From 8c2d8ed95f496dacbd6a06fdfe0ebb9a704299b4 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Fri, 17 Jun 2016 09:25:22 +0100 Subject: drm/msm: Remove redundant calls to drm_connector_register_all() Up to now, the recommendation was for drivers to call drm_dev_register() followed by drm_connector_register_all(). Now that drm_connector_register() is safe against multiple invocations, we can move drm_connector_register_all() to drm_dev_register() and not suffer from any backwards compatibility issues with drivers not following the more rigorous init ordering. Signed-off-by: Chris Wilson Cc: Daniel Vetter Cc: Rob Clark Cc: David Airlie Cc: dri-devel@lists.freedesktop.org Cc: linux-arm-msm@vger.kernel.org Cc: freedreno@lists.freedesktop.org Tested-by: Archit Taneja Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/1466151923-1572-7-git-send-email-chris@chris-wilson.co.uk --- drivers/gpu/drm/msm/msm_drv.c | 8 -------- 1 file changed, 8 deletions(-) (limited to 'drivers/gpu/drm/msm/msm_drv.c') diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 9c654092ef78..568fcc328f27 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -197,8 +197,6 @@ static int msm_drm_uninit(struct device *dev) drm_kms_helper_poll_fini(ddev); - drm_connector_unregister_all(ddev); - drm_dev_unregister(ddev); #ifdef CONFIG_DRM_FBDEV_EMULATION @@ -431,12 +429,6 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv) if (ret) goto fail; - ret = drm_connector_register_all(ddev); - if (ret) { - dev_err(dev, "failed to register connectors\n"); - goto fail; - } - drm_mode_config_reset(ddev); #ifdef CONFIG_DRM_FBDEV_EMULATION -- cgit v1.2.3 From a325725633c26aa66ab940f762a6b0778edf76c0 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Tue, 21 Jun 2016 14:08:33 +0200 Subject: drm: Lobotomize set_busid nonsense for !pci drivers We already have a fallback in place to fill out the unique from dev->unique, which is set to something reasonable in drm_dev_alloc. Which means we only need to have a special set_busid for pci devices, to be able to care the backwards compat code for drm 1.1 around, which libdrm still needs. While developing and testing this patch things blew up in really interesting ways, and the code is rather confusing in naming things between the kernel code, ioctl #defines and libdrm. For the next brave dragon slayer, document all this madness properly in the userspace interface section of gpu.tmpl. v2: Make drm_dev_set_unique static and update kerneldoc. v3: Entire rewrite, plus document what's going on for posterity in the gpu docbook uapi section. v4: Drop accidental amdgpu hunk (Emil). v5: Drop accidental omapdrm vblank counter change (Emil). v6: Rebase on top of the sphinx conversion. Cc: Gustavo Padovan Cc: Emil Velikov Tested-by: Gustavo Padovan (virt_gpu) Reviewed-by: Emil Velikov Signed-off-by: Daniel Vetter --- Documentation/gpu/drm-uapi.rst | 6 +++ drivers/gpu/drm/armada/armada_drv.c | 1 - drivers/gpu/drm/drm_ioctl.c | 58 +++++++++++++++++++++++++ drivers/gpu/drm/drm_platform.c | 18 -------- drivers/gpu/drm/etnaviv/etnaviv_drv.c | 1 - drivers/gpu/drm/exynos/exynos_drm_drv.c | 1 - drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c | 1 - drivers/gpu/drm/imx/imx-drm-core.c | 1 - drivers/gpu/drm/msm/msm_drv.c | 1 - drivers/gpu/drm/nouveau/nouveau_drm.c | 1 - drivers/gpu/drm/omapdrm/omap_drv.c | 1 - drivers/gpu/drm/shmobile/shmob_drm_drv.c | 1 - drivers/gpu/drm/tilcdc/tilcdc_drv.c | 1 - drivers/gpu/drm/virtio/virtgpu_drm_bus.c | 10 ----- drivers/gpu/drm/virtio/virtgpu_drv.c | 1 - drivers/gpu/drm/virtio/virtgpu_drv.h | 1 - include/drm/drmP.h | 1 - 17 files changed, 64 insertions(+), 41 deletions(-) (limited to 'drivers/gpu/drm/msm/msm_drv.c') diff --git a/Documentation/gpu/drm-uapi.rst b/Documentation/gpu/drm-uapi.rst index 6da1e77e55fa..a1c6f0103bc4 100644 --- a/Documentation/gpu/drm-uapi.rst +++ b/Documentation/gpu/drm-uapi.rst @@ -14,6 +14,12 @@ management, and output management. Cover generic ioctls and sysfs layout here. We only need high-level info, since man pages should cover the rest. +libdrm Device Lookup +==================== + +.. kernel-doc:: drivers/gpu/drm/drm_ioctl.c + :doc: getunique and setversion story + Render nodes ============ diff --git a/drivers/gpu/drm/armada/armada_drv.c b/drivers/gpu/drm/armada/armada_drv.c index cb21c0b6374a..f5ebdd681445 100644 --- a/drivers/gpu/drm/armada/armada_drv.c +++ b/drivers/gpu/drm/armada/armada_drv.c @@ -189,7 +189,6 @@ static struct drm_driver armada_drm_driver = { .load = armada_drm_load, .lastclose = armada_drm_lastclose, .unload = armada_drm_unload, - .set_busid = drm_platform_set_busid, .get_vblank_counter = drm_vblank_no_hw_counter, .enable_vblank = armada_drm_enable_vblank, .disable_vblank = armada_drm_disable_vblank, diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c index 1fa7619face3..ffd6a2795230 100644 --- a/drivers/gpu/drm/drm_ioctl.c +++ b/drivers/gpu/drm/drm_ioctl.c @@ -37,6 +37,64 @@ #include #include +/** + * DOC: getunique and setversion story + * + * BEWARE THE DRAGONS! MIND THE TRAPDOORS! + * + * In an attempt to warn anyone else who's trying to figure out what's going + * on here, I'll try to summarize the story. First things first, let's clear up + * the names, because the kernel internals, libdrm and the ioctls are all named + * differently: + * + * - GET_UNIQUE ioctl, implemented by drm_getunique is wrapped up in libdrm + * through the drmGetBusid function. + * - The libdrm drmSetBusid function is backed by the SET_UNIQUE ioctl. All + * that code is nerved in the kernel with drm_invalid_op(). + * - The internal set_busid kernel functions and driver callbacks are + * exclusively use by the SET_VERSION ioctl, because only drm 1.0 (which is + * nerved) allowed userspace to set the busid through the above ioctl. + * - Other ioctls and functions involved are named consistently. + * + * For anyone wondering what's the difference between drm 1.1 and 1.4: Correctly + * handling pci domains in the busid on ppc. Doing this correctly was only + * implemented in libdrm in 2010, hence can't be nerved yet. No one knows what's + * special with drm 1.2 and 1.3. + * + * Now the actual horror story of how device lookup in drm works. At large, + * there's 2 different ways, either by busid, or by device driver name. + * + * Opening by busid is fairly simple: + * + * 1. First call SET_VERSION to make sure pci domains are handled properly. As a + * side-effect this fills out the unique name in the master structure. + * 2. Call GET_UNIQUE to read out the unique name from the master structure, + * which matches the busid thanks to step 1. If it doesn't, proceed to try + * the next device node. + * + * Opening by name is slightly different: + * + * 1. Directly call VERSION to get the version and to match against the driver + * name returned by that ioctl. Note that SET_VERSION is not called, which + * means the the unique name for the master node just opening is _not_ filled + * out. This despite that with current drm device nodes are always bound to + * one device, and can't be runtime assigned like with drm 1.0. + * 2. Match driver name. If it mismatches, proceed to the next device node. + * 3. Call GET_UNIQUE, and check whether the unique name has length zero (by + * checking that the first byte in the string is 0). If that's not the case + * libdrm skips and proceeds to the next device node. Probably this is just + * copypasta from drm 1.0 times where a set unique name meant that the driver + * was in use already, but that's just conjecture. + * + * Long story short: To keep the open by name logic working, GET_UNIQUE must + * _not_ return a unique string when SET_VERSION hasn't been called yet, + * otherwise libdrm breaks. Even when that unique string can't ever change, and + * is totally irrelevant for actually opening the device because runtime + * assignable device instances were only support in drm 1.0, which is long dead. + * But the libdrm code in drmOpenByName somehow survived, hence this can't be + * broken. + */ + static int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv); diff --git a/drivers/gpu/drm/drm_platform.c b/drivers/gpu/drm/drm_platform.c index 644169e1a029..2c819ef90090 100644 --- a/drivers/gpu/drm/drm_platform.c +++ b/drivers/gpu/drm/drm_platform.c @@ -68,24 +68,6 @@ err_free: return ret; } -int drm_platform_set_busid(struct drm_device *dev, struct drm_master *master) -{ - int id; - - id = dev->platformdev->id; - if (id < 0) - id = 0; - - master->unique = kasprintf(GFP_KERNEL, "platform:%s:%02d", - dev->platformdev->name, id); - if (!master->unique) - return -ENOMEM; - - master->unique_len = strlen(master->unique); - return 0; -} -EXPORT_SYMBOL(drm_platform_set_busid); - /** * drm_platform_init - Register a platform device with the DRM subsystem * @driver: DRM device driver diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c b/drivers/gpu/drm/etnaviv/etnaviv_drv.c index 3d4f56df8359..340d390306d8 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c @@ -496,7 +496,6 @@ static struct drm_driver etnaviv_drm_driver = { DRIVER_RENDER, .open = etnaviv_open, .preclose = etnaviv_preclose, - .set_busid = drm_platform_set_busid, .gem_free_object_unlocked = etnaviv_gem_free_object, .gem_vm_ops = &vm_ops, .prime_handle_to_fd = drm_gem_prime_handle_to_fd, diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c index 4a679fb9bb02..13d28d4229e2 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c @@ -407,7 +407,6 @@ static struct drm_driver exynos_drm_driver = { .preclose = exynos_drm_preclose, .lastclose = exynos_drm_lastclose, .postclose = exynos_drm_postclose, - .set_busid = drm_platform_set_busid, .get_vblank_counter = drm_vblank_no_hw_counter, .enable_vblank = exynos_drm_crtc_enable_vblank, .disable_vblank = exynos_drm_crtc_disable_vblank, diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c index ef2c32ec1616..1edd9bc80294 100644 --- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c +++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c @@ -171,7 +171,6 @@ static struct drm_driver kirin_drm_driver = { .