The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/cxgb/cxgb_osdep.h

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    1 /**************************************************************************
    2 
    3 Copyright (c) 2007-2008, Chelsio Inc.
    4 All rights reserved.
    5 
    6 Redistribution and use in source and binary forms, with or without
    7 modification, are permitted provided that the following conditions are met:
    8 
    9  1. Redistributions of source code must retain the above copyright notice,
   10     this list of conditions and the following disclaimer.
   11 
   12  2. Neither the name of the Chelsio Corporation nor the names of its
   13     contributors may be used to endorse or promote products derived from
   14     this software without specific prior written permission.
   15 
   16 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   17 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
   20 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   21 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   22 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   23 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   24 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   25 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   26 POSSIBILITY OF SUCH DAMAGE.
   27 
   28 
   29 $FreeBSD$
   30 
   31 ***************************************************************************/
   32 
   33 #include <sys/param.h>
   34 #include <sys/systm.h>
   35 #include <sys/ctype.h>
   36 #include <sys/endian.h>
   37 #include <sys/bus.h>
   38 
   39 #include <sys/lock.h>
   40 #include <sys/mutex.h>
   41 
   42 #include <dev/mii/mii.h>
   43 
   44 #ifdef CONFIG_DEFINED
   45 #include <common/cxgb_version.h>
   46 #include <cxgb_config.h>
   47 #else
   48 #include <dev/cxgb/common/cxgb_version.h>
   49 #include <dev/cxgb/cxgb_config.h>
   50 #endif
   51 
   52 #ifndef _CXGB_OSDEP_H_
   53 #define _CXGB_OSDEP_H_
   54 
   55 typedef struct adapter adapter_t;
   56 struct sge_rspq;
   57 
   58 enum {
   59         TP_TMR_RES = 200,       /* TP timer resolution in usec */
   60         MAX_NPORTS = 4,         /* max # of ports */
   61         TP_SRAM_OFFSET = 4096,  /* TP SRAM content offset in eeprom */
   62         TP_SRAM_LEN = 2112,     /* TP SRAM content offset in eeprom */
   63 };
   64 
   65 struct t3_mbuf_hdr {
   66         struct mbuf *mh_head;
   67         struct mbuf *mh_tail;
   68 };
   69 
   70 #ifndef PANIC_IF
   71 #define PANIC_IF(exp) do {                  \
   72         if (exp)                            \
   73                 panic("BUG: %s", #exp);      \
   74 } while (0)
   75 #endif
   76 
   77 #define m_get_priority(m) ((uintptr_t)(m)->m_pkthdr.rcvif)
   78 #define m_set_priority(m, pri) ((m)->m_pkthdr.rcvif = (struct ifnet *)((uintptr_t)pri))
   79 #define m_set_sgl(m, sgl) ((m)->m_pkthdr.header = (sgl))
   80 #define m_get_sgl(m) ((bus_dma_segment_t *)(m)->m_pkthdr.header)
   81 #define m_set_sgllen(m, len) ((m)->m_pkthdr.ether_vtag = len)
   82 #define m_get_sgllen(m) ((m)->m_pkthdr.ether_vtag)
   83 
   84 /*
   85  * XXX FIXME
   86  */
   87 #define m_set_toep(m, a) ((m)->m_pkthdr.header = (a))
   88 #define m_get_toep(m) ((m)->m_pkthdr.header)
   89 #define m_set_handler(m, handler) ((m)->m_pkthdr.header = (handler))
   90 
   91 #define m_set_socket(m, a) ((m)->m_pkthdr.header = (a))
   92 #define m_get_socket(m) ((m)->m_pkthdr.header)
   93 
   94 #define KTR_CXGB        KTR_SPARE2
   95 void cxgb_log_tcb(struct adapter *sc, unsigned int tid);
   96 
   97 #define MT_DONTFREE  128
   98 
   99 #if __FreeBSD_version > 700030
  100 #define INTR_FILTERS
  101 #define FIRMWARE_LATEST
  102 #endif
  103 
  104 #if ((__FreeBSD_version > 602103) && (__FreeBSD_version < 700000))
  105 #define FIRMWARE_LATEST
  106 #endif
  107 
  108 #if __FreeBSD_version > 700000
  109 #define MSI_SUPPORTED
  110 #define TSO_SUPPORTED
  111 #define VLAN_SUPPORTED
  112 #define TASKQUEUE_CURRENT
  113 #else
  114 #define if_name(ifp) (ifp)->if_xname
  115 #define M_SANITY(m, n)
  116 #endif
  117 
  118 #define __read_mostly __attribute__((__section__(".data.read_mostly")))
  119 
  120 /*
  121  * Workaround for weird Chelsio issue
  122  */
  123 #if __FreeBSD_version > 700029
  124 #define PRIV_SUPPORTED
  125 #endif
  126 
  127 #define CXGB_TX_CLEANUP_THRESHOLD        32
  128 
  129 
  130 #ifdef DEBUG_PRINT
  131 #define DPRINTF printf
  132 #else 
  133 #define DPRINTF(...)
