Thanks Alex, I appreciate the explanation!
Kent
From: Deucher, Alexander <Alexander.Deucher@xxxxxxx>
Sent: Wednesday, November 13, 2019 1:31 PM
To: Russell, Kent <Kent.Russell@xxxxxxx>; Zhao, Yong <Yong.Zhao@xxxxxxx>; amd-gfx@xxxxxxxxxxxxxxxxxxxxx
Subject: Re: [PATCH 2/2] drm/amdkfd: Eliminate ops_asic_specific in kernel queue
CI just refers to the dGPUs (bonaire and hawaii), the CIK refers to the whole family (CI dGPUs, Indus (kaveri platform), and Kerala (kabini/mullins platform).
Should we use "CI" instead of "CIK" in the comments? I thought CIK was a short form for CI kickers, while CI encompasses all CI ASICs. Even though we had _cik as the suffix for most of the CI stuff. Just wondering about accuracy.
Kent
-----Original Message-----
From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Yong Zhao
Sent: Tuesday, November 12, 2019 5:19 PM
To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx
Cc: Zhao, Yong <Yong.Zhao@xxxxxxx>
Subject: [PATCH 2/2] drm/amdkfd: Eliminate ops_asic_specific in kernel queue
The ops_asic_specific function pointers are actually quite generic after using a simple if condition. Eliminate it by code refactoring.
Change-Id: Icb891289cca31acdbe2d2eea76a426f1738b9c08
Signed-off-by: Yong Zhao <Yong.Zhao@xxxxxxx>
---
drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c | 63 ++++++++----------- drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.h | 4 -- .../gpu/drm/amd/amdkfd/kfd_kernel_queue_v9.c | 36 ----------- .../gpu/drm/amd/amdkfd/kfd_kernel_queue_vi.c | 48 --------------
4 files changed, 26 insertions(+), 125 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
index a750b1d110eb..59ee9053498c 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
@@ -87,9 +87,17 @@ static bool initialize(struct kernel_queue *kq, struct kfd_dev *dev,
kq->pq_kernel_addr = kq->pq->cpu_ptr;
kq->pq_gpu_addr = kq->pq->gpu_addr;
- retval = kq->ops_asic_specific.initialize(kq, dev, type, queue_size);
- if (!retval)
- goto err_eop_allocate_vidmem;
+ /* For CIK family asics, kq->eop_mem is not needed */
+ if (dev->device_info->asic_family > CHIP_HAWAII) {
+ retval = kfd_gtt_sa_allocate(dev, PAGE_SIZE, &kq->eop_mem);
+ if (retval != 0)
+ goto err_eop_allocate_vidmem;
+
+ kq->eop_gpu_addr = kq->eop_mem->gpu_addr;
+ kq->eop_kernel_addr = kq->eop_mem->cpu_ptr;
+
+ memset(kq->eop_kernel_addr, 0, PAGE_SIZE);
+ }
retval = kfd_gtt_sa_allocate(dev, sizeof(*kq->rptr_kernel),
&kq->rptr_mem);
@@ -200,7 +208,12 @@ static void uninitialize(struct kernel_queue *kq)
kfd_gtt_sa_free(kq->dev, kq->rptr_mem);
kfd_gtt_sa_free(kq->dev, kq->wptr_mem);
- kq->ops_asic_specific.uninitialize(kq);
+
+ /* For CIK family asics, kq->eop_mem is Null, kfd_gtt_sa_free()
+ * is able to handle NULL properly.
+ */
+ kfd_gtt_sa_free(kq->dev, kq->eop_mem);
+
kfd_gtt_sa_free(kq->dev, kq->pq);
kfd_release_kernel_doorbell(kq->dev,
kq->queue->properties.doorbell_ptr);
@@ -280,8 +293,15 @@ static void submit_packet(struct kernel_queue *kq)
}
pr_debug("\n");
#endif
-
- kq->ops_asic_specific.submit_packet(kq);
+ if (kq->dev->device_info->doorbell_size == 8) {
+ *kq->wptr64_kernel = kq->pending_wptr64;
+ write_kernel_doorbell64(kq->queue->properties.doorbell_ptr,
+ kq->pending_wptr64);
+ } else {
+ *kq->wptr_kernel = kq->pending_wptr;
+ write_kernel_doorbell(kq->queue->properties.doorbell_ptr,
+ kq->pending_wptr);
+ }
}
static void rollback_packet(struct kernel_queue *kq) @@ -310,42 +330,11 @@ struct kernel_queue *kernel_queue_init(struct kfd_dev *dev,
kq->ops.submit_packet = submit_packet;
kq->ops.rollback_packet = rollback_packet;
- switch (dev->device_info->asic_family) {
- case CHIP_KAVERI:
- case CHIP_HAWAII:
- case CHIP_CARRIZO:
- case CHIP_TONGA:
- case CHIP_FIJI:
- case CHIP_POLARIS10:
- case CHIP_POLARIS11:
- case CHIP_POLARIS12:
- case CHIP_VEGAM:
- kernel_queue_init_vi(&kq->ops_asic_specific);
- break;
-
- case CHIP_VEGA10:
- case CHIP_VEGA12:
- case CHIP_VEGA20:
- case CHIP_RAVEN:
- case CHIP_RENOIR:
- case CHIP_ARCTURUS:
- case CHIP_NAVI10:
- case CHIP_NAVI12:
- case CHIP_NAVI14:
- kernel_queue_init_v9(&kq->ops_asic_specific);
