+++ /dev/null
-// 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->ntxpckts);
- if (vcc->last_skb) {
- fs_dprintk (FS_DEBUG_QUEUE, "Waiting for skb %p to be sent.\n",
- vcc->last_skb);
- /* We're going to wait for the last packet to get sent on this VC. It would
- be impolite not to send them don't you think?
- XXX
- We don't know which packets didn't get sent. So if we get interrupted in
- this sleep_on, we'll lose any reference to these packets. Memory leak!
- On the other hand, it's awfully convenient that we can abort a "close" that
- is taking too long. Maybe just use non-interruptible sleep on? -- REW */
- wait_event_interruptible(vcc->close_wait, !vcc->last_skb);
- }
-
- txtp = &atm_vcc->qos.txtp;
- rxtp = &atm_vcc->qos.rxtp;
-
-
- /* See App note XXX (Unpublished as of now) for the reason for the
- removal of the "CMD_IMM_INQ" part of the TX_PURGE_INH... -- REW */
-
- if (DO_DIRECTION (txtp)) {
- submit_command (dev, &dev->hp_txq,
- QE_CMD_TX_PURGE_INH | /*QE_CMD_IMM_INQ|*/ vcc->channo, 0,0,0);
- clear_bit (vcc->channo, dev->tx_inuse);
- }
-
- if (DO_DIRECTION (rxtp)) {
- submit_command (dev, &dev->hp_txq,
- QE_CMD_RX_PURGE_INH | QE_CMD_IMM_INQ | vcc->channo, 0,0,0);
- dev->atm_vccs [vcc->channo] = NULL;
-
- /* This means that this is configured as a receive channel */
- if (IS_FS50 (dev)) {
- /* Disable the receive filter. Is 0/0 indeed an invalid receive
- channel? -- REW. Yes it is. -- Hang. Ok. I'll use -1
- (0xfff...) -- REW */
- submit_command (dev, &dev->hp_txq,
- QE_CMD_REG_WR | QE_CMD_IMM_INQ,
- 0x80 + vcc->channo, -1, 0 );
- }
- }
-
- fs_dprintk (FS_DEBUG_ALLOC, "Free vcc: %p\n", vcc);
- kfree (vcc);
-
- func_exit ();
-}
-
-
-static int fs_send (struct atm_vcc *atm_vcc, struct sk_buff *skb)
-{
- struct fs_dev *dev = FS_DEV (atm_vcc->dev);
- struct fs_vcc *vcc = FS_VCC (atm_vcc);
- struct FS_BPENTRY *td;
-
- func_enter ();
-
- fs_dprintk (FS_DEBUG_TXMEM, "I");
- fs_dprintk (FS_DEBUG_SEND, "Send: atm_vcc %p skb %p vcc %p dev %p\n",
- atm_vcc, skb, vcc, dev);
-
- fs_dprintk (FS_DEBUG_ALLOC, "Alloc t-skb: %p (atm_send)\n", skb);
-
- ATM_SKB(skb)->vcc = atm_vcc;
-
- vcc->last_skb = skb;
-
- td = kmalloc (sizeof (struct FS_BPENTRY), GFP_ATOMIC);
- fs_dprintk (FS_DEBUG_ALLOC, "Alloc transd: %p(%zd)\n", td, sizeof (struct FS_BPENTRY));
- if (!td) {
- /* Oops out of mem */
- return -ENOMEM;
- }
-
- fs_dprintk (FS_DEBUG_SEND, "first word in buffer: %x\n",
- *(int *) skb->data);
-
- td->flags = TD_EPI | TD_DATA | skb->len;
- td->next = 0;
- td->bsa = virt_to_bus (skb->data);
- td->skb = skb;
- td->dev = dev;
- dev->ntxpckts++;
-
-#ifdef DEBUG_EXTRA
- da[qd] = td;
- dq[qd].flags = td->flags;
- dq[qd].next = td->next;
- dq[qd].bsa = td->bsa;
- dq[qd].skb = td->skb;
- dq[qd].dev = td->dev;
- qd++;
- if (qd >= 60) qd = 0;
-#endif
-
- submit_queue (dev, &dev->hp_txq,
- QE_TRANSMIT_DE | vcc->channo,
- virt_to_bus (td), 0,
- virt_to_bus (td));
-
- fs_dprintk (FS_DEBUG_QUEUE, "in send: txq %d txrq %d\n",
- read_fs (dev, Q_EA (dev->hp_txq.offset)) -
- read_fs (dev, Q_SA (dev->hp_txq.offset)),
- read_fs (dev, Q_EA (dev->tx_relq.offset)) -
- read_fs (dev, Q_SA (dev->tx_relq.offset)));
-
- func_exit ();
- return 0;
-}
-
-
-/* Some function placeholders for functions we don't yet support. */
-
-#if 0
-static int fs_ioctl(struct atm_dev *dev,unsigned int cmd,void __user *arg)
-{
- func_enter ();
- func_exit ();
- return -ENOIOCTLCMD;
-}
-
-
-static int fs_getsockopt(struct atm_vcc *vcc,int level,int optname,
- void __user *optval,int optlen)
-{
- func_enter ();
- func_exit ();
- return 0;
-}
-
-
-static int fs_setsockopt(struct atm_vcc *vcc,int level,int optname,
- void __user *optval,unsigned int optlen)
-{
- func_enter ();
- func_exit ();
- return 0;
-}
-
-
-static void fs_phy_put(struct atm_dev *dev,unsigned char value,
- unsigned long addr)
-{
- func_enter ();
- func_exit ();
-}
-
-
-static unsigned char fs_phy_get(struct atm_dev *dev,unsigned long addr)
-{
- func_enter ();
- func_exit ();
- return 0;
-}
-
-
-static int fs_change_qos(struct atm_vcc *vcc,struct atm_qos *qos,int flags)
-{
- func_enter ();
- func_exit ();
- return 0;
-};
-
-#endif
-
-
-static const struct atmdev_ops ops = {
- .open = fs_open,
- .close = fs_close,
- .send = fs_send,
- .owner = THIS_MODULE,
- /* ioctl: fs_ioctl, */
- /* change_qos: fs_change_qos, */
-
- /* For now implement these internally here... */
- /* phy_put: fs_phy_put, */
- /* phy_get: fs_phy_get, */
-};
-
-
-static void undocumented_pci_fix(struct pci_dev *pdev)
-{
- u32 tint;
-
- /* The Windows driver says: */
- /* Switch off FireStream Retry Limit Threshold
- */
-
- /* The register at 0x28 is documented as "reserved", no further
- comments. */
-
- pci_read_config_dword (pdev, 0x28, &tint);
- if (tint != 0x80) {
- tint = 0x80;
- pci_write_config_dword (pdev, 0x28, tint);
- }
-}
-
-
-
-/**************************************************************************
- * PHY routines *
- **************************************************************************/
-
-static void write_phy(struct fs_dev *dev, int regnum, int val)
-{
