net: atm: remove support for Fujitsu FireStream ATM devices

This driver received nothing but automated fixes (mostly spelling
and compiler warnings) since git era begun. Since it's using
virt_to_bus it's unlikely to be used on any modern platform.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 2057 deletions

diff --git a/drivers/atm/firestream.c b/drivers/atm/firestream.c
deleted file mode 100644
index 4f67404fe64c..000000000000
--- a/drivers/atm/firestream.c
+++ /dev/null
@@ -1,2057 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-/* drivers/atm/firestream.c - FireStream 155 (MB86697) and
- *                            FireStream  50 (MB86695) device driver 
- */
- 
-/* Written & (C) 2000 by R.E.Wolff@BitWizard.nl 
- * Copied snippets from zatm.c by Werner Almesberger, EPFL LRC/ICA 
- * and ambassador.c Copyright (C) 1995-1999  Madge Networks Ltd 
- */
-
-/*
-*/
-
-
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/pci.h>
-#include <linux/poison.h>
-#include <linux/errno.h>
-#include <linux/atm.h>
-#include <linux/atmdev.h>
-#include <linux/sonet.h>
-#include <linux/skbuff.h>
-#include <linux/netdevice.h>
-#include <linux/delay.h>
-#include <linux/ioport.h> /* for request_region */
-#include <linux/uio.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/capability.h>
-#include <linux/bitops.h>
-#include <linux/slab.h>
-#include <asm/byteorder.h>
-#include <asm/string.h>
-#include <asm/io.h>
-#include <linux/atomic.h>
-#include <linux/uaccess.h>
-#include <linux/wait.h>
-
-#include "firestream.h"
-
-static int loopback = 0;
-static int num=0x5a;
-
-/* According to measurements (but they look suspicious to me!) done in
- * '97, 37% of the packets are one cell in size. So it pays to have
- * buffers allocated at that size. A large jump in percentage of
- * packets occurs at packets around 536 bytes in length. So it also
- * pays to have those pre-allocated. Unfortunately, we can't fully
- * take advantage of this as the majority of the packets is likely to
- * be TCP/IP (As where obviously the measurement comes from) There the
- * link would be opened with say a 1500 byte MTU, and we can't handle
- * smaller buffers more efficiently than the larger ones. -- REW
- */
-
-/* Due to the way Linux memory management works, specifying "576" as
- * an allocation size here isn't going to help. They are allocated
- * from 1024-byte regions anyway. With the size of the sk_buffs (quite
- * large), it doesn't pay to allocate the smallest size (64) -- REW */
-
-/* This is all guesswork. Hard numbers to back this up or disprove this, 
- * are appreciated. -- REW */
-
-/* The last entry should be about 64k. However, the "buffer size" is
- * passed to the chip in a 16 bit field. I don't know how "65536"
- * would be interpreted. -- REW */
-
-#define NP FS_NR_FREE_POOLS
-static int rx_buf_sizes[NP]  = {128,  256,  512, 1024, 2048, 4096, 16384, 65520};
-/* log2:                 7     8     9    10    11    12    14     16 */
-
-#if 0
-static int rx_pool_sizes[NP] = {1024, 1024, 512, 256,  128,  64,   32,    32};
-#else
-/* debug */
-static int rx_pool_sizes[NP] = {128,  128,  128, 64,   64,   64,   32,    32};
-#endif
-/* log2:                 10    10    9    8     7     6     5      5  */
-/* sumlog2:              17    18    18   18    18    18    19     21 */
-/* mem allocated:        128k  256k  256k 256k  256k  256k  512k   2M */
-/* tot mem: almost 4M */
-
-/* NP is shorter, so that it fits on a single line. */
-#undef NP
-
-
-/* Small hardware gotcha:
-
-   The FS50 CAM (VP/VC match registers) always take the lowest channel
-   number that matches. This is not a problem.
-
-   However, they also ignore whether the channel is enabled or
-   not. This means that if you allocate channel 0 to 1.2 and then
-   channel 1 to 0.0, then disabeling channel 0 and writing 0 to the
-   match channel for channel 0 will "steal" the traffic from channel
-   1, even if you correctly disable channel 0.
-
-   Workaround: 
-
-   - When disabling channels, write an invalid VP/VC value to the
-   match register. (We use 0xffffffff, which in the worst case 
-   matches VP/VC = <maxVP>/<maxVC>, but I expect it not to match
-   anything as some "when not in use, program to 0" bits are now
-   programmed to 1...)
-
-   - Don't initialize the match registers to 0, as 0.0 is a valid
-   channel.
-*/
-
-
-/* Optimization hints and tips.
-
-   The FireStream chips are very capable of reducing the amount of
-   "interrupt-traffic" for the CPU. This driver requests an interrupt on EVERY
-   action. You could try to minimize this a bit. 
-
-   Besides that, the userspace->kernel copy and the PCI bus are the
-   performance limiting issues for this driver.
-
-   You could queue up a bunch of outgoing packets without telling the
-   FireStream. I'm not sure that's going to win you much though. The
-   Linux layer won't tell us in advance when it's not going to give us
-   any more packets in a while. So this is tricky to implement right without
-   introducing extra delays. 
