David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1 | /* |
| 2 | * IPWireless 3G PCMCIA Network Driver |
| 3 | * |
| 4 | * Original code |
| 5 | * by Stephen Blackheath <stephen@blacksapphire.com>, |
| 6 | * Ben Martel <benm@symmetric.co.nz> |
| 7 | * |
| 8 | * Copyrighted as follows: |
| 9 | * Copyright (C) 2004 by Symmetric Systems Ltd (NZ) |
| 10 | * |
| 11 | * Various driver changes and rewrites, port to new kernels |
| 12 | * Copyright (C) 2006-2007 Jiri Kosina |
| 13 | * |
| 14 | * Misc code cleanups and updates |
| 15 | * Copyright (C) 2007 David Sterba |
| 16 | */ |
| 17 | |
| 18 | #include <linux/interrupt.h> |
| 19 | #include <linux/io.h> |
| 20 | #include <linux/irq.h> |
| 21 | #include <linux/kernel.h> |
| 22 | #include <linux/list.h> |
| 23 | #include <linux/slab.h> |
| 24 | |
| 25 | #include "hardware.h" |
| 26 | #include "setup_protocol.h" |
| 27 | #include "network.h" |
| 28 | #include "main.h" |
| 29 | |
| 30 | static void ipw_send_setup_packet(struct ipw_hardware *hw); |
| 31 | static void handle_received_SETUP_packet(struct ipw_hardware *ipw, |
| 32 | unsigned int address, |
David Sterba | ff3e990 | 2008-07-28 16:53:11 +0200 | [diff] [blame] | 33 | const unsigned char *data, int len, |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 34 | int is_last); |
| 35 | static void ipwireless_setup_timer(unsigned long data); |
| 36 | static void handle_received_CTRL_packet(struct ipw_hardware *hw, |
David Sterba | ff3e990 | 2008-07-28 16:53:11 +0200 | [diff] [blame] | 37 | unsigned int channel_idx, const unsigned char *data, int len); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 38 | |
| 39 | /*#define TIMING_DIAGNOSTICS*/ |
| 40 | |
| 41 | #ifdef TIMING_DIAGNOSTICS |
| 42 | |
| 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; |
| 50 | }; |
| 51 | |
| 52 | static void start_timing(void) |
| 53 | { |
| 54 | timing_stats.start_time = jiffies; |
| 55 | } |
| 56 | |
| 57 | static void end_read_timing(unsigned length) |
| 58 | { |
| 59 | timing_stats.read_time += (jiffies - start_time); |
| 60 | timing_stats.read_bytes += length + 2; |
| 61 | report_timing(); |
| 62 | } |
| 63 | |
| 64 | static void end_write_timing(unsigned length) |
| 65 | { |
| 66 | timing_stats.write_time += (jiffies - start_time); |
| 67 | timing_stats.write_bytes += length + 2; |
| 68 | report_timing(); |
| 69 | } |
| 70 | |
| 71 | static void report_timing(void) |
| 72 | { |
| 73 | unsigned long since = jiffies - timing_stats.last_report_time; |
| 74 | |
| 75 | /* If it's been more than one second... */ |
| 76 | if (since >= HZ) { |
| 77 | int first = (timing_stats.last_report_time == 0); |
| 78 | |
| 79 | timing_stats.last_report_time = jiffies; |
| 80 | if (!first) |
| 81 | printk(KERN_INFO IPWIRELESS_PCCARD_NAME |
David Sterba | 622e713 | 2008-07-28 16:52:55 +0200 | [diff] [blame] | 82 | ": %u us elapsed - read %lu bytes in %u us, wrote %lu bytes in %u us\n", |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 83 | jiffies_to_usecs(since), |
| 84 | timing_stats.read_bytes, |
| 85 | jiffies_to_usecs(timing_stats.read_time), |
| 86 | timing_stats.write_bytes, |
| 87 | jiffies_to_usecs(timing_stats.write_time)); |
| 88 | |
| 89 | timing_stats.read_time = 0; |
| 90 | timing_stats.write_time = 0; |
| 91 | timing_stats.read_bytes = 0; |
| 92 | timing_stats.write_bytes = 0; |
| 93 | } |
| 94 | } |
| 95 | #else |
| 96 | static void start_timing(void) { } |
| 97 | static void end_read_timing(unsigned length) { } |
| 98 | static void end_write_timing(unsigned length) { } |
| 99 | #endif |
| 100 | |
| 101 | /* Imported IPW definitions */ |
| 102 | |
| 103 | #define LL_MTU_V1 318 |
| 104 | #define LL_MTU_V2 250 |
| 105 | #define LL_MTU_MAX (LL_MTU_V1 > LL_MTU_V2 ? LL_MTU_V1 : LL_MTU_V2) |
| 106 | |
| 107 | #define PRIO_DATA 2 |
| 108 | #define PRIO_CTRL 1 |
| 109 | #define PRIO_SETUP 0 |
| 110 | |
| 111 | /* Addresses */ |
| 112 | #define ADDR_SETUP_PROT 0 |
| 113 | |
| 114 | /* Protocol ids */ |
| 115 | enum { |
| 116 | /* Identifier for the Com Data protocol */ |
| 117 | TL_PROTOCOLID_COM_DATA = 0, |
| 118 | |
| 119 | /* Identifier for the Com Control protocol */ |
| 120 | TL_PROTOCOLID_COM_CTRL = 1, |
| 121 | |
| 122 | /* Identifier for the Setup protocol */ |
| 123 | TL_PROTOCOLID_SETUP = 2 |
| 124 | }; |
| 125 | |
| 126 | /* Number of bytes in NL packet header (cannot do |
| 127 | * sizeof(nl_packet_header) since it's a bitfield) */ |
| 128 | #define NL_FIRST_PACKET_HEADER_SIZE 3 |
| 129 | |
| 130 | /* Number of bytes in NL packet header (cannot do |
| 131 | * sizeof(nl_packet_header) since it's a bitfield) */ |
| 132 | #define NL_FOLLOWING_PACKET_HEADER_SIZE 1 |
| 133 | |
| 134 | struct nl_first_packet_header { |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 135 | unsigned char protocol:3; |
| 136 | unsigned char address:3; |
| 137 | unsigned char packet_rank:2; |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 138 | unsigned char length_lsb; |
| 139 | unsigned char length_msb; |
| 140 | }; |
| 141 | |
| 142 | struct nl_packet_header { |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 143 | unsigned char protocol:3; |
| 144 | unsigned char address:3; |
| 145 | unsigned char packet_rank:2; |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 146 | }; |
| 147 | |
| 148 | /* Value of 'packet_rank' above */ |
| 149 | #define NL_INTERMEDIATE_PACKET 0x0 |
| 150 | #define NL_LAST_PACKET 0x1 |
| 151 | #define NL_FIRST_PACKET 0x2 |
| 152 | |
| 153 | union nl_packet { |
| 154 | /* Network packet header of the first packet (a special case) */ |
| 155 | struct nl_first_packet_header hdr_first; |
| 156 | /* Network packet header of the following packets (if any) */ |
| 157 | struct nl_packet_header hdr; |
| 158 | /* Complete network packet (header + data) */ |
| 159 | unsigned char rawpkt[LL_MTU_MAX]; |
| 160 | } __attribute__ ((__packed__)); |
| 161 | |
| 162 | #define HW_VERSION_UNKNOWN -1 |
| 163 | #define HW_VERSION_1 1 |
| 164 | #define HW_VERSION_2 2 |
| 165 | |
| 166 | /* IPW I/O ports */ |
| 167 | #define IOIER 0x00 /* Interrupt Enable Register */ |
| 168 | #define IOIR 0x02 /* Interrupt Source/ACK register */ |
| 169 | #define IODCR 0x04 /* Data Control Register */ |
| 170 | #define IODRR 0x06 /* Data Read Register */ |
| 171 | #define IODWR 0x08 /* Data Write Register */ |
| 172 | #define IOESR 0x0A /* Embedded Driver Status Register */ |
| 173 | #define IORXR 0x0C /* Rx Fifo Register (Host to Embedded) */ |
| 174 | #define IOTXR 0x0E /* Tx Fifo Register (Embedded to Host) */ |
| 175 | |
| 176 | /* I/O ports and bit definitions for version 1 of the hardware */ |
| 177 | |
| 178 | /* IER bits*/ |
| 179 | #define IER_RXENABLED 0x1 |
| 180 | #define IER_TXENABLED 0x2 |
| 181 | |
| 182 | /* ISR bits */ |
| 183 | #define IR_RXINTR 0x1 |
| 184 | #define IR_TXINTR 0x2 |
| 185 | |
| 186 | /* DCR bits */ |
| 187 | #define DCR_RXDONE 0x1 |
| 188 | #define DCR_TXDONE 0x2 |
| 189 | #define DCR_RXRESET 0x4 |
| 190 | #define DCR_TXRESET 0x8 |
| 191 | |
| 192 | /* I/O ports and bit definitions for version 2 of the hardware */ |
| 193 | |
| 194 | struct MEMCCR { |
| 195 | unsigned short reg_config_option; /* PCCOR: Configuration Option Register */ |
| 196 | unsigned short reg_config_and_status; /* PCCSR: Configuration and Status Register */ |
| 197 | unsigned short reg_pin_replacement; /* PCPRR: Pin Replacemant Register */ |
| 198 | unsigned short reg_socket_and_copy; /* PCSCR: Socket and Copy Register */ |
| 199 | unsigned short reg_ext_status; /* PCESR: Extendend Status Register */ |
| 200 | unsigned short reg_io_base; /* PCIOB: I/O Base Register */ |
| 201 | }; |
| 202 | |
| 203 | struct MEMINFREG { |
| 204 | unsigned short memreg_tx_old; /* TX Register (R/W) */ |
| 205 | unsigned short pad1; |
| 206 | unsigned short memreg_rx_done; /* RXDone Register (R/W) */ |
| 207 | unsigned short pad2; |
| 208 | unsigned short memreg_rx; /* RX Register (R/W) */ |
| 209 | unsigned short pad3; |
| 210 | unsigned short memreg_pc_interrupt_ack; /* PC intr Ack Register (W) */ |
| 211 | unsigned short pad4; |
| 212 | unsigned long memreg_card_present;/* Mask for Host to check (R) for |
| 213 | * CARD_PRESENT_VALUE */ |
| 214 | unsigned short memreg_tx_new; /* TX2 (new) Register (R/W) */ |
| 215 | }; |
| 216 | |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 217 | #define CARD_PRESENT_VALUE (0xBEEFCAFEUL) |
| 218 | |
| 219 | #define MEMTX_TX 0x0001 |
| 220 | #define MEMRX_RX 0x0001 |
| 221 | #define MEMRX_RX_DONE 0x0001 |
| 222 | #define MEMRX_PCINTACKK 0x0001 |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 223 | |
| 224 | #define NL_NUM_OF_PRIORITIES 3 |
| 225 | #define NL_NUM_OF_PROTOCOLS 3 |
| 226 | #define NL_NUM_OF_ADDRESSES NO_OF_IPW_CHANNELS |
| 227 | |
| 228 | struct ipw_hardware { |
| 229 | unsigned int base_port; |
| 230 | short hw_version; |
| 231 | unsigned short ll_mtu; |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 232 | spinlock_t lock; |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 233 | |
| 234 | int initializing; |
| 235 | int init_loops; |
