@@ -8,6 +8,6 @@ amdkfd-y := kfd_module.o kfd_device.o kfd_chardev.o kfd_topology.o \
kfd_pasid.o kfd_doorbell.o kfd_flat_memory.o \
kfd_process.o kfd_queue.o kfd_mqd_manager.o \
kfd_kernel_queue.o kfd_packet_manager.o \
- kfd_process_queue_manager.o
+ kfd_process_queue_manager.o kfd_device_queue_manager.o
obj-$(CONFIG_HSA_AMD) += amdkfd.o
@@ -25,6 +25,7 @@
#include <linux/pci.h>
#include <linux/slab.h>
#include "kfd_priv.h"
+#include "kfd_device_queue_manager.h"
#define MQD_SIZE_ALIGNED 768
@@ -199,12 +200,34 @@ bool kgd2kfd_device_init(struct kfd_dev *kfd,
amd_iommu_set_invalidate_ctx_cb(kfd->pdev,
iommu_pasid_shutdown_callback);
+ kfd->dqm = device_queue_manager_init(kfd);
+ if (!kfd->dqm) {
+ dev_err(kfd_device,
+ "Error initializing queue manager for device (%x:%x)\n",
+ kfd->pdev->vendor, kfd->pdev->device);
+ goto device_queue_manager_error;
+ }
+
+ if (kfd->dqm->start(kfd->dqm) != 0) {
+ dev_err(kfd_device,
+ "Error starting queuen manager for device (%x:%x)\n",
+ kfd->pdev->vendor, kfd->pdev->device);
+ goto dqm_start_error;
+ }
+
kfd->init_complete = true;
dev_info(kfd_device, "added device (%x:%x)\n", kfd->pdev->vendor,
kfd->pdev->device);
+ pr_debug("kfd: Starting kfd with the following scheduling policy %d\n",
+ sched_policy);
+
goto out;
+dqm_start_error:
+ device_queue_manager_uninit(kfd->dqm);
+device_queue_manager_error:
+ amd_iommu_free_device(kfd->pdev);
device_iommu_pasid_error:
kfd_topology_remove_device(kfd);
kfd_topology_add_device_error:
@@ -219,6 +242,7 @@ out:
void kgd2kfd_device_exit(struct kfd_dev *kfd)
{
if (kfd->init_complete) {
+ device_queue_manager_uninit(kfd->dqm);
amd_iommu_free_device(kfd->pdev);
kfd_topology_remove_device(kfd);
}
@@ -230,8 +254,10 @@ void kgd2kfd_suspend(struct kfd_dev *kfd)
{
BUG_ON(kfd == NULL);
- if (kfd->init_complete)
+ if (kfd->init_complete) {
+ kfd->dqm->stop(kfd->dqm);
amd_iommu_free_device(kfd->pdev);
+ }
}
int kgd2kfd_resume(struct kfd_dev *kfd)
@@ -249,6 +275,7 @@ int kgd2kfd_resume(struct kfd_dev *kfd)
return -ENXIO;
amd_iommu_set_invalidate_ctx_cb(kfd->pdev,
iommu_pasid_shutdown_callback);
+ kfd->dqm->start(kfd->dqm);
}
return 0;
new file mode 100644
@@ -0,0 +1,1059 @@
+/*
+ * 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 <linux/list.h>
+#include <linux/types.h>
+#include <linux/printk.h>
+#include <linux/bitops.h>
+#include "kfd_priv.h"
+#include "kfd_device_queue_manager.h"
+#include "kfd_mqd_manager.h"
+#include "cik_regs.h"
+#include "kfd_kernel_queue.h"
+#include "../../radeon/cik_reg.h"
+
+/* Size of the per-pipe EOP queue */
+#define CIK_HPD_EOP_BYTES_LOG2 11
+#define CIK_HPD_EOP_BYTES (1U << CIK_HPD_EOP_BYTES_LOG2)
+
+static bool is_mem_initialized;
+
+static int init_memory(struct device_queue_manager *dqm);
+static int set_pasid_vmid_mapping(struct device_queue_manager *dqm,
+ unsigned int pasid, unsigned int vmid);
+
+static int create_compute_queue_nocpsch(struct device_queue_manager *dqm,
+ struct queue *q,
+ struct qcm_process_device *qpd);
+static int execute_queues_cpsch(struct device_queue_manager *dqm, bool lock);
+static int destroy_queues_cpsch(struct device_queue_manager *dqm, bool lock);
+
+
+static inline unsigned int get_pipes_num(struct device_queue_manager *dqm)
+{
+ BUG_ON(!dqm || !dqm->dev);
+ return dqm->dev->shared_resources.compute_pipe_count;
+}
+
+static inline unsigned int get_first_pipe(struct device_queue_manager *dqm)
+{
+ BUG_ON(!dqm);
+ return dqm->dev->shared_resources.first_compute_pipe;
+}
+
+static inline unsigned int get_pipes_num_cpsch(void)
+{
+ return PIPE_PER_ME_CP_SCHEDULING;
+}
+
+static unsigned int get_sh_mem_bases_nybble_64(struct kfd_process *process,
+ struct kfd_dev *dev)
+{
+ struct kfd_process_device *pdd;
+ uint32_t nybble;
+
+ pdd = kfd_get_process_device_data(dev, process, 1);
+ nybble = (pdd->lds_base >> 60) & 0x0E;
+
+ return nybble;
+
+}
+
+static unsigned int get_sh_mem_bases_32(struct kfd_process *process,
+ struct kfd_dev *dev)
+{
+ struct kfd_process_device *pdd;
+ unsigned int shared_base;
+
+ pdd = kfd_get_process_device_data(dev, process, 1);
