[19/21] drm/i915/gvt: devirtualize ->dma_{, un}map_guest_page

Message ID	20210721155355.173183-20-hch@lst.de (mailing list archive)
State	New, archived
Headers	show Return-Path: <SRS0=klwv=MN=lists.freedesktop.org=intel-gfx-bounces@kernel.org> DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F04F161241 From: Christoph Hellwig <hch@lst.de> To: Jani Nikula <jani.nikula@linux.intel.com>, Joonas Lahtinen <joonas.lahtinen@linux.intel.com>, Rodrigo Vivi <rodrigo.vivi@intel.com>, Zhenyu Wang <zhenyuw@linux.intel.com>, Zhi Wang <zhi.a.wang@intel.com> Date: Wed, 21 Jul 2021 17:53:53 +0200 Message-Id: <20210721155355.173183-20-hch@lst.de> In-Reply-To: <20210721155355.173183-1-hch@lst.de> References: <20210721155355.173183-1-hch@lst.de> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 19/21] drm/i915/gvt: devirtualize ->dma_{, un}map_guest_page Precedence: list Cc: intel-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" <intel-gfx-bounces@lists.freedesktop.org>
Series	[01/21] drm/i915/gvt: integrate into the main Makefile \| expand [01/21] drm/i915/gvt: integrate into the main Makefile [02/21] drm/i915/gvt: remove module refcounting in intel_gvt_{, un}register_hypervisor [03/21] drm/i915/gvt: remove enum hypervisor_type [04/21] drm/i915/gvt: move the gvt code into kvmgt.ko [05/21] drm/i915/gvt: remove intel_gvt_ops [06/21] drm/i915/gvt: remove the map_gfn_to_mfn and set_trap_area ops [07/21] drm/i915/gvt: remove the unused from_virt_to_mfn op [08/21] drm/i915/gvt: merge struct kvmgt_vdev into struct intel_vgpu [09/21] drm/i915/gvt: merge struct kvmgt_guest_info into strut intel_vgpu [10/21] drm/i915/gvt: remove vgpu->handle [11/21] drm/i915/gvt: devirtualize ->{read, write}_gpa [12/21] drm/i915/gvt: devirtualize ->{get, put}_vfio_device [13/21] drm/i915/gvt: devirtualize ->set_edid and ->set_opregion [14/21] drm/i915/gvt: devirtualize ->detach_vgpu [15/21] drm/i915/gvt: devirtualize ->inject_msi [16/21] drm/i915/gvt: devirtualize ->is_valid_gfn [17/21] drm/i915/gvt: devirtualize ->gfn_to_mfn [18/21] drm/i915/gvt: devirtualize ->{enable, disable}_page_track [19/21] drm/i915/gvt: devirtualize ->dma_{, un}map_guest_page [20/21] drm/i915/gvt: devirtualize dma_pin_guest_page [21/21] drm/i915/gvt: remove struct intel_gvt_mpt

diff --git a/drivers/gpu/drm/i915/gvt/dmabuf.c b/drivers/gpu/drm/i915/gvt/dmabuf.c index bc53a0c60b44..03d82f4f9aa2 100644 --- a/drivers/gpu/drm/i915/gvt/dmabuf.c +++ b/drivers/gpu/drm/i915/gvt/dmabuf.c @@ -48,12 +48,6 @@ static int vgpu_pin_dma_address(struct intel_vgpu *vgpu, return ret; } -static void vgpu_unpin_dma_address(struct intel_vgpu *vgpu, - dma_addr_t dma_addr) -{ - intel_gvt_hypervisor_dma_unmap_guest_page(vgpu, dma_addr); -} - static int vgpu_gem_get_pages( struct drm_i915_gem_object *obj) { @@ -108,7 +102,7 @@ static int vgpu_gem_get_pages( for_each_sg(st->sgl, sg, i, j) { dma_addr = sg_dma_address(sg); if (dma_addr) - vgpu_unpin_dma_address(vgpu, dma_addr); + intel_gvt_dma_unmap_guest_page(vgpu, dma_addr); } sg_free_table(st); kfree(st); @@ -130,7 +124,7 @@ static void vgpu_gem_put_pages(struct drm_i915_gem_object *obj, int i; for_each_sg(pages->sgl, sg, fb_info->size, i) - vgpu_unpin_dma_address(vgpu, + intel_gvt_dma_unmap_guest_page(vgpu, sg_dma_address(sg)); } diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c index 75782f59df8e..0ae28b7f5c07 100644 --- a/drivers/gpu/drm/i915/gvt/gtt.c +++ b/drivers/gpu/drm/i915/gvt/gtt.c @@ -1011,7 +1011,7 @@ static inline void ppgtt_invalidate_pte(struct intel_vgpu_ppgtt_spt *spt, if (!pfn || pfn == vgpu->gtt.scratch_pt[type].page_mfn) return; - intel_gvt_hypervisor_dma_unmap_guest_page(vgpu, pfn << PAGE_SHIFT); + intel_gvt_dma_unmap_guest_page(vgpu, pfn << PAGE_SHIFT); } static int ppgtt_invalidate_spt(struct intel_vgpu_ppgtt_spt *spt) @@ -1210,8 +1210,8 @@ static int split_2MB_gtt_entry(struct intel_vgpu *vgpu, return PTR_ERR(sub_spt); for_each_shadow_entry(sub_spt, &sub_se, sub_index) { - ret = intel_gvt_hypervisor_dma_map_guest_page(vgpu, - start_gfn + sub_index, PAGE_SIZE, &dma_addr); + ret = intel_gvt_dma_map_guest_page(vgpu, start_gfn + sub_index, + PAGE_SIZE, &dma_addr); if (ret) { ppgtt_invalidate_spt(spt); return ret; @@ -1256,8 +1256,8 @@ static int split_64KB_gtt_entry(struct intel_vgpu *vgpu, ops->set_64k_splited(&entry); for (i = 0; i < GTT_64K_PTE_STRIDE; i++) { - ret = intel_gvt_hypervisor_dma_map_guest_page(vgpu, - start_gfn + i, PAGE_SIZE, &dma_addr); + ret = intel_gvt_dma_map_guest_page(vgpu, start_gfn + i, + PAGE_SIZE, &dma_addr); if (ret) return ret; @@ -1311,8 +1311,7 @@ static int ppgtt_populate_shadow_entry(struct intel_vgpu *vgpu, } /* direct shadow */ - ret = intel_gvt_hypervisor_dma_map_guest_page(vgpu, gfn, page_size, - &dma_addr); + ret = intel_gvt_dma_map_guest_page(vgpu, gfn, page_size, &dma_addr); if (ret) return -ENXIO; @@ -2243,8 +2242,7 @@ static void ggtt_invalidate_pte(struct intel_vgpu *vgpu, pfn = pte_ops->get_pfn(entry); if (pfn != vgpu->gvt->gtt.scratch_mfn) - intel_gvt_hypervisor_dma_unmap_guest_page(vgpu, - pfn << PAGE_SHIFT); + intel_gvt_dma_unmap_guest_page(vgpu, pfn << PAGE_SHIFT); } static int emulate_ggtt_mmio_write(struct intel_vgpu *vgpu, unsigned int off, @@ -2335,8 +2333,8 @@ static int emulate_ggtt_mmio_write(struct intel_vgpu *vgpu, unsigned int off, goto out; } - ret = intel_gvt_hypervisor_dma_map_guest_page(vgpu, gfn, - PAGE_SIZE, &dma_addr); + ret = intel_gvt_dma_map_guest_page(vgpu, gfn, PAGE_SIZE, + &dma_addr); if (ret) { gvt_vgpu_err("fail to populate guest ggtt entry\n"); /* guest driver may read/write the entry when partial diff --git a/drivers/gpu/drm/i915/gvt/gvt.h b/drivers/gpu/drm/i915/gvt/gvt.h index e186ded7ec68..9d5a286e1269 100644 --- a/drivers/gpu/drm/i915/gvt/gvt.h +++ b/drivers/gpu/drm/i915/gvt/gvt.h @@ -766,6 +766,10 @@ void intel_gvt_debugfs_clean(struct intel_gvt *gvt); int intel_gvt_page_track_add(struct intel_vgpu *info, u64 gfn); int intel_gvt_page_track_remove(struct intel_vgpu *info, u64 gfn); +int intel_gvt_dma_map_guest_page(struct intel_vgpu *vgpu, unsigned long gfn, + unsigned long size, dma_addr_t *dma_addr); +void intel_gvt_dma_unmap_guest_page(struct intel_vgpu *vgpu, + dma_addr_t dma_addr); #include "trace.h" #include "mpt.h" diff --git a/drivers/gpu/drm/i915/gvt/hypercall.h b/drivers/gpu/drm/i915/gvt/hypercall.h index ded13a63ab66..ba03b3368a95 100644 --- a/drivers/gpu/drm/i915/gvt/hypercall.h +++ b/drivers/gpu/drm/i915/gvt/hypercall.h @@ -46,11 +46,6 @@ struct intel_gvt_mpt { int (*host_init)(struct device *dev, void *gvt); void (*host_exit)(struct device *dev, void *gvt); - int (*dma_map_guest_page)(struct intel_vgpu *vgpu, unsigned long gfn, - unsigned long size, dma_addr_t *dma_addr); - void (*dma_unmap_guest_page)(struct intel_vgpu *vgpu, - dma_addr_t dma_addr); - int (*dma_pin_guest_page)(struct intel_vgpu *vgpu, dma_addr_t dma_addr); }; diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c index 72e33332c412..8101c1485f12 100644 --- a/drivers/gpu/drm/i915/gvt/kvmgt.c +++ b/drivers/gpu/drm/i915/gvt/kvmgt.c @@ -1855,7 +1855,7 @@ void intel_vgpu_detach_regions(struct intel_vgpu *vgpu) vgpu->region = NULL; } -static int kvmgt_dma_map_guest_page(struct intel_vgpu *vgpu, unsigned long gfn, +int intel_gvt_dma_map_guest_page(struct intel_vgpu *vgpu, unsigned long gfn, unsigned long size, dma_addr_t *dma_addr) { struct gvt_dma *entry; @@ -1931,7 +1931,7 @@ static void __gvt_dma_release(struct kref *ref) __gvt_cache_remove_entry(entry->vgpu, entry); } -static void kvmgt_dma_unmap_guest_page(struct intel_vgpu *vgpu, +void intel_gvt_dma_unmap_guest_page(struct intel_vgpu *vgpu, dma_addr_t dma_addr) { struct gvt_dma *entry; @@ -1949,8 +1949,6 @@ static void kvmgt_dma_unmap_guest_page(struct intel_vgpu *vgpu, static const struct intel_gvt_mpt kvmgt_mpt = { .host_init = kvmgt_host_init, .host_exit = kvmgt_host_exit, - .dma_map_guest_page = kvmgt_dma_map_guest_page, - .dma_unmap_guest_page = kvmgt_dma_unmap_guest_page, .dma_pin_guest_page = kvmgt_dma_pin_guest_page, }; diff --git a/drivers/gpu/drm/i915/gvt/mpt.h b/drivers/gpu/drm/i915/gvt/mpt.h index d2723ac8bb04..26c1ee690f7e 100644 --- a/drivers/gpu/drm/i915/gvt/mpt.h +++ b/drivers/gpu/drm/i915/gvt/mpt.h @@ -71,35 +71,6 @@ static inline void intel_gvt_hypervisor_host_exit(struct device *dev, void *gvt) intel_gvt_host.mpt->host_exit(dev, gvt); } -/** - * intel_gvt_hypervisor_dma_map_guest_page - setup dma map for guest page - * @vgpu: a vGPU - * @gfn: guest pfn - * @size: page size - * @dma_addr: retrieve allocated dma addr - * - * Returns: - * 0 on success, negative error code if failed. - */ -static inline int intel_gvt_hypervisor_dma_map_guest_page( - struct intel_vgpu *vgpu, unsigned long gfn, unsigned long size, - dma_addr_t *dma_addr) -{ - return intel_gvt_host.mpt->dma_map_guest_page(vgpu, gfn, size, - dma_addr); -} - -/** - * intel_gvt_hypervisor_dma_unmap_guest_page - cancel dma map for guest page - * @vgpu: a vGPU - * @dma_addr: the mapped dma addr - */ -static inline void intel_gvt_hypervisor_dma_unmap_guest_page( - struct intel_vgpu *vgpu, dma_addr_t dma_addr) -{ - intel_gvt_host.mpt->dma_unmap_guest_page(vgpu, dma_addr); -} - /** * intel_gvt_hypervisor_dma_pin_guest_page - pin guest dma buf * @vgpu: a vGPU

[19/21] drm/i915/gvt: devirtualize ->dma_{, un}map_guest_page

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