diff options
| -rw-r--r-- | arch/mips/sibyte/Kconfig | 12 | ||||
| -rw-r--r-- | arch/mips/sibyte/sb1250/bcm1250_tbprof.c | 377 | ||||
| -rw-r--r-- | arch/mips/sibyte/sb1250/setup.c | 2 | ||||
| -rw-r--r-- | include/asm-mips/sibyte/trace_prof.h | 110 |
4 files changed, 283 insertions, 218 deletions
diff --git a/arch/mips/sibyte/Kconfig b/arch/mips/sibyte/Kconfig index 10cc4030434..bdf24a7b549 100644 --- a/arch/mips/sibyte/Kconfig +++ b/arch/mips/sibyte/Kconfig @@ -8,12 +8,14 @@ config SIBYTE_SB1250 config SIBYTE_BCM1120 bool select SIBYTE_BCM112X + select SIBYTE_HAS_ZBUS_PROFILING select SIBYTE_SB1xxx_SOC config SIBYTE_BCM1125 bool select HW_HAS_PCI select SIBYTE_BCM112X + select SIBYTE_HAS_ZBUS_PROFILING select SIBYTE_SB1xxx_SOC config SIBYTE_BCM1125H @@ -21,11 +23,13 @@ config SIBYTE_BCM1125H select HW_HAS_PCI select SIBYTE_BCM112X select SIBYTE_ENABLE_LDT_IF_PCI + select SIBYTE_HAS_ZBUS_PROFILING select SIBYTE_SB1xxx_SOC config SIBYTE_BCM112X bool select SIBYTE_SB1xxx_SOC + select SIBYTE_HAS_ZBUS_PROFILING config SIBYTE_BCM1x80 bool @@ -37,6 +41,7 @@ config SIBYTE_BCM1x55 bool select HW_HAS_PCI select SIBYTE_SB1xxx_SOC + select SIBYTE_HAS_ZBUS_PROFILING select SYS_SUPPORTS_SMP config SIBYTE_SB1xxx_SOC @@ -164,5 +169,8 @@ config SIBYTE_SB1250_PROF depends on SIBYTE_SB1xxx_SOC config SIBYTE_TBPROF - bool "Support for ZBbus profiling" - depends on SIBYTE_SB1xxx_SOC + tristate "Support for ZBbus profiling" + depends on SIBYTE_HAS_ZBUS_PROFILING + +config SIBYTE_HAS_ZBUS_PROFILING + bool diff --git a/arch/mips/sibyte/sb1250/bcm1250_tbprof.c b/arch/mips/sibyte/sb1250/bcm1250_tbprof.c index 212547c5731..ea0ca131a3c 100644 --- a/arch/mips/sibyte/sb1250/bcm1250_tbprof.c +++ b/arch/mips/sibyte/sb1250/bcm1250_tbprof.c @@ -1,6 +1,4 @@ /* - * Copyright (C) 2001, 2002, 2003 Broadcom Corporation - * * 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 @@ -14,10 +12,16 @@ * 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> + * Copyright (C) 2007 MIPS Technologies, Inc. + * written by Ralf Baechle <ralf@linux-mips.org> */ -#define SBPROF_TB_DEBUG 0 +#undef DEBUG +#include <linux/device.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/types.h> @@ -27,24 +31,98 @@ #include <linux/vmalloc.h> #include <linux/fs.h> #include <linux/errno.h> -#include <linux/reboot.h> -#include <linux/smp_lock.h> +#include <linux/types.h> #include <linux/wait.h> -#include <asm/uaccess.h> + #include <asm/io.h> #include <asm/sibyte/sb1250.h> #include <asm/sibyte/sb1250_regs.h> #include <asm/sibyte/sb1250_scd.h> #include <asm/sibyte/sb1250_int.h> -#include <asm/sibyte/trace_prof.h> +#include <asm/system.h> +#include <asm/uaccess.h> -#define DEVNAME "bcm1250_tbprof" +#define SBPROF_TB_MAJOR 240 + +typedef u64 tb_sample_t[6*256]; + +enum open_status { + SB_CLOSED, + SB_OPENING, + SB_OPEN +}; + +struct sbprof_tb { + wait_queue_head_t tb_sync; + wait_queue_head_t tb_read; + struct mutex lock; + enum open_status open; + tb_sample_t *sbprof_tbbuf; + int next_tb_sample; + + volatile int tb_enable; + volatile int tb_armed; + +}; static struct sbprof_tb