From 8047d36fe563bf7ee7b28a284a0892506a6000a9 Mon Sep 17 00:00:00 2001 From: "Wachowski, Karol" Date: Mon, 15 Jan 2024 14:44:28 +0100 Subject: accel/ivpu: Add debug prints for MMU map/unmap operations It is common need to be able to see IOVA/physical to VPU addresses mappings. Especially when debugging different kind of memory related issues. Lack of such logs forces user to modify and recompile KMD manually. This commit adds those logs under MMU debug mask which can be turned on dynamically with module param during KMD load. Signed-off-by: Wachowski, Karol Signed-off-by: Jacek Lawrynowicz Reviewed-by: Jacek Lawrynowicz Link: https://patchwork.freedesktop.org/patch/msgid/20240115134434.493839-4-jacek.lawrynowicz@linux.intel.com --- drivers/accel/ivpu/ivpu_drv.h | 1 + drivers/accel/ivpu/ivpu_mmu_context.c | 9 +++++++++ 2 files changed, 10 insertions(+) (limited to 'drivers/accel') diff --git a/drivers/accel/ivpu/ivpu_drv.h b/drivers/accel/ivpu/ivpu_drv.h index ebc4b84f27b2..9b6e336626e3 100644 --- a/drivers/accel/ivpu/ivpu_drv.h +++ b/drivers/accel/ivpu/ivpu_drv.h @@ -56,6 +56,7 @@ #define IVPU_DBG_JSM BIT(10) #define IVPU_DBG_KREF BIT(11) #define IVPU_DBG_RPM BIT(12) +#define IVPU_DBG_MMU_MAP BIT(13) #define ivpu_err(vdev, fmt, ...) \ drm_err(&(vdev)->drm, "%s(): " fmt, __func__, ##__VA_ARGS__) diff --git a/drivers/accel/ivpu/ivpu_mmu_context.c b/drivers/accel/ivpu/ivpu_mmu_context.c index 12a8c09d4547..fe6161299236 100644 --- a/drivers/accel/ivpu/ivpu_mmu_context.c +++ b/drivers/accel/ivpu/ivpu_mmu_context.c @@ -355,6 +355,9 @@ ivpu_mmu_context_map_sgt(struct ivpu_device *vdev, struct ivpu_mmu_context *ctx, dma_addr_t dma_addr = sg_dma_address(sg) - sg->offset; size_t size = sg_dma_len(sg) + sg->offset; + ivpu_dbg(vdev, MMU_MAP, "Map ctx: %u dma_addr: 0x%llx vpu_addr: 0x%llx size: %lu\n", + ctx->id, dma_addr, vpu_addr, size); + ret = ivpu_mmu_context_map_pages(vdev, ctx, vpu_addr, dma_addr, size, prot); if (ret) { ivpu_err(vdev, "Failed to map context pages\n"); @@ -366,6 +369,7 @@ ivpu_mmu_context_map_sgt(struct ivpu_device *vdev, struct ivpu_mmu_context *ctx, /* Ensure page table modifications are flushed from wc buffers to memory */ wmb(); + mutex_unlock(&ctx->lock); ret = ivpu_mmu_invalidate_tlb(vdev, ctx->id); @@ -388,14 +392,19 @@ ivpu_mmu_context_unmap_sgt(struct ivpu_device *vdev, struct ivpu_mmu_context *ct mutex_lock(&ctx->lock); for_each_sgtable_dma_sg(sgt, sg, i) { + dma_addr_t dma_addr = sg_dma_address(sg) - sg->offset; size_t size = sg_dma_len(sg) + sg->offset; + ivpu_dbg(vdev, MMU_MAP, "Unmap ctx: %u dma_addr: 0x%llx vpu_addr: 0x%llx size: %lu\n", + ctx->id, dma_addr, vpu_addr, size); + ivpu_mmu_context_unmap_pages(ctx, vpu_addr, size); vpu_addr += size; } /* Ensure page table modifications are flushed from wc buffers to memory */ wmb(); + mutex_unlock(&ctx->lock); ret = ivpu_mmu_invalidate_tlb(vdev, ctx->id); -- cgit v1.2.3