  134 #endif
  135 
  136 #define TX_MAX_SIZE                (1 << 16)    /* 64KB                          */
  137 #define TX_MAX_SEGS                      36     /* maximum supported by card     */
  138 
  139 #define TX_MAX_DESC                       4     /* max descriptors per packet    */
  140 
  141 
  142 #define TX_START_MIN_DESC  (TX_MAX_DESC << 2)
  143 #define TX_START_MAX_DESC (TX_MAX_DESC << 3)    /* maximum number of descriptors
  144                                                  * call to start used per        */
  145 
  146 #define TX_CLEAN_MAX_DESC (TX_MAX_DESC << 4)    /* maximum tx descriptors
  147                                                  * to clean per iteration        */
  148 #define TX_WR_SIZE_MAX    11*1024              /* the maximum total size of packets aggregated into a single
  149                                                 * TX WR
  150                                                 */
  151 #define TX_WR_COUNT_MAX         7              /* the maximum total number of packets that can be
  152                                                 * aggregated into a single TX WR
  153                                                 */
  154 
  155 
  156 #if defined(__i386__) || defined(__amd64__)
  157 #define mb()    __asm volatile("mfence":::"memory")
  158 #define rmb()   __asm volatile("lfence":::"memory")
  159 #define wmb()   __asm volatile("sfence" ::: "memory")
  160 #define smp_mb() mb()
  161 
  162 #define L1_CACHE_BYTES 128
  163 static __inline
  164 void prefetch(void *x) 
  165 { 
  166         __asm volatile("prefetcht0 %0" :: "m" (*(unsigned long *)x));
  167 } 
  168 
  169 extern void kdb_backtrace(void);
  170 
  171 #define WARN_ON(condition) do { \
  172         if (__predict_false((condition)!=0)) {  \
  173                 log(LOG_WARNING, "BUG: warning at %s:%d/%s()\n", __FILE__, __LINE__, __FUNCTION__); \
  174                 kdb_backtrace(); \
  175         } \
  176 } while (0)
  177 
  178 
  179 #else /* !i386 && !amd64 */
  180 #define mb()
  181 #define rmb()
  182 #define wmb()
  183 #define smp_mb()
  184 #define prefetch(x)
  185 #define L1_CACHE_BYTES 32
  186 #endif
  187 
  188 struct buf_ring {
  189         caddr_t          *br_ring;
  190         volatile uint32_t br_cons;
  191         volatile uint32_t br_prod;
  192         int               br_size;
  193         struct mtx        br_lock;
  194 };
  195 
  196 struct buf_ring *buf_ring_alloc(int count, int flags);
  197 void buf_ring_free(struct buf_ring *);
  198 
  199 static __inline int
  200 buf_ring_count(struct buf_ring *mr)
  201 {
  202         int size = mr->br_size;
  203         uint32_t mask = size - 1;
  204         
  205         return ((size + mr->br_prod - mr->br_cons) & mask);
  206 }
  207 
  208 static __inline int
  209 buf_ring_empty(struct buf_ring *mr)
  210 {
  211         return (mr->br_cons == mr->br_prod);
  212 }
  213 
  214 static __inline int
  215 buf_ring_full(struct buf_ring *mr)
  216 {
  217         uint32_t mask;
  218 
  219         mask = mr->br_size - 1;
  220         return (mr->br_cons == ((mr->br_prod + 1) & mask));
  221 }
  222 
  223 /*
  224  * The producer and consumer are independently locked
  225  * this relies on the consumer providing his own serialization
  226  *
  227  */
  228 static __inline void *
  229 buf_ring_dequeue(struct buf_ring *mr)
  230 {
