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drm/amdkfd: Record vmid pasid mapping in the driver for non HWS mode

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This makes possible the vmid pasid mapping query through software.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Yong Zhao 2019-09-25 23:49:46 -04:00 committed by Alex Deucher
parent 6027b1bf60
commit d9d4623c87
2 changed files with 25 additions and 13 deletions
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33
drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
View file

@ -195,20 +195,30 @@ static int allocate_vmid(struct device_queue_manager *dqm,
struct qcm_process_device *qpd,
struct queue *q)
{
int bit, allocated_vmid;
int allocated_vmid = -1, i;
if (dqm->vmid_bitmap == 0)
return -ENOMEM;
for (i = dqm->dev->vm_info.first_vmid_kfd;
i <= dqm->dev->vm_info.last_vmid_kfd; i++) {
if (!dqm->vmid_pasid[i]) {
allocated_vmid = i;
break;
}
}
bit = ffs(dqm->vmid_bitmap) - 1;
dqm->vmid_bitmap &= ~(1 << bit);
if (allocated_vmid < 0) {
pr_err("no more vmid to allocate\n");
return -ENOSPC;
}
pr_debug("vmid allocated: %d\n", allocated_vmid);
dqm->vmid_pasid[allocated_vmid] = q->process->pasid;
set_pasid_vmid_mapping(dqm, q->process->pasid, allocated_vmid);
allocated_vmid = bit + dqm->dev->vm_info.first_vmid_kfd;
pr_debug("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);
/* qpd->page_table_base is set earlier when register_process()
@ -249,8 +259,6 @@ static void deallocate_vmid(struct device_queue_manager *dqm,
struct qcm_process_device *qpd,
struct queue *q)
{
int bit = qpd->vmid - dqm->dev->vm_info.first_vmid_kfd;
/* On GFX v7, CP doesn't flush TC at dequeue */
if (q->device->device_info->asic_family == CHIP_HAWAII)
if (flush_texture_cache_nocpsch(q->device, qpd))
@ -260,8 +268,8 @@ static void deallocate_vmid(struct device_queue_manager *dqm,
/* Release the vmid mapping */
set_pasid_vmid_mapping(dqm, 0, qpd->vmid);
dqm->vmid_pasid[qpd->vmid] = 0;
dqm->vmid_bitmap |= (1 << bit);
qpd->vmid = 0;
q->properties.vmid = 0;
}
@ -880,7 +888,8 @@ static int initialize_nocpsch(struct device_queue_manager *dqm)
dqm->allocated_queues[pipe] |= 1 << queue;
}
dqm->vmid_bitmap = (1 << dqm->dev->vm_info.vmid_num_kfd) - 1;
memset(dqm->vmid_pasid, 0, sizeof(dqm->vmid_pasid));
dqm->sdma_bitmap = ~0ULL >> (64 - get_num_sdma_queues(dqm));
dqm->xgmi_sdma_bitmap = ~0ULL >> (64 - get_num_xgmi_sdma_queues(dqm));

5
drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h
View file

@ -32,6 +32,8 @@
#include "kfd_mqd_manager.h"
#define VMID_NUM 16
struct device_process_node {
struct qcm_process_device *qpd;
struct list_head list;
@ -185,7 +187,8 @@ struct device_queue_manager {
unsigned int *allocated_queues;
uint64_t sdma_bitmap;
uint64_t xgmi_sdma_bitmap;
unsigned int vmid_bitmap;
/* the pasid mapping for each kfd vmid */
uint16_t vmid_pasid[VMID_NUM];
uint64_t pipelines_addr;
struct kfd_mem_obj *pipeline_mem;
uint64_t fence_gpu_addr;