2 * IPWireless 3G PCMCIA Network Driver
5 * by Stephen Blackheath <stephen@blacksapphire.com>,
6 * Ben Martel <benm@symmetric.co.nz>
8 * Copyrighted as follows:
9 * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
11 * Various driver changes and rewrites, port to new kernels
12 * Copyright (C) 2006-2007 Jiri Kosina
14 * Misc code cleanups and updates
15 * Copyright (C) 2007 David Sterba
18 #include <linux/interrupt.h>
20 #include <linux/irq.h>
21 #include <linux/kernel.h>
22 #include <linux/list.h>
23 #include <linux/slab.h>
26 #include "setup_protocol.h"
30 static void ipw_send_setup_packet(struct ipw_hardware *hw);
31 static void handle_received_SETUP_packet(struct ipw_hardware *ipw,
33 unsigned char *data, int len,
35 static void ipwireless_setup_timer(unsigned long data);
36 static void handle_received_CTRL_packet(struct ipw_hardware *hw,
37 unsigned int channel_idx, unsigned char *data, int len);
39 /*#define TIMING_DIAGNOSTICS*/
41 #ifdef TIMING_DIAGNOSTICS
43 static struct timing_stats {
44 unsigned long last_report_time;
45 unsigned long read_time;
46 unsigned long write_time;
47 unsigned long read_bytes;
48 unsigned long write_bytes;
49 unsigned long start_time;
52 static void start_timing(void)
54 timing_stats.start_time = jiffies;
57 static void end_read_timing(unsigned length)
59 timing_stats.read_time += (jiffies - start_time);
60 timing_stats.read_bytes += length + 2;
64 static void end_write_timing(unsigned length)
66 timing_stats.write_time += (jiffies - start_time);
67 timing_stats.write_bytes += length + 2;
71 static void report_timing(void)
73 unsigned long since = jiffies - timing_stats.last_report_time;
75 /* If it's been more than one second... */
77 int first = (timing_stats.last_report_time == 0);
79 timing_stats.last_report_time = jiffies;
81 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
82 ": %u us elapsed - read %lu bytes in %u us, "
83 "wrote %lu bytes in %u us\n",
84 jiffies_to_usecs(since),
85 timing_stats.read_bytes,
86 jiffies_to_usecs(timing_stats.read_time),
87 timing_stats.write_bytes,
88 jiffies_to_usecs(timing_stats.write_time));
90 timing_stats.read_time = 0;
91 timing_stats.write_time = 0;
92 timing_stats.read_bytes = 0;
93 timing_stats.write_bytes = 0;
97 static void start_timing(void) { }
98 static void end_read_timing(unsigned length) { }
99 static void end_write_timing(unsigned length) { }
102 /* Imported IPW definitions */
104 #define LL_MTU_V1 318
105 #define LL_MTU_V2 250
106 #define LL_MTU_MAX (LL_MTU_V1 > LL_MTU_V2 ? LL_MTU_V1 : LL_MTU_V2)
113 #define ADDR_SETUP_PROT 0
117 /* Identifier for the Com Data protocol */
118 TL_PROTOCOLID_COM_DATA = 0,
120 /* Identifier for the Com Control protocol */
121 TL_PROTOCOLID_COM_CTRL = 1,
123 /* Identifier for the Setup protocol */
124 TL_PROTOCOLID_SETUP = 2
127 /* Number of bytes in NL packet header (cannot do
128 * sizeof(nl_packet_header) since it's a bitfield) */
129 #define NL_FIRST_PACKET_HEADER_SIZE 3
131 /* Number of bytes in NL packet header (cannot do
132 * sizeof(nl_packet_header) since it's a bitfield) */
133 #define NL_FOLLOWING_PACKET_HEADER_SIZE 1
135 struct nl_first_packet_header {
136 #if defined(__BIG_ENDIAN_BITFIELD)
137 unsigned char packet_rank:2;
138 unsigned char address:3;
139 unsigned char protocol:3;
141 unsigned char protocol:3;
142 unsigned char address:3;
143 unsigned char packet_rank:2;
145 unsigned char length_lsb;
146 unsigned char length_msb;
149 struct nl_packet_header {
150 #if defined(__BIG_ENDIAN_BITFIELD)
151 unsigned char packet_rank:2;
152 unsigned char address:3;
153 unsigned char protocol:3;
155 unsigned char protocol:3;
156 unsigned char address:3;
157 unsigned char packet_rank:2;
161 /* Value of 'packet_rank' above */
162 #define NL_INTERMEDIATE_PACKET 0x0
163 #define NL_LAST_PACKET 0x1
164 #define NL_FIRST_PACKET 0x2
167 /* Network packet header of the first packet (a special case) */
168 struct nl_first_packet_header hdr_first;
169 /* Network packet header of the following packets (if any) */
170 struct nl_packet_header hdr;
171 /* Complete network packet (header + data) */
172 unsigned char rawpkt[LL_MTU_MAX];
173 } __attribute__ ((__packed__));
175 #define HW_VERSION_UNKNOWN -1
176 #define HW_VERSION_1 1
177 #define HW_VERSION_2 2
180 #define IOIER 0x00 /* Interrupt Enable Register */
181 #define IOIR 0x02 /* Interrupt Source/ACK register */
182 #define IODCR 0x04 /* Data Control Register */
183 #define IODRR 0x06 /* Data Read Register */
184 #define IODWR 0x08 /* Data Write Register */
185 #define IOESR 0x0A /* Embedded Driver Status Register */
186 #define IORXR 0x0C /* Rx Fifo Register (Host to Embedded) */
187 #define IOTXR 0x0E /* Tx Fifo Register (Embedded to Host) */
189 /* I/O ports and bit definitions for version 1 of the hardware */
192 #define IER_RXENABLED 0x1
193 #define IER_TXENABLED 0x2
196 #define IR_RXINTR 0x1
197 #define IR_TXINTR 0x2
200 #define DCR_RXDONE 0x1
201 #define DCR_TXDONE 0x2
202 #define DCR_RXRESET 0x4
203 #define DCR_TXRESET 0x8
205 /* I/O ports and bit definitions for version 2 of the hardware */
208 unsigned short reg_config_option; /* PCCOR: Configuration Option Register */
