ipwireless: driver for PC Card 3G/UMTS modem
David Sterba [Thu, 7 Feb 2008 09:57:12 +0000 (10:57 +0100)]
The device is manufactured by IPWireless.  In some countries (for
example Czech Republic, T-Mobile ISP) this card is shipped for service
called UMTS 4G.

It's a piece of PCMCIA "4G" UMTS PPP networking hardware that presents
itself as a serial character device (i.e.  looks like usual modem to
userspace, accepts AT commands, etc).

Rewieved-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Ben Martel <benm@symmetric.co.nz>
Signed-off-by: Stephen Blackheath <stephen@symmetric.co.nz>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 files changed:
MAINTAINERS
drivers/char/pcmcia/Kconfig
drivers/char/pcmcia/Makefile
drivers/char/pcmcia/ipwireless/Makefile [new file with mode: 0644]
drivers/char/pcmcia/ipwireless/hardware.c [new file with mode: 0644]
drivers/char/pcmcia/ipwireless/hardware.h [new file with mode: 0644]
drivers/char/pcmcia/ipwireless/main.c [new file with mode: 0644]
drivers/char/pcmcia/ipwireless/main.h [new file with mode: 0644]
drivers/char/pcmcia/ipwireless/network.c [new file with mode: 0644]
drivers/char/pcmcia/ipwireless/network.h [new file with mode: 0644]
drivers/char/pcmcia/ipwireless/setup_protocol.h [new file with mode: 0644]
drivers/char/pcmcia/ipwireless/tty.c [new file with mode: 0644]
drivers/char/pcmcia/ipwireless/tty.h [new file with mode: 0644]

index aefd23f..2cdb591 100644 (file)
@@ -2150,6 +2150,14 @@ M:       acme@ghostprotocols.net
 L:     netdev@vger.kernel.org
 S:     Maintained
 
+IPWIRELES DRIVER
+P:     Jiri Kosina
+M:     jkosina@suse.cz
+P:     David Sterba
+M:     dsterba@suse.cz
+S:     Maintained
+T:     git://git.kernel.org/pub/scm/linux/kernel/git/jikos/ipwireless_cs.git
+
 IRDA SUBSYSTEM
 P:     Samuel Ortiz
 M:     samuel@sortiz.org
index f25facd..00b8a84 100644 (file)
@@ -43,5 +43,14 @@ config CARDMAN_4040
          (http://www.omnikey.com/), or a current development version of OpenCT
          (http://www.opensc.org/).
 
+config IPWIRELESS
+       tristate "IPWireless 3G UMTS PCMCIA card support"
+       depends on PCMCIA
+       select PPP
+       help
+         This is a driver for 3G UMTS PCMCIA card from IPWireless company. In
+         some countries (for example Czech Republic, T-Mobile ISP) this card
+         is shipped for service called UMTS 4G.
+
 endmenu
 
index 0aae209..be8f287 100644 (file)
@@ -4,6 +4,8 @@
 # Makefile for the Linux PCMCIA char device drivers.
 #
 
+obj-y += ipwireless/
+
 obj-$(CONFIG_SYNCLINK_CS) += synclink_cs.o
 obj-$(CONFIG_CARDMAN_4000) += cm4000_cs.o
 obj-$(CONFIG_CARDMAN_4040) += cm4040_cs.o
diff --git a/drivers/char/pcmcia/ipwireless/Makefile b/drivers/char/pcmcia/ipwireless/Makefile
new file mode 100644 (file)
index 0000000..b71eb59
--- /dev/null
@@ -0,0 +1,10 @@
+#
+# drivers/char/pcmcia/ipwireless/Makefile
+#
+# Makefile for the IPWireless driver
+#
+
+obj-$(CONFIG_IPWIRELESS) += ipwireless.o
+
+ipwireless-objs := hardware.o main.o network.o tty.o
+
diff --git a/drivers/char/pcmcia/ipwireless/hardware.c b/drivers/char/pcmcia/ipwireless/hardware.c
new file mode 100644 (file)
index 0000000..1f978ff
--- /dev/null
@@ -0,0 +1,1787 @@
+/*
+ * 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,
+                                        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, 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 {
+#if defined(__BIG_ENDIAN_BITFIELD)
+       unsigned char packet_rank:2;
+       unsigned char address:3;
+       unsigned char protocol:3;
+#else
+       unsigned char protocol:3;
+       unsigned char address:3;
+       unsigned char packet_rank:2;
+#endif
+       unsigned char length_lsb;
+       unsigned char length_msb;
+};
+
+struct nl_packet_header {
+#if defined(__BIG_ENDIAN_BITFIELD)
+       unsigned char packet_rank:2;
+       unsigned char address:3;
+       unsigned char protocol:3;
+#else
+       unsigned char protocol:3;
+       unsigned char address:3;
+       unsigned char packet_rank:2;
+#endif
+};
+
+/* 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 IODMADPR 0x00          /* DMA Data Port 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 MEMRX_MEMSPURIOUSINT           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 spinlock;
