defxx.c 113.8 KB
Newer Older
L
Linus Torvalds 已提交
1 2 3 4 5 6 7 8 9 10 11 12
/*
 * File Name:
 *   defxx.c
 *
 * Copyright Information:
 *   Copyright Digital Equipment Corporation 1996.
 *
 *   This software may be used and distributed according to the terms of
 *   the GNU General Public License, incorporated herein by reference.
 *
 * Abstract:
 *   A Linux device driver supporting the Digital Equipment Corporation
13 14
 *   FDDI TURBOchannel, EISA and PCI controller families.  Supported
 *   adapters include:
L
Linus Torvalds 已提交
15
 *
16 17 18
 *		DEC FDDIcontroller/TURBOchannel (DEFTA)
 *		DEC FDDIcontroller/EISA         (DEFEA)
 *		DEC FDDIcontroller/PCI          (DEFPA)
L
Linus Torvalds 已提交
19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195
 *
 * The original author:
 *   LVS	Lawrence V. Stefani <lstefani@yahoo.com>
 *
 * Maintainers:
 *   macro	Maciej W. Rozycki <macro@linux-mips.org>
 *
 * Credits:
 *   I'd like to thank Patricia Cross for helping me get started with
 *   Linux, David Davies for a lot of help upgrading and configuring
 *   my development system and for answering many OS and driver
 *   development questions, and Alan Cox for recommendations and
 *   integration help on getting FDDI support into Linux.  LVS
 *
 * Driver Architecture:
 *   The driver architecture is largely based on previous driver work
 *   for other operating systems.  The upper edge interface and
 *   functions were largely taken from existing Linux device drivers
 *   such as David Davies' DE4X5.C driver and Donald Becker's TULIP.C
 *   driver.
 *
 *   Adapter Probe -
 *		The driver scans for supported EISA adapters by reading the
 *		SLOT ID register for each EISA slot and making a match
 *		against the expected value.
 *
 *   Bus-Specific Initialization -
 *		This driver currently supports both EISA and PCI controller
 *		families.  While the custom DMA chip and FDDI logic is similar
 *		or identical, the bus logic is very different.  After
 *		initialization, the	only bus-specific differences is in how the
 *		driver enables and disables interrupts.  Other than that, the
 *		run-time critical code behaves the same on both families.
 *		It's important to note that both adapter families are configured
 *		to I/O map, rather than memory map, the adapter registers.
 *
 *   Driver Open/Close -
 *		In the driver open routine, the driver ISR (interrupt service
 *		routine) is registered and the adapter is brought to an
 *		operational state.  In the driver close routine, the opposite
 *		occurs; the driver ISR is deregistered and the adapter is
 *		brought to a safe, but closed state.  Users may use consecutive
 *		commands to bring the adapter up and down as in the following
 *		example:
 *					ifconfig fddi0 up
 *					ifconfig fddi0 down
 *					ifconfig fddi0 up
 *
 *   Driver Shutdown -
 *		Apparently, there is no shutdown or halt routine support under
 *		Linux.  This routine would be called during "reboot" or
 *		"shutdown" to allow the driver to place the adapter in a safe
 *		state before a warm reboot occurs.  To be really safe, the user
 *		should close the adapter before shutdown (eg. ifconfig fddi0 down)
 *		to ensure that the adapter DMA engine is taken off-line.  However,
 *		the current driver code anticipates this problem and always issues
 *		a soft reset of the adapter	at the beginning of driver initialization.
 *		A future driver enhancement in this area may occur in 2.1.X where
 *		Alan indicated that a shutdown handler may be implemented.
 *
 *   Interrupt Service Routine -
 *		The driver supports shared interrupts, so the ISR is registered for
 *		each board with the appropriate flag and the pointer to that board's
 *		device structure.  This provides the context during interrupt
 *		processing to support shared interrupts and multiple boards.
 *
 *		Interrupt enabling/disabling can occur at many levels.  At the host
 *		end, you can disable system interrupts, or disable interrupts at the
 *		PIC (on Intel systems).  Across the bus, both EISA and PCI adapters
 *		have a bus-logic chip interrupt enable/disable as well as a DMA
 *		controller interrupt enable/disable.
 *
 *		The driver currently enables and disables adapter interrupts at the
 *		bus-logic chip and assumes that Linux will take care of clearing or
 *		acknowledging any host-based interrupt chips.
 *
 *   Control Functions -
 *		Control functions are those used to support functions such as adding
 *		or deleting multicast addresses, enabling or disabling packet
 *		reception filters, or other custom/proprietary commands.  Presently,
 *		the driver supports the "get statistics", "set multicast list", and
 *		"set mac address" functions defined by Linux.  A list of possible
 *		enhancements include:
 *
 *				- Custom ioctl interface for executing port interface commands
 *				- Custom ioctl interface for adding unicast addresses to
 *				  adapter CAM (to support bridge functions).
 *				- Custom ioctl interface for supporting firmware upgrades.
 *
 *   Hardware (port interface) Support Routines -
 *		The driver function names that start with "dfx_hw_" represent
 *		low-level port interface routines that are called frequently.  They
 *		include issuing a DMA or port control command to the adapter,
 *		resetting the adapter, or reading the adapter state.  Since the
 *		driver initialization and run-time code must make calls into the
 *		port interface, these routines were written to be as generic and
 *		usable as possible.
 *
 *   Receive Path -
 *		The adapter DMA engine supports a 256 entry receive descriptor block
 *		of which up to 255 entries can be used at any given time.  The
 *		architecture is a standard producer, consumer, completion model in
 *		which the driver "produces" receive buffers to the adapter, the
 *		adapter "consumes" the receive buffers by DMAing incoming packet data,
 *		and the driver "completes" the receive buffers by servicing the
 *		incoming packet, then "produces" a new buffer and starts the cycle
 *		again.  Receive buffers can be fragmented in up to 16 fragments
 *		(descriptor	entries).  For simplicity, this driver posts
 *		single-fragment receive buffers of 4608 bytes, then allocates a
 *		sk_buff, copies the data, then reposts the buffer.  To reduce CPU
 *		utilization, a better approach would be to pass up the receive
 *		buffer (no extra copy) then allocate and post a replacement buffer.
 *		This is a performance enhancement that should be looked into at
 *		some point.
 *
 *   Transmit Path -
 *		Like the receive path, the adapter DMA engine supports a 256 entry
 *		transmit descriptor block of which up to 255 entries can be used at
 *		any	given time.  Transmit buffers can be fragmented	in up to 255
 *		fragments (descriptor entries).  This driver always posts one
 *		fragment per transmit packet request.
 *
 *		The fragment contains the entire packet from FC to end of data.
 *		Before posting the buffer to the adapter, the driver sets a three-byte
 *		packet request header (PRH) which is required by the Motorola MAC chip
 *		used on the adapters.  The PRH tells the MAC the type of token to
 *		receive/send, whether or not to generate and append the CRC, whether
 *		synchronous or asynchronous framing is used, etc.  Since the PRH
 *		definition is not necessarily consistent across all FDDI chipsets,
 *		the driver, rather than the common FDDI packet handler routines,
 *		sets these bytes.
 *
 *		To reduce the amount of descriptor fetches needed per transmit request,
 *		the driver takes advantage of the fact that there are at least three
 *		bytes available before the skb->data field on the outgoing transmit
 *		request.  This is guaranteed by having fddi_setup() in net_init.c set
 *		dev->hard_header_len to 24 bytes.  21 bytes accounts for the largest
 *		header in an 802.2 SNAP frame.  The other 3 bytes are the extra "pad"
 *		bytes which we'll use to store the PRH.
 *
 *		There's a subtle advantage to adding these pad bytes to the
 *		hard_header_len, it ensures that the data portion of the packet for
 *		an 802.2 SNAP frame is longword aligned.  Other FDDI driver
 *		implementations may not need the extra padding and can start copying
 *		or DMAing directly from the FC byte which starts at skb->data.  Should
 *		another driver implementation need ADDITIONAL padding, the net_init.c
 *		module should be updated and dev->hard_header_len should be increased.
 *		NOTE: To maintain the alignment on the data portion of the packet,
 *		dev->hard_header_len should always be evenly divisible by 4 and at
 *		least 24 bytes in size.
 *
 * Modification History:
 *		Date		Name	Description
 *		16-Aug-96	LVS		Created.
 *		20-Aug-96	LVS		Updated dfx_probe so that version information
 *							string is only displayed if 1 or more cards are
 *							found.  Changed dfx_rcv_queue_process to copy
 *							3 NULL bytes before FC to ensure that data is
 *							longword aligned in receive buffer.
 *		09-Sep-96	LVS		Updated dfx_ctl_set_multicast_list to enable
 *							LLC group promiscuous mode if multicast list
 *							is too large.  LLC individual/group promiscuous
 *							mode is now disabled if IFF_PROMISC flag not set.
 *							dfx_xmt_queue_pkt no longer checks for NULL skb
 *							on Alan Cox recommendation.  Added node address
 *							override support.
 *		12-Sep-96	LVS		Reset current address to factory address during
 *							device open.  Updated transmit path to post a
 *							single fragment which includes PRH->end of data.
 *		Mar 2000	AC		Did various cleanups for 2.3.x
 *		Jun 2000	jgarzik		PCI and resource alloc cleanups
 *		Jul 2000	tjeerd		Much cleanup and some bug fixes
 *		Sep 2000	tjeerd		Fix leak on unload, cosmetic code cleanup
 *		Feb 2001			Skb allocation fixes
 *		Feb 2001	davej		PCI enable cleanups.
 *		04 Aug 2003	macro		Converted to the DMA API.
 *		14 Aug 2004	macro		Fix device names reported.
196
 *		14 Jun 2005	macro		Use irqreturn_t.
197
 *		23 Oct 2006	macro		Big-endian host support.
198
 *		14 Dec 2006	macro		TURBOchannel support.
L
Linus Torvalds 已提交
199 200 201
 */

/* Include files */
202
#include <linux/bitops.h>
L
Linus Torvalds 已提交
203
#include <linux/delay.h>
204 205 206 207
#include <linux/dma-mapping.h>
#include <linux/eisa.h>
#include <linux/errno.h>
#include <linux/fddidevice.h>
L
Linus Torvalds 已提交
208
#include <linux/init.h>
209 210 211 212
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/kernel.h>
#include <linux/module.h>
L
Linus Torvalds 已提交
213
#include <linux/netdevice.h>
214
#include <linux/pci.h>
L
Linus Torvalds 已提交
215
#include <linux/skbuff.h>
216 217 218
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/tc.h>
L
Linus Torvalds 已提交
219 220 221 222 223 224 225 226

#include <asm/byteorder.h>
#include <asm/io.h>

#include "defxx.h"

/* Version information string should be updated prior to each new release!  */
#define DRV_NAME "defxx"
227 228
#define DRV_VERSION "v1.10"
#define DRV_RELDATE "2006/12/14"
L
Linus Torvalds 已提交
229 230 231 232 233 234 235 236 237 238 239 240 241 242

static char version[] __devinitdata =
	DRV_NAME ": " DRV_VERSION " " DRV_RELDATE
	"  Lawrence V. Stefani and others\n";

#define DYNAMIC_BUFFERS 1

#define SKBUFF_RX_COPYBREAK 200
/*
 * NEW_SKB_SIZE = PI_RCV_DATA_K_SIZE_MAX+128 to allow 128 byte
 * alignment for compatibility with old EISA boards.
 */
#define NEW_SKB_SIZE (PI_RCV_DATA_K_SIZE_MAX+128)

243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268
#define __unused __attribute__ ((unused))

#ifdef CONFIG_PCI
#define DFX_BUS_PCI(dev) (dev->bus == &pci_bus_type)
#else
#define DFX_BUS_PCI(dev) 0
#endif

#ifdef CONFIG_EISA
#define DFX_BUS_EISA(dev) (dev->bus == &eisa_bus_type)
#else
#define DFX_BUS_EISA(dev) 0
#endif

#ifdef CONFIG_TC
#define DFX_BUS_TC(dev) (dev->bus == &tc_bus_type)
#else
#define DFX_BUS_TC(dev) 0
#endif

#ifdef CONFIG_DEFXX_MMIO
#define DFX_MMIO 1
#else
#define DFX_MMIO 0
#endif

L
Linus Torvalds 已提交
269 270 271
/* Define module-wide (static) routines */

static void		dfx_bus_init(struct net_device *dev);
272
static void		dfx_bus_uninit(struct net_device *dev);
L
Linus Torvalds 已提交
273 274
static void		dfx_bus_config_check(DFX_board_t *bp);

275 276 277
static int		dfx_driver_init(struct net_device *dev,
					const char *print_name,
					resource_size_t bar_start);
L
Linus Torvalds 已提交
278 279 280 281 282 283 284 285
static int		dfx_adap_init(DFX_board_t *bp, int get_buffers);

static int		dfx_open(struct net_device *dev);
static int		dfx_close(struct net_device *dev);

static void		dfx_int_pr_halt_id(DFX_board_t *bp);
static void		dfx_int_type_0_process(DFX_board_t *bp);
static void		dfx_int_common(struct net_device *dev);
286
static irqreturn_t	dfx_interrupt(int irq, void *dev_id);
L
Linus Torvalds 已提交
287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309

static struct		net_device_stats *dfx_ctl_get_stats(struct net_device *dev);
static void		dfx_ctl_set_multicast_list(struct net_device *dev);
static int		dfx_ctl_set_mac_address(struct net_device *dev, void *addr);
static int		dfx_ctl_update_cam(DFX_board_t *bp);
static int		dfx_ctl_update_filters(DFX_board_t *bp);

static int		dfx_hw_dma_cmd_req(DFX_board_t *bp);
static int		dfx_hw_port_ctrl_req(DFX_board_t *bp, PI_UINT32	command, PI_UINT32 data_a, PI_UINT32 data_b, PI_UINT32 *host_data);
static void		dfx_hw_adap_reset(DFX_board_t *bp, PI_UINT32 type);
static int		dfx_hw_adap_state_rd(DFX_board_t *bp);
static int		dfx_hw_dma_uninit(DFX_board_t *bp, PI_UINT32 type);

static int		dfx_rcv_init(DFX_board_t *bp, int get_buffers);
static void		dfx_rcv_queue_process(DFX_board_t *bp);
static void		dfx_rcv_flush(DFX_board_t *bp);

static int		dfx_xmt_queue_pkt(struct sk_buff *skb, struct net_device *dev);
static int		dfx_xmt_done(DFX_board_t *bp);
static void		dfx_xmt_flush(DFX_board_t *bp);

/* Define module-wide (static) variables */

310 311 312
static struct pci_driver dfx_pci_driver;
static struct eisa_driver dfx_eisa_driver;
static struct tc_driver dfx_tc_driver;
L
Linus Torvalds 已提交
313

314

L
Linus Torvalds 已提交
315 316 317 318 319
/*
 * =======================
 * = dfx_port_write_long =
 * = dfx_port_read_long  =
 * =======================
320
 *
L
Linus Torvalds 已提交
321 322
 * Overview:
 *   Routines for reading and writing values from/to adapter
323
 *
L
Linus Torvalds 已提交
324 325
 * Returns:
 *   None
326
 *
L
Linus Torvalds 已提交
327
 * Arguments:
328 329 330 331 332
 *   bp		- pointer to board information
 *   offset	- register offset from base I/O address
 *   data	- for dfx_port_write_long, this is a value to write;
 *		  for dfx_port_read_long, this is a pointer to store
 *		  the read value
L
Linus Torvalds 已提交
333 334 335 336
 *
 * Functional Description:
 *   These routines perform the correct operation to read or write
 *   the adapter register.
337
 *
L
Linus Torvalds 已提交
338 339 340 341 342 343 344 345
 *   EISA port block base addresses are based on the slot number in which the
 *   controller is installed.  For example, if the EISA controller is installed
 *   in slot 4, the port block base address is 0x4000.  If the controller is
 *   installed in slot 2, the port block base address is 0x2000, and so on.
 *   This port block can be used to access PDQ, ESIC, and DEFEA on-board
 *   registers using the register offsets defined in DEFXX.H.
 *
 *   PCI port block base addresses are assigned by the PCI BIOS or system
346
 *   firmware.  There is one 128 byte port block which can be accessed.  It
L
Linus Torvalds 已提交
347 348 349 350 351 352 353
 *   allows for I/O mapping of both PDQ and PFI registers using the register
 *   offsets defined in DEFXX.H.
 *
 * Return Codes:
 *   None
 *
 * Assumptions:
354
 *   bp->base is a valid base I/O address for this adapter.
L
Linus Torvalds 已提交
355 356 357 358 359 360 361 362 363 364
 *   offset is a valid register offset for this adapter.
 *
 * Side Effects:
 *   Rather than produce macros for these functions, these routines
 *   are defined using "inline" to ensure that the compiler will
 *   generate inline code and not waste a procedure call and return.
 *   This provides all the benefits of macros, but with the
 *   advantage of strict data type checking.
 */

365 366 367 368 369
static inline void dfx_writel(DFX_board_t *bp, int offset, u32 data)
{
	writel(data, bp->base.mem + offset);
	mb();
}
L
Linus Torvalds 已提交
370

371 372 373 374
static inline void dfx_outl(DFX_board_t *bp, int offset, u32 data)
{
	outl(data, bp->base.port + offset);
}
L
Linus Torvalds 已提交
375

376 377 378 379 380
static void dfx_port_write_long(DFX_board_t *bp, int offset, u32 data)
{
	struct device __unused *bdev = bp->bus_dev;
	int dfx_bus_tc = DFX_BUS_TC(bdev);
	int dfx_use_mmio = DFX_MMIO || dfx_bus_tc;
L
Linus Torvalds 已提交
381

382 383 384 385 386
	if (dfx_use_mmio)
		dfx_writel(bp, offset, data);
	else
		dfx_outl(bp, offset, data);
}
L
Linus Torvalds 已提交
387 388


389 390 391 392 393
static inline void dfx_readl(DFX_board_t *bp, int offset, u32 *data)
{
	mb();
	*data = readl(bp->base.mem + offset);
}
L
Linus Torvalds 已提交
394

395 396 397 398
static inline void dfx_inl(DFX_board_t *bp, int offset, u32 *data)
{
	*data = inl(bp->base.port + offset);
}
L
Linus Torvalds 已提交
399

400 401 402 403 404
static void dfx_port_read_long(DFX_board_t *bp, int offset, u32 *data)
{
	struct device __unused *bdev = bp->bus_dev;
	int dfx_bus_tc = DFX_BUS_TC(bdev);
	int dfx_use_mmio = DFX_MMIO || dfx_bus_tc;
L
Linus Torvalds 已提交
405

406 407 408 409 410
	if (dfx_use_mmio)
		dfx_readl(bp, offset, data);
	else
		dfx_inl(bp, offset, data);
}
L
Linus Torvalds 已提交
411 412


413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442
/*
 * ================
 * = dfx_get_bars =
 * ================
 *
 * Overview:
 *   Retrieves the address range used to access control and status
 *   registers.
 *
 * Returns:
 *   None
 *
 * Arguments:
 *   bdev	- pointer to device information
 *   bar_start	- pointer to store the start address
 *   bar_len	- pointer to store the length of the area
 *
 * Assumptions:
 *   I am sure there are some.
 *
 * Side Effects:
 *   None
 */
static void dfx_get_bars(struct device *bdev,
			 resource_size_t *bar_start, resource_size_t *bar_len)
{
	int dfx_bus_pci = DFX_BUS_PCI(bdev);
	int dfx_bus_eisa = DFX_BUS_EISA(bdev);
	int dfx_bus_tc = DFX_BUS_TC(bdev);
	int dfx_use_mmio = DFX_MMIO || dfx_bus_tc;
L
Linus Torvalds 已提交
443

444 445
	if (dfx_bus_pci) {
		int num = dfx_use_mmio ? 0 : 1;
L
Linus Torvalds 已提交
446