209 unsigned short reg_config_and_status; /* PCCSR: Configuration and Status Register */
210 unsigned short reg_pin_replacement; /* PCPRR: Pin Replacemant Register */
211 unsigned short reg_socket_and_copy; /* PCSCR: Socket and Copy Register */
212 unsigned short reg_ext_status; /* PCESR: Extendend Status Register */
213 unsigned short reg_io_base; /* PCIOB: I/O Base Register */
217 unsigned short memreg_tx_old; /* TX Register (R/W) */
219 unsigned short memreg_rx_done; /* RXDone Register (R/W) */
221 unsigned short memreg_rx; /* RX Register (R/W) */
223 unsigned short memreg_pc_interrupt_ack; /* PC intr Ack Register (W) */
225 unsigned long memreg_card_present;/* Mask for Host to check (R) for
226 * CARD_PRESENT_VALUE */
227 unsigned short memreg_tx_new; /* TX2 (new) Register (R/W) */
230 #define CARD_PRESENT_VALUE (0xBEEFCAFEUL)
232 #define MEMTX_TX 0x0001
233 #define MEMRX_RX 0x0001
234 #define MEMRX_RX_DONE 0x0001
235 #define MEMRX_PCINTACKK 0x0001
237 #define NL_NUM_OF_PRIORITIES 3
238 #define NL_NUM_OF_PROTOCOLS 3
239 #define NL_NUM_OF_ADDRESSES NO_OF_IPW_CHANNELS
241 struct ipw_hardware {
242 unsigned int base_port;
244 unsigned short ll_mtu;
249 struct timer_list setup_timer;
251 /* Flag if hw is ready to send next packet */
253 /* Count of pending packets to be sent */
255 struct list_head tx_queue[NL_NUM_OF_PRIORITIES];
258 struct list_head rx_queue;
259 /* Pool of rx_packet structures that are not currently used. */
260 struct list_head rx_pool;
262 /* True if reception of data is blocked while userspace processes it. */
264 /* True if there is RX data ready on the hardware. */
266 unsigned short last_memtx_serial;
268 * Newer versions of the V2 card firmware send serial numbers in the
269 * MemTX register. 'serial_number_detected' is set true when we detect
270 * a non-zero serial number (indicating the new firmware). Thereafter,
271 * the driver can safely ignore the Timer Recovery re-sends to avoid
272 * out-of-sync problems.
274 int serial_number_detected;
275 struct work_struct work_rx;
277 /* True if we are to send the set-up data to the hardware. */
280 /* Card has been removed */
282 /* Saved irq value when we disable the interrupt. */
284 /* True if this driver is shutting down. */
286 /* Modem control lines */
287 unsigned int control_lines[NL_NUM_OF_ADDRESSES];
288 struct ipw_rx_packet *packet_assembler[NL_NUM_OF_ADDRESSES];
290 struct tasklet_struct tasklet;
292 /* The handle for the network layer, for the sending of events to it. */
293 struct ipw_network *network;
294 struct MEMINFREG __iomem *memory_info_regs;
295 struct MEMCCR __iomem *memregs_CCR;
296 void (*reboot_callback) (void *data);
297 void *reboot_callback_data;
299 unsigned short __iomem *memreg_tx;
303 * Packet info structure for tx packets.
304 * Note: not all the fields defined here are required for all protocols
306 struct ipw_tx_packet {
307 struct list_head queue;
308 /* channel idx + 1 */
309 unsigned char dest_addr;
310 /* SETUP, CTRL or DATA */
311 unsigned char protocol;
312 /* Length of data block, which starts at the end of this structure */
313 unsigned short length;
315 /* Offset of where we've sent up to so far */
316 unsigned long offset;
317 /* Count of packet fragments, starting at 0 */
320 /* Called after packet is sent and before is freed */
321 void (*packet_callback) (void *cb_data, unsigned int packet_length);
325 /* Signals from DTE */
326 #define COMCTRL_RTS 0
327 #define COMCTRL_DTR 1
329 /* Signals from DCE */
330 #define COMCTRL_CTS 2
331 #define COMCTRL_DCD 3
332 #define COMCTRL_DSR 4
335 struct ipw_control_packet_body {
336 /* DTE signal or DCE signal */
337 unsigned char sig_no;
338 /* 0: set signal, 1: clear signal */
340 } __attribute__ ((__packed__));
342 struct ipw_control_packet {
343 struct ipw_tx_packet header;
344 struct ipw_control_packet_body body;
347 struct ipw_rx_packet {
348 struct list_head queue;
349 unsigned int capacity;
351 unsigned int protocol;
352 unsigned int channel_idx;
355 static char *data_type(const unsigned char *buf, unsigned length)
357 struct nl_packet_header *hdr = (struct nl_packet_header *) buf;
362 if (hdr->packet_rank & NL_FIRST_PACKET) {
363 switch (hdr->protocol) {
364 case TL_PROTOCOLID_COM_DATA: return "DATA ";
365 case TL_PROTOCOLID_COM_CTRL: return "CTRL ";
366 case TL_PROTOCOLID_SETUP: return "SETUP";
367 default: return "???? ";
373 #define DUMP_MAX_BYTES 64
375 static void dump_data_bytes(const char *type, const unsigned char *data,
380 sprintf(prefix, IPWIRELESS_PCCARD_NAME ": %s %s ",
381 type, data_type(data, length));
382 print_hex_dump_bytes(prefix, 0, (void *)data,
383 length < DUMP_MAX_BYTES ? length : DUMP_MAX_BYTES);
386 static int do_send_fragment(struct ipw_hardware *hw, const unsigned char *data,
397 if (length > hw->ll_mtu)
400 if (ipwireless_debug)
401 dump_data_bytes("send", data, length);
403 spin_lock_irqsave(&hw->lock, flags);
407 if (hw->hw_version == HW_VERSION_1) {
408 outw((unsigned short) length, hw->base_port + IODWR);
410 for (i = 0; i < length; i += 2) {
411 unsigned short d = data[i];
415 d |= data[i + 1] << 8;
