[PATCH v2 6/6] drm/msm/gpu: add ocmem init/cleanup functions

From: Brian Masney
Date: Tue Jun 18 2019 - 22:37:27 EST

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The files a3xx_gpu.c and a4xx_gpu.c have ifdefs for the OCMEM support
that was missing upstream. Add two new functions (adreno_gpu_ocmem_init
and adreno_gpu_ocmem_cleanup) that removes some duplicated code. We also
need to change the ifdef check for CONFIG_MSM_OCMEM to CONFIG_QCOM_OCMEM
now that OCMEM support is upstream.

Signed-off-by: Brian Masney <masneyb@xxxxxxxxxxxxx>
---
Changes since v1:
- remove CONFIG_QCOM_OCMEM #ifdefs
- use unsigned long for memory addresses instead of uint32_t
- add 'depends on QCOM_OCMEM || QCOM_OCMEM=n' to Kconfig

drivers/gpu/drm/msm/Kconfig | 1 +
drivers/gpu/drm/msm/adreno/a3xx_gpu.c | 33 ++++++++---------------
drivers/gpu/drm/msm/adreno/a3xx_gpu.h | 3 +--
drivers/gpu/drm/msm/adreno/a4xx_gpu.c | 30 +++++++--------------
drivers/gpu/drm/msm/adreno/a4xx_gpu.h | 3 +--
drivers/gpu/drm/msm/adreno/adreno_gpu.c | 36 +++++++++++++++++++++++++
drivers/gpu/drm/msm/adreno/adreno_gpu.h | 10 +++++++
7 files changed, 70 insertions(+), 46 deletions(-)

diff --git a/drivers/gpu/drm/msm/Kconfig b/drivers/gpu/drm/msm/Kconfig
index 9c37e4de5896..b3d3b2172659 100644
--- a/drivers/gpu/drm/msm/Kconfig
+++ b/drivers/gpu/drm/msm/Kconfig
@@ -7,6 +7,7 @@ config DRM_MSM
depends on OF && COMMON_CLK
depends on MMU
depends on INTERCONNECT || !INTERCONNECT
+ depends on QCOM_OCMEM || QCOM_OCMEM=n
select QCOM_MDT_LOADER if ARCH_QCOM
select REGULATOR
select DRM_KMS_HELPER
diff --git a/drivers/gpu/drm/msm/adreno/a3xx_gpu.c b/drivers/gpu/drm/msm/adreno/a3xx_gpu.c
index c3b4bc6e4155..72720bb2aca1 100644
--- a/drivers/gpu/drm/msm/adreno/a3xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a3xx_gpu.c
@@ -17,10 +17,6 @@
* this program. If not, see <http://www.gnu.org/licenses/>.
*/

-#ifdef CONFIG_MSM_OCMEM
-# include <mach/ocmem.h>
-#endif
-
#include "a3xx_gpu.h"

#define A3XX_INT0_MASK \
@@ -206,9 +202,9 @@ static int a3xx_hw_init(struct msm_gpu *gpu)
gpu_write(gpu, REG_A3XX_RBBM_GPR0_CTL, 0x00000000);

/* Set the OCMEM base address for A330, etc */
- if (a3xx_gpu->ocmem_hdl) {
+ if (a3xx_gpu->ocmem.hdl) {
gpu_write(gpu, REG_A3XX_RB_GMEM_BASE_ADDR,
- (unsigned int)(a3xx_gpu->ocmem_base >> 14));
+ (unsigned int)(a3xx_gpu->ocmem.base >> 14));
}

/* Turn on performance counters: */
@@ -329,10 +325,7 @@ static void a3xx_destroy(struct msm_gpu *gpu)

adreno_gpu_cleanup(adreno_gpu);

-#ifdef CONFIG_MSM_OCMEM
- if (a3xx_gpu->ocmem_base)
- ocmem_free(OCMEM_GRAPHICS, a3xx_gpu->ocmem_hdl);
-#endif
+ adreno_gpu_ocmem_cleanup(&a3xx_gpu->ocmem);

kfree(a3xx_gpu);
}
@@ -507,17 +500,10 @@ struct msm_gpu *a3xx_gpu_init(struct drm_device *dev)

