock_init(&network->lock);
- mutex_init(&network->close_lock);
-
- network->hardware = hw;
-
- INIT_WORK(&network->work_go_online, do_go_online);
- INIT_WORK(&network->work_go_offline, do_go_offline);
-
- ipwireless_associate_network(hw, network);
-
- return network;
-}
-
-void ipwireless_network_free(struct ipw_network *network)
-{
- network->shutting_down = 1;
-
- ipwireless_ppp_close(network);
- flush_work_sync(&network->work_go_online);
- flush_work_sync(&network->work_go_offline);
-
- ipwireless_stop_interrupts(network->hardware);
- ipwireless_associate_network(network->hardware, NULL);
-
- kfree(network);
-}
-
-void ipwireless_associate_network_tty(struct ipw_network *network,
- unsigned int channel_idx,
- struct ipw_tty *tty)
-{
- int i;
-
- for (i = 0; i < MAX_ASSOCIATED_TTYS; i++)
- if (network->associated_ttys[channel_idx][i] == NULL) {
- network->associated_ttys[channel_idx][i] = tty;
- break;
- }
-}
-
-void ipwireless_disassociate_network_ttys(struct ipw_network *network,
- unsigned int channel_idx)
-{
- int i;
-
- for (i = 0; i < MAX_ASSOCIATED_TTYS; i++)
- network->associated_ttys[channel_idx][i] = NULL;
-}
-
-void ipwireless_ppp_open(struct ipw_network *network)
-{
- if (ipwireless_debug)
- printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME ": online\n");
- schedule_work(&network->work_go_online);
-}
-
-void ipwireless_ppp_close(struct ipw_network *network)
-{
- /* Disconnect from the wireless network. */
- if (ipwireless_debug)
- printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME ": offline\n");
- schedule_work(&network->work_go_offline);
-}
-
-int ipwireless_ppp_channel_index(struct ipw_network *network)
-{
- int ret = -1;
- unsigned long flags;
-
- spin_lock_irqsave(&network->lock, flags);
- if (network->ppp_channel != NULL)
- ret = ppp_channel_index(network->ppp_channel);
- spin_unlock_irqrestore(&network->lock, flags);
-
- return ret;
-}
-
-int ipwireless_ppp_unit_number(struct ipw_network *network)
-{
- int ret = -1;
- unsigned long flags;
-
- spin_lock_irqsave(&network->lock, flags);
- if (network->ppp_channel != NULL)
- ret = ppp_unit_number(network->ppp_channel);
- spin_unlock_irqrestore(&network->lock, flags);
-
- return ret;
-}
-
-int ipwireless_ppp_mru(const struct ipw_network *network)
-{
- return network->mru;
-}
+++ /dev/null
-/*
- * IPWireless 3G PCMCIA Network Driver
- *
- * Original code
- * by Stephen Blackheath <stephen@blacksapphire.com>,
- * Ben Martel <benm@symmetric.co.nz>
- *
- * Copyrighted as follows:
- * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
- *
- * Various driver changes and rewrites, port to new kernels
- * Copyright (C) 2006-2007 Jiri Kosina
- *
- * Misc code cleanups and updates
- * Copyright (C) 2007 David Sterba
- */
-
-#ifndef _IPWIRELESS_CS_NETWORK_H_
-#define _IPWIRELESS_CS_NETWORK_H_
-
-#include <linux/types.h>
-
-struct ipw_network;
-struct ipw_tty;
-struct ipw_hardware;
-
-/* Definitions of the different channels on the PCMCIA UE */
-#define IPW_CHANNEL_RAS 0
-#define IPW_CHANNEL_DIALLER 1
-#define IPW_CHANNEL_CONSOLE 2
-#define NO_OF_IPW_CHANNELS 5
-
-void ipwireless_network_notify_control_line_change(struct ipw_network *net,
- unsigned int channel_idx, unsigned int control_lines,
- unsigned int control_mask);
-void ipwireless_network_packet_received(struct ipw_network *net,
- unsigned int channel_idx, unsigned char *data,
- unsigned int length);
-struct ipw_network *ipwireless_network_create(struct ipw_hardware *hw);
-void ipwireless_network_free(struct ipw_network *net);
-void ipwireless_associate_network_tty(struct ipw_network *net,
- unsigned int channel_idx, struct ipw_tty *tty);
-void ipwireless_disassociate_network_ttys(struct ipw_network *net,
- unsigned int channel_idx);
-
-void ipwireless_ppp_open(struct ipw_network *net);
-
-void ipwireless_ppp_close(struct ipw_network *net);
-int ipwireless_ppp_channel_index(struct ipw_network *net);
-int ipwireless_ppp_unit_number(struct ipw_network *net);
-int ipwireless_ppp_mru(const struct ipw_network *net);
-
-#endif
+++ /dev/null
-/*
- * IPWireless 3G PCMCIA Network Driver
- *
- * Original code
- * by Stephen Blackheath <stephen@blacksapphire.com>,
- * Ben Martel <benm@symmetric.co.nz>
- *
- * Copyrighted as follows:
- * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
- *
- * Various driver changes and rewrites, port to new kernels
- * Copyright (C) 2006-2007 Jiri Kosina
- *
- * Misc code cleanups and updates
- * Copyright (C) 2007 David Sterba
- */
-
-#ifndef _IPWIRELESS_CS_SETUP_PROTOCOL_H_
-#define _IPWIRELESS_CS_SETUP_PROTOCOL_H_
-
-/* Version of the setup protocol and transport protocols */
-#define TL_SETUP_VERSION 1
-
-#define TL_SETUP_VERSION_QRY_TMO 1000
-#define TL_SETUP_MAX_VERSION_QRY 30
-
-/* Message numbers 0-9 are obsoleted and must not be reused! */
-#define TL_SETUP_SIGNO_GET_VERSION_QRY 10
-#define TL_SETUP_SIGNO_GET_VERSION_RSP 11
-#define TL_SETUP_SIGNO_CONFIG_MSG 12
-#define TL_SETUP_SIGNO_CONFIG_DONE_MSG 13
-#define TL_SETUP_SIGNO_OPEN_MSG 14
-#define TL_SETUP_SIGNO_CLOSE_MSG 15
-
-#define TL_SETUP_SIGNO_INFO_MSG 20
-#define TL_SETUP_SIGNO_INFO_MSG_ACK 21
-
-#define TL_SETUP_SIGNO_REBOOT_MSG 22
-#define TL_SETUP_SIGNO_REBOOT_MSG_ACK 23
-
-/* Synchronous start-messages */
-struct tl_setup_get_version_qry {
- unsigned char sig_no; /* TL_SETUP_SIGNO_GET_VERSION_QRY */
-} __attribute__ ((__packed__));
-
-struct tl_setup_get_version_rsp {
- unsigned char sig_no; /* TL_SETUP_SIGNO_GET_VERSION_RSP */
- unsigned char version; /* TL_SETUP_VERSION */
-} __attribute__ ((__packed__));
-
-struct tl_setup_config_msg {
- unsigned char sig_no; /* TL_SETUP_SIGNO_CONFIG_MSG */
- unsigned char port_no;
- unsigned char prio_data;
- unsigned char prio_ctrl;
-} __attribute__ ((__packed__));
-
-struct tl_setup_config_done_msg {
- unsigned char sig_no; /* TL_SETUP_SIGNO_CONFIG_DONE_MSG */
-} __attribute__ ((__packed__));
-
-/* Asyncronous messages */
-struct tl_setup_open_msg {
- unsigned char sig_no; /* TL_SETUP_SIGNO_OPEN_MSG */
- unsigned char port_no;
-} __attribute__ ((__packed__));
-
-struct tl_setup_close_msg {
- unsigned char sig_no; /* TL_SETUP_SIGNO_CLOSE_MSG */
- unsigned char port_no;
-} __attribute__ ((__packed__));
-
-/* Driver type - for use in tl_setup_info_msg.driver_type */
-#define COMM_DRIVER 0
-#define NDISWAN_DRIVER 1
-#define NDISWAN_DRIVER_MAJOR_VERSION 2
-#define NDISWAN_DRIVER_MINOR_VERSION 0
-
-/*
- * It should not matter when this message comes over as we just store the
- * results and send the ACK.
- */
-struct tl_setup_info_msg {
- unsigned char sig_no; /* TL_SETUP_SIGNO_INFO_MSG */
- unsigned char driver_type;
- unsigned char major_version;
- unsigned char minor_version;
-} __attribute__ ((__packed__));
-
-struct tl_setup_info_msgAck {
- unsigned char sig_no; /* TL_SETUP_SIGNO_INFO_MSG_ACK */
-} __attribute__ ((__packed__));
-
-struct TlSetupRebootMsgAck {
- unsigned char sig_no; /* TL_SETUP_SIGNO_REBOOT_MSG_ACK */
-} __attribute__ ((__packed__));
-
-/* Define a union of all the msgs that the driver can receive from the card.*/
-union ipw_setup_rx_msg {
- unsigned char sig_no;
- struct tl_setup_get_version_rsp version_rsp_msg;
- struct tl_setup_open_msg open_msg;
- struct tl_setup_close_msg close_msg;
- struct tl_setup_info_msg InfoMsg;
- struct tl_setup_info_msgAck info_msg_ack;
-} __attribute__ ((__packed__));
-
-#endif /* _IPWIRELESS_CS_SETUP_PROTOCOL_H_ */
+++ /dev/null
-/*
- * IPWireless 3G PCMCIA Network Driver
- *
- * Original code
- * by Stephen Blackheath <stephen@blacksapphire.com>,
- * Ben Martel <benm@symmetric.co.nz>
- *
- * Copyrighted as follows:
- * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
- *
- * Various driver changes and rewrites, port to new kernels
- * Copyright (C) 2006-2007 Jiri Kosina
- *
- * Misc code cleanups and updates
- * Copyright (C) 2007 David Sterba
- */
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/ppp_defs.h>
-#include <linux/if.h>
-#include <linux/if_ppp.h>
-#include <linux/sched.h>
-#include <linux/serial.h>
-#include <linux/slab.h>
-#include <linux/tty.h>
-#include <linux/tty_driver.h>
-#include <linux/tty_flip.h>
-#include <linux/uaccess.h>
-
-#include "tty.h"
-#include "network.h"
-#include "hardware.h"
-#include "main.h"
-
-#define IPWIRELESS_PCMCIA_START (0)
-#define IPWIRELESS_PCMCIA_MINORS (24)
-#define IPWIRELESS_PCMCIA_MINOR_RANGE (8)
-
-#define TTYTYPE_MODEM (0)
-#define TTYTYPE_MONITOR (1)
-#define TTYTYPE_RAS_RAW (2)
-
-struct ipw_tty {
- int index;
- struct ipw_hardware *hardware;
- unsigned int channel_idx;
- unsigned int secondary_channel_idx;
- int tty_type;
- struct ipw_network *network;
- struct tty_struct *linux_tty;
- int open_count;
- unsigned int control_lines;
- struct mutex ipw_tty_mutex;
- int tx_bytes_queued;
- int closing;
-};
-
-static struct ipw_tty *ttys[IPWIRELESS_PCMCIA_MINORS];
-
-static struct tty_driver *ipw_tty_driver;
-
-static char *tty_type_name(int tty_type)
-{
- static char *channel_names[] = {
- "modem",
- "monitor",
- "RAS-raw"
- };
-
- return channel_names[tty_type];
-}
-
-static void report_registering(struct ipw_tty *tty)
-{
- char *iftype = tty_type_name(tty->tty_type);
-
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": registering %s device ttyIPWp%d\n", iftype, tty->index);
-}
-
-static void report_deregistering(struct ipw_tty *tty)
-{
- char *iftype = tty_type_name(tty->tty_type);
-
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": deregistering %s device ttyIPWp%d\n", iftype,
- tty->index);
-}
-
-static struct ipw_tty *get_tty(int minor)
-{
- if (minor < ipw_tty_driver->minor_start
- || minor >= ipw_tty_driver->minor_start +
- IPWIRELESS_PCMCIA_MINORS)
- return NULL;
- else {
- int minor_offset = minor - ipw_tty_driver->minor_start;
-
- /*
- * The 'ras_raw' channel is only available when 'loopback' mode
- * is enabled.
- * Number of minor starts with 16 (_RANGE * _RAS_RAW).
- */
- if (!ipwireless_loopback &&
- minor_offset >=
- IPWIRELESS_PCMCIA_MINOR_RANGE * TTYTYPE_RAS_RAW)
- return NULL;
-
- return ttys[minor_offset];
- }
-}
-
-static int ipw_open(struct tty_struct *linux_tty, struct file *filp)
-{
- int minor = linux_tty->index;
- struct ipw_tty *tty = get_tty(minor);
-
- if (!tty)
- return -ENODEV;
-
- mutex_lock(&tty->ipw_tty_mutex);
-
- if (tty->closing) {
- mutex_unlock(&tty->ipw_tty_mutex);
- return -ENODEV;
- }
- if (tty->open_count == 0)
- tty->tx_bytes_queued = 0;
-
- tty->open_count++;
-
- tty->linux_tty = linux_tty;
- linux_tty->driver_data = tty;
- linux_tty->low_latency = 1;
-
- if (tty->tty_type == TTYTYPE_MODEM)
- ipwireless_ppp_open(tty->network);
-
- mutex_unlock(&tty->ipw_tty_mutex);
-
- return 0;
-}
-
-static void do_ipw_close(struct ipw_tty *tty)
-{
- tty->open_count--;
-
- if (tty->open_count == 0) {
- struct tty_struct *linux_tty = tty->linux_tty;
-
- if (linux_tty != NULL) {
- tty->linux_tty = NULL;
- linux_tty->driver_data = NULL;
-
- if (tty->tty_type == TTYTYPE_MODEM)
- ipwireless_ppp_close(tty->network);
- }
- }
-}
-
-static void ipw_hangup(struct tty_struct *linux_tty)
-{
- struct ipw_tty *tty = linux_tty->driver_data;
-
- if (!tty)
- return;
-
- mutex_lock(&tty->ipw_tty_mutex);
- if (tty->open_count == 0) {
- mutex_unlock(&tty->ipw_tty_mutex);
- return;
- }
-
- do_ipw_close(tty);
-
- mutex_unlock(&tty->ipw_tty_mutex);
-}
-
-static void ipw_close(struct tty_struct *linux_tty, struct file *filp)
-{
- ipw_hangup(linux_tty);
-}
-
-/* Take data received from hardware, and send it out the tty */
-void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data,
- unsigned int length)
-{
- struct tty_struct *linux_tty;
- int work = 0;
-
- mutex_lock(&tty->ipw_tty_mutex);
- linux_tty = tty->linux_tty;
- if (linux_tty == NULL) {
- mutex_unlock(&tty->ipw_tty_mutex);
- return;
- }
-
- if (!tty->open_count) {
- mutex_unlock(&tty->ipw_tty_mutex);
- return;
- }
- mutex_unlock(&tty->ipw_tty_mutex);
-
- work = tty_insert_flip_string(linux_tty, data, length);
-
- if (work != length)
- printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
- ": %d chars not inserted to flip buffer!\n",
- length - work);
-
- /*
- * This may sleep if ->low_latency is set
- */
- if (work)
- tty_flip_buffer_push(linux_tty);
-}
-
-static void ipw_write_packet_sent_callback(void *callback_data,
- unsigned int packet_length)
-{
- struct ipw_tty *tty = callback_data;
-
- /*
- * Packet has been sent, so we subtract the number of bytes from our
- * tally of outstanding TX bytes.
