drm/xe: Decouple xe_exec_queue and xe_lrc

Decouple xe_lrc from xe_exec_queue and reference count xe_lrc.
Removing hard coupling between xe_exec_queue and xe_lrc allows
flexible design where the user interface xe_exec_queue can be
destroyed independent of the hardware/firmware interface xe_lrc.

v2: Fix lrc indexing in wq_item_append()

Signed-off-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240530032211.29299-1-niranjana.vishwanathapura@intel.com

diff --git a/drivers/gpu/drm/xe/xe_exec_queue.c b/drivers/gpu/drm/xe/xe_exec_queue.c
index a2daae10ccc651bd2a6283f3795f9b59971e6647..27215075c799c4fb1f825e47aa5d63dfbffdbe29 100644 (file)
--- a/drivers/gpu/drm/xe/xe_exec_queue.c
+++ b/drivers/gpu/drm/xe/xe_exec_queue.c
@@ -86,7 +86,7 @@ static struct xe_exec_queue *__xe_exec_queue_alloc(struct xe_device *xe,
 
        if (extensions) {
                /*
-                * may set q->usm, must come before xe_lrc_init(),
+                * may set q->usm, must come before xe_lrc_create(),
                 * may overwrite q->sched_props, must come before q->ops->init()
                 */
                err = exec_queue_user_extensions(xe, q, extensions, 0);
@@ -104,9 +104,11 @@ static int __xe_exec_queue_init(struct xe_exec_queue *q)
        int i, err;
 
        for (i = 0; i < q->width; ++i) {
-               err = xe_lrc_init(q->lrc + i, q->hwe, q, q->vm, SZ_16K);
-               if (err)
+               q->lrc[i] = xe_lrc_create(q->hwe, q->vm, SZ_16K);
+               if (IS_ERR(q->lrc[i])) {
+                       err = PTR_ERR(q->lrc[i]);
                        goto err_lrc;
+               }
        }
 
        err = q->ops->init(q);
@@ -117,7 +119,7 @@ static int __xe_exec_queue_init(struct xe_exec_queue *q)
 
 err_lrc:
        for (i = i - 1; i >= 0; --i)
-               xe_lrc_finish(q->lrc + i);
+               xe_lrc_put(q->lrc[i]);
        return err;
 }
 
@@ -198,7 +200,7 @@ void xe_exec_queue_fini(struct xe_exec_queue *q)
        int i;
 
        for (i = 0; i < q->width; ++i)
-               xe_lrc_finish(q->lrc + i);
+               xe_lrc_put(q->lrc[i]);
        __xe_exec_queue_free(q);
 }
 
@@ -701,7 +703,7 @@ bool xe_exec_queue_is_lr(struct xe_exec_queue *q)
 
 static s32 xe_exec_queue_num_job_inflight(struct xe_exec_queue *q)
 {
-       return q->lrc->fence_ctx.next_seqno - xe_lrc_seqno(q->lrc) - 1;
+       return q->lrc[0]->fence_ctx.next_seqno - xe_lrc_seqno(q->lrc[0]) - 1;
 }
 
 /**
@@ -712,7 +714,7 @@ static s32 xe_exec_queue_num_job_inflight(struct xe_exec_queue *q)
  */
 bool xe_exec_queue_ring_full(struct xe_exec_queue *q)
 {
-       struct xe_lrc *lrc = q->lrc;
+       struct xe_lrc *lrc = q->lrc[0];
        s32 max_job = lrc->ring.size / MAX_JOB_SIZE_BYTES;
 
        return xe_exec_queue_num_job_inflight(q) >= max_job;
@@ -738,16 +740,16 @@ bool xe_exec_queue_is_idle(struct xe_exec_queue *q)
                int i;
 
                for (i = 0; i < q->width; ++i) {
-                       if (xe_lrc_seqno(&q->lrc[i]) !=
-                           q->lrc[i].fence_ctx.next_seqno - 1)
+                       if (xe_lrc_seqno(q->lrc[i]) !=
+                           q->lrc[i]->fence_ctx.next_seqno - 1)
                                return false;
                }
 
                return true;
        }
 
-       return xe_lrc_seqno(&q->lrc[0]) ==
-               q->lrc[0].fence_ctx.next_seqno - 1;
+       return xe_lrc_seqno(q->lrc[0]) ==
+               q->lrc[0]->fence_ctx.next_seqno - 1;
 }
 