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | DRIVER_ATOMIC | DRIVER_HAVE_IRQ, .fops = &kirin_drm_fops, - .set_busid = drm_platform_set_busid, .gem_free_object_unlocked = drm_gem_cma_free_object, .gem_vm_ops = &drm_gem_cma_vm_ops, diff --git a/drivers/gpu/drm/imx/imx-drm-core.c b/drivers/gpu/drm/imx/imx-drm-core.c index 82656654fb21..7746418a4c08 100644 --- a/drivers/gpu/drm/imx/imx-drm-core.c +++ b/drivers/gpu/drm/imx/imx-drm-core.c @@ -407,7 +407,6 @@ static struct drm_driver imx_drm_driver = { .load = imx_drm_driver_load, .unload = imx_drm_driver_unload, .lastclose = imx_drm_driver_lastclose, - .set_busid = drm_platform_set_busid, .gem_free_object_unlocked = drm_gem_cma_free_object, .gem_vm_ops = &drm_gem_cma_vm_ops, .dumb_create = drm_gem_cma_dumb_create, diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 568fcc328f27..a02dc2b27739 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -722,7 +722,6 @@ static struct drm_driver msm_driver = { .open = msm_open, .preclose = msm_preclose, .lastclose = msm_lastclose, - .set_busid = drm_platform_set_busid, .irq_handler = msm_irq, .irq_preinstall = msm_irq_preinstall, .irq_postinstall = msm_irq_postinstall, diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c index c00ff6e786a3..295e7621cc68 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drm.c +++ b/drivers/gpu/drm/nouveau/nouveau_drm.c @@ -1070,7 +1070,6 @@ nouveau_drm_init(void) driver_pci = driver_stub; driver_pci.set_busid = drm_pci_set_busid; driver_platform = driver_stub; - driver_platform.set_busid = drm_platform_set_busid; nouveau_display_options(); diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c index 6b97011154bf..26c6134eb744 100644 --- a/drivers/gpu/drm/omapdrm/omap_drv.c +++ b/drivers/gpu/drm/omapdrm/omap_drv.c @@ -801,7 +801,6 @@ static struct drm_driver omap_drm_driver = { .unload = dev_unload, .open = dev_open, .lastclose = dev_lastclose, - .set_busid = drm_platform_set_busid, .get_vblank_counter = drm_vblank_no_hw_counter, .enable_vblank = omap_irq_enable_vblank, .disable_vblank = omap_irq_disable_vblank, diff --git a/drivers/gpu/drm/shmobile/shmob_drm_drv.c b/drivers/gpu/drm/shmobile/shmob_drm_drv.c index ee79264b5b6a..f0492603ea88 100644 --- a/drivers/gpu/drm/shmobile/shmob_drm_drv.c +++ b/drivers/gpu/drm/shmobile/shmob_drm_drv.c @@ -259,7 +259,6 @@ static struct drm_driver shmob_drm_driver = { | DRIVER_PRIME, .load = shmob_drm_load, .unload = shmob_drm_unload, - .set_busid = drm_platform_set_busid, .irq_handler = shmob_drm_irq, .get_vblank_counter = drm_vblank_no_hw_counter, .enable_vblank = shmob_drm_enable_vblank, diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c index 308e197908fc..d27809372d54 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c @@ -541,7 +541,6 @@ static struct drm_driver tilcdc_driver = { .load = tilcdc_load, .unload = tilcdc_unload, .lastclose = tilcdc_lastclose, - .set_busid = drm_platform_set_busid, .irq_handler = tilcdc_irq, .irq_preinstall = tilcdc_irq_preinstall, .irq_postinstall = tilcdc_irq_postinstall, diff --git a/drivers/gpu/drm/virtio/virtgpu_drm_bus.c b/drivers/gpu/drm/virtio/virtgpu_drm_bus.c index 88a39165edd5..7f0e93f87a55 100644 --- a/drivers/gpu/drm/virtio/virtgpu_drm_bus.c +++ b/drivers/gpu/drm/virtio/virtgpu_drm_bus.c @@ -27,16 +27,6 @@ #include "virtgpu_drv.h" -int drm_virtio_set_busid(struct drm_device *dev, struct drm_master *master) -{ - struct pci_dev *pdev = dev->pdev; - - if (pdev) { - return drm_pci_set_busid(dev, master); - } - return 0; -} - static void virtio_pci_kick_out_firmware_fb(struct pci_dev *pci_dev) { struct apertures_struct *ap; diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.c b/drivers/gpu/drm/virtio/virtgpu_drv.c index 5820b7020ae5..c13f70cfc461 100644 --- a/drivers/gpu/drm/virtio/virtgpu_drv.c +++ b/drivers/gpu/drm/virtio/virtgpu_drv.c @@ -117,7 +117,6 @@ static const struct file_operations virtio_gpu_driver_fops = { static struct drm_driver driver = { .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME | DRIVER_RENDER | DRIVER_ATOMIC, - .set_busid = drm_virtio_set_busid, .load = virtio_gpu_driver_load, .unload = virtio_gpu_driver_unload, .open = virtio_gpu_driver_open, diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h index acf556a35cb2..b18ef3111f0c 100644 --- a/drivers/gpu/drm/virtio/virtgpu_drv.h +++ b/drivers/gpu/drm/virtio/virtgpu_drv.h @@ -49,7 +49,6 @@ #define DRIVER_PATCHLEVEL 1 /* virtgpu_drm_bus.c */ -int drm_virtio_set_busid(struct drm_device *dev, struct drm_master *master); int drm_virtio_init(struct drm_driver *driver, struct virtio_device *vdev); struct virtio_gpu_object { diff --git a/include/drm/drmP.h b/include/drm/drmP.h index fd4e4391aee5..babec2e80760 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -1132,7 +1132,6 @@ extern int drm_pcie_get_max_link_width(struct drm_device *dev, u32 *mlw); /* platform section */ extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device); -extern int drm_platform_set_busid(struct drm_device *d, struct drm_master *m); /* returns true if currently okay to sleep */ static __inline__ bool drm_can_sleep(void) -- cgit v1.2.3 From 6a5625d82704b1777696048e837c51418cfad1d8 Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Thu, 5 May 2016 21:26:34 +0530 Subject: drm/msm: Drop the id_table in platform_driver This isn't needed as we only support OF. Signed-off-by: Archit Taneja Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_drv.c | 6 ------ 1 file changed, 6 deletions(-) (limited to 'drivers/gpu/drm/msm/msm_drv.c') diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index a02dc2b27739..476eafef7add 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -852,11 +852,6 @@ static int msm_pdev_remove(struct platform_device *pdev) return 0; } -static const struct platform_device_id msm_id[] = { - { "mdp", 0 }, - { } -}; - static const struct of_device_id dt_match[] = { { .compatible = "qcom,mdp4", .data = (void *) 4 }, /* mdp4 */ { .compatible = "qcom,mdp5", .data = (void *) 5 }, /* mdp5 */ @@ -874,7 +869,6 @@ static struct platform_driver msm_platform_driver = { .of_match_table = dt_match, .pm = &msm_pm_ops, }, - .id_table = msm_id, }; static int __init msm_drm_register(void) -- cgit v1.2.3 From a2b3a5571f386e23b56164396292675bac6f2a19 Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Wed, 18 May 2016 15:06:03 +0530 Subject: drm/msm: Get irq number within kms driver itself The driver gets the irq number using platform_get_irq on the main kms platform device. This works fine since both MDP4 and MDP5 currently have a flat device hierarchy. The platform device tied with the drm_device points to the MDP DT node in both cases. This won't work when MDP5 supports a tree-like hierarchy. In this case, the platform device tied to the top level drm_device is the MDSS DT node, and the irq we need for KMS is the one generated by MDP5, not MDSS. Get the irq number from the MDP4/5 kms driver itself. Each driver can later provide the irq number based on what device hierarchy it uses. While we're at it, call drm_irq_install only when we have a valid KMS driver. Signed-off-by: Archit Taneja Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c | 11 ++++++++++- drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c | 11 ++++++++++- drivers/gpu/drm/msm/msm_drv.c | 14 ++++++++------ drivers/gpu/drm/msm/msm_kms.h | 3 +++ 4 files changed, 31 insertions(+), 8 deletions(-) (limited to 'drivers/gpu/drm/msm/msm_drv.c') diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c index 388663afd23f..b6920917c4a9 100644 --- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c +++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c @@ -436,7 +436,7 @@ struct msm_kms *mdp4_kms_init(struct drm_device *dev) struct mdp4_kms *mdp4_kms; struct msm_kms *kms = NULL; struct msm_mmu *mmu; - int ret; + int irq, ret; mdp4_kms = kzalloc(sizeof(*mdp4_kms), GFP_KERNEL); if (!mdp4_kms) { @@ -457,6 +457,15 @@ struct msm_kms *mdp4_kms_init(struct drm_device *dev) goto fail; } + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + ret = irq; + dev_err(dev->dev, "failed to get irq: %d\n", ret); + goto fail; + } + + kms->irq = irq; + /* NOTE: driver for this regulator still missing upstream.. use * _get_exclusive() and ignore the error if it does not exist * (and hope that the bootloader left it on for us) diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c index 16316bc4933d..e5b63611cbc2 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c @@ -580,7 +580,7 @@ struct msm_kms *mdp5_kms_init(struct drm_device *dev) struct msm_kms *kms = NULL; struct msm_mmu *mmu; uint32_t major, minor; - int i, ret; + int irq, i, ret; mdp5_kms = kzalloc(sizeof(*mdp5_kms), GFP_KERNEL); if (!mdp5_kms) { @@ -610,6 +610,15 @@ struct msm_kms *mdp5_kms_init(struct drm_device *dev) goto fail; } + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + ret = irq; + dev_err(dev->dev, "failed to get irq: %d\n", ret); + goto fail; + } + + kms->irq = irq; + mdp5_kms->vdd = devm_regulator_get(&pdev->dev, "vdd"); if (IS_ERR(mdp5_kms->vdd)) { ret = PTR_ERR(mdp5_kms->vdd); diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 476eafef7add..092926b35baf 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -417,12 +417,14 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv) goto fail; } - pm_runtime_get_sync(dev); - ret = drm_irq_install(ddev, platform_get_irq(pdev, 0)); - pm_runtime_put_sync(dev); - if (ret < 0) { - dev_err(dev, "failed to install IRQ handler\n"); - goto fail; + if (kms) { + pm_runtime_get_sync(dev); + ret = drm_irq_install(ddev, kms->irq); + pm_runtime_put_sync(dev); + if (ret < 0) { + dev_err(dev, "failed to install IRQ handler\n"); + goto fail; + } } ret = drm_dev_register(ddev, 0); diff --git a/drivers/gpu/drm/msm/msm_kms.h b/drivers/gpu/drm/msm/msm_kms.h index 00998f9ef16a..0452856355c1 100644 --- a/drivers/gpu/drm/msm/msm_kms.h +++ b/drivers/gpu/drm/msm/msm_kms.h @@ -60,6 +60,9 @@ struct msm_kms_funcs { struct msm_kms { const struct msm_kms_funcs *funcs; + + /* irq number to be passed on to drm_irq_install */ + int irq; }; static inline void msm_kms_init(struct msm_kms *kms, -- cgit v1.2.3 From 1dd0a0b18697e59c0928cea41b7e922e80d7d246 Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Mon, 30 May 2016 16:36:50 +0530 Subject: drm/msm/mdp5: Create a separate MDP5 device In order to have a tree-like device hierarchy between MDSS and its