/* $NetBSD: if_bge.c,v 1.204 2013/02/25 00:36:22 msaitoh Exp $ */ /* * Copyright (c) 2001 Wind River Systems * Copyright (c) 1997, 1998, 1999, 2001 * Bill Paul . All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Bill Paul. * 4. Neither the name of the author nor the names of any co-contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. * * $FreeBSD: if_bge.c,v 1.13 2002/04/04 06:01:31 wpaul Exp $ */ /* * Broadcom BCM570x family gigabit ethernet driver for NetBSD. * * NetBSD version by: * * Frank van der Linden * Jason Thorpe * Jonathan Stone * * Originally written for FreeBSD by Bill Paul * Senior Engineer, Wind River Systems */ /* * The Broadcom BCM5700 is based on technology originally developed by * Alteon Networks as part of the Tigon I and Tigon II gigabit ethernet * MAC chips. The BCM5700, sometimes referred to as the Tigon III, has * two on-board MIPS R4000 CPUs and can have as much as 16MB of external * SSRAM. The BCM5700 supports TCP, UDP and IP checksum offload, jumbo * frames, highly configurable RX filtering, and 16 RX and TX queues * (which, along with RX filter rules, can be used for QOS applications). * Other features, such as TCP segmentation, may be available as part * of value-added firmware updates. Unlike the Tigon I and Tigon II, * firmware images can be stored in hardware and need not be compiled * into the driver. * * The BCM5700 supports the PCI v2.2 and PCI-X v1.0 standards, and will * function in a 32-bit/64-bit 33/66MHz bus, or a 64-bit/133MHz bus. * * The BCM5701 is a single-chip solution incorporating both the BCM5700 * MAC and a BCM5401 10/100/1000 PHY. Unlike the BCM5700, the BCM5701 * does not support external SSRAM. * * Broadcom also produces a variation of the BCM5700 under the "Altima" * brand name, which is functionally similar but lacks PCI-X support. * * Without external SSRAM, you can only have at most 4 TX rings, * and the use of the mini RX ring is disabled. This seems to imply * that these features are simply not available on the BCM5701. As a * result, this driver does not implement any support for the mini RX * ring. */ #include __KERNEL_RCSID(0, "$NetBSD: if_bge.c,v 1.204 2013/02/25 00:36:22 msaitoh Exp $"); #include "vlan.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef INET #include #include #include #include #endif /* Headers for TCP Segmentation Offload (TSO) */ #include /* n_time for ... */ #include /* ip_{src,dst}, for */ #include /* for struct ip */ #include /* for struct tcphdr */ #include #include #include #include #include #include #include #include #include #include #include #define ETHER_MIN_NOPAD (ETHER_MIN_LEN - ETHER_CRC_LEN) /* i.e., 60 */ /* * Tunable thresholds for rx-side bge interrupt mitigation. */ /* * The pairs of values below were obtained from empirical measurement * on bcm5700 rev B2; they ar designed to give roughly 1 receive * interrupt for every N packets received, where N is, approximately, * the second value (rx_max_bds) in each pair. The values are chosen * such that moving from one pair to the succeeding pair was observed * to roughly halve interrupt rate under sustained input packet load. * The values were empirically chosen to avoid overflowing internal * limits on the bcm5700: increasing rx_ticks much beyond 600 * results in internal wrapping and higher interrupt rates. * The limit of 46 frames was chosen to match NFS workloads. * * These values also work well on bcm5701, bcm5704C, and (less * tested) bcm5703. On other chipsets, (including the Altima chip * family), the larger values may overflow internal chip limits, * leading to increasing interrupt rates rather than lower interrupt * rates. * * Applications using heavy interrupt mitigation (interrupting every * 32 or 46 frames) in both directions may need to increase the TCP * windowsize to above 131072 bytes (e.g., to 199608 bytes) to sustain * full link bandwidth, due to ACKs and window updates lingering * in the RX queue during the 30-to-40-frame interrupt-mitigation window. */ static const struct bge_load_rx_thresh { int rx_ticks; int rx_max_bds; } bge_rx_threshes[] = { { 16, 1 }, /* rx_max_bds = 1 disables interrupt mitigation */ { 32, 2 }, { 50, 4 }, { 100, 8 }, { 192, 16 }, { 416, 32 }, { 598, 46 } }; #define NBGE_RX_THRESH (sizeof(bge_rx_threshes) / sizeof(bge_rx_threshes[0])) /* XXX patchable; should be sysctl'able */ static int bge_auto_thresh = 1; static int bge_rx_thresh_lvl; static int bge_rxthresh_nodenum; typedef int (*bge_eaddr_fcn_t)(struct bge_softc *, uint8_t[]); static int bge_probe(device_t, cfdata_t, void *); static void bge_attach(device_t, device_t, void *); static void bge_release_resources(struct bge_softc *); static int bge_get_eaddr_fw(struct bge_softc *, uint8_t[]); static int bge_get_eaddr_mem(struct bge_softc *, uint8_t[]); static int bge_get_eaddr_nvram(struct bge_softc *, uint8_t[]); static int bge_get_eaddr_eeprom(struct bge_softc *, uint8_t[]); static int bge_get_eaddr(struct bge_softc *, uint8_t[]); static void bge_txeof(struct bge_softc *); static void bge_rxeof(struct bge_softc *); static void bge_asf_driver_up (struct bge_softc *); static void bge_tick(void *); static void bge_stats_update(struct bge_softc *); static void bge_stats_update_regs(struct bge_softc *); static int bge_encap(struct bge_softc *, struct mbuf *, uint32_t *); static int bge_intr(void *); static void bge_start(struct ifnet *); static int bge_ifflags_cb(struct ethercom *); static int bge_ioctl(struct ifnet *, u_long, void *); static int bge_init(struct ifnet *); static void bge_stop(struct ifnet *, int); static void bge_watchdog(struct ifnet *); static int bge_ifmedia_upd(struct ifnet *); static void bge_ifmedia_sts(struct ifnet *, struct ifmediareq *); static uint8_t bge_nvram_getbyte(struct bge_softc *, int, uint8_t *); static int bge_read_nvram(struct bge_softc *, uint8_t *, int, int); static uint8_t bge_eeprom_getbyte(struct bge_softc *, int, uint8_t *); static int bge_read_eeprom(struct bge_softc *, void *, int, int); static void bge_setmulti(struct bge_softc *); static void bge_handle_events(struct bge_softc *); static int bge_alloc_jumbo_mem(struct bge_softc *); #if 0 /* XXX */ static void bge_free_jumbo_mem(struct bge_softc *); #endif static void *bge_jalloc(struct bge_softc *); static void bge_jfree(struct mbuf *, void *, size_t, void *); static int bge_newbuf_std(struct bge_softc *, int, struct mbuf *, bus_dmamap_t); static int bge_newbuf_jumbo(struct bge_softc *, int, struct mbuf *); static int bge_init_rx_ring_std(struct bge_softc *); static void bge_free_rx_ring_std(struct bge_softc *); static int bge_init_rx_ring_jumbo(struct bge_softc *); static void bge_free_rx_ring_jumbo(struct bge_softc *); static void bge_free_tx_ring(struct bge_softc *); static int bge_init_tx_ring(struct bge_softc *); static int bge_chipinit(struct bge_softc *); static int bge_blockinit(struct bge_softc *); static int bge_setpowerstate(struct bge_softc *, int); static uint32_t bge_readmem_ind(struct bge_softc *, int); static void bge_writemem_ind(struct bge_softc *, int, int); static void bge_writembx(struct bge_softc *, int, int); static void bge_writemem_direct(struct bge_softc *, int, int); static void bge_writereg_ind(struct bge_softc *, int, int); static void bge_set_max_readrq(struct bge_softc *); static int bge_miibus_readreg(device_t, int, int); static void bge_miibus_writereg(device_t, int, int, int); static void bge_miibus_statchg(struct ifnet *); #define BGE_RESET_START 1 #define BGE_RESET_STOP 2 static void bge_sig_post_reset(struct bge_softc *, int); static void bge_sig_legacy(struct bge_softc *, int); static void bge_sig_pre_reset(struct bge_softc *, int); static void bge_stop_fw(struct bge_softc *); static int bge_reset(struct bge_softc *); static void bge_link_upd(struct bge_softc *); static void sysctl_bge_init(struct bge_softc *); static int sysctl_bge_verify(SYSCTLFN_PROTO); #ifdef BGE_DEBUG #define DPRINTF(x) if (bgedebug) printf x #define DPRINTFN(n,x) if (bgedebug >= (n)) printf x #define BGE_TSO_PRINTF(x) do { if (bge_tso_debug) printf x ;} while (0) int bgedebug = 0; int bge_tso_debug = 0; void bge_debug_info(struct bge_softc *); #else #define DPRINTF(x) #define DPRINTFN(n,x) #define BGE_TSO_PRINTF(x) #endif #ifdef BGE_EVENT_COUNTERS #define BGE_EVCNT_INCR(ev) (ev).ev_count++ #define BGE_EVCNT_ADD(ev, val) (ev).ev_count += (val) #define BGE_EVCNT_UPD(ev, val) (ev).ev_count = (val) #else #define BGE_EVCNT_INCR(ev) /* nothing */ #define BGE_EVCNT_ADD(ev, val) /* nothing */ #define BGE_EVCNT_UPD(ev, val) /* nothing */ #endif static const struct bge_product { pci_vendor_id_t bp_vendor; pci_product_id_t bp_product; const char *bp_name; } bge_products[] = { /* * The BCM5700 documentation seems to indicate that the hardware * still has the Alteon vendor ID burned into it, though it * should always be overridden by the value in the EEPROM. We'll * check for it anyway. */ { PCI_VENDOR_ALTEON, PCI_PRODUCT_ALTEON_BCM5700, "Broadcom BCM5700 Gigabit Ethernet", }, { PCI_VENDOR_ALTEON, PCI_PRODUCT_ALTEON_BCM5701, "Broadcom BCM5701 Gigabit Ethernet", }, { PCI_VENDOR_ALTIMA, PCI_PRODUCT_ALTIMA_AC1000, "Altima AC1000 Gigabit Ethernet", }, { PCI_VENDOR_ALTIMA, PCI_PRODUCT_ALTIMA_AC1001, "Altima AC1001 Gigabit Ethernet", }, { PCI_VENDOR_ALTIMA, PCI_PRODUCT_ALTIMA_AC9100, "Altima AC9100 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5700, "Broadcom BCM5700 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5701, "Broadcom BCM5701 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5702, "Broadcom BCM5702 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5702X, "Broadcom BCM5702X Gigabit Ethernet" }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5703, "Broadcom BCM5703 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5703X, "Broadcom BCM5703X Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5703_ALT, "Broadcom BCM5703 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5704C, "Broadcom BCM5704C Dual Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5704S, "Broadcom BCM5704S Dual Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5705, "Broadcom BCM5705 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5705F, "Broadcom BCM5705F Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5705K, "Broadcom BCM5705K Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5705M, "Broadcom BCM5705M Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5705M_ALT, "Broadcom BCM5705M Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5714, "Broadcom BCM5714 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5714S, "Broadcom BCM5714S Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5715, "Broadcom BCM5715 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5715S, "Broadcom BCM5715S Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5717, "Broadcom BCM5717 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5718, "Broadcom BCM5718 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5720, "Broadcom BCM5720 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5721, "Broadcom BCM5721 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5722, "Broadcom BCM5722 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5723, "Broadcom BCM5723 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5724, "Broadcom BCM5724 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5750, "Broadcom BCM5750 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5750M, "Broadcom BCM5750M Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5751, "Broadcom BCM5751 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5751F, "Broadcom BCM5751F Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5751M, "Broadcom BCM5751M Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5752, "Broadcom BCM5752 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5752M, "Broadcom BCM5752M Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5753, "Broadcom BCM5753 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5753F, "Broadcom BCM5753F Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5753M, "Broadcom BCM5753M Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5754, "Broadcom BCM5754 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5754M, "Broadcom BCM5754M Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5755, "Broadcom BCM5755 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5755M, "Broadcom BCM5755M Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5756, "Broadcom BCM5756 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5761, "Broadcom BCM5761 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5761E, "Broadcom BCM5761E Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5761S, "Broadcom BCM5761S Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5761SE, "Broadcom BCM5761SE Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5764, "Broadcom BCM5764 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5780, "Broadcom BCM5780 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5780S, "Broadcom BCM5780S Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5781, "Broadcom BCM5781 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5782, "Broadcom BCM5782 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5784M, "BCM5784M NetLink 1000baseT Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5786, "Broadcom BCM5786 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5787, "Broadcom BCM5787 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5787M, "Broadcom BCM5787M Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5788, "Broadcom BCM5788 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5789, "Broadcom BCM5789 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5901, "Broadcom BCM5901 Fast Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5901A2, "Broadcom BCM5901A2 Fast Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5903M, "Broadcom BCM5903M Fast Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5906, "Broadcom BCM5906 Fast Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5906M, "Broadcom BCM5906M Fast Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57760, "Broadcom BCM57760 Fast Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57761, "Broadcom BCM57761 Fast Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57762, "Broadcom BCM57762 Gigabit Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57765, "Broadcom BCM57765 Fast Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57780, "Broadcom BCM57780 Fast Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57781, "Broadcom BCM57781 Fast Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57785, "Broadcom BCM57785 Fast Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57788, "Broadcom BCM57788 Fast Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57790, "Broadcom BCM57790 Fast Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57791, "Broadcom BCM57791 Fast Ethernet", }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57795, "Broadcom BCM57795 Fast Ethernet", }, { PCI_VENDOR_SCHNEIDERKOCH, PCI_PRODUCT_SCHNEIDERKOCH_SK_9DX1, "SysKonnect SK-9Dx1 Gigabit Ethernet", }, { PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3C996, "3Com 3c996 Gigabit Ethernet", }, { PCI_VENDOR_FUJITSU4, PCI_PRODUCT_FUJITSU4_PW008GE4, "Fujitsu PW008GE4 Gigabit Ethernet", }, { PCI_VENDOR_FUJITSU4, PCI_PRODUCT_FUJITSU4_PW008GE5, "Fujitsu PW008GE5 Gigabit Ethernet", }, { PCI_VENDOR_FUJITSU4, PCI_PRODUCT_FUJITSU4_PP250_450_LAN, "Fujitsu Primepower 250/450 Gigabit Ethernet", }, { 0, 0, NULL }, }; /* * XXX: how to handle variants based on 5750 and derivatives: * 5750 5751, 5721, possibly 5714, 5752, and 5708?, which * in general behave like a 5705, except with additional quirks. * This driver's current handling of the 5721 is wrong; * how we map ASIC revision to "quirks" needs more thought. * (defined here until the thought is done). */ #define BGE_IS_5700_FAMILY(sc) ((sc)->bge_flags & BGE_5700_FAMILY) #define BGE_IS_5714_FAMILY(sc) ((sc)->bge_flags & BGE_5714_FAMILY) #define BGE_IS_5705_PLUS(sc) ((sc)->bge_flags & BGE_5705_PLUS) #define BGE_IS_5750_OR_BEYOND(sc) ((sc)->bge_flags & BGE_5750_PLUS) #define BGE_IS_5755_PLUS(sc) ((sc)->bge_flags & BGE_5755_PLUS) #define BGE_IS_JUMBO_CAPABLE(sc) ((sc)->bge_flags & BGE_JUMBO_CAPABLE) static const struct bge_revision { uint32_t br_chipid; const char *br_name; } bge_revisions[] = { { BGE_CHIPID_BCM5700_A0, "BCM5700 A0" }, { BGE_CHIPID_BCM5700_A1, "BCM5700 A1" }, { BGE_CHIPID_BCM5700_B0, "BCM5700 B0" }, { BGE_CHIPID_BCM5700_B1, "BCM5700 B1" }, { BGE_CHIPID_BCM5700_B2, "BCM5700 B2" }, { BGE_CHIPID_BCM5700_B3, "BCM5700 B3" }, /* This is treated like a BCM5700 Bx */ { BGE_CHIPID_BCM5700_ALTIMA, "BCM5700 Altima" }, { BGE_CHIPID_BCM5700_C0, "BCM5700 C0" }, { BGE_CHIPID_BCM5701_A0, "BCM5701 A0" }, { BGE_CHIPID_BCM5701_B0, "BCM5701 B0" }, { BGE_CHIPID_BCM5701_B2, "BCM5701 B2" }, { BGE_CHIPID_BCM5701_B5, "BCM5701 B5" }, { BGE_CHIPID_BCM5703_A0, "BCM5702/5703 