diff options
Diffstat (limited to 'arch/mips/sibyte/common/sb_tbprof.c')
| -rw-r--r-- | arch/mips/sibyte/common/sb_tbprof.c | 52 |
1 files changed, 19 insertions, 33 deletions
diff --git a/arch/mips/sibyte/common/sb_tbprof.c b/arch/mips/sibyte/common/sb_tbprof.c index 9ff26b0cd3b6..149a9151bc0b 100644 --- a/arch/mips/sibyte/common/sb_tbprof.c +++ b/arch/mips/sibyte/common/sb_tbprof.c @@ -1,17 +1,5 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * * Copyright (C) 2001, 2002, 2003 Broadcom Corporation * Copyright (C) 2007 Ralf Baechle <ralf@linux-mips.org> @@ -35,7 +23,7 @@ #include <asm/io.h> #include <asm/sibyte/sb1250.h> -#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) +#ifdef CONFIG_SIBYTE_BCM1x80 #include <asm/sibyte/bcm1480_regs.h> #include <asm/sibyte/bcm1480_scd.h> #include <asm/sibyte/bcm1480_int.h> @@ -47,7 +35,7 @@ #error invalid SiByte UART configuration #endif -#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) +#ifdef CONFIG_SIBYTE_BCM1x80 #undef K_INT_TRACE_FREEZE #define K_INT_TRACE_FREEZE K_BCM1480_INT_TRACE_FREEZE #undef K_INT_PERF_CNT @@ -169,7 +157,7 @@ static void arm_tb(void) * a previous interrupt request. This means that bus profiling * requires ALL of the SCD perf counters. */ -#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) +#ifdef CONFIG_SIBYTE_BCM1x80 __raw_writeq((scdperfcnt & ~M_SPC_CFG_SRC1) | /* keep counters 0,2,3,4,5,6,7 as is */ V_SPC_CFG_SRC1(1), /* counter 1 counts cycles */ @@ -302,7 +290,7 @@ static int sbprof_zbprof_start(struct file *filp) * pass them through. I am exploiting my knowledge that * cp0_status masks out IP[5]. krw */ -#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) +#ifdef CONFIG_SIBYTE_BCM1x80 __raw_writeq(K_BCM1480_INT_MAP_I3, IOADDR(A_BCM1480_IMR_REGISTER(0, R_BCM1480_IMR_INTERRUPT_MAP_BASE_L) + ((K_BCM1480_INT_PERF_CNT & 0x3f) << 3))); @@ -355,7 +343,7 @@ static int sbprof_zbprof_start(struct file *filp) __raw_writeq(0, IOADDR(A_SCD_TRACE_SEQUENCE_7)); /* Now indicate the PERF_CNT interrupt as a trace-relevant interrupt */ -#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) +#ifdef CONFIG_SIBYTE_BCM1x80 __raw_writeq(1ULL << (K_BCM1480_INT_PERF_CNT & 0x3f), IOADDR(A_BCM1480_IMR_REGISTER(0, R_BCM1480_IMR_INTERRUPT_TRACE_L))); #else @@ -449,13 +437,13 @@ static int sbprof_tb_release(struct inode *inode, struct file *filp) return 0; } -static ssize_t sbprof_tb_read(struct file *filp, char *buf, +static ssize_t sbprof_tb_read(struct file *filp, char __user *buf, size_t size, loff_t *offp) { int cur_sample, sample_off, cur_count, sample_left; char *src; int count = 0; - char *dest = buf; + char __user *dest = buf; long cur_off = *offp; if (!access_ok(buf, size)) @@ -524,7 +512,7 @@ static long sbprof_tb_ioctl(struct file *filp, if (err) break; - err = put_user(TB_FULL, (int *) arg); + err = put_user(TB_FULL, (int __user *) arg); break; } @@ -547,13 +535,14 @@ static const struct file_operations sbprof_tb_fops = { .llseek = default_llseek, }; -static struct class *tb_class; +static const struct class tb_class = { + .name = "sb_tracebuffer", +}; static struct device *tb_dev; static int __init sbprof_tb_init(void) { struct device *dev; - struct class *tbc; int err; if (register_chrdev(SBPROF_TB_MAJOR, DEVNAME, &sbprof_tb_fops)) { @@ -562,15 +551,11 @@ static int __init sbprof_tb_init(void) return -EIO; } - tbc = class_create(THIS_MODULE, "sb_tracebuffer"); - if (IS_ERR(tbc)) { - err = PTR_ERR(tbc); + err = class_register(&tb_class); + if (err) goto out_chrdev; - } - - tb_class = tbc; - dev = device_create(tbc, NULL, MKDEV(SBPROF_TB_MAJOR, 0), NULL, "tb"); + dev = device_create(&tb_class, NULL, MKDEV(SBPROF_TB_MAJOR, 0), NULL, "tb"); if (IS_ERR(dev)) { err = PTR_ERR(dev); goto out_class; @@ -585,7 +570,7 @@ static int __init sbprof_tb_init(void) return 0; out_class: - class_destroy(tb_class); + class_unregister(&tb_class); out_chrdev: unregister_chrdev(SBPROF_TB_MAJOR, DEVNAME); @@ -594,9 +579,9 @@ out_chrdev: static void __exit sbprof_tb_cleanup(void) { - device_destroy(tb_class, MKDEV(SBPROF_TB_MAJOR, 0)); + device_destroy(&tb_class, MKDEV(SBPROF_TB_MAJOR, 0)); unregister_chrdev(SBPROF_TB_MAJOR, DEVNAME); - class_destroy(tb_class); + class_unregister(&tb_class); } module_init(sbprof_tb_init); @@ -604,4 +589,5 @@ module_exit(sbprof_tb_cleanup); MODULE_ALIAS_CHARDEV_MAJOR(SBPROF_TB_MAJOR); MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>"); +MODULE_DESCRIPTION("Support for ZBbus profiling"); MODULE_LICENSE("GPL"); |