-  
-   -- REW
- */
-
-
-
-
-/* The strings that define what the RX queue entry is all about. */
-/* Fujitsu: Please tell me which ones can have a pointer to a 
-   freepool descriptor! */
-static char *res_strings[] = {
-	"RX OK: streaming not EOP", 
-	"RX OK: streaming EOP", 
-	"RX OK: Single buffer packet", 
-	"RX OK: packet mode", 
-	"RX OK: F4 OAM (end to end)", 
-	"RX OK: F4 OAM (Segment)", 
-	"RX OK: F5 OAM (end to end)", 
-	"RX OK: F5 OAM (Segment)", 
-	"RX OK: RM cell", 
-	"RX OK: TRANSP cell", 
-	"RX OK: TRANSPC cell", 
-	"Unmatched cell", 
-	"reserved 12", 
-	"reserved 13", 
-	"reserved 14", 
-	"Unrecognized cell", 
-	"reserved 16", 
-	"reassembly abort: AAL5 abort", 
-	"packet purged", 
-	"packet ageing timeout", 
-	"channel ageing timeout", 
-	"calculated length error", 
-	"programmed length limit error", 
-	"aal5 crc32 error", 
-	"oam transp or transpc crc10 error", 
-	"reserved 25", 
-	"reserved 26", 
-	"reserved 27", 
-	"reserved 28", 
-	"reserved 29", 
-	"reserved 30", /* FIXME: The strings between 30-40 might be wrong. */
-	"reassembly abort: no buffers", 
-	"receive buffer overflow", 
-	"change in GFC", 
-	"receive buffer full", 
-	"low priority discard - no receive descriptor", 
-	"low priority discard - missing end of packet", 
-	"reserved 37",
-	"reserved 38",
-	"reserved 39",
-	"reserved 40",
-	"reserved 41", 
-	"reserved 42", 
-	"reserved 43", 
-	"reserved 44", 
-	"reserved 45", 
-	"reserved 46", 
-	"reserved 47", 
-	"reserved 48", 
-	"reserved 49", 
-	"reserved 50", 
-	"reserved 51", 
-	"reserved 52", 
-	"reserved 53", 
-	"reserved 54", 
-	"reserved 55", 
-	"reserved 56", 
-	"reserved 57", 
-	"reserved 58", 
-	"reserved 59", 
-	"reserved 60", 
-	"reserved 61", 
-	"reserved 62", 
-	"reserved 63", 
-};  
-
-static char *irq_bitname[] = {
-	"LPCO",
-	"DPCO",
-	"RBRQ0_W",
-	"RBRQ1_W",
-	"RBRQ2_W",
-	"RBRQ3_W",
-	"RBRQ0_NF",
-	"RBRQ1_NF",
-	"RBRQ2_NF",
-	"RBRQ3_NF",
-	"BFP_SC",
-	"INIT",
-	"INIT_ERR",
-	"USCEO",
-	"UPEC0",
-	"VPFCO",
-	"CRCCO",
-	"HECO",
-	"TBRQ_W",
-	"TBRQ_NF",
-	"CTPQ_E",
-	"GFC_C0",
-	"PCI_FTL",
-	"CSQ_W",
-	"CSQ_NF",
-	"EXT_INT",
-	"RXDMA_S"
-};
-
-
-#define PHY_EOF -1
-#define PHY_CLEARALL -2
-
-struct reginit_item {
-	int reg, val;
-};
-
-
-static struct reginit_item PHY_NTC_INIT[] = {
-	{ PHY_CLEARALL, 0x40 }, 
-	{ 0x12,  0x0001 },
-	{ 0x13,  0x7605 },
-	{ 0x1A,  0x0001 },
-	{ 0x1B,  0x0005 },
-	{ 0x38,  0x0003 },
-	{ 0x39,  0x0006 },   /* changed here to make loopback */
-	{ 0x01,  0x5262 },
-	{ 0x15,  0x0213 },
-	{ 0x00,  0x0003 },
-	{ PHY_EOF, 0},    /* -1 signals end of list */
-};
-
-
-/* Safetyfeature: If the card interrupts more than this number of times
-   in a jiffy (1/100th of a second) then we just disable the interrupt and
-   print a message. This prevents the system from hanging. 