447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479
		*bar_start = pci_resource_start(to_pci_dev(bdev), num);
		*bar_len = pci_resource_len(to_pci_dev(bdev), num);
	}
	if (dfx_bus_eisa) {
		unsigned long base_addr = to_eisa_device(bdev)->base_addr;
		resource_size_t bar;

		if (dfx_use_mmio) {
			bar = inb(base_addr + PI_ESIC_K_MEM_ADD_CMP_2);
			bar <<= 8;
			bar |= inb(base_addr + PI_ESIC_K_MEM_ADD_CMP_1);
			bar <<= 8;
			bar |= inb(base_addr + PI_ESIC_K_MEM_ADD_CMP_0);
			bar <<= 16;
			*bar_start = bar;
			bar = inb(base_addr + PI_ESIC_K_MEM_ADD_MASK_2);
			bar <<= 8;
			bar |= inb(base_addr + PI_ESIC_K_MEM_ADD_MASK_1);
			bar <<= 8;
			bar |= inb(base_addr + PI_ESIC_K_MEM_ADD_MASK_0);
			bar <<= 16;
			*bar_len = (bar | PI_MEM_ADD_MASK_M) + 1;
		} else {
			*bar_start = base_addr;
			*bar_len = PI_ESIC_K_CSR_IO_LEN;
		}
	}
	if (dfx_bus_tc) {
		*bar_start = to_tc_dev(bdev)->resource.start +
			     PI_TC_K_CSR_OFFSET;
		*bar_len = PI_TC_K_CSR_LEN;
	}
}
480

L
Linus Torvalds 已提交
481
/*
482 483 484
 * ================
 * = dfx_register =
 * ================
485
 *
L
Linus Torvalds 已提交
486
 * Overview:
487
 *   Initializes a supported FDDI controller
488
 *
L
Linus Torvalds 已提交
489 490
 * Returns:
 *   Condition code
491
 *
L
Linus Torvalds 已提交
492
 * Arguments:
493
 *   bdev - pointer to device information
L
Linus Torvalds 已提交
494 495 496 497 498 499 500 501 502 503 504 505 506 507 508
 *
 * Functional Description:
 *
 * Return Codes:
 *   0		 - This device (fddi0, fddi1, etc) configured successfully
 *   -EBUSY      - Failed to get resources, or dfx_driver_init failed.
 *
 * Assumptions:
 *   It compiles so it should work :-( (PCI cards do :-)
 *
 * Side Effects:
 *   Device structures for FDDI adapters (fddi0, fddi1, etc) are
 *   initialized and the board resources are read and stored in
 *   the device structure.
 */
509
static int __devinit dfx_register(struct device *bdev)
L
Linus Torvalds 已提交
510 511
{
	static int version_disp;
512 513 514 515
	int dfx_bus_pci = DFX_BUS_PCI(bdev);
	int dfx_bus_tc = DFX_BUS_TC(bdev);
	int dfx_use_mmio = DFX_MMIO || dfx_bus_tc;
	char *print_name = bdev->bus_id;
L
Linus Torvalds 已提交
516 517
	struct net_device *dev;
	DFX_board_t	  *bp;			/* board pointer */
518 519
	resource_size_t bar_start = 0;		/* pointer to port */
	resource_size_t bar_len = 0;		/* resource length */
L
Linus Torvalds 已提交
520
	int alloc_size;				/* total buffer size used */
521 522
	struct resource *region;
	int err = 0;
L
Linus Torvalds 已提交
523 524 525 526 527 528 529 530

	if (!version_disp) {	/* display version info if adapter is found */
		version_disp = 1;	/* set display flag to TRUE so that */
		printk(version);	/* we only display this string ONCE */
	}

	dev = alloc_fddidev(sizeof(*bp));
	if (!dev) {
531
		printk(KERN_ERR "%s: Unable to allocate fddidev, aborting\n",
L
Linus Torvalds 已提交
532 533 534 535 536
		       print_name);
		return -ENOMEM;
	}

	/* Enable PCI device. */
537 538 539 540
	if (dfx_bus_pci && pci_enable_device(to_pci_dev(bdev))) {
		printk(KERN_ERR "%s: Cannot enable PCI device, aborting\n",
		       print_name);
		goto err_out;
L
Linus Torvalds 已提交
541 542 543
	}

	SET_MODULE_OWNER(dev);
544 545 546 547 548
	SET_NETDEV_DEV(dev, bdev);

	bp = netdev_priv(dev);
	bp->bus_dev = bdev;
	dev_set_drvdata(bdev, dev);
L
Linus Torvalds 已提交
549

550
	dfx_get_bars(bdev, &bar_start, &bar_len);
L
Linus Torvalds 已提交
551

552 553 554 555 556
	if (dfx_use_mmio)
		region = request_mem_region(bar_start, bar_len, print_name);
	else
		region = request_region(bar_start, bar_len, print_name);
	if (!region) {
L
Linus Torvalds 已提交
557
		printk(KERN_ERR "%s: Cannot reserve I/O resource "
558 559
		       "0x%lx @ 0x%lx, aborting\n",
		       print_name, (long)bar_len, (long)bar_start);
L
Linus Torvalds 已提交
560
		err = -EBUSY;
561
		goto err_out_disable;
L
Linus Torvalds 已提交
562 563
	}

564 565 566 567 568
	/* Set up I/O base address. */
	if (dfx_use_mmio) {
		bp->base.mem = ioremap_nocache(bar_start, bar_len);
		if (!bp->base.mem) {
			printk(KERN_ERR "%s: Cannot map MMIO\n", print_name);
569
			err = -ENOMEM;
570 571 572 573 574 575
			goto err_out_region;
		}
	} else {
		bp->base.port = bar_start;
		dev->base_addr = bar_start;
	}
L
Linus Torvalds 已提交
576

577
	/* Initialize new device structure */
L
Linus Torvalds 已提交
578 579 580 581 582 583 584 585

	dev->get_stats			= dfx_ctl_get_stats;
	dev->open			= dfx_open;
	dev->stop			= dfx_close;
	dev->hard_start_xmit		= dfx_xmt_queue_pkt;
	dev->set_multicast_list		= dfx_ctl_set_multicast_list;
	dev->set_mac_address		= dfx_ctl_set_mac_address;

586 587
	if (dfx_bus_pci)
		pci_set_master(to_pci_dev(bdev));
L
Linus Torvalds 已提交
588

589
	if (dfx_driver_init(dev, print_name, bar_start) != DFX_K_SUCCESS) {
L
Linus Torvalds 已提交
590
		err = -ENODEV;
591
		goto err_out_unmap;
L
Linus Torvalds 已提交
592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609
	}

	err = register_netdev(dev);
	if (err)
		goto err_out_kfree;

	printk("%s: registered as %s\n", print_name, dev->name);
	return 0;

err_out_kfree:
	alloc_size = sizeof(PI_DESCR_BLOCK) +
		     PI_CMD_REQ_K_SIZE_MAX + PI_CMD_RSP_K_SIZE_MAX +
#ifndef DYNAMIC_BUFFERS
		     (bp->rcv_bufs_to_post * PI_RCV_DATA_K_SIZE_MAX) +
#endif
		     sizeof(PI_CONSUMER_BLOCK) +
		     (PI_ALIGN_K_DESC_BLK - 1);
	if (bp->kmalloced)
610 611 612 613 614 615 616
		dma_free_coherent(bdev, alloc_size,
				  bp->kmalloced, bp->kmalloced_dma);

err_out_unmap:
	if (dfx_use_mmio)
		iounmap(bp->base.mem);

L
Linus Torvalds 已提交
617
err_out_region:
618 619 620 621 622 623 624 625 626
	if (dfx_use_mmio)
		release_mem_region(bar_start, bar_len);
	else
		release_region(bar_start, bar_len);

err_out_disable:
	if (dfx_bus_pci)
		pci_disable_device(to_pci_dev(bdev));

L
Linus Torvalds 已提交
627 628 629 630 631
err_out:
	free_netdev(dev);
	return err;
}

632

L
Linus Torvalds 已提交
633 634 635 636
/*
 * ================
 * = dfx_bus_init =
 * ================
637
 *
L
Linus Torvalds 已提交
638
 * Overview:
639
 *   Initializes the bus-specific controller logic.
640
 *
L
Linus Torvalds 已提交
641 642
 * Returns:
 *   None
643
 *
L
Linus Torvalds 已提交
644 645 646 647 648 649 650 651 652 653 654
 * Arguments:
 *   dev - pointer to device information
 *
 * Functional Description:
 *   Determine and save adapter IRQ in device table,
 *   then perform bus-specific logic initialization.
 *
 * Return Codes:
 *   None
 *
 * Assumptions:
655
 *   bp->base has already been set with the proper
L
Linus Torvalds 已提交
656 657 658 659 660 661 662 663 664 665
 *	 base I/O address for this device.
 *
 * Side Effects:
 *   Interrupts are enabled at the adapter bus-specific logic.
 *   Note:  Interrupts at the DMA engine (PDQ chip) are not
 *   enabled yet.
 */

static void __devinit dfx_bus_init(struct net_device *dev)
{
666 667 668 669 670 671 672
	DFX_board_t *bp = netdev_priv(dev);
	struct device *bdev = bp->bus_dev;
	int dfx_bus_pci = DFX_BUS_PCI(bdev);
	int dfx_bus_eisa = DFX_BUS_EISA(bdev);
	int dfx_bus_tc = DFX_BUS_TC(bdev);
	int dfx_use_mmio = DFX_MMIO || dfx_bus_tc;
	u8 val;
L
Linus Torvalds 已提交
673 674 675

	DBG_printk("In dfx_bus_init...\n");

676
	/* Initialize a pointer back to the net_device struct */
L
Linus Torvalds 已提交
677 678 679 680
	bp->dev = dev;

	/* Initialize adapter based on bus type */

681 682 683 684
	if (dfx_bus_tc)
		dev->irq = to_tc_dev(bdev)->interrupt;
	if (dfx_bus_eisa) {
		unsigned long base_addr = to_eisa_device(bdev)->base_addr;
L
Linus Torvalds 已提交
685

686 687 688 689
		/* Get the interrupt level from the ESIC chip.  */
		val = inb(base_addr + PI_ESIC_K_IO_CONFIG_STAT_0);
		val &= PI_CONFIG_STAT_0_M_IRQ;
		val >>= PI_CONFIG_STAT_0_V_IRQ;
L
Linus Torvalds 已提交
690

691 692 693 694
		switch (val) {
		case PI_CONFIG_STAT_0_IRQ_K_9:
			dev->irq = 9;
			break;
L
Linus Torvalds 已提交
695

696 697 698
		case PI_CONFIG_STAT_0_IRQ_K_10:
			dev->irq = 10;
			break;
L
Linus Torvalds 已提交
699

700 701 702
		case PI_CONFIG_STAT_0_IRQ_K_11:
			dev->irq = 11;
			break;
L
Linus Torvalds 已提交
703

704 705 706 707
		case PI_CONFIG_STAT_0_IRQ_K_15:
			dev->irq = 15;
			break;
		}
L
Linus Torvalds 已提交
708

709 710 711 712 713 714 715 716 717 718
		/*
		 * Enable memory decoding (MEMCS0) and/or port decoding
		 * (IOCS1/IOCS0) as appropriate in Function Control
		 * Register.  One of the port chip selects seems to be
		 * used for the Burst Holdoff register, but this bit of
		 * documentation is missing and as yet it has not been
		 * determined which of the two.  This is also the reason
		 * the size of the decoded port range is twice as large
		 * as one required by the PDQ.
		 */
L
Linus Torvalds 已提交
719

720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736
		/* Set the decode range of the board.  */
		val = ((bp->base.port >> 12) << PI_IO_CMP_V_SLOT);
		outb(base_addr + PI_ESIC_K_IO_ADD_CMP_0_1, val);
		outb(base_addr + PI_ESIC_K_IO_ADD_CMP_0_0, 0);
		outb(base_addr + PI_ESIC_K_IO_ADD_CMP_1_1, val);
		outb(base_addr + PI_ESIC_K_IO_ADD_CMP_1_0, 0);
		val = PI_ESIC_K_CSR_IO_LEN - 1;
		outb(base_addr + PI_ESIC_K_IO_ADD_MASK_0_1, (val >> 8) & 0xff);
		outb(base_addr + PI_ESIC_K_IO_ADD_MASK_0_0, val & 0xff);
		outb(base_addr + PI_ESIC_K_IO_ADD_MASK_1_1, (val >> 8) & 0xff);
		outb(base_addr + PI_ESIC_K_IO_ADD_MASK_1_0, val & 0xff);

		/* Enable the decoders.  */
		val = PI_FUNCTION_CNTRL_M_IOCS1 | PI_FUNCTION_CNTRL_M_IOCS0;
		if (dfx_use_mmio)
			val |= PI_FUNCTION_CNTRL_M_MEMCS0;
		outb(base_addr + PI_ESIC_K_FUNCTION_CNTRL, val);
L
Linus Torvalds 已提交
737 738

		/*
739 740
		 * Enable access to the rest of the module
		 * (including PDQ and packet memory).
L
Linus Torvalds 已提交
741
		 */
742 743
		val = PI_SLOT_CNTRL_M_ENB;
		outb(base_addr + PI_ESIC_K_SLOT_CNTRL, val);
L
Linus Torvalds 已提交
744

745 746 747 748 749 750 751 752 753 754
		/*
		 * Map PDQ registers into memory or port space.  This is
		 * done with a bit in the Burst Holdoff register.
		 */
		val = inb(base_addr + PI_DEFEA_K_BURST_HOLDOFF);
		if (dfx_use_mmio)
			val |= PI_BURST_HOLDOFF_V_MEM_MAP;
		else
			val &= ~PI_BURST_HOLDOFF_V_MEM_MAP;
		outb(base_addr + PI_DEFEA_K_BURST_HOLDOFF, val);
L
Linus Torvalds 已提交
755 756

		/* Enable interrupts at EISA bus interface chip (ESIC) */
757 758 759 760 761 762
		val = inb(base_addr + PI_ESIC_K_IO_CONFIG_STAT_0);
		val |= PI_CONFIG_STAT_0_M_INT_ENB;
		outb(base_addr + PI_ESIC_K_IO_CONFIG_STAT_0, val);
	}
	if (dfx_bus_pci) {
		struct pci_dev *pdev = to_pci_dev(bdev);
L
Linus Torvalds 已提交
763 764 765 766 767 768 769 770

		/* Get the interrupt level from the PCI Configuration Table */

		dev->irq = pdev->irq;

		/* Check Latency Timer and set if less than minimal */

		pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &val);
771
		if (val < PFI_K_LAT_TIMER_MIN) {
L
Linus Torvalds 已提交
772 773
			val = PFI_K_LAT_TIMER_DEF;
			pci_write_config_byte(pdev, PCI_LATENCY_TIMER, val);
774
		}
L
Linus Torvalds 已提交
775 776

		/* Enable interrupts at PCI bus interface chip (PFI) */
777 778 779 780
		val = PFI_MODE_M_PDQ_INT_ENB | PFI_MODE_M_DMA_ENB;
		dfx_port_write_long(bp, PFI_K_REG_MODE_CTRL, val);
	}
}
L
Linus Torvalds 已提交
781

782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832
/*
 * ==================
 * = dfx_bus_uninit =
 * ==================
 *
 * Overview:
 *   Uninitializes the bus-specific controller logic.
 *
 * Returns:
 *   None
 *
 * Arguments:
 *   dev - pointer to device information
 *
 * Functional Description:
 *   Perform bus-specific logic uninitialization.
 *
 * Return Codes:
 *   None
 *
 * Assumptions:
 *   bp->base has already been set with the proper
 *	 base I/O address for this device.
 *
 * Side Effects:
 *   Interrupts are disabled at the adapter bus-specific logic.
 */

static void __devinit dfx_bus_uninit(struct net_device *dev)
{
	DFX_board_t *bp = netdev_priv(dev);
	struct device *bdev = bp->bus_dev;
	int dfx_bus_pci = DFX_BUS_PCI(bdev);
	int dfx_bus_eisa = DFX_BUS_EISA(bdev);
	u8 val;

	DBG_printk("In dfx_bus_uninit...\n");

	/* Uninitialize adapter based on bus type */

	if (dfx_bus_eisa) {
		unsigned long base_addr = to_eisa_device(bdev)->base_addr;

		/* Disable interrupts at EISA bus interface chip (ESIC) */
		val = inb(base_addr + PI_ESIC_K_IO_CONFIG_STAT_0);
		val &= ~PI_CONFIG_STAT_0_M_INT_ENB;
		outb(base_addr + PI_ESIC_K_IO_CONFIG_STAT_0, val);
	}
	if (dfx_bus_pci) {
		/* Disable interrupts at PCI bus interface chip (PFI) */
		dfx_port_write_long(bp, PFI_K_REG_MODE_CTRL, 0);
L
Linus Torvalds 已提交
833
	}
834
}
L
Linus Torvalds 已提交
835

836

L
Linus Torvalds 已提交
837 838 839 840
/*
 * ========================
 * = dfx_bus_config_check =
 * ========================
841
 *
L
Linus Torvalds 已提交
842 843 844
 * Overview:
 *   Checks the configuration (burst size, full-duplex, etc.)  If any parameters
 *   are illegal, then this routine will set new defaults.
845
 *
L
Linus Torvalds 已提交
846 847
 * Returns:
 *   None
848
 *
L
Linus Torvalds 已提交
849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868
 * Arguments:
 *   bp - pointer to board information
 *
 * Functional Description:
 *   For Revision 1 FDDI EISA, Revision 2 or later FDDI EISA with rev E or later
 *   PDQ, and all FDDI PCI controllers, all values are legal.
 *
 * Return Codes:
 *   None
 *
 * Assumptions:
 *   dfx_adap_init has NOT been called yet so burst size and other items have
 *   not been set.
 *
 * Side Effects:
 *   None
 */

static void __devinit dfx_bus_config_check(DFX_board_t *bp)
{
869 870
	struct device __unused *bdev = bp->bus_dev;
	int dfx_bus_eisa = DFX_BUS_EISA(bdev);
L
Linus Torvalds 已提交
871 872 873 874 875 876 877
	int	status;				/* return code from adapter port control call */
	u32	host_data;			/* LW data returned from port control call */

	DBG_printk("In dfx_bus_config_check...\n");

	/* Configuration check only valid for EISA adapter */

878
	if (dfx_bus_eisa) {
L
Linus Torvalds 已提交
879 880 881 882 883 884 885
		/*
		 * First check if revision 2 EISA controller.  Rev. 1 cards used
		 * PDQ revision B, so no workaround needed in this case.  Rev. 3
		 * cards used PDQ revision E, so no workaround needed in this
		 * case, either.  Only Rev. 2 cards used either Rev. D or E
		 * chips, so we must verify the chip revision on Rev. 2 cards.
		 */
886
		if (to_eisa_device(bdev)->id.driver_data == DEFEA_PROD_ID_2) {
L
Linus Torvalds 已提交
887
			/*
888 889
			 * Revision 2 FDDI EISA controller found,
			 * so let's check PDQ revision of adapter.
L
Linus Torvalds 已提交
890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924
			 */
			status = dfx_hw_port_ctrl_req(bp,
											PI_PCTRL_M_SUB_CMD,
											PI_SUB_CMD_K_PDQ_REV_GET,
											0,
											&host_data);
			if ((status != DFX_K_SUCCESS) || (host_data == 2))
				{
				/*
				 * Either we couldn't determine the PDQ revision, or
				 * we determined that it is at revision D.  In either case,
				 * we need to implement the workaround.
				 */

