From owner-freebsd-sparc64@FreeBSD.ORG Sun Mar 22 21:40:06 2009 Return-Path: Delivered-To: freebsd-sparc64@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 51C7210656CE for ; Sun, 22 Mar 2009 21:40:06 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 3F80E8FC1B for ; Sun, 22 Mar 2009 21:40:06 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.14.3/8.14.3) with ESMTP id n2MLe60a064889 for ; Sun, 22 Mar 2009 21:40:06 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.3/8.14.3/Submit) id n2MLe61K064888; Sun, 22 Mar 2009 21:40:06 GMT (envelope-from gnats) Date: Sun, 22 Mar 2009 21:40:06 GMT Message-Id: <200903222140.n2MLe61K064888@freefall.freebsd.org> To: freebsd-sparc64@FreeBSD.org From: dfilter@FreeBSD.ORG (dfilter service) Cc: Subject: Re: sparc64/131371: commit references a PR X-BeenThere: freebsd-sparc64@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: dfilter service List-Id: Porting FreeBSD to the Sparc List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 22 Mar 2009 21:40:06 -0000 The following reply was made to PR sparc64/131371; it has been noted by GNATS. From: dfilter@FreeBSD.ORG (dfilter service) To: bug-followup@FreeBSD.org Cc: Subject: Re: sparc64/131371: commit references a PR Date: Sun, 22 Mar 2009 21:38:45 +0000 (UTC) Author: marius Date: Sun Mar 22 21:38:24 2009 New Revision: 190290 URL: http://svn.freebsd.org/changeset/base/190290 Log: MFC: r190109 - Ensure we find no unexpected partner. - Failing to register as interrupt controller during attach shouldn't be fatal so just inform about this instead of panicing. - Disable rerun of the streaming cache as workaround for a silicon bug of certain Psycho versions. - Remove the comment regarding lack of newbus'ified bus_dma(9) as being able to associate a DMA tag with a device would allow to implement CDMA flushing/syncing in bus_dmamap_sync(9) but that would totally kill performance. Given that for devices not behind a PCI-PCI bridge the host-to-PCI bridges also only do CDMA flushing/syncing based on interrupts there's no additional disadvantage for polling(4) callbacks in the case schizo(4) has to do the CDMA flushing/syncing but rather a general problem. - Don't panic if the power failure, power management or over-temperature interrupts doesn't exist as these aren't mandatory and not available with all controllers (not even Psychos). [1] - Take advantage of KOBJMETHOD_END. - Remove some redundant variables. - Add missing const. PR: 131371 [1] Modified: stable/7/sys/ (props changed) stable/7/sys/contrib/pf/ (props changed) stable/7/sys/dev/ath/ath_hal/ (props changed) stable/7/sys/dev/cxgb/ (props changed) stable/7/sys/sparc64/pci/psycho.c stable/7/sys/sparc64/pci/psychovar.h Modified: stable/7/sys/sparc64/pci/psycho.c ============================================================================== --- stable/7/sys/sparc64/pci/psycho.c Sun Mar 22 21:31:02 2009 (r190289) +++ stable/7/sys/sparc64/pci/psycho.c Sun Mar 22 21:38:24 2009 (r190290) @@ -84,7 +84,7 @@ static void psycho_set_intr(struct psych driver_filter_t, driver_intr_t); static int psycho_find_intrmap(struct psycho_softc *, u_int, bus_addr_t *, bus_addr_t *, u_long *); -static driver_filter_t psycho_dmasync; +static driver_filter_t psycho_dma_sync_stub; static void psycho_intr_enable(void *); static void psycho_intr_disable(void *); static void