From: Oded Gabbay <oded.gabbay@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: SW_Drivers@habana.ai
Subject: [PATCH 1/3] habanalabs/gaudi: remove axi drain support
Date: Wed, 16 Sep 2020 16:43:31 +0300 [thread overview]
Message-ID: <20200916134333.4029-1-oded.gabbay@gmail.com> (raw)
AXI drain is broken in GAUDI so remove support for enabling it.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
---
drivers/misc/habanalabs/gaudi/gaudi.c | 16 ----------------
1 file changed, 16 deletions(-)
diff --git a/drivers/misc/habanalabs/gaudi/gaudi.c b/drivers/misc/habanalabs/gaudi/gaudi.c
index 6f7f6ad7a358..2c10e3f92c86 100644
--- a/drivers/misc/habanalabs/gaudi/gaudi.c
+++ b/drivers/misc/habanalabs/gaudi/gaudi.c
@@ -2885,22 +2885,6 @@ static void gaudi_pre_hw_init(struct hl_device *hdev)
*/
RREG32(mmPCIE_WRAP_LBW_PROT_OVR);
- if (hdev->axi_drain) {
- WREG32(mmPCIE_WRAP_LBW_DRAIN_CFG,
- 1 << PCIE_WRAP_LBW_DRAIN_CFG_EN_SHIFT);
- WREG32(mmPCIE_WRAP_HBW_DRAIN_CFG,
- 1 << PCIE_WRAP_HBW_DRAIN_CFG_EN_SHIFT);
-
- /* Perform read to flush the DRAIN cfg */
- RREG32(mmPCIE_WRAP_HBW_DRAIN_CFG);
- } else {
- WREG32(mmPCIE_WRAP_LBW_DRAIN_CFG, 0);
- WREG32(mmPCIE_WRAP_HBW_DRAIN_CFG, 0);
-
- /* Perform read to flush the DRAIN cfg */
- RREG32(mmPCIE_WRAP_HBW_DRAIN_CFG);
- }
-
/* Configure the reset registers. Must be done as early as possible
* in case we fail during H/W initialization
*/
--
2.17.1
next reply other threads:[~2020-09-16 21:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-16 13:43 Oded Gabbay [this message]
2020-09-16 13:43 ` [PATCH 2/3] habanalabs/gaudi: fix DMA completions max outstanding to 15 Oded Gabbay
2020-09-16 13:43 ` [PATCH 3/3] habanalabs: add indication of security-enabled F/W Oded Gabbay
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