cc1aeedb98
The infrastructure includes parsing of the firmware image, initialising
FW-side structures, handling the kernel and firmware command
ringbuffers and starting & stopping the firmware processor.
This patch also adds the necessary support code for the META firmware
processor.
Changes since v8:
- Fix documentation for pvr_fwccb_process()
- Corrected license identifiers
Changes since v6:
- Add a minimum retry count to pvr_kccb_reserve_slot_sync()
Changes since v5:
- Add workaround for BRN 71242
- Attempt to recover GPU on MMU flush command failure
Changes since v4:
- Remove use of drm_gem_shmem_get_pages()
- Remove interrupt resource name
Changes since v3:
- Hard reset FW processor on watchdog timeout
- Switch to threaded IRQ
- Rework FW object creation/initialisation to aid hard reset
- Added MODULE_FIRMWARE()
- Use drm_dev_{enter,exit}
Signed-off-by: Sarah Walker <sarah.walker@imgtec.com>
Signed-off-by: Donald Robson <donald.robson@imgtec.com>
Link: https://lore.kernel.org/r/bb52a8dc84f296b37dc6668dfe8fbaf2ba551139.1700668843.git.donald.robson@imgtec.com
Signed-off-by: Maxime Ripard <mripard@kernel.org>
72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only OR MIT */
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/* Copyright (c) 2023 Imagination Technologies Ltd. */
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#ifndef PVR_CCB_H
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#define PVR_CCB_H
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#include "pvr_rogue_fwif.h"
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#include <linux/mutex.h>
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#include <linux/types.h>
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/* Forward declaration from pvr_device.h. */
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struct pvr_device;
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/* Forward declaration from pvr_gem.h. */
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struct pvr_fw_object;
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struct pvr_ccb {
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/** @ctrl_obj: FW object representing CCB control structure. */
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struct pvr_fw_object *ctrl_obj;
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/** @ccb_obj: FW object representing CCB. */
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struct pvr_fw_object *ccb_obj;
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/** @ctrl_fw_addr: FW virtual address of CCB control structure. */
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u32 ctrl_fw_addr;
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/** @ccb_fw_addr: FW virtual address of CCB. */
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u32 ccb_fw_addr;
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/** @num_cmds: Number of commands in this CCB. */
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u32 num_cmds;
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/** @cmd_size: Size of each command in this CCB, in bytes. */
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u32 cmd_size;
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/** @lock: Mutex protecting @ctrl and @ccb. */
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struct mutex lock;
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/**
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* @ctrl: Kernel mapping of CCB control structure. @lock must be held
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* when accessing.
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*/
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struct rogue_fwif_ccb_ctl *ctrl;
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/** @ccb: Kernel mapping of CCB. @lock must be held when accessing. */
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void *ccb;
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};
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int pvr_kccb_init(struct pvr_device *pvr_dev);
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void pvr_kccb_fini(struct pvr_device *pvr_dev);
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int pvr_fwccb_init(struct pvr_device *pvr_dev);
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void pvr_ccb_fini(struct pvr_ccb *ccb);
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void pvr_fwccb_process(struct pvr_device *pvr_dev);
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struct dma_fence *pvr_kccb_fence_alloc(void);
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void pvr_kccb_fence_put(struct dma_fence *fence);
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struct dma_fence *
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pvr_kccb_reserve_slot(struct pvr_device *pvr_dev, struct dma_fence *f);
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void pvr_kccb_release_slot(struct pvr_device *pvr_dev);
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int pvr_kccb_send_cmd(struct pvr_device *pvr_dev,
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struct rogue_fwif_kccb_cmd *cmd, u32 *kccb_slot);
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int pvr_kccb_send_cmd_powered(struct pvr_device *pvr_dev,
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struct rogue_fwif_kccb_cmd *cmd,
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u32 *kccb_slot);
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void pvr_kccb_send_cmd_reserved_powered(struct pvr_device *pvr_dev,
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struct rogue_fwif_kccb_cmd *cmd,
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u32 *kccb_slot);
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int pvr_kccb_wait_for_completion(struct pvr_device *pvr_dev, u32 slot_nr, u32 timeout,
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u32 *rtn_out);
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bool pvr_kccb_is_idle(struct pvr_device *pvr_dev);
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void pvr_kccb_wake_up_waiters(struct pvr_device *pvr_dev);
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#endif /* PVR_CCB_H */
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