[PATCH v2 2/8] drm/etnaviv: share a single cmdbuf suballoc region across all GPUs
Lucas Stach
l.stach at pengutronix.de
Wed Apr 17 13:50:17 UTC 2019
There is no need for each GPU to have it's own cmdbuf suballocation
region. Only allocate a single one for the the etnaviv virtual device
and share it across all GPUs.
Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
---
drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.c | 14 ++++++------
drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.h | 4 ++--
drivers/gpu/drm/etnaviv/etnaviv_drv.c | 11 +++++++++-
drivers/gpu/drm/etnaviv/etnaviv_drv.h | 2 ++
drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c | 2 +-
drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 23 ++++----------------
drivers/gpu/drm/etnaviv/etnaviv_gpu.h | 3 +--
7 files changed, 27 insertions(+), 32 deletions(-)
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.c b/drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.c
index 1bc529399783..a01ae32dcd88 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.c
@@ -10,13 +10,13 @@
#include "etnaviv_gpu.h"
#include "etnaviv_mmu.h"
-#define SUBALLOC_SIZE SZ_256K
+#define SUBALLOC_SIZE SZ_512K
#define SUBALLOC_GRANULE SZ_4K
#define SUBALLOC_GRANULES (SUBALLOC_SIZE / SUBALLOC_GRANULE)
struct etnaviv_cmdbuf_suballoc {
/* suballocated dma buffer properties */
- struct etnaviv_gpu *gpu;
+ struct device *dev;
void *vaddr;
dma_addr_t paddr;
@@ -28,7 +28,7 @@ struct etnaviv_cmdbuf_suballoc {
};
struct etnaviv_cmdbuf_suballoc *
-etnaviv_cmdbuf_suballoc_new(struct etnaviv_gpu * gpu)
+etnaviv_cmdbuf_suballoc_new(struct device *dev)
{
struct etnaviv_cmdbuf_suballoc *suballoc;
int ret;
@@ -37,11 +37,11 @@ etnaviv_cmdbuf_suballoc_new(struct etnaviv_gpu * gpu)
if (!suballoc)
return ERR_PTR(-ENOMEM);
- suballoc->gpu = gpu;
+ suballoc->dev = dev;
mutex_init(&suballoc->lock);
init_waitqueue_head(&suballoc->free_event);
- suballoc->vaddr = dma_alloc_wc(gpu->dev, SUBALLOC_SIZE,
+ suballoc->vaddr = dma_alloc_wc(dev, SUBALLOC_SIZE,
&suballoc->paddr, GFP_KERNEL);
if (!suballoc->vaddr) {
ret = -ENOMEM;
@@ -73,7 +73,7 @@ void etnaviv_cmdbuf_suballoc_unmap(struct etnaviv_iommu *mmu,
void etnaviv_cmdbuf_suballoc_destroy(struct etnaviv_cmdbuf_suballoc *suballoc)
{
- dma_free_wc(suballoc->gpu->dev, SUBALLOC_SIZE, suballoc->vaddr,
+ dma_free_wc(suballoc->dev, SUBALLOC_SIZE, suballoc->vaddr,
suballoc->paddr);
kfree(suballoc);
}
@@ -98,7 +98,7 @@ int etnaviv_cmdbuf_init(struct etnaviv_cmdbuf_suballoc *suballoc,
suballoc->free_space,
msecs_to_jiffies(10 * 1000));
if (!ret) {
- dev_err(suballoc->gpu->dev,
+ dev_err(suballoc->dev,
"Timeout waiting for cmdbuf space\n");
return -ETIMEDOUT;
}
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.h b/drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.h
index 11d95f05c017..7fdc2e3fea5f 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.h
@@ -8,7 +8,7 @@
#include <linux/types.h>
-struct etnaviv_gpu;
+struct device;
struct etnaviv_iommu;
struct etnaviv_vram_mapping;
struct etnaviv_cmdbuf_suballoc;
@@ -24,7 +24,7 @@ struct etnaviv_cmdbuf {
};
struct etnaviv_cmdbuf_suballoc *
-etnaviv_cmdbuf_suballoc_new(struct etnaviv_gpu * gpu);
+etnaviv_cmdbuf_suballoc_new(struct device *dev);
void etnaviv_cmdbuf_suballoc_destroy(struct etnaviv_cmdbuf_suballoc *suballoc);
int etnaviv_cmdbuf_suballoc_map(struct etnaviv_cmdbuf_suballoc *suballoc,
struct etnaviv_iommu *mmu,
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
index 3156450723ba..138025bc5376 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
@@ -30,7 +30,7 @@ static void load_gpu(struct drm_device *dev)
if (g) {
int ret;
- ret = etnaviv_gpu_init(g);
+ ret = etnaviv_gpu_init(priv, g);
if (ret)
priv->gpu[i] = NULL;
}
@@ -522,6 +522,13 @@ static int etnaviv_bind(struct device *dev)
INIT_LIST_HEAD(&priv->gem_list);
priv->num_gpus = 0;
+ priv->cmdbuf_suballoc = etnaviv_cmdbuf_suballoc_new(drm->dev);
+ if (IS_ERR(priv->cmdbuf_suballoc)) {
+ dev_err(drm->dev, "Failed to create cmdbuf suballocator\n");
