[PATCH 14/33] drm/amdgpu: prepare map process for multi-process debug devices
Kim, Jonathan
Jonathan.Kim at amd.com
Tue May 30 19:58:32 UTC 2023
[Public]
> -----Original Message-----
> From: Kuehling, Felix <Felix.Kuehling at amd.com>
> Sent: Tuesday, May 30, 2023 3:56 PM
> To: Kim, Jonathan <Jonathan.Kim at amd.com>; amd-
> gfx at lists.freedesktop.org; dri-devel at lists.freedesktop.org
> Cc: Huang, JinHuiEric <JinHuiEric.Huang at amd.com>
> Subject: Re: [PATCH 14/33] drm/amdgpu: prepare map process for multi-
> process debug devices
>
> Am 2023-05-25 um 13:27 schrieb Jonathan Kim:
> > Unlike single process debug devices, multi-process debug devices allow
> > debug mode setting per-VMID (non-device-global).
> >
> > Because the HWS manages PASID-VMID mapping, the new MAP_PROCESS
> API allows
> > the KFD to forward the required SPI debug register write requests.
> >
> > To request a new debug mode setting change, the KFD must be able to
> > preempt all queues then remap all queues with these new setting
> > requests for MAP_PROCESS to take effect.
> >
> > Note that by default, trap enablement in non-debug mode must be
> disabled
> > for performance reasons for multi-process debug devices due to setup
> > overhead in FW.
> >
> > v2: spot fixup new kfd_node references
> >
> > Signed-off-by: Jonathan Kim <jonathan.kim at amd.com>
> > ---
> > drivers/gpu/drm/amd/amdkfd/kfd_debug.h | 5 ++
> > .../drm/amd/amdkfd/kfd_device_queue_manager.c | 51
> +++++++++++++++++++
> > .../drm/amd/amdkfd/kfd_device_queue_manager.h | 3 ++
> > .../drm/amd/amdkfd/kfd_packet_manager_v9.c | 14 +++++
> > drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 9 ++++
> > drivers/gpu/drm/amd/amdkfd/kfd_process.c | 5 ++
> > 6 files changed, 87 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_debug.h
> b/drivers/gpu/drm/amd/amdkfd/kfd_debug.h
> > index a8abfe2a0a14..db6d72e7930f 100644
> > --- a/drivers/gpu/drm/amd/amdkfd/kfd_debug.h
> > +++ b/drivers/gpu/drm/amd/amdkfd/kfd_debug.h
> > @@ -29,4 +29,9 @@ int kfd_dbg_trap_disable(struct kfd_process *target);
> > int kfd_dbg_trap_enable(struct kfd_process *target, uint32_t fd,
> > void __user *runtime_info,
> > uint32_t *runtime_info_size);
> > +static inline bool kfd_dbg_is_per_vmid_supported(struct kfd_node *dev)
> > +{
> > + return KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 2);
>
> This needs to be updated to include 9.4.3 as well. Is that coming in a
> different patch? Other than that, this patch is
That's correct. This series does not enable the debugger for GFX9.4.3.
This will be a follow-up series that Eric will provide.
Thanks.
Jon
>
> Reviewed-by: Felix Kuehling <Felix.Kuehling at amd.com>
>
>
> > +}
> > +
> > #endif
> > diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> > index c8519adc89ac..badfe1210bc4 100644
> > --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> > +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> > @@ -36,6 +36,7 @@
> > #include "kfd_kernel_queue.h"
> > #include "amdgpu_amdkfd.h"
> > #include "mes_api_def.h"
> > +#include "kfd_debug.h"
> >
> > /* Size of the per-pipe EOP queue */
> > #define CIK_HPD_EOP_BYTES_LOG2 11
> > @@ -2593,6 +2594,56 @@ int release_debug_trap_vmid(struct
> device_queue_manager *dqm,
> > return r;
> > }
> >
> > +int debug_lock_and_unmap(struct device_queue_manager *dqm)
> > +{
> > + int r;
> > +
> > + if (dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) {
> > + pr_err("Unsupported on sched_policy: %i\n", dqm-
> >sched_policy);
> > + return -EINVAL;
> > + }
> > +
> > + if (!kfd_dbg_is_per_vmid_supported(dqm->dev))
> > + return 0;
> > +
> > + dqm_lock(dqm);
> > +
> > + r = unmap_queues_cpsch(dqm,
> KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0, 0, false);
> > + if (r)
> > + dqm_unlock(dqm);
> > +
> > + return r;
> > +}
> > +
> > +int debug_map_and_unlock(struct device_queue_manager *dqm)
> > +{
> > + int r;
> > +
> > + if (dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) {
> > + pr_err("Unsupported on sched_policy: %i\n", dqm-
> >sched_policy);
> > + return -EINVAL;
> > + }
> > +
> > + if (!kfd_dbg_is_per_vmid_supported(dqm->dev))
> > + return 0;
> > +
> > + r = map_queues_cpsch(dqm);
> > +
> > + dqm_unlock(dqm);
> > +
> > + return r;
> > +}
> > +
> > +int debug_refresh_runlist(struct device_queue_manager *dqm)
> > +{
