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Commit 086eac9e authored by Srikanth Jampala's avatar Srikanth Jampala Committed by Herbert Xu
Browse files

crypto: cavium - Add debugfs support in CNN55XX driver. 



Add debugfs support in CNN55XX Physical Function driver.
Provides hardware counters and firmware information.

Signed-off-by: default avatarSrikanth Jampala <Jampala.Srikanth@cavium.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 14fa93cd

drivers/crypto/cavium/nitrox/nitrox_csr.h

+4 −0
Original line number Diff line number Diff line
@@ -42,6 +42,8 @@ 
#define NPS_CORE_INT_ACTIVE	0x1000080

#define NPS_CORE_INT		0x10000A0

#define NPS_CORE_INT_ENA_W1S	0x10000B8

#define NPS_STATS_PKT_DMA_RD_CNT	0x1000180

#define NPS_STATS_PKT_DMA_WR_CNT	0x1000190



/* NPS packet registers */

#define NPS_PKT_INT				0x1040018
@@ -78,6 +80,7 @@ 
#define BMI_INT		0x1140000

#define BMI_CTL		0x1140020

#define BMI_INT_ENA_W1S	0x1140018

#define BMI_NPS_PKT_CNT	0x1140070



/* EFL registers */

#define EFL_CORE_INT_ENA_W1SX(_i)		(0x1240018 + ((_i) * 0x400))
@@ -91,6 +94,7 @@ 


/* BMO registers */

#define BMO_CTL2		0x1180028

#define BMO_NPS_SLC_PKT_CNT	0x1180078



/* LBC registers */

#define LBC_INT			0x1200000

drivers/crypto/cavium/nitrox/nitrox_dev.h

+4 −0
Original line number Diff line number Diff line
@@ -118,6 +118,7 @@ struct nitrox_bh { 
 * @msix: MSI-X information

 * @bh: post processing work

 * @hw: hardware information

 * @debugfs_dir: debugfs directory

 */

struct nitrox_device {

	struct list_head list;
@@ -141,6 +142,9 @@ struct nitrox_device { 
	struct nitrox_bh bh;



	struct nitrox_hw hw;

#if IS_ENABLED(CONFIG_DEBUG_FS)

	struct dentry *debugfs_dir;

#endif

};



/**

drivers/crypto/cavium/nitrox/nitrox_main.c

+135 −0
Original line number Diff line number Diff line 
#include <linux/aer.h>

#include <linux/delay.h>

#include <linux/debugfs.h>

#include <linux/firmware.h>

#include <linux/list.h>

#include <linux/module.h>
@@ -305,6 +306,135 @@ static int nitrox_pf_hw_init(struct nitrox_device *ndev) 
	return 0;

}



#if IS_ENABLED(CONFIG_DEBUG_FS)

static int registers_show(struct seq_file *s, void *v)

{

	struct nitrox_device *ndev = s->private;

	u64 offset;



	/* NPS DMA stats */

	offset = NPS_STATS_PKT_DMA_RD_CNT;

	seq_printf(s, "NPS_STATS_PKT_DMA_RD_CNT  0x%016llx\n",

		   nitrox_read_csr(ndev, offset));

	offset = NPS_STATS_PKT_DMA_WR_CNT;

	seq_printf(s, "NPS_STATS_PKT_DMA_WR_CNT  0x%016llx\n",

		   nitrox_read_csr(ndev, offset));



	/* BMI/BMO stats */

	offset = BMI_NPS_PKT_CNT;

	seq_printf(s, "BMI_NPS_PKT_CNT  0x%016llx\n",

		   nitrox_read_csr(ndev, offset));

	offset = BMO_NPS_SLC_PKT_CNT;

	seq_printf(s, "BMO_NPS_PKT_CNT  0x%016llx\n",

		   nitrox_read_csr(ndev, offset));



	return 0;

}



static int registers_open(struct inode *inode, struct file *file)

{

	return single_open(file, registers_show, inode->i_private);

}



static const struct file_operations register_fops = {

	.owner = THIS_MODULE,

	.open = registers_open,

	.read = seq_read,

	.llseek = seq_lseek,

	.release = single_release,

};



static int firmware_show(struct seq_file *s, void *v)

{

	struct nitrox_device *ndev = s->private;



	seq_printf(s, "Version: %s\n", ndev->hw.fw_name);

	return 0;

}



static int firmware_open(struct inode *inode, struct file *file)

{

	return single_open(file, firmware_show, inode->i_private);

}



static const struct file_operations firmware_fops = {

	.owner = THIS_MODULE,

	.open = firmware_open,

	.read = seq_read,

	.llseek = seq_lseek,

	.release = single_release,

};



static int nitrox_show(struct seq_file *s, void *v)

{

	struct nitrox_device *ndev = s->private;



	seq_printf(s, "NITROX-5 [idx: %d]\n", ndev->idx);

	seq_printf(s, "  Revsion ID: 0x%0x\n", ndev->hw.revision_id);

	seq_printf(s, "  Cores [AE: %u  SE: %u]\n",

		   ndev->hw.ae_cores, ndev->hw.se_cores);

	seq_printf(s, "  Number of Queues: %u\n", ndev->nr_queues);

	seq_printf(s, "  Queue length: %u\n", ndev->qlen);

	seq_printf(s, "  Node: %u\n", ndev->node);



	return 0;

}



static int nitrox_open(struct inode *inode, struct file *file)

{

	return single_open(file, nitrox_show, inode->i_private);

}



static const struct file_operations nitrox_fops = {

	.owner = THIS_MODULE,

	.open = nitrox_open,

	.read = seq_read,

	.llseek = seq_lseek,

	.release = single_release,

};



static void nitrox_debugfs_exit(struct nitrox_device *ndev)

{

	debugfs_remove_recursive(ndev->debugfs_dir);

	ndev->debugfs_dir = NULL;

}



static int nitrox_debugfs_init(struct nitrox_device *ndev)

{

	struct dentry *dir, *f;



	dir = debugfs_create_dir(KBUILD_MODNAME, NULL);

	if (!dir)

		return -ENOMEM;



	ndev->debugfs_dir = dir;

	f = debugfs_create_file("counters", 0400, dir, ndev, &register_fops);

	if (!f)

		goto err;

	f = debugfs_create_file("firmware", 0400, dir, ndev, &firmware_fops);

	if (!f)

		goto err;

	f = debugfs_create_file("nitrox", 0400, dir, ndev, &nitrox_fops);

	if (!f)

		goto err;



	return 0;



err:

	nitrox_debugfs_exit(ndev);

	return -ENODEV;

}

#else

static int nitrox_debugfs_init(struct nitrox_device *ndev)

{

	return 0;

}



static void nitrox_debugfs_exit(struct nitrox_device *ndev)

{

}

#endif



/**

 * nitrox_probe - NITROX Initialization function.

 * @pdev: PCI device information struct
@@ -389,6 +519,10 @@ static int nitrox_probe(struct pci_dev *pdev, 
	if (err)

		goto pf_hw_fail;



	err = nitrox_debugfs_init(ndev);

	if (err)

		goto pf_hw_fail;



	set_bit(NITROX_READY, &ndev->status);

	/* barrier to sync with other cpus */

	smp_mb__after_atomic();
@@ -431,6 +565,7 @@ static void nitrox_remove(struct pci_dev *pdev) 
	smp_mb__after_atomic();



	nitrox_remove_from_devlist(ndev);

	nitrox_debugfs_exit(ndev);

	nitrox_pf_sw_cleanup(ndev);



	iounmap(ndev->bar_addr);