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Message-ID: <20250602140814.2559538-7-karunika.choo@arm.com>
Date: Mon, 2 Jun 2025 15:08:10 +0100
From: Karunika Choo <karunika.choo@....com>
To: dri-devel@...ts.freedesktop.org
Cc: nd@....com,
Boris Brezillon <boris.brezillon@...labora.com>,
Steven Price <steven.price@....com>,
Liviu Dudau <liviu.dudau@....com>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...il.com>,
Simona Vetter <simona@...ll.ch>,
linux-kernel@...r.kernel.org
Subject: [PATCH v3 5/7] drm/panthor: Add support for Mali-G715 family of GPUs
Mali-G715 introduces a new GPU_FEATURES register that provides
information about GPU-wide supported features. The register value will
be passed on to userspace via gpu_info. It also adds the following
registers that are specific to the kernel driver only:
- ASN_HASH_0~2
- DOORBELL_FEATURES
- PRFCNT_FEATURES
- SYSC_ALLOC0~7
- SYSC_PBHA_OVERRIDE0~3
Additionally, Mali-G715 presents an 'Immortalis' naming variant
depending on the shader core count and presence of Ray Intersection
feature support.
This patch adds:
- support for correctly identifying the model names for the Mali-G715
and Mali-G615 GPUs.
- arch 11.8 FW binary support
Signed-off-by: Karunika Choo <karunika.choo@....com>
---
drivers/gpu/drm/panthor/panthor_fw.c | 1 +
drivers/gpu/drm/panthor/panthor_hw.c | 18 ++++++++++++++++++
drivers/gpu/drm/panthor/panthor_regs.h | 11 +++++++++++
include/uapi/drm/panthor_drm.h | 3 +++
4 files changed, 33 insertions(+)
diff --git a/drivers/gpu/drm/panthor/panthor_fw.c b/drivers/gpu/drm/panthor/panthor_fw.c
index b7b454d16f12..fa6e0b48a0b2 100644
--- a/drivers/gpu/drm/panthor/panthor_fw.c
+++ b/drivers/gpu/drm/panthor/panthor_fw.c
@@ -1404,3 +1404,4 @@ int panthor_fw_init(struct panthor_device *ptdev)
MODULE_FIRMWARE("arm/mali/arch10.8/mali_csffw.bin");
MODULE_FIRMWARE("arm/mali/arch10.10/mali_csffw.bin");
MODULE_FIRMWARE("arm/mali/arch10.12/mali_csffw.bin");
+MODULE_FIRMWARE("arm/mali/arch11.8/mali_csffw.bin");
diff --git a/drivers/gpu/drm/panthor/panthor_hw.c b/drivers/gpu/drm/panthor/panthor_hw.c
index 5e423122cd4e..f5127a4b02dc 100644
--- a/drivers/gpu/drm/panthor/panthor_hw.c
+++ b/drivers/gpu/drm/panthor/panthor_hw.c
@@ -29,6 +29,9 @@ static void panthor_gpu_info_init(struct panthor_device *ptdev)
ptdev->gpu_info.shader_present = gpu_read64(ptdev, GPU_SHADER_PRESENT);
ptdev->gpu_info.tiler_present = gpu_read64(ptdev, GPU_TILER_PRESENT);
ptdev->gpu_info.l2_present = gpu_read64(ptdev, GPU_L2_PRESENT);
+
+ /* Introduced in arch 11.x */
+ ptdev->gpu_info.gpu_features = gpu_read64(ptdev, GPU_FEATURES);
}
static char *get_gpu_model_name(struct panthor_device *ptdev)
@@ -36,6 +39,9 @@ static char *get_gpu_model_name(struct panthor_device *ptdev)
const u32 gpu_id = ptdev->gpu_info.gpu_id;
const u32 product_id = GPU_PROD_ID_MAKE(GPU_ARCH_MAJOR(gpu_id),
GPU_PROD_MAJOR(gpu_id));
+ const bool ray_intersection = !!(ptdev->gpu_info.gpu_features &
+ GPU_FEATURES_RAY_INTERSECTION);
+ const u8 shader_core_count = hweight64(ptdev->gpu_info.shader_present);
switch (product_id) {
case GPU_PROD_ID_MAKE(10, 2):
@@ -46,6 +52,15 @@ static char *get_gpu_model_name(struct panthor_device *ptdev)
return "Mali-G510";
case GPU_PROD_ID_MAKE(10, 4):
return "Mali-G310";
+ case GPU_PROD_ID_MAKE(11, 2):
+ if (shader_core_count > 10 && ray_intersection)
+ return "Mali-G715-Immortalis";
+ else if (shader_core_count >= 7)
+ return "Mali-G715";
+
+ fallthrough;
+ case GPU_PROD_ID_MAKE(11, 3):
+ return "Mali-G615";
}
return "(Unknown Mali GPU)";
@@ -85,6 +100,9 @@ static struct panthor_hw panthor_hw_devices[] = {
{
.arch_major = 10,
},
+ {
+ .arch_major = 11,
+ },
};
static int init_gpu_id(struct panthor_device *ptdev)
diff --git a/drivers/gpu/drm/panthor/panthor_regs.h b/drivers/gpu/drm/panthor/panthor_regs.h
index e7a81686afdb..4eaa2b612756 100644
--- a/drivers/gpu/drm/panthor/panthor_regs.h
+++ b/drivers/gpu/drm/panthor/panthor_regs.h
@@ -72,6 +72,10 @@
#define GPU_PWR_OVERRIDE0 0x54
#define GPU_PWR_OVERRIDE1 0x58
+#define GPU_FEATURES 0x60
+#define GPU_FEATURES_RAY_INTERSECTION BIT(2)
+#define GPU_PRFCNT_FEATURES 0x68
+
#define GPU_TIMESTAMP_OFFSET 0x88
#define GPU_CYCLE_COUNT 0x90
#define GPU_TIMESTAMP 0x98
@@ -83,6 +87,8 @@
#define GPU_TEXTURE_FEATURES(n) (0xB0 + ((n) * 4))
+#define GPU_DOORBELL_FEATURES 0xC0
+
#define GPU_SHADER_PRESENT 0x100
#define GPU_TILER_PRESENT 0x110
#define GPU_L2_PRESENT 0x120
@@ -109,6 +115,8 @@
#define GPU_REVID 0x280
+#define GPU_ASN_HASH(n) (0x2C0 + ((n) * 4))
+
#define GPU_COHERENCY_FEATURES 0x300
#define GPU_COHERENCY_PROT_BIT(name) BIT(GPU_COHERENCY_ ## name)
@@ -117,6 +125,9 @@
#define GPU_COHERENCY_ACE 1
#define GPU_COHERENCY_NONE 31
+#define GPU_SYSC_PBHA_OVERRIDE(n) (0x320 + ((n) * 4))
+#define GPU_SYSC_ALLOC(n) (0x340 + ((n) * 4))
+
#define MCU_CONTROL 0x700
#define MCU_CONTROL_ENABLE 1
#define MCU_CONTROL_AUTO 2
diff --git a/include/uapi/drm/panthor_drm.h b/include/uapi/drm/panthor_drm.h
index ad9a70afea6c..888179effdee 100644
--- a/include/uapi/drm/panthor_drm.h
+++ b/include/uapi/drm/panthor_drm.h
@@ -310,6 +310,9 @@ struct drm_panthor_gpu_info {
/** @pad: MBZ. */
__u32 pad;
+
+ /** @gpu_features: Bitmask describing supported GPU-wide features */
+ __u64 gpu_features;
};
/**
--
2.49.0
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