> > + int r = debug_lock_and_unmap(dqm);
> > +
> > + if (r)
> > + return r;
> > +
> > + return debug_map_and_unlock(dqm);
> > +}
> > +
> > #if defined(CONFIG_DEBUG_FS)
> >
> > static void seq_reg_dump(struct seq_file *m,
> > diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h
> b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h
> > index bf7aa3f84182..bb75d93712eb 100644
> > --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h
> > +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h
> > @@ -290,6 +290,9 @@ int reserve_debug_trap_vmid(struct
> device_queue_manager *dqm,
> > struct qcm_process_device *qpd);
> > int release_debug_trap_vmid(struct device_queue_manager *dqm,
> > struct qcm_process_device *qpd);
> > +int debug_lock_and_unmap(struct device_queue_manager *dqm);
> > +int debug_map_and_unlock(struct device_queue_manager *dqm);
> > +int debug_refresh_runlist(struct device_queue_manager *dqm);
> >
> > static inline unsigned int get_sh_mem_bases_32(struct
> kfd_process_device *pdd)
> > {
> > diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager_v9.c
> b/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager_v9.c
> > index 0fe73dbd28af..29a2d0499b67 100644
> > --- a/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager_v9.c
> > +++ b/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager_v9.c
> > @@ -88,6 +88,10 @@ static int pm_map_process_aldebaran(struct
> packet_manager *pm,
> > {
> > struct pm4_mes_map_process_aldebaran *packet;
> > uint64_t vm_page_table_base_addr = qpd->page_table_base;
> > + struct kfd_dev *kfd = pm->dqm->dev->kfd;
> > + struct kfd_process_device *pdd =
> > + container_of(qpd, struct kfd_process_device, qpd);
> > + int i;
> >
> > packet = (struct pm4_mes_map_process_aldebaran *)buffer;
> > memset(buffer, 0, sizeof(struct pm4_mes_map_process_aldebaran));
> > @@ -102,6 +106,16 @@ static int pm_map_process_aldebaran(struct
> packet_manager *pm,
> > packet->bitfields14.num_oac = qpd->num_oac;
> > packet->bitfields14.sdma_enable = 1;
> > packet->bitfields14.num_queues = (qpd->is_debug) ? 0 : qpd-
> >queue_count;
> > + packet->spi_gdbg_per_vmid_cntl = pdd->spi_dbg_override |
> > + pdd->spi_dbg_launch_mode;
> > +
> > + if (pdd->process->debug_trap_enabled) {
> > + for (i = 0; i < kfd->device_info.num_of_watch_points; i++)
> > + packet->tcp_watch_cntl[i] = pdd->watch_points[i];
> > +
> > + packet->bitfields2.single_memops =
> > + !!(pdd->process->dbg_flags &
> KFD_DBG_TRAP_FLAG_SINGLE_MEM_OP);
> > + }
> >
> > packet->sh_mem_config = qpd->sh_mem_config;
> > packet->sh_mem_bases = qpd->sh_mem_bases;
> > diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
> b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
> > index 4c912b7735b5..8fca7175daab 100644
> > --- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
> > +++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
> > @@ -816,6 +816,12 @@ struct kfd_process_device {
> > uint64_t faults;
> > uint64_t page_in;
> > uint64_t page_out;
> > +
> > + /* Tracks debug per-vmid request settings */
> > + uint32_t spi_dbg_override;
> > + uint32_t spi_dbg_launch_mode;
> > + uint32_t watch_points[4];
> > +
> > /*
> > * If this process has been checkpointed before, then the user
> > * application will use the original gpu_id on the
> > @@ -952,6 +958,9 @@ struct kfd_process {
> >
> > bool xnack_enabled;
> >
> > + /* Tracks debug per-vmid request for debug flags */
> > + bool dbg_flags;
> > +
> > atomic_t poison;
> > /* Queues are in paused stated because we are in the process of
> doing a CRIU checkpoint */
> > bool queues_paused;
> > diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c
> b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
> > index d63a764dafb9..0281f79fcd7d 100644
> > --- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c
> > +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
> > @@ -1612,6 +1612,11 @@ struct kfd_process_device
> *kfd_create_process_device_data(struct kfd_node *dev,
> > }
> >
> > p->pdds[p->n_pdds++] = pdd;
> > + if (kfd_dbg_is_per_vmid_supported(pdd->dev))
> > + pdd->spi_dbg_override = pdd->dev->kfd2kgd-
> >disable_debug_trap(
> > + pdd->dev->adev,
> > + false,
> > + 0);
> >
> > /* Init idr used for memory handle translation */
> > idr_init(&pdd->alloc_idr);
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