				/* Ensure that the burst size is set to 8 longwords or less */

				switch (bp->burst_size)
					{
					case PI_PDATA_B_DMA_BURST_SIZE_32:
					case PI_PDATA_B_DMA_BURST_SIZE_16:
						bp->burst_size = PI_PDATA_B_DMA_BURST_SIZE_8;
						break;

					default:
						break;
					}

				/* Ensure that full-duplex mode is not enabled */

				bp->full_duplex_enb = PI_SNMP_K_FALSE;
				}
			}
		}
	}

925

L
Linus Torvalds 已提交
926 927 928 929
/*
 * ===================
 * = dfx_driver_init =
 * ===================
930
 *
L
Linus Torvalds 已提交
931 932 933
 * Overview:
 *   Initializes remaining adapter board structure information
 *   and makes sure adapter is in a safe state prior to dfx_open().
934
 *
L
Linus Torvalds 已提交
935 936
 * Returns:
 *   Condition code
937
 *
L
Linus Torvalds 已提交
938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963
 * Arguments:
 *   dev - pointer to device information
 *   print_name - printable device name
 *
 * Functional Description:
 *   This function allocates additional resources such as the host memory
 *   blocks needed by the adapter (eg. descriptor and consumer blocks).
 *	 Remaining bus initialization steps are also completed.  The adapter
 *   is also reset so that it is in the DMA_UNAVAILABLE state.  The OS
 *   must call dfx_open() to open the adapter and bring it on-line.
 *
 * Return Codes:
 *   DFX_K_SUCCESS	- initialization succeeded
 *   DFX_K_FAILURE	- initialization failed - could not allocate memory
 *						or read adapter MAC address
 *
 * Assumptions:
 *   Memory allocated from pci_alloc_consistent() call is physically
 *   contiguous, locked memory.
 *
 * Side Effects:
 *   Adapter is reset and should be in DMA_UNAVAILABLE state before
 *   returning from this routine.
 */

static int __devinit dfx_driver_init(struct net_device *dev,
964 965
				     const char *print_name,
				     resource_size_t bar_start)
L
Linus Torvalds 已提交
966
{
967 968 969 970 971 972 973 974 975 976 977
	DFX_board_t *bp = netdev_priv(dev);
	struct device *bdev = bp->bus_dev;
	int dfx_bus_pci = DFX_BUS_PCI(bdev);
	int dfx_bus_eisa = DFX_BUS_EISA(bdev);
	int dfx_bus_tc = DFX_BUS_TC(bdev);
	int dfx_use_mmio = DFX_MMIO || dfx_bus_tc;
	int alloc_size;			/* total buffer size needed */
	char *top_v, *curr_v;		/* virtual addrs into memory block */
	dma_addr_t top_p, curr_p;	/* physical addrs into memory block */
	u32 data, le32;			/* host data register value */
	char *board_name = NULL;
L
Linus Torvalds 已提交
978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025

	DBG_printk("In dfx_driver_init...\n");

	/* Initialize bus-specific hardware registers */

	dfx_bus_init(dev);

	/*
	 * Initialize default values for configurable parameters
	 *
	 * Note: All of these parameters are ones that a user may
	 *       want to customize.  It'd be nice to break these
	 *		 out into Space.c or someplace else that's more
	 *		 accessible/understandable than this file.
	 */

	bp->full_duplex_enb		= PI_SNMP_K_FALSE;
	bp->req_ttrt			= 8 * 12500;		/* 8ms in 80 nanosec units */
	bp->burst_size			= PI_PDATA_B_DMA_BURST_SIZE_DEF;
	bp->rcv_bufs_to_post	= RCV_BUFS_DEF;

	/*
	 * Ensure that HW configuration is OK
	 *
	 * Note: Depending on the hardware revision, we may need to modify
	 *       some of the configurable parameters to workaround hardware
	 *       limitations.  We'll perform this configuration check AFTER
	 *       setting the parameters to their default values.
	 */

	dfx_bus_config_check(bp);

	/* Disable PDQ interrupts first */

	dfx_port_write_long(bp, PI_PDQ_K_REG_HOST_INT_ENB, PI_HOST_INT_K_DISABLE_ALL_INTS);

	/* Place adapter in DMA_UNAVAILABLE state by resetting adapter */

	(void) dfx_hw_dma_uninit(bp, PI_PDATA_A_RESET_M_SKIP_ST);

	/*  Read the factory MAC address from the adapter then save it */

	if (dfx_hw_port_ctrl_req(bp, PI_PCTRL_M_MLA, PI_PDATA_A_MLA_K_LO, 0,
				 &data) != DFX_K_SUCCESS) {
		printk("%s: Could not read adapter factory MAC address!\n",
		       print_name);
		return(DFX_K_FAILURE);
	}
1026 1027
	le32 = cpu_to_le32(data);
	memcpy(&bp->factory_mac_addr[0], &le32, sizeof(u32));
L
Linus Torvalds 已提交
1028 1029 1030 1031 1032 1033 1034

	if (dfx_hw_port_ctrl_req(bp, PI_PCTRL_M_MLA, PI_PDATA_A_MLA_K_HI, 0,
				 &data) != DFX_K_SUCCESS) {
		printk("%s: Could not read adapter factory MAC address!\n",
		       print_name);
		return(DFX_K_FAILURE);
	}
1035 1036
	le32 = cpu_to_le32(data);
	memcpy(&bp->factory_mac_addr[4], &le32, sizeof(u16));
L
Linus Torvalds 已提交
1037 1038 1039 1040 1041 1042 1043 1044 1045

	/*
	 * Set current address to factory address
	 *
	 * Note: Node address override support is handled through
	 *       dfx_ctl_set_mac_address.
	 */

	memcpy(dev->dev_addr, bp->factory_mac_addr, FDDI_K_ALEN);
1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057
	if (dfx_bus_tc)
		board_name = "DEFTA";
	if (dfx_bus_eisa)
		board_name = "DEFEA";
	if (dfx_bus_pci)
		board_name = "DEFPA";
	pr_info("%s: %s at %saddr = 0x%llx, IRQ = %d, "
		"Hardware addr = %02X-%02X-%02X-%02X-%02X-%02X\n",
		print_name, board_name, dfx_use_mmio ? "" : "I/O ",
		(long long)bar_start, dev->irq,
		dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
		dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
L
Linus Torvalds 已提交
1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071

	/*
	 * Get memory for descriptor block, consumer block, and other buffers
	 * that need to be DMA read or written to by the adapter.
	 */

	alloc_size = sizeof(PI_DESCR_BLOCK) +
					PI_CMD_REQ_K_SIZE_MAX +
					PI_CMD_RSP_K_SIZE_MAX +
#ifndef DYNAMIC_BUFFERS
					(bp->rcv_bufs_to_post * PI_RCV_DATA_K_SIZE_MAX) +
#endif
					sizeof(PI_CONSUMER_BLOCK) +
					(PI_ALIGN_K_DESC_BLK - 1);
1072 1073 1074
	bp->kmalloced = top_v = dma_alloc_coherent(bp->bus_dev, alloc_size,
						   &bp->kmalloced_dma,
						   GFP_ATOMIC);
L
Linus Torvalds 已提交
1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150
	if (top_v == NULL) {
		printk("%s: Could not allocate memory for host buffers "
		       "and structures!\n", print_name);
		return(DFX_K_FAILURE);
	}
	memset(top_v, 0, alloc_size);	/* zero out memory before continuing */
	top_p = bp->kmalloced_dma;	/* get physical address of buffer */

	/*
	 *  To guarantee the 8K alignment required for the descriptor block, 8K - 1
	 *  plus the amount of memory needed was allocated.  The physical address
	 *	is now 8K aligned.  By carving up the memory in a specific order,
	 *  we'll guarantee the alignment requirements for all other structures.
	 *
	 *  Note: If the assumptions change regarding the non-paged, non-cached,
	 *		  physically contiguous nature of the memory block or the address
	 *		  alignments, then we'll need to implement a different algorithm
	 *		  for allocating the needed memory.
	 */

	curr_p = ALIGN(top_p, PI_ALIGN_K_DESC_BLK);
	curr_v = top_v + (curr_p - top_p);

	/* Reserve space for descriptor block */

	bp->descr_block_virt = (PI_DESCR_BLOCK *) curr_v;
	bp->descr_block_phys = curr_p;
	curr_v += sizeof(PI_DESCR_BLOCK);
	curr_p += sizeof(PI_DESCR_BLOCK);

	/* Reserve space for command request buffer */

	bp->cmd_req_virt = (PI_DMA_CMD_REQ *) curr_v;
	bp->cmd_req_phys = curr_p;
	curr_v += PI_CMD_REQ_K_SIZE_MAX;
	curr_p += PI_CMD_REQ_K_SIZE_MAX;

	/* Reserve space for command response buffer */

	bp->cmd_rsp_virt = (PI_DMA_CMD_RSP *) curr_v;
	bp->cmd_rsp_phys = curr_p;
	curr_v += PI_CMD_RSP_K_SIZE_MAX;
	curr_p += PI_CMD_RSP_K_SIZE_MAX;

	/* Reserve space for the LLC host receive queue buffers */

	bp->rcv_block_virt = curr_v;
	bp->rcv_block_phys = curr_p;

#ifndef DYNAMIC_BUFFERS
	curr_v += (bp->rcv_bufs_to_post * PI_RCV_DATA_K_SIZE_MAX);
	curr_p += (bp->rcv_bufs_to_post * PI_RCV_DATA_K_SIZE_MAX);
#endif

	/* Reserve space for the consumer block */

	bp->cons_block_virt = (PI_CONSUMER_BLOCK *) curr_v;
	bp->cons_block_phys = curr_p;

	/* Display virtual and physical addresses if debug driver */

	DBG_printk("%s: Descriptor block virt = %0lX, phys = %0X\n",
		   print_name,
		   (long)bp->descr_block_virt, bp->descr_block_phys);
	DBG_printk("%s: Command Request buffer virt = %0lX, phys = %0X\n",
		   print_name, (long)bp->cmd_req_virt, bp->cmd_req_phys);
	DBG_printk("%s: Command Response buffer virt = %0lX, phys = %0X\n",
		   print_name, (long)bp->cmd_rsp_virt, bp->cmd_rsp_phys);
	DBG_printk("%s: Receive buffer block virt = %0lX, phys = %0X\n",
		   print_name, (long)bp->rcv_block_virt, bp->rcv_block_phys);
	DBG_printk("%s: Consumer block virt = %0lX, phys = %0X\n",
		   print_name, (long)bp->cons_block_virt, bp->cons_block_phys);

	return(DFX_K_SUCCESS);
}

1151

L
Linus Torvalds 已提交
1152 1153 1154 1155
/*
 * =================
 * = dfx_adap_init =
 * =================
1156
 *
L
Linus Torvalds 已提交
1157 1158
 * Overview:
 *   Brings the adapter to the link avail/link unavailable state.
1159
 *
L
Linus Torvalds 已提交
1160 1161
 * Returns:
 *   Condition code
1162
 *
L
Linus Torvalds 已提交
1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252
 * Arguments:
 *   bp - pointer to board information
 *   get_buffers - non-zero if buffers to be allocated
 *
 * Functional Description:
 *   Issues the low-level firmware/hardware calls necessary to bring
 *   the adapter up, or to properly reset and restore adapter during
 *   run-time.
 *
 * Return Codes:
 *   DFX_K_SUCCESS - Adapter brought up successfully
 *   DFX_K_FAILURE - Adapter initialization failed
 *
 * Assumptions:
 *   bp->reset_type should be set to a valid reset type value before
 *   calling this routine.
 *
 * Side Effects:
 *   Adapter should be in LINK_AVAILABLE or LINK_UNAVAILABLE state
 *   upon a successful return of this routine.
 */

static int dfx_adap_init(DFX_board_t *bp, int get_buffers)
	{
	DBG_printk("In dfx_adap_init...\n");

	/* Disable PDQ interrupts first */

	dfx_port_write_long(bp, PI_PDQ_K_REG_HOST_INT_ENB, PI_HOST_INT_K_DISABLE_ALL_INTS);

	/* Place adapter in DMA_UNAVAILABLE state by resetting adapter */

	if (dfx_hw_dma_uninit(bp, bp->reset_type) != DFX_K_SUCCESS)
		{
		printk("%s: Could not uninitialize/reset adapter!\n", bp->dev->name);
		return(DFX_K_FAILURE);
		}

	/*
	 * When the PDQ is reset, some false Type 0 interrupts may be pending,
	 * so we'll acknowledge all Type 0 interrupts now before continuing.
	 */

	dfx_port_write_long(bp, PI_PDQ_K_REG_TYPE_0_STATUS, PI_HOST_INT_K_ACK_ALL_TYPE_0);

	/*
	 * Clear Type 1 and Type 2 registers before going to DMA_AVAILABLE state
	 *
	 * Note: We only need to clear host copies of these registers.  The PDQ reset
	 *       takes care of the on-board register values.
	 */

	bp->cmd_req_reg.lword	= 0;
	bp->cmd_rsp_reg.lword	= 0;
	bp->rcv_xmt_reg.lword	= 0;

	/* Clear consumer block before going to DMA_AVAILABLE state */

	memset(bp->cons_block_virt, 0, sizeof(PI_CONSUMER_BLOCK));

	/* Initialize the DMA Burst Size */

	if (dfx_hw_port_ctrl_req(bp,
							PI_PCTRL_M_SUB_CMD,
							PI_SUB_CMD_K_BURST_SIZE_SET,
							bp->burst_size,
							NULL) != DFX_K_SUCCESS)
		{
		printk("%s: Could not set adapter burst size!\n", bp->dev->name);
		return(DFX_K_FAILURE);
		}

	/*
	 * Set base address of Consumer Block
	 *
	 * Assumption: 32-bit physical address of consumer block is 64 byte
	 *			   aligned.  That is, bits 0-5 of the address must be zero.
	 */

	if (dfx_hw_port_ctrl_req(bp,
							PI_PCTRL_M_CONS_BLOCK,
							bp->cons_block_phys,
							0,
							NULL) != DFX_K_SUCCESS)
		{
		printk("%s: Could not set consumer block address!\n", bp->dev->name);
		return(DFX_K_FAILURE);
		}

	/*
1253 1254
	 * Set the base address of Descriptor Block and bring adapter
	 * to DMA_AVAILABLE state.
L
Linus Torvalds 已提交
1255
	 *
1256 1257
	 * Note: We also set the literal and data swapping requirements
	 *       in this command.
L
Linus Torvalds 已提交
1258
	 *
1259 1260
	 * Assumption: 32-bit physical address of descriptor block
	 *       is 8Kbyte aligned.
L
Linus Torvalds 已提交
1261
	 */
1262 1263 1264 1265 1266 1267 1268 1269
	if (dfx_hw_port_ctrl_req(bp, PI_PCTRL_M_INIT,
				 (u32)(bp->descr_block_phys |
				       PI_PDATA_A_INIT_M_BSWAP_INIT),
				 0, NULL) != DFX_K_SUCCESS) {
		printk("%s: Could not set descriptor block address!\n",
		       bp->dev->name);
		return DFX_K_FAILURE;
	}
L
Linus Torvalds 已提交
1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350

	/* Set transmit flush timeout value */

	bp->cmd_req_virt->cmd_type = PI_CMD_K_CHARS_SET;
	bp->cmd_req_virt->char_set.item[0].item_code	= PI_ITEM_K_FLUSH_TIME;
	bp->cmd_req_virt->char_set.item[0].value		= 3;	/* 3 seconds */
	bp->cmd_req_virt->char_set.item[0].item_index	= 0;
	bp->cmd_req_virt->char_set.item[1].item_code	= PI_ITEM_K_EOL;
	if (dfx_hw_dma_cmd_req(bp) != DFX_K_SUCCESS)
		{
		printk("%s: DMA command request failed!\n", bp->dev->name);
		return(DFX_K_FAILURE);
		}

	/* Set the initial values for eFDXEnable and MACTReq MIB objects */

	bp->cmd_req_virt->cmd_type = PI_CMD_K_SNMP_SET;
	bp->cmd_req_virt->snmp_set.item[0].item_code	= PI_ITEM_K_FDX_ENB_DIS;
	bp->cmd_req_virt->snmp_set.item[0].value		= bp->full_duplex_enb;
	bp->cmd_req_virt->snmp_set.item[0].item_index	= 0;
	bp->cmd_req_virt->snmp_set.item[1].item_code	= PI_ITEM_K_MAC_T_REQ;
	bp->cmd_req_virt->snmp_set.item[1].value		= bp->req_ttrt;
	bp->cmd_req_virt->snmp_set.item[1].item_index	= 0;
	bp->cmd_req_virt->snmp_set.item[2].item_code	= PI_ITEM_K_EOL;
	if (dfx_hw_dma_cmd_req(bp) != DFX_K_SUCCESS)
		{
		printk("%s: DMA command request failed!\n", bp->dev->name);
		return(DFX_K_FAILURE);
		}

	/* Initialize adapter CAM */

	if (dfx_ctl_update_cam(bp) != DFX_K_SUCCESS)
		{
		printk("%s: Adapter CAM update failed!\n", bp->dev->name);
		return(DFX_K_FAILURE);
		}

	/* Initialize adapter filters */

	if (dfx_ctl_update_filters(bp) != DFX_K_SUCCESS)
		{
		printk("%s: Adapter filters update failed!\n", bp->dev->name);
		return(DFX_K_FAILURE);
		}

	/*
	 * Remove any existing dynamic buffers (i.e. if the adapter is being
	 * reinitialized)
	 */

	if (get_buffers)
		dfx_rcv_flush(bp);

	/* Initialize receive descriptor block and produce buffers */

	if (dfx_rcv_init(bp, get_buffers))
	        {
		printk("%s: Receive buffer allocation failed\n", bp->dev->name);
		if (get_buffers)
			dfx_rcv_flush(bp);
		return(DFX_K_FAILURE);
		}

	/* Issue START command and bring adapter to LINK_(UN)AVAILABLE state */

	bp->cmd_req_virt->cmd_type = PI_CMD_K_START;
	if (dfx_hw_dma_cmd_req(bp) != DFX_K_SUCCESS)
		{
		printk("%s: Start command failed\n", bp->dev->name);
		if (get_buffers)
			dfx_rcv_flush(bp);
		return(DFX_K_FAILURE);
		}

	/* Initialization succeeded, reenable PDQ interrupts */

	dfx_port_write_long(bp, PI_PDQ_K_REG_HOST_INT_ENB, PI_HOST_INT_K_ENABLE_DEF_INTS);
	return(DFX_K_SUCCESS);
	}

1351

L
Linus Torvalds 已提交
1352 1353 1354 1355
/*
 * ============
 * = dfx_open =
 * ============
1356
 *
L
Linus Torvalds 已提交
1357 1358
 * Overview:
 *   Opens the adapter
1359
 *
L
Linus Torvalds 已提交
1360 1361
 * Returns:
 *   Condition code
1362
 *
L
Linus Torvalds 已提交
1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383
 * Arguments:
 *   dev - pointer to device information
 *
 * Functional Description:
 *   This function brings the adapter to an operational state.
 *
 * Return Codes:
 *   0		 - Adapter was successfully opened
 *   -EAGAIN - Could not register IRQ or adapter initialization failed
 *
 * Assumptions:
 *   This routine should only be called for a device that was
 *   initialized successfully.
 *
 * Side Effects:
 *   Adapter should be in LINK_AVAILABLE or LINK_UNAVAILABLE state
 *   if the open is successful.
 */

static int dfx_open(struct net_device *dev)
{
1384
	DFX_board_t *bp = netdev_priv(dev);
L
Linus Torvalds 已提交
1385 1386 1387
	int ret;

	DBG_printk("In dfx_open...\n");
1388

L
Linus Torvalds 已提交
1389 1390
	/* Register IRQ - support shared interrupts by passing device ptr */

1391 1392
	ret = request_irq(dev->irq, dfx_interrupt, IRQF_SHARED, dev->name,
			  dev);
L
Linus Torvalds 已提交
1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439
	if (ret) {
		printk(KERN_ERR "%s: Requested IRQ %d is busy\n", dev->name, dev->irq);
		return ret;
	}

