drivers/gpu/host1x/hw/debug_hw_1x01.c

Source file repositories/reference/linux-study-clean/drivers/gpu/host1x/hw/debug_hw_1x01.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/host1x/hw/debug_hw_1x01.c
Extension
.c
Size
4688 bytes
Lines
150
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

if (!data_count) {
			host1x_debug_output(o, "%08x: ", val);
			data_count = show_channel_command(o, val, NULL);
		} else {
			host1x_debug_cont(o, "%08x%s", val,
					  data_count > 1 ? ", " : "])\n");
			data_count--;
		}

		if (rd_ptr == end)
			rd_ptr = start;
		else
			rd_ptr++;
	} while (rd_ptr != wr_ptr);

	if (data_count)
		host1x_debug_cont(o, ", ...])\n");
	host1x_debug_output(o, "\n");

	host1x_sync_writel(host, 0x0, HOST1X_SYNC_CFPEEK_CTRL);
}

static void host1x_debug_show_mlocks(struct host1x *host, struct output *o)
{
	unsigned int i;

	host1x_debug_output(o, "---- mlocks ----\n");

	for (i = 0; i < host1x_syncpt_nb_mlocks(host); i++) {
		u32 owner =
			host1x_sync_readl(host, HOST1X_SYNC_MLOCK_OWNER(i));
		if (HOST1X_SYNC_MLOCK_OWNER_CH_OWNS_V(owner))
			host1x_debug_output(o, "%u: locked by channel %u\n",
				i, HOST1X_SYNC_MLOCK_OWNER_CHID_V(owner));
		else if (HOST1X_SYNC_MLOCK_OWNER_CPU_OWNS_V(owner))
			host1x_debug_output(o, "%u: locked by cpu\n", i);
		else
			host1x_debug_output(o, "%u: unlocked\n", i);
	}

	host1x_debug_output(o, "\n");
}

Annotation

Implementation Notes