/* * Copyright (c) 1999, 2000 Matthew R. Green * All rights reserved. * Copyright 2001 by Thomas Moestl . 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. * * from: NetBSD: psycho.c,v 1.39 2001/10/07 20:30:41 eeh Exp * * $FreeBSD$ */ /* * Support for `psycho' and `psycho+' UPA to PCI bridge and * UltraSPARC IIi and IIe `sabre' PCI controllers. */ #include "opt_psycho.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "pcib_if.h" #include "sparcbus_if.h" static void psycho_get_ranges(phandle_t, struct upa_ranges **, int *); static void psycho_set_intr(struct psycho_softc *, int, device_t, bus_addr_t, int, driver_intr_t); static int psycho_find_intrmap(struct psycho_softc *, int, bus_addr_t *, bus_addr_t *, u_long *); static void psycho_intr_stub(void *); #ifdef PSYCHO_STRAY static void psycho_intr_stray(void *); #endif static bus_space_tag_t psycho_alloc_bus_tag(struct psycho_softc *, int); /* Interrupt handlers */ static void psycho_ue(void *); static void psycho_ce(void *); static void psycho_bus_a(void *); static void psycho_bus_b(void *); static void psycho_powerfail(void *); #ifdef PSYCHO_MAP_WAKEUP static void psycho_wakeup(void *); #endif /* IOMMU support */ static void psycho_iommu_init(struct psycho_softc *, int); static ofw_pci_binit_t psycho_binit; /* * bus space and bus dma support for UltraSPARC `psycho'. note that most * of the bus dma support is provided by the iommu dvma controller. */ static int psycho_dmamap_create(bus_dma_tag_t, bus_dma_tag_t, int, bus_dmamap_t *); static int psycho_dmamap_destroy(bus_dma_tag_t, bus_dma_tag_t, bus_dmamap_t); static int psycho_dmamap_load(bus_dma_tag_t, bus_dma_tag_t, bus_dmamap_t, void *, bus_size_t, bus_dmamap_callback_t *, void *, int); static void psycho_dmamap_unload(bus_dma_tag_t, bus_dma_tag_t, bus_dmamap_t); static void psycho_dmamap_sync(bus_dma_tag_t, bus_dma_tag_t, bus_dmamap_t, bus_dmasync_op_t); static int psycho_dmamem_alloc(bus_dma_tag_t, bus_dma_tag_t, void **, int, bus_dmamap_t *); static void psycho_dmamem_free(bus_dma_tag_t, bus_dma_tag_t, void *, bus_dmamap_t); /* * autoconfiguration */ static int psycho_probe(device_t); static int psycho_attach(device_t); static int psycho_read_ivar(device_t, device_t, int, u_long *); static int psycho_setup_intr(device_t, device_t, struct resource *, int, driver_intr_t *, void *, void **); static int psycho_teardown_intr(device_t, device_t, struct resource *, void *); static struct resource *psycho_alloc_resource(device_t, device_t, int, int *, u_long, u_long, u_long, u_int); static int psycho_activate_resource(device_t, device_t, int, int, struct resource *); static int psycho_deactivate_resource(device_t, device_t, int, int, struct resource *); static int psycho_release_resource(device_t, device_t, int, int, struct resource *); static int psycho_maxslots(device_t); static u_int32_t psycho_read_config(device_t, u_int, u_int, u_int, u_int, int); static void psycho_write_config(device_t, u_int, u_int, u_int, u_int, u_int32_t, int); static int psycho_route_interrupt(device_t, device_t, int); static int psycho_intr_pending(device_t, int); static bus_space_handle_t psycho_get_bus_handle(device_t dev, enum sbbt_id id, bus_space_handle_t childhdl, bus_space_tag_t *tag); static device_method_t psycho_methods[] = { /* Device interface */ DEVMETHOD(device_probe, psycho_probe), DEVMETHOD(device_attach, psycho_attach), /* Bus interface */ DEVMETHOD(bus_print_child, bus_generic_print_child), DEVMETHOD(bus_read_ivar, psycho_read_ivar), DEVMETHOD(bus_setup_intr, psycho_setup_intr), DEVMETHOD(bus_teardown_intr, psycho_teardown_intr), DEVMETHOD(bus_alloc_resource, psycho_alloc_resource), DEVMETHOD(bus_activate_resource, psycho_activate_resource), DEVMETHOD(bus_deactivate_resource, psycho_deactivate_resource), DEVMETHOD(bus_release_resource, psycho_release_resource), /* pcib interface */ DEVMETHOD(pcib_maxslots, psycho_maxslots), DEVMETHOD(pcib_read_config, psycho_read_config), DEVMETHOD(pcib_write_config, psycho_write_config), DEVMETHOD(pcib_route_interrupt, psycho_route_interrupt), /* sparcbus interface */ DEVMETHOD(sparcbus_intr_pending, psycho_intr_pending), DEVMETHOD(sparcbus_get_bus_handle, psycho_get_bus_handle), { 0, 0 } }; static driver_t psycho_driver = { "pcib", psycho_methods, sizeof(struct psycho_softc), }; static devclass_t psycho_devclass; DRIVER_MODULE(psycho, nexus, psycho_driver, psycho_devclass, 0, 0); static int psycho_ndevs; static struct psycho_softc *psycho_softcs[4]; struct psycho_clr { struct psycho_softc *pci_sc; bus_addr_t pci_clr; /* clear register */ driver_intr_t *pci_handler; /* handler to call */ void *pci_arg; /* argument for the handler */ void *pci_cookie; /* interrupt cookie of parent bus */ }; struct psycho_strayclr { struct psycho_softc *psc_sc; bus_addr_t psc_clr; /* clear register */ }; #define PSYCHO_READ8(sc, off) \ bus_space_read_8((sc)->sc_bustag, (sc)->sc_bushandle, (off)) #define PSYCHO_WRITE8(sc, off, v) \ bus_space_write_8((sc)->sc_bustag, (sc)->sc_bushandle, (off), (v)) #define PCICTL_READ8(sc, off) \ PSYCHO_READ8((sc), (sc)->sc_pcictl + (off)) #define PCICTL_WRITE8(sc, off, v) \ PSYCHO_WRITE8((sc), (sc)->sc_pcictl + (off), (v)) /* * "sabre" is the UltraSPARC IIi onboard UPA to PCI bridge. It manages a * single PCI bus and does not have a streaming buffer. It often has an APB * (advanced PCI bridge) connected to it, which was designed specifically for * the IIi. The APB let's the IIi handle two independednt PCI buses, and * appears as two "simba"'s underneath the sabre. * * "psycho" and "psycho+" is a dual UPA to PCI bridge. It sits on the UPA bus * and manages two PCI buses. "psycho" has two 64-bit 33MHz buses, while * "psycho+" controls both a 64-bit 33Mhz and a 64-bit 66Mhz PCI bus. You * will usually find a "psycho+" since I don't think the original "psycho" * ever shipped, and if it did it would be in the U30. * * Each "psycho" PCI bus appears as a separate OFW node, but since they are * both part of the same IC, they only have a single register space. As such, * they need to be configured together, even though the autoconfiguration will * attach them separately. * * On UltraIIi machines, "sabre" itself usually takes pci0, with "simba" often * as pci1 and pci2, although they have been implemented with other PCI bus * numbers on some machines. * * On UltraII machines, there can be any number of "psycho+" ICs, each * providing two PCI buses. * * * XXXX The psycho/sabre node has an `interrupts' attribute. They contain * the values of the following interrupts in this order: * * PCI Bus Error (30) * DMA UE (2e) * DMA CE (2f) * Power Fail (25) * * We really should attach handlers for each. */ #define OFW_PCI_TYPE "pci" #define OFW_SABRE_MODEL "SUNW,sabre" #define OFW_SABRE_COMPAT "pci108e,a001" #define OFW_SIMBA_MODEL "SUNW,simba" #define OFW_PSYCHO_MODEL "SUNW,psycho" static int psycho_probe(device_t dev) { phandle_t node; char *dtype, *model; static char compat[32]; node = nexus_get_node(dev); if (OF_getprop(node, "compatible", compat, sizeof(compat)) == -1) compat[0] = '\0'; dtype = nexus_get_device_type(dev); model = nexus_get_model(dev); /* match on a type of "pci" and a sabre or a psycho */ if (nexus_get_reg(dev) != NULL && dtype != NULL && strcmp(dtype, OFW_PCI_TYPE) == 0 && ((model != NULL && (strcmp(model, OFW_SABRE_MODEL) == 0 || strcmp(model, OFW_PSYCHO_MODEL) == 0)) || strcmp(compat, OFW_SABRE_COMPAT) == 0)) { device_set_desc(dev, "U2P UPA-PCI bridge"); return (0); } return (ENXIO); } /* * SUNW,psycho initialisation .. * - find the per-psycho registers * - figure out the IGN. * - find our partner psycho * - configure ourselves * - bus range, bus, * - interrupt map, * - setup the chipsets. * - if we're the first of the pair, initialise the IOMMU, otherwise * just copy it's tags and addresses. */ static int psycho_attach(device_t dev) { struct psycho_softc *sc; struct psycho_softc *osc = NULL; struct psycho_softc *asc; struct upa_regs *reg; struct ofw_pci_bdesc obd; char compat[32]; char *model; phandle_t node; u_int64_t csr; u_long pcictl_offs, mlen; int psycho_br[2]; int n, i, nreg, rid; #if defined(PSYCHO_DEBUG) || defined(PSYCHO_STRAY) bus_addr_t map, clr; u_int64_t mr; #endif #ifdef PSYCHO_STRAY struct psycho_strayclr *sclr; #endif node = nexus_get_node(dev); sc = device_get_softc(dev); if (OF_getprop(node, "compatible", compat, sizeof(compat)) == -1) compat[0] = '\0'; sc->sc_node = node; sc->sc_dev = dev; sc->sc_dmatag = nexus_get_dmatag(dev); /* * call the model-specific initialisation routine. */ model = nexus_get_model(dev); if ((model != NULL && strcmp(model, OFW_SABRE_MODEL) == 0) || strcmp(compat, OFW_SABRE_COMPAT) == 0) { sc->sc_mode = PSYCHO_MODE_SABRE; if (model == NULL) model = "sabre"; } else if (model != NULL && strcmp(model, OFW_PSYCHO_MODEL) == 0) sc->sc_mode = PSYCHO_MODE_PSYCHO; else panic("psycho_attach: unknown model!"); /* * The psycho gets three register banks: * (0) per-PBM configuration and status registers * (1) per-PBM PCI configuration space, containing only the * PBM 256-byte PCI header * (2) the shared psycho configuration registers (struct psychoreg) * * XXX use the prom address for the psycho registers? we do so far. */ reg = nexus_get_reg(dev); nreg = nexus_get_nreg(dev); /* Register layouts are different. stuupid. */ if (sc->sc_mode == PSYCHO_MODE_PSYCHO) { if (nreg <= 2) panic("psycho_attach: %d not enough registers", nreg); sc->sc_basepaddr = (vm_offset_t)UPA_REG_PHYS(®[2]); mlen = UPA_REG_SIZE(®[2]); pcictl_offs = UPA_REG_PHYS(®[0]); } else { if (nreg <= 0) panic("psycho_attach: %d not enough registers", nreg); sc->sc_basepaddr = (vm_offset_t)UPA_REG_PHYS(®[0]); mlen = UPA_REG_SIZE(reg); pcictl_offs = sc->sc_basepaddr + PSR_PCICTL0; } /* * Match other psycho's that are already configured against * the base physical address. This will be the same for a * pair of devices that share register space. */ for (n = 0; n < psycho_ndevs && n < sizeof(psycho_softcs) / sizeof(psycho_softcs[0]); n++) { asc = (struct psycho_softc *)psycho_softcs[n]; if (asc == NULL || asc == sc) /* This entry is not there or it is me */ continue; if (asc->sc_basepaddr != sc->sc_basepaddr) /* This is an unrelated psycho */ continue; /* Found partner */ osc = asc; break; } if (osc == NULL) { rid = 0; sc->sc_mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, sc->sc_basepaddr, sc->sc_basepaddr + mlen - 1, mlen, RF_ACTIVE); if (sc->sc_mem_res == NULL || rman_get_start(sc->sc_mem_res) != sc->sc_basepaddr) panic("psycho_attach: can't allocate device memory"); sc->sc_bustag = rman_get_bustag(sc->sc_mem_res); sc->sc_bushandle = rman_get_bushandle(sc->sc_mem_res); } else { /* * There's another psycho using the same register space. Copy the * relevant stuff. */ sc->sc_mem_res = NULL; sc->sc_bustag = osc->sc_bustag; sc->sc_bushandle = osc->sc_bushandle; } if (pcictl_offs < sc->sc_basepaddr) panic("psycho_attach: bogus pci control register location"); sc->sc_pcictl = pcictl_offs - sc->sc_basepaddr; csr = PSYCHO_READ8(sc, PSR_CS); sc->sc_ign = 0x7c0; /* APB IGN is always 0x7c */ if (sc->sc_mode == PSYCHO_MODE_PSYCHO) sc->sc_ign = PSYCHO_GCSR_IGN(csr) << 6; device_printf(dev, "%s: impl %d, version %d: ign %x ", model, (int)PSYCHO_GCSR_IMPL(csr), (int)PSYCHO_GCSR_VERS(csr), sc->sc_ign); /* * Setup the PCI control register */ csr = PCICTL_READ8(sc, PCR_CS); csr |= PCICTL_MRLM | PCICTL_ARB_PARK | PCICTL_ERRINTEN | PCICTL_4ENABLE; csr &= ~(PCICTL_SERR | PCICTL_CPU_PRIO | PCICTL_ARB_PRIO | PCICTL_RTRYWAIT); PCICTL_WRITE8(sc, PCR_CS, csr); /* Grab the psycho ranges */ psycho_get_ranges(sc->sc_node, &sc->sc_range, &sc->sc_nrange); /* Initialize memory and i/o rmans */ sc->sc_io_rman.rm_type = RMAN_ARRAY; sc->sc_io_rman.rm_descr = "Psycho PCI I/O Ports"; if (rman_init(&sc->sc_io_rman) != 0 || rman_manage_region(&sc->sc_io_rman, 0, PSYCHO_IO_SIZE) != 0) panic("psycho_probe: failed to set up i/o rman"); sc->sc_mem_rman.rm_type = RMAN_ARRAY; sc->sc_mem_rman.rm_descr = "Psycho PCI Memory"; if (rman_init(&sc->sc_mem_rman) != 0 || rman_manage_region(&sc->sc_mem_rman, 0, PSYCHO_MEM_SIZE) != 0) panic("psycho_probe: failed to set up memory rman"); /* * Find the addresses of the various bus spaces. * There should not be multiple ones of one kind. * The physical start addresses of the ranges are the configuration, * memory and IO handles. */ for (n = 0; n < sc->sc_nrange; n++) { i = UPA_RANGE_CS(&sc->sc_range[n]); if (sc->sc_bh[i] != 0) panic("psycho_attach: duplicate range for space %d", i); sc->sc_bh[i] = UPA_RANGE_PHYS(&sc->sc_range[n]); } /* * Check that all needed handles are present. The PCI_CS_MEM64 one is * not currently used. */ for (n = 0; n < 3; n++) { if (sc->sc_bh[n] == 0) panic("psycho_attach: range %d missing", n); } /* allocate our tags */ sc->sc_memt = psycho_alloc_bus_tag(sc, PCI_MEMORY_BUS_SPACE); sc->sc_iot = psycho_alloc_bus_tag(sc, PCI_IO_BUS_SPACE); sc->sc_cfgt = psycho_alloc_bus_tag(sc, PCI_CONFIG_BUS_SPACE); if (bus_dma_tag_create(sc->sc_dmatag, 8, 1, 0, 0x3ffffffff, NULL, NULL, 0x3ffffffff, 0xff, 0xffffffff, 0, &sc->sc_dmat) != 0) panic("psycho_attach: bus_dma_tag_create failed"); /* Customize the tag */ sc->sc_dmat->cookie = sc; sc->sc_dmat->dmamap_create = psycho_dmamap_create; sc->sc_dmat->dmamap_destroy = psycho_dmamap_destroy; sc->sc_dmat->dmamap_load = psycho_dmamap_load; sc->sc_dmat->dmamap_unload = psycho_dmamap_unload; sc->sc_dmat->dmamap_sync = psycho_dmamap_sync; sc->sc_dmat->dmamem_alloc = psycho_dmamem_alloc; sc->sc_dmat->dmamem_free = psycho_dmamem_free; /* XXX: register as root dma tag (kluge). */ sparc64_root_dma_tag = sc->sc_dmat; /* Register the softc, this is needed for paired psychos. */ if (psycho_ndevs < sizeof(psycho_softcs) / sizeof(psycho_softcs[0])) psycho_softcs[psycho_ndevs] = sc; else device_printf(dev, "XXX: bump the number of psycho_softcs"); psycho_ndevs++; /* * And finally, if we're a sabre or the first of a pair of psycho's to * arrive here, start up the IOMMU and get a config space tag. */ if (osc == NULL) { /* * Establish