- */
- tty->tx_bytes_queued -= packet_length;
-}
-
-static int ipw_write(struct tty_struct *linux_tty,
- const unsigned char *buf, int count)
-{
- struct ipw_tty *tty = linux_tty->driver_data;
- int room, ret;
-
- if (!tty)
- return -ENODEV;
-
- mutex_lock(&tty->ipw_tty_mutex);
- if (!tty->open_count) {
- mutex_unlock(&tty->ipw_tty_mutex);
- return -EINVAL;
- }
-
- room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued;
- if (room < 0)
- room = 0;
- /* Don't allow caller to write any more than we have room for */
- if (count > room)
- count = room;
-
- if (count == 0) {
- mutex_unlock(&tty->ipw_tty_mutex);
- return 0;
- }
-
- ret = ipwireless_send_packet(tty->hardware, IPW_CHANNEL_RAS,
- buf, count,
- ipw_write_packet_sent_callback, tty);
- if (ret == -1) {
- mutex_unlock(&tty->ipw_tty_mutex);
- return 0;
- }
-
- tty->tx_bytes_queued += count;
- mutex_unlock(&tty->ipw_tty_mutex);
-
- return count;
-}
-
-static int ipw_write_room(struct tty_struct *linux_tty)
-{
- struct ipw_tty *tty = linux_tty->driver_data;
- int room;
-
- /* FIXME: Exactly how is the tty object locked here .. */
- if (!tty)
- return -ENODEV;
-
- if (!tty->open_count)
- return -EINVAL;
-
- room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued;
- if (room < 0)
- room = 0;
-
- return room;
-}
-
-static int ipwireless_get_serial_info(struct ipw_tty *tty,
- struct serial_struct __user *retinfo)
-{
- struct serial_struct tmp;
-
- if (!retinfo)
- return (-EFAULT);
-
- memset(&tmp, 0, sizeof(tmp));
- tmp.type = PORT_UNKNOWN;
- tmp.line = tty->index;
- tmp.port = 0;
- tmp.irq = 0;
- tmp.flags = 0;
- tmp.baud_base = 115200;
- tmp.close_delay = 0;
- tmp.closing_wait = 0;
- tmp.custom_divisor = 0;
- tmp.hub6 = 0;
- if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
- return -EFAULT;
-
- return 0;
-}
-
-static int ipw_chars_in_buffer(struct tty_struct *linux_tty)
-{
- struct ipw_tty *tty = linux_tty->driver_data;
-
- if (!tty)
- return 0;
-
- if (!tty->open_count)
- return 0;
-
- return tty->tx_bytes_queued;
-}
-
-static int get_control_lines(struct ipw_tty *tty)
-{
- unsigned int my = tty->control_lines;
- unsigned int out = 0;
-
- if (my & IPW_CONTROL_LINE_RTS)
- out |= TIOCM_RTS;
- if (my & IPW_CONTROL_LINE_DTR)
- out |= TIOCM_DTR;
- if (my & IPW_CONTROL_LINE_CTS)
- out |= TIOCM_CTS;
- if (my & IPW_CONTROL_LINE_DSR)
- out |= TIOCM_DSR;
- if (my & IPW_CONTROL_LINE_DCD)
- out |= TIOCM_CD;
-
- return out;
-}
-
-static int set_control_lines(struct ipw_tty *tty, unsigned int set,
- unsigned int clear)
-{
- int ret;
-
- if (set & TIOCM_RTS) {
- ret = ipwireless_set_RTS(tty->hardware, tty->channel_idx, 1);
- if (ret)
- return ret;
- if (tty->secondary_channel_idx != -1) {
- ret = ipwireless_set_RTS(tty->hardware,
- tty->secondary_channel_idx, 1);
- if (ret)
- return ret;
- }
- }
- if (set & TIOCM_DTR) {
- ret = ipwireless_set_DTR(tty->hardware, tty->channel_idx, 1);
- if (ret)
- return ret;
- if (tty->secondary_channel_idx != -1) {
- ret = ipwireless_set_DTR(tty->hardware,
- tty->secondary_channel_idx, 1);
- if (ret)
- return ret;
- }
- }
- if (clear & TIOCM_RTS) {
- ret = ipwireless_set_RTS(tty->hardware, tty->channel_idx, 0);
- if (tty->secondary_channel_idx != -1) {
- ret = ipwireless_set_RTS(tty->hardware,
- tty->secondary_channel_idx, 0);
- if (ret)
- return ret;
- }
- }
- if (clear & TIOCM_DTR) {
- ret = ipwireless_set_DTR(tty->hardware, tty->channel_idx, 0);
- if (tty->secondary_channel_idx != -1) {
- ret = ipwireless_set_DTR(tty->hardware,
- tty->secondary_channel_idx, 0);
- if (ret)
- return ret;
- }
- }
- return 0;
-}
-
-static int ipw_tiocmget(struct tty_struct *linux_tty)
-{
- struct ipw_tty *tty = linux_tty->driver_data;
- /* FIXME: Exactly how is the tty object locked here .. */
-
- if (!tty)
- return -ENODEV;
-
- if (!tty->open_count)
- return -EINVAL;
-
- return get_control_lines(tty);
-}
-
-static int
-ipw_tiocmset(struct tty_struct *linux_tty,
- unsigned int set, unsigned int clear)
-{
- struct ipw_tty *tty = linux_tty->driver_data;
- /* FIXME: Exactly how is the tty object locked here .. */
-
- if (!tty)
- return -ENODEV;
-
- if (!tty->open_count)
- return -EINVAL;
-
- return set_control_lines(tty, set, clear);
-}
-
-static int ipw_ioctl(struct tty_struct *linux_tty,
- unsigned int cmd, unsigned long arg)
-{
- struct ipw_tty *tty = linux_tty->driver_data;
-
- if (!tty)
- return -ENODEV;
-
- if (!tty->open_count)
- return -EINVAL;
-
- /* FIXME: Exactly how is the tty object locked here .. */
-
- switch (cmd) {
- case TIOCGSERIAL:
- return ipwireless_get_serial_info(tty, (void __user *) arg);
-
- case TIOCSSERIAL:
- return 0; /* Keeps the PCMCIA scripts happy. */
- }
-
- if (tty->tty_type == TTYTYPE_MODEM) {
- switch (cmd) {
- case PPPIOCGCHAN:
- {
- int chan = ipwireless_ppp_channel_index(
- tty->network);
-
- if (chan < 0)
- return -ENODEV;
- if (put_user(chan, (int __user *) arg))
- return -EFAULT;
- }
- return 0;
-
- case PPPIOCGUNIT:
- {
- int unit = ipwireless_ppp_unit_number(
- tty->network);
-
- if (unit < 0)
- return -ENODEV;
- if (put_user(unit, (int __user *) arg))
- return -EFAULT;
- }
- return 0;
-
- case FIONREAD:
- {
- int val = 0;
-
- if (put_user(val, (int __user *) arg))
- return -EFAULT;
- }
- return 0;
- case TCFLSH:
- return tty_perform_flush(linux_tty, arg);
- }
- }
- return -ENOIOCTLCMD;
-}
-
-static int add_tty(int j,
- struct ipw_hardware *hardware,
- struct ipw_network *network, int channel_idx,
- int secondary_channel_idx, int tty_type)
-{
- ttys[j] = kzalloc(sizeof(struct ipw_tty), GFP_KERNEL);
- if (!ttys[j])
- return -ENOMEM;
- ttys[j]->index = j;
- ttys[j]->hardware = hardware;
- ttys[j]->channel_idx = channel_idx;
- ttys[j]->secondary_channel_idx = secondary_channel_idx;
- ttys[j]->network = network;
- ttys[j]->tty_type = tty_type;
- mutex_init(&ttys[j]->ipw_tty_mutex);
-
- tty_register_device(ipw_tty_driver, j, NULL);
- ipwireless_associate_network_tty(network, channel_idx, ttys[j]);
-
- if (secondary_channel_idx != -1)
- ipwireless_associate_network_tty(network,
- secondary_channel_idx,
- ttys[j]);
- if (get_tty(j + ipw_tty_driver->minor_start) == ttys[j])
- report_registering(ttys[j]);
- return 0;
-}
-
-struct ipw_tty *ipwireless_tty_create(struct ipw_hardware *hardware,
- struct ipw_network *network)
-{
- int i, j;
-
- for (i = 0; i < IPWIRELESS_PCMCIA_MINOR_RANGE; i++) {
- int allfree = 1;
-
- for (j = i; j < IPWIRELESS_PCMCIA_MINORS;
- j += IPWIRELESS_PCMCIA_MINOR_RANGE)
- if (ttys[j] != NULL) {
- allfree = 0;
- break;
- }
-
- if (allfree) {
- j = i;
-
- if (add_tty(j, hardware, network,
- IPW_CHANNEL_DIALLER, IPW_CHANNEL_RAS,
- TTYTYPE_MODEM))
- return NULL;
-
- j += IPWIRELESS_PCMCIA_MINOR_RANGE;
- if (add_tty(j, hardware, network,
- IPW_CHANNEL_DIALLER, -1,
- TTYTYPE_MONITOR))
- return NULL;
-
- j += IPWIRELESS_PCMCIA_MINOR_RANGE;
- if (add_tty(j, hardware, network,
- IPW_CHANNEL_RAS, -1,
- TTYTYPE_RAS_RAW))
- return NULL;
-
- return ttys[i];
- }
- }
- return NULL;
-}
-
-/*
- * Must be called before ipwireless_network_free().
- */
-void ipwireless_tty_free(struct ipw_tty *tty)
-{
- int j;
- struct ipw_network *network = ttys[tty->index]->network;
-
- for (j = tty->index; j < IPWIRELESS_PCMCIA_MINORS;
- j += IPWIRELESS_PCMCIA_MINOR_RANGE) {
- struct ipw_tty *ttyj = ttys[j];
-
- if (ttyj) {
- mutex_lock(&ttyj->ipw_tty_mutex);
- if (get_tty(j + ipw_tty_driver->minor_start) == ttyj)
- report_deregistering(ttyj);
- ttyj->closing = 1;
- if (ttyj->linux_tty != NULL) {
- mutex_unlock(&ttyj->ipw_tty_mutex);
- tty_hangup(ttyj->linux_tty);
- /* Wait till the tty_hangup has completed */
- flush_work_sync(&ttyj->linux_tty->hangup_work);
- /* FIXME: Exactly how is the tty object locked here
- against a parallel ioctl etc */
- mutex_lock(&ttyj->ipw_tty_mutex);
- }
- while (ttyj->open_count)
- do_ipw_close(ttyj);
- ipwireless_disassociate_network_ttys(network,
- ttyj->channel_idx);
- tty_unregister_device(ipw_tty_driver, j);
- ttys[j] = NULL;
- mutex_unlock(&ttyj->ipw_tty_mutex);
- kfree(ttyj);
- }
- }
-}
-
-static const struct tty_operations tty_ops = {
- .open = ipw_open,
- .close = ipw_close,
- .hangup = ipw_hangup,
- .write = ipw_write,
- .write_room = ipw_write_room,
- .ioctl = ipw_ioctl,
- .chars_in_buffer = ipw_chars_in_buffer,
- .tiocmget = ipw_tiocmget,
- .tiocmset = ipw_tiocmset,
-};
-
-int ipwireless_tty_init(void)
-{
- int result;
-
- ipw_tty_driver = alloc_tty_driver(IPWIRELESS_PCMCIA_MINORS);
- if (!ipw_tty_driver)
- return -ENOMEM;
-
- ipw_tty_driver->owner = THIS_MODULE;
- ipw_tty_driver->driver_name = IPWIRELESS_PCCARD_NAME;
- ipw_tty_driver->name = "ttyIPWp";
- ipw_tty_driver->major = 0;
- ipw_tty_driver->minor_start = IPWIRELESS_PCMCIA_START;
- ipw_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
- ipw_tty_driver->subtype = SERIAL_TYPE_NORMAL;
- ipw_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
- ipw_tty_driver->init_termios = tty_std_termios;
- ipw_tty_driver->init_termios.c_cflag =
- B9600 | CS8 | CREAD | HUPCL | CLOCAL;
- ipw_tty_driver->init_termios.c_ispeed = 9600;
- ipw_tty_driver->init_termios.c_ospeed = 9600;
- tty_set_operations(ipw_tty_driver, &tty_ops);
- result = tty_register_driver(ipw_tty_driver);
- if (result) {
- printk(KERN_ERR IPWIRELESS_PCCARD_NAME
- ": failed to register tty driver\n");
- put_tty_driver(ipw_tty_driver);
- return result;
- }
-
- return 0;
-}
-
-void ipwireless_tty_release(void)
-{
- int ret;
-
- ret = tty_unregister_driver(ipw_tty_driver);
- put_tty_driver(ipw_tty_driver);
- if (ret != 0)
- printk(KERN_ERR IPWIRELESS_PCCARD_NAME
- ": tty_unregister_driver failed with code %d\n", ret);
-}
-
-int ipwireless_tty_is_modem(struct ipw_tty *tty)
-{
- return tty->tty_type == TTYTYPE_MODEM;
-}
-
-void
-ipwireless_tty_notify_control_line_change(struct ipw_tty *tty,
- unsigned int channel_idx,
- unsigned int control_lines,
- unsigned int changed_mask)
-{
- unsigned int old_control_lines = tty->control_lines;
-
- tty->control_lines = (tty->control_lines & ~changed_mask)
- | (control_lines & changed_mask);
-
- /*
- * If DCD is de-asserted, we close the tty so pppd can tell that we
- * have gone offline.
- */
- if ((old_control_lines & IPW_CONTROL_LINE_DCD)
- && !(tty->control_lines & IPW_CONTROL_LINE_DCD)
- && tty->linux_tty) {
- tty_hangup(tty->linux_tty);
- }
-}
-
+++ /dev/null
-/*
- * IPWireless 3G PCMCIA Network Driver
- *
- * Original code
- * by Stephen Blackheath <stephen@blacksapphire.com>,
- * Ben Martel <benm@symmetric.co.nz>
- *
- * Copyrighted as follows:
- * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
- *
- * Various driver changes and rewrites, port to new kernels
- * Copyright (C) 2006-2007 Jiri Kosina
- *
- * Misc code cleanups and updates
- * Copyright (C) 2007 David Sterba
- */
-
-#ifndef _IPWIRELESS_CS_TTY_H_
-#define _IPWIRELESS_CS_TTY_H_
-
-#include <linux/types.h>
-#include <linux/sched.h>
-
-#include <pcmcia/cistpl.h>
-#include <pcmcia/ds.h>
-
-struct ipw_tty;
-struct ipw_network;
-struct ipw_hardware;
-
-int ipwireless_tty_init(void);
-void ipwireless_tty_release(void);
-
-struct ipw_tty *ipwireless_tty_create(struct ipw_hardware *hw,
- struct ipw_network *net);
-void ipwireless_tty_free(struct ipw_tty *tty);
-void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data,
- unsigned int length);
-int ipwireless_tty_is_modem(struct ipw_tty *tty);
-void ipwireless_tty_notify_control_line_change(struct ipw_tty *tty,
- unsigned int channel_idx,
- unsigned int control_lines,
- unsigned int changed_mask);
-
-#endif
obj-$(CONFIG_SYNCLINK_GT) += synclink_gt.o
obj-$(CONFIG_SYNCLINKMP) += synclinkmp.o
obj-$(CONFIG_SYNCLINK) += synclink.o
+
+obj-y += ipwireless/
--- /dev/null
+#
+# drivers/char/pcmcia/ipwireless/Makefile
+#
+# Makefile for the IPWireless driver
+#
+
+obj-$(CONFIG_IPWIRELESS) += ipwireless.o
+
+ipwireless-y := hardware.o main.o network.o tty.o
+
--- /dev/null
+/*
+ * IPWireless 3G PCMCIA Network Driver
+ *
+ * Original code
+ * by Stephen Blackheath <stephen@blacksapphire.com>,
+ * Ben Martel <benm@symmetric.co.nz>
+ *
+ * Copyrighted as follows:
+ * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
+ *
+ * Various driver changes and rewrites, port to new kernels
+ * Copyright (C) 2006-2007 Jiri Kosina
+ *
+ * Misc code cleanups and updates
+ * Copyright (C) 2007 David Sterba
+ */
+
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+
+#include "hardware.h"
+#include "setup_protocol.h"
+#include "network.h"
+#include "main.h"
+
+static void ipw_send_setup_packet(struct ipw_hardware *hw);
+static void handle_received_SETUP_packet(struct ipw_hardware *ipw,
+ unsigned int address,
+ const unsigned char *data, int len,
+ int is_last);
+static void ipwireless_setup_timer(unsigned long data);
+static void handle_received_CTRL_packet(struct ipw_hardware *hw,
+ unsigned int channel_idx, const unsigned char *data, int len);
+
+/*#define TIMING_DIAGNOSTICS*/
+
+#ifdef TIMING_DIAGNOSTICS
+
+static struct timing_stats {
+ unsigned long last_report_time;
+ unsigned long read_time;
+ unsigned long write_time;
+ unsigned long read_bytes;
+ unsigned long write_bytes;
+ unsigned long start_time;
+};
+
+static void start_timing(void)
+{
+ timing_stats.start_time = jiffies;
+}
+
+static void end_read_timing(unsigned length)
+{
+ timing_stats.read_time += (jiffies - start_time);
+ timing_stats.read_bytes += length + 2;
+ report_timing();
+}
+
+static void end_write_timing(unsigned length)
+{
+ timing_stats.write_time += (jiffies - start_time);
+ timing_stats.write_bytes += length + 2;
+ report_timing();
+}
+
+static void report_timing(void)
+{
+ unsigned long since = jiffies - timing_stats.last_report_time;
+
+ /* If it's been more than one second... */
+ if (since >= HZ) {
+ int first = (timing_stats.last_report_time == 0);
+
+ timing_stats.last_report_time = jiffies;
+ if (!first)
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME
+ ": %u us elapsed - read %lu bytes in %u us, wrote %lu bytes in %u us\n",
+ jiffies_to_usecs(since),
+ timing_stats.read_bytes,
+ jiffies_to_usecs(timing_stats.read_time),
+ timing_stats.write_bytes,
+ jiffies_to_usecs(timing_stats.write_time));
+
+ timing_stats.read_time = 0;
+ timing_stats.write_time = 0;
+ timing_stats.read_bytes = 0;
+ timing_stats.write_bytes = 0;
+ }
+}
+#else
+static void start_timing(void) { }
+static void end_read_timing(unsigned length) { }
+static void end_write_timing(unsigned length) { }
+#endif
+
+/* Imported IPW definitions */
+
+#define LL_MTU_V1 318
+#define LL_MTU_V2 250
+#define LL_MTU_MAX (LL_MTU_V1 > LL_MTU_V2 ? LL_MTU_V1 : LL_MTU_V2)
+
+#define PRIO_DATA 2
+#define PRIO_CTRL 1
+#define PRIO_SETUP 0
+
+/* Addresses */
+#define ADDR_SETUP_PROT 0
+
+/* Protocol ids */
+enum {
+ /* Identifier for the Com Data protocol */
+ TL_PROTOCOLID_COM_DATA = 0,
+
+ /* Identifier for the Com Control protocol */
+ TL_PROTOCOLID_COM_CTRL = 1,
+
+ /* Identifier for the Setup protocol */
+ TL_PROTOCOLID_SETUP = 2
+};
+
+/* Number of bytes in NL packet header (cannot do
+ * sizeof(nl_packet_header) since it's a bitfield) */
+#define NL_FIRST_PACKET_HEADER_SIZE 3
+
+/* Number of bytes in NL packet header (cannot do
+ * sizeof(nl_packet_header) since it's a bitfield) */
+#define NL_FOLLOWING_PACKET_HEADER_SIZE 1
+
+struct nl_first_packet_header {
+ unsigned char protocol:3;
+ unsigned char address:3;
+ unsigned char packet_rank:2;
+ unsigned char length_lsb;
+ unsigned char length_msb;
+};
+
+struct nl_packet_header {
+ unsigned char protocol:3;
+ unsigned char address:3;
+ unsigned char packet_rank:2;
+};
+
+/* Value of 'packet_rank' above */
+#define NL_INTERMEDIATE_PACKET 0x0
+#define NL_LAST_PACKET 0x1
+#define NL_FIRST_PACKET 0x2
+
+union nl_packet {
+ /* Network packet header of the first packet (a special case) */
+ struct nl_first_packet_header hdr_first;
+ /* Network packet header of the following packets (if any) */
+ struct nl_packet_header hdr;
+ /* Complete network packet (header + data) */
+ unsigned char rawpkt[LL_MTU_MAX];
+} __attribute__ ((__packed__));
+
+#define HW_VERSION_UNKNOWN -1
+#define HW_VERSION_1 1
+#define HW_VERSION_2 2
+
+/* IPW I/O ports */
+#define IOIER 0x00 /* Interrupt Enable Register */
+#define IOIR 0x02 /* Interrupt Source/ACK register */
+#define IODCR 0x04 /* Data Control Register */
+#define IODRR 0x06 /* Data Read Register */
+#define IODWR 0x08 /* Data Write Register */
+#define IOESR 0x0A /* Embedded Driver Status Register */
+#define IORXR 0x0C /* Rx Fifo Register (Host to Embedded) */
+#define IOTXR 0x0E /* Tx Fifo Register (Embedded to Host) */
+
+/* I/O ports and bit definitions for version 1 of the hardware */
+
+/* IER bits*/
+#define IER_RXENABLED 0x1
+#define IER_TXENABLED 0x2
+
+/* ISR bits */
+#define IR_RXINTR 0x1
+#define IR_TXINTR 0x2
+
+/* DCR bits */
+#define DCR_RXDONE 0x1
+#define DCR_TXDONE 0x2
+#define DCR_RXRESET 0x4
+#define DCR_TXRESET 0x8
+
+/* I/O ports and bit definitions for version 2 of the hardware */
+
+struct MEMCCR {
+ unsigned short reg_config_option; /* PCCOR: Configuration Option Register */
+ unsigned short reg_config_and_status; /* PCCSR: Configuration and Status Register */
+ unsigned short reg_pin_replacement; /* PCPRR: Pin Replacemant Register */
+ unsigned short reg_socket_and_copy; /* PCSCR: Socket and Copy Register */
+ unsigned short reg_ext_status; /* PCESR: Extendend Status Register */
+ unsigned short reg_io_base; /* PCIOB: I/O Base Register */
+};
+
+struct MEMINFREG {
+ unsigned short memreg_tx_old; /* TX Register (R/W) */
+ unsigned short pad1;
+ unsigned short memreg_rx_done; /* RXDone Register (R/W) */
+ unsigned short pad2;
+ unsigned short memreg_rx; /* RX Register (R/W) */
+ unsigned short pad3;
+ unsigned short memreg_pc_interrupt_ack; /* PC intr Ack Register (W) */
+ unsigned short pad4;
+ unsigned long memreg_card_present;/* Mask for Host to check (R) for
+ * CARD_PRESENT_VALUE */
+ unsigned short memreg_tx_new; /* TX2 (new) Register (R/W) */
+};
+
+#define CARD_PRESENT_VALUE (0xBEEFCAFEUL)
+
+#define MEMTX_TX 0x0001
+#define MEMRX_RX 0x0001
+#define MEMRX_RX_DONE 0x0001
+#define MEMRX_PCINTACKK 0x0001
+
+#define NL_NUM_OF_PRIORITIES 3
+#define NL_NUM_OF_PROTOCOLS 3
+#define NL_NUM_OF_ADDRESSES NO_OF_IPW_CHANNELS
+
+struct ipw_hardware {
+ unsigned int base_port;
+ short hw_version;
+ unsigned short ll_mtu;
+ spinlock_t lock;
+
+ int initializing;
+ int init_loops;
+ struct timer_list setup_timer;
+
+ /* Flag if hw is ready to send next packet */
+ int tx_ready;
+ /* Count of pending packets to be sent */
+ int tx_queued;
+ struct list_head tx_queue[NL_NUM_OF_PRIORITIES];
+
+ int rx_bytes_queued;
+ struct list_head rx_queue;
+ /* Pool of rx_packet structures that are not currently used. */
+ struct list_head rx_pool;
+ int rx_pool_size;
+ /* True if reception of data is blocked while userspace processes it. */
+ int blocking_rx;
+ /* True if there is RX data ready on the hardware. */
+ int rx_ready;
+ unsigned short last_memtx_serial;
+ /*
+ * Newer versions of the V2 card firmware send serial numbers in the
+ * MemTX register. 'serial_number_detected' is set true when we detect
+ * a non-zero serial number (indicating the new firmware). Thereafter,
+ * the driver can safely ignore the Timer Recovery re-sends to avoid
+ * out-of-sync problems.
