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d="scan'208";a="44763641" Received: from szeng-desk.jf.intel.com ([10.165.21.149]) by orviesa004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Jun 2024 19:15:27 -0700 From: Oak Zeng To: intel-xe@lists.freedesktop.org Subject: [CI 24/43] drm/xe: Add dma_addr res cursor Date: Tue, 11 Jun 2024 22:25:46 -0400 Message-Id: <20240612022605.385062-24-oak.zeng@intel.com> X-Mailer: git-send-email 2.26.3 In-Reply-To: <20240612022605.385062-1-oak.zeng@intel.com> References: <20240612022605.385062-1-oak.zeng@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" From: Matthew Brost Signed-off-by: Matthew Brost --- drivers/gpu/drm/xe/xe_res_cursor.h | 50 +++++++++++++++++++++++++++++- 1 file changed, 49 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/xe/xe_res_cursor.h b/drivers/gpu/drm/xe/xe_res_cursor.h index 655af89b31a9..b17b3375f6d9 100644 --- a/drivers/gpu/drm/xe/xe_res_cursor.h +++ b/drivers/gpu/drm/xe/xe_res_cursor.h @@ -44,7 +44,9 @@ struct xe_res_cursor { u64 remaining; void *node; u32 mem_type; + unsigned int order; struct scatterlist *sgl; + const dma_addr_t *dma_addr; struct drm_buddy *mm; }; @@ -71,6 +73,7 @@ static inline void xe_res_first(struct ttm_resource *res, struct xe_res_cursor *cur) { cur->sgl = NULL; + cur->dma_addr = NULL; if (!res) goto fallback; @@ -161,11 +164,43 @@ static inline void xe_res_first_sg(const struct sg_table *sg, cur->start = start; cur->remaining = size; cur->size = 0; + cur->dma_addr = NULL; cur->sgl = sg->sgl; cur->mem_type = XE_PL_TT; __xe_res_sg_next(cur); } +/** + * xe_res_first_dma - initialize a xe_res_cursor with dma_addr array + * + * @dma_addr: dma_addr array to walk + * @start: Start of the range + * @size: Size of the range + * @order: Order of dma mapping. i.e. PAGE_SIZE << order is mapping size + * @cur: cursor object to initialize + * + * Start walking over the range of allocations between @start and @size. + */ +static inline void xe_res_first_dma(const dma_addr_t *dma_addr, + u64 start, u64 size, + unsigned int order, + struct xe_res_cursor *cur) +{ + XE_WARN_ON(start); + XE_WARN_ON(!dma_addr); + XE_WARN_ON(!IS_ALIGNED(start, PAGE_SIZE) || + !IS_ALIGNED(size, PAGE_SIZE)); + + cur->node = NULL; + cur->start = start; + cur->remaining = size; + cur->size = PAGE_SIZE << order; + cur->dma_addr = dma_addr; + cur->order = order; + cur->sgl = NULL; + cur->mem_type = XE_PL_TT; +} + /** * xe_res_next - advance the cursor * @@ -192,6 +227,13 @@ static inline void xe_res_next(struct xe_res_cursor *cur, u64 size) return; } + if (cur->dma_addr) { + cur->size = (PAGE_SIZE << cur->order) - + (size - cur->size); + cur->start += size; + return; + } + if (cur->sgl) { cur->start += size; __xe_res_sg_next(cur); @@ -233,6 +275,12 @@ static inline void xe_res_next(struct xe_res_cursor *cur, u64 size) */ static inline u64 xe_res_dma(const struct xe_res_cursor *cur) { - return cur->sgl ? sg_dma_address(cur->sgl) + cur->start : cur->start; + if (cur->dma_addr) + return cur->dma_addr[cur->start >> (PAGE_SHIFT + cur->order)] + + (cur->start & ((PAGE_SIZE << cur->order) - 1)); + else if (cur->sgl) + return sg_dma_address(cur->sgl) + cur->start; + else + return cur->start; } #endif -- 2.26.3