if_sis.c revision 121262
150974Swpaul/* 250974Swpaul * Copyright (c) 1997, 1998, 1999 350974Swpaul * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. 450974Swpaul * 550974Swpaul * Redistribution and use in source and binary forms, with or without 650974Swpaul * modification, are permitted provided that the following conditions 750974Swpaul * are met: 850974Swpaul * 1. Redistributions of source code must retain the above copyright 950974Swpaul * notice, this list of conditions and the following disclaimer. 1050974Swpaul * 2. Redistributions in binary form must reproduce the above copyright 1150974Swpaul * notice, this list of conditions and the following disclaimer in the 1250974Swpaul * documentation and/or other materials provided with the distribution. 1350974Swpaul * 3. All advertising materials mentioning features or use of this software 1450974Swpaul * must display the following acknowledgement: 1550974Swpaul * This product includes software developed by Bill Paul. 1650974Swpaul * 4. Neither the name of the author nor the names of any co-contributors 1750974Swpaul * may be used to endorse or promote products derived from this software 1850974Swpaul * without specific prior written permission. 1950974Swpaul * 2050974Swpaul * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 2150974Swpaul * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2250974Swpaul * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2350974Swpaul * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 2450974Swpaul * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 2550974Swpaul * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 2650974Swpaul * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 2750974Swpaul * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 2850974Swpaul * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 2950974Swpaul * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 3050974Swpaul * THE POSSIBILITY OF SUCH DAMAGE. 3150974Swpaul */ 3250974Swpaul 3350974Swpaul/* 3450974Swpaul * SiS 900/SiS 7016 fast ethernet PCI NIC driver. Datasheets are 3550974Swpaul * available from http://www.sis.com.tw. 3650974Swpaul * 3764963Swpaul * This driver also supports the NatSemi DP83815. Datasheets are 3864963Swpaul * available from http://www.national.com. 3964963Swpaul * 4050974Swpaul * Written by Bill Paul <wpaul@ee.columbia.edu> 4150974Swpaul * Electrical Engineering Department 4250974Swpaul * Columbia University, New York City 4350974Swpaul */ 4450974Swpaul 4550974Swpaul/* 4650974Swpaul * The SiS 900 is a fairly simple chip. It uses bus master DMA with 4750974Swpaul * simple TX and RX descriptors of 3 longwords in size. The receiver 4850974Swpaul * has a single perfect filter entry for the station address and a 4950974Swpaul * 128-bit multicast hash table. The SiS 900 has a built-in MII-based 5050974Swpaul * transceiver while the 7016 requires an external transceiver chip. 5150974Swpaul * Both chips offer the standard bit-bang MII interface as well as 5250974Swpaul * an enchanced PHY interface which simplifies accessing MII registers. 5350974Swpaul * 5450974Swpaul * The only downside to this chipset is that RX descriptors must be 5550974Swpaul * longword aligned. 5650974Swpaul */ 5750974Swpaul 58113038Sobrien#include <sys/cdefs.h> 59113038Sobrien__FBSDID("$FreeBSD: head/sys/pci/if_sis.c 121262 2003-10-19 23:28:02Z silby $"); 60113038Sobrien 6150974Swpaul#include <sys/param.h> 6250974Swpaul#include <sys/systm.h> 6350974Swpaul#include <sys/sockio.h> 6450974Swpaul#include <sys/mbuf.h> 6550974Swpaul#include <sys/malloc.h> 6650974Swpaul#include <sys/kernel.h> 6750974Swpaul#include <sys/socket.h> 6887059Sluigi#include <sys/sysctl.h> 6950974Swpaul 7050974Swpaul#include <net/if.h> 7150974Swpaul#include <net/if_arp.h> 7250974Swpaul#include <net/ethernet.h> 7350974Swpaul#include <net/if_dl.h> 7450974Swpaul#include <net/if_media.h> 7587390Sjhay#include <net/if_types.h> 7687390Sjhay#include <net/if_vlan_var.h> 7750974Swpaul 7850974Swpaul#include <net/bpf.h> 7950974Swpaul 8050974Swpaul#include <machine/bus_pio.h> 8150974Swpaul#include <machine/bus_memio.h> 8250974Swpaul#include <machine/bus.h> 8350974Swpaul#include <machine/resource.h> 8450974Swpaul#include <sys/bus.h> 8550974Swpaul#include <sys/rman.h> 8650974Swpaul 8750974Swpaul#include <dev/mii/mii.h> 8850974Swpaul#include <dev/mii/miivar.h> 8950974Swpaul 90119288Simp#include <dev/pci/pcireg.h> 91119288Simp#include <dev/pci/pcivar.h> 9250974Swpaul 9350974Swpaul#define SIS_USEIOSPACE 9450974Swpaul 9550974Swpaul#include <pci/if_sisreg.h> 9650974Swpaul 97113506SmdoddMODULE_DEPEND(sis, pci, 1, 1, 1); 98113506SmdoddMODULE_DEPEND(sis, ether, 1, 1, 1); 9959758SpeterMODULE_DEPEND(sis, miibus, 1, 1, 1); 10059758Speter 10151089Speter/* "controller miibus0" required. See GENERIC if you get errors here. */ 10250974Swpaul#include "miibus_if.h" 10350974Swpaul 10450974Swpaul/* 10550974Swpaul * Various supported device vendors/types and their names. 10650974Swpaul */ 10750974Swpaulstatic struct sis_type sis_devs[] = { 10850974Swpaul { SIS_VENDORID, SIS_DEVICEID_900, "SiS 900 10/100BaseTX" }, 10950974Swpaul { SIS_VENDORID, SIS_DEVICEID_7016, "SiS 7016 10/100BaseTX" }, 110119712Sphk { NS_VENDORID, NS_DEVICEID_DP83815, "NatSemi DP8381[56] 10/100BaseTX" }, 11150974Swpaul { 0, 0, NULL } 11250974Swpaul}; 11350974Swpaul 11492739Salfredstatic int sis_probe (device_t); 11592739Salfredstatic int sis_attach (device_t); 11692739Salfredstatic int sis_detach (device_t); 11750974Swpaul 11892739Salfredstatic int sis_newbuf (struct sis_softc *, 11992739Salfred struct sis_desc *, struct mbuf *); 12092739Salfredstatic int sis_encap (struct sis_softc *, 121121262Ssilby struct mbuf **, u_int32_t *); 12292739Salfredstatic void sis_rxeof (struct sis_softc *); 12392739Salfredstatic void sis_rxeoc (struct sis_softc *); 12492739Salfredstatic void sis_txeof (struct sis_softc *); 12592739Salfredstatic void sis_intr (void *); 12692739Salfredstatic void sis_tick (void *); 12792739Salfredstatic void sis_start (struct ifnet *); 12892739Salfredstatic int sis_ioctl (struct ifnet *, u_long, caddr_t); 12992739Salfredstatic void sis_init (void *); 13092739Salfredstatic void sis_stop (struct sis_softc *); 13192739Salfredstatic void sis_watchdog (struct ifnet *); 13292739Salfredstatic void sis_shutdown (device_t); 13392739Salfredstatic int sis_ifmedia_upd (struct ifnet *); 13492739Salfredstatic void sis_ifmedia_sts (struct ifnet *, struct ifmediareq *); 13550974Swpaul 13692739Salfredstatic u_int16_t sis_reverse (u_int16_t); 13792739Salfredstatic void sis_delay (struct sis_softc *); 13892739Salfredstatic void sis_eeprom_idle (struct sis_softc *); 13992739Salfredstatic void sis_eeprom_putbyte (struct sis_softc *, int); 14092739Salfredstatic void sis_eeprom_getword (struct sis_softc *, int, u_int16_t *); 14192739Salfredstatic void sis_read_eeprom (struct sis_softc *, caddr_t, int, int, int); 14272197Swpaul#ifdef __i386__ 14392739Salfredstatic void sis_read_cmos (struct sis_softc *, device_t, caddr_t, 14492739Salfred int, int); 14592739Salfredstatic void sis_read_mac (struct sis_softc *, device_t, caddr_t); 14692739Salfredstatic device_t sis_find_bridge (device_t); 14772197Swpaul#endif 14872197Swpaul 149109060Smbrstatic void sis_mii_sync (struct sis_softc *); 150109060Smbrstatic void sis_mii_send (struct sis_softc *, u_int32_t, int); 151109060Smbrstatic int sis_mii_readreg (struct sis_softc *, struct sis_mii_frame *); 152109060Smbrstatic int sis_mii_writereg (struct sis_softc *, struct sis_mii_frame *); 15392739Salfredstatic int sis_miibus_readreg (device_t, int, int); 15492739Salfredstatic int sis_miibus_writereg (device_t, int, int, int); 15592739Salfredstatic void sis_miibus_statchg (device_t); 15650974Swpaul 15792739Salfredstatic void sis_setmulti_sis (struct sis_softc *); 15892739Salfredstatic void sis_setmulti_ns (struct sis_softc *); 15992739Salfredstatic u_int32_t sis_crc (struct sis_softc *, caddr_t); 16092739Salfredstatic void sis_reset (struct sis_softc *); 16192739Salfredstatic int sis_list_rx_init (struct sis_softc *); 16292739Salfredstatic int sis_list_tx_init (struct sis_softc *); 16350974Swpaul 16492739Salfredstatic void sis_dma_map_desc_ptr (void *, bus_dma_segment_t *, int, int); 16592739Salfredstatic void sis_dma_map_desc_next (void *, bus_dma_segment_t *, int, int); 16692739Salfredstatic void sis_dma_map_ring (void *, bus_dma_segment_t *, int, int); 16750974Swpaul#ifdef SIS_USEIOSPACE 16850974Swpaul#define SIS_RES SYS_RES_IOPORT 16950974Swpaul#define SIS_RID SIS_PCI_LOIO 17050974Swpaul#else 17151030Swpaul#define SIS_RES SYS_RES_MEMORY 17251030Swpaul#define SIS_RID SIS_PCI_LOMEM 17350974Swpaul#endif 17450974Swpaul 17550974Swpaulstatic device_method_t sis_methods[] = { 17650974Swpaul /* Device interface */ 17750974Swpaul DEVMETHOD(device_probe, sis_probe), 17850974Swpaul DEVMETHOD(device_attach, sis_attach), 17950974Swpaul DEVMETHOD(device_detach, sis_detach), 18050974Swpaul DEVMETHOD(device_shutdown, sis_shutdown), 18150974Swpaul 18250974Swpaul /* bus interface */ 18350974Swpaul DEVMETHOD(bus_print_child, bus_generic_print_child), 18450974Swpaul DEVMETHOD(bus_driver_added, bus_generic_driver_added), 18550974Swpaul 18650974Swpaul /* MII interface */ 18750974Swpaul DEVMETHOD(miibus_readreg, sis_miibus_readreg), 18850974Swpaul DEVMETHOD(miibus_writereg, sis_miibus_writereg), 18950974Swpaul DEVMETHOD(miibus_statchg, sis_miibus_statchg), 19050974Swpaul 19150974Swpaul { 0, 0 } 19250974Swpaul}; 19350974Swpaul 19450974Swpaulstatic driver_t sis_driver = { 19551455Swpaul "sis", 19650974Swpaul sis_methods, 19750974Swpaul sizeof(struct sis_softc) 19850974Swpaul}; 19950974Swpaul 20050974Swpaulstatic devclass_t sis_devclass; 20150974Swpaul 202113506SmdoddDRIVER_MODULE(sis, pci, sis_driver, sis_devclass, 0, 0); 20351473SwpaulDRIVER_MODULE(miibus, sis, miibus_driver, miibus_devclass, 0, 0); 20450974Swpaul 20550974Swpaul#define SIS_SETBIT(sc, reg, x) \ 20650974Swpaul CSR_WRITE_4(sc, reg, \ 20750974Swpaul CSR_READ_4(sc, reg) | (x)) 20850974Swpaul 20950974Swpaul#define SIS_CLRBIT(sc, reg, x) \ 21050974Swpaul CSR_WRITE_4(sc, reg, \ 21150974Swpaul CSR_READ_4(sc, reg) & ~(x)) 21250974Swpaul 21350974Swpaul#define SIO_SET(x) \ 21450974Swpaul CSR_WRITE_4(sc, SIS_EECTL, CSR_READ_4(sc, SIS_EECTL) | x) 21550974Swpaul 21650974Swpaul#define SIO_CLR(x) \ 21750974Swpaul CSR_WRITE_4(sc, SIS_EECTL, CSR_READ_4(sc, SIS_EECTL) & ~x) 21850974Swpaul 21981713Swpaulstatic void 22081713Swpaulsis_dma_map_desc_next(arg, segs, nseg, error) 22181713Swpaul void *arg; 22281713Swpaul bus_dma_segment_t *segs; 22381713Swpaul int nseg, error; 22481713Swpaul{ 22581713Swpaul struct sis_desc *r; 22681713Swpaul 22781713Swpaul r = arg; 22881713Swpaul r->sis_next = segs->ds_addr; 22981713Swpaul 23081713Swpaul return; 23181713Swpaul} 23281713Swpaul 23381713Swpaulstatic void 23481713Swpaulsis_dma_map_desc_ptr(arg, segs, nseg, error) 23581713Swpaul void *arg; 23681713Swpaul bus_dma_segment_t *segs; 23781713Swpaul int nseg, error; 23881713Swpaul{ 23981713Swpaul struct sis_desc *r; 24081713Swpaul 24181713Swpaul r = arg; 24281713Swpaul r->sis_ptr = segs->ds_addr; 24381713Swpaul 24481713Swpaul return; 24581713Swpaul} 24681713Swpaul 24781713Swpaulstatic void 24881713Swpaulsis_dma_map_ring(arg, segs, nseg, error) 24981713Swpaul void *arg; 25081713Swpaul bus_dma_segment_t *segs; 25181713Swpaul int nseg, error; 25281713Swpaul{ 25381713Swpaul u_int32_t *p; 25481713Swpaul 25581713Swpaul p = arg; 25681713Swpaul *p = segs->ds_addr; 25781713Swpaul 25881713Swpaul return; 25981713Swpaul} 26081713Swpaul 26162672Swpaul/* 26262672Swpaul * Routine to reverse the bits in a word. Stolen almost 26362672Swpaul * verbatim from /usr/games/fortune. 