Index: head/sys/dev/pci/pci_host_generic.c =================================================================== --- head/sys/dev/pci/pci_host_generic.c (revision 351866) +++ head/sys/dev/pci/pci_host_generic.c (revision 351867) @@ -1,472 +1,472 @@ /*- * Copyright (c) 2015 Ruslan Bukin * Copyright (c) 2014 The FreeBSD Foundation * All rights reserved. * * This software was developed by Semihalf under * the sponsorship of the FreeBSD Foundation. * * 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 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 AUTHOR 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. */ /* Generic ECAM PCIe driver */ #include __FBSDID("$FreeBSD$"); #include "opt_platform.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "pcib_if.h" /* Assembling ECAM Configuration Address */ #define PCIE_BUS_SHIFT 20 #define PCIE_SLOT_SHIFT 15 #define PCIE_FUNC_SHIFT 12 #define PCIE_BUS_MASK 0xFF #define PCIE_SLOT_MASK 0x1F #define PCIE_FUNC_MASK 0x07 #define PCIE_REG_MASK 0xFFF #define PCIE_ADDR_OFFSET(bus, slot, func, reg) \ ((((bus) & PCIE_BUS_MASK) << PCIE_BUS_SHIFT) | \ (((slot) & PCIE_SLOT_MASK) << PCIE_SLOT_SHIFT) | \ (((func) & PCIE_FUNC_MASK) << PCIE_FUNC_SHIFT) | \ ((reg) & PCIE_REG_MASK)) /* Forward prototypes */ static uint32_t generic_pcie_read_config(device_t dev, u_int bus, u_int slot, u_int func, u_int reg, int bytes); static void generic_pcie_write_config(device_t dev, u_int bus, u_int slot, u_int func, u_int reg, uint32_t val, int bytes); static int generic_pcie_maxslots(device_t dev); static int generic_pcie_read_ivar(device_t dev, device_t child, int index, uintptr_t *result); static int generic_pcie_write_ivar(device_t dev, device_t child, int index, uintptr_t value); int pci_host_generic_core_attach(device_t dev) { struct generic_pcie_core_softc *sc; int error; int rid; sc = device_get_softc(dev); sc->dev = dev; /* Create the parent DMA tag to pass down the coherent flag */ error = bus_dma_tag_create(bus_get_dma_tag(dev), /* parent */ 1, 0, /* alignment, bounds */ BUS_SPACE_MAXADDR, /* lowaddr */ BUS_SPACE_MAXADDR, /* highaddr */ NULL, NULL, /* filter, filterarg */ BUS_SPACE_MAXSIZE, /* maxsize */ BUS_SPACE_UNRESTRICTED, /* nsegments */ BUS_SPACE_MAXSIZE, /* maxsegsize */ sc->coherent ? BUS_DMA_COHERENT : 0, /* flags */ NULL, NULL, /* lockfunc, lockarg */ &sc->dmat); if (error != 0) return (error); rid = 0; sc->res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); if (sc->res == NULL) { device_printf(dev, "could not map memory.\n"); return (ENXIO); } sc->bst = rman_get_bustag(sc->res); sc->bsh = rman_get_bushandle(sc->res); sc->mem_rman.rm_type = RMAN_ARRAY; sc->mem_rman.rm_descr = "PCIe Memory"; sc->io_rman.rm_type = RMAN_ARRAY; sc->io_rman.rm_descr = "PCIe IO window"; /* Initialize rman and allocate memory regions */ error = rman_init(&sc->mem_rman); if (error) { device_printf(dev, "rman_init() failed. error = %d\n", error); return (error); } error = rman_init(&sc->io_rman); if (error) { device_printf(dev, "rman_init() failed. error = %d\n", error); return (error); } return (0); } static uint32_t generic_pcie_read_config(device_t dev, u_int bus, u_int slot, u_int func, u_int reg, int bytes) { struct generic_pcie_core_softc *sc; bus_space_handle_t h; bus_space_tag_t t; uint64_t offset; uint32_t data; sc = device_get_softc(dev); if ((bus < sc->bus_start) || (bus > sc->bus_end)) return (~0U); if ((slot > PCI_SLOTMAX) || (func > PCI_FUNCMAX) || (reg > PCIE_REGMAX)) return (~0U); offset = PCIE_ADDR_OFFSET(bus - sc->bus_start, slot, func, reg); t = sc->bst; h = sc->bsh; switch (bytes) { case 1: data = bus_space_read_1(t, h, offset); break; case 2: data = le16toh(bus_space_read_2(t, h, offset)); break; case 4: data = le32toh(bus_space_read_4(t, h, offset)); break; default: return (~0U); } return (data); } static void generic_pcie_write_config(device_t dev, u_int bus, u_int slot, u_int func, u_int reg, uint32_t val, int bytes) { struct generic_pcie_core_softc *sc; bus_space_handle_t h; bus_space_tag_t t; uint64_t offset; sc = device_get_softc(dev); if ((bus < sc->bus_start) || (bus > sc->bus_end)) return; if ((slot > PCI_SLOTMAX) || (func > PCI_FUNCMAX) || (reg > PCIE_REGMAX)) return; offset = PCIE_ADDR_OFFSET(bus - sc->bus_start, slot, func, reg); t = sc->bst; h = sc->bsh; switch (bytes) { case 1: bus_space_write_1(t, h, offset, val); break; case 2: bus_space_write_2(t, h, offset, htole16(val)); break; case 4: bus_space_write_4(t, h, offset, htole32(val)); break; default: return; } } static int generic_pcie_maxslots(device_t dev) { return (31); /* max slots per bus acc. to standard */ } static int generic_pcie_read_ivar(device_t dev, device_t child, int index, uintptr_t *result) { struct generic_pcie_core_softc *sc; sc = device_get_softc(dev); if (index == PCIB_IVAR_BUS) { *result = sc->bus_start; return (0); } if (index == PCIB_IVAR_DOMAIN) { *result = sc->ecam; return (0); } if (bootverbose) device_printf(dev, "ERROR: Unknown index %d.\n", index); return (ENOENT); } static int generic_pcie_write_ivar(device_t dev, device_t child, int index, uintptr_t value) { return (ENOENT); } static struct rman * generic_pcie_rman(struct generic_pcie_core_softc *sc, int type) { switch (type) { case SYS_RES_IOPORT: return (&sc->io_rman); case SYS_RES_MEMORY: return (&sc->mem_rman); default: break; } return (NULL); } int pci_host_generic_core_release_resource(device_t dev, device_t child, int type, int rid, struct resource *res) { struct generic_pcie_core_softc *sc; struct rman *rm; sc = device_get_softc(dev); #if defined(NEW_PCIB) && defined(PCI_RES_BUS) if (type == PCI_RES_BUS) { return (pci_domain_release_bus(sc->ecam, child, rid, res)); } #endif rm = generic_pcie_rman(sc, type); if (rm != NULL) { KASSERT(rman_is_region_manager(res, rm), ("rman mismatch")); rman_release_resource(res); } return (bus_generic_release_resource(dev, child, type, rid, res)); } struct resource * pci_host_generic_core_alloc_resource(device_t dev, device_t child, int type, int *rid, rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) { struct generic_pcie_core_softc *sc; struct resource *res; struct rman *rm; sc = device_get_softc(dev); #if defined(NEW_PCIB) && defined(PCI_RES_BUS) if (type == PCI_RES_BUS) { return (pci_domain_alloc_bus(sc->ecam, child, rid, start, end, count, flags)); } #endif rm = generic_pcie_rman(sc, type); if (rm == NULL) return (BUS_ALLOC_RESOURCE(device_get_parent(dev), child, type, rid, start, end, count, flags)); if (bootverbose) { device_printf(dev, "rman_reserve_resource: start=%#jx, end=%#jx, count=%#jx\n", start, end, count); } res = rman_reserve_resource(rm, start, end, count, flags, child); if (res == NULL) goto fail; rman_set_rid(res, *rid); if (flags & RF_ACTIVE) if (bus_activate_resource(child, type, *rid, res)) { rman_release_resource(res); goto