-
-   150000 packets per second is close to the limit a PC is going to have
-   anyway. We therefore have to disable this for production. -- REW */
-#undef IRQ_RATE_LIMIT // 100
-
-/* Interrupts work now. Unlike serial cards, ATM cards don't work all
-   that great without interrupts. -- REW */
-#undef FS_POLL_FREQ // 100
-
-/* 
-   This driver can spew a whole lot of debugging output at you. If you
-   need maximum performance, you should disable the DEBUG define. To
-   aid in debugging in the field, I'm leaving the compile-time debug
-   features enabled, and disable them "runtime". That allows me to
-   instruct people with problems to enable debugging without requiring
-   them to recompile... -- REW
-*/
-#define DEBUG
-
-#ifdef DEBUG
-#define fs_dprintk(f, str...) if (fs_debug & f) printk (str)
-#else
-#define fs_dprintk(f, str...) /* nothing */
-#endif
-
-
-static int fs_keystream = 0;
-
-#ifdef DEBUG
-/* I didn't forget to set this to zero before shipping. Hit me with a stick 
-   if you get this with the debug default not set to zero again. -- REW */
-static int fs_debug = 0;
-#else
-#define fs_debug 0
-#endif
-
-#ifdef MODULE
-#ifdef DEBUG 
-module_param(fs_debug, int, 0644);
-#endif
-module_param(loopback, int, 0);
-module_param(num, int, 0);
-module_param(fs_keystream, int, 0);
-/* XXX Add rx_buf_sizes, and rx_pool_sizes As per request Amar. -- REW */
-#endif
-
-
-#define FS_DEBUG_FLOW    0x00000001
-#define FS_DEBUG_OPEN    0x00000002
-#define FS_DEBUG_QUEUE   0x00000004
-#define FS_DEBUG_IRQ     0x00000008
-#define FS_DEBUG_INIT    0x00000010
-#define FS_DEBUG_SEND    0x00000020
-#define FS_DEBUG_PHY     0x00000040
-#define FS_DEBUG_CLEANUP 0x00000080
-#define FS_DEBUG_QOS     0x00000100
-#define FS_DEBUG_TXQ     0x00000200
-#define FS_DEBUG_ALLOC   0x00000400
-#define FS_DEBUG_TXMEM   0x00000800
-#define FS_DEBUG_QSIZE   0x00001000
-
-
-#define func_enter() fs_dprintk(FS_DEBUG_FLOW, "fs: enter %s\n", __func__)
-#define func_exit()  fs_dprintk(FS_DEBUG_FLOW, "fs: exit  %s\n", __func__)
-
-
-static struct fs_dev *fs_boards = NULL;
-
-#ifdef DEBUG
-
-static void my_hd (void *addr, int len)
-{
-	int j, ch;
-	unsigned char *ptr = addr;
-
-	while (len > 0) {
-		printk ("%p ", ptr);
-		for (j=0;j < ((len < 16)?len:16);j++) {
-			printk ("%02x %s", ptr[j], (j==7)?" ":"");
-		}
-		for (  ;j < 16;j++) {
-			printk ("   %s", (j==7)?" ":"");
-		}
-		for (j=0;j < ((len < 16)?len:16);j++) {
-			ch = ptr[j];
-			printk ("%c", (ch < 0x20)?'.':((ch > 0x7f)?'.':ch));
-		}
-		printk ("\n");
-		ptr += 16;
-		len -= 16;
-	}
-}
-#else /* DEBUG */
-static void my_hd (void *addr, int len){}
-#endif /* DEBUG */
-
-/********** free an skb (as per ATM device driver documentation) **********/
-
-/* Hmm. If this is ATM specific, why isn't there an ATM routine for this?
- * I copied it over from the ambassador driver. -- REW */
-
-static inline void fs_kfree_skb (struct sk_buff * skb) 
-{
-	if (ATM_SKB(skb)->vcc->pop)
-		ATM_SKB(skb)->vcc->pop (ATM_SKB(skb)->vcc, skb);
-	else
-		dev_kfree_skb_any (skb);
-}
-
-
-
-
-/* It seems the ATM forum recommends this horribly complicated 16bit
- * floating point format. Turns out the Ambassador uses the exact same
- * encoding. I just copied it over. If Mitch agrees, I'll move it over
- * to the atm_misc file or something like that. (and remove it from 
- * here and the ambassador driver) -- REW
- */
-
-/* The good thing about this format is that it is monotonic. So, 
-   a conversion routine need not be very complicated. To be able to
-   round "nearest" we need to take along a few extra bits. Lets
-   put these after 16 bits, so that we can just return the top 16
-   bits of the 32bit number as the result:
-
-   int mr (unsigned int rate, int r) 
-     {
-     int e = 16+9;
-     static int round[4]={0, 0, 0xffff, 0x8000};
-     if (!rate) return 0;
-     while (rate & 0xfc000000) {
-       rate >>= 1;
-       e++;
-     }
-     while (! (rate & 0xfe000000)) {
-       rate <<= 1;
-       e--;
-     }
-
-// Now the mantissa is in positions bit 16-25. Excepf for the "hidden 1" that's in bit 26.
-     rate &= ~0x02000000;
-// Next add in the exponent
