/* $OpenBSD: pci_machdep.c,v 1.88 2024/10/10 06:00:42 jsg Exp $ */ /* $NetBSD: pci_machdep.c,v 1.28 1997/06/06 23:29:17 thorpej Exp $ */ /*- * Copyright (c) 1997 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, * NASA Ames Research Center. * * 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 FOUNDATION OR CONTRIBUTORS * 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. */ /* * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. * Copyright (c) 1994 Charles Hannum. 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Charles Hannum. * 4. 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. */ /* * Machine-specific functions for PCI autoconfiguration. * * On PCs, there are two methods of generating PCI configuration cycles. * We try to detect the appropriate mechanism for this machine and set * up a few function pointers to access the correct method directly. * * The configuration method can be hard-coded in the config file by * using `options PCI_CONF_MODE=N', where `N' is the configuration mode * as defined section 3.6.4.1, `Generating Configuration Cycles'. */ #include #include #include #include #include #include #include #include #include #include #include #include #include "bios.h" #if NBIOS > 0 extern bios_pciinfo_t *bios_pciinfo; #endif #include #include #include #include #include #include "ioapic.h" #include #include #include #if NIOAPIC > 0 #include #endif #include "pcibios.h" #if NPCIBIOS > 0 #include #endif int pci_mode = -1; /* * Memory Mapped Configuration space access. * * Since mapping the whole configuration space will cost us up to * 256MB of kernel virtual memory, we use separate mappings per bus. * The mappings are created on-demand, such that we only use kernel * virtual memory for busses that are actually present. */ bus_addr_t pci_mcfg_addr; int pci_mcfg_min_bus, pci_mcfg_max_bus; bus_space_tag_t pci_mcfgt = I386_BUS_SPACE_MEM; bus_space_handle_t pci_mcfgh[256]; void pci_mcfg_map_bus(int); struct mutex pci_conf_lock = MUTEX_INITIALIZER(IPL_HIGH); #define PCI_CONF_LOCK() \ do { \ mtx_enter(&pci_conf_lock); \ } while (0) #define PCI_CONF_UNLOCK() \ do { \ mtx_leave(&pci_conf_lock); \ } while (0) #define PCI_MODE1_ENABLE 0x80000000UL #define PCI_MODE1_ADDRESS_REG 0x0cf8 #define PCI_MODE1_DATA_REG 0x0cfc #define PCI_MODE2_ENABLE_REG 0x0cf8 #define PCI_MODE2_FORWARD_REG 0x0cfa #define _m1tag(b, d, f) \ (PCI_MODE1_ENABLE | ((b) << 16) | ((d) << 11) | ((f) << 8)) #define _qe(bus, dev, fcn, vend, prod) \ {_m1tag(bus, dev, fcn), PCI_ID_CODE(vend, prod)} struct { u_int32_t tag; pcireg_t id; } pcim1_quirk_tbl[] = { _qe(0, 0, 0, PCI_VENDOR_COMPAQ, PCI_PRODUCT_COMPAQ_TRIFLEX1), /* XXX Triflex2 not tested */ _qe(0, 0, 0, PCI_VENDOR_COMPAQ, PCI_PRODUCT_COMPAQ_TRIFLEX2), _qe(0, 0, 0, PCI_VENDOR_COMPAQ, PCI_PRODUCT_COMPAQ_TRIFLEX4), /* Triton needed for Connectix Virtual PC */ _qe(0, 0, 0, PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_82437FX), /* Connectix Virtual PC 5 has a 440BX */ _qe(0, 0, 0, PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_82443BX_NOAGP), {0, 0xffffffff} /* patchable */ }; #undef _m1tag #undef _qe /* * PCI doesn't have any special needs; just use the generic versions * of these functions. */ struct bus_dma_tag pci_bus_dma_tag = { NULL, /* _cookie */ _bus_dmamap_create, _bus_dmamap_destroy, _bus_dmamap_load, _bus_dmamap_load_mbuf, _bus_dmamap_load_uio, _bus_dmamap_load_raw, _bus_dmamap_unload, _bus_dmamap_sync, _bus_dmamem_alloc, _bus_dmamem_alloc_range, _bus_dmamem_free, _bus_dmamem_map, _bus_dmamem_unmap, _bus_dmamem_mmap, }; void pci_mcfg_init(bus_space_tag_t iot, bus_addr_t addr, int segment, int min_bus, int max_bus) { if (segment == 0) { pci_mcfgt = iot; pci_mcfg_addr = addr; pci_mcfg_min_bus = min_bus; pci_mcfg_max_bus = max_bus; } } pci_chipset_tag_t pci_lookup_segment(int segment) { KASSERT(segment == 0); return NULL; } void pci_attach_hook(struct device *parent, struct device *self, struct pcibus_attach_args *pba) { pci_chipset_tag_t pc = pba->pba_pc; pcitag_t tag; pcireg_t id, class; #if NBIOS > 0 if (pba->pba_bus == 0) printf(": configuration mode %d (%s)", pci_mode, (bios_pciinfo?"bios":"no bios")); #else if (pba->pba_bus == 0) printf(": configuration mode %d", pci_mode); #endif if (pba->pba_bus != 0) return; /* * Machines that use the non-standard method of generating PCI * configuration cycles are way too old to support MSI. */ if (pci_mode == 2) return; /* * In order to decide whether the system supports MSI we look * at the host bridge, which should be device 0 function 0 on * bus 0. It is better to not enable MSI on systems that * support it than the other way around, so be conservative * here. So we don't enable MSI if we don't find a host * bridge there. We also deliberately don't enable MSI on * chipsets from low-end manufacturers like VIA and SiS. */ tag = pci_make_tag(pc, 0, 0, 0); id = pci_conf_read(pc, tag, PCI_ID_REG); class = pci_conf_read(pc, tag, PCI_CLASS_REG); if (PCI_CLASS(class) != PCI_CLASS_BRIDGE || PCI_SUBCLASS(class) != PCI_SUBCLASS_BRIDGE_HOST) return; switch (PCI_VENDOR(id)) { case PCI_VENDOR_INTEL: /* * For Intel platforms, MSI support was introduced * with the new Pentium 4 processor interrupt delivery * mechanism, so we blacklist all PCI chipsets that * support Pentium III and earlier CPUs. */ switch (PCI_PRODUCT(id)) { case PCI_PRODUCT_INTEL_PCMC: /* 82434LX/NX */ case PCI_PRODUCT_INTEL_82437FX: case PCI_PRODUCT_INTEL_82437MX: case PCI_PRODUCT_INTEL_82437VX: case PCI_PRODUCT_INTEL_82439HX: case PCI_PRODUCT_INTEL_82439TX: case PCI_PRODUCT_INTEL_82440BX: case PCI_PRODUCT_INTEL_82440BX_AGP: case PCI_PRODUCT_INTEL_82440MX_HB: case PCI_PRODUCT_INTEL_82441FX: case PCI_PRODUCT_INTEL_82443BX: case PCI_PRODUCT_INTEL_82443BX_AGP: case PCI_PRODUCT_INTEL_82443BX_NOAGP: case PCI_PRODUCT_INTEL_82443GX: case PCI_PRODUCT_INTEL_82443LX: case PCI_PRODUCT_INTEL_82443LX_AGP: case PCI_PRODUCT_INTEL_82810_HB: case PCI_PRODUCT_INTEL_82810E_HB: case PCI_PRODUCT_INTEL_82815_HB: case PCI_PRODUCT_INTEL_82820_HB: case PCI_PRODUCT_INTEL_82830M_HB: case PCI_PRODUCT_INTEL_82840_HB: break; default: pba->pba_flags |= PCI_FLAGS_MSI_ENABLED; break; } break; case PCI_VENDOR_NVIDIA: /* * Since NVIDIA chipsets are completely undocumented, * we have to make a guess here. We assume that all * chipsets that support PCIe include support for MSI, * since support for MSI is mandated by the PCIe * standard. */ switch (PCI_PRODUCT(id)) { case PCI_PRODUCT_NVIDIA_NFORCE_PCHB: case PCI_PRODUCT_NVIDIA_NFORCE2_PCHB: break; default: pba->pba_flags |= PCI_FLAGS_MSI_ENABLED; break; } break; case PCI_VENDOR_AMD: /* * The AMD-750 and AMD-760 chipsets don't support MSI. */ switch (PCI_PRODUCT(id)) { case PCI_PRODUCT_AMD_SC751_SC: case PCI_PRODUCT_AMD_761_PCHB: case PCI_PRODUCT_AMD_762_PCHB: break; default: pba->pba_flags |= PCI_FLAGS_MSI_ENABLED; break; } break; } /* Enable MSI for QEMU */ id = pci_conf_read(pc, tag, PCI_SUBSYS_ID_REG); if (PCI_VENDOR(id) == PCI_VENDOR_QUMRANET) pba->pba_flags |= PCI_FLAGS_MSI_ENABLED; /* * Don't enable MSI on a HyperTransport bus. In order to * determine that bus 0 is a HyperTransport bus, we look at * device 24 function 0, which is the HyperTransport * host/primary interface integrated on most 64-bit AMD CPUs. * If that device has a HyperTransport capability, bus 0 must * be a HyperTransport bus and we disable MSI. */ tag = pci_make_tag(pc, 0, 24, 0); if (pci_get_capability(pc, tag, PCI_CAP_HT, NULL, NULL)) pba->pba_flags &= ~PCI_FLAGS_MSI_ENABLED; } int pci_bus_maxdevs(pci_chipset_tag_t pc, int busno) { /* * Bus number is irrelevant. If Configuration Mechanism 2 is in * use, can only have devices 0-15 on any bus. If Configuration * Mechanism 1 is in use, can have devices 0-31 (i.e. the `normal' * range). */ if (pci_mode == 2) return (16); else return (32); } pcitag_t pci_make_tag(pci_chipset_tag_t pc, int bus, int device, int function) { pcitag_t tag; switch (pci_mode) { case 1: if (bus >= 256 || device >= 32 || function >= 8) panic("pci_make_tag: bad request"); tag.mode1 = PCI_MODE1_ENABLE | (bus << 16) | (device << 11) | (function << 8); break; case 2: if (bus >= 256 || device >= 16 || function >= 8) panic("pci_make_tag: bad request"); tag.mode2.port = 0xc000 | (device << 8); tag.mode2.enable = 0xf0 | (function << 1); tag.mode2.forward = bus; break; default: panic("pci_make_tag: mode not configured"); } return tag; } void pci_decompose_tag(pci_chipset_tag_t pc, pcitag_t tag, int *bp, int *dp, int *fp) { switch (pci_mode) { case 1: if (bp != NULL) *bp = (tag.mode1 >> 16) & 0xff; if (dp != NULL) *dp = (tag.mode1 >> 11) & 0x1f; if (fp != NULL) *fp = (tag.mode1 >> 8) & 0x7; break; case 2: if (bp != NULL) *bp = tag.mode2.forward & 0xff; if (dp != NULL) *dp = (tag.mode2.port >> 8) & 0xf; if (fp != NULL) *fp = (tag.mode2.enable >> 1) & 0x7; break; default: panic("pci_decompose_tag: mode not configured"); } } int pci_conf_size(pci_chipset_tag_t pc, pcitag_t tag) { int bus; if (pci_mcfg_addr) { pci_decompose_tag(pc, tag, &bus, NULL, NULL); if (bus >= pci_mcfg_min_bus && bus <= pci_mcfg_max_bus) return PCIE_CONFIG_SPACE_SIZE; } return PCI_CONFIG_SPACE_SIZE; } void pci_mcfg_map_bus(int bus) { if (pci_mcfgh[bus]) return; if (bus_space_map(pci_mcfgt, pci_mcfg_addr + (bus << 20), 1 << 20, 0, &pci_mcfgh[bus])) panic("pci_conf_read: cannot map mcfg space"); } pcireg_t pci_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg) { pcireg_t data; int bus; KASSERT((reg & 0x3) == 0); if (pci_mcfg_addr && reg >= PCI_CONFIG_SPACE_SIZE) { pci_decompose_tag(pc, tag, &bus, NULL, NULL); if (bus >= pci_mcfg_min_bus && bus <= pci_mcfg_max_bus) { pci_mcfg_map_bus(bus); data = bus_space_read_4(pci_mcfgt, pci_mcfgh[bus], (tag.mode1 & 0x000ff00) << 4 | reg); return data; } } PCI_CONF_LOCK(); switch (pci_mode) { case 1: outl(PCI_MODE1_ADDRESS_REG, tag.mode1 | reg); data = inl(PCI_MODE1_DATA_REG); outl(PCI_MODE1_ADDRESS_REG, 0); break; case 2: outb(PCI_MODE2_ENABLE_REG, tag.mode2.enable); outb(PCI_MODE2_FORWARD_REG, tag.mode2.forward); data = inl(tag.mode2.port | reg); outb(PCI_MODE2_ENABLE_REG, 0); break; default: panic("pci_conf_read: mode not configured"); } PCI_CONF_UNLOCK(); return data; } void pci_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg, pcireg_t data) { int bus; KASSERT((reg & 0x3) == 0); if (pci_mcfg_addr && reg >= PCI_CONFIG_SPACE_SIZE) { pci_decompose_tag(pc, tag, &bus, NULL, NULL); if (bus >= pci_mcfg_min_bus && bus <= pci_mcfg_max_bus) { pci_mcfg_map_bus(bus); bus_space_write_4(pci_mcfgt, pci_mcfgh[bus], (tag.mode1 & 0x000ff00) << 4 | reg, data); return; } } PCI_CONF_LOCK(); switch (pci_mode) { case 1: outl(PCI_MODE1_ADDRESS_REG, tag.mode1 | reg); outl(PCI_MODE1_DATA_REG, data); outl(PCI_MODE1_ADDRESS_REG, 0); break; case 2: outb(PCI_MODE2_ENABLE_REG, tag.mode2.enable); outb(PCI_MODE2_FORWARD_REG, tag.mode2.forward); outl(tag.mode2.port | reg, data); outb(PCI_MODE2_ENABLE_REG, 0); break; default: panic("pci_conf_write: mode not configured"); } PCI_CONF_UNLOCK(); } int pci_mode_detect(void) { #ifdef PCI_CONF_MODE #if (PCI_CONF_MODE == 1) || (PCI_CONF_MODE == 2) return (pci_mode = PCI_CONF_MODE); #else #error Invalid PCI configuration mode. #endif #else u_int32_t sav, val; int i; pcireg_t idreg; if (pci_mode != -1) return (pci_mode); #if NBIOS > 0 /* * If we have PCI info passed from the BIOS, use the mode given there * for all of this code. If not, pass on through to the previous tests * to try and divine the correct mode. */ if (bios_pciinfo != NULL) { if (bios_pciinfo->pci_chars & 0x2) return (pci_mode = 2); if (bios_pciinfo->pci_chars & 0x1) return (pci_mode = 1); /* We should never get here, but if we do, fall through... */ } #endif /* * We try to divine which configuration mode the host bridge wants. * * This should really be done using the PCI BIOS. If we get here, the * PCI BIOS does not exist, or the boot blocks did not provide the * information. */ sav = inl(PCI_MODE1_ADDRESS_REG); pci_mode = 1; /* assume this for now */ /* * catch some known buggy implementations of mode 1 */ for (i = 0; i < sizeof(pcim1_quirk_tbl) / sizeof(pcim1_quirk_tbl[0]); i++) { pcitag_t t; if (!pcim1_quirk_tbl[i].tag) break; t.mode1 = pcim1_quirk_tbl[i].tag; idreg = pci_conf_read(0, t, PCI_ID_REG); /* needs "pci_mode" */ if (idreg == pcim1_quirk_tbl[i].id) { #ifdef DEBUG printf("known mode 1 PCI chipset (%08x)\n", idreg); #endif return (pci_mode); } } /* * Strong check for standard compliant mode 1: * 1. bit 31 ("enable") can be set * 2. byte/word access does not affect register */ outl(PCI_MODE1_ADDRESS_REG, PCI_MODE1_ENABLE); outb(PCI_MODE1_ADDRESS_REG + 3, 0); outw(PCI_MODE1_ADDRESS_REG + 2, 0); val = inl(PCI_MODE1_ADDRESS_REG); if ((val & 0x80fffffc) != PCI_MODE1_ENABLE) { #ifdef DEBUG printf("pci_mode_detect: mode 1 enable failed (%x)\n", val); #endif goto not1; } outl(PCI_MODE1_ADDRESS_REG, 0); val = inl(PCI_MODE1_ADDRESS_REG); if ((val & 0x80fffffc) != 0) goto not1; return (pci_mode); not1: outl(PCI_MODE1_ADDRESS_REG, sav); /* * This mode 2 check is quite weak (and known to give false * positives on some Compaq machines). * However, this doesn't matter, because this is the * last test, and simply no PCI devices will be found if * this happens. */ outb(PCI_MODE2_ENABLE_REG, 0); outb(PCI_MODE2_FORWARD_REG, 0); if (inb(PCI_MODE2_ENABLE_REG) != 0 || inb(PCI_MODE2_FORWARD_REG) != 0) goto not2; return (pci_mode = 2); not2: return (pci_mode = 0); #endif } int pci_intr_map_msi(struct pci_attach_args *pa, pci_intr_handle_t *ihp) { pci_chipset_tag_t pc = pa->pa_pc; pcitag_t tag = pa->pa_tag; if ((pa->pa_flags & PCI_FLAGS_MSI_ENABLED) == 0 || mp_busses == NULL || pci_get_capability(pc, tag, PCI_CAP_MSI, NULL, NULL) == 0) return 1; ihp->tag = tag; ihp->line = APIC_INT_VIA_MSG; ihp->pin = 0; return 0; } int pci_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp) { int pin = pa->pa_rawintrpin; int line = pa->pa_intrline; #if NIOAPIC > 0 struct mp_intr_map *mip; int bus, dev, func; #endif if (pin == 0) { /* No IRQ used. */ goto bad; } if (pin > PCI_INTERRUPT_PIN_MAX) { printf("pci_intr_map: bad interrupt pin %d\n", pin); goto bad; } ihp->tag = pa->pa_tag; ihp->line = line; ihp->pin = pin; #if NIOAPIC > 0 pci_decompose_tag (pa->pa_pc, pa->pa_tag, &bus, &dev, &func); if (!(ihp->line & PCI_INT_VIA_ISA) && mp_busses != NULL) { int mpspec_pin = (dev << 2) | (pin - 1); if (bus < mp_nbusses) { for (mip = mp_busses[bus].mb_intrs; mip != NULL; mip = mip->next) { if (&mp_busses[bus] == mp_isa_bus || &mp_busses[bus] == mp_eisa_bus) continue; if (mip->bus_pin == mpspec_pin) { ihp->line = mip->ioapic_ih | line; return 0; } } } if (pa->pa_bridgetag) { int swizpin = PPB_INTERRUPT_SWIZZLE(pin, dev); if (pa->pa_bridgeih[swizpin - 1].line != -1) { ihp->line = pa->pa_bridgeih[swizpin - 1].line; ihp->line |= line; return 0; } } /* * No explicit PCI mapping found. This is not fatal, * we'll try the ISA (or possibly EISA) mappings next. */ } #endif #if NPCIBIOS > 0 pci_intr_header_fixup(pa->pa_pc, pa->pa_tag, ihp); line = ihp->line & APIC_INT_LINE_MASK; #endif /* * Section 6.2.4, `Miscellaneous Functions', says that 255 means * `unknown' or `no connection' on a PC. We assume that a device with * `no connection' either doesn't have an interrupt (in which case the * pin number should be 0, and would have been noticed above), or * wasn't configured by the BIOS (in which case we punt, since there's * no real way we can know how the interrupt lines are mapped in the * hardware). * * XXX * Since IRQ 0 is only used by the clock, and we can't actually be sure * that the BIOS did its job, we also recognize that as meaning that * the BIOS has not configured the device. */ if (line == 0 || line == I386_PCI_INTERRUPT_LINE_NO_CONNECTION) goto bad; if (line >= ICU_LEN) { printf("pci_intr_map: bad interrupt line %d\n", line); goto bad; } if (line == 2) { printf("pci_intr_map: changed line 2 to line 9\n"); line = 9; } #if NIOAPIC > 0 if (!