 /**
@@ -779,7 +781,7 @@ void xe_exec_queue_update_run_ticks(struct xe_exec_queue *q)
         * the LRCs and reading them in different time could also introduce
         * errors.
         */
-       lrc = &q->lrc[0];
+       lrc = q->lrc[0];
        new_ts = xe_lrc_update_timestamp(lrc, &old_ts);
        q->run_ticks += (new_ts - old_ts) * q->width;
 }

diff --git a/drivers/gpu/drm/xe/xe_exec_queue_types.h b/drivers/gpu/drm/xe/xe_exec_queue_types.h
index e81704c7c030ae88696c4e4c5418d5d02aa79ad2..18d8b2a609286db7ecc89918828a7dc4757a26f4 100644 (file)
--- a/drivers/gpu/drm/xe/xe_exec_queue_types.h
+++ b/drivers/gpu/drm/xe/xe_exec_queue_types.h
@@ -146,7 +146,7 @@ struct xe_exec_queue {
        /** @run_ticks: hw engine class run time in ticks for this exec queue */
        u64 run_ticks;
        /** @lrc: logical ring context for this exec queue */
-       struct xe_lrc lrc[];
+       struct xe_lrc *lrc[];
 };
 
 /**

diff --git a/drivers/gpu/drm/xe/xe_execlist.c b/drivers/gpu/drm/xe/xe_execlist.c
index 8e5c591fcecd88457ffa39f2d6bbc9be3949a69c..db906117db6d69140b733b4224281d2612250f1f 100644 (file)
--- a/drivers/gpu/drm/xe/xe_execlist.c
+++ b/drivers/gpu/drm/xe/xe_execlist.c
@@ -109,7 +109,7 @@ static void __xe_execlist_port_start(struct xe_execlist_port *port,
                        port->last_ctx_id = 1;
        }
 
-       __start_lrc(port->hwe, exl->q->lrc, port->last_ctx_id);
+       __start_lrc(port->hwe, exl->q->lrc[0], port->last_ctx_id);
        port->running_exl = exl;
        exl->has_run = true;
 }
@@ -123,14 +123,14 @@ static void __xe_execlist_port_idle(struct xe_execlist_port *port)
        if (!port->running_exl)
                return;
 
-       xe_lrc_write_ring(&port->hwe->kernel_lrc, noop, sizeof(noop));
-       __start_lrc(port->hwe, &port->hwe->kernel_lrc, 0);
+       xe_lrc_write_ring(port->hwe->kernel_lrc, noop, sizeof(noop));
+       __start_lrc(port->hwe, port->hwe->kernel_lrc, 0);
        port->running_exl = NULL;
 }
 
 static bool xe_execlist_is_idle(struct xe_execlist_exec_queue *exl)
 {
-       struct xe_lrc *lrc = exl->q->lrc;
+       struct xe_lrc *lrc = exl->q->lrc[0];
 
        return lrc->ring.tail == lrc->ring.old_tail;
 }
@@ -333,7 +333,7 @@ static int execlist_exec_queue_init(struct xe_exec_queue *q)
        exl->q = q;
 
        err = drm_sched_init(&exl->sched, &drm_sched_ops, NULL, 1,
-                            q->lrc[0].ring.size / MAX_JOB_SIZE_BYTES,
+                            q->lrc[0]->ring.size / MAX_JOB_SIZE_BYTES,
                             XE_SCHED_HANG_LIMIT, XE_SCHED_JOB_TIMEOUT,
                             NULL, NULL, q->hwe->name,
                             gt_to_xe(q->gt)->drm.dev);

diff --git a/drivers/gpu/drm/xe/xe_gt.c b/drivers/gpu/drm/xe/xe_gt.c
index 34c1896807e9fd192718af901902b9218cdb5c26..9e9da887f4ca36c1fa78194357a58d70f3ae25f8 100644 (file)
--- a/drivers/gpu/drm/xe/xe_gt.c
+++ b/drivers/gpu/drm/xe/xe_gt.c
@@ -297,8 +297,8 @@ int xe_gt_record_default_lrcs(struct xe_gt *gt)
                }
 