+ */
+ int serial_number_detected;
+ struct work_struct work_rx;
+
+ /* True if we are to send the set-up data to the hardware. */
+ int to_setup;
+
+ /* Card has been removed */
+ int removed;
+ /* Saved irq value when we disable the interrupt. */
+ int irq;
+ /* True if this driver is shutting down. */
+ int shutting_down;
+ /* Modem control lines */
+ unsigned int control_lines[NL_NUM_OF_ADDRESSES];
+ struct ipw_rx_packet *packet_assembler[NL_NUM_OF_ADDRESSES];
+
+ struct tasklet_struct tasklet;
+
+ /* The handle for the network layer, for the sending of events to it. */
+ struct ipw_network *network;
+ struct MEMINFREG __iomem *memory_info_regs;
+ struct MEMCCR __iomem *memregs_CCR;
+ void (*reboot_callback) (void *data);
+ void *reboot_callback_data;
+
+ unsigned short __iomem *memreg_tx;
+};
+
+/*
+ * Packet info structure for tx packets.
+ * Note: not all the fields defined here are required for all protocols
+ */
+struct ipw_tx_packet {
+ struct list_head queue;
+ /* channel idx + 1 */
+ unsigned char dest_addr;
+ /* SETUP, CTRL or DATA */
+ unsigned char protocol;
+ /* Length of data block, which starts at the end of this structure */
+ unsigned short length;
+ /* Sending state */
+ /* Offset of where we've sent up to so far */
+ unsigned long offset;
+ /* Count of packet fragments, starting at 0 */
+ int fragment_count;
+
+ /* Called after packet is sent and before is freed */
+ void (*packet_callback) (void *cb_data, unsigned int packet_length);
+ void *callback_data;
+};
+
+/* Signals from DTE */
+#define COMCTRL_RTS 0
+#define COMCTRL_DTR 1
+
+/* Signals from DCE */
+#define COMCTRL_CTS 2
+#define COMCTRL_DCD 3
+#define COMCTRL_DSR 4
+#define COMCTRL_RI 5
+
+struct ipw_control_packet_body {
+ /* DTE signal or DCE signal */
+ unsigned char sig_no;
+ /* 0: set signal, 1: clear signal */
+ unsigned char value;
+} __attribute__ ((__packed__));
+
+struct ipw_control_packet {
+ struct ipw_tx_packet header;
+ struct ipw_control_packet_body body;
+};
+
+struct ipw_rx_packet {
+ struct list_head queue;
+ unsigned int capacity;
+ unsigned int length;
+ unsigned int protocol;
+ unsigned int channel_idx;
+};
+
+static char *data_type(const unsigned char *buf, unsigned length)
+{
+ struct nl_packet_header *hdr = (struct nl_packet_header *) buf;
+
+ if (length == 0)
+ return " ";
+
+ if (hdr->packet_rank & NL_FIRST_PACKET) {
+ switch (hdr->protocol) {
+ case TL_PROTOCOLID_COM_DATA: return "DATA ";
+ case TL_PROTOCOLID_COM_CTRL: return "CTRL ";
+ case TL_PROTOCOLID_SETUP: return "SETUP";
+ default: return "???? ";
+ }
+ } else
+ return " ";
+}
+
+#define DUMP_MAX_BYTES 64
+
+static void dump_data_bytes(const char *type, const unsigned char *data,
+ unsigned length)
+{
+ char prefix[56];
+
+ sprintf(prefix, IPWIRELESS_PCCARD_NAME ": %s %s ",
+ type, data_type(data, length));
+ print_hex_dump_bytes(prefix, 0, (void *)data,
+ length < DUMP_MAX_BYTES ? length : DUMP_MAX_BYTES);
+}
+
+static void swap_packet_bitfield_to_le(unsigned char *data)
+{
+#ifdef __BIG_ENDIAN_BITFIELD
+ unsigned char tmp = *data, ret = 0;
+
+ /*
+ * transform bits from aa.bbb.ccc to ccc.bbb.aa
+ */
+ ret |= tmp & 0xc0 >> 6;
+ ret |= tmp & 0x38 >> 1;
+ ret |= tmp & 0x07 << 5;
+ *data = ret & 0xff;
+#endif
+}
+
+static void swap_packet_bitfield_from_le(unsigned char *data)
+{
+#ifdef __BIG_ENDIAN_BITFIELD
+ unsigned char tmp = *data, ret = 0;
+
+ /*
+ * transform bits from ccc.bbb.aa to aa.bbb.ccc
+ */
+ ret |= tmp & 0xe0 >> 5;
+ ret |= tmp & 0x1c << 1;
+ ret |= tmp & 0x03 << 6;
+ *data = ret & 0xff;
+#endif
+}
+
+static void do_send_fragment(struct ipw_hardware *hw, unsigned char *data,
+ unsigned length)
+{
+ unsigned i;
+ unsigned long flags;
+
+ start_timing();
+ BUG_ON(length > hw->ll_mtu);
+
+ if (ipwireless_debug)
+ dump_data_bytes("send", data, length);
+
+ spin_lock_irqsave(&hw->lock, flags);
+
+ hw->tx_ready = 0;
+ swap_packet_bitfield_to_le(data);
+
+ if (hw->hw_version == HW_VERSION_1) {
+ outw((unsigned short) length, hw->base_port + IODWR);
+
+ for (i = 0; i < length; i += 2) {
+ unsigned short d = data[i];
+ __le16 raw_data;
+
+ if (i + 1 < length)
+ d |= data[i + 1] << 8;
+ raw_data = cpu_to_le16(d);
+ outw(raw_data, hw->base_port + IODWR);
+ }
+
+ outw(DCR_TXDONE, hw->base_port + IODCR);
+ } else if (hw->hw_version == HW_VERSION_2) {
+ outw((unsigned short) length, hw->base_port);
+
+ for (i = 0; i < length; i += 2) {
+ unsigned short d = data[i];
+ __le16 raw_data;
+
+ if (i + 1 < length)
+ d |= data[i + 1] << 8;
+ raw_data = cpu_to_le16(d);
+ outw(raw_data, hw->base_port);
+ }
+ while ((i & 3) != 2) {
+ outw((unsigned short) 0xDEAD, hw->base_port);
+ i += 2;
+ }
+ writew(MEMRX_RX, &hw->memory_info_regs->memreg_rx);
+ }
+
+ spin_unlock_irqrestore(&hw->lock, flags);
+
+ end_write_timing(length);
+}
+
+static void do_send_packet(struct ipw_hardware *hw, struct ipw_tx_packet *packet)
+{
+ unsigned short fragment_data_len;
+ unsigned short data_left = packet->length - packet->offset;
+ unsigned short header_size;
+ union nl_packet pkt;
+
+ header_size =
+ (packet->fragment_count == 0)
+ ? NL_FIRST_PACKET_HEADER_SIZE
+ : NL_FOLLOWING_PACKET_HEADER_SIZE;
+ fragment_data_len = hw->ll_mtu - header_size;
+ if (data_left < fragment_data_len)
+ fragment_data_len = data_left;
+
+ /*
+ * hdr_first is now in machine bitfield order, which will be swapped
+ * to le just before it goes to hw
+ */
+ pkt.hdr_first.protocol = packet->protocol;
+ pkt.hdr_first.address = packet->dest_addr;
+ pkt.hdr_first.packet_rank = 0;
+
+ /* First packet? */
+ if (packet->fragment_count == 0) {
+ pkt.hdr_first.packet_rank |= NL_FIRST_PACKET;
+ pkt.hdr_first.length_lsb = (unsigned char) packet->length;
+ pkt.hdr_first.length_msb =
+ (unsigned char) (packet->length >> 8);
+ }
+
+ memcpy(pkt.rawpkt + header_size,
+ ((unsigned char *) packet) + sizeof(struct ipw_tx_packet) +
+ packet->offset, fragment_data_len);
+ packet->offset += fragment_data_len;
+ packet->fragment_count++;
+
+ /* Last packet? (May also be first packet.) */
+ if (packet->offset == packet->length)
+ pkt.hdr_first.packet_rank |= NL_LAST_PACKET;
+ do_send_fragment(hw, pkt.rawpkt, header_size + fragment_data_len);
+
+ /* If this packet has unsent data, then re-queue it. */
+ if (packet->offset < packet->length) {
+ /*
+ * Re-queue it at the head of the highest priority queue so
+ * it goes before all other packets
+ */
+ unsigned long flags;
+
+ spin_lock_irqsave(&hw->lock, flags);
+ list_add(&packet->queue, &hw->tx_queue[0]);
+ hw->tx_queued++;
+ spin_unlock_irqrestore(&hw->lock, flags);
+ } else {
+ if (packet->packet_callback)
+ packet->packet_callback(packet->callback_data,
+ packet->length);
+ kfree(packet);
+ }
+}
+
+static void ipw_setup_hardware(struct ipw_hardware *hw)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&hw->lock, flags);
+ if (hw->hw_version == HW_VERSION_1) {
+ /* Reset RX FIFO */
+ outw(DCR_RXRESET, hw->base_port + IODCR);
+ /* SB: Reset TX FIFO */
+ outw(DCR_TXRESET, hw->base_port + IODCR);
+
+ /* Enable TX and RX interrupts. */
+ outw(IER_TXENABLED | IER_RXENABLED, hw->base_port + IOIER);
+ } else {
+ /*
+ * Set INTRACK bit (bit 0), which means we must explicitly
+ * acknowledge interrupts by clearing bit 2 of reg_config_and_status.
+ */
+ unsigned short csr = readw(&hw->memregs_CCR->reg_config_and_status);
+
+ csr |= 1;
+ writew(csr, &hw->memregs_CCR->reg_config_and_status);
+ }
+ spin_unlock_irqrestore(&hw->lock, flags);
+}
+
+/*
+ * If 'packet' is NULL, then this function allocates a new packet, setting its
+ * length to 0 and ensuring it has the specified minimum amount of free space.
+ *
+ * If 'packet' is not NULL, then this function enlarges it if it doesn't
+ * have the specified minimum amount of free space.
+ *
+ */
+static struct ipw_rx_packet *pool_allocate(struct ipw_hardware *hw,
+ struct ipw_rx_packet *packet,
+ int minimum_free_space)
+{
+
+ if (!packet) {
+ unsigned long flags;
+
+ spin_lock_irqsave(&hw->lock, flags);
+ if (!list_empty(&hw->rx_pool)) {
+ packet = list_first_entry(&hw->rx_pool,
+ struct ipw_rx_packet, queue);
+ hw->rx_pool_size--;
+ spin_unlock_irqrestore(&hw->lock, flags);
+ list_del(&packet->queue);
+ } else {
+ const int min_capacity =
+ ipwireless_ppp_mru(hw->network) + 2;
+ int new_capacity;
+
+ spin_unlock_irqrestore(&hw->lock, flags);
+ new_capacity =
+ (minimum_free_space > min_capacity
+ ? minimum_free_space
+ : min_capacity);
+ packet = kmalloc(sizeof(struct ipw_rx_packet)
+ + new_capacity, GFP_ATOMIC);
+ if (!packet)
+ return NULL;
+ packet->capacity = new_capacity;
+ }
+ packet->length = 0;
+ }
+
+ if (packet->length + minimum_free_space > packet->capacity) {
+ struct ipw_rx_packet *old_packet = packet;
+
+ packet = kmalloc(sizeof(struct ipw_rx_packet) +
+ old_packet->length + minimum_free_space,
+ GFP_ATOMIC);
+ if (!packet) {
+ kfree(old_packet);
+ return NULL;
+ }
+ memcpy(packet, old_packet,
+ sizeof(struct ipw_rx_packet)
+ + old_packet->length);
+ packet->capacity = old_packet->length + minimum_free_space;
+ kfree(old_packet);
+ }
+
+ return packet;
+}
+
+static void pool_free(struct ipw_hardware *hw, struct ipw_rx_packet *packet)
+{
+ if (hw->rx_pool_size > 6)
+ kfree(packet);
+ else {
+ hw->rx_pool_size++;
+ list_add(&packet->queue, &hw->rx_pool);
+ }
+}
+
+static void queue_received_packet(struct ipw_hardware *hw,
+ unsigned int protocol,
+ unsigned int address,
+ const unsigned char *data, int length,
+ int is_last)
+{
+ unsigned int channel_idx = address - 1;
+ struct ipw_rx_packet *packet = NULL;
+ unsigned long flags;
+
+ /* Discard packet if channel index is out of range. */
+ if (channel_idx >= NL_NUM_OF_ADDRESSES) {
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME
+ ": data packet has bad address %u\n", address);
+ return;
+ }
+
+ /*
+ * ->packet_assembler is safe to touch unlocked, this is the only place
+ */
+ if (protocol == TL_PROTOCOLID_COM_DATA) {
+ struct ipw_rx_packet **assem =
+ &hw->packet_assembler[channel_idx];
+
+ /*
+ * Create a new packet, or assembler already contains one
+ * enlarge it by 'length' bytes.
+ */
+ (*assem) = pool_allocate(hw, *assem, length);
+ if (!(*assem)) {
+ printk(KERN_ERR IPWIRELESS_PCCARD_NAME
+ ": no memory for incomming data packet, dropped!\n");
+ return;
+ }
+ (*assem)->protocol = protocol;
+ (*assem)->channel_idx = channel_idx;
+
+ /* Append this packet data onto existing data. */
+ memcpy((unsigned char *)(*assem) +
+ sizeof(struct ipw_rx_packet)
+ + (*assem)->length, data, length);
+ (*assem)->length += length;
+ if (is_last) {
+ packet = *assem;
+ *assem = NULL;
+ /* Count queued DATA bytes only */
+ spin_lock_irqsave(&hw->lock, flags);
+ hw->rx_bytes_queued += packet->length;
+ spin_unlock_irqrestore(&hw->lock, flags);
+ }
+ } else {
+ /* If it's a CTRL packet, don't assemble, just queue it. */
+ packet = pool_allocate(hw, NULL, length);
+ if (!packet) {
+ printk(KERN_ERR IPWIRELESS_PCCARD_NAME
+ ": no memory for incomming ctrl packet, dropped!\n");
+ return;
+ }
+ packet->protocol = protocol;
+ packet->channel_idx = channel_idx;
+ memcpy((unsigned char *)packet + sizeof(struct ipw_rx_packet),
+ data, length);
+ packet->length = length;
+ }
+
+ /*
+ * If this is the last packet, then send the assembled packet on to the
+ * network layer.
+ */
+ if (packet) {
+ spin_lock_irqsave(&hw->lock, flags);
+ list_add_tail(&packet->queue, &hw->rx_queue);
+ /* Block reception of incoming packets if queue is full. */
+ hw->blocking_rx =
+ (hw->rx_bytes_queued >= IPWIRELESS_RX_QUEUE_SIZE);
+
+ spin_unlock_irqrestore(&hw->lock, flags);
+ schedule_work(&hw->work_rx);
+ }
+}
+
+/*
+ * Workqueue callback
+ */
+static void ipw_receive_data_work(struct work_struct *work_rx)
+{
+ struct ipw_hardware *hw =
+ container_of(work_rx, struct ipw_hardware, work_rx);
+ unsigned long flags;
+
+ spin_lock_irqsave(&hw->lock, flags);
+ while (!list_empty(&hw->rx_queue)) {
+ struct ipw_rx_packet *packet =
+ list_first_entry(&hw->rx_queue,
+ struct ipw_rx_packet, queue);
+
+ if (hw->shutting_down)
+ break;
+ list_del(&packet->queue);
+
+ /*
+ * Note: ipwireless_network_packet_received must be called in a
+ * process context (i.e. via schedule_work) because the tty
+ * output code can sleep in the tty_flip_buffer_push call.
+ */
+ if (packet->protocol == TL_PROTOCOLID_COM_DATA) {
+ if (hw->network != NULL) {
+ /* If the network hasn't been disconnected. */
+ spin_unlock_irqrestore(&hw->lock, flags);
+ /*
+ * This must run unlocked due to tty processing
+ * and mutex locking
+ */
+ ipwireless_network_packet_received(
+ hw->network,
+ packet->channel_idx,
+ (unsigned char *)packet
+ + sizeof(struct ipw_rx_packet),
+ packet->length);
+ spin_lock_irqsave(&hw->lock, flags);
+ }
+ /* Count queued DATA bytes only */
+ hw->rx_bytes_queued -= packet->length;
+ } else {
+ /*
+ * This is safe to be called locked, callchain does
+ * not block
+ */
+ handle_received_CTRL_packet(hw, packet->channel_idx,
+ (unsigned char *)packet
+ + sizeof(struct ipw_rx_packet),
+ packet->length);
+ }
+ pool_free(hw, packet);
+ /*
+ * Unblock reception of incoming packets if queue is no longer
+ * full.