26462672Swpaul */ 265102334Salfredstatic u_int16_t 266102334Salfredsis_reverse(n) 26762672Swpaul u_int16_t n; 26862672Swpaul{ 26962672Swpaul n = ((n >> 1) & 0x5555) | ((n << 1) & 0xaaaa); 27062672Swpaul n = ((n >> 2) & 0x3333) | ((n << 2) & 0xcccc); 27162672Swpaul n = ((n >> 4) & 0x0f0f) | ((n << 4) & 0xf0f0); 27262672Swpaul n = ((n >> 8) & 0x00ff) | ((n << 8) & 0xff00); 27362672Swpaul 27462672Swpaul return(n); 27562672Swpaul} 27662672Swpaul 277102334Salfredstatic void 278102334Salfredsis_delay(sc) 27950974Swpaul struct sis_softc *sc; 28050974Swpaul{ 28150974Swpaul int idx; 28250974Swpaul 28350974Swpaul for (idx = (300 / 33) + 1; idx > 0; idx--) 28450974Swpaul CSR_READ_4(sc, SIS_CSR); 28550974Swpaul 28650974Swpaul return; 28750974Swpaul} 28850974Swpaul 289102334Salfredstatic void 290102334Salfredsis_eeprom_idle(sc) 29150974Swpaul struct sis_softc *sc; 29250974Swpaul{ 29350974Swpaul register int i; 29450974Swpaul 29550974Swpaul SIO_SET(SIS_EECTL_CSEL); 29650974Swpaul sis_delay(sc); 29750974Swpaul SIO_SET(SIS_EECTL_CLK); 29850974Swpaul sis_delay(sc); 29950974Swpaul 30050974Swpaul for (i = 0; i < 25; i++) { 30150974Swpaul SIO_CLR(SIS_EECTL_CLK); 30250974Swpaul sis_delay(sc); 30350974Swpaul SIO_SET(SIS_EECTL_CLK); 30450974Swpaul sis_delay(sc); 30550974Swpaul } 30650974Swpaul 30750974Swpaul SIO_CLR(SIS_EECTL_CLK); 30850974Swpaul sis_delay(sc); 30950974Swpaul SIO_CLR(SIS_EECTL_CSEL); 31050974Swpaul sis_delay(sc); 31150974Swpaul CSR_WRITE_4(sc, SIS_EECTL, 0x00000000); 31250974Swpaul 31350974Swpaul return; 31450974Swpaul} 31550974Swpaul 31650974Swpaul/* 31750974Swpaul * Send a read command and address to the EEPROM, check for ACK. 31850974Swpaul */ 319102334Salfredstatic void 320102334Salfredsis_eeprom_putbyte(sc, addr) 32150974Swpaul struct sis_softc *sc; 32250974Swpaul int addr; 32350974Swpaul{ 32450974Swpaul register int d, i; 32550974Swpaul 32650974Swpaul d = addr | SIS_EECMD_READ; 32750974Swpaul 32850974Swpaul /* 32950974Swpaul * Feed in each bit and stobe the clock. 33050974Swpaul */ 33150974Swpaul for (i = 0x400; i; i >>= 1) { 33250974Swpaul if (d & i) { 33350974Swpaul SIO_SET(SIS_EECTL_DIN); 33450974Swpaul } else { 33550974Swpaul SIO_CLR(SIS_EECTL_DIN); 33650974Swpaul } 33750974Swpaul sis_delay(sc); 33850974Swpaul SIO_SET(SIS_EECTL_CLK); 33950974Swpaul sis_delay(sc); 34050974Swpaul SIO_CLR(SIS_EECTL_CLK); 34150974Swpaul sis_delay(sc); 34250974Swpaul } 34350974Swpaul 34450974Swpaul return; 34550974Swpaul} 34650974Swpaul 34750974Swpaul/* 34850974Swpaul * Read a word of data stored in the EEPROM at address 'addr.' 34950974Swpaul */ 350102334Salfredstatic void 351102334Salfredsis_eeprom_getword(sc, addr, dest) 35250974Swpaul struct sis_softc *sc; 35350974Swpaul int addr; 35450974Swpaul u_int16_t *dest; 35550974Swpaul{ 35650974Swpaul register int i; 35750974Swpaul u_int16_t word = 0; 35850974Swpaul 35950974Swpaul /* Force EEPROM to idle state. */ 36050974Swpaul sis_eeprom_idle(sc); 36150974Swpaul 36250974Swpaul /* Enter EEPROM access mode. */ 36350974Swpaul sis_delay(sc); 36462672Swpaul SIO_CLR(SIS_EECTL_CLK); 36562672Swpaul sis_delay(sc); 36650974Swpaul SIO_SET(SIS_EECTL_CSEL); 36750974Swpaul sis_delay(sc); 36850974Swpaul 36950974Swpaul /* 37050974Swpaul * Send address of word we want to read. 37150974Swpaul */ 37250974Swpaul sis_eeprom_putbyte(sc, addr); 37350974Swpaul 37450974Swpaul /* 37550974Swpaul * Start reading bits from EEPROM. 37650974Swpaul */ 37750974Swpaul for (i = 0x8000; i; i >>= 1) { 37850974Swpaul SIO_SET(SIS_EECTL_CLK); 37950974Swpaul sis_delay(sc); 38050974Swpaul if (CSR_READ_4(sc, SIS_EECTL) & SIS_EECTL_DOUT) 38150974Swpaul word |= i; 38250974Swpaul sis_delay(sc); 38350974Swpaul SIO_CLR(SIS_EECTL_CLK); 38450974Swpaul sis_delay(sc); 38550974Swpaul } 38650974Swpaul 38750974Swpaul /* Turn off EEPROM access mode. */ 38850974Swpaul sis_eeprom_idle(sc); 38950974Swpaul 39050974Swpaul *dest = word; 39150974Swpaul 39250974Swpaul return; 39350974Swpaul} 39450974Swpaul 39550974Swpaul/* 39650974Swpaul * Read a sequence of words from the EEPROM. 39750974Swpaul */ 398102334Salfredstatic void 399102334Salfredsis_read_eeprom(sc, dest, off, cnt, swap) 40050974Swpaul struct sis_softc *sc; 40150974Swpaul caddr_t dest; 40250974Swpaul int off; 40350974Swpaul int cnt; 40450974Swpaul int swap; 40550974Swpaul{ 40650974Swpaul int i; 40750974Swpaul u_int16_t word = 0, *ptr; 40850974Swpaul 40950974Swpaul for (i = 0; i < cnt; i++) { 41050974Swpaul sis_eeprom_getword(sc, off + i, &word); 41150974Swpaul ptr = (u_int16_t *)(dest + (i * 2)); 41250974Swpaul if (swap) 41350974Swpaul *ptr = ntohs(word); 41450974Swpaul else 41550974Swpaul *ptr = word; 41650974Swpaul } 41750974Swpaul 41850974Swpaul return; 41950974Swpaul} 42050974Swpaul 42172197Swpaul#ifdef __i386__ 422102334Salfredstatic device_t 423102334Salfredsis_find_bridge(dev) 42472197Swpaul device_t dev; 42572197Swpaul{ 42672197Swpaul devclass_t pci_devclass; 42772197Swpaul device_t *pci_devices; 42872197Swpaul int pci_count = 0; 42972197Swpaul device_t *pci_children; 43072197Swpaul int pci_childcount = 0; 43172197Swpaul device_t *busp, *childp; 43287994Sarchie device_t child = NULL; 43372197Swpaul int i, j; 43472197Swpaul 43572197Swpaul if ((pci_devclass = devclass_find("pci")) == NULL) 43672197Swpaul return(NULL); 43772197Swpaul 43872197Swpaul devclass_get_devices(pci_devclass, &pci_devices, &pci_count); 43972197Swpaul 44072197Swpaul for (i = 0, busp = pci_devices; i < pci_count; i++, busp++) { 44172197Swpaul pci_childcount = 0; 44272197Swpaul device_get_children(*busp, &pci_children, &pci_childcount); 44372197Swpaul for (j = 0, childp = pci_children; 44472197Swpaul j < pci_childcount; j++, childp++) { 44572197Swpaul if (pci_get_vendor(*childp) == SIS_VENDORID && 44672197Swpaul pci_get_device(*childp) == 0x0008) { 44787994Sarchie child = *childp; 44887994Sarchie goto done; 44972197Swpaul } 45072197Swpaul } 45172197Swpaul } 45272197Swpaul 45387994Sarchiedone: 45472197Swpaul free(pci_devices, M_TEMP); 45572197Swpaul free(pci_children, M_TEMP); 45687994Sarchie return(child); 45772197Swpaul} 45872197Swpaul 459102334Salfredstatic void 460102334Salfredsis_read_cmos(sc, dev, dest, off, cnt) 46172197Swpaul struct sis_softc *sc; 46272197Swpaul device_t dev; 46372197Swpaul caddr_t dest; 46472197Swpaul int off; 46572197Swpaul int cnt; 46672197Swpaul{ 46772197Swpaul device_t bridge; 46872197Swpaul u_int8_t reg; 46972197Swpaul int i; 47072197Swpaul bus_space_tag_t btag; 47172197Swpaul 47272197Swpaul bridge = sis_find_bridge(dev); 47372197Swpaul if (bridge == NULL) 47472197Swpaul return; 47572197Swpaul reg = pci_read_config(bridge, 0x48, 1); 47672197Swpaul pci_write_config(bridge, 0x48, reg|0x40, 1); 47772197Swpaul 47872197Swpaul /* XXX */ 47972197Swpaul btag = I386_BUS_SPACE_IO; 48072197Swpaul 48172197Swpaul for (i = 0; i < cnt; i++) { 48272197Swpaul bus_space_write_1(btag, 0x0, 0x70, i + off); 48372197Swpaul *(dest + i) = bus_space_read_1(btag, 0x0, 0x71); 48472197Swpaul } 48572197Swpaul 48672197Swpaul pci_write_config(bridge, 0x48, reg & ~0x40, 1); 48772197Swpaul return; 48872197Swpaul} 48989296Swpaul 490102334Salfredstatic void 491102334Salfredsis_read_mac(sc, dev, dest) 49289296Swpaul struct sis_softc *sc; 49389296Swpaul device_t dev; 49489296Swpaul caddr_t dest; 49589296Swpaul{ 49689296Swpaul u_int32_t filtsave, csrsave; 49789296Swpaul 49889296Swpaul filtsave = CSR_READ_4(sc, SIS_RXFILT_CTL); 49989296Swpaul csrsave = CSR_READ_4(sc, SIS_CSR); 50089296Swpaul 50189296Swpaul CSR_WRITE_4(sc, SIS_CSR, SIS_CSR_RELOAD | filtsave); 50289296Swpaul CSR_WRITE_4(sc, SIS_CSR, 0); 50389296Swpaul 50489296Swpaul CSR_WRITE_4(sc, SIS_RXFILT_CTL, filtsave & ~SIS_RXFILTCTL_ENABLE); 50589296Swpaul 50689296Swpaul CSR_WRITE_4(sc, SIS_RXFILT_CTL, SIS_FILTADDR_PAR0); 50789296Swpaul ((u_int16_t *)dest)[0] = CSR_READ_2(sc, SIS_RXFILT_DATA); 50889296Swpaul CSR_WRITE_4(sc, SIS_RXFILT_CTL,SIS_FILTADDR_PAR1); 50989296Swpaul ((u_int16_t *)dest)[1] = CSR_READ_2(sc, SIS_RXFILT_DATA); 51089296Swpaul CSR_WRITE_4(sc, SIS_RXFILT_CTL, SIS_FILTADDR_PAR2); 51189296Swpaul ((u_int16_t *)dest)[2] = CSR_READ_2(sc, SIS_RXFILT_DATA); 51289296Swpaul 51389296Swpaul CSR_WRITE_4(sc, SIS_RXFILT_CTL, filtsave); 51489296Swpaul CSR_WRITE_4(sc, SIS_CSR, csrsave); 51589296Swpaul return; 51689296Swpaul} 51772197Swpaul#endif 51872197Swpaul 519109060Smbr/* 520109060Smbr * Sync the PHYs by setting data bit and strobing the clock 32 times. 521109060Smbr */ 522109060Smbrstatic void sis_mii_sync(sc) 523109060Smbr struct sis_softc *sc; 524109060Smbr{ 525109060Smbr register int i; 526109060Smbr 527109060Smbr SIO_SET(SIS_MII_DIR|SIS_MII_DATA); 528109060Smbr 529109060Smbr for (i = 0; i < 32; i++) { 530109060Smbr SIO_SET(SIS_MII_CLK); 531109060Smbr DELAY(1); 532109060Smbr SIO_CLR(SIS_MII_CLK); 533109060Smbr DELAY(1); 534109060Smbr } 535109060Smbr 536109060Smbr return; 537109060Smbr} 538109060Smbr 539109060Smbr/* 540109060Smbr * Clock a series of bits through the MII. 541109060Smbr */ 542109060Smbrstatic void sis_mii_send(sc, bits, cnt) 543109060Smbr struct sis_softc *sc; 544109060Smbr u_int32_t bits; 545109060Smbr int cnt; 546109060Smbr{ 547109060Smbr int i; 548109060Smbr 549109060Smbr SIO_CLR(SIS_MII_CLK); 550109060Smbr 551109060Smbr for (i = (0x1 << (cnt - 1)); i; i >>= 1) { 552109060Smbr if (bits & i) { 553109060Smbr SIO_SET(SIS_MII_DATA); 554109060Smbr } else { 555109060Smbr SIO_CLR(SIS_MII_DATA); 556109060Smbr } 557109060Smbr DELAY(1); 558109060Smbr SIO_CLR(SIS_MII_CLK); 559109060Smbr DELAY(1); 560109060Smbr SIO_SET(SIS_MII_CLK); 561109060Smbr } 562109060Smbr} 563109060Smbr 564109060Smbr/* 565109060Smbr * Read an PHY register through the MII. 566109060Smbr */ 567109060Smbrstatic int sis_mii_readreg(sc, frame) 568109060Smbr struct sis_softc *sc; 569109060Smbr struct sis_mii_frame *frame; 570109060Smbr 571109060Smbr{ 572109060Smbr int i, ack, s; 573109060Smbr 574109060Smbr s = splimp(); 575109060Smbr 576109060Smbr /* 577109060Smbr * Set up frame for RX. 578109060Smbr */ 579109060Smbr frame->mii_stdelim = SIS_MII_STARTDELIM; 580109060Smbr frame->mii_opcode = SIS_MII_READOP; 581109060Smbr frame->mii_turnaround = 0; 582109060Smbr frame->mii_data = 0; 583109060Smbr 584109060Smbr /* 585109060Smbr * Turn on data xmit. 586109060Smbr */ 587109060Smbr SIO_SET(SIS_MII_DIR); 588109060Smbr 589109060Smbr sis_mii_sync(sc); 590109060Smbr 591109060Smbr /* 592109060Smbr * Send command/address info. 593109060Smbr */ 594109060Smbr sis_mii_send(sc, frame->mii_stdelim, 2); 595109060Smbr sis_mii_send(sc, frame->mii_opcode, 2); 596109060Smbr sis_mii_send(sc, frame->mii_phyaddr, 5); 597109060Smbr sis_mii_send(sc, frame->mii_regaddr, 5); 598109060Smbr 599109060Smbr /* Idle bit */ 600109060Smbr SIO_CLR((SIS_MII_CLK|SIS_MII_DATA)); 601109060Smbr DELAY(1); 602109060Smbr SIO_SET(SIS_MII_CLK); 603109060Smbr DELAY(1); 604109060Smbr 605109060Smbr /* Turn off xmit. */ 606109060Smbr SIO_CLR(SIS_MII_DIR); 607109060Smbr 608109060Smbr /* Check for ack */ 609109060Smbr SIO_CLR(SIS_MII_CLK); 610109060Smbr DELAY(1); 611109060Smbr ack = CSR_READ_4(sc, SIS_EECTL) & SIS_MII_DATA; 612109060Smbr SIO_SET(SIS_MII_CLK); 613109060Smbr DELAY(1); 614109060Smbr 615109060Smbr /* 616109060Smbr * Now try reading data bits. If the ack failed, we still 617109060Smbr * need to clock through 16 cycles to keep the PHY(s) in sync. 618109060Smbr */ 619109060Smbr if (ack) { 620109060Smbr for(i = 0; i < 16; i++) { 621109060Smbr SIO_CLR(SIS_MII_CLK); 622109060Smbr DELAY(1); 623109060Smbr SIO_SET(SIS_MII_CLK); 624109060Smbr DELAY(1); 625109060Smbr } 626109060Smbr goto fail; 627109060Smbr } 628109060Smbr 629109060Smbr for (i = 0x8000; i; i >>= 1) { 630109060Smbr SIO_CLR(SIS_MII_CLK); 631109060Smbr DELAY(1); 632109060Smbr if (!ack) { 633109060Smbr if (CSR_READ_4(sc, SIS_EECTL) & SIS_MII_DATA) 634109060Smbr frame->mii_data |= i; 635109060Smbr DELAY(1); 636109060Smbr } 637109060Smbr SIO_SET(SIS_MII_CLK); 638109060Smbr DELAY(1); 639109060Smbr } 640109060Smbr 641109060Smbrfail: 642109060Smbr 643109060Smbr SIO_CLR(SIS_MII_CLK); 644109060Smbr DELAY(1); 645109060Smbr SIO_SET(SIS_MII_CLK); 646109060Smbr DELAY(1); 647109060Smbr 648109060Smbr splx(s); 649109060Smbr 650109060Smbr if (ack) 651109060Smbr return(1); 652109060Smbr return(0); 653109060Smbr} 654109060Smbr 655109060Smbr/* 656109060Smbr * Write to a PHY register through the MII. 657109060Smbr */ 658109060Smbrstatic int sis_mii_writereg(sc, frame) 659109060Smbr struct sis_softc *sc; 660109060Smbr struct sis_mii_frame *frame; 661109060Smbr 662109060Smbr{ 663109060Smbr int s; 664109060Smbr 665109060Smbr s = splimp(); 666109060Smbr /* 667109060Smbr * Set up frame for TX. 668109060Smbr */ 669109060Smbr 670109060Smbr frame->mii_stdelim = SIS_MII_STARTDELIM; 671109060Smbr frame->mii_opcode = SIS_MII_WRITEOP; 672109060Smbr frame->mii_turnaround = SIS_MII_TURNAROUND; 673109060Smbr 674109060Smbr /* 675109060Smbr * Turn on data output. 