A0" }, { BGE_CHIPID_BCM5703_A1, "BCM5702/5703 A1" }, { BGE_CHIPID_BCM5703_A2, "BCM5702/5703 A2" }, { BGE_CHIPID_BCM5703_A3, "BCM5702/5703 A3" }, { BGE_CHIPID_BCM5703_B0, "BCM5702/5703 B0" }, { BGE_CHIPID_BCM5704_A0, "BCM5704 A0" }, { BGE_CHIPID_BCM5704_A1, "BCM5704 A1" }, { BGE_CHIPID_BCM5704_A2, "BCM5704 A2" }, { BGE_CHIPID_BCM5704_A3, "BCM5704 A3" }, { BGE_CHIPID_BCM5704_B0, "BCM5704 B0" }, { BGE_CHIPID_BCM5705_A0, "BCM5705 A0" }, { BGE_CHIPID_BCM5705_A1, "BCM5705 A1" }, { BGE_CHIPID_BCM5705_A2, "BCM5705 A2" }, { BGE_CHIPID_BCM5705_A3, "BCM5705 A3" }, { BGE_CHIPID_BCM5750_A0, "BCM5750 A0" }, { BGE_CHIPID_BCM5750_A1, "BCM5750 A1" }, { BGE_CHIPID_BCM5750_A3, "BCM5750 A3" }, { BGE_CHIPID_BCM5750_B0, "BCM5750 B0" }, { BGE_CHIPID_BCM5750_B1, "BCM5750 B1" }, { BGE_CHIPID_BCM5750_C0, "BCM5750 C0" }, { BGE_CHIPID_BCM5750_C1, "BCM5750 C1" }, { BGE_CHIPID_BCM5750_C2, "BCM5750 C2" }, { BGE_CHIPID_BCM5752_A0, "BCM5752 A0" }, { BGE_CHIPID_BCM5752_A1, "BCM5752 A1" }, { BGE_CHIPID_BCM5752_A2, "BCM5752 A2" }, { BGE_CHIPID_BCM5714_A0, "BCM5714 A0" }, { BGE_CHIPID_BCM5714_B0, "BCM5714 B0" }, { BGE_CHIPID_BCM5714_B3, "BCM5714 B3" }, { BGE_CHIPID_BCM5715_A0, "BCM5715 A0" }, { BGE_CHIPID_BCM5715_A1, "BCM5715 A1" }, { BGE_CHIPID_BCM5715_A3, "BCM5715 A3" }, { BGE_CHIPID_BCM5755_A0, "BCM5755 A0" }, { BGE_CHIPID_BCM5755_A1, "BCM5755 A1" }, { BGE_CHIPID_BCM5755_A2, "BCM5755 A2" }, { BGE_CHIPID_BCM5755_C0, "BCM5755 C0" }, { BGE_CHIPID_BCM5761_A0, "BCM5761 A0" }, { BGE_CHIPID_BCM5761_A1, "BCM5761 A1" }, { BGE_CHIPID_BCM5784_A0, "BCM5784 A0" }, { BGE_CHIPID_BCM5784_A1, "BCM5784 A1" }, /* 5754 and 5787 share the same ASIC ID */ { BGE_CHIPID_BCM5787_A0, "BCM5754/5787 A0" }, { BGE_CHIPID_BCM5787_A1, "BCM5754/5787 A1" }, { BGE_CHIPID_BCM5787_A2, "BCM5754/5787 A2" }, { BGE_CHIPID_BCM5906_A1, "BCM5906 A1" }, { BGE_CHIPID_BCM5906_A2, "BCM5906 A2" }, { BGE_CHIPID_BCM57780_A0, "BCM57780 A0" }, { BGE_CHIPID_BCM57780_A1, "BCM57780 A1" }, { 0, NULL } }; /* * Some defaults for major revisions, so that newer steppings * that we don't know about have a shot at working. */ static const struct bge_revision bge_majorrevs[] = { { BGE_ASICREV_BCM5700, "unknown BCM5700" }, { BGE_ASICREV_BCM5701, "unknown BCM5701" }, { BGE_ASICREV_BCM5703, "unknown BCM5703" }, { BGE_ASICREV_BCM5704, "unknown BCM5704" }, { BGE_ASICREV_BCM5705, "unknown BCM5705" }, { BGE_ASICREV_BCM5750, "unknown BCM5750" }, { BGE_ASICREV_BCM5714_A0, "unknown BCM5714" }, { BGE_ASICREV_BCM5752, "unknown BCM5752" }, { BGE_ASICREV_BCM5780, "unknown BCM5780" }, { BGE_ASICREV_BCM5714, "unknown BCM5714" }, { BGE_ASICREV_BCM5755, "unknown BCM5755" }, { BGE_ASICREV_BCM5761, "unknown BCM5761" }, { BGE_ASICREV_BCM5784, "unknown BCM5784" }, { BGE_ASICREV_BCM5785, "unknown BCM5785" }, /* 5754 and 5787 share the same ASIC ID */ { BGE_ASICREV_BCM5787, "unknown BCM5754/5787" }, { BGE_ASICREV_BCM5906, "unknown BCM5906" }, { BGE_ASICREV_BCM57780, "unknown BCM57780" }, { BGE_ASICREV_BCM5717, "unknown BCM5717" }, { BGE_ASICREV_BCM57765, "unknown BCM57765" }, { BGE_ASICREV_BCM57766, "unknown BCM57766" }, { 0, NULL } }; static int bge_allow_asf = 1; CFATTACH_DECL_NEW(bge, sizeof(struct bge_softc), bge_probe, bge_attach, NULL, NULL); static uint32_t bge_readmem_ind(struct bge_softc *sc, int off) { pcireg_t val; pci_conf_write(sc->sc_pc, sc->sc_pcitag, BGE_PCI_MEMWIN_BASEADDR, off); val = pci_conf_read(sc->sc_pc, sc->sc_pcitag, BGE_PCI_MEMWIN_DATA); return val; } static void bge_writemem_ind(struct bge_softc *sc, int off, int val) { pci_conf_write(sc->sc_pc, sc->sc_pcitag, BGE_PCI_MEMWIN_BASEADDR, off); pci_conf_write(sc->sc_pc, sc->sc_pcitag, BGE_PCI_MEMWIN_DATA, val); } /* * PCI Express only */ static void bge_set_max_readrq(struct bge_softc *sc) { pcireg_t val; val = pci_conf_read(sc->sc_pc, sc->sc_pcitag, sc->bge_pciecap + PCI_PCIE_DCSR); if ((val & PCI_PCIE_DCSR_MAX_READ_REQ) != BGE_PCIE_DEVCTL_MAX_READRQ_4096) { aprint_verbose_dev(sc->bge_dev, "adjust device control 0x%04x ", val); val &= ~PCI_PCIE_DCSR_MAX_READ_REQ; val |= BGE_PCIE_DEVCTL_MAX_READRQ_4096; pci_conf_write(sc->sc_pc, sc->sc_pcitag, sc->bge_pciecap + PCI_PCIE_DCSR, val); aprint_verbose("-> 0x%04x\n", val); } } #ifdef notdef static uint32_t bge_readreg_ind(struct bge_softc *sc, int off) { pci_conf_write(sc->sc_pc, sc->sc_pcitag, BGE_PCI_REG_BASEADDR, off); return (pci_conf_read(sc->sc_pc, sc->sc_pcitag, BGE_PCI_REG_DATA)); } #endif static void bge_writereg_ind(struct bge_softc *sc, int off, int val) { pci_conf_write(sc->sc_pc, sc->sc_pcitag, BGE_PCI_REG_BASEADDR, off); pci_conf_write(sc->sc_pc, sc->sc_pcitag, BGE_PCI_REG_DATA, val); } static void bge_writemem_direct(struct bge_softc *sc, int off, int val) { CSR_WRITE_4(sc, off, val); } static void bge_writembx(struct bge_softc *sc, int off, int val) { if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5906) off += BGE_LPMBX_IRQ0_HI - BGE_MBX_IRQ0_HI; CSR_WRITE_4(sc, off, val); } static uint8_t bge_nvram_getbyte(struct bge_softc *sc, int addr, uint8_t *dest) { uint32_t access, byte = 0; int i; /* Lock. */ CSR_WRITE_4(sc, BGE_NVRAM_SWARB, BGE_NVRAMSWARB_SET1); for (i = 0; i < 8000; i++) { if (CSR_READ_4(sc, BGE_NVRAM_SWARB) & BGE_NVRAMSWARB_GNT1) break; DELAY(20); } if (i == 8000) return 1; /* Enable access. */ access = CSR_READ_4(sc, BGE_NVRAM_ACCESS); CSR_WRITE_4(sc, BGE_NVRAM_ACCESS, access | BGE_NVRAMACC_ENABLE); CSR_WRITE_4(sc, BGE_NVRAM_ADDR, addr & 0xfffffffc); CSR_WRITE_4(sc, BGE_NVRAM_CMD, BGE_NVRAM_READCMD); for (i = 0; i < BGE_TIMEOUT * 10; i++) { DELAY(10); if (CSR_READ_4(sc, BGE_NVRAM_CMD) & BGE_NVRAMCMD_DONE) { DELAY(10); break; } } if (i == BGE_TIMEOUT * 10) { aprint_error_dev(sc->bge_dev, "nvram read timed out\n"); return 1; } /* Get result. */ byte = CSR_READ_4(sc, BGE_NVRAM_RDDATA); *dest = (bswap32(byte) >> ((addr % 4) * 8)) & 0xFF; /* Disable access. */ CSR_WRITE_4(sc, BGE_NVRAM_ACCESS, access); /* Unlock. */ CSR_WRITE_4(sc, BGE_NVRAM_SWARB, BGE_NVRAMSWARB_CLR1); CSR_READ_4(sc, BGE_NVRAM_SWARB); return 0; } /* * Read a sequence of bytes from NVRAM. */ static int bge_read_nvram(struct bge_softc *sc, uint8_t *dest, int off, int cnt) { int error = 0, i; uint8_t byte = 0; if (BGE_ASICREV(sc->bge_chipid) != BGE_ASICREV_BCM5906) return 1; for (i = 0; i < cnt; i++) { error = bge_nvram_getbyte(sc, off + i, &byte); if (error) break; *(dest + i) = byte; } return (error ? 1 : 0); } /* * Read a byte of data stored in the EEPROM at address 'addr.' The * BCM570x supports both the traditional bitbang interface and an * auto access interface for reading the EEPROM. We use the auto * access method. */ static uint8_t bge_eeprom_getbyte(struct bge_softc *sc, int addr, uint8_t *dest) { int i; uint32_t byte = 0; /* * Enable use of auto EEPROM access so we can avoid * having to use the bitbang method. */ BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_AUTO_EEPROM); /* Reset the EEPROM, load the clock period. */ CSR_WRITE_4(sc, BGE_EE_ADDR, BGE_EEADDR_RESET | BGE_EEHALFCLK(BGE_HALFCLK_384SCL)); DELAY(20); /* Issue the read EEPROM command. */ CSR_WRITE_4(sc, BGE_EE_ADDR, BGE_EE_READCMD | addr); /* Wait for completion */ for (i = 0; i < BGE_TIMEOUT * 10; i++) { DELAY(10); if (CSR_READ_4(sc, BGE_EE_ADDR) & BGE_EEADDR_DONE) break; } if (i == BGE_TIMEOUT * 10) { aprint_error_dev(sc->bge_dev, "eeprom read timed out\n"); return 1; } /* Get result. */ byte = CSR_READ_4(sc, BGE_EE_DATA); *dest = (byte >> ((addr % 4) * 8)) & 0xFF; return 0; } /* * Read a sequence of bytes from the EEPROM. */ static int bge_read_eeprom(struct bge_softc *sc, void *destv, int off, int cnt) { int error = 0, i; uint8_t byte = 0; char *dest = destv; for (i = 0; i < cnt; i++) { error = bge_eeprom_getbyte(sc, off + i, &byte); if (error) break; *(dest + i) = byte; } return (error ? 1 : 0); } static int bge_miibus_readreg(device_t dev, int phy, int reg) { struct bge_softc *sc = device_private(dev); uint32_t val; uint32_t autopoll; int i; /* * Broadcom's own driver always assumes the internal * PHY is at GMII address 1. On some chips, the PHY responds * to accesses at all addresses, which could cause us to * bogusly attach the PHY 32 times at probe type. Always * restricting the lookup to address 1 is simpler than * trying to figure out which chips revisions should be * special-cased. */ if (phy != 1) return 0; /* Reading with autopolling on may trigger PCI errors */ autopoll = CSR_READ_4(sc, BGE_MI_MODE); if (autopoll & BGE_MIMODE_AUTOPOLL) { BGE_STS_CLRBIT(sc, BGE_STS_AUTOPOLL); BGE_CLRBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL); DELAY(40); } CSR_WRITE_4(sc, BGE_MI_COMM, BGE_MICMD_READ | BGE_MICOMM_BUSY | BGE_MIPHY(phy) | BGE_MIREG(reg)); for (i = 0; i < BGE_TIMEOUT; i++) { val = CSR_READ_4(sc, BGE_MI_COMM); if (!(val & BGE_MICOMM_BUSY)) break; delay(10); } if (i == BGE_TIMEOUT) { aprint_error_dev(sc->bge_dev, "PHY read timed out\n"); val = 0; goto done; } val = CSR_READ_4(sc, BGE_MI_COMM); done: if (autopoll & BGE_MIMODE_AUTOPOLL) { BGE_STS_SETBIT(sc, BGE_STS_AUTOPOLL); BGE_SETBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL); DELAY(40); } if (val & BGE_MICOMM_READFAIL) return 0; return (val & 0xFFFF); } static void bge_miibus_writereg(device_t dev, int phy, int reg, int val) { struct bge_softc *sc = device_private(dev); uint32_t autopoll; int i; if (phy!=1) { return; } if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5906 && (reg == BRGPHY_MII_1000CTL || reg == BRGPHY_MII_AUXCTL)) { return; } /* Reading with autopolling on may trigger PCI errors */ autopoll = CSR_READ_4(sc, BGE_MI_MODE); if (autopoll & BGE_MIMODE_AUTOPOLL) { delay(40); BGE_STS_CLRBIT(sc, BGE_STS_AUTOPOLL); BGE_CLRBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL); delay(10); /* 40 usec is supposed to be adequate */ } CSR_WRITE_4(sc, BGE_MI_COMM, BGE_MICMD_WRITE | BGE_MICOMM_BUSY | BGE_MIPHY(phy) | BGE_MIREG(reg) | val); for (i = 0; i < BGE_TIMEOUT; i++) { delay(10); if (!(CSR_READ_4(sc, BGE_MI_COMM) & BGE_MICOMM_BUSY)) { delay(5); CSR_READ_4(sc, BGE_MI_COMM); break; } } if (autopoll & BGE_MIMODE_AUTOPOLL) { BGE_STS_SETBIT(sc, BGE_STS_AUTOPOLL); BGE_SETBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL); delay(40); } if (i == BGE_TIMEOUT) aprint_error_dev(sc->bge_dev, "PHY read timed out\n"); } static void bge_miibus_statchg(struct ifnet *ifp) { struct bge_softc *sc = ifp->if_softc; struct mii_data *mii = &sc->bge_mii; /* * Get flow control negotiation result. */ if (IFM_SUBTYPE(mii->mii_media.ifm_cur->ifm_media) == IFM_AUTO && (mii->mii_media_active & IFM_ETH_FMASK) != sc->bge_flowflags) { sc->bge_flowflags = mii->mii_media_active & IFM_ETH_FMASK; mii->mii_media_active &= ~IFM_ETH_FMASK; } BGE_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_PORTMODE); if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T || IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_SX) BGE_SETBIT(sc, BGE_MAC_MODE, BGE_PORTMODE_GMII); else BGE_SETBIT(sc, BGE_MAC_MODE, BGE_PORTMODE_MII); if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) BGE_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX); else BGE_SETBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX); /* * 802.3x flow control */ if (sc->bge_flowflags & IFM_ETH_RXPAUSE) BGE_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_FLOWCTL_ENABLE); else BGE_CLRBIT(sc, BGE_RX_MODE, BGE_RXMODE_FLOWCTL_ENABLE); if (sc->bge_flowflags & IFM_ETH_TXPAUSE) BGE_SETBIT(sc, BGE_TX_MODE, BGE_TXMODE_FLOWCTL_ENABLE); else BGE_CLRBIT(sc, BGE_TX_MODE, BGE_TXMODE_FLOWCTL_ENABLE); } /* * Update rx threshold levels to values in a particular slot * of the interrupt-mitigation table bge_rx_threshes. */ static void bge_set_thresh(struct ifnet *ifp, int lvl) { struct bge_softc *sc = ifp->if_softc; int s; /* For now, just save the new Rx-intr thresholds and record * that a threshold update is pending. Updating the hardware * registers here (even at splhigh()) is observed to * occasionaly cause glitches where Rx-interrupts are not * honoured for up to 10 seconds. jonathan@NetBSD.org, 2003-04-05 */ s = splnet(); sc->bge_rx_coal_ticks = bge_rx_threshes[lvl].rx_ticks; sc->bge_rx_max_coal_bds = bge_rx_threshes[lvl].rx_max_bds; sc->bge_pending_rxintr_change = 1; splx(s); return; } /* * Update Rx thresholds of all bge devices */ static void bge_update_all_threshes(int lvl) { struct ifnet *ifp; const char * const namebuf = "bge"; int namelen; if (lvl < 0) lvl = 0; else if (lvl >= NBGE_RX_THRESH) lvl = NBGE_RX_THRESH - 1; namelen = strlen(namebuf); /* * Now search all the interfaces for this name/number */ IFNET_FOREACH(ifp) { if (strncmp(ifp->if_xname, namebuf, namelen) != 0) continue; /* We got a match: update if doing auto-threshold-tuning */ if (bge_auto_thresh) bge_set_thresh(ifp, lvl); } } /* * Handle events that have triggered interrupts. */ static void bge_handle_events(struct bge_softc *sc) { return; } /* * Memory management for jumbo frames. */ static int bge_alloc_jumbo_mem(struct bge_softc *sc) { char *ptr, *kva; bus_dma_segment_t seg; int i, rseg, state, error; struct bge_jpool_entry *entry; state = error = 0; /* Grab a big chunk o' storage. */ if (bus_dmamem_alloc(sc->bge_dmatag, BGE_JMEM, PAGE_SIZE, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) { aprint_error_dev(sc->bge_dev, "can't alloc rx buffers\n"); return ENOBUFS; } state = 1; if (bus_dmamem_map(sc->bge_dmatag, &seg, rseg, BGE_JMEM, (void **)&kva, BUS_DMA_NOWAIT)) { aprint_error_dev(sc->bge_dev, "can't map DMA buffers (%d bytes)\n", (int)BGE_JMEM); error = ENOBUFS; goto out; } state = 2; if (bus_dmamap_create(sc->bge_dmatag, BGE_JMEM, 1, BGE_JMEM, 0, BUS_DMA_NOWAIT, &sc->bge_cdata.bge_rx_jumbo_map)) { aprint_error_dev(sc->bge_dev, "can't create DMA map\n"); error = ENOBUFS; goto out; } state = 3; if (bus_dmamap_load(sc->bge_dmatag, sc->bge_cdata.bge_rx_jumbo_map, kva, BGE_JMEM, NULL, BUS_DMA_NOWAIT)) { aprint_error_dev(sc->bge_dev, "can't load DMA map\n"); error = ENOBUFS; goto out; } state = 4; sc->bge_cdata.bge_jumbo_buf = (void *)kva; DPRINTFN(1,("bge_jumbo_buf = %p\n", sc->bge_cdata.bge_jumbo_buf)); SLIST_INIT(&sc->bge_jfree_listhead); SLIST_INIT(&sc->bge_jinuse_listhead); /* * Now divide it up into 9K pieces and save the addresses * in an array. */ ptr = sc->bge_cdata.bge_jumbo_buf; for (i = 0; i < BGE_JSLOTS; i++) { sc->bge_cdata.bge_jslots[i] = ptr; ptr += BGE_JLEN; entry = malloc(sizeof(struct bge_jpool_entry), M_DEVBUF, M_NOWAIT); if (entry == NULL) { aprint_error_dev(sc->bge_dev, "no memory for jumbo buffer queue!\n"); error = ENOBUFS; goto out; } entry->slot = i; SLIST_INSERT_HEAD(&sc->bge_jfree_listhead, entry, jpool_entries); } out: if (error != 0) { switch (state) { case 4: bus_dmamap_unload(sc->bge_dmatag, sc->bge_cdata.bge_rx_jumbo_map); case 3: bus_dmamap_destroy(sc->bge_dmatag, sc->bge_cdata.bge_rx_jumbo_map); case 2: bus_dmamem_unmap(sc->bge_dmatag, kva, BGE_JMEM); case 1: bus_dmamem_free(sc->bge_dmatag, &seg, rseg); break; default: break; } } return error; } /* * Allocate a jumbo buffer. */ static void * bge_jalloc(struct bge_softc *sc) { struct bge_jpool_entry *entry; entry = SLIST_FIRST(&sc->bge_jfree_listhead); if (entry == NULL) { aprint_error_dev(sc->bge_dev, "no free jumbo buffers\n"); return NULL; } SLIST_REMOVE_HEAD(&sc->bge_jfree_listhead, jpool_entries); SLIST_INSERT_HEAD(&sc->bge_jinuse_listhead, entry, jpool_entries); return (sc->bge_cdata.bge_jslots[entry->slot]); } /* * Release a jumbo buffer. */ static void bge_jfree(struct mbuf *m, void *buf, size_t size, void *arg) { struct bge_jpool_entry *entry; struct bge_softc *sc; int i, s; /* Extract the softc struct pointer. */ sc = (struct bge_softc *)arg; if (sc == NULL) panic("bge_jfree: can't find softc pointer!"); /* calculate the slot this buffer belongs to */ i = ((char *)buf - (char *)sc->bge_cdata.bge_jumbo_buf) / BGE_JLEN; if ((i < 0) || (i >= BGE_JSLOTS)) panic("bge_jfree: asked to free buffer that we don't manage!"); s = splvm(); entry = SLIST_FIRST(&sc->bge_jinuse_listhead); if (entry == NULL) panic("bge_jfree: buffer not in use!"); entry->slot = i; SLIST_REMOVE_HEAD(&sc->bge_jinuse_listhead, jpool_entries); SLIST_INSERT_HEAD(&sc->bge_jfree_listhead, entry, jpool_entries); if (__predict_true(m != NULL)) pool_cache_put(mb_cache, m); splx(s); } /* * Initialize a standard receive ring descriptor. */ static int bge_newbuf_std(struct bge_softc *sc, int i, struct mbuf *m, bus_dmamap_t dmamap) { struct mbuf *m_new = NULL; struct bge_rx_bd *r; int error; if (dmamap == NULL) { error = bus_dmamap_create(sc->bge_dmatag, MCLBYTES, 1, MCLBYTES, 0, BUS_DMA_NOWAIT, &dmamap); if (error != 0) return error; } sc->bge_cdata.bge_rx_std_map[i] = dmamap; if (m == NULL) { MGETHDR(m_new, M_DONTWAIT, MT_DATA); if (m_new == NULL) return ENOBUFS; MCLGET(m_new, M_DONTWAIT); if (!(m_new->m_flags & M_EXT)) { m_freem(m_new); return ENOBUFS; } m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; } else { m_new = m; m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; m_new->m_data = m_new->m_ext.ext_buf; } if (!