drm/msm: Move memptrs to msm_gpu

When we move to multiple ringbuffers we're going to store the data
in the memptrs on a per-ring basis. In order to prepare for that
move the current memptrs from the adreno namespace into msm_gpu.
This is way cleaner and immediately lets us kill off some sub
functions so there is much less cost later when we do move to
per-ring structs.

Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>

drivers/gpu/drm/msm/adreno/a3xx_gpu.c

@@ -444,7 +444,6 @@ static const struct adreno_gpu_funcs funcs = {
 		.pm_suspend = msm_gpu_pm_suspend,
 		.pm_resume = msm_gpu_pm_resume,
 		.recover = a3xx_recover,
-		.last_fence = adreno_last_fence,
 		.submit = adreno_submit,
 		.flush = adreno_flush,
 		.irq = a3xx_irq,

drivers/gpu/drm/msm/adreno/a4xx_gpu.c

@@ -532,7 +532,6 @@ static const struct adreno_gpu_funcs funcs = {
 		.pm_suspend = a4xx_pm_suspend,
 		.pm_resume = a4xx_pm_resume,
 		.recover = a4xx_recover,
-		.last_fence = adreno_last_fence,
 		.submit = adreno_submit,
 		.flush = adreno_flush,
 		.irq = a4xx_irq,

drivers/gpu/drm/msm/adreno/a5xx_gpu.c

@@ -116,7 +116,6 @@ static int zap_shader_load_mdt(struct msm_gpu *gpu, const char *fwname)
 static void a5xx_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit,
 	struct msm_file_private *ctx)
 {
-	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
 	struct msm_drm_private *priv = gpu->dev->dev_private;
 	struct msm_ringbuffer *ring = gpu->rb;
 	unsigned int i, ibs = 0;
@@ -143,8 +142,8 @@ static void a5xx_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit,
 
 	OUT_PKT7(ring, CP_EVENT_WRITE, 4);
 	OUT_RING(ring, CACHE_FLUSH_TS | (1 << 31));
-	OUT_RING(ring, lower_32_bits(rbmemptr(adreno_gpu, fence)));
-	OUT_RING(ring, upper_32_bits(rbmemptr(adreno_gpu, fence)));
+	OUT_RING(ring, lower_32_bits(rbmemptr(gpu, fence)));
+	OUT_RING(ring, upper_32_bits(rbmemptr(gpu, fence)));
 	OUT_RING(ring, submit->fence->seqno);
 
 	gpu->funcs->flush(gpu);
@@ -821,7 +820,7 @@ static void a5xx_fault_detect_irq(struct msm_gpu *gpu)
 	struct msm_drm_private *priv = dev->dev_private;
 
 	dev_err(dev->dev, "gpu fault fence %x status %8.8X rb %4.4x/%4.4x ib1 %16.16llX/%4.4x ib2 %16.16llX/%4.4x\n",
-		gpu->funcs->last_fence(gpu),
+		gpu->memptrs->fence,
 		gpu_read(gpu, REG_A5XX_RBBM_STATUS),
 		gpu_read(gpu, REG_A5XX_CP_RB_RPTR),
 		gpu_read(gpu, REG_A5XX_CP_RB_WPTR),
@@ -1009,7 +1008,6 @@ static const struct adreno_gpu_funcs funcs = {
 		.pm_suspend = a5xx_pm_suspend,
 		.pm_resume = a5xx_pm_resume,
 		.recover = a5xx_recover,
-		.last_fence = adreno_last_fence,
 		.submit = a5xx_submit,
 		.flush = adreno_flush,
 		.irq = a5xx_irq,

drivers/gpu/drm/msm/adreno/adreno_gpu.c

@@ -182,8 +182,8 @@ int adreno_hw_init(struct msm_gpu *gpu)
 	gpu->rb->cur = gpu->rb->start;
 
 	/* reset completed fence seqno: */
-	adreno_gpu->memptrs->fence = gpu->fctx->completed_fence;
-	adreno_gpu->memptrs->rptr  = 0;
+	gpu->memptrs->fence = gpu->fctx->completed_fence;
+	gpu->memptrs->rptr  = 0;
 