	/*
	 * Set current address to factory MAC address
	 *
	 * Note: We've already done this step in dfx_driver_init.
	 *       However, it's possible that a user has set a node
	 *		 address override, then closed and reopened the
	 *		 adapter.  Unless we reset the device address field
	 *		 now, we'll continue to use the existing modified
	 *		 address.
	 */

	memcpy(dev->dev_addr, bp->factory_mac_addr, FDDI_K_ALEN);

	/* Clear local unicast/multicast address tables and counts */

	memset(bp->uc_table, 0, sizeof(bp->uc_table));
	memset(bp->mc_table, 0, sizeof(bp->mc_table));
	bp->uc_count = 0;
	bp->mc_count = 0;

	/* Disable promiscuous filter settings */

	bp->ind_group_prom	= PI_FSTATE_K_BLOCK;
	bp->group_prom		= PI_FSTATE_K_BLOCK;

	spin_lock_init(&bp->lock);

	/* Reset and initialize adapter */

	bp->reset_type = PI_PDATA_A_RESET_M_SKIP_ST;	/* skip self-test */
	if (dfx_adap_init(bp, 1) != DFX_K_SUCCESS)
	{
		printk(KERN_ERR "%s: Adapter open failed!\n", dev->name);
		free_irq(dev->irq, dev);
		return -EAGAIN;
	}

	/* Set device structure info */
	netif_start_queue(dev);
	return(0);
}

1440

L
Linus Torvalds 已提交
1441 1442 1443 1444
/*
 * =============
 * = dfx_close =
 * =============
1445
 *
L
Linus Torvalds 已提交
1446 1447
 * Overview:
 *   Closes the device/module.
1448
 *
L
Linus Torvalds 已提交
1449 1450
 * Returns:
 *   Condition code
1451
 *
L
Linus Torvalds 已提交
1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474
 * Arguments:
 *   dev - pointer to device information
 *
 * Functional Description:
 *   This routine closes the adapter and brings it to a safe state.
 *   The interrupt service routine is deregistered with the OS.
 *   The adapter can be opened again with another call to dfx_open().
 *
 * Return Codes:
 *   Always return 0.
 *
 * Assumptions:
 *   No further requests for this adapter are made after this routine is
 *   called.  dfx_open() can be called to reset and reinitialize the
 *   adapter.
 *
 * Side Effects:
 *   Adapter should be in DMA_UNAVAILABLE state upon completion of this
 *   routine.
 */

static int dfx_close(struct net_device *dev)
{
1475
	DFX_board_t *bp = netdev_priv(dev);
L
Linus Torvalds 已提交
1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523

	DBG_printk("In dfx_close...\n");

	/* Disable PDQ interrupts first */

	dfx_port_write_long(bp, PI_PDQ_K_REG_HOST_INT_ENB, PI_HOST_INT_K_DISABLE_ALL_INTS);

	/* Place adapter in DMA_UNAVAILABLE state by resetting adapter */

	(void) dfx_hw_dma_uninit(bp, PI_PDATA_A_RESET_M_SKIP_ST);

	/*
	 * Flush any pending transmit buffers
	 *
	 * Note: It's important that we flush the transmit buffers
	 *		 BEFORE we clear our copy of the Type 2 register.
	 *		 Otherwise, we'll have no idea how many buffers
	 *		 we need to free.
	 */

	dfx_xmt_flush(bp);

	/*
	 * Clear Type 1 and Type 2 registers after adapter reset
	 *
	 * Note: Even though we're closing the adapter, it's
	 *       possible that an interrupt will occur after
	 *		 dfx_close is called.  Without some assurance to
	 *		 the contrary we want to make sure that we don't
	 *		 process receive and transmit LLC frames and update
	 *		 the Type 2 register with bad information.
	 */

	bp->cmd_req_reg.lword	= 0;
	bp->cmd_rsp_reg.lword	= 0;
	bp->rcv_xmt_reg.lword	= 0;

	/* Clear consumer block for the same reason given above */

	memset(bp->cons_block_virt, 0, sizeof(PI_CONSUMER_BLOCK));

	/* Release all dynamically allocate skb in the receive ring. */

	dfx_rcv_flush(bp);

	/* Clear device structure flags */

	netif_stop_queue(dev);
1524

L
Linus Torvalds 已提交
1525 1526 1527
	/* Deregister (free) IRQ */

	free_irq(dev->irq, dev);
1528

L
Linus Torvalds 已提交
1529 1530 1531
	return(0);
}

1532

L
Linus Torvalds 已提交
1533 1534 1535 1536
/*
 * ======================
 * = dfx_int_pr_halt_id =
 * ======================
1537
 *
L
Linus Torvalds 已提交
1538 1539
 * Overview:
 *   Displays halt id's in string form.
1540
 *
L
Linus Torvalds 已提交
1541 1542
 * Returns:
 *   None
1543
 *
L
Linus Torvalds 已提交
1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615
 * Arguments:
 *   bp - pointer to board information
 *
 * Functional Description:
 *   Determine current halt id and display appropriate string.
 *
 * Return Codes:
 *   None
 *
 * Assumptions:
 *   None
 *
 * Side Effects:
 *   None
 */

static void dfx_int_pr_halt_id(DFX_board_t	*bp)
	{
	PI_UINT32	port_status;			/* PDQ port status register value */
	PI_UINT32	halt_id;				/* PDQ port status halt ID */

	/* Read the latest port status */

	dfx_port_read_long(bp, PI_PDQ_K_REG_PORT_STATUS, &port_status);

	/* Display halt state transition information */

	halt_id = (port_status & PI_PSTATUS_M_HALT_ID) >> PI_PSTATUS_V_HALT_ID;
	switch (halt_id)
		{
		case PI_HALT_ID_K_SELFTEST_TIMEOUT:
			printk("%s: Halt ID: Selftest Timeout\n", bp->dev->name);
			break;

		case PI_HALT_ID_K_PARITY_ERROR:
			printk("%s: Halt ID: Host Bus Parity Error\n", bp->dev->name);
			break;

		case PI_HALT_ID_K_HOST_DIR_HALT:
			printk("%s: Halt ID: Host-Directed Halt\n", bp->dev->name);
			break;

		case PI_HALT_ID_K_SW_FAULT:
			printk("%s: Halt ID: Adapter Software Fault\n", bp->dev->name);
			break;

		case PI_HALT_ID_K_HW_FAULT:
			printk("%s: Halt ID: Adapter Hardware Fault\n", bp->dev->name);
			break;

		case PI_HALT_ID_K_PC_TRACE:
			printk("%s: Halt ID: FDDI Network PC Trace Path Test\n", bp->dev->name);
			break;

		case PI_HALT_ID_K_DMA_ERROR:
			printk("%s: Halt ID: Adapter DMA Error\n", bp->dev->name);
			break;

		case PI_HALT_ID_K_IMAGE_CRC_ERROR:
			printk("%s: Halt ID: Firmware Image CRC Error\n", bp->dev->name);
			break;

		case PI_HALT_ID_K_BUS_EXCEPTION:
			printk("%s: Halt ID: 68000 Bus Exception\n", bp->dev->name);
			break;

		default:
			printk("%s: Halt ID: Unknown (code = %X)\n", bp->dev->name, halt_id);
			break;
		}
	}

1616

L
Linus Torvalds 已提交
1617 1618 1619 1620
/*
 * ==========================
 * = dfx_int_type_0_process =
 * ==========================
1621
 *
L
Linus Torvalds 已提交
1622 1623
 * Overview:
 *   Processes Type 0 interrupts.
1624
 *
L
Linus Torvalds 已提交
1625 1626
 * Returns:
 *   None
1627
 *
L
Linus Torvalds 已提交
1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732
 * Arguments:
 *   bp - pointer to board information
 *
 * Functional Description:
 *   Processes all enabled Type 0 interrupts.  If the reason for the interrupt
 *   is a serious fault on the adapter, then an error message is displayed
 *   and the adapter is reset.
 *
 *   One tricky potential timing window is the rapid succession of "link avail"
 *   "link unavail" state change interrupts.  The acknowledgement of the Type 0
 *   interrupt must be done before reading the state from the Port Status
 *   register.  This is true because a state change could occur after reading
 *   the data, but before acknowledging the interrupt.  If this state change
 *   does happen, it would be lost because the driver is using the old state,
 *   and it will never know about the new state because it subsequently
 *   acknowledges the state change interrupt.
 *
 *          INCORRECT                                      CORRECT
 *      read type 0 int reasons                   read type 0 int reasons
 *      read adapter state                        ack type 0 interrupts
 *      ack type 0 interrupts                     read adapter state
 *      ... process interrupt ...                 ... process interrupt ...
 *
 * Return Codes:
 *   None
 *
 * Assumptions:
 *   None
 *
 * Side Effects:
 *   An adapter reset may occur if the adapter has any Type 0 error interrupts
 *   or if the port status indicates that the adapter is halted.  The driver
 *   is responsible for reinitializing the adapter with the current CAM
 *   contents and adapter filter settings.
 */

static void dfx_int_type_0_process(DFX_board_t	*bp)

	{
	PI_UINT32	type_0_status;		/* Host Interrupt Type 0 register */
	PI_UINT32	state;				/* current adap state (from port status) */

	/*
	 * Read host interrupt Type 0 register to determine which Type 0
	 * interrupts are pending.  Immediately write it back out to clear
	 * those interrupts.
	 */

	dfx_port_read_long(bp, PI_PDQ_K_REG_TYPE_0_STATUS, &type_0_status);
	dfx_port_write_long(bp, PI_PDQ_K_REG_TYPE_0_STATUS, type_0_status);

	/* Check for Type 0 error interrupts */

	if (type_0_status & (PI_TYPE_0_STAT_M_NXM |
							PI_TYPE_0_STAT_M_PM_PAR_ERR |
							PI_TYPE_0_STAT_M_BUS_PAR_ERR))
		{
		/* Check for Non-Existent Memory error */

		if (type_0_status & PI_TYPE_0_STAT_M_NXM)
			printk("%s: Non-Existent Memory Access Error\n", bp->dev->name);

		/* Check for Packet Memory Parity error */

		if (type_0_status & PI_TYPE_0_STAT_M_PM_PAR_ERR)
			printk("%s: Packet Memory Parity Error\n", bp->dev->name);

		/* Check for Host Bus Parity error */

		if (type_0_status & PI_TYPE_0_STAT_M_BUS_PAR_ERR)
			printk("%s: Host Bus Parity Error\n", bp->dev->name);

		/* Reset adapter and bring it back on-line */

		bp->link_available = PI_K_FALSE;	/* link is no longer available */
		bp->reset_type = 0;					/* rerun on-board diagnostics */
		printk("%s: Resetting adapter...\n", bp->dev->name);
		if (dfx_adap_init(bp, 0) != DFX_K_SUCCESS)
			{
			printk("%s: Adapter reset failed!  Disabling adapter interrupts.\n", bp->dev->name);
			dfx_port_write_long(bp, PI_PDQ_K_REG_HOST_INT_ENB, PI_HOST_INT_K_DISABLE_ALL_INTS);
			return;
			}
		printk("%s: Adapter reset successful!\n", bp->dev->name);
		return;
		}

	/* Check for transmit flush interrupt */

	if (type_0_status & PI_TYPE_0_STAT_M_XMT_FLUSH)
		{
		/* Flush any pending xmt's and acknowledge the flush interrupt */

		bp->link_available = PI_K_FALSE;		/* link is no longer available */
		dfx_xmt_flush(bp);						/* flush any outstanding packets */
		(void) dfx_hw_port_ctrl_req(bp,
									PI_PCTRL_M_XMT_DATA_FLUSH_DONE,
									0,
									0,
									NULL);
		}

	/* Check for adapter state change */

	if (type_0_status & PI_TYPE_0_STAT_M_STATE_CHANGE)
1733
		{
L
Linus Torvalds 已提交
1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767
		/* Get latest adapter state */

		state = dfx_hw_adap_state_rd(bp);	/* get adapter state */
		if (state == PI_STATE_K_HALTED)
			{
			/*
			 * Adapter has transitioned to HALTED state, try to reset
			 * adapter to bring it back on-line.  If reset fails,
			 * leave the adapter in the broken state.
			 */

			printk("%s: Controller has transitioned to HALTED state!\n", bp->dev->name);
			dfx_int_pr_halt_id(bp);			/* display halt id as string */

			/* Reset adapter and bring it back on-line */

			bp->link_available = PI_K_FALSE;	/* link is no longer available */
			bp->reset_type = 0;					/* rerun on-board diagnostics */
			printk("%s: Resetting adapter...\n", bp->dev->name);
			if (dfx_adap_init(bp, 0) != DFX_K_SUCCESS)
				{
				printk("%s: Adapter reset failed!  Disabling adapter interrupts.\n", bp->dev->name);
				dfx_port_write_long(bp, PI_PDQ_K_REG_HOST_INT_ENB, PI_HOST_INT_K_DISABLE_ALL_INTS);
				return;
				}
			printk("%s: Adapter reset successful!\n", bp->dev->name);
			}
		else if (state == PI_STATE_K_LINK_AVAIL)
			{
			bp->link_available = PI_K_TRUE;		/* set link available flag */
			}
		}
	}

1768

L
Linus Torvalds 已提交
1769 1770 1771 1772
/*
 * ==================
 * = dfx_int_common =
 * ==================
1773
 *
L
Linus Torvalds 已提交
1774 1775
 * Overview:
 *   Interrupt service routine (ISR)
1776
 *
L
Linus Torvalds 已提交
1777 1778
 * Returns:
 *   None
1779
 *
L
Linus Torvalds 已提交
1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810
 * Arguments:
 *   bp - pointer to board information
 *
 * Functional Description:
 *   This is the ISR which processes incoming adapter interrupts.
 *
 * Return Codes:
 *   None
 *
 * Assumptions:
 *   This routine assumes PDQ interrupts have not been disabled.
 *   When interrupts are disabled at the PDQ, the Port Status register
 *   is automatically cleared.  This routine uses the Port Status
 *   register value to determine whether a Type 0 interrupt occurred,
 *   so it's important that adapter interrupts are not normally
 *   enabled/disabled at the PDQ.
 *
 *   It's vital that this routine is NOT reentered for the
 *   same board and that the OS is not in another section of
 *   code (eg. dfx_xmt_queue_pkt) for the same board on a
 *   different thread.
 *
 * Side Effects:
 *   Pending interrupts are serviced.  Depending on the type of
 *   interrupt, acknowledging and clearing the interrupt at the
 *   PDQ involves writing a register to clear the interrupt bit
 *   or updating completion indices.
 */

static void dfx_int_common(struct net_device *dev)
{
1811
	DFX_board_t *bp = netdev_priv(dev);
L
Linus Torvalds 已提交
1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841
	PI_UINT32	port_status;		/* Port Status register */

	/* Process xmt interrupts - frequent case, so always call this routine */

	if(dfx_xmt_done(bp))				/* free consumed xmt packets */
		netif_wake_queue(dev);

	/* Process rcv interrupts - frequent case, so always call this routine */

	dfx_rcv_queue_process(bp);		/* service received LLC frames */

	/*
	 * Transmit and receive producer and completion indices are updated on the
	 * adapter by writing to the Type 2 Producer register.  Since the frequent
	 * case is that we'll be processing either LLC transmit or receive buffers,
	 * we'll optimize I/O writes by doing a single register write here.
	 */

	dfx_port_write_long(bp, PI_PDQ_K_REG_TYPE_2_PROD, bp->rcv_xmt_reg.lword);

	/* Read PDQ Port Status register to find out which interrupts need processing */

	dfx_port_read_long(bp, PI_PDQ_K_REG_PORT_STATUS, &port_status);

	/* Process Type 0 interrupts (if any) - infrequent, so only call when needed */

	if (port_status & PI_PSTATUS_M_TYPE_0_PENDING)
		dfx_int_type_0_process(bp);	/* process Type 0 interrupts */
	}

1842

L
Linus Torvalds 已提交
1843 1844 1845 1846
/*
 * =================
 * = dfx_interrupt =
 * =================
1847
 *
L
Linus Torvalds 已提交
1848 1849
 * Overview:
 *   Interrupt processing routine
1850
 *
L
Linus Torvalds 已提交
1851
 * Returns:
1852 1853
 *   Whether a valid interrupt was seen.
 *
L
Linus Torvalds 已提交
1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864
 * Arguments:
 *   irq	- interrupt vector
 *   dev_id	- pointer to device information
 *
 * Functional Description:
 *   This routine calls the interrupt processing routine for this adapter.  It
 *   disables and reenables adapter interrupts, as appropriate.  We can support
 *   shared interrupts since the incoming dev_id pointer provides our device
 *   structure context.
 *
 * Return Codes:
1865 1866
 *   IRQ_HANDLED - an IRQ was handled.
 *   IRQ_NONE    - no IRQ was handled.
L
Linus Torvalds 已提交
1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878
 *
 * Assumptions:
 *   The interrupt acknowledgement at the hardware level (eg. ACKing the PIC
 *   on Intel-based systems) is done by the operating system outside this
 *   routine.
 *
 *	 System interrupts are enabled through this call.
 *
 * Side Effects:
 *   Interrupts are disabled, then reenabled at the adapter.
 */

1879
static irqreturn_t dfx_interrupt(int irq, void *dev_id)
1880
{
1881 1882 1883 1884 1885 1886
	struct net_device *dev = dev_id;
	DFX_board_t *bp = netdev_priv(dev);
	struct device *bdev = bp->bus_dev;
	int dfx_bus_pci = DFX_BUS_PCI(bdev);
	int dfx_bus_eisa = DFX_BUS_EISA(bdev);
	int dfx_bus_tc = DFX_BUS_TC(bdev);
L
Linus Torvalds 已提交
1887 1888 1889

	/* Service adapter interrupts */

1890
	if (dfx_bus_pci) {
1891
		u32 status;
L
Linus Torvalds 已提交
1892

1893 1894 1895
		dfx_port_read_long(bp, PFI_K_REG_STATUS, &status);
		if (!(status & PFI_STATUS_M_PDQ_INT))
			return IRQ_NONE;
L
Linus Torvalds 已提交
1896

1897 1898 1899 1900 1901
		spin_lock(&bp->lock);

		/* Disable PDQ-PFI interrupts at PFI */
		dfx_port_write_long(bp, PFI_K_REG_MODE_CTRL,
				    PFI_MODE_M_DMA_ENB);
L
Linus Torvalds 已提交
1902

1903
		/* Call interrupt service routine for this adapter */
L
Linus Torvalds 已提交
1904 1905 1906
		dfx_int_common(dev);

		/* Clear PDQ interrupt status bit and reenable interrupts */
1907 1908
		dfx_port_write_long(bp, PFI_K_REG_STATUS,
				    PFI_STATUS_M_PDQ_INT);
L
Linus Torvalds 已提交
1909
		dfx_port_write_long(bp, PFI_K_REG_MODE_CTRL,
1910 1911
				    (PFI_MODE_M_PDQ_INT_ENB |
				     PFI_MODE_M_DMA_ENB));
L
Linus Torvalds 已提交
1912

1913
		spin_unlock(&bp->lock);
1914 1915 1916
	}
	if (dfx_bus_eisa) {
		unsigned long base_addr = to_eisa_device(bdev)->base_addr;
1917
		u8 status;
L
Linus Torvalds 已提交
1918

1919
		status = inb(base_addr + PI_ESIC_K_IO_CONFIG_STAT_0);
1920 1921
		if (!(status & PI_CONFIG_STAT_0_M_PEND))
			return IRQ_NONE;
L
Linus Torvalds 已提交
1922

1923 1924 1925 1926
		spin_lock(&bp->lock);

		/* Disable interrupts at the ESIC */
		status &= ~PI_CONFIG_STAT_0_M_INT_ENB;
1927
		outb(base_addr + PI_ESIC_K_IO_CONFIG_STAT_0, status);
1928 1929

