diff options
Diffstat (limited to 'drivers/gpu/drm/imagination/pvr_fw_trace.c')
| -rw-r--r-- | drivers/gpu/drm/imagination/pvr_fw_trace.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/drivers/gpu/drm/imagination/pvr_fw_trace.c b/drivers/gpu/drm/imagination/pvr_fw_trace.c new file mode 100644 index 000000000000..0a8340369f1a --- /dev/null +++ b/drivers/gpu/drm/imagination/pvr_fw_trace.c @@ -0,0 +1,120 @@ +// SPDX-License-Identifier: GPL-2.0-only OR MIT +/* Copyright (c) 2023 Imagination Technologies Ltd. */ + +#include "pvr_device.h" +#include "pvr_gem.h" +#include "pvr_rogue_fwif.h" +#include "pvr_fw_trace.h" + +#include <drm/drm_file.h> + +#include <linux/build_bug.h> +#include <linux/dcache.h> +#include <linux/sysfs.h> +#include <linux/types.h> + +static void +tracebuf_ctrl_init(void *cpu_ptr, void *priv) +{ + struct rogue_fwif_tracebuf *tracebuf_ctrl = cpu_ptr; + struct pvr_fw_trace *fw_trace = priv; + u32 thread_nr; + + tracebuf_ctrl->tracebuf_size_in_dwords = ROGUE_FW_TRACE_BUF_DEFAULT_SIZE_IN_DWORDS; + tracebuf_ctrl->tracebuf_flags = 0; + + if (fw_trace->group_mask) + tracebuf_ctrl->log_type = fw_trace->group_mask | ROGUE_FWIF_LOG_TYPE_TRACE; + else + tracebuf_ctrl->log_type = ROGUE_FWIF_LOG_TYPE_NONE; + + for (thread_nr = 0; thread_nr < ARRAY_SIZE(fw_trace->buffers); thread_nr++) { + struct rogue_fwif_tracebuf_space *tracebuf_space = + &tracebuf_ctrl->tracebuf[thread_nr]; + struct pvr_fw_trace_buffer *trace_buffer = &fw_trace->buffers[thread_nr]; + + pvr_fw_object_get_fw_addr(trace_buffer->buf_obj, + &tracebuf_space->trace_buffer_fw_addr); + + tracebuf_space->trace_buffer = trace_buffer->buf; + tracebuf_space->trace_pointer = 0; + } +} + +int pvr_fw_trace_init(struct pvr_device *pvr_dev) +{ + struct pvr_fw_trace *fw_trace = &pvr_dev->fw_dev.fw_trace; + struct drm_device *drm_dev = from_pvr_device(pvr_dev); + u32 thread_nr; + int err; + + for (thread_nr = 0; thread_nr < ARRAY_SIZE(fw_trace->buffers); thread_nr++) { + struct pvr_fw_trace_buffer *trace_buffer = &fw_trace->buffers[thread_nr]; + + trace_buffer->buf = + pvr_fw_object_create_and_map(pvr_dev, + ROGUE_FW_TRACE_BUF_DEFAULT_SIZE_IN_DWORDS * + sizeof(*trace_buffer->buf), + PVR_BO_FW_FLAGS_DEVICE_UNCACHED | + PVR_BO_FW_NO_CLEAR_ON_RESET, + NULL, NULL, &trace_buffer->buf_obj); + if (IS_ERR(trace_buffer->buf)) { + drm_err(drm_dev, "Unable to allocate trace buffer\n"); + err = PTR_ERR(trace_buffer->buf); + trace_buffer->buf = NULL; + goto err_free_buf; + } + } + + /* TODO: Provide control of group mask. */ + fw_trace->group_mask = 0; + + fw_trace->tracebuf_ctrl = + pvr_fw_object_create_and_map(pvr_dev, + sizeof(*fw_trace->tracebuf_ctrl), + PVR_BO_FW_FLAGS_DEVICE_UNCACHED | + PVR_BO_FW_NO_CLEAR_ON_RESET, + tracebuf_ctrl_init, fw_trace, + &fw_trace->tracebuf_ctrl_obj); + if (IS_ERR(fw_trace->tracebuf_ctrl)) { + drm_err(drm_dev, "Unable to allocate trace buffer control structure\n"); + err = PTR_ERR(fw_trace->tracebuf_ctrl); + goto err_free_buf; + } + + BUILD_BUG_ON(ARRAY_SIZE(fw_trace->tracebuf_ctrl->tracebuf) != + ARRAY_SIZE(fw_trace->buffers)); + + for (thread_nr = 0; thread_nr < ARRAY_SIZE(fw_trace->buffers); thread_nr++) { + struct rogue_fwif_tracebuf_space *tracebuf_space = + &fw_trace->tracebuf_ctrl->tracebuf[thread_nr]; + struct pvr_fw_trace_buffer *trace_buffer = &fw_trace->buffers[thread_nr]; + + trace_buffer->tracebuf_space = tracebuf_space; + } + + return 0; + +err_free_buf: + for (thread_nr = 0; thread_nr < ARRAY_SIZE(fw_trace->buffers); thread_nr++) { + struct pvr_fw_trace_buffer *trace_buffer = &fw_trace->buffers[thread_nr]; + + if (trace_buffer->buf) + pvr_fw_object_unmap_and_destroy(trace_buffer->buf_obj); + } + + return err; +} + +void pvr_fw_trace_fini(struct pvr_device *pvr_dev) +{ + struct pvr_fw_trace *fw_trace = &pvr_dev->fw_dev.fw_trace; + u32 thread_nr; + + for (thread_nr = 0; thread_nr < ARRAY_SIZE(fw_trace->buffers); thread_nr++) { + struct pvr_fw_trace_buffer *trace_buffer = &fw_trace->buffers[thread_nr]; + + pvr_fw_object_unmap_and_destroy(trace_buffer->buf_obj); + } + pvr_fw_object_unmap_and_destroy(fw_trace->tracebuf_ctrl_obj); +} |