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03f380178d
* Move Meson64 to 5.6.y * Move Meson64 U-boot to 2020.04 Tested on Odroid C2 * Merge, replace and update patches from Khadas branch
81 lines
2.2 KiB
Diff
81 lines
2.2 KiB
Diff
From cd070709d9920ca0d74391ece22be1ecb35bc32f Mon Sep 17 00:00:00 2001
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From: Qiang Yu <yuq825@gmail.com>
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Date: Thu, 16 Jan 2020 21:11:54 +0800
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Subject: [PATCH 002/101] FROMGIT: drm/lima: add lima_vm_map_bo
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For dynamically mapping added backup memory of lima_bo to vm.
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This is a preparation for adding heap buffer support.
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Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com>
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Tested-by: Andreas Baierl <ichgeh@imkreisrum.de>
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Signed-off-by: Qiang Yu <yuq825@gmail.com>
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Link: https://patchwork.freedesktop.org/patch/msgid/20200116131157.13346-3-yuq825@gmail.com
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---
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drivers/gpu/drm/lima/lima_vm.c | 42 ++++++++++++++++++++++++++++++++++
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drivers/gpu/drm/lima/lima_vm.h | 1 +
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2 files changed, 43 insertions(+)
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diff --git a/drivers/gpu/drm/lima/lima_vm.c b/drivers/gpu/drm/lima/lima_vm.c
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index 840e2350d872..2e513841de6c 100644
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--- a/drivers/gpu/drm/lima/lima_vm.c
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+++ b/drivers/gpu/drm/lima/lima_vm.c
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@@ -277,3 +277,45 @@ void lima_vm_print(struct lima_vm *vm)
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}
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}
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}
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+
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+int lima_vm_map_bo(struct lima_vm *vm, struct lima_bo *bo, int pageoff)
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+{
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+ struct lima_bo_va *bo_va;
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+ struct sg_dma_page_iter sg_iter;
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+ int offset = 0, err;
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+ u32 base;
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+
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+ mutex_lock(&bo->lock);
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+
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+ bo_va = lima_vm_bo_find(vm, bo);
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+ if (!bo_va) {
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+ err = -ENOENT;
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+ goto err_out0;
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+ }
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+
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+ mutex_lock(&vm->lock);
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+
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+ base = bo_va->node.start + (pageoff << PAGE_SHIFT);
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+ for_each_sg_dma_page(bo->base.sgt->sgl, &sg_iter,
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+ bo->base.sgt->nents, pageoff) {
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+ err = lima_vm_map_page(vm, sg_page_iter_dma_address(&sg_iter),
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+ base + offset);
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+ if (err)
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+ goto err_out1;
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+
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+ offset += PAGE_SIZE;
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+ }
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+
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+ mutex_unlock(&vm->lock);
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+
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+ mutex_unlock(&bo->lock);
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+ return 0;
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+
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+err_out1:
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+ if (offset)
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+ lima_vm_unmap_range(vm, base, base + offset - 1);
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+ mutex_unlock(&vm->lock);
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+err_out0:
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+ mutex_unlock(&bo->lock);
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+ return err;
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+}
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diff --git a/drivers/gpu/drm/lima/lima_vm.h b/drivers/gpu/drm/lima/lima_vm.h
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index e0bdedcf14dd..22aeec77d84d 100644
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--- a/drivers/gpu/drm/lima/lima_vm.h
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+++ b/drivers/gpu/drm/lima/lima_vm.h
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@@ -58,5 +58,6 @@ static inline void lima_vm_put(struct lima_vm *vm)
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}
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void lima_vm_print(struct lima_vm *vm);
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+int lima_vm_map_bo(struct lima_vm *vm, struct lima_bo *bo, int pageoff);
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#endif
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--
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2.17.1
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