(sc->bge_flags & BGE_RX_ALIGNBUG)) m_adj(m_new, ETHER_ALIGN); if (bus_dmamap_load_mbuf(sc->bge_dmatag, dmamap, m_new, BUS_DMA_READ|BUS_DMA_NOWAIT)) return ENOBUFS; bus_dmamap_sync(sc->bge_dmatag, dmamap, 0, dmamap->dm_mapsize, BUS_DMASYNC_PREREAD); sc->bge_cdata.bge_rx_std_chain[i] = m_new; r = &sc->bge_rdata->bge_rx_std_ring[i]; BGE_HOSTADDR(r->bge_addr, dmamap->dm_segs[0].ds_addr); r->bge_flags = BGE_RXBDFLAG_END; r->bge_len = m_new->m_len; r->bge_idx = i; bus_dmamap_sync(sc->bge_dmatag, sc->bge_ring_map, offsetof(struct bge_ring_data, bge_rx_std_ring) + i * sizeof (struct bge_rx_bd), sizeof (struct bge_rx_bd), BUS_DMASYNC_PREWRITE|BUS_DMASYNC_PREREAD); return 0; } /* * Initialize a jumbo receive ring descriptor. This allocates * a jumbo buffer from the pool managed internally by the driver. */ static int bge_newbuf_jumbo(struct bge_softc *sc, int i, struct mbuf *m) { struct mbuf *m_new = NULL; struct bge_rx_bd *r; void *buf = NULL; if (m == NULL) { /* Allocate the mbuf. */ MGETHDR(m_new, M_DONTWAIT, MT_DATA); if (m_new == NULL) return ENOBUFS; /* Allocate the jumbo buffer */ buf = bge_jalloc(sc); if (buf == NULL) { m_freem(m_new); aprint_error_dev(sc->bge_dev, "jumbo allocation failed -- packet dropped!\n"); return ENOBUFS; } /* Attach the buffer to the mbuf. */ m_new->m_len = m_new->m_pkthdr.len = BGE_JUMBO_FRAMELEN; MEXTADD(m_new, buf, BGE_JUMBO_FRAMELEN, M_DEVBUF, bge_jfree, sc); m_new->m_flags |= M_EXT_RW; } else { m_new = m; buf = m_new->m_data = m_new->m_ext.ext_buf; m_new->m_ext.ext_size = BGE_JUMBO_FRAMELEN; } if (!(sc->bge_flags & BGE_RX_ALIGNBUG)) m_adj(m_new, ETHER_ALIGN); bus_dmamap_sync(sc->bge_dmatag, sc->bge_cdata.bge_rx_jumbo_map, mtod(m_new, char *) - (char *)sc->bge_cdata.bge_jumbo_buf, BGE_JLEN, BUS_DMASYNC_PREREAD); /* Set up the descriptor. */ r = &sc->bge_rdata->bge_rx_jumbo_ring[i]; sc->bge_cdata.bge_rx_jumbo_chain[i] = m_new; BGE_HOSTADDR(r->bge_addr, BGE_JUMBO_DMA_ADDR(sc, m_new)); r->bge_flags = BGE_RXBDFLAG_END|BGE_RXBDFLAG_JUMBO_RING; r->bge_len = m_new->m_len; r->bge_idx = i; bus_dmamap_sync(sc->bge_dmatag, sc->bge_ring_map, offsetof(struct bge_ring_data, bge_rx_jumbo_ring) + i * sizeof (struct bge_rx_bd), sizeof (struct bge_rx_bd), BUS_DMASYNC_PREWRITE|BUS_DMASYNC_PREREAD); return 0; } /* * The standard receive ring has 512 entries in it. At 2K per mbuf cluster, * that's 1MB or memory, which is a lot. For now, we fill only the first * 256 ring entries and hope that our CPU is fast enough to keep up with * the NIC. */ static int bge_init_rx_ring_std(struct bge_softc *sc) { int i; if (sc->bge_flags & BGE_RXRING_VALID) return 0; for (i = 0; i < BGE_SSLOTS; i++) { if (bge_newbuf_std(sc, i, NULL, 0) == ENOBUFS) return ENOBUFS; } sc->bge_std = i - 1; bge_writembx(sc, BGE_MBX_RX_STD_PROD_LO, sc->bge_std); sc->bge_flags |= BGE_RXRING_VALID; return 0; } static void bge_free_rx_ring_std(struct bge_softc *sc) { int i; if (!(sc->bge_flags & BGE_RXRING_VALID)) return; for (i = 0; i < BGE_STD_RX_RING_CNT; i++) { if (sc->bge_cdata.bge_rx_std_chain[i] != NULL) { m_freem(sc->bge_cdata.bge_rx_std_chain[i]); sc->bge_cdata.bge_rx_std_chain[i] = NULL; bus_dmamap_destroy(sc->bge_dmatag, sc->bge_cdata.bge_rx_std_map[i]); } memset((char *)&sc->bge_rdata->bge_rx_std_ring[i], 0, sizeof(struct bge_rx_bd)); } sc->bge_flags &= ~BGE_RXRING_VALID; } static int bge_init_rx_ring_jumbo(struct bge_softc *sc) { int i; volatile struct bge_rcb *rcb; if (sc->bge_flags & BGE_JUMBO_RXRING_VALID) return 0; for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) { if (bge_newbuf_jumbo(sc, i, NULL) == ENOBUFS) return ENOBUFS; }; sc->bge_jumbo = i - 1; sc->bge_flags |= BGE_JUMBO_RXRING_VALID; rcb = &sc->bge_rdata->bge_info.bge_jumbo_rx_rcb; rcb->bge_maxlen_flags = 0; CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags); bge_writembx(sc, BGE_MBX_RX_JUMBO_PROD_LO, sc->bge_jumbo); return 0; } static void bge_free_rx_ring_jumbo(struct bge_softc *sc) { int i; if (!(sc->bge_flags & BGE_JUMBO_RXRING_VALID)) return; for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) { if (sc->bge_cdata.bge_rx_jumbo_chain[i] != NULL) { m_freem(sc->bge_cdata.bge_rx_jumbo_chain[i]); sc->bge_cdata.bge_rx_jumbo_chain[i] = NULL; } memset((char *)&sc->bge_rdata->bge_rx_jumbo_ring[i], 0, sizeof(struct bge_rx_bd)); } sc->bge_flags &= ~BGE_JUMBO_RXRING_VALID; } static void bge_free_tx_ring(struct bge_softc *sc) { int i; struct txdmamap_pool_entry *dma; if (!(sc->bge_flags & BGE_TXRING_VALID)) return; for (i = 0; i < BGE_TX_RING_CNT; i++) { if (sc->bge_cdata.bge_tx_chain[i] != NULL) { m_freem(sc->bge_cdata.bge_tx_chain[i]); sc->bge_cdata.bge_tx_chain[i] = NULL; SLIST_INSERT_HEAD(&sc->txdma_list, sc->txdma[i], link); sc->txdma[i] = 0; } memset((char *)&sc->bge_rdata->bge_tx_ring[i], 0, sizeof(struct bge_tx_bd)); } while ((dma = SLIST_FIRST(&sc->txdma_list))) { SLIST_REMOVE_HEAD(&sc->txdma_list, link); bus_dmamap_destroy(sc->bge_dmatag, dma->dmamap); free(dma, M_DEVBUF); } sc->bge_flags &= ~BGE_TXRING_VALID; } static int bge_init_tx_ring(struct bge_softc *sc) { int i; bus_dmamap_t dmamap; struct txdmamap_pool_entry *dma; if (sc->bge_flags & BGE_TXRING_VALID) return 0; sc->bge_txcnt = 0; sc->bge_tx_saved_considx = 0; /* Initialize transmit producer index for host-memory send ring. */ sc->bge_tx_prodidx = 0; bge_writembx(sc, BGE_MBX_TX_HOST_PROD0_LO, sc->bge_tx_prodidx); /* 5700 b2 errata */ if (BGE_CHIPREV(sc->bge_chipid) == BGE_CHIPREV_5700_BX) bge_writembx(sc, BGE_MBX_TX_HOST_PROD0_LO, sc->bge_tx_prodidx); /* NIC-memory send ring not used; initialize to zero. */ bge_writembx(sc, BGE_MBX_TX_NIC_PROD0_LO, 0); /* 5700 b2 errata */ if (BGE_CHIPREV(sc->bge_chipid) == BGE_CHIPREV_5700_BX) bge_writembx(sc, BGE_MBX_TX_NIC_PROD0_LO, 0); SLIST_INIT(&sc->txdma_list); for (i = 0; i < BGE_RSLOTS; i++) { if (bus_dmamap_create(sc->bge_dmatag, BGE_TXDMA_MAX, BGE_NTXSEG, ETHER_MAX_LEN_JUMBO, 0, BUS_DMA_NOWAIT, &dmamap)) return ENOBUFS; if (dmamap == NULL) panic("dmamap NULL in bge_init_tx_ring"); dma = malloc(sizeof(*dma), M_DEVBUF, M_NOWAIT); if (dma == NULL) { aprint_error_dev(sc->bge_dev, "can't alloc txdmamap_pool_entry\n"); bus_dmamap_destroy(sc->bge_dmatag, dmamap); return ENOMEM; } dma->dmamap = dmamap; SLIST_INSERT_HEAD(&sc->txdma_list, dma, link); } sc->bge_flags |= BGE_TXRING_VALID; return 0; } static void bge_setmulti(struct bge_softc *sc) { struct ethercom *ac = &sc->ethercom; struct ifnet *ifp = &ac->ec_if; struct ether_multi *enm; struct ether_multistep step; uint32_t hashes[4] = { 0, 0, 0, 0 }; uint32_t h; int i; if (ifp->if_flags & IFF_PROMISC) goto allmulti; /* Now program new ones. */ ETHER_FIRST_MULTI(step, ac, enm); while (enm != NULL) { if (memcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN)) { /* * We must listen to a range of multicast addresses. * For now, just accept all multicasts, rather than * trying to set only those filter bits needed to match * the range. (At this time, the only use of address * ranges is for IP multicast routing, for which the * range is big enough to require all bits set.) */ goto allmulti; } h = ether_crc32_le(enm->enm_addrlo, ETHER_ADDR_LEN); /* Just want the 7 least-significant bits. */ h &= 0x7f; hashes[(h & 0x60) >> 5] |= 1 << (h & 0x1F); ETHER_NEXT_MULTI(step, enm); } ifp->if_flags &= ~IFF_ALLMULTI; goto setit; allmulti: ifp->if_flags |= IFF_ALLMULTI; hashes[0] = hashes[1] = hashes[2] = hashes[3] = 0xffffffff; setit: for (i = 0; i < 4; i++) CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), hashes[i]); } static void bge_sig_pre_reset(struct bge_softc *sc, int type) { /* * Some chips don't like this so only do this if ASF is enabled */ if (sc->bge_asf_mode) bge_writemem_ind(sc, BGE_SOFTWARE_GENCOMM, BGE_MAGIC_NUMBER); if (sc->bge_asf_mode & ASF_NEW_HANDSHAKE) { switch (type) { case BGE_RESET_START: bge_writemem_ind(sc, BGE_SDI_STATUS, 0x1); /* START */ break; case BGE_RESET_STOP: bge_writemem_ind(sc, BGE_SDI_STATUS, 0x2); /* UNLOAD */ break; } } } static void bge_sig_post_reset(struct bge_softc *sc, int type) { if (sc->bge_asf_mode & ASF_NEW_HANDSHAKE) { switch (type) { case BGE_RESET_START: bge_writemem_ind(sc, BGE_SDI_STATUS, 0x80000001); /* START DONE */ break; case BGE_RESET_STOP: bge_writemem_ind(sc, BGE_SDI_STATUS, 0x80000002); break; } } } static void bge_sig_legacy(struct bge_softc *sc, int type) { if (sc->bge_asf_mode) { switch (type) { case BGE_RESET_START: bge_writemem_ind(sc, BGE_SDI_STATUS, 0x1); /* START */ break; case BGE_RESET_STOP: bge_writemem_ind(sc, BGE_SDI_STATUS, 0x2); /* UNLOAD */ break; } } } static void bge_stop_fw(struct bge_softc *sc) { int i; if (sc->bge_asf_mode) { bge_writemem_ind(sc, BGE_SOFTWARE_GENCOMM_FW, BGE_FW_PAUSE); CSR_WRITE_4(sc, BGE_CPU_EVENT, CSR_READ_4(sc, BGE_CPU_EVENT) | (1 << 14)); for (i = 0; i < 100; i++) { if (!(CSR_READ_4(sc, BGE_CPU_EVENT) & (1 << 14))) break; DELAY(10); } } } static int bge_poll_fw(struct bge_softc *sc) { uint32_t val; int i; if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5906) { for (i = 0; i < BGE_TIMEOUT; i++) { val = CSR_READ_4(sc, BGE_VCPU_STATUS); if (val & BGE_VCPU_STATUS_INIT_DONE) break; DELAY(100); } if (i >= BGE_TIMEOUT) { aprint_error_dev(sc->bge_dev, "reset timed out\n"); return -1; } } else if ((sc->bge_flags & BGE_NO_EEPROM) == 0) { /* * Poll the value location we just wrote until * we see the 1's complement of the magic number. * This indicates that the firmware initialization * is complete. * XXX 1000ms for Flash and 10000ms for SEEPROM. */ for (i = 0; i < BGE_TIMEOUT; i++) { val = bge_readmem_ind(sc, BGE_SOFTWARE_GENCOMM); if (val == ~BGE_MAGIC_NUMBER) break; DELAY(10); } if (i >= BGE_TIMEOUT) { aprint_error_dev(sc->bge_dev, "firmware handshake timed out, val = %x\n", val); return -1; } } return 0; } /* * Do endian, PCI and DMA initialization. Also check the on-board ROM * self-test results. */ static int bge_chipinit(struct bge_softc *sc) { int i; uint32_t dma_rw_ctl; /* Set endianness before we access any non-PCI registers. */ pci_conf_write(sc->sc_pc, sc->sc_pcitag, BGE_PCI_MISC_CTL, BGE_INIT); /* Set power state to D0. */ bge_setpowerstate(sc, 0); /* Clear the MAC control register */ CSR_WRITE_4(sc, BGE_MAC_MODE, 0); /* * Clear the MAC statistics block in the NIC's * internal memory. */ for (i = BGE_STATS_BLOCK; i < BGE_STATS_BLOCK_END + 1; i += sizeof(uint32_t)) BGE_MEMWIN_WRITE(sc->sc_pc, sc->sc_pcitag, i, 0); for (i = BGE_STATUS_BLOCK; i < BGE_STATUS_BLOCK_END + 1; i += sizeof(uint32_t)) BGE_MEMWIN_WRITE(sc->sc_pc, sc->sc_pcitag, i, 0); /* Set up the PCI DMA control register. */ dma_rw_ctl = BGE_PCI_READ_CMD | BGE_PCI_WRITE_CMD; if (sc->bge_flags & BGE_PCIE) { /* Read watermark not used, 128 bytes for write. */ DPRINTFN(4, ("(%s: PCI-Express DMA setting)\n", device_xname(sc->bge_dev))); dma_rw_ctl |= BGE_PCIDMARWCTL_WR_WAT_SHIFT(3); } else if (sc->bge_flags & BGE_PCIX) { DPRINTFN(4, ("(:%s: PCI-X DMA setting)\n", device_xname(sc->bge_dev))); /* PCI-X bus */ if (BGE_IS_5714_FAMILY(sc)) { /* 256 bytes for read and write. */ dma_rw_ctl |= BGE_PCIDMARWCTL_RD_WAT_SHIFT(2) | BGE_PCIDMARWCTL_WR_WAT_SHIFT(2); if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5780) dma_rw_ctl |= BGE_PCIDMARWCTL_ONEDMA_ATONCE_GLOBAL; else dma_rw_ctl |= BGE_PCIDMARWCTL_ONEDMA_ATONCE_LOCAL; } else if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5704) { /* 1536 bytes for read, 384 bytes for write. */ dma_rw_ctl |= BGE_PCIDMARWCTL_RD_WAT_SHIFT(7) | BGE_PCIDMARWCTL_WR_WAT_SHIFT(3); } else { /* 384 bytes for read and write. */ dma_rw_ctl |= BGE_PCIDMARWCTL_RD_WAT_SHIFT(3) | BGE_PCIDMARWCTL_WR_WAT_SHIFT(3) | (0x0F); } if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5703 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5704) { uint32_t tmp; /* Set ONEDMA_ATONCE for hardware workaround. */ tmp = CSR_READ_4(sc, BGE_PCI_CLKCTL) & 0x1f; if (tmp == 6 || tmp == 7) dma_rw_ctl |= BGE_PCIDMARWCTL_ONEDMA_ATONCE_GLOBAL; /* Set PCI-X DMA write workaround. */ dma_rw_ctl |= BGE_PCIDMARWCTL_ASRT_ALL_BE; } } else { /* Conventional PCI bus: 256 bytes for read and write. */ DPRINTFN(4, ("(%s: PCI 2.2 DMA setting)\n", device_xname(sc->bge_dev))); dma_rw_ctl |= BGE_PCIDMARWCTL_RD_WAT_SHIFT(7) | BGE_PCIDMARWCTL_WR_WAT_SHIFT(7); if (BGE_ASICREV(sc->bge_chipid) != BGE_ASICREV_BCM5705 && BGE_ASICREV(sc->bge_chipid) != BGE_ASICREV_BCM5750) dma_rw_ctl |= 0x0F; } if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5700 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5701) dma_rw_ctl |= BGE_PCIDMARWCTL_USE_MRM | BGE_PCIDMARWCTL_ASRT_ALL_BE; if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5703 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5704) dma_rw_ctl &= ~BGE_PCIDMARWCTL_MINDMA; pci_conf_write(sc->sc_pc, sc->sc_pcitag, BGE_PCI_DMA_RW_CTL, dma_rw_ctl); /* * Set up general mode register. */ CSR_WRITE_4(sc, BGE_MODE_CTL, BGE_DMA_SWAP_OPTIONS | BGE_MODECTL_MAC_ATTN_INTR | BGE_MODECTL_HOST_SEND_BDS | BGE_MODECTL_TX_NO_PHDR_CSUM); /* * BCM5701 B5 have a bug causing data corruption when using * 64-bit DMA reads, which can be terminated early and then * completed later as 32-bit accesses, in combination with * certain bridges. */ if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5701 && sc->bge_chipid == BGE_CHIPID_BCM5701_B5) BGE_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_FORCE_PCI32); /* * Tell the firmware the driver is running */ if (sc->bge_asf_mode & ASF_STACKUP) BGE_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP); /* * Disable memory write invalidate. Apparently it is not supported * properly by these devices. */ PCI_CLRBIT(sc->sc_pc, sc->sc_pcitag, PCI_COMMAND_STATUS_REG, PCI_COMMAND_INVALIDATE_ENABLE); #ifdef __brokenalpha__ /* * Must insure that we do not cross an 8K (bytes) boundary * for DMA reads. Our highest limit is 1K bytes. This is a * restriction on some ALPHA platforms with early revision * 21174 PCI chipsets, such as the AlphaPC 164lx */ PCI_SETBIT(sc, BGE_PCI_DMA_RW_CTL, BGE_PCI_READ_BNDRY_1024, 4); #endif /* Set the timer prescaler (always 66MHz) */ CSR_WRITE_4(sc, BGE_MISC_CFG, 65 << 1/*BGE_32BITTIME_66MHZ*/); if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5906) { DELAY(40); /* XXX */ /* Put PHY into ready state */ BGE_CLRBIT(sc, BGE_MISC_CFG, BGE_MISCCFG_EPHY_IDDQ); CSR_READ_4(sc, BGE_MISC_CFG); /* Flush */ DELAY(40); } return 0; } static int bge_blockinit(struct bge_softc *sc) { volatile struct bge_rcb *rcb; bus_size_t rcb_addr; int i; struct ifnet *ifp = &sc->ethercom.ec_if; bge_hostaddr taddr; uint32_t val; /* * Initialize the memory window pointer register so that * we can access the first 32K of internal NIC RAM. This will * allow us to set up the TX send ring RCBs and the RX return * ring RCBs, plus other things which live in NIC memory. */ pci_conf_write(sc->sc_pc, sc->sc_pcitag, BGE_PCI_MEMWIN_BASEADDR, 0); /* Step 33: Configure mbuf memory pool */ if (BGE_IS_5700_FAMILY(sc)) { CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_BASEADDR, BGE_BUFFPOOL_1); if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5704) CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_LEN, 0x10000); else CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_LEN, 0x18000); /* Configure DMA resource pool */ CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_BASEADDR, BGE_DMA_DESCRIPTORS); CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_LEN, 0x2000); } /* Step 35: Configure mbuf pool watermarks */ #ifdef ORIG_WPAUL_VALUES CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 24); CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 24); CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 48); #else /* new broadcom docs strongly recommend these: */ if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5717 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM57765 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM57766) { CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0); CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x2a); CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0xa0); } else if (BGE_IS_5705_PLUS(sc)) { CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0); if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5906) { CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x04); CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x10); } else { CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x10); CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x60); } } else if (!BGE_IS_5705_PLUS(sc)) { if (ifp->if_mtu > ETHER_MAX_LEN) { CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x50); CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x20); CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x60); } else { CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 304); CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 152); CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 380); } } else { CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0); CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x10); CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x60); } #endif /* Step 36: Configure DMA resource watermarks */ CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_LOWAT, 5); CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_HIWAT, 10); /* Step 38: Enable buffer manager */ CSR_WRITE_4(sc, BGE_BMAN_MODE, BGE_BMANMODE_ENABLE | BGE_BMANMODE_LOMBUF_ATTN); /* Step 39: Poll for buffer manager start indication */ for (i = 0; i < BGE_TIMEOUT * 2; i++) { if (CSR_READ_4(sc, BGE_BMAN_MODE) & BGE_BMANMODE_ENABLE) break; DELAY(10); } if (i == BGE_TIMEOUT * 2) { aprint_error_dev(sc->bge_dev, "buffer manager failed to start\n"); return ENXIO; } /* Step 40: Enable flow-through queues */ CSR_WRITE_4(sc, BGE_FTQ_RESET, 0xFFFFFFFF); CSR_WRITE_4(sc, BGE_FTQ_RESET, 0); /* Wait until queue initialization is complete */ for (i = 0; i < BGE_TIMEOUT * 2; i++) { if (CSR_READ_4(sc, BGE_FTQ_RESET) == 0) break; DELAY(10); } if (i == BGE_TIMEOUT * 2) { aprint_error_dev(sc->bge_dev, "flow-through queue init failed\n"); return ENXIO; } /* Step 41: Initialize the standard RX ring control block */ rcb = &sc->bge_rdata->bge_info.bge_std_rx_rcb; BGE_HOSTADDR(rcb->bge_hostaddr, BGE_RING_DMA_ADDR(sc, bge_rx_std_ring)); if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5717 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM57765 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM57766) rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(512, BGE_MAX_FRAMELEN << 2); else if (BGE_IS_5705_PLUS(sc)) rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(512, 0); else rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(BGE_MAX_FRAMELEN, 0); rcb->bge_nicaddr = BGE_STD_RX_RINGS; CSR_WRITE_4(sc, BGE_RX_STD_RCB_HADDR_HI, rcb->bge_hostaddr.bge_addr_hi); CSR_WRITE_4(sc, BGE_RX_STD_RCB_HADDR_LO, rcb->bge_hostaddr.bge_addr_lo); CSR_WRITE_4(sc, BGE_RX_STD_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags); CSR_WRITE_4(sc, BGE_RX_STD_RCB_NICADDR, rcb->bge_nicaddr); /* * Step 42: Initialize the jumbo RX ring control block * We set the 'ring disabled' bit in the flags * field until we're actually ready to start * using this ring (i.e. once we set the MTU * high enough to require it). */ if (BGE_IS_JUMBO_CAPABLE(sc)) { rcb = &sc->bge_rdata->bge_info.bge_jumbo_rx_rcb; BGE_HOSTADDR(rcb->bge_hostaddr, BGE_RING_DMA_ADDR(sc, bge_rx_jumbo_ring)); rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(BGE_MAX_FRAMELEN, BGE_RCB_FLAG_RING_DISABLED); rcb->bge_nicaddr = BGE_JUMBO_RX_RINGS; CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_HADDR_HI, rcb->bge_hostaddr.bge_addr_hi); CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_HADDR_LO, rcb->bge_hostaddr.bge_addr_lo); CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags); CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_NICADDR, rcb->bge_nicaddr); /* Set up dummy disabled mini ring RCB */ rcb = &sc->bge_rdata->bge_info.bge_mini_rx_rcb; rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(0, BGE_RCB_FLAG_RING_DISABLED); CSR_WRITE_4(sc, BGE_RX_MINI_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags); bus_dmamap_sync(sc->bge_dmatag, sc->bge_ring_map, offsetof(struct bge_ring_data, bge_info), sizeof (struct bge_gib), BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); } /* * Set the BD ring replenish thresholds. The recommended * values are 1/8th the number of descriptors allocated to * each ring. */ i = BGE_STD_RX_RING_CNT / 8; /* * Use a value of 8 for the following chips to workaround HW errata. * Some of these chips have been added based on empirical * evidence (they don't work unless this is done). */ if (BGE_IS_5705_PLUS(sc)) i = 8; CSR_WRITE_4(sc, BGE_RBDI_STD_REPL_THRESH, i); CSR_WRITE_4(sc, BGE_RBDI_JUMBO_REPL_THRESH, BGE_JUMBO_RX_RING_CNT / 8); if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5717 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM57765 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM57766) { CSR_WRITE_4(sc, BGE_STD_REPL_LWM, 4); CSR_WRITE_4(sc, BGE_JUMBO_REPL_LWM, 4); } /* * Disable all unused send rings by setting the 'ring disabled' * bit in the flags field of all the TX send ring control blocks. * These are located in NIC memory. */ rcb_addr = BGE_MEMWIN_START + BGE_SEND_RING_RCB; for (i = 0; i < BGE_TX_RINGS_EXTSSRAM_MAX; i++) { RCB_WRITE_4(sc, rcb_addr, bge_maxlen_flags, BGE_RCB_MAXLEN_FLAGS(0, BGE_RCB_FLAG_RING_DISABLED)); RCB_WRITE_4(sc, rcb_addr, bge_nicaddr, 0); rcb_addr += sizeof(struct bge_rcb); } /* Configure TX RCB 0 (we use only the first ring) */ rcb_addr = BGE_MEMWIN_START + BGE_SEND_RING_RCB; BGE_HOSTADDR(taddr, BGE_RING_DMA_ADDR(sc, bge_tx_ring)); RCB_WRITE_4(sc, rcb_addr, bge_hostaddr.bge_addr_hi, taddr.bge_addr_hi); RCB_WRITE_4(sc, rcb_addr, bge_hostaddr.bge_addr_lo, taddr.bge_addr_lo); RCB_WRITE_4(sc, rcb_addr, bge_nicaddr, BGE_NIC_TXRING_ADDR(0, BGE_TX_RING_CNT)); if (BGE_IS_5700_FAMILY(sc)) RCB_WRITE_4(sc, rcb_addr, bge_maxlen_flags, BGE_RCB_MAXLEN_FLAGS(BGE_TX_RING_CNT, 0)); /* Disable all unused RX return rings */ rcb_addr = BGE_MEMWIN_START + BGE_RX_RETURN_RING_RCB; for (i = 0; i < BGE_RX_RINGS_MAX; i++) { RCB_WRITE_4(sc, rcb_addr, bge_hostaddr.bge_addr_hi, 0); RCB_WRITE_4(sc, rcb_addr, bge_hostaddr.bge_addr_lo, 0); RCB_WRITE_4(sc, rcb_addr, bge_maxlen_flags, BGE_RCB_MAXLEN_FLAGS(sc->bge_return_ring_cnt, BGE_RCB_FLAG_RING_DISABLED)); RCB_WRITE_4(sc, rcb_addr, bge_nicaddr, 0); bge_writembx(sc, BGE_MBX_RX_CONS0_LO + (i * (sizeof(uint64_t))), 0); rcb_addr += sizeof(struct bge_rcb); } /* Initialize RX ring indexes */ bge_writembx(sc, BGE_MBX_RX_STD_PROD_LO, 0); bge_writembx(sc, BGE_MBX_RX_JUMBO_PROD_LO, 0); bge_writembx(sc, BGE_MBX_RX_MINI_PROD_LO, 0); /* * Set up RX return ring 0 * Note that the NIC address for RX return rings is 0x00000000. * The return rings live entirely within the host, so the * nicaddr field in the RCB isn't used. */ rcb_addr = BGE_MEMWIN_START + BGE_RX_RETURN_RING_RCB; BGE_HOSTADDR(taddr, BGE_RING_DMA_ADDR(sc, bge_rx_return_ring)); RCB_WRITE_4(sc, rcb_addr, bge_hostaddr.bge_addr_hi, taddr.bge_addr_hi); RCB_WRITE_4(sc, rcb_addr, bge_hostaddr.bge_addr_lo, taddr.bge_addr_lo); RCB_WRITE_4(sc, rcb_addr, bge_nicaddr, 0x00000000); RCB_WRITE_4(sc, rcb_addr, bge_maxlen_flags, BGE_RCB_MAXLEN_FLAGS(sc->bge_return_ring_cnt, 0)); /* Set random backoff seed for TX */ CSR_WRITE_4(sc, BGE_TX_RANDOM_BACKOFF, CLLADDR(ifp->if_sadl)[0] + CLLADDR(ifp->if_sadl)[1] + CLLADDR(ifp->if_sadl)[2] + CLLADDR(ifp->if_sadl)[3] + CLLADDR(ifp->if_sadl)[4] + CLLADDR(ifp->if_sadl)[5] + BGE_TX_BACKOFF_SEED_MASK); /* Set inter-packet gap */ CSR_WRITE_4(sc, BGE_TX_LENGTHS, 0x2620); /* * Specify which ring to use for packets that don't match * any RX rules. */ CSR_WRITE_4(sc, BGE_RX_RULES_CFG, 0x08); /* * Configure number of RX lists. One interrupt distribution * list, sixteen active lists, one bad frames class. */ CSR_WRITE_4(sc, BGE_RXLP_CFG, 0x181); /* Inialize RX list placement stats mask. */ CSR_WRITE_4(sc, BGE_RXLP_STATS_ENABLE_MASK, 0x007FFFFF); CSR_WRITE_4(sc, BGE_RXLP_STATS_CTL, 0x1); /* Disable host coalescing until we get it set up */ CSR_WRITE_4(sc, BGE_HCC_MODE, 0x00000000); /* Poll to make sure it's shut down. */ for (i = 0; i < BGE_TIMEOUT * 2; i++) { if (!(CSR_READ_4(sc, BGE_HCC_MODE) & BGE_HCCMODE_ENABLE)) break; DELAY(10); } if (i == BGE_TIMEOUT * 2) { aprint_error_dev(sc->bge_dev, "host coalescing engine failed to idle\n"); return ENXIO; } /* Set up host coalescing defaults */ CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS, sc->bge_rx_coal_ticks); CSR_WRITE_4(sc, BGE_HCC_TX_COAL_TICKS, sc->bge_tx_coal_ticks); CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS, sc->bge_rx_max_coal_bds); CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS, sc->bge_tx_max_coal_bds); if (BGE_IS_5700_FAMILY(sc)) { CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS_INT, 0); CSR_WRITE_4(sc, BGE_HCC_TX_COAL_TICKS_INT, 0); } CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS_INT, 0); CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS_INT, 0); /* Set up address of statistics block */ if (BGE_IS_5700_FAMILY(sc)) { BGE_HOSTADDR(taddr, BGE_RING_DMA_ADDR(sc, bge_info.bge_stats)); CSR_WRITE_4(sc, BGE_HCC_STATS_TICKS, sc->bge_stat_ticks); CSR_WRITE_4(sc, BGE_HCC_STATS_BASEADDR, BGE_STATS_BLOCK); CSR_WRITE_4(sc, BGE_HCC_STATS_ADDR_HI, taddr.bge_addr_hi); CSR_WRITE_4(sc, BGE_HCC_STATS_ADDR_LO, taddr.bge_addr_lo); } /* Set up address of status block */ BGE_HOSTADDR(taddr, BGE_RING_DMA_ADDR(sc, bge_status_block)); CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_BASEADDR, BGE_STATUS_BLOCK); CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_ADDR_HI, taddr.bge_addr_hi); CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_ADDR_LO, taddr.bge_addr_lo); sc->bge_rdata->bge_status_block.bge_idx[0].bge_rx_prod_idx = 0; sc->bge_rdata->bge_status_block.bge_idx[0].bge_tx_cons_idx = 0; /* Turn on host coalescing state machine */ CSR_WRITE_4(sc, BGE_HCC_MODE, BGE_HCCMODE_ENABLE); /* Turn on RX BD completion state machine and enable attentions */ CSR_WRITE_4(sc, BGE_RBDC_MODE, BGE_RBDCMODE_ENABLE | BGE_RBDCMODE_ATTN); /* Turn on RX list placement state machine */ CSR_WRITE_4(sc, BGE_RXLP_MODE, BGE_RXLPMODE_ENABLE); /* Turn on RX list selector state machine. */ if (BGE_IS_5700_FAMILY(sc)) CSR_WRITE_4(sc, BGE_RXLS_MODE, BGE_RXLSMODE_ENABLE); val = BGE_MACMODE_TXDMA_ENB | BGE_MACMODE_RXDMA_ENB | BGE_MACMODE_RX_STATS_CLEAR | BGE_MACMODE_TX_STATS_CLEAR | BGE_MACMODE_RX_STATS_ENB | BGE_MACMODE_TX_STATS_ENB | BGE_MACMODE_FRMHDR_DMA_ENB; if (sc->bge_flags & BGE_PHY_FIBER_TBI) val |= BGE_PORTMODE_TBI; else if (sc->bge_flags & BGE_PHY_FIBER_MII) val |= BGE_PORTMODE_GMII; else val |= BGE_PORTMODE_MII; /* Turn on DMA, clear stats */ CSR_WRITE_4(sc, BGE_MAC_MODE, val); /* Set misc. local control, enable interrupts on attentions */ sc->bge_local_ctrl_reg = BGE_MLC_INTR_ONATTN | BGE_MLC_AUTO_EEPROM; #ifdef notdef /* Assert GPIO pins for PHY reset */ BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_MISCIO_OUT0| BGE_MLC_MISCIO_OUT1|BGE_MLC_MISCIO_OUT2); BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_MISCIO_OUTEN0| BGE_MLC_MISCIO_OUTEN1|BGE_MLC_MISCIO_OUTEN2); #endif #if defined(not_quite_yet) /* Linux driver enables enable gpio pin #1 on 5700s */ if (sc->bge_chipid == BGE_CHIPID_BCM5700) { sc->bge_local_ctrl_reg |= (BGE_MLC_MISCIO_OUT1|BGE_MLC_MISCIO_OUTEN1); } #endif CSR_WRITE_4(sc, BGE_MISC_LOCAL_CTL, sc->bge_local_ctrl_reg); /* Turn on DMA completion state machine */ if (BGE_IS_5700_FAMILY(sc)) CSR_WRITE_4(sc, BGE_DMAC_MODE, BGE_DMACMODE_ENABLE); val = BGE_WDMAMODE_ENABLE | BGE_WDMAMODE_ALL_ATTNS; /* Enable host coalescing bug fix; see Linux tg3.c */ if (BGE_IS_5755_PLUS(sc)) val |= BGE_WDMAMODE_STATUS_TAG_FIX; /* Turn on write DMA state machine */ CSR_WRITE_4(sc, BGE_WDMA_MODE, val); val = BGE_RDMAMODE_ENABLE | BGE_RDMAMODE_ALL_ATTNS; if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5784 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5785 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM57780) val |= BGE_RDMAMODE_BD_SBD_CRPT_ATTN | BGE_RDMAMODE_MBUF_RBD_CRPT_ATTN | BGE_RDMAMODE_MBUF_SBD_CRPT_ATTN; if (sc->bge_flags & BGE_PCIE) val |= BGE_RDMAMODE_FIFO_LONG_BURST; if (sc->bge_flags & BGE_TSO) val |= BGE_RDMAMODE_TSO4_ENABLE; /* Turn on read DMA state machine */ CSR_WRITE_4(sc, BGE_RDMA_MODE, val); delay(40); /* Turn on RX data completion state machine */ CSR_WRITE_4(sc, BGE_RDC_MODE, BGE_RDCMODE_ENABLE); /* Turn on RX BD initiator state machine */ CSR_WRITE_4(sc, BGE_RBDI_MODE, BGE_RBDIMODE_ENABLE); /* Turn on RX data and RX BD initiator state machine */ CSR_WRITE_4(sc, BGE_RDBDI_MODE, BGE_RDBDIMODE_ENABLE); /* Turn on Mbuf cluster free state machine */ if (BGE_IS_5700_FAMILY(sc)) CSR_WRITE_4(sc, BGE_MBCF_MODE, BGE_MBCFMODE_ENABLE); /* Turn on send BD completion state machine */ CSR_WRITE_4(sc, BGE_SBDC_MODE, BGE_SBDCMODE_ENABLE); /* Turn on send data completion state machine */ val = BGE_SDCMODE_ENABLE; if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5761) val |= BGE_SDCMODE_CDELAY; CSR_WRITE_4(sc, BGE_SDC_MODE, val); /* Turn on send data initiator state machine */ if (sc->bge_flags & BGE_TSO) { /* XXX: magic value from Linux driver */ CSR_WRITE_4(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE | 0x08); } else CSR_WRITE_4(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE); /* Turn on send BD initiator state machine */ CSR_WRITE_4(sc, BGE_SBDI_MODE, BGE_SBDIMODE_ENABLE); /* Turn on send BD selector state machine */ CSR_WRITE_4(sc, BGE_SRS_MODE, BGE_SRSMODE_ENABLE); CSR_WRITE_4(sc, BGE_SDI_STATS_ENABLE_MASK, 0x007FFFFF); CSR_WRITE_4(sc, BGE_SDI_STATS_CTL, BGE_SDISTATSCTL_ENABLE | BGE_SDISTATSCTL_FASTER); /* ack/clear link change events */ CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED | BGE_MACSTAT_CFG_CHANGED | BGE_MACSTAT_MI_COMPLETE | BGE_MACSTAT_LINK_CHANGED); CSR_WRITE_4(sc, BGE_MI_STS, 0); /* Enable PHY auto polling (for MII/GMII only) */ if (sc->bge_flags & BGE_PHY_FIBER_TBI) { CSR_WRITE_4(sc, BGE_MI_STS, BGE_MISTS_LINK); } else { BGE_STS_SETBIT(sc, BGE_STS_AUTOPOLL); BGE_SETBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL | (10 << 16)); if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5700) CSR_WRITE_4(sc, BGE_MAC_EVT_ENB, BGE_EVTENB_MI_INTERRUPT); } /* * Clear any pending link state attention. * Otherwise some link state change events may be lost until attention * is cleared by bge_intr() -> bge_link_upd() sequence. * It's not necessary on newer BCM chips - perhaps enabling link * state change attentions implies clearing pending attention. */ CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED | BGE_MACSTAT_CFG_CHANGED | BGE_MACSTAT_MI_COMPLETE | BGE_MACSTAT_LINK_CHANGED); /* Enable link state change attentions. */ BGE_SETBIT(sc, BGE_MAC_EVT_ENB, BGE_EVTENB_LINK_CHANGED); return 0; } static const struct bge_revision * bge_lookup_rev(uint32_t chipid) { const struct bge_revision *br; for (br = bge_revisions; br->br_name != NULL; br++) { if (br->br_chipid == chipid) return br; } for (br = bge_majorrevs; br->br_name != NULL; br++) { if (br->br_chipid == BGE_ASICREV(chipid)) return br; } return NULL; } static const struct bge_product * bge_lookup(const struct pci_attach_args *pa) { const struct bge_product *bp; for (bp = bge_products; bp->bp_name != NULL; bp++) { if (PCI_VENDOR(pa->pa_id) == bp->bp_vendor && PCI_PRODUCT(pa->pa_id) == bp->bp_product) return bp; } return NULL; } static int bge_setpowerstate(struct bge_softc *sc, int powerlevel) { #ifdef NOTYET uint32_t pm_ctl = 0; /* XXX FIXME: make sure indirect accesses enabled? */ pm_ctl = pci_conf_read(sc->bge_dev, BGE_PCI_MISC_CTL, 4); pm_ctl |= BGE_PCIMISCCTL_INDIRECT_ACCESS; pci_write_config(sc->bge_dev, BGE_PCI_MISC_CTL, pm_ctl, 4); /* clear the PME_assert bit and power state bits, enable PME */ pm_ctl = pci_conf_read(sc->bge_dev, BGE_PCI_PWRMGMT_CMD, 2); pm_ctl &= ~PCIM_PSTAT_DMASK; pm_ctl |= (1 << 8); if (powerlevel == 0) { pm_ctl |= PCIM_PSTAT_D0; pci_write_config(sc->bge_dev, BGE_PCI_PWRMGMT_CMD, pm_ctl, 2); DELAY(10000); CSR_WRITE_4(sc, BGE_MISC_LOCAL_CTL, sc->bge_local_ctrl_reg); DELAY(10000); #ifdef NOTYET /* XXX FIXME: write 0x02 to phy aux_Ctrl reg */ bge_miibus_writereg(sc->bge_dev, 1, 0x18, 0x02); #endif DELAY(40); DELAY(40); DELAY(40); DELAY(10000); /* above not quite adequate on 5700 */ return 0; } /* * Entering ACPI power states D1-D3 is achieved by wiggling * GMII gpio pins. Example code assumes all hardware vendors * followed Broadcom's sample pcb layout. Until we verify that * for all supported OEM cards, states D1-D3 are unsupported. */ aprint_error_dev(sc->bge_dev, "power state %d unimplemented; check GPIO pins\n", powerlevel); #endif return EOPNOTSUPP; } /* * Probe for a Broadcom chip. Check the PCI vendor and device IDs * against our list and return its name if we find a match. Note * that since the Broadcom controller contains VPD support, we * can get the device name string from the controller itself instead * of the compiled-in string. This is a little slow, but it guarantees * we'll always announce the right product name. */ static int bge_probe(device_t parent, cfdata_t match, void *aux) { struct pci_attach_args *pa = (struct pci_attach_args *)aux; if (bge_lookup(pa) != NULL) return 1; return 0; } static void bge_attach(device_t parent, device_t self, void *aux) { struct bge_softc *sc = device_private(self); struct pci_attach_args *pa = aux; prop_dictionary_t dict; const struct bge_product *bp; const struct bge_revision *br; pci_chipset_tag_t pc; pci_intr_handle_t ih; const char *intrstr = NULL; bus_dma_segment_t seg; int rseg; uint32_t hwcfg = 0; uint32_t command; struct ifnet *ifp; uint32_t misccfg; void * kva; u_char eaddr[ETHER_ADDR_LEN]; pcireg_t memtype, subid; bus_addr_t memaddr; bus_size_t memsize; uint32_t pm_ctl; bool no_seeprom; bp = bge_lookup(pa); KASSERT(bp != NULL); sc->sc_pc = pa->pa_pc; sc->sc_pcitag = pa->pa_tag; sc->bge_dev = self; pc = sc->sc_pc; subid = pci_conf_read(pc, sc->sc_pcitag, PCI_SUBSYS_ID_REG); aprint_naive(": Ethernet controller\n"); aprint_normal(": %s\n", bp->bp_name); /* * Map control/status registers. */ DPRINTFN(5, ("Map control/status regs\n")); command = pci_conf_read(pc, sc->sc_pcitag, PCI_COMMAND_STATUS_REG); command |= PCI_COMMAND_MEM_ENABLE | PCI_COMMAND_MASTER_ENABLE; pci_conf_write(pc, sc->sc_pcitag, PCI_COMMAND_STATUS_REG, command); command = pci_conf_read(pc, sc->sc_pcitag, PCI_COMMAND_STATUS_REG); if (!