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Date: Fri, 28 Sep 2018 15:31:34 +0200
From: Ard Biesheuvel <ard.biesheuvel@...aro.org>
To: Srikanth Jampala <Jampala.Srikanth@...ium.com>
Cc: Herbert Xu <herbert@...dor.apana.org.au>,
"David S. Miller" <davem@...emloft.net>,
"open list:HARDWARE RANDOM NUMBER GENERATOR CORE"
<linux-crypto@...r.kernel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
sgadam@...ium.com
Subject: Re: [PATCH cryptodev-2.6 3/3] crypto: cavium/nitrox - updated debugfs information.
On 21 September 2018 at 13:38, Srikanth Jampala
<Jampala.Srikanth@...ium.com> wrote:
> Updated debugfs to provide device partname and frequency etc.
> New file "stats" shows the number of requests posted, dropped and
> completed.
>
> Signed-off-by: Srikanth Jampala <Jampala.Srikanth@...ium.com>
> ---
> drivers/crypto/cavium/nitrox/Makefile | 1 +
> drivers/crypto/cavium/nitrox/nitrox_debugfs.c | 113 +++++++++++++++
> drivers/crypto/cavium/nitrox/nitrox_dev.h | 13 ++
> drivers/crypto/cavium/nitrox/nitrox_main.c | 129 ------------------
> 4 files changed, 127 insertions(+), 129 deletions(-)
> create mode 100644 drivers/crypto/cavium/nitrox/nitrox_debugfs.c
>
> diff --git a/drivers/crypto/cavium/nitrox/Makefile b/drivers/crypto/cavium/nitrox/Makefile
> index 6fcda6b56f7e..e12954791673 100644
> --- a/drivers/crypto/cavium/nitrox/Makefile
> +++ b/drivers/crypto/cavium/nitrox/Makefile
> @@ -9,3 +9,4 @@ n5pf-objs := nitrox_main.o \
> nitrox_algs.o
>
> n5pf-$(CONFIG_PCI_IOV) += nitrox_sriov.o
> +n5pf-$(CONFIG_DEBUG_FS) += nitrox_debugfs.o
> diff --git a/drivers/crypto/cavium/nitrox/nitrox_debugfs.c b/drivers/crypto/cavium/nitrox/nitrox_debugfs.c
> new file mode 100644
> index 000000000000..2f1e74ea846e
> --- /dev/null
> +++ b/drivers/crypto/cavium/nitrox/nitrox_debugfs.c
> @@ -0,0 +1,113 @@
> +// SPDX-License-Identifier: GPL-2.0
> +#include <linux/seq_file.h>
> +#include <linux/debugfs.h>
> +
> +#include "nitrox_csr.h"
> +#include "nitrox_dev.h"
> +
> +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 device_show(struct seq_file *s, void *v)
> +{
> + struct nitrox_device *ndev = s->private;
> +
> + seq_printf(s, "NITROX [%d]\n", ndev->idx);
> + seq_printf(s, " Part Name: %s\n", ndev->hw.partname);
> + seq_printf(s, " Frequency: %d MHz\n", ndev->hw.freq);
> + seq_printf(s, " Device ID: 0x%0x\n", ndev->hw.device_id);
> + seq_printf(s, " Revision ID: 0x%0x\n", ndev->hw.revision_id);
> + seq_printf(s, " Cores: [AE=%u SE=%u ZIP=%u]\n",
> + ndev->hw.ae_cores, ndev->hw.se_cores, ndev->hw.zip_cores);
> +
> + return 0;
> +}
> +
> +static int nitrox_open(struct inode *inode, struct file *file)
> +{
> + return single_open(file, device_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 int stats_show(struct seq_file *s, void *v)
> +{
> + struct nitrox_device *ndev = s->private;
> +
> + seq_printf(s, "NITROX [%d] Request Statistics\n", ndev->idx);
> + seq_printf(s, " Posted: %lld\n", atomic64_read(&ndev->stats.posted));
> + seq_printf(s, " Completed: %lld\n",
> + atomic64_read(&ndev->stats.completed));
> + seq_printf(s, " Dropped: %lld\n", atomic64_read(&ndev->stats.dropped));