sub-blocks (MDP5, DSI, HDMI, eDP etc), we need to create a separate device/driver for MDP5. Currently, MDP5 and MDSS are squashed together are are tied to the top level platform_device, which is also the one used to create drm_device. The mdp5_kms_init code is split into two parts. The part where device resources are allocated are associated with the MDP5 driver's probe, the rest is executed later when we initialize modeset. With this change, unlike MDP4, the MDP5 platform_device isn't tied to the top level drm_device anymore. The top level drm_device is now associated with a platform device that corresponds to MDSS wrapper hardware. Create mdp5_init/destroy funcs that will be used by the MDP5 driver probe/remove. Use the HW_VERSION register in the MDP5 register address space. Both the MDSS and MDP VERSION registers give out identical version info. The older mdp5_kms_init code is left as is for now, this would be removed later when we have all the pieces to support the new device hierarchy. Signed-off-by: Archit Taneja Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c | 185 +++++++++++++++++++++++++++++++- drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h | 2 + drivers/gpu/drm/msm/msm_drv.c | 2 + drivers/gpu/drm/msm/msm_drv.h | 3 + 4 files changed, 189 insertions(+), 3 deletions(-) (limited to 'drivers/gpu/drm/msm/msm_drv.c') diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c index e5b63611cbc2..fcb1bf450883 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c @@ -111,7 +111,7 @@ static int mdp5_set_split_display(struct msm_kms *kms, return mdp5_encoder_set_split_display(encoder, slave_encoder); } -static void mdp5_destroy(struct msm_kms *kms) +static void mdp5_kms_destroy(struct msm_kms *kms) { struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms)); struct msm_mmu *mmu = mdp5_kms->mmu; @@ -148,7 +148,7 @@ static const struct mdp_kms_funcs kms_funcs = { .get_format = mdp_get_format, .round_pixclk = mdp5_round_pixclk, .set_split_display = mdp5_set_split_display, - .destroy = mdp5_destroy, + .destroy = mdp5_kms_destroy, }, .set_irqmask = mdp5_set_irqmask, }; @@ -434,6 +434,21 @@ static void read_hw_revision(struct mdp5_kms *mdp5_kms, DBG("MDP5 version v%d.%d", *major, *minor); } +static void read_mdp_hw_revision(struct mdp5_kms *mdp5_kms, + u32 *major, u32 *minor) +{ + u32 version; + + mdp5_enable(mdp5_kms); + version = mdp5_read(mdp5_kms, REG_MDP5_MDP_HW_VERSION(0)); + mdp5_disable(mdp5_kms); + + *major = FIELD(version, MDP5_MDP_HW_VERSION_MAJOR); + *minor = FIELD(version, MDP5_MDP_HW_VERSION_MINOR); + + DBG("MDP5 version v%d.%d", *major, *minor); +} + static int get_clk(struct platform_device *pdev, struct clk **clkp, const char *name, bool mandatory) { @@ -757,6 +772,170 @@ struct msm_kms *mdp5_kms_init(struct drm_device *dev) fail: if (kms) - mdp5_destroy(kms); + mdp5_kms_destroy(kms); return ERR_PTR(ret); } + +static void mdp5_destroy(struct platform_device *pdev) +{ + struct mdp5_kms *mdp5_kms = platform_get_drvdata(pdev); + + if (mdp5_kms->ctlm) + mdp5_ctlm_destroy(mdp5_kms->ctlm); + if (mdp5_kms->smp) + mdp5_smp_destroy(mdp5_kms->smp); + if (mdp5_kms->cfg) + mdp5_cfg_destroy(mdp5_kms->cfg); +} + +static int mdp5_init(struct platform_device *pdev, struct drm_device *dev) +{ + struct msm_drm_private *priv = dev->dev_private; + struct mdp5_kms *mdp5_kms; + struct mdp5_cfg *config; + u32 major, minor; + int ret; + + mdp5_kms = devm_kzalloc(&pdev->dev, sizeof(*mdp5_kms), GFP_KERNEL); + if (!mdp5_kms) { + ret = -ENOMEM; + goto fail; + } + + platform_set_drvdata(pdev, mdp5_kms); + + spin_lock_init(&mdp5_kms->resource_lock); + + mdp5_kms->dev = dev; + mdp5_kms->pdev = pdev; + + mdp5_kms->mmio = msm_ioremap(pdev, "mdp_phys", "MDP5"); + if (IS_ERR(mdp5_kms->mmio)) { + ret = PTR_ERR(mdp5_kms->mmio); + goto fail; + } + + /* mandatory clocks: */ + ret = get_clk(pdev, &mdp5_kms->axi_clk, "bus_clk", true); + if (ret) + goto fail; + ret = get_clk(pdev, &mdp5_kms->ahb_clk, "iface_clk", true); + if (ret) + goto fail; + ret = get_clk(pdev, &mdp5_kms->core_clk, "core_clk", true); + if (ret) + goto fail; + ret = get_clk(pdev, &mdp5_kms->vsync_clk, "vsync_clk", true); + if (ret) + goto fail; + + /* optional clocks: */ + get_clk(pdev, &mdp5_kms->lut_clk, "lut_clk", false); + + /* we need to set a default rate before enabling. Set a safe + * rate first, then figure out hw revision, and then set a + * more optimal rate: + */ + clk_set_rate(mdp5_kms->core_clk, 200000000); + + read_mdp_hw_revision(mdp5_kms, &major, &minor); + + mdp5_kms->cfg = mdp5_cfg_init(mdp5_kms, major, minor); + if (IS_ERR(mdp5_kms->cfg)) { + ret = PTR_ERR(mdp5_kms->cfg); + mdp5_kms->cfg = NULL; + goto fail; + } + + config = mdp5_cfg_get_config(mdp5_kms->cfg); + mdp5_kms->caps = config->hw->mdp.caps; + + /* TODO: compute core clock rate at runtime */ + clk_set_rate(mdp5_kms->core_clk, config->hw->max_clk); + + /* + * Some chipsets have a Shared Memory Pool (SMP), while others + * have dedicated latency buffering per source pipe instead; + * this section initializes the SMP: + */ + if (mdp5_kms->caps & MDP_CAP_SMP) { + mdp5_kms->smp = mdp5_smp_init(mdp5_kms->dev, &config->hw->smp); + if (IS_ERR(mdp5_kms->smp)) { + ret = PTR_ERR(mdp5_kms->smp); + mdp5_kms->smp = NULL; + goto fail; + } + } + + mdp5_kms->ctlm = mdp5_ctlm_init(dev, mdp5_kms->mmio, mdp5_kms->cfg); + if (IS_ERR(mdp5_kms->ctlm)) { + ret = PTR_ERR(mdp5_kms->ctlm); + mdp5_kms->ctlm = NULL; + goto fail; + } + + /* set uninit-ed kms */ + priv->kms = &mdp5_kms->base.base; + + return 0; +fail: + mdp5_destroy(pdev); + return ret; +} + +static int mdp5_bind(struct device *dev, struct device *master, void *data) +{ + struct drm_device *ddev = dev_get_drvdata(master); + struct platform_device *pdev = to_platform_device(dev); + + DBG(""); + + return mdp5_init(pdev, ddev); +} + +static void mdp5_unbind(struct device *dev, struct device *master, + void *data) +{ + struct platform_device *pdev = to_platform_device(dev); + + mdp5_destroy(pdev); +} + +static const struct component_ops mdp5_ops = { + .bind = mdp5_bind, + .unbind = mdp5_unbind, +}; + +static int mdp5_dev_probe(struct platform_device *pdev) +{ + DBG(""); + return component_add(&pdev->dev, &mdp5_ops); +} + +static int mdp5_dev_remove(struct platform_device *pdev) +{ + DBG(""); + component_del(&pdev->dev, &mdp5_ops); + return 0; +} + +static struct platform_driver mdp5_driver = { + .probe = mdp5_dev_probe, + .remove = mdp5_dev_remove, + .driver = { + .name = "msm_mdp", + /* Add a DT match field once we move to new hierarchy */ + }, +}; + +void __init msm_mdp_register(void) +{ + DBG(""); + platform_driver_register(&mdp5_driver); +} + +void __exit msm_mdp_unregister(void) +{ + DBG(""); + platform_driver_unregister(&mdp5_driver); +} diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h index 9cf5aa4e5ec3..d681c026aad5 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h @@ -31,6 +31,8 @@ struct mdp5_kms { struct drm_device *dev; + struct platform_device *pdev; + struct mdp5_cfg_handler *cfg; uint32_t caps; /* MDP capabilities (MDP_CAP_XXX bits) */ diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 092926b35baf..570139234210 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -876,6 +876,7 @@ static struct platform_driver msm_platform_driver = { static int __init msm_drm_register(void) { DBG("init"); + msm_mdp_register(); msm_dsi_register(); msm_edp_register(); msm_hdmi_register(); @@ -891,6 +892,7 @@ static void __exit msm_drm_unregister(void) adreno_unregister(); msm_edp_unregister(); msm_dsi_unregister(); + msm_mdp_unregister(); } module_init(msm_drm_register); diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h index a7acd839282e..be01e3895178 100644 --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -261,6 +261,9 @@ static inline int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, } #endif +void __init msm_mdp_register(void); +void __exit msm_mdp_unregister(void); + #ifdef CONFIG_DEBUG_FS void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m); void msm_gem_describe_objects(struct list_head *list, struct seq_file *m); -- cgit v1.2.3 From 0a6030d224d3a446624a06e2858a69974738bd2a Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Sun, 8 May 2016 21:36:28 +0530 Subject: drm/msm/mdp5: Use the new hierarchy and drop old irq management Call msm_mdss_init in msm_drv to set up top level registers/irq line. Start using the new kms_init2/destroy2 funcs to inititalize MDP5 KMS. With the MDSS interrupt and irqdomain set up, the old MDP5 irq code can be dropped. The mdp5_hw_init kms func now uses the platform device tied to MDP5 instead of the one tied to the drm_device/MDSS. Signed-off-by: Archit Taneja Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/mdp/mdp5/mdp5_irq.c | 105 +------------------------------- drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c | 17 ++---- drivers/gpu/drm/msm/msm_drv.c | 15 ++++- 3 files changed, 18 insertions(+), 119 deletions(-) (limited to 'drivers/gpu/drm/msm/msm_drv.c') diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_irq.