/* $NetBSD: isp_sbus.c,v 1.81 2012/09/07 22:37:27 macallan Exp $ */ /* * SBus specific probe and attach routines for Qlogic ISP SCSI adapters. * * Copyright (C) 1997, 1998, 1999 National Aeronautics & Space Administration * All rights reserved. * * Additional Copyright (C) 2000-2007 by Matthew Jacob * 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. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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. * */ #include __KERNEL_RCSID(0, "$NetBSD: isp_sbus.c,v 1.81 2012/09/07 22:37:27 macallan Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include "opt_isp.h" static void isp_sbus_reset0(ispsoftc_t *); static void isp_sbus_reset1(ispsoftc_t *); static int isp_sbus_intr(void *); static int isp_sbus_rd_isr(ispsoftc_t *, uint32_t *, uint16_t *, uint16_t *); static uint32_t isp_sbus_rd_reg(ispsoftc_t *, int); static void isp_sbus_wr_reg (ispsoftc_t *, int, uint32_t); static int isp_sbus_mbxdma(ispsoftc_t *); static int isp_sbus_dmasetup(ispsoftc_t *, XS_T *, void *); static void isp_sbus_dmateardown(ispsoftc_t *, XS_T *, uint32_t); #ifndef ISP_DISABLE_FW #include #else #define ISP_1000_RISC_CODE NULL #endif static const struct ispmdvec mdvec = { isp_sbus_rd_isr, isp_sbus_rd_reg, isp_sbus_wr_reg, isp_sbus_mbxdma, isp_sbus_dmasetup, isp_sbus_dmateardown, isp_sbus_reset0, isp_sbus_reset1, NULL, ISP_1000_RISC_CODE, 0, 0 }; struct isp_sbussoftc { ispsoftc_t sbus_isp; sdparam sbus_dev; struct scsipi_channel sbus_chan; bus_space_tag_t sbus_bustag; bus_space_handle_t sbus_reg; int sbus_node; int sbus_pri; struct ispmdvec sbus_mdvec; bus_dmamap_t *sbus_dmamap; int16_t sbus_poff[_NREG_BLKS]; }; static int isp_match(device_t, cfdata_t, void *); static void isp_sbus_attach(device_t, device_t, void *); CFATTACH_DECL_NEW(isp_sbus, sizeof (struct isp_sbussoftc), isp_match, isp_sbus_attach, NULL, NULL); static int isp_match(device_t parent, cfdata_t cf, void *aux) { int rv; struct sbus_attach_args *sa = aux; rv = (strcmp(cf->cf_name, sa->sa_name) == 0 || strcmp("PTI,ptisp", sa->sa_name) == 0 || strcmp("ptisp", sa->sa_name) == 0 || strcmp("SUNW,isp", sa->sa_name) == 0 || strcmp("QLGC,isp", sa->sa_name) == 0); return (rv); } static void isp_sbus_attach(device_t parent, device_t self, void *aux) { int freq, ispburst, sbusburst; struct sbus_attach_args *sa = aux; struct isp_sbussoftc *sbc = device_private(self); struct sbus_softc *sbsc = device_private(parent); ispsoftc_t *isp = &sbc->sbus_isp; isp->isp_osinfo.dev = self; printf(" for %s\n", sa->sa_name); isp->isp_nchan = isp->isp_osinfo.adapter.adapt_nchannels = 1; sbc->sbus_bustag = sa->sa_bustag; if (sa->sa_nintr != 0) sbc->sbus_pri = sa->sa_pri; sbc->sbus_mdvec = mdvec; if (sa->sa_npromvaddrs) { sbus_promaddr_to_handle(sa->sa_bustag, sa->sa_promvaddrs[0], &sbc->sbus_reg); } else { if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset, sa->sa_size, 0, &sbc->sbus_reg) != 0) { aprint_error_dev(self, "cannot map registers\n"); return; } } sbc->sbus_node = sa->sa_node; freq = prom_getpropint(sa->sa_node, "clock-frequency", 0); if (freq) { /* * Convert from HZ to MHz, rounding up. */ freq = (freq + 500000)/1000000; } sbc->sbus_mdvec.dv_clock = freq; /* * Now figure out what the proper burst sizes, etc., to use. * Unfortunately, there is no ddi_dma_burstsizes here