diff options
Diffstat (limited to 'drivers/gpu/msm/kgsl_iommu.c')
| -rw-r--r-- | drivers/gpu/msm/kgsl_iommu.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/gpu/msm/kgsl_iommu.c b/drivers/gpu/msm/kgsl_iommu.c index 103d290eb681..865cd9d8f498 100644 --- a/drivers/gpu/msm/kgsl_iommu.c +++ b/drivers/gpu/msm/kgsl_iommu.c @@ -96,6 +96,7 @@ static struct kgsl_memdesc *global_pt_entries[GLOBAL_PT_ENTRIES]; static struct kgsl_memdesc *kgsl_global_secure_pt_entry; static int global_pt_count; uint64_t global_pt_alloc; +static struct kgsl_memdesc gpu_qdss_desc; static void kgsl_iommu_unmap_globals(struct kgsl_pagetable *pagetable) { @@ -183,6 +184,51 @@ void kgsl_add_global_secure_entry(struct kgsl_device *device, kgsl_global_secure_pt_entry = memdesc; } +struct kgsl_memdesc *kgsl_iommu_get_qdss_global_entry(void) +{ + return &gpu_qdss_desc; +} + +static void kgsl_setup_qdss_desc(struct kgsl_device *device) +{ + int result = 0; + uint32_t gpu_qdss_entry[2]; + + if (!of_find_property(device->pdev->dev.of_node, + "qcom,gpu-qdss-stm", NULL)) + return; + + if (of_property_read_u32_array(device->pdev->dev.of_node, + "qcom,gpu-qdss-stm", gpu_qdss_entry, 2)) { + KGSL_CORE_ERR("Failed to read gpu qdss dts entry\n"); + return; + } + + gpu_qdss_desc.flags = 0; + gpu_qdss_desc.priv = 0; + gpu_qdss_desc.physaddr = gpu_qdss_entry[0]; + gpu_qdss_desc.size = gpu_qdss_entry[1]; + gpu_qdss_desc.pagetable = NULL; + gpu_qdss_desc.ops = NULL; + gpu_qdss_desc.dev = device->dev->parent; + gpu_qdss_desc.hostptr = NULL; + + result = memdesc_sg_dma(&gpu_qdss_desc, gpu_qdss_desc.physaddr, + gpu_qdss_desc.size); + if (result) { + KGSL_CORE_ERR("memdesc_sg_dma failed: %d\n", result); + return; + } + + kgsl_mmu_add_global(device, &gpu_qdss_desc); +} + +static inline void kgsl_cleanup_qdss_desc(struct kgsl_mmu *mmu) +{ + kgsl_iommu_remove_global(mmu, &gpu_qdss_desc); + kgsl_sharedmem_free(&gpu_qdss_desc); +} + static inline void _iommu_sync_mmu_pc(bool lock) { @@ -1265,6 +1311,7 @@ static void kgsl_iommu_close(struct kgsl_mmu *mmu) kgsl_iommu_remove_global(mmu, &iommu->setstate); kgsl_sharedmem_free(&iommu->setstate); + kgsl_cleanup_qdss_desc(mmu); } static int _setstate_alloc(struct kgsl_device *device, @@ -1336,6 +1383,7 @@ static int kgsl_iommu_init(struct kgsl_mmu *mmu) } kgsl_iommu_add_global(mmu, &iommu->setstate); + kgsl_setup_qdss_desc(device); done: if (status) @@ -2341,6 +2389,7 @@ struct kgsl_mmu_ops kgsl_iommu_ops = { .mmu_add_global = kgsl_iommu_add_global, .mmu_remove_global = kgsl_iommu_remove_global, .mmu_getpagetable = kgsl_iommu_getpagetable, + .mmu_get_qdss_global_entry = kgsl_iommu_get_qdss_global_entry, .probe = kgsl_iommu_probe, }; |