676109060Smbr */ 677109060Smbr SIO_SET(SIS_MII_DIR); 678109060Smbr 679109060Smbr sis_mii_sync(sc); 680109060Smbr 681109060Smbr sis_mii_send(sc, frame->mii_stdelim, 2); 682109060Smbr sis_mii_send(sc, frame->mii_opcode, 2); 683109060Smbr sis_mii_send(sc, frame->mii_phyaddr, 5); 684109060Smbr sis_mii_send(sc, frame->mii_regaddr, 5); 685109060Smbr sis_mii_send(sc, frame->mii_turnaround, 2); 686109060Smbr sis_mii_send(sc, frame->mii_data, 16); 687109060Smbr 688109060Smbr /* Idle bit. */ 689109060Smbr SIO_SET(SIS_MII_CLK); 690109060Smbr DELAY(1); 691109060Smbr SIO_CLR(SIS_MII_CLK); 692109060Smbr DELAY(1); 693109060Smbr 694109060Smbr /* 695109060Smbr * Turn off xmit. 696109060Smbr */ 697109060Smbr SIO_CLR(SIS_MII_DIR); 698109060Smbr 699109060Smbr splx(s); 700109060Smbr 701109060Smbr return(0); 702109060Smbr} 703109060Smbr 704102334Salfredstatic int 705102334Salfredsis_miibus_readreg(dev, phy, reg) 70650974Swpaul device_t dev; 70750974Swpaul int phy, reg; 70850974Swpaul{ 70950974Swpaul struct sis_softc *sc; 710109060Smbr struct sis_mii_frame frame; 71150974Swpaul 71250974Swpaul sc = device_get_softc(dev); 71350974Swpaul 71462672Swpaul if (sc->sis_type == SIS_TYPE_83815) { 71562672Swpaul if (phy != 0) 71662672Swpaul return(0); 71762672Swpaul /* 71862672Swpaul * The NatSemi chip can take a while after 71962672Swpaul * a reset to come ready, during which the BMSR 72062672Swpaul * returns a value of 0. This is *never* supposed 72162672Swpaul * to happen: some of the BMSR bits are meant to 72262672Swpaul * be hardwired in the on position, and this can 72362672Swpaul * confuse the miibus code a bit during the probe 72462672Swpaul * and attach phase. So we make an effort to check 72562672Swpaul * for this condition and wait for it to clear. 72662672Swpaul */ 72762672Swpaul if (!CSR_READ_4(sc, NS_BMSR)) 72862672Swpaul DELAY(1000); 729109060Smbr return CSR_READ_4(sc, NS_BMCR + (reg * 4)); 73062672Swpaul } 73162672Swpaul 732109976Smbr /* 733109976Smbr * Chipsets < SIS_635 seem not to be able to read/write 734109976Smbr * through mdio. Use the enhanced PHY access register 735109976Smbr * again for them. 736109976Smbr */ 73789296Swpaul if (sc->sis_type == SIS_TYPE_900 && 738109976Smbr sc->sis_rev < SIS_REV_635) { 739109976Smbr int i, val = 0; 74050974Swpaul 741109976Smbr if (phy != 0) 742109976Smbr return(0); 74350974Swpaul 744109976Smbr CSR_WRITE_4(sc, SIS_PHYCTL, 745109976Smbr (phy << 11) | (reg << 6) | SIS_PHYOP_READ); 746109976Smbr SIS_SETBIT(sc, SIS_PHYCTL, SIS_PHYCTL_ACCESS); 74750974Swpaul 748109976Smbr for (i = 0; i < SIS_TIMEOUT; i++) { 749109976Smbr if (!(CSR_READ_4(sc, SIS_PHYCTL) & SIS_PHYCTL_ACCESS)) 750109976Smbr break; 751109976Smbr } 752109976Smbr 753109976Smbr if (i == SIS_TIMEOUT) { 754109976Smbr printf("sis%d: PHY failed to come ready\n", 755109976Smbr sc->sis_unit); 756109976Smbr return(0); 757109976Smbr } 758109976Smbr 759109976Smbr val = (CSR_READ_4(sc, SIS_PHYCTL) >> 16) & 0xFFFF; 760109976Smbr 761109976Smbr if (val == 0xFFFF) 762109976Smbr return(0); 763109976Smbr 764109976Smbr return(val); 765109976Smbr } else { 766109976Smbr bzero((char *)&frame, sizeof(frame)); 767109976Smbr 768109976Smbr frame.mii_phyaddr = phy; 769109976Smbr frame.mii_regaddr = reg; 770109976Smbr sis_mii_readreg(sc, &frame); 771109976Smbr 772109976Smbr return(frame.mii_data); 773109976Smbr } 77450974Swpaul} 77550974Swpaul 776102334Salfredstatic int 777102334Salfredsis_miibus_writereg(dev, phy, reg, data) 77850974Swpaul device_t dev; 77950974Swpaul int phy, reg, data; 78050974Swpaul{ 78150974Swpaul struct sis_softc *sc; 782109060Smbr struct sis_mii_frame frame; 78350974Swpaul 78450974Swpaul sc = device_get_softc(dev); 78550974Swpaul 78662672Swpaul if (sc->sis_type == SIS_TYPE_83815) { 78762672Swpaul if (phy != 0) 78862672Swpaul return(0); 78962672Swpaul CSR_WRITE_4(sc, NS_BMCR + (reg * 4), data); 79062672Swpaul return(0); 79162672Swpaul } 79262672Swpaul 793109976Smbr /* 794109976Smbr * Chipsets < SIS_635 seem not to be able to read/write 795109976Smbr * through mdio. Use the enhanced PHY access register 796109976Smbr * again for them. 797109976Smbr */ 798109976Smbr if (sc->sis_type == SIS_TYPE_900 && 799109976Smbr sc->sis_rev < SIS_REV_635) { 800109976Smbr int i; 80150974Swpaul 802109976Smbr if (phy != 0) 803109976Smbr return(0); 80450974Swpaul 805109976Smbr CSR_WRITE_4(sc, SIS_PHYCTL, (data << 16) | (phy << 11) | 806109976Smbr (reg << 6) | SIS_PHYOP_WRITE); 807109976Smbr SIS_SETBIT(sc, SIS_PHYCTL, SIS_PHYCTL_ACCESS); 80850974Swpaul 809109976Smbr for (i = 0; i < SIS_TIMEOUT; i++) { 810109976Smbr if (!(CSR_READ_4(sc, SIS_PHYCTL) & SIS_PHYCTL_ACCESS)) 811109976Smbr break; 812109976Smbr } 81350974Swpaul 814109976Smbr if (i == SIS_TIMEOUT) 815109976Smbr printf("sis%d: PHY failed to come ready\n", 816109976Smbr sc->sis_unit); 817109976Smbr } else { 818109976Smbr bzero((char *)&frame, sizeof(frame)); 819109976Smbr 820109976Smbr frame.mii_phyaddr = phy; 821109976Smbr frame.mii_regaddr = reg; 822109976Smbr frame.mii_data = data; 823109976Smbr sis_mii_writereg(sc, &frame); 824109976Smbr } 82550974Swpaul return(0); 82650974Swpaul} 82750974Swpaul 828102334Salfredstatic void 829102334Salfredsis_miibus_statchg(dev) 83050974Swpaul device_t dev; 83150974Swpaul{ 83250974Swpaul struct sis_softc *sc; 83350974Swpaul 83450974Swpaul sc = device_get_softc(dev); 83564963Swpaul sis_init(sc); 83650974Swpaul 83750974Swpaul return; 83850974Swpaul} 83950974Swpaul 840102334Salfredstatic u_int32_t 841102334Salfredsis_crc(sc, addr) 84262672Swpaul struct sis_softc *sc; 84350974Swpaul caddr_t addr; 84450974Swpaul{ 84550974Swpaul u_int32_t crc, carry; 84650974Swpaul int i, j; 84750974Swpaul u_int8_t c; 84850974Swpaul 84950974Swpaul /* Compute CRC for the address value. */ 85050974Swpaul crc = 0xFFFFFFFF; /* initial value */ 85150974Swpaul 85250974Swpaul for (i = 0; i < 6; i++) { 85350974Swpaul c = *(addr + i); 85450974Swpaul for (j = 0; j < 8; j++) { 85550974Swpaul carry = ((crc & 0x80000000) ? 1 : 0) ^ (c & 0x01); 85650974Swpaul crc <<= 1; 85750974Swpaul c >>= 1; 85850974Swpaul if (carry) 85950974Swpaul crc = (crc ^ 0x04c11db6) | carry; 86050974Swpaul } 86150974Swpaul } 86250974Swpaul 86362672Swpaul /* 86462672Swpaul * return the filter bit position 86562672Swpaul * 86662672Swpaul * The NatSemi chip has a 512-bit filter, which is 86762672Swpaul * different than the SiS, so we special-case it. 86862672Swpaul */ 86962672Swpaul if (sc->sis_type == SIS_TYPE_83815) 870109060Smbr return (crc >> 23); 871109976Smbr else if (sc->sis_rev >= SIS_REV_635 || 872109976Smbr sc->sis_rev == SIS_REV_900B) 873109060Smbr return (crc >> 24); 874109976Smbr else 875109976Smbr return (crc >> 25); 87650974Swpaul} 87750974Swpaul 878102334Salfredstatic void 879102334Salfredsis_setmulti_ns(sc) 88050974Swpaul struct sis_softc *sc; 88150974Swpaul{ 88250974Swpaul struct ifnet *ifp; 88350974Swpaul struct ifmultiaddr *ifma; 88450974Swpaul u_int32_t h = 0, i, filtsave; 88562672Swpaul int bit, index; 88650974Swpaul 88750974Swpaul ifp = &sc->arpcom.ac_if; 88850974Swpaul 88950974Swpaul if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 89062672Swpaul SIS_CLRBIT(sc, SIS_RXFILT_CTL, NS_RXFILTCTL_MCHASH); 89150974Swpaul SIS_SETBIT(sc, SIS_RXFILT_CTL, SIS_RXFILTCTL_ALLMULTI); 89250974Swpaul return; 89350974Swpaul } 89450974Swpaul 89562672Swpaul /* 89662672Swpaul * We have to explicitly enable the multicast hash table 89762672Swpaul * on the NatSemi chip if we want to use it, which we do. 89862672Swpaul */ 89962672Swpaul SIS_SETBIT(sc, SIS_RXFILT_CTL, NS_RXFILTCTL_MCHASH); 90050974Swpaul SIS_CLRBIT(sc, SIS_RXFILT_CTL, SIS_RXFILTCTL_ALLMULTI); 90150974Swpaul 90250974Swpaul filtsave = CSR_READ_4(sc, SIS_RXFILT_CTL); 90350974Swpaul 90450974Swpaul /* first, zot all the existing hash bits */ 90562672Swpaul for (i = 0; i < 32; i++) { 90662672Swpaul CSR_WRITE_4(sc, SIS_RXFILT_CTL, NS_FILTADDR_FMEM_LO + (i*2)); 90762672Swpaul CSR_WRITE_4(sc, SIS_RXFILT_DATA, 0); 90862672Swpaul } 90962672Swpaul 91072084Sphk TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 91162672Swpaul if (ifma->ifma_addr->sa_family != AF_LINK) 91262672Swpaul continue; 91362672Swpaul h = sis_crc(sc, LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 91462672Swpaul index = h >> 3; 91562672Swpaul bit = h & 0x1F; 91662672Swpaul CSR_WRITE_4(sc, SIS_RXFILT_CTL, NS_FILTADDR_FMEM_LO + index); 91762672Swpaul if (bit > 0xF) 91862672Swpaul bit -= 0x10; 91962672Swpaul SIS_SETBIT(sc, SIS_RXFILT_DATA, (1 << bit)); 92062672Swpaul } 92162672Swpaul 92262672Swpaul CSR_WRITE_4(sc, SIS_RXFILT_CTL, filtsave); 92362672Swpaul 92462672Swpaul return; 92562672Swpaul} 92662672Swpaul 927102334Salfredstatic void 928102334Salfredsis_setmulti_sis(sc) 92962672Swpaul struct sis_softc *sc; 93062672Swpaul{ 93162672Swpaul struct ifnet *ifp; 93262672Swpaul struct ifmultiaddr *ifma; 933109060Smbr u_int32_t h, i, n, ctl; 934109060Smbr u_int16_t hashes[16]; 93562672Swpaul 93662672Swpaul ifp = &sc->arpcom.ac_if; 93762672Swpaul 938109060Smbr /* hash table size */ 939109976Smbr if (sc->sis_rev >= SIS_REV_635 || 940109976Smbr sc->sis_rev == SIS_REV_900B) 941109976Smbr n = 16; 942109976Smbr else 943109976Smbr n = 8; 94462672Swpaul 945109060Smbr ctl = CSR_READ_4(sc, SIS_RXFILT_CTL) & SIS_RXFILTCTL_ENABLE; 94662672Swpaul 947109060Smbr if (ifp->if_flags & IFF_BROADCAST) 948109060Smbr ctl |= SIS_RXFILTCTL_BROAD; 94962672Swpaul 950109060Smbr if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 951109060Smbr ctl |= SIS_RXFILTCTL_ALLMULTI; 952109060Smbr if (ifp->if_flags & IFF_PROMISC) 953109060Smbr ctl |= SIS_RXFILTCTL_BROAD|SIS_RXFILTCTL_ALLPHYS; 954109060Smbr for (i = 0; i < n; i++) 955109060Smbr hashes[i] = ~0; 956109060Smbr } else { 957109060Smbr for (i = 0; i < n; i++) 958109060Smbr hashes[i] = 0; 959109060Smbr i = 0; 960109060Smbr TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 961109060Smbr if (ifma->ifma_addr->sa_family != AF_LINK) 962109060Smbr continue; 963109060Smbr h = sis_crc(sc, 964109060Smbr LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 965109060Smbr hashes[h >> 4] |= 1 << (h & 0xf); 966109060Smbr i++; 967109060Smbr } 968109060Smbr if (i > n) { 969109060Smbr ctl |= SIS_RXFILTCTL_ALLMULTI; 970109060Smbr for (i = 0; i < n; i++) 971109060Smbr hashes[i] = ~0; 972109060Smbr } 97350974Swpaul } 97450974Swpaul 975109060Smbr for (i = 0; i < n; i++) { 976109060Smbr CSR_WRITE_4(sc, SIS_RXFILT_CTL, (4 + i) << 16); 977109060Smbr CSR_WRITE_4(sc, SIS_RXFILT_DATA, hashes[i]); 97850974Swpaul } 97950974Swpaul 980109060Smbr CSR_WRITE_4(sc, SIS_RXFILT_CTL, ctl); 98150974Swpaul} 98250974Swpaul 983102334Salfredstatic void 984102334Salfredsis_reset(sc) 98550974Swpaul struct sis_softc *sc; 98650974Swpaul{ 98750974Swpaul register int i; 98850974Swpaul 98950974Swpaul SIS_SETBIT(sc, SIS_CSR, SIS_CSR_RESET); 99050974Swpaul 99150974Swpaul for (i = 0; i < SIS_TIMEOUT; i++) { 99250974Swpaul if (!