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Message-ID: <20080129134924.GB32589@ds.suse.cz>
Date: Tue, 29 Jan 2008 14:49:24 +0100
From: David Sterba <dsterba@...e.cz>
To: torvalds@...ux-foundation.org
Cc: linux-kernel@...r.kernel.org, jkosina@...e.cz,
benm@...metric.co.nz, stephen@...metric.co.nz
Subject: [PATCH v3] ipwireless: driver for 3G PC Card
Hi,
I'm resending the patch with fixes after feedback from lkml.
Changelog v2->v3:
- use __BIG_ENDIAN_BITFIELDS
- fixed typos and @ ! artifacts in comments
- cleaned and a bit documented module params
- added ':' after module names in printk
- use safe snprintf for some debug output
David Sterba
---
From: David Sterba <dsterba@...e.cz>
ipwireless_cs: driver for PC Card, 3G internet connection
The driver is manufactured by IPWireless.
Rewieved-by: Jiri Slaby <jslaby@...e.cz>
Signed-off-by: Ben Martel <benm@...metric.co.nz>
Signed-off-by: Stephen Blackheath <stephen@...metric.co.nz>
Signed-off-by: David Sterba <dsterba@...e.cz>
Signed-off-by: Jiri Kosina <jkosina@...e.cz>
---
MAINTAINERS | 8
drivers/char/pcmcia/Kconfig | 9
drivers/char/pcmcia/Makefile | 2
drivers/char/pcmcia/ipwireless/Makefile | 10
drivers/char/pcmcia/ipwireless/hardware.c | 1788 ++++++++++++++++++++++++
drivers/char/pcmcia/ipwireless/hardware.h | 64
drivers/char/pcmcia/ipwireless/main.c | 500 ++++++
drivers/char/pcmcia/ipwireless/main.h | 70
drivers/char/pcmcia/ipwireless/network.c | 512 ++++++
drivers/char/pcmcia/ipwireless/network.h | 55
drivers/char/pcmcia/ipwireless/setup_protocol.h | 108 +
drivers/char/pcmcia/ipwireless/tty.c | 688 +++++++++
drivers/char/pcmcia/ipwireless/tty.h | 48
13 files changed, 3862 insertions(+)
---
diff --git a/MAINTAINERS b/MAINTAINERS
index df40a4e..fc01a22 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2007,6 +2007,14 @@ M: acme@...stprotocols.net
L: netdev@...r.kernel.org
S: Maintained
+IPWIRELES DRIVER
+P: Jiri Kosina
+M: jkosina@...e.cz
+P: David Sterba
+M: dsterba@...e.cz
+S: Maintained
+T: git://git.kernel.org/pub/scm/linux/kernel/git/jikos/ipwireless_cs.git
+
IRDA SUBSYSTEM
P: Samuel Ortiz
M: samuel@...tiz.org
diff --git a/drivers/char/pcmcia/Kconfig b/drivers/char/pcmcia/Kconfig
index f25facd..00b8a84 100644
--- a/drivers/char/pcmcia/Kconfig
+++ b/drivers/char/pcmcia/Kconfig
@@ -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
diff --git a/drivers/char/pcmcia/Makefile b/drivers/char/pcmcia/Makefile
index 0aae209..be8f287 100644
--- a/drivers/char/pcmcia/Makefile
+++ b/drivers/char/pcmcia/Makefile
@@ -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-$(CONFIG_CARDMAN_4040) += cm4040_cs.o
diff --git a/drivers/char/pcmcia/ipwireless/Makefile b/drivers/char/pcmcia/ipwireless/Makefile
new file mode 100644
index 0000000..b71eb59
--- /dev/null
+++ b/drivers/char/pcmcia/ipwireless/Makefile
@@ -0,0 +1,10 @@
+#
+# drivers/char/pcmcia/ipwireless/Makefile
+#
+# Makefile for the IPWireless driver
+#
+
+obj-$(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
index 0000000..8e418df
--- /dev/null
+++ b/drivers/char/pcmcia/ipwireless/hardware.c
@@ -0,0 +1,1788 @@
+/*
+ * IPWireless 3G PCMCIA Network Driver
+ *
+ * Original code
+ * by Stephen Blackheath <stephen@...cksapphire.com>,
+ * Ben Martel <benm@...metric.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 ((unsigned short) 0x1)
+#define IER_TXENABLED ((unsigned short) 0x2)
+
+/* ISR bits */
+#define IR_RXINTR ((unsigned short) 0x1)
+#define IR_TXINTR ((unsigned short) 0x2)
+
+/* DCR bits */
+#define DCR_RXDONE ((unsigned short) 0x1)
+#define DCR_TXDONE ((unsigned short) 0x2)
+#define DCR_RXRESET ((unsigned short) 0x4)
+#define DCR_TXRESET ((unsigned short) 0x8)
+
+/* I/O ports and bit definitions for version 2 of the hardware */
+
+struct MEMCCR {
+ unsigned short PCCOR; /* Configuration Option Register */
+ unsigned short PCCSR; /* Configuration and Status Register */
+ unsigned short PCPRR; /* Pin Replacemant Register */