416 raw_data = cpu_to_le16(d);
417 outw(raw_data, hw->base_port + IODWR);
420 outw(DCR_TXDONE, hw->base_port + IODCR);
421 } else if (hw->hw_version == HW_VERSION_2) {
422 outw((unsigned short) length, hw->base_port);
424 for (i = 0; i < length; i += 2) {
425 unsigned short d = data[i];
429 d |= data[i + 1] << 8;
430 raw_data = cpu_to_le16(d);
431 outw(raw_data, hw->base_port);
433 while ((i & 3) != 2) {
434 outw((unsigned short) 0xDEAD, hw->base_port);
437 writew(MEMRX_RX, &hw->memory_info_regs->memreg_rx);
440 spin_unlock_irqrestore(&hw->lock, flags);
442 end_write_timing(length);
447 static int do_send_packet(struct ipw_hardware *hw, struct ipw_tx_packet *packet)
449 unsigned short fragment_data_len;
450 unsigned short data_left = packet->length - packet->offset;
451 unsigned short header_size;
455 (packet->fragment_count == 0)
456 ? NL_FIRST_PACKET_HEADER_SIZE
457 : NL_FOLLOWING_PACKET_HEADER_SIZE;
458 fragment_data_len = hw->ll_mtu - header_size;
459 if (data_left < fragment_data_len)
460 fragment_data_len = data_left;
462 pkt.hdr_first.protocol = packet->protocol;
463 pkt.hdr_first.address = packet->dest_addr;
464 pkt.hdr_first.packet_rank = 0;
467 if (packet->fragment_count == 0) {
468 pkt.hdr_first.packet_rank |= NL_FIRST_PACKET;
469 pkt.hdr_first.length_lsb = (unsigned char) packet->length;
470 pkt.hdr_first.length_msb =
471 (unsigned char) (packet->length >> 8);
474 memcpy(pkt.rawpkt + header_size,
475 ((unsigned char *) packet) + sizeof(struct ipw_tx_packet) +
476 packet->offset, fragment_data_len);
477 packet->offset += fragment_data_len;
478 packet->fragment_count++;
480 /* Last packet? (May also be first packet.) */
481 if (packet->offset == packet->length)
482 pkt.hdr_first.packet_rank |= NL_LAST_PACKET;
483 do_send_fragment(hw, pkt.rawpkt, header_size + fragment_data_len);
485 /* If this packet has unsent data, then re-queue it. */
486 if (packet->offset < packet->length) {
488 * Re-queue it at the head of the highest priority queue so
489 * it goes before all other packets
493 spin_lock_irqsave(&hw->lock, flags);
494 list_add(&packet->queue, &hw->tx_queue[0]);
496 spin_unlock_irqrestore(&hw->lock, flags);
498 if (packet->packet_callback)
499 packet->packet_callback(packet->callback_data,
507 static void ipw_setup_hardware(struct ipw_hardware *hw)
511 spin_lock_irqsave(&hw->lock, flags);
512 if (hw->hw_version == HW_VERSION_1) {
514 outw(DCR_RXRESET, hw->base_port + IODCR);
515 /* SB: Reset TX FIFO */
516 outw(DCR_TXRESET, hw->base_port + IODCR);
518 /* Enable TX and RX interrupts. */
519 outw(IER_TXENABLED | IER_RXENABLED, hw->base_port + IOIER);
522 * Set INTRACK bit (bit 0), which means we must explicitly
523 * acknowledge interrupts by clearing bit 2 of reg_config_and_status.
525 unsigned short csr = readw(&hw->memregs_CCR->reg_config_and_status);
528 writew(csr, &hw->memregs_CCR->reg_config_and_status);
530 spin_unlock_irqrestore(&hw->lock, flags);
534 * If 'packet' is NULL, then this function allocates a new packet, setting its
535 * length to 0 and ensuring it has the specified minimum amount of free space.
537 * If 'packet' is not NULL, then this function enlarges it if it doesn't
538 * have the specified minimum amount of free space.
541 static struct ipw_rx_packet *pool_allocate(struct ipw_hardware *hw,
542 struct ipw_rx_packet *packet,
543 int minimum_free_space)
549 spin_lock_irqsave(&hw->lock, flags);
550 if (!list_empty(&hw->rx_pool)) {
551 packet = list_first_entry(&hw->rx_pool,
552 struct ipw_rx_packet, queue);
553 list_del(&packet->queue);
555 spin_unlock_irqrestore(&hw->lock, flags);
557 static int min_capacity = 256;
560 spin_unlock_irqrestore(&hw->lock, flags);
562 (minimum_free_space > min_capacity
565 packet = kmalloc(sizeof(struct ipw_rx_packet)
566 + new_capacity, GFP_ATOMIC);
569 packet->capacity = new_capacity;
574 if (packet->length + minimum_free_space > packet->capacity) {
575 struct ipw_rx_packet *old_packet = packet;
577 packet = kmalloc(sizeof(struct ipw_rx_packet) +
578 old_packet->length + minimum_free_space,
584 memcpy(packet, old_packet,
585 sizeof(struct ipw_rx_packet)
586 + old_packet->length);
587 packet->capacity = old_packet->length + minimum_free_space;
594 static void pool_free(struct ipw_hardware *hw, struct ipw_rx_packet *packet)
596 if (hw->rx_pool_size > 6)
600 list_add_tail(&packet->queue, &hw->rx_pool);
604 static void queue_received_packet(struct ipw_hardware *hw,
605 unsigned int protocol, unsigned int address,
606 unsigned char *data, int length, int is_last)
608 unsigned int channel_idx = address - 1;
609 struct ipw_rx_packet *packet = NULL;
612 /* Discard packet if channel index is out of range. */
613 if (channel_idx >= NL_NUM_OF_ADDRESSES) {
614 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
615 ": data packet has bad address %u\n", address);
620 * ->packet_assembler is safe to touch unlocked, this is the only place
622 if (protocol == TL_PROTOCOLID_COM_DATA) {
623 struct ipw_rx_packet **assem =
624 &hw->packet_assembler[channel_idx];
627 * Create a new packet, or assembler already contains one
628 * enlarge it by 'length' bytes.
