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path: root/drivers/char/pcmcia/ipwireless/hardware.c
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-rw-r--r--drivers/char/pcmcia/ipwireless/hardware.c1764
1 files changed, 0 insertions, 1764 deletions
diff --git a/drivers/char/pcmcia/ipwireless/hardware.c b/drivers/char/pcmcia/ipwireless/hardware.c
deleted file mode 100644
index 0aeb5a38d296..000000000000
--- a/drivers/char/pcmcia/ipwireless/hardware.c
+++ /dev/null
@@ -1,1764 +0,0 @@
-/*
- * IPWireless 3G PCMCIA Network Driver
- *
- * Original code
- * by Stephen Blackheath <stephen@blacksapphire.com>,
- * Ben Martel <benm@symmetric.co.nz>
- *
- * Copyrighted as follows:
- * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
- *
- * Various driver changes and rewrites, port to new kernels
- * Copyright (C) 2006-2007 Jiri Kosina
- *
- * Misc code cleanups and updates
- * Copyright (C) 2007 David Sterba
- */
-
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/irq.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/slab.h>
-
-#include "hardware.h"
-#include "setup_protocol.h"
-#include "network.h"
-#include "main.h"
-
-static void ipw_send_setup_packet(struct ipw_hardware *hw);
-static void handle_received_SETUP_packet(struct ipw_hardware *ipw,
- unsigned int address,
- const unsigned char *data, int len,
- int is_last);
-static void ipwireless_setup_timer(unsigned long data);
-static void handle_received_CTRL_packet(struct ipw_hardware *hw,
- unsigned int channel_idx, const unsigned char *data, int len);
-
-/*#define TIMING_DIAGNOSTICS*/
-
-#ifdef TIMING_DIAGNOSTICS
-
-static struct timing_stats {
- unsigned long last_report_time;
- unsigned long read_time;
- unsigned long write_time;
- unsigned long read_bytes;
- unsigned long write_bytes;
- unsigned long start_time;
-};
-
-static void start_timing(void)
-{
- timing_stats.start_time = jiffies;
-}
-
-static void end_read_timing(unsigned length)
-{
- timing_stats.read_time += (jiffies - start_time);
- timing_stats.read_bytes += length + 2;
- report_timing();
-}
-
-static void end_write_timing(unsigned length)
-{
- timing_stats.write_time += (jiffies - start_time);
- timing_stats.write_bytes += length + 2;
- report_timing();
-}
-
-static void report_timing(void)
-{
- unsigned long since = jiffies - timing_stats.last_report_time;
-
- /* If it's been more than one second... */
- if (since >= HZ) {
- int first = (timing_stats.last_report_time == 0);
-
- timing_stats.last_report_time = jiffies;
- if (!first)
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": %u us elapsed - read %lu bytes in %u us, wrote %lu bytes in %u us\n",
- jiffies_to_usecs(since),
- timing_stats.read_bytes,
- jiffies_to_usecs(timing_stats.read_time),
- timing_stats.write_bytes,
- jiffies_to_usecs(timing_stats.write_time));
-
- timing_stats.read_time = 0;
- timing_stats.write_time = 0;
- timing_stats.read_bytes = 0;
- timing_stats.write_bytes = 0;
- }
-}
-#else
-static void start_timing(void) { }
-static void end_read_timing(unsigned length) { }
-static void end_write_timing(unsigned length) { }
-#endif
-
-/* Imported IPW definitions */
-
-#define LL_MTU_V1 318
-#define LL_MTU_V2 250
-#define LL_MTU_MAX (LL_MTU_V1 > LL_MTU_V2 ? LL_MTU_V1 : LL_MTU_V2)
-
-#define PRIO_DATA 2
-#define PRIO_CTRL 1
-#define PRIO_SETUP 0
-
-/* Addresses */
-#define ADDR_SETUP_PROT 0
-
-/* Protocol ids */
-enum {
- /* Identifier for the Com Data protocol */
- TL_PROTOCOLID_COM_DATA = 0,
-
- /* Identifier for the Com Control protocol */
- TL_PROTOCOLID_COM_CTRL = 1,
-
- /* Identifier for the Setup protocol */
- TL_PROTOCOLID_SETUP = 2
-};
-
-/* Number of bytes in NL packet header (cannot do
- * sizeof(nl_packet_header) since it's a bitfield) */
-#define NL_FIRST_PACKET_HEADER_SIZE 3
-
-/* Number of bytes in NL packet header (cannot do
- * sizeof(nl_packet_header) since it's a bitfield) */
-#define NL_FOLLOWING_PACKET_HEADER_SIZE 1
-
-struct nl_first_packet_header {
- unsigned char protocol:3;
- unsigned char address:3;
- unsigned char packet_rank:2;
- unsigned char length_lsb;
- unsigned char length_msb;
-};
-
-struct nl_packet_header {
- unsigned char protocol:3;
- unsigned char address:3;
- unsigned char packet_rank:2;
-};
-
-/* Value of 'packet_rank' above */
-#define NL_INTERMEDIATE_PACKET 0x0
-#define NL_LAST_PACKET 0x1
-#define NL_FIRST_PACKET 0x2
-
-union nl_packet {
- /* Network packet header of the first packet (a special case) */
- struct nl_first_packet_header hdr_first;
- /* Network packet header of the following packets (if any) */
- struct nl_packet_header hdr;
- /* Complete network packet (header + data) */
- unsigned char rawpkt[LL_MTU_MAX];
-} __attribute__ ((__packed__));
-
-#define HW_VERSION_UNKNOWN -1
-#define HW_VERSION_1 1
-#define HW_VERSION_2 2
-
-/* IPW I/O ports */
-#define IOIER 0x00 /* Interrupt Enable Register */
-#define IOIR 0x02 /* Interrupt Source/ACK register */
-#define IODCR 0x04 /* Data Control Register */
-#define IODRR 0x06 /* Data Read Register */
-#define IODWR 0x08 /* Data Write Register */
-#define IOESR 0x0A /* Embedded Driver Status Register */
-#define IORXR 0x0C /* Rx Fifo Register (Host to Embedded) */
-#define IOTXR 0x0E /* Tx Fifo Register (Embedded to Host) */
-
-/* I/O ports and bit definitions for version 1 of the hardware */
-
-/* IER bits*/
-#define IER_RXENABLED 0x1
-#define IER_TXENABLED 0x2
-
-/* ISR bits */
-#define IR_RXINTR 0x1
-#define IR_TXINTR 0x2
-
-/* DCR bits */
-#define DCR_RXDONE 0x1
-#define DCR_TXDONE 0x2
-#define DCR_RXRESET 0x4
-#define DCR_TXRESET 0x8
-
-/* I/O ports and bit definitions for version 2 of the hardware */
-
-struct MEMCCR {
- unsigned short reg_config_option; /* PCCOR: Configuration Option Register */
- unsigned short reg_config_and_status; /* PCCSR: Configuration and Status Register */
- unsigned short reg_pin_replacement; /* PCPRR: Pin Replacemant Register */
- unsigned short reg_socket_and_copy; /* PCSCR: Socket and Copy Register */
- unsigned short reg_ext_status; /* PCESR: Extendend Status Register */
- unsigned short reg_io_base; /* PCIOB: I/O Base Register */
-};
-
-struct MEMINFREG {
- unsigned short memreg_tx_old; /* TX Register (R/W) */
- unsigned short pad1;
- unsigned short memreg_rx_done; /* RXDone Register (R/W) */
- unsigned short pad2;
- unsigned short memreg_rx; /* RX Register (R/W) */
- unsigned short pad3;
- unsigned short memreg_pc_interrupt_ack; /* PC intr Ack Register (W) */
- unsigned short pad4;
- unsigned long memreg_card_present;/* Mask for Host to check (R) for
- * CARD_PRESENT_VALUE */
- unsigned short memreg_tx_new; /* TX2 (new) Register (R/W) */
-};
-
-#define CARD_PRESENT_VALUE (0xBEEFCAFEUL)
-
-#define MEMTX_TX 0x0001
-#define MEMRX_RX 0x0001
-#define MEMRX_RX_DONE 0x0001
-#define MEMRX_PCINTACKK 0x0001
-
-#define NL_NUM_OF_PRIORITIES 3
-#define NL_NUM_OF_PROTOCOLS 3
-#define NL_NUM_OF_ADDRESSES NO_OF_IPW_CHANNELS
-
-struct ipw_hardware {
- unsigned int base_port;
- short hw_version;
- unsigned short ll_mtu;
- spinlock_t lock;
-
- int initializing;
- int init_loops;
- struct timer_list setup_timer;
-
- /* Flag if hw is ready to send next packet */
- int tx_ready;
- /* Count of pending packets to be sent */
- int tx_queued;
- struct list_head tx_queue[NL_NUM_OF_PRIORITIES];
-
- int rx_bytes_queued;
- struct list_head rx_queue;
- /* Pool of rx_packet structures that are not currently used. */
- struct list_head rx_pool;
- int rx_pool_size;
- /* True if reception of data is blocked while userspace processes it. */
- int blocking_rx;
- /* True if there is RX data ready on the hardware. */
- int rx_ready;
- unsigned short last_memtx_serial;
- /*
- * Newer versions of the V2 card firmware send serial numbers in the
- * MemTX register. 'serial_number_detected' is set true when we detect
- * a non-zero serial number (indicating the new firmware). Thereafter,
- * the driver can safely ignore the Timer Recovery re-sends to avoid
- * out-of-sync problems.
