diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c | 346 |
1 files changed, 346 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c new file mode 100644 index 000000000000..adc31474e786 --- /dev/null +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c @@ -0,0 +1,346 @@ +/* + * 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/printk.h> +#include <linux/slab.h> +#include "kfd_priv.h" +#include "kfd_mqd_manager.h" +#include "cik_regs.h" +#include "../../radeon/cik_reg.h" + +inline void busy_wait(unsigned long ms) +{ + while (time_before(jiffies, ms)) + cpu_relax(); +} + +static inline struct cik_mqd *get_mqd(void *mqd) +{ + return (struct cik_mqd *)mqd; +} + +static int init_mqd(struct mqd_manager *mm, void **mqd, + struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr, + struct queue_properties *q) +{ + uint64_t addr; + struct cik_mqd *m; + int retval; + + BUG_ON(!mm || !q || !mqd); + + pr_debug("kfd: In func %s\n", __func__); + + retval = kfd2kgd->allocate_mem(mm->dev->kgd, + sizeof(struct cik_mqd), + 256, + KFD_MEMPOOL_SYSTEM_WRITECOMBINE, + (struct kgd_mem **) mqd_mem_obj); + + if (retval != 0) + return -ENOMEM; + + m = (struct cik_mqd *) (*mqd_mem_obj)->cpu_ptr; + addr = (*mqd_mem_obj)->gpu_addr; + + memset(m, 0, ALIGN(sizeof(struct cik_mqd), 256)); + + m->header = 0xC0310800; + m->compute_pipelinestat_enable = 1; + m->compute_static_thread_mgmt_se0 = 0xFFFFFFFF; + m->compute_static_thread_mgmt_se1 = 0xFFFFFFFF; + m->compute_static_thread_mgmt_se2 = 0xFFFFFFFF; + m->compute_static_thread_mgmt_se3 = 0xFFFFFFFF; + + /* + * Make sure to use the last queue state saved on mqd when the cp + * reassigns the queue, so when queue is switched on/off (e.g over + * subscription or quantum timeout) the context will be consistent + */ + m->cp_hqd_persistent_state = + DEFAULT_CP_HQD_PERSISTENT_STATE | PRELOAD_REQ; + + m->cp_mqd_control = MQD_CONTROL_PRIV_STATE_EN; + m->cp_mqd_base_addr_lo = lower_32_bits(addr); + m->cp_mqd_base_addr_hi = upper_32_bits(addr); + + m->cp_hqd_ib_control = DEFAULT_MIN_IB_AVAIL_SIZE | IB_ATC_EN; + /* Although WinKFD writes this, I suspect it should not be necessary */ + m->cp_hqd_ib_control = IB_ATC_EN | DEFAULT_MIN_IB_AVAIL_SIZE; + + m->cp_hqd_quantum = QUANTUM_EN | QUANTUM_SCALE_1MS | + QUANTUM_DURATION(10); + + /* + * Pipe Priority + * Identifies the pipe relative priority when this queue is connected + * to the pipeline. The pipe priority is against the GFX pipe and HP3D. + * In KFD we are using a fixed pipe priority set to CS_MEDIUM. + * 0 = CS_LOW (typically below GFX) + * 1 = CS_MEDIUM (typically between HP3D and GFX + * 2 = CS_HIGH (typically above HP3D) + */ + m->cp_hqd_pipe_priority = 1; + m->cp_hqd_queue_priority = 15; + + *mqd = m; + if (gart_addr != NULL) + *gart_addr = addr; + retval = mm->update_mqd(mm, m, q); + + return retval; +} + +static void uninit_mqd(struct mqd_manager *mm, void *mqd, + struct kfd_mem_obj *mqd_mem_obj) +{ + BUG_ON(!mm || !mqd); + kfd2kgd->free_mem(mm->dev->kgd, (struct kgd_mem *) mqd_mem_obj); +} + +static int load_mqd(struct mqd_manager *mm, void *mqd, uint32_t pipe_id, + uint32_t queue_id, uint32_t __user *wptr) +{ + return kfd2kgd->hqd_load(mm->dev->kgd, mqd, pipe_id, queue_id, wptr); + +} + +static int update_mqd(struct mqd_manager *mm, void *mqd, + struct queue_properties *q) +{ + struct cik_mqd *m; + + BUG_ON(!mm || !q || !mqd); + + pr_debug("kfd: In func %s\n", __func__); + + m = get_mqd(mqd); + m->cp_hqd_pq_control = DEFAULT_RPTR_BLOCK_SIZE | + DEFAULT_MIN_AVAIL_SIZE | PQ_ATC_EN; + + /* + * Calculating queue size which is log base 2 of actual queue size -1 + * dwords and another -1 for ffs + */ + m->cp_hqd_pq_control |= ffs(q->queue_size / sizeof(unsigned int)) + - 1 - 1; + m->cp_hqd_pq_base_lo = lower_32_bits((uint64_t)q->queue_address >> 8); + m->cp_hqd_pq_base_hi = upper_32_bits((uint64_t)q->queue_address >> 8); + m->cp_hqd_pq_rptr_report_addr_lo = lower_32_bits((uint64_t)q->read_ptr); + m->cp_hqd_pq_rptr_report_addr_hi = upper_32_bits((uint64_t)q->read_ptr); + m->cp_hqd_pq_doorbell_control = DOORBELL_EN | + DOORBELL_OFFSET(q->doorbell_off); + + m->cp_hqd_vmid = q->vmid; + + if (q->format == KFD_QUEUE_FORMAT_AQL) { + m->cp_hqd_iq_rptr = AQL_ENABLE; + m->cp_hqd_pq_control |= NO_UPDATE_RPTR; + } + + m->cp_hqd_active = 0; + q->is_active = false; + if (q->queue_size > 0 && + q->queue_address != 0 && + q->queue_percent > 0) { + m->cp_hqd_active = 1; + q->is_active = true; + } + + return 0; +} + +static int destroy_mqd(struct mqd_manager *mm, void *mqd, + enum kfd_preempt_type type, + unsigned int timeout, uint32_t pipe_id, + uint32_t queue_id) +{ + return kfd2kgd->hqd_destroy(mm->dev->kgd, type, timeout, + pipe_id, queue_id); +} + +static bool is_occupied(struct mqd_manager *mm, void *mqd, + uint64_t queue_address, uint32_t pipe_id, + uint32_t queue_id) +{ + + return kfd2kgd->hqd_is_occupies(mm->dev->kgd, queue_address, + pipe_id, queue_id); + +} + +/* + * HIQ MQD Implementation, concrete implementation for HIQ MQD implementation. + * The HIQ queue in Kaveri is using the same MQD structure as all the user mode + * queues but with different initial values. + */ + +static int init_mqd_hiq(struct mqd_manager *mm, void **mqd, + struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr, + struct queue_properties *q) +{ + uint64_t addr; + struct cik_mqd *m; + int retval; + + BUG_ON(!mm || !q || !mqd || !mqd_mem_obj); + + pr_debug("kfd: In func %s\n", __func__); + + retval = kfd2kgd->allocate_mem(mm->dev->kgd, + sizeof(struct cik_mqd), + 256, + KFD_MEMPOOL_SYSTEM_WRITECOMBINE, + (struct kgd_mem **) mqd_mem_obj); + + if (retval != 0) + return -ENOMEM; + + m = (struct cik_mqd *) (*mqd_mem_obj)->cpu_ptr; + addr = (*mqd_mem_obj)->gpu_addr; + + memset(m, 0, ALIGN(sizeof(struct cik_mqd), 256)); + + m->header = 0xC0310800; + m->compute_pipelinestat_enable = 1; + m->compute_static_thread_mgmt_se0 = 0xFFFFFFFF; + m->compute_static_thread_mgmt_se1 = 0xFFFFFFFF; + m->compute_static_thread_mgmt_se2 = 0xFFFFFFFF; + m->compute_static_thread_mgmt_se3 = 0xFFFFFFFF; + + m->cp_hqd_persistent_state = DEFAULT_CP_HQD_PERSISTENT_STATE | + PRELOAD_REQ; + m->cp_hqd_quantum = QUANTUM_EN | QUANTUM_SCALE_1MS | + QUANTUM_DURATION(10); + + m->cp_mqd_control = MQD_CONTROL_PRIV_STATE_EN; + m->cp_mqd_base_addr_lo = lower_32_bits(addr); + m->cp_mqd_base_addr_hi = upper_32_bits(addr); + + m->cp_hqd_ib_control = DEFAULT_MIN_IB_AVAIL_SIZE; + + /* + * Pipe Priority + * Identifies the pipe relative priority when this queue is connected + * to the pipeline. The pipe priority is against the GFX pipe and HP3D. + * In KFD we are using a fixed pipe priority set to CS_MEDIUM. + * 0 = CS_LOW (typically below GFX) + * 1 = CS_MEDIUM (typically between HP3D and GFX + * 2 = CS_HIGH (typically above HP3D) + */ + m->cp_hqd_pipe_priority = 1; + m->cp_hqd_queue_priority = 15; + + *mqd = m; + if (gart_addr) + *gart_addr = addr; + retval = mm->update_mqd(mm, m, q); + + return retval; +} + +static int update_mqd_hiq(struct mqd_manager *mm, void *mqd, + struct queue_properties *q) +{ + struct cik_mqd *m; + + BUG_ON(!mm || !q || !mqd); + + pr_debug("kfd: In func %s\n", __func__); + + m = get_mqd(mqd); + m->cp_hqd_pq_control = DEFAULT_RPTR_BLOCK_SIZE | + DEFAULT_MIN_AVAIL_SIZE | + PRIV_STATE | + KMD_QUEUE; + + /* + * Calculating queue size which is log base 2 of actual queue + * size -1 dwords + */ + m->cp_hqd_pq_control |= ffs(q->queue_size / sizeof(unsigned int)) + - 1 - 1; + m->cp_hqd_pq_base_lo = lower_32_bits((uint64_t)q->queue_address >> 8); + m->cp_hqd_pq_base_hi = upper_32_bits((uint64_t)q->queue_address >> 8); + m->cp_hqd_pq_rptr_report_addr_lo = lower_32_bits((uint64_t)q->read_ptr); + m->cp_hqd_pq_rptr_report_addr_hi = upper_32_bits((uint64_t)q->read_ptr); + m->cp_hqd_pq_doorbell_control = DOORBELL_EN | + DOORBELL_OFFSET(q->doorbell_off); + + m->cp_hqd_vmid = q->vmid; + + m->cp_hqd_active = 0; + q->is_active = false; + if (q->queue_size > 0 && + q->queue_address != 0 && + q->queue_percent > 0) { + m->cp_hqd_active = 1; + q->is_active = true; + } + + return 0; +} + +struct mqd_manager *mqd_manager_init(enum KFD_MQD_TYPE type, + struct kfd_dev *dev) +{ + struct mqd_manager *mqd; + + BUG_ON(!dev); + BUG_ON(type >= KFD_MQD_TYPE_MAX); + + pr_debug("kfd: In func %s\n", __func__); + + mqd = kzalloc(sizeof(struct mqd_manager), GFP_KERNEL); + if (!mqd) + return NULL; + + mqd->dev = dev; + + switch (type) { + case KFD_MQD_TYPE_CIK_CP: + case KFD_MQD_TYPE_CIK_COMPUTE: + mqd->init_mqd = init_mqd; + mqd->uninit_mqd = uninit_mqd; + mqd->load_mqd = load_mqd; + mqd->update_mqd = update_mqd; + mqd->destroy_mqd = destroy_mqd; + mqd->is_occupied = is_occupied; + break; + case KFD_MQD_TYPE_CIK_HIQ: + mqd->init_mqd = init_mqd_hiq; + mqd->uninit_mqd = uninit_mqd; + mqd->load_mqd = load_mqd; + mqd->update_mqd = update_mqd_hiq; + mqd->destroy_mqd = destroy_mqd; + mqd->is_occupied = is_occupied; + break; + default: + kfree(mqd); + return NULL; + } + + return mqd; +} + +/* SDMA queues should be implemented here when the cp will supports them */ |