+ */
+ hw->blocking_rx =
+ hw->rx_bytes_queued >= IPWIRELESS_RX_QUEUE_SIZE;
+ if (hw->shutting_down)
+ break;
+ }
+ spin_unlock_irqrestore(&hw->lock, flags);
+}
+
+static void handle_received_CTRL_packet(struct ipw_hardware *hw,
+ unsigned int channel_idx,
+ const unsigned char *data, int len)
+{
+ const struct ipw_control_packet_body *body =
+ (const struct ipw_control_packet_body *) data;
+ unsigned int changed_mask;
+
+ if (len != sizeof(struct ipw_control_packet_body)) {
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME
+ ": control packet was %d bytes - wrong size!\n",
+ len);
+ return;
+ }
+
+ switch (body->sig_no) {
+ case COMCTRL_CTS:
+ changed_mask = IPW_CONTROL_LINE_CTS;
+ break;
+ case COMCTRL_DCD:
+ changed_mask = IPW_CONTROL_LINE_DCD;
+ break;
+ case COMCTRL_DSR:
+ changed_mask = IPW_CONTROL_LINE_DSR;
+ break;
+ case COMCTRL_RI:
+ changed_mask = IPW_CONTROL_LINE_RI;
+ break;
+ default:
+ changed_mask = 0;
+ }
+
+ if (changed_mask != 0) {
+ if (body->value)
+ hw->control_lines[channel_idx] |= changed_mask;
+ else
+ hw->control_lines[channel_idx] &= ~changed_mask;
+ if (hw->network)
+ ipwireless_network_notify_control_line_change(
+ hw->network,
+ channel_idx,
+ hw->control_lines[channel_idx],
+ changed_mask);
+ }
+}
+
+static void handle_received_packet(struct ipw_hardware *hw,
+ const union nl_packet *packet,
+ unsigned short len)
+{
+ unsigned int protocol = packet->hdr.protocol;
+ unsigned int address = packet->hdr.address;
+ unsigned int header_length;
+ const unsigned char *data;
+ unsigned int data_len;
+ int is_last = packet->hdr.packet_rank & NL_LAST_PACKET;
+
+ if (packet->hdr.packet_rank & NL_FIRST_PACKET)
+ header_length = NL_FIRST_PACKET_HEADER_SIZE;
+ else
+ header_length = NL_FOLLOWING_PACKET_HEADER_SIZE;
+
+ data = packet->rawpkt + header_length;
+ data_len = len - header_length;
+ switch (protocol) {
+ case TL_PROTOCOLID_COM_DATA:
+ case TL_PROTOCOLID_COM_CTRL:
+ queue_received_packet(hw, protocol, address, data, data_len,
+ is_last);
+ break;
+ case TL_PROTOCOLID_SETUP:
+ handle_received_SETUP_packet(hw, address, data, data_len,
+ is_last);
+ break;
+ }
+}
+
+static void acknowledge_data_read(struct ipw_hardware *hw)
+{
+ if (hw->hw_version == HW_VERSION_1)
+ outw(DCR_RXDONE, hw->base_port + IODCR);
+ else
+ writew(MEMRX_PCINTACKK,
+ &hw->memory_info_regs->memreg_pc_interrupt_ack);
+}
+
+/*
+ * Retrieve a packet from the IPW hardware.
+ */
+static void do_receive_packet(struct ipw_hardware *hw)
+{
+ unsigned len;
+ unsigned i;
+ unsigned char pkt[LL_MTU_MAX];
+
+ start_timing();
+
+ if (hw->hw_version == HW_VERSION_1) {
+ len = inw(hw->base_port + IODRR);
+ if (len > hw->ll_mtu) {
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME
+ ": received a packet of %u bytes - longer than the MTU!\n", len);
+ outw(DCR_RXDONE | DCR_RXRESET, hw->base_port + IODCR);
+ return;
+ }
+
+ for (i = 0; i < len; i += 2) {
+ __le16 raw_data = inw(hw->base_port + IODRR);
+ unsigned short data = le16_to_cpu(raw_data);
+
+ pkt[i] = (unsigned char) data;
+ pkt[i + 1] = (unsigned char) (data >> 8);
+ }
+ } else {
+ len = inw(hw->base_port);
+ if (len > hw->ll_mtu) {
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME
+ ": received a packet of %u bytes - longer than the MTU!\n", len);
+ writew(MEMRX_PCINTACKK,
+ &hw->memory_info_regs->memreg_pc_interrupt_ack);
+ return;
+ }
+
+ for (i = 0; i < len; i += 2) {
+ __le16 raw_data = inw(hw->base_port);
+ unsigned short data = le16_to_cpu(raw_data);
+
+ pkt[i] = (unsigned char) data;
+ pkt[i + 1] = (unsigned char) (data >> 8);
+ }
+
+ while ((i & 3) != 2) {
+ inw(hw->base_port);
+ i += 2;
+ }
+ }
+
+ acknowledge_data_read(hw);
+
+ swap_packet_bitfield_from_le(pkt);
+
+ if (ipwireless_debug)
+ dump_data_bytes("recv", pkt, len);
+
+ handle_received_packet(hw, (union nl_packet *) pkt, len);
+
+ end_read_timing(len);
+}
+
+static int get_current_packet_priority(struct ipw_hardware *hw)
+{
+ /*
+ * If we're initializing, don't send anything of higher priority than
+ * PRIO_SETUP. The network layer therefore need not care about
+ * hardware initialization - any of its stuff will simply be queued
+ * until setup is complete.
+ */
+ return (hw->to_setup || hw->initializing
+ ? PRIO_SETUP + 1 : NL_NUM_OF_PRIORITIES);
+}
+
+/*
+ * return 1 if something has been received from hw
+ */
+static int get_packets_from_hw(struct ipw_hardware *hw)
+{
+ int received = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&hw->lock, flags);
+ while (hw->rx_ready && !hw->blocking_rx) {
+ received = 1;
+ hw->rx_ready--;
+ spin_unlock_irqrestore(&hw->lock, flags);
+
+ do_receive_packet(hw);
+
+ spin_lock_irqsave(&hw->lock, flags);
+ }
+ spin_unlock_irqrestore(&hw->lock, flags);
+
+ return received;
+}
+
+/*
+ * Send pending packet up to given priority, prioritize SETUP data until
+ * hardware is fully setup.
+ *
+ * return 1 if more packets can be sent
+ */
+static int send_pending_packet(struct ipw_hardware *hw, int priority_limit)
+{
+ int more_to_send = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&hw->lock, flags);
+ if (hw->tx_queued && hw->tx_ready) {
+ int priority;
+ struct ipw_tx_packet *packet = NULL;
+
+ /* Pick a packet */
+ for (priority = 0; priority < priority_limit; priority++) {
+ if (!list_empty(&hw->tx_queue[priority])) {
+ packet = list_first_entry(
+ &hw->tx_queue[priority],
+ struct ipw_tx_packet,
+ queue);
+
+ hw->tx_queued--;
+ list_del(&packet->queue);
+
+ break;
+ }
+ }
+ if (!packet) {
+ hw->tx_queued = 0;
+ spin_unlock_irqrestore(&hw->lock, flags);
+ return 0;
+ }
+
+ spin_unlock_irqrestore(&hw->lock, flags);
+
+ /* Send */
+ do_send_packet(hw, packet);
+
+ /* Check if more to send */
+ spin_lock_irqsave(&hw->lock, flags);
+ for (priority = 0; priority < priority_limit; priority++)
+ if (!list_empty(&hw->tx_queue[priority])) {
+ more_to_send = 1;
+ break;
+ }
+
+ if (!more_to_send)
+ hw->tx_queued = 0;
+ }
+ spin_unlock_irqrestore(&hw->lock, flags);
+
+ return more_to_send;
+}
+
+/*
+ * Send and receive all queued packets.
+ */
+static void ipwireless_do_tasklet(unsigned long hw_)
+{
+ struct ipw_hardware *hw = (struct ipw_hardware *) hw_;
+ unsigned long flags;
+
+ spin_lock_irqsave(&hw->lock, flags);
+ if (hw->shutting_down) {
+ spin_unlock_irqrestore(&hw->lock, flags);
+ return;
+ }
+
+ if (hw->to_setup == 1) {
+ /*
+ * Initial setup data sent to hardware
+ */
+ hw->to_setup = 2;
+ spin_unlock_irqrestore(&hw->lock, flags);
+
+ ipw_setup_hardware(hw);
+ ipw_send_setup_packet(hw);
+
+ send_pending_packet(hw, PRIO_SETUP + 1);
+ get_packets_from_hw(hw);
+ } else {
+ int priority_limit = get_current_packet_priority(hw);
+ int again;
+
+ spin_unlock_irqrestore(&hw->lock, flags);
+
+ do {
+ again = send_pending_packet(hw, priority_limit);
+ again |= get_packets_from_hw(hw);
+ } while (again);
+ }
+}
+
+/*
+ * return true if the card is physically present.
+ */
+static int is_card_present(struct ipw_hardware *hw)
+{
+ if (hw->hw_version == HW_VERSION_1)
+ return inw(hw->base_port + IOIR) != 0xFFFF;
+ else
+ return readl(&hw->memory_info_regs->memreg_card_present) ==
+ CARD_PRESENT_VALUE;
+}
+
+static irqreturn_t ipwireless_handle_v1_interrupt(int irq,
+ struct ipw_hardware *hw)
+{
+ unsigned short irqn;
+
+ irqn = inw(hw->base_port + IOIR);
+
+ /* Check if card is present */
+ if (irqn == 0xFFFF)
+ return IRQ_NONE;
+ else if (irqn != 0) {
+ unsigned short ack = 0;
+ unsigned long flags;
+
+ /* Transmit complete. */
+ if (irqn & IR_TXINTR) {
+ ack |= IR_TXINTR;
+ spin_lock_irqsave(&hw->lock, flags);
+ hw->tx_ready = 1;
+ spin_unlock_irqrestore(&hw->lock, flags);
+ }
+ /* Received data */
+ if (irqn & IR_RXINTR) {
+ ack |= IR_RXINTR;
+ spin_lock_irqsave(&hw->lock, flags);
+ hw->rx_ready++;
+ spin_unlock_irqrestore(&hw->lock, flags);
+ }
+ if (ack != 0) {
+ outw(ack, hw->base_port + IOIR);
+ tasklet_schedule(&hw->tasklet);
+ }
+ return IRQ_HANDLED;
+ }
+ return IRQ_NONE;
+}
+
+static void acknowledge_pcmcia_interrupt(struct ipw_hardware *hw)
+{
+ unsigned short csr = readw(&hw->memregs_CCR->reg_config_and_status);
+
+ csr &= 0xfffd;
+ writew(csr, &hw->memregs_CCR->reg_config_and_status);
+}
+
+static irqreturn_t ipwireless_handle_v2_v3_interrupt(int irq,
+ struct ipw_hardware *hw)
+{
+ int tx = 0;
+ int rx = 0;
+ int rx_repeat = 0;
+ int try_mem_tx_old;
+ unsigned long flags;
+
+ do {
+
+ unsigned short memtx = readw(hw->memreg_tx);
+ unsigned short memtx_serial;
+ unsigned short memrxdone =
+ readw(&hw->memory_info_regs->memreg_rx_done);
+
+ try_mem_tx_old = 0;
+
+ /* check whether the interrupt was generated by ipwireless card */
+ if (!(memtx & MEMTX_TX) && !(memrxdone & MEMRX_RX_DONE)) {
+
+ /* check if the card uses memreg_tx_old register */
+ if (hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) {
+ memtx = readw(&hw->memory_info_regs->memreg_tx_old);
+ if (memtx & MEMTX_TX) {
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME
+ ": Using memreg_tx_old\n");
+ hw->memreg_tx =
+ &hw->memory_info_regs->memreg_tx_old;
+ } else {
+ return IRQ_NONE;
+ }
+ } else
+ return IRQ_NONE;
+ }
+
+ /*
+ * See if the card is physically present. Note that while it is
+ * powering up, it appears not to be present.
+ */
+ if (!is_card_present(hw)) {
+ acknowledge_pcmcia_interrupt(hw);
+ return IRQ_HANDLED;
+ }
+
+ memtx_serial = memtx & (unsigned short) 0xff00;
+ if (memtx & MEMTX_TX) {
+ writew(memtx_serial, hw->memreg_tx);
+
+ if (hw->serial_number_detected) {
+ if (memtx_serial != hw->last_memtx_serial) {
+ hw->last_memtx_serial = memtx_serial;
+ spin_lock_irqsave(&hw->lock, flags);
+ hw->rx_ready++;
+ spin_unlock_irqrestore(&hw->lock, flags);
+ rx = 1;
+ } else
+ /* Ignore 'Timer Recovery' duplicates. */
+ rx_repeat = 1;
+ } else {
+ /*
+ * If a non-zero serial number is seen, then enable
+ * serial number checking.
+ */
+ if (memtx_serial != 0) {
+ hw->serial_number_detected = 1;
+ printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
+ ": memreg_tx serial num detected\n");
+
+ spin_lock_irqsave(&hw->lock, flags);
+ hw->rx_ready++;
+ spin_unlock_irqrestore(&hw->lock, flags);
+ }
+ rx = 1;
+ }
+ }
+ if (memrxdone & MEMRX_RX_DONE) {
+ writew(0, &hw->memory_info_regs->memreg_rx_done);
+ spin_lock_irqsave(&hw->lock, flags);
+ hw->tx_ready = 1;
+ spin_unlock_irqrestore(&hw->lock, flags);
+ tx = 1;
+ }
+ if (tx)
+ writew(MEMRX_PCINTACKK,
+ &hw->memory_info_regs->memreg_pc_interrupt_ack);
+
+ acknowledge_pcmcia_interrupt(hw);
+
+ if (tx || rx)
+ tasklet_schedule(&hw->tasklet);
+ else if (!rx_repeat) {
+ if (hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) {
+ if (hw->serial_number_detected)
+ printk(KERN_WARNING IPWIRELESS_PCCARD_NAME
+ ": spurious interrupt - new_tx mode\n");
+ else {
+ printk(KERN_WARNING IPWIRELESS_PCCARD_NAME
+ ": no valid memreg_tx value - switching to the old memreg_tx\n");
+ hw->memreg_tx =
+ &hw->memory_info_regs->memreg_tx_old;
+ try_mem_tx_old = 1;
+ }
+ } else
+ printk(KERN_WARNING IPWIRELESS_PCCARD_NAME
+ ": spurious interrupt - old_tx mode\n");
+ }
+
+ } while (try_mem_tx_old == 1);
+
+ return IRQ_HANDLED;
+}
+
+irqreturn_t ipwireless_interrupt(int irq, void *dev_id)
+{
+ struct ipw_dev *ipw = dev_id;
+
+ if (ipw->hardware->hw_version == HW_VERSION_1)
+ return ipwireless_handle_v1_interrupt(irq, ipw->hardware);
+ else
+ return ipwireless_handle_v2_v3_interrupt(irq, ipw->hardware);
+}
+
+static void flush_packets_to_hw(struct ipw_hardware *hw)
+{
+ int priority_limit;
+ unsigned long flags;
+
+ spin_lock_irqsave(&hw->lock, flags);
+ priority_limit = get_current_packet_priority(hw);
+ spin_unlock_irqrestore(&hw->lock, flags);
+
+ while (send_pending_packet(hw, priority_limit));
+}
+
+static void send_packet(struct ipw_hardware *hw, int priority,
+ struct ipw_tx_packet *packet)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&hw->lock, flags);
+ list_add_tail(&packet->queue, &hw->tx_queue[priority]);
+ hw->tx_queued++;
+ spin_unlock_irqrestore(&hw->lock, flags);
+
+ flush_packets_to_hw(hw);
+}
+
+/* Create data packet, non-atomic allocation */
+static void *alloc_data_packet(int data_size,
+ unsigned char dest_addr,
+ unsigned char protocol)
+{
+ struct ipw_tx_packet *packet = kzalloc(
+ sizeof(struct ipw_tx_packet) + data_size,
+ GFP_ATOMIC);
+
+ if (!packet)
+ return NULL;
+
+ INIT_LIST_HEAD(&packet->queue);
+ packet->dest_addr = dest_addr;
+ packet->protocol = protocol;
+ packet->length = data_size;
+
+ return packet;
+}
+
+static void *alloc_ctrl_packet(int header_size,
+ unsigned char dest_addr,
+ unsigned char protocol,
+ unsigned char sig_no)
+{
+ /*
+ * sig_no is located right after ipw_tx_packet struct in every
+ * CTRL or SETUP packets, we can use ipw_control_packet as a
+ * common struct
+ */
+ struct ipw_control_packet *packet = kzalloc(header_size, GFP_ATOMIC);
+
+ if (!packet)
+ return NULL;
+
+ INIT_LIST_HEAD(&packet->header.queue);
+ packet->header.dest_addr = dest_addr;
+ packet->header.protocol = protocol;
+ packet->header.length = header_size - sizeof(struct ipw_tx_packet);
+ packet->body.sig_no = sig_no;
+
+ return packet;
+}
+
+int ipwireless_send_packet(struct ipw_hardware *hw, unsigned int channel_idx,
+ const unsigned char *data, unsigned int length,
+ void (*callback) (void *cb, unsigned int length),
+ void *callback_data)
+{
+ struct ipw_tx_packet *packet;
+
+ packet = alloc_data_packet(length, (channel_idx + 1),
+ TL_PROTOCOLID_COM_DATA);
+ if (!packet)
+ return -ENOMEM;
+ packet->packet_callback = callback;
+ packet->callback_data = callback_data;
+ memcpy((unsigned char *) packet + sizeof(struct ipw_tx_packet), data,
+ length);
+
+ send_packet(hw, PRIO_DATA, packet);
+ return 0;
+}
+
+static int set_control_line(struct ipw_hardware *hw, int prio,
+ unsigned int channel_idx, int line, int state)
+{
+ struct ipw_control_packet *packet;
+ int protocolid = TL_PROTOCOLID_COM_CTRL;
+
+ if (prio == PRIO_SETUP)
+ protocolid = TL_PROTOCOLID_SETUP;
+
+ packet = alloc_ctrl_packet(sizeof(struct ipw_control_packet),
+ (channel_idx + 1), protocolid, line);
+ if (!packet)
+ return -ENOMEM;
+ packet->header.length = sizeof(struct ipw_control_packet_body);
+ packet->body.value = (state == 0 ? 0 : 1);
+ send_packet(hw, prio, &packet->header);
+ return 0;
+}
+
+
+static int set_DTR(struct ipw_hardware *hw, int priority,
+ unsigned int channel_idx, int state)
+{
+ if (state != 0)
+ hw->control_lines[channel_idx] |= IPW_CONTROL_LINE_DTR;
+ else
+ hw->control_lines[channel_idx] &= ~IPW_CONTROL_LINE_DTR;
+
+ return set_control_line(hw, priority, channel_idx, COMCTRL_DTR, state);
+}
+
+static int set_RTS(struct ipw_hardware *hw, int priority,
+ unsigned int channel_idx, int state)
+{
+ if (state != 0)
+ hw->control_lines[channel_idx] |= IPW_CONTROL_LINE_RTS;
+ else
+ hw->control_lines[channel_idx] &= ~IPW_CONTROL_LINE_RTS;
+
+ return set_control_line(hw, priority, channel_idx, COMCTRL_RTS, state);
+}
+
+int ipwireless_set_DTR(struct ipw_hardware *hw, unsigned int channel_idx,
+ int state)
+{
+ return set_DTR(hw, PRIO_CTRL, channel_idx, state);
+}
+
+int ipwireless_set_RTS(struct ipw_hardware *hw, unsigned int channel_idx,
+ int state)
+{
+ return set_RTS(hw, PRIO_CTRL, channel_idx, state);
+}
+
+struct ipw_setup_get_version_query_packet {
+ struct ipw_tx_packet header;
+ struct tl_setup_get_version_qry body;
+};
+
+struct ipw_setup_config_packet {
+ struct ipw_tx_packet header;
+ struct tl_setup_config_msg body;
+};
+
+struct ipw_setup_config_done_packet {
+ struct ipw_tx_packet header;
+ struct tl_setup_config_done_msg body;
+};
+
+struct ipw_setup_open_packet {
+ struct ipw_tx_packet header;
+ struct tl_setup_open_msg body;
+};
+
+struct ipw_setup_info_packet {
+ struct ipw_tx_packet header;
+ struct tl_setup_info_msg body;
+};
+
+struct ipw_setup_reboot_msg_ack {
+ struct ipw_tx_packet header;
+ struct TlSetupRebootMsgAck body;
+};
+
+/* This handles the actual initialization of the card */
+static void __handle_setup_get_version_rsp(struct ipw_hardware *hw)
+{
+ struct ipw_setup_config_packet *config_packet;
+ struct ipw_setup_config_done_packet *config_done_packet;
+ struct ipw_setup_open_packet *open_packet;
+ struct ipw_setup_info_packet *info_packet;
+ int port;
+ unsigned int channel_idx;
+
+ /* generate config packet */
+ for (port = 1; port <= NL_NUM_OF_ADDRESSES; port++) {
+ config_packet = alloc_ctrl_packet(
+ sizeof(struct ipw_setup_config_packet),
+ ADDR_SETUP_PROT,
+ TL_PROTOCOLID_SETUP,
+ TL_SETUP_SIGNO_CONFIG_MSG);
+ if (!config_packet)
+ goto exit_nomem;
+ config_packet->header.length = sizeof(struct tl_setup_config_msg);
+ config_packet->body.port_no = port;
+ config_packet->body.prio_data = PRIO_DATA;
+ config_packet->body.prio_ctrl = PRIO_CTRL;
+ send_packet(hw, PRIO_SETUP, &config_packet->header);
+ }
+ config_done_packet = alloc_ctrl_packet(
+ sizeof(struct ipw_setup_config_done_packet),
+ ADDR_SETUP_PROT,
+ TL_PROTOCOLID_SETUP,
+ TL_SETUP_SIGNO_CONFIG_DONE_MSG);
+ if (!config_done_packet)
+ goto exit_nomem;
+ config_done_packet->header.length = sizeof(struct tl_setup_config_done_msg);
+ send_packet(hw, PRIO_SETUP, &config_done_packet->header);
+
+ /* generate open packet */
+ for (port = 1; port <= NL_NUM_OF_ADDRESSES; port++) {
+ open_packet = alloc_ctrl_packet(
+ sizeof(struct ipw_setup_open_packet),
+ ADDR_SETUP_PROT,
+ TL_PROTOCOLID_SETUP,
+ TL_SETUP_SIGNO_OPEN_MSG);
+ if (!open_packet)
+ goto exit_nomem;
+ open_packet->header.length = sizeof(struct tl_setup_open_msg);
+ open_packet->body.port_no = port;
+ send_packet(hw, PRIO_SETUP, &open_packet->header);
+ }
+ for (channel_idx = 0;
+ channel_idx < NL_NUM_OF_ADDRESSES; channel_idx++) {
+ int ret;
+
+ ret = set_DTR(hw, PRIO_SETUP, channel_idx,
+ (hw->control_lines[channel_idx] &
+ IPW_CONTROL_LINE_DTR) != 0);
+ if (ret) {
+ printk(KERN_ERR IPWIRELESS_PCCARD_NAME
+ ": error setting DTR (%d)\n", ret);
+ return;
+ }
+
+ set_RTS(hw, PRIO_SETUP, channel_idx,
+ (hw->control_lines [channel_idx] &
+ IPW_CONTROL_LINE_RTS) != 0);
+ if (ret) {
+ printk(KERN_ERR IPWIRELESS_PCCARD_NAME
+ ": error setting RTS (%d)\n", ret);
+ return;
+ }
+ }
+ /*
+ * For NDIS we assume that we are using sync PPP frames, for COM async.
