diff options
Diffstat (limited to 'sys/dev/proto')
| -rw-r--r-- | sys/dev/proto/proto.h | 6 | ||||
| -rw-r--r-- | sys/dev/proto/proto_bus_pci.c | 1 | ||||
| -rw-r--r-- | sys/dev/proto/proto_busdma.c | 283 | ||||
| -rw-r--r-- | sys/dev/proto/proto_busdma.h | 75 | ||||
| -rw-r--r-- | sys/dev/proto/proto_core.c | 96 | ||||
| -rw-r--r-- | sys/dev/proto/proto_dev.h | 33 |
6 files changed, 467 insertions, 27 deletions
diff --git a/sys/dev/proto/proto.h b/sys/dev/proto/proto.h index db61da5..690d71f 100644 --- a/sys/dev/proto/proto.h +++ b/sys/dev/proto/proto.h @@ -33,11 +33,15 @@ #define PROTO_RES_UNUSED 0 #define PROTO_RES_PCICFG 10 +#define PROTO_RES_BUSDMA 11 struct proto_res { int r_type; int r_rid; - struct resource *r_res; + union { + struct resource *res; + void *busdma; + } r_d; u_long r_size; union { void *cookie; diff --git a/sys/dev/proto/proto_bus_pci.c b/sys/dev/proto/proto_bus_pci.c index 012469a..46ec41e 100644 --- a/sys/dev/proto/proto_bus_pci.c +++ b/sys/dev/proto/proto_bus_pci.c @@ -87,6 +87,7 @@ proto_pci_attach(device_t dev) sc = device_get_softc(dev); proto_add_resource(sc, PROTO_RES_PCICFG, 0, NULL); + proto_add_resource(sc, PROTO_RES_BUSDMA, 0, NULL); for (bar = 0; bar < PCIR_MAX_BAR_0; bar++) { rid = PCIR_BAR(bar); diff --git a/sys/dev/proto/proto_busdma.c b/sys/dev/proto/proto_busdma.c new file mode 100644 index 0000000..ced4eed --- /dev/null +++ b/sys/dev/proto/proto_busdma.c @@ -0,0 +1,283 @@ +/*- + * Copyright (c) 2015 Marcel Moolenaar + * 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. + * + * 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 <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <machine/bus.h> +#include <machine/bus_dma.h> +#include <machine/resource.h> +#include <sys/bus.h> +#include <sys/conf.h> +#include <sys/kernel.h> +#include <sys/malloc.h> +#include <sys/module.h> +#include <sys/queue.h> +#include <sys/rman.h> +#include <sys/sbuf.h> +#include <vm/vm.h> +#include <vm/pmap.h> + +#include <dev/proto/proto.h> +#include <dev/proto/proto_dev.h> +#include <dev/proto/proto_busdma.h> + +MALLOC_DEFINE(M_PROTO_BUSDMA, "proto_busdma", "DMA management data"); + +static int +proto_busdma_tag_create(struct proto_busdma *busdma, struct proto_tag *parent, + struct proto_ioc_busdma *ioc) +{ + struct proto_tag *tag; + + /* + * If nsegs is 1, ignore maxsegsz. What this means is that if we have + * just 1 segment, then maxsz should be equal to maxsegsz. To keep it + * simple for us, limit maxsegsz to maxsz in any case. + */ + if (ioc->u.tag.maxsegsz > ioc->u.tag.maxsz || ioc->u.tag.nsegs == 1) + ioc->u.tag.maxsegsz = ioc->u.tag.maxsz; + + /* A bndry of 0 really means ~0, or no boundary. */ + if (ioc->u.tag.bndry == 0) + ioc->u.tag.bndry = ~0U; + + tag = malloc(sizeof(*tag), M_PROTO_BUSDMA, M_WAITOK | M_ZERO); + if (parent != NULL) { + tag->parent = parent; + LIST_INSERT_HEAD(&parent->children, tag, peers); + tag->align = MAX(ioc->u.tag.align, parent->align); + tag->bndry = MIN(ioc->u.tag.bndry, parent->bndry); + tag->maxaddr = MIN(ioc->u.tag.maxaddr, parent->maxaddr); + tag->maxsz = MIN(ioc->u.tag.maxsz, parent->maxsz); + tag->maxsegsz = MIN(ioc->u.tag.maxsegsz, parent->maxsegsz); + tag->nsegs = MIN(ioc->u.tag.nsegs, parent->nsegs); + tag->datarate = MIN(ioc->u.tag.datarate, parent->datarate); + /* Write constraints back */ + ioc->u.tag.align = tag->align; + ioc->u.tag.bndry = tag->bndry; + ioc->u.tag.maxaddr = tag->maxaddr; + ioc->u.tag.maxsz = tag->maxsz; + ioc->u.tag.maxsegsz = tag->maxsegsz; + ioc->u.tag.nsegs = tag->nsegs; + ioc->u.tag.datarate = tag->datarate; + } else { + tag->align = ioc->u.tag.align; + tag->bndry = ioc->u.tag.bndry; + tag->maxaddr = ioc->u.tag.maxaddr; + tag->maxsz = ioc->u.tag.maxsz; + tag->maxsegsz = ioc->u.tag.maxsegsz; + tag->nsegs = ioc->u.tag.nsegs; + tag->datarate = ioc->u.tag.datarate; + } + LIST_INSERT_HEAD(&busdma->tags, tag, tags); + ioc->result = (uintptr_t)(void *)tag; + return (0); +} + +static int +proto_busdma_tag_destroy(struct proto_busdma *busdma, struct proto_tag *tag) +{ + + if (!LIST_EMPTY(&tag->mds)) + return (EBUSY); + if (!LIST_EMPTY(&tag->children)) + return (EBUSY); + + if (tag->parent != NULL) { + LIST_REMOVE(tag, peers); + tag->parent = NULL; + } + LIST_REMOVE(tag, tags); + free(tag, M_PROTO_BUSDMA); + return (0); +} + +static struct proto_tag * +proto_busdma_tag_lookup(struct proto_busdma *busdma, u_long key) +{ + struct proto_tag *tag; + + LIST_FOREACH(tag, &busdma->tags, tags) { + if ((void *)tag == (void *)key) + return (tag); + } + return (NULL); +} + +static int +proto_busdma_mem_alloc(struct proto_busdma *busdma, struct proto_tag *tag, + struct proto_ioc_busdma *ioc) +{ + struct proto_md *md; + int error; + + md = malloc(sizeof(*md), M_PROTO_BUSDMA, M_WAITOK | M_ZERO); + md->tag = tag; + + error = bus_dma_tag_create(busdma->bd_roottag, tag->align, tag->bndry, + tag->maxaddr, BUS_SPACE_MAXADDR, NULL, NULL, tag->maxsz, + tag->nsegs, tag->maxsegsz, 0, NULL, NULL, &md->bd_tag); + if (error) { + free(md, M_PROTO_BUSDMA); + return (error); + } + error = bus_dmamem_alloc(md->bd_tag, &md->virtaddr, 0, &md->bd_map); + if (error) { + bus_dma_tag_destroy(md->bd_tag); + free(md, M_PROTO_BUSDMA); + return (error); + } + md->physaddr = pmap_kextract((uintptr_t)(md->virtaddr)); + LIST_INSERT_HEAD(&tag->mds, md, peers); + LIST_INSERT_HEAD(&busdma->mds, md, mds); + ioc->u.mem.nsegs = 1; + ioc->u.mem.physaddr = md->physaddr; + ioc->result = (uintptr_t)(void *)md; + return (0); +} + +static int +proto_busdma_mem_free(struct proto_busdma *busdma, struct proto_md *md) +{ + + LIST_REMOVE(md, mds); + LIST_REMOVE(md, peers); + bus_dmamem_free(md->bd_tag, md->virtaddr, md->bd_map); + bus_dma_tag_destroy(md->bd_tag); + free(md, M_PROTO_BUSDMA); + return (0); +} + +static struct proto_md * +proto_busdma_md_lookup(struct proto_busdma *busdma, u_long key) +{ + struct proto_md *md; + + LIST_FOREACH(md, &busdma->mds, mds) { + if ((void *)md == (void *)key) + return (md); + } + return (NULL); +} + +struct proto_busdma * +proto_busdma_attach(struct proto_softc *sc) +{ + struct proto_busdma *busdma; + + busdma = malloc(sizeof(*busdma), M_PROTO_BUSDMA, M_WAITOK | M_ZERO); + return (busdma); +} + +int +proto_busdma_detach(struct proto_softc *sc, struct proto_busdma *busdma) +{ + + proto_busdma_cleanup(sc, busdma); + free(busdma, M_PROTO_BUSDMA); + return (0); +} + +int +proto_busdma_cleanup(struct proto_softc *sc, struct proto_busdma *busdma) +{ + struct proto_md *md, *md1; + struct proto_tag *tag, *tag1; + + LIST_FOREACH_SAFE(md, &busdma->mds, mds, md1) + proto_busdma_mem_free(busdma, md); + LIST_FOREACH_SAFE(tag, &busdma->tags, tags, tag1) + proto_busdma_tag_destroy(busdma, tag); + return (0); +} + +int +proto_busdma_ioctl(struct proto_softc *sc, struct proto_busdma *busdma, + struct proto_ioc_busdma *ioc) +{ + struct proto_tag *tag; + struct proto_md *md; + int error; + + error = 0; + switch (ioc->request) { + case PROTO_IOC_BUSDMA_TAG_CREATE: + busdma->bd_roottag = bus_get_dma_tag(sc->sc_dev); + error = proto_busdma_tag_create(busdma, NULL, ioc); + break; + case PROTO_IOC_BUSDMA_TAG_DERIVE: + tag = proto_busdma_tag_lookup(busdma, ioc->key); + if (tag == NULL) { + error = EINVAL; + break; + } + error = proto_busdma_tag_create(busdma, tag, ioc); + break; + case PROTO_IOC_BUSDMA_TAG_DESTROY: + tag = proto_busdma_tag_lookup(busdma, ioc->key); + if (tag == NULL) { + error = EINVAL; + break; + } + error = proto_busdma_tag_destroy(busdma, tag); + break; + case PROTO_IOC_BUSDMA_MEM_ALLOC: + tag = proto_busdma_tag_lookup(busdma, ioc->u.mem.tag); + if (tag == NULL) { + error = EINVAL; + break; + } + error = proto_busdma_mem_alloc(busdma, tag, ioc); + break; + case PROTO_IOC_BUSDMA_MEM_FREE: + md = proto_busdma_md_lookup(busdma, ioc->key); + if (md == NULL) { + error = EINVAL; + break; + } + error = proto_busdma_mem_free(busdma, md); + break; + default: + error = EINVAL; + break; + } + return (error); +} + +int +proto_busdma_mmap_allowed(struct proto_busdma *busdma, vm_paddr_t physaddr) +{ + struct proto_md *md; + + LIST_FOREACH(md, &busdma->mds, mds) { + if (physaddr >= trunc_page(md->physaddr) && + physaddr <= trunc_page(md->physaddr + md->tag->maxsz)) + return (1); + } + return (0); +} diff --git a/sys/dev/proto/proto_busdma.h b/sys/dev/proto/proto_busdma.h new file mode 100644 index 0000000..b4957f5 --- /dev/null +++ b/sys/dev/proto/proto_busdma.h @@ -0,0 +1,75 @@ +/*- + * Copyright (c) 2015 Marcel Moolenaar + * 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. + * + * 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. + * + * $FreeBSD$ + */ + +#ifndef _DEV_PROTO_BUSDMA_H_ +#define _DEV_PROTO_BUSDMA_H_ + +struct proto_md; + +struct proto_tag { + LIST_ENTRY(proto_tag) tags; + struct proto_tag *parent; + LIST_ENTRY(proto_tag) peers; + LIST_HEAD(,proto_tag) children; + LIST_HEAD(,proto_md) mds; + bus_addr_t align; + bus_addr_t bndry; + bus_addr_t maxaddr; + bus_size_t maxsz; + bus_size_t maxsegsz; + u_int nsegs; + u_int datarate; +}; + +struct proto_md { + LIST_ENTRY(proto_md) mds; + LIST_ENTRY(proto_md) peers; + struct proto_tag *tag; + void *virtaddr; + vm_paddr_t physaddr; + bus_dma_tag_t bd_tag; + bus_dmamap_t bd_map; +}; + +struct proto_busdma { + LIST_HEAD(,proto_tag) tags; + LIST_HEAD(,proto_md) mds; + bus_dma_tag_t bd_roottag; +}; + +struct proto_busdma *proto_busdma_attach(struct proto_softc *); +int proto_busdma_detach(struct proto_softc *, struct proto_busdma *); + +int proto_busdma_cleanup(struct proto_softc *, struct proto_busdma *); + +int proto_busdma_ioctl(struct proto_softc *, struct proto_busdma *, + struct proto_ioc_busdma *); + +int proto_busdma_mmap_allowed(struct proto_busdma *, vm_paddr_t); + +#endif /* _DEV_PROTO_BUSDMA_H_ */ diff --git a/sys/dev/proto/proto_core.c b/sys/dev/proto/proto_core.c index 5ea0a6c..86f08eb 100644 --- a/sys/dev/proto/proto_core.c +++ b/sys/dev/proto/proto_core.c @@ -51,6 +51,7 @@ __FBSDID("$FreeBSD$"); #include <dev/proto/proto.h> #include <dev/proto/proto_dev.h> +#include <dev/proto/proto_busdma.h> CTASSERT(SYS_RES_IRQ != PROTO_RES_UNUSED && SYS_RES_MEMORY != PROTO_RES_UNUSED && @@ -58,6 +59,9 @@ CTASSERT(SYS_RES_IRQ != PROTO_RES_UNUSED && CTASSERT(SYS_RES_IRQ != PROTO_RES_PCICFG && SYS_RES_MEMORY != PROTO_RES_PCICFG && SYS_RES_IOPORT != PROTO_RES_PCICFG); +CTASSERT(SYS_RES_IRQ != PROTO_RES_BUSDMA && + SYS_RES_MEMORY != PROTO_RES_BUSDMA && + SYS_RES_IOPORT != PROTO_RES_BUSDMA); devclass_t proto_devclass; char proto_driver_name[] = "proto"; @@ -97,7 +101,7 @@ proto_add_resource(struct proto_softc *sc, int type, int rid, r = sc->sc_res + sc->sc_rescnt++; r->r_type = type; r->r_rid = rid; - r->r_res = res; + r->r_d.res = res; return (0); } @@ -130,7 +134,7 @@ proto_attach(device_t dev) break; case SYS_RES_MEMORY: case SYS_RES_IOPORT: - r->r_size = rman_get_size(r->r_res); + r->r_size = rman_get_size(r->r_d.res); r->r_u.cdev = make_dev(&proto_devsw, res, 0, 0, 0666, "proto/%s/%02x.%s", device_get_desc(dev), r->r_rid, (r->r_type == SYS_RES_IOPORT) ? "io" : "mem"); @@ -144,6 +148,14 @@ proto_attach(device_t dev) r->r_u.cdev->si_drv1 = sc; r->r_u.cdev->si_drv2 = r; break; + case PROTO_RES_BUSDMA: + r->r_d.busdma = proto_busdma_attach(sc); + r->r_size = 0; /* no read(2) nor write(2) */ + r->r_u.cdev = make_dev(&proto_devsw, res, 0, 0, 0666, + "proto/%s/busdma", device_get_desc(dev)); + r->r_u.cdev->si_drv1 = sc; + r->r_u.cdev->si_drv2 = r; + break; } } return (0); @@ -158,7 +170,7 @@ proto_detach(device_t