psycho_intr_assign(void *); @@ -151,7 +151,7 @@ static device_method_t psycho_methods[] /* ofw_bus interface */ DEVMETHOD(ofw_bus_get_node, psycho_get_node), - { 0, 0 } + KOBJMETHOD_END }; static devclass_t psycho_devclass; @@ -176,7 +176,7 @@ struct psycho_icarg { bus_addr_t pica_clr; }; -struct psycho_dmasync { +struct psycho_dma_sync { struct psycho_softc *pds_sc; driver_filter_t *pds_handler; /* handler to call */ void *pds_arg; /* argument for the handler */ @@ -233,14 +233,14 @@ struct psycho_desc { const char *pd_name; }; -static const struct psycho_desc psycho_compats[] = { +static const struct psycho_desc const psycho_compats[] = { { "pci108e,8000", PSYCHO_MODE_PSYCHO, "Psycho compatible" }, { "pci108e,a000", PSYCHO_MODE_SABRE, "Sabre compatible" }, { "pci108e,a001", PSYCHO_MODE_SABRE, "Hummingbird compatible" }, { NULL, 0, NULL } }; -static const struct psycho_desc psycho_models[] = { +static const struct psycho_desc const psycho_models[] = { { "SUNW,psycho", PSYCHO_MODE_PSYCHO, "Psycho" }, { "SUNW,sabre", PSYCHO_MODE_SABRE, "Sabre" }, { NULL, 0, NULL } @@ -297,8 +297,8 @@ psycho_attach(device_t dev) phandle_t child, node; uint32_t dvmabase, prop, prop_array[2]; int32_t rev; - u_int ver; - int i, n, nrange, rid; + u_int rerun, ver; + int i, n; node = ofw_bus_get_node(dev); sc = device_get_softc(dev); @@ -316,7 +316,7 @@ psycho_attach(device_t dev) * (2) the shared Psycho configuration registers */ if (sc->sc_mode == PSYCHO_MODE_PSYCHO) { - rid = 2; + i = 2; sc->sc_pcictl = bus_get_resource_start(dev, SYS_RES_MEMORY, 0) - bus_get_resource_start(dev, SYS_RES_MEMORY, 2); @@ -333,18 +333,18 @@ psycho_attach(device_t dev) /* NOTREACHED */ } } else { - rid = 0; + i = 0; sc->sc_pcictl = PSR_PCICTL0; sc->sc_half = 0; } - sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, + sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, (sc->sc_mode == PSYCHO_MODE_PSYCHO ? RF_SHAREABLE : 0) | RF_ACTIVE); if (sc->sc_mem_res == NULL) panic("%s: could not allocate registers", __func__); /* - * Match other Psycho's that are already configured against + * Match other Psychos that are already configured against * the base physical address. This will be the same for a * pair of devices that share register space. */ @@ -364,6 +364,8 @@ psycho_attach(device_t dev) panic("%s: could not malloc mutex", __func__); mtx_init(sc->sc_mtx, "pcib_mtx", NULL, MTX_SPIN); } else { + if (sc->sc_mode != PSYCHO_MODE_PSYCHO) + panic("%s: no partner expected", __func__); if (mtx_initialized(osc->sc_mtx) == 0) panic("%s: mutex not initialized", __func__); sc->sc_mtx = osc->sc_mtx; @@ -409,16 +411,17 @@ psycho_attach(device_t dev) case 0: dr |= DIAG_RTRY_DIS; dr &= ~DIAG_DWSYNC_DIS; - /* XXX need to also disable rerun of the streaming buffers. */ + rerun = 0; break; case 1: csr &= ~PCICTL_ARB_PARK; dr |= DIAG_RTRY_DIS | DIAG_DWSYNC_DIS; - /* XXX need to also disable rerun of the streaming buffers. */ + rerun = 0; break; default: dr |= DIAG_DWSYNC_DIS; dr &= ~DIAG_RTRY_DIS; + rerun = 1; break; } @@ -461,13 +464,12 @@ psycho_attach(device_t dev) rman_manage_region(&sc->sc_pci_mem_rman, 0, PSYCHO_MEM_SIZE) != 0) panic("%s: failed to set up memory rman", __func__); - nrange = OF_getprop_alloc(node, "ranges", sizeof(*range), - (void **)&range); + n = OF_getprop_alloc(node, "ranges", sizeof(*range), (void **)&range); /* * Make sure that