		/* Call interrupt service routine for this adapter */
L
Linus Torvalds 已提交
1930 1931 1932
		dfx_int_common(dev);

		/* Reenable interrupts at the ESIC */
1933
		status = inb(base_addr + PI_ESIC_K_IO_CONFIG_STAT_0);
1934
		status |= PI_CONFIG_STAT_0_M_INT_ENB;
1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955
		outb(base_addr + PI_ESIC_K_IO_CONFIG_STAT_0, status);

		spin_unlock(&bp->lock);
	}
	if (dfx_bus_tc) {
		u32 status;

		dfx_port_read_long(bp, PI_PDQ_K_REG_PORT_STATUS, &status);
		if (!(status & (PI_PSTATUS_M_RCV_DATA_PENDING |
				PI_PSTATUS_M_XMT_DATA_PENDING |
				PI_PSTATUS_M_SMT_HOST_PENDING |
				PI_PSTATUS_M_UNSOL_PENDING |
				PI_PSTATUS_M_CMD_RSP_PENDING |
				PI_PSTATUS_M_CMD_REQ_PENDING |
				PI_PSTATUS_M_TYPE_0_PENDING)))
			return IRQ_NONE;

		spin_lock(&bp->lock);

		/* Call interrupt service routine for this adapter */
		dfx_int_common(dev);
L
Linus Torvalds 已提交
1956

1957
		spin_unlock(&bp->lock);
L
Linus Torvalds 已提交
1958 1959
	}

1960 1961 1962
	return IRQ_HANDLED;
}

1963

L
Linus Torvalds 已提交
1964 1965 1966 1967
/*
 * =====================
 * = dfx_ctl_get_stats =
 * =====================
1968
 *
L
Linus Torvalds 已提交
1969 1970
 * Overview:
 *   Get statistics for FDDI adapter
1971
 *
L
Linus Torvalds 已提交
1972 1973
 * Returns:
 *   Pointer to FDDI statistics structure
1974
 *
L
Linus Torvalds 已提交
1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008
 * Arguments:
 *   dev - pointer to device information
 *
 * Functional Description:
 *   Gets current MIB objects from adapter, then
 *   returns FDDI statistics structure as defined
 *   in if_fddi.h.
 *
 *   Note: Since the FDDI statistics structure is
 *   still new and the device structure doesn't
 *   have an FDDI-specific get statistics handler,
 *   we'll return the FDDI statistics structure as
 *   a pointer to an Ethernet statistics structure.
 *   That way, at least the first part of the statistics
 *   structure can be decoded properly, and it allows
 *   "smart" applications to perform a second cast to
 *   decode the FDDI-specific statistics.
 *
 *   We'll have to pay attention to this routine as the
 *   device structure becomes more mature and LAN media
 *   independent.
 *
 * Return Codes:
 *   None
 *
 * Assumptions:
 *   None
 *
 * Side Effects:
 *   None
 */

static struct net_device_stats *dfx_ctl_get_stats(struct net_device *dev)
	{
2009
	DFX_board_t *bp = netdev_priv(dev);
L
Linus Torvalds 已提交
2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149

	/* Fill the bp->stats structure with driver-maintained counters */

	bp->stats.gen.rx_packets = bp->rcv_total_frames;
	bp->stats.gen.tx_packets = bp->xmt_total_frames;
	bp->stats.gen.rx_bytes   = bp->rcv_total_bytes;
	bp->stats.gen.tx_bytes   = bp->xmt_total_bytes;
	bp->stats.gen.rx_errors  = bp->rcv_crc_errors +
				   bp->rcv_frame_status_errors +
				   bp->rcv_length_errors;
	bp->stats.gen.tx_errors  = bp->xmt_length_errors;
	bp->stats.gen.rx_dropped = bp->rcv_discards;
	bp->stats.gen.tx_dropped = bp->xmt_discards;
	bp->stats.gen.multicast  = bp->rcv_multicast_frames;
	bp->stats.gen.collisions = 0;		/* always zero (0) for FDDI */

	/* Get FDDI SMT MIB objects */

	bp->cmd_req_virt->cmd_type = PI_CMD_K_SMT_MIB_GET;
	if (dfx_hw_dma_cmd_req(bp) != DFX_K_SUCCESS)
		return((struct net_device_stats *) &bp->stats);

	/* Fill the bp->stats structure with the SMT MIB object values */

	memcpy(bp->stats.smt_station_id, &bp->cmd_rsp_virt->smt_mib_get.smt_station_id, sizeof(bp->cmd_rsp_virt->smt_mib_get.smt_station_id));
	bp->stats.smt_op_version_id					= bp->cmd_rsp_virt->smt_mib_get.smt_op_version_id;
	bp->stats.smt_hi_version_id					= bp->cmd_rsp_virt->smt_mib_get.smt_hi_version_id;
	bp->stats.smt_lo_version_id					= bp->cmd_rsp_virt->smt_mib_get.smt_lo_version_id;
	memcpy(bp->stats.smt_user_data, &bp->cmd_rsp_virt->smt_mib_get.smt_user_data, sizeof(bp->cmd_rsp_virt->smt_mib_get.smt_user_data));
	bp->stats.smt_mib_version_id				= bp->cmd_rsp_virt->smt_mib_get.smt_mib_version_id;
	bp->stats.smt_mac_cts						= bp->cmd_rsp_virt->smt_mib_get.smt_mac_ct;
	bp->stats.smt_non_master_cts				= bp->cmd_rsp_virt->smt_mib_get.smt_non_master_ct;
	bp->stats.smt_master_cts					= bp->cmd_rsp_virt->smt_mib_get.smt_master_ct;
	bp->stats.smt_available_paths				= bp->cmd_rsp_virt->smt_mib_get.smt_available_paths;
	bp->stats.smt_config_capabilities			= bp->cmd_rsp_virt->smt_mib_get.smt_config_capabilities;
	bp->stats.smt_config_policy					= bp->cmd_rsp_virt->smt_mib_get.smt_config_policy;
	bp->stats.smt_connection_policy				= bp->cmd_rsp_virt->smt_mib_get.smt_connection_policy;
	bp->stats.smt_t_notify						= bp->cmd_rsp_virt->smt_mib_get.smt_t_notify;
	bp->stats.smt_stat_rpt_policy				= bp->cmd_rsp_virt->smt_mib_get.smt_stat_rpt_policy;
	bp->stats.smt_trace_max_expiration			= bp->cmd_rsp_virt->smt_mib_get.smt_trace_max_expiration;
	bp->stats.smt_bypass_present				= bp->cmd_rsp_virt->smt_mib_get.smt_bypass_present;
	bp->stats.smt_ecm_state						= bp->cmd_rsp_virt->smt_mib_get.smt_ecm_state;
	bp->stats.smt_cf_state						= bp->cmd_rsp_virt->smt_mib_get.smt_cf_state;
	bp->stats.smt_remote_disconnect_flag		= bp->cmd_rsp_virt->smt_mib_get.smt_remote_disconnect_flag;
	bp->stats.smt_station_status				= bp->cmd_rsp_virt->smt_mib_get.smt_station_status;
	bp->stats.smt_peer_wrap_flag				= bp->cmd_rsp_virt->smt_mib_get.smt_peer_wrap_flag;
	bp->stats.smt_time_stamp					= bp->cmd_rsp_virt->smt_mib_get.smt_msg_time_stamp.ls;
	bp->stats.smt_transition_time_stamp			= bp->cmd_rsp_virt->smt_mib_get.smt_transition_time_stamp.ls;
	bp->stats.mac_frame_status_functions		= bp->cmd_rsp_virt->smt_mib_get.mac_frame_status_functions;
	bp->stats.mac_t_max_capability				= bp->cmd_rsp_virt->smt_mib_get.mac_t_max_capability;
	bp->stats.mac_tvx_capability				= bp->cmd_rsp_virt->smt_mib_get.mac_tvx_capability;
	bp->stats.mac_available_paths				= bp->cmd_rsp_virt->smt_mib_get.mac_available_paths;
	bp->stats.mac_current_path					= bp->cmd_rsp_virt->smt_mib_get.mac_current_path;
	memcpy(bp->stats.mac_upstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_upstream_nbr, FDDI_K_ALEN);
	memcpy(bp->stats.mac_downstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_downstream_nbr, FDDI_K_ALEN);
	memcpy(bp->stats.mac_old_upstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_old_upstream_nbr, FDDI_K_ALEN);
	memcpy(bp->stats.mac_old_downstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_old_downstream_nbr, FDDI_K_ALEN);
	bp->stats.mac_dup_address_test				= bp->cmd_rsp_virt->smt_mib_get.mac_dup_address_test;
	bp->stats.mac_requested_paths				= bp->cmd_rsp_virt->smt_mib_get.mac_requested_paths;
	bp->stats.mac_downstream_port_type			= bp->cmd_rsp_virt->smt_mib_get.mac_downstream_port_type;
	memcpy(bp->stats.mac_smt_address, &bp->cmd_rsp_virt->smt_mib_get.mac_smt_address, FDDI_K_ALEN);
	bp->stats.mac_t_req							= bp->cmd_rsp_virt->smt_mib_get.mac_t_req;
	bp->stats.mac_t_neg							= bp->cmd_rsp_virt->smt_mib_get.mac_t_neg;
	bp->stats.mac_t_max							= bp->cmd_rsp_virt->smt_mib_get.mac_t_max;
	bp->stats.mac_tvx_value						= bp->cmd_rsp_virt->smt_mib_get.mac_tvx_value;
	bp->stats.mac_frame_error_threshold			= bp->cmd_rsp_virt->smt_mib_get.mac_frame_error_threshold;
	bp->stats.mac_frame_error_ratio				= bp->cmd_rsp_virt->smt_mib_get.mac_frame_error_ratio;
	bp->stats.mac_rmt_state						= bp->cmd_rsp_virt->smt_mib_get.mac_rmt_state;
	bp->stats.mac_da_flag						= bp->cmd_rsp_virt->smt_mib_get.mac_da_flag;
	bp->stats.mac_una_da_flag					= bp->cmd_rsp_virt->smt_mib_get.mac_unda_flag;
	bp->stats.mac_frame_error_flag				= bp->cmd_rsp_virt->smt_mib_get.mac_frame_error_flag;
	bp->stats.mac_ma_unitdata_available			= bp->cmd_rsp_virt->smt_mib_get.mac_ma_unitdata_available;
	bp->stats.mac_hardware_present				= bp->cmd_rsp_virt->smt_mib_get.mac_hardware_present;
	bp->stats.mac_ma_unitdata_enable			= bp->cmd_rsp_virt->smt_mib_get.mac_ma_unitdata_enable;
	bp->stats.path_tvx_lower_bound				= bp->cmd_rsp_virt->smt_mib_get.path_tvx_lower_bound;
	bp->stats.path_t_max_lower_bound			= bp->cmd_rsp_virt->smt_mib_get.path_t_max_lower_bound;
	bp->stats.path_max_t_req					= bp->cmd_rsp_virt->smt_mib_get.path_max_t_req;
	memcpy(bp->stats.path_configuration, &bp->cmd_rsp_virt->smt_mib_get.path_configuration, sizeof(bp->cmd_rsp_virt->smt_mib_get.path_configuration));
	bp->stats.port_my_type[0]					= bp->cmd_rsp_virt->smt_mib_get.port_my_type[0];
	bp->stats.port_my_type[1]					= bp->cmd_rsp_virt->smt_mib_get.port_my_type[1];
	bp->stats.port_neighbor_type[0]				= bp->cmd_rsp_virt->smt_mib_get.port_neighbor_type[0];
	bp->stats.port_neighbor_type[1]				= bp->cmd_rsp_virt->smt_mib_get.port_neighbor_type[1];
	bp->stats.port_connection_policies[0]		= bp->cmd_rsp_virt->smt_mib_get.port_connection_policies[0];
	bp->stats.port_connection_policies[1]		= bp->cmd_rsp_virt->smt_mib_get.port_connection_policies[1];
	bp->stats.port_mac_indicated[0]				= bp->cmd_rsp_virt->smt_mib_get.port_mac_indicated[0];
	bp->stats.port_mac_indicated[1]				= bp->cmd_rsp_virt->smt_mib_get.port_mac_indicated[1];
	bp->stats.port_current_path[0]				= bp->cmd_rsp_virt->smt_mib_get.port_current_path[0];
	bp->stats.port_current_path[1]				= bp->cmd_rsp_virt->smt_mib_get.port_current_path[1];
	memcpy(&bp->stats.port_requested_paths[0*3], &bp->cmd_rsp_virt->smt_mib_get.port_requested_paths[0], 3);
	memcpy(&bp->stats.port_requested_paths[1*3], &bp->cmd_rsp_virt->smt_mib_get.port_requested_paths[1], 3);
	bp->stats.port_mac_placement[0]				= bp->cmd_rsp_virt->smt_mib_get.port_mac_placement[0];
	bp->stats.port_mac_placement[1]				= bp->cmd_rsp_virt->smt_mib_get.port_mac_placement[1];
	bp->stats.port_available_paths[0]			= bp->cmd_rsp_virt->smt_mib_get.port_available_paths[0];
	bp->stats.port_available_paths[1]			= bp->cmd_rsp_virt->smt_mib_get.port_available_paths[1];
	bp->stats.port_pmd_class[0]					= bp->cmd_rsp_virt->smt_mib_get.port_pmd_class[0];
	bp->stats.port_pmd_class[1]					= bp->cmd_rsp_virt->smt_mib_get.port_pmd_class[1];
	bp->stats.port_connection_capabilities[0]	= bp->cmd_rsp_virt->smt_mib_get.port_connection_capabilities[0];
	bp->stats.port_connection_capabilities[1]	= bp->cmd_rsp_virt->smt_mib_get.port_connection_capabilities[1];
	bp->stats.port_bs_flag[0]					= bp->cmd_rsp_virt->smt_mib_get.port_bs_flag[0];
	bp->stats.port_bs_flag[1]					= bp->cmd_rsp_virt->smt_mib_get.port_bs_flag[1];
	bp->stats.port_ler_estimate[0]				= bp->cmd_rsp_virt->smt_mib_get.port_ler_estimate[0];
	bp->stats.port_ler_estimate[1]				= bp->cmd_rsp_virt->smt_mib_get.port_ler_estimate[1];
	bp->stats.port_ler_cutoff[0]				= bp->cmd_rsp_virt->smt_mib_get.port_ler_cutoff[0];
	bp->stats.port_ler_cutoff[1]				= bp->cmd_rsp_virt->smt_mib_get.port_ler_cutoff[1];
	bp->stats.port_ler_alarm[0]					= bp->cmd_rsp_virt->smt_mib_get.port_ler_alarm[0];
	bp->stats.port_ler_alarm[1]					= bp->cmd_rsp_virt->smt_mib_get.port_ler_alarm[1];
	bp->stats.port_connect_state[0]				= bp->cmd_rsp_virt->smt_mib_get.port_connect_state[0];
	bp->stats.port_connect_state[1]				= bp->cmd_rsp_virt->smt_mib_get.port_connect_state[1];
	bp->stats.port_pcm_state[0]					= bp->cmd_rsp_virt->smt_mib_get.port_pcm_state[0];
	bp->stats.port_pcm_state[1]					= bp->cmd_rsp_virt->smt_mib_get.port_pcm_state[1];
	bp->stats.port_pc_withhold[0]				= bp->cmd_rsp_virt->smt_mib_get.port_pc_withhold[0];
	bp->stats.port_pc_withhold[1]				= bp->cmd_rsp_virt->smt_mib_get.port_pc_withhold[1];
	bp->stats.port_ler_flag[0]					= bp->cmd_rsp_virt->smt_mib_get.port_ler_flag[0];
	bp->stats.port_ler_flag[1]					= bp->cmd_rsp_virt->smt_mib_get.port_ler_flag[1];
	bp->stats.port_hardware_present[0]			= bp->cmd_rsp_virt->smt_mib_get.port_hardware_present[0];
	bp->stats.port_hardware_present[1]			= bp->cmd_rsp_virt->smt_mib_get.port_hardware_present[1];

	/* Get FDDI counters */

	bp->cmd_req_virt->cmd_type = PI_CMD_K_CNTRS_GET;
	if (dfx_hw_dma_cmd_req(bp) != DFX_K_SUCCESS)
		return((struct net_device_stats *) &bp->stats);

	/* Fill the bp->stats structure with the FDDI counter values */

	bp->stats.mac_frame_cts				= bp->cmd_rsp_virt->cntrs_get.cntrs.frame_cnt.ls;
	bp->stats.mac_copied_cts			= bp->cmd_rsp_virt->cntrs_get.cntrs.copied_cnt.ls;
	bp->stats.mac_transmit_cts			= bp->cmd_rsp_virt->cntrs_get.cntrs.transmit_cnt.ls;
	bp->stats.mac_error_cts				= bp->cmd_rsp_virt->cntrs_get.cntrs.error_cnt.ls;
	bp->stats.mac_lost_cts				= bp->cmd_rsp_virt->cntrs_get.cntrs.lost_cnt.ls;
	bp->stats.port_lct_fail_cts[0]		= bp->cmd_rsp_virt->cntrs_get.cntrs.lct_rejects[0].ls;
	bp->stats.port_lct_fail_cts[1]		= bp->cmd_rsp_virt->cntrs_get.cntrs.lct_rejects[1].ls;
	bp->stats.port_lem_reject_cts[0]	= bp->cmd_rsp_virt->cntrs_get.cntrs.lem_rejects[0].ls;
	bp->stats.port_lem_reject_cts[1]	= bp->cmd_rsp_virt->cntrs_get.cntrs.lem_rejects[1].ls;
	bp->stats.port_lem_cts[0]			= bp->cmd_rsp_virt->cntrs_get.cntrs.link_errors[0].ls;
	bp->stats.port_lem_cts[1]			= bp->cmd_rsp_virt->cntrs_get.cntrs.link_errors[1].ls;

	return((struct net_device_stats *) &bp->stats);
	}

2150

L
Linus Torvalds 已提交
2151 2152 2153 2154
/*
 * ==============================
 * = dfx_ctl_set_multicast_list =
 * ==============================
2155
 *
L
Linus Torvalds 已提交
2156 2157 2158
 * Overview:
 *   Enable/Disable LLC frame promiscuous mode reception
 *   on the adapter and/or update multicast address table.
2159
 *
L
Linus Torvalds 已提交
2160 2161
 * Returns:
 *   None
2162
 *
L
Linus Torvalds 已提交
2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194
 * Arguments:
 *   dev - pointer to device information
 *
 * Functional Description:
 *   This routine follows a fairly simple algorithm for setting the
 *   adapter filters and CAM:
 *
 *		if IFF_PROMISC flag is set
 *			enable LLC individual/group promiscuous mode
 *		else
 *			disable LLC individual/group promiscuous mode
 *			if number of incoming multicast addresses >
 *					(CAM max size - number of unicast addresses in CAM)
 *				enable LLC group promiscuous mode
 *				set driver-maintained multicast address count to zero
 *			else
 *				disable LLC group promiscuous mode
 *				set driver-maintained multicast address count to incoming count
 *			update adapter CAM
 *		update adapter filters
 *
 * Return Codes:
 *   None
 *
 * Assumptions:
 *   Multicast addresses are presented in canonical (LSB) format.
 *
 * Side Effects:
 *   On-board adapter CAM and filters are updated.
 */

static void dfx_ctl_set_multicast_list(struct net_device *dev)
2195 2196
{
	DFX_board_t *bp = netdev_priv(dev);
L
Linus Torvalds 已提交
2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270
	int					i;			/* used as index in for loop */
	struct dev_mc_list	*dmi;		/* ptr to multicast addr entry */

	/* Enable LLC frame promiscuous mode, if necessary */

	if (dev->flags & IFF_PROMISC)
		bp->ind_group_prom = PI_FSTATE_K_PASS;		/* Enable LLC ind/group prom mode */