+ * This driver uses NDIS mode too. We don't bother with translation
+ * from async -> sync PPP.
+ */
+ info_packet = alloc_ctrl_packet(sizeof(struct ipw_setup_info_packet),
+ ADDR_SETUP_PROT,
+ TL_PROTOCOLID_SETUP,
+ TL_SETUP_SIGNO_INFO_MSG);
+ if (!info_packet)
+ goto exit_nomem;
+ info_packet->header.length = sizeof(struct tl_setup_info_msg);
+ info_packet->body.driver_type = NDISWAN_DRIVER;
+ info_packet->body.major_version = NDISWAN_DRIVER_MAJOR_VERSION;
+ info_packet->body.minor_version = NDISWAN_DRIVER_MINOR_VERSION;
+ send_packet(hw, PRIO_SETUP, &info_packet->header);
+
+ /* Initialization is now complete, so we clear the 'to_setup' flag */
+ hw->to_setup = 0;
+
+ return;
+
+exit_nomem:
+ printk(KERN_ERR IPWIRELESS_PCCARD_NAME
+ ": not enough memory to alloc control packet\n");
+ hw->to_setup = -1;
+}
+
+static void handle_setup_get_version_rsp(struct ipw_hardware *hw,
+ unsigned char vers_no)
+{
+ del_timer(&hw->setup_timer);
+ hw->initializing = 0;
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME ": card is ready.\n");
+
+ if (vers_no == TL_SETUP_VERSION)
+ __handle_setup_get_version_rsp(hw);
+ else
+ printk(KERN_ERR IPWIRELESS_PCCARD_NAME
+ ": invalid hardware version no %u\n",
+ (unsigned int) vers_no);
+}
+
+static void ipw_send_setup_packet(struct ipw_hardware *hw)
+{
+ struct ipw_setup_get_version_query_packet *ver_packet;
+
+ ver_packet = alloc_ctrl_packet(
+ sizeof(struct ipw_setup_get_version_query_packet),
+ ADDR_SETUP_PROT, TL_PROTOCOLID_SETUP,
+ TL_SETUP_SIGNO_GET_VERSION_QRY);
+ ver_packet->header.length = sizeof(struct tl_setup_get_version_qry);
+
+ /*
+ * Response is handled in handle_received_SETUP_packet
+ */
+ send_packet(hw, PRIO_SETUP, &ver_packet->header);
+}
+
+static void handle_received_SETUP_packet(struct ipw_hardware *hw,
+ unsigned int address,
+ const unsigned char *data, int len,
+ int is_last)
+{
+ const union ipw_setup_rx_msg *rx_msg = (const union ipw_setup_rx_msg *) data;
+
+ if (address != ADDR_SETUP_PROT) {
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME
+ ": setup packet has bad address %d\n", address);
+ return;
+ }
+
+ switch (rx_msg->sig_no) {
+ case TL_SETUP_SIGNO_GET_VERSION_RSP:
+ if (hw->to_setup)
+ handle_setup_get_version_rsp(hw,
+ rx_msg->version_rsp_msg.version);
+ break;
+
+ case TL_SETUP_SIGNO_OPEN_MSG:
+ if (ipwireless_debug) {
+ unsigned int channel_idx = rx_msg->open_msg.port_no - 1;
+
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME
+ ": OPEN_MSG [channel %u] reply received\n",
+ channel_idx);
+ }
+ break;
+
+ case TL_SETUP_SIGNO_INFO_MSG_ACK:
+ if (ipwireless_debug)
+ printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
+ ": card successfully configured as NDISWAN\n");
+ break;
+
+ case TL_SETUP_SIGNO_REBOOT_MSG:
+ if (hw->to_setup)
+ printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
+ ": Setup not completed - ignoring reboot msg\n");
+ else {
+ struct ipw_setup_reboot_msg_ack *packet;
+
+ printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
+ ": Acknowledging REBOOT message\n");
+ packet = alloc_ctrl_packet(
+ sizeof(struct ipw_setup_reboot_msg_ack),
+ ADDR_SETUP_PROT, TL_PROTOCOLID_SETUP,
+ TL_SETUP_SIGNO_REBOOT_MSG_ACK);
+ packet->header.length =
+ sizeof(struct TlSetupRebootMsgAck);
+ send_packet(hw, PRIO_SETUP, &packet->header);
+ if (hw->reboot_callback)
+ hw->reboot_callback(hw->reboot_callback_data);
+ }
+ break;
+
+ default:
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME
+ ": unknown setup message %u received\n",
+ (unsigned int) rx_msg->sig_no);
+ }
+}
+
+static void do_close_hardware(struct ipw_hardware *hw)
+{
+ unsigned int irqn;
+
+ if (hw->hw_version == HW_VERSION_1) {
+ /* Disable TX and RX interrupts. */
+ outw(0, hw->base_port + IOIER);
+
+ /* Acknowledge any outstanding interrupt requests */
+ irqn = inw(hw->base_port + IOIR);
+ if (irqn & IR_TXINTR)
+ outw(IR_TXINTR, hw->base_port + IOIR);
+ if (irqn & IR_RXINTR)
+ outw(IR_RXINTR, hw->base_port + IOIR);
+
+ synchronize_irq(hw->irq);
+ }
+}
+
+struct ipw_hardware *ipwireless_hardware_create(void)
+{
+ int i;
+ struct ipw_hardware *hw =
+ kzalloc(sizeof(struct ipw_hardware), GFP_KERNEL);
+
+ if (!hw)
+ return NULL;
+
+ hw->irq = -1;
+ hw->initializing = 1;
+ hw->tx_ready = 1;
+ hw->rx_bytes_queued = 0;
+ hw->rx_pool_size = 0;
+ hw->last_memtx_serial = (unsigned short) 0xffff;
+ for (i = 0; i < NL_NUM_OF_PRIORITIES; i++)
+ INIT_LIST_HEAD(&hw->tx_queue[i]);
+
+ INIT_LIST_HEAD(&hw->rx_queue);
+ INIT_LIST_HEAD(&hw->rx_pool);
+ spin_lock_init(&hw->lock);
+ tasklet_init(&hw->tasklet, ipwireless_do_tasklet, (unsigned long) hw);
+ INIT_WORK(&hw->work_rx, ipw_receive_data_work);
+ setup_timer(&hw->setup_timer, ipwireless_setup_timer,
+ (unsigned long) hw);
+
+ return hw;
+}
+
+void ipwireless_init_hardware_v1(struct ipw_hardware *hw,
+ unsigned int base_port,
+ void __iomem *attr_memory,
+ void __iomem *common_memory,
+ int is_v2_card,
+ void (*reboot_callback) (void *data),
+ void *reboot_callback_data)
+{
+ if (hw->removed) {
+ hw->removed = 0;
+ enable_irq(hw->irq);
+ }
+ hw->base_port = base_port;
+ hw->hw_version = (is_v2_card ? HW_VERSION_2 : HW_VERSION_1);
+ hw->ll_mtu = (hw->hw_version == HW_VERSION_1 ? LL_MTU_V1 : LL_MTU_V2);
+ hw->memregs_CCR = (struct MEMCCR __iomem *)
+ ((unsigned short __iomem *) attr_memory + 0x200);
+ hw->memory_info_regs = (struct MEMINFREG __iomem *) common_memory;
+ hw->memreg_tx = &hw->memory_info_regs->memreg_tx_new;
+ hw->reboot_callback = reboot_callback;
+ hw->reboot_callback_data = reboot_callback_data;
+}
+
+void ipwireless_init_hardware_v2_v3(struct ipw_hardware *hw)
+{
+ hw->initializing = 1;
+ hw->init_loops = 0;
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME
+ ": waiting for card to start up...\n");
+ ipwireless_setup_timer((unsigned long) hw);
+}
+
+static void ipwireless_setup_timer(unsigned long data)
+{
+ struct ipw_hardware *hw = (struct ipw_hardware *) data;
+
+ hw->init_loops++;
+
+ if (hw->init_loops == TL_SETUP_MAX_VERSION_QRY &&
+ hw->hw_version == HW_VERSION_2 &&
+ hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) {
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME
+ ": failed to startup using TX2, trying TX\n");
+
+ hw->memreg_tx = &hw->memory_info_regs->memreg_tx_old;
+ hw->init_loops = 0;
+ }
+ /* Give up after a certain number of retries */
+ if (hw->init_loops == TL_SETUP_MAX_VERSION_QRY) {
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME
+ ": card failed to start up!\n");
+ hw->initializing = 0;
+ } else {
+ /* Do not attempt to write to the board if it is not present. */
+ if (is_card_present(hw)) {
+ unsigned long flags;
+
+ spin_lock_irqsave(&hw->lock, flags);
+ hw->to_setup = 1;
+ hw->tx_ready = 1;
+ spin_unlock_irqrestore(&hw->lock, flags);
+ tasklet_schedule(&hw->tasklet);
+ }
+
+ mod_timer(&hw->setup_timer,
+ jiffies + msecs_to_jiffies(TL_SETUP_VERSION_QRY_TMO));
+ }
+}
+
+/*
+ * Stop any interrupts from executing so that, once this function returns,
+ * other layers of the driver can be sure they won't get any more callbacks.
+ * Thus must be called on a proper process context.
+ */
+void ipwireless_stop_interrupts(struct ipw_hardware *hw)
+{
+ if (!hw->shutting_down) {
+ /* Tell everyone we are going down. */
+ hw->shutting_down = 1;
+ del_timer(&hw->setup_timer);
+
+ /* Prevent the hardware from sending any more interrupts */
+ do_close_hardware(hw);
+ }
+}
+
+void ipwireless_hardware_free(struct ipw_hardware *hw)
+{
+ int i;
+ struct ipw_rx_packet *rp, *rq;
+ struct ipw_tx_packet *tp, *tq;
+
+ ipwireless_stop_interrupts(hw);
+
+ flush_work_sync(&hw->work_rx);
+
+ for (i = 0; i < NL_NUM_OF_ADDRESSES; i++)
+ if (hw->packet_assembler[i] != NULL)
+ kfree(hw->packet_assembler[i]);
+
+ for (i = 0; i < NL_NUM_OF_PRIORITIES; i++)
+ list_for_each_entry_safe(tp, tq, &hw->tx_queue[i], queue) {
+ list_del(&tp->queue);
+ kfree(tp);
+ }
+
+ list_for_each_entry_safe(rp, rq, &hw->rx_queue, queue) {
+ list_del(&rp->queue);
+ kfree(rp);
+ }
+
+ list_for_each_entry_safe(rp, rq, &hw->rx_pool, queue) {
+ list_del(&rp->queue);
+ kfree(rp);
+ }
+ kfree(hw);
+}
+
+/*
+ * Associate the specified network with this hardware, so it will receive events
+ * from it.