| 236 | struct timer_list setup_timer; |
| 237 | |
David Sterba | eb4e545 | 2008-06-06 10:56:35 +0200 | [diff] [blame] | 238 | /* Flag if hw is ready to send next packet */ |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 239 | int tx_ready; |
David Sterba | eb4e545 | 2008-06-06 10:56:35 +0200 | [diff] [blame] | 240 | /* Count of pending packets to be sent */ |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 241 | int tx_queued; |
David Sterba | eb4e545 | 2008-06-06 10:56:35 +0200 | [diff] [blame] | 242 | struct list_head tx_queue[NL_NUM_OF_PRIORITIES]; |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 243 | |
| 244 | int rx_bytes_queued; |
| 245 | struct list_head rx_queue; |
| 246 | /* Pool of rx_packet structures that are not currently used. */ |
| 247 | struct list_head rx_pool; |
| 248 | int rx_pool_size; |
| 249 | /* True if reception of data is blocked while userspace processes it. */ |
| 250 | int blocking_rx; |
| 251 | /* True if there is RX data ready on the hardware. */ |
| 252 | int rx_ready; |
| 253 | unsigned short last_memtx_serial; |
| 254 | /* |
| 255 | * Newer versions of the V2 card firmware send serial numbers in the |
| 256 | * MemTX register. 'serial_number_detected' is set true when we detect |
| 257 | * a non-zero serial number (indicating the new firmware). Thereafter, |
| 258 | * the driver can safely ignore the Timer Recovery re-sends to avoid |
| 259 | * out-of-sync problems. |
| 260 | */ |
| 261 | int serial_number_detected; |
| 262 | struct work_struct work_rx; |
| 263 | |
| 264 | /* True if we are to send the set-up data to the hardware. */ |
| 265 | int to_setup; |
| 266 | |
| 267 | /* Card has been removed */ |
| 268 | int removed; |
| 269 | /* Saved irq value when we disable the interrupt. */ |
| 270 | int irq; |
| 271 | /* True if this driver is shutting down. */ |
| 272 | int shutting_down; |
| 273 | /* Modem control lines */ |
| 274 | unsigned int control_lines[NL_NUM_OF_ADDRESSES]; |
| 275 | struct ipw_rx_packet *packet_assembler[NL_NUM_OF_ADDRESSES]; |
| 276 | |
| 277 | struct tasklet_struct tasklet; |
| 278 | |
| 279 | /* The handle for the network layer, for the sending of events to it. */ |
| 280 | struct ipw_network *network; |
| 281 | struct MEMINFREG __iomem *memory_info_regs; |
| 282 | struct MEMCCR __iomem *memregs_CCR; |
| 283 | void (*reboot_callback) (void *data); |
| 284 | void *reboot_callback_data; |
| 285 | |
| 286 | unsigned short __iomem *memreg_tx; |
| 287 | }; |
| 288 | |
| 289 | /* |
| 290 | * Packet info structure for tx packets. |
| 291 | * Note: not all the fields defined here are required for all protocols |
| 292 | */ |
| 293 | struct ipw_tx_packet { |
| 294 | struct list_head queue; |
| 295 | /* channel idx + 1 */ |
| 296 | unsigned char dest_addr; |
| 297 | /* SETUP, CTRL or DATA */ |
| 298 | unsigned char protocol; |
| 299 | /* Length of data block, which starts at the end of this structure */ |
| 300 | unsigned short length; |
| 301 | /* Sending state */ |
| 302 | /* Offset of where we've sent up to so far */ |
| 303 | unsigned long offset; |
| 304 | /* Count of packet fragments, starting at 0 */ |
| 305 | int fragment_count; |
| 306 | |
| 307 | /* Called after packet is sent and before is freed */ |
| 308 | void (*packet_callback) (void *cb_data, unsigned int packet_length); |
| 309 | void *callback_data; |
| 310 | }; |
| 311 | |
| 312 | /* Signals from DTE */ |
| 313 | #define COMCTRL_RTS 0 |
| 314 | #define COMCTRL_DTR 1 |
| 315 | |
| 316 | /* Signals from DCE */ |
| 317 | #define COMCTRL_CTS 2 |
| 318 | #define COMCTRL_DCD 3 |
| 319 | #define COMCTRL_DSR 4 |
| 320 | #define COMCTRL_RI 5 |
| 321 | |
| 322 | struct ipw_control_packet_body { |
| 323 | /* DTE signal or DCE signal */ |
| 324 | unsigned char sig_no; |
| 325 | /* 0: set signal, 1: clear signal */ |
| 326 | unsigned char value; |
| 327 | } __attribute__ ((__packed__)); |
| 328 | |
| 329 | struct ipw_control_packet { |
| 330 | struct ipw_tx_packet header; |
| 331 | struct ipw_control_packet_body body; |
| 332 | }; |
| 333 | |
| 334 | struct ipw_rx_packet { |
| 335 | struct list_head queue; |
| 336 | unsigned int capacity; |
| 337 | unsigned int length; |
| 338 | unsigned int protocol; |
| 339 | unsigned int channel_idx; |
| 340 | }; |
| 341 | |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 342 | static char *data_type(const unsigned char *buf, unsigned length) |
| 343 | { |
| 344 | struct nl_packet_header *hdr = (struct nl_packet_header *) buf; |
| 345 | |
| 346 | if (length == 0) |
| 347 | return " "; |
| 348 | |
| 349 | if (hdr->packet_rank & NL_FIRST_PACKET) { |
| 350 | switch (hdr->protocol) { |
| 351 | case TL_PROTOCOLID_COM_DATA: return "DATA "; |
| 352 | case TL_PROTOCOLID_COM_CTRL: return "CTRL "; |
| 353 | case TL_PROTOCOLID_SETUP: return "SETUP"; |
| 354 | default: return "???? "; |
| 355 | } |
| 356 | } else |
| 357 | return " "; |
| 358 | } |
| 359 | |
| 360 | #define DUMP_MAX_BYTES 64 |
| 361 | |
| 362 | static void dump_data_bytes(const char *type, const unsigned char *data, |
| 363 | unsigned length) |
| 364 | { |
| 365 | char prefix[56]; |
| 366 | |
| 367 | sprintf(prefix, IPWIRELESS_PCCARD_NAME ": %s %s ", |
| 368 | type, data_type(data, length)); |
| 369 | print_hex_dump_bytes(prefix, 0, (void *)data, |
| 370 | length < DUMP_MAX_BYTES ? length : DUMP_MAX_BYTES); |
| 371 | } |
| 372 | |
David Sterba | d54c275 | 2008-07-28 16:53:00 +0200 | [diff] [blame] | 373 | static void swap_packet_bitfield_to_le(unsigned char *data) |
| 374 | { |
| 375 | #ifdef __BIG_ENDIAN_BITFIELD |
| 376 | unsigned char tmp = *data, ret = 0; |
| 377 | |
| 378 | /* |
| 379 | * transform bits from aa.bbb.ccc to ccc.bbb.aa |
| 380 | */ |
| 381 | ret |= tmp & 0xc0 >> 6; |
| 382 | ret |= tmp & 0x38 >> 1; |
| 383 | ret |= tmp & 0x07 << 5; |
| 384 | *data = ret & 0xff; |
| 385 | #endif |
| 386 | } |
| 387 | |
| 388 | static void swap_packet_bitfield_from_le(unsigned char *data) |
| 389 | { |
| 390 | #ifdef __BIG_ENDIAN_BITFIELD |
| 391 | unsigned char tmp = *data, ret = 0; |
| 392 | |
| 393 | /* |
| 394 | * transform bits from ccc.bbb.aa to aa.bbb.ccc |
| 395 | */ |
| 396 | ret |= tmp & 0xe0 >> 5; |
| 397 | ret |= tmp & 0x1c << 1; |
| 398 | ret |= tmp & 0x03 << 6; |
| 399 | *data = ret & 0xff; |
| 400 | #endif |
| 401 | } |
| 402 | |
David Sterba | 93110f6 | 2008-07-28 16:53:05 +0200 | [diff] [blame] | 403 | static void do_send_fragment(struct ipw_hardware *hw, unsigned char *data, |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 404 | unsigned length) |
| 405 | { |
David Sterba | d4c0deb | 2008-07-28 16:52:33 +0200 | [diff] [blame] | 406 | unsigned i; |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 407 | unsigned long flags; |
| 408 | |
| 409 | start_timing(); |
David Sterba | 93110f6 | 2008-07-28 16:53:05 +0200 | [diff] [blame] | 410 | BUG_ON(length > hw->ll_mtu); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 411 | |
| 412 | if (ipwireless_debug) |
| 413 | dump_data_bytes("send", data, length); |
| 414 | |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 415 | spin_lock_irqsave(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 416 | |
David Sterba | eb4e545 | 2008-06-06 10:56:35 +0200 | [diff] [blame] | 417 | hw->tx_ready = 0; |
David Sterba | d54c275 | 2008-07-28 16:53:00 +0200 | [diff] [blame] | 418 | swap_packet_bitfield_to_le(data); |
David Sterba | eb4e545 | 2008-06-06 10:56:35 +0200 | [diff] [blame] | 419 | |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 420 | if (hw->hw_version == HW_VERSION_1) { |
| 421 | outw((unsigned short) length, hw->base_port + IODWR); |
| 422 | |
| 423 | for (i = 0; i < length; i += 2) { |
| 424 | unsigned short d = data[i]; |
| 425 | __le16 raw_data; |
| 426 | |
David Sterba | d4c0deb | 2008-07-28 16:52:33 +0200 | [diff] [blame] | 427 | if (i + 1 < length) |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 428 | d |= data[i + 1] << 8; |
| 429 | raw_data = cpu_to_le16(d); |
| 430 | outw(raw_data, hw->base_port + IODWR); |
| 431 | } |
| 432 | |
| 433 | outw(DCR_TXDONE, hw->base_port + IODCR); |
| 434 | } else if (hw->hw_version == HW_VERSION_2) { |
David Sterba | 2e71316 | 2008-07-28 16:52:39 +0200 | [diff] [blame] | 435 | outw((unsigned short) length, hw->base_port); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 436 | |
| 437 | for (i = 0; i < length; i += 2) { |
| 438 | unsigned short d = data[i]; |
| 439 | __le16 raw_data; |
| 440 | |
David Sterba | d4c0deb | 2008-07-28 16:52:33 +0200 | [diff] [blame] | 441 | if (i + 1 < length) |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 442 | d |= data[i + 1] << 8; |
| 443 | raw_data = cpu_to_le16(d); |
David Sterba | 2e71316 | 2008-07-28 16:52:39 +0200 | [diff] [blame] | 444 | outw(raw_data, hw->base_port); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 445 | } |
| 446 | while ((i & 3) != 2) { |
David Sterba | 2e71316 | 2008-07-28 16:52:39 +0200 | [diff] [blame] | 447 | outw((unsigned short) 0xDEAD, hw->base_port); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 448 | i += 2; |
| 449 | } |
| 450 | writew(MEMRX_RX, &hw->memory_info_regs->memreg_rx); |