sbp; +#define MAX_SAMPLE_BYTES (24*1024*1024) +#define MAX_TBSAMPLE_BYTES (12*1024*1024) + +#define MAX_SAMPLES (MAX_SAMPLE_BYTES/sizeof(u_int32_t)) +#define TB_SAMPLE_SIZE (sizeof(tb_sample_t)) +#define MAX_TB_SAMPLES (MAX_TBSAMPLE_BYTES/TB_SAMPLE_SIZE) + +/* ioctls */ +#define SBPROF_ZBSTART _IOW('s', 0, int) +#define SBPROF_ZBSTOP _IOW('s', 1, int) +#define SBPROF_ZBWAITFULL _IOW('s', 2, int) + +/* + * Routines for using 40-bit SCD cycle counter + * + * Client responsible for either handling interrupts or making sure + * the cycles counter never saturates, e.g., by doing + * zclk_timer_init(0) at least every 2^40 - 1 ZCLKs. + */ + +/* + * Configures SCD counter 0 to count ZCLKs starting from val; + * Configures SCD counters1,2,3 to count nothing. + * Must not be called while gathering ZBbus profiles. + */ + +#define zclk_timer_init(val) \ + __asm__ __volatile__ (".set push;" \ + ".set mips64;" \ + "la $8, 0xb00204c0;" /* SCD perf_cnt_cfg */ \ + "sd %0, 0x10($8);" /* write val to counter0 */ \ + "sd %1, 0($8);" /* config counter0 for zclks*/ \ + ".set pop" \ + : /* no outputs */ \ + /* enable, counter0 */ \ + : /* inputs */ "r"(val), "r" ((1ULL << 33) | 1ULL) \ + : /* modifies */ "$8" ) + + +/* Reads SCD counter 0 and puts result in value + unsigned long long val; */ +#define zclk_get(val) \ + __asm__ __volatile__ (".set push;" \ + ".set mips64;" \ + "la $8, 0xb00204c0;" /* SCD perf_cnt_cfg */ \ + "ld %0, 0x10($8);" /* write val to counter0 */ \ + ".set pop" \ + : /* outputs */ "=r"(val) \ + : /* inputs */ \ + : /* modifies */ "$8" ) + +#define DEVNAME "bcm1250_tbprof" + #define TB_FULL (sbp.next_tb_sample == MAX_TB_SAMPLES) -/************************************************************************ +/* * Support for ZBbus sampling using the trace buffer * * We use the SCD performance counter interrupt, caused by a Zclk counter @@ -54,30 +132,36 @@ static struct sbprof_tb sbp; * overflow. * * We map the interrupt for trace_buffer_freeze to handle it on CPU 0. - * - ************************************************************************/ + */ -static u_int64_t tb_period; +static u64 tb_period; static void arm_tb(void) { - u_int64_t scdperfcnt; - u_int64_t next = (1ULL << 40) - tb_period; - u_int64_t tb_options = M_SCD_TRACE_CFG_FREEZE_FULL; - /* Generate an SCD_PERFCNT interrupt in TB_PERIOD Zclks to - trigger start of trace. XXX vary sampling period */ + u64 scdperfcnt; + u64 next = (1ULL << 40) - tb_period; + u64 tb_options = M_SCD_TRACE_CFG_FREEZE_FULL; + + /* + * Generate an SCD_PERFCNT interrupt in TB_PERIOD Zclks to trigger + *start of trace. XXX vary sampling period + */ __raw_writeq(0, IOADDR(A_SCD_PERF_CNT_1)); scdperfcnt = __raw_readq(IOADDR(A_SCD_PERF_CNT_CFG)); - /* Unfortunately, in Pass 2 we must clear all counters to knock down - a previous interrupt request. This means that bus profiling - requires ALL of the SCD perf counters. */ + + /* + * Unfortunately, in Pass 2 we must clear all counters to knock down a + * previous interrupt request. This means that bus profiling requires + * ALL of the