+ */
+void ipwireless_associate_network(struct ipw_hardware *hw,
+ struct ipw_network *network)
+{
+ hw->network = network;
+}
--- /dev/null
+/*
+ * IPWireless 3G PCMCIA Network Driver
+ *
+ * Original code
+ * by Stephen Blackheath <stephen@blacksapphire.com>,
+ * Ben Martel <benm@symmetric.co.nz>
+ *
+ * Copyrighted as follows:
+ * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
+ *
+ * Various driver changes and rewrites, port to new kernels
+ * Copyright (C) 2006-2007 Jiri Kosina
+ *
+ * Misc code cleanups and updates
+ * Copyright (C) 2007 David Sterba
+ */
+
+#ifndef _IPWIRELESS_CS_HARDWARE_H_
+#define _IPWIRELESS_CS_HARDWARE_H_
+
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+
+#define IPW_CONTROL_LINE_CTS 0x0001
+#define IPW_CONTROL_LINE_DCD 0x0002
+#define IPW_CONTROL_LINE_DSR 0x0004
+#define IPW_CONTROL_LINE_RI 0x0008
+#define IPW_CONTROL_LINE_DTR 0x0010
+#define IPW_CONTROL_LINE_RTS 0x0020
+
+struct ipw_hardware;
+struct ipw_network;
+
+struct ipw_hardware *ipwireless_hardware_create(void);
+void ipwireless_hardware_free(struct ipw_hardware *hw);
+irqreturn_t ipwireless_interrupt(int irq, void *dev_id);
+int ipwireless_set_DTR(struct ipw_hardware *hw, unsigned int channel_idx,
+ int state);
+int ipwireless_set_RTS(struct ipw_hardware *hw, unsigned int channel_idx,
+ int state);
+int ipwireless_send_packet(struct ipw_hardware *hw,
+ unsigned int channel_idx,
+ const unsigned char *data,
+ unsigned int length,
+ void (*packet_sent_callback) (void *cb,
+ unsigned int length),
+ void *sent_cb_data);
+void ipwireless_associate_network(struct ipw_hardware *hw,
+ struct ipw_network *net);
+void ipwireless_stop_interrupts(struct ipw_hardware *hw);
+void ipwireless_init_hardware_v1(struct ipw_hardware *hw,
+ unsigned int base_port,
+ void __iomem *attr_memory,
+ void __iomem *common_memory,
+ int is_v2_card,
+ void (*reboot_cb) (void *data),
+ void *reboot_cb_data);
+void ipwireless_init_hardware_v2_v3(struct ipw_hardware *hw);
+void ipwireless_sleep(unsigned int tenths);
+
+#endif
--- /dev/null
+/*
+ * IPWireless 3G PCMCIA Network Driver
+ *
+ * Original code
+ * by Stephen Blackheath <stephen@blacksapphire.com>,
+ * Ben Martel <benm@symmetric.co.nz>
+ *
+ * Copyrighted as follows:
+ * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
+ *
+ * Various driver changes and rewrites, port to new kernels
+ * Copyright (C) 2006-2007 Jiri Kosina
+ *
+ * Misc code cleanups and updates
+ * Copyright (C) 2007 David Sterba
+ */
+
+#include "hardware.h"
+#include "network.h"
+#include "main.h"
+#include "tty.h"
+
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+
+#include <pcmcia/cisreg.h>
+#include <pcmcia/device_id.h>
+#include <pcmcia/ss.h>
+#include <pcmcia/ds.h>
+
+static struct pcmcia_device_id ipw_ids[] = {
+ PCMCIA_DEVICE_MANF_CARD(0x02f2, 0x0100),
+ PCMCIA_DEVICE_MANF_CARD(0x02f2, 0x0200),
+ PCMCIA_DEVICE_NULL
+};
+MODULE_DEVICE_TABLE(pcmcia, ipw_ids);
+
+static void ipwireless_detach(struct pcmcia_device *link);
+
+/*
+ * Module params
+ */
+/* Debug mode: more verbose, print sent/recv bytes */
+int ipwireless_debug;
+int ipwireless_loopback;
+int ipwireless_out_queue = 10;
+
+module_param_named(debug, ipwireless_debug, int, 0);
+module_param_named(loopback, ipwireless_loopback, int, 0);
+module_param_named(out_queue, ipwireless_out_queue, int, 0);
+MODULE_PARM_DESC(debug, "switch on debug messages [0]");
+MODULE_PARM_DESC(loopback,
+ "debug: enable ras_raw channel [0]");
+MODULE_PARM_DESC(out_queue, "debug: set size of outgoing PPP queue [10]");
+
+/* Executes in process context. */
+static void signalled_reboot_work(struct work_struct *work_reboot)
+{
+ struct ipw_dev *ipw = container_of(work_reboot, struct ipw_dev,
+ work_reboot);
+ struct pcmcia_device *link = ipw->link;
+ pcmcia_reset_card(link->socket);
+}
+
+static void signalled_reboot_callback(void *callback_data)
+{
+ struct ipw_dev *ipw = (struct ipw_dev *) callback_data;
+
+ /* Delegate to process context. */
+ schedule_work(&ipw->work_reboot);
+}
+
+static int ipwireless_probe(struct pcmcia_device *p_dev, void *priv_data)
+{
+ struct ipw_dev *ipw = priv_data;
+ struct resource *io_resource;
+ int ret;
+
+ p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
+ p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
+
+ /* 0x40 causes it to generate level mode interrupts. */
+ /* 0x04 enables IREQ pin. */
+ p_dev->config_index |= 0x44;
+ p_dev->io_lines = 16;
+ ret = pcmcia_request_io(p_dev);
+ if (ret)
+ return ret;
+
+ io_resource = request_region(p_dev->resource[0]->start,
+ resource_size(p_dev->resource[0]),
+ IPWIRELESS_PCCARD_NAME);
+
+ p_dev->resource[2]->flags |=
+ WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_CM | WIN_ENABLE;
+
+ ret = pcmcia_request_window(p_dev, p_dev->resource[2], 0);
+ if (ret != 0)
+ goto exit1;
+
+ ret = pcmcia_map_mem_page(p_dev, p_dev->resource[2], p_dev->card_addr);
+ if (ret != 0)
+ goto exit2;
+
+ ipw->is_v2_card = resource_size(p_dev->resource[2]) == 0x100;
+
+ ipw->attr_memory = ioremap(p_dev->resource[2]->start,
+ resource_size(p_dev->resource[2]));
+ request_mem_region(p_dev->resource[2]->start,
+ resource_size(p_dev->resource[2]),
+ IPWIRELESS_PCCARD_NAME);
+
+ p_dev->resource[3]->flags |= WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_AM |
+ WIN_ENABLE;
+ p_dev->resource[3]->end = 0; /* this used to be 0x1000 */
+ ret = pcmcia_request_window(p_dev, p_dev->resource[3], 0);
+ if (ret != 0)
+ goto exit2;
+
+ ret = pcmcia_map_mem_page(p_dev, p_dev->resource[3], 0);
+ if (ret != 0)
+ goto exit3;
+
+ ipw->attr_memory = ioremap(p_dev->resource[3]->start,
+ resource_size(p_dev->resource[3]));
+ request_mem_region(p_dev->resource[3]->start,
+ resource_size(p_dev->resource[3]),
+ IPWIRELESS_PCCARD_NAME);
+
+ return 0;
+
+exit3:
+exit2:
+ if (ipw->common_memory) {
+ release_mem_region(p_dev->resource[2]->start,
+ resource_size(p_dev->resource[2]));
+ iounmap(ipw->common_memory);
+ }
+exit1:
+ release_resource(io_resource);
+ pcmcia_disable_device(p_dev);
+ return -1;
+}
+
+static int config_ipwireless(struct ipw_dev *ipw)
+{
+ struct pcmcia_device *link = ipw->link;
+ int ret = 0;
+
+ ipw->is_v2_card = 0;
+ link->config_flags |= CONF_AUTO_SET_IO | CONF_AUTO_SET_IOMEM |
+ CONF_ENABLE_IRQ;
+
+ ret = pcmcia_loop_config(link, ipwireless_probe, ipw);
+ if (ret != 0)
+ return ret;
+
+ INIT_WORK(&ipw->work_reboot, signalled_reboot_work);
+
+ ipwireless_init_hardware_v1(ipw->hardware, link->resource[0]->start,
+ ipw->attr_memory, ipw->common_memory,
+ ipw->is_v2_card, signalled_reboot_callback,
+ ipw);
+
+ ret = pcmcia_request_irq(link, ipwireless_interrupt);
+ if (ret != 0)
+ goto exit;
+
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME ": Card type %s\n",
+ ipw->is_v2_card ? "V2/V3" : "V1");
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME
+ ": I/O ports %pR, irq %d\n", link->resource[0],
+ (unsigned int) link->irq);
+ if (ipw->attr_memory && ipw->common_memory)
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME
+ ": attr memory %pR, common memory %pR\n",
+ link->resource[3],
+ link->resource[2]);
+
+ ipw->network = ipwireless_network_create(ipw->hardware);
+ if (!ipw->network)
+ goto exit;
+
+ ipw->tty = ipwireless_tty_create(ipw->hardware, ipw->network);
+ if (!ipw->tty)
+ goto exit;
+
+ ipwireless_init_hardware_v2_v3(ipw->hardware);
+
+ /*
+ * Do the RequestConfiguration last, because it enables interrupts.
+ * Then we don't get any interrupts before we're ready for them.
+ */
+ ret = pcmcia_enable_device(link);
+ if (ret != 0)
+ goto exit;
+
+ return 0;
+
+exit:
+ if (ipw->common_memory) {
+ release_mem_region(link->resource[2]->start,
+ resource_size(link->resource[2]));
+ iounmap(ipw->common_memory);
+ }
+ if (ipw->attr_memory) {
+ release_mem_region(link->resource[3]->start,
+ resource_size(link->resource[3]));
+ iounmap(ipw->attr_memory);
+ }
+ pcmcia_disable_device(link);
+ return -1;
+}
+
+static void release_ipwireless(struct ipw_dev *ipw)
+{
+ if (ipw->common_memory) {
+ release_mem_region(ipw->link->resource[2]->start,
+ resource_size(ipw->link->resource[2]));
+ iounmap(ipw->common_memory);
+ }
+ if (ipw->attr_memory) {
+ release_mem_region(ipw->link->resource[3]->start,
+ resource_size(ipw->link->resource[3]));
+ iounmap(ipw->attr_memory);
+ }
+ pcmcia_disable_device(ipw->link);
+}
+
+/*
+ * ipwireless_attach() creates an "instance" of the driver, allocating
+ * local data structures for one device (one interface). The device
+ * is registered with Card Services.
+ *
+ * The pcmcia_device structure is initialized, but we don't actually
+ * configure the card at this point -- we wait until we receive a
+ * card insertion event.
+ */
+static int ipwireless_attach(struct pcmcia_device *link)
+{
+ struct ipw_dev *ipw;
+ int ret;
+
+ ipw = kzalloc(sizeof(struct ipw_dev), GFP_KERNEL);
+ if (!ipw)
+ return -ENOMEM;
+
+ ipw->link = link;
+ link->priv = ipw;
+
+ ipw->hardware = ipwireless_hardware_create();
+ if (!ipw->hardware) {
+ kfree(ipw);
+ return -ENOMEM;
+ }
+ /* RegisterClient will call config_ipwireless */
+
+ ret = config_ipwireless(ipw);
+
+ if (ret != 0) {
+ ipwireless_detach(link);
+ return ret;
+ }
+
+ return 0;
+}
+
+/*
+ * This deletes a driver "instance". The device is de-registered with
+ * Card Services. If it has been released, all local data structures
+ * are freed. Otherwise, the structures will be freed when the device
+ * is released.
+ */
+static void ipwireless_detach(struct pcmcia_device *link)
+{
+ struct ipw_dev *ipw = link->priv;
+
+ release_ipwireless(ipw);
+
+ if (ipw->tty != NULL)
+ ipwireless_tty_free(ipw->tty);
+ if (ipw->network != NULL)
+ ipwireless_network_free(ipw->network);
+ if (ipw->hardware != NULL)
+ ipwireless_hardware_free(ipw->hardware);
+ kfree(ipw);
+}
+
+static struct pcmcia_driver me = {
+ .owner = THIS_MODULE,
+ .probe = ipwireless_attach,
+ .remove = ipwireless_detach,
+ .name = IPWIRELESS_PCCARD_NAME,
+ .id_table = ipw_ids
+};
+
+/*
+ * Module insertion : initialisation of the module.
+ * Register the card with cardmgr...
+ */
+static int __init init_ipwireless(void)
+{
+ int ret;
+
+ ret = ipwireless_tty_init();
+ if (ret != 0)
+ return ret;
+
+ ret = pcmcia_register_driver(&me);
+ if (ret != 0)
+ ipwireless_tty_release();
+
+ return ret;
+}
+
+/*
+ * Module removal
+ */
+static void __exit exit_ipwireless(void)
+{
+ pcmcia_unregister_driver(&me);
+ ipwireless_tty_release();
+}
+
+module_init(init_ipwireless);
+module_exit(exit_ipwireless);
+
+MODULE_AUTHOR(IPWIRELESS_PCMCIA_AUTHOR);
+MODULE_DESCRIPTION(IPWIRELESS_PCCARD_NAME " " IPWIRELESS_PCMCIA_VERSION);
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * IPWireless 3G PCMCIA Network Driver
+ *
+ * Original code
+ * by Stephen Blackheath <stephen@blacksapphire.com>,
+ * Ben Martel <benm@symmetric.co.nz>
+ *
+ * Copyrighted as follows:
+ * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
+ *
+ * Various driver changes and rewrites, port to new kernels
+ * Copyright (C) 2006-2007 Jiri Kosina
+ *
+ * Misc code cleanups and updates
+ * Copyright (C) 2007 David Sterba
+ */
+
+#ifndef _IPWIRELESS_CS_H_
+#define _IPWIRELESS_CS_H_
+
+#include <linux/sched.h>
+#include <linux/types.h>
+
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+
+#include "hardware.h"
+
+#define IPWIRELESS_PCCARD_NAME "ipwireless"
+#define IPWIRELESS_PCMCIA_VERSION "1.1"
+#define IPWIRELESS_PCMCIA_AUTHOR \
+ "Stephen Blackheath, Ben Martel, Jiri Kosina and David Sterba"
+
+#define IPWIRELESS_TX_QUEUE_SIZE 262144
+#define IPWIRELESS_RX_QUEUE_SIZE 262144
+
+#define IPWIRELESS_STATE_DEBUG
+
+struct ipw_hardware;
+struct ipw_network;
+struct ipw_tty;
+
+struct ipw_dev {
+ struct pcmcia_device *link;
+ int is_v2_card;
+
+ void __iomem *attr_memory;
+
+ void __iomem *common_memory;
+
+ /* Reference to attribute memory, containing CIS data */
+ void *attribute_memory;
+
+ /* Hardware context */
+ struct ipw_hardware *hardware;
+ /* Network layer context */
+ struct ipw_network *network;
+ /* TTY device context */
+ struct ipw_tty *tty;
+ struct work_struct work_reboot;
+};
+
+/* Module parametres */
+extern int ipwireless_debug;
+extern int ipwireless_loopback;
+extern int ipwireless_out_queue;
+
+#endif
--- /dev/null
+/*
+ * IPWireless 3G PCMCIA Network Driver
+ *
+ * Original code
+ * by Stephen Blackheath <stephen@blacksapphire.com>,
+ * Ben Martel <benm@symmetric.co.nz>
+ *
+ * Copyrighted as follows:
+ * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
+ *
+ * Various driver changes and rewrites, port to new kernels
+ * Copyright (C) 2006-2007 Jiri Kosina
+ *
+ * Misc code cleanups and updates
+ * Copyright (C) 2007 David Sterba
+ */
+
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/mutex.h>
+#include <linux/netdevice.h>
+#include <linux/ppp_channel.h>
+#include <linux/ppp_defs.h>
+#include <linux/slab.h>
+#include <linux/if_ppp.h>
+#include <linux/skbuff.h>
+
+#include "network.h"
+#include "hardware.h"
+#include "main.h"
+#include "tty.h"
+
+#define MAX_ASSOCIATED_TTYS 2
+
+#define SC_RCV_BITS (SC_RCV_B7_1|SC_RCV_B7_0|SC_RCV_ODDP|SC_RCV_EVNP)
+
+struct ipw_network {
+ /* Hardware context, used for calls to hardware layer. */
+ struct ipw_hardware *hardware;
+ /* Context for kernel 'generic_ppp' functionality */
+ struct ppp_channel *ppp_channel;
+ /* tty context connected with IPW console */
+ struct ipw_tty *associated_ttys[NO_OF_IPW_CHANNELS][MAX_ASSOCIATED_TTYS];
+ /* True if ppp needs waking up once we're ready to xmit */
+ int ppp_blocked;
+ /* Number of packets queued up in hardware module. */
+ int outgoing_packets_queued;
+ /* Spinlock to avoid interrupts during shutdown */
+ spinlock_t lock;
+ struct mutex close_lock;
+
+ /* PPP ioctl data, not actually used anywere */
+ unsigned int flags;
+ unsigned int rbits;
+ u32 xaccm[8];
+ u32 raccm;
+ int mru;
+
+ int shutting_down;
+ unsigned int ras_control_lines;
+
+ struct work_struct work_go_online;
+ struct work_struct work_go_offline;
+};
+
+static void notify_packet_sent(void *callback_data, unsigned int packet_length)
+{
+ struct ipw_network *network = callback_data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&network->lock, flags);
+ network->outgoing_packets_queued--;
+ if (network->ppp_channel != NULL) {
+ if (network->ppp_blocked) {
+ network->ppp_blocked = 0;
+ spin_unlock_irqrestore(&network->lock, flags);
+ ppp_output_wakeup(network->ppp_channel);
+ if (ipwireless_debug)
+ printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
+ ": ppp unblocked\n");
+ } else
+ spin_unlock_irqrestore(&network->lock, flags);
+ } else
+ spin_unlock_irqrestore(&network->lock, flags);
+}
+
+/*
+ * Called by the ppp system when it has a packet to send to the hardware.
+ */
+static int ipwireless_ppp_start_xmit(struct ppp_channel *ppp_channel,
+ struct sk_buff *skb)
+{
+ struct ipw_network *network = ppp_channel->private;
+ unsigned long flags;
+
+ spin_lock_irqsave(&network->lock, flags);
+ if (network->outgoing_packets_queued < ipwireless_out_queue) {
+ unsigned char *buf;
+ static unsigned char header[] = {
+ PPP_ALLSTATIONS, /* 0xff */
+ PPP_UI, /* 0x03 */
+ };
+ int ret;
+
+ network->outgoing_packets_queued++;
+ spin_unlock_irqrestore(&network->lock, flags);
+
+ /*
+ * If we have the requested amount of headroom in the skb we
+ * were handed, then we can add the header efficiently.
+ */
+ if (skb_headroom(skb) >= 2) {
+ memcpy(skb_push(skb, 2), header, 2);
+ ret = ipwireless_send_packet(network->hardware,
+ IPW_CHANNEL_RAS, skb->data,
+ skb->len,
+ notify_packet_sent,
+ network);
+ if (ret == -1) {
+ skb_pull(skb, 2);
+ return 0;
+ }
+ } else {
+ /* Otherwise (rarely) we do it inefficiently. */
+ buf = kmalloc(skb->len + 2, GFP_ATOMIC);
+ if (!buf)
+ return 0;
+ memcpy(buf + 2, skb->data, skb->len);
+ memcpy(buf, header, 2);
+ ret = ipwireless_send_packet(network->hardware,
+ IPW_CHANNEL_RAS, buf,
+ skb->len + 2,
+ notify_packet_sent,
+ network);
+ kfree(buf);
+ if (ret == -1)
+ return 0;
+ }
+ kfree_skb(skb);
+ return 1;
+ } else {
+ /*
+ * Otherwise reject the packet, and flag that the ppp system
+ * needs to be unblocked once we are ready to send.