+ shared_base = (pdd->lds_base >> 16) & 0xFF;
+
+ return shared_base;
+}
+
+static uint32_t compute_sh_mem_bases_64bit(unsigned int top_address_nybble);
+static void init_process_memory(struct device_queue_manager *dqm,
+ struct qcm_process_device *qpd)
+{
+ unsigned int temp;
+
+ BUG_ON(!dqm || !qpd);
+
+ /* check if sh_mem_config register already configured */
+ if (qpd->sh_mem_config == 0) {
+ qpd->sh_mem_config =
+ ALIGNMENT_MODE(SH_MEM_ALIGNMENT_MODE_UNALIGNED) |
+ DEFAULT_MTYPE(MTYPE_NONCACHED) |
+ APE1_MTYPE(MTYPE_NONCACHED);
+ qpd->sh_mem_ape1_limit = 0;
+ qpd->sh_mem_ape1_base = 0;
+ }
+
+ if (qpd->pqm->process->is_32bit_user_mode) {
+ temp = get_sh_mem_bases_32(qpd->pqm->process, dqm->dev);
+ qpd->sh_mem_bases = SHARED_BASE(temp);
+ qpd->sh_mem_config |= PTR32;
+ } else {
+ temp = get_sh_mem_bases_nybble_64(qpd->pqm->process, dqm->dev);
+ qpd->sh_mem_bases = compute_sh_mem_bases_64bit(temp);
+ }
+
+ pr_debug("kfd: is32bit process: %d sh_mem_bases nybble: 0x%X and register 0x%X\n",
+ qpd->pqm->process->is_32bit_user_mode, temp, qpd->sh_mem_bases);
+}
+
+static void program_sh_mem_settings(struct device_queue_manager *dqm,
+ struct qcm_process_device *qpd)
+{
+ return kfd2kgd->program_sh_mem_settings(dqm->dev->kgd, qpd->vmid,
+ qpd->sh_mem_config,
+ qpd->sh_mem_ape1_base,
+ qpd->sh_mem_ape1_limit,
+ qpd->sh_mem_bases);
+}
+
+static int allocate_vmid(struct device_queue_manager *dqm,
+ struct qcm_process_device *qpd,
+ struct queue *q)
+{
+ int bit, allocated_vmid;
+
+ if (dqm->vmid_bitmap == 0)
+ return -ENOMEM;
+
+ bit = find_first_bit((unsigned long *)&dqm->vmid_bitmap, CIK_VMID_NUM);
+ clear_bit(bit, (unsigned long *)&dqm->vmid_bitmap);
+
+ /* Kaveri kfd vmid's starts from vmid 8 */
+ allocated_vmid = bit + KFD_VMID_START_OFFSET;
+ pr_debug("kfd: vmid allocation %d\n", allocated_vmid);
+ qpd->vmid = allocated_vmid;
+ q->properties.vmid = allocated_vmid;
+
+ set_pasid_vmid_mapping(dqm, q->process->pasid, q->properties.vmid);
+ program_sh_mem_settings(dqm, qpd);
+
+ return 0;
+}
+
+static void deallocate_vmid(struct device_queue_manager *dqm,
+ struct qcm_process_device *qpd,
+ struct queue *q)
+{
+ int bit = qpd->vmid - KFD_VMID_START_OFFSET;
+
+ set_bit(bit, (unsigned long *)&dqm->vmid_bitmap);
+ qpd->vmid = 0;
+ q->properties.vmid = 0;
+}
+
+static int create_queue_nocpsch(struct device_queue_manager *dqm,
+ struct queue *q,
+ struct qcm_process_device *qpd,
+ int *allocated_vmid)
+{
+ int retval;
+
+ BUG_ON(!dqm || !q || !qpd || !allocated_vmid);
+
+ pr_debug("kfd: In func %s\n", __func__);
+ print_queue(q);
+
+ mutex_lock(&dqm->lock);
+
+ if (list_empty(&qpd->queues_list)) {
+ retval = allocate_vmid(dqm, qpd, q);
+ if (retval != 0) {
+ mutex_unlock(&dqm->lock);
+ return retval;
+ }
+ }
+ *allocated_vmid = qpd->vmid;
+ q->properties.vmid = qpd->vmid;
+
+ retval = create_compute_queue_nocpsch(dqm, q, qpd);
+
+ if (retval != 0) {
+ if (list_empty(&qpd->queues_list)) {
+ deallocate_vmid(dqm, qpd, q);
+ *allocated_vmid = 0;
+ }
+ mutex_unlock(&dqm->lock);
+ return retval;
+ }
+
+ list_add(&q->list, &qpd->queues_list);
+ dqm->queue_count++;
+
+ mutex_unlock(&dqm->lock);
+ return 0;
+}
+
+static int allocate_hqd(struct device_queue_manager *dqm, struct queue *q)
+{
+ bool set;
+ int pipe, bit;
+
+ set = false;
+
+ for (pipe = dqm->next_pipe_to_allocate; pipe < get_pipes_num(dqm);
+ pipe = (pipe + 1) % get_pipes_num(dqm)) {
+ if (dqm->allocated_queues[pipe] != 0) {
+ bit = find_first_bit(
+ (unsigned long *)&dqm->allocated_queues[pipe],
+ QUEUES_PER_PIPE);
+
+ clear_bit(bit,
+ (unsigned long *)&dqm->allocated_queues[pipe]);
+ q->pipe = pipe;
+ q->queue = bit;
+ set = true;
+ break;
+ }
+ }
+
+ if (set == false)
+ return -EBUSY;
+
+ pr_debug("kfd: DQM %s hqd slot - pipe (%d) queue(%d)\n",
+ __func__, q->pipe, q->queue);
+ /* horizontal hqd allocation */
+ dqm->next_pipe_to_allocate = (pipe + 1) % get_pipes_num(dqm);
+
+ return 0;
+}
+
+static inline void deallocate_hqd(struct device_queue_manager *dqm,
+ struct queue *q)
+{
+ set_bit(q->queue, (unsigned long *)&dqm->allocated_queues[q->pipe]);