  231         uint32_t prod, cons, mask;
  232         caddr_t *ring, m;
  233         
  234         ring = (caddr_t *)mr->br_ring;
  235         mask = mr->br_size - 1;
  236         cons = mr->br_cons;
  237         mb();
  238         prod = mr->br_prod;
  239         m = NULL;
  240         if (cons != prod) {
  241                 m = ring[cons];
  242                 ring[cons] = NULL;
  243                 mr->br_cons = (cons + 1) & mask;
  244                 mb();
  245         }
  246         return (m);
  247 }
  248 
  249 #ifdef DEBUG_BUFRING
  250 static __inline void
  251 __buf_ring_scan(struct buf_ring *mr, void *m, char *file, int line)
  252 {
  253         int i;
  254 
  255         for (i = 0; i < mr->br_size; i++)
  256                 if (m == mr->br_ring[i])
  257                         panic("%s:%d m=%p present prod=%d cons=%d idx=%d", file,
  258                             line, m, mr->br_prod, mr->br_cons, i);
  259 }
  260 
  261 static __inline void
  262 buf_ring_scan(struct buf_ring *mr, void *m, char *file, int line)
  263 {
  264         mtx_lock(&mr->br_lock);
  265         __buf_ring_scan(mr, m, file, line);
  266         mtx_unlock(&mr->br_lock);
  267 }
  268 
  269 #else
  270 static __inline void
  271 __buf_ring_scan(struct buf_ring *mr, void *m, char *file, int line)
  272 {
  273 }
  274 
  275 static __inline void
  276 buf_ring_scan(struct buf_ring *mr, void *m, char *file, int line)
  277 {
  278 }
  279 #endif
  280 
  281 static __inline int
  282 __buf_ring_enqueue(struct buf_ring *mr, void *m, char *file, int line)
  283 {
  284         
  285         uint32_t prod, cons, mask;
  286         int err;
  287         
  288         mask = mr->br_size - 1;
  289         prod = mr->br_prod;
  290         mb();
  291         cons = mr->br_cons;
  292         __buf_ring_scan(mr, m, file, line);
  293         if (((prod + 1) & mask) != cons) {
  294                 KASSERT(mr->br_ring[prod] == NULL, ("overwriting entry"));
  295                 mr->br_ring[prod] = m;
  296                 mb();
  297                 mr->br_prod = (prod + 1) & mask;
  298                 err = 0;
  299         } else
  300                 err = ENOBUFS;
  301 
  302         return (err);
  303 }
  304 
  305 static __inline int
  306 buf_ring_enqueue_(struct buf_ring *mr, void *m, char *file, int line)
  307 {
  308         int err;
  309         
  310         mtx_lock(&mr->br_lock);
  311         err = __buf_ring_enqueue(mr, m, file, line);
  312         mtx_unlock(&mr->br_lock);
  313 
  314         return (err);
  315 }
  316 
  317 #define buf_ring_enqueue(mr, m) buf_ring_enqueue_((mr), (m), __FILE__, __LINE__)
  318 
  319 
  320 static __inline void *
  321 buf_ring_peek(struct buf_ring *mr)
  322 {
  323         int prod, cons, mask;
  324         caddr_t *ring, m;
  325         
  326         ring = (caddr_t *)mr->br_ring;
  327         mask = mr->br_size - 1;
  328         cons = mr->br_cons;
  329         prod = mr->br_prod;
  330         m = NULL;
  331         if (cons != prod)
  332                 m = ring[cons];
  333 
  334         return (m);
  335 }
  336 
  337 #define DBG_RX          (1 << 0)
  338 static const int debug_flags = DBG_RX;
  339 
  340 #ifdef DEBUG_PRINT
  341 #define DBG(flag, msg) do {     \
  342         if ((flag & debug_flags))       \
  343                 printf msg; \
  344 } while (0)
  345 #else
  346 #define DBG(...)