630 (*assem) = pool_allocate(hw, *assem, length);
632 printk(KERN_ERR IPWIRELESS_PCCARD_NAME
633 ": no memory for incomming data packet, dropped!\n");
636 (*assem)->protocol = protocol;
637 (*assem)->channel_idx = channel_idx;
639 /* Append this packet data onto existing data. */
640 memcpy((unsigned char *)(*assem) +
641 sizeof(struct ipw_rx_packet)
642 + (*assem)->length, data, length);
643 (*assem)->length += length;
647 /* Count queued DATA bytes only */
648 spin_lock_irqsave(&hw->lock, flags);
649 hw->rx_bytes_queued += packet->length;
650 spin_unlock_irqrestore(&hw->lock, flags);
653 /* If it's a CTRL packet, don't assemble, just queue it. */
654 packet = pool_allocate(hw, NULL, length);
656 printk(KERN_ERR IPWIRELESS_PCCARD_NAME
657 ": no memory for incomming ctrl packet, dropped!\n");
660 packet->protocol = protocol;
661 packet->channel_idx = channel_idx;
662 memcpy((unsigned char *)packet + sizeof(struct ipw_rx_packet),
664 packet->length = length;
668 * If this is the last packet, then send the assembled packet on to the
672 spin_lock_irqsave(&hw->lock, flags);
673 list_add_tail(&packet->queue, &hw->rx_queue);
674 /* Block reception of incoming packets if queue is full. */
676 (hw->rx_bytes_queued >= IPWIRELESS_RX_QUEUE_SIZE);
678 spin_unlock_irqrestore(&hw->lock, flags);
679 schedule_work(&hw->work_rx);
686 static void ipw_receive_data_work(struct work_struct *work_rx)
688 struct ipw_hardware *hw =
689 container_of(work_rx, struct ipw_hardware, work_rx);
692 spin_lock_irqsave(&hw->lock, flags);
693 while (!list_empty(&hw->rx_queue)) {
694 struct ipw_rx_packet *packet =
695 list_first_entry(&hw->rx_queue,
696 struct ipw_rx_packet, queue);
698 if (hw->shutting_down)
700 list_del(&packet->queue);
703 * Note: ipwireless_network_packet_received must be called in a
704 * process context (i.e. via schedule_work) because the tty
705 * output code can sleep in the tty_flip_buffer_push call.
707 if (packet->protocol == TL_PROTOCOLID_COM_DATA) {
708 if (hw->network != NULL) {
709 /* If the network hasn't been disconnected. */
710 spin_unlock_irqrestore(&hw->lock, flags);
712 * This must run unlocked due to tty processing
715 ipwireless_network_packet_received(
718 (unsigned char *)packet
719 + sizeof(struct ipw_rx_packet),
721 spin_lock_irqsave(&hw->lock, flags);
723 /* Count queued DATA bytes only */
724 hw->rx_bytes_queued -= packet->length;
727 * This is safe to be called locked, callchain does
730 handle_received_CTRL_packet(hw, packet->channel_idx,
731 (unsigned char *)packet
732 + sizeof(struct ipw_rx_packet),
735 pool_free(hw, packet);
737 * Unblock reception of incoming packets if queue is no longer
741 hw->rx_bytes_queued >= IPWIRELESS_RX_QUEUE_SIZE;
742 if (hw->shutting_down)
745 spin_unlock_irqrestore(&hw->lock, flags);
748 static void handle_received_CTRL_packet(struct ipw_hardware *hw,
749 unsigned int channel_idx,
750 unsigned char *data, int len)
752 struct ipw_control_packet_body *body =
753 (struct ipw_control_packet_body *) data;
754 unsigned int changed_mask;
756 if (len != sizeof(struct ipw_control_packet_body)) {
757 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
758 ": control packet was %d bytes - wrong size!\n",
763 switch (body->sig_no) {
765 changed_mask = IPW_CONTROL_LINE_CTS;
768 changed_mask = IPW_CONTROL_LINE_DCD;
771 changed_mask = IPW_CONTROL_LINE_DSR;
774 changed_mask = IPW_CONTROL_LINE_RI;
780 if (changed_mask != 0) {
782 hw->control_lines[channel_idx] |= changed_mask;
784 hw->control_lines[channel_idx] &= ~changed_mask;
786 ipwireless_network_notify_control_line_change(
789 hw->control_lines[channel_idx],
794 static void handle_received_packet(struct ipw_hardware *hw,
795 union nl_packet *packet,
798 unsigned int protocol = packet->hdr.protocol;
799 unsigned int address = packet->hdr.address;
800 unsigned int header_length;
802 unsigned int data_len;
803 int is_last = packet->hdr.packet_rank & NL_LAST_PACKET;
805 if (packet->hdr.packet_rank & NL_FIRST_PACKET)
806 header_length = NL_FIRST_PACKET_HEADER_SIZE;
808 header_length = NL_FOLLOWING_PACKET_HEADER_SIZE;
810 data = packet->rawpkt + header_length;
811 data_len = len - header_length;
813 case TL_PROTOCOLID_COM_DATA:
814 case TL_PROTOCOLID_COM_CTRL:
815 queue_received_packet(hw, protocol, address, data, data_len,
818 case TL_PROTOCOLID_SETUP:
819 handle_received_SETUP_packet(hw, address, data, data_len,
825 static void acknowledge_data_read(struct ipw_hardware *hw)
827 if (hw->hw_version == HW_VERSION_1)
828 outw(DCR_RXDONE, hw->base_port + IODCR);
830 writew(MEMRX_PCINTACKK,
831 &hw->memory_info_regs->memreg_pc_interrupt_ack);
835 * Retrieve a packet from the IPW hardware.
837 static void do_receive_packet(struct ipw_hardware *hw)
841 unsigned char pkt[LL_MTU_MAX];
845 if (hw->hw_version == HW_VERSION_1) {
846 len = inw(hw->base_port + IODRR);
847 if (len > hw->ll_mtu) {
848 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
849 ": received a packet of %u bytes - "
850 "longer than the MTU!\n", len);
851 outw(DCR_RXDONE | DCR_RXRESET, hw->base_port + IODCR);
855 for (i = 0; i < len; i += 2) {
856 __le16 raw_data = inw(hw->base_port + IODRR);
857 unsigned short data = le16_to_cpu(raw_data);
859 pkt[i] = (unsigned char) data;
860 pkt[i + 1] = (unsigned char) (data >> 8);
863 len = inw(hw->base_port);
864 if (len > hw->ll_mtu) {
865 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
866 ": received a packet of %u bytes - "
867 "longer than the MTU!\n", len);
868 writew(MEMRX_PCINTACKK,
869 &hw->memory_info_regs->memreg_pc_interrupt_ack);
873 for (i = 0; i < len; i += 2) {
874 __le16 raw_data = inw(hw->base_port);
875 unsigned short data = le16_to_cpu(raw_data);
877 pkt[i] = (unsigned char) data;
878 pkt[i + 1] = (unsigned char) (data >> 8);
881 while ((i & 3) != 2) {
887 acknowledge_data_read(hw);
889 if (ipwireless_debug)
890 dump_data_bytes("recv", pkt, len);
892 handle_received_packet(hw, (union nl_packet *) pkt, len);
894 end_read_timing(len);
897 static int get_current_packet_priority(struct ipw_hardware *hw)
900 * If we're initializing, don't send anything of higher priority than
901 * PRIO_SETUP. The network layer therefore need not care about
902 * hardware initialization - any of its stuff will simply be queued
903 * until setup is complete.