the expected ranges are present. The * OFW_PCI_CS_MEM64 one is not currently used though. */ - if (nrange != PSYCHO_NRANGE) + if (n != PSYCHO_NRANGE) panic("%s: unsupported number of ranges", __func__); /* * Find the addresses of the various bus spaces. @@ -494,7 +496,8 @@ psycho_attach(device_t dev) /* * Hunt through all the interrupt mapping regs and register * our interrupt controller for the corresponding interrupt - * vectors. + * vectors. We do this early in order to be able to catch + * stray interrupts. */ for (n = 0; n <= PSYCHO_MAX_INO; n++) { if (psycho_find_intrmap(sc, n, &intrmap, &intrclr, @@ -524,22 +527,23 @@ psycho_attach(device_t dev) INTMAP_ENABLE(INTMAP_VEC(sc->sc_ign, n), PCPU_GET(mid))); #endif - if (intr_controller_register(INTMAP_VEC(sc->sc_ign, n), - &psycho_ic, pica) != 0) - panic("%s: could not register interrupt " - "controller for INO %d", __func__, n); + i = intr_controller_register(INTMAP_VEC(sc->sc_ign, n), + &psycho_ic, pica); + if (i != 0) + device_printf(dev, "could not register " + "interrupt controller for INO %d (%d)\n", + n, i); } - if (sc->sc_mode == PSYCHO_MODE_PSYCHO) { - /* Initialize the counter-timer. */ + if (sc->sc_mode == PSYCHO_MODE_PSYCHO) sparc64_counter_init(device_get_nameunit(dev), rman_get_bustag(sc->sc_mem_res), rman_get_bushandle(sc->sc_mem_res), PSR_TC0); - } /* * Set up IOMMU and PCI configuration if we're the first - * of a pair of Psycho's to arrive here. + * of a pair of Psychos to arrive here or a Hummingbird + * or Sabre. * * We should calculate a TSB size based on amount of RAM * and number of bus controllers and number and type of @@ -557,10 +561,10 @@ psycho_attach(device_t dev) else sc->sc_is->is_pmaxaddr = IOMMU_MAXADDR(PSYCHO_IOMMU_BITS); - sc->sc_is->is_sb[0] = 0; - sc->sc_is->is_sb[1] = 0; + sc->sc_is->is_sb[0] = sc->sc_is->is_sb[1] = 0; if (OF_getproplen(node, "no-streaming-cache") < 0) sc->sc_is->is_sb[0] = sc->sc_pcictl + PCR_STRBUF; + sc->sc_is->is_flags |= (rerun != 1) ? IOMMU_RERUN_DISABLE : 0; psycho_iommu_init(sc, 3, dvmabase); } else { /* Just copy IOMMU state, config tag and address. */ @@ -695,12 +699,20 @@ psycho_set_intr(struct psycho_softc *sc, rid = index; sc->sc_irq_res[index] = bus_alloc_resource_any(sc->sc_dev, SYS_RES_IRQ, &rid, RF_ACTIVE); + if (sc->sc_irq_res[index] == NULL && intrmap >= PSR_POWER_INT_MAP) { + /* + * These interrupts aren't mandatory and not available + * with all controllers (not even Psychos). + */ + return; + } if (sc->sc_irq_res[index] == NULL || INTIGN(vec = rman_get_start(sc->sc_irq_res[index])) != sc->sc_ign || INTVEC(PSYCHO_READ8(sc, intrmap)) != vec || intr_vectors[vec].iv_ic != &psycho_ic || - bus_setup_intr(sc->sc_dev, sc->sc_irq_res[index], INTR_TYPE_MISC, - filt, intr, sc, &sc->sc_ihand[index]) != 0) + bus_setup_intr(sc->sc_dev, sc->sc_irq_res[index], + INTR_TYPE_MISC | INTR_FAST, filt, intr, sc, + &sc->sc_ihand[index]) != 0) panic("%s: failed to set up interrupt %d", __func__, index); } @@ -1066,9 +1078,9 @@ psycho_read_ivar(device_t dev, device_t } static int -psycho_dmasync(void *arg) +psycho_dma_sync_stub(void *arg) { - struct psycho_dmasync *pds = arg; + struct psycho_dma_sync *pds = arg; (void)PCIB_READ_CONFIG(pds->pds_ppb, pds->pds_bus, pds->pds_slot, pds->pds_func, PCIR_VENDOR, 2); @@ -1126,7 +1138,7 @@ psycho_setup_intr(device_t dev, device_t devclass_t