(CSR_READ_4(sc, SIS_CSR) & SIS_CSR_RESET)) 99350974Swpaul break; 99450974Swpaul } 99550974Swpaul 99650974Swpaul if (i == SIS_TIMEOUT) 99750974Swpaul printf("sis%d: reset never completed\n", sc->sis_unit); 99850974Swpaul 99950974Swpaul /* Wait a little while for the chip to get its brains in order. */ 100050974Swpaul DELAY(1000); 100172813Swpaul 100272813Swpaul /* 100372813Swpaul * If this is a NetSemi chip, make sure to clear 100472813Swpaul * PME mode. 100572813Swpaul */ 100672813Swpaul if (sc->sis_type == SIS_TYPE_83815) { 100772813Swpaul CSR_WRITE_4(sc, NS_CLKRUN, NS_CLKRUN_PMESTS); 100872813Swpaul CSR_WRITE_4(sc, NS_CLKRUN, 0); 100972813Swpaul } 101072813Swpaul 101150974Swpaul return; 101250974Swpaul} 101350974Swpaul 101450974Swpaul/* 101550974Swpaul * Probe for an SiS chip. Check the PCI vendor and device 101650974Swpaul * IDs against our list and return a device name if we find a match. 101750974Swpaul */ 1018102334Salfredstatic int 1019102334Salfredsis_probe(dev) 102050974Swpaul device_t dev; 102150974Swpaul{ 102250974Swpaul struct sis_type *t; 102350974Swpaul 102450974Swpaul t = sis_devs; 102550974Swpaul 102650974Swpaul while(t->sis_name != NULL) { 102750974Swpaul if ((pci_get_vendor(dev) == t->sis_vid) && 102850974Swpaul (pci_get_device(dev) == t->sis_did)) { 102950974Swpaul device_set_desc(dev, t->sis_name); 103050974Swpaul return(0); 103150974Swpaul } 103250974Swpaul t++; 103350974Swpaul } 103450974Swpaul 103550974Swpaul return(ENXIO); 103650974Swpaul} 103750974Swpaul 103850974Swpaul/* 103950974Swpaul * Attach the interface. Allocate softc structures, do ifmedia 104050974Swpaul * setup and ethernet/BPF attach. 104150974Swpaul */ 1042102334Salfredstatic int 1043102334Salfredsis_attach(dev) 104450974Swpaul device_t dev; 104550974Swpaul{ 104650974Swpaul u_char eaddr[ETHER_ADDR_LEN]; 104750974Swpaul struct sis_softc *sc; 104850974Swpaul struct ifnet *ifp; 1049109061Smbr int unit, error = 0, rid, waittime = 0; 105050974Swpaul 1051109061Smbr waittime = 0; 105250974Swpaul sc = device_get_softc(dev); 105350974Swpaul unit = device_get_unit(dev); 105450974Swpaul 1055119712Sphk sc->sis_self = dev; 1056119712Sphk 105793818Sjhb mtx_init(&sc->sis_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 105893818Sjhb MTX_DEF | MTX_RECURSE); 105969583Swpaul 106050974Swpaul if (pci_get_device(dev) == SIS_DEVICEID_900) 106150974Swpaul sc->sis_type = SIS_TYPE_900; 106250974Swpaul if (pci_get_device(dev) == SIS_DEVICEID_7016) 106350974Swpaul sc->sis_type = SIS_TYPE_7016; 106462672Swpaul if (pci_get_vendor(dev) == NS_VENDORID) 106562672Swpaul sc->sis_type = SIS_TYPE_83815; 106650974Swpaul 106789296Swpaul sc->sis_rev = pci_read_config(dev, PCIR_REVID, 1); 1068117208Simp#ifndef BURN_BRIDGES 106950974Swpaul /* 107050974Swpaul * Handle power management nonsense. 107150974Swpaul */ 107272813Swpaul if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 107372813Swpaul u_int32_t iobase, membase, irq; 107450974Swpaul 107572813Swpaul /* Save important PCI config data. */ 107672813Swpaul iobase = pci_read_config(dev, SIS_PCI_LOIO, 4); 107772813Swpaul membase = pci_read_config(dev, SIS_PCI_LOMEM, 4); 107872813Swpaul irq = pci_read_config(dev, SIS_PCI_INTLINE, 4); 107950974Swpaul 108072813Swpaul /* Reset the power state. */ 108172813Swpaul printf("sis%d: chip is in D%d power mode " 108272813Swpaul "-- setting to D0\n", unit, 108372813Swpaul pci_get_powerstate(dev)); 108472813Swpaul pci_set_powerstate(dev, PCI_POWERSTATE_D0); 108550974Swpaul 108672813Swpaul /* Restore PCI config data. */ 108772813Swpaul pci_write_config(dev, SIS_PCI_LOIO, iobase, 4); 108872813Swpaul pci_write_config(dev, SIS_PCI_LOMEM, membase, 4); 108972813Swpaul pci_write_config(dev, SIS_PCI_INTLINE, irq, 4); 109050974Swpaul } 1091117208Simp#endif 109250974Swpaul /* 109350974Swpaul * Map control/status registers. 109450974Swpaul */ 109572813Swpaul pci_enable_busmaster(dev); 109650974Swpaul 109750974Swpaul rid = SIS_RID; 109850974Swpaul sc->sis_res = bus_alloc_resource(dev, SIS_RES, &rid, 109950974Swpaul 0, ~0, 1, RF_ACTIVE); 110050974Swpaul 110150974Swpaul if (sc->sis_res == NULL) { 110250974Swpaul printf("sis%d: couldn't map ports/memory\n", unit); 110350974Swpaul error = ENXIO; 110450974Swpaul goto fail; 110550974Swpaul } 110650974Swpaul 110750974Swpaul sc->sis_btag = rman_get_bustag(sc->sis_res); 110850974Swpaul sc->sis_bhandle = rman_get_bushandle(sc->sis_res); 110950974Swpaul 111050974Swpaul /* Allocate interrupt */ 111150974Swpaul rid = 0; 111250974Swpaul sc->sis_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1, 111350974Swpaul RF_SHAREABLE | RF_ACTIVE); 111450974Swpaul 111550974Swpaul if (sc->sis_irq == NULL) { 111650974Swpaul printf("sis%d: couldn't map interrupt\n", unit); 111750974Swpaul error = ENXIO; 111850974Swpaul goto fail; 111950974Swpaul } 112050974Swpaul 112150974Swpaul /* Reset the adapter. */ 112250974Swpaul sis_reset(sc); 112350974Swpaul 1124109976Smbr if (sc->sis_type == SIS_TYPE_900 && 1125109976Smbr (sc->sis_rev == SIS_REV_635 || 1126109976Smbr sc->sis_rev == SIS_REV_900B)) { 1127109976Smbr SIO_SET(SIS_CFG_RND_CNT); 1128109976Smbr SIO_SET(SIS_CFG_PERR_DETECT); 1129109976Smbr } 1130109976Smbr 113150974Swpaul /* 113250974Swpaul * Get station address from the EEPROM. 113350974Swpaul */ 113462672Swpaul switch (pci_get_vendor(dev)) { 113562672Swpaul case NS_VENDORID: 1136119712Sphk sc->sis_srr = CSR_READ_4(sc, NS_SRR); 1137119712Sphk 1138119712Sphk /* We can't update the device description, so spew */ 1139119712Sphk if (sc->sis_srr == NS_SRR_15C) 1140119712Sphk device_printf(dev, "Silicon Revision: DP83815C\n"); 1141119712Sphk else if (sc->sis_srr == NS_SRR_15D) 1142119712Sphk device_printf(dev, "Silicon Revision: DP83815D\n"); 1143119712Sphk else if (sc->sis_srr == NS_SRR_16A) 1144119712Sphk device_printf(dev, "Silicon Revision: DP83816A\n"); 1145119712Sphk else 1146119712Sphk device_printf(dev, "Silicon Revision %x\n", sc->sis_srr); 1147119712Sphk 114862672Swpaul /* 114962672Swpaul * Reading the MAC address out of the EEPROM on 115062672Swpaul * the NatSemi chip takes a bit more work than 115162672Swpaul * you'd expect. The address spans 4 16-bit words, 115262672Swpaul * with the first word containing only a single bit. 115362672Swpaul * You have to shift everything over one bit to 115462672Swpaul * get it aligned properly. Also, the bits are 115562672Swpaul * stored backwards (the LSB is really the MSB, 115662672Swpaul * and so on) so you have to reverse them in order 115762672Swpaul * to get the MAC address into the form we want. 115862672Swpaul * Why? Who the hell knows. 115962672Swpaul */ 116062672Swpaul { 116162672Swpaul u_int16_t tmp[4]; 116250974Swpaul 116362672Swpaul sis_read_eeprom(sc, (caddr_t)&tmp, 116462672Swpaul NS_EE_NODEADDR, 4, 0); 116562672Swpaul 116662672Swpaul /* Shift everything over one bit. */ 116762672Swpaul tmp[3] = tmp[3] >> 1; 116862681Swpaul tmp[3] |= tmp[2] << 15; 116962672Swpaul tmp[2] = tmp[2] >> 1; 117062681Swpaul tmp[2] |= tmp[1] << 15; 117162672Swpaul tmp[1] = tmp[1] >> 1; 117262681Swpaul tmp[1] |= tmp[0] << 15; 117362672Swpaul 117462672Swpaul /* Now reverse all the bits. */ 117562672Swpaul tmp[3] = sis_reverse(tmp[3]); 117662672Swpaul tmp[2] = sis_reverse(tmp[2]); 117762672Swpaul tmp[1] = sis_reverse(tmp[1]); 117862672Swpaul 117962672Swpaul bcopy((char *)&tmp[1], eaddr, ETHER_ADDR_LEN); 118062672Swpaul } 118162672Swpaul break; 118262672Swpaul case SIS_VENDORID: 118362672Swpaul default: 118472197Swpaul#ifdef __i386__ 118572197Swpaul /* 118672197Swpaul * If this is a SiS 630E chipset with an embedded 118772197Swpaul * SiS 900 controller, we have to read the MAC address 118872197Swpaul * from the APC CMOS RAM. Our method for doing this 118972197Swpaul * is very ugly since we have to reach out and grab 119072197Swpaul * ahold of hardware for which we cannot properly 119172197Swpaul * allocate resources. This code is only compiled on 119272197Swpaul * the i386 architecture since the SiS 630E chipset 119372197Swpaul * is for x86 motherboards only. Note that there are 119472197Swpaul * a lot of magic numbers in this hack. These are 119572197Swpaul * taken from SiS's Linux driver. I'd like to replace 119672197Swpaul * them with proper symbolic definitions, but that 119772197Swpaul * requires some datasheets that I don't have access 119872197Swpaul * to at the moment. 119972197Swpaul */ 120089296Swpaul if (sc->sis_rev == SIS_REV_630S || 120189296Swpaul sc->sis_rev == SIS_REV_630E || 120290328Sambrisko sc->sis_rev == SIS_REV_630EA1) 120372197Swpaul sis_read_cmos(sc, dev, (caddr_t)&eaddr, 0x9, 6); 120489296Swpaul 120590328Sambrisko else if (sc->sis_rev == SIS_REV_635 || 120690328Sambrisko sc->sis_rev == SIS_REV_630ET) 120789296Swpaul sis_read_mac(sc, dev, (caddr_t)&eaddr); 1208109061Smbr else if (sc->sis_rev == SIS_REV_96x) { 1209109061Smbr /* Allow to read EEPROM from LAN. It is shared 1210109061Smbr * between a 1394 controller and the NIC and each 1211109061Smbr * time we access it, we need to set SIS_EECMD_REQ. 1212109061Smbr */ 1213109061Smbr SIO_SET(SIS_EECMD_REQ); 1214109061Smbr for (waittime = 0; waittime < SIS_TIMEOUT; 1215109061Smbr waittime++) { 1216109061Smbr /* Force EEPROM to idle state. */ 1217109061Smbr sis_eeprom_idle(sc); 1218109061Smbr if (CSR_READ_4(sc, SIS_EECTL) & SIS_EECMD_GNT) { 1219109061Smbr sis_read_eeprom(sc, (caddr_t)&eaddr, 1220109061Smbr SIS_EE_NODEADDR, 3, 0); 1221109061Smbr break; 1222109061Smbr } 1223109061Smbr DELAY(1); 1224109061Smbr } 1225109061Smbr /* 1226109061Smbr * Set SIS_EECTL_CLK to high, so a other master 1227109061Smbr * can operate on the i2c bus. 1228109061Smbr */ 1229109061Smbr SIO_SET(SIS_EECTL_CLK); 1230109061Smbr /* Refuse EEPROM access by LAN */ 1231109061Smbr SIO_SET(SIS_EECMD_DONE); 1232109061Smbr } else 123372197Swpaul#endif 123472197Swpaul sis_read_eeprom(sc, (caddr_t)&eaddr, 123572197Swpaul SIS_EE_NODEADDR, 3, 0); 123662672Swpaul break; 123762672Swpaul } 123862672Swpaul 123950974Swpaul /* 124050974Swpaul * A SiS chip was detected. Inform the world. 