[dpdk-dev] [PATCH] i40e: support xen domain0
Liu, Jijiang
jijiang.liu at intel.com
Wed Aug 20 03:43:50 CEST 2014
Acked-by: Jijiang Liu <jijiang.liu at intel.com>
> -----Original Message-----
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Helin Zhang
> Sent: Thursday, August 14, 2014 2:13 PM
> To: dev at dpdk.org
> Subject: [dpdk-dev] [PATCH] i40e: support xen domain0
>
> i40e was failing to run in XEN domain0, as the physical memory for adminq
> DMA should be allocated and translated in a different way for XEN domain0.
> So
> rte_memzone_reserve_bounded() should be used for DMA memory allocation,
> and rte_mem_phy2mch() should be used for DMA memory address translation
> to support running i40e PMD in XEN domain0.
>
> Signed-off-by: Helin Zhang <helin.zhang at intel.com>
> ---
> lib/librte_pmd_i40e/i40e_ethdev.c | 9 +++++++++
> 1 file changed, 9 insertions(+)
>
> diff --git a/lib/librte_pmd_i40e/i40e_ethdev.c
> b/lib/librte_pmd_i40e/i40e_ethdev.c
> index 9ed31b5..7a823a0 100644
> --- a/lib/librte_pmd_i40e/i40e_ethdev.c
> +++ b/lib/librte_pmd_i40e/i40e_ethdev.c
> @@ -1515,14 +1515,23 @@
> i40e_allocate_dma_mem_d(__attribute__((unused)) struct i40e_hw *hw,
>
> id++;
> snprintf(z_name, sizeof(z_name), "i40e_dma_%"PRIu64, id);
> +#ifdef RTE_LIBRTE_XEN_DOM0
> + mz = rte_memzone_reserve_bounded(z_name, size, 0, 0, alignment,
> + RTE_PGSIZE_2M);
> +#else
> mz = rte_memzone_reserve_aligned(z_name, size, 0, 0, alignment);
> +#endif
> if (!mz)
> return I40E_ERR_NO_MEMORY;
>
> mem->id = id;
> mem->size = size;
> mem->va = mz->addr;
> +#ifdef RTE_LIBRTE_XEN_DOM0
> + mem->pa = rte_mem_phy2mch(mz->memseg_id, mz->phys_addr); #else
> mem->pa = mz->phys_addr;
> +#endif
>
> return I40E_SUCCESS;
> }
> --
> 1.8.1.4
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