 	/* Setup REG_CP_RB_CNTL: */
 	adreno_gpu_write(adreno_gpu, REG_ADRENO_CP_RB_CNTL,
@@ -198,8 +198,7 @@ int adreno_hw_init(struct msm_gpu *gpu)
 
 	if (!adreno_is_a430(adreno_gpu)) {
 		adreno_gpu_write64(adreno_gpu, REG_ADRENO_CP_RB_RPTR_ADDR,
-			REG_ADRENO_CP_RB_RPTR_ADDR_HI,
-			rbmemptr(adreno_gpu, rptr));
+			REG_ADRENO_CP_RB_RPTR_ADDR_HI, rbmemptr(gpu, rptr));
 	}
 
 	return 0;
@@ -213,17 +212,13 @@ static uint32_t get_wptr(struct msm_ringbuffer *ring)
 /* Use this helper to read rptr, since a430 doesn't update rptr in memory */
 static uint32_t get_rptr(struct adreno_gpu *adreno_gpu)
 {
+	struct msm_gpu *gpu = &adreno_gpu->base;
+
 	if (adreno_is_a430(adreno_gpu))
-		return adreno_gpu->memptrs->rptr = adreno_gpu_read(
+		return gpu->memptrs->rptr = adreno_gpu_read(
 			adreno_gpu, REG_ADRENO_CP_RB_RPTR);
 	else
-		return adreno_gpu->memptrs->rptr;
-}
-
-uint32_t adreno_last_fence(struct msm_gpu *gpu)
-{
-	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
-	return adreno_gpu->memptrs->fence;
+		return gpu->memptrs->rptr;
 }
 
 void adreno_recover(struct msm_gpu *gpu)
@@ -288,7 +283,7 @@ void adreno_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit,
 
 	OUT_PKT3(ring, CP_EVENT_WRITE, 3);
 	OUT_RING(ring, CACHE_FLUSH_TS);
-	OUT_RING(ring, rbmemptr(adreno_gpu, fence));
+	OUT_RING(ring, rbmemptr(gpu, fence));
 	OUT_RING(ring, submit->fence->seqno);
 
 	/* we could maybe be clever and only CP_COND_EXEC the interrupt: */
@@ -361,7 +356,7 @@ void adreno_show(struct msm_gpu *gpu, struct seq_file *m)
 			adreno_gpu->rev.major, adreno_gpu->rev.minor,
 			adreno_gpu->rev.patchid);
 
-	seq_printf(m, "fence:    %d/%d\n", adreno_gpu->memptrs->fence,
+	seq_printf(m, "fence:    %d/%d\n", gpu->memptrs->fence,
 			gpu->fctx->last_fence);
 	seq_printf(m, "rptr:     %d\n", get_rptr(adreno_gpu));
 	seq_printf(m, "rb wptr:  %d\n", get_wptr(gpu->rb));
@@ -396,7 +391,7 @@ void adreno_dump_info(struct msm_gpu *gpu)
 			adreno_gpu->rev.major, adreno_gpu->rev.minor,
 			adreno_gpu->rev.patchid);
 
-	printk("fence:    %d/%d\n", adreno_gpu->memptrs->fence,
+	printk("fence:    %d/%d\n", gpu->memptrs->fence,
 			gpu->fctx->last_fence);
 	printk("rptr:     %d\n", get_rptr(adreno_gpu));
 	printk("rb wptr:  %d\n", get_wptr(gpu->rb));
@@ -443,7 +438,6 @@ int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev,
 	struct adreno_platform_config *config = pdev->dev.platform_data;
 	struct msm_gpu_config adreno_gpu_config  = { 0 };
 	struct msm_gpu *gpu = &adreno_gpu->base;
-	int ret;
 
 	adreno_gpu->funcs = funcs;
 	adreno_gpu->info = adreno_info(config->rev);
@@ -472,39 +466,14 @@ int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev,
 	pm_runtime_use_autosuspend(&pdev->dev);
 	pm_runtime_enable(&pdev->dev);
 