+ ret = PTR_ERR(priv->cmdbuf_suballoc);
+ goto out_put;
+ }
+
dev_set_drvdata(dev, drm);
ret = component_bind_all(dev, drm);
@@ -555,6 +562,8 @@ static void etnaviv_unbind(struct device *dev)
component_unbind_all(dev, drm);
+ etnaviv_cmdbuf_suballoc_destroy(priv->cmdbuf_suballoc);
+
dev->dma_parms = NULL;
drm->dev_private = NULL;
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.h b/drivers/gpu/drm/etnaviv/etnaviv_drv.h
index 6a4ea127c4f1..0291771e72fa 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_drv.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.h
@@ -45,6 +45,8 @@ struct etnaviv_drm_private {
struct device_dma_parameters dma_parms;
struct etnaviv_gpu *gpu[ETNA_MAX_PIPES];
+ struct etnaviv_cmdbuf_suballoc *cmdbuf_suballoc;
+
/* list of GEM objects: */
struct mutex gem_lock;
struct list_head gem_list;
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
index b2fe3446bfbc..f5b3dfa312b7 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
@@ -501,7 +501,7 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
goto err_submit_ww_acquire;
}
- ret = etnaviv_cmdbuf_init(gpu->cmdbuf_suballoc, &submit->cmdbuf,
+ ret = etnaviv_cmdbuf_init(priv->cmdbuf_suballoc, &submit->cmdbuf,
ALIGN(args->stream_size, 8) + 8);
if (ret)
goto err_submit_objects;
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
index a70ff4c77a8a..a5eed14cec8d 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
@@ -687,7 +687,7 @@ static void etnaviv_gpu_hw_init(struct etnaviv_gpu *gpu)
&gpu->cmdbuf_mapping), prefetch);
}
-int etnaviv_gpu_init(struct etnaviv_gpu *gpu)
+int etnaviv_gpu_init(struct etnaviv_drm_private *priv, struct etnaviv_gpu *gpu)
{
int ret, i;
@@ -756,23 +756,16 @@ int etnaviv_gpu_init(struct etnaviv_gpu *gpu)
goto fail;
}
- gpu->cmdbuf_suballoc = etnaviv_cmdbuf_suballoc_new(gpu);
- if (IS_ERR(gpu->cmdbuf_suballoc)) {
- dev_err(gpu->dev, "Failed to create cmdbuf suballocator\n");
- ret = PTR_ERR(gpu->cmdbuf_suballoc);
- goto destroy_iommu;
- }
-
- ret = etnaviv_cmdbuf_suballoc_map(gpu->cmdbuf_suballoc, gpu->mmu,
+ ret = etnaviv_cmdbuf_suballoc_map(priv->cmdbuf_suballoc, gpu->mmu,
&gpu->cmdbuf_mapping,
gpu->memory_base);
if (ret) {
dev_err(gpu->dev, "failed to map cmdbuf suballoc\n");
- goto destroy_suballoc;
+ goto destroy_iommu;
}
/* Create buffer: */
- ret = etnaviv_cmdbuf_init(gpu->cmdbuf_suballoc, &gpu->buffer,
+ ret = etnaviv_cmdbuf_init(priv->cmdbuf_suballoc, &gpu->buffer,
PAGE_SIZE);
if (ret) {
dev_err(gpu->dev, "could not create command buffer\n");
@@ -810,9 +803,6 @@ int etnaviv_gpu_init(struct etnaviv_gpu *gpu)
gpu->buffer.suballoc = NULL;
unmap_suballoc:
etnaviv_cmdbuf_suballoc_unmap(gpu->mmu, &gpu->cmdbuf_mapping);
-destroy_suballoc:
- etnaviv_cmdbuf_suballoc_destroy(gpu->cmdbuf_suballoc);
- gpu->cmdbuf_suballoc = NULL;
destroy_iommu:
etnaviv_iommu_destroy(gpu->mmu);
gpu->mmu = NULL;
@@ -1692,11 +1682,6 @@ static void etnaviv_gpu_unbind(struct device *dev, struct device *master,
if (gpu->cmdbuf_mapping.use == 1)
etnaviv_cmdbuf_suballoc_unmap(gpu->mmu, &gpu->cmdbuf_mapping);
- if (gpu->cmdbuf_suballoc) {
- etnaviv_cmdbuf_suballoc_destroy(gpu->cmdbuf_suballoc);
- gpu->cmdbuf_suballoc = NULL;
- }
-
if (gpu->mmu) {
etnaviv_iommu_destroy(gpu->mmu);
gpu->mmu = NULL;
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
index 8c68869ba180..004f2cdfb4e0 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
@@ -136,7 +136,6 @@ struct etnaviv_gpu {
int irq;
struct etnaviv_iommu *mmu;
- struct etnaviv_cmdbuf_suballoc *cmdbuf_suballoc;
/* Power Control: */
struct clk *clk_bus;
@@ -161,7 +160,7 @@ static inline u32 gpu_read(struct etnaviv_gpu *gpu, u32 reg)
int etnaviv_gpu_get_param(struct etnaviv_gpu *gpu, u32 param, u64 *value);
-int etnaviv_gpu_init(struct etnaviv_gpu *gpu);
+int etnaviv_gpu_init(struct etnaviv_drm_private *priv, struct etnaviv_gpu *gpu);
bool etnaviv_fill_identity_from_hwdb(struct etnaviv_gpu *gpu);
#ifdef CONFIG_DEBUG_FS
--
2.20.1
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