/* * Copyright (c) 1999, 2000 Matthew R. Green * Copyright (c) 2001 - 2003 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_ofw_pci.h" #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 #include #include #include #include #include #include "pcib_if.h" 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 *); 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); /* * Methods. */ static device_probe_t psycho_probe; static device_attach_t psycho_attach; static bus_read_ivar_t psycho_read_ivar; static bus_setup_intr_t psycho_setup_intr; static bus_teardown_intr_t psycho_teardown_intr; static bus_alloc_resource_t psycho_alloc_resource; static bus_activate_resource_t psycho_activate_resource; static bus_deactivate_resource_t psycho_deactivate_resource; static bus_release_resource_t psycho_release_resource; static pcib_maxslots_t psycho_maxslots; static pcib_read_config_t psycho_read_config; static pcib_write_config_t psycho_write_config; static pcib_route_interrupt_t psycho_route_interrupt; static ofw_pci_intr_pending_t psycho_intr_pending; static ofw_pci_get_bus_handle_t psycho_get_bus_handle; static ofw_bus_get_node_t psycho_get_node; static ofw_pci_adjust_busrange_t psycho_adjust_busrange; 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), /* ofw_bus interface */ DEVMETHOD(ofw_bus_get_node, psycho_get_node), /* ofw_pci interface */ DEVMETHOD(ofw_pci_intr_pending, psycho_intr_pending), DEVMETHOD(ofw_pci_get_bus_handle, psycho_get_bus_handle), DEVMETHOD(ofw_pci_adjust_busrange, psycho_adjust_busrange), { 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); SLIST_HEAD(, psycho_softc) psycho_softcs = SLIST_HEAD_INITIALIZER(psycho_softcs); 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+" are dual UPA to PCI bridges. They sit on the UPA bus * and manage 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. */ #ifdef DEBUGGER_ON_POWERFAIL #define PSYCHO_PWRFAIL_INT_FLAGS INTR_FAST #else #define PSYCHO_PWRFAIL_INT_FLAGS 0 #endif #define OFW_PCI_TYPE "pci" struct psycho_desc { char *pd_string; int pd_mode; char *pd_name; }; static struct psycho_desc psycho_compats[] = { { "pci108e,8000", PSYCHO_MODE_PSYCHO, "Psycho compatible" }, { "pci108e,a000", PSYCHO_MODE_SABRE, "Sabre (US-IIi) compatible" }, { "pci108e,a001", PSYCHO_MODE_SABRE, "Sabre (US-IIe) compatible" }, { NULL, 0, NULL } }; static struct psycho_desc psycho_models[] = { { "SUNW,psycho", PSYCHO_MODE_PSYCHO, "Psycho" }, { "SUNW,sabre", PSYCHO_MODE_SABRE, "Sabre" }, { NULL, 0, NULL } }; static struct psycho_desc * psycho_find_desc(struct psycho_desc *table, char *string) { struct psycho_desc *desc; for (desc = table; desc->pd_string != NULL; desc++) { if (strcmp(desc->pd_string, string) == 0) return (desc); } return (NULL); } static struct psycho_desc * psycho_get_desc(phandle_t node, char *model) { struct psycho_desc *rv; char compat[32]; rv = NULL; if (model != NULL) rv = psycho_find_desc(psycho_models, model); if (rv == NULL && OF_getprop(node, "compatible", compat, sizeof(compat)) != -1) rv = psycho_find_desc(psycho_compats, compat); return (rv); } static int psycho_probe(device_t dev) { phandle_t node; char *dtype; node = nexus_get_node(dev); dtype = nexus_get_device_type(dev); if (nexus_get_reg(dev) != NULL && dtype != NULL && strcmp(dtype, OFW_PCI_TYPE) == 0 && psycho_get_desc(node, nexus_get_model(dev)) != NULL) { device_set_desc(dev, "U2P UPA-PCI bridge"); return (0); } return (ENXIO); } 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 psycho_desc *desc; phandle_t node; u_int64_t