msm: kgsl: Synchronize access to IOMMU cfg port
Add a software based spinlock between CPU and GPU.
This spinlock is used to grant mutually exclusive access to
SMMU configuration between CPU and GPU. This mutual exclusion
is required to prevent deadlock in the system.
CRs-Fixed: 409198
Change-Id: Ic375beaaf4c5505b41d3fabc4adf15965d71b13a
Signed-off-by: Tarun Karra <tkarra@codeaurora.org>
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rajeev Kulkarnie <krajeev@codeaurora.org>
diff --git a/drivers/gpu/msm/adreno.h b/drivers/gpu/msm/adreno.h
index c09a949..b227134 100644
--- a/drivers/gpu/msm/adreno.h
+++ b/drivers/gpu/msm/adreno.h
@@ -85,9 +85,11 @@
const char *pfp_fwfile;
unsigned int *pfp_fw;
size_t pfp_fw_size;
+ unsigned int pfp_fw_version;
const char *pm4_fwfile;
unsigned int *pm4_fw;
size_t pm4_fw_size;
+ unsigned int pm4_fw_version;
struct adreno_ringbuffer ringbuffer;
unsigned int mharb;
struct adreno_gpudev *gpudev;
@@ -97,6 +99,7 @@
unsigned int instruction_size;
unsigned int ib_check_level;
unsigned int fast_hang_detect;
+ unsigned int gpulist_index;
struct ocmem_buf *ocmem_hdl;
unsigned int ocmem_base;
};
@@ -359,4 +362,26 @@
return cmds - start;
}
+/*
+ * adreno_idle_cmds - Add pm4 packets for GPU idle
+ * @adreno_dev - Pointer to device structure
+ * @cmds - Pointer to memory where idle commands need to be added
+ */
+static inline int adreno_add_idle_cmds(struct adreno_device *adreno_dev,
+ unsigned int *cmds)
+{
+ unsigned int *start = cmds;
+
+ *cmds++ = cp_type3_packet(CP_WAIT_FOR_IDLE, 1);
+ *cmds++ = 0x00000000;
+
+ if ((adreno_dev->gpurev == ADRENO_REV_A305) ||
+ (adreno_dev->gpurev == ADRENO_REV_A320)) {
+ *cmds++ = cp_type3_packet(CP_WAIT_FOR_ME, 1);
+ *cmds++ = 0x00000000;
+ }
+
+ return cmds - start;
+}
+
#endif /*__ADRENO_H */