124150974Swpaul */ 124250974Swpaul printf("sis%d: Ethernet address: %6D\n", unit, eaddr, ":"); 124350974Swpaul 124450974Swpaul sc->sis_unit = unit; 1245119785Ssam callout_init(&sc->sis_stat_ch, CALLOUT_MPSAFE); 124650974Swpaul bcopy(eaddr, (char *)&sc->arpcom.ac_enaddr, ETHER_ADDR_LEN); 124750974Swpaul 124881713Swpaul /* 124981713Swpaul * Allocate the parent bus DMA tag appropriate for PCI. 125081713Swpaul */ 125181713Swpaul#define SIS_NSEG_NEW 32 125281713Swpaul error = bus_dma_tag_create(NULL, /* parent */ 125381713Swpaul 1, 0, /* alignment, boundary */ 125481713Swpaul BUS_SPACE_MAXADDR_32BIT,/* lowaddr */ 125581713Swpaul BUS_SPACE_MAXADDR, /* highaddr */ 125681713Swpaul NULL, NULL, /* filter, filterarg */ 125781713Swpaul MAXBSIZE, SIS_NSEG_NEW, /* maxsize, nsegments */ 125881713Swpaul BUS_SPACE_MAXSIZE_32BIT,/* maxsegsize */ 125981713Swpaul BUS_DMA_ALLOCNOW, /* flags */ 1260117126Sscottl NULL, NULL, /* lockfunc, lockarg */ 126181713Swpaul &sc->sis_parent_tag); 1262112872Snjl if (error) 1263112872Snjl goto fail; 126450974Swpaul 126581713Swpaul /* 1266112872Snjl * Now allocate a tag for the DMA descriptor lists and a chunk 1267112872Snjl * of DMA-able memory based on the tag. Also obtain the physical 1268112872Snjl * addresses of the RX and TX ring, which we'll need later. 126981713Swpaul * All of our lists are allocated as a contiguous block 127081713Swpaul * of memory. 127181713Swpaul */ 127281713Swpaul error = bus_dma_tag_create(sc->sis_parent_tag, /* parent */ 127381713Swpaul 1, 0, /* alignment, boundary */ 127481713Swpaul BUS_SPACE_MAXADDR, /* lowaddr */ 127581713Swpaul BUS_SPACE_MAXADDR, /* highaddr */ 127681713Swpaul NULL, NULL, /* filter, filterarg */ 127781713Swpaul SIS_RX_LIST_SZ, 1, /* maxsize,nsegments */ 127881713Swpaul BUS_SPACE_MAXSIZE_32BIT,/* maxsegsize */ 127981713Swpaul 0, /* flags */ 1280117126Sscottl busdma_lock_mutex, /* lockfunc */ 1281117126Sscottl &Giant, /* lockarg */ 128281713Swpaul &sc->sis_ldata.sis_rx_tag); 1283112872Snjl if (error) 1284112872Snjl goto fail; 128581713Swpaul 1286112872Snjl error = bus_dmamem_alloc(sc->sis_ldata.sis_rx_tag, 1287118089Smux (void **)&sc->sis_ldata.sis_rx_list, BUS_DMA_NOWAIT | BUS_DMA_ZERO, 1288112872Snjl &sc->sis_ldata.sis_rx_dmamap); 1289112872Snjl 1290112872Snjl if (error) { 1291112872Snjl printf("sis%d: no memory for rx list buffers!\n", unit); 1292112872Snjl bus_dma_tag_destroy(sc->sis_ldata.sis_rx_tag); 1293112872Snjl sc->sis_ldata.sis_rx_tag = NULL; 1294112872Snjl goto fail; 1295112872Snjl } 1296112872Snjl 1297112872Snjl error = bus_dmamap_load(sc->sis_ldata.sis_rx_tag, 1298112872Snjl sc->sis_ldata.sis_rx_dmamap, &(sc->sis_ldata.sis_rx_list[0]), 1299112872Snjl sizeof(struct sis_desc), sis_dma_map_ring, 1300112872Snjl &sc->sis_cdata.sis_rx_paddr, 0); 1301112872Snjl 1302112872Snjl if (error) { 1303112872Snjl printf("sis%d: cannot get address of the rx ring!\n", unit); 1304112872Snjl bus_dmamem_free(sc->sis_ldata.sis_rx_tag, 1305112872Snjl sc->sis_ldata.sis_rx_list, sc->sis_ldata.sis_rx_dmamap); 1306112872Snjl bus_dma_tag_destroy(sc->sis_ldata.sis_rx_tag); 1307112872Snjl sc->sis_ldata.sis_rx_tag = NULL; 1308112872Snjl goto fail; 1309112872Snjl } 1310112872Snjl 131181713Swpaul error = bus_dma_tag_create(sc->sis_parent_tag, /* parent */ 131281713Swpaul 1, 0, /* alignment, boundary */ 131381713Swpaul BUS_SPACE_MAXADDR, /* lowaddr */ 131481713Swpaul BUS_SPACE_MAXADDR, /* highaddr */ 131581713Swpaul NULL, NULL, /* filter, filterarg */ 131681713Swpaul SIS_TX_LIST_SZ, 1, /* maxsize,nsegments */ 131781713Swpaul BUS_SPACE_MAXSIZE_32BIT,/* maxsegsize */ 131881713Swpaul 0, /* flags */ 1319117126Sscottl busdma_lock_mutex, /* lockfunc */ 1320117126Sscottl &Giant, /* lockarg */ 132181713Swpaul &sc->sis_ldata.sis_tx_tag); 1322112872Snjl if (error) 1323112872Snjl goto fail; 132481713Swpaul 132581713Swpaul error = bus_dmamem_alloc(sc->sis_ldata.sis_tx_tag, 1326118089Smux (void **)&sc->sis_ldata.sis_tx_list, BUS_DMA_NOWAIT | BUS_DMA_ZERO, 132781713Swpaul &sc->sis_ldata.sis_tx_dmamap); 132881713Swpaul 132981713Swpaul if (error) { 1330112872Snjl printf("sis%d: no memory for tx list buffers!\n", unit); 133181713Swpaul bus_dma_tag_destroy(sc->sis_ldata.sis_tx_tag); 1332112872Snjl sc->sis_ldata.sis_tx_tag = NULL; 133350974Swpaul goto fail; 133450974Swpaul } 133550974Swpaul 1336112872Snjl error = bus_dmamap_load(sc->sis_ldata.sis_tx_tag, 1337112872Snjl sc->sis_ldata.sis_tx_dmamap, &(sc->sis_ldata.sis_tx_list[0]), 1338112872Snjl sizeof(struct sis_desc), sis_dma_map_ring, 1339112872Snjl &sc->sis_cdata.sis_tx_paddr, 0); 134081713Swpaul 134181713Swpaul if (error) { 1342112872Snjl printf("sis%d: cannot get address of the tx ring!\n", unit); 1343112872Snjl bus_dmamem_free(sc->sis_ldata.sis_tx_tag, 134481713Swpaul sc->sis_ldata.sis_tx_list, sc->sis_ldata.sis_tx_dmamap); 134581713Swpaul bus_dma_tag_destroy(sc->sis_ldata.sis_tx_tag); 1346112872Snjl sc->sis_ldata.sis_tx_tag = NULL; 134781713Swpaul goto fail; 134881713Swpaul } 134981713Swpaul 1350112872Snjl error = bus_dma_tag_create(sc->sis_parent_tag, /* parent */ 1351112872Snjl 1, 0, /* alignment, boundary */ 1352112872Snjl BUS_SPACE_MAXADDR, /* lowaddr */ 1353112872Snjl BUS_SPACE_MAXADDR, /* highaddr */ 1354112872Snjl NULL, NULL, /* filter, filterarg */ 1355112872Snjl MCLBYTES, 1, /* maxsize,nsegments */ 1356112872Snjl BUS_SPACE_MAXSIZE_32BIT,/* maxsegsize */ 1357112872Snjl 0, /* flags */ 1358117126Sscottl busdma_lock_mutex, /* lockfunc */ 1359117126Sscottl &Giant, /* lockarg */ 1360112872Snjl &sc->sis_tag); 1361112872Snjl if (error) 1362112872Snjl goto fail; 136381713Swpaul 136481713Swpaul /* 136581713Swpaul * Obtain the physical addresses of the RX and TX 136681713Swpaul * rings which we'll need later in the init routine. 136781713Swpaul */ 136881713Swpaul 136950974Swpaul ifp = &sc->arpcom.ac_if; 137050974Swpaul ifp->if_softc = sc; 137150974Swpaul ifp->if_unit = unit; 137250974Swpaul ifp->if_name = "sis"; 137350974Swpaul ifp->if_mtu = ETHERMTU; 137450974Swpaul ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 137550974Swpaul ifp->if_ioctl = sis_ioctl; 137650974Swpaul ifp->if_output = ether_output; 137750974Swpaul ifp->if_start = sis_start; 137850974Swpaul ifp->if_watchdog = sis_watchdog; 137950974Swpaul ifp->if_init = sis_init; 138050974Swpaul ifp->if_baudrate = 10000000; 138150974Swpaul ifp->if_snd.ifq_maxlen = SIS_TX_LIST_CNT - 1; 138250974Swpaul 138350974Swpaul /* 138450974Swpaul * Do MII setup. 138550974Swpaul */ 138650974Swpaul if (mii_phy_probe(dev, &sc->sis_miibus, 138750974Swpaul sis_ifmedia_upd, sis_ifmedia_sts)) { 138850974Swpaul printf("sis%d: MII without any PHY!\n", sc->sis_unit); 138950974Swpaul error = ENXIO; 139050974Swpaul goto fail; 139150974Swpaul } 139250974Swpaul 139350974Swpaul /* 139463090Sarchie * Call MI attach routine. 139550974Swpaul */ 1396106936Ssam ether_ifattach(ifp, eaddr); 139787390Sjhay 139887390Sjhay /* 139987390Sjhay * Tell the upper layer(s) we support long frames. 140087390Sjhay */ 140187390Sjhay ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header); 1402106936Ssam ifp->if_capabilities |= IFCAP_VLAN_MTU; 140387390Sjhay 1404113609Snjl /* Hook interrupt last to avoid having to lock softc */ 1405112872Snjl error = bus_setup_intr(dev, sc->sis_irq, INTR_TYPE_NET, 1406112872Snjl sis_intr, sc, &sc->sis_intrhand); 140750974Swpaul 1408112872Snjl if (error) { 1409112872Snjl printf("sis%d: couldn't set up irq\n", unit); 1410113609Snjl ether_ifdetach(ifp); 1411112872Snjl goto fail; 1412112872Snjl } 1413112872Snjl 141450974Swpaulfail: 1415112872Snjl if (error) 1416112872Snjl sis_detach(dev); 1417112872Snjl 141850974Swpaul return(error); 141950974Swpaul} 142050974Swpaul 1421113609Snjl/* 1422113609Snjl * Shutdown hardware and free up resources. This can be called any 1423113609Snjl * time after the mutex has been initialized. It is called in both 1424113609Snjl * the error case in attach and the normal detach case so it needs 1425113609Snjl * to be careful about only freeing resources that have actually been 1426113609Snjl * allocated. 1427113609Snjl */ 1428102334Salfredstatic int 1429102334Salfredsis_detach(dev) 143050974Swpaul device_t dev; 143150974Swpaul{ 143250974Swpaul struct sis_softc *sc; 143350974Swpaul struct ifnet *ifp; 143450974Swpaul 143550974Swpaul sc = device_get_softc(dev); 1436112880Sjhb KASSERT(mtx_initialized(&sc->sis_mtx), ("sis mutex not initialized")); 143767087Swpaul SIS_LOCK(sc); 143850974Swpaul ifp = &sc->arpcom.ac_if; 143950974Swpaul 1440118089Smux /* These should only be active if attach succeeded. */ 1441113812Simp if (device_is_attached(dev)) { 1442113609Snjl sis_reset(sc); 1443113609Snjl sis_stop(sc); 1444112872Snjl ether_ifdetach(ifp); 1445113609Snjl } 1446113609Snjl if (sc->sis_miibus) 1447112872Snjl device_delete_child(dev, sc->sis_miibus); 1448113609Snjl bus_generic_detach(dev); 144950974Swpaul 1450112872Snjl if (sc->sis_intrhand) 1451112872Snjl bus_teardown_intr(dev, sc->sis_irq, sc->sis_intrhand); 1452112872Snjl if (sc->sis_irq) 1453112872Snjl bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sis_irq); 1454112872Snjl if (sc->sis_res) 1455112872Snjl bus_release_resource(dev, SIS_RES, SIS_RID, sc->sis_res); 145650974Swpaul 1457112872Snjl if (sc->sis_ldata.sis_rx_tag) { 1458112872Snjl bus_dmamap_unload(sc->sis_ldata.sis_rx_tag, 1459112872Snjl sc->sis_ldata.sis_rx_dmamap); 1460112872Snjl bus_dmamem_free(sc->sis_ldata.sis_rx_tag, 1461112872Snjl sc->sis_ldata.sis_rx_list, sc->sis_ldata.sis_rx_dmamap); 1462112872Snjl bus_dma_tag_destroy(sc->sis_ldata.sis_rx_tag); 1463112872Snjl } 1464112872Snjl if (sc->sis_ldata.sis_tx_tag) { 1465112872Snjl bus_dmamap_unload(sc->sis_ldata.sis_tx_tag, 1466112872Snjl sc->sis_ldata.sis_tx_dmamap); 1467112872Snjl bus_dmamem_free(sc->sis_ldata.sis_tx_tag, 1468112872Snjl sc->sis_ldata.sis_tx_list, sc->sis_ldata.sis_tx_dmamap); 1469112872Snjl bus_dma_tag_destroy(sc->sis_ldata.sis_tx_tag); 1470112872Snjl } 1471112872Snjl if (sc->sis_parent_tag) 1472112872Snjl bus_dma_tag_destroy(sc->sis_parent_tag); 1473112872Snjl if (sc->sis_tag) 1474112872Snjl bus_dma_tag_destroy(sc->sis_tag); 147550974Swpaul 147667087Swpaul SIS_UNLOCK(sc); 147767087Swpaul mtx_destroy(&sc->sis_mtx); 147850974Swpaul 147950974Swpaul return(0); 148050974Swpaul} 148150974Swpaul 148250974Swpaul/* 148350974Swpaul * Initialize the transmit descriptors. 148450974Swpaul */ 1485102334Salfredstatic int 1486102334Salfredsis_list_tx_init(sc) 148750974Swpaul struct sis_softc *sc; 148850974Swpaul{ 148950974Swpaul struct sis_list_data *ld; 149050974Swpaul struct sis_ring_data *cd; 149187059Sluigi int i, nexti; 149250974Swpaul 149350974Swpaul cd = &sc->sis_cdata; 149481713Swpaul ld = &sc->sis_ldata; 149550974Swpaul 149650974Swpaul for (i = 0; i < SIS_TX_LIST_CNT; i++) { 149787102Sluigi nexti = (i == (SIS_TX_LIST_CNT - 1)) ? 0 : i+1; 149850974Swpaul ld->sis_tx_list[i].sis_nextdesc = 149987059Sluigi &ld->sis_tx_list[nexti]; 150081713Swpaul bus_dmamap_load(sc->sis_ldata.sis_tx_tag, 150181713Swpaul sc->sis_ldata.sis_tx_dmamap, 150287059Sluigi &ld->sis_tx_list[nexti], sizeof(struct sis_desc), 150381713Swpaul sis_dma_map_desc_next, &ld->sis_tx_list[i], 0); 150450974Swpaul ld->sis_tx_list[i].sis_mbuf = NULL; 150550974Swpaul ld->sis_tx_list[i].sis_ptr = 0; 150650974Swpaul ld->sis_tx_list[i].sis_ctl = 0; 150750974Swpaul } 150850974Swpaul 150950974Swpaul cd->sis_tx_prod = cd->sis_tx_cons = cd->sis_tx_cnt = 0; 151050974Swpaul 151181713Swpaul bus_dmamap_sync(sc->sis_ldata.sis_tx_tag, 151281713Swpaul sc->sis_ldata.sis_rx_dmamap, BUS_DMASYNC_PREWRITE); 151381713Swpaul 151450974Swpaul return(0); 151550974Swpaul} 151650974Swpaul 151750974Swpaul/* 151850974Swpaul * Initialize the RX descriptors and allocate mbufs for them. Note that 151950974Swpaul * we arrange the descriptors in a closed ring, so that the last descriptor 152050974Swpaul * points back to the first. 