- submit_command (dev, &dev->hp_txq, QE_CMD_PRP_WR | QE_CMD_IMM_INQ,
- regnum, val, 0);
-}
-
-static int init_phy(struct fs_dev *dev, struct reginit_item *reginit)
-{
- int i;
-
- func_enter ();
- while (reginit->reg != PHY_EOF) {
- if (reginit->reg == PHY_CLEARALL) {
- /* "PHY_CLEARALL means clear all registers. Numregisters is in "val". */
- for (i=0;i<reginit->val;i++) {
- write_phy (dev, i, 0);
- }
- } else {
- write_phy (dev, reginit->reg, reginit->val);
- }
- reginit++;
- }
- func_exit ();
- return 0;
-}
-
-static void reset_chip (struct fs_dev *dev)
-{
- int i;
-
- write_fs (dev, SARMODE0, SARMODE0_SRTS0);
-
- /* Undocumented delay */
- udelay (128);
-
- /* The "internal registers are documented to all reset to zero, but
- comments & code in the Windows driver indicates that the pools are
- NOT reset. */
- for (i=0;i < FS_NR_FREE_POOLS;i++) {
- write_fs (dev, FP_CNF (RXB_FP(i)), 0);
- write_fs (dev, FP_SA (RXB_FP(i)), 0);
- write_fs (dev, FP_EA (RXB_FP(i)), 0);
- write_fs (dev, FP_CNT (RXB_FP(i)), 0);
- write_fs (dev, FP_CTU (RXB_FP(i)), 0);
- }
-
- /* The same goes for the match channel registers, although those are
- NOT documented that way in the Windows driver. -- REW */
- /* The Windows driver DOES write 0 to these registers somewhere in
- the init sequence. However, a small hardware-feature, will
- prevent reception of data on VPI/VCI = 0/0 (Unless the channel
- allocated happens to have no disabled channels that have a lower
- number. -- REW */
-
- /* Clear the match channel registers. */
- if (IS_FS50 (dev)) {
- for (i=0;i<FS50_NR_CHANNELS;i++) {
- write_fs (dev, 0x200 + i * 4, -1);
- }
- }
-}
-
-static void *aligned_kmalloc(int size, gfp_t flags, int alignment)
-{
- void *t;
-
- if (alignment <= 0x10) {
- t = kmalloc (size, flags);
- if ((unsigned long)t & (alignment-1)) {
- printk ("Kmalloc doesn't align things correctly! %p\n", t);
- kfree (t);
- return aligned_kmalloc (size, flags, alignment * 4);
- }
- return t;
- }
- printk (KERN_ERR "Request for > 0x10 alignment not yet implemented (hard!)\n");
- return NULL;
-}
-
-static int init_q(struct fs_dev *dev, struct queue *txq, int queue,
- int nentries, int is_rq)
-{
- int sz = nentries * sizeof (struct FS_QENTRY);
- struct FS_QENTRY *p;
-
- func_enter ();
-
- fs_dprintk (FS_DEBUG_INIT, "Initializing queue at %x: %d entries:\n",
- queue, nentries);
-
- p = aligned_kmalloc (sz, GFP_KERNEL, 0x10);
- fs_dprintk (FS_DEBUG_ALLOC, "Alloc queue: %p(%d)\n", p, sz);
-
- if (!p) return 0;
-
- write_fs (dev, Q_SA(queue), virt_to_bus(p));
- write_fs (dev, Q_EA(queue), virt_to_bus(p+nentries-1));
- write_fs (dev, Q_WP(queue), virt_to_bus(p));
- write_fs (dev, Q_RP(queue), virt_to_bus(p));
- if (is_rq) {
- /* Configuration for the receive queue: 0: interrupt immediately,
- no pre-warning to empty queues: We do our best to keep the
- queue filled anyway. */
- write_fs (dev, Q_CNF(queue), 0 );
- }
-
- txq->sa = p;
- txq->ea = p;
- txq->offset = queue;
-
- func_exit ();
- return 1;
-}
-
-
-static int init_fp(struct fs_dev *dev, struct freepool *fp, int queue,
- int bufsize, int nr_buffers)
-{
- func_enter ();
-
- fs_dprintk (FS_DEBUG_INIT, "Initializing free pool at %x:\n", queue);
-
- write_fs (dev, FP_CNF(queue), (bufsize * RBFP_RBS) | RBFP_RBSVAL | RBFP_CME);
- write_fs (dev, FP_SA(queue), 0);
- write_fs (dev, FP_EA(queue), 0);
- write_fs (dev, FP_CTU(queue), 0);
- write_fs (dev, FP_CNT(queue), 0);
-
- fp->offset = queue;
- fp->bufsize = bufsize;
- fp->nr_buffers = nr_buffers;
-
- func_exit ();
- return 1;
-}
-
-
-static inline int nr_buffers_in_freepool (struct fs_dev *dev, struct freepool *fp)
-{
-#if 0
- /* This seems to be unreliable.... */
- return read_fs (dev, FP_CNT (fp->offset));
-#else
- return fp->n;
-#endif
-}
-
-
-/* Check if this gets going again if a pool ever runs out. -- Yes, it
- does. I've seen "receive abort: no buffers" and things started
- working again after that... -- REW */
-
-static void top_off_fp (struct fs_dev *dev, struct freepool *fp,
- gfp_t gfp_flags)
-{
- struct FS_BPENTRY *qe, *ne;
- struct sk_buff *skb;
- int n = 0;
- u32 qe_tmp;
-
- fs_dprintk (FS_DEBUG_QUEUE, "Topping off queue at %x (%d-%d/%d)\n",
- fp->offset, read_fs (dev, FP_CNT (fp->offset)), fp->n,
- fp->nr_buffers);
- while (nr_buffers_in_freepool(dev, fp) < fp->nr_buffers) {
-
- skb = alloc_skb (fp->bufsize, gfp_flags);
- fs_dprintk (FS_DEBUG_ALLOC, "Alloc rec-skb: %p(%d)\n", skb, fp->bufsize);
- if (!skb) break;
- ne = kmalloc (sizeof (struct FS_BPENTRY), gfp_flags);
- fs_dprintk (FS_DEBUG_ALLOC, "Alloc rec-d: %p(%zd)\n", ne, sizeof (struct FS_BPENTRY));
- if (!ne) {
- fs_dprintk (FS_DEBUG_ALLOC, "Free rec-skb: %p\n", skb);
- dev_kfree_skb_any (skb);
- break;
- }
-
- fs_dprintk (FS_DEBUG_QUEUE, "Adding skb %p desc %p -> %p(%p) ",
- skb, ne, skb->data, skb->head);
- n++;
- ne->flags = FP_FLAGS_EPI | fp->bufsize;
- ne->next = virt_to_bus (NULL);
- ne->bsa = virt_to_bus (skb->data);
- ne->aal_bufsize = fp->bufsize;
- ne->skb = skb;
- ne->fp = fp;
-
- /*
- * FIXME: following code encodes and decodes
- * machine pointers (could be 64-bit) into a
- * 32-bit register.