/* if needed, allocate gmem: */
if (adreno_is_a330(adreno_gpu)) {
-#ifdef CONFIG_MSM_OCMEM
- /* TODO this is different/missing upstream: */
- struct ocmem_buf *ocmem_hdl =
- ocmem_allocate(OCMEM_GRAPHICS, adreno_gpu->gmem);
-
- a3xx_gpu->ocmem_hdl = ocmem_hdl;
- a3xx_gpu->ocmem_base = ocmem_hdl->addr;
- adreno_gpu->gmem = ocmem_hdl->len;
- DBG("using %dK of OCMEM at 0x%08x", adreno_gpu->gmem / 1024,
- a3xx_gpu->ocmem_base);
-#endif
+ ret = adreno_gpu_ocmem_init(&adreno_gpu->base.pdev->dev,
+ adreno_gpu, &a3xx_gpu->ocmem);
+ if (ret)
+ goto fail;
}

if (!gpu->aspace) {
@@ -530,11 +516,14 @@ struct msm_gpu *a3xx_gpu_init(struct drm_device *dev)
*/
DRM_DEV_ERROR(dev->dev, "No memory protection without IOMMU\n");
ret = -ENXIO;
- goto fail;
+ goto fail_cleanup_ocmem;
}

return gpu;

+fail_cleanup_ocmem:
+ adreno_gpu_ocmem_cleanup(&a3xx_gpu->ocmem);
+
fail:
if (a3xx_gpu)
a3xx_destroy(&a3xx_gpu->base.base);
diff --git a/drivers/gpu/drm/msm/adreno/a3xx_gpu.h b/drivers/gpu/drm/msm/adreno/a3xx_gpu.h
index ab60dc9e344e..727c34f38f9e 100644
--- a/drivers/gpu/drm/msm/adreno/a3xx_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/a3xx_gpu.h
@@ -30,8 +30,7 @@ struct a3xx_gpu {
struct adreno_gpu base;

/* if OCMEM is used for GMEM: */
- uint32_t ocmem_base;
- void *ocmem_hdl;
+ struct adreno_ocmem ocmem;
};
#define to_a3xx_gpu(x) container_of(x, struct a3xx_gpu, base)

diff --git a/drivers/gpu/drm/msm/adreno/a4xx_gpu.c b/drivers/gpu/drm/msm/adreno/a4xx_gpu.c
index ab2b752566d8..b8f825107796 100644
--- a/drivers/gpu/drm/msm/adreno/a4xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a4xx_gpu.c
@@ -2,9 +2,6 @@
/* Copyright (c) 2014 The Linux Foundation. All rights reserved.
*/
#include "a4xx_gpu.h"
-#ifdef CONFIG_MSM_OCMEM
-# include <soc/qcom/ocmem.h>
-#endif

#define A4XX_INT0_MASK \
(A4XX_INT0_RBBM_AHB_ERROR | \
@@ -188,7 +185,7 @@ static int a4xx_hw_init(struct msm_gpu *gpu)
(1 << 30) | 0xFFFF);

gpu_write(gpu, REG_A4XX_RB_GMEM_BASE_ADDR,
- (unsigned int)(a4xx_gpu->ocmem_base >> 14));
+ (unsigned int)(a4xx_gpu->ocmem.base >> 14));

/* Turn on performance counters: */
gpu_write(gpu, REG_A4XX_RBBM_PERFCTR_CTL, 0x01);
@@ -318,10 +315,7 @@ static void a4xx_destroy(struct msm_gpu *gpu)

adreno_gpu_cleanup(adreno_gpu);

-#ifdef CONFIG_MSM_OCMEM
- if (a4xx_gpu->ocmem_base)
- ocmem_free(OCMEM_GRAPHICS, a4xx_gpu->ocmem_hdl);
-#endif
+ adreno_gpu_ocmem_cleanup(&a4xx_gpu->ocmem);

kfree(a4xx_gpu);
}
@@ -578,17 +572,10 @@ struct msm_gpu *a4xx_gpu_init(struct drm_device *dev)

/* if needed, allocate gmem: */
if (adreno_is_a4xx(adreno_gpu)) {
-#ifdef CONFIG_MSM_OCMEM
- /* TODO this is different/missing upstream: */
- struct ocmem_buf *ocmem_hdl =
- ocmem_allocate(OCMEM_GRAPHICS, adreno_gpu->gmem);
-
- a4xx_gpu->ocmem_hdl = ocmem_hdl;
- a4xx_gpu->ocmem_base = ocmem_hdl->addr;
- adreno_gpu->gmem = ocmem_hdl->len;
- DBG("using %dK of OCMEM at 0x%08x", adreno_gpu->gmem / 1024,
- a4xx_gpu->ocmem_base);
-#endif
+ ret = adreno_gpu_ocmem_init(dev->dev, adreno_gpu,
+ &a4xx_gpu->ocmem);
+ if (ret)
+ goto fail;
}

if (!gpu->aspace) {
@@ -601,11 +588,14 @@ struct msm_gpu *a4xx_gpu_init(struct drm_device *dev)
*/
DRM_DEV_ERROR(dev->dev, "No memory protection without IOMMU\n");
ret = -ENXIO;
- goto fail;
+ goto fail_cleanup_ocmem;
}

return gpu;