-     rate |= e << (16+9);
-// And perform the rounding:
-     return (rate + round[r]) >> 16;
-   }
-
-   14 lines-of-code. Compare that with the 120 that the Ambassador
-   guys needed. (would be 8 lines shorter if I'd try to really reduce
-   the number of lines:
-
-   int mr (unsigned int rate, int r) 
-   {
-     int e = 16+9;
-     static int round[4]={0, 0, 0xffff, 0x8000};
-     if (!rate) return 0;
-     for (;  rate & 0xfc000000 ;rate >>= 1, e++);
-     for (;!(rate & 0xfe000000);rate <<= 1, e--);
-     return ((rate & ~0x02000000) | (e << (16+9)) + round[r]) >> 16;
-   }
-
-   Exercise for the reader: Remove one more line-of-code, without
-   cheating. (Just joining two lines is cheating). (I know it's
-   possible, don't think you've beat me if you found it... If you
-   manage to lose two lines or more, keep me updated! ;-)
-
-   -- REW */
-
-
-#define ROUND_UP      1
-#define ROUND_DOWN    2
-#define ROUND_NEAREST 3
-/********** make rate (not quite as much fun as Horizon) **********/
-
-static int make_rate(unsigned int rate, int r,
-		      u16 *bits, unsigned int *actual)
-{
-	unsigned char exp = -1; /* hush gcc */
-	unsigned int man = -1;  /* hush gcc */
-  
-	fs_dprintk (FS_DEBUG_QOS, "make_rate %u", rate);
-  
-	/* rates in cells per second, ITU format (nasty 16-bit floating-point)
-	   given 5-bit e and 9-bit m:
-	   rate = EITHER (1+m/2^9)*2^e    OR 0
-	   bits = EITHER 1<<14 | e<<9 | m OR 0
-	   (bit 15 is "reserved", bit 14 "non-zero")
-	   smallest rate is 0 (special representation)
-	   largest rate is (1+511/512)*2^31 = 4290772992 (< 2^32-1)
-	   smallest non-zero rate is (1+0/512)*2^0 = 1 (> 0)
-	   simple algorithm:
-	   find position of top bit, this gives e
-	   remove top bit and shift (rounding if feeling clever) by 9-e
-	*/
-	/* Ambassador ucode bug: please don't set bit 14! so 0 rate not
-	   representable. // This should move into the ambassador driver
-	   when properly merged. -- REW */
-  
-	if (rate > 0xffc00000U) {
-		/* larger than largest representable rate */
-    
-		if (r == ROUND_UP) {
-			return -EINVAL;
-		} else {
-			exp = 31;
-			man = 511;
-		}
-    
-	} else if (rate) {
-		/* representable rate */
-    
-		exp = 31;
-		man = rate;
-    
-		/* invariant: rate = man*2^(exp-31) */
-		while (!(man & (1<<31))) {
-			exp = exp - 1;
-			man = man<<1;
-		}
-    
-		/* man has top bit set
-		   rate = (2^31+(man-2^31))*2^(exp-31)
-		   rate = (1+(man-2^31)/2^31)*2^exp 
-		*/
-		man = man<<1;
-		man &= 0xffffffffU; /* a nop on 32-bit systems */
-		/* rate = (1+man/2^32)*2^exp
-    
-		   exp is in the range 0 to 31, man is in the range 0 to 2^32-1
-		   time to lose significance... we want m in the range 0 to 2^9-1
-		   rounding presents a minor problem... we first decide which way
-		   we are rounding (based on given rounding direction and possibly
-		   the bits of the mantissa that are to be discarded).
-		*/
-
-		switch (r) {
-		case ROUND_DOWN: {
-			/* just truncate */
-			man = man>>(32-9);
-			break;
-		}
-		case ROUND_UP: {
-			/* check all bits that we are discarding */
-			if (man & (~0U>>9)) {
-				man = (man>>(32-9)) + 1;
-				if (man == (1<<9)) {
-					/* no need to check for round up outside of range */
-					man = 0;
-					exp += 1;
-				}
-			} else {
-				man = (man>>(32-9));
-			}
-			break;
-		}
-		case ROUND_NEAREST: {
-			/* check msb that we are discarding */
-			if (man & (1<<(32-9-1))) {
-				man = (man>>(32-9)) + 1;
-				if (man == (1<<9)) {
-					/* no need to check for round up outside of range */
-					man = 0;
-					exp += 1;
-				}
-			} else {
-				man = (man>>(32-9));
-			}
-			break;
-		}
-		}
-    
-	} else {
-		/* zero rate - not representable */
-    
-		if (r == ROUND_DOWN) {
-			return -EINVAL;
-		} else {
-			exp = 0;
-			man = 0;
-		}
-	}
-  
-	fs_dprintk (FS_DEBUG_QOS, "rate: man=%u, exp=%hu", man, exp);
-  
-	if (bits)
-		*bits = /* (1<<14) | */ (exp<<9) | man;
-  
-	if (actual)
-		*actual = (exp >= 9)
-			? (1 << exp) + (man << (exp-9))
-			: (1 << exp) + ((man + (1<<(9-exp-1))) >> (9-exp));
-  
-	return 0;
-}
-
-
-
-
-/* FireStream access routines */
-/* For DEEP-DOWN debugging these can be rigged to intercept accesses to