| 451 | } |
| 452 | |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 453 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 454 | |
| 455 | end_write_timing(length); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 456 | } |
| 457 | |
David Sterba | 93110f6 | 2008-07-28 16:53:05 +0200 | [diff] [blame] | 458 | static void do_send_packet(struct ipw_hardware *hw, struct ipw_tx_packet *packet) |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 459 | { |
| 460 | unsigned short fragment_data_len; |
| 461 | unsigned short data_left = packet->length - packet->offset; |
| 462 | unsigned short header_size; |
| 463 | union nl_packet pkt; |
| 464 | |
| 465 | header_size = |
| 466 | (packet->fragment_count == 0) |
| 467 | ? NL_FIRST_PACKET_HEADER_SIZE |
| 468 | : NL_FOLLOWING_PACKET_HEADER_SIZE; |
| 469 | fragment_data_len = hw->ll_mtu - header_size; |
| 470 | if (data_left < fragment_data_len) |
| 471 | fragment_data_len = data_left; |
| 472 | |
David Sterba | d54c275 | 2008-07-28 16:53:00 +0200 | [diff] [blame] | 473 | /* |
| 474 | * hdr_first is now in machine bitfield order, which will be swapped |
| 475 | * to le just before it goes to hw |
| 476 | */ |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 477 | pkt.hdr_first.protocol = packet->protocol; |
| 478 | pkt.hdr_first.address = packet->dest_addr; |
| 479 | pkt.hdr_first.packet_rank = 0; |
| 480 | |
| 481 | /* First packet? */ |
| 482 | if (packet->fragment_count == 0) { |
| 483 | pkt.hdr_first.packet_rank |= NL_FIRST_PACKET; |
| 484 | pkt.hdr_first.length_lsb = (unsigned char) packet->length; |
| 485 | pkt.hdr_first.length_msb = |
| 486 | (unsigned char) (packet->length >> 8); |
| 487 | } |
| 488 | |
| 489 | memcpy(pkt.rawpkt + header_size, |
| 490 | ((unsigned char *) packet) + sizeof(struct ipw_tx_packet) + |
| 491 | packet->offset, fragment_data_len); |
| 492 | packet->offset += fragment_data_len; |
| 493 | packet->fragment_count++; |
| 494 | |
| 495 | /* Last packet? (May also be first packet.) */ |
| 496 | if (packet->offset == packet->length) |
| 497 | pkt.hdr_first.packet_rank |= NL_LAST_PACKET; |
| 498 | do_send_fragment(hw, pkt.rawpkt, header_size + fragment_data_len); |
| 499 | |
| 500 | /* If this packet has unsent data, then re-queue it. */ |
| 501 | if (packet->offset < packet->length) { |
| 502 | /* |
| 503 | * Re-queue it at the head of the highest priority queue so |
| 504 | * it goes before all other packets |
| 505 | */ |
| 506 | unsigned long flags; |
| 507 | |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 508 | spin_lock_irqsave(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 509 | list_add(&packet->queue, &hw->tx_queue[0]); |
David Sterba | eb4e545 | 2008-06-06 10:56:35 +0200 | [diff] [blame] | 510 | hw->tx_queued++; |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 511 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 512 | } else { |
| 513 | if (packet->packet_callback) |
| 514 | packet->packet_callback(packet->callback_data, |
| 515 | packet->length); |
| 516 | kfree(packet); |
| 517 | } |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 518 | } |
| 519 | |
| 520 | static void ipw_setup_hardware(struct ipw_hardware *hw) |
| 521 | { |
| 522 | unsigned long flags; |
| 523 | |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 524 | spin_lock_irqsave(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 525 | if (hw->hw_version == HW_VERSION_1) { |
| 526 | /* Reset RX FIFO */ |
| 527 | outw(DCR_RXRESET, hw->base_port + IODCR); |
| 528 | /* SB: Reset TX FIFO */ |
| 529 | outw(DCR_TXRESET, hw->base_port + IODCR); |
| 530 | |
| 531 | /* Enable TX and RX interrupts. */ |
| 532 | outw(IER_TXENABLED | IER_RXENABLED, hw->base_port + IOIER); |
| 533 | } else { |
| 534 | /* |
| 535 | * Set INTRACK bit (bit 0), which means we must explicitly |
| 536 | * acknowledge interrupts by clearing bit 2 of reg_config_and_status. |
| 537 | */ |
| 538 | unsigned short csr = readw(&hw->memregs_CCR->reg_config_and_status); |
| 539 | |
| 540 | csr |= 1; |
| 541 | writew(csr, &hw->memregs_CCR->reg_config_and_status); |
| 542 | } |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 543 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 544 | } |
| 545 | |
| 546 | /* |
| 547 | * If 'packet' is NULL, then this function allocates a new packet, setting its |
| 548 | * length to 0 and ensuring it has the specified minimum amount of free space. |
| 549 | * |
| 550 | * If 'packet' is not NULL, then this function enlarges it if it doesn't |
| 551 | * have the specified minimum amount of free space. |
| 552 | * |
| 553 | */ |
| 554 | static struct ipw_rx_packet *pool_allocate(struct ipw_hardware *hw, |
| 555 | struct ipw_rx_packet *packet, |
| 556 | int minimum_free_space) |
| 557 | { |
| 558 | |
| 559 | if (!packet) { |
| 560 | unsigned long flags; |
| 561 | |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 562 | spin_lock_irqsave(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 563 | if (!list_empty(&hw->rx_pool)) { |
| 564 | packet = list_first_entry(&hw->rx_pool, |
| 565 | struct ipw_rx_packet, queue); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 566 | hw->rx_pool_size--; |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 567 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 0f38c47 | 2008-07-28 16:53:27 +0200 | [diff] [blame] | 568 | list_del(&packet->queue); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 569 | } else { |
David Sterba | a013869 | 2008-07-28 16:53:32 +0200 | [diff] [blame] | 570 | const int min_capacity = |
James Bottomley | 3684a60 | 2008-07-28 17:11:44 -0500 | [diff] [blame] | 571 | ipwireless_ppp_mru(hw->network) + 2; |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 572 | int new_capacity; |
| 573 | |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 574 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 575 | new_capacity = |
David Sterba | d4c0deb | 2008-07-28 16:52:33 +0200 | [diff] [blame] | 576 | (minimum_free_space > min_capacity |
| 577 | ? minimum_free_space |
| 578 | : min_capacity); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 579 | packet = kmalloc(sizeof(struct ipw_rx_packet) |
| 580 | + new_capacity, GFP_ATOMIC); |
| 581 | if (!packet) |
| 582 | return NULL; |
| 583 | packet->capacity = new_capacity; |
| 584 | } |
| 585 | packet->length = 0; |
| 586 | } |
| 587 | |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 588 | if (packet->length + minimum_free_space > packet->capacity) { |
| 589 | struct ipw_rx_packet *old_packet = packet; |
| 590 | |
| 591 | packet = kmalloc(sizeof(struct ipw_rx_packet) + |
| 592 | old_packet->length + minimum_free_space, |
| 593 | GFP_ATOMIC); |
Darren Jenkins | 43f77e9 | 2008-07-12 13:47:49 -0700 | [diff] [blame] | 594 | if (!packet) { |
| 595 | kfree(old_packet); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 596 | return NULL; |
Darren Jenkins | 43f77e9 | 2008-07-12 13:47:49 -0700 | [diff] [blame] | 597 | } |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 598 | memcpy(packet, old_packet, |
| 599 | sizeof(struct ipw_rx_packet) |
| 600 | + old_packet->length); |
| 601 | packet->capacity = old_packet->length + minimum_free_space; |
| 602 | kfree(old_packet); |
| 603 | } |
| 604 | |
| 605 | return packet; |
| 606 | } |
| 607 | |
| 608 | static void pool_free(struct ipw_hardware *hw, struct ipw_rx_packet *packet) |
| 609 | { |
| 610 | if (hw->rx_pool_size > 6) |
| 611 | kfree(packet); |
| 612 | else { |
| 613 | hw->rx_pool_size++; |
David Sterba | 0f38c47 | 2008-07-28 16:53:27 +0200 | [diff] [blame] | 614 | list_add(&packet->queue, &hw->rx_pool); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 615 | } |
| 616 | } |
| 617 | |
| 618 | static void queue_received_packet(struct ipw_hardware *hw, |
David Sterba | ff3e990 | 2008-07-28 16:53:11 +0200 | [diff] [blame] | 619 | unsigned int protocol, |
| 620 | unsigned int address, |
| 621 | const unsigned char *data, int length, |
| 622 | int is_last) |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 623 | { |
| 624 | unsigned int channel_idx = address - 1; |
| 625 | struct ipw_rx_packet *packet = NULL; |
| 626 | unsigned long flags; |
| 627 | |
| 628 | /* Discard packet if channel index is out of range. */ |
| 629 | if (channel_idx >= NL_NUM_OF_ADDRESSES) { |
| 630 | printk(KERN_INFO IPWIRELESS_PCCARD_NAME |
| 631 | ": data packet has bad address %u\n", address); |
| 632 | return; |
| 633 | } |
| 634 | |
| 635 | /* |
| 636 | * ->packet_assembler is safe to touch unlocked, this is the only place |
| 637 | */ |
| 638 | if (protocol == TL_PROTOCOLID_COM_DATA) { |
| 639 | struct ipw_rx_packet **assem = |
| 640 | &hw->packet_assembler[channel_idx]; |
| 641 | |
| 642 | /* |
| 643 | * Create a new packet, or assembler already contains one |
| 644 | * enlarge it by 'length' bytes. |
| 645 | */ |
| 646 | (*assem) = pool_allocate(hw, *assem, length); |
| 647 | if (!(*assem)) { |
| 648 | printk(KERN_ERR IPWIRELESS_PCCARD_NAME |
| 649 | ": no memory for incomming data packet, dropped!\n"); |
| 650 | return; |
| 651 | } |
