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/*
* 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/mutex.h>
#include "kfd_device_queue_manager.h"
#include "kfd_kernel_queue.h"
#include "kfd_priv.h"
#include "kfd_pm4_headers.h"
#include "kfd_pm4_headers_vi.h"
#include "kfd_pm4_opcodes.h"
static inline void inc_wptr(unsigned int *wptr, unsigned int increment_bytes,
unsigned int buffer_size_bytes)
{
unsigned int temp = *wptr + increment_bytes / sizeof(uint32_t);
BUG_ON((temp * sizeof(uint32_t)) > buffer_size_bytes);
*wptr = temp;
}
static unsigned int build_pm4_header(unsigned int opcode, size_t packet_size)
{
union PM4_MES_TYPE_3_HEADER header;
header.u32all = 0;
header.opcode = opcode;
header.count = packet_size/sizeof(uint32_t) - 2;
header.type = PM4_TYPE_3;
return header.u32all;
}
static void pm_calc_rlib_size(struct packet_manager *pm,
unsigned int *rlib_size,
bool *over_subscription)
{
unsigned int process_count, queue_count;
unsigned int map_queue_size;
BUG_ON(!pm || !rlib_size || !over_subscription);
process_count = pm->dqm->processes_count;
queue_count = pm->dqm->queue_count;
/* check if there is over subscription*/
*over_subscription = false;
if ((process_count > 1) ||
queue_count > PIPE_PER_ME_CP_SCHEDULING * QUEUES_PER_PIPE) {
*over_subscription = true;
pr_debug("kfd: over subscribed runlist\n");
}
map_queue_size =
(pm->dqm->dev->device_info->asic_family == CHIP_CARRIZO) ?
sizeof(struct pm4_mes_map_queues) :
sizeof(struct pm4_map_queues);
/* calculate run list ib allocation size */
*rlib_size = process_count * sizeof(struct pm4_map_process) +
queue_count * map_queue_size;
/*
* Increase the allocation size in case we need a chained run list
* when over subscription
*/
if (*over_subscription)
*rlib_size += sizeof(struct pm4_runlist);
pr_debug("kfd: runlist ib size %d\n", *rlib_size);
}
static int pm_allocate_runlist_ib(struct packet_manager *pm,
unsigned int **rl_buffer,
uint64_t *rl_gpu_buffer,
unsigned int *rl_buffer_size,
bool *is_over_subscription)
{
int retval;
BUG_ON(!pm);
BUG_ON(pm->allocated == true);
BUG_ON(is_over_subscription == NULL);
pm_calc_rlib_size(pm, rl_buffer_size, is_over_subscription);
retval = kfd_gtt_sa_allocate(pm->dqm->dev, *rl_buffer_size,
&pm->ib_buffer_obj);
if (retval != 0) {
pr_err("kfd: failed to allocate runlist IB\n");
return retval;
}
*(void **)rl_buffer = pm->ib_buffer_obj->cpu_ptr;
*rl_gpu_buffer = pm->ib_buffer_obj->gpu_addr;
memset(*rl_buffer, 0, *rl_buffer_size);
pm->allocated = true;
return retval;
}
static int pm_create_runlist(struct packet_manager *pm, uint32_t *buffer,
uint64_t ib, size_t ib_size_in_dwords, bool chain)
{
struct pm4_runlist *packet;
BUG_ON(!pm || !buffer || !ib);
packet = (struct pm4_runlist *)buffer;
memset(buffer, 0, sizeof(struct pm4_runlist));
packet->header.u32all = build_pm4_header(IT_RUN_LIST,
sizeof(struct pm4_runlist));
packet->bitfields4.ib_size = ib_size_in_dwords;
packet->bitfields4.chain = chain ? 1 : 0;
packet->bitfields4.offload_polling = 0;
packet->bitfields4.valid = 1;
packet->ordinal2 = lower_32_bits(ib);
packet->bitfields3.ib_base_hi = upper_32_bits(ib);
return 0;
}
static int pm_create_map_process(struct packet_manager *pm, uint32_t *buffer,
struct qcm_process_device *qpd)
{
struct pm4_map_process *packet;
struct queue *cur;
uint32_t num_queues;
BUG_ON(!pm || !buffer || !qpd);
packet = (struct pm4_map_process *)buffer;
pr_debug("kfd: In func %s\n", __func__);
memset(buffer, 0, sizeof(struct pm4_map_process));
packet->header.u32all = build_pm4_header(IT_MAP_PROCESS,
sizeof(struct pm4_map_process));
packet->bitfields2.diq_enable = (qpd->is_debug) ? 1 : 0;