SCD perf counters. + */ __raw_writeq((scdperfcnt & ~M_SPC_CFG_SRC1) | - // keep counters 0,2,3 as is - M_SPC_CFG_ENABLE | // enable counting - M_SPC_CFG_CLEAR | // clear all counters - V_SPC_CFG_SRC1(1), // counter 1 counts cycles + /* keep counters 0,2,3 as is */ + M_SPC_CFG_ENABLE | /* enable counting */ + M_SPC_CFG_CLEAR | /* clear all counters */ + V_SPC_CFG_SRC1(1), /* counter 1 counts cycles */ IOADDR(A_SCD_PERF_CNT_CFG)); __raw_writeq(next, IOADDR(A_SCD_PERF_CNT_1)); + /* Reset the trace buffer */ __raw_writeq(M_SCD_TRACE_CFG_RESET, IOADDR(A_SCD_TRACE_CFG)); #if 0 && defined(M_SCD_TRACE_CFG_FORCECNT) @@ -91,43 +175,45 @@ static void arm_tb(void) static irqreturn_t sbprof_tb_intr(int irq, void *dev_id) { int i; - DBG(printk(DEVNAME ": tb_intr\n")); + + pr_debug(DEVNAME ": tb_intr\n"); + if (sbp.next_tb_sample < MAX_TB_SAMPLES) { /* XXX should use XKPHYS to make writes bypass L2 */ - u_int64_t *p = sbp.sbprof_tbbuf[sbp.next_tb_sample++]; + u64 *p = sbp.sbprof_tbbuf[sbp.next_tb_sample++]; /* Read out trace */ __raw_writeq(M_SCD_TRACE_CFG_START_READ, IOADDR(A_SCD_TRACE_CFG)); __asm__ __volatile__ ("sync" : : : "memory"); /* Loop runs backwards because bundles are read out in reverse order */ for (i = 256 * 6; i > 0; i -= 6) { - // Subscripts decrease to put bundle in the order - // t0 lo, t0 hi, t1 lo, t1 hi, t2 lo, t2 hi + /* Subscripts decrease to put bundle in the order */ + /* t0 lo, t0 hi, t1 lo, t1 hi, t2 lo, t2 hi */ p[i - 1] = __raw_readq(IOADDR(A_SCD_TRACE_READ)); - // read t2 hi + /* read t2 hi */ p[i - 2] = __raw_readq(IOADDR(A_SCD_TRACE_READ)); - // read t2 lo + /* read t2 lo */ p[i - 3] = __raw_readq(IOADDR(A_SCD_TRACE_READ)); - // read t1 hi + /* read t1 hi */ p[i - 4] = __raw_readq(IOADDR(A_SCD_TRACE_READ)); - // read t1 lo + /* read t1 lo */ p[i - 5] = __raw_readq(IOADDR(A_SCD_TRACE_READ)); - // read t0 hi + /* read t0 hi */ p[i - 6] = __raw_readq(IOADDR(A_SCD_TRACE_READ)); - // read t0 lo + /* read t0 lo */ } if (!sbp.tb_enable) { - DBG(printk(DEVNAME ": tb_intr shutdown\n")); + pr_debug(DEVNAME ": tb_intr shutdown\n"); __raw_writeq(M_SCD_TRACE_CFG_RESET, IOADDR(A_SCD_TRACE_CFG)); sbp.tb_armed = 0; wake_up(&sbp.tb_sync); } else { - arm_tb(); // knock down current interrupt and get another one later + arm_tb(); /* knock down current interrupt and get another one later */ } } else { /* No more trace buffer samples */ - DBG(printk(DEVNAME ": tb_intr full\n")); + pr_debug(DEVNAME ": tb_intr full\n"); __raw_writeq(M_SCD_TRACE_CFG_RESET, IOADDR(A_SCD_TRACE_CFG)); sbp.tb_armed = 0; if (!sbp.tb_enable) { @@ -135,6 +221,7 @@ static irqreturn_t sbprof_tb_intr(int irq, void *dev_id) } wake_up(&sbp.tb_read); } + return IRQ_HANDLED; } @@ -144,23 +231,30 @@ static irqreturn_t sbprof_pc_intr(int irq, void *dev_id) return IRQ_NONE; } -int sbprof_zbprof_start(struct file *filp) +/* + * Requires: Already called zclk_timer_init with a value that won't + * saturate 40 bits. No subsequent use of SCD performance counters + * or trace buffer. + */ + +static int sbprof_zbprof_start(struct file *filp) { - u_int64_t