Include at least signoff.
> -----Original Message-----
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of lxu
> Sent: Thursday, November 06, 2014 2:47 PM
> To: dev at dpdk.org
> Subject: [dpdk-dev] [PATCH v3] eal: map uio resources after hugepages
> when the base_virtaddr is configured.
>
> ---
> lib/librte_eal/linuxapp/eal/eal_pci_uio.c | 29
> ++++++++++++++++++++++++++++-
> 1 file changed, 28 insertions(+), 1 deletion(-)
>
> diff --git a/lib/librte_eal/linuxapp/eal/eal_pci_uio.c
> b/lib/librte_eal/linuxapp/eal/eal_pci_uio.c
> index 7e62266..3a218d0 100644
> --- a/lib/librte_eal/linuxapp/eal/eal_pci_uio.c
> +++ b/lib/librte_eal/linuxapp/eal/eal_pci_uio.c
> @@ -273,6 +273,24 @@ pci_get_uio_dev(struct rte_pci_device *dev, char
> *dstbuf,
> return uio_num;
> }
>
> +static inline const struct rte_memseg *
> +get_physmem_last(void)
> +{
> + const struct rte_memseg * seg = rte_eal_get_physmem_layout();
> + const struct rte_memseg * last = seg;
> + unsigned i = 0;
> +
> + for (i=0; i<RTE_MAX_MEMSEG; i++, seg++) {
> + if (seg->addr == NULL)
> + break;
> +
> + if(seg->addr > last->addr)
> + last = seg;
> +
> + }
> + return last;
> +}
> +
> /* map the PCI resource of a PCI device in virtual memory */
> int
> pci_uio_map_resource(struct rte_pci_device *dev)
> @@ -290,6 +308,13 @@ pci_uio_map_resource(struct rte_pci_device *dev)
> struct mapped_pci_resource *uio_res;
> struct pci_map *maps;
>
> + /* map uio resource into user required virtual address */
> + static void * requested_addr;
> + if (internal_config.base_virtaddr && NULL == requested_addr) {
> + const struct rte_memseg * last = get_physmem_last();
> + requested_addr = RTE_PTR_ADD(last->addr, last->len);
> + }
> +
> dev->intr_handle.fd = -1;
> dev->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
>
> @@ -371,10 +396,12 @@ pci_uio_map_resource(struct rte_pci_device *dev)
> if (maps[j].addr != NULL)
> fail = 1;
> else {
> - mapaddr = pci_map_resource(NULL, fd,
> (off_t)offset,
> + mapaddr =
> pci_map_resource(requested_addr, fd, (off_t)offset,
> (size_t)maps[j].size);
> if (mapaddr == NULL)
> fail = 1;
> + else if (NULL != requested_addr)
> + requested_addr = (uint8_t
> *)mapaddr + maps[j].size;
> }
>
> if (fail) {
> --
> 1.9.1