(command & PCI_COMMAND_MEM_ENABLE)) { aprint_error_dev(sc->bge_dev, "failed to enable memory mapping!\n"); return; } DPRINTFN(5, ("pci_mem_find\n")); memtype = pci_mapreg_type(sc->sc_pc, sc->sc_pcitag, BGE_PCI_BAR0); switch (memtype) { case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT: case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT: if (pci_mapreg_map(pa, BGE_PCI_BAR0, memtype, 0, &sc->bge_btag, &sc->bge_bhandle, &memaddr, &memsize) == 0) break; default: aprint_error_dev(sc->bge_dev, "can't find mem space\n"); return; } DPRINTFN(5, ("pci_intr_map\n")); if (pci_intr_map(pa, &ih)) { aprint_error_dev(sc->bge_dev, "couldn't map interrupt\n"); return; } DPRINTFN(5, ("pci_intr_string\n")); intrstr = pci_intr_string(pc, ih); DPRINTFN(5, ("pci_intr_establish\n")); sc->bge_intrhand = pci_intr_establish(pc, ih, IPL_NET, bge_intr, sc); if (sc->bge_intrhand == NULL) { aprint_error_dev(sc->bge_dev, "couldn't establish interrupt%s%s\n", intrstr ? " at " : "", intrstr ? intrstr : ""); return; } aprint_normal_dev(sc->bge_dev, "interrupting at %s\n", intrstr); /* * Kludge for 5700 Bx bug: a hardware bug (PCIX byte enable?) * can clobber the chip's PCI config-space power control registers, * leaving the card in D3 powersave state. * We do not have memory-mapped registers in this state, * so force device into D0 state before starting initialization. */ pm_ctl = pci_conf_read(pc, sc->sc_pcitag, BGE_PCI_PWRMGMT_CMD); pm_ctl &= ~(PCI_PWR_D0|PCI_PWR_D1|PCI_PWR_D2|PCI_PWR_D3); pm_ctl |= (1 << 8) | PCI_PWR_D0 ; /* D0 state */ pci_conf_write(pc, sc->sc_pcitag, BGE_PCI_PWRMGMT_CMD, pm_ctl); DELAY(1000); /* 27 usec is allegedly sufficent */ /* * Save ASIC rev. */ sc->bge_chipid = pci_conf_read(pa->pa_pc, pa->pa_tag, BGE_PCI_MISC_CTL) >> BGE_PCIMISCCTL_ASICREV_SHIFT; if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_USE_PRODID_REG) { switch (PCI_PRODUCT(pa->pa_id)) { case PCI_PRODUCT_BROADCOM_BCM5717: case PCI_PRODUCT_BROADCOM_BCM5718: case PCI_PRODUCT_BROADCOM_BCM5724: /* ??? */ sc->bge_chipid = pci_conf_read(pc, pa->pa_tag, BGE_PCI_GEN2_PRODID_ASICREV); break; case PCI_PRODUCT_BROADCOM_BCM57761: case PCI_PRODUCT_BROADCOM_BCM57762: case PCI_PRODUCT_BROADCOM_BCM57765: case PCI_PRODUCT_BROADCOM_BCM57781: case PCI_PRODUCT_BROADCOM_BCM57785: case PCI_PRODUCT_BROADCOM_BCM57791: case PCI_PRODUCT_BROADCOM_BCM57795: sc->bge_chipid = pci_conf_read(pc, pa->pa_tag, BGE_PCI_GEN15_PRODID_ASICREV); break; default: sc->bge_chipid = pci_conf_read(pc, pa->pa_tag, BGE_PCI_PRODID_ASICREV); break; } } if ((pci_get_capability(sc->sc_pc, sc->sc_pcitag, PCI_CAP_PCIEXPRESS, &sc->bge_pciecap, NULL) != 0) || (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5785)) { /* PCIe */ sc->bge_flags |= BGE_PCIE; bge_set_max_readrq(sc); } else if ((pci_conf_read(sc->sc_pc, sc->sc_pcitag, BGE_PCI_PCISTATE) & BGE_PCISTATE_PCI_BUSMODE) == 0) { /* PCI-X */ sc->bge_flags |= BGE_PCIX; if (pci_get_capability(pa->pa_pc, pa->pa_tag, PCI_CAP_PCIX, &sc->bge_pcixcap, NULL) == 0) aprint_error_dev(sc->bge_dev, "unable to find PCIX capability\n"); } /* chipid */ if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5700 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5701 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5703 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5704) sc->bge_flags |= BGE_5700_FAMILY; if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5714_A0 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5780 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5714) sc->bge_flags |= BGE_5714_FAMILY; /* Intentionally exclude BGE_ASICREV_BCM5906 */ if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5717 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5755 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5761 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5784 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5785 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5787 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM57765 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM57766 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM57780) sc->bge_flags |= BGE_5755_PLUS; if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5750 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5752 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5906 || BGE_IS_5755_PLUS(sc) || BGE_IS_5714_FAMILY(sc)) sc->bge_flags |= BGE_5750_PLUS; if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5705 || BGE_IS_5750_OR_BEYOND(sc)) sc->bge_flags |= BGE_5705_PLUS; /* * When using the BCM5701 in PCI-X mode, data corruption has * been observed in the first few bytes of some received packets. * Aligning the packet buffer in memory eliminates the corruption. * Unfortunately, this misaligns the packet payloads. On platforms * which do not support unaligned accesses, we will realign the * payloads by copying the received packets. */ if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5701 && sc->bge_flags & BGE_PCIX) sc->bge_flags |= BGE_RX_ALIGNBUG; if (BGE_IS_5700_FAMILY(sc)) sc->bge_flags |= BGE_JUMBO_CAPABLE; if ((BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5700 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5701) && PCI_VENDOR(subid) == PCI_VENDOR_DELL) sc->bge_flags |= BGE_NO_3LED; misccfg = CSR_READ_4(sc, BGE_MISC_CFG); misccfg &= BGE_MISCCFG_BOARD_ID_MASK; if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5705 && (misccfg == BGE_MISCCFG_BOARD_ID_5788 || misccfg == BGE_MISCCFG_BOARD_ID_5788M)) sc->bge_flags |= BGE_IS_5788; /* * Some controllers seem to require a special firmware to use * TSO. But the firmware is not available to FreeBSD and Linux * claims that the TSO performed by the firmware is slower than * hardware based TSO. Moreover the firmware based TSO has one * known bug which can't handle TSO if ethernet header + IP/TCP * header is greater than 80 bytes. The workaround for the TSO * bug exist but it seems it's too expensive than not using * TSO at all. Some hardwares also have the TSO bug so limit * the TSO to the controllers that are not affected TSO issues * (e.g. 5755 or higher). */ if (BGE_IS_5755_PLUS(sc)) { /* * BCM5754 and BCM5787 shares the same ASIC id so * explicit device id check is required. */ if ((PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_BROADCOM_BCM5754) && (PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_BROADCOM_BCM5754M)) sc->bge_flags |= BGE_TSO; } if ((BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5703 && (misccfg == 0x4000 || misccfg == 0x8000)) || (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5705 && PCI_VENDOR(pa->pa_id) == PCI_VENDOR_BROADCOM && (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROADCOM_BCM5901 || PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROADCOM_BCM5901A2 || PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROADCOM_BCM5705F)) || (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_BROADCOM && (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROADCOM_BCM5751F || PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROADCOM_BCM5753F || PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROADCOM_BCM5787F)) || PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROADCOM_BCM57790 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5906) sc->bge_flags |= BGE_10_100_ONLY; if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5700 || (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5705 && (sc->bge_chipid != BGE_CHIPID_BCM5705_A0 && sc->bge_chipid != BGE_CHIPID_BCM5705_A1)) || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5906) sc->bge_flags |= BGE_NO_ETH_WIRE_SPEED; if (sc->bge_chipid == BGE_CHIPID_BCM5701_A0 || sc->bge_chipid == BGE_CHIPID_BCM5701_B0) sc->bge_flags |= BGE_PHY_CRC_BUG; if (BGE_CHIPREV(sc->bge_chipid) == BGE_CHIPREV_5703_AX || BGE_CHIPREV(sc->bge_chipid) == BGE_CHIPREV_5704_AX) sc->bge_flags |= BGE_PHY_ADC_BUG; if (sc->bge_chipid == BGE_CHIPID_BCM5704_A0) sc->bge_flags |= BGE_PHY_5704_A0_BUG; if (BGE_IS_5705_PLUS(sc) && BGE_ASICREV(sc->bge_chipid) != BGE_ASICREV_BCM5906 && BGE_ASICREV(sc->bge_chipid) != BGE_ASICREV_BCM5717 && BGE_ASICREV(sc->bge_chipid) != BGE_ASICREV_BCM5785 && BGE_ASICREV(sc->bge_chipid) != BGE_ASICREV_BCM57765 && BGE_ASICREV(sc->bge_chipid) != BGE_ASICREV_BCM57766 && BGE_ASICREV(sc->bge_chipid) != BGE_ASICREV_BCM57780) { if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5755 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5761 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5784 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5787) { if (PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_BROADCOM_BCM5722 && PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_BROADCOM_BCM5756) sc->bge_flags |= BGE_PHY_JITTER_BUG; if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROADCOM_BCM5755M) sc->bge_flags |= BGE_PHY_ADJUST_TRIM; } else if (BGE_ASICREV(sc->bge_chipid) != BGE_ASICREV_BCM5906) sc->bge_flags |= BGE_PHY_BER_BUG; } /* * SEEPROM check. * First check if firmware knows we do not have SEEPROM. */ if (prop_dictionary_get_bool(device_properties(self), "without-seeprom", &no_seeprom) && no_seeprom) sc->bge_flags |= BGE_NO_EEPROM; /* Now check the 'ROM failed' bit on the RX CPU */ else if (CSR_READ_4(sc, BGE_RXCPU_MODE) & BGE_RXCPUMODE_ROMFAIL) sc->bge_flags |= BGE_NO_EEPROM; /* Try to reset the chip. */ DPRINTFN(5, ("bge_reset\n")); bge_reset(sc); sc->bge_asf_mode = 0; if (bge_allow_asf && (bge_readmem_ind(sc, BGE_SOFTWARE_GENCOMM_SIG) == BGE_MAGIC_NUMBER)) { if (bge_readmem_ind(sc, BGE_SOFTWARE_GENCOMM_NICCFG) & BGE_HWCFG_ASF) { sc->bge_asf_mode |= ASF_ENABLE; sc->bge_asf_mode |= ASF_STACKUP; if (BGE_IS_5750_OR_BEYOND(sc)) { sc->bge_asf_mode |= ASF_NEW_HANDSHAKE; } } } /* Try to reset the chip again the nice way. */ bge_stop_fw(sc); bge_sig_pre_reset(sc, BGE_RESET_STOP); if (bge_reset(sc)) aprint_error_dev(sc->bge_dev, "chip reset failed\n"); bge_sig_legacy(sc, BGE_RESET_STOP); bge_sig_post_reset(sc, BGE_RESET_STOP); if (bge_chipinit(sc)) { aprint_error_dev(sc->bge_dev, "chip initialization failed\n"); bge_release_resources(sc); return; } /* * Get station address from the EEPROM. */ if (bge_get_eaddr(sc, eaddr)) { aprint_error_dev(sc->bge_dev, "failed to read station address\n"); bge_release_resources(sc); return; } br = bge_lookup_rev(sc->bge_chipid); if (br == NULL) { aprint_normal_dev(sc->bge_dev, "unknown ASIC (0x%x)", sc->bge_chipid); } else { aprint_normal_dev(sc->bge_dev, "ASIC %s (0x%x)", br->br_name, sc->bge_chipid); } aprint_normal(", Ethernet address %s\n", ether_sprintf(eaddr)); /* Allocate the general information block and ring buffers. */ if (pci_dma64_available(pa)) sc->bge_dmatag = pa->pa_dmat64; else sc->bge_dmatag = pa->pa_dmat; DPRINTFN(5, ("bus_dmamem_alloc\n")); if (bus_dmamem_alloc(sc->bge_dmatag, sizeof(struct bge_ring_data), PAGE_SIZE, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) { aprint_error_dev(sc->bge_dev, "can't alloc rx buffers\n"); return; } DPRINTFN(5, ("bus_dmamem_map\n")); if (bus_dmamem_map(sc->bge_dmatag, &seg, rseg, sizeof(struct bge_ring_data), &kva, BUS_DMA_NOWAIT)) { aprint_error_dev(sc->bge_dev, "can't map DMA buffers (%zu bytes)\n", sizeof(struct bge_ring_data)); bus_dmamem_free(sc->bge_dmatag, &seg, rseg); return; } DPRINTFN(5, ("bus_dmamem_create\n")); if (bus_dmamap_create(sc->bge_dmatag, sizeof(struct bge_ring_data), 1, sizeof(struct bge_ring_data), 0, BUS_DMA_NOWAIT, &sc->bge_ring_map)) { aprint_error_dev(sc->bge_dev, "can't create DMA map\n"); bus_dmamem_unmap(sc->bge_dmatag, kva, sizeof(struct bge_ring_data)); bus_dmamem_free(sc->bge_dmatag, &seg, rseg); return; } DPRINTFN(5, ("bus_dmamem_load\n")); if (bus_dmamap_load(sc->bge_dmatag, sc->bge_ring_map, kva, sizeof(struct bge_ring_data), NULL, BUS_DMA_NOWAIT)) { bus_dmamap_destroy(sc->bge_dmatag, sc->bge_ring_map); bus_dmamem_unmap(sc->bge_dmatag, kva, sizeof(struct bge_ring_data)); bus_dmamem_free(sc->bge_dmatag, &seg, rseg); return; } DPRINTFN(5, ("bzero\n")); sc->bge_rdata = (struct bge_ring_data *)kva; memset(sc->bge_rdata, 0, sizeof(struct bge_ring_data)); /* Try to allocate memory for jumbo buffers. */ if (BGE_IS_JUMBO_CAPABLE(sc)) { if (bge_alloc_jumbo_mem(sc)) { aprint_error_dev(sc->bge_dev, "jumbo buffer allocation failed\n"); } else sc->ethercom.ec_capabilities |= ETHERCAP_JUMBO_MTU; } /* Set default tuneable values. */ sc->bge_stat_ticks = BGE_TICKS_PER_SEC; sc->bge_rx_coal_ticks = 150; sc->bge_rx_max_coal_bds = 64; #ifdef ORIG_WPAUL_VALUES sc->bge_tx_coal_ticks = 150; sc->bge_tx_max_coal_bds = 128; #else sc->bge_tx_coal_ticks = 300; sc->bge_tx_max_coal_bds = 400; #endif if (BGE_IS_5705_PLUS(sc)) { sc->bge_tx_coal_ticks = (12 * 5); sc->bge_tx_max_coal_bds = (12 * 5); aprint_verbose_dev(sc->bge_dev, "setting short Tx thresholds\n"); } if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5717 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM57765 || BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM57766) sc->bge_return_ring_cnt = BGE_RETURN_RING_CNT; else if (BGE_IS_5705_PLUS(sc)) sc->bge_return_ring_cnt = BGE_RETURN_RING_CNT_5705; else sc->bge_return_ring_cnt = BGE_RETURN_RING_CNT; /* Set up ifnet structure */ ifp = &sc->ethercom.ec_if; ifp->if_softc = sc; ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; ifp->if_ioctl = bge_ioctl; ifp->if_stop = bge_stop; ifp->if_start = bge_start; ifp->if_init = bge_init; ifp->if_watchdog = bge_watchdog; IFQ_SET_MAXLEN(&ifp->if_snd, max(BGE_TX_RING_CNT - 1, IFQ_MAXLEN)); IFQ_SET_READY(&ifp->if_snd); DPRINTFN(5, ("strcpy if_xname\n")); strcpy(ifp->if_xname, device_xname(sc->bge_dev)); if (sc->bge_chipid != BGE_CHIPID_BCM5700_B0) sc->ethercom.ec_if.if_capabilities |= IFCAP_CSUM_IPv4_Tx | IFCAP_CSUM_IPv4_Rx; #if 1 /* XXX TCP/UDP checksum offload breaks with pf(4) */ sc->ethercom.ec_if.if_capabilities |= IFCAP_CSUM_TCPv4_Tx | IFCAP_CSUM_TCPv4_Rx | IFCAP_CSUM_UDPv4_Tx | IFCAP_CSUM_UDPv4_Rx; #endif sc->ethercom.ec_capabilities |= ETHERCAP_VLAN_HWTAGGING | ETHERCAP_VLAN_MTU; if (sc->bge_flags & BGE_TSO) sc->ethercom.ec_if.if_capabilities |= IFCAP_TSOv4; /* * Do MII setup. */ DPRINTFN(5, ("mii setup\n")); sc->bge_mii.mii_ifp = ifp; sc->bge_mii.mii_readreg = bge_miibus_readreg; sc->bge_mii.mii_writereg = bge_miibus_writereg; sc->bge_mii.mii_statchg = bge_miibus_statchg; /* * Figure out what sort of media we have by checking the hardware * config word in the first 32k of NIC internal memory, or fall back to * the config word in the EEPROM. Note: on some BCM5700 cards, * this value appears to be unset. If that's the case, we have to rely * on identifying the NIC by its PCI subsystem ID, as we do below for * the SysKonnect SK-9D41. */ if (bge_readmem_ind(sc, BGE_SOFTWARE_GENCOMM_SIG) == BGE_MAGIC_NUMBER) { hwcfg = bge_readmem_ind(sc, BGE_SOFTWARE_GENCOMM_NICCFG); } else if (!(sc->bge_flags & BGE_NO_EEPROM)) { bge_read_eeprom(sc, (void *)&hwcfg, BGE_EE_HWCFG_OFFSET, sizeof(hwcfg)); hwcfg = be32toh(hwcfg); } /* The SysKonnect SK-9D41 is a 1000baseSX card. */ if (PCI_PRODUCT(pa->pa_id) == SK_SUBSYSID_9D41 || (hwcfg & BGE_HWCFG_MEDIA) == BGE_MEDIA_FIBER) { if (BGE_IS_5714_FAMILY(sc)) sc->bge_flags |= BGE_PHY_FIBER_MII; else sc->bge_flags |= BGE_PHY_FIBER_TBI; } /* set phyflags and chipid before mii_attach() */ dict = device_properties(self); prop_dictionary_set_uint32(dict, "phyflags", sc->bge_flags); prop_dictionary_set_uint32(dict, "chipid", sc->bge_chipid); if (sc->bge_flags & BGE_PHY_FIBER_TBI) { ifmedia_init(&sc->bge_ifmedia, IFM_IMASK, bge_ifmedia_upd, bge_ifmedia_sts); ifmedia_add(&sc->bge_ifmedia, IFM_ETHER |IFM_1000_SX, 0, NULL); ifmedia_add(&sc->bge_ifmedia, IFM_ETHER | IFM_1000_SX|IFM_FDX, 0, NULL); ifmedia_add(&sc->bge_ifmedia, IFM_ETHER | IFM_AUTO, 0, NULL); ifmedia_set(&sc->bge_ifmedia, IFM_ETHER | IFM_AUTO); /* Pretend the user requested this setting */ sc->bge_ifmedia.ifm_media = sc->bge_ifmedia.ifm_cur->ifm_media; } else { /* * Do transceiver setup and tell the firmware the * driver is down so we can try to get access the * probe if ASF is running. Retry a couple of times * if we get a conflict with the ASF firmware accessing * the PHY. */ BGE_CLRBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP); bge_asf_driver_up(sc); ifmedia_init(&sc->bge_mii.mii_media, 0, bge_ifmedia_upd, bge_ifmedia_sts); mii_attach(sc->bge_dev, &sc->bge_mii, 0xffffffff, MII_PHY_ANY, MII_OFFSET_ANY, MIIF_FORCEANEG|MIIF_DOPAUSE); if (LIST_EMPTY(&sc->bge_mii.mii_phys)) { aprint_error_dev(sc->bge_dev, "no PHY found!