lanai.c
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上传日期:2013-04-10
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- /* lanai.c -- Copyright 1999 by Mitchell Blank Jr <mitch@sfgoth.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * This driver supports ATM cards based on the Efficient "Lanai"
- * chipset such as the Speedstream 3010 and the ENI-25p. The
- * Speedstream 3060 is currently not supported since we don't
- * have the code to drive the on-board Alcatel DSL chipset (yet).
- *
- * Thanks to Efficient for supporting this project with hardware,
- * documentation, and by answering my questions.
- *
- * Things not working yet:
- *
- * o We're only set up to compile as a module currently. i.e.
- * you should put the source in drivers/atm/lanai.c and then
- * just do "make drivers/atm/lanai.o" from the main
- * source directory. This will produce a drivers/atm/lanai.o
- * file suitable for insmod'ing
- *
- * o We don't support the Speedstream 3060 yet - this card has
- * an on-board DSL modem chip by Alcatel and the driver will
- * need some extra code added to handle it
- *
- * o Note that due to limitations of the Lanai only one VCC can be
- * in CBR at once
- *
- * o We don't currently parse the EEPROM at all. The code is all
- * there as per the spec, but it doesn't actually work. I think
- * there may be some issues with the docs. Anyway, do NOT
- * enable it yet - bugs in that code may actually damage your
- * hardware! Because of this you should hardware an ESI before
- * trying to use this in a LANE or MPOA environment.
- *
- * o AAL0 is stubbed in but the actual rx/tx path isn't written yet:
- * vcc_tx_aal0() needs to send or queue a SKB
- * vcc_tx_unqueue_aal0() needs to attempt to send queued SKBs
- * vcc_rx_aal0() needs to handle AAL0 interrupts
- * This isn't too much work - I just wanted to get other things
- * done first.
- *
- * o lanai_change_qos() isn't written yet
- *
- * o There aren't any ioctl's yet -- I'd like to eventually support
- * setting loopback and LED modes that way. (see lanai_ioctl)
- *
- * o If the segmentation engine or DMA gets shut down we should restart
- * card as per section 17.0i. (see lanai_reset)
- *
- * o setsockopt(SO_CIRANGE) isn't done (although despite what the
- * API says it isn't exactly commonly implemented)
- */
- /* Version history:
- * v.0.02 -- 11-JAN-2000 -- Endian fixes
- * v.0.01 -- 30-NOV-1999 -- Initial release
- */
- #include <linux/module.h>
- #include <linux/mm.h>
- #include <linux/atmdev.h>
- #include <asm/io.h>
- #include <asm/byteorder.h>
- #include <linux/spinlock.h>
- #include <linux/pci.h>
- #include <linux/init.h>
- #include <linux/delay.h>
- #include <linux/interrupt.h>
- #ifndef PCI_VENDOR_ID_EF_ATM_LANAI2
- /* These need to eventually go into <linux/pci.h> - they're here for now */
- #define PCI_VENDOR_ID_EF_ATM_LANAI2 0x0003
- #define PCI_VENDOR_ID_EF_ATM_LANAIHB 0x0005
- #endif
- /* -------------------- TUNABLE PARAMATERS: */
- /*
- * Maximum number of VCIs per card. Setting it lower could theoretically
- * save some memory, but since we allocate our vcc list with get_free_pages,
- * it's not really likely for most architectures
- */
- #define NUM_VCI (1024)
- /*
- * Enable extra debugging
- */
- #define DEBUG
- /*
- * Debug _all_ register operations with card, except the memory test.
- * Also disables the timed poll to prevent extra chattiness. This
- * isn't for normal use
- */
- #undef DEBUG_RW
- /*
- * The programming guide specifies a full test of the on-board SRAM
- * at initialization time. Undefine to remove this
- */
- #define FULL_MEMORY_TEST
- /*
- * This is the number of (4 byte) service entries that we will
- * try to allocate at startup. Note that we will end up with
- * one PAGE_SIZE's worth regardless of what this is set to
- */
- #define SERVICE_ENTRIES (1024)
- /* TODO: make above a module load-time option */
- /*
- * We normally read the onboard EEPROM in order to discover our MAC
- * address. Undefine to _not_ do this
- */
- /* #define READ_EEPROM */ /* ***DONT ENABLE YET*** */
- /* TODO: make above a module load-time option (also) */
- /*
- * Depth of TX fifo (in 128 byte units; range 2-31)
- * Smaller numbers are better for network latency
- * Larger numbers are better for PCI latency
- * I'm really sure where the best tradeoff is, but the BSD driver uses
- * 7 and it seems to work ok.
- */
- #define TX_FIFO_DEPTH (7)
- /* TODO: make above a module load-time option */
- /*
- * How often (in jiffies) we will try to unstick stuck connections -
- * shouldn't need to happen much
- */
- #define LANAI_POLL_PERIOD (10*HZ)
- /* TODO: make above a module load-time option */
- /*
- * When allocating an AAL5 receiving buffer, try to make it at least
- * large enough to hold this many max_sdu sized PDUs
- */
- #define AAL5_RX_MULTIPLIER (3)
- /* TODO: make above a module load-time option */
- /*
- * Same for transmitting buffer
- */
- #define AAL5_TX_MULTIPLIER (3)
- /* TODO: make above a module load-time option */
- /*
- * When allocating an AAL0 transmiting buffer, how many cells should fit.
- * Remember we'll end up with a PAGE_SIZE of them anyway, so this isn't
- * really critical
- */
- #define AAL0_TX_MULTIPLIER (40)
- /* TODO: make above a module load-time option */
- /*
- * How large should we make the AAL0 receiving buffer. Remember that this
- * is shared between all AAL0 VC's
- */
- #define AAL0_RX_BUFFER_SIZE (PAGE_SIZE)
- /* TODO: make above a module load-time option */
- /*
- * Should we use Lanai's "powerdown" feature when no vcc's are bound?
- */
- /* #define USE_POWERDOWN */
- /* TODO: make above a module load-time option (also) */
- /* -------------------- DEBUGGING AIDS: */
- #define DEV_LABEL "lanai"
- #ifdef DEBUG
- #define DPRINTK(format, args...)
- printk(KERN_DEBUG DEV_LABEL ": " format, ##args)
- #define APRINTK(truth, format, args...)
- do {
- if (!(truth))
- printk(KERN_ERR DEV_LABEL ": " format, ##args);
- } while (0)
- #else /* !DEBUG */
- #define DPRINTK(format, args...)
- #define APRINTK(truth, format, args...)
- #endif /* DEBUG */
- #ifdef DEBUG_RW
- #define RWDEBUG(format, args...)
- printk(KERN_DEBUG DEV_LABEL ": " format, ##args)
- #else /* !DEBUG_RW */
- #define RWDEBUG(format, args...)
- #endif
- /* -------------------- DATA DEFINITIONS: */
- #define LANAI_MAPPING_SIZE (0x40000)
- #define LANAI_EEPROM_SIZE (128)
- typedef int vci_t;
- typedef unsigned long bus_addr_t;
- /* A bitfield large enough for NUM_VCI */
- #define VCI_BITFIELD_NELEM ((NUM_VCI + BITS_PER_LONG - 1) / BITS_PER_LONG)
- typedef struct {
- unsigned long ul[VCI_BITFIELD_NELEM];
- } vci_bitfield;
- /* DMA buffer in host memory for TX, RX, or service list. */
- struct lanai_buffer {
- u32 *start; /* From get_free_pages */
- u32 *end; /* One past last byte */
- u32 *ptr; /* Pointer to current host location */
- int order; /* log2(size/PAGE_SIZE) */
- };
- struct lanai_vcc_stats {
- unsigned rx_nomem;
- union {
- struct {
- unsigned rx_badlen;
- unsigned service_trash;
- unsigned service_stream;
- unsigned service_rxcrc;
- } aal5;
- struct {
- } aal0;
- } x;
- };
- struct lanai_dev; /* Forward declaration */
- /*
- * This is the card-specific per-vcc data. Note that unlike some other
- * drivers there is NOT a 1-to-1 correspondance between these and
- * atm_vcc's - each one of these represents an actual 2-way vcc, but
- * an atm_vcc can be 1-way and share with a 1-way vcc in the other
- * direction. To make it weirder, there can even be 0-way vccs
- * bound to us, waiting to do a change_qos
- */
- struct lanai_vcc {
- bus_addr_t vbase; /* Base of VCC's registers */
- struct lanai_vcc_stats stats;
- int nref; /* # of atm_vcc's who reference us */
- vci_t vci;
- struct {
- struct lanai_buffer buf;
- struct atm_vcc *atmvcc; /* atm_vcc who is receiver */
- } rx;
- struct {
- struct lanai_buffer buf;
- struct atm_vcc *atmvcc; /* atm_vcc who is transmitter */
- int endptr; /* last endptr from service entry */
- struct sk_buff_head backlog;
- struct sk_buff *inprogress; /* We're streaming this PDU */
- unsigned char *pptr; /* Where we are in above */
- int inprogleft; /* Bytes left to send "inprogress" */
- void (*unqueue)(struct lanai_dev *, struct lanai_vcc *, int);
- } tx;
- };
- enum lanai_type {
- lanai2 = PCI_VENDOR_ID_EF_ATM_LANAI2,
- lanaihb = PCI_VENDOR_ID_EF_ATM_LANAIHB
- };
- struct lanai_dev_stats {
- unsigned ovfl_trash; /* # of cells dropped - buffer overflow */
- unsigned vci_trash; /* # of cells dropped - closed vci */
- unsigned hec_err; /* # of cells dropped - bad HEC */
- unsigned atm_ovfl; /* # of cells dropped - rx fifo overflow */
- unsigned pcierr_parity_detect;
- unsigned pcierr_serr_set;
- unsigned pcierr_master_abort;
- unsigned pcierr_m_target_abort;
- unsigned pcierr_s_target_abort;
- unsigned pcierr_master_parity;
- unsigned service_novcc_rx;
- unsigned service_novcc_tx;
- unsigned service_notx;
- unsigned service_norx;
- unsigned service_rxnotaal5;
- unsigned dma_reenable;
- unsigned card_reset;
- };
- struct lanai_dev {
- bus_addr_t base;
- struct lanai_dev_stats stats;
- struct lanai_buffer service;
- struct lanai_vcc **vccs;
- #ifdef USE_POWERDOWN
- int nbound; /* number of bound vccs */
- #endif
- enum lanai_type type;
- vci_t num_vci; /* Currently just NUM_VCI */
- u8 eeprom[LANAI_EEPROM_SIZE];
- u32 serialno, magicno;
- struct pci_dev *pci;
- vci_bitfield backlog_vccs; /* VCCs that are backlogged */
- vci_bitfield transmit_ready; /* VCCs that have transmit space */
- struct timer_list timer;
- int naal0;
- struct lanai_buffer aal0buf; /* AAL0 RX buffers */
- u32 conf1, conf2; /* CONFIG[12] registers */
- u32 status; /* STATUS register */
- spinlock_t txlock;
- spinlock_t servicelock;
- struct atm_vcc *cbrvcc;
- int number;
- int board_rev;
- u8 pci_revision;
- /* TODO - look at race conditions with maintence of conf1/conf2 */
- /* TODO - transmit locking: should we use _irq not _irqsave? */
- /* TODO - organize above in some rational fashion (see <asm/cache.h>) */
- };
- /* -------------------- VCI_BITFIELD UTILITIES: */
- /*
- * These functions assume that BITS_PER_LONG is a power of two, which
- * should be safe
- */
- #if (BITS_PER_LONG & (BITS_PER_LONG - 1))
- #error lanai driver requires type long to have a power of two number of bits
- #endif
- /*
- * In vci_bitfield_{set,clear} we do the operation in three
- * parts to ensure that gcc doesn't cast anything down to
- * 32 bits (and then sign extend them later) on 64-bit
- * platforms like the alpha
- */
- static inline void vci_bitfield_set(vci_bitfield *bf, vci_t vci)
- {
- unsigned long bit = 1;
- bit <<= (unsigned long) (vci & (BITS_PER_LONG - 1));
- bf->ul[vci / BITS_PER_LONG] |= bit;
- }
- static inline void vci_bitfield_clear(vci_bitfield *bf, vci_t vci)
- {
- unsigned long bit = 1;
- bit <<= (unsigned long) (vci & (BITS_PER_LONG - 1));
- bf->ul[vci / BITS_PER_LONG] &= ~bit;
- }
- static inline void vci_bitfield_init(vci_bitfield *bf)
- {
- memset(bf, 0, sizeof(*bf));
- }
- static void vci_bitfield_iterate(struct lanai_dev *lanai,
- const vci_bitfield *bf, void (*func)(struct lanai_dev *,vci_t vci))
- {
- vci_t vci;
- unsigned long mask;
- const unsigned long *lp = &(bf->ul[0]);
- for (vci = 0; vci < NUM_VCI; lp++)
- if (*lp == 0)
- vci += BITS_PER_LONG;
- else
- for (mask = 1; mask != 0; mask <<= 1, vci++)
- if (*lp & mask)
- func(lanai, vci);
- }
- /* -------------------- BUFFER UTILITIES: */
- /*
- * Lanai needs DMA buffers aligned to 256 bytes of at least 1024 bytes -
- * we assume that any page allocation will do. I'm sure this is
- * never going to be a problem, but it's good to document assumtions
- */
- #if PAGE_SIZE < 1024
- #error PAGE_SIZE too small to support LANAI chipset
- #endif
- /*
- * We also assume that the maximum buffer size will be some number
- * of whole pages, although that wouldn't be too hard to fix
- */
- #if PAGE_SIZE > (128 * 1024)
- #error PAGE_SIZE too large to support LANAI chipset
- #endif
- /* Convert a size to "order" for __get_free_pages */
- static int bytes_to_order(int bytes)
- {
- int order = 0;
- if (bytes > (128 * 1024))
- bytes = 128 * 1024; /* Max buffer size for lanai */
- while ((PAGE_SIZE << order) < bytes)
- order++;
- return order;
- }
- /*
- * Allocate a buffer in host RAM for service list, RX, or TX
- * Returns buf->order<0 if no memory
- * Note that the size will be rounded up to an "order" of pages, and
- * if we can't allocate that we'll settle for something smaller
- * until minbytes
- *
- * NOTE: buffer must be 32-bit DMA capable - when linux can
- * make distinction, this will need tweaking for this
- * to work on BIG memory machines.