+ */
+ network->ppp_blocked = 1;
+ spin_unlock_irqrestore(&network->lock, flags);
+ if (ipwireless_debug)
+ printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME ": ppp blocked\n");
+ return 0;
+ }
+}
+
+/* Handle an ioctl call that has come in via ppp. (copy of ppp_async_ioctl() */
+static int ipwireless_ppp_ioctl(struct ppp_channel *ppp_channel,
+ unsigned int cmd, unsigned long arg)
+{
+ struct ipw_network *network = ppp_channel->private;
+ int err, val;
+ u32 accm[8];
+ int __user *user_arg = (int __user *) arg;
+
+ err = -EFAULT;
+ switch (cmd) {
+ case PPPIOCGFLAGS:
+ val = network->flags | network->rbits;
+ if (put_user(val, user_arg))
+ break;
+ err = 0;
+ break;
+
+ case PPPIOCSFLAGS:
+ if (get_user(val, user_arg))
+ break;
+ network->flags = val & ~SC_RCV_BITS;
+ network->rbits = val & SC_RCV_BITS;
+ err = 0;
+ break;
+
+ case PPPIOCGASYNCMAP:
+ if (put_user(network->xaccm[0], user_arg))
+ break;
+ err = 0;
+ break;
+
+ case PPPIOCSASYNCMAP:
+ if (get_user(network->xaccm[0], user_arg))
+ break;
+ err = 0;
+ break;
+
+ case PPPIOCGRASYNCMAP:
+ if (put_user(network->raccm, user_arg))
+ break;
+ err = 0;
+ break;
+
+ case PPPIOCSRASYNCMAP:
+ if (get_user(network->raccm, user_arg))
+ break;
+ err = 0;
+ break;
+
+ case PPPIOCGXASYNCMAP:
+ if (copy_to_user((void __user *) arg, network->xaccm,
+ sizeof(network->xaccm)))
+ break;
+ err = 0;
+ break;
+
+ case PPPIOCSXASYNCMAP:
+ if (copy_from_user(accm, (void __user *) arg, sizeof(accm)))
+ break;
+ accm[2] &= ~0x40000000U; /* can't escape 0x5e */
+ accm[3] |= 0x60000000U; /* must escape 0x7d, 0x7e */
+ memcpy(network->xaccm, accm, sizeof(network->xaccm));
+ err = 0;
+ break;
+
+ case PPPIOCGMRU:
+ if (put_user(network->mru, user_arg))
+ break;
+ err = 0;
+ break;
+
+ case PPPIOCSMRU:
+ if (get_user(val, user_arg))
+ break;
+ if (val < PPP_MRU)
+ val = PPP_MRU;
+ network->mru = val;
+ err = 0;
+ break;
+
+ default:
+ err = -ENOTTY;
+ }
+
+ return err;
+}
+
+static const struct ppp_channel_ops ipwireless_ppp_channel_ops = {
+ .start_xmit = ipwireless_ppp_start_xmit,
+ .ioctl = ipwireless_ppp_ioctl
+};
+
+static void do_go_online(struct work_struct *work_go_online)
+{
+ struct ipw_network *network =
+ container_of(work_go_online, struct ipw_network,
+ work_go_online);
+ unsigned long flags;
+
+ spin_lock_irqsave(&network->lock, flags);
+ if (!network->ppp_channel) {
+ struct ppp_channel *channel;
+
+ spin_unlock_irqrestore(&network->lock, flags);
+ channel = kzalloc(sizeof(struct ppp_channel), GFP_KERNEL);
+ if (!channel) {
+ printk(KERN_ERR IPWIRELESS_PCCARD_NAME
+ ": unable to allocate PPP channel\n");
+ return;
+ }
+ channel->private = network;
+ channel->mtu = 16384; /* Wild guess */
+ channel->hdrlen = 2;
+ channel->ops = &ipwireless_ppp_channel_ops;
+
+ network->flags = 0;
+ network->rbits = 0;
+ network->mru = PPP_MRU;
+ memset(network->xaccm, 0, sizeof(network->xaccm));
+ network->xaccm[0] = ~0U;
+ network->xaccm[3] = 0x60000000U;
+ network->raccm = ~0U;
+ ppp_register_channel(channel);
+ spin_lock_irqsave(&network->lock, flags);
+ network->ppp_channel = channel;
+ }
+ spin_unlock_irqrestore(&network->lock, flags);
+}
+
+static void do_go_offline(struct work_struct *work_go_offline)
+{
+ struct ipw_network *network =
+ container_of(work_go_offline, struct ipw_network,
+ work_go_offline);
+ unsigned long flags;
+
+ mutex_lock(&network->close_lock);
+ spin_lock_irqsave(&network->lock, flags);
+ if (network->ppp_channel != NULL) {
+ struct ppp_channel *channel = network->ppp_channel;
+
+ network->ppp_channel = NULL;
+ spin_unlock_irqrestore(&network->lock, flags);
+ mutex_unlock(&network->close_lock);
+ ppp_unregister_channel(channel);
+ } else {
+ spin_unlock_irqrestore(&network->lock, flags);
+ mutex_unlock(&network->close_lock);
+ }
+}
+
+void ipwireless_network_notify_control_line_change(struct ipw_network *network,
+ unsigned int channel_idx,
+ unsigned int control_lines,
+ unsigned int changed_mask)
+{
+ int i;
+
+ if (channel_idx == IPW_CHANNEL_RAS)
+ network->ras_control_lines = control_lines;
+
+ for (i = 0; i < MAX_ASSOCIATED_TTYS; i++) {
+ struct ipw_tty *tty =
+ network->associated_ttys[channel_idx][i];
+
+ /*
+ * If it's associated with a tty (other than the RAS channel
+ * when we're online), then send the data to that tty. The RAS
+ * channel's data is handled above - it always goes through
+ * ppp_generic.
+ */
+ if (tty)
+ ipwireless_tty_notify_control_line_change(tty,
+ channel_idx,
+ control_lines,
+ changed_mask);
+ }
+}
+
+/*
+ * Some versions of firmware stuff packets with 0xff 0x03 (PPP: ALLSTATIONS, UI)
+ * bytes, which are required on sent packet, but not always present on received
+ * packets
+ */
+static struct sk_buff *ipw_packet_received_skb(unsigned char *data,
+ unsigned int length)
+{
+ struct sk_buff *skb;
+
+ if (length > 2 && data[0] == PPP_ALLSTATIONS && data[1] == PPP_UI) {
+ length -= 2;
+ data += 2;
+ }
+
+ skb = dev_alloc_skb(length + 4);
+ skb_reserve(skb, 2);
+ memcpy(skb_put(skb, length), data, length);
+
+ return skb;
+}
+
+void ipwireless_network_packet_received(struct ipw_network *network,
+ unsigned int channel_idx,
+ unsigned char *data,
+ unsigned int length)
+{
+ int i;
+ unsigned long flags;
+
+ for (i = 0; i < MAX_ASSOCIATED_TTYS; i++) {
+ struct ipw_tty *tty = network->associated_ttys[channel_idx][i];
+
+ if (!tty)
+ continue;
+
+ /*
+ * If it's associated with a tty (other than the RAS channel
+ * when we're online), then send the data to that tty. The RAS
+ * channel's data is handled above - it always goes through
+ * ppp_generic.
+ */
+ if (channel_idx == IPW_CHANNEL_RAS
+ && (network->ras_control_lines &
+ IPW_CONTROL_LINE_DCD) != 0
+ && ipwireless_tty_is_modem(tty)) {
+ /*
+ * If data came in on the RAS channel and this tty is
+ * the modem tty, and we are online, then we send it to
+ * the PPP layer.
+ */
+ mutex_lock(&network->close_lock);
+ spin_lock_irqsave(&network->lock, flags);
+ if (network->ppp_channel != NULL) {
+ struct sk_buff *skb;
+
+ spin_unlock_irqrestore(&network->lock,
+ flags);
+
+ /* Send the data to the ppp_generic module. */
+ skb = ipw_packet_received_skb(data, length);
+ ppp_input(network->ppp_channel, skb);
+ } else
+ spin_unlock_irqrestore(&network->lock,
+ flags);
+ mutex_unlock(&network->close_lock);
+ }
+ /* Otherwise we send it out the tty. */
+ else
+ ipwireless_tty_received(tty, data, length);
+ }
+}
+
+struct ipw_network *ipwireless_network_create(struct ipw_hardware *hw)
+{
+ struct ipw_network *network =
+ kzalloc(sizeof(struct ipw_network), GFP_ATOMIC);
+
+ if (!network)
+ return NULL;
+
+ spin_lock_init(&network->lock);
+ mutex_init(&network->close_lock);
+
+ network->hardware = hw;
+
+ INIT_WORK(&network->work_go_online, do_go_online);
+ INIT_WORK(&network->work_go_offline, do_go_offline);
+
+ ipwireless_associate_network(hw, network);
+
+ return network;
+}
+
+void ipwireless_network_free(struct ipw_network *network)
+{
+ network->shutting_down = 1;
+
+ ipwireless_ppp_close(network);
+ flush_work_sync(&network->work_go_online);
+ flush_work_sync(&network->work_go_offline);
+
+ ipwireless_stop_interrupts(network->hardware);
+ ipwireless_associate_network(network->hardware, NULL);
+
+ kfree(network);
+}
+
+void ipwireless_associate_network_tty(struct ipw_network *network,
+ unsigned int channel_idx,
+ struct ipw_tty *tty)
+{
+ int i;
+
+ for (i = 0; i < MAX_ASSOCIATED_TTYS; i++)
+ if (network->associated_ttys[channel_idx][i] == NULL) {
+ network->associated_ttys[channel_idx][i] = tty;
+ break;
+ }
+}
+
+void ipwireless_disassociate_network_ttys(struct ipw_network *network,
+ unsigned int channel_idx)
+{
+ int i;
+
+ for (i = 0; i < MAX_ASSOCIATED_TTYS; i++)
+ network->associated_ttys[channel_idx][i] = NULL;
+}
+
+void ipwireless_ppp_open(struct ipw_network *network)
+{
+ if (ipwireless_debug)
+ printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME ": online\n");
+ schedule_work(&network->work_go_online);
+}
+
+void ipwireless_ppp_close(struct ipw_network *network)
+{
+ /* Disconnect from the wireless network. */
+ if (ipwireless_debug)
+ printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME ": offline\n");
+ schedule_work(&network->work_go_offline);
+}
+
+int ipwireless_ppp_channel_index(struct ipw_network *network)
+{
+ int ret = -1;
+ unsigned long flags;
+
+ spin_lock_irqsave(&network->lock, flags);
+ if (network->ppp_channel != NULL)
+ ret = ppp_channel_index(network->ppp_channel);
+ spin_unlock_irqrestore(&network->lock, flags);
+
+ return ret;
+}
+
+int ipwireless_ppp_unit_number(struct ipw_network *network)
+{
+ int ret = -1;
+ unsigned long flags;
+
+ spin_lock_irqsave(&network->lock, flags);
+ if (network->ppp_channel != NULL)
+ ret = ppp_unit_number(network->ppp_channel);
+ spin_unlock_irqrestore(&network->lock, flags);
+
+ return ret;
+}
+
+int ipwireless_ppp_mru(const struct ipw_network *network)
+{
+ return network->mru;
+}
--- /dev/null
+/*
+ * IPWireless 3G PCMCIA Network Driver
+ *
+ * Original code
+ * by Stephen Blackheath <stephen@blacksapphire.com>,
+ * Ben Martel <benm@symmetric.co.nz>
+ *
+ * Copyrighted as follows:
+ * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
+ *
+ * Various driver changes and rewrites, port to new kernels
+ * Copyright (C) 2006-2007 Jiri Kosina
+ *
+ * Misc code cleanups and updates
+ * Copyright (C) 2007 David Sterba
+ */
+
+#ifndef _IPWIRELESS_CS_NETWORK_H_
+#define _IPWIRELESS_CS_NETWORK_H_
+
+#include <linux/types.h>
+
+struct ipw_network;
+struct ipw_tty;
+struct ipw_hardware;
+
+/* Definitions of the different channels on the PCMCIA UE */
+#define IPW_CHANNEL_RAS 0
+#define IPW_CHANNEL_DIALLER 1
+#define IPW_CHANNEL_CONSOLE 2
+#define NO_OF_IPW_CHANNELS 5
+
+void ipwireless_network_notify_control_line_change(struct ipw_network *net,
+ unsigned int channel_idx, unsigned int control_lines,
+ unsigned int control_mask);
+void ipwireless_network_packet_received(struct ipw_network *net,
+ unsigned int channel_idx, unsigned char *data,
+ unsigned int length);
+struct ipw_network *ipwireless_network_create(struct ipw_hardware *hw);
+void ipwireless_network_free(struct ipw_network *net);
+void ipwireless_associate_network_tty(struct ipw_network *net,
+ unsigned int channel_idx, struct ipw_tty *tty);
+void ipwireless_disassociate_network_ttys(struct ipw_network *net,
+ unsigned int channel_idx);
+
+void ipwireless_ppp_open(struct ipw_network *net);
+
+void ipwireless_ppp_close(struct ipw_network *net);
+int ipwireless_ppp_channel_index(struct ipw_network *net);
+int ipwireless_ppp_unit_number(struct ipw_network *net);
+int ipwireless_ppp_mru(const struct ipw_network *net);
+
+#endif
--- /dev/null
+/*
+ * IPWireless 3G PCMCIA Network Driver
+ *
+ * Original code
+ * by Stephen Blackheath <stephen@blacksapphire.com>,
+ * Ben Martel <benm@symmetric.co.nz>
+ *
+ * Copyrighted as follows:
+ * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
+ *
+ * Various driver changes and rewrites, port to new kernels
+ * Copyright (C) 2006-2007 Jiri Kosina
+ *
+ * Misc code cleanups and updates
+ * Copyright (C) 2007 David Sterba
+ */
+
+#ifndef _IPWIRELESS_CS_SETUP_PROTOCOL_H_
+#define _IPWIRELESS_CS_SETUP_PROTOCOL_H_
+
+/* Version of the setup protocol and transport protocols */
+#define TL_SETUP_VERSION 1
+
+#define TL_SETUP_VERSION_QRY_TMO 1000
+#define TL_SETUP_MAX_VERSION_QRY 30
+
+/* Message numbers 0-9 are obsoleted and must not be reused! */
+#define TL_SETUP_SIGNO_GET_VERSION_QRY 10
+#define TL_SETUP_SIGNO_GET_VERSION_RSP 11
+#define TL_SETUP_SIGNO_CONFIG_MSG 12
+#define TL_SETUP_SIGNO_CONFIG_DONE_MSG 13
+#define TL_SETUP_SIGNO_OPEN_MSG 14
+#define TL_SETUP_SIGNO_CLOSE_MSG 15
+
+#define TL_SETUP_SIGNO_INFO_MSG 20
+#define TL_SETUP_SIGNO_INFO_MSG_ACK 21
+
+#define TL_SETUP_SIGNO_REBOOT_MSG 22
+#define TL_SETUP_SIGNO_REBOOT_MSG_ACK 23
+
+/* Synchronous start-messages */
+struct tl_setup_get_version_qry {
+ unsigned char sig_no; /* TL_SETUP_SIGNO_GET_VERSION_QRY */
+} __attribute__ ((__packed__));
+
+struct tl_setup_get_version_rsp {
+ unsigned char sig_no; /* TL_SETUP_SIGNO_GET_VERSION_RSP */
+ unsigned char version; /* TL_SETUP_VERSION */
+} __attribute__ ((__packed__));
+
+struct tl_setup_config_msg {
+ unsigned char sig_no; /* TL_SETUP_SIGNO_CONFIG_MSG */
+ unsigned char port_no;
+ unsigned char prio_data;
+ unsigned char prio_ctrl;
+} __attribute__ ((__packed__));
+
+struct tl_setup_config_done_msg {
+ unsigned char sig_no; /* TL_SETUP_SIGNO_CONFIG_DONE_MSG */
+} __attribute__ ((__packed__));
+
+/* Asyncronous messages */
+struct tl_setup_open_msg {
+ unsigned char sig_no; /* TL_SETUP_SIGNO_OPEN_MSG */
+ unsigned char port_no;
+} __attribute__ ((__packed__));
+
+struct tl_setup_close_msg {
+ unsigned char sig_no; /* TL_SETUP_SIGNO_CLOSE_MSG */
+ unsigned char port_no;
+} __attribute__ ((__packed__));
+
+/* Driver type - for use in tl_setup_info_msg.driver_type */
+#define COMM_DRIVER 0
+#define NDISWAN_DRIVER 1
+#define NDISWAN_DRIVER_MAJOR_VERSION 2
+#define NDISWAN_DRIVER_MINOR_VERSION 0
+
+/*
+ * It should not matter when this message comes over as we just store the
+ * results and send the ACK.
+ */
+struct tl_setup_info_msg {
+ unsigned char sig_no; /* TL_SETUP_SIGNO_INFO_MSG */
+ unsigned char driver_type;
+ unsigned char major_version;
+ unsigned char minor_version;
+} __attribute__ ((__packed__));
+
+struct tl_setup_info_msgAck {
+ unsigned char sig_no; /* TL_SETUP_SIGNO_INFO_MSG_ACK */
+} __attribute__ ((__packed__));
+
+struct TlSetupRebootMsgAck {
+ unsigned char sig_no; /* TL_SETUP_SIGNO_REBOOT_MSG_ACK */
+} __attribute__ ((__packed__));
+
+/* Define a union of all the msgs that the driver can receive from the card.*/
+union ipw_setup_rx_msg {
+ unsigned char sig_no;
+ struct tl_setup_get_version_rsp version_rsp_msg;
+ struct tl_setup_open_msg open_msg;
+ struct tl_setup_close_msg close_msg;
+ struct tl_setup_info_msg InfoMsg;
+ struct tl_setup_info_msgAck info_msg_ack;
+} __attribute__ ((__packed__));
+
+#endif /* _IPWIRELESS_CS_SETUP_PROTOCOL_H_ */
--- /dev/null
+/*
+ * IPWireless 3G PCMCIA Network Driver
+ *
+ * Original code
+ * by Stephen Blackheath <stephen@blacksapphire.com>,
+ * Ben Martel <benm@symmetric.co.nz>
+ *
+ * Copyrighted as follows:
+ * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
+ *
+ * Various driver changes and rewrites, port to new kernels
+ * Copyright (C) 2006-2007 Jiri Kosina
+ *
+ * Misc code cleanups and updates
+ * Copyright (C) 2007 David Sterba
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/ppp_defs.h>
+#include <linux/if.h>
+#include <linux/if_ppp.h>
+#include <linux/sched.h>
+#include <linux/serial.h>
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/tty_driver.h>
+#include <linux/tty_flip.h>
+#include <linux/uaccess.h>
+
+#include "tty.h"
+#include "network.h"
+#include "hardware.h"
+#include "main.h"
+
+#define IPWIRELESS_PCMCIA_START (0)
+#define IPWIRELESS_PCMCIA_MINORS (24)
+#define IPWIRELESS_PCMCIA_MINOR_RANGE (8)
+
+#define TTYTYPE_MODEM (0)
+#define TTYTYPE_MONITOR (1)
+#define TTYTYPE_RAS_RAW (2)
+
+struct ipw_tty {
+ int index;
+ struct ipw_hardware *hardware;
+ unsigned int channel_idx;
+ unsigned int secondary_channel_idx;
+ int tty_type;
+ struct ipw_network *network;
+ struct tty_struct *linux_tty;
+ int open_count;
+ unsigned int control_lines;
+ struct mutex ipw_tty_mutex;
+ int tx_bytes_queued;
+ int closing;
+};
+
+static struct ipw_tty *ttys[IPWIRELESS_PCMCIA_MINORS];
+
+static struct tty_driver *ipw_tty_driver;
+
+static char *tty_type_name(int tty_type)
+{
+ static char *channel_names[] = {
+ "modem",
+ "monitor",
+ "RAS-raw"
+ };
+
+ return channel_names[tty_type];
+}
+
+static void report_registering(struct ipw_tty *tty)
+{
+ char *iftype = tty_type_name(tty->tty_type);
+
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME
+ ": registering %s device ttyIPWp%d\n", iftype, tty->index);
+}
+
+static void report_deregistering(struct ipw_tty *tty)
+{
+ char *iftype = tty_type_name(tty->tty_type);
+
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME
+ ": deregistering %s device ttyIPWp%d\n", iftype,
+ tty->index);
+}
+
+static struct ipw_tty *get_tty(int minor)
+{
+ if (minor < ipw_tty_driver->minor_start
+ || minor >= ipw_tty_driver->minor_start +
+ IPWIRELESS_PCMCIA_MINORS)
+ return NULL;
+ else {
+ int minor_offset = minor - ipw_tty_driver->minor_start;
+
+ /*
+ * The 'ras_raw' channel is only available when 'loopback' mode
+ * is enabled.
+ * Number of minor starts with 16 (_RANGE * _RAS_RAW).
