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Chris LewandGreg Kroah-Hartman
220725de5a
[ Upstream commit 2e3f0d6938 ]
Add qcom_smem_bust_hwspin_lock_by_host to enable remoteproc to bust the
hwspin_lock owned by smem. In the event the remoteproc crashes
unexpectedly, the remoteproc driver can invoke this API to try and bust
the hwspin_lock and release the lock if still held by the remoteproc
device.
Signed-off-by: Chris Lew <quic_clew@quicinc.com>
Reviewed-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Link: https://lore.kernel.org/r/20240529-hwspinlock-bust-v3-3-c8b924ffa5a2@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
20 lines
479 B
C
20 lines
479 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __QCOM_SMEM_H__
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#define __QCOM_SMEM_H__
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#define QCOM_SMEM_HOST_ANY -1
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bool qcom_smem_is_available(void);
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int qcom_smem_alloc(unsigned host, unsigned item, size_t size);
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void *qcom_smem_get(unsigned host, unsigned item, size_t *size);
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int qcom_smem_get_free_space(unsigned host);
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phys_addr_t qcom_smem_virt_to_phys(void *p);
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int qcom_smem_get_soc_id(u32 *id);
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int qcom_smem_bust_hwspin_lock_by_host(unsigned int host);
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#endif
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