packet->bitfields2.process_quantum = 1;
packet->bitfields2.pasid = qpd->pqm->process->pasid;
packet->bitfields3.page_table_base = qpd->page_table_base;
packet->bitfields10.gds_size = qpd->gds_size;
packet->bitfields10.num_gws = qpd->num_gws;
packet->bitfields10.num_oac = qpd->num_oac;
num_queues = 0;
list_for_each_entry(cur, &qpd->queues_list, list)
num_queues++;
packet->bitfields10.num_queues = (qpd->is_debug) ? 0 : num_queues;
packet->sh_mem_config = qpd->sh_mem_config;
packet->sh_mem_bases = qpd->sh_mem_bases;
packet->sh_mem_ape1_base = qpd->sh_mem_ape1_base;
packet->sh_mem_ape1_limit = qpd->sh_mem_ape1_limit;
packet->gds_addr_lo = lower_32_bits(qpd->gds_context_area);
packet->gds_addr_hi = upper_32_bits(qpd->gds_context_area);
return 0;
}
static int pm_create_map_queue(struct packet_manager *pm, uint32_t *buffer,
struct queue *q, bool is_static)
{
struct pm4_map_queues *packet;
bool use_static = is_static;
BUG_ON(!pm || !buffer || !q);
pr_debug("kfd: In func %s\n", __func__);
packet = (struct pm4_map_queues *)buffer;
memset(buffer, 0, sizeof(struct pm4_map_queues));
packet->header.u32all = build_pm4_header(IT_MAP_QUEUES,
sizeof(struct pm4_map_queues));
packet->bitfields2.alloc_format =
alloc_format__mes_map_queues__one_per_pipe;
packet->bitfields2.num_queues = 1;
packet->bitfields2.queue_sel =
queue_sel__mes_map_queues__map_to_hws_determined_queue_slots;
packet->bitfields2.vidmem = (q->properties.is_interop) ?
vidmem__mes_map_queues__uses_video_memory :
vidmem__mes_map_queues__uses_no_video_memory;
switch (q->properties.type) {
case KFD_QUEUE_TYPE_COMPUTE:
case KFD_QUEUE_TYPE_DIQ:
packet->bitfields2.engine_sel =
engine_sel__mes_map_queues__compute;
break;
case KFD_QUEUE_TYPE_SDMA:
packet->bitfields2.engine_sel =
engine_sel__mes_map_queues__sdma0;
use_static = false; /* no static queues under SDMA */
break;
default:
BUG();
break;
}
packet->mes_map_queues_ordinals[0].bitfields3.doorbell_offset =
q->properties.doorbell_off;
packet->mes_map_queues_ordinals[0].bitfields3.is_static =
(use_static == true) ? 1 : 0;
packet->mes_map_queues_ordinals[0].mqd_addr_lo =
lower_32_bits(q->gart_mqd_addr);
packet->mes_map_queues_ordinals[0].mqd_addr_hi =
upper_32_bits(q->gart_mqd_addr);
packet->mes_map_queues_ordinals[0].wptr_addr_lo =
lower_32_bits((uint64_t)q->properties.write_ptr);
packet->mes_map_queues_ordinals[0].wptr_addr_hi =
upper_32_bits((uint64_t)q->properties.write_ptr);
return 0;
}
static int pm_create_runlist_ib(struct packet_manager *pm,
struct list_head *queues,
uint64_t *rl_gpu_addr,
size_t *rl_size_bytes)
{
unsigned int alloc_size_bytes;
unsigned int *rl_buffer, rl_wptr, i;
int retval, proccesses_mapped;
struct device_process_node *cur;
struct qcm_process_device *qpd;
struct queue *q;
struct kernel_queue *kq;
bool is_over_subscription;
BUG_ON(!pm || !queues || !rl_size_bytes || !rl_gpu_addr);
rl_wptr = retval = proccesses_mapped = 0;
retval = pm_allocate_runlist_ib(pm, &rl_buffer, rl_gpu_addr,
&alloc_size_bytes, &is_over_subscription);
if (retval != 0)
return retval;
*rl_size_bytes = alloc_size_bytes;
pr_debug("kfd: In func %s\n", __func__);
pr_debug("kfd: building runlist ib process count: %d queues count %d\n",
pm->dqm->processes_count, pm->dqm->queue_count);
/* build the run list ib packet */
list_for_each_entry(cur, queues, list) {
qpd = cur->qpd;
/* build map process packet */
if (proccesses_mapped >= pm->dqm->processes_count) {
pr_debug("kfd: not enough space left in runlist IB\n");
pm_release_ib(pm);
return -ENOMEM;
}
retval = pm_create_map_process(pm, &rl_buffer[rl_wptr], qpd);
if (retval != 0)
return retval;
proccesses_mapped++;
inc_wptr(&rl_wptr, sizeof(struct pm4_map_process),
