From: Ben Goz <ben....@amd.com>
The queue module enables allocating and initializing queues uniformly.
Signed-off-by: Ben Goz <ben.goz at amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay at amd.com>
---
drivers/gpu/drm/radeon/amdkfd/Makefile | 2 +-
drivers/gpu/drm/radeon/amdkfd/kfd_priv.h | 48 +++++++++++++
drivers/gpu/drm/radeon/amdkfd/kfd_queue.c | 109 ++++++++++++++++++++++++++++++
3 files changed, 158 insertions(+), 1 deletion(-)
create mode 100644 drivers/gpu/drm/radeon/amdkfd/kfd_queue.c
diff --git a/drivers/gpu/drm/radeon/amdkfd/Makefile
b/drivers/gpu/drm/radeon/amdkfd/Makefile
index daf75a8..dbff147 100644
--- a/drivers/gpu/drm/radeon/amdkfd/Makefile
+++ b/drivers/gpu/drm/radeon/amdkfd/Makefile
@@ -6,6 +6,6 @@ ccflags-y := -Iinclude/drm
amdkfd-y := kfd_module.o kfd_device.o kfd_chardev.o kfd_topology.o \
kfd_pasid.o kfd_doorbell.o kfd_vidmem.o kfd_aperture.o \
- kfd_process.o
+ kfd_process.o kfd_queue.o
obj-$(CONFIG_HSA_RADEON) += amdkfd.o
diff --git a/drivers/gpu/drm/radeon/amdkfd/kfd_priv.h
b/drivers/gpu/drm/radeon/amdkfd/kfd_priv.h
index 604c317..94ff1c3 100644
--- a/drivers/gpu/drm/radeon/amdkfd/kfd_priv.h
+++ b/drivers/gpu/drm/radeon/amdkfd/kfd_priv.h
@@ -65,6 +65,9 @@ typedef unsigned int pasid_t;
/* Type that represents a HW doorbell slot. */
typedef u32 doorbell_t;
+/* Type that represents queue pointer */
+typedef u32 qptr_t;
+
struct kfd_device_info {
const struct kfd_scheduler_class *scheduler_class;
unsigned int max_pasid_bits;
@@ -125,12 +128,57 @@ void kfd_vidmem_unkmap(struct kfd_dev *kfd, kfd_mem_obj
mem_obj);
int kfd_vidmem_alloc_map(struct kfd_dev *kfd, kfd_mem_obj *mem_obj, void **ptr,
uint64_t *vmid0_address, size_t size);
void kfd_vidmem_free_unmap(struct kfd_dev *kfd, kfd_mem_obj mem_obj);
+
/* Character device interface */
int kfd_chardev_init(void);
void kfd_chardev_exit(void);
struct device *kfd_chardev(void);
+enum kfd_queue_type {
+ KFD_QUEUE_TYPE_COMPUTE,
+ KFD_QUEUE_TYPE_SDMA,
+ KFD_QUEUE_TYPE_HIQ,
+ KFD_QUEUE_TYPE_DIQ
+};
+
+struct queue_properties {
+ enum kfd_queue_type type;
+ unsigned int queue_id;
+ uint64_t queue_address;
+ uint64_t queue_size;
+ uint32_t priority;
+ uint32_t queue_percent;
+ qptr_t *read_ptr;
+ qptr_t *write_ptr;
+ qptr_t *doorbell_ptr;
+ qptr_t doorbell_off;
+ bool is_interop;
+ bool is_active;
+ /* Not relevant for user mode queues in cp scheduling */
+ unsigned int vmid;
+};
+
+struct queue {
+ struct list_head list;
+ void *mqd;
+ /* kfd_mem_obj contains the mqd */
+ kfd_mem_obj mqd_mem_obj;
+ uint64_t gart_mqd_addr; /* needed for cp scheduling */
+ struct queue_properties properties;
+
+ /*
+ * Used by the queue device manager to track the hqd slot per queue
+ * when using no cp scheduling
+ */
+ uint32_t mec;
+ uint32_t pipe;
+ uint32_t queue;
+
+ struct kfd_process *process;
+ struct kfd_dev *device;
+};
+
/* Data that is per-process-per device. */
struct kfd_process_device {
/*
diff --git a/drivers/gpu/drm/radeon/amdkfd/kfd_queue.c
b/drivers/gpu/drm/radeon/amdkfd/kfd_queue.c
new file mode 100644
index 0000000..646b6d1
--- /dev/null
+++ b/drivers/gpu/drm/radeon/amdkfd/kfd_queue.c
@@ -0,0 +1,109 @@
+/*
+ * Copyright 2014 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#include <linux/slab.h>
+#include "kfd_priv.h"
+
+void print_queue_properties(struct queue_properties *q)
+{
+ if (!q)
+ return;
+
+ pr_debug("Printing queue properties\n"
+ "Queue Type: %u\n"
+ "Queue Size: %llu\n"
+ "Queue percent: %u\n"
+ "Queue Address: 0x%llX\n"
+ "Queue Id: %u\n"
+ "Queue Process Vmid: %u\n"
+ "Queue Read Pointer: 0x%p\n"
+ "Queue Write Pointer: 0x%p\n"
+ "Queue Doorbell Pointer: 0x%p\n"
+ "Queue Doorbell Offset: %u\n", q->type,
+ q->queue_size,
+ q->queue_percent,
+ q->queue_address,
+ q->queue_id,
+ q->vmid,
+ q->read_ptr,
+ q->write_ptr,
+ q->doorbell_ptr,
+ q->doorbell_off);
+}
+
+void print_queue(struct queue *q)
+{
+ if (!q)
+ return;
+ pr_debug("Printing queue\n"
+ "Queue Type: %u\n"
+ "Queue Size: %llu\n"
+ "Queue percent: %u\n"
+ "Queue Address: 0x%llX\n"
+ "Queue Id: %u\n"
+ "Queue Process Vmid: %u\n"
+ "Queue Read Pointer: 0x%p\n"
+ "Queue Write Pointer: 0x%p\n"
+ "Queue Doorbell Pointer: 0x%p\n"
+ "Queue Doorbell Offset: %u\n"
+ "Queue MQD Address: 0x%p\n"
+ "Queue MQD Gart: 0x%llX\n"
+ "Queue Process Address: 0x%p\n"
+ "Queue Device Address: 0x%p\n",
+ q->properties.type,
+ q->properties.queue_size,
+ q->properties.queue_percent,
+ q->properties.queue_address,
+ q->properties.queue_id,
+ q->properties.vmid,
+ q->properties.read_ptr,
+ q->properties.write_ptr,
+ q->properties.doorbell_ptr,
+ q->properties.doorbell_off,
+ q->mqd,
+ q->gart_mqd_addr,
+ q->process,
+ q->device);
+}
+
+int init_queue(struct queue **q, struct queue_properties properties)
+{
+ struct queue *tmp;
+
+ BUG_ON(!q);
+
+ tmp = kzalloc(sizeof(struct queue), GFP_KERNEL);
+ if (!tmp)
+ return -ENOMEM;
+
+ memset(&tmp->properties, 0, sizeof(struct queue_properties));
+ memcpy(&tmp->properties, &properties, sizeof(struct queue_properties));
+
+ *q = tmp;
+ return 0;
+}
+
+void uninit_queue(struct queue *q)
+{
+ kfree(q);
+}
--
1.9.1