+}
+
+static int create_compute_queue_nocpsch(struct device_queue_manager *dqm,
+ struct queue *q,
+ struct qcm_process_device *qpd)
+{
+ int retval;
+ struct mqd_manager *mqd;
+
+ BUG_ON(!dqm || !q || !qpd);
+
+ mqd = dqm->get_mqd_manager(dqm, KFD_MQD_TYPE_CIK_COMPUTE);
+ if (mqd == NULL)
+ return -ENOMEM;
+
+ retval = allocate_hqd(dqm, q);
+ if (retval != 0)
+ return retval;
+
+ retval = mqd->init_mqd(mqd, &q->mqd, &q->mqd_mem_obj,
+ &q->gart_mqd_addr, &q->properties);
+ if (retval != 0) {
+ deallocate_hqd(dqm, q);
+ return retval;
+ }
+
+ return 0;
+}
+
+static int destroy_queue_nocpsch(struct device_queue_manager *dqm,
+ struct qcm_process_device *qpd,
+ struct queue *q)
+{
+ int retval;
+ struct mqd_manager *mqd;
+
+ BUG_ON(!dqm || !q || !q->mqd || !qpd);
+
+ retval = 0;
+
+ pr_debug("kfd: In Func %s\n", __func__);
+
+ mutex_lock(&dqm->lock);
+ mqd = dqm->get_mqd_manager(dqm, KFD_MQD_TYPE_CIK_COMPUTE);
+ if (mqd == NULL) {
+ retval = -ENOMEM;
+ goto out;
+ }
+
+ retval = mqd->destroy_mqd(mqd, q->mqd,
+ KFD_PREEMPT_TYPE_WAVEFRONT,
+ QUEUE_PREEMPT_DEFAULT_TIMEOUT_MS,
+ q->pipe, q->queue);
+
+ if (retval != 0)
+ goto out;
+
+ deallocate_hqd(dqm, q);
+
+ mqd->uninit_mqd(mqd, q->mqd, q->mqd_mem_obj);
+
+ list_del(&q->list);
+ if (list_empty(&qpd->queues_list))
+ deallocate_vmid(dqm, qpd, q);
+ dqm->queue_count--;
+out:
+ mutex_unlock(&dqm->lock);
+ return retval;
+}
+
+static int update_queue(struct device_queue_manager *dqm, struct queue *q)
+{
+ int retval;
+ struct mqd_manager *mqd;
+
+ BUG_ON(!dqm || !q || !q->mqd);
+
+ mutex_lock(&dqm->lock);
+ mqd = dqm->get_mqd_manager(dqm, KFD_MQD_TYPE_CIK_COMPUTE);
+ if (mqd == NULL) {
+ mutex_unlock(&dqm->lock);
+ return -ENOMEM;
+ }
+
+ retval = mqd->update_mqd(mqd, q->mqd, &q->properties);
+ if (q->properties.is_active == true)
+ dqm->queue_count++;
+ else
+ dqm->queue_count--;
+
+ if (sched_policy != KFD_SCHED_POLICY_NO_HWS)
+ retval = execute_queues_cpsch(dqm, false);
+
+ mutex_unlock(&dqm->lock);
+ return retval;
+}
+
+static struct mqd_manager *get_mqd_manager_nocpsch(
+ struct device_queue_manager *dqm, enum KFD_MQD_TYPE type)
+{
+ struct mqd_manager *mqd;
+
+ BUG_ON(!dqm || type >= KFD_MQD_TYPE_MAX);
+
+ pr_debug("kfd: In func %s mqd type %d\n", __func__, type);
+
+ mqd = dqm->mqds[type];
+ if (!mqd) {
+ mqd = mqd_manager_init(type, dqm->dev);
+ if (mqd == NULL)
+ pr_err("kfd: mqd manager is NULL");
+ dqm->mqds[type] = mqd;
+ }
+
+ return mqd;
+}
+
+static int register_process_nocpsch(struct device_queue_manager *dqm,
+ struct qcm_process_device *qpd)
+{
+ struct device_process_node *n;
+
+ BUG_ON(!dqm || !qpd);
+
+ pr_debug("kfd: In func %s\n", __func__);
+
+ n = kzalloc(sizeof(struct device_process_node), GFP_KERNEL);
+ if (!n)
+ return -ENOMEM;
+
+ n->qpd = qpd;
+
+ mutex_lock(&dqm->lock);
+ list_add(&n->list, &dqm->queues);
+
+ init_process_memory(dqm, qpd);
+ dqm->processes_count++;
+
+ mutex_unlock(&dqm->lock);
+
+ return 0;
+}
+
+static int unregister_process_nocpsch(struct device_queue_manager *dqm,
+ struct qcm_process_device *qpd)
+{
+ int retval;
+ struct device_process_node *cur, *next;
+
+ BUG_ON(!dqm || !qpd);
+
+ BUG_ON(!list_empty(&qpd->queues_list));
+
+ pr_debug("kfd: In func %s\n", __func__);
+
+ retval = 0;
+ mutex_lock(&dqm->lock);
+
+ list_for_each_entry_safe(cur, next, &dqm->queues, list) {
+ if (qpd == cur->qpd) {
+ list_del(&cur->list);
+ dqm->processes_count--;
+ goto out;
+ }
+ }
+ /* qpd not found in dqm list */
+ retval = 1;
+out:
+ mutex_unlock(&dqm->lock);
+ return retval;
+}
+
+static int
+set_pasid_vmid_mapping(struct device_queue_manager *dqm, unsigned int pasid,
+ unsigned int vmid)
+{
+ uint32_t pasid_mapping;
+
+ pasid_mapping = (pasid == 0) ? 0 : (uint32_t)pasid |
+ ATC_VMID_PASID_MAPPING_VALID;
+ return kfd2kgd->set_pasid_vmid_mapping(dqm->dev->kgd, pasid_mapping,
+ vmid);
+}
+
+static uint32_t compute_sh_mem_bases_64bit(unsigned int top_address_nybble)
+{
+ /* In 64-bit mode, we can only control the top 3 bits of the LDS,
+ * scratch and GPUVM apertures.
