43 #include <vm/vm.h>
44 #include <vm/pmap.h>
45 #include <vm/vm_extern.h>
46 #include <vm/vm_param.h>
47 #include <vm/vm_kern.h>
48 #include <vm/vm_page.h>
49 #include <vm/vm_object.h>
50 #include <vm/vm_pager.h>
51 #include <vm/vm_pageout.h>
52 #include <vm/vm_phys.h>
108 hwt_vm_alloc_pages(struct hwt_vm *vm, int kva_req)  in hwt_vm_alloc_pages()  argument
129 		vm->kvaddr = kva_alloc(vm->npages * PAGE_SIZE);  in hwt_vm_alloc_pages()
130 		if (!vm->kvaddr)  in hwt_vm_alloc_pages()
134 	vm->obj = cdev_pager_allocate(vm, OBJT_MGTDEVICE,  in hwt_vm_alloc_pages()
135 	    &hwt_vm_pager_ops, vm->npages * PAGE_SIZE, PROT_READ, 0,  in hwt_vm_alloc_pages()
138 	for (i = 0; i < vm->npages; i++) {  in hwt_vm_alloc_pages()
169 		vm->pages[i] = m;  in hwt_vm_alloc_pages()
171 		VM_OBJECT_WLOCK(vm->obj);  in hwt_vm_alloc_pages()
172 		vm_page_insert(m, vm->obj, i);  in hwt_vm_alloc_pages()
174 			pmap_qenter(vm->kvaddr + i * PAGE_SIZE, &m, 1);  in hwt_vm_alloc_pages()
175 		VM_OBJECT_WUNLOCK(vm->obj);  in hwt_vm_alloc_pages()
194 	struct hwt_vm *vm;  in hwt_vm_mmap_single()  local
196 	vm = cdev->si_drv1;  in hwt_vm_mmap_single()
201 	vm_object_reference(vm->obj);  in hwt_vm_mmap_single()
202 	*objp = vm->obj;  in hwt_vm_mmap_single()
246 	struct hwt_vm *vm;  in hwt_vm_ioctl()  local
257 	vm = dev->si_drv1;  in hwt_vm_ioctl()
258 	KASSERT(vm != NULL, ("si_drv1 is NULL"));  in hwt_vm_ioctl()
260 	ctx = vm->ctx;  in hwt_vm_ioctl()
324 		KASSERT(vm->thr != NULL, ("thr is NULL"));  in hwt_vm_ioctl()
326 		wakeup(vm->thr);  in hwt_vm_ioctl()
333 		error = hwt_backend_read(ctx, vm, &ident, &offset, &data);  in hwt_vm_ioctl()
399 hwt_vm_create_cdev(struct hwt_vm *vm, char *path)  in hwt_vm_create_cdev()  argument
412 	args.mda_si_drv1 = vm;  in hwt_vm_create_cdev()
414 	error = make_dev_s(&args, &vm->cdev, "%s", path);  in hwt_vm_create_cdev()
422 hwt_vm_alloc_buffers(struct hwt_vm *vm, int kva_req)  in hwt_vm_alloc_buffers()  argument
426 	vm->pages = malloc(sizeof(struct vm_page *) * vm->npages,  in hwt_vm_alloc_buffers()
429 	error = hwt_vm_alloc_pages(vm, kva_req);  in hwt_vm_alloc_buffers()
439 hwt_vm_destroy_buffers(struct hwt_vm *vm)  in hwt_vm_destroy_buffers()  argument
444 	if (vm->ctx->hwt_backend->kva_req && vm->kvaddr != 0) {  in hwt_vm_destroy_buffers()
445 		pmap_qremove(vm->kvaddr, vm->npages);  in hwt_vm_destroy_buffers()
446 		kva_free(vm->kvaddr, vm->npages * PAGE_SIZE);  in hwt_vm_destroy_buffers()
448 	VM_OBJECT_WLOCK(vm->obj);  in hwt_vm_destroy_buffers()
449 	for (i = 0; i < vm->npages; i++) {  in hwt_vm_destroy_buffers()
450 		m = vm->pages[i];  in hwt_vm_destroy_buffers()
455 		cdev_pager_free_page(vm->obj, m);  in hwt_vm_destroy_buffers()
461 	vm_pager_deallocate(vm->obj);  in hwt_vm_destroy_buffers()
462 	VM_OBJECT_WUNLOCK(vm->obj);  in hwt_vm_destroy_buffers()
464 	free(vm->pages, M_HWT_VM);  in hwt_vm_destroy_buffers()
468 hwt_vm_free(struct hwt_vm *vm)  in hwt_vm_free()  argument
473 	if (vm->cdev)  in hwt_vm_free()
474 		destroy_dev_sched(vm->cdev);  in hwt_vm_free()
475 	hwt_vm_destroy_buffers(vm);  in hwt_vm_free()
476 	free(vm, M_HWT_VM);  in hwt_vm_free()
482 	struct hwt_vm *vm;  in hwt_vm_alloc()  local
485 	vm = malloc(sizeof(struct hwt_vm), M_HWT_VM, M_WAITOK | M_ZERO);  in hwt_vm_alloc()
486 	vm->npages = bufsize / PAGE_SIZE;  in hwt_vm_alloc()
488 	error = hwt_vm_alloc_buffers(vm, kva_req);  in hwt_vm_alloc()
490 		free(vm, M_HWT_VM);  in hwt_vm_alloc()
494 	error = hwt_vm_create_cdev(vm, path);  in hwt_vm_alloc()
496 		hwt_vm_free(vm);  in hwt_vm_alloc()
500 	*vm0 = vm;  in hwt_vm_alloc()