| 652 | (*assem)->protocol = protocol; |
| 653 | (*assem)->channel_idx = channel_idx; |
| 654 | |
| 655 | /* Append this packet data onto existing data. */ |
| 656 | memcpy((unsigned char *)(*assem) + |
| 657 | sizeof(struct ipw_rx_packet) |
| 658 | + (*assem)->length, data, length); |
| 659 | (*assem)->length += length; |
| 660 | if (is_last) { |
| 661 | packet = *assem; |
| 662 | *assem = NULL; |
| 663 | /* Count queued DATA bytes only */ |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 664 | spin_lock_irqsave(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 665 | hw->rx_bytes_queued += packet->length; |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 666 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 667 | } |
| 668 | } else { |
| 669 | /* If it's a CTRL packet, don't assemble, just queue it. */ |
| 670 | packet = pool_allocate(hw, NULL, length); |
| 671 | if (!packet) { |
| 672 | printk(KERN_ERR IPWIRELESS_PCCARD_NAME |
| 673 | ": no memory for incomming ctrl packet, dropped!\n"); |
| 674 | return; |
| 675 | } |
| 676 | packet->protocol = protocol; |
| 677 | packet->channel_idx = channel_idx; |
| 678 | memcpy((unsigned char *)packet + sizeof(struct ipw_rx_packet), |
| 679 | data, length); |
| 680 | packet->length = length; |
| 681 | } |
| 682 | |
| 683 | /* |
| 684 | * If this is the last packet, then send the assembled packet on to the |
| 685 | * network layer. |
| 686 | */ |
| 687 | if (packet) { |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 688 | spin_lock_irqsave(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 689 | list_add_tail(&packet->queue, &hw->rx_queue); |
| 690 | /* Block reception of incoming packets if queue is full. */ |
| 691 | hw->blocking_rx = |
David Sterba | d4c0deb | 2008-07-28 16:52:33 +0200 | [diff] [blame] | 692 | (hw->rx_bytes_queued >= IPWIRELESS_RX_QUEUE_SIZE); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 693 | |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 694 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 695 | schedule_work(&hw->work_rx); |
| 696 | } |
| 697 | } |
| 698 | |
| 699 | /* |
| 700 | * Workqueue callback |
| 701 | */ |
| 702 | static void ipw_receive_data_work(struct work_struct *work_rx) |
| 703 | { |
| 704 | struct ipw_hardware *hw = |
| 705 | container_of(work_rx, struct ipw_hardware, work_rx); |
| 706 | unsigned long flags; |
| 707 | |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 708 | spin_lock_irqsave(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 709 | while (!list_empty(&hw->rx_queue)) { |
| 710 | struct ipw_rx_packet *packet = |
| 711 | list_first_entry(&hw->rx_queue, |
| 712 | struct ipw_rx_packet, queue); |
| 713 | |
| 714 | if (hw->shutting_down) |
| 715 | break; |
| 716 | list_del(&packet->queue); |
| 717 | |
| 718 | /* |
| 719 | * Note: ipwireless_network_packet_received must be called in a |
| 720 | * process context (i.e. via schedule_work) because the tty |
| 721 | * output code can sleep in the tty_flip_buffer_push call. |
| 722 | */ |
| 723 | if (packet->protocol == TL_PROTOCOLID_COM_DATA) { |
| 724 | if (hw->network != NULL) { |
| 725 | /* If the network hasn't been disconnected. */ |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 726 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 727 | /* |
| 728 | * This must run unlocked due to tty processing |
| 729 | * and mutex locking |
| 730 | */ |
| 731 | ipwireless_network_packet_received( |
| 732 | hw->network, |
| 733 | packet->channel_idx, |
| 734 | (unsigned char *)packet |
| 735 | + sizeof(struct ipw_rx_packet), |
| 736 | packet->length); |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 737 | spin_lock_irqsave(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 738 | } |
| 739 | /* Count queued DATA bytes only */ |
| 740 | hw->rx_bytes_queued -= packet->length; |
| 741 | } else { |
| 742 | /* |
| 743 | * This is safe to be called locked, callchain does |
| 744 | * not block |
| 745 | */ |
| 746 | handle_received_CTRL_packet(hw, packet->channel_idx, |
| 747 | (unsigned char *)packet |
| 748 | + sizeof(struct ipw_rx_packet), |
| 749 | packet->length); |
| 750 | } |
| 751 | pool_free(hw, packet); |
| 752 | /* |
| 753 | * Unblock reception of incoming packets if queue is no longer |
| 754 | * full. |
| 755 | */ |
| 756 | hw->blocking_rx = |
| 757 | hw->rx_bytes_queued >= IPWIRELESS_RX_QUEUE_SIZE; |
| 758 | if (hw->shutting_down) |
| 759 | break; |
| 760 | } |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 761 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 762 | } |
| 763 | |
| 764 | static void handle_received_CTRL_packet(struct ipw_hardware *hw, |
| 765 | unsigned int channel_idx, |
David Sterba | ff3e990 | 2008-07-28 16:53:11 +0200 | [diff] [blame] | 766 | const unsigned char *data, int len) |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 767 | { |
David Sterba | ff3e990 | 2008-07-28 16:53:11 +0200 | [diff] [blame] | 768 | const struct ipw_control_packet_body *body = |
| 769 | (const struct ipw_control_packet_body *) data; |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 770 | unsigned int changed_mask; |
| 771 | |
| 772 | if (len != sizeof(struct ipw_control_packet_body)) { |
| 773 | printk(KERN_INFO IPWIRELESS_PCCARD_NAME |
| 774 | ": control packet was %d bytes - wrong size!\n", |
| 775 | len); |
| 776 | return; |
| 777 | } |
| 778 | |
| 779 | switch (body->sig_no) { |
| 780 | case COMCTRL_CTS: |
| 781 | changed_mask = IPW_CONTROL_LINE_CTS; |
| 782 | break; |
| 783 | case COMCTRL_DCD: |
| 784 | changed_mask = IPW_CONTROL_LINE_DCD; |
| 785 | break; |
| 786 | case COMCTRL_DSR: |
| 787 | changed_mask = IPW_CONTROL_LINE_DSR; |
| 788 | break; |
| 789 | case COMCTRL_RI: |
| 790 | changed_mask = IPW_CONTROL_LINE_RI; |
| 791 | break; |
| 792 | default: |
| 793 | changed_mask = 0; |
| 794 | } |
| 795 | |
| 796 | if (changed_mask != 0) { |
| 797 | if (body->value) |
| 798 | hw->control_lines[channel_idx] |= changed_mask; |
| 799 | else |
| 800 | hw->control_lines[channel_idx] &= ~changed_mask; |
| 801 | if (hw->network) |
| 802 | ipwireless_network_notify_control_line_change( |
| 803 | hw->network, |
| 804 | channel_idx, |
| 805 | hw->control_lines[channel_idx], |
| 806 | changed_mask); |
| 807 | } |
| 808 | } |
| 809 | |
| 810 | static void handle_received_packet(struct ipw_hardware *hw, |
David Sterba | ff3e990 | 2008-07-28 16:53:11 +0200 | [diff] [blame] | 811 | const union nl_packet *packet, |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 812 | unsigned short len) |
| 813 | { |
| 814 | unsigned int protocol = packet->hdr.protocol; |
| 815 | unsigned int address = packet->hdr.address; |
| 816 | unsigned int header_length; |
David Sterba | ff3e990 | 2008-07-28 16:53:11 +0200 | [diff] [blame] | 817 | const unsigned char *data; |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 818 | unsigned int data_len; |
| 819 | int is_last = packet->hdr.packet_rank & NL_LAST_PACKET; |
| 820 | |
| 821 | if (packet->hdr.packet_rank & NL_FIRST_PACKET) |
| 822 | header_length = NL_FIRST_PACKET_HEADER_SIZE; |
| 823 | else |
| 824 | header_length = NL_FOLLOWING_PACKET_HEADER_SIZE; |
| 825 | |
| 826 | data = packet->rawpkt + header_length; |
| 827 | data_len = len - header_length; |
| 828 | switch (protocol) { |
| 829 | case TL_PROTOCOLID_COM_DATA: |
| 830 | case TL_PROTOCOLID_COM_CTRL: |
| 831 | queue_received_packet(hw, protocol, address, data, data_len, |
| 832 | is_last); |
| 833 | break; |
| 834 | case TL_PROTOCOLID_SETUP: |
| 835 | handle_received_SETUP_packet(hw, address, data, data_len, |
| 836 | is_last); |
| 837 | break; |
| 838 | } |
| 839 | } |
| 840 | |
| 841 | static void acknowledge_data_read(struct ipw_hardware *hw) |
| 842 | { |
| 843 | if (hw->hw_version == HW_VERSION_1) |
| 844 | outw(DCR_RXDONE, hw->base_port + IODCR); |
| 845 | else |
| 846 | writew(MEMRX_PCINTACKK, |
| 847 | &hw->memory_info_regs->memreg_pc_interrupt_ack); |
| 848 | } |
| 849 | |
| 850 | /* |
| 851 | * Retrieve a packet from the IPW hardware. |
| 852 | */ |
| 853 | static void do_receive_packet(struct ipw_hardware *hw) |
| 854 | { |
| 855 | unsigned len; |
David Sterba | d4c0deb | 2008-07-28 16:52:33 +0200 | [diff] [blame] | 856 | unsigned i; |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 857 | unsigned char pkt[LL_MTU_MAX]; |
| 858 | |
| 859 | start_timing(); |
| 860 | |
| 861 | if (hw->hw_version == HW_VERSION_1) { |
| 862 | len = inw(hw->base_port + IODRR); |
| 863 | if (len > hw->ll_mtu) { |
| 864 | printk(KERN_INFO IPWIRELESS_PCCARD_NAME |
David Sterba | 622e713 | 2008-07-28 16:52:55 +0200 | [diff] [blame] | 865 | ": received a packet of %u bytes - longer than the MTU!\n", len); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 866 | outw(DCR_RXDONE | DCR_RXRESET, hw->base_port + IODCR); |
| 867 | return; |
| 868 | } |
| 869 | |
| 870 | for (i = 0; i < len; i += 2) { |
| 871 | __le16 raw_data = inw(hw->base_port + IODRR); |
| 872 | unsigned short data = le16_to_cpu(raw_data); |
| 873 | |
| 874 | pkt[i] = (unsigned char) data; |
| 875 | pkt[i + 1] = (unsigned char) (data >> 8); |