905 return (hw->to_setup || hw->initializing
906 ? PRIO_SETUP + 1 : NL_NUM_OF_PRIORITIES);
910 * return 1 if something has been received from hw
912 static int get_packets_from_hw(struct ipw_hardware *hw)
917 spin_lock_irqsave(&hw->lock, flags);
918 while (hw->rx_ready && !hw->blocking_rx) {
921 spin_unlock_irqrestore(&hw->lock, flags);
923 do_receive_packet(hw);
925 spin_lock_irqsave(&hw->lock, flags);
927 spin_unlock_irqrestore(&hw->lock, flags);
933 * Send pending packet up to given priority, prioritize SETUP data until
934 * hardware is fully setup.
936 * return 1 if more packets can be sent
938 static int send_pending_packet(struct ipw_hardware *hw, int priority_limit)
940 int more_to_send = 0;
943 spin_lock_irqsave(&hw->lock, flags);
944 if (hw->tx_queued && hw->tx_ready) {
946 struct ipw_tx_packet *packet = NULL;
949 for (priority = 0; priority < priority_limit; priority++) {
950 if (!list_empty(&hw->tx_queue[priority])) {
951 packet = list_first_entry(
952 &hw->tx_queue[priority],
953 struct ipw_tx_packet,
957 list_del(&packet->queue);
964 spin_unlock_irqrestore(&hw->lock, flags);
968 spin_unlock_irqrestore(&hw->lock, flags);
971 do_send_packet(hw, packet);
973 /* Check if more to send */
974 spin_lock_irqsave(&hw->lock, flags);
975 for (priority = 0; priority < priority_limit; priority++)
976 if (!list_empty(&hw->tx_queue[priority])) {
984 spin_unlock_irqrestore(&hw->lock, flags);
990 * Send and receive all queued packets.
992 static void ipwireless_do_tasklet(unsigned long hw_)
994 struct ipw_hardware *hw = (struct ipw_hardware *) hw_;
997 spin_lock_irqsave(&hw->lock, flags);
998 if (hw->shutting_down) {
999 spin_unlock_irqrestore(&hw->lock, flags);
1003 if (hw->to_setup == 1) {
1005 * Initial setup data sent to hardware
1008 spin_unlock_irqrestore(&hw->lock, flags);
1010 ipw_setup_hardware(hw);
1011 ipw_send_setup_packet(hw);
1013 send_pending_packet(hw, PRIO_SETUP + 1);
1014 get_packets_from_hw(hw);
1016 int priority_limit = get_current_packet_priority(hw);
1019 spin_unlock_irqrestore(&hw->lock, flags);
1022 again = send_pending_packet(hw, priority_limit);
1023 again |= get_packets_from_hw(hw);
1029 * return true if the card is physically present.
1031 static int is_card_present(struct ipw_hardware *hw)
1033 if (hw->hw_version == HW_VERSION_1)
1034 return inw(hw->base_port + IOIR) != 0xFFFF;
1036 return readl(&hw->memory_info_regs->memreg_card_present) ==
1040 static irqreturn_t ipwireless_handle_v1_interrupt(int irq,
1041 struct ipw_hardware *hw)
1043 unsigned short irqn;
1045 irqn = inw(hw->base_port + IOIR);
1047 /* Check if card is present */
1050 else if (irqn != 0) {
1051 unsigned short ack = 0;
1052 unsigned long flags;
1054 /* Transmit complete. */
1055 if (irqn & IR_TXINTR) {
1057 spin_lock_irqsave(&hw->lock, flags);
1059 spin_unlock_irqrestore(&hw->lock, flags);
1062 if (irqn & IR_RXINTR) {
1064 spin_lock_irqsave(&hw->lock, flags);
1066 spin_unlock_irqrestore(&hw->lock, flags);
1069 outw(ack, hw->base_port + IOIR);
1070 tasklet_schedule(&hw->tasklet);
1077 static void acknowledge_pcmcia_interrupt(struct ipw_hardware *hw)
1079 unsigned short csr = readw(&hw->memregs_CCR->reg_config_and_status);
1082 writew(csr, &hw->memregs_CCR->reg_config_and_status);
1085 static irqreturn_t ipwireless_handle_v2_v3_interrupt(int irq,
1086 struct ipw_hardware *hw)
1092 unsigned long flags;
1096 unsigned short memtx = readw(hw->memreg_tx);
1097 unsigned short memtx_serial;
1098 unsigned short memrxdone =
1099 readw(&hw->memory_info_regs->memreg_rx_done);
1103 /* check whether the interrupt was generated by ipwireless card */
1104 if (!(memtx & MEMTX_TX) && !(memrxdone & MEMRX_RX_DONE)) {
1106 /* check if the card uses memreg_tx_old register */
1107 if (hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) {
1108 memtx = readw(&hw->memory_info_regs->memreg_tx_old);
1109 if (memtx & MEMTX_TX) {
1110 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
1111 ": Using memreg_tx_old\n");
1113 &hw->memory_info_regs->memreg_tx_old;
1122 * See if the card is physically present. Note that while it is
1123 * powering up, it appears not to be present.
1125 if (!is_card_present(hw)) {
1126 acknowledge_pcmcia_interrupt(hw);
1130 memtx_serial = memtx & (unsigned short) 0xff00;
1131 if (memtx & MEMTX_TX) {
1132 writew(memtx_serial, hw->memreg_tx);
1134 if (hw->serial_number_detected) {
1135 if (memtx_serial != hw->last_memtx_serial) {
1136 hw->last_memtx_serial = memtx_serial;
1137 spin_lock_irqsave(&hw->lock, flags);
1139 spin_unlock_irqrestore(&hw->lock, flags);
1142 /* Ignore 'Timer Recovery' duplicates. */
1146 * If a non-zero serial number is seen, then enable
1147 * serial number checking.