+ unsigned short PCSCR; /* Socket and Copy Register */
+ unsigned short PCESR; /* Extendend Status Register */
+ unsigned short 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 ((unsigned long)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;
+ int bad_interrupt_count;
+ 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 */
+enum ComCtrl_DTESignal {
+ ComCtrl_RTS = 0,
+ ComCtrl_DTR = 1
+};
+
+/* Signals from DCE */
+enum ComCtrl_DCESignal {
+ ComCtrl_CTS = 2,
+ ComCtrl_DCD = 3,
+ ComCtrl_DSR = 4,
+ ComCtrl_RI = 5
+};
+
+struct ipw_control_packet_body {
+ /* ComCtrl_DTESignal or ComCtrl_DCESignal */
+ unsigned char sig_no;
+ /* ComCtrl_SET(0) or ComCtrl_CLEAR(1) */
+ 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 = (unsigned short) 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 PCCSR.
+ */
+ unsigned short csr = readw(&hw->memregs_CCR->PCCSR);
+
+ csr |= 1;
+ writew(csr, &hw->memregs_CCR->PCCSR);
+ }
+ 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 short 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 %d bytes - "
+ "longer than the MTU!\n", (unsigned int)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 %d bytes - "
+ "longer than the MTU!\n", (unsigned int)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) != (unsigned short) 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;
+ unsigned short ack;
+
+ irqn = inw(hw->base_port + IOIR);
+
+ /* Check if card is present */
+ if (irqn == (unsigned short) 0xFFFF) {
+ if (++hw->bad_interrupt_count >= 100) {
+ /*
+ * It is necessary to disable the interrupt at this
+ * point, or the kernel hangs, interrupting repeatedly
+ * forever.
+ */
+ hw->irq = irq;
+ hw->removed = 1;
+ disable_irq_nosync(irq);
+ printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
+ ": Mr. Fluffy is not happy!\n");
+ }
+ return IRQ_HANDLED;
+ } else if (irqn != 0) {
+ ack = 0;
+ /* Transmit complete. */
+ if (irqn & IR_TXINTR) {
+ ack |= IR_TXINTR;
+ hw->tx_ready++;
+ }
+ /* Received data */
+ if (irqn & IR_RXINTR) {
+ ack |= IR_RXINTR;
+ hw->rx_ready++;
+ }
+ 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->PCCSR);
+
+ csr &= 0xfffd;
+ writew(csr, &hw->memregs_CCR->PCCSR);
+}
+
+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;
+
+ 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;
+ hw->rx_ready++;
+ 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");
+
+ hw->rx_ready++;
+ rx = 1;
+ }
+ }
+ if (memrxdone & MEMRX_RX_DONE) {
+ writew(0, &hw->memory_info_regs->memreg_rx_done);
+ hw->tx_ready++;
+ 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 -1;
+ 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 -1;
+ 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 TlSetupGetVersionQry body;
+};
+
+struct ipw_setup_config_packet {
+ struct ipw_tx_packet header;
+ struct TlSetupConfigMsg body;
+};
+
+struct ipw_setup_config_done_packet {
+ struct ipw_tx_packet header;
+ struct TlSetupConfigDoneMsg body;
+};
+
+struct ipw_setup_open_packet {
+ struct ipw_tx_packet header;
+ struct TlSetupOpenMsg body;
+};
+
+struct ipw_setup_info_packet {
+ struct ipw_tx_packet header;
+ struct TlSetupInfoMsg 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 TlSetupConfigMsg);
+ 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 TlSetupConfigDoneMsg);
+ 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 TlSetupOpenMsg);
+ 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 TlSetupInfoMsg);
+ 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 TlSetupGetVersionQry);
+
+ /*
+ * 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->VersRspMsg.version);
+ break;
+
+ case TL_SETUP_SIGNO_OPEN_MSG:
+ if (ipwireless_debug) {
+ unsigned int channel_idx = rx_msg->OpenMsg.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)
+{
+ hw->bad_interrupt_count = 0;
+ 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)) {
+ hw->to_setup = 1;