which * walks up the tree finding the limiting burst size node (if * any). */ sbusburst = sbsc->sc_burst; if (sbusburst == 0) sbusburst = SBUS_BURST_32 - 1; ispburst = prom_getpropint(sa->sa_node, "burst-sizes", -1); if (ispburst == -1) { ispburst = sbusburst; } ispburst &= sbusburst; ispburst &= ~(1 << 7); ispburst &= ~(1 << 6); sbc->sbus_mdvec.dv_conf1 = 0; if (ispburst & (1 << 5)) { sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_32; } else if (ispburst & (1 << 4)) { sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_16; } else if (ispburst & (1 << 3)) { sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_BURST8 | BIU_SBUS_CONF1_FIFO_8; } if (sbc->sbus_mdvec.dv_conf1) { sbc->sbus_mdvec.dv_conf1 |= BIU_BURST_ENABLE; } isp->isp_mdvec = &sbc->sbus_mdvec; isp->isp_bustype = ISP_BT_SBUS; isp->isp_type = ISP_HA_SCSI_UNKNOWN; isp->isp_param = &sbc->sbus_dev; isp->isp_dmatag = sa->sa_dmatag; ISP_MEMZERO(isp->isp_param, sizeof (sdparam)); isp->isp_osinfo.chan = &sbc->sbus_chan; sbc->sbus_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF; sbc->sbus_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = SBUS_MBOX_REGS_OFF; sbc->sbus_poff[SXP_BLOCK >> _BLK_REG_SHFT] = SBUS_SXP_REGS_OFF; sbc->sbus_poff[RISC_BLOCK >> _BLK_REG_SHFT] = SBUS_RISC_REGS_OFF; sbc->sbus_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF; /* Establish interrupt channel */ bus_intr_establish(sbc->sbus_bustag, sbc->sbus_pri, IPL_BIO, isp_sbus_intr, sbc); /* * Set up logging levels. */ #ifdef ISP_LOGDEFAULT isp->isp_dblev = ISP_LOGDEFAULT; #else isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR; if (bootverbose) isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO; #ifdef SCSIDEBUG isp->isp_dblev |= ISP_LOGDEBUG1|ISP_LOGDEBUG2; #endif #ifdef DEBUG isp->isp_dblev |= ISP_LOGDEBUG0; #endif #endif isp->isp_confopts = device_cfdata(self)->cf_flags; SDPARAM(isp, 0)->role = ISP_DEFAULT_ROLES; /* * There's no tool on sparc to set NVRAM for ISPs, so ignore it. */ isp->isp_confopts |= ISP_CFG_NONVRAM; /* * Mark things if we're a PTI SBus adapter. */ if (strcmp("PTI,ptisp", sa->sa_name) == 0 || strcmp("ptisp", sa->sa_name) == 0) { SDPARAM(isp, 0)->isp_ptisp = 1; } ISP_LOCK(isp); isp_reset(isp, 1); if (isp->isp_state != ISP_RESETSTATE) { ISP_UNLOCK(isp); return; } ISP_ENABLE_INTS(isp); isp_init(isp); if (isp->isp_state != ISP_INITSTATE) { isp_uninit(isp); ISP_UNLOCK(isp); return; } /* * do generic attach. */ ISP_UNLOCK(isp); isp_attach(isp); } static void isp_sbus_reset0(ispsoftc_t *isp) { ISP_DISABLE_INTS(isp); } static void isp_sbus_reset1(ispsoftc_t *isp) { ISP_ENABLE_INTS(isp); } static int isp_sbus_intr(void *arg) { uint32_t isr; uint16_t sema, mbox; ispsoftc_t *isp = arg; if (ISP_READ_ISR(isp, &isr, &sema, &mbox) == 0) { isp->isp_intbogus++; return (0); } else { struct isp_sbussoftc *sbc = arg; sbc->sbus_isp.isp_osinfo.onintstack = 1; isp_intr(isp, isr, sema, mbox); sbc->sbus_isp.isp_osinfo.onintstack = 0; return (1); } } #define IspVirt2Off(a, x) \ (((struct isp_sbussoftc *)a)->sbus_poff[((x) & _BLK_REG_MASK) >> \ _BLK_REG_SHFT] + ((x) & 0xff)) #define BXR2(sbc, off) \ bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, off) static int isp_sbus_rd_isr(ispsoftc_t *isp, uint32_t *isrp, uint16_t *semap, uint16_t *mbp) { struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; uint32_t