dev) sc = device_get_softc(dev); - /* Don't detach if we have open device filess. */ + /* Don't detach if we have open device files. */ for (res = 0; res < sc->sc_rescnt; res++) { r = sc->sc_res + res; if (r->r_opened) @@ -170,17 +182,22 @@ proto_detach(device_t dev) switch (r->r_type) { case SYS_RES_IRQ: /* XXX TODO */ + bus_release_resource(dev, r->r_type, r->r_rid, + r->r_d.res); break; case SYS_RES_MEMORY: case SYS_RES_IOPORT: + bus_release_resource(dev, r->r_type, r->r_rid, + r->r_d.res); + destroy_dev(r->r_u.cdev); + break; case PROTO_RES_PCICFG: destroy_dev(r->r_u.cdev); break; - } - if (r->r_res != NULL) { - bus_release_resource(dev, r->r_type, r->r_rid, - r->r_res); - r->r_res = NULL; + case PROTO_RES_BUSDMA: + proto_busdma_detach(sc, r->r_d.busdma); + destroy_dev(r->r_u.cdev); + break; } r->r_type = PROTO_RES_UNUSED; } @@ -207,10 +224,14 @@ static int proto_close(struct cdev *cdev, int fflag, int devtype, struct thread *td) { struct proto_res *r; + struct proto_softc *sc; + sc = cdev->si_drv1; r = cdev->si_drv2; if (!atomic_cmpset_acq_ptr(&r->r_opened, (uintptr_t)td->td_proc, 0UL)) return (ENXIO); + if (r->r_type == PROTO_RES_BUSDMA) + proto_busdma_cleanup(sc, r->r_d.busdma); return (0); } @@ -244,21 +265,21 @@ proto_read(struct cdev *cdev, struct uio *uio, int ioflag) switch (width) { case 1: buf.x1[0] = (r->r_type == PROTO_RES_PCICFG) ? - pci_read_config(dev, ofs, 1) : bus_read_1(r->r_res, ofs); + pci_read_config(dev, ofs, 1) : bus_read_1(r->r_d.res, ofs); break; case 2: buf.x2[0] = (r->r_type == PROTO_RES_PCICFG) ? - pci_read_config(dev, ofs, 2) : bus_read_2(r->r_res, ofs); + pci_read_config(dev, ofs, 2) : bus_read_2(r->r_d.res, ofs); break; case 4: buf.x4[0] = (r->r_type == PROTO_RES_PCICFG) ? - pci_read_config(dev, ofs, 4) : bus_read_4(r->r_res, ofs); + pci_read_config(dev, ofs, 4) : bus_read_4(r->r_d.res, ofs); break; #ifndef __i386__ case 8: if (r->r_type == PROTO_RES_PCICFG) return (EINVAL); - buf.x8[0] = bus_read_8(r->r_res, ofs); + buf.x8[0] = bus_read_8(r->r_d.res, ofs); break; #endif default: @@ -305,25 +326,25 @@ proto_write(struct cdev *cdev, struct uio *uio, int ioflag) if (r->r_type == PROTO_RES_PCICFG) pci_write_config(dev, ofs, buf.x1[0], 1); else - bus_write_1(r->r_res, ofs, buf.x1[0]); + bus_write_1(r->r_d.res, ofs, buf.x1[0]); break; case 2: if (r->r_type == PROTO_RES_PCICFG) pci_write_config(dev, ofs, buf.x2[0], 2); else - bus_write_2(r->r_res, ofs, buf.x2[0]); + bus_write_2(r->r_d.res, ofs, buf.x2[0]); break; case 4: if (r->r_type == PROTO_RES_PCICFG) pci_write_config(dev, ofs, buf.x4[0], 4); else - bus_write_4(r->r_res, ofs, buf.x4[0]); + bus_write_4(r->r_d.res, ofs, buf.x4[0]); break; #ifndef __i386__ case 8: if (r->r_type == PROTO_RES_PCICFG) return (EINVAL); - bus_write_8(r->r_res, ofs, buf.x8[0]); + bus_write_8(r->r_d.res, ofs, buf.x8[0]); break; #endif default: @@ -338,20 +359,35 @@ proto_ioctl(struct cdev *cdev, u_long cmd, caddr_t data, int fflag, struct thread *td) { struct proto_ioc_region *region; + struct proto_ioc_busdma *busdma; struct proto_res *r; + struct proto_softc *sc; int error; + sc = cdev->si_drv1; r = cdev->si_drv2; error = 0; switch (cmd) { case PROTO_IOC_REGION: + if (r->r_type == PROTO_RES_BUSDMA) { + error = EINVAL; + break; + } region = (struct proto_ioc_region *)data; region->size = r->r_size; if (r->r_type == PROTO_RES_PCICFG) region->address = 0; else - region->address = rman_get_start(r->r_res); + region->address = rman_get_start(r->r_d.res); + break; + case PROTO_IOC_BUSDMA: + if (r->r_type != PROTO_RES_BUSDMA) { + error = EINVAL; + break; + } + busdma = (struct proto_ioc_busdma *)data; + error = proto_busdma_ioctl(sc, r->r_d.busdma, busdma); break; default: error = ENOIOCTL; @@ -366,19 +402,29 @@ proto_mmap(struct cdev *cdev, vm_ooffset_t offset, vm_paddr_t *paddr, { struct proto_res *r; - r = cdev->si_drv2; - - if (r->r_type != SYS_RES_MEMORY) - return (ENXIO); if (offset & PAGE_MASK) return (EINVAL); if (prot & PROT_EXEC) return (EACCES); - if (offset >= r->r_size) - return (EINVAL); - *paddr = rman_get_start(r->r_res) + offset; + + r = cdev->si_drv2; + + switch (r->r_type) { + case SYS_RES_MEMORY: + if (offset >= r->r_size) + return (EINVAL); + *paddr = rman_get_start(r->r_d.res) + offset; #ifndef __sparc64__ - *memattr = VM_MEMATTR_UNCACHEABLE; + *memattr = VM_MEMATTR_UNCACHEABLE; #endif + break; + case PROTO_RES_BUSDMA: + if (!proto_busdma_mmap_allowed(r->r_d.busdma, offset)) + return (EINVAL); + *paddr = offset; + break; + default: + return (ENXIO); + } return (0); } diff --git a/sys/dev/proto/proto_dev.h b/sys/dev/proto/proto_dev.h index 0ea3749..0050f0b 100644 --- a/sys/dev/proto/proto_dev.h +++ b/sys/dev/proto/proto_dev.h @@ -1,5 +1,5 @@ /*- - * Copyright (c) 2014 Marcel Moolenaar + * Copyright (c) 2014, 2015 Marcel Moolenaar * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -40,4 +40,35 @@ struct proto_ioc_region { #define PROTO_IOC_REGION _IOWR(PROTO_IOC_CLASS, 1, struct proto_ioc_region) +struct proto_ioc_busdma { + unsigned int request; +#define PROTO_IOC_BUSDMA_TAG_CREATE 1 +#define PROTO_IOC_BUSDMA_TAG_DERIVE 2 +#define PROTO_IOC_BUSDMA_TAG_DESTROY 3 +#define PROTO_IOC_BUSDMA_MEM_ALLOC 10 +#define PROTO_IOC_BUSDMA_MEM_FREE 11 + unsigned long key; + union { + struct { + unsigned long align; + unsigned long bndry; + unsigned long maxaddr; + unsigned long maxsz; + unsigned long maxsegsz; + unsigned int nsegs; + unsigned int datarate; + unsigned int flags; + } tag; + struct { + unsigned long tag; + unsigned int flags; + unsigned int nsegs; + unsigned long physaddr; + } mem; + } u; + unsigned long result; +}; + +#define PROTO_IOC_BUSDMA _IOWR(PROTO_IOC_CLASS, 2, struct proto_ioc_busdma) + #endif /* _DEV_PROTO_H_ */ |
