Commit 4bced8be authored by Steven Price's avatar Steven Price Committed by Rob Herring

drm/panfrost: Export all GPU feature registers

Midgard/Bifrost GPUs have a bunch of feature registers providing details
of what the hardware supports. Panfrost already reads these, this patch
exports them all to user space so that the jobs created by the user space
driver can be tuned for the particular hardware implementation.
Signed-off-by: default avatarSteven Price <steven.price@arm.com>
Reviewed-by: default avatarAlyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: default avatarRob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190724105626.53552-1-steven.price@arm.com
parent a1b27e99
......@@ -43,6 +43,7 @@ struct panfrost_features {
u32 js_features[16];
u32 nr_core_groups;
u32 thread_tls_alloc;
unsigned long hw_features[64 / BITS_PER_LONG];
unsigned long hw_issues[64 / BITS_PER_LONG];
......
......@@ -32,10 +32,42 @@ static int panfrost_ioctl_get_param(struct drm_device *ddev, void *data, struct
if (param->pad != 0)
return -EINVAL;
#define PANFROST_FEATURE(name, member) \
case DRM_PANFROST_PARAM_ ## name: \
param->value = pfdev->features.member; \
break
#define PANFROST_FEATURE_ARRAY(name, member, max) \
case DRM_PANFROST_PARAM_ ## name ## 0 ... \
DRM_PANFROST_PARAM_ ## name ## max: \
param->value = pfdev->features.member[param->param - \
DRM_PANFROST_PARAM_ ## name ## 0]; \
break
switch (param->param) {
case DRM_PANFROST_PARAM_GPU_PROD_ID:
param->value = pfdev->features.id;
break;
PANFROST_FEATURE(GPU_PROD_ID, id);
PANFROST_FEATURE(GPU_REVISION, revision);
PANFROST_FEATURE(SHADER_PRESENT, shader_present);
PANFROST_FEATURE(TILER_PRESENT, tiler_present);
PANFROST_FEATURE(L2_PRESENT, l2_present);
PANFROST_FEATURE(STACK_PRESENT, stack_present);
PANFROST_FEATURE(AS_PRESENT, as_present);
PANFROST_FEATURE(JS_PRESENT, js_present);
PANFROST_FEATURE(L2_FEATURES, l2_features);
PANFROST_FEATURE(CORE_FEATURES, core_features);
PANFROST_FEATURE(TILER_FEATURES, tiler_features);
PANFROST_FEATURE(MEM_FEATURES, mem_features);
PANFROST_FEATURE(MMU_FEATURES, mmu_features);
PANFROST_FEATURE(THREAD_FEATURES, thread_features);
PANFROST_FEATURE(MAX_THREADS, max_threads);
PANFROST_FEATURE(THREAD_MAX_WORKGROUP_SZ,
thread_max_workgroup_sz);
PANFROST_FEATURE(THREAD_MAX_BARRIER_SZ,
thread_max_barrier_sz);
PANFROST_FEATURE(COHERENCY_FEATURES, coherency_features);
PANFROST_FEATURE_ARRAY(TEXTURE_FEATURES, texture_features, 3);
PANFROST_FEATURE_ARRAY(JS_FEATURES, js_features, 15);
PANFROST_FEATURE(NR_CORE_GROUPS, nr_core_groups);
PANFROST_FEATURE(THREAD_TLS_ALLOC, thread_tls_alloc);
default:
return -EINVAL;
}
......
......@@ -232,6 +232,8 @@ static void panfrost_gpu_init_features(struct panfrost_device *pfdev)
pfdev->features.stack_present = gpu_read(pfdev, GPU_STACK_PRESENT_LO);
pfdev->features.stack_present |= (u64)gpu_read(pfdev, GPU_STACK_PRESENT_HI) << 32;
pfdev->features.thread_tls_alloc = gpu_read(pfdev, GPU_THREAD_TLS_ALLOC);
gpu_id = gpu_read(pfdev, GPU_ID);
pfdev->features.revision = gpu_id & 0xffff;
pfdev->features.id = gpu_id >> 16;
......
......@@ -127,6 +127,45 @@ struct drm_panfrost_mmap_bo {
enum drm_panfrost_param {
DRM_PANFROST_PARAM_GPU_PROD_ID,
DRM_PANFROST_PARAM_GPU_REVISION,
DRM_PANFROST_PARAM_SHADER_PRESENT,
DRM_PANFROST_PARAM_TILER_PRESENT,
DRM_PANFROST_PARAM_L2_PRESENT,
DRM_PANFROST_PARAM_STACK_PRESENT,
DRM_PANFROST_PARAM_AS_PRESENT,
DRM_PANFROST_PARAM_JS_PRESENT,
DRM_PANFROST_PARAM_L2_FEATURES,
DRM_PANFROST_PARAM_CORE_FEATURES,
DRM_PANFROST_PARAM_TILER_FEATURES,
DRM_PANFROST_PARAM_MEM_FEATURES,
DRM_PANFROST_PARAM_MMU_FEATURES,
DRM_PANFROST_PARAM_THREAD_FEATURES,
DRM_PANFROST_PARAM_MAX_THREADS,
DRM_PANFROST_PARAM_THREAD_MAX_WORKGROUP_SZ,
DRM_PANFROST_PARAM_THREAD_MAX_BARRIER_SZ,
DRM_PANFROST_PARAM_COHERENCY_FEATURES,
DRM_PANFROST_PARAM_TEXTURE_FEATURES0,
DRM_PANFROST_PARAM_TEXTURE_FEATURES1,
DRM_PANFROST_PARAM_TEXTURE_FEATURES2,
DRM_PANFROST_PARAM_TEXTURE_FEATURES3,
DRM_PANFROST_PARAM_JS_FEATURES0,
DRM_PANFROST_PARAM_JS_FEATURES1,
DRM_PANFROST_PARAM_JS_FEATURES2,
DRM_PANFROST_PARAM_JS_FEATURES3,
DRM_PANFROST_PARAM_JS_FEATURES4,
DRM_PANFROST_PARAM_JS_FEATURES5,
DRM_PANFROST_PARAM_JS_FEATURES6,
DRM_PANFROST_PARAM_JS_FEATURES7,
DRM_PANFROST_PARAM_JS_FEATURES8,
DRM_PANFROST_PARAM_JS_FEATURES9,
DRM_PANFROST_PARAM_JS_FEATURES10,
DRM_PANFROST_PARAM_JS_FEATURES11,
DRM_PANFROST_PARAM_JS_FEATURES12,
DRM_PANFROST_PARAM_JS_FEATURES13,
DRM_PANFROST_PARAM_JS_FEATURES14,
DRM_PANFROST_PARAM_JS_FEATURES15,
DRM_PANFROST_PARAM_NR_CORE_GROUPS,
DRM_PANFROST_PARAM_THREAD_TLS_ALLOC,
};
struct drm_panfrost_get_param {
......
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