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authorTomer Tayar <ttayar@habana.ai>2019-06-04 11:35:30 +0000
committerOded Gabbay <oded.gabbay@gmail.com>2019-06-04 15:13:09 +0300
commit1f65105ffc472624b45aff8bedb819c10a85944d (patch)
treeefd85947c007776a581cf6330e33a81d21ffc38d /drivers/misc
parente4c814aa7105a6a8320f64ecc48f13bc089eea88 (diff)
habanalabs: Read upper bits of trace buffer from RWPHI
The trace buffer address is 40 bits wide. The end of the buffer is set in the RWP register (lower 32 bits), and in the RWPHI register (upper 8 bits). Currently only the lower 32 bits are read, and this patch fixes it and concatenates the upper 8 bits to the output address. Signed-off-by: Tomer Tayar <ttayar@habana.ai> Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/habanalabs/goya/goya_coresight.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/misc/habanalabs/goya/goya_coresight.c b/drivers/misc/habanalabs/goya/goya_coresight.c
index 39f62ce72660..d7ec7ad84cc6 100644
--- a/drivers/misc/habanalabs/goya/goya_coresight.c
+++ b/drivers/misc/habanalabs/goya/goya_coresight.c
@@ -425,8 +425,18 @@ static int goya_config_etr(struct hl_device *hdev,
WREG32(base_reg + 0x28, 0);
WREG32(base_reg + 0x304, 0);
- if (params->output_size >= sizeof(u32))
- *(u32 *) params->output = RREG32(base_reg + 0x18);
+ if (params->output_size >= sizeof(u64)) {
+ u32 rwp, rwphi;
+
+ /*
+ * The trace buffer address is 40 bits wide. The end of
+ * the buffer is set in the RWP register (lower 32
+ * bits), and in the RWPHI register (upper 8 bits).
+ */
+ rwp = RREG32(base_reg + 0x18);
+ rwphi = RREG32(base_reg + 0x3c) & 0xff;
+ *(u64 *) params->output = ((u64) rwphi << 32) | rwp;
+ }
}
return 0;