  347 #endif
  348 
  349 #include <sys/syslog.h>
  350 
  351 #define promisc_rx_mode(rm)  ((rm)->port->ifp->if_flags & IFF_PROMISC) 
  352 #define allmulti_rx_mode(rm) ((rm)->port->ifp->if_flags & IFF_ALLMULTI) 
  353 
  354 #define CH_ERR(adap, fmt, ...) log(LOG_ERR, fmt, ##__VA_ARGS__)
  355 #define CH_WARN(adap, fmt, ...) log(LOG_WARNING, fmt, ##__VA_ARGS__)
  356 #define CH_ALERT(adap, fmt, ...) log(LOG_ALERT, fmt, ##__VA_ARGS__)
  357 
  358 #define t3_os_sleep(x) DELAY((x) * 1000)
  359 
  360 #define test_and_clear_bit(bit, p) atomic_cmpset_int((p), ((*(p)) | (1<<bit)), ((*(p)) & ~(1<<bit)))
  361 
  362 #define max_t(type, a, b) (type)max((a), (b))
  363 #define net_device ifnet
  364 #define cpu_to_be32            htobe32
  365 
  366 /* Standard PHY definitions */
  367 #define BMCR_LOOPBACK           BMCR_LOOP
  368 #define BMCR_ISOLATE            BMCR_ISO
  369 #define BMCR_ANENABLE           BMCR_AUTOEN
  370 #define BMCR_SPEED1000          BMCR_SPEED1
  371 #define BMCR_SPEED100           BMCR_SPEED0
  372 #define BMCR_ANRESTART          BMCR_STARTNEG
  373 #define BMCR_FULLDPLX           BMCR_FDX
  374 #define BMSR_LSTATUS            BMSR_LINK
  375 #define BMSR_ANEGCOMPLETE       BMSR_ACOMP
  376 
  377 #define MII_LPA                 MII_ANLPAR
  378 #define MII_ADVERTISE           MII_ANAR
  379 #define MII_CTRL1000            MII_100T2CR
  380 
  381 #define ADVERTISE_PAUSE_CAP     ANAR_FC
  382 #define ADVERTISE_PAUSE_ASYM    ANAR_X_PAUSE_ASYM
  383 #define ADVERTISE_PAUSE         ANAR_X_PAUSE_SYM
  384 #define ADVERTISE_1000HALF      ANAR_X_HD
  385 #define ADVERTISE_1000FULL      ANAR_X_FD
  386 #define ADVERTISE_10FULL        ANAR_10_FD
  387 #define ADVERTISE_10HALF        ANAR_10
  388 #define ADVERTISE_100FULL       ANAR_TX_FD
  389 #define ADVERTISE_100HALF       ANAR_TX
  390 
  391 
  392 #define ADVERTISE_1000XHALF     ANAR_X_HD
  393 #define ADVERTISE_1000XFULL     ANAR_X_FD
  394 #define ADVERTISE_1000XPSE_ASYM ANAR_X_PAUSE_ASYM
  395 #define ADVERTISE_1000XPAUSE    ANAR_X_PAUSE_SYM
  396 
  397 #define ADVERTISE_CSMA          ANAR_CSMA
  398 #define ADVERTISE_NPAGE         ANAR_NP
  399 
  400 
  401 /* Standard PCI Extended Capaibilities definitions */
  402 #define PCI_CAP_ID_VPD  0x03
  403 #define PCI_VPD_ADDR    2
  404 #define PCI_VPD_ADDR_F  0x8000
  405 #define PCI_VPD_DATA    4
  406 
  407 #define PCI_CAP_ID_EXP  0x10
  408 #define PCI_EXP_DEVCTL  8
  409 #define PCI_EXP_DEVCTL_PAYLOAD 0x00e0
  410 #define PCI_EXP_LNKCTL  16
  411 #define PCI_EXP_LNKSTA  18
  412 
  413 /*
  414  * Linux compatibility macros
  415  */
  416 
  417 /* Some simple translations */
  418 #define __devinit
  419 #define udelay(x) DELAY(x)
  420 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
  421 #define le32_to_cpu(x) le32toh(x)
  422 #define le16_to_cpu(x) le16toh(x)
  423 #define cpu_to_le32(x) htole32(x)
  424 #define swab32(x) bswap32(x)
  425 #define simple_strtoul strtoul
  426 
  427 
  428 #ifndef LINUX_TYPES_DEFINED
