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accel/qaic: Add MHI controller

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An AIC100 device contains a MHI interface with a number of different
channels for controlling different aspects of the device. The MHI
controller works with the MHI bus to enable and drive that interface.

AIC100 uses the BHI protocol in PBL to load SBL. The MHI controller
expects the SBL to be located at /lib/firmware/qcom/aic100/sbl.bin and
expects the MHI bus to manage the process of loading and sending SBL to
the device.

Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: Carl Vanderlip <quic_carlv@quicinc.com>
Reviewed-by: Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@quicinc.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Acked-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1679932497-30277-4-git-send-email-quic_jhugo@quicinc.com
This commit is contained in:
Jeffrey Hugo
2023-04-06 08:23:03 +02:00
committed by Jacek Lawrynowicz
parent c501ca23a6
commit a36bf7af86
2 changed files with 579 additions and 0 deletions
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drivers/accel/qaic/mhi_controller.c
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drivers/accel/qaic/mhi_controller.h
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/* SPDX-License-Identifier: GPL-2.0-only
*
* Copyright (c) 2019-2020, The Linux Foundation. All rights reserved.
* Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
*/
#ifndef MHICONTROLLERQAIC_H_
#define MHICONTROLLERQAIC_H_
struct mhi_controller *qaic_mhi_register_controller(struct pci_dev *pci_dev, void __iomem *mhi_bar,
int mhi_irq);
void qaic_mhi_free_controller(struct mhi_controller *mhi_cntrl, bool link_up);
void qaic_mhi_start_reset(struct mhi_controller *mhi_cntrl);
void qaic_mhi_reset_done(struct mhi_controller *mhi_cntrl);
#endif /* MHICONTROLLERQAIC_H_ */