/* $NetBSD: vpci.c,v 1.7 2016/05/10 19:23:59 palle Exp $ */ /* * Copyright (c) 2015 Palle Lyckegaard * All rights reserved. * * Driver for virtual PCIe host bridge on sun4v systems. * * Based on NetBSD pyro and OpenBSD vpci drivers. * * 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. * * 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: vpci.c,v 1.7 2016/05/10 19:23:59 palle Exp $"); #include #include #include #include #include #define _SPARC_BUS_DMA_PRIVATE #include #include #ifdef DDB #include #endif #include #include #include #include #include #include #ifdef DEBUG #define VDB_PROM 0x01 #define VDB_BUSMAP 0x02 #define VDB_INTR 0x04 #define VDB_CONF_READ 0x08 #define VDB_CONF_WRITE 0x10 #define VDB_CONF VDB_CONF_READ|VDB_CONF_WRITE int vpci_debug = 0x00; #define DPRINTF(l, s) do { if (vpci_debug & l) printf s; } while (0) #else #define DPRINTF(l, s) #endif #if 0 FIXME #define FIRE_RESET_GEN 0x7010 #define FIRE_RESET_GEN_XIR 0x0000000000000002L #define FIRE_INTRMAP_INT_CNTRL_NUM_MASK 0x000003c0 #define FIRE_INTRMAP_INT_CNTRL_NUM0 0x00000040 #define FIRE_INTRMAP_INT_CNTRL_NUM1 0x00000080 #define FIRE_INTRMAP_INT_CNTRL_NUM2 0x00000100 #define FIRE_INTRMAP_INT_CNTRL_NUM3 0x00000200 #define FIRE_INTRMAP_T_JPID_SHIFT 26 #define FIRE_INTRMAP_T_JPID_MASK 0x7c000000 #define OBERON_INTRMAP_T_DESTID_SHIFT 21 #define OBERON_INTRMAP_T_DESTID_MASK 0x7fe00000 #endif extern struct sparc_pci_chipset _sparc_pci_chipset; int vpci_match(device_t, cfdata_t, void *); void vpci_attach(device_t, device_t, void *); int vpci_print(void *, const char *); CFATTACH_DECL_NEW(vpci, sizeof(struct vpci_softc), vpci_match, vpci_attach, NULL, NULL); void vpci_init(struct vpci_softc */*FIXME, int*/, struct mainbus_attach_args *); void vpci_init_iommu(struct vpci_softc *, struct vpci_pbm *); pci_chipset_tag_t vpci_alloc_chipset(struct vpci_pbm *, int, pci_chipset_tag_t); bus_space_tag_t vpci_alloc_mem_tag(struct vpci_pbm *); bus_space_tag_t vpci_alloc_io_tag(struct vpci_pbm *); bus_space_tag_t vpci_alloc_config_tag(struct vpci_pbm *); bus_space_tag_t vpci_alloc_bus_tag(struct vpci_pbm *, const char *, int); bus_dma_tag_t vpci_alloc_dma_tag(struct vpci_pbm *); #if 0 int vpci_conf_size(pci_chipset_tag_t, pcitag_t); #endif pcireg_t vpci_conf_read(pci_chipset_tag_t, pcitag_t, int); void vpci_conf_write(pci_chipset_tag_t, pcitag_t, int, pcireg_t); static void * vpci_pci_intr_establish(pci_chipset_tag_t pc, pci_intr_handle_t ih, int level, int (*func)(void *), void *arg); void vpci_intr_ack(struct intrhand *); int vpci_intr_map(const struct pci_attach_args *, pci_intr_handle_t *); int vpci_bus_map(bus_space_tag_t, bus_addr_t, bus_size_t, int, vaddr_t, bus_space_handle_t *); paddr_t vpci_bus_mmap(bus_space_tag_t, bus_addr_t, off_t, int, int); void *vpci_intr_establish(bus_space_tag_t, int, int, int (*)(void *), void *, void (*)(void)); int vpci_dmamap_create(bus_dma_tag_t, bus_size_t, int, bus_size_t, bus_size_t, int, bus_dmamap_t *); int vpci_match(device_t parent, cfdata_t match, void *aux) { struct mainbus_attach_args *ma = aux; char compat[32]; if (strcmp(ma->ma_name, "pci") != 0) return (0); if (OF_getprop(ma->ma_node, "compatible", compat, sizeof(compat)) == -1) return (0); if (strcmp(compat, "SUNW,sun4v-pci") == 0) return (1); return (0); } void vpci_attach(device_t parent, device_t self, void *aux) { struct vpci_softc *sc = device_private(self); struct mainbus_attach_args *ma = aux; #if 0 FIXME char *str; int busa; #endif sc->sc_dev = self; sc->sc_node = ma->ma_node; sc->sc_dmat = ma->ma_dmatag; sc->sc_bustag = ma->ma_bustag; sc->sc_csr = ma->ma_reg[0].ur_paddr; #if 0 FIXME sc->sc_xbc = ma->ma_reg[1].ur_paddr; sc->sc_ign = INTIGN(ma->ma_upaid << INTMAP_IGN_SHIFT); if ((ma->ma_reg[0].ur_paddr & 0x00700000) == 0x00600000) busa = 1; else busa = 0; #endif #if 0 FIXME if (bus_space_map(sc->sc_bustag, sc->sc_csr, ma->ma_reg[0].ur_len, BUS_SPACE_MAP_LINEAR, &sc->sc_csrh)) { printf(": failed to map csr registers\n"); return; } #endif #if 0 FIXME if (bus_space_map(sc->sc_bustag, sc->sc_xbc, ma->ma_reg[1].ur_len, 0, &sc->sc_xbch)) { printf(": failed to map xbc registers\n"); return; } str = prom_getpropstring(ma->ma_node, "compatible"); if (strcmp(str, "pciex108e,80f8") == 0) sc->sc_oberon = 1; #endif vpci_init(sc/*FIXME, busa*/, ma); } void vpci_init(struct vpci_softc *sc/*FIXME, int busa*/, struct mainbus_attach_args *ma) { struct vpci_pbm *pbm; struct pcibus_attach_args pba; int *busranges = NULL, nranges; pbm = malloc(sizeof(*pbm), M_DEVBUF, M_NOWAIT | M_ZERO); if (pbm == NULL) panic("vpci: can't alloc vpci pbm"); pbm->vp_sc = sc; pbm->vp_devhandle = (ma->ma_reg[0].ur_paddr >> 32) & 0x0fffffff; #if 0 FiXME pbm->vp_bus_a = busa; #endif if (prom_getprop(sc->sc_node, "ranges", sizeof(struct vpci_range), &pbm->vp_nrange, (void **)&pbm->vp_range)) panic("vpci: can't get ranges"); for (int range = 0; range < pbm->vp_nrange; range++) DPRINTF(VDB_PROM, ("\nvpci_attach: range %d cspace %08x " "child_hi %08x child_lo %08x phys_hi %08x phys_lo %08x " "size_hi %08x size_lo %08x", range, pbm->vp_range[range].cspace, pbm->vp_range[range].child_hi, pbm->vp_range[range].child_lo, pbm->vp_range[range].phys_hi, pbm->vp_range[range].phys_lo, pbm->vp_range[range].size_hi, pbm->vp_range[range].size_lo)); if (prom_getprop(sc->sc_node, "bus-range", sizeof(int), &nranges, (void **)&busranges)) panic("vpci: can't get bus-range"); for (int range = 0; range < nranges; range++) DPRINTF(VDB_PROM, ("\nvpci_attach: bus-range %d %08x", range, busranges[range])); aprint_normal(": bus %d to %d", busranges[0], busranges[1]); vpci_init_iommu(sc, pbm); pbm->vp_memt = vpci_alloc_mem_tag(pbm); pbm->vp_iot = vpci_alloc_io_tag(pbm); pbm->vp_cfgt = vpci_alloc_config_tag(pbm); pbm->vp_dmat = vpci_alloc_dma_tag(pbm); pbm->vp_flags = (pbm->vp_memt ? PCI_FLAGS_MEM_OKAY : 0) | (pbm->vp_iot ? PCI_FLAGS_IO_OKAY : 0); #if 0 FIXME if (bus_space_map(pbm->vp_cfgt, 0, 0x10000000, 0, &pbm->vp_cfgh)) panic("vpci: can't map config space"); #endif pbm->vp_pc = vpci_alloc_chipset(pbm, sc->sc_node, &_sparc_pci_chipset); pbm->vp_pc->spc_busmax = busranges[1]; pbm->vp_pc->spc_busnode = malloc(sizeof(*pbm->vp_pc->spc_busnode), M_DEVBUF, M_NOWAIT | M_ZERO); if (pbm->vp_pc->spc_busnode == NULL) panic("vpci: malloc busnode"); #if 0 pbm->vp_pc->bustag = pbm->vp_cfgt; pbm->vp_pc->bushandle = pbm->vp_cfgh; #endif bzero(&pba, sizeof(pba)); pba.pba_bus = busranges[0]; pba.pba_pc = pbm->vp_pc; pba.pba_flags = pbm->vp_flags; pba.pba_dmat = pbm->vp_dmat; pba.pba_dmat64 = NULL; /* XXX */ pba.pba_memt = pbm->vp_memt; pba.pba_iot = pbm->vp_iot; free(busranges, M_DEVBUF); config_found(sc->sc_dev, &pba, vpci_print); } void vpci_init_iommu(struct vpci_softc *sc, struct vpci_pbm *pbm) { struct iommu_state *is = &pbm->vp_is; int *vdma = NULL; int nitem; int tsbsize = 0; u_int32_t iobase = -1; u_int32_t iolen = 0; char *name; pbm->vp_sb.sb_is = is; is->is_bustag = sc->sc_bustag; if (bus_space_subregion(is->is_bustag, sc->sc_csrh, 0x40000, 0x100, &is->is_iommu)) { panic("vpci: unable to create iommu handle"); } /* Construct tsbsize */ if (!prom_getprop(sc->sc_node, "virtual-dma", sizeof(vdma), &nitem, (void **)&vdma)) { DPRINTF(VDB_BUSMAP, ("vpci_init_iommu: vdma[0]=0x%x vdma[1]=0x%x\n", vdma[0], vdma[1])); iobase = vdma[0]; iolen = vdma[1]; for (tsbsize = 8; (1 << (tsbsize+23)) > iolen;) tsbsize--; DPRINTF(VDB_BUSMAP, ("vpci_init_iommu: iobase=0x%x iolen = 0x%x tsbsize=0x%x\n", iobase, iolen, tsbsize)); free(vdma, M_DEVBUF); } else panic("vpci_init_iommu: getprop virtual-dma failed"); aprint_normal(" vdma %x length %x\n", iobase, iolen); aprint_naive("\n"); /* We have no STC. */ is->is_sb[0] = NULL; name = (char *)malloc(32, M_DEVBUF, M_NOWAIT); if (name == NULL) panic("couldn't malloc iommu name"); snprintf(name, 32, "%s dvma", device_xname(sc->sc_dev)); /* Tell iommu how to set the TSB size. */ is->is_flags = IOMMU_TSBSIZE_IN_PTSB; is->is_devhandle = pbm->vp_devhandle; iommu_init(name, is, tsbsize, iobase); } int vpci_print(void *aux, const char *p) { if (p == NULL) return (UNCONF); return (QUIET); } pcireg_t vpci_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg) { struct vpci_pbm *pbm = pc->cookie; uint64_t error_flag, data; int64_t hv_rc; DPRINTF(VDB_CONF_READ, ("%s: tag %lx reg %x ", __func__, (long)tag, reg)); hv_rc = hv_pci_config_get(pbm->vp_devhandle, PCITAG_OFFSET(tag), reg, 4, &error_flag, &data); if (hv_rc != H_EOK) panic("hv_pci_config_get() failed - rc = %" PRId64 "\n", hv_rc); pcireg_t val = error_flag ? (pcireg_t)~0 : data; DPRINTF(VDB_CONF_READ, (" returning %08x\n", (u_int)val)); return val; } void vpci_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg, pcireg_t data) { struct vpci_pbm *pbm = pc->cookie; uint64_t error_flag; int64_t hv_rc; DPRINTF(VDB_CONF_WRITE, ("%s: tag %lx; reg %x; data %x", __func__, (long)tag, reg, (int)data)); hv_rc = hv_pci_config_put(pbm->vp_devhandle, PCITAG_OFFSET(tag), reg, 4, data, &error_flag); if (hv_rc != H_EOK) panic("hv_pci_config_put() failed - rc = %" PRId64 "\n", hv_rc); DPRINTF(VDB_CONF_WRITE, (" .. done\n")); } /* * Bus-specific interrupt mapping */ int vpci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp) { struct vpci_pbm *pbm = pa->pa_pc->cookie; uint64_t devhandle = pbm->vp_devhandle; uint64_t devino = INTINO(*ihp); DPRINTF(VDB_INTR, ("vpci_intr_map(): devino 0x%lx\n", devino)); uint64_t sysino; int err; if (*ihp != (pci_intr_handle_t)-1) { err = hv_intr_devino_to_sysino(devhandle, devino, &sysino); if (err != H_EOK) return (-1); KASSERT(sysino == INTVEC(sysino)); *ihp = sysino; DPRINTF(VDB_INTR, ("vpci_intr_map(): sysino 