+ hw->tx_ready = 1;
+ 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
index 0000000..c83190f
--- /dev/null
+++ b/drivers/char/pcmcia/ipwireless/hardware.h
@@ -0,0 +1,64 @@
+/*
+ * IPWireless 3G PCMCIA Network Driver
+ *
+ * Original code
+ * by Stephen Blackheath <stephen@...cksapphire.com>,
+ * Ben Martel <benm@...metric.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
index 0000000..1bb3f2b
--- /dev/null
+++ b/drivers/char/pcmcia/ipwireless/main.c
@@ -0,0 +1,500 @@
+/*
+ * IPWireless 3G PCMCIA Network Driver
+ *
+ * Original code
+ * by Stephen Blackheath <stephen@...cksapphire.com>,
+ * Ben Martel <benm@...metric.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;
+static int tty_major;
+
+module_param(tty_major, int, 0);
+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(tty_major, "ttyIPWp major number [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]");
+
+static const char drv_name[] = IPWIRELESS_PCCARD_NAME;
+
+/* 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 reqAM;
+ win_req_t reqCM;
+ memreq_t memAM;
+ memreq_t memCM;
+
+ ipw->isV2Card = 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) {
+ reqCM.Attributes =
+ WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_CM | WIN_ENABLE;
+ reqCM.Base = parse.cftable_entry.mem.win[0].host_addr;
+ reqCM.Size = parse.cftable_entry.mem.win[0].len;
+ if (reqCM.Size < 0x1000)
+ reqCM.Size = 0x1000;
+ reqCM.AccessSpeed = 0;
+
+ ret = pcmcia_request_window(&link, &reqCM, &ipw->handleCM);
+
+ if (ret != CS_SUCCESS) {
+ cs_error(link, RequestWindow, ret);
+ goto exit1;
+ }
+
+ memCM.CardOffset = parse.cftable_entry.mem.win[0].card_addr;
+ memCM.Page = 0;
+
+ ret = pcmcia_map_mem_page(ipw->handleCM, &memCM);
+
+ if (ret != CS_SUCCESS) {
+ cs_error(link, MapMemPage, ret);
+ goto exit1;
+ }
+
+ ipw->isV2Card =
+ parse.cftable_entry.mem.win[0].len == 0x100;
+
+ ipw->commonMemory = ioremap(reqCM.Base, reqCM.Size);
+
+ reqAM.Attributes =
+ WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_AM | WIN_ENABLE;
+ reqAM.Base = 0;
+ reqAM.Size = 0; /* this used to be 0x1000 */
+ reqAM.AccessSpeed = 0;
+
+ ret = pcmcia_request_window(&link, &reqAM, &ipw->handleAM);
+
+ if (ret != CS_SUCCESS) {
+ cs_error(link, RequestWindow, ret);
+ goto exit2;
+ }
+
+ memAM.CardOffset = 0;
+ memAM.Page = 0;
+
+ ret = pcmcia_map_mem_page(ipw->handleAM, &memAM);
+
+ if (ret != CS_SUCCESS) {
+ cs_error(link, MapMemPage, ret);
+ goto exit2;
+ }
+
+ ipw->attrMemory = ioremap(reqAM.Base, reqAM.Size);
+ }
+
+ INIT_WORK(&ipw->work_reboot, signalled_reboot_work);
+
+ ipwireless_init_hardware_v1(ipw->hardware, link->io.BasePort1,
+ ipw->attrMemory, ipw->commonMemory,
+ ipw->isV2Card, 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->isV2Card ? "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->attrMemory && ipw->commonMemory)
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME
+ ": attr memory 0x%08lx-0x%08lx, "
+ "common memory 0x%08lx-0x%08lx\n",
+ (unsigned long)reqAM.Base,
+ (unsigned long)reqAM.Base +
+ (unsigned long)reqAM.Size -
+ (unsigned long) 1,
+ (unsigned long)reqCM.Base,
+ (unsigned long)reqCM.Base +
+ (unsigned long)reqCM.Size -
+ (unsigned long) 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->attrMemory) {
+ iounmap(ipw->attrMemory);
+ pcmcia_release_window(ipw->handleAM);
+ pcmcia_disable_device(link);
+ }
+exit2:
+ if (ipw->commonMemory) {
+ iounmap(ipw->commonMemory);
+ pcmcia_release_window(ipw->handleCM);
+ }
+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->commonMemory)
+ iounmap(ipw->commonMemory);
+ if (ipw->attrMemory)
+ iounmap(ipw->attrMemory);
+ if (ipw->commonMemory)
+ pcmcia_release_window(ipw->handleCM);
+ if (ipw->attrMemory)
+ pcmcia_release_window(ipw->handleAM);
+ 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 = drv_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(tty_major);
+ 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