alloc_size_bytes);
list_for_each_entry(kq, &qpd->priv_queue_list, list) {
if (kq->queue->properties.is_active != true)
continue;
pr_debug("kfd: static_queue, mapping kernel q %d, is debug status %d\n",
kq->queue->queue, qpd->is_debug);
retval = pm_create_map_queue(pm, &rl_buffer[rl_wptr],
kq->queue, qpd->is_debug);
if (retval != 0)
return retval;
inc_wptr(&rl_wptr,
sizeof(struct pm4_map_queues),
alloc_size_bytes);
}
list_for_each_entry(q, &qpd->queues_list, list) {
if (q->properties.is_active != true)
continue;
pr_debug("kfd: static_queue, mapping user queue %d, is debug status %d\n",
q->queue, qpd->is_debug);
retval = pm_create_map_queue(pm, &rl_buffer[rl_wptr],
q, qpd->is_debug);
if (retval != 0)
return retval;
inc_wptr(&rl_wptr,
sizeof(struct pm4_map_queues),
alloc_size_bytes);
}
}
pr_debug("kfd: finished map process and queues to runlist\n");
if (is_over_subscription)
pm_create_runlist(pm, &rl_buffer[rl_wptr], *rl_gpu_addr,
alloc_size_bytes / sizeof(uint32_t), true);
for (i = 0; i < alloc_size_bytes / sizeof(uint32_t); i++)
pr_debug("0x%2X ", rl_buffer[i]);
pr_debug("\n");
return 0;
}
int pm_init(struct packet_manager *pm, struct device_queue_manager *dqm)
{
BUG_ON(!dqm);
pm->dqm = dqm;
mutex_init(&pm->lock);
pm->priv_queue = kernel_queue_init(dqm->dev, KFD_QUEUE_TYPE_HIQ);
if (pm->priv_queue == NULL) {
mutex_destroy(&pm->lock);
return -ENOMEM;
}
pm->allocated = false;
return 0;
}
void pm_uninit(struct packet_manager *pm)
{
BUG_ON(!pm);
mutex_destroy(&pm->lock);
kernel_queue_uninit(pm->priv_queue);
}
int pm_send_set_resources(struct packet_manager *pm,
struct scheduling_resources *res)
{
struct pm4_set_resources *packet;
BUG_ON(!pm || !res);
pr_debug("kfd: In func %s\n", __func__);
mutex_lock(&pm->lock);
pm->priv_queue->ops.acquire_packet_buffer(pm->priv_queue,
sizeof(*packet) / sizeof(uint32_t),
(unsigned int **)&packet);
if (packet == NULL) {
mutex_unlock(&pm->lock);
pr_err("kfd: failed to allocate buffer on kernel queue\n");
return -ENOMEM;
}
memset(packet, 0, sizeof(struct pm4_set_resources));
packet->header.u32all = build_pm4_header(IT_SET_RESOURCES,
sizeof(struct pm4_set_resources));
packet->bitfields2.queue_type =
queue_type__mes_set_resources__hsa_interface_queue_hiq;
packet->bitfields2.vmid_mask = res->vmid_mask;
packet->bitfields2.unmap_latency = KFD_UNMAP_LATENCY;
packet->bitfields7.oac_mask = res->oac_mask;
packet->bitfields8.gds_heap_base = res->gds_heap_base;
packet->bitfields8.gds_heap_size = res->gds_heap_size;
packet->gws_mask_lo = lower_32_bits(res->gws_mask);
packet->gws_mask_hi = upper_32_bits(res->gws_mask);
packet->queue_mask_lo = lower_32_bits(res->queue_mask);
packet->queue_mask_hi = upper_32_bits(res->queue_mask);
pm->priv_queue->ops.submit_packet(pm->priv_queue);
mutex_unlock(&pm->lock);
return 0;
}
int pm_send_runlist(struct packet_manager *pm, struct list_head *dqm_queues)
{
uint64_t rl_gpu_ib_addr;
uint32_t *rl_buffer;
size_t rl_ib_size, packet_size_dwords;
int retval;
BUG_ON(!pm || !dqm_queues);
retval = pm_create_runlist_ib(pm, dqm_queues, &rl_gpu_ib_addr,
&rl_ib_size);
if (retval != 0)
goto fail_create_runlist_ib;
pr_debug("kfd: runlist IB address: 0x%llX\n", rl_gpu_ib_addr);
packet_size_dwords = sizeof(struct pm4_runlist) / sizeof(uint32_t);
mutex_lock(&pm->lock);
retval = pm->priv_queue->ops.acquire_packet_buffer(pm->priv_queue,
packet_size_dwords, &rl_buffer);
if (retval != 0)
goto fail_acquire_packet_buffer;
retval = pm_create_runlist(pm, rl_buffer, rl_gpu_ib_addr,
rl_ib_size / sizeof(uint32_t), false);
if (retval != 0)
goto fail_create_runlist;
pm->priv_queue->ops.submit_packet(pm->priv_queue);