- */
- int serial_number_detected;
- struct work_struct work_rx;
-
- /* True if we are to send the set-up data to the hardware. */
- int to_setup;
-
- /* Card has been removed */
- int removed;
- /* Saved irq value when we disable the interrupt. */
- int irq;
- /* True if this driver is shutting down. */
- int shutting_down;
- /* Modem control lines */
- unsigned int control_lines[NL_NUM_OF_ADDRESSES];
- struct ipw_rx_packet *packet_assembler[NL_NUM_OF_ADDRESSES];
-
- struct tasklet_struct tasklet;
-
- /* The handle for the network layer, for the sending of events to it. */
- struct ipw_network *network;
- struct MEMINFREG __iomem *memory_info_regs;
- struct MEMCCR __iomem *memregs_CCR;
- void (*reboot_callback) (void *data);
- void *reboot_callback_data;
-
- unsigned short __iomem *memreg_tx;
-};
-
-/*
- * Packet info structure for tx packets.
- * Note: not all the fields defined here are required for all protocols
- */
-struct ipw_tx_packet {
- struct list_head queue;
- /* channel idx + 1 */
- unsigned char dest_addr;
- /* SETUP, CTRL or DATA */
- unsigned char protocol;
- /* Length of data block, which starts at the end of this structure */
- unsigned short length;
- /* Sending state */
- /* Offset of where we've sent up to so far */
- unsigned long offset;
- /* Count of packet fragments, starting at 0 */
- int fragment_count;
-
- /* Called after packet is sent and before is freed */
- void (*packet_callback) (void *cb_data, unsigned int packet_length);
- void *callback_data;
-};
-
-/* Signals from DTE */
-#define COMCTRL_RTS 0
-#define COMCTRL_DTR 1
-
-/* Signals from DCE */
-#define COMCTRL_CTS 2
-#define COMCTRL_DCD 3
-#define COMCTRL_DSR 4
-#define COMCTRL_RI 5
-
-struct ipw_control_packet_body {
- /* DTE signal or DCE signal */
- unsigned char sig_no;
- /* 0: set signal, 1: clear signal */
- unsigned char value;
-} __attribute__ ((__packed__));
-
-struct ipw_control_packet {
- struct ipw_tx_packet header;
- struct ipw_control_packet_body body;
-};
-
-struct ipw_rx_packet {
- struct list_head queue;
- unsigned int capacity;
- unsigned int length;
- unsigned int protocol;
- unsigned int channel_idx;
-};
-
-static char *data_type(const unsigned char *buf, unsigned length)
-{
- struct nl_packet_header *hdr = (struct nl_packet_header *) buf;
-
- if (length == 0)
- return " ";
-
- if (hdr->packet_rank & NL_FIRST_PACKET) {
- switch (hdr->protocol) {
- case TL_PROTOCOLID_COM_DATA: return "DATA ";
- case TL_PROTOCOLID_COM_CTRL: return "CTRL ";
- case TL_PROTOCOLID_SETUP: return "SETUP";
- default: return "???? ";
- }
- } else
- return " ";
-}
-
-#define DUMP_MAX_BYTES 64
-
-static void dump_data_bytes(const char *type, const unsigned char *data,
- unsigned length)
-{
- char prefix[56];
-
- sprintf(prefix, IPWIRELESS_PCCARD_NAME ": %s %s ",
- type, data_type(data, length));
- print_hex_dump_bytes(prefix, 0, (void *)data,
- length < DUMP_MAX_BYTES ? length : DUMP_MAX_BYTES);
-}
-
-static void swap_packet_bitfield_to_le(unsigned char *data)
-{
-#ifdef __BIG_ENDIAN_BITFIELD
- unsigned char tmp = *data, ret = 0;
-
- /*
- * transform bits from aa.bbb.ccc to ccc.bbb.aa
- */
- ret |= tmp & 0xc0 >> 6;
- ret |= tmp & 0x38 >> 1;
- ret |= tmp & 0x07 << 5;
- *data = ret & 0xff;
-#endif
-}
-
-static void swap_packet_bitfield_from_le(unsigned char *data)
-{
-#ifdef __BIG_ENDIAN_BITFIELD
- unsigned char tmp = *data, ret = 0;
-
- /*
- * transform bits from ccc.bbb.aa to aa.bbb.ccc
- */
- ret |= tmp & 0xe0 >> 5;
- ret |= tmp & 0x1c << 1;
- ret |= tmp & 0x03 << 6;
- *data = ret & 0xff;
-#endif
-}
-
-static void do_send_fragment(struct ipw_hardware *hw, unsigned char *data,
- unsigned length)
-{
- unsigned i;
- unsigned long flags;
-
- start_timing();
- BUG_ON(length > hw->ll_mtu);
-
- if (ipwireless_debug)
- dump_data_bytes("send", data, length);
-
- spin_lock_irqsave(&hw->lock, flags);
-
- hw->tx_ready = 0;
- swap_packet_bitfield_to_le(data);
-
- if (hw->hw_version == HW_VERSION_1) {
- outw((unsigned short) length, hw->base_port + IODWR);
-
- for (i = 0; i < length; i += 2) {
- unsigned short d = data[i];
- __le16 raw_data;
-
- if (i + 1 < length)
- d |= data[i + 1] << 8;
- raw_data = cpu_to_le16(d);
- outw(raw_data, hw->base_port + IODWR);
- }
-
- outw(DCR_TXDONE, hw->base_port + IODCR);
- } else if (hw->hw_version == HW_VERSION_2) {
- outw((unsigned short) length, hw->base_port);
-
- for (i = 0; i < length; i += 2) {
- unsigned short d = data[i];
- __le16 raw_data;
-
- if (i + 1 < length)
- d |= data[i + 1] << 8;
- raw_data = cpu_to_le16(d);
- outw(raw_data, hw->base_port);
- }
- while ((i & 3) != 2) {
- outw((unsigned short) 0xDEAD, hw->base_port);
- i += 2;
- }
- writew(MEMRX_RX, &hw->memory_info_regs->memreg_rx);
- }
-
- spin_unlock_irqrestore(&hw->lock, flags);
-
- end_write_timing(length);
-}
-
-static void do_send_packet(struct ipw_hardware *hw, struct ipw_tx_packet *packet)
-{
- unsigned short fragment_data_len;
- unsigned short data_left = packet->length - packet->offset;
- unsigned short header_size;
- union nl_packet pkt;