scdperfcnt; + u64 scdperfcnt; + int err; - if (sbp.tb_enable) + if (xchg(&sbp.tb_enable, 1)) return -EBUSY; - DBG(printk(DEVNAME ": starting\n")); + pr_debug(DEVNAME ": starting\n"); - sbp.tb_enable = 1; sbp.next_tb_sample = 0; filp->f_pos = 0; - if (request_irq - (K_INT_TRACE_FREEZE, sbprof_tb_intr, 0, DEVNAME " trace freeze", &sbp)) { + err = request_irq(K_INT_TRACE_FREEZE, sbprof_tb_intr, 0, + DEVNAME " trace freeze", &sbp); + if (err) return -EBUSY; - } + /* Make sure there isn't a perf-cnt interrupt waiting */ scdperfcnt = __raw_readq(IOADDR(A_SCD_PERF_CNT_CFG)); /* Disable and clear counters, override SRC_1 */ @@ -168,18 +262,21 @@ int sbprof_zbprof_start(struct file *filp) M_SPC_CFG_ENABLE | M_SPC_CFG_CLEAR | V_SPC_CFG_SRC1(1), IOADDR(A_SCD_PERF_CNT_CFG)); - /* We grab this interrupt to prevent others from trying to use - it, even though we don't want to service the interrupts - (they only feed into the trace-on-interrupt mechanism) */ - if (request_irq - (K_INT_PERF_CNT, sbprof_pc_intr, 0, DEVNAME " scd perfcnt", &sbp)) { - free_irq(K_INT_TRACE_FREEZE, &sbp); - return -EBUSY; - } - - /* I need the core to mask these, but the interrupt mapper to - pass them through. I am exploiting my knowledge that - cp0_status masks out IP[5]. krw */ + /* + * We grab this interrupt to prevent others from trying to use it, even + * though we don't want to service the interrupts (they only feed into + * the trace-on-interrupt mechanism) + */ + err = request_irq(K_INT_PERF_CNT, sbprof_pc_intr, 0, + DEVNAME " scd perfcnt", &sbp); + if (err) + goto out_free_irq; + + /* + * I need the core to mask these, but the interrupt mapper to pass them + * through. I am exploiting my knowledge that cp0_status masks out + * IP[5]. krw + */ __raw_writeq(K_INT_MAP_I3, IOADDR(A_IMR_REGISTER(0, R_IMR_INTERRUPT_MAP_BASE) + (K_INT_PERF_CNT << 3))); @@ -201,7 +298,7 @@ int sbprof_zbprof_start(struct file *filp) __raw_writeq(0, IOADDR(A_ADDR_TRAP_CFG_3)); /* Initialize Trace Event 0-7 */ - // when interrupt + /* when interrupt */ __raw_writeq(M_SCD_TREVT_INTERRUPT, IOADDR(A_SCD_TRACE_EVENT_0)); __raw_writeq(0, IOADDR(A_SCD_TRACE_EVENT_1)); __raw_writeq(0, IOADDR(A_SCD_TRACE_EVENT_2)); @@ -212,10 +309,10 @@ int sbprof_zbprof_start(struct file *filp) __raw_writeq(0, IOADDR(A_SCD_TRACE_EVENT_7)); /* Initialize Trace Sequence 0-7 */ - // Start on event 0 (interrupt) + /* Start on event 0 (interrupt) */ __raw_writeq(V_SCD_TRSEQ_FUNC_START | 0x0fff, IOADDR(A_SCD_TRACE_SEQUENCE_0)); - // dsamp when d used | asamp when a used + /* dsamp when d used | asamp when a used */ __raw_writeq(M_SCD_TRSEQ_ASAMPLE | M_SCD_TRSEQ_DSAMPLE | K_SCD_TRSEQ_TRIGGER_ALL, IOADDR(A_SCD_TRACE_SEQUENCE_1)); @@ -232,33 +329,41 @@ int sbprof_zbprof_start(struct file *filp) arm_tb(); - DBG(printk(DEVNAME ": done starting\n")); + pr_debug(DEVNAME ": done starting\n"); return 0; + +out_free_irq: + free_irq(K_INT_TRACE_FREEZE, &sbp); + + return err; } -int sbprof_zbprof_stop(void) +static int sbprof_zbprof_stop(void) { - DEFINE_WAIT(wait); - DBG(printk(DEVNAME ": stopping\n")); + int