\n"); ifmedia_add(&sc->bge_mii.mii_media, IFM_ETHER|IFM_MANUAL, 0, NULL); ifmedia_set(&sc->bge_mii.mii_media, IFM_ETHER|IFM_MANUAL); } else ifmedia_set(&sc->bge_mii.mii_media, IFM_ETHER|IFM_AUTO); /* * Now tell the firmware we are going up after probing the PHY */ if (sc->bge_asf_mode & ASF_STACKUP) BGE_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP); } /* * Call MI attach routine. */ DPRINTFN(5, ("if_attach\n")); if_attach(ifp); DPRINTFN(5, ("ether_ifattach\n")); ether_ifattach(ifp, eaddr); ether_set_ifflags_cb(&sc->ethercom, bge_ifflags_cb); rnd_attach_source(&sc->rnd_source, device_xname(sc->bge_dev), RND_TYPE_NET, 0); #ifdef BGE_EVENT_COUNTERS /* * Attach event counters. */ evcnt_attach_dynamic(&sc->bge_ev_intr, EVCNT_TYPE_INTR, NULL, device_xname(sc->bge_dev), "intr"); evcnt_attach_dynamic(&sc->bge_ev_tx_xoff, EVCNT_TYPE_MISC, NULL, device_xname(sc->bge_dev), "tx_xoff"); evcnt_attach_dynamic(&sc->bge_ev_tx_xon, EVCNT_TYPE_MISC, NULL, device_xname(sc->bge_dev), "tx_xon"); evcnt_attach_dynamic(&sc->bge_ev_rx_xoff, EVCNT_TYPE_MISC, NULL, device_xname(sc->bge_dev), "rx_xoff"); evcnt_attach_dynamic(&sc->bge_ev_rx_xon, EVCNT_TYPE_MISC, NULL, device_xname(sc->bge_dev), "rx_xon"); evcnt_attach_dynamic(&sc->bge_ev_rx_macctl, EVCNT_TYPE_MISC, NULL, device_xname(sc->bge_dev), "rx_macctl"); evcnt_attach_dynamic(&sc->bge_ev_xoffentered, EVCNT_TYPE_MISC, NULL, device_xname(sc->bge_dev), "xoffentered"); #endif /* BGE_EVENT_COUNTERS */ DPRINTFN(5, ("callout_init\n")); callout_init(&sc->bge_timeout, 0); if (pmf_device_register(self, NULL, NULL)) pmf_class_network_register(self, ifp); else aprint_error_dev(self, "couldn't establish power handler\n"); sysctl_bge_init(sc); #ifdef BGE_DEBUG bge_debug_info(sc); #endif } static void bge_release_resources(struct bge_softc *sc) { if (sc->bge_vpd_prodname != NULL) free(sc->bge_vpd_prodname, M_DEVBUF); if (sc->bge_vpd_readonly != NULL) free(sc->bge_vpd_readonly, M_DEVBUF); } static int bge_reset(struct bge_softc *sc) { uint32_t cachesize, command, pcistate, marbmode; #if 0 uint32_t new_pcistate; #endif pcireg_t devctl, reg; int i, val; void (*write_op)(struct bge_softc *, int, int); if (BGE_IS_5750_OR_BEYOND(sc) && !BGE_IS_5714_FAMILY(sc) && (BGE_ASICREV(sc->bge_chipid) != BGE_ASICREV_BCM5906)) { if (sc->bge_flags & BGE_PCIE) write_op = bge_writemem_direct; else write_op = bge_writemem_ind; } else write_op = bge_writereg_ind; /* Save some important PCI state. */ cachesize = pci_conf_read(sc->sc_pc, sc->sc_pcitag, BGE_PCI_CACHESZ); command = pci_conf_read(sc->sc_pc, sc->sc_pcitag, BGE_PCI_CMD); pcistate = pci_conf_read(sc->sc_pc, sc->sc_pcitag, BGE_PCI_PCISTATE); /* Step 5a: Enable memory arbiter. */ marbmode = 0; if (BGE_IS_5714_FAMILY(sc)) marbmode = CSR_READ_4(sc, BGE_MARB_MODE); CSR_WRITE_4(sc, BGE_MARB_MODE, BGE_MARBMODE_ENABLE | marbmode); /* Step 5b-5d: */ pci_conf_write(sc->sc_pc, sc->sc_pcitag, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_INDIRECT_ACCESS | BGE_PCIMISCCTL_MASK_PCI_INTR | BGE_HIF_SWAP_OPTIONS | BGE_PCIMISCCTL_PCISTATE_RW); /* XXX ???: Disable fastboot on controllers that support it. */ if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5752 || BGE_IS_5755_PLUS(sc)) CSR_WRITE_4(sc, BGE_FASTBOOT_PC, 0); /* * Step 6: Write the magic number to SRAM at offset 0xB50. * When firmware finishes its initialization it will * write ~BGE_MAGIC_NUMBER to the same location. */ bge_writemem_ind(sc, BGE_SOFTWARE_GENCOMM, BGE_MAGIC_NUMBER); /* Step 7: */ val = BGE_MISCCFG_RESET_CORE_CLOCKS | (65<<1); /* * XXX: from FreeBSD/Linux; no documentation */ if (sc->bge_flags & BGE_PCIE) { if (CSR_READ_4(sc, BGE_PCIE_CTL1) == 0x60) /* PCI Express 1.0 system */ CSR_WRITE_4(sc, BGE_PCIE_CTL1, 0x20); if (sc->bge_chipid != BGE_CHIPID_BCM5750_A0) { /* * Prevent PCI Express link training * during global reset. */ CSR_WRITE_4(sc, BGE_MISC_CFG, 1 << 29); val |= (1<<29); } } if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5906) { i = CSR_READ_4(sc, BGE_VCPU_STATUS); CSR_WRITE_4(sc, BGE_VCPU_STATUS, i | BGE_VCPU_STATUS_DRV_RESET); i = CSR_READ_4(sc, BGE_VCPU_EXT_CTRL); CSR_WRITE_4(sc, BGE_VCPU_EXT_CTRL, i & ~BGE_VCPU_EXT_CTRL_HALT_CPU); } /* * Set GPHY Power Down Override to leave GPHY * powered up in D0 uninitialized. */ if (BGE_IS_5705_PLUS(sc)) val |= BGE_MISCCFG_KEEP_GPHY_POWER; /* XXX 5721, 5751 and 5752 */ if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5750) val |= BGE_MISCCFG_GRC_RESET_DISABLE; /* Issue global reset */ write_op(sc, BGE_MISC_CFG, val); /* Step 8: wait for complete */ if (sc->bge_flags & BGE_PCIE) delay(100*1000); /* too big */ else delay(100); /* From Linux: dummy read to flush PCI posted writes */ reg = pci_conf_read(sc->sc_pc, sc->sc_pcitag, BGE_PCI_CMD); /* Step 9-10: Reset some of the PCI state that got zapped by reset */ pci_conf_write(sc->sc_pc, sc->sc_pcitag, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_INDIRECT_ACCESS | BGE_PCIMISCCTL_MASK_PCI_INTR | BGE_HIF_SWAP_OPTIONS | BGE_PCIMISCCTL_PCISTATE_RW | BGE_PCIMISCCTL_CLOCKCTL_RW); pci_conf_write(sc->sc_pc, sc->sc_pcitag, BGE_PCI_CMD, command); write_op(sc, BGE_MISC_CFG, (65 << 1)); /* Step 11: disable PCI-X Relaxed Ordering. */ if (sc->bge_flags & BGE_PCIX) { reg = pci_conf_read(sc->sc_pc, sc->sc_pcitag, sc->bge_pcixcap + PCI_PCIX_CMD); pci_conf_write(sc->sc_pc, sc->sc_pcitag, sc->bge_pcixcap + PCI_PCIX_CMD, reg & ~PCI_PCIX_CMD_RELAXED_ORDER); } if (sc->bge_flags & BGE_PCIE) { if (sc->bge_chipid == BGE_CHIPID_BCM5750_A0) { DELAY(500000); /* XXX: Magic Numbers */ reg = pci_conf_read(sc->sc_pc, sc->sc_pcitag, BGE_PCI_UNKNOWN0); pci_conf_write(sc->sc_pc, sc->sc_pcitag, BGE_PCI_UNKNOWN0, reg | (1 << 15)); } devctl = pci_conf_read(sc->sc_pc, sc->sc_pcitag, sc->bge_pciecap + PCI_PCIE_DCSR); /* Clear enable no snoop and disable relaxed ordering. */ devctl &= ~(0x0010 | PCI_PCIE_DCSR_ENA_NO_SNOOP); /* Set PCIE max payload size to 128. */ devctl &= ~(0x00e0); /* Clear device status register. Write 1b to clear */ devctl |= PCI_PCIE_DCSR_URD | PCI_PCIE_DCSR_FED | PCI_PCIE_DCSR_NFED | PCI_PCIE_DCSR_CED; pci_conf_write(sc->sc_pc, sc->sc_pcitag, sc->bge_pciecap + PCI_PCIE_DCSR, devctl); } /* Step 12: Enable memory arbiter. */ marbmode = 0; if (BGE_IS_5714_FAMILY(sc)) marbmode = CSR_READ_4(sc, BGE_MARB_MODE); CSR_WRITE_4(sc, BGE_MARB_MODE, BGE_MARBMODE_ENABLE | marbmode); /* Step 17: Poll until the firmware initialization is complete */ bge_poll_fw(sc); /* XXX 5721, 5751 and 5752 */ if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5750) { /* Step 19: */ BGE_SETBIT(sc, BGE_TLP_CONTROL_REG, 1 << 29 | 1 << 25); /* Step 20: */ BGE_SETBIT(sc, BGE_TLP_CONTROL_REG, BGE_TLP_DATA_FIFO_PROTECT); } /* * Step 18: wirte mac mode * XXX Write 0x0c for 5703S and 5704S */ CSR_WRITE_4(sc, BGE_MAC_MODE, 0); /* Step 21: 5822 B0 errata */ if (BGE_CHIPREV(sc->bge_chipid) == BGE_CHIPREV_5704_BX) { pcireg_t msidata; msidata = pci_conf_read(sc->sc_pc, sc->sc_pcitag, BGE_PCI_MSI_DATA); msidata |= ((1 << 13 | 1 << 12 | 1 << 10) << 16); pci_conf_write(sc->sc_pc, sc->sc_pcitag, BGE_PCI_MSI_DATA, msidata); } /* Step 23: restore cache line size */ pci_conf_write(sc->sc_pc, sc->sc_pcitag, BGE_PCI_CACHESZ, cachesize); #if 0 /* * XXX Wait for the value of the PCISTATE register to * return to its original pre-reset state. This is a * fairly good indicator of reset completion. If we don't * wait for the reset to fully complete, trying to read * from the device's non-PCI registers may yield garbage * results. */ for (i = 0; i < BGE_TIMEOUT; i++) { new_pcistate = pci_conf_read(sc->sc_pc, sc->sc_pcitag, BGE_PCI_PCISTATE); if ((new_pcistate & ~BGE_PCISTATE_RESERVED) == (pcistate & ~BGE_PCISTATE_RESERVED)) break; DELAY(10); } if ((new_pcistate & ~BGE_PCISTATE_RESERVED) != (pcistate & ~BGE_PCISTATE_RESERVED)) { aprint_error_dev(sc->bge_dev, "pcistate failed to revert\n"); } #endif /* Step 28: Fix up byte swapping */ CSR_WRITE_4(sc, BGE_MODE_CTL, BGE_DMA_SWAP_OPTIONS); /* Tell the ASF firmware we are up */ if (sc->bge_asf_mode & ASF_STACKUP) BGE_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP); /* * The 5704 in TBI mode apparently needs some special * adjustment to insure the SERDES drive level is set * to 1.2V. */ if (sc->bge_flags & BGE_PHY_FIBER_TBI && BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5704) { uint32_t serdescfg; serdescfg = CSR_READ_4(sc, BGE_SERDES_CFG); serdescfg = (serdescfg & ~0xFFF) | 0x880; CSR_WRITE_4(sc, BGE_SERDES_CFG, serdescfg); } if (sc->bge_flags & BGE_PCIE && sc->bge_chipid != BGE_CHIPID_BCM5750_A0 && BGE_ASICREV(sc->bge_chipid) != BGE_ASICREV_BCM5717 && BGE_ASICREV(sc->bge_chipid) != BGE_ASICREV_BCM5785 && BGE_ASICREV(sc->bge_chipid) != BGE_ASICREV_BCM57765 && BGE_ASICREV(sc->bge_chipid) != BGE_ASICREV_BCM57766) { uint32_t v; /* Enable PCI Express bug fix */ v = CSR_READ_4(sc, 0x7c00); CSR_WRITE_4(sc, 0x7c00, v | (1<<25)); } DELAY(10000); return 0; } /* * Frame reception handling. This is called if there's a frame * on the receive return list. * * Note: we have to be able to handle two possibilities here: * 1) the frame is from the jumbo receive ring * 2) the frame is from the standard receive ring */ static void bge_rxeof(struct bge_softc *sc) { struct ifnet *ifp; uint16_t rx_prod, rx_cons; int stdcnt = 0, jumbocnt = 0; bus_dmamap_t dmamap; bus_addr_t offset, toff; bus_size_t tlen; int tosync; rx_cons = sc->bge_rx_saved_considx; rx_prod = sc->bge_rdata->bge_status_block.bge_idx[0].bge_rx_prod_idx; /* Nothing to do */ if (rx_cons == rx_prod) return; ifp = &sc->ethercom.ec_if; bus_dmamap_sync(sc->bge_dmatag, sc->bge_ring_map, offsetof(struct bge_ring_data, bge_status_block), sizeof (struct bge_status_block), BUS_DMASYNC_POSTREAD); offset = offsetof(struct bge_ring_data, bge_rx_return_ring); tosync = rx_prod - rx_cons; if (tosync != 0) rnd_add_uint32(&sc->rnd_source, tosync); toff = offset + (rx_cons * sizeof (struct bge_rx_bd)); if (tosync < 0) { tlen = (sc->bge_return_ring_cnt - rx_cons) * sizeof (struct bge_rx_bd); bus_dmamap_sync(sc->bge_dmatag, sc->bge_ring_map, toff, tlen, BUS_DMASYNC_POSTREAD); tosync = -tosync; } bus_dmamap_sync(sc->bge_dmatag, sc->bge_ring_map, offset, tosync * sizeof (struct bge_rx_bd), BUS_DMASYNC_POSTREAD); while (rx_cons != rx_prod) { struct bge_rx_bd *cur_rx; uint32_t rxidx; struct mbuf *m = NULL; cur_rx = &sc->bge_rdata->bge_rx_return_ring[rx_cons]; rxidx = cur_rx->bge_idx; BGE_INC(rx_cons, sc->bge_return_ring_cnt); if (cur_rx->bge_flags & BGE_RXBDFLAG_JUMBO_RING) { BGE_INC(sc->bge_jumbo, BGE_JUMBO_RX_RING_CNT); m = sc->bge_cdata.bge_rx_jumbo_chain[rxidx]; sc->bge_cdata.bge_rx_jumbo_chain[rxidx] = NULL; jumbocnt++; bus_dmamap_sync(sc->bge_dmatag, sc->bge_cdata.bge_rx_jumbo_map, mtod(m, char *) - (char *)sc->bge_cdata.bge_jumbo_buf, BGE_JLEN, BUS_DMASYNC_POSTREAD); if (cur_rx->bge_flags & BGE_RXBDFLAG_ERROR) { ifp->if_ierrors++; bge_newbuf_jumbo(sc, sc->bge_jumbo, m); continue; } if (bge_newbuf_jumbo(sc, sc->bge_jumbo, NULL)== ENOBUFS) { ifp->if_ierrors++; bge_newbuf_jumbo(sc, sc->bge_jumbo, m); continue; } } else { BGE_INC(sc->bge_std, BGE_STD_RX_RING_CNT); m = sc->bge_cdata.bge_rx_std_chain[rxidx]; sc->bge_cdata.bge_rx_std_chain[rxidx] = NULL; stdcnt++; dmamap = sc->bge_cdata.bge_rx_std_map[rxidx]; sc->bge_cdata.bge_rx_std_map[rxidx] = 0; if (dmamap == NULL) { ifp->if_ierrors++; bge_newbuf_std(sc, sc->bge_std, m, dmamap); continue; } bus_dmamap_sync(sc->bge_dmatag, dmamap, 0, dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); bus_dmamap_unload(sc->bge_dmatag, dmamap); if (cur_rx->bge_flags & BGE_RXBDFLAG_ERROR) { ifp->if_ierrors++; bge_newbuf_std(sc, sc->bge_std, m, dmamap); continue; } if (bge_newbuf_std(sc, sc->bge_std, NULL, dmamap) == ENOBUFS) { ifp->if_ierrors++; bge_newbuf_std(sc, sc->bge_std, m, dmamap); continue; } } ifp->if_ipackets++; #ifndef __NO_STRICT_ALIGNMENT /* * XXX: if the 5701 PCIX-Rx-DMA workaround is in effect, * the Rx buffer has the layer-2 header unaligned. * If our CPU requires alignment, re-align by copying. */ if (sc->bge_flags & BGE_RX_ALIGNBUG) { memmove(mtod(m, char *) + ETHER_ALIGN, m->m_data, cur_rx->bge_len); m->m_data += ETHER_ALIGN; } #endif m->m_pkthdr.len = m->m_len = cur_rx->bge_len - ETHER_CRC_LEN; m->m_pkthdr.rcvif = ifp; /* * Handle BPF listeners. Let the BPF user see the packet. */ bpf_mtap(ifp, m); m->m_pkthdr.csum_flags = M_CSUM_IPv4; if ((cur_rx->bge_ip_csum ^ 0xffff) != 0) m->m_pkthdr.csum_flags |= M_CSUM_IPv4_BAD; /* * Rx transport checksum-offload may also * have bugs with packets which, when transmitted, * were `runts' requiring padding. */ if (cur_rx->bge_flags & BGE_RXBDFLAG_TCP_UDP_CSUM && (/* (sc->_bge_quirks & BGE_QUIRK_SHORT_CKSUM_BUG) == 0 ||*/ m->m_pkthdr.len >= ETHER_MIN_NOPAD)) { m->m_pkthdr.csum_data = cur_rx->bge_tcp_udp_csum; m->m_pkthdr.csum_flags |= (M_CSUM_TCPv4|M_CSUM_UDPv4| M_CSUM_DATA); } /* * If we received a packet with a vlan tag, pass it * to vlan_input() instead of ether_input(). */ if (cur_rx->bge_flags & BGE_RXBDFLAG_VLAN_TAG) { VLAN_INPUT_TAG(ifp, m, cur_rx->bge_vlan_tag, continue); } (*ifp->if_input)(ifp, m); } sc->bge_rx_saved_considx = rx_cons; bge_writembx(sc, BGE_MBX_RX_CONS0_LO, sc->bge_rx_saved_considx); if (stdcnt) bge_writembx(sc, BGE_MBX_RX_STD_PROD_LO, sc->bge_std); if (jumbocnt) bge_writembx(sc, BGE_MBX_RX_JUMBO_PROD_LO, sc->bge_jumbo); } static void bge_txeof(struct bge_softc *sc) { struct bge_tx_bd *cur_tx = NULL; struct ifnet *ifp; struct txdmamap_pool_entry *dma; bus_addr_t offset, toff; bus_size_t tlen; int tosync; struct mbuf *m; ifp = &sc->ethercom.ec_if; bus_dmamap_sync(sc->bge_dmatag, sc->bge_ring_map, offsetof(struct bge_ring_data, bge_status_block), sizeof (struct bge_status_block), BUS_DMASYNC_POSTREAD); offset = offsetof(struct bge_ring_data, bge_tx_ring); tosync = sc->bge_rdata->bge_status_block.bge_idx[0].bge_tx_cons_idx - sc->bge_tx_saved_considx; if (tosync != 0) rnd_add_uint32(&sc->rnd_source, tosync); toff = offset + (sc->bge_tx_saved_considx * sizeof (struct bge_tx_bd)); if (tosync < 0) { tlen = (BGE_TX_RING_CNT - sc->bge_tx_saved_considx) * sizeof (struct bge_tx_bd); bus_dmamap_sync(sc->bge_dmatag, sc->bge_ring_map, toff, tlen, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); tosync = -tosync; } bus_dmamap_sync(sc->bge_dmatag, sc->bge_ring_map, offset, tosync * sizeof (struct bge_tx_bd), BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); /* * Go through our tx ring and free mbufs for those * frames that have been sent. */ while (sc->bge_tx_saved_considx != sc->bge_rdata->bge_status_block.bge_idx[0].bge_tx_cons_idx) { uint32_t idx = 0; idx = sc->bge_tx_saved_considx; cur_tx = &sc->bge_rdata->bge_tx_ring[idx]; if (cur_tx->bge_flags & BGE_TXBDFLAG_END) ifp->if_opackets++; m = sc->bge_cdata.bge_tx_chain[idx]; if (m != NULL) { sc->bge_cdata.bge_tx_chain[idx] = NULL; dma = sc->txdma[idx]; bus_dmamap_sync(sc->bge_dmatag, dma->dmamap, 0, dma->dmamap->dm_mapsize, BUS_DMASYNC_POSTWRITE); bus_dmamap_unload(sc->bge_dmatag, dma->dmamap); SLIST_INSERT_HEAD(&sc->txdma_list, dma, link); sc->txdma[idx] = NULL; m_freem(m); } sc->bge_txcnt--; BGE_INC(sc->bge_tx_saved_considx, BGE_TX_RING_CNT); ifp->if_timer = 0; } if (cur_tx != NULL) ifp->if_flags &= ~IFF_OACTIVE; } static int bge_intr(void *xsc) { struct bge_softc *sc; struct ifnet *ifp; uint32_t statusword; sc = xsc; ifp = &sc->ethercom.ec_if; /* It is possible for the interrupt to arrive before * the status block is updated prior to the interrupt. * Reading the PCI State register will confirm whether the * interrupt is ours and will flush the status block. */ /* read status word from status block */ statusword = sc->bge_rdata->bge_status_block.bge_status; if ((statusword & BGE_STATFLAG_UPDATED) || (!