diff options
Diffstat (limited to 'drivers/dma/ptdma/ptdma-debugfs.c')
-rw-r--r-- | drivers/dma/ptdma/ptdma-debugfs.c | 106 |
1 files changed, 0 insertions, 106 deletions
diff --git a/drivers/dma/ptdma/ptdma-debugfs.c b/drivers/dma/ptdma/ptdma-debugfs.c deleted file mode 100644 index c8307d3044a3..000000000000 --- a/drivers/dma/ptdma/ptdma-debugfs.c +++ /dev/null @@ -1,106 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * AMD Passthrough DMA device driver - * -- Based on the CCP driver - * - * Copyright (C) 2016,2021 Advanced Micro Devices, Inc. - * - * Author: Sanjay R Mehta <sanju.mehta@amd.com> - * Author: Gary R Hook <gary.hook@amd.com> - */ - -#include <linux/debugfs.h> -#include <linux/seq_file.h> - -#include "ptdma.h" - -/* DebugFS helpers */ -#define RI_VERSION_NUM 0x0000003F - -#define RI_NUM_VQM 0x00078000 -#define RI_NVQM_SHIFT 15 - -static int pt_debugfs_info_show(struct seq_file *s, void *p) -{ - struct pt_device *pt = s->private; - unsigned int regval; - - seq_printf(s, "Device name: %s\n", dev_name(pt->dev)); - seq_printf(s, " # Queues: %d\n", 1); - seq_printf(s, " # Cmds: %d\n", pt->cmd_count); - - regval = ioread32(pt->io_regs + CMD_PT_VERSION); - - seq_printf(s, " Version: %d\n", regval & RI_VERSION_NUM); - seq_puts(s, " Engines:"); - seq_puts(s, "\n"); - seq_printf(s, " Queues: %d\n", (regval & RI_NUM_VQM) >> RI_NVQM_SHIFT); - - return 0; -} - -/* - * Return a formatted buffer containing the current - * statistics of queue for PTDMA - */ -static int pt_debugfs_stats_show(struct seq_file *s, void *p) -{ - struct pt_device *pt = s->private; - - seq_printf(s, "Total Interrupts Handled: %ld\n", pt->total_interrupts); - - return 0; -} - -static int pt_debugfs_queue_show(struct seq_file *s, void *p) -{ - struct pt_cmd_queue *cmd_q = s->private; - unsigned int regval; - - if (!cmd_q) - return 0; - - seq_printf(s, " Pass-Thru: %ld\n", cmd_q->total_pt_ops); - - regval = ioread32(cmd_q->reg_control + 0x000C); - - seq_puts(s, " Enabled Interrupts:"); - if (regval & INT_EMPTY_QUEUE) - seq_puts(s, " EMPTY"); - if (regval & INT_QUEUE_STOPPED) - seq_puts(s, " STOPPED"); - if (regval & INT_ERROR) - seq_puts(s, " ERROR"); - if (regval & INT_COMPLETION) - seq_puts(s, " COMPLETION"); - seq_puts(s, "\n"); - - return 0; -} - -DEFINE_SHOW_ATTRIBUTE(pt_debugfs_info); -DEFINE_SHOW_ATTRIBUTE(pt_debugfs_queue); -DEFINE_SHOW_ATTRIBUTE(pt_debugfs_stats); - -void ptdma_debugfs_setup(struct pt_device *pt) -{ - struct pt_cmd_queue *cmd_q; - struct dentry *debugfs_q_instance; - - if (!debugfs_initialized()) - return; - - debugfs_create_file("info", 0400, pt->dma_dev.dbg_dev_root, pt, - &pt_debugfs_info_fops); - - debugfs_create_file("stats", 0400, pt->dma_dev.dbg_dev_root, pt, - &pt_debugfs_stats_fops); - - cmd_q = &pt->cmd_q; - - debugfs_q_instance = - debugfs_create_dir("q", pt->dma_dev.dbg_dev_root); - - debugfs_create_file("stats", 0400, debugfs_q_instance, cmd_q, - &pt_debugfs_queue_fops); -} |