+ * The hardware fills in the remaining 59 bits according to the
+ * following pattern:
+ * LDS: X0000000'00000000 - X0000001'00000000 (4GB)
+ * Scratch: X0000001'00000000 - X0000002'00000000 (4GB)
+ * GPUVM: Y0010000'00000000 - Y0020000'00000000 (1TB)
+ *
+ * (where X/Y is the configurable nybble with the low-bit 0)
+ *
+ * LDS and scratch will have the same top nybble programmed in the
+ * top 3 bits of SH_MEM_BASES.PRIVATE_BASE.
+ * GPUVM can have a different top nybble programmed in the
+ * top 3 bits of SH_MEM_BASES.SHARED_BASE.
+ * We don't bother to support different top nybbles
+ * for LDS/Scratch and GPUVM.
+ */
+
+ BUG_ON((top_address_nybble & 1) || top_address_nybble > 0xE ||
+ top_address_nybble == 0);
+
+ return PRIVATE_BASE(top_address_nybble << 12) |
+ SHARED_BASE(top_address_nybble << 12);
+}
+
+static int init_memory(struct device_queue_manager *dqm)
+{
+ int i, retval;
+
+ for (i = 8; i < 16; i++)
+ set_pasid_vmid_mapping(dqm, 0, i);
+
+ retval = kfd2kgd->init_memory(dqm->dev->kgd);
+ if (retval == 0)
+ is_mem_initialized = true;
+ return retval;
+}
+
+
+static int init_pipelines(struct device_queue_manager *dqm,
+ unsigned int pipes_num, unsigned int first_pipe)
+{
+ void *hpdptr;
+ struct mqd_manager *mqd;
+ unsigned int i, err, inx;
+ uint64_t pipe_hpd_addr;
+
+ BUG_ON(!dqm || !dqm->dev);
+
+ pr_debug("kfd: In func %s\n", __func__);
+
+ /*
+ * Allocate memory for the HPDs. This is hardware-owned per-pipe data.
+ * The driver never accesses this memory after zeroing it.
+ * It doesn't even have to be saved/restored on suspend/resume
+ * because it contains no data when there are no active queues.
+ */
+
+ err = kfd2kgd->allocate_mem(dqm->dev->kgd,
+ CIK_HPD_EOP_BYTES * pipes_num,
+ PAGE_SIZE,
+ KFD_MEMPOOL_SYSTEM_WRITECOMBINE,
+ (struct kgd_mem **) &dqm->pipeline_mem);
+
+ if (err) {
+ pr_err("kfd: error allocate vidmem num pipes: %d\n",
+ pipes_num);
+ return -ENOMEM;
+ }
+
+ hpdptr = dqm->pipeline_mem->cpu_ptr;
+ dqm->pipelines_addr = dqm->pipeline_mem->gpu_addr;
+
+ memset(hpdptr, 0, CIK_HPD_EOP_BYTES * pipes_num);
+
+ mqd = dqm->get_mqd_manager(dqm, KFD_MQD_TYPE_CIK_COMPUTE);
+ if (mqd == NULL) {
+ kfd2kgd->free_mem(dqm->dev->kgd,
+ (struct kgd_mem *) dqm->pipeline_mem);
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < pipes_num; i++) {
+ inx = i + first_pipe;
+ pipe_hpd_addr = dqm->pipelines_addr + i * CIK_HPD_EOP_BYTES;
+ pr_debug("kfd: pipeline address %llX\n", pipe_hpd_addr);
+ /* = log2(bytes/4)-1 */
+ kfd2kgd->init_pipeline(dqm->dev->kgd, i,
+ CIK_HPD_EOP_BYTES_LOG2 - 3, pipe_hpd_addr);
+ }
+
+ return 0;
+}
+
+
+static int init_scheduler(struct device_queue_manager *dqm)
+{
+ int retval;
+
+ BUG_ON(!dqm);
+
+ pr_debug("kfd: In %s\n", __func__);
+
+ retval = init_pipelines(dqm, get_pipes_num(dqm), KFD_DQM_FIRST_PIPE);
+ if (retval != 0)
+ return retval;
+
+ retval = init_memory(dqm);
+
+ return retval;
+}
+
+static int initialize_nocpsch(struct device_queue_manager *dqm)
+{
+ int i;
+
+ BUG_ON(!dqm);
+
+ pr_debug("kfd: In func %s num of pipes: %d\n",
+ __func__, get_pipes_num(dqm));
+
+ mutex_init(&dqm->lock);
+ INIT_LIST_HEAD(&dqm->queues);
+ dqm->queue_count = dqm->next_pipe_to_allocate = 0;
+ dqm->allocated_queues = kcalloc(get_pipes_num(dqm),
+ sizeof(unsigned int), GFP_KERNEL);
+ if (!dqm->allocated_queues) {
+ mutex_destroy(&dqm->lock);
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < get_pipes_num(dqm); i++)
+ dqm->allocated_queues[i] = (1 << QUEUES_PER_PIPE) - 1;
+
+ dqm->vmid_bitmap = (1 << VMID_PER_DEVICE) - 1;
+
+ init_scheduler(dqm);
+ return 0;
+}
+
+static void uninitialize_nocpsch(struct device_queue_manager *dqm)
+{
+ BUG_ON(!dqm);
+