csr; u_long mlen; int psycho_br[2]; int n, i, nreg, rid; #ifdef PSYCHO_DEBUG bus_addr_t map, clr; u_int64_t mr; #endif node = nexus_get_node(dev); sc = device_get_softc(dev); desc = psycho_get_desc(node, nexus_get_model(dev)); sc->sc_node = node; sc->sc_dev = dev; sc->sc_dmatag = nexus_get_dmatag(dev); sc->sc_mode = desc->pd_mode; /* * 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 */ reg = nexus_get_reg(dev); nreg = nexus_get_nreg(dev); if (sc->sc_mode == PSYCHO_MODE_PSYCHO) { if (nreg <= 2) panic("psycho_attach: %d not enough registers", nreg); sc->sc_basepaddr = (vm_paddr_t)UPA_REG_PHYS(®[2]); mlen = UPA_REG_SIZE(®[2]); sc->sc_pcictl = UPA_REG_PHYS(®[0]) - sc->sc_basepaddr; switch (sc->sc_pcictl) { case PSR_PCICTL0: sc->sc_half = 0; break; case PSR_PCICTL1: sc->sc_half = 1; break; default: panic("psycho_attach: bogus pci control register " "location"); } } else { if (nreg <= 0) panic("psycho_attach: %d not enough registers", nreg); sc->sc_basepaddr = (vm_paddr_t)UPA_REG_PHYS(®[0]); mlen = UPA_REG_SIZE(reg); sc->sc_pcictl = PSR_PCICTL0; sc->sc_half = 0; } /* * 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. */ SLIST_FOREACH(asc, &psycho_softcs, sc_link) { if (asc->sc_basepaddr == sc->sc_basepaddr) { /* 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; } 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, bus %c\n", desc->pd_name, (int)PSYCHO_GCSR_IMPL(csr), (int)PSYCHO_GCSR_VERS(csr), sc->sc_ign, 'A' + sc->sc_half); /* 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); if (sc->sc_mode == PSYCHO_MODE_SABRE) { /* Use the PROM preset for now. */ csr = PCICTL_READ8(sc, PCR_TAS); if (csr == 0) panic("psycho_attach: sabre TAS not initialized."); sc->sc_dvmabase = (ffs(csr) - 1) << PCITAS_ADDR_SHIFT; } else sc->sc_dvmabase = -1; /* 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"); sc->sc_nrange = OF_getprop_alloc(sc->sc_node, "ranges", sizeof(*sc->sc_range), (void **)&sc->sc_range); if (sc->sc_nrange == -1) panic("could not get psycho ranges"); /* * 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); } /* Register the softc, this is needed for paired psychos. */ SLIST_INSERT_HEAD(&psycho_softcs, sc, sc_link); /* * If we're a sabre or the first of a pair of psycho's to arrive here, * start up the IOMMU. */ 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, PSYCHO_PWRFAIL_INT_FLAGS, 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 and 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, 3); } 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); } /* 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, NULL, NULL, &sc->sc_dmat) != 0) panic("psycho_attach: bus_dma_tag_create failed"); /* Customize the tag. */ sc->sc_dmat->dt_cookie = sc->sc_is; sc->sc_dmat->dt_mt = &iommu_dma_methods; /* XXX: register as root dma tag (kludge). */ sparc64_root_dma_tag = sc->sc_dmat; #ifdef PSYCHO_DEBUG /* * Enable all interrupts and clear all interrupt states. * This aids the debugging of interrupt routing problems. */ 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); device_printf(dev, "intr map (pci) %d: %#lx\n", n, (u_long)mr); PSYCHO_WRITE8(sc, map, mr & ~INTMAP_V); for (i = 0; i < 4; i++) PCICTL_WRITE8(sc, clr + i * 8, 0); PSYCHO_WRITE8(sc, map, INTMAP_ENABLE(mr, PCPU_GET(mid))); } for (map = PSR_SCSI_INT_MAP, clr = PSR_SCSI_INT_CLR, n = 0; map <= PSR_SERIAL_INT_MAP; map += 8, clr += 8, n++) { mr = PSYCHO_READ8(sc, map); device_printf(dev, "intr map (obio) %d: %#lx, clr: %#lx\n", n, (u_long)mr, (u_long)clr); PSYCHO_WRITE8(sc, map, mr & ~INTMAP_V); PSYCHO_WRITE8(sc, clr, 0); PSYCHO_WRITE8(sc, map, INTMAP_ENABLE(mr, PCPU_GET(mid))); } #endif /* PSYCHO_DEBUG */ /* * 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_secbus = sc->sc_subbus = ofw_pci_alloc_busno(sc->sc_node); /* * Program the bus range registers. * NOTE: for the psycho, the second write changes the bus number the * psycho itself uses for it's configuration space, so these * writes must be kept in this order! * The sabre always uses bus 0, but there only can be one sabre per * machine. */ PCIB_WRITE_CONFIG(dev, psycho_br[0], PCS_DEVICE, PCS_FUNC, PCSR_SUBBUS, sc->sc_subbus, 1); PCIB_WRITE_CONFIG(dev, psycho_br[0], PCS_DEVICE, PCS_FUNC, PCSR_SECBUS, sc->sc_secbus, 1); ofw_bus_setup_iinfo(node, &sc->sc_iinfo, sizeof(ofw_pci_intr_t)); device_add_child(dev, "pci", sc->sc_secbus); 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, INTMAP_ENABLE(mr, PCPU_GET(mid))); } 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_SERIAL_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) { if (sc->sc_mode == PSYCHO_MODE_PSYCHO && (intrmap == PSR_PCIA2_INT_MAP || intrmap == PSR_PCIA3_INT_MAP)) continue; 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); } /* * 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); panic("%s: uncorrectable DMA error AFAR %#lx AFSR %#lx", 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; afar = PSYCHO_READ8(sc, PSR_CE_AFA); afsr = PSYCHO_READ8(sc, PSR_CE_AFS); device_printf(sc->sc_dev, "correctable DMA error AFAR %#lx " "AFSR %#lx\n", (u_long)afar, (u_long)afsr); /* Clear the error bits that we caught. */ PSYCHO_WRITE8(sc, PSR_CE_AFS, afsr & CEAFSR_ERRMASK); PSYCHO_WRITE8(sc, PSR_CE_INT_CLR, 0); } 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); panic("%s: PCI bus A error AFAR %#lx AFSR %#lx", 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); panic("%s: PCI bus B error AFAR %#lx AFSR %#lx", device_get_name(sc->sc_dev), (u_long)afar, (u_long)afsr); } static void psycho_powerfail(void *arg) { #ifdef DEBUGGER_ON_POWERFAIL struct psycho_softc *sc = (struct psycho_softc *)arg; kdb_enter("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. */ device_printf(sc->sc_dev, "power management wakeup\n"); } #endif /* PSYCHO_MAP_WAKEUP */ void psycho_iommu_init(struct psycho_softc *sc, int tsbsize) { char *name; struct iommu_state *is = sc->sc_is; /* 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; /* 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_nameunit(sc->sc_dev)); iommu_init(name, is, tsbsize, sc->sc_dvmabase, 0); } static int psycho_maxslots(device_t dev) { /* XXX: is this correct? */ return (PCI_SLOTMAX); } 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_int8_t byte; u_int16_t shrt; u_int32_t wrd; u_int32_t r; int i; 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: i = bus_space_peek_1(sc->sc_cfgt, bh, offset, &byte); r = byte; break; case 2: i = bus_space_peek_2(sc->sc_cfgt, bh, offset, &shrt); r = shrt; break; case 4: i = bus_space_peek_4(sc->sc_cfgt, bh, offset, &wrd); r = wrd; break; default: panic("psycho_read_config: bad width"); } if (i) { #ifdef PSYCHO_DEBUG printf("psycho read data error reading: %d.%d.