> +
This gives me
/home/ard/linux/drivers/crypto/cavium/nitrox/nitrox_debugfs.c: In
function ‘stats_show’:
/home/ard/linux/drivers/crypto/cavium/nitrox/nitrox_debugfs.c:62:30:
warning: format ‘%lld’ expects argument of type ‘long long int’, but
argument 3 has type ‘long int’ [-Wformat=]
seq_printf(s, " Posted: %lld\n", atomic64_read(&ndev->stats.posted));
^
/home/ard/linux/drivers/crypto/cavium/nitrox/nitrox_debugfs.c:63:33:
warning: format ‘%lld’ expects argument of type ‘long long int’, but
argument 3 has type ‘long int’ [-Wformat=]
seq_printf(s, " Completed: %lld\n",
^
/home/ard/linux/drivers/crypto/cavium/nitrox/nitrox_debugfs.c:65:31:
warning: format ‘%lld’ expects argument of type ‘long long int’, but
argument 3 has type ‘long int’ [-Wformat=]
seq_printf(s, " Dropped: %lld\n", atomic64_read(&ndev->stats.dropped));
^
when building on arm64.
> + return 0;
> +}
> +
> +static int nitrox_stats_open(struct inode *inode, struct file *file)
> +{
> + return single_open(file, stats_show, inode->i_private);
> +}
> +
> +static const struct file_operations nitrox_stats_fops = {
> + .owner = THIS_MODULE,
> + .open = nitrox_stats_open,
> + .read = seq_read,
> + .llseek = seq_lseek,
> + .release = single_release,
> +};
> +
> +void nitrox_debugfs_exit(struct nitrox_device *ndev)
> +{
> + debugfs_remove_recursive(ndev->debugfs_dir);
> + ndev->debugfs_dir = NULL;
> +}
> +
> +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("firmware", 0400, dir, ndev, &firmware_fops);
> + if (!f)
> + goto err;
> + f = debugfs_create_file("device", 0400, dir, ndev, &nitrox_fops);
> + if (!f)
> + goto err;
> + f = debugfs_create_file("stats", 0400, dir, ndev, &nitrox_stats_fops);
> + if (!f)
> + goto err;
> +
> + return 0;
> +
> +err:
> + nitrox_debugfs_exit(ndev);
> + return -ENODEV;
> +}
> diff --git a/drivers/crypto/cavium/nitrox/nitrox_dev.h b/drivers/crypto/cavium/nitrox/nitrox_dev.h
> index a1442006f256..abb5c8ac54e5 100644
> --- a/drivers/crypto/cavium/nitrox/nitrox_dev.h
> +++ b/drivers/crypto/cavium/nitrox/nitrox_dev.h
> @@ -218,4 +218,17 @@ static inline bool nitrox_ready(struct nitrox_device *ndev)
> return atomic_read(&ndev->state) == __NDEV_READY;
> }
>
> +#ifdef CONFIG_DEBUG_FS
> +int nitrox_debugfs_init(struct nitrox_device *ndev);
> +void nitrox_debugfs_exit(struct nitrox_device *ndev);
> +#else
> +static inline int nitrox_debugfs_init(struct nitrox_device *ndev)
> +{
> + return 0;
> +}
> +
> +static inline void nitrox_debugfs_exit(struct nitrox_device *ndev)
> +{ }
> +#endif
> +
> #endif /* __NITROX_DEV_H */
> diff --git a/drivers/crypto/cavium/nitrox/nitrox_main.c b/drivers/crypto/cavium/nitrox/nitrox_main.c
> index 362e7217354c..5bd97cff1405 100644
> --- a/drivers/crypto/cavium/nitrox/nitrox_main.c
> +++ b/drivers/crypto/cavium/nitrox/nitrox_main.c
> @@ -323,135 +323,6 @@ 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, " Revision 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, ®ister_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
> --
> 2.17.1
>
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