-   certain registers or to just log all accesses. */
-
-static inline void write_fs (struct fs_dev *dev, int offset, u32 val)
-{
-	writel (val, dev->base + offset);
-}
-
-
-static inline u32  read_fs (struct fs_dev *dev, int offset)
-{
-	return readl (dev->base + offset);
-}
-
-
-
-static inline struct FS_QENTRY *get_qentry (struct fs_dev *dev, struct queue *q)
-{
-	return bus_to_virt (read_fs (dev, Q_WP(q->offset)) & Q_ADDR_MASK);
-}
-
-
-static void submit_qentry (struct fs_dev *dev, struct queue *q, struct FS_QENTRY *qe)
-{
-	u32 wp;
-	struct FS_QENTRY *cqe;
-
-	/* XXX Sanity check: the write pointer can be checked to be 
-	   still the same as the value passed as qe... -- REW */
-	/*  udelay (5); */
-	while ((wp = read_fs (dev, Q_WP (q->offset))) & Q_FULL) {
-		fs_dprintk (FS_DEBUG_TXQ, "Found queue at %x full. Waiting.\n", 
-			    q->offset);
-		schedule ();
-	}
-
-	wp &= ~0xf;
-	cqe = bus_to_virt (wp);
-	if (qe != cqe) {
-		fs_dprintk (FS_DEBUG_TXQ, "q mismatch! %p %p\n", qe, cqe);
-	}
-
-	write_fs (dev, Q_WP(q->offset), Q_INCWRAP);
-
-	{
-		static int c;
-		if (!(c++ % 100))
-			{
-				int rp, wp;
-				rp =  read_fs (dev, Q_RP(q->offset));
-				wp =  read_fs (dev, Q_WP(q->offset));
-				fs_dprintk (FS_DEBUG_TXQ, "q at %d: %x-%x: %x entries.\n", 
-					    q->offset, rp, wp, wp-rp);
-			}
-	}
-}
-
-#ifdef DEBUG_EXTRA
-static struct FS_QENTRY pq[60];
-static int qp;
-
-static struct FS_BPENTRY dq[60];
-static int qd;
-static void *da[60];
-#endif 
-
-static void submit_queue (struct fs_dev *dev, struct queue *q, 
-			  u32 cmd, u32 p1, u32 p2, u32 p3)
-{
-	struct FS_QENTRY *qe;
-
-	qe = get_qentry (dev, q);
-	qe->cmd = cmd;
-	qe->p0 = p1;
-	qe->p1 = p2;
-	qe->p2 = p3;
-	submit_qentry (dev,  q, qe);
-
-#ifdef DEBUG_EXTRA
-	pq[qp].cmd = cmd;
-	pq[qp].p0 = p1;
-	pq[qp].p1 = p2;
-	pq[qp].p2 = p3;
-	qp++;
-	if (qp >= 60) qp = 0;
-#endif
-}
-
-/* Test the "other" way one day... -- REW */
-#if 1
-#define submit_command submit_queue
-#else
-
-static void submit_command (struct fs_dev *dev, struct queue *q, 
-			    u32 cmd, u32 p1, u32 p2, u32 p3)
-{
-	write_fs (dev, CMDR0, cmd);
-	write_fs (dev, CMDR1, p1);
-	write_fs (dev, CMDR2, p2);
-	write_fs (dev, CMDR3, p3);
-}
-#endif
-
-
-
-static void process_return_queue (struct fs_dev *dev, struct queue *q)
-{
-	long rq;
-	struct FS_QENTRY *qe;
-	void *tc;
-  
-	while (!((rq = read_fs (dev, Q_RP(q->offset))) & Q_EMPTY)) {
-		fs_dprintk (FS_DEBUG_QUEUE, "reaping return queue entry at %lx\n", rq); 
-		qe = bus_to_virt (rq);
-    
-		fs_dprintk (FS_DEBUG_QUEUE, "queue entry: %08x %08x %08x %08x. (%d)\n", 
-			    qe->cmd, qe->p0, qe->p1, qe->p2, STATUS_CODE (qe));
-
-		switch (STATUS_CODE (qe)) {
-		case 5:
-			tc = bus_to_virt (qe->p0);
-			fs_dprintk (FS_DEBUG_ALLOC, "Free tc: %p\n", tc);
-			kfree (tc);
-			break;
-		}
-    
-		write_fs (dev, Q_RP(q->offset), Q_INCWRAP);
-	}
-}
-
-
-static void process_txdone_queue (struct fs_dev *dev, struct queue *q)
-{
-	long rq;
-	long tmp;
-	struct FS_QENTRY *qe;
-	struct sk_buff *skb;
-	struct FS_BPENTRY *td;
-
-	while (!((rq = read_fs (dev, Q_RP(q->offset))) & Q_EMPTY)) {
-		fs_dprintk (FS_DEBUG_QUEUE, "reaping txdone entry at %lx\n", rq); 
-		qe = bus_to_virt (rq);
-    
-		fs_dprintk (FS_DEBUG_QUEUE, "queue entry: %08x %08x %08x %08x: %d\n", 
-			    qe->cmd, qe->p0, qe->p1, qe->p2, STATUS_CODE (qe));
-
-		if (STATUS_CODE (qe) != 2)
-			fs_dprintk (FS_DEBUG_TXMEM, "queue entry: %08x %08x %08x %08x: %d\n", 
-				    qe->cmd, qe->p0, qe->p1, qe->p2, STATUS_CODE (qe));
-
-
-		switch (STATUS_CODE (qe)) {
-		case 0x01: /* This is for AAL0 where we put the chip in streaming mode */
-			fallthrough;
-		case 0x02:
-			/* Process a real txdone entry. */
-			tmp = qe->p0;
-			if (tmp & 0x0f)
-				printk (KERN_WARNING "td not aligned: %ld\n", tmp);
-			tmp &= ~0x0f;
-			td = bus_to_virt (tmp);
-
-			fs_dprintk (FS_DEBUG_QUEUE, "Pool entry: %08x %08x %08x %08x %p.\n", 
-				    td->flags, td->next, td->bsa, td->aal_bufsize, td->skb );
-      
-			skb = td->skb;
-			if (skb == FS_VCC (ATM_SKB(skb)->vcc)->last_skb) {
-				FS_VCC (ATM_SKB(skb)->vcc)->last_skb = NULL;