152150974Swpaul */ 1522102334Salfredstatic int 1523102334Salfredsis_list_rx_init(sc) 152450974Swpaul struct sis_softc *sc; 152550974Swpaul{ 152650974Swpaul struct sis_list_data *ld; 152750974Swpaul struct sis_ring_data *cd; 152887059Sluigi int i,nexti; 152950974Swpaul 153081713Swpaul ld = &sc->sis_ldata; 153150974Swpaul cd = &sc->sis_cdata; 153250974Swpaul 153350974Swpaul for (i = 0; i < SIS_RX_LIST_CNT; i++) { 153450974Swpaul if (sis_newbuf(sc, &ld->sis_rx_list[i], NULL) == ENOBUFS) 153550974Swpaul return(ENOBUFS); 153687102Sluigi nexti = (i == (SIS_RX_LIST_CNT - 1)) ? 0 : i+1; 153750974Swpaul ld->sis_rx_list[i].sis_nextdesc = 153887059Sluigi &ld->sis_rx_list[nexti]; 153981713Swpaul bus_dmamap_load(sc->sis_ldata.sis_rx_tag, 154081713Swpaul sc->sis_ldata.sis_rx_dmamap, 154187059Sluigi &ld->sis_rx_list[nexti], 154281713Swpaul sizeof(struct sis_desc), sis_dma_map_desc_next, 154381713Swpaul &ld->sis_rx_list[i], 0); 154450974Swpaul } 154550974Swpaul 154681713Swpaul bus_dmamap_sync(sc->sis_ldata.sis_rx_tag, 154781713Swpaul sc->sis_ldata.sis_rx_dmamap, BUS_DMASYNC_PREWRITE); 154881713Swpaul 154950974Swpaul cd->sis_rx_prod = 0; 155050974Swpaul 155150974Swpaul return(0); 155250974Swpaul} 155350974Swpaul 155450974Swpaul/* 155550974Swpaul * Initialize an RX descriptor and attach an MBUF cluster. 155650974Swpaul */ 1557102334Salfredstatic int 1558102334Salfredsis_newbuf(sc, c, m) 155950974Swpaul struct sis_softc *sc; 156050974Swpaul struct sis_desc *c; 156150974Swpaul struct mbuf *m; 156250974Swpaul{ 156350974Swpaul 156481713Swpaul if (c == NULL) 156581713Swpaul return(EINVAL); 156681713Swpaul 156750974Swpaul if (m == NULL) { 1568111119Simp m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 1569101340Sluigi if (m == NULL) 157050974Swpaul return(ENOBUFS); 1571101340Sluigi } else 1572101340Sluigi m->m_data = m->m_ext.ext_buf; 157350974Swpaul 1574101340Sluigi c->sis_mbuf = m; 157550974Swpaul c->sis_ctl = SIS_RXLEN; 157650974Swpaul 157781713Swpaul bus_dmamap_create(sc->sis_tag, 0, &c->sis_map); 157881713Swpaul bus_dmamap_load(sc->sis_tag, c->sis_map, 1579101464Sluigi mtod(m, void *), MCLBYTES, 158081713Swpaul sis_dma_map_desc_ptr, c, 0); 158181713Swpaul bus_dmamap_sync(sc->sis_tag, c->sis_map, BUS_DMASYNC_PREWRITE); 158281713Swpaul 158350974Swpaul return(0); 158450974Swpaul} 158550974Swpaul 158650974Swpaul/* 158750974Swpaul * A frame has been uploaded: pass the resulting mbuf chain up to 158850974Swpaul * the higher level protocols. 158950974Swpaul */ 1590102334Salfredstatic void 1591102334Salfredsis_rxeof(sc) 159250974Swpaul struct sis_softc *sc; 159350974Swpaul{ 159450974Swpaul struct mbuf *m; 159550974Swpaul struct ifnet *ifp; 159650974Swpaul struct sis_desc *cur_rx; 159750974Swpaul int i, total_len = 0; 159850974Swpaul u_int32_t rxstat; 159950974Swpaul 160050974Swpaul ifp = &sc->arpcom.ac_if; 160150974Swpaul i = sc->sis_cdata.sis_rx_prod; 160250974Swpaul 160381713Swpaul while(SIS_OWNDESC(&sc->sis_ldata.sis_rx_list[i])) { 160450974Swpaul 160587902Sluigi#ifdef DEVICE_POLLING 1606102052Ssobomax if (ifp->if_flags & IFF_POLLING) { 160787902Sluigi if (sc->rxcycles <= 0) 160887902Sluigi break; 160987902Sluigi sc->rxcycles--; 161087902Sluigi } 161187902Sluigi#endif /* DEVICE_POLLING */ 161281713Swpaul cur_rx = &sc->sis_ldata.sis_rx_list[i]; 161350974Swpaul rxstat = cur_rx->sis_rxstat; 161481713Swpaul bus_dmamap_sync(sc->sis_tag, 161581713Swpaul cur_rx->sis_map, BUS_DMASYNC_POSTWRITE); 161681713Swpaul bus_dmamap_unload(sc->sis_tag, cur_rx->sis_map); 161781713Swpaul bus_dmamap_destroy(sc->sis_tag, cur_rx->sis_map); 161850974Swpaul m = cur_rx->sis_mbuf; 161950974Swpaul cur_rx->sis_mbuf = NULL; 162050974Swpaul total_len = SIS_RXBYTES(cur_rx); 162150974Swpaul SIS_INC(i, SIS_RX_LIST_CNT); 162250974Swpaul 162350974Swpaul /* 162450974Swpaul * If an error occurs, update stats, clear the 162550974Swpaul * status word and leave the mbuf cluster in place: 162650974Swpaul * it should simply get re-used next time this descriptor 162750974Swpaul * comes up in the ring. 162850974Swpaul */ 162950974Swpaul if (!(rxstat & SIS_CMDSTS_PKT_OK)) { 163050974Swpaul ifp->if_ierrors++; 163150974Swpaul if (rxstat & SIS_RXSTAT_COLL) 163250974Swpaul ifp->if_collisions++; 163350974Swpaul sis_newbuf(sc, cur_rx, m); 163450974Swpaul continue; 163550974Swpaul } 163650974Swpaul 163750974Swpaul /* No errors; receive the packet. */ 163887059Sluigi#ifdef __i386__ 163987059Sluigi /* 164087059Sluigi * On the x86 we do not have alignment problems, so try to 164187059Sluigi * allocate a new buffer for the receive ring, and pass up 164287059Sluigi * the one where the packet is already, saving the expensive 164387059Sluigi * copy done in m_devget(). 164487059Sluigi * If we are on an architecture with alignment problems, or 164587059Sluigi * if the allocation fails, then use m_devget and leave the 164687059Sluigi * existing buffer in the receive ring. 164787059Sluigi */ 1648101464Sluigi if (sis_newbuf(sc, cur_rx, NULL) == 0) 164987059Sluigi m->m_pkthdr.len = m->m_len = total_len; 1650101464Sluigi else 165187059Sluigi#endif 165287059Sluigi { 165387059Sluigi struct mbuf *m0; 165487059Sluigi m0 = m_devget(mtod(m, char *), total_len, 165587059Sluigi ETHER_ALIGN, ifp, NULL); 165687059Sluigi sis_newbuf(sc, cur_rx, m); 165787059Sluigi if (m0 == NULL) { 165887059Sluigi ifp->if_ierrors++; 165987059Sluigi continue; 166087059Sluigi } 166187059Sluigi m = m0; 166250974Swpaul } 166350974Swpaul 166450974Swpaul ifp->if_ipackets++; 1665106936Ssam m->m_pkthdr.rcvif = ifp; 1666106936Ssam 1667106936Ssam (*ifp->if_input)(ifp, m); 166850974Swpaul } 166950974Swpaul 167050974Swpaul sc->sis_cdata.sis_rx_prod = i; 167150974Swpaul 167250974Swpaul return; 167350974Swpaul} 167450974Swpaul 1675105219Sphkstatic void 1676102334Salfredsis_rxeoc(sc) 167750974Swpaul struct sis_softc *sc; 167850974Swpaul{ 167950974Swpaul sis_rxeof(sc); 168050974Swpaul sis_init(sc); 168150974Swpaul return; 168250974Swpaul} 168350974Swpaul 168450974Swpaul/* 168550974Swpaul * A frame was downloaded to the chip. It's safe for us to clean up 168650974Swpaul * the list buffers. 168750974Swpaul */ 168850974Swpaul 1689102334Salfredstatic void 1690102334Salfredsis_txeof(sc) 169150974Swpaul struct sis_softc *sc; 169250974Swpaul{ 169350974Swpaul struct ifnet *ifp; 169450974Swpaul u_int32_t idx; 169550974Swpaul 169650974Swpaul ifp = &sc->arpcom.ac_if; 169750974Swpaul 169850974Swpaul /* 169950974Swpaul * Go through our tx list and free mbufs for those 170050974Swpaul * frames that have been transmitted. 170150974Swpaul */ 170299163Sluigi for (idx = sc->sis_cdata.sis_tx_cons; sc->sis_cdata.sis_tx_cnt > 0; 170399163Sluigi sc->sis_cdata.sis_tx_cnt--, SIS_INC(idx, SIS_TX_LIST_CNT) ) { 170499163Sluigi struct sis_desc *cur_tx = &sc->sis_ldata.sis_tx_list[idx]; 170550974Swpaul 170650974Swpaul if (SIS_OWNDESC(cur_tx)) 170750974Swpaul break; 170850974Swpaul 170999163Sluigi if (cur_tx->sis_ctl & SIS_CMDSTS_MORE) 171050974Swpaul continue; 171150974Swpaul 171250974Swpaul if (!(cur_tx->sis_ctl & SIS_CMDSTS_PKT_OK)) { 171350974Swpaul ifp->if_oerrors++; 171450974Swpaul if (cur_tx->sis_txstat & SIS_TXSTAT_EXCESSCOLLS) 171550974Swpaul ifp->if_collisions++; 171650974Swpaul if (cur_tx->sis_txstat & SIS_TXSTAT_OUTOFWINCOLL) 171750974Swpaul ifp->if_collisions++; 171850974Swpaul } 171950974Swpaul 172050974Swpaul ifp->if_collisions += 172150974Swpaul (cur_tx->sis_txstat & SIS_TXSTAT_COLLCNT) >> 16; 172250974Swpaul 172350974Swpaul ifp->if_opackets++; 172450974Swpaul if (cur_tx->sis_mbuf != NULL) { 172550974Swpaul m_freem(cur_tx->sis_mbuf); 172650974Swpaul cur_tx->sis_mbuf = NULL; 172781713Swpaul bus_dmamap_unload(sc->sis_tag, cur_tx->sis_map); 172881713Swpaul bus_dmamap_destroy(sc->sis_tag, cur_tx->sis_map); 172950974Swpaul } 173099163Sluigi } 173150974Swpaul 173299163Sluigi if (idx != sc->sis_cdata.sis_tx_cons) { 173399163Sluigi /* we freed up some buffers */ 173499163Sluigi sc->sis_cdata.sis_tx_cons = idx; 173599163Sluigi ifp->if_flags &= ~IFF_OACTIVE; 173650974Swpaul } 173750974Swpaul 173899163Sluigi ifp->if_timer = (sc->sis_cdata.sis_tx_cnt == 0) ? 0 : 5; 173950974Swpaul 174050974Swpaul return; 174150974Swpaul} 174250974Swpaul 1743102334Salfredstatic void 1744102334Salfredsis_tick(xsc) 174550974Swpaul void *xsc; 174650974Swpaul{ 174750974Swpaul struct sis_softc *sc; 174850974Swpaul struct mii_data *mii; 174964963Swpaul struct ifnet *ifp; 175050974Swpaul 175150974Swpaul sc = xsc; 175267087Swpaul SIS_LOCK(sc); 1753117858Scognet sc->in_tick = 1; 175464963Swpaul ifp = &sc->arpcom.ac_if; 175564963Swpaul 175650974Swpaul mii = device_get_softc(sc->sis_miibus); 175750974Swpaul mii_tick(mii); 175864963Swpaul 175984147Sjlemon if (!sc->sis_link && mii->mii_media_status & IFM_ACTIVE && 176084147Sjlemon IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) { 176184147Sjlemon sc->sis_link++; 176284147Sjlemon if (ifp->if_snd.ifq_head != NULL) 176384147Sjlemon sis_start(ifp); 176464963Swpaul } 176564963Swpaul 1766119785Ssam callout_reset(&sc->sis_stat_ch, hz, sis_tick, sc); 1767117858Scognet sc->in_tick = 0; 176867087Swpaul SIS_UNLOCK(sc); 176950974Swpaul 177050974Swpaul return; 177150974Swpaul} 177250974Swpaul 177387902Sluigi#ifdef DEVICE_POLLING 177487902Sluigistatic poll_handler_t sis_poll; 177587902Sluigi 177687902Sluigistatic void 177787902Sluigisis_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 177887902Sluigi{ 177987973Speter struct sis_softc *sc = ifp->if_softc; 178087973Speter 178187902Sluigi SIS_LOCK(sc); 178287902Sluigi if (cmd == POLL_DEREGISTER) { /* final call, enable interrupts */ 178387902Sluigi CSR_WRITE_4(sc, SIS_IER, 1); 178487902Sluigi goto done; 178587902Sluigi } 178687902Sluigi 178787902Sluigi /* 178887902Sluigi * On the sis, reading the status register also clears it. 178987902Sluigi * So before returning to intr mode we must make sure that all 179087902Sluigi * possible pending sources of interrupts have been served. 179187902Sluigi * In practice this means run to completion the *eof routines, 179287902Sluigi * and then call the interrupt routine 179387902Sluigi */ 179487902Sluigi sc->rxcycles = count; 179587902Sluigi sis_rxeof(sc); 179687902Sluigi sis_txeof(sc); 179787902Sluigi if (ifp->if_snd.ifq_head != NULL) 179887902Sluigi sis_start(ifp); 179987902Sluigi 180087902Sluigi if (sc->rxcycles > 0 || cmd == POLL_AND_CHECK_STATUS) { 180187902Sluigi u_int32_t status; 180287902Sluigi 180387902Sluigi /* Reading the ISR register clears all interrupts. */ 180487902Sluigi status = CSR_READ_4(sc, SIS_ISR); 180587902Sluigi 180687902Sluigi if (status & (SIS_ISR_RX_ERR|SIS_ISR_RX_OFLOW)) 180787902Sluigi sis_rxeoc(sc); 180887902Sluigi 180987902Sluigi if (status & (SIS_ISR_RX_IDLE)) 181087902Sluigi SIS_SETBIT(sc, SIS_CSR, SIS_CSR_RX_ENABLE); 181187902Sluigi 181287902Sluigi if (status & SIS_ISR_SYSERR) { 181387902Sluigi sis_reset(sc); 181487902Sluigi sis_init(sc); 181587902Sluigi } 181687902Sluigi } 181787902Sluigidone: 181887902Sluigi SIS_UNLOCK(sc); 181987902Sluigi return; 182087902Sluigi} 182187902Sluigi#endif /* DEVICE_POLLING */ 182287902Sluigi 1823102334Salfredstatic void 1824102334Salfredsis_intr(arg) 182550974Swpaul void *arg; 182650974Swpaul{ 182750974Swpaul struct sis_softc *sc; 182850974Swpaul struct ifnet *ifp; 182950974Swpaul u_int32_t status; 183050974Swpaul 183150974Swpaul sc = arg; 183250974Swpaul ifp = &sc->arpcom.ac_if; 183350974Swpaul 183486984Sluigi SIS_LOCK(sc); 183587902Sluigi#ifdef DEVICE_POLLING 1836102052Ssobomax if (ifp->if_flags & IFF_POLLING) 183787902Sluigi goto done; 183887902Sluigi if (ether_poll_register(sis_poll, ifp)) { /* ok, disable interrupts */ 183987902Sluigi CSR_WRITE_4(sc, SIS_IER, 0); 184087902Sluigi goto done; 184187902Sluigi } 184287902Sluigi#endif /* DEVICE_POLLING */ 184387902Sluigi 184450974Swpaul /* Supress unwanted interrupts */ 184550974Swpaul if (!