| Message ID | 8b4a21e4f1b4d6da086371ee213c654b10fcf946.1597931876.git.robin.murphy@arm.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | Convert arch/arm to use iommu-dma | expand |
Hi Robin, On 20.08.2020 17:08, Robin Murphy wrote: > Now that arch/arm is wired up for default domains and iommu-dma, we can > consolidate the shared mapping code onto the generic IOMMU API version, > and retire the arch-specific implementation. > > Signed-off-by: Robin Murphy <robin.murphy@arm.com> > > --- > This is a cheeky revert of 07dc3678bacc ("drm/exynos: Fix cleanup of > IOMMU related objects"), plus removal of the remaining arm_iommu_* > references on top. I have one more suggestion to this patch. Please rename exynos_drm_private->mapping to exynos_drm_private->domain and change its type from "void *" to "struct iommu_domain *". The "void *" was there to support both old-ARM and ARM64 IOMMU/DMA-mapping frameworks, but now we can use the proper pointer types. > --- > drivers/gpu/drm/exynos/exynos5433_drm_decon.c | 5 +- > drivers/gpu/drm/exynos/exynos7_drm_decon.c | 5 +- > drivers/gpu/drm/exynos/exynos_drm_dma.c | 61 +++---------------- > drivers/gpu/drm/exynos/exynos_drm_drv.h | 6 +- > drivers/gpu/drm/exynos/exynos_drm_fimc.c | 5 +- > drivers/gpu/drm/exynos/exynos_drm_fimd.c | 5 +- > drivers/gpu/drm/exynos/exynos_drm_g2d.c | 5 +- > drivers/gpu/drm/exynos/exynos_drm_gsc.c | 5 +- > drivers/gpu/drm/exynos/exynos_drm_rotator.c | 5 +- > drivers/gpu/drm/exynos/exynos_drm_scaler.c | 6 +- > drivers/gpu/drm/exynos/exynos_mixer.c | 7 +-- > 11 files changed, 29 insertions(+), 86 deletions(-) > > diff --git a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c > index 1f79bc2a881e..8428ae12dfa5 100644 > --- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c > +++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c > @@ -55,7 +55,6 @@ static const char * const decon_clks_name[] = { > struct decon_context { > struct device *dev; > struct drm_device *drm_dev; > - void *dma_priv; > struct exynos_drm_crtc *crtc; > struct exynos_drm_plane planes[WINDOWS_NR]; > struct exynos_drm_plane_config configs[WINDOWS_NR]; > @@ -645,7 +644,7 @@ static int decon_bind(struct device *dev, struct device *master, void *data) > > decon_clear_channels(ctx->crtc); > > - return exynos_drm_register_dma(drm_dev, dev, &ctx->dma_priv); > + return exynos_drm_register_dma(drm_dev, dev); > } > > static void decon_unbind(struct device *dev, struct device *master, void *data) > @@ -655,7 +654,7 @@ static void decon_unbind(struct device *dev, struct device *master, void *data) > decon_atomic_disable(ctx->crtc); > > /* detach this sub driver from iommu mapping if supported. */ > - exynos_drm_unregister_dma(ctx->drm_dev, ctx->dev, &ctx->dma_priv); > + exynos_drm_unregister_dma(ctx->drm_dev, ctx->dev); > } > > static const struct component_ops decon_component_ops = { > diff --git a/drivers/gpu/drm/exynos/exynos7_drm_decon.c b/drivers/gpu/drm/exynos/exynos7_drm_decon.c > index f2d87a7445c7..e7b58097ccdc 100644 > --- a/drivers/gpu/drm/exynos/exynos7_drm_decon.c > +++ b/drivers/gpu/drm/exynos/exynos7_drm_decon.c > @@ -40,7 +40,6 @@ > struct decon_context { > struct device *dev; > struct drm_device *drm_dev; > - void *dma_priv; > struct exynos_drm_crtc *crtc; > struct exynos_drm_plane planes[WINDOWS_NR]; > struct exynos_drm_plane_config configs[WINDOWS_NR]; > @@ -128,13 +127,13 @@ static int decon_ctx_initialize(struct decon_context *ctx, > > decon_clear_channels(ctx->crtc); > > - return exynos_drm_register_dma(drm_dev, ctx->dev, &ctx->dma_priv); > + return exynos_drm_register_dma(drm_dev, ctx->dev); > } > > static void decon_ctx_remove(struct decon_context *ctx) > { > /* detach this sub driver from iommu mapping if supported. */ > - exynos_drm_unregister_dma(ctx->drm_dev, ctx->dev, &ctx->dma_priv); > + exynos_drm_unregister_dma(ctx->drm_dev, ctx->dev); > } > > static u32 decon_calc_clkdiv(struct decon_context *ctx, > diff --git a/drivers/gpu/drm/exynos/exynos_drm_dma.c b/drivers/gpu/drm/exynos/exynos_drm_dma.c > index 58b89ec11b0e..fd5f9bcf1857 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_dma.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_dma.c > @@ -14,19 +14,6 @@ > > #include "exynos_drm_drv.h" > > -#if defined(CONFIG_ARM_DMA_USE_IOMMU) > -#include <asm/dma-iommu.h> > -#else > -#define arm_iommu_create_mapping(...) ({ NULL; }) > -#define arm_iommu_attach_device(...) ({ -ENODEV; }) > -#define arm_iommu_release_mapping(...) ({ }) > -#define arm_iommu_detach_device(...) ({ }) > -#define to_dma_iommu_mapping(dev) NULL > -#endif > - > -#if !defined(CONFIG_IOMMU_DMA) > -#define iommu_dma_init_domain(...) ({ -EINVAL; }) > -#endif > > #define EXYNOS_DEV_ADDR_START 0x20000000 > #define EXYNOS_DEV_ADDR_SIZE 0x40000000 > @@ -58,7 +45,7 @@ static inline void clear_dma_max_seg_size(struct device *dev) > * mapping. > */ > static int drm_iommu_attach_device(struct drm_device *drm_dev, > - struct device *subdrv_dev, void **dma_priv) > + struct device *subdrv_dev) > { > struct exynos_drm_private *priv = drm_dev->dev_private; > int ret = 0; > @@ -73,22 +60,7 @@ static int drm_iommu_attach_device(struct drm_device *drm_dev, > if (ret) > return ret; > > - if (IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)) { > - /* > - * Keep the original DMA mapping of the sub-device and > - * restore it on Exynos DRM detach, otherwise the DMA > - * framework considers it as IOMMU-less during the next > - * probe (in case of deferred probe or modular build) > - */ > - *dma_priv = to_dma_iommu_mapping(subdrv_dev); > - if (*dma_priv) > - arm_iommu_detach_device(subdrv_dev); > - > - ret = arm_iommu_attach_device(subdrv_dev, priv->mapping); > - } else if (IS_ENABLED(CONFIG_IOMMU_DMA)) { > - ret = iommu_attach_device(priv->mapping, subdrv_dev); > - } > - > + ret = iommu_attach_device(priv->mapping, subdrv_dev); > if (ret) > clear_dma_max_seg_size(subdrv_dev); > > @@ -105,21 +77,15 @@ static int drm_iommu_attach_device(struct drm_device *drm_dev, > * mapping > */ > static void drm_iommu_detach_device(struct drm_device *drm_dev, > - struct device *subdrv_dev, void **dma_priv) > + struct device *subdrv_dev) > { > struct exynos_drm_private *priv = drm_dev->dev_private; > > - if (IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)) { > - arm_iommu_detach_device(subdrv_dev); > - arm_iommu_attach_device(subdrv_dev, *dma_priv); > - } else if (IS_ENABLED(CONFIG_IOMMU_DMA)) > - iommu_detach_device(priv->mapping, subdrv_dev); > - > + iommu_detach_device(priv->mapping, subdrv_dev); > clear_dma_max_seg_size(subdrv_dev); > } > > -int exynos_drm_register_dma(struct drm_device *drm, struct device *dev, > - void **dma_priv) > +int exynos_drm_register_dma(struct drm_device *drm, struct device *dev) > { > struct exynos_drm_private *priv = drm->dev_private; > > @@ -133,27 +99,20 @@ int exynos_drm_register_dma(struct drm_device *drm, struct device *dev, > return 0; > > if (!priv->mapping) { > - void *mapping; > - > - if (IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)) > - mapping = arm_iommu_create_mapping(&platform_bus_type, > - EXYNOS_DEV_ADDR_START, EXYNOS_DEV_ADDR_SIZE); > - else if (IS_ENABLED(CONFIG_IOMMU_DMA)) > - mapping = iommu_get_domain_for_dev(priv->dma_dev); > + void *mapping = iommu_get_domain_for_dev(priv->dma_dev); > > if (IS_ERR(mapping)) > return PTR_ERR(mapping); > priv->mapping = mapping; > } > > - return drm_iommu_attach_device(drm, dev, dma_priv); > + return drm_iommu_attach_device(drm, dev); > } > > -void exynos_drm_unregister_dma(struct drm_device *drm, struct device *dev, > - void **dma_priv) > +void exynos_drm_unregister_dma(struct drm_device *drm, struct device *dev) > { > if (IS_ENABLED(CONFIG_EXYNOS_IOMMU)) > - drm_iommu_detach_device(drm, dev, dma_priv); > + drm_iommu_detach_device(drm, dev); > } > > void exynos_drm_cleanup_dma(struct drm_device *drm) > @@ -163,7 +122,5 @@ void exynos_drm_cleanup_dma(struct drm_device *drm) > if (!IS_ENABLED(CONFIG_EXYNOS_IOMMU)) > return; > > - arm_iommu_release_mapping(priv->mapping); > - priv->mapping = NULL; > priv->dma_dev = NULL; > } > diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h > index 6ae9056e7a18..d4d21d8cfb90 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_drv.h > +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h > @@ -223,10 +223,8 @@ static inline bool is_drm_iommu_supported(struct drm_device *drm_dev) > return priv->mapping ? true : false; > } > > -int exynos_drm_register_dma(struct drm_device *drm, struct device *dev, > - void **dma_priv); > -void exynos_drm_unregister_dma(struct drm_device *drm, struct device *dev, > - void **dma_priv); > +int exynos_drm_register_dma(struct drm_device *drm, struct device *dev); > +void exynos_drm_unregister_dma(struct drm_device *drm, struct device *dev); > void exynos_drm_cleanup_dma(struct drm_device *drm); > > #ifdef CONFIG_DRM_EXYNOS_DPI > diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimc.c b/drivers/gpu/drm/exynos/exynos_drm_fimc.c > index 29ab8be8604c..8ea2e1d77802 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_fimc.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_fimc.c > @@ -97,7 +97,6 @@ struct fimc_scaler { > struct fimc_context { > struct exynos_drm_ipp ipp; > struct drm_device *drm_dev; > - void *dma_priv; > struct device *dev; > struct exynos_drm_ipp_task *task; > struct exynos_drm_ipp_formats *formats; > @@ -1134,7 +1133,7 @@ static int fimc_bind(struct device *dev, struct device *master, void *data) > > ctx->drm_dev = drm_dev; > ipp->drm_dev = drm_dev; > - exynos_drm_register_dma(drm_dev, dev, &ctx->dma_priv); > + exynos_drm_register_dma(drm_dev, dev); > > exynos_drm_ipp_register(dev, ipp, &ipp_funcs, > DRM_EXYNOS_IPP_CAP_CROP | DRM_EXYNOS_IPP_CAP_ROTATE | > @@ -1154,7 +1153,7 @@ static void fimc_unbind(struct device *dev, struct device *master, > struct exynos_drm_ipp *ipp = &ctx->ipp; > > exynos_drm_ipp_unregister(dev, ipp); > - exynos_drm_unregister_dma(drm_dev, dev, &ctx->dma_priv); > + exynos_drm_unregister_dma(drm_dev, dev); > } > > static const struct component_ops fimc_component_ops = { > diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c > index bb67cad8371f..21aec38702fc 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c > @@ -167,7 +167,6 @@ static struct fimd_driver_data exynos5420_fimd_driver_data = { > struct fimd_context { > struct device *dev; > struct drm_device *drm_dev; > - void *dma_priv; > struct exynos_drm_crtc *crtc; > struct exynos_drm_plane planes[WINDOWS_NR]; > struct exynos_drm_plane_config configs[WINDOWS_NR]; > @@ -1091,7 +1090,7 @@ static int fimd_bind(struct device *dev, struct device *master, void *data) > if (is_drm_iommu_supported(drm_dev)) > fimd_clear_channels(ctx->crtc); > > - return exynos_drm_register_dma(drm_dev, dev, &ctx->dma_priv); > + return exynos_drm_register_dma(drm_dev, dev); > } > > static void fimd_unbind(struct device *dev, struct device *master, > @@ -1101,7 +1100,7 @@ static void fimd_unbind(struct device *dev, struct device *master, > > fimd_atomic_disable(ctx->crtc); > > - exynos_drm_unregister_dma(ctx->drm_dev, ctx->dev, &ctx->dma_priv); > + exynos_drm_unregister_dma(ctx->drm_dev, ctx->dev); > > if (ctx->encoder) > exynos_dpi_remove(ctx->encoder); > diff --git a/drivers/gpu/drm/exynos/exynos_drm_g2d.c b/drivers/gpu/drm/exynos/exynos_drm_g2d.c > index 03be31427181..256ceafd9945 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_g2d.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_g2d.c > @@ -232,7 +232,6 @@ struct g2d_runqueue_node { > > struct g2d_data { > struct device *dev; > - void *dma_priv; > struct clk *gate_clk; > void __iomem *regs; > int irq; > @@ -1410,7 +1409,7 @@ static int g2d_bind(struct device *dev, struct device *master, void *data) > return ret; > } > > - ret = exynos_drm_register_dma(drm_dev, dev, &g2d->dma_priv); > + ret = exynos_drm_register_dma(drm_dev, dev); > if (ret < 0) { > dev_err(dev, "failed to enable iommu.\n"); > g2d_fini_cmdlist(g2d); > @@ -1435,7 +1434,7 @@ static void g2d_unbind(struct device *dev, struct device *master, void *data) > priv->g2d_dev = NULL; > > cancel_work_sync(&g2d->runqueue_work); > - exynos_drm_unregister_dma(g2d->drm_dev, dev, &g2d->dma_priv); > + exynos_drm_unregister_dma(g2d->drm_dev, dev); > } > > static const struct component_ops g2d_component_ops = { > diff --git a/drivers/gpu/drm/exynos/exynos_drm_gsc.c b/drivers/gpu/drm/exynos/exynos_drm_gsc.c > index 45e9aee8366a..88b6fcaa20be 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_gsc.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_gsc.c > @@ -97,7 +97,6 @@ struct gsc_scaler { > struct gsc_context { > struct exynos_drm_ipp ipp; > struct drm_device *drm_dev; > - void *dma_priv; > struct device *dev; > struct exynos_drm_ipp_task *task; > struct exynos_drm_ipp_formats *formats; > @@ -1170,7 +1169,7 @@ static int gsc_bind(struct device *dev, struct device *master, void *data) > > ctx->drm_dev = drm_dev; > ctx->drm_dev = drm_dev; > - exynos_drm_register_dma(drm_dev, dev, &ctx->dma_priv); > + exynos_drm_register_dma(drm_dev, dev); > > exynos_drm_ipp_register(dev, ipp, &ipp_funcs, > DRM_EXYNOS_IPP_CAP_CROP | DRM_EXYNOS_IPP_CAP_ROTATE | > @@ -1190,7 +1189,7 @@ static void gsc_unbind(struct device *dev, struct device *master, > struct exynos_drm_ipp *ipp = &ctx->ipp; > > exynos_drm_ipp_unregister(dev, ipp); > - exynos_drm_unregister_dma(drm_dev, dev, &ctx->dma_priv); > + exynos_drm_unregister_dma(drm_dev, dev); > } > > static const struct component_ops gsc_component_ops = { > diff --git a/drivers/gpu/drm/exynos/exynos_drm_rotator.c b/drivers/gpu/drm/exynos/exynos_drm_rotator.c > index 2d94afba031e..f22fa0d2621a 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_rotator.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_rotator.c > @@ -56,7 +56,6 @@ struct rot_variant { > struct rot_context { > struct exynos_drm_ipp ipp; > struct drm_device *drm_dev; > - void *dma_priv; > struct device *dev; > void __iomem *regs; > struct clk *clock; > @@ -244,7 +243,7 @@ static int rotator_bind(struct device *dev, struct device *master, void *data) > > rot->drm_dev = drm_dev; > ipp->drm_dev = drm_dev; > - exynos_drm_register_dma(drm_dev, dev, &rot->dma_priv); > + exynos_drm_register_dma(drm_dev, dev); > > exynos_drm_ipp_register(dev, ipp, &ipp_funcs, > DRM_EXYNOS_IPP_CAP_CROP | DRM_EXYNOS_IPP_CAP_ROTATE, > @@ -262,7 +261,7 @@ static void rotator_unbind(struct device *dev, struct device *master, > struct exynos_drm_ipp *ipp = &rot->ipp; > > exynos_drm_ipp_unregister(dev, ipp); > - exynos_drm_unregister_dma(rot->drm_dev, rot->dev, &rot->dma_priv); > + exynos_drm_unregister_dma(rot->drm_dev, rot->dev); > } > > static const struct component_ops rotator_component_ops = { > diff --git a/drivers/gpu/drm/exynos/exynos_drm_scaler.c b/drivers/gpu/drm/exynos/exynos_drm_scaler.c > index ce1857138f89..0c560566bd2e 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_scaler.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_scaler.c > @@ -39,7 +39,6 @@ struct scaler_data { > struct scaler_context { > struct exynos_drm_ipp ipp; > struct drm_device *drm_dev; > - void *dma_priv; > struct device *dev; > void __iomem *regs; > struct clk *clock[SCALER_MAX_CLK]; > @@ -451,7 +450,7 @@ static int scaler_bind(struct device *dev, struct device *master, void *data) > > scaler->drm_dev = drm_dev; > ipp->drm_dev = drm_dev; > - exynos_drm_register_dma(drm_dev, dev, &scaler->dma_priv); > + exynos_drm_register_dma(drm_dev, dev); > > exynos_drm_ipp_register(dev, ipp, &ipp_funcs, > DRM_EXYNOS_IPP_CAP_CROP | DRM_EXYNOS_IPP_CAP_ROTATE | > @@ -471,8 +470,7 @@ static void scaler_unbind(struct device *dev, struct device *master, > struct exynos_drm_ipp *ipp = &scaler->ipp; > > exynos_drm_ipp_unregister(dev, ipp); > - exynos_drm_unregister_dma(scaler->drm_dev, scaler->dev, > - &scaler->dma_priv); > + exynos_drm_unregister_dma(scaler->drm_dev, scaler->dev); > } > > static const struct component_ops scaler_component_ops = { > diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c > index af192e5a16ef..18972e605c5d 100644 > --- a/drivers/gpu/drm/exynos/exynos_mixer.c > +++ b/drivers/gpu/drm/exynos/exynos_mixer.c > @@ -94,7 +94,6 @@ struct mixer_context { > struct platform_device *pdev; > struct device *dev; > struct drm_device *drm_dev; > - void *dma_priv; > struct exynos_drm_crtc *crtc; > struct exynos_drm_plane planes[MIXER_WIN_NR]; > unsigned long flags; > @@ -895,14 +894,12 @@ static int mixer_initialize(struct mixer_context *mixer_ctx, > } > } > > - return exynos_drm_register_dma(drm_dev, mixer_ctx->dev, > - &mixer_ctx->dma_priv); > + return exynos_drm_register_dma(drm_dev, mixer_ctx->dev); > } > > static void mixer_ctx_remove(struct mixer_context *mixer_ctx) > { > - exynos_drm_unregister_dma(mixer_ctx->drm_dev, mixer_ctx->dev, > - &mixer_ctx->dma_priv); > + exynos_drm_unregister_dma(mixer_ctx->drm_dev, mixer_ctx->dev); > } > > static int mixer_enable_vblank(struct exynos_drm_crtc *crtc) Best regards
20. 8. 21. 오전 12:08에 Robin Murphy 이(가) 쓴 글: > Now that arch/arm is wired up for default domains and iommu-dma, we can > consolidate the shared mapping code onto the generic IOMMU API version, > and retire the arch-specific implementation. > > Signed-off-by: Robin Murphy <robin.murphy@arm.com> > > --- > This is a cheeky revert of 07dc3678bacc ("drm/exynos: Fix cleanup of > IOMMU related objects"), plus removal of the remaining arm_iommu_* > references on top. Thanks for cleanup. Acked-by: Inki Dae <inki.dae@samsung.com> Thanks, Inki Dae > --- > drivers/gpu/drm/exynos/exynos5433_drm_decon.c | 5 +- > drivers/gpu/drm/exynos/exynos7_drm_decon.c | 5 +- > drivers/gpu/drm/exynos/exynos_drm_dma.c | 61 +++---------------- > drivers/gpu/drm/exynos/exynos_drm_drv.h | 6 +- > drivers/gpu/drm/exynos/exynos_drm_fimc.c | 5 +- > drivers/gpu/drm/exynos/exynos_drm_fimd.c | 5 +- > drivers/gpu/drm/exynos/exynos_drm_g2d.c | 5 +- > drivers/gpu/drm/exynos/exynos_drm_gsc.c | 5 +- > drivers/gpu/drm/exynos/exynos_drm_rotator.c | 5 +- > drivers/gpu/drm/exynos/exynos_drm_scaler.c | 6 +- > drivers/gpu/drm/exynos/exynos_mixer.c | 7 +-- > 11 files changed, 29 insertions(+), 86 deletions(-) > > diff --git a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c > index 1f79bc2a881e..8428ae12dfa5 100644 > --- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c > +++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c > @@ -55,7 +55,6 @@ static const char * const decon_clks_name[] = { > struct decon_context { > struct device *dev; > struct drm_device *drm_dev; > - void *dma_priv; > struct exynos_drm_crtc *crtc; > struct exynos_drm_plane planes[WINDOWS_NR]; > struct exynos_drm_plane_config configs[WINDOWS_NR]; > @@ -645,7 +644,7 @@ static int decon_bind(struct device *dev, struct device *master, void *data) > > decon_clear_channels(ctx->crtc); > > - return exynos_drm_register_dma(drm_dev, dev, &ctx->dma_priv); > + return exynos_drm_register_dma(drm_dev, dev); > } > > static void decon_unbind(struct device *dev, struct device *master, void *data) > @@ -655,7 +654,7 @@ static void decon_unbind(struct device *dev, struct device *master, void *data) > decon_atomic_disable(ctx->crtc); > > /* detach this sub driver from iommu mapping if supported. */ > - exynos_drm_unregister_dma(ctx->drm_dev, ctx->dev, &ctx->dma_priv); > + exynos_drm_unregister_dma(ctx->drm_dev, ctx->dev); > } > > static const struct component_ops decon_component_ops = { > diff --git a/drivers/gpu/drm/exynos/exynos7_drm_decon.c b/drivers/gpu/drm/exynos/exynos7_drm_decon.c > index f2d87a7445c7..e7b58097ccdc 100644 > --- a/drivers/gpu/drm/exynos/exynos7_drm_decon.c > +++ b/drivers/gpu/drm/exynos/exynos7_drm_decon.c > @@ -40,7 +40,6 @@ > struct decon_context { > struct device *dev; > struct drm_device *drm_dev; > - void *dma_priv; > struct exynos_drm_crtc *crtc; > struct exynos_drm_plane planes[WINDOWS_NR]; > struct exynos_drm_plane_config configs[WINDOWS_NR]; > @@ -128,13 +127,13 @@ static int decon_ctx_initialize(struct decon_context *ctx, > > decon_clear_channels(ctx->crtc); > > - return exynos_drm_register_dma(drm_dev, ctx->dev, &ctx->dma_priv); > + return exynos_drm_register_dma(drm_dev, ctx->dev); > } > > static void decon_ctx_remove(struct decon_context *ctx) > { > /* detach this sub driver from iommu mapping if supported. */ > - exynos_drm_unregister_dma(ctx->drm_dev, ctx->dev, &ctx->dma_priv); > + exynos_drm_unregister_dma(ctx->drm_dev, ctx->dev); > } > > static u32 decon_calc_clkdiv(struct decon_context *ctx, > diff --git a/drivers/gpu/drm/exynos/exynos_drm_dma.c b/drivers/gpu/drm/exynos/exynos_drm_dma.c > index 58b89ec11b0e..fd5f9bcf1857 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_dma.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_dma.c > @@ -14,19 +14,6 @@ > > #include "exynos_drm_drv.h" > > -#if defined(CONFIG_ARM_DMA_USE_IOMMU) > -#include <asm/dma-iommu.h> > -#else > -#define arm_iommu_create_mapping(...) ({ NULL; }) > -#define arm_iommu_attach_device(...) ({ -ENODEV; }) > -#define arm_iommu_release_mapping(...) ({ }) > -#define arm_iommu_detach_device(...) ({ }) > -#define to_dma_iommu_mapping(dev) NULL > -#endif > - > -#if !defined(CONFIG_IOMMU_DMA) > -#define iommu_dma_init_domain(...) ({ -EINVAL; }) > -#endif > > #define EXYNOS_DEV_ADDR_START 0x20000000 > #define EXYNOS_DEV_ADDR_SIZE 0x40000000 > @@ -58,7 +45,7 @@ static inline void clear_dma_max_seg_size(struct device *dev) > * mapping. > */ > static int drm_iommu_attach_device(struct drm_device *drm_dev, > - struct device *subdrv_dev, void **dma_priv) > + struct device *subdrv_dev) > { > struct exynos_drm_private *priv = drm_dev->dev_private; > int ret = 0; > @@ -73,22 +60,7 @@ static int drm_iommu_attach_device(struct drm_device *drm_dev, > if (ret) > return ret; > > - if (IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)) { > - /* > - * Keep the original DMA mapping of the sub-device and > - * restore it on Exynos DRM detach, otherwise the DMA > - * framework considers it as IOMMU-less during the next > - * probe (in case of deferred probe or modular build) > - */ > - *dma_priv = to_dma_iommu_mapping(subdrv_dev); > - if (*dma_priv) > - arm_iommu_detach_device(subdrv_dev); > - > - ret = arm_iommu_attach_device(subdrv_dev, priv->mapping); > - } else if (IS_ENABLED(CONFIG_IOMMU_DMA)) { > - ret = iommu_attach_device(priv->mapping, subdrv_dev); > - } > - > + ret = iommu_attach_device(priv->mapping, subdrv_dev); > if (ret) > clear_dma_max_seg_size(subdrv_dev); > > @@ -105,21 +77,15 @@ static int drm_iommu_attach_device(struct drm_device *drm_dev, > * mapping > */ > static void drm_iommu_detach_device(struct drm_device *drm_dev, > - struct device *subdrv_dev, void **dma_priv) > + struct device *subdrv_dev) > { > struct exynos_drm_private *priv = drm_dev->dev_private; > > - if (IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)) { > - arm_iommu_detach_device(subdrv_dev); > - arm_iommu_attach_device(subdrv_dev, *dma_priv); > - } else if (IS_ENABLED(CONFIG_IOMMU_DMA)) > - iommu_detach_device(priv->mapping, subdrv_dev); > - > + iommu_detach_device(priv->mapping, subdrv_dev); > clear_dma_max_seg_size(subdrv_dev); > } > > -int exynos_drm_register_dma(struct drm_device *drm, struct device *dev, > - void **dma_priv) > +int exynos_drm_register_dma(struct drm_device *drm, struct device *dev) > { > struct exynos_drm_private *priv = drm->dev_private; > > @@ -133,27 +99,20 @@ int exynos_drm_register_dma(struct drm_device *drm, struct device *dev, > return 0; > > if (!priv->mapping) { > - void *mapping; > - > - if (IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)) > - mapping = arm_iommu_create_mapping(&platform_bus_type, > - EXYNOS_DEV_ADDR_START, EXYNOS_DEV_ADDR_SIZE); > - else if (IS_ENABLED(CONFIG_IOMMU_DMA)) > - mapping = iommu_get_domain_for_dev(priv->dma_dev); > + void *mapping = iommu_get_domain_for_dev(priv->dma_dev); > > if (IS_ERR(mapping)) > return PTR_ERR(mapping); > priv->mapping = mapping; > } > > - return drm_iommu_attach_device(drm, dev, dma_priv); > + return drm_iommu_attach_device(drm, dev); > } > > -void exynos_drm_unregister_dma(struct drm_device *drm, struct device *dev, > - void **dma_priv) > +void exynos_drm_unregister_dma(struct drm_device *drm, struct device *dev) > { > if (IS_ENABLED(CONFIG_EXYNOS_IOMMU)) > - drm_iommu_detach_device(drm, dev, dma_priv); > + drm_iommu_detach_device(drm, dev); > } > > void exynos_drm_cleanup_dma(struct drm_device *drm) > @@ -163,7 +122,5 @@ void exynos_drm_cleanup_dma(struct drm_device *drm) > if (!IS_ENABLED(CONFIG_EXYNOS_IOMMU)) > return; > > - arm_iommu_release_mapping(priv->mapping); > - priv->mapping = NULL; > priv->dma_dev = NULL; > } > diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h > index 6ae9056e7a18..d4d21d8cfb90 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_drv.h > +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h > @@ -223,10 +223,8 @@ static inline bool is_drm_iommu_supported(struct drm_device *drm_dev) > return priv->mapping ? true : false; > } > > -int exynos_drm_register_dma(struct drm_device *drm, struct device *dev, > - void **dma_priv); > -void exynos_drm_unregister_dma(struct drm_device *drm, struct device *dev, > - void **dma_priv); > +int exynos_drm_register_dma(struct drm_device *drm, struct device *dev); > +void exynos_drm_unregister_dma(struct drm_device *drm, struct device *dev); > void exynos_drm_cleanup_dma(struct drm_device *drm); > > #ifdef CONFIG_DRM_EXYNOS_DPI > diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimc.c b/drivers/gpu/drm/exynos/exynos_drm_fimc.c > index 29ab8be8604c..8ea2e1d77802 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_fimc.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_fimc.c > @@ -97,7 +97,6 @@ struct fimc_scaler { > struct fimc_context { > struct exynos_drm_ipp ipp; > struct drm_device *drm_dev; > - void *dma_priv; > struct device *dev; > struct exynos_drm_ipp_task *task; > struct exynos_drm_ipp_formats *formats; > @@ -1134,7 +1133,7 @@ static int fimc_bind(struct device *dev, struct device *master, void *data) > > ctx->drm_dev = drm_dev; > ipp->drm_dev = drm_dev; > - exynos_drm_register_dma(drm_dev, dev, &ctx->dma_priv); > + exynos_drm_register_dma(drm_dev, dev); > > exynos_drm_ipp_register(dev, ipp, &ipp_funcs, > DRM_EXYNOS_IPP_CAP_CROP | DRM_EXYNOS_IPP_CAP_ROTATE | > @@ -1154,7 +1153,7 @@ static void fimc_unbind(struct device *dev, struct device *master, > struct exynos_drm_ipp *ipp = &ctx->ipp; > > exynos_drm_ipp_unregister(dev, ipp); > - exynos_drm_unregister_dma(drm_dev, dev, &ctx->dma_priv); > + exynos_drm_unregister_dma(drm_dev, dev); > } > > static const struct component_ops fimc_component_ops = { > diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c > index bb67cad8371f..21aec38702fc 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c > @@ -167,7 +167,6 @@ static struct fimd_driver_data exynos5420_fimd_driver_data = { > struct fimd_context { > struct device *dev; > struct drm_device *drm_dev; > - void *dma_priv; > struct exynos_drm_crtc *crtc; > struct exynos_drm_plane planes[WINDOWS_NR]; > struct exynos_drm_plane_config configs[WINDOWS_NR]; > @@ -1091,7 +1090,7 @@ static int fimd_bind(struct device *dev, struct device *master, void *data) > if (is_drm_iommu_supported(drm_dev)) > fimd_clear_channels(ctx->crtc); > > - return exynos_drm_register_dma(drm_dev, dev, &ctx->dma_priv); > + return exynos_drm_register_dma(drm_dev, dev); > } > > static void fimd_unbind(struct device *dev, struct device *master, > @@ -1101,7 +1100,7 @@ static void fimd_unbind(struct device *dev, struct device *master, > > fimd_atomic_disable(ctx->crtc); > > - exynos_drm_unregister_dma(ctx->drm_dev, ctx->dev, &ctx->dma_priv); > + exynos_drm_unregister_dma(ctx->drm_dev, ctx->dev); > > if (ctx->encoder) > exynos_dpi_remove(ctx->encoder); > diff --git a/drivers/gpu/drm/exynos/exynos_drm_g2d.c b/drivers/gpu/drm/exynos/exynos_drm_g2d.c > index 03be31427181..256ceafd9945 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_g2d.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_g2d.c > @@ -232,7 +232,6 @@ struct g2d_runqueue_node { > > struct g2d_data { > struct device *dev; > - void *dma_priv; > struct clk *gate_clk; > void __iomem *regs; > int irq; > @@ -1410,7 +1409,7 @@ static int g2d_bind(struct device *dev, struct device *master, void *data) > return ret; > } > > - ret = exynos_drm_register_dma(drm_dev, dev, &g2d->dma_priv); > + ret = exynos_drm_register_dma(drm_dev, dev); > if (ret < 0) { > dev_err(dev, "failed to enable iommu.\n"); > g2d_fini_cmdlist(g2d); > @@ -1435,7 +1434,7 @@ static void g2d_unbind(struct device *dev, struct device *master, void *data) > priv->g2d_dev = NULL; > > cancel_work_sync(&g2d->runqueue_work); > - exynos_drm_unregister_dma(g2d->drm_dev, dev, &g2d->dma_priv); > + exynos_drm_unregister_dma(g2d->drm_dev, dev); > } > > static const struct component_ops g2d_component_ops = { > diff --git a/drivers/gpu/drm/exynos/exynos_drm_gsc.c b/drivers/gpu/drm/exynos/exynos_drm_gsc.c > index 45e9aee8366a..88b6fcaa20be 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_gsc.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_gsc.c > @@ -97,7 +97,6 @@ struct gsc_scaler { > struct gsc_context { > struct exynos_drm_ipp ipp; > struct drm_device *drm_dev; > - void *dma_priv; > struct device *dev; > struct exynos_drm_ipp_task *task; > struct exynos_drm_ipp_formats *formats; > @@ -1170,7 +1169,7 @@ static int gsc_bind(struct device *dev, struct device *master, void *data) > > ctx->drm_dev = drm_dev; > ctx->drm_dev = drm_dev; > - exynos_drm_register_dma(drm_dev, dev, &ctx->dma_priv); > + exynos_drm_register_dma(drm_dev, dev); > > exynos_drm_ipp_register(dev, ipp, &ipp_funcs, > DRM_EXYNOS_IPP_CAP_CROP | DRM_EXYNOS_IPP_CAP_ROTATE | > @@ -1190,7 +1189,7 @@ static void gsc_unbind(struct device *dev, struct device *master, > struct exynos_drm_ipp *ipp = &ctx->ipp; > > exynos_drm_ipp_unregister(dev, ipp); > - exynos_drm_unregister_dma(drm_dev, dev, &ctx->dma_priv); > + exynos_drm_unregister_dma(drm_dev, dev); > } > > static const struct component_ops gsc_component_ops = { > diff --git a/drivers/gpu/drm/exynos/exynos_drm_rotator.c b/drivers/gpu/drm/exynos/exynos_drm_rotator.c > index 2d94afba031e..f22fa0d2621a 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_rotator.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_rotator.c > @@ -56,7 +56,6 @@ struct rot_variant { > struct rot_context { > struct exynos_drm_ipp ipp; > struct drm_device *drm_dev; > - void *dma_priv; > struct device *dev; > void __iomem *regs; > struct clk *clock; > @@ -244,7 +243,7 @@ static int rotator_bind(struct device *dev, struct device *master, void *data) > > rot->drm_dev = drm_dev; > ipp->drm_dev = drm_dev; > - exynos_drm_register_dma(drm_dev, dev, &rot->dma_priv); > + exynos_drm_register_dma(drm_dev, dev); > > exynos_drm_ipp_register(dev, ipp, &ipp_funcs, > DRM_EXYNOS_IPP_CAP_CROP | DRM_EXYNOS_IPP_CAP_ROTATE, > @@ -262,7 +261,7 @@ static void rotator_unbind(struct device *dev, struct device *master, > struct exynos_drm_ipp *ipp = &rot->ipp; > > exynos_drm_ipp_unregister(dev, ipp); > - exynos_drm_unregister_dma(rot->drm_dev, rot->dev, &rot->dma_priv); > + exynos_drm_unregister_dma(rot->drm_dev, rot->dev); > } > > static const struct component_ops rotator_component_ops = { > diff --git a/drivers/gpu/drm/exynos/exynos_drm_scaler.c b/drivers/gpu/drm/exynos/exynos_drm_scaler.c > index ce1857138f89..0c560566bd2e 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_scaler.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_scaler.c > @@ -39,7 +39,6 @@ struct scaler_data { > struct scaler_context { > struct exynos_drm_ipp ipp; > struct drm_device *drm_dev; > - void *dma_priv; > struct device *dev; > void __iomem *regs; > struct clk *clock[SCALER_MAX_CLK]; > @@ -451,7 +450,7 @@ static int scaler_bind(struct device *dev, struct device *master, void *data) > > scaler->drm_dev = drm_dev; > ipp->drm_dev = drm_dev; > - exynos_drm_register_dma(drm_dev, dev, &scaler->dma_priv); > + exynos_drm_register_dma(drm_dev, dev); > > exynos_drm_ipp_register(dev, ipp, &ipp_funcs, > DRM_EXYNOS_IPP_CAP_CROP | DRM_EXYNOS_IPP_CAP_ROTATE | > @@ -471,8 +470,7 @@ static void scaler_unbind(struct device *dev, struct device *master, > struct exynos_drm_ipp *ipp = &scaler->ipp; > > exynos_drm_ipp_unregister(dev, ipp); > - exynos_drm_unregister_dma(scaler->drm_dev, scaler->dev, > - &scaler->dma_priv); > + exynos_drm_unregister_dma(scaler->drm_dev, scaler->dev); > } > > static const struct component_ops scaler_component_ops = { > diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c > index af192e5a16ef..18972e605c5d 100644 > --- a/drivers/gpu/drm/exynos/exynos_mixer.c > +++ b/drivers/gpu/drm/exynos/exynos_mixer.c > @@ -94,7 +94,6 @@ struct mixer_context { > struct platform_device *pdev; > struct device *dev; > struct drm_device *drm_dev; > - void *dma_priv; > struct exynos_drm_crtc *crtc; > struct exynos_drm_plane planes[MIXER_WIN_NR]; > unsigned long flags; > @@ -895,14 +894,12 @@ static int mixer_initialize(struct mixer_context *mixer_ctx, > } > } > > - return exynos_drm_register_dma(drm_dev, mixer_ctx->dev, > - &mixer_ctx->dma_priv); > + return exynos_drm_register_dma(drm_dev, mixer_ctx->dev); > } > > static void mixer_ctx_remove(struct mixer_context *mixer_ctx) > { > - exynos_drm_unregister_dma(mixer_ctx->drm_dev, mixer_ctx->dev, > - &mixer_ctx->dma_priv); > + exynos_drm_unregister_dma(mixer_ctx->drm_dev, mixer_ctx->dev); > } > > static int mixer_enable_vblank(struct exynos_drm_crtc *crtc) >
diff --git a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c index 1f79bc2a881e..8428ae12dfa5 100644 --- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c +++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c @@ -55,7 +55,6 @@ static const char * const decon_clks_name[] = { struct decon_context { struct device *dev; struct drm_device *drm_dev; - void *dma_priv; struct exynos_drm_crtc *crtc; struct exynos_drm_plane planes[WINDOWS_NR]; struct exynos_drm_plane_config configs[WINDOWS_NR]; @@ -645,7 +644,7 @@ static int decon_bind(struct device *dev, struct device *master, void *data) decon_clear_channels(ctx->crtc); - return exynos_drm_register_dma(drm_dev, dev, &ctx->dma_priv); + return exynos_drm_register_dma(drm_dev, dev); } static void decon_unbind(struct device *dev, struct device *master, void *data) @@ -655,7 +654,7 @@ static void decon_unbind(struct device *dev, struct device *master, void *data) decon_atomic_disable(ctx->crtc); /* detach this sub driver from iommu mapping if supported. */ - exynos_drm_unregister_dma(ctx->drm_dev, ctx->dev, &ctx->dma_priv); + exynos_drm_unregister_dma(ctx->drm_dev, ctx->dev); } static const struct component_ops decon_component_ops = { diff --git a/drivers/gpu/drm/exynos/exynos7_drm_decon.c b/drivers/gpu/drm/exynos/exynos7_drm_decon.c index f2d87a7445c7..e7b58097ccdc 100644 --- a/drivers/gpu/drm/exynos/exynos7_drm_decon.c +++ b/drivers/gpu/drm/exynos/exynos7_drm_decon.c @@ -40,7 +40,6 @@ struct decon_context { struct device *dev; struct drm_device *drm_dev; - void *dma_priv; struct exynos_drm_crtc *crtc; struct exynos_drm_plane planes[WINDOWS_NR]; struct exynos_drm_plane_config configs[WINDOWS_NR]; @@ -128,13 +127,13 @@ static int decon_ctx_initialize(struct decon_context *ctx, decon_clear_channels(ctx->crtc); - return exynos_drm_register_dma(drm_dev, ctx->dev, &ctx->dma_priv); + return exynos_drm_register_dma(drm_dev, ctx->dev); } static void decon_ctx_remove(struct decon_context *ctx) { /* detach this sub driver from iommu mapping if supported. */ - exynos_drm_unregister_dma(ctx->drm_dev, ctx->dev, &ctx->dma_priv); + exynos_drm_unregister_dma(ctx->drm_dev, ctx->dev); } static u32 decon_calc_clkdiv(struct decon_context *ctx, diff --git a/drivers/gpu/drm/exynos/exynos_drm_dma.c b/drivers/gpu/drm/exynos/exynos_drm_dma.c index 58b89ec11b0e..fd5f9bcf1857 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dma.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dma.c @@ -14,19 +14,6 @@ #include "exynos_drm_drv.h" -#if defined(CONFIG_ARM_DMA_USE_IOMMU) -#include <asm/dma-iommu.h> -#else -#define arm_iommu_create_mapping(...) ({ NULL; }) -#define arm_iommu_attach_device(...) ({ -ENODEV; }) -#define arm_iommu_release_mapping(...) ({ }) -#define arm_iommu_detach_device(...) ({ }) -#define to_dma_iommu_mapping(dev) NULL -#endif - -#if !defined(CONFIG_IOMMU_DMA) -#define iommu_dma_init_domain(...) ({ -EINVAL; }) -#endif #define EXYNOS_DEV_ADDR_START 0x20000000 #define EXYNOS_DEV_ADDR_SIZE 0x40000000 @@ -58,7 +45,7 @@ static inline void clear_dma_max_seg_size(struct device *dev) * mapping. */ static int drm_iommu_attach_device(struct drm_device *drm_dev, - struct device *subdrv_dev, void **dma_priv) + struct device *subdrv_dev) { struct exynos_drm_private *priv = drm_dev->dev_private; int ret = 0; @@ -73,22 +60,7 @@ static int drm_iommu_attach_device(struct drm_device *drm_dev, if (ret) return ret; - if (IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)) { - /* - * Keep the original DMA mapping of the sub-device and - * restore it on Exynos DRM detach, otherwise the DMA - * framework considers it as IOMMU-less during the next - * probe (in case of deferred probe or modular build) - */ - *dma_priv = to_dma_iommu_mapping(subdrv_dev); - if (*dma_priv) - arm_iommu_detach_device(subdrv_dev); - - ret = arm_iommu_attach_device(subdrv_dev, priv->mapping); - } else if (IS_ENABLED(CONFIG_IOMMU_DMA)) { - ret = iommu_attach_device(priv->mapping, subdrv_dev); - } - + ret = iommu_attach_device(priv->mapping, subdrv_dev); if (ret) clear_dma_max_seg_size(subdrv_dev); @@ -105,21 +77,15 @@ static int drm_iommu_attach_device(struct drm_device *drm_dev, * mapping */ static void drm_iommu_detach_device(struct drm_device *drm_dev, - struct device *subdrv_dev, void **dma_priv) + struct device *subdrv_dev) { struct exynos_drm_private *priv = drm_dev->dev_private; - if (IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)) { - arm_iommu_detach_device(subdrv_dev); - arm_iommu_attach_device(subdrv_dev, *dma_priv); - } else if (IS_ENABLED(CONFIG_IOMMU_DMA)) - iommu_detach_device(priv->mapping, subdrv_dev); - + iommu_detach_device(priv->mapping, subdrv_dev); clear_dma_max_seg_size(subdrv_dev); } -int exynos_drm_register_dma(struct drm_device *drm, struct device *dev, - void **dma_priv) +int exynos_drm_register_dma(struct drm_device *drm, struct device *dev) { struct exynos_drm_private *priv = drm->dev_private; @@ -133,27 +99,20 @@ int exynos_drm_register_dma(struct drm_device *drm, struct device *dev, return 0; if (!priv->mapping) { - void *mapping; - - if (IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)) - mapping = arm_iommu_create_mapping(&platform_bus_type, - EXYNOS_DEV_ADDR_START, EXYNOS_DEV_ADDR_SIZE); - else if (IS_ENABLED(CONFIG_IOMMU_DMA)) - mapping = iommu_get_domain_for_dev(priv->dma_dev); + void *mapping = iommu_get_domain_for_dev(priv->dma_dev); if (IS_ERR(mapping)) return PTR_ERR(mapping); priv->mapping = mapping; } - return drm_iommu_attach_device(drm, dev, dma_priv); + return drm_iommu_attach_device(drm, dev); } -void exynos_drm_unregister_dma(struct drm_device *drm, struct device *dev, - void **dma_priv) +void exynos_drm_unregister_dma(struct drm_device *drm, struct device *dev) { if (IS_ENABLED(CONFIG_EXYNOS_IOMMU)) - drm_iommu_detach_device(drm, dev, dma_priv); + drm_iommu_detach_device(drm, dev); } void exynos_drm_cleanup_dma(struct drm_device *drm) @@ -163,7 +122,5 @@ void exynos_drm_cleanup_dma(struct drm_device *drm) if (!IS_ENABLED(CONFIG_EXYNOS_IOMMU)) return; - arm_iommu_release_mapping(priv->mapping); - priv->mapping = NULL; priv->dma_dev = NULL; } diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h index 6ae9056e7a18..d4d21d8cfb90 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_drv.h +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h @@ -223,10 +223,8 @@ static inline bool is_drm_iommu_supported(struct drm_device *drm_dev) return priv->mapping ? true : false; } -int exynos_drm_register_dma(struct drm_device *drm, struct device *dev, - void **dma_priv); -void exynos_drm_unregister_dma(struct drm_device *drm, struct device *dev, - void **dma_priv); +int exynos_drm_register_dma(struct drm_device *drm, struct device *dev); +void exynos_drm_unregister_dma(struct drm_device *drm, struct device *dev); void exynos_drm_cleanup_dma(struct drm_device *drm); #ifdef CONFIG_DRM_EXYNOS_DPI diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimc.c b/drivers/gpu/drm/exynos/exynos_drm_fimc.c index 29ab8be8604c..8ea2e1d77802 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fimc.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fimc.c @@ -97,7 +97,6 @@ struct fimc_scaler { struct fimc_context { struct exynos_drm_ipp ipp; struct drm_device *drm_dev; - void *dma_priv; struct device *dev; struct exynos_drm_ipp_task *task; struct exynos_drm_ipp_formats *formats; @@ -1134,7 +1133,7 @@ static int fimc_bind(struct device *dev, struct device *master, void *data) ctx->drm_dev = drm_dev; ipp->drm_dev = drm_dev; - exynos_drm_register_dma(drm_dev, dev, &ctx->dma_priv); + exynos_drm_register_dma(drm_dev, dev); exynos_drm_ipp_register(dev, ipp, &ipp_funcs, DRM_EXYNOS_IPP_CAP_CROP | DRM_EXYNOS_IPP_CAP_ROTATE | @@ -1154,7 +1153,7 @@ static void fimc_unbind(struct device *dev, struct device *master, struct exynos_drm_ipp *ipp = &ctx->ipp; exynos_drm_ipp_unregister(dev, ipp); - exynos_drm_unregister_dma(drm_dev, dev, &ctx->dma_priv); + exynos_drm_unregister_dma(drm_dev, dev); } static const struct component_ops fimc_component_ops = { diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c index bb67cad8371f..21aec38702fc 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c @@ -167,7 +167,6 @@ static struct fimd_driver_data exynos5420_fimd_driver_data = { struct fimd_context { struct device *dev; struct drm_device *drm_dev; - void *dma_priv; struct exynos_drm_crtc *crtc; struct exynos_drm_plane planes[WINDOWS_NR]; struct exynos_drm_plane_config configs[WINDOWS_NR]; @@ -1091,7 +1090,7 @@ static int fimd_bind(struct device *dev, struct device *master, void *data) if (is_drm_iommu_supported(drm_dev)) fimd_clear_channels(ctx->crtc); - return exynos_drm_register_dma(drm_dev, dev, &ctx->dma_priv); + return exynos_drm_register_dma(drm_dev, dev); } static void fimd_unbind(struct device *dev, struct device *master, @@ -1101,7 +1100,7 @@ static void fimd_unbind(struct device *dev, struct device *master, fimd_atomic_disable(ctx->crtc); - exynos_drm_unregister_dma(ctx->drm_dev, ctx->dev, &ctx->dma_priv); + exynos_drm_unregister_dma(ctx->drm_dev, ctx->dev); if (ctx->encoder) exynos_dpi_remove(ctx->encoder); diff --git a/drivers/gpu/drm/exynos/exynos_drm_g2d.c b/drivers/gpu/drm/exynos/exynos_drm_g2d.c index 03be31427181..256ceafd9945 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_g2d.c +++ b/drivers/gpu/drm/exynos/exynos_drm_g2d.c @@ -232,7 +232,6 @@ struct g2d_runqueue_node { struct g2d_data { struct device *dev; - void *dma_priv; struct clk *gate_clk; void __iomem *regs; int irq; @@ -1410,7 +1409,7 @@ static int g2d_bind(struct device *dev, struct device *master, void *data) return ret; } - ret = exynos_drm_register_dma(drm_dev, dev, &g2d->dma_priv); + ret = exynos_drm_register_dma(drm_dev, dev); if (ret < 0) { dev_err(dev, "failed to enable iommu.\n"); g2d_fini_cmdlist(g2d); @@ -1435,7 +1434,7 @@ static void g2d_unbind(struct device *dev, struct device *master, void *data) priv->g2d_dev = NULL; cancel_work_sync(&g2d->runqueue_work); - exynos_drm_unregister_dma(g2d->drm_dev, dev, &g2d->dma_priv); + exynos_drm_unregister_dma(g2d->drm_dev, dev); } static const struct component_ops g2d_component_ops = { diff --git a/drivers/gpu/drm/exynos/exynos_drm_gsc.c b/drivers/gpu/drm/exynos/exynos_drm_gsc.c index 45e9aee8366a..88b6fcaa20be 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_gsc.c +++ b/drivers/gpu/drm/exynos/exynos_drm_gsc.c @@ -97,7 +97,6 @@ struct gsc_scaler { struct gsc_context { struct exynos_drm_ipp ipp; struct drm_device *drm_dev; - void *dma_priv; struct device *dev; struct exynos_drm_ipp_task *task; struct exynos_drm_ipp_formats *formats; @@ -1170,7 +1169,7 @@ static int gsc_bind(struct device *dev, struct device *master, void *data) ctx->drm_dev = drm_dev; ctx->drm_dev = drm_dev; - exynos_drm_register_dma(drm_dev, dev, &ctx->dma_priv); + exynos_drm_register_dma(drm_dev, dev); exynos_drm_ipp_register(dev, ipp, &ipp_funcs, DRM_EXYNOS_IPP_CAP_CROP | DRM_EXYNOS_IPP_CAP_ROTATE | @@ -1190,7 +1189,7 @@ static void gsc_unbind(struct device *dev, struct device *master, struct exynos_drm_ipp *ipp = &ctx->ipp; exynos_drm_ipp_unregister(dev, ipp); - exynos_drm_unregister_dma(drm_dev, dev, &ctx->dma_priv); + exynos_drm_unregister_dma(drm_dev, dev); } static const struct component_ops gsc_component_ops = { diff --git a/drivers/gpu/drm/exynos/exynos_drm_rotator.c b/drivers/gpu/drm/exynos/exynos_drm_rotator.c index 2d94afba031e..f22fa0d2621a 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_rotator.c +++ b/drivers/gpu/drm/exynos/exynos_drm_rotator.c @@ -56,7 +56,6 @@ struct rot_variant { struct rot_context { struct exynos_drm_ipp ipp; struct drm_device *drm_dev; - void *dma_priv; struct device *dev; void __iomem *regs; struct clk *clock; @@ -244,7 +243,7 @@ static int rotator_bind(struct device *dev, struct device *master, void *data) rot->drm_dev = drm_dev; ipp->drm_dev = drm_dev; - exynos_drm_register_dma(drm_dev, dev, &rot->dma_priv); + exynos_drm_register_dma(drm_dev, dev); exynos_drm_ipp_register(dev, ipp, &ipp_funcs, DRM_EXYNOS_IPP_CAP_CROP | DRM_EXYNOS_IPP_CAP_ROTATE, @@ -262,7 +261,7 @@ static void rotator_unbind(struct device *dev, struct device *master, struct exynos_drm_ipp *ipp = &rot->ipp; exynos_drm_ipp_unregister(dev, ipp); - exynos_drm_unregister_dma(rot->drm_dev, rot->dev, &rot->dma_priv); + exynos_drm_unregister_dma(rot->drm_dev, rot->dev); } static const struct component_ops rotator_component_ops = { diff --git a/drivers/gpu/drm/exynos/exynos_drm_scaler.c b/drivers/gpu/drm/exynos/exynos_drm_scaler.c index ce1857138f89..0c560566bd2e 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_scaler.c +++ b/drivers/gpu/drm/exynos/exynos_drm_scaler.c @@ -39,7 +39,6 @@ struct scaler_data { struct scaler_context { struct exynos_drm_ipp ipp; struct drm_device *drm_dev; - void *dma_priv; struct device *dev; void __iomem *regs; struct clk *clock[SCALER_MAX_CLK]; @@ -451,7 +450,7 @@ static int scaler_bind(struct device *dev, struct device *master, void *data) scaler->drm_dev = drm_dev; ipp->drm_dev = drm_dev; - exynos_drm_register_dma(drm_dev, dev, &scaler->dma_priv); + exynos_drm_register_dma(drm_dev, dev); exynos_drm_ipp_register(dev, ipp, &ipp_funcs, DRM_EXYNOS_IPP_CAP_CROP | DRM_EXYNOS_IPP_CAP_ROTATE | @@ -471,8 +470,7 @@ static void scaler_unbind(struct device *dev, struct device *master, struct exynos_drm_ipp *ipp = &scaler->ipp; exynos_drm_ipp_unregister(dev, ipp); - exynos_drm_unregister_dma(scaler->drm_dev, scaler->dev, - &scaler->dma_priv); + exynos_drm_unregister_dma(scaler->drm_dev, scaler->dev); } static const struct component_ops scaler_component_ops = { diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c index af192e5a16ef..18972e605c5d 100644 --- a/drivers/gpu/drm/exynos/exynos_mixer.c +++ b/drivers/gpu/drm/exynos/exynos_mixer.c @@ -94,7 +94,6 @@ struct mixer_context { struct platform_device *pdev; struct device *dev; struct drm_device *drm_dev; - void *dma_priv; struct exynos_drm_crtc *crtc; struct exynos_drm_plane planes[MIXER_WIN_NR]; unsigned long flags; @@ -895,14 +894,12 @@ static int mixer_initialize(struct mixer_context *mixer_ctx, } } - return exynos_drm_register_dma(drm_dev, mixer_ctx->dev, - &mixer_ctx->dma_priv); + return exynos_drm_register_dma(drm_dev, mixer_ctx->dev); } static void mixer_ctx_remove(struct mixer_context *mixer_ctx) { - exynos_drm_unregister_dma(mixer_ctx->drm_dev, mixer_ctx->dev, - &mixer_ctx->dma_priv); + exynos_drm_unregister_dma(mixer_ctx->drm_dev, mixer_ctx->dev); } static int mixer_enable_vblank(struct exynos_drm_crtc *crtc)
Now that arch/arm is wired up for default domains and iommu-dma, we can consolidate the shared mapping code onto the generic IOMMU API version, and retire the arch-specific implementation. Signed-off-by: Robin Murphy <robin.murphy@arm.com> --- This is a cheeky revert of 07dc3678bacc ("drm/exynos: Fix cleanup of IOMMU related objects"), plus removal of the remaining arm_iommu_* references on top. --- drivers/gpu/drm/exynos/exynos5433_drm_decon.c | 5 +- drivers/gpu/drm/exynos/exynos7_drm_decon.c | 5 +- drivers/gpu/drm/exynos/exynos_drm_dma.c | 61 +++---------------- drivers/gpu/drm/exynos/exynos_drm_drv.h | 6 +- drivers/gpu/drm/exynos/exynos_drm_fimc.c | 5 +- drivers/gpu/drm/exynos/exynos_drm_fimd.c | 5 +- drivers/gpu/drm/exynos/exynos_drm_g2d.c | 5 +- drivers/gpu/drm/exynos/exynos_drm_gsc.c | 5 +- drivers/gpu/drm/exynos/exynos_drm_rotator.c | 5 +- drivers/gpu/drm/exynos/exynos_drm_scaler.c | 6 +- drivers/gpu/drm/exynos/exynos_mixer.c | 7 +-- 11 files changed, 29 insertions(+), 86 deletions(-)