| 876 | } |
| 877 | } else { |
David Sterba | 2e71316 | 2008-07-28 16:52:39 +0200 | [diff] [blame] | 878 | len = inw(hw->base_port); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 879 | if (len > hw->ll_mtu) { |
| 880 | printk(KERN_INFO IPWIRELESS_PCCARD_NAME |
David Sterba | 622e713 | 2008-07-28 16:52:55 +0200 | [diff] [blame] | 881 | ": received a packet of %u bytes - longer than the MTU!\n", len); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 882 | writew(MEMRX_PCINTACKK, |
| 883 | &hw->memory_info_regs->memreg_pc_interrupt_ack); |
| 884 | return; |
| 885 | } |
| 886 | |
| 887 | for (i = 0; i < len; i += 2) { |
David Sterba | 2e71316 | 2008-07-28 16:52:39 +0200 | [diff] [blame] | 888 | __le16 raw_data = inw(hw->base_port); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 889 | unsigned short data = le16_to_cpu(raw_data); |
| 890 | |
| 891 | pkt[i] = (unsigned char) data; |
| 892 | pkt[i + 1] = (unsigned char) (data >> 8); |
| 893 | } |
| 894 | |
| 895 | while ((i & 3) != 2) { |
David Sterba | 2e71316 | 2008-07-28 16:52:39 +0200 | [diff] [blame] | 896 | inw(hw->base_port); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 897 | i += 2; |
| 898 | } |
| 899 | } |
| 900 | |
| 901 | acknowledge_data_read(hw); |
| 902 | |
David Sterba | d54c275 | 2008-07-28 16:53:00 +0200 | [diff] [blame] | 903 | swap_packet_bitfield_from_le(pkt); |
| 904 | |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 905 | if (ipwireless_debug) |
| 906 | dump_data_bytes("recv", pkt, len); |
| 907 | |
| 908 | handle_received_packet(hw, (union nl_packet *) pkt, len); |
| 909 | |
| 910 | end_read_timing(len); |
| 911 | } |
| 912 | |
| 913 | static int get_current_packet_priority(struct ipw_hardware *hw) |
| 914 | { |
| 915 | /* |
| 916 | * If we're initializing, don't send anything of higher priority than |
| 917 | * PRIO_SETUP. The network layer therefore need not care about |
| 918 | * hardware initialization - any of its stuff will simply be queued |
| 919 | * until setup is complete. |
| 920 | */ |
| 921 | return (hw->to_setup || hw->initializing |
David Sterba | d4c0deb | 2008-07-28 16:52:33 +0200 | [diff] [blame] | 922 | ? PRIO_SETUP + 1 : NL_NUM_OF_PRIORITIES); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 923 | } |
| 924 | |
| 925 | /* |
| 926 | * return 1 if something has been received from hw |
| 927 | */ |
| 928 | static int get_packets_from_hw(struct ipw_hardware *hw) |
| 929 | { |
| 930 | int received = 0; |
| 931 | unsigned long flags; |
| 932 | |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 933 | spin_lock_irqsave(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 934 | while (hw->rx_ready && !hw->blocking_rx) { |
| 935 | received = 1; |
| 936 | hw->rx_ready--; |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 937 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 938 | |
| 939 | do_receive_packet(hw); |
| 940 | |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 941 | spin_lock_irqsave(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 942 | } |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 943 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 944 | |
| 945 | return received; |
| 946 | } |
| 947 | |
| 948 | /* |
| 949 | * Send pending packet up to given priority, prioritize SETUP data until |
| 950 | * hardware is fully setup. |
| 951 | * |
| 952 | * return 1 if more packets can be sent |
| 953 | */ |
| 954 | static int send_pending_packet(struct ipw_hardware *hw, int priority_limit) |
| 955 | { |
| 956 | int more_to_send = 0; |
| 957 | unsigned long flags; |
| 958 | |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 959 | spin_lock_irqsave(&hw->lock, flags); |
David Sterba | eb4e545 | 2008-06-06 10:56:35 +0200 | [diff] [blame] | 960 | if (hw->tx_queued && hw->tx_ready) { |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 961 | int priority; |
| 962 | struct ipw_tx_packet *packet = NULL; |
| 963 | |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 964 | /* Pick a packet */ |
| 965 | for (priority = 0; priority < priority_limit; priority++) { |
| 966 | if (!list_empty(&hw->tx_queue[priority])) { |
| 967 | packet = list_first_entry( |
| 968 | &hw->tx_queue[priority], |
| 969 | struct ipw_tx_packet, |
| 970 | queue); |
| 971 | |
David Sterba | eb4e545 | 2008-06-06 10:56:35 +0200 | [diff] [blame] | 972 | hw->tx_queued--; |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 973 | list_del(&packet->queue); |
| 974 | |
| 975 | break; |
| 976 | } |
| 977 | } |
| 978 | if (!packet) { |
| 979 | hw->tx_queued = 0; |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 980 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 981 | return 0; |
| 982 | } |
David Sterba | eb4e545 | 2008-06-06 10:56:35 +0200 | [diff] [blame] | 983 | |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 984 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 985 | |
| 986 | /* Send */ |
| 987 | do_send_packet(hw, packet); |
| 988 | |
| 989 | /* Check if more to send */ |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 990 | spin_lock_irqsave(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 991 | for (priority = 0; priority < priority_limit; priority++) |
| 992 | if (!list_empty(&hw->tx_queue[priority])) { |
| 993 | more_to_send = 1; |
| 994 | break; |
| 995 | } |
| 996 | |
| 997 | if (!more_to_send) |
| 998 | hw->tx_queued = 0; |
| 999 | } |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 1000 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1001 | |
| 1002 | return more_to_send; |
| 1003 | } |
| 1004 | |
| 1005 | /* |
| 1006 | * Send and receive all queued packets. |
| 1007 | */ |
| 1008 | static void ipwireless_do_tasklet(unsigned long hw_) |
| 1009 | { |
| 1010 | struct ipw_hardware *hw = (struct ipw_hardware *) hw_; |
| 1011 | unsigned long flags; |
| 1012 | |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 1013 | spin_lock_irqsave(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1014 | if (hw->shutting_down) { |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 1015 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1016 | return; |
| 1017 | } |
| 1018 | |
| 1019 | if (hw->to_setup == 1) { |
| 1020 | /* |
| 1021 | * Initial setup data sent to hardware |
| 1022 | */ |
| 1023 | hw->to_setup = 2; |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 1024 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1025 | |
| 1026 | ipw_setup_hardware(hw); |
| 1027 | ipw_send_setup_packet(hw); |
| 1028 | |
| 1029 | send_pending_packet(hw, PRIO_SETUP + 1); |
| 1030 | get_packets_from_hw(hw); |
| 1031 | } else { |
| 1032 | int priority_limit = get_current_packet_priority(hw); |
| 1033 | int again; |
| 1034 | |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 1035 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1036 | |
| 1037 | do { |
| 1038 | again = send_pending_packet(hw, priority_limit); |
| 1039 | again |= get_packets_from_hw(hw); |
| 1040 | } while (again); |
| 1041 | } |
| 1042 | } |
| 1043 | |
| 1044 | /* |
| 1045 | * return true if the card is physically present. |
| 1046 | */ |
| 1047 | static int is_card_present(struct ipw_hardware *hw) |
| 1048 | { |
| 1049 | if (hw->hw_version == HW_VERSION_1) |
| 1050 | return inw(hw->base_port + IOIR) != 0xFFFF; |
| 1051 | else |
| 1052 | return readl(&hw->memory_info_regs->memreg_card_present) == |
| 1053 | CARD_PRESENT_VALUE; |
| 1054 | } |
| 1055 | |
| 1056 | static irqreturn_t ipwireless_handle_v1_interrupt(int irq, |
| 1057 | struct ipw_hardware *hw) |
| 1058 | { |
| 1059 | unsigned short irqn; |
| 1060 | |
| 1061 | irqn = inw(hw->base_port + IOIR); |
| 1062 | |
| 1063 | /* Check if card is present */ |
| 1064 | if (irqn == 0xFFFF) |
| 1065 | return IRQ_NONE; |
| 1066 | else if (irqn != 0) { |
| 1067 | unsigned short ack = 0; |
| 1068 | unsigned long flags; |
| 1069 | |
| 1070 | /* Transmit complete. */ |
| 1071 | if (irqn & IR_TXINTR) { |
| 1072 | ack |= IR_TXINTR; |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 1073 | spin_lock_irqsave(&hw->lock, flags); |
David Sterba | eb4e545 | 2008-06-06 10:56:35 +0200 | [diff] [blame] | 1074 | hw->tx_ready = 1; |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 1075 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1076 | } |
| 1077 | /* Received data */ |
| 1078 | if (irqn & IR_RXINTR) { |
| 1079 | ack |= IR_RXINTR; |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 1080 | spin_lock_irqsave(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1081 | hw->rx_ready++; |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 1082 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1083 | } |
| 1084 | if (ack != 0) { |
| 1085 | outw(ack, hw->base_port + IOIR); |
| 1086 | tasklet_schedule(&hw->tasklet); |
| 1087 | } |
| 1088 | return IRQ_HANDLED; |
| 1089 | } |
| 1090 | return IRQ_NONE; |
| 1091 | } |
| 1092 | |
| 1093 | static void acknowledge_pcmcia_interrupt(struct ipw_hardware *hw) |
| 1094 | { |
| 1095 | unsigned short csr = readw(&hw->memregs_CCR->reg_config_and_status); |
| 1096 | |
| 1097 | csr &= 0xfffd; |
