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# Run with "libero SCRIPT:libero.tcl"

file delete -force proj

new_project \
    -name example \
    -location proj \
    -block_mode 0 \
    -hdl "VERILOG" \
    -family IGLOO2 \
    -die PA4MGL2500 \
    -package vf256 \
    -speed -1

import_files -hdl_source {netlist.vm}
import_files -sdc {example.sdc}
import_files -io_pdc {example.pdc}
build_design_hierarchy
set_option -synth 0

organize_tool_files -tool PLACEROUTE \
    -file {proj/constraint/example.sdc} \
    -file {proj/constraint/io/example.pdc} \
    -input_type constraint

organize_tool_files -tool VERIFYTIMING \
    -file {proj/constraint/example.sdc} \
    -input_type constraint

configure_tool -name PLACEROUTE \
    -params TDPR:true \
    -params PDPR:false \
    -params EFFORT_LEVEL:false \
    -params REPAIR_MIN_DELAY:false

puts ""
puts "**> COMPILE"
run_tool -name {COMPILE}
puts "<** COMPILE"

puts ""
puts "**> PLACEROUTE"
run_tool -name {PLACEROUTE}
puts "<** PLACEROUTE"

puts ""
puts "**> VERIFYTIMING"
run_tool -name {VERIFYTIMING}
puts "<** VERIFYTIMING"

puts ""
puts "**> BITSTREAM"
export_bitstream_file -trusted_facility_file 1 -trusted_facility_file_components {FABRIC}
puts "<** BITSTREAM"

puts ""
exit 0
>349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633
/******************************************************************************
 * memory.c
 *
 * Code to handle memory-related requests.
 *
 * Copyright (c) 2003-2004, B Dragovic
 * Copyright (c) 2003-2005, K A Fraser
 */

#include <xen/config.h>
#include <xen/types.h>
#include <xen/lib.h>
#include <xen/mm.h>
#include <xen/perfc.h>
#include <xen/sched.h>
#include <xen/event.h>
#include <xen/shadow.h>
#include <xen/iocap.h>
#include <xen/guest_access.h>
#include <xen/hypercall.h>
#include <xen/errno.h>
#include <asm/current.h>
#include <asm/hardirq.h>
#include <public/memory.h>

struct memop_args {
    /* INPUT */
    struct domain *domain;     /* Domain to be affected. */
    XEN_GUEST_HANDLE(xen_pfn_t) extent_list; /* List of extent base addrs. */
    unsigned int nr_extents;   /* Number of extents to allocate or free. */
    unsigned int extent_order; /* Size of each extent. */
    unsigned int memflags;     /* Allocation flags. */

    /* INPUT/OUTPUT */
    unsigned int nr_done;    /* Number of extents processed so far. */
    int          preempted;  /* Was the hypercall preempted? */
};

static unsigned int select_local_cpu(struct domain *d)
{
    struct vcpu *v = d->vcpu[0];
    return (v ? v->processor : 0);
}

static void increase_reservation(struct memop_args *a)
{
    struct page_info *page;
    unsigned long i;
    xen_pfn_t mfn;
    struct domain *d = a->domain;
    unsigned int cpu = select_local_cpu(d);

    if ( !guest_handle_is_null(a->extent_list) &&
         !guest_handle_okay(a->extent_list, a->nr_extents) )
        return;

    if ( (a->extent_order != 0) &&
         !multipage_allocation_permitted(current->domain) )
        return;

    for ( i = a->nr_done; i < a->nr_extents; i++ )
    {
        if ( hypercall_preempt_check() )
        {
            a->preempted = 1;
            goto out;
        }

        page = __alloc_domheap_pages(d, cpu, a->extent_order, a->memflags);
        if ( unlikely(page == NULL) ) 
        {
            gdprintk(XENLOG_INFO, "Could not allocate order=%d extent: "
                    "id=%d memflags=%x (%ld of %d)\n",
                     a->extent_order, d->domain_id, a->memflags,
                     i, a->nr_extents);
            goto out;
        }