+
+       int initializing;
+       int init_loops;
+       struct timer_list setup_timer;
+
+       int tx_ready;
+       struct list_head tx_queue[NL_NUM_OF_PRIORITIES];
+       /* True if any packets are queued for transmission */
+       int tx_queued;
+
+       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;
+};
+
+#ifdef IPWIRELESS_STATE_DEBUG
+int ipwireless_dump_hardware_state(char *p, size_t limit,
+                                  struct ipw_hardware *hw)
+{
+       return snprintf(p, limit,
+                       "debug: initializing=%d\n"
+                       "debug: tx_ready=%d\n"
+                       "debug: tx_queued=%d\n"
+                       "debug: rx_ready=%d\n"
+                       "debug: rx_bytes_queued=%d\n"
+                       "debug: blocking_rx=%d\n"
+                       "debug: removed=%d\n"
+                       "debug: hardware.shutting_down=%d\n"
+                       "debug: to_setup=%d\n",
+                       hw->initializing,
+                       hw->tx_ready,
+                       hw->tx_queued,
+                       hw->rx_ready,
+                       hw->rx_bytes_queued,
+                       hw->blocking_rx,
+                       hw->removed,
+                       hw->shutting_down,
+                       hw->to_setup);
+}
+#endif
+
+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 int do_send_fragment(struct ipw_hardware *hw, const unsigned char *data,
+                           unsigned length)
+{
+       int i;
+       unsigned long flags;
+
+       start_timing();
+
+       if (length == 0)
+               return 0;
+
+       if (length > hw->ll_mtu)
+               return -1;
+
+       if (ipwireless_debug)
+               dump_data_bytes("send", data, length);
+
+       spin_lock_irqsave(&hw->spinlock, flags);
+
+       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 (likely(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 + IODMADPR);
+
+               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 + IODMADPR);
+               }
+               while ((i & 3) != 2) {
+                       outw((unsigned short) 0xDEAD, hw->base_port + IODMADPR);
+                       i += 2;
+               }
+               writew(MEMRX_RX, &hw->memory_info_regs->memreg_rx);
+       }
+
+       spin_unlock_irqrestore(&hw->spinlock, flags);
+
+       end_write_timing(length);
+
+       return 0;
+}
+
+static int 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;
+
+       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->spinlock, flags);
+               list_add(&packet->queue, &hw->tx_queue[0]);
+               spin_unlock_irqrestore(&hw->spinlock, flags);
+       } else {
+               if (packet->packet_callback)
+                       packet->packet_callback(packet->callback_data,
+                                       packet->length);
+               kfree(packet);
+       }
+
+       return 0;
+}
+
+static void ipw_setup_hardware(struct ipw_hardware *hw)
+{
+       unsigned long flags;
+
+       spin_lock_irqsave(&hw->spinlock, 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->spinlock, 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;
+
+               /*
+                * If this is the first fragment, then we will need to fetch a
+                * packet to put it in.
+                */
+               spin_lock_irqsave(&hw->spinlock, flags);
+               /* If we have one in our pool, then pull it out. */
+               if (!list_empty(&hw->rx_pool)) {
+                       packet = list_first_entry(&hw->rx_pool,
+                                       struct ipw_rx_packet, queue);
+                       list_del(&packet->queue);
+                       hw->rx_pool_size--;
+                       spin_unlock_irqrestore(&hw->spinlock, flags);
+               } else {
+                       /* Otherwise allocate a new one. */
+                       static int min_capacity = 256;
+                       int new_capacity;
+
+                       spin_unlock_irqrestore(&hw->spinlock, 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 this packet does not have sufficient capacity for the data we
+        * want to add, then make it bigger.