| 1098 | writew(csr, &hw->memregs_CCR->reg_config_and_status); |
| 1099 | } |
| 1100 | |
| 1101 | static irqreturn_t ipwireless_handle_v2_v3_interrupt(int irq, |
| 1102 | struct ipw_hardware *hw) |
| 1103 | { |
| 1104 | int tx = 0; |
| 1105 | int rx = 0; |
| 1106 | int rx_repeat = 0; |
| 1107 | int try_mem_tx_old; |
| 1108 | unsigned long flags; |
| 1109 | |
| 1110 | do { |
| 1111 | |
| 1112 | unsigned short memtx = readw(hw->memreg_tx); |
| 1113 | unsigned short memtx_serial; |
| 1114 | unsigned short memrxdone = |
| 1115 | readw(&hw->memory_info_regs->memreg_rx_done); |
| 1116 | |
| 1117 | try_mem_tx_old = 0; |
| 1118 | |
| 1119 | /* check whether the interrupt was generated by ipwireless card */ |
| 1120 | if (!(memtx & MEMTX_TX) && !(memrxdone & MEMRX_RX_DONE)) { |
| 1121 | |
| 1122 | /* check if the card uses memreg_tx_old register */ |
| 1123 | if (hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) { |
| 1124 | memtx = readw(&hw->memory_info_regs->memreg_tx_old); |
| 1125 | if (memtx & MEMTX_TX) { |
| 1126 | printk(KERN_INFO IPWIRELESS_PCCARD_NAME |
| 1127 | ": Using memreg_tx_old\n"); |
| 1128 | hw->memreg_tx = |
| 1129 | &hw->memory_info_regs->memreg_tx_old; |
| 1130 | } else { |
| 1131 | return IRQ_NONE; |
| 1132 | } |
David Sterba | d4c0deb | 2008-07-28 16:52:33 +0200 | [diff] [blame] | 1133 | } else |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1134 | return IRQ_NONE; |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1135 | } |
| 1136 | |
| 1137 | /* |
| 1138 | * See if the card is physically present. Note that while it is |
| 1139 | * powering up, it appears not to be present. |
| 1140 | */ |
| 1141 | if (!is_card_present(hw)) { |
| 1142 | acknowledge_pcmcia_interrupt(hw); |
| 1143 | return IRQ_HANDLED; |
| 1144 | } |
| 1145 | |
| 1146 | memtx_serial = memtx & (unsigned short) 0xff00; |
| 1147 | if (memtx & MEMTX_TX) { |
| 1148 | writew(memtx_serial, hw->memreg_tx); |
| 1149 | |
| 1150 | if (hw->serial_number_detected) { |
| 1151 | if (memtx_serial != hw->last_memtx_serial) { |
| 1152 | hw->last_memtx_serial = memtx_serial; |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 1153 | spin_lock_irqsave(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1154 | hw->rx_ready++; |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 1155 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1156 | rx = 1; |
| 1157 | } else |
| 1158 | /* Ignore 'Timer Recovery' duplicates. */ |
| 1159 | rx_repeat = 1; |
| 1160 | } else { |
| 1161 | /* |
| 1162 | * If a non-zero serial number is seen, then enable |
| 1163 | * serial number checking. |
| 1164 | */ |
| 1165 | if (memtx_serial != 0) { |
| 1166 | hw->serial_number_detected = 1; |
| 1167 | printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME |
| 1168 | ": memreg_tx serial num detected\n"); |
| 1169 | |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 1170 | spin_lock_irqsave(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1171 | hw->rx_ready++; |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 1172 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1173 | } |
| 1174 | rx = 1; |
| 1175 | } |
| 1176 | } |
| 1177 | if (memrxdone & MEMRX_RX_DONE) { |
| 1178 | writew(0, &hw->memory_info_regs->memreg_rx_done); |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 1179 | spin_lock_irqsave(&hw->lock, flags); |
David Sterba | eb4e545 | 2008-06-06 10:56:35 +0200 | [diff] [blame] | 1180 | hw->tx_ready = 1; |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 1181 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1182 | tx = 1; |
| 1183 | } |
| 1184 | if (tx) |
| 1185 | writew(MEMRX_PCINTACKK, |
| 1186 | &hw->memory_info_regs->memreg_pc_interrupt_ack); |
| 1187 | |
| 1188 | acknowledge_pcmcia_interrupt(hw); |
| 1189 | |
| 1190 | if (tx || rx) |
| 1191 | tasklet_schedule(&hw->tasklet); |
| 1192 | else if (!rx_repeat) { |
| 1193 | if (hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) { |
| 1194 | if (hw->serial_number_detected) |
| 1195 | printk(KERN_WARNING IPWIRELESS_PCCARD_NAME |
| 1196 | ": spurious interrupt - new_tx mode\n"); |
| 1197 | else { |
| 1198 | printk(KERN_WARNING IPWIRELESS_PCCARD_NAME |
David Sterba | 622e713 | 2008-07-28 16:52:55 +0200 | [diff] [blame] | 1199 | ": no valid memreg_tx value - switching to the old memreg_tx\n"); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1200 | hw->memreg_tx = |
| 1201 | &hw->memory_info_regs->memreg_tx_old; |
| 1202 | try_mem_tx_old = 1; |
| 1203 | } |
| 1204 | } else |
| 1205 | printk(KERN_WARNING IPWIRELESS_PCCARD_NAME |
| 1206 | ": spurious interrupt - old_tx mode\n"); |
| 1207 | } |
| 1208 | |
| 1209 | } while (try_mem_tx_old == 1); |
| 1210 | |
| 1211 | return IRQ_HANDLED; |
| 1212 | } |
| 1213 | |
David Sterba | 2fc5577 | 2008-07-28 16:52:49 +0200 | [diff] [blame] | 1214 | irqreturn_t ipwireless_interrupt(int irq, void *dev_id) |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1215 | { |
Dominik Brodowski | 5fa9167 | 2009-11-08 17:24:46 +0100 | [diff] [blame] | 1216 | struct ipw_dev *ipw = dev_id; |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1217 | |
Dominik Brodowski | 5fa9167 | 2009-11-08 17:24:46 +0100 | [diff] [blame] | 1218 | if (ipw->hardware->hw_version == HW_VERSION_1) |
| 1219 | return ipwireless_handle_v1_interrupt(irq, ipw->hardware); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1220 | else |
Dominik Brodowski | 5fa9167 | 2009-11-08 17:24:46 +0100 | [diff] [blame] | 1221 | return ipwireless_handle_v2_v3_interrupt(irq, ipw->hardware); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1222 | } |
| 1223 | |
| 1224 | static void flush_packets_to_hw(struct ipw_hardware *hw) |
| 1225 | { |
| 1226 | int priority_limit; |
| 1227 | unsigned long flags; |
| 1228 | |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 1229 | spin_lock_irqsave(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1230 | priority_limit = get_current_packet_priority(hw); |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 1231 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1232 | |
| 1233 | while (send_pending_packet(hw, priority_limit)); |
| 1234 | } |
| 1235 | |
| 1236 | static void send_packet(struct ipw_hardware *hw, int priority, |
| 1237 | struct ipw_tx_packet *packet) |
| 1238 | { |
| 1239 | unsigned long flags; |
| 1240 | |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 1241 | spin_lock_irqsave(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1242 | list_add_tail(&packet->queue, &hw->tx_queue[priority]); |
David Sterba | eb4e545 | 2008-06-06 10:56:35 +0200 | [diff] [blame] | 1243 | hw->tx_queued++; |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 1244 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1245 | |
| 1246 | flush_packets_to_hw(hw); |
| 1247 | } |
| 1248 | |
| 1249 | /* Create data packet, non-atomic allocation */ |
| 1250 | static void *alloc_data_packet(int data_size, |
| 1251 | unsigned char dest_addr, |
| 1252 | unsigned char protocol) |
| 1253 | { |
| 1254 | struct ipw_tx_packet *packet = kzalloc( |
| 1255 | sizeof(struct ipw_tx_packet) + data_size, |
| 1256 | GFP_ATOMIC); |
| 1257 | |
| 1258 | if (!packet) |
| 1259 | return NULL; |
| 1260 | |
| 1261 | INIT_LIST_HEAD(&packet->queue); |
| 1262 | packet->dest_addr = dest_addr; |
| 1263 | packet->protocol = protocol; |
| 1264 | packet->length = data_size; |
| 1265 | |
| 1266 | return packet; |
| 1267 | } |
| 1268 | |
| 1269 | static void *alloc_ctrl_packet(int header_size, |
| 1270 | unsigned char dest_addr, |
| 1271 | unsigned char protocol, |
| 1272 | unsigned char sig_no) |
| 1273 | { |
| 1274 | /* |
| 1275 | * sig_no is located right after ipw_tx_packet struct in every |
| 1276 | * CTRL or SETUP packets, we can use ipw_control_packet as a |
| 1277 | * common struct |
| 1278 | */ |
| 1279 | struct ipw_control_packet *packet = kzalloc(header_size, GFP_ATOMIC); |
| 1280 | |
| 1281 | if (!packet) |
| 1282 | return NULL; |
| 1283 | |
| 1284 | INIT_LIST_HEAD(&packet->header.queue); |
| 1285 | packet->header.dest_addr = dest_addr; |
| 1286 | packet->header.protocol = protocol; |
| 1287 | packet->header.length = header_size - sizeof(struct ipw_tx_packet); |
| 1288 | packet->body.sig_no = sig_no; |
| 1289 | |
| 1290 | return packet; |
| 1291 | } |
| 1292 | |
| 1293 | int ipwireless_send_packet(struct ipw_hardware *hw, unsigned int channel_idx, |
David Sterba | ff3e990 | 2008-07-28 16:53:11 +0200 | [diff] [blame] | 1294 | const unsigned char *data, unsigned int length, |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1295 | void (*callback) (void *cb, unsigned int length), |
| 1296 | void *callback_data) |
| 1297 | { |
| 1298 | struct ipw_tx_packet *packet; |
| 1299 | |
David Sterba | d4c0deb | 2008-07-28 16:52:33 +0200 | [diff] [blame] | 1300 | packet = alloc_data_packet(length, (channel_idx + 1), |
| 1301 | TL_PROTOCOLID_COM_DATA); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1302 | if (!packet) |
| 1303 | return -ENOMEM; |
| 1304 | packet->packet_callback = callback; |
| 1305 | packet->callback_data = callback_data; |