- */
- static void lanai_buf_allocate(struct lanai_buffer *buf,
- int bytes, int minbytes)
- {
- unsigned long address;
- int order = bytes_to_order(bytes);
- do {
- address = __get_free_pages(GFP_KERNEL, order);
- if (address != 0) { /* Success */
- bytes = PAGE_SIZE << order;
- buf->start = buf->ptr = (u32 *) address;
- buf->end = (u32 *) (address + bytes);
- memset((void *) address, 0, bytes);
- break;
- }
- if ((PAGE_SIZE << --order) < minbytes)
- order = -1; /* Too small - give up */
- } while (order >= 0);
- buf->order = order;
- }
- static inline void lanai_buf_deallocate(struct lanai_buffer *buf)
- {
- if (buf->order >= 0) {
- APRINTK(buf->start != 0, "lanai_buf_deallocate: start==0!n");
- free_pages((unsigned long) buf->start, buf->order);
- buf->start = buf->end = buf->ptr = 0;
- }
- }
- /* size of buffer in bytes */
- static inline int lanai_buf_size(const struct lanai_buffer *buf)
- {
- return ((unsigned long) buf->end) - ((unsigned long) buf->start);
- }
- /* size of buffer as "card order" (0=1k .. 7=128k) */
- static inline int lanai_buf_size_cardorder(const struct lanai_buffer *buf)
- {
- return buf->order + PAGE_SHIFT - 10;
- }
- /* DMA-able address for this buffer */
- static unsigned long lanai_buf_dmaaddr(const struct lanai_buffer *buf)
- {
- unsigned long r = virt_to_bus(buf->start);
- APRINTK((r & ~0xFFFFFF00) == 0, "bad dmaaddr: 0x%lxn", (long) r);
- return r;
- }
- /* -------------------- HANDLE BACKLOG_VCCS BITFIELD: */
- static inline void vcc_mark_backlogged(struct lanai_dev *lanai,
- const struct lanai_vcc *lvcc)
- {
- APRINTK(lvcc->vbase != 0, "vcc_mark_backlogged: zero vbase!n");
- vci_bitfield_set(&lanai->backlog_vccs, lvcc->vci);
- }
- static inline void vcc_unmark_backlogged(struct lanai_dev *lanai,
- const struct lanai_vcc *lvcc)
- {
- APRINTK(lvcc->vbase != 0, "vcc_unmark_backlogged: zero vbase!n");
- vci_bitfield_clear(&lanai->backlog_vccs, lvcc->vci);
- }
- static inline void vcc_backlog_init(struct lanai_dev *lanai)
- {
- vci_bitfield_init(&lanai->backlog_vccs);
- }
- static inline int vcc_is_backlogged(/*const*/ struct lanai_vcc *lvcc)
- {
- return lvcc->tx.inprogress != NULL ||
- !skb_queue_empty(&lvcc->tx.backlog);
- }
- /* -------------------- PORT I/O UTILITIES: */
- /* Registers (and their bit-fields) */
- enum lanai_register {
- Reset_Reg = 0x00, /* Reset; read for chip type; bits: */
- #define RESET_GET_BOARD_REV(x) (((x)>> 0)&0x03) /* Board revision */
- #define RESET_GET_BOARD_ID(x) (((x)>> 2)&0x03) /* Board ID */
- #define BOARD_ID_LANAI256 (0) /* 25.6M adaptor card */
- Endian_Reg = 0x04, /* Endian setting */
- IntStatus_Reg = 0x08, /* Interrupt status */
- IntStatusMasked_Reg = 0x0C, /* Interrupt status (masked) */
- IntAck_Reg = 0x10, /* Interrupt acknowledge */
- IntAckMasked_Reg = 0x14, /* Interrupt acknowledge (masked) */
- IntStatusSet_Reg = 0x18, /* Get status + enable/disable */
- IntStatusSetMasked_Reg = 0x1C, /* Get status + en/di (masked) */
- IntControlEna_Reg = 0x20, /* Interrupt control enable */
- IntControlDis_Reg = 0x24, /* Interrupt control disable */
- Status_Reg = 0x28, /* Status */
- #define STATUS_PROMDATA (0x00000001) /* PROM_DATA pin */
- #define STATUS_WAITING (0x00000002) /* Interrupt being delayed */
- #define STATUS_SOOL (0x00000004) /* SOOL alarm */
- #define STATUS_LOCD (0x00000008) /* LOCD alarm */
- #define STATUS_LED (0x00000010) /* LED (HAPPI) output */
- #define STATUS_GPIN (0x00000020) /* GPIN pin */
- #define STATUS_BUTTBUSY (0x00000040) /* Butt register is pending */
- Config1_Reg = 0x2C, /* Config word 1; bits: */
- #define CONFIG1_PROMDATA (0x00000001) /* PROM_DATA pin */
- #define CONFIG1_PROMCLK (0x00000002) /* PROM_CLK pin */
- #define CONFIG1_SET_READMODE(x) ((x)*0x004) /* PCI BM reads; values: */
- #define READMODE_PLAIN (0) /* Plain memory read */
- #define READMODE_LINE (2) /* Memory read line */
- #define READMODE_MULTIPLE (3) /* Memory read multiple */
- #define CONFIG1_DMA_ENABLE (0x00000010) /* Turn on DMA */
- #define CONFIG1_POWERDOWN (0x00000020) /* Turn off clocks */
- #define CONFIG1_SET_LOOPMODE(x) ((x)*0x080) /* Clock&loop mode; values: */
- #define LOOPMODE_NORMAL (0) /* Normal - no loop */
- #define LOOPMODE_TIME (1)
- #define LOOPMODE_DIAG (2)
- #define LOOPMODE_LINE (3)
- #define CONFIG1_MASK_LOOPMODE (0x00000180)
- #define CONFIG1_SET_LEDMODE(x) ((x)*0x0200) /* Mode of LED; values: */
- #define LEDMODE_NOT_SOOL (0) /* !SOOL */
- #define LEDMODE_OFF (1) /* 0 */
- #define LEDMODE_ON (2) /* 1 */
- #define LEDMODE_NOT_LOCD (3) /* !LOCD */
- #define LEDMORE_GPIN (4) /* GPIN */
- #define LEDMODE_NOT_GPIN (7) /* !GPIN */
- #define CONFIG1_MASK_LEDMODE (0x00000E00)
- #define CONFIG1_GPOUT1 (0x00001000) /* Toggle for reset */
- #define CONFIG1_GPOUT2 (0x00002000) /* Loopback PHY */
- #define CONFIG1_GPOUT3 (0x00004000) /* Loopback lanai */
- Config2_Reg = 0x30, /* Config word 2; bits: */
- #define CONFIG2_HOWMANY (0x00000001) /* >512 VCIs? */
- #define CONFIG2_PTI7_MODE (0x00000002) /* Make PTI=7 RM, not OAM */
- #define CONFIG2_VPI_CHK_DIS (0x00000004) /* Ignore RX VPI value */
- #define CONFIG2_HEC_DROP (0x00000008) /* Drop cells w/ HEC errors */
- #define CONFIG2_VCI0_NORMAL (0x00000010) /* Treat VCI=0 normally */
- #define CONFIG2_CBR_ENABLE (0x00000020) /* Deal with CBR traffic */
- #define CONFIG2_TRASH_ALL (0x00000040) /* Trashing incoming cells */
- #define CONFIG2_TX_DISABLE (0x00000080) /* Trashing outgoing cells */
- #define CONFIG2_SET_TRASH (0x00000100) /* Turn trashing on */
- Statistics_Reg = 0x34, /* Statistics; bits: */
- #define STATS_GET_FIFO_OVFL(x) (((x)>> 0)&0xFF) /* FIFO overflowed */
- #define STATS_GET_HEC_ERR(x) (((x)>> 8)&0xFF) /* HEC was bad */
- #define STATS_GET_BAD_VCI(x) (((x)>>16)&0xFF) /* VCI not open */
- #define STATS_GET_BUF_OVFL(x) (((x)>>24)&0xFF) /* VCC buffer full */
- ServiceStuff_Reg = 0x38, /* Service stuff; bits: */
- #define SSTUFF_SET_SIZE(x) ((x)*0x20000000) /* size of service buffer */
- #define SSTUFF_SET_ADDR(x) ((x)>>8) /* set address of buffer */
- ServWrite_Reg = 0x3C, /* ServWrite Pointer */
- ServRead_Reg = 0x40, /* ServRead Pointer */
- TxDepth_Reg = 0x44, /* FIFO Transmit Depth */
- Butt_Reg = 0x48, /* Butt register */
- CBR_ICG_Reg = 0x50,
- CBR_PTR_Reg = 0x54,
- PingCount_Reg = 0x58, /* Ping count */
- DMA_Addr_Reg = 0x5C /* DMA address */
- };
- static inline bus_addr_t reg_addr(const struct lanai_dev *lanai,
- enum lanai_register reg)
- {
- return lanai->base + (bus_addr_t) reg;
- }
- static inline u32 reg_read(const struct lanai_dev *lanai,
- enum lanai_register reg)
- {
- u32 t;
- t = readl(reg_addr(lanai, reg));
- RWDEBUG("R [0x%08X] 0x%02X = 0x%08Xn", (unsigned int) lanai->base,
- (int) reg, t);
- return t;
- }
- static inline void reg_write(const struct lanai_dev *lanai, u32 val,
- enum lanai_register reg)
- {
- RWDEBUG("W [0x%08X] 0x%02X < 0x%08Xn", (unsigned int) lanai->base,
- (int) reg, val);
- writel(val, reg_addr(lanai, reg));
- mdelay(1);
- }
- static inline void conf1_write(const struct lanai_dev *lanai)
- {
- reg_write(lanai, lanai->conf1, Config1_Reg);
- }
- static inline void conf2_write(const struct lanai_dev *lanai)
- {
- reg_write(lanai, lanai->conf2, Config2_Reg);
- }
- static inline void reset_board(const struct lanai_dev *lanai)
- {
- DPRINTK("about to reset boardn");
- reg_write(lanai, 0, Reset_Reg);
- /*
- * If we don't delay a little while here then we can end up
- * leaving the card in a VERY weird state and lock up the
- * PCI bus. This isn't documented anywhere but I've convinced
- * myself after a lot of painful experimentation
- */
- udelay(5);
- }
- /* -------------------- VCC LIST LOCK: */
- /*
- * The linux-atm code disables local IRQs while managing the list of
- * VCCs on a card. This is good, but it doesn't save us against
- * SMP. Unfortunately, fixing this will require changes in the
- * API which will have to wait a little bit. It's a hard race to
- * trigger accidentally, so it isn't TOO horrible so far.
- *
- * One possible solution would be to have an rwlock which is
- * always grabbed _irq-style on writing. This would automatically
- * be grabbed (for writing) by the higher layers on things that
- * would result in a change in the vcc list (_open, _close,
- * probably _change_qos) - thus it would also protect the
- * higher-level list of vccs on each device (atm_dev->vccs).
- * The driver would be responsible for grabbing it as a read_lock
- * anytime it wants to consult its table of vccs - for instance
- * when handling an incoming PDU. This also explains why we would
- * probably want the write_lock while in _change_qos - to prevent
- * handling of PDUs while possibly in an inconsistant state.
- * Also, _send would grab the lock for reading.
- *
- * One problem with this is that _open and _close could no longer
- * do anything that might provoke a schedule. First, it would
- * force us to use GFP_ATOMIC memory (which is bad), but also
- * some devices pretty much require scheduling due to long
- * delays (see lanai_close for an example). So in this case
- * we need a way to schedule without losing the spinlock.
- * The cleanest way to do this is probably have a way to mark a
- * VCC as "in progress" so that the interrupt handler can
- * still disregard any traffic for it while _open or _close
- * are sleeping on it. Then it will need to be _open and
- * _close's job to relinquish the write_lock. Thus, the
- * lock could be dropped around the times that scheduling
- * might occur. Perhaps the _READY flag can be used for
- * this purpose.
- *
- * One short note about this "upper layer grabs, driver
- * relinquishes" write lock - since this needs to be
- * an _irq lock we're going to have problem saving
- * and restoring flags (_irqsave/_irqrestore). This
- * shouldn't be a problem, however - we must just
- * require that those syscalls are never called with
- * interrupts disabled so we can use the non-flags-saving
- * versions.
- *
- * Anyway, all of the above is vaporware currently - fixing
- * this right will require changes in the API and all of
- * the drivers - this will wait until 2.5.x most likely.
- * The following NOP macros are just here to mark where
- * the locks will be needed in the future.
- */
- #define vcclist_read_lock() do {} while (0)
- #define vcclist_read_unlock() do {} while (0)
- #define vcclist_write_lock() do {} while (0)
- #define vcclist_write_unlock() do {} while (0)
- /* -------------------- CARD SRAM UTILITIES: */
- /* The SRAM is mapped into normal PCI memory space - the only catch is
- * that it is only 16-bits wide but must be accessed as 32-bit. The
- * 16 high bits will be zero. We don't hide this, since they get
- * programmed mostly like discrete registers anyway
- */
- #define SRAM_START (0x20000)
- #define SRAM_BYTES (0x20000) /* Again, half don't really exist */
- static inline bus_addr_t sram_addr(const struct lanai_dev *lanai, int offset)
- {
- return lanai->base + SRAM_START + offset;
- }
- static inline u32 sram_read(const struct lanai_dev *lanai, int offset)
- {
- return readl(sram_addr(lanai, offset));
- }
- static inline void sram_write(const struct lanai_dev *lanai,
- u32 val, int offset)
- {
- writel(val, sram_addr(lanai, offset));
- }
- static int __init sram_test_word(
- const struct lanai_dev *lanai, int offset, u32 pattern)
- {
- u32 readback;
- sram_write(lanai, pattern, offset);
- readback = sram_read(lanai, offset);
- if (readback == pattern)
- return 0;
- printk(KERN_ERR DEV_LABEL
- "(itf %d): SRAM word at %d bad: wrote 0x%X, read 0x%Xn",
- lanai->number, offset, pattern, readback);
- return -EIO;
- }
- static int __init sram_test_pass(const struct lanai_dev *lanai, u32 pattern)
- {
- int offset, result = 0;
- for (offset = 0; offset < SRAM_BYTES && result == 0; offset += 4)
- result = sram_test_word(lanai, offset, pattern);
- return result;
- }
- static int __init sram_test_and_clear(const struct lanai_dev *lanai)
- {
- #ifdef FULL_MEMORY_TEST
- int result;
- DPRINTK("testing SRAMn");
- if ((result = sram_test_pass(lanai, 0x5555)) != 0)
- return result;
- if ((result = sram_test_pass(lanai, 0xAAAA)) != 0)
- return result;
- #endif
- DPRINTK("clearing SRAMn");