                xe_map_memcpy_from(xe, default_lrc,
-                                  &q->lrc[0].bo->vmap,
-                                  xe_lrc_pphwsp_offset(&q->lrc[0]),
+                                  &q->lrc[0]->bo->vmap,
+                                  xe_lrc_pphwsp_offset(q->lrc[0]),
                                   xe_gt_lrc_size(gt, hwe->class));
 
                gt->default_lrc[hwe->class] = default_lrc;

diff --git a/drivers/gpu/drm/xe/xe_guc_submit.c b/drivers/gpu/drm/xe/xe_guc_submit.c
index e22bd6b09a74e9bd0f9c3f50e9924f0c71b8d00f..47aab04cf34fc340ec10abf0cda5083db5f58760 100644 (file)
--- a/drivers/gpu/drm/xe/xe_guc_submit.c
+++ b/drivers/gpu/drm/xe/xe_guc_submit.c
@@ -490,7 +490,7 @@ static void __register_mlrc_exec_queue(struct xe_guc *guc,
        action[len++] = info->hwlrca_hi;
 
        for (i = 1; i < q->width; ++i) {
-               struct xe_lrc *lrc = q->lrc + i;
+               struct xe_lrc *lrc = q->lrc[i];
 
                action[len++] = lower_32_bits(xe_lrc_descriptor(lrc));
                action[len++] = upper_32_bits(xe_lrc_descriptor(lrc));
@@ -527,7 +527,7 @@ static void register_exec_queue(struct xe_exec_queue *q)
 {
        struct xe_guc *guc = exec_queue_to_guc(q);
        struct xe_device *xe = guc_to_xe(guc);
-       struct xe_lrc *lrc = q->lrc;
+       struct xe_lrc *lrc = q->lrc[0];
        struct guc_ctxt_registration_info info;
 
        xe_assert(xe, !exec_queue_registered(q));
@@ -586,7 +586,7 @@ static int wq_wait_for_space(struct xe_exec_queue *q, u32 wqi_size)
 {
        struct xe_guc *guc = exec_queue_to_guc(q);
        struct xe_device *xe = guc_to_xe(guc);
-       struct iosys_map map = xe_lrc_parallel_map(q->lrc);
+       struct iosys_map map = xe_lrc_parallel_map(q->lrc[0]);
        unsigned int sleep_period_ms = 1;
 
 #define AVAILABLE_SPACE \
@@ -614,7 +614,7 @@ static int wq_noop_append(struct xe_exec_queue *q)
 {
        struct xe_guc *guc = exec_queue_to_guc(q);
        struct xe_device *xe = guc_to_xe(guc);
-       struct iosys_map map = xe_lrc_parallel_map(q->lrc);
+       struct iosys_map map = xe_lrc_parallel_map(q->lrc[0]);
        u32 len_dw = wq_space_until_wrap(q) / sizeof(u32) - 1;
 
        if (wq_wait_for_space(q, wq_space_until_wrap(q)))
@@ -634,7 +634,7 @@ static void wq_item_append(struct xe_exec_queue *q)
 {
        struct xe_guc *guc = exec_queue_to_guc(q);
        struct xe_device *xe = guc_to_xe(guc);
-       struct iosys_map map = xe_lrc_parallel_map(q->lrc);
+       struct iosys_map map = xe_lrc_parallel_map(q->lrc[0]);
 #define WQ_HEADER_SIZE 4       /* Includes 1 LRC address too */
        u32 wqi[XE_HW_ENGINE_MAX_INSTANCE + (WQ_HEADER_SIZE - 1)];
        u32 wqi_size = (q->width + (WQ_HEADER_SIZE - 1)) * sizeof(u32);
@@ -650,12 +650,12 @@ static void wq_item_append(struct xe_exec_queue *q)
 
        wqi[i++] = FIELD_PREP(WQ_TYPE_MASK, WQ_TYPE_MULTI_LRC) |
                FIELD_PREP(WQ_LEN_MASK, len_dw);
-       wqi[i++] = xe_lrc_descriptor(q->lrc);
+       wqi[i++] = xe_lrc_descriptor(q->lrc[0]);
        wqi[i++] = FIELD_PREP(WQ_GUC_ID_MASK, q->guc->id) |
-               FIELD_PREP(WQ_RING_TAIL_MASK, q->lrc->ring.tail / sizeof(u64));
+               FIELD_PREP(WQ_RING_TAIL_MASK, q->lrc[0]->ring.tail / sizeof(u64));
        wqi[i++] = 0;
        for (j = 1; j < q->width; ++j) {
-               struct xe_lrc *lrc = q->lrc + j;
+               struct xe_lrc *lrc = q->lrc[j];
 
                wqi[i++] = lrc->ring.tail / sizeof(u64);
        }
@@ -670,7 +670,7 @@ static void wq_item_append(struct xe_exec_queue *q)
 
        xe_device_wmb(xe);
 