+ BUG_ON(dqm->queue_count > 0 || dqm->processes_count > 0);
+
+ kfree(dqm->allocated_queues);
+ mutex_destroy(&dqm->lock);
+ kfd2kgd->free_mem(dqm->dev->kgd,
+ (struct kgd_mem *) dqm->pipeline_mem);
+}
+
+static int start_nocpsch(struct device_queue_manager *dqm)
+{
+ return 0;
+}
+
+static int stop_nocpsch(struct device_queue_manager *dqm)
+{
+ return 0;
+}
+
+/*
+ * Device Queue Manager implementation for cp scheduler
+ */
+
+static int set_sched_resources(struct device_queue_manager *dqm)
+{
+ struct scheduling_resources res;
+ unsigned int queue_num, queue_mask;
+
+ BUG_ON(!dqm);
+
+ pr_debug("kfd: In func %s\n", __func__);
+
+ queue_num = get_pipes_num_cpsch() * QUEUES_PER_PIPE;
+ queue_mask = (1 << queue_num) - 1;
+ res.vmid_mask = (1 << VMID_PER_DEVICE) - 1;
+ res.vmid_mask <<= KFD_VMID_START_OFFSET;
+ res.queue_mask = queue_mask << (get_first_pipe(dqm) * QUEUES_PER_PIPE);
+ res.gws_mask = res.oac_mask = res.gds_heap_base =
+ res.gds_heap_size = 0;
+
+ pr_debug("kfd: scheduling resources:\n"
+ " vmid mask: 0x%8X\n"
+ " queue mask: 0x%8llX\n",
+ res.vmid_mask, res.queue_mask);
+
+ return pm_send_set_resources(&dqm->packets, &res);
+}
+
+static int initialize_cpsch(struct device_queue_manager *dqm)
+{
+ int retval;
+
+ BUG_ON(!dqm);
+
+ pr_debug("kfd: In func %s num of pipes: %d\n",
+ __func__, get_pipes_num_cpsch());
+
+ mutex_init(&dqm->lock);
+ INIT_LIST_HEAD(&dqm->queues);
+ dqm->queue_count = dqm->processes_count = 0;
+ dqm->active_runlist = false;
+ retval = init_pipelines(dqm, get_pipes_num(dqm), 0);
+ if (retval != 0)
+ goto fail_init_pipelines;
+
+ return 0;
+
+fail_init_pipelines:
+ mutex_destroy(&dqm->lock);
+ return retval;
+}
+
+static int start_cpsch(struct device_queue_manager *dqm)
+{
+ struct device_process_node *node;
+ int retval;
+
+ BUG_ON(!dqm);
+
+ retval = 0;
+
+ retval = pm_init(&dqm->packets, dqm);
+ if (retval != 0)
+ goto fail_packet_manager_init;
+
+ retval = set_sched_resources(dqm);
+ if (retval != 0)
+ goto fail_set_sched_resources;
+
+ pr_debug("kfd: allocating fence memory\n");
+
+ /* allocate fence memory on the gart */
+ retval = kfd2kgd->allocate_mem(dqm->dev->kgd,
+ sizeof(*dqm->fence_addr),
+ 32,
+ KFD_MEMPOOL_SYSTEM_WRITECOMBINE,
+ (struct kgd_mem **) &dqm->fence_mem);
+
+ if (retval != 0)
+ goto fail_allocate_vidmem;
+
+ dqm->fence_addr = dqm->fence_mem->cpu_ptr;
+ dqm->fence_gpu_addr = dqm->fence_mem->gpu_addr;
+
+ list_for_each_entry(node, &dqm->queues, list)
+ if (node->qpd->pqm->process && dqm->dev)
+ kfd_bind_process_to_device(dqm->dev,
+ node->qpd->pqm->process);
+
+ execute_queues_cpsch(dqm, true);
+
+ return 0;
+fail_allocate_vidmem:
+fail_set_sched_resources:
+ pm_uninit(&dqm->packets);
+fail_packet_manager_init:
+ return retval;
+}
+
+static int stop_cpsch(struct device_queue_manager *dqm)
+{
+ struct device_process_node *node;
+ struct kfd_process_device *pdd;
+
+ BUG_ON(!dqm);
+
+ destroy_queues_cpsch(dqm, true);
+
+ list_for_each_entry(node, &dqm->queues, list) {
+ pdd = kfd_get_process_device_data(dqm->dev,
+ node->qpd->pqm->process, 1);
+ pdd->bound = false;
+ }
+ kfd2kgd->free_mem(dqm->dev->kgd,
+ (struct kgd_mem *) dqm->fence_mem);
+ pm_uninit(&dqm->packets);
+
+ return 0;
+}
+
+static int create_kernel_queue_cpsch(struct device_queue_manager *dqm,
+ struct kernel_queue *kq,
+ struct qcm_process_device *qpd)
+{
+ BUG_ON(!dqm || !kq || !qpd);
+
+ pr_debug("kfd: In func %s\n", __func__);
+
+ mutex_lock(&dqm->lock);
+ list_add(&kq->list, &qpd->priv_queue_list);
+ dqm->queue_count++;
+ qpd->is_debug = true;
+ execute_queues_cpsch(dqm, false);
+ mutex_unlock(&dqm->lock);
+
+ return 0;
+}
+
+static void destroy_kernel_queue_cpsch(struct device_queue_manager *dqm,