+ */
+ if (!ipwireless_loopback &&
+ minor_offset >=
+ IPWIRELESS_PCMCIA_MINOR_RANGE * TTYTYPE_RAS_RAW)
+ return NULL;
+
+ return ttys[minor_offset];
+ }
+}
+
+static int ipw_open(struct tty_struct *linux_tty, struct file *filp)
+{
+ int minor = linux_tty->index;
+ struct ipw_tty *tty = get_tty(minor);
+
+ if (!tty)
+ return -ENODEV;
+
+ mutex_lock(&tty->ipw_tty_mutex);
+
+ if (tty->closing) {
+ mutex_unlock(&tty->ipw_tty_mutex);
+ return -ENODEV;
+ }
+ if (tty->open_count == 0)
+ tty->tx_bytes_queued = 0;
+
+ tty->open_count++;
+
+ tty->linux_tty = linux_tty;
+ linux_tty->driver_data = tty;
+ linux_tty->low_latency = 1;
+
+ if (tty->tty_type == TTYTYPE_MODEM)
+ ipwireless_ppp_open(tty->network);
+
+ mutex_unlock(&tty->ipw_tty_mutex);
+
+ return 0;
+}
+
+static void do_ipw_close(struct ipw_tty *tty)
+{
+ tty->open_count--;
+
+ if (tty->open_count == 0) {
+ struct tty_struct *linux_tty = tty->linux_tty;
+
+ if (linux_tty != NULL) {
+ tty->linux_tty = NULL;
+ linux_tty->driver_data = NULL;
+
+ if (tty->tty_type == TTYTYPE_MODEM)
+ ipwireless_ppp_close(tty->network);
+ }
+ }
+}
+
+static void ipw_hangup(struct tty_struct *linux_tty)
+{
+ struct ipw_tty *tty = linux_tty->driver_data;
+
+ if (!tty)
+ return;
+
+ mutex_lock(&tty->ipw_tty_mutex);
+ if (tty->open_count == 0) {
+ mutex_unlock(&tty->ipw_tty_mutex);
+ return;
+ }
+
+ do_ipw_close(tty);
+
+ mutex_unlock(&tty->ipw_tty_mutex);
+}
+
+static void ipw_close(struct tty_struct *linux_tty, struct file *filp)
+{
+ ipw_hangup(linux_tty);
+}
+
+/* Take data received from hardware, and send it out the tty */
+void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data,
+ unsigned int length)
+{
+ struct tty_struct *linux_tty;
+ int work = 0;
+
+ mutex_lock(&tty->ipw_tty_mutex);
+ linux_tty = tty->linux_tty;
+ if (linux_tty == NULL) {
+ mutex_unlock(&tty->ipw_tty_mutex);
+ return;
+ }
+
+ if (!tty->open_count) {
+ mutex_unlock(&tty->ipw_tty_mutex);
+ return;
+ }
+ mutex_unlock(&tty->ipw_tty_mutex);
+
+ work = tty_insert_flip_string(linux_tty, data, length);
+
+ if (work != length)
+ printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
+ ": %d chars not inserted to flip buffer!\n",
+ length - work);
+
+ /*
+ * This may sleep if ->low_latency is set
+ */
+ if (work)
+ tty_flip_buffer_push(linux_tty);
+}
+
+static void ipw_write_packet_sent_callback(void *callback_data,
+ unsigned int packet_length)
+{
+ struct ipw_tty *tty = callback_data;
+
+ /*
+ * Packet has been sent, so we subtract the number of bytes from our
+ * tally of outstanding TX bytes.
+ */
+ tty->tx_bytes_queued -= packet_length;
+}
+
+static int ipw_write(struct tty_struct *linux_tty,
+ const unsigned char *buf, int count)
+{
+ struct ipw_tty *tty = linux_tty->driver_data;
+ int room, ret;
+
+ if (!tty)
+ return -ENODEV;
+
+ mutex_lock(&tty->ipw_tty_mutex);
+ if (!tty->open_count) {
+ mutex_unlock(&tty->ipw_tty_mutex);
+ return -EINVAL;
+ }
+
+ room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued;
+ if (room < 0)
+ room = 0;
+ /* Don't allow caller to write any more than we have room for */
+ if (count > room)
+ count = room;
+
+ if (count == 0) {
+ mutex_unlock(&tty->ipw_tty_mutex);
+ return 0;
+ }
+
+ ret = ipwireless_send_packet(tty->hardware, IPW_CHANNEL_RAS,
+ buf, count,
+ ipw_write_packet_sent_callback, tty);
+ if (ret == -1) {
+ mutex_unlock(&tty->ipw_tty_mutex);
+ return 0;
+ }
+
+ tty->tx_bytes_queued += count;
+ mutex_unlock(&tty->ipw_tty_mutex);
+
+ return count;
+}
+
+static int ipw_write_room(struct tty_struct *linux_tty)
+{
+ struct ipw_tty *tty = linux_tty->driver_data;
+ int room;
+
+ /* FIXME: Exactly how is the tty object locked here .. */
+ if (!tty)
+ return -ENODEV;
+
+ if (!tty->open_count)
+ return -EINVAL;
+
+ room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued;
+ if (room < 0)
+ room = 0;
+
+ return room;
+}
+
+static int ipwireless_get_serial_info(struct ipw_tty *tty,
+ struct serial_struct __user *retinfo)
+{
+ struct serial_struct tmp;
+
+ if (!retinfo)
+ return (-EFAULT);
+
+ memset(&tmp, 0, sizeof(tmp));
+ tmp.type = PORT_UNKNOWN;
+ tmp.line = tty->index;
+ tmp.port = 0;
+ tmp.irq = 0;
+ tmp.flags = 0;
+ tmp.baud_base = 115200;
+ tmp.close_delay = 0;
+ tmp.closing_wait = 0;
+ tmp.custom_divisor = 0;
+ tmp.hub6 = 0;
+ if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
+ return -EFAULT;
+
+ return 0;
+}
+
+static int ipw_chars_in_buffer(struct tty_struct *linux_tty)
+{
+ struct ipw_tty *tty = linux_tty->driver_data;
+
+ if (!tty)
+ return 0;
+
+ if (!tty->open_count)
+ return 0;
+
+ return tty->tx_bytes_queued;
+}
+
+static int get_control_lines(struct ipw_tty *tty)
+{
+ unsigned int my = tty->control_lines;
+ unsigned int out = 0;
+
+ if (my & IPW_CONTROL_LINE_RTS)
+ out |= TIOCM_RTS;
+ if (my & IPW_CONTROL_LINE_DTR)
+ out |= TIOCM_DTR;
+ if (my & IPW_CONTROL_LINE_CTS)
+ out |= TIOCM_CTS;
+ if (my & IPW_CONTROL_LINE_DSR)
+ out |= TIOCM_DSR;
+ if (my & IPW_CONTROL_LINE_DCD)
+ out |= TIOCM_CD;
+
+ return out;
+}
+
+static int set_control_lines(struct ipw_tty *tty, unsigned int set,
+ unsigned int clear)
+{
+ int ret;
+
+ if (set & TIOCM_RTS) {
+ ret = ipwireless_set_RTS(tty->hardware, tty->channel_idx, 1);
+ if (ret)
+ return ret;
+ if (tty->secondary_channel_idx != -1) {
+ ret = ipwireless_set_RTS(tty->hardware,
+ tty->secondary_channel_idx, 1);
+ if (ret)
+ return ret;
+ }
+ }
+ if (set & TIOCM_DTR) {
+ ret = ipwireless_set_DTR(tty->hardware, tty->channel_idx, 1);
+ if (ret)
+ return ret;
+ if (tty->secondary_channel_idx != -1) {
+ ret = ipwireless_set_DTR(tty->hardware,
+ tty->secondary_channel_idx, 1);
+ if (ret)
+ return ret;
+ }
+ }
+ if (clear & TIOCM_RTS) {
+ ret = ipwireless_set_RTS(tty->hardware, tty->channel_idx, 0);
+ if (tty->secondary_channel_idx != -1) {
+ ret = ipwireless_set_RTS(tty->hardware,
+ tty->secondary_channel_idx, 0);
+ if (ret)
+ return ret;
+ }
+ }
+ if (clear & TIOCM_DTR) {
+ ret = ipwireless_set_DTR(tty->hardware, tty->channel_idx, 0);
+ if (tty->secondary_channel_idx != -1) {
+ ret = ipwireless_set_DTR(tty->hardware,
+ tty->secondary_channel_idx, 0);
+ if (ret)
+ return ret;
+ }
+ }
+ return 0;
+}
+
+static int ipw_tiocmget(struct tty_struct *linux_tty)
+{
+ struct ipw_tty *tty = linux_tty->driver_data;
+ /* FIXME: Exactly how is the tty object locked here .. */
+
+ if (!tty)
+ return -ENODEV;
+
+ if (!tty->open_count)
+ return -EINVAL;
+
+ return get_control_lines(tty);
+}
+
+static int
+ipw_tiocmset(struct tty_struct *linux_tty,
+ unsigned int set, unsigned int clear)
+{
+ struct ipw_tty *tty = linux_tty->driver_data;
+ /* FIXME: Exactly how is the tty object locked here .. */
+
+ if (!tty)
+ return -ENODEV;
+
+ if (!tty->open_count)
+ return -EINVAL;
+
+ return set_control_lines(tty, set, clear);
+}
+
+static int ipw_ioctl(struct tty_struct *linux_tty,
+ unsigned int cmd, unsigned long arg)
+{
+ struct ipw_tty *tty = linux_tty->driver_data;
+
+ if (!tty)
+ return -ENODEV;
+
+ if (!tty->open_count)
+ return -EINVAL;
+
+ /* FIXME: Exactly how is the tty object locked here .. */
+
+ switch (cmd) {
+ case TIOCGSERIAL:
+ return ipwireless_get_serial_info(tty, (void __user *) arg);
+
+ case TIOCSSERIAL:
+ return 0; /* Keeps the PCMCIA scripts happy. */
+ }
+
+ if (tty->tty_type == TTYTYPE_MODEM) {
+ switch (cmd) {
+ case PPPIOCGCHAN:
+ {
+ int chan = ipwireless_ppp_channel_index(
+ tty->network);
+
+ if (chan < 0)
+ return -ENODEV;
+ if (put_user(chan, (int __user *) arg))
+ return -EFAULT;
+ }
+ return 0;
+
+ case PPPIOCGUNIT:
+ {
+ int unit = ipwireless_ppp_unit_number(
+ tty->network);
+
+ if (unit < 0)
+ return -ENODEV;
+ if (put_user(unit, (int __user *) arg))
+ return -EFAULT;
+ }
+ return 0;
+
+ case FIONREAD:
+ {
+ int val = 0;
+
+ if (put_user(val, (int __user *) arg))
+ return -EFAULT;
+ }
+ return 0;
+ case TCFLSH:
+ return tty_perform_flush(linux_tty, arg);
+ }
+ }
+ return -ENOIOCTLCMD;
+}
+
+static int add_tty(int j,
+ struct ipw_hardware *hardware,
+ struct ipw_network *network, int channel_idx,
+ int secondary_channel_idx, int tty_type)
+{
+ ttys[j] = kzalloc(sizeof(struct ipw_tty), GFP_KERNEL);
+ if (!ttys[j])
+ return -ENOMEM;
+ ttys[j]->index = j;
+ ttys[j]->hardware = hardware;
+ ttys[j]->channel_idx = channel_idx;
+ ttys[j]->secondary_channel_idx = secondary_channel_idx;
+ ttys[j]->network = network;
+ ttys[j]->tty_type = tty_type;
+ mutex_init(&ttys[j]->ipw_tty_mutex);
+
+ tty_register_device(ipw_tty_driver, j, NULL);
+ ipwireless_associate_network_tty(network, channel_idx, ttys[j]);
+
+ if (secondary_channel_idx != -1)
+ ipwireless_associate_network_tty(network,
+ secondary_channel_idx,
+ ttys[j]);
+ if (get_tty(j + ipw_tty_driver->minor_start) == ttys[j])
+ report_registering(ttys[j]);
+ return 0;
+}
+
+struct ipw_tty *ipwireless_tty_create(struct ipw_hardware *hardware,
+ struct ipw_network *network)
+{
+ int i, j;
+
+ for (i = 0; i < IPWIRELESS_PCMCIA_MINOR_RANGE; i++) {
+ int allfree = 1;
+
+ for (j = i; j < IPWIRELESS_PCMCIA_MINORS;
+ j += IPWIRELESS_PCMCIA_MINOR_RANGE)
+ if (ttys[j] != NULL) {
+ allfree = 0;
+ break;
+ }
+
+ if (allfree) {
+ j = i;
+
+ if (add_tty(j, hardware, network,
+ IPW_CHANNEL_DIALLER, IPW_CHANNEL_RAS,
+ TTYTYPE_MODEM))
+ return NULL;
+
+ j += IPWIRELESS_PCMCIA_MINOR_RANGE;
+ if (add_tty(j, hardware, network,
+ IPW_CHANNEL_DIALLER, -1,
+ TTYTYPE_MONITOR))
+ return NULL;
+
+ j += IPWIRELESS_PCMCIA_MINOR_RANGE;
+ if (add_tty(j, hardware, network,
+ IPW_CHANNEL_RAS, -1,
+ TTYTYPE_RAS_RAW))
+ return NULL;
+
+ return ttys[i];
+ }
+ }
+ return NULL;
+}
+
+/*
+ * Must be called before ipwireless_network_free().
+ */
+void ipwireless_tty_free(struct ipw_tty *tty)
+{
+ int j;
+ struct ipw_network *network = ttys[tty->index]->network;
+
+ for (j = tty->index; j < IPWIRELESS_PCMCIA_MINORS;
+ j += IPWIRELESS_PCMCIA_MINOR_RANGE) {
+ struct ipw_tty *ttyj = ttys[j];
+
+ if (ttyj) {
+ mutex_lock(&ttyj->ipw_tty_mutex);
+ if (get_tty(j + ipw_tty_driver->minor_start) == ttyj)
+ report_deregistering(ttyj);
+ ttyj->closing = 1;
+ if (ttyj->linux_tty != NULL) {
+ mutex_unlock(&ttyj->ipw_tty_mutex);
+ tty_hangup(ttyj->linux_tty);
+ /* Wait till the tty_hangup has completed */
+ flush_work_sync(&ttyj->linux_tty->hangup_work);
+ /* FIXME: Exactly how is the tty object locked here
+ against a parallel ioctl etc */
+ mutex_lock(&ttyj->ipw_tty_mutex);
+ }
+ while (ttyj->open_count)
+ do_ipw_close(ttyj);
+ ipwireless_disassociate_network_ttys(network,
+ ttyj->channel_idx);
+ tty_unregister_device(ipw_tty_driver, j);
+ ttys[j] = NULL;
+ mutex_unlock(&ttyj->ipw_tty_mutex);
+ kfree(ttyj);
+ }
+ }
+}
+
+static const struct tty_operations tty_ops = {
+ .open = ipw_open,
+ .close = ipw_close,
+ .hangup = ipw_hangup,
+ .write = ipw_write,
+ .write_room = ipw_write_room,
+ .ioctl = ipw_ioctl,
+ .chars_in_buffer = ipw_chars_in_buffer,
+ .tiocmget = ipw_tiocmget,
+ .tiocmset = ipw_tiocmset,
+};
+
+int ipwireless_tty_init(void)
+{
+ int result;
+
+ ipw_tty_driver = alloc_tty_driver(IPWIRELESS_PCMCIA_MINORS);
+ if (!ipw_tty_driver)
+ return -ENOMEM;
+
+ ipw_tty_driver->owner = THIS_MODULE;
+ ipw_tty_driver->driver_name = IPWIRELESS_PCCARD_NAME;
+ ipw_tty_driver->name = "ttyIPWp";
+ ipw_tty_driver->major = 0;
+ ipw_tty_driver->minor_start = IPWIRELESS_PCMCIA_START;
+ ipw_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
+ ipw_tty_driver->subtype = SERIAL_TYPE_NORMAL;
+ ipw_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
+ ipw_tty_driver->init_termios = tty_std_termios;
+ ipw_tty_driver->init_termios.c_cflag =
+ B9600 | CS8 | CREAD | HUPCL | CLOCAL;
+ ipw_tty_driver->init_termios.c_ispeed = 9600;
+ ipw_tty_driver->init_termios.c_ospeed = 9600;
+ tty_set_operations(ipw_tty_driver, &tty_ops);
+ result = tty_register_driver(ipw_tty_driver);
+ if (result) {
+ printk(KERN_ERR IPWIRELESS_PCCARD_NAME
+ ": failed to register tty driver\n");
+ put_tty_driver(ipw_tty_driver);
+ return result;
+ }
+
+ return 0;
+}
+
+void ipwireless_tty_release(void)
+{
+ int ret;
+
+ ret = tty_unregister_driver(ipw_tty_driver);
+ put_tty_driver(ipw_tty_driver);
+ if (ret != 0)
+ printk(KERN_ERR IPWIRELESS_PCCARD_NAME
+ ": tty_unregister_driver failed with code %d\n", ret);
+}
+
+int ipwireless_tty_is_modem(struct ipw_tty *tty)
+{
+ return tty->tty_type == TTYTYPE_MODEM;
+}
+
+void
+ipwireless_tty_notify_control_line_change(struct ipw_tty *tty,
+ unsigned int channel_idx,
+ unsigned int control_lines,
+ unsigned int changed_mask)
+{
+ unsigned int old_control_lines = tty->control_lines;
+
+ tty->control_lines = (tty->control_lines & ~changed_mask)
+ | (control_lines & changed_mask);
+
+ /*
+ * If DCD is de-asserted, we close the tty so pppd can tell that we
+ * have gone offline.
+ */
+ if ((old_control_lines & IPW_CONTROL_LINE_DCD)
+ && !(tty->control_lines & IPW_CONTROL_LINE_DCD)
+ && tty->linux_tty) {
+ tty_hangup(tty->linux_tty);
+ }
+}
+
--- /dev/null
+/*
+ * IPWireless 3G PCMCIA Network Driver
+ *
+ * Original code
+ * by Stephen Blackheath <stephen@blacksapphire.com>,
+ * Ben Martel <benm@symmetric.co.nz>
+ *
+ * Copyrighted as follows:
+ * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
+ *
+ * Various driver changes and rewrites, port to new kernels
+ * Copyright (C) 2006-2007 Jiri Kosina
+ *
+ * Misc code cleanups and updates
+ * Copyright (C) 2007 David Sterba
+ */
+
+#ifndef _IPWIRELESS_CS_TTY_H_
+#define _IPWIRELESS_CS_TTY_H_
+
+#include <linux/types.h>
+#include <linux/sched.h>
+
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+
+struct ipw_tty;
+struct ipw_network;
+struct ipw_hardware;
+
+int ipwireless_tty_init(void);
+void ipwireless_tty_release(void);
+
+struct ipw_tty *ipwireless_tty_create(struct ipw_hardware *hw,
+ struct ipw_network *net);
+void ipwireless_tty_free(struct ipw_tty *tty);
+void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data,
+ unsigned int length);
+int ipwireless_tty_is_modem(struct ipw_tty *tty);
+void ipwireless_tty_notify_control_line_change(struct ipw_tty *tty,
+ unsigned int channel_idx,
+ unsigned int control_lines,
+ unsigned int changed_mask);
+
+#endif
projects / firefly-linux-kernel-4.4.55.git / commitdiff