- return sram_test_pass(lanai, 0x0000);
- }
- /* -------------------- CARD-BASED VCC TABLE UTILITIES: */
- /* vcc table */
- enum lanai_vcc_offset {
- vcc_rxaddr1 = 0x00, /* Location1, plus bits: */
- #define RXADDR1_SET_SIZE(x) ((x)*0x0000100) /* size of RX buffer */
- #define RXADDR1_SET_RMMODE(x) ((x)*0x00800) /* RM cell action; values: */
- #define RMMODE_TRASH (0) /* discard */
- #define RMMODE_PRESERVE (1) /* input as AAL0 */
- #define RMMODE_PIPE (2) /* pipe to coscheduler */
- #define RMMODE_PIPEALL (3) /* pipe non-RM too */
- #define RXADDR1_OAM_PRESERVE (0x00002000) /* Input OAM cells as AAL0 */
- #define RXADDR1_SET_MODE(x) ((x)*0x0004000) /* Reassembly mode */
- #define RXMODE_TRASH (0) /* discard */
- #define RXMODE_AAL0 (1) /* non-AAL5 mode */
- #define RXMODE_AAL5 (2) /* AAL5, intr. each PDU */
- #define RXMODE_AAL5_STREAM (3) /* AAL5 w/o per-PDU intr */
- vcc_rxaddr2 = 0x04, /* Location2 */
- vcc_rxcrc1 = 0x08, /* RX CRC claculation space */
- vcc_rxcrc2 = 0x0C,
- vcc_rxwriteptr = 0x10, /* RX writeptr, plus bits: */
- #define RXWRITEPTR_LASTEFCI (0x00002000) /* Last PDU had EFCI bit */
- #define RXWRITEPTR_DROPPING (0x00004000) /* Had error, dropping */
- #define RXWRITEPTR_TRASHING (0x00008000) /* Trashing */
- vcc_rxbufstart = 0x14, /* RX bufstart, plus bits: */
- #define RXBUFSTART_CLP (0x00004000)
- #define RXBUFSTART_CI (0x00008000)
- vcc_rxreadptr = 0x18, /* RX readptr */
- vcc_txicg = 0x1C, /* TX ICG */
- vcc_txaddr1 = 0x20, /* Location1, plus bits: */
- #define TXADDR1_SET_SIZE(x) ((x)*0x0000100) /* size of TX buffer */
- #define TXADDR1_ABR (0x00008000) /* use ABR (doesn't work) */
- vcc_txaddr2 = 0x24, /* Location2 */
- vcc_txcrc1 = 0x28, /* TX CRC claculation space */
- vcc_txcrc2 = 0x2C,
- vcc_txreadptr = 0x30, /* TX Readptr, plus bits: */
- #define TXREADPTR_GET_PTR(x) ((x)&0x01FFF)
- #define TXREADPTR_MASK_DELTA (0x0000E000) /* ? */
- vcc_txendptr = 0x34, /* TX Endptr, plus bits: */
- #define TXENDPTR_CLP (0x00002000)
- #define TXENDPTR_MASK_PDUMODE (0x0000C000) /* PDU mode; values: */
- #define PDUMODE_AAL0 (0*0x04000)
- #define PDUMODE_AAL5 (2*0x04000)
- #define PDUMODE_AAL5STREAM (3*0x04000)
- vcc_txwriteptr = 0x38, /* TX Writeptr */
- #define TXWRITEPTR_GET_PTR(x) ((x)&0x1FFF)
- vcc_txcbr_next = 0x3C /* # of next CBR VCI in ring */
- #define TXCBR_NEXT_BOZO (0x00008000) /* "bozo bit" */
- };
- #define CARDVCC_SIZE (0x40)
- static inline bus_addr_t cardvcc_addr(const struct lanai_dev *lanai,
- vci_t vci)
- {
- return sram_addr(lanai, vci * CARDVCC_SIZE);
- }
- static inline u32 cardvcc_read(const struct lanai_vcc *lvcc,
- enum lanai_vcc_offset offset)
- {
- u32 val;
- APRINTK(lvcc->vbase != 0, "cardvcc_read: unbound vcc!n");
- val= readl(lvcc->vbase + (bus_addr_t) offset);
- RWDEBUG("VR vci=%04d 0x%02X = 0x%08Xn",
- lvcc->vci, (int) offset, val);
- return val;
- }
- static inline void cardvcc_write(const struct lanai_vcc *lvcc,
- u32 val, enum lanai_vcc_offset offset)
- {
- APRINTK(lvcc->vbase != 0, "cardvcc_write: unbound vcc!n");
- APRINTK((val & ~0xFFFF) == 0,
- "cardvcc_write: bad val 0x%X (vci=%d, addr=0x%02X)n",
- val, lvcc->vci, (int) offset);
- RWDEBUG("VW vci=%04d 0x%02X > 0x%08Xn",
- lvcc->vci, (int) offset, val);
- writel(val, lvcc->vbase + (bus_addr_t) offset);
- }
- /* -------------------- COMPUTE SIZE OF AN AAL5 PDU: */
- /* How many bytes will an AAL5 PDU take to transmit - remember that:
- * o we need to add 8 bytes for length, CPI, UU, and CRC
- * o we need to round up to 48 bytes for cells
- */
- static inline int aal5_size(int size)
- {
- int cells = (size + 8 + 47) / 48;
- return cells * 48;
- }
- /* How many bytes can we send if we have "space" space, assuming we have
- * to send full cells
- */
- static inline int aal5_spacefor(int space)
- {
- int cells = space / 48;
- return cells * 48;
- }
- /* -------------------- FREE AN ATM SKB: */
- static inline void lanai_free_skb(struct atm_vcc *atmvcc, struct sk_buff *skb)
- {
- if (atmvcc->pop != NULL)
- atmvcc->pop(atmvcc, skb);
- else
- dev_kfree_skb_any(skb);
- }
- /* -------------------- TURN VCCS ON AND OFF: */
- static void host_vcc_start_rx(const struct lanai_vcc *lvcc)
- {
- u32 addr1;
- if (lvcc->rx.atmvcc->qos.aal == ATM_AAL5) {
- unsigned long dmaaddr = lanai_buf_dmaaddr(&lvcc->rx.buf);
- cardvcc_write(lvcc, 0xFFFF, vcc_rxcrc1);
- cardvcc_write(lvcc, 0xFFFF, vcc_rxcrc2);
- cardvcc_write(lvcc, 0, vcc_rxwriteptr);
- cardvcc_write(lvcc, 0, vcc_rxbufstart);
- cardvcc_write(lvcc, 0, vcc_rxreadptr);
- cardvcc_write(lvcc, (dmaaddr >> 16) & 0xFFFF, vcc_rxaddr2);
- addr1 = ((dmaaddr >> 8) & 0xFF) |
- RXADDR1_SET_SIZE(lanai_buf_size_cardorder(&lvcc->rx.buf))|
- RXADDR1_SET_RMMODE(RMMODE_TRASH) | /* ??? */
- /* RXADDR1_OAM_PRESERVE | --- no OAM support yet */
- RXADDR1_SET_MODE(RXMODE_AAL5);
- } else
- addr1 = RXADDR1_SET_RMMODE(RMMODE_PRESERVE) | /* ??? */
- RXADDR1_OAM_PRESERVE | /* ??? */
- RXADDR1_SET_MODE(RXMODE_AAL0);
- /* This one must be last! */
- cardvcc_write(lvcc, addr1, vcc_rxaddr1);
- }
- static void host_vcc_start_tx(const struct lanai_vcc *lvcc)
- {
- unsigned long dmaaddr = lanai_buf_dmaaddr(&lvcc->tx.buf);
- cardvcc_write(lvcc, 0, vcc_txicg);
- cardvcc_write(lvcc, 0xFFFF, vcc_txcrc1);
- cardvcc_write(lvcc, 0xFFFF, vcc_txcrc2);
- cardvcc_write(lvcc, 0, vcc_txreadptr);
- cardvcc_write(lvcc, 0, vcc_txendptr);
- cardvcc_write(lvcc, 0, vcc_txwriteptr);
- cardvcc_write(lvcc,
- (lvcc->tx.atmvcc->qos.txtp.traffic_class == ATM_CBR) ?
- TXCBR_NEXT_BOZO | lvcc->vci : 0, vcc_txcbr_next);
- cardvcc_write(lvcc, (dmaaddr >> 16) & 0xFFFF, vcc_txaddr2);
- cardvcc_write(lvcc,
- ((dmaaddr >> 8) & 0xFF) |
- TXADDR1_SET_SIZE(lanai_buf_size_cardorder(&lvcc->tx.buf)),
- vcc_txaddr1);
- }
- /* Shutdown receiving on card */
- static void lanai_shutdown_rx_vci(const struct lanai_vcc *lvcc)
- {
- if (lvcc->vbase == 0) /* We were never bound to a VCI */
- return;
- /* 15.1.1 - set to trashing, wait one cell time (15us) */
- cardvcc_write(lvcc,
- RXADDR1_SET_RMMODE(RMMODE_TRASH) |
- RXADDR1_SET_MODE(RXMODE_TRASH), vcc_rxaddr1);
- udelay(15);
- /* 15.1.2 - clear rest of entries */
- cardvcc_write(lvcc, 0, vcc_rxaddr2);
- cardvcc_write(lvcc, 0, vcc_rxcrc1);
- cardvcc_write(lvcc, 0, vcc_rxcrc2);
- cardvcc_write(lvcc, 0, vcc_rxwriteptr);
- cardvcc_write(lvcc, 0, vcc_rxbufstart);
- cardvcc_write(lvcc, 0, vcc_rxreadptr);
- }
- /* Shutdown transmitting on card.
- * Unfortunately the lanai needs us to wait until all the data
- * drains out of the buffer before we can dealloc it, so this
- * can take awhile -- up to 370ms for a full 128KB buffer
- * assuming everone else is quiet. In theory the time is
- * boundless if there's a CBR VCC holding things up.
- */
- static void lanai_shutdown_tx_vci(struct lanai_dev *lanai,
- struct lanai_vcc *lvcc)
- {
- struct sk_buff *skb;
- unsigned long flags, timeout;
- int read, write, lastread = -1;
- APRINTK(!in_interrupt(),
- "lanai_shutdown_tx_vci called w/o process context!n");
- if (lvcc->vbase == 0) /* We were never bound to a VCI */
- return;
- /* 15.2.1 - wait for queue to drain */
- spin_lock_irqsave(&lanai->txlock, flags);
- if (lvcc->tx.inprogress != NULL) {
- lanai_free_skb(lvcc->tx.atmvcc, lvcc->tx.inprogress);
- lvcc->tx.inprogress = NULL;
- }
- while ((skb = skb_dequeue(&lvcc->tx.backlog)) != NULL)
- lanai_free_skb(lvcc->tx.atmvcc, skb);
- vcc_unmark_backlogged(lanai, lvcc);
- spin_unlock_irqrestore(&lanai->txlock, flags);
- timeout = jiffies + ((lanai_buf_size(&lvcc->tx.buf) * HZ) >> 17);
- write = TXWRITEPTR_GET_PTR(cardvcc_read(lvcc, vcc_txwriteptr));
- goto start;
- while (time_before_eq(jiffies, timeout)) {
- schedule_timeout(HZ / 25);
- start:
- read = TXREADPTR_GET_PTR(cardvcc_read(lvcc, vcc_txreadptr));
- if (read == write && /* Is TX buffer empty? */
- (lvcc->tx.atmvcc->qos.txtp.traffic_class != ATM_CBR ||
- (cardvcc_read(lvcc, vcc_txcbr_next) &
- TXCBR_NEXT_BOZO) == 0))
- goto done;
- if (read != lastread) { /* Has there been any progress? */
- lastread = read;
- timeout += HZ / 10;
- }
- }
- printk(KERN_ERR DEV_LABEL "(itf %d): Timed out on backlog closing "
- "vci %dn", lvcc->tx.atmvcc->dev->number, lvcc->vci);
- DPRINTK("read, write = %d, %dn", read, write);
- done:
- /* 15.2.2 - clear out all tx registers */
- cardvcc_write(lvcc, 0, vcc_txreadptr);
- cardvcc_write(lvcc, 0, vcc_txwriteptr);
- cardvcc_write(lvcc, 0, vcc_txendptr);
- cardvcc_write(lvcc, 0, vcc_txcrc1);
- cardvcc_write(lvcc, 0, vcc_txcrc2);
- cardvcc_write(lvcc, 0, vcc_txaddr2);
- cardvcc_write(lvcc, 0, vcc_txaddr1);
- }
- /* -------------------- MANAGING AAL0 RX BUFFER: */
- static inline int aal0_buffer_allocate(struct lanai_dev *lanai)
- {
- DPRINTK("aal0_buffer_allocate: allocating AAL0 RX buffern");
- lanai_buf_allocate(&lanai->aal0buf, AAL0_RX_BUFFER_SIZE, 80);
- return (lanai->aal0buf.order < 0) ? -ENOMEM : 0;
- }
- static inline void aal0_buffer_free(struct lanai_dev *lanai)
- {
- DPRINTK("aal0_buffer_allocate: freeing AAL0 RX buffern");
- lanai_buf_deallocate(&lanai->aal0buf);
- }
- /* -------------------- EEPROM UTILITIES: */
- /* Offsets of data in the EEPROM */
- #define EEPROM_COPYRIGHT (0)
- #define EEPROM_COPYRIGHT_LEN (44)
- #define EEPROM_CHECKSUM (62)
- #define EEPROM_CHECKSUM_REV (63)
- #define EEPROM_MAC (64)
- #define EEPROM_MAC_REV (70)
- #define EEPROM_SERIAL (112)
- #define EEPROM_SERIAL_REV (116)
- #define EEPROM_MAGIC (120)
- #define EEPROM_MAGIC_REV (124)
- #define EEPROM_MAGIC_VALUE (0x5AB478D2)
- #ifndef READ_EEPROM
- /* Stub functions to use if EEPROM reading is disabled */
- static int __init eeprom_read(struct lanai_dev *lanai)
- {
- printk(KERN_INFO DEV_LABEL "(itf %d): *NOT* reading EEPROMn",
- lanai->number);
- memset(&lanai->eeprom[EEPROM_MAC], 0, 6);
- return 0;
- }
- static int __init eeprom_validate(struct lanai_dev *lanai)
- {
- lanai->serialno = 0;
- lanai->magicno = EEPROM_MAGIC_VALUE;
- return 0;
- }
- #else /* READ_EEPROM */
- static int __init eeprom_read(struct lanai_dev *lanai)
- {
- int i, address;
- u8 data;
- u32 tmp;
- #define set_config1(x) do { lanai->conf1 = x; conf1_write(lanai);
- } while (0)
- #define clock_h() set_config1(lanai->conf1 | CONFIG1_PROMCLK)
- #define clock_l() set_config1(lanai->conf1 &~ CONFIG1_PROMCLK)
- #define data_h() set_config1(lanai->conf1 | CONFIG1_PROMDATA)
- #define data_l() set_config1(lanai->conf1 &~ CONFIG1_PROMDATA)
- #define pre_read() do { data_h(); clock_h(); udelay(5); } while (0)
- #define read_pin() (reg_read(lanai, Status_Reg) & STATUS_PROMDATA)
- #define send_stop() do { data_l(); udelay(5); clock_h(); udelay(5);
- data_h(); udelay(5); } while (0)
- /* start with both clock and data high */
- data_h(); clock_h(); udelay(5);
- for (address = 0; address < LANAI_EEPROM_SIZE; address++) {
- data = (address << 1) | 1; /* Command=read + address */
- /* send start bit */
- data_l(); udelay(5);
- clock_l(); udelay(5);
- for (i = 128; i != 0; i >>= 1) { /* write command out */
- tmp = (lanai->conf1 & ~CONFIG1_PROMDATA) |
- (data & i) ? CONFIG1_PROMDATA : 0;
- if (lanai->conf1 != tmp) {
- set_config1(tmp);
- udelay(5); /* Let new data settle */
- }
- clock_h(); udelay(5); clock_l(); udelay(5);
- }
- /* look for ack */
- data_h(); clock_h(); udelay(5);
- if (read_pin() != 0)
- goto error; /* No ack seen */
- clock_l(); udelay(5);
- /* read back result */
- for (data = 0, i = 7; i >= 0; i--) {
- data_h(); clock_h(); udelay(5);
- data = (data << 1) | !!read_pin();
- clock_l(); udelay(5);
- }
- /* look again for ack */
- data_h(); clock_h(); udelay(5);
- if (read_pin() == 0)
- goto error; /* Spurious ack */
- clock_l(); udelay(5);
- send_stop();
- lanai->eeprom[address] = data;
- DPRINTK("EEPROM 0x%04X %02Xn", address, data);
- }
- return 0;
- error:
- clock_l(); udelay(5); /* finish read */
- send_stop();
- printk(KERN_ERR DEV_LABEL "(itf %d): error reading EEPROM byte %dn",
- lanai->number, address);
- return -EIO;
- #undef set_config1
- #undef clock_h
- #undef clock_l
- #undef data_h
- #undef data_l
- #undef pre_read
- #undef read_pin
- #undef send_stop
- }
- /* read a big-endian 4-byte value out of eeprom */
- static inline u32 eeprom_be4(const struct lanai_dev *lanai, int address)
- {
- return be32_to_cpup((u32 *) (&lanai->eeprom[address]));