David Sterba | d4c0deb | 2008-07-28 16:52:33 +0200 | [diff] [blame] | 1306 | memcpy((unsigned char *) packet + sizeof(struct ipw_tx_packet), data, |
| 1307 | length); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1308 | |
| 1309 | send_packet(hw, PRIO_DATA, packet); |
| 1310 | return 0; |
| 1311 | } |
| 1312 | |
| 1313 | static int set_control_line(struct ipw_hardware *hw, int prio, |
| 1314 | unsigned int channel_idx, int line, int state) |
| 1315 | { |
| 1316 | struct ipw_control_packet *packet; |
| 1317 | int protocolid = TL_PROTOCOLID_COM_CTRL; |
| 1318 | |
| 1319 | if (prio == PRIO_SETUP) |
| 1320 | protocolid = TL_PROTOCOLID_SETUP; |
| 1321 | |
| 1322 | packet = alloc_ctrl_packet(sizeof(struct ipw_control_packet), |
David Sterba | d4c0deb | 2008-07-28 16:52:33 +0200 | [diff] [blame] | 1323 | (channel_idx + 1), protocolid, line); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1324 | if (!packet) |
| 1325 | return -ENOMEM; |
| 1326 | packet->header.length = sizeof(struct ipw_control_packet_body); |
David Sterba | d4c0deb | 2008-07-28 16:52:33 +0200 | [diff] [blame] | 1327 | packet->body.value = (state == 0 ? 0 : 1); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1328 | send_packet(hw, prio, &packet->header); |
| 1329 | return 0; |
| 1330 | } |
| 1331 | |
| 1332 | |
| 1333 | static int set_DTR(struct ipw_hardware *hw, int priority, |
| 1334 | unsigned int channel_idx, int state) |
| 1335 | { |
| 1336 | if (state != 0) |
| 1337 | hw->control_lines[channel_idx] |= IPW_CONTROL_LINE_DTR; |
| 1338 | else |
| 1339 | hw->control_lines[channel_idx] &= ~IPW_CONTROL_LINE_DTR; |
| 1340 | |
| 1341 | return set_control_line(hw, priority, channel_idx, COMCTRL_DTR, state); |
| 1342 | } |
| 1343 | |
| 1344 | static int set_RTS(struct ipw_hardware *hw, int priority, |
| 1345 | unsigned int channel_idx, int state) |
| 1346 | { |
| 1347 | if (state != 0) |
| 1348 | hw->control_lines[channel_idx] |= IPW_CONTROL_LINE_RTS; |
| 1349 | else |
| 1350 | hw->control_lines[channel_idx] &= ~IPW_CONTROL_LINE_RTS; |
| 1351 | |
| 1352 | return set_control_line(hw, priority, channel_idx, COMCTRL_RTS, state); |
| 1353 | } |
| 1354 | |
| 1355 | int ipwireless_set_DTR(struct ipw_hardware *hw, unsigned int channel_idx, |
| 1356 | int state) |
| 1357 | { |
| 1358 | return set_DTR(hw, PRIO_CTRL, channel_idx, state); |
| 1359 | } |
| 1360 | |
| 1361 | int ipwireless_set_RTS(struct ipw_hardware *hw, unsigned int channel_idx, |
| 1362 | int state) |
| 1363 | { |
| 1364 | return set_RTS(hw, PRIO_CTRL, channel_idx, state); |
| 1365 | } |
| 1366 | |
| 1367 | struct ipw_setup_get_version_query_packet { |
| 1368 | struct ipw_tx_packet header; |
| 1369 | struct tl_setup_get_version_qry body; |
| 1370 | }; |
| 1371 | |
| 1372 | struct ipw_setup_config_packet { |
| 1373 | struct ipw_tx_packet header; |
| 1374 | struct tl_setup_config_msg body; |
| 1375 | }; |
| 1376 | |
| 1377 | struct ipw_setup_config_done_packet { |
| 1378 | struct ipw_tx_packet header; |
| 1379 | struct tl_setup_config_done_msg body; |
| 1380 | }; |
| 1381 | |
| 1382 | struct ipw_setup_open_packet { |
| 1383 | struct ipw_tx_packet header; |
| 1384 | struct tl_setup_open_msg body; |
| 1385 | }; |
| 1386 | |
| 1387 | struct ipw_setup_info_packet { |
| 1388 | struct ipw_tx_packet header; |
| 1389 | struct tl_setup_info_msg body; |
| 1390 | }; |
| 1391 | |
| 1392 | struct ipw_setup_reboot_msg_ack { |
| 1393 | struct ipw_tx_packet header; |
| 1394 | struct TlSetupRebootMsgAck body; |
| 1395 | }; |
| 1396 | |
| 1397 | /* This handles the actual initialization of the card */ |
| 1398 | static void __handle_setup_get_version_rsp(struct ipw_hardware *hw) |
| 1399 | { |
| 1400 | struct ipw_setup_config_packet *config_packet; |
| 1401 | struct ipw_setup_config_done_packet *config_done_packet; |
| 1402 | struct ipw_setup_open_packet *open_packet; |
| 1403 | struct ipw_setup_info_packet *info_packet; |
| 1404 | int port; |
| 1405 | unsigned int channel_idx; |
| 1406 | |
| 1407 | /* generate config packet */ |
| 1408 | for (port = 1; port <= NL_NUM_OF_ADDRESSES; port++) { |
| 1409 | config_packet = alloc_ctrl_packet( |
| 1410 | sizeof(struct ipw_setup_config_packet), |
| 1411 | ADDR_SETUP_PROT, |
| 1412 | TL_PROTOCOLID_SETUP, |
| 1413 | TL_SETUP_SIGNO_CONFIG_MSG); |
| 1414 | if (!config_packet) |
| 1415 | goto exit_nomem; |
| 1416 | config_packet->header.length = sizeof(struct tl_setup_config_msg); |
| 1417 | config_packet->body.port_no = port; |
| 1418 | config_packet->body.prio_data = PRIO_DATA; |
| 1419 | config_packet->body.prio_ctrl = PRIO_CTRL; |
| 1420 | send_packet(hw, PRIO_SETUP, &config_packet->header); |
| 1421 | } |
| 1422 | config_done_packet = alloc_ctrl_packet( |
| 1423 | sizeof(struct ipw_setup_config_done_packet), |
| 1424 | ADDR_SETUP_PROT, |
| 1425 | TL_PROTOCOLID_SETUP, |
| 1426 | TL_SETUP_SIGNO_CONFIG_DONE_MSG); |
| 1427 | if (!config_done_packet) |
| 1428 | goto exit_nomem; |
| 1429 | config_done_packet->header.length = sizeof(struct tl_setup_config_done_msg); |
| 1430 | send_packet(hw, PRIO_SETUP, &config_done_packet->header); |
| 1431 | |
| 1432 | /* generate open packet */ |
| 1433 | for (port = 1; port <= NL_NUM_OF_ADDRESSES; port++) { |
| 1434 | open_packet = alloc_ctrl_packet( |
| 1435 | sizeof(struct ipw_setup_open_packet), |
| 1436 | ADDR_SETUP_PROT, |
| 1437 | TL_PROTOCOLID_SETUP, |
| 1438 | TL_SETUP_SIGNO_OPEN_MSG); |
| 1439 | if (!open_packet) |
| 1440 | goto exit_nomem; |
| 1441 | open_packet->header.length = sizeof(struct tl_setup_open_msg); |
| 1442 | open_packet->body.port_no = port; |
| 1443 | send_packet(hw, PRIO_SETUP, &open_packet->header); |
| 1444 | } |
| 1445 | for (channel_idx = 0; |
| 1446 | channel_idx < NL_NUM_OF_ADDRESSES; channel_idx++) { |
| 1447 | int ret; |
| 1448 | |
| 1449 | ret = set_DTR(hw, PRIO_SETUP, channel_idx, |
| 1450 | (hw->control_lines[channel_idx] & |
| 1451 | IPW_CONTROL_LINE_DTR) != 0); |
| 1452 | if (ret) { |
| 1453 | printk(KERN_ERR IPWIRELESS_PCCARD_NAME |
| 1454 | ": error setting DTR (%d)\n", ret); |
| 1455 | return; |
| 1456 | } |
| 1457 | |
| 1458 | set_RTS(hw, PRIO_SETUP, channel_idx, |
| 1459 | (hw->control_lines [channel_idx] & |
| 1460 | IPW_CONTROL_LINE_RTS) != 0); |
| 1461 | if (ret) { |
| 1462 | printk(KERN_ERR IPWIRELESS_PCCARD_NAME |
| 1463 | ": error setting RTS (%d)\n", ret); |
| 1464 | return; |
| 1465 | } |
| 1466 | } |
| 1467 | /* |
| 1468 | * For NDIS we assume that we are using sync PPP frames, for COM async. |
| 1469 | * This driver uses NDIS mode too. We don't bother with translation |
| 1470 | * from async -> sync PPP. |
| 1471 | */ |
| 1472 | info_packet = alloc_ctrl_packet(sizeof(struct ipw_setup_info_packet), |
| 1473 | ADDR_SETUP_PROT, |
| 1474 | TL_PROTOCOLID_SETUP, |
| 1475 | TL_SETUP_SIGNO_INFO_MSG); |
| 1476 | if (!info_packet) |
| 1477 | goto exit_nomem; |
| 1478 | info_packet->header.length = sizeof(struct tl_setup_info_msg); |
| 1479 | info_packet->body.driver_type = NDISWAN_DRIVER; |
| 1480 | info_packet->body.major_version = NDISWAN_DRIVER_MAJOR_VERSION; |
| 1481 | info_packet->body.minor_version = NDISWAN_DRIVER_MINOR_VERSION; |
| 1482 | send_packet(hw, PRIO_SETUP, &info_packet->header); |
| 1483 | |
| 1484 | /* Initialization is now complete, so we clear the 'to_setup' flag */ |
| 1485 | hw->to_setup = 0; |
| 1486 | |
| 1487 | return; |
| 1488 | |
| 1489 | exit_nomem: |
| 1490 | printk(KERN_ERR IPWIRELESS_PCCARD_NAME |
| 1491 | ": not enough memory to alloc control packet\n"); |
| 1492 | hw->to_setup = -1; |
| 1493 | } |
| 1494 | |
| 1495 | static void handle_setup_get_version_rsp(struct ipw_hardware *hw, |
| 1496 | unsigned char vers_no) |
| 1497 | { |
| 1498 | del_timer(&hw->setup_timer); |
| 1499 | hw->initializing = 0; |
| 1500 | printk(KERN_INFO IPWIRELESS_PCCARD_NAME ": card is ready.\n"); |
| 1501 | |
| 1502 | if (vers_no == TL_SETUP_VERSION) |
| 1503 | __handle_setup_get_version_rsp(hw); |
| 1504 | else |
David Sterba | 622e713 | 2008-07-28 16:52:55 +0200 | [diff] [blame] | 1505 | printk(KERN_ERR IPWIRELESS_PCCARD_NAME |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1506 | ": invalid hardware version no %u\n", |
| 1507 | (unsigned int) vers_no); |
| 1508 | } |
| 1509 | |
| 1510 | static void ipw_send_setup_packet(struct ipw_hardware *hw) |
| 1511 | { |
| 1512 | struct ipw_setup_get_version_query_packet *ver_packet; |
| 1513 | |
| 1514 | ver_packet = alloc_ctrl_packet( |
| 1515 | sizeof(struct ipw_setup_get_version_query_packet), |
| 1516 | ADDR_SETUP_PROT, TL_PROTOCOLID_SETUP, |
| 1517 | TL_SETUP_SIGNO_GET_VERSION_QRY); |
| 1518 | ver_packet->header.length = sizeof(struct tl_setup_get_version_qry); |
| 1519 | |
| 1520 | /* |
| 1521 | * Response is handled in handle_received_SETUP_packet |
| 1522 | */ |
| 1523 | send_packet(hw, PRIO_SETUP, &ver_packet->header); |
| 1524 | } |
| 1525 | |
| 1526 | static void handle_received_SETUP_packet(struct ipw_hardware *hw, |
| 1527 | unsigned int address, |
David Sterba | ff3e990 | 2008-07-28 16:53:11 +0200 | [diff] [blame] | 1528 | const unsigned char *data, int len, |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1529 | int is_last) |