-
- header_size =
- (packet->fragment_count == 0)
- ? NL_FIRST_PACKET_HEADER_SIZE
- : NL_FOLLOWING_PACKET_HEADER_SIZE;
- fragment_data_len = hw->ll_mtu - header_size;
- if (data_left < fragment_data_len)
- fragment_data_len = data_left;
-
- /*
- * hdr_first is now in machine bitfield order, which will be swapped
- * to le just before it goes to hw
- */
- pkt.hdr_first.protocol = packet->protocol;
- pkt.hdr_first.address = packet->dest_addr;
- pkt.hdr_first.packet_rank = 0;
-
- /* First packet? */
- if (packet->fragment_count == 0) {
- pkt.hdr_first.packet_rank |= NL_FIRST_PACKET;
- pkt.hdr_first.length_lsb = (unsigned char) packet->length;
- pkt.hdr_first.length_msb =
- (unsigned char) (packet->length >> 8);
- }
-
- memcpy(pkt.rawpkt + header_size,
- ((unsigned char *) packet) + sizeof(struct ipw_tx_packet) +
- packet->offset, fragment_data_len);
- packet->offset += fragment_data_len;
- packet->fragment_count++;
-
- /* Last packet? (May also be first packet.) */
- if (packet->offset == packet->length)
- pkt.hdr_first.packet_rank |= NL_LAST_PACKET;
- do_send_fragment(hw, pkt.rawpkt, header_size + fragment_data_len);
-
- /* If this packet has unsent data, then re-queue it. */
- if (packet->offset < packet->length) {
- /*
- * Re-queue it at the head of the highest priority queue so
- * it goes before all other packets
- */
- unsigned long flags;
-
- spin_lock_irqsave(&hw->lock, flags);
- list_add(&packet->queue, &hw->tx_queue[0]);
- hw->tx_queued++;
- spin_unlock_irqrestore(&hw->lock, flags);
- } else {
- if (packet->packet_callback)
- packet->packet_callback(packet->callback_data,
- packet->length);
- kfree(packet);
- }
-}
-
-static void ipw_setup_hardware(struct ipw_hardware *hw)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&hw->lock, flags);
- if (hw->hw_version == HW_VERSION_1) {
- /* Reset RX FIFO */
- outw(DCR_RXRESET, hw->base_port + IODCR);
- /* SB: Reset TX FIFO */
- outw(DCR_TXRESET, hw->base_port + IODCR);
-
- /* Enable TX and RX interrupts. */
- outw(IER_TXENABLED | IER_RXENABLED, hw->base_port + IOIER);
- } else {
- /*
- * Set INTRACK bit (bit 0), which means we must explicitly
- * acknowledge interrupts by clearing bit 2 of reg_config_and_status.
- */
- unsigned short csr = readw(&hw->memregs_CCR->reg_config_and_status);
-
- csr |= 1;
- writew(csr, &hw->memregs_CCR->reg_config_and_status);
- }
- spin_unlock_irqrestore(&hw->lock, flags);
-}
-
-/*
- * If 'packet' is NULL, then this function allocates a new packet, setting its
- * length to 0 and ensuring it has the specified minimum amount of free space.
- *
- * If 'packet' is not NULL, then this function enlarges it if it doesn't
- * have the specified minimum amount of free space.
- *
- */
-static struct ipw_rx_packet *pool_allocate(struct ipw_hardware *hw,
- struct ipw_rx_packet *packet,
- int minimum_free_space)
-{
-
- if (!packet) {
- unsigned long flags;
-
- spin_lock_irqsave(&hw->lock, flags);
- if (!list_empty(&hw->rx_pool)) {
- packet = list_first_entry(&hw->rx_pool,
- struct ipw_rx_packet, queue);
- hw->rx_pool_size--;
- spin_unlock_irqrestore(&hw->lock, flags);
- list_del(&packet->queue);
- } else {
- const int min_capacity =
- ipwireless_ppp_mru(hw->network) + 2;
- int new_capacity;
-
- spin_unlock_irqrestore(&hw->lock, flags);
- new_capacity =
- (minimum_free_space > min_capacity
- ? minimum_free_space
- : min_capacity);
- packet = kmalloc(sizeof(struct ipw_rx_packet)
- + new_capacity, GFP_ATOMIC);
- if (!packet)
- return NULL;
- packet->capacity = new_capacity;
- }
- packet->length = 0;
- }
-
- if (packet->length + minimum_free_space > packet->capacity) {
- struct ipw_rx_packet *old_packet = packet;
-
- packet = kmalloc(sizeof(struct ipw_rx_packet) +
- old_packet->length + minimum_free_space,
- GFP_ATOMIC);
- if (!packet) {
- kfree(old_packet);
- return NULL;
- }
- memcpy(packet, old_packet,
- sizeof(struct ipw_rx_packet)
- + old_packet->length);
- packet->capacity = old_packet->length + minimum_free_space;
- kfree(old_packet);
- }
-
- return packet;
-}
-
-static void pool_free(struct ipw_hardware *hw, struct ipw_rx_packet *packet)
-{
- if (hw->rx_pool_size > 6)
- kfree(packet);
- else {
- hw->rx_pool_size++;
- list_add(&packet->queue, &hw->rx_pool);
- }
-}
-
-static void queue_received_packet(struct ipw_hardware *hw,
- unsigned int protocol,
- unsigned int address,
- const unsigned char *data, int length,
- int is_last)
-{
- unsigned int channel_idx = address - 1;
- struct ipw_rx_packet *packet = NULL;
- unsigned long flags;
-
- /* Discard packet if channel index is out of range. */
- if (channel_idx >= NL_NUM_OF_ADDRESSES) {
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": data packet has bad address %u\n", address);
- return;
- }
-
- /*
- * ->packet_assembler is safe to touch unlocked, this is the only place
- */
- if (protocol == TL_PROTOCOLID_COM_DATA) {
- struct ipw_rx_packet **assem =
- &hw->packet_assembler[channel_idx];
-
- /*
- * Create a new packet, or assembler already contains one
- * enlarge it by 'length' bytes.