+        */
+       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)
+                       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_tail(&packet->queue, &hw->rx_pool);
+       }
+}
+
+static void queue_received_packet(struct ipw_hardware *hw,
+                                 unsigned int protocol, unsigned int address,
+                                 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->spinlock, flags);
+                       hw->rx_bytes_queued += packet->length;
+                       spin_unlock_irqrestore(&hw->spinlock, 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->spinlock, 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->spinlock, 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->spinlock, 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->spinlock, 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->spinlock, 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->spinlock, flags);
+}
+
+static void handle_received_CTRL_packet(struct ipw_hardware *hw,
+                                       unsigned int channel_idx,
+                                       unsigned char *data, int len)
+{
+       struct ipw_control_packet_body *body =
+               (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,
+                                  union nl_packet *packet,
+                                  unsigned short len)
+{
+       unsigned int protocol = packet->hdr.protocol;
+       unsigned int address = packet->hdr.address;
+       unsigned int header_length;
+       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 int 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 + IODMADPR);
+               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 + IODMADPR);
+                       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 + IODMADPR);
+                       i += 2;
+               }
+       }
+
+       acknowledge_data_read(hw);
+
+       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->spinlock, flags);
+       while (hw->rx_ready && !hw->blocking_rx) {
+               received = 1;
+               hw->rx_ready--;
+               spin_unlock_irqrestore(&hw->spinlock, flags);
+
+               do_receive_packet(hw);
+
+               spin_lock_irqsave(&hw->spinlock, flags);
+       }
+       spin_unlock_irqrestore(&hw->spinlock, 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->spinlock, flags);
+       if (hw->tx_queued && hw->tx_ready != 0) {
+               int priority;
+               struct ipw_tx_packet *packet = NULL;
+
+               hw->tx_ready--;
+
+               /* 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);
+
+                               list_del(&packet->queue);
+
+                               break;
+                       }
+               }
+               if (!packet) {
+                       hw->tx_queued = 0;
+                       spin_unlock_irqrestore(&hw->spinlock, flags);
+                       return 0;
+               }
+               spin_unlock_irqrestore(&hw->spinlock, flags);
+
+               /* Send */
+               do_send_packet(hw, packet);
+
+               /* Check if more to send */
+               spin_lock_irqsave(&hw->spinlock, 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->spinlock, 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->spinlock, flags);
+       if (hw->shutting_down) {
+               spin_unlock_irqrestore(&hw->spinlock, flags);
+               return;
+       }
+
+       if (hw->to_setup == 1) {
+               /*
+                * Initial setup data sent to hardware
+                */
+               hw->to_setup = 2;
+               spin_unlock_irqrestore(&hw->spinlock, 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->spinlock, 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->spinlock, flags);
+                       hw->tx_ready++;
+                       spin_unlock_irqrestore(&hw->spinlock, flags);
+               }
+               /* Received data */
+               if (irqn & IR_RXINTR) {
+                       ack |= IR_RXINTR;
+                       spin_lock_irqsave(&hw->spinlock, flags);
+                       hw->rx_ready++;
+                       spin_unlock_irqrestore(&hw->spinlock, 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->spinlock, flags);
+                               hw->rx_ready++;
+                               spin_unlock_irqrestore(&hw->spinlock, 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->spinlock, flags);
+                               hw->rx_ready++;
+                               spin_unlock_irqrestore(&hw->spinlock, flags);
+                       }
+                       rx = 1;
+               }
+       }
+       if (memrxdone & MEMRX_RX_DONE) {
+               writew(0, &hw->memory_info_regs->memreg_rx_done);