0x%lx\n", sysino)); return (0); } return (-1); } bus_space_tag_t vpci_alloc_mem_tag(struct vpci_pbm *vp) { return (vpci_alloc_bus_tag(vp, "mem", PCI_MEMORY_BUS_SPACE)); } bus_space_tag_t vpci_alloc_io_tag(struct vpci_pbm *vp) { return (vpci_alloc_bus_tag(vp, "io", PCI_IO_BUS_SPACE)); } bus_space_tag_t vpci_alloc_config_tag(struct vpci_pbm *vp) { return (vpci_alloc_bus_tag(vp, "cfg", PCI_CONFIG_BUS_SPACE)); } bus_space_tag_t vpci_alloc_bus_tag(struct vpci_pbm *pbm, const char *name, int type) { struct vpci_softc *sc = pbm->vp_sc; struct sparc_bus_space_tag *bt; bt = malloc(sizeof(*bt), M_DEVBUF, M_NOWAIT | M_ZERO); if (bt == NULL) panic("vpci: could not allocate bus tag"); #if 0 snprintf(bt->name, sizeof(bt->name), "%s-pbm_%s(%d/%2.2x)", device_xname(sc->sc_dev), name, ss, asi); #endif bt->cookie = pbm; bt->parent = sc->sc_bustag; bt->type = type; bt->sparc_bus_map = vpci_bus_map; bt->sparc_bus_mmap = vpci_bus_mmap; bt->sparc_intr_establish = vpci_intr_establish; return (bt); } bus_dma_tag_t vpci_alloc_dma_tag(struct vpci_pbm *pbm) { struct vpci_softc *sc = pbm->vp_sc; bus_dma_tag_t dt, pdt = sc->sc_dmat; dt = malloc(sizeof(*dt), M_DEVBUF, M_NOWAIT | M_ZERO); if (dt == NULL) panic("vpci: could not alloc dma tag"); dt->_cookie = pbm; dt->_parent = pdt; #define PCOPY(x) dt->x = pdt->x dt->_dmamap_create = vpci_dmamap_create; PCOPY(_dmamap_destroy); dt->_dmamap_load = iommu_dvmamap_load; PCOPY(_dmamap_load_mbuf); PCOPY(_dmamap_load_uio); dt->_dmamap_load_raw = iommu_dvmamap_load_raw; dt->_dmamap_unload = iommu_dvmamap_unload; dt->_dmamap_sync = iommu_dvmamap_sync; dt->_dmamem_alloc = iommu_dvmamem_alloc; dt->_dmamem_free = iommu_dvmamem_free; dt->_dmamem_map = iommu_dvmamem_map; dt->_dmamem_unmap = iommu_dvmamem_unmap; PCOPY(_dmamem_mmap); #undef PCOPY return (dt); } pci_chipset_tag_t vpci_alloc_chipset(struct vpci_pbm *pbm, int node, pci_chipset_tag_t pc) { pci_chipset_tag_t npc; npc = malloc(sizeof *npc, M_DEVBUF, M_NOWAIT); if (npc == NULL) panic("vpci: could not allocate pci_chipset_tag_t"); memcpy(npc, pc, sizeof *pc); npc->cookie = pbm; npc->rootnode = node; npc->spc_conf_read = vpci_conf_read; npc->spc_conf_write = vpci_conf_write; npc->spc_intr_map = vpci_intr_map; npc->spc_intr_establish = vpci_pci_intr_establish; npc->spc_find_ino = NULL; return (npc); } int vpci_dmamap_create(bus_dma_tag_t t, bus_size_t size, int nsegments, bus_size_t maxsegsz, bus_size_t boundary, int flags, bus_dmamap_t *dmamp) { struct vpci_pbm *pbm = t->_cookie; int error; error = bus_dmamap_create(t->_parent, size, nsegments, maxsegsz, boundary, flags, dmamp); if (error == 0) (*dmamp)->_dm_cookie = &pbm->vp_sb; return error; } int vpci_bus_map(bus_space_tag_t t, bus_addr_t offset, bus_size_t size, int flags, vaddr_t unused, bus_space_handle_t *hp) { struct vpci_pbm *pbm = t->cookie; struct vpci_softc *sc = pbm->vp_sc; int i, ss; DPRINTF(VDB_BUSMAP, ("vpci_bus_map: type %d off %qx sz %qx flags %d", t->type, (unsigned long long)offset, (unsigned long long)size, flags)); ss = sparc_pci_childspace(t->type); DPRINTF(VDB_BUSMAP, (" cspace %d\n", ss)); if (t->parent == 0 || t->parent->sparc_bus_map == 0) { printf("\n_vpci_bus_map: invalid