- */
- (*assem) = pool_allocate(hw, *assem, length);
- if (!(*assem)) {
- printk(KERN_ERR IPWIRELESS_PCCARD_NAME
- ": no memory for incomming data packet, dropped!\n");
- return;
- }
- (*assem)->protocol = protocol;
- (*assem)->channel_idx = channel_idx;
-
- /* Append this packet data onto existing data. */
- memcpy((unsigned char *)(*assem) +
- sizeof(struct ipw_rx_packet)
- + (*assem)->length, data, length);
- (*assem)->length += length;
- if (is_last) {
- packet = *assem;
- *assem = NULL;
- /* Count queued DATA bytes only */
- spin_lock_irqsave(&hw->lock, flags);
- hw->rx_bytes_queued += packet->length;
- spin_unlock_irqrestore(&hw->lock, flags);
- }
- } else {
- /* If it's a CTRL packet, don't assemble, just queue it. */
- packet = pool_allocate(hw, NULL, length);
- if (!packet) {
- printk(KERN_ERR IPWIRELESS_PCCARD_NAME
- ": no memory for incomming ctrl packet, dropped!\n");
- return;
- }
- packet->protocol = protocol;
- packet->channel_idx = channel_idx;
- memcpy((unsigned char *)packet + sizeof(struct ipw_rx_packet),
- data, length);
- packet->length = length;
- }
-
- /*
- * If this is the last packet, then send the assembled packet on to the
- * network layer.
- */
- if (packet) {
- spin_lock_irqsave(&hw->lock, flags);
- list_add_tail(&packet->queue, &hw->rx_queue);
- /* Block reception of incoming packets if queue is full. */
- hw->blocking_rx =
- (hw->rx_bytes_queued >= IPWIRELESS_RX_QUEUE_SIZE);
-
- spin_unlock_irqrestore(&hw->lock, flags);
- schedule_work(&hw->work_rx);
- }
-}
-
-/*
- * Workqueue callback
- */
-static void ipw_receive_data_work(struct work_struct *work_rx)
-{
- struct ipw_hardware *hw =
- container_of(work_rx, struct ipw_hardware, work_rx);
- unsigned long flags;
-
- spin_lock_irqsave(&hw->lock, flags);
- while (!list_empty(&hw->rx_queue)) {
- struct ipw_rx_packet *packet =
- list_first_entry(&hw->rx_queue,
- struct ipw_rx_packet, queue);
-
- if (hw->shutting_down)
- break;
- list_del(&packet->queue);
-
- /*
- * Note: ipwireless_network_packet_received must be called in a
- * process context (i.e. via schedule_work) because the tty
- * output code can sleep in the tty_flip_buffer_push call.
- */
- if (packet->protocol == TL_PROTOCOLID_COM_DATA) {
- if (hw->network != NULL) {
- /* If the network hasn't been disconnected. */
- spin_unlock_irqrestore(&hw->lock, flags);
- /*
- * This must run unlocked due to tty processing
- * and mutex locking
- */
- ipwireless_network_packet_received(
- hw->network,
- packet->channel_idx,
- (unsigned char *)packet
- + sizeof(struct ipw_rx_packet),
- packet->length);
- spin_lock_irqsave(&hw->lock, flags);
- }
- /* Count queued DATA bytes only */
- hw->rx_bytes_queued -= packet->length;
- } else {
- /*
- * This is safe to be called locked, callchain does
- * not block
- */
- handle_received_CTRL_packet(hw, packet->channel_idx,
- (unsigned char *)packet
- + sizeof(struct ipw_rx_packet),
- packet->length);
- }
- pool_free(hw, packet);
- /*
- * Unblock reception of incoming packets if queue is no longer
- * full.
- */
- hw->blocking_rx =
- hw->rx_bytes_queued >= IPWIRELESS_RX_QUEUE_SIZE;
- if (hw->shutting_down)
- break;
- }
- spin_unlock_irqrestore(&hw->lock, flags);
-}
-
-static void handle_received_CTRL_packet(struct ipw_hardware *hw,
- unsigned int channel_idx,
- const unsigned char *data, int len)
-{
- const struct ipw_control_packet_body *body =
- (const struct ipw_control_packet_body *) data;
- unsigned int changed_mask;
-
- if (len != sizeof(struct ipw_control_packet_body)) {
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": control packet was %d bytes - wrong size!\n",
- len);
- return;
- }
-
- switch (body->sig_no) {
- case COMCTRL_CTS:
- changed_mask = IPW_CONTROL_LINE_CTS;
- break;
- case COMCTRL_DCD:
- changed_mask = IPW_CONTROL_LINE_DCD;
- break;
- case COMCTRL_DSR:
- changed_mask = IPW_CONTROL_LINE_DSR;
- break;
- case COMCTRL_RI:
- changed_mask = IPW_CONTROL_LINE_RI;
- break;
- default:
- changed_mask = 0;
- }
-
- if (changed_mask != 0) {
- if (body->value)
- hw->control_lines[channel_idx] |= changed_mask;
- else
- hw->control_lines[channel_idx] &= ~changed_mask;
- if (hw->network)
- ipwireless_network_notify_control_line_change(
- hw->network,
- channel_idx,
- hw->control_lines[channel_idx],
- changed_mask);
- }
-}
-
-static void handle_received_packet(struct ipw_hardware *hw,
- const union nl_packet *packet,
- unsigned short len)
-{
- unsigned int protocol = packet->hdr.protocol;
- unsigned int address = packet->hdr.address;
- unsigned int header_length;
- const unsigned char *data;
- unsigned int data_len;
- int is_last = packet->hdr.packet_rank & NL_LAST_PACKET;
-
- if (packet->hdr.packet_rank & NL_FIRST_PACKET)
- header_length = NL_FIRST_PACKET_HEADER_SIZE;
- else
- header_length = NL_FOLLOWING_PACKET_HEADER_SIZE;
-
- data = packet->rawpkt + header_length;
- data_len = len - header_length;
- switch (protocol) {
- case TL_PROTOCOLID_COM_DATA:
- case TL_PROTOCOLID_COM_CTRL:
- queue_received_packet(hw, protocol, address, data, data_len,
- is_last);
- break;
- case TL_PROTOCOLID_SETUP:
- handle_received_SETUP_packet(hw, address, data, data_len,
- is_last);
- break;
- }
-}
-
-static void acknowledge_data_read(struct ipw_hardware *hw)
-{
- if (hw->hw_version == HW_VERSION_1)
- outw(DCR_RXDONE, hw->base_port + IODCR);
- else
- writew(MEMRX_PCINTACKK,
- &hw->memory_info_regs->memreg_pc_interrupt_ack);
-}
-
-/*
- * Retrieve a packet from the IPW hardware.