-				wake_up_interruptible (& FS_VCC (ATM_SKB(skb)->vcc)->close_wait);
-			}
-			td->dev->ntxpckts--;
-
-			{
-				static int c=0;
-	
-				if (!(c++ % 100)) {
-					fs_dprintk (FS_DEBUG_QSIZE, "[%d]", td->dev->ntxpckts);
-				}
-			}
-
-			atomic_inc(&ATM_SKB(skb)->vcc->stats->tx);
-
-			fs_dprintk (FS_DEBUG_TXMEM, "i");
-			fs_dprintk (FS_DEBUG_ALLOC, "Free t-skb: %p\n", skb);
-			fs_kfree_skb (skb);
-
-			fs_dprintk (FS_DEBUG_ALLOC, "Free trans-d: %p\n", td); 
-			memset (td, ATM_POISON_FREE, sizeof(struct FS_BPENTRY));
-			kfree (td);
-			break;
-		default:
-			/* Here we get the tx purge inhibit command ... */
-			/* Action, I believe, is "don't do anything". -- REW */
-			;
-		}
-    
-		write_fs (dev, Q_RP(q->offset), Q_INCWRAP);
-	}
-}
-
-
-static void process_incoming (struct fs_dev *dev, struct queue *q)
-{
-	long rq;
-	struct FS_QENTRY *qe;
-	struct FS_BPENTRY *pe;    
-	struct sk_buff *skb;
-	unsigned int channo;
-	struct atm_vcc *atm_vcc;
-
-	while (!((rq = read_fs (dev, Q_RP(q->offset))) & Q_EMPTY)) {
-		fs_dprintk (FS_DEBUG_QUEUE, "reaping incoming queue entry at %lx\n", rq); 
-		qe = bus_to_virt (rq);
-    
-		fs_dprintk (FS_DEBUG_QUEUE, "queue entry: %08x %08x %08x %08x.  ", 
-			    qe->cmd, qe->p0, qe->p1, qe->p2);
-
-		fs_dprintk (FS_DEBUG_QUEUE, "-> %x: %s\n", 
-			    STATUS_CODE (qe), 
-			    res_strings[STATUS_CODE(qe)]);
-
-		pe = bus_to_virt (qe->p0);
-		fs_dprintk (FS_DEBUG_QUEUE, "Pool entry: %08x %08x %08x %08x %p %p.\n", 
-			    pe->flags, pe->next, pe->bsa, pe->aal_bufsize, 
-			    pe->skb, pe->fp);
-      
-		channo = qe->cmd & 0xffff;
-
-		if (channo < dev->nchannels)
-			atm_vcc = dev->atm_vccs[channo];
-		else
-			atm_vcc = NULL;
-
-		/* Single buffer packet */
-		switch (STATUS_CODE (qe)) {
-		case 0x1:
-			/* Fall through for streaming mode */
-			fallthrough;
-		case 0x2:/* Packet received OK.... */
-			if (atm_vcc) {
-				skb = pe->skb;
-				pe->fp->n--;
-#if 0
-				fs_dprintk (FS_DEBUG_QUEUE, "Got skb: %p\n", skb);
-				if (FS_DEBUG_QUEUE & fs_debug) my_hd (bus_to_virt (pe->bsa), 0x20);
-#endif
-				skb_put (skb, qe->p1 & 0xffff); 
-				ATM_SKB(skb)->vcc = atm_vcc;
-				atomic_inc(&atm_vcc->stats->rx);
-				__net_timestamp(skb);
-				fs_dprintk (FS_DEBUG_ALLOC, "Free rec-skb: %p (pushed)\n", skb);
-				atm_vcc->push (atm_vcc, skb);
-				fs_dprintk (FS_DEBUG_ALLOC, "Free rec-d: %p\n", pe);
-				kfree (pe);
-			} else {
-				printk (KERN_ERR "Got a receive on a non-open channel %d.\n", channo);
-			}
-			break;
-		case 0x17:/* AAL 5 CRC32 error. IFF the length field is nonzero, a buffer
-			     has been consumed and needs to be processed. -- REW */
-			if (qe->p1 & 0xffff) {
-				pe = bus_to_virt (qe->p0);
-				pe->fp->n--;
-				fs_dprintk (FS_DEBUG_ALLOC, "Free rec-skb: %p\n", pe->skb);
-				dev_kfree_skb_any (pe->skb);
-				fs_dprintk (FS_DEBUG_ALLOC, "Free rec-d: %p\n", pe);
-				kfree (pe);
-			}
-			if (atm_vcc)
-				atomic_inc(&atm_vcc->stats->rx_drop);
-			break;
-		case 0x1f: /*  Reassembly abort: no buffers. */
-			/* Silently increment error counter. */
-			if (atm_vcc)
-				atomic_inc(&atm_vcc->stats->rx_drop);
-			break;
-		default: /* Hmm. Haven't written the code to handle the others yet... -- REW */
-			printk (KERN_WARNING "Don't know what to do with RX status %x: %s.\n", 
-				STATUS_CODE(qe), res_strings[STATUS_CODE (qe)]);
-		}
-		write_fs (dev, Q_RP(q->offset), Q_INCWRAP);
-	}
-}
-
-
-
-#define DO_DIRECTION(tp) ((tp)->traffic_class != ATM_NONE)
-
-static int fs_open(struct atm_vcc *atm_vcc)
-{
-	struct fs_dev *dev;
-	struct fs_vcc *vcc;
-	struct fs_transmit_config *tc;
-	struct atm_trafprm * txtp;
-	struct atm_trafprm * rxtp;
-	/*  struct fs_receive_config *rc;*/
-	/*  struct FS_QENTRY *qe; */
-	int error;
-	int bfp;
-	int to;
-	unsigned short tmc0;
-	short vpi = atm_vcc->vpi;
-	int vci = atm_vcc->vci;
-
-	func_enter ();
-
-	dev = FS_DEV(atm_vcc->dev);
-	fs_dprintk (FS_DEBUG_OPEN, "fs: open on dev: %p, vcc at %p\n", 
-		    dev, atm_vcc);
-
-	if (vci != ATM_VPI_UNSPEC && vpi != ATM_VCI_UNSPEC)
-		set_bit(ATM_VF_ADDR, &atm_vcc->flags);
-
-	if ((atm_vcc->qos.aal != ATM_AAL5) &&
-	    (atm_vcc->qos.aal != ATM_AAL2))
-	  return -EINVAL; /* XXX AAL0 */
