diff options
| -rw-r--r-- | arch/mips/configs/gpr_defconfig | 1 | ||||
| -rw-r--r-- | arch/mips/configs/mtx1_defconfig | 1 | ||||
| -rw-r--r-- | drivers/atm/Kconfig | 10 | ||||
| -rw-r--r-- | drivers/atm/Makefile | 1 | ||||
| -rw-r--r-- | drivers/atm/firestream.c | 2057 | ||||
| -rw-r--r-- | drivers/atm/firestream.h | 502 |
6 files changed, 0 insertions, 2572 deletions
diff --git a/arch/mips/configs/gpr_defconfig b/arch/mips/configs/gpr_defconfig index b0489437621a..605e778dff74 100644 --- a/arch/mips/configs/gpr_defconfig +++ b/arch/mips/configs/gpr_defconfig @@ -178,7 +178,6 @@ CONFIG_NETCONSOLE=m CONFIG_ATM_TCP=m CONFIG_ATM_LANAI=m CONFIG_ATM_ENI=m -CONFIG_ATM_FIRESTREAM=m CONFIG_ATM_ZATM=m CONFIG_ATM_NICSTAR=m CONFIG_ATM_IDT77252=m diff --git a/arch/mips/configs/mtx1_defconfig b/arch/mips/configs/mtx1_defconfig index c98099f0b354..de95e7fe5a77 100644 --- a/arch/mips/configs/mtx1_defconfig +++ b/arch/mips/configs/mtx1_defconfig @@ -255,7 +255,6 @@ CONFIG_ARCNET_COM20020_CS=m CONFIG_ATM_TCP=m CONFIG_ATM_LANAI=m CONFIG_ATM_ENI=m -CONFIG_ATM_FIRESTREAM=m CONFIG_ATM_ZATM=m CONFIG_ATM_NICSTAR=m CONFIG_ATM_IDT77252=m diff --git a/drivers/atm/Kconfig b/drivers/atm/Kconfig index 7be08e24955c..360c98ad29eb 100644 --- a/drivers/atm/Kconfig +++ b/drivers/atm/Kconfig @@ -146,16 +146,6 @@ config ATM_ENI_BURST_RX_2W try this if you have disabled 4W and 8W bursts. Enabling 2W if 4W or 8W are also set may or may not improve throughput. -config ATM_FIRESTREAM - tristate "Fujitsu FireStream (FS50/FS155) " - depends on PCI && VIRT_TO_BUS - help - Driver for the Fujitsu FireStream 155 (MB86697) and - FireStream 50 (MB86695) ATM PCI chips. - - To compile this driver as a module, choose M here: the module will - be called firestream. - config ATM_ZATM tristate "ZeitNet ZN1221/ZN1225" depends on PCI && VIRT_TO_BUS diff --git a/drivers/atm/Makefile b/drivers/atm/Makefile index 99ecbc280643..7d38fdaddd09 100644 --- a/drivers/atm/Makefile +++ b/drivers/atm/Makefile @@ -26,7 +26,6 @@ endif obj-$(CONFIG_ATM_DUMMY) += adummy.o obj-$(CONFIG_ATM_TCP) += atmtcp.o -obj-$(CONFIG_ATM_FIRESTREAM) += firestream.o obj-$(CONFIG_ATM_LANAI) += lanai.o obj-$(CONFIG_ATM_HE) += he.o 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->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"); - - - diff --git a/drivers/atm/firestream.h b/drivers/atm/firestream.h deleted file mode 100644 index 6d684160808d..000000000000 --- a/drivers/atm/firestream.h +++ /dev/null @@ -1,502 +0,0 @@ -/* 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) |