- */
-
- qe_tmp = read_fs (dev, FP_EA(fp->offset));
- fs_dprintk (FS_DEBUG_QUEUE, "link at %x\n", qe_tmp);
- if (qe_tmp) {
- qe = bus_to_virt ((long) qe_tmp);
- qe->next = virt_to_bus(ne);
- qe->flags &= ~FP_FLAGS_EPI;
- } else
- write_fs (dev, FP_SA(fp->offset), virt_to_bus(ne));
-
- write_fs (dev, FP_EA(fp->offset), virt_to_bus (ne));
- fp->n++; /* XXX Atomic_inc? */
- write_fs (dev, FP_CTU(fp->offset), 1);
- }
-
- fs_dprintk (FS_DEBUG_QUEUE, "Added %d entries. \n", n);
-}
-
-static void free_queue(struct fs_dev *dev, struct queue *txq)
-{
- func_enter ();
-
- write_fs (dev, Q_SA(txq->offset), 0);
- write_fs (dev, Q_EA(txq->offset), 0);
- write_fs (dev, Q_RP(txq->offset), 0);
- write_fs (dev, Q_WP(txq->offset), 0);
- /* Configuration ? */
-
- fs_dprintk (FS_DEBUG_ALLOC, "Free queue: %p\n", txq->sa);
- kfree (txq->sa);
-
- func_exit ();
-}
-
-static void free_freepool(struct fs_dev *dev, struct freepool *fp)
-{
- func_enter ();
-
- write_fs (dev, FP_CNF(fp->offset), 0);
- write_fs (dev, FP_SA (fp->offset), 0);
- write_fs (dev, FP_EA (fp->offset), 0);
- write_fs (dev, FP_CNT(fp->offset), 0);
- write_fs (dev, FP_CTU(fp->offset), 0);
-
- func_exit ();
-}
-
-
-
-static irqreturn_t fs_irq (int irq, void *dev_id)
-{
- int i;
- u32 status;
- struct fs_dev *dev = dev_id;
-
- status = read_fs (dev, ISR);
- if (!status)
- return IRQ_NONE;
-
- func_enter ();
-
-#ifdef IRQ_RATE_LIMIT
- /* Aaargh! I'm ashamed. This costs more lines-of-code than the actual
- interrupt routine!. (Well, used to when I wrote that comment) -- REW */
- {
- static int lastjif;
- static int nintr=0;
-
- if (lastjif == jiffies) {
- if (++nintr > IRQ_RATE_LIMIT) {
- free_irq (dev->irq, dev_id);
- printk (KERN_ERR "fs: Too many interrupts. Turning off interrupt %d.\n",
- dev->irq);
- }
- } else {
- lastjif = jiffies;
- nintr = 0;
- }
- }
-#endif
- fs_dprintk (FS_DEBUG_QUEUE, "in intr: txq %d txrq %d\n",
- read_fs (dev, Q_EA (dev->hp_txq.offset)) -
- read_fs (dev, Q_SA (dev->hp_txq.offset)),
- read_fs (dev, Q_EA (dev->tx_relq.offset)) -
- read_fs (dev, Q_SA (dev->tx_relq.offset)));
-
- /* print the bits in the ISR register. */
- if (fs_debug & FS_DEBUG_IRQ) {
- /* The FS_DEBUG things are unnecessary here. But this way it is
- clear for grep that these are debug prints. */
- fs_dprintk (FS_DEBUG_IRQ, "IRQ status:");
- for (i=0;i<27;i++)
- if (status & (1 << i))
- fs_dprintk (FS_DEBUG_IRQ, " %s", irq_bitname[i]);
- fs_dprintk (FS_DEBUG_IRQ, "\n");
- }
-
- if (status & ISR_RBRQ0_W) {
- fs_dprintk (FS_DEBUG_IRQ, "Iiiin-coming (0)!!!!\n");
- process_incoming (dev, &dev->rx_rq[0]);
- /* items mentioned on RBRQ0 are from FP 0 or 1. */
- top_off_fp (dev, &dev->rx_fp[0], GFP_ATOMIC);
- top_off_fp (dev, &dev->rx_fp[1], GFP_ATOMIC);
- }
-
- if (status & ISR_RBRQ1_W) {
- fs_dprintk (FS_DEBUG_IRQ, "Iiiin-coming (1)!!!!\n");
- process_incoming (dev, &dev->rx_rq[1]);
- top_off_fp (dev, &dev->rx_fp[2], GFP_ATOMIC);
- top_off_fp (dev, &dev->rx_fp[3], GFP_ATOMIC);
- }
-
- if (status & ISR_RBRQ2_W) {
- fs_dprintk (FS_DEBUG_IRQ, "Iiiin-coming (2)!!!!\n");
- process_incoming (dev, &dev->rx_rq[2]);
- top_off_fp (dev, &dev->rx_fp[4], GFP_ATOMIC);
- top_off_fp (dev, &dev->rx_fp[5], GFP_ATOMIC);
- }
-
- if (status & ISR_RBRQ3_W) {
- fs_dprintk (FS_DEBUG_IRQ, "Iiiin-coming (3)!!!!\n");
- process_incoming (dev, &dev->rx_rq[3]);
- top_off_fp (dev, &dev->rx_fp[6], GFP_ATOMIC);
- top_off_fp (dev, &dev->rx_fp[7], GFP_ATOMIC);
- }
-
- if (status & ISR_CSQ_W) {
- fs_dprintk (FS_DEBUG_IRQ, "Command executed ok!\n");
- process_return_queue (dev, &dev->st_q);
- }
-
- if (status & ISR_TBRQ_W) {
- fs_dprintk (FS_DEBUG_IRQ, "Data transmitted!\n");
- process_txdone_queue (dev, &dev->tx_relq);
- }
-
- func_exit ();
- return IRQ_HANDLED;
-}
-
-
-#ifdef FS_POLL_FREQ
-static void fs_poll (struct timer_list *t)
-{
- struct fs_dev *dev = from_timer(dev, t, timer);
-
- fs_irq (0, dev);
- dev->timer.expires = jiffies + FS_POLL_FREQ;
- add_timer (&dev->timer);
-}
-#endif
-
-static int fs_init(struct fs_dev *dev)
-{
- struct pci_dev *pci_dev;
- int isr, to;
- int i;
-
- func_enter ();
- pci_dev = dev->pci_dev;
-
- printk (KERN_INFO "found a FireStream %d card, base %16llx, irq%d.\n",
- IS_FS50(dev)?50:155,
- (unsigned long long)pci_resource_start(pci_dev, 0),
- dev->pci_dev->irq);
-
- if (fs_debug & FS_DEBUG_INIT)
- my_hd ((unsigned char *) dev, sizeof (*dev));
-
- undocumented_pci_fix (pci_dev);
-
- dev->hw_base = pci_resource_start(pci_dev, 0);
-
- dev->base = ioremap(dev->hw_base, 0x1000);
- if (!dev->base)
- return 1;
-
- reset_chip (dev);
-
- write_fs (dev, SARMODE0, 0
- | (0 * SARMODE0_SHADEN) /* We don't use shadow registers. */