mutex_unlock(&pm->lock);
return retval;
fail_create_runlist:
pm->priv_queue->ops.rollback_packet(pm->priv_queue);
fail_acquire_packet_buffer:
mutex_unlock(&pm->lock);
fail_create_runlist_ib:
if (pm->allocated == true)
pm_release_ib(pm);
return retval;
}
int pm_send_query_status(struct packet_manager *pm, uint64_t fence_address,
uint32_t fence_value)
{
int retval;
struct pm4_query_status *packet;
BUG_ON(!pm || !fence_address);
mutex_lock(&pm->lock);
retval = pm->priv_queue->ops.acquire_packet_buffer(
pm->priv_queue,
sizeof(struct pm4_query_status) / sizeof(uint32_t),
(unsigned int **)&packet);
if (retval != 0)
goto fail_acquire_packet_buffer;
packet->header.u32all = build_pm4_header(IT_QUERY_STATUS,
sizeof(struct pm4_query_status));
packet->bitfields2.context_id = 0;
packet->bitfields2.interrupt_sel =
interrupt_sel__mes_query_status__completion_status;
packet->bitfields2.command =
command__mes_query_status__fence_only_after_write_ack;
packet->addr_hi = upper_32_bits((uint64_t)fence_address);
packet->addr_lo = lower_32_bits((uint64_t)fence_address);
packet->data_hi = upper_32_bits((uint64_t)fence_value);
packet->data_lo = lower_32_bits((uint64_t)fence_value);
pm->priv_queue->ops.submit_packet(pm->priv_queue);
mutex_unlock(&pm->lock);
return 0;
fail_acquire_packet_buffer:
mutex_unlock(&pm->lock);
return retval;
}
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)
{
int retval;
uint32_t *buffer;
struct pm4_unmap_queues *packet;
BUG_ON(!pm);
mutex_lock(&pm->lock);
retval = pm->priv_queue->ops.acquire_packet_buffer(
pm->priv_queue,
sizeof(struct pm4_unmap_queues) / sizeof(uint32_t),
&buffer);
if (retval != 0)
goto err_acquire_packet_buffer;
packet = (struct pm4_unmap_queues *)buffer;
memset(buffer, 0, sizeof(struct pm4_unmap_queues));
pr_debug("kfd: static_queue: unmapping queues: mode is %d , reset is %d , type is %d\n",
mode, reset, type);
packet->header.u32all = build_pm4_header(IT_UNMAP_QUEUES,
sizeof(struct pm4_unmap_queues));
switch (type) {
case KFD_QUEUE_TYPE_COMPUTE:
case KFD_QUEUE_TYPE_DIQ:
packet->bitfields2.engine_sel =
engine_sel__mes_unmap_queues__compute;
break;
case KFD_QUEUE_TYPE_SDMA:
packet->bitfields2.engine_sel =
engine_sel__mes_unmap_queues__sdma0 + sdma_engine;
break;
default:
BUG();
break;
}
if (reset)
packet->bitfields2.action =
action__mes_unmap_queues__reset_queues;
else
packet->bitfields2.action =
action__mes_unmap_queues__preempt_queues;
switch (mode) {
case KFD_PREEMPT_TYPE_FILTER_SINGLE_QUEUE:
packet->bitfields2.queue_sel =
queue_sel__mes_unmap_queues__perform_request_on_specified_queues;
packet->bitfields2.num_queues = 1;
packet->bitfields3b.doorbell_offset0 = filter_param;
break;
case KFD_PREEMPT_TYPE_FILTER_BY_PASID:
packet->bitfields2.queue_sel =
queue_sel__mes_unmap_queues__perform_request_on_pasid_queues;
packet->bitfields3a.pasid = filter_param;
break;
case KFD_PREEMPT_TYPE_FILTER_ALL_QUEUES:
packet->bitfields2.queue_sel =
queue_sel__mes_unmap_queues__perform_request_on_all_active_queues;
break;
case KFD_PREEMPT_TYPE_FILTER_DYNAMIC_QUEUES:
/* in this case, we do not preempt static queues */
packet->bitfields2.queue_sel =
queue_sel__mes_unmap_queues__perform_request_on_dynamic_queues_only;
break;
default:
BUG();
break;
};
pm->priv_queue->ops.submit_packet(pm->priv_queue);
mutex_unlock(&pm->lock);
return 0;
err_acquire_packet_buffer:
mutex_unlock(&pm->lock);
return retval;
}
void pm_release_ib(struct packet_manager *pm)
{
BUG_ON(!pm);
mutex_lock(&pm->lock);
if (pm->allocated) {
kfd_gtt_sa_free(pm->dqm->dev, pm->ib_buffer_obj);
pm->allocated = false;
}
mutex_unlock(&pm->lock);
}
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