err; + + pr_debug(DEVNAME ": stopping\n"); if (sbp.tb_enable) { + /* + * XXXKW there is a window here where the intr handler may run, + * see the disable, and do the wake_up before this sleep + * happens. + */ + pr_debug(DEVNAME ": wait for disarm\n"); + err = wait_event_interruptible(sbp.tb_sync, !sbp.tb_armed); + pr_debug(DEVNAME ": disarm complete, stat %d\n", err); + + if (err) + return err; + sbp.tb_enable = 0; - /* XXXKW there is a window here where the intr handler - may run, see the disable, and do the wake_up before - this sleep happens. */ - if (sbp.tb_armed) { - DBG(printk(DEVNAME ": wait for disarm\n")); - prepare_to_wait(&sbp.tb_sync, &wait, TASK_INTERRUPTIBLE); - schedule(); - finish_wait(&sbp.tb_sync, &wait); - DBG(printk(DEVNAME ": disarm complete\n")); - } free_irq(K_INT_TRACE_FREEZE, &sbp); free_irq(K_INT_PERF_CNT, &sbp); } - DBG(printk(DEVNAME ": done stopping\n")); + pr_debug(DEVNAME ": done stopping\n"); return 0; } @@ -268,42 +373,45 @@ static int sbprof_tb_open(struct inode *inode, struct file *filp) int minor; minor = iminor(inode); - if (minor != 0) { + if (minor != 0) return -ENODEV; - } - if (sbp.open) { + + if (xchg(&sbp.open, SB_OPENING) != SB_CLOSED) return -EBUSY; - } memset(&sbp, 0, sizeof(struct sbprof_tb)); + sbp.sbprof_tbbuf = vmalloc(MAX_TBSAMPLE_BYTES); - if (!sbp.sbprof_tbbuf) { + if (!sbp.sbprof_tbbuf) return -ENOMEM; - } + memset(sbp.sbprof_tbbuf, 0, MAX_TBSAMPLE_BYTES); init_waitqueue_head(&sbp.tb_sync); init_waitqueue_head(&sbp.tb_read); - sbp.open = 1; + mutex_init(&sbp.lock); + + sbp.open = SB_OPEN; return 0; } static int sbprof_tb_release(struct inode *inode, struct file *filp) { - int minor; + int minor = iminor(inode); - minor = iminor(inode); - if (minor != 0 || !sbp.open) { + if (minor != 0 || !sbp.open) return -ENODEV; - } - if (sbp.tb_armed || sbp.tb_enable) { + mutex_lock(&sbp.lock); + + if (sbp.tb_armed || sbp.tb_enable) sbprof_zbprof_stop(); - } vfree(sbp.sbprof_tbbuf); sbp.open = 0; + mutex_unlock(&sbp.lock); + return 0; } @@ -311,21 +419,35 @@ static ssize_t sbprof_tb_read(struct file *filp, char *buf, size_t size, loff_t *offp) { int cur_sample, sample_off, cur_count, sample_left; - char *src; - int count = 0; - char *dest = buf; long cur_off = *offp; + char *dest = buf; + int count = 0; + char *src; + + if (!access_ok(VERIFY_WRITE, buf, size)) + return -EFAULT; + + mutex_lock(&sbp.lock); count = 0; cur_sample = cur_off / TB_SAMPLE_SIZE; sample_off = cur_off % TB_SAMPLE_SIZE; sample_left = TB_SAMPLE_SIZE - sample_off; + while (size && (cur_sample < sbp.next_tb_sample)) { + int err; + cur_count = size < sample_left ? size : sample_left; src = (char *)(((long)sbp.sbprof_tbbuf[cur_sample])+sample_off); - copy_to_user(dest, src, cur_count); - DBG(printk(DEVNAME ": read from sample %d, %d bytes\n", - cur_sample, cur_count)); + err = __copy_to_user(dest, src, cur_count); + if (err) { + *offp = cur_off + cur_count - err; + mutex_unlock(&sbp.lock); + return err; + } + + pr_debug(DEVNAME ": read from sample %d, %d bytes\n", + cur_sample, cur_count); size -= cur_count; sample_left -= cur_count; if (!sample_left) { @@ -339,37 +461,43 @@ static ssize_t sbprof_tb_read(struct file *filp, char *buf, dest += cur_count; count += cur_count; } + *offp = cur_off; + mutex_unlock(&sbp.lock); return count; } -static long sbprof_tb_ioctl(struct file *filp, - unsigned int command, - unsigned long arg) +static long sbprof_tb_ioctl(struct file *filp, unsigned int command, + unsigned long arg) { int error = 0; - lock_kernel(); switch (command) { case SBPROF_ZBSTART: + mutex_lock(&sbp.lock); error = sbprof_zbprof_start(filp); + mutex_unlock(&sbp.lock); break; + case SBPROF_ZBSTOP: + mutex_lock(&sbp.lock); error = sbprof_zbprof_stop(); + mutex_unlock(&sbp.lock); break; + case SBPROF_ZBWAITFULL: - DEFINE_WAIT(wait); - prepare_to_wait(&sbp.tb_read, &wait, TASK_INTERRUPTIBLE); - schedule(); - finish_wait(&sbp.tb_read, &wait); - /* XXXKW check if interrupted? */ - return put_user(TB_FULL, (int *) arg); + error = wait_event_interruptible(sbp.tb_read, TB_FULL); + if (error) + break; + + error = put_user(TB_FULL, (int *) arg); + break; + default: error = -EINVAL; break; } - unlock_kernel(); return error; } @@ -384,23 +512,60 @@ static const struct file_operations sbprof_tb_fops = { .mmap = NULL, }; +static struct class *tb_class; +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)) { printk(KERN_WARNING DEVNAME ": initialization failed (dev %d)\n", SBPROF_TB_MAJOR); return -EIO; } + + tbc = class_create(THIS_MODULE, "sb_tracebuffer"); + if (IS_ERR(tbc)) { + err = PTR_ERR(tbc); + goto out_chrdev; + } + + tb_class = tbc; + + dev = device_create(tbc, NULL, MKDEV(SBPROF_TB_MAJOR, 0), "tb"); + if (IS_ERR(dev)) { + err = PTR_ERR(dev); + goto out_class; + } + tb_dev = dev; + sbp.open = 0; tb_period = zbbus_mhz * 10000LL; - printk(KERN_INFO DEVNAME ": initialized - tb_period = %lld\n", tb_period); + pr_info(DEVNAME ": initialized - tb_period = %lld\n", tb_period); + return 0; + +out_class: + class_destroy(tb_class); +out_chrdev: + unregister_chrdev(SBPROF_TB_MAJOR, DEVNAME); + + return err; } static void __exit sbprof_tb_cleanup(void) { + device_destroy(tb_class, MKDEV(SBPROF_TB_MAJOR, 0)); unregister_chrdev(SBPROF_TB_MAJOR, DEVNAME); + class_destroy(tb_class); } module_init(sbprof_tb_init); module_exit(sbprof_tb_cleanup); + +MODULE_ALIAS_CHARDEV_MAJOR(SBPROF_TB_MAJOR); +MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>"); +MODULE_LICENSE("GPL"); diff --git a/arch/mips/sibyte/sb1250/setup.c b/arch/mips/sibyte/sb1250/setup.c index 1cb042eab72..87188f0f6fb 100644 --- a/arch/mips/sibyte/sb1250/setup.c +++ b/arch/mips/sibyte/sb1250/setup.c @@ -16,6 +16,7 @@ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include <linux/init.h> +#include <linux/module.h> #include <linux/kernel.h> #include <linux/reboot.h> #include <linux/string.h> @@ -32,6 +33,7 @@ unsigned int soc_pass; unsigned int soc_type; unsigned int periph_rev; unsigned int zbbus_mhz; +EXPORT_SYMBOL(zbbus_mhz); static char *soc_str; static char *pass_str; diff --git a/include/asm-mips/sibyte/trace_prof.h b/include/asm-mips/sibyte/trace_prof.h