index 0000000..17de305
--- /dev/null
+++ b/drivers/char/pcmcia/ipwireless/main.h
@@ -0,0 +1,70 @@
+/*
+ * IPWireless 3G PCMCIA Network Driver
+ *
+ * Original code
+ * by Stephen Blackheath <stephen@...cksapphire.com>,
+ * Ben Martel <benm@...metric.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 isV2Card;
+ window_handle_t handleAM;
+ void __iomem *attrMemory;
+ window_handle_t handleCM;
+ void __iomem *commonMemory;
+ 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
index 0000000..ff35230
--- /dev/null
+++ b/drivers/char/pcmcia/ipwireless/network.c
@@ -0,0 +1,512 @@
+/*
+ * IPWireless 3G PCMCIA Network Driver
+ *
+ * Original code
+ * by Stephen Blackheath <stephen@...cksapphire.com>,
+ * Ben Martel <benm@...metric.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
index 0000000..b0e1e95
--- /dev/null
+++ b/drivers/char/pcmcia/ipwireless/network.h
@@ -0,0 +1,55 @@
+/*
+ * IPWireless 3G PCMCIA Network Driver
+ *
+ * Original code
+ * by Stephen Blackheath <stephen@...cksapphire.com>,
+ * Ben Martel <benm@...metric.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
index 0000000..1289219
--- /dev/null
+++ b/drivers/char/pcmcia/ipwireless/setup_protocol.h
@@ -0,0 +1,108 @@
+/*
+ * IPWireless 3G PCMCIA Network Driver
+ *
+ * Original code
+ * by Stephen Blackheath <stephen@...cksapphire.com>,
+ * Ben Martel <benm@...metric.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 TlSetupGetVersionQry {
+ unsigned char sig_no; /* TL_SETUP_SIGNO_GET_VERSION_QRY */
+} __attribute__ ((__packed__));
+
+struct TlSetupGetVersionRsp {
+ unsigned char sig_no; /* TL_SETUP_SIGNO_GET_VERSION_RSP */
+ unsigned char version; /* TL_SETUP_VERSION */
+} __attribute__ ((__packed__));
+
+struct TlSetupConfigMsg {
+ unsigned char sig_no; /* TL_SETUP_SIGNO_CONFIG_MSG */
+ unsigned char port_no;
+ unsigned char prio_data;
+ unsigned char prio_ctrl;
+} __attribute__ ((__packed__));
+
+struct TlSetupConfigDoneMsg {
+ unsigned char sig_no; /* TL_SETUP_SIGNO_CONFIG_DONE_MSG */
+} __attribute__ ((__packed__));
+
+/* Asyncronous messages */
+struct TlSetupOpenMsg {
+ unsigned char sig_no; /* TL_SETUP_SIGNO_OPEN_MSG */
+ unsigned char port_no;
+} __attribute__ ((__packed__));
+
+struct TlSetupCloseMsg {
+ unsigned char sig_no; /* TL_SETUP_SIGNO_CLOSE_MSG */
+ unsigned char port_no;
+} __attribute__ ((__packed__));
+
+/* Driver type - for use in TlSetupInfoMsg.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 TlSetupInfoMsg {
+ unsigned char sig_no; /* TL_SETUP_SIGNO_INFO_MSG */
+ unsigned char driver_type;
+ unsigned char major_version;
+ unsigned char minor_version;
+} __attribute__ ((__packed__));
+
+struct TlSetupInfoMsgAck {
+ 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 TlSetupGetVersionRsp VersRspMsg;
+ struct TlSetupOpenMsg OpenMsg;
+ struct TlSetupCloseMsg CloseMsg;
+ struct TlSetupInfoMsg InfoMsg;
+ struct TlSetupInfoMsgAck InfoMsgAck;
+} __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
index 0000000..9f67d1f
--- /dev/null
+++ b/drivers/char/pcmcia/ipwireless/tty.c
@@ -0,0 +1,688 @@
+/*
+ * IPWireless 3G PCMCIA Network Driver
+ *
+ * Original code
+ * by Stephen Blackheath <stephen@...cksapphire.com>,
+ * Ben Martel <benm@...metric.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 -1;
+ 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(int major)
+{
+ 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 = major;
+ 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
index 0000000..a678c5d
--- /dev/null
+++ b/drivers/char/pcmcia/ipwireless/tty.h
@@ -0,0 +1,48 @@
+/*
+ * IPWireless 3G PCMCIA Network Driver
+ *
+ * Original code
+ * by Stephen Blackheath <stephen@...cksapphire.com>,
+ * Ben Martel <benm@...metric.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(int);
+
+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
--
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