handlers for interesting interrupts.... * * XXX We need to remember these and remove this to support * hotplug on the UPA/FHC bus. * * XXX Not all controllers have these, but installing them * is better than trying to sort through this mess. */ psycho_set_intr(sc, 0, dev, PSR_UE_INT_MAP, INTR_FAST, psycho_ue); psycho_set_intr(sc, 1, dev, PSR_CE_INT_MAP, 0, psycho_ce); psycho_set_intr(sc, 2, dev, PSR_PCIAERR_INT_MAP, INTR_FAST, psycho_bus_a); psycho_set_intr(sc, 4, dev, PSR_POWER_INT_MAP, INTR_FAST, psycho_powerfail); /* Psycho-specific initialization. */ if (sc->sc_mode == PSYCHO_MODE_PSYCHO) { /* * Sabres do not have the following two interrupts. */ psycho_set_intr(sc, 3, dev, PSR_PCIBERR_INT_MAP, INTR_FAST, psycho_bus_b); #ifdef PSYCHO_MAP_WAKEUP /* * psycho_wakeup() doesn't do anything useful right * now. */ psycho_set_intr(sc, 5, dev, PSR_PWRMGT_INT_MAP, 0, psycho_wakeup); #endif /* PSYCHO_MAP_WAKEUP */ /* Initialize the counter-timer. */ sparc64_counter_init(sc->sc_bustag, sc->sc_bushandle, PSR_TC0); } /* * Setup IOMMU and PCI configuration if we're the first * of a pair of psycho's to arrive here. * * We should calculate a TSB size based on amount of RAM * and number of bus controllers and number an type of * child devices. * * For the moment, 32KB should be more than enough. */ sc->sc_is = malloc(sizeof(struct iommu_state), M_DEVBUF, M_NOWAIT); if (sc->sc_is == NULL) panic("psycho_attach: malloc iommu_state failed"); sc->sc_is->is_sb[0] = 0; sc->sc_is->is_sb[1] = 0; if (OF_getproplen(sc->sc_node, "no-streaming-cache") < 0) sc->sc_is->is_sb[0] = sc->sc_pcictl + PCR_STRBUF; psycho_iommu_init(sc, 2); } else { /* Just copy IOMMU state, config tag and address */ sc->sc_is = osc->sc_is; if (OF_getproplen(sc->sc_node, "no-streaming-cache") < 0) sc->sc_is->is_sb[1] = sc->sc_pcictl + PCR_STRBUF; iommu_reset(sc->sc_is); } /* * Enable all interrupts, clear all interrupt states, and install an * interrupt handler for OBIO interrupts, which can be ISA ones * (to frob the interrupt clear registers). * This aids the debugging of interrupt routing problems, and is needed * for isa drivers that use isa_irq_pending (otherwise the registers * will never be cleared). */ #if defined(PSYCHO_DEBUG) || defined(PSYCHO_STRAY) for (map = PSR_PCIA0_INT_MAP, clr = PSR_PCIA0_INT_CLR, n = 0; map <= PSR_PCIB3_INT_MAP; map += 8, clr += 32, n++) { mr = PSYCHO_READ8(sc, map); #ifdef PSYCHO_DEBUG device_printf(dev, "intr map (pci) %d: %#lx\n", n, (u_long)mr); #endif PSYCHO_WRITE8(sc, map, mr & ~INTMAP_V); for (i = 0; i < 4; i++) PCICTL_WRITE8(sc, clr + i * 8, 0); PSYCHO_WRITE8(sc, map, mr | INTMAP_V); } for (map = PSR_SCSI_INT_MAP, clr = PSR_SCSI_INT_CLR, n = 0; map <= PSR_FFB1_INT_MAP; map += 8, clr += 8, n++) { mr = PSYCHO_READ8(sc, map); #ifdef PSYCHO_DEBUG device_printf(dev, "intr map (obio) %d: %#lx, clr: %#lx\n", n, (u_long)mr, (u_long)clr); #endif PSYCHO_WRITE8(sc, map, mr & ~INTMAP_V); PSYCHO_WRITE8(sc, clr, 0); #ifdef PSYCHO_STRAY /* * This can cause interrupt storms, and is therefore disabled * by default. * XXX: use intr_setup() to not confuse higher level code */ if (INTVEC(mr) != 0x7e6 && INTVEC(mr) != 0x7e7 && INTVEC(mr) != 0) { sclr = malloc(sizeof(*sclr), M_DEVBUF, M_WAITOK); sclr->psc_sc = sc; sclr->psc_clr = clr; intr_setup(PIL_LOW, intr_dequeue, INTVEC(mr), psycho_intr_stray, sclr); } #endif PSYCHO_WRITE8(sc, map, mr | INTMAP_V); } #endif /* * Get the bus range from the firmware; it is used solely for obtaining * the inital bus number, and cannot be trusted on all machines. */ n = OF_getprop(node, "bus-range", (void *)psycho_br, sizeof(psycho_br)); if (n == -1) panic("could not get psycho bus-range"); if (n != sizeof(psycho_br)) panic("broken psycho bus-range (%d)", n); sc->sc_busno = ofw_pci_alloc_busno(sc->sc_node); obd.obd_bus = psycho_br[0]; obd.obd_secbus = obd.obd_subbus = sc->sc_busno; obd.obd_slot = PCS_DEVICE; obd.obd_func = PCS_FUNC; obd.obd_init = psycho_binit; obd.obd_super = NULL; /* Initial setup. */ psycho_binit(dev, &obd); /* Update the bus number to what was just programmed. */ obd.obd_bus = obd.obd_secbus; /* * Initialize the interrupt registers of all devices hanging from * the host bridge directly or indirectly via PCI-PCI bridges. * The MI code (and the PCI spec) assume that this is done during * system initialization, however the firmware does not do this * at least on some models, and we probably shouldn't trust that * the firmware uses the same model as this driver if it does. * Additionally, set up the bus numbers and ranges. */ ofw_pci_init(dev, sc->sc_node, &obd); device_add_child(dev, "pci", device_get_unit(dev)); return (bus_generic_attach(dev)); } static void