1149 if (memtx_serial != 0) {
1150 hw->serial_number_detected = 1;
1151 printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
1152 ": memreg_tx serial num detected\n");
1154 spin_lock_irqsave(&hw->lock, flags);
1156 spin_unlock_irqrestore(&hw->lock, flags);
1161 if (memrxdone & MEMRX_RX_DONE) {
1162 writew(0, &hw->memory_info_regs->memreg_rx_done);
1163 spin_lock_irqsave(&hw->lock, flags);
1165 spin_unlock_irqrestore(&hw->lock, flags);
1169 writew(MEMRX_PCINTACKK,
1170 &hw->memory_info_regs->memreg_pc_interrupt_ack);
1172 acknowledge_pcmcia_interrupt(hw);
1175 tasklet_schedule(&hw->tasklet);
1176 else if (!rx_repeat) {
1177 if (hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) {
1178 if (hw->serial_number_detected)
1179 printk(KERN_WARNING IPWIRELESS_PCCARD_NAME
1180 ": spurious interrupt - new_tx mode\n");
1182 printk(KERN_WARNING IPWIRELESS_PCCARD_NAME
1183 ": no valid memreg_tx value - "
1184 "switching to the old memreg_tx\n");
1186 &hw->memory_info_regs->memreg_tx_old;
1190 printk(KERN_WARNING IPWIRELESS_PCCARD_NAME
1191 ": spurious interrupt - old_tx mode\n");
1194 } while (try_mem_tx_old == 1);
1199 irqreturn_t ipwireless_interrupt(int irq, void *dev_id)
1201 struct ipw_hardware *hw = dev_id;
1203 if (hw->hw_version == HW_VERSION_1)
1204 return ipwireless_handle_v1_interrupt(irq, hw);
1206 return ipwireless_handle_v2_v3_interrupt(irq, hw);
1209 static void flush_packets_to_hw(struct ipw_hardware *hw)
1212 unsigned long flags;
1214 spin_lock_irqsave(&hw->lock, flags);
1215 priority_limit = get_current_packet_priority(hw);
1216 spin_unlock_irqrestore(&hw->lock, flags);
1218 while (send_pending_packet(hw, priority_limit));
1221 static void send_packet(struct ipw_hardware *hw, int priority,
1222 struct ipw_tx_packet *packet)
1224 unsigned long flags;
1226 spin_lock_irqsave(&hw->lock, flags);
1227 list_add_tail(&packet->queue, &hw->tx_queue[priority]);
1229 spin_unlock_irqrestore(&hw->lock, flags);
1231 flush_packets_to_hw(hw);
1234 /* Create data packet, non-atomic allocation */
1235 static void *alloc_data_packet(int data_size,
1236 unsigned char dest_addr,
1237 unsigned char protocol)
1239 struct ipw_tx_packet *packet = kzalloc(
1240 sizeof(struct ipw_tx_packet) + data_size,
1246 INIT_LIST_HEAD(&packet->queue);
1247 packet->dest_addr = dest_addr;
1248 packet->protocol = protocol;
1249 packet->length = data_size;
1254 static void *alloc_ctrl_packet(int header_size,
1255 unsigned char dest_addr,
1256 unsigned char protocol,
1257 unsigned char sig_no)
1260 * sig_no is located right after ipw_tx_packet struct in every
1261 * CTRL or SETUP packets, we can use ipw_control_packet as a
1264 struct ipw_control_packet *packet = kzalloc(header_size, GFP_ATOMIC);
1269 INIT_LIST_HEAD(&packet->header.queue);
1270 packet->header.dest_addr = dest_addr;
1271 packet->header.protocol = protocol;
1272 packet->header.length = header_size - sizeof(struct ipw_tx_packet);
1273 packet->body.sig_no = sig_no;
1278 int ipwireless_send_packet(struct ipw_hardware *hw, unsigned int channel_idx,
1279 unsigned char *data, unsigned int length,
1280 void (*callback) (void *cb, unsigned int length),
1281 void *callback_data)
1283 struct ipw_tx_packet *packet;
1285 packet = alloc_data_packet(length, (channel_idx + 1),
1286 TL_PROTOCOLID_COM_DATA);
1289 packet->packet_callback = callback;
1290 packet->callback_data = callback_data;
1291 memcpy((unsigned char *) packet + sizeof(struct ipw_tx_packet), data,
1294 send_packet(hw, PRIO_DATA, packet);
1298 static int set_control_line(struct ipw_hardware *hw, int prio,
1299 unsigned int channel_idx, int line, int state)
1301 struct ipw_control_packet *packet;
1302 int protocolid = TL_PROTOCOLID_COM_CTRL;
1304 if (prio == PRIO_SETUP)
1305 protocolid = TL_PROTOCOLID_SETUP;
1307 packet = alloc_ctrl_packet(sizeof(struct ipw_control_packet),
1308 (channel_idx + 1), protocolid, line);
1311 packet->header.length = sizeof(struct ipw_control_packet_body);
1312 packet->body.value = (state == 0 ? 0 : 1);
1313 send_packet(hw, prio, &packet->header);
1318 static int set_DTR(struct ipw_hardware *hw, int priority,
1319 unsigned int channel_idx, int state)
1322 hw->control_lines[channel_idx] |= IPW_CONTROL_LINE_DTR;
1324 hw->control_lines[channel_idx] &= ~IPW_CONTROL_LINE_DTR;
1326 return set_control_line(hw, priority, channel_idx, COMCTRL_DTR, state);
1329 static int set_RTS(struct ipw_hardware *hw, int priority,
1330 unsigned int channel_idx, int state)
1333 hw->control_lines[channel_idx] |= IPW_CONTROL_LINE_RTS;
1335 hw->control_lines[channel_idx] &= ~IPW_CONTROL_LINE_RTS;
1337 return set_control_line(hw, priority, channel_idx, COMCTRL_RTS, state);
1340 int ipwireless_set_DTR(struct ipw_hardware *hw, unsigned int channel_idx,
1343 return set_DTR(hw, PRIO_CTRL, channel_idx, state);
1346 int ipwireless_set_RTS(struct ipw_hardware *hw, unsigned int channel_idx,
1349 return set_RTS(hw, PRIO_CTRL, channel_idx, state);
1352 struct ipw_setup_get_version_query_packet {
1353 struct ipw_tx_packet header;
1354 struct tl_setup_get_version_qry body;
1357 struct ipw_setup_config_packet {
1358 struct ipw_tx_packet header;
1359 struct tl_setup_config_msg body;
1362 struct ipw_setup_config_done_packet {
1363 struct ipw_tx_packet header;
