From 998261726a6aff3c8a88ae6965e51a6717b467ff Mon Sep 17 00:00:00 2001 From: Markus Armbruster Date: Tue, 15 Mar 2016 19:34:21 +0100 Subject: [PATCH] tests/libqos/pci-pc: Fix qpci_pc_iomap() to map BARs aligned MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit qpci_pc_iomap() maps BARs one after the other, without padding. This is wrong. PCI Local Bus Specification Revision 3.0, 6.2.5.1. Address Maps: "all address spaces used are a power of two in size and are naturally aligned". That's because the size of a BAR is given by the number of address bits the device decodes, and the BAR needs to be mapped at a multiple of that size to ensure the address decoding works. Fix qpci_pc_iomap() accordingly. This takes care of a FIXME in ivshmem-test. Signed-off-by: Markus Armbruster Reviewed-by: Marc-André Lureau Message-Id: <1458066895-20632-7-git-send-email-armbru@redhat.com> --- tests/ivshmem-test.c | 13 ++++++------- tests/libqos/pci-pc.c | 8 ++++++-- 2 files changed, 12 insertions(+), 9 deletions(-) diff --git a/tests/ivshmem-test.c b/tests/ivshmem-test.c index 4efa433f6e..da6ca0dd9e 100644 --- a/tests/ivshmem-test.c +++ b/tests/ivshmem-test.c @@ -110,18 +110,17 @@ static void setup_vm_cmd(IVState *s, const char *cmd, bool msix) s->pcibus = qpci_init_pc(); s->dev = get_device(s->pcibus); - /* FIXME: other bar order fails, mappings changes */ - s->mem_base = qpci_iomap(s->dev, 2, &barsize); - g_assert_nonnull(s->mem_base); - g_assert_cmpuint(barsize, ==, TMPSHMSIZE); + s->reg_base = qpci_iomap(s->dev, 0, &barsize); + g_assert_nonnull(s->reg_base); + g_assert_cmpuint(barsize, ==, 256); if (msix) { qpci_msix_enable(s->dev); } - s->reg_base = qpci_iomap(s->dev, 0, &barsize); - g_assert_nonnull(s->reg_base); - g_assert_cmpuint(barsize, ==, 256); + s->mem_base = qpci_iomap(s->dev, 2, &barsize); + g_assert_nonnull(s->mem_base); + g_assert_cmpuint(barsize, ==, TMPSHMSIZE); qpci_device_enable(s->dev); } diff --git a/tests/libqos/pci-pc.c b/tests/libqos/pci-pc.c index 08167c09fe..77f15e5a0e 100644 --- a/tests/libqos/pci-pc.c +++ b/tests/libqos/pci-pc.c @@ -184,7 +184,9 @@ static void *qpci_pc_iomap(QPCIBus *bus, QPCIDevice *dev, int barno, uint64_t *s if (io_type == PCI_BASE_ADDRESS_SPACE_IO) { uint16_t loc; - g_assert((s->pci_iohole_alloc + size) <= s->pci_iohole_size); + g_assert(QEMU_ALIGN_UP(s->pci_iohole_alloc, size) + size + <= s->pci_iohole_size); + s->pci_iohole_alloc = QEMU_ALIGN_UP(s->pci_iohole_alloc, size); loc = s->pci_iohole_start + s->pci_iohole_alloc; s->pci_iohole_alloc += size; @@ -194,7 +196,9 @@ static void *qpci_pc_iomap(QPCIBus *bus, QPCIDevice *dev, int barno, uint64_t *s } else { uint64_t loc; - g_assert((s->pci_hole_alloc + size) <= s->pci_hole_size); + g_assert(QEMU_ALIGN_UP(s->pci_hole_alloc, size) + size + <= s->pci_hole_size); + s->pci_hole_alloc = QEMU_ALIGN_UP(s->pci_hole_alloc, size); loc = s->pci_hole_start + s->pci_hole_alloc; s->pci_hole_alloc += size;