pci_devclass; device_t cdev, pdev, pcidev; struct psycho_softc *sc; - struct psycho_dmasync *pds; + struct psycho_dma_sync *pds; u_long vec; int error; @@ -1143,17 +1155,12 @@ psycho_setup_intr(device_t dev, device_t } /* - * The Sabre-APB-combination has a bug where it does not drain - * DMA write data for devices behind additional PCI-PCI bridges - * underneath the APB PCI-PCI bridge. The workaround is to do - * a read on the farest PCI-PCI bridge followed by a read of the - * PCI DMA write sync register of the Sabre. - * XXX installing the wrapper for an affected device and the - * actual workaround in psycho_dmasync() should be moved to - * psycho(4)-specific bus_dma_tag_create() and bus_dmamap_sync() - * methods, respectively, once DMA tag creation is newbus'ified, - * so the workaround isn't only applied for interrupt handlers - * but also for polling(4) callbacks. + * The Sabre-APB-combination does not automatically flush DMA + * write data for devices behind additional PCI-PCI bridges + * underneath the APB PCI-PCI bridge. The procedure for a + * manual flush is to do a PIO read on the far side of the + * farthest PCI-PCI bridge followed by a read of the PCI DMA + * write sync register of the Sabre. */ if (sc->sc_mode == PSYCHO_MODE_SABRE) { pds = malloc(sizeof(*pds), M_DEVBUF, M_NOWAIT | M_ZERO); @@ -1192,20 +1199,20 @@ psycho_setup_intr(device_t dev, device_t pds->pds_func = pci_get_function(pcidev); if (bootverbose) device_printf(dev, "installed DMA sync " - "workaround for device %d.%d on bus %d\n", + "wrapper for device %d.%d on bus %d\n", pds->pds_slot, pds->pds_func, pds->pds_bus); if (intr == NULL) { pds->pds_handler = filt; error = bus_generic_setup_intr(dev, child, - ires, flags, psycho_dmasync, intr, pds, - cookiep); + ires, flags, psycho_dma_sync_stub, intr, + pds, cookiep); } else { pds->pds_handler = (driver_filter_t *)intr; error = bus_generic_setup_intr(dev, child, ires, flags, filt, - (driver_intr_t *)psycho_dmasync, pds, - cookiep); + (driver_intr_t *)psycho_dma_sync_stub, + pds, cookiep); } } else error = bus_generic_setup_intr(dev, child, ires, @@ -1227,7 +1234,7 @@ psycho_teardown_intr(device_t dev, devic void *cookie) { struct psycho_softc *sc; - struct psycho_dmasync *pds; + struct psycho_dma_sync *pds; int error; sc = device_get_softc(dev); @@ -1315,8 +1322,8 @@ psycho_activate_resource(device_t bus, d type, rid, r)); if (type == SYS_RES_MEMORY) { /* - * Need to memory-map the device space, as some drivers depend - * on the virtual address being set and useable. + * Need to memory-map the device space, as some drivers + * depend on the virtual address being set and usable. */ error = sparc64_bus_mem_map(rman_get_bustag(r), rman_get_bushandle(r), rman_get_size(r), 0, 0, &p); Modified: stable/7/sys/sparc64/pci/psychovar.h ============================================================================== --- stable/7/sys/sparc64/pci/psychovar.h Sun Mar 22 21:31:02 2009 (r190289) +++ stable/7/sys/sparc64/pci/psychovar.h Sun Mar 22 21:38:24 2009 (r190290) @@ -49,8 +49,8 @@ struct psycho_softc { phandle_t sc_node; /* Firmware node */ u_int sc_mode; -#define PSYCHO_MODE_SABRE 1 -#define PSYCHO_MODE_PSYCHO 2 +#define PSYCHO_MODE_SABRE 0 +#define PSYCHO_MODE_PSYCHO 1 /* Bus A or B of a psycho pair? */ u_int sc_half; _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscribe@freebsd.org"