1364 struct tl_setup_config_done_msg body;
1367 struct ipw_setup_open_packet {
1368 struct ipw_tx_packet header;
1369 struct tl_setup_open_msg body;
1372 struct ipw_setup_info_packet {
1373 struct ipw_tx_packet header;
1374 struct tl_setup_info_msg body;
1377 struct ipw_setup_reboot_msg_ack {
1378 struct ipw_tx_packet header;
1379 struct TlSetupRebootMsgAck body;
1382 /* This handles the actual initialization of the card */
1383 static void __handle_setup_get_version_rsp(struct ipw_hardware *hw)
1385 struct ipw_setup_config_packet *config_packet;
1386 struct ipw_setup_config_done_packet *config_done_packet;
1387 struct ipw_setup_open_packet *open_packet;
1388 struct ipw_setup_info_packet *info_packet;
1390 unsigned int channel_idx;
1392 /* generate config packet */
1393 for (port = 1; port <= NL_NUM_OF_ADDRESSES; port++) {
1394 config_packet = alloc_ctrl_packet(
1395 sizeof(struct ipw_setup_config_packet),
1397 TL_PROTOCOLID_SETUP,
1398 TL_SETUP_SIGNO_CONFIG_MSG);
1401 config_packet->header.length = sizeof(struct tl_setup_config_msg);
1402 config_packet->body.port_no = port;
1403 config_packet->body.prio_data = PRIO_DATA;
1404 config_packet->body.prio_ctrl = PRIO_CTRL;
1405 send_packet(hw, PRIO_SETUP, &config_packet->header);
1407 config_done_packet = alloc_ctrl_packet(
1408 sizeof(struct ipw_setup_config_done_packet),
1410 TL_PROTOCOLID_SETUP,
1411 TL_SETUP_SIGNO_CONFIG_DONE_MSG);
1412 if (!config_done_packet)
1414 config_done_packet->header.length = sizeof(struct tl_setup_config_done_msg);
1415 send_packet(hw, PRIO_SETUP, &config_done_packet->header);
1417 /* generate open packet */
1418 for (port = 1; port <= NL_NUM_OF_ADDRESSES; port++) {
1419 open_packet = alloc_ctrl_packet(
1420 sizeof(struct ipw_setup_open_packet),
1422 TL_PROTOCOLID_SETUP,
1423 TL_SETUP_SIGNO_OPEN_MSG);
1426 open_packet->header.length = sizeof(struct tl_setup_open_msg);
1427 open_packet->body.port_no = port;
1428 send_packet(hw, PRIO_SETUP, &open_packet->header);
1430 for (channel_idx = 0;
1431 channel_idx < NL_NUM_OF_ADDRESSES; channel_idx++) {
1434 ret = set_DTR(hw, PRIO_SETUP, channel_idx,
1435 (hw->control_lines[channel_idx] &
1436 IPW_CONTROL_LINE_DTR) != 0);
1438 printk(KERN_ERR IPWIRELESS_PCCARD_NAME
1439 ": error setting DTR (%d)\n", ret);
1443 set_RTS(hw, PRIO_SETUP, channel_idx,
1444 (hw->control_lines [channel_idx] &
1445 IPW_CONTROL_LINE_RTS) != 0);
1447 printk(KERN_ERR IPWIRELESS_PCCARD_NAME
1448 ": error setting RTS (%d)\n", ret);
1453 * For NDIS we assume that we are using sync PPP frames, for COM async.
1454 * This driver uses NDIS mode too. We don't bother with translation
1455 * from async -> sync PPP.
1457 info_packet = alloc_ctrl_packet(sizeof(struct ipw_setup_info_packet),
1459 TL_PROTOCOLID_SETUP,
1460 TL_SETUP_SIGNO_INFO_MSG);
1463 info_packet->header.length = sizeof(struct tl_setup_info_msg);
1464 info_packet->body.driver_type = NDISWAN_DRIVER;
1465 info_packet->body.major_version = NDISWAN_DRIVER_MAJOR_VERSION;
1466 info_packet->body.minor_version = NDISWAN_DRIVER_MINOR_VERSION;
1467 send_packet(hw, PRIO_SETUP, &info_packet->header);
1469 /* Initialization is now complete, so we clear the 'to_setup' flag */
1475 printk(KERN_ERR IPWIRELESS_PCCARD_NAME
1476 ": not enough memory to alloc control packet\n");
1480 static void handle_setup_get_version_rsp(struct ipw_hardware *hw,
1481 unsigned char vers_no)
1483 del_timer(&hw->setup_timer);
1484 hw->initializing = 0;
1485 printk(KERN_INFO IPWIRELESS_PCCARD_NAME ": card is ready.\n");
1487 if (vers_no == TL_SETUP_VERSION)
1488 __handle_setup_get_version_rsp(hw);
1491 IPWIRELESS_PCCARD_NAME
1492 ": invalid hardware version no %u\n",
1493 (unsigned int) vers_no);
1496 static void ipw_send_setup_packet(struct ipw_hardware *hw)
1498 struct ipw_setup_get_version_query_packet *ver_packet;
1500 ver_packet = alloc_ctrl_packet(
1501 sizeof(struct ipw_setup_get_version_query_packet),
1502 ADDR_SETUP_PROT, TL_PROTOCOLID_SETUP,
1503 TL_SETUP_SIGNO_GET_VERSION_QRY);
1504 ver_packet->header.length = sizeof(struct tl_setup_get_version_qry);
1507 * Response is handled in handle_received_SETUP_packet
1509 send_packet(hw, PRIO_SETUP, &ver_packet->header);
1512 static void handle_received_SETUP_packet(struct ipw_hardware *hw,
1513 unsigned int address,
1514 unsigned char *data, int len,
1517 union ipw_setup_rx_msg *rx_msg = (union ipw_setup_rx_msg *) data;
1519 if (address != ADDR_SETUP_PROT) {
1520 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
1521 ": setup packet has bad address %d\n", address);
1525 switch (rx_msg->sig_no) {
1526 case TL_SETUP_SIGNO_GET_VERSION_RSP:
1528 handle_setup_get_version_rsp(hw,
1529 rx_msg->version_rsp_msg.version);
1532 case TL_SETUP_SIGNO_OPEN_MSG:
1533 if (ipwireless_debug) {
1534 unsigned int channel_idx = rx_msg->open_msg.port_no - 1;
1536 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
1537 ": OPEN_MSG [channel %u] reply received\n",
1542 case TL_SETUP_SIGNO_INFO_MSG_ACK:
1543 if (ipwireless_debug)
1544 printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
1545 ": card successfully configured as NDISWAN\n");
1548 case TL_SETUP_SIGNO_REBOOT_MSG:
1550 printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
1551 ": Setup not completed - ignoring reboot msg\n");