        /* Inform the domain of the new page's machine address. */ 
        if ( !guest_handle_is_null(a->extent_list) )
        {
            mfn = page_to_mfn(page);
            if ( unlikely(__copy_to_guest_offset(a->extent_list, i, &mfn, 1)) )
                goto out;
        }
    }

 out:
    a->nr_done = i;
}

static void populate_physmap(struct memop_args *a)
{
    struct page_info *page;
    unsigned long i, j;
    xen_pfn_t gpfn, mfn;
    struct domain *d = a->domain;
    unsigned int cpu = select_local_cpu(d);

    if ( !guest_handle_okay(a->extent_list, a->nr_extents) )
        return;

    if ( (a->extent_order != 0) &&
         !multipage_allocation_permitted(current->domain) )
        return;

    for ( i = a->nr_done; i < a->nr_extents; i++ )
    {
        if ( hypercall_preempt_check() )
        {
            a->preempted = 1;
            goto out;
        }

        if ( unlikely(__copy_from_guest_offset(&gpfn, a->extent_list, i, 1)) )
            goto out;

        page = __alloc_domheap_pages(d, cpu, a->extent_order, a->memflags);
        if ( unlikely(page == NULL) ) 
        {
            gdprintk(XENLOG_INFO, "Could not allocate order=%d extent: "
                     "id=%d memflags=%x (%ld of %d)\n",
                     a->extent_order, d->domain_id, a->memflags,
                     i, a->nr_extents);
            goto out;
        }

        mfn = page_to_mfn(page);

        if ( unlikely(shadow_mode_translate(d)) )
        {
            for ( j = 0; j < (1 << a->extent_order); j++ )
                guest_physmap_add_page(d, gpfn + j, mfn + j);
        }
        else
        {
            for ( j = 0; j < (1 << a->extent_order); j++ )
                set_gpfn_from_mfn(mfn + j, gpfn + j);

            /* Inform the domain of the new page's machine address. */ 
            if ( unlikely(__copy_to_guest_offset(a->extent_list, i, &mfn, 1)) )
                goto out;
        }
    }

 out:
    a->nr_done = i;
}

int guest_remove_page(struct domain *d, unsigned long gmfn)
{
    struct page_info *page;
    unsigned long mfn;

    mfn = gmfn_to_mfn(d, gmfn);
    if ( unlikely(!mfn_valid(mfn)) )
    {
        gdprintk(XENLOG_INFO, "Domain %u page number %lx invalid\n",
                d->domain_id, gmfn);
        return 0;
    }
            
    page = mfn_to_page(mfn);
    if ( unlikely(!get_page(page, d)) )
    {
        gdprintk(XENLOG_INFO, "Bad page free for domain %u\n", d->domain_id);
        return 0;
    }

    if ( test_and_clear_bit(_PGT_pinned, &page->u.inuse.type_info) )
        put_page_and_type(page);
            
    if ( test_and_clear_bit(_PGC_allocated, &page->count_info) )
        put_page(page);

    guest_physmap_remove_page(d, gmfn, mfn);

    put_page(page);

    return 1;
}

static void decrease_reservation(struct memop_args *a)
{
    unsigned long i, j;
    xen_pfn_t gmfn;

    if ( !guest_handle_okay(a->extent_list, a->nr_extents) )
        return;

    for ( i = a->nr_done; i < a->nr_extents; i++ )
    {
        if ( hypercall_preempt_check() )
        {
            a->preempted = 1;
            goto out;
        }

        if ( unlikely(__copy_from_guest_offset(&gmfn, a->extent_list, i, 1)) )
            goto out;

        for ( j = 0; j < (1 << a->extent_order); j++ )
            if ( !guest_remove_page(a->domain, gmfn + j) )
                goto out;
    }

 out:
    a->nr_done = i;
}

static long translate_gpfn_list(
    XEN_GUEST_HANDLE(xen_translate_gpfn_list_t) uop, unsigned long *progress)
{
    struct xen_translate_gpfn_list op;
    unsigned long i;
    xen_pfn_t gpfn;
    xen_pfn_t mfn;
    struct domain *d;

    if ( copy_from_guest(&op, uop, 1) )
        return -EFAULT;