+ struct kernel_queue *kq,
+ struct qcm_process_device *qpd)
+{
+ BUG_ON(!dqm || !kq);
+
+ pr_debug("kfd: In %s\n", __func__);
+
+ mutex_lock(&dqm->lock);
+ destroy_queues_cpsch(dqm, false);
+ list_del(&kq->list);
+ dqm->queue_count--;
+ qpd->is_debug = false;
+ execute_queues_cpsch(dqm, false);
+ mutex_unlock(&dqm->lock);
+}
+
+static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
+ struct qcm_process_device *qpd, int *allocate_vmid)
+{
+ int retval;
+ struct mqd_manager *mqd;
+
+ BUG_ON(!dqm || !q || !qpd);
+
+ retval = 0;
+
+ if (allocate_vmid)
+ *allocate_vmid = 0;
+
+ mutex_lock(&dqm->lock);
+
+ mqd = dqm->get_mqd_manager(dqm, KFD_MQD_TYPE_CIK_CP);
+ if (mqd == NULL) {
+ mutex_unlock(&dqm->lock);
+ return -ENOMEM;
+ }
+
+ retval = mqd->init_mqd(mqd, &q->mqd, &q->mqd_mem_obj,
+ &q->gart_mqd_addr, &q->properties);
+ if (retval != 0)
+ goto out;
+
+ list_add(&q->list, &qpd->queues_list);
+ if (q->properties.is_active) {
+ dqm->queue_count++;
+ retval = execute_queues_cpsch(dqm, false);
+ }
+
+out:
+ mutex_unlock(&dqm->lock);
+ return retval;
+}
+
+int fence_wait_timeout(unsigned int *fence_addr, unsigned int fence_value,
+ unsigned long timeout)
+{
+ BUG_ON(!fence_addr);
+ timeout += jiffies;
+
+ while (*fence_addr != fence_value) {
+ if (time_after(jiffies, timeout)) {
+ pr_err("kfd: qcm fence wait loop timeout expired\n");
+ return -ETIME;
+ }
+ cpu_relax();
+ }
+
+ return 0;
+}
+
+static int destroy_queues_cpsch(struct device_queue_manager *dqm, bool lock)
+{
+ int retval;
+
+ BUG_ON(!dqm);
+
+ retval = 0;
+
+ if (lock)
+ mutex_lock(&dqm->lock);
+ if (dqm->active_runlist == false)
+ goto out;
+ retval = pm_send_unmap_queue(&dqm->packets, KFD_QUEUE_TYPE_COMPUTE,
+ KFD_PREEMPT_TYPE_FILTER_ALL_QUEUES, 0, false, 0);
+ if (retval != 0)
+ goto out;
+
+ *dqm->fence_addr = KFD_FENCE_INIT;
+ pm_send_query_status(&dqm->packets, dqm->fence_gpu_addr,
+ KFD_FENCE_COMPLETED);
+ /* should be timed out */
+ fence_wait_timeout(dqm->fence_addr, KFD_FENCE_COMPLETED,
+ QUEUE_PREEMPT_DEFAULT_TIMEOUT_MS);
+ pm_release_ib(&dqm->packets);
+ dqm->active_runlist = false;
+
+out:
+ if (lock)
+ mutex_unlock(&dqm->lock);
+ return retval;
+}
+
+static int execute_queues_cpsch(struct device_queue_manager *dqm, bool lock)
+{
+ int retval;
+
+ BUG_ON(!dqm);
+
+ if (lock)
+ mutex_lock(&dqm->lock);
+
+ retval = destroy_queues_cpsch(dqm, false);
+ if (retval != 0) {
+ pr_err("kfd: the cp might be in an unrecoverable state due to an unsuccessful queues preemption");
+ goto out;
+ }
+
+ if (dqm->queue_count <= 0 || dqm->processes_count <= 0) {
+ retval = 0;
+ goto out;
+ }
+
+ if (dqm->active_runlist) {
+ retval = 0;
+ goto out;
+ }
+
+ retval = pm_send_runlist(&dqm->packets, &dqm->queues);
+ if (retval != 0) {
+ pr_err("kfd: failed to execute runlist");
+ goto out;
+ }
+ dqm->active_runlist = true;
+
+out:
+ if (lock)
+ mutex_unlock(&dqm->lock);
+ return retval;
+}
+
+static int destroy_queue_cpsch(struct device_queue_manager *dqm,
+ struct qcm_process_device *qpd,
+ struct queue *q)
+{
+ int retval;
+ struct mqd_manager *mqd;
+
+ BUG_ON(!dqm || !qpd || !q);
+
+ retval = 0;
+
+ /* remove queue from list to prevent rescheduling after preemption */
+ mutex_lock(&dqm->lock);
+
+ mqd = dqm->get_mqd_manager(dqm, KFD_MQD_TYPE_CIK_CP);
+ if (!mqd) {
+ retval = -ENOMEM;
+ goto failed;
+ }
+
+ list_del(&q->list);
+ dqm->queue_count--;
+
+ execute_queues_cpsch(dqm, false);
+
+ mqd->uninit_mqd(mqd, q->mqd, q->mqd_mem_obj);
+
+ mutex_unlock(&dqm->lock);
+
+ return 0;
+
+failed:
+ mutex_unlock(&dqm->lock);
+ return retval;
+}
+
+/*
+ * Low bits must be 0000/FFFF as required by HW, high bits must be 0 to
+ * stay in user mode.
+ */
+#define APE1_FIXED_BITS_MASK 0xFFFF80000000FFFFULL
+/* APE1 limit is inclusive and 64K aligned. */
+#define APE1_LIMIT_ALIGNMENT 0xFFFF
+
+static bool set_cache_memory_policy(struct device_queue_manager *dqm,
+ struct qcm_process_device *qpd,
+ enum cache_policy default_policy,
+ enum cache_policy alternate_policy,
+ void __user *alternate_aperture_base,
+ uint64_t alternate_aperture_size)
+{
+ uint32_t default_mtype;
+ uint32_t ape1_mtype;
+
+ pr_debug("kfd: In func %s\n", __func__);
+
+ mutex_lock(&dqm->lock);
+
+ if (alternate_aperture_size == 0) {
+ /* base > limit disables APE1 */
+ qpd->sh_mem_ape1_base = 1;
+ qpd->sh_mem_ape1_limit = 0;
+ } else {
+ /*
+ * In FSA64, APE1_Base[63:0] = { 16{SH_MEM_APE1_BASE[31]},
+ * SH_MEM_APE1_BASE[31:0], 0x0000 }
+ * APE1_Limit[63:0] = { 16{SH_MEM_APE1_LIMIT[31]},
+ * SH_MEM_APE1_LIMIT[31:0], 0xFFFF }
+ * Verify that the base and size parameters can be
+ * represented in this format and convert them.
+ * Additionally restrict APE1 to user-mode addresses.
+ */
+
+ uint64_t base = (uintptr_t)alternate_aperture_base;
+ uint64_t limit = base + alternate_aperture_size - 1;
+
+ if (limit <= base)
+ goto out;
+
+ if ((base & APE1_FIXED_BITS_MASK) != 0)
+ goto out;
+
+ if ((limit & APE1_FIXED_BITS_MASK) != APE1_LIMIT_ALIGNMENT)
+ goto out;
+
+ qpd->sh_mem_ape1_base = base >> 16;
+ qpd->sh_mem_ape1_limit = limit >> 16;
+ }
+
+ default_mtype = (default_policy == cache_policy_coherent) ?
+ MTYPE_NONCACHED :
+ MTYPE_CACHED;
+
+ ape1_mtype = (alternate_policy == cache_policy_coherent) ?
+ MTYPE_NONCACHED :
+ MTYPE_CACHED;
+
+ qpd->sh_mem_config = (qpd->sh_mem_config & PTR32)
+ | ALIGNMENT_MODE(SH_MEM_ALIGNMENT_MODE_UNALIGNED)
+ | DEFAULT_MTYPE(default_mtype)
+ | APE1_MTYPE(ape1_mtype);
+
+ if ((sched_policy == KFD_SCHED_POLICY_NO_HWS) && (qpd->vmid != 0))
+ program_sh_mem_settings(dqm, qpd);
+
+ pr_debug("kfd: sh_mem_config: 0x%x, ape1_base: 0x%x, ape1_limit: 0x%x\n",
+ qpd->sh_mem_config, qpd->sh_mem_ape1_base,
+ qpd->sh_mem_ape1_limit);
+
+ mutex_unlock(&dqm->lock);
+ return true;
+
+out:
+ mutex_unlock(&dqm->lock);
+ return false;
+}
+
+struct device_queue_manager *device_queue_manager_init(struct kfd_dev *dev)
+{
+ struct device_queue_manager *dqm;
+
+ BUG_ON(!dev);
+
+ dqm = kzalloc(sizeof(struct device_queue_manager), GFP_KERNEL);
+ if (!dqm)
+ return NULL;
+
+ dqm->dev = dev;
+ switch (sched_policy) {
+ case KFD_SCHED_POLICY_HWS:
+ case KFD_SCHED_POLICY_HWS_NO_OVERSUBSCRIPTION:
+ /* initialize dqm for cp scheduling */
+ dqm->create_queue = create_queue_cpsch;
+ dqm->initialize = initialize_cpsch;
+ dqm->start = start_cpsch;
+ dqm->stop = stop_cpsch;
+ dqm->destroy_queue = destroy_queue_cpsch;
+ dqm->update_queue = update_queue;
+ dqm->get_mqd_manager = get_mqd_manager_nocpsch;
+ dqm->register_process = register_process_nocpsch;
+ dqm->unregister_process = unregister_process_nocpsch;
+ dqm->uninitialize = uninitialize_nocpsch;
+ dqm->create_kernel_queue = create_kernel_queue_cpsch;
+ dqm->destroy_kernel_queue = destroy_kernel_queue_cpsch;
+ dqm->set_cache_memory_policy = set_cache_memory_policy;
+ break;
+ case KFD_SCHED_POLICY_NO_HWS:
+ /* initialize dqm for no cp scheduling */
+ dqm->start = start_nocpsch;
+ dqm->stop = stop_nocpsch;
+ dqm->create_queue = create_queue_nocpsch;
+ dqm->destroy_queue = destroy_queue_nocpsch;
+ dqm->update_queue = update_queue;
+ dqm->get_mqd_manager = get_mqd_manager_nocpsch;
+ dqm->register_process = register_process_nocpsch;
+ dqm->unregister_process = unregister_process_nocpsch;
+ dqm->initialize = initialize_nocpsch;
+ dqm->uninitialize = uninitialize_nocpsch;
+ dqm->set_cache_memory_policy = set_cache_memory_policy;
+ break;
+ default:
+ BUG();
+ break;
+ }
+
+ if (dqm->initialize(dqm) != 0) {
+ kfree(dqm);
+ return NULL;
+ }
+
+ return dqm;
+}
+
+void device_queue_manager_uninit(struct device_queue_manager *dqm)
+{
+ BUG_ON(!dqm);
+
+ dqm->uninitialize(dqm);
+ kfree(dqm);
+}
+
@@ -42,6 +42,50 @@ struct device_process_node {
struct list_head list;
};
+/**
+ * struct device_queue_manager
+ *
+ * @create_queue: Queue creation routine.