-
-	fs_dprintk (FS_DEBUG_OPEN, "fs: (itf %d): open %d.%d\n", 
-		    atm_vcc->dev->number, atm_vcc->vpi, atm_vcc->vci);	
-
-	/* XXX handle qos parameters (rate limiting) ? */
-
-	vcc = kmalloc(sizeof(struct fs_vcc), GFP_KERNEL);
-	fs_dprintk (FS_DEBUG_ALLOC, "Alloc VCC: %p(%zd)\n", vcc, sizeof(struct fs_vcc));
-	if (!vcc) {
-		clear_bit(ATM_VF_ADDR, &atm_vcc->flags);
-		return -ENOMEM;
-	}
-  
-	atm_vcc->dev_data = vcc;
-	vcc->last_skb = NULL;
-
-	init_waitqueue_head (&vcc->close_wait);
-
-	txtp = &atm_vcc->qos.txtp;
-	rxtp = &atm_vcc->qos.rxtp;
-
-	if (!test_bit(ATM_VF_PARTIAL, &atm_vcc->flags)) {
-		if (IS_FS50(dev)) {
-			/* Increment the channel numer: take a free one next time.  */
-			for (to=33;to;to--, dev->channo++) {
-				/* We only have 32 channels */
-				if (dev->channo >= 32)
-					dev->channo = 0;
-				/* If we need to do RX, AND the RX is inuse, try the next */
-				if (DO_DIRECTION(rxtp) && dev->atm_vccs[dev->channo])
-					continue;
-				/* If we need to do TX, AND the TX is inuse, try the next */
-				if (DO_DIRECTION(txtp) && test_bit (dev->channo, dev->tx_inuse))
-					continue;
-				/* Ok, both are free! (or not needed) */
-				break;
-			}
-			if (!to) {
-				printk ("No more free channels for FS50..\n");
-				kfree(vcc);
-				return -EBUSY;
-			}
-			vcc->channo = dev->channo;
-			dev->channo &= dev->channel_mask;
-      
-		} else {
-			vcc->channo = (vpi << FS155_VCI_BITS) | (vci);
-			if (((DO_DIRECTION(rxtp) && dev->atm_vccs[vcc->channo])) ||
-			    ( DO_DIRECTION(txtp) && test_bit (vcc->channo, dev->tx_inuse))) {
-				printk ("Channel is in use for FS155.\n");
-				kfree(vcc);
-				return -EBUSY;
-			}
-		}
-		fs_dprintk (FS_DEBUG_OPEN, "OK. Allocated channel %x(%d).\n", 
-			    vcc->channo, vcc->channo);
-	}
-
-	if (DO_DIRECTION (txtp)) {
-		tc = kmalloc (sizeof (struct fs_transmit_config), GFP_KERNEL);
-		fs_dprintk (FS_DEBUG_ALLOC, "Alloc tc: %p(%zd)\n",
-			    tc, sizeof (struct fs_transmit_config));
-		if (!tc) {
-			fs_dprintk (FS_DEBUG_OPEN, "fs: can't alloc transmit_config.\n");
-			kfree(vcc);
-			return -ENOMEM;
-		}
-
-		/* Allocate the "open" entry from the high priority txq. This makes
-		   it most likely that the chip will notice it. It also prevents us
-		   from having to wait for completion. On the other hand, we may
-		   need to wait for completion anyway, to see if it completed
-		   successfully. */
-
-		switch (atm_vcc->qos.aal) {
-		case ATM_AAL2:
-		case ATM_AAL0:
-		  tc->flags = 0
-		    | TC_FLAGS_TRANSPARENT_PAYLOAD
-		    | TC_FLAGS_PACKET
-		    | (1 << 28)
-		    | TC_FLAGS_TYPE_UBR /* XXX Change to VBR -- PVDL */
-		    | TC_FLAGS_CAL0;
-		  break;
-		case ATM_AAL5:
-		  tc->flags = 0
-			| TC_FLAGS_AAL5
-			| TC_FLAGS_PACKET  /* ??? */
-			| TC_FLAGS_TYPE_CBR
-			| TC_FLAGS_CAL0;
-		  break;
-		default:
-			printk ("Unknown aal: %d\n", atm_vcc->qos.aal);
-			tc->flags = 0;
-		}
-		/* Docs are vague about this atm_hdr field. By the way, the FS
-		 * chip makes odd errors if lower bits are set.... -- REW */
-		tc->atm_hdr =  (vpi << 20) | (vci << 4); 
-		tmc0 = 0;
-		{
-			int pcr = atm_pcr_goal (txtp);
-
-			fs_dprintk (FS_DEBUG_OPEN, "pcr = %d.\n", pcr);
-
-			/* XXX Hmm. officially we're only allowed to do this if rounding 
-			   is round_down -- REW */
-			if (IS_FS50(dev)) {
-				if (pcr > 51840000/53/8)  pcr = 51840000/53/8;
-			} else {
-				if (pcr > 155520000/53/8) pcr = 155520000/53/8;
-			}
-			if (!pcr) {
-				/* no rate cap */
-				tmc0 = IS_FS50(dev)?0x61BE:0x64c9; /* Just copied over the bits from Fujitsu -- REW */
-			} else {
-				int r;
-				if (pcr < 0) {
-					r = ROUND_DOWN;
-					pcr = -pcr;
-				} else {
-					r = ROUND_UP;
-				}
-				error = make_rate (pcr, r, &tmc0, NULL);
-				if (error) {
-					kfree(tc);
-					kfree(vcc);
-					return error;
-				}
-			}
-			fs_dprintk (FS_DEBUG_OPEN, "pcr = %d.\n", pcr);
-		}
-      
-		tc->TMC[0] = tmc0 | 0x4000;
-		tc->TMC[1] = 0; /* Unused */
-		tc->TMC[2] = 0; /* Unused */
-		tc->TMC[3] = 0; /* Unused */
-    
-		tc->spec = 0;    /* UTOPIA address, UDF, HEC: Unused -> 0 */
-		tc->rtag[0] = 0; /* What should I do with routing tags??? 
