netdev - Re: [Patch v7 10/12] net: mana: Define data structures for allocating doorbell page from GDMA

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Date:   Wed, 19 Oct 2022 08:32:25 +0800
From:   Yunsheng Lin <linyunsheng@...wei.com>
To:     <longli@...rosoft.com>, "K. Y. Srinivasan" <kys@...rosoft.com>,
        "Haiyang Zhang" <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Wei Liu <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Leon Romanovsky <leon@...nel.org>, <edumazet@...gle.com>,
        <shiraz.saleem@...el.com>, "Ajay Sharma" <sharmaajay@...rosoft.com>
CC:     <linux-hyperv@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-rdma@...r.kernel.org>
Subject: Re: [Patch v7 10/12] net: mana: Define data structures for allocating
 doorbell page from GDMA

On 2022/10/18 3:20, longli@...uxonhyperv.com wrote:
> From: Long Li <longli@...rosoft.com>
> 
> The RDMA device needs to allocate doorbell pages for each user context.
> Define the GDMA data structures for use by the RDMA driver.
> 
> Reviewed-by: Dexuan Cui <decui@...rosoft.com>
> Signed-off-by: Long Li <longli@...rosoft.com>
> Acked-by: Haiyang Zhang <haiyangz@...rosoft.com>
> ---
> Change log:
> v4: use EXPORT_SYMBOL_NS
> v7: move mana_gd_allocate_doorbell_page() and mana_gd_destroy_doorbell_page() to the RDMA driver
> 
>  include/net/mana/gdma.h | 25 +++++++++++++++++++++++++
>  1 file changed, 25 insertions(+)
> 
> diff --git a/include/net/mana/gdma.h b/include/net/mana/gdma.h
> index a9b7930dfbf8..bc060b6fa54c 100644
> --- a/include/net/mana/gdma.h
> +++ b/include/net/mana/gdma.h
> @@ -24,11 +24,15 @@ enum gdma_request_type {
>  	GDMA_GENERATE_TEST_EQE		= 10,
>  	GDMA_CREATE_QUEUE		= 12,
>  	GDMA_DISABLE_QUEUE		= 13,
> +	GDMA_ALLOCATE_RESOURCE_RANGE	= 22,
> +	GDMA_DESTROY_RESOURCE_RANGE	= 24,
>  	GDMA_CREATE_DMA_REGION		= 25,
>  	GDMA_DMA_REGION_ADD_PAGES	= 26,
>  	GDMA_DESTROY_DMA_REGION		= 27,
>  };
>  
> +#define GDMA_RESOURCE_DOORBELL_PAGE	27
> +
>  enum gdma_queue_type {
>  	GDMA_INVALID_QUEUE,
>  	GDMA_SQ,
> @@ -587,6 +591,26 @@ struct gdma_register_device_resp {
>  	u32 db_id;
>  }; /* HW DATA */
>  
> +struct gdma_allocate_resource_range_req {
> +	struct gdma_req_hdr hdr;
> +	u32 resource_type;
> +	u32 num_resources;
> +	u32 alignment;
> +	u32 allocated_resources;
> +};
> +
> +struct gdma_allocate_resource_range_resp {
> +	struct gdma_resp_hdr hdr;
> +	u32 allocated_resources;
> +};
> +
> +struct gdma_destroy_resource_range_req {
> +	struct gdma_req_hdr hdr;
> +	u32 resource_type;
> +	u32 num_resources;
> +	u32 allocated_resources;
> +};
> +
>  /* GDMA_CREATE_QUEUE */
>  struct gdma_create_queue_req {
>  	struct gdma_req_hdr hdr;
> @@ -695,4 +719,5 @@ void mana_gd_free_memory(struct gdma_mem_info *gmi);
>  
>  int mana_gd_send_request(struct gdma_context *gc, u32 req_len, const void *req,
>  			 u32 resp_len, void *resp);
> +

Unrelated change.

>  #endif /* _GDMA_H */
>