Date: Thu, 15 Feb 2024 20:28:42 GMT From: John Baldwin <jhb@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: d714e73f7895 - main - vmd: Use bus_generic_rman_* for PCI bus and memory resources Message-ID: <202402152028.41FKSgbQ053287@gitrepo.freebsd.org>
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The branch main has been updated by jhb: URL: https://cgit.FreeBSD.org/src/commit/?id=d714e73f789515963a22fe64417bf3883cdb599c commit d714e73f789515963a22fe64417bf3883cdb599c Author: John Baldwin <jhb@FreeBSD.org> AuthorDate: 2024-02-15 20:26:40 +0000 Commit: John Baldwin <jhb@FreeBSD.org> CommitDate: 2024-02-15 20:26:40 +0000 vmd: Use bus_generic_rman_* for PCI bus and memory resources While here, add custom bus_map/unmap_resource methods to request mappings via the window memory resources allocated from the parent bus. Tested by: emaste Differential Revision: https://reviews.freebsd.org/D43886 --- sys/dev/vmd/vmd.c | 133 ++++++++++++++++++++++++++++++++++++++++++++---------- 1 file changed, 108 insertions(+), 25 deletions(-) diff --git a/sys/dev/vmd/vmd.c b/sys/dev/vmd/vmd.c index d9afe5746421..d885cd15ac26 100644 --- a/sys/dev/vmd/vmd.c +++ b/sys/dev/vmd/vmd.c @@ -418,47 +418,53 @@ vmd_get_dma_tag(device_t dev, device_t child) return (sc->vmd_dma_tag); } +static struct rman * +vmd_get_rman(device_t dev, int type, u_int flags) +{ + struct vmd_softc *sc = device_get_softc(dev); + + switch (type) { + case SYS_RES_MEMORY: + return (&sc->psc.mem.rman); + case PCI_RES_BUS: + return (&sc->psc.bus.rman); + default: + /* VMD hardware does not support I/O ports. */ + return (NULL); + } +} + static struct resource * vmd_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 vmd_softc *sc = device_get_softc(dev); struct resource *res; - switch (type) { - case SYS_RES_IRQ: + if (type == SYS_RES_IRQ) { /* VMD hardware does not support legacy interrupts. */ if (*rid == 0) return (NULL); return (bus_generic_alloc_resource(dev, child, type, rid, start, end, count, flags | RF_SHAREABLE)); - case SYS_RES_MEMORY: - res = rman_reserve_resource(&sc->psc.mem.rman, start, end, - count, flags, child); - if (res == NULL) - return (NULL); - if (bootverbose) + } + res = bus_generic_rman_alloc_resource(dev, child, type, rid, start, + end, count, flags); + if (bootverbose && res != NULL) { + switch (type) { + case SYS_RES_MEMORY: device_printf(dev, "allocated memory range (%#jx-%#jx) for rid %d of %s\n", rman_get_start(res), rman_get_end(res), *rid, pcib_child_name(child)); - break; - case PCI_RES_BUS: - res = rman_reserve_resource(&sc->psc.bus.rman, start, end, - count, flags, child); - if (res == NULL) - return (NULL); - if (bootverbose) + break; + case PCI_RES_BUS: device_printf(dev, "allocated bus range (%ju-%ju) for rid %d of %s\n", rman_get_start(res), rman_get_end(res), *rid, pcib_child_name(child)); - break; - default: - /* VMD hardware does not support I/O ports. */ - return (NULL); + break; + } } - rman_set_rid(res, *rid); return (res); } @@ -471,7 +477,8 @@ vmd_adjust_resource(device_t dev, device_t child, int type, return (bus_generic_adjust_resource(dev, child, type, r, start, end)); } - return (rman_adjust_resource(r, start, end)); + return (bus_generic_rman_adjust_resource(dev, child, type, r, start, + end)); } static int @@ -483,7 +490,80 @@ vmd_release_resource(device_t dev, device_t child, int type, int rid, return (bus_generic_release_resource(dev, child, type, rid, r)); } - return (rman_release_resource(r)); + return (bus_generic_rman_release_resource(dev, child, type, rid, r)); +} + +static int +vmd_activate_resource(device_t dev, device_t child, int type, int rid, + struct resource *r) +{ + if (type == SYS_RES_IRQ) { + return (bus_generic_activate_resource(dev, child, type, rid, + r)); + } + return (bus_generic_rman_activate_resource(dev, child, type, rid, r)); +} + +static int +vmd_deactivate_resource(device_t dev, device_t child, int type, int rid, + struct resource *r) +{ + if (type == SYS_RES_IRQ) { + return (bus_generic_deactivate_resource(dev, child, type, rid, + r)); + } + return (bus_generic_rman_deactivate_resource(dev, child, type, rid, r)); +} + +static struct resource * +vmd_find_parent_resource(struct vmd_softc *sc, struct resource *r) +{ + for (int i = 1; i < 3; i++) { + if (rman_get_start(sc->vmd_regs_res[i]) <= rman_get_start(r) && + rman_get_end(sc->vmd_regs_res[i]) >= rman_get_end(r)) + return (sc->vmd_regs_res[i]); + } + return (NULL); +} + +static int +vmd_map_resource(device_t dev, device_t child, int type, struct resource *r, + struct resource_map_request *argsp, struct resource_map *map) +{ + struct vmd_softc *sc = device_get_softc(dev); + struct resource_map_request args; + struct resource *pres; + rman_res_t length, start; + int error; + + /* Resources must be active to be mapped. */ + if (!(rman_get_flags(r) & RF_ACTIVE)) + return (ENXIO); + + resource_init_map_request(&args); + error = resource_validate_map_request(r, argsp, &args, &start, &length); + if (error) + return (error); + + pres = vmd_find_parent_resource(sc, r); + if (pres == NULL) + return (ENOENT); + + args.offset = start - rman_get_start(pres); + args.length = length; + return (bus_generic_map_resource(dev, child, type, pres, &args, map)); +} + +static int +vmd_unmap_resource(device_t dev, device_t child, int type, struct resource *r, + struct resource_map *map) +{ + struct vmd_softc *sc = device_get_softc(dev); + + r = vmd_find_parent_resource(sc, r); + if (r == NULL) + return (ENOENT); + return (bus_generic_unmap_resource(dev, child, type, r, map)); } static int @@ -647,13 +727,16 @@ static device_method_t vmd_pci_methods[] = { /* Bus interface */ DEVMETHOD(bus_get_dma_tag, vmd_get_dma_tag), + DEVMETHOD(bus_get_rman, vmd_get_rman), DEVMETHOD(bus_read_ivar, pcib_read_ivar), DEVMETHOD(bus_write_ivar, pcib_write_ivar), DEVMETHOD(bus_alloc_resource, vmd_alloc_resource), DEVMETHOD(bus_adjust_resource, vmd_adjust_resource), DEVMETHOD(bus_release_resource, vmd_release_resource), - DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), - DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), + DEVMETHOD(bus_activate_resource, vmd_activate_resource), + DEVMETHOD(bus_deactivate_resource, vmd_deactivate_resource), + DEVMETHOD(bus_map_resource, vmd_map_resource), + DEVMETHOD(bus_unmap_resource, vmd_unmap_resource), DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
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