+               spin_lock_irqsave(&hw->spinlock, flags);
+               hw->tx_ready++;
+               spin_unlock_irqrestore(&hw->spinlock, 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 pt_regs *regs)
+{
+       struct ipw_hardware *hw = dev_id;
+
+       if (hw->hw_version == HW_VERSION_1)
+               return ipwireless_handle_v1_interrupt(irq, hw);
+       else
+               return ipwireless_handle_v2_v3_interrupt(irq, hw);
+}
+
+static void flush_packets_to_hw(struct ipw_hardware *hw)
+{
+       int priority_limit;
+       unsigned long flags;
+
+       spin_lock_irqsave(&hw->spinlock, flags);
+       priority_limit = get_current_packet_priority(hw);
+       spin_unlock_irqrestore(&hw->spinlock, 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->spinlock, flags);
+       list_add_tail(&packet->queue, &hw->tx_queue[priority]);
+       hw->tx_queued = 1;
+       spin_unlock_irqrestore(&hw->spinlock, 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,
+                           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,
+                              (unsigned char) (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),
+                       (unsigned char) (channel_idx + 1),
+                       protocolid, line);
+       if (!packet)
+               return -ENOMEM;
+       packet->header.length = sizeof(struct ipw_control_packet_body);
+       packet->body.value = (unsigned char) (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,
+                                        unsigned char *data, int len,
+                                        int is_last)
+{
+       union ipw_setup_rx_msg *rx_msg = (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->spinlock);
+       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->spinlock, flags);
+                       hw->to_setup = 1;
+                       hw->tx_ready = 1;
+                       spin_unlock_irqrestore(&hw->spinlock, 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_scheduled_work();
+
+       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;
+}
diff --git a/drivers/char/pcmcia/ipwireless/hardware.h b/drivers/char/pcmcia/ipwireless/hardware.h
new file mode 100644 (file)
index 0000000..c83190f
--- /dev/null
@@ -0,0 +1,64 @@
+/*
+ * 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, struct pt_regs *regs);
+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,
+                           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);
+int ipwireless_dump_hardware_state(char *p, size_t limit,
+                                  struct ipw_hardware *hw);
+
+#endif
diff --git a/drivers/char/pcmcia/ipwireless/main.c b/drivers/char/pcmcia/ipwireless/main.c
new file mode 100644 (file)
index 0000000..00c7f84
--- /dev/null
@@ -0,0 +1,501 @@
+/*
+ * 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/version.h>
+#include <pcmcia/cisreg.h>
+#include <pcmcia/device_id.h>
+#include <pcmcia/ss.h>
+#include <pcmcia/ds.h>
+#include <pcmcia/cs.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 = 1;
+
+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 queue [1]");
+
+/* 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;
+       int ret = pccard_reset_card(link->socket);
+
+       if (ret != CS_SUCCESS)
+               cs_error(link, ResetCard, ret);
+}
+
+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 config_ipwireless(struct ipw_dev *ipw)
+{
+       struct pcmcia_device *link = ipw->link;
+       int ret;
+       config_info_t conf;
+       tuple_t tuple;
+       unsigned short buf[64];
+       cisparse_t parse;
+       unsigned short cor_value;
+       win_req_t request_attr_memory;
+       win_req_t request_common_memory;
+       memreq_t memreq_attr_memory;
+       memreq_t memreq_common_memory;
+
+       ipw->is_v2_card = 0;
+
+       tuple.Attributes = 0;
+       tuple.TupleData = (cisdata_t *) buf;
+       tuple.TupleDataMax = sizeof(buf);
+       tuple.TupleOffset = 0;
+
+       tuple.DesiredTuple = RETURN_FIRST_TUPLE;
+
+       ret = pcmcia_get_first_tuple(link, &tuple);
+
+       while (ret == 0) {
+               ret = pcmcia_get_tuple_data(link, &tuple);
+
+               if (ret != CS_SUCCESS) {
+                       cs_error(link, GetTupleData, ret);
+                       goto exit0;
+               }
+               ret = pcmcia_get_next_tuple(link, &tuple);
+       }
+
+       tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
+
+       ret = pcmcia_get_first_tuple(link, &tuple);
+
+       if (ret != CS_SUCCESS) {
+               cs_error(link, GetFirstTuple, ret);
+               goto exit0;
+       }
+
+       ret = pcmcia_get_tuple_data(link, &tuple);
+
+       if (ret != CS_SUCCESS) {
+               cs_error(link, GetTupleData, ret);
+               goto exit0;
+       }
+
+       ret = pcmcia_parse_tuple(link, &tuple, &parse);