(ifp->if_flags & IFF_UP)) { 184650974Swpaul sis_stop(sc); 184786984Sluigi goto done; 184850974Swpaul } 184950974Swpaul 185050974Swpaul /* Disable interrupts. */ 185150974Swpaul CSR_WRITE_4(sc, SIS_IER, 0); 185250974Swpaul 185350974Swpaul for (;;) { 185450974Swpaul /* Reading the ISR register clears all interrupts. */ 185550974Swpaul status = CSR_READ_4(sc, SIS_ISR); 185650974Swpaul 185750974Swpaul if ((status & SIS_INTRS) == 0) 185850974Swpaul break; 185950974Swpaul 186086984Sluigi if (status & 186186984Sluigi (SIS_ISR_TX_DESC_OK | SIS_ISR_TX_ERR | 186286984Sluigi SIS_ISR_TX_OK | SIS_ISR_TX_IDLE) ) 186350974Swpaul sis_txeof(sc); 186450974Swpaul 186586984Sluigi if (status & (SIS_ISR_RX_DESC_OK|SIS_ISR_RX_OK|SIS_ISR_RX_IDLE)) 186650974Swpaul sis_rxeof(sc); 186750974Swpaul 186886984Sluigi if (status & (SIS_ISR_RX_ERR | SIS_ISR_RX_OFLOW)) 186950974Swpaul sis_rxeoc(sc); 187050974Swpaul 187186984Sluigi if (status & (SIS_ISR_RX_IDLE)) 187286984Sluigi SIS_SETBIT(sc, SIS_CSR, SIS_CSR_RX_ENABLE); 187386984Sluigi 187450974Swpaul if (status & SIS_ISR_SYSERR) { 187550974Swpaul sis_reset(sc); 187650974Swpaul sis_init(sc); 187750974Swpaul } 187850974Swpaul } 187950974Swpaul 188050974Swpaul /* Re-enable interrupts. */ 188150974Swpaul CSR_WRITE_4(sc, SIS_IER, 1); 188250974Swpaul 188350974Swpaul if (ifp->if_snd.ifq_head != NULL) 188450974Swpaul sis_start(ifp); 188586984Sluigidone: 188667087Swpaul SIS_UNLOCK(sc); 188767087Swpaul 188850974Swpaul return; 188950974Swpaul} 189050974Swpaul 189150974Swpaul/* 189250974Swpaul * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data 189350974Swpaul * pointers to the fragment pointers. 189450974Swpaul */ 1895102334Salfredstatic int 1896102334Salfredsis_encap(sc, m_head, txidx) 189750974Swpaul struct sis_softc *sc; 1898121262Ssilby struct mbuf **m_head; 189950974Swpaul u_int32_t *txidx; 190050974Swpaul{ 190150974Swpaul struct sis_desc *f = NULL; 190250974Swpaul struct mbuf *m; 1903112808Ssilby int frag, cur, cnt = 0, chainlen = 0; 190450974Swpaul 190550974Swpaul /* 1906112808Ssilby * If there's no way we can send any packets, return now. 1907112808Ssilby */ 1908112808Ssilby if (SIS_TX_LIST_CNT - sc->sis_cdata.sis_tx_cnt < 2) 1909112808Ssilby return (ENOBUFS); 1910112808Ssilby 1911112808Ssilby /* 1912112808Ssilby * Count the number of frags in this chain to see if 1913112808Ssilby * we need to m_defrag. Since the descriptor list is shared 1914112808Ssilby * by all packets, we'll m_defrag long chains so that they 1915112808Ssilby * do not use up the entire list, even if they would fit. 1916112808Ssilby */ 1917112808Ssilby 1918121262Ssilby for (m = *m_head; m != NULL; m = m->m_next) 1919112808Ssilby chainlen++; 1920112808Ssilby 1921112808Ssilby if ((chainlen > SIS_TX_LIST_CNT / 4) || 1922112808Ssilby ((SIS_TX_LIST_CNT - (chainlen + sc->sis_cdata.sis_tx_cnt)) < 2)) { 1923121262Ssilby m = m_defrag(*m_head, M_DONTWAIT); 1924112808Ssilby if (m == NULL) 1925112808Ssilby return (ENOBUFS); 1926121262Ssilby *m_head = m; 1927112808Ssilby } 1928112808Ssilby 1929112808Ssilby /* 193050974Swpaul * Start packing the mbufs in this chain into 193150974Swpaul * the fragment pointers. Stop when we run out 193250974Swpaul * of fragments or hit the end of the mbuf chain. 193350974Swpaul */ 193450974Swpaul cur = frag = *txidx; 193550974Swpaul 1936121262Ssilby for (m = *m_head; m != NULL; m = m->m_next) { 193750974Swpaul if (m->m_len != 0) { 193851042Swpaul if ((SIS_TX_LIST_CNT - 193950974Swpaul (sc->sis_cdata.sis_tx_cnt + cnt)) < 2) 194050974Swpaul return(ENOBUFS); 194181713Swpaul f = &sc->sis_ldata.sis_tx_list[frag]; 194250974Swpaul f->sis_ctl = SIS_CMDSTS_MORE | m->m_len; 194381713Swpaul bus_dmamap_create(sc->sis_tag, 0, &f->sis_map); 194481713Swpaul bus_dmamap_load(sc->sis_tag, f->sis_map, 194581713Swpaul mtod(m, void *), m->m_len, 194681713Swpaul sis_dma_map_desc_ptr, f, 0); 194781713Swpaul bus_dmamap_sync(sc->sis_tag, 194881713Swpaul f->sis_map, BUS_DMASYNC_PREREAD); 194950974Swpaul if (cnt != 0) 195050974Swpaul f->sis_ctl |= SIS_CMDSTS_OWN; 195150974Swpaul cur = frag; 195250974Swpaul SIS_INC(frag, SIS_TX_LIST_CNT); 195350974Swpaul cnt++; 195450974Swpaul } 195550974Swpaul } 195650974Swpaul 195750974Swpaul if (m != NULL) 195850974Swpaul return(ENOBUFS); 195950974Swpaul 1960121262Ssilby sc->sis_ldata.sis_tx_list[cur].sis_mbuf = *m_head; 196181713Swpaul sc->sis_ldata.sis_tx_list[cur].sis_ctl &= ~SIS_CMDSTS_MORE; 196281713Swpaul sc->sis_ldata.sis_tx_list[*txidx].sis_ctl |= SIS_CMDSTS_OWN; 196350974Swpaul sc->sis_cdata.sis_tx_cnt += cnt; 196450974Swpaul *txidx = frag; 196550974Swpaul 196650974Swpaul return(0); 196750974Swpaul} 196850974Swpaul 196950974Swpaul/* 197050974Swpaul * Main transmit routine. To avoid having to do mbuf copies, we put pointers 197150974Swpaul * to the mbuf data regions directly in the transmit lists. We also save a 197250974Swpaul * copy of the pointers since the transmit list fragment pointers are 197350974Swpaul * physical addresses. 197450974Swpaul */ 197550974Swpaul 1976102334Salfredstatic void 1977102334Salfredsis_start(ifp) 197850974Swpaul struct ifnet *ifp; 197950974Swpaul{ 198050974Swpaul struct sis_softc *sc; 198150974Swpaul struct mbuf *m_head = NULL; 198250974Swpaul u_int32_t idx; 198350974Swpaul 198450974Swpaul sc = ifp->if_softc; 198567087Swpaul SIS_LOCK(sc); 198650974Swpaul 198767087Swpaul if (!sc->sis_link) { 198867087Swpaul SIS_UNLOCK(sc); 198964963Swpaul return; 199067087Swpaul } 199164963Swpaul 199250974Swpaul idx = sc->sis_cdata.sis_tx_prod; 199350974Swpaul 199467087Swpaul if (ifp->if_flags & IFF_OACTIVE) { 199567087Swpaul SIS_UNLOCK(sc); 199650974Swpaul return; 199767087Swpaul } 199850974Swpaul 199981713Swpaul while(sc->sis_ldata.sis_tx_list[idx].sis_mbuf == NULL) { 200050974Swpaul IF_DEQUEUE(&ifp->if_snd, m_head); 200150974Swpaul if (m_head == NULL) 200250974Swpaul break; 200350974Swpaul 2004121262Ssilby if (sis_encap(sc, &m_head, &idx)) { 200550974Swpaul IF_PREPEND(&ifp->if_snd, m_head); 200650974Swpaul ifp->if_flags |= IFF_OACTIVE; 200750974Swpaul break; 200850974Swpaul } 200950974Swpaul 201050974Swpaul /* 201150974Swpaul * If there's a BPF listener, bounce a copy of this frame 201250974Swpaul * to him. 201350974Swpaul */ 2014106936Ssam BPF_MTAP(ifp, m_head); 201551583Swpaul 201650974Swpaul } 201750974Swpaul 201850974Swpaul /* Transmit */ 201950974Swpaul sc->sis_cdata.sis_tx_prod = idx; 202050974Swpaul SIS_SETBIT(sc, SIS_CSR, SIS_CSR_TX_ENABLE); 202150974Swpaul 202250974Swpaul /* 202350974Swpaul * Set a timeout in case the chip goes out to lunch. 202450974Swpaul */ 202550974Swpaul ifp->if_timer = 5; 202650974Swpaul 202767087Swpaul SIS_UNLOCK(sc); 202867087Swpaul 202950974Swpaul return; 203050974Swpaul} 203150974Swpaul 2032102334Salfredstatic void 2033102334Salfredsis_init(xsc) 203450974Swpaul void *xsc; 203550974Swpaul{ 203650974Swpaul struct sis_softc *sc = xsc; 203750974Swpaul struct ifnet *ifp = &sc->arpcom.ac_if; 203850974Swpaul struct mii_data *mii; 203950974Swpaul 204067087Swpaul SIS_LOCK(sc); 204150974Swpaul 204250974Swpaul /* 204350974Swpaul * Cancel pending I/O and free all RX/TX buffers. 204450974Swpaul */ 204550974Swpaul sis_stop(sc); 204650974Swpaul 2047119712Sphk#ifdef notyet 2048119712Sphk if (sc->sis_type == SIS_TYPE_83815 && sc->sis_srr >= NS_SRR_16A) { 2049119712Sphk /* 2050119712Sphk * Configure 400usec of interrupt holdoff. This is based 2051119712Sphk * on emperical tests on a Soekris 4801. 2052119712Sphk */ 2053119712Sphk CSR_WRITE_4(sc, NS_IHR, 0x100 | 4); 2054119712Sphk } 2055119712Sphk#endif 2056119712Sphk 205750974Swpaul mii = device_get_softc(sc->sis_miibus); 205850974Swpaul 205950974Swpaul /* Set MAC address */ 206062672Swpaul if (sc->sis_type == SIS_TYPE_83815) { 206162672Swpaul CSR_WRITE_4(sc, SIS_RXFILT_CTL, NS_FILTADDR_PAR0); 206262672Swpaul CSR_WRITE_4(sc, SIS_RXFILT_DATA, 206362672Swpaul ((u_int16_t *)sc->arpcom.ac_enaddr)[0]); 206462672Swpaul CSR_WRITE_4(sc, SIS_RXFILT_CTL, NS_FILTADDR_PAR1); 206562672Swpaul CSR_WRITE_4(sc, SIS_RXFILT_DATA, 206662672Swpaul ((u_int16_t *)sc->arpcom.ac_enaddr)[1]); 206762672Swpaul CSR_WRITE_4(sc, SIS_RXFILT_CTL, NS_FILTADDR_PAR2); 206862672Swpaul CSR_WRITE_4(sc, SIS_RXFILT_DATA, 206962672Swpaul ((u_int16_t *)sc->arpcom.ac_enaddr)[2]); 207062672Swpaul } else { 207162672Swpaul CSR_WRITE_4(sc, SIS_RXFILT_CTL, SIS_FILTADDR_PAR0); 207262672Swpaul CSR_WRITE_4(sc, SIS_RXFILT_DATA, 207362672Swpaul ((u_int16_t *)sc->arpcom.ac_enaddr)[0]); 207462672Swpaul CSR_WRITE_4(sc, SIS_RXFILT_CTL, SIS_FILTADDR_PAR1); 207562672Swpaul CSR_WRITE_4(sc, SIS_RXFILT_DATA, 207662672Swpaul ((u_int16_t *)sc->arpcom.ac_enaddr)[1]); 207762672Swpaul CSR_WRITE_4(sc, SIS_RXFILT_CTL, SIS_FILTADDR_PAR2); 207862672Swpaul CSR_WRITE_4(sc, SIS_RXFILT_DATA, 207962672Swpaul ((u_int16_t *)sc->arpcom.ac_enaddr)[2]); 208062672Swpaul } 208150974Swpaul 208250974Swpaul /* Init circular RX list. */ 208350974Swpaul if (sis_list_rx_init(sc) == ENOBUFS) { 208450974Swpaul printf("sis%d: initialization failed: no " 208550974Swpaul "memory for rx buffers\n", sc->sis_unit); 208650974Swpaul sis_stop(sc); 208767087Swpaul SIS_UNLOCK(sc); 208850974Swpaul return; 208950974Swpaul } 209050974Swpaul 209150974Swpaul /* 209250974Swpaul * Init tx descriptors. 209350974Swpaul */ 209450974Swpaul sis_list_tx_init(sc); 209550974Swpaul 209662672Swpaul /* 209762672Swpaul * For the NatSemi chip, we have to explicitly enable the 209862672Swpaul * reception of ARP frames, as well as turn on the 'perfect 209962672Swpaul * match' filter where we store the station address, otherwise 210062672Swpaul * we won't receive unicasts meant for this host. 210162672Swpaul */ 210262672Swpaul if (sc->sis_type == SIS_TYPE_83815) { 210362672Swpaul SIS_SETBIT(sc, SIS_RXFILT_CTL, NS_RXFILTCTL_ARP); 210462672Swpaul SIS_SETBIT(sc, SIS_RXFILT_CTL, NS_RXFILTCTL_PERFECT); 210562672Swpaul } 210662672Swpaul 210750974Swpaul /* If we want promiscuous mode, set the allframes bit. */ 210850974Swpaul if (ifp->if_flags & IFF_PROMISC) { 210950974Swpaul SIS_SETBIT(sc, SIS_RXFILT_CTL, SIS_RXFILTCTL_ALLPHYS); 211050974Swpaul } else { 211150974Swpaul SIS_CLRBIT(sc, SIS_RXFILT_CTL, SIS_RXFILTCTL_ALLPHYS); 211250974Swpaul } 211350974Swpaul 211450974Swpaul /* 211550974Swpaul * Set the capture broadcast bit to capture broadcast frames. 211650974Swpaul */ 211750974Swpaul if (ifp->if_flags & IFF_BROADCAST) { 211850974Swpaul SIS_SETBIT(sc, SIS_RXFILT_CTL, SIS_RXFILTCTL_BROAD); 211950974Swpaul } else { 212050974Swpaul SIS_CLRBIT(sc, SIS_RXFILT_CTL, SIS_RXFILTCTL_BROAD); 212150974Swpaul } 212250974Swpaul 212350974Swpaul /* 212450974Swpaul * Load the multicast filter. 212550974Swpaul */ 212662672Swpaul if (sc->sis_type == SIS_TYPE_83815) 212762672Swpaul sis_setmulti_ns(sc); 212862672Swpaul else 212962672Swpaul sis_setmulti_sis(sc); 213050974Swpaul 213150974Swpaul /* Turn the receive filter on */ 213250974Swpaul SIS_SETBIT(sc, SIS_RXFILT_CTL, SIS_RXFILTCTL_ENABLE); 213350974Swpaul 213450974Swpaul /* 213550974Swpaul * Load the address of the RX and TX lists. 