	/* Else, update multicast address table */

	else
		{
		bp->ind_group_prom = PI_FSTATE_K_BLOCK;		/* Disable LLC ind/group prom mode */
		/*
		 * Check whether incoming multicast address count exceeds table size
		 *
		 * Note: The adapters utilize an on-board 64 entry CAM for
		 *       supporting perfect filtering of multicast packets
		 *		 and bridge functions when adding unicast addresses.
		 *		 There is no hash function available.  To support
		 *		 additional multicast addresses, the all multicast
		 *		 filter (LLC group promiscuous mode) must be enabled.
		 *
		 *		 The firmware reserves two CAM entries for SMT-related
		 *		 multicast addresses, which leaves 62 entries available.
		 *		 The following code ensures that we're not being asked
		 *		 to add more than 62 addresses to the CAM.  If we are,
		 *		 the driver will enable the all multicast filter.
		 *		 Should the number of multicast addresses drop below
		 *		 the high water mark, the filter will be disabled and
		 *		 perfect filtering will be used.
		 */

		if (dev->mc_count > (PI_CMD_ADDR_FILTER_K_SIZE - bp->uc_count))
			{
			bp->group_prom	= PI_FSTATE_K_PASS;		/* Enable LLC group prom mode */
			bp->mc_count	= 0;					/* Don't add mc addrs to CAM */
			}
		else
			{
			bp->group_prom	= PI_FSTATE_K_BLOCK;	/* Disable LLC group prom mode */
			bp->mc_count	= dev->mc_count;		/* Add mc addrs to CAM */
			}

		/* Copy addresses to multicast address table, then update adapter CAM */

		dmi = dev->mc_list;				/* point to first multicast addr */
		for (i=0; i < bp->mc_count; i++)
			{
			memcpy(&bp->mc_table[i*FDDI_K_ALEN], dmi->dmi_addr, FDDI_K_ALEN);
			dmi = dmi->next;			/* point to next multicast addr */
			}
		if (dfx_ctl_update_cam(bp) != DFX_K_SUCCESS)
			{
			DBG_printk("%s: Could not update multicast address table!\n", dev->name);
			}
		else
			{
			DBG_printk("%s: Multicast address table updated!  Added %d addresses.\n", dev->name, bp->mc_count);
			}
		}

	/* Update adapter filters */

	if (dfx_ctl_update_filters(bp) != DFX_K_SUCCESS)
		{
		DBG_printk("%s: Could not update adapter filters!\n", dev->name);
		}
	else
		{
		DBG_printk("%s: Adapter filters updated!\n", dev->name);
		}
	}

2271

L
Linus Torvalds 已提交
2272 2273 2274 2275
/*
 * ===========================
 * = dfx_ctl_set_mac_address =
 * ===========================
2276
 *
L
Linus Torvalds 已提交
2277 2278 2279
 * Overview:
 *   Add node address override (unicast address) to adapter
 *   CAM and update dev_addr field in device table.
2280
 *
L
Linus Torvalds 已提交
2281 2282
 * Returns:
 *   None
2283
 *
L
Linus Torvalds 已提交
2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310
 * Arguments:
 *   dev  - pointer to device information
 *   addr - pointer to sockaddr structure containing unicast address to add
 *
 * Functional Description:
 *   The adapter supports node address overrides by adding one or more
 *   unicast addresses to the adapter CAM.  This is similar to adding
 *   multicast addresses.  In this routine we'll update the driver and
 *   device structures with the new address, then update the adapter CAM
 *   to ensure that the adapter will copy and strip frames destined and
 *   sourced by that address.
 *
 * Return Codes:
 *   Always returns zero.
 *
 * Assumptions:
 *   The address pointed to by addr->sa_data is a valid unicast
 *   address and is presented in canonical (LSB) format.
 *
 * Side Effects:
 *   On-board adapter CAM is updated.  On-board adapter filters
 *   may be updated.
 */

static int dfx_ctl_set_mac_address(struct net_device *dev, void *addr)
	{
	struct sockaddr	*p_sockaddr = (struct sockaddr *)addr;
2311
	DFX_board_t *bp = netdev_priv(dev);
L
Linus Torvalds 已提交
2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360

	/* Copy unicast address to driver-maintained structs and update count */

	memcpy(dev->dev_addr, p_sockaddr->sa_data, FDDI_K_ALEN);	/* update device struct */
	memcpy(&bp->uc_table[0], p_sockaddr->sa_data, FDDI_K_ALEN);	/* update driver struct */
	bp->uc_count = 1;

	/*
	 * Verify we're not exceeding the CAM size by adding unicast address
	 *
	 * Note: It's possible that before entering this routine we've
	 *       already filled the CAM with 62 multicast addresses.
	 *		 Since we need to place the node address override into
	 *		 the CAM, we have to check to see that we're not
	 *		 exceeding the CAM size.  If we are, we have to enable
	 *		 the LLC group (multicast) promiscuous mode filter as
	 *		 in dfx_ctl_set_multicast_list.
	 */

	if ((bp->uc_count + bp->mc_count) > PI_CMD_ADDR_FILTER_K_SIZE)
		{
		bp->group_prom	= PI_FSTATE_K_PASS;		/* Enable LLC group prom mode */
		bp->mc_count	= 0;					/* Don't add mc addrs to CAM */

		/* Update adapter filters */

		if (dfx_ctl_update_filters(bp) != DFX_K_SUCCESS)
			{
			DBG_printk("%s: Could not update adapter filters!\n", dev->name);
			}
		else
			{
			DBG_printk("%s: Adapter filters updated!\n", dev->name);
			}
		}

	/* Update adapter CAM with new unicast address */

	if (dfx_ctl_update_cam(bp) != DFX_K_SUCCESS)
		{
		DBG_printk("%s: Could not set new MAC address!\n", dev->name);
		}
	else
		{
		DBG_printk("%s: Adapter CAM updated with new MAC address\n", dev->name);
		}
	return(0);			/* always return zero */
	}

2361

L
Linus Torvalds 已提交
2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445
/*
 * ======================
 * = dfx_ctl_update_cam =
 * ======================
 *
 * Overview:
 *   Procedure to update adapter CAM (Content Addressable Memory)
 *   with desired unicast and multicast address entries.
 *
 * Returns:
 *   Condition code
 *
 * Arguments:
 *   bp - pointer to board information
 *
 * Functional Description:
 *   Updates adapter CAM with current contents of board structure
 *   unicast and multicast address tables.  Since there are only 62
 *   free entries in CAM, this routine ensures that the command
 *   request buffer is not overrun.
 *
 * Return Codes:
 *   DFX_K_SUCCESS - Request succeeded
 *   DFX_K_FAILURE - Request failed
 *
 * Assumptions:
 *   All addresses being added (unicast and multicast) are in canonical
 *   order.
 *
 * Side Effects:
 *   On-board adapter CAM is updated.
 */

static int dfx_ctl_update_cam(DFX_board_t *bp)
	{
	int			i;				/* used as index */
	PI_LAN_ADDR	*p_addr;		/* pointer to CAM entry */

	/*
	 * Fill in command request information
	 *
	 * Note: Even though both the unicast and multicast address
	 *       table entries are stored as contiguous 6 byte entries,
	 *		 the firmware address filter set command expects each
	 *		 entry to be two longwords (8 bytes total).  We must be
	 *		 careful to only copy the six bytes of each unicast and
	 *		 multicast table entry into each command entry.  This
	 *		 is also why we must first clear the entire command
	 *		 request buffer.
	 */

	memset(bp->cmd_req_virt, 0, PI_CMD_REQ_K_SIZE_MAX);	/* first clear buffer */
	bp->cmd_req_virt->cmd_type = PI_CMD_K_ADDR_FILTER_SET;
	p_addr = &bp->cmd_req_virt->addr_filter_set.entry[0];

	/* Now add unicast addresses to command request buffer, if any */

	for (i=0; i < (int)bp->uc_count; i++)
		{
		if (i < PI_CMD_ADDR_FILTER_K_SIZE)
			{
			memcpy(p_addr, &bp->uc_table[i*FDDI_K_ALEN], FDDI_K_ALEN);
			p_addr++;			/* point to next command entry */
			}
		}

	/* Now add multicast addresses to command request buffer, if any */

	for (i=0; i < (int)bp->mc_count; i++)
		{
		if ((i + bp->uc_count) < PI_CMD_ADDR_FILTER_K_SIZE)
			{
			memcpy(p_addr, &bp->mc_table[i*FDDI_K_ALEN], FDDI_K_ALEN);
			p_addr++;			/* point to next command entry */
			}
		}

	/* Issue command to update adapter CAM, then return */

	if (dfx_hw_dma_cmd_req(bp) != DFX_K_SUCCESS)
		return(DFX_K_FAILURE);
	return(DFX_K_SUCCESS);
	}

2446

L
Linus Torvalds 已提交
2447 2448 2449 2450 2451 2452 2453 2454
/*
 * ==========================
 * = dfx_ctl_update_filters =
 * ==========================
 *
 * Overview:
 *   Procedure to update adapter filters with desired
 *   filter settings.
2455
 *
L
Linus Torvalds 已提交
2456 2457
 * Returns:
 *   Condition code
2458
 *
L
Linus Torvalds 已提交
2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511
 * Arguments:
 *   bp - pointer to board information
 *
 * Functional Description:
 *   Enables or disables filter using current filter settings.
 *
 * Return Codes:
 *   DFX_K_SUCCESS - Request succeeded.
 *   DFX_K_FAILURE - Request failed.
 *
 * Assumptions:
 *   We must always pass up packets destined to the broadcast
 *   address (FF-FF-FF-FF-FF-FF), so we'll always keep the
 *   broadcast filter enabled.
 *
 * Side Effects:
 *   On-board adapter filters are updated.
 */

static int dfx_ctl_update_filters(DFX_board_t *bp)
	{
	int	i = 0;					/* used as index */

	/* Fill in command request information */

	bp->cmd_req_virt->cmd_type = PI_CMD_K_FILTERS_SET;

	/* Initialize Broadcast filter - * ALWAYS ENABLED * */

	bp->cmd_req_virt->filter_set.item[i].item_code	= PI_ITEM_K_BROADCAST;
	bp->cmd_req_virt->filter_set.item[i++].value	= PI_FSTATE_K_PASS;

	/* Initialize LLC Individual/Group Promiscuous filter */

	bp->cmd_req_virt->filter_set.item[i].item_code	= PI_ITEM_K_IND_GROUP_PROM;
	bp->cmd_req_virt->filter_set.item[i++].value	= bp->ind_group_prom;

	/* Initialize LLC Group Promiscuous filter */

	bp->cmd_req_virt->filter_set.item[i].item_code	= PI_ITEM_K_GROUP_PROM;
	bp->cmd_req_virt->filter_set.item[i++].value	= bp->group_prom;

	/* Terminate the item code list */

	bp->cmd_req_virt->filter_set.item[i].item_code	= PI_ITEM_K_EOL;

	/* Issue command to update adapter filters, then return */

	if (dfx_hw_dma_cmd_req(bp) != DFX_K_SUCCESS)
		return(DFX_K_FAILURE);
	return(DFX_K_SUCCESS);
	}

2512

L
Linus Torvalds 已提交
2513 2514 2515 2516
/*
 * ======================
 * = dfx_hw_dma_cmd_req =
 * ======================
2517
 *
L
Linus Torvalds 已提交
2518 2519
 * Overview:
 *   Sends PDQ DMA command to adapter firmware
2520
 *
L
Linus Torvalds 已提交
2521 2522
 * Returns:
 *   Condition code
2523
 *
L
Linus Torvalds 已提交
2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556
 * Arguments:
 *   bp - pointer to board information
 *
 * Functional Description:
 *   The command request and response buffers are posted to the adapter in the manner
 *   described in the PDQ Port Specification:
 *
 *		1. Command Response Buffer is posted to adapter.
 *		2. Command Request Buffer is posted to adapter.
 *		3. Command Request consumer index is polled until it indicates that request
 *         buffer has been DMA'd to adapter.
 *		4. Command Response consumer index is polled until it indicates that response
 *         buffer has been DMA'd from adapter.
 *
 *   This ordering ensures that a response buffer is already available for the firmware
 *   to use once it's done processing the request buffer.
 *
 * Return Codes:
 *   DFX_K_SUCCESS	  - DMA command succeeded
 * 	 DFX_K_OUTSTATE   - Adapter is NOT in proper state
 *   DFX_K_HW_TIMEOUT - DMA command timed out
 *
 * Assumptions:
 *   Command request buffer has already been filled with desired DMA command.
 *
 * Side Effects:
 *   None
 */

static int dfx_hw_dma_cmd_req(DFX_board_t *bp)
	{
	int status;			/* adapter status */
	int timeout_cnt;	/* used in for loops */
2557

L
Linus Torvalds 已提交
2558
	/* Make sure the adapter is in a state that we can issue the DMA command in */
2559

L
Linus Torvalds 已提交
2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579
	status = dfx_hw_adap_state_rd(bp);
	if ((status == PI_STATE_K_RESET)		||
		(status == PI_STATE_K_HALTED)		||
		(status == PI_STATE_K_DMA_UNAVAIL)	||
		(status == PI_STATE_K_UPGRADE))
		return(DFX_K_OUTSTATE);

	/* Put response buffer on the command response queue */

	bp->descr_block_virt->cmd_rsp[bp->cmd_rsp_reg.index.prod].long_0 = (u32) (PI_RCV_DESCR_M_SOP |
			((PI_CMD_RSP_K_SIZE_MAX / PI_ALIGN_K_CMD_RSP_BUFF) << PI_RCV_DESCR_V_SEG_LEN));
	bp->descr_block_virt->cmd_rsp[bp->cmd_rsp_reg.index.prod].long_1 = bp->cmd_rsp_phys;

	/* Bump (and wrap) the producer index and write out to register */

	bp->cmd_rsp_reg.index.prod += 1;
	bp->cmd_rsp_reg.index.prod &= PI_CMD_RSP_K_NUM_ENTRIES-1;
	dfx_port_write_long(bp, PI_PDQ_K_REG_CMD_RSP_PROD, bp->cmd_rsp_reg.lword);

	/* Put request buffer on the command request queue */
2580

L
Linus Torvalds 已提交
2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601
	bp->descr_block_virt->cmd_req[bp->cmd_req_reg.index.prod].long_0 = (u32) (PI_XMT_DESCR_M_SOP |
			PI_XMT_DESCR_M_EOP | (PI_CMD_REQ_K_SIZE_MAX << PI_XMT_DESCR_V_SEG_LEN));
	bp->descr_block_virt->cmd_req[bp->cmd_req_reg.index.prod].long_1 = bp->cmd_req_phys;

	/* Bump (and wrap) the producer index and write out to register */

	bp->cmd_req_reg.index.prod += 1;
	bp->cmd_req_reg.index.prod &= PI_CMD_REQ_K_NUM_ENTRIES-1;
	dfx_port_write_long(bp, PI_PDQ_K_REG_CMD_REQ_PROD, bp->cmd_req_reg.lword);

	/*
	 * Here we wait for the command request consumer index to be equal
	 * to the producer, indicating that the adapter has DMAed the request.
	 */

	for (timeout_cnt = 20000; timeout_cnt > 0; timeout_cnt--)
		{
		if (bp->cmd_req_reg.index.prod == (u8)(bp->cons_block_virt->cmd_req))
			break;
		udelay(100);			/* wait for 100 microseconds */
		}
2602
	if (timeout_cnt == 0)
L
Linus Torvalds 已提交
2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621
		return(DFX_K_HW_TIMEOUT);

	/* Bump (and wrap) the completion index and write out to register */

	bp->cmd_req_reg.index.comp += 1;
	bp->cmd_req_reg.index.comp &= PI_CMD_REQ_K_NUM_ENTRIES-1;
	dfx_port_write_long(bp, PI_PDQ_K_REG_CMD_REQ_PROD, bp->cmd_req_reg.lword);

	/*
	 * Here we wait for the command response consumer index to be equal
	 * to the producer, indicating that the adapter has DMAed the response.
	 */

	for (timeout_cnt = 20000; timeout_cnt > 0; timeout_cnt--)
		{
		if (bp->cmd_rsp_reg.index.prod == (u8)(bp->cons_block_virt->cmd_rsp))
			break;
		udelay(100);			/* wait for 100 microseconds */
		}
2622
	if (timeout_cnt == 0)
L
Linus Torvalds 已提交
2623 2624 2625 2626 2627 2628 2629 2630 2631 2632
		return(DFX_K_HW_TIMEOUT);

	/* Bump (and wrap) the completion index and write out to register */

	bp->cmd_rsp_reg.index.comp += 1;
	bp->cmd_rsp_reg.index.comp &= PI_CMD_RSP_K_NUM_ENTRIES-1;
	dfx_port_write_long(bp, PI_PDQ_K_REG_CMD_RSP_PROD, bp->cmd_rsp_reg.lword);
	return(DFX_K_SUCCESS);
	}

2633

L
Linus Torvalds 已提交
2634 2635 2636 2637
/*
 * ========================
 * = dfx_hw_port_ctrl_req =
 * ========================
2638
 *
L
Linus Torvalds 已提交
2639 2640
 * Overview:
 *   Sends PDQ port control command to adapter firmware
2641
 *
L
Linus Torvalds 已提交
2642 2643
 * Returns:
 *   Host data register value in host_data if ptr is not NULL
2644
 *
L
Linus Torvalds 已提交
2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679
 * Arguments:
 *   bp			- pointer to board information
 *	 command	- port control command
 *	 data_a		- port data A register value
 *	 data_b		- port data B register value
 *	 host_data	- ptr to host data register value
 *
 * Functional Description:
 *   Send generic port control command to adapter by writing
 *   to various PDQ port registers, then polling for completion.
 *
 * Return Codes:
 *   DFX_K_SUCCESS	  - port control command succeeded
 *   DFX_K_HW_TIMEOUT - port control command timed out
 *
 * Assumptions:
 *   None
 *
 * Side Effects:
 *   None
 */

static int dfx_hw_port_ctrl_req(
	DFX_board_t	*bp,
	PI_UINT32	command,
	PI_UINT32	data_a,
	PI_UINT32	data_b,
	PI_UINT32	*host_data
	)

	{
	PI_UINT32	port_cmd;		/* Port Control command register value */
	int			timeout_cnt;	/* used in for loops */

	/* Set Command Error bit in command longword */
2680

L
Linus Torvalds 已提交
2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702
	port_cmd = (PI_UINT32) (command | PI_PCTRL_M_CMD_ERROR);

	/* Issue port command to the adapter */

	dfx_port_write_long(bp, PI_PDQ_K_REG_PORT_DATA_A, data_a);
	dfx_port_write_long(bp, PI_PDQ_K_REG_PORT_DATA_B, data_b);
	dfx_port_write_long(bp, PI_PDQ_K_REG_PORT_CTRL, port_cmd);

	/* Now wait for command to complete */

	if (command == PI_PCTRL_M_BLAST_FLASH)
		timeout_cnt = 600000;	/* set command timeout count to 60 seconds */
	else
		timeout_cnt = 20000;	/* set command timeout count to 2 seconds */

	for (; timeout_cnt > 0; timeout_cnt--)
		{
		dfx_port_read_long(bp, PI_PDQ_K_REG_PORT_CTRL, &port_cmd);
		if (!(port_cmd & PI_PCTRL_M_CMD_ERROR))
			break;
		udelay(100);			/* wait for 100 microseconds */
		}
2703
	if (timeout_cnt == 0)
L
Linus Torvalds 已提交
2704 2705 2706
		return(DFX_K_HW_TIMEOUT);

	/*
2707 2708
	 * If the address of host_data is non-zero, assume caller has supplied a
	 * non NULL pointer, and return the contents of the HOST_DATA register in
L
Linus Torvalds 已提交
2709 2710 2711 2712 2713 2714 2715 2716
	 * it.
	 */

	if (host_data != NULL)
		dfx_port_read_long(bp, PI_PDQ_K_REG_HOST_DATA, host_data);
	return(DFX_K_SUCCESS);
	}