+
+       if (ret != CS_SUCCESS) {
+               cs_error(link, ParseTuple, ret);
+               goto exit0;
+       }
+
+       link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
+       link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
+       link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
+       link->io.IOAddrLines = 16;
+
+       link->irq.IRQInfo1 = parse.cftable_entry.irq.IRQInfo1;
+
+       /* 0x40 causes it to generate level mode interrupts. */
+       /* 0x04 enables IREQ pin. */
+       cor_value = parse.cftable_entry.index | 0x44;
+       link->conf.ConfigIndex = cor_value;
+
+       /* IRQ and I/O settings */
+       tuple.DesiredTuple = CISTPL_CONFIG;
+
+       ret = pcmcia_get_first_tuple(link, &tuple);
+
+       if (ret != CS_SUCCESS) {
+               cs_error(link, GetFirstTuple, ret);
+               goto exit0;
+       }
+
+       ret = pcmcia_get_tuple_data(link, &tuple);
+
+       if (ret != CS_SUCCESS) {
+               cs_error(link, GetTupleData, ret);
+               goto exit0;
+       }
+
+       ret = pcmcia_parse_tuple(link, &tuple, &parse);
+
+       if (ret != CS_SUCCESS) {
+               cs_error(link, GetTupleData, ret);
+               goto exit0;
+       }
+       link->conf.Attributes = CONF_ENABLE_IRQ;
+       link->conf.ConfigBase = parse.config.base;
+       link->conf.Present = parse.config.rmask[0];
+       link->conf.IntType = INT_MEMORY_AND_IO;
+
+       link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING | IRQ_HANDLE_PRESENT;
+       link->irq.Handler = ipwireless_interrupt;
+       link->irq.Instance = ipw->hardware;
+
+       ret = pcmcia_request_io(link, &link->io);
+
+       if (ret != CS_SUCCESS) {
+               cs_error(link, RequestIO, ret);
+               goto exit0;
+       }
+
+       /* memory settings */
+
+       tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
+
+       ret = pcmcia_get_first_tuple(link, &tuple);
+
+       if (ret != CS_SUCCESS) {
+               cs_error(link, GetFirstTuple, ret);
+               goto exit1;
+       }
+
+       ret = pcmcia_get_tuple_data(link, &tuple);
+
+       if (ret != CS_SUCCESS) {
+               cs_error(link, GetTupleData, ret);
+               goto exit1;
+       }
+
+       ret = pcmcia_parse_tuple(link, &tuple, &parse);
+
+       if (ret != CS_SUCCESS) {
+               cs_error(link, ParseTuple, ret);
+               goto exit1;
+       }
+
+       if (parse.cftable_entry.mem.nwin > 0) {
+               request_common_memory.Attributes =
+                       WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_CM | WIN_ENABLE;
+               request_common_memory.Base =
+                       parse.cftable_entry.mem.win[0].host_addr;
+               request_common_memory.Size = parse.cftable_entry.mem.win[0].len;
+               if (request_common_memory.Size < 0x1000)
+                       request_common_memory.Size = 0x1000;
+               request_common_memory.AccessSpeed = 0;
+
+               ret = pcmcia_request_window(&link, &request_common_memory,
+                               &ipw->handle_common_memory);
+
+               if (ret != CS_SUCCESS) {
+                       cs_error(link, RequestWindow, ret);
+                       goto exit1;
+               }
+
+               memreq_common_memory.CardOffset =
+                       parse.cftable_entry.mem.win[0].card_addr;
+               memreq_common_memory.Page = 0;
+
+               ret = pcmcia_map_mem_page(ipw->handle_common_memory,
+                               &memreq_common_memory);
+
+               if (ret != CS_SUCCESS) {
+                       cs_error(link, MapMemPage, ret);
+                       goto exit1;
+               }
+
+               ipw->is_v2_card =
+                       parse.cftable_entry.mem.win[0].len == 0x100;
+
+               ipw->common_memory = ioremap(request_common_memory.Base,
+                               request_common_memory.Size);
+
+               request_attr_memory.Attributes =
+                       WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_AM | WIN_ENABLE;
+               request_attr_memory.Base = 0;
+               request_attr_memory.Size = 0;   /* this used to be 0x1000 */
+               request_attr_memory.AccessSpeed = 0;
+
+               ret = pcmcia_request_window(&link, &request_attr_memory,
+                               &ipw->handle_attr_memory);
+
+               if (ret != CS_SUCCESS) {
+                       cs_error(link, RequestWindow, ret);
+                       goto exit2;
+               }
+
+               memreq_attr_memory.CardOffset = 0;
+               memreq_attr_memory.Page = 0;
+
+               ret = pcmcia_map_mem_page(ipw->handle_attr_memory,
+                               &memreq_attr_memory);
+
+               if (ret != CS_SUCCESS) {