- | (1 * SARMODE0_INTMODE_READCLEAR)
- | (1 * SARMODE0_CWRE)
- | (IS_FS50(dev) ? SARMODE0_PRPWT_FS50_5:
- SARMODE0_PRPWT_FS155_3)
- | (1 * SARMODE0_CALSUP_1)
- | (IS_FS50(dev) ? (0
- | SARMODE0_RXVCS_32
- | SARMODE0_ABRVCS_32
- | SARMODE0_TXVCS_32):
- (0
- | SARMODE0_RXVCS_1k
- | SARMODE0_ABRVCS_1k
- | SARMODE0_TXVCS_1k)));
-
- /* 10ms * 100 is 1 second. That should be enough, as AN3:9 says it takes
- 1ms. */
- to = 100;
- while (--to) {
- isr = read_fs (dev, ISR);
-
- /* This bit is documented as "RESERVED" */
- if (isr & ISR_INIT_ERR) {
- printk (KERN_ERR "Error initializing the FS... \n");
- goto unmap;
- }
- if (isr & ISR_INIT) {
- fs_dprintk (FS_DEBUG_INIT, "Ha! Initialized OK!\n");
- break;
- }
-
- /* Try again after 10ms. */
- msleep(10);
- }
-
- if (!to) {
- printk (KERN_ERR "timeout initializing the FS... \n");
- goto unmap;
- }
-
- /* XXX fix for fs155 */
- dev->channel_mask = 0x1f;
- dev->channo = 0;
-
- /* AN3: 10 */
- write_fs (dev, SARMODE1, 0
- | (fs_keystream * SARMODE1_DEFHEC) /* XXX PHY */
- | ((loopback == 1) * SARMODE1_TSTLP) /* XXX Loopback mode enable... */
- | (1 * SARMODE1_DCRM)
- | (1 * SARMODE1_DCOAM)
- | (0 * SARMODE1_OAMCRC)
- | (0 * SARMODE1_DUMPE)
- | (0 * SARMODE1_GPLEN)
- | (0 * SARMODE1_GNAM)
- | (0 * SARMODE1_GVAS)
- | (0 * SARMODE1_GPAS)
- | (1 * SARMODE1_GPRI)
- | (0 * SARMODE1_PMS)
- | (0 * SARMODE1_GFCR)
- | (1 * SARMODE1_HECM2)
- | (1 * SARMODE1_HECM1)
- | (1 * SARMODE1_HECM0)
- | (1 << 12) /* That's what hang's driver does. Program to 0 */
- | (0 * 0xff) /* XXX FS155 */);
-
-
- /* Cal prescale etc */
-
- /* AN3: 11 */
- write_fs (dev, TMCONF, 0x0000000f);
- write_fs (dev, CALPRESCALE, 0x01010101 * num);
- write_fs (dev, 0x80, 0x000F00E4);
-
- /* AN3: 12 */
- write_fs (dev, CELLOSCONF, 0
- | ( 0 * CELLOSCONF_CEN)
- | ( CELLOSCONF_SC1)
- | (0x80 * CELLOSCONF_COBS)
- | (num * CELLOSCONF_COPK) /* Changed from 0xff to 0x5a */
- | (num * CELLOSCONF_COST));/* after a hint from Hang.
- * performance jumped 50->70... */
-
- /* Magic value by Hang */
- write_fs (dev, CELLOSCONF_COST, 0x0B809191);
-
- if (IS_FS50 (dev)) {
- write_fs (dev, RAS0, RAS0_DCD_XHLT);
- dev->atm_dev->ci_range.vpi_bits = 12;
- dev->atm_dev->ci_range.vci_bits = 16;
- dev->nchannels = FS50_NR_CHANNELS;
- } else {
- write_fs (dev, RAS0, RAS0_DCD_XHLT
- | (((1 << FS155_VPI_BITS) - 1) * RAS0_VPSEL)
- | (((1 << FS155_VCI_BITS) - 1) * RAS0_VCSEL));
- /* We can chose the split arbitrarily. We might be able to
- support more. Whatever. This should do for now. */
- dev->atm_dev->ci_range.vpi_bits = FS155_VPI_BITS;
- dev->atm_dev->ci_range.vci_bits = FS155_VCI_BITS;
-
- /* Address bits we can't use should be compared to 0. */
- write_fs (dev, RAC, 0);
-
- /* Manual (AN9, page 6) says ASF1=0 means compare Utopia address
- * too. I can't find ASF1 anywhere. Anyway, we AND with just the
- * other bits, then compare with 0, which is exactly what we
- * want. */
- write_fs (dev, RAM, (1 << (28 - FS155_VPI_BITS - FS155_VCI_BITS)) - 1);
- dev->nchannels = FS155_NR_CHANNELS;
- }
- dev->atm_vccs = kcalloc (dev->nchannels, sizeof (struct atm_vcc *),
- GFP_KERNEL);
- fs_dprintk (FS_DEBUG_ALLOC, "Alloc atmvccs: %p(%zd)\n",
- dev->atm_vccs, dev->nchannels * sizeof (struct atm_vcc *));
-
- if (!dev->atm_vccs) {
- printk (KERN_WARNING "Couldn't allocate memory for VCC buffers. Woops!\n");
- /* XXX Clean up..... */
- goto unmap;
- }
-
- dev->tx_inuse = kzalloc (dev->nchannels / 8 /* bits/byte */ , GFP_KERNEL);
- fs_dprintk (FS_DEBUG_ALLOC, "Alloc tx_inuse: %p(%d)\n",
- dev->atm_vccs, dev->nchannels / 8);
-
- if (!dev->tx_inuse) {
- printk (KERN_WARNING "Couldn't allocate memory for tx_inuse bits!\n");
- /* XXX Clean up..... */
- goto unmap;
- }
- /* -- RAS1 : FS155 and 50 differ. Default (0) should be OK for both */
- /* -- RAS2 : FS50 only: Default is OK. */
-
- /* DMAMODE, default should be OK. -- REW */
- write_fs (dev, DMAMR, DMAMR_TX_MODE_FULL);
-
- init_q (dev, &dev->hp_txq, TX_PQ(TXQ_HP), TXQ_NENTRIES, 0);
- init_q (dev, &dev->lp_txq, TX_PQ(TXQ_LP), TXQ_NENTRIES, 0);
- init_q (dev, &dev->tx_relq, TXB_RQ, TXQ_NENTRIES, 1);
- init_q (dev, &dev->st_q, ST_Q, TXQ_NENTRIES, 1);
-
- for (i=0;i < FS_NR_FREE_POOLS;i++) {
- init_fp (dev, &dev->rx_fp[i], RXB_FP(i),
- rx_buf_sizes[i], rx_pool_sizes[i]);
- top_off_fp (dev, &dev->rx_fp[i], GFP_KERNEL);
- }
-
-
- for (i=0;i < FS_NR_RX_QUEUES;i++)
- init_q (dev, &dev->rx_rq[i], RXB_RQ(i), RXRQ_NENTRIES, 1);
-
- dev->irq = pci_dev->irq;
- if (request_irq (dev->irq, fs_irq, IRQF_SHARED, "firestream", dev)) {
- printk (KERN_WARNING "couldn't get irq %d for firestream.\n", pci_dev->irq);