    /* Is size too large for us to encode a continuation? */
    if ( op.nr_gpfns > (ULONG_MAX >> MEMOP_EXTENT_SHIFT) )
        return -EINVAL;

    if ( !guest_handle_okay(op.gpfn_list, op.nr_gpfns) ||
         !guest_handle_okay(op.mfn_list,  op.nr_gpfns) )
        return -EFAULT;

    if ( op.domid == DOMID_SELF )
        op.domid = current->domain->domain_id;
    else if ( !IS_PRIV(current->domain) )
        return -EPERM;

    if ( (d = rcu_lock_domain_by_id(op.domid)) == NULL )
        return -ESRCH;

    if ( !shadow_mode_translate(d) )
    {
        rcu_unlock_domain(d);
        return -EINVAL;
    }

    for ( i = *progress; i < op.nr_gpfns; i++ )
    {
        if ( hypercall_preempt_check() )
        {
            rcu_unlock_domain(d);
            *progress = i;
            return -EAGAIN;
        }

        if ( unlikely(__copy_from_guest_offset(&gpfn, op.gpfn_list, i, 1)) )
        {
            rcu_unlock_domain(d);
            return -EFAULT;
        }

        mfn = gmfn_to_mfn(d, gpfn);

        if ( unlikely(__copy_to_guest_offset(op.mfn_list, i, &mfn, 1)) )
        {
            rcu_unlock_domain(d);
            return -EFAULT;
        }
    }

    rcu_unlock_domain(d);
    return 0;
}

static long memory_exchange(XEN_GUEST_HANDLE(xen_memory_exchange_t) arg)
{
    struct xen_memory_exchange exch;
    LIST_HEAD(in_chunk_list);
    LIST_HEAD(out_chunk_list);
    unsigned long in_chunk_order, out_chunk_order;
    xen_pfn_t     gpfn, gmfn, mfn;
    unsigned long i, j, k;
    unsigned int  memflags = 0, cpu;
    long          rc = 0;
    struct domain *d;
    struct page_info *page;

    if ( copy_from_guest(&exch, arg, 1) )
        return -EFAULT;

    /* Various sanity checks. */
    if ( (exch.nr_exchanged > exch.in.nr_extents) ||
         /* Input and output domain identifiers match? */
         (exch.in.domid != exch.out.domid) ||
         /* Sizes of input and output lists do not overflow a long? */
         ((~0UL >> exch.in.extent_order) < exch.in.nr_extents) ||
         ((~0UL >> exch.out.extent_order) < exch.out.nr_extents) ||
         /* Sizes of input and output lists match? */
         ((exch.in.nr_extents << exch.in.extent_order) !=
          (exch.out.nr_extents << exch.out.extent_order)) )
    {
        rc = -EINVAL;
        goto fail_early;
    }

    /* Only privileged guests can allocate multi-page contiguous extents. */
    if ( ((exch.in.extent_order != 0) || (exch.out.extent_order != 0)) &&
         !multipage_allocation_permitted(current->domain) )
    {
        rc = -EPERM;
        goto fail_early;
    }

    if ( (exch.out.address_bits != 0) &&
         (exch.out.address_bits <
          (get_order_from_pages(max_page) + PAGE_SHIFT)) )
    {
        if ( exch.out.address_bits <= PAGE_SHIFT )
        {
            rc = -ENOMEM;
            goto fail_early;
        }
        memflags = MEMF_bits(exch.out.address_bits);
    }

    if ( exch.in.extent_order <= exch.out.extent_order )
    {
        in_chunk_order  = exch.out.extent_order - exch.in.extent_order;
        out_chunk_order = 0;
    }
    else
    {
        in_chunk_order  = 0;
        out_chunk_order = exch.in.extent_order - exch.out.extent_order;
    }

    /*
     * Only support exchange on calling domain right now. Otherwise there are
     * tricky corner cases to consider (e.g., dying domain).
     */
    if ( unlikely(exch.in.domid != DOMID_SELF) )
    {
        rc = IS_PRIV(current->domain) ? -EINVAL : -EPERM;
        goto fail_early;
    }
    d = current->domain;

    cpu = select_local_cpu(d);

    for ( i = (exch.nr_exchanged >> in_chunk_order);
          i < (exch.in.nr_extents >> in_chunk_order);
          i++ )
    {
        if ( hypercall_preempt_check() )
        {
            exch.nr_exchanged = i << in_chunk_order;
            if ( copy_field_to_guest(arg, &exch, nr_exchanged) )
                return -EFAULT;
            return hypercall_create_continuation(
                __HYPERVISOR_memory_op, "lh", XENMEM_exchange, arg);
        }