213650974Swpaul */ 213781713Swpaul CSR_WRITE_4(sc, SIS_RX_LISTPTR, sc->sis_cdata.sis_rx_paddr); 213881713Swpaul CSR_WRITE_4(sc, SIS_TX_LISTPTR, sc->sis_cdata.sis_tx_paddr); 213950974Swpaul 2140109059Smbr /* SIS_CFG_EDB_MASTER_EN indicates the EDB bus is used instead of 2141109059Smbr * the PCI bus. When this bit is set, the Max DMA Burst Size 2142109059Smbr * for TX/RX DMA should be no larger than 16 double words. 2143109059Smbr */ 2144109059Smbr if (CSR_READ_4(sc, SIS_CFG) & SIS_CFG_EDB_MASTER_EN) { 2145109059Smbr CSR_WRITE_4(sc, SIS_RX_CFG, SIS_RXCFG64); 2146109059Smbr } else { 2147109059Smbr CSR_WRITE_4(sc, SIS_RX_CFG, SIS_RXCFG256); 2148109059Smbr } 214964963Swpaul 2150109059Smbr 215187390Sjhay /* Accept Long Packets for VLAN support */ 215287390Sjhay SIS_SETBIT(sc, SIS_RX_CFG, SIS_RXCFG_RX_JABBER); 215387390Sjhay 215450974Swpaul /* Set TX configuration */ 215564963Swpaul if (IFM_SUBTYPE(mii->mii_media_active) == IFM_10_T) { 215664963Swpaul CSR_WRITE_4(sc, SIS_TX_CFG, SIS_TXCFG_10); 215764963Swpaul } else { 215864963Swpaul CSR_WRITE_4(sc, SIS_TX_CFG, SIS_TXCFG_100); 215964963Swpaul } 216050974Swpaul 216164963Swpaul /* Set full/half duplex mode. */ 216264963Swpaul if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) { 216364963Swpaul SIS_SETBIT(sc, SIS_TX_CFG, 216464963Swpaul (SIS_TXCFG_IGN_HBEAT|SIS_TXCFG_IGN_CARR)); 216564963Swpaul SIS_SETBIT(sc, SIS_RX_CFG, SIS_RXCFG_RX_TXPKTS); 216664963Swpaul } else { 216764963Swpaul SIS_CLRBIT(sc, SIS_TX_CFG, 216864963Swpaul (SIS_TXCFG_IGN_HBEAT|SIS_TXCFG_IGN_CARR)); 216964963Swpaul SIS_CLRBIT(sc, SIS_RX_CFG, SIS_RXCFG_RX_TXPKTS); 217064963Swpaul } 217164963Swpaul 2172119712Sphk if (sc->sis_type == SIS_TYPE_83815 && sc->sis_srr < NS_SRR_16A && 2173119130Ssam IFM_SUBTYPE(mii->mii_media_active) == IFM_100_TX) { 2174119130Ssam uint32_t reg; 2175119130Ssam 2176119130Ssam /* 2177119130Ssam * Some DP83815s experience problems when used with short 2178119130Ssam * (< 30m/100ft) Ethernet cables in 100BaseTX mode. This 2179119130Ssam * sequence adjusts the DSP's signal attenuation to fix the 2180119130Ssam * problem. 2181119130Ssam */ 2182119130Ssam CSR_WRITE_4(sc, NS_PHY_PAGE, 0x0001); 2183119130Ssam 2184119130Ssam reg = CSR_READ_4(sc, NS_PHY_DSPCFG); 2185119130Ssam CSR_WRITE_4(sc, NS_PHY_DSPCFG, (reg & 0xfff) | 0x1000); 2186119130Ssam DELAY(100); 2187119130Ssam reg = CSR_READ_4(sc, NS_PHY_TDATA); 2188119130Ssam if ((reg & 0x0080) == 0 || (reg & 0xff) >= 0xd8) { 2189119712Sphk device_printf(sc->sis_self, "Applying short cable fix (reg=%x)\n", reg); 2190119130Ssam CSR_WRITE_4(sc, NS_PHY_TDATA, 0x00e8); 2191119130Ssam SIS_SETBIT(sc, NS_PHY_DSPCFG, 0x20); 2192119130Ssam } 2193119130Ssam CSR_WRITE_4(sc, NS_PHY_PAGE, 0); 2194119130Ssam } 2195119130Ssam 219650974Swpaul /* 219750974Swpaul * Enable interrupts. 219850974Swpaul */ 219950974Swpaul CSR_WRITE_4(sc, SIS_IMR, SIS_INTRS); 220087902Sluigi#ifdef DEVICE_POLLING 220187902Sluigi /* 220287902Sluigi * ... only enable interrupts if we are not polling, make sure 220387902Sluigi * they are off otherwise. 220487902Sluigi */ 2205102052Ssobomax if (ifp->if_flags & IFF_POLLING) 220687902Sluigi CSR_WRITE_4(sc, SIS_IER, 0); 220787902Sluigi else 220887902Sluigi#endif /* DEVICE_POLLING */ 220950974Swpaul CSR_WRITE_4(sc, SIS_IER, 1); 221050974Swpaul 221150974Swpaul /* Enable receiver and transmitter. */ 221250974Swpaul SIS_CLRBIT(sc, SIS_CSR, SIS_CSR_TX_DISABLE|SIS_CSR_RX_DISABLE); 221350974Swpaul SIS_SETBIT(sc, SIS_CSR, SIS_CSR_RX_ENABLE); 221450974Swpaul 221564963Swpaul#ifdef notdef 221650974Swpaul mii_mediachg(mii); 221764963Swpaul#endif 221850974Swpaul 221964963Swpaul /* 222064963Swpaul * Page 75 of the DP83815 manual recommends the 222164963Swpaul * following register settings "for optimum 222264963Swpaul * performance." Note however that at least three 222364963Swpaul * of the registers are listed as "reserved" in 222464963Swpaul * the register map, so who knows what they do. 222564963Swpaul */ 222664963Swpaul if (sc->sis_type == SIS_TYPE_83815) { 222764963Swpaul CSR_WRITE_4(sc, NS_PHY_PAGE, 0x0001); 222864963Swpaul CSR_WRITE_4(sc, NS_PHY_CR, 0x189C); 222964963Swpaul CSR_WRITE_4(sc, NS_PHY_TDATA, 0x0000); 223064963Swpaul CSR_WRITE_4(sc, NS_PHY_DSPCFG, 0x5040); 223164963Swpaul CSR_WRITE_4(sc, NS_PHY_SDCFG, 0x008C); 223264963Swpaul } 223364963Swpaul 223450974Swpaul ifp->if_flags |= IFF_RUNNING; 223550974Swpaul ifp->if_flags &= ~IFF_OACTIVE; 223650974Swpaul 2237117858Scognet if (!sc->in_tick) 2238119785Ssam callout_reset(&sc->sis_stat_ch, hz, sis_tick, sc); 223950974Swpaul 224067087Swpaul SIS_UNLOCK(sc); 224167087Swpaul 224250974Swpaul return; 224350974Swpaul} 224450974Swpaul 224550974Swpaul/* 224650974Swpaul * Set media options. 224750974Swpaul */ 2248102334Salfredstatic int 2249102334Salfredsis_ifmedia_upd(ifp) 225050974Swpaul struct ifnet *ifp; 225150974Swpaul{ 225250974Swpaul struct sis_softc *sc; 225364963Swpaul struct mii_data *mii; 225450974Swpaul 225550974Swpaul sc = ifp->if_softc; 225650974Swpaul 225764963Swpaul mii = device_get_softc(sc->sis_miibus); 225864963Swpaul sc->sis_link = 0; 225964963Swpaul if (mii->mii_instance) { 226064963Swpaul struct mii_softc *miisc; 226172012Sphk LIST_FOREACH(miisc, &mii->mii_phys, mii_list) 226264963Swpaul mii_phy_reset(miisc); 226364963Swpaul } 226464963Swpaul mii_mediachg(mii); 226550974Swpaul 226650974Swpaul return(0); 226750974Swpaul} 226850974Swpaul 226950974Swpaul/* 227050974Swpaul * Report current media status. 227150974Swpaul */ 2272102334Salfredstatic void 2273102334Salfredsis_ifmedia_sts(ifp, ifmr) 227450974Swpaul struct ifnet *ifp; 227550974Swpaul struct ifmediareq *ifmr; 227650974Swpaul{ 227750974Swpaul struct sis_softc *sc; 227850974Swpaul struct mii_data *mii; 227950974Swpaul 228050974Swpaul sc = ifp->if_softc; 228150974Swpaul 228250974Swpaul mii = device_get_softc(sc->sis_miibus); 228350974Swpaul mii_pollstat(mii); 228450974Swpaul ifmr->ifm_active = mii->mii_media_active; 228550974Swpaul ifmr->ifm_status = mii->mii_media_status; 228650974Swpaul 228750974Swpaul return; 228850974Swpaul} 228950974Swpaul 2290102334Salfredstatic int 2291102334Salfredsis_ioctl(ifp, command, data) 229250974Swpaul struct ifnet *ifp; 229350974Swpaul u_long command; 229450974Swpaul caddr_t data; 229550974Swpaul{ 229650974Swpaul struct sis_softc *sc = ifp->if_softc; 229750974Swpaul struct ifreq *ifr = (struct ifreq *) data; 229850974Swpaul struct mii_data *mii; 229967087Swpaul int error = 0; 230050974Swpaul 230150974Swpaul switch(command) { 230250974Swpaul case SIOCSIFFLAGS: 230350974Swpaul if (ifp->if_flags & IFF_UP) { 230450974Swpaul sis_init(sc); 230550974Swpaul } else { 230650974Swpaul if (ifp->if_flags & IFF_RUNNING) 230750974Swpaul sis_stop(sc); 230850974Swpaul } 230950974Swpaul error = 0; 231050974Swpaul break; 231150974Swpaul case SIOCADDMULTI: 231250974Swpaul case SIOCDELMULTI: 231381713Swpaul SIS_LOCK(sc); 231462672Swpaul if (sc->sis_type == SIS_TYPE_83815) 231562672Swpaul sis_setmulti_ns(sc); 231662672Swpaul else 231762672Swpaul sis_setmulti_sis(sc); 231881713Swpaul SIS_UNLOCK(sc); 231950974Swpaul error = 0; 232050974Swpaul break; 232150974Swpaul case SIOCGIFMEDIA: 232250974Swpaul case SIOCSIFMEDIA: 232350974Swpaul mii = device_get_softc(sc->sis_miibus); 232481713Swpaul SIS_LOCK(sc); 232550974Swpaul error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); 232681713Swpaul SIS_UNLOCK(sc); 232750974Swpaul break; 232850974Swpaul default: 2329106936Ssam error = ether_ioctl(ifp, command, data); 233050974Swpaul break; 233150974Swpaul } 233250974Swpaul 233350974Swpaul return(error); 233450974Swpaul} 233550974Swpaul 2336102334Salfredstatic void 2337102334Salfredsis_watchdog(ifp) 233850974Swpaul struct ifnet *ifp; 233950974Swpaul{ 234050974Swpaul struct sis_softc *sc; 234150974Swpaul 234250974Swpaul sc = ifp->if_softc; 234350974Swpaul 234467087Swpaul SIS_LOCK(sc); 234567087Swpaul 234650974Swpaul ifp->if_oerrors++; 234750974Swpaul printf("sis%d: watchdog timeout\n", sc->sis_unit); 234850974Swpaul 234950974Swpaul sis_stop(sc); 235050974Swpaul sis_reset(sc); 235150974Swpaul sis_init(sc); 235250974Swpaul 235350974Swpaul if (ifp->if_snd.ifq_head != NULL) 235450974Swpaul sis_start(ifp); 235550974Swpaul 235667087Swpaul SIS_UNLOCK(sc); 235767087Swpaul 235850974Swpaul return; 235950974Swpaul} 236050974Swpaul 236150974Swpaul/* 236250974Swpaul * Stop the adapter and free any mbufs allocated to the 236350974Swpaul * RX and TX lists. 236450974Swpaul */ 2365102334Salfredstatic void 2366102334Salfredsis_stop(sc) 236750974Swpaul struct sis_softc *sc; 236850974Swpaul{ 236950974Swpaul register int i; 237050974Swpaul struct ifnet *ifp; 237150974Swpaul 237267087Swpaul SIS_LOCK(sc); 237350974Swpaul ifp = &sc->arpcom.ac_if; 237450974Swpaul ifp->if_timer = 0; 237550974Swpaul 2376119785Ssam callout_stop(&sc->sis_stat_ch); 237787472Speter 237887472Speter ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 237987902Sluigi#ifdef DEVICE_POLLING 238087902Sluigi ether_poll_deregister(ifp); 238187902Sluigi#endif 238250974Swpaul CSR_WRITE_4(sc, SIS_IER, 0); 238350974Swpaul CSR_WRITE_4(sc, SIS_IMR, 0); 238450974Swpaul SIS_SETBIT(sc, SIS_CSR, SIS_CSR_TX_DISABLE|SIS_CSR_RX_DISABLE); 238550974Swpaul DELAY(1000); 238650974Swpaul CSR_WRITE_4(sc, SIS_TX_LISTPTR, 0); 238750974Swpaul CSR_WRITE_4(sc, SIS_RX_LISTPTR, 0); 238850974Swpaul 238964963Swpaul sc->sis_link = 0; 239064963Swpaul 239150974Swpaul /* 239250974Swpaul * Free data in the RX lists. 239350974Swpaul */ 239450974Swpaul for (i = 0; i < SIS_RX_LIST_CNT; i++) { 239581713Swpaul if (sc->sis_ldata.sis_rx_list[i].sis_mbuf != NULL) { 239681713Swpaul bus_dmamap_unload(sc->sis_tag, 239781713Swpaul sc->sis_ldata.sis_rx_list[i].sis_map); 239881713Swpaul bus_dmamap_destroy(sc->sis_tag, 239981713Swpaul sc->sis_ldata.sis_rx_list[i].sis_map); 240081713Swpaul m_freem(sc->sis_ldata.sis_rx_list[i].sis_mbuf); 240181713Swpaul sc->sis_ldata.sis_rx_list[i].sis_mbuf = NULL; 240250974Swpaul } 240350974Swpaul } 240481713Swpaul bzero(sc->sis_ldata.sis_rx_list, 240581713Swpaul sizeof(sc->sis_ldata.sis_rx_list)); 240650974Swpaul 240750974Swpaul /* 240850974Swpaul * Free the TX list buffers. 240950974Swpaul */ 241050974Swpaul for (i = 0; i < SIS_TX_LIST_CNT; i++) { 241181713Swpaul if (sc->sis_ldata.sis_tx_list[i].sis_mbuf != NULL) { 241281713Swpaul bus_dmamap_unload(sc->sis_tag, 241381713Swpaul sc->sis_ldata.sis_tx_list[i].sis_map); 241481713Swpaul bus_dmamap_destroy(sc->sis_tag, 241581713Swpaul sc->sis_ldata.sis_tx_list[i].sis_map); 241681713Swpaul m_freem(sc->sis_ldata.sis_tx_list[i].sis_mbuf); 241781713Swpaul sc->sis_ldata.sis_tx_list[i].sis_mbuf = NULL; 241850974Swpaul } 241950974Swpaul } 242050974Swpaul 242181713Swpaul bzero(sc->sis_ldata.sis_tx_list, 242281713Swpaul sizeof(sc->sis_ldata.sis_tx_list)); 242350974Swpaul 242467087Swpaul SIS_UNLOCK(sc); 242567087Swpaul 242650974Swpaul return; 242750974Swpaul} 242850974Swpaul 242950974Swpaul/* 243050974Swpaul * Stop all chip I/O so that the kernel's probe routines don't 243150974Swpaul * get confused by errant DMAs when rebooting. 243250974Swpaul */ 2433102334Salfredstatic void 2434102334Salfredsis_shutdown(dev) 243550974Swpaul device_t dev; 243650974Swpaul{ 243750974Swpaul struct sis_softc *sc; 243850974Swpaul 243950974Swpaul sc = device_get_softc(dev); 244067087Swpaul SIS_LOCK(sc); 244150974Swpaul sis_reset(sc); 244250974Swpaul sis_stop(sc); 244367087Swpaul SIS_UNLOCK(sc); 244450974Swpaul 244550974Swpaul return; 244650974Swpaul} 2447