(CSR_READ_4(sc, BGE_PCI_PCISTATE) & BGE_PCISTATE_INTR_NOT_ACTIVE))) { /* Ack interrupt and stop others from occuring. */ bge_writembx(sc, BGE_MBX_IRQ0_LO, 1); BGE_EVCNT_INCR(sc->bge_ev_intr); /* clear status word */ sc->bge_rdata->bge_status_block.bge_status = 0; if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5700 || statusword & BGE_STATFLAG_LINKSTATE_CHANGED || BGE_STS_BIT(sc, BGE_STS_LINK_EVT)) bge_link_upd(sc); if (ifp->if_flags & IFF_RUNNING) { /* Check RX return ring producer/consumer */ bge_rxeof(sc); /* Check TX ring producer/consumer */ bge_txeof(sc); } if (sc->bge_pending_rxintr_change) { uint32_t rx_ticks = sc->bge_rx_coal_ticks; uint32_t rx_bds = sc->bge_rx_max_coal_bds; uint32_t junk; CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS, rx_ticks); DELAY(10); junk = CSR_READ_4(sc, BGE_HCC_RX_COAL_TICKS); CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS, rx_bds); DELAY(10); junk = CSR_READ_4(sc, BGE_HCC_RX_MAX_COAL_BDS); sc->bge_pending_rxintr_change = 0; } bge_handle_events(sc); /* Re-enable interrupts. */ bge_writembx(sc, BGE_MBX_IRQ0_LO, 0); if (ifp->if_flags & IFF_RUNNING && !IFQ_IS_EMPTY(&ifp->if_snd)) bge_start(ifp); return 1; } else return 0; } static void bge_asf_driver_up(struct bge_softc *sc) { if (sc->bge_asf_mode & ASF_STACKUP) { /* Send ASF heartbeat aprox. every 2s */ if (sc->bge_asf_count) sc->bge_asf_count --; else { sc->bge_asf_count = 2; bge_writemem_ind(sc, BGE_SOFTWARE_GENCOMM_FW, BGE_FW_DRV_ALIVE); bge_writemem_ind(sc, BGE_SOFTWARE_GENNCOMM_FW_LEN, 4); bge_writemem_ind(sc, BGE_SOFTWARE_GENNCOMM_FW_DATA, 3); CSR_WRITE_4(sc, BGE_CPU_EVENT, CSR_READ_4(sc, BGE_CPU_EVENT) | (1 << 14)); } } } static void bge_tick(void *xsc) { struct bge_softc *sc = xsc; struct mii_data *mii = &sc->bge_mii; int s; s = splnet(); if (BGE_IS_5705_PLUS(sc)) bge_stats_update_regs(sc); else bge_stats_update(sc); if (sc->bge_flags & BGE_PHY_FIBER_TBI) { /* * Since in TBI mode auto-polling can't be used we should poll * link status manually. Here we register pending link event * and trigger interrupt. */ BGE_STS_SETBIT(sc, BGE_STS_LINK_EVT); BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_INTR_SET); } else { /* * Do not touch PHY if we have link up. This could break * IPMI/ASF mode or produce extra input errors. * (extra input errors was reported for bcm5701 & bcm5704). */ if (!BGE_STS_BIT(sc, BGE_STS_LINK)) mii_tick(mii); } callout_reset(&sc->bge_timeout, hz, bge_tick, sc); splx(s); } static void bge_stats_update_regs(struct bge_softc *sc) { struct ifnet *ifp = &sc->ethercom.ec_if; ifp->if_collisions += CSR_READ_4(sc, BGE_MAC_STATS + offsetof(struct bge_mac_stats_regs, etherStatsCollisions)); ifp->if_ierrors += CSR_READ_4(sc, BGE_RXLP_LOCSTAT_IFIN_DROPS); ifp->if_ierrors += CSR_READ_4(sc, BGE_RXLP_LOCSTAT_IFIN_ERRORS); ifp->if_ierrors += CSR_READ_4(sc, BGE_RXLP_LOCSTAT_OUT_OF_BDS); } static void bge_stats_update(struct bge_softc *sc) { struct ifnet *ifp = &sc->ethercom.ec_if; bus_size_t stats = BGE_MEMWIN_START + BGE_STATS_BLOCK; #define READ_STAT(sc, stats, stat) \ CSR_READ_4(sc, stats + offsetof(struct bge_stats, stat)) ifp->if_collisions += (READ_STAT(sc, stats, dot3StatsSingleCollisionFrames.bge_addr_lo) + READ_STAT(sc, stats, dot3StatsMultipleCollisionFrames.bge_addr_lo) + READ_STAT(sc, stats, dot3StatsExcessiveCollisions.bge_addr_lo) + READ_STAT(sc, stats, dot3StatsLateCollisions.bge_addr_lo)) - ifp->if_collisions; BGE_EVCNT_UPD(sc->bge_ev_tx_xoff, READ_STAT(sc, stats, outXoffSent.bge_addr_lo)); BGE_EVCNT_UPD(sc->bge_ev_tx_xon, READ_STAT(sc, stats, outXonSent.bge_addr_lo)); BGE_EVCNT_UPD(sc->bge_ev_rx_xoff, READ_STAT(sc, stats, xoffPauseFramesReceived.bge_addr_lo)); BGE_EVCNT_UPD(sc->bge_ev_rx_xon, READ_STAT(sc, stats, xonPauseFramesReceived.bge_addr_lo)); BGE_EVCNT_UPD(sc->bge_ev_rx_macctl, READ_STAT(sc, stats, macControlFramesReceived.bge_addr_lo)); BGE_EVCNT_UPD(sc->bge_ev_xoffentered, READ_STAT(sc, stats, xoffStateEntered.bge_addr_lo)); #undef READ_STAT #ifdef notdef ifp->if_collisions += (sc->bge_rdata->bge_info.bge_stats.dot3StatsSingleCollisionFrames + sc->bge_rdata->bge_info.bge_stats.dot3StatsMultipleCollisionFrames + sc->bge_rdata->bge_info.bge_stats.dot3StatsExcessiveCollisions + sc->bge_rdata->bge_info.bge_stats.dot3StatsLateCollisions) - ifp->if_collisions; #endif } /* * Pad outbound frame to ETHER_MIN_NOPAD for an unusual reason. * The bge hardware will pad out Tx runts to ETHER_MIN_NOPAD, * but when such padded frames employ the bge IP/TCP checksum offload, * the hardware checksum assist gives incorrect results (possibly * from incorporating its own padding into the UDP/TCP checksum; who knows). * If we pad such runts with zeros, the onboard checksum comes out correct. */ static inline int bge_cksum_pad(struct mbuf *pkt) { struct mbuf *last = NULL; int padlen; padlen = ETHER_MIN_NOPAD - pkt->m_pkthdr.len; /* if there's only the packet-header and we can pad there, use it. */ if (pkt->m_pkthdr.len == pkt->m_len && M_TRAILINGSPACE(pkt) >= padlen) { last = pkt; } else { /* * Walk packet chain to find last mbuf. We will either * pad there, or append a new mbuf and pad it * (thus perhaps avoiding the bcm5700 dma-min bug). */ for (last = pkt; last->m_next != NULL; last = last->m_next) { continue; /* do nothing */ } /* `last' now points to last in chain. */ if (M_TRAILINGSPACE(last) < padlen) { /* Allocate new empty mbuf, pad it. Compact later. */ struct mbuf *n; MGET(n, M_DONTWAIT, MT_DATA); if (n == NULL) return ENOBUFS; n->m_len = 0; last->m_next = n; last = n; } } KDASSERT(!M_READONLY(last)); KDASSERT(M_TRAILINGSPACE(last) >= padlen); /* Now zero the pad area, to avoid the bge cksum-assist bug */ memset(mtod(last, char *) + last->m_len, 0, padlen); last->m_len += padlen; pkt->m_pkthdr.len += padlen; return 0; } /* * Compact outbound packets to avoid bug with DMA segments less than 8 bytes. */ static inline int bge_compact_dma_runt(struct mbuf *pkt) { struct mbuf *m, *prev; int totlen, prevlen; prev = NULL; totlen = 0; prevlen = -1; for (m = pkt; m != NULL; prev = m,m = m->m_next) { int mlen = m->m_len; int shortfall = 8 - mlen ; totlen += mlen; if (mlen == 0) continue; if (mlen >= 8) continue; /* If we get here, mbuf data is too small for DMA engine. * Try to fix by shuffling data to prev or next in chain. * If that fails, do a compacting deep-copy of the whole chain. */ /* Internal frag. If fits in prev, copy it there. */ if (prev && M_TRAILINGSPACE(prev) >= m->m_len) { memcpy(prev->m_data + prev->m_len, m->m_data, mlen); prev->m_len += mlen; m->m_len = 0; /* XXX stitch chain */ prev->m_next = m_free(m); m = prev; continue; } else if (m->m_next != NULL && M_TRAILINGSPACE(m) >= shortfall && m->m_next->m_len >= (8 + shortfall)) { /* m is writable and have enough data in next, pull up. */ memcpy(m->m_data + m->m_len, m->m_next->m_data, shortfall); m->m_len += shortfall; m->m_next->m_len -= shortfall; m->m_next->m_data += shortfall; } else if (m->m_next == NULL || 1) { /* Got a runt at the very end of the packet. * borrow data from the tail of the preceding mbuf and * update its length in-place. (The original data is still * valid, so we can do this even if prev is not writable.) */ /* if we'd make prev a runt, just move all of its data. */ KASSERT(prev != NULL /*, ("runt but null PREV")*/); KASSERT(prev->m_len >= 8 /*, ("runt prev")*/); if ((prev->m_len - shortfall) < 8) shortfall = prev->m_len; #ifdef notyet /* just do the safe slow thing for now */ if (!M_READONLY(m)) { if (M_LEADINGSPACE(m) < shorfall) { void *m_dat; m_dat = (m->m_flags & M_PKTHDR) ? m->m_pktdat : m->dat; memmove(m_dat, mtod(m, void*), m->m_len); m->m_data = m_dat; } } else #endif /* just do the safe slow thing */ { struct mbuf * n = NULL; int newprevlen = prev->m_len - shortfall; MGET(n, M_NOWAIT, MT_DATA); if (n == NULL) return ENOBUFS; KASSERT(m->m_len + shortfall < MLEN /*, ("runt %d +prev %d too big\n", m->m_len, shortfall)*/); /* first copy the data we're stealing from prev */ memcpy(n->m_data, prev->m_data + newprevlen, shortfall); /* update prev->m_len accordingly */ prev->m_len -= shortfall; /* copy data from runt m */ memcpy(n->m_data + shortfall, m->m_data, m->m_len); /* n holds what we stole from prev, plus m */ n->m_len = shortfall + m->m_len; /* stitch n into chain and free m */ n->m_next = m->m_next; prev->m_next = n; /* KASSERT(m->m_next == NULL); */ m->m_next = NULL; m_free(m); m = n; /* for continuing loop */ } } prevlen = m->m_len; } return 0; } /* * Encapsulate an mbuf chain in the tx ring by coupling the mbuf data * pointers to descriptors. */ static int bge_encap(struct bge_softc *sc, struct mbuf *m_head, uint32_t *txidx) { struct bge_tx_bd *f = NULL; uint32_t frag, cur; uint16_t csum_flags = 0; uint16_t txbd_tso_flags = 0; struct txdmamap_pool_entry *dma; bus_dmamap_t dmamap; int i = 0; struct m_tag *mtag; int use_tso, maxsegsize, error; cur = frag = *txidx; if (m_head->m_pkthdr.csum_flags) { if (m_head->m_pkthdr.csum_flags & M_CSUM_IPv4) csum_flags |= BGE_TXBDFLAG_IP_CSUM; if (m_head->m_pkthdr.csum_flags & (M_CSUM_TCPv4|M_CSUM_UDPv4)) csum_flags |= BGE_TXBDFLAG_TCP_UDP_CSUM; } /* * If we were asked to do an outboard checksum, and the NIC * has the bug where it sometimes adds in the Ethernet padding, * explicitly pad with zeros so the cksum will be correct either way. * (For now, do this for all chip versions, until newer * are confirmed to not require the workaround.) */ if ((csum_flags & BGE_TXBDFLAG_TCP_UDP_CSUM) == 0 || #ifdef notyet (sc->bge_quirks & BGE_QUIRK_SHORT_CKSUM_BUG) == 0 || #endif m_head->m_pkthdr.len >= ETHER_MIN_NOPAD) goto check_dma_bug; if (bge_cksum_pad(m_head) != 0) return ENOBUFS; check_dma_bug: if (!(BGE_CHIPREV(sc->bge_chipid) == BGE_CHIPREV_5700_BX)) goto doit; /* * bcm5700 Revision B silicon cannot handle DMA descriptors with * less than eight bytes. If we encounter a teeny mbuf * at the end of a chain, we can pad. Otherwise, copy. */ if (bge_compact_dma_runt(m_head) != 0) return ENOBUFS; doit: dma = SLIST_FIRST(&sc->txdma_list); if (dma == NULL) return ENOBUFS; dmamap = dma->dmamap; /* * Set up any necessary TSO state before we start packing... */ use_tso = (m_head->m_pkthdr.csum_flags & M_CSUM_TSOv4) != 0; if (!use_tso) { maxsegsize = 0; } else { /* TSO setup */ unsigned mss; struct ether_header *eh; unsigned ip_tcp_hlen, iptcp_opt_words, tcp_seg_flags, offset; struct mbuf * m0 = m_head; struct ip *ip; struct tcphdr *th; int iphl, hlen; /* * XXX It would be nice if the mbuf pkthdr had offset * fields for the protocol headers. */ eh = mtod(m0, struct ether_header *); switch (htons(eh->ether_type)) { case ETHERTYPE_IP: offset = ETHER_HDR_LEN; break; case ETHERTYPE_VLAN: offset = ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN; break; default: /* * Don't support this protocol or encapsulation. */ return ENOBUFS; } /* * TCP/IP headers are in the first mbuf; we can do * this the easy way. */ iphl = M_CSUM_DATA_IPv4_IPHL(m0->m_pkthdr.csum_data); hlen = iphl + offset; if (__predict_false(m0->m_len < (hlen + sizeof(struct tcphdr)))) { aprint_debug_dev(sc->bge_dev, "TSO: hard case m0->m_len == %d < ip/tcp hlen %zd," "not handled yet\n", m0->m_len, hlen+ sizeof(struct tcphdr)); #ifdef NOTYET /* * XXX jonathan@NetBSD.org: untested. * how to force this branch to be taken? */ BGE_EVCNT_INCR(&sc->sc_ev_txtsopain); m_copydata(m0, offset, sizeof(ip), &ip); m_copydata(m0, hlen, sizeof(th), &th); ip.ip_len = 0; m_copyback(m0, hlen + offsetof(struct ip, ip_len), sizeof(ip.ip_len), &ip.ip_len); th.th_sum = in_cksum_phdr(ip.ip_src.s_addr, ip.ip_dst.s_addr, htons(IPPROTO_TCP)); m_copyback(m0, hlen + offsetof(struct tcphdr, th_sum), sizeof(th.th_sum), &th.th_sum); hlen += th.th_off << 2; iptcp_opt_words = hlen; #else /* * if_wm "hard" case not yet supported, can we not * mandate it out of existence? */ (void) ip; (void)th; (void) ip_tcp_hlen; return ENOBUFS; #endif } else { ip = (struct ip *) (mtod(m0, char *) + offset); th = (struct tcphdr *) (mtod(m0, char *) + hlen); ip_tcp_hlen = iphl + (th->th_off << 2); /* Total IP/TCP options, in 32-bit words */ iptcp_opt_words = (ip_tcp_hlen - sizeof(struct tcphdr) - sizeof(struct ip)) >> 2; } if (BGE_IS_5750_OR_BEYOND(sc)) { th->th_sum = 0; csum_flags &= ~(BGE_TXBDFLAG_TCP_UDP_CSUM); } else { /* * XXX jonathan@NetBSD.org: 5705 untested. * Requires TSO firmware patch for 5701/5703/5704. */ th->th_sum = in_cksum_phdr(ip->ip_src.s_addr, ip->ip_dst.s_addr, htons(IPPROTO_TCP)); } mss = m_head->m_pkthdr.segsz; txbd_tso_flags |= BGE_TXBDFLAG_CPU_PRE_DMA | BGE_TXBDFLAG_CPU_POST_DMA; /* * Our NIC TSO-assist assumes TSO has standard, optionless * IPv4 and TCP headers, which total 40 bytes. By default, * the NIC copies 40 bytes of IP/TCP header from the * supplied header into the IP/TCP header portion of * each post-TSO-segment. If the supplied packet has IP or * TCP options, we need to tell the NIC to copy those extra * bytes into each post-TSO header, in addition to the normal * 40-byte IP/TCP header (and to leave space accordingly). * Unfortunately, the driver encoding of option length * varies across different ASIC families. */ tcp_seg_flags = 0; if (iptcp_opt_words) { if (BGE_IS_5705_PLUS(sc)) { tcp_seg_flags = iptcp_opt_words << 11; } else { txbd_tso_flags |= iptcp_opt_words << 12; } } maxsegsize = mss | tcp_seg_flags; ip->ip_len = htons(mss + ip_tcp_hlen); } /* TSO setup */ /* * Start packing the mbufs in this chain into * the fragment pointers. Stop when we run out * of fragments or hit the end of the mbuf chain. */ error = bus_dmamap_load_mbuf(sc->bge_dmatag, dmamap, m_head, BUS_DMA_NOWAIT); if (error) return ENOBUFS; /* * Sanity check: avoid coming within 16 descriptors * of the end of the ring. */ if (dmamap->dm_nsegs > (BGE_TX_RING_CNT - sc->bge_txcnt - 16)) { BGE_TSO_PRINTF(("%s: " " dmamap_load_mbuf too close to ring wrap\n", device_xname(sc->bge_dev))); goto fail_unload; } mtag = sc->ethercom.ec_nvlans ? m_tag_find(m_head, PACKET_TAG_VLAN, NULL) : NULL; /* Iterate over dmap-map fragments. */ for (i = 0; i < dmamap->dm_nsegs; i++) { f = &sc->bge_rdata->bge_tx_ring[frag]; if (sc->bge_cdata.bge_tx_chain[frag] != NULL) break; BGE_HOSTADDR(f->bge_addr, dmamap->dm_segs[i].ds_addr); f->bge_len = dmamap->dm_segs[i].ds_len; /* * For 5751 and follow-ons, for TSO we must turn * off checksum-assist flag in the tx-descr, and * supply the ASIC-revision-specific encoding * of TSO flags and segsize. */ if (use_tso) { if (BGE_IS_5750_OR_BEYOND(sc) || i == 0) { f->bge_rsvd = maxsegsize; f->bge_flags = csum_flags | txbd_tso_flags; } else { f->bge_rsvd = 0; f->bge_flags = (csum_flags | txbd_tso_flags) & 0x0fff; } } else { f->bge_rsvd = 0; f->bge_flags = csum_flags; } if (mtag != NULL) { f->bge_flags |= BGE_TXBDFLAG_VLAN_TAG; f->bge_vlan_tag = VLAN_TAG_VALUE(mtag); } else { f->bge_vlan_tag = 0; } cur = frag; BGE_INC(frag, BGE_TX_RING_CNT); } if (i < dmamap->dm_nsegs) { BGE_TSO_PRINTF(("%s: reached %d < dm_nsegs %d\n", device_xname(sc->bge_dev), i, dmamap->dm_nsegs)); goto fail_unload; } bus_dmamap_sync(sc->bge_dmatag, dmamap, 0, dmamap->dm_mapsize, BUS_DMASYNC_PREWRITE); if (frag == sc->bge_tx_saved_considx) { BGE_TSO_PRINTF(("%s: frag %d = wrapped id %d?\n", device_xname(sc->bge_dev), frag, sc->bge_tx_saved_considx)); goto fail_unload; } sc->bge_rdata->bge_tx_ring[cur].bge_flags |= BGE_TXBDFLAG_END; sc->bge_cdata.bge_tx_chain[cur] = m_head; SLIST_REMOVE_HEAD(&sc->txdma_list, link); sc->txdma[cur] = dma; sc->bge_txcnt += dmamap->dm_nsegs; *txidx = frag; return 0; fail_unload: bus_dmamap_unload(sc->bge_dmatag, dmamap); return ENOBUFS; } /* * Main transmit routine. To avoid having to do mbuf copies, we put pointers * to the mbuf data regions directly in the transmit descriptors. */ static void bge_start(struct ifnet *ifp) { struct bge_softc *sc; struct mbuf *m_head = NULL; uint32_t prodidx; int pkts = 0; sc = ifp->if_softc; if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) return; prodidx = sc->bge_tx_prodidx; while (sc->bge_cdata.bge_tx_chain[prodidx] == NULL) { IFQ_POLL(&ifp->if_snd, m_head); if (m_head == NULL) break; #if 0 /* * XXX * safety overkill. If this is a fragmented packet chain * with delayed TCP/UDP checksums, then only encapsulate * it if we have enough descriptors to handle the entire * chain at once. * (paranoia -- may not actually be needed) */ if (m_head->m_flags & M_FIRSTFRAG && m_head->m_pkthdr.csum_flags & (CSUM_DELAY_DATA)) { if ((BGE_TX_RING_CNT - sc->bge_txcnt) < M_CSUM_DATA_IPv4_OFFSET(m_head->m_pkthdr.csum_data) + 16) { ifp->if_flags |= IFF_OACTIVE; break; } } #endif /* * Pack the data into the transmit ring. If we * don't have room, set the OACTIVE flag and wait * for the NIC to drain the ring. */ if (bge_encap(sc, m_head, &prodidx)) { ifp->if_flags |= IFF_OACTIVE; break; } /* now we are committed to transmit the packet */ IFQ_DEQUEUE(&ifp->if_snd, m_head); pkts++; /* * If there's a BPF listener, bounce a copy of this frame * to him. */ bpf_mtap(ifp, m_head); } if (pkts == 0) return; /* Transmit */ bge_writembx(sc, BGE_MBX_TX_HOST_PROD0_LO, prodidx); /* 5700 b2 errata */ if (BGE_CHIPREV(sc->bge_chipid) == BGE_CHIPREV_5700_BX) bge_writembx(sc, BGE_MBX_TX_HOST_PROD0_LO, prodidx); sc->bge_tx_prodidx = prodidx; /* * Set a timeout in case the chip goes out to lunch. */ ifp->if_timer = 5; } static int bge_init(struct ifnet *ifp) { struct bge_softc *sc = ifp->if_softc; const uint16_t *m; int s, error = 0; s = splnet(); ifp = &sc->ethercom.ec_if; /* Cancel pending I/O and flush buffers. */ bge_stop(ifp, 0); bge_stop_fw(sc); bge_sig_pre_reset(sc, BGE_RESET_START); bge_reset(sc); bge_sig_legacy(sc, BGE_RESET_START); bge_sig_post_reset(sc, BGE_RESET_START); bge_chipinit(sc); /* * Init the various state machines, ring * control blocks and firmware. */ error = bge_blockinit(sc); if (error != 0) { aprint_error_dev(sc->bge_dev, "initialization error %d\n", error); splx(s); return error; } ifp = &sc->ethercom.ec_if; /* Specify MTU. */ CSR_WRITE_4(sc, BGE_RX_MTU, ifp->if_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN + ETHER_VLAN_ENCAP_LEN); /* Load