| busdma_dmar.c (279117) | busdma_dmar.c (280260) |
|---|---|
| 1/*- 2 * Copyright (c) 2013 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Konstantin Belousov <kib@FreeBSD.org> 6 * under sponsorship from the FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 14 unchanged lines hidden (view full) --- 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2013 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Konstantin Belousov <kib@FreeBSD.org> 6 * under sponsorship from the FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 14 unchanged lines hidden (view full) --- 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#include <sys/cdefs.h> |
| 31__FBSDID("$FreeBSD: head/sys/x86/iommu/busdma_dmar.c 279117 2015-02-21 22:38:32Z kib $"); | 31__FBSDID("$FreeBSD: head/sys/x86/iommu/busdma_dmar.c 280260 2015-03-19 13:57:47Z kib $"); |
| 32 33#include <sys/param.h> 34#include <sys/systm.h> 35#include <sys/malloc.h> 36#include <sys/bus.h> 37#include <sys/conf.h> 38#include <sys/interrupt.h> 39#include <sys/kernel.h> 40#include <sys/ktr.h> 41#include <sys/lock.h> 42#include <sys/proc.h> 43#include <sys/memdesc.h> 44#include <sys/mutex.h> 45#include <sys/sysctl.h> 46#include <sys/rman.h> 47#include <sys/taskqueue.h> 48#include <sys/tree.h> 49#include <sys/uio.h> | 32 33#include <sys/param.h> 34#include <sys/systm.h> 35#include <sys/malloc.h> 36#include <sys/bus.h> 37#include <sys/conf.h> 38#include <sys/interrupt.h> 39#include <sys/kernel.h> 40#include <sys/ktr.h> 41#include <sys/lock.h> 42#include <sys/proc.h> 43#include <sys/memdesc.h> 44#include <sys/mutex.h> 45#include <sys/sysctl.h> 46#include <sys/rman.h> 47#include <sys/taskqueue.h> 48#include <sys/tree.h> 49#include <sys/uio.h> |
| 50#include <sys/vmem.h> |
|
| 50#include <dev/pci/pcireg.h> 51#include <dev/pci/pcivar.h> 52#include <vm/vm.h> 53#include <vm/vm_extern.h> 54#include <vm/vm_kern.h> 55#include <vm/vm_object.h> 56#include <vm/vm_page.h> 57#include <vm/vm_map.h> --- 29 unchanged lines hidden (view full) --- 87 * Given original device, find the requester ID that will be seen by 88 * the DMAR unit and used for page table lookup. PCI bridges may take 89 * ownership of transactions from downstream devices, so it may not be 90 * the same as the BSF of the target device. In those cases, all 91 * devices downstream of the bridge must share a single mapping 92 * domain, and must collectively be assigned to use either DMAR or 93 * bounce mapping. 94 */ | 51#include <dev/pci/pcireg.h> 52#include <dev/pci/pcivar.h> 53#include <vm/vm.h> 54#include <vm/vm_extern.h> 55#include <vm/vm_kern.h> 56#include <vm/vm_object.h> 57#include <vm/vm_page.h> 58#include <vm/vm_map.h> --- 29 unchanged lines hidden (view full) --- 88 * Given original device, find the requester ID that will be seen by 89 * the DMAR unit and used for page table lookup. PCI bridges may take 90 * ownership of transactions from downstream devices, so it may not be 91 * the same as the BSF of the target device. In those cases, all 92 * devices downstream of the bridge must share a single mapping 93 * domain, and must collectively be assigned to use either DMAR or 94 * bounce mapping. 95 */ |
| 95static device_t | 96device_t |
| 96dmar_get_requester(device_t dev, uint16_t *rid) 97{ 98 devclass_t pci_class; 99 device_t l, pci, pcib, pcip, pcibp, requester; 100 int cap_offset; 101 uint16_t pcie_flags; 102 bool bridge_is_pcie; 103 --- 146 unchanged lines hidden (view full) --- 250 struct dmar_unit *dmar; 251 struct dmar_ctx *ctx; 252 bus_dma_tag_t res; 253 254 dmar = dmar_find(child); 255 /* Not in scope of any DMAR ? */ 256 if (dmar == NULL) 257 return (NULL); | 97dmar_get_requester(device_t dev, uint16_t *rid) 98{ 99 devclass_t pci_class; 100 device_t l, pci, pcib, pcip, pcibp, requester; 101 int cap_offset; 102 uint16_t pcie_flags; 103 bool bridge_is_pcie; 104 --- 146 unchanged lines hidden (view full) --- 251 struct dmar_unit *dmar; 252 struct dmar_ctx *ctx; 253 bus_dma_tag_t res; 254 255 dmar = dmar_find(child); 256 /* Not in scope of any DMAR ? */ 257 if (dmar == NULL) 258 return (NULL); |
| 259 if (!dmar->dma_enabled) 260 return (NULL); |
|
| 258 dmar_quirks_pre_use(dmar); 259 dmar_instantiate_rmrr_ctxs(dmar); 260 261 ctx = dmar_instantiate_ctx(dmar, child, false); 262 res = ctx == NULL ? NULL : (bus_dma_tag_t)&ctx->ctx_tag; 263 return (res); 264} 265 --- 581 unchanged lines hidden (view full) --- 847 DMAR_UNLOCK(unit); 848 taskqueue_enqueue(unit->delayed_taskqueue, &unit->dmamap_load_task); 849} 850 851int 852dmar_init_busdma(struct dmar_unit *unit) 853{ 854 | 261 dmar_quirks_pre_use(dmar); 262 dmar_instantiate_rmrr_ctxs(dmar); 263 264 ctx = dmar_instantiate_ctx(dmar, child, false); 265 res = ctx == NULL ? NULL : (bus_dma_tag_t)&ctx->ctx_tag; 266 return (res); 267} 268 --- 581 unchanged lines hidden (view full) --- 850 DMAR_UNLOCK(unit); 851 taskqueue_enqueue(unit->delayed_taskqueue, &unit->dmamap_load_task); 852} 853 854int 855dmar_init_busdma(struct dmar_unit *unit) 856{ 857 |
| 858 unit->dma_enabled = 1; 859 TUNABLE_INT_FETCH("hw.dmar.dma", &unit->dma_enabled); |
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| 855 TAILQ_INIT(&unit->delayed_maps); 856 TASK_INIT(&unit->dmamap_load_task, 0, dmar_bus_task_dmamap, unit); 857 unit->delayed_taskqueue = taskqueue_create("dmar", M_WAITOK, 858 taskqueue_thread_enqueue, &unit->delayed_taskqueue); 859 taskqueue_start_threads(&unit->delayed_taskqueue, 1, PI_DISK, 860 "dmar%d busdma taskq", unit->unit); 861 return (0); 862} --- 12 unchanged lines hidden --- | 860 TAILQ_INIT(&unit->delayed_maps); 861 TASK_INIT(&unit->dmamap_load_task, 0, dmar_bus_task_dmamap, unit); 862 unit->delayed_taskqueue = taskqueue_create("dmar", M_WAITOK, 863 taskqueue_thread_enqueue, &unit->delayed_taskqueue); 864 taskqueue_start_threads(&unit->delayed_taskqueue, 1, PI_DISK, 865 "dmar%d busdma taskq", unit->unit); 866 return (0); 867} --- 12 unchanged lines hidden --- |