| 1530 | { |
David Sterba | ff3e990 | 2008-07-28 16:53:11 +0200 | [diff] [blame] | 1531 | const union ipw_setup_rx_msg *rx_msg = (const union ipw_setup_rx_msg *) data; |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1532 | |
| 1533 | if (address != ADDR_SETUP_PROT) { |
| 1534 | printk(KERN_INFO IPWIRELESS_PCCARD_NAME |
| 1535 | ": setup packet has bad address %d\n", address); |
| 1536 | return; |
| 1537 | } |
| 1538 | |
| 1539 | switch (rx_msg->sig_no) { |
| 1540 | case TL_SETUP_SIGNO_GET_VERSION_RSP: |
| 1541 | if (hw->to_setup) |
| 1542 | handle_setup_get_version_rsp(hw, |
| 1543 | rx_msg->version_rsp_msg.version); |
| 1544 | break; |
| 1545 | |
| 1546 | case TL_SETUP_SIGNO_OPEN_MSG: |
| 1547 | if (ipwireless_debug) { |
| 1548 | unsigned int channel_idx = rx_msg->open_msg.port_no - 1; |
| 1549 | |
| 1550 | printk(KERN_INFO IPWIRELESS_PCCARD_NAME |
| 1551 | ": OPEN_MSG [channel %u] reply received\n", |
| 1552 | channel_idx); |
| 1553 | } |
| 1554 | break; |
| 1555 | |
| 1556 | case TL_SETUP_SIGNO_INFO_MSG_ACK: |
| 1557 | if (ipwireless_debug) |
| 1558 | printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME |
| 1559 | ": card successfully configured as NDISWAN\n"); |
| 1560 | break; |
| 1561 | |
| 1562 | case TL_SETUP_SIGNO_REBOOT_MSG: |
| 1563 | if (hw->to_setup) |
| 1564 | printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME |
| 1565 | ": Setup not completed - ignoring reboot msg\n"); |
| 1566 | else { |
| 1567 | struct ipw_setup_reboot_msg_ack *packet; |
| 1568 | |
| 1569 | printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME |
| 1570 | ": Acknowledging REBOOT message\n"); |
| 1571 | packet = alloc_ctrl_packet( |
| 1572 | sizeof(struct ipw_setup_reboot_msg_ack), |
| 1573 | ADDR_SETUP_PROT, TL_PROTOCOLID_SETUP, |
| 1574 | TL_SETUP_SIGNO_REBOOT_MSG_ACK); |
| 1575 | packet->header.length = |
| 1576 | sizeof(struct TlSetupRebootMsgAck); |
| 1577 | send_packet(hw, PRIO_SETUP, &packet->header); |
| 1578 | if (hw->reboot_callback) |
| 1579 | hw->reboot_callback(hw->reboot_callback_data); |
| 1580 | } |
| 1581 | break; |
| 1582 | |
| 1583 | default: |
| 1584 | printk(KERN_INFO IPWIRELESS_PCCARD_NAME |
| 1585 | ": unknown setup message %u received\n", |
| 1586 | (unsigned int) rx_msg->sig_no); |
| 1587 | } |
| 1588 | } |
| 1589 | |
| 1590 | static void do_close_hardware(struct ipw_hardware *hw) |
| 1591 | { |
| 1592 | unsigned int irqn; |
| 1593 | |
| 1594 | if (hw->hw_version == HW_VERSION_1) { |
| 1595 | /* Disable TX and RX interrupts. */ |
| 1596 | outw(0, hw->base_port + IOIER); |
| 1597 | |
| 1598 | /* Acknowledge any outstanding interrupt requests */ |
| 1599 | irqn = inw(hw->base_port + IOIR); |
| 1600 | if (irqn & IR_TXINTR) |
| 1601 | outw(IR_TXINTR, hw->base_port + IOIR); |
| 1602 | if (irqn & IR_RXINTR) |
| 1603 | outw(IR_RXINTR, hw->base_port + IOIR); |
| 1604 | |
| 1605 | synchronize_irq(hw->irq); |
| 1606 | } |
| 1607 | } |
| 1608 | |
| 1609 | struct ipw_hardware *ipwireless_hardware_create(void) |
| 1610 | { |
| 1611 | int i; |
| 1612 | struct ipw_hardware *hw = |
| 1613 | kzalloc(sizeof(struct ipw_hardware), GFP_KERNEL); |
| 1614 | |
| 1615 | if (!hw) |
| 1616 | return NULL; |
| 1617 | |
| 1618 | hw->irq = -1; |
| 1619 | hw->initializing = 1; |
| 1620 | hw->tx_ready = 1; |
| 1621 | hw->rx_bytes_queued = 0; |
| 1622 | hw->rx_pool_size = 0; |
| 1623 | hw->last_memtx_serial = (unsigned short) 0xffff; |
| 1624 | for (i = 0; i < NL_NUM_OF_PRIORITIES; i++) |
| 1625 | INIT_LIST_HEAD(&hw->tx_queue[i]); |
| 1626 | |
| 1627 | INIT_LIST_HEAD(&hw->rx_queue); |
| 1628 | INIT_LIST_HEAD(&hw->rx_pool); |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 1629 | spin_lock_init(&hw->lock); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1630 | tasklet_init(&hw->tasklet, ipwireless_do_tasklet, (unsigned long) hw); |
| 1631 | INIT_WORK(&hw->work_rx, ipw_receive_data_work); |
| 1632 | setup_timer(&hw->setup_timer, ipwireless_setup_timer, |
| 1633 | (unsigned long) hw); |
| 1634 | |
| 1635 | return hw; |
| 1636 | } |
| 1637 | |
| 1638 | void ipwireless_init_hardware_v1(struct ipw_hardware *hw, |
| 1639 | unsigned int base_port, |
| 1640 | void __iomem *attr_memory, |
| 1641 | void __iomem *common_memory, |
| 1642 | int is_v2_card, |
| 1643 | void (*reboot_callback) (void *data), |
| 1644 | void *reboot_callback_data) |
| 1645 | { |
| 1646 | if (hw->removed) { |
| 1647 | hw->removed = 0; |
| 1648 | enable_irq(hw->irq); |
| 1649 | } |
| 1650 | hw->base_port = base_port; |
David Sterba | d4c0deb | 2008-07-28 16:52:33 +0200 | [diff] [blame] | 1651 | hw->hw_version = (is_v2_card ? HW_VERSION_2 : HW_VERSION_1); |
| 1652 | hw->ll_mtu = (hw->hw_version == HW_VERSION_1 ? LL_MTU_V1 : LL_MTU_V2); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1653 | hw->memregs_CCR = (struct MEMCCR __iomem *) |
| 1654 | ((unsigned short __iomem *) attr_memory + 0x200); |
| 1655 | hw->memory_info_regs = (struct MEMINFREG __iomem *) common_memory; |
| 1656 | hw->memreg_tx = &hw->memory_info_regs->memreg_tx_new; |
| 1657 | hw->reboot_callback = reboot_callback; |
| 1658 | hw->reboot_callback_data = reboot_callback_data; |
| 1659 | } |
| 1660 | |
| 1661 | void ipwireless_init_hardware_v2_v3(struct ipw_hardware *hw) |
| 1662 | { |
| 1663 | hw->initializing = 1; |
| 1664 | hw->init_loops = 0; |
| 1665 | printk(KERN_INFO IPWIRELESS_PCCARD_NAME |
| 1666 | ": waiting for card to start up...\n"); |
| 1667 | ipwireless_setup_timer((unsigned long) hw); |
| 1668 | } |
| 1669 | |
| 1670 | static void ipwireless_setup_timer(unsigned long data) |
| 1671 | { |
| 1672 | struct ipw_hardware *hw = (struct ipw_hardware *) data; |
| 1673 | |
| 1674 | hw->init_loops++; |
| 1675 | |
| 1676 | if (hw->init_loops == TL_SETUP_MAX_VERSION_QRY && |
| 1677 | hw->hw_version == HW_VERSION_2 && |
| 1678 | hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) { |
| 1679 | printk(KERN_INFO IPWIRELESS_PCCARD_NAME |
| 1680 | ": failed to startup using TX2, trying TX\n"); |
| 1681 | |
| 1682 | hw->memreg_tx = &hw->memory_info_regs->memreg_tx_old; |
| 1683 | hw->init_loops = 0; |
| 1684 | } |
| 1685 | /* Give up after a certain number of retries */ |
| 1686 | if (hw->init_loops == TL_SETUP_MAX_VERSION_QRY) { |
| 1687 | printk(KERN_INFO IPWIRELESS_PCCARD_NAME |
| 1688 | ": card failed to start up!\n"); |
| 1689 | hw->initializing = 0; |
| 1690 | } else { |
| 1691 | /* Do not attempt to write to the board if it is not present. */ |
| 1692 | if (is_card_present(hw)) { |
| 1693 | unsigned long flags; |
| 1694 | |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 1695 | spin_lock_irqsave(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1696 | hw->to_setup = 1; |
| 1697 | hw->tx_ready = 1; |
David Sterba | 63c4dbd | 2008-07-28 16:52:44 +0200 | [diff] [blame] | 1698 | spin_unlock_irqrestore(&hw->lock, flags); |
David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame] | 1699 | tasklet_schedule(&hw->tasklet); |
| 1700 | } |
| 1701 | |
| 1702 | mod_timer(&hw->setup_timer, |
| 1703 | jiffies + msecs_to_jiffies(TL_SETUP_VERSION_QRY_TMO)); |
| 1704 | } |
| 1705 | } |
| 1706 | |
| 1707 | /* |
| 1708 | * Stop any interrupts from executing so that, once this function returns, |
| 1709 | * other layers of the driver can be sure they won't get any more callbacks. |
| 1710 | * Thus must be called on a proper process context. |
| 1711 | */ |
| 1712 | void ipwireless_stop_interrupts(struct ipw_hardware *hw) |
| 1713 | { |
| 1714 | if (!hw->shutting_down) { |
| 1715 | /* Tell everyone we are going down. */ |
| 1716 | hw->shutting_down = 1; |
| 1717 | del_timer(&hw->setup_timer); |
| 1718 | |
| 1719 | /* Prevent the hardware from sending any more interrupts */ |
| 1720 | do_close_hardware(hw); |
| 1721 | } |
| 1722 | } |
| 1723 | |
| 1724 | void ipwireless_hardware_free(struct ipw_hardware *hw) |
| 1725 | { |
| 1726 | int i; |
| 1727 | struct ipw_rx_packet *rp, *rq; |
| 1728 | struct ipw_tx_packet *tp, *tq; |
| 1729 | |
| 1730 | ipwireless_stop_interrupts(hw); |
| 1731 | |
| 1732 | flush_scheduled_work(); |
| 1733 | |
| 1734 | for (i = 0; i < NL_NUM_OF_ADDRESSES; i++) |
| 1735 | if (hw->packet_assembler[i] != NULL) |
| 1736 | kfree(hw->packet_assembler[i]); |
| 1737 | |
| 1738 | for (i = 0; i < NL_NUM_OF_PRIORITIES; i++) |
| 1739 | list_for_each_entry_safe(tp, tq, &hw->tx_queue[i], queue) { |
| 1740 | list_del(&tp->queue); |
| 1741 | kfree(tp); |
| 1742 | } |
| 1743 | |
| 1744 | list_for_each_entry_safe(rp, rq, &hw->rx_queue, queue) { |
| 1745 | list_del(&rp->queue); |
| 1746 | kfree(rp); |
| 1747 | } |
| 1748 | |
| 1749 | list_for_each_entry_safe(rp, rq, &hw->rx_pool, queue) { |
| 1750 | list_del(&rp->queue); |
| 1751 | kfree(rp); |
| 1752 | } |
| 1753 | kfree(hw); |
| 1754 | } |
| 1755 | |
| 1756 | /* |
| 1757 | * Associate the specified network with this hardware, so it will receive events |
| 1758 | * from it. |
| 1759 | */ |
| 1760 | void ipwireless_associate_network(struct ipw_hardware *hw, |
| 1761 | struct ipw_network *network) |
| 1762 | { |
| 1763 | hw->network = network; |
| 1764 | } |