2717

L
Linus Torvalds 已提交
2718 2719 2720 2721
/*
 * =====================
 * = dfx_hw_adap_reset =
 * =====================
2722
 *
L
Linus Torvalds 已提交
2723 2724
 * Overview:
 *   Resets adapter
2725
 *
L
Linus Torvalds 已提交
2726 2727
 * Returns:
 *   None
2728
 *
L
Linus Torvalds 已提交
2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770
 * Arguments:
 *   bp   - pointer to board information
 *   type - type of reset to perform
 *
 * Functional Description:
 *   Issue soft reset to adapter by writing to PDQ Port Reset
 *   register.  Use incoming reset type to tell adapter what
 *   kind of reset operation to perform.
 *
 * Return Codes:
 *   None
 *
 * Assumptions:
 *   This routine merely issues a soft reset to the adapter.
 *   It is expected that after this routine returns, the caller
 *   will appropriately poll the Port Status register for the
 *   adapter to enter the proper state.
 *
 * Side Effects:
 *   Internal adapter registers are cleared.
 */

static void dfx_hw_adap_reset(
	DFX_board_t	*bp,
	PI_UINT32	type
	)

	{
	/* Set Reset type and assert reset */

	dfx_port_write_long(bp, PI_PDQ_K_REG_PORT_DATA_A, type);	/* tell adapter type of reset */
	dfx_port_write_long(bp, PI_PDQ_K_REG_PORT_RESET, PI_RESET_M_ASSERT_RESET);

	/* Wait for at least 1 Microsecond according to the spec. We wait 20 just to be safe */

	udelay(20);

	/* Deassert reset */

	dfx_port_write_long(bp, PI_PDQ_K_REG_PORT_RESET, 0);
	}

2771

L
Linus Torvalds 已提交
2772 2773 2774 2775
/*
 * ========================
 * = dfx_hw_adap_state_rd =
 * ========================
2776
 *
L
Linus Torvalds 已提交
2777 2778
 * Overview:
 *   Returns current adapter state
2779
 *
L
Linus Torvalds 已提交
2780 2781
 * Returns:
 *   Adapter state per PDQ Port Specification
2782
 *
L
Linus Torvalds 已提交
2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806
 * Arguments:
 *   bp - pointer to board information
 *
 * Functional Description:
 *   Reads PDQ Port Status register and returns adapter state.
 *
 * Return Codes:
 *   None
 *
 * Assumptions:
 *   None
 *
 * Side Effects:
 *   None
 */

static int dfx_hw_adap_state_rd(DFX_board_t *bp)
	{
	PI_UINT32 port_status;		/* Port Status register value */

	dfx_port_read_long(bp, PI_PDQ_K_REG_PORT_STATUS, &port_status);
	return((port_status & PI_PSTATUS_M_STATE) >> PI_PSTATUS_V_STATE);
	}

2807

L
Linus Torvalds 已提交
2808 2809 2810 2811
/*
 * =====================
 * = dfx_hw_dma_uninit =
 * =====================
2812
 *
L
Linus Torvalds 已提交
2813 2814
 * Overview:
 *   Brings adapter to DMA_UNAVAILABLE state
2815
 *
L
Linus Torvalds 已提交
2816 2817
 * Returns:
 *   Condition code
2818
 *
L
Linus Torvalds 已提交
2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854
 * Arguments:
 *   bp   - pointer to board information
 *   type - type of reset to perform
 *
 * Functional Description:
 *   Bring adapter to DMA_UNAVAILABLE state by performing the following:
 *		1. Set reset type bit in Port Data A Register then reset adapter.
 *		2. Check that adapter is in DMA_UNAVAILABLE state.
 *
 * Return Codes:
 *   DFX_K_SUCCESS	  - adapter is in DMA_UNAVAILABLE state
 *   DFX_K_HW_TIMEOUT - adapter did not reset properly
 *
 * Assumptions:
 *   None
 *
 * Side Effects:
 *   Internal adapter registers are cleared.
 */

static int dfx_hw_dma_uninit(DFX_board_t *bp, PI_UINT32 type)
	{
	int timeout_cnt;	/* used in for loops */

	/* Set reset type bit and reset adapter */

	dfx_hw_adap_reset(bp, type);

	/* Now wait for adapter to enter DMA_UNAVAILABLE state */

	for (timeout_cnt = 100000; timeout_cnt > 0; timeout_cnt--)
		{
		if (dfx_hw_adap_state_rd(bp) == PI_STATE_K_DMA_UNAVAIL)
			break;
		udelay(100);					/* wait for 100 microseconds */
		}
2855
	if (timeout_cnt == 0)
L
Linus Torvalds 已提交
2856 2857 2858
		return(DFX_K_HW_TIMEOUT);
	return(DFX_K_SUCCESS);
	}
2859

L
Linus Torvalds 已提交
2860 2861 2862 2863
/*
 *	Align an sk_buff to a boundary power of 2
 *
 */
2864

L
Linus Torvalds 已提交
2865 2866 2867 2868
static void my_skb_align(struct sk_buff *skb, int n)
{
	unsigned long x = (unsigned long)skb->data;
	unsigned long v;
2869

L
Linus Torvalds 已提交
2870
	v = ALIGN(x, n);	/* Where we want to be */
2871

L
Linus Torvalds 已提交
2872 2873 2874
	skb_reserve(skb, v - x);
}

2875

L
Linus Torvalds 已提交
2876 2877 2878 2879
/*
 * ================
 * = dfx_rcv_init =
 * ================
2880
 *
L
Linus Torvalds 已提交
2881 2882
 * Overview:
 *   Produces buffers to adapter LLC Host receive descriptor block
2883
 *
L
Linus Torvalds 已提交
2884 2885
 * Returns:
 *   None
2886
 *
L
Linus Torvalds 已提交
2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946
 * Arguments:
 *   bp - pointer to board information
 *   get_buffers - non-zero if buffers to be allocated
 *
 * Functional Description:
 *   This routine can be called during dfx_adap_init() or during an adapter
 *	 reset.  It initializes the descriptor block and produces all allocated
 *   LLC Host queue receive buffers.
 *
 * Return Codes:
 *   Return 0 on success or -ENOMEM if buffer allocation failed (when using
 *   dynamic buffer allocation). If the buffer allocation failed, the
 *   already allocated buffers will not be released and the caller should do
 *   this.
 *
 * Assumptions:
 *   The PDQ has been reset and the adapter and driver maintained Type 2
 *   register indices are cleared.
 *
 * Side Effects:
 *   Receive buffers are posted to the adapter LLC queue and the adapter
 *   is notified.
 */

static int dfx_rcv_init(DFX_board_t *bp, int get_buffers)
	{
	int	i, j;					/* used in for loop */

	/*
	 *  Since each receive buffer is a single fragment of same length, initialize
	 *  first longword in each receive descriptor for entire LLC Host descriptor
	 *  block.  Also initialize second longword in each receive descriptor with
	 *  physical address of receive buffer.  We'll always allocate receive
	 *  buffers in powers of 2 so that we can easily fill the 256 entry descriptor
	 *  block and produce new receive buffers by simply updating the receive
	 *  producer index.
	 *
	 * 	Assumptions:
	 *		To support all shipping versions of PDQ, the receive buffer size
	 *		must be mod 128 in length and the physical address must be 128 byte
	 *		aligned.  In other words, bits 0-6 of the length and address must
	 *		be zero for the following descriptor field entries to be correct on
	 *		all PDQ-based boards.  We guaranteed both requirements during
	 *		driver initialization when we allocated memory for the receive buffers.
	 */

	if (get_buffers) {
#ifdef DYNAMIC_BUFFERS
	for (i = 0; i < (int)(bp->rcv_bufs_to_post); i++)
		for (j = 0; (i + j) < (int)PI_RCV_DATA_K_NUM_ENTRIES; j += bp->rcv_bufs_to_post)
		{
			struct sk_buff *newskb = __dev_alloc_skb(NEW_SKB_SIZE, GFP_NOIO);
			if (!newskb)
				return -ENOMEM;
			bp->descr_block_virt->rcv_data[i+j].long_0 = (u32) (PI_RCV_DESCR_M_SOP |
				((PI_RCV_DATA_K_SIZE_MAX / PI_ALIGN_K_RCV_DATA_BUFF) << PI_RCV_DESCR_V_SEG_LEN));
			/*
			 * align to 128 bytes for compatibility with
			 * the old EISA boards.
			 */
2947

L
Linus Torvalds 已提交
2948 2949
			my_skb_align(newskb, 128);
			bp->descr_block_virt->rcv_data[i + j].long_1 =
2950
				(u32)dma_map_single(bp->bus_dev, newskb->data,
L
Linus Torvalds 已提交
2951
						    NEW_SKB_SIZE,
2952
						    DMA_FROM_DEVICE);
L
Linus Torvalds 已提交
2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977
			/*
			 * p_rcv_buff_va is only used inside the
			 * kernel so we put the skb pointer here.
			 */
			bp->p_rcv_buff_va[i+j] = (char *) newskb;
		}
#else
	for (i=0; i < (int)(bp->rcv_bufs_to_post); i++)
		for (j=0; (i + j) < (int)PI_RCV_DATA_K_NUM_ENTRIES; j += bp->rcv_bufs_to_post)
			{
			bp->descr_block_virt->rcv_data[i+j].long_0 = (u32) (PI_RCV_DESCR_M_SOP |
				((PI_RCV_DATA_K_SIZE_MAX / PI_ALIGN_K_RCV_DATA_BUFF) << PI_RCV_DESCR_V_SEG_LEN));
			bp->descr_block_virt->rcv_data[i+j].long_1 = (u32) (bp->rcv_block_phys + (i * PI_RCV_DATA_K_SIZE_MAX));
			bp->p_rcv_buff_va[i+j] = (char *) (bp->rcv_block_virt + (i * PI_RCV_DATA_K_SIZE_MAX));
			}
#endif
	}

	/* Update receive producer and Type 2 register */

	bp->rcv_xmt_reg.index.rcv_prod = bp->rcv_bufs_to_post;
	dfx_port_write_long(bp, PI_PDQ_K_REG_TYPE_2_PROD, bp->rcv_xmt_reg.lword);
	return 0;
	}

2978

L
Linus Torvalds 已提交
2979 2980 2981 2982
/*
 * =========================
 * = dfx_rcv_queue_process =
 * =========================
2983
 *
L
Linus Torvalds 已提交
2984 2985
 * Overview:
 *   Process received LLC frames.
2986
 *
L
Linus Torvalds 已提交
2987 2988
 * Returns:
 *   None
2989
 *
L
Linus Torvalds 已提交
2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062
 * Arguments:
 *   bp - pointer to board information
 *
 * Functional Description:
 *   Received LLC frames are processed until there are no more consumed frames.
 *   Once all frames are processed, the receive buffers are returned to the
 *   adapter.  Note that this algorithm fixes the length of time that can be spent
 *   in this routine, because there are a fixed number of receive buffers to
 *   process and buffers are not produced until this routine exits and returns
 *   to the ISR.
 *
 * Return Codes:
 *   None
 *
 * Assumptions:
 *   None
 *
 * Side Effects:
 *   None
 */

static void dfx_rcv_queue_process(
	DFX_board_t *bp
	)

	{
	PI_TYPE_2_CONSUMER	*p_type_2_cons;		/* ptr to rcv/xmt consumer block register */
	char				*p_buff;			/* ptr to start of packet receive buffer (FMC descriptor) */
	u32					descr, pkt_len;		/* FMC descriptor field and packet length */
	struct sk_buff		*skb;				/* pointer to a sk_buff to hold incoming packet data */

	/* Service all consumed LLC receive frames */

	p_type_2_cons = (PI_TYPE_2_CONSUMER *)(&bp->cons_block_virt->xmt_rcv_data);
	while (bp->rcv_xmt_reg.index.rcv_comp != p_type_2_cons->index.rcv_cons)
		{
		/* Process any errors */

		int entry;

		entry = bp->rcv_xmt_reg.index.rcv_comp;
#ifdef DYNAMIC_BUFFERS
		p_buff = (char *) (((struct sk_buff *)bp->p_rcv_buff_va[entry])->data);
#else
		p_buff = (char *) bp->p_rcv_buff_va[entry];
#endif
		memcpy(&descr, p_buff + RCV_BUFF_K_DESCR, sizeof(u32));

		if (descr & PI_FMC_DESCR_M_RCC_FLUSH)
			{
			if (descr & PI_FMC_DESCR_M_RCC_CRC)
				bp->rcv_crc_errors++;
			else
				bp->rcv_frame_status_errors++;
			}
		else
		{
			int rx_in_place = 0;

			/* The frame was received without errors - verify packet length */

			pkt_len = (u32)((descr & PI_FMC_DESCR_M_LEN) >> PI_FMC_DESCR_V_LEN);
			pkt_len -= 4;				/* subtract 4 byte CRC */
			if (!IN_RANGE(pkt_len, FDDI_K_LLC_ZLEN, FDDI_K_LLC_LEN))
				bp->rcv_length_errors++;
			else{
#ifdef DYNAMIC_BUFFERS
				if (pkt_len > SKBUFF_RX_COPYBREAK) {
					struct sk_buff *newskb;

					newskb = dev_alloc_skb(NEW_SKB_SIZE);
					if (newskb){
						rx_in_place = 1;
3063

L
Linus Torvalds 已提交
3064 3065
						my_skb_align(newskb, 128);
						skb = (struct sk_buff *)bp->p_rcv_buff_va[entry];
3066
						dma_unmap_single(bp->bus_dev,
L
Linus Torvalds 已提交
3067 3068
							bp->descr_block_virt->rcv_data[entry].long_1,
							NEW_SKB_SIZE,
3069
							DMA_FROM_DEVICE);
L
Linus Torvalds 已提交
3070 3071 3072
						skb_reserve(skb, RCV_BUFF_K_PADDING);
						bp->p_rcv_buff_va[entry] = (char *)newskb;
						bp->descr_block_virt->rcv_data[entry].long_1 =
3073
							(u32)dma_map_single(bp->bus_dev,
L
Linus Torvalds 已提交
3074 3075
								newskb->data,
								NEW_SKB_SIZE,
3076
								DMA_FROM_DEVICE);
L
Linus Torvalds 已提交
3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094
					} else
						skb = NULL;
				} else
#endif
					skb = dev_alloc_skb(pkt_len+3);	/* alloc new buffer to pass up, add room for PRH */
				if (skb == NULL)
					{
					printk("%s: Could not allocate receive buffer.  Dropping packet.\n", bp->dev->name);
					bp->rcv_discards++;
					break;
					}
				else {
#ifndef DYNAMIC_BUFFERS
					if (! rx_in_place)
#endif
					{
						/* Receive buffer allocated, pass receive packet up */

3095 3096 3097
						skb_copy_to_linear_data(skb,
							       p_buff + RCV_BUFF_K_PADDING,
							       pkt_len + 3);
L
Linus Torvalds 已提交
3098
					}
3099

L
Linus Torvalds 已提交
3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127
					skb_reserve(skb,3);		/* adjust data field so that it points to FC byte */
					skb_put(skb, pkt_len);		/* pass up packet length, NOT including CRC */
					skb->protocol = fddi_type_trans(skb, bp->dev);
					bp->rcv_total_bytes += skb->len;
					netif_rx(skb);

					/* Update the rcv counters */
					bp->dev->last_rx = jiffies;
					bp->rcv_total_frames++;
					if (*(p_buff + RCV_BUFF_K_DA) & 0x01)
						bp->rcv_multicast_frames++;
				}
			}
			}

		/*
		 * Advance the producer (for recycling) and advance the completion
		 * (for servicing received frames).  Note that it is okay to
		 * advance the producer without checking that it passes the
		 * completion index because they are both advanced at the same
		 * rate.
		 */

		bp->rcv_xmt_reg.index.rcv_prod += 1;
		bp->rcv_xmt_reg.index.rcv_comp += 1;
		}
	}

3128

L
Linus Torvalds 已提交
3129 3130 3131 3132
/*
 * =====================
 * = dfx_xmt_queue_pkt =
 * =====================
3133
 *
L
Linus Torvalds 已提交
3134 3135
 * Overview:
 *   Queues packets for transmission
3136
 *
L
Linus Torvalds 已提交
3137 3138
 * Returns:
 *   Condition code
3139
 *
L
Linus Torvalds 已提交
3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195
 * Arguments:
 *   skb - pointer to sk_buff to queue for transmission
 *   dev - pointer to device information
 *
 * Functional Description:
 *   Here we assume that an incoming skb transmit request
 *   is contained in a single physically contiguous buffer
 *   in which the virtual address of the start of packet
 *   (skb->data) can be converted to a physical address
 *   by using pci_map_single().
 *
 *   Since the adapter architecture requires a three byte
 *   packet request header to prepend the start of packet,
 *   we'll write the three byte field immediately prior to
 *   the FC byte.  This assumption is valid because we've
 *   ensured that dev->hard_header_len includes three pad
 *   bytes.  By posting a single fragment to the adapter,
 *   we'll reduce the number of descriptor fetches and
 *   bus traffic needed to send the request.
 *
 *   Also, we can't free the skb until after it's been DMA'd
 *   out by the adapter, so we'll queue it in the driver and
 *   return it in dfx_xmt_done.
 *
 * Return Codes:
 *   0 - driver queued packet, link is unavailable, or skbuff was bad
 *	 1 - caller should requeue the sk_buff for later transmission
 *
 * Assumptions:
 *	 First and foremost, we assume the incoming skb pointer
 *   is NOT NULL and is pointing to a valid sk_buff structure.
 *
 *   The outgoing packet is complete, starting with the
 *   frame control byte including the last byte of data,
 *   but NOT including the 4 byte CRC.  We'll let the
 *   adapter hardware generate and append the CRC.
 *
 *   The entire packet is stored in one physically
 *   contiguous buffer which is not cached and whose
 *   32-bit physical address can be determined.
 *
 *   It's vital that this routine is NOT reentered for the
 *   same board and that the OS is not in another section of
 *   code (eg. dfx_int_common) for the same board on a
 *   different thread.
 *
 * Side Effects:
 *   None
 */

static int dfx_xmt_queue_pkt(
	struct sk_buff	*skb,
	struct net_device	*dev
	)

	{
3196
	DFX_board_t		*bp = netdev_priv(dev);
L
Linus Torvalds 已提交
3197 3198 3199 3200 3201 3202
	u8			prod;				/* local transmit producer index */
	PI_XMT_DESCR		*p_xmt_descr;		/* ptr to transmit descriptor block entry */
	XMT_DRIVER_DESCR	*p_xmt_drv_descr;	/* ptr to transmit driver descriptor */
	unsigned long		flags;

	netif_stop_queue(dev);
3203

L
Linus Torvalds 已提交
3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214
	/*
	 * Verify that incoming transmit request is OK
	 *
	 * Note: The packet size check is consistent with other
	 *		 Linux device drivers, although the correct packet
	 *		 size should be verified before calling the
	 *		 transmit routine.
	 */

	if (!IN_RANGE(skb->len, FDDI_K_LLC_ZLEN, FDDI_K_LLC_LEN))
	{
3215
		printk("%s: Invalid packet length - %u bytes\n",
L
Linus Torvalds 已提交
3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247
			dev->name, skb->len);
		bp->xmt_length_errors++;		/* bump error counter */
		netif_wake_queue(dev);
		dev_kfree_skb(skb);
		return(0);				/* return "success" */
	}
	/*
	 * See if adapter link is available, if not, free buffer
	 *
	 * Note: If the link isn't available, free buffer and return 0
	 *		 rather than tell the upper layer to requeue the packet.
	 *		 The methodology here is that by the time the link
	 *		 becomes available, the packet to be sent will be
	 *		 fairly stale.  By simply dropping the packet, the
	 *		 higher layer protocols will eventually time out
	 *		 waiting for response packets which it won't receive.
	 */

	if (bp->link_available == PI_K_FALSE)
		{
		if (dfx_hw_adap_state_rd(bp) == PI_STATE_K_LINK_AVAIL)	/* is link really available? */
			bp->link_available = PI_K_TRUE;		/* if so, set flag and continue */
		else
			{
			bp->xmt_discards++;					/* bump error counter */
			dev_kfree_skb(skb);		/* free sk_buff now */
			netif_wake_queue(dev);
			return(0);							/* return "success" */
			}
		}

	spin_lock_irqsave(&bp->lock, flags);
3248

L
Linus Torvalds 已提交
3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301
	/* Get the current producer and the next free xmt data descriptor */

	prod		= bp->rcv_xmt_reg.index.xmt_prod;
	p_xmt_descr = &(bp->descr_block_virt->xmt_data[prod]);