- }
- /* Checksum/validate EEPROM contents */
- static int __init eeprom_validate(struct lanai_dev *lanai)
- {
- int i, s;
- u32 v;
- const u8 *e = lanai->eeprom;
- #ifdef DEBUG
- /* First, see if we can get an ASCIIZ string out of the copyright */
- for (i = EEPROM_COPYRIGHT;
- i < (EEPROM_COPYRIGHT + EEPROM_COPYRIGHT_LEN); i++)
- if (e[i] < 0x20 || e[i] > 0x7E)
- break;
- if ( i != EEPROM_COPYRIGHT &&
- i != EEPROM_COPYRIGHT + EEPROM_COPYRIGHT_LEN && e[i] == ' ')
- DPRINTK("eeprom: copyright = "%s"n",
- (char *) &e[EEPROM_COPYRIGHT]);
- else
- DPRINTK("eeprom: copyright not foundn");
- #endif
- /* Validate checksum */
- for (i = s = 0; i < EEPROM_CHECKSUM; i++)
- s += e[i];
- s &= 0xFF;
- if (s != e[EEPROM_CHECKSUM]) {
- printk(KERN_ERR DEV_LABEL "(itf %d): EEPROM checksum bad "
- "(wanted 0x%02X, got 0x%02X)n", lanai->number,
- s, e[EEPROM_CHECKSUM]);
- return -EIO;
- }
- s ^= 0xFF;
- if (s != e[EEPROM_CHECKSUM_REV]) {
- printk(KERN_ERR DEV_LABEL "(itf %d): EEPROM inverse checksum "
- "bad (wanted 0x%02X, got 0x%02X)n", lanai->number,
- s, e[EEPROM_CHECKSUM_REV]);
- return -EIO;
- }
- /* Verify MAC address */
- for (i = 0; i < 6; i++)
- if ((e[EEPROM_MAC + i] ^ e[EEPROM_MAC_REV + i]) != 0xFF) {
- printk(KERN_ERR DEV_LABEL
- "(itf %d) : EEPROM MAC addresses don't match "
- "(0x%02X, inverse 0x%02X)n", lanai->number,
- e[EEPROM_MAC + i], e[EEPROM_MAC_REV + i]);
- return -EIO;
- }
- DPRINTK("eeprom: MAC address = %02X:%02X:%02X:%02X:%02X:%02Xn",
- e[EEPROM_MAC + 0], e[EEPROM_MAC + 1], e[EEPROM_MAC + 2],
- e[EEPROM_MAC + 3], e[EEPROM_MAC + 4], e[EEPROM_MAC + 5]);
- /* Verify serial number */
- lanai->serialno = eeprom_be4(lanai, EEPROM_SERIAL);
- v = eeprom_be4(lanai, EEPROM_SERIAL_REV);
- if ((lanai->serialno ^ v) != 0xFFFFFFFF) {
- printk(KERN_ERR DEV_LABEL "(itf %d): EEPROM serial numbers "
- "don't match (0x%08X, inverse 0x%08X)n", lanai->number,
- lanai->serialno, v);
- return -EIO;
- }
- DPRINTK("eeprom: Serial number = %dn", lanai->serialno);
- /* Verify magic number */
- lanai->magicno = eeprom_be4(lanai, EEPROM_MAGIC);
- v = eeprom_be4(lanai, EEPROM_MAGIC_REV);
- if ((lanai->magicno ^ v) != 0xFFFFFFFF) {
- printk(KERN_ERR DEV_LABEL "(itf %d): EEPROM magic numbers "
- "don't match (0x%08X, inverse 0x%08X)n", lanai->number,
- lanai->magicno, v);
- return -EIO;
- }
- DPRINTK("eeprom: Magic number = 0x%08Xn", lanai->magicno);
- if (lanai->magicno != EEPROM_MAGIC_VALUE)
- printk(KERN_WARNING DEV_LABEL "(itf %d): warning - EEPROM "
- "magic not what expected (got 0x%08X, not 0x%08X)n",
- lanai->number, lanai->magicno, EEPROM_MAGIC_VALUE);
- return 0;
- }
- #endif /* READ_EEPROM */
- static inline const u8 *eeprom_mac(const struct lanai_dev *lanai)
- {
- return &lanai->eeprom[EEPROM_MAC];
- }
- /* -------------------- INTERRUPT HANDLING UTILITIES: */
- /* Interrupt types */
- #define INT_STATS (0x00000002) /* Statistics counter overflow */
- #define INT_SOOL (0x00000004) /* SOOL changed state */
- #define INT_LOCD (0x00000008) /* LOCD changed state */
- #define INT_LED (0x00000010) /* LED (HAPPI) changed state */
- #define INT_GPIN (0x00000020) /* GPIN changed state */
- #define INT_PING (0x00000040) /* PING_COUNT fulfilled */
- #define INT_WAKE (0x00000080) /* Lanai wants bus */
- #define INT_CBR0 (0x00000100) /* CBR sched hit VCI 0 */
- #define INT_LOCK (0x00000200) /* Service list overflow */
- #define INT_MISMATCH (0x00000400) /* TX magic list mismatch */
- #define INT_AAL0_STR (0x00000800) /* Non-AAL5 buffer half filled */
- #define INT_AAL0 (0x00001000) /* Non-AAL5 data available */
- #define INT_SERVICE (0x00002000) /* Service list entries available */
- #define INT_TABORTSENT (0x00004000) /* Target abort sent by lanai */
- #define INT_TABORTBM (0x00008000) /* Abort rcv'd as bus master */
- #define INT_TIMEOUTBM (0x00010000) /* No response to bus master */
- #define INT_PCIPARITY (0x00020000) /* Parity error on PCI */
- /* Sets of the above */
- #define INT_ALL (0x0003FFFE) /* All interrupts */
- #define INT_STATUS (0x0000003C) /* Some status pin changed */
- #define INT_DMASHUT (0x00038000) /* DMA engine got shut down */
- #define INT_SEGSHUT (0x00000700) /* Segmentation got shut down */
- static inline u32 intr_pending(const struct lanai_dev *lanai)
- {
- return reg_read(lanai, IntStatusMasked_Reg);
- }
- static inline void intr_enable(const struct lanai_dev *lanai, u32 i)
- {
- reg_write(lanai, i, IntControlEna_Reg);
- }
- static inline void intr_disable(const struct lanai_dev *lanai, u32 i)
- {
- reg_write(lanai, i, IntControlDis_Reg);
- }
- /* -------------------- CARD/PCI STATUS: */
- static void status_message(int itf, const char *name, int status)
- {
- static const char *onoff[2] = { "off to on", "on to off" };
- printk(KERN_INFO DEV_LABEL "(itf %d): %s changed from %sn",
- itf, name, onoff[!status]);
- }
- static void lanai_check_status(struct lanai_dev *lanai)
- {
- u32 new = reg_read(lanai, Status_Reg);
- u32 changes = new ^ lanai->status;
- lanai->status = new;
- #define e(flag, name)
- if (changes & flag)
- status_message(lanai->number, name, new & flag)
- e(STATUS_SOOL, "SOOL");
- e(STATUS_LOCD, "LOCD");
- e(STATUS_LED, "LED");
- e(STATUS_GPIN, "GPIN");
- #undef e
- }
- static void pcistatus_got(int itf, const char *name)
- {
- printk(KERN_INFO DEV_LABEL "(itf %d): PCI got %s errorn", itf, name);
- }
- static void pcistatus_check(struct lanai_dev *lanai, int clearonly)
- {
- u16 s;
- int result;
- result = pci_read_config_word(lanai->pci, PCI_STATUS, &s);
- if (result != PCIBIOS_SUCCESSFUL) {
- printk(KERN_ERR DEV_LABEL "(itf %d): can't read PCI_STATUS: "
- "%dn", lanai->number, result);
- return;
- }
- s &= PCI_STATUS_DETECTED_PARITY | PCI_STATUS_SIG_SYSTEM_ERROR |
- PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT |
- PCI_STATUS_SIG_TARGET_ABORT | PCI_STATUS_PARITY;
- if (s == 0)
- return;
- result = pci_write_config_word(lanai->pci, PCI_STATUS, s);
- if (result != PCIBIOS_SUCCESSFUL)
- printk(KERN_ERR DEV_LABEL "(itf %d): can't write PCI_STATUS: "
- "%dn", lanai->number, result);
- if (clearonly)
- return;
- #define e(flag, name, stat)
- if (s & flag) {
- pcistatus_got(lanai->number, name);
- ++lanai->stats.pcierr_##stat;
- }
- e(PCI_STATUS_DETECTED_PARITY, "parity", parity_detect);
- e(PCI_STATUS_SIG_SYSTEM_ERROR, "signalled system", serr_set);
- e(PCI_STATUS_REC_MASTER_ABORT, "master", master_abort);
- e(PCI_STATUS_REC_TARGET_ABORT, "master target", m_target_abort);
- e(PCI_STATUS_SIG_TARGET_ABORT, "slave", s_target_abort);
- e(PCI_STATUS_PARITY, "master parity", master_parity);
- #undef e
- }
- /* -------------------- VCC TX BUFFER UTILITIES: */
- /* space left in tx buffer in bytes */
- static inline int vcc_tx_space(const struct lanai_vcc *lvcc, int endptr)
- {
- int r;
- r = endptr * 16;
- r -= ((unsigned long) lvcc->tx.buf.ptr) -
- ((unsigned long) lvcc->tx.buf.start);
- r -= 16; /* Leave "bubble" - if start==end it looks empty */
- if (r < 0)
- r += lanai_buf_size(&lvcc->tx.buf);
- return r;
- }
- /* Bit fields in the segmentation buffer descriptor */
- #define DESCRIPTOR_MAGIC (0xD0000000)
- #define DESCRIPTOR_AAL5 (0x00008000)
- #define DESCRIPTOR_AAL5_STREAM (0x00004000)
- #define DESCRIPTOR_CLP (0x00002000)
- /* Add 32-bit descriptor with it's padding */
- static inline void vcc_tx_add_aal5_descriptor(struct lanai_vcc *lvcc,
- u32 flags, int len)
- {
- int pos;
- APRINTK((((unsigned long) lvcc->tx.buf.ptr) & 15) == 0,
- "vcc_tx_add_aal5_descriptor: bad ptr=%pn", lvcc->tx.buf.ptr);
- lvcc->tx.buf.ptr += 4; /* Hope the values REALLY don't matter */
- pos = ((unsigned char *) lvcc->tx.buf.ptr) -
- (unsigned char *) lvcc->tx.buf.start;
- APRINTK((pos & ~0x0001FFF0) == 0,
- "vcc_tx_add_aal5_descriptor: bad pos (%d) before, vci=%d, "
- "start,ptr,end=%p,%p,%pn", pos, lvcc->vci,
- lvcc->tx.buf.start, lvcc->tx.buf.ptr, lvcc->tx.buf.end);
- pos = (pos + len) & (lanai_buf_size(&lvcc->tx.buf) - 1);
- APRINTK((pos & ~0x0001FFF0) == 0,
- "vcc_tx_add_aal5_descriptor: bad pos (%d) after, vci=%d, "
- "start,ptr,end=%p,%p,%pn", pos, lvcc->vci,
- lvcc->tx.buf.start, lvcc->tx.buf.ptr, lvcc->tx.buf.end);
- lvcc->tx.buf.ptr[-1] =
- cpu_to_le32(DESCRIPTOR_MAGIC | DESCRIPTOR_AAL5 |
- ((lvcc->tx.atmvcc->atm_options & ATM_ATMOPT_CLP) ?
- DESCRIPTOR_CLP : 0) | flags | pos >> 4);
- if (lvcc->tx.buf.ptr >= lvcc->tx.buf.end)
- lvcc->tx.buf.ptr = lvcc->tx.buf.start;
- }
- /* Add 32-bit AAL5 trailer and leave room for its CRC */
- static inline void vcc_tx_add_aal5trailer(struct lanai_vcc *lvcc,
- int len, int cpi, int uu)
- {
- APRINTK((((unsigned long) lvcc->tx.buf.ptr) & 15) == 8,
- "vcc_tx_add_aal5_descriptor: bad ptr=%pn", lvcc->tx.buf.ptr);
- lvcc->tx.buf.ptr += 2;
- lvcc->tx.buf.ptr[-2] = cpu_to_be32((uu << 24) | (cpi << 16) | len);
- if (lvcc->tx.buf.ptr >= lvcc->tx.buf.end)
- lvcc->tx.buf.ptr = lvcc->tx.buf.start;
- }
- static inline void vcc_tx_memcpy(struct lanai_vcc *lvcc,
- const unsigned char *src, int n)
- {
- unsigned char *e;
- int m;
- e = ((unsigned char *) lvcc->tx.buf.ptr) + n;
- m = e - (unsigned char *) lvcc->tx.buf.end;
- if (m < 0)
- m = 0;
- memcpy(lvcc->tx.buf.ptr, src, n - m);
- if (m != 0) {
- memcpy(lvcc->tx.buf.start, src + n - m, m);
- e = ((unsigned char *) lvcc->tx.buf.start) + m;
- }
- lvcc->tx.buf.ptr = (u32 *) e;
- }
- static inline void vcc_tx_memzero(struct lanai_vcc *lvcc, int n)
- {
- unsigned char *e;
- int m;
- if (n == 0)
- return;
- e = ((unsigned char *) lvcc->tx.buf.ptr) + n;
- m = e - (unsigned char *) lvcc->tx.buf.end;
- if (m < 0)
- m = 0;
- memset(lvcc->tx.buf.ptr, 0, n - m);
- if (m != 0) {
- memset(lvcc->tx.buf.start, 0, m);
- e = ((unsigned char *) lvcc->tx.buf.start) + m;
- }
- lvcc->tx.buf.ptr = (u32 *) e;
- }
- /* Update "butt" register to specify new WritePtr */
- static inline void lanai_endtx(const struct lanai_dev *lanai,
- const struct lanai_vcc *lvcc)
- {
- int i, ptr = ((unsigned char *) lvcc->tx.buf.ptr) -
- (unsigned char *) lvcc->tx.buf.start;
- APRINTK((ptr & ~0x0001FFF0) == 0,
- "lanai_endtx: bad ptr (%d), vci=%d, start,ptr,end=%p,%p,%pn",
- ptr, lvcc->vci, lvcc->tx.buf.start, lvcc->tx.buf.ptr,
- lvcc->tx.buf.end);
- /*
- * We need to check if the "butt busy" bit is set before
- * updating the butt register. In theory this should
- * never happen because the ATM card is plenty fast at
- * updating the register. Still, we should make sure
- */
- for (i = 0; reg_read(lanai, Status_Reg) & STATUS_BUTTBUSY; i++) {
- if (i > 50) {
- printk(KERN_ERR DEV_LABEL "(itf %d): butt register "
- "always busy!n", lanai->number);
- break;
- }
- udelay(5);
- }
- reg_write(lanai, (ptr << 12) | lvcc->vci, Butt_Reg);
- }
- /* Try to fill the buffer - don't call unless there is backlog */
- static void vcc_tx_unqueue_aal5(struct lanai_dev *lanai,
- struct lanai_vcc *lvcc, int endptr)
- {
- int pad, n;
- struct sk_buff *skb;
- int space = vcc_tx_space(lvcc, endptr);
- APRINTK(vcc_is_backlogged(lvcc),
- "vcc_tx_unqueue() called with empty backlog (vci=%d)n",
- lvcc->vci);
- if (space < 64)
- return; /* No space for even 1 cell+descriptor */
- if (lvcc->tx.inprogress != NULL) {
- APRINTK((lvcc->tx.inprogleft % 48) == 0,
- "vcc_tx_unqueue_aal5: bad progleft=%dn",
- lvcc->tx.inprogleft);
- if (lvcc->tx.inprogleft + 16 > space) { /* Can't send all? */
- n = aal5_spacefor(space - 16); /* Bytes to send */
- vcc_tx_add_aal5_descriptor(lvcc,
- DESCRIPTOR_AAL5_STREAM, n);
- pad = lvcc->tx.pptr + n - lvcc->tx.inprogress->tail;
- if (pad < 0)
- pad = 0;
- vcc_tx_memcpy(lvcc, lvcc->tx.pptr, n - pad);
- vcc_tx_memzero(lvcc, pad);
- lvcc->tx.pptr += n;
- lvcc->tx.inprogleft -= n;
- goto end; /* Buffer is now full */
- }
- /* OK, there's at least space for all of "inprogress" skb */
- vcc_tx_add_aal5_descriptor(lvcc, 0,
- lvcc->tx.inprogleft);
- pad = lvcc->tx.pptr + lvcc->tx.inprogleft -
- lvcc->tx.inprogress->tail;
- if (pad >= lvcc->tx.inprogleft) { /* Nothing but pad left */
- APRINTK(lvcc->tx.inprogleft == 48,
- "vcc_tx_unqueue_aal5: bad pure-pad=%dn",
- lvcc->tx.inprogleft);
- pad = 48;
- } else
- vcc_tx_memcpy(lvcc, lvcc->tx.pptr,
- lvcc->tx.inprogleft - pad);
- vcc_tx_memzero(lvcc, pad - 8);
- vcc_tx_add_aal5trailer(lvcc, lvcc->tx.inprogress->len, 0, 0);