+                       cs_error(link, MapMemPage, ret);
+                       goto exit2;
+               }
+
+               ipw->attr_memory = ioremap(request_attr_memory.Base,
+                               request_attr_memory.Size);
+       }
+
+       INIT_WORK(&ipw->work_reboot, signalled_reboot_work);
+
+       ipwireless_init_hardware_v1(ipw->hardware, link->io.BasePort1,
+                                   ipw->attr_memory, ipw->common_memory,
+                                   ipw->is_v2_card, signalled_reboot_callback,
+                                   ipw);
+
+       ret = pcmcia_request_irq(link, &link->irq);
+
+       if (ret != CS_SUCCESS) {
+               cs_error(link, RequestIRQ, ret);
+               goto exit3;
+       }
+
+       /* Look up current Vcc */
+
+       ret = pcmcia_get_configuration_info(link, &conf);
+
+       if (ret != CS_SUCCESS) {
+               cs_error(link, GetConfigurationInfo, ret);
+               goto exit4;
+       }
+
+       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 0x%04x-0x%04x, irq %d\n",
+                       (unsigned int) link->io.BasePort1,
+                       (unsigned int) (link->io.BasePort1 +
+                               link->io.NumPorts1 - 1),
+                       (unsigned int) link->irq.AssignedIRQ);
+       if (ipw->attr_memory && ipw->common_memory)
+               printk(KERN_INFO IPWIRELESS_PCCARD_NAME
+                               ": attr memory 0x%08lx-0x%08lx, "
+                               "common memory 0x%08lx-0x%08lx\n",
+                               request_attr_memory.Base,
+                               request_attr_memory.Base
+                               + request_attr_memory.Size - 1,
+                               request_common_memory.Base,
+                               request_common_memory.Base
+                               + request_common_memory.Size - 1);
+
+       ipw->network = ipwireless_network_create(ipw->hardware);
+       if (!ipw->network)
+               goto exit3;
+
+       ipw->tty = ipwireless_tty_create(ipw->hardware, ipw->network,
+                       ipw->nodes);
+       if (!ipw->tty)
+               goto exit3;
+
+       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_request_configuration(link, &link->conf);
+
+       if (ret != CS_SUCCESS) {
+               cs_error(link, RequestConfiguration, ret);
+               goto exit4;
+       }
+
+       link->dev_node = &ipw->nodes[0];
+
+       return 0;
+
+exit4:
+       pcmcia_disable_device(link);
+exit3:
+       if (ipw->attr_memory) {
+               iounmap(ipw->attr_memory);
+               pcmcia_release_window(ipw->handle_attr_memory);
+               pcmcia_disable_device(link);
+       }
+exit2:
+       if (ipw->common_memory) {
+               iounmap(ipw->common_memory);
+               pcmcia_release_window(ipw->handle_common_memory);
+       }
+exit1:
+       pcmcia_disable_device(link);
+exit0:
+       return -1;
+}
+
+static void release_ipwireless(struct ipw_dev *ipw)
+{
+       struct pcmcia_device *link = ipw->link;
+
+       pcmcia_disable_device(link);
+
+       if (ipw->common_memory)
+               iounmap(ipw->common_memory);
+       if (ipw->attr_memory)
+               iounmap(ipw->attr_memory);
+       if (ipw->common_memory)
+               pcmcia_release_window(ipw->handle_common_memory);
+       if (ipw->attr_memory)
+               pcmcia_release_window(ipw->handle_attr_memory);
+       pcmcia_disable_device(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;
+       link->irq.Instance = ipw;
+
+       /* Link this device into our device list. */
+       link->dev_node = &ipw->nodes[0];
+
+       ipw->hardware = ipwireless_hardware_create();
+       if (!ipw->hardware) {
+               kfree(ipw);
+               return -ENOMEM;
+       }
+       /* RegisterClient will call config_ipwireless */
+
+       ret = config_ipwireless(ipw);
+
+       if (ret != 0) {
+               cs_error(link, RegisterClient, ret);
+               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);
+
+       /* Break the link with Card Services */
+       if (link)
+               pcmcia_disable_device(link);
+
+       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,
+       .drv = { .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;
+
+       printk(KERN_INFO IPWIRELESS_PCCARD_NAME " "
+              IPWIRELESS_PCMCIA_VERSION " by " IPWIRELESS_PCMCIA_AUTHOR "\n");
+
+       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)
+{
+       printk(KERN_INFO IPWIRELESS_PCCARD_NAME " "
+                       IPWIRELESS_PCMCIA_VERSION " removed\n");
+
+       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");
diff --git a/drivers/char/pcmcia/ipwireless/main.h b/drivers/char/pcmcia/ipwireless/main.h
new file mode 100644 (file)