	/*
	 * Get pointer to auxiliary queue entry to contain information
	 * for this packet.
	 *
	 * Note: The current xmt producer index will become the
	 *	 current xmt completion index when we complete this
	 *	 packet later on.  So, we'll get the pointer to the
	 *	 next auxiliary queue entry now before we bump the
	 *	 producer index.
	 */

	p_xmt_drv_descr = &(bp->xmt_drv_descr_blk[prod++]);	/* also bump producer index */

	/* Write the three PRH bytes immediately before the FC byte */

	skb_push(skb,3);
	skb->data[0] = DFX_PRH0_BYTE;	/* these byte values are defined */
	skb->data[1] = DFX_PRH1_BYTE;	/* in the Motorola FDDI MAC chip */
	skb->data[2] = DFX_PRH2_BYTE;	/* specification */

	/*
	 * Write the descriptor with buffer info and bump producer
	 *
	 * Note: Since we need to start DMA from the packet request
	 *		 header, we'll add 3 bytes to the DMA buffer length,
	 *		 and we'll determine the physical address of the
	 *		 buffer from the PRH, not skb->data.
	 *
	 * Assumptions:
	 *		 1. Packet starts with the frame control (FC) byte
	 *		    at skb->data.
	 *		 2. The 4-byte CRC is not appended to the buffer or
	 *			included in the length.
	 *		 3. Packet length (skb->len) is from FC to end of
	 *			data, inclusive.
	 *		 4. The packet length does not exceed the maximum
	 *			FDDI LLC frame length of 4491 bytes.
	 *		 5. The entire packet is contained in a physically
	 *			contiguous, non-cached, locked memory space
	 *			comprised of a single buffer pointed to by
	 *			skb->data.
	 *		 6. The physical address of the start of packet
	 *			can be determined from the virtual address
	 *			by using pci_map_single() and is only 32-bits
	 *			wide.
	 */

	p_xmt_descr->long_0	= (u32) (PI_XMT_DESCR_M_SOP | PI_XMT_DESCR_M_EOP | ((skb->len) << PI_XMT_DESCR_V_SEG_LEN));
3302 3303
	p_xmt_descr->long_1 = (u32)dma_map_single(bp->bus_dev, skb->data,
						  skb->len, DMA_TO_DEVICE);
L
Linus Torvalds 已提交
3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349

	/*
	 * Verify that descriptor is actually available
	 *
	 * Note: If descriptor isn't available, return 1 which tells
	 *	 the upper layer to requeue the packet for later
	 *	 transmission.
	 *
	 *       We need to ensure that the producer never reaches the
	 *	 completion, except to indicate that the queue is empty.
	 */

	if (prod == bp->rcv_xmt_reg.index.xmt_comp)
	{
		skb_pull(skb,3);
		spin_unlock_irqrestore(&bp->lock, flags);
		return(1);			/* requeue packet for later */
	}

	/*
	 * Save info for this packet for xmt done indication routine
	 *
	 * Normally, we'd save the producer index in the p_xmt_drv_descr
	 * structure so that we'd have it handy when we complete this
	 * packet later (in dfx_xmt_done).  However, since the current
	 * transmit architecture guarantees a single fragment for the
	 * entire packet, we can simply bump the completion index by
	 * one (1) for each completed packet.
	 *
	 * Note: If this assumption changes and we're presented with
	 *	 an inconsistent number of transmit fragments for packet
	 *	 data, we'll need to modify this code to save the current
	 *	 transmit producer index.
	 */

	p_xmt_drv_descr->p_skb = skb;

	/* Update Type 2 register */

	bp->rcv_xmt_reg.index.xmt_prod = prod;
	dfx_port_write_long(bp, PI_PDQ_K_REG_TYPE_2_PROD, bp->rcv_xmt_reg.lword);
	spin_unlock_irqrestore(&bp->lock, flags);
	netif_wake_queue(dev);
	return(0);							/* packet queued to adapter */
	}

3350

L
Linus Torvalds 已提交
3351 3352 3353 3354
/*
 * ================
 * = dfx_xmt_done =
 * ================
3355
 *
L
Linus Torvalds 已提交
3356 3357
 * Overview:
 *   Processes all frames that have been transmitted.
3358
 *
L
Linus Torvalds 已提交
3359 3360
 * Returns:
 *   None
3361
 *
L
Linus Torvalds 已提交
3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405
 * Arguments:
 *   bp - pointer to board information
 *
 * Functional Description:
 *   For all consumed transmit descriptors that have not
 *   yet been completed, we'll free the skb we were holding
 *   onto using dev_kfree_skb and bump the appropriate
 *   counters.
 *
 * Return Codes:
 *   None
 *
 * Assumptions:
 *   The Type 2 register is not updated in this routine.  It is
 *   assumed that it will be updated in the ISR when dfx_xmt_done
 *   returns.
 *
 * Side Effects:
 *   None
 */

static int dfx_xmt_done(DFX_board_t *bp)
	{
	XMT_DRIVER_DESCR	*p_xmt_drv_descr;	/* ptr to transmit driver descriptor */
	PI_TYPE_2_CONSUMER	*p_type_2_cons;		/* ptr to rcv/xmt consumer block register */
	u8			comp;			/* local transmit completion index */
	int 			freed = 0;		/* buffers freed */

	/* Service all consumed transmit frames */

	p_type_2_cons = (PI_TYPE_2_CONSUMER *)(&bp->cons_block_virt->xmt_rcv_data);
	while (bp->rcv_xmt_reg.index.xmt_comp != p_type_2_cons->index.xmt_cons)
		{
		/* Get pointer to the transmit driver descriptor block information */

		p_xmt_drv_descr = &(bp->xmt_drv_descr_blk[bp->rcv_xmt_reg.index.xmt_comp]);

		/* Increment transmit counters */

		bp->xmt_total_frames++;
		bp->xmt_total_bytes += p_xmt_drv_descr->p_skb->len;

		/* Return skb to operating system */
		comp = bp->rcv_xmt_reg.index.xmt_comp;
3406
		dma_unmap_single(bp->bus_dev,
L
Linus Torvalds 已提交
3407 3408
				 bp->descr_block_virt->xmt_data[comp].long_1,
				 p_xmt_drv_descr->p_skb->len,
3409
				 DMA_TO_DEVICE);
L
Linus Torvalds 已提交
3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428
		dev_kfree_skb_irq(p_xmt_drv_descr->p_skb);

		/*
		 * Move to start of next packet by updating completion index
		 *
		 * Here we assume that a transmit packet request is always
		 * serviced by posting one fragment.  We can therefore
		 * simplify the completion code by incrementing the
		 * completion index by one.  This code will need to be
		 * modified if this assumption changes.  See comments
		 * in dfx_xmt_queue_pkt for more details.
		 */

		bp->rcv_xmt_reg.index.xmt_comp += 1;
		freed++;
		}
	return freed;
	}

3429

L
Linus Torvalds 已提交
3430 3431 3432 3433
/*
 * =================
 * = dfx_rcv_flush =
 * =================
3434
 *
L
Linus Torvalds 已提交
3435 3436
 * Overview:
 *   Remove all skb's in the receive ring.
3437
 *
L
Linus Torvalds 已提交
3438 3439
 * Returns:
 *   None
3440
 *
L
Linus Torvalds 已提交
3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481
 * Arguments:
 *   bp - pointer to board information
 *
 * Functional Description:
 *   Free's all the dynamically allocated skb's that are
 *   currently attached to the device receive ring. This
 *   function is typically only used when the device is
 *   initialized or reinitialized.
 *
 * Return Codes:
 *   None
 *
 * Side Effects:
 *   None
 */
#ifdef DYNAMIC_BUFFERS
static void dfx_rcv_flush( DFX_board_t *bp )
	{
	int i, j;

	for (i = 0; i < (int)(bp->rcv_bufs_to_post); i++)
		for (j = 0; (i + j) < (int)PI_RCV_DATA_K_NUM_ENTRIES; j += bp->rcv_bufs_to_post)
		{
			struct sk_buff *skb;
			skb = (struct sk_buff *)bp->p_rcv_buff_va[i+j];
			if (skb)
				dev_kfree_skb(skb);
			bp->p_rcv_buff_va[i+j] = NULL;
		}

	}
#else
static inline void dfx_rcv_flush( DFX_board_t *bp )
{
}
#endif /* DYNAMIC_BUFFERS */

/*
 * =================
 * = dfx_xmt_flush =
 * =================
3482
 *
L
Linus Torvalds 已提交
3483 3484 3485
 * Overview:
 *   Processes all frames whether they've been transmitted
 *   or not.
3486
 *
L
Linus Torvalds 已提交
3487 3488
 * Returns:
 *   None
3489
 *
L
Linus Torvalds 已提交
3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529
 * Arguments:
 *   bp - pointer to board information
 *
 * Functional Description:
 *   For all produced transmit descriptors that have not
 *   yet been completed, we'll free the skb we were holding
 *   onto using dev_kfree_skb and bump the appropriate
 *   counters.  Of course, it's possible that some of
 *   these transmit requests actually did go out, but we
 *   won't make that distinction here.  Finally, we'll
 *   update the consumer index to match the producer.
 *
 * Return Codes:
 *   None
 *
 * Assumptions:
 *   This routine does NOT update the Type 2 register.  It
 *   is assumed that this routine is being called during a
 *   transmit flush interrupt, or a shutdown or close routine.
 *
 * Side Effects:
 *   None
 */

static void dfx_xmt_flush( DFX_board_t *bp )
	{
	u32			prod_cons;		/* rcv/xmt consumer block longword */
	XMT_DRIVER_DESCR	*p_xmt_drv_descr;	/* ptr to transmit driver descriptor */
	u8			comp;			/* local transmit completion index */

	/* Flush all outstanding transmit frames */

	while (bp->rcv_xmt_reg.index.xmt_comp != bp->rcv_xmt_reg.index.xmt_prod)
		{
		/* Get pointer to the transmit driver descriptor block information */

		p_xmt_drv_descr = &(bp->xmt_drv_descr_blk[bp->rcv_xmt_reg.index.xmt_comp]);

		/* Return skb to operating system */
		comp = bp->rcv_xmt_reg.index.xmt_comp;
3530
		dma_unmap_single(bp->bus_dev,
L
Linus Torvalds 已提交
3531 3532
				 bp->descr_block_virt->xmt_data[comp].long_1,
				 p_xmt_drv_descr->p_skb->len,
3533
				 DMA_TO_DEVICE);
L
Linus Torvalds 已提交
3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560
		dev_kfree_skb(p_xmt_drv_descr->p_skb);

		/* Increment transmit error counter */

		bp->xmt_discards++;

		/*
		 * Move to start of next packet by updating completion index
		 *
		 * Here we assume that a transmit packet request is always
		 * serviced by posting one fragment.  We can therefore
		 * simplify the completion code by incrementing the
		 * completion index by one.  This code will need to be
		 * modified if this assumption changes.  See comments
		 * in dfx_xmt_queue_pkt for more details.
		 */

		bp->rcv_xmt_reg.index.xmt_comp += 1;
		}

	/* Update the transmit consumer index in the consumer block */

	prod_cons = (u32)(bp->cons_block_virt->xmt_rcv_data & ~PI_CONS_M_XMT_INDEX);
	prod_cons |= (u32)(bp->rcv_xmt_reg.index.xmt_prod << PI_CONS_V_XMT_INDEX);
	bp->cons_block_virt->xmt_rcv_data = prod_cons;
	}

3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587
/*
 * ==================
 * = dfx_unregister =
 * ==================
 *
 * Overview:
 *   Shuts down an FDDI controller
 *
 * Returns:
 *   Condition code
 *
 * Arguments:
 *   bdev - pointer to device information
 *
 * Functional Description:
 *
 * Return Codes:
 *   None
 *
 * Assumptions:
 *   It compiles so it should work :-( (PCI cards do :-)
 *
 * Side Effects:
 *   Device structures for FDDI adapters (fddi0, fddi1, etc) are
 *   freed.
 */
static void __devexit dfx_unregister(struct device *bdev)
L
Linus Torvalds 已提交
3588
{
3589 3590 3591 3592 3593 3594 3595
	struct net_device *dev = dev_get_drvdata(bdev);
	DFX_board_t *bp = netdev_priv(dev);
	int dfx_bus_pci = DFX_BUS_PCI(bdev);
	int dfx_bus_tc = DFX_BUS_TC(bdev);
	int dfx_use_mmio = DFX_MMIO || dfx_bus_tc;
	resource_size_t bar_start = 0;		/* pointer to port */
	resource_size_t bar_len = 0;		/* resource length */
L
Linus Torvalds 已提交
3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607
	int		alloc_size;		/* total buffer size used */

	unregister_netdev(dev);

	alloc_size = sizeof(PI_DESCR_BLOCK) +
		     PI_CMD_REQ_K_SIZE_MAX + PI_CMD_RSP_K_SIZE_MAX +
#ifndef DYNAMIC_BUFFERS
		     (bp->rcv_bufs_to_post * PI_RCV_DATA_K_SIZE_MAX) +
#endif
		     sizeof(PI_CONSUMER_BLOCK) +
		     (PI_ALIGN_K_DESC_BLK - 1);
	if (bp->kmalloced)
3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622
		dma_free_coherent(bdev, alloc_size,
				  bp->kmalloced, bp->kmalloced_dma);

	dfx_bus_uninit(dev);

	dfx_get_bars(bdev, &bar_start, &bar_len);
	if (dfx_use_mmio) {
		iounmap(bp->base.mem);
		release_mem_region(bar_start, bar_len);
	} else
		release_region(bar_start, bar_len);

	if (dfx_bus_pci)
		pci_disable_device(to_pci_dev(bdev));

L
Linus Torvalds 已提交
3623 3624 3625 3626
	free_netdev(dev);
}


3627 3628
static int __devinit __unused dfx_dev_register(struct device *);
static int __devexit __unused dfx_dev_unregister(struct device *);
L
Linus Torvalds 已提交
3629

3630 3631 3632 3633 3634 3635 3636 3637
#ifdef CONFIG_PCI
static int __devinit dfx_pci_register(struct pci_dev *,
				      const struct pci_device_id *);
static void __devexit dfx_pci_unregister(struct pci_dev *);

static struct pci_device_id dfx_pci_table[] = {
	{ PCI_DEVICE(PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_FDDI) },
	{ }
L
Linus Torvalds 已提交
3638
};
3639
MODULE_DEVICE_TABLE(pci, dfx_pci_table);
L
Linus Torvalds 已提交
3640

3641
static struct pci_driver dfx_pci_driver = {
L
Linus Torvalds 已提交
3642
	.name		= "defxx",
3643 3644 3645
	.id_table	= dfx_pci_table,
	.probe		= dfx_pci_register,
	.remove		= __devexit_p(dfx_pci_unregister),
L
Linus Torvalds 已提交
3646 3647
};

3648 3649 3650 3651 3652
static __devinit int dfx_pci_register(struct pci_dev *pdev,
				      const struct pci_device_id *ent)
{
	return dfx_register(&pdev->dev);
}
L
Linus Torvalds 已提交
3653

3654
static void __devexit dfx_pci_unregister(struct pci_dev *pdev)
L
Linus Torvalds 已提交
3655
{
3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700
	dfx_unregister(&pdev->dev);
}
#endif /* CONFIG_PCI */

#ifdef CONFIG_EISA
static struct eisa_device_id dfx_eisa_table[] = {
        { "DEC3001", DEFEA_PROD_ID_1 },
        { "DEC3002", DEFEA_PROD_ID_2 },
        { "DEC3003", DEFEA_PROD_ID_3 },
        { "DEC3004", DEFEA_PROD_ID_4 },
        { }
};
MODULE_DEVICE_TABLE(eisa, dfx_eisa_table);

static struct eisa_driver dfx_eisa_driver = {
	.id_table	= dfx_eisa_table,
	.driver		= {
		.name	= "defxx",
		.bus	= &eisa_bus_type,
		.probe	= dfx_dev_register,
		.remove	= __devexit_p(dfx_dev_unregister),
	},
};
#endif /* CONFIG_EISA */

#ifdef CONFIG_TC
static struct tc_device_id const dfx_tc_table[] = {
	{ "DEC     ", "PMAF-FA " },
	{ "DEC     ", "PMAF-FD " },
	{ "DEC     ", "PMAF-FS " },
	{ "DEC     ", "PMAF-FU " },
	{ }
};
MODULE_DEVICE_TABLE(tc, dfx_tc_table);

static struct tc_driver dfx_tc_driver = {
	.id_table	= dfx_tc_table,
	.driver		= {
		.name	= "defxx",
		.bus	= &tc_bus_type,
		.probe	= dfx_dev_register,
		.remove	= __devexit_p(dfx_dev_unregister),
	},
};
#endif /* CONFIG_TC */
L
Linus Torvalds 已提交
3701

3702 3703 3704
static int __devinit __unused dfx_dev_register(struct device *dev)
{
	int status;
L
Linus Torvalds 已提交
3705

3706 3707 3708 3709
	status = dfx_register(dev);
	if (!status)
		get_device(dev);
	return status;
L
Linus Torvalds 已提交
3710 3711
}

3712
static int __devexit __unused dfx_dev_unregister(struct device *dev)
L
Linus Torvalds 已提交
3713
{
3714 3715 3716 3717
	put_device(dev);
	dfx_unregister(dev);
	return 0;
}
3718

L
Linus Torvalds 已提交
3719

3720 3721 3722 3723 3724 3725 3726 3727 3728 3729
static int __devinit dfx_init(void)
{
	int status;

	status = pci_register_driver(&dfx_pci_driver);
	if (!status)
		status = eisa_driver_register(&dfx_eisa_driver);
	if (!status)
		status = tc_register_driver(&dfx_tc_driver);
	return status;
L
Linus Torvalds 已提交
3730 3731
}

3732
static void __devexit dfx_cleanup(void)
L
Linus Torvalds 已提交
3733
{
3734 3735 3736
	tc_unregister_driver(&dfx_tc_driver);
	eisa_driver_unregister(&dfx_eisa_driver);
	pci_unregister_driver(&dfx_pci_driver);
3737
}
L
Linus Torvalds 已提交
3738 3739 3740 3741

module_init(dfx_init);
module_exit(dfx_cleanup);
MODULE_AUTHOR("Lawrence V. Stefani");
3742
MODULE_DESCRIPTION("DEC FDDIcontroller TC/EISA/PCI (DEFTA/DEFEA/DEFPA) driver "
L
Linus Torvalds 已提交
3743 3744 3745
		   DRV_VERSION " " DRV_RELDATE);
MODULE_LICENSE("GPL");

3746

L
Linus Torvalds 已提交
3747 3748 3749 3750 3751
/*
 * Local variables:
 * kernel-compile-command: "gcc -D__KERNEL__ -I/root/linux/include -Wall -Wstrict-prototypes -O2 -pipe -fomit-frame-pointer -fno-strength-reduce -m486 -malign-loops=2 -malign-jumps=2 -malign-functions=2 -c defxx.c"
 * End:
 */