parent"); return (EINVAL); } for (i = 0; i < pbm->vp_nrange; i++) { bus_addr_t paddr; struct vpci_range *pr = &pbm->vp_range[i]; if (((pr->cspace >> 24) & 0x03) != ss) continue; paddr = BUS_ADDR(pr->phys_hi, pr->phys_lo + offset); return ((*sc->sc_bustag->sparc_bus_map)(t, paddr, size, flags, 0, hp)); } return (EINVAL); } paddr_t vpci_bus_mmap(bus_space_tag_t t, bus_addr_t paddr, off_t off, int prot, int flags) { bus_addr_t offset = paddr; struct vpci_pbm *pbm = t->cookie; struct vpci_softc *sc = pbm->vp_sc; int i, ss; ss = sparc_pci_childspace(t->type); DPRINTF(VDB_BUSMAP, ("vpci_bus_mmap: prot %d flags %d pa %qx\n", prot, flags, (unsigned long long)paddr)); if (t->parent == 0 || t->parent->sparc_bus_mmap == 0) { printf("\n_vpci_bus_mmap: invalid parent"); return (-1); } for (i = 0; i < pbm->vp_nrange; i++) { struct vpci_range *pr = &pbm->vp_range[i]; if (((pr->cspace >> 24) & 0x03) != ss) continue; paddr = BUS_ADDR(pr->phys_hi, pr->phys_lo + offset); return (bus_space_mmap(sc->sc_bustag, paddr, off, prot, flags)); } return (-1); } void * vpci_intr_establish(bus_space_tag_t t, int ihandle, int level, int (*handler)(void *), void *arg, void (*fastvec)(void) /* ignored */) { struct intrhand *ih = NULL; int ino; ino = INTINO(ihandle); DPRINTF(VDB_INTR, ("%s: ih %lx; level %d ino %#x\n", __func__, (u_long)ihandle, level, ino)); if (level == IPL_NONE) { level = INTLEV(ihandle); printf(": IPL_NONE, setting IPL %d.\n", level); } if (level == IPL_NONE) { level = 2; printf(": no IPL, setting IPL 2.\n"); } ino |= INTVEC(ihandle); DPRINTF(VDB_INTR, ("%s: ih %lx; level %d ino %#x\n", __func__, (u_long)ihandle, level, ino)); ih = intrhand_alloc(); ih->ih_ivec = ihandle; ih->ih_fun = handler; ih->ih_arg = arg; ih->ih_pil = level; ih->ih_number = ino; ih->ih_pending = 0; ih->ih_ack = vpci_intr_ack; intr_establish(ih->ih_pil, level != IPL_VM, ih); uint64_t sysino = INTVEC(ihandle); DPRINTF(VDB_INTR, ("vpci_intr_establish(): sysino 0x%lx\n", sysino)); int err; err = hv_intr_settarget(sysino, cpus->ci_cpuid); if (err != H_EOK) printf("hv_intr_settarget(%lu, %u) failed - err = %d\n", (long unsigned int)sysino, cpus->ci_cpuid, err); /* Clear pending interrupts. */ err = hv_intr_setstate(sysino, INTR_IDLE); if (err != H_EOK) printf("hv_intr_setstate(%lu, INTR_IDLE) failed - err = %d\n", (long unsigned int)sysino, err); err = hv_intr_setenabled(sysino, INTR_ENABLED); if (err != H_EOK) printf("hv_intr_setenabled(%lu) failed - err = %d\n", (long unsigned int)sysino, err); DPRINTF(VDB_INTR, ("%s() returning %p\n", __func__, ih)); return (ih); } void vpci_intr_ack(struct intrhand *ih) { int err; err = hv_intr_setstate(ih->ih_number, INTR_IDLE); if (err != H_EOK) panic("%s(%u, INTR_IDLE) failed - err = %d\n", __func__, ih->ih_number, err); } static void * vpci_pci_intr_establish(pci_chipset_tag_t pc, pci_intr_handle_t ih, int level, int (*func)(void *), void *arg) { void *cookie; struct vpci_pbm *pbm = (struct vpci_pbm *)pc->cookie; DPRINTF(VDB_INTR, ("%s: ih %lx; level %d\n", __func__, (u_long)ih, level)); cookie = bus_intr_establish(pbm->vp_memt, ih, level, func, arg); DPRINTF(VDB_INTR, ("%s: returning handle %p\n", __func__, cookie)); return (cookie); }