-       map = xe_lrc_parallel_map(q->lrc);
+       map = xe_lrc_parallel_map(q->lrc[0]);
        parallel_write(xe, map, wq_desc.tail, q->guc->wqi_tail);
 }
 
@@ -679,7 +679,7 @@ static void submit_exec_queue(struct xe_exec_queue *q)
 {
        struct xe_guc *guc = exec_queue_to_guc(q);
        struct xe_device *xe = guc_to_xe(guc);
-       struct xe_lrc *lrc = q->lrc;
+       struct xe_lrc *lrc = q->lrc[0];
        u32 action[3];
        u32 g2h_len = 0;
        u32 num_g2h = 0;
@@ -1236,7 +1236,7 @@ static int guc_exec_queue_init(struct xe_exec_queue *q)
                  msecs_to_jiffies(q->sched_props.job_timeout_ms);
        err = xe_sched_init(&ge->sched, &drm_sched_ops, &xe_sched_ops,
                            get_submit_wq(guc),
-                           q->lrc[0].ring.size / MAX_JOB_SIZE_BYTES, 64,
+                           q->lrc[0]->ring.size / MAX_JOB_SIZE_BYTES, 64,
                            timeout, guc_to_gt(guc)->ordered_wq, NULL,
                            q->name, gt_to_xe(q->gt)->drm.dev);
        if (err)
@@ -1464,7 +1464,7 @@ static void guc_exec_queue_stop(struct xe_guc *guc, struct xe_exec_queue *q)
                                ban = true;
                        }
                } else if (xe_exec_queue_is_lr(q) &&
-                          (xe_lrc_ring_head(q->lrc) != xe_lrc_ring_tail(q->lrc))) {
+                          (xe_lrc_ring_head(q->lrc[0]) != xe_lrc_ring_tail(q->lrc[0]))) {
                        ban = true;
                }
 
@@ -1529,7 +1529,7 @@ static void guc_exec_queue_start(struct xe_exec_queue *q)
 
                trace_xe_exec_queue_resubmit(q);
                for (i = 0; i < q->width; ++i)
-                       xe_lrc_set_ring_head(q->lrc + i, q->lrc[i].ring.tail);
+                       xe_lrc_set_ring_head(q->lrc[i], q->lrc[i]->ring.tail);
                xe_sched_resubmit_jobs(sched);
        }
 
@@ -1775,7 +1775,7 @@ guc_exec_queue_wq_snapshot_capture(struct xe_exec_queue *q,
 {
        struct xe_guc *guc = exec_queue_to_guc(q);
        struct xe_device *xe = guc_to_xe(guc);
-       struct iosys_map map = xe_lrc_parallel_map(q->lrc);
+       struct iosys_map map = xe_lrc_parallel_map(q->lrc[0]);
        int i;
 
        snapshot->guc.wqi_head = q->guc->wqi_head;
@@ -1855,7 +1855,7 @@ xe_guc_exec_queue_snapshot_capture(struct xe_exec_queue *q)
 
        if (snapshot->lrc) {
                for (i = 0; i < q->width; ++i) {
-                       struct xe_lrc *lrc = q->lrc + i;
+                       struct xe_lrc *lrc = q->lrc[i];
 
                        snapshot->lrc[i] = xe_lrc_snapshot_capture(lrc);
                }

diff --git a/drivers/gpu/drm/xe/xe_hw_engine.c b/drivers/gpu/drm/xe/xe_hw_engine.c
index 9eef789be8978dfd2deb92a38459241e8cd3b4d5..0a83506e1ad8cb4916bdb3eeb10a88aeaca1cd5d 100644 (file)
--- a/drivers/gpu/drm/xe/xe_hw_engine.c
+++ b/drivers/gpu/drm/xe/xe_hw_engine.c
@@ -268,7 +268,7 @@ static void hw_engine_fini(struct drm_device *drm, void *arg)
 
        if (hwe->exl_port)
                xe_execlist_port_destroy(hwe->exl_port);
-       xe_lrc_finish(&hwe->kernel_lrc);
+       xe_lrc_put(hwe->kernel_lrc);
 
        hwe->gt = NULL;
 }
@@ -527,9 +527,11 @@ static int hw_engine_init(struct xe_gt *gt, struct xe_hw_engine *hwe,
                goto err_name;
        }
 