- */
-static void do_receive_packet(struct ipw_hardware *hw)
-{
- unsigned len;
- unsigned i;
- unsigned char pkt[LL_MTU_MAX];
-
- start_timing();
-
- if (hw->hw_version == HW_VERSION_1) {
- len = inw(hw->base_port + IODRR);
- if (len > hw->ll_mtu) {
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": received a packet of %u bytes - longer than the MTU!\n", len);
- outw(DCR_RXDONE | DCR_RXRESET, hw->base_port + IODCR);
- return;
- }
-
- for (i = 0; i < len; i += 2) {
- __le16 raw_data = inw(hw->base_port + IODRR);
- unsigned short data = le16_to_cpu(raw_data);
-
- pkt[i] = (unsigned char) data;
- pkt[i + 1] = (unsigned char) (data >> 8);
- }
- } else {
- len = inw(hw->base_port);
- if (len > hw->ll_mtu) {
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": received a packet of %u bytes - longer than the MTU!\n", len);
- writew(MEMRX_PCINTACKK,
- &hw->memory_info_regs->memreg_pc_interrupt_ack);
- return;
- }
-
- for (i = 0; i < len; i += 2) {
- __le16 raw_data = inw(hw->base_port);
- unsigned short data = le16_to_cpu(raw_data);
-
- pkt[i] = (unsigned char) data;
- pkt[i + 1] = (unsigned char) (data >> 8);
- }
-
- while ((i & 3) != 2) {
- inw(hw->base_port);
- i += 2;
- }
- }
-
- acknowledge_data_read(hw);
-
- swap_packet_bitfield_from_le(pkt);
-
- if (ipwireless_debug)
- dump_data_bytes("recv", pkt, len);
-
- handle_received_packet(hw, (union nl_packet *) pkt, len);
-
- end_read_timing(len);
-}
-
-static int get_current_packet_priority(struct ipw_hardware *hw)
-{
- /*
- * If we're initializing, don't send anything of higher priority than
- * PRIO_SETUP. The network layer therefore need not care about
- * hardware initialization - any of its stuff will simply be queued
- * until setup is complete.
- */
- return (hw->to_setup || hw->initializing
- ? PRIO_SETUP + 1 : NL_NUM_OF_PRIORITIES);
-}
-
-/*
- * return 1 if something has been received from hw
- */
-static int get_packets_from_hw(struct ipw_hardware *hw)
-{
- int received = 0;
- unsigned long flags;
-
- spin_lock_irqsave(&hw->lock, flags);
- while (hw->rx_ready && !hw->blocking_rx) {
- received = 1;
- hw->rx_ready--;
- spin_unlock_irqrestore(&hw->lock, flags);
-
- do_receive_packet(hw);
-
- spin_lock_irqsave(&hw->lock, flags);
- }
- spin_unlock_irqrestore(&hw->lock, flags);
-
- return received;
-}
-
-/*
- * Send pending packet up to given priority, prioritize SETUP data until
- * hardware is fully setup.
- *
- * return 1 if more packets can be sent
- */
-static int send_pending_packet(struct ipw_hardware *hw, int priority_limit)
-{
- int more_to_send = 0;
- unsigned long flags;
-
- spin_lock_irqsave(&hw->lock, flags);
- if (hw->tx_queued && hw->tx_ready) {
- int priority;
- struct ipw_tx_packet *packet = NULL;
-
- /* Pick a packet */
- for (priority = 0; priority < priority_limit; priority++) {
- if (!list_empty(&hw->tx_queue[priority])) {
- packet = list_first_entry(
- &hw->tx_queue[priority],
- struct ipw_tx_packet,
- queue);
-
- hw->tx_queued--;
- list_del(&packet->queue);
-
- break;
- }
- }
- if (!packet) {
- hw->tx_queued = 0;
- spin_unlock_irqrestore(&hw->lock, flags);
- return 0;
- }
-
- spin_unlock_irqrestore(&hw->lock, flags);
-
- /* Send */
- do_send_packet(hw, packet);
-
- /* Check if more to send */
- spin_lock_irqsave(&hw->lock, flags);
- for (priority = 0; priority < priority_limit; priority++)
- if (!list_empty(&hw->tx_queue[priority])) {
- more_to_send = 1;
- break;
- }
-
- if (!more_to_send)
- hw->tx_queued = 0;
- }
- spin_unlock_irqrestore(&hw->lock, flags);
-
- return more_to_send;
-}
-
-/*
- * Send and receive all queued packets.
- */
-static void ipwireless_do_tasklet(unsigned long hw_)
-{
- struct ipw_hardware *hw = (struct ipw_hardware *) hw_;
- unsigned long flags;
-
- spin_lock_irqsave(&hw->lock, flags);
- if (hw->shutting_down) {
- spin_unlock_irqrestore(&hw->lock, flags);
- return;
- }
-
- if (hw->to_setup == 1) {
- /*
- * Initial setup data sent to hardware
- */
- hw->to_setup = 2;
- spin_unlock_irqrestore(&hw->lock, flags);
-
- ipw_setup_hardware(hw);
- ipw_send_setup_packet(hw);
-
- send_pending_packet(hw, PRIO_SETUP + 1);
- get_packets_from_hw(hw);
- } else {
- int priority_limit = get_current_packet_priority(hw);
- int again;
-
- spin_unlock_irqrestore(&hw->lock, flags);
-
- do {
- again = send_pending_packet(hw, priority_limit);
- again |= get_packets_from_hw(hw);
- } while (again);
- }
-}
-
-/*
- * return true if the card is physically present.
- */
-static int is_card_present(struct ipw_hardware *hw)
-{
- if (hw->hw_version == HW_VERSION_1)
- return inw(hw->base_port + IOIR) != 0xFFFF;
- else
- return readl(&hw->memory_info_regs->memreg_card_present) ==
- CARD_PRESENT_VALUE;
-}
-
-static irqreturn_t ipwireless_handle_v1_interrupt(int irq,
- struct ipw_hardware *hw)
-{
- unsigned short irqn;
-
- irqn = inw(hw->base_port + IOIR);
-
- /* Check if card is present */
- if (irqn == 0xFFFF)
- return IRQ_NONE;
- else if (irqn != 0) {
- unsigned short ack = 0;
- unsigned long flags;
-
- /* Transmit complete. */
- if (irqn & IR_TXINTR) {
- ack |= IR_TXINTR;
- spin_lock_irqsave(&hw->lock, flags);
- hw->tx_ready = 1;
- spin_unlock_irqrestore(&hw->lock, flags);
- }
- /* Received data */
- if (irqn & IR_RXINTR) {
- ack |= IR_RXINTR;
- spin_lock_irqsave(&hw->lock, flags);
- hw->rx_ready++;
- spin_unlock_irqrestore(&hw->lock, flags);
- }
- if (ack != 0) {
- outw(ack, hw->base_port + IOIR);
- tasklet_schedule(&hw->tasklet);
- }
- return IRQ_HANDLED;
- }
- return IRQ_NONE;
-}
-
-static void acknowledge_pcmcia_interrupt(struct ipw_hardware *hw)
-{
- unsigned short csr = readw(&hw->memregs_CCR->reg_config_and_status);
-
- csr &= 0xfffd;
- writew(csr, &hw->memregs_CCR->reg_config_and_status);
-}
-
-static irqreturn_t ipwireless_handle_v2_v3_interrupt(int irq,
- struct ipw_hardware *hw)
-{
- int tx = 0;
- int rx = 0;
- int rx_repeat = 0;
- int try_mem_tx_old;
- unsigned long flags;
-
- do {
-
- unsigned short memtx = readw(hw->memreg_tx);
- unsigned short memtx_serial;
- unsigned short memrxdone =
- readw(&hw->memory_info_regs->memreg_rx_done);
-
- try_mem_tx_old = 0;
-
- /* check whether the interrupt was generated by ipwireless card */
- if (!(memtx & MEMTX_TX) && !(memrxdone & MEMRX_RX_DONE)) {
-
- /* check if the card uses memreg_tx_old register */
- if (hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) {
- memtx = readw(&hw->memory_info_regs->memreg_tx_old);
- if (memtx & MEMTX_TX) {
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": Using memreg_tx_old\n");
- hw->memreg_tx =
- &hw->memory_info_regs->memreg_tx_old;
- } else {
- return IRQ_NONE;
- }
- } else
- return IRQ_NONE;
- }
-
- /*
- * See if the card is physically present. Note that while it is
- * powering up, it appears not to be present.