deleted file mode 100644 index 557792075e9..00000000000 --- a/include/asm-mips/sibyte/trace_prof.h +++ /dev/null @@ -1,110 +0,0 @@ -/* - * Copyright (C) 2001 Broadcom Corporation - * - * 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. - */ - -#ifndef __ASM_SIBYTE_TRACE_PROF_H -#define __ASM_SIBYTE_TRACE_PROF_H - -#undef DBG -#if SBPROF_TB_DEBUG -#define DBG(a) a -#else -#define DBG(a) -#endif - -#define SBPROF_TB_MAJOR 240 -#define DEVNAME "bcm1250_tbprof" - -typedef u_int64_t tb_sample_t[6*256]; - -struct sbprof_tb { - int open; - tb_sample_t *sbprof_tbbuf; - int next_tb_sample; - - volatile int tb_enable; - volatile int tb_armed; - - wait_queue_head_t tb_sync; - wait_queue_head_t tb_read; -}; - -#define MAX_SAMPLE_BYTES (24*1024*1024) -#define MAX_TBSAMPLE_BYTES (12*1024*1024) - -#define MAX_SAMPLES (MAX_SAMPLE_BYTES/sizeof(u_int32_t)) -#define TB_SAMPLE_SIZE (sizeof(tb_sample_t)) -#define MAX_TB_SAMPLES (MAX_TBSAMPLE_BYTES/TB_SAMPLE_SIZE) - -/* IOCTLs */ -#define SBPROF_ZBSTART _IOW('s', 0, int) -#define SBPROF_ZBSTOP _IOW('s', 1, int) -#define SBPROF_ZBWAITFULL _IOW('s', 2, int) - -/*************************************************************************** - * Routines for gathering ZBbus profiles using trace buffer - ***************************************************************************/ - -/* Requires: Already called zclk_timer_init with a value that won't - saturate 40 bits. No subsequent use of SCD performance counters - or trace buffer. - Effect: Starts gathering random ZBbus profiles using trace buffer. */ -extern int sbprof_zbprof_start(struct file *filp); - -/* Effect: Stops collection of ZBbus profiles */ -extern int sbprof_zbprof_stop(void); - - -/*************************************************************************** - * Routines for using 40-bit SCD cycle counter - * - * Client responsible for either handling interrupts or making sure - * the cycles counter never saturates, e.g., by doing - * zclk_timer_init(0) at least every 2^40 - 1 ZCLKs. - ***************************************************************************/ - -/* Configures SCD counter 0 to count ZCLKs starting from val; - Configures SCD counters1,2,3 to count nothing. - Must not be called while gathering ZBbus profiles. - -unsigned long long val; */ -#define zclk_timer_init(val) \ - __asm__ __volatile__ (".set push;" \ - ".set mips64;" \ - "la $8, 0xb00204c0;" /* SCD perf_cnt_cfg */ \ - "sd %0, 0x10($8);" /* write val to counter0 */ \ - "sd %1, 0($8);" /* config counter0 for zclks*/ \ - ".set pop" \ - : /* no outputs */ \ - /* enable, counter0 */ \ - : /* inputs */ "r"(val), "r" ((1ULL << 33) | 1ULL) \ - : /* modifies */ "$8" ) - - -/* Reads SCD counter 0 and puts result in value - unsigned long long val; */ -#define zclk_get(val) \ - __asm__ __volatile__ (".set push;" \ - ".set mips64;" \ - "la $8, 0xb00204c0;" /* SCD perf_cnt_cfg */ \ - "ld %0, 0x10($8);" /* write val to counter0 */ \ - ".set pop" \ - : /* outputs */ "=r"(val) \ - : /* inputs */ \ - : /* modifies */ "$8" ) - -#endif /* __ASM_SIBYTE_TRACE_PROF_H */ |