Merge tag 'drm-etnaviv-next-2025-01-08' of https://git.pengutronix.de/git/lst/linux into drm-next

- cleanups
- add fdinfo memory support
- add explicit reset handling

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Lucas Stach <l.stach@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/41c1e476c6014010247d164ac8d21bd6f922cce1.camel@pengutronix.de

Author: airlied

drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.c

@@ -9,7 +9,6 @@
 #include "etnaviv_gem.h"
 #include "etnaviv_gpu.h"
 #include "etnaviv_mmu.h"
-#include "etnaviv_perfmon.h"
 
 #define SUBALLOC_SIZE		SZ_512K
 #define SUBALLOC_GRANULE	SZ_4K
@@ -100,7 +99,7 @@ int etnaviv_cmdbuf_init(struct etnaviv_cmdbuf_suballoc *suballoc,
 		mutex_unlock(&suballoc->lock);
 		ret = wait_event_interruptible_timeout(suballoc->free_event,
 						       suballoc->free_space,
-						       msecs_to_jiffies(10 * 1000));
+						       secs_to_jiffies(10));
 		if (!ret) {
 			dev_err(suballoc->dev,
 				"Timeout waiting for cmdbuf space\n");

drivers/gpu/drm/etnaviv/etnaviv_drv.c

@@ -488,7 +488,16 @@ static const struct drm_ioctl_desc etnaviv_ioctls[] = {
 	ETNA_IOCTL(PM_QUERY_SIG, pm_query_sig, DRM_RENDER_ALLOW),
 };
 
-DEFINE_DRM_GEM_FOPS(fops);
+static void etnaviv_show_fdinfo(struct drm_printer *p, struct drm_file *file)
+{
+	drm_show_memory_stats(p, file);
+}
+
+static const struct file_operations fops = {
+	.owner = THIS_MODULE,
+	DRM_GEM_FOPS,
+	.show_fdinfo = drm_show_fdinfo,
+};
 
 static const struct drm_driver etnaviv_drm_driver = {
 	.driver_features    = DRIVER_GEM | DRIVER_RENDER,
@@ -498,6 +507,7 @@ static const struct drm_driver etnaviv_drm_driver = {
 #ifdef CONFIG_DEBUG_FS
 	.debugfs_init       = etnaviv_debugfs_init,
 #endif
+	.show_fdinfo        = etnaviv_show_fdinfo,
 	.ioctls             = etnaviv_ioctls,
 	.num_ioctls         = DRM_ETNAVIV_NUM_IOCTLS,
 	.fops               = &fops,

drivers/gpu/drm/etnaviv/etnaviv_gem.c

@@ -342,15 +342,27 @@ void *etnaviv_gem_vmap(struct drm_gem_object *obj)
 static void *etnaviv_gem_vmap_impl(struct etnaviv_gem_object *obj)
 {
 	struct page **pages;
+	pgprot_t prot;
 
 	lockdep_assert_held(&obj->lock);
 
 	pages = etnaviv_gem_get_pages(obj);
 	if (IS_ERR(pages))
 		return NULL;
 
-	return vmap(pages, obj->base.size >> PAGE_SHIFT,
-			VM_MAP, pgprot_writecombine(PAGE_KERNEL));
+	switch (obj->flags & ETNA_BO_CACHE_MASK) {
+	case ETNA_BO_CACHED:
+		prot = PAGE_KERNEL;
+		break;
+	case ETNA_BO_UNCACHED:
+		prot = pgprot_noncached(PAGE_KERNEL);
+		break;
+	case ETNA_BO_WC:
+	default:
+		prot = pgprot_writecombine(PAGE_KERNEL);
+	}
+
+	return vmap(pages, obj->base.size >> PAGE_SHIFT, VM_MAP, prot);
 }
 
 static inline enum dma_data_direction etnaviv_op_to_dma_dir(u32 op)
@@ -528,6 +540,17 @@ void etnaviv_gem_obj_add(struct drm_device *dev, struct drm_gem_object *obj)
 	mutex_unlock(&priv->gem_lock);
 }
 
+static enum drm_gem_object_status etnaviv_gem_status(struct drm_gem_object *obj)
+{
+	struct etnaviv_gem_object *etnaviv_obj = to_etnaviv_bo(obj);
+	enum drm_gem_object_status status = 0;
+
+	if (etnaviv_obj->pages)
+		status |= DRM_GEM_OBJECT_RESIDENT;
+
+	return status;
+}
+
 static const struct vm_operations_struct vm_ops = {
 	.fault = etnaviv_gem_fault,
 	.open = drm_gem_vm_open,
@@ -541,6 +564,7 @@ static const struct drm_gem_object_funcs etnaviv_gem_object_funcs = {
 	.get_sg_table = etnaviv_gem_prime_get_sg_table,
 	.vmap = etnaviv_gem_prime_vmap,
 	.mmap = etnaviv_gem_mmap,
+	.status = etnaviv_gem_status,
 	.vm_ops = &vm_ops,
 };
 

drivers/gpu/drm/etnaviv/etnaviv_gem.h

@@ -44,9 +44,7 @@ struct etnaviv_gem_object {
 	u32 flags;
 
 	struct list_head gem_node;
-	struct etnaviv_gpu *gpu;     /* non-null if active */
 	atomic_t gpu_active;
-	u32 access;
 
 	struct page **pages;
 	struct sg_table *sgt;

drivers/gpu/drm/etnaviv/etnaviv_gpu.c

@@ -13,6 +13,7 @@
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/regulator/consumer.h>
+#include <linux/reset.h>
 #include <linux/thermal.h>
 
 #include "etnaviv_cmdbuf.h"
@@ -172,6 +173,29 @@ int etnaviv_gpu_get_param(struct etnaviv_gpu *gpu, u32 param, u64 *value)
 	return 0;
 }
 
+static int etnaviv_gpu_reset_deassert(struct etnaviv_gpu *gpu)
+{
+	int ret;
+
+	/*
+	 * 32 core clock cycles (slowest clock) required before deassertion
+	 * 1 microsecond might match all implementations without computation
+	 */
+	usleep_range(1, 2);
+
+	ret = reset_control_deassert(gpu->rst);
+	if (ret)
+		return ret;
+
+	/*
+	 * 128 core clock cycles (slowest clock) required before any activity on AHB
+	 * 1 microsecond might match all implementations without computation
+	 */
+	usleep_range(1, 2);
+
+	return 0;
+}
+
 static inline bool etnaviv_is_model_rev(struct etnaviv_gpu *gpu, u32 model, u32 revision)
 {
 	return gpu->identity.model == model &&
@@ -799,6 +823,12 @@ int etnaviv_gpu_init(struct etnaviv_gpu *gpu)
 		goto pm_put;
 	}
 
+	ret = etnaviv_gpu_reset_deassert(gpu);
+	if (ret) {
+		dev_err(gpu->dev, "GPU reset deassert failed\n");
+		goto fail;
+	}
+
 	etnaviv_hw_identify(gpu);
 
 	if (gpu->identity.model == 0) {
@@ -1860,6 +1890,17 @@ static int etnaviv_gpu_platform_probe(struct platform_device *pdev)
 	if (IS_ERR(gpu->mmio))
 		return PTR_ERR(gpu->mmio);
 
+
+	/* Get Reset: */
+	gpu->rst = devm_reset_control_get_optional_exclusive(&pdev->dev, NULL);
+	if (IS_ERR(gpu->rst))
+		return dev_err_probe(dev, PTR_ERR(gpu->rst),
+				     "failed to get reset\n");
+
+	err = reset_control_assert(gpu->rst);
+	if (err)
+		return dev_err_probe(dev, err, "failed to assert reset\n");
+
 	/* Get Interrupt: */
 	gpu->irq = platform_get_irq(pdev, 0);
 	if (gpu->irq < 0)

drivers/gpu/drm/etnaviv/etnaviv_gpu.h

@@ -93,6 +93,7 @@ struct etnaviv_event {
 struct etnaviv_cmdbuf_suballoc;
 struct regulator;
 struct clk;
+struct reset_control;
 
 #define ETNA_NR_EVENTS 30
 
@@ -158,6 +159,7 @@ struct etnaviv_gpu {
 	struct clk *clk_reg;
 	struct clk *clk_core;
 	struct clk *clk_shader;
+	struct reset_control *rst;
 
 	unsigned int freq_scale;
 	unsigned int fe_waitcycles;

drivers/gpu/drm/etnaviv/etnaviv_mmu.c

@@ -19,12 +19,6 @@ static void etnaviv_context_unmap(struct etnaviv_iommu_context *context,
 	size_t unmapped_page, unmapped = 0;
 	size_t pgsize = SZ_4K;
 
-	if (!IS_ALIGNED(iova | size, pgsize)) {
-		pr_err("unaligned: iova 0x%lx size 0x%zx min_pagesz 0x%zx\n",
-		       iova, size, pgsize);
-		return;
-	}
-
 	while (unmapped < size) {
 		unmapped_page = context->global->ops->unmap(context, iova,
 							    pgsize);
@@ -45,12 +39,6 @@ static int etnaviv_context_map(struct etnaviv_iommu_context *context,
 	size_t orig_size = size;
 	int ret = 0;
 
-	if (!IS_ALIGNED(iova | paddr | size, pgsize)) {
-		pr_err("unaligned: iova 0x%lx pa %pa size 0x%zx min_pagesz 0x%zx\n",
-		       iova, &paddr, size, pgsize);
-		return -EINVAL;
-	}
-
 	while (size) {
 		ret = context->global->ops->map(context, iova, paddr, pgsize,
 						prot);
@@ -82,11 +70,19 @@ static int etnaviv_iommu_map(struct etnaviv_iommu_context *context,
 		return -EINVAL;
 
 	for_each_sgtable_dma_sg(sgt, sg, i) {
-		phys_addr_t pa = sg_dma_address(sg) - sg->offset;
-		unsigned int da_len = sg_dma_len(sg) + sg->offset;
+		phys_addr_t pa = sg_dma_address(sg);
+		unsigned int da_len = sg_dma_len(sg);
 		unsigned int bytes = min_t(unsigned int, da_len, va_len);
 
-		VERB("map[%d]: %08x %pap(%x)", i, iova, &pa, bytes);
+		VERB("map[%d]: %08x %pap(%x)", i, da, &pa, bytes);
+
+		if (!IS_ALIGNED(iova | pa | bytes, SZ_4K)) {
+			dev_err(context->global->dev,
+				"unaligned: iova 0x%x pa %pa size 0x%x\n",
+				iova, &pa, bytes);
+			ret = -EINVAL;
+			goto fail;
+		}
 
 		ret = etnaviv_context_map(context, da, pa, bytes, prot);
 		if (ret)