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_irq.c index 73bc3e312fd4..c6562d191eaf 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_irq.c +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_irq.c @@ -15,7 +15,6 @@ * this program. If not, see . */ -#include #include #include "msm_drv.h" @@ -68,8 +67,9 @@ void mdp5_irq_uninstall(struct msm_kms *kms) mdp5_disable(mdp5_kms); } -static void mdp5_irq_mdp(struct mdp_kms *mdp_kms) +irqreturn_t mdp5_irq(struct msm_kms *kms) { + struct mdp_kms *mdp_kms = to_mdp_kms(kms); struct mdp5_kms *mdp5_kms = to_mdp5_kms(mdp_kms); struct drm_device *dev = mdp5_kms->dev; struct msm_drm_private *priv = dev->dev_private; @@ -87,29 +87,6 @@ static void mdp5_irq_mdp(struct mdp_kms *mdp_kms) for (id = 0; id < priv->num_crtcs; id++) if (status & mdp5_crtc_vblank(priv->crtcs[id])) drm_handle_vblank(dev, id); -} - -irqreturn_t mdp5_irq(struct msm_kms *kms) -{ - struct mdp_kms *mdp_kms = to_mdp_kms(kms); - struct mdp5_kms *mdp5_kms = to_mdp5_kms(mdp_kms); - uint32_t intr; - - intr = mdp5_read(mdp5_kms, REG_MDSS_HW_INTR_STATUS); - - VERB("intr=%08x", intr); - - if (intr & MDSS_HW_INTR_STATUS_INTR_MDP) { - mdp5_irq_mdp(mdp_kms); - intr &= ~MDSS_HW_INTR_STATUS_INTR_MDP; - } - - while (intr) { - irq_hw_number_t hwirq = fls(intr) - 1; - generic_handle_irq(irq_find_mapping( - mdp5_kms->irqcontroller.domain, hwirq)); - intr &= ~(1 << hwirq); - } return IRQ_HANDLED; } @@ -135,81 +112,3 @@ void mdp5_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc) mdp5_crtc_vblank(crtc), false); mdp5_disable(mdp5_kms); } - -/* - * interrupt-controller implementation, so sub-blocks (hdmi/eDP/dsi/etc) - * can register to get their irq's delivered - */ - -#define VALID_IRQS (MDSS_HW_INTR_STATUS_INTR_DSI0 | \ - MDSS_HW_INTR_STATUS_INTR_DSI1 | \ - MDSS_HW_INTR_STATUS_INTR_HDMI | \ - MDSS_HW_INTR_STATUS_INTR_EDP) - -static void mdp5_hw_mask_irq(struct irq_data *irqd) -{ - struct mdp5_kms *mdp5_kms = irq_data_get_irq_chip_data(irqd); - smp_mb__before_atomic(); - clear_bit(irqd->hwirq, &mdp5_kms->irqcontroller.enabled_mask); - smp_mb__after_atomic(); -} - -static void mdp5_hw_unmask_irq(struct irq_data *irqd) -{ - struct mdp5_kms *mdp5_kms = irq_data_get_irq_chip_data(irqd); - smp_mb__before_atomic(); - set_bit(irqd->hwirq, &mdp5_kms->irqcontroller.enabled_mask); - smp_mb__after_atomic(); -} - -static struct irq_chip mdp5_hw_irq_chip = { - .name = "mdp5", - .irq_mask = mdp5_hw_mask_irq, - .irq_unmask = mdp5_hw_unmask_irq, -}; - -static int mdp5_hw_irqdomain_map(struct irq_domain *d, - unsigned int irq, irq_hw_number_t hwirq) -{ - struct mdp5_kms *mdp5_kms = d->host_data; - - if (!(VALID_IRQS & (1 << hwirq))) - return -EPERM; - - irq_set_chip_and_handler(irq, &mdp5_hw_irq_chip, handle_level_irq); - irq_set_chip_data(irq, mdp5_kms); - - return 0; -} - -static struct irq_domain_ops mdp5_hw_irqdomain_ops = { - .map = mdp5_hw_irqdomain_map, - .xlate = irq_domain_xlate_onecell, -}; - - -int mdp5_irq_domain_init(struct mdp5_kms *mdp5_kms) -{ - struct device *dev = mdp5_kms->dev->dev; - struct irq_domain *d; - - d = irq_domain_add_linear(dev->of_node, 32, - &mdp5_hw_irqdomain_ops, mdp5_kms); - if (!d) { - dev_err(dev, "mdp5 irq domain add failed\n"); - return -ENXIO; - } - - mdp5_kms->irqcontroller.enabled_mask = 0; - mdp5_kms->irqcontroller.domain = d; - - return 0; -} - -void mdp5_irq_domain_fini(struct mdp5_kms *mdp5_kms) -{ - if (mdp5_kms->irqcontroller.domain) { - irq_domain_remove(mdp5_kms->irqcontroller.domain); - mdp5_kms->irqcontroller.domain = NULL; - } -} diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c index 9f69924ec326..52d756d66016 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c @@ -29,10 +29,10 @@ static const char *iommu_ports[] = { static int mdp5_hw_init(struct msm_kms *kms) { struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms)); - struct drm_device *dev = mdp5_kms->dev; + struct platform_device *pdev = mdp5_kms->pdev; unsigned long flags; - pm_runtime_get_sync(dev->dev); + pm_runtime_get_sync(&pdev->dev); /* Magic unknown register writes: * @@ -64,7 +64,7 @@ static int mdp5_hw_init(struct msm_kms *kms) mdp5_ctlm_hw_reset(mdp5_kms->ctlm); - pm_runtime_put_sync(dev->dev); + pm_runtime_put_sync(&pdev->dev); return 0; } @@ -117,8 +117,6 @@ static void mdp5_kms_destroy(struct msm_kms *kms) struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms)); struct msm_mmu *mmu = mdp5_kms->mmu; - mdp5_irq_domain_fini(mdp5_kms); - if (mmu) { mmu->funcs->detach(mmu, iommu_ports, ARRAY_SIZE(iommu_ports)); mmu->funcs->destroy(mmu); @@ -160,7 +158,7 @@ static const struct mdp_kms_funcs kms_funcs = { .get_format = mdp_get_format, .round_pixclk = mdp5_round_pixclk, .set_split_display = mdp5_set_split_display, - .destroy = mdp5_kms_destroy, + .destroy = mdp5_kms_destroy2, }, .set_irqmask = mdp5_set_irqmask, }; @@ -357,13 +355,6 @@ static int modeset_init(struct mdp5_kms *mdp5_kms) hw_cfg = mdp5_cfg_get_hw_config(mdp5_kms->cfg); - /* register our interrupt-controller for hdmi/eDP/dsi/etc - * to use for irqs routed through mdp: - */ - ret = mdp5_irq_domain_init(mdp5_kms); - if (ret) - goto fail; - /* construct CRTCs and their private planes: */ for (i = 0; i < hw_cfg->pipe_rgb.count; i++) { struct drm_plane *plane; diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 570139234210..517f0ae51335 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -237,6 +237,8 @@ static int msm_drm_uninit(struct device *dev) component_unbind_all(dev, ddev); + msm_mdss_destroy(ddev); + ddev->dev_private = NULL; drm_dev_unref(ddev); @@ -351,6 +353,13 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv) ddev->dev_private = priv; + ret = msm_mdss_init(ddev); + if (ret) { + kfree(priv); + drm_dev_unref(ddev); + return ret; + } + priv->wq = alloc_ordered_workqueue("msm", 0); priv->atomic_wq = alloc_ordered_workqueue("msm:atomic", 0); init_waitqueue_head(&priv->pending_crtcs_event); @@ -365,6 +374,7 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv) /* Bind all our sub-components: */ ret = component_bind_all(dev, ddev); if (ret) { + msm_mdss_destroy(ddev); kfree(priv); drm_dev_unref(ddev); return ret; @@ -377,9 +387,10 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv) switch (get_mdp_ver(pdev)) { case 4: kms = mdp4_kms_init(ddev); + priv->kms = kms; break; case 5: - kms = mdp5_kms_init(ddev); + kms = mdp5_kms_init2(ddev); break; default: kms = ERR_PTR(-ENODEV); @@ -398,8 +409,6 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv) goto fail; } - priv->kms = kms; - if (kms) { pm_runtime_enable(dev); ret = kms->funcs->hw_init(kms); -- cgit v1.2.3 From 392ae6e0efa5e27e977b1cdf88c619c0434a7417 Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Tue, 14 Jun 2016 18:24:54 +0530 Subject: drm/msm/mdp5: Remove old kms init/destroy funcs With the new kms_init/destroy funcs in place for MDP5, we can get rid of the old kms funcs. Some members of the mdp5_kms struct also become redundant, so we remove those too. Signed-off-by: Archit Taneja Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c | 228 +------------------------------- drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h | 9 +- drivers/gpu/drm/msm/msm_drv.c | 2 +- drivers/gpu/drm/msm/msm_kms.h | 1 - 4 files changed, 4 insertions(+), 236 deletions(-) (limited to 'drivers/gpu/drm/msm/msm_drv.c') diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c index 52d756d66016..e2caa877460a 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c @@ -121,26 +121,6 @@ static void mdp5_kms_destroy(struct msm_kms *kms) mmu->funcs->detach(mmu, iommu_ports, ARRAY_SIZE(iommu_ports)); mmu->funcs->destroy(mmu); } - - if (mdp5_kms->ctlm) - mdp5_ctlm_destroy(mdp5_kms->ctlm); - if (mdp5_kms->smp) - mdp5_smp_destroy(mdp5_kms->smp); - if (mdp5_kms->cfg) - mdp5_cfg_destroy(mdp5_kms->cfg); - - kfree(mdp5_kms); -} - -static void mdp5_kms_destroy2(struct msm_kms *kms) -{ - struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms)); - struct msm_mmu *mmu = mdp5_kms->mmu; - - if (mmu) { - mmu->funcs->detach(mmu, iommu_ports, ARRAY_SIZE(iommu_ports)); - mmu->funcs->destroy(mmu); - } } static const struct mdp_kms_funcs kms_funcs = { @@ -158,7 +138,7 @@ static const struct mdp_kms_funcs kms_funcs = { .get_format = mdp_get_format, .round_pixclk = mdp5_round_pixclk, .set_split_display = mdp5_set_split_display, - .destroy = mdp5_kms_destroy2, + .destroy = mdp5_kms_destroy, }, .set_irqmask = mdp5_set_irqmask, }; @@ -422,21 +402,6 @@ fail: return ret; } -static void read_hw_revision(struct mdp5_kms *mdp5_kms, - uint32_t *major, uint32_t *minor) -{ - uint32_t version; - - mdp5_enable(mdp5_kms); - version = mdp5_read(mdp5_kms, REG_MDSS_HW_VERSION); - mdp5_disable(mdp5_kms); - - *major = FIELD(version, MDSS_HW_VERSION_MAJOR); - *minor = FIELD(version, MDSS_HW_VERSION_MINOR); - - DBG("MDP5 version v%d.%d", *major, *minor); -} - static void read_mdp_hw_revision(struct mdp5_kms *mdp5_kms, u32 *major, u32 *minor) { @@ -591,195 +556,6 @@ static u32 mdp5_get_vblank_counter(struct drm_device *dev, unsigned int pipe) } struct msm_kms *mdp5_kms_init(struct drm_device *dev) -{ - struct platform_device *pdev = dev->platformdev; - struct mdp5_cfg *config; - struct mdp5_kms *mdp5_kms; - struct msm_kms *kms = NULL; - struct msm_mmu *mmu; - uint32_t major, minor; - int irq, i, ret; - - mdp5_kms = kzalloc(sizeof(*mdp5_kms), GFP_KERNEL); - if (!mdp5_kms) { - dev_err(dev->dev, "failed to allocate kms\n"); - ret = -ENOMEM; - goto fail; - } - - spin_lock_init(&mdp5_kms->resource_lock); - - mdp_kms_init(&mdp5_kms->base, &kms_funcs); - - kms = &mdp5_kms->base.base; - - mdp5_kms->dev = dev; - - /* mdp5_kms->mmio actually represents the MDSS base address */ - mdp5_kms->mmio = msm_ioremap(pdev, "mdp_phys", "MDP5"); - if (IS_ERR(mdp5_kms->mmio)) { - ret = PTR_ERR(mdp5_kms->mmio); - goto fail; - } - - mdp5_kms->vbif = msm_ioremap(pdev, "vbif_phys", "VBIF"); - if (IS_ERR(mdp5_kms->vbif)) { - ret = PTR_ERR(mdp5_kms->vbif); - goto fail; - } - - irq = platform_get_irq(pdev, 0); - if (irq < 0) { - ret = irq; - dev_err(dev->dev, "failed to get irq: %d\n", ret); - goto fail; - } - - kms->irq = irq; - - mdp5_kms->vdd = devm_regulator_get(&pdev->dev, "vdd"); - if (IS_ERR(mdp5_kms->vdd)) { - ret = PTR_ERR(mdp5_kms->vdd); - goto fail; - } - - ret = regulator_enable(mdp5_kms->vdd); - if (ret) { - dev_err(dev->dev, "failed to enable regulator vdd: %d\n", ret); - goto fail; - } - - /* mandatory clocks: */ - ret = get_clk(pdev, &mdp5_kms->axi_clk, "bus_clk", true); - if (ret) - goto fail; - ret = get_clk(pdev, &mdp5_kms->ahb_clk, "iface_clk", true); - if (ret) - goto fail; - ret = get_clk(pdev, &mdp5_kms->core_clk, "core_clk", true); - if (ret) - goto fail; - ret = get_clk(pdev, &mdp5_kms->vsync_clk, "vsync_clk", true); - if (ret) - goto fail; - - /* optional clocks: */ - get_clk(pdev, &mdp5_kms->lut_clk, "lut_clk", false); - - /* we need to set a default rate before enabling. Set a safe - * rate first, then figure out hw revision, and then set a - * more optimal rate: - */ - clk_set_rate(mdp5_kms->core_clk, 200000000); - - read_hw_revision(mdp5_kms, &major, &minor); - - mdp5_kms->cfg = mdp5_cfg_init(mdp5_kms, major, minor); - if (IS_ERR(mdp5_kms->cfg)) { - ret = PTR_ERR(mdp5_kms->cfg); - mdp5_kms->cfg = NULL; - goto fail; - } - - config = mdp5_cfg_get_config(mdp5_kms->cfg); - mdp5_kms->caps = config->hw->mdp.caps; - - /* TODO: compute core clock rate at runtime */ - clk_set_rate(mdp5_kms->core_clk, config->hw->max_clk); - - /* - * Some chipsets have a Shared Memory Pool (SMP), while others - * have dedicated latency buffering per source pipe instead; - * this section initializes the SMP: - */ - if (mdp5_kms->caps & MDP_CAP_SMP) { - mdp5_kms->smp = mdp5_smp_init(mdp5_kms->dev, &config->hw->smp); - if (IS_ERR(mdp5_kms->smp)) { - ret = PTR_ERR(mdp5_kms->smp); - mdp5_kms->smp = NULL; - goto fail; - } - } - - mdp5_kms->ctlm = mdp5_ctlm_init(dev, mdp5_kms->mmio, mdp5_kms->cfg); - if (IS_ERR(mdp5_kms->ctlm)) { - ret = PTR_ERR(mdp5_kms->ctlm); - mdp5_kms->ctlm = NULL; - goto fail; - } - - /* make sure things are off before attaching iommu (bootloader could - * have left things on, in which case we'll start getting faults if - * we don't disable): - */ - mdp5_enable(mdp5_kms); - for (i = 0; i < MDP5_INTF_NUM_MAX; i++) { - if (mdp5_cfg_intf_is_virtual(config->hw->intf.connect[i]) || - !config->hw->intf.base[i]) - continue; - mdp5_write(mdp5_kms, REG_MDP5_INTF_TIMING_ENGINE_EN(i), 0); - - mdp5_write(mdp5_kms, REG_MDP5_INTF_FRAME_LINE_COUNT_EN(i), 0x3); - } - mdp5_disable(mdp5_kms); - mdelay(16); - - if (config->platform.iommu) { - mmu = msm_iommu_new(&pdev->dev, config->platform.iommu); - if (IS_ERR(mmu)) { - ret = PTR_ERR(mmu); - dev_err(dev->dev, "failed to init iommu: %d\n", ret); - iommu_domain_free(config->platform.iommu); - goto fail; - } - - ret = mmu->funcs->attach(mmu, iommu_ports, - ARRAY_SIZE(iommu_ports)); - if (ret) { - dev_err(dev->dev, "failed to attach iommu: %d\n", ret); - mmu->funcs->destroy(mmu); - goto fail; - } - } else { - dev_info(dev->dev, "no iommu, fallback to phys " - "contig buffers for scanout\n"); - mmu = NULL; - } - mdp5_kms->mmu = mmu; - - mdp5_kms->id = msm_register_mmu(dev, mmu); - if (mdp5_kms->id < 0) { - ret = mdp5_kms->id; - dev_err(dev->dev, "failed to register mdp5 iommu: %d\n", ret); - goto fail; - } - - ret = modeset_init(mdp5_kms); - if (ret) { - dev_err(dev->dev, "modeset_init failed: %d\n", ret); - goto fail; - } - - dev->mode_config.min_width = 0; - dev->mode_config.min_height = 0; - dev->mode_config.max_width = config->hw->lm.max_width; - dev->mode_config.max_height = config->hw->lm.max_height; - - dev->driver->get_vblank_timestamp = mdp5_get_vblank_timestamp; - dev->driver->get_scanout_position = mdp5_get_scanoutpos; - dev->driver->get_vblank_counter = mdp5_get_vblank_counter; - dev->max_vblank_count = 0xffffffff; - dev->vblank_disable_immediate = true; - - return kms; - -fail: - if (kms) - mdp5_kms_destroy(kms); - return ERR_PTR(ret); -} - -struct msm_kms *mdp5_kms_init2(struct drm_device *dev) { struct msm_drm_private *priv = dev->dev_private; struct platform_device *pdev; @@ -878,7 +654,7 @@ struct msm_kms *mdp5_kms_init2(struct drm_device *dev) return kms; fail: if (kms) - mdp5_kms_destroy2(kms); + mdp5_kms_destroy(kms); return ERR_PTR(ret); } diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h index d681c026aad5..d6a85fcbb592 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h @@ -45,9 +45,7 @@ struct mdp5_kms { struct mdp5_ctl_manager *ctlm; /* io/register spaces: */ - void __iomem *mmio, *vbif; - - struct regulator *vdd; + void __iomem *mmio; struct clk *axi_clk; struct clk *ahb_clk; @@ -62,11 +60,6 @@ struct mdp5_kms { spinlock_t resource_lock; struct mdp_irq error_handler; - - struct { - volatile unsigned long enabled_mask; - struct irq_domain *domain; - } irqcontroller; }; #define to_mdp5_kms(x) container_of(x, struct mdp5_kms, base) diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 517f0ae51335..d650aaca60f8 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -390,7 +390,7 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv) priv->kms = kms; break; case 5: - kms = mdp5_kms_init2(ddev); + kms = mdp5_kms_init(ddev); break; default: kms = ERR_PTR(-ENODEV); diff --git a/drivers/gpu/drm/msm/msm_kms.h b/drivers/gpu/drm/msm/msm_kms.h index 13f893d1a518..40e41e5cdbc6 100644 --- a/drivers/gpu/drm/msm/msm_kms.h +++ b/drivers/gpu/drm/msm/msm_kms.h @@ -73,7 +73,6 @@ static inline void msm_kms_init(struct msm_kms *kms, struct msm_kms *mdp4_kms_init(struct drm_device *dev); struct msm_kms *mdp5_kms_init(struct drm_device *dev); -struct msm_kms *mdp5_kms_init2(struct drm_device *dev); int msm_mdss_init(struct drm_device *dev); void msm_mdss_destroy(struct drm_device *dev); -- cgit v1.2.3 From cd79272696ef21fb03d8b140c4530ac6b049e417 Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Wed, 15 Jun 2016 18:04:31 +0530 Subject: drm/msm: Call pm_runtime_enable/disable for newly created devices With the new device hierarchy for MDP5, we need to enable runtime PM for both the toplevel MDSS device and the MDP5 device itself. Enable runtime PM for the new devices. Since MDP4 and MDP5 now have different places where runtime PM is enabled, remove the previous pm_runtime_enable/disable calls, and squash them in the respective kms drivers. The new device hierarchy (as expressed in the DT bindings) has the GDSC tied only to the MDSS wrapper device. This GDSC needs to be enabled for accessing any register in the MDSS sub-blocks. Once every driver is runtime adapted, the GDSC will be enabled when any sub-block device calls runtime_get because of the parent-child relationship with MDSS. Until then, we call pm_runtime_get_sync() once for the MDSS device to ensure the GDSC is never disabled. This will be removed once all the drivers are runtime PM adapted. The error handling paths become a bit tricky when we call these runtime PM funcs. There doesn't seem to be any helper that checks if runtime PM is enabled already. Add bool variables in mdp4_kms/mdp5_kms structs to check if the driver had managed to call pm_runtime_enable before bailing out. Signed-off-by: Archit Taneja Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c | 8 ++++++++ drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.h | 2 ++ drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c | 6 ++++++ drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h | 2 ++ drivers/gpu/drm/msm/mdp/mdp5/mdp5_mdss.c | 12 ++++++++++++ drivers/gpu/drm/msm/msm_drv.c | 5 +---- 6 files changed, 31 insertions(+), 4 deletions(-) (limited to 'drivers/gpu/drm/msm/msm_drv.c') diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c index b6920917c4a9..ba8df15605d7 100644 --- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c +++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c @@ -158,6 +158,7 @@ static const char * const iommu_ports[] = { static void mdp4_destroy(struct msm_kms *kms) { struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms)); + struct device *dev = mdp4_kms->dev->dev; struct msm_mmu *mmu = mdp4_kms->mmu; if (mmu) { @@ -169,6 +170,10 @@ static void mdp4_destroy(struct msm_kms *kms) msm_gem_put_iova(mdp4_kms->blank_cursor_bo, mdp4_kms->id); if (mdp4_kms->blank_cursor_bo) drm_gem_object_unreference_unlocked(mdp4_kms->blank_cursor_bo); + + if (mdp4_kms->rpm_enabled) + pm_runtime_disable(dev); + kfree(mdp4_kms); } @@ -511,6 +516,9 @@ struct msm_kms *mdp4_kms_init(struct drm_device *dev) clk_set_rate(mdp4_kms->clk, config->max_clk); clk_set_rate(mdp4_kms->lut_clk, config->max_clk); + pm_runtime_enable(dev->dev); + mdp4_kms->rpm_enabled = true; + /* make sure things are off before attaching iommu (bootloader could * have left things on, in which case we'll start getting faults if * we don't disable): diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.h b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.h index c5d045d5680d..25fb83997119 100644 --- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.h +++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.h @@ -47,6 +47,8 @@ struct mdp4_kms { struct mdp_irq error_handler; + bool rpm_enabled; + /* empty/blank cursor bo to use when cursor is "disabled" */ struct drm_gem_object *blank_cursor_bo; uint32_t blank_cursor_iova; diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c index a0b974772cf6..5d6d9e146aaa 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c @@ -668,6 +668,9 @@ static void mdp5_destroy(struct platform_device *pdev) mdp5_smp_destroy(mdp5_kms->smp); if (mdp5_kms->cfg) mdp5_cfg_destroy(mdp5_kms->cfg); + + if (mdp5_kms->rpm_enabled) + pm_runtime_disable(&pdev->dev); } static int mdp5_init(struct platform_device *pdev, struct drm_device *dev) @@ -720,6 +723,9 @@ static int mdp5_init(struct platform_device *pdev, struct drm_device *dev) */ clk_set_rate(mdp5_kms->core_clk, 200000000); + pm_runtime_enable(&pdev->dev); + mdp5_kms->rpm_enabled = true; + read_mdp_hw_revision(mdp5_kms, &major, &minor); mdp5_kms->cfg = mdp5_cfg_init(mdp5_kms, major, minor); diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h index d214d50bbd46..03738927be10 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h @@ -59,6 +59,8 @@ struct mdp5_kms { */ spinlock_t resource_lock; + bool rpm_enabled; + struct mdp_irq error_handler; }; #define to_mdp5_kms(x) container_of(x, struct mdp5_kms, base) diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_mdss.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_mdss.c index 871c4424a820..d444a6901fff 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_mdss.c +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_mdss.c @@ -152,6 +152,10 @@ void msm_mdss_destroy(struct drm_device *dev) mdss->irqcontroller.domain = NULL; regulator_disable(mdss->vdd); + + pm_runtime_put_sync(dev->dev); + + pm_runtime_disable(dev->dev); } int msm_mdss_init(struct drm_device *dev) @@ -215,6 +219,14 @@ int msm_mdss_init(struct drm_device *dev) priv->mdss = mdss; + pm_runtime_enable(dev->dev); + + /* + * TODO: This is needed as the MDSS GDSC is only tied to MDSS's power + * domain. Remove this once runtime PM is adapted for all the devices. + */ + pm_runtime_get_sync(dev->dev); + return 0; fail_irq: regulator_disable(mdss->vdd); diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index d650aaca60f8..1c1869011092 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -215,10 +215,8 @@ static int msm_drm_uninit(struct device *dev) flush_workqueue(priv->atomic_wq); destroy_workqueue(priv->atomic_wq); - if (kms) { - pm_runtime_disable(dev); + if (kms) kms->funcs->destroy(kms); - } if (gpu) { mutex_lock(&ddev->struct_mutex); @@ -410,7 +408,6 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv) } if (kms) { - pm_runtime_enable(dev); ret = kms->funcs->hw_init(kms); if (ret) { dev_err(dev, "kms hw init failed: %d\n", ret); -- cgit v1.2.3 From 7d526fcf205ad011c6e5bce819b2b8a1698f7152 Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Thu, 19 May 2016 10:33:57 +0530 Subject: drm/msm: Create separate funcs for adding display/gpu components Simplifies some of the code that we'll add later. Signed-off-by: Archit Taneja Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_drv.c | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-) (limited to 'drivers/gpu/drm/msm/msm_drv.c') diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 1c1869011092..132c81333491 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -823,6 +823,18 @@ static int add_components(struct device *dev, struct component_match **matchptr, return 0; } +static int add_display_components(struct device *dev, + struct component_match **matchptr) +{ + return add_components(dev, matchptr, "connectors"); +} + +static int add_gpu_components(struct device *dev, + struct component_match **matchptr) +{ + return add_components(dev, matchptr, "gpus"); +} + static int msm_drm_bind(struct device *dev) { return msm_drm_init(dev, &msm_driver); @@ -845,9 +857,15 @@ static const struct component_master_ops msm_drm_ops = { static int msm_pdev_probe(struct platform_device *pdev) { struct component_match *match = NULL; + int ret; + + ret = add_display_components(&pdev->dev, &match); + if (ret) + return ret; - add_components(&pdev->dev, &match, "connectors"); - add_components(&pdev->dev, &match, "gpus"); + ret = add_gpu_components(&pdev->dev, &match); + if (ret) + return ret; pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); return component_master_add_with_match(&pdev->dev, &msm_drm_ops, match); -- cgit v1.2.3 From 812070eb090350af69848f462fe5266e25c5df6e Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Thu, 19 May 2016 10:38:39 +0530 Subject: drm/msm: Add display components by parsing MDP ports The kms driver currently identifies all the mdss components it needs by parsing a phandle list from the 'connectors' DT property. Instead of this, describe a list of ports that the MDP hardware provides to the external world. These ports are linked to external encoder interfaces such as DSI, HDMI. These are also the subcomponent devices that we need add. This description of ports complies with the generic graph bindings. The LVDS port is a special case since it is a part of MDP4 itself, and its output connects directly to the LVDS panel. In this case, we don't try to add it as a component. Signed-off-by: Archit Taneja Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_drv.c | 56 ++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 55 insertions(+), 1 deletion(-) (limited to 'drivers/gpu/drm/msm/msm_drv.c') diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 132c81333491..73510d0cc60a 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -823,10 +823,64 @@ static int add_components(struct device *dev, struct component_match **matchptr, return 0; } +/* + * Identify what components need to be added by parsing what remote-endpoints + * our MDP output ports are connected to. In the case of LVDS on MDP4, there + * is no external component that we need to add since LVDS is within MDP4 + * itself. + */ +static int add_components_mdp(struct device *mdp_dev, + struct component_match **matchptr) +{ + struct device_node *np = mdp_dev->of_node; + struct device_node *ep_node; + + for_each_endpoint_of_node(np, ep_node) { + struct device_node *intf; + struct of_endpoint ep; + int ret; + + ret = of_graph_parse_endpoint(ep_node, &ep); + if (ret) { + dev_err(mdp_dev, "unable to parse port endpoint\n"); + of_node_put(ep_node); + return ret; + } + + /* + * The LCDC/LVDS port on MDP4 is a speacial case where the + * remote-endpoint isn't a component that we need to add + */ + if (of_device_is_compatible(np, "qcom,mdp4") && + ep.port == 0) { + of_node_put(ep_node); + continue; + } + + /* + * It's okay if some of the ports don't have a remote endpoint + * specified. It just means that the port isn't connected to + * any external interface. + */ + intf = of_graph_get_remote_port_parent(ep_node); + if (!intf) { + of_node_put(ep_node); + continue; + } + + component_match_add(mdp_dev, matchptr, compare_of, intf); + + of_node_put(intf); + of_node_put(ep_node); + } + + return 0; +} + static int add_display_components(struct device *dev, struct component_match **matchptr) { - return add_components(dev, matchptr, "connectors"); + return add_components_mdp(dev, matchptr); } static int add_gpu_components(struct device *dev, -- cgit v1.2.3 From 54011e266499ec80104136bcecec5e8c7e21340c Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Mon, 6 Jun 2016 13:45:34 +0530 Subject: drm/msm: Add components for MDP5 For MDP5 based platforms, the master device isn't the MDP5 platform device, but the top level MDSS device, which is a parent to MDP5 and interface (DSI, HDMI, eDP etc) devices. In order to add components on MDP5 platforms, we first need to populate the MDSS children, locate the MDP5 child, and then parse its ports to get the display interfaces. Signed-off-by: Archit Taneja Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_drv.c | 61 +++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 59 insertions(+), 2 deletions(-) (limited to 'drivers/gpu/drm/msm/msm_drv.c') diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 73510d0cc60a..7333efd1eae8 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -834,6 +834,20 @@ static int add_components_mdp(struct device *mdp_dev, { struct device_node *np = mdp_dev->of_node; struct device_node *ep_node; + struct device *master_dev; + + /* + * on MDP4 based platforms, the MDP platform device is the component + * master that adds other display interface components to itself. + * + * on MDP5 based platforms, the MDSS platform device is the component + * master that adds MDP5 and other display interface components to + * itself. + */ + if (of_device_is_compatible(np, "qcom,mdp4")) + master_dev = mdp_dev; + else + master_dev = mdp_dev->parent; for_each_endpoint_of_node(np, ep_node) { struct device_node *intf; @@ -868,7 +882,7 @@ static int add_components_mdp(struct device *mdp_dev, continue; } - component_match_add(mdp_dev, matchptr, compare_of, intf); + component_match_add(master_dev, matchptr, compare_of, intf); of_node_put(intf); of_node_put(ep_node); @@ -877,10 +891,52 @@ static int add_components_mdp(struct device *mdp_dev, return 0; } +static int compare_name_mdp(struct device *dev, void *data) +{ + return (strstr(dev_name(dev), "mdp") != NULL); +} + static int add_display_components(struct device *dev, struct component_match **matchptr) { - return add_components_mdp(dev, matchptr); + struct device *mdp_dev; + int ret; + + /* + * MDP5 based devices don't have a flat hierarchy. There is a top level + * parent: MDSS, and children: MDP5, DSI, HDMI, eDP etc. Populate the + * children devices, find the MDP5 node, and then add the interfaces + * to our components list. + */ + if (of_device_is_compatible(dev->of_node, "qcom,mdss")) { + ret = of_platform_populate(dev->of_node, NULL, NULL, dev); + if (ret) { + dev_err(dev, "failed to populate children devices\n"); + return ret; + } + + mdp_dev = device_find_child(dev, NULL, compare_name_mdp); + if (!mdp_dev) { + dev_err(dev, "failed to find MDSS MDP node\n"); + of_platform_depopulate(dev); + return -ENODEV; + } + + put_device(mdp_dev); + + /* add the MDP component itself */ + component_match_add(dev, matchptr, compare_of, + mdp_dev->of_node); + } else { + /* MDP4 */ + mdp_dev = dev; + } + + ret = add_components_mdp(mdp_dev, matchptr); + if (ret) + of_platform_depopulate(dev); + + return ret; } static int add_gpu_components(struct device *dev, @@ -928,6 +984,7 @@ static int msm_pdev_probe(struct platform_device *pdev) static int msm_pdev_remove(struct platform_device *pdev) { component_master_del(&pdev->dev, &msm_drm_ops); + of_platform_depopulate(&pdev->dev); return 0; } -- cgit v1.2.3 From dc3ea265b856c11ab7f6a9c7e504f16d545f53a2 Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Thu, 19 May 2016 13:33:52 +0530 Subject: drm/msm: Drop the gpu binding The driver currently identifies the GPU components it needs by parsing a phandle list from the 'gpus' DT property. This isn't the right binding to go with. So, for now, just search all device nodes and find the gpu node we need by parsing a list of compatible strings. Once we know how to link the kms and gpu drivers, we'll drop this method and use the correct binding. Signed-off-by: Archit Taneja Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_drv.c | 42 ++++++++++++++++++++++-------------------- 1 file changed, 22 insertions(+), 20 deletions(-) (limited to 'drivers/gpu/drm/msm/msm_drv.c') diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 7333efd1eae8..66371f23cc22 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -804,25 +804,6 @@ static int compare_of(struct device *dev, void *data) return dev->of_node == data; } -static int add_components(struct device *dev, struct component_match **matchptr, - const char *name) -{ - struct device_node *np = dev->of_node; - unsigned i; - - for (i = 0; ; i++) { - struct device_node *node; - - node = of_parse_phandle(np, name, i); - if (!node) - break; - - component_match_add(dev, matchptr, compare_of, node); - } - - return 0; -} - /* * Identify what components need to be added by parsing what remote-endpoints * our MDP output ports are connected to. In the case of LVDS on MDP4, there @@ -939,10 +920,31 @@ static int add_display_components(struct device *dev, return ret; } +/* + * We don't know what's the best binding to link the gpu with the drm device. + * Fow now, we just hunt for all the possible gpus that we support, and add them + * as components. + */ +static const struct of_device_id msm_gpu_match[] = { + { .compatible = "qcom,adreno-3xx" }, + { .compatible = "qcom,kgsl-3d0" }, + { }, +}; + static int add_gpu_components(struct device *dev, struct component_match **matchptr) { - return add_components(dev, matchptr, "gpus"); + struct device_node *np; + + np = of_find_matching_node(NULL, msm_gpu_match); + if (!np) + return 0; + + component_match_add(dev, matchptr, compare_of, np); + + of_node_put(np); + + return 0; } static int msm_drm_bind(struct device *dev) -- cgit v1.2.3 From 96a611b54f7f0564886d64c43485402fa2530bf4 Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Mon, 30 May 2016 17:02:00 +0530 Subject: drm/msm/mdp5: Update compatible strings for MDSS/MDP5 Introduce new compatible strings for the top level MDSS wrapper device, and the MDP5 device. Previously, the "qcom,mdp5" and "qcom,mdss_mdp" compatible strings were used to match the top level platform_device (which was also tied to the top level drm_device struct). Now, these strings are used to match the MDP5 platform device. Use "qcom,mdss" as the compatible string for top level MDSS device. This is now used to match the top level platform_device (which is tied to the drm_device struct). Signed-off-by: Archit Taneja Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c | 10 +++++++++- drivers/gpu/drm/msm/msm_drv.c | 6 ++---- 2 files changed, 11 insertions(+), 5 deletions(-) (limited to 'drivers/gpu/drm/msm/msm_drv.c') diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c index 174d7e7969fd..ed7143d35b25 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c @@ -809,12 +809,20 @@ static int mdp5_dev_remove(struct platform_device *pdev) return 0; } +static const struct of_device_id mdp5_dt_match[] = { + { .compatible = "qcom,mdp5", }, + /* to support downstream DT files */ + { .compatible = "qcom,mdss_mdp", }, + {} +}; +MODULE_DEVICE_TABLE(of, mdp5_dt_match); + static struct platform_driver mdp5_driver = { .probe = mdp5_dev_probe, .remove = mdp5_dev_remove, .driver = { .name = "msm_mdp", - /* Add a DT match field once we move to new hierarchy */ + .of_match_table = mdp5_dt_match, }, }; diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 66371f23cc22..435a8f90c290 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -992,10 +992,8 @@ static int msm_pdev_remove(struct platform_device *pdev) } static const struct of_device_id dt_match[] = { - { .compatible = "qcom,mdp4", .data = (void *) 4 }, /* mdp4 */ - { .compatible = "qcom,mdp5", .data = (void *) 5 }, /* mdp5 */ - /* to support downstream DT files */ - { .compatible = "qcom,mdss_mdp", .data = (void *) 5 }, /* mdp5 */ + { .compatible = "qcom,mdp4", .data = (void *)4 }, /* MDP4 */ + { .compatible = "qcom,mdss", .data = (void *)5 }, /* MDP5 MDSS */ {} }; MODULE_DEVICE_TABLE(of, dt_match); -- cgit v1.2.3 From 4cd33c48ea25ba17e9d0383fe914c3e58b48f7dd Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Tue, 17 May 2016 15:44:49 -0400 Subject: drm/msm: add madvise ioctl Doesn't do anything too interesting until we wire up shrinker. Pretty much lifted from i915. Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_drv.c | 39 +++++++++++++++++++++++++++++++++++++++ drivers/gpu/drm/msm/msm_drv.h | 1 + drivers/gpu/drm/msm/msm_gem.c | 35 +++++++++++++++++++++++++++++++++-- drivers/gpu/drm/msm/msm_gem.h | 5 +++++ include/uapi/drm/msm_drm.h | 25 ++++++++++++++++++++++++- 5 files changed, 102 insertions(+), 3 deletions(-) (limited to 'drivers/gpu/drm/msm/msm_drv.c') diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 435a8f90c290..00881f3ed32e 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -690,6 +690,44 @@ static int msm_ioctl_wait_fence(struct drm_device *dev, void *data, return msm_wait_fence(priv->gpu->fctx, args->fence, &timeout, true); } +static int msm_ioctl_gem_madvise(struct drm_device *dev, void *data, + struct drm_file *file) +{ + struct drm_msm_gem_madvise *args = data; + struct drm_gem_object *obj; + int ret; + + switch (args->madv) { + case MSM_MADV_DONTNEED: + case MSM_MADV_WILLNEED: + break; + default: + return -EINVAL; + } + + ret = mutex_lock_interruptible(&dev->struct_mutex); + if (ret) + return ret; + + obj = drm_gem_object_lookup(file, args->handle); + if (!obj) { + ret = -ENOENT; + goto unlock; + } + + ret = msm_gem_madvise(obj, args->madv); + if (ret >= 0) { + args->retained = ret; + ret = 0; + } + + drm_gem_object_unreference(obj); + +unlock: + mutex_unlock(&dev->struct_mutex); + return ret; +} + static const struct drm_ioctl_desc msm_ioctls[] = { DRM_IOCTL_DEF_DRV(MSM_GET_PARAM, msm_ioctl_get_param, DRM_AUTH|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(MSM_GEM_NEW, msm_ioctl_gem_new, DRM_AUTH|DRM_RENDER_ALLOW), @@ -698,6 +736,7 @@ static const struct drm_ioctl_desc msm_ioctls[] = { DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_FINI, msm_ioctl_gem_cpu_fini, DRM_AUTH|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(MSM_GEM_SUBMIT, msm_ioctl_gem_submit, DRM_AUTH|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(MSM_WAIT_FENCE, msm_ioctl_wait_fence, DRM_AUTH|DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(MSM_GEM_MADVISE, msm_ioctl_gem_madvise, DRM_AUTH|DRM_RENDER_ALLOW), }; static const struct vm_operations_struct vm_ops = { diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h index be01e3895178..a49d7fd67ec3 100644 --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -195,6 +195,7 @@ int msm_gem_prime_pin(struct drm_gem_object *obj); void msm_gem_prime_unpin(struct drm_gem_object *obj); void *msm_gem_vaddr_locked(struct drm_gem_object *obj); void *msm_gem_vaddr(struct drm_gem_object *obj); +int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv); int msm_gem_sync_object(struct drm_gem_object *obj, struct msm_fence_context *fctx, bool exclusive); void msm_gem_move_to_active(struct drm_gem_object *obj, diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c index 69836f5685b1..c40db08647d1 100644 --- a/drivers/gpu/drm/msm/msm_gem.c +++ b/drivers/gpu/drm/msm/msm_gem.c @@ -413,6 +413,21 @@ void *msm_gem_vaddr(struct drm_gem_object *obj) return ret; } +/* Update madvise status, returns true if not purged, else + * false or -errno. + */ +int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) +{ + struct msm_gem_object *msm_obj = to_msm_bo(obj); + + WARN_ON(!mutex_is_locked(&obj->dev->struct_mutex)); + + if (msm_obj->madv != __MSM_MADV_PURGED) + msm_obj->madv = madv; + + return (msm_obj->madv != __MSM_MADV_PURGED); +} + /* must be called before _move_to_active().. */ int msm_gem_sync_object(struct drm_gem_object *obj, struct msm_fence_context *fctx, bool exclusive) @@ -464,6 +479,7 @@ void msm_gem_move_to_active(struct drm_gem_object *obj, struct msm_gpu *gpu, bool exclusive, struct fence *fence) { struct msm_gem_object *msm_obj = to_msm_bo(obj); + WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED); msm_obj->gpu = gpu; if (exclusive) reservation_object_add_excl_fence(msm_obj->resv, fence); @@ -532,13 +548,27 @@ void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m) struct reservation_object_list *fobj; struct fence *fence; uint64_t off = drm_vma_node_start(&obj->vma_node); + const char *madv; WARN_ON(!mutex_is_locked(&obj->dev->struct_mutex)); - seq_printf(m, "%08x: %c %2d (%2d) %08llx %p %zu\n", + switch (msm_obj->madv) { + case __MSM_MADV_PURGED: + madv = " purged"; + break; + case MSM_MADV_DONTNEED: + madv = " purgeable"; + break; + case MSM_MADV_WILLNEED: + default: + madv = ""; + break; + } + + seq_printf(m, "%08x: %c %2d (%2d) %08llx %p %zu%s\n", msm_obj->flags, is_active(msm_obj) ? 'A' : 'I', obj->name, obj->refcount.refcount.counter, - off, msm_obj->vaddr, obj->size); + off, msm_obj->vaddr, obj->size, madv); rcu_read_lock(); fobj = rcu_dereference(robj->fence); @@ -688,6 +718,7 @@ static int msm_gem_new_impl(struct drm_device *dev, msm_obj->vram_node = (void *)&msm_obj[1]; msm_obj->flags = flags; + msm_obj->madv = MSM_MADV_WILLNEED; if (resv) { msm_obj->resv = resv; diff --git a/drivers/gpu/drm/msm/msm_gem.h b/drivers/gpu/drm/msm/msm_gem.h index 9facd4b6ffd9..fa8e1f16f18e 100644 --- a/drivers/gpu/drm/msm/msm_gem.h +++ b/drivers/gpu/drm/msm/msm_gem.h @@ -29,6 +29,11 @@ struct msm_gem_object { uint32_t flags; + /** + * Advice: are the backing pages purgeable? + */ + uint8_t madv; + /* And object is either: * inactive - on priv->inactive_list * active - on one one of the gpu's active_list.. well, at diff --git a/include/uapi/drm/msm_drm.h b/include/uapi/drm/msm_drm.h index bf19d2cd9078..49f778de8e06 100644 --- a/include/uapi/drm/msm_drm.h +++ b/include/uapi/drm/msm_drm.h @@ -201,6 +201,27 @@ struct drm_msm_wait_fence { struct drm_msm_timespec timeout; /* in */ }; +/* madvise provides a way to tell the kernel in case a buffers contents + * can be discarded under memory pressure, which is useful for userspace + * bo cache where we want to optimistically hold on to buffer allocate + * and potential mmap, but allow the pages to be discarded under memory + * pressure. + * + * Typical usage would involve madvise(DONTNEED) when buffer enters BO + * cache, and madvise(WILLNEED) if trying to recycle buffer from BO cache. + * In the WILLNEED case, 'retained' indicates to userspace whether the + * backing pages still exist. + */ +#define MSM_MADV_WILLNEED 0 /* backing pages are needed, status returned in 'retained' */ +#define MSM_MADV_DONTNEED 1 /* backing pages not needed */ +#define __MSM_MADV_PURGED 2 /* internal state */ + +struct drm_msm_gem_madvise { + __u32 handle; /* in, GEM handle */ + __u32 madv; /* in, MSM_MADV_x */ + __u32 retained; /* out, whether backing store still exists */ +}; + #define DRM_MSM_GET_PARAM 0x00 /* placeholder: #define DRM_MSM_SET_PARAM 0x01 @@ -211,7 +232,8 @@ struct drm_msm_wait_fence { #define DRM_MSM_GEM_CPU_FINI 0x05 #define DRM_MSM_GEM_SUBMIT 0x06 #define DRM_MSM_WAIT_FENCE 0x07 -#define DRM_MSM_NUM_IOCTLS 0x08 +#define DRM_MSM_GEM_MADVISE 0x08 +#define DRM_MSM_NUM_IOCTLS 0x09 #define DRM_IOCTL_MSM_GET_PARAM DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GET_PARAM, struct drm_msm_param) #define DRM_IOCTL_MSM_GEM_NEW DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GEM_NEW, struct drm_msm_gem_new) @@ -220,6 +242,7 @@ struct drm_msm_wait_fence { #define DRM_IOCTL_MSM_GEM_CPU_FINI DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_GEM_CPU_FINI, struct drm_msm_gem_cpu_fini) #define DRM_IOCTL_MSM_GEM_SUBMIT DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GEM_SUBMIT, struct drm_msm_gem_submit) #define DRM_IOCTL_MSM_WAIT_FENCE DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_WAIT_FENCE, struct drm_msm_wait_fence) +#define DRM_IOCTL_MSM_GEM_MADVISE DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GEM_MADVISE, struct drm_msm_gem_madvise) #if defined(__cplusplus) } -- cgit v1.2.3 From 68209390f116034449fa6a3ae03f7b100b3d894a Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Tue, 17 May 2016 16:19:32 -0400 Subject: drm/msm: shrinker support For a first step, only purge obj->madv==DONTNEED objects. We could be more agressive and next try unpinning inactive objects.. but that is only useful if you have swap. Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/Makefile | 1 + drivers/gpu/drm/msm/msm_drv.c | 5 ++ drivers/gpu/drm/msm/msm_drv.h | 8 +++ drivers/gpu/drm/msm/msm_gem.c | 32 +++++++++ drivers/gpu/drm/msm/msm_gem.h | 6 ++ drivers/gpu/drm/msm/msm_gem_shrinker.c | 128 +++++++++++++++++++++++++++++++++ 6 files changed, 180 insertions(+) create mode 100644 drivers/gpu/drm/msm/msm_gem_shrinker.c (limited to 'drivers/gpu/drm/msm/msm_drv.c') diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile index 4727d045f179..4e2806cf778c 100644 --- a/drivers/gpu/drm/msm/Makefile +++ b/drivers/gpu/drm/msm/Makefile @@ -46,6 +46,7 @@ msm-y := \ msm_fence.o \ msm_gem.o \ msm_gem_prime.o \ + msm_gem_shrinker.o \ msm_gem_submit.o \ msm_gpu.o \ msm_iommu.o \ diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 00881f3ed32e..f3b8f69ea9ae 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -195,6 +195,8 @@ static int msm_drm_uninit(struct device *dev) kfree(vbl_ev); } + msm_gem_shrinker_cleanup(ddev); + drm_kms_helper_poll_fini(ddev); drm_dev_unregister(ddev); @@ -350,6 +352,7 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv) } ddev->dev_private = priv; + priv->dev = ddev; ret = msm_mdss_init(ddev); if (ret) { @@ -382,6 +385,8 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv) if (ret) goto fail; + msm_gem_shrinker_init(ddev); + switch (get_mdp_ver(pdev)) { case 4: kms = mdp4_kms_init(ddev); diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h index a49d7fd67ec3..4755894d9229 100644 --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -78,6 +78,8 @@ struct msm_vblank_ctrl { struct msm_drm_private { + struct drm_device *dev; + struct msm_kms *kms; /* subordinate devices, if present: */ @@ -151,6 +153,8 @@ struct msm_drm_private { struct drm_mm mm; } vram; + struct shrinker shrinker; + struct msm_vblank_ctrl vblank_ctrl; }; @@ -169,6 +173,9 @@ void msm_gem_submit_free(struct msm_gem_submit *submit); int msm_ioctl_gem_submit(struct drm_device *dev, void *data, struct drm_file *file); +void msm_gem_shrinker_init(struct drm_device *dev); +void msm_gem_shrinker_cleanup(struct drm_device *dev); + int msm_gem_mmap_obj(struct drm_gem_object *obj, struct vm_area_struct *vma); int msm_gem_mmap(struct file *filp, struct vm_area_struct *vma); @@ -196,6 +203,7 @@ void msm_gem_prime_unpin(struct drm_gem_object *obj); void *msm_gem_vaddr_locked(struct drm_gem_object *obj); void *msm_gem_vaddr(struct drm_gem_object *obj); int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv); +void msm_gem_purge(struct drm_gem_object *obj); int msm_gem_sync_object(struct drm_gem_object *obj, struct msm_fence_context *fctx, bool exclusive); void msm_gem_move_to_active(struct drm_gem_object *obj, diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c index 2636c279d504..444d0b5680f5 100644 --- a/drivers/gpu/drm/msm/msm_gem.c +++ b/drivers/gpu/drm/msm/msm_gem.c @@ -448,6 +448,38 @@ int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) return (msm_obj->madv != __MSM_MADV_PURGED); } +void msm_gem_purge(struct drm_gem_object *obj) +{ + struct drm_device *dev = obj->dev; + struct msm_gem_object *msm_obj = to_msm_bo(obj); + + WARN_ON(!mutex_is_locked(&dev->struct_mutex)); + WARN_ON(!is_purgeable(msm_obj)); + WARN_ON(obj->import_attach); + + put_iova(obj); + + vunmap(msm_obj->vaddr); + msm_obj->vaddr = NULL; + + put_pages(obj); + + msm_obj->madv = __MSM_MADV_PURGED; + + drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); + drm_gem_free_mmap_offset(obj); + + /* Our goal here is to return as much of the memory as + * is possible back to the system as we are called from OOM. + * To do this we must instruct the shmfs to drop all of its + * backing pages, *now*. + */ + shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); + + invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, + 0, (loff_t)-1); +} + /* must be called before _move_to_active().. */ int msm_gem_sync_object(struct drm_gem_object *obj, struct msm_fence_context *fctx, bool exclusive) diff --git a/drivers/gpu/drm/msm/msm_gem.h b/drivers/gpu/drm/msm/msm_gem.h index fa8e1f16f18e..631dab56b8fd 100644 --- a/drivers/gpu/drm/msm/msm_gem.h +++ b/drivers/gpu/drm/msm/msm_gem.h @@ -77,6 +77,12 @@ static inline bool is_active(struct msm_gem_object *msm_obj) return msm_obj->gpu != NULL; } +static inline bool is_purgeable(struct msm_gem_object *msm_obj) +{ + return (msm_obj->madv == MSM_MADV_DONTNEED) && msm_obj->sgt && + !msm_obj->base.dma_buf && !msm_obj->base.import_attach; +} + #define MAX_CMDS 4 /* Created per submit-ioctl, to track bo's and cmdstream bufs, etc, diff --git a/drivers/gpu/drm/msm/msm_gem_shrinker.c b/drivers/gpu/drm/msm/msm_gem_shrinker.c new file mode 100644 index 000000000000..70fba9baddde --- /dev/null +++ b/drivers/gpu/drm/msm/msm_gem_shrinker.c @@ -0,0 +1,128 @@ +/* + * Copyright (C) 2016 Red Hat + * Author: Rob Clark + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see . + */ + +#include "msm_drv.h" +#include "msm_gem.h" + +static bool mutex_is_locked_by(struct mutex *mutex, struct task_struct *task) +{ + if (!mutex_is_locked(mutex)) + return false; + +#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_MUTEXES) + return mutex->owner == task; +#else + /* Since UP may be pre-empted, we cannot assume that we own the lock */ + return false; +#endif +} + +static bool msm_gem_shrinker_lock(struct drm_device *dev, bool *unlock) +{ + if (!mutex_trylock(&dev->struct_mutex)) { + if (!mutex_is_locked_by(&dev->struct_mutex, current)) + return false; + *unlock = false; + } else { + *unlock = true; + } + + return true; +} + + +static unsigned long +msm_gem_shrinker_count(struct shrinker *shrinker, struct shrink_control *sc) +{ + struct msm_drm_private *priv = + container_of(shrinker, struct msm_drm_private, shrinker); + struct drm_device *dev = priv->dev; + struct msm_gem_object *msm_obj; + unsigned long count = 0; + bool unlock; + + if (!msm_gem_shrinker_lock(dev, &unlock)) + return 0; + + list_for_each_entry(msm_obj, &priv->inactive_list, mm_list) { + if (is_purgeable(msm_obj)) + count += msm_obj->base.size >> PAGE_SHIFT; + } + + if (unlock) + mutex_unlock(&dev->struct_mutex); + + return count; +} + +static unsigned long +msm_gem_shrinker_scan(struct shrinker *shrinker, struct shrink_control *sc) +{ + struct msm_drm_private *priv = + container_of(shrinker, struct msm_drm_private, shrinker); + struct drm_device *dev = priv->dev; + struct msm_gem_object *msm_obj; + unsigned long freed = 0; + bool unlock; + + if (!msm_gem_shrinker_lock(dev, &unlock)) + return SHRINK_STOP; + + list_for_each_entry(msm_obj, &priv->inactive_list, mm_list) { + if (freed >= sc->nr_to_scan) + break; + if (is_purgeable(msm_obj)) { + msm_gem_purge(&msm_obj->base); + freed += msm_obj->base.size >> PAGE_SHIFT; + } + } + + if (unlock) + mutex_unlock(&dev->struct_mutex); + + if (freed > 0) + pr_info_ratelimited("Purging %lu bytes\n", freed << PAGE_SHIFT); + + return freed; +} + +/** + * msm_gem_shrinker_init - Initialize msm shrinker + * @dev_priv: msm device + * + * This function registers and sets up the msm shrinker. + */ +void msm_gem_shrinker_init(struct drm_device *dev) +{ + struct msm_drm_private *priv = dev->dev_private; + priv->shrinker.count_objects = msm_gem_shrinker_count; + priv->shrinker.scan_objects = msm_gem_shrinker_scan; + priv->shrinker.seeks = DEFAULT_SEEKS; + WARN_ON(register_shrinker(&priv->shrinker)); +} + +/** + * msm_gem_shrinker_cleanup - Clean up msm shrinker + * @dev_priv: msm device + * + * This function unregisters the msm shrinker. + */ +void msm_gem_shrinker_cleanup(struct drm_device *dev) +{ + struct msm_drm_private *priv = dev->dev_private; + unregister_shrinker(&priv->shrinker); +} -- cgit v1.2.3 From a8d854c102f880984c9c21241483716ee4054ff2 Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Wed, 1 Jun 2016 14:02:02 -0400 Subject: drm/msm: bump kernel api version Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_drv.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) (limited to 'drivers/gpu/drm/msm/msm_drv.c') diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index f3b8f69ea9ae..9cfa348fd2bb 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -21,6 +21,16 @@ #include "msm_gpu.h" #include "msm_kms.h" + +/* + * MSM driver version: + * - 1.0.0 - initial interface + * - 1.1.0 - adds madvise, and support for submits with > 4 cmd buffers + */ +#define MSM_VERSION_MAJOR 1 +#define MSM_VERSION_MINOR 1 +#define MSM_VERSION_PATCHLEVEL 0 + static void msm_fb_output_poll_changed(struct drm_device *dev) { struct msm_drm_private *priv = dev->dev_private; @@ -807,8 +817,9 @@ static struct drm_driver msm_driver = { .name = "msm", .desc = "MSM Snapdragon DRM", .date = "20130625", - .major = 1, - .minor = 0, + .major = MSM_VERSION_MAJOR, + .minor = MSM_VERSION_MINOR, + .patchlevel = MSM_VERSION_PATCHLEVEL, }; #ifdef CONFIG_PM_SLEEP -- cgit v1.2.3 From 2ca41c176a5d2197572153bf543a3f758c13a4d3 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Mon, 4 Jul 2016 16:49:50 +0800 Subject: drm/msm: add missing of_node_put after calling of_parse_phandle of_node_put needs to be called when the device node which is got from of_parse_phandle has finished using. Signed-off-by: Peter Chen [rebased on top of Archit's DT rework, so looses one hunk] Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_drv.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/gpu/drm/msm/msm_drv.c') diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 9cfa348fd2bb..26f859ec24b3 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -294,6 +294,7 @@ static int msm_init_vram(struct drm_device *dev) if (node) { struct resource r; ret = of_address_to_resource(node, 0, &r); + of_node_put(node); if (ret) return ret; size = r.end - r.start; -- cgit v1.2.3