our MAC address. */ m = (const uint16_t *)&(CLLADDR(ifp->if_sadl)[0]); CSR_WRITE_4(sc, BGE_MAC_ADDR1_LO, htons(m[0])); CSR_WRITE_4(sc, BGE_MAC_ADDR1_HI, (htons(m[1]) << 16) | htons(m[2])); /* Enable or disable promiscuous mode as needed. */ if (ifp->if_flags & IFF_PROMISC) BGE_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC); else BGE_CLRBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC); /* Program multicast filter. */ bge_setmulti(sc); /* Init RX ring. */ bge_init_rx_ring_std(sc); /* * Workaround for a bug in 5705 ASIC rev A0. Poll the NIC's * memory to insure that the chip has in fact read the first * entry of the ring. */ if (sc->bge_chipid == BGE_CHIPID_BCM5705_A0) { uint32_t v, i; for (i = 0; i < 10; i++) { DELAY(20); v = bge_readmem_ind(sc, BGE_STD_RX_RINGS + 8); if (v == (MCLBYTES - ETHER_ALIGN)) break; } if (i == 10) aprint_error_dev(sc->bge_dev, "5705 A0 chip failed to load RX ring\n"); } /* Init jumbo RX ring. */ if (ifp->if_mtu > (ETHERMTU + ETHER_HDR_LEN + ETHER_CRC_LEN)) bge_init_rx_ring_jumbo(sc); /* Init our RX return ring index */ sc->bge_rx_saved_considx = 0; /* Init TX ring. */ bge_init_tx_ring(sc); /* Turn on transmitter */ BGE_SETBIT(sc, BGE_TX_MODE, BGE_TXMODE_ENABLE); /* Turn on receiver */ BGE_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_ENABLE); CSR_WRITE_4(sc, BGE_MAX_RX_FRAME_LOWAT, 2); /* Tell firmware we're alive. */ BGE_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP); /* Enable host interrupts. */ BGE_SETBIT(sc, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_CLEAR_INTA); BGE_CLRBIT(sc, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_MASK_PCI_INTR); bge_writembx(sc, BGE_MBX_IRQ0_LO, 0); if ((error = bge_ifmedia_upd(ifp)) != 0) goto out; ifp->if_flags |= IFF_RUNNING; ifp->if_flags &= ~IFF_OACTIVE; callout_reset(&sc->bge_timeout, hz, bge_tick, sc); out: sc->bge_if_flags = ifp->if_flags; splx(s); return error; } /* * Set media options. */ static int bge_ifmedia_upd(struct ifnet *ifp) { struct bge_softc *sc = ifp->if_softc; struct mii_data *mii = &sc->bge_mii; struct ifmedia *ifm = &sc->bge_ifmedia; int rc; /* If this is a 1000baseX NIC, enable the TBI port. */ if (sc->bge_flags & BGE_PHY_FIBER_TBI) { if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER) return EINVAL; switch (IFM_SUBTYPE(ifm->ifm_media)) { case IFM_AUTO: /* * The BCM5704 ASIC appears to have a special * mechanism for programming the autoneg * advertisement registers in TBI mode. */ if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5704) { uint32_t sgdig; sgdig = CSR_READ_4(sc, BGE_SGDIG_STS); if (sgdig & BGE_SGDIGSTS_DONE) { CSR_WRITE_4(sc, BGE_TX_TBI_AUTONEG, 0); sgdig = CSR_READ_4(sc, BGE_SGDIG_CFG); sgdig |= BGE_SGDIGCFG_AUTO | BGE_SGDIGCFG_PAUSE_CAP | BGE_SGDIGCFG_ASYM_PAUSE; CSR_WRITE_4(sc, BGE_SGDIG_CFG, sgdig | BGE_SGDIGCFG_SEND); DELAY(5); CSR_WRITE_4(sc, BGE_SGDIG_CFG, sgdig); } } break; case IFM_1000_SX: if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX) { BGE_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX); } else { BGE_SETBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX); } break; default: return EINVAL; } /* XXX 802.3x flow control for 1000BASE-SX */ return 0; } BGE_STS_SETBIT(sc, BGE_STS_LINK_EVT); if ((rc = mii_mediachg(mii)) == ENXIO) return 0; /* * Force an interrupt so that we will call bge_link_upd * if needed and clear any pending link state attention. * Without this we are not getting any further interrupts * for link state changes and thus will not UP the link and * not be able to send in bge_start. The only way to get * things working was to receive a packet and get a RX intr. */ if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5700 || sc->bge_flags & BGE_IS_5788) BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_INTR_SET); else BGE_SETBIT(sc, BGE_HCC_MODE, BGE_HCCMODE_COAL_NOW); return rc; } /* * Report current media status. */ static void bge_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) { struct bge_softc *sc = ifp->if_softc; struct mii_data *mii = &sc->bge_mii; if (sc->bge_flags & BGE_PHY_FIBER_TBI) { ifmr->ifm_status = IFM_AVALID; ifmr->ifm_active = IFM_ETHER; if (CSR_READ_4(sc, BGE_MAC_STS) & BGE_MACSTAT_TBI_PCS_SYNCHED) ifmr->ifm_status |= IFM_ACTIVE; ifmr->ifm_active |= IFM_1000_SX; if (CSR_READ_4(sc, BGE_MAC_MODE) & BGE_MACMODE_HALF_DUPLEX) ifmr->ifm_active |= IFM_HDX; else ifmr->ifm_active |= IFM_FDX; return; } mii_pollstat(mii); ifmr->ifm_status = mii->mii_media_status; ifmr->ifm_active = (mii->mii_media_active & ~IFM_ETH_FMASK) | sc->bge_flowflags; } static int bge_ifflags_cb(struct ethercom *ec) { struct ifnet *ifp = &ec->ec_if; struct bge_softc *sc = ifp->if_softc; int change = ifp->if_flags ^ sc->bge_if_flags; if ((change & ~(IFF_CANTCHANGE|IFF_DEBUG)) != 0) return ENETRESET; else if ((change & (IFF_PROMISC | IFF_ALLMULTI)) == 0) return 0; if ((ifp->if_flags & IFF_PROMISC) == 0) BGE_CLRBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC); else BGE_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC); bge_setmulti(sc); sc->bge_if_flags = ifp->if_flags; return 0; } static int bge_ioctl(struct ifnet *ifp, u_long command, void *data) { struct bge_softc *sc = ifp->if_softc; struct ifreq *ifr = (struct ifreq *) data; int s, error = 0; struct mii_data *mii; s = splnet(); switch (command) { case SIOCSIFMEDIA: /* XXX Flow control is not supported for 1000BASE-SX */ if (sc->bge_flags & BGE_PHY_FIBER_TBI) { ifr->ifr_media &= ~IFM_ETH_FMASK; sc->bge_flowflags = 0; } /* Flow control requires full-duplex mode. */ if (IFM_SUBTYPE(ifr->ifr_media) == IFM_AUTO || (ifr->ifr_media & IFM_FDX) == 0) { ifr->ifr_media &= ~IFM_ETH_FMASK; } if (IFM_SUBTYPE(ifr->ifr_media) != IFM_AUTO) { if ((ifr->ifr_media & IFM_ETH_FMASK) == IFM_FLOW) { /* We can do both TXPAUSE and RXPAUSE. */ ifr->ifr_media |= IFM_ETH_TXPAUSE | IFM_ETH_RXPAUSE; } sc->bge_flowflags = ifr->ifr_media & IFM_ETH_FMASK; } /* FALLTHROUGH */ case SIOCGIFMEDIA: if (sc->bge_flags & BGE_PHY_FIBER_TBI) { error = ifmedia_ioctl(ifp, ifr, &sc->bge_ifmedia, command); } else { mii = &sc->bge_mii; error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); } break; default: if ((error = ether_ioctl(ifp, command, data)) != ENETRESET) break; error = 0; if (command != SIOCADDMULTI && command != SIOCDELMULTI) ; else if (ifp->if_flags & IFF_RUNNING) bge_setmulti(sc); break; } splx(s); return error; } static void bge_watchdog(struct ifnet *ifp) { struct bge_softc *sc; sc = ifp->if_softc; aprint_error_dev(sc->bge_dev, "watchdog timeout -- resetting\n"); ifp->if_flags &= ~IFF_RUNNING; bge_init(ifp); ifp->if_oerrors++; } static void bge_stop_block(struct bge_softc *sc, bus_addr_t reg, uint32_t bit) { int i; BGE_CLRBIT(sc, reg, bit); for (i = 0; i < 1000; i++) { if ((CSR_READ_4(sc, reg) & bit) == 0) return; delay(100); } /* * Doesn't print only when the register is BGE_SRS_MODE. It occurs * on some environment (and once after boot?) */ if (reg != BGE_SRS_MODE) aprint_error_dev(sc->bge_dev, "block failed to stop: reg 0x%lx, bit 0x%08x\n", (u_long)reg, bit); } /* * Stop the adapter and free any mbufs allocated to the * RX and TX lists. */ static void bge_stop(struct ifnet *ifp, int disable) { struct bge_softc *sc = ifp->if_softc; callout_stop(&sc->bge_timeout); /* * Tell firmware we're shutting down. */ bge_stop_fw(sc); bge_sig_pre_reset(sc, BGE_RESET_STOP); /* Disable host interrupts. */ BGE_SETBIT(sc, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_MASK_PCI_INTR); bge_writembx(sc, BGE_MBX_IRQ0_LO, 1); /* * Disable all of the receiver blocks */ bge_stop_block(sc, BGE_RX_MODE, BGE_RXMODE_ENABLE); bge_stop_block(sc, BGE_RBDI_MODE, BGE_RBDIMODE_ENABLE); bge_stop_block(sc, BGE_RXLP_MODE, BGE_RXLPMODE_ENABLE); if (BGE_IS_5700_FAMILY(sc)) bge_stop_block(sc, BGE_RXLS_MODE, BGE_RXLSMODE_ENABLE); bge_stop_block(sc, BGE_RDBDI_MODE, BGE_RBDIMODE_ENABLE); bge_stop_block(sc, BGE_RDC_MODE, BGE_RDCMODE_ENABLE); bge_stop_block(sc, BGE_RBDC_MODE, BGE_RBDCMODE_ENABLE); /* * Disable all of the transmit blocks */ bge_stop_block(sc, BGE_SRS_MODE, BGE_SRSMODE_ENABLE); bge_stop_block(sc, BGE_SBDI_MODE, BGE_SBDIMODE_ENABLE); bge_stop_block(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE); bge_stop_block(sc, BGE_RDMA_MODE, BGE_RDMAMODE_ENABLE); bge_stop_block(sc, BGE_SDC_MODE, BGE_SDCMODE_ENABLE); if (BGE_IS_5700_FAMILY(sc)) bge_stop_block(sc, BGE_DMAC_MODE, BGE_DMACMODE_ENABLE); bge_stop_block(sc, BGE_SBDC_MODE, BGE_SBDCMODE_ENABLE); /* * Shut down all of the memory managers and related * state machines. */ bge_stop_block(sc, BGE_HCC_MODE, BGE_HCCMODE_ENABLE); bge_stop_block(sc, BGE_WDMA_MODE, BGE_WDMAMODE_ENABLE); if (BGE_IS_5700_FAMILY(sc)) bge_stop_block(sc, BGE_MBCF_MODE, BGE_MBCFMODE_ENABLE); CSR_WRITE_4(sc, BGE_FTQ_RESET, 0xFFFFFFFF); CSR_WRITE_4(sc, BGE_FTQ_RESET, 0); if (BGE_IS_5700_FAMILY(sc)) { bge_stop_block(sc, BGE_BMAN_MODE, BGE_BMANMODE_ENABLE); bge_stop_block(sc, BGE_MARB_MODE, BGE_MARBMODE_ENABLE); } bge_reset(sc); bge_sig_legacy(sc, BGE_RESET_STOP); bge_sig_post_reset(sc, BGE_RESET_STOP); /* * Keep the ASF firmware running if up. */ if (sc->bge_asf_mode & ASF_STACKUP) BGE_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP); else BGE_CLRBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP); /* Free the RX lists. */ bge_free_rx_ring_std(sc); /* Free jumbo RX list. */ if (BGE_IS_JUMBO_CAPABLE(sc)) bge_free_rx_ring_jumbo(sc); /* Free TX buffers. */ bge_free_tx_ring(sc); /* * Isolate/power down the PHY. */ if (!(sc->bge_flags & BGE_PHY_FIBER_TBI)) mii_down(&sc->bge_mii); sc->bge_tx_saved_considx = BGE_TXCONS_UNSET; /* Clear MAC's link state (PHY may still have link UP). */ BGE_STS_CLRBIT(sc, BGE_STS_LINK); ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); } static void bge_link_upd(struct bge_softc *sc) { struct ifnet *ifp = &sc->ethercom.ec_if; struct mii_data *mii = &sc->bge_mii; uint32_t status; int link; /* Clear 'pending link event' flag */ BGE_STS_CLRBIT(sc, BGE_STS_LINK_EVT); /* * Process link state changes. * Grrr. The link status word in the status block does * not work correctly on the BCM5700 rev AX and BX chips, * according to all available information. Hence, we have * to enable MII interrupts in order to properly obtain * async link changes. Unfortunately, this also means that * we have to read the MAC status register to detect link * changes, thereby adding an additional register access to * the interrupt handler. */ if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5700) { status = CSR_READ_4(sc, BGE_MAC_STS); if (status & BGE_MACSTAT_MI_INTERRUPT) { mii_pollstat(mii); if (!BGE_STS_BIT(sc, BGE_STS_LINK) && mii->mii_media_status & IFM_ACTIVE && IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) BGE_STS_SETBIT(sc, BGE_STS_LINK); else if (BGE_STS_BIT(sc, BGE_STS_LINK) && (!(mii->mii_media_status & IFM_ACTIVE) || IFM_SUBTYPE(mii->mii_media_active) == IFM_NONE)) BGE_STS_CLRBIT(sc, BGE_STS_LINK); /* Clear the interrupt */ CSR_WRITE_4(sc, BGE_MAC_EVT_ENB, BGE_EVTENB_MI_INTERRUPT); bge_miibus_readreg(sc->bge_dev, 1, BRGPHY_MII_ISR); bge_miibus_writereg(sc->bge_dev, 1, BRGPHY_MII_IMR, BRGPHY_INTRS); } return; } if (sc->bge_flags & BGE_PHY_FIBER_TBI) { status = CSR_READ_4(sc, BGE_MAC_STS); if (status & BGE_MACSTAT_TBI_PCS_SYNCHED) { if (!BGE_STS_BIT(sc, BGE_STS_LINK)) { BGE_STS_SETBIT(sc, BGE_STS_LINK); if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5704) BGE_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_TBI_SEND_CFGS); CSR_WRITE_4(sc, BGE_MAC_STS, 0xFFFFFFFF); if_link_state_change(ifp, LINK_STATE_UP); } } else if (BGE_STS_BIT(sc, BGE_STS_LINK)) { BGE_STS_CLRBIT(sc, BGE_STS_LINK); if_link_state_change(ifp, LINK_STATE_DOWN); } /* * Discard link events for MII/GMII cards if MI auto-polling disabled. * This should not happen since mii callouts are locked now, but * we keep this check for debug. */ } else if (BGE_STS_BIT(sc, BGE_STS_AUTOPOLL)) { /* * Some broken BCM chips have BGE_STATFLAG_LINKSTATE_CHANGED * bit in status word always set. Workaround this bug by * reading PHY link status directly. */ link = (CSR_READ_4(sc, BGE_MI_STS) & BGE_MISTS_LINK)? BGE_STS_LINK : 0; if (BGE_STS_BIT(sc, BGE_STS_LINK) != link) { mii_pollstat(mii); if (!BGE_STS_BIT(sc, BGE_STS_LINK) && mii->mii_media_status & IFM_ACTIVE && IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) BGE_STS_SETBIT(sc, BGE_STS_LINK); else if (BGE_STS_BIT(sc, BGE_STS_LINK) && (!(mii->mii_media_status & IFM_ACTIVE) || IFM_SUBTYPE(mii->mii_media_active) == IFM_NONE)) BGE_STS_CLRBIT(sc, BGE_STS_LINK); } } /* Clear the attention */ CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED| BGE_MACSTAT_CFG_CHANGED|BGE_MACSTAT_MI_COMPLETE| BGE_MACSTAT_LINK_CHANGED); } static int sysctl_bge_verify(SYSCTLFN_ARGS) { int error, t; struct sysctlnode node; node = *rnode; t = *(int*)rnode->sysctl_data; node.sysctl_data = &t; error = sysctl_lookup(SYSCTLFN_CALL(&node)); if (error || newp == NULL) return error; #if 0 DPRINTF2(("%s: t = %d, nodenum = %d, rnodenum = %d\n", __func__, t, node.sysctl_num, rnode->sysctl_num)); #endif if (node.sysctl_num == bge_rxthresh_nodenum) { if (t < 0 || t >= NBGE_RX_THRESH) return EINVAL; bge_update_all_threshes(t); } else return EINVAL; *(int*)rnode->sysctl_data = t; return 0; } /* * Set up sysctl(3) MIB, hw.bge.*. */ static void sysctl_bge_init(struct bge_softc *sc) { int rc, bge_root_num; const struct sysctlnode *node; if ((rc = sysctl_createv(&sc->bge_log, 0, NULL, NULL, CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", NULL, NULL, 0, NULL, 0, CTL_HW, CTL_EOL)) != 0) { goto out; } if ((rc = sysctl_createv(&sc->bge_log, 0, NULL, &node, 0, CTLTYPE_NODE, "bge", SYSCTL_DESCR("BGE interface controls"), NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL)) != 0) { goto out; } bge_root_num = node->sysctl_num; /* BGE Rx interrupt mitigation level */ if ((rc = sysctl_createv(&sc->bge_log, 0, NULL, &node, CTLFLAG_READWRITE, CTLTYPE_INT, "rx_lvl", SYSCTL_DESCR("BGE receive interrupt mitigation level"), sysctl_bge_verify, 0, &bge_rx_thresh_lvl, 0, CTL_HW, bge_root_num, CTL_CREATE, CTL_EOL)) != 0) { goto out; } bge_rxthresh_nodenum = node->sysctl_num; return; out: aprint_error("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); } #ifdef BGE_DEBUG void bge_debug_info(struct bge_softc *sc) { printf("Hardware Flags:\n"); if (BGE_IS_5755_PLUS(sc)) printf(" - 5755 Plus\n"); if (BGE_IS_5750_OR_BEYOND(sc)) printf(" - 5750 Plus\n"); if (BGE_IS_5705_PLUS(sc)) printf(" - 5705 Plus\n"); if (BGE_IS_5714_FAMILY(sc)) printf(" - 5714 Family\n"); if (BGE_IS_5700_FAMILY(sc)) printf(" - 5700 Family\n"); if (sc->bge_flags & BGE_IS_5788) printf(" - 5788\n"); if (sc->bge_flags & BGE_JUMBO_CAPABLE) printf(" - Supports Jumbo Frames\n"); if (sc->bge_flags & BGE_NO_EEPROM) printf(" - No EEPROM\n"); if (sc->bge_flags & BGE_PCIX) printf(" - PCI-X Bus\n"); if (sc->bge_flags & BGE_PCIE) printf(" - PCI Express Bus\n"); if (sc->bge_flags & BGE_NO_3LED) printf(" - No 3 LEDs\n"); if (sc->bge_flags & BGE_RX_ALIGNBUG) printf(" - RX Alignment Bug\n"); if (sc->bge_flags & BGE_TSO) printf(" - TSO\n"); } #endif /* BGE_DEBUG */ static int bge_get_eaddr_fw(struct bge_softc *sc, uint8_t ether_addr[]) { prop_dictionary_t dict; prop_data_t ea; if ((sc->bge_flags & BGE_NO_EEPROM) == 0) return 1; dict = device_properties(sc->bge_dev); ea = prop_dictionary_get(dict, "mac-address"); if (ea != NULL) { KASSERT(prop_object_type(ea) == PROP_TYPE_DATA); KASSERT(prop_data_size(ea) == ETHER_ADDR_LEN); memcpy(ether_addr, prop_data_data_nocopy(ea), ETHER_ADDR_LEN); return 0; } return 1; } static int bge_get_eaddr_mem(struct bge_softc *sc, uint8_t ether_addr[]) { uint32_t mac_addr; mac_addr = bge_readmem_ind(sc, 0x0c14); if ((mac_addr >> 16) == 0x484b) { ether_addr[0] = (uint8_t)(mac_addr >> 8); ether_addr[1] = (uint8_t)mac_addr; mac_addr = bge_readmem_ind(sc, 0x0c18); ether_addr[2] = (uint8_t)(mac_addr >> 24); ether_addr[3] = (uint8_t)(mac_addr >> 16); ether_addr[4] = (uint8_t)(mac_addr >> 8); ether_addr[5] = (uint8_t)mac_addr; return 0; } return 1; } static int bge_get_eaddr_nvram(struct bge_softc *sc, uint8_t ether_addr[]) { int mac_offset = BGE_EE_MAC_OFFSET; if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5906) mac_offset = BGE_EE_MAC_OFFSET_5906; return (bge_read_nvram(sc, ether_addr, mac_offset + 2, ETHER_ADDR_LEN)); } static int bge_get_eaddr_eeprom(struct bge_softc *sc, uint8_t ether_addr[]) { if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5906) return 1; return (bge_read_eeprom(sc, ether_addr, BGE_EE_MAC_OFFSET + 2, ETHER_ADDR_LEN)); } static int bge_get_eaddr(struct bge_softc *sc, uint8_t eaddr[]) { static const bge_eaddr_fcn_t bge_eaddr_funcs[] = { /* NOTE: Order is critical */ bge_get_eaddr_fw, bge_get_eaddr_mem, bge_get_eaddr_nvram, bge_get_eaddr_eeprom, NULL }; const bge_eaddr_fcn_t *func; for (func = bge_eaddr_funcs; *func != NULL; ++func) { if ((*func)(sc, eaddr) == 0) break; } return (*func == NULL ? ENXIO : 0); }