isr; uint16_t sema; isr = BXR2(sbc, IspVirt2Off(isp, BIU_ISR)); sema = BXR2(sbc, IspVirt2Off(isp, BIU_SEMA)); isp_prt(isp, ISP_LOGDEBUG3, "ISR 0x%x SEMA 0x%x", isr, sema); isr &= INT_PENDING_MASK(isp); sema &= BIU_SEMA_LOCK; if (isr == 0 && sema == 0) { return (0); } *isrp = isr; if ((*semap = sema) != 0) { *mbp = BXR2(sbc, IspVirt2Off(isp, OUTMAILBOX0)); } return (1); } static uint32_t isp_sbus_rd_reg(ispsoftc_t *isp, int regoff) { struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; offset += (regoff & 0xff); return (bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, offset)); } static void isp_sbus_wr_reg(ispsoftc_t *isp, int regoff, uint32_t val) { struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; offset += (regoff & 0xff); bus_space_write_2(sbc->sbus_bustag, sbc->sbus_reg, offset, val); } static int isp_sbus_mbxdma(ispsoftc_t *isp) { struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; bus_dma_segment_t reqseg, rspseg; int reqrs, rsprs, i, progress; size_t n; bus_size_t len; if (isp->isp_rquest_dma) return (0); n = isp->isp_maxcmds * sizeof (isp_hdl_t); isp->isp_xflist = (isp_hdl_t *) malloc(n, M_DEVBUF, M_WAITOK); if (isp->isp_xflist == NULL) { isp_prt(isp, ISP_LOGERR, "cannot alloc xflist array"); return (1); } ISP_MEMZERO(isp->isp_xflist, n); for (n = 0; n < isp->isp_maxcmds - 1; n++) { isp->isp_xflist[n].cmd = &isp->isp_xflist[n+1]; } isp->isp_xffree = isp->isp_xflist; n = sizeof (bus_dmamap_t) * isp->isp_maxcmds; sbc->sbus_dmamap = (bus_dmamap_t *) malloc(n, M_DEVBUF, M_WAITOK); if (sbc->sbus_dmamap == NULL) { free(isp->isp_xflist, M_DEVBUF); isp->isp_xflist = NULL; isp_prt(isp, ISP_LOGERR, "cannot alloc dmamap array"); return (1); } for (i = 0; i < isp->isp_maxcmds; i++) { /* Allocate a DMA handle */ if (bus_dmamap_create(isp->isp_dmatag, MAXPHYS, 1, MAXPHYS, 1 << 24, BUS_DMA_NOWAIT, &sbc->sbus_dmamap[i]) != 0) { isp_prt(isp, ISP_LOGERR, "cmd DMA maps create error"); break; } } if (i < isp->isp_maxcmds) { while (--i >= 0) { bus_dmamap_destroy(isp->isp_dmatag, sbc->sbus_dmamap[i]); } free(isp->isp_xflist, M_DEVBUF); free(sbc->sbus_dmamap, M_DEVBUF); isp->isp_xflist = NULL; sbc->sbus_dmamap = NULL; return (1); } /* * Allocate and map the request and response queues */ progress = 0; len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &reqseg, 1, &reqrs, BUS_DMA_NOWAIT)) { goto dmafail; } progress++; if (bus_dmamem_map(isp->isp_dmatag, &reqseg, reqrs, len, (void *)&isp->isp_rquest, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { goto dmafail; } progress++; if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 1 << 24, BUS_DMA_NOWAIT, &isp->isp_rqdmap) != 0) { goto dmafail; } progress++; if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rqdmap, isp->isp_rquest, len, NULL, BUS_DMA_NOWAIT) != 0) { goto dmafail; } progress++; isp->isp_rquest_dma = isp->isp_rqdmap->dm_segs[0].ds_addr; len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp)); if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &rspseg, 1, &rsprs, BUS_DMA_NOWAIT)) { goto dmafail; } progress++; if (bus_dmamem_map(isp->isp_dmatag, &rspseg, rsprs, len, (void *)&isp->isp_result, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { goto dmafail; } progress++; if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 