-	ret = msm_gpu_init(drm, pdev, &adreno_gpu->base, &funcs->base,
+	return msm_gpu_init(drm, pdev, &adreno_gpu->base, &funcs->base,
 			adreno_gpu->info->name, &adreno_gpu_config);
-	if (ret)
-		return ret;
-
-	adreno_gpu->memptrs = msm_gem_kernel_new(drm,
-		sizeof(*adreno_gpu->memptrs), MSM_BO_UNCACHED, gpu->aspace,
-		&adreno_gpu->memptrs_bo, &adreno_gpu->memptrs_iova);
-
-	if (IS_ERR(adreno_gpu->memptrs)) {
-		ret = PTR_ERR(adreno_gpu->memptrs);
-		adreno_gpu->memptrs = NULL;
-		dev_err(drm->dev, "could not allocate memptrs: %d\n", ret);
-	}
-
-	return ret;
 }
 
 void adreno_gpu_cleanup(struct adreno_gpu *adreno_gpu)
 {
-	struct msm_gpu *gpu = &adreno_gpu->base;
-
-	if (adreno_gpu->memptrs_bo) {
-		if (adreno_gpu->memptrs)
-			msm_gem_put_vaddr(adreno_gpu->memptrs_bo);
-
-		if (adreno_gpu->memptrs_iova)
-			msm_gem_put_iova(adreno_gpu->memptrs_bo, gpu->aspace);
-
-		drm_gem_object_unreference_unlocked(adreno_gpu->memptrs_bo);
-	}
 	release_firmware(adreno_gpu->pm4);
 	release_firmware(adreno_gpu->pfp);
 
-	msm_gpu_cleanup(gpu);
+	msm_gpu_cleanup(&adreno_gpu->base);
 }

drivers/gpu/drm/msm/adreno/adreno_gpu.h

@@ -82,14 +82,6 @@ struct adreno_info {
 
 const struct adreno_info *adreno_info(struct adreno_rev rev);
 
-#define rbmemptr(adreno_gpu, member)  \
-	((adreno_gpu)->memptrs_iova + offsetof(struct adreno_rbmemptrs, member))
-
-struct adreno_rbmemptrs {
-	volatile uint32_t rptr;
-	volatile uint32_t fence;
-};
-
 struct adreno_gpu {
 	struct msm_gpu base;
 	struct adreno_rev rev;
@@ -125,13 +117,6 @@ struct adreno_gpu {
 	/* firmware: */
 	const struct firmware *pm4, *pfp;
 
-	/* ringbuffer rptr/wptr: */
-	// TODO should this be in msm_ringbuffer?  I think it would be
-	// different for z180..
-	struct adreno_rbmemptrs *memptrs;
-	struct drm_gem_object *memptrs_bo;
-	uint64_t memptrs_iova;
-
 	/*
 	 * Register offsets are different between some GPUs.
 	 * GPU specific offsets will be exported by GPU specific
@@ -220,7 +205,6 @@ int adreno_get_param(struct msm_gpu *gpu, uint32_t param, uint64_t *value);
 const struct firmware *adreno_request_fw(struct adreno_gpu *adreno_gpu,
 		const char *fwname);
 int adreno_hw_init(struct msm_gpu *gpu);
-uint32_t adreno_last_fence(struct msm_gpu *gpu);
 void adreno_recover(struct msm_gpu *gpu);
 void adreno_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit,
 		struct msm_file_private *ctx);

drivers/gpu/drm/msm/msm_gpu.c

@@ -228,7 +228,7 @@ static void recover_worker(struct work_struct *work)
 	struct msm_gpu *gpu = container_of(work, struct msm_gpu, recover_work);
 	struct drm_device *dev = gpu->dev;
 	struct msm_gem_submit *submit;
-	uint32_t fence = gpu->funcs->last_fence(gpu);
+	uint32_t fence = gpu->memptrs->fence;
 
 	msm_update_fence(gpu->fctx, fence + 1);
 