index 0000000..1bfdcc8
--- /dev/null
@@ -0,0 +1,70 @@
+/*
+ * 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/cs_types.h>
+#include <pcmcia/cs.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;
+       window_handle_t handle_attr_memory;
+       void __iomem *attr_memory;
+       window_handle_t handle_common_memory;
+       void __iomem *common_memory;
+       dev_node_t nodes[2];
+       /* 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
diff --git a/drivers/char/pcmcia/ipwireless/network.c b/drivers/char/pcmcia/ipwireless/network.c
new file mode 100644 (file)
index 0000000..ff35230
--- /dev/null
@@ -0,0 +1,512 @@
+/*
+ * 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/if_ppp.h>
+#include <linux/skbuff.h>
+
+#include "network.h"
+#include "hardware.h"
+#include "main.h"
+#include "tty.h"
+
+#define MAX_OUTGOING_PACKETS_QUEUED   ipwireless_out_queue
+#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 spinlock;
+       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;
+};
+
+
+#ifdef IPWIRELESS_STATE_DEBUG
+int ipwireless_dump_network_state(char *p, size_t limit,
+                                 struct ipw_network *network)
+{
+       return snprintf(p, limit,
+                       "debug: ppp_blocked=%d\n"
+                       "debug: outgoing_packets_queued=%d\n"
+                       "debug: network.shutting_down=%d\n",
+                       network->ppp_blocked,
+                       network->outgoing_packets_queued,
+                       network->shutting_down);
+}
+#endif
+
+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->spinlock, flags);
+       network->outgoing_packets_queued--;
+       if (network->ppp_channel != NULL) {
+               if (network->ppp_blocked) {
+                       network->ppp_blocked = 0;
+                       spin_unlock_irqrestore(&network->spinlock, flags);
+                       ppp_output_wakeup(network->ppp_channel);
+                       if (ipwireless_debug)
+                               printk(KERN_INFO IPWIRELESS_PCCARD_NAME
+                                      ": ppp unblocked\n");
+               } else
+                       spin_unlock_irqrestore(&network->spinlock, flags);
+       } else
+               spin_unlock_irqrestore(&network->spinlock, 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->spinlock, flags);
+       if (network->outgoing_packets_queued < MAX_OUTGOING_PACKETS_QUEUED) {
+               unsigned char *buf;
+               static unsigned char header[] = {
+                       PPP_ALLSTATIONS, /* 0xff */
+                       PPP_UI,          /* 0x03 */
+               };
+               int ret;
+
+               network->outgoing_packets_queued++;
+               spin_unlock_irqrestore(&network->spinlock, 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->spinlock, flags);
+               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 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->spinlock, flags);
+       if (!network->ppp_channel) {
+               struct ppp_channel *channel;
+
+               spin_unlock_irqrestore(&network->spinlock, 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->spinlock, flags);
+               network->ppp_channel = channel;
+       }
+       spin_unlock_irqrestore(&network->spinlock, 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->spinlock, flags);
+       if (network->ppp_channel != NULL) {
+               struct ppp_channel *channel = network->ppp_channel;
+
+               network->ppp_channel = NULL;
+               spin_unlock_irqrestore(&network->spinlock, flags);
+               mutex_unlock(&network->close_lock);
+               ppp_unregister_channel(channel);
+       } else {
+               spin_unlock_irqrestore(&network->spinlock, 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 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 && 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->spinlock, flags);
+                       if (network->ppp_channel != NULL) {
+                               struct sk_buff *skb;
+
+                               spin_unlock_irqrestore(&network->spinlock,
+                                               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->spinlock,
+                                               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->spinlock);
+       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_scheduled_work();
+
+       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->spinlock, flags);
+       if (network->ppp_channel != NULL)
+               ret = ppp_channel_index(network->ppp_channel);
+       spin_unlock_irqrestore(&network->spinlock, flags);
+
+       return ret;
+}
+
+int ipwireless_ppp_unit_number(struct ipw_network *network)
+{
+       int ret = -1;
+       unsigned long flags;