- lanai_free_skb(lvcc->tx.atmvcc, lvcc->tx.inprogress);
- lvcc->tx.inprogress = NULL;
- space -= lvcc->tx.inprogleft + 16;
- atomic_inc(&lvcc->tx.atmvcc->stats->tx);
- }
- while (space >= 64) {
- if ((skb = skb_dequeue(&lvcc->tx.backlog)) == NULL)
- break;
- n = aal5_size(skb->len);
- if (n + 16 > space) { /* Can only send part */
- int m = aal5_spacefor(space - 16); /* Bytes to send */
- vcc_tx_add_aal5_descriptor(lvcc,
- DESCRIPTOR_AAL5_STREAM, m);
- lvcc->tx.pptr = skb->data + m;
- pad = lvcc->tx.pptr - skb->tail;
- if (pad < 0)
- pad = 0;
- vcc_tx_memcpy(lvcc, skb->data, m - pad);
- vcc_tx_memzero(lvcc, pad);
- lvcc->tx.inprogleft = n - m;
- lvcc->tx.inprogress = skb;
- goto end;
- }
- vcc_tx_add_aal5_descriptor(lvcc, 0, n);
- pad = n - skb->len - 8;
- vcc_tx_memcpy(lvcc, skb->data, skb->len);
- vcc_tx_memzero(lvcc, pad);
- lanai_free_skb(lvcc->tx.atmvcc, skb);
- vcc_tx_add_aal5trailer(lvcc, skb->len, 0, 0);
- space -= n + 16;
- atomic_inc(&lvcc->tx.atmvcc->stats->tx);
- }
- if (skb_queue_empty(&lvcc->tx.backlog))
- vcc_unmark_backlogged(lanai, lvcc);
- end:
- lanai_endtx(lanai, lvcc);
- }
- /* Given an skb that we want to transmit either send it now or queue */
- static void vcc_tx_aal5(struct lanai_dev *lanai, struct lanai_vcc *lvcc,
- struct sk_buff *skb)
- {
- int space, n, pad;
- if (vcc_is_backlogged(lvcc)) /* Already backlogged */
- goto queue_it;
- space = vcc_tx_space(lvcc, TXREADPTR_GET_PTR(cardvcc_read(lvcc,
- vcc_txreadptr)));
- if (space < 64) {
- vcc_mark_backlogged(lanai, lvcc); /* No space */
- goto queue_it;
- }
- if (space >= 16 + (n = aal5_size(skb->len))) {
- /* We can send the whole thing now */
- vcc_tx_add_aal5_descriptor(lvcc, 0, n);
- pad = n - skb->len;
- vcc_tx_memcpy(lvcc, skb->data, skb->len);
- vcc_tx_memzero(lvcc, pad - 8);
- vcc_tx_add_aal5trailer(lvcc, skb->len, 0, 0);
- lanai_free_skb(lvcc->tx.atmvcc, skb);
- atomic_inc(&lvcc->tx.atmvcc->stats->tx);
- } else { /* Space for only part of skb */
- int bytes = aal5_spacefor(space - 16); /* Bytes to send */
- vcc_tx_add_aal5_descriptor(lvcc,
- DESCRIPTOR_AAL5_STREAM, bytes);
- pad = bytes - skb->len;
- if (pad < 0)
- pad = 0;
- vcc_tx_memcpy(lvcc, skb->data, bytes - pad);
- vcc_tx_memzero(lvcc, pad);
- lvcc->tx.inprogress = skb;
- lvcc->tx.inprogleft = n - bytes;
- lvcc->tx.pptr = skb->data + bytes;
- vcc_mark_backlogged(lanai, lvcc);
- }
- lanai_endtx(lanai, lvcc);
- return;
- queue_it:
- skb_queue_tail(&lvcc->tx.backlog, skb);
- }
- static void vcc_tx_unqueue_aal0(struct lanai_dev *lanai,
- struct lanai_vcc *lvcc, int endptr)
- {
- printk(KERN_INFO DEV_LABEL
- ": vcc_tx_unqueue_aal0: not implementedn");
- }
- static void vcc_tx_aal0(struct lanai_dev *lanai, struct lanai_vcc *lvcc,
- struct sk_buff *skb)
- {
- printk(KERN_INFO DEV_LABEL ": vcc_tx_aal0: not implementedn");
- /* Remember to increment lvcc->tx.atmvcc->stats->tx */
- lanai_free_skb(lvcc->tx.atmvcc, skb);
- }
- /* Try to undequeue 1 backlogged vcc */
- static void iter_dequeue(struct lanai_dev *lanai, vci_t vci)
- {
- struct lanai_vcc *lvcc = lanai->vccs[vci];
- int endptr;
- if (lvcc == NULL || !vcc_is_backlogged(lvcc)) {
- vci_bitfield_clear(&lanai->backlog_vccs, vci);
- return;
- }
- endptr = TXREADPTR_GET_PTR(cardvcc_read(lvcc, vcc_txreadptr));
- lvcc->tx.unqueue(lanai, lvcc, endptr);
- }
- /* Try a dequeue on all backlogged connections */
- static inline void vcc_tx_dequeue_all(struct lanai_dev *lanai)
- {
- unsigned long flags;
- spin_lock_irqsave(&lanai->txlock, flags);
- vci_bitfield_iterate(lanai, &lanai->backlog_vccs, iter_dequeue);
- spin_unlock_irqrestore(&lanai->txlock, flags);
- }
- /* -------------------- VCC RX BUFFER UTILITIES: */
- /* unlike the _tx_ cousins, this doesn't update ptr */
- static inline void vcc_rx_memcpy(unsigned char *dest,
- const struct lanai_vcc *lvcc, int n)
- {
- int m = ((const unsigned char *) lvcc->rx.buf.ptr) + n -
- ((const unsigned char *) (lvcc->rx.buf.end));
- if (m < 0)
- m = 0;
- memcpy(dest, lvcc->rx.buf.ptr, n - m);
- memcpy(dest + n - m, lvcc->rx.buf.start, m);
- }
- /* Receive AAL5 data on a VCC with a particular endptr */
- static void vcc_rx_aal5(struct lanai_vcc *lvcc, int endptr)
- {
- int size;
- struct sk_buff *skb;
- /*const*/ u32 *x, *end = &lvcc->rx.buf.start[endptr * 4];
- int n = ((unsigned long) end) - ((unsigned long) lvcc->rx.buf.ptr);
- if (n < 0)
- n += lanai_buf_size(&lvcc->rx.buf);
- APRINTK(n >= 0 && n < lanai_buf_size(&lvcc->rx.buf) && !(n & 15),
- "vcc_rx_aal5: n out of range (%d/%d)n",
- n, lanai_buf_size(&lvcc->rx.buf));
- /* Recover the second-to-last word to get true pdu length */
- if ((x = &end[-2]) < lvcc->rx.buf.start)
- x = &lvcc->rx.buf.end[-2];
- size = be32_to_cpup(x) & 0xffff;
- if (n != aal5_size(size)) { /* Make sure size matches padding */
- printk(KERN_INFO DEV_LABEL "(itf %d): Got bad AAL5 length "
- "on vci=%d - size=%d n=%dn",
- lvcc->rx.atmvcc->dev->number, lvcc->vci, size, n);
- lvcc->stats.x.aal5.rx_badlen++;
- goto out;
- }
- skb = atm_alloc_charge(lvcc->rx.atmvcc, size, GFP_ATOMIC);
- if (skb == NULL) {
- lvcc->stats.rx_nomem++;
- goto out;
- }
- skb_put(skb, size);
- ATM_SKB(skb)->vcc = lvcc->rx.atmvcc;
- skb->stamp = xtime;
- vcc_rx_memcpy(skb->data, lvcc, size);
- lvcc->rx.atmvcc->push(lvcc->rx.atmvcc, skb);
- atomic_inc(&lvcc->rx.atmvcc->stats->rx);
- out:
- lvcc->rx.buf.ptr = end;
- cardvcc_write(lvcc, endptr, vcc_rxreadptr);
- }
- static void vcc_rx_aal0(struct lanai_dev *lanai)
- {
- printk(KERN_INFO DEV_LABEL ": vcc_rx_aal0: not implementedn");
- /* Remember to get vcclist_read_lock while looking up VC */
- /* Remember to increment lvcc->rx.atmvcc->stats->rx */
- }
- /* -------------------- MANAGING HOST-BASED VCC TABLE: */
- /* Decide whether to use vmalloc or get_free_page for VCC table */
- #if (NUM_VCI * BITS_PER_LONG) <= PAGE_SIZE
- #define VCCTABLE_GETFREEPAGE
- #else
- #include <linux/vmalloc.h>
- #endif
- static int __init vcc_table_allocate(struct lanai_dev *lanai)
- {
- #ifdef VCCTABLE_GETFREEPAGE
- APRINTK((lanai->num_vci) * sizeof(struct lanai_vcc *) <= PAGE_SIZE,
- "vcc table > PAGE_SIZE!");
- lanai->vccs = (struct lanai_vcc **) get_free_page(GFP_KERNEL);
- return (lanai->vccs == NULL) ? -ENOMEM : 0;
- #else
- int bytes = (lanai->num_vci) * sizeof(struct lanai_vcc *);
- lanai->vccs = (struct lanai_vcc **) vmalloc(bytes);
- if (lanai->vccs == NULL)
- return -ENOMEM;
- memset(lanai->vccs, 0, bytes);
- return 0;
- #endif
- }
- static inline void vcc_table_deallocate(const struct lanai_dev *lanai)
- {
- #ifdef VCCTABLE_GETFREEPAGE
- free_page((unsigned long) lanai->vccs);
- #else
- vfree(lanai->vccs);
- #endif
- }
- /* Allocate a fresh lanai_vcc, with the appropriate things cleared */
- static inline struct lanai_vcc *new_lanai_vcc(void)
- {
- struct lanai_vcc *lvcc;
- lvcc = (struct lanai_vcc *) kmalloc(sizeof(*lvcc), GFP_KERNEL);
- if (lvcc != NULL) {
- lvcc->vbase = 0;
- lvcc->rx.atmvcc = lvcc->tx.atmvcc = NULL;
- lvcc->nref = 0;
- memset(&lvcc->stats, 0, sizeof lvcc->stats);
- lvcc->rx.buf.start = lvcc->tx.buf.start = NULL;
- skb_queue_head_init(&lvcc->tx.backlog);
- lvcc->tx.inprogress = NULL;
- #ifdef DEBUG
- lvcc->tx.unqueue = NULL;
- lvcc->vci = -1;
- #endif
- }
- return lvcc;
- }
- static int lanai_get_sized_buffer(int number, struct lanai_buffer *buf,
- int max_sdu, int multiplier, int min, const char *name)
- {
- int size;
- if (max_sdu < 1)
- max_sdu = 1;
- max_sdu = aal5_size(max_sdu);
- size = (max_sdu + 16) * multiplier + 16;
- lanai_buf_allocate(buf, size, min);
- if (buf->order < 0)
- return -ENOMEM;
- if (lanai_buf_size(buf) < size)
- printk(KERN_WARNING DEV_LABEL "(itf %d): wanted %d bytes "
- "for %s buffer, got only %dn", number, size, name,
- lanai_buf_size(buf));
- DPRINTK("Allocated %d byte %s buffern", lanai_buf_size(buf), name);
- return 0;
- }
- /* Setup a RX buffer for a currently unbound AAL5 vci */
- static inline int lanai_setup_rx_vci_aal5(int number, struct lanai_vcc *lvcc,
- const struct atm_qos *qos)
- {
- return lanai_get_sized_buffer(number, &lvcc->rx.buf,
- qos->rxtp.max_sdu, AAL5_RX_MULTIPLIER, qos->rxtp.max_sdu + 32,
- "RX");
- }
- /* Setup a TX buffer for a currently unbound AAL5 vci */
- static int lanai_setup_tx_vci(int number, struct lanai_vcc *lvcc,
- const struct atm_qos *qos)
- {
- int max_sdu, multiplier;
- if (qos->aal == ATM_AAL0) {
- lvcc->tx.unqueue = vcc_tx_unqueue_aal0;
- max_sdu = ATM_CELL_SIZE - 1;
- multiplier = AAL0_TX_MULTIPLIER;
- } else {
- lvcc->tx.unqueue = vcc_tx_unqueue_aal5;
- max_sdu = qos->txtp.max_sdu;
- multiplier = AAL5_TX_MULTIPLIER;
- }
- return lanai_get_sized_buffer(number, &lvcc->tx.buf, max_sdu,
- multiplier, 80, "TX");
- }
- static inline void host_vcc_bind(struct lanai_dev *lanai,
- struct lanai_vcc *lvcc, vci_t vci)
- {
- if (lvcc->vbase != 0)
- return; /* We already were bound in the other direction */
- DPRINTK("Binding vci %dn", vci);
- #ifdef USE_POWERDOWN
- if (lanai->nbound++ == 0) {
- DPRINTK("Coming out of powerdownn");
- lanai->conf1 &= ~CONFIG1_POWERDOWN;
- conf1_write(lanai);
- conf2_write(lanai);
- }
- #endif
- lvcc->vbase = cardvcc_addr(lanai, vci);
- lanai->vccs[lvcc->vci = vci] = lvcc;
- }
- static inline void host_vcc_unbind(struct lanai_dev *lanai,
- struct lanai_vcc *lvcc)
- {
- if (lvcc->vbase == 0)
- return; /* This vcc was never bound */
- DPRINTK("Unbinding vci %dn", lvcc->vci);
- lvcc->vbase = 0;
- lanai->vccs[lvcc->vci] = NULL;
- #ifdef USE_POWERDOWN
- if (--lanai->nbound == 0) {
- DPRINTK("Going into powerdownn");
- lanai->conf1 |= CONFIG1_POWERDOWN;
- conf1_write(lanai);
- }
- #endif
- }
- /* -------------------- RESET CARD: */
- static void lanai_reset(struct lanai_dev *lanai)
- {
- printk(KERN_CRIT DEV_LABEL "(itf %d): *NOT* reseting - not "
- "implementedn", lanai->number);
- /* TODO */
- /* The following is just a hack until we write the real
- * resetter - at least ack whatever interrupt sent us
- * here
- */
- reg_write(lanai, INT_ALL, IntAck_Reg);
- lanai->stats.card_reset++;
- }
- /* -------------------- SERVICE LIST UTILITIES: */
- /*
- * Allocate service buffer and tell card about it
- */
- static int __init service_buffer_allocate(struct lanai_dev *lanai)
- {
- lanai_buf_allocate(&lanai->service, SERVICE_ENTRIES * 4, 0);
- if (lanai->service.order < 0)
- return -ENOMEM;
- DPRINTK("allocated service buffer at 0x%08lX, size %d(%d)n",
- (unsigned long) lanai->service.start,
- lanai_buf_size(&lanai->service),
- lanai_buf_size_cardorder(&lanai->service));
- /* Clear ServWrite register to be safe */
- reg_write(lanai, 0, ServWrite_Reg);
- /* ServiceStuff register contains size and address of buffer */
- reg_write(lanai,
- SSTUFF_SET_SIZE(lanai_buf_size_cardorder(&lanai->service)) |
- SSTUFF_SET_ADDR(lanai_buf_dmaaddr(&lanai->service)),
- ServiceStuff_Reg);
- return 0;
- }
- static inline void service_buffer_deallocate(struct lanai_dev *lanai)
- {
- lanai_buf_deallocate(&lanai->service);
- }
- /* Bitfields in service list */
- #define SERVICE_TX (0x80000000) /* Was from transmission */
- #define SERVICE_TRASH (0x40000000) /* RXed PDU was trashed */
- #define SERVICE_CRCERR (0x20000000) /* RXed PDU had CRC error */
- #define SERVICE_CI (0x10000000) /* RXed PDU had CI set */
- #define SERVICE_CLP (0x08000000) /* RXed PDU had CLP set */
- #define SERVICE_STREAM (0x04000000) /* RX Stream mode */
- #define SERVICE_GET_VCI(x) (((x)>>16)&0x3FF)
- #define SERVICE_GET_END(x) ((x)&0x1FFF)
- /* Handle one thing from the service list - returns true if it marked a
- * VCC ready for xmit
- */
- static int handle_service(struct lanai_dev *lanai, u32 s)
- {
- vci_t vci = SERVICE_GET_VCI(s);
- struct lanai_vcc *lvcc;
- vcclist_read_lock();
- lvcc = lanai->vccs[vci];
- if (lvcc == NULL) {
- vcclist_read_unlock();
- DPRINTK("(itf %d) got service entry 0x%X for nonexistent "
- "vcc %dn", lanai->number, s, vci);
- if (s & SERVICE_TX)
- lanai->stats.service_novcc_tx++;
- else
- lanai->stats.service_novcc_rx++;
- return 0;
- }
- if (s & SERVICE_TX) { /* segmentation interrupt */
- if (lvcc->tx.atmvcc == NULL) {
- vcclist_read_unlock();
- DPRINTK("(itf %d) got service entry 0x%X for non-TX "
- "vcc %dn", lanai->number, s, vci);
- lanai->stats.service_notx++;