- /* XXX undo all previous stuff... */
- goto unmap;
- }
- fs_dprintk (FS_DEBUG_INIT, "Grabbed irq %d for dev at %p.\n", dev->irq, dev);
-
- /* We want to be notified of most things. Just the statistics count
- overflows are not interesting */
- write_fs (dev, IMR, 0
- | ISR_RBRQ0_W
- | ISR_RBRQ1_W
- | ISR_RBRQ2_W
- | ISR_RBRQ3_W
- | ISR_TBRQ_W
- | ISR_CSQ_W);
-
- write_fs (dev, SARMODE0, 0
- | (0 * SARMODE0_SHADEN) /* We don't use shadow registers. */
- | (1 * SARMODE0_GINT)
- | (1 * SARMODE0_INTMODE_READCLEAR)
- | (0 * SARMODE0_CWRE)
- | (IS_FS50(dev)?SARMODE0_PRPWT_FS50_5:
- SARMODE0_PRPWT_FS155_3)
- | (1 * SARMODE0_CALSUP_1)
- | (IS_FS50 (dev)?(0
- | SARMODE0_RXVCS_32
- | SARMODE0_ABRVCS_32
- | SARMODE0_TXVCS_32):
- (0
- | SARMODE0_RXVCS_1k
- | SARMODE0_ABRVCS_1k
- | SARMODE0_TXVCS_1k))
- | (1 * SARMODE0_RUN));
-
- init_phy (dev, PHY_NTC_INIT);
-
- if (loopback == 2) {
- write_phy (dev, 0x39, 0x000e);
- }
-
-#ifdef FS_POLL_FREQ
- timer_setup(&dev->timer, fs_poll, 0);
- dev->timer.expires = jiffies + FS_POLL_FREQ;
- add_timer (&dev->timer);
-#endif
-
- dev->atm_dev->dev_data = dev;
-
- func_exit ();
- return 0;
-unmap:
- iounmap(dev->base);
- return 1;
-}
-
-static int firestream_init_one(struct pci_dev *pci_dev,
- const struct pci_device_id *ent)
-{
- struct atm_dev *atm_dev;
- struct fs_dev *fs_dev;
-
- if (pci_enable_device(pci_dev))
- goto err_out;
-
- fs_dev = kzalloc (sizeof (struct fs_dev), GFP_KERNEL);
- fs_dprintk (FS_DEBUG_ALLOC, "Alloc fs-dev: %p(%zd)\n",
- fs_dev, sizeof (struct fs_dev));
- if (!fs_dev)
- goto err_out;
- atm_dev = atm_dev_register("fs", &pci_dev->dev, &ops, -1, NULL);
- if (!atm_dev)
- goto err_out_free_fs_dev;
-
- fs_dev->pci_dev = pci_dev;
- fs_dev->atm_dev = atm_dev;
- fs_dev->flags = ent->driver_data;
-
- if (fs_init(fs_dev))
- goto err_out_free_atm_dev;
-
- fs_dev->next = fs_boards;
- fs_boards = fs_dev;
- return 0;
-
- err_out_free_atm_dev:
- atm_dev_deregister(atm_dev);
- err_out_free_fs_dev:
- kfree(fs_dev);
- err_out:
- return -ENODEV;
-}
-
-static void firestream_remove_one(struct pci_dev *pdev)
-{
- int i;
- struct fs_dev *dev, *nxtdev;
- struct fs_vcc *vcc;
- struct FS_BPENTRY *fp, *nxt;
-
- func_enter ();
-
-#if 0
- printk ("hptxq:\n");
- for (i=0;i<60;i++) {
- printk ("%d: %08x %08x %08x %08x \n",
- i, pq[qp].cmd, pq[qp].p0, pq[qp].p1, pq[qp].p2);
- qp++;
- if (qp >= 60) qp = 0;
- }
-
- printk ("descriptors:\n");
- for (i=0;i<60;i++) {
- printk ("%d: %p: %08x %08x %p %p\n",
- i, da[qd], dq[qd].flags, dq[qd].bsa, dq[qd].skb, dq[qd].dev);
- qd++;
- if (qd >= 60) qd = 0;
- }
-#endif
-
- for (dev = fs_boards;dev != NULL;dev=nxtdev) {
- fs_dprintk (FS_DEBUG_CLEANUP, "Releasing resources for dev at %p.\n", dev);
-
- /* XXX Hit all the tx channels too! */
-
- for (i=0;i < dev->nchannels;i++) {
- if (dev->atm_vccs[i]) {
- vcc = FS_VCC (dev->atm_vccs[i]);
- submit_command (dev, &dev->hp_txq,
- QE_CMD_TX_PURGE_INH | QE_CMD_IMM_INQ | vcc->channo, 0,0,0);
- submit_command (dev, &dev->hp_txq,
- QE_CMD_RX_PURGE_INH | QE_CMD_IMM_INQ | vcc->channo, 0,0,0);
-
- }
- }
-
- /* XXX Wait a while for the chip to release all buffers. */
-
- for (i=0;i < FS_NR_FREE_POOLS;i++) {
- for (fp=bus_to_virt (read_fs (dev, FP_SA(dev->rx_fp[i].offset)));
- !(fp->flags & FP_FLAGS_EPI);fp = nxt) {
- fs_dprintk (FS_DEBUG_ALLOC, "Free rec-skb: %p\n", fp->skb);
- dev_kfree_skb_any (fp->skb);
- nxt = bus_to_virt (fp->next);
- fs_dprintk (FS_DEBUG_ALLOC, "Free rec-d: %p\n", fp);
- kfree (fp);
- }
- fs_dprintk (FS_DEBUG_ALLOC, "Free rec-skb: %p\n", fp->skb);
- dev_kfree_skb_any (fp->skb);
- fs_dprintk (FS_DEBUG_ALLOC, "Free rec-d: %p\n", fp);
- kfree (fp);
- }
-
- /* Hang the chip in "reset", prevent it clobbering memory that is
- no longer ours. */
- reset_chip (dev);
-
- fs_dprintk (FS_DEBUG_CLEANUP, "Freeing irq%d.\n", dev->irq);
- free_irq (dev->irq, dev);
- del_timer_sync (&dev->timer);
-
- atm_dev_deregister(dev->atm_dev);
- free_queue (dev, &dev->hp_txq);
- free_queue (dev, &dev->lp_txq);
- free_queue (dev, &dev->tx_relq);
- free_queue (dev, &dev->st_q);
-
- fs_dprintk (FS_DEBUG_ALLOC, "Free atmvccs: %p\n", dev->atm_vccs);
- kfree (dev->atm_vccs);
-
- for (i=0;i< FS_NR_FREE_POOLS;i++)
- free_freepool (dev, &dev->rx_fp[i]);
-
- for (i=0;i < FS_NR_RX_QUEUES;i++)
- free_queue (dev, &dev->rx_rq[i]);
-
- iounmap(dev->base);
- fs_dprintk (FS_DEBUG_ALLOC, "Free fs-dev: %p\n", dev);
- nxtdev = dev->next;
- kfree (dev);
- }
-
- func_exit ();
-}
-
-static const struct pci_device_id firestream_pci_tbl[] = {
- { PCI_VDEVICE(FUJITSU_ME, PCI_DEVICE_ID_FUJITSU_FS50), FS_IS50},
- { PCI_VDEVICE(FUJITSU_ME, PCI_DEVICE_ID_FUJITSU_FS155), FS_IS155},
- { 0, }