@@ -281,7 +281,7 @@ static void hangcheck_handler(unsigned long data)
 	struct msm_gpu *gpu = (struct msm_gpu *)data;
 	struct drm_device *dev = gpu->dev;
 	struct msm_drm_private *priv = dev->dev_private;
-	uint32_t fence = gpu->funcs->last_fence(gpu);
+	uint32_t fence = gpu->memptrs->fence;
 
 	if (fence != gpu->hangcheck_fence) {
 		/* some progress has been made.. ya! */
@@ -449,7 +449,7 @@ static void retire_worker(struct work_struct *work)
 {
 	struct msm_gpu *gpu = container_of(work, struct msm_gpu, retire_work);
 	struct drm_device *dev = gpu->dev;
-	uint32_t fence = gpu->funcs->last_fence(gpu);
+	uint32_t fence = gpu->memptrs->fence;
 
 	msm_update_fence(gpu->fctx, fence);
 
@@ -689,6 +689,17 @@ int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev,
 		goto fail;
 	}
 
+	gpu->memptrs = msm_gem_kernel_new(drm, sizeof(*gpu->memptrs_bo),
+		MSM_BO_UNCACHED, gpu->aspace, &gpu->memptrs_bo,
+		&gpu->memptrs_iova);
+
+	if (IS_ERR(gpu->memptrs)) {
+		ret = PTR_ERR(gpu->memptrs);
+		gpu->memptrs = NULL;
+		dev_err(drm->dev, "could not allocate memptrs: %d\n", ret);
+		goto fail;
+	}
+
 	/* Create ringbuffer: */
 	gpu->rb = msm_ringbuffer_new(gpu, config->ringsz);
 	if (IS_ERR(gpu->rb)) {
@@ -701,6 +712,12 @@ int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev,
 	return 0;
 
 fail:
+	if (gpu->memptrs_bo) {
+		msm_gem_put_vaddr(gpu->memptrs_bo);
+		msm_gem_put_iova(gpu->memptrs_bo, gpu->aspace);
+		drm_gem_object_unreference_unlocked(gpu->memptrs_bo);
+	}
+
 	platform_set_drvdata(pdev, NULL);
 	return ret;
 }
@@ -718,7 +735,14 @@ void msm_gpu_cleanup(struct msm_gpu *gpu)
 			msm_gem_put_iova(gpu->rb->bo, gpu->aspace);
 		msm_ringbuffer_destroy(gpu->rb);
 	}
-	if (gpu->aspace) {
+
+	if (gpu->memptrs_bo) {
+		msm_gem_put_vaddr(gpu->memptrs_bo);
+		msm_gem_put_iova(gpu->memptrs_bo, gpu->aspace);
+		drm_gem_object_unreference_unlocked(gpu->memptrs_bo);
+	}
+
+	if (!IS_ERR_OR_NULL(gpu->aspace)) {
 		gpu->aspace->mmu->funcs->detach(gpu->aspace->mmu,
 			NULL, 0);
 		msm_gem_address_space_put(gpu->aspace);

drivers/gpu/drm/msm/msm_gpu.h

@@ -59,7 +59,6 @@ struct msm_gpu_funcs {
 			struct msm_file_private *ctx);
 	void (*flush)(struct msm_gpu *gpu);
 	irqreturn_t (*irq)(struct msm_gpu *irq);
-	uint32_t (*last_fence)(struct msm_gpu *gpu);
 	void (*recover)(struct msm_gpu *gpu);
 	void (*destroy)(struct msm_gpu *gpu);
 #ifdef CONFIG_DEBUG_FS
@@ -68,6 +67,14 @@ struct msm_gpu_funcs {
 #endif
 };
 
+#define rbmemptr(gpu, member)  \
+	((gpu)->memptrs_iova + offsetof(struct msm_rbmemptrs, member))
+
+struct msm_rbmemptrs {
+	volatile uint32_t rptr;
+	volatile uint32_t fence;
+};
+
 struct msm_gpu {
 	const char *name;
 	struct drm_device *dev;
@@ -130,11 +137,17 @@ struct msm_gpu {
 	struct work_struct recover_work;
 
 	struct list_head submit_list;
+
+	struct msm_rbmemptrs *memptrs;
+	struct drm_gem_object *memptrs_bo;
+	uint64_t memptrs_iova;
+
+
 };
 
 static inline bool msm_gpu_active(struct msm_gpu *gpu)
 {
-	return gpu->fctx->last_fence > gpu->funcs->last_fence(gpu);
+	return gpu->fctx->last_fence > gpu->memptrs->fence;
 }
 
 /* Perf-Counters: