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drm/v3d: Enable V3D to use different PAGE_SIZE

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Currently, the V3D driver uses PAGE_SHIFT over the assumption that
PAGE_SHIFT = 12, as the PAGE_SIZE = 4KB. But, the RPi 5 is using
PAGE_SIZE = 16KB, so the MMU PAGE_SHIFT is different than the system's
PAGE_SHIFT.

Enable V3D to be used in system's with any PAGE_SIZE by making sure that
everything MMU-related uses the MMU page shift.

Signed-off-by: Maíra Canal <mcanal@igalia.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240214193503.164462-1-mcanal@igalia.com
This commit is contained in:
Maíra Canal 2024-02-14 16:34:52 -03:00
parent 155ad86b5e
commit 51b76c1f30
No known key found for this signature in database
GPG Key ID: 6E388F05AB35B7CF
5 changed files with 10 additions and 10 deletions
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12
drivers/gpu/drm/v3d/v3d_bo.c
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@ -40,7 +40,7 @@ void v3d_free_object(struct drm_gem_object *obj)
mutex_lock(&v3d->bo_lock);
v3d->bo_stats.num_allocated--;
v3d->bo_stats.pages_allocated -= obj->size >> PAGE_SHIFT;
v3d->bo_stats.pages_allocated -= obj->size >> V3D_MMU_PAGE_SHIFT;
mutex_unlock(&v3d->bo_lock);
spin_lock(&v3d->mm_lock);
@ -109,8 +109,8 @@ v3d_bo_create_finish(struct drm_gem_object *obj)
* lifetime of the BO.
*/
ret = drm_mm_insert_node_generic(&v3d->mm, &bo->node,
obj->size >> PAGE_SHIFT,
GMP_GRANULARITY >> PAGE_SHIFT, 0, 0);
obj->size >> V3D_MMU_PAGE_SHIFT,
GMP_GRANULARITY >> V3D_MMU_PAGE_SHIFT, 0, 0);
spin_unlock(&v3d->mm_lock);
if (ret)
return ret;
@ -118,7 +118,7 @@ v3d_bo_create_finish(struct drm_gem_object *obj)
/* Track stats for /debug/dri/n/bo_stats. */
mutex_lock(&v3d->bo_lock);
v3d->bo_stats.num_allocated++;
v3d->bo_stats.pages_allocated += obj->size >> PAGE_SHIFT;
v3d->bo_stats.pages_allocated += obj->size >> V3D_MMU_PAGE_SHIFT;
mutex_unlock(&v3d->bo_lock);
v3d_mmu_insert_ptes(bo);
@ -201,7 +201,7 @@ int v3d_create_bo_ioctl(struct drm_device *dev, void *data,
if (IS_ERR(bo))
return PTR_ERR(bo);
args->offset = bo->node.start << PAGE_SHIFT;
args->offset = bo->node.start << V3D_MMU_PAGE_SHIFT;
ret = drm_gem_handle_create(file_priv, &bo->base.base, &args->handle);
drm_gem_object_put(&bo->base.base);
@ -246,7 +246,7 @@ int v3d_get_bo_offset_ioctl(struct drm_device *dev, void *data,
}
bo = to_v3d_bo(gem_obj);
args->offset = bo->node.start << PAGE_SHIFT;
args->offset = bo->node.start << V3D_MMU_PAGE_SHIFT;
drm_gem_object_put(gem_obj);
return 0;

2
drivers/gpu/drm/v3d/v3d_debugfs.c
View File

@ -219,7 +219,7 @@ static int v3d_debugfs_bo_stats(struct seq_file *m, void *unused)
seq_printf(m, "allocated bos: %d\n",
v3d->bo_stats.num_allocated);
seq_printf(m, "allocated bo size (kb): %ld\n",
(long)v3d->bo_stats.pages_allocated << (PAGE_SHIFT - 10));
(long)v3d->bo_stats.pages_allocated << (V3D_MMU_PAGE_SHIFT - 10));
mutex_unlock(&v3d->bo_lock);
return 0;

2
drivers/gpu/drm/v3d/v3d_drv.h
View File

@ -19,6 +19,8 @@ struct reset_control;
#define GMP_GRANULARITY (128 * 1024)
#define V3D_MMU_PAGE_SHIFT 12
#define V3D_MAX_QUEUES (V3D_CPU + 1)
static inline char *v3d_queue_to_string(enum v3d_queue queue)

2
drivers/gpu/drm/v3d/v3d_irq.c
View File

@ -70,7 +70,7 @@ v3d_overflow_mem_work(struct work_struct *work)
list_add_tail(&bo->unref_head, &v3d->bin_job->render->unref_list);
spin_unlock_irqrestore(&v3d->job_lock, irqflags);
V3D_CORE_WRITE(0, V3D_PTB_BPOA, bo->node.start << PAGE_SHIFT);
V3D_CORE_WRITE(0, V3D_PTB_BPOA, bo->node.start << V3D_MMU_PAGE_SHIFT);
V3D_CORE_WRITE(0, V3D_PTB_BPOS, obj->size);
out:

2
drivers/gpu/drm/v3d/v3d_mmu.c
View File

@ -21,8 +21,6 @@
#include "v3d_drv.h"
#include "v3d_regs.h"
#define V3D_MMU_PAGE_SHIFT 12
/* Note: All PTEs for the 1MB superpage must be filled with the
* superpage bit set.
*/