psycho_set_intr(struct psycho_softc *sc, int index, device_t dev, bus_addr_t map, int iflags, driver_intr_t handler) { int rid, vec; u_int64_t mr; mr = PSYCHO_READ8(sc, map); vec = INTVEC(mr); sc->sc_irq_res[index] = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, vec, vec, 1, RF_ACTIVE); if (sc->sc_irq_res[index] == NULL) panic("psycho_set_intr: failed to get interrupt"); bus_setup_intr(dev, sc->sc_irq_res[index], INTR_TYPE_MISC | iflags, handler, sc, &sc->sc_ihand[index]); PSYCHO_WRITE8(sc, map, mr | INTMAP_V); } static int psycho_find_intrmap(struct psycho_softc *sc, int ino, bus_addr_t *intrmapptr, bus_addr_t *intrclrptr, bus_addr_t *intrdiagptr) { bus_addr_t intrmap, intrclr; u_int64_t im; u_long diag; int found; found = 0; /* Hunt thru obio first */ diag = PSYCHO_READ8(sc, PSR_OBIO_INT_DIAG); for (intrmap = PSR_SCSI_INT_MAP, intrclr = PSR_SCSI_INT_CLR; intrmap <= PSR_FFB1_INT_MAP; intrmap += 8, intrclr += 8, diag >>= 2) { im = PSYCHO_READ8(sc, intrmap); if (INTINO(im) == ino) { diag &= 2; found = 1; break; } } if (!found) { diag = PSYCHO_READ8(sc, PSR_PCI_INT_DIAG); /* Now do PCI interrupts */ for (intrmap = PSR_PCIA0_INT_MAP, intrclr = PSR_PCIA0_INT_CLR; intrmap <= PSR_PCIB3_INT_MAP; intrmap += 8, intrclr += 32, diag >>= 8) { im = PSYCHO_READ8(sc, intrmap); if (((im ^ ino) & 0x3c) == 0) { intrclr += 8 * (ino & 3); diag = (diag >> ((ino & 3) * 2)) & 2; found = 1; break; } } } if (intrmapptr != NULL) *intrmapptr = intrmap; if (intrclrptr != NULL) *intrclrptr = intrclr; if (intrdiagptr != NULL) *intrdiagptr = diag; return (found); } /* grovel the OBP for various psycho properties */ static void psycho_get_ranges(phandle_t node, struct upa_ranges **rp, int *np) { *np = OF_getprop_alloc(node, "ranges", sizeof(**rp), (void **)rp); if (*np == -1) panic("could not get psycho ranges"); } /* * Interrupt handlers. */ static void psycho_ue(void *arg) { struct psycho_softc *sc = (struct psycho_softc *)arg; u_int64_t afar, afsr; afar = PSYCHO_READ8(sc, PSR_UE_AFA); afsr = PSYCHO_READ8(sc, PSR_UE_AFS); /* * On the UltraSPARC-IIi/IIe, IOMMU misses/protection faults cause * the AFAR to be set to the physical address of the TTE entry that * was invalid/write protected. Call into the iommu code to have * them decoded to virtual IO addresses. */ if ((afsr & UEAFSR_P_DTE) != 0) iommu_decode_fault(sc->sc_is, afar); /* It's uncorrectable. Dump the regs and panic. */ panic("%s: uncorrectable DMA error AFAR %#lx AFSR %#lx\n", device_get_name(sc->sc_dev), (u_long)afar, (u_long)afsr); } static void psycho_ce(void *arg) { struct psycho_softc *sc = (struct psycho_softc *)arg; u_int64_t afar, afsr; PSYCHO_WRITE8(sc, PSR_CE_INT_CLR, 0); afar = PSYCHO_READ8(sc, PSR_CE_AFA); afsr = PSYCHO_READ8(sc, PSR_CE_AFS); /* It's correctable. Dump the regs and continue. */ printf("%s: correctable DMA error AFAR %#lx AFSR %#lx\n", device_get_name(sc->sc_dev), (u_long)afar, (u_long)afsr); } static void psycho_bus_a(void *arg) { struct psycho_softc *sc = (struct psycho_softc *)arg; u_int64_t afar, afsr; afar = PSYCHO_READ8(sc, PSR_PCICTL0 + PCR_AFA); afsr = PSYCHO_READ8(sc, PSR_PCICTL0 + PCR_AFS); /* It's uncorrectable. Dump the regs and panic. */ panic("%s: PCI bus A error AFAR %#lx AFSR %#lx\n", device_get_name(sc->sc_dev), (u_long)afar, (u_long)afsr); } static void psycho_bus_b(void *arg) { struct psycho_softc *sc = (struct psycho_softc *)arg; u_int64_t afar, afsr; afar = PSYCHO_READ8(sc, PSR_PCICTL1 + PCR_AFA); afsr = PSYCHO_READ8(sc, PSR_PCICTL1 + PCR_AFS); /* It's uncorrectable. Dump the regs and panic. */ panic("%s: PCI bus B error AFAR %#lx AFSR %#lx\n", device_get_name(sc->sc_dev), (u_long)afar, (u_long)afsr); } static void psycho_powerfail(void *arg) { /* We lost power. Try to shut down NOW. */ #ifdef DEBUGGER_ON_POWERFAIL struct psycho_softc *sc = (struct psycho_softc *)arg; Debugger("powerfail"); PSYCHO_WRITE8(sc, PSR_POWER_INT_CLR, 0); #else printf("Power Failure Detected: Shutting down NOW.\n"); shutdown_nice(0); #endif } #ifdef PSYCHO_MAP_WAKEUP static void psycho_wakeup(void *arg) { struct psycho_softc *sc = (struct psycho_softc *)arg; PSYCHO_WRITE8(sc, PSR_PWRMGT_INT_CLR, 0); /* Gee, we don't really have a framework to deal with this properly. */ printf("%s: power management wakeup\n", device_get_name(sc->sc_dev)); } #endif /* PSYCHO_MAP_WAKEUP */ /* initialise the IOMMU... */ void psycho_iommu_init(struct psycho_softc *sc, int tsbsize) { char *name; struct iommu_state *is = sc->sc_is; u_int32_t iobase = -1; int *vdma = NULL; int nitem; /* punch in our copies */ is->is_bustag = sc->sc_bustag; is->is_bushandle = sc->sc_bushandle; is->is_iommu = PSR_IOMMU; is->is_dtag = PSR_IOMMU_TLB_TAG_DIAG; is->is_ddram = PSR_IOMMU_TLB_DATA_DIAG; is->is_dqueue = PSR_IOMMU_QUEUE_DIAG; is->is_dva = PSR_IOMMU_SVADIAG; is->is_dtcmp = PSR_IOMMU_TLB_CMP_DIAG; /* * Separate the men from the boys. Get the `virtual-dma' * property for sabre and use that to make sure the damn * iommu works. * * We could query the `#virtual-dma-size-cells' and * `#virtual-dma-addr-cells' and DTRT, but I'm lazy. */ nitem = OF_getprop_alloc(sc->sc_node, "virtual-dma", sizeof(vdma), (void **)&vdma); if (nitem > 0) { iobase = vdma[0]; tsbsize = ffs(vdma[1]); if (tsbsize < 25 || tsbsize > 31 || (vdma[1] & ~(1 << (tsbsize - 1))) != 0) { printf("bogus tsb size %x, using 7\n", vdma[1]); tsbsize = 31; } tsbsize -= 24; free(vdma, M_OFWPROP); } /* give us a nice name.. */ name = (char *)malloc(32, M_DEVBUF, M_NOWAIT); if (name == 0) panic("couldn't malloc iommu name"); snprintf(name, 32, "%s dvma", device_get_name(sc->sc_dev)); iommu_init(name, is, tsbsize, iobase, 0); } static void psycho_binit(device_t busdev, struct ofw_pci_bdesc *obd) { #ifdef PSYCHO_DEBUG printf("psycho at %u/%u/%u: setting bus #s to %u/%u/%u\n", obd->obd_bus, obd->obd_slot, obd->obd_func, obd->obd_bus, obd->obd_secbus, obd->obd_subbus); #endif /* PSYCHO_DEBUG */ /* * NOTE: this must be kept in this order, since the last write will * change the config space address of the psycho. */ PCIB_WRITE_CONFIG(busdev, obd->obd_bus, obd->obd_slot, obd->obd_func, PCSR_SUBBUS, obd->obd_subbus, 1); PCIB_WRITE_CONFIG(busdev, obd->obd_bus, obd->obd_slot, obd->obd_func, PCSR_SECBUS, obd->obd_secbus, 1); } static int psycho_maxslots(device_t dev) { /* * XXX: is this correct? At any rate, a number that is too high * shouldn't do any harm, if only because of the way things are * handled in psycho_read_config. */ return (31); } /* * Keep a table of quirky PCI devices that need fixups before the MI PCI code * creates the resource lists. This needs to be moved around once other bus * drivers are added. Moving it to the MI code should maybe be reconsidered * if one of these devices appear in non-sparc64 boxen. It's likely that not * all BIOSes/firmwares can deal with them. */ struct psycho_dquirk { u_int32_t dq_devid; int dq_quirk; }; /* Quirk types. May be or'ed together. */ #define DQT_BAD_INTPIN 1 /* Intpin reg 0, but intpin used */ static struct psycho_dquirk dquirks[] = { { 0x1001108e, DQT_BAD_INTPIN }, /* Sun HME (PCIO func. 1) */ { 0x1101108e, DQT_BAD_INTPIN }, /* Sun GEM (PCIO2 func. 1) */ { 0x1102108e, DQT_BAD_INTPIN }, /* Sun FireWire ctl. (PCIO2 func. 2) */ { 0x1103108e, DQT_BAD_INTPIN }, /* Sun USB ctl. (PCIO2 func. 3) */ }; #define NDQUIRKS (sizeof(dquirks) / sizeof(dquirks[0])) static u_int32_t psycho_read_config(device_t dev, u_int bus, u_int slot, u_int func, u_int reg, int width) { struct psycho_softc *sc; bus_space_handle_t bh; u_long offset = 0; u_int32_t r, devid; int i; /* * The psycho bridge does not tolerate accesses to unconfigured PCI * devices' or function's config space, so look up the device in the * firmware device tree first, and if it is not present, return a value * that will make the detection code think that there is no device here. * This is ugly... */ if (reg == 0 && ofw_pci_find_node(bus, slot, func) == 0) return (0xffffffff); sc = (struct psycho_softc *)device_get_softc(dev); offset = PSYCHO_CONF_OFF(bus, slot, func, reg); bh = sc->sc_bh[PCI_CS_CONFIG]; switch (width) { case 1: r = bus_space_read_1(sc->sc_cfgt, bh, offset); break; case 2: r = bus_space_read_2(sc->sc_cfgt, bh, offset); break; case 4: r = bus_space_read_4(sc->sc_cfgt, bh, offset); break; default: panic("psycho_read_config: bad width"); } if (reg == PCIR_INTPIN && r == 0) { /* Check for DQT_BAD_INTPIN quirk. */ devid = psycho_read_config(dev, bus, slot, func, PCIR_DEVVENDOR, 4); for (i = 0; i < NDQUIRKS; i++) { if (dquirks[i].dq_devid == devid) { /* * Need to set the intpin to a value != 0 so * that the MI code will think that this device * has an interrupt. * Just use 1 (intpin a) for now. This is, of * course, bogus, but since interrupts are * routed in advance, this does not really * matter. */ if ((dquirks[i].dq_quirk & DQT_BAD_INTPIN) != 0) r = 1; break; } } } return (r); } static void psycho_write_config(device_t dev, u_int bus, u_int slot, u_int func, u_int reg, u_int32_t val, int width) { struct psycho_softc *sc; bus_space_handle_t bh; u_long offset = 0; sc = (struct psycho_softc *)device_get_softc(dev); offset = PSYCHO_CONF_OFF(bus, slot, func, reg); bh = sc->sc_bh[PCI_CS_CONFIG]; switch (width) { case 1: bus_space_write_1(sc->sc_cfgt, bh, offset, val); break; case 2: bus_space_write_2(sc->sc_cfgt, bh, offset, val); break; case 4: bus_space_write_4(sc->sc_cfgt, bh, offset, val); break; default: panic("psycho_write_config: bad width"); } } static int psycho_route_interrupt(device_t bus, device_t dev, int pin) { /* * XXX: ugly loathsome hack: * We can't use ofw_pci_route_intr() here; the device passed may be * the one of a bridge, so the original device can't be recovered. * * We need to use the firmware to route interrupts, however it has * no interface which could be used to interpret intpins; instead, * all assignments are done by device. * * The MI pci code will try to reroute interrupts of 0, although they * are correct; all other interrupts are preinitialized, so if we * get here, the intline is either 0 (so return 0), or we hit a * device which was not preinitialized (e.g. hotplugged stuff), in * which case we are lost. */ return (0); } static int psycho_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) { struct psycho_softc *sc; sc = (struct psycho_softc *)device_get_softc(dev); switch (which) { case PCIB_IVAR_BUS: *result = sc->sc_busno; return (0); } return (ENOENT); } /* Write to the correct clr register, and call the actual handler. */ static void psycho_intr_stub(void *arg) { struct psycho_clr *pc; pc = (struct psycho_clr *)arg; pc->pci_handler(pc->pci_arg); PSYCHO_WRITE8(pc->pci_sc, pc->pci_clr, 0); } #ifdef PSYCHO_STRAY /* * Write to the correct clr register and return. arg is the address of the clear * register to be used. * XXX: print a message? */ static void psycho_intr_stray(void *arg) { struct psycho_strayclr *sclr = arg; PSYCHO_WRITE8(sclr->psc_sc, sclr->psc_clr, 0); } #endif static int psycho_setup_intr(device_t dev, device_t child, struct resource *ires, int flags, driver_intr_t *intr, void *arg, void **cookiep) { struct psycho_softc *sc; struct psycho_clr *pc; bus_addr_t intrmapptr, intrclrptr; long vec = rman_get_start(ires); u_int64_t mr; int ino, error; sc = (struct psycho_softc *)device_get_softc(dev); pc = (struct psycho_clr *)malloc(sizeof(*pc), M_DEVBUF, M_NOWAIT); if (pc == NULL) return (NULL); /* * Hunt through all the interrupt mapping regs to look for our * interrupt vector. * * XXX We only compare INOs rather than IGNs since the firmware may * not provide the IGN and the IGN is constant for all device on that * PCI controller. This could cause problems for the FFB/external * interrupt which has a full vector that can be set arbitrarily. */ ino = INTINO(vec); if (!psycho_find_intrmap(sc, ino, &intrmapptr, &intrclrptr, NULL)) { printf("Cannot find interrupt vector %lx\n", vec); free(pc, M_DEVBUF); return (NULL); } #ifdef PSYCHO_DEBUG device_printf(dev, "psycho_setup_intr: INO %d, map %#lx, clr %#lx\n", ino, (u_long)intrmapptr, (u_long)intrclrptr); #endif pc->pci_sc = sc; pc->pci_arg = arg; pc->pci_handler = intr; pc->pci_clr = intrclrptr; /* Disable the interrupt while we fiddle with it */ mr = PSYCHO_READ8(sc, intrmapptr); PSYCHO_WRITE8(sc, intrmapptr, mr & ~INTMAP_V); error = BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags, psycho_intr_stub, pc, cookiep); if (error != 0) { free(pc, M_DEVBUF); return (error); } pc->pci_cookie = *cookiep; *cookiep = pc; /* * Clear the interrupt, it might have been triggered before it was * set up. */ PSYCHO_WRITE8(sc, intrclrptr, 0); /* * Enable the interrupt now we have the handler installed. * Read the current value as we can't change it besides the * valid bit so so make sure only this bit is changed. */ PSYCHO_WRITE8(sc, intrmapptr, mr | INTMAP_V); return (error); } static int psycho_teardown_intr(device_t dev, device_t child, struct resource *vec, void *cookie) { struct psycho_clr *pc; int error; pc = (struct psycho_clr *)cookie; error = BUS_TEARDOWN_INTR(device_get_parent(dev), child, vec, pc->pci_cookie); /* * Don't disable the interrupt for now, so that stray interupts get * detected... */ if (error != 0) free(pc, M_DEVBUF); return (error); } static struct resource * psycho_alloc_resource(device_t bus, device_t child, int type, int *rid, u_long start, u_long end, u_long count, u_int flags) { struct psycho_softc *sc; struct resource *rv; struct rman *rm; bus_space_tag_t bt; bus_space_handle_t bh; int needactivate = flags & RF_ACTIVE; flags &= ~RF_ACTIVE; sc = (struct psycho_softc *)device_get_softc(bus); if (type == SYS_RES_IRQ) { /* * XXX: Don't accept blank ranges for now, only single * interrupts. The other case should not happen with the MI pci * code... * XXX: This may return a resource that is out of the range * that was specified. Is this correct...? */ if (start != end) panic("psycho_alloc_resource: XXX: interrupt range"); start = end |= sc->sc_ign; return (bus_alloc_resource(bus, type, rid, start, end, count, flags)); } switch (type) { case SYS_RES_MEMORY: rm = &sc->sc_mem_rman; bt = sc->sc_memt; bh = sc->sc_bh[PCI_CS_MEM32]; break; case SYS_RES_IOPORT: rm = &sc->sc_io_rman; bt = sc->sc_iot; /* XXX: probably should use ranges property here. */ bh = sc->sc_bh[PCI_CS_IO]; break; default: return (NULL); } rv = rman_reserve_resource(rm, start, end, count, flags, child); if (rv == NULL) return (NULL); bh += rman_get_start(rv); rman_set_bustag(rv, bt); rman_set_bushandle(rv, bh); if (needactivate) { if (bus_activate_resource(child, type, *rid, rv)) { rman_release_resource(rv); return (NULL); } } return (rv); } static int psycho_activate_resource(device_t bus, device_t child, int type, int rid, struct resource *r) { void *p; int error; if (type == SYS_RES_IRQ) return (bus_activate_resource(bus, 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. */ error = sparc64_bus_mem_map(rman_get_bustag(r), rman_get_bushandle(r), rman_get_size(r), 0, NULL, &p); if (error != 0) return (error); rman_set_virtual(r, p); } return (rman_activate_resource(r)); } static int psycho_deactivate_resource(device_t bus, device_t child, int type, int rid, struct resource *r) { if (type == SYS_RES_IRQ) return (bus_deactivate_resource(bus, type, rid, r)); if (type == SYS_RES_MEMORY) { sparc64_bus_mem_unmap(rman_get_virtual(r), rman_get_size(r)); rman_set_virtual(r, NULL); } return (rman_deactivate_resource(r)); } static int psycho_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r) { int error; if (type == SYS_RES_IRQ) return (bus_release_resource(bus, type, rid, r)); if (rman_get_flags(r) & RF_ACTIVE) { error = bus_deactivate_resource(child, type, rid, r); if (error) return error; } return (rman_release_resource(r)); } static int psycho_intr_pending(device_t dev, int intr) { struct psycho_softc *sc; u_long diag; sc = (struct psycho_softc *)device_get_softc(dev); if (!psycho_find_intrmap(sc, intr, NULL, NULL, &diag)) { printf("psycho_intr_pending: mapping not found for %d\n", intr); return (0); } return (diag != 0); } static bus_space_handle_t psycho_get_bus_handle(device_t dev, enum sbbt_id id, bus_space_handle_t childhdl, bus_space_tag_t *tag) { struct psycho_softc *sc; sc = (struct psycho_softc *)device_get_softc(dev); switch(id) { case SBBT_IO: *tag = sc->sc_iot; return (sc->sc_bh[PCI_CS_IO] + childhdl); case SBBT_MEM: *tag = sc->sc_memt; return (sc->sc_bh[PCI_CS_MEM32] + childhdl); default: panic("psycho_get_bus_handle: illegal space\n"); } } /* * below here is bus space and bus dma support */ static bus_space_tag_t psycho_alloc_bus_tag(struct psycho_softc *sc, int type) { bus_space_tag_t bt; bt = (bus_space_tag_t)malloc(sizeof(struct bus_space_tag), M_DEVBUF, M_NOWAIT | M_ZERO); if (bt == NULL) panic("psycho_alloc_bus_tag: out of memory"); bzero(bt, sizeof *bt); bt->cookie = sc; bt->parent = sc->sc_bustag; bt->type = type; return (bt); } /* * hooks into the iommu dvma calls. */ static int psycho_dmamem_alloc(bus_dma_tag_t pdmat, bus_dma_tag_t ddmat, void **vaddr, int flags, bus_dmamap_t *mapp) { struct psycho_softc *sc; sc = (struct psycho_softc *)pdmat->cookie; return (iommu_dvmamem_alloc(pdmat, ddmat, sc->sc_is, vaddr, flags, mapp)); } static void psycho_dmamem_free(bus_dma_tag_t pdmat, bus_dma_tag_t ddmat, void *vaddr, bus_dmamap_t map) { struct psycho_softc *sc; sc = (struct psycho_softc *)pdmat->cookie; iommu_dvmamem_free(pdmat, ddmat, sc->sc_is, vaddr, map); } static int psycho_dmamap_create(bus_dma_tag_t pdmat, bus_dma_tag_t ddmat, int flags, bus_dmamap_t *mapp) { struct psycho_softc *sc; sc = (struct psycho_softc *)pdmat->cookie; return (iommu_dvmamap_create(pdmat, ddmat, sc->sc_is, flags, mapp)); } static int psycho_dmamap_destroy(bus_dma_tag_t pdmat, bus_dma_tag_t ddmat, bus_dmamap_t map) { struct psycho_softc *sc; sc = (struct psycho_softc *)pdmat->cookie; return (iommu_dvmamap_destroy(pdmat, ddmat, sc->sc_is, map)); } static int psycho_dmamap_load(bus_dma_tag_t pdmat, bus_dma_tag_t ddmat, bus_dmamap_t map, void *buf, bus_size_t buflen, bus_dmamap_callback_t *callback, void *callback_arg, int flags) { struct psycho_softc *sc; sc = (struct psycho_softc *)pdmat->cookie; return (iommu_dvmamap_load(pdmat, ddmat, sc->sc_is, map, buf, buflen, callback, callback_arg, flags)); } static void psycho_dmamap_unload(bus_dma_tag_t pdmat, bus_dma_tag_t ddmat, bus_dmamap_t map) { struct psycho_softc *sc; sc = (struct psycho_softc *)pdmat->cookie; iommu_dvmamap_unload(pdmat, ddmat, sc->sc_is, map); } static void psycho_dmamap_sync(bus_dma_tag_t pdmat, bus_dma_tag_t ddmat, bus_dmamap_t map, bus_dmasync_op_t op) { struct psycho_softc *sc; sc = (struct psycho_softc *)pdmat->cookie; iommu_dvmamap_sync(pdmat, ddmat, sc->sc_is, map, op); }