- return 0;
- }
- vci_bitfield_set(&lanai->transmit_ready, vci);
- lvcc->tx.endptr = SERVICE_GET_END(s);
- vcclist_read_unlock();
- return 1;
- }
- if (lvcc->rx.atmvcc == NULL) {
- vcclist_read_unlock();
- DPRINTK("(itf %d) got service entry 0x%X for non-RX "
- "vcc %dn", lanai->number, s, vci);
- lanai->stats.service_norx++;
- return 0;
- }
- if (lvcc->rx.atmvcc->qos.aal != ATM_AAL5) {
- vcclist_read_unlock();
- DPRINTK("(itf %d) got RX service entry 0x%X for non-AAL5 "
- "vcc %dn", lanai->number, s, vci);
- lanai->stats.service_rxnotaal5++;
- atomic_inc(&lvcc->rx.atmvcc->stats->rx_err);
- return 0;
- }
- if ((s & (SERVICE_TRASH | SERVICE_STREAM | SERVICE_CRCERR)) == 0) {
- vcc_rx_aal5(lvcc, SERVICE_GET_END(s));
- vcclist_read_unlock();
- return 0;
- }
- if (s & SERVICE_TRASH) {
- int bytes;
- vcclist_read_unlock();
- DPRINTK("got trashed rx pdu on vci %dn", vci);
- atomic_inc(&lvcc->rx.atmvcc->stats->rx_err);
- lvcc->stats.x.aal5.service_trash++;
- bytes = (SERVICE_GET_END(s) * 16) -
- (((unsigned long) lvcc->rx.buf.ptr) -
- ((unsigned long) lvcc->rx.buf.start)) + 47;
- if (bytes < 0)
- bytes += lanai_buf_size(&lvcc->rx.buf);
- lanai->stats.ovfl_trash += (bytes / 48);
- return 0;
- }
- if (s & SERVICE_STREAM) {
- vcclist_read_unlock();
- atomic_inc(&lvcc->rx.atmvcc->stats->rx_err);
- lvcc->stats.x.aal5.service_stream++;
- printk(KERN_ERR DEV_LABEL "(itf %d): Got AAL5 stream "
- "PDU on VCI %d!n", lanai->number, vci);
- lanai_reset(lanai);
- return 0;
- }
- DPRINTK("got rx crc error on vci %dn", vci);
- atomic_inc(&lvcc->rx.atmvcc->stats->rx_err);
- lvcc->stats.x.aal5.service_rxcrc++;
- lvcc->rx.buf.ptr = &lvcc->rx.buf.start[SERVICE_GET_END(s) * 4];
- cardvcc_write(lvcc, SERVICE_GET_END(s), vcc_rxreadptr);
- vcclist_read_unlock();
- return 0;
- }
- /* Try transmitting on all VCIs that we marked ready to serve */
- static void iter_transmit(struct lanai_dev *lanai, vci_t vci)
- {
- struct lanai_vcc *lvcc = lanai->vccs[vci];
- if (!vcc_is_backlogged(lvcc))
- return;
- lvcc->tx.unqueue(lanai, lvcc, lvcc->tx.endptr);
- }
- /* Run service queue -- called from interrupt context or with
- * interrupts otherwise disabled and with the lanai->servicelock
- * lock held
- */
- static void run_service(struct lanai_dev *lanai)
- {
- int ntx = 0;
- u32 wreg = reg_read(lanai, ServWrite_Reg);
- const u32 *end = lanai->service.start + wreg;
- while (lanai->service.ptr != end) {
- ntx += handle_service(lanai,
- le32_to_cpup(lanai->service.ptr++));
- if (lanai->service.ptr >= lanai->service.end)
- lanai->service.ptr = lanai->service.start;
- }
- reg_write(lanai, wreg, ServRead_Reg);
- if (ntx != 0) {
- spin_lock(&lanai->txlock);
- vcclist_read_lock();
- vci_bitfield_iterate(lanai, &lanai->transmit_ready,
- iter_transmit);
- vci_bitfield_init(&lanai->transmit_ready);
- vcclist_read_unlock();
- spin_unlock(&lanai->txlock);
- }
- }
- /* -------------------- GATHER STATISTICS: */
- static void get_statistics(struct lanai_dev *lanai)
- {
- u32 statreg = reg_read(lanai, Statistics_Reg);
- lanai->stats.atm_ovfl += STATS_GET_FIFO_OVFL(statreg);
- lanai->stats.hec_err += STATS_GET_HEC_ERR(statreg);
- lanai->stats.vci_trash += STATS_GET_BAD_VCI(statreg);
- lanai->stats.ovfl_trash += STATS_GET_BUF_OVFL(statreg);
- }
- /* -------------------- POLLING TIMER: */
- static void lanai_timed_poll(unsigned long arg)
- {
- #ifndef DEBUG_RW
- struct lanai_dev *lanai = (struct lanai_dev *) arg;
- unsigned long flags;
- #ifdef USE_POWERDOWN
- if (lanai->conf1 & CONFIG1_POWERDOWN)
- return;
- #endif
- spin_lock_irqsave(&lanai->servicelock, flags);
- run_service(lanai);
- spin_unlock_irqrestore(&lanai->servicelock, flags);
- vcc_tx_dequeue_all(lanai);
- get_statistics(lanai);
- mod_timer(&lanai->timer, jiffies + LANAI_POLL_PERIOD);
- #endif /* DEBUG_RW */
- }
- static inline void lanai_timed_poll_start(struct lanai_dev *lanai)
- {
- init_timer(&lanai->timer);
- lanai->timer.expires = jiffies + LANAI_POLL_PERIOD;
- lanai->timer.data = (unsigned long) lanai;
- lanai->timer.function = lanai_timed_poll;
- add_timer(&lanai->timer);
- }
- static inline void lanai_timed_poll_stop(struct lanai_dev *lanai)
- {
- del_timer(&lanai->timer);
- }
- /* -------------------- INTERRUPT SERVICE: */
- static inline void lanai_int_1(struct lanai_dev *lanai, u32 reason)
- {
- u32 ack = 0;
- if (reason & INT_SERVICE) {
- ack = INT_SERVICE;
- spin_lock(&lanai->servicelock);
- run_service(lanai);
- spin_unlock(&lanai->servicelock);
- }
- if (reason & (INT_AAL0_STR | INT_AAL0)) {
- ack |= reason & (INT_AAL0_STR | INT_AAL0);
- vcc_rx_aal0(lanai);
- }
- if (reason & INT_STATS) {
- reason &= ~INT_STATS; /* No need to ack */
- get_statistics(lanai);
- }
- if (reason & INT_STATUS) {
- ack |= reason & INT_STATUS;
- lanai_check_status(lanai);
- }
- if (reason & INT_DMASHUT) {
- printk(KERN_ERR DEV_LABEL "(itf %d): driver error - DMA "
- "shutdown, reason=0x%08X, address=0x%08Xn",
- lanai->number, reason & INT_DMASHUT,
- reg_read(lanai, DMA_Addr_Reg));
- if (reason & INT_TABORTBM) {
- lanai_reset(lanai);
- return;
- }
- ack |= (reason & INT_DMASHUT);
- printk(KERN_ERR DEV_LABEL "(itf %d): re-enabling DMAn",
- lanai->number);
- conf1_write(lanai);
- lanai->stats.dma_reenable++;
- pcistatus_check(lanai, 0);
- }
- if (reason & INT_TABORTSENT) {
- ack |= (reason & INT_TABORTSENT);
- printk(KERN_ERR DEV_LABEL "(itf %d): sent PCI target abortn",
- lanai->number);
- pcistatus_check(lanai, 0);
- }
- if (reason & INT_SEGSHUT) {
- printk(KERN_ERR DEV_LABEL "(itf %d): driver error - "
- "segmentation shutdown, reason=0x%08Xn", lanai->number,
- reason & INT_SEGSHUT);
- lanai_reset(lanai);
- return;
- }
- if (reason & (INT_PING | INT_WAKE)) {
- printk(KERN_ERR DEV_LABEL "(itf %d): driver error - "
- "unexpected interrupt 0x%08X, resettingn",
- lanai->number, reason & (INT_PING | INT_WAKE));
- lanai_reset(lanai);
- return;
- }
- #ifdef DEBUG
- if (ack != reason) {
- DPRINTK("unacked ints: 0x%08Xn", reason & ~ack);
- ack = reason;
- }
- #endif
- if (ack != 0)
- reg_write(lanai, ack, IntAck_Reg);
- }
- static void lanai_int(int irq, void *devid, struct pt_regs *regs)
- {
- struct lanai_dev *lanai = (struct lanai_dev *) devid;
- u32 reason;
- (void) irq; (void) regs; /* unused variables */
- #ifdef USE_POWERDOWN
- if (lanai->conf1 & CONFIG1_POWERDOWN) {
- lanai->conf1 &= ~CONFIG1_POWERDOWN;
- conf1_write(lanai);
- printk(KERN_WARNING DEV_LABEL "(itf %d): Got interrupt "
- "0x%08X while in POWERDOWN, powering upn", lanai->conf1,
- intr_pending(lanai));
- conf2_write(lanai);
- }
- #endif
- while ((reason = intr_pending(lanai)) != 0)
- lanai_int_1(lanai, reason);
- }
- /* TODO - it would be nice if we could use the "delayed interrupt" system
- * to some advantage
- */
- /* -------------------- CHECK BOARD ID/REV: */
- /*
- * The board id and revision are stored both in the reset register and
- * in the PCI configuration space - the documentation says to check
- * each of them. If revp!=NULL we store the revision there
- */
- static int check_board_id_and_rev(const char *name, u32 val, int *revp)
- {
- DPRINTK("%s says board_id=%d, board_rev=%dn", name,
- RESET_GET_BOARD_ID(val), RESET_GET_BOARD_REV(val));
- if (RESET_GET_BOARD_ID(val) != BOARD_ID_LANAI256) {
- printk(KERN_ERR DEV_LABEL ": Found %s board-id %d -- not a "
- "Lanai 25.6n", name, RESET_GET_BOARD_ID(val));
- return -ENODEV;
- }
- if (revp != NULL)
- *revp = RESET_GET_BOARD_REV(val);
- return 0;
- }
- /* -------------------- PCI INITIALIZATION/SHUTDOWN: */
- static inline int __init lanai_pci_start(struct lanai_dev *lanai)
- {
- struct pci_dev *pci = lanai->pci;
- int result;
- u16 w;
- /* Get the pci revision byte */
- result = pci_read_config_byte(pci, PCI_REVISION_ID,
- &lanai->pci_revision);
- if (result != PCIBIOS_SUCCESSFUL) {
- printk(KERN_ERR DEV_LABEL "(itf %d): can't read "
- "PCI_REVISION_ID: %dn", lanai->number, result);
- return -EINVAL;
- }
- result = pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &w);
- if (result != PCIBIOS_SUCCESSFUL) {
- printk(KERN_ERR DEV_LABEL "(itf %d): can't read "
- "PCI_SUBSYSTEM_ID: %dn", lanai->number, result);
- return -EINVAL;
- }
- if ((result = check_board_id_and_rev("PCI", w, NULL)) != 0)
- return result;
- /* Set latency timer to zero as per lanai docs */
- result = pci_write_config_byte(pci, PCI_LATENCY_TIMER, 0);
- if (result != PCIBIOS_SUCCESSFUL) {
- printk(KERN_ERR DEV_LABEL "(itf %d): can't write "
- "PCI_LATENCY_TIMER: %dn", lanai->number, result);
- return -EINVAL;
- }
- result = pci_read_config_word(pci, PCI_COMMAND, &w);
- if (result != PCIBIOS_SUCCESSFUL) {
- printk(KERN_ERR DEV_LABEL "(itf %d): can't read "
- "PCI_COMMAND: %dn", lanai->number, result);
- return -EINVAL;
- }
- w |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_SERR |
- PCI_COMMAND_PARITY);
- result = pci_write_config_word(pci, PCI_COMMAND, w);
- if (result != PCIBIOS_SUCCESSFUL) {
- printk(KERN_ERR DEV_LABEL "(itf %d): can't "
- "write PCI_COMMAND: %dn", lanai->number, result);
- return -EINVAL;
- }
- pcistatus_check(lanai, 1);
- pcistatus_check(lanai, 0);
- return 0;
- }
- static void lanai_pci_stop(struct lanai_dev *lanai)
- {
- struct pci_dev *pci = lanai->pci;
- int result;
- u16 pci_command;
- result = pci_read_config_word(pci, PCI_COMMAND, &pci_command);
- if (result != PCIBIOS_SUCCESSFUL) {
- printk(KERN_ERR DEV_LABEL "(itf %d): can't "
- "read PCI_COMMAND: %dn", lanai->number, result);
- return;
- }
- pci_command &= ~(PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
- result = pci_write_config_word(pci, PCI_COMMAND, pci_command);
- if (result != PCIBIOS_SUCCESSFUL)
- printk(KERN_ERR DEV_LABEL "(itf %d): can't "
- "write PCI_COMMAND: %dn", lanai->number, result);
- }
- /* -------------------- VPI/VCI ALLOCATION: */
- /*
- * We _can_ use VCI==0 for normal traffic, but only for UBR (or we'll
- * get a CBRZERO interrupt), and we can use it only if noone is receiving
- * AAL0 traffic (since they will use the same queue) - according to the
- * docs we shouldn't even use it for AAL0 traffic
- */
- static inline int vci0_is_ok(struct lanai_dev *lanai,
- const struct atm_qos *qos)
- {
- if (qos->txtp.traffic_class == ATM_CBR || qos->aal == ATM_AAL0)
- return 0;
- if (qos->rxtp.traffic_class != ATM_NONE) {
- if (lanai->naal0 != 0)
- return 0;
- lanai->conf2 |= CONFIG2_VCI0_NORMAL;
- #ifdef USE_POWERDOWN
- if ((lanai->conf1 & CONFIG1_POWERDOWN) == 0)
- #endif
- conf2_write(lanai);
- }
- return 1;
- }
- /* return true if vci is currently unused, or if requested qos is
- * compatible
- */
- static int vci_is_ok(struct lanai_dev *lanai, vci_t vci,
- const struct atm_vcc *atmvcc)
- {
- const struct atm_qos *qos = &atmvcc->qos;
- const struct lanai_vcc *lvcc = lanai->vccs[vci];
- if (vci == 0 && !vci0_is_ok(lanai, qos))
- return 0;
- if (lvcc != NULL) {
- if (qos->rxtp.traffic_class != ATM_NONE &&
- lvcc->rx.atmvcc != NULL && lvcc->rx.atmvcc != atmvcc)
- return 0;
- if (qos->txtp.traffic_class != ATM_NONE &&
- lvcc->tx.atmvcc != NULL && lvcc->tx.atmvcc != atmvcc)
- return 0;
- if (qos->txtp.traffic_class == ATM_CBR &&
- lanai->cbrvcc != NULL && lanai->cbrvcc != atmvcc)
- return 0;
- }
- if (qos->aal == ATM_AAL0 && lanai->naal0 == 0 &&
- qos->rxtp.traffic_class != ATM_NONE) {
- const struct lanai_vcc *vci0 = lanai->vccs[0];
- if (vci0 != NULL && vci0->rx.atmvcc != NULL)
- return 0;
- lanai->conf2 &= ~CONFIG2_VCI0_NORMAL;
- #ifdef USE_POWERDOWN
- if ((lanai->conf1 & CONFIG1_POWERDOWN) == 0)
- #endif
- conf2_write(lanai);
- }
- return 1;
- }
- static int lanai_normalize_ci(struct lanai_dev *lanai,
- const struct atm_vcc *atmvcc, short *vpip, vci_t *vcip)
- {
- switch (*vpip) {
- case ATM_VPI_ANY:
- *vpip = 0;
- /* FALLTHROUGH */
- case 0:
- break;
- default:
- return -EADDRINUSE;
- }
- switch (*vcip) {
- case ATM_VCI_ANY:
- for (*vcip = ATM_NOT_RSV_VCI; *vcip < lanai->num_vci;
- (*vcip)++)
- if (vci_is_ok(lanai, *vcip, atmvcc))
- return 0;
- return -EADDRINUSE;
- default:
- if (*vcip >= lanai->num_vci || *vcip < 0 ||
- !vci_is_ok(lanai, *vcip, atmvcc))
- return -EADDRINUSE;
- }
- return 0;
- }
- /* -------------------- MANAGE CBR: */
- /*
- * CBR ICG is stored as a fixed-point number with 4 fractional bits.