-       err = xe_lrc_init(&hwe->kernel_lrc, hwe, NULL, NULL, SZ_16K);
-       if (err)
+       hwe->kernel_lrc = xe_lrc_create(hwe, NULL, SZ_16K);
+       if (IS_ERR(hwe->kernel_lrc)) {
+               err = PTR_ERR(hwe->kernel_lrc);
                goto err_hwsp;
+       }
 
        if (!xe_device_uc_enabled(xe)) {
                hwe->exl_port = xe_execlist_port_create(xe, hwe);
@@ -554,7 +556,7 @@ static int hw_engine_init(struct xe_gt *gt, struct xe_hw_engine *hwe,
        return drmm_add_action_or_reset(&xe->drm, hw_engine_fini, hwe);
 
 err_kernel_lrc:
-       xe_lrc_finish(&hwe->kernel_lrc);
+       xe_lrc_put(hwe->kernel_lrc);
 err_hwsp:
        xe_bo_unpin_map_no_vm(hwe->hwsp);
 err_name:

diff --git a/drivers/gpu/drm/xe/xe_hw_engine_types.h b/drivers/gpu/drm/xe/xe_hw_engine_types.h
index b2f64b92a636298d5b54215d305a83678ba09ba3..580bbd7e83b285a2abd08dd0c8ab5e1570fd89e5 100644 (file)
--- a/drivers/gpu/drm/xe/xe_hw_engine_types.h
+++ b/drivers/gpu/drm/xe/xe_hw_engine_types.h
@@ -137,7 +137,7 @@ struct xe_hw_engine {
        /** @hwsp: hardware status page buffer object */
        struct xe_bo *hwsp;
        /** @kernel_lrc: Kernel LRC (should be replaced /w an xe_engine) */
-       struct xe_lrc kernel_lrc;
+       struct xe_lrc *kernel_lrc;
        /** @exl_port: execlists port */
        struct xe_execlist_port *exl_port;
        /** @fence_irq: fence IRQ to run when a hw engine IRQ is received */

diff --git a/drivers/gpu/drm/xe/xe_lrc.c b/drivers/gpu/drm/xe/xe_lrc.c
index e9196707047829b48e404ffe4c1490284e5a63a5..26922e1bac82f4b54228829b92c5fd03055a10db 100644 (file)
--- a/drivers/gpu/drm/xe/xe_lrc.c
+++ b/drivers/gpu/drm/xe/xe_lrc.c
@@ -808,11 +808,20 @@ static void xe_lrc_set_ppgtt(struct xe_lrc *lrc, struct xe_vm *vm)
        xe_lrc_write_ctx_reg(lrc, CTX_PDP0_LDW, lower_32_bits(desc));
 }
 
+static void xe_lrc_finish(struct xe_lrc *lrc)
+{
+       xe_hw_fence_ctx_finish(&lrc->fence_ctx);
+       xe_bo_lock(lrc->bo, false);
+       xe_bo_unpin(lrc->bo);
+       xe_bo_unlock(lrc->bo);
+       xe_bo_put(lrc->bo);
+}
+
 #define PVC_CTX_ASID           (0x2e + 1)
 #define PVC_CTX_ACC_CTR_THOLD  (0x2a + 1)
 
-int xe_lrc_init(struct xe_lrc *lrc, struct xe_hw_engine *hwe,
-               struct xe_exec_queue *q, struct xe_vm *vm, u32 ring_size)
+static int xe_lrc_init(struct xe_lrc *lrc, struct xe_hw_engine *hwe,
+                      struct xe_vm *vm, u32 ring_size)
 {
        struct xe_gt *gt = hwe->gt;
        struct xe_tile *tile = gt_to_tile(gt);
@@ -823,6 +832,7 @@ int xe_lrc_init(struct xe_lrc *lrc, struct xe_hw_engine *hwe,
        u32 lrc_size;
        int err;
 