-};
-
-MODULE_DEVICE_TABLE(pci, firestream_pci_tbl);
-
-static struct pci_driver firestream_driver = {
- .name = "firestream",
- .id_table = firestream_pci_tbl,
- .probe = firestream_init_one,
- .remove = firestream_remove_one,
-};
-
-static int __init firestream_init_module (void)
-{
- int error;
-
- func_enter ();
- error = pci_register_driver(&firestream_driver);
- func_exit ();
- return error;
-}
-
-static void __exit firestream_cleanup_module(void)
-{
- pci_unregister_driver(&firestream_driver);
-}
-
-module_init(firestream_init_module);
-module_exit(firestream_cleanup_module);
-
-MODULE_LICENSE("GPL");
-
-
-
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/* drivers/atm/firestream.h - 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
- */
-
-/*
-*/
-
-
-/***********************************************************************
- * first the defines for the chip. *
- ***********************************************************************/
-
-
-/********************* General chip parameters. ************************/
-
-#define FS_NR_FREE_POOLS 8
-#define FS_NR_RX_QUEUES 4
-
-
-/********************* queues and queue access macros ******************/
-
-
-/* A queue entry. */
-struct FS_QENTRY {
- u32 cmd;
- u32 p0, p1, p2;
-};
-
-
-/* A freepool entry. */
-struct FS_BPENTRY {
- u32 flags;
- u32 next;
- u32 bsa;
- u32 aal_bufsize;
-
- /* The hardware doesn't look at this, but we need the SKB somewhere... */
- struct sk_buff *skb;
- struct freepool *fp;
- struct fs_dev *dev;
-};
-
-
-#define STATUS_CODE(qe) ((qe->cmd >> 22) & 0x3f)
-
-
-/* OFFSETS against the base of a QUEUE... */
-#define QSA 0x00
-#define QEA 0x04
-#define QRP 0x08
-#define QWP 0x0c
-#define QCNF 0x10 /* Only for Release queues! */
-/* Not for the transmit pending queue. */
-
-
-/* OFFSETS against the base of a FREE POOL... */
-#define FPCNF 0x00
-#define FPSA 0x04
-#define FPEA 0x08
-#define FPCNT 0x0c
-#define FPCTU 0x10
-
-#define Q_SA(b) (b + QSA )
-#define Q_EA(b) (b + QEA )
-#define Q_RP(b) (b + QRP )
-#define Q_WP(b) (b + QWP )
-#define Q_CNF(b) (b + QCNF)
-
-#define FP_CNF(b) (b + FPCNF)
-#define FP_SA(b) (b + FPSA)
-#define FP_EA(b) (b + FPEA)
-#define FP_CNT(b) (b + FPCNT)
-#define FP_CTU(b) (b + FPCTU)
-
-/* bits in a queue register. */
-#define Q_FULL 0x1
-#define Q_EMPTY 0x2
-#define Q_INCWRAP 0x4
-#define Q_ADDR_MASK 0xfffffff0
-
-/* bits in a FreePool config register */
-#define RBFP_RBS (0x1 << 16)
-#define RBFP_RBSVAL (0x1 << 15)
-#define RBFP_CME (0x1 << 12)
-#define RBFP_DLP (0x1 << 11)
-#define RBFP_BFPWT (0x1 << 0)
-
-
-
-
-/* FireStream commands. */
-#define QE_CMD_NULL (0x00 << 22)
-#define QE_CMD_REG_RD (0x01 << 22)
-#define QE_CMD_REG_RDM (0x02 << 22)
-#define QE_CMD_REG_WR (0x03 << 22)
-#define QE_CMD_REG_WRM (0x04 << 22)
-#define QE_CMD_CONFIG_TX (0x05 << 22)
-#define QE_CMD_CONFIG_RX (0x06 << 22)
-#define QE_CMD_PRP_RD (0x07 << 22)
-#define QE_CMD_PRP_RDM (0x2a << 22)
-#define QE_CMD_PRP_WR (0x09 << 22)
-#define QE_CMD_PRP_WRM (0x2b << 22)
-#define QE_CMD_RX_EN (0x0a << 22)
-#define QE_CMD_RX_PURGE (0x0b << 22)
-#define QE_CMD_RX_PURGE_INH (0x0c << 22)
-#define QE_CMD_TX_EN (0x0d << 22)
-#define QE_CMD_TX_PURGE (0x0e << 22)
-#define QE_CMD_TX_PURGE_INH (0x0f << 22)
-#define QE_CMD_RST_CG (0x10 << 22)
-#define QE_CMD_SET_CG (0x11 << 22)
-#define QE_CMD_RST_CLP (0x12 << 22)
-#define QE_CMD_SET_CLP (0x13 << 22)
-#define QE_CMD_OVERRIDE (0x14 << 22)
-#define QE_CMD_ADD_BFP (0x15 << 22)
-#define QE_CMD_DUMP_TX (0x16 << 22)
-#define QE_CMD_DUMP_RX (0x17 << 22)
-#define QE_CMD_LRAM_RD (0x18 << 22)
-#define QE_CMD_LRAM_RDM (0x28 << 22)
-#define QE_CMD_LRAM_WR (0x19 << 22)
-#define QE_CMD_LRAM_WRM (0x29 << 22)
-#define QE_CMD_LRAM_BSET (0x1a << 22)
-#define QE_CMD_LRAM_BCLR (0x1b << 22)
-#define QE_CMD_CONFIG_SEGM (0x1c << 22)
-#define QE_CMD_READ_SEGM (0x1d << 22)
-#define QE_CMD_CONFIG_ROUT (0x1e << 22)
-#define QE_CMD_READ_ROUT (0x1f << 22)
-#define QE_CMD_CONFIG_TM (0x20 << 22)
-#define QE_CMD_READ_TM (0x21 << 22)
-#define QE_CMD_CONFIG_TXBM (0x22 << 22)
-#define QE_CMD_READ_TXBM (0x23 << 22)
-#define QE_CMD_CONFIG_RXBM (0x24 << 22)
-#define QE_CMD_READ_RXBM (0x25 << 22)
-#define QE_CMD_CONFIG_REAS (0x26 << 22)
-#define QE_CMD_READ_REAS (0x27 << 22)
-
-#define QE_TRANSMIT_DE (0x0 << 30)
-#define QE_CMD_LINKED (0x1 << 30)
-#define QE_CMD_IMM (0x2 << 30)
-#define QE_CMD_IMM_INQ (0x3 << 30)
-
-#define TD_EPI (0x1 << 27)
-#define TD_COMMAND (0x1 << 28)
-
-#define TD_DATA (0x0 << 29)
-#define TD_RM_CELL (0x1 << 29)
-#define TD_OAM_CELL (0x2 << 29)
-#define TD_OAM_CELL_SEGMENT (0x3 << 29)
-
-#define TD_BPI (0x1 << 20)
-