- * Note that storing a number greater than 2046.0 will result in
- * incorrect shaping
- */
- #define CBRICG_FRAC_BITS (4)
- #define CBRICG_MAX (2046 << CBRICG_FRAC_BITS)
- /*
- * ICG is related to PCR with the formula PCR = MAXPCR / (ICG + 1)
- * where MAXPCR is (according to the docs) 25600000/(54*8),
- * which is equal to (3125<<9)/27.
- *
- * Solving for ICG, we get:
- * ICG = MAXPCR/PCR - 1
- * ICG = (3125<<9)/(27*PCR) - 1
- * ICG = ((3125<<9) - (27*PCR)) / (27*PCR)
- *
- * The end result is supposed to be a fixed-point number with FRAC_BITS
- * bits of a fractional part, so we keep everything in the numerator
- * shifted by that much as we compute
- *
- */
- static int pcr_to_cbricg(/*const*/ struct atm_qos *qos)
- {
- int rounddown = 0; /* 1 = Round PCR down, i.e. round ICG _up_ */
- int x, icg, pcr = atm_pcr_goal(&qos->txtp);
- if (pcr == 0) /* Use maximum bandwidth */
- return 0;
- if (pcr < 0) {
- rounddown = 1;
- pcr = -pcr;
- }
- x = pcr * 27;
- icg = (3125 << (9 + CBRICG_FRAC_BITS)) - (x << CBRICG_FRAC_BITS);
- if (rounddown)
- icg += x - 1;
- icg /= x;
- if (icg > CBRICG_MAX)
- icg = CBRICG_MAX;
- DPRINTK("pcr_to_cbricg: pcr=%d rounddown=%c icg=%dn",
- pcr, rounddown ? 'Y' : 'N', icg);
- return icg;
- }
- static inline void lanai_cbr_setup(struct lanai_dev *lanai)
- {
- reg_write(lanai, pcr_to_cbricg(&lanai->cbrvcc->qos), CBR_ICG_Reg);
- reg_write(lanai, lanai->cbrvcc->vci, CBR_PTR_Reg);
- lanai->conf2 |= CONFIG2_CBR_ENABLE;
- conf2_write(lanai);
- }
- static inline void lanai_cbr_shutdown(struct lanai_dev *lanai)
- {
- lanai->conf2 &= ~CONFIG2_CBR_ENABLE;
- conf2_write(lanai);
- }
- /* -------------------- OPERATIONS: */
- /* setup a newly detected device */
- static int __init lanai_dev_open(struct atm_dev *atmdev)
- {
- struct lanai_dev *lanai = (struct lanai_dev *) atmdev->dev_data;
- unsigned long raw_base;
- int result;
- DPRINTK("In lanai_dev_open()n");
- /* Basic device fields */
- lanai->number = atmdev->number;
- lanai->num_vci = NUM_VCI;
- vci_bitfield_init(&lanai->backlog_vccs);
- vci_bitfield_init(&lanai->transmit_ready);
- lanai->naal0 = 0;
- #ifdef USE_POWERDOWN
- lanai->nbound = 0;
- #endif
- lanai->cbrvcc = NULL;
- memset(&lanai->stats, 0, sizeof lanai->stats);
- spin_lock_init(&lanai->txlock);
- spin_lock_init(&lanai->servicelock);
- atmdev->ci_range.vpi_bits = 0;
- atmdev->ci_range.vci_bits = 0;
- while (1 << atmdev->ci_range.vci_bits < lanai->num_vci)
- atmdev->ci_range.vci_bits++;
- atmdev->link_rate = ((25600000 / 8 - 8000) / 54);
- /* 3.2: PCI initialization */
- if ((result = lanai_pci_start(lanai)) != 0)
- goto error;
- raw_base = (bus_addr_t) lanai->pci->resource[0].start;
- lanai->base = (bus_addr_t) ioremap(raw_base, LANAI_MAPPING_SIZE);
- if (lanai->base == 0) {
- printk(KERN_ERR DEV_LABEL ": couldn't remap I/O spacen");
- goto error_pci;
- }
- /* 3.3: Reset lanai and PHY */
- reset_board(lanai);
- lanai->conf1 = reg_read(lanai, Config1_Reg);
- lanai->conf1 &= ~(CONFIG1_GPOUT1 | CONFIG1_POWERDOWN |
- CONFIG1_MASK_LEDMODE);
- lanai->conf1 |= CONFIG1_SET_LEDMODE(LEDMODE_NOT_SOOL);
- reg_write(lanai, lanai->conf1 | CONFIG1_GPOUT1, Config1_Reg);
- udelay(1000);
- conf1_write(lanai);
- /*
- * 3.4: Turn on endian mode for big-endian hardware
- * We don't actually want to do this - the actual bit fields
- * in the endian register are not documented anywhere.
- * Instead we do the bit-flipping ourselves on big-endian
- * hardware.
- *
- * 3.5: get the board ID/rev by reading the reset register
- */
- result = check_board_id_and_rev("register",
- reg_read(lanai, Reset_Reg), &lanai->board_rev);
- if (result != 0)
- goto error_unmap;
- /* 3.6: read EEPROM */
- if ((result = eeprom_read(lanai)) != 0)
- goto error_unmap;
- if ((result = eeprom_validate(lanai)) != 0)
- goto error_unmap;
- /* 3.7: re-reset PHY, do loopback tests, setup PHY */
- reg_write(lanai, lanai->conf1 | CONFIG1_GPOUT1, Config1_Reg);
- udelay(1000);
- conf1_write(lanai);
- /* TODO - loopback tests */
- lanai->conf1 |= (CONFIG1_GPOUT2 | CONFIG1_GPOUT3 | CONFIG1_DMA_ENABLE);
- conf1_write(lanai);
- /* 3.8/3.9: test and initialize card SRAM */
- if ((result = sram_test_and_clear(lanai)) != 0)
- goto error_unmap;
- /* 3.10: initialize lanai registers */
- lanai->conf1 |= CONFIG1_DMA_ENABLE;
- conf1_write(lanai);
- if ((result = service_buffer_allocate(lanai)) != 0)
- goto error_unmap;
- if ((result = vcc_table_allocate(lanai)) != 0)
- goto error_service;
- lanai->conf2 = (lanai->num_vci >= 512 ? CONFIG2_HOWMANY : 0) |
- CONFIG2_HEC_DROP | /* ??? */ CONFIG2_PTI7_MODE;
- conf2_write(lanai);
- reg_write(lanai, TX_FIFO_DEPTH, TxDepth_Reg);
- reg_write(lanai, 0, CBR_ICG_Reg); /* CBR defaults to no limit */
- if ((result = request_irq(lanai->pci->irq, lanai_int, SA_SHIRQ,
- "lanai", lanai)) != 0) {
- printk(KERN_ERR DEV_LABEL ": can't allocate interruptn");
- goto error_vcctable;
- }
- MOD_INC_USE_COUNT; /* At this point we can't fail */
- intr_enable(lanai, INT_ALL & ~(INT_PING | INT_WAKE));
- /* 3.11: initialize loop mode (i.e. turn looping off) */
- lanai->conf1 = (lanai->conf1 & ~CONFIG1_MASK_LOOPMODE) |
- CONFIG1_SET_LOOPMODE(LOOPMODE_NORMAL) |
- CONFIG1_GPOUT2 | CONFIG1_GPOUT3;
- conf1_write(lanai);
- lanai->status = reg_read(lanai, Status_Reg);
- /* We're now done initializing this card */
- #ifdef USE_POWERDOWN
- lanai->conf1 |= CONFIG1_POWERDOWN;
- conf1_write(lanai);
- #endif
- memcpy(atmdev->esi, eeprom_mac(lanai), ESI_LEN);
- lanai_timed_poll_start(lanai);
- printk(KERN_NOTICE DEV_LABEL "(itf %d): rev.%d, base=0x%lx, irq=%d "
- "(%02X-%02X-%02X-%02X-%02X-%02X)n", lanai->number,
- lanai->pci_revision, (long) lanai->base, lanai->pci->irq,
- atmdev->esi[0], atmdev->esi[1], atmdev->esi[2],
- atmdev->esi[3], atmdev->esi[4], atmdev->esi[5]);
- printk(KERN_NOTICE DEV_LABEL "(itf %d): LANAI%s, serialno=%d(0x%X), "
- "board_rev=%dn", lanai->number,
- lanai->type==lanai2 ? "2" : "HB", lanai->serialno,
- lanai->serialno, lanai->board_rev);
- return 0;
- error_vcctable:
- vcc_table_deallocate(lanai);
- error_service:
- service_buffer_deallocate(lanai);
- error_unmap:
- reset_board(lanai);
- #ifdef USE_POWERDOWN
- lanai->conf1 = reg_read(lanai, Config1_Reg) | CONFIG1_POWERDOWN;
- conf1_write(lanai);
- #endif
- iounmap((void *) lanai->base);
- error_pci:
- lanai_pci_stop(lanai);
- error:
- return result;
- }
- /* called when device is being shutdown, and all vcc's are gone - higher
- * levels will deallocate the atm device for us
- */
- static void lanai_dev_close(struct atm_dev *atmdev)
- {
- struct lanai_dev *lanai = (struct lanai_dev *) atmdev->dev_data;
- printk(KERN_INFO DEV_LABEL "(itf %d): shutting down interfacen",
- lanai->number);
- lanai_timed_poll_stop(lanai);
- #ifdef USE_POWERDOWN
- lanai->conf1 = reg_read(lanai, Config1_Reg) & ~CONFIG1_POWERDOWN;
- conf1_write(lanai);
- #endif
- intr_disable(lanai, INT_ALL);
- free_irq(lanai->pci->irq, lanai);
- reset_board(lanai);
- #ifdef USE_POWERDOWN
- lanai->conf1 |= CONFIG1_POWERDOWN;
- conf1_write(lanai);
- #endif
- lanai_pci_stop(lanai);
- vcc_table_deallocate(lanai);
- service_buffer_deallocate(lanai);
- iounmap((void *) lanai->base);
- kfree(lanai);
- MOD_DEC_USE_COUNT;
- }
- /* close a vcc */
- static void lanai_close(struct atm_vcc *atmvcc)
- {
- struct lanai_vcc *lvcc = (struct lanai_vcc *) atmvcc->dev_data;
- struct lanai_dev *lanai = (struct lanai_dev *) atmvcc->dev->dev_data;
- if (lvcc == NULL)
- return;
- clear_bit(ATM_VF_READY, &atmvcc->flags);
- clear_bit(ATM_VF_PARTIAL, &atmvcc->flags);
- if (lvcc->rx.atmvcc == atmvcc) {
- lanai_shutdown_rx_vci(lvcc);
- if (atmvcc->qos.aal == ATM_AAL0) {
- if (--lanai->naal0 <= 0)
- aal0_buffer_free(lanai);
- } else
- lanai_buf_deallocate(&lvcc->rx.buf);
- lvcc->rx.atmvcc = NULL;
- }
- if (lvcc->tx.atmvcc == atmvcc) {
- if (atmvcc == lanai->cbrvcc) {
- if (lvcc->vbase != 0)
- lanai_cbr_shutdown(lanai);
- lanai->cbrvcc = NULL;
- }
- lanai_shutdown_tx_vci(lanai, lvcc);
- lanai_buf_deallocate(&lvcc->tx.buf);
- lvcc->tx.atmvcc = NULL;
- }
- if (--lvcc->nref == 0) {
- host_vcc_unbind(lanai, lvcc);
- kfree(lvcc);
- }
- atmvcc->dev_data = NULL;
- clear_bit(ATM_VF_ADDR, &atmvcc->flags);
- }
- /* open a vcc on the card to vpi/vci */
- static int lanai_open(struct atm_vcc *atmvcc, short vpi, int vci)
- {
- struct lanai_dev *lanai;
- struct lanai_vcc *lvcc;
- int result = 0;
- /* we don't support partial open - it's not really useful anyway */
- if ((test_bit(ATM_VF_PARTIAL, &atmvcc->flags)) ||
- (vpi == ATM_VPI_UNSPEC) || (vci == ATM_VCI_UNSPEC))
- return -EINVAL;
- lanai = (struct lanai_dev *) atmvcc->dev->dev_data;
- if ((result = lanai_normalize_ci(lanai, atmvcc, &vpi, &vci)) != 0)
- goto out;
- atmvcc->vpi = vpi;
- atmvcc->vci = vci;
- set_bit(ATM_VF_ADDR, &atmvcc->flags);
- lvcc = lanai->vccs[vci];
- if (atmvcc->qos.aal != ATM_AAL0 && atmvcc->qos.aal != ATM_AAL5)
- return -EINVAL;
- #if 0
- DPRINTK(DEV_LABEL "(itf %d): open %d.%d flags=0x%Xn",
- lanai->number, vpi, vci, (unsigned long) atmvcc->flags);
- #else
- DPRINTK(DEV_LABEL "(itf %d): open %d.%dn", lanai->number, vpi, vci);
- #endif
- if (lvcc == NULL && (lvcc = new_lanai_vcc()) == NULL)
- return -ENOMEM;
- atmvcc->dev_data = lvcc;
- lvcc->nref++;
- if (atmvcc->qos.rxtp.traffic_class != ATM_NONE) {
- APRINTK(lvcc->rx.atmvcc == NULL, "rx.atmvcc!=NULL, vci=%dn",
- vci);
- if (atmvcc->qos.aal == ATM_AAL0) {
- if (lanai->naal0 == 0)
- result = aal0_buffer_allocate(lanai);
- } else
- result = lanai_setup_rx_vci_aal5(
- lanai->number, lvcc, &atmvcc->qos);
- if (result != 0)
- goto out_free;
- lvcc->rx.atmvcc = atmvcc;
- lvcc->stats.rx_nomem = 0;
- lvcc->stats.x.aal5.rx_badlen = 0;
- lvcc->stats.x.aal5.service_trash = 0;
- lvcc->stats.x.aal5.service_stream = 0;
- lvcc->stats.x.aal5.service_rxcrc = 0;
- if (atmvcc->qos.aal == ATM_AAL0)
- lanai->naal0++;
- }
- if (atmvcc->qos.txtp.traffic_class != ATM_NONE) {
- APRINTK(lvcc->tx.atmvcc == NULL, "tx.atmvcc!=NULL, vci=%dn",
- vci);
- result = lanai_setup_tx_vci(lanai->number, lvcc, &atmvcc->qos);
- if (result != 0)
- goto out_free;
- lvcc->tx.atmvcc = atmvcc;
- if (atmvcc->qos.txtp.traffic_class == ATM_CBR) {
- APRINTK(lanai->cbrvcc == NULL,