- */
- if (!is_card_present(hw)) {
- acknowledge_pcmcia_interrupt(hw);
- return IRQ_HANDLED;
- }
-
- memtx_serial = memtx & (unsigned short) 0xff00;
- if (memtx & MEMTX_TX) {
- writew(memtx_serial, hw->memreg_tx);
-
- if (hw->serial_number_detected) {
- if (memtx_serial != hw->last_memtx_serial) {
- hw->last_memtx_serial = memtx_serial;
- spin_lock_irqsave(&hw->lock, flags);
- hw->rx_ready++;
- spin_unlock_irqrestore(&hw->lock, flags);
- rx = 1;
- } else
- /* Ignore 'Timer Recovery' duplicates. */
- rx_repeat = 1;
- } else {
- /*
- * If a non-zero serial number is seen, then enable
- * serial number checking.
- */
- if (memtx_serial != 0) {
- hw->serial_number_detected = 1;
- printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
- ": memreg_tx serial num detected\n");
-
- spin_lock_irqsave(&hw->lock, flags);
- hw->rx_ready++;
- spin_unlock_irqrestore(&hw->lock, flags);
- }
- rx = 1;
- }
- }
- if (memrxdone & MEMRX_RX_DONE) {
- writew(0, &hw->memory_info_regs->memreg_rx_done);
- spin_lock_irqsave(&hw->lock, flags);
- hw->tx_ready = 1;
- spin_unlock_irqrestore(&hw->lock, flags);
- tx = 1;
- }
- if (tx)
- writew(MEMRX_PCINTACKK,
- &hw->memory_info_regs->memreg_pc_interrupt_ack);
-
- acknowledge_pcmcia_interrupt(hw);
-
- if (tx || rx)
- tasklet_schedule(&hw->tasklet);
- else if (!rx_repeat) {
- if (hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) {
- if (hw->serial_number_detected)
- printk(KERN_WARNING IPWIRELESS_PCCARD_NAME
- ": spurious interrupt - new_tx mode\n");
- else {
- printk(KERN_WARNING IPWIRELESS_PCCARD_NAME
- ": no valid memreg_tx value - switching to the old memreg_tx\n");
- hw->memreg_tx =
- &hw->memory_info_regs->memreg_tx_old;
- try_mem_tx_old = 1;
- }
- } else
- printk(KERN_WARNING IPWIRELESS_PCCARD_NAME
- ": spurious interrupt - old_tx mode\n");
- }
-
- } while (try_mem_tx_old == 1);
-
- return IRQ_HANDLED;
-}
-
-irqreturn_t ipwireless_interrupt(int irq, void *dev_id)
-{
- struct ipw_dev *ipw = dev_id;
-
- if (ipw->hardware->hw_version == HW_VERSION_1)
- return ipwireless_handle_v1_interrupt(irq, ipw->hardware);
- else
- return ipwireless_handle_v2_v3_interrupt(irq, ipw->hardware);
-}
-
-static void flush_packets_to_hw(struct ipw_hardware *hw)
-{
- int priority_limit;
- unsigned long flags;
-
- spin_lock_irqsave(&hw->lock, flags);
- priority_limit = get_current_packet_priority(hw);
- spin_unlock_irqrestore(&hw->lock, flags);
-
- while (send_pending_packet(hw, priority_limit));
-}
-
-static void send_packet(struct ipw_hardware *hw, int priority,
- struct ipw_tx_packet *packet)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&hw->lock, flags);
- list_add_tail(&packet->queue, &hw->tx_queue[priority]);
- hw->tx_queued++;
- spin_unlock_irqrestore(&hw->lock, flags);
-
- flush_packets_to_hw(hw);
-}
-
-/* Create data packet, non-atomic allocation */
-static void *alloc_data_packet(int data_size,
- unsigned char dest_addr,
- unsigned char protocol)
-{
- struct ipw_tx_packet *packet = kzalloc(
- sizeof(struct ipw_tx_packet) + data_size,
- GFP_ATOMIC);
-
- if (!packet)
- return NULL;
-
- INIT_LIST_HEAD(&packet->queue);
- packet->dest_addr = dest_addr;
- packet->protocol = protocol;
- packet->length = data_size;
-
- return packet;
-}
-
-static void *alloc_ctrl_packet(int header_size,
- unsigned char dest_addr,
- unsigned char protocol,
- unsigned char sig_no)
-{
- /*
- * sig_no is located right after ipw_tx_packet struct in every
- * CTRL or SETUP packets, we can use ipw_control_packet as a
- * common struct
- */
- struct ipw_control_packet *packet = kzalloc(header_size, GFP_ATOMIC);
-
- if (!packet)
- return NULL;
-
- INIT_LIST_HEAD(&packet->header.queue);
- packet->header.dest_addr = dest_addr;
- packet->header.protocol = protocol;
- packet->header.length = header_size - sizeof(struct ipw_tx_packet);
- packet->body.sig_no = sig_no;
-
- return packet;
-}
-
-int ipwireless_send_packet(struct ipw_hardware *hw, unsigned int channel_idx,
- const unsigned char *data, unsigned int length,
- void (*callback) (void *cb, unsigned int length),
- void *callback_data)
-{
- struct ipw_tx_packet *packet;
-
- packet = alloc_data_packet(length, (channel_idx + 1),
- TL_PROTOCOLID_COM_DATA);
- if (!packet)
- return -ENOMEM;
- packet->packet_callback = callback;
- packet->callback_data = callback_data;
- memcpy((unsigned char *) packet + sizeof(struct ipw_tx_packet), data,
- length);
-
- send_packet(hw, PRIO_DATA, packet);
- return 0;
-}
-
-static int set_control_line(struct ipw_hardware *hw, int prio,
- unsigned int channel_idx, int line, int state)
-{
- struct ipw_control_packet *packet;
- int protocolid = TL_PROTOCOLID_COM_CTRL;
-
- if (prio == PRIO_SETUP)
- protocolid = TL_PROTOCOLID_SETUP;
-
- packet = alloc_ctrl_packet(sizeof(struct ipw_control_packet),
- (channel_idx + 1), protocolid, line);
- if (!packet)
- return -ENOMEM;
- packet->header.length = sizeof(struct ipw_control_packet_body);
- packet->body.value = (state == 0 ? 0 : 1);
- send_packet(hw, prio, &packet->header);
- return 0;
-}
-
-
-static int set_DTR(struct ipw_hardware *hw, int priority,
- unsigned int channel_idx, int state)
-{
- if (state != 0)
- hw->control_lines[channel_idx] |= IPW_CONTROL_LINE_DTR;
- else
- hw->control_lines[channel_idx] &= ~IPW_CONTROL_LINE_DTR;
-
- return set_control_line(hw, priority, channel_idx, COMCTRL_DTR, state);
-}
-
-static int set_RTS(struct ipw_hardware *hw, int priority,
- unsigned int channel_idx, int state)
-{
- if (state != 0)
- hw->control_lines[channel_idx] |= IPW_CONTROL_LINE_RTS;
- else
- hw->control_lines[channel_idx] &= ~IPW_CONTROL_LINE_RTS;
-
- return set_control_line(hw, priority, channel_idx, COMCTRL_RTS, state);
-}
-
-int ipwireless_set_DTR(struct ipw_hardware *hw, unsigned int channel_idx,