-#define FP_FLAGS_EPI (0x1 << 27)
-
-
-#define TX_PQ(i) (0x00 + (i) * 0x10)
-#define TXB_RQ (0x20)
-#define ST_Q (0x48)
-#define RXB_FP(i) (0x90 + (i) * 0x14)
-#define RXB_RQ(i) (0x134 + (i) * 0x14)
-
-
-#define TXQ_HP 0
-#define TXQ_LP 1
-
-/* Phew. You don't want to know how many revisions these simple queue
- * address macros went through before I got them nice and compact as
- * they are now. -- REW
- */
-
-
-/* And now for something completely different:
- * The rest of the registers... */
-
-
-#define CMDR0 0x34
-#define CMDR1 0x38
-#define CMDR2 0x3c
-#define CMDR3 0x40
-
-
-#define SARMODE0 0x5c
-
-#define SARMODE0_TXVCS_0 (0x0 << 0)
-#define SARMODE0_TXVCS_1k (0x1 << 0)
-#define SARMODE0_TXVCS_2k (0x2 << 0)
-#define SARMODE0_TXVCS_4k (0x3 << 0)
-#define SARMODE0_TXVCS_8k (0x4 << 0)
-#define SARMODE0_TXVCS_16k (0x5 << 0)
-#define SARMODE0_TXVCS_32k (0x6 << 0)
-#define SARMODE0_TXVCS_64k (0x7 << 0)
-#define SARMODE0_TXVCS_32 (0x8 << 0)
-
-#define SARMODE0_ABRVCS_0 (0x0 << 4)
-#define SARMODE0_ABRVCS_512 (0x1 << 4)
-#define SARMODE0_ABRVCS_1k (0x2 << 4)
-#define SARMODE0_ABRVCS_2k (0x3 << 4)
-#define SARMODE0_ABRVCS_4k (0x4 << 4)
-#define SARMODE0_ABRVCS_8k (0x5 << 4)
-#define SARMODE0_ABRVCS_16k (0x6 << 4)
-#define SARMODE0_ABRVCS_32k (0x7 << 4)
-#define SARMODE0_ABRVCS_32 (0x9 << 4) /* The others are "8", this one really has to
- be 9. Tell me you don't believe me. -- REW */
-
-#define SARMODE0_RXVCS_0 (0x0 << 8)
-#define SARMODE0_RXVCS_1k (0x1 << 8)
-#define SARMODE0_RXVCS_2k (0x2 << 8)
-#define SARMODE0_RXVCS_4k (0x3 << 8)
-#define SARMODE0_RXVCS_8k (0x4 << 8)
-#define SARMODE0_RXVCS_16k (0x5 << 8)
-#define SARMODE0_RXVCS_32k (0x6 << 8)
-#define SARMODE0_RXVCS_64k (0x7 << 8)
-#define SARMODE0_RXVCS_32 (0x8 << 8)
-
-#define SARMODE0_CALSUP_1 (0x0 << 12)
-#define SARMODE0_CALSUP_2 (0x1 << 12)
-#define SARMODE0_CALSUP_3 (0x2 << 12)
-#define SARMODE0_CALSUP_4 (0x3 << 12)
-
-#define SARMODE0_PRPWT_FS50_0 (0x0 << 14)
-#define SARMODE0_PRPWT_FS50_2 (0x1 << 14)
-#define SARMODE0_PRPWT_FS50_5 (0x2 << 14)
-#define SARMODE0_PRPWT_FS50_11 (0x3 << 14)
-
-#define SARMODE0_PRPWT_FS155_0 (0x0 << 14)
-#define SARMODE0_PRPWT_FS155_1 (0x1 << 14)
-#define SARMODE0_PRPWT_FS155_2 (0x2 << 14)
-#define SARMODE0_PRPWT_FS155_3 (0x3 << 14)
-
-#define SARMODE0_SRTS0 (0x1 << 23)
-#define SARMODE0_SRTS1 (0x1 << 24)
-
-#define SARMODE0_RUN (0x1 << 25)
-
-#define SARMODE0_UNLOCK (0x1 << 26)
-#define SARMODE0_CWRE (0x1 << 27)
-
-
-#define SARMODE0_INTMODE_READCLEAR (0x0 << 28)
-#define SARMODE0_INTMODE_READNOCLEAR (0x1 << 28)
-#define SARMODE0_INTMODE_READNOCLEARINHIBIT (0x2 << 28)
-#define SARMODE0_INTMODE_READCLEARINHIBIT (0x3 << 28) /* Tell me you don't believe me. */
-
-#define SARMODE0_GINT (0x1 << 30)
-#define SARMODE0_SHADEN (0x1 << 31)
-
-
-#define SARMODE1 0x60
-
-
-#define SARMODE1_TRTL_SHIFT 0 /* Program to 0 */
-#define SARMODE1_RRTL_SHIFT 4 /* Program to 0 */
-
-#define SARMODE1_TAGM (0x1 << 8) /* Program to 0 */
-
-#define SARMODE1_HECM0 (0x1 << 9)
-#define SARMODE1_HECM1 (0x1 << 10)
-#define SARMODE1_HECM2 (0x1 << 11)
-
-#define SARMODE1_GFCE (0x1 << 14)
-#define SARMODE1_GFCR (0x1 << 15)
-#define SARMODE1_PMS (0x1 << 18)
-#define SARMODE1_GPRI (0x1 << 19)
-#define SARMODE1_GPAS (0x1 << 20)
-#define SARMODE1_GVAS (0x1 << 21)
-#define SARMODE1_GNAM (0x1 << 22)
-#define SARMODE1_GPLEN (0x1 << 23)
-#define SARMODE1_DUMPE (0x1 << 24)
-#define SARMODE1_OAMCRC (0x1 << 25)
-#define SARMODE1_DCOAM (0x1 << 26)
-#define SARMODE1_DCRM (0x1 << 27)
-#define SARMODE1_TSTLP (0x1 << 28)
-#define SARMODE1_DEFHEC (0x1 << 29)
-
-
-#define ISR 0x64
-#define IUSR 0x68
-#define IMR 0x6c
-
-#define ISR_LPCO (0x1 << 0)
-#define ISR_DPCO (0x1 << 1)
-#define ISR_RBRQ0_W (0x1 << 2)
-#define ISR_RBRQ1_W (0x1 << 3)
-#define ISR_RBRQ2_W (0x1 << 4)
-#define ISR_RBRQ3_W (0x1 << 5)
-#define ISR_RBRQ0_NF (0x1 << 6)
-#define ISR_RBRQ1_NF (0x1 << 7)
-#define ISR_RBRQ2_NF (0x1 << 8)
-#define ISR_RBRQ3_NF (0x1 << 9)
-#define ISR_BFP_SC (0x1 << 10)
-#define ISR_INIT (0x1 << 11)
-#define ISR_INIT_ERR (0x1 << 12) /* Documented as "reserved" */
-#define ISR_USCEO (0x1 << 13)
-#define ISR_UPEC0 (0x1 << 14)
-#define ISR_VPFCO (0x1 << 15)
-#define ISR_CRCCO (0x1 << 16)
-#define ISR_HECO (0x1 << 17)
-#define ISR_TBRQ_W (0x1 << 18)
-#define ISR_TBRQ_NF (0x1 << 19)
-#define ISR_CTPQ_E (0x1 << 20)
-#define ISR_GFC_C0 (0x1 << 21)
-#define ISR_PCI_FTL (0x1 << 22)
-#define ISR_CSQ_W (0x1 << 23)
-#define ISR_CSQ_NF (0x1 << 24)
-#define ISR_EXT_INT (0x1 << 25)
-#define ISR_RXDMA_S (0x1 << 26)
-
-
-#define TMCONF 0x78
-/* Bits? */
-
-
-#define CALPRESCALE 0x7c
-/* Bits? */
-
-#define CELLOSCONF 0x84