1 << 24, BUS_DMA_NOWAIT, &isp->isp_rsdmap) != 0) { goto dmafail; } progress++; if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rsdmap, isp->isp_result, len, NULL, BUS_DMA_NOWAIT) != 0) { goto dmafail; } isp->isp_result_dma = isp->isp_rsdmap->dm_segs[0].ds_addr; return (0); dmafail: isp_prt(isp, ISP_LOGERR, "Mailbox DMA Setup Failure"); if (progress >= 8) { bus_dmamap_unload(isp->isp_dmatag, isp->isp_rsdmap); } if (progress >= 7) { bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rsdmap); } if (progress >= 6) { bus_dmamem_unmap(isp->isp_dmatag, isp->isp_result, ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp))); } if (progress >= 5) { bus_dmamem_free(isp->isp_dmatag, &rspseg, rsprs); } if (progress >= 4) { bus_dmamap_unload(isp->isp_dmatag, isp->isp_rqdmap); } if (progress >= 3) { bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rqdmap); } if (progress >= 2) { bus_dmamem_unmap(isp->isp_dmatag, isp->isp_rquest, ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp))); } if (progress >= 1) { bus_dmamem_free(isp->isp_dmatag, &reqseg, reqrs); } for (i = 0; i < isp->isp_maxcmds; i++) { bus_dmamap_destroy(isp->isp_dmatag, sbc->sbus_dmamap[i]); } free(sbc->sbus_dmamap, M_DEVBUF); free(isp->isp_xflist, M_DEVBUF); isp->isp_xflist = NULL; sbc->sbus_dmamap = NULL; return (1); } /* * Map a DMA request. * We're guaranteed that rq->req_handle is a value from 1 to isp->isp_maxcmds. */ static int isp_sbus_dmasetup(struct ispsoftc *isp, struct scsipi_xfer *xs, void *arg) { struct isp_sbussoftc *sbc = (struct isp_sbussoftc *)isp; ispreq_t *rq = arg; bus_dmamap_t dmap; bus_dma_segment_t *dm_segs; uint32_t nsegs, hidx; isp_ddir_t ddir; hidx = isp_handle_index(isp, rq->req_handle); if (hidx == ISP_BAD_HANDLE_INDEX) { XS_SETERR(xs, HBA_BOTCH); return (CMD_COMPLETE); } dmap = sbc->sbus_dmamap[hidx]; if (xs->datalen == 0) { ddir = ISP_NOXFR; nsegs = 0; dm_segs = NULL; } else { int error; uint32_t flag, flg2; if (xs->xs_control & XS_CTL_DATA_IN) { flg2 = BUS_DMASYNC_PREREAD; flag = BUS_DMA_READ; ddir = ISP_FROM_DEVICE; } else { flg2 = BUS_DMASYNC_PREWRITE; flag = BUS_DMA_WRITE; ddir = ISP_TO_DEVICE; } error = bus_dmamap_load(isp->isp_dmatag, dmap, xs->data, xs->datalen, NULL, ((xs->xs_control & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK) | BUS_DMA_STREAMING | flag); if (error) { isp_prt(isp, ISP_LOGWARN, "unable to load DMA (%d)", error); XS_SETERR(xs, HBA_BOTCH); if (error == EAGAIN || error == ENOMEM) { return (CMD_EAGAIN); } else { return (CMD_COMPLETE); } } dm_segs = dmap->dm_segs; nsegs = dmap->dm_nsegs; bus_dmamap_sync(isp->isp_dmatag, dmap, 0, dmap->dm_mapsize, flg2); } if (isp_send_cmd(isp, rq, dm_segs, nsegs, xs->datalen, ddir) != CMD_QUEUED) { return (CMD_EAGAIN); } else { return (CMD_QUEUED); } } static void isp_sbus_dmateardown(ispsoftc_t *isp, XS_T *xs, uint32_t handle) { struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; bus_dmamap_t dmap; uint32_t hidx; hidx = isp_handle_index(isp, handle); if (hidx == ISP_BAD_HANDLE_INDEX) { isp_xs_prt(isp, xs, ISP_LOGERR, "bad handle on teardown"); return; } dmap = sbc->sbus_dmamap[hidx]; bus_dmamap_sync(isp->isp_dmatag, dmap, 0, xs->datalen, (xs->xs_control & XS_CTL_DATA_IN)? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); bus_dmamap_unload(isp->isp_dmatag, dmap); }