+ *
+ * @destroy_queue: Queue destruction routine.
+ *
+ * @update_queue: Queue update routine.
+ *
+ * @get_mqd_manager: Returns the mqd manager according to the mqd type.
+ *
+ * @exeute_queues: Dispatches the queues list to the H/W.
+ *
+ * @register_process: This routine associates a specific process with device.
+ *
+ * @unregister_process: destroys the associations between process to device.
+ *
+ * @initialize: Initializes the pipelines and memory module for that device.
+ *
+ * @start: Initializes the resources/modules the the device needs for queues
+ * execution. This function is called on device initialization and after the
+ * system woke up after suspension.
+ *
+ * @stop: This routine stops execution of all the active queue running on the
+ * H/W and basically this function called on system suspend.
+ *
+ * @uninitialize: Destroys all the device queue manager resources allocated in
+ * initialize routine.
+ *
+ * @create_kernel_queue: Creates kernel queue. Used for debug queue.
+ *
+ * @destroy_kernel_queue: Destroys kernel queue. Used for debug queue.
+ *
+ * @set_cache_memory_policy: Sets memory policy (cached/ non cached) for the
+ * memory apertures.
+ *
+ * This struct is a base class for the kfd queues scheduler in the
+ * device level. The device base class should expose the basic operations
+ * for queue creation and queue destruction. This base class hides the
+ * scheduling mode of the driver and the specific implementation of the
+ * concrete device. This class is the only class in the queues scheduler
+ * that configures the H/W.
+ */
+
struct device_queue_manager {
int (*create_queue)(struct device_queue_manager *dqm,
struct queue *q,
@@ -52,8 +96,9 @@ struct device_queue_manager {
struct queue *q);
int (*update_queue)(struct device_queue_manager *dqm,
struct queue *q);
- struct mqd_manager * (*get_mqd_manager)(
- struct device_queue_manager *dqm,
+
+ struct mqd_manager * (*get_mqd_manager)
+ (struct device_queue_manager *dqm,
enum KFD_MQD_TYPE type);
int (*register_process)(struct device_queue_manager *dqm,
@@ -454,6 +454,8 @@ void kfd_process_destroy_wq(void);
struct kfd_process *kfd_create_process(const struct task_struct *);
struct kfd_process *kfd_get_process(const struct task_struct *);
+struct kfd_process_device *kfd_bind_process_to_device(struct kfd_dev *dev,
+ struct kfd_process *p);
void kfd_unbind_process_from_device(struct kfd_dev *dev, unsigned int pasid);
struct kfd_process_device *kfd_get_process_device_data(struct kfd_dev *dev,
struct kfd_process *p,
@@ -509,6 +511,10 @@ void uninit_queue(struct queue *q);
void print_queue_properties(struct queue_properties *q);
void print_queue(struct queue *q);
+struct mqd_manager *mqd_manager_init(enum KFD_MQD_TYPE type,
+ struct kfd_dev *dev);
+struct device_queue_manager *device_queue_manager_init(struct kfd_dev *dev);
+void device_queue_manager_uninit(struct device_queue_manager *dqm);
struct kernel_queue *kernel_queue_init(struct kfd_dev *dev,
enum kfd_queue_type type);
void kernel_queue_uninit(struct kernel_queue *kq);
@@ -537,6 +543,8 @@ int pqm_update_queue(struct process_queue_manager *pqm, unsigned int qid,
#define KFD_HIQ_TIMEOUT (500)
+#define KFD_FENCE_COMPLETED (100)
+#define KFD_FENCE_INIT (10)
#define KFD_UNMAP_LATENCY (150)
struct packet_manager {
@@ -547,6 +555,19 @@ struct packet_manager {
struct kfd_mem_obj *ib_buffer_obj;
};
+int pm_init(struct packet_manager *pm, struct device_queue_manager *dqm);
+void pm_uninit(struct packet_manager *pm);
+int pm_send_set_resources(struct packet_manager *pm,
+ struct scheduling_resources *res);
+int pm_send_runlist(struct packet_manager *pm, struct list_head *dqm_queues);
+int pm_send_query_status(struct packet_manager *pm, uint64_t fence_address,
+ uint32_t fence_value);
+
+int pm_send_unmap_queue(struct packet_manager *pm, enum kfd_queue_type type,
+ enum kfd_preempt_type_filter mode,
+ uint32_t filter_param, bool reset,
+ unsigned int sdma_engine);
+
void pm_release_ib(struct packet_manager *pm);
uint64_t kfd_get_number_elems(struct kfd_dev *kfd);