+
+       spin_lock_irqsave(&network->spinlock, flags);
+       if (network->ppp_channel != NULL)
+               ret = ppp_unit_number(network->ppp_channel);
+       spin_unlock_irqrestore(&network->spinlock, flags);
+
+       return ret;
+}
diff --git a/drivers/char/pcmcia/ipwireless/network.h b/drivers/char/pcmcia/ipwireless/network.h
new file mode 100644 (file)
index 0000000..b0e1e95
--- /dev/null
@@ -0,0 +1,55 @@
+/*
+ * 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_dump_network_state(char *p, size_t limit,
+                                 struct ipw_network *net);
+
+#endif
diff --git a/drivers/char/pcmcia/ipwireless/setup_protocol.h b/drivers/char/pcmcia/ipwireless/setup_protocol.h
new file mode 100644 (file)
index 0000000..9d6bcc7
--- /dev/null
@@ -0,0 +1,108 @@
+/*
+ * 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_ */
diff --git a/drivers/char/pcmcia/ipwireless/tty.c b/drivers/char/pcmcia/ipwireless/tty.c
new file mode 100644 (file)
index 0000000..42f3815
--- /dev/null
@@ -0,0 +1,688 @@
+/*
+ * 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 <linux/version.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,
+                              (unsigned char *) 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;
+
+       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 -ENODEV;
+
+       if (!tty->open_count)
+               return -EINVAL;
+
+       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 file *file)
+{
+       struct ipw_tty *tty = linux_tty->driver_data;
+
+       if (!tty)
+               return -ENODEV;
+
+       if (!tty->open_count)
+               return -EINVAL;
+
+       return get_control_lines(tty);
+}
+
+static int
+ipw_tiocmset(struct tty_struct *linux_tty, struct file *file,
+            unsigned int set, unsigned int clear)
+{
+       struct ipw_tty *tty = linux_tty->driver_data;
+
+       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, struct file *file,
+                    unsigned int cmd, unsigned long arg)
+{
+       struct ipw_tty *tty = linux_tty->driver_data;
+
+       if (!tty)
+               return -ENODEV;
+
+       if (!tty->open_count)
+               return -EINVAL;
+
+       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 TCGETS:
+               case TCGETA:
+                       return n_tty_ioctl(linux_tty, file, cmd, arg);
+
+               case TCFLSH:
+                       return n_tty_ioctl(linux_tty, file, cmd, arg);
+
+               case FIONREAD:
+                       {
+                               int val = 0;
+
+                               if (put_user(val, (int __user *) arg))
+                                       return -EFAULT;
+                       }
+                       return 0;
+               }
+       }
+
+       return -ENOIOCTLCMD;
+}
+
+static int add_tty(dev_node_t *nodesp, 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 (nodesp != NULL) {
+               sprintf(nodesp->dev_name, "ttyIPWp%d", j);
+               nodesp->major = ipw_tty_driver->major;
+               nodesp->minor = j + ipw_tty_driver->minor_start;
+       }
+       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,
+                                     dev_node_t *nodes)
+{
+       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(&nodes[0], j, hardware, network,
+                                       IPW_CHANNEL_DIALLER, IPW_CHANNEL_RAS,
+                                       TTYTYPE_MODEM))
+                               return NULL;
+
+                       j += IPWIRELESS_PCMCIA_MINOR_RANGE;
+                       if (add_tty(&nodes[1], j, hardware, network,
+                                       IPW_CHANNEL_DIALLER, -1,
+                                       TTYTYPE_MONITOR))
+                               return NULL;
+
+                       j += IPWIRELESS_PCMCIA_MINOR_RANGE;
+                       if (add_tty(NULL, j, hardware, network,
+                                       IPW_CHANNEL_RAS, -1,
+                                       TTYTYPE_RAS_RAW))
+                               return NULL;
+
+                       nodes[0].next = &nodes[1];
+                       nodes[1].next = 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_scheduled_work();
+                               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 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);
+       }
+}
+
diff --git a/drivers/char/pcmcia/ipwireless/tty.h b/drivers/char/pcmcia/ipwireless/tty.h
new file mode 100644 (file)
index 0000000..b0deb91
--- /dev/null
@@ -0,0 +1,48 @@
+/*
+ * 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/cs_types.h>
+#include <pcmcia/cs.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,
+                                     dev_node_t *nodes);
+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