- break;
- default:
- WARN(1, "Unexpected ASIC family %u",
- dev->device_info->asic_family);
- goto out_free;
- }
-
if (kq->ops.initialize(kq, dev, type, KFD_KERNEL_QUEUE_SIZE))
return kq;
pr_err("Failed to init kernel queue\n");
-out_free:
kfree(kq);
return NULL;
}
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.h b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.h
index a9a35897d8b7..475e9499c0af 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.h
@@ -66,7 +66,6 @@ struct kernel_queue_ops {
struct kernel_queue {
struct kernel_queue_ops ops;
- struct kernel_queue_ops ops_asic_specific;
/* data */
struct kfd_dev *dev;
@@ -99,7 +98,4 @@ struct kernel_queue {
struct list_head list;
};
-void kernel_queue_init_vi(struct kernel_queue_ops *ops); -void kernel_queue_init_v9(struct kernel_queue_ops *ops);
-
#endif /* KFD_KERNEL_QUEUE_H_ */
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue_v9.c b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue_v9.c
index 9e0eaf446bab..2de01009f1b6 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue_v9.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue_v9.c
@@ -27,42 +27,6 @@
#include "kfd_pm4_opcodes.h"
#include "gc/gc_10_1_0_sh_mask.h"
-static bool initialize_v9(struct kernel_queue *kq, struct kfd_dev *dev,
- enum kfd_queue_type type, unsigned int queue_size)
-{
- int retval;
-
- retval = kfd_gtt_sa_allocate(dev, PAGE_SIZE, &kq->eop_mem);
- if (retval)
- return false;
-
- kq->eop_gpu_addr = kq->eop_mem->gpu_addr;
- kq->eop_kernel_addr = kq->eop_mem->cpu_ptr;
-
- memset(kq->eop_kernel_addr, 0, PAGE_SIZE);
-
- return true;
-}
-
-static void uninitialize_v9(struct kernel_queue *kq) -{
- kfd_gtt_sa_free(kq->dev, kq->eop_mem);
-}
-
-static void submit_packet_v9(struct kernel_queue *kq) -{
- *kq->wptr64_kernel = kq->pending_wptr64;
- write_kernel_doorbell64(kq->queue->properties.doorbell_ptr,
- kq->pending_wptr64);
-}
-
-void kernel_queue_init_v9(struct kernel_queue_ops *ops) -{
- ops->initialize = initialize_v9;
- ops->uninitialize = uninitialize_v9;
- ops->submit_packet = submit_packet_v9;
-}
-
static int pm_map_process_v9(struct packet_manager *pm,
uint32_t *buffer, struct qcm_process_device *qpd) { diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue_vi.c b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue_vi.c
index 64f13f34d819..bed4d0ccb6b1 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue_vi.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue_vi.c
@@ -26,54 +26,6 @@
#include "kfd_pm4_headers_vi.h"
#include "kfd_pm4_opcodes.h"
-static bool initialize_vi(struct kernel_queue *kq, struct kfd_dev *dev,
- enum kfd_queue_type type, unsigned int queue_size);
-static void uninitialize_vi(struct kernel_queue *kq); -static void submit_packet_vi(struct kernel_queue *kq);
-
-void kernel_queue_init_vi(struct kernel_queue_ops *ops) -{
- ops->initialize = initialize_vi;
- ops->uninitialize = uninitialize_vi;
- ops->submit_packet = submit_packet_vi;
-}
-
-static bool initialize_vi(struct kernel_queue *kq, struct kfd_dev *dev,
- enum kfd_queue_type type, unsigned int queue_size)
-{
- int retval;
-
- /*For CIK family asics, kq->eop_mem is not needed */
- if (dev->device_info->asic_family <= CHIP_HAWAII)
- return true;
-
- retval = kfd_gtt_sa_allocate(dev, PAGE_SIZE, &kq->eop_mem);
- if (retval != 0)
- return false;
-
- kq->eop_gpu_addr = kq->eop_mem->gpu_addr;
- kq->eop_kernel_addr = kq->eop_mem->cpu_ptr;
-
- memset(kq->eop_kernel_addr, 0, PAGE_SIZE);
-
- return true;
-}
-
-static void uninitialize_vi(struct kernel_queue *kq) -{
- /* For CIK family asics, kq->eop_mem is Null, kfd_gtt_sa_free()
- * is able to handle NULL properly.
- */
- kfd_gtt_sa_free(kq->dev, kq->eop_mem);
-}
-
-static void submit_packet_vi(struct kernel_queue *kq) -{
- *kq->wptr_kernel = kq->pending_wptr;
- write_kernel_doorbell(kq->queue->properties.doorbell_ptr,
- kq->pending_wptr);
-}
-
unsigned int pm_build_pm4_header(unsigned int opcode, size_t packet_size) {
union PM4_MES_TYPE_3_HEADER header;
--
2.17.1
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