- "cbrvcc!=NULL, vci=%dn", vci);
- lanai->cbrvcc = atmvcc;
- }
- }
- host_vcc_bind(lanai, lvcc, vci);
- if (atmvcc == lvcc->rx.atmvcc)
- host_vcc_start_rx(lvcc);
- if (atmvcc == lvcc->tx.atmvcc) {
- host_vcc_start_tx(lvcc);
- if (lanai->cbrvcc == atmvcc)
- lanai_cbr_setup(lanai);
- }
- set_bit(ATM_VF_READY, &atmvcc->flags);
- return 0;
- out_free:
- lanai_close(atmvcc);
- out:
- return result;
- }
- /* ioctl operations for card */
- /* NOTE: these are all DEBUGGING ONLY currently */
- static int lanai_ioctl(struct atm_dev *atmdev, unsigned int cmd, void *arg)
- {
- int result = 0;
- struct lanai_dev *lanai = (struct lanai_dev *) atmdev->dev_data;
- switch(cmd) {
- case 2106275:
- shutdown_atm_dev(atmdev);
- return 0;
- case 2200000: {
- unsigned long flags;
- spin_lock_irqsave(&lanai->servicelock, flags);
- run_service(lanai);
- spin_unlock_irqrestore(&lanai->servicelock, flags);
- return 0; }
- case 2200001:
- vcc_tx_dequeue_all(lanai);
- return 0;
- case 2200002:
- get_statistics(lanai);
- return 0;
- case 2200003: {
- int i;
- for (i = 0; i <= 0x5C ; i += 4) {
- if (i==0x48) /* Write-only butt reg */
- continue;
- printk(KERN_CRIT DEV_LABEL " 0x%02X: "
- "0x%08Xn", i,
- (u32) readl(lanai->base + i));
- barrier(); mb();
- pcistatus_check(lanai, 0);
- barrier(); mb();
- }
- return 0; }
- case 2200004: {
- u8 b;
- u16 w;
- u32 dw;
- struct pci_dev *pci = lanai->pci;
- (void) pci_read_config_word(pci, PCI_VENDOR_ID, &w);
- DPRINTK("vendor = 0x%Xn", w);
- (void) pci_read_config_word(pci, PCI_DEVICE_ID, &w);
- DPRINTK("device = 0x%Xn", w);
- (void) pci_read_config_word(pci, PCI_COMMAND, &w);
- DPRINTK("command = 0x%Xn", w);
- (void) pci_read_config_word(pci, PCI_STATUS, &w);
- DPRINTK("status = 0x%Xn", w);
- (void) pci_read_config_dword(pci,
- PCI_CLASS_REVISION, &dw);
- DPRINTK("class/revision = 0x%Xn", dw);
- (void) pci_read_config_byte(pci,
- PCI_CACHE_LINE_SIZE, &b);
- DPRINTK("cache line size = 0x%Xn", b);
- (void) pci_read_config_byte(pci, PCI_LATENCY_TIMER, &b);
- DPRINTK("latency = %d (0x%X)n", b, b);
- (void) pci_read_config_byte(pci, PCI_HEADER_TYPE, &b);
- DPRINTK("header type = 0x%Xn", b);
- (void) pci_read_config_byte(pci, PCI_BIST, &b);
- DPRINTK("bist = 0x%Xn", b);
- /* skipping a few here */
- (void) pci_read_config_byte(pci,
- PCI_INTERRUPT_LINE, &b);
- DPRINTK("pci_int_line = 0x%Xn", b);
- (void) pci_read_config_byte(pci,
- PCI_INTERRUPT_PIN, &b);
- DPRINTK("pci_int_pin = 0x%Xn", b);
- (void) pci_read_config_byte(pci, PCI_MIN_GNT, &b);
- DPRINTK("min_gnt = 0x%Xn", b);
- (void) pci_read_config_byte(pci, PCI_MAX_LAT, &b);
- DPRINTK("max_lat = 0x%Xn", b); }
- return 0;
- #ifdef USE_POWERDOWN
- case 2200005:
- DPRINTK("Coming out of powerdownn");
- lanai->conf1 &= ~CONFIG1_POWERDOWN;
- conf1_write(lanai);
- return 0;
- #endif
- default:
- result = -EINVAL;
- }
- return result;
- }
- static int lanai_send(struct atm_vcc *atmvcc, struct sk_buff *skb)
- {
- struct lanai_vcc *lvcc = (struct lanai_vcc *) atmvcc->dev_data;
- struct lanai_dev *lanai = (struct lanai_dev *) atmvcc->dev->dev_data;
- unsigned long flags;
- if (lvcc == NULL || lvcc->vbase == 0 || lvcc->tx.atmvcc != atmvcc)
- goto einval;
- #ifdef DEBUG
- if (skb == NULL) {
- DPRINTK("lanai_send: skb==NULL for vci=%dn", atmvcc->vci);
- goto einval;
- }
- if (lanai == NULL) {
- DPRINTK("lanai_send: lanai==NULL for vci=%dn", atmvcc->vci);
- goto einval;
- }
- #endif
- ATM_SKB(skb)->vcc = atmvcc;
- switch (atmvcc->qos.aal) {
- case ATM_AAL5:
- spin_lock_irqsave(&lanai->txlock, flags);
- vcc_tx_aal5(lanai, lvcc, skb);
- spin_unlock_irqrestore(&lanai->txlock, flags);
- return 0;
- case ATM_AAL0:
- if (skb->len != ATM_CELL_SIZE-1)
- goto einval;
- /* NOTE - this next line is technically invalid - we haven't unshared skb */
- cpu_to_be32s((u32 *) skb->data);
- spin_lock_irqsave(&lanai->txlock, flags);
- vcc_tx_aal0(lanai, lvcc, skb);
- spin_unlock_irqrestore(&lanai->txlock, flags);
- return 0;
- }
- DPRINTK("lanai_send: bad aal=%d on vci=%dn", atmvcc->qos.aal,
- atmvcc->vci);
- einval:
- lanai_free_skb(atmvcc, skb);
- return -EINVAL;
- }
- static int lanai_change_qos(struct atm_vcc *atmvcc,
- /*const*/ struct atm_qos *qos, int flags)
- {
- return -EBUSY; /* TODO: need to write this */
- }
- #ifndef CONFIG_PROC_FS
- #define lanai_proc_read NULL
- #else
- static int lanai_proc_read(struct atm_dev *atmdev, loff_t *pos, char *page)
- {
- struct lanai_dev *lanai = (struct lanai_dev *) atmdev->dev_data;
- loff_t left = *pos;
- struct lanai_vcc *lvcc;
- if (left-- == 0)
- return sprintf(page, DEV_LABEL "(itf %d): chip=LANAI%s, "
- "serial=%d, magic=0x%08X, num_vci=%dn",
- atmdev->number, lanai->type==lanai2 ? "2" : "HB",
- lanai->serialno, lanai->magicno, lanai->num_vci);
- if (left-- == 0)
- return sprintf(page, "revision: board=%d, pci_if=%dn",
- lanai->board_rev, lanai->pci_revision);
- if (left-- == 0)
- return sprintf(page, "EEPROM ESI: "
- "%02X:%02X:%02X:%02X:%02X:%02Xn",
- lanai->eeprom[EEPROM_MAC + 0],
- lanai->eeprom[EEPROM_MAC + 1],
- lanai->eeprom[EEPROM_MAC + 2],
- lanai->eeprom[EEPROM_MAC + 3],
- lanai->eeprom[EEPROM_MAC + 4],
- lanai->eeprom[EEPROM_MAC + 5]);
- if (left-- == 0)
- return sprintf(page, "status: SOOL=%d, LOCD=%d, LED=%d, "
- "GPIN=%dn", (lanai->status & STATUS_SOOL) ? 1 : 0,
- (lanai->status & STATUS_LOCD) ? 1 : 0,
- (lanai->status & STATUS_LED) ? 1 : 0,
- (lanai->status & STATUS_GPIN) ? 1 : 0);
- if (left-- == 0)
- return sprintf(page, "global buffer sizes: service=%d, "
- "aal0_rx=%dn", lanai_buf_size(&lanai->service),
- lanai->naal0 ? lanai_buf_size(&lanai->aal0buf) : 0);
- if (left-- == 0) {
- get_statistics(lanai);
- return sprintf(page, "cells in error: overflow=%d, "
- "closed_vci=%d, bad_HEC=%d, rx_fifo=%dn",
- lanai->stats.ovfl_trash, lanai->stats.vci_trash,
- lanai->stats.hec_err, lanai->stats.atm_ovfl);
- }
- if (left-- == 0)
- return sprintf(page, "PCI errors: parity_detect=%d, "
- "master_abort=%d, master_target_abort=%d,n",
- lanai->stats.pcierr_parity_detect,
- lanai->stats.pcierr_serr_set,
- lanai->stats.pcierr_m_target_abort);
- if (left-- == 0)
- return sprintf(page, " slave_target_abort=%d, "
- "master_parity=%dn", lanai->stats.pcierr_s_target_abort,
- lanai->stats.pcierr_master_parity);
- if (left-- == 0)
- return sprintf(page, "service list errors: no_vcc_rx=%d, "
- "no_vcc_tx=%d,n", lanai->stats.service_novcc_rx,
- lanai->stats.service_novcc_tx);
- if (left-- == 0)
- return sprintf(page, " no_tx=%d, "
- "no_rx=%d, bad_rx_aal=%dn", lanai->stats.service_norx,
- lanai->stats.service_notx,
- lanai->stats.service_rxnotaal5);
- if (left-- == 0)
- return sprintf(page, "resets: dma=%d, card=%dn",
- lanai->stats.dma_reenable, lanai->stats.card_reset);
- /* At this point, "left" should be the VCI we're looking for */
- vcclist_read_lock();
- for (; ; left++) {
- if (left >= NUM_VCI) {
- left = 0;
- goto out;
- }
- if ((lvcc = lanai->vccs[left]) != NULL)
- break;
- (*pos)++;
- }
- /* Note that we re-use "left" here since we're done with it */
- left = sprintf(page, "VCI %4d: nref=%d, rx_nomem=%d", (vci_t) left,
- lvcc->nref, lvcc->stats.rx_nomem);
- if (lvcc->rx.atmvcc != NULL) {
- left += sprintf(&page[left], ",n rx_AAL=%d",
- lvcc->rx.atmvcc->qos.aal == ATM_AAL5 ? 5 : 0);
- if (lvcc->rx.atmvcc->qos.aal == ATM_AAL5)
- left += sprintf(&page[left], ", rx_buf_size=%d, "
- "rx_bad_len=%d,n rx_service_trash=%d, "
- "rx_service_stream=%d, rx_bad_crc=%d",
- lanai_buf_size(&lvcc->rx.buf),
- lvcc->stats.x.aal5.rx_badlen,
- lvcc->stats.x.aal5.service_trash,
- lvcc->stats.x.aal5.service_stream,
- lvcc->stats.x.aal5.service_rxcrc);
- }
- if (lvcc->tx.atmvcc != NULL)
- left += sprintf(&page[left], ",n tx_AAL=%d, "
- "tx_buf_size=%d, tx_qos=%cBR, tx_backlogged=%c",
- lvcc->tx.atmvcc->qos.aal == ATM_AAL5 ? 5 : 0,
- lanai_buf_size(&lvcc->tx.buf),
- lvcc->tx.atmvcc == lanai->cbrvcc ? 'C' : 'U',
- vcc_is_backlogged(lvcc) ? 'Y' : 'N');
- page[left++] = 'n';
- page[left] = ' ';
- out:
- vcclist_read_unlock();
- return left;
- }
- #endif /* CONFIG_PROC_FS */
- /* -------------------- HOOKS: */
- static const struct atmdev_ops ops = {
- dev_close: lanai_dev_close,
- open: lanai_open,
- close: lanai_close,
- ioctl: lanai_ioctl,
- getsockopt: NULL,
- setsockopt: NULL,
- send: lanai_send,
- sg_send: NULL, /* no scatter-gather on card */
- send_oam: NULL, /* OAM support not in linux yet */
- phy_put: NULL,
- phy_get: NULL,
- feedback: NULL,
- change_qos: lanai_change_qos,
- free_rx_skb: NULL,
- proc_read: lanai_proc_read
- };
- /* detect one type of card LANAI2 or LANAIHB */
- static int __init lanai_detect_1(unsigned int vendor, unsigned int device)
- {
- struct pci_dev *pci = NULL;
- struct lanai_dev *lanai;
- struct atm_dev *atmdev;
- int count = 0, result;
- while ((pci = pci_find_device(vendor, device, pci)) != NULL) {
- lanai = (struct lanai_dev *)
- kmalloc(sizeof *lanai, GFP_KERNEL);
- if (lanai == NULL) {
- printk(KERN_ERR DEV_LABEL ": couldn't allocate "
- "dev_data structure!n");
- break;
- }
- atmdev = atm_dev_register(DEV_LABEL, &ops, -1, 0);
- if (atmdev == NULL) {
- printk(KERN_ERR DEV_LABEL ": couldn't register "
- "atm device!n");
- kfree(lanai);
- break;
- }
- atmdev->dev_data = lanai;
- lanai->pci = pci;
- lanai->type = (enum lanai_type) device;
- if ((result = lanai_dev_open(atmdev)) != 0) {
- DPRINTK("lanai_start() failed, err=%dn", -result);
- atm_dev_deregister(atmdev);
- kfree(lanai);
- continue;
- }
- count++;
- }
- return count;
- }
- #ifdef MODULE
- static
- #endif
- int __init lanai_detect(void)
- {
- return lanai_detect_1(PCI_VENDOR_ID_EF, PCI_VENDOR_ID_EF_ATM_LANAI2) +
- lanai_detect_1(PCI_VENDOR_ID_EF, PCI_VENDOR_ID_EF_ATM_LANAIHB);
- }
- #ifdef MODULE
- int init_module(void)
- {
- if (lanai_detect() == 0) {
- printk(KERN_ERR DEV_LABEL ": no adaptor foundn");
- return -ENODEV;
- }
- return 0;
- }
- void cleanup_module(void)
- {
- /* We'll only get called when all the interfaces are already
- * gone, so there isn't much to do
- */
- DPRINTK("cleanup_module()n");
- }
- MODULE_AUTHOR("Mitchell Blank Jr <mitch@sfgoth.com>");
- MODULE_DESCRIPTION("Efficient Networks Speedstream 3010 driver");
- MODULE_LICENSE("GPL");
- #endif /* MODULE */