+fail_cleanup_ocmem:
+ adreno_gpu_ocmem_cleanup(&a4xx_gpu->ocmem);
+
fail:
if (a4xx_gpu)
a4xx_destroy(&a4xx_gpu->base.base);
diff --git a/drivers/gpu/drm/msm/adreno/a4xx_gpu.h b/drivers/gpu/drm/msm/adreno/a4xx_gpu.h
index d506311ee240..a01448cba2ea 100644
--- a/drivers/gpu/drm/msm/adreno/a4xx_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/a4xx_gpu.h
@@ -16,8 +16,7 @@ struct a4xx_gpu {
struct adreno_gpu base;

/* if OCMEM is used for GMEM: */
- uint32_t ocmem_base;
- void *ocmem_hdl;
+ struct adreno_ocmem ocmem;
};
#define to_a4xx_gpu(x) container_of(x, struct a4xx_gpu, base)

diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index 6f7f4114afcf..3a1bef87bf5b 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -25,6 +25,7 @@
#include <linux/pm_opp.h>
#include <linux/slab.h>
#include <linux/soc/qcom/mdt_loader.h>
+#include <soc/qcom/ocmem.h>
#include "adreno_gpu.h"
#include "msm_gem.h"
#include "msm_mmu.h"
@@ -897,6 +898,41 @@ static int adreno_get_pwrlevels(struct device *dev,
return 0;
}

+int adreno_gpu_ocmem_init(struct device *dev, struct adreno_gpu *adreno_gpu,
+ struct adreno_ocmem *adreno_ocmem)
+{
+ struct ocmem_buf *ocmem_hdl;
+ struct ocmem *ocmem;
+
+ ocmem = of_get_ocmem(dev);
+ if (IS_ERR(ocmem)) {
+ if (PTR_ERR(ocmem) == -ENXIO) {
+ /* This is an optional property so return success. */
+ return 0;
+ }
+
+ return PTR_ERR(ocmem);
+ }
+
+ ocmem_hdl = ocmem_allocate(ocmem, OCMEM_GRAPHICS, adreno_gpu->gmem);
+ if (IS_ERR(ocmem_hdl))
+ return PTR_ERR(ocmem_hdl);
+
+ adreno_ocmem->ocmem = ocmem;
+ adreno_ocmem->base = ocmem_hdl->addr;
+ adreno_ocmem->hdl = ocmem_hdl;
+ adreno_gpu->gmem = ocmem_hdl->len;
+
+ return 0;
+}
+
+void adreno_gpu_ocmem_cleanup(struct adreno_ocmem *adreno_ocmem)
+{
+ if (adreno_ocmem && adreno_ocmem->base)
+ ocmem_free(adreno_ocmem->ocmem, OCMEM_GRAPHICS,
+ adreno_ocmem->hdl);
+}
+
int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev,
struct adreno_gpu *adreno_gpu,
const struct adreno_gpu_funcs *funcs, int nr_rings)
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
index 0925606ec9b5..0947a6124cac 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
@@ -136,6 +136,12 @@ struct adreno_gpu {
};
#define to_adreno_gpu(x) container_of(x, struct adreno_gpu, base)

+struct adreno_ocmem {
+ struct ocmem *ocmem;
+ unsigned long base;
+ void *hdl;
+};
+
/* platform config data (ie. from DT, or pdata) */
struct adreno_platform_config {
struct adreno_rev rev;
@@ -241,6 +247,10 @@ void adreno_dump(struct msm_gpu *gpu);
void adreno_wait_ring(struct msm_ringbuffer *ring, uint32_t ndwords);
struct msm_ringbuffer *adreno_active_ring(struct msm_gpu *gpu);

+int adreno_gpu_ocmem_init(struct device *dev, struct adreno_gpu *adreno_gpu,
+ struct adreno_ocmem *ocmem);
+void adreno_gpu_ocmem_cleanup(struct adreno_ocmem *ocmem);
+
int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev,
struct adreno_gpu *gpu, const struct adreno_gpu_funcs *funcs,
int nr_rings);
--
2.20.1

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