fail; } return (res); fail: device_printf(dev, "%s FAIL: type=%d, rid=%d, " "start=%016jx, end=%016jx, count=%016jx, flags=%x\n", __func__, type, *rid, start, end, count, flags); return (NULL); } static int generic_pcie_activate_resource(device_t dev, device_t child, int type, int rid, struct resource *r) { struct generic_pcie_core_softc *sc; uint64_t phys_base; uint64_t pci_base; uint64_t size; int found; int res; int i; sc = device_get_softc(dev); if ((res = rman_activate_resource(r)) != 0) return (res); switch (type) { case SYS_RES_IOPORT: case SYS_RES_MEMORY: found = 0; for (i = 0; i < MAX_RANGES_TUPLES; i++) { pci_base = sc->ranges[i].pci_base; phys_base = sc->ranges[i].phys_base; size = sc->ranges[i].size; if ((rman_get_start(r) >= pci_base) && (rman_get_start(r) < (pci_base + size))) { found = 1; break; } } if (found) { rman_set_start(r, rman_get_start(r) - pci_base + phys_base); rman_set_end(r, rman_get_end(r) - pci_base + phys_base); res = BUS_ACTIVATE_RESOURCE(device_get_parent(dev), child, type, rid, r); } else { device_printf(dev, "Failed to activate %s resource\n", type == SYS_RES_IOPORT ? "IOPORT" : "MEMORY"); - res = 0; + res = ENXIO; } break; case SYS_RES_IRQ: res = BUS_ACTIVATE_RESOURCE(device_get_parent(dev), child, type, rid, r); break; default: break; } return (res); } static int generic_pcie_deactivate_resource(device_t dev, device_t child, int type, int rid, struct resource *r) { int res; if ((res = rman_deactivate_resource(r)) != 0) return (res); switch (type) { case SYS_RES_IOPORT: case SYS_RES_MEMORY: case SYS_RES_IRQ: res = BUS_DEACTIVATE_RESOURCE(device_get_parent(dev), child, type, rid, r); break; default: break; } return (res); } static int generic_pcie_adjust_resource(device_t dev, device_t child, int type, struct resource *res, rman_res_t start, rman_res_t end) { struct generic_pcie_core_softc *sc; struct rman *rm; sc = device_get_softc(dev); #if defined(NEW_PCIB) && defined(PCI_RES_BUS) if (type == PCI_RES_BUS) return (pci_domain_adjust_bus(sc->ecam, child, res, start, end)); #endif rm = generic_pcie_rman(sc, type); if (rm != NULL) return (rman_adjust_resource(res, start, end)); return (bus_generic_adjust_resource(dev, child, type, res, start, end)); } static bus_dma_tag_t generic_pcie_get_dma_tag(device_t dev, device_t child) { struct generic_pcie_core_softc *sc; sc = device_get_softc(dev); return (sc->dmat); } static device_method_t generic_pcie_methods[] = { DEVMETHOD(device_attach, pci_host_generic_core_attach), DEVMETHOD(bus_read_ivar, generic_pcie_read_ivar), DEVMETHOD(bus_write_ivar, generic_pcie_write_ivar), DEVMETHOD(bus_alloc_resource, pci_host_generic_core_alloc_resource), DEVMETHOD(bus_adjust_resource, generic_pcie_adjust_resource), DEVMETHOD(bus_activate_resource, generic_pcie_activate_resource), DEVMETHOD(bus_deactivate_resource, generic_pcie_deactivate_resource), DEVMETHOD(bus_release_resource, pci_host_generic_core_release_resource), DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), DEVMETHOD(bus_get_dma_tag, generic_pcie_get_dma_tag), /* pcib interface */ DEVMETHOD(pcib_maxslots, generic_pcie_maxslots), DEVMETHOD(pcib_read_config, generic_pcie_read_config), DEVMETHOD(pcib_write_config, generic_pcie_write_config), DEVMETHOD_END }; DEFINE_CLASS_0(pcib, generic_pcie_core_driver, generic_pcie_methods, sizeof(struct generic_pcie_core_softc));