1553 struct ipw_setup_reboot_msg_ack *packet;
1555 printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
1556 ": Acknowledging REBOOT message\n");
1557 packet = alloc_ctrl_packet(
1558 sizeof(struct ipw_setup_reboot_msg_ack),
1559 ADDR_SETUP_PROT, TL_PROTOCOLID_SETUP,
1560 TL_SETUP_SIGNO_REBOOT_MSG_ACK);
1561 packet->header.length =
1562 sizeof(struct TlSetupRebootMsgAck);
1563 send_packet(hw, PRIO_SETUP, &packet->header);
1564 if (hw->reboot_callback)
1565 hw->reboot_callback(hw->reboot_callback_data);
1570 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
1571 ": unknown setup message %u received\n",
1572 (unsigned int) rx_msg->sig_no);
1576 static void do_close_hardware(struct ipw_hardware *hw)
1580 if (hw->hw_version == HW_VERSION_1) {
1581 /* Disable TX and RX interrupts. */
1582 outw(0, hw->base_port + IOIER);
1584 /* Acknowledge any outstanding interrupt requests */
1585 irqn = inw(hw->base_port + IOIR);
1586 if (irqn & IR_TXINTR)
1587 outw(IR_TXINTR, hw->base_port + IOIR);
1588 if (irqn & IR_RXINTR)
1589 outw(IR_RXINTR, hw->base_port + IOIR);
1591 synchronize_irq(hw->irq);
1595 struct ipw_hardware *ipwireless_hardware_create(void)
1598 struct ipw_hardware *hw =
1599 kzalloc(sizeof(struct ipw_hardware), GFP_KERNEL);
1605 hw->initializing = 1;
1607 hw->rx_bytes_queued = 0;
1608 hw->rx_pool_size = 0;
1609 hw->last_memtx_serial = (unsigned short) 0xffff;
1610 for (i = 0; i < NL_NUM_OF_PRIORITIES; i++)
1611 INIT_LIST_HEAD(&hw->tx_queue[i]);
1613 INIT_LIST_HEAD(&hw->rx_queue);
1614 INIT_LIST_HEAD(&hw->rx_pool);
1615 spin_lock_init(&hw->lock);
1616 tasklet_init(&hw->tasklet, ipwireless_do_tasklet, (unsigned long) hw);
1617 INIT_WORK(&hw->work_rx, ipw_receive_data_work);
1618 setup_timer(&hw->setup_timer, ipwireless_setup_timer,
1619 (unsigned long) hw);
1624 void ipwireless_init_hardware_v1(struct ipw_hardware *hw,
1625 unsigned int base_port,
1626 void __iomem *attr_memory,
1627 void __iomem *common_memory,
1629 void (*reboot_callback) (void *data),
1630 void *reboot_callback_data)
1634 enable_irq(hw->irq);
1636 hw->base_port = base_port;
1637 hw->hw_version = (is_v2_card ? HW_VERSION_2 : HW_VERSION_1);
1638 hw->ll_mtu = (hw->hw_version == HW_VERSION_1 ? LL_MTU_V1 : LL_MTU_V2);
1639 hw->memregs_CCR = (struct MEMCCR __iomem *)
1640 ((unsigned short __iomem *) attr_memory + 0x200);
1641 hw->memory_info_regs = (struct MEMINFREG __iomem *) common_memory;
1642 hw->memreg_tx = &hw->memory_info_regs->memreg_tx_new;
1643 hw->reboot_callback = reboot_callback;
1644 hw->reboot_callback_data = reboot_callback_data;
1647 void ipwireless_init_hardware_v2_v3(struct ipw_hardware *hw)
1649 hw->initializing = 1;
1651 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
1652 ": waiting for card to start up...\n");
1653 ipwireless_setup_timer((unsigned long) hw);
1656 static void ipwireless_setup_timer(unsigned long data)
1658 struct ipw_hardware *hw = (struct ipw_hardware *) data;
1662 if (hw->init_loops == TL_SETUP_MAX_VERSION_QRY &&
1663 hw->hw_version == HW_VERSION_2 &&
1664 hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) {
1665 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
1666 ": failed to startup using TX2, trying TX\n");
1668 hw->memreg_tx = &hw->memory_info_regs->memreg_tx_old;
1671 /* Give up after a certain number of retries */
1672 if (hw->init_loops == TL_SETUP_MAX_VERSION_QRY) {
1673 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
1674 ": card failed to start up!\n");
1675 hw->initializing = 0;
1677 /* Do not attempt to write to the board if it is not present. */
1678 if (is_card_present(hw)) {
1679 unsigned long flags;
1681 spin_lock_irqsave(&hw->lock, flags);
1684 spin_unlock_irqrestore(&hw->lock, flags);
1685 tasklet_schedule(&hw->tasklet);
1688 mod_timer(&hw->setup_timer,
1689 jiffies + msecs_to_jiffies(TL_SETUP_VERSION_QRY_TMO));
1694 * Stop any interrupts from executing so that, once this function returns,
1695 * other layers of the driver can be sure they won't get any more callbacks.
1696 * Thus must be called on a proper process context.
1698 void ipwireless_stop_interrupts(struct ipw_hardware *hw)
1700 if (!hw->shutting_down) {
1701 /* Tell everyone we are going down. */
1702 hw->shutting_down = 1;
1703 del_timer(&hw->setup_timer);
1705 /* Prevent the hardware from sending any more interrupts */
1706 do_close_hardware(hw);
1710 void ipwireless_hardware_free(struct ipw_hardware *hw)
1713 struct ipw_rx_packet *rp, *rq;
1714 struct ipw_tx_packet *tp, *tq;
1716 ipwireless_stop_interrupts(hw);
1718 flush_scheduled_work();
1720 for (i = 0; i < NL_NUM_OF_ADDRESSES; i++)
1721 if (hw->packet_assembler[i] != NULL)
1722 kfree(hw->packet_assembler[i]);
1724 for (i = 0; i < NL_NUM_OF_PRIORITIES; i++)
1725 list_for_each_entry_safe(tp, tq, &hw->tx_queue[i], queue) {
1726 list_del(&tp->queue);
1730 list_for_each_entry_safe(rp, rq, &hw->rx_queue, queue) {
1731 list_del(&rp->queue);
1735 list_for_each_entry_safe(rp, rq, &hw->rx_pool, queue) {
1736 list_del(&rp->queue);
1743 * Associate the specified network with this hardware, so it will receive events
1746 void ipwireless_associate_network(struct ipw_hardware *hw,
1747 struct ipw_network *network)
1749 hw->network = network;