+       kref_init(&lrc->refcount);
        lrc->flags = 0;
        lrc_size = ring_size + xe_gt_lrc_size(gt, hwe->class);
        if (xe_gt_has_indirect_ring_state(gt))
@@ -935,13 +945,31 @@ err_lrc_finish:
        return err;
 }
 
-void xe_lrc_finish(struct xe_lrc *lrc)
+struct xe_lrc *xe_lrc_create(struct xe_hw_engine *hwe, struct xe_vm *vm,
+                            u32 ring_size)
 {
-       xe_hw_fence_ctx_finish(&lrc->fence_ctx);
-       xe_bo_lock(lrc->bo, false);
-       xe_bo_unpin(lrc->bo);
-       xe_bo_unlock(lrc->bo);
-       xe_bo_put(lrc->bo);
+       struct xe_lrc *lrc;
+       int err;
+
+       lrc = kzalloc(sizeof(*lrc), GFP_KERNEL);
+       if (!lrc)
+               return ERR_PTR(-ENOMEM);
+
+       err = xe_lrc_init(lrc, hwe, vm, ring_size);
+       if (err) {
+               kfree(lrc);
+               return ERR_PTR(err);
+       }
+
+       return lrc;
+}
+
+void xe_lrc_destroy(struct kref *ref)
+{
+       struct xe_lrc *lrc = container_of(ref, struct xe_lrc, refcount);
+
+       xe_lrc_finish(lrc);
+       kfree(lrc);
 }
 
 void xe_lrc_set_ring_tail(struct xe_lrc *lrc, u32 tail)

diff --git a/drivers/gpu/drm/xe/xe_lrc.h b/drivers/gpu/drm/xe/xe_lrc.h
index c2df6bfd1889954be0bea005d9df4ed96ba9f113..ebe0e362e43425f928a7f5a68ecc6138397271ca 100644 (file)
--- a/drivers/gpu/drm/xe/xe_lrc.h
+++ b/drivers/gpu/drm/xe/xe_lrc.h
@@ -7,6 +7,8 @@
 
 #include <linux/types.h>
 
+#include "xe_lrc_types.h"
+
 struct drm_printer;
 struct xe_bb;
 struct xe_device;
@@ -20,9 +22,20 @@ struct xe_vm;
 
 #define LRC_PPHWSP_SCRATCH_ADDR (0x34 * 4)
 
-int xe_lrc_init(struct xe_lrc *lrc, struct xe_hw_engine *hwe,
-               struct xe_exec_queue *q, struct xe_vm *vm, u32 ring_size);
-void xe_lrc_finish(struct xe_lrc *lrc);
+struct xe_lrc *xe_lrc_create(struct xe_hw_engine *hwe, struct xe_vm *vm,
+                            u32 ring_size);
+void xe_lrc_destroy(struct kref *ref);
+
+static inline struct xe_lrc *xe_lrc_get(struct xe_lrc *lrc)
+{
+       kref_get(&lrc->refcount);
+       return lrc;
+}
+
+static inline void xe_lrc_put(struct xe_lrc *lrc)
+{
+       kref_put(&lrc->refcount, xe_lrc_destroy);
+}
 
 size_t xe_gt_lrc_size(struct xe_gt *gt, enum xe_engine_class class);
 u32 xe_lrc_pphwsp_offset(struct xe_lrc *lrc);

diff --git a/drivers/gpu/drm/xe/xe_lrc_types.h b/drivers/gpu/drm/xe/xe_lrc_types.h
index 0fa055da6b27b8fdee2431b54c3ca84963948e6b..71ecb453f811a42a7347dfe6d08e92da0e4658a2 100644 (file)
--- a/drivers/gpu/drm/xe/xe_lrc_types.h
+++ b/drivers/gpu/drm/xe/xe_lrc_types.h
@@ -6,6 +6,8 @@
 #ifndef _XE_LRC_TYPES_H_
 #define _XE_LRC_TYPES_H_
 
+#include <linux/kref.h>
+
 #include "xe_hw_fence_types.h"
 
 struct xe_bo;
@@ -30,6 +32,9 @@ struct xe_lrc {
 #define XE_LRC_FLAG_INDIRECT_RING_STATE                0x1
        u32 flags;
 
