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dmaengine: ptdma: Extend ptdma-debugfs to support multi-queue 

To support multi-channel functionality with AE4DMA engine, extend the
ptdma-debugfs with reusable components.

Reviewed-by: Raju Rangoju <Raju.Rangoju@amd.com>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Link: https://lore.kernel.org/r/20241025095931.726018-6-Basavaraj.Natikar@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Basavaraj Natikar 2024-10-25 15:29:30 +05:30 committed by Vinod Koul
parent 98f5a44326
commit b10b278ea0
1 changed files with 55 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

74
drivers/dma/amd/ptdma/ptdma-debugfs.c
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@ -13,6 +13,7 @@
#include <linux/seq_file.h>
#include "ptdma.h"
#include "../ae4dma/ae4dma.h"
/* DebugFS helpers */
#define RI_VERSION_NUM 0x0000003F
@ -23,11 +24,19 @@
static int pt_debugfs_info_show(struct seq_file *s, void *p)
{
struct pt_device *pt = s->private;
struct ae4_device *ae4;
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);
if (pt->ver == AE4_DMA_VERSION) {
ae4 = container_of(pt, struct ae4_device, pt);
seq_printf(s, " # Queues: %d\n", ae4->cmd_q_count);
seq_printf(s, " # Cmds per queue: %d\n", CMD_Q_LEN);
} else {
seq_printf(s, " # Queues: %d\n", 1);
seq_printf(s, " # Cmds: %d\n", pt->cmd_count);
}
regval = ioread32(pt->io_regs + CMD_PT_VERSION);
@ -55,6 +64,7 @@ static int pt_debugfs_stats_show(struct seq_file *s, void *p)
static int pt_debugfs_queue_show(struct seq_file *s, void *p)
{
struct pt_cmd_queue *cmd_q = s->private;
struct pt_device *pt;
unsigned int regval;
if (!cmd_q)
@ -62,18 +72,24 @@ static int pt_debugfs_queue_show(struct seq_file *s, void *p)
seq_printf(s, " Pass-Thru: %ld\n", cmd_q->total_pt_ops);
regval = ioread32(cmd_q->reg_control + 0x000C);
pt = cmd_q->pt;
if (pt->ver == AE4_DMA_VERSION) {
regval = readl(cmd_q->reg_control + 0x4);
seq_printf(s, " Enabled Interrupts:: status 0x%x\n", regval);
} else {
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");
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;
}
@ -84,8 +100,12 @@ 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;
struct ae4_cmd_queue *ae4cmd_q;
struct pt_cmd_queue *cmd_q;
struct ae4_device *ae4;
char name[30];
int i;
if (!debugfs_initialized())
return;
@ -96,11 +116,27 @@ void ptdma_debugfs_setup(struct pt_device *pt)
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);
if (pt->ver == AE4_DMA_VERSION) {
ae4 = container_of(pt, struct ae4_device, pt);
for (i = 0; i < ae4->cmd_q_count; i++) {
ae4cmd_q = &ae4->ae4cmd_q[i];
cmd_q = &ae4cmd_q->cmd_q;
debugfs_create_file("stats", 0400, debugfs_q_instance, cmd_q,
&pt_debugfs_queue_fops);
memset(name, 0, sizeof(name));
snprintf(name, 29, "q%d", ae4cmd_q->id);
debugfs_q_instance =
debugfs_create_dir(name, pt->dma_dev.dbg_dev_root);
debugfs_create_file("stats", 0400, debugfs_q_instance, cmd_q,
&pt_debugfs_queue_fops);
}
} else {
debugfs_q_instance =
debugfs_create_dir("q", pt->dma_dev.dbg_dev_root);
cmd_q = &pt->cmd_q;
debugfs_create_file("stats", 0400, debugfs_q_instance, cmd_q,
&pt_debugfs_queue_fops);
}
}