C++ (Cpp) uvm_km_valloc_align Examples

Example #1

File: xbd.c Project: MarginC/kame

static void
init_interface(void)
{
	block_io_op_t op; 

	reset_interface();

	if (blk_ring == NULL) {
		op.cmd = BLOCK_IO_OP_RING_ADDRESS;
		(void)HYPERVISOR_block_io_op(&op);

		blk_ring = (blk_ring_t *)uvm_km_valloc_align(kernel_map,
		    PAGE_SIZE, PAGE_SIZE);
		pmap_kenter_ma((vaddr_t)blk_ring, op.u.ring_mfn << PAGE_SHIFT,
		    VM_PROT_READ|VM_PROT_WRITE);
		DPRINTF(XBDB_SETUP, ("init_interface: "
		    "ring va %p and wired to %p\n",
		    blk_ring, (void *)(op.u.ring_mfn << PAGE_SHIFT)));

		blk_ring->req_prod = blk_ring->resp_prod =
			resp_cons = req_prod = last_req_prod = 0;

		event_set_handler(_EVENT_BLKDEV, &xbd_response_handler,
		    NULL, IPL_BIO);
		hypervisor_enable_event(_EVENT_BLKDEV);
	}

	__insn_barrier();
	state = STATE_ACTIVE;
}

Example #2

File: uvm_km.c Project: repos-holder/openbsd-patches

vaddr_t
uvm_km_valloc(struct vm_map *map, vsize_t size)
{
	return(uvm_km_valloc_align(map, size, 0));
}

Example #3

File: cpu.c Project: bradla/OpenBSD-Hammer2

struct cpu_info *
alloc_cpuinfo(struct mainbus_attach_args *ma)
{
	paddr_t pa0, pa;
	vaddr_t va, va0;
	vsize_t sz = 8 * PAGE_SIZE;
	int portid;
	struct cpu_info *cpi, *ci;
	extern paddr_t cpu0paddr;

	portid = getpropint(ma->ma_node, "upa-portid", -1);
	if (portid == -1)
		portid = getpropint(ma->ma_node, "portid", -1);
	if (portid == -1)
		portid = getpropint(ma->ma_node, "cpuid", -1);
	if (portid == -1 && ma->ma_nreg > 0)
		portid = (ma->ma_reg[0].ur_paddr >> 32) & 0x0fffffff;
	if (portid == -1)
		panic("alloc_cpuinfo: portid");

	for (cpi = cpus; cpi != NULL; cpi = cpi->ci_next)
		if (cpi->ci_upaid == portid)
			return cpi;

	va = uvm_km_valloc_align(kernel_map, sz, 8 * PAGE_SIZE, 0);
	if (va == 0)
		panic("alloc_cpuinfo: no virtual space");
	va0 = va;

	pa0 = cpu0paddr;
	cpu0paddr += sz;

	for (pa = pa0; pa < cpu0paddr; pa += PAGE_SIZE, va += PAGE_SIZE)
		pmap_kenter_pa(va, pa, VM_PROT_READ | VM_PROT_WRITE);

	pmap_update(pmap_kernel());

	cpi = (struct cpu_info *)(va0 + CPUINFO_VA - INTSTACK);

	memset((void *)va0, 0, sz);

	/*
	 * Initialize cpuinfo structure.
	 *
	 * Arrange pcb, idle stack and interrupt stack in the same
	 * way as is done for the boot CPU in pmap.c.
	 */
	cpi->ci_next = NULL;
	cpi->ci_curproc = NULL;
	cpi->ci_number = ncpus++;
	cpi->ci_upaid = portid;
	cpi->ci_fpproc = NULL;
#ifdef MULTIPROCESSOR
	cpi->ci_spinup = cpu_hatch;				/* XXX */
#else
	cpi->ci_spinup = NULL;
#endif

	cpi->ci_initstack = cpi;
	cpi->ci_paddr = pa0;
#ifdef SUN4V
	cpi->ci_mmfsa = pa0;
#endif
	cpi->ci_self = cpi;
	cpi->ci_node = ma->ma_node;

	sched_init_cpu(cpi);

	/*
	 * Finally, add itself to the list of active cpus.
	 */
	for (ci = cpus; ci->ci_next != NULL; ci = ci->ci_next)
		;
	ci->ci_next = cpi;
	return (cpi);
}