-				    -- Not used -- AS -- Thanks -- REW*/
-		tc->rtag[1] = 0;
-		tc->rtag[2] = 0;
-
-		if (fs_debug & FS_DEBUG_OPEN) {
-			fs_dprintk (FS_DEBUG_OPEN, "TX config record:\n");
-			my_hd (tc, sizeof (*tc));
-		}
-
-		/* We now use the "submit_command" function to submit commands to
-		   the firestream. There is a define up near the definition of
-		   that routine that switches this routine between immediate write
-		   to the immediate command registers and queuing the commands in
-		   the HPTXQ for execution. This last technique might be more
-		   efficient if we know we're going to submit a whole lot of
-		   commands in one go, but this driver is not setup to be able to
-		   use such a construct. So it probably doen't matter much right
-		   now. -- REW */
-    
-		/* The command is IMMediate and INQueue. The parameters are out-of-line.. */
-		submit_command (dev, &dev->hp_txq, 
-				QE_CMD_CONFIG_TX | QE_CMD_IMM_INQ | vcc->channo,
-				virt_to_bus (tc), 0, 0);
-
-		submit_command (dev, &dev->hp_txq, 
-				QE_CMD_TX_EN | QE_CMD_IMM_INQ | vcc->channo,
-				0, 0, 0);
-		set_bit (vcc->channo, dev->tx_inuse);
-	}
-
-	if (DO_DIRECTION (rxtp)) {
-		dev->atm_vccs[vcc->channo] = atm_vcc;
-
-		for (bfp = 0;bfp < FS_NR_FREE_POOLS; bfp++)
-			if (atm_vcc->qos.rxtp.max_sdu <= dev->rx_fp[bfp].bufsize) break;
-		if (bfp >= FS_NR_FREE_POOLS) {
-			fs_dprintk (FS_DEBUG_OPEN, "No free pool fits sdu: %d.\n", 
-				    atm_vcc->qos.rxtp.max_sdu);
-			/* XXX Cleanup? -- Would just calling fs_close work??? -- REW */
-
-			/* XXX clear tx inuse. Close TX part? */
-			dev->atm_vccs[vcc->channo] = NULL;
-			kfree (vcc);
-			return -EINVAL;
-		}
-
-		switch (atm_vcc->qos.aal) {
-		case ATM_AAL0:
-		case ATM_AAL2:
-			submit_command (dev, &dev->hp_txq,
-					QE_CMD_CONFIG_RX | QE_CMD_IMM_INQ | vcc->channo,
-					RC_FLAGS_TRANSP |
-					RC_FLAGS_BFPS_BFP * bfp |
-					RC_FLAGS_RXBM_PSB, 0, 0);
-			break;
-		case ATM_AAL5:
-			submit_command (dev, &dev->hp_txq,
-					QE_CMD_CONFIG_RX | QE_CMD_IMM_INQ | vcc->channo,
-					RC_FLAGS_AAL5 |
-					RC_FLAGS_BFPS_BFP * bfp |
-					RC_FLAGS_RXBM_PSB, 0, 0);
-			break;
-		}
-		if (IS_FS50 (dev)) {
-			submit_command (dev, &dev->hp_txq, 
-					QE_CMD_REG_WR | QE_CMD_IMM_INQ,
-					0x80 + vcc->channo,
-					(vpi << 16) | vci, 0 ); /* XXX -- Use defines. */
-		}
-		submit_command (dev, &dev->hp_txq, 
-				QE_CMD_RX_EN | QE_CMD_IMM_INQ | vcc->channo,
-				0, 0, 0);
-	}
-    
-	/* Indicate we're done! */
-	set_bit(ATM_VF_READY, &atm_vcc->flags);
-
-	func_exit ();
-	return 0;
-}
-
-
-static void fs_close(struct atm_vcc *atm_vcc)
-{
-	struct fs_dev *dev = FS_DEV (atm_vcc->dev);
-	struct fs_vcc *vcc = FS_VCC (atm_vcc);
-	struct atm_trafprm * txtp;
-	struct atm_trafprm * rxtp;
-
-	func_enter ();
-
-	clear_bit(ATM_VF_READY, &atm_vcc->flags);
-
-	fs_dprintk (FS_DEBUG_QSIZE, "--==**[%d]**==--", dev->nt