Add debugfs support in CNN55XX Physical Function driver. Provides hardware counters and firmware information. Signed-off-by: Srikanth Jampala <Jampala.Srikanth@xxxxxxxxxx> --- drivers/crypto/cavium/nitrox/nitrox_csr.h | 4 + drivers/crypto/cavium/nitrox/nitrox_dev.h | 4 + drivers/crypto/cavium/nitrox/nitrox_main.c | 135 +++++++++++++++++++++++++++++ 3 files changed, 143 insertions(+) diff --git a/drivers/crypto/cavium/nitrox/nitrox_csr.h b/drivers/crypto/cavium/nitrox/nitrox_csr.h index 5834651..30b04c4 100644 --- a/drivers/crypto/cavium/nitrox/nitrox_csr.h +++ b/drivers/crypto/cavium/nitrox/nitrox_csr.h @@ -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 diff --git a/drivers/crypto/cavium/nitrox/nitrox_dev.h b/drivers/crypto/cavium/nitrox/nitrox_dev.h index 2793a10..57858b0 100644 --- a/drivers/crypto/cavium/nitrox/nitrox_dev.h +++ b/drivers/crypto/cavium/nitrox/nitrox_dev.h @@ -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 }; /** diff --git a/drivers/crypto/cavium/nitrox/nitrox_main.c b/drivers/crypto/cavium/nitrox/nitrox_main.c index aa33120..9b07003 100644 --- a/drivers/crypto/cavium/nitrox/nitrox_main.c +++ b/drivers/crypto/cavium/nitrox/nitrox_main.c @@ -1,5 +1,6 @@ #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, ®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 @@ -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); -- 2.9.3