diff options
Diffstat (limited to 'hw/rdma/vmw/pvrdma_main.c')
| -rw-r--r-- | hw/rdma/vmw/pvrdma_main.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/hw/rdma/vmw/pvrdma_main.c b/hw/rdma/vmw/pvrdma_main.c index 4fc6712025..e735ff97eb 100644 --- a/hw/rdma/vmw/pvrdma_main.c +++ b/hw/rdma/vmw/pvrdma_main.c @@ -91,19 +91,33 @@ static int init_dev_ring(PvrdmaRing *ring, PvrdmaRingState **ring_state, dma_addr_t dir_addr, uint32_t num_pages) { uint64_t *dir, *tbl; - int rc = 0; + int max_pages, rc = 0; if (!num_pages) { rdma_error_report("Ring pages count must be strictly positive"); return -EINVAL; } + /* + * Make sure we can satisfy the requested number of pages in a single + * TARGET_PAGE_SIZE sized page table (taking into account that first entry + * is reserved for ring-state) + */ + max_pages = TARGET_PAGE_SIZE / sizeof(dma_addr_t) - 1; + if (num_pages > max_pages) { + rdma_error_report("Maximum pages on a single directory must not exceed %d\n", + max_pages); + return -EINVAL; + } + dir = rdma_pci_dma_map(pci_dev, dir_addr, TARGET_PAGE_SIZE); if (!dir) { rdma_error_report("Failed to map to page directory (ring %s)", name); rc = -ENOMEM; goto out; } + + /* We support only one page table for a ring */ tbl = rdma_pci_dma_map(pci_dev, dir[0], TARGET_PAGE_SIZE); if (!tbl) { rdma_error_report("Failed to map to page table (ring %s)", name); @@ -601,6 +615,8 @@ static void pvrdma_realize(PCIDevice *pdev, Error **errp) bool ram_shared = false; PCIDevice *func0; + warn_report_once("pvrdma is deprecated and will be removed in a future release"); + rdma_info_report("Initializing device %s %x.%x", pdev->name, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); |