  429 typedef uint8_t         u8;
  430 typedef uint16_t        u16;
  431 typedef uint32_t        u32;
  432 typedef uint64_t        u64;
  433  
  434 typedef uint8_t         __u8;
  435 typedef uint16_t        __u16;
  436 typedef uint32_t        __u32;
  437 typedef uint8_t         __be8;
  438 typedef uint16_t        __be16;
  439 typedef uint32_t        __be32;
  440 typedef uint64_t        __be64;
  441 #endif
  442 
  443 
  444 #if BYTE_ORDER == BIG_ENDIAN
  445 #define __BIG_ENDIAN_BITFIELD
  446 #elif BYTE_ORDER == LITTLE_ENDIAN
  447 #define __LITTLE_ENDIAN_BITFIELD
  448 #else
  449 #error "Must set BYTE_ORDER"
  450 #endif
  451 
  452 /* Indicates what features are supported by the interface. */
  453 #define SUPPORTED_10baseT_Half          (1 << 0)
  454 #define SUPPORTED_10baseT_Full          (1 << 1)
  455 #define SUPPORTED_100baseT_Half         (1 << 2)
  456 #define SUPPORTED_100baseT_Full         (1 << 3)
  457 #define SUPPORTED_1000baseT_Half        (1 << 4)
  458 #define SUPPORTED_1000baseT_Full        (1 << 5)
  459 #define SUPPORTED_Autoneg               (1 << 6)
  460 #define SUPPORTED_TP                    (1 << 7)
  461 #define SUPPORTED_AUI                   (1 << 8)
  462 #define SUPPORTED_MII                   (1 << 9) 
  463 #define SUPPORTED_FIBRE                 (1 << 10)
  464 #define SUPPORTED_BNC                   (1 << 11)
  465 #define SUPPORTED_10000baseT_Full       (1 << 12)
  466 #define SUPPORTED_Pause                 (1 << 13)
  467 #define SUPPORTED_Asym_Pause            (1 << 14)
  468 
  469 /* Indicates what features are advertised by the interface. */
  470 #define ADVERTISED_10baseT_Half         (1 << 0)
  471 #define ADVERTISED_10baseT_Full         (1 << 1)
  472 #define ADVERTISED_100baseT_Half        (1 << 2)
  473 #define ADVERTISED_100baseT_Full        (1 << 3)
  474 #define ADVERTISED_1000baseT_Half       (1 << 4)
  475 #define ADVERTISED_1000baseT_Full       (1 << 5)
  476 #define ADVERTISED_Autoneg              (1 << 6)
  477 #define ADVERTISED_TP                   (1 << 7)
  478 #define ADVERTISED_AUI                  (1 << 8)
  479 #define ADVERTISED_MII                  (1 << 9)
  480 #define ADVERTISED_FIBRE                (1 << 10) 
  481 #define ADVERTISED_BNC                  (1 << 11)
  482 #define ADVERTISED_10000baseT_Full      (1 << 12)
  483 #define ADVERTISED_Pause                (1 << 13)
  484 #define ADVERTISED_Asym_Pause           (1 << 14)
  485 
  486 /* Enable or disable autonegotiation.  If this is set to enable,
  487  * the forced link modes above are completely ignored.
  488  */
  489 #define AUTONEG_DISABLE         0x00
  490 #define AUTONEG_ENABLE          0x01
  491 
  492 #define SPEED_10                10
  493 #define SPEED_100               100
  494 #define SPEED_1000              1000
  495 #define SPEED_10000             10000
  496 #define DUPLEX_HALF             0
  497 #define DUPLEX_FULL             1
  498 
  499 #endif

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