%d: 0x%x\n", bus, slot, func, reg); #endif r = -1; } 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 bridge, device_t dev, int pin) { struct psycho_softc *sc = device_get_softc(bridge); struct ofw_pci_register reg; bus_addr_t intrmap; phandle_t node = ofw_bus_get_node(dev); ofw_pci_intr_t pintr, mintr; u_int8_t maskbuf[sizeof(reg) + sizeof(pintr)]; pintr = pin; if (ofw_bus_lookup_imap(node, &sc->sc_iinfo, ®, sizeof(reg), &pintr, sizeof(pintr), &mintr, sizeof(mintr), maskbuf)) return (mintr); /* * If this is outside of the range for an intpin, it's likely a full * INO, and no mapping is required at all; this happens on the u30, * where there's no interrupt map at the psycho node. Fortunately, * there seem to be no INOs in the intpin range on this boxen, so * this easy heuristics will do. */ if (pin > 4) return (pin); /* * Guess the INO; we always assume that this is a non-OBIO * device, and that pin is a "real" intpin number. Determine * the mapping register to be used by the slot number. * We only need to do this on e450s, it seems; here, the slot numbers * for bus A are one-based, while those for bus B seemingly have an * offset of 2 (hence the factor of 3 below). */ intrmap = PSR_PCIA0_INT_MAP + 8 * (pci_get_slot(dev) - 1 + 3 * sc->sc_half); mintr = INTINO(PSYCHO_READ8(sc, intrmap)) + pin - 1; device_printf(bridge, "guessing interrupt %d for device %d/%d pin %d\n", (int)mintr, pci_get_slot(dev), pci_get_function(dev), pin); return (mintr); } 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_secbus; 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); } 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 (0); /* * 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 devices 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)) { device_printf(dev, "Cannot find interrupt vector %lx\n", vec); free(pc, M_DEVBUF); return (0); } #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 and program the target module now we have the * handler installed. */ PSYCHO_WRITE8(sc, intrmapptr, INTMAP_ENABLE(mr, PCPU_GET(mid))); 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(device_get_parent(bus), child, 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; 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(device_get_parent(bus), child, 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, 0, &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(device_get_parent(bus), child, 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(device_get_parent(bus), child, 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, ofw_pci_intr_t 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)) { device_printf(dev, "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, int type, bus_space_handle_t childhdl, bus_space_tag_t *tag) { struct psycho_softc *sc; sc = (struct psycho_softc *)device_get_softc(dev); switch (type) { case SYS_RES_IOPORT: *tag = sc->sc_iot; return (sc->sc_bh[PCI_CS_IO] + childhdl); case SYS_RES_MEMORY: *tag = sc->sc_memt; return (sc->sc_bh[PCI_CS_MEM32] + childhdl); default: panic("psycho_get_bus_handle: illegal space\n"); } } static phandle_t psycho_get_node(device_t bus, device_t dev) { struct psycho_softc *sc = device_get_softc(bus); /* We only have one child, the PCI bus, which needs our own node. */ return (sc->sc_node); } static void psycho_adjust_busrange(device_t dev, u_int subbus) { struct psycho_softc *sc = device_get_softc(dev); /* If necessary, adjust the subordinate bus number register. */ if (subbus > sc->sc_subbus) { #ifdef PSYCHO_DEBUG device_printf(dev, "adjusting secondary bus number from %d to %d\n", sc->sc_subbus, subbus); #endif sc->sc_subbus = subbus; PCIB_WRITE_CONFIG(dev, sc->sc_secbus, PCS_DEVICE, PCS_FUNC, PCSR_SUBBUS, subbus, 1); } } 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->bst_cookie = sc; bt->bst_parent = sc->sc_bustag; bt->bst_type = type; return (bt); }