(ihp->line & PCI_INT_VIA_ISA) && mp_busses != NULL) { if (mip == NULL && mp_isa_bus) { for (mip = mp_isa_bus->mb_intrs; mip != NULL; mip = mip->next) { if (mip->bus_pin == line) { ihp->line = mip->ioapic_ih | line; return 0; } } } if (mip == NULL && mp_eisa_bus) { for (mip = mp_eisa_bus->mb_intrs; mip != NULL; mip = mip->next) { if (mip->bus_pin == line) { ihp->line = mip->ioapic_ih | line; return 0; } } } if (mip == NULL) { printf("pci_intr_map: " "bus %d dev %d func %d pin %d; line %d\n", bus, dev, func, pin, line); printf("pci_intr_map: no MP mapping found\n"); } } #endif return 0; bad: ihp->line = -1; return 1; } const char * pci_intr_string(pci_chipset_tag_t pc, pci_intr_handle_t ih) { static char irqstr[64]; int line = ih.line & APIC_INT_LINE_MASK; if (ih.line & APIC_INT_VIA_MSG) return ("msi"); #if NIOAPIC > 0 if (ih.line & APIC_INT_VIA_APIC) { snprintf(irqstr, sizeof irqstr, "apic %d int %d", APIC_IRQ_APIC(ih.line), APIC_IRQ_PIN(ih.line)); return (irqstr); } #endif if (line == 0 || line >= ICU_LEN || line == 2) panic("pci_intr_string: bogus handle 0x%x", line); snprintf(irqstr, sizeof irqstr, "irq %d", line); return (irqstr); } #include "acpiprt.h" #if NACPIPRT > 0 void acpiprt_route_interrupt(int bus, int dev, int pin); #endif extern struct intrhand *apic_intrhand[256]; extern int apic_maxlevel[256]; void * pci_intr_establish_cpu(pci_chipset_tag_t pc, pci_intr_handle_t ih, int level, struct cpu_info *ci, int (*func)(void *), void *arg, const char *what) { if (ci != NULL && ci != &cpu_info_primary) return (NULL); return pci_intr_establish(pc, ih, level, func, arg, what); } void * pci_intr_establish(pci_chipset_tag_t pc, pci_intr_handle_t ih, int level, int (*func)(void *), void *arg, const char *what) { void *ret; int bus, dev; int l = ih.line & APIC_INT_LINE_MASK; pcitag_t tag = ih.tag; int irq = ih.line; if (ih.line & APIC_INT_VIA_MSG) { struct intrhand *ih; pcireg_t reg, addr; int off, vec; int flags; flags = level & IPL_MPSAFE; level &= ~IPL_MPSAFE; KASSERT(level <= IPL_TTY || flags & IPL_MPSAFE); if (pci_get_capability(pc, tag, PCI_CAP_MSI, &off, ®) == 0) panic("%s: no msi capability", __func__); vec = idt_vec_alloc(level, level + 15); if (vec == 0) return (NULL); ih = malloc(sizeof(*ih), M_DEVBUF, cold ? M_NOWAIT : M_WAITOK); if (ih == NULL) panic("%s: can't malloc handler info", __func__); ih->ih_fun = func; ih->ih_arg = arg; ih->ih_next = NULL; ih->ih_level = level; ih->ih_flags = flags; ih->ih_irq = irq; ih->ih_pin = tag.mode1; ih->ih_vec = vec; evcount_attach(&ih->ih_count, what, &ih->ih_vec); apic_maxlevel[vec] = level; apic_intrhand[vec] = ih; idt_vec_set(vec, apichandler[vec & 0xf]); addr = 0xfee00000UL | (cpu_info_primary.ci_apicid << 12); if (reg & PCI_MSI_MC_C64) { pci_conf_write(pc, tag, off + PCI_MSI_MA, addr); pci_conf_write(pc, tag, off + PCI_MSI_MAU32, 0); pci_conf_write(pc, tag, off + PCI_MSI_MD64, vec); } else { pci_conf_write(pc, tag, off + PCI_MSI_MA, addr); pci_conf_write(pc, tag, off + PCI_MSI_MD32, vec); } pci_conf_write(pc, tag, off, reg | PCI_MSI_MC_MSIE); return (ih); } pci_decompose_tag(pc, ih.tag, &bus, &dev, NULL); #if NACPIPRT > 0 acpiprt_route_interrupt(bus, dev, ih.pin); #endif #if NIOAPIC > 0 if (l != -1 && ih.line & APIC_INT_VIA_APIC) return (apic_intr_establish(ih.line, IST_LEVEL, level, func, arg, what)); #endif if (l == 0 || l >= ICU_LEN || l == 2) panic("pci_intr_establish: bogus handle 0x%x", l); ret = isa_intr_establish(NULL, l, IST_LEVEL, level, func, arg, what); #if NPCIBIOS > 0 if (ret) pci_intr_route_link(pc, &ih); #endif return (ret); } void pci_intr_disestablish(pci_chipset_tag_t pc, void *cookie) { struct intrhand *ih = cookie; if (ih->ih_irq & APIC_INT_VIA_MSG) { pcitag_t tag = { .mode1 = ih->ih_pin }; pcireg_t reg; int off; if (pci_get_capability(pc, tag, PCI_CAP_MSI, &off, ®)) pci_conf_write(pc, tag, off, reg &= ~PCI_MSI_MC_MSIE); apic_maxlevel[ih->ih_vec] = 0; apic_intrhand[ih->ih_vec] = NULL; idt_vec_free(ih->ih_vec); evcount_detach(&ih->ih_count); free(ih, M_DEVBUF, sizeof *ih); return; } /* XXX oh, unroute the pci int link? */ isa_intr_disestablish(NULL, cookie); } struct extent *pciio_ex; struct extent *pcimem_ex; struct extent *pcibus_ex; void pci_init_extents(void) { bios_memmap_t *bmp; u_int64_t size; if (pciio_ex == NULL) { /* * We only have 64K of addressable I/O space. * However, since BARs may contain garbage, we cover * the full 32-bit address space defined by PCI of * which we only make the first 64K available. */ pciio_ex = extent_create("pciio", 0, 0xffffffff, M_DEVBUF, NULL, 0, EX_NOWAIT | EX_FILLED); if (pciio_ex == NULL) return; extent_free(pciio_ex, 0, 0x10000, EX_NOWAIT); } if (pcimem_ex == NULL) { pcimem_ex = extent_create("pcimem", 0, 0xffffffff, M_DEVBUF, NULL, 0, EX_NOWAIT); if (pcimem_ex == NULL) return; for (bmp = bios_memmap; bmp->type != BIOS_MAP_END; bmp++) { /* * Ignore address space beyond 4G. */ if (bmp->addr >= 0x100000000ULL) continue; size = bmp->size; if (bmp->addr + size >= 0x100000000ULL) size = 0x100000000ULL - bmp->addr; /* Ignore zero-sized regions. */ if (size == 0) continue; if (extent_alloc_region(pcimem_ex, bmp->addr, size, EX_NOWAIT)) printf("memory map conflict 0x%llx/0x%llx\n", bmp->addr, bmp->size); } /* Take out the video buffer area and BIOS areas. */ extent_alloc_region(pcimem_ex, IOM_BEGIN, IOM_SIZE, EX_CONFLICTOK | EX_NOWAIT); } if (pcibus_ex == NULL) { pcibus_ex = extent_create("pcibus", 0, 0xff, M_DEVBUF, NULL, 0, EX_NOWAIT); } } #include "acpi.h" #if NACPI > 0 void acpi_pci_match(struct device *, struct pci_attach_args *); pcireg_t acpi_pci_min_powerstate(pci_chipset_tag_t, pcitag_t); void acpi_pci_set_powerstate(pci_chipset_tag_t, pcitag_t, int, int); #endif void pci_dev_postattach(struct device *dev, struct pci_attach_args *pa) { #if NACPI > 0 acpi_pci_match(dev, pa); #endif } pcireg_t pci_min_powerstate(pci_chipset_tag_t pc, pcitag_t tag) { #if NACPI > 0 return acpi_pci_min_powerstate(pc, tag); #else return pci_get_powerstate(pc, tag); #endif } void pci_set_powerstate_md(pci_chipset_tag_t pc, pcitag_t tag, int state, int pre) { #if NACPI > 0 acpi_pci_set_powerstate(pc, tag, state, pre); #endif }