-#define CELLOSCONF_COTS (0x1 << 28)
-#define CELLOSCONF_CEN (0x1 << 27)
-#define CELLOSCONF_SC8 (0x3 << 24)
-#define CELLOSCONF_SC4 (0x2 << 24)
-#define CELLOSCONF_SC2 (0x1 << 24)
-#define CELLOSCONF_SC1 (0x0 << 24)
-
-#define CELLOSCONF_COBS (0x1 << 16)
-#define CELLOSCONF_COPK (0x1 << 8)
-#define CELLOSCONF_COST (0x1 << 0)
-/* Bits? */
-
-#define RAS0 0x1bc
-#define RAS0_DCD_XHLT (0x1 << 31)
-
-#define RAS0_VPSEL (0x1 << 16)
-#define RAS0_VCSEL (0x1 << 0)
-
-#define RAS1 0x1c0
-#define RAS1_UTREG (0x1 << 5)
-
-
-#define DMAMR 0x1cc
-#define DMAMR_TX_MODE_FULL (0x0 << 0)
-#define DMAMR_TX_MODE_PART (0x1 << 0)
-#define DMAMR_TX_MODE_NONE (0x2 << 0) /* And 3 */
-
-
-
-#define RAS2 0x280
-
-#define RAS2_NNI (0x1 << 0)
-#define RAS2_USEL (0x1 << 1)
-#define RAS2_UBS (0x1 << 2)
-
-
-
-struct fs_transmit_config {
- u32 flags;
- u32 atm_hdr;
- u32 TMC[4];
- u32 spec;
- u32 rtag[3];
-};
-
-#define TC_FLAGS_AAL5 (0x0 << 29)
-#define TC_FLAGS_TRANSPARENT_PAYLOAD (0x1 << 29)
-#define TC_FLAGS_TRANSPARENT_CELL (0x2 << 29)
-#define TC_FLAGS_STREAMING (0x1 << 28)
-#define TC_FLAGS_PACKET (0x0)
-#define TC_FLAGS_TYPE_ABR (0x0 << 22)
-#define TC_FLAGS_TYPE_CBR (0x1 << 22)
-#define TC_FLAGS_TYPE_VBR (0x2 << 22)
-#define TC_FLAGS_TYPE_UBR (0x3 << 22)
-#define TC_FLAGS_CAL0 (0x0 << 20)
-#define TC_FLAGS_CAL1 (0x1 << 20)
-#define TC_FLAGS_CAL2 (0x2 << 20)
-#define TC_FLAGS_CAL3 (0x3 << 20)
-
-
-#define RC_FLAGS_NAM (0x1 << 13)
-#define RC_FLAGS_RXBM_PSB (0x0 << 14)
-#define RC_FLAGS_RXBM_CIF (0x1 << 14)
-#define RC_FLAGS_RXBM_PMB (0x2 << 14)
-#define RC_FLAGS_RXBM_STR (0x4 << 14)
-#define RC_FLAGS_RXBM_SAF (0x6 << 14)
-#define RC_FLAGS_RXBM_POS (0x6 << 14)
-#define RC_FLAGS_BFPS (0x1 << 17)
-
-#define RC_FLAGS_BFPS_BFP (0x1 << 17)
-
-#define RC_FLAGS_BFPS_BFP0 (0x0 << 17)
-#define RC_FLAGS_BFPS_BFP1 (0x1 << 17)
-#define RC_FLAGS_BFPS_BFP2 (0x2 << 17)
-#define RC_FLAGS_BFPS_BFP3 (0x3 << 17)
-#define RC_FLAGS_BFPS_BFP4 (0x4 << 17)
-#define RC_FLAGS_BFPS_BFP5 (0x5 << 17)
-#define RC_FLAGS_BFPS_BFP6 (0x6 << 17)
-#define RC_FLAGS_BFPS_BFP7 (0x7 << 17)
-#define RC_FLAGS_BFPS_BFP01 (0x8 << 17)
-#define RC_FLAGS_BFPS_BFP23 (0x9 << 17)
-#define RC_FLAGS_BFPS_BFP45 (0xa << 17)
-#define RC_FLAGS_BFPS_BFP67 (0xb << 17)
-#define RC_FLAGS_BFPS_BFP07 (0xc << 17)
-#define RC_FLAGS_BFPS_BFP27 (0xd << 17)
-#define RC_FLAGS_BFPS_BFP47 (0xe << 17)
-
-#define RC_FLAGS_BFPP (0x1 << 21)
-#define RC_FLAGS_TEVC (0x1 << 22)
-#define RC_FLAGS_TEP (0x1 << 23)
-#define RC_FLAGS_AAL5 (0x0 << 24)
-#define RC_FLAGS_TRANSP (0x1 << 24)
-#define RC_FLAGS_TRANSC (0x2 << 24)
-#define RC_FLAGS_ML (0x1 << 27)
-#define RC_FLAGS_TRBRM (0x1 << 28)
-#define RC_FLAGS_PRI (0x1 << 29)
-#define RC_FLAGS_HOAM (0x1 << 30)
-#define RC_FLAGS_CRC10 (0x1 << 31)
-
-
-#define RAC 0x1c8
-#define RAM 0x1c4
-
-
-
-/************************************************************************
- * Then the datastructures that the DRIVER uses. *
- ************************************************************************/
-
-#define TXQ_NENTRIES 32
-#define RXRQ_NENTRIES 1024
-
-
-struct fs_vcc {
- int channo;
- wait_queue_head_t close_wait;
- struct sk_buff *last_skb;
-};
-
-
-struct queue {
- struct FS_QENTRY *sa, *ea;
- int offset;
-};
-
-struct freepool {
- int offset;
- int bufsize;
- int nr_buffers;
- int n;
-};
-
-
-struct fs_dev {
- struct fs_dev *next; /* other FS devices */
- int flags;
-
- unsigned char irq; /* IRQ */
- struct pci_dev *pci_dev; /* PCI stuff */
- struct atm_dev *atm_dev;
- struct timer_list timer;
-
- unsigned long hw_base; /* mem base address */
- void __iomem *base; /* Mapping of base address */
- int channo;
- unsigned long channel_mask;
-
- struct queue hp_txq, lp_txq, tx_relq, st_q;
- struct freepool rx_fp[FS_NR_FREE_POOLS];
- struct queue rx_rq[FS_NR_RX_QUEUES];
-
- int nchannels;
- struct atm_vcc **atm_vccs;
- void *tx_inuse;
- int ntxpckts;
-};
-
-
-
-
-/* Number of channesl that the FS50 supports. */
-#define FS50_CHANNEL_BITS 5
-#define FS50_NR_CHANNELS (1 << FS50_CHANNEL_BITS)
-
-
-#define FS_DEV(atm_dev) ((struct fs_dev *) (atm_dev)->dev_data)
-#define FS_VCC(atm_vcc) ((struct fs_vcc *) (atm_vcc)->dev_data)
-
-
-#define FS_IS50 0x1
-#define FS_IS155 0x2
-
-#define IS_FS50(dev) (dev->flags & FS_IS50)
-#define IS_FS155(dev) (dev->flags & FS_IS155)
-
-/* Within limits this is user-configurable. */
-/* Note: Currently the sum (10 -> 1k channels) is hardcoded in the driver. */
-#define FS155_VPI_BITS 4
-#define FS155_VCI_BITS 6
-
-#define FS155_CHANNEL_BITS (FS155_VPI_BITS + FS155_VCI_BITS)
-#define FS155_NR_CHANNELS (1 << FS155_CHANNEL_BITS)
projects / linux-2.6-microblaze.git / commitdiff