- int state)
-{
- return set_DTR(hw, PRIO_CTRL, channel_idx, state);
-}
-
-int ipwireless_set_RTS(struct ipw_hardware *hw, unsigned int channel_idx,
- int state)
-{
- return set_RTS(hw, PRIO_CTRL, channel_idx, state);
-}
-
-struct ipw_setup_get_version_query_packet {
- struct ipw_tx_packet header;
- struct tl_setup_get_version_qry body;
-};
-
-struct ipw_setup_config_packet {
- struct ipw_tx_packet header;
- struct tl_setup_config_msg body;
-};
-
-struct ipw_setup_config_done_packet {
- struct ipw_tx_packet header;
- struct tl_setup_config_done_msg body;
-};
-
-struct ipw_setup_open_packet {
- struct ipw_tx_packet header;
- struct tl_setup_open_msg body;
-};
-
-struct ipw_setup_info_packet {
- struct ipw_tx_packet header;
- struct tl_setup_info_msg body;
-};
-
-struct ipw_setup_reboot_msg_ack {
- struct ipw_tx_packet header;
- struct TlSetupRebootMsgAck body;
-};
-
-/* This handles the actual initialization of the card */
-static void __handle_setup_get_version_rsp(struct ipw_hardware *hw)
-{
- struct ipw_setup_config_packet *config_packet;
- struct ipw_setup_config_done_packet *config_done_packet;
- struct ipw_setup_open_packet *open_packet;
- struct ipw_setup_info_packet *info_packet;
- int port;
- unsigned int channel_idx;
-
- /* generate config packet */
- for (port = 1; port <= NL_NUM_OF_ADDRESSES; port++) {
- config_packet = alloc_ctrl_packet(
- sizeof(struct ipw_setup_config_packet),
- ADDR_SETUP_PROT,
- TL_PROTOCOLID_SETUP,
- TL_SETUP_SIGNO_CONFIG_MSG);
- if (!config_packet)
- goto exit_nomem;
- config_packet->header.length = sizeof(struct tl_setup_config_msg);
- config_packet->body.port_no = port;
- config_packet->body.prio_data = PRIO_DATA;
- config_packet->body.prio_ctrl = PRIO_CTRL;
- send_packet(hw, PRIO_SETUP, &config_packet->header);
- }
- config_done_packet = alloc_ctrl_packet(
- sizeof(struct ipw_setup_config_done_packet),
- ADDR_SETUP_PROT,
- TL_PROTOCOLID_SETUP,
- TL_SETUP_SIGNO_CONFIG_DONE_MSG);
- if (!config_done_packet)
- goto exit_nomem;
- config_done_packet->header.length = sizeof(struct tl_setup_config_done_msg);
- send_packet(hw, PRIO_SETUP, &config_done_packet->header);
-
- /* generate open packet */
- for (port = 1; port <= NL_NUM_OF_ADDRESSES; port++) {
- open_packet = alloc_ctrl_packet(
- sizeof(struct ipw_setup_open_packet),
- ADDR_SETUP_PROT,
- TL_PROTOCOLID_SETUP,
- TL_SETUP_SIGNO_OPEN_MSG);
- if (!open_packet)
- goto exit_nomem;
- open_packet->header.length = sizeof(struct tl_setup_open_msg);
- open_packet->body.port_no = port;
- send_packet(hw, PRIO_SETUP, &open_packet->header);
- }
- for (channel_idx = 0;
- channel_idx < NL_NUM_OF_ADDRESSES; channel_idx++) {
- int ret;
-
- ret = set_DTR(hw, PRIO_SETUP, channel_idx,
- (hw->control_lines[channel_idx] &
- IPW_CONTROL_LINE_DTR) != 0);
- if (ret) {
- printk(KERN_ERR IPWIRELESS_PCCARD_NAME
- ": error setting DTR (%d)\n", ret);
- return;
- }
-
- set_RTS(hw, PRIO_SETUP, channel_idx,
- (hw->control_lines [channel_idx] &
- IPW_CONTROL_LINE_RTS) != 0);
- if (ret) {
- printk(KERN_ERR IPWIRELESS_PCCARD_NAME
- ": error setting RTS (%d)\n", ret);
- return;
- }
- }
- /*
- * For NDIS we assume that we are using sync PPP frames, for COM async.
- * This driver uses NDIS mode too. We don't bother with translation
- * from async -> sync PPP.
- */
- info_packet = alloc_ctrl_packet(sizeof(struct ipw_setup_info_packet),
- ADDR_SETUP_PROT,
- TL_PROTOCOLID_SETUP,
- TL_SETUP_SIGNO_INFO_MSG);
- if (!info_packet)
- goto exit_nomem;
- info_packet->header.length = sizeof(struct tl_setup_info_msg);
- info_packet->body.driver_type = NDISWAN_DRIVER;
- info_packet->body.major_version = NDISWAN_DRIVER_MAJOR_VERSION;
- info_packet->body.minor_version = NDISWAN_DRIVER_MINOR_VERSION;
- send_packet(hw, PRIO_SETUP, &info_packet->header);
-
- /* Initialization is now complete, so we clear the 'to_setup' flag */
- hw->to_setup = 0;
-
- return;
-
-exit_nomem:
- printk(KERN_ERR IPWIRELESS_PCCARD_NAME
- ": not enough memory to alloc control packet\n");
- hw->to_setup = -1;
-}
-
-static void handle_setup_get_version_rsp(struct ipw_hardware *hw,
- unsigned char vers_no)
-{
- del_timer(&hw->setup_timer);
- hw->initializing = 0;
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME ": card is ready.\n");
-
- if (vers_no == TL_SETUP_VERSION)
- __handle_setup_get_version_rsp(hw);
- else
- printk(KERN_ERR IPWIRELESS_PCCARD_NAME
- ": invalid hardware version no %u\n",
- (unsigned int) vers_no);
-}
-
-static void ipw_send_setup_packet(struct ipw_hardware *hw)
-{
- struct ipw_setup_get_version_query_packet *ver_packet;
-
- ver_packet = alloc_ctrl_packet(
- sizeof(struct ipw_setup_get_version_query_packet),
- ADDR_SETUP_PROT, TL_PROTOCOLID_SETUP,
- TL_SETUP_SIGNO_GET_VERSION_QRY);
- ver_packet->header.length = sizeof(struct tl_setup_get_version_qry);
-
- /*
- * Response is handled in handle_received_SETUP_packet
- */
- send_packet(hw, PRIO_SETUP, &ver_packet->header);
-}
-
-static void handle_received_SETUP_packet(struct ipw_hardware *hw,
- unsigned int address,
- const unsigned char *data, int len,
- int is_last)
-{
- const union ipw_setup_rx_msg *rx_msg = (const union ipw_setup_rx_msg *) data;
-
- if (address != ADDR_SETUP_PROT) {
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": setup packet has bad address %d\n", address);
- return;
- }
-
- switch (rx_msg->sig_no) {
- case TL_SETUP_SIGNO_GET_VERSION_RSP:
- if (hw->to_setup)
- handle_setup_get_version_rsp(hw,
- rx_msg->version_rsp_msg.version);
- break;
-
- case TL_SETUP_SIGNO_OPEN_MSG:
- if (ipwireless_debug) {
- unsigned int channel_idx = rx_msg->open_msg.port_no - 1;
-
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": OPEN_MSG [channel %u] reply received\n",
- channel_idx);
- }
- break;
-
- case TL_SETUP_SIGNO_INFO_MSG_ACK:
- if (ipwireless_debug)
- printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
- ": card successfully configured as NDISWAN\n");
- break;
-
- case TL_SETUP_SIGNO_REBOOT_MSG:
- if (hw->to_setup)
- printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
- ": Setup not completed - ignoring reboot msg\n");
- else {
- struct ipw_setup_reboot_msg_ack *packet;
-
- printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
- ": Acknowledging REBOOT message\n");
- packet = alloc_ctrl_packet(
- sizeof(struct ipw_setup_reboot_msg_ack),
- ADDR_SETUP_PROT, TL_PROTOCOLID_SETUP,
- TL_SETUP_SIGNO_REBOOT_MSG_ACK);
- packet->header.length =
- sizeof(struct TlSetupRebootMsgAck);
- send_packet(hw, PRIO_SETUP, &packet->header);
- if (hw->reboot_callback)
- hw->reboot_callback(hw->reboot_callback_data);
- }
- break;
-
- default:
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": unknown setup message %u received\n",
- (unsigned int) rx_msg->sig_no);
- }
-}
-
-static void do_close_hardware(struct ipw_hardware *hw)
-{
- unsigned int irqn;
-
- if (hw->hw_version == HW_VERSION_1) {
- /* Disable TX and RX interrupts. */
- outw(0, hw->base_port + IOIER);
-
- /* Acknowledge any outstanding interrupt requests */
- irqn = inw(hw->base_port + IOIR);
- if (irqn & IR_TXINTR)
- outw(IR_TXINTR, hw->base_port + IOIR);
- if (irqn & IR_RXINTR)
- outw(IR_RXINTR, hw->base_port + IOIR);
-
- synchronize_irq(hw->irq);
- }
-}
-
-struct ipw_hardware *ipwireless_hardware_create(void)
-{
- int i;
- struct ipw_hardware *hw =
- kzalloc(sizeof(struct ipw_hardware), GFP_KERNEL);
-
- if (!hw)
- return NULL;
-
- hw->irq = -1;
- hw->initializing = 1;
- hw->tx_ready = 1;
- hw->rx_bytes_queued = 0;
- hw->rx_pool_size = 0;
- hw->last_memtx_serial = (unsigned short) 0xffff;
- for (i = 0; i < NL_NUM_OF_PRIORITIES; i++)
- INIT_LIST_HEAD(&hw->tx_queue[i]);
-
- INIT_LIST_HEAD(&hw->rx_queue);
- INIT_LIST_HEAD(&hw->rx_pool);
- spin_lock_init(&hw->lock);
- tasklet_init(&hw->tasklet, ipwireless_do_tasklet, (unsigned long) hw);
- INIT_WORK(&hw->work_rx, ipw_receive_data_work);
- setup_timer(&hw->setup_timer, ipwireless_setup_timer,
- (unsigned long) hw);
-
- return hw;
-}
-
-void ipwireless_init_hardware_v1(struct ipw_hardware *hw,
- unsigned int base_port,
- void __iomem *attr_memory,
- void __iomem *common_memory,
- int is_v2_card,
- void (*reboot_callback) (void *data),
- void *reboot_callback_data)
-{
- if (hw->removed) {
- hw->removed = 0;
- enable_irq(hw->irq);
- }
- hw->base_port = base_port;
- hw->hw_version = (is_v2_card ? HW_VERSION_2 : HW_VERSION_1);
- hw->ll_mtu = (hw->hw_version == HW_VERSION_1 ? LL_MTU_V1 : LL_MTU_V2);
- hw->memregs_CCR = (struct MEMCCR __iomem *)
- ((unsigned short __iomem *) attr_memory + 0x200);
- hw->memory_info_regs = (struct MEMINFREG __iomem *) common_memory;
- hw->memreg_tx = &hw->memory_info_regs->memreg_tx_new;
- hw->reboot_callback = reboot_callback;
- hw->reboot_callback_data = reboot_callback_data;
-}
-
-void ipwireless_init_hardware_v2_v3(struct ipw_hardware *hw)
-{
- hw->initializing = 1;
- hw->init_loops = 0;
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": waiting for card to start up...\n");
- ipwireless_setup_timer((unsigned long) hw);
-}
-
-static void ipwireless_setup_timer(unsigned long data)
-{
- struct ipw_hardware *hw = (struct ipw_hardware *) data;
-
- hw->init_loops++;
-
- if (hw->init_loops == TL_SETUP_MAX_VERSION_QRY &&
- hw->hw_version == HW_VERSION_2 &&
- hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) {
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": failed to startup using TX2, trying TX\n");
-
- hw->memreg_tx = &hw->memory_info_regs->memreg_tx_old;
- hw->init_loops = 0;
- }
- /* Give up after a certain number of retries */
- if (hw->init_loops == TL_SETUP_MAX_VERSION_QRY) {
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": card failed to start up!\n");
- hw->initializing = 0;
- } else {
- /* Do not attempt to write to the board if it is not present. */
- if (is_card_present(hw)) {
- unsigned long flags;
-
- spin_lock_irqsave(&hw->lock, flags);
- hw->to_setup = 1;
- hw->tx_ready = 1;
- spin_unlock_irqrestore(&hw->lock, flags);
- tasklet_schedule(&hw->tasklet);
- }
-
- mod_timer(&hw->setup_timer,
- jiffies + msecs_to_jiffies(TL_SETUP_VERSION_QRY_TMO));
- }
-}
-
-/*
- * Stop any interrupts from executing so that, once this function returns,
- * other layers of the driver can be sure they won't get any more callbacks.
- * Thus must be called on a proper process context.
- */
-void ipwireless_stop_interrupts(struct ipw_hardware *hw)
-{
- if (!hw->shutting_down) {
- /* Tell everyone we are going down. */
- hw->shutting_down = 1;
- del_timer(&hw->setup_timer);
-
- /* Prevent the hardware from sending any more interrupts */
- do_close_hardware(hw);
- }
-}
-
-void ipwireless_hardware_free(struct ipw_hardware *hw)
-{
- int i;
- struct ipw_rx_packet *rp, *rq;
- struct ipw_tx_packet *tp, *tq;
-
- ipwireless_stop_interrupts(hw);
-
- flush_work_sync(&hw->work_rx);
-
- for (i = 0; i < NL_NUM_OF_ADDRESSES; i++)
- if (hw->packet_assembler[i] != NULL)
- kfree(hw->packet_assembler[i]);
-
- for (i = 0; i < NL_NUM_OF_PRIORITIES; i++)
- list_for_each_entry_safe(tp, tq, &hw->tx_queue[i], queue) {
- list_del(&tp->queue);
- kfree(tp);
- }
-
- list_for_each_entry_safe(rp, rq, &hw->rx_queue, queue) {
- list_del(&rp->queue);
- kfree(rp);
- }
-
- list_for_each_entry_safe(rp, rq, &hw->rx_pool, queue) {
- list_del(&rp->queue);
- kfree(rp);
- }
- kfree(hw);
-}
-
-/*
- * Associate the specified network with this hardware, so it will receive events
- * from it.
- */
-void ipwireless_associate_network(struct ipw_hardware *hw,
- struct ipw_network *network)
-{
- hw->network = network;
-}