+       /** @refcount: ref count of this lrc */
+       struct kref refcount;
+
        /** @ring: submission ring state */
        struct {
                /** @ring.size: size of submission ring */

diff --git a/drivers/gpu/drm/xe/xe_ring_ops.c b/drivers/gpu/drm/xe/xe_ring_ops.c
index 550c3eafbc1da9e7859f4b9f97239c1aab5eee63..2a607c141d659f37d2ec62068180d53ce85091a0 100644 (file)
--- a/drivers/gpu/drm/xe/xe_ring_ops.c
+++ b/drivers/gpu/drm/xe/xe_ring_ops.c
@@ -396,7 +396,7 @@ static void emit_job_gen12_gsc(struct xe_sched_job *job)
 
        xe_gt_assert(gt, job->q->width <= 1); /* no parallel submission for GSCCS */
 
-       __emit_job_gen12_simple(job, job->q->lrc,
+       __emit_job_gen12_simple(job, job->q->lrc[0],
                                job->ptrs[0].batch_addr,
                                xe_sched_job_lrc_seqno(job));
 }
@@ -406,13 +406,13 @@ static void emit_job_gen12_copy(struct xe_sched_job *job)
        int i;
 
        if (xe_sched_job_is_migration(job->q)) {
-               emit_migration_job_gen12(job, job->q->lrc,
+               emit_migration_job_gen12(job, job->q->lrc[0],
                                         xe_sched_job_lrc_seqno(job));
                return;
        }
 
        for (i = 0; i < job->q->width; ++i)
-               __emit_job_gen12_simple(job, job->q->lrc + i,
+               __emit_job_gen12_simple(job, job->q->lrc[i],
                                        job->ptrs[i].batch_addr,
                                        xe_sched_job_lrc_seqno(job));
 }
@@ -423,7 +423,7 @@ static void emit_job_gen12_video(struct xe_sched_job *job)
 
        /* FIXME: Not doing parallel handshake for now */
        for (i = 0; i < job->q->width; ++i)
-               __emit_job_gen12_video(job, job->q->lrc + i,
+               __emit_job_gen12_video(job, job->q->lrc[i],
                                       job->ptrs[i].batch_addr,
                                       xe_sched_job_lrc_seqno(job));
 }
@@ -433,7 +433,7 @@ static void emit_job_gen12_render_compute(struct xe_sched_job *job)
        int i;
 
        for (i = 0; i < job->q->width; ++i)
-               __emit_job_gen12_render_compute(job, job->q->lrc + i,
+               __emit_job_gen12_render_compute(job, job->q->lrc[i],
                                                job->ptrs[i].batch_addr,
                                                xe_sched_job_lrc_seqno(job));
 }

diff --git a/drivers/gpu/drm/xe/xe_sched_job.c b/drivers/gpu/drm/xe/xe_sched_job.c
index 29f3201d7dfacef22fc4e72ac243dc7ddc71b52c..5c013904877a6bb21bf9b02be4ea8d06e3e1acf4 100644 (file)
--- a/drivers/gpu/drm/xe/xe_sched_job.c
+++ b/drivers/gpu/drm/xe/xe_sched_job.c
@@ -216,7 +216,7 @@ void xe_sched_job_set_error(struct xe_sched_job *job, int error)
 
 bool xe_sched_job_started(struct xe_sched_job *job)
 {
-       struct xe_lrc *lrc = job->q->lrc;
+       struct xe_lrc *lrc = job->q->lrc[0];
 
        return !__dma_fence_is_later(xe_sched_job_lrc_seqno(job),
                                     xe_lrc_start_seqno(lrc),
@@ -225,7 +225,7 @@ bool xe_sched_job_started(struct xe_sched_job *job)
 
 bool xe_sched_job_completed(struct xe_sched_job *job)
 {
-       struct xe_lrc *lrc = job->q->lrc;
+       struct xe_lrc *lrc = job->q->lrc[0];
 
        /*
         * Can safely check just LRC[0] seqno as that is last seqno written when
@@ -265,7 +265,7 @@ void xe_sched_job_arm(struct xe_sched_job *job)
                struct dma_fence_chain *chain;
 
                fence = job->ptrs[i].lrc_fence;
-               xe_lrc_init_seqno_fence(&q->lrc[i], fence);
+               xe_lrc_init_seqno_fence(q->lrc[i], fence);
                job->ptrs[i].lrc_fence = NULL;
                if (!i) {
                        job->lrc_seqno = fence->seqno;