        /* Steal a chunk's worth of input pages from the domain. */
        for ( j = 0; j < (1UL << in_chunk_order); j++ )
        {
            if ( unlikely(__copy_from_guest_offset(
                &gmfn, exch.in.extent_start, (i<<in_chunk_order)+j, 1)) )
            {
                rc = -EFAULT;
                goto fail;
            }

            for ( k = 0; k < (1UL << exch.in.extent_order); k++ )
            {
                mfn = gmfn_to_mfn(d, gmfn + k);
                if ( unlikely(!mfn_valid(mfn)) )
                {
                    rc = -EINVAL;
                    goto fail;
                }

                page = mfn_to_page(mfn);

                if ( unlikely(steal_page(d, page, MEMF_no_refcount)) )
                {
                    rc = -EINVAL;
                    goto fail;
                }

                list_add(&page->list, &in_chunk_list);
            }
        }

        /* Allocate a chunk's worth of anonymous output pages. */
        for ( j = 0; j < (1UL << out_chunk_order); j++ )
        {
            page = __alloc_domheap_pages(
                NULL, cpu, exch.out.extent_order, memflags);
            if ( unlikely(page == NULL) )
            {
                rc = -ENOMEM;
                goto fail;
            }

            list_add(&page->list, &out_chunk_list);
        }

        /*
         * Success! Beyond this point we cannot fail for this chunk.
         */

        /* Destroy final reference to each input page. */
        while ( !list_empty(&in_chunk_list) )
        {
            page = list_entry(in_chunk_list.next, struct page_info, list);
            list_del(&page->list);
            if ( !test_and_clear_bit(_PGC_allocated, &page->count_info) )
                BUG();
            mfn = page_to_mfn(page);
            guest_physmap_remove_page(d, mfn_to_gmfn(d, mfn), mfn);
            put_page(page);
        }

        /* Assign each output page to the domain. */
        j = 0;
        while ( !list_empty(&out_chunk_list) )
        {
            page = list_entry(out_chunk_list.next, struct page_info, list);
            list_del(&page->list);
            if ( assign_pages(d, page, exch.out.extent_order,
                              MEMF_no_refcount) )
                BUG();

            /* Note that we ignore errors accessing the output extent list. */
            (void)__copy_from_guest_offset(
                &gpfn, exch.out.extent_start, (i<<out_chunk_order)+j, 1);

            mfn = page_to_mfn(page);
            if ( unlikely(shadow_mode_translate(d)) )
            {
                for ( k = 0; k < (1UL << exch.out.extent_order); k++ )
                    guest_physmap_add_page(d, gpfn + k, mfn + k);
            }
            else
            {
                for ( k = 0; k < (1UL << exch.out.extent_order); k++ )
                    set_gpfn_from_mfn(mfn + k, gpfn + k);
                (void)__copy_to_guest_offset(
                    exch.out.extent_start, (i<<out_chunk_order)+j, &mfn, 1);
            }

            j++;
        }
        BUG_ON(j != (1UL << out_chunk_order));
    }

    exch.nr_exchanged = exch.in.nr_extents;
    if ( copy_field_to_guest(arg, &exch, nr_exchanged) )
        rc = -EFAULT;
    return rc;

    /*
     * Failed a chunk! Free any partial chunk work. Tell caller how many
     * chunks succeeded.
     */
 fail:
    /* Reassign any input pages we managed to steal. */
    while ( !list_empty(&in_chunk_list) )
    {
        page = list_entry(in_chunk_list.next, struct page_info, list);
        list_del(&page->list);
        if ( assign_pages(d, page, 0, MEMF_no_refcount) )
            BUG();
    }

    /* Free any output pages we managed to allocate. */
    while ( !list_empty(&out_chunk_list) )
    {
        page = list_entry(out_chunk_list.next, struct page_info, list);
        list_del(&page->list);
        free_domheap_pages(page, exch.out.extent_order);
    }

    exch.nr_exchanged = i << in_chunk_order;

 fail_early:
    if ( copy_field_to_guest(arg, &exch, nr_exchanged) )
        rc = -EFAULT;
    return rc;
}

long do_memory_op(unsigned long cmd, XEN_GUEST_HANDLE(void) arg)
{
    struct domain *d;
    int rc, op;
    unsigned long start_extent, progress;
    struct xen_memory_reservation reservation;
    struct memop_args args;
    domid_t domid;

    op = cmd & MEMOP_CMD_MASK;

    switch ( op )
    {
    case XENMEM_increase_reservation:
    case XENMEM_decrease_reservation:
    case XENMEM_populate_physmap:
        start_extent = cmd >> MEMOP_EXTENT_SHIFT;

        if ( copy_from_guest(&reservation, arg, 1) )
            return start_extent;

        /* Is size too large for us to encode a continuation? */
        if ( reservation.nr_extents > (ULONG_MAX >> MEMOP_EXTENT_SHIFT) )
            return start_extent;

        if ( unlikely(start_extent > reservation.nr_extents) )
            return start_extent;

        args.extent_list  = reservation.extent_start;
        args.nr_extents   = reservation.nr_extents;
        args.extent_order = reservation.extent_order;
        args.nr_done      = start_extent;
        args.preempted    = 0;
        args.memflags     = 0;

        if ( (reservation.address_bits != 0) &&
             (reservation.address_bits <
              (get_order_from_pages(max_page) + PAGE_SHIFT)) )
        {
            if ( reservation.address_bits <= PAGE_SHIFT )
                return start_extent;
            args.memflags = MEMF_bits(reservation.address_bits);
        }

        if ( likely(reservation.domid == DOMID_SELF) )
            d = current->domain;
        else if ( !IS_PRIV(current->domain) ||
                  ((d = rcu_lock_domain_by_id(reservation.domid)) == NULL) )
            return start_extent;
        args.domain = d;

        switch ( op )
        {
        case XENMEM_increase_reservation:
            increase_reservation(&args);
            break;
        case XENMEM_decrease_reservation:
            decrease_reservation(&args);
            break;
        default: /* XENMEM_populate_physmap */
            populate_physmap(&args);
            break;
        }

        if ( unlikely(reservation.domid != DOMID_SELF) )
            rcu_unlock_domain(d);

        rc = args.nr_done;

        if ( args.preempted )
            return hypercall_create_continuation(
                __HYPERVISOR_memory_op, "lh",
                op | (rc << MEMOP_EXTENT_SHIFT), arg);

        break;

    case XENMEM_exchange:
        rc = memory_exchange(guest_handle_cast(arg, xen_memory_exchange_t));
        break;

    case XENMEM_maximum_ram_page:
        rc = max_page;
        break;

    case XENMEM_current_reservation:
    case XENMEM_maximum_reservation:
    case XENMEM_maximum_gpfn:
        if ( copy_from_guest(&domid, arg, 1) )
            return -EFAULT;

        if ( likely(domid == DOMID_SELF) )
            d = current->domain;
        else if ( !IS_PRIV(current->domain) )
            return -EPERM;
        else if ( (d = rcu_lock_domain_by_id(domid)) == NULL )
            return -ESRCH;

        switch ( op )
        {
        case XENMEM_current_reservation:
            rc = d->tot_pages;
            break;
        case XENMEM_maximum_reservation:
            rc = d->max_pages;
            break;
        default:
            ASSERT(op == XENMEM_maximum_gpfn);
            rc = domain_get_maximum_gpfn(d);
            break;
        }

        if ( unlikely(domid != DOMID_SELF) )
            rcu_unlock_domain(d);

        break;

    case XENMEM_translate_gpfn_list:
        progress = cmd >> MEMOP_EXTENT_SHIFT;
        rc = translate_gpfn_list(
            guest_handle_cast(arg, xen_translate_gpfn_list_t),
            &progress);
        if ( rc == -EAGAIN )
            return hypercall_create_continuation(
                __HYPERVISOR_memory_op, "lh",
                op | (progress << MEMOP_EXTENT_SHIFT), arg);
        break;

    default:
        rc = arch_memory_op(op, arg);
        break;
    }

    return rc;
}

/*
 * Local variables:
 